FN Thomson Reuters Web of Science™ VR 1.0 PT J AU Rahimpour, A Qi, HR Fugate, D Kuruganti, T AF Rahimpour, Alireza Qi, Hairong Fugate, David Kuruganti, Teja GP IEEE TI Non-Intrusive Load Monitoring of HVAC Components using Signal Unmixing SO 2015 IEEE GLOBAL CONFERENCE ON SIGNAL AND INFORMATION PROCESSING (GLOBALSIP) LA English DT Proceedings Paper CT IEEE Global Conference on Signal and Information Processing (GlobalSIP) CY DEC 13-16, 2015 CL Orlando, FL DE HVAC power disaggregation; Non-Intrusive Load Monitoring (NILM); Non-negative matrix factorization; Constraints AB Heating, Ventilating and Air Conditioning units (HVAC) are a major electrical energy consumer in buildings. Monitoring of the operation and energy consumption of HVAC would increase the awareness of building owners and maintenance service providers of the condition and quality of performance of these units, enabling conditioned-based maintenance which would help achieving high efficiency in energy consumption. In this paper, a novel non-intrusive method based on constrained non-negative matrix factorization is proposed for monitoring the different components of HVAC unit by only having access to the whole building aggregated power signal. At the first level of this hierarchical approach, power consumption of the building is decomposed to energy consumption of the HVAC unit and all the other electrical devices operating in the building such as lighting and plug loads. Then, the estimated power signal of the HVAC is used to estimate the power consumption profile of the HVAC major electrical loads such as compressors, condenser fans and indoor blower. Experiments conducted on real data collected from a building testbed maintained at the Oak Ridge National Laboratory (ORNL) demonstrate high accuracy on disaggregation task. C1 [Rahimpour, Alireza; Qi, Hairong] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. [Fugate, David; Kuruganti, Teja] Oak Ridge Natl Lab, Comp & Computat Sci Div, Elect & Elect Syst Res Div, Oak Ridge, TN 37831 USA. RP Rahimpour, A (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. EM arahimpo@utk.edu; hqi@utk.edu; fugatedl@ornl.gov; kurugantipv@ornl.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-7591-4 PY 2015 BP 1012 EP 1016 PG 5 WC Computer Science, Artificial Intelligence SC Computer Science GA BF2LH UT WOS:000380477600207 ER PT S AU Paone, J Bolme, D Ferrell, R Aykac, D Karnowski, T AF Paone, J. Bolme, D. Ferrell, R. Aykac, D. Karnowski, T. GP IEEE TI Baseline Face Detection, Head Pose Estimation, and Coarse Direction Detection for Facial Data in the SHRP2 Naturalistic Driving Study SO 2015 IEEE INTELLIGENT VEHICLES SYMPOSIUM (IV) SE IEEE Intelligent Vehicles Symposium LA English DT Proceedings Paper CT IEEE Intelligent Vehicles Symposium CY JUN 28-JUL 01, 2015 CL Seoul, SOUTH KOREA ID GAZE; IMAGES AB Keeping a driver focused on the road is one of the most critical steps in insuring the safe operation of a vehicle. The Strategic Highway Research Program 2 (SHRP2) has over 3,100 recorded videos of volunteer drivers during a period of 2 years. This extensive naturalistic driving study (NDS) contains over one million hours of video and associated data that could aid safety researchers in understanding where the driver's attention is focused. Manual analysis of this data is infeasible; therefore efforts are underway to develop automated feature extraction algorithms to process and characterize the data. The real-world nature, volume, and acquisition conditions are unmatched in the transportation community, but there are also challenges because the data has relatively low resolution, high compression rates, and differing illumination conditions. A smaller dataset, the head pose validation study, is available which used the same recording equipment as SHRP2 but is more easily accessible with less privacy constraints. In this work we report initial head pose accuracy using commercial and open source face pose estimation algorithms on the head pose validation data set. C1 [Paone, J.; Bolme, D.; Ferrell, R.; Aykac, D.; Karnowski, T.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Paone, J (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM karnowskitp@ornl.gov NR 28 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1931-0587 BN 978-1-4673-7266-4 J9 IEEE INT VEH SYM PY 2015 BP 174 EP 179 PG 6 WC Computer Science, Artificial Intelligence; Robotics SC Computer Science; Robotics GA BF3PP UT WOS:000380565800030 ER PT J AU Yu, YG Zou, HB Tang, W Liu, LW Teng, F AF Yu, Yongen Zou, Hongbo Tang, Wei Liu, Liwei Teng, Fei GP IEEE TI FlexTuner: A Flexible Container-based Tuning System for Cloud Applications SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLOUD ENGINEERING (IC2E 2015) LA English DT Proceedings Paper CT 2015 IEEE International Conference on Cloud Engineering CY MAR 09-12, 2015 CL Arizona State University, tempe, AZ SP IEEE Comp Soc, TCBIS, STC CLOUD COMP, IEEE CLOUD COMP, ACM, ACM SIGMOD, LG Electronics, IBM Res, Boston Univ Hariri Inst Cloud Comp Initiative, Arizona State Univ HO Arizona State University DE Big Data; Tunable; Container; Virtualization; SDN; network topology AB With the rapid growth of dataset, more and more traditional applications turn into big data applications running on cloud platforms. This trend has continued, and even accelerated. Compared with traditional applications, big data applications spend lots of time to transfer data among computing nodes. Hence, the communication optimization is a must for big data applications. Network topology and routing algorithm of the underlying system are two major factors in determining the communication performance of big data applications. Once the system is deployed, the network topology is fixed and static or dynamic routing protocols are preinstalled. Users cannot change them. Therefore, it is hard for application developers to identify the optimal network configuration for their applications with distinct communication patterns. In this study, we design a flexible container-based tuning system (FlexTuner) allowing users to create a farm of lightweight virtual machines (containers) on host machines. In addition, we use software-defined networking (SDN) technique to connect and direct the network traffic among these containers. Users can soft-tune the network topology and network traffic of the FlexTuner, thereby enabling application developers to analyze their applications on the same system with different network configuration. The preliminary experimental results have shown that FlexTuner can represent application performance variations caused by network topology and routing algorithm. Case studies through both synthetic big data programs and benchmarks have indicated that FlexTuner enables researchers to analyze the communication cost of their big data applications and to find the suitable network topology and routing algorithm. C1 [Yu, Yongen] IIT, Chicago, IL 60616 USA. [Zou, Hongbo] Queensland Univ Technol, Brisbane, Qld, Australia. [Tang, Wei] Argonne Natl Lab, Argonne, IL 60439 USA. [Liu, Liwei] Northwestern Univ, Evaston, IL USA. [Teng, Fei] Indiana Univ, Bloomington, IN USA. RP Yu, YG (reprint author), IIT, Chicago, IL 60616 USA. EM yyu22@hawk.iit.edu NR 26 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8218-9 PY 2015 BP 145 EP 154 DI 10.1109/IC2E.2015.24 PG 10 WC Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BF1ZW UT WOS:000380449000025 ER PT J AU Zounmevo, JA Perarnau, S Iskra, K Yoshii, K Gioiosa, R Van Essen, BC Gokhale, MB Leon, EA AF Zounmevo, Judicael A. Perarnau, Swann Iskra, Kamil Yoshii, Kazutomo Gioiosa, Roberto Van Essen, Brian C. Gokhale, Maya B. Leon, Edgar A. GP IEEE TI A Container-Based Approach to OS Specialization for Exascale Computing SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLOUD ENGINEERING (IC2E 2015) LA English DT Proceedings Paper CT 2015 IEEE International Conference on Cloud Engineering CY MAR 09-12, 2015 CL Arizona State University, tempe, AZ SP IEEE Comp Soc, TCBIS, STC CLOUD COMP, IEEE CLOUD COMP, ACM, ACM SIGMOD, LG Electronics, IBM Res, Boston Univ Hariri Inst Cloud Comp Initiative, Arizona State Univ HO Arizona State University DE OS Specialization; Lean; Container; Cgroups AB Future exascale systems will impose several conflicting challenges on the operating system (OS) running on the compute nodes of such machines. On the one hand, the targeted extreme scale requires the kind of high resource usage efficiency that is best provided by lightweight OSes. At the same time, substantial changes in hardware are expected for exascale systems. Compute nodes are expected to host a mix of general-purpose and special-purpose processors or accelerators tailored for serial, parallel, compute-intensive, or I/O-intensive workloads. Similarly, the deeper and more complex memory hierarchy will expose multiple coherence domains and NUMA nodes in addition to incorporating nonvolatile RAM. That expected workload and hardware heterogeneity and complexity is not compatible with the simplicity that characterizes high performance lightweight kernels. In this work, we describe the Argo Exascale node OS, which is our approach to providing in a single kernel the required OS environments for the two aforementioned conflicting goals. We resort to multiple OS specializations on top of a single Linux kernel coupled with multiple containers. C1 [Zounmevo, Judicael A.; Perarnau, Swann; Iskra, Kamil; Yoshii, Kazutomo] Argonne Natl Lab, Argonne, IL USA. [Gioiosa, Roberto] Pacific NW Natl Lab, Richland, WA 99352 USA. [Van Essen, Brian C.; Gokhale, Maya B.; Leon, Edgar A.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Zounmevo, JA (reprint author), Argonne Natl Lab, Argonne, IL USA. EM jzounmevo@@anl.gov; perarnau@mcs.anl.gov; iskra@mcs.anl.gov; kazutomo@anl.gov; Roberto.Gioiosa@pnnl.gov; vanessen1@llnl.gov; maya@llnl.gov; leon@llnl.gov NR 10 TC 1 Z9 1 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8218-9 PY 2015 BP 359 EP 364 DI 10.1109/IC2E.2015.78 PG 6 WC Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BF1ZW UT WOS:000380449000057 ER PT J AU Gerlach, W Tang, W Wilke, A Olson, D Meyer, F AF Gerlach, Wolfgang Tang, Wei Wilke, Andreas Olson, Dan Meyer, Folker GP IEEE TI Container Orchestration for Scientific Workflows SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLOUD ENGINEERING (IC2E 2015) LA English DT Proceedings Paper CT 2015 IEEE International Conference on Cloud Engineering CY MAR 09-12, 2015 CL Arizona State University, tempe, AZ SP IEEE Comp Soc, TCBIS, STC CLOUD COMP, IEEE CLOUD COMP, ACM, ACM SIGMOD, LG Electronics, IBM Res, Boston Univ Hariri Inst Cloud Comp Initiative, Arizona State Univ HO Arizona State University AB Recently, Linux container technology has been gaining attention as it promises to transform the way software is developed and deployed. The portability and ease of deployment makes Linux containers an ideal technology to be used in scientific workflow platforms. AWE/Shock is a scalable data analysis platform designed to execute data intensive scientific workflows. Recently we introduced Skyport, an extension to AWE/Shock, that uses Docker container technology to orchestrate and automate the deployment of individual workflow tasks onto the worker machines. The installation of software in independent execution environments for each task reduces complexity and offers an elegant solution to installation problems such as library version conflicts. The systematic use of isolated execution environments for workflow tasks also offers a convenient and simple mechanism to reproduce scientific results. C1 [Gerlach, Wolfgang; Olson, Dan; Meyer, Folker] Univ Chicago, Chicago, IL 60637 USA. [Gerlach, Wolfgang; Tang, Wei; Wilke, Andreas; Olson, Dan; Meyer, Folker] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Gerlach, W (reprint author), Univ Chicago, Chicago, IL 60637 USA. EM wgerlach@mcs.anl.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8218-9 PY 2015 BP 377 EP 378 DI 10.1109/IC2E.2015.87 PG 2 WC Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BF1ZW UT WOS:000380449000060 ER PT J AU Jimenez, I Maltzahn, C Moody, A Mohror, K Lofstead, J Arpaci-Dusseau, R Arpaci-Dusseau, A AF Jimenez, Ivo Maltzahn, Carlos Moody, Adam Mohror, Kathryn Lofstead, Jay Arpaci-Dusseau, Remzi Arpaci-Dusseau, Andrea GP IEEE TI The Role of Container Technology in Reproducible Computer Systems Research SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLOUD ENGINEERING (IC2E 2015) LA English DT Proceedings Paper CT 2015 IEEE International Conference on Cloud Engineering CY MAR 09-12, 2015 CL Arizona State University, tempe, AZ SP IEEE Comp Soc, TCBIS, STC CLOUD COMP, IEEE CLOUD COMP, ACM, ACM SIGMOD, LG Electronics, IBM Res, Boston Univ Hariri Inst Cloud Comp Initiative, Arizona State Univ HO Arizona State University AB Evaluating experimental results in the field of computer systems is a challenging task, mainly due to the many changes in software and hardware that computational environments go through. In this position paper, we analyze salient features of container technology that, if leveraged correctly, can help reduce the complexity of reproducing experiments in systems research. We present a use case in the area of distributed storage systems to illustrate the extensions that we envision, mainly in terms of container management infrastructure. We also discuss the benefits and limitations of using containers as a way of reproducing research in other areas of experimental systems research. C1 [Jimenez, Ivo; Maltzahn, Carlos] Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. [Moody, Adam; Mohror, Kathryn] Lawrence Livermore Natl Lab, Livermore, CA USA. [Lofstead, Jay] Sandia Natl Labs, Livermore, CA 94550 USA. [Arpaci-Dusseau, Remzi; Arpaci-Dusseau, Andrea] Univ Wisconsin, Madison, WI 53706 USA. RP Jimenez, I (reprint author), Univ Calif Santa Cruz, Santa Cruz, CA 95064 USA. EM ivo@cs.ucsc.edu; carlosm@cs.ucsc.edu; moody11@llnl.gov; kathryn@llnl.gov; gflofst@sandia.gov; remzi@cs.wisc.edu; dusseau@cs.wisc.edu NR 25 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8218-9 PY 2015 BP 379 EP 385 DI 10.1109/IC2E.2015.75 PG 7 WC Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BF1ZW UT WOS:000380449000061 ER PT J AU Fabian, N Davis, W Raybourn, EM Lakkaraju, K Whetzel, J AF Fabian, Nathan Davis, Warren Raybourn, Elaine M. Lakkaraju, Kiran Whetzel, Jon BE Cui, P Dy, J Aggarwal, C Zhou, ZH Tuzhilin, A Xiong, H Wu, X TI Grandmaster: Interactive text-based analytics of social media SO 2015 IEEE International Conference on Data Mining Workshop (ICDMW) LA English DT Proceedings Paper CT IEEE 15th International Conference on Data Mining Workshops (ICDMW) CY NOV 14-17, 2015 CL ATlantic city, NJ SP Bai du, Stony Brook Univ, Pinnacle, NSF, IEEE, Rutgers, KD nuggets, cisco, drawbridge, IEEE Comp Soc, Conf Publishing Serv AB People use social media resources like Twitter, Facebook, forums etc. to share and discuss various activities or topics. By aggregating topic trends across many individuals using these services, we seek to construct a richer profile of a person's activities and interests as well as provide a broader context of those activities. This profile may then be used in a variety of ways to understand groups as a collection of interests and affinities and an individual's participation in those groups. Our approach considers that much of these data will be unstructured, free-form text. By analyzing free-form text directly, we may be able to gain an implicit grouping of individuals with shared interests based on shared conversation, and not on explicit social software linking them. In this paper, we discuss a proof-of-concept application called Grandmaster built to pull short sections of text, a person's comments or Twitter posts, together by analysis and visualization to allow a gestalt understanding of the full collection of all individuals: how groups are similar and how they differ, based on their text inputs. C1 [Fabian, Nathan; Davis, Warren; Raybourn, Elaine M.; Lakkaraju, Kiran; Whetzel, Jon] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Fabian, N (reprint author), Sandia Natl Labs, Albuquerque, NM 87185 USA. EM ndfabia@sandia.gov; wldavis@sandia.gov; emraybo@sandia.gov; klakkar@sandia.gov; jhwhetz@sandia.gov NR 19 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8493-3 PY 2015 BP 1375 EP 1381 DI 10.1109/ICDMW.2015.187 PG 7 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF3MK UT WOS:000380556700187 ER PT J AU Kumar, J Weiner, J Hargrove, WW Norman, SP Hoffman, FM Newcomb, D AF Kumar, Jitendra Weiner, Jon Hargrove, William W. Norman, Steven P. Hoffman, Forrest M. Newcomb, Doug BE Cui, P Dy, J Aggarwal, C Zhou, ZH Tuzhilin, A Xiong, H Wu, X TI Characterization and classification of vegetation canopy structure and distribution within the Great Smoky Mountains National Park using LiDAR SO 2015 IEEE International Conference on Data Mining Workshop (ICDMW) LA English DT Proceedings Paper CT IEEE 15th International Conference on Data Mining Workshops (ICDMW) CY NOV 14-17, 2015 CL ATlantic city, NJ SP Bai du, Stony Brook Univ, Pinnacle, NSF, IEEE, Rutgers, KD nuggets, cisco, drawbridge, IEEE Comp Soc, Conf Publishing Serv ID AIRBORNE LIDAR; FORESTS; DELINEATION AB Vegetation canopy structure is a critically important habitat characteristic for many threatened and endangered birds and other animal species, and it is key information needed by forest and wildlife managers for monitoring and managing forest resources, conservation planning and fostering biodiversity. Advances in Light Detection and Ranging (LiDAR) technologies have enabled remote sensing-based studies of vegetation canopies by capturing three-dimensional structures, yielding information not available in two-dimensional images of the landscape provided by traditional multi-spectral remote sensing platforms. However, the large volume data sets produced by airborne LiDAR instruments pose a significant computational challenge, requiring algorithms to identify and analyze patterns of interest buried within LiDAR point clouds in a computationally efficient manner, utilizing state-of-art computing infrastructure. We developed and applied a computationally efficient approach to analyze a large volume of LiDAR data and characterized the vegetation canopy structures for 139,859 hectares (540 sq. miles) in the Great Smoky Mountains National Park. This study helps improve our understanding of the distribution of vegetation and animal habitats in this extremely diverse ecosystem. C1 [Kumar, Jitendra; Hoffman, Forrest M.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Weiner, Jon] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Hargrove, William W.; Norman, Steven P.] USDA Forest Serv, Southern Res Stn, Asheville, NC USA. [Newcomb, Doug] US Fish & Wildlife Serv, Raleigh, NC USA. RP Kumar, J (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM jkumar@climatemodeling.org RI Hoffman, Forrest/B-8667-2012; OI Hoffman, Forrest/0000-0001-5802-4134; Kumar, Jitendra/0000-0002-0159-0546 NR 23 TC 0 Z9 0 U1 3 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8493-3 PY 2015 BP 1478 EP 1485 DI 10.1109/ICDMW.2015.178 PG 8 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF3MK UT WOS:000380556700201 ER PT J AU Wang, RJ Wang, J Tiwari, D AF Wang, Ruijun Wang, Jun Tiwari, Devesh BE Chen, JJ Yang, LT TI Low power job scheduler for supercomputers A rule-based power-aware scheduler SO 2015 IEEE INTERNATIONAL CONFERENCE ON DATA SCIENCE AND DATA INTENSIVE SYSTEMS LA English DT Proceedings Paper CT IEEE International Conference on Data Science and Data Intensive Systems CY DEC 11-13, 2015 CL Sydney, AUSTRALIA AB Supercomputer's fast processing speed provides a great convenience to the scientists who dealing with extremely large data sets. The next generation of "exascale" supercomputers could provide accurate simulation results in the area of automobile industry, aerospace and even nuclear fusion reactors for the very first time. However, the energy cost of super-computing is "super" expensive with a total electricity bill of 9 million dollars per year. Thus, Conserving energy or increase the energy efficiency are becoming more critical. Many researchers are looking into this problem and try to conserve energy by incorporating DVFS technique into their specific methods. However, this approach is limited especially when the workload is high. In this paper, we developed a power-aware job scheduler by applying rule based control method as well as real power and speedup profiles to improve power efficiency while maintain the power constraints. The intensive simulation results shown that our proposed method is able to achieve the maximum utilization of computing resources, in the meantime, keep the energy cost under the threshold. Moreover, by introducing a Power Performance Factor (PPF) based on the real power and speedup profiles, we are able to increase the power efficiency up to 75%. C1 [Wang, Ruijun; Wang, Jun] Univ Cent Florida, Orlando, FL 32816 USA. [Tiwari, Devesh] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Wang, RJ (reprint author), Univ Cent Florida, Orlando, FL 32816 USA. EM ruijun@eecs.ucf.edu; jwang@eecs.ucf.edu NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0214-6 PY 2015 BP 732 EP 733 DI 10.1109/DSDIS.2015.66 PG 2 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BF1OB UT WOS:000380414300108 ER PT J AU Baumann, P Cooper, RJ Hochbaum, DS Patel, N Shalia, K AF Baumann, Philipp Cooper, Reynold J. Hochbaum, Dorit S. Patel, Nidhi Shalia, Kunal GP IEEE TI Efficient Deployment of Mobile Detectors for Security Applications SO 2015 IEEE INTERNATIONAL CONFERENCE ON INDUSTRIAL ENGINEERING AND ENGINEERING MANAGEMENT (IEEM) LA English DT Proceedings Paper CT IEEE International Conference on Industrial Engineering and Engineering Management IEEM CY DEC 06-09, 2015 CL Singapore, SINGAPORE SP IEEE Singapore Section, IEEE TEMS Singapore Chapter, IEEE TEMS Hong Kong Chapter DE Threat detection; mobile detector deployment problem; mixed-integer linear programming; coverage heuristic AB We present a real-world problem that arises in security threat detection applications. The problem consists of deploying mobile detectors on moving units that follow predefined routes. Examples of such units are buses, coaches, and trolleys. Due to a limited budget not all available units can be equipped with a detector. The goal is to equip a subset of units such that the utility of the resulting coverage is maximized. Existing methods for detector deployment are designed to place detectors in fixed locations and are therefore not applicable to the problem considered here. We formulate the planning problem as a binary linear program and present a coverage heuristic for generating effective deployments in short CPU time. The heuristic has theoretical performance guarantees for important special cases of the problem. The effectiveness of the coverage heuristic is demonstrated in a computational analysis based on 28 instances that we derived from real-world data. C1 [Baumann, Philipp; Hochbaum, Dorit S.; Shalia, Kunal] Univ Calif Berkeley, Dept Ind Engn & Operat Res, Berkeley, CA 94720 USA. [Cooper, Reynold J.; Patel, Nidhi] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Baumann, P (reprint author), Univ Calif Berkeley, Dept Ind Engn & Operat Res, Berkeley, CA 94720 USA. EM philipp.baumann@berkeley.edu; rjcooper@lbl.gov; dhochbaum@berkeley.edu; nrpatel@lbl.gov; kunal.shalia@berkeley.edu NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8066-9 PY 2015 BP 214 EP 218 PG 5 WC Engineering, Industrial; Engineering, Electrical & Electronic SC Engineering GA BF1SZ UT WOS:000380434300044 ER PT J AU Dowling, CP Harrison, JJ Sathanur, AV Sego, LH Corley, CD AF Dowling, Chase P. Harrison, Joshua J. Sathanur, Arun V. Sego, Landon H. Corley, Courtney D. BE Zhou, L Kaati, L Mao, WJ Wang, GA TI Social Sensor Analytics: Making Sense of Network Models in Social Media SO 2015 IEEE INTERNATIONAL CONFERENCE ON INTELLIGENCE AND SECURITY INFORMATICS (ISI) LA English DT Proceedings Paper CT IEEE International Conference on Intelligence and Security Informatics CY MAY 27-29, 2015 CL Baltimore,, MD SP IEEE Intelligent Transportation Systems Soc, Univ of Maryland, Baltimore County, College of Engn & Information Tech, Univ of Maryland, Baltimore County, Dept of Information Systems, Univ of Maryland, Baltimore County AB We carefully revisit our definition of a social media signal from previous work both in terms of time-varying features within the data and the networked nature of the medium. Further, we detail our analysis of global patterns in Twitter over the month of June 2014, detect and categorize events, and illustrate how these analyses can be used to inform graph-based models of Twitter, namely using a recent network influence model called PhySense: similar to PageRank but tuned to behavioral analysis by leveraging a sociologically inspired probabilistic model. We ultimately identify a signature of information dissemination via analysis of time series and dynamic graph spectra and corroborate these findings through manual investigation of the data as a requisite step in modeling the diffusion process with PhySense. We have made our time series and dynamic graph analytical code available via a GitHub repository 1 and our data are available upon request. C1 [Dowling, Chase P.; Harrison, Joshua J.; Sego, Landon H.; Corley, Courtney D.] Pacific Northwest Natl Lab, Richland, WA 99332 USA. [Dowling, Chase P.; Sathanur, Arun V.] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA. RP Dowling, CP (reprint author), Pacific Northwest Natl Lab, Richland, WA 99332 USA. EM court@pnnl.gov NR 24 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9889-0 PY 2015 BP 144 EP 147 PG 4 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2QL UT WOS:000380490500027 ER PT J AU Harrison, J Bell, E Corley, C Dowling, C Cowell, A AF Harrison, Joshua Bell, Eric Corley, Court Dowling, Chase Cowell, Andrew BE Zhou, L Kaati, L Mao, WJ Wang, GA TI Assessment of User Home Location Geoinference Methods SO 2015 IEEE INTERNATIONAL CONFERENCE ON INTELLIGENCE AND SECURITY INFORMATICS (ISI) LA English DT Proceedings Paper CT IEEE International Conference on Intelligence and Security Informatics CY MAY 27-29, 2015 CL Baltimore,, MD SP IEEE Intelligent Transportation Systems Soc, Univ of Maryland, Baltimore County, College of Engn & Information Tech, Univ of Maryland, Baltimore County, Dept of Information Systems, Univ of Maryland, Baltimore County DE social media; geoinference; user location; home location; clustering algorithms AB This study presents an assessment of multiple approaches to determine the home and/or other important locations to a Twitter user. In this study, we present a unique approach to the problem of geotagged data sparsity in social media when performing geoinferencing tasks. Given the sparsity of explicitly geotagged Twitter data, the ability to perform accurate and reliable user geolocation from a limited number of geotagged posts has proven to be quite useful. In our survey, we have achieved accuracy rates of over 86% in matching Twitter user profile locations with their inferred home locations derived from geotagged posts. C1 [Harrison, Joshua; Bell, Eric; Corley, Court; Dowling, Chase; Cowell, Andrew] Pacific Northwest Natl Lab, Richland, WA 99354 USA. RP Harrison, J (reprint author), Pacific Northwest Natl Lab, Richland, WA 99354 USA. EM joshua.harrison@pnnl.gov; eric.bell@pnnl.gov; court.corley@pnnl.gov; chase.dowling@pnnl.gov; andrew.cowell@pnnl.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9889-0 PY 2015 BP 148 EP 150 PG 3 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2QL UT WOS:000380490500028 ER PT S AU Hao, H Somani, A Lian, JM Carroll, TL AF Hao, He Somani, Abhishek Lian, Jianming Carroll, Thomas L. GP IEEE TI Generalized Aggregation and Coordination of Residential Loads in a Smart Community SO 2015 IEEE INTERNATIONAL CONFERENCE ON SMART GRID COMMUNICATIONS (SMARTGRIDCOMM) SE International Conference on Smart Grid Communications LA English DT Proceedings Paper CT IEEE International Conference on Smart Grid Communications (SmartGridComm) CY NOV 01-05, 2015 CL Miami, FL AB Flexibility from residential loads presents an enormous potential to provide various services to the smart grid. In this paper, we propose a unified hierarchical framework for aggregation and coordination of various residential loads in a smart community, such as Thermostatically Controlled Loads (TCLs), Distributed Energy Storages (DESs), residential Pool Pumps (PPs), and Electric Vehicles (EVs). A central idea of this framework is a virtual battery model, which provides a simple and intuitive tool to aggregate the flexibility of distributed residential loads. Moreover, a multi-stage Nash-bargaining-based coordination strategy is proposed to coordinate different aggregations of flexible loads for demand response. Case studies are provided to demonstrate the efficacy of our proposed framework and coordination strategy in managing peak power demand in a smart residential community. C1 [Hao, He; Somani, Abhishek; Lian, Jianming; Carroll, Thomas L.] Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. RP Hao, H (reprint author), Pacific NW Natl Lab, POB 999, Richland, WA 99352 USA. EM He.Hao@pnnl.gov; Ab-hishek.Somani@pnnl.gov; Jianming.Lian@pnnl.gov; Thomas.Carroll@pnnl.gov NR 18 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2373-6836 BN 978-1-4673-8289-2 J9 INT CONF SMART GRID PY 2015 BP 67 EP 72 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF1OO UT WOS:000380423300012 ER PT S AU Ma, X Dong, J Djouadi, SM Nutaro, JI Kuruganti, T AF Ma, Xiao Dong, Jin Djouadi, Seddik M. Nutaro, James I. Kuruganti, Teja GP IEEE TI Stochastic Control of Energy Efficient Buildings: A Semidefinite Programming Approach SO 2015 IEEE INTERNATIONAL CONFERENCE ON SMART GRID COMMUNICATIONS (SMARTGRIDCOMM) SE International Conference on Smart Grid Communications LA English DT Proceedings Paper CT IEEE International Conference on Smart Grid Communications (SmartGridComm) CY NOV 01-05, 2015 CL Miami, FL AB The key goal in energy efficient buildings is to reduce energy consumption of Heating, Ventilation, and Air-Conditioning (HVAC) systems while maintaining a comfortable temperature and humidity in the building. This paper proposes a novel stochastic control approach for achieving joint performance and power control of HVAC. We employ a constrained Stochastic Linear Quadratic Control (cSLQC) by minimizing a quadratic cost function with a disturbance assumed to be Gaussian. The problem is formulated to minimize the expected cost subject to a linear constraint and a probabilistic constraint. By using cSLQC, the problem is reduced to a semidefinite optimization problem, where the optimal control can be computed efficiently by Semidefinite programming (SDP). Simulation results are provided to demonstrate the effectiveness and power efficiency by utilizing the proposed control approach. C1 [Ma, Xiao] Western Digital, Irvine, CA 92612 USA. [Dong, Jin; Djouadi, Seddik M.] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. [Nutaro, James I.; Kuruganti, Teja] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Ma, X (reprint author), Western Digital, Irvine, CA 92612 USA. EM xma8623@gmail.com; jdong@utk.edu; djouadi@eecs.utk.edu; nutarojj@ornl.gov; kurugantipv@ornl.gov NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2373-6836 BN 978-1-4673-8289-2 J9 INT CONF SMART GRID PY 2015 BP 780 EP 785 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF1OO UT WOS:000380423300130 ER PT J AU Jiang, XW Luo, JW Li, SS Wang, LW AF Jiang, Xiang-Wei Luo, Jun-Wei Li, Shu-Shen Wang, Lin-Wang GP IEEE TI How Good is Mono-Layer Transition-Metal Dichalcogenide Tunnel Field-Effect Transistors in sub-10 nm?-An ab initio Simulation Study SO 2015 IEEE INTERNATIONAL ELECTRON DEVICES MEETING (IEDM) LA English DT Proceedings Paper CT IEEE International Electron Devices Meeting (IEDM) CY DEC 07-09, 2015 CL Washington, DC AB Rigorous ab initio quantum transport simulation based on flexible plane wave method has been presented to predict the performance of mono-layer transition-metal dichalcogenide (TMD) tunnel field-effect transistors (TFETs) at scaling limit. WTe2-TFET appears as the most promising candidate for both high-performance (HP) and low-operating-power (LOP) transistors with the I ON as high as 1890 mu A/mu m, which is very close to the ITRS 2024 requirements for 7nm physical gate length scaling. While other TMD-TFETs are found much less applicable. In addition, performance enhancement based on atomic defect engineering has been proposed. The simulation reveals transition metal vacancy inside the tunneling diode can dramatically increase I-ON while keeping I-OFF unchanged. As an evidence, simulation shows Mo-vacancy engineered mono-layer MoS2-TFET with 6.3nm physical gate length has 15 times larger I-ON (1324 mu A/mu m) and the same I-OFF (1.2x10(-2) mu A/mu m) compared to the pristine device. C1 [Jiang, Xiang-Wei; Luo, Jun-Wei; Li, Shu-Shen] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China. [Wang, Lin-Wang] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Jiang, XW (reprint author), Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, Beijing 100083, Peoples R China. EM xwjiang@semi.ac.cn; jwluo@semi.ac.cn; lwwang@lbl.gov NR 13 TC 0 Z9 0 U1 6 U2 6 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9894-7 PY 2015 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF2JG UT WOS:000380472500077 ER PT J AU Lu, WJ Kim, JK Klem, JF Hawkins, SD del Alamo, JA AF Lu, Wenjie Kim, Jin K. Klem, John F. Hawkins, Samuel D. del Alamo, Jesus A. GP IEEE TI An InGaSb p-channel FinFET SO 2015 IEEE INTERNATIONAL ELECTRON DEVICES MEETING (IEDM) LA English DT Proceedings Paper CT IEEE International Electron Devices Meeting (IEDM) CY DEC 07-09, 2015 CL Washington, DC ID FIELD-EFFECT TRANSISTORS; GATE-STACK; MOSFETS; PASSIVATION AB We demonstrate the first InGaSb p-channel FinFET. Towards this goal, we have developed a fin dry-etch technology which yields fins as narrow as 15 nm with vertical sidewalls, an aspect ratio greater than 10 and low sidewall interface state density. We have also realized Si-compatible ohmic contacts with ultra-low contact resistivity of 3.5.10(-8) Omega.cm(2). InGaSb FinFETs with fin widths down to 30 nm and gate lengths down to 100 nm have been fabricated. The Al2O3 gate oxide has an EOT of 1.8 nm. A high g(m) of 122 mu S/mu m is obtained in devices of W-f = 100 nm and L-g = 100 nm. In the smallest devices with W-f = 30 nm and L-g = 100 nm, a g(m) of 78 mu S/mu m is achieved. C1 [Lu, Wenjie; del Alamo, Jesus A.] MIT, Microsyst Technol Labs, 60 Vassar St,Rm 39-567A, Cambridge, MA 02139 USA. [Kim, Jin K.; Klem, John F.; Hawkins, Samuel D.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Lu, WJ (reprint author), MIT, Microsyst Technol Labs, 60 Vassar St,Rm 39-567A, Cambridge, MA 02139 USA. EM wenjie@mit.edu NR 15 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9894-7 PY 2015 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF2JG UT WOS:000380472500204 ER PT J AU Lim, SH Lee, S Ganesh, G Brown, TC Sukumar, SR AF Lim, Seung-Hwan Lee, Sangkeun Ganesh, Gautam Brown, Tyler C. Sukumar, Sreenivas R. GP IEEE TI Graph Processing Platforms at Scale: Practices and Experiences SO 2015 IEEE International Symposium on Performance Analysis and Software (ISPASS) SE IEEE International Symposium on Performance Analysis of Systems and Software-ISPASS LA English DT Proceedings Paper CT IEEE INTERNATIONAL SYMPOSIUM ON PERFORMANCE ANALYSIS OF SYSTEMS AND SOFTWARE (ISPASS) CY MAR 29-31, 2015 CL Philidelphia, PA SP IEEE Comp Soc AB Graph analysis has revealed patterns and relationships hidden in data from a variety of domains such as transportation networks, social networks, clinical pathways, and collaboration networks. As these networks grow in size, variety and complexity, it is a challenge to find the right combination of tools and implementation of algorithms to discover new insights from the data. Addressing this challenge, our study presents an extensive empirical evaluation of three representative graph processing platforms: Pegasus, GraphX, and Urika. Each system represents a combination of options in data model, processing paradigm, and infrastructure. We benchmark each platform using three popular graph mining operations, degree distribution, connected components, and PageRank over real-world graphs. Our experiments show that each graph processing platform owns a particular strength for different types of graph operations. While Urika performs the best in non-iterative graph operations like degree distribution, GraphX outperforms iterative operations like connected components and PageRank. We conclude this paper by discussing options to optimize the performance of a graph-theoretic operation on each platform for large-scale real world graphs. C1 [Lim, Seung-Hwan; Lee, Sangkeun; Ganesh, Gautam; Brown, Tyler C.; Sukumar, Sreenivas R.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. RP Lim, SH (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. EM lims1@ornl.gov; lees4@ornl.gov; browntc@ornl.gov; ganeshg@ornl.gov; sukumarsr@ornl.gov NR 46 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-1957-4 J9 INT SYM PERFORM ANAL PY 2015 BP 42 EP 51 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BF3LM UT WOS:000380554200005 ER PT J AU Awad, A Kettering, B Solihin, Y AF Awad, Amro Kettering, Brett Solihin, Yan GP IEEE TI Non-Volatile Memory Host Controller Interface Performance Analysis in High-Performance I/O Systems SO 2015 IEEE INTERNATIONAL SYMPOSIUM ON PERFORMANCE ANALYSIS AND SOFTWARE (ISPASS) SE IEEE International Symposium on Performance Analysis of Systems and Software-ISPASS LA English DT Proceedings Paper CT IEEE International Symposium on Performance Analysis of Systems and Software (ISPASS) CY MAR 29-31, 2015 CL Philadelphia, PA SP IEEE Comp Soc AB Emerging non-volatile memories (NVMs), such as Phase-Change Memory (PCM), Spin-Transfer Torque RAM (STT-RAM) and Memristor, are very promising candidates for replacing NAND-Flash Solid-State Drives (SSDs) and Hard Disk Drives (HDDs) for many reasons. First, their read/write latencies are orders of magnitude faster. Second, some emerging NVMs, such as memristors, are expected to have very high densities, which allow deploying a much higher capacity without requiring increased physical space. While the percentage of the time taken for data movement over low-speed buses, such as Peripheral Component Interconnect (PCI), is negligible for the overall read/write latency in HDDs, it could be dominant for emerging fast NVMs. Therefore, the trend has moved toward using very fast interconnect technologies, such as PCI Express (PCIe) which is hundreds of times faster than the traditional PCI. Accordingly, new host controller interfaces are used to communicate with I/O devices to exploit the parallelism and low-latency features of emerging NVMs through high-speed interconnects. In this paper, we investigate the system performance bottlenecks and overhead of using the standard state-of-the-art Non-Volatile Memory Express (NVMe), or Non-Volatile Memory Host Controller Interface (NVMHCI) Specification [1] as representative for NVM host controller interfaces. C1 [Awad, Amro; Solihin, Yan] North Carolina State Univ, Raleigh, NC 27695 USA. [Kettering, Brett] Los Alamos Natl Lab, Los Alamos, NM USA. RP Awad, A (reprint author), North Carolina State Univ, Raleigh, NC 27695 USA. EM ajawad@ncsu.edu; brettk@lanl.gov; solihin@ncsu.edu NR 13 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-1957-4 J9 INT SYM PERFORM ANAL PY 2015 BP 145 EP 154 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BF3LM UT WOS:000380554200015 ER PT J AU Kestor, G Gioiosa, R Chavarria-Miranda, D AF Kestor, Gokcen Gioiosa, Roberto Chavarria-Miranda, Daniel GP IEEE TI Prometheus: Scalable and Accurate Emulation of Task-Based Applications on Many-Core Systems SO 2015 IEEE International Symposium on Performance Analysis and Software (ISPASS) SE IEEE International Symposium on Performance Analysis of Systems and Software-ISPASS LA English DT Proceedings Paper CT IEEE INTERNATIONAL SYMPOSIUM ON PERFORMANCE ANALYSIS OF SYSTEMS AND SOFTWARE (ISPASS) CY MAR 29-31, 2015 CL Philidelphia, PA SP IEEE Comp Soc ID SIMULATION; PERFORMANCE AB Modeling the performance of non-deterministic parallel applications on future many-core systems requires the development of novel simulation and emulation techniques and tools. We present "Prometheus", a fast, accurate and modular emulation framework for task-based applications. By raising the level of abstraction and focusing on runtime synchronization, Prometheus can accurately predict applications' performance on very large many-core systems. We validate our emulation framework against two real platforms ( AMD Interlagos and Intel MIC) and report error rates generally below 4%. We, then, evaluate Prometheus' performance and scalability: our results show that Prometheus can emulate a task-based application on a system with 512K cores in 11.5 hours. We present two test cases that show how Prometheus can be used to study the performance and behavior of systems that present some of the characteristics expected from exascale supercomputer nodes, such as active power management and processors with a high number of cores but reduced cache per core. C1 [Kestor, Gokcen; Gioiosa, Roberto; Chavarria-Miranda, Daniel] Pacific Northwest Natl Lab, High Performance Comp, Richland, WA 99354 USA. RP Kestor, G (reprint author), Pacific Northwest Natl Lab, High Performance Comp, Richland, WA 99354 USA. EM gokcen.kestor@pnnl.gov; roberto.gioiosa@pnnl.gov; daniel.chavarria@pnnl.gov NR 34 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-1957-4 J9 INT SYM PERFORM ANAL PY 2015 BP 308 EP 317 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BF3LM UT WOS:000380554200038 ER PT J AU Li, DT Myneni, G Dong, CK AF Li, Detian Myneni, Ganapati Dong, Changkun GP IEEE TI Characteristic performances of carbon nanotube field emission cathode SO 2015 IEEE INTERNATIONAL VACUUM ELECTRONICS CONFERENCE (IVEC) SE IEEE International Vacuum Electronics Conference IVEC LA English DT Proceedings Paper CT IEEE International Vacuum Electronics Conference (IVEC) CY APR 27-29, 2015 CL Beijing, PEOPLES R CHINA SP BVERI, UESTC, HeFei LeiKe Elect Co LTD, Southeast Univ, Key Lab High Power Microwave Sources Technol,CAS, Anhui Huadong Photoelect Technol Inst, GUOGUANG Elect co Ltd Chengdu, Nanling SanLe Elect Informat Ind Grp Co Ltd DE field emission; carbon nanotube; electron source AB The field emission behaviors of multi-walled carbon nanotubes (CNTs) electron source are investigated. The CNT emitters were grown directly on the Ni alloy substrate by the chemical vaopor deposition. Anode current 41 mu A under 310 V gate voltage with the electron transmission rate of about 70-75%, only about 10% lower than the gate transparency. The electric field generated from the anode could penetrate through the gate grid to enhances the field emission by 30-50 %. There could be a serious pressure rise in the operation due to mainly the molecule desorption from the metal electrodes (gate and anode) by the electron bombardment. C1 [Li, Detian; Dong, Changkun] Wenzhou Univ, Inst Micronano Struct & Optoelect, Wenzhou, Peoples R China. [Li, Detian; Dong, Changkun] Lanzhou Inst Phys, Sci & Technol Vacuum & Cryogen Technol & Phys Lab, Lanzhou, Peoples R China. [Myneni, Ganapati] Jefferson Lab, Newport News, VA 23606 USA. RP Li, DT (reprint author), Wenzhou Univ, Inst Micronano Struct & Optoelect, Wenzhou, Peoples R China. EM dck@wzu.edu.cn NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-7110-7 J9 IEEE INT VAC ELECT C PY 2015 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA BF2LW UT WOS:000380479000306 ER PT S AU Tong, X Chen, CM Shen, HW Wong, PC AF Tong, Xin Chen, Chun-Ming Shen, Han-Wei Wong, Pak Chung BE Liu, SX Scheuermann, G Takahashi, S TI Interactive Streamline Exploration and Manipulation Using Deformation SO 2015 IEEE Pacific Visualization Symposium (PacificVis) SE IEEE Pacific Visualization Symposium LA English DT Proceedings Paper CT IEEE Pacific Visualization Symposium (PacificVis) CY APR 14-17, 2015 CL Hangzhou, PEOPLES R CHINA SP IEEE, IEEE Computer Society, IEEE VGTC, CAD&CG, ZHEJIANG UNIVERSITY OF TECHNOLOGY, HYDATA ID FLOW VISUALIZATION; FRAMEWORK AB Occlusion presents a major challenge in visualizing 3D flow fields using streamlines. Displaying too many streamlines creates a dense visualization filled with occluded structures, but displaying too few streams risks losing important features. A more ideal streamline exploration approach is to visually manipulate the cluttered streamlines by pulling visible layers apart and revealing the hidden structures underneath. This paper presents a customized deformation algorithm and an interactive visualization tool to minimize visual cluttering. The algorithm is able to maintain the overall integrity of the flow field and expose the previously hidden structures. Our system supports both mouse and direct-touch interactions to manipulate the viewing perspectives and visualize the streamlines in depth. By using a lens metaphor of different shapes to select the transition zone of the targeted area interactively, the users can move their focus and examine the flow field freely. C1 [Tong, Xin; Chen, Chun-Ming; Shen, Han-Wei] Ohio State Univ, Columbus, OH 43210 USA. [Wong, Pak Chung] Pacific Northwest Natl Lab, Richland, WA 99352 USA. RP Tong, X (reprint author), Ohio State Univ, Columbus, OH 43210 USA. EM tong@cse.ohio-state.edu; chenchu@cse.ohio-state.edu; hwshen@cse.ohio-state.edu; pak.wong@pnnl.gov NR 30 TC 2 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2165-8765 BN 978-1-4673-6879-7 J9 IEEE PAC VIS SYMP PY 2015 BP 1 EP 8 PG 8 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF3GZ UT WOS:000380542200001 ER PT S AU Larsen, M Meredith, JS Navratil, PA Childs, H AF Larsen, Matthew Meredith, Jeremy S. Navratil, Paul A. Childs, Hank BE Liu, SX Scheuermann, G Takahashi, S TI Ray Tracing Within a Data Parallel Framework SO 2015 IEEE Pacific Visualization Symposium (PacificVis) SE IEEE Pacific Visualization Symposium LA English DT Proceedings Paper CT IEEE Pacific Visualization Symposium (PacificVis) CY APR 14-17, 2015 CL Hangzhou, PEOPLES R CHINA SP IEEE, IEEE Computer Society, IEEE VGTC, CAD&CG, ZHEJIANG UNIVERSITY OF TECHNOLOGY, HYDATA AB Current architectural trends on supercomputers have dramatic increases in the number of cores and available computational power per die, but this power is increasingly difficult for programmers to harness effectively. High-level language constructs can simplify programming many-core devices, but this ease comes with a potential loss of processing power, particularly for cross-platform constructs. Recently, scientific visualization packages have embraced language constructs centering around data parallelism, with familiar operators such as map, reduce, gather, and scatter. Complete adoption of data parallelism will require that central visualization algorithms be revisited, and expressed in this new paradigm while preserving both functionality and performance. This investment has a large potential payoff: portable performance in software bases that can span over the many architectures that scientific visualization applications run on. With this work, we present a method for ray tracing consisting of entirely of data parallel primitives. Given the extreme computational power on nodes now prevalent on supercomputers, we believe that ray tracing can supplant rasterization as the work-horse graphics solution for scientific visualization. Our ray tracing method is relatively efficient, and we describe its performance with a series of tests, and also compare to leading-edge ray tracers that are optimized for specific platforms. We find that our data parallel approach leads to results that are acceptable for many scientific visualization use cases, with the key benefit of providing a single code base that can run on many architectures. C1 [Larsen, Matthew; Childs, Hank] Univ Oregon, Eugene, OR 97403 USA. [Meredith, Jeremy S.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Navratil, Paul A.] Univ Texas Austin, Texas Adv Comp Ctr, Austin, TX 78712 USA. [Childs, Hank] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Larsen, M (reprint author), Univ Oregon, Eugene, OR 97403 USA. EM mlarsen@cs.uoregon.edu NR 38 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2165-8765 BN 978-1-4673-6879-7 J9 IEEE PAC VIS SYMP PY 2015 BP 279 EP 286 PG 8 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF3GZ UT WOS:000380542200040 ER PT J AU Hoke, A Chakraborty, S Basso, T AF Hoke, Anderson Chakraborty, Sudipta Basso, Thomas GP IEEE TI A Power Hardware-in-the-loop Framework for Advanced Grid-interactive Inverter Testing SO 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) LA English DT Proceedings Paper CT 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) CY FEB 18-20, 2015 CL Washington, DC DE Inverters; power hardware-in-the-loop; power system modeling; testing; voltage control; frequency control AB This paper presents a power hardware-in-the-loop (PHIL) framework for testing advanced inverter features such as voltage regulation and frequency response that interact dynamically with the electric grid. The PHIL model simulates grid voltage dynamics using a simplified Thevenin-based model and simulates grid frequency dynamics using a turbine-governor model including droop, inertia, and damping. Also presented are a statistical analysis of short-circuit impedances in the IEEE 8500-node test feeder, and analytical justification for approximating Thevenin impedances at inverter connection points as short-circuit impedances. Test results are presented for two inverters performing volt-VAr control, high-frequency power curtailment, voltage and frequency ride-through, and abnormal voltage disconnection while connected to the PHIL system. Results confirm advanced grid support functions have the desired effects when performing voltage regulation and high-frequency power curtailment while riding through large voltage and frequency transients. Some PHIL tests presented here replicate IEEE 1547.1-style conformance tests; no evidence is seen that grid dynamic response emulation affects the results of such conformance tests. C1 [Hoke, Anderson; Chakraborty, Sudipta; Basso, Thomas] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Hoke, A (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM andy.hoke@nrel.gov NR 14 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-1785-3 PY 2015 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF3FK UT WOS:000380535300157 ER PT J AU Hoke, A Chakraborty, S Basso, T AF Hoke, Anderson Chakraborty, Sudipta Basso, Thomas GP IEEE TI A Power Hardware-in-the-loop Framework for Advanced Grid-interactive Inverter Testing SO 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) LA English DT Proceedings Paper CT 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) CY FEB 18-20, 2015 CL Washington, DC DE Inverters; power hardware-in-the-loop; power system modeling; testing; voltage control; frequency control AB This paper presents a power hardware-in-the-loop (PHIL) framework for testing advanced inverter features such as voltage regulation and frequency response that interact dynamically with the electric grid. The PHIL model simulates grid voltage dynamics using a simplified Thevenin-based model and simulates grid frequency dynamics using a turbine-governor model including droop, inertia, and damping. Also presented are a statistical analysis of short-circuit impedances in the IEEE 8500-node test feeder, and analytical justification for approximating Thevenin impedances at inverter connection points as short-circuit impedances. Test results are presented for two inverters performing volt-VAr control, high-frequency power curtailment, voltage and frequency ride-through, and abnormal voltage disconnection while connected to the PHIL system. Results confirm advanced grid support functions have the desired effects when performing voltage regulation and high-frequency power curtailment while riding through large voltage and frequency transients. Some PHIL tests presented here replicate IEEE 1547.1-style conformance tests; no evidence is seen that grid dynamic response emulation affects the results of such conformance tests. C1 [Hoke, Anderson; Chakraborty, Sudipta; Basso, Thomas] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Hoke, A (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM andy.hoke@nrel.gov NR 14 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-1785-3 PY 2015 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF3FK UT WOS:000380535300039 ER PT J AU Johnson, BJ Starke, MR Abdelaziz, OA Jackson, RK Tolbert, LM AF Johnson, Brandon J. Starke, Michael R. Abdelaziz, Omar A. Jackson, Roderick K. Tolbert, Leon M. GP IEEE TI A Dynamic Simulation Tool for Estimating Demand Response Potential from Residential Loads SO 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) LA English DT Proceedings Paper CT 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) CY FEB 18-20, 2015 CL Washington, DC DE Occupant behavior modeling; Dynamic load modeling; Residential power demand; Demand response AB This paper presents a MATLAB based dynamic simulation tool for estimating demand response potential from residential loads. First, a review of residential demand response strategies is conducted. Next, the modeling approach used during the development of this tool is described. Markov chain based occupant behavior models constructed using data gathered by the U.S. Census Bureau in the American Time Use Survey (ATUS) are used in conjunction with models of the most common residential loads to predict the dynamic changes in residential power demand on a one-minute time scale. Separate control schemes are used along with these models to simulate different demand response strategies. Finally, simulation results showing the benefits and trade-offs associated with residential demand response programs are presented. Future work will involve using this tool to examine specific utility areas and the development of real-time pricing and incentive program components. C1 [Johnson, Brandon J.; Starke, Michael R.; Abdelaziz, Omar A.; Jackson, Roderick K.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Tolbert, Leon M.] Univ Tennessee, Dept Elect & Comp Sci, Knoxville, TN USA. RP Johnson, BJ (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-1785-3 PY 2015 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF3FK UT WOS:000380535300202 ER PT J AU Johnson, BJ Starke, MR Abdelaziz, OA Jackson, RK Tolbert, LM AF Johnson, Brandon J. Starke, Michael R. Abdelaziz, Omar A. Jackson, Roderick K. Tolbert, Leon M. GP IEEE TI A Dynamic Simulation Tool for Estimating Demand Response Potential from Residential Loads SO 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) LA English DT Proceedings Paper CT 2015 IEEE Power & Energy Society Innovative Smart Grid Technologies Conference (ISGT) CY FEB 18-20, 2015 CL Washington, DC DE Occupant behavior modeling; Dynamic load modeling; Residential power demand; Demand response AB This paper presents a MATLAB based dynamic simulation tool for estimating demand response potential from residential loads. First, a review of residential demand response strategies is conducted. Next, the modeling approach used during the development of this tool is described. Markov chain based occupant behavior models constructed using data gathered by the U.S. Census Bureau in the American Time Use Survey (ATUS) are used in conjunction with models of the most common residential loads to predict the dynamic changes in residential power demand on a one-minute time scale. Separate control schemes are used along with these models to simulate different demand response strategies. Finally, simulation results showing the benefits and trade-offs associated with residential demand response programs are presented. Future work will involve using this tool to examine specific utility areas and the development of real-time pricing and incentive program components. C1 [Johnson, Brandon J.; Starke, Michael R.; Abdelaziz, Omar A.; Jackson, Roderick K.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Tolbert, Leon M.] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN USA. RP Johnson, BJ (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-1785-3 PY 2015 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF3FK UT WOS:000380535300084 ER PT J AU Akimov, A Korepanov, A Anchugov, O Bak, P Gurov, S Pachkov, A Panov, A Shvedov, D Durfee, D Shaftan, T Singh, B Zuhoski, P AF Akimov, A. Korepanov, A. Anchugov, O. Bak, P. Gurov, S. Pachkov, A. Panov, A. Shvedov, D. Durfee, D. Shaftan, T. Singh, B. Zuhoski, P. GP IEEE TI PULSED POWER SUPPLIES FOR NSLS-II BOOSTER RING KICKER MAGNETS SO 2015 IEEE PULSED POWER CONFERENCE (PPC) LA English DT Proceedings Paper CT 2015 IEEE Pulsed Power Conference (PPC) CY MAY 31-JUN 04, 2015 CL Austin, TX AB The third generation light source NSLS-II was constructed at BNL, within the project a Booster ring commissioning was successfully completed [1]. Booster injection and extraction kicker magnets pulsed power supplies are considered in the paper. The injection pulsed supplies are capable of generating 0.7-1.5 kA current of 300 ns flat-top, 170 ns rise time, 170 ns fall time with ripples on the tail less then +/-0.5%. The extraction kicker is supplied with 2 kA pulse current of 300 ns duration and flat-top deviation less then +/-0.2%. 25-kV pulse forming networks built on ceramic capacitors and 10-kA TPI-type pseudospark switches are used in the generators design. Questions and improvements based on one-year PFNs and pseudosparks routine operation are described. Details of generators schematics and results obtained at the NSLS-II and BINP facilities are presented. C1 [Akimov, A.; Korepanov, A.; Anchugov, O.; Bak, P.; Gurov, S.; Pachkov, A.; Panov, A.; Shvedov, D.] Budker Inst Nucl Phys, 11 Lavrentiev St, Novosibirsk 630090, Russia. [Durfee, D.; Shaftan, T.; Singh, B.; Zuhoski, P.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Akimov, A (reprint author), Budker Inst Nucl Phys, 11 Lavrentiev St, Novosibirsk 630090, Russia. EM avakimov@inp.nsk.su NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8403-9 PY 2015 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA BF1SW UT WOS:000380434000076 ER PT J AU Arnold, PA Le Galloudec, BJ James, GF Acosta-Lech, D Foley, J Harkey, A Lao, N McIntosh, M Munguia, M Nghiem, H Schwedler, D Taylor, D AF Arnold, Phillip A. Le Galloudec, Bruno J. James, Glen F. Acosta-Lech, D. Foley, J. Harkey, A. Lao, N. McIntosh, M. Munguia, M. Nghiem, H. Schwedler, D. Taylor, D. GP IEEE TI POWER CONDITIONING IN THE NATIONAL IGNITION FACILITY SO 2015 IEEE PULSED POWER CONFERENCE (PPC) LA English DT Proceedings Paper CT 2015 IEEE Pulsed Power Conference (PPC) CY MAY 31-JUN 04, 2015 CL Austin, TX AB The National Ignition Facility (NIF) is a 192-beam inertial confinement fusion machine that has been fully operational since May 2009, with more limited operation as far back as 2002. The Power Conditioning System (PCS) supports the NIF mission by driving 7680 flashlamps that pump laser slabs in the main and power amplifiers of the infrared section of the laser. On a typical target shot PCS stores more than 325 MJ over the period of a minute before delivering the energy to the flashlamps. Peak current exceeds 100 MA and peak power exceeds 1 TW. PCS must operate reliably for hundreds of shots per year. C1 [Arnold, Phillip A.; Le Galloudec, Bruno J.; James, Glen F.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Acosta-Lech, D.; Foley, J.; Harkey, A.; Lao, N.; McIntosh, M.; Munguia, M.; Nghiem, H.; Schwedler, D.; Taylor, D.] Akima Infrastruct Serv, Livermore, CA USA. RP Arnold, PA (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8403-9 PY 2015 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BF1SW UT WOS:000380434000125 ER PT J AU Coffey, SK Lewis, B Joseph, N Torres, M Salazar, D Holman, E AF Coffey, Sean K. Lewis, Barbara Joseph, Nathan Torres, Matthew Salazar, Diego Holman, Ed GP IEEE TI IEEE-PPC-2015: HARDWARE AND SOFTWARE UPGRADES FOR THE SATURN DATA ACQUISITION TRIGGERS AND TIME BASE (work supported by the Dept. of Energy) SO 2015 IEEE PULSED POWER CONFERENCE (PPC) LA English DT Proceedings Paper CT 2015 IEEE Pulsed Power Conference (PPC) CY MAY 31-JUN 04, 2015 CL Austin, TX AB This paper summarizes the recent changes to the hardware and software systems associated with the diagnostic digitizer triggers and their data acquisition control program at the Saturn pulsed power facility at Sandia National Laboratories. The main screen room contains approximately 70 digitizing scopes for monitoring 6 voltage or current probes along each of its 36 energy storage and transmission lines. Each module locates probes along its length in an identical fashion so that by comparing the timing of similar probes on each line, a measure of the power flow time symmetry can be obtained. The probes from each line are recorded in scope groupings, each containing 36 channels. In numerous cases, the archived group time bases were not correctly quantified with respect to the other scope groupings. This was problematic when comparing signals from different scope groupings. The source of the errors was found to be how the scope groupings were triggered as well as a software error associated with two models of digitizers. We have implemented changes so that all scope groupings are time tied to a common reference. C1 [Coffey, Sean K.; Lewis, Barbara; Joseph, Nathan; Torres, Matthew; Salazar, Diego; Holman, Ed] Sandia Natl Labs, POB 5800 MS-1106, Albuquerque, NM 87185 USA. RP Coffey, SK (reprint author), Sandia Natl Labs, POB 5800 MS-1106, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8403-9 PY 2015 PG 10 WC Engineering, Electrical & Electronic SC Engineering GA BF1SW UT WOS:000380434000169 ER PT J AU Fulkerson, ES Telford, S Deri, R Bayramian, A Lanning, R Koh, E Charron, K Haefner, C AF Fulkerson, E. Stephen Telford, Steven Deri, Robert Bayramian, Andy Lanning, Rod Koh, Ed Charron, Ken Haefner, Constantin GP IEEE TI PULSED POWER SYSTEM FOR THE HAPLS DIODE PUMPED LASER SYSTEM SO 2015 IEEE PULSED POWER CONFERENCE (PPC) LA English DT Proceedings Paper CT 2015 IEEE Pulsed Power Conference (PPC) CY MAY 31-JUN 04, 2015 CL Austin, TX AB Industrial and Scientific High Energy Laser Systems with output energies in the Joule to Megajoule range typically rely on flash lamps to energize the gain media. Especially in rep rated laser systems the advantage of low capital cost per lamp is outweighed by many disadvantages, such as low pump efficiency, heating of the gain medium, frequent maintenance requirement, significant capital cost for its pulsed power system, and laser performance stability. Diode Pumped Solid State Laser (DPSSL) systems represent a viable alternative. In this paper we will present an efficient, integrated power conditioning system developed for the High-Repetition-Rate Advanced Petawatt Laser System (HAPLS) that is being developed by LLNL for deployment in the international user facility Extreme Light Infrastructure Beamlines (ELI-Beamlines) in Czech Republic [1]. The High Energy Pump Laser of HAPLS is energized by 4 High Peak Power Laser Diode Arrays with total peak power of 3.2 MW that were developed by Lasertel and LLNL. The diode arrays deliver similar to 1kJ at repetition rate 10Hz. Each diode array is comprised of 40 individual diode tiles where every tile generates >20 kilowatts of peak power. Each tile is driven by a single pulser that contains its own energy storage, control and high current drive circuitry. As part of the HAPLS laser the pulsers are operated at approximately 520A, a pulse width of 300 mu s at 10Hz. In another LLNL laser system basically identical pulsers are operated at 315A, 300us at 120Hz. The pulsers were designed to be operated in a support frame called a pulser crate. Each crate is designed to hold up to 45 pulsers in a volume similar to a desktop computer. Communication with the pulsers is by means of a one-way digital optical link which greatly simplifies the internal wiring. Each crate contains a "Brain Box" which in turn contains the front end processor (FEP), machine safety system (MSS) and energy storage dump subsystems. Providing flexibility and system balancing capability each pulser can be tailored to the diode tile: it has an internal Arbitrary Waveform Generator (AWG) on board that controls the shape of the diode current pulse. The AWG can vary the pulse shape in any combination of programmable increments with resolutions 1A and 1 mu s up to maximums of 1kA and 350 mu s. Under command of the crate controller each pulser can create its own distinct waveform and deliver that waveform when triggered. C1 [Fulkerson, E. Stephen; Telford, Steven; Deri, Robert; Bayramian, Andy; Lanning, Rod; Koh, Ed; Charron, Ken; Haefner, Constantin] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Fulkerson, ES (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8403-9 PY 2015 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BF1SW UT WOS:000380434000013 ER PT J AU Garanin, SF Kuznetsov, SD Reinovsky, RE AF Garanin, S. F. Kuznetsov, S. D. Reinovsky, R. E. GP IEEE TI STUDY OF THE FEASIBILITY OF WARM DENSE MATTER GENERATION USING METAL FOIL ELECTRIC EXPLOSION UNDER MEGAAMPERE CURRENT DRIVE SO 2015 IEEE PULSED POWER CONFERENCE (PPC) LA English DT Proceedings Paper CT 2015 IEEE Pulsed Power Conference (PPC) CY MAY 31-JUN 04, 2015 CL Austin, TX AB Warm Dense Matter (WDM) is the state of matter in the range between condensed matter and ideal plasma, which has higher temperature than condensed matter, but lower temperature and higher density than the traditional ideal plasma. In this range, which is often characterized by temperatures of 110(12)/s at 1-3 MeV). We propose a source that satisfies these requirements simultaneously plus also provides, via the reaction B-11(d, n)C-12(gamma(15.1)), a significant flux of 15-MeV photons, which are highly penetrating and optimal for inducing photo-fission in actinides. The source is based on a compact (< 5 m) deuteron RF accelerator that delivers an average current of a few mA of deuterons at 3-4 MeV to a boron target. The accelerator consists of a short RFQ followed by efficient inter-digital H-mode structures with permanent-magnet-quadrupole beam focusing [Kurennoy et al. (2012)], which suit perfectly for deuteron acceleration at low energies. Our estimates, based on recent measurements [Taddeucci et al. (2007)], indicate that the required fluxes of both neutrons and photons can be achieved at similar to 1 mA of 4-MeV deuterons. The goal of the proposed study is to confirm feasibility of the approach and develop requirements for future full-system implementation. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Kurennoy, S. S.; Garnett, R. W.; Rybarcyk, L. J.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Kurennoy, SS (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM kurennoy@lanl.gov OI Kurennoy, Sergey/0000-0003-2854-9647 NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 111 EP 116 DI 10.1016/j.phpro.2015.05.016 PG 6 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500015 ER PT S AU Meot, F Tahar, MH Tsoupas, N AF Meot, F. Tahar, M. Haj Tsoupas, N. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI High Power from Fixed-Field Rings in the Accelerator-Driven Sub-Critical Reactor Application SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE ADS; Proton driver; Fixed-field rings; Cyclotron; FFAG AB The interest of high-power, fixed-field ring methods in accelerator-driven sub-critical reactor proton driver applications is discussed. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Meot, F.; Tahar, M. Haj; Tsoupas, N.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Meot, F (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM fmeot@bnl.gov NR 19 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 129 EP 139 DI 10.1016/j.phpro.2015.05.018 PG 11 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500017 ER PT S AU Agustsson, R Boucher, S Finn, O Hartzell, J Ruelas, M Smirnov, AV Storms, S Ning, Z Murokh, A Campese, T Faillace, L Verma, A Kim, Y Buaphad, P Andrews, A Berls, B Eckman, C Folkman, K Knowles-Swingle, A O'Neill, C Smith, M Grandsaert, T van der Geer, B de Loos, M Berg, WJ Sereno, NS Sun, Y Zholents, AA AF Agustsson, R. Boucher, S. Finn, O. Hartzell, J. Ruelas, M. Smirnov, A. V. Storms, S. Ning, Z. Murokh, A. Campese, T. Faillace, L. Verma, A. Kim, Y. Buaphad, P. Andrews, A. Berls, B. Eckman, C. Folkman, K. Knowles-Swingle, A. O'Neill, C. Smith, M. Grandsaert, T. van der Geer, B. de Loos, M. Berg, W. J. Sereno, N. S. Sun, Y. Zholents, A. A. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Laser-Free RF-Gun as a Combined Source of Thz and Ps-Sub-Ps X-Rays SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE Terahertz; radiation; X-rays; electron beam; RF gun; Cherenkov; sub-ps; pulse; alpha-magnet; slow-wave structure; group velocity ID PICOSECOND PULSE-RADIOLYSIS; SOLVATED ELECTRON AB A coherent, mm-sub-mm-wave source driven by a RF electron gun is proposed for wide research applications as well as auxiliary inspection and screening, safe imaging, cancer diagnostics, surface defectoscopy, and enhanced time-domain spectroscopy. It allows generation of high peak and average THz-sub-THz radiation power provided by beam pre-bunching and chirping in the RF gun followed by microbunching in magnetic compressor, and resonant Cherenkov radiation of an essentially flat beam in a robust, similar to inch-long, planar, mm-sub-mm gap structure. The proof-of-principle has been successfully demonstrated in Phase I on a 5 MeV beam of L-band thermionic injector of Idaho Accelerator Center. The system can also deliver an intense, ps-sub-ps bursts of low-to-moderate dose of relativistic electrons and X-ray radiation produced by the same beam required for pulsed radiolysis as well as to enhance screening efficiency, throughput and safety. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Agustsson, R.; Boucher, S.; Finn, O.; Hartzell, J.; Ruelas, M.; Smirnov, A. V.; Storms, S.; Ning, Z.; Murokh, A.; Campese, T.; Faillace, L.; Verma, A.] RadiaBeam Technol, 1717 Stewart, Santa Monica, CA 90404 USA. [Kim, Y.; Buaphad, P.] Idaho State Univ, Pocatello, ID 83209 USA. [Kim, Y.; Andrews, A.; Berls, B.; Eckman, C.; Folkman, K.; Knowles-Swingle, A.; O'Neill, C.; Smith, M.] Idaho Accelerator Ctr, Pocatello, ID 83201 USA. [Grandsaert, T.] European Spallat Source, S-22100 Lund, Sweden. [van der Geer, B.; de Loos, M.] Pulsar Phys, NL-5614 BC Eindhoven, Netherlands. [Berg, W. J.; Sereno, N. S.; Sun, Y.; Zholents, A. A.] Argonne Natl Lab, Adv Photon Source, Argonne, IL 60439 USA. RP Smirnov, AV (reprint author), RadiaBeam Technol, 1717 Stewart, Santa Monica, CA 90404 USA. EM asmirnov@radiabeam.com NR 14 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 156 EP 165 DI 10.1016/j.phpro.2015.05.021 PG 10 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500020 ER PT S AU Garnett, RW AF Garnett, Robert W. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Overview of Accelerators with Potential Use in Homeland Security SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE accelerators; homeland security; defense AB Quite a broad range of accelerators have been applied to solving many of the challenging problems related to homeland security and defense. These accelerator systems range from relatively small, simple, and compact, to large and complex, based on the specific application requirements. They have been used or proposed as sources of primary and secondary probe beams for applications such as radiography and to induce specific reactions that are key signatures for detecting conventional explosives or fissile material. A brief overview and description of these accelerator systems, their specifications, and application will be presented. Some recent technology trends will also be discussed. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Garnett, Robert W.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Garnett, RW (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM rgarnett@lanl.gov NR 24 TC 0 Z9 0 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 196 EP 205 DI 10.1016/j.phpro.2015.05.026 PG 10 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500025 ER PT S AU Mitra, SS Doron, O Chen, AX Antolak, AJ AF Mitra, S. S. Doron, O. Chen, A. X. Antolak, A. J. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Rapid Response Sensor for Analyzing Special Nuclear Material SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE Special Nuclear Material; non-destructive analysis; pulsed (D-D) neutron generator; multiple time resolved gamma-ray spectra ID INTERROGATION AB Rapid in-situ analytical techniques are attractive for characterizing Special Nuclear Material (SNM). Present techniques are time consuming, and require sample dissolution. Proof-of-principal studies are performed to demonstrate the utility of employing low energy neutrons from a portable pulsed neutron generator for non-destructive isotopic analysis of nuclear material. In particular, time-sequenced data acquisition, operating synchronously with the pulsing of a neutron generator, partitions the characteristic elemental prompt gamma-rays according to the type of the reaction; inelastic neutron scattering reactions during the ON state and thermal neutron capture reactions during the OFF state of the generator. The key challenge is isolating these signature gamma-rays from the prompt fission and beta-delayed gamma-rays that are also produced during the neutron interrogation. A commercial digital multi-channel analyzer has been specially customized to enable time-resolved gamma-ray spectral data to be acquired in multiple user-defined time bins within each of the ON/OFF gate periods of the neutron generator. Preliminary results on new signatures from depleted uranium as well as modeling and benchmarking of the concept are presented, but this approach should should be applicable for virtually all forms of SNM Published by Elsevier B.V. C1 [Mitra, S. S.; Doron, O.] Sandia Natl Labs, POB 5800 MS 0968, Albuquerque, NM 87185 USA. [Chen, A. X.] Adelphi Technol Inc, Redwood City, CA 94063 USA. [Antolak, A. J.] Sandia Natl Labs, Livermore, CA 94550 USA. RP Mitra, SS (reprint author), Sandia Natl Labs, POB 5800 MS 0968, Albuquerque, NM 87185 USA. EM ssmitra@sandia.gov NR 11 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 226 EP 231 DI 10.1016/j.phpro.2015.05.029 PG 6 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500028 ER PT S AU Meot, F AF Meot, F. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI A Multiple-Room, Continuous Beam Delivery, Hadron-Therapy Installation SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE FFAG; spiral scaling FFAG; fixed field accelerator; medical accelerator; hadron-therapy AB A proton-therapy hospital installation, based on multiple beam extraction systems from a fixed-field synchrotron, is presented and commented. Potential interest as hospital operation efficiency, as well as estimates of the impact of continuous, multiple-port extraction, on the cost of a session, are discussed. C1 [Meot, F.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Meot, F (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM fmeot@bnl.gov NR 23 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 361 EP 369 DI 10.1016/j.phpro.2015.05.045 PG 9 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500044 ER PT S AU Tsoupas, N Kayran, D Litvinenko, V AF Tsoupas, N. Kayran, D. Litvinenko, V. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Achromatic and Uncoupled Medical Gantry SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE medical gantry; achromatic; uncoupled AB One of the functions of a medical gantry is to irradiate a tumor from different angles to reduce the dose received by the healthy tissue which surrounds the tumor. The rotation of the gantry rotates also its quadrupoles that focus the beam, as a result the beam is "coupled" in the sense that the horizontal motion of the beam particles is affected by the vertical motion and vice-versa therefore the beam spot size at the tumor may vary with the angular orientation of the gantry. Although such a beam-coupling is inevitable in a rotated gantry in which the horizontal plane is not the symmetry plane of the quadrupoles, it is possible to find a solution that the optics of the gantry "appears uncoupled" at any angular orientation of the gantry. As we show in the paper, the condition of an uncoupled gantry is equivalent to an uncoupled linear-beam-transport-matrix which is independent of the angular orientation of the gantry, therefore the beam spot size at the location of the tumor is independent of the orientation of the gantry. In this paper we present the theoretical basis to generate the beam optics for a gantry which is constrained to provide uncoupled and also achromatic beam transport to the location of the tumor. In addition we present the layout of the magnetic elements and the optics of a medical gantry which satisfies the achromaticity and uncoupled conditions. Published by Elsevier B.V. C1 [Tsoupas, N.; Kayran, D.; Litvinenko, V.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Tsoupas, N (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM tsoupas@bnl.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 376 EP 382 DI 10.1016/j.phpro.2015.05.047 PG 7 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500046 ER PT S AU Wellington, TA Palles, BA Mullens, JA Mihalczo, JT Archer, DE Thompson, T Britton, CL Ezell, NDB Ericson, MN Farquhar, E Lind, R Carter, J AF Wellington, T. A. Palles, B. A. Mullens, J. A. Mihalczo, J. T. Archer, D. E. Thompson, T. Britton, C. L. Ezell, N. D. Bull Ericson, M. N. Farquhar, E. Lind, R. Carter, J. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Recent Fast Neutron Imaging Measurements with the Fieldable Nuclear Materials Identification System SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE nonproliferation; arms control; DT neutron generators; fast neutron imaging; associated particle imaging AB This paper describes recent fast-neutron imaging measurements of the fieldable nuclear materials identification system (FNMIS) under development by Oak Ridge National Laboratory with National Nuclear Security Administration (NNSA-NA-22) support for possible future use in arms control and nonproliferation applications. This paper presents initial imaging measurements performed at Oak Ridge National Laboratory with a Thermo Fisher API 120 DT generator and the fast-neutron imaging module of the FNMIS. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Wellington, T. A.; Palles, B. A.; Carter, J.] Univ Tennessee, Bredesen Ctr Interdisciplinary Res & Educ, Knoxville, TN 37996 USA. [Mullens, J. A.; Mihalczo, J. T.; Archer, D. E.; Britton, C. L.; Ezell, N. D. Bull; Ericson, M. N.; Farquhar, E.; Lind, R.; Carter, J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Thompson, T.] Cadre5 LLC, Knoxville, TN 37932 USA. RP Wellington, TA (reprint author), Univ Tennessee, Bredesen Ctr Interdisciplinary Res & Educ, Knoxville, TN 37996 USA. EM twelling@vols.utk.edu RI Ezell, Nora/C-3942-2016; OI Ezell, Nora/0000-0001-9334-5822; Wellington, Tracey-Ann/0000-0001-5913-9945 NR 8 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 432 EP 438 DI 10.1016/j.phpro.2015.05.054 PG 7 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500053 ER PT S AU Alshudifat, M Grzywacz, R Paulauskas, SV AF Alshudifat, Mohammad Grzywacz, R. Paulauskas, S. V. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Development of a Segmented Scintillator for Decay Studies SO 23RD INTERNATIONAL CONFERENCE ON THE APPLICATION OF ACCELERATORS IN RESEARCH AND INDUSTRY - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE PSPMT; Position localization; Time Resolution; Implantation; Fragmentation type experiments ID SYSTEM AB A new detector was developed, which will enable future studies of neutron-rich isotopes. It is intended for use in fragmentation type experiments, which require segmentation in order to enable implantation-decay correlations. In addition, the detector requires good timing resolution for neutron time-of-flight experiments. A Position Sensitive Photo-Multiplier Tube (PSPMT) from Hamamatsu coupled with a fast pixelated plastic scintillator was used. Position localization of the nuclear radiation interaction with the detector has been achieved for energies up to 5 MeV. The detector provides sub-nanosecond time resolution through the use of a pulse-shape analysis algorithm, which is sufficient for time-of-flight experiments. The detector was tested with a laser pulser in order to simulate 1 GeV implantation energy and found to be capable to be used with high-energy heavy ions. Published by Elsevier B.V. C1 [Alshudifat, Mohammad; Grzywacz, R.; Paulauskas, S. V.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Grzywacz, R.] Oak Ridge Natl Lab, Phys Devis, Oak Ridge, TN 37830 USA. RP Alshudifat, M (reprint author), Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. EM malshudi@vols.utk.edu OI Paulauskas, Stanley/0000-0002-6479-4626 NR 11 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 445 EP 450 DI 10.1016/j.phpro.2015.05.056 PG 6 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500055 ER PT S AU Bardayan, DW Chipps, KA Ahn, S Blackmon, JC Greife, U Jones, KL Kontos, A Kozub, RL Linhardt, L Manning, B Matos, M O'Malley, PD Ota, S Pain, SD Peters, WA Pittman, ST Sachs, A Schatz, H Schmitt, KT Smith, MS Thompson, P AF Bardayan, D. W. Chipps, K. A. Ahn, S. Blackmon, J. C. Greife, U. Jones, K. L. Kontos, A. Kozub, R. L. Linhardt, L. Manning, B. Matos, M. O'Malley, P. D. Ota, S. Pain, S. D. Peters, W. A. Pittman, S. T. Sachs, A. Schatz, H. Schmitt, K. T. Smith, M. S. Thompson, P. CA JENSA Collaboration BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI The JENSA Gas-Jet Target for Radioactive Beam Experiments at ReA3 and FRIB SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE gas target; radioactive beams; transfer reactions ID ASTROPHYSICS; DETECTOR AB A high-density supersonic gas-jet target named JENSA (Jet Experiments in Nuclear Structure and Astrophysics) has been constructed and commissioned at Oak Ridge National Laboratory. The target creates a localized (similar to 4 mm wide) thick (similar to 1019 atoms/cm(2)) concentration of gaseous atoms (H, He, N, etc...) that are suitable for use in high-resolution experiments with radioactive beams. The interaction point of the beam with the gas-jet target is surrounded by silicon strip detectors from the SuperORRUBA (Oak Ridge Rutgers University Barrel Array) to detect reaction products with good energy (similar to 30 keV) and angular resolution (similar to 1 degree). Initial experiments are discussed along with plans for future use at Michigan State University. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Bardayan, D. W.; O'Malley, P. D.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Chipps, K. A.; Greife, U.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. [Chipps, K. A.; Matos, M.; Pain, S. D.; Peters, W. A.; Pittman, S. T.; Schmitt, K. T.; Smith, M. S.] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA. [Chipps, K. A.; Ahn, S.; Jones, K. L.; Matos, M.; Peters, W. A.; Pittman, S. T.; Sachs, A.; Schmitt, K. T.; Thompson, P.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Blackmon, J. C.; Linhardt, L.] Louisiana State Univ, Dept Phys & Astron, Baton Rouge, LA 70803 USA. [Kontos, A.; Schatz, H.] Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. [Kozub, R. L.] Tennessee Technol Univ, Dept Phys, Cookeville, TN 38505 USA. [Manning, B.; Ota, S.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA. RP Bardayan, DW (reprint author), Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. EM danbardayan@nd.edu RI Jones, Katherine/B-8487-2011; Peters, William/B-3214-2012; Pain, Steven/E-1188-2011 OI Jones, Katherine/0000-0001-7335-1379; Peters, William/0000-0002-3022-4924; Chipps, Kelly/0000-0003-3050-1298; Pain, Steven/0000-0003-3081-688X NR 21 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 451 EP 456 DI 10.1016/j.phpro.2015.05.057 PG 6 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500056 ER PT S AU Burns, K Wootan, D Gates, R Schmitt, B Asner, DM AF Burns, K. Wootan, D. Gates, R. Schmitt, B. Asner, D. M. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI How to Produce a Reactor Neutron Spectrum Using a Proton Accelerator SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE proton accelerator target design; neutron spectrum; spectral tailoring; MCNP; ANSYS AB A method for reproducing the neutron energy spectrum present in the core of an operating nuclear reactor using an engineered target in an accelerator proton beam is proposed. The protons interact with a target to create neutrons through various (p,n) type reactions. Spectral tailoring of the emitted neutrons can be used to modify the energy of the generated neutron spectrum to represent various reactor spectra. Through the use of moderators and reflectors, the neutron spectrum can be modified to reproduce many different spectra of interest including spectra in small thermal test reactors, large pressurized water reactors, and fast reactors. The particular application of this methodology is the design of an experimental approach for using an accelerator to measure the betas produced during fission to be used to reduce uncertainties in the interpretation of reactor antineutrino measurements. This approach involves using a proton accelerator to produce a neutron field representative of a power reactor, and using this neutron field to irradiate fission foils of the primary isotopes contributing to fission in the reactor, creating unstable, neutron rich fission products that subsequently beta decay and emit electron antineutrinos. A major advantage of an accelerator neutron source over a neutron beam from a thermal reactor is that the fast neutrons can be slowed down or tailored to approximate various power reactor spectra. An accelerator based neutron source that can be tailored to match various reactor neutron spectra provides an advantage for control in studying how changes in the neutron spectra affect parameters such as the resulting fission product beta spectrum. Published by Elsevier B.V. C1 [Burns, K.; Wootan, D.; Gates, R.; Schmitt, B.; Asner, D. M.] Pacific Northwest Natl Lab, POB 999, Richland, WA 99353 USA. RP Burns, K (reprint author), Pacific Northwest Natl Lab, POB 999, Richland, WA 99353 USA. EM Kimberly.Burns@pnnl.gov NR 6 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 471 EP 480 DI 10.1016/j.phpro.2015.05.060 PG 10 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500059 ER PT S AU Franz, A AF Franz, Achim CA PHENIX Collaboration BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Future Upgrades for the PHENIX Experiment at RHIC: From PHENIX to sPHENIX And Beyond SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE RHIC; heavy ion; QGP; jets; calorimetry; R&D AB A series of major upgrades are being planned for the PHENIX experiment at the Relativistic Heavy Ion Collider (RHIC) to enable a comprehensive measurement of jets and quarkonia in relativistic heavy ion collisions in order to study the phase transition of normal nuclear matter to the Quark Gluon Plasma near its critical temperature. These upgrades will include a number of major new detector systems. The former BaBar solenoid magnet will be incorporated in the first stage, sPHENIX. Further upgrades will include two new large calorimeters. In the following these upgrades and their requirements are being presented. Published by Elsevier B.V. C1 [Franz, Achim; PHENIX Collaboration] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. RP Franz, A (reprint author), Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. EM afranz@bnl.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 489 EP 493 DI 10.1016/j.phpro.2015.05.063 PG 5 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500061 ER PT S AU Schambach, J Anderssen, E Contin, G Greiner, L Silber, J Stezelberger, T Sun, XM Szelezniak, M Videbaek, F Vu, C Wieman, H Woodmansee, S AF Schambach, Joachim Anderssen, Eric Contin, Giacomo Greiner, Leo Silber, Joe Stezelberger, Thorsten Sun, Xiangming Szelezniak, Michal Videbaek, Flemming Vu, Chinh Wieman, Howard Woodmansee, Sam BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI A MAPS Based Micro-Vertex Detector for the STAR Experiment SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE Monlithic Active Pixel Sensor; Vertex Detector; Heavy Flavor; Silicon Detector AB For the 2014 heavy ion run of RHIC a new micro-vertex detector called the Heavy Flavor Tracker (HFT) was installed in the STAR experiment. The HFT consists of three detector subsystems with various silicon technologies arranged in 4 approximately concentric cylinders close to the STAR interaction point designed to improve the STAR detector's vertex resolution and extend its measurement capabilities in the heavy flavor domain. The two innermost HFT layers are placed at radii of 2.8 cm and 8 cm from the beam line. These layers are constructed with 400 high resolution sensors based on CMOS Monolithic Active Pixel Sensor ( MAPS) technology arranged in 10-sensor ladders mounted on 10 thin carbon fiber sectors to cover a total silicon area of 0.16 m(2). Each sensor of this PiXeL("PXL") sub-detector combines a pixel array of 928 rows and 960 columns with a 20.7 mu m pixel pitch together with front-end electronics and zero-suppression circuitry in one silicon die providing a sensitive area of similar to 3.8 cm(2). This sensor architecture features 185.6 mu s readout time and 170 mW/cm(2) power dissipation. This low power dissipation allows the PXL detector to be air-cooled, and with the sensors thinned down to 50 mu m results in a global material budget of only 0.4% radiation length per layer. A novel mechanical approach to detector insertion allows us to effectively install and integrate the PXL sub-detector within a 12 hour period during an on-going multi-month data taking period. The detector requirements, architecture and design, as well as the performance after installation, are presented in this paper. (C) 2015 The Authors. Published Elsevier B.V. C1 [Schambach, Joachim] Univ Texas Austin, 1 Univ Stn, Austin, TX 78712 USA. [Anderssen, Eric; Contin, Giacomo; Greiner, Leo; Silber, Joe; Stezelberger, Thorsten; Vu, Chinh; Wieman, Howard; Woodmansee, Sam] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Sun, Xiangming] CCNU, Wuhan, Peoples R China. [Szelezniak, Michal] IPHC, Strasbourg, France. [Videbaek, Flemming] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Schambach, J (reprint author), Univ Texas Austin, 1 Univ Stn, Austin, TX 78712 USA. EM jschamba@physics.utexas.edu NR 6 TC 3 Z9 3 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 514 EP 519 DI 10.1016/j.phpro.2015.05.067 PG 6 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500065 ER PT S AU Wrede, C Bennett, MB Liddick, SN Bardayan, DW Bowe, A Brown, BA Chen, AA Chipps, KA Cooper, N Fry, C Glassman, B Irvine, D Jose, J Langer, C Larson, N McNeice, EI Meisel, Z Montes, F Naqvi, F Pain, SD O'Malley, P Ortez, R Ong, W Pereira, J Perez-Loureiro, D Prokop, C Quaglia, J Quinn, S Santia, M Schatz, H Schwartz, SB Simon, A Shanab, S Spyrou, A Suchyta, S Thiagalingam, E Thompson, P Walters, M AF Wrede, C. Bennett, M. B. Liddick, S. N. Bardayan, D. W. Bowe, A. Brown, B. A. Chen, A. A. Chipps, K. A. Cooper, N. Fry, C. Glassman, B. Irvine, D. Jose, J. Langer, C. Larson, N. McNeice, E. I. Meisel, Z. Montes, F. Naqvi, F. Pain, S. D. O'Malley, P. Ortez, R. Ong, W. Pereira, J. Perez-Loureiro, D. Prokop, C. Quaglia, J. Quinn, S. Santia, M. Schatz, H. Schwartz, S. B. Simon, A. Shanab, S. Spyrou, A. Suchyta, S. Thiagalingam, E. Thompson, P. Walters, M. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI beta Decay as a Probe of Explosive Nucleosynthesis in Classical Novae SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX ID FRAGMENT SEPARATOR; BEAMS; AL-26 AB Classical novae are common thermonuclear explosions in the Milky Way galaxy, occurring on the surfaces of white-dwarf stars that are accreting hydrogen-rich material from companion stars. Nucleosynthesis in classical novae depends on radiative proton capture reaction rates on radioactive nuclides. Many of these reactions cannot be measured directly at current accelerator facilities due to the lack of intense, high-quality, radioactive-ion beams at the relevant energies. Since most of these reactions proceed via resonant capture, their rates can be determined indirectly by measuring the properties of the resonances. At the National Superconducting Cyclotron Laboratory, we have used the beta-delayed gamma decays of P-26 and Cl-31 to populate resonances in Si-26 and S-31 and study the radiative proton captures on Al-25 and P-30, respectively. These were two out of the three most important nuclear-physics uncertainties associated with the observable products of nova nucleosynthesis. The P-26 experiment has enabled a more accurate estimate of the nova contribution to the long-lived Galactic Al-26 detected with gamma-ray telescopes. The Cl-31 experiment, currently under analysis, will calibrate potential nova thermometers and mixing meters based on elemental abundance ratios, and facilitate the identification of pre-solar nova grain candidates found in primitive meteorites based on isotopic ratios. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Wrede, C.; Bennett, M. B.; Bowe, A.; Brown, B. A.; Fry, C.; Glassman, B.; Meisel, Z.; Ortez, R.; Ong, W.; Quinn, S.; Santia, M.; Schatz, H.; Schwartz, S. B.; Shanab, S.; Spyrou, A.] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Wrede, C.; Bennett, M. B.; Liddick, S. N.; Bowe, A.; Brown, B. A.; Fry, C.; Glassman, B.; Langer, C.; Larson, N.; Meisel, Z.; Montes, F.; Ortez, R.; Ong, W.; Pereira, J.; Perez-Loureiro, D.; Prokop, C.; Quaglia, J.; Quinn, S.; Santia, M.; Schatz, H.; Schwartz, S. B.; Simon, A.; Shanab, S.; Spyrou, A.; Suchyta, S.] Michigan State Univ, Natl Superconducting Cyclotron Lab, E Lansing, MI 48824 USA. [Wrede, C.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Liddick, S. N.; Larson, N.; Prokop, C.; Suchyta, S.] Michigan State Univ, Dept Chem, E Lansing, MI 48824 USA. [Bardayan, D. W.; O'Malley, P.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Chen, A. A.; Irvine, D.; McNeice, E. I.; Thiagalingam, E.; Walters, M.] McMaster Univ, Dept Phys, Hamilton, ON L8S 4M1, Canada. [Chipps, K. A.] Colorado Sch Mines, Dept Phys, Golden, CO 80401 USA. [Jose, J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Chipps, K. A.; Pain, S. D.; Thompson, P.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Cooper, N.; Naqvi, F.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Cooper, N.; Naqvi, F.] Yale Univ, Wright Nucl Struct Lab, New Haven, CT 06520 USA. [Jose, J.] Dept Fis & Engn Nucl UPC, E-08034 Barcelona, Spain. [Jose, J.] IEEC, E-08034 Barcelona, Spain. [Langer, C.; Montes, F.; Quaglia, J.; Schatz, H.; Simon, A.; Spyrou, A.] Michigan State Univ, Joint Inst Nucl Astrophys, E Lansing, MI 48824 USA. [Quaglia, J.] Michigan State Univ, Dept Elect Engn, E Lansing, MI 48824 USA. [Schwartz, S. B.] Univ Southern Indiana, Dept Geol & Phys, Evansville, IN 47712 USA. RP Wrede, C (reprint author), Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. RI Larson, Nicole/S-5997-2016; Pain, Steven/E-1188-2011 OI Larson, Nicole/0000-0003-0292-957X; Chipps, Kelly/0000-0003-3050-1298; Pain, Steven/0000-0003-3081-688X NR 20 TC 0 Z9 0 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 532 EP 536 DI 10.1016/j.phpro.2015.05.070 PG 5 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500068 ER PT S AU Auden, EC Doyle, BL Bielejec, E Vizkelethy, G Wampler, WR AF Auden, Elizabeth C. Doyle, Barney L. Bielejec, Edward Vizkelethy, Gyorgy Wampler, William R. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Optimization of a Low Noise Detection Circuit for Probing the Structure of Damage Cascades with IBIC SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE damage cascades; IBIC; ion implantation; low noise diodes; preamplifier circuits; single particle displacement damage ID SEMICONDUCTOR-DEVICES; SILICON AB Optimal detector / pre-amplifier combinations have been identified for the use of light ion IBIC (ion beam induced charge) to probe the physical structure of electrically active defects in damage cascades caused by heavy ion implantation. The ideal detector must have a sufficiently thin dead layer that incident ions will produce the majority of damage cascades in the depletion region of the detector rather than the dead layer. Detector and circuit noise must be low enough to detect the implantation of a single heavy ion as well as the decrease in the light ion IBIC signal caused by Shockley-Read-Hall recombination when the beam scans regions of the detector damaged by the heavy ion. The IBIC signals from three detectors irradiated with 750 keV He+ ions are measured with commercial and bespoke charge sensitive pre-amplifiers to identify the combination with the lowest noise. (C) 2014 The Authors. Published by Elsevier B.V. C1 [Auden, Elizabeth C.; Doyle, Barney L.; Bielejec, Edward; Vizkelethy, Gyorgy; Wampler, William R.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Auden, EC (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM eauden@sandia.gov NR 20 TC 0 Z9 0 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 561 EP 567 DI 10.1016/j.phpro.2015.05.075 PG 7 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500073 ER PT S AU Persaud, A Barnard, JJ Guo, H Hosemann, P Lidia, S Minor, AM Seidl, PA Schenkel, T AF Persaud, A. Barnard, J. J. Guo, H. Hosemann, P. Lidia, S. Minor, A. M. Seidl, P. A. Schenkel, T. BE Doyle, BL Glass, GA McDaniel, FD Wang, Y Parriott, CR TI Accessing Defect Dynamics using Intense, Nanosecond Pulsed Ion Beams SO 23rd International Conference on the Application of Accelerators in Research and Industry - CAARI 2014 SE Physics Procedia LA English DT Proceedings Paper CT 23rd International Conference on the Application of Accelerators in Research and Industry (CAARI) CY MAY 25-30, 2014 CL San Antonio, TX DE defects dynamics; radiation defects; pump-probe experiments; ion channeling; accelerator ID IMPLANTATION; CHALLENGES AB Gaining in-situ access to relaxation dynamics of radiation induced defects will lead to a better understanding of materials and is important for the verification of theoretical models and simulations. We show preliminary results from experiments at the new Neutralized Drift Compression Experiment (NDCX-II) at Lawrence Berkeley National Laboratory that will enable in-situ access to defect dynamics through pump-probe experiments. Here, the unique capabilities of the NDCX-II accelerator to generate intense, nanosecond pulsed ion beams are utilized. Preliminary data of channeling experiments using lithium and potassium ions and silicon membranes are shown. We compare these data to simulation results using Crystal Trim. Furthermore, we discuss the improvements to the accelerator to higher performance levels and the new diagnostics tools that are being incorporated. (C) 2014 The Authors. Published by Elsevier B.V. C1 [Persaud, A.; Lidia, S.; Seidl, P. A.; Schenkel, T.] Lawrence Berkeley Natl Lab, Accelerator & Fus Res Div, Berkeley, CA 94720 USA. [Barnard, J. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Guo, H.; Hosemann, P.; Minor, A. M.] Lawrence Berkeley Natl Lab, Mat Sci Div, Berkeley, CA 94720 USA. [Hosemann, P.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [Minor, A. M.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. RP Persaud, A (reprint author), Lawrence Berkeley Natl Lab, Accelerator & Fus Res Div, Berkeley, CA 94720 USA. EM apersaud@lbl.gov NR 12 TC 2 Z9 3 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 66 BP 604 EP 609 DI 10.1016/j.phpro.2015.05.080 PG 6 WC Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Physics GA BF3UY UT WOS:000380585500078 ER PT S AU Hutchins, MJ Bhinge, R Micali, MK Robinson, SL Sutherland, JW Dornfeld, D AF Hutchins, Margot J. Bhinge, Raunak Micali, Maxwell K. Robinson, Stefanie L. Sutherland, John W. Dornfeld, David BE Shih, AJ Wang, LH TI Framework for Identifying Cybersecurity Risks in Manufacturing SO 43RD NORTH AMERICAN MANUFACTURING RESEARCH CONFERENCE, NAMRC 43 SE Procedia Manufacturing LA English DT Proceedings Paper CT 43rd North American Manufacturing Research Conference, NAMRC 43 CY JUN 08-12, 2015 CL Charlotte, NC DE Cybersecurity; Risk; Data Analytics; Advanced Manufacturing AB Increasing connectivity, use of digital computation, and off-site data storage provide potential for dramatic improvements in manufacturing productivity, quality, and cost. However, there are also risks associated with the increased volume and pervasiveness of data that are generated and potentially accessible to competitors or adversaries. Enterprises have experienced cyber attacks that exfiltrate confidential and/or proprietary data, alter information to cause an unexpected or unwanted effect, and destroy capital assets. Manufacturers need tools to incorporate these risks into their existing risk management processes. This paper establishes a framework that considers the data flows within a manufacturing enterprise and throughout its supply chain. The framework provides several mechanisms for identifying generic and manufacturing-specific vulnerabilities and is illustrated with details pertinent to an automotive manufacturer. In addition to providing manufacturers with insights into their potential data risks, this framework addresses an outcome identified by the NIST Cybersecurity Framework. C1 [Hutchins, Margot J.] Sandia Natl Labs, Livermore, CA 94550 USA. [Bhinge, Raunak; Micali, Maxwell K.; Robinson, Stefanie L.; Dornfeld, David] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Sutherland, John W.] Purdue Univ, W Lafayette, IN 47907 USA. RP Hutchins, MJ (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM mjhutch@sandia.gov; raunakbh@berkeley.edu NR 39 TC 2 Z9 2 U1 2 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2351-9789 J9 PROCEDIA MANUF PY 2015 VL 1 BP 47 EP 63 DI 10.1016/j.promg.2015.09.060 PG 17 WC Engineering, Manufacturing SC Engineering GA BF2ZE UT WOS:000380512300005 ER PT S AU Das, PK Santamaria, AD Weber, AZ AF Das, Prodip K. Santamaria, Anthony D. Weber, Adam Z. BE Islam, AKMS Amin, MR Ali, M Setoguchi, T TI Interactions between liquid-water and gas-diffusion layers in polymer-electrolyte fuel cells SO 6th BSME International Conference on Thermal Engineering SE Procedia Engineering LA English DT Proceedings Paper CT The 6th BSME International Conference on Thermal Engineering CY DEC 19-21, 2014 CL Dhaka, BANGLADESH DE Polymer-electrolyte fuel cells; Liquid-water; Water-management; Gas-diffusion layers AB Over the past few decades, a significant amount of research on polymer-electrolyte fuel cells (PEFCs) has been conducted to improve performance and durability while reducing the cost of fuel cell systems. However, the cost associated with the platinum (Pt) catalyst remains a barrier to their commercialization and PEFC durability standards have yet to be established. An effective path toward reducing PEFC cost is making the catalyst layers (CLs) thinner thus reducing expensive Pt content. The limit of thin CLs is high gas-transport resistance and the performance of these CLs is sensitive to the operating temperature due to their inherent low water uptake capacity, which results in higher sensitivity to liquid-water flooding and reduced durability. Therefore, reducing PEFC's cost by decreasing Pt content and improving PEFC's performance and durability by managing liquid-water are still challenging and open topics of research. An overlooked aspect nowadays of PEFC water management is the gas-diffusion layer (GDL). While it is known that GDL's properties can impact performance, typically it is not seen as a critical component. In this work, we present data showing the importance of GDLs in terms of water removal and management while also exploring the interactions between liquid-water and GDL surfaces. The critical interface of GDL and gas-flow-channel in the presence of liquid-water was examined through systematic studies of adhesion forces as a function of water-injection rate for various GDLs of varying thickness. GDL properties (breakthrough pressure and adhesion force) were measured experimentally under a host of test conditions. Specifically, the effects of GDL hydrophobic (PTFE) content, thickness, and water-injection rate were examined to identify trends that may be beneficial to the design of liquid-water management strategies and next-generation GDL materials for PEFCs. (C) 2015 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license C1 [Das, Prodip K.] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. [Santamaria, Anthony D.] Western New England Univ, Dept Mech Engn, Springfield, MA 01119 USA. [Weber, Adam Z.] Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Das, PK (reprint author), Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. EM prodip.das@ncl.ac.uk OI Das, Prodip/0000-0001-9096-3721 NR 7 TC 1 Z9 1 U1 3 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 105 BP 751 EP 756 DI 10.1016/j.proeng.2015.05.066 PG 6 WC Engineering, Multidisciplinary; Engineering, Mechanical SC Engineering GA BF2UZ UT WOS:000380503100094 ER PT J AU Dai, LY Shi, M Tang, GY Zheng, HQ AF Dai, L. Y. Shi, M. Tang, G. Y. Zheng, H. Q. BE Geng, LS Meng, J Zhao, Q Zou, BS TI How to distinguish a molecule from an 'elementary' particle? SO Chiral Symmetry in Hadrons and Nuclei LA English DT Proceedings Paper CT International Workshop on Chiral Symmetry in Hadrons and Nuclei CT 7th International Symposium on Chiral Symmetry in Hadrons and Nuclei (Chiral 2013) CY JUN 21-24, 2010 CY OCT 27-30, 2013 CL Valencia, SPAIN CL Beihang University, Beijing, PEOPLES R CHINA SP Minist Ciencia Innovac, Ctr Nacl Fisica Particulas, Astroparticulas Fisica Nucl, Consejo Superior Investigaciones Cientificas, Inst Fis Teor, Univ Valencia HO Beihang University DE Hadronic molecule; chiral symmetry; X(3872); f(0)(980) ID SCATTERING; AMPLITUDES AB We discuss how to use Morgan's pole counting rule to distinguish a molecular state from an 'elementary' particle. As two examples we focus on X(3872) and f(0)(980) particles. A molecule may be generated from a meson loop bubble chain, and an 'elementary' particle is related to an explicit interaction field in the effective lagrangian and propagates with a Breit-Wigner propagator. For X(3872) it is found that the data favor the 'elementary' particle explanation. For f(0)(980) the study becomes much more difficult, since highly non-perturbative dynamics is involved. A unitarization model analysis suggests that f(0)(980)'s property is quite exotic. Unlike other light scalars, it does not behave like a (q) over tildeq state, and could be interpreted as a molecule. C1 [Dai, L. Y.; Shi, M.; Tang, G. Y.; Zheng, H. Q.] Peking Univ, Dept Phys, Beijing 100871, Peoples R China. [Dai, L. Y.; Shi, M.; Tang, G. Y.; Zheng, H. Q.] Peking Univ, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China. [Zheng, H. Q.] Collaborat Innovat Ctr Quantum Matter, Beijing, Peoples R China. RP Dai, LY (reprint author), Thomas Jefferson Natl Accelerator Facil, Ctr Theory, Newport News, VA 23606 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-4618-21-2 PY 2015 BP 22 EP 28 PG 7 WC Physics, Nuclear SC Physics GA BF3OW UT WOS:000380563300005 ER PT J AU Nebreda, J Londergan, JT Pelaez, JR Szczepaniak, AP AF Nebreda, J. Londergan, J. T. Pelaez, J. R. Szczepaniak, A. P. BE Geng, LS Meng, J Zhao, Q Zou, BS TI Regge trajectory of the f(0)(500) resonance from a dispersive connection to its pole SO Chiral Symmetry in Hadrons and Nuclei LA English DT Proceedings Paper CT International Workshop on Chiral Symmetry in Hadrons and Nuclei CT 7th International Symposium on Chiral Symmetry in Hadrons and Nuclei (Chiral 2013) CY JUN 21-24, 2010 CY OCT 27-30, 2013 CL Valencia, SPAIN CL Beihang University, Beijing, PEOPLES R CHINA SP Minist Ciencia Innovac, Ctr Nacl Fisica Particulas, Astroparticulas Fisica Nucl, Consejo Superior Investigaciones Cientificas, Inst Fis Teor, Univ Valencia HO Beihang University DE Regge theory; light scalar mesons ID SCATTERING AB We report here our results on how to obtain the Regge trajectory of a resonance from its pole in a scattering process by imposing analytic constraints in the complex angular momentum plane. The method, suited for resonances that dominate an elastic scattering amplitude, has been applied to the rho(770) and the f(0)(500) resonances. Whereas for the former we obtain a linear Regge trajectory, characteristic of ordinary quark-antiquark states, for the latter we find a non-linear trajectory with a much smaller slope at the resonance mass. This provides a strong indication of the non-ordinary nature of the sigma meson. C1 [Nebreda, J.] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan. [Nebreda, J.; Londergan, J. T.; Szczepaniak, A. P.] Indiana Univ, CEEM, Bloomington, IN 47403 USA. [Nebreda, J.; Londergan, J. T.; Szczepaniak, A. P.] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA. [Nebreda, J.; Pelaez, J. R.] Univ Complutense Madrid, Dept Fis Teor 2, E-28040 Madrid, Spain. [Szczepaniak, A. P.] Jefferson Lab, Newport News, VA 23606 USA. RP Nebreda, J (reprint author), Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 6068502, Japan. EM jnebreda@yukawa.kyoto-u.ac.jp NR 10 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-4618-21-2 PY 2015 BP 137 EP 140 PG 4 WC Physics, Nuclear SC Physics GA BF3OW UT WOS:000380563300026 ER PT J AU Bochev, PB Moe, SA Peterson, KJ Ridzal, D AF Bochev, Pavel B. Moe, Scott A. Peterson, Kara J. Ridzal, Denis BE Schrefler, B Onate, E Papadrakakis, M TI A CONSERVATIVE, OPTIMIZATION-BASED SEMI-LAGRANGIAN SPECTRAL ELEMENT METHOD FOR PASSIVE TRACER TRANSPORT SO Coupled Problems in Science and Engineering VI LA English DT Proceedings Paper CT 6th International Conference on Computational Methods for Coupled Problems in Science and Engineering (COUPLED PROBLEMS) CY MAY 18-20, 2015 CL Venice, ITALY SP Univ Padova, Dept Civil Environm & Architectural Engn, Tech Univ Catalonia, Int Centre Numerical Methods Engn, Natl Tech Univ Athens DE High order methods; transport; semi-Lagrangian methods; optimization ID EQUATIONS; REMAP AB We present a new optimization-based, conservative, and quasi-monotone method for passive tracer transport. The scheme combines high-order spectral element discretization in space with semi-Lagrangian time stepping. Solution of a singly linearly constrained quadratic program with simple bounds enforces conservation and physically motivated solution bounds. The scheme can handle efficiently a large number of passive tracers because the semi-Lagrangian time stepping only needs to evolve the grid points where the primitive variables are stored and allows for larger time steps than a conventional explicit spectral element method. Numerical examples show that the use of optimization to enforce physical properties does not affect significantly the spectral accuracy for smooth solutions. Performance studies reveal the benefits of high-order approximations, including for discontinuous solutions. C1 [Bochev, Pavel B.; Peterson, Kara J.] Sandia Natl Labs, Computat Math, Mail Stop 1320, Albuquerque, NM 87185 USA. [Ridzal, Denis] Sandia Natl Labs, Optimizat & Uncertainty Quantificat, Albuquerque, NM 87185 USA. [Moe, Scott A.] Univ Washington, Dept Appl Math, Seattle, WA 98195 USA. RP Bochev, PB (reprint author), Sandia Natl Labs, Computat Math, Mail Stop 1320, Albuquerque, NM 87185 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU INT CENTER NUMERICAL METHODS ENGINEERING PI 08034 BARCELONA PA GRAN CAPITAN, S-N, CAMPUS NORTE UPC, MODULO C1, 08034 BARCELONA, SPAIN BN 978-84-943928-3-2 PY 2015 BP 23 EP 34 PG 12 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA BF3WZ UT WOS:000380588500001 ER PT J AU Garzon, M Gray, LJ Sethian, JA AF Garzon, M. Gray, L. J. Sethian, J. A. BE Schrefler, B Onate, E Papadrakakis, M TI DROP COALESCENCE SIMULATIONS USING LEVEL SETS COUPLED WITH BOUNDARY INTEGRAL METHODS SO Coupled Problems in Science and Engineering VI LA English DT Proceedings Paper CT 6th International Conference on Computational Methods for Coupled Problems in Science and Engineering (COUPLED PROBLEMS) CY MAY 18-20, 2015 CL Venice, ITALY SP Univ Padova, Dept Civil Environm & Architectural Engn, Tech Univ Catalonia, Int Centre Numerical Methods Engn, Natl Tech Univ Athens DE Level Set Method; Boundary Integral method; Potential Flow; Drop Coalescence AB The study of singularities in free surface flows remains a subject of considerably interest. Regarding droplet dynamics the pinch-off events and merging of droplets have been extensively studied due its enormous interest in industrial applications. The level set techniques allows to embed the partial differential equations posed on a free boundary into one higher dimension equations posed on a fixed domain, in such a way that the classical potential flow model can be re-formulated in a complete Eulerian frame work, with the advantage that free boundary topological changes are automatically included. The Laplace equation for the velocity potential is solved via its integral formulation and a boundary element approximation, whereas the evolution of the level set function and extended velocity potential function is approximated using first order finite differences schemes. Merging and splitting events are therefore computationally possible. In the case of two equal drops coalescing, initial instants are very difficult to compute and also to see experimentally. After initial contact a liquid bridge connecting the two drops grows on time and a capillary wave, generated at the point of contact, propagates towards the drop end points. Numerical results regarding two droplet coalescence are presented and a detail discussion of the main flow characteristics is addressed. Comparison with previous computations and laboratory experiments will be also included. C1 [Garzon, M.] Univ Oviedo, Dept Appl Math, Calvo Sotelo S-N, Oviedo 33007, Spain. [Gray, L. J.] Bergen Software Serv Int, N-5852 Bergen, Norway. [Sethian, J. A.] Univ Calif Berkeley, Dept Math, Berkeley, CA USA. [Sethian, J. A.] Lawrence Berkeley Natl Lab, Dept Math, Berkeley, CA USA. RP Garzon, M (reprint author), Univ Oviedo, Dept Appl Math, Calvo Sotelo S-N, Oviedo 33007, Spain. EM maria.garzon.martin@gmail.com; len@bssi-tt.com; sethian@math.berkekey.edu NR 11 TC 0 Z9 0 U1 1 U2 1 PU INT CENTER NUMERICAL METHODS ENGINEERING PI 08034 BARCELONA PA GRAN CAPITAN, S-N, CAMPUS NORTE UPC, MODULO C1, 08034 BARCELONA, SPAIN BN 978-84-943928-3-2 PY 2015 BP 689 EP 700 PG 12 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA BF3WZ UT WOS:000380588500061 ER PT S AU Somov, SV Tolstukhin, IA Somov, AS AF Somov, S. V. Tolstukhin, I. A. Somov, A. S. BE Arkhangelskaja, IV Buzhan, PZ TI Application of the silicon photomultipliers for detectors in the GlueX experiment SO FUNDAMENTAL RESEARCH IN PARTICLE PHYSICS AND COSMOPHYSICS SE Physics Procedia LA English DT Proceedings Paper CT Fundamental Research in Particle Physics and Cosmophysics CY FEB 18-20, 2015 CL Moscow, RUSSIA SP Nat Res Nuclear Univ MEPhI DE Detectors; Silicon Photomultipliers; GlueX experiment AB The GlueX detector in Hall D at efferson Lab His instrumented with about 5000 Silicon Photomultipliers (SiPM) manufactured by Hamamatsu Corporation [2]. These photo sensors have properties similar to conventional photomultipliers but can be operated at high magnetic fields. Silicon photomultipliers with a sensitive area of 3x3 mm(2) are used to detect light from the following GlueX scintillator detectors: the tagger microscope, pair spectrometer, and start counter. Arrays of 4x4 SiPMs sensors were chosen for the instrumentation of the barrel electromagnetic calorimeter. The tagger microscope must operate at high rates (up to 2.5 MHz) and provide time measurements with a resolution better than 0.3 ns. The paper will describe some results of the characterization of SiPMs for various GlueX sub-detectors. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Somov, S. V.; Tolstukhin, I. A.] Natl Res Nucl Univ, MEPhI, Kashirskoe Shosse 31, Moscow 115409, Russia. [Somov, A. S.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Tolstukhin, IA (reprint author), Natl Res Nucl Univ, MEPhI, Kashirskoe Shosse 31, Moscow 115409, Russia. EM ivantol@jlab.org NR 1 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 74 BP 74 EP 80 DI 10.1016/j.phpro.2015.09.216 PG 7 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA BF2SC UT WOS:000380494900014 ER PT S AU Berdnikov, VV Somov, SV Pentchev, L Zihlmann, B AF Berdnikov, V. V. Somov, S. V. Pentchev, L. Zihlmann, B. BE Arkhangelskaja, IV Buzhan, PZ TI The drift chamber for the experiment to study the nature of the confinement SO FUNDAMENTAL RESEARCH IN PARTICLE PHYSICS AND COSMOPHYSICS SE Physics Procedia LA English DT Proceedings Paper CT Fundamental Research in Particle Physics and Cosmophysics CY FEB 18-20, 2015 CL Moscow, RUSSIA SP Nat Res Nuclear Univ MEPhI DE Detectors; GlueX experiment; Confinement; Drift chambers; Cathode readout AB The GlueX experiment was designed to search for hybrid mesons with exotic quantum numbers using a beam of linearly polarized photons incident on a liquid hydrogen target. The spectrum of these states and their mass splitting from normal mesons may yield information on confinement. The description of the GlueX spectrometer and Forward Drift Chambers (FDC) as a part of track reconstruction system is presented in the text. FDC's are multiwire chambers with cathode and anode read-out. The system allows reconstructing tracks of charged particles with similar to 200mkm accuracy with angles from 20 degrees up to 1 degrees. One of the detector features is 1.64% X-0 material amount in the active area. The cathode gain calibration procedure is presented. The results of such calibration using cosmic data and beam data are presented as well. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Berdnikov, V. V.; Somov, S. V.] Natl Res Nucl Univ, MEPhI, Kashirskoe Shosse 31, Moscow 115409, Russia. [Pentchev, L.; Zihlmann, B.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Berdnikov, VV (reprint author), Natl Res Nucl Univ, MEPhI, Kashirskoe Shosse 31, Moscow 115409, Russia. EM berdnik@jlab.org NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 74 BP 81 EP 85 DI 10.1016/j.phpro.2015.09.218 PG 5 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA BF2SC UT WOS:000380494900015 ER PT S AU Somov, SV Berdnikov, VV Tolstukhin, IA Somov, AS AF Somov, S. V. Berdnikov, V. V. Tolstukhin, I. A. Somov, A. S. BE Arkhangelskaja, IV Buzhan, PZ TI Study of the nature of the confinement in the GlueX experiment SO FUNDAMENTAL RESEARCH IN PARTICLE PHYSICS AND COSMOPHYSICS SE Physics Procedia LA English DT Proceedings Paper CT Fundamental Research in Particle Physics and Cosmophysics CY FEB 18-20, 2015 CL Moscow, RUSSIA SP Nat Res Nuclear Univ MEPhI DE Detectors; Nuclear physics; GlueX experiment; Hybrid mesons; Confinement AB Confinement is a fundamental property of quantum chromodynamics (QCD) associated with the unique role of the gluonic field responsible for binding quarks in hadrons. Understanding the role of gluons in the confinement of quarks is one of the most tantalizing topics in modern particle physics to be explored. The new experiment GlueX has been recently constructed at Jefferson Lab [1]. The experiment was designed to search for hybrid mesons with exotic quantum numbers using a beam of linearly polarized photons incident on a liquid hydrogen target. The spectrum of these states and their mass splitting from normal mesons may yield information on confinement. In addition, these observations in combination with detailed chromodynamics calculations such as on the Lattice can provide important tests for our understanding of the role of gluons. The production of exotic mesons is expected to be enhanced in gamma p interactions, where the experimental data is very limited. We present the description of the GlueX detector, beam line, and first results of the commissioning with photon beam. (C) 2015 The Authors, Published by Elsevier B.V. C1 [Somov, S. V.; Berdnikov, V. V.; Tolstukhin, I. A.] Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Kashirskoe Shosse 31, Moscow 115409, Russia. [Somov, A. S.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. RP Tolstukhin, IA (reprint author), Natl Res Nucl Univ MEPhI, Moscow Engn Phys Inst, Kashirskoe Shosse 31, Moscow 115409, Russia. EM ivantol@jlab.org NR 8 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 74 BP 86 EP 91 DI 10.1016/j.phpro.2015.09.222 PG 6 WC Astronomy & Astrophysics; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA BF2SC UT WOS:000380494900016 ER PT B AU Fu, P Tong, Z Dafalias, YF AF Fu, P. Tong, Z. Dafalias, Y. F. BE Soga, K Kumar, K Biscontin, G Kuo, M TI Anisotropic Coulomb failure criterion: From DEM to experiments SO Geomechanics from Micro to Macro, Vols I and II LA English DT Proceedings Paper CT 3rd International Symposium on Geomechanics from Micro to Macro CY SEP 01-03, 2014 CL Univ Cambridge, Cambridge, ENGLAND SP Int Soc Soil Mech & Geotechn Engn, Geo Mech Micro Macro Tech Comm 105 HO Univ Cambridge ID GRANULAR-MATERIALS; STRENGTH AB Sand deposited under gravity possesses significant inherent fabric anisotropy and thereby direction-dependent strength. Sand's shear strength anisotropy has been traditionally characterized by anisotropic Mohr-Coulomb criterion with friction angle depending on the angle between the bedding plane and principal stress direction. We argue, instead, that the generalization of an isotropic strength criterion to an anisotropic form should be based on the original Coulomb criterion, and the geometrical descriptor should be the angle psi(b) between the bedding plane and the failure plane. We employ a two-pillar approach to validate this argument. First, we use microstructure-conscious Discrete Element Method (DEM) simulation to create a master specimen of elongated virtual particles with natural fabric as a result of simulated gravity deposition. Direct shear and biaxial compression tests are simulated on virtual specimens "cut" out at various angles from the master specimen. Shear strength as a function of psi(b) over its full range between 0 degrees and 180 degrees was revealed, for the first time, to be not symmetrical in regards to psi(b) = 90, and the new relationship successfully predicts the emerging of of two types of failure planes that had been observed in biaxial compression tests but could not be explained by the anisotropic Mohr-Coulomb criterion. Second, we subsequently performed full-blown direct shear laboratory tests on three materials with distinct particle characteristics. Apart from uncovering a rich set of material behaviors related to strength anisotropy, in particular for the untested range of psi(b) from 90 degrees to 180 degrees, the laboratory test results' high resemblance to DEM simulation results demonstrates the great power of micro-scale simulation in the study of complex and unknown material responses. This demonstration is especially intriguing because here the DEM prediction of the psi(b)-strength curve shape was made and published before any laboratory results on real materials were available. C1 [Fu, P.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Tong, Z.] Beihang Univ, Beijing 100191, Peoples R China. [Dafalias, Y. F.] Univ Calif Davis, Davis, CA 95616 USA. [Dafalias, Y. F.] Natl Tech Univ Athens, GR-10682 Athens, Greece. RP Fu, P (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 9 TC 0 Z9 0 U1 2 U2 2 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-315-73732-4; 978-1-138-02707-7 PY 2015 BP 123 EP 128 PG 6 WC Engineering, Geological; Geosciences, Multidisciplinary SC Engineering; Geology GA BF3DF UT WOS:000380529100017 ER PT B AU Theocharis, A Vairaktaris, E Fu, P Dafalias, YF AF Theocharis, A. Vairaktaris, E. Fu, P. Dafalias, Y. F. BE Soga, K Kumar, K Biscontin, G Kuo, M TI Comparison of fabric tensors for granular materials SO Geomechanics from Micro to Macro, Vols I and II LA English DT Proceedings Paper CT 3rd International Symposium on Geomechanics from Micro to Macro CY SEP 01-03, 2014 CL Univ Cambridge, Cambridge, ENGLAND SP Int Soc Soil Mech & Geotechn Engn, Geo Mech Micro Macro Tech Comm 105 HO Univ Cambridge ID ANISOTROPY; MODEL AB Fabric tensors can be constructed based on different microstructural entities such as particle long axis orientations, inter-particle contact normal directions, and orientations of void shapes. Contact normal directions have the disadvantage of more difficult experimental determination than void vectors, due to difficulties associated with accurate measurement of tangent contact planes. In this study a comparison will be made between fabric tensors obtained by identifying the unit vector along the directions of: (a) contact normal and (b) void vectors obtained by a method based on the parallel scan-line approach of Ghedia & O'Sullivan (2012). For all cases two-dimensional Discrete Element Methodis used to construct the fabric tensors and follow their evolution during deformation. Particular emphasis is placed on the acquired norm and direction values in the critical state, and their relation to a macroscopic Anisotropic Critical State Theory recently proposed by Li & Dafalias (2012). C1 [Theocharis, A.; Vairaktaris, E.; Dafalias, Y. F.] NTUA, Athens, Attica, Greece. [Fu, P.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Dafalias, Y. F.] Univ Calif Davis, Davis, CA 95616 USA. RP Theocharis, A (reprint author), NTUA, Athens, Attica, Greece. NR 15 TC 0 Z9 0 U1 1 U2 1 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-315-73732-4; 978-1-138-02707-7 PY 2015 BP 153 EP 158 PG 6 WC Engineering, Geological; Geosciences, Multidisciplinary SC Engineering; Geology GA BF3DF UT WOS:000380529100022 ER PT J AU Power, JG Gai, W AF Power, J. G. Gai, W. BE Gai, W TI A Compact Wakefield Measurement Facility SO High Gradient Accelerating Structure LA English DT Proceedings Paper CT High Gradient Accelerating Structure CY MAY 19-19, 2013 CL Tsinghua Univ, Beijing, PEOPLES R CHINA HO Tsinghua Univ AB The conceptual design of a compact, photoinjector-based, facility for high precision measurements of wakefields is presented. This work is motivated by the need for a thorough understanding of beam induced wakefield effects for any future linear collider. We propose to use a high brightness photoinjector to generate (approximately) a 2 nC, 2 mm-mrad drive beam at 20 MeV to excite wakefields and a second photoinjector to generate a 5 MeV, variably delayed, trailing witness beam to probe both the longitudinal and transverse wakefields in the structure under test. Initial estimates show that we can detect a minimum measurable dipole transverse wake function of 0.1 V/pC/m/ mm and a minimum measurable monopole longitudinal wake function of 2.5 V/pC/m. Simulations results for the high brightness photoinjector, calculations of the facility's wakefield measurement resolution, and the facility layout are presented. C1 [Power, J. G.; Gai, W.] ANL, Argonne, IL 60439 USA. RP Power, JG (reprint author), ANL, Argonne, IL 60439 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-4602-09-9 PY 2015 BP 69 EP 75 PG 7 WC Physics, Atomic, Molecular & Chemical; Physics, Particles & Fields SC Physics GA BF3DC UT WOS:000380528800005 ER PT J AU Li, ZH AF Li, Zenghai BE Gai, W TI Simulation Code Development and Its Applications SO High Gradient Accelerating Structure LA English DT Proceedings Paper CT High Gradient Accelerating Structure CY MAY 19-19, 2013 CL Tsinghua Univ, Beijing, PEOPLES R CHINA HO Tsinghua Univ AB Under the support of the U.S. DOE SciDAC program, SLAC has been developing a suite of 3D parallel finite-element codes aimed at high-accuracy, high-fidelity electromagnetic and beam physics simulations for the design and optimization of next-generation particle accelerators. Running on the latest supercomputers, these codes have made great strides in advancing the state of the art in applied math and computer science at the petascale that enable the integrated modeling of electromagnetics, self-consistent Particle-In-Cell (PIC) particle dynamics as well as thermal, mechanical, and multi-physics effects. This paper will present the latest development and application of ACE3P to a wide range of accelerator projects. C1 [Li, Zenghai] SLAC, Menlo Pk, CA 94025 USA. RP Li, ZH (reprint author), SLAC, Menlo Pk, CA 94025 USA. NR 15 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-4602-09-9 PY 2015 BP 77 EP 94 PG 18 WC Physics, Atomic, Molecular & Chemical; Physics, Particles & Fields SC Physics GA BF3DC UT WOS:000380528800006 ER PT J AU Bolt, MD AF Bolt, M. D. BE Yang, C Clarke, K Yuan, M Yu, M Li, M Guan, W Sun, M Huang, B TI Visualizing Water Quality Sampling-Events in Florida SO ISPRS International Workshop on Spatiotemporal Computing LA English DT Proceedings Paper CT ISPRS International Workshop on Spatiotemporal Computing CY JUL 13-15, 2015 CL Fairfax, VA DE Water Quality; Visualization; Florida; R; GIS; Spatiotemporal; Communication AB Water quality sampling in Florida is acknowledged to be spatially and temporally variable. The rotational monitoring program that was created to capture data within the state's thousands of miles of coastline and streams, and millions of acres of lakes, reservoirs, and ponds may be partly responsible for inducing the variability as an artifact. Florida's new dissolved-oxygen-standard methodology will require more data to calculate a percent saturation. This additional data requirement's impact can be seen when the new methodology is applied retrospectively to the historical collection. To understand how, where, and when the methodological change could alter the environmental quality narrative of state waters requires addressing induced bias from prior sampling events and behaviors. Here stream and coastal water quality data is explored through several modalities to maximize understanding and communication of the spatiotemporal relationships. Previous methodology and expected-retrospective calculations outside the regulatory framework are found to be significantly different, but dependent on the spatiotemporal perspective. Data visualization is leveraged to demonstrate these differences, their potential impacts on environmental narratives, and to direct further review and analysis. C1 [Bolt, M. D.] US EPA, Oak Ridge Inst Sci & Educ, Sam Nunn Atlanta Fed Ctr, 61 Forsyth St SW, Atlanta, GA 30303 USA. RP Bolt, MD (reprint author), US EPA, Oak Ridge Inst Sci & Educ, Sam Nunn Atlanta Fed Ctr, 61 Forsyth St SW, Atlanta, GA 30303 USA. EM bolt.matthew@epa.gov NR 8 TC 0 Z9 0 U1 1 U2 1 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLE 1E, GOTTINGEN, 37081, GERMANY PY 2015 BP 73 EP 78 DI 10.5194/isprsannals-II-4-W2-73-2015 PG 6 WC Computer Science, Interdisciplinary Applications; Geography, Physical; Remote Sensing; Imaging Science & Photographic Technology SC Computer Science; Physical Geography; Remote Sensing; Imaging Science & Photographic Technology GA BF3IZ UT WOS:000380547600031 ER PT J AU Stewart, R Piburn, J Sorokine, A Myers, A Moehl, J White, D AF Stewart, Robert Piburn, Jesse Sorokine, Alex Myers, Aaron Moehl, Jessica White, Devin BE Yang, C Clarke, K Yuan, M Yu, M Li, M Guan, W Sun, M Huang, B TI WORLD SPATIOTEMPORAL ANALYTICS AND MAPPING PROJECT ( WSTAMP): DISCOVERING, EXPLORING, AND MAPPING SPATIOTEMPORAL PATTERNS ACROSS THE WORLD'S LARGEST OPEN SORUCE DATA SETS SO ISPRS International Workshop on Spatiotemporal Computing LA English DT Proceedings Paper CT ISPRS International Workshop on Spatiotemporal Computing CY JUL 13-15, 2015 CL Fairfax, VA DE Global; Data Mining; Spatiotemporal; Visualization; Tool; Analytics AB The application of spatiotemporal ( ST) analytics to integrated data from major sources such as the World Bank, United Nations, and dozens of others holds tremendous potential for shedding new light on the evolution of cultural, health, economic, and geopolitical landscapes on a global level. Realizing this potential first requires an ST data model that addresses challenges in properly merging data from multiple authors, with evolving ontological perspectives, semantical differences, and changing attributes, as well as content that is textual, numeric, categorical, and hierarchical. Equally challenging is the development of analytical and visualization approaches that provide a serious exploration of this integrated data while remaining accessible to practitioners with varied backgrounds. The WSTAMP project at Oak Ridge National Laboratory has yielded two major results in addressing these challenges: 1) development of the WSTAMP database, a significant advance in ST data modeling that integrates 10,000+ attributes covering over 200 nation states spanning over 50 years from over 30 major sources and 2) a novel online ST exploratory and analysis tool providing an array of modern statistical and visualization techniques for analyzing these data temporally, spatially, and spatiotemporally under a standard analytic workflow. We discuss the status of this work and report on major findings. C1 [Stewart, Robert; Sorokine, Alex; Myers, Aaron; White, Devin] Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. [Piburn, Jesse; Moehl, Jessica] Oak Ridge Associated Univ, Oak Ridge, TN 37831 USA. RP Stewart, R (reprint author), Oak Ridge Natl Lab, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM stewartrn@ornl.gov; piburnjo@ornl.gov; sorokina@ornl.gov; myersat@ornl.gov; moehljj@ornl.gov; whiteda1@ornl.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU COPERNICUS GESELLSCHAFT MBH PI GOTTINGEN PA BAHNHOFSALLE 1E, GOTTINGEN, 37081, GERMANY PY 2015 BP 95 EP 102 DI 10.5194/isprsannals-II-4-W2-95-2015 PG 8 WC Computer Science, Interdisciplinary Applications; Geography, Physical; Remote Sensing; Imaging Science & Photographic Technology SC Computer Science; Physical Geography; Remote Sensing; Imaging Science & Photographic Technology GA BF3IZ UT WOS:000380547600034 ER PT B AU Li, XS AF Li, Xiaoye Sherry BE Bai, Z Gao, W Su, Y TI Factorization-Based Sparse Solvers and Preconditioners SO Matrix Functions and Matrix Equations LA English DT Proceedings Paper CT 4th Gene Golub SIAM Summer School on Matrix Functions and Matrix Equations / 3rd International Summer School on Numerical Linear Algebra / 9th Shanghai Summer School on Analysis and Numerics in Modern Sciences CY JUL 22-AUG 02, 2013 CL Fudan Univ, Sch Math Sci, Shanghai, PEOPLES R CHINA SP SIAM, US Natl Sci Fdn, Chinese-French Inst Appl Math, Shanghai Ctr Math Sci, Natl Sci Fdn China HO Fudan Univ, Sch Math Sci ID APPROXIMATE MINIMUM DEGREE; DEGREE ORDERING ALGORITHM; UNSYMMETRIC LINEAR-SYSTEMS; NESTED DISSECTION; SYMBOLIC FACTORIZATION; GAUSSIAN-ELIMINATION; SEMISEPARABLE REPRESENTATIONS; MULTIFRONTAL METHOD; PARALLEL ALGORITHM; LU FACTORIZATION AB Efficient solution of large-scale, ill-conditioned and highly indefinite algebraic equations often relies on high quality preconditioners together with iterative solvers. Because of their robustness, factorization-based algorithms play a significant role in developing scalable solvers. We discuss the state-of-the-art, high performance sparse factorization techniques which are used to build sparse direct solvers, domain-decomposition type direct/iterative hybrid solvers, and approximate factorization preconditioners. In addition to algorithmic principles, we also address the key parallelism issues and practical aspects that need to be taken under consideration in order to deliver high speed and robustness to the users of today's sophisticated high performance computers. C1 [Li, Xiaoye Sherry] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Li, XS (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM xsli@lbl.gov NR 108 TC 0 Z9 0 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE BN 978-981-4675-77-2; 978-981-4675-76-5 PY 2015 BP 109 EP 137 PG 29 WC Mathematics SC Mathematics GA BF3YJ UT WOS:000380606200005 ER PT S AU Lei, H Karniadakis, GE AF Lei, Huan Karniadakis, George Em BE Quarteroni, A TI Multiscale Modeling of Sickle Cell Anemia SO MODELING THE HEART AND THE CIRCULATORY SYSTEM SE MS&A-Modeling Simulation and Applications LA English DT Proceedings Paper CT MPF2013 CY JUN 11-14, 2013 CL ITALY ID RED-BLOOD-CELLS; DISSIPATIVE PARTICLE DYNAMICS; HEMOGLOBIN POLYMERIZATION; HOMOGENEOUS NUCLEATION; VASCULAR ENDOTHELIUM; HEMODYNAMIC CHARACTERISTICS; HYDROXYUREA THERAPY; RHEOLOGIC BEHAVIOR; ADHESIVE DYNAMICS; SHEAR-FLOW AB Sickle cell anemia (SCA) is a genetic inherited hematological disorder mainly characterized by three biophysical hallmarks: heterogeneous cell morphology, abnormal rheology and vaso-occlusion crisis. The major challenge for numerical investigation of this disease is to model the dynamic processes over the wide range of length scales incorporated (sickle hemoglobin (HbS) polymerization to vaso-occlusion). In this chapter, we present a multi-scale computational framework of sickle red blood cell (SS-RBC), based on dissipative particle dynamics, to investigate the above three hallmarks. We first predict the heterogeneous SS-RBC morphological transition by coupling a RBC model with a stochastic coarse-grained model representing the intracellular HbS polymerization. We then quantify the abnormal rheology and hemodynamics of SS-RBC suspensions with a multi-scale SS-RBC model accounting for heterogeneous cell rigidity and the previously predicted cell morphologies. Finally, we employ the present model to quantify the mechanism of vaso-occlusion crisis associate with SCA. The heterogeneous cell adhesivity among the different cell groups and their specific contribution to occlusion crisis, as well as the role of inflammation-stimulated leukocyte are discussed. C1 [Lei, Huan] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Karniadakis, George Em] Brown Univ, Providence, RI 02912 USA. RP Karniadakis, GE (reprint author), Brown Univ, Providence, RI 02912 USA. EM huan.lei@pnnl.gov; George_Karniadakis@brown.edu NR 97 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG ITALIA PI MILAN PA MILAN, ITALY SN 2037-5255 BN 978-3-319-05230-4; 978-3-319-05229-8 J9 MS A MOD SIMUL PY 2015 VL 14 BP 119 EP 156 DI 10.1007/978-3-319-05230-4_5 PG 38 WC Mathematics, Applied; Mathematics, Interdisciplinary Applications SC Mathematics GA BF3JK UT WOS:000380548800005 ER PT B AU Hamilton, JH Luo, YX Ramayya, AV Hwang, JK Wang, EH Brewer, NT Doll, B Liu, SH Rasmussen, JO Lee, IY Frauendorf, S Ter-Akopian, GM Daniel, AV Oganessian, YT Zhu, SJ Shi, Y Xu, FR Batchelder, JC AF Hamilton, J. H. Luo, Y. X. Ramayya, A. V. Hwang, J. K. Wang, E. H. Brewer, N. T. Doll, B. Liu, S. H. Rasmussen, J. O. Lee, I. Y. Frauendorf, S. Ter-Akopian, G. M. Daniel, A. V. Oganessian, Y. T. Zhu, S. J. Shi, Y. Xu, F. R. Batchelder, J. C. BA Greiner, W BF Greiner, W TI New Insights into the Structure of Neutron-Rich Nuclei A=108-118 and Gd160-162 SO Nuclear Physics: Present and Future LA English DT Proceedings Paper CT International Symposium Nuclear Physics: Presence and Future CY MAY 29-JUN 05, 2013 CL Boppard am Rhein, GERMANY SP Frankfurt Inst Adv Studies (FIAS), Joint Inst Nucl Res (JINR) ID EXCITATION; STATES AB The level structures of Ru-108,Ru-110,Ru-112 (Z = 44) and Pd-112,Pd-114,Pd-115,Pd-116,Pd-117,Pd-118 (Z = 46) have been significantly expanded through studies of prompt gamma-gamma-gamma and gamma-gamma-gamma-gamma coincidences observed with Gammasphere following the spontaneous fission of Cf-252. Chiral doublet bands were observed in Ru-110,Ru-112. Softness to triaxiality perturbs the bands of Ru-108 and even-N Pd isotopes. In Ru-112, evidence for wobbling motion is found in the behavior of the gamma vibrational band. Similar evidence for wobbling motion is found in Pd-114, the N = 68 isotone of Ru-112. A transition from triaxial prolate to triaxial oblate was found in Pd112-116 with shape coexistent bands in Pd-115. New levels were observed in Gd-162,Gd-163. C1 [Hamilton, J. H.; Luo, Y. X.; Ramayya, A. V.; Hwang, J. K.; Wang, E. H.; Brewer, N. T.; Doll, B.; Liu, S. H.] Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. [Rasmussen, J. O.; Lee, I. Y.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Frauendorf, S.] Univ Notre Dame, Dept Phys, Notre Dame, IN 46556 USA. [Ter-Akopian, G. M.; Daniel, A. V.; Oganessian, Y. T.] Joint Inst Nucl Res, Dubna 141980, Russia. [Zhu, S. J.] Tsinghua Univ, Dept Phys, Beijing 10084, Peoples R China. [Shi, Y.; Xu, F. R.] Peking Univ, Dept Phys, Beijing 100871, Peoples R China. [Batchelder, J. C.] Oak Ridge Associated Univ, Oak Ridge, TN 37830 USA. RP Hamilton, JH (reprint author), Vanderbilt Univ, Dept Phys, Nashville, TN 37235 USA. EM j.h.hamilton@vanderbilt.edu NR 20 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-319-10199-6; 978-3-319-10198-9 PY 2015 BP 57 EP 67 DI 10.1007/978-3-319-10199-6_6 PG 11 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BF3GY UT WOS:000380542100006 ER PT B AU Howell, J Bauer, W Colbry, D Pickett, R Staber, A Sagert, I Strother, T AF Howell, Jim Bauer, Wolfgang Colbry, Dirk Pickett, Rodney Staber, Alec Sagert, Irina Strother, Terrance BA Greiner, W BF Greiner, W TI Parallelization of Kinetic Theory Simulations SO Nuclear Physics: Present and Future LA English DT Proceedings Paper CT International Symposium Nuclear Physics: Presence and Future CY MAY 29-JUN 05, 2013 CL Boppard am Rhein, GERMANY SP Frankfurt Inst Adv Studies (FIAS), Joint Inst Nucl Res (JINR) ID HEAVY-ION COLLISIONS; CORE-COLLAPSE SUPERNOVAE; MOLECULAR-DYNAMICS; NUCLEAR-EQUATION; HADRONIC MATTER; ISOSPIN PHYSICS; TRANSPORT; STATE; EVOLUTION; STARS AB Numerical studies of shock waves in large scale systems via kinetic simulations with millions of particles are too computationally demanding to be processed in serial. In this work we focus on optimizing the parallel performance of a kinetic Monte Carlo code for astrophysical simulations such as core-collapse supernovae. Our goal is to attain a flexible program that scales well with the architecture of modern supercomputers. This approach requires a hybrid model of programming that combines a message passing interface (MPI) with a multithreading model (OpenMP) in C++. We report on our approach to implement the hybrid design into the kinetic code and show first results which demonstrate a significant gain in performance when many processors are applied. C1 [Bauer, Wolfgang; Staber, Alec] Michigan State Univ, Dept Phys & Astron, E Lansing, MI 48824 USA. [Colbry, Dirk; Pickett, Rodney] Michigan State Univ, Inst Cyber Enabled Res, E Lansing, MI 48824 USA. [Howell, Jim] Michigan State Univ, Dept Comp Sci & Engn, E Lansing, MI 48824 USA. [Sagert, Irina] Indiana Univ, Ctr Explorat Energy & Matter, Bloomington, IN 47408 USA. [Strother, Terrance] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Howell, J (reprint author), Michigan State Univ, Dept Comp Sci & Engn, E Lansing, MI 48824 USA. EM howell20@msu.edu; bauer@pa.msu.edu; colbrydi@msu.edu; picke1@mail.lcc.edu; staberal@msu.edu; isagert@indiana.edu NR 40 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY BN 978-3-319-10199-6; 978-3-319-10198-9 PY 2015 BP 183 EP 192 DI 10.1007/978-3-319-10199-6_18 PG 10 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BF3GY UT WOS:000380542100018 ER PT J AU Candy, JV Walston, SE Chambers, DH AF Candy, J. V. Walston, S. E. Chambers, D. H. GP IEEE TI Sequential Detection of Fission Processes for Harbor Defense SO OCEANS 2015 - GENOVA LA English DT Proceedings Paper CT Oceans 2015 Genova CY MAY 18-21, 2015 CL Ctr Congressi Genova, Genova, ITALY SP MTS, IEEE, S&T Org CMRE, DLTM, ISME, Evo Log, Eco, Sea Technol, Planet, Springer, Ocean News & Technol, Reg Liguria, Comune Genova, Univ Genova HO Ctr Congressi Genova ID PROBABILITY RATIO TEST; SENSOR NETWORKS; TIME-INTERVALS; DISTRIBUTIONS AB With the large increase in terrorist activities throughout the world, the timely and accurate detection of special nuclear material (SNM) has become an extremely high priority for many countries concerned with national security. The detection of radionuclide contraband based on their gamma-ray emissions has been attacked vigorously with some interesting and feasible results; however, the fission process of SNM has not received as much attention due to its inherent complexity and required predictive nature. In this paper, on-line, sequential Bayesian detection and estimation (parameter) techniques to rapidly and reliably detect unknown fissioning sources with high statistical confidence are developed. C1 [Candy, J. V.; Walston, S. E.; Chambers, D. H.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Candy, JV (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 39 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8737-5 PY 2015 PG 10 WC Engineering, Marine; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA BF2OL UT WOS:000380485500010 ER PT J AU Candy, JV AF Candy, J. V. GP IEEE TI Broadband Particle Filtering in a Noisy Littoral Ocean SO OCEANS 2015 - GENOVA LA English DT Proceedings Paper CT Oceans 2015 Genova CY MAY 18-21, 2015 CL Ctr Congressi Genova, Genova, ITALY SP MTS, IEEE, S&T Org CMRE, DLTM, ISME, Evo Log, Eco, Sea Technol, Planet, Springer, Ocean News & Technol, Reg Liguria, Comune Genova, Univ Genova HO Ctr Congressi Genova DE littoral region; normal-modes; broadband Bayesian processor; sequential Monte Carlo; particle filter ID DOMAIN SIGNAL TRANSMISSION; SOURCE LOCALIZATION; TIME-DOMAIN; SOURCE LOCATION; WAVE-GUIDE AB When sound propagates in the shallow ocean, source characteristics complicate the analysis of received acoustic data considerably especially when they are broadband and spatially complex. Noise whether ambient, distant shipping, wind blown surface generated complicates this already chaotic environment even further primarily because these disturbances propagate through the same inherent oceanic medium. The broadband problem can be decomposed into a set of narrowband problems by decomposing the source spectrum into its set of narrowband lines. A generic Bayesian solution to the broadband pressure-field enhancement and modal function extraction problem is developed that leads to a so-called nonparametric estimate of the desired posterior distribution enabling statistical inference. C1 [Candy, J. V.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. RP Candy, JV (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. NR 24 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8737-5 PY 2015 PG 8 WC Engineering, Marine; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA BF2OL UT WOS:000380485500009 ER PT S AU Schlicher, BG Kulesz, JJ Abercrombie, RK Kruse, KL AF Schlicher, Bob G. Kulesz, James J. Abercrombie, Robert K. Kruse, Kara L. BE Salah, AA Tonta, Y Salah, AAA Sugimoto, C Al, U TI A Computing Environment to Support Repeatable Scientific Big Data Experimentation of World-Wide Scientific Literature SO PROCEEDINGS OF ISSI 2015 ISTANBUL: 15TH INTERNATIONAL SOCIETY OF SCIENTOMETRICS AND INFORMETRICS CONFERENCE SE Proceedings of the International Conference on Scientometrics and Informetrics LA English DT Proceedings Paper CT 15th International Conference of the International-Society-for-Scientometrics-and-Informetrics (ISSI) on Scientometrics and Informetrics CY JUN 29-JUL 04, 2015 CL Bogazici Univ, Istanbul, TURKEY SP Int Soc Scientometr & Informetr, Hacettepe Univ, Sci & Technol Res Council Turkey, Turkish Acad Network & Informat Ctr HO Bogazici Univ AB A principal tenet of the scientific method is that experiments must be repeatable. This tenet relies on ceteris paribus (i.e., all other things being equal). As a scientific community, involved in data sciences, we must investigate ways to establish an environment where experiments can be repeated. We can no longer allude to where the data comes from, we must add rigor to the data collection and management process from which our analysis is conducted. This paper describes a computing environment to support repeatable scientific big data experimentation of world-wide scientific literature, and recommends a system that is housed at the Oak Ridge National Laboratory in order to provide value to investigators from government agencies, academic institutions, and industry entities. The described computing environment also adheres to the recently instituted digital data management plan, which involves all stages of the digital data life cycle including capture, analysis, sharing, and preservation, as mandated by multiple United States government agencies. It particularly focuses on the sharing and preservation of digital research data. The details of this computing environment are explained within the context of cloud services by the three layer classification of "Software as a Service", "Platform as a Service", and "Infrastructure as a Service". C1 [Schlicher, Bob G.; Kulesz, James J.; Abercrombie, Robert K.; Kruse, Kara L.] Oak Ridge Natl Lab, Computat Sci & Engn Div, 1 Bethel Valley Rd, Oak Ridge, TN 37830 USA. RP Schlicher, BG (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, 1 Bethel Valley Rd, Oak Ridge, TN 37830 USA. EM schlicherbg@ornl.gov; jim.kulesz@gmail.com; abercrombier@ornl.gov; krusekl@ornl.gov NR 16 TC 0 Z9 0 U1 0 U2 0 PU INT SOC SCIENTOMETRICS & INFORMETRICS-ISSI PI LEUVEN PA KATHOLIEKE UNIV LEUVEN, FACULTEIT E T E W, DEKENSTRAAT 2, LEUVEN, B-3000, BELGIUM SN 2175-1935 BN 978-975-518-381-7 J9 PRO INT CONF SCI INF PY 2015 BP 514 EP 524 PG 11 WC Computer Science, Interdisciplinary Applications SC Computer Science GA BF2TX UT WOS:000380499700073 ER PT S AU Moore, DG Ober, CC Rodacy, PJ Nelson, CL AF Moore, David G. Ober, Curtis C. Rodacy, Phil J. Nelson, Ciji L. BE Declercq, NF TI Wave Speed Propagation Measurements on Highly Attenuative Heated Materials SO Proceedings of the 2015 ICU International Congress on Ultrasonics SE Physics Procedia LA English DT Proceedings Paper CT Proceedings of the 2015 ICU International Congress on Ultrasonics CY MAY 10-15, 2015 CL Georgia Tech Lorraine, Metz, FRANCE SP French Acoustical Soc HO Georgia Tech Lorraine DE Discontinuous-Galerkin; wave propagation; attenuative materials ID DISCONTINUOUS GALERKIN METHOD; MEDIA AB Ultrasonic wave propagation decreases as a material is heated. Two factors that can characterize material properties are changes in wave speed and energy loss from interactions within the media. Relatively small variations in velocity and attenuation can detect significant differences in microstructures. This paper discusses an overview of experimental techniques that document the changes within a highly attenuative material as it is either being heated or cooled from 25 degrees C to 90 degrees C. The experimental set-up utilizes ultrasonic probes in a through-transmission configuration. The waveforms are recorded and analyzed during thermal experiments. To complement the ultrasonic data, a Discontinuous-Galerkin Model (DGM) was also created which uses unstructured meshes and documents how waves travel in these anisotropic media. This numerical method solves particle motion travel using partial differential equations and outputs a wave trace per unit time. Both experimental and analytical data are compared and presented. C1 [Moore, David G.; Ober, Curtis C.; Rodacy, Phil J.; Nelson, Ciji L.] Sandia Natl Labs, Non Destruct Test Lab, POB 5800, Albuquerque, NM 87185 USA. RP Moore, DG (reprint author), Sandia Natl Labs, Non Destruct Test Lab, POB 5800, Albuquerque, NM 87185 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 70 BP 803 EP 806 DI 10.1016/j.phpro.2015.08.274 PG 4 WC Physics, Applied SC Physics GA BF3ER UT WOS:000380533000190 ER PT J AU Chen, HB Grider, G Inman, J Fields, P Kuehn, JA AF Chen, Hsing-bung Grider, Gary Inman, Jeff Fields, Parks Kuehn, Jeff Alan GP IEEE TI An Empirical Study of Performance, Power Consumption, and Energy Cost of Erasure Code Computing for HPC Cloud Storage Systems SO PROCEEDINGS OF THE 2015 IEEE INTERNATIONAL CONFERENCE ON NETWORKING, ARCHITECTURE AND STORAGE (NAS) LA English DT Proceedings Paper CT IEEE International Conference on Networking, Architecture and Storage (NAS 2015) CY AUG 06-07, 2015 CL Boston, MA SP IEEE, IEEE Comp Soc, IEEE Tech Comm Comp Architecture, IEEE Tech Comm Parallel Proc, IEEE Tech Comm Distributed Proc DE Erasure code; SIMD Vectorization; Power measurement; Energy cost; Power consumption; Cloud storage AB Erasure code storage systems are becoming popular choices for cloud storage systems due to cost-effective storage space saving schemes and higher fitult-resilience capabilities. Both erasure code encoding and decoding procedures are involving heavy array, matrix, and table-lookup compute intensive operations. Multi-core, many-core, and streaming SIMD extension are implemented in modern CPU designs. In this paper, we study the power consumption and energy efficiency of erasure code computing using traditional Intel x86 platform and Intel Streaming SIMD extension platform. We use a breakdown power consumption analysis approach and conduct power studies of erasure code encoding process on various storage devices. We present the impact of various storage devices on erasure code based storage systems in terms of processing time, power utilization, and energy cost. Finally we conclude our studies and demonstrate the Intel x86's Streaming SIMD extensions computing is a cost-effective and favorable choice for future power efficient HPC cloud storage systems. C1 [Chen, Hsing-bung; Grider, Gary; Inman, Jeff; Fields, Parks; Kuehn, Jeff Alan] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Chen, HB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM hbchen@lanl.gov NR 41 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7891-8 PY 2015 BP 71 EP 80 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems SC Computer Science GA BF2LA UT WOS:000380476900009 ER PT J AU Patton, S Samak, T Tull, CE Mackenzie, C AF Patton, Simon Samak, Taghrid Tull, Craig E. Mackenzie, Cindy BE Badonnel, R Xiao, J Ata, S De Turck, F Groza, V dos Santos, CRP TI Spade: Decentralized Orchestration of Data Movement and Warehousing for Physics Experiments SO PROCEEDINGS OF THE 2015 IFIP/IEEE INTERNATIONAL SYMPOSIUM ON INTEGRATED NETWORK MANAGEMENT (IM) LA English DT Proceedings Paper CT IFIP/IEEE International Symposium on Integrated Network Management (IM) CY MAY 11-15, 2015 CL Ottawa, CANADA SP IEEE, IEEE Commun Soc, IFIP AB The paper describes the implementation and experiences gathered from the Spade project which is a decentralized mechanism for data management that has been used in High Energy and Light Source physics experiments. The background and motivations that shaped the Spade project are covered, followed by an outline of the current design of the deployed application. The operational scenarios that have been developed from the use of Spade in a number of difference contexts are enumerated, after which there is a short discussion on how the implementation of the application has progressed. The paper finishes with some highlight of Spade's performance and a conclusion about what has been learnt from this project. C1 [Patton, Simon; Tull, Craig E.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Samak, Taghrid] Google Inc, Mountain View, CA USA. [Mackenzie, Cindy] Univ Wisconsin, Madison, WI USA. RP Patton, S (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-3-9018-8276-0 PY 2015 BP 1014 EP 1019 PG 6 WC Computer Science, Information Systems SC Computer Science GA BF2SM UT WOS:000380495900157 ER PT J AU Stephan, EG Chappell, A Sivaraman, C Purohit, S Smith, W Loscio, BF AF Stephan, Eric G. Chappell, Alan Sivaraman, Chitra Purohit, Sumit Smith, William Loscio, Bernadette Farias BE Smari, WW McQuay, W Nygard, M Natarian, J TI Deep Web Scientific Sensor Measurements Usage SO PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON COLLABORATION TECHNOLOGIES AND SYSTEMS LA English DT Proceedings Paper CT Proceedings of the 2015 International Conference on Collaboration Technologies and Systems CY JUN 01-05, 2015 CL Atlanta, GA SP Honeywell Int Inc, Knowledge Based Systems, Inc. (KBSI), Ball Aerospace and Technologies Corp, ClearFunnel, Inc, Intel Corp, LexisNexis Corp, Microsoft Res, PayPal, Inc., Springer Verlag DE IoT; WoT; Open Data; Semantic Web C1 [Stephan, Eric G.; Chappell, Alan; Sivaraman, Chitra; Purohit, Sumit; Smith, William] Pacific Northwest Natl Lab, Richland, WA 99354 USA. [Loscio, Bernadette Farias] Fed Univ Pernambuco UFPE, Ctr Informat, Recife, PE, Brazil. RP Stephan, EG (reprint author), Pacific Northwest Natl Lab, Richland, WA 99354 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7648-8 PY 2015 BP 1 EP 2 PG 2 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BF2HZ UT WOS:000380469300001 ER PT J AU Fink, GA Zarzhitsky, DV Carroll, TE Farquhar, ED AF Fink, Glenn A. Zarzhitsky, Dimitri V. Carroll, Thomas E. Farquhar, Ethan D. BE Smari, WW McQuay, W Nygard, M Natarian, J TI Security and Privacy Grand Challenges for the Internet of Things SO PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON COLLABORATION TECHNOLOGIES AND SYSTEMS LA English DT Proceedings Paper CT Proceedings of the 2015 International Conference on Collaboration Technologies and Systems CY JUN 01-05, 2015 CL Atlanta, GA SP Honeywell Int Inc, Knowledge Based Systems, Inc. (KBSI), Ball Aerospace and Technologies Corp, ClearFunnel, Inc, Intel Corp, LexisNexis Corp, Microsoft Res, PayPal, Inc., Springer Verlag DE Internet of Things; security; privacy; grand challenge; Internet; social impact of computing AB The growth of the Internet of Things (IoT) is driven by market pressures, and while security is being considered, the relationship between the unintended consequences of billions of such devices connecting to the Internet cannot be described with existing mathematical methods. The possibilities for unintended surveillance through lifestyle analysis, unauthorized access to information, and new attack vectors will continue to increase by 2020, when up to 50 billion devices may be connected. This paper discusses various kinds of vulnerabilities that can be expected to arise, and presents a research agenda for mitigating the worst of the impacts. We hope to draw research attention to the potential dangers of IoT so that many of these problems can be avoided. C1 [Fink, Glenn A.; Zarzhitsky, Dimitri V.; Carroll, Thomas E.; Farquhar, Ethan D.] Pacific Northwest Natl Lab, Natl Secur Directorate, Richland, WA 99352 USA. RP Fink, GA (reprint author), Pacific Northwest Natl Lab, Natl Secur Directorate, Richland, WA 99352 USA. OI Fink, Glenn/0000-0001-5731-6514 NR 35 TC 2 Z9 2 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7648-8 PY 2015 BP 27 EP 34 PG 8 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BF2HZ UT WOS:000380469300006 ER PT J AU Freedman, V Lansing, C Porter, E Schuchardt, K Guillen, Z Sivaramakrishnan, C Gorton, I AF Freedman, Vicky Lansing, Carina Porter, Ellen Schuchardt, Karen Guillen, Zoe Sivaramakrishnan, Chandrika Gorton, Ian BE Smari, WW McQuay, W Nygard, M Natarian, J TI A Collaborative Extensible User Environment for Simulation and Knowledge Management SO PROCEEDINGS OF THE 2015 INTERNATIONAL CONFERENCE ON COLLABORATION TECHNOLOGIES AND SYSTEMS LA English DT Proceedings Paper CT Proceedings of the 2015 International Conference on Collaboration Technologies and Systems CY JUN 01-05, 2015 CL Atlanta, GA SP Honeywell Int Inc, Knowledge Based Systems, Inc. (KBSI), Ball Aerospace and Technologies Corp, ClearFunnel, Inc, Intel Corp, LexisNexis Corp, Microsoft Res, PayPal, Inc., Springer Verlag DE simulation and modeling; knowledge management; collaborative science tools; extensible architecture ID WORKFLOW; SCIENCE AB In scientific simulation, scientists use measured data to create numerical models, execute simulations and analyze results from advanced simulators executing on high performance computing platforms. This process usually requires a team of scientists collaborating on data collection, model creation and analysis, and on authorship of publications and data. This paper shows that scientific teams can benefit from a user environment called Akuna that permits subsurface scientists in disparate locations to collaborate on numerical modeling and analysis projects. The Akuna application is built on the Velo software platform that provides a desktop client environment for conducting and analyzing simulations, a knowledge management server for project and data management, annotation, collaboration, job execution, and event-based communication, and a Tool Integration Framework for connecting any type of software application - from desktop tools to simulator codes into the Velo framework. Akuna is a customized Velo deployment that is tailored for subsurface modeling and is designed to support any type of simulator. Simulator extensibility is achieved by providing a customizable suite of desktop tools for simulator setup and execution that utilize Velo's Tool Integration Framework and are based on data-driven user interface generation. This paper describes the collaborative aspects of the Velo platform, how Velo was customized for Akuna, and Akuna's extensible "toolset" framework that creates a collaborative research environment for subsurface modelers. A use case example is provided, which demonstrates creating and executing a 3D subsurface simulation. C1 [Freedman, Vicky; Lansing, Carina; Porter, Ellen; Schuchardt, Karen; Guillen, Zoe; Sivaramakrishnan, Chandrika] Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. [Gorton, Ian] Carnegie Mellon Univ, Inst Software Engn, Pittsburgh, PA USA. RP Freedman, V (reprint author), Pacific NW Natl Lab, Fundamental & Computat Sci Directorate, Richland, WA 99352 USA. NR 18 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7648-8 PY 2015 BP 280 EP 286 PG 7 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BF2HZ UT WOS:000380469300049 ER PT J AU Het, K Yurek, S Camp, DW Wagoner, JL AF Het, K. Yurek, S. Camp, D. W. Wagoner, J. L. BE GulsunKilic, M Onel, O Basarir, H Karadeniz, M TorunBilgic, E TI An Assessment of Turkish Lignite Fields for Underground Coal Gasification SO Proceedings of the 24th International Mining Congress and Exhibition of Turkey, IMCET 2015 LA English DT Proceedings Paper CT 24th INTERNATIONAL MINING CONGRESS OF TURKEY CY APR 14-17, 2015 CL Antalya, TURKEY SP UCTEA Chamber Min Enigneers Turkey DE Lignite; gasification; UCG-ZEE; MAGE AB Underground Coal Gasification (UCG) is a way to convert in-situ coal into an energy-rich gas (synthesis gas). Like surface gasification, a combination of air, oxygen, and/or steam is reacted with the coal to produce a mixture of CH4, H-2, CO, CO2, H2O, and lesser amounts of H2S, NH3, and assorted organics. UCG eliminates mining, transporting, pulverizing, cleaning, and handling the coal and most of its ash residue by doing the gasification in the coal seam in situ. In this study, fourteen Turkish lignite fields were evaluated for their suitability to produce energy by UCG by Lawrence Livermore National Laboratory (LLNL) in the United States, together with Turkish Coal Enterprises (TKI) in Turkey. LLNL uses software during preliminary site assessments called UCG-ZEE (Underground Coal Gasification-Zonal Energy Estimator). This was one tool used to estimate the potential for UCG in coal fields in Turkey. By using the above-mentioned software, four important UCG parameters for each defined coal zone were calculated. These are: 1) the zone thickness, 2) the mass-average lower calorific value (CV) of the mixture of coal and rock layers within coal zone, 3) the maximum areal gas energy (MAGE) value for the zone, and 4) a figure of merit that combines CV and MAGE. C1 [Het, K.; Yurek, S.] Gen Directorate Turkish Coal Enterprises, Ankara, Turkey. [Camp, D. W.; Wagoner, J. L.] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Het, K (reprint author), Gen Directorate Turkish Coal Enterprises, Ankara, Turkey. NR 1 TC 0 Z9 0 U1 0 U2 0 PU TMMOB MADEN MUHENDISLERI ODASI PI ANKARA PA SELANIK CADDESI NO 19-4, KIZILAY, ANKARA, 00000, TURKEY BN 978-605-01-0705-0 PY 2015 BP 1078 EP 1086 PG 9 WC Engineering, Geological; Mining & Mineral Processing SC Engineering; Mining & Mineral Processing GA BF3MZ UT WOS:000380558200140 ER PT S AU Adler, J Adler, O Kreif, M Cohen, O Grosso, B Hashibon, A Cooper, VR AF Adler, Joan Adler, Omri Kreif, Meytal Cohen, Or Grosso, Bastien Hashibon, Adham Cooper, Valentino R. BE Landau, DP Schuttler, HB Lewis, S Bachmann, M TI Mini-review of Electron Density Visualization SO Proceedings of the 28th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2015) SE Physics Procedia LA English DT Proceedings Paper CT Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP) CY FEB 23-27, 2015 CL Univ Georgia, New Orleans, LA HO Univ Georgia DE Computational Physics; simulation; visualization ID NANODIAMOND AB We describe both educational and research oriented examples of electronic density visualization with AViz. Several detailed cases are presented and the procedures for their preparation are described. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Adler, Joan; Adler, Omri; Kreif, Meytal; Cohen, Or; Grosso, Bastien] Technion IIT, Dept Phys, IL-32000 Haifa, Israel. [Grosso, Bastien] Ecole Polytech Fed Lausanne, Lausanne, Switzerland. [Hashibon, Adham] Fraunhofer IWM, Freiburg, Germany. [Cooper, Valentino R.] Oak Ridge Natl Lab, Oak Ridge, TN 37839 USA. RP Adler, J (reprint author), Technion IIT, Dept Phys, IL-32000 Haifa, Israel. RI Cooper, Valentino /A-2070-2012 OI Cooper, Valentino /0000-0001-6714-4410 NR 9 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 68 BP 2 EP 6 DI 10.1016/j.phpro.2015.07.100 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA BF2ZX UT WOS:000380514400001 ER PT S AU Cooper, VR Donald, KJ AF Cooper, Valentino R. Donald, Kelling J. BE Landau, DP Schuttler, HB Lewis, S Bachmann, M TI First principles predictions of van der Waals bonded inorganic crystal structures: Test case, HgCl2 SO PROCEEDINGS OF THE 28TH WORKSHOP ON COMPUTER SIMULATION STUDIES IN CONDENSED MATTER PHYSICS (CSP2015) SE Physics Procedia LA English DT Proceedings Paper CT Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP) CY FEB 23-27, 2015 CL Univ Georgia, New Orleans, LA HO Univ Georgia DE vdW-DF; crystal structure prediction; van der Waals; London dispersion; density functional theory ID DENSITY-FUNCTIONAL THEORY; CHARGE-TRANSPORT; MOBILITY; POLYMORPHISM; TRANSISTORS; COMPLEXES; BR; CL AB We study the crystals structure and stability of four possible polymorphs of HgCl2 using first principles density functional theory. Mercury (II) halides are a unique class of materials which, depending on the halide species, form in a wide range of crystal structures, ranging from densely packed solids to layered materials and molecular solids. Predicting the groundstate structure of any member of this group from first principles, therefore, requires a general purpose functional that treats van der Waals bonding and covalent/ionic bonding adequately. Here, we demonstrate that the non-local van der Waals density functional paired with the C09 exchange functional meets this bar for HgCl2. In particular, this functional is able to predict the correct groundstate among the structures tested as well as having extremely good agreement with the experimentally known crystal structure. These results highlight the maturity of this functional and open the door to using this method for truly first principles crystal structure predictions. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Cooper, Valentino R.] Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37830 USA. [Donald, Kelling J.] Univ Richmond, Gottwald Ctr Sci, Dept Chem, Richmond, VA 23173 USA. RP Cooper, VR (reprint author), Oak Ridge Natl Lab, Div Mat Sci & Technol, Oak Ridge, TN 37830 USA. EM coopervr@ornl.gov RI Cooper, Valentino /A-2070-2012 OI Cooper, Valentino /0000-0001-6714-4410 NR 34 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 68 BP 25 EP 31 DI 10.1016/j.phpro.2015.07.104 PG 7 WC Physics, Applied; Physics, Condensed Matter SC Physics GA BF2ZX UT WOS:000380514400005 ER PT S AU Vogel, T Perez, D AF Vogel, Thomas Perez, Danny BE Landau, DP Schuttler, HB Lewis, S Bachmann, M TI Accelerating the convergence of replica exchange simulations using Gibbs sampling and adaptive temperature sets SO Proceedings of the 28th Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP2015) SE Physics Procedia LA English DT Proceedings Paper CT Workshop on Computer Simulation Studies in Condensed Matter Physics (CSP) CY FEB 23-27, 2015 CL Univ Georgia, New Orleans, LA HO Univ Georgia DE Replica exchange; Molecular dynamics; Gibbs sampling; Adaptive temperature set; Multicanonical; Microcanonical temperature ID PARALLEL TEMPERING SIMULATIONS; MULTICANONICAL ENSEMBLE; MOLECULAR-DYNAMICS; FREE-ENERGY; EFFICIENT AB We recently introduced a novel replica-exchange scheme in which an individual replica can sample from states encountered by other replicas at any previous time by way of a global configuration database, enabling the fast propagation of relevant states through the whole ensemble of replicas. This mechanism depends on the knowledge of global thermodynamic functions which are measured during the simulation and not coupled to the heat bath temperatures driving the individual simulations. Therefore, this setup also allows for a continuous adaptation of the temperature set. In this paper, we will review the new scheme and demonstrate its capability. The method is particularly useful for the fast and reliable estimation of the microcanonical temperature T(U) or, equivalently, of the density of states g(U) over a wide range of energies. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Vogel, Thomas; Perez, Danny] Los Alamos Natl Lab, Theoret Div T 1, Los Alamos, NM 87545 USA. RP Vogel, T (reprint author), Los Alamos Natl Lab, Theoret Div T 1, Los Alamos, NM 87545 USA. EM tvogel@lanl.gov; danny_perez@lanl.gov NR 19 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 68 BP 125 EP 129 DI 10.1016/j.phpro.2015.07.121 PG 5 WC Physics, Applied; Physics, Condensed Matter SC Physics GA BF2ZX UT WOS:000380514400022 ER PT J AU Alfonso, DR Tafen, D AF Alfonso, Dominic R. Tafen, De Nyago BE Poole, W Christensen, S Kalidindi, S Luo, A Madison, J Raabe, D Sun, X TI PREDICTIVE SIMULATION OF DIFFUSION IN Ni-BASED ALLOYS USING PAIR INTERACTION BASED KINETIC MONTE CARLO METHOD SO PROCEEDINGS OF THE 3RD WORLD CONGRESS ON INTEGRATED COMPUTATIONAL MATERIALS ENGINEERING (ICME) LA English DT Proceedings Paper CT Proceedings of the 3rd World Congress on Integrated Computational Materials Engineering CY MAY 31-JUN 04, 2015 CL Cheyenne Mountain Resort, Colorado Springs, CO SP TMS Minerals, Metals & Mat Soc HO Cheyenne Mountain Resort DE Transport Properties; Multi-scale Modeling; Density Functional Theory ID TOTAL-ENERGY CALCULATIONS AB Investigation of diffusion process in Ni-based alloy is a problem of high relevance in the area of understanding corrosion behavior. We explored the use of a combined approach consisting of density functional theory to compute migration barriers and Kinetic Monte Carlo method to evaluate hard to measure tracer diffusion coefficients. A major challenge in the implementation is the need to find one by one the rate constants for each diffusion process that can occur in the alloy. To overcome this, a pair interaction model was utilized to evaluate the influence of local environment on the kinetic parameters. Previous application of this approach yielded self-diffusion coefficients in pure Ni and the tracer diffusivity of dilute Al in the Ni host that are in good agreement with available experiments. The method was extended to examine oxygen diffusivity in pure Ni and the results show good agreement with values obtained using electrochemical and potentiometric techniques. The presence of Al was found to have a dragging effect on the mobility of oxygen. C1 [Alfonso, Dominic R.; Tafen, De Nyago] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. [Tafen, De Nyago] URS Corp, Albany, OR 97321 USA. RP Alfonso, DR (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA BN 978-1-119-13950-8 PY 2015 BP 107 EP 114 PG 8 WC Materials Science, Multidisciplinary SC Materials Science GA BF3GA UT WOS:000380538900005 ER PT B AU Khaleel, MA Koeppel, BJ Stephens, EV AF Khaleel, M. A. Koeppel, Brian J. Stephens, Elizabeth V. BE Karaman, I Arroyave, R Masad, E TI NUMERICAL MODELING OF CATHODE CONTACT MATERIAL DENSIFICATION SO Proceedings of the TMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015) LA English DT Proceedings Paper CT Proceedings of the TMS Middle East Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015) CY JAN 11-14, 2015 CL Doha, QATAR DE SOFC; Cathode; Densification; Modeling AB Numerical modeling was used to simulate the constrained sintering process of the cathode contact layer during assembly of solid oxide fuel cells ( SOFCs). A finite element model based on the continuum theory for sintering of porous bodies was developed and used to investigate candidate low-temperature cathode contact materials. Constitutive parameters for various contact materials under development were estimated from dilatometry screening tests, and the influence of processing time, processing temperature, initial grain size, and applied compressive stress on the free sintering response was predicted for selected candidate materials. The densification behavior and generated stresses within a 5-cell planar SOFC stack during sintering, high temperature operation, and room temperature shutdown were predicted. Insufficient constrained densification was observed in the stack at the proposed heat treatment, but beneficial effects of reduced grain size, compressive stack preload, and reduced thermal expansion coefficient on the contact layer densification and stresses were observed. C1 [Khaleel, M. A.] Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar. [Koeppel, Brian J.; Stephens, Elizabeth V.] Pacific Northwest Natl Lab, Richland, WA USA. RP Khaleel, MA (reprint author), Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar. OI khaleel, mohammad/0000-0001-7048-0749 NR 9 TC 0 Z9 0 U1 0 U2 0 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN STREET, MALDEN 02148, MA USA BN 978-1-119-09042-7; 978-1-119-06527-2 PY 2015 BP 295 EP 305 DI 10.1002/9781119090427.ch30 PG 11 WC Energy & Fuels; Engineering, Mechanical; Materials Science, Multidisciplinary SC Energy & Fuels; Engineering; Materials Science GA BF3QM UT WOS:000380568300030 ER PT B AU Khaleel, MA Stephens, EV Stevenson, J AF Khaleel, M. A. Stephens, E. V. Stevenson, J. BE Karaman, I Arroyave, R Masad, E TI INTERFACIAL STRESSES AND DEGRADATION OF OXIDE SCALE AND SUBSTRATE INTERFACE AT HIGH TEMPERATURE SO Proceedings of the TMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015) LA English DT Proceedings Paper CT Proceedings of the TMS Middle East Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015) CY JAN 11-14, 2015 CL Doha, QATAR DE SOFC; Interconnect; Durability ID ALLOY AB Interfacial analysis utilizing interfacial indentation methodology ( where micro/nano indentation is performed at the oxide scale/substrate interface to create and propagate cracks at the interface) was completed for the 14,000 and 20,000 hours, 800 degrees C surface modified specimens. The localized oxide thickness and crack lengths were measured after applying loads ranging from 0.2 to 1.8 N. Post-processing of the results to date indicate that the critical load for surface blasted (SB) surface modified specimens is greater than the equivalent surface grind ( SG) surface modified specimens which is indicative of a similar to 25% increase in interfacial strength in the SB specimens in comparisons to the SG specimens. However, more data is needed to further quantify the interfacial strength and to reduce any uncertainty due to the approach applied. C1 [Khaleel, M. A.] Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar. [Stephens, E. V.; Stevenson, J.] Pacific Northwest Natl Lab, Richland, WA 99164 USA. RP Khaleel, MA (reprint author), Qatar Fdn, Qatar Environm & Energy Res Inst, Doha, Qatar. OI khaleel, mohammad/0000-0001-7048-0749 NR 5 TC 0 Z9 0 U1 0 U2 1 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN STREET, MALDEN 02148, MA USA BN 978-1-119-09042-7; 978-1-119-06527-2 PY 2015 BP 351 EP 355 DI 10.1002/9781119090427.ch37 PG 5 WC Energy & Fuels; Engineering, Mechanical; Materials Science, Multidisciplinary SC Energy & Fuels; Engineering; Materials Science GA BF3QM UT WOS:000380568300037 ER PT B AU Sarikurt, S Sevik, C Kinaci, A Haskins, JB Cagin, T AF Sarikurt, Sevil Sevik, Cem Kinaci, Alper Haskins, Justin B. Cagin, Tahir BE Karaman, I Arroyave, R Masad, E TI Tailoring Thermal Conductivity of Ge/Si Core-Shell Nanowires SO Proceedings of the TMS Middle East - Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015) LA English DT Proceedings Paper CT Proceedings of the TMS Middle East Mediterranean Materials Congress on Energy and Infrastructure Systems (MEMA 2015) CY JAN 11-14, 2015 CL Doha, QATAR DE Ge/Si core-shell nanowires; thermal conductivity; thermoelectrics ID NANOSCALE ELECTRONIC DEVICES; SILICON NANOWIRES; TRANSPORT-COEFFICIENTS; MOLECULAR-DYNAMICS; CARBON NANOTUBES; HETEROSTRUCTURES AB Low-dimensional nanostructured materials show large variation in their thermal transport properties. Here, we investigate the influence of core-shell architecture on nanowire ( NW) thermal conductivity using molecular dynamics with Tersoff potentials Si-Ge, to design structures with desired thermal conductivity for thermoelectric device applications. To explore the parameter space, we have calculated thermal conductivity values of Ge/Si core-shell NWs having different lengths, cross-section sizes and Ge concentrations at several temperatures. We have found that ( 1) increasing the cross-sectional area of pure Si NW causes an increase in thermal conductivity ( 2) increasing the Ge core size in the Ge/Si structure results in a decrease in the thermal conductivity values at 300. ( 3) there is no significant variation in the thermal conductivity of Si NW for temperature values larger than 300. ( 4) the predicted thermal conductivity around 10 W m(-1)K(-1) is still larger than the value convenient for thermoelectric applications. C1 [Sarikurt, Sevil] Dokuz Eylul Univ, Dept Phys, Fac Sci, TR-35390 Izmir, Turkey. [Sevik, Cem] Anadolu Univ, Dept Mech Engn, Fac Engn, TR-26555 Eskisehir, Turkey. [Kinaci, Alper] Argonne Natl Lab, Argonne, IL 60439 USA. [Haskins, Justin B.; Cagin, Tahir] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Sarikurt, Sevil; Kinaci, Alper; Haskins, Justin B.; Cagin, Tahir] Texas A&M Univ, Dept Mat Sci & Engn, College Stn, TX 77843 USA. RP Sarikurt, S (reprint author), Dokuz Eylul Univ, Dept Phys, Fac Sci, TR-35390 Izmir, Turkey. NR 28 TC 0 Z9 0 U1 2 U2 2 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN STREET, MALDEN 02148, MA USA BN 978-1-119-09042-7; 978-1-119-06527-2 PY 2015 BP 433 EP 440 DI 10.1002/9781119090427.ch46 PG 8 WC Energy & Fuels; Engineering, Mechanical; Materials Science, Multidisciplinary SC Energy & Fuels; Engineering; Materials Science GA BF3QM UT WOS:000380568300046 ER PT S AU Poorsartep, M Stephens, T AF Poorsartep, Mohammad Stephens, Thomas BE Meyer, G Beiker, S TI Truck Automation Opportunities SO Road Vehicle Automation 2 SE Lecture Notes in Mobility LA English DT Proceedings Paper CT Automated Vehicle Symposium CY JUL 15-17, 2014 CL Burlingame, CA DE Heavy truck automation; Cooperative adaptive cruise control; Platoon; Advanced driver assistance systems; Electronic stability control AB This paper gives a summary of a recent session dedicated to truck automation opportunities held as part of the Transportation Research Board/Association for Unmanned Vehicle Systems International (TRB/AUVSI) 2014 Automated Vehicle Symposium. Improved safety, efficiency, and productivity, with lower environmental impacts, are all potential benefits of heavy truck automation. Near-term opportunities for more advanced automation technologies in trucks are platooning and low-speed maneuvering. Advanced technologies are being developed for more automated truck operation. This chapter presents the status and trends of truck automation technologies, technical challenges, barriers to deployment, and possible pathways to automation. C1 [Poorsartep, Mohammad] Texas A&M Transportat Inst, Connected Transportat Initiat, 2901 Baxter Rd, Ann Arbor, MI 48109 USA. [Stephens, Thomas] Argonne Natl Lab, Argonne, IL 60439 USA. RP Poorsartep, M (reprint author), Texas A&M Transportat Inst, Connected Transportat Initiat, 2901 Baxter Rd, Ann Arbor, MI 48109 USA. EM m-poorsartep@ttimail.tamu.edu; tstephens@anl.gov NR 8 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 2196-5544 BN 978-3-319-19078-5; 978-3-319-19077-8 J9 LECT N MOBIL PY 2015 BP 173 EP 185 DI 10.1007/978-3-319-19078-5_15 PG 13 WC Automation & Control Systems; Engineering, Electrical & Electronic; Transportation Science & Technology SC Automation & Control Systems; Engineering; Transportation GA BF4EP UT WOS:000380772300015 ER PT B AU Alfonsi, A Rabiti, C Mandelli, D Cogliati, J Kinoshita, R Naviglio, A AF Alfonsi, Andrea Rabiti, Cristian Mandelli, Diego Cogliati, Joshua Kinoshita, Robert Naviglio, Antonio BE Nowakowski, T Mlynczak, M JodejkoPietruczuk, A WerbinskaWojciechowska, S TI RAVEN and dynamic probabilistic risk assessment: Software overview SO Safety and Reliability: Methodology and Applications LA English DT Proceedings Paper CT PROCEEDINGS OF THE EUROPEAN SAFETY AND RELIABILITY CONFERENCE (ESREL) CY SEP 14-18, 2014 CL Wroclaw, POLAND SP Wroclaw Univ Technol, Polish Safety & Reliabil Assoc, European Safety & Reliabil Assoc AB Risk Analysis Virtual Environment (RAVEN) is a generic software framework to perform parametric and probabilistic analysis based on the response of complex system codes. The initial development was aimed at providing dynamic risk analysis capabilities to the Reactor Excursion and Leak Analysis Program v.7 (RELAP-7) Thermo-Hydraulic code, currently under development at the Idaho National Laboratory (INL). Although the initial goal has been fully accomplished, RAVEN is now a multi-purpose probabilistic and uncertainty quantification platform, capable to agnostically communicate with any system code. This agnosticism includes providing Application Programming Interfaces (APIs). These APIs are used to allow RAVEN to interact with any code as long as all the parameters that need to be perturbed are accessible through input files or via python interfaces. RAVEN is capable of investigating the system response as well as the input space using Monte Carlo, Grid, or Latin Hyper Cube sampling schemes, but its strength is focused toward system feature discovery, such as limit surfaces, separating regions of the input space leading to system failure, using dynamic supervised learning techniques. The paper presents an overview of the software capabilities and their implementation schemes followed by some application examples. C1 [Alfonsi, Andrea; Rabiti, Cristian; Mandelli, Diego; Cogliati, Joshua; Kinoshita, Robert] Idaho Natl Lab, Idaho Falls, ID 83402 USA. [Naviglio, Antonio] Univ Roma La Sapienza, Rome, Italy. RP Alfonsi, A (reprint author), Idaho Natl Lab, Idaho Falls, ID 83402 USA. OI Alfonsi, Andrea/0000-0003-2866-4346 NR 14 TC 0 Z9 0 U1 1 U2 1 PU CRC PRESS-TAYLOR & FRANCIS GROUP PI BOCA RATON PA 6000 BROKEN SOUND PARKWAY NW, STE 300, BOCA RATON, FL 33487-2742 USA BN 978-1-315-73697-6; 978-1-138-02681-0 PY 2015 BP 759 EP 766 PG 8 WC Engineering, Multidisciplinary; Transportation Science & Technology SC Engineering; Transportation GA BF3HL UT WOS:000380543400100 ER PT S AU Bossert, JA Guzman, C Haaker, AW Dumont, JH Gupta, G Mohite, A Miller, KA Mascarenas, DDL Cattaneo, A AF Bossert, Jason A. Guzman, Christian Haaker, Axel W. Dumont, Joseph H. Gupta, Gautam Mohite, Aditya Miller, Karen A. Mascarenas, David D. L. Cattaneo, Alessandro BE Niezrecki, C TI Prototyping and Testing of a Graphene-Oxide Tamper Evident Seal SO Structural Health Monitoring and Damage Detection, Vol 7 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT 33rd IMAC Conference and Exposition on Structural Dynamics CY FEB 02-05, 2015 CL Orlando, FL SP IMAC, Soc Expt Mech DE Tamper-evident seal; Crack-detection; Compressed sensing; Distributed sensors network; Graphene-oxide AB Structural Health Monitoring (SHM) technology has great unexplored potential in security applications. Specifically breakthroughs in graphene-oxide (GO) damage-detecting skins coupled with nonlinear, sparse signal processing techniques being used for SHM lend themselves to addressing the need for low-power remotely-readable tamper-evident seals. Assessing the integrity of a tamper-evident seal is inherently an SHM problem. In this case damage is caused by a human adversary, not the environment. This paper presents a novel architecture that leverages the tunable electrical properties of a GO-paper-based seal with a compressed-sensing (CS) acquisition protocol. This architecture allows the seal to characterize its integrity, while simultaneously providing an encrypted authentication feature making the seal difficult to counterfeit and/or spoof. The electrical properties of GO are sensitive to the traditional methods used to attack paper-based seals (mechanical lifting, solvents, heat/cold, steam). This property of GO allows us to determine if a seal has been tampered with simply by measuring its electrical properties. Specific areas of focus addressed by this work include the quantitative analysis of the encryption/authentication capabilities provided by CS, and methods for enhancing the detection of cracks/cuts propagating through the sensitive GO paper. C1 [Bossert, Jason A.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Guzman, Christian] Prairie View A&M Univ, Thermal Sci Res Ctr, Prairie View, TX 77446 USA. [Haaker, Axel W.] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA. [Dumont, Joseph H.; Gupta, Gautam; Mohite, Aditya] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. [Miller, Karen A.] Los Alamos Natl Lab, Safeguards Sci & Technol, Los Alamos, NM 87545 USA. [Mascarenas, David D. L.; Cattaneo, Alessandro] Los Alamos Natl Lab, Engn Inst, MS-T001,POB 1663, Los Alamos, NM 87545 USA. RP Cattaneo, A (reprint author), Los Alamos Natl Lab, Engn Inst, MS-T001,POB 1663, Los Alamos, NM 87545 USA. EM cattaneo@lanl.gov NR 17 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-15230-1; 978-3-319-15229-5 J9 C PROC SOC EXP MECH PY 2015 BP 37 EP 45 DI 10.1007/978-3-319-15230-1_5 PG 9 WC Engineering, Civil; Engineering, Mechanical SC Engineering GA BF3PN UT WOS:000380565500005 ER PT S AU Gannon, A Wheeler, E Brown, K Flynn, E Warren, W AF Gannon, Adam Wheeler, Elizabeth Brown, Kyle Flynn, Eric Warren, Will BE Niezrecki, C TI A High-Speed Dual-Stage Ultrasonic Guided Wave System for Localization and Characterization of Defects SO STRUCTURAL HEALTH MONITORING AND DAMAGE DETECTION, VOL 7 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT 33rd IMAC Conference and Exposition on Structural Dynamics CY FEB 02-05, 2015 CL Orlando, FL SP IMAC, Soc Expt Mech DE Structural health monitoring; Non-destructive testing; Ultrasonic guided waves; Laser Doppler vibrometer; Embedded transducers; Hybrid monitoring AB This paper presents a joint approach to the detection, localization and characterization of structural defects. Our technique, termed Dual-Stage Structural Health Monitoring (DSSHM), combines an online, embedded ultrasonic structural health monitoring system with acoustic wavenumber spectroscopy data gathered from a scanning laser Doppler vibrometer. The combined system provides non-disruptive monitoring and high measurement fidelity necessary to drive critical decisions. Stage 1 is performed in situ (while the structure is in operation): an array of embedded ultrasonic transducers is used to excite and measure ultrasonic wave pulses in order to detect and locate irregularities within the test structure. In Stage 2, a subset of the same transducer array produces a steady-state ultrasonic response in the immediate vicinity of each structural irregularity. A laser Doppler vibrometer is then introduced to measure the full field response around that particular location in order to verify the presence of damage and provide high fidelity localization and characterization of the affected area. This document explores both the application of ultrasonic guided wave physics and the integration of sensing hardware and signal processing algorithms in implementing DSSHM. C1 [Gannon, Adam] SUNY Buffalo, Dept Elect Engn, Buffalo, NY 14260 USA. [Wheeler, Elizabeth] Clemson Univ, Dept Civil Engn, Clemson, SC 29634 USA. [Brown, Kyle] Brigham Young Univ, Dept Mech Engn, Provo, UT 84602 USA. [Flynn, Eric; Warren, Will] Los Alamos Natl Lab, Engn Inst, Los Alamos, NM 87545 USA. RP Flynn, E (reprint author), Los Alamos Natl Lab, Engn Inst, Los Alamos, NM 87545 USA. EM eflynn@lanl.gov OI Flynn, Eric/0000-0003-0965-7052 NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-15230-1; 978-3-319-15229-5 J9 C PROC SOC EXP MECH PY 2015 BP 123 EP 136 DI 10.1007/978-3-319-15230-1_12 PG 14 WC Engineering, Civil; Engineering, Mechanical SC Engineering GA BF3PN UT WOS:000380565500012 ER PT S AU Harrison, C Weiler, J Bleile, R Gaither, K Childs, H AF Harrison, Cyrus Weiler, Jordan Bleile, Ryan Gaither, Kelly Childs, Hank BE Bennett, J Vivodtzev, F Pascucci, V TI A Distributed-Memory Algorithm for Connected Components Labeling of Simulation Data SO Topological and Statistical Methods for Complex Data: Tackling Large-Scale, High-Dimensional, and Multivariate Data Spaces SE Mathematics and Visualization LA English DT Proceedings Paper CT Workshop on the Analysis of Large-scale High-dimensional and Multivariate Data using Topology and Statistics CY JUN 12-14, 2013 CL Le Barp, FRANCE SP French Atom Energy Commiss and Alternat Energies, Sandia Natl Labs, Kitware, SAS C1 [Harrison, Cyrus] Lawrence Livermore Natl Lab, Livermore, CA USA. [Weiler, Jordan; Bleile, Ryan; Childs, Hank] Univ Oregon, Eugene, OR 97403 USA. [Gaither, Kelly] Univ Texas Austin, Texas Adv Comp Ctr, Austin, TX 78712 USA. [Childs, Hank] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Childs, H (reprint author), Univ Oregon, Eugene, OR 97403 USA. EM cyrush@llnl.gov; jweiler@cs.uoregon.edu; rbleile@cs.uoregon.edu; kelly@tacc.utexas.edu; hchilds@lbl.gov NR 18 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1612-3786 BN 978-3-662-44900-4; 978-3-662-44899-1 J9 MATH VIS PY 2015 BP 3 EP 19 DI 10.1007/978-3-662-44900-4__1 PG 17 WC Mathematics, Applied; Mathematics; Statistics & Probability SC Mathematics GA BF3HI UT WOS:000380543100001 ER PT S AU Seshadhri, C Pinar, A Thompson, D Bennett, JC AF Seshadhri, C. Pinar, Ali Thompson, David Bennett, Janine C. BE Bennett, J Vivodtzev, F Pascucci, V TI Sublinear Algorithms for Extreme-Scale Data Analysis SO Topological and Statistical Methods for Complex Data: Tackling Large-Scale, High-Dimensional, and Multivariate Data Spaces SE Mathematics and Visualization LA English DT Proceedings Paper CT Workshop on the Analysis of Large-scale High-dimensional and Multivariate Data using Topology and Statistics CY JUN 12-14, 2013 CL Le Barp, FRANCE SP French Atom Energy Commiss and Alternat Energies, Sandia Natl Labs, Kitware, SAS ID NETWORKS; WORLD C1 [Seshadhri, C.; Pinar, Ali; Bennett, Janine C.] Sandia Natl Labs, POB 969, Livermore, CA 94550 USA. [Thompson, David] Kitware Inc, Carrboro, NC 27510 USA. RP Bennett, JC (reprint author), Sandia Natl Labs, POB 969, Livermore, CA 94550 USA. EM scomand@sandia.gov; apinar@sandia.gov; david.thompson@kitware.com; jcbenne@sandia.gov NR 49 TC 1 Z9 1 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1612-3786 BN 978-3-662-44900-4; 978-3-662-44899-1 J9 MATH VIS PY 2015 BP 39 EP 54 DI 10.1007/978-3-662-44900-4__3 PG 16 WC Mathematics, Applied; Mathematics; Statistics & Probability SC Mathematics GA BF3HI UT WOS:000380543100003 ER PT S AU Gyulassy, A Bhatia, H Bremer, PT Pascucci, V AF Gyulassy, Attila Bhatia, Harsh Bremer, Peer-Timo Pascucci, Valerio BE Bennett, J Vivodtzev, F Pascucci, V TI Computing Accurate Morse-Smale Complexes from Gradient Vector Fields SO Topological and Statistical Methods for Complex Data: Tackling Large-Scale, High-Dimensional, and Multivariate Data Spaces SE Mathematics and Visualization LA English DT Proceedings Paper CT Workshop on the Analysis of Large-scale High-dimensional and Multivariate Data using Topology and Statistics CY JUN 12-14, 2013 CL Le Barp, FRANCE SP French Atom Energy Commiss and Alternat Energies, Sandia Natl Labs, Kitware, SAS ID COSMIC WEB; SIMPLIFICATION; COMPUTATION; ALGORITHMS C1 [Gyulassy, Attila; Bhatia, Harsh; Pascucci, Valerio] Univ Utah, Sch Comp, Salt Lake City, UT 84112 USA. [Gyulassy, Attila; Bhatia, Harsh; Pascucci, Valerio] Univ Utah, SCI Inst, Salt Lake City, UT USA. [Bremer, Peer-Timo] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Gyulassy, A (reprint author), Univ Utah, Sch Comp, Salt Lake City, UT 84112 USA. EM jediati@sci.utah.edu; hbhatia@sci.utah.edu; bremer5@llnl.gov; pascucci@sci.utah.edu NR 30 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1612-3786 BN 978-3-662-44900-4; 978-3-662-44899-1 J9 MATH VIS PY 2015 BP 205 EP 218 DI 10.1007/978-3-662-44900-4_12 PG 14 WC Mathematics, Applied; Mathematics; Statistics & Probability SC Mathematics GA BF3HI UT WOS:000380543100012 ER PT S AU Ebeida, MS Mitchell, SA Patney, A Davidson, AA Tzeng, S Awad, MA Mahmoud, AH Owens, JD AF Ebeida, Mohamed S. Mitchell, Scott A. Patney, Anjul Davidson, Andrew A. Tzeng, Stanley Awad, Muhammad A. Mahmoud, Ahmed H. Owens, John D. BE Bennett, J Vivodtzev, F Pascucci, V TI Exercises in High-Dimensional Sampling: Maximal Poisson-Disk Sampling and k-d Darts SO TOPOLOGICAL AND STATISTICAL METHODS FOR COMPLEX DATA: TACKLING LARGE-SCALE, HIGH-DIMENSIONAL, AND MULTIVARIATE DATA SPACES SE Mathematics and Visualization LA English DT Proceedings Paper CT Workshop on the Analysis of Large-scale High-dimensional and Multivariate Data using Topology and Statistics CY JUN 12-14, 2013 CL Le Barp, FRANCE SP French Atom Energy Commiss and Alternat Energies, Sandia Natl Labs, Kitware, SAS C1 [Ebeida, Mohamed S.; Mitchell, Scott A.] Sandia Natl Labs, Comp Res, POB 5800, Albuquerque, NM 87185 USA. [Patney, Anjul; Davidson, Andrew A.; Owens, John D.] Univ Calif Davis, Dept Elect & Comp Engn, Davis, CA 95616 USA. [Tzeng, Stanley] Univ Calif Davis, Dept Comp Sci, Davis, CA 95616 USA. [Awad, Muhammad A.; Mahmoud, Ahmed H.] Univ Alexandria, Dept Naval Architecture & Marine Engn, Alexandria, Egypt. RP Mitchell, SA (reprint author), Sandia Natl Labs, Comp Res, POB 5800, Albuquerque, NM 87185 USA. EM msebeid@sandia.gov; samitch@sandia.gov; anjul.patney@gmail.com; aaldavidson.ucdavis@gmail.com; solgoodguy@gmail.com; muhammad.a.awad91@student.alx.edu.eg; eng.a.hassen@gmail.com; jowens@ece.ucdavis.edu NR 21 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1612-3786 BN 978-3-662-44900-4; 978-3-662-44899-1 J9 MATH VIS PY 2015 BP 221 EP 238 DI 10.1007/978-3-662-44900-4_13 PG 18 WC Mathematics, Applied; Mathematics; Statistics & Probability SC Mathematics GA BF3HI UT WOS:000380543100013 ER PT S AU Crossno, PJ Shead, TM Sielicki, MA Hunt, WL Martin, S Hsieh, MY AF Crossno, Patricia J. Shead, Timothy M. Sielicki, Milosz A. Hunt, Warren L. Martin, Shawn Hsieh, Ming-Yu BE Bennett, J Vivodtzev, F Pascucci, V TI Slycat Ensemble Analysis of Electrical Circuit Simulations SO Topological and Statistical Methods for Complex Data: Tackling Large-Scale, High-Dimensional, and Multivariate Data Spaces SE Mathematics and Visualization LA English DT Proceedings Paper CT Workshop on the Analysis of Large-scale High-dimensional and Multivariate Data using Topology and Statistics CY JUN 12-14, 2013 CL Le Barp, FRANCE SP French Atom Energy Commiss and Alternat Energies, Sandia Natl Labs, Kitware, SAS ID CANONICAL CORRELATION-ANALYSIS; COMPARATIVE VISUAL ANALYSIS; DATA SETS; VISUALIZATION; DESIGN C1 [Crossno, Patricia J.; Shead, Timothy M.; Sielicki, Milosz A.; Hunt, Warren L.; Martin, Shawn; Hsieh, Ming-Yu] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Crossno, PJ (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM pjcross@sandia.gov; tshead@sandia.gov; masieli@sandia.gov; wlhunt@sandia.gov; smartin@sandia.gov; myhsieh@sandia.gov NR 30 TC 2 Z9 2 U1 1 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1612-3786 BN 978-3-662-44900-4; 978-3-662-44899-1 J9 MATH VIS PY 2015 BP 279 EP 294 DI 10.1007/978-3-662-44900-4_16 PG 16 WC Mathematics, Applied; Mathematics; Statistics & Probability SC Mathematics GA BF3HI UT WOS:000380543100016 ER PT S AU Aguirre, CP Artusa, DR Avignone, FT Azzolini, O Balata, M Banks, TI Bari, G Beeman, J Bellini, F Bersani, A Biassoni, M Brofferio, C Bucci, C Cai, XZ Camacho, A Canonica, L Cao, X Capelli, S Carbone, L Cardani, L Carrettoni, M Casali, N Chiesa, D Chott, N Clemenza, M Cosmelli, C Cremonesi, O Creswick, RJ Dafinei, I Dally, A Datskov, V De Biasi, A Deninno, MM Di Domizio, S di Vacri, ML Ejzak, L Fang, DQ Farach, HA Faverzani, M Fernandes, G Ferri, E Ferroni, F Fiorini, E Franceschi, MA Freedman, SJ Fujikawa, BK Giachero, A Gironi, L Giuliani, A Goett, J Gorla, P Gotti, C Gutierrez, TD Haller, EE Han, K Heeger, KM Hennings-Yeomans, R Huang, HZ Kadel, R Kazkaz, K Keppel, G Kolomensky, YG Li, YL Ligi, C Liu, X Ma, YG Maiano, C Maino, M Martinez, M Maruyama, RH Mei, Y Moggi, N Morganti, S Napolitano, T Nisi, S Nones, C Norman, EB Nucciotti, A O'Donnell, T Orio, F Orlandi, D Ouellet, JL Pallavicini, M Palmieri, V Pattavina, L Pavan, M Pedretti, M Pessina, G Piperno, G Pira, C Pirro, S Previtali, E Rampazzo, V Rosenfeld, C Rusconi, C Sala, E Sangiorgio, S Scielzo, ND Sisti, M Smith, AR Taffarello, L Tenconi, M Terranova, F Tian, WD Tomei, C Trentalange, S Ventura, G Vignati, M Wang, BS Wang, HW Wielgus, L Wilson, J Winslow, LA Wise, T Woodcraft, A Zanotti, L Zarra, C Zhu, BX Zucchelli, S AF Aguirre, C. P. Artusa, D. R. Avignone, F. T., III Azzolini, O. Balata, M. Banks, T. I. Bari, G. Beeman, J. Bellini, F. Bersani, A. Biassoni, M. Brofferio, C. Bucci, C. Cai, X. Z. Camacho, A. Canonica, L. Cao, X. Capelli, S. Carbone, L. Cardani, L. Carrettoni, M. Casali, N. Chiesa, D. Chott, N. Clemenza, M. Cosmelli, C. Cremonesi, O. Creswick, R. J. Dafinei, I. Dally, A. Datskov, V. De Biasi, A. Deninno, M. M. Di Domizio, S. di Vacri, M. L. Ejzak, L. Fang, D. Q. Farach, H. A. Faverzani, M. Fernandes, G. Ferri, E. Ferroni, F. Fiorini, E. Franceschi, M. A. Freedman, S. J. Fujikawa, B. K. Giachero, A. Gironi, L. Giuliani, A. Goett, J. Gorla, P. Gotti, C. Gutierrez, T. D. Haller, E. E. Han, K. Heeger, K. M. Hennings-Yeomans, R. Huang, H. Z. Kadel, R. Kazkaz, K. Keppel, G. Kolomensky, Yu. G. Li, Y. L. Ligi, C. Liu, X. Ma, Y. G. Maiano, C. Maino, M. Martinez, M. Maruyama, R. H. Mei, Y. Moggi, N. Morganti, S. Napolitano, T. Nisi, S. Nones, C. Norman, E. B. Nucciotti, A. O'Donnell, T. Orio, F. Orlandi, D. Ouellet, J. L. Pallavicini, M. Palmieri, V. Pattavina, L. Pavan, M. Pedretti, M. Pessina, G. Piperno, G. Pira, C. Pirro, S. Previtali, E. Rampazzo, V. Rosenfeld, C. Rusconi, C. Sala, E. Sangiorgio, S. Scielzo, N. D. Sisti, M. Smith, A. R. Taffarello, L. Tenconi, M. Terranova, F. Tian, W. D. Tomei, C. Trentalange, S. Ventura, G. Vignati, M. Wang, B. S. Wang, H. W. Wielgus, L. Wilson, J. Winslow, L. A. Wise, T. Woodcraft, A. Zanotti, L. Zarra, C. Zhu, B. X. Zucchelli, S. BE Haxton, W Avignone, F TI Dark Matter search with CUORE-0 and CUORE SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE dark matter; tellurium; CUORE; low threshold AB The Cryogenic Underground Observatory for Rare Events (CUORE) is a ton-scale experiment made of TeO2 bolometers that will probe the neutrinoless double beta decay of Te-130. Excellent energy resolution, low threshold and low background make CUORE sensitive to nuclear recoils, allowing a search for dark matter interactions. With a total mass of 741 kg of TeO2, CUORE can search for an annual modulation of the counting rate at low energies. We present data obtained with CUORE-like detectors and the prospects for a dark matter search in CUORE-0, a 40-kg prototype, and CUORE. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Aguirre, C. P.; Artusa, D. R.; Avignone, F. T., III; Chott, N.; Creswick, R. J.; Farach, H. A.; Rosenfeld, C.; Wilson, J.] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. [Artusa, D. R.; Balata, M.; Banks, T. I.; Bucci, C.; Canonica, L.; Casali, N.; di Vacri, M. L.; Goett, J.; Gorla, P.; Nisi, S.; Orlandi, D.; Pattavina, L.; Pirro, S.; Zarra, C.] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy. [Azzolini, O.; Camacho, A.; De Biasi, A.; Keppel, G.; Palmieri, V.; Pira, C.; Rampazzo, V.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy. [Banks, T. I.; Freedman, S. J.; Hennings-Yeomans, R.; Kolomensky, Yu. G.; O'Donnell, T.; Ouellet, J. L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Banks, T. I.; Freedman, S. J.; Fujikawa, B. K.; Han, K.; Mei, Y.; Ouellet, J. L.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. [Bari, G.; Deninno, M. M.; Moggi, N.; Zucchelli, S.] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy. [Beeman, J.; Haller, E. E.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Bellini, F.; Cardani, L.; Cosmelli, C.; Ferroni, F.; Piperno, G.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. [Bellini, F.; Cardani, L.; Cosmelli, C.; Dafinei, I.; Ferroni, F.; Morganti, S.; Orio, F.; Piperno, G.; Tomei, C.; Vignati, M.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy. [Bersani, A.; Di Domizio, S.; Fernandes, G.; Pallavicini, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. [Biassoni, M.; Brofferio, C.; Capelli, S.; Carrettoni, M.; Chiesa, D.; Clemenza, M.; Faverzani, M.; Ferri, E.; Fiorini, E.; Giachero, A.; Gironi, L.; Gotti, C.; Maiano, C.; Maino, M.; Nucciotti, A.; Pavan, M.; Sala, E.; Sisti, M.; Zanotti, L.] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy. [Biassoni, M.; Brofferio, C.; Capelli, S.; Carbone, L.; Carrettoni, M.; Chiesa, D.; Clemenza, M.; Cremonesi, O.; Datskov, V.; Faverzani, M.; Ferri, E.; Fiorini, E.; Giachero, A.; Gironi, L.; Gotti, C.; Maiano, C.; Maino, M.; Nucciotti, A.; Pavan, M.; Pessina, G.; Previtali, E.; Rusconi, C.; Sala, E.; Sisti, M.; Terranova, F.; Zanotti, L.] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy. [Cai, X. Z.; Cao, X.; Fang, D. Q.; Li, Y. L.; Ma, Y. G.; Tian, W. D.; Wang, H. W.] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. [Dally, A.; Ejzak, L.; Wielgus, L.; Wise, T.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Di Domizio, S.; Fernandes, G.; Pallavicini, M.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. [Franceschi, M. A.; Ligi, C.; Napolitano, T.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Rome, Italy. [Giuliani, A.; Tenconi, M.] Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France. [Gutierrez, T. D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA. [Haller, E. E.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Heeger, K. M.; Maruyama, R. H.; Wise, T.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Huang, H. Z.; Liu, X.; Trentalange, S.; Winslow, L. A.; Zhu, B. X.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Kadel, R.; Kolomensky, Yu. G.] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. [Kazkaz, K.; Norman, E. B.; Pedretti, M.; Sangiorgio, S.; Scielzo, N. D.; Wang, B. S.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Martinez, M.] Univ Zaragoza, Lab Fis Nucl & Astroparticulas, E-50009 Zaragoza, Spain. [Nones, C.] CEA Saclay, Serv Phys Particules, F-91191 Gif Sur Yvette, France. [Norman, E. B.; Wang, B. S.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [Smith, A. R.] Lawrence Berkeley Natl Lab, EH & S Div, Berkeley, CA 94720 USA. [Taffarello, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. [Ventura, G.] Univ Florence, Dipartimento Fis, I-50125 Florence, Italy. [Ventura, G.] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy. [Woodcraft, A.] Univ Edinburgh, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland. [Zucchelli, S.] Univ Bologna, Dipartimento Fis, I-40127 Bologna, Italy. RP Aguirre, CP (reprint author), Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. RI Chiesa, Davide/H-7240-2014; Nucciotti, Angelo/I-8888-2012; Ma, Yu-Gang/M-8122-2013; Giachero, Andrea/I-1081-2013; Casali, Nicola/C-9475-2017; Ligi, Carlo/M-4007-2016; Martinez, Maria/K-4827-2012; Gironi, Luca/P-2860-2016; Pattavina, Luca/I-7498-2015; capelli, silvia/G-5168-2012; Bellini, Fabio/D-1055-2009 OI Chiesa, Davide/0000-0003-1978-1727; Cardani, Laura/0000-0001-5410-118X; pavan, maura/0000-0002-9723-7834; Gotti, Claudio/0000-0003-2501-9608; Nucciotti, Angelo/0000-0002-8458-1556; Ma, Yu-Gang/0000-0002-0233-9900; Giachero, Andrea/0000-0003-0493-695X; Casali, Nicola/0000-0003-3669-8247; Ligi, Carlo/0000-0001-7943-7704; Martinez, Maria/0000-0002-9043-4691; Gironi, Luca/0000-0003-2019-0967; Pattavina, Luca/0000-0003-4192-849X; capelli, silvia/0000-0002-0300-2752; Bellini, Fabio/0000-0002-2936-660X NR 12 TC 0 Z9 0 U1 5 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 13 EP 20 DI 10.1016/j.phpro.2014.12.005 PG 8 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900002 ER PT S AU Chavarria, AE Tiffenberg, J Aguilar-Arevalo, A Amidei, D Bertou, X Cancelo, G D'Olivo, JC Estrada, J Moroni, GF Izraelevitch, F Kilminster, B Langisetty, Y Liao, JH Molina, J Privitera, P Salazar, C Sarkis, Y Scarpine, V Schwarz, T Haro, MS Trillaud, F Zhou, J AF Chavarria, Alvaro E. Tiffenberg, Javier Aguilar-Arevalo, Alexis Amidei, Dan Bertou, Xavier Cancelo, Gustavo Carlos D'Olivo, Juan Estrada, Juan Moroni, Guillermo Fernandez Izraelevitch, Federico Kilminster, Ben Langisetty, Yashmanth Liao, Junhui Molina, Jorge Privitera, Paolo Salazar, Carolina Sarkis, Youssef Scarpine, Vic Schwarz, Tom Sofo Haro, Miguel Trillaud, Frederic Zhou, Jing BE Haxton, W Avignone, F TI DAMIC at SNOLAB SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE DAMIC; Dark matter direct detection; Low-mass WIMPs; Low-threshold detectors; Charge-coupled devices ID DARK-MATTER; SILICON; CCDS; IONIZATION AB We introduce the fully-depleted charge-coupled device (CCD) as a particle detector. We demonstrate its low energy threshold operation, capable of detecting ionizing energy depositions in a single pixel down to 50 eV(ee). We present results of energy calibrations from 0.3 keV(ee) to 60 keV(ee), showing that the CCD is a fully active detector with uniform energy response throughout the silicon target, good resolution (Fano similar to 0.16), and remarkable linear response to electron energy depositions. We show the capability of the CCD to localize the depth of particle interactions within the silicon target. We discuss the mode of operation and unique imaging capabilities of the CCD, and how they may be exploited to characterize and suppress backgrounds. We present the first results from the deployment of 250 mu m thick CCDs in SNOLAB, a prototype for the upcoming DAMIC100. DAMIC100 will have a target mass of 0.1 kg and should be able to directly test the CDMS-Si signal within a year of operation. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Chavarria, Alvaro E.; Privitera, Paolo; Zhou, Jing] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Chavarria, Alvaro E.; Privitera, Paolo; Zhou, Jing] Univ Chicago, Enrico Fermi Inst, Chicago, IL 60637 USA. [Tiffenberg, Javier; Cancelo, Gustavo; Estrada, Juan; Moroni, Guillermo Fernandez; Izraelevitch, Federico; Scarpine, Vic] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Aguilar-Arevalo, Alexis; Carlos D'Olivo, Juan; Salazar, Carolina; Sarkis, Youssef; Trillaud, Frederic] Univ Nacl Autonoma Mexico, Mexico City, DF, Mexico. [Amidei, Dan; Langisetty, Yashmanth; Schwarz, Tom] Univ Michigan, Ann Arbor, MI 48109 USA. [Bertou, Xavier; Sofo Haro, Miguel] CNEA CONICET, Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina. [Liao, Junhui] Univ Zurich, Zurich, Switzerland. [Molina, Jorge] Univ Nacl Asuncion FIUNA, Fac Ingn, Asuncion, Paraguay. RP Chavarria, AE (reprint author), Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. OI Aguilar-Arevalo, Alexis A./0000-0001-9279-3375 NR 18 TC 15 Z9 15 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 21 EP 33 DI 10.1016/j.phpro.2014.12.006 PG 13 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900003 ER PT S AU Akerib, DS Araujo, HM Bai, X Bailey, AJ Balajthy, J Bernard, E Bernstein, A Bradley, A Byram, D Cahn, SB Carmona-Benitez, MC Chan, C Chapman, JJ Chiller, AA Chiller, C Coffey, T Currie, A de Viveiros, L Dobi, A Dobson, J Druszkiewicz, E Edwards, B Faham, CH Fiorucci, S Flores, C Gaitskell, RJ Gehman, VM Ghag, C Gibson, KR Gilchriese, MGD Hall, C Hertel, SA Horn, M Huang, DQ Ihm, M Jacobsen, RG Kazkaz, K Knoche, R Larsen, NA Lee, C Lindote, A Lopes, MI Malling, DC Mannino, R McKinsey, DN Mei, DM Mock, J Moongweluwan, M Morad, J Murphy, AS Nehrkorn, C Nelson, H Neves, F Ott, RA Pangilinan, M Parker, PD Pease, EK Pech, K Phelps, P Reichhart, L Shutt, T Silva, C Solovov, VN Sorensen, P O'Sullivan, K Sumner, TJ Szydagis, M Taylor, D Tennyson, B Tiedt, DR Tripathi, M Uvarov, S Verbus, JR Walsh, N Webb, R White, JT Witherell, MS Wolfs, FLH Woods, M Zhang, C AF Akerib, D. S. Araujo, H. M. Bai, X. Bailey, A. J. Balajthy, J. Bernard, E. Bernstein, A. Bradley, A. Byram, D. Cahn, S. B. Carmona-Benitez, M. C. Chan, C. Chapman, J. J. Chiller, A. A. Chiller, C. Coffey, T. Currie, A. de Viveiros, L. Dobi, A. Dobson, J. Druszkiewicz, E. Edwards, B. Faham, C. H. Fiorucci, S. Flores, C. Gaitskell, R. J. Gehman, V. M. Ghag, C. Gibson, K. R. Gilchriese, M. G. D. Hall, C. Hertel, S. A. Horn, M. Huang, D. Q. Ihm, M. Jacobsen, R. G. Kazkaz, K. Knoche, R. Larsen, N. A. Lee, C. Lindote, A. Lopes, M. I. Malling, D. C. Mannino, R. McKinsey, D. N. Mei, D. -M. Mock, J. Moongweluwan, M. Morad, J. Murphy, A. St. J. Nehrkorn, C. Nelson, H. Neves, F. Ott, R. A. Pangilinan, M. Parker, P. D. Pease, E. K. Pech, K. Phelps, P. Reichhart, L. Shutt, T. Silva, C. Solovov, V. N. Sorensen, P. O'Sullivan, K. Sumner, T. J. Szydagis, M. Taylor, D. Tennyson, B. Tiedt, D. R. Tripathi, M. Uvarov, S. Verbus, J. R. Walsh, N. Webb, R. White, J. T. Witherell, M. S. Wolfs, F. L. H. Woods, M. Zhang, C. BE Haxton, W Avignone, F TI The LUX Experiment SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE Liquid xenon detectors; Dark matter; WIMP; Direct detection ID DETECTOR AB We present the status and prospects of the LUX experiment, which employs approximately 300 kg of two-phase xenon to search for WIMP dark matter interactions. The LUX detector was commissioned at the surface laboratory of the Sanford Underground Research Facility in Lead, SD, between December 2011 and February 2012 and the detector has been operating underground since January, 2013. These proceedings review the results of the commissioning run as well as the status of underground data-taking through the summer of 2013. (C) 2015 Published by Elsevier B.V. C1 [Akerib, D. S.; Bradley, A.; Coffey, T.; Gibson, K. R.; Lee, C.; Pech, K.; Phelps, P.; Shutt, T.] Case Western Reserve Univ, Dept Phys, 10900 Euclid Ave, Cleveland, OH 44106 USA. [Araujo, H. M.; Bailey, A. J.; Currie, A.; Sumner, T. J.] Imperial Coll London, High Energy Phys, Blackett Lab, London SW7 2BZ, England. [Bai, X.; Tiedt, D. R.] South Dakota Sch Mines & Technol, Rapid City, SD 57701 USA. [Balajthy, J.; Dobi, A.; Hall, C.; Knoche, R.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Bernard, E.; Cahn, S. B.; Edwards, B.; Hertel, S. A.; Horn, M.; Larsen, N. A.; McKinsey, D. N.; Parker, P. D.; Pease, E. K.; O'Sullivan, K.; Tennyson, B.] Yale Univ, Dept Phys, New Haven, CT 06511 USA. [Bernstein, A.; Kazkaz, K.; Sorensen, P.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Byram, D.; Chiller, A. A.; Chiller, C.; Mei, D. -M.; Zhang, C.] Univ South Dakota, Dept Phys, Vermillion, SD 57069 USA. [Carmona-Benitez, M. C.; Nehrkorn, C.; Nelson, H.; Witherell, M. S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Chan, C.; Chapman, J. J.; Fiorucci, S.; Gaitskell, R. J.; Huang, D. Q.; Malling, D. C.; Pangilinan, M.; Verbus, J. R.] Brown Univ, Dept Phys, Providence, RI 02912 USA. [de Viveiros, L.; Lindote, A.; Lopes, M. I.; Neves, F.; Silva, C.; Solovov, V. N.] Univ Coimbra, Dept Phys, LIP Coimbra, P-3004516 Coimbra, Portugal. [Dobson, J.; Murphy, A. St. J.] Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh EH9 3JZ, Midlothian, Scotland. [Druszkiewicz, E.; Moongweluwan, M.; Wolfs, F. L. H.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Faham, C. H.; Gehman, V. M.; Gilchriese, M. G. D.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Flores, C.; Mock, J.; Morad, J.; Ott, R. A.; Szydagis, M.; Tripathi, M.; Uvarov, S.; Walsh, N.; Woods, M.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Ghag, C.; Reichhart, L.] UCL, Dept Phys & Astron, London WC1E 6BT, England. [Ihm, M.; Jacobsen, R. G.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Mannino, R.; Webb, R.; White, J. T.] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA. [Taylor, D.] Sanford Underground Res Facil, South Dakota Sci & Technol Author, Lead, SD 57754 USA. RP Gibson, KR (reprint author), Case Western Reserve Univ, Dept Phys, 10900 Euclid Ave, Cleveland, OH 44106 USA. OI Murphy, Alexander/0000-0001-8337-4427 NR 5 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 74 EP 76 DI 10.1016/j.phpro.2014.12.013 PG 3 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900010 ER PT S AU Giovanetti, GK Abgrall, N Aguayo, E Avignone, FT Barabash, AS Bertrand, FE Boswell, M Brudanin, V Busch, M Byram, D Caldwell, AS Chan, YD Christofferson, CD Combs, DC Cuesta, C Detwiler, JA Doe, PJ Efremenko, Y Egorov, V Ejiri, H Elliott, SR Fast, JE Finnerty, P Fraenkle, FM Galindo-Uribarri, A Goett, J Green, MP Gruszko, J Guiseppe, VE Gusev, K Hallin, AL Hazama, R Hegai, A Henning, R Hoppe, EW Howard, S Howe, MA Keeter, KJ Kidd, MF Kochetov, O Konovalov, SI Kouzes, RT LaFerriere, BD Leon, J Leviner, LE Loach, JC MacMullin, J MacMullin, S Martin, RD Meijer, S Mertens, S Nomachi, M Orrell, JL O'Shaughnessy, C Overman, NR Phillips, DG Poon, AWP Pushkin, K Radford, DC Rager, J Rielage, K Robertson, RGH Romero-Romero, E Ronquest, MC Schubert, AG Shanks, B Shima, T Shirchenko, M Snavely, KJ Snyder, N Suriano, AM Thompson, J Timkin, V Tornow, W Trimble, JE Varner, RL Vasilyev, S Vetter, K Vorren, K White, BR Wilkerson, JF Wiseman, C Xu, W Yakushev, E Young, AR Yu, CH Yumatov, V AF Giovanetti, G. K. Abgrall, N. Aguayo, E. Avignone, F. T., III Barabash, A. S. Bertrand, F. E. Boswell, M. Brudanin, V. Busch, M. Byram, D. Caldwell, A. S. Chan, Y-D. Christofferson, C. D. Combs, D. C. Cuesta, C. Detwiler, J. A. Doe, P. J. Efremenko, Yu. Egorov, V. Ejiri, H. Elliott, S. R. Fast, J. E. Finnerty, P. Fraenkle, F. M. Galindo-Uribarri, A. Goett, J. Green, M. P. Gruszko, J. Guiseppe, V. E. Gusev, K. Hallin, A. L. Hazama, R. Hegai, A. Henning, R. Hoppe, E. W. Howard, S. Howe, M. A. Keeter, K. J. Kidd, M. F. Kochetov, O. Konovalov, S. I. Kouzes, R. T. LaFerriere, B. D. Leon, J. Leviner, L. E. Loach, J. C. MacMullin, J. MacMullin, S. Martin, R. D. Meijer, S. Mertens, S. Nomachi, M. Orrell, J. L. O'Shaughnessy, C. Overman, N. R. Phillips, D. G., II Poon, A. W. P. Pushkin, K. Radford, D. C. Rager, J. Rielage, K. Robertson, R. G. H. Romero-Romero, E. Ronquest, M. C. Schubert, A. G. Shanks, B. Shima, T. Shirchenko, M. Snavely, K. J. Snyder, N. Suriano, A. M. Thompson, J. Timkin, V. Tornow, W. Trimble, J. E. Varner, R. L. Vasilyev, S. Vetter, K. Vorren, K. White, B. R. Wilkerson, J. F. Wiseman, C. Xu, W. Yakushev, E. Young, A. R. Yu, C. -H. Yumatov, V. BE Haxton, W Avignone, F TI A Dark Matter Search with MALBEK SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE neutrinoless double beta decay; germanium detector; majorana AB The MAJORANA DEMONSTRATOR is an array of natural and enriched high purity germanium detectors that will search for the neutrinoless double-beta decay of Ge-76 and perform a search for weakly interacting massive particles (WIMPs) with masses below 10 GeV. As part of the Majorana research and development efforts, we have deployed a modified, low-background broad energy germanium detector at the Kimballton Underground Research Facility. With its sub-keV energy threshold, this detector is sensitive to potential non-Standard Model physics, including interactions with WIMPs. We discuss the backgrounds present in the WIMP region of interest and explore the impact of slow surface event contamination when searching for a WIMP signal. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Giovanetti, G. K.; Finnerty, P.; Fraenkle, F. M.; Henning, R.; Howe, M. A.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Rager, J.; Shanks, B.; Snavely, K. J.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27514 USA. [Giovanetti, G. K.; Combs, D. C.; Finnerty, P.; Fraenkle, F. M.; Henning, R.; Howe, M. A.; Leviner, L. E.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Phillips, D. G., II; Rager, J.; Shanks, B.; Snavely, K. J.; Tornow, W.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.; Young, A. R.] Triangle Univ Nucl Lab, Durham, NC 27706 USA. [Abgrall, N.; Chan, Y-D.; Hegai, A.; Mertens, S.; Poon, A. W. P.; Vetter, K.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA USA. [Aguayo, E.; Fast, J. E.; Hoppe, E. W.; Kouzes, R. T.; LaFerriere, B. D.; Orrell, J. L.; Overman, N. R.] Pacific Northwest Natl Lab, Richland, WA USA. [Avignone, F. T., III; Busch, M.; Guiseppe, V. E.; Wiseman, C.] Univ South Carolina, Dept Phys & Astron, Columbia, SC USA. [Avignone, F. T., III; Bertrand, F. E.; Busch, M.; Galindo-Uribarri, A.; Green, M. P.; Radford, D. C.; Romero-Romero, E.; Varner, R. L.; White, B. R.; Wilkerson, J. F.; Yu, C. -H.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Barabash, A. S.; Konovalov, S. I.; Yumatov, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia. [Boswell, M.; Elliott, S. R.; Goett, J.; Rielage, K.; Ronquest, M. C.; Xu, W.] Los Alamos Natl Lab, Los Alamos, NM USA. [Brudanin, V.; Egorov, V.; Gusev, K.; Kochetov, O.; Shirchenko, M.; Timkin, V.; Yakushev, E.] Joint Inst Nucl Res, Dubna, Russia. [Tornow, W.] Duke Univ, Dept Phys, Durham, NC 27706 USA. [Byram, D.; Martin, R. D.; Pushkin, K.; Snyder, N.] Univ South Dakota, Dept Phys, Vermillion, SD 57069 USA. [Caldwell, A. S.; Christofferson, C. D.; Howard, S.; Suriano, A. M.; Thompson, J.] South Dakota Sch Mines & Technol, Rapid City, SD USA. [Combs, D. C.; Leviner, L. E.; Phillips, D. G., II; Young, A. R.] North Carolina State Univ, Dept Phys, Raleigh, NC USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Efremenko, Yu.; Romero-Romero, E.; Vasilyev, S.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Res Ctr Nucl Phys, Osaka, Japan. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Dept Phys, Osaka, Japan. [Hallin, A. L.] Univ Alberta, Ctr Particle Phys, Edmonton, AB, Canada. [Keeter, K. J.; Thompson, J.] Black Hills State Univ, Dept Phys, Spearfish, SD 57799 USA. [Kidd, M. F.] Tennessee Technol Univ, Cookeville, TN 38505 USA. [Loach, J. C.] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China. [Hegai, A.] Univ Tubingen, Tubingen, Germany. [Vetter, K.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Giovanetti, GK (reprint author), Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27514 USA. RI Barabash, Alexander/S-8851-2016; OI Rielage, Keith/0000-0002-7392-7152 NR 15 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 77 EP 84 DI 10.1016/j.phpro.2014.12.014 PG 8 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900011 ER PT S AU Harding, JP AF Harding, J. Patrick CA HAWC Collaboration BE Haxton, W Avignone, F TI The Search for TeV-scale Dark Matter with the HAWC Observatory SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE dark matter; gamma rays; astrophysics; cosmic rays; anisotropy ID GAMMA-RAYS; HALO AB The High Altitude Water Cherenkov (HAWC) observatory is a wide field-of-view detector sensitive to 100 GeV - 100 TeV gamma rays and cosmic rays. Located at an elevation of 4100 m on the Sierra Negra mountain in Mexico, HAWC observes extensive air showers from gamma and cosmic rays with an array of water tanks which produce Cherenkov light in the presence of air showers. With a field-of-view capable of observing 2/ 3 of the sky each day, and a sensitivity of 1 Crab/day, HAWC will be able to map out the sky in gamma and cosmic rays in detail. In this paper, we discuss the capabilities of HAWC to map out the directions and spectra of TeV gamma rays and cosmic rays coming from sources of dark matter annihilation. We discuss the HAWC sensitivity to multiple extended sources of dark matter annihilation and the possibility of HAWC observations of annihilations in nearby dark matter subhalos. Published by Elsevier B.V. C1 [Harding, J. Patrick] Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. RP Harding, JP (reprint author), Los Alamos Natl Lab, Div Phys, Los Alamos, NM 87545 USA. NR 39 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 91 EP 96 DI 10.1016/j.phpro.2014.12.016 PG 6 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900013 ER PT S AU Anand, N Fitzpatrick, AL Haxton, WC AF Anand, Nikhil Fitzpatrick, A. Liam Haxton, W. C. BE Haxton, W Avignone, F TI Model-independent Analyses of Dark-Matter Particle Interactions SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab ID CANDIDATES AB A model-independent treatment of dark-matter particle elastic scattering has been developed, yielding the most general interaction for WIMP-nucleon low-energy scattering, and the resulting amplitude has been embedded into the nucleus, taking into account the selection rules imposed by parity and time-reversal. One finds that, in contrast to the usual spin-independent/spin-dependent (SI/SD) formulation, the resulting cross section contains six independent nuclear response functions, three of which are associated with possible velocity-dependent interactions. We find that current experiments are four orders of magnitude more sensitive to derivative couplings than is apparent in the standard SI/SD treatment, which necessarily associated such interactions with cross sections proportional to v(T)(2) similar to 10(-6), where v(T) is the WIMP velocity relative to the center of mass of the nuclear target. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Anand, Nikhil; Haxton, W. C.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Anand, Nikhil] Johns Hopkins Univ, Dept Phys, Laurel, MD 20723 USA. [Fitzpatrick, A. Liam] Stanford Univ, Stanford Inst Theoret Phys, Stanford, CA 94305 USA. [Haxton, W. C.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Anand, N (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. NR 11 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 97 EP 106 DI 10.1016/j.phpro.2014.12.017 PG 10 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900014 ER PT S AU Rielage, K Akashi-Ronquest, M Bodmer, M Bourque, R Buck, B Butcher, A Caldwell, T Chen, Y Coakley, K Flores, E Formaggio, JA Gastler, D Giuliani, F Gold, M Grace, E Griego, J Guerrero, N Guiseppe, V Henning, R Hime, A Jaditz, S Kachulis, C Kearns, E Kelsey, J Klein, JR Latorre, A Lawson, I Linden, S Lopez, F McKinsey, DN MacMullin, S Mastbaum, A Mei, DM Monroe, J Nikkel, JA Oertel, J Gann, GDO Palladino, K Perumpilly, G Rodriguez, L Schnee, R Seibert, S Walding, J Wang, B Wang, J Zhang, C AF Rielage, K. Akashi-Ronquest, M. Bodmer, M. Bourque, R. Buck, B. Butcher, A. Caldwell, T. Chen, Y. Coakley, K. Flores, E. Formaggio, J. A. Gastler, D. Giuliani, F. Gold, M. Grace, E. Griego, J. Guerrero, N. Guiseppe, V. Henning, R. Hime, A. Jaditz, S. Kachulis, C. Kearns, E. Kelsey, J. Klein, J. R. Latorre, A. Lawson, I. Linden, S. Lopez, F. McKinsey, D. N. MacMullin, S. Mastbaum, A. Mei, D. -M. Monroe, J. Nikkel, J. A. Oertel, J. Gann, G. D. Orebi Palladino, K. Perumpilly, G. Rodriguez, L. Schnee, R. Seibert, S. Walding, J. Wang, B. Wang, J. Zhang, C. BE Haxton, W Avignone, F TI Update on the MiniCLEAN Dark Matter Experiment SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE dark matter; liquid argon; liquid neon; scintillation; WIMP; solar neutrinos ID SCINTILLATION AB The direct search for dark matter is entering a period of increased sensitivity to the hypothetical Weakly Interacting Massive Particle (WIMP). One such technology that is being examined is a scintillation only noble liquid experiment, MiniCLEAN. MiniCLEAN utilizes over 500 kg of liquid cryogen to detect nuclear recoils from WIMP dark matter and serves as a demonstration for a future detector of order 50 to 100 tonnes. The liquid cryogen is interchangeable between argon and neon to study the A(2) dependence of the potential signal and examine backgrounds. MiniCLEAN utilizes a unique modular design with spherical geometry to maximize the light yield using cold photomultiplier tubes in a single-phase detector. Pulse shape discrimination techniques are used to separate nuclear recoil signals from electron recoil backgrounds. MiniCLEAN will be spiked with additional Ar-39 to demonstrate the effective reach of the pulse shape discrimination capability. Assembly of the experiment is underway at SNOLAB and an update on the project is given. Published by Elsevier B.V. C1 [Gastler, D.; Kachulis, C.; Kearns, E.; Linden, S.] Boston Univ, Dept Phys, 590 Commonwealth Ave, Boston, MA 02215 USA. [Gann, G. D. Orebi] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Rielage, K.; Akashi-Ronquest, M.; Bourque, R.; Flores, E.; Griego, J.; Hime, A.; Lopez, F.; Oertel, J.; Rodriguez, L.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Buck, B.; Formaggio, J. A.; Guerrero, N.; Jaditz, S.; Kelsey, J.; Palladino, K.] MIT, Dept Phys, Cambridge, MA 02139 USA. [Coakley, K.] NIST, Boulder, CO 80305 USA. [Bodmer, M.; Giuliani, F.; Gold, M.; Wang, J.] Univ New Mexico, Albuquerque, NM 87131 USA. [Henning, R.; MacMullin, S.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC 27599 USA. [Caldwell, T.; Klein, J. R.; Latorre, A.; Mastbaum, A.; Seibert, S.] Univ Penn, Dept Phys & Astron, Philadelphia, PA 19104 USA. [Butcher, A.; Grace, E.; Monroe, J.; Nikkel, J. A.; Walding, J.] Royal Holloway Univ London, Dept Phys, Egham TW20 0EX, Surrey, England. [Lawson, I.; Palladino, K.] SNOLAB Inst, Lively, ON P3Y 1N2, Canada. [Guiseppe, V.; Mei, D. -M.; Perumpilly, G.] Univ South Dakota, Dept Phys, Vermillion, SD 57069 USA. [Chen, Y.; Schnee, R.; Wang, B.; Zhang, C.] Syracuse Univ, Phys Dept, Syracuse, NY 13244 USA. [McKinsey, D. N.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. RP Rielage, K (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM rielagek@lanl.gov OI Rielage, Keith/0000-0002-7392-7152 NR 11 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 144 EP 152 DI 10.1016/j.phpro.2014.12.024 PG 9 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900020 ER PT S AU Ruz, J Vogel, JK Pivovaroff, MJ AF Ruz, J. Vogel, J. K. Pivovaroff, M. J. CA CAST Collaboration BE Haxton, W Avignone, F TI Recent constraints on axion-photon and axion-electron coupling with the CAST experiment SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE axions; helioscopes; sun; magnetic fields; white dwarfs ID CP INVARIANCE; TELESCOPE; PARTICLES; DETECTOR; BOUNDS; MATTER AB The CERN Axion Solar Telescope (CAST) is a helioscope looking for axions arising from the solar core plasma and arriving to Earth. The experiment, located in Geneva (Switzerland) is able to follow the Sun during sunrise and sunset. Four x-ray detectors mounted on both ends of the magnet wait for photons from axion-to-photon conversion due to the Primakoff effect. Up to date, with the completion of Phases I and II, CAST has been looking for axions that could be produced in the Sun by both, hadronic and non-hadronic mechanisms. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Ruz, J.; Vogel, J. K.; Pivovaroff, M. J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [CAST Collaboration] European Org Nucl Res, Geneva, Switzerland. RP Ruz, J (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM Jaime.Ruz@cern.ch NR 22 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 153 EP 156 DI 10.1016/j.phpro.2014.12.025 PG 4 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900021 ER PT S AU Vogel, JK Armengaud, E Avignone, FT Betz, M Brax, P Brun, P Cantatore, G Carmona, JM Carosi, GP Caspers, F Caspi, S Cetin, SA Chelouche, D Christensen, FE Dael, A Dafni, T Davenport, M Derbin, AV Desch, K Diago, A Dobrich, B Dratchnev, I Dudarev, A Eleftheriadis, C Fanourakis, G Ferrer-Ribas, E Galan, J Garcia, JA Garza, JG Geralis, T Gimeno, B Giomataris, I Gninenko, S Gomez, H Gonzalez-Diaz, D Guendelman, E Hailey, CJ Hiramatsu, T Hoffmann, DHH Horns, D Iguaz, FJ Irastorza, IG Isern, J Imai, K Jakobsen, AC Jaeckel, J Jakovcic, K Kaminski, J Kawasaki, M Karuza, M Krcmar, M Kousouris, K Krieger, C Lakic, B Limousin, O Lindner, A Liolios, A Luzon, G Matsuki, S Muratova, VN Nones, C Ortega, I Papaevangelou, T Pivovaroff, MJ Raffelt, G Redondo, J Ringwald, A Russenschuck, S Ruz, J Saikawa, K Savvidis, I Sekiguchi, T Semertzidis, YK Shilon, I Sikivie, P Silva, H ten Kate, H Tomas, A Troitsky, S Vafeiadis, T van Bibber, K Vedrine, P Villar, JA Walckiers, L Weltman, A Wester, W Yildiz, SC Zioutas, K AF Vogel, J. K. Armengaud, E. Avignone, F. T. Betz, M. Brax, P. Brun, P. Cantatore, G. Carmona, J. M. Carosi, G. P. Caspers, F. Caspi, S. Cetin, S. A. Chelouche, D. Christensen, F. E. Dael, A. Dafni, T. Davenport, M. Derbin, A. V. Desch, K. Diago, A. Doebrich, B. Dratchnev, I. Dudarev, A. Eleftheriadis, C. Fanourakis, G. Ferrer-Ribas, E. Galan, J. Garcia, J. A. Garza, J. G. Geralis, T. Gimeno, B. Giomataris, I. Gninenko, S. Gomez, H. Gonzalez-Diaz, D. Guendelman, E. Hailey, C. J. Hiramatsu, T. Hoffmann, D. H. H. Horns, D. Iguaz, F. J. Irastorza, I. G. Isern, J. Imai, K. Jakobsen, A. C. Jaeckel, J. Jakovcic, K. Kaminski, J. Kawasaki, M. Karuza, M. Krcmar, M. Kousouris, K. Krieger, C. Lakic, B. Limousin, O. Lindner, A. Liolios, A. Luzon, G. Matsuki, S. Muratova, V. N. Nones, C. Ortega, I. Papaevangelou, T. Pivovaroff, M. J. Raffelt, G. Redondo, J. Ringwald, A. Russenschuck, S. Ruz, J. Saikawa, K. Savvidis, I. Sekiguchi, T. Semertzidis, Y. K. Shilon, I. Sikivie, P. Silva, H. ten Kate, H. Tomas, A. Troitsky, S. Vafeiadis, T. van Bibber, K. Vedrine, P. Villar, J. A. Walckiers, L. Weltman, A. Wester, W. Yildiz, S. C. Zioutas, K. BE Haxton, W Avignone, F TI The next generation of axion helioscopes: The International Axion Observatory (IAXO) SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE dark matter; axion; strong CP problem; helioscopes; IAXO; ALP; astroparticle physics ID SOLAR AXIONS; COHERENT CONVERSION; INVISIBLE-AXION; MAGNETIC-FIELD; SEARCH; TELESCOPE; PHOTONS AB The International Axion Observatory (IAXO) is a proposed 4th-generation axion helioscope with the primary physics research goal to search for solar axions via their Primakoff conversion into photons of 1 - 10 keV energies in a strong magnetic field. IAXO will achieve a sensitivity to the axion-photon coupling ga. down to a few x10(-12) GeV-1 for a wide range of axion masses up to similar to 0.25 eV. This is an improvement over the currently best (3rd generation) axion helioscope, the CERN Axion Solar Telescope (CAST), of about 5 orders of magnitude in signal strength, corresponding to a factor similar to 20 in the axion photon coupling. IAXO's sensitivity relies on the construction of a large superconducting 8-coil toroidal magnet of 20 m length optimized for axion research. Each of the eight 60 cm diameter magnet bores is equipped with x-ray optics focusing the signal photons into similar to 0.2 cm(2) spots that are imaged by very low background x-ray detectors. The magnet will be built into a structure with elevation and azimuth drives that will allow solar tracking for 12 hours each day. This contribution is a summary of our papers [1, 2, 3] and we refer to these for further details. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Vogel, J. K.; Carosi, G. P.; Pivovaroff, M. J.; Ruz, J.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Div Phys, Livermore, CA 94550 USA. [Armengaud, E.; Brun, P.; Dael, A.; Ferrer-Ribas, E.; Galan, J.; Giomataris, I.; Limousin, O.; Nones, C.; Papaevangelou, T.; Vedrine, P.] Ctr Saclay, CEA Irfu, F-91191 Gif Sur Yvette, France. [Avignone, F. T.] Univ South Carolina, Dept Phys, Columbia, SC USA. [Betz, M.; Caspers, F.; Davenport, M.; Dudarev, A.; Kousouris, K.; Russenschuck, S.; Shilon, I.; Silva, H.; ten Kate, H.; Vafeiadis, T.; Walckiers, L.] CERN, European Org Nucl Res, CH-1211 Geneva, Switzerland. [Brax, P.] CEA Saclay, Ctr Etud Saclay, IPHT, F-91191 Gif Sur Yvette, France. [Cantatore, G.] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy. [Cantatore, G.] Univ Trieste, Trieste, Italy. [Carmona, J. M.; Dafni, T.; Diago, A.; Garcia, J. A.; Garza, J. G.; Gomez, H.; Gonzalez-Diaz, D.; Iguaz, F. J.; Irastorza, I. G.; Luzon, G.; Ortega, I.; Tomas, A.; Villar, J. A.] Univ Zaragoza, Lab Fis Nucl & Altas Energias, Zaragoza, Spain. [Caspi, S.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Cetin, S. A.; Yildiz, S. C.] Dogus Univ, Istanbul, Turkey. [Chelouche, D.] Univ Haifa, Dept Phys, IL-31905 Haifa, Israel. [Christensen, F. E.; Jakobsen, A. C.] Tech Univ Denmark, DTU Space, Lyngby, Denmark. [Derbin, A. V.; Dratchnev, I.; Muratova, V. N.] St Petersburg Nucl Phys Inst, St Petersburg, Russia. [Desch, K.; Kaminski, J.; Krieger, C.] Univ Bonn, Inst Phys, Bonn, Germany. [Doebrich, B.; Lindner, A.; Ringwald, A.] Deutsch Elektronen Synchrotron DESY, Hamburg, Germany. [Eleftheriadis, C.; Liolios, A.; Savvidis, I.] Aristotle Univ Thessaloniki, Thessaloniki, Greece. [Fanourakis, G.; Geralis, T.] Natl Ctr Sci Res Demokritos, Athens, Greece. [Gimeno, B.] Univ Valencia, Inst Ciencias Mat, Valencia, Spain. [Gninenko, S.; Troitsky, S.] Russian Acad Sci, Inst Nucl Res, Moscow, Russia. [Guendelman, E.] Ben Gurion Univ Negev, Dept Phys, Beer Sheva, Israel. [Hailey, C. J.] Columbia Univ, Columbia Astrophys Lab, New York, NY USA. [Hiramatsu, T.] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto, Japan. [Hoffmann, D. H. H.] Tech Univ Darmstadt, IKP, Darmstadt, Germany. [Horns, D.] Univ Hamburg, Inst Expt Phys, Hamburg, Germany. [Isern, J.] Inst Ciencies Espai CSIC IEEC, Fac Ciencies, Bellaterra, Spain. [Imai, K.] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki, Japan. [Jaeckel, J.] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany. [Jakovcic, K.; Krcmar, M.; Lakic, B.] Rudjer Boskovic Inst, Zagreb, Croatia. [Kawasaki, M.; Sekiguchi, T.] Univ Tokyo, Inst Cosm Ray Res, Tokyo, Japan. [Karuza, M.] Univ Rijeka, Rijeka, Croatia. [Matsuki, S.] Kyoto Univ, Res Ctr Low Temp & Mat Sci, Kyoto 6068502, Japan. [Raffelt, G.; Redondo, J.] Max Planck Inst Phys & Astrophys, Munich, Germany. [Saikawa, K.] Tokyo Inst Technol, Dept Phys, Tokyo, Japan. [Semertzidis, Y. K.] Brookhaven Natl Lab, Dept Phys, Upton, NY 11973 USA. [Sikivie, P.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA. [van Bibber, K.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [Weltman, A.] Univ Cape Town, Cape Town, South Africa. [Wester, W.] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. [Zioutas, K.] Univ Patras, Dept Phys, GR-26110 Patras, Greece. RP Vogel, JK (reprint author), Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Div Phys, Livermore, CA 94550 USA. EM vogel9@llnl.gov RI Papaevangelou, Thomas/G-2482-2016; Irastorza, Igor/B-2085-2012 OI Papaevangelou, Thomas/0000-0003-2829-9158; Irastorza, Igor/0000-0003-1163-1687 NR 49 TC 2 Z9 2 U1 2 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 193 EP 200 DI 10.1016/j.phpro.2014.12.031 PG 8 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900027 ER PT S AU Green, MP Abgrall, N Aguayo, E Avignone, FT Barabash, AS Bertrand, FE Boswell, M Brudanin, V Busch, M Byram, D Caldwell, AS Chan, YD Christofferson, CD Combs, DC Cuesta, C Detwiler, JA Doe, PJ Efremenko, Y Egorov, V Ejiri, H Elliott, SR Fast, JE Finnerty, P Fraenkle, FM Galindo-Uribarri, A Giovanetti, GK Goett, J Gruszko, J Guiseppe, VE Gusev, K Hallin, AL Hazama, R Hegai, A Henning, R Hoppe, EW Howard, S Howe, MA Keeter, KJ Kidd, MF Kochetov, O Konovalov, SI Kouzes, RT LaFerriere, BD Leon, J Leviner, LE Loach, JC MacMullin, J MacMullin, S Martin, RD Meijer, S Mertens, S Nomachi, M Orrell, JL O'Shaughnessy, C Overman, NR Phillips, DG Poon, AWP Pushkin, K Radford, DC Rager, J Rielage, K Robertson, RGH Romero-Romero, E Ronquest, MC Schubert, AG Shanks, B Shima, T Shirchenko, M Snavely, KJ Snyder, N Suriano, AM Thompson, J Timkin, V Tornow, W Trimble, JE Varner, RL Vasilyev, S Vetter, K Vorren, K White, BR Wilkerson, JF Wiseman, C Xu, W Yakushev, E Young, AR Yu, CH Yumatov, V AF Green, M. P. Abgrall, N. Aguayo, E. Avignone, F. T., III Barabash, A. S. Bertrand, F. E. Boswell, M. Brudanin, V. Busch, M. Byram, D. Caldwell, A. S. Chan, Y-D. Christofferson, C. D. Combs, D. C. Cuesta, C. Detwiler, J. A. Doe, P. J. Efremenko, Yu. Egorov, V. Ejiri, H. Elliott, S. R. Fast, J. E. Finnerty, P. Fraenkle, F. M. Galindo-Uribarri, A. Giovanetti, G. K. Goett, J. Gruszko, J. Guiseppe, V. E. Gusev, K. Hallin, A. L. Hazama, R. Hegai, A. Henning, R. Hoppe, E. W. Howard, S. Howe, M. A. Keeter, K. J. Kidd, M. F. Kochetov, O. Konovalov, S. I. Kouzes, R. T. LaFerriere, B. D. Leon, J. Leviner, L. E. Loach, J. C. MacMullin, J. MacMullin, S. Martin, R. D. Meijer, S. Mertens, S. Nomachi, M. Orrell, J. L. O'Shaughnessy, C. Overman, N. R. Phillips, D. G., II Poon, A. W. P. Pushkin, K. Radford, D. C. Rager, J. Rielage, K. Robertson, R. G. H. Romero-Romero, E. Ronquest, M. C. Schubert, A. G. Shanks, B. Shima, T. Shirchenko, M. Snavely, K. J. Snyder, N. Suriano, A. M. Thompson, J. Timkin, V. Tornow, W. Trimble, J. E. Varner, R. L. Vasilyev, S. Vetter, K. Vorren, K. White, B. R. Wilkerson, J. F. Wiseman, C. Xu, W. Yakushev, E. Young, A. R. Yu, C. -H. Yumatov, V. BE Haxton, W Avignone, F TI The MAJORANA DEMONSTRATOR for 0 nu beta beta: Current Status and Future Plans SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE neutrinoless double beta decay; germanium detector; majorana ID DOUBLE-BETA DECAY AB The MAJORANA DEMONSTRATOR will search for neutrinoless-double-beta decay (0 nu beta beta) in Ge-76, while establishing the feasibility of a future tonne-scale germanium-based 0 nu beta beta experiment, and performing searches for new physics beyond the Standard Model. The experiment, currently under construction at the Sanford Underground Research Facility in Lead, SD, will consist of a pair of modular high-purity germanium detector arrays housed inside of a compact copper, lead, and polyethylene shield. Through a combination of strict materials qualifications and assay, low-background design, and powerful background rejection techniques, the Demonstrator aims to achieve a background rate in the 0 nu beta beta region of interest (ROI) of no more than 3 counts in the 0 nu beta beta-decay ROI per tonne of target isotope per year (cnts/(ROI-t-y)). The current status of the DEMONSTRATOR is discussed, as are plans for its completion. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Green, M. P.; Avignone, F. T., III; Bertrand, F. E.; Galindo-Uribarri, A.; Radford, D. C.; Romero-Romero, E.; Varner, R. L.; White, B. R.; Wilkerson, J. F.; Yu, C. -H.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. [Abgrall, N.; Chan, Y-D.; Hegai, A.; Mertens, S.; Poon, A. W. P.; Vetter, K.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA USA. [Aguayo, E.; Fast, J. E.; Hoppe, E. W.; Kouzes, R. T.; LaFerriere, B. D.; Orrell, J. L.; Overman, N. R.] Pacific Northwest Natl Lab, Richland, WA USA. [Avignone, F. T., III; Guiseppe, V. E.; Wiseman, C.] Univ South Carolina, Dept Phys & Astron, Columbia, SC USA. [Barabash, A. S.; Konovalov, S. I.; Yumatov, V.] Inst Theoret & Expt Phys, Moscow, Russia. [Boswell, M.; Elliott, S. R.; Goett, J.; Rielage, K.; Ronquest, M. C.; Xu, W.] Los Alamos Natl Lab, Los Alamos, NM USA. [Brudanin, V.; Egorov, V.; Gusev, K.; Kochetov, O.; Shirchenko, M.; Timkin, V.; Yakushev, E.] Joint Inst Nucl Res, Dubna, Russia. [Busch, M.; Tornow, W.] Duke Univ, Dept Phys, Durham, NC 27706 USA. [Busch, M.; Combs, D. C.; Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; Leviner, L. E.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Phillips, D. G., II; Rager, J.; Shanks, B.; Snavely, K. J.; Tornow, W.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.; Young, A. R.] Triangle Univ Nucl Lab, Durham, NC 27706 USA. [Byram, D.; Martin, R. D.; Pushkin, K.; Snyder, N.] Univ South Dakota, Dept Phys, Vermillion, SD USA. [Caldwell, A. S.; Christofferson, C. D.; Howard, S.; Suriano, A. M.; Thompson, J.] South Dakota Sch Mines & Technol, Rapid City, SD USA. [Combs, D. C.; Leviner, L. E.; Phillips, D. G., II; Young, A. R.] North Carolina State Univ, Dept Phys, Raleigh, NC USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Efremenko, Yu.; Romero-Romero, E.; Vasilyev, S.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Res Ctr Nucl Phys, Osaka, Japan. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Dept Phys, Osaka, Japan. [Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Rager, J.; Shanks, B.; Snavely, K. J.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC USA. [Hallin, A. L.] Univ Alberta, Ctr Particle Phys, Edmonton, AB, Canada. [Keeter, K. J.; Thompson, J.] Black Hills State Univ, Dept Phys, Spearfish, SD 57799 USA. [Kidd, M. F.] Tennessee Technol Univ, Cookeville, TN USA. [Loach, J. C.] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China. RP Green, MP (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RI Barabash, Alexander/S-8851-2016 OI Rielage, Keith/0000-0002-7392-7152; NR 22 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 232 EP 240 DI 10.1016/j.phpro.2014.12.038 PG 9 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900034 ER PT S AU Artusa, DR Avignone, FT Azzolini, O Balata, M Banks, TI Bari, G Beeman, J Bellini, F Bersani, A Biassoni, M Brofferio, C Bucci, C Cai, XZ Camacho, A Canonica, L Cao, XG Capelli, S Carbone, L Cardani, L Carrettoni, M Casali, N Chiesa, D Chott, N Clemenza, M Copello, S Cosmelli, C Cremonesi, O Creswick, RJ Dafinei, I Dally, A Datskov, V De Biasi, A Deninno, MM Di Domizio, S di Vacri, ML Ejzak, L Fang, DQ Farach, HA Faverzani, M Fernandes, G Ferri, E Ferroni, F Fiorini, E Franceschi, MA Freedman, SJ Fujikawa, BK Giachero, A Gironi, L Giuliani, A Goett, J Gorla, P Gotti, C Gutierrez, TD Haller, EE Han, K Heeger, KM Hennings-Yeomans, R Huang, HZ Kadel, R Kazkaz, K Keppel, G Kolomensky, YG Li, YL Ligi, C Liu, X Ma, YG Maiano, C Maino, M Martinez, M Maruyama, RH Mei, Y Moggi, N Morganti, S Napolitano, T Nisi, S Nones, C Norman, EB Nucciotti, A O'Donnell, T Orio, F Orlandi, D Ouellet, JL Pallavicini, M Palmieri, V Pattavina, L Pavan, M Pedretti, M Pessina, G Pettinacci, V Piperno, G Pira, C Pirro, S Previtali, E Rampazzo, V Rosenfeld, C Rusconi, C Sala, E Sangiorgio, S Scielzo, ND Sisti, M Smith, AR Taffarello, L Tenconi, M Terranova, F Tian, WD Tomei, C Trentalange, S Ventura, G Vignati, M Wang, BS Wang, HW Wielgus, L Wilson, J Winslow, LA Wise, T Woodcraft, A Zanotti, L Zarra, C Zhu, BX Zucchelli, S AF Artusa, D. R. Avignone, F. T., III Azzolini, O. Balata, M. Banks, T. I. Bari, G. Beeman, J. Bellini, F. Bersani, A. Biassoni, M. Brofferio, C. Bucci, C. Cai, X. Z. Camacho, A. Canonica, L. Cao, X. G. Capelli, S. Carbone, L. Cardani, L. Carrettoni, M. Casali, N. Chiesa, D. Chott, N. Clemenza, M. Copello, S. Cosmelli, C. Cremonesi, O. Creswick, R. J. Dafinei, I. Dally, A. Datskov, V. De Biasi, A. Deninno, M. M. Di Domizio, S. di Vacri, M. L. Ejzak, L. Fang, D. Q. Farach, H. A. Faverzani, M. Fernandes, G. Ferri, E. Ferroni, F. Fiorini, E. Franceschi, M. A. Freedman, S. J. Fujikawa, B. K. Giachero, A. Gironi, L. Giuliani, A. Goett, J. Gorla, P. Gotti, C. Gutierrez, T. D. Haller, E. E. Han, K. Heeger, K. M. Hennings-Yeomans, R. Huang, H. Z. Kadel, R. Kazkaz, K. Keppel, G. Kolomensky, Yu. G. Li, Y. L. Ligi, C. Liu, X. Ma, Y. G. Maiano, C. Maino, M. Martinez, M. Maruyama, R. H. Mei, Y. Moggi, N. Morganti, S. Napolitano, T. Nisi, S. Nones, C. Norman, E. B. Nucciotti, A. O'Donnell, T. Orio, F. Orlandi, D. Ouellet, J. L. Pallavicini, M. Palmieri, V. Pattavina, L. Pavan, M. Pedretti, M. Pessina, G. Pettinacci, V. Piperno, G. Pira, C. Pirro, S. Previtali, E. Rampazzo, V. Rosenfeld, C. Rusconi, C. Sala, E. Sangiorgio, S. Scielzo, N. D. Sisti, M. Smith, A. R. Taffarello, L. Tenconi, M. Terranova, F. Tian, W. D. Tomei, C. Trentalange, S. Ventura, G. Vignati, M. Wang, B. S. Wang, H. W. Wielgus, L. Wilson, J. Winslow, L. A. Wise, T. Woodcraft, A. Zanotti, L. Zarra, C. Zhu, B. X. Zucchelli, S. BE Haxton, W Avignone, F TI CUORE and beyond: bolometric techniques to explore inverted neutrino mass hierarchy SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab ID DOUBLE-BETA-DECAY; SCINTILLATING BOLOMETERS; ZNMOO4; LIGHT AB The CUORE (Cryogenic Underground Observatory for Rare Events) experiment will search for neutrinoless double beta decay of Te-130. With 741 kg of TeO2 crystals and an excellent energy resolution of 5 keV (0.2%) at the region of interest, CUORE will be one of the most competitive neutrinoless double beta decay experiments on the horizon. With five years of live time, CUORE projected neutrinoless double beta decay half-life sensitivity is 1.6 x 10(26) y at 1 sigma (9.5 x 10(25) y at the 90% confidence level), which corresponds to an upper limit on the effective Majorana mass in the range 40-100 meV (50-130 meV). Further background rejection with auxiliary light detector can significantly improve the search sensitivity and competitiveness of bolometric detectors to fully explore the inverted neutrino mass hierarchy with Te-130 and possibly other double beta decay candidate nuclei. C1 [Artusa, D. R.; Avignone, F. T., III; Chott, N.; Creswick, R. J.; Farach, H. A.; Rosenfeld, C.; Wilson, J.] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. [Artusa, D. R.; Balata, M.; Banks, T. I.; Bucci, C.; Canonica, L.; Casali, N.; di Vacri, M. L.; Goett, J.; Gorla, P.; Nisi, S.; Orlandi, D.; Pattavina, L.; Pirro, S.; Zarra, C.] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy. [Azzolini, O.; Camacho, A.; De Biasi, A.; Keppel, G.; Palmieri, V.; Pira, C.; Rampazzo, V.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Padua, Italy. [Banks, T. I.; Freedman, S. J.; Hennings-Yeomans, R.; Kolomensky, Yu. G.; O'Donnell, T.; Ouellet, J. L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Banks, T. I.; Freedman, S. J.; Fujikawa, B. K.; Han, K.; Mei, Y.; Ouellet, J. L.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. [Bari, G.; Deninno, M. M.; Moggi, N.; Zucchelli, S.] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy. [Beeman, J.; Haller, E. E.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Bellini, F.; Cardani, L.; Cosmelli, C.; Ferroni, F.; Piperno, G.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. [Bellini, F.; Cardani, L.; Cosmelli, C.; Dafinei, I.; Ferroni, F.; Morganti, S.; Orio, F.; Pettinacci, V.; Piperno, G.; Tomei, C.; Vignati, M.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy. [Bersani, A.; Di Domizio, S.; Fernandes, G.; Pallavicini, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. [Biassoni, M.; Brofferio, C.; Capelli, S.; Carrettoni, M.; Chiesa, D.; Clemenza, M.; Faverzani, M.; Ferri, E.; Fiorini, E.; Giachero, A.; Gironi, L.; Gotti, C.; Maiano, C.; Maino, M.; Nucciotti, A.; Pavan, M.; Sala, E.; Sisti, M.; Terranova, F.; Zanotti, L.] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy. [Biassoni, M.; Brofferio, C.; Capelli, S.; Carbone, L.; Carrettoni, M.; Chiesa, D.; Clemenza, M.; Cremonesi, O.; Datskov, V.; Faverzani, M.; Ferri, E.; Fiorini, E.; Freedman, S. J.; Giachero, A.; Gironi, L.; Gotti, C.; Maiano, C.; Maino, M.; Nucciotti, A.; Pavan, M.; Pessina, G.; Previtali, E.; Rusconi, C.; Sala, E.; Sisti, M.; Terranova, F.; Zanotti, L.] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy. [Cai, X. Z.; Cao, X. G.; Fang, D. Q.; Li, Y. L.; Ma, Y. G.; Tian, W. D.; Wang, H. W.] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. [Copello, S.; Di Domizio, S.; Fernandes, G.; Pallavicini, M.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. [Dally, A.; Ejzak, L.; Wielgus, L.; Wise, T.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Franceschi, M. A.; Ligi, C.; Napolitano, T.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Roma, Italy. [Giuliani, A.; Tenconi, M.] Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France. [Gutierrez, T. D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA. [Haller, E. E.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Heeger, K. M.; Maruyama, R. H.; Wise, T.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Huang, H. Z.; Liu, X.; Trentalange, S.; Winslow, L. A.; Zhu, B. X.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Kadel, R.; Kolomensky, Yu. G.] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. [Kazkaz, K.; Norman, E. B.; Pedretti, M.; Sangiorgio, S.; Scielzo, N. D.; Wang, B. S.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Martinez, M.] Univ Zaragoza, Lab Fis Nucl & Astroparticulas, E-50009 Zaragoza, Spain. [Nones, C.] CEA Saclay, Serv Phys Particules, F-91191 Gif Sur Yvette, France. [Norman, E. B.; Wang, B. S.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [Smith, A. R.] Lawrence Berkeley Natl Lab, EH & S Div, Berkeley, CA 94720 USA. [Taffarello, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. [Ventura, G.] Univ Florence, Dipartimento Fis, I-50125 Florence, Italy. [Ventura, G.] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy. [Woodcraft, A.] Univ Edinburgh, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland. [Zucchelli, S.] Univ Bologna, Dipartimento Fis, I-40127 Bologna, Italy. RP Cremonesi, O (reprint author), Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy. EM cuore-spokesperson@lngs.infn.it RI Chiesa, Davide/H-7240-2014; Nucciotti, Angelo/I-8888-2012; Giachero, Andrea/I-1081-2013; Ligi, Carlo/M-4007-2016; Martinez, Maria/K-4827-2012; Gironi, Luca/P-2860-2016; Pattavina, Luca/I-7498-2015; capelli, silvia/G-5168-2012; Bellini, Fabio/D-1055-2009; Ma, Yu-Gang/M-8122-2013; Casali, Nicola/C-9475-2017 OI Chiesa, Davide/0000-0003-1978-1727; pavan, maura/0000-0002-9723-7834; Nucciotti, Angelo/0000-0002-8458-1556; Giachero, Andrea/0000-0003-0493-695X; Ligi, Carlo/0000-0001-7943-7704; Martinez, Maria/0000-0002-9043-4691; Gironi, Luca/0000-0003-2019-0967; Pattavina, Luca/0000-0003-4192-849X; capelli, silvia/0000-0002-0300-2752; Bellini, Fabio/0000-0002-2936-660X; Ma, Yu-Gang/0000-0002-0233-9900; Casali, Nicola/0000-0003-3669-8247 NR 50 TC 0 Z9 0 U1 5 U2 6 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 241 EP 250 DI 10.1016/j.phpro.2014.12.039 PG 10 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900035 ER PT S AU Mertens, S AF Mertens, Susanne CA KATRIN Collaboration BE Haxton, W Avignone, F TI Status of the KATRIN Experiment and prospects to search for keV-mass sterile neutrinos in tritium beta-decay SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE Neutrino mass; Sterile Neutrinos; Warm Dark Matter; Low Energy Physics; Low Background; Tritium beta decay; MAC-E Filter ID SPECTROMETER; ELECTRONS AB In this contribution the current status and future perspectives of the Karlsruhe Tritium Neutrino (KATRIN) Experiment are presented. The prime goal of this single beta-decay experiment is to probe the absolute neutrino mass scale with a sensitivity of 200 meV (90% CL). We discuss first results of the recent main spectrometer commissioning measurements, successfully verifying the spectrometer's basic vacuum, transmission and background properties. We also discuss the prospects of making use of the KATRIN tritium source, to search for sterile neutrinos in the multi-keV mass range constituting a classical candidate for Warm Dark Matter. Due to the very high source luminosity, a statistical sensitivity down to active-sterile mixing angles of sin(2)theta < 1 . 10(-7) (90% CL) could be reached. C1 [Mertens, Susanne; KATRIN Collaboration] Lawrence Berkeley Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA. RP Mertens, S (reprint author), Lawrence Berkeley Lab, Inst Nucl & Particle Astrophys, Berkeley, CA 94720 USA. NR 34 TC 7 Z9 7 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 267 EP 273 DI 10.1016/j.phpro.2014.12.043 PG 7 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900039 ER PT S AU Vignati, M Aguirre, CP Artusa, DR Avignone, FT Azzolini, O Balata, M Banks, TI Bari, G Beeman, J Bellini, F Bersani, A Biassoni, M Brofferio, C Bucci, C Cai, XZ Camacho, A Canonica, L Cao, X Capelli, S Carbone, L Cardani, L Carrettoni, M Casali, N Chiesa, D Chott, N Clemenza, M Cosmelli, C Cremonesi, O Creswick, RJ Dafinei, I Dally, A Datskov, V De Biasi, A Deninno, MM Di Domizio, S di Vacri, ML Ejzak, L Fang, DQ Farach, HA Faverzani, M Fernandes, G Ferri, E Ferroni, F Fiorini, E Franceschi, MA Freedman, SJ Fujikawa, BK Giachero, A Gironi, L Giuliani, A Goett, J Gorla, P Gotti, C Gutierrez, TD Haller, EE Han, K Heeger, KM Hennings-Yeomans, R Huang, HZ Kadel, R Kazkaz, K Keppel, G Kolomensky, YG Li, YL Ligi, C Lim, KE Liu, X Ma, YG Maiano, C Maino, M Martinez, M Maruyama, RH Mei, Y Moggi, N Morganti, S Napolitano, T Nisi, S Nones, C Norman, EB Nucciotti, A O'Donnell, T Orio, F Orlandi, D Ouellet, JL Pallavicini, M Palmieri, V Pattavina, L Pavan, M Pedretti, M Pessina, G Piperno, G Pira, C Pirro, S Previtali, E Rampazzo, V Rosenfeld, C Rusconi, C Sala, E Sangiorgio, S Scielzo, ND Sisti, M Smith, AR Taffarello, L Tenconi, M Terranova, F Tian, WD Tomei, C Trentalange, S Ventura, G Wang, BS Wang, HW Wielgus, L Wilson, J Winslow, LA Wise, T Woodcraft, A Zanotti, L Zarra, C Zhu, BX Zucchelli, S AF Vignati, M. Aguirre, C. P. Artusa, D. R. Avignone, F. T., III Azzolini, O. Balata, M. Banks, T. I. Bari, G. Beeman, J. Bellini, F. Bersani, A. Biassoni, M. Brofferio, C. Bucci, C. Cai, X. Z. Camacho, A. Canonica, L. Cao, X. Capelli, S. Carbone, L. Cardani, L. Carrettoni, M. Casali, N. Chiesa, D. Chott, N. Clemenza, M. Cosmelli, C. Cremonesi, O. Creswick, R. J. Dafinei, I. Dally, A. Datskov, V. De Biasi, A. Deninno, M. M. Di Domizio, S. di Vacri, M. L. Ejzak, L. Fang, D. Q. Farach, H. A. Faverzani, M. Fernandes, G. Ferri, E. Ferroni, F. Fiorini, E. Franceschi, M. A. Freedman, S. J. Fujikawa, B. K. Giachero, A. Gironi, L. Giuliani, A. Goett, J. Gorla, P. Gotti, C. Gutierrez, T. D. Haller, E. E. Han, K. Heeger, K. M. Hennings-Yeomans, R. Huang, H. Z. Kadel, R. Kazkaz, K. Keppel, G. Kolomensky, Yu. G. Li, Y. L. Ligi, C. Lim, K. E. Liu, X. Ma, Y. G. Maiano, C. Maino, M. Martinez, M. Maruyama, R. H. Mei, Y. Moggi, N. Morganti, S. Napolitano, T. Nisi, S. Nones, C. Norman, E. B. Nucciotti, A. O'Donnell, T. Orio, F. Orlandi, D. Ouellet, J. L. Pallavicini, M. Palmieri, V. Pattavina, L. Pavan, M. Pedretti, M. Pessina, G. Piperno, G. Pira, C. Pirro, S. Previtali, E. Rampazzo, V. Rosenfeld, C. Rusconi, C. Sala, E. Sangiorgio, S. Scielzo, N. D. Sisti, M. Smith, A. R. Taffarello, L. Tenconi, M. Terranova, F. Tian, W. D. Tomei, C. Trentalange, S. Ventura, G. Wang, B. S. Wang, H. W. Wielgus, L. Wilson, J. Winslow, L. A. Wise, T. Woodcraft, A. Zanotti, L. Zarra, C. Zhu, B. X. Zucchelli, S. BE Haxton, W Avignone, F TI First data from CUORE-0 SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab ID CONTAMINATION; BOLOMETERS; VALIDATION; SIGNALS AB CUORE-0 is an experiment built to test and demonstrate the performance of the upcoming CUORE experiment. Composed of 52 TeO2 bolometers of 750 g each, it is expected to reach a sensitivity to the 0 nu beta beta half-life of Te-130 around 3 . 10(24) y in one year of live time. We present the first data, corresponding to an exposure of 7.1 kg y. An analysis of the background indicates that the CUORE sensitivity goal is within reach, validating our techniques to reduce the alpha radioactivity of the detector. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Vignati, M.; Bellini, F.; Cardani, L.; Cosmelli, C.; Ferroni, F.; Piperno, G.] Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. [Vignati, M.; Bellini, F.; Cardani, L.; Cosmelli, C.; Dafinei, I.; Ferroni, F.; Morganti, S.; Orio, F.; Piperno, G.; Tomei, C.] Ist Nazl Fis Nucl, Sez Roma, I-00185 Rome, Italy. [Aguirre, C. P.; Artusa, D. R.; Avignone, F. T., III; Chott, N.; Creswick, R. J.; Farach, H. A.; Keppel, G.; Rosenfeld, C.; Wilson, J.] Univ South Carolina, Dept Phys & Astron, Columbia, SC 29208 USA. [Artusa, D. R.; Balata, M.; Banks, T. I.; Bucci, C.; Canonica, L.; Casali, N.; di Vacri, M. L.; Goett, J.; Gorla, P.; Nisi, S.; Orlandi, D.; Pattavina, L.; Pirro, S.; Zarra, C.] Ist Nazl Fis Nucl, Lab Nazl Gran Sasso, I-67010 Laquila, Italy. [Azzolini, O.; Camacho, A.; De Biasi, A.; Palmieri, V.; Pira, C.; Rampazzo, V.] Ist Nazl Fis Nucl, Lab Nazl Legnaro, I-35020 Legnaro, Padova, Italy. [Banks, T. I.; Freedman, S. J.; Hennings-Yeomans, R.; Kolomensky, Yu. G.; O'Donnell, T.; Ouellet, J. L.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Banks, T. I.; Freedman, S. J.; Fujikawa, B. K.; Han, K.; Mei, Y.; Ouellet, J. L.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. [Bari, G.; Deninno, M. M.; Moggi, N.; Zucchelli, S.] Ist Nazl Fis Nucl, Sez Bologna, I-40127 Bologna, Italy. [Beeman, J.; Haller, E. E.] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. [Bersani, A.; Di Domizio, S.; Fernandes, G.; Pallavicini, M.] Ist Nazl Fis Nucl, Sez Genova, I-16146 Genoa, Italy. [Biassoni, M.; Brofferio, C.; Capelli, S.; Carrettoni, M.; Chiesa, D.; Clemenza, M.; Faverzani, M.; Ferri, E.; Fiorini, E.; Giachero, A.; Gironi, L.; Gotti, C.; Maiano, C.; Maino, M.; Nucciotti, A.; Pavan, M.; Sala, E.; Sisti, M.; Zanotti, L.] Univ Milano Bicocca, Dipartimento Fis, I-20126 Milan, Italy. [Biassoni, M.; Brofferio, C.; Capelli, S.; Carbone, L.; Carrettoni, M.; Chiesa, D.; Clemenza, M.; Cremonesi, O.; Datskov, V.; Faverzani, M.; Ferri, E.; Fiorini, E.; Freedman, S. J.; Giachero, A.; Gironi, L.; Gotti, C.; Maiano, C.; Maino, M.; Nucciotti, A.; Pavan, M.; Pessina, G.; Previtali, E.; Rusconi, C.; Sala, E.; Sisti, M.; Terranova, F.; Zanotti, L.] Ist Nazl Fis Nucl, Sez Milano Bicocca, I-20126 Milan, Italy. [Cai, X. Z.; Cao, X.; Fang, D. Q.; Li, Y. L.; Ma, Y. G.; Tian, W. D.; Wang, H. W.] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai 201800, Peoples R China. [Dally, A.; Ejzak, L.; Wielgus, L.; Wise, T.] Univ Wisconsin, Dept Phys, Madison, WI 53706 USA. [Di Domizio, S.; Fernandes, G.; Pallavicini, M.] Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy. [Franceschi, M. A.; Ligi, C.; Napolitano, T.] Ist Nazl Fis Nucl, Lab Nazl Frascati, I-00044 Frascati, Roma, Italy. [Giuliani, A.; Tenconi, M.] Ctr Spectrometrie Nucl & Spectrometrie Masse, F-91405 Orsay, France. [Gutierrez, T. D.] Calif Polytech State Univ San Luis Obispo, Dept Phys, San Luis Obispo, CA 93407 USA. [Haller, E. E.] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA. [Heeger, K. M.; Lim, K. E.; Maruyama, R. H.; Wise, T.] Yale Univ, Dept Phys, New Haven, CT 06520 USA. [Huang, H. Z.; Liu, X.; Trentalange, S.; Winslow, L. A.; Zhu, B. X.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Kadel, R.; Kolomensky, Yu. G.] Lawrence Berkeley Natl Lab, Div Phys, Berkeley, CA 94720 USA. [Kazkaz, K.; Norman, E. B.; Pedretti, M.; Sangiorgio, S.; Scielzo, N. D.; Wang, B. S.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Martinez, M.] Univ Zaragoza, Lab Fis Nucl & Astroparticulas, E-50009 Zaragoza, Spain. [Nones, C.] CEA Saclay, Serv Phys Particules, F-91191 Gif Sur Yvette, France. [Norman, E. B.; Wang, B. S.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [Smith, A. R.] Lawrence Berkeley Natl Lab, EH & S Div, Berkeley, CA 94720 USA. [Taffarello, L.] Ist Nazl Fis Nucl, Sez Padova, I-35131 Padua, Italy. [Ventura, G.] Univ Florence, Dipartimento Fis, I-50125 Florence, Italy. [Ventura, G.] Ist Nazl Fis Nucl, Sez Firenze, I-50125 Florence, Italy. [Woodcraft, A.] Univ Edinburgh, Inst Astron, SUPA, Edinburgh EH9 3HJ, Midlothian, Scotland. [Zucchelli, S.] Univ Bologna, Dipartimento Fis, I-40127 Bologna, Italy. RP Vignati, M (reprint author), Univ Roma La Sapienza, Dipartimento Fis, I-00185 Rome, Italy. RI Di Domizio, Sergio/L-6378-2014; Ligi, Carlo/M-4007-2016; Martinez, Maria/K-4827-2012; Gironi, Luca/P-2860-2016; Pattavina, Luca/I-7498-2015; Bellini, Fabio/D-1055-2009; Chiesa, Davide/H-7240-2014; capelli, silvia/G-5168-2012; Giachero, Andrea/I-1081-2013; Nucciotti, Angelo/I-8888-2012; Casali, Nicola/C-9475-2017 OI Di Domizio, Sergio/0000-0003-2863-5895; Cardani, Laura/0000-0001-5410-118X; pavan, maura/0000-0002-9723-7834; Gotti, Claudio/0000-0003-2501-9608; Ligi, Carlo/0000-0001-7943-7704; Martinez, Maria/0000-0002-9043-4691; Gironi, Luca/0000-0003-2019-0967; Pattavina, Luca/0000-0003-4192-849X; Bellini, Fabio/0000-0002-2936-660X; Chiesa, Davide/0000-0003-1978-1727; capelli, silvia/0000-0002-0300-2752; Giachero, Andrea/0000-0003-0493-695X; Nucciotti, Angelo/0000-0002-8458-1556; Casali, Nicola/0000-0003-3669-8247 NR 19 TC 0 Z9 0 U1 5 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 289 EP 294 DI 10.1016/j.phpro.2014.12.047 PG 6 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900043 ER PT S AU Jaffe, DE AF Jaffe, David E. BE Haxton, W Avignone, F TI Future Reactor Neutrino Experiments (RRNOLD) SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE mass hierarchy; IBD; JUNO; RENO-50; neutrino; RRNOLD AB The prospects for future reactor neutrino experiments that would use tens of kilotons of liquid scintillator with a similar to 50 km baseline are discussed. These experiments are generically dubbed "RRNOLD" for Radical Reactor Neutrino Oscillation Liquid scintillator Detector experiment. Such experiments are designed to resolve the neutrino mass hierarchy and make sub-percent measurements sin(2) theta(12), Delta m(23)(2) and Delta m(12)(2). RRNOLD would also be sensitive to neutrinos from other sources and have notable sensitivity to proton decay. C1 [Jaffe, David E.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Jaffe, DE (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. NR 19 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 319 EP 322 DI 10.1016/j.phpro.2014.12.051 PG 4 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900047 ER PT S AU Ling, JJ AF Ling, Jiajie CA Daya Bay Collaboration BE Haxton, W Avignone, F TI Daya Bay Reactor Antineutrino Experiment SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE neutrino oscillation; neutrino mixing; theta(13); spectrum; reactor; Daya Bay AB With 217 days of data-taking, using six antineutrino detectors deployed in three experimental halls near the Daya Bay Nuclear Power Plant complex, the Daya Bay experiment has obtainted sin(2) 2 theta(13) = 0.090(-0.009)(+0.008) from the rate and energy spectra analysis under the three-neutrino framework. In addition, the value of effective mass-squared difference vertical bar Delta m(ee)(2)vertical bar = (2.59(-0.20)(+0.19)) x 10(-3) eV(2) is directly measured through (nu) over bar (e) disappearance channel for the first time, which is consistent with the vertical bar Delta m(mu mu)(2)vertical bar measured by muon neutrino disappearance channel. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Ling, Jiajie] Brookhaven Natl Lab, Dept Phys, POB 5000, Upton, NY 11973 USA. [Ling, Jiajie] Univ Illinois, Dept Phys, Urbana, IL 61801 USA. RP Ling, JJ (reprint author), Brookhaven Natl Lab, Dept Phys, POB 5000, Upton, NY 11973 USA. EM jjling@illinois.edu RI Ling, Jiajie/I-9173-2014 OI Ling, Jiajie/0000-0003-2982-0670 NR 19 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 323 EP 330 DI 10.1016/j.phpro.2014.12.052 PG 8 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900048 ER PT S AU Liu, QG AF Liu, Qiuguang BE Haxton, W Avignone, F TI The CAPTAIN Liquid Argon Neutrino Experiment SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE Liquid argon time projection chamber; neutrino energy reconstruction; neutrino oscillation; supernova neutrino AB The CAPTAIN liquid argon experiment is designed to make measurements of scientific importance to long-baseline neutrino physics and physics topics that will be explored by large underground detectors. The experiment employs two detectors - a primary detector with approximately 10-ton of liquid argon that will be deployed at different facilities for physics measurements and a prototype detector with 2-ton of liquid argon for configuration testing. The physics programs for CAPTAIN include measuring neutron interactions at Los Alamos Neutron Science Center, measuring neutrino interactions in medium energy regime (1.5-5 GeV) at Fermilab's NuMI beam, and measuring neutrino interactions in low energy regime (< 50 MeV) at stopped pion sources for supernova neutrino studies. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Liu, Qiuguang] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Liu, QG (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 3 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 483 EP 487 DI 10.1016/j.phpro.2014.12.111 PG 5 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900069 ER PT S AU Lesko, KT AF Lesko, K. T. BE Haxton, W Avignone, F TI The Sanford Underground Research Facility at Homestake (SURF) SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab ID DUSEL; FLUX AB The former Homestake gold mine in Lead, South Dakota is being transformed into a dedicated laboratory to pursue underground research in rare-process physics, as well as offering research opportunities in other disciplines. A key component of the Sanford Underground Research Facility (SURF) is the Davis Campus, which is in operation at the 4850-foot level (4300 m.w.e) and currently hosts three projects: the LUX dark matter experiment, the MAJORANA DEMONSTRATOR neutrinoless double-beta decay experiment and the Berkeley and CUBED low-background counters. Plans for possible future experiments at SURF are well underway and include long baseline neutrino oscillation experiments, future dark matter experiments as well as nuclear astrophysics accelerators. Facility upgrades to accommodate some of these future projects have already started. SURF is a dedicated facility with significant expansion capability. These plans include a Generation-2 Dark Matter experiment and the US flagship neutrino experiment, LBNE. (C) 2015 Published by Elsevier B.V. C1 [Lesko, K. T.] Lawrence Berkeley Natl Lab, Div Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RP Lesko, KT (reprint author), Lawrence Berkeley Natl Lab, Div Phys, 1 Cyclotron Rd, Berkeley, CA 94720 USA. NR 21 TC 0 Z9 0 U1 2 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 542 EP 551 DI 10.1016/j.phpro.2014.12.001 PG 10 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900077 ER PT S AU Li, JM Ji, XD Haxton, W Wang, JSY AF Li, Jianmin Ji, Xiangdong Haxton, Wick Wang, Joseph S. Y. BE Haxton, W Avignone, F TI The second-phase development of the China JinPing underground Laboratory SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE Deep Underground Laboratory; Physics Sensors for Dectecting Rare Events; Geophysics-Engineering Miulti-disciplinary Studies ID EVOLUTION; RUSTREL AB During 2013-2015 an expansion of the China JinPing underground Laboratory (CJPL) will be undertaken along a main branch of a bypass tunnel in the JinPing tunnel complex. This second phase of CJPL will increase laboratory space to approximately 96,000 m(3), which can be compared to the existing CJPL-I volume of similar to 4,000 m(3). One design configuration has eight additional hall spaces, each over 60 m long and approximately 12 m in width, with overburdens of about 2.4 km of rock, oriented parallel to and away from the main water transport and auto traffic tunnels. There are additional possibilities for further expansions at a nearby second bypass tunnel and along the entrance and exit branches of both bypass tunnels, potentially leading to an expanded CJPL comparable in size to Gran Sasso. Concurrent with the excavation activities, planning is underway for dark matter and other rare-event detectors, as well as for geophysics/engineering and other coupled multi-disciplinary sensors. In the town meeting on 8 September, 2013 at Asilomar, CA, associated with the 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP), presentations and panel discussions addressed plans for one-ton expansions of the current CJPL germanium detector array of the China Darkmatter EXperiment (CDEX) collaboration and of the duel-phase xenon detector of the Panda-X collaboration, as well as possible new detector initiatives for dark matter studies, low-energy solar neutrino detection, neutrinoless double beta searches, and geoneutrinos. JinPing was also discussed as a site for a low-energy nuclear astrophysics accelerator. Geophysics/engineering opportunities include acoustic and micro-seismic monitoring of rock bursts during and after excavation, coupled-process in situ measurements, local, regional, and global monitoring of seismically induced radon emission, and electromagnetic signals. Additional ideas and projects will likely be developed in the next few years, driven by China's domestic needs and by international experiments requiring access to very great depths. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Li, Jianmin] Tsinghua Univ, Beijing, Peoples R China. [Ji, Xiangdong] Univ Maryland, College Pk, MD 20742 USA. [Ji, Xiangdong] Shanghai Jiao Tong Univ, Shanghai, Peoples R China. [Haxton, Wick] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Haxton, Wick; Wang, Joseph S. Y.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Wang, JSY (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM jswang@lbl.gov NR 38 TC 7 Z9 8 U1 2 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 576 EP 585 DI 10.1016/j.phpro.2014.12.055 PG 10 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900081 ER PT S AU Abgrall, N Aguayo, E Avignone, FT Barabash, AS Bertrand, FE Boswell, M Brudanin, V Busch, M Byram, D Caldwell, AS Chan, YD Christofferson, CD Combs, DC Cuesta, C Detwiler, JA Doe, PJ Efremenko, Y Egorov, V Ejiri, H Elliott, SR Fast, JE Finnerty, P Fraenkle, FM Galindo-Uribarri, A Giovanetti, GK Goett, J Green, MP Gruszko, J Guiseppe, VE Gusev, K Hallin, AL Hazama, R Hegai, A Henning, R Hoppe, EW Howard, S Howe, MA Keeter, KJ Kidd, MF Kochetov, O Konovalov, SI Kouzes, RT LaFerriere, BD Leon, J Leviner, LE Loach, JC MacMullin, J MacMullin, S Martin, RD Meijer, S Mertens, S Nomachi, M Orrell, JL O'Shaughnessy, C Overman, NR Phillips, DG Poon, AWP Pushkin, K Radford, DC Rager, J Rielage, K Robertson, RGH Romero-Romero, E Ronquest, MC Schubert, AG Shanks, B Shima, T Shirchenko, M Snavely, KJ Snyder, N Suriano, AM Thompson, J Timkin, V Tornow, W Trimble, JE Varner, RL Vasilyev, S Vetter, K Vorren, K White, BR Wilkerson, JF Wiseman, C Xu, W Yakushev, E Young, AR Yu, CH Yumatov, V AF Abgrall, N. Aguayo, E. Avignone, F. T., III Barabash, A. S. Bertrand, F. E. Boswell, M. Brudanin, V. Busch, M. Byram, D. Caldwell, A. S. Chan, Y-D. Christofferson, C. D. Combs, D. C. Cuesta, C. Detwiler, J. A. Doe, P. J. Efremenko, Yu. Egorov, V. Ejiri, H. Elliott, S. R. Fast, J. E. Finnerty, P. Fraenkle, F. M. Galindo-Uribarri, A. Giovanetti, G. K. Goett, J. Green, M. P. Gruszko, J. Guiseppe, V. E. Gusev, K. Hallin, A. L. Hazama, R. Hegai, A. Henning, R. Hoppe, E. W. Howard, S. Howe, M. A. Keeter, K. J. Kidd, M. F. Kochetov, O. Konovalov, S. I. Kouzes, R. T. LaFerriere, B. D. Leon, J. Leviner, L. E. Loach, J. C. MacMullin, J. MacMullin, S. Martin, R. D. Meijer, S. Mertens, S. Nomachi, M. Orrell, J. L. O'Shaughnessy, C. Overman, N. R. Phillips, D. G., II Poon, A. W. P. Pushkin, K. Radford, D. C. Rager, J. Rielage, K. Robertson, R. G. H. Romero-Romero, E. Ronquest, M. C. Schubert, A. G. Shanks, B. Shima, T. Shirchenko, M. Snavely, K. J. Snyder, N. Suriano, A. M. Thompson, J. Timkin, V. Tornow, W. Trimble, J. E. Varner, R. L. Vasilyev, S. Vetter, K. Vorren, K. White, B. R. Wilkerson, J. F. Wiseman, C. Xu, W. Yakushev, E. Young, A. R. Yu, C. -H. Yumatov, V. BE Haxton, W Avignone, F TI The MAJORANA low-noise low-background front-end electronics SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE neutrinoless double beta decay; low noise; low background; resistive-feedback front-end; charge sensitive amplifer AB The MAJORANA DEMONSTRATOR will search for the neutrinoless double beta decay (beta beta(0 nu)) of the isotope Ge-76 with a mixed array of enriched and natural germanium detectors. In view of the next generation of tonne-scale germaniumbased beta beta(0 nu)-decay searches, a major goal of the MAJORANA DEMONSTRATOR is to demonstrate a path forward to achieving a background rate at or below 1 cnt/(ROI-t-y) in the 4 keV region of interest (ROI) around the 2039-keV Q-value of the Ge-76 beta beta(0 nu)-decay. Such a requirement on the background level significantly constrains the design of the readout electronics, which is further driven by noise and energy resolution performances. We present here the low-noise lowbackground front-end electronics developed for the low-capacitance p-type point contact (P-PC) germanium detectors of the Majorana Demonstrator. This resistive-feedback front-end, specifically designed to have low mass, is fabricated on a radioassayed fused-silica substrate where the feedback resistor consists of a sputtered thin film of high purity amorphous germanium and the feedback capacitor is based on the capacitance between gold conductive traces. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Abgrall, N.; Chan, Y-D.; Hegai, A.; Mertens, S.; Poon, A. W. P.; Vetter, K.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. [Aguayo, E.; Fast, J. E.; Hoppe, E. W.; Kouzes, R. T.; LaFerriere, B. D.; Orrell, J. L.; Overman, N. R.] Pacific Northwest Natl Lab, Richland, WA USA. [Avignone, F. T., III; Guiseppe, V. E.; Wiseman, C.] Univ South Carolina, Dept Phys & Astron, Columbia, SC USA. [Avignone, F. T., III; Bertrand, F. E.; Galindo-Uribarri, A.; Green, M. P.; Radford, D. C.; Romero-Romero, E.; Varner, R. L.; White, B. R.; Wilkerson, J. F.; Yu, C. -H.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Barabash, A. S.; Konovalov, S. I.; Yumatov, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia. [Boswell, M.; Elliott, S. R.; Goett, J.; Rielage, K.; Ronquest, M. C.; Xu, W.] Los Alamos Natl Lab, Los Alamos, NM USA. [Brudanin, V.; Egorov, V.; Gusev, K.; Kochetov, O.; Shirchenko, M.; Timkin, V.; Yakushev, E.] Joint Inst Nucl Res, Dubna, Russia. [Busch, M.; Tornow, W.] Duke Univ, Dept Phys, Durham, NC 27706 USA. [Busch, M.; Combs, D. C.; Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; Leviner, L. E.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Phillips, D. G., II; Rager, J.; Shanks, B.; Snavely, K. J.; Tornow, W.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.; Young, A. R.] Triangle Univ Nucl Lab, Durham, NC 27706 USA. [Byram, D.; Martin, R. D.; Pushkin, K.; Snyder, N.] Univ South Dakota, Dept Phys, Vermillion, SD USA. [Caldwell, A. S.; Christofferson, C. D.; Howard, S.; Suriano, A. M.; Thompson, J.] South Dakota Sch Mines & Technol, Rapid City, SD USA. [Combs, D. C.; Hegai, A.; Leviner, L. E.; Phillips, D. G., II; Young, A. R.] North Carolina State Univ, Dept Phys, Raleigh, NC USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Efremenko, Yu.; Romero-Romero, E.; Vasilyev, S.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Res Ctr Nucl Phys, Osaka, Japan. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Dept Phys, Osaka, Japan. [Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Rager, J.; Shanks, B.; Snavely, K. J.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC USA. [Hallin, A. L.] Univ Alberta, Ctr Particle Phys, Edmonton, AB, Canada. [Keeter, K. J.; Thompson, J.] Black Hills State Univ, Dept Phys, Spearfish, SD 57799 USA. [Kidd, M. F.] Tennessee Technol Univ, Cookeville, TN USA. [Loach, J. C.] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China. Univ Tubingen, Tubingen, Germany. [Vetter, K.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Abgrall, N (reprint author), Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA 94720 USA. RI Barabash, Alexander/S-8851-2016; Cuesta, Clara/L-5466-2014; OI Cuesta, Clara/0000-0003-1190-7233; Rielage, Keith/0000-0002-7392-7152 NR 2 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 654 EP 657 DI 10.1016/j.phpro.2014.12.066 PG 4 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900092 ER PT S AU Bradley, A Akerib, DS Araujo, HM Bai, X Bailey, AJ Balajthy, J Bernard, E Bernstein, A Byram, D Cahn, SB Carmona-Benitez, MC Chan, C Chapman, JJ Chiller, AA Chiller, C Coffey, T Currie, A de Viveiros, L Dobi, A Dobson, J Druszkiewicz, E Edwards, B Faham, CH Fiorucci, S Flores, C Gaitskell, RJ Gehman, VM Ghag, C Gibson, KR Gilchriese, MGD Hall, C Hertel, SA Horn, M Huang, DQ Ihm, M Jacobsen, RG Kazkaz, K Knoche, R Larsen, NA Lee, C Lindote, A Lopes, MI Malling, DC Mannino, R McKinsey, DN Mei, DM Mock, J Moongweluwan, M Morad, J Murphy, ASJ Nehrkorn, C Nelson, H Neves, F Ott, RA Pangilinan, M Parker, PD Pease, EK Pech, K Phelps, P Reichhart, L Shutt, T Silva, C Solovov, VN Sorensen, P O'Sullivan, K Sumner, TJ Szydagis, M Taylor, D Tennyson, B Tiedt, DR Tripathi, M Uvarov, S Verbus, JR Walsh, N Webb, R White, JT Witherell, MS Wolfs, FLH Woods, M Zhang, C AF Bradley, A. Akerib, D. S. Araujo, H. M. Bai, X. Bailey, A. J. Balajthy, J. Bernard, E. Bernstein, A. Byram, D. Cahn, S. B. Carmona-Benitez, M. C. Chan, C. Chapman, J. J. Chiller, A. A. Chiller, C. Coffey, T. Currie, A. de Viveiros, L. Dobi, A. Dobson, J. Druszkiewicz, E. Edwards, B. Faham, C. H. Fiorucci, S. Flores, C. Gaitskell, R. J. Gehman, V. M. Ghag, C. Gibson, K. R. Gilchriese, M. G. D. Hall, C. Hertel, S. A. Horn, M. Huang, D. Q. Ihm, M. Jacobsen, R. G. Kazkaz, K. Knoche, R. Larsen, N. A. Lee, C. Lindote, A. Lopes, M. I. Malling, D. C. Mannino, R. McKinsey, D. N. Mei, D. -M. Mock, J. Moongweluwan, M. Morad, J. Murphy, A. St. J. Nehrkorn, C. Nelson, H. Neves, F. Ott, R. A. Pangilinan, M. Parker, P. D. Pease, E. K. Pech, K. Phelps, P. Reichhart, L. Shutt, T. Silva, C. Solovov, V. N. Sorensen, P. O'Sullivan, K. Sumner, T. J. Szydagis, M. Taylor, D. Tennyson, B. Tiedt, D. R. Tripathi, M. Uvarov, S. Verbus, J. R. Walsh, N. Webb, R. White, J. T. Witherell, M. S. Wolfs, F. L. H. Woods, M. Zhang, C. BE Haxton, W Avignone, F TI Radon-Related Backgrounds in the LUX Dark Matter Search SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE dark matter; liquid noble detectors; xenon; radon; background characterization AB The LUX detector is currently in operation at the Davis Campus at the 4850' level of the Sanford Underground Research Facility (SURF) in Lead, SD to directly search for WIMP dark matter. Knowing the type and rate of backgrounds is critical in a rare, low energy event search, and LUX was designed, constructed, and deployed to mitigate backgrounds, both internal and external. An important internal background are decays of radon and its daughters. These consist of alpha decays, which are easily tagged and are a tracer of certain backgrounds, and beta decays, some of which are not as readily tagged and present a background for the WIMP search. We report on studies of alpha decay and discuss implications for the WIMP search. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Bradley, A.; Akerib, D. S.; Coffey, T.; Gibson, K. R.; Lee, C.; Pech, K.; Phelps, P.; Shutt, T.] Case Western Reserve Univ, Dept Phys, 10900 Euclid Ave, Cleveland, OH 44106 USA. [Araujo, H. M.; Bailey, A. J.; Currie, A.; Sumner, T. J.] Imperial Coll London, High Energy Phys, Blackett Lab, London SW7 2BZ, England. [Bai, X.; Tiedt, D. R.] South Dakota Sch Mines & Technol, Rapid City, SD 57701 USA. [Balajthy, J.; Dobi, A.; Hall, C.; Knoche, R.; Zhang, C.] Univ Maryland, Dept Phys, College Pk, MD 20742 USA. [Bernard, E.; Cahn, S. B.; Edwards, B.; Hertel, S. A.; Horn, M.; Larsen, N. A.; McKinsey, D. N.; Parker, P. D.; Pease, E. K.; O'Sullivan, K.; Tennyson, B.] Yale Univ, Dept Phys, New Haven, CT 06511 USA. [Bernstein, A.; Kazkaz, K.; Sorensen, P.] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. [Byram, D.; Chiller, A. A.; Chiller, C.; Mei, D. -M.] Univ South Dakota, Dept Phys, Vermillion, SD 57069 USA. [Carmona-Benitez, M. C.; Nehrkorn, C.; Nelson, H.; Witherell, M. S.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Chan, C.; Chapman, J. J.; Fiorucci, S.; Gaitskell, R. J.; Huang, D. Q.; Malling, D. C.; Pangilinan, M.; Verbus, J. R.] Brown Univ, Dept Phys, Providence, RI 02912 USA. [de Viveiros, L.; Lindote, A.; Lopes, M. I.; Neves, F.; Silva, C.; Solovov, V. N.] Univ Coimbra, Dept Phys, LIP Coimbra, P-3004516 Coimbra, Portugal. [Dobson, J.; Murphy, A. St. J.] Univ Edinburgh, Sch Phys & Astron, SUPA, Edinburgh EH9 3JZ, Midlothian, Scotland. [Druszkiewicz, E.; Moongweluwan, M.; White, J. T.; Wolfs, F. L. H.] Univ Rochester, Dept Phys & Astron, Rochester, NY 14627 USA. [Faham, C. H.; Gehman, V. M.; Gilchriese, M. G. D.] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Flores, C.; Mock, J.; Morad, J.; Ott, R. A.; Szydagis, M.; Tripathi, M.; Uvarov, S.; Walsh, N.; Woods, M.] Univ Calif Davis, Dept Phys, Davis, CA 95616 USA. [Ghag, C.; Reichhart, L.] UCL, Dept Phys & Astron, London WC1E 6BT, England. [Ihm, M.; Jacobsen, R. G.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Mannino, R.; Webb, R.; White, J. T.] Texas A&M Univ, Dept Phys, College Stn, TX 77843 USA. [Taylor, D.] Sanford Underground Res Facil, South Dakota Sci & Technol Author, Lead, SD 57754 USA. RP Bradley, A (reprint author), Case Western Reserve Univ, Dept Phys, 10900 Euclid Ave, Cleveland, OH 44106 USA. EM awbradley@case.edu OI Murphy, Alexander/0000-0001-8337-4427 NR 8 TC 1 Z9 1 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 658 EP 665 DI 10.1016/j.phpro.2014.12.067 PG 8 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900093 ER PT S AU Kamdin, K AF Kamdin, K. CA SNO Collaboration BE Haxton, W Avignone, F TI Understanding the SNO plus Detector SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE neutrino; neutrinoless double beta decay; liquid scintillator; Tellurium AB SNO+, a large liquid scintillator experiment, is the successor of the Sudbury Neutrino Observatory ( SNO) experiment. The scintillator volume will be loaded with large quantities of Te-130, an isotope that undergoes double beta decay, in order to search for neutrinoless double beta decay. In addition to this search, SNO+ has a broad physics program due to its sensitivity to solar and supernova neutrinos, as well as reactor and geo anti-neutrinos. SNO+ can also place competitive limits on certain modes of invisible nucleon decay during its first phase. The detector is currently undergoing commissioning in preparation for its first phase, in which the detector is filled with ultra pure water. This will be followed by a pure scintillator phase, and then a Tellurium-loaded scintillator phase to search for neutrinoless double beta decay. Here we present the work done to model detector aging, which was first observed during SNO. The aging was found to reduce the optical response of the detector. We also describe early results from electronics calibration of SNO+. (C) 2014 The Authors. Published by Elsevier B.V. C1 [Kamdin, K.] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd Mail Stop 50R5008, Berkeley, CA 94720 USA. Univ Calif Berkeley, Berkeley, CA 94720 USA. RP Kamdin, K (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd Mail Stop 50R5008, Berkeley, CA 94720 USA. EM kkamdin@berkeley.edu NR 3 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 719 EP 723 DI 10.1016/j.phpro.2014.12.087 PG 5 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900102 ER PT S AU Oliveira, CAB Gehman, V Goldschmidt, A Nygren, D Renner, J AF Oliveira, C. A. B. Gehman, V. Goldschmidt, A. Nygren, D. Renner, J. BE Haxton, W Avignone, F TI Measurements of charge and light in Pure High Pressure Xe towards the study of Xe plus TMA mixtures with Dark Matter directionality sensitivity and supra-intrinsic energy resolution for 0 nu beta beta decay searches SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE Dark Matter Directionality; Neutrino Double Beta Decay; High Pressure Gaseous Xenon; Electroluminescence; Penning effect; Energy Resolution ID PROPORTIONAL SCINTILLATION; XENON; KRYPTON; ARGON; GAS AB Trimethylamine ( TMA) may improve the energy resolution of gaseous xenon based detectors for 0 nu beta beta decay searches through the reduction of the Fano factor by the Penning effect. This molecule may also be the key for sensing directionality of nuclear recoils induced by Weakly Interacting Massive Particles ( WIMPs) in monolithic massive ( ton-scale) detectors, without the need of track imaging, by making use of columnar recombination. Nuclear recoil directionality may be the path for a definite discovery of the WIMP nature of Dark Matter. An ionization chamber has been constructed and operated to explore the properties of high pressure gaseous Xe + TMA mixtures for particle detection in rare-event experiments. The ionization, scintillation and electroluminescence ( EL) signals are measured as function of pressure and electric field. We present results for pure xenon at pressures up to 8 bar. This work has been carried out within the context of the NEXT collaboration. Published by Elsevier B.V. C1 [Oliveira, C. A. B.; Gehman, V.; Goldschmidt, A.; Nygren, D.; Renner, J.] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd Mail Stop, Berkeley, CA 94720 USA. RP Oliveira, CAB (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd Mail Stop, Berkeley, CA 94720 USA. NR 12 TC 2 Z9 2 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 742 EP 749 DI 10.1016/j.phpro.2014.12.093 PG 8 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900106 ER PT S AU Renner, J Gehman, VM Goldschmidt, A Oliveira, CAB Nygren, D AF Renner, J. Gehman, V. M. Goldschmidt, A. Oliveira, C. A. B. Nygren, D. CA NEXT Collaboration BE Haxton, W Avignone, F TI Characterization of Nuclear Recoils in High Pressure Xenon Gas: Towards a Simultaneous Search for WIMP Dark Matter and Neutrinoless Double Beta Decay SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE dark matter; high pressure xenon gas; WIMP; neutrinoless double beta decay; nuclear recoils ID NEUTRON SOURCES; SPECTRA AB Xenon has recently been the medium of choice in several large scale detectors searching for WIMP dark matter and neutrinoless double beta decay. Though present-day large scale experiments use liquid xenon, the gas phase offers advantages favorable to both types of searches such as improved intrinsic energy resolution and fewer fluctuations in the partition of deposited energy between scintillation and ionization channels. We recently constructed a high pressure xenon gas TPC as a prototype for the NEXT ( Neutrino Experiment with a Xenon TPC) neutrinoless double beta decay experiment and have demonstrated the feasibility of 0.5% FWHM energy resolution at the Xe-136 double beta Q-value with 3-D tracking capabilities. We now present results from this prototype on the simultaneous observation of scintillation and ionization produced by nuclear recoils at approximately 14 bar pressure. The recoils were produced by neutrons of approximately 2-6 MeV emitted from a radioisotope plutonium-beryllium source, and primary scintillation ( S1) and electroluminescent photons produced by ionization ( S2) were observed. We discuss the potential of gaseous xenon to distinguish between electron and nuclear recoils through the ratio of these two signals S2/S1. From these results combined with the possibility of using columnar recombination to sense nuclear recoil directionality at high pressures we envision a dual-purpose, ton-scale gaseous xenon detector capable of a combined search for WIMP dark matter and neutrinoless double beta decay. This work has been performed within the context of the NEXT collaboration. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Renner, J.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Renner, J.; Gehman, V. M.; Goldschmidt, A.; Oliveira, C. A. B.; Nygren, D.] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RP Renner, J (reprint author), Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. EM jrenner@lbl.gov NR 18 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 766 EP 773 DI 10.1016/j.phpro.2014.12.097 PG 8 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900109 ER PT S AU Smith, AR Thomas, KJ Norman, EB Chan, YD Lesko, KT Hurley, DL AF Smith, A. R. Thomas, K. J. Norman, E. B. Chan, Y. D. Lesko, K. T. Hurley, D. L. BE Haxton, W Avignone, F TI Low Background Counting at LBNL SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab ID NEUTRON-ACTIVATION ANALYSIS; SILICON AB The Low Background Facility ( LBF) at Lawrence Berkeley National Laboratory in Berkeley, California provides low background gamma spectroscopy services to a wide array of experiments and projects. The analysis of samples takes place within two unique facilities; locally within a carefully-constructed, low background cave and remotely at an underground location that historically has operated underground in Oroville, CA, but has recently been relocated to the Sanford Underground Research Facility ( SURF) in Lead, SD. These facilities provide a variety of gamma spectroscopy services to low background experiments primarily in the form of passive material screening for primordial radioisotopes ( U, Th, K) or common cosmogenic/anthropogenic products, as well as active screening via Neutron Activation Analysis for specific applications. The LBF also provides hosting services for general R&D testing in low background environments on the surface or underground for background testing of detector systems or similar prototyping. A general overview of the facilities, services, and sensitivities is presented. Recent activities and upgrades will also be presented, such as the completion of a 3 pi anticoincidence shield at the surface station and environmental monitoring of Fukushima fallout. The LBF is open to any users for counting services or collaboration on a wide variety of experiments and projects. (C) 2014 Published by Elsevier Ltd. C1 [Smith, A. R.; Thomas, K. J.; Norman, E. B.; Chan, Y. D.; Hurley, D. L.] Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA. [Thomas, K. J.; Norman, E. B.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [Lesko, K. T.] Lawrence Berkeley Natl Lab, Phys Div, Berkeley, CA 94720 USA. RP Smith, AR (reprint author), Lawrence Berkeley Natl Lab, Nucl Sci Div, Berkeley, CA 94720 USA. NR 11 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 787 EP 795 DI 10.1016/j.phpro.2014.12.101 PG 9 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900112 ER PT S AU Xu, W Abgrall, N Aguayo, E Avignone, FT Barabash, AS Bertrand, FE Boswell, M Brudanin, V Busch, M Byram, D Caldwell, AS Chan, YD Christofferson, CD Combs, DC Cuesta, C Detwiler, JA Doe, PJ Efremenko, Y Egorov, V Ejiri, H Elliott, SR Fast, JE Finnerty, P Fraenkle, FM Galindo-Uribarri, A Giovanetti, GK Goett, J Green, MP Gruszko, J Guiseppe, VE Gusev, K Hallin, AL Hazama, R Hegai, A Henning, R Hoppe, EW Howard, S Howe, MA Keeter, KJ Kidd, MF Kochetov, O Konovalov, SI Kouzes, RT LaFerriere, BD Leon, J Leviner, LE Loach, JC MacMullin, J MacMullin, S Martin, RD Meijer, S Mertens, S Nomachi, M Orrell, JL O'Shaughnessy, C Overman, NR Phillips, DG Poon, AWP Pushkin, K Radford, DC Rager, J Rielage, K Robertson, RGH Romero-Romero, E Ronquest, MC Schubert, AG Shanks, B Shima, T Shirchenko, M Snavely, KJ Snyder, N Suriano, AM Thompson, J Timkin, V Tornow, W Trimble, JE Varner, RL Vasilyev, S Vetter, K Vorren, K White, BR Wilkerson, JF Wiseman, C Yakushev, E Young, AR Yu, CH Yumatov, V AF Xu, W. Abgrall, N. Aguayo, E. Avignone, F. T., III Barabash, A. S. Bertrand, F. E. Boswell, M. Brudanin, V. Busch, M. Byram, D. Caldwell, A. S. Chan, Y-D. Christofferson, C. D. Combs, D. C. Cuesta, C. Detwiler, J. A. Doe, P. J. Efremenko, Yu. Egorov, V. Ejiri, H. Elliott, S. R. Fast, J. E. Finnerty, P. Fraenkle, F. M. Galindo-Uribarri, A. Giovanetti, G. K. Goett, J. Green, M. P. Gruszko, J. Guiseppe, V. E. Gusev, K. Hallin, A. L. Hazama, R. Hegai, A. Henning, R. Hoppe, E. W. Howard, S. Howe, M. A. Keeter, K. J. Kidd, M. F. Kochetov, O. Konovalov, S. I. Kouzes, R. T. LaFerriere, B. D. Leon, J. Leviner, L. E. Loach, J. C. MacMullin, J. MacMullin, S. Martin, R. D. Meijer, S. Mertens, S. Nomachi, M. Orrell, J. L. O'Shaughnessy, C. Overman, N. R. Phillips, D. G., II Poon, A. W. P. Pushkin, K. Radford, D. C. Rager, J. Rielage, K. Robertson, R. G. H. Romero-Romero, E. Ronquest, M. C. Schubert, A. G. Shanks, B. Shima, T. Shirchenko, M. Snavely, K. J. Snyder, N. Suriano, A. M. Thompson, J. Timkin, V. Tornow, W. Trimble, J. E. Varner, R. L. Vasilyev, S. Vetter, K. Vorren, K. White, B. R. Wilkerson, J. F. Wiseman, C. Yakushev, E. Young, A. R. Yu, C. -H. Yumatov, V. BE Haxton, W Avignone, F TI Testing the Ge detectors for the MAJORANA DEMONSTRATOR SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE neutrinoless double beta decay; germanium detector; majorana ID DOUBLE-BETA DECAY AB High purity germanium (HPGe) crystals will be used for the Majorana Demonstrator, where they serve as both the source and the detector for neutrinoless double beta decay. It is crucial for the experiment to understand the performance of the HPGe crystals. A variety of crystal properties are being investigated, including basic properties such as energy resolution, efficiency, uniformity, capacitance, leakage current and crystal axis orientation, as well as more sophisticated properties, e.g. pulse shapes and dead layer and transition layer distributions. In this talk, we will present our measurements that characterize the HPGe crystals. We will also discuss the our simulation package for the detector characterization setup, and show that additional information can be extracted from data-simulation comparisons. Published by Elsevier B.V. C1 [Xu, W.; Boswell, M.; Elliott, S. R.; Goett, J.; Rielage, K.; Ronquest, M. C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Abgrall, N.; Chan, Y-D.; Hegai, A.; Mertens, S.; Poon, A. W. P.; Vetter, K.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA USA. [Aguayo, E.; Fast, J. E.; Hoppe, E. W.; Kouzes, R. T.; LaFerriere, B. D.; Orrell, J. L.; Overman, N. R.; Radford, D. C.] Pacific Northwest Natl Lab, Richland, WA USA. [Avignone, F. T., III; Guiseppe, V. E.; Wiseman, C.] Univ South Carolina, Dept Phys & Astron, Columbia, SC USA. [Avignone, F. T., III; Bertrand, F. E.; Galindo-Uribarri, A.; Green, M. P.; Romero-Romero, E.; Varner, R. L.; White, B. R.; Wilkerson, J. F.; Yu, C. -H.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Barabash, A. S.; Konovalov, S. I.; Yumatov, V.] Inst Theoret & Expt Phys, Moscow 117259, Russia. [Brudanin, V.; Egorov, V.; Gusev, K.; Kochetov, O.; Shirchenko, M.; Timkin, V.; Yakushev, E.] Joint Inst Nucl Res, Dubna, Russia. [Busch, M.; Tornow, W.] Duke Univ, Dept Phys, Durham, NC 27706 USA. [Busch, M.; Combs, D. C.; Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; Leviner, L. E.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Phillips, D. G., II; Rager, J.; Shanks, B.; Snavely, K. J.; Tornow, W.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.; Young, A. R.] Triangle Univ Nucl Lab, Durham, NC 27706 USA. [Byram, D.; Martin, R. D.; Pushkin, K.; Snyder, N.] Univ South Dakota, Dept Phys, Vermillion, SD USA. [Caldwell, A. S.; Christofferson, C. D.; Howard, S.; Suriano, A. M.; Thompson, J.] South Dakota Sch Mines & Technol, Rapid City, SD USA. [Combs, D. C.; Leviner, L. E.; Phillips, D. G., II; Young, A. R.] North Carolina State Univ, Dept Phys, Raleigh, NC USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Efremenko, Yu.; Romero-Romero, E.; Vasilyev, S.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Res Ctr Nucl Phys, Osaka, Japan. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Dept Phys, Osaka, Japan. [Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Rager, J.; Shanks, B.; Snavely, K. J.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC USA. [Hallin, A. L.] Univ Alberta, Ctr Particle Phys, Edmonton, AB, Canada. [Keeter, K. J.; Thompson, J.] Black Hills State Univ, Dept Phys, Spearfish, SD 57799 USA. [Kidd, M. F.] Tennessee Technol Univ, Cookeville, TN USA. [Loach, J. C.] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China. [Hegai, A.] Univ Tubingen, Tubingen, Germany. [Vetter, K.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Xu, W (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RI Barabash, Alexander/S-8851-2016; Cuesta, Clara/L-5466-2014; OI Cuesta, Clara/0000-0003-1190-7233; Rielage, Keith/0000-0002-7392-7152 NR 14 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 807 EP 815 DI 10.1016/j.phpro.2014.12.104 PG 9 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900115 ER PT S AU Cuesta, C Abgrall, N Aguayo, E Avignone, FT Barabash, AS Bertrand, FE Boswell, M Brudanin, V Busch, M Byram, D Caldwell, AS Chan, YD Christofferson, CD Combs, DC Detwiler, JA Doe, PJ Efremenko, Y Egorov, V Ejiri, H Elliott, SR Fast, JE Finnerty, P Fraenkle, FM Galindo-Uribarri, A Giovanetti, GK Goett, J Green, MP Gruszko, J Guiseppe, VE Gusev, K Hallin, AL Hazama, R Hegai, A Henning, R Hoppe, EW Howard, S Howe, MA Keeter, KJ Kidd, MF Kochetov, O Konovalov, SI Kouzes, RT LaFerriere, BD Leon, J Leviner, LE Loach, JC MacMullin, J MacMullin, S Martin, RD Meijer, S Mertens, S Nomachi, M Orrell, JL O'Shaughnessy, C Overman, NR Phillips, DG Poon, AWP Pushkin, K Radford, DC Rager, J Rielage, K Robertson, RGH Romero-Romero, E Ronquest, MC Schubert, AG Shanks, B Shima, T Shirchenko, M Snavely, KJ Snyder, N Suriano, AM Thompson, J Timkin, V Tornow, W Trimble, JE Varner, RL Vasilyev, S Vetter, K Vorren, K White, BR Wilkerson, JF Wiseman, C Xu, W Yakushev, E Young, AR Yu, CH Yumatov, V AF Cuesta, C. Abgrall, N. Aguayo, E. Avignone, F. T., III Barabash, A. S. Bertrand, F. E. Boswell, M. Brudanin, V. Busch, M. Byram, D. Caldwell, A. S. Chan, Y-D. Christofferson, C. D. Combs, D. C. Detwiler, J. A. Doe, P. J. Efremenko, Yu. Egorov, V. Ejiri, H. Elliott, S. R. Fast, J. E. Finnerty, P. Fraenkle, F. M. Galindo-Uribarri, A. Giovanetti, G. K. Goett, J. Green, M. P. Gruszko, J. Guiseppe, V. E. Gusev, K. Hallin, A. L. Hazama, R. Hegai, A. Henning, R. Hoppe, E. W. Howard, S. Howe, M. A. Keeter, K. J. Kidd, M. F. Kochetov, O. Konovalov, S. I. Kouzes, R. T. LaFerriere, B. D. Leon, J. Leviner, L. E. Loach, J. C. MacMullin, J. MacMullin, S. Martin, R. D. Meijer, S. Mertens, S. Nomachi, M. Orrell, J. L. O'Shaughnessy, C. Overman, N. R. Phillips, D. G., II Poon, A. W. P. Pushkin, K. Radford, D. C. Rager, J. Rielage, K. Robertson, R. G. H. Romero-Romero, E. Ronquest, M. C. Schubert, A. G. Shanks, B. Shima, T. Shirchenko, M. Snavely, K. J. Snyder, N. Suriano, A. M. Thompson, J. Timkin, V. Tornow, W. Trimble, J. E. Varner, R. L. Vasilyev, S. Vetter, K. Vorren, K. White, B. R. Wilkerson, J. F. Wiseman, C. Xu, W. Yakushev, E. Young, A. R. Yu, C. -H. Yumatov, V. BE Haxton, W Avignone, F TI Background Model for the MAJORANA DEMONSTRATOR SO 13TH INTERNATIONAL CONFERENCE ON TOPICS IN ASTROPARTICLE AND UNDERGROUND PHYSICS, TAUP 2013 SE Physics Procedia LA English DT Proceedings Paper CT 13th International Conference on Topics in Astroparticle and Underground Physics (TAUP) CY SEP 08-13, 2013 CL Monterey Peninsula, CA SP Lawrence Berkeley Natl Lab DE neutrinoless double beta decay; germanium detector; majorana ID NEUTRINO MASS; DECAY AB The Majorana Collaboration is constructing a system containing 40 kg of HPGe detectors to demonstrate the feasibility and potential of a future tonne-scale experiment capable of probing the neutrino mass scale in the inverted-hierarchy region. To realize this, a major goal of the Majorana Demonstrator is to demonstrate a path forward to achieving a background rate at or below 1 cnt/(ROI-t-y) in the 4 keV region of interest around the Q-value at 2039 keV. This goal is pursued through a combination of a significant reduction of radioactive impurities in construction materials with analytical methods for background rejection, for example using powerful pulse shape analysis techniques profiting from the p-type point contact HPGe detectors technology. The effectiveness of these methods is assessed using simulations of the different background components whose purity levels are constrained from radioassay measurements. (C) 2015 The Authors. Published by Elsevier Ltd. C1 [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA. [Cuesta, C.; Detwiler, J. A.; Doe, P. J.; Gruszko, J.; Leon, J.; Robertson, R. G. H.; Schubert, A. G.] Univ Washington, Dept Phys, Seattle, WA 98195 USA. [Abgrall, N.; Chan, Y-D.; Hegai, A.; Mertens, S.; Poon, A. W. P.; Vetter, K.] Lawrence Berkeley Natl Lab, Div Nucl Sci, Berkeley, CA USA. [Aguayo, E.; Fast, J. E.; Hoppe, E. W.; Kouzes, R. T.; LaFerriere, B. D.; Orrell, J. L.; Overman, N. R.] Pacific Northwest Natl Lab, Richland, WA USA. [Avignone, F. T., III; Guiseppe, V. E.; Wiseman, C.] Univ South Carolina, Dept Phys & Astron, Columbia, SC USA. [Avignone, F. T., III; Bertrand, F. E.; Galindo-Uribarri, A.; Green, M. P.; Radford, D. C.; Romero-Romero, E.; Varner, R. L.; White, B. R.; Wilkerson, J. F.; Yu, C. -H.] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Barabash, A. S.; Konovalov, S. I.; Yumatov, V.] Inst Theoret & Expt Phys, Moscow, Russia. [Boswell, M.; Elliott, S. R.; Goett, J.; Rielage, K.; Ronquest, M. C.; Xu, W.] Los Alamos Natl Lab, Los Alamos, NM USA. [Brudanin, V.; Egorov, V.; Gusev, K.; Kochetov, O.; Shirchenko, M.; Timkin, V.; Yakushev, E.] Joint Inst Nucl Res, Dubna, Russia. [Busch, M.; Tornow, W.] Duke Univ, Dept Phys, Durham, NC 27706 USA. [Busch, M.; Combs, D. C.; Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; Leviner, L. E.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Phillips, D. G., II; Rager, J.; Shanks, B.; Snavely, K. J.; Tornow, W.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.; Young, A. R.] Triangle Univ Nucl Lab, Durham, NC 27706 USA. [Byram, D.; Martin, R. D.; Pushkin, K.; Snyder, N.] Univ South Dakota, Dept Phys, Vermillion, SD USA. [Caldwell, A. S.; Christofferson, C. D.; Howard, S.; Suriano, A. M.; Thompson, J.] South Dakota Sch Mines & Technol, Rapid City, SD USA. [Combs, D. C.; Leviner, L. E.; Phillips, D. G., II; Young, A. R.] North Carolina State Univ, Dept Phys, Raleigh, NC USA. [Efremenko, Yu.; Romero-Romero, E.; Vasilyev, S.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Res Ctr Nucl Phys, Osaka, Japan. [Ejiri, H.; Hazama, R.; Nomachi, M.; Shima, T.] Osaka Univ, Dept Phys, Osaka, Japan. [Finnerty, P.; Fraenkle, F. M.; Giovanetti, G. K.; Henning, R.; Howe, M. A.; MacMullin, J.; MacMullin, S.; Meijer, S.; O'Shaughnessy, C.; Rager, J.; Shanks, B.; Snavely, K. J.; Trimble, J. E.; Vorren, K.; Wilkerson, J. F.] Univ N Carolina, Dept Phys & Astron, Chapel Hill, NC USA. [Hallin, A. L.] Univ Alberta, Ctr Particle Phys, Edmonton, AB, Canada. [Keeter, K. J.; Thompson, J.] Black Hills State Univ, Dept Phys, Spearfish, SD 57799 USA. [Kidd, M. F.] Tennessee Technol Univ, Cookeville, TN USA. [Loach, J. C.] Shanghai Jiao Tong Univ, Shanghai 200030, Peoples R China. [Hegai, A.] Univ Tubingen, Tubingen, Germany. [Vetter, K.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. RP Cuesta, C (reprint author), Univ Washington, Ctr Expt Nucl Phys & Astrophys, Seattle, WA 98195 USA.; Cuesta, C (reprint author), Univ Washington, Dept Phys, Seattle, WA 98195 USA. RI Barabash, Alexander/S-8851-2016; OI Rielage, Keith/0000-0002-7392-7152 NR 14 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 61 BP 821 EP 827 DI 10.1016/j.phpro.2015.06.001 PG 7 WC Physics, Applied SC Physics GA BF1JQ UT WOS:000380402900117 ER PT J AU Wong, ZJ Feng, L Ma, RM Wang, Y Zhang, X AF Wong, Zi Jing Feng, Liang Ma, Ren-Min Wang, Yuan Zhang, Xiang GP IEEE TI PARITY-TIME OPTICAL METAMATERIAL DEVICES SO 2015 20TH MICROOPTICS CONFERENCE (MOC) LA English DT Proceedings Paper CT 20th Microoptics Conference (MOC) CY OCT 25-28, 2015 CL Fukuoka, JAPAN ID SYMMETRY AB The interplay between gain and loss in optical metamaterials can lead to novel device functionalities. Here we demonstrate a single-mode laser with unique cavity mode manipulation capability based on thresholdless parity-time symmetry breaking. C1 [Wong, Zi Jing; Feng, Liang; Ma, Ren-Min; Wang, Yuan; Zhang, Xiang] Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA. [Wang, Yuan; Zhang, Xiang] Lawrence Berkeley Natl Lab, Div Mat Sci, Berkeley, CA 94720 USA. RP Wong, ZJ (reprint author), Univ Calif Berkeley, NSF Nanoscale Sci & Engn Ctr, Berkeley, CA 94720 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-4-8634-8487-0 PY 2015 PG 2 WC Optics; Physics, Applied SC Optics; Physics GA BF1FU UT WOS:000380392500014 ER PT J AU Vatsavai, RR AF Vatsavai, Ranga Raju GP IEEE TI Multitemporal Data Mining: From Biomass Monitoring to Nuclear Proliferation Detection SO 2015 8TH INTERNATIONAL WORKSHOP ON THE ANALYSIS OF MULTITEMPORAL REMOTE SENSING IMAGES (MULTI-TEMP) LA English DT Proceedings Paper CT 2015 8th International Workshop on the Analysis of Multitemporal Remote Sensing Images (Multi-Temp) CY JUL 22-24, 2015 CL Annecy, FRANCE SP IEEE, IEEE Geoscience & Remote Sensing Soc ID LAND-COVER; CLASSIFICATION; PHENOLOGY; SCALE AB We are living in an era of unprecedented population growth and migration, expanding urban and agriculture lands, depleting forests and portable water resources, and natural hazards and climate changes that are changing the face of the planet Earth. Multitemporal remote sensing observations provide a powerful means to monitor the Earth to identify and characterize these changes in near-real time. Data mining is proven to be highly useful in analyzing multi-resolution, multi-spectral, multisensor, and multi-temporal remote sensing data. In this paper we describe the state-of-the-art data mining approaches with applications in biomass and critical infrastructure monitoring. C1 [Vatsavai, Ranga Raju] North Carolina State Univ, Dept Comp Sci, 890 Oval Dr,Campus Box 8206, Raleigh, NC 27695 USA. [Vatsavai, Ranga Raju] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Vatsavai, RR (reprint author), North Carolina State Univ, Dept Comp Sci, 890 Oval Dr,Campus Box 8206, Raleigh, NC 27695 USA. EM rvatsavai@ncsu.edu NR 22 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7119-3 PY 2015 PG 4 WC Remote Sensing SC Remote Sensing GA BF1IN UT WOS:000380400100007 ER PT J AU Chen, HB Grider, G Inman, J Kuehn, JA AF Chen, Hsing-bung Grider, Gary Inman, Jeff Kuehn, Jeffery Alan BE Pu, C Mohindra, A TI The Impact of Vectorization on Erasure Code Computing in cloud storages-A Performance and Power Consumption Study SO 2015 IEEE 8TH INTERNATIONAL CONFERENCE ON CLOUD COMPUTING LA English DT Proceedings Paper CT IEEE 8th International Conference on Cloud Computing CY JUN 27-JUL 02, 2015 CL New York, NY SP IEEE, IEEE Comp Soc, Serv Soc, Comp Cloud, Serv Comp, Big Data, HP, IBM, ERICSSON, SAP, IBM RES, HUAWEI, IEEE CLOUD COMP, INT JOURNAL Business Proc Integrat & Management, IT Profess, INT JOURNAL Web Serv Res, Comp Now Access Discover Engage, IEEE Tansact Serv Comp DE Erasure code; Vectorization; Power measurement; Energy cost; Power consumption; SIMD; Cloud storage AB Erasure code storage systems are becoming popular choices for cloud storage systems due to cost-effective storage space saving schemes and higher fault-resilience capabilities. Both erasure code encoding and decoding procedures are involving heavy array, matrix, and table-lookup compute intensive operations. Multi-core, many-core, and streaming SIMD extension are implemented in modern CPU designs. In this paper, we study the power consumption and energy efficiency of erasure code computing using traditional Intel x86 platform and Intel Streaming SIMD extension platform. We use a breakdown power consumption analysis approach and conduct power studies of erasure code encoding process on various storage devices. We present the impact of various storage devices on erasure code based storage systems in terms of processing time, power utilization, and energy cost. Finally we conclude our studies and demonstrate the Intel x86's Streaming SIMD extensions computing is a cost-effective and favorable choice for future power efficient HPC cloud storage systems. C1 [Chen, Hsing-bung; Grider, Gary; Inman, Jeff; Kuehn, Jeffery Alan] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Chen, HB (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM hbchen@lanl.gov NR 28 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7287-9 PY 2015 BP 781 EP 788 DI 10.1109/CLOUD.2015.108 PG 8 WC Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2JR UT WOS:000380473600098 ER PT J AU Chard, R Chard, K Bubendorfer, K Lacinski, L Madduri, R Foster, I AF Chard, Ryan Chard, Kyle Bubendorfer, Kris Lacinski, Lukasz Madduri, Ravi Foster, Ian BE Pu, C Mohindra, A TI Cost-Aware Elastic Cloud Provisioning for Scientific Workloads SO 2015 IEEE 8TH INTERNATIONAL CONFERENCE ON CLOUD COMPUTING LA English DT Proceedings Paper CT IEEE 8th International Conference on Cloud Computing CY JUN 27-JUL 02, 2015 CL New York, NY SP IEEE, IEEE Comp Soc, Serv Soc, Comp Cloud, Serv Comp, Big Data, HP, IBM, ERICSSON, SAP, IBM RES, HUAWEI, IEEE CLOUD COMP, INT JOURNAL Business Proc Integrat & Management, IT Profess, INT JOURNAL Web Serv Res, Comp Now Access Discover Engage, IEEE Tansact Serv Comp AB Cloud computing provides an efficient model to host and scale scientific applications. While cloud-based approaches can reduce costs as users pay only for the resources used, it is often challenging to scale execution both efficiently and cost-effectively. We describe here a cost-aware elastic cloud provisioner designed to elastically provision cloud infrastructure to execute analyses cost-effectively. The provisioner considers real-time spot instance prices across availability zones, leverages application profiles to optimize instance type selection, over-provisions resources to alleviate bottlenecks caused by oversubscribed instance types, and is capable of reverting to on-demand instances when spot prices exceed thresholds. We evaluate the usage of our cost-aware provisioner using four production scientific gateways and show that it can produce cost savings of up to 97.2% when compared to naive provisioning approaches. C1 [Chard, Ryan; Bubendorfer, Kris] Victoria Univ Wellington, Sch Engn & Comp Sci, Wellington, New Zealand. [Chard, Kyle; Lacinski, Lukasz; Madduri, Ravi; Foster, Ian] Univ Chicago, Computat Inst, Chicago, IL 60637 USA. [Chard, Kyle; Lacinski, Lukasz; Madduri, Ravi; Foster, Ian] Argonne Natl Lab, Argonne, IL 60439 USA. RP Chard, R (reprint author), Victoria Univ Wellington, Sch Engn & Comp Sci, Wellington, New Zealand. NR 13 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7287-9 PY 2015 BP 971 EP 974 DI 10.1109/CLOUD.2015.130 PG 4 WC Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2JR UT WOS:000380473600122 ER PT J AU Wozniak, JM Chard, K Blaiszik, B Osborn, R Wilde, M Foster, I AF Wozniak, Justin M. Chard, Kyle Blaiszik, Ben Osborn, Ray Wilde, Michael Foster, Ian BE Raicu, I Rana, O Buyya, R TI Big Data Remote Access Interfaces for Light Source Science SO 2015 IEEE/ACM 2ND INTERNATIONAL SYMPOSIUM ON BIG DATA COMPUTING (BDC) LA English DT Proceedings Paper CT International Symposium on Big Data Computing CY DEC 07-15, 2015 CL Limassol, CYPRUS SP CPS, IEEE Comp Soc, IEEE, ACM, TCSC, Cyprus heart, fuseami, sighpc, Passion Success, Austrian, CPS Online AB The efficiency and reliability of big data computing applications frequently depend on the ease with which they can manage and move large distributed data. For example, in x-ray science, both raw data and various derived data must be moved between experiment halls and archives, supercomputers, and user workstations for reconstruction, analysis, visualization, storage, and other purposes. Throughout, data locations must be tracked and associations between raw and derived data maintained; data accesses, even over wide area networks, must be highly responsive to allow for interactive visualizations. We use here a typical x-ray science workflow to illustrate the use of two recently developed techniques for data movement, archiving, and tagging. The first is a scalable catalog for referencing, managing, and performing remote operations on distributed data. The second is a novel remote object interface for structured (HDF-based) data set manipulation and visualization. Our description of these techniques and their application to x-ray science problems sheds light on big data problems in experimental science, the gap between conventional big data solutions and scientific requirements, and ways in which this gap may be bridged. C1 [Wozniak, Justin M.; Chard, Kyle; Blaiszik, Ben; Wilde, Michael; Foster, Ian] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. [Wozniak, Justin M.; Chard, Kyle; Blaiszik, Ben; Wilde, Michael; Foster, Ian] Univ Chicago, Computat Inst, Chicago, IL 60637 USA. [Wozniak, Justin M.; Chard, Kyle; Blaiszik, Ben; Wilde, Michael; Foster, Ian] Argonne Natl Lab, Chicago, IL USA. [Osborn, Ray] Argonne Natl Lab, Div Mat Sci, Argonne, IL 60439 USA. [Foster, Ian] Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. RP Wozniak, JM (reprint author), Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. NR 23 TC 1 Z9 1 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5696-3 PY 2015 BP 51 EP 60 DI 10.1109/BDC.2015.37 PG 10 WC Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2DY UT WOS:000380459200006 ER PT J AU Bischof, J Wilke, A Gerlach, W Harrison, T Paczian, T Tang, W Trimble, W Wilkening, J Desai, N Meyer, F AF Bischof, Jared Wilke, Andreas Gerlach, Wolfgang Harrison, Travis Paczian, Tobias Tang, Wei Trimble, William Wilkening, Jared Desai, Narayan Meyer, Folker BE Raicu, I Rana, O Buyya, R TI Shock: Active Storage for Multicloud Streaming Data Analysis SO 2015 IEEE/ACM 2ND INTERNATIONAL SYMPOSIUM ON BIG DATA COMPUTING (BDC) LA English DT Proceedings Paper CT International Symposium on Big Data Computing CY DEC 07-15, 2015 CL Limassol, CYPRUS SP CPS, IEEE Comp Soc, IEEE, ACM, TCSC, Cyprus heart, fuseami, sighpc, Passion Success, Austrian, CPS Online DE bioinformatics; metagenomics; active object store; distributed wide-area computing ID METAGENOMICS AB Access to data plays a major role in designing and performing efficient data computation and analyses in a distributed environment. Existing approaches access data via a variety of methods and offer various benefits and drawbacks based on the use case. Our original use case was the computational analysis of environmental sequence data, or metagenomics. Unlike other workflows that often reduce the dataset size dramatically within the first few processing steps, owing to biologially-motivated data compression. Metagenomic data compresses poorly, and so metagenomic workflows add to the size of the data set along the processing pipeline. Thus, wide-area, high-throughput access to the data is essential. To address this problem, we developed Shock, a data store for files, their associated metadata, and indexes that allow Shock to provide different views into the data. Shock comprises three major components: a web service that provides a RESTful API, backend data storage for files, and storage for object metadata. Shock has proven to be a stable data store for MG-RAST, an application that served over 40,000 users in 2014 on a server that houses more than 3 million data objects. Moreover, Shock provides both subselection and high-performance file transfer capabilities that serve most usages. C1 [Bischof, Jared; Wilke, Andreas; Gerlach, Wolfgang; Harrison, Travis; Paczian, Tobias; Trimble, William; Meyer, Folker] Argonne Natl Lab, Argonne, IL 60439 USA. [Bischof, Jared; Wilke, Andreas; Gerlach, Wolfgang; Harrison, Travis; Paczian, Tobias; Trimble, William; Meyer, Folker] Univ Chicago, Chicago, IL 60637 USA. [Tang, Wei] Google Inc, Mountain View, CA USA. [Wilkening, Jared] Dramafever Inc, New York, NY USA. [Desai, Narayan] Ericsson, San Jose, CA USA. RP Bischof, J (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM jbischof@mcs.anl.gov; wilke@mcs.anl.gov; wgerlach@mcs.anl.gov; teharrison@mcs.anl.gov; paczian@mcs.anl.gov; weitang@google.com; trimble@anl.gov; jared.wilkening@gmail.com; narayan.desai@ericsson.com; folker@mcs.anl.gov NR 10 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5696-3 PY 2015 BP 68 EP 72 DI 10.1109/BDC.2015.40 PG 5 WC Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2DY UT WOS:000380459200008 ER PT S AU Olama, MM Matalgah, MM Bobrek, M AF Olama, Mohammed M. Matalgah, Mustafa M. Bobrek, Miljko GP IEEE TI An Integrated Signaling-Encryption Mechanism to Reduce Error Propagation in Wireless Communications: Performance Analyses SO 2015 IEEE INTERNATIONAL WORKSHOP TECHNICAL COMMITTEE ON COMMUNICATIONS QUALITY AND RELIABILITY (CQR) SE International Workshop Technical Committee on Communications Quality and Reliability LA English DT Proceedings Paper CT IEEE International Workshop Technical Committee on Communications Quality and Reliability CY MAY 11-14, 2015 CL Charleston, SC SP IEEE, IEEE Commun Soc DE cryptography; quality of service (QoS); throughput; bit-error rate; error correction coding; Rayleigh fading; advanced encryption standard (AES); Monte Carlo simulations AB Traditional encryption techniques require packet overhead, produce processing time delay, and suffer from severe quality of service deterioration due to fades and interference in wireless channels. These issues reduce the effective transmission data rate ( throughput) considerably in wireless communications, where data rate with limited bandwidth is the main constraint. In this paper, performance evaluation analyses are conducted for an integrated signaling-encryption mechanism that is secure and enables improved throughput and probability of bit-error in wireless channels. This mechanism eliminates the drawbacks stated herein by encrypting only a small portion of an entire transmitted frame, while the rest is not subject to traditional encryption but goes through a signaling process ( designed transformation) with the plaintext of the portion selected for encryption. We also propose to incorporate error correction coding solely on the small encrypted portion of the data to drastically improve the overall bit-error rate performance while not noticeably increasing the required bit-rate. We focus on validating the signaling-encryption mechanism utilizing Hamming and convolutional error correction coding by conducting an end-to-end system-level simulation-based study. The average probability of bit-error and throughput of the encryption mechanism are evaluated over standard Gaussian and Rayleigh fading-type channels and compared to the ones of the conventional advanced encryption standard (AES). C1 [Olama, Mohammed M.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. [Bobrek, Miljko] Oak Ridge Natl Lab, Elect & Elect Syst Res Div, Oak Ridge, TN 37831 USA. [Matalgah, Mustafa M.] Univ Mississippi, Dept Elect Engn, University, MS 38677 USA. RP Olama, MM (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. EM olamahussemm@ornl.gov; mustafa@olemiss.edu; bobrekm@ornl.gov NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2163-5595 BN 978-1-4799-8575-3 J9 IEEE INT WORK TECH PY 2015 PG 6 WC Computer Science, Information Systems; Telecommunications SC Computer Science; Telecommunications GA BF3GF UT WOS:000380540100003 ER PT J AU Fisk, G Ardi, C Pickett, N Heidemann, J Fisk, M Papadopoulos, C AF Fisk, Gina Ardi, Calvin Pickett, Neale Heidemann, John Fisk, Mike Papadopoulos, Christos GP IEEE TI Privacy Principles for Sharing Cyber Security Data SO 2015 IEEE SECURITY AND PRIVACY WORKSHOPS (SPW) LA English DT Proceedings Paper CT IEEE Security and Privacy Workshops (SPW) CY MAY 21-21, 2015 CL San Jose, CA SP CPS, IEE AB Sharing cyber security data across organizational boundaries brings both privacy risks in the exposure of personal information and data, and organizational risk in disclosing internal information. These risks occur as information leaks in network traffic or logs, and also in queries made across organizations. They are also complicated by the trade-offs in privacy preservation and utility present in anonymization to manage disclosure. In this paper, we define three principles that guide sharing security information across organizations: Least Disclosure, Qualitative Evaluation, and Forward Progress. We then discuss engineering approaches that apply these principles to a distributed security system. Application of these principles can reduce the risk of data exposure and help manage trust requirements for data sharing, helping to meet our goal of balancing privacy, organizational risk, and the ability to better respond to security with shared information. C1 [Fisk, Gina; Ardi, Calvin; Pickett, Neale; Fisk, Mike] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Ardi, Calvin; Heidemann, John] USC Informat Sci Inst, Marina Del Rey, CA 90292 USA. [Papadopoulos, Christos] Colorado State Univ, Ft Collins, CO 80523 USA. RP Fisk, G (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM gina@lanl.gov; calvin@isi.edu; neale@lanl.gov; johnh@isi.edu; mfisk@lanl.gov; christos@colostate.edu NR 29 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9933-0 PY 2015 BP 193 EP 197 DI 10.1109/SPW.2015.23 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BF2ZW UT WOS:000380514300024 ER PT S AU Chen, YC Young, S Qi, XW Gonder, J AF Chen, Yuche Young, Stanley Qi, Xuewei Gonder, Jeffrey GP IEEE TI Estimate of Fuel Consumption and GHG Emission Impact from an Automated Mobility District SO 2015 INTERNATIONAL CONFERENCE ON CONNECTED VEHICLES AND EXPO (ICCVE) SE International Conference on Connected Vehicles and Expo LA English DT Proceedings Paper CT International Conference on Connected Vehicles and Expo (ICCVE) CY OCT 19-23, 2015 CL Shenzhen, PEOPLES R CHINA DE Automated vehicles; mobility district; energy analysis AB This study estimates the range of fuel and emissions impacts of an automated-vehicle (AV)-based transit system that services campus-based developments, termed an automated mobility district (AMD). The study develops a framework to quantify the fuel consumption and greenhouse gas (GHG) emission impacts of a transit system comprised of AVs, taking into consideration average vehicle fleet composition, fuel consumption/GHG emission of vehicles within specific speed bins, and the average occupancy of passenger vehicles and transit vehicles. The framework is exercised using a previous mobility analysis of a personal rapid transit (PRT) system, a system that shares many attributes with envisioned AV-based transit systems. Total fuel consumption and GHG emissions with and without an AMD are estimated, providing a range of potential system impacts on sustainability. The results of a previous case study based on a proposed implementation of PRT on the Kansas State University (KSU) campus in Manhattan, Kansas, serve as the basis for estimating personal miles traveled supplanted by an AMD at varying levels of service. The results show that an AMD has the potential to reduce total system fuel consumption and GHG emissions, but the amount is largely dependent on operating and ridership assumptions. The study points to the need to better understand ride-sharing scenarios and calls for future research on sustainability benefits of an AMD system at both vehicle and system levels. C1 [Chen, Yuche; Young, Stanley; Gonder, Jeffrey] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Qi, Xuewei] Univ Calif Riverside, Dept Elect & Comp Engn, Riverside, CA 92521 USA. RP Chen, YC (reprint author), Natl Renewable Energy Lab, Golden, CO 80401 USA. EM Yuche.Chen@nrel.gov; Stanley.Young@nrel.gov; xqi001@ucr.edu; Jeff.Gonder@nrel.gov NR 7 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2378-1289 BN 978-1-5090-0264-1 J9 INT CONF CONNECT VEH PY 2015 BP 271 EP 278 PG 8 WC Engineering, Electrical & Electronic; Transportation Science & Technology SC Engineering; Transportation GA BF3IE UT WOS:000380545400040 ER PT J AU Parker, GG Weaver, WW Robinett, RD Wilson, DG AF Parker, Gordon G. Weaver, Wayne W. Robinett, Rush D. Wilson, David G. GP IEEE TI Optimal DC Microgrid Power Apportionment and Closed Loop Storage Control to Mitigate Source and Load Transients SO 2015 RESILIENCE WEEK (RSW) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 18-20, 2015 CL Philadelphia, PA SP INL, IEEE, IEEE Ind Elect Soc IES, Drexel Univ, Temple Univ, Univ of Penn, Florida Inst of Technol, The Ohio State Univ, Idaho State Univ ID ENERGY-STORAGE; SYSTEMS; DROOP AB This paper considers the optimal management of an N source, DC microgrid with time-varying sources and loads. Optimality is defined as minimizing the amount of power lost through the boost converters that connect the N sources to the DC bus. The optimal power apportionment strategy is part of an overall grid management system that also includes control laws that manage bus voltage and boost currents using distributed energy storage. The performance of an optimal power apportionment strategy is compared to an existing, alternate approach using a three source simulation for both source and load step transients. The optimal power apportionment strategy is shown to use less power while maintaining bus voltage in the presence of both load and source transients. Since the optimal solution requires information exchange between all the sources, there is an opportunity for malicious attack. The ability of the strategy to maintain the desired bus voltage in the presence of an uncommunicated source failure is also presented. C1 [Parker, Gordon G.; Weaver, Wayne W.; Robinett, Rush D.] Michigan Technol Univ, Houghton, MI 49931 USA. [Wilson, David G.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Parker, GG (reprint author), Michigan Technol Univ, Houghton, MI 49931 USA. EM ggparker@mtu.edu; dwilso@sandia.gov NR 20 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8594-4 PY 2015 BP 67 EP 73 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BF2BX UT WOS:000380454100011 ER PT J AU Boring, RL AF Boring, Ronald Laurids GP IEEE TI A Review of Human Reliability Needs in the US Nuclear Industry SO 2015 RESILIENCE WEEK (RSW) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 18-20, 2015 CL Philadelphia, PA SP INL, IEEE, IEEE Ind Elect Soc IES, Drexel Univ, Temple Univ, Univ of Penn, Florida Inst of Technol, The Ohio State Univ, Idaho State Univ DE Human reliability analysis; user needs; survey AB In this survey, 34 subject matter experts from the U.S. nuclear industry were interviewed to determine specific needs for human reliability analysis (HRA). Conclusions from the interviews are detailed in this article. A summary of the findings includes: (1) The need for improved guidance on the use of HRA methods generally and for specific applications. (2) The need for additional training in HRA to provide more hands-on experience in the application of HRA methods. (3) The development of HRA approaches suitable for advanced reactors, severe accident situations, and low-power and shutdown applications. (4) The refinement of HRA methods to account for factors such as crew variability, latent errors, more sophisticated dependency modeling, and errors of commission. (5) The continued need for simplified HRA methods appropriate for field applications. (6) The need for tighter coupling of HRA and human factors. (7) The need for improvements in the quantitative basis of HRA methods. These findings suggest the field of HRA is mature but still benefits from refinements. C1 [Boring, Ronald Laurids] Idaho Natl Lab, Human Factors Controls & Stat Dept, Idaho Falls, ID 83415 USA. RP Boring, RL (reprint author), Idaho Natl Lab, Human Factors Controls & Stat Dept, Idaho Falls, ID 83415 USA. EM ronald.boring@inl.gov NR 14 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8594-4 PY 2015 BP 158 EP 162 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BF2BX UT WOS:000380454100024 ER PT J AU Lew, R Boring, RL Ulrich, TA AF Lew, Roger Boring, Ronald L. Ulrich, Thomas A. GP IEEE TI A Tool for Assessing the Text Legibility of Digital Human Machine Interfaces SO 2015 RESILIENCE WEEK (RSW) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 18-20, 2015 CL Philadelphia, PA SP INL, IEEE, IEEE Ind Elect Soc IES, Drexel Univ, Temple Univ, Univ of Penn, Florida Inst of Technol, The Ohio State Univ, Idaho State Univ DE Human Factors; Text Legibility; Human Machine Interface ID COLOR COMBINATIONS; IMPACT AB A tool intended to aid qualified professionals in the assessment of the legibility of text presented on a digital display is described. The assessment of legibility is primarily for the purposes of designing and analyzing human machine interfaces in accordance with NUREG-0700 and MIL-STD 1472G. The tool addresses shortcomings of existing guidelines by providing more accurate metrics of text legibility with greater sensitivity to design alternatives. C1 [Lew, Roger] Univ Idaho, Virtual Technol & Design Dept, Moscow, ID 83843 USA. [Boring, Ronald L.; Ulrich, Thomas A.] Idaho Natl Lab, Human Factors Stat & Controls Dept, Idaho Falls, ID 83415 USA. RP Lew, R (reprint author), Univ Idaho, Virtual Technol & Design Dept, Moscow, ID 83843 USA. EM rogerlew@vandals.uidaho.edu; ronald.boring@inl.gov; thomas.ulrich@inl.gov NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8594-4 PY 2015 BP 163 EP 167 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BF2BX UT WOS:000380454100025 ER PT J AU Ulrich, TA Boring, RL Lew, R AF Ulrich, Thomas A. Boring, Ronald L. Lew, Roger GP IEEE TI Control Board Digital Interface Input Devices - Touchscreen, Trackpad, or Mouse? SO 2015 RESILIENCE WEEK (RSW) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 18-20, 2015 CL Philadelphia, PA SP INL, IEEE, IEEE Ind Elect Soc IES, Drexel Univ, Temple Univ, Univ of Penn, Florida Inst of Technol, The Ohio State Univ, Idaho State Univ DE Human System Interface; Turbine Control System; Input Device; Touchscreen; Mouse; Trackpad; Nuclear Power Plant; Control Room Modernization AB The authors collaborated with a power utility to evaluate input devices for use in the human system interface (HSI) for a new digital Turbine Control System (TCS) at a nuclear power plant (NPP) undergoing a TCS upgrade. A standalone dynamic software simulation of the new digital TCS and a mobile kiosk were developed to conduct an input device study to evaluate operator preference and input device effectiveness. The TCS software presented the anticipated HSI for the TCS and mimicked (i.e., simulated) the turbine systems' responses to operator commands. Twenty-four licensed operators from the two nuclear power units participated in the study. Three input devices were tested: a trackpad, mouse, and touchscreen. The subjective feedback from the survey indicates the operators preferred the touchscreen interface. The operators subjectively rated the touchscreen as the fastest and most comfortable input device given the range of tasks they performed during the study, but also noted a lack of accuracy for selecting small targets. The empirical data suggest the mouse input device provides the most consistent performance for screen navigation and manipulating on-screen controls. The trackpad input device was both empirically and subjectively found to be the least effective and least desired input device. C1 [Ulrich, Thomas A.; Boring, Ronald L.] Idaho Natl Lab, Human Factors Stat & Controls Dept, Idaho Falls, ID 83415 USA. [Lew, Roger] Univ Idaho, Virtual Technol & Design Dept, Moscow, ID 83843 USA. RP Ulrich, TA (reprint author), Idaho Natl Lab, Human Factors Stat & Controls Dept, Idaho Falls, ID 83415 USA. EM thomas.ulrich@inl.gov; ronald.boring@inl.gov; rogerlew@vandals.uidaho.edu NR 6 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8594-4 PY 2015 BP 168 EP 173 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BF2BX UT WOS:000380454100026 ER PT J AU Ragsdale, A Lew, R Boring, R AF Ragsdale, Austin Lew, Roger Boring, Ronald GP IEEE TI A Study on Trust in Alarms in a Nuclear Power Plant Microworld Simulation SO 2015 RESILIENCE WEEK (RSW) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 18-20, 2015 CL Philadelphia, PA SP INL, IEEE, IEEE Ind Elect Soc IES, Drexel Univ, Temple Univ, Univ of Penn, Florida Inst of Technol, The Ohio State Univ, Idaho State Univ DE Alarms; trust; process control; microworld ID AUTOMATION; HUMANS AB Different types of alarms and events can affect an operator's trust in an alarm system. This paper presents an experiment in which we examined the effect of two types of alarm systems (two-state and three-state alarms) on trust, alarm compliance, and diagnosis for two types of faults differing in complexity. Undergraduate university students using a simplified process control microworld simulation served as participants. The findings from this research showed participants performed better and had more trust in three-state alarms compared to two-state alarms. This paper discusses these findings in terms of their theoretical implications and practical applications to improving the efficiency and effectiveness of alarm systems in nuclear power plant operations. C1 [Ragsdale, Austin; Lew, Roger] Univ Idaho, Moscow, ID 83843 USA. [Boring, Ronald] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Ragsdale, A (reprint author), Univ Idaho, Moscow, ID 83843 USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8594-4 PY 2015 BP 174 EP 178 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BF2BX UT WOS:000380454100027 ER PT J AU Amarasinghe, K Manic, M Hruska, R AF Amarasinghe, Kasun Manic, Milos Hruska, Ryan GP IEEE TI Optimal Stop Word Selection for Text Mining in Critical Infrastructure Domain SO 2015 RESILIENCE WEEK (RSW) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 18-20, 2015 CL Philadelphia, PA SP INL, IEEE, IEEE Ind Elect Soc IES, Drexel Univ, Temple Univ, Univ of Penn, Florida Inst of Technol, The Ohio State Univ, Idaho State Univ DE Stop word selection; Dimensionality Selection; Text Mining; Genetic Algorithms; Text Classification ID INFORMATION AB Eliminating all stop words from the feature space is a standard practice of preprocessing in text mining, regardless of the domain which it is applied to. However, this may result in loss of important information, which adversely affects the accuracy of the text mining algorithm. Therefore, this paper proposes a novel methodology for selecting the optimal set of domain specific stop words for improved text mining accuracy. First, the presented methodology retains all the stop words in the text preprocessing phase. Then, an evolutionary technique is used to extract the optimal set of stop words that result in the best classification accuracy. The presented methodology was implemented on a corpus of open source news articles related to critical infrastructure hazards. The first step of mining geo-dependencies among critical infrastructures from text is text classification. In order to achieve this, article content was classified into two classes: 1) text content with geo-location information, and 2) text content without geo-location information. Classification accuracy presented methodology was compared to accuracies of four other test cases. Experimental results with 10-fold cross validation showed that the presented method yielded an increase of 1.76% or higher in True Positive (TP) rate and a 2.27% or higher increase in the True Negative (TN) rate compared to the other techniques. C1 [Amarasinghe, Kasun; Manic, Milos] Virginia Commonwealth Univ, Med Coll Virginia Campus, Richmond, VA 23284 USA. [Hruska, Ryan] Idaho Natl Lab, Idaho Falls, ID USA. RP Amarasinghe, K (reprint author), Virginia Commonwealth Univ, Med Coll Virginia Campus, Richmond, VA 23284 USA. EM amarasinghek@vcu.edu; miko@ieee.org; ryan.hruska@inl.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8594-4 PY 2015 BP 179 EP 184 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BF2BX UT WOS:000380454100028 ER PT J AU Eshghi, K Johnson, BK Rieger, CG AF Eshghi, Kamshad Johnson, Brian K. Rieger, Craig G. GP IEEE TI Power System Protection and Resilient Metrics SO 2015 RESILIENCE WEEK (RSW) LA English DT Proceedings Paper CT Resilience Week (RWS) CY AUG 18-20, 2015 CL Philadelphia, PA SP INL, IEEE, IEEE Ind Elect Soc IES, Drexel Univ, Temple Univ, Univ of Penn, Florida Inst of Technol, The Ohio State Univ, Idaho State Univ AB During a real-time power system event, a system operator needs to conservatively reduce operating limits while the changing system conditions are analyzed. The time it takes to develop new operating limits could affect millions of transmission system users, especially if this event is classified by NERC as a Category D type event (extreme events resulting in the loss of two or more bulk electric system elements). Controls for the future grid must be able to perform real-time analysis, identify new reliability risks, and set new SOLs (System Operating Limit) for real-time operations. In this paper we are developing "Resilience Metrics" requirements that describe how systems operate at an acceptable level of normalcy despite disturbances or threats. We consider the interdependencies inherent in critical infrastructure systems and discuss some distributed resilience metrics that can be in current supervisory control and data acquisition (SCADA) to provide a level of state awareness. This level of awareness provides knowledge that can be used to characterize and reduce the risk of cascading events. A "resilience power system agent" is proposed that provides attributes to measure and perform this metrics. C1 [Eshghi, Kamshad] Black & Veatch Consulting Engineers, Portland, OR 97201 USA. [Johnson, Brian K.] Univ Idaho, Moscow, ID 83843 USA. [Rieger, Craig G.] Idaho Natl Lab, Idaho Falls, ID USA. RP Eshghi, K (reprint author), Black & Veatch Consulting Engineers, Portland, OR 97201 USA. NR 20 TC 0 Z9 0 U1 0 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8594-4 PY 2015 BP 212 EP 219 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BF2BX UT WOS:000380454100034 ER PT J AU Aksyuk, VA Dennis, BS Haftel, MI Czaplewski, DA Lopez, D Blumberg, G AF Aksyuk, V. A. Dennis, B. S. Haftel, M. I. Czaplewski, D. A. Lopez, D. Blumberg, G. GP IEEE TI SMALL FOOTPRINT NANO-MECHANICAL PLASMONIC PHASE MODULATORS SO 2015 TRANSDUCERS - 2015 18TH INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS (TRANSDUCERS) LA English DT Proceedings Paper CT 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS) CY JUN 21-25, 2015 CL Anchorage, AK SP TRF, IEEE, Elect Devices Soc DE Plasmonics; nanomechanical; phase modulator; photonic switch; Mach-Zehnder AB The authors' recent Nature Photonics article titled "Compact Nano-Mechanical Plasmonic Phase Modulators" [1] is reviewed which reports a new phase modulation principle with experimental demonstration of a 23 mu m long non-resonant modulator having 1.5 pi rad range with 1.7 dB excess loss at 780 nm. Analysis showed that by decreasing all dimensions, a low loss, ultra-compact pi rad phase modulator is possible. Application of this type of nanomechanical modulator in a miniature 2 x 2 switch is suggested and an optical design numerically validated. The footprint of the switch is 0.5 mu m x 2.5 mu m. C1 [Aksyuk, V. A.; Dennis, B. S.] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA. [Dennis, B. S.; Blumberg, G.] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ USA. [Haftel, M. I.] Univ Colorado, Dept Phys, Colorado Springs, CO 80933 USA. [Czaplewski, D. A.; Lopez, D.] Argonne Natl Lab, Ctr Nanoscale Mat, Argonne, IL 60439 USA. RP Aksyuk, VA (reprint author), NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA. EM vladimir.aksyuk@nist.gov NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8955-3 PY 2015 BP 204 EP 207 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BF2EU UT WOS:000380461400052 ER PT J AU Harley-Trochimczyk, A Chang, J Pham, T Dong, J Worsley, MA Zettl, A Mickelson, W Maboudian, R AF Harley-Trochimczyk, A. Chang, J. Pham, T. Dong, J. Worsley, M. A. Zettl, A. Mickelson, W. Maboudian, R. GP IEEE TI LOW POWER MICROHEATER-BASED COMBUSTIBLE GAS SENSOR WITH GRAPHENE AEROGEL CATALYST SUPPORT SO 2015 TRANSDUCERS - 2015 18TH INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS (TRANSDUCERS) LA English DT Proceedings Paper CT 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS) CY JUN 21-25, 2015 CL Anchorage, AK SP TRF, IEEE, Elect Devices Soc DE Combustible gas sensing; microheater; graphene aerogel; platinum nanoparticles; palladium nanoparticles ID METHANE AB This paper reports a microheater-based combustible gas sensor with ultra-low power consumption (1.4 mW) using pulsed heating and novel sensing materials. High surface area graphene aerogel is used as a support for platinum and palladium nanoparticles. Pulsed heating (450 degrees C) at a 10% duty cycle yields an order of magnitude reduction in power consumption with no loss of sensitivity. Sensing response to hydrogen and propane gas shows promising selectivity and order of magnitude faster response and recovery times (1-2 s) compared to previous work. The results indicate a high level of flexibility in creating selective, low power combustible gas sensors using this microheater platform and catalytic material system. C1 [Harley-Trochimczyk, A.; Mickelson, W.; Maboudian, R.] Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA. [Harley-Trochimczyk, A.; Maboudian, R.] Univ Calif Berkeley, Berkeley Sensor & Actuator Ctr, Berkeley, CA 94720 USA. [Chang, J.; Pham, T.; Dong, J.; Zettl, A.] Univ Calif Berkeley, Dept Phys, Berkeley, CA 94720 USA. [Worsley, M. A.] Lawrence Livermore Natl Lab, Phys & Life Sci Directorate, Livermore, CA USA. RP Harley-Trochimczyk, A (reprint author), Univ Calif Berkeley, Dept Chem & Biomol Engn, Berkeley, CA 94720 USA. EM anna.harleytr@berkeley.edu RI Zettl, Alex/O-4925-2016; OI Zettl, Alex/0000-0001-6330-136X; Worsley, Marcus/0000-0002-8012-7727 NR 14 TC 0 Z9 0 U1 3 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8955-3 PY 2015 BP 1483 EP 1486 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BF2EU UT WOS:000380461400370 ER PT J AU Czaplewski, DA Antonio, D Guest, JR Lopez, D Arroyo, SI Zanette, DH AF Czaplewski, D. A. Antonio, D. Guest, J. R. Lopez, D. Arroyo, S. I. Zanette, D. H. GP IEEE TI ENHANCED SYNCHRONIZATION RANGE FROM NON-LINEAR MICROMECHANICAL OSCILLATORS SO 2015 TRANSDUCERS - 2015 18TH INTERNATIONAL CONFERENCE ON SOLID-STATE SENSORS, ACTUATORS AND MICROSYSTEMS (TRANSDUCERS) LA English DT Proceedings Paper CT 18th International Conference on Solid-State Sensors, Actuators and Microsystems (TRANSDUCERS) CY JUN 21-25, 2015 CL Anchorage, AK SP TRF, IEEE, Elect Devices Soc DE Synchronization; Duffing nonlinearity; non-linear; oscillator; resonator; self-sustained; MEMS AB In this paper, we report that the synchronization range of micro-oscillators increases with increasing drive force when operating the oscillators in the non-linear regime. This enhancement is contrary to the same observation for oscillators operating in the linear regime where the synchronization range decreases with increasing drive force. This creates the ability to synchronize multiple oscillators operating in the non-linear regime across a greater frequency range to accommodate larger frequency deviations between devices caused by fabrication variances. We have observed the increased synchronization range in both mechanical hardening and electrostatic softening non-linear micro-oscillators. C1 [Czaplewski, D. A.; Antonio, D.; Guest, J. R.; Lopez, D.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. [Arroyo, S. I.; Zanette, D. H.] Ctr Atom Bariloche, San Carlos De Bariloche, Rio Negro, Argentina. [Arroyo, S. I.; Zanette, D. H.] Inst Balseiro, San Carlos De Bariloche, Rio Negro, Argentina. RP Czaplewski, DA (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM dczaplewski@anl.gov RI Guest, Jeffrey/B-2715-2009 OI Guest, Jeffrey/0000-0002-9756-8801 NR 8 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8955-3 PY 2015 BP 2001 EP 2004 PG 4 WC Engineering, Electrical & Electronic; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA BF2EU UT WOS:000380461400500 ER PT S AU Chen, SQ Guan, J Levine, MD Li, HY Yowargana, P AF Chen, Shuqin Guan, Jun Levine, Mark D. Li Haiying Yowargana, P. BE Sun, Y Pei, J TI Evaluation on Retrofit of One Existing Residential Building in North China: Energy Saving, Environmental and Economic Benefits SO 9TH INTERNATIONAL SYMPOSIUM ON HEATING, VENTILATION AND AIR CONDITIONING (ISHVAC) JOINT WITH THE 3RD INTERNATIONAL CONFERENCE ON BUILDING ENERGY AND ENVIRONMENT (COBEE) SE Procedia Engineering LA English DT Proceedings Paper CT 9th International Symposium on Heating Ventilation and Air Conditioning ISHVAC Joint with the 3rd International Conference on Building Energy and Environment COBEE CY JUL 12-15, 2015 CL Tianjin, PEOPLES R CHINA DE Benefit evaluation; Energy efficiency; Retrofit; Residential building; North China AB Energy efficiency retrofit of residential buildings, widely carried out in north China, has been aroused a great concern during recent years. In this case, one typical residential building with energy efficiency retrofit was selected in Tangshan as a case study. Indoor thermal environment and space heating use of the building were measured before and after the retrofit. A methodology is developed to evaluate the energy-saving, environmental and economic benefits for the retrofit. Results show the full-scale retrofit in this building can meet the 50% energy saving target set by the government. Indoor thermal environment achieved a good improvement after the full-scale retrofit as well. The results could be a reference of evaluation and optimization of energy efficiency retrofit schemes of residential buildings in north China. (C) 2015 The Authors. Published by Elsevier Ltd. C1 [Chen, Shuqin] Zhejiang Univ, Coll Civil Engn & Architecture, Hangzhou, Zhejiang, Peoples R China. [Guan, Jun] Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, Trondheim, Norway. [Levine, Mark D.] Lawrence Berkeley Natl Lab, Berkeley, CA USA. [Li Haiying] Hebei Polytech Univ, Coll Met & Energy, Tangshan, Peoples R China. [Yowargana, P.] Azure Int Technol & Dev Beijing Limited, Beijing 100027, Peoples R China. RP Guan, J (reprint author), Norwegian Univ Sci & Technol, Dept Energy & Proc Engn, Trondheim, Norway. EM hn_csq@126.com; guanjun2009@gmail.com NR 15 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 121 BP 3 EP 10 DI 10.1016/j.proeng.2015.08.1011 PG 8 WC Construction & Building Technology; Engineering, Multidisciplinary SC Construction & Building Technology; Engineering GA BF2TP UT WOS:000380499000002 ER PT S AU Zhao, SG Feng, W Zhang, SC Hou, J Zhou, N Levine, M AF Zhao, Shanguo Feng, Wei Zhang, Shicong Hou, Jing Zhou, Nan Levine, Mark BE Sun, Y Pei, J TI Energy Savings and Cost-benefit Analysis of the New Commercial Building Standard in China SO 9TH INTERNATIONAL SYMPOSIUM ON HEATING, VENTILATION AND AIR CONDITIONING (ISHVAC) JOINT WITH THE 3RD INTERNATIONAL CONFERENCE ON BUILDING ENERGY AND ENVIRONMENT (COBEE) SE Procedia Engineering LA English DT Proceedings Paper CT 9th International Symposium on Heating Ventilation and Air Conditioning ISHVAC Joint with the 3rd International Conference on Building Energy and Environment COBEE CY JUL 12-15, 2015 CL Tianjin, PEOPLES R CHINA DE Commercial building; Energy efficiency standard; Reference building; Cost-benefit; Simulation ID CONSUMPTION AB In this paper, a comprehensive comparison of the commercial building energy efficiency standard between the previous 2005 version and the new proposed version is conducted, including the energy efficiency analysis and cost-benefit analysis. To better understand the tech-economic performance of the new Chinese standard, energy models were set up based on a typical commercial office building in Chinese climate zones. The building energy standard in 2005 is used as the baseline for this analysis. Key building technologies measures are analyzed individually, including roof, wall, window, lighting and chiller and so on and finally whole building cost-benefit analysis was conducted. Results show that the new commercial building energy standard demonstrates good cost-effective performance, with whole building payback period around 4 years (C) 2015 Published by Elsevier Ltd. C1 [Zhao, Shanguo; Feng, Wei; Zhou, Nan; Levine, Mark] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Zhao, Shanguo] SouthEast Univ, Nanjing, Jiangsu, Peoples R China. [Zhang, Shicong] China Acad Bldg Res, Beijing, Peoples R China. [Hou, Jing] Beijing Jiaotong Univ, Beijing, Peoples R China. RP Feng, W (reprint author), Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM weifeng@lbl.gov NR 9 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 121 BP 317 EP 324 DI 10.1016/j.proeng.2015.08.1074 PG 8 WC Construction & Building Technology; Engineering, Multidisciplinary SC Construction & Building Technology; Engineering GA BF2TP UT WOS:000380499000045 ER PT S AU Engbrecht, DC Hirschfeld, DA AF Engbrecht, Dick C. Hirschfeld, Deidre A. BE Wessel, RA Shipp, PH Rosenthal, GL TI Effects of Chemical Modification on Calcium Sulfate Castings Exposed to High Temperature SO ADVANCES IN GYPSUM TECHNOLOGIES AND BUILDING SYSTEMS SE American Society for Testing and Materials Special Technical Publications LA English DT Proceedings Paper CT Symposium on Advances in Gypsum Technologies and Building Systems CY MAY 21, 2015 CL Anaheim, CA SP ASTM Int Comm C11 DE gypsum; anhydrite; wallboard; borate; DTA/TGA; FTIR; Raman; XRD; high temperature; thermal analysis; density; shrinkage; hardness ID CRYSTAL-STRUCTURE; NATURAL GYPSUM; MINERALS; CASO4 AB Calcium sulfate dihydrate is the primary ingredient in passive gypsum drywall fire barrier systems. The endothermic properties of calcium sulfate dihydrate are well known and exploited in these systems. Researchers in fire modeling have extensively studied the endothermic properties of gypsum up to 500 degrees C. This study reports on the influence of selected chemical and mineral constituents on dimensional and thermal property changes in gypsum casts in excess of the critical crystal dehydration temperature (between 500 degrees and 1000 degrees C). Gypsum from natural and flue gas desulfurization (FGD) sources used in commercial operations were evaluated for changes by differential thermal analysis/thermogravimetric analysis (DTA/TGA), Fourier transform infrared (FTIR) spectroscopy, Raman spectra analysis, X-ray diffraction (XRD), and scanning electron microscopy (SEM). Petalite and Gerstley borate were added to a basic formula used in commercially manufactured wallboard for fire barrier systems. The analysis of the data identified significant changes in density and hardness of the gypsum casts related to the addition of Petalite and Gerstley borate. C1 [Hirschfeld, Deidre A.] Sandia Natl Labs, Coatings & Addit Mfg Dept, Albuquerque, NM 87185 USA. RP Engbrecht, DC (reprint author), 738 S Patton Circle, Arlington Hts, IL 60005 USA. NR 24 TC 0 Z9 0 U1 2 U2 2 PU ASTM INTERNATIONAL PI WEST CONSHOHOCKEN PA 100 BARR HARBOR DRIVE, PO BOX C700, WEST CONSHOHOCKEN, PA 19428-2959 USA SN 0066-0558 BN 978-0-8031-7621-8 J9 AM SOC TEST MATER PY 2015 VL 1588 BP 41 EP 66 PG 26 WC Construction & Building Technology; Materials Science, Paper & Wood; Materials Science, Characterization & Testing SC Construction & Building Technology; Materials Science GA BF3CC UT WOS:000380524800004 ER PT B AU Sallach, DL AF Sallach, David L. BE Nakai, Y Koyama, Y Terano, T TI Topos Modeling of Social Conflict: Theory and Methods SO AGENT-BASED APPROACHES IN ECONOMIC AND SOCIAL COMPLEX SYSTEMS VIII LA English DT Proceedings Paper CT International Workshop on Agent-Based Approaches in Economic and Social Complex Systems (AESCS) CY SEP 11-13, 2013 CL Shibaura Inst Technol, Tokyo, JAPAN SP Pan Asian Assoc Agent Based Approach Social Syst Sci HO Shibaura Inst Technol DE Category theory; Topos theory; Recognition theory; Local logic; Truth granularity; Notional truth attribution; Social conflict; Social model of war ID EXPLOITATION; EXPLORATION AB Category theory and, more specifically, topos categories provide a more expressive type of mathematical modeling and, thereby, open the door to social models that are both rigorous and expressive. The present analysis draws upon four views of topos categories to construct a rich model of a logic based on recognition theory. The topos initially provides support for: (1) set theory (and classical logic), (2) topological regions dualism. The resulting structures support: (3) a local intuitionist logic that can vary by situated circumstances and actor types, and (4) the specification of regions that are defined by finely-differentiated classifiers. These tools construct an integrated topos category of social recognition that supports diverse forms of local logic. The latter are then explored regarding their contributions to a mathematical model of social conflict. Categorial analysis of historical patterns, as well as a complementary simulation model, is used to illustrate the advantages of such an approach. C1 [Sallach, David L.] Univ Chicago, Argonne Natl Lab, Chicago, IL 60637 USA. RP Sallach, DL (reprint author), Univ Chicago, Argonne Natl Lab, Chicago, IL 60637 USA. EM sallach@anl.gov NR 58 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER-VERLAG TOKYO PI TOKYO PA 37-3, HONGO 3-CHOME BONKYO-KU, TOKYO, 113, JAPAN BN 978-4-431-55236-9; 978-4-431-55235-2 PY 2015 BP 39 EP 51 DI 10.1007/978-4-431-55236-9_4 PG 13 WC Economics; Management SC Business & Economics GA BF3PA UT WOS:000380563900004 ER PT S AU Werner, BT Daniel, IM AF Werner, B. T. Daniel, I. M. BE Qi, HJ Antoun, B Hall, R Lu, H Arzoumanidis, A Silberstein, M Furmanski, J Amirkhizi, A Gonzalez Gutierrez, J TI Yield Criterion for Polymeric Matrix Under Static and Dynamic Loading SO CHALLENGES IN MECHANICS OF TIME-DEPENDENT MATERIALS, VOL 2 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT SEM Annual Conference & Exposition on Experimental and Applied Mechanics CY JUN 02-05, 2014 CL Greenville, SC SP Soc Expt Mechan DE Polymer-matrix; Multi-axial testing; Elastic-plastic behavior; Yield criteria; Strain rate effects ID STRAIN-RATE; EPOXY-RESIN; ISOTROPIC MATERIALS; BEHAVIOR; DEFORMATION; FAILURE; MODEL; TEMPERATURE; COMPOSITES; TENSILE AB A polymeric matrix (3501-6) used in composite materials was characterized under multi-axial quasi-static and dynamic loading at varying strain rates. Tests were conducted under uniaxial compression, tension, pure shear and combinations of compression and shear. Quasi-static and intermediate strain rate tests were conducted in a servo-hydraulic testing machine. High strain rate tests were conducted using a split Hopkinson Pressure Bar system built for the purpose. This SHPB system was made of glass/epoxy composite (Garolite) bars having an impedance matching the test polymer closer than metals. The typical stress-strain behavior exhibits a linear elastic region up to a yields point, a nonlinear elastoplastic region up to an initial peak or critical stress, followed by a strain softening region up to a local minimum and finally, a strain hardening region up to ultimate failure. It was observed that under multi-axial loading, yielding is governed by one characteristic property, the yield strain under uniaxial tension. Furthermore, it was found that the yield point varied linearly with the logarithm of strain rate. A general three-dimensional elasto-viscoplastic model was formulated in strain space expressed in terms of an effective strain and its yield point. A unified yield criterion was proposed to describe the onset of yielding under any state of stress and at any strain rate. C1 [Werner, B. T.] Sandia Natl Labs, Livermore, CA USA. [Daniel, I. M.] Northwestern Univ, Evanston, IL 60208 USA. RP Daniel, IM (reprint author), Northwestern Univ, Evanston, IL 60208 USA. EM bwerner@sandia.gov; imdaniel@northwestern.edu NR 19 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-06980-7; 978-3-319-06979-1 J9 C PROC SOC EXP MECH PY 2015 BP 11 EP 19 DI 10.1007/978-3-319-06980-7_2 PG 9 WC Mechanics; Materials Science, Characterization & Testing SC Mechanics; Materials Science GA BF3KQ UT WOS:000380552100002 ER PT S AU Antoun, BR Chambers, RS Emery, JM Tandon, R AF Antoun, Bonnie R. Chambers, Robert S. Emery, John M. Tandon, Rajan BE Qi, HJ Antoun, B Hall, R Lu, H Arzoumanidis, A Silberstein, M Furmanski, J Amirkhizi, A Gonzalez Gutierrez, J TI Small Strain Plasticity Behavior of 304L Stainless Steel in Glass-to-Metal Seal Applications SO CHALLENGES IN MECHANICS OF TIME-DEPENDENT MATERIALS, VOL 2 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT SEM Annual Conference & Exposition on Experimental and Applied Mechanics CY JUN 02-05, 2014 CL Greenville, SC SP Soc Expt Mechan DE Stainless steel; Plasticity; Small strain; Relaxation; Temperature AB Cracks in glass-to-metal seals can be a threat to the hermeticity of isolated electronic components. Design and manufacturing of the materials and processes can be tailored to minimize the residual stresses responsible for cracking. However, this requires high fidelity material modeling accounting for the plastic strains in the metals, mismatched thermal shrinkage and property changes experienced as the glass solidifies during cooling of the assembly in manufacturing. Small plastic strains of just a few percent are typical during processing of glass-to-metal seals and yet can generate substantial tensile stresses in the glass during elastic unloading in thermal cycling. Therefore, experimental methods were developed to obtain very accurate measurements of strain near and just beyond the proportional limit. Small strain tensile characterization experiments were conducted with varying levels and rates of strain ratcheting over the temperatures range of -50 to 550 degrees C, with particular attention near the glass transition temperature of 500 degrees C. Additional experiments were designed to quantify the effects of stress relaxation and reloading. The experimental techniques developed and resulting data will be presented. Details of constitutive modeling efforts and glass material experiments and modeling can be found in Chambers et al. (Characterization & modeling of materials in glass-to-metal seals: Part I. SAND14-0192. Sandia National Laboratories, January 2014). C1 [Antoun, Bonnie R.] Sandia Natl Labs, Livermore, CA 94551 USA. [Chambers, Robert S.; Emery, John M.; Tandon, Rajan] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Antoun, BR (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. EM brantou@sandia.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-06980-7; 978-3-319-06979-1 J9 C PROC SOC EXP MECH PY 2015 BP 49 EP 54 DI 10.1007/978-3-319-06980-7_6 PG 6 WC Mechanics; Materials Science, Characterization & Testing SC Mechanics; Materials Science GA BF3KQ UT WOS:000380552100006 ER PT S AU Antoun, BR Connelly, KJ Goods, SH Sartor, GB AF Antoun, Bonnie R. Connelly, Kevin J. Goods, Steven H. Sartor, George B. BE Qi, HJ Antoun, B Hall, R Lu, H Arzoumanidis, A Silberstein, M Furmanski, J Amirkhizi, A Gonzalez Gutierrez, J TI Thermomechanical Fatigue Evaluation of Haynes (R) 230 (R) for Solar Receiver Applications SO CHALLENGES IN MECHANICS OF TIME-DEPENDENT MATERIALS, VOL 2 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT SEM Annual Conference & Exposition on Experimental and Applied Mechanics CY JUN 02-05, 2014 CL Greenville, SC SP Soc Expt Mechan DE Fatigue; Thermal-mechanical; Haynes 230; Solar; Temperature AB Haynes (R) 230 (R) is a Ni-Cr-W-Mo alloy commonly used in aerospace and chemical process industries because of its excellent oxidation resistance, fatigue and creep performance at very high temperatures. In this study, the alloy was evaluated as a candidate for its use as tubing material in solar receivers, where coupled thermal-mechanical cycling is imposed in-use by heating imposed during diurnal cycles. The effect of temperature, 425 and 677 degrees C, and hold times on isothermal fatigue was evaluated and fatigue-life curves were developed for the alloy in its as-received condition and after aging at 677 degrees C for 3 months. Experimental apparatus and techniques were developed to apply thermomechanical cycles, between 425 and 677 degrees C, in an expedited manner to determine fatigue life at low strain ranges, again for both material conditions. The influence of stress ratio, R = -1 and R = infinity, was also assessed. The experimental techniques developed and resulting data and findings will be presented. C1 [Antoun, Bonnie R.; Connelly, Kevin J.; Goods, Steven H.; Sartor, George B.] Sandia Natl Labs, Livermore, CA 94551 USA. RP Antoun, BR (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. EM brantou@sandia.gov NR 2 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-06980-7; 978-3-319-06979-1 J9 C PROC SOC EXP MECH PY 2015 BP 81 EP 87 DI 10.1007/978-3-319-06980-7_10 PG 7 WC Mechanics; Materials Science, Characterization & Testing SC Mechanics; Materials Science GA BF3KQ UT WOS:000380552100010 ER PT S AU Hahn, H Ben-Zvi, I Belomestnykh, S Hammons, L Litvinenko, V Than, YR Todd, R Weiss, D Xu, WC AF Hahn, H. Ben-Zvi, I. Belomestnykh, S. Hammons, L. Litvinenko, V. Than, Y. R. Todd, R. Weiss, D. Xu, Wencan BE Baboi, N Jones, R VanRienen, U Solyak, N Yakovlev, V TI HOMs of the SRF electron gun cavity in the BNL ERL SO ICFA MINI WORKSHOP ON HIGH ORDER MODES IN SUPERCONDUCTING CAVITIES, HOMSC14 SE Physics Procedia LA English DT Proceedings Paper CT ICFA mini Workshop on High Order Modes in Superconducting Cavities, HOMSC14 CY JUL 14-16, 2014 CL BATAVIA, IL DE Energy recovery linac; Superconducting electron gun cavity; Higher order modes; Ceramic-ferrite absorber; Radial waveguide modes AB The Brookhaven Energy Recovery Linac (ERL) is operated as an R&D test bed for high-current, low emittance electron beams. It comprises a superconducting five-cell cavity and a half-cell superconducting RF photo-injector electron gun. The ERL is undergoing commissioning with focus on the performance of the electron gun, not the least on the cavity Higher Order Modes (HOM). Among the various alternative solutions, a beam tube damper based on a layer of ferrite tiles was adopted for the five-cell accelerator cavity. For the gun, a ceramic-ferrite damper consisting of a lossless ceramic cylinder surrounded by damping ferrite tiles has been investigated. This design is innovative in its damper approach and combines a variety of goals including broadband HOM damping and protection of the superconducting cavity vacuum from potential damage by the separately cooled absorber. In this paper the empirical performance of an installed ceramic-ferrite damper is described by the Q reduction of a few selected gun cavity resonances. The theoretical coupling impedance presented to a traversing beam is numerically analyzed in terms of radial waveguide modes in the damper section. Strong damping of the gun cavity HOMs by the fundamental power coupler (FPC) is found and discussed. Finally, the measured Q-values of the operational gun cavity without the ceramic-ferrite damper at superconducting temperatures are presented (C) 2015 The Authors. Published by Elsevier B.V. C1 [Hahn, H.; Ben-Zvi, I.; Belomestnykh, S.; Hammons, L.; Litvinenko, V.; Than, Y. R.; Todd, R.; Weiss, D.; Xu, Wencan] Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA. [Ben-Zvi, I.; Belomestnykh, S.; Litvinenko, V.] SUNY Stony Brook, Dept Phys & Astron, Stony Brook, NY 11794 USA. RP Hahn, H (reprint author), Brookhaven Natl Lab, Collider Accelerator Dept, Upton, NY 11973 USA. EM hahnh@bnl.gov NR 20 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 79 BP 1 EP 12 DI 10.1016/j.phpro.2015.11.056 PG 12 WC Physics, Applied SC Physics GA BF2YA UT WOS:000380509100001 ER PT S AU Bane, K Nantista, C Adolphsen, C Raubenheimer, T Saini, A Solyak, N Yakovlev, V AF Bane, Karl Nantista, Christopher Adolphsen, Chris Raubenheimer, Tor Saini, Arun Solyak, Nikolay Yakovlev, Vyacheslav BE Baboi, N Jones, R VanRienen, U Solyak, N Yakovlev, V TI Distribution of Heating from Untrapped HOM Radiation in the LCLS-II Cryomodules SO ICFA MINI WORKSHOP ON HIGH ORDER MODES IN SUPERCONDUCTING CAVITIES, HOMSC14 SE Physics Procedia LA English DT Proceedings Paper CT ICFA mini Workshop on High Order Modes in Superconducting Cavities, HOMSC14 CY JUL 14-16, 2014 CL BATAVIA, IL DE superconducting cavities; cryogenic heat load; impedance; wakefields; higher order modes AB The superconducting cavities in the CW linacs of LCLS-II will operate at 2 K, where cooling is very expensive. One source of heat is presented by the higher order mode (HOM) power deposited by the beam. Due to the very short bunch length, especially in the L3 region, the LCLS-II beam spectrum extends into the terahertz range. Ceramic absorbers, at 70 K between cryomodules, are meant to absorb much of this power. In this report we perform two kinds of calculations to estimate the effectiveness of the absorbers and the fractional power that remains to be removed at 2 K. Published by Elsevier B.V. C1 [Bane, Karl; Nantista, Christopher; Adolphsen, Chris; Raubenheimer, Tor] SLAC, Menlo Pk, CA 94025 USA. [Saini, Arun; Solyak, Nikolay; Yakovlev, Vyacheslav] FNAL, Batavia, IL 60510 USA. RP Bane, K (reprint author), SLAC, Menlo Pk, CA 94025 USA. EM kbane@slac.stanford.edu NR 6 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 79 BP 13 EP 20 DI 10.1016/j.phpro.2015.11.057 PG 8 WC Physics, Applied SC Physics GA BF2YA UT WOS:000380509100002 ER PT S AU Guo, JQ Wang, HP AF Guo, Jiquan Wang, Haipeng BE Baboi, N Jones, R VanRienen, U Solyak, N Yakovlev, V TI High Order Modes Survey and Mitigation of the CEBAF C100 Cryomodules SO ICFA MINI WORKSHOP ON HIGH ORDER MODES IN SUPERCONDUCTING CAVITIES, HOMSC14 SE Physics Procedia LA English DT Proceedings Paper CT ICFA mini Workshop on High Order Modes in Superconducting Cavities, HOMSC14 CY JUL 14-16, 2014 CL BATAVIA, IL DE Cryomodule; HOM; BBU; SRF cavities AB Ten new C100 cryomodules have been fabricated and installed for the CEBAF 12 GeV upgrade project in the past few years. The dipole high order modes (HOM) of these modules need to be controlled to avoid beam breakup (BBU) instability. Over the last few years, we surveyed the HOM for all the 80 cavities of the C100 modules in the Vertical Test Area (VTA), as well as in the JLAB Cryomodule Test Facility (CMTF) and the CEBAF tunnel. Additional measures such as waveguide filters were applied to reduce the quality factor of the out of spec modes. In addition, we also measured the fundamental mode passband (a.k.a. the same passband) of all the cavities. In this paper, we will present the HOM survey methodology and results from CMTF and CEBAF survey, as well as the same passband mode results. We will also discuss the causes and mitigation measures of the high Q modes. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Guo, Jiquan; Wang, Haipeng] JLAB, 12000 Jefferson Ave, Newport News, VA 23606 USA. RP Guo, JQ (reprint author), JLAB, 12000 Jefferson Ave, Newport News, VA 23606 USA. EM jguo@jlab.org NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 79 BP 30 EP 37 DI 10.1016/j.phpro.2015.11.059 PG 8 WC Physics, Applied SC Physics GA BF2YA UT WOS:000380509100004 ER PT S AU Vostrikov, A Sukhanov, A Yakovlev, V Solyak, N AF Vostrikov, A. Sukhanov, A. Yakovlev, V. Solyak, N. BE Baboi, N Jones, R VanRienen, U Solyak, N Yakovlev, V TI Cumulative HOM excitation and transition effects in LCLS-II SO ICFA MINI WORKSHOP ON HIGH ORDER MODES IN SUPERCONDUCTING CAVITIES, HOMSC14 SE Physics Procedia LA English DT Proceedings Paper CT ICFA mini Workshop on High Order Modes in Superconducting Cavities, HOMSC14 CY JUL 14-16, 2014 CL BATAVIA, IL AB LCLS-II is a proposed upgrade of the most powerful X-ray laser in the world built at SLAC National Accelerator Laboratory. When complete, multiple free electron laser (FEL) sections will be powered by a continuous wave superconducting radio frequency (SRF) electron linac. The vital parameters for FEL radiation quality are beam emittance and beam transverse position stability. Excitation of high order modes (HOM) in SRF niobium cavities leads to additional beam power dissipation through incoherent and coherent losses. Energy stored in HOM may cause cumulative effects - transverse and longitudinal position displacement of the center of bunches, which leads to transverse and longitudinal emittance dilution. Cumulative effects due to dipole HOM excitation in LCLS-II are analyzed. Transition HOM effects are caused by sudden changes (periodic or single case) in the beam bunch structure. Bunch center position disturbance due to transition HOM effects is estimated. Published by Elsevier B.V. C1 [Vostrikov, A.] Univ Chicago, Dept Phys, 5720 S Ellis Ave, Chicago, IL 60637 USA. [Vostrikov, A.; Sukhanov, A.; Yakovlev, V.; Solyak, N.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. RP Vostrikov, A (reprint author), Univ Chicago, Dept Phys, 5720 S Ellis Ave, Chicago, IL 60637 USA. EM vostrikov@uchicago.edu NR 5 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 79 BP 46 EP 53 DI 10.1016/j.phpro.2015.11.061 PG 8 WC Physics, Applied SC Physics GA BF2YA UT WOS:000380509100006 ER PT S AU Lunin, A Gonin, I Awida, M Khabiboulline, T Yakovlev, V Zholents, A AF Lunin, A. Gonin, I. Awida, M. Khabiboulline, T. Yakovlev, V. Zholents, A. BE Baboi, N Jones, R VanRienen, U Solyak, N Yakovlev, V TI Design of a Quasi-Waveguide Multicell Deflecting Cavity for the Advanced Photon Source SO ICFA MINI WORKSHOP ON HIGH ORDER MODES IN SUPERCONDUCTING CAVITIES, HOMSC14 SE Physics Procedia LA English DT Proceedings Paper CT ICFA mini Workshop on High Order Modes in Superconducting Cavities, HOMSC14 CY JUL 14-16, 2014 CL BATAVIA, IL DE SRF; HOM; deflecting cavity; beam rotation; crabbing; ghost modes; thermal quench; microphonics; waveguide; multicell AB This paper reports the design of a 2815 MHz Quasi-waveguide Multicell Resonator (called QMiR) being considered as a transverse RF deflecting cavity for the Advanced Photon Source's (APS) Short Pulse X-ray project. QMiR forms a trapped dipole mode inside a beam vacuum chamber, while High Order Modes (HOM) are heavily loaded. This results in a sparse HOM spectrum, makes HOM couplers unnecessary and allows simplifying the cavity mechanical design. The form of electrodes is optimized for producing 2 MV of deflecting voltage and keeping low peak surface electric and magnetic fields of 54 MV/m and 75 mT respectively. Results of detailed EM analysis, including HOM damping, thermal and mechanical calculations for proposed QMiR cavity are presented. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Lunin, A.; Gonin, I.; Awida, M.; Khabiboulline, T.; Yakovlev, V.] FNAL, Batavia, IL 60510 USA. [Zholents, A.] ANL, Argonne, IL 60439 USA. RP Lunin, A (reprint author), FNAL, Batavia, IL 60510 USA. EM lunin@fnal.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 79 BP 54 EP 62 DI 10.1016/j.phpro.2015.11.062 PG 9 WC Physics, Applied SC Physics GA BF2YA UT WOS:000380509100007 ER PT J AU Grun, P Hefty, S Sur, S Goodell, D Russell, RD Pritchard, H Squyres, JM AF Grun, Paul Hefty, Sean Sur, Sayantan Goodell, David Russell, Robert D. Pritchard, Howard Squyres, Jeffrey M. GP IEEE TI A Brief Introduction to the OpenFabrics Interfaces A New Network API for Maximizing High Performance Application Efficiency SO PROCEEDINGS 2015 IEEE 23RD ANNUAL SYMPOSIUM ON HIGH-PERFORMANCE INTERCONNECTS - HOTI 2015 LA English DT Proceedings Paper CT IEEE 23rd Annual Symposium on High-Performance Interconnects CY AUG 26-28, 2015 CL ORACLE, Santa Clara, CA SP IEEE, IEEE Comp Soc, Algo Log, Mellanox Technologies, Warthman Associates HO ORACLE DE fabric; interconnect; networking; interface AB OpenFabrics Interfaces (OFI) is a new family of application program interfaces that exposes communication services to middleware and applications. Libfabric is the first member of OFI and was designed under the auspices of the OpenFabrics Alliance by a broad coalition of industry, academic, and national labs partners over the past two years. Building and expanding on the goals and objectives of the verbs interface, libfabric is specifically designed to meet the performance and scalability requirements of high performance applications such as Message Passing Interface (MPI) libraries, Symmetric Hierarchical Memory Access (SHMEM) libraries, Partitioned Global Address Space (PGAS) programming models, Database Management Systems (DBMS), and enterprise applications running in a tightly coupled network environment. A key aspect of libfabric is that it is designed to be independent of the underlying network protocols as well as the implementation of the networking devices. This paper provides a brief discussion of the motivation for creating a new API, describes the novel requirements gathering process which drove its design, and summarizes the API's high-level architecture and design. C1 [Grun, Paul] Cray Inc, Eagan, MN 55121 USA. [Hefty, Sean; Sur, Sayantan] Intel Corp, Santa Clara, CA 95051 USA. [Goodell, David; Squyres, Jeffrey M.] Cisco Syst Inc, San Jose, CA USA. [Russell, Robert D.] UNH InterOperabil Lab, Durham, NH USA. [Pritchard, Howard] Los Alamos Natl Lab, Los Alamos, NM USA. RP Grun, P (reprint author), Cray Inc, Eagan, MN 55121 USA. EM grun@cray.com; sean.hefty@intel.com; sayantan.sur@intel.com; dgoodell@cisco.com; rdr@iol.unh.edu; howardp@lanl.gov; jsquyres@cisco.com NR 5 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9160-3 PY 2015 BP 34 EP 39 DI 10.1109/HOTI.2015.19 PG 6 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2JQ UT WOS:000380473500005 ER PT J AU Shamis, P Venkata, MG Lopez, MG Baker, MB Hernandez, O Itigin, Y Dubman, M Shainer, G Graham, RL Liss, L Shahar, Y Potluri, S Rossetti, D Becker, D Poole, D Lamb, C Kumar, S Stunkel, C Bosilca, G Bouteiller, A AF Shamis, Pavel Venkata, Manjunath Gorentla Lopez, M. Graham Baker, Matthew B. Hernandez, Oscar Itigin, Yossi Dubman, Mike Shainer, Gilad Graham, Richard L. Liss, Liran Shahar, Yiftah Potluri, Sreeram Rossetti, Davide Becker, Donald Poole, Duncan Lamb, Christopher Kumar, Sameer Stunkel, Craig Bosilca, George Bouteiller, Aurelien GP IEEE TI UCX: An Open Source Framework for HPC Network APIs and Beyond SO PROCEEDINGS 2015 IEEE 23RD ANNUAL SYMPOSIUM ON HIGH-PERFORMANCE INTERCONNECTS - HOTI 2015 LA English DT Proceedings Paper CT IEEE 23rd Annual Symposium on High-Performance Interconnects CY AUG 26-28, 2015 CL ORACLE, Santa Clara, CA SP IEEE, IEEE Comp Soc, Algo Log, Mellanox Technologies, Warthman Associates HO ORACLE AB This paper presents Unified Communication X (UCX), a set of network APIs and their implementations for high throughput computing. UCX comes from the combined effort of national laboratories, industry, and academia to design and implement a high-performing and highly-scalable network stack for next generation applications and systems. UCX design provides the ability to tailor its APIs and network functionality to suit a wide variety of application domains and hardware. We envision these APIs to satisfy the networking needs of many programming models such as Message Passing Interface (MPI), OpenSHMEM, Partitioned Global Address Space (PGAS) languages, task-based paradigms and I/O bound applications. To evaluate the design we implement the APIs and protocols, and measure the performance of overhead-critical network primitives fundamental for implementing many parallel programming models and system libraries. Our results show that the latency, bandwidth, and message rate achieved by the portable UCX prototype is very close to that of the underlying driver. With UCX, we achieved a message exchange latency of 0.89 us, a bandwidth of 6138.5 MB/s, and a message rate of 14 million messages per second. As far as we know, this is the highest bandwidth and message rate achieved by any network stack (publicly known) on this hardware. C1 [Shamis, Pavel; Venkata, Manjunath Gorentla; Lopez, M. Graham; Baker, Matthew B.; Hernandez, Oscar] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Itigin, Yossi; Dubman, Mike; Shainer, Gilad; Graham, Richard L.; Liss, Liran; Shahar, Yiftah] Mellanox Technol, Yokneam Illit, Israel. [Potluri, Sreeram; Rossetti, Davide; Becker, Donald; Poole, Duncan; Lamb, Christopher] NVIDIA Corp, Santa Clara, CA USA. [Kumar, Sameer; Stunkel, Craig] IBM Corp, Armonk, NY USA. [Bosilca, George; Bouteiller, Aurelien] Univ Tennessee, Knoxville, TN USA. RP Shamis, P (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. OI Lopez, Graham/0000-0002-5375-2105 NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9160-3 PY 2015 BP 40 EP 43 DI 10.1109/HOTI.2015.13 PG 4 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2JQ UT WOS:000380473500006 ER PT S AU Aslam, T Dattelbaum, D Gustavsen, R Scharff, R Byers, M AF Aslam, Tariq Dattelbaum, Dana Gustavsen, Richard Scharff, Robert Byers, Mark BE Schonberg, WP TI Asymmetric Material Impact: Achieving Free Surfaces Velocities Nearly Double That of the Projectile SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE Gas gun; free surface velocity; asymmetric material impact AB Hypervelocity impact speeds are often limited by practical considerations in guns and explosive driven systems. In particular, for gas guns (both powder driven and light gas guns), there is the general trend that higher projectile speeds often come at the expense of smaller diameters, and thus less time for examining shock phenomena prior to two dimensional release waves affecting the observed quantities of interest. Similarly, explosive driven systems have their own set of limiting conditions due to limitations in explosive energy and size of devices required as engineering dimensions increase. The focus in this study is to present a methodology of obtaining free surface velocities well in excess of the projectile velocity. The key to this approach is in using a high impedance projectile that impacts a series of progressively lower impedance materials. The free surface velocity (if they were separated) of each of the progressively lower impedance materials would increase for each material. The theory behind this approach, as well as experimental results, are presented. (C) 2015 The Authors. Published by Elsevier Ltd. C1 [Aslam, Tariq; Dattelbaum, Dana; Gustavsen, Richard; Scharff, Robert; Byers, Mark] Los Alamos Natl Lab, MS P952, Los Alamos, NM 87545 USA. RP Aslam, T (reprint author), Los Alamos Natl Lab, MS P952, Los Alamos, NM 87545 USA. EM aslam@lanl.gov OI Aslam, Tariq/0000-0002-4263-0401; Gustavsen, Richard/0000-0002-2281-2742 NR 4 TC 0 Z9 0 U1 1 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 12 EP 18 DI 10.1016/j.proeng.2015.04.003 PG 7 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200002 ER PT S AU Boslough, M Jennings, B Carvey, B Fogleman, W AF Boslough, Mark Jennings, Barbara Carvey, Brad Fogleman, William BE Schonberg, WP TI FEMA Asteroid Impact Tabletop Exercise Simulations SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE Asteroid; impact; airburst; near earth object; infrastructure AB We describe the computational simulations and damage assessments that we provided in support of a tabletop exercise (TTX) at the request of NASA's Near-Earth Objects Program Office. The overall purpose of the exercise was to assess leadership reactions, information requirements, and emergency management responses to a hypothetical asteroid impact with Earth. The scripted exercise consisted of discovery, tracking, and characterization of a hypothetical asteroid; inclusive of mission planning, mitigation, response, impact to population, infrastructure and GDP, and explicit quantification of uncertainty. Participants at the meeting included representatives of NASA, Department of Defense, Department of State, Department of Homeland Security/Federal Emergency Management Agency (FEMA), and the White House. The exercise took place at FEMA headquarters. Sandia's role was to assist the Jet Propulsion Laboratory (JPL) in developing the impact scenario, to predict the physical effects of the impact, and to forecast the infrastructure and economic losses. We ran simulations using Sandia's CTH hydrocode to estimate physical effects on the ground, and to produce contour maps indicating damage assessments that could be used as input for the infrastructure and economic models. We used the FASTMap tool to provide estimates of infrastructure damage over the affected area, and the REAcct tool to estimate the potential economic severity expressed as changes to GDP (by nation, region, or sector) due to damage and short-term business interruptions. (C) 2015 Published by Elsevier Ltd. C1 [Boslough, Mark; Jennings, Barbara] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Carvey, Brad] DrumFire, Albuquerque, NM 87122 USA. [Fogleman, William] Georelat Informat Technol GRIT Inc, Albuquerque, NM 87111 USA. RP Boslough, M (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 5 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 43 EP 51 DI 10.1016/j.proeng.2015.04.007 PG 9 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200006 ER PT S AU Crawford, DA AF Crawford, David A. BE Schonberg, WP TI Computational Modeling of Electrostatic Charge and Fields Produced by Hypervelocity Impact SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE magnetic field; electric field; plasma; hypervelocity impact ID GENERATED MAGNETIC-FIELDS; PLASMA AB Following prior experimental evidence of electrostatic charge separation, electric and magnetic fields produced by hypervelocity impact, we have developed a model of electrostatic charge separation based on plasma sheath theory and implemented it into the CTH shock physics code. Preliminary assessment of the model shows good qualitative and quantitative agreement between the model and prior experiments at least in the hypervelocity regime for the porous carbonate material tested. Moreover, the model agrees with the scaling analysis of experimental data performed in the prior work, suggesting that electric charge separation and the resulting electric and magnetic fields can be a substantial effect at larger scales, higher impact velocities, or both. (C) 2015 Published by Elsevier Ltd. C1 [Crawford, David A.] Sandia Natl Labs, POB 5800,MS 0840, Albuquerque, NM 87185 USA. RP Crawford, DA (reprint author), Sandia Natl Labs, POB 5800,MS 0840, Albuquerque, NM 87185 USA. EM dacrawf@sandia.gov NR 14 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 89 EP 96 DI 10.1016/j.proeng.2015.04.013 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200012 ER PT S AU Ezzedine, SM Lomov, I Miller, PL Dennison, DS Dearborn, DS Antoun, TH AF Ezzedine, Souheil M. Lomov, Ilya Miller, Paul L. Dennison, Deborah S. Dearborn, David S. Antoun, Tarabay H. BE Schonberg, WP TI Simulation of Asteroid Impact on Ocean Surfaces, Subsequent Wave Generation and the Effect on US Shorelines SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE asteroid; water wave; numerical simulation; shoreline; tabletop exercise ID DIRECTIONAL TENSILE FAILURE; ELASTIC-VISCOPLASTIC MODEL AB As part of a larger effort involving members of several other organizations, we have conducted numerical simulations in support of emergency-response exercises of postulated asteroid ocean impacts. We have addressed the problem from source (asteroid entry) to ocean impact (splash) to wave generation, propagation and interaction with the U.S. shoreline. We simulated three impact sites. The first site is located off the east coast by Maryland's shoreline. The second site is located off of the West coast, the San Francisco bay. The third set of sites are situated in the Gulf of Mexico. Asteroid impacts on the ocean surface are conducted using LLNL's hydrocode GEODYN to create the impact wave source for the shallow water wave propagation code, SWWP, a shallow depth averaged water wave code. The GEODYN-SWWP coupling offers unique capabilities to address the full scale interactions of asteroids with the ocean and the interactions of the water waves with the shorelines. (C) 2015 Published by Elsevier Ltd. C1 [Ezzedine, Souheil M.; Lomov, Ilya; Miller, Paul L.; Dennison, Deborah S.; Dearborn, David S.; Antoun, Tarabay H.] Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA. RP Ezzedine, SM (reprint author), Lawrence Livermore Natl Lab, 7000 East Ave, Livermore, CA 94550 USA. EM ezzedine1@llnl.gov NR 19 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 113 EP 120 DI 10.1016/j.proeng.2015.04.016 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200015 ER PT S AU Fenton, G Asay, B Dalton, D AF Fenton, Gregg Asay, Blaine Dalton, Devon BE Schonberg, WP TI Impact Compaction of a Granular Material SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE equation of state; porous materials; numerical modeling; dynamic compaction; rigidax ID HETERODYNE TECHNIQUES AB The dynamic behavior of granular materials has importance to a variety of engineering applications. Structural seismic coupling, planetary science, and earth penetration mechanics, are just a few of the application areas. Although the mechanical behavior of granular materials of various types have been studied extensively for several decades, the dynamic behavior of such materials remains poorly understood. High-quality experimental data are needed to improve our general understanding of granular material compaction physics. This paper will describe how an instrumented plunger impact system can be used to measure pressure-density relationships for model materials at high and controlled strain rates and subsequently used for computational modeling. (C) 2015 Published by Elsevier Ltd. C1 [Fenton, Gregg] Appl Res Associates, 4300 San Mateo Blvd NE, Albuquerque, NM 87110 USA. [Asay, Blaine] Spring Hill Energet, Atchison, KS 66002 USA. [Dalton, Devon] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Fenton, G (reprint author), Appl Res Associates, 4300 San Mateo Blvd NE, Albuquerque, NM 87110 USA. EM gfenton@ara.com NR 14 TC 0 Z9 0 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 121 EP 128 DI 10.1016/j.proeng.2015.04.017 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200016 ER PT S AU Grady, D AF Grady, Dennis BE Schonberg, WP TI The Unifying Role of Dissipative Action in the Dynamic Failure of Solids SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE shock wave; compaction; spall; adiabatic shear; action ID WAVE SHOCK COMPRESSION; ADIABATIC SHEAR BANDS; FRAGMENTATION; VISCOSITY; SPALL AB Dissipative action, the product of dissipation energy and transport time, is fundamental to the dynamic failure of solids. Invariance of the dissipative action underlies the fourth-power nature of structured shock waves observed in selected solid metals and compounds. Dynamic failure through shock compaction, tensile spall and adiabatic shear are also governed by a constancy of the dissipative action. This commonality underlying the various modes of dynamic failure is described and leads to deeper insights into failure of solids in the intense shock wave event. These insights in turn are leading to a better understanding of the shock deformation processes underlying the fourth-power law. Experimental result and material models encompassing the dynamic failure of solids are explored for the purpose of demonstrating commonalities leading to invariance of the dissipation action. Calculations are extended to aluminum and uranium metals with the intent of predicting micro-scale energetics and spatial scales in the structured shock wave. (C) 2015 Published by Elsevier Ltd. C1 [Grady, Dennis] Appl Res Associates, 4300 San Mateo Blvd NE, Albuquerque, NM 87110 USA. [Grady, Dennis] Sandia Natl Labs, Livermore, CA 94551 USA. RP Grady, D (reprint author), Appl Res Associates, 4300 San Mateo Blvd NE, Albuquerque, NM 87110 USA. EM dgrady@ara.com NR 31 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 143 EP 150 DI 10.1016/j.proeng.2015.04.020 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200019 ER PT S AU Herbold, EB Owen, JM Swift, DC Miller, PL AF Herbold, E. B. Owen, J. M. Swift, D. C. Miller, P. L. BE Schonberg, WP TI Simulations of Defense Strategies for Bennu: Material Characterization and Impulse Delivery SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE Bennu; constitutive modeling; material characterization; asteroid deflection; Eulerian hydrocode ID CARBONACEOUS CHONDRITE; PLANETARY ACCRETION; GRANULAR-MATERIALS; LOWER MANTLE; RUBBLE-PILE; SHOCK; METEORITE; POROSITY; MODEL; DENSITY AB Assessments of asteroid deflection strategies depend on material characterization to reduce the uncertainty in predictions of the deflection velocity resulting from impulsive loading. In addition to strength, equation of state, the initial state of the material including its competency (i.e. fractured or monolithic) and the amount of micro-or macroscopic porosity are important considerations to predict the thermomechanical response. There is recent interest in observing near-Earth asteroid (101955) Bennu due to its classification of being potentially hazardous with close approaches occurring every 6 years. Bennu is relatively large with a nominal diameter of 492 m, density estimates ranging from 0.9-1.26 g/cm(3) and is composed mainly of carbonaceous chondrite. There is a lack of data for highly porous carbonaceous chondrite at very large pressures and temperatures. In the absence of the specific material composition and state (e.g. layering, porosity as a function of depth) on Bennu we introduce a continuum constitutive model based on the response of granular materials and provide impact and standoff explosion simulations to investigate the response of highly porous materials to these types of impulsive loading scenarios. Simulations with impact speeds of 5 km/s show that the shock wave emanating from the impact site is highly dispersive and that a 10% porous material has a larger compacted volume compared with a 40% porous material with the same bulk density due to differences in compaction response. A three-dimensional simulation of a 190 kT standoff explosion 160 m off the surface of a shape model of Bennu estimated a deflection velocity of 10 cm/s. (C) 2015 Published by Elsevier Ltd. C1 [Herbold, E. B.; Owen, J. M.; Swift, D. C.; Miller, P. L.] Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. RP Herbold, EB (reprint author), Lawrence Livermore Natl Lab, POB 808, Livermore, CA 94551 USA. RI Herbold, Eric/G-3432-2011 OI Herbold, Eric/0000-0002-9837-1824 NR 36 TC 1 Z9 1 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 173 EP 180 DI 10.1016/j.proeng.2015.04.024 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200023 ER PT S AU Owen, JM Miller, P Rovny, J Wasem, J Howley, K Herbold, EB AF Owen, J. Michael Miller, Paul Rovny, Jared Wasem, Joe Howley, Kirsten Herbold, Eric B. BE Schonberg, WP TI Asteroid diversion considerations and comparisons of diversion techniques SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE asteroid; hazard mitigation; simulations; failure and fracture modeling ID PARTICLE HYDRODYNAMICS; SIMULATIONS; FRACTURE; IMPACT; SPH AB The threat of asteroid impacts on Earth poses a low-probability but high consequence risk, with possible outcomes ranging from regional to global catastrophe. However, unique amongst such global threats we have the capability of averting such disasters. Diversion approaches by either kinetic impactor or nuclear energy deposition are the two most practical technologies for mitigating hazardous near Earth asteroids. One of the greatest challenges in understanding our options is the uncertain response of asteroids to such impulsive techniques, due both to our lack of knowledge of the composition and structure of these objects as well as their highly varied nature. Predicting whether we will simply divert or break up a given object is a crucial: the weak self-gravity and inferred weak structure of typical asteroids present the strong possibility the body will fragment for modest impulses. Predictive modeling of failure and fragmentation is one important tool for such studies. In this paper we apply advances in modeling failure and fracture using Adaptive Smoothed Particle Hydrodynamics (ASPH) to understand mega-cratering on asteroids as a validation exercise, and show examples of diverting the near Earth asteroid Bennu using both a kinetic impactor and ablative blow-off due to nuclear energy deposition. (C) 2015 The Authors. Published by Elsevier Ltd. C1 [Owen, J. Michael; Miller, Paul; Rovny, Jared; Wasem, Joe; Howley, Kirsten; Herbold, Eric B.] Lawrence Livermore Natl Lab, L-38,POB 808, Livermore, CA 94550 USA. [Rovny, Jared] Yale Univ, Dept Phys, New Haven, CT 06511 USA. RP Owen, JM (reprint author), Lawrence Livermore Natl Lab, L-38,POB 808, Livermore, CA 94550 USA. EM mikeowen@llnl.gov RI Herbold, Eric/G-3432-2011 OI Herbold, Eric/0000-0002-9837-1824 NR 16 TC 1 Z9 1 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 466 EP 474 DI 10.1016/j.proeng.2015.04.061 PG 9 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200060 ER PT S AU Quintana, SN Crawford, DA Schultz, PH AF Quintana, S. N. Crawford, D. A. Schultz, P. H. BE Schonberg, WP TI Analysis of Impact Melt and Vapor Production in CTH for Planetary Applications SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE impact melt; impact vaporization; CTH; hydrocode ID VAPORIZATION; DEFORMATION AB This paper explores impact melt and vapor generation for a variety of impact speeds and materials using the shock physics code CTH. The study first compares the results of two common methods of impact melt and vapor generation to demonstrate that both the peak pressure method and final temperature method are appropriate for high-speed impact models (speeds greater than 10 km/s). However, for low-speed impact models (speeds less than 10 km/s), only the final temperature method is consistent with laboratory analyses to yield melting and vaporization. Finally, a constitutive model for material strength is important for low-speed impacts because strength can cause an increase in melting and vaporization. (C) 2015 The Authors. Published by Elsevier Ltd. C1 [Quintana, S. N.; Schultz, P. H.] Brown Univ, Dept Earth Environm & Planetary Sci, 324 Brook St, Providence, RI 02912 USA. [Crawford, D. A.] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Quintana, SN (reprint author), Brown Univ, Dept Earth Environm & Planetary Sci, 324 Brook St, Providence, RI 02912 USA. EM stephanie_quintana@brown.edu NR 37 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 499 EP 506 DI 10.1016/j.proeng.2015.04.065 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200064 ER PT S AU Stickle, AM Atchison, JA Barnouin, OS Cheng, AF Crawford, DA Ernst, CM Fletcher, Z Rivkin, AS AF Stickle, A. M. Atchison, J. A. Barnouin, O. S. Cheng, A. F. Crawford, D. A. Ernst, C. M. Fletcher, Z. Rivkin, A. S. BE Schonberg, WP TI Modeling Momentum Transfer from Kinetic Impacts: Implications for Redirecting Asteroids SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE Kinetic Impactors; CTH models; Didymos; AIDA mission concept AB Kinetic impactors are one way to deflect a potentially hazardous object headed for Earth. The Asteroid Impact and Deflection Assessment (AIDA) mission is designed to test the effectiveness of this approach and is a joint effort between NASA and ESA. The NASA-led portion is the Double Asteroid Redirect Test (DART) and is composed of a similar to 300-kg spacecraft designed to impact the moon of the binary system 65803 Didymos. The deflection of the moon will be measured by the ESA-led Asteroid Impact Mission (AIM) (which will characterize the moon) and from ground-based observations. Because the material properties and internal structure of the target are poorly constrained, however, analytical models and numerical simulations must be used to understand the range of potential outcomes. Here, we describe a modeling effort combining analytical models and CTH simulations to determine possible outcomes of the DART impact. We examine a wide parameter space and provide predictions for crater size, ejecta mass, and momentum transfer following the impact into the moon of the Didymos system. For impacts into "realistic" asteroid types, these models produce craters with ldiameters on the order of 10 m, an imparted Delta v of 0.5-2 mm/s and a momentum enhancement of 1.07 to 5 for a highly porous aggregate to a fully dense rock. (C) 2015 The Authors. Published by Elsevier Ltd. C1 [Stickle, A. M.; Atchison, J. A.; Barnouin, O. S.; Cheng, A. F.; Ernst, C. M.; Fletcher, Z.; Rivkin, A. S.] Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD 20723 USA. [Crawford, D. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Stickle, AM (reprint author), Johns Hopkins Univ, Appl Phys Lab, Johns Hopkins Rd, Laurel, MD 20723 USA. EM angela.stickle@jhuapl.edu RI Barnouin, Olivier/I-7475-2015; OI Barnouin, Olivier/0000-0002-3578-7750; Rivkin, Andrew/0000-0002-9939-9976 NR 10 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 577 EP 584 DI 10.1016/j.proeng.2015.04.075 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200074 ER PT S AU Zellner, MB Becker, R Dandekar, DP Leavy, RB Patel, PJ Team, P AF Zellner, Michael B. Becker, Richard Dandekar, Dattatraya P. Leavy, Richard B. Patel, Parimal J. Team, Prad BE Schonberg, WP TI Shaped Charge Jet Penetration of Alon (R) Ceramic Assessed by Proton Radiography and Computational Simulations SO PROCEEDINGS OF THE 2015 HYPERVELOCITY IMPACT SYMPOSIUM (HVIS 2015) SE Procedia Engineering LA English DT Proceedings Paper CT Proceedings of the 2015 Hypervelocity Impact Symposium (HVIS) CY APR 26-30, 2015 CL Boulder, CO DE Ceramic; ALON; Shaped charge jet; Kayenta; ALEGRA; continuum simulation; Proton Radiography ID TARGETS AB This work describes the use of proton radiography and continuum simulations to investigate the mechanics of a copper jet penetrating unconfined ALON (R) transparent ceramic. Use of proton radiography enabled characterization of the jet and ceramic material at 21 time steps, in situ, throughout the penetration process. These radiographs provide time-evolution data pertaining to the material densities, cavity growth, and material failure. The data were compared to legacy analytical penetration models and to a simulation of the event computed using a continuum multi-physics code. These comparisons revealed additional insights into the penetration mechanics as well as strengths and weaknesses of the computational algorithms and material models used in the simulations. Published by Elsevier Ltd. C1 [Zellner, Michael B.] US Army Res Lab, Attn RDRL WMP D, Aberdeen Proving Ground, MD 21005 USA. [Becker, Richard; Dandekar, Dattatraya P.; Leavy, Richard B.] US Army Res Lab, Attn RDRL WMP C, Aberdeen Proving Ground, MD 21005 USA. [Patel, Parimal J.] US Army Res Lab, Attn RDRL WMM E, Aberdeen Proving Ground, MD 21005 USA. [Team, Prad] Los Alamos Natl Lab, Los Alamos, NM USA. RP Zellner, MB (reprint author), US Army Res Lab, Attn RDRL WMP D, Aberdeen Proving Ground, MD 21005 USA. EM michael.b.zellner.civ@mail.mil NR 22 TC 1 Z9 1 U1 2 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1877-7058 J9 PROCEDIA ENGINEER PY 2015 VL 103 BP 663 EP 670 DI 10.1016/j.proeng.2015.04.086 PG 8 WC Engineering, Multidisciplinary SC Engineering GA BF3FJ UT WOS:000380535200085 ER PT J AU Burckel, DB Resnick, PJ Draper, BL Finnegan, PS Davids, P AF Burckel, D. Bruce Resnick, Paul J. Draper, Bruce L. Finnegan, Patrick S. Davids, Paul GP IEEE TI Device Level 3-Dimensional ICs Membrane Projection Lithography for Advanced Manufacturing SO PROCEEDINGS OF THE 2015 IEEE INTERNATIONAL CONFERENCE ON ELECTRON DEVICES AND SOLID-STATE CIRCUITS (EDSSC) LA English DT Proceedings Paper CT IEEE International Conference on Electron Devices and Solid-State Circuits (EDSSC) CY JUN 01-04, 2015 CL Singapore, INDIA SP IEEE, IEEE Singapore Sect, IEEE Hong Kong Sect, ELECTION DEVICES SOC DE 3DIC; fabrication; advanced interconnects ID METAMATERIAL; CRYSTALS AB Membrane projection lithography (MPL) is proposed as a method for creation of 3-dimensional integrated circuits at the device level as opposed to stacking 2-D die. In MPL, standard semiconductor fabrication processes and equipment are used in a novel sequence of processing steps to create 3 dimensional micrometer-scale structures. Generalization of MPI, from strictly deposition to ion implantation and dry etching, combined with blanket processes such as CVD deposition and oxidation, provide all the necessary ingredients for fabrication of integrated circuit devices in all three coordinate axes in high topography silicon. C1 [Burckel, D. Bruce; Resnick, Paul J.; Draper, Bruce L.; Finnegan, Patrick S.; Davids, Paul] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Burckel, DB (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM dbburck@sandia.gov NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8364-3 PY 2015 BP 379 EP 382 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF2DS UT WOS:000380458700096 ER PT S AU Schoenherr, TF AF Schoenherr, Tyler F. BE Wicks, A TI Calculating the Impact Force of Supersonic Hail Stones Using SWAT-TEEM SO SHOCK & VIBRATION, AIRCRAFT/AEROSPACE, AND ENERGY HARVESTING, VOL 9 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT 33rd IMAC Conference and Exposition on Structural Dynamics CY FEB 02-05, 2015 CL Orlando, FL SP IMAC, Soc Experimental Mech DE Hail; Force; Impact; SWAT; Ice AB In the aerospace industry, hail strikes on a structure are an environment that must be considered when qualifying a product. Performing a physical test on a product would require a test setup that would launch a fabricated hail stone at an expensive prototype. This test may be difficult or impossible to execute and destructive to the product. Instead of testing, a finite element model (FEM) may be used to simulate the damage and consequences of a hail strike. In order to use a FEM in this way, an accurate representation of the input force from a hail stone must be known. The purpose of this paper is to calculate the force that a hail stone imparts on an object using the inverse method SWAT-TEEM. This paper discusses the advantages of using SWAT-TEEM over other force identification methods and exercises the algorithm for a test series of hail strikes that include multiple angles of attack and multiple velocities which include speeds that are supersonic. C1 [Schoenherr, Tyler F.] Sandia Natl Labs, Expt Mech NDE & Model Validat Dept, POB 5800,MS0557, Albuquerque, NM 87185 USA. RP Schoenherr, TF (reprint author), Sandia Natl Labs, Expt Mech NDE & Model Validat Dept, POB 5800,MS0557, Albuquerque, NM 87185 USA. EM schoenherr.tyler@gmail.com NR 8 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-15233-2; 978-3-319-15232-5 J9 C PROC SOC EXP MECH PY 2015 BP 67 EP 79 DI 10.1007/978-3-319-15233-2_9 PG 13 WC Engineering, Aerospace; Energy & Fuels; Engineering, Mechanical SC Engineering; Energy & Fuels GA BF3LJ UT WOS:000380553900009 ER PT S AU Fisher, CL Kliewer, KS Naranjo, GM Taylor, SG Van Buren, K AF Fisher, Cassidy L. Kliewer, Kaitlyn S. Naranjo, Gregory M. Taylor, Stuart G. Van Buren, Kendra BE Wicks, A TI Mechanical Shock Environment Synthesis for Structural Failure Elicitation SO SHOCK & VIBRATION, AIRCRAFT/AEROSPACE, AND ENERGY HARVESTING, VOL 9 SE Conference Proceedings of the Society for Experimental Mechanics Series LA English DT Proceedings Paper CT 33rd IMAC Conference and Exposition on Structural Dynamics CY FEB 02-05, 2015 CL Orlando, FL SP IMAC, Soc Experimental Mech DE Mechanical shock environment; Shock response spectra (SRS); Shock synthesis; Qualification testing; Test-analysis correlation AB Shock Response Spectra (SRS) are commonly used in dynamic testing to describe the mechanical environment in high-energy, non-stationary events, such as impacts or pyrotechnic shocks. Oftentimes, the service environment to which a structure will be exposed is difficult to reproduce in the laboratory, but design engineers desire a laboratory screening test to determine whether the structure will survive an anticipated shock environment. Herein, a combined experimental and numerical study is pursued to evaluate the efficacy of different methods to elicit failure modes of a service shock through destructive shaker tests of a custom-designed test article fabricated using commercially available 3-D printers. Design of the test article is explored through use of finite element modeling, which is found to correlate well to experimentally-obtained natural frequencies. Four techniques to synthesize a service shock are compared: least favorable response, sum of decaying sinusoids, wavelet, and matching temporal moments. Destructive shaker tests of the shock responses are performed using 25 nominally identical test articles to assess the ability of each method to impose similar damage states as those obtained when using the service shock. We find that the method of matching temporal moments best replicates failure modes of the service shock; however, further testing is needed to validate our observations. C1 [Fisher, Cassidy L.] Montana State Univ, Dept Mech Engn, Bozeman, MT 59717 USA. [Kliewer, Kaitlyn S.] Princeton Univ, Dept Civil Engn, Princeton, NJ 08544 USA. [Naranjo, Gregory M.] Univ New Mexico, Dept Mech Engn, Albuquerque, NM 87131 USA. [Taylor, Stuart G.; Van Buren, Kendra] Los Alamos Natl Lab, Engn Inst, Los Alamos, NM 87545 USA. RP Taylor, SG (reprint author), Los Alamos Natl Lab, Engn Inst, Los Alamos, NM 87545 USA. EM sgtaylor@lanl.gov OI Van Buren, Kendra/0000-0002-0495-2354 NR 9 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2191-5644 BN 978-3-319-15233-2; 978-3-319-15232-5 J9 C PROC SOC EXP MECH PY 2015 BP 175 EP 185 DI 10.1007/978-3-319-15233-2_19 PG 11 WC Engineering, Aerospace; Energy & Fuels; Engineering, Mechanical SC Engineering; Energy & Fuels GA BF3LJ UT WOS:000380553900019 ER PT J AU Matlashov, A Magnelind, P Newman, S Sandin, H Urbaitis, A Volegov, P Espy, M AF Matlashov, Andrei Magnelind, Per Newman, Shaun Sandin, Henrik Urbaitis, Algis Volegov, Petr Espy, Michelle GP IEEE TI Multi-channel SQUID-based Ultra-Low Field Magnetic Resonance Imaging in Unshielded Environment SO 2015 15TH INTERNATIONAL SUPERCONDUCTIVE ELECTRONICS CONFERENCE (ISEC) LA English DT Proceedings Paper CT 15th International Superconductive Electronics Conference (ISEC) CY JUL 06-09, 2015-2019 CL Nagoya, JORDAN SP ISEC, JAPAN SOC PROMOTIONAL SCI, MURATA SCI FDN, NAGOYA UNIV, IEEE COUNCIL SUPERCONDUCTIVITY, TAIYO DENSHI KK DE ULF MRI; SQUID; shielding; noise compensation ID MICROTESLA AB Magnetic Resonance Imaging (MRI) is the best method for non-invasive imaging of soft tissue anatomy. A conventional MRI relies on 1.5-3 T fixed strength magnetic fields, with parts-per-million homogeneity, requiring large and expensive magnets. MRI can be done at ultra-low magnetic fields (ULF) with Larmor frequencies of a few kHz with much more modest magnetic system requirements. However the ULF regime requires a very sensitive detection system. A candidate detection system is based on SQUID gradiometers. A conventional SQUID gradiometer based detection system requires effective shielding from all ambient electromagnetic noise. Large shielded structures, such as magnetically shielded or eddy-current rooms, can be used for proof-of-principles experiments but do not lead to practical deployable instruments. Our goal is to develop a technique in which a SQUID-based detector array could be deployed without the limitation imposed by the requirement for a shielded structure. We have tested a 7-channel ULF MRI system located in unshielded environment inside a modern physics laboratory. It was possible to significantly suppress most of the electromagnetic interference by subtracting the signal from a one-channel reference magnetometer located nearby. We believe that the influence of the pre-polarization coil produces kHzrange frequency noise in gradiometer channels that is very well correlated with the signal from the magnetometer. C1 [Matlashov, Andrei; Magnelind, Per; Newman, Shaun; Sandin, Henrik; Urbaitis, Algis; Volegov, Petr; Espy, Michelle] Los Alamos Natl Lab, Dept Phys, Appl Modern Phys Grp, Los Alamos, NM 87544 USA. RP Matlashov, A (reprint author), Los Alamos Natl Lab, Dept Phys, Appl Modern Phys Grp, Los Alamos, NM 87544 USA. EM matlach@lanl.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8348-6 PY 2015 PG 3 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BF1FO UT WOS:000380391200047 ER PT J AU Matlashov, A Magnelind, P Volegov, P Espy, M AF Matlashov, Andrei Magnelind, Per Volegov, Peter Espy, Michelle GP IEEE TI Elimination of 1/f Noise in Gradiometers for SQUID-based Ultra-Low Field Nuclear Magnetic Resonance SO 2015 15TH INTERNATIONAL SUPERCONDUCTIVE ELECTRONICS CONFERENCE (ISEC) LA English DT Proceedings Paper CT 15th International Superconductive Electronics Conference (ISEC) CY JUL 06-09, 2015-2019 CL Nagoya, JORDAN SP ISEC, JAPAN SOC PROMOTIONAL SCI, MURATA SCI FDN, NAGOYA UNIV, IEEE COUNCIL SUPERCONDUCTIVITY, TAIYO DENSHI KK DE Ta; thermo-cycling; pulsed-field; flux-trapping AB Superconducting wire may trap magnetic flux after being exposed to strong magnetic fields, for example when used as gradiometer material in a SQUID-based ultra-low field nuclear magnetic resonance system. In this work we investigated noise caused by the dynamics of trapped flux in superconducting gradiometers made from different materials. Niobium (Nb), niobium-titanium (NbTi), and tantalum (Ta) wires were tested. Small wire-wound gradiometers were connected to a SQUID sensor. Nb and NbTi wires showed increasing 1/f noise after exposure to magnetic fields of 5 mT and above. A larger second-order gradiometer made of Ta wire was tested inside a magnetically shielded room. A heating wire was placed on the outside of the Ta wire. Thermo-cycling of the Ta gradiometer significantly decreased the 1/f noise caused by its exposure to a magnetic field. C1 [Matlashov, Andrei; Magnelind, Per; Volegov, Peter; Espy, Michelle] Los Alamos Natl Lab, Dept Phys, Appl Modern Phys Grp, Los Alamos, NM 87545 USA. RP Matlashov, A (reprint author), Los Alamos Natl Lab, Dept Phys, Appl Modern Phys Grp, Los Alamos, NM 87545 USA. EM matlach@lanl.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8348-6 PY 2015 PG 3 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BF1FO UT WOS:000380391200029 ER PT J AU Ceylan, O Liu, GD Tomsovic, K AF Ceylan, Oguzhan Liu, Guodong Tomsovic, Kevin GP IEEE TI Parallel Harmony Search Based Distributed Energy Resource Optimization SO 2015 18TH INTERNATIONAL CONFERENCE ON INTELLIGENT SYSTEM APPLICATION TO POWER SYSTEMS (ISAP) LA English DT Proceedings Paper CT 2015 18th International Conference on Intelligent System Application to Power Systems (ISAP) CY SEP 11-17, 2015 CL Porto, PORTUGAL SP Distribuicao, Inesctec Technol & Sci Associate Lab Portugal, Fac Engn Univ Port, Dept Engn Elect & Comp, Fdn Ciencia & Tecnol, IEEE Power & Energy Soc ID DISTRIBUTION-SYSTEMS; ALGORITHM; GENERATION AB This paper presents a harmony search based parallel optimization algorithm to minimize voltage deviations in three phase unbalanced electrical distribution systems and to maximize active power outputs of distributed energy resources (DR). The main contribution is to reduce the adverse impacts on voltage profile during a day as photovoltaics (PVs) output or electrical vehicles (EVs) charging changes throughout a day. The IEEE 123-bus distribution test system is modified by adding DRs and EVs under different load profiles. The simulation results show that by using parallel computing techniques, heuristic methods may be used as an alternative optimization tool in electrical power distribution systems operation. C1 [Ceylan, Oguzhan; Tomsovic, Kevin] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. [Liu, Guodong] Oak Ridge Natl Lab, Power & Energy Syst Grp, Oak Ridge, TN 37381 USA. RP Ceylan, O (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. EM oceylan@utk.edu; liug@ornl.gov; tomsovic@utk.edu NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0191-0 PY 2015 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BF1GQ UT WOS:000380395400044 ER PT J AU You, ST Zhu, L Liu, Y Robertson, R Liu, YL Shankar, M King, T AF You, Shutang Zhu, Lin Liu, Yong Robertson, Russell Liu, Yilu Shankar, Mallikarjun King, Tom BE Li, SZ Dai, Y Cheng, Y TI Data Architecture for the Next-Generation Power Grid: Concept, Framework, and Use Case SO 2015 2ND INTERNATIONAL CONFERENCE ON INFORMATION SCIENCE AND CONTROL ENGINEERING ICISCE 2015 LA English DT Proceedings Paper CT 2nd International Conference on Information Science and Control Engineering CY APR 24-26, 2015 CL Shanghai, PEOPLES R CHINA SP Tongji Univ, Univ Texas San Antonio, Univ Hull, Xiamen Univ, China Jiliang Univ, Future Univ Hakodate, Hunan Univ Humanities, Sci & Techno, Iwate Prefectural Univ DE data architecture; power grid; energy management control system (EMCS); data middleware; real-time database; data service; wide-area damping control AB To support next-generation power grid monitoring, protection, and control, we re-view and synthesize the new requirements and challenges of the enabling data architecture. We outline the necessary elements and a framework for the data architecture including the data path, synchronization and alignment layer, high-speed stream processing, databases, data service layer, and the interaction with analytics & control applications. We select and discuss wide-area damping control, a representative real-time closed-loop control application, as a use case to demonstrate the proposed data architecture. C1 [You, Shutang; Zhu, Lin; Liu, Yong; Robertson, Russell; Liu, Yilu] Univ Tennessee, Dept EECS, Knoxville, TN 37996 USA. [Shankar, Mallikarjun; King, Tom] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP You, ST (reprint author), Univ Tennessee, Dept EECS, Knoxville, TN 37996 USA. OI Shankar, Mallikarjun/0000-0001-5289-7460; Liu, Yilu/0000-0002-6707-9062 NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-6850-6 PY 2015 BP 681 EP 684 DI 10.1109/ICISCE.2015.156 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF1FT UT WOS:000380392400148 ER PT J AU DeVore, PTS Jiang, Y Lynch, M Miyatake, T Carmona, C Chan, AC Muniam, K Adam, J Jalali, B AF DeVore, P. T. S. Jiang, Y. Lynch, M. Miyatake, T. Carmona, C. Chan, A. C. Muniam, K. Adam, J. Jalali, B. BE Lakshminarayan, V Bhattacharya, I TI Silicon Photonics Cloud (SiCloud) SO 2015 2ND INTERNATIONAL CONFERENCE ON OPTO-ELECTRONICS AND APPLIED OPTICS (IEM OPTRONIX) LA English DT Proceedings Paper CT 2nd International Conference on Opto-Electronics and Applied Optics (IEM OPTRONIX 2015) CY OCT 15-17, 2015 CL University of British Columbia, Vancouver, CANADA SP ieee photonics soc, ieee vancouver sect, ieee, int year of light, optical soc of india HO University of British Columbia DE Integrated optics optical communications; guided waves; biophotonics; engineering education; simulations; data centers AB Silicon Photonics Cloud (SiCloud.org) is the first silicon photonics interactive web tool. Here we report new features of this tool including mode propagation parameters and mode distribution galleries for user specified waveguide dimensions and wavelengths. C1 [DeVore, P. T. S.; Jiang, Y.; Lynch, M.; Miyatake, T.; Carmona, C.; Chan, A. C.; Muniam, K.; Adam, J.; Jalali, B.] Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA. [DeVore, P. T. S.] Lawrence Livermore Natl Lab, Engn Directorate, Livermore, CA 94550 USA. [DeVore, P. T. S.] Univ Calif Los Angeles, Dept Phys & Astron, Los Angeles, CA 90095 USA. [Adam, J.] Univ Southern Denmark, Mads Clausen Inst, DK-6400 Sonderborg, Denmark. RP DeVore, PTS (reprint author), Univ Calif Los Angeles, Dept Elect Engn, Los Angeles, CA 90095 USA. EM pdevore@ucla.edu NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7519-1 PY 2015 PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF1FC UT WOS:000380389800013 ER PT J AU Bagdasarov, GA Sasorov, PV Olkhovskaya, OG Boldarev, AS Gasilov, VA Bulanov, SS Geddes, CGR Mao, HS Schroeder, CB Esarey, E Leemans, WP AF Bagdasarov, G. A. Sasorov, P. V. Olkhovskaya, O. G. Boldarev, A. S. Gasilov, V. A. Bulanov, S. S. Geddes, C. G. R. Mao, H. S. Schroeder, C. B. Esarey, E. Leemans, W. P. GP IEEE TI 3D MHD SIMULATION OF CAPILLARY DISCHARGE FOR THE BELLA PROJECT SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Bagdasarov, G. A.; Sasorov, P. V.; Olkhovskaya, O. G.; Boldarev, A. S.; Gasilov, V. A.] Keldysh Inst Appl Math, Moscow 125047, Russia. [Bulanov, S. S.] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Geddes, C. G. R.; Mao, H. S.; Schroeder, C. B.; Esarey, E.; Leemans, W. P.] Lawrence Berkeley Natl Lab Berkeley, Berkeley, CA 94720 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200522 ER PT J AU Bettencourt, MT AF Bettencourt, M. T. GP IEEE TI MINI-PIC - A PARTICLE-IN-CELL (PIC) CODE ON UNSTRUCTURED GRIDS FOR NEXT GENERATION PLATFORMS SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Bettencourt, M. T.] Sandia Natl Labs, Albuquerque, NM USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200427 ER PT J AU Carlsson, JA Kaganovich, ID Khrabrov, AV Smolyakov, A Sydorenko, D Raitses, Y AF Carlsson, Johan A. Kaganovich, Igor D. Khrabrov, Alexander V. Smolyakov, Andrei Sydorenko, Dmytro Raitses, Yevgeny GP IEEE TI MULTI-DIMENSIONAL KINETIC SIMULATIONS OF INSTABILITIES AND TRANSPORT IN EXB DEVICES SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Carlsson, Johan A.; Kaganovich, Igor D.; Khrabrov, Alexander V.; Raitses, Yevgeny] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Smolyakov, Andrei] Univ Saskatchewan, Saskatoon, SK, Canada. [Sydorenko, Dmytro] Univ Alberta, Edmonton, AB, Canada. NR 5 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200061 ER PT J AU Fubiani, G Garrigues, L Boeuf, JP Qiang, J AF Fubiani, G. Garrigues, L. Boeuf, J. P. Qiang, J. GP IEEE TI DEVELOPPMENT OF A HYBRID MPI/OPENMP MASSIVELLY PARALLEL 3D PARTICLE-IN-CELL MODEL OF A MAGNETIZED PLASMA SOURCE SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Fubiani, G.; Garrigues, L.; Boeuf, J. P.] Univ Toulouse, UPS, LAPLACE, CNRS, F-31062 Toulouse, France. [Qiang, J.] Univ Calif Berkeley, Ernest Orlando Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 2 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200111 ER PT J AU Garanin, SF Kuznetsov, SD Reinovsky, RE AF Garanin, Sergey F. Kuznetsov, Sergey D. Reinovsky, Robert E. GP IEEE TI STUDY OF THE FEASIBILITY OF WARM DENSE MATTER GENERATION USING METAL FOIL ELECTRIC EXPLOSION UNDER MEGAAMPERE CURRENT DRIVE SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Garanin, Sergey F.; Kuznetsov, Sergey D.] All Russian Sci Res Inst Expt Phys, Russian Fed Nucl Ctr, Sarov, Nizhny Novgorod, Russia. [Reinovsky, Robert E.] Los Alamos Natl Lab, Los Alamos, NM USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200481 ER PT J AU Golovkin, IE MacFarlane, JJ Golovkina, VN Nagayama, T Bailey, JE Rochau, GA AF Golovkin, I. E. MacFarlane, J. J. Golovkina, V. N. Nagayama, T. Bailey, J. E. Rochau, G. A. GP IEEE TI MODELING OF PLASMA CONDITIONS AND SPECTRAL PROPERTIES OF RADIATION-HEATED MATTER SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Golovkin, I. E.; MacFarlane, J. J.; Golovkina, V. N.] Prism Computat Sci, Madison, WI 53711 USA. [Nagayama, T.; Bailey, J. E.; Rochau, G. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200087 ER PT J AU Gomez, MR Slutz, SA Sefkow, AB Geissel, M Harvey-Thompson, AJ Peterson, KJ Hansen, SB Hahn, KD Knapp, PF Schmit, PF Ruiz, CL Sinars, DB Awe, TJ Harding, EC Jennings, CA Smith, IC Rovang, DC Chandler, GA Cuneo, ME Lamppa, DC Martin, MR McBride, RD Porter, JL Rochau, GA AF Gomez, M. R. Slutz, S. A. Sefkow, A. B. Geissel, M. Harvey-Thompson, A. J. Peterson, K. J. Hansen, S. B. Hahn, K. D. Knapp, P. F. Schmit, P. F. Ruiz, C. L. Sinars, D. B. Awe, T. J. Harding, E. C. Jennings, C. A. Smith, I. C. Rovang, D. C. Chandler, G. A. Cuneo, M. E. Lamppa, D. C. Martin, M. R. McBride, R. D. Porter, J. L. Rochau, G. A. GP IEEE TI EXPERIMENTAL PROGRESS IN MAGNETIZED LINER INERTIAL FUSION (MAGLIF) SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Gomez, M. R.; Slutz, S. A.; Sefkow, A. B.; Geissel, M.; Harvey-Thompson, A. J.; Peterson, K. J.; Hansen, S. B.; Hahn, K. D.; Knapp, P. F.; Schmit, P. F.; Ruiz, C. L.; Sinars, D. B.; Awe, T. J.; Harding, E. C.; Jennings, C. A.; Smith, I. C.; Rovang, D. C.; Chandler, G. A.; Cuneo, M. E.; Lamppa, D. C.; Martin, M. R.; McBride, R. D.; Porter, J. L.; Rochau, G. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 3 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200007 ER PT J AU Grabowski, C Degnan, JH Domonkos, M Ruden, EL Wurden, GA AF Grabowski, C. Degnan, J. H. Domonkos, M. Ruden, E. L. Wurden, G. A. GP IEEE TI INCREASING PERFORMANCE OF THE FRCHX PLASMA INJECTOR SYSTEM SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Grabowski, C.; Degnan, J. H.; Domonkos, M.; Ruden, E. L.] Air Force Res Lab, Directed Energy Directorate, Kirtland AFB, NM 87117 USA. [Wurden, G. A.] Los Alamos Natl Lab, Los Alamos, NM USA. RI Wurden, Glen/A-1921-2017 OI Wurden, Glen/0000-0003-2991-1484 NR 1 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200366 ER PT J AU Hopkins, MM Manginell, RP Boerner, JJ Moore, CH Moorman, MW AF Hopkins, Matthew M. Manginell, Ronald P. Boerner, Jeremiah J. Moore, Christopher H. Moorman, Matthew W. GP IEEE TI FULLY KINETIC SIMULATION OF ATMOSPHERIC PRESSURE MICROCAVITY DISCHARGE DEVICE SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Hopkins, Matthew M.; Manginell, Ronald P.; Boerner, Jeremiah J.; Moore, Christopher H.; Moorman, Matthew W.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200455 ER PT J AU Johnston, MD Patel, SG Muron, DJ Kiefer, ML Maron, Y AF Johnston, M. D. Patel, S. G. Muron, D. J. Kiefer, M. L. Maron, Yitzhak GP IEEE TI SPECTROSCOPIC DETERMINATION OF MAGNETIC FIELDS IN HIGH ENERGY ELECTRON BEAM DIODES SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Johnston, M. D.; Patel, S. G.; Muron, D. J.; Kiefer, M. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Maron, Yitzhak] Weizmann Inst Sci, IL-76100 Rehovot, Israel. NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200376 ER PT J AU Koepke, ME Rochau, GA Loisel, GP Bailey, JE Liedahl, D Nagayama, T Mancini, R Lane, TS Flaugh, MK AF Koepke, M. E. Rochau, G. A. Loisel, G. P. Bailey, J. E. Liedahl, D. Nagayama, T. Mancini, R. Lane, T. S. Flaugh, M. K. GP IEEE TI ABSORPTION AND EMISSION SPECTROSCOPY REVEALING ASTROPHYSICAL PLASMA PROPERTIES IN AT-PARAMETER LABORATORY EXPERIMENTAL SIMULATIONS SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Koepke, M. E.; Flaugh, M. K.] West Virginia Univ, Morgantown, WV 26506 USA. [Rochau, G. A.; Loisel, G. P.; Bailey, J. E.; Nagayama, T.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Liedahl, D.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Mancini, R.] Univ Nevada, Reno, NV 89557 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200002 ER PT J AU Kolemen, E Gates, DA Humphreys, DA Walker, ML AF Kolemen, Egemen Gates, David A. Humphreys, David A. Walker, Michael L. GP IEEE TI PLASMA CONTROL FOR ITER AND FUTURE FUSION POWER PLANTS SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Kolemen, Egemen] Princeton Univ, Princeton, NJ 08544 USA. [Gates, David A.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. [Humphreys, David A.; Walker, Michael L.] Gen Atom Co, San Diego, CA 92186 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200403 ER PT J AU Mazarakis, MG Cordova, SR Johnston, MD Kiefer, ML Leckbee, JJ Nielsen, DS Oliver, BV Renk, TJ Webb, TJ Ziska, D Bennett, N Droemer, DW Cignac, RE Obregon, RJ Smith, CC Wilkins, FL Welch, DR Romero, TM AF Mazarakis, Michael G. Cordova, Steven R. Johnston, Mark D. Kiefer, Mark L. Leckbee, Joshua J. Nielsen, Dan S. Oliver, Bryan V. Renk, Timothy J. Webb, Timothy J. Ziska, Derek Bennett, Nichelle Droemer, Darryl W. Cignac, Raymond E. Obregon, Robert J. Smith, Chase C. Wilkins, Frank L. Welch, Dale R. Romero, Tobias M. GP IEEE TI BACK-STREAMING ION BEAM MEASUREMENTS IN A SELF MAGNETIC PINCH (SMP) ELECTRON DIODE SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Mazarakis, Michael G.; Cordova, Steven R.; Johnston, Mark D.; Kiefer, Mark L.; Leckbee, Joshua J.; Nielsen, Dan S.; Oliver, Bryan V.; Renk, Timothy J.; Webb, Timothy J.; Ziska, Derek] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Bennett, Nichelle; Droemer, Darryl W.; Cignac, Raymond E.; Obregon, Robert J.; Smith, Chase C.; Wilkins, Frank L.] Natl Secur Technol LLC, Las Vegas, NV 89193 USA. [Welch, Dale R.] Voss Sci LLC, Albuquerque, NM 87108 USA. [Romero, Tobias M.] Leidos Inc, Albuquerque, NM 87106 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200131 ER PT J AU Nichols, KE Carlsten, BC Malyzhenkov, A AF Nichols, Kimberley E. Carlsten, Bruce C. Malyzhenkov, Alexander GP IEEE TI DESIGN AND SIMULATION OF A NOVEL KLYNAC DEVICE FOR GENERATION OF BREMSSTRAHLUNG RADIATION SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Nichols, Kimberley E.; Carlsten, Bruce C.; Malyzhenkov, Alexander] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200509 ER PT J AU Nichols, KE Carlsten, BC AF Nichols, Kimberley E. Carlsten, Bruce C. GP IEEE TI EMITTANCE GROWTH ANALYSIS OF ELECTON BEAMS DUE TO NONLINEAR FOCUSING FIELDS OF PPM MAGNETS SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Nichols, Kimberley E.; Carlsten, Bruce C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200330 ER PT J AU Patel, SG Johnston, MD Muron, DJ Webb, TJ Kiefer, ML Gilgenbach, RM AF Patel, S. G. Johnston, M. D. Muron, D. J. Webb, T. J. Kiefer, M. L. Gilgenbach, R. M. GP IEEE TI MAGNETIC FIELD MEASUREMENTS ON THE SELF MAGNETIC PINCH DIODE AT SNL USING ZEEMAN SPLITTING SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Patel, S. G.; Johnston, M. D.; Muron, D. J.; Webb, T. J.; Kiefer, M. L.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Gilgenbach, R. M.] Univ Michigan, Plasma Pulsed Power & Microwave Lab, Nucl Engn & Radiol Sci Dept, Ann Arbor, MI 48105 USA. NR 1 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200377 ER PT J AU Pereira, NR Macrander, AT Stoupin, S Baronova, EO AF Pereira, N. R. Macrander, A. T. Stoupin, S. Baronova, E. O. GP IEEE TI DIAGNOSTICS OF BENT X-RAY DIAGNOSTIC CRYSTALS SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Pereira, N. R.] Ecopulse Inc, Springfield, VA USA. [Macrander, A. T.; Stoupin, S.] XSD, Adv Photon Source, Argonne, IL USA. [Baronova, E. O.] Kurchatov Inst, Moscow, Russia. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200282 ER PT J AU Peterson, KJ Awe, TJ Rosenthal, SE McBride, RD Sinars, DB Yu, EP Robertson, GK Cuneo, ME Savage, ME Knapp, PF Schmit, PF Slutz, SA Blue, BE Schroen, D Tomlinson, K AF Peterson, K. J. Awe, T. J. Rosenthal, S. E. McBride, R. D. Sinars, D. B. Yu, E. P. Robertson, G. K. Cuneo, M. E. Savage, M. E. Knapp, P. F. Schmit, P. F. Slutz, S. A. Blue, B. E. Schroen, D. Tomlinson, K. GP IEEE TI Dramatic Reduction of Magneto-Rayleigh Taylor Instability Growth in Magnetically Driven Z-Pinch Liners SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Peterson, K. J.; Awe, T. J.; Rosenthal, S. E.; McBride, R. D.; Sinars, D. B.; Yu, E. P.; Robertson, G. K.; Cuneo, M. E.; Savage, M. E.; Knapp, P. F.; Schmit, P. F.; Slutz, S. A.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Blue, B. E.; Schroen, D.; Tomlinson, K.] Gen Atom, San Diego, CA USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200006 ER PT J AU Rousculp, CL Reass, WA Oro, DM Griego, JR Turchi, PJ Reinovsky, RE Saunders, A Mariam, FG Morris, C AF Rousculp, C. L. Reass, W. A. Oro, D. M. Griego, J. R. Turchi, P. J. Reinovsky, R. E. Saunders, A. Mariam, F. G. Morris, C. GP IEEE TI SMALL PARTICLE TRANSPORT EXPERIMENTS IN VACUUM AND GAS USING PULSED-POWER Z-PINCH LINER-ON-TARGET DRIVE AND DIAGNOSED WITH PROTON RADIOGRAPHIC IMAGING SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Rousculp, C. L.; Reass, W. A.; Oro, D. M.; Griego, J. R.; Turchi, P. J.; Reinovsky, R. E.; Saunders, A.; Mariam, F. G.; Morris, C.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200475 ER PT J AU Safronova, AS Kantsyrev, VL Weller, ME Shlyaptseva, VV Shrestha, I Stafford, A Lorance, M Cooper, M Patel, SG Steiner, AM Yager-Elorriaga, DA Jordan, NM Gilgenbach, RM Coverdale, CA Jones, B Williamson, KM Chuvatin, AS AF Safronova, A. S. Kantsyrev, V. L. Weller, M. E. Shlyaptseva, V. V. Shrestha, I. Stafford, A. Lorance, M. Cooper, M. Patel, S. G. Steiner, A. M. Yager-Elorriaga, D. A. Jordan, N. M. Gilgenbach, R. M. Coverdale, C. A. Jones, B. Williamson, K. M. Chuvatin, A. S. GP IEEE TI DOUBLE AND SINGLE PLANAR WIRE ARRAYS AT HIGH AND LOW IMPEDANCE UNIVERSITY-SCALE GENERATORS SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Safronova, A. S.; Kantsyrev, V. L.; Weller, M. E.; Shlyaptseva, V. V.; Shrestha, I.; Stafford, A.; Lorance, M.; Cooper, M.] Univ Nevada, Reno, NV 89557 USA. [Patel, S. G.; Steiner, A. M.; Yager-Elorriaga, D. A.; Jordan, N. M.; Gilgenbach, R. M.] Univ Michigan, Ann Arbor, MI 48109 USA. [Coverdale, C. A.; Jones, B.; Williamson, K. M.] Sandia Natl Labs, Albuquerque, NM 87185 USA. [Chuvatin, A. S.] Ecole Polytech, CNRS, LPP, F-91128 Palaiseau, France. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200277 ER PT J AU Sinars, DB AF Sinars, Daniel B. GP IEEE TI MAGNETO-INERTIAL FUSION RESEARCH IN THE UNITED STATES: A PROMISING PROSPECT SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Sinars, Daniel B.] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200534 ER PT J AU Smolyakov, A Romadanov, I Frias, W Koshkarov, A Raitses, AY Kaganovich, I AF Smolyakov, A. Romadanov, I. Frias, W. Koshkarov, A. Raitses, A. Y. Kaganovich, I. GP IEEE TI INSTABILITIES AND TRANSPORT IN PLASMAS WITH EXB DRIFT SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Smolyakov, A.; Romadanov, I.; Frias, W.; Koshkarov, A.] Univ Saskatchewan, Saskatoon, SK S7N 5E2, Canada. [Raitses, A. Y.; Kaganovich, I.] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RI Romadanov, Ivan/A-4541-2014 OI Romadanov, Ivan/0000-0003-3291-3341 NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200491 ER PT J AU Struve, KW Joseph, NR Thomas, RD Harper-Slaboszewicz, V AF Struve, Kenneth W. Joseph, Nathan R. Thomas, Raymond D. Harper-Slaboszewicz, Victor GP IEEE TI REFURBISHMENT AND ENHANCEMENT OF THE SATURN ACCELERATOR SO 2015 42ND IEEE INTERNATIONAL CONFERENCE ON PLASMA SCIENCES (ICOPS) LA English DT Meeting Abstract CT IEEE International Conference on Plasma Sciences (ICOPS) CY MAY 24-28, 2015 CL Belek, TURKEY SP IEEE NPSS, IEEE, PLAZAMATEK C1 [Struve, Kenneth W.; Joseph, Nathan R.; Thomas, Raymond D.; Harper-Slaboszewicz, Victor] Sandia Natl Labs, Albuquerque, NM 87185 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6974-6 PY 2015 PG 1 WC Physics, Fluids & Plasmas SC Physics GA BF2ND UT WOS:000380482200019 ER PT J AU Gupta, S Tiwari, D Jantzi, C Rogers, J Maxwell, D AF Gupta, Saurabh Tiwari, Devesh Jantzi, Christopher Rogers, James Maxwell, Don GP IEEE TI Understanding and Exploiting Spatial Properties of System Failures on Extreme-Scale HPC Systems SO 2015 45TH ANNUAL IEEE/IFIP INTERNATIONAL CONFERENCE ON DEPENDABLE SYSTEMS AND NETWORKS LA English DT Proceedings Paper CT 45th Annual IEEE/IFIP International Conference on Dependable Systems and Networks CY JUN 22-25, 2015 CL Univ Estadual Campinas, Rio de Janeiro, BRAZIL SP IEEE Comp Soc Int Fed Inform Proc (IFIP), Brazilian Comp Soc (SBC), Coordenacao Aperfeicoamento Pessoal Nivel Superior (CAPES), Ministerio Educacao Brazil, Conselho Nacl Desenvolvimento Cientifico Tecnologico (CNPq), Fundacao Carlos Chagas Filho Amparo Pesquisa Estado Rio de Janeiro (FAPERJ) HO Univ Estadual Campinas ID MANAGEMENT; LOGS AB As we approach exascale, the scientific simulations are expected to experience more interruptions due to increased system failures. Designing better HPC resilience techniques requires understanding the key characteristics of system failures on these systems. While temporal properties of system failures on HPC systems have been well-investigated, there is limited understanding about the spatial characteristics of system failures and its impact on the resilience mechanisms. Therefore, we examine the spatial characteristics and behavior of system failures. We investigate the interaction between spatial and temporal characteristics of failures and its implications for system operations and resilience mechanisms on large-scale HPC systems. We show that system failures have "spatial locality" at different granularity in the system; study impact of different failure-types; and investigate the correlation among different failure-types. Finally, we propose a novel scheme that exploits the spatial locality in failures to improve application and system performance. Our evaluation shows that the proposed scheme significantly improves the system performance in a dynamic and production-level HPC system. C1 [Jantzi, Christopher] Univ Washington, Seattle, WA 98195 USA. [Gupta, Saurabh; Tiwari, Devesh; Rogers, James; Maxwell, Don] Oak Ridge Natl Lab, Oak Ridge Leadership Comp Facil, Oak Ridge, TN 37831 USA. RP Gupta, S (reprint author), Oak Ridge Natl Lab, Oak Ridge Leadership Comp Facil, Oak Ridge, TN 37831 USA. NR 19 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8629-3 PY 2015 BP 37 EP 44 DI 10.1109/DSN.2015.52 PG 8 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1PN UT WOS:000380425700004 ER PT J AU Nodari, B Caldara, M Re, V Fabris, L AF Nodari, Benedetta Caldara, Michele Re, Valerio Fabris, Lorenzo GP IEEE TI Radon fast detection and environmental monitoring with a portable wireless system SO 2015 6TH IEEE INTERNATIONAL WORKSHOP ON ADVANCES IN SENSORS AND INTERFACES (IWASI) LA English DT Proceedings Paper CT 2015 6th IEEE International Workshop on Advances in Sensors and Interfaces (IWASI) CY JUN 18-19, 2015 CL Gallipoli, ITALY SP Inst Elect Elect Engn, Components Packaging Mfg Technol Soc, Politecnico Bari, Ist Nazl Fis Nucl DE Radon; SiPM; alpha-ray detector; portable; wireless AB The World Health Organization (WHO) and the International Agency for Research on Cancer (IARC) have already classified radon as a human carcinogen and have demonstrated a correlation between environmental radon concentration and lung cancer risk. Radon dosimetry supplies valuable information about radioactive health risks in indoor environments. Dose measurements are traditionally based on laboratory analysis of alpha-ray traces in ionization chambers exposed to environmental air or passive detectors based on polycarbonate material. The main goal of this work is to develop a portable and small system with real-time indoor Radon detection capabilities. The developed system, with embedded processing and wireless communication capabilities, is based on a Zinc-Sulfat screen coupled to a Silicon Photomultiplier (SiPM) transducer, low cost read-out electronics and system ventilation. The device is able to monitor environmental data, so it could have multiple uses in research and industrial applications. C1 [Nodari, Benedetta; Caldara, Michele; Re, Valerio; Fabris, Lorenzo] Univ Bergamo, Dept Engn & Appl Sci, Dalmine, BG, Italy. [Fabris, Lorenzo] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Nodari, B (reprint author), Univ Bergamo, Dept Engn & Appl Sci, Dalmine, BG, Italy. EM benedetta.nodari@unibg.it; lorenzo.fabris@unibg.it OI Re, Valerio/0000-0003-0697-3420 NR 10 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8981-2 PY 2015 BP 254 EP 259 PG 6 WC Engineering, Electrical & Electronic; Instruments & Instrumentation; Physics, Applied SC Engineering; Instruments & Instrumentation; Physics GA BF2FM UT WOS:000380463100050 ER PT J AU Shan, HZ Williams, S Zheng, YL Kamil, A Yelick, K AF Shan, Hongzhang Williams, Samuel Zheng, Yili Kamil, Amir Yelick, Katherine BE Panda, DK TI Implementing High-Performance Geometric Multigrid Solver With Naturally Grained Messages SO 2015 9TH INTERNATIONAL CONFERENCE ON PARTITIONED GLOBAL ADDRESS SPACE PROGRAMMING MODELS (PGAS) LA English DT Proceedings Paper CT 2015 9th International Conference on Partitioned Global Address Space Programming Models (PGAS) CY SEP 16-18, 2015 CL George Washington Univ,Sci & Engn Hall, Washington, DC SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp HO George Washington Univ,Sci & Engn Hall DE HPGMG; Naturally-Grained Messages; VIS functions; Group Synchronization; PGAS; UPC plus AB Structured grid linear solvers often require manually packing and unpacking of communication data to achieve high performance. Orchestrating this process efficiently is challenging, labor-intensive, and potentially error-prone. In this paper, we explore an alternative approach that communicates the data with naturally grained message sizes without manual packing and unpacking. This approach is the distributed analogue of shared-memory programming, taking advantage of the global address space in PGAS languages to provide substantial programming ease. However, its performance may suffer from the large number of small messages. We investigate the runtime support required in the UPC++ library for this naturally grained version to close the performance gap between the two approaches and attain comparable performance at scale using the High-Performance Geometric Multgrid (HPGMG-FV) benchmark as a driver. C1 [Shan, Hongzhang; Williams, Samuel; Zheng, Yili; Kamil, Amir; Yelick, Katherine] Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. RP Shan, HZ (reprint author), Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. EM hshan@lbl.gov; swwilliams@lbl.gov; yzheng@lbl.gov; akamil@lbl.gov; kayelick@lbl.gov NR 14 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0185-9 PY 2015 BP 38 EP 46 DI 10.1109/PGAS.2015.12 PG 9 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BF1MI UT WOS:000380409700004 ER PT J AU Choi, SE Pritchard, H Shimek, J Swaro, J Tiffany, Z Turrubiates, B AF Choi, Sung-Eun Pritchard, Howard Shimek, James Swaro, James Tiffany, Zachary Turrubiates, Benjamin BE Panda, DK TI An Implementation of OFI libfabric in Support of Multithreaded PGAS Solutions SO 2015 9TH INTERNATIONAL CONFERENCE ON PARTITIONED GLOBAL ADDRESS SPACE PROGRAMMING MODELS (PGAS) LA English DT Proceedings Paper CT 2015 9th International Conference on Partitioned Global Address Space Programming Models (PGAS) CY SEP 16-18, 2015 CL George Washington Univ,Sci & Engn Hall, Washington, DC SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp HO George Washington Univ,Sci & Engn Hall DE PGAS; libfabric; networking; communication libraries; interconnects AB In this paper, we present an implementation of the OpenFabrics Interfaces (OFI) libfabric API in support of multithreaded PGAS programming models. Specifically, we describe a libfabric provider implementation for the Cray XC (TM) system using the Generic Network Interface (GNI) library. OFI libfabric is a new portable network API designed to address the needs of high performance networking software. In fact, the PGAS community was specifically targeted to provide input during the design phase, and the requirements of the community were directly addressed. The Cray XC is a system designed to meet the needs of multithreaded PGAS applications, and thus the implementation of libfabric for the GNI library provides a unique opportunity to evaluate a provider. We present initial results from our GNI provider that show good multithreaded performance and scaling for one-sided libfabric operations, which represent the bulk of data transfer operations in PGAS applications. We also show initial results for two-sided operations that are often needed for bootstrapping and barrier-style operations. C1 [Choi, Sung-Eun; Shimek, James; Swaro, James; Tiffany, Zachary] Cray Inc, St Paul, MN 55101 USA. [Pritchard, Howard; Turrubiates, Benjamin] Los Alamos Natl Lab, Los Alamos, NM USA. RP Choi, SE (reprint author), Cray Inc, St Paul, MN 55101 USA. EM sungeun@cray.com; howardp@lanl.gov; jshimek@cray.com; jswaro@cray.com; ztiffany@cray.com; ben@turrubiat.es NR 19 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0185-9 PY 2015 BP 59 EP 69 DI 10.1109/PGAS.2015.14 PG 11 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BF1MI UT WOS:000380409700006 ER PT J AU Kumar, V Grossman, M Shan, HZ Sarkar, V AF Kumar, Vivek Grossman, Max Shan, Hongzhang Sarkar, Vivek BE Panda, DK TI Scaling HabaneroUPC plus plus on Heterogeneous Supercomputers SO 2015 9TH INTERNATIONAL CONFERENCE ON PARTITIONED GLOBAL ADDRESS SPACE PROGRAMMING MODELS (PGAS) LA English DT Proceedings Paper CT 2015 9th International Conference on Partitioned Global Address Space Programming Models (PGAS) CY SEP 16-18, 2015 CL George Washington Univ,Sci & Engn Hall, Washington, DC SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp HO George Washington Univ,Sci & Engn Hall DE Habanero; UPC plus; PGAS; Heterogeneous computing; CUDA AB Accelerators/co-processors have made their way into supercomputing systems. These modern heterogeneous systems feature multiple layers of memory hierarchies, and produce a high degree of thread-level parallelism. To ensure that current and future applications perform well on these systems, it is important that users be able to cleanly express the various types of parallelism found in their applications while trusting that expertly-implemented runtime libraries will schedule this parallelism in a way that efficiently utilizes the memory hierarchies and computational resources of their system. In this poster we present our work-in-progress, a distributed, heterogeneous programming model in HabaneroUPC++, which aims to target distributed, heterogeneous systems with multi-layered memory hierarchies through a distributed data-driven programming model that integrates all memory layers together through data-flow programming. C1 [Kumar, Vivek; Grossman, Max; Sarkar, Vivek] Rice Univ, Houston, TX 77251 USA. [Shan, Hongzhang] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Kumar, V (reprint author), Rice Univ, Houston, TX 77251 USA. NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0185-9 PY 2015 BP 96 EP 98 DI 10.1109/PGAS.2015.19 PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BF1MI UT WOS:000380409700012 ER PT J AU Welch, A Shamis, P Hao, PF Chapman, B AF Welch, Aaron Shamis, Pavel Hao, Pengfei Chapman, Barbara BE Panda, DK TI PySHMEM: A High Productivity OpenSHMEM Interface for Python SO 2015 9TH INTERNATIONAL CONFERENCE ON PARTITIONED GLOBAL ADDRESS SPACE PROGRAMMING MODELS (PGAS) LA English DT Proceedings Paper CT 2015 9th International Conference on Partitioned Global Address Space Programming Models (PGAS) CY SEP 16-18, 2015 CL George Washington Univ,Sci & Engn Hall, Washington, DC SP IEEE, IEEE Comp Soc, IEEE Tech Comm Scalable Comp HO George Washington Univ,Sci & Engn Hall AB OpenSHMEM is a well known high performance communication library implementing the Partitioned Global Address Space (PGAS) programming model. It exposes a broad range of one-sided communication semantics which maps well to modern network technologies and can achieve a level of performance that is close to that of network hardware. In this paper we explore how OpenSHMEM semantics can be integrated within the context of Python, a high level programming language that is widely used by the scientific community. In this work we introduce the PySHMEM library that provides simple and convenient interfaces for accessing OpenSHMEM functionality. The goal of this paper is twofold: (1) investigate how high-level programming semantics can be used to expose a high productivity interface for accessing low-level communication semantics, and (2) evaluate performance overheads imposed by Python with respect to native (C) OpenSHMEM performance. C1 [Welch, Aaron; Hao, Pengfei; Chapman, Barbara] Univ Houston, Dept Comp Sci, Houston, TX 77204 USA. [Welch, Aaron] Oak Ridge Natl Lab, High Performance Comp Res Program, Oak Ridge, TN USA. [Shamis, Pavel] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN USA. RP Welch, A (reprint author), Univ Houston, Dept Comp Sci, Houston, TX 77204 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0185-9 PY 2015 BP 99 EP 101 DI 10.1109/PGAS.2015.20 PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA BF1MI UT WOS:000380409700013 ER PT J AU Solano-Quinde, LD Bode, BM Somani, AK AF Solano-Quinde, Lizandro D. Bode, Brett M. Somani, Arun K. BE Monsalve, C Sanchez, A Chaczko, Z TI Automatic Parallelization of GPU Applications using OpenCL SO 2015 ASIA-PACIFIC CONFERENCE ON COMPUTER-AIDED SYSTEM ENGINEERING - APCASE 2015 LA English DT Proceedings Paper CT 2015 Asia-Pacific Conference on Computer Aided System Engineering CY JUL 14-16, 2015 CL Quito, ECUADOR SP Univ San Francisco, IEEE, IEEE Comp Soc, Escuela Super Politecn Litoral, Univ Politecn SALESIANA Ecuador, UTS Engn & Informat Technol, Univ Technol Sydney, Oberosterreich, BINUS Univ People Innovat Excellence, ULPGC, Wroclaw Univ Technol, BCDS Solutions AB Graphics Processing Units (GPUs) have been successfully used to accelerate scientific applications due to their computation power and the availability of programming languages that make more approachable writing scientific applications for GPUs. However, since the programming model of GPUs requires offloading all the data to the GPU memory, the memory footprint of the application is limited to the size of the GPU memory. Multi-GPU systems can make memory limited problems tractable by parallelizing the computation and data among the available GPUs. Parallelizing applications written for running on single-GPU systems can be done (i) at runtime through an environment that captures the memory operations and kernel calls and distributes among the available GPUs, and (ii) at compile time through a pre-compiler that transforms the application for decomposing the data and computation among the available GPUs. In this paper we propose a framework and implement a tool that transforms an OpenCL application written to run on single-GPU systems into one that runs on multi-GPU systems. Based on data dependencies and data usage analysis, the application is transformed to decompose data and computation among the available GPUs. To reduce the data transfer overhead, computation-communication overlapping techniques are utilized. We tested our tool using two applications with different data transfer requirements, for the application with no data transfer requirements, a linear speedup is achieved, while for the application with data transfers, the computation-communication overlapping reduces the communication overhead by 40%. C1 [Solano-Quinde, Lizandro D.] Univ Cuenca, Dept Elect Elect & Telecommun Engn, Cuenca, Ecuador. [Solano-Quinde, Lizandro D.] US DOE, Ames Lab, Washington, DC 20585 USA. [Bode, Brett M.] Univ Illinois, Natl Ctr Supercomp Applicat, Champaign, IL USA. [Somani, Arun K.] Iowa State Univ, Dept Elect & Comp Engn, Ames, IA USA. RP Solano-Quinde, LD (reprint author), Univ Cuenca, Dept Elect Elect & Telecommun Engn, Cuenca, Ecuador. EM lizandro.solano@ucuenca.edu.ec; brett@illinois.edu; arun@iastate.edu RI Somani, Arun /C-5961-2017; OI Somani, Arun /0000-0002-6248-4376; Bode, Brett/0000-0002-4202-1024 NR 10 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-7588-4 PY 2015 BP 276 EP 283 DI 10.1109/APCASE.2015.56 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BF1JY UT WOS:000380403600043 ER PT S AU Gurev, V Korte, J Hafez, O Fattebert, JL Richards, DF Rice, JJ AF Gurev, Viatcheslav Korte, James Hafez, Omar Fattebert, Jean-Luc Richards, David F. Rice, John J. BE Murray, A TI Papillary muscles contraction does not change ventricular wall mechanics SO 2015 COMPUTING IN CARDIOLOGY CONFERENCE (CINC) SE Computing in Cardiology Conference LA English DT Proceedings Paper CT 2015 Comp in Cardiol Conference (CinC) CY SEP 06-09, 2015 CL Comp in Cardiol 2015, nice, FRANCE HO Comp in Cardiol 2015 ID REGIONAL DEFORMATION; INSERTION SITE; HUMAN HEART AB Papillary muscles play a crucial role to support valves in the ventricles. However, much less is known about the role in ventricular wall mechanics. Evidence in the literature is inconclusive, showing both of changes in wall strain and indications of no changes in strain after detachment of papillary muscles. We designed a high-resolution 3D model of canine ventricles to investigate the effects of papillary muscles on strain in the regions overlying papillary muscles. An anatomical model was obtained from in-vitro MRI and a realistic fiber geometry assuming transmural rotation in the ventricular wall. Boundary conditions were either: 1) the attached state in which movements of the papillary muscle tips were restricted to the plane parallel to the base of the ventricles; or 2) the detached state where no constraints were placed on the muscle tips. Strains were measured at locations overlying anterior papillary muscle and compared between attached and detached papillary muscle states. In simulation of typical physiological contractions, we found essentially identical pattern in all strain components in the two cases with minor changes near the anterior papillary muscle. Further studies will be required to generalize the results to more anatomical reconstructions and a wider range of conditions. C1 [Gurev, Viatcheslav; Korte, James; Rice, John J.] IBM Res, Yorktown Hts, NY USA. [Fattebert, Jean-Luc; Richards, David F.] Lawrence Livermore Natl Lab, Livermore, CA USA. [Hafez, Omar] Univ Calif Davis, Davis, CA USA. RP Gurev, V (reprint author), IBM Res, Thomas J Watson Res Ctr, 1101 Kitchawan Rd, Yorktown Hts, NY 10598 USA. EM vgurev@us.ibm.com NR 13 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-887X BN 978-1-5090-0685-4 J9 COMPUT CARDIOL CONF PY 2015 VL 42 BP 333 EP 336 PG 4 WC Computer Science, Interdisciplinary Applications; Engineering, Multidisciplinary; Engineering, Biomedical SC Computer Science; Engineering GA BF1CZ UT WOS:000380374700085 ER PT S AU Fan, YJ Kamath, C AF Fan, Ya Ju Kamath, Chandrika BE Bilgin, A Marcellin, MW SerraSagrista, J Storer, JA TI Practical Considerations in Applying Compressed Sensing to Simulation Data SO 2015 DATA COMPRESSION CONFERENCE (DCC) SE IEEE Data Compression Conference LA English DT Meeting Abstract CT Data Compression Conference (DCC) CY APR 07-09, 2015 CL Snowbird, UT SP Univ Arizona, Brandeis Univ, Microsoft Research, IEEE Signal Processing Soc, IEEE Comp Soc C1 [Fan, Ya Ju; Kamath, Chandrika] Lawrence Livermore Natl Lab, Livermore, CA 94551 USA. EM fan4@llnl.gov; kamath2@llnl.gov NR 0 TC 0 Z9 0 U1 1 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1068-0314 BN 978-1-4799-8430-5 J9 IEEE DATA COMPR CONF PY 2015 BP 479 EP 479 DI 10.1109/DCC.2015.94 PG 1 WC Computer Science, Theory & Methods; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA BF1MJ UT WOS:000380409800086 ER PT J AU Addanki, R Maji, S Veeraraghavan, M Tracy, C AF Addanki, Ranjana Maji, Sourav Veeraraghavan, Malathi Tracy, Chris GP IEEE TI A measurement-based study of big-data movement SO 2015 EUROPEAN CONFERENCE ON NETWORKS AND COMMUNICATIONS (EUCNC) LA English DT Proceedings Paper CT European Conference On Networks And Communications (EuCNC) CY JUN 29-JUL 02, 2015 CL Paris, FRANCE DE Measurements; elephant flows; data movement AB Parallel TCP connections are used for large scientific dataset transfers to increase throughput. Therefore, to accurately characterize big-data movement, it is important to reconstruct parallel flowsets from traffic measurements. In this work, we start with NetFlow records collected in an operational research-and-education network across which large scientific datasets are moved routinely, reconstruct individual elephant flows from the NetFlow records, and assemble parallel flowsets from elephant flows. Our findings are as follows. The top 1% of flowset sizes were in the hundreds of GBs to low TBs range, 95% of flowsets had rates less than 2.5 Gbps, and 99% of flowsets had durations shorter than 4 hours. Median flowset rate increases and rate variance decreases with increasing number of per-flowset component flows. Such findings are useful for network planning, traffic engineering, and for improving user performance, since large dataset transfers are among the most demanding of network applications. C1 [Addanki, Ranjana; Maji, Sourav; Veeraraghavan, Malathi] Univ Virginia, Dept Elect & Comp Engn, Charlottesville, VA 22904 USA. [Tracy, Chris] LBNL, Energy Sci Network ESnet, Berkeley, CA USA. RP Addanki, R (reprint author), Univ Virginia, Dept Elect & Comp Engn, Charlottesville, VA 22904 USA. EM rla3aq@virginia.edu; sm8kk@virginia.edu; mvee@virginia.edu; ctracy@es.net NR 11 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7359-3 PY 2015 BP 445 EP 449 PG 5 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BF1IG UT WOS:000380399400087 ER PT J AU Kumar, U Milesi, C Ganguly, S Raja, SK Nemani, RR AF Kumar, Uttam Milesi, Cristina Ganguly, Sangram Raja, S. Kumar Nemani, Ramakrishna R. GP IEEE TI Simplex Projection for Land Cover Information Mining from Landsat-5 TM Data SO 2015 IEEE 16TH INTERNATIONAL CONFERENCE ON INFORMATION REUSE AND INTEGRATION LA English DT Proceedings Paper CT IEEE 16th International Conference on Information Reuse and Integration CY AUG 13-15, 2015 CL San Francisco, CA SP SIRI, IEEE Comp Soc, FIU Comp & Informat Sci, Nanjing Univ Posts & Telecommun, Almanden Inst IBM DE land cover; information mining; linear spectral unmixing; mixed pixels; simplex projection ID IMAGE CLASSIFICATION; MIXTURE-MODELS; ALGORITHM AB In this paper we explore the efficacy of simplex projection for land cover (LC) information mining. LC is the observed biophysical cover on the surface of the Earth and describes how much of a region is covered by forests, wetlands, impervious surfaces, etc. LC information can be extracted by processing remotely sensed data acquired through sensors mounted either on space borne satellites or aircrafts. Since these data are a mixture of more than two LC class types, unmixing algorithms based on linear mixture model such as simplex projection, aims to resolve the different components of mixed pixels in the data. This method is based on the equivalence of the fully constrained least squares problem of projecting a point onto a simplex. The algorithm does not perform optimization and is analytical, thus reducing the computational complexity. The algorithm is tested on computer-simulated data of various signal to noise ratio and Landsat-5 TM data of an agricultural landscape and an urban scenario. The results are validated using descriptive statistics, correlation coefficient, root mean square error, probability of success and bivariate distribution function. C1 [Kumar, Uttam] NASA Ames Res Ctr, Oak Ridge Associated Univ, Moffett Field, CA 94035 USA. [Milesi, Cristina; Nemani, Ramakrishna R.] NASA Ames Res Ctr, Moffett Field, CA 94035 USA. [Ganguly, Sangram] BAERI NASA Ames Res Ctr, Moffett Field, CA 94035 USA. [Raja, S. Kumar] Airbus Engn Ctr India, EADS Innovat Works, Bangalore 560048, Karnataka, India. RP Kumar, U (reprint author), NASA Ames Res Ctr, Oak Ridge Associated Univ, Moffett Field, CA 94035 USA. EM uttam.kumar@nasa.gov; cristina.milesi@nasa.gov; sangram.ganguly@nasa.gov; sk.kumar.raja@gmail.com; rama.nemani@nasa.gov NR 29 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-6656-4 PY 2015 BP 244 EP 251 DI 10.1109/IRI.2015.48 PG 8 WC Computer Science, Artificial Intelligence SC Computer Science GA BF2EB UT WOS:000380459500035 ER PT J AU Kumar, U Milesi, C Raja, SK Ganguly, S Nemani, RR AF Kumar, Uttam Milesi, Cristina Raja, S. Kumar Ganguly, Sangram Nemani, Ramakrishna R. GP IEEE TI Unconstrained Linear Spectral Mixture Models for Spatial Information Extraction: A Comparative Study SO 2015 IEEE 16TH INTERNATIONAL CONFERENCE ON INFORMATION REUSE AND INTEGRATION LA English DT Proceedings Paper CT IEEE 16th International Conference on Information Reuse and Integration CY AUG 13-15, 2015 CL San Francisco, CA SP SIRI, IEEE Comp Soc, FIU Comp & Informat Sci, Nanjing Univ Posts & Telecommun, Almanden Inst IBM DE mixed pixels; unconstrained mixture models; information extraction; linear spectral unmixing; algorithms ID ALGORITHM AB Linear spectral unmixing remains an important subject of research in image processing community. It deals with disintegrating a pixel spectrum into its constituent spectra through a mixture model assuming that observed data are linear mixtures of two or more objects, representing a mixed pixel. The linear mixture model allows a number of target materials (classes) to be present, each contributing a fraction of its unique, fixed spectrum corresponding to the area occupied by that material in a pixel. The linear model is inverted to produce estimates of those fractional abundances. The optimal solution of the mixture model can be an unconstrained solution, partially constrained solution or a fully constrained solution when the abundance non-negativity and abundance sum-to-one constraints are imposed. Although constrained algorithms are appropriate for target quantification and for estimating abundance fractions, unconstrained models are more suitable for applications seeking target detection, identification and discrimination. In this paper we perform a comparative study of five unconstrained mixture models - unconstrained least squares, orthogonal subspace projection, singular value decomposition, sparse unmixing via variable splitting and augmented Lagrangian (SUnSAL) and SUnSAL Total Variation (SUnSAL TV). The algorithms are tested on computer-simulated data of various signal to noise ratio and Landsat-5 TM data of an agricultural landscape and an urban scenario. The results were validated using descriptive statistics, correlation coefficient, RMSE, probability of success, and bivariate distribution function. C1 [Kumar, Uttam] NASA, Ames Res Ctr, Oak Ridge Associated Univ, Moffett Field, CA 94035 USA. [Milesi, Cristina; Nemani, Ramakrishna R.] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Raja, S. Kumar] Airbus Engn Ctr India, EADS Innovat Works, Bangalore 560048, Karnataka, India. [Ganguly, Sangram] NASA, Ames Res Ctr, BAERI, Moffett Field, CA 94035 USA. RP Kumar, U (reprint author), NASA, Ames Res Ctr, Oak Ridge Associated Univ, Moffett Field, CA 94035 USA. EM uttam.kumar@nasa.gov; cristina.milesi@nasa.gov; sk.kumar.raja@gmail.com; sangram.ganguly@nasa.gov; rama.nemani@nasa.gov NR 37 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-6656-4 PY 2015 BP 574 EP 581 DI 10.1109/IRI.2015.91 PG 8 WC Computer Science, Artificial Intelligence SC Computer Science GA BF2EB UT WOS:000380459500080 ER PT S AU Huang, S Fu, S DeBardeleben, N Guan, Q Xu, CZ AF Huang, Song Fu, Song DeBardeleben, Nathan Guan, Qiang Xu, Cheng-Zhong GP IEEE BE Wang, G Tsuchiya, T Xiang, D TI Differentiated Failure Remediation with Action Selection for Resilient Computing SO 2015 IEEE 21ST PACIFIC RIM INTERNATIONAL SYMPOSIUM ON DEPENDABLE COMPUTING (PRDC) SE IEEE Pacific Rim International Symposium on Dependable Computing LA English DT Proceedings Paper CT IEEE 21st Pacific Rim International Symposium on Dependable Computing (PRDC 2015) CY NOV 18-20, 2015 CL Zhangjiajie, PEOPLES R CHINA SP IEEE Comp Soc, Ifip, Cent S Univ, TCFT IEEE, NSFC ID SYSTEMS AB As the fault frequency is increasing with the component count in modern and future computer systems, resilience becomes increasingly critical. Existing work on anomaly detection and fault prediction enables failure avoidance techniques to circumvent fault effects proactively. In addition, traditional fault tolerance techniques can be applied to handle faults reactively. Different types of faults may affect different components of a system and have various manifestations. They need to be treated differently. However, the existing fault handling techniques uniformly treat all faults without considering their types and distinct properties. In this paper, we present a differentiated fault remediation framework with action selection (DFRAS) which integrates both preventive and reactive remediation actions differentiated for different types of faults with their urgency requirements. We investigate four major types of faults and identify candidate remediation actions. We apply the urgency requirements as constraints for action selection. We propose formal performance models to quantify the wasted time of the candidate actions, and develop a decision making method to select the best actions that minimize the overall remediation cost. We have implemented a prototype of DFRAS and evaluated its performance by simulations and experiments. Simulation and experimental results show that the integrated fault remediation strategies can significantly reduce the remediation overhead. The developed DFRAS system is lightweight, making it feasible for online fault management in large-scale systems. C1 [Huang, Song; Fu, Song] Univ North Texas, Dept Comp Sci & Engn, Denton, TX 76203 USA. [DeBardeleben, Nathan; Guan, Qiang] Los Alamos Natl Lab, Ultrascale Syst Res Ctr, High Performance Syst Integrat, Los Alamos, NM USA. [Xu, Cheng-Zhong] Wayne State Univ, Dept Elect & Comp Engn, Detroit, MI USA. RP Huang, S (reprint author), Univ North Texas, Dept Comp Sci & Engn, Denton, TX 76203 USA. EM songhuang@my.unt.edu; song.fu@unt.edu; ndebard@lanl.gov; qguan@lanl.gov; czxu@wayne.edu NR 41 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 1555-094X BN 978-1-4673-9376-8 J9 IEEE PAC RIM INT SYM PY 2015 BP 199 EP 208 DI 10.1109/PRDC.2015.42 PG 10 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1JU UT WOS:000380403300021 ER PT S AU DeBardeleben, N Blanchard, S Kaeli, D Rech, P AF DeBardeleben, Nathan Blanchard, Sean Kaeli, David Rech, Paolo GP IEEE TI Field, Experimental, and Analytical Data on Large-scale HPC Systems and Evaluation of the Implications for Exascale System Design SO 2015 IEEE 33RD VLSI TEST SYMPOSIUM (VTS) SE IEEE VLSI Test Symposium LA English DT Proceedings Paper CT 2015 IEEE 33rd VLSI TEST SYMPOSIUM (VTS) CY APR 27-29, 2015 CL Napa, CA SP IEEE Comp Soc, TTTC Test Technol Tech Council AB Reliability is an issue for today's large scale computing systems designers, producers, and users. As we approach exascale, the resilience challenge will become critical due to increase in system-scale. It is then fundamental to understand the nature of errors, evaluate their probability of occurrence, and improve the design to reduce their impact on the overall system. In the paper we will present experimental, field, and analytical data to characterize and quantify errors on accelerators, providing a thorough understanding of errors impact on today and future large-scale systems. C1 [DeBardeleben, Nathan; Blanchard, Sean] Los Alamos Natl Lab, Ultrascale Syst Res Ctr, Los Alamos, NM 87545 USA. [Kaeli, David] Northeastern Univ, Boston, MA 02115 USA. [Rech, Paolo] Univ Fed Rio Grande do Sul, Porto Alegre, RS, Brazil. RP DeBardeleben, N (reprint author), Los Alamos Natl Lab, Ultrascale Syst Res Ctr, Los Alamos, NM 87545 USA. EM ndebard@lanl.gov; seanb@lanl.gov; kaeli@ece.neu.edu; prech@inf.ufrgs.br NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1093-0167 BN 978-1-4799-7597-6 J9 IEEE VLSI TEST SYMP PY 2015 PG 2 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1UG UT WOS:000380437500043 ER PT J AU Widanagamaachchi, W Klacansky, P Kolla, H Bhagatwala, A Chen, J Pascucci, V Bremer, PT AF Widanagamaachchi, Wathsala Klacansky, Pavol Kolla, Hemanth Bhagatwala, Ankit Chen, Jackie Pascucci, Valerio Bremer, Peer-Timo BE Bennett, J Childs, H Hadwiger, M TI Tracking Features in Embedded Surfaces: Understanding Extinction in Turbulent Combustion SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab ID DIMENSIONS AB Understanding the temporal evolution of features of interest requires the ability to: (i) extract features from each snapshot; (ii) correlate them over time; and (iii) understand the resulting tracking graph. This paper provides new solutions for the last two challenges in the context of large-scale turbulent combustion simulations. In particular, we present a simple and general algorithm to correlate hierarchical features, embedded in time-dependent surfaces. This, for the first time, provides a parameter independent approach to track embedded features. Furthermore, we provide a new technique to adaptively change feature parameters over time to both: alleviate artifacts due to insufficient temporal resolution as well as to simplify the resulting tracking graphs to promote new scientific insights. Our solutions are integrated into a general and flexible analysis environment that allows users to interactively explore the spatio-temporal behavior of large-scale simulations. We demonstrate the results using the analysis of extinction holes in turbulent combustion as primary case study and a number of other applications to illustrate the generality of the approach. C1 [Widanagamaachchi, Wathsala; Klacansky, Pavol; Pascucci, Valerio; Bremer, Peer-Timo] Univ Utah, SCI Inst, Salt Lake City, UT 84112 USA. [Kolla, Hemanth; Bhagatwala, Ankit; Chen, Jackie] Sandia Natl Labs, Albuquerque, NM USA. [Bremer, Peer-Timo] Lawrence Livermore Natl Lab, Livermore, CA USA. RP Widanagamaachchi, W (reprint author), Univ Utah, SCI Inst, Salt Lake City, UT 84112 USA. EM wathsy@sci.utah.edu; klacansky@sci.utah.edu; hnkolla@sandia.gov; abhagat@sandia.gov; jhchen@sandia.gov; pascucci@sci.utah.edu; bremer5@llnl.gov NR 28 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 9 EP 16 PG 8 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900002 ER PT J AU Wong, PC Haglin, D Gillen, D Chavarria, D Castellana, V Joslyn, C Chappell, A Zhang, S AF Wong, Pak Chung Haglin, David Gillen, David Chavarria, Daniel Castellana, Vito Joslyn, Cliff Chappell, Alan Zhang, Song BE Bennett, J Childs, H Hadwiger, M TI A Visual Analytics Paradigm Enabling Trillion-Edge Graph Exploration SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab DE Visual analytics; graph visualization; web-scale graph; NetFlow; triple-store; RDF; SPARQL; high-performance computing; Linux cluster ID CHALLENGES AB We present a visual analytics paradigm and a system prototype for exploring web-scale graphs. A web-scale graph is described as a graph with similar to one trillion edges and similar to 50 billion vertices. While there is an aggressive R&D effort in processing and exploring web-scale graphs among internet vendors such as Facebook and Google, visualizing a graph of that scale still remains an underexplored R&D area. The paper describes a nontraditional peek-and-filter strategy that facilitates the exploration of a graph database of unprecedented size for visualization and analytics. We demonstrate that our system prototype can 1) preprocess a graph with similar to 25 billion edges in less than two hours and 2) support database query and interactive visualization on the processed graph database afterward. Based on our computational performance results, we argue that we most likely will achieve the one trillion edge mark (a computational performance improvement of 40 times) for graph visual analytics in the near future. C1 [Wong, Pak Chung; Haglin, David; Gillen, David; Chavarria, Daniel; Castellana, Vito; Joslyn, Cliff; Chappell, Alan] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Zhang, Song] Mississippi State Univ, Mississippi State, MS 39762 USA. RP Wong, PC (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM pak.wong@pnnl.gov NR 24 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 57 EP 64 PG 8 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900008 ER PT J AU Neuroth, T Sauer, F Wang, WX Ethier, S Ma, KL AF Neuroth, Tyson Sauer, Franz Wang, Weixing Ethier, Stephane Ma, Kwan-Liu BE Bennett, J Childs, H Hadwiger, M TI Scalable Visualization of Discrete Velocity Decompositions Using Spatially Organized Histograms SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab DE 2D histogram; velocity decomposition; particle data; movement data; large-scale data ID FLOW; UNCERTAINTY; GLYPHS AB Visualizing the velocity decomposition of a group of objects has applications to many studied data types, such as Lagrangian-based flow data or geospatial movement data. Traditional visualization techniques are often subject to a trade-off between visual clutter and loss of detail, especially in a large scale setting. The use of 2D velocity histograms can alleviate these issues. While they have been used throughout domain specific areas on a basic level, there has been very little work in the visualization community on leveraging them to perform more advanced visualization tasks. In this work, we develop an interactive system which utilizes velocity histograms to visualize the velocity decomposition of a group of objects. In addition, we extend our tool to utilize two schemes for histogram generation: an on-the-fly sampling scheme as well as an in situ scheme to maintain interactivity in extreme scale applications. C1 [Neuroth, Tyson; Sauer, Franz; Ma, Kwan-Liu] Univ Calif Davis, Davis, CA 95616 USA. [Wang, Weixing; Ethier, Stephane] Princeton Plasma Phys Lab, Princeton, NJ 08543 USA. RP Neuroth, T (reprint author), Univ Calif Davis, Davis, CA 95616 USA. EM taneuroth@ucdavis.edu; fasauer@ucdavis.edu; wwang@pppl.gov; ethier@pppl.gov; ma@cs.ucdavis.edu NR 18 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 65 EP 72 PG 8 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900009 ER PT J AU Labasan, S Larsen, M Childs, H AF Labasan, Stephanie Larsen, Matthew Childs, Hank BE Bennett, J Childs, H Hadwiger, M TI Exploring Tradeoffs Between Power and Performance for a Scientific Visualization Algorithm SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab AB Power is becoming a major design constraint in the world of high-performance computing (HPC). This constraint affects the hardware being considered for future architectures, the ways it will run software, and the design of the software itself. Within this context, we explore tradeoffs between power and performance. Visualization algorithms themselves merit special consideration, since they are more data-intensive in nature than traditional HPC programs like simulation codes. This data-intensive property enables different approaches for optimizing power usage. Our study focuses on the isosurfacing algorithm, and explores changes in power and performance as clock frequency changes, as power usage is highly dependent on clock frequency. We vary many of the factors seen in the HPC context-programming model (MPI vs. OpenMP), implementation (generalized vs. optimized), concurrency, architecture, and data set-and measure how these changes affect power-performance properties. The result is a study that informs the best approaches for optimizing energy usage for a representative visualization algorithm. C1 [Labasan, Stephanie; Larsen, Matthew; Childs, Hank] Univ Oregon, Eugene, OR 97403 USA. [Childs, Hank] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Labasan, S (reprint author), Univ Oregon, Eugene, OR 97403 USA. EM slabasan@cs.uoregon.edu NR 23 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 73 EP 80 PG 8 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900010 ER PT J AU Li, SM Gruchalla, K Potter, K Clyne, J Childs, H AF Li, Shaomeng Gruchalla, Kenny Potter, Kristin Clyne, John Childs, Hank BE Bennett, J Childs, H Hadwiger, M TI Evaluating the Efficacy of Wavelet Configurations on Turbulent-Flow Data SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab ID IMAGE COMPRESSION; VOLUME DATA; VISUALIZATION; JPEG-2000; CODER AB I/O is increasingly becoming a significant constraint for simulation codes and visualization tools on modern supercomputers. Data compression is an attractive workaround, and, in particular, wavelets provide a promising solution. However, wavelets can be applied in multiple configurations, and the variations in configuration impact accuracy, storage cost, and execution time. While the variation in these factors over wavelet configurations have been explored in image processing, they are not well understood for visualization and analysis of scientific data. To illuminate this issue, we evaluate multiple wavelet configurations on turbulent-flow data. Our approach is to repeat established analysis routines on uncompressed and lossy-compressed versions of a data set, and then quantitatively compare their outcomes. Our findings show that accuracy varies greatly based on wavelet configuration, while storage cost and execution time vary less. Overall, our study provides new insights for simulation analysts and visualization experts, who need to make tradeoffs between accuracy, storage cost, and execution time. C1 [Li, Shaomeng; Potter, Kristin; Childs, Hank] Univ Oregon, Eugene, OR 97403 USA. [Gruchalla, Kenny] Natl Renewable Energy Lab, Golden, CO USA. [Clyne, John] Natl Ctr Atmospher Res, Boulder, CO 80307 USA. [Childs, Hank] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Li, SM (reprint author), Univ Oregon, Eugene, OR 97403 USA. NR 33 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 81 EP 89 PG 9 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900011 ER PT J AU Sewell, C Lo, LT Heitmann, K Habib, S Ahrens, J AF Sewell, Christopher Lo, Li-ta Heitmann, Katrin Habib, Salman Ahrens, James BE Bennett, J Childs, H Hadwiger, M TI Utilizing Many-Core Accelerators for Halo and Center Finding within a Cosmology Simulation SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab AB Efficiently finding and computing statistics about "halos" (regions of high density) are essential analysis steps for N-body cosmology simulations. However, in state-of-the-art simulation codes, these analysis operators do not currently take advantage of the shared-memory data-parallelism available on multi-core and many-core architectures. The Hybrid / Hardware Accelerated Cosmology Code (HACC) is designed as an MPI+X code, but the analysis operators are parallelized only among MPI ranks, because of the difficulty in porting different X implementations (e.g., OpenMP, CUDA) across all architectures on which it is run. In this paper, we present portable data-parallel algorithms for several variations of halo finding and halo center finding algorithms. These are implemented with the PISTON component of the VTK-m framework, which uses Nvidia's Thrust library to construct data-parallel algorithms that allow a single implementation to be compiled to multiple backends to target a variety of multi-core and many-core architectures. Finally, we compare the performance of our halo and center finding algorithms against the original HACC implementations on the Moonlight, Stampede, and Titan supercomputers. The portability of Thrust allowed the same code to run efficiently on each of these architectures. On Titan, the performance improvements using our code have enabled halo analysis to be performed on a very large data set (81923 particles across 16,384 nodes of Titan) for which analysis using only the existing CPU algorithms was not feasible. C1 [Sewell, Christopher; Lo, Li-ta; Ahrens, James] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Heitmann, Katrin; Habib, Salman] Argonne Natl Lab, Argonne, IL 60439 USA. RP Sewell, C (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM csewell@lanl.gov; ollie@lanl.gov; heitmann@anl.gov; habib@anl.gov; ahrens@lanl.gov NR 26 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 91 EP 98 PG 8 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900012 ER PT J AU Kress, J Anderson, E Childs, H AF Kress, James Anderson, Erik Childs, Hank BE Bennett, J Childs, H Hadwiger, M TI A Visualization Pipeline for Large-Scale Tractography Data SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab DE Tractography; Neuroscience; Visualization; Clustering ID FIBER ORIENTATION; BRAIN; TRACTS AB We present a novel methodology for clustering and visualizing large-scale tractography data sets. Tractography data sets contain hundreds of millions of line segments, making visualizing and understanding this data very difficult. Our method reduces and simplifies this data to create coherent groupings and visualizations. Our input is a collection of tracts, from which we derive metrics and perform clustering. Using the clustered data, we create a three-dimensional histogram that contains the counts of the number of tracts that intersect each bin. With these new data sets, we can perform standard visualization techniques. Our contribution is the visualization pipeline itself, as well as a study and evaluation schema. Our study utilizes our evaluation schema to identify the best and most influential clustering metrics, and an optimal number of clusters under varying user requirements. C1 [Kress, James; Childs, Hank] Univ Oregon, Eugene, OR 97403 USA. [Anderson, Erik] Elect Geodes Inc, Eugene, OR USA. [Childs, Hank] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Kress, J (reprint author), Univ Oregon, Eugene, OR 97403 USA. EM james@jameskress.com OI Kress, James/0000-0002-9706-6182 NR 33 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 115 EP 123 PG 9 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900015 ER PT J AU Jiang, J Hereld, M Insley, J Papka, ME Rizzi, S Uram, T Vishwanath, V AF Jiang, Jie Hereld, Mark Insley, Joseph Papka, Michael E. Rizzi, Silvio Uram, Thomas Vishwanath, Venkatram BE Bennett, J Childs, H Hadwiger, M TI Streaming Ultra High Resolution Images to Large Tiled Display at Nearly Interactive Frame Rate with vl3 SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab AB Visualization of large-scale simulations running on supercomputers requires ultra-high resolution images to capture important features in the data. In this work, we present a system for streaming ultra-high resolution images from a visualization cluster to a remote tiled display at nearly interactive frame rates. vl3, a modular framework for large scale data visualization and analysis, provides the backbone of our implementation. With this system we are able to stream over the network volume renderings of a 2048(3) voxel dataset at a resolution of 6144x3072 pixels with a frame rate of approximately 3.3 frames per second. C1 [Jiang, Jie] Univ Illinois, Chicago, IL 60607 USA. [Hereld, Mark; Insley, Joseph; Papka, Michael E.; Rizzi, Silvio; Uram, Thomas; Vishwanath, Venkatram] Argonne Natl Lab, Argonne, IL 60439 USA. [Papka, Michael E.] Northern Illinois Univ, De Kalb, IL USA. RP Jiang, J (reprint author), Univ Illinois, Chicago, IL 60607 USA. EM jjiang24@uic.edu; hereld@anl.gov; insley@anl.gov; papka@anl.gov; srizzi@anl.gov; turam@anl.gov; venkat@anl.gov NR 6 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 133 EP 134 PG 2 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900020 ER PT J AU Rizzi, S Hereld, M Insley, J Papka, ME Uram, T Vishwanath, V AF Rizzi, Silvio Hereld, Mark Insley, Joseph Papka, Michael E. Uram, Thomas Vishwanath, Venkatram BE Bennett, J Childs, H Hadwiger, M TI Large-Scale Co-Visualization for LAMMPS using vl3 SO 2015 IEEE 5TH SYMPOSIUM ON LARGE DATA ANALYSIS AND VISUALIZATION (LDAV) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab AB In this poster we propose to interconnect LAMMPS and vl3, our parallel framework for large-scale visualization and analysis. The goal is co-visualization and exploration at interactive frame rates of large-scale atomistic simulations. We describe the architecture of the proposed system, as well as a preliminary implementation that runs on GPU-based visualization clusters. C1 [Rizzi, Silvio; Hereld, Mark; Insley, Joseph; Papka, Michael E.; Uram, Thomas; Vishwanath, Venkatram] Argonne Natl Lab, Argonne, IL 60439 USA. [Papka, Michael E.] Northern Illinois Univ, De Kalb, IL USA. RP Rizzi, S (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM srizzi@anl.gov; hereld@anl.gov; insley@anl.gov; papka@anl.gov; turam@anl.gov; venkat@anl.gov NR 8 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8517-6 PY 2015 BP 141 EP 142 PG 2 WC Computer Science, Information Systems SC Computer Science GA BF1YF UT WOS:000380444900024 ER PT J AU Wang, DL Janjusic, T Iversen, C Thornton, P Karssovski, M Wu, W Xu, Y AF Wang, Dali Janjusic, Tomislav Iversen, Colleen Thornton, Peter Karssovski, Misha Wu, Wei Xu, Yang GP IEEE TI A Scientific Function Test Framework for Modular Environmental Model Development: Application to the Community Land Model SO 2015 IEEE/ACM 1ST INTERNATIONAL WORKSHOP ON SOFTWARE ENGINEERING FOR HIGH PERFORMANCE COMPUTING IN SCIENCE (SE4HPCS) LA English DT Proceedings Paper CT IEEE ACM 1st International Workshop on Software Engineering for High Performance Computing in Science (SE4HPCS) CY MAY 19-19, 2015 CL Florence, ITALY SP IEEE Comp Soc, Tech Council Software Engn, Assoc Comp Machinery, Special Interest Grp Software Engn, CINECA, Adv Comp Sci & Profess DE Function Test; Modular Design; Community Earth System Model; Community Land Model; Friction Velocity; Photosynthesis; Root AB As environmental models have become more complicated, we need new tools to analyze and validate these models and to facilitate collaboration among field scientists, observation dataset providers, environmental system modelers, and computer scientists. Modular design and function test of environmental models have gained attention recently within the Biological and Environmental Research Program of the U.S. Department of Energy. In this paper, we will present our methods and software tools 1) to analyze environmental software and 2) to generate modules for scientific function testing of environmental models. We have applied these methods to the Community Land Model with three typical scenarios: 1) benchmark case function validation, 2) observation-constraint function validation, and 3) a virtual root module generation for root function investigation and evaluation. We believe that our strategies and experience in scientific function test framework can be beneficial to many other research programs that adapt integrated environmental modeling methodology. C1 [Wang, Dali; Janjusic, Tomislav; Iversen, Colleen; Thornton, Peter; Karssovski, Misha] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Wu, Wei; Xu, Yang] Univ Tennessee, Knoxville, TN 37966 USA. RP Wang, DL (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM wangd@ornl.gov; janjusict@ornl.gov; iversencm@ornl.gov; thorntonpe@ornl.gov; krassovskimb@ornl.gov; wwu12@vols.utk.edu; yxu30@vols.utk.edu OI Xu, Yang/0000-0003-3898-022X NR 22 TC 1 Z9 1 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7082-0 PY 2015 BP 16 EP 23 DI 10.1109/SE4HPCS.2015.10 PG 8 WC Computer Science, Software Engineering SC Computer Science GA BF1RI UT WOS:000380430200003 ER PT S AU Francis, R Estlin, T Gaines, D Bornstein, B Schaffer, S Verma, V Anderson, R Burl, M Chu, S Castano, R Thompson, D Blaney, D de Flores, L Doran, G Nelson, T Wiens, R AF Francis, Raymond Estlin, Tara Gaines, Daniel Bornstein, Benjamin Schaffer, Steven Verma, Vandi Anderson, Robert Burl, Michael Chu, Selina Castano, Rebecca Thompson, David Blaney, Diana de Flores, Lauren Doran, Gary Nelson, Tony Wiens, Roger GP IEEE TI AEGIS Autonomous Targeting for the Curiosity Rover's ChemCam Instrument SO 2015 IEEE APPLIED IMAGERY PATTERN RECOGNITION WORKSHOP (AIPR) SE IEEE Applied Imagery Pattern Recognition Workshop LA English DT Proceedings Paper CT IEEE Applied Imagery Pattern Recognition Workshop (AIPR) CY OCT 13-15, 2015 CL Washington, DC DE autonomous science; mars; planetary exploration; image interpretation; natural scene interpretation AB AEGIS (Autonomous Exploration for Gathering Increased Science) is a software suite that will imminently be operational aboard NASA's Curiosity Mars rover, allowing the rover to autonomously detect and prioritize targets in its surroundings, and acquire geochemical spectra using its ChemCam instrument. ChemCam, a Laser-Induced Breakdown Spectrometer (LIBS), is normally used to study targets selected by scientists using images taken by the rover on a previous sol and relayed by Mars orbiters to Earth. During certain mission phases, ground-based target selection entails significant delays and the use of limited communication bandwidth to send the images. AEGIS will allow the science team to define the properties of preferred targets, and obtain geochemical data more quickly, at lower data penalty, without the extra ground-in-the-loop step. The system uses advanced image analysis techniques to find targets in images taken by the rover's stereo navigation cameras (NavCam), and can rank, filter, and select targets based on properties selected by the science team. AEGIS can also be used to analyze images from ChemCam's Remote Micro Imager (RMI) context camera, allowing it to autonomously target very fine-scale features - such as veins in a rock outcrop - which are too small to detect with the range and resolution of NavCam. AEGIS allows science activities to be conducted in a greater range of mission conditions, and saves precious time and command cycles during the rover's surface mission. The system is currently undergoing initial tests and checkouts aboard the rover, and is expected to be operational by late 2015. Other current activities are focused on science team training and the development of target profiles for the environments in which AEGIS is expected to be used on Mars. C1 [Francis, Raymond; Estlin, Tara; Gaines, Daniel; Bornstein, Benjamin; Schaffer, Steven; Verma, Vandi; Anderson, Robert; Burl, Michael; Chu, Selina; Castano, Rebecca; Thompson, David; Blaney, Diana; de Flores, Lauren; Doran, Gary] CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA. [Nelson, Tony; Wiens, Roger] Los Alamos Natl Lab, Los Alamos, NM USA. RP Francis, R (reprint author), CALTECH, Jet Prop Lab, Pasadena, CA 91125 USA. EM raymond.francis@jpl.nasa.gov NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1550-5219 BN 978-1-4673-9558-8 J9 IEEE APP IMG PAT PY 2015 PG 5 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Computer Science; Engineering; Imaging Science & Photographic Technology GA BF1YA UT WOS:000380444400023 ER PT S AU Moody, DI Wozniak, PR Brumby, SP AF Moody, Daniela I. Wozniak, Przemek R. Brumby, Steven P. GP IEEE TI Automated Variability Selection in Time-domain Imaging Surveys using Sparse Representations with Learned Dictionaries SO 2015 IEEE APPLIED IMAGERY PATTERN RECOGNITION WORKSHOP (AIPR) SE IEEE Applied Imagery Pattern Recognition Workshop LA English DT Proceedings Paper CT IEEE Applied Imagery Pattern Recognition Workshop (AIPR) CY OCT 13-15, 2015 CL Washington, DC DE learned dictionaries; feature dictionaries; Hebbian learning; sparse approximations; catalogs; surveys; astronomical data bases; stars: general, variables ID NATURAL IMAGES AB Exponential growth in data streams and discovery power delivered by modern time-domain imaging surveys creates a pressing need for variability extraction algorithms that are both fully automated and highly reliable. The current state of the art methods based on image differencing are limited by the fact that for every real variable source the algorithm returns a large number of bogus "detections" caused by atmospheric effects and instrumental signatures coupled with imperfect image processing. Here we present a new approach to this problem inspired by recent advances in computer vision and train the machine to learn new features directly from pixel data. The training data set comes from the Palomar Transient Factory survey and consists of small images centered around transient candidates with known real/bogus classification. This set of high-dimensional vectors (similar to 1000 features) is then transformed into a linear representation using the so called dictionary, an overcomplete feature set constructed separately for each class. The data vectors are well approximated with a small number of dictionary elements, i.e. the dictionary representation is sparse. We show how sparse representations can be used to construct informative features for any suitable machine learning classifier. Our top level classifier is based on the random forest algorithm (collections of decision trees) with input data vectors consisting of up to 6 computer vision features and 20 additional context features designed by subject domain experts. Machine-learned features alone provide only an approximate classification with a 20% missed detection rate at a fixed false positive rate of 1%. When automatically extracted features are appended to those constructed by humans, the rate of missed detections is reduced from 8% to about 4% at 1% false positive rate. C1 [Moody, Daniela I.; Brumby, Steven P.] Descartes Labs, Los Alamos, NM 87544 USA. [Wozniak, Przemek R.] Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Moody, DI (reprint author), Descartes Labs, Los Alamos, NM 87544 USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1550-5219 BN 978-1-4673-9558-8 J9 IEEE APP IMG PAT PY 2015 PG 8 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Computer Science; Engineering; Imaging Science & Photographic Technology GA BF1YA UT WOS:000380444400031 ER PT S AU Oyen, D Lanza, N Porter, R AF Oyen, Diane Lanza, Nina Porter, Reid GP IEEE TI Discovering Compositional Trends in Mars Rock Targets from ChemCam Spectroscopy and Remote Imaging SO 2015 IEEE APPLIED IMAGERY PATTERN RECOGNITION WORKSHOP (AIPR) SE IEEE Applied Imagery Pattern Recognition Workshop LA English DT Proceedings Paper CT IEEE Applied Imagery Pattern Recognition Workshop (AIPR) CY OCT 13-15, 2015 CL Washington, DC ID GALE CRATER AB Onboard the Mars rover "Curiosity", ChemCam contains two instruments that gather geological data in the form of remote micro images (RMI) for geologic context and laser-induced breakdown spectroscopy (LIBS) for chemical composition. By analyzing the geochemical compositional depth trends of rocks, surface layers are identified that provide clues to the past atmospheric and aqueous conditions of the planet. LIBS produces the necessary data of chemical depth profiles with successive laser shots. To quickly identify these surface layers, we fit a Gaussian graphical model (GGM) to LIBS depth profiles on rock targets. The learned GGM is a visual representation of conditional dependencies among the set of shots making for faster identification of targets with interesting depth trends that warrant more in-depth analysis by experts. We show that our learned GGMs reveal information about the compositional trends present in rock targets that match observations made in more focused studies on these same targets. RMI images provide complementary details about the rock surface. Using RMI and LIBS features, we can cluster similar rock targets by the properties of the rock's surface texture and depth profile. We present results that show our machine learning methods can help analyze both the breadth and depth of data collected by ChemCam. C1 [Oyen, Diane; Lanza, Nina; Porter, Reid] Los Alamos Natl Lab, Intelligence & Space Res, Los Alamos, NM USA. RP Oyen, D (reprint author), Los Alamos Natl Lab, Intelligence & Space Res, Los Alamos, NM USA. EM doyen@lanl.gov NR 14 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1550-5219 BN 978-1-4673-9558-8 J9 IEEE APP IMG PAT PY 2015 PG 8 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Computer Science; Engineering; Imaging Science & Photographic Technology GA BF1YA UT WOS:000380444400006 ER PT S AU Ukwatta, TN Wozniak, PR AF Ukwatta, Tilan N. Wozniak, Przemek R. GP IEEE TI Integrating Temporal and Spectral Features of Astronomical Data Using Wavelet Analysis for Source Classification SO 2015 IEEE APPLIED IMAGERY PATTERN RECOGNITION WORKSHOP (AIPR) SE IEEE Applied Imagery Pattern Recognition Workshop LA English DT Proceedings Paper CT IEEE Applied Imagery Pattern Recognition Workshop (AIPR) CY OCT 13-15, 2015 CL Washington, DC ID GAMMA-RAY BURSTS; PROMPT EMISSION PROPERTIES; HIGH-Z GRBS; REDSHIFT; STARS AB Temporal and spectral information extracted from a stream of photons received from astronomical sources is the foundation on which we build understanding of various objects and processes in the Universe. Typically astronomers fit a number of models separately to light curves and spectra to extract relevant features. These features are then used to classify, identify, and understand the nature of the sources. However, these feature extraction methods may not be optimally sensitive to unknown properties of light curves and spectra. One can use the raw light curves and spectra as features to train classifiers, but this typically increases the dimensionality of the problem, often by several orders of magnitude. We overcome this problem by integrating light curves and spectra to create an abstract image and using wavelet analysis to extract important features from the image. Such features incorporate both temporal and spectral properties of the astronomical data. Classification is then performed on those abstract features. In order to demonstrate this technique, we have used gamma-ray burst (GRB) data from the NASA's Swift mission to classify GRBs into high-and low-redshift groups. Reliable selection of high-redshift GRBs is of considerable interest in astrophysics and cosmology. C1 [Ukwatta, Tilan N.; Wozniak, Przemek R.] Los Alamos Natl Lab, Space & Remote Sensing ISR 2, Los Alamos, NM 87545 USA. RP Ukwatta, TN (reprint author), Los Alamos Natl Lab, Space & Remote Sensing ISR 2, Los Alamos, NM 87545 USA. EM tilan@lanl.gov; wozniak@lanl.gov NR 20 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1550-5219 BN 978-1-4673-9558-8 J9 IEEE APP IMG PAT PY 2015 PG 10 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Computer Science; Engineering; Imaging Science & Photographic Technology GA BF1YA UT WOS:000380444400012 ER PT S AU Ziemann, AK Theiler, J Messinger, DW AF Ziemann, Amanda K. Theiler, James Messinger, David W. GP IEEE TI Hyperspectral target detection using manifold learning and multiple target spectra SO 2015 IEEE APPLIED IMAGERY PATTERN RECOGNITION WORKSHOP (AIPR) SE IEEE Applied Imagery Pattern Recognition Workshop LA English DT Proceedings Paper CT IEEE Applied Imagery Pattern Recognition Workshop (AIPR) CY OCT 13-15, 2015 CL Washington, DC ID NONLINEAR DIMENSIONALITY REDUCTION; CLASSIFICATION AB Imagery collected from satellites and airborne platforms provides an important tool for remotely analyzing the content of a scene. In particular, the ability to remotely detect a specific material within a scene is of critical importance in nonproliferation and other applications. The sensor systems that process hyperspectral images collect the high-dimensional spectral information necessary to perform these detection analyses. For a d-dimensional hyperspectral image, however, where d is the number of spectral bands, it is common for the data to inherently occupy an m-dimensional space with m << d. In the remote sensing community, this has led to recent interest in the use of manifold learning, which seeks to characterize the embedded lower-dimensional, nonlinear manifold that the data discretely approximate. The research presented here focuses on a graph theory and manifold learning approach to target detection, using an adaptive version of locally linear embedding that is biased to separate target pixels from background pixels. This approach incorporates multiple target signatures for a particular material, accounting for the spectral variability that is often present within a solid material of interest. C1 [Ziemann, Amanda K.; Theiler, James] Los Alamos Natl Lab, Intelligence & Space Res Div, Los Alamos, NM 87545 USA. [Messinger, David W.] Rochester Inst Technol, Carlson Ctr Imaging Sci, Rochester, NY 14623 USA. RP Ziemann, AK (reprint author), Los Alamos Natl Lab, Intelligence & Space Res Div, Los Alamos, NM 87545 USA. EM ziemann@lanl.gov NR 35 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1550-5219 BN 978-1-4673-9558-8 J9 IEEE APP IMG PAT PY 2015 PG 7 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Computer Science; Engineering; Imaging Science & Photographic Technology GA BF1YA UT WOS:000380444400026 ER PT J AU Liang, ZX AF Liang, Zhenxian GP IEEE TI Advanced Packaging Technologies for Fully Exploiting Attributes of WBG Power Electronics SO 2015 IEEE INTERNATIONAL WORKSHOP ON INTEGRATED POWER PACKAGING (IWIPP) LA English DT Proceedings Paper CT IEEE International Workshop on Integrated Power Packaging (IWIPP) CY MAY 03-06, 2015 CL chicago, IL SP IEEE Power Elect Soc DE SiC power module; planar bond interconnection; direct cooling; integrated packaging AB A set of technical parameters of power electronics package has been employed to characterize the packaging technologies, in order to improve the criteria such as efficiency, cost-effectiveness and reliability of wide bandgap (WBG) power semiconductors in power conversion applications. Some technologies such as integrated gate driver, planar electrical interconnection, and integrated cooling have been developed. The comprehensive improvements in module's electrical, thermal performance and manufacturability help utilize fully the attributes provided exclusively by the WBG power semiconductors. The technical advancements lead to cost-effective, high efficiency, high power density in automotive electric power conversion systems. C1 [Liang, Zhenxian] Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Oak Ridge, TN 37831 USA. RP Liang, ZX (reprint author), Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Oak Ridge, TN 37831 USA. EM liangz@ornl.gov OI Liang, Zhenxian/0000-0002-2811-0944 NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9883-8 PY 2015 BP 28 EP 31 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF1TQ UT WOS:000380436000007 ER PT J AU Choi, DH Randall, C Furman, E Ma, BH Balachandran, UB Zhang, SH Lanagan, M AF Choi, Doo-Hyun Randall, Clive Furman, Eugene Ma, Beihai Balachandran, U. Balu Zhang, Shihai Lanagan, Mike GP IEEE TI Energy and Power Densities of Capacitors and Dielectrics SO 2015 IEEE INTERNATIONAL WORKSHOP ON INTEGRATED POWER PACKAGING (IWIPP) LA English DT Proceedings Paper CT IEEE International Workshop on Integrated Power Packaging (IWIPP) CY MAY 03-06, 2015 CL chicago, IL SP IEEE Power Elect Soc ID CERAMICS; STORAGE AB Capacitor miniaturization is directly related to improved energy density and power density, which are determined at the component and material levels for multilayer ceramic, electrolytic and polymer film classifications. The volumetric efficiency of a capacitor depends on capacitance value, operating voltage and equivalent series resistance. Permittivity and loss are the primary material metrics governing energy and power densities of dielectric materials. High temperature capacitor reliability must be improved to close this gap in terms of scientific understanding and engineering design of these components. Power density values range enormously from 108 W/cm(3) at the material level through to the application level at 50 W/cm(3) at the inverter level. C1 [Choi, Doo-Hyun; Randall, Clive; Furman, Eugene; Lanagan, Mike] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. [Ma, Beihai; Balachandran, U. Balu] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. [Zhang, Shihai] PolyK, State Coll, PA USA. RP Choi, DH (reprint author), Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA. EM mxl46@psu.edu NR 10 TC 0 Z9 0 U1 3 U2 4 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9883-8 PY 2015 BP 52 EP 55 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF1TQ UT WOS:000380436000013 ER PT J AU Liang, ZX AF Liang, Zhenxian GP IEEE TI Planar-Bond-All: A Technology for Three-dimensional Integration of Multiple Packaging Functions into Advanced Power Modules SO 2015 IEEE INTERNATIONAL WORKSHOP ON INTEGRATED POWER PACKAGING (IWIPP) LA English DT Proceedings Paper CT IEEE International Workshop on Integrated Power Packaging (IWIPP) CY MAY 03-06, 2015 CL chicago, IL SP IEEE Power Elect Soc DE 3-D packaging; power module (Si and SiC); high density; double sided cooling; direct cooling; integrated packaging AB A packaging approach has been developed for fabrication of power electronics modules. The multi functions of power packaging are fulfilled through three-dimensional (3-D) planar electrical interconnection, and double sided direct cooling. The further integration of these features into one packaging process has been demonstrated with highly integrated silicon (Si) and silicon carbide (SiC) phase leg power module prototypes. The comprehensive improvements in module's electrical, thermal performance and manufacturability lead to cost-effective, high efficiency, high power density power conversion in electric drive systems of modern vehicles C1 [Liang, Zhenxian] Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Oak Ridge, TN 37831 USA. RP Liang, ZX (reprint author), Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Oak Ridge, TN 37831 USA. EM liangz@ornl.gov OI Liang, Zhenxian/0000-0002-2811-0944 NR 4 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9883-8 PY 2015 BP 115 EP 118 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF1TQ UT WOS:000380436000029 ER PT J AU Wang, ZQ Shi, XJ Tolbert, LM Wang, FF Liang, ZX Costinett, DJ Blalock, BJ AF Wang, Zhiqiang Shi, Xiaoji Tolbert, Leon M. Wang, Fei (Fred) Liang, Zhenxian Costinett, Daniel J. Blalock, Benjamin J. GP IEEE TI Development of a Board-level Integrated Silicon Carbide MOSFET Power Module for High Temperature Application SO 2015 IEEE INTERNATIONAL WORKSHOP ON INTEGRATED POWER PACKAGING (IWIPP) LA English DT Proceedings Paper CT IEEE International Workshop on Integrated Power Packaging (IWIPP) CY MAY 03-06, 2015 CL chicago, IL SP IEEE Power Elect Soc ID PHASE-LEG MODULE; DESIGN AB A board-level integrated silicon carbide (SiC) MOSFET power module is developed in this work for high temperature and high power density applications. Specifically, a silicon-on-insulator (SOI) based gate driver is designed, fabricated and tested at different switching frequencies and temperatures. Also, utilizing high temperature packaging technologies, a 1200 V / 100 A SiC MOSFET phase-leg power module is built. The switching performance of the fabricated power module is fully evaluated at different temperatures up to 225 degrees C. Moreover, a buck converter prototype incorporating the SOI gate driver and SiC power module is built for high temperature continuous operation. The converter is operated within a wide range from 10 kHz to 100 kHz, with its junction temperature monitored by a thermo-sensitive electrical parameter (TSEP). The experimental results demonstrate that the integrated power module is able to operate at a junction temperature greater of 232 degrees C. C1 [Wang, Zhiqiang; Shi, Xiaoji; Tolbert, Leon M.; Wang, Fei (Fred); Liang, Zhenxian; Costinett, Daniel J.; Blalock, Benjamin J.] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. [Tolbert, Leon M.; Wang, Fei (Fred); Liang, Zhenxian; Costinett, Daniel J.] Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Knoxville, TN 37932 USA. RP Wang, ZQ (reprint author), Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN 37996 USA. OI Tolbert, Leon/0000-0002-7285-609X NR 15 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9883-8 PY 2015 BP 123 EP 126 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF1TQ UT WOS:000380436000031 ER PT S AU Cogliati, A Duan, ZY Wohlberg, B AF Cogliati, Andrea Duan, Zhiyao Wohlberg, Brendt BE Erdogmus, D Akcakaya, M Kozat, S Larsen, J TI PIANO MUSIC TRANSCRIPTION WITH FAST CONVOLUTIONAL SPARSE CODING SO 2015 IEEE INTERNATIONAL WORKSHOP ON MACHINE LEARNING FOR SIGNAL PROCESSING SE IEEE International Workshop on Machine Learning for Signal Processing LA English DT Proceedings Paper CT IEEE International Workshop on Machine Learning for Signal Processing CY SEP 17-20, 2015 CL Boston, NY SP IEEE Signal Processing Soc, Northeast Univ, Intel DE Automatic Music Transcription; Convolutional Sparse Coding; Shift Invariant; Sparse Representation ID NONNEGATIVE MATRIX FACTORIZATION; MULTIPITCH ESTIMATION; REPRESENTATIONS AB Automatic music transcription (AMT) is the process of converting an acoustic musical signal into a symbolic musical representation, such as a MIDI file, which contains the pitches, the onsets and offsets of the notes and, possibly, their dynamics and sources (i.e., instruments). Most existing algorithms for AMT operate in the frequency domain, which introduces the well known time/frequency resolution trade-off of the Short Time Fourier Transform and its variants. In this paper, we propose a time-domain transcription algorithm based on an efficient convolutional sparse coding algorithm in an instrumentspecific scenario, i.e., the dictionary is trained and tested on the same piano. The proposed method outperforms a current state-of-the-art AMT method by over 26% in F-measure, achieving a median Fmeasure of 93.6%, and drastically increases both time and frequency resolutions, especially for the lowest octaves of the piano keyboard. C1 [Cogliati, Andrea; Duan, Zhiyao] Univ Rochester, Rochester, NY USA. [Wohlberg, Brendt] Los Alamos Natl Lab, Los Alamos, NM USA. RP Cogliati, A (reprint author), Univ Rochester, Rochester, NY USA. EM andrea.cogliati@rochester.edu; zhiyao.duan@rochester.edu; brendt@lanl.gov NR 28 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2161-0363 BN 978-1-4673-7454-5 J9 IEEE INT WORKS MACH PY 2015 PG 6 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1JO UT WOS:000380402700020 ER PT J AU Awida, MH Gonin, I Romanov, G Khabiboulline, T Yakovlev, V AF Awida, M. H. Gonin, I. Romanov, G. Khabiboulline, T. Yakovlev, V. GP IEEE TI Modeling of Electromagnetic Heating in RF Copper Accelerating Cavities SO 2015 IEEE MTT-S INTERNATIONAL CONFERENCE ON NUMERICAL ELECTROMAGNETIC AND MULTIPHYSICS MODELING AND OPTIMIZATION (NEMO) LA English DT Proceedings Paper CT IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization CY AUG 11-14, 2015 CL Ottawa, CANADA SP IEEE, MTT-S, IEEE Ottawa Section DE Normal conducting RF cavities; electromagnetic heating; frequency shift due to thermal stresses AB Electromagnetic heating is a critical issue in normal conducting copper RF cavities that are employed in particle accelerators. With several tens to hundreds of kilowatts dissipated RF power, there must be an effective cooling scheme whether it is water or air based or even a combination of both. In this paper we investigate the electromagnetic heating in multiple cavities that were designed at Fermilab exploring how the electromagnetic and thermal analyses are coupled together to properly design the cooling of such cavities. C1 [Awida, M. H.; Gonin, I.; Romanov, G.; Khabiboulline, T.; Yakovlev, V.] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RP Awida, MH (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6811-4 PY 2015 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BF2FX UT WOS:000380464100058 ER PT J AU Awida, MH Gonin, I Passarelli, D Sukanov, A Khabiboulline, T Yakovlev, V AF Awida, M. H. Gonin, I. Passarelli, D. Sukanov, A. Khabiboulline, T. Yakovlev, V. GP IEEE TI Multiphysics Analysis of Frequency Detuning in Superconducting RF Cavities for Proton Particle Accelerators SO 2015 IEEE MTT-S INTERNATIONAL CONFERENCE ON NUMERICAL ELECTROMAGNETIC AND MULTIPHYSICS MODELING AND OPTIMIZATION (NEMO) LA English DT Proceedings Paper CT IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization CY AUG 11-14, 2015 CL Ottawa, CANADA SP IEEE, MTT-S, IEEE Ottawa Section DE Superconducting RF cavities; Microphonics; Lorentz force detuning; multiphysics analysis AB Multiphysics analyses for superconducting cavities are essential in the course of cavity design to meet stringent requirements on cavity frequency detuning. Superconducting RF cavities are the core accelerating elements in modern particle accelerators whether it is proton or electron machine, as they offer extremely high quality factors thus reducing the RF losses per cavity. However, the superior quality factor comes with the challenge of controlling the resonance frequency of the cavity within few tens of hertz bandwidth. In this paper, we investigate how the multiphysics analysis plays a major role in proactively minimizing sources of frequency detuning, specifically; microphonics and Lorentz Force Detuning (LFD) in the stage of RF design of the cavity and mechanical design of the niobium shell and the helium vessel. C1 [Awida, M. H.; Gonin, I.; Passarelli, D.; Sukanov, A.; Khabiboulline, T.; Yakovlev, V.] Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. RP Awida, MH (reprint author), Fermilab Natl Accelerator Lab, POB 500, Batavia, IL 60510 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-6811-4 PY 2015 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BF2FX UT WOS:000380464100059 ER PT S AU Anwar, F Nogan, J Zarkesh-Ha, P Osniski, M AF Anwar, Farhana Nogan, John Zarkesh-Ha, Payman Osniski, Marek GP IEEE TI Multilevel Resistance in Ti/Pt/AlOx/HfOy/Ti/Pt/Ag Resistive Switching Devices SO 2015 IEEE NANOTECHNOLOGY MATERIALS AND DEVICES CONFERENCE (NMDC) SE IEEE Nanotechnology Materials and Devices Conference LA English DT Proceedings Paper CT IEEE Nanotechnology Materials and Devices Conference (NMDC) CY SEP 12-16, 2015 CL Anchorage, AR DE Memories; MOM resistive switching devices; RRAMs; Neuromorphic computing ID MEMORY AB This paper demonstrates the potential use of AlOx/HfOy-based resistive switching device in analog and synaptic electronics. The novelty of this work is based on the fact that a large number of states were found for both positive (10 states) and negative (22 states) biases, compared to the reported literature. Multiple states were obtained by varying the compliance current. Furthermore, the device showed very low switching voltage (< 0.3 V) and current (similar to 10 mu A). C1 [Anwar, Farhana; Osniski, Marek] Univ New Mexico, Ctr High Technol Mat, 1313 Goddard St SE, Albuquerque, NM 87106 USA. [Nogan, John] Sandia Natl Labs, Ctr Integrated Nanotechnol, Albuquerque, NM 87123 USA. [Zarkesh-Ha, Payman] Univ New Mexico, Dept Elect & Comp Engn, Albuquerque, NM 87131 USA. RP Anwar, F (reprint author), Univ New Mexico, Ctr High Technol Mat, 1313 Goddard St SE, Albuquerque, NM 87106 USA. EM fanwar@unm.edu; jnogan@sandia.gov; payman@ece.unm.edu; osinski@chtm.unm.edu NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2378-377X BN 978-1-4673-9362-1 J9 IEEE NANOTECHNOL MAT PY 2015 PG 3 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Engineering; Science & Technology - Other Topics; Materials Science GA BF1ZE UT WOS:000380447300044 ER PT S AU Palapati, NKR Demir, M Harris, CT Subramanian, A Gupta, RB AF Palapati, N. K. R. Demir, M. Harris, C. T. Subramanian, A. Gupta, R. B. GP IEEE TI Enhancing the Electronic Conductivity of Lignin-sourced, Sub-micron Carbon Particles SO 2015 IEEE NANOTECHNOLOGY MATERIALS AND DEVICES CONFERENCE (NMDC) SE IEEE Nanotechnology Materials and Devices Conference LA English DT Proceedings Paper CT IEEE Nanotechnology Materials and Devices Conference (NMDC) CY SEP 12-16, 2015 CL Anchorage, AR DE Bio-mass; conductivity; dielectrophoresis; lithium batteries; lignin AB This paper presents electronic conductivity measurements from three different types of sub-micron scale carbon nanoparticles, each of which is sourced from Lignin. The particles are synthesized using a combination of hydrothermal and high-temperature processing steps involving suitable catalysts. The synthesis parameters are found to have an impact on the extent of graphitization within the carbon particles. Furthermore, an increasing graphitic content is found to result in higher electronic conductivities, which is an essential attribute in their potential application as environmentally-friendly lithium-ion (Li-ion) battery anodes. C1 [Palapati, N. K. R.; Subramanian, A.] Virginia Commonwealth Univ, Dept Mech & Nucl Engn, Med Coll Virginia Campus, Richmond, VA 23284 USA. [Demir, M.] VCU, Dept Chem & Life Sci Engn, Richmond, VA 23284 USA. [Harris, C. T.] Sandia Natl Labs, DOE Ctr Integrated Nanotechnol, Albuquerque, NM 87185 USA. [Gupta, R. B.] Virginia Commonwealth Univ, Res, Richmond, VA 23284 USA. [Gupta, R. B.] Virginia Commonwealth Univ, Dept Chem & Life Sci Engn, Richmond, VA 23284 USA. RP Palapati, NKR (reprint author), Virginia Commonwealth Univ, Dept Mech & Nucl Engn, Med Coll Virginia Campus, Richmond, VA 23284 USA. EM palapatinkr@vcu.edu; demirm@vcu.edu; ctharri@sandia.gov; asubramanian@vcu.edu; rbgupta@vcu.edu NR 8 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2378-377X BN 978-1-4673-9362-1 J9 IEEE NANOTECHNOL MAT PY 2015 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Engineering; Science & Technology - Other Topics; Materials Science GA BF1ZE UT WOS:000380447300028 ER PT S AU Tsai, H Wang, HL AF Tsai, Hsinhan Wang, Hsing-Lin GP IEEE TI Nanoscaled Self-Assemblies for Facilitated Energy Conversion SO 2015 IEEE NANOTECHNOLOGY MATERIALS AND DEVICES CONFERENCE (NMDC) SE IEEE Nanotechnology Materials and Devices Conference LA English DT Proceedings Paper CT IEEE Nanotechnology Materials and Devices Conference (NMDC) CY SEP 12-16, 2015 CL Anchorage, AR DE Conjugated oligomer; Langmuir-Blodgett; Self-assembly; Interfacial Materials; Electron transfer ID SOLAR-CELLS AB Nanoscaled self-assemblies of conjugated polymers with tunable electronic and optical properties serves as fantastic interfacial layer to facilitate electron (hole) transfer across donor acceptor interface that leads to 60% improvement in power conversion efficiency. The manuscript aim at revealing the synthesis and characterization of these novel conjugated oligomer and how they come together to form nanoscaled self-assembled monolayer and multilayers. In addition, our results reveal understanding of the underlying mechanism and fundamental principle of molecular assemblies that leads to desired structure and properties for solar cell applications. C1 [Tsai, Hsinhan; Wang, Hsing-Lin] Los Alamos Natl Lab, Phys Chem & Spect Grp, Los Alamos, NM 87545 USA. RP Tsai, H (reprint author), Los Alamos Natl Lab, Phys Chem & Spect Grp, Los Alamos, NM 87545 USA. EM hwang@lanl.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2378-377X BN 978-1-4673-9362-1 J9 IEEE NANOTECHNOL MAT PY 2015 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary SC Engineering; Science & Technology - Other Topics; Materials Science GA BF1ZE UT WOS:000380447300006 ER PT J AU Higbee, S AF Higbee, Shawn GP IEEE TI A Practical Strategy for Spectral Library Partitioning and Least-Squares Identification SO 2015 IEEE SIGNAL PROCESSING AND SIGNAL PROCESSING EDUCATION WORKSHOP (SP/SPE) LA English DT Proceedings Paper CT 2015 IEEE Signal Processing and Signal Processing Education Workshop (SP/SPE) CY AUG 09-12, 2015 CL Salt Lake City, UT DE least squares methods; remote sensing; spectral library; regression analysis; inverse problems AB This paper proposes a method of partitioning large data libraries into smaller sub-partitions, in such a way that a least-squares-based identification process will be numerically better behaved. An example from a well-known remote sensing spectral library is used to illustrate various seed strategies for the partitioning as well as various assignment strategies. In the example shown seed strategy is relatively unimportant for a library of this size, but there is a substantial improvement in least-squares performance with SVD-based partitioning for both point and interval estimates. Several context-dependent variants of this strategy are also proposed. C1 [Higbee, Shawn] Lawrence Livermore Natl Lab, Pass Remote Sensing Grp, Livermore, CA 94550 USA. RP Higbee, S (reprint author), Lawrence Livermore Natl Lab, Pass Remote Sensing Grp, Livermore, CA 94550 USA. EM higbee1@llnl.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9169-6 PY 2015 BP 376 EP 379 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF1PJ UT WOS:000380425300066 ER PT J AU Arendt, DL Burtner, R Best, DM Bos, ND Gersh, JR Piatko, CD Paul, CL AF Arendt, Dustin L. Burtner, Russ Best, Daniel M. Bos, Nathan D. Gersh, John R. Piatko, Christine D. Paul, Celeste Lyn GP IEEE BE Harrison, L Prigent, N Engle, S Best, D Goodall, J TI Ocelot: User-Centered Design of a Decision Support Visualization for Network Quarantine SO 2015 IEEE SYMPOSIUM ON VISUALIZATION FOR CYBER SECURITY (VIZSEC) LA English DT Proceedings Paper CT IEEE 5th Symposium on Large Data Analysis and Visualization (LDAV) CY OCT 25-26, 2015 CL Chicago, IL SP SCI, nVIDIA, Argonne Natl Lab AB Most cyber security research is focused on detecting network intrusions or anomalies through the use of automated methods, exploratory visual analytics systems, or real-time monitoring using dynamic visual representations. However, there has been minimal investigation of effective decision support systems for cyber analysts. This paper describes the user-centered design and development of a decision support visualization for active network defense. Ocelot helps the cyber analyst assess threats to a network and quarantine affected computers from the healthy parts of a network. The described web-based, functional visualization prototype integrates and visualizes multiple data sources through the use of a hybrid space partitioning tree and node link diagram. We describe our design process for requirements gathering and design feedback which included expert interviews, iterative design, and a user study. C1 [Arendt, Dustin L.; Burtner, Russ; Best, Daniel M.] Pacific Northwest Natl Lab, Richland, WA 99352 USA. [Bos, Nathan D.; Gersh, John R.; Piatko, Christine D.] Johns Hopkins Univ, Appl Phys Lab, Baltimore, MD 21218 USA. [Paul, Celeste Lyn] US Dept Def, Washington, DC USA. RP Arendt, DL (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM Dustin.Arendt@pnnl.gov NR 41 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7599-3 PY 2015 PG 8 WC Computer Science, Information Systems; Computer Science, Software Engineering; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA BF2AZ UT WOS:000380451800001 ER PT S AU Choi, S Zage, D Choe, YR Wasilow, B AF Choi, Sung Zage, David Choe, Yung Ryn Wasilow, Brent BE Altintas, O Zhang, J TI Physically Unclonable Digital ID SO 2015 IEEE THIRD INTERNATIONAL CONFERENCE ON MOBILE SERVICES MS 2015 SE IEEE International Conference on Mobile Services LA English DT Proceedings Paper CT IEEE Third International Conference on Mobile Services MS CY JUN 27-JUL 02, 2015 CL New York, NY SP Conf publishing Services, IEEE Comp Soc DE PUF; mobile hardware security; cloning; access control; authentication; biometrics; computer security; cyber security; identification of persons; identity management systems; digital signatures ID AUTHENTICATION AB The Center for Strategic and International Studies estimates the annual cost from cybercrime to be more than $400 billion. Most notable is the recent digital identity thefts that compromised millions of accounts. These attacks emphasize the security problems of using clonable static information. One possible solution is the use of a physical device known as a Physically Unclonable Function (PUF). PUFs can be used to create encryption keys, generate random numbers, or authenticate devices. While the concept shows promise, current PUF implementations are inherently problematic: inconsistent behavior, expensive, susceptible to modeling attacks, and permanent. Therefore, we propose a new solution by which an unclonable, dynamic digital identity is created between two communication endpoints such as mobile devices. This Physically Unclonable Digital ID (PUDID) is created by injecting a data scrambling PUF device at the data origin point that corresponds to a unique and matching descrambler/hardware authentication at the receiving end. This device is designed using macroscopic, intentional anomalies, making them inexpensive to produce. PUDID is resistant to cryptanalysis due to the separation of the challenge-response pair and a series of hash functions. PUDID is also unique in that by combining the PUF device identity with a dynamic human identity, we can create true two-factor authentication. We also propose an alternative solution that eliminates the need for a PUF mechanism altogether by combining tamper resistant capabilities with a series of hash functions. This tamper resistant device, referred to as a Quasi-PUDID (Q-PUDID), modifies input data, using a black-box mechanism, in an unpredictable way. By mimicking PUF attributes, Q-PUDID is able to avoid traditional PUF challenges thereby providing high-performing physical identity assurance with or without a low performing PUF mechanism. Three different application scenarios with mobile devices for PUDID and Q-PUDID have been analyzed to show their unique advantages over traditional PUFs and outline the potential for placement in a host of applications. C1 [Choi, Sung; Zage, David; Choe, Yung Ryn; Wasilow, Brent] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Choi, S (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM schoi@sandia.gov; djzage@sandia.gov; yrchoe@sandia.gov; bwasilo@sandia.gov NR 32 TC 0 Z9 0 U1 5 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-6429 BN 978-1-4673-7284-8 J9 IEEE INT CONF MO PY 2015 BP 105 EP 111 DI 10.1109/MS.2015.24 PG 7 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BF1JH UT WOS:000380402000014 ER PT J AU Kidwell, P Boakye, K AF Kidwell, Paul Boakye, Kofi GP IEEE TI Object Detection in Low Resolution Overhead Imagery SO 2015 IEEE WINTER APPLICATIONS AND COMPUTER VISION WORKSHOPS (WACVW) LA English DT Proceedings Paper CT IEE* Win* App* Com* Vis* Wor* CY JAN 06-09, 2015 CL Waikoloa Beach, HI SP IEEE COMP SOC, IEEE BIOMETRICS COUNCIL, AMAZON, CPS ID AERIAL IMAGES; CAR DETECTION AB The proliferation of overhead image sensors has yielded benefits to many applications, including civil transportation, military reconnaissance, and environmental monitoring. Central to these and other applications is the ability to reliably detect and localize rigid man-made objects within large field-of-view images. In this paper we present an automated object detection approach that performs reliably on low-resolution imagery given limited annotated training data. Our two-stage system couples a fast sliding-window object detector with a more computationally-intensive, high-accuracy stage using ensembles of 2D templates. A thorough development process has led to contributions including: (1) multiple feature extraction during template matching; (2) formulation of template selection as a feature selection problem; and (3) the use of background models to normalize each template and image pair. For validation, we demonstrate successful detection of a specific aircraft model over a range of lighting conditions and operating environments. C1 [Kidwell, Paul; Boakye, Kofi] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Kidwell, P (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM kidwell1@llnl.gov; boakye1@llnl.gov NR 15 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-0-7695-5469-3 PY 2015 BP 21 EP 27 DI 10.1109/WACVW.2015.16 PG 7 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2PE UT WOS:000380487300005 ER PT J AU Tuarob, S Glass, KA Giles, CL AF Tuarob, Suppawong Glass, Kevin A. Giles, C. Lee GP IEEE TI NMRexSeer: Metadata Extraction and Search for Large Scale Nuclear Magnetic Resonance (NMR) Experimental Data SO 2015 INTERNATIONAL COMPUTER SCIENCE AND ENGINEERING CONFERENCE (ICSEC) LA English DT Proceedings Paper CT International Computer Science and Engineering Conference (ICSEC) CY NOV 23-26, 2015 CL Chiang Mai, THAILAND SP IEEE Thailand Sect, IEEE Xplore Digital Lib, ARCCIT, Maejo Univ, Chiang Mai Univ, INEX, NETBRIGHT, Hewlett Packard Enterprise, CISCO, ECTI Assoc, IBM AB Sciences have become both complex and demanding for cutting-edge technology and resources to perform experiments. Since 1997, the Environmental Molecular Sciences Laboratory (EMSL) has served as a user facility housing resources for global scientists to perform experiments necessary to their research. Overtime, the generated data has become both massive and redundant. To encourage better management and reuse of such experimental data, MyEMSL has emerged as an in-house centralized data management tool that collects and distributes data from the experiments at EMSL. Nuclear Magnetic Resonance Spectroscopy (NMR) is one of the major experiment resources that EMSL houses. We discuss NMRexSeer, a proposed digital library system that automatically extracts and indexes NMR specific metadata from NMR experimental data packages. The system also generates visualized previews and provides a search interface for easy access and discovery of desired data. C1 [Tuarob, Suppawong] Mahidol Univ, Informat & Commun Technol, Bangkok 10700, Thailand. [Glass, Kevin A.] Pacific Northwest Natl Lab, William R Wiley Environm Mol Sci Lab, Richland, WA USA. [Giles, C. Lee] Penn State Univ, Informat Sci & Technol, University Pk, PA 16802 USA. RP Tuarob, S (reprint author), Mahidol Univ, Informat & Commun Technol, Bangkok 10700, Thailand. EM suppawong.tua@mahidol.ac.th; kevin.glass@pnnl.gov; giles@ist.psu.edu NR 21 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7825-3 PY 2015 BP 15 EP 20 PG 6 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BF2BR UT WOS:000380453600005 ER PT S AU Crain, S Mount, E Baek, SY Kim, J Maunz, P AF Crain, Stephen Mount, Emily Baek, So-Young Kim, Jungsang Maunz, Peter GP IEEE TI Application of OMEMS Technology in Trapped Ion Quantum Computing SO 2015 INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS (OMN) SE International Conference on Optical MEMS and Nanophotonics LA English DT Proceedings Paper CT International Conference on Optical MEMS and Nanophotonics (OMN) CY AUG 02-05, 2015 CL Jerusalem, ISRAEL SP IEEE Photon Soc, Ministry Sci Technol Space, Hebrew UnivJerusalem ID BEAM-STEERING SYSTEM; HIGH-SPEED AB Scalability is one of the main challenges of trapped ion based quantum computation, partly limited by the ability to manipulate the increasing number of quantum bits (qubits). For individual addressing of qubits, microelectromechanical systems (MEMS) technology allows one to design movable micromirrors to focus laser beams on individual ions and steer the focal point in two dimensions. This system is able to scale to multiple beams, has switching speeds comparable to typical single qubit gate times, and has negligible crosstalk on neighboring ions. C1 [Crain, Stephen; Mount, Emily; Baek, So-Young; Kim, Jungsang] Duke Univ, Fitzpatrick Inst Photon, Elect & Comp Engn Dept, Durham, NC 27708 USA. [Maunz, Peter] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Crain, S (reprint author), Duke Univ, Fitzpatrick Inst Photon, Elect & Comp Engn Dept, Durham, NC 27708 USA. EM jungsang@duke.edu NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-5033 BN 978-1-4673-6834-6 J9 INT CONF OPTIC MEMS PY 2015 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics SC Engineering; Science & Technology - Other Topics; Optics GA BF2ZK UT WOS:000380513000069 ER PT S AU Ogando, K Foley, JJ Lopez, D AF Ogando, Karim Foley, Jonathan J. Lopez, Daniel GP IEEE TI High-index dielectric Huygens metasurface SO 2015 INTERNATIONAL CONFERENCE ON OPTICAL MEMS AND NANOPHOTONICS (OMN) SE International Conference on Optical MEMS and Nanophotonics LA English DT Proceedings Paper CT International Conference on Optical MEMS and Nanophotonics (OMN) CY AUG 02-05, 2015 CL Jerusalem, ISRAEL SP IEEE Photon Soc, Ministry Sci Technol Space, Hebrew UnivJerusalem DE metasurfaces; dielectric particles; Huygens surface; flat lenses; MEMS AB We describe a dielectric Huygens metasurfaces capable to manipulate light in the visible regime with 100% transmission efficiency. The metasurface is comprised of TiO2 cylindrical nanoparticles embedded in a medium with lower refraction index. The interaction between dielectric disks is considered and it is used as a parameter to optimize the optical properties of the metasurface. C1 [Ogando, Karim; Foley, Jonathan J.; Lopez, Daniel] Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Ogando, K (reprint author), Argonne Natl Lab, Ctr Nanoscale Mat, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 8 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-5033 BN 978-1-4673-6834-6 J9 INT CONF OPTIC MEMS PY 2015 PG 2 WC Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Optics SC Engineering; Science & Technology - Other Topics; Optics GA BF2ZK UT WOS:000380513000058 ER PT J AU Dailey, JM Agarwal, A Toliver, P Peters, NA AF Dailey, James M. Agarwal, Anjali Toliver, Paul Peters, Nick A. GP IEEE TI Quantum Communications with Optical Phase Sensitive Amplifiers SO 2015 PHOTONICS NORTH LA English DT Proceedings Paper CT Photonics North 2015 CY JUN 09-11, 2015 CL Ottawa, CANADA DE Quantum Communications; Parametric Amplifiers; Phase-Sensitive Amplification; Nonlinear Optics; Four-Wave Mixing AB We review our recent work exploring the use of phase-sensitive amplification for improving the transmission and detection of quantum signals. C1 [Dailey, James M.; Agarwal, Anjali; Toliver, Paul] Appl Commun Sci, Red Bank, NJ 07701 USA. [Peters, Nick A.] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Dailey, JM (reprint author), Appl Commun Sci, Red Bank, NJ 07701 USA. EM jdailey@appcomsci.com RI Peters, Nicholas/F-2530-2010 OI Peters, Nicholas/0000-0002-7215-9630 NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-6806-3 PY 2015 PG 1 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF2ID UT WOS:000380469700049 ER PT J AU Meng, X Grote, R Dadap, JI Osgood, RM Panoiu, N Camillone, N Lu, DY AF Meng, Xiang Grote, Richard Dadap, Jerry I. Osgood, Richard M. Panoiu, Nicolae Camillone, Nick Lu, Deyu GP IEEE TI Emerging Plasmonic Applications Explored with Cluster Parallel Computing SO 2015 PHOTONICS NORTH LA English DT Proceedings Paper CT Photonics North 2015 CY JUN 09-11, 2015 CL Ottawa, CANADA DE Plasmonics; parallel computing; simulations C1 [Meng, Xiang; Grote, Richard; Dadap, Jerry I.; Osgood, Richard M.] Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. [Panoiu, Nicolae] UCL, Dept Elect Engn, London WC1E 6BT, England. [Camillone, Nick; Lu, Deyu] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Meng, X (reprint author), Columbia Univ, Dept Appl Phys & Appl Math, New York, NY 10027 USA. EM osgood@columbia.edu NR 3 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-6806-3 PY 2015 PG 1 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF2ID UT WOS:000380469700065 ER PT J AU Meng, X Yang, H Dadap, JI Osgood, RM Camillone, N AF Meng, Xiang Yang, Hao Dadap, Jerry I. Osgood, Richard M., Jr. Camillone, N., III GP IEEE TI Two-Color Assisted Field Enhancement for Vacuum Tunneling of a Metallic-Tip/Substrate Systems SO 2015 PHOTONICS NORTH LA English DT Proceedings Paper CT Photonics North 2015 CY JUN 09-11, 2015 CL Ottawa, CANADA DE Plasmonics; Field enhancement of STM tip AB We investigate the optical field enhancement for two-color ultrafast laser pulses incident on a nanoscopic tungsten probe tip suspended over a silver substrate. Experimental measurements of vacuum tip tunneling are paired with computations using full 3D finite-difference time-domain (FDTD) calculations. The measured spatial response of the tip current matches the calculated dependence. C1 [Meng, Xiang; Yang, Hao; Dadap, Jerry I.; Osgood, Richard M., Jr.] Columbia Univ, Dept Elect Engn, New York, NY 10027 USA. [Camillone, N., III] Brookhaven Natl Lab, Upton, NY USA. RP Meng, X (reprint author), Columbia Univ, Dept Elect Engn, New York, NY 10027 USA. NR 4 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-6806-3 PY 2015 PG 1 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF2ID UT WOS:000380469700020 ER PT J AU Lee, EA Niknami, M Nouidui, TS Wetter, M AF Lee, Edward A. Niknami, Mehrdad Nouidui, Thierry S. Wetter, Michael GP IEEE TI Modeling and Simulating Cyber-Physical Systems using CyPhySim SO 2015 PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON EMBEDDED SOFTWARE (EMSOFT) LA English DT Proceedings Paper CT Proceedings of the International Conference on Embedded Software (EMSOFT) CY OCT 04-09, 2015 CL Amsterdam, NETHERLANDS SP Acm, IEEE, RECORE, NEC, Univ Leiden, Univ Amsterdam, NXP, Synopsys, Daedalus Fdn, Solid Sands AB This paper describes an open-source simulator for cyber-physical systems called CyPhySim that is based on Ptolemy II. This simulator supports classical (Runge-Kutta) and quantized-state simulation of ordinary differential equations, modal models (hybrid systems), discrete-event models, the Functional Mockup Interface (FMI) for model-exchange and co-simulation, discrete-time (periodic) systems, and algebraic loop solvers. CyPhySim provides a graphical editor, an XML file syntax for models, and an open API for programmatic construction of models. It includes an innovation called "smooth tokens," which allow for a blend of numerical and symbolic computation, and for certain kinds of system models, dramatically reducing the computation required for simulation. C1 [Lee, Edward A.; Niknami, Mehrdad] Univ Calif Berkeley, Dept EECS, Berkeley, CA 94720 USA. [Nouidui, Thierry S.; Wetter, Michael] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Lee, EA (reprint author), Univ Calif Berkeley, Dept EECS, Berkeley, CA 94720 USA. EM eal@eecs.berkeley.edu; mniknami@eecs.berkeley.edu; tsnouidui@lbl.gov; mwetter@lbl.gov NR 27 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8079-9 PY 2015 BP 115 EP 124 PG 10 WC Computer Science, Software Engineering; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1SD UT WOS:000380432200013 ER PT J AU Mivule, K Anderson, B AF Mivule, Kato Anderson, Blake GP IEEE TI A Study of Usability-Aware Network Trace Anonymization SO 2015 SCIENCE AND INFORMATION CONFERENCE (SAI) LA English DT Proceedings Paper CT Proceedings of the Science and Information Conference (SAI) CY JUL 28-30, 2015 CL Science and Information Organization, London, ENGLAND SP Nvidia, IEEE, The Future & Emerging Technol FET at the European Comm, EUREKA, Cambridge Wireless, British Comp Soc, Digital Catapult, Springer, Media Partner for this conference HO Science and Information Organization DE Network Trace Anonymization; Usability; Differential Privacy; K-anonymity; Generalization ID PRIVACY AB The publication and sharing of network trace data is a critical to the advancement of collaborative research among various entities, both in government, private sector, and academia. However, due to the sensitive and confidential nature of the data involved, entities have to employ various anonymization techniques to meet legal requirements in compliance with confidentiality policies. Nevertheless, the very composition of network trace data makes it a challenge when applying anonymization techniques. On the other hand, basic application of microdata anonymization techniques on network traces is problematic and does not deliver the necessary data usability. Therefore, as a contribution, we point out some of the ongoing challenges in the network trace anonymization. We then suggest usability-aware anonymization heuristics by employing microdata privacy techniques while giving consideration to usability of the anonymized data. Our preliminary results show that with trade-offs, it might be possible to generate anonymized network traces with enhanced usability, on a case-by-case basis using micro-data anonymization techniques. C1 [Mivule, Kato; Anderson, Blake] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Mivule, K (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. EM kmivue@gmail.com; banderson@lanl.gov NR 38 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8547-0 PY 2015 BP 1293 EP 1304 PG 12 WC Engineering, Electrical & Electronic SC Engineering GA BF1ZT UT WOS:000380448800186 ER PT J AU Droulias, S Soukoulis, CM AF Droulias, S. Soukoulis, C. M. GP IEEE TI Photonic crystal lasers and loss compensation in metamaterials SO 2015 SPATIOTEMPORAL COMPLEXITY IN NONLINEAR OPTICS (SCNO) LA English DT Proceedings Paper CT 2015 Spatiotemporal Complexity in Nonlinear Optics (SCNO) CY AUG 31-SEP 04, 2015 CL Como, ITALY DE Photonic crystals; Laser resonators; Lasers; Metamaterials; Computational electromagnetic methods ID GAIN AB Incorporation of gain in photonic crystals and metamaterials can be utilized for different purposes. In particular, here we examine how the lasing threshold of a two dimensional photonic crystal (2D PC) containing a four-level gain medium is modified, as a result of the interplay between the group velocity and the modal reflectivity at the interface between the cavity and the exterior. The idea is demonstrated via self-consistent calculations based on a finite-difference time-domain method. The simulations are in good agreement with theoretical predictions. Using a four-level gain system, we also study light amplification of arrays of metallic split-ring resonators with a gain layer underneath. We find that, while the differential transmittance Delta T/T is positive for the gain substrate alone, Delta T/T can be negative for split-ring resonators on the top of the gain substrate, which is not expected. These simulations, which demonstrate reduction of the resonator damping, agree with pump-probe experiments and can help to design new experiments to compensate for the losses of metamaterials. C1 [Droulias, S.; Soukoulis, C. M.] FORTH, Inst Elect Struct & Laser, Iraklion 71110, Crete, Greece. [Soukoulis, C. M.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Soukoulis, C. M.] Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA. RP Droulias, S (reprint author), FORTH, Inst Elect Struct & Laser, Iraklion 71110, Crete, Greece. EM sdroulias@iesl.forth.gr NR 6 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-8061-4 PY 2015 PG 3 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF1YI UT WOS:000380445200018 ER PT J AU Kelley, BM Top, P Smith, SG Woodward, CS Min, L AF Kelley, Brian M. Top, Philip Smith, Steven G. Woodward, Carol S. Min, Liang GP IEEE TI A Federated Simulation Toolkit for Electric Power Grid and Communication Network Co-simulation SO 2015 WORKSHOP ON MODELING AND SIMULATION OF CYBER-PHYSICAL ENERGY SYSTEMS (MSCPES) LA English DT Proceedings Paper CT Workshop on Modeling and Simulation of Cyber-Physical Energy Systems (MSCPES) CY APR 13-13, 2015 CL Seattle, WA SP IEEE Ind Elect Soc, Austrian Inst Technol, Berkeley Univ Calif DE Simulation; High performance computing; Smart grids; Communication networks; Power system protection AB This paper introduces a federated simulation toolkit (FSKIT) that couples continuous time and discrete event simula- tions (DES) to perform the co-simulation of electric power grids and communication networks. A High Performance Computing (HPC) oriented power system dynamic simulator, GridDyn, was used for the electric power grid simulation. GridDyn is coupled to the open-source network simulator, ns-3, through FSKIT. FSKIT provides time control for advancing the state of federated simulators, and facilitates communication among objects in the federate. A wide-area communication-based electric transmission protection scheme is simulated with FSKIT, using the IEEE 39-bus test system. A communication network for the 39-bus system is built in ns-3, and basic protection relay logic is added to the power system model in order to perform the co-simulation. C1 [Kelley, Brian M.; Top, Philip; Smith, Steven G.; Woodward, Carol S.; Min, Liang] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Kelley, BM (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM kelley35@llnl.gov; top1@llnl.gov; smith84@llnl.gov; woodward6@llnl.gov; min2@llnl.gov NR 23 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-7358-3 PY 2015 PG 6 WC Computer Science, Interdisciplinary Applications; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1LH UT WOS:000380407000013 ER PT B AU Hosic, J Lamps, J Hart, DH AF Hosic, Jasenko Lamps, Jereme Hart, Derek H. GP IEEE TI Evolving Decision Trees to Detect Anomalies in Recurrent ICS Networks SO 2015 WORLD CONGRESS ON INDUSTRIAL CONTROL SYSTEMS SECURITY (WCICSS) LA English DT Proceedings Paper CT World Congress on Industrial Control Systems Security (WCICSS) CY DEC 14-16, 2015 CL London, ENGLAND SP Infonomics Society UK and Ireland DE Machine Learning; ICS Networks; Anomaly Detection AB Researchers have previously attempted to apply machine learning techniques to network anomaly detection problems. Due to the staggering amount of variety that can occur in normal networks, as well as the difficulty in capturing realistic data sets for supervised learning or testing, the results have often been underwhelming. These challenges are far less pronounced when considering industrial control system (ICS) networks. The recurrent nature of these networks results in less noise and more consistent patterns for a machine learning algorithm to recognize. We propose a method of evolving decision trees through genetic programming (GP) in order to detect network anomalies, such as device outages. Our approach extracts over a dozen features from network packet captures and netflows, normalizes them, and relates them in decision trees using fuzzy logic operators. We used the trees to detect three specific network events from three different points on the network across a statistically significant number of runs and achieved 100% accuracy on five of the nine experiments. When the trees attempted to detect more challenging events at points of presence further from the occurrence, the accuracy averaged to above 98%. On cases where the trees were many hops away and not enough information was available, the accuracy dipped to roughly 50%, or that of a random search. Using our method, all of the evolutionary cycles of the GP algorithm are computed alpha-priori, allowing the best resultant trees to be deployed as semi-real-time sensors with little overhead. In order for the trees to perform optimally, buffered packets and flows need to be ingested at twenty minute intervals. C1 [Hosic, Jasenko; Lamps, Jereme; Hart, Derek H.] Sandia Natl Labs, Albuquerque, NM 87123 USA. RP Hosic, J (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA. EM jhosic@sandia.gov; jlamps@sandia.gov; derhart@sandia.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-9083-2058-2 PY 2015 BP 50 EP 57 PG 8 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BF2KG UT WOS:000380475000007 ER PT S AU Adam, J Baldin, AA Chilap, V Furman, W Katovsky, K Khushvaktov, J Kumar, V Pronskikh, V Mar'in, I Solnyshkin, A Suchopar, M Tsupko-Sitnikov, V Tyutyunnikov, S Vrzalova, J Wagner, V Zavorka, L AF Adam, J. Baldin, A. A. Chilap, V. Furman, W. Katovsky, K. Khushvaktov, J. Kumar, V. Pronskikh, V. Mar'in, I. Solnyshkin, A. Suchopar, M. Tsupko-Sitnikov, V. Tyutyunnikov, S. Vrzalova, J. Wagner, V. Zavorka, L. BE Oda, K Yamauchi, T HashemiNezhad, R Font, L TI Measurement of the high energy neutron flux on the surface of the natural uranium target assembly QUINTA irradiated by deuterons of 4 and 8 GeV energy SO 26TH INTERNATIONAL CONFERENCE ON NUCLEAR TRACKS IN SOLIDS (ICNTS26) SE Physics Procedia LA English DT Proceedings Paper CT 26th International Conference on Nuclear Tracks in Solids (ICNTS26) CY SEP 15-19, 2014 CL Kobe, JAPAN SP Int Nuclear Track Soc, Kobe Univ DE Accelerator driven system (ADS); uranium target-blanket; spallation neutrons; neutron spectrum; gamma spectrometry; MCNPX ID REACTION-RATES; BEAM AB Experiments with the natural uranium target assembly "QUINTA" exposed to 4 and 8 GeV deuteron beams of the Nuclotron accelerator at the Joint Institute for Nuclear Research (Dubna) are analyzed. The reaction rates of Al-27(n,yl)Na-24, Al-27(n,y2)Na-22 and Al-27(n,y3)Be-7 reactions with effective threshold energies of 5, 27, and 119 MeV were measured at both 4 GeV and 8 GeV deuteron beam energies. The average neutron fluxes between the effective threshold energies and the effective ends of the neutron spectra (which are 800 or 1000 MeV for 4 or 8 GeV deuterons) were determined. The evidence for the intensity shift of the neutron spectra to higher neutron energies with the increase of the deuteron energy from 4 GeV to 8 GeV was found from the ratios of the average neutron fluxes. The reaction rates and the average neutron fluxes were calculated with the MCNPX 2.7 code. (C) 2015 Published by Elsevier B.V. C1 [Adam, J.; Furman, W.; Khushvaktov, J.; Pronskikh, V.; Mar'in, I.; Solnyshkin, A.; Tsupko-Sitnikov, V.; Tyutyunnikov, S.; Vrzalova, J.; Zavorka, L.] Joint Inst Nucl Res, Dubna, Russia. [Baldin, A. A.] Inst Adv Studies OMEGA, Dubna, Russia. [Chilap, V.] CPTP Atomenergomash, Moscow, Russia. [Katovsky, K.] Brno Univ Technol, Brno, Czech Republic. [Kumar, V.] GGS Indraprastha Univ, New Delhi, India. [Adam, J.; Suchopar, M.; Wagner, V.] Inst Nucl Phys, Rez, Czech Republic. [Pronskikh, V.] Fermilab Natl Accelerator Lab, Batavia, IL USA. [Suchopar, M.; Vrzalova, J.; Zavorka, L.] Czech Tech Univ, Prague, Czech Republic. RP Adam, J (reprint author), Joint Inst Nucl Res, Dubna, Russia. EM iadam@jinr.ru NR 8 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 1875-3892 J9 PHYSCS PROC PY 2015 VL 80 BP 94 EP 97 DI 10.1016/j.phpro.2015.11.101 PG 4 WC Physics, Applied; Physics, Nuclear SC Physics GA BF2RX UT WOS:000380494300018 ER PT B AU Becker, WL Braun, RJ Penev, M AF Becker, W. L. Braun, R. J. Penev, M. GP ASME TI EVALUATION OF SYNTHETIC NATURAL GAS PRODUCTION FROM RENEWABLY GENERATED HYDROGEN AND CARBON DIOXIDE SO ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2014, VOL 6A LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE) CY NOV 14-20, 2014 CL Montreal, CANADA SP ASME AB The natural gas distribution infrastructure is well developed in many countries, enabling the fuel to be transported long distances via pipelines and easily delivered throughout cities. Using. the existing pipeline to transport renewably generated synthetic natural gas (SNG) can leverage the value of the product. While the price of natural gas is near record lows in the United States, many other countries are working to develop SNG as an alternative fuel for transportation markets, especially in Europe and for island nations. This study presents an SNG plant design and evaluates its perfoimance for producing SNG by reacting renewably generated hydrogen with carbon dioxide. The carbon dioxide feedstock is assumed to be captured and scrubbed from an existing coal fired power plant at the city-gate, where the SNG plant is co-located. Historically, methanation has been a common practice for eliminating carbon monoxide and carbon dioxide in various chemical processes such as ammonia production and natural gas purification; for these processes, only small amounts (1-3% molar basis) of carbon oxides need to be converted to methane. A "bulk" methanation process is unique due to the high concentration of carbon oxides and hydrogen. In addition, the carbon dioxide is the only carbon source, and the reaction characteristics of carbon dioxide are much different than carbon monoxide. Thermodynamic and kinetic considerations of the methanation reaction are explored to model and simulate a system of reactors for the conversion of hydrogen and carbon dioxide to SNG. Multiple reactor stages are used to increase temperature control of the reactor and drain water to promote the forward direction of the methanation reaction. Heat recuperation and recovery using organic Rankine cycle units for electricity generation utilizes the heat produced from the methanation reaction. Bulk recycle is used to increase the overall reactant conversion while allowing a satisfactorily high methane content SNG product. A hydrogen membrane separates hydrogen for recycle to increase the Wobbe index of the product SNG by increasing the methane content to nearly 93% by volume. The product SNG has a Wobbe index of 47.5 MJ/m(3) which is acceptable for natural gas pipeline transport and end-use appliances in the existing infrastructure. The overall plant efficiency is shown to be 78.1% HHV and 83.2% LHV. The 2nd Law efficiency for the SNG production plant is 84.1%. C1 [Becker, W. L.] Bright Energy Storage Technol, Arvada, CO 80002 USA. [Braun, R. J.] Colorado Sch Mines, Dept Mech Engn, Golden, CO 80401 USA. [Penev, M.] Natl Renewable Energy Lab, Golden, CO USA. RP Becker, WL (reprint author), Bright Energy Storage Technol, Arvada, CO 80002 USA. NR 22 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4951-4 PY 2015 AR V06AT07A025 PG 10 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF1NN UT WOS:000380413000025 ER PT B AU Das, PK Santamaria, AD Weber, AZ AF Das, Prodip K. Santamaria, Anthony D. Weber, Adam Z. GP ASME TI ROLE OF GDL SURFACE WETTABILITY AND OPERATING CONDITIONS IN LIQUID-WATER REMOVAL FROM NSTF CATALYST LAYERS SO ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2014, VOL 6A LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE) CY NOV 14-20, 2014 CL Montreal, CANADA SP ASME C1 [Das, Prodip K.] Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. [Santamaria, Anthony D.; Weber, Adam Z.] Lawrence Berkeley Natl Lab, Environm Energy Technol Div, Berkeley, CA 94720 USA. RP Das, PK (reprint author), Newcastle Univ, Sch Mech & Syst Engn, Newcastle Upon Tyne NE1 7RU, Tyne & Wear, England. EM prodip.das@ncl.ac.uk NR 3 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4951-4 PY 2015 AR V06AT07A064 PG 2 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF1NN UT WOS:000380413000064 ER PT B AU Grudzinski, JJ Grandy, C AF Grudzinski, J. J. Grandy, C. GP ASME TI FUEL ASSEMBLY BOWING AND CORE RESTRAINT DESIGN IN FAST REACTORS SO ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2014, VOL 6B LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE) CY NOV 14-20, 2014 CL Montreal, CANADA SP ASME AB The reactivity of a fast spectrum nuclear reactor core is sensitive to changes in the fuel position. The core is formed by a hexagonal array of fuel assemblies which contain the fuel elements. The main structural components of the assemblies are thinwall hexagonal ducts. The fuel elements represent negligible stiffness in the fuel assembly compared to the ducts such that the ducts determine the location of the fuel. Thermal gradients across the fuel assembly cross sections create differential thermal expansion which causes the assemblies to bow This bowing is proportional to the power to flow ratio such that it can become an important part of the reactivity change during reactor transients such as during reactor start-up, transient overpower (TOP), and unprotected loss of flow without scram (ULOF). In addition to these short term transients, thermal and fast neutron flux gradients within the core cause the assembly ducts to swell and bow over time due to irradiation creep and swelling. These latter effects produce permanent bowing of the ducts which change the reactivity over time and more importantly affect the mechanical forces required to refuel the core as the bowing is greater that the duct-to-duct clearance. Understanding these bowing responses is important to the understanding of both the transient behavior of a fast reactor as well as the refueling loads. Through proper design of the core restraint system, the bowing response can be engineered to provide negative feedback during the above mentioned transients such that it becomes part of the inherent safety of a fast reactor: Similarly, the opposing effects of creep and swelling can be manipulated to reduce the permanent core bowing deformations. We provide a discussion of the key features of analyzing and designing a core restraint system and provide a brief survey of the past work. C1 [Grudzinski, J. J.; Grandy, C.] Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. RP Grudzinski, JJ (reprint author), Argonne Natl Lab, Nucl Engn Div, Argonne, IL 60439 USA. EM jjg@anl.gov; cgrandy@anl.gov NR 20 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4952-1 PY 2015 AR V06BT07A026 PG 9 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF1NL UT WOS:000380412800026 ER PT B AU Hawkes, GL Sterbentz, JW Maki, JT AF Hawkes, Grant L. Sterbentz, James W. Maki, John T. GP ASME TI THERMAL PREDICTIONS OF THE AGR-3/4 EXPERIMENT WITH TIME VARYING GAS GAPS SO ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2014, VOL 6B LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE) CY NOV 14-20, 2014 CL Montreal, CANADA SP ASME AB A thermal analysis was performed for the Advanced Gas Reactor test experiment (AGR-3/4) with time varying gas gaps. The experiment was irradiated at the Advanced Test Reactor (ATR) at the Idaho National Laboratory (INL). Several fuel irradiation experiments are planned for the AGR Fuel Development and Qualification Program which supports the development of the Very-High-Temperature gas-cooled Reactor (VHTR) under the Next-Generation Nuclear Plant (NGNP) project. AGR-3/4 combines two tests in a series of planned AGR experiments to test tri-structural-isotropic (TRISO)-coated, low-enriched uranium oxy-carbide fuel. The AGR-3/4 test was designed primarily to assess fission product transport through various graphite materials. The AGR-3/4 test irradiation in the ATR started in December 2011 and finished in April 2014. Forty-eight (48) TRISO fueled compacts were inserted into twelve separate capsules for the experiment (four compacts per capsule). The purpose of this analysis was to calculate the temperatures of each compact and graphite layer to obtain daily average temperatures using time (fast neutron fluence) varying gas gaps and to compare with experimentally measured thermocouple data. Previous experimental data was used for the graphite shrinkage versus fast neutron fluence. Heat rates were input from a detailed physics analysis using the Monte Carlo N-Particle (MCNP) code for each day during the experiment. Individual heat rates for each non-fuel component were input as well. A steady-state thermal analysis was performed for each daily calculation. A finite element model was created for each capsule using the commercial finite element heat transfer and stress analysis package ABAQUS. The fission and neutron gamma heat rates were calculated with the nuclear physics code MCNP. ATR outer shim control cylinders and neck shim rods along with driver fuel power and fuel depletion were incorporated into the daily physics heat rate calculations: Compact and graphite thermal conductivity were input as a function of temperature and neutron fluence with the field variable option in ABAQUS. Surface-to-surface radiation heat transfer along with conduction heat transfer through the gas mixture of helium-neon (used for temperature control) was used in these models. Model results are compared to thermocouple data taken during the experiment. C1 [Hawkes, Grant L.; Sterbentz, James W.; Maki, John T.] Idaho Natl Lab, Idaho Falls, ID 83402 USA. RP Hawkes, GL (reprint author), Idaho Natl Lab, Idaho Falls, ID 83402 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4952-1 PY 2015 AR V06BT07A023 PG 10 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF1NL UT WOS:000380412800023 ER PT B AU Ozaltun, H Medvedev, P AF Ozaltun, Hakan Medvedev, Pavel GP ASME TI EFFECTS OF THE FOIL FLATNESS ON THE STRESS-STRAIN CHARACTERISTICS OF U10MO ALLOY BASED MONOLITHIC MINI-PLATES SO ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2014, VOL 6B LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE) CY NOV 14-20, 2014 CL Montreal, CANADA SP ASME DE U10Mo; Monolithic Fuel Plate; Irradiation; Foil Flatness; Finite Element Analysis ID FUEL AB The effects of the foil flatness on stress-strain behavior of monolithic fuel mini-plates during fabrication and irradiation were studied. Monolithic plate-type fuels are a new fuel form being developed for research and test reactors to achieve higher uranium densities. This concept facilitates the use of low-enriched uranium fuel in the reactor. These fuel elements are comprised of a high density, low enrichment, U-Mo alloy based fuel foil encapsulated in a cladding material made of Aluminum. To evaluate the effects of the foil flatness on the stress-strain behavior of the plates during fabrication, irradiation and shutdown stages, a representative plate from RERTR-12 experiments (Plate L1P756) was considered. Both fabrication and irradiation processes of the plate were simulated by using actual irradiation parameters. The simulations were repeated for various foil curvatures to observe the effects of the foil flatness on the peak stress and strain magnitudes of the fuel elements. Results of fabrication simulations revealed that the flatness of the foil does not have a considerable impact on the post fabrication stress-strain fields. Furthermore, the irradiation simulations indicated that any post-fabrication stresses in the foil would be relieved relatively fast in the reactor. While, the perfectly flat foil provided the slightly better mechanical performance, overall difference between the flat-foil case and curved-foil case was not significant. Even though the peak stresses are less affected, the foil curvature has several,implications on the strain magnitudes in the cladding. It was observed that with an increasing foil curvature, there is a slight increase in the cladding strains. C1 [Ozaltun, Hakan; Medvedev, Pavel] Idaho Natl Lab, Idaho Falls, ID 83402 USA. RP Ozaltun, H (reprint author), Idaho Natl Lab, Idaho Falls, ID 83402 USA. EM Hakan.Ozaltun@inl.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4952-1 PY 2015 AR V06BT07A021 PG 15 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF1NL UT WOS:000380412800021 ER PT B AU Mohanty, S Iverson, W Soppet, WK Majumdar, S Natesan, K AF Mohanty, Subhasish Iverson, William Soppet, William K. Majumdar, Saurindranath Natesan, Krishnamurti BE Xu, SX Hojo, K Cipolla, RC TI A Bayesian-Probabilistic Framework for Real-time Fatigue Usage Factor Monitoring of Nuclear Reactor Components SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 1A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Real-time estimation of the fatigue usage factor of nuclear reactor components are helpful tools for on-demand assessment of component structural integrity. Real-time measurements of field variables, such as stress and strain, along with the use of historic/available stress/strain versus fatigue life data and a Bayesian-probabilistic framework can not only help to estimate the fatigue usage factor of reactor components in real time but also can help to estimate the associated confidence bounds. In this paper, a Gaussian Process based Bayesian-probabilistic framework is proposed for real-time estimation of mean fatigue usages factor and associated probabilistic bounds. The preliminary proof of concept was demonstrated through fatigue experiments with 316 stainless steel specimens under different conditions: a) under 300 degrees C and pressurized water reactor (PWR) water chemistry, and b) room temperature and in-air condition. At present the proposed probabilistic monitoring approach is not part of any code requirements, however the proposed framework is output of a futuristic basic research work, which requires more advancement. Also the results discussed in the paper are part of very preliminary basic research and requires advance validation such as under realistic nuclear reactor conditions. C1 [Mohanty, Subhasish; Soppet, William K.; Majumdar, Saurindranath; Natesan, Krishnamurti] Argonne Natl Lab, Nuclear Engn Div, Argonne, IL 60439 USA. [Iverson, William] Univ Illinois, Champaign, IL 61820 USA. RP Mohanty, S (reprint author), Argonne Natl Lab, Nuclear Engn Div, Argonne, IL 60439 USA. EM smohanty@anl.gov NR 22 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5692-5 PY 2015 AR V01AT01A043 PG 10 WC Engineering, Mechanical SC Engineering GA BF1BP UT WOS:000380290800043 ER PT B AU Mohanty, S Soppet, WK Majumdar, S Natesan, K AF Mohanty, Subhasish Soppet, William K. Majumdar, Saurindranath Natesan, Krishnamurti BE Xu, SX Hojo, K Cipolla, RC TI Effect of Pressurized Water Reactor Environment on Material Parameters of 316 Stainless Steel: A Cyclic Plasticity Based Evolutionary Material Modeling Approach SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 1A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID SIMULATION; FATIGUE; DAMAGE AB At present, the fatigue life of nuclear reactor components is estimated based on empirical approaches, such as stress/strain versus life (S similar to N) curves and Coffin-Manson type empirical relations. In most cases, the S similar to N curves are generated from uniaxial fatigue test data, which may not truly represent the multiaxial stress state at the component level. Also, the S similar to N curves are based on the final life of the specimen, which may not accurately represent the mechanistic time-dependent evolution of material behavior. These discrepancies lead to large uncertainties in fatigue life estimations. We propose a modeling approach based on evolutionary cyclic plasticity that can be used for developing finite element models of nuclear reactor components subjected to multi-axial stress states. These models can be used for more accurately predicting the stress-strain evolution over time in reactor components and, in turn, fatigue life. The model parameters were estimated for 316 stainless steel material, which are widely used in U.S. nuclear reactors. The model parameters were estimated for different test conditions to understand their evolution over time and their sensitivity to particular test conditions, such as the pressurized water reactor coolant condition. C1 [Mohanty, Subhasish; Soppet, William K.; Majumdar, Saurindranath; Natesan, Krishnamurti] Argonne Natl Lab, Lemont, IL 60439 USA. RP Mohanty, S (reprint author), Argonne Natl Lab, Lemont, IL 60439 USA. EM smohanty@anl.gov; wk.soppet@anl.gov; majumdar@anl.gov; natesan@anl.gov NR 18 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5692-5 PY 2015 AR V01AT01A039 PG 10 WC Engineering, Mechanical SC Engineering GA BF1BP UT WOS:000380290800039 ER PT B AU Stevens, GL Kirk, MT Dickson, T AF Stevens, Gary L. Kirk, Mark T. Dickson, Terry BE Xu, SX Hojo, K Cipolla, RC TI PROBABILISTIC FRACTURE MECHANICS EVALUATIONS THAT CONSIDER NOZZLES IN THE EXTENDED BELTLINE REGION OF REACTOR PRESSURE VESSELS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 1B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB For many years, ASME Section XI committees have discussed the assessment of nozzle penetrations in various flaw evaluations for reactor pressure vessels (RPVs). As summarized in Reference [1], linear elastic fracture mechanics (LEFM) solutions for nozzle penetrations have been in use since the 1970s. In 2013, one of these solutions was adopted into ASME Code, Section XI, Nonmandatory Appendix G (ASME App. G) [2] for use in developing RPV pressure temperature (P-T) operating limits. That change to ASME App. G was based on compilation of past work [3] and additional evaluations of fracture driving force [4][5]. To establish the P-T limits on RPV operation, consideration should be given to both the RPV shell material with the highest reference temperature as well as regions of the RPV (e.g., nozzles, flange) that contain structural discontinuities. In October 2014, the U.S. Nuclear Regulatory Commission (NRC) highlighted these requirements in Regulatory Issue Summary (RIS) 2014-11 [6]. Probabilistic fracture mechanics (PFM) analyses performed to support pressurized thermal shock (PTS) evaluations using the Fracture Analysis Vessels Oak Ridge (FAVOR) computer code [7] currently evaluate only the RPV beltline shell regions. These evaluations are based on the assumption that the PFM results are controlled by the higher embrittlement characteristic of the shell region rather than the stress concentration characteristic of the nozzle, which does not experience nearly the embrittlement of the shell due to its greater distance from the core. To evaluate this assumption, the NRC and the Oak Ridge National Laboratory (ORNL) performed PFM analyses to quantify the effect of these stress concentrations on the results of the RPV PFM analyses. This paper summarizes the methods and evaluates the results of these analyses. C1 [Stevens, Gary L.; Kirk, Mark T.] US Nucl Regulatory Commiss, Rockville, MD 20852 USA. [Dickson, Terry] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Stevens, GL (reprint author), US Nucl Regulatory Commiss, Rockville, MD 20852 USA. EM gary.stevens@nrc.gov; mark.kirk@nrc.gov; dicksontl@ornl.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5693-2 PY 2015 AR V01BT01A013 PG 10 WC Engineering, Mechanical SC Engineering GA BF1BN UT WOS:000380290600013 ER PT B AU Barrett, K Teague, M Moore, G Woolum, C Archibald, K AF Barrett, Kristine Teague, Michael Moore, Glenn Woolum, Connor Archibald, Kip BE Kerr, M Rudland, D TI Fabrication, Welding, and Inspection Techniques in Preparation for In-Reactor Testing of Accident Tolerant Fuels SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB After the Fukushima events in 2011, DOE-NE in collaboration with nuclear industry shifted R&D emphasis to accident performance of LWR fuels under extended loss of active cooling and steam exposure. DOE-NE has created a roadmap for the "Development of Light Water Reactor Fuels with Enhanced Accident Tolerance." The mission of the Accident Tolerant Fuel (ATF) Roadmap is to develop the next generation of LWR fuels with improved performance, reliability, and safety characteristics during normal operations and accident conditions and with reduced waste generation. The ultimate goal of the ATF roadmap is to support the insertion of lead fuel rods (LFRs) or lead fuel assemblies (LFAs) of an Accident Tolerant Fuel into a commercial LWR within 10 years (i.e., by the end of FY-2022). As a step toward this goal, an irradiation test series has been developed to assess the performance of proposed ATF concepts under normal LWR operating conditions. Data generated by this test program will be used to establish the feasibility of certain aspects of proposed ATF concepts, as well as provide information to support screening among concepts; as such, it is an integral part of Phase I: Feasibility Assessment and Down Selection outlined in the ATF Roadmap. This irradiation test series is planned to be performed as a series of drop-in capsule tests to be irradiated in the Advanced Test Reactor (ATR) operated by the Idaho National Laboratory (INL), and it has been designated as the ATF-1 test series. Current fission reactors use zirconium-based fuel cladding because of its extremely low macroscopic thermal neutron absorption cross-section, good high temperature strength, and decent corrosion resistance. However, advanced, innovative materials may provide these same benefits while increasing reactor safety margin, core power density, and fuel utilization. These advanced fuel cladding systems will allow revolutionary cladding performance and enhanced fuel mechanical designs, however, challenges exist in design, analysis and fabrication of innovative, never before tested, fuel cladding systems for in reactor testing. This paper highlights the challenges associated with design, fabrication and welding, and inspection of innovative materials and actions taken to address those challenges in preparation for the Phase I ATR irradiation testing. The lessons learned from Phase I of this experiment can be used to guide researchers for design and analysis of future in-reactor testing of advanced fuel cladding systems. C1 [Barrett, Kristine; Teague, Michael; Moore, Glenn; Woolum, Connor; Archibald, Kip] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Barrett, K (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. NR 5 TC 0 Z9 0 U1 2 U2 2 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5699-4 PY 2015 AR V06AT06A002 PG 9 WC Engineering, Mechanical SC Engineering GA BF1EJ UT WOS:000380382700002 ER PT B AU Chao, YJ Lam, PS AF Chao, Yuh J. Lam, Poh-Sang BE Kerr, M Rudland, D TI STRESS INTENSITY FACTORS OF A THREE-POINT BEND SPECIMEN UNDER DYNAMIC LOADING SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID IMAGE CORRELATION; FRACTURE PARAMETERS; CRACK-TIP; DEFORMATIONS; PHOTOGRAPHY; BEHAVIOR; FIELDS AB Stress intensity factors for a three-point bend specimen under dynamic loadings are obtained through the displacement fields using digital image correlation (DIC) method. The dynamic loads are generated with a drop weight to impact the specimen while the crack remains stationary in this study. It shows that the stress intensity factor oscillates as a function of time. The experimental details and the comparison with theoretical solutions are presented. C1 [Chao, Yuh J.] Tianjin Univ, Coll Mat Sci & Engn, Tianjin, Peoples R China. [Chao, Yuh J.] Univ South Carolina, Dept Mech Engn, Columbia, SC 29208 USA. [Lam, Poh-Sang] Savannah River Natl Lab, Mat Sci & Technol, Aiken, SC 29808 USA. RP Chao, YJ (reprint author), Tianjin Univ, Coll Mat Sci & Engn, Tianjin, Peoples R China. EM chao@sc.edu; ps.lam@srnl.doe.gov NR 30 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5699-4 PY 2015 AR V06AT06A028 PG 8 WC Engineering, Mechanical SC Engineering GA BF1EJ UT WOS:000380382700028 ER PT B AU Chen, J Chen, GQ Yu, XH Feng, ZL Crooker, P AF Chen, Jian Chen, Gaoqiang Yu, Xinghua Feng, Zhili Crooker, Paul BE Kerr, M Rudland, D TI EFFECT OF STRAIN HARDENING CONSTITUTIVE RELATIONS ON WELD RESIDUAL STRESS SIMULATION OF DISSIMILAR METAL WELD SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Weld residual stress (WRS) in dissimilar metal welds (DMWs) has been identified as an important driver for primary water stress corrosion cracking, which is observed in nuclear power plant safety-related components. In this work, a newly developed dynamic strain hardening rule is implemented in finite element (FE) thermal-mechanical model to simulate the residual stress distribution in a dissimilar metal weld studied in a recent NRC/EPRI Round Robin study. This new dynamic strain hardening constitutive rule takes into account the effect of dynamic recovery and recrystallization at elevated temperatures on the strain hardening behavior during welding. Weld residual stresses calculated using the new dynamic strain hardening rule are compared to those with the conventional strain hardening ones (isotropic and kinematic), as well as the experimental measurement data. The new dynamic strain hardening rule results in improvements in WRS prediction. C1 [Chen, Jian; Chen, Gaoqiang; Yu, Xinghua; Feng, Zhili] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Chen, Gaoqiang] Tsinghua Univ, Beijing, Peoples R China. [Crooker, Paul] Elect Power Res Inst, Palo Alto, CA USA. RP Chen, J (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA. EM chenj2@ornl.gov; gaoqiang.chen@gmail.com; yux1@ornl.gov; fengz@ornl.gov; perooker@epri.com NR 14 TC 0 Z9 0 U1 2 U2 2 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5699-4 PY 2015 AR V06AT06A065 PG 5 WC Engineering, Mechanical SC Engineering GA BF1EJ UT WOS:000380382700065 ER PT B AU Korinko, PS AF Korinko, Paul S. BE Kerr, M Rudland, D TI DEVELOPMENT OF LASER ENGINEERED NET SHAPE (LENS) ADDITIVE MANUFACTURING FOR REPAIR SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID STAINLESS-STEEL AB Laser Engineered Net Shape processing was evaluated as a means to repair scratched gas sample bottles and mis-machined test bases. Defects to be repaired were intentionally introduced. These defects simulated scratches and holes that had been either over bored or misaligned. These parts were repaired using LENS and then tested in the baseline, as damaged, and hydrogen charged conditions. The effect of LENS repair was not detrimental to the properties of the components. Further development work and implementation of the process is recommended. C1 [Korinko, Paul S.] Savannah River Natl Lab, Aiken, SC 29808 USA. RP Korinko, PS (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. NR 14 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5699-4 PY 2015 AR V06AT06A003 PG 8 WC Engineering, Mechanical SC Engineering GA BF1EJ UT WOS:000380382700003 ER PT B AU Kusnick, J Kirk, M Bass, BR Williams, P Dickson, T AF Kusnick, Joshua Kirk, Mark Bass, B. Richard Williams, Paul Dickson, Terry BE Kerr, M Rudland, D TI EFFECT OF CLADDING RESIDUAL STRESS MODELING TECHNIQUE ON SHALLOW FLAW STRESS INTENSITY FACTOR IN A REACTOR PRESSURE VESSEL SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Prior probabilistic fracture mechanics (PFM) analysis of reactor pressure vessels (RPVs) subjected to normal cool-down transients has shown that shallow, internal surface-breaking flaws dominate the RPV failure probability. This outcome is caused by the additional crack driving force generated near the clad interface due to the mismatch in coefficient of thermal expansion (CTE) between the cladding and base material, which elevates the thermally induced stresses. The CTE contribution decreases rapidly away from the cladding, making this effect negligible for deeper flaws. The probabilistic fracture mechanics code FAVOR (Fracture Analysis of Vessels, Oak Ridge) uses a stress-free temperature model to account for residual stresses in the RPV wall due to the cladding application process. This paper uses finite element analysis to compare the stresses and stress intensity factor during a cool down transient for two cases: (1) the existing stress-free temperature model adopted for use in FAVOR, and (2) directly applied RPV residual stresses obtained from empirical measurements made at room temperature. It was found that for a linear elastic fracture mechanics analysis, the application of measured room temperature stresses resulted in a 10% decrease in the peak stress intensity factor during a cool-down transient as compared to the stress-free temperature model. C1 [Kusnick, Joshua; Kirk, Mark] US Nucl Regulatory Commiss, Rockville, MD 20852 USA. [Bass, B. Richard; Williams, Paul; Dickson, Terry] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Kusnick, J (reprint author), US Nucl Regulatory Commiss, Rockville, MD 20852 USA. NR 6 TC 0 Z9 0 U1 2 U2 2 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5699-4 PY 2015 AR V06AT06A054 PG 7 WC Engineering, Mechanical SC Engineering GA BF1EJ UT WOS:000380382700054 ER PT B AU Lam, PS Sindelar, RL AF Lam, Poh-Sang Sindelar, Robert L. BE Kerr, M Rudland, D TI DEVELOPMENT OF FLAW ACCEPTANCE CRITERIA FOR AGING MANAGEMENT OF SPENT NUCLEAR FUEL MULTIPLE-PURPOSE CANISTERS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID STAINLESS-STEEL CANISTER; STRESS-CORROSION CRACKING; CONCRETE CASK STORAGE AB A typical multipurpose canister (MPC) is made of austenitic stainless steel and is loaded with spent nuclear fuel assemblies. The canister may be subject to service-induced degradation when it is exposed to aggressive atmospheric environments during a possibly long-term storage period if the permanent repository is yet to be identified and readied. Because heat treatment for stress relief is not required for the construction of an MPC, stress corrosion cracking may be initiated on the canister surface in the welds or in the heat affected zone. An acceptance criteria methodology is being developed for flaw disposition should the crack-like defects be detected by periodic Inservice Inspection. The first-order instability flaw sizes has been determined with bounding flaw configurations, that is, through-wall axial or circumferential cracks, and part-through-wall long axial flaw or 360 circumferential crack. The procedure recommended by the American Petroleum Institute (API) 579 Fitness-for-Service code (Second Edition) is used to estimate the instability crack length or depth by implementing the failure assessment diagram (FAD) methodology. The welding residual stresses are mostly unknown and are therefore estimated with the API 579 procedure. It is demonstrated in this paper that the residual stress has significant impact on the instability length or depth of the crack. The findings will limit the applicability of the flaw tolerance obtained from limit load approach where residual stress is ignored and only ligament yielding is considered. C1 [Lam, Poh-Sang; Sindelar, Robert L.] Savannah River Natl Lab, Mat Sci & Technol, Aiken, SC 29808 USA. RP Lam, PS (reprint author), Savannah River Natl Lab, Mat Sci & Technol, Aiken, SC 29808 USA. EM ps.lam@srnl.doe.gov; robert.sindelar@srnl.doe.gov NR 22 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5699-4 PY 2015 AR V06AT06A027 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EJ UT WOS:000380382700027 ER PT B AU Mohanty, S Soppet, WK Majumdar, S Natesan, K AF Mohanty, Subhasish Soppet, William K. Majumdar, Saurindranath Natesan, Krishnamurti BE Kerr, M Rudland, D TI Pressurized Water Reactor Environment Effect on 316 Stainless Steel Stress Hardening/Softening: An Experimental Study SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6A LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID FATIGUE LIFE PREDICTION; LOW-CYCLE FATIGUE AB In USA there are approximately 100 operating light water reactors (LWR) consisting fleet of both pressurized water reactors (PWR) and boiling water reactors (BWR). Most of these reactors were built before 1970 and the design lives of most of these reactors are 40 years. It is expected that by 2030, even those reactors that have received 20 year life extension license from the US nuclear regulatory commission (NRC) will begin to reach the end of their licensed periods of operation. For economical reason it is be beneficial to extend the license beyond 60 to perhaps 80 years that would enable existing plants to continue providing safe, clean and economic electricity without significant green house gas emissions. However, environmental fatigue is one of the major aging related issues for these reactors, and may create hurdles in long term sustainability of these reactors. To address some of the environmental fatigue related issues, Argonne National Laboratory (ANL) with the sponsorship of Department of Energy's Light Water Reactor Sustainability (LWRS) program trying to develop mechanistic approach for more accurate life estimation of LWR components. In this context ANL conducted many fatigue experiments under different test and environment conditions on 316 stainless steel (316SS) material that is or similar grade steels are widely used in US reactors. Contrary to the conventional S similar to N curve based empirical fatigue life estimation approach, the aim of the present DOE sponsored work is to understand material ageing more mechanistically (e.g. time dependent hardening and softening) under different test and environmental conditions. Better mechanistic understanding will help to develop computer based advanced modeling tools to better extrapolate stress-strain evolution of reactor component under multi-axial stress states and hence to help predicting their fatigue life more accurately. In this paper (part-I) the fatigue experiments under different test and environment conditions and related stress-strain results for 316 SS are discussed. In another paper (part-II) the related evolutionary cyclic plasticity material modeling techniques and results are discussed. C1 [Mohanty, Subhasish; Soppet, William K.; Majumdar, Saurindranath; Natesan, Krishnamurti] Argonne Natl Lab, Lemont, IL 60439 USA. RP Mohanty, S (reprint author), Argonne Natl Lab, Lemont, IL 60439 USA. EM smohanty@anl.gov; wk.soppet@anl.gov; majumdar@anl.gov; natesan@anl.gov NR 14 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5699-4 PY 2015 AR V06AT06A038 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EJ UT WOS:000380382700038 ER PT B AU Balch, DK San Marchi, C AF Balch, Dorian K. San Marchi, Chris BE Kerr, M Rudland, D TI EFFECT OF HYDROGEN ON TENSILE STRENGTH AND DUCTILITY OF MULTI-PASS 304L/308L AUSTENITIC STAINLESS STEEL WELDS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID ENVIRONMENT EMBRITTLEMENT AB Austenitic stainless steels such as 304L are frequently used for hydrogen service applications due to their excellent resistance to hydrogen embrittlement. However, welds in austenitic stainless steels often contain microstructures that are more susceptible to the presence of hydrogen. This study examines the tensile strength and ductility of a multi-pass gas tungsten arc weld made on 304L cross-rolled plate using 308L weld filler wire. Sub-sized tensile specimens were used to ensure the entire gage section of each tensile specimen consisted of weld metal. Specimens were extracted in both axial and transverse orientations, and at three different depths within the weld (root, center, and top). Yield strength decreased and ductility increased moving from the root to the top of the weld. A subset of specimens was precharged with hydrogen at 138 MPa (20,000 psi) and 300 degrees C prior to testing, resulting in a uniform hydrogen concentration of 7700 appm. The presence of hydrogen resulted in a slight increase in yield and tensile strength and a roughly 50% decrease in tensile elongation and reduction in area, compared to the hydrogen-free properties. C1 [Balch, Dorian K.; San Marchi, Chris] Sandia Natl Labs, Livermore, CA 94551 USA. RP Balch, DK (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. NR 24 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR UNSP V06BT06A019 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600019 ER PT B AU Bukowski, JV Gross, RE Goble, WM Harris, SP AF Bukowski, Julia V. Gross, Robert E. Goble, William M. Harris, Stephen P. BE Kerr, M Rudland, D TI EFFECTS OF SEAT WIDTH ON DEVELOPMENT OF ADHESIONS IN STAINLESS STEEL TRIM SPRING OPERATED PRESSURE RELIEF VALVES SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Previous research has shown that stainless steel (SS) adhesions form in about half of new SS trim spring operated pressure relief valves (SOPRV). These adhesions require an additional force (beyond the spring force) to be applied by the process fluid to the disc in order for the valve to lift. This additional force may cause the SOPRV to fail its proof test (FPT) or even to fail to open (FTO) in the presence of excess process pressure. This paper expands on the previous findings to show how seat width relates statistically to whether or not these SS adhesions form and, if they do, whether or not they are of sufficient size to cause FPT or FTO. The findings show it is statistically significant that SOPRV in the study population with seat widths greater than 0.030 inches (in.) formed adhesions more often than SOPRV with seat widths less than or equal to 0.030 in. Furthermore, for this population it is statistically significant that all FPT and FTO occurred on SOPRV with seat widths greater than or equal to 0.030 in. The ramifications of these findings to the safety performance of SS trim SOPRV are discussed. C1 [Bukowski, Julia V.] Villanova Univ, Villanova, PA 19085 USA. [Gross, Robert E.] Savannah River Nucl Solut, Aiken, SC USA. [Goble, William M.] Exida LLC, Sellersville, PA USA. [Harris, Stephen P.] Savannah River Natl Lab, Aiken, SC USA. RP Bukowski, JV (reprint author), Villanova Univ, Villanova, PA 19085 USA. EM julia.bukowski@villanova.edu; robert.gross@srs.gov; wgoble@exida.com; stephen.harris@srnl.doe.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A056 PG 7 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600056 ER PT B AU Iijima, T Itoga, H An, B Marchi, CS Somerday, BP AF Iijima, Takashi Itoga, Hisatake An, Bai Marchi, Chris San Somerday, Brian P. BE Kerr, M Rudland, D TI FRACTURE PROPERTIES OF A CR-MO FERRITIC STEEL IN HIGH-PRESSURE GASEOUS HYDROGEN SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Recently, the measurement of threshold stress intensity factors for various low alloy ferritic steels was performed in high-pressure hydrogen gas, and it was revealed that the threshold for subcritical crack extension under rising displacement was lower than that for crack arrest under constant displacement. We previously examined the threshold for subcritical crack extension of ASME SA-372 Grade J ferritic steels using an unloading elastic compliance method in gaseous hydrogen at pressure up to 115 MPa, and reported that the cracking thresholds under the unloading elastic compliance method are consistent with the cracking threshold under the continuously rising displacement method. In the current study, the threshold stress intensity factor of JIS SCM 435 steel with yield strength of 700 MPa was measured using the unloading compliance method in high-pressure hydrogen gas. The roles of environmental (gas pressure) and testing (displacement rate) parameters were evaluated. The hydrogen gas pressure ranged from 10 to 115 MPa, and the displacement rate was varied between 2x10(-3) and 2x10(-5) mm/s. The measured values of the threshold for subcritical crack extension, K-JIC,K-H, decreased with either increasing hydrogen gas pressure or decreasing displacement rate. When the hydrogen pressure was 115 MPa, however, the cracking threshold showed a modest dependence on displacement rate, varying from 63 to 43 MPa m(1/2). These results demonstrate that the measurement conditions, such as the hydrogen pressure and the displacement rate, affect values of the subcritical cracking threshold under rising displacement. C1 [Iijima, Takashi; An, Bai] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan. [Itoga, Hisatake] Kyushu Univ, Fukuoka, Japan. [Marchi, Chris San; Somerday, Brian P.] Sandia Natl Labs, Livermore, CA USA. RP Iijima, T (reprint author), Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan. NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A012 PG 7 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600012 ER PT B AU Lillo, TM Wright, RN AF Lillo, Thomas M. Wright, Richard N. BE Kerr, M Rudland, D TI Microstructural Characterization of Alloy 617 Crept into the Tertiary Regime SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID ENERGY DISLOCATION-STRUCTURES; HIGH-TEMPERATURE; VOID GROWTH; CREEP AB The dislocation structure and area fraction of creep voids in Alloy 617 were characterized following creep tests interrupted at total creep strains ranging from 2-20%. A range of creep temperatures (750-1000 degrees C) and initial creep stresses (10-145 MPa) produced creep test durations ranging from 1 to 5800 hours. Image analysis of optical photomicrographs on longitudinal sections of the gage length was used to document the fraction of creep porosity as a function of creep parameters. In interrupted creep tests performed at 750 degrees C, minimal levels of creep porosity were found even in samples crept to 20% total creep strain. At 1000 degrees C, creep porosity was negligible below total creep strains of 10% and increased thereafter with increasing total creep strain. Also, creep porosity increased with decreasing creep stress for a given total creep strain. TEM performed on the gage sections did not reveal significant creep void formation on grain boundaries or in the grains at the sub micron level. However, dislocation boundaries exhibited extensive dislocation rearrangement and dislocation -dislocation reactions. It was concluded that the onset of tertiary creep did not result from creep void formation and more likely arose due to the formation of low energy dislocation substructures. C1 [Lillo, Thomas M.; Wright, Richard N.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Lillo, TM (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. NR 13 TC 0 Z9 0 U1 2 U2 3 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A057 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600057 ER PT B AU Marchi, CS Zimmerman, JA Tang, X Kernion, SJ Thurmer, K Nibur, KA AF Marchi, Chris San Zimmerman, Jonathan A. Tang, X. Kernion, Samuel J. Thurmer, Konrad Nibur, Kevin A. BE Kerr, M Rudland, D TI FATIGUE LIFE OF AUSTENITIC STAINLESS STEEL IN HYDROGEN ENVIRONMENTS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID LOW-TEMPERATURES; EMBRITTLEMENT AB Gas-handling components for high-pressure gaseous hydrogen (such as in the fuel system of fuel cell electric vehicles) are manufactured almost exclusively from austenitic stainless steels. Relatively few studies, however, have evaluated the fatigue life of this class of steels in hydrogen environments, especially at low temperature. Low temperature is important for two reasons: (1) austenitic stainless steels show an apparent minimum in tensile ductility at temperature near 220K when exposed to hydrogen environments; and (2) the service temperature range for the automotive industry is generally consider to be 233K to 358K (-40 degrees C to +85 degrees C). While the temperature of maximum hydrogen embrittlement from tensile tests is very near the minimum of the service temperature range, it remains unclear if the same trend applies to fatigue life properties. In this paper, we evaluate the effect of hydrogen on fatigue life of strain-hardened Type 316L. The tested alloy features a relatively high nickel content of 12 wt% and high yield strength of 590 MPa. Additionally, reduction of cost and weight of hydrogen-handling components is necessary to enhance the competitiveness of fuel cell vehicle technologies. Cost reductions can be achieved by considering alloys with lower nickel content, while higher strength materials enable lower weight. Simple estimates of cost and weight reductions that can be realized are discussed. C1 [Marchi, Chris San; Zimmerman, Jonathan A.; Thurmer, Konrad] Sandia Natl Labs, Livermore, CA 94550 USA. [Tang, X.] Swagelok Co, Solon, OH USA. [Kernion, Samuel J.] Carpenter Technol Corp, Reading, PA USA. [Nibur, Kevin A.] Hy Performance Mat Testing LLC, Bend, OR USA. RP Marchi, CS (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A015 PG 7 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600015 ER PT B AU Reynolds, TB Brown, AA Beghini, LL Kostka, TD San Marchi, CW AF Reynolds, Thomas B. Brown, Arthur A. Beghini, Lauren L. Kostka, Timothy D. San Marchi, Chris W. BE Kerr, M Rudland, D TI DEVELOPMENT OF RESIDUAL STRESS SIMULATION AND EXPERIMENTAL MEASUREMENT TOOLS FOR STAINLESS STEEL PRESSURE VESSELS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID RECRYSTALLIZATION AB In forged, welded, and machined components, residual stresses can form during the fabrication process. These residual stresses can significantly alter the fatigue and fracture properties compared to an equivalent component containing no residual stress. When performing lifetime assessment, the residual stress state must be incorporated into the analysis to most accurately reflect the initial condition of the component. The focus of this work is to present the computational and experimental tools that we are developing to predict and measure the residual stresses in stainless steel for use in pressure vessels. The contour method was used to measure the residual stress in stainless steel forgings. These results are compared to the residual stresses predicted using coupled thermo-mechanical simulations that track the evolution of microstructure, strength and residual stress during processing. C1 [Reynolds, Thomas B.; Brown, Arthur A.; Beghini, Lauren L.; Kostka, Timothy D.; San Marchi, Chris W.] Sandia Natl Labs, Livermore, CA 94551 USA. RP Reynolds, TB (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A067 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600067 ER PT B AU Ronevich, JA Somerday, BP Marchi, CWS Balch, DK AF Ronevich, Joseph A. Somerday, Brian P. Marchi, Chris W. San Balch, Dorian K. BE Kerr, M Rudland, D TI FRACTURE THRESHOLD MEASUREMENTS OF HYDROGEN PRECHARGED STAINLESS STEEL WELD FUSION ZONES AND HEAT AFFECTED ZONES SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID ASSISTED CRACK-PROPAGATION AB Austenitic stainless steels are used in hydrogen environments because of their generally accepted resistance to hydrogen embrittlement; however, hydrogen-assisted cracking can occur depending on the microstructures or composition of the stainless steel. One area that has not been well researched is welds and in particular heat affected zones. The goal of this work was to measure the subcritical cracking susceptibility of hydrogen precharged gas tungsten arc (GTA) welds in forged stainless steels (21Cr-6Ni-9Mn and 304L). Welds were fabricated using 308L filler metal to form 21-6-9/308L and 304L/308L weld rings, and subsequently three-point bend specimens were extracted from the fusion zone and heat affected zone and precharged in high-pressure hydrogen gas. Crack growth resistance curves were measured in air for the hydrogen precharged fusion zones and heat affected zones under rising-displacement loading, revealing significant susceptibility to subcritical cracking. Fracture thresholds of 304L/308L welds were lower than 21-6-9/308L welds which was attributed to higher ferrite fractions in 304L/308L since this phase governed the crack path. Fracture thresholds for the heat affected zone were greater than the fusion zone in 21-6-9/308L which is likely due to negligible ferrite in the heat affected zone. Modifications to the weld joint geometry through use of a single-J design were implemented to allow consistent testing of the heat affected zones by propagating the crack parallel to the fusion zone boundary. Despite low hydrogen diffusivity in the austenitic stainless steels, effects of displacement rates were observed and a critical rate was defined to yield lower-bound fracture thresholds. C1 [Ronevich, Joseph A.; Somerday, Brian P.; Marchi, Chris W. San; Balch, Dorian K.] Sandia Natl Labs, Livermore, CA 94550 USA. RP Ronevich, JA (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM jaronev@sandia.gov; bpsomer@sandia.gov; cwsanma@sandia.gov; dkbalch@sandia.gov NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A017 PG 9 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600017 ER PT B AU Rudland, D Harrington, C Dingreville, R AF Rudland, D. Harrington, C. Dingreville, R. BE Kerr, M Rudland, D TI Development of the Extremely Low Probability of Rupture (xLPR) Version 2.0 Code SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID CRACKS AB NRC Standard Review Plan (SRP) 3.6.3 describes Leak Before -Break (LBB) assessment procedures that can be used to assess compliance with the 10CFR50 Appendix A, GDC-4 requirement that primary system pressure piping exhibit an extremely low probability of rupture. SRP 3.6.3 does not allow for assessment of piping systems with active degradation mechanisms, such as Primary Water Stress Corrosion Cracking (PWSCC) which is currently occurring in systems that have been granted LBB approvals. US NRC staff, working cooperatively with the Electric Power Research Institute through a memorandum of understanding, conducted a multi-year project that focused on the development of a viable method and approach to address the effects of PWSCC in primary piping systems approved for LBB. This project, called eXtremely Low Probability of Rupture (xLPR), defined the requirements necessary for a modular-based probabilistic fracture mechanics assessment tool to directly assess compliance with the regulations. As reported in previous technical papers, the first version of the xLPR code was developed as part of a pilot study, which leveraged existing fracture mechanics based models and software coupled to both a commercial and open source code framework to determine the framework and architecture requirements appropriate for building a modular-based code with this complexity. Using the lessons learned from the pilot study, the production version of this code, designated as Version 2.0, focuses on those primary piping systems previously approved for LBB. In this version, the appropriate fracture mechanics-based models are employed to model the physical cracking behavior and a variety of computational options are provided to characterize, categorize and propagate problem uncertainties. This paper examines the xLPR Version 2.0 model by presenting a brief overview of the xLPR scope, the code structure, computational framework and fracture mechanics based models. As a demonstration of the xLPR Version 2.0 capabilities, an example is presented that focuses on PWSCC in large-bore piping systems. This example exercises some functionalities of the xLPR code to demonstrate its application to assess compliance with 10CFR50 Appendix A, GDC-4. This paper concludes with a brief discussion on the path forward and plans for the control and maintenance of the xLPR code. C1 [Rudland, D.] US Nucl Regulatory Commiss, Off Nucl Regulatory Res, Washington, DC 20555 USA. [Harrington, C.] Elect Power Res Inst, Dallas, TX USA. [Dingreville, R.] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Rudland, D (reprint author), US Nucl Regulatory Commiss, Off Nucl Regulatory Res, Washington, DC 20555 USA. EM david.rudland@nrc.gov NR 37 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A050 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600050 ER PT B AU Somerday, B Bortot, P Felbaum, J AF Somerday, Brian Bortot, Paolo Felbaum, John BE Kerr, M Rudland, D TI OPTIMIZING MEASUREMENT OF FATIGUE CRACK GROWTH RELATIONSHIPS FOR CR-MO PRESSURE VESSEL STEELS IN HYDROGEN GAS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The objective of this study was to explore an approach for measuring fatigue crack growth rates (da/dN) for Cr-Mo pressure vessel steels in high-pressure hydrogen gas over a broad cyclic stress intensity factor (Delta K) range while limiting test duration, which could serve as an alternative to the method prescribed in ASME BPVC VIII-3, Article KD-10. Fatigue crack growth rates were measured for SA-372 Grade J and 34CrMo4 steels in hydrogen gas as a function of Delta K, load cycle frequency (f), and gas pressure. The da/dN vs. Delta K relationships measured for the Cr-Mo steels in hydrogen gas at 10 Hz indicate that capturing data at lower Delta K is valuable when these relationships serve as inputs into design-life analyses of hydrogen pressure vessels, since in this Delta K range crack growth rates in hydrogen gas approach rates in air. The da/dN vs. f data measured for the Cr-Mo steels in hydrogen gas at selected constant-Delta K levels demonstrate that crack growth rates at 10 Hz do not represent upper-bound behavior, since da/dN generally increases as f decreases. Consequently, although fatigue crack growth testing at 10 Hz can efficiently measure da/dN over a wide Delta K range, these da/dN vs. Delta K relationships at 10 Hz cannot be considered reliable inputs into design-life analyses. A possible hybrid approach to efficiently establishing the fatigue crack growth rate relationship in hydrogen gas without compromising data quality is to measure the da/dN vs. Delta K relationship at 10 Hz and then apply a correction based on the da/dN vs. f data. The reliability of such a hybrid approach depends on adequacy of the da/dN vs. f data, i.e., the data are measured at appropriate constant-Delta K levels and the data include upper-bound crack growth rates. C1 [Somerday, Brian] Sandia Natl Labs, Livermore, CA 94550 USA. [Bortot, Paolo] Tenaris Dalmine R&D, Dalmine, Italy. [Felbaum, John] FIBA Technol, Millbury, MA USA. RP Somerday, B (reprint author), Sandia Natl Labs, Livermore, CA 94550 USA. EM bpsomer@sandia.gov; pbortot@tenaris.com; JohnFelbaum@fibatech.com NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A016 PG 7 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600016 ER PT B AU Swindeman, R Ren, WJ Swindeman, MJ AF Swindeman, Robert Ren, Weiju Swindeman, Michael J. BE Kerr, M Rudland, D TI THE SIGNIFICANCE OF THE TERTIARY CREEP CRITERION IN SETTING TIME-DEPENDENT ALLOWABLE STRESSES SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The database for Alloy 800H was reviewed with respect to the initiation of tertiary creep and subsequent rupture. Data covered temperatures in the range of 600 to 1000 degrees C and times to 100,000 hours. The establishment of the time to initiate tertiary creep presented a problem because of the non-classical behavior of creep often exhibited in the creep curves. Stress values based on the current tertiary creep and rupture criteria were compared for several heats of material considering both classical and non-classical creep data. Fits to tertiary creep showed more scatter and it was found that 80% of the minimum stress for tertiary creep was generally lower than 67% of the minimum stress to rupture. Using only data from classical curves did produce stress values higher than those from the rupture criterion. C1 [Swindeman, Robert] Cromtech, 125 Amanda Dr, Oak Ridge, TN 37831 USA. [Ren, Weiju] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Swindeman, Michael J.] Air Prod & Chem Inc, Allentown, PA USA. RP Swindeman, R (reprint author), Cromtech, 125 Amanda Dr, Oak Ridge, TN 37831 USA. EM rswindeman@comcast.net; renw@ornl.gov; cuthbert@fuse.net NR 12 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A059 PG 7 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600059 ER PT B AU Watson, HL Gross, RE Harris, SP AF Watson, Holly L. Gross, Robert E. Harris, Stephen P. BE Kerr, M Rudland, D TI STATISTICAL PERFORMANCE EVALUATION OF SPRING OPERATED PRESSURE RELIEF VALVE RELIABILITY IMPROVEMENTS 2004 TO 2014 SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The United States Department of Energy's Savannah River Site (SRS) in Aiken, South Carolina, is dedicated to promoting site-level risk-based inspection (RBI) practices in order to maintain a safe and productive work environment. Inspecting component parts of operational systems, such as pressure relief valves (PRVs), is a vital part of SRS's safe operating envelope. This paper is a continuation of a SRS program to minimize the risks associated with PRV failures. Spring operated pressure relief valve (SOPRV) test data accumulated over the past ten years resulted in over 11,000 proof tests of both new and used valves. Improved performance is seen for air service valves resulting from changes to the maintenance program. Although, statistically significant improvement was not seen for liquid, gas, or steam service valves, analysis shows that the overall probability of failure on demand is trending down. Current SRS practices are reviewed and the reasons for improved performance are explored. C1 [Watson, Holly L.; Gross, Robert E.; Harris, Stephen P.] Savannah River Natl Lab, Aiken, SC 29808 USA. RP Watson, HL (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A054 PG 9 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600054 ER PT B AU Yu, XH Crooker, P Wang, YL Feng, ZL AF Yu, Xinghua Crooker, Paul Wang, Yanli Feng, Zhili BE Kerr, M Rudland, D TI High-Temperature Deformation Constitutive Law for Dissimilar Weld Residual Stress Modeling: Effect of Thermal Load on Strain Hardening SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Weld residual stress is one of the primary driving forces for primary water stress corrosion cracking in dissimilar metal welds (DMWs). To mitigate tensile residual stress in DMWs, it is critical to understand residual stress distribution by modeling techniques. Recent studies have shown that weld residual stress prediction using today's DMW residual stress models strongly depends on the strain-hardening constitutive model chosen. The commonly used strain-hardening models (isotropic, kinematic, and mixed) are all time-independent and inadequate to account for the time-dependent (viscous) plastic deformation at the elevated temperatures experienced during welding. For materials with profound strain-hardening, such as stainless steels and nickel-based alloys that are widely used in nuclear reactor and piping systems, the equivalent plastic strain the determinate factor of the flow stress can be highly dependent on the recovery and recrystallization processes. These processes are in turn a strong function of temperature, time, and deformation rate. Recently, the authors proposed a new temperature- and time-dependent strain-hardening constitutive model: the dynamic strain-hardening constitutive model. The application of such a model has resulted in improved weld residual stress prediction compared to the residual stress measurement results from the contour and deep-hole drilling methods. In this study, the dynamic strain-hardening behavior of Type 304 stainless steel and Alloy 82 used in pressure vessel nozzle DMWs is experimentally determined. The kinetics of the recovery and recrystallization of flow stress are derived from experiments, resulting in a semi-empirical equation as a function of pre-strain, time, and temperature that can be used for weld residual stress modeling. The method used in this work also provides an approach to study the kinetics of recovery and recrystallization of other materials with significant strain-hardening. C1 [Yu, Xinghua; Wang, Yanli; Feng, Zhili] Oak Ridge Natl Lab, POB 2008,MS-6095,One Bethel Valley Rd, Oak Ridge, TN 37831 USA. [Crooker, Paul] Elect Power Res Inst, Palo Alto, CA USA. RP Yu, XH (reprint author), Oak Ridge Natl Lab, POB 2008,MS-6095,One Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM yux1@ornl.gov RI Yu, Xinghua/E-2254-2017 OI Yu, Xinghua/0000-0001-9605-8239 NR 7 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A073 PG 5 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600073 ER PT B AU Zhang, L An, B Iijima, T Marchi, CS Somerday, B AF Zhang, Lin An, Bai Iijima, Takashi Marchi, Chris San Somerday, Brian BE Kerr, M Rudland, D TI HYDROGEN TRANSPORT AND HYDROGEN-ASSISTED CRACKING IN SUS304 STAINLESS STEEL DURING DEFORMATION AT LOW TEMPERATURES SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 6B LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID INDUCED MARTENSITE; EMBRITTLEMENT; NICKEL AB The behaviors of hydrogen transport and hydrogen-assisted cracking in hydrogen-precharged SUS304 austenitic stainless steel sheets in a temperature range from 177 to 298 K are investigated by a combined tensile and hydrogen release experiment as well as magnetic force microscopy (MFM) based on atomic force microscopy (AFM). It is observed that the hydrogen embrittlement increases with decreasing temperature, reaches a maximum at around 218 K, and then decreases with further temperature decrease. The hydrogen release rate increases with increasing strain until fracture at room temperature but remains near zero level at and below 218 K except for some small distinct release peaks. The MFM observations reveal that fracture occurs at phase boundaries along slip planes at room temperature and twin boundaries at 218 K. The role of strain-induced martensite in the hydrogen transport and hydrogen embrittlement is discussed. C1 [Zhang, Lin] Zhejiang Univ Technol, Hangzhou, Zhejiang, Peoples R China. [An, Bai; Iijima, Takashi] Natl Inst Adv Ind Sci & Technol, Tsukuba, Ibaraki, Japan. [Marchi, Chris San; Somerday, Brian] Sandia Natl Labs, Livermore, CA USA. RP Zhang, L (reprint author), Zhejiang Univ Technol, Hangzhou, Zhejiang, Peoples R China. EM zhlin@zjut.edu.cn; b.an@aist.go.jp; lijima-t@aist.go.jp; cwsanma@sandia.gov; bpsomer@sandia.gov NR 20 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5700-7 PY 2015 AR V06BT06A008 PG 6 WC Engineering, Mechanical SC Engineering GA BF1EI UT WOS:000380382600008 ER PT B AU Adkins, HE Suffield, SR Klymyshyn, NA Cuta, JM Piotter, J AF Adkins, H. E., Jr. Suffield, S. R. Klymyshyn, N. A. Cuta, J. M. Piotter, J. BE Bezdikian, G Han, ZH Feldman, M TI SNF TRANSPORTATION PACKAGE RESPONSE TO MACARTHUR MAZE FIRE SCENARIO: LEAK RATE DETERMINATION AFTER SEAL FAILURE SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Extensive and detailed modeling of the possible effect of the MacArthur Maze fire scenario on an over-the-road spent nuclear fuel transportation package has shown that the potential consequences could include release of radioactive material due to failure of the package seals. Structural and thermal modeling of the perfoimance of the lid closure and closure bolts show that the lid closure bolts would maintain positive clamping force throughout the fire transient scenario, such that the total release possible, even with conservative and bounding modeling assumptions, is two to three orders of magnitude below the regulatory limit for accident conditions. Typical leak rate models, such as the ANSI standard ANSI N14.5, are based on the expectation of intact seals for the package. Very little analytical work has been done to investigate leak rates from failed seals, since seal failure is, by definition, unacceptable performance in real-world applications. In order to evaluate the potential release from the SNF package subjected to the conditions of this fire scenario, an analytical modeling approach was developed to determine bounding leak rate estimates through the interface of the package closure lid and body flange. This modeling approach postulates complete loss of the 0-ring seal material, and assumes only metal-to-metal contact, maintained by the clamping force of the closure bolts, as it varies due to differential thermal expansion and changing internal package pressure during the transient. This paper describes the analytical approach used to perform the leak rate modeling for the SNF package, and presents results for the limiting design basis loading of the package. C1 [Adkins, H. E., Jr.; Suffield, S. R.; Klymyshyn, N. A.; Cuta, J. M.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Piotter, J.] US Nucl Regulatory Commiss, Washington, DC USA. RP Adkins, HE (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A051 PG 4 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200051 ER PT B AU Connolly, KJ Kalinina, E AF Connolly, Kevin J. Kalinina, Elena BE Bezdikian, G Han, ZH Feldman, M TI UNIT DOSE FACTORS FOR TRANSPORTATION OF RADIOACTIVE MATERIALS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB It will be necessary in the future to transport spent nuclear fuel on a large-scale basis from nuclear power plant sites to interim storage and/or a repository. Shipments of radioactive material are required to comply with regulations limiting the dose rate to no more than 0.1 mSv (10 mrem) per hour at 2 meters from the sides of the vehicle transporting the package. Determining the resulting dose to the public will be necessary for a number of reasons (e.g., stakeholder concerns, environmental impact statements). In order to understand the dose consequence of such a transportation system, this paper describes a method for determining unit dose factors. These are defined as the dose to the public per unit distance traveled along a road, rail, or waterway from one shipment assuming unit values for the other route specific parameters. The actual dose to the public is calculated using unit dose factors, the dose rate due to the radiation field emanating from the package, and characteristics of the route itself. Route specific parameters include the speed of the conveyance, the population density, and characteristics of the environment surrounding the route; these are provided by a routing tool. Using these unit dose factors, in conjunction with a routing tool, it will be possible to quantify the collective dose to the public and understand the ramifications of choosing specific routes. C1 [Connolly, Kevin J.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Kalinina, Elena] Sandia Natl Labs, Albuquerque, NM 87185 USA. RP Connolly, KJ (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A048 PG 7 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200048 ER PT B AU Feldman, M Connolly, K AF Feldman, Matthew Connolly, Kevin BE Bezdikian, G Han, ZH Feldman, M TI LAYING THE GROUNDWORK FOR A LARGE-SCALE SPENT NUCLEAR FUEL TRANSPORTATION SYSTEM SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The US Department of Energy Office of Nuclear Energy established the Nuclear Fuels Storage and Transportation Planning Project (NFST) to lay the groundwork for implementing interim storage of commercial spent nuclear fuel (SNF), including associated transportation activities. Progress is being made on long lead time, destination-independent aspects of the SNF transportation system in three areas: Institutional: stakeholder interactions needed for system success, including development of a transportation plan, policy development to implement Nuclear Waste Policy Act Section 180(c), and identification of a preliminary suite of national transportation routes based on regulatory requirements and coordination with stakeholders with diverse interests. Operational: activities required to run a large-scale transportation system; focus is on development of a new routing analysis tool, study of infrastructure near storage sites that may be de-inventoried first, and development of tools for modeling transportation activities. Hardware: casks, railcars, and other items necessary to operate the system. Activities are primarily focused on development of railcars compliant with Association of American Railroads Standard S-2043 and studies on the use of rail casks and their ancillary equipment. NFST is making significant progress in all of these areas for a future transportation system to transport SNF from commercial reactors. C1 [Feldman, Matthew; Connolly, Kevin] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Feldman, M (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. EM feldmanmr@ornl.gov; connollykj@ornl.gov NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A050 PG 5 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200050 ER PT B AU Han, ZH Fabian, R Pope, R Liu, Y Shuler, J AF Han, Zenghu Fabian, Ralph Pope, Ron Liu, Yung Shuler, James BE Bezdikian, G Han, ZH Feldman, M TI Application of the ASME Code to Radioactive Material Packaging/Cask - Lessons Learned from the 2014 DOE Training Course SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The U.S. Department of Energy (DOE) Packaging Certification Program (PCP), Office of Packaging and Transportation, Office of Environmental Management, has sponsored a suite of training courses that are conducted annually by Argonne National Laboratory (Argonne) in support of safety and security of nuclear and other radioactive material packages. One of these courses conducted by Argonne since 2000 is the Application of the ASME Code to Radioactive Material Transportation Packaging, which was expanded significantly in 2014 to include dry storage casks, resulting in a change in course title to the Application of the ASME Code to Radioactive Material Packaging/Cask. The purpose of the course is to provide guidance for the application of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (BPV) Code ("ASME Code") to transportation packaging and storage cask of radioactive materials, including used (or spent) nuclear fuel and high-level waste, and to facilitate the design, fabricatioh, examination, and testing of packagings and casks. Both regulatory requirements in 10 CFR Parts 71 and 72 and the ASME Code requirements for transportation and storage containments are addressed, with emphasis on the Code Section III, Division 3, "Containments for Transportation and Storage of Spent Nuclear Fuel and High Level Radioactive Material and Waste." Among the specific topics covered are the application of the ASME Code requirements to structural materials, containments, loading and design; the design of containment internal support structures and buckling analysis; fabrication, welding, examination, and test requirements; quality assurance; physical testing, structural and thermal modeling and analysis considerations; and containment, shielding, and criticality analysis considerations. Special topics covered include non-Code materials, hydrogen gas generation, and aging management for extended long-term storage of used fuel and subsequent transportation. The expanded training course was offered in June 2014 at Argonne with 27 participants representing mainly industry and government agencies. On the basis of the feedback and course evaluation by the participants, the course may be expanded from 3 to 4.5 days in the future to allow more time for in-class discussion and exercises, as well as to include additional topics related to aging management for extended long-term storage of used fuel and its post-storage transportation. The course provides insight into the DOE and the U.S. Nuclear Regulatory Commission (NRC) transportation and storage cask certification processes. The target audience is DOE, DOE contractors, other agency personnel, and commercial transportation packaging and storage cask engineering employees. Those responsible for designing, fabricating, testing, or packaging and casks, as well as preparing or reviewing the associated Safety Analysis Reports, will also benefit from the course. C1 [Han, Zenghu; Fabian, Ralph; Pope, Ron; Liu, Yung] Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. [Shuler, James] Dept Energy, Washington, DC USA. RP Han, ZH (reprint author), Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM zhhan@anl.gov; rrf@anl.gov; Poper787@comcast.net; yyliu@anl.gov; James.Shuler@em.doe.gov NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A054 PG 6 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200054 ER PT B AU Hensel, SJ Norkus, JK AF Hensel, Steve J. Norkus, John K. BE Bezdikian, G Han, ZH Feldman, M TI RADIOACTIVE MATERIAL RELEASE FROM A CONTAINMENT VESSEL DURING A FIRE ACCIDENT SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB A methodology is presented to determine the. source term for leaks and ruptures of pressurized vessels. The generic methodology is applied to a 9975 Primary Containment Vessel (PCV) which losses containment due to a hypothesized fire accident. The release due to a vessel rupture is approximately two orders of magnitude greater than the release due to a leak. C1 [Hensel, Steve J.; Norkus, John K.] Savannah River Nucl Solut, Savannah River Site, Aiken, SC 29808 USA. RP Hensel, SJ (reprint author), Savannah River Nucl Solut, Savannah River Site, Aiken, SC 29808 USA. EM steve.hensel@srnl.doe.gov; john.norkus@srs.gov NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A036 PG 4 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200036 ER PT B AU Kesterson, MR Askew, NM Hensel, SJ Laurinat, JE AF Kesterson, Matthew R. Askew, Neal M. Hensel, Steve J. Laurinat, James E. BE Bezdikian, G Han, ZH Feldman, M TI HYDROGEN FLAMMABILITY MITIGATION IN A CONTAINMENT VESSEL USING A RECOMBINER SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Plutonium oxide packaged in a 9975 Primary Containment Vessel (PCV) is evaluated in terms of preventing a flammable gas mixture due to hydrogen generation. Hydrogen is generated via radiolysis of adsorbed moisture on the plutonium oxide. A recombiner is placed in the PCV to recombine hydrogen and oxygen at concentrations to prevent hydrogen flammability. A detailed hydrogen diffusion analysis which evaluates expected and bounding conditions in order to demonstrate that hydrogen concentrations will remain below 5% by volume within PCV is presented. C1 [Kesterson, Matthew R.; Askew, Neal M.; Laurinat, James E.] Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. [Hensel, Steve J.] Savannah River Nucl Solut, Aiken, SC 29808 USA. RP Kesterson, MR (reprint author), Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. EM matthew.kesterson@srnl.doe.gov; neal.askew@srnl.doe.gov; steve.hensel@srnl.doe.gov; james.laurinat@srnl.doe.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A035 PG 5 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200035 ER PT B AU Klymyshyn, NA Adkins, HE Piotter, JM AF Klymyshyn, Nicholas A. Adkins, Harold E. Piotter, Jason M. BE Bezdikian, G Han, ZH Feldman, M TI CLOSURE BOLT MODELING FOR SEAL EVALUATION UNDER EXTREME THERMAL LOADS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The US Nuclear Regulatory Commission (NRC) recently completed an evaluation of a used nuclear fuel transportation package subjected to loads associated with the MacArthur Maze fire and overpass collapse of 2007. This historical event is used as the basis of an extreme accident scenario to investigate the performance of the package system under loads that are beyond regulatory limits and to assess the potential risk to the public. The accident scenario was modeled in a number of physics regimes, including fire dynamics models, thermal models, structural impact models, and structural thermal expansion models. In this case the thermal expansion behavior of the bolted closure was a key component of the leak rate calculations and offered a tough analytical challenge, which was ultimately resolved using a detailed nonlinear finite element model of the bolt threads with thread inserts discretely modeled. This paper describes the analytical steps that were taken, starting with classic bolt stress calculations and ending with sophisticated finite element analysis, while also putting the analysis into context of the larger analytical effort and the assessment of used nuclear fuel transportation package safety that is critical to the mission of the US NRC. C1 [Klymyshyn, Nicholas A.; Adkins, Harold E.] Pacific NW Natl Lab, Richland, WA 99352 USA. [Piotter, Jason M.] US Nucl Regulatory Commiss, Washington, DC USA. RP Klymyshyn, NA (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM Nicholas.Klymyshyn@pnnl.gov; Harold.Adkins@pnnl.gov; Jason.Piotter@nrc.gov NR 6 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A052 PG 8 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200052 ER PT B AU Korinko, PS Sindelar, RL Kesterson, RL AF Korinko, Paul S. Sindelar, Robert L. Kesterson, Ronald L. BE Bezdikian, G Han, ZH Feldman, M TI COMPARISON OF RING COMPRESSION TESTING TO THREE POINT BEND TESTING FOR UNIRRADIATED ZIRLO CLADDING SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Safe shipment and storage of nuclear reactor discharged fuel requires an understanding of how the fuel may perform under the various conditions that can be encountered. One specific focus of concern is performance during a shipment drop accident. Tests at Savannah River National Laboratory (SRNL) are being performed to characterize the properties of fuel clad relative to a mechanical accident condition such as a container drop. Unirradiated ZIRLO tubing samples have been charged with a range of hydride levels to simulate actual fuel rod levels. Samples of the hydrogen charged tubes were exposed to a radial hydride growth treatment (RHGT) consisting of heating to 400 degrees C, applying initial hoop stresses of 90 to 170 MPa with controlled cooling and producing hydride precipitates. Initial samples have been tested using both a) ring compression test (RCT) which is shown to be sensitive to radial hydride and b) three-point bend tests which are less sensitive to radial hydride effects. Hydrides are generated in Zirconium based fuel cladding as a result of coolant (water) oxidation of the clad, hydrogen release, and a portion of the released (nascent) hydrogen absorbed into the clad and eventually exceeding the hydrogen solubility limit. The orientation of the hydrides relative to the subsequent normal and accident strains has a significant impact on the failure susceptability. In this study the impacts of stress, temperature and hydrogen levels are evaluated in reference to the propensity for hydride reorientation from the circumferential to the radial orientation. In addition the effects of radial hydrides on the Quasi Ductile Brittle Transition Temperature (DBTT) were measured. The results suggest that a) the severity of the radial hydride impact is related to the hydrogen level-peak temperature combination (for example at a peak drying temperature of 400 degrees C; 800 PPM hydrogen has less of an impact/less radial hydride fraction than 200 PPM hydrogen for the same thermal history) and b) for critical strains in post drying handling, storage and accident conditions the 3 point bend strain tolerance is less affected by radial hydrides than the conventional ring compression test (the radial hydride related Quasi DBTT associated with a three point bend straining is lower (better) than that measured by the ring compression tests). C1 [Korinko, Paul S.; Sindelar, Robert L.; Kesterson, Ronald L.] Savannah River Natl Lab, Aiken, SC 29808 USA. RP Korinko, PS (reprint author), Savannah River Natl Lab, Aiken, SC 29808 USA. NR 5 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A055 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200055 ER PT B AU Laurinat, JE Hensel, SJ AF Laurinat, James E. Hensel, Steve J. BE Bezdikian, G Han, ZH Feldman, M TI ANALYSIS OF POWDER AIRBORNE RELEASE FRACTIONS FOR VESSEL RUPTURES SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The Department of Energy handbook for airborne releases from nonreactor nuclear facilities bases its bounding airborne release fraction (ARF) for pressurized powders on tests conducted at Pacific Northwest Laboratory (PNL). An analysis is presented that correlates the ARF from these tests. The amount of powder that becomes airborne is correlated in terms of an adjusted airborne release fraction (AARF) equal to the product of the powder entrainment from the powder bed and the ratio of the total vessel volume to the volume occupied by the powder bed. Powder entrainments and release fractions at low pressures are correlated using a fluidized bed analogy. The analysis shows that the entrainment is enhanced by a sonic shock if the pressure prior to the rupture exceeds approximately. 33 psig. A secondary, three-dimensional shock is predicted to occur at an initial pressure of approximately 332 psig. A correlation based on this analysis is used to predict the ARF for ruptures of vessels containing plutonium oxide. It is assumed that the oxide is pressurized by hydrogen that is radiolytically generated from adsorbed moisture. C1 [Laurinat, James E.] Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. [Hensel, Steve J.] Savannah River Nucl Solut LLC, Savannah River Site, Aiken, SC 29808 USA. RP Laurinat, JE (reprint author), Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. EM james.laurinat@srnl.doe.gov; steve.hensel@srnl.doe.gov NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR UNSP V007T07A038 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200038 ER PT B AU Laurinat, JE Kesterson, MR Hensel, SJ AF Laurinat, James E. Kesterson, Matthew R. Hensel, Steve J. BE Bezdikian, G Han, ZH Feldman, M TI ANALYSIS OF PRESSURIZATION OF PLUTONIUM OXIDE STORAGE VIALS DURING A POSTULATED FIRE SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The documented safety analysis for the Savannah River Site evaluates the consequences of a postulated 1000 degrees C fire in a glovebox. The radiological dose consequences for a pressurized release of plutonium oxide powder during such a fire depend on the maximum pressure that is attained inside the oxide storage vial. To enable evaluation of the dose consequences, pressure transients and venting flow rates have been calculated for exposure of the storage vial to the fire. A standard B vial with a capacity of approximately 8 cm(3) was selected for analysis. The analysis compares the pressurization rate from heating and evaporation of moisture adsorbed onto the plutonium oxide contents of the vial with the pressure loss due to venting of gas through the threaded connection between the vial cap and body. Tabulated results from the analysis include maximum pressures, maximum venting velocities, and cumulative vial volumes vented during the first 10 minutes of the fire transient. Results are obtained for various amounts of oxide in the vial, various amounts of adsorbed moisture, different vial orientations, and different surface fire exposures. C1 [Laurinat, James E.; Kesterson, Matthew R.] Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. [Hensel, Steve J.] Savannah River Nucl Solut LLC, Savannah River Site, Aiken, SC 29808 USA. RP Laurinat, JE (reprint author), Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. EM james.laurinat@srnl.doe.gov; matthew.kesterson@srnl.doe.gov; steve.hensel@srnl.doe.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A037 PG 10 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200037 ER PT B AU Li, J Liu, YY AF Li, Jie Liu, Yung Y. BE Bezdikian, G Han, ZH Feldman, M TI VALIDATION OF THERMAL ANALYSIS OF DRY STORAGE CASKS AT DIABLO CANYON SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB This paper is a continuation of previous work; it focuses on validating the thermal analysis of a vertical dry storage cask by using the measured temperature data and the results obtained by others in thermal modeling of a HI-STORM 100 storage cask at Diablo Canyon's independent spent fuel storage installation (ISFSI). The cask chosen for thermal analysis contains a welded canister for 32 pressurized water reactor (PWR) used fuel assemblies in a stainless-steel basket with a total decay heat load of 17.05 kW. An effective thermal conductivity model was used to represent the used fuel assemblies with non-uniform assembly heat loads. The pressure of the canister's helium fill gas was assumed to be 5 atm, and the ambient temperature was assumed to be 10 degrees C. The results showed reasonably good agreement between the calculated and measured canister axial surface temperatures. The results of ANSYS/FLUENT simulations showed that a tighter convergence criterion yielded slightly better agreement with the data; however, improvement could be obtained by adjusting the assumed ambient temperature value in the simulation. Validating the results of ANSYS/FLUENT simulation against the data (as well as the experience and additional insights gained from the validation exercise) is important to our future simulation and analysis of the thermal performance of dry storage casks, particularly for aging management and monitoring the condition and performance of dry casks during extended long-term storage at ISFSIs. C1 [Li, Jie; Liu, Yung Y.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Li, J (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. EM jieli@anl.gov; yyliu@anl.gov NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A045 PG 6 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200045 ER PT B AU Liu, YY Tsai, HC Nutt, M AF Liu, Y. Y. Tsai, H-C Nutt, M. BE Bezdikian, G Han, ZH Feldman, M TI Monitoring Helium Integrity in Welded Canisters SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Monitoring the interior of a welded canister containing spent (or used) nuclear fuel for its functional and structural integrity is exceptionally challenging because of the intense levels of heat and radiation and the difficulties of transmitting the sensor signals out through the sealed stainless-steel canister wall. Yet, confirmation of canister integrity is crucial for the aging management of the dry cask storage systems (DCSSs) for extended long-term storage and subsequent transportation of used fuel. A canister breach can lead to serious consequences release of radioactive contaminants; oxidation of fuel cladding, which could compromise fuel rod integrity and criticality safety; and generation of potentially explosive hydrogen gas. The development of the Remote Area Modular Monitoring (RAMM) technology and 3D simulation of thermal performance of a vertical dry storage cask are reported in this paper, as is a preliminary plan for field-testing and evaluation of multiple prototype RAMM units on selected dry storage casks at an Independent Spent Fuel Storage Installation (ISFSI) site. C1 [Liu, Y. Y.; Tsai, H-C; Nutt, M.] Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Liu, YY (reprint author), Argonne Natl Lab, Nucl Engn Div, 9700 S Cass Ave, Argonne, IL 60439 USA. EM yyliu@anl.gov; htsai@anl.gov; wnutt@anl.gov NR 12 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A053 PG 6 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200053 ER PT B AU Martinez, O Blessinger, C AF Martinez, Oscar Blessinger, Christopher BE Bezdikian, G Han, ZH Feldman, M TI ORNL SPECIAL FORM TESTING OF SEALED-SOURCE ENCAPSULATIONS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB In the United States of America all transportation of radioactive material is regulated by the Department of Transportation (DOT), along with input from the Nuclear Regulatory Commission. Beginning in 2008 a new type of sealed-source encapsulation package was developed at Oak Ridge National Laboratory (ORNL); these packages contain radioactive material and are regulated and transported in accordance with the requirements set for DOT Class 7 hazardous material. DOT provides regulations pertaining to specific package contents categorized as special form designs. The special form designation indicates that the encapsulated radioactive contents have a very low probability of dispersion even when subjected to significant structural conditions. All ORNL DOT designs have been certified by DOT as being special form materials. The special form designs have been shown to simplify the delivery, transport, acceptance, and receipt process. Simplification of the transportation process makes the sealed source encapsulation designs very advantageous for shipment. to various facilities throughout the lifetime of the special form material. To this end, DOT Certificates of Competent Authority (CoCAs) have been sought for the design suitable for containing high-alpha-activity actinide materials. This design consists of a core of porous zirconia matrix pre-encapsulated within triangular canister (ZipCan) tiles that are then enclosed by a spherical shell. This new ZipCan design and a similar rectangular ZipCube design were tested for compliance with the regulations found in Title 49, Code of Federal Regulations, Section 173.469, Tests for Special Form Class 7 (Radioactive) (49 CFR 173.469) materials. The spherical enclosure was subjected to 9 m impact, 1 m percussion, and 10-minute thermal tests. Before and after each test the designs were subjected to a helium leak check and a bubble test. The ZipCan tiles and core were subjected to the tests required for ISO 2919:1999(E), including a Class 4 impact test and heat test, and were subsequently subjected to helium leakage rate tests [49 CFR 173.469(a)(4)(i)]. The impact tile test unit contained a nonradioactive surrogate; however, the thermal test unit contained a radioactive source. All three designs are still undergoing regulatory special form testing, and all three sealed source encapsulation designs are to be submitted to DOT for CoCAs. C1 [Martinez, Oscar; Blessinger, Christopher] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Martinez, O (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 5 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A056 PG 9 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200056 ER PT B AU Purtscher, P Sheng, S Dickson, T AF Purtscher, Patrick Sheng, Simon Dickson, Terry BE Bezdikian, G Han, ZH Feldman, M TI ANALYSIS OF CIRCUMFERENTIAL WELDS IN BWRs FOR LIFE BEYOND 60 SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB This paper describes the probabilistic fracture mechanics (PFM) analyzes of the conditional probability of failure (CPF) due to brittle fracture of circumferential welds (CW) from a cold overpressurize event in boiling water reactors (BWR) operated for 72 EFPY. This analysis used the Fracture Analysis for Vessels, Oak Ridge (FAVOR) computer code, developed at the Oak Ridge National Laboratory (ORNL), under United States Nuclear Regulatory Commission (NRC) funding. Two typical vessel configurations and the associated material properties for the beltline materials, CW, axial welds (AW), and plates (PL) were used. The analyses consider the potential effects of different fabrication options, shop vs field. Shop-fabrication is mainly by submerged arc weld (SAW) process, while field fabrication used the shielded metal arc weld (SMAW) process. In either case, repairs would have required the SMAW process. The calculations show that field-fabricated vessels would have a slight increase in the CPF compared to shop-fabricated vessels, but the assumed fraction of repair welds was more significant than the fabrication option. The details demonstrate the relative importance of surface-breaking flaws vs. embedded flaws for the assumed transient. The results confirm the conclusions from the original analysis from BWRVIP-05 and BWRVIP-74, the CPF for CW is orders of magnitude less than that of PL and AW regions of the vessel; therefore, the ASME Code-required volumetric examinations of the CW every 10 years as part of the in-service inspection (ISI) program does not change the overall CPF for the vessel. In all the cases analyzed, the total CPF values of the BWRs for 72 EFPY are. below the goal for safe operation. C1 [Purtscher, Patrick; Sheng, Simon] Nucl Regulatory Commiss, Rockville, MD 20852 USA. [Dickson, Terry] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Purtscher, P (reprint author), Nucl Regulatory Commiss, Rockville, MD 20852 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A023 PG 8 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200023 ER PT B AU Rosseel, TM Sokolov, MA Nanstad, RK AF Rosseel, Thomas M. Sokolov, Mikhail A. Nanstad, Randy K. BE Bezdikian, G Han, ZH Feldman, M TI MACHINING TEST SPECIMENS FROM HARVESTED ZION RPV SEGMENTS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID IRRADIATION AB The decommissioning of the Zion Nuclear Generating Station (NGS) in Zion, Illinois, presents a special and timely opportunity for developing a better understanding of materials degradation and other issues associated with extending the lifetime of existing nuclear power plants (NPPs) beyond 60 years of service. In support of extended service and current operations of the US nuclear reactor fleet, the Oak Ridge National Laboratory (ORNL), through the Department of Energy (DOE), Light Water Reactor Sustainability (LWRS) Program, is coordinating and contracting with Zion Solutions, LLC, a subsidiary of Energy Solutions, an international nuclear services company, the selective procurement of materials, structures, components, and other items of interest from the decommissioned reactors. In this paper, we will discuss the acquisition of segments of the Zion Unit 2 Reactor Pressure Vessel (RPV), cutting these segments into blocks from the beltline and upper vertical welds and plate material and machining those blocks into mechanical (Charpy, compact tension, and tensile) test specimens and coupons for microstructural (TEM, SEM, APT, SANS and nano indention) characterization. Access to service-irradiated RPV welds and plate sections will allow through wall attenuation studies to be performed, which will be used to assess current radiation damage models [1]. C1 [Rosseel, Thomas M.; Sokolov, Mikhail A.; Nanstad, Randy K.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RP Rosseel, TM (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A015 PG 6 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200015 ER PT B AU Sokolov, MA Server, WL Nanstad, RK AF Sokolov, Mikhail A. Server, William L. Nanstad, Randy K. BE Bezdikian, G Han, ZH Feldman, M TI THERMAL ANNEALING OF REACTOR PRESSURE VESSELS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB Some of the current fleet of nuclear power plants is poised to reach their end of life and will require an operating life time extension. Therefore, the main structural components, including the reactor pressure vessel (RPV), will be subject to higher neutron exposures than originally planned. These longer operating times raise serious concerns regarding our ability to manage the reliability of RPV steels at such high doses. Thermal annealing is the only option that can, to some degree, recover irradiated beltline region transition temperature shift and recover upper shelf energy properties lost during radiation exposure and extend RPV service life. This paper reviews the experience accumulated internationally with development and implementation of thermal annealing to RPV and potential perspectives for carrying out thermal annealing on US nuclear power plant RPVs. C1 [Sokolov, Mikhail A.; Nanstad, Randy K.] Oak Ridge Natl Lab, POB 2008,MS 6151, Oak Ridge, TN 37831 USA. [Server, William L.] ATI Consulting, Black Mt, NC 28711 USA. RP Sokolov, MA (reprint author), Oak Ridge Natl Lab, POB 2008,MS 6151, Oak Ridge, TN 37831 USA. EM sokolovm@ornl.gov; WILLIAMSER@aol.com; nanstadrk@ornl.gov NR 18 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A021 PG 6 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200021 ER PT B AU Verst, C Sindelar, RL Skidmore, TE Daugherty, WL AF Verst, Christopher Sindelar, Robert L. Skidmore, T. Eric Daugherty, William L. BE Bezdikian, G Han, ZH Feldman, M TI Performance of Bolted Closure Joint Elastomers Under Cask Aging Conditions SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID STRESS-RELAXATION; POLYMERS AB The bolted closure joint of a bare spent fuel cask is susceptible to age-related degradation and potential loss of confinement function under long-term storage conditions. Elastomeric seals, components of the joints typically used to facilitate leak testing of the primary seals that include the metallic seal and bolting, are susceptible to degradation over time by several mechanisms, principally thermo-oxidation, stress-relaxation, and radiolytic degradation. Irradiation and thermal exposure testing and evaluation of an ethylene propylene diene monomer (EPDM) elastomeric seal material similar to that used in the CASTOR ' V/21 cask. Testing covers a matrix of temperature and radiation exposure conditions relevant to extended storage of the cask. Semi empirical models are being developed to predict loss of sealing force. A special insert was developed to allow Compressive Stress Relaxation (CSR) measurements before and after the irradiation and/or thermal exposure without unloading the elastomer. A condition of the loss of sealing force for the onset of leakage was suggested. The experimentation and modeling being performed could enable acquisition of extensive coupled aging data as well. as an estimation of the time when loss of sealing under aging (temperature/radiation) conditions may occur. C1 [Verst, Christopher; Sindelar, Robert L.; Skidmore, T. Eric; Daugherty, William L.] Savannah River Natl Lab, Mat Sci & Technol, Aiken, SC 29808 USA. RP Verst, C (reprint author), Savannah River Natl Lab, Mat Sci & Technol, Aiken, SC 29808 USA. EM christopher.verst@srs.gov; robert.sindelar@srnl.doe.gov; eric.skidmore@srnl.doe.gov; william.daugherty@srnl.doe.gov NR 18 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A049 PG 9 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200049 ER PT B AU Watkins, RW Opperman, EK AF Watkins, Robert W. Opperman, Erich K. BE Bezdikian, G Han, ZH Feldman, M TI ONSITE TRANSPORTATION OF RADIOACTIVE MATERIALS AT THE SAVANNAH RIVER SITE SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 7 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The Savannah River Site (SRS) Transportation Safety Document (TSD) defines the onsite packaging and transportation safety program at SRS and demonstrates its compliance with Department of Energy (DOE) transportation safety requirements, to include DOE Order 460.1C, Packaging and Transportation Safety, DOE Order 461.2, Onsite Packaging and Transfer of Materials of National Security Interest, and 10 CFR 830, Nuclear Safety Management (Subpart B). C1 [Watkins, Robert W.] Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. [Opperman, Erich K.] Savannah River Nucl Solut, Savannah River Site, Aiken, SC 29808 USA. RP Watkins, RW (reprint author), Savannah River Natl Lab, Savannah River Site, Aiken, SC 29808 USA. EM robert.watkins@srnl.doe.gov; erich.opperman@srs.gov NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5702-1 PY 2015 AR V007T07A044 PG 4 WC Engineering, Mechanical SC Engineering GA BF1EH UT WOS:000380382200044 ER PT B AU Nie, JR Xu, J Braverman, JI AF Nie, Jinsuo R. Xu, Jim Braverman, Joseph I. BE Tsai, CS TI DEVELOPMENT OF TARGET POWER SPECTRAL DENSITY FUNCTIONS COMPATIBLE WITH DESIGN RESPONSE SPECTRA SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 8 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB For seismic analysis of nuclear structures, synthetic acceleration time histories are often required and are generated to envelop design response spectra following the U.S. Nuclear Regulatory Commission, Standard Review Plan (SRP) Section 3.7.1. It has been recognized that without an additional check of the power spectral density (PSD) functions, spectral matching alone may not ensure that synthetic acceleration time histories have adequate power over the frequency range of interest. The SRP Section 3.7.1 Appendix A provides a target PSD function for the Regulatory Guide 1.60 horizontal spectral shape. For other spectral shapes, additional guidance on developing the target PSD functions compatible with the design spectra is desired. This paper presents a general procedure for the development of target PSD functions for any practical design response spectral shapes, which has been incorporated into the recent SRP 3.7.1, Revision 4. C1 [Nie, Jinsuo R.; Xu, Jim] US Nucl Regulatory Commiss, Div Engn, Off New Reactors, Washington, DC 20555 USA. [Braverman, Joseph I.] Brookhaven Natl Lab, Nucl Sci & Technol Dept, Upton, NY 11973 USA. RP Nie, JR (reprint author), US Nucl Regulatory Commiss, Div Engn, Off New Reactors, Washington, DC 20555 USA. EM Jinsuo.nie@nrc.gov; jim.xu@nrc.gov; braverman@bnl.gov NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5703-8 PY 2015 AR V008T08A029 PG 8 WC Engineering, Mechanical SC Engineering GA BF1EG UT WOS:000380381900029 ER PT B AU Witarto, W Yan, Y Wang, SJ Mo, YL Chang, KC Tang, Y Ruis, M AF Witarto, W. Yan, Y. Wang, S. J. Mo, Y. L. Chang, K. C. Tang, Y. Ruis, M. BE Tsai, CS TI ANALYTICAL STUDY OF 1D PERIODIC FOUNDATIONS FOR STRUCTURAL VIBRATION ISOLATION SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 8 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div AB The application of periodic foundations for structural vibration isolation has been intensively studied in the past decade. The ability of the periodic foundation to block the seismic wave on certain frequency ranges has put this kind of foundations as a prosperous next generation of seismic isolators. This paper first describes general idea of basic theory of one dimensional (1D) periodic foundation. The parametric studies based on the material and the geometric properties conducted in the past are discussed. The experimental tests on 1D periodic foundation are reported as well. Based on the promising results of the past research, 1D periodic foundations have been regarded as one of the simplest, yet effective foundation to block the seismic wave in all directions. In addition to the review of the existing studies, enhanced analyses of 1D periodic foundations have been performed and are presented in this paper. Finite element analysis model of 1D periodic foundations with a three story steel frame as the superstructure was utilized for the parametric study. The study was conducted under both Shear Wave (S-Wave) and Primary Wave (P-Wave). The independent variables include the number of unit cells in the periodic foundation, the foundation and superstructure interaction, and the main frequency content of earthquake ground motion. It is found that the main frequency content of the earthquake and the natural frequency of the super structure-periodic foundation system play the major role in the superstructure response. While the number of unit cell affect the superstructure response, the effect is not as significant as the aforementioned. C1 [Witarto, W.; Yan, Y.; Mo, Y. L.] Univ Houston, Houston, TX 77004 USA. [Wang, S. J.; Chang, K. C.] Natl Ctr Res Earthquake Engn, Taipei, Taiwan. [Tang, Y.] Argonne Natl Lab, Argonne, IL 60439 USA. [Ruis, M.] Elect Power Res Inst, Charlotte, NC USA. RP Witarto, W (reprint author), Univ Houston, Houston, TX 77004 USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5703-8 PY 2015 AR V008T08A042 PG 8 WC Engineering, Mechanical SC Engineering GA BF1EG UT WOS:000380381900042 ER PT B AU Yan, Y Witarto, W Wang, SJ Mo, YL Chang, KC Tang, Y Ruis, M AF Yan, Y. Witarto, W. Wang, S. J. Mo, Y. L. Chang, K. C. Tang, Y. Ruis, M. BE Tsai, CS TI PERIODIC MATERIAL BASED SEISMIC ISOLATION FOR SMALL MODULAR REACTORS SO ASME PRESSURE VESSELS AND PIPING CONFERENCE - 2015, VOL 8 LA English DT Proceedings Paper CT ASME Pressure Vessels and Piping Conference, PVP-2015 CY JUL 19-23, 2015 CL Boston, MA SP ASME, Pressure Vessels & Pip Div ID FOUNDATIONS; ENERGY AB The concept of periodic materials, based on the theory of solid-state physics, is applied to earthquake engineering. The periodic material is a material that possesses distinct characteristics that prevent waves with certain frequencies from being transmitted through it; therefore, this material can be used in structural foundations to block unwanted seismic waves with certain frequencies. In this paper, small modular reactor with one dimensional and three dimensional periodic foundations were studied. The theoretical band gaps of one-dimensional (1D) and three-dimensional (3D) periodic foundations were obtained using transfer matrix methods and finite element method, respectively. The dynamic response of the small modular reactor supported by a periodic foundation to that of conventional concrete foundation was compared. It is showed that the periodic foundations are an effective way to reduce the seismic response of small modular reactors (SMR) under seismic excitations. C1 [Yan, Y.; Witarto, W.; Mo, Y. L.] Univ Houston, Houston, TX 77004 USA. [Wang, S. J.; Chang, K. C.] Natl Ctr Res Earthquake Engn Beijing, Taipei, Taiwan. [Tang, Y.] Argonne Natl Lab, Argonne, IL 60439 USA. [Ruis, M.] Elect Power Res Inst, Charlotte, NC USA. RP Yan, Y (reprint author), Univ Houston, Houston, TX 77004 USA. NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5703-8 PY 2015 AR V008T08A041 PG 5 WC Engineering, Mechanical SC Engineering GA BF1EG UT WOS:000380381900041 ER PT B AU Garai, A Diosady, L Murman, S Madavan, N AF Garai, Anirban Diosady, Laslo Murman, Scott Madavan, Nateri GP ASME TI DNS OF FLOW IN A LOW-PRESSURE TURBINE CASCADE USING A DISCONTINUOUS-GALERKIN SPECTRAL-ELEMENT METHOD SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 2B LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID LARGE-EDDY SIMULATION; DIRECT NUMERICAL-SIMULATION; INCOMING WAKES; TURBULENT-FLOW; NAVIER-STOKES; BLADE; FORMULATION; EQUATIONS; PASSAGE AB A new computational capability under development for accurate and efficient high-fidelity direct numerical simulation (DNS) and large-eddy simulation (LES) of turbomachinery is described. This capability is based on an entropy-stable Discontinuous-Galerkin spectral-element approach that extends to arbitrarily high orders of spatial and temporal accuracy, and is implemented in a computationally efficient manner on a modern high performance computer architecture. A validation study using this method to perform DNS of flow in a low-pressure turbine airfoil cascade is presented. The results indicate that the method captures the main features of the flow. C1 [Garai, Anirban] Oak Ridge Associated Univ, NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. [Diosady, Laslo] Sci & Technol Corp, NASA, Ames Res Ctr, Moffett Field, CA USA. [Murman, Scott; Madavan, Nateri] NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. RP Garai, A (reprint author), Oak Ridge Associated Univ, NASA, Ames Res Ctr, Moffett Field, CA 94035 USA. NR 34 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5664-2 PY 2015 AR V02BT39A023 PG 10 WC Engineering, Mechanical SC Engineering GA BF1AE UT WOS:000380084700023 ER PT B AU Harun, NF Tucker, D Adams, TA AF Harun, Nor Farida Tucker, David Adams, Thomas A., II GP ASME TI OPEN LOOP AND CLOSED LOOP PERFORMANCE OF SOLID OXIDE FUEL CELL TURBINE HYBRID SYSTEMS DURING FUEL COMPOSITION CHANGES SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 3 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID POLYGENERATION; FLEXIBILITY; DESIGN; POWER AB The dynamic behavior of a solid oxide fuel cell gas turbine hybrid system (SOFC/GT) from both open and closed loop transients in response to sudden changes in fuel composition was experimentally investigated. A pilot-scale (200kW - 700kW) hybrid facility available at the U.S. Department of Energy, National Energy Technology Laboratory was used to perform the experiments using a combination of numerical models and actual equipment. In the open loop configuration, the turbine speed was driven by the thermal effluent fed into the gas turbine system, where the thermal effluent was determined by the feedforward fuel cell control system. However, in the closed loop configuration, a load-based speed control system was used to maintain the turbine speed constant at 40,500rpm by adjusting the load on the turbine, in addition to the implementation of the fuel cell system control. The open loop transient response showed that the impacts of fuel composition changes on key process variables, such as fuel cell thermal effluent, turbine speed and cathode feed stream conditions in the SOFC/GT systems were propagated over the course of the test, except for the cathode inlet temperature. The trajectories of the aforementioned variables are discussed in this paper to better understand the resulting mitigation/propagation behaviors. This will help lead to the development of novel control strategies to mitigate the negative impacts experienced during fuel composition transients of SOFC/GT systems. C1 [Harun, Nor Farida; Adams, Thomas A., II] McMaster Univ, Dept Chem Engn, 1280 Main St West, Hamilton, ON L8S 4L7, Canada. [Tucker, David] US DOE, Natl Energy Technol Lab, Morgantown, WV 26507 USA. RP Harun, NF (reprint author), McMaster Univ, Dept Chem Engn, 1280 Main St West, Hamilton, ON L8S 4L7, Canada. NR 14 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5667-3 PY 2015 AR V003T06A023 PG 10 WC Engineering, Mechanical SC Engineering GA BF1AD UT WOS:000380084500036 ER PT B AU Larosa, L Traverso, A Zaccaria, V AF Larosa, Luca Traverso, Alberto Zaccaria, Valentina GP ASME TI AMBIENT TEMPERATURE IMPACT ON PRESSURIZED SOFC HYBRID SYSTEMS SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 3 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID OXIDE FUEL-CELL; PREDICTIVE CONTROL; MODEL; RIG AB In this paper advanced control strategies based on Model Predictive Control (MPC) method are compared against a traditional PlD controller in a Gas Turbine Pressurized SOFC hybrid system. A model of the integrated mGT-SOFC hybrid system has been developed to analyze the impact of ambient temperature changes on system performance and dynamic behaviour. Four different MIMO controllers (multi input multi output) based on a linearized system model have been implemented in order to control fuel cell temperature and power with different ambient temperatures. Fuel cell temperature is regulated by manipulating the cell by-pass mass flow, while power is regulated by changing the fuel cell electrical current and fuel mass flow (the fuel utilization factor is kept constant). Load following simulations have been carried out as follows: the same load ramp from 100% to 80% of fuel cell power and back has been set and studied under three different ambient conditions, 263K, 288K and 313K (-10 degrees C, 15 degrees C and 40 degrees C). MPC demonstrated superior performance over the two distributed PID controls, thanks to the better setpoint tracking on the cell temperature, which is particularly evident when the ambient temperature deviates from the nominal condition. This is mainly explained by the capability of MPC in including the effects of non-linearities of the real system. C1 [Larosa, Luca; Traverso, Alberto] Univ Genoa, TPG, Genoa, Italy. [Zaccaria, Valentina] US DOE, Natl Energy Technol Lab, Morgantown, WV USA. RP Larosa, L (reprint author), Univ Genoa, TPG, Genoa, Italy. NR 27 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5667-3 PY 2015 AR V003T06A006 PG 12 WC Engineering, Mechanical SC Engineering GA BF1AD UT WOS:000380084500019 ER PT B AU Zaccaria, V Traverso, A Tucker, D AF Zaccaria, Valentina Traverso, Alberto Tucker, David GP ASME TI A REAL-TIME DEGRADATION MODEL FOR HARDWARE IN THE LOOP SIMULATION OF FUEL CELL GAS TURBINE HYBRID SYSTEMS SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 3 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID SOFC; TEMPERATURE; PERFORMANCE AB The theoretical efficiencies of gas turbine fuel cell hybrid systems make them an ideal technology for the future. Hybrid systems focus on maximizing the utilization of existing energy technologies by combining them. However, one pervasive limitation that prevents the commercialization of such systems is the relatively short lifetime of fuel cells, which is due in part to several degradation mechanisms. In order to improve the lifetime of hybrid systems and to examine long-term stability, a study was conducted to analyze the effects of electrochemical degradation in a solid oxide fuel cell (SOFC) model. The SOFC model was developed for hardware-in-the-loop simulation with the constraint of real-time operation for coupling with turbomachinery and other system components. To minimize the computational burden, algebraic functions were fit to empirical relationships between degradation and key process variables: current density, fuel utilization, and temperature. Previous simulations showed that the coupling of gas turbines and SOFCs could reduce the impact of degradation as a result of lower fuel utilization and more flexible current demands. To improve the analytical capability of the model, degradation was incorporated on a distributed basis to identify localized effects and more accurately assess potential failure mechanisms. For syngas fueled systems, the results showed that current density shifted to underutilized sections of the fuel cell as degradation progressed. Over-all, the time to failure was increased, but the temperature difference along cell was increased to unacceptable levels, which could not be determined from the previous approach. C1 [Zaccaria, Valentina; Tucker, David] US DOE, Natl Energy Technol Lab, Morgantown, WV USA. [Traverso, Alberto] Univ Genoa, Ternnochem Power Grp, Genoa, Italy. RP Zaccaria, V (reprint author), US DOE, Natl Energy Technol Lab, Morgantown, WV USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5667-3 PY 2015 AR V003T06A022 PG 8 WC Engineering, Mechanical SC Engineering GA BF1AD UT WOS:000380084500035 ER PT B AU Zhou, NN Yang, C Tucker, D AF Zhou, Nana Yang, Chen Tucker, David GP ASME TI EVALUATION OF COMPRESSOR BLEED AIR TRANSIENTS IN A FUEL CELL GAS TURBINE HYBRID SYSTEM USING HARDWARE SIMULATION SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 3 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID THERMAL MANAGEMENT AB Thermal management in the fuel cell component was a critical issue in the operation of a solid oxide fuel cell gas turbine (SOFC/GT) hybrid system. The effective management of fuel cell cathode air mass flow was thought to be a potential method to improve the thermal management during transients. The U.S. Department of Energy, National Energy Technology Laboratory (NETL) designed and built a hybrid performance (HyPer) facility by interfacing a real time solid oxide fuel cell system numerical model through hardware with a physical gas turbine system. Perturbations were accomplished by diverting part of the compressor discharge directly to atmosphere through the manipulation of a bleed-air bypass valve in open loop experiments using the HyPer facility. Two tests were performed: the fuel cell numerical simulation model was both decoupled and fully coupled with the gas turbine hardware component. The responses of both physical subsystem and virtual subsystem to the disturbances were evaluated in this paper. Distributed temperatures and current densities along the fuel cell were evaluated. Turbine speed and system pressures were analyzed. The application of bleed-air bypass valve was shown to have a minimal impact on cathode airflow, but a significant effect on turbine speed. Thus, the manipulation of compressor bleed was expected to be an effective means to mitigate the impact of a sudden increase in turbine speed, such as fuel cell load reductions or load trips. C1 [Zhou, Nana; Yang, Chen] Chongqing Univ, Coll Power Engn, Chongqing, Peoples R China. [Tucker, David] US DOE, Natl Energy Technol Lab, Morgantown, WV USA. RP Zhou, NN (reprint author), Chongqing Univ, Coll Power Engn, Chongqing, Peoples R China. NR 19 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5667-3 PY 2015 AR V003T06A021 PG 10 WC Engineering, Mechanical SC Engineering GA BF1AD UT WOS:000380084500034 ER PT S AU Gordon, LB Graham, N AF Gordon, Lloyd B. Graham, Nicole GP IEEE TI A COMPLETE ELECTRICAL ARC HAZARD CLASSIFICATION SYSTEM AND ITS APPLICATION SO CONFERENCE RECORD OF THE 2015 IEEE IAS ELECTRICAL SAFETY WORKSHOP (ESW) SE IEEE IAS Electrical Safety Workshop LA English DT Proceedings Paper CT IEEE lAS Electrical Safety Workshop CY JAN 26-30, 2015 CL Louisville,, KY SP IEEE, IAS DE Electrical safety; electrical injury; electrical hazard classification; electrical safety standards; arc flash; arc ID FREE-BURNING ARCS; PRESSURE; PREDICTIONS; MECHANISMS; INJURIES AB The Standard for Electrical Safety in the Workplace, NFPA 70E, and relevant OSHA electrical safety standards evolved in the US, over the past 40 years, to address the hazards of 60-Hz power that are faced primarily by electricians, linemen, and others performing facility and utility work. This leaves a substantial gap in the management of other types of electrical hazards including battery banks, DC power systems, capacitor banks, and solar power systems. Although many of these systems are fed by 50/60-Hz alternating current (ac) energy, we find substantial use of direct current (dc) electrical energy, and the use of capacitors, inductors, batteries, solar, and radiofrequency (RF) power. The electrical hazards of these forms of electricity and their systems are different than for 50/60 Hz ac power. At this workshop in 2009 we presented a comprehensive approach to classifying the electrical shock hazards of all types of electricity, including various waveforms and various types of sources of electrical energy. That paper introduced a new comprehensive electrical shock hazard classification system that used a combination of voltage, shock current available, fault current available, power, energy, and waveform to classify all forms of electrical hazards with a focus on the shock hazard. That paper was based on various research conducted over the past 100 years and on decades of experience. This paper continues the effort in understanding and managing all forms of injury from all forms of electricity with the introduction of a comprehensive approach to classifying all forms of injury from the electrical arc, including thermal, blast pressure, hearing, radiation, and shrapnel injury. The general term "arc" is divided into the arc, arc flash, and arc blast as a first subdivision of type of source of injury. Then, the parameters of voltage, short circuit current, energy, waveform, gap distance, gap geometry, enclosure geometry, and time are used to choose various approaches to analysis. Recent efforts to understand, model, and estimate injury for these types of systems, are reviewed. Most of the focus to understand and predict injury for dc, capacitor, solar, and rf arc hazards has been only in the past 10 years. A comprehensive approach to analyzing all forms of injury from all forms of electrical arcs is presented. C1 [Gordon, Lloyd B.] Los Alamos Natl Lab, Box 1280, Los Alamos, NM 87544 USA. [Graham, Nicole] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Gordon, LB (reprint author), Los Alamos Natl Lab, Box 1280, Los Alamos, NM 87544 USA. EM lbdragonli@gmail.com; grahamn1610@gmail.com NR 47 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2326-3288 BN 978-1-4799-4782-9 J9 IEEE IAS ELECTR SAFE PY 2015 PG 11 WC Engineering, Electrical & Electronic SC Engineering GA BF1JA UT WOS:000380401300014 ER PT S AU Sferrazza, S Garrison, H AF Sferrazza, Sal Garrison, Heath GP IEEE TI New Industrial Electrical Safe Work Practices SO CONFERENCE RECORD OF THE 2015 IEEE IAS ELECTRICAL SAFETY WORKSHOP (ESW) SE IEEE IAS Electrical Safety Workshop LA English DT Proceedings Paper CT IEEE lAS Electrical Safety Workshop CY JAN 26-30, 2015 CL Louisville,, KY SP IEEE, IAS DE Power electronics equipment; underground distribution; NFPA 70E; OSHA 1910.269; electrical safety management; electrical safety training; UPS AB This paper shares electrical work practices and recommends additional training and qualifications for industrial electrical workers. It introduces new work methods to safely work with special electrical hazards for power electronics equipment and underground electrical distribution equipment. The paper will be of most interest to industry, outdoor electrical construction workers, manufacturers, and other institutions where a variety of this type of equipment exists. These work methods have recently been placed in practice at the National Renewable Energy Lab (NREL) in Golden CO. C1 [Sferrazza, Sal; Garrison, Heath] NREL, 15301 Denver West Pkwy, Golden, CO 80401 USA. RP Sferrazza, S (reprint author), NREL, 15301 Denver West Pkwy, Golden, CO 80401 USA. EM sal.sferrazza@nrel.gov; heath.garrison@nrel.gov NR 2 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2326-3288 BN 978-1-4799-4782-9 J9 IEEE IAS ELECTR SAFE PY 2015 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BF1JA UT WOS:000380401300026 ER PT S AU Francois, MM AF Francois, Marianne M. BE Sahu, KC TI Recent Numerical and Algorithmic Advances within the Volume Tracking Framework for Modeling Interfacial Flows SO IUTAM SYMPOSIUM ON MULTIPHASE FLOWS WITH PHASE CHANGE: CHALLENGES AND OPPORTUNITIES SE Procedia IUTAM LA English DT Proceedings Paper CT IUTAM Symposium on Multiphase Flows with Phase Change Challenges and Opportunities CY DEC 08-11, 2014 CL Indian Inst Technol, Hyderabad, INDIA SP IUTAM, Dept Sci Technol India, Ministry Earth Sciences, CSIR, Natl Sci Fdn, USA, Intel Ansys Fujitsu & TSI India HO Indian Inst Technol DE volume tracking; volume-of-fluid; curvature; interface reconstruction; surface tension ID OF-FLUID METHOD; SURFACE-TENSION; LEVEL SET; RECONSTRUCTION; COMPUTATIONS; SIMULATIONS; DYNAMICS AB A review of recent advances made in numerical methods and algorithms within the volume tracking framework is presented. The volume tracking method, also known as the volume-of-fluid method has become an established numerical approach to model and simulate interfacial flows. Its advantage is its strict mass conservation. However, because the interface is not explicitly tracked but captured via the material volume fraction on a fixed mesh, accurate estimation of the interface position, its geometric properties and modeling of interfacial physics in the volume tracking framework remain difficult. Several improvements have been made over the last decade to address these challenges. In this paper, the multimaterial interface reconstruction method via power diagram, curvature estimation via heights and mean values and the balanced-force algorithm for surface tension are highlighted. (C) 2015 The Authors. Published by Elsevier B.V. C1 [Francois, Marianne M.] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Francois, MM (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. OI Francois, Marianne/0000-0003-3062-6234 NR 30 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2210-9838 J9 PROC IUTAM PY 2015 VL 15 BP 270 EP 277 DI 10.1016/j.piutam.2015.04.037 PG 8 WC Mechanics; Physics, Applied SC Mechanics; Physics GA BF2WX UT WOS:000380506000036 ER PT J AU Wilding, M Benmore, C Weber, R Parise, J Lazareva, L Skinner, L Alderman, O Tamalonis, A AF Wilding, Martin Benmore, Chris Weber, Rick Parise, John Lazareva, Lena Skinner, Lawrie Alderman, Oliver Tamalonis, Antony TI Exploring the structure of high temperature, iron-bearing liquids SO MATERIALS TODAY-PROCEEDINGS LA English DT Proceedings Paper CT Joint 3rd UK-China Steel Research Forum / 15th CMA-UK Conference on Materials Science and Engineering CY JUL 10-11, 2014 CL Rutherford Appleton Lab, Harwell, ENGLAND HO Rutherford Appleton Lab DE High energy X-ray diffraction; liquid structure; containerless techniques ID DIFFRACTION; DENSITY AB This paper describes the direct measurements of the structure of iron-bearing liquids using a combination of containerless techniques and in-situ high energy x-ray diffraction. These capabilities provide data that is important to help model and optimize processes such as smelting, steel making, and controlling slag chemistry. A successful programme of liquid studies has been undertaken and the Advanced Photon Source using these combined techniques which include the provision of gas mixing and the control of pO(2) and the changing influence of mixed valance elements. It is possible to combine rapid image acquisition with quenching of liquids to obtain the full diffraction patterns of deeply supercooled liquids and the metastable supercooled liquid regime, where the liquid structures and viscosity change most dramatically, can also be explored. (C) 2015 The Authors. Published by Elsevier Ltd. C1 [Wilding, Martin] Aberystwyth Univ, Dept Math & Phys, Aberystwyth SY23 3BZ, Dyfed, Wales. [Benmore, Chris; Skinner, Lawrie] Argonne Natl Lab, Xray Sci Div, Argonne, IL 60439 USA. [Weber, Rick; Skinner, Lawrie; Alderman, Oliver; Tamalonis, Antony] Mat Dev Inc, Arlington Hts, IL 60004 USA. [Parise, John; Lazareva, Lena] SUNY Stony Brook, Dept Geosci, Stony Brook, NY 11794 USA. RP Wilding, M (reprint author), Aberystwyth Univ, Dept Math & Phys, Aberystwyth SY23 3BZ, Dyfed, Wales. OI Benmore, Chris/0000-0001-7007-7749 NR 18 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2214-7853 J9 MATER TODAY-PROC JI Mater. Today-Proc. PY 2015 VL 2 SU 2 BP 358 EP 363 DI 10.1016/j.matpr.2015.05.050 PG 6 GA CM9BL UT WOS:000358000300017 ER PT B AU Cornillon, PA Hengartner, N Lefieux, V Matzner-Lober, E AF Cornillon, Pierre-Andre Hengartner, Nick Lefieux, Vincent Matzner-Lober, Eric BE Antoniadis, A Poggi, JM Brossat, X TI Fully Nonparametric Short Term Forecasting Electricity Consumption SO MODELING AND STOCHASTIC LEARNING FOR FORECASTING IN HIGH DIMENSIONS SE Lecture Notes in Statistics LA English DT Proceedings Paper CT Modeling and Stochastic Learning for Forecasting in High Dimensions CY JUN 05-07, 2016 CL Paris, FRANCE SP EDF R&D, Optimization Simulation Risks & Statistics Dept ID SMOOTHING PARAMETER SELECTION; GENERALIZED CROSS-VALIDATION; MODELS AB Electricity Transmission System Operators (TSO) are responsible for operating, maintaining and developing the high and extra high voltage network. They guarantee the reliability and proper operation of the power network. Anticipating electricity demand helps to guarantee the balance between generation and consumption at all times, and directly influences the reliability of the power system. In this paper, we focus on predicting short term electricity consumption in France. Several competitors such as iterative bias reduction, functional nonparametric model or non-linear additive autoregressive approach are compared to the actual SARIMA method. Our results show that iterative bias reduction approach outperforms all competitors both on Mean Absolute Percentage Error and on the percentage of forecast errors higher than 2,000 MW. C1 [Cornillon, Pierre-Andre; Matzner-Lober, Eric] Univ Rennes 2, Rennes, France. [Hengartner, Nick] Los Alamos Natl Lab, Los Alamos, NM USA. [Lefieux, Vincent] RTE EPT, Paris, France. [Lefieux, Vincent] UPMC ISUP, Paris, France. [Matzner-Lober, Eric] Agrocampus Ouest, Rennes, France. RP Cornillon, PA (reprint author), Univ Rennes 2, Rennes, France. EM pierre-andre.cornillon@uhb.fr; nickh@lanl.gov; vincent.lefieux@rte-france.com; eml@uhb.fr NR 24 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES BN 978-3-319-18732-7; 978-3-319-18731-0 J9 LECT NOTES STAT PY 2015 VL 217 BP 79 EP 93 DI 10.1007/978-3-319-18732-7_5 PG 15 WC Mathematics, Applied; Statistics & Probability SC Mathematics GA BF2BH UT WOS:000380452600005 ER PT J AU Dong, B Byna, S Wu, KS AF Dong, Bin Byna, Surendra Wu, Kesheng BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Spatially Clustered Join on Heterogeneous Scientific Data Sets SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel AB In the era of data-intensive scientific discovery, data analysis is critical for scientists to identify essential information from the mountains of data generated by large-scale simulations or experiments. A generic operation in scientific data analysis is to combine information from multiple data sets, which are stored in heterogeneous file formats. This operation is typically known as a Join in database management field. Currently, a join operation involving multiple data sets in different file formats is time-consuming because of the need to prepare data (i.e., to convert data into a uniform format or to ingest into a database) and to run the join algorithms. Furthermore, data processing languages, such as SQL (Structured Query Language), can not easily express typical scientific analysis tasks such as interpolation. In this paper, we propose three techniques to address these challenges: a two-level data model to process data from different file formats without converting to a uniform format, a data organization structure known as Multi-Dimensional Binning (MDBin), and a join processing algorithm known as Spatially Clustered Join (SCJoin). Together, these techniques allow scientific data files to be used for query processing with less I/O cost and fast query response time without the extra cost to perform file format conversion and data ingestion. Evaluation of our proposed techniques in joining and interpolating data sets generated by a plasma physics simulation studying space weather phenomenon showed up to 8X improvement over FastQuery. Querying with our solution outperforms SciDB, a popular array data management system for scientific data, by 43X-143X. We also demonstrate that our methods scale to 64K CPU cores in analyzing 32TB data on a large-scale supercomputing system. C1 [Dong, Bin; Byna, Surendra; Wu, Kesheng] Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. RP Dong, B (reprint author), Lawrence Berkeley Natl Lab, 1 Cyclotron Rd, Berkeley, CA 94720 USA. EM DBin@lbl.gov; SByna@lbl.gov; KWu@lbl.gov NR 26 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 371 EP 380 PG 10 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600047 ER PT J AU Li, TL Wang, K Zhao, DF Qiao, K Sadooghi, I Zhou, XB Raicu, I AF Li, Tonglin Wang, Ke Zhao, Dongfang Qiao, Kan Sadooghi, Iman Zhou, Xiaobing Raicu, Ioan BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI A Flexible QoS Fortified Distributed Key-Value Storage System for the Cloud SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE Distributed key-value store; QoS; NoSQL database; Request batching; Distributed systems AB In the era of big data and cloud, distributed key-value stores are increasingly used as building blocks of large-scale applications. Comparing to traditional relational databases, key-value stores are particularly compelling due to their low latency and excellent scalability. Many big companies, such as Facebook and Amazon, run multiple different applications and services on top of a single key-value store deployment to reduce the deployment and maintenance complexity as well as economic cost. However, every application has its performance requirement but most current key-value store systems are designed to serve every application request equally. This design works well when a single application accesses the key-value store, but it is not as good for the emerging concurrent multi-application scenario. In this paper, we present ZHT/Q, a flexible QoS (Quality of Service) fortified distributed key-value storage system for clouds and data centers. It improves the overall throughput by an order of magnitude and still satisfies different applications' latency requirements with QoS using dynamic and adaptive request batching mechanisms. The experiment results show that our new system delivers up to 28 times higher throughput than the base solution while more than 99% of requests' latency requirements are satisfied. C1 [Li, Tonglin; Zhao, Dongfang; Sadooghi, Iman; Raicu, Ioan] IIT, Chicago, IL 60616 USA. [Raicu, Ioan] Argonne Natl Lab, Argonne, IL 60439 USA. [Wang, Ke] Intel, Santa Clara, CA USA. [Qiao, Kan] Google, Mountain View, CA USA. [Zhou, Xiaobing] Hortonworks, Santa Clara, CA USA. RP Li, TL (reprint author), IIT, Chicago, IL 60616 USA. NR 46 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 515 EP 522 PG 8 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600063 ER PT J AU Steed, CA Drouhard, M Beaver, J Pyle, J Bogen, PL AF Steed, Chad A. Drouhard, Margaret Beaver, Justin Pyle, Joshua Bogen, Paul L., II BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Matisse: A Visual Analytics System for Exploring Emotion Trends in Social Media Text Streams SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel AB Dynamically mining textual information streams to gain real-time situational awareness is especially challenging with social media systems where throughput and velocity properties push the limits of a static analytical approach. In this paper, we describe an interactive visual analytics system, called Matisse, that aids with the discovery and investigation of trends in streaming text. Matisse addresses the challenges inherent to text stream mining through the following technical contributions: (1) robust stream data management, (2) automated sentiment/emotion analytics, (3) interactive coordinated visualizations, and (4) a flexible drill-down interaction scheme that accesses multiple levels of detail. In addition to positive/negative sentiment prediction, Matisse provides fine-grained emotion classification based on Valence, Arousal, and Dominance dimensions and a novel machine learning process. Information from the sentiment/emotion analytics are fused with raw data and summary information to feed temporal, geospatial, term frequency, and scatterplot visualizations using a multi-scale, coordinated interaction model. After describing these techniques, we conclude with a practical case study focused on analyzing the Twitter sample stream during the week of the 2013 Boston Marathon bombings. The case study demonstrates the effectiveness of Matisse at providing guided situational awareness of significant trends in social media streams by orchestrating computational power and human cognition. C1 [Steed, Chad A.; Drouhard, Margaret; Beaver, Justin; Pyle, Joshua; Bogen, Paul L., II] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. RP Steed, CA (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. EM csteed@acm.org; mdrouhard@acm.org; beaverjm@ornl.gov; jmpyle771@gmail.com; plbogen@google.com OI Steed, Chad/0000-0002-3501-909X NR 27 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 807 EP 814 PG 8 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600095 ER PT J AU Sukumar, SR AF Sukumar, Sreenivas R. BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Open Research Challenges with Big Data - A Data-Scientist's Perspective SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE Scalable machine learning; data science; science of data ID TOOL AB In this paper, we discuss data-driven discovery challenges of the Big Data era. We observe that recent innovations in being able to collect, access, organize, integrate, and query massive amounts of data from a wide variety of data sources have brought statistical data mining and machine learning under more scrutiny and evaluation for gleaning insights from the data than ever before. In that context, we pose and debate the question - Are data mining algorithms scaling with the ability to store and compute? If yes, how? If not, why not? We survey recent developments in the state-of-the-art to discuss emerging and outstanding challenges in the design and implementation of machine learning algorithms at scale. We leverage experience from real-world Big Data knowledge discovery projects across domains of national security, healthcare and manufacturing to suggest our efforts be focused along the following axes: (i) the 'data science' challenge - designing scalable and flexible computational architectures for machine learning (beyond just data-retrieval); (ii) the 'science of data' challenge - the ability to understand characteristics of data before applying machine learning algorithms and tools; and (iii) the 'scalable predictive functions' challenge - the ability to construct, learn and infer with increasing sample size, dimensionality, and categories of labels. We conclude with a discussion of opportunities and directions for future research. C1 [Sukumar, Sreenivas R.] Oak Ridge Natl Lab, Computat Sci & Engn Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. RP Sukumar, SR (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM sukumarsr@ornl.gov NR 28 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 1272 EP 1278 PG 7 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600151 ER PT J AU Kim, J Dong, B Byna, S Wu, KS AF Kim, Jinoh Dong, Bin Byna, Surendra Wu, Kesheng BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Security for the Scientific Data Services Framework SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel AB Scientific data is often shared among researchers and even reorganized by colleagues or third-party users. Thus, it is essential to provide an adequate degree of access control for such shared data to preserve a desired level of security requirements. In this work, we develop an essential, lightweight access control model for secure data services in a limited distributed setting such as an HPC cluster. In particular, we consider SDS (the Scientific Data Services framework) as a use case system, which is a framework offering performance-optimized data access, reorganization, and analysis. We outline the requirements and challenges for access control for effective data services, and develop an authorization service model based on the defined requirements. We also present an initial prototyping model. C1 [Kim, Jinoh] Texas A&M Univ, Dept Comp Sci, Commerce, TX 75429 USA. [Dong, Bin; Byna, Surendra; Wu, Kesheng] Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. RP Kim, J (reprint author), Texas A&M Univ, Dept Comp Sci, Commerce, TX 75429 USA. EM jinoh.kim@tamuc.edu; dbin@lbl.gov; sbyna@lbl.gov; kwu@lbl.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 1871 EP 1875 PG 5 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600229 ER PT J AU Gyurjyan, V Bartle, A Lukashin, C Mancilla, S Oyarzun, R Vakhnin, A AF Gyurjyan, V. Bartle, A. Lukashin, C. Mancilla, S. Oyarzun, R. Vakhnin, A. BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Component Based Dataflow Processing Framework SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE service oriented; publish-subscribe; data-driven; data-flow; earth science; data fusion AB In this paper we present SOA based CLAs12 event Reconstruction and Analyses (CLARA) framework used to develop Earth Science multi-sensor data fusion, processing, and analytics applications (NAIADS: NASA JLAB collaboration). CLARA design focus is on two main traits: a) real-time data stream processing, and b) service oriented architecture (SOA) in a flow based programming (FBP) paradigm. Data driven and data centric architecture of CLARA presents an environment for developing agile, elastic, multilingual data processing applications. The CLARA framework presents solutions, capable of processing large volumes of data interactively and substantially faster than batch systems. C1 [Gyurjyan, V.] TJNAF, Newport News, VA 23606 USA. [Lukashin, C.] NASA, Langley Res Ctr, Hampton, VA 23665 USA. [Bartle, A.] Mechdyne Co, Virginia Beach, VA USA. [Mancilla, S.; Oyarzun, R.] Univ Tecn Federico Santa Maria, Valparaiso, Chile. [Vakhnin, A.] Sci Syst & Applicat Inc, Hampton, VA USA. RP Gyurjyan, V (reprint author), TJNAF, Newport News, VA 23606 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 1938 EP 1942 PG 5 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600239 ER PT J AU Lukashin, C Bartle, A Callaway, E Gyurjyan, V Mancilla, S Oyarzun, R Vakhnin, A AF Lukashin, C. Bartle, A. Callaway, E. Gyurjyan, V. Mancilla, S. Oyarzun, R. Vakhnin, A. BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Earth Science Data Fusion with Event Building Approach SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE earth science; data fusion; framework; event builder AB Objectives of the NASA Information And Data System (NAIADS) project are to develop a prototype of a conceptually new middleware framework to modernize and significantly improve efficiency of the Earth Science data fusion, big data processing and analytics. The key components of the NAIADS include: Service Oriented Architecture (SOA) multi-lingual framework, multi-sensor coincident data Predictor, fast into-memory data Staging, multi-sensor data-Event Builder, complete data-Event streaming (a workflow with minimized IO), on-line data processing control and analytics services. The NAIADS project is leveraging CLARA framework, developed in Jefferson Lab, and integrated with the ZeroMQ messaging library. The science services are prototyped and incorporated into the system. Merging the SCIAMACHY Level-1 observations and MODIS/Terra Level-2 (Clouds and Aerosols) data products, and ECMWF re-analysis will be used for NAIADS demonstration and performance tests in compute Cloud and Cluster environments. C1 [Lukashin, C.] NASA, Langley Res Ctr, Hampton, VA 23665 USA. [Bartle, A.; Callaway, E.] Mechdyne Corp, Virginia Beach, VA USA. [Gyurjyan, V.] Thomas Jefferson Natl Accelerator Facil, Newport News, VA USA. [Mancilla, S.; Oyarzun, R.] Univ Tecn Federico Santa Maria, Valparaiso, Chile. [Vakhnin, A.] Sci Syst & Applicat Inc, Hampton, VA USA. RP Lukashin, C (reprint author), NASA, Langley Res Ctr, Hampton, VA 23665 USA. NR 7 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 1943 EP 1947 PG 5 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600240 ER PT J AU Williams, DN Lautenschlager, M Balaji, V Cinquini, L DeLuca, C Denvil, S Duffy, D Evans, B Ferraro, R Juckes, M Trenham, C AF Williams, Dean N. Lautenschlager, Michael Balaji, Venkatramani Cinquini, Luca DeLuca, Cecilia Denvil, Sebastien Duffy, Daniel Evans, Ben Ferraro, Robert Juckes, Martin Trenham, Claire BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Strategic Roadmap for the Earth System Grid Federation SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel AB This article describes the Earth System Grid Federation (ESGF) mission and an international integration strategy for data, database and computational architecture, and stable infrastructure highlighted by the authors (the ESGF Executive Committee). These highlights are key developments needed over the next five to seven years in response to large-scale national and international climate community projects that depend on ESGF for success. Quality assurance and baseline performance from laptop to high performance computing characterizes available and potential data streams and strategies. These are required for interactive data collections to remedy gaps in handling enormous international federated climate data archives. Appropriate cyber security ensures protection of data according to projects but still allows access and portability to different ESGF and individual groups and users. A timeline and plan for forecasting interoperable tools takes ESGF from a federated database archive to a robust virtual laboratory and concludes the article. C1 [Williams, Dean N.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Lautenschlager, Michael] German Climate Comp Ctr, DKRZ, Hamburg, Germany. [Balaji, Venkatramani] Princeton Univ, Princeton, NJ USA. [Cinquini, Luca; Ferraro, Robert] NASA, Jet Prop Lab, Pasadena, CA USA. [DeLuca, Cecilia] NOAA, Earth Syst Res Lab, Boulder, CO USA. [Denvil, Sebastien] IPSL, Paris, France. [Duffy, Daniel] NASA, Goddard Space Flight Ctr Address, Greenbelt, MD USA. [Evans, Ben; Trenham, Claire] Australian Natl Univ, Natl Computat Infrastruct, Canberra, ACT, Australia. [Juckes, Martin] British Atmosphere Data Ctr, Chilton, Oxon, England. RP Williams, DN (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM williams13@llnl.gov; lautenschlager@dkrz.de; balaji@princeton.edu; luca.cinquini@jpl.nasa.gov; cecilia.deluca@noaa.gov; sebastien.denvil@ipsl.jussieu.fr; daniel.q.duffy@nasa.gov; ben.evans@anu.edu.au; robert.ferraro@jpl.nasa.gov; Martin.juckes@stfc.ac.uk; Claire.trenham@anu.edu.au NR 9 TC 0 Z9 0 U1 2 U2 2 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2182 EP 2190 PG 9 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600273 ER PT J AU Drouhard, M Steed, CA Hahn, S Proffen, T Daniel, J Matheson, M AF Drouhard, Margaret Steed, Chad A. Hahn, Steven Proffen, Thomas Daniel, Jamison Matheson, Michael BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Immersive Visualization for Materials Science Data Analysis using the Oculus Rift SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel ID VIRTUAL ENVIRONMENTS; REALITY AB In this paper, we propose strategies and objectives for immersive data visualization with applications in materials science using the Oculus Rift virtual reality headset. We provide background on currently available analysis tools for neutron scattering data and other large-scale materials science projects. In the context of the current challenges facing scientists, we discuss immersive virtual reality visualization as a potentially powerful solution. We introduce a prototype immersive visualization system, developed in conjunction with materials scientists at the Spallation Neutron Source, which we have used to explore large crystal structures and neutron scattering data. Finally, we offer our perspective on the greatest challenges that must be addressed to build effective and intuitive virtual reality analysis tools that will be useful for scientists in a wide range of fields. C1 [Drouhard, Margaret; Steed, Chad A.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. [Hahn, Steven; Proffen, Thomas] Oak Ridge Natl Lab, Neutron Data Anal & Visualizat Div, Oak Ridge, TN 37831 USA. [Daniel, Jamison; Matheson, Michael] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. RP Drouhard, M (reprint author), Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN 37831 USA. EM mdrouhard@acm.org; csteed@acm.org; hahnse@ornl.gov; tproffen@ornl.gov; danieljr@ornl.gov; mathesonma@ornl.gov RI Proffen, Thomas/B-3585-2009; OI Proffen, Thomas/0000-0002-1408-6031; Steed, Chad/0000-0002-3501-909X NR 22 TC 0 Z9 0 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2453 EP 2461 PG 9 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600308 ER PT J AU Senter, K Sukumar, SR Patton, RM Chaum, E AF Senter, Katherine Sukumar, Sreenivas R. Patton, Robert M. Chaum, Edward BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Using Clinical Data, Hypothesis Generation Tools and PubMed Trends to Discover the Association between Diabetic Retinopathy and Antihypertensive Drugs SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE Data mining; text analytics; cohort discovery; intervention assessment; hypothesis generation ID MELLITUS; THERAPIES; DISEASE AB Diabetic retinopathy (DR) is a leading cause of blindness and common complication of diabetes. Many diabetic patients take antihypertensive drugs to prevent cardiovascular problems, but these drugs may have unintended consequences on eyesight. Six common classes of antihypertensive drug are angiotensin converting enzyme (ACE) inhibitors, alpha blockers, angiotensin receptor blockers (ARBs), beta-blockers, calcium channel blockers, and diuretics. Analysis of medical history data might indicate which of these drugs provide safe blood pressure control, and a literature review is often used to guide such analyses. Beyond manual reading of relevant publications, we sought to identify quantitative trends in literature from the biomedical database PubMed to compare with quantitative trends in the clinical data. By recording and analyzing PubMed search results, we found wide variation in the prevalence of each antihypertensive drug in DR literature. Drug classes developed more recently such as ACE inhibitors and ARBs were most prevalent. We also identified instances of change-over-time in publication patterns. We then compared these literature trends to a dataset of 500 diabetic patients from the UT Hamilton Eye Institute. Data for each patient included class of antihypertensive drug, presence and severity of DR. Graphical comparison revealed that older drug classes such as diuretics, calcium channel blockers, and beta-blockers were much more prevalent in the clinical data than in the DR and antihypertensive literature. Finally, quantitative analysis of the dataset revealed that patients taking beta-blockers were statistically more likely to have DR than patients taking other medications, controlling for presence of hypertension and year of diabetes onset. This finding was concerning given the prevalence of beta-blockers in the clinical data. We determined that clinical use of beta-blockers should be minimized in diabetic patients to prevent retinal damage. C1 [Senter, Katherine] Univ Penn, Coll Arts & Sci, Philadelphia, PA 19104 USA. [Sukumar, Sreenivas R.; Patton, Robert M.] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN USA. [Chaum, Edward] Univ Tennessee, Hlth Sci Ctr, Hamilton Eye Inst, Knoxville, TN 37996 USA. RP Senter, K (reprint author), Univ Penn, Coll Arts & Sci, Philadelphia, PA 19104 USA. EM ksenter@sas.upenn.edu; sukumarsr@ornl.gov; pattonrm@ornl.gov; echaum@uthsc.edu NR 18 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2578 EP 2582 PG 5 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600323 ER PT J AU Singh, R Graves, JA Lee, S Sukumar, SR Shankar, M AF Singh, Rina Graves, Jeffrey A. Lee, Sangkeun Sukumar, Sreenivas R. Shankar, Mallikarjun BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Enabling Graph Appliance for Genome Assembly SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel ID DE-BRUIJN GRAPHS; REPRESENTATION; EXPRESSION; EFFICIENT; PLATFORM AB In recent years, there has been a huge growth in the amount of genomic data available as reads generated from various genome sequencers. The number of reads generated can be huge, ranging from hundreds to billions of nucleotide, each varying in size. Assembling such large amounts of data is one of the challenging computational problems for both biomedical and data scientists. Most of the genome assemblers that have developed use de Bruijn graph techniques. A de Bruijn graph represents a collection of read sequences by billions of vertices and edges, which require large amounts of memory and computational power to store and process. This is the major drawback to de Bruijn graph assembly. Massively parallel, multi-threaded, shared memory systems can be leveraged to overcome some of these issues. The objective of our research is to investigate the feasibility and scalability issues of de Bruijn graph assembly on Cray's Urika-GD system; Urika-GD is a high performance graph appliance with a large shared memory and massively multithreaded custom processor designed for executing SPARQL queries over large-scale RDF data sets. However, to the best of our knowledge, there is no research on representing a de Bruijn graph as an RDF graph or finding Eulerian paths in RDF graphs using SPARQL for potential genome discovery. In this paper, we address the issues involved in representing de Bruin graphs as RDF graphs and propose an iterative querying approach for searching cycles to find Eulerian paths in large RDF graphs. We evaluate the performance of our implementation on real world ebola genome datasets and illustrate how genome assembly can be accomplished with Urika-GD using iterative SPARQL queries. C1 [Singh, Rina; Graves, Jeffrey A.] Tennessee Technol Univ, Knowledge Discovery Lab, Cookeville, TN 38505 USA. [Lee, Sangkeun; Sukumar, Sreenivas R.; Shankar, Mallikarjun] Oak Ridge Natl Lab, Computat Sci & Engn Div, Oak Ridge, TN USA. RP Singh, R (reprint author), Tennessee Technol Univ, Knowledge Discovery Lab, Cookeville, TN 38505 USA. EM rsingh43@students.tntech.edu; jagraves21@students.tntech.edu; lees4@ornl.gov; sukumarsr@ornl.gov; shankarm@ornl.gov NR 37 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2583 EP 2590 PG 8 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600324 ER PT J AU Malhotra, K Hobson, TC Valkova, S Pullum, LL Ramanathan, A AF Malhotra, Kunal Hobson, Tanner C. Valkova, Silvia Pullum, Laura L. Ramanathan, Arvind BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Sequential Pattern Mining of Electronic Healthcare Reimbursement Claims: Experiences and Challenges in Uncovering How Patients are Treated by Physicians SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE public health dynamics; sequential pattern mining; health informatics ID DECISION-SUPPORT-SYSTEMS; MEDICAL-RECORD SYSTEMS; TEMPORAL DATA; OUTCOMES; INFORMATION; PERFORMANCE; STANDARDS; BARRIERS; SAFETY AB We examine the use of electronic healthcare reimbursement claims (EHRC) for analyzing healthcare delivery and practice patterns across the United States (US). We show that EHRCs are correlated with disease incidence estimates published by the Centers for Disease Control. Further, by analyzing over 1 billion EHRCs, we track patterns of clinical procedures administered to patients with autism spectrum disorder (ASD), heart disease (HD) and breast cancer (BC) using sequential pattern mining algorithms. Our analyses reveal that in contrast to treating HD and BC, clinical procedures for ASD diagnoses are highly varied leading up to and after the ASD diagnoses. The discovered clinical procedure sequences also reveal significant differences in the overall costs incurred across different parts of the US, indicating a lack of consensus amongst practitioners in treating ASD patients. We show that a data-driven approach to understand clinical trajectories using EHRC can provide quantitative insights into how to better manage and treat patients. Based on our experience, we also discuss emerging challenges in using EHRC datasets for gaining insights into the state of contemporary healthcare delivery and practice in the US. C1 [Malhotra, Kunal] Georgia Inst Technol, Coll Comp, Atlanta, GA 30332 USA. [Hobson, Tanner C.; Pullum, Laura L.; Ramanathan, Arvind] Oak Ridge Natl Lab, Computat Sci & Engn, Oak Ridge, TN USA. [Valkova, Silvia] IMS Govt Solut, Plymouth Meeting, PA USA. [Pullum, Laura L.; Ramanathan, Arvind] Oak Ridge Natl Lab, Hlth Data Sci Inst, Oak Ridge, TN USA. RP Malhotra, K (reprint author), Georgia Inst Technol, Coll Comp, Atlanta, GA 30332 USA. EM kmalhotra7@gatech.edu; svalkova@theimsinstitute.org; pullumll@ornl.gov; ramanathana@ornl.gov NR 37 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2670 EP 2679 PG 10 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600335 ER PT J AU Ushizima, D Perciano, T Parkinson, D AF Ushizima, Daniela Perciano, Talita Parkinson, Dilworth BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Fast Detection of Material Deformation through Structural Dissimilarity SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE pattern recognition; 3D structure analysis; spectral methods; material inspection ID SIMILARITY AB Designing materials that are resistant to extreme temperatures and brittleness relies on assessing structural dynamics of samples. Algorithms are critically important to characterize material deformation under stress conditions. Here, we report on our design of coarse-grain parallel algorithms for image quality assessment based on structural information and on crack detection of gigabyte-scale experimental datasets. We show how key steps can be decomposed into distinct processing flows, one based on structural similarity (SSIM) quality measure, and another on spectral content. These algorithms act upon image blocks that fit into memory, and can execute independently. We discuss the scientific relevance of the problem, key developments, and decomposition of complementary tasks into separate executions. We show how to apply SSIM to detect material degradation, and illustrate how this metric can be allied to spectral analysis for structure probing, while using tiled multi-resolution pyramids stored in HDF5 chunked multi-dimensional arrays. Results show that the proposed experimental data representation supports an average compression rate of 10X, and data compression scales linearly with the data size. We also illustrate how to correlate SSIM to crack formation, and how to use our numerical schemes to enable fast detection of deformation from 3D datasets evolving in time. C1 [Ushizima, Daniela; Perciano, Talita] Univ Calif Berkeley, CRD, Berkeley, CA 94720 USA. [Ushizima, Daniela] Univ Calif Berkeley, Berkeley Inst Data Sci, Berkeley, CA 94720 USA. [Parkinson, Dilworth] Lawrence Berkeley Natl Lab, Adv Light Source, Berkeley, CA USA. RP Ushizima, D (reprint author), Univ Calif Berkeley, CRD, Berkeley, CA 94720 USA. EM dushizima@lbl.gov; tperciano@lbl.gov; dparkinson@lbl.gov RI Perciano, Talita/I-5977-2012 OI Perciano, Talita/0000-0002-2388-1803 NR 16 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2775 EP 2781 PG 7 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600348 ER PT J AU Devarakonda, R Wei, YX Thornton, M Mayer, B Thornton, P Cook, B AF Devarakonda, Ranjeet Wei, Yaxing Thornton, Michele Mayer, Ben Thornton, Peter Cook, Bob BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Preparing, Storing, and Distributing Multi-dimensional Scientific Data SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE Daymet; ORNL DAAC; Single Pixel Tool; THREDDS AB Data of all sizes, generated by simulation and observation (i.e., instruments and satellites) activities, should be collected, stored, and organized, along with associated tools and research results, so that they are easily discoverable and accessible. Most observational data capture conditions at an exact point in time and are thus not reproducible, therefore it is imperative that initial data be captured and stored correctly the first time. In this paper, we will discuss how NASA's Oak Ridge National Laboratory Distributed Active Archive Center (ORNL DAAC) is preparing, storing, and distributing large volumes of multi-dimensional scientific data using Daily Surface Weather Data and a corresponding Climatological Summaries Dataset (Daymet) as an example. C1 [Devarakonda, Ranjeet; Wei, Yaxing; Thornton, Michele; Mayer, Ben; Thornton, Peter; Cook, Bob] Oak Ridge Natl Lab, Climate Change Sci Inst, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. RP Devarakonda, R (reprint author), Oak Ridge Natl Lab, Climate Change Sci Inst, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM devarakondar@ornl.gov NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2811 EP 2813 PG 3 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600353 ER PT J AU Devarakonda, R Hook, L Killeffer, T Krassovski, M Boden, T Wullschleger, S AF Devarakonda, Ranjeet Hook, Les Killeffer, Terri Krassovski, Misha Boden, Tom Wullschleger, Stan BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Use of a Metadata Documentation and Search Tool for Large Data Volumes: The NGEE Arctic Example SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE Mercury Metadata Search Tool; OME; Metadata; FGDC; NGEE Arctic AB The Online Metadata Editor (OME) is a web-based tool to help document scientific data in a well-structured, popular scientific metadata format. In this paper, we will discuss the newest tool that Oak Ridge National Laboratory (ORNL) has developed to generate, edit, and manage metadata and how it is helping data-intensive science centers and projects, such as the U.S. Department of Energy's Next Generation Ecosystem Experiments (NGEE) in the Arctic to prepare metadata and make their big data produce big science and lead to new discoveries. C1 [Devarakonda, Ranjeet; Hook, Les; Killeffer, Terri; Krassovski, Misha; Boden, Tom; Wullschleger, Stan] Oak Ridge Natl Lab, Climate Change Sci Inst, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. RP Devarakonda, R (reprint author), Oak Ridge Natl Lab, Climate Change Sci Inst, 1 Bethel Valley Rd, Oak Ridge, TN 37831 USA. NR 2 TC 0 Z9 0 U1 2 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2814 EP 2816 PG 3 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600354 ER PT J AU Yin, J Zhao, DF AF Yin, Jian Zhao, Dongfang BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI Data Confidentiality Challenges in Big Data Applications SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel DE Confidentiality; Big Data; Resilience AB In this paper, we address the problem of data confidentiality in big data analytics. In many fields, much useful patterns can be extracted by applying machine learning techniques to big data. However, data confidentiality must be protected. In many scenarios, data confidentiality could well be a prerequisite for data to be shared. We present a scheme to provide provable secure data confidentiality and discuss various techniques to optimize performance of such a system. C1 [Yin, Jian; Zhao, Dongfang] Pacific Northwest Natl Lab, Adv Comp Math & Data Div, Richland, WA 99352 USA. RP Yin, J (reprint author), Pacific Northwest Natl Lab, Adv Comp Math & Data Div, Richland, WA 99352 USA. EM jian.yin@pnnl.gov; dongfang.zhao@pnnl.gov NR 10 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2886 EP 2888 PG 3 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600379 ER PT J AU Zhou, XB Li, TL Wang, K Zhao, DF Sadooghi, I Raicu, I AF Zhou, Xiaobing Li, Tonglin Wang, Ke Zhao, Dongfang Sadooghi, Iman Raicu, Ioan BE Ho, H Ooi, BC Zaki, MJ Hu, XH Haas, L Kumar, V Rachuri, S Yu, SP Hsiao, MHI Li, J Luo, F Pyne, S Ogan, K TI MHT: A Light-weight Scalable Zero-hop MPI Enabled Distributed Key-Value Store SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIG DATA LA English DT Proceedings Paper CT IEEE International Conference on Big Data CY OCT 29-NOV 01, 2015 CL Santa Clara, CA SP IEEE, IEEE Comp Soc, Natl Sci Fdn, CCF, HUAWEI, Springer, ELSEVIER, CISCO, Intel AB In this paper, we propose and implement a keyvalue store that supports MPI while allowing application access at any time without having to declaring in the same MPI communication world. This feature may significantly simplify the application design and allow programmers leverage the power of key-value store in an intuitive way. In our preliminary experiment results captured from a supercomputer at Los Alamos National Laboratory, our prototype shows linear scalability at up to 256 nodes. C1 [Zhou, Xiaobing] Hortonworks, Santa Clara, CA USA. [Li, Tonglin; Zhao, Dongfang; Sadooghi, Iman; Raicu, Ioan] IIT, Chicago, IL USA. [Raicu, Ioan] Argonne Natl Lab, Argonne, IL USA. [Wang, Ke] Intel, Santa Clara, CA USA. RP Zhou, XB (reprint author), Hortonworks, Santa Clara, CA USA. NR 26 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-9925-5 PY 2015 BP 2901 EP 2903 PG 3 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF1KI UT WOS:000380404600384 ER PT S AU Gawande, NA Manzano, JB Tumeo, A Tallent, NR Kerbyson, DJ Hoisie, A AF Gawande, Nitin A. Manzano, Joseph B. Tumeo, Antonino Tallent, Nathan R. Kerbyson, Darren J. Hoisie, Adolfy GP IEEE TI Power and Performance Trade-offs for Space Time Adaptive Processing SO PROCEEDINGS OF THE ASAP2015 2015 IEEE 26TH INTERNATIONAL CONFERENCE ON APPLICATION-SPECIFIC SYSTEMS, ARCHITECTURES AND PROCESSORS SE IEEE International Conference on Application-Specific Systems Architectures and Processors LA English DT Proceedings Paper CT 26th International Conference on Application-Specific Systems, Architectures and Processors (ASAP) CY JUL 27-29, 2015 CL Toronto, CANADA SP IEEE, IEEE Comp Soc AB Power efficiency - performance relative to power is one of the most important concerns when designing RADAR processing systems. This paper analyzes power and performance trade-offs for a typical Space Time Adaptive Processing (STAP) application. We study STAP implementations for CUDA and OpenMP on two architectures, Intel Haswell Core I7-4770TE and NVIDIA Kayla with a GK208 GPU. We analyze the power and performance of STAP's computationally intensive kernels across the two hardware testbeds. We discuss an efficient parallel implementation for the Haswell CPU architecture. We also show the impact and trade-offs of GPU optimization techniques. The GPU architecture is able to process large size data sets without increase in power requirement. The use of shared memory has a significant impact on the power requirement for the GPU. Finally, we show that a balance between the use of shared memory and main memory access leads to an improved performance in a typical STAP application. C1 [Gawande, Nitin A.; Manzano, Joseph B.; Tumeo, Antonino; Tallent, Nathan R.; Kerbyson, Darren J.; Hoisie, Adolfy] Pacific Northwest Natl Lab, Richland, WA 99352 USA. RP Gawande, NA (reprint author), Pacific Northwest Natl Lab, Richland, WA 99352 USA. EM nitin.gawande@pnnl.gov; joseph.manzano@pnnl.gov; antonino.tumeo@pnnl.gov; tallent@pnnl.gov; darren.kerbyson@pnnl.gov; adolfy.hoisie@pnnl.gov NR 15 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1063-6862 BN 978-1-4799-1925-3 J9 IEEE INT CONF ASAP PY 2015 BP 41 EP 48 PG 8 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2FD UT WOS:000380462200007 ER PT S AU Thanh-Hoang, T Shambayati, A Hoffmann, H Chien, AA AF Tung Thanh-Hoang Shambayati, Amirali Hoffmann, Henry Chien, Andrew A. GP IEEE TI Does Arithmetic Logic Dominate Data Movement? A Systematic Comparison of Energy-Efficiency for FFT Accelerators SO PROCEEDINGS OF THE ASAP2015 2015 IEEE 26TH INTERNATIONAL CONFERENCE ON APPLICATION-SPECIFIC SYSTEMS, ARCHITECTURES AND PROCESSORS SE IEEE International Conference on Application-Specific Systems Architectures and Processors LA English DT Proceedings Paper CT 26th International Conference on Application-Specific Systems, Architectures and Processors (ASAP) CY JUL 27-29, 2015 CL Toronto, CANADA SP IEEE, IEEE Comp Soc AB In this paper, we perform a systematic comparison to study the energy cost of varying data formats and data types w.r.t. arithmetic logic and data movement for accelerator-based heterogeneous systems in which both compute-intensive (FFT accelerator) and data-intensive accelerators (DLT accelerator) are added. We explore evaluation for a wide range of design processes (e.g. 32nm bulk-CMOS and projected 7nm FinFET) and memory systems (e.g. DDR3 and HMC). First, our result shows that when varying data formats, the energy costs of using floating point over fixed point are 5.3% (DDR3), 6.2% (HMC) for core and 0.8% (DDR3), 1.5% (HMC) for system in 32nm process. These energy costs are negligible as 0.2% and 0.01% for core and system in 7nm FinFET process in DDR3 memory and slightly increasing in HMC. Second, we identify that the core and system energy of systems using fixed point, 16-bit, FFT accelerator is nearly half of using 32-bit if data movement is also accelerated. This evidence implies that system energy is highly proportional to the amount of moving data when varying data types. C1 [Tung Thanh-Hoang; Shambayati, Amirali; Hoffmann, Henry; Chien, Andrew A.] Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. [Chien, Andrew A.] Argonne Natl Lab, Chicago, IL USA. RP Thanh-Hoang, T (reprint author), Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. EM hoangt@cs.uchicago.edu; achien@cs.uchicago.edu NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1063-6862 BN 978-1-4799-1925-3 J9 IEEE INT CONF ASAP PY 2015 BP 66 EP 67 PG 2 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF2FD UT WOS:000380462200012 ER PT J AU Egarievwe, SU James, RB AF Egarievwe, Stephen U. James, Ralph B. GP ASEE TI Faculty Development and International Collaborations Using Vertical Education Enhancement Model SO 2015 ASEE INTERNATIONAL FORUM LA English DT Proceedings Paper CT ASEE Annual Conference and Exposition CY JUN 14-17, 2015 CL Seattle, WA SP ASEE ID CDZNTE DETECTORS; RAY AB This paper presents the international collaboration and experiences of an effective faculty development initiative based on a vertical education enhancement (VEE) model. The VEE faculty development program was designed to effectively improve performance and moral through life-long learning and training, mentoring, continuous assessments and improvement feedbacks, research and external funding, grant writing, seed money for research, international activities and collaborations, and increased conference participations and journal publications. The VEE model consists of three fundamental interwoven components: curriculum and mentoring; industry, government and community partnerships; and research and funding. The VEE faculty development initiative was successful implemented in a collaborative program between Alabama Agricultural and Mechanical University (AAMU) and Brookhaven National Laboratory (BNL). The results and outcomes for science, technology, engineering and mathematics (STEM) faculty members include increased participation in international education and research collaborations, and increase in the number of students engaged in research and international education activities. C1 [Egarievwe, Stephen U.] Alabama A&M Univ, Coll Engn Technol & Phys Sci, Normal, AL 35762 USA. [Egarievwe, Stephen U.; James, Ralph B.] Brookhaven Natl Lab, Nonproliferat & Natl Secur Dept, Upton, NY 11973 USA. RP Egarievwe, SU (reprint author), Alabama A&M Univ, Coll Engn Technol & Phys Sci, Normal, AL 35762 USA. NR 24 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC ENGINEERING EDUCATION PI WASHINGTON PA 1818 N STREET, NW SUITE 600, WASHINGTON, DC 20036 USA PY 2015 PG 9 WC Education & Educational Research; Education, Scientific Disciplines; Engineering, Multidisciplinary SC Education & Educational Research; Engineering GA BF0XO UT WOS:000379832900023 ER PT B AU Roy, A Ferguson, D AF Roy, Arnab Ferguson, Don GP ASME TI A PHYSICS BASED REACTOR NETWORK MODEL OF A ROTATING DETONATION ENGINE COMBUSTOR SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 4B LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID HYDROGEN; CHAMBER; MIXTURE; WAVE AB A Chemical Reactor Network (CRN) model of a Rotating Detonation Engine (RDE) combustor is presented in this article. Efforts have been made to quantify the exhaust product composition and explore the inherent thermodynamic processes such as detonation, expansion, shock, etc. Parametric studies have been carried out to delineate the effect of major operating and modeling parameters such as variation in equivalence ratio and reaction mechanism on emissions, as well as variation of local thermodynamic states in the RDE. The CRN model is developed based on the two-dimensional unwrapped instantaneous solution of the annular flow field generated from Computational Fluid Dynamics (CFD) simulation. The reactor zones have been identified utilizing the temperature and streamline distribution profile obtained from CFD. Key RDE features such as detonation, shock waves and expansion waves have also been incorporated. The CRN model predictions are compared with CFD solutions implemented using reduced reaction mechanisms. The major species composition at the RDE exhaust compares reasonably well with CFD results. The major objective of this study is towards development of a robust, efficient and preliminary design tool for RDE that - 1) is capable of predicting emissions with reasonable accuracy or at least appropriate trends, 2) can investigate the inherent complicated thermodynamic process and finally, 3) is able to provide a flexible and expandable approach that can be integrated into the combustor design methodology, allowing for a faster design iteration process. C1 [Roy, Arnab; Ferguson, Don] Natl Energy Technol Lab, Dept Energy, Morgantown, WV 26505 USA. RP Roy, A (reprint author), Natl Energy Technol Lab, Dept Energy, Morgantown, WV 26505 USA. NR 40 TC 0 Z9 0 U1 3 U2 3 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5669-7 PY 2015 AR V04BT04A065 PG 10 WC Engineering, Mechanical SC Engineering GA BF1AL UT WOS:000380176400065 ER PT B AU Siw, SC Fradeneck, AD Chyu, MK Alvin, MA AF Siw, Sin Chien Fradeneck, Austen D. Chyu, Minking K. Alvin, Mary Anne GP ASME TI The Effects of Different Pin-Fin Arrays on Heat Transfer and Pressure Loss in a Narrow Channel SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 5B LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst AB This paper describes a detailed experimental investigation of a narrow rectangular channel based on the double-wall cooling concept that can be applicable to a gas turbine airfoil. The channel has dimensions of 63.5 mm by 12.7 mm, corresponding to an aspect ratio of 5:1. The pin diameter, D, is 12.7 mm, and the ratio of pin-height-to-diameter, H/D is 1. The inter-pin spacing is varies in both spanwise and streamwise directions to form two inline, and two staggered pin-fin configurations. The Reynolds number, based on the hydraulic diameter of the pin fin and the mean bulk velocity, ranges from 6,000 to 15,000. The experiments employ a hybrid technique based on transient liquid crystal imaging to obtain the distributions of the local heat transfer coefficient over all of the participating surfaces, including the endwalls and all the pin elements. The heat transfer on both the endwall and pin-fin surfaces revealed similar pattern compared to the typical circular pin-fin array, which were conducted at higher Reynolds number. The total heat transfer enhancement of current pin-fin array is approximately four times higher than that of fully developed smooth channel with low pressure loss, which resulted in much higher thermal performance compared to other pin-fin array as reported in the literature. C1 [Siw, Sin Chien; Fradeneck, Austen D.; Chyu, Minking K.] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15264 USA. [Alvin, Mary Anne] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Siw, SC (reprint author), Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15264 USA. NR 33 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5672-7 PY 2015 AR V05BT13A026 PG 9 WC Engineering, Mechanical SC Engineering GA BF1AJ UT WOS:000380175100079 ER PT B AU Siw, SC Chyu, MK Alvin, MA AF Siw, Sin Chien Chyu, Minking K. Alvin, Mary Anne GP ASME TI Heat Transfer Enhancement and Pressure Loss Characteristics of Zig-Zag Channel with Dimples and Protrusions SO ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 5B LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID 2-PASS SQUARE CHANNELS; SMOOTH; FLOW AB This paper described a detailed experimental study to explore an internal cooling passage that mimic a "zig-zag" pattern. There are four passages connected by 110 turning angle in a periodic fashion, hence the name. Experiments are performed in a scaled-up test channel with a cross-section of 63.5mm by 25.4mm, corresponding to the aspect ratio of 2.5:1. Compared to the conventional straight internal cooling passages, the zig-zag channel with several turns will generate additional secondary vortices while providing longer flow path that allows coolant to remove much more heat load prior to discharge into the hot mainstream. Surface features, (1) dimples, and (2) protrusions are added to the zig-zag channel to further enhance the heat transfer, while contributed to larger wetted area. The experiment utilizes the well-established transient liquid crystal technique to determine the local heat transfer coefficient distribution of the entire zig-zag channel. Protrusions exhibit higher heat transfer enhancement than that of dimples. However, both designs proved to be inferior compared to the ribturbulators. Pressure loss in these test channels is approximately twofold higher than that of straight smooth test channel due to the presence of turns; but the pressure loss is lower than the zigzag channel with rib-turbulators. The result revealed that one advantage of having either protrusions or dimples as these surface elements will resulted in gradual and more uniform increment of heat transfer throughout the entire channel compared to previous test cases. C1 [Siw, Sin Chien; Chyu, Minking K.] Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA. [Alvin, Mary Anne] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. RP Siw, SC (reprint author), Univ Pittsburgh, Dept Mech Engn & Mat Sci, Pittsburgh, PA 15261 USA. NR 28 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5672-7 PY 2015 AR V05BT13A025 PG 11 WC Engineering, Mechanical SC Engineering GA BF1AJ UT WOS:000380175100078 ER PT S AU Woodbridge, DMK Wilson, AT Rintoul, MD Goldstein, RH AF Woodbridge, Diane Myung-Kyung Wilson, Andrew T. Rintoul, Mark D. Goldstein, Richard H. BE Huan, J Miyano, S Shehu, A Hu, X Ma, B Rajasekaran, S Gombar, VK Schapranow, IM Yoo, IH Zhou, JY Chen, B Pai, V Pierce, B TI Time Series Discord Detection in Medical Data using a Parallel Relational Database SO PROCEEDINGS 2015 IEEE INTERNATIONAL CONFERENCE ON BIOINFORMATICS AND BIOMEDICINE SE IEEE International Conference on Bioinformatics and Biomedicine-BIBM LA English DT Proceedings Paper CT IEEE International Conference on Bioinformatics and Biomedicine CY NOV 09-12, 2015 CL Washington, DC SP IEEE, IEEE Comp Soc, Natl Sci Fdn ID MAPREDUCE AB Recent advances in sensor technology have made continuous real-time health monitoring available in both hospital and non-hospital settings. Since data collected from high frequency medical sensors includes a huge amount of data, storing and processing continuous medical data is an emerging big data area. Especially detecting anomaly in real time is important for patients' emergency detection and prevention. A time series discord indicates a subsequence that has the maximum difference to the rest of the time series subsequences, meaning that it has abnormal or unusual data trends. In this study, we implemented two versions of time series discord detection algorithms on a high performance parallel database management system (DBMS) and applied them to 240 Hz waveform data collected from 9,723 patients. The initial brute force version of the discord detection algorithm takes each possible subsequence and calculates a distance to the nearest non-self match to find the biggest discords in time series. For the heuristic version of the algorithm, a combination of an array and a trie structure was applied to order time series data for enhancing time efficiency. The study results showed efficient data loading, decoding and discord searches in a large amount of data, benefiting from the time series discord detection algorithm and the architectural characteristics of the parallel DBMS including data compression, data pipe-lining, and task scheduling. C1 [Woodbridge, Diane Myung-Kyung; Wilson, Andrew T.; Rintoul, Mark D.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Goldstein, Richard H.] RGI Informat, Boston, MA USA. RP Woodbridge, DMK (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM dwoodbr@sandia.gov; atwilso@sandia.gov; mdrinto@sandia.gov; rgoldstein@rgi-informatics.com NR 18 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2156-1125 BN 978-1-4673-6798-1 J9 IEEE INT C BIOINFORM PY 2015 BP 1420 EP 1426 PG 7 WC Computer Science, Interdisciplinary Applications; Mathematical & Computational Biology SC Computer Science; Mathematical & Computational Biology GA BE9EI UT WOS:000377335600242 ER PT B AU Benitz, MA Schmidt, DP Lackner, MA Stewart, GM Jonkman, J Robertson, A AF Benitz, Maija A. Schmidt, David P. Lackner, Matthew A. Stewart, Gordon M. Jonkman, Jason Robertson, Amy GP ASME TI VALIDATION OF HYDRODYNAMIC LOAD MODELS USING CFD FOR THE OC4-DEEPCWIND SEMISUBMERSIBLE SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 9 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div ID PIERCING CIRCULAR-CYLINDER AB Computational fluid dynamics (CFD) simulations were carried out on the oC4-DeepCwind semisubmersible to obtain a better understanding of how to set hydrodynamic coefficients for the structure when using an engineering tool such as FAST to model the system. This study focussed on the drag behavior and the effects of the free surface, free ends and multimember arrangement of the semisubmersible structure. These effects are investigated through code-to-code comparisons and flow visualizations. The implications on mean load predictions from engineering tools are addressed. This study suggests that a variety of geometric factors should be considered when selecting drag coefficients. Furthermore, CFD simulations demonstrate large time-varying loads caused by vortex shedding that FAST's hydrodynamic module, HydroDyn, does not model. The implications of these oscillatory loads on the fatigue life needs to be addressed. C1 [Benitz, Maija A.; Schmidt, David P.; Lackner, Matthew A.; Stewart, Gordon M.] Univ Massachusetts, Dept Mech & Ind Engn, 160 Governors Dr, Amherst, MA 01003 USA. [Jonkman, Jason; Robertson, Amy] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Benitz, MA (reprint author), Univ Massachusetts, Dept Mech & Ind Engn, 160 Governors Dr, Amherst, MA 01003 USA. EM mbenitz@engin.umass.edu NR 19 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5657-4 PY 2015 AR V009T09A037 PG 12 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF0XK UT WOS:000379793600037 ER PT B AU Chan, GKY Sclavounos, PD Jonkman, J Hayman, G AF Chan, Godine Kok Yan Sclavounos, Paul D. Jonkman, Jason Hayman, Gregory GP ASME TI COMPUTATION OF NONLINEAR HYDRODYNAMIC LOADS ON FLOATING WIND TURBINES USING FLUID-IMPULSE THEORY SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 9 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div DE Wave-structure interactions; Fluid Impulse Theory ID WAVES AB A hydrodynamics computer module was developed to evaluate the linear and nonlinear loads on floating wind turbines using a new fluid-impulse formulation for coupling with the FAST program. The new formulation allows linear and nonlinear loads on floating bodies to be computed in the time domain. It also avoids the computationally intensive evaluation of temporal and spatial gradients of the velocity potential in the Bernoulli equation and the discretization of the nonlinear free surface. The new hydrodynamics module computes linear and nonlinear loads including hydrostatic, Froude-Krylov, radiation and diffraction, as well as nonlinear effects known to cause ringing, springing, and slow-drift loads directly in the time domain. The time-domain Green function is used to solve the linear and nonlinear free-surface problems and efficient methods are derived for its computation. The body instantaneous wetted surface is approximated by a panel mesh and the discretization of the free surface is circumvented by using the Green function. The evaluation of the nonlinear loads is based on explicit expressions derived by the fluid-impulse theory, which can be computed efficiently. Computations are presented of the linear and nonlinear loads on the MIT/NREL tension-leg platform. Comparisons were carried out with frequency-domain linear and second order methods. Emphasis was placed on modeling accuracy of the magnitude of nonlinear low- and high frequency wave loads in a sea state. Although fluid-impulse theory is applied to floating wind turbines in this paper, the theory is applicable to other offshore platforms as well. C1 [Chan, Godine Kok Yan; Sclavounos, Paul D.] MIT, Cambridge, MA 02139 USA. [Jonkman, Jason; Hayman, Gregory] NREL, Golden, CO 80401 USA. RP Chan, GKY (reprint author), MIT, Cambridge, MA 02139 USA. NR 15 TC 0 Z9 0 U1 2 U2 2 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5657-4 PY 2015 AR V009T09A038 PG 9 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF0XK UT WOS:000379793600038 ER PT B AU Coe, RG Bull, DL AF Coe, Ryan G. Bull, Diana L. GP ASME TI SENSITIVITY OF A WAVE ENERGY CONVERTER DYNAMICS MODEL TO NONLINEAR HYDROSTATIC MODELS SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 9 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div AB A three dimensional time-domain model, based on Cummins equation, has been developed for an axisymmetric point absorbing wave energy converter (WEC) with an irregular cross section. This model incorporates a number of nonlinearities to accurately account for the dynamics of the device: hydrostatic restoring, motion constraints, saturation of the power take-off force, and kinematic nonlinearities. Here, an interpolation model of the hydrostatic restoring reaction is developed and compared with a surface integral based method. The effects of these nonlinear hydrostatic models on device dynamics are explored by comparing predictions against those of a linear model. For the studied WEC, the interpolation model offers a large improvement over a linear model and is roughly two orders-of magnitude less computationally expensive than the surface integral based method. C1 [Coe, Ryan G.; Bull, Diana L.] Sandia Natl Labs, Water Power Technol Dept, Albuquerque, NM 87185 USA. RP Coe, RG (reprint author), Sandia Natl Labs, Water Power Technol Dept, Albuquerque, NM 87185 USA. EM Ryan.Coe@sandia.gov; Diana.Bull@sandia.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5657-4 PY 2015 AR V009T09A030 PG 9 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF0XK UT WOS:000379793600030 ER PT B AU Lawson, M Garzon, BB Wendt, F Yu, YH Michelen, C AF Lawson, Michael Garzon, Braulio Barahona Wendt, Fabian Yu, Yi-Hsiang Michelen, Carlos GP ASME TI COER HYDRODYNAMIC MODELING COMPETITION: MODELING THE DYNAMIC RESPONSE OF A FLOATING BODY USING THE WEC-SIM AND FAST SIMULATION TOOLS SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 9 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div AB The Center for Ocean Energy Research (COER) at the University of Maynooth in Ireland organized a hydrodynamic modeling competition in conjunction with OMAE2015. Researchers were challenged to predict the dynamic response of a floating rigid-body device that was experimentally tested in a series of wave-tank tests. Specifically, COER set up a blind competition, where the device specifications and test conditions were released, but the experimental results were kept private until all competition participants submitted their numerical simulation results. The National Renewable Energy Laboratory and Sandia National Laboratories entered the competition and modeled the experimental device using both the WEC-Sim and FAST numerical modeling tools. This paper describes the numerical methods used to model the device and presents the numerical modeling results. The numerical results are also compared to the experimental results provided by COER at the completion of the competition. C1 [Lawson, Michael; Garzon, Braulio Barahona; Wendt, Fabian; Yu, Yi-Hsiang] Natl Renewable Energy Lab, Golden, CO USA. [Michelen, Carlos] Sandia Natl Labs, Albuquerque, NM USA. RP Lawson, M (reprint author), Natl Renewable Energy Lab, Golden, CO USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5657-4 PY 2015 AR V009T09A005 PG 9 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF0XK UT WOS:000379793600005 ER PT B AU So, R Simmons, A Brekken, T Ruehl, K Michelen, C AF So, Ratanak Simmons, Asher Brekken, Ted Ruehl, Kelley Michelen, Carlos GP ASME TI DEVELOPMENT OF PTO-SIM: A POWER PERFORMANCE MODULE FOR THE OPEN-SOURCE WAVE ENERGY CONVERTER CODE WEC-SIM SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 9 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div AB WEC-Sim (Wave Energy Converter-SIMulator) is an open source wave energy converter (WEC) code capable of simulating WECs of arbitrary device geometry subject to operational waves. The code is developed in MATLAB/Simulink using the multi-body dynamics solver SimMechanics, and relies on Boundary Element Method (BEM) codes to obtain hydrodynamic coefficients such as added mass, radiation damping, and wave excitation. WEC-Sim Version 1.0, released in Summer 2014, models WECs as a combination of rigid bodies, joints, linear power take-offs (PTOs), and mooring systems. This paper outlines the development of PTO-Sim (Power Take Off-SIMulator), the WEC-Sim module responsible for accurately modeling a WEC's conversion of mechanical power to electrical power through its PTO system. PTO-Sim consists of a Simulink library of PTO component blocks that can be linked together to model different PTO systems. Two different applications of PTO-Sim will be given in this paper: a hydraulic power take-off system model, and a direct drive power take-off system model. C1 [So, Ratanak; Simmons, Asher; Brekken, Ted] Oregon State Univ, Sch Elect Engn & Comp Sci, Corvallis, OR 97331 USA. [Ruehl, Kelley; Michelen, Carlos] Sandia Natl Labs, Water Power Dept, Albuquerque, NM USA. RP Ruehl, K (reprint author), Sandia Natl Labs, Water Power Dept, Albuquerque, NM USA. EM kelley.ruehl@sandia.gov NR 14 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5657-4 PY 2015 AR V009T09A032 PG 10 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF0XK UT WOS:000379793600032 ER PT B AU Tom, N Lawson, M Yu, YH AF Tom, Nathan Lawson, Michael Yu, Yi-Hsiang GP ASME TI DEMONSTRATION OF THE RECENT ADDITIONS IN MODELING CAPABILITIES FOR THE WEC-SIM WAVE ENERGY CONVERTER DESIGN TOOL SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 9 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div ID FORCES AB WEC-Sim is a midfidelity numerical tool for modeling wave energy conversion devices. The code uses the MATLAB SimMechanics package to solve multibody dynamics and models wave interactions using hydrodynamic coefficients derived from frequency domain boundary element methods. This paper presents the new modeling features introduced in the latest release of WEC-Sim. The first feature discussed is the conversion of the fluid memory kernel to a state-space approximation that provides significant gains in computational speed. The benefit of the state-space calculation becomes even greater after the hydrodynamic body-to-body coefficients are introduced as the number of interactions increases exponentially with the number of floating bodies. The final feature discussed is the capability to add Morison elements to provide additional hydrodynamic damping and inertia. This is generally used as a tuning feature, because performance is highly dependent on the chosen coefficients. In this paper, a review of the hydrodynamic theory for each of the features is provided and successful implementation is verified using test cases. C1 [Tom, Nathan; Lawson, Michael; Yu, Yi-Hsiang] Natl Renewable Energy Lab, Golden, CO USA. RP Tom, N (reprint author), Natl Renewable Energy Lab, Golden, CO USA. EM nathan.tom@nrel.gov; michael.lawson@nrel.gov; yi-hsiang.yu@nrel.gov NR 23 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5657-4 PY 2015 AR V009T09A035 PG 11 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF0XK UT WOS:000379793600035 ER PT B AU Yu, YH Van Rij, J Coe, R Lawson, M AF Yu, Yi-Hsiang Van Rij, Jennifer Coe, Ryan Lawson, Mike GP ASME TI PRELIMINARY WAVE ENERGY CONVERTERS EXTREME LOAD ANALYSIS SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 9 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div DE Wave energy; extreme condition modeling; design load; time-domain numerical model; computational fluid dynamics simulation AB Wave energy converter (WEC) devices are designed to sustain the wave-induced loads that they experience during both operational and survival sea states. The extreme values of these forces are often a key cost driver for WEC designs. These extreme loads must be carefully examined during the device design process, and the development of a specific extreme condition modeling method is essential. In this paper, the key findings and recommendations from the extreme conditions modeling workshop hosted by Sandia National Laboratories and the National Renewable Energy Laboratory are reviewed. Next, a study on the development and application of a modeling approach for predicting WEC extreme design load is described. The approach includes midfidelity Monte-Carlo-type time domain simulations to determine the sea state in which extreme loads occur. In addition, computational fluid dynamics simulations are employed to examine the nonlinear wave and floating-device-interaction-induced extreme loads. Finally, a discussion on the key areas that need further investigation to improve the extreme condition modeling methodology for WECs is presented. C1 [Yu, Yi-Hsiang; Van Rij, Jennifer; Lawson, Mike] Natl Renewable Energy Lab, Golden, CO USA. [Coe, Ryan] Sandia Natl Labs, Albuquerque, NM USA. RP Yu, YH (reprint author), Natl Renewable Energy Lab, Golden, CO USA. EM Yi-Hsiang.Yu@nrel.gov; Jennifer.VanRij@nrel.gov; rcoe@sandia.gov; Michael.Lawson@nrel.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5657-4 PY 2015 AR V009T09A026 PG 9 WC Energy & Fuels; Engineering, Mechanical SC Energy & Fuels; Engineering GA BF0XK UT WOS:000379793600026 ER PT S AU Gupta, S Zhou, HY AF Gupta, Saurabh Zhou, Huiyang GP IEEE TI Spatial Locality-Aware Cache Partitioning for Effective Cache Sharing SO 2015 44TH INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING (ICPP) SE Proceedings of the International Conference on Parallel Processing LA English DT Proceedings Paper CT 44th Annual International Conference on Parallel Processing Workshops (ICPPW) CY SEP 01-04, 2015 CL Beijing, PEOPLES R CHINA SP IEEE Comp Soc, Int Conf Parallel Proc, Tsinghua Univ, Int Assoc Comp & Commun, Baidu, Tsinghua Natl Lab Informat Sci & Technol DE shared last level cache; cache partitioning; spatial locality; cache management; high bandwidth memory AB In modern multi-core processors, last-level caches (LLCs) are typically shared among multiple cores. Previous works have shown that such sharing is beneficial as different workloads have different needs for cache capacity, and logical partitioning of capacity can improve system performance. However, what is missing in previous works on partitioning shared LLCs is that the heterogeneity in spatial locality among workloads has not been explored. In other words, all the cores use the same block/line size in shared LLCs. In this work, we highlight that exploiting spatial locality enables much more effective cache sharing. The fundamental reason is that for many memory intensive workloads, their cache capacity requirements can be drastically reduced when a large block size is employed, therefore they can effectively donate more capacity to other workloads. To leverage spatial locality for cache partitioning effectively, we first propose a simple yet effective mechanism to measure both spatial and temporal locality at run-time. The locality information is then used to determine both the proper block size and the capacity assigned to each workload. Our experiments show that our Spatial Locality-aware Cache Partitioning (SLCP) significantly outperforms the previous works. We also present several case studies that dissect the effectiveness of SLCP compared to the existing approaches. C1 [Gupta, Saurabh] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Zhou, Huiyang] North Carolina State Univ, Raleigh, NC USA. RP Gupta, S (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA. EM guptas1@ornl.gov; hzhou@ncsu.edu NR 30 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0190-3918 BN 978-1-4673-7588-7 J9 PROC INT CONF PARAL PY 2015 BP 150 EP 159 DI 10.1109/ICPP.2015.24 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0OL UT WOS:000379202700016 ER PT S AU Nelson, T Rivera, A Balaprakash, P Hall, M Hovland, PD Jessup, E Norris, B AF Nelson, Thomas Rivera, Axel Balaprakash, Prasanna Hall, Mary Hovland, Paul D. Jessup, Elizabeth Norris, Boyana GP IEEE TI Generating Efficient Tensor Contractions for GPUs SO 2015 44TH INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING (ICPP) SE Proceedings of the International Conference on Parallel Processing LA English DT Proceedings Paper CT 44th Annual International Conference on Parallel Processing Workshops (ICPPW) CY SEP 01-04, 2015 CL Beijing, PEOPLES R CHINA SP IEEE Comp Soc, Int Conf Parallel Proc, Tsinghua Univ, Int Assoc Comp & Commun, Baidu, Tsinghua Natl Lab Informat Sci & Technol DE tensor contraction; autotuning; GPUs ID ELECTRONIC-STRUCTURE CALCULATIONS; PERFORMANCE; EXPRESSIONS; SEARCH; MODELS AB Many scientific and numerical applications, including quantum chemistry modeling and fluid dynamics simulation, require tensor product and tensor contraction evaluation. Tensor computations are characterized by arrays with numerous dimensions, inherent parallelism, moderate data reuse and many degrees of freedom in the order in which to perform the computation. The best-performing implementation is heavily dependent on the tensor dimensionality and the target architecture. In this paper, we map tensor computations to GPUs, starting with a high-level tensor input language and producing efficient CUDA code as output. Our approach is to combine tensor-specific mathematical transformations with a GPU decision algorithm, machine learning and autotuning of a large parameter space. Generated code shows significant performance gains over sequential and OpenMP parallel code, and a comparison with OpenACC shows the importance of autotuning and other optimizations in our framework for achieving efficient results. C1 [Nelson, Thomas; Jessup, Elizabeth] Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA. [Rivera, Axel; Hall, Mary] Univ Utah, Sch Comp, Salt Lake City, UT 84112 USA. [Balaprakash, Prasanna; Hovland, Paul D.] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. [Norris, Boyana] Univ Oregon, Dept Comp & Informat Sci, Eugene, OR 97403 USA. RP Nelson, T (reprint author), Univ Colorado, Dept Comp Sci, Boulder, CO 80309 USA. EM thomas.nelson@colorado.edu; elriv@cs.utah.edu; pbalapra@mcs.anl.gov; mhall@cs.utah.edu; hovland@mcs.anl.gov; jessup@cs.colorado.edu; norris@cs.uoregon.edu NR 33 TC 1 Z9 1 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 0190-3918 BN 978-1-4673-7588-7 J9 PROC INT CONF PARAL PY 2015 BP 969 EP 978 DI 10.1109/ICPP.2015.106 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0OL UT WOS:000379202700098 ER PT J AU Ruiz, S Hernandez, B AF Ruiz, Sergio Hernandez, Benjamin BE Sidorov, G Haro, SNG Lagunas, OP Alcantara, OH Figueroa, GA TI A Parallel Solver for Markov Decision Process in Crowd Simulations SO 2015 FOURTEENTH MEXICAN INTERNATIONAL CONFERENCE ON ARTIFICIAL INTELLIGENCE (MICAI) LA English DT Proceedings Paper CT 14th Mexican International Conference on Artificial Intelligence (MICAI) CY OCT 25-31, 2015 CL Polytechn Univ Morelos, Cuernavaca, MEXICO SP Mexican Soc Artificial Intelligence, Instituto Investigaciones Electricas, Centro Nacl Investigac & Desarrollo Tecnologico, Univ Politecnica Estado Morelos, Tecnologico Monterrey Campus Cuernavaca, Centro Investigac Computac Instituto Politecnico Nacl, Unidad Profes Interdisciplinaria Ingn & Tecnologias Avanzadas Instituto Politecnico Nacl, Univ Autonoma Mexico Azcapotzalco, Univ Nacl Autonoma Mexico HO Polytechn Univ Morelos DE Markov Decision Process; GPU; CUDA; Thrust; Crowd Simulation; Real-time AB Classic path finding algorithms are not adequate in real world path planning, where environment information is incomplete or dynamic and Markov Decision Processes have been used as an alternative. The problem with the MDP formalism is that its state space grows exponentially with the number of domain variables, and its inference methods grow with the number of available actions. To overcome this issue, we formulate a MDP solver in terms of matrix multiplications, based on the Value Iteration algorithm; thus we can take advantage of the graphic processor units (GPUs) to produce interactively obstacle-free paths in the form of an Optimal Policy. We also propose a hexagonal grid navigation space, that reduces the cardinality of the MDP state set. We present a performance analysis of our technique using embedded systems, desktop CPU and GPUs and its application in crowd simulation. Our GPU algorithm presents 90x speed up in desktop platforms, and 30x speed up in embedded systems in contrast with its CPU multi-threaded version. C1 [Ruiz, Sergio] CCM, Tecnol Monterrey, Dept Comp Sci, Mexico City, DF, Mexico. [Hernandez, Benjamin] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN USA. RP Ruiz, S (reprint author), CCM, Tecnol Monterrey, Dept Comp Sci, Mexico City, DF, Mexico. EM sergio.ruiz.loza@itesm.mx; hernandezarb@ornl.gov NR 23 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-5090-0323-5 PY 2015 BP 107 EP 116 DI 10.1109/MICAI.2015.23 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Theory & Methods SC Computer Science GA BF0QY UT WOS:000379341600017 ER PT S AU Chinthavali, M Onar, OC Campbell, SL Tolbert, LM AF Chinthavali, M. Onar, O. C. Campbell, S. L. Tolbert, L. M. GP IEEE TI Isolated Wired and Wireless Battery Charger with Integrated Boost Converter for PEV Applications SO 2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) SE IEEE Energy Conversion Congress and Exposition LA English DT Proceedings Paper CT IEEE Energy Conversion Congress and Exposition CY SEP 20-24, 2015 CL Montreal, CANADA SP IEEE, IEEE Power Elect Soc, IEEE Ind Applicat Soc DE wireless power transfer; on-board charger; integrated charger; boost converter; PEV charger ID ELECTRIC VEHICLES AB Integrated charger topologies that have been researched so far are with the dc-dc converters and the charging functionality usually have no isolation in the system. Isolation is an important feature that is required for user interface systems that have grid connections and therefore is a major limitation that needs to be addressed along with the integrated functionality. This study features a unique way of combining the wired and wireless charging functionalities with vehicle side boost converter integration and maintaining the isolation to provide the best solution to the plug-in electric vehicle (PEV) users. The new performance of the proposed architecture is presented for wired and wireless charging options at different power levels. C1 [Chinthavali, M.; Onar, O. C.; Campbell, S. L.; Tolbert, L. M.] Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, POB 2008, Oak Ridge, TN 37831 USA. RP Chinthavali, M (reprint author), Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, POB 2008, Oak Ridge, TN 37831 USA. EM chinthavalim@ornl.gov; onaroc@ornl.gov; campbellsl@ornl.gov; tolbertlm@ornl.gov OI Tolbert, Leon/0000-0002-7285-609X NR 14 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-3721 BN 978-1-4673-7151-3 J9 IEEE ENER CONV PY 2015 BP 607 EP 614 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF0II UT WOS:000378882900085 ER PT S AU Xiao, BL Starke, M Liu, GD Ollis, B Irminger, P Dimitrovski, A Prabakar, K Dowling, K Xu, Y AF Xiao, Bailu Starke, Michael Liu, Guodong Ollis, Ben Irminger, Philip Dimitrovski, Aleksandar Prabakar, Kumaraguru Dowling, Kevin Xu, Yan GP IEEE TI Development of Hardware-in-the-loop Microgrid Testbed SO 2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) SE IEEE Energy Conversion Congress and Exposition LA English DT Proceedings Paper CT IEEE Energy Conversion Congress and Exposition CY SEP 20-24, 2015 CL Montreal, CANADA SP IEEE, IEEE Power Elect Soc, IEEE Ind Applicat Soc ID POWER; SIMULATION; SYSTEM AB A hardware-in-the-loop (HIL) microgrid testbed for the evaluation and assessment of microgrid operation and control system has been presented in this paper. The HIL testbed is composed of a real-time digital simulator (RTDS) for modeling of the microgrid, multiple NI CompactRlOs for device level control, a prototype microgrid energy management system (MicroEMS), and a relay protection system. The applied communication-assisted hybrid control system has been also discussed. Results of function testing of HIL controller, communication, and the relay protection system are presented to show the effectiveness of the proposed HIL microgrid testbed. C1 [Xiao, Bailu; Starke, Michael; Liu, Guodong; Ollis, Ben; Irminger, Philip; Dimitrovski, Aleksandar] Oak Ridge Natl Lab, Power & Energy Syst Grp, Oak Ridge, TN 37831 USA. [Prabakar, Kumaraguru; Dowling, Kevin; Xu, Yan] Univ Tennessee, Dept Elect Engn & Comp Sci, Knoxville, TN USA. RP Xiao, BL (reprint author), Oak Ridge Natl Lab, Power & Energy Syst Grp, Oak Ridge, TN 37831 USA. NR 18 TC 3 Z9 3 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-3721 BN 978-1-4673-7151-3 J9 IEEE ENER CONV PY 2015 BP 1196 EP 1202 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF0II UT WOS:000378882901076 ER PT S AU Hasan, I Husain, T Uddin, MW Sozer, Y Husain, I Muljadi, E AF Hasan, Iftekhar Husain, Tausif Uddin, Md Wasi Sozer, Yilmaz Husain, Iqbal Muljadi, Eduard GP IEEE TI Analytical Modeling of a Novel Transverse Flux Machine for Direct Drive Wind Turbine Applications SO 2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) SE IEEE Energy Conversion Congress and Exposition LA English DT Proceedings Paper CT IEEE Energy Conversion Congress and Exposition CY SEP 20-24, 2015 CL Montreal, CANADA SP IEEE, IEEE Power Elect Soc, IEEE Ind Applicat Soc DE Transverse flux machine (TFM); nonlinear; magnetic equivalent circuit (MEC); magnetic saturation; flux concentrating; finite element analysis (FEA) ID MAGNETIC-CIRCUIT ANALYSIS; RELUCTANCE MACHINE; DESIGN; MOTOR AB This paper presents a nonlinear analytical model of a novel double sided flux concentrating Transverse Flux Machine (TFM) based on the Magnetic Equivalent Circuit (MEC) model. The analytical model uses a series-parallel combination of flux tubes to predict the flux paths through different parts of the machine including air gaps, permanent magnets (PM), stator, and rotor. The two-dimensional MEC model approximates the complex three-dimensional flux paths of the TFM and includes the effects of magnetic saturation. The model is capable of adapting to any geometry which makes it a good alternative for evaluating prospective designs of TFM as compared to finite element solvers which are numerically intensive and require more computation time. A single phase, 1 kW, 400 rpm machine is analytically modeled and its resulting flux distribution, no-load EMF and torque, verified with Finite Element Analysis (FEA). The results are found to be in agreement with less than 5% error, while reducing the computation time by 25 times. C1 [Hasan, Iftekhar; Husain, Tausif; Uddin, Md Wasi; Sozer, Yilmaz] Univ Akron, ECE Dept, Akron, OH 44325 USA. [Husain, Iqbal] N Carolina State Univ, ECE Dept, Raleigh, NC USA. [Muljadi, Eduard] Natl Renewable Energy Lab, Golden, CO USA. RP Hasan, I (reprint author), Univ Akron, ECE Dept, Akron, OH 44325 USA. NR 23 TC 1 Z9 1 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-3721 BN 978-1-4673-7151-3 J9 IEEE ENER CONV PY 2015 BP 2161 EP 2168 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF0II UT WOS:000378882902071 ER PT S AU Liang, ZX AF Liang, Zhenxian GP IEEE TI Integrated Double Sided Cooling Packaging of Planar SiC Power Modules SO 2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) SE IEEE Energy Conversion Congress and Exposition LA English DT Proceedings Paper CT IEEE Energy Conversion Congress and Exposition CY SEP 20-24, 2015 CL Montreal, CANADA SP IEEE, IEEE Power Elect Soc, IEEE Ind Applicat Soc DE Integrated packaging; SIC power module; high density; double sided cooling; direct cooling; 3-D packaging AB A packaging scheme for the integrated power electronics building block is developed, that incorporates double sided direct cooling (forced air or liquid) into assembly comprised of multiple planar packaged power silicon carbide (SiC) phase leg modules. The power modules feature three-dimensional (3-D) planar electrical interconnection and dual exposed cooling surfaces through bonding of power dies between two sandwiched substrates with attached pin-fin cold plates. The unique coolant manifolds, providing matched cooling passages to the modules, were designed and fabricated by using newly developed additive manufacture (three dimensional, 3-D printing) technology. By combining these packaging attributes, advanced SiC power converters integrating both functions of electrical interconnection and cooling that achieve 75% reduction in parasitic electrical impedance and 40% reduction in thermal resistance have been produced. The advantages of this SiC packaging scheme in cost-effectiveness, power conversion efficiency, power density of power electronics systems in modern electric drive vehicles are demonstrated by evaluating the 100A, 1200V SiC half-bridge power module assemblies. C1 [Liang, Zhenxian] Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Oak Ridge, TN USA. RP Liang, ZX (reprint author), Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Oak Ridge, TN USA. EM liangz@ornl.gov OI Liang, Zhenxian/0000-0002-2811-0944 NR 9 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-3721 BN 978-1-4673-7151-3 J9 IEEE ENER CONV PY 2015 BP 4907 EP 4912 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF0II UT WOS:000378882905034 ER PT S AU Husain, T Sozer, Y Husain, I Muljadi, E AF Husain, Tausif Sozer, Yilmaz Husain, Iqbal Muljadi, Eduard GP IEEE TI Design of a Modular E-Core Flux Concentrating Axial Flux Machine SO 2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) SE IEEE Energy Conversion Congress and Exposition LA English DT Proceedings Paper CT IEEE Energy Conversion Congress and Exposition CY SEP 20-24, 2015 CL Montreal, CANADA SP IEEE, IEEE Power Elect Soc, IEEE Ind Applicat Soc ID BRUSHLESS AC MACHINE; GENERATORS AB In this paper a novel E-Core axial flux machine is proposed. The machine has a double stator-single rotor configuration with flux concentrating ferrite magnets, and pole windings across each leg of an E-Core stator. E-Core stators with the proposed flux-concentrating rotor arrangement result in better magnet utilization and higher torque density. The machine also has a modular structure facilitating simpler construction. This paper presents a single phase and a three-phase version of the E-Core machine. Case study for a 1.1 kW, 400 rpm machine for both the single phase and three-phase axial flux machine is presented. The results are verified through 3D finite element analysis. C1 [Husain, Tausif; Sozer, Yilmaz] Univ Akron, ECE Dept, Akron, OH 44325 USA. [Husain, Iqbal] N Carolina State Univ, ECE Dept, Raleigh, NC 27695 USA. [Muljadi, Eduard] Natl Renewable Energy Lab, Golden, CO USA. RP Husain, T (reprint author), Univ Akron, ECE Dept, Akron, OH 44325 USA. NR 22 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-3721 BN 978-1-4673-7151-3 J9 IEEE ENER CONV PY 2015 BP 5203 EP 5210 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF0II UT WOS:000378882905074 ER PT S AU Hsu, P Muljadi, E Wu, ZP Gao, WZ AF Hsu, Ping Muljadi, Eduard Wu, Ziping Gao, Wenzhong GP IEEE TI Voltage Regulation using a Permanent Magnet Synchronous Condenser with a Series Compensator SO 2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) SE IEEE Energy Conversion Congress and Exposition LA English DT Proceedings Paper CT IEEE Energy Conversion Congress and Exposition CY SEP 20-24, 2015 CL Montreal, CANADA SP IEEE, IEEE Power Elect Soc, IEEE Ind Applicat Soc DE Synchronous condenser; permanent magnet synchronous machine; reactive power control; voltage stabilization AB Wind power plant (WPP) is often operated at unity power factor, and the utility host where the WPP connected prefers to regulate the voltage. While this may not be an issue in a stiff grid, the connection to a weak grid can be problematic. This paper explores the advantages of having voltage regulation capability via reactive power control. Another issue in wind power generation is that not all turbines are able to control its reactive power due to technical reason or contractual obligations. A synchronous condenser (SC) using a permanent magnet synchronous generator (PMSG) is proposed for providing necessary reactive power for regulating voltage at a weak grid connection. A PMSG has the advantage of higher efficiency and reliability. Because of its lack of a field winding, a PMSG is typically controlled by a full-power converter, which can be costly. In the proposed system, the reactive power of the SC is controlled by a serially connected compensator operating in a closed-loop configuration. The compensator also damps the PMSG's tendency to oscillate. The compensator's VA rating is only a fraction of the rating of the SC and the PMSG. In this initial investigation, the proposed scheme is shown to be effective by computer simulations. C1 [Hsu, Ping] San Jose State Univ, San Jose, CA 95192 USA. [Muljadi, Eduard] Natl Renewable Energy Lab, Golden, CO USA. [Wu, Ziping; Gao, Wenzhong] Univ Denver, Denver, CO USA. RP Hsu, P (reprint author), San Jose State Univ, San Jose, CA 95192 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-3721 BN 978-1-4673-7151-3 J9 IEEE ENER CONV PY 2015 BP 5851 EP 5856 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF0II UT WOS:000378882906026 ER PT S AU Su, GJ Tang, LX AF Su, Gui-Jia Tang, Lixin GP IEEE TI An Integrated Onboard Charger and Accessory Power Converter Using WBG Devices SO 2015 IEEE ENERGY CONVERSION CONGRESS AND EXPOSITION (ECCE) SE IEEE Energy Conversion Congress and Exposition LA English DT Proceedings Paper CT IEEE Energy Conversion Congress and Exposition CY SEP 20-24, 2015 CL Montreal, CANADA SP IEEE, IEEE Power Elect Soc, IEEE Ind Applicat Soc ID BATTERY CHARGER; ELECTRIC VEHICLES; INVERTER AB Integrating the function of onboard battery charging into the traction drive system and accessory dc-dc converter in plug-in electric vehicles (PEVs) is shown to significantly reduce the cost and increase the power density of onboard chargers due to a substantially reduced component count. Replacing silicon (Si) based power devices with wide-band-gap (WBG) devices can further increase the power density and efficiency and lower the cost as WBG device technology matures and production volume increases. This paper presents a bidirectional integrated onboard charger (OBC) and accessory power converter using silicon carbide (SiC) MOSFETs and Schottky Barrier Diodes (SBDs). The galvanically isolated integrated OBC is formed by using the segmented traction drive system of a PEV as the frond converter and a phase shifted dual-active full-bridge converter (PHDAFBC) that is comprised of the transformer and high voltage converter of the 14 V accessory dc-dc converter and an additional full-bridge converter. Experimental results for a 6.8 kW OBC prototype that is implemented on a 90 kW segmented SiC traction inverter and a 6.8 kW SiC PHDAFBC is included. C1 [Su, Gui-Jia; Tang, Lixin] Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Knoxville, TN USA. RP Su, GJ (reprint author), Oak Ridge Natl Lab, Power Elect & Elect Machinery Grp, Knoxville, TN USA. EM sugj@ornl.gov NR 17 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2329-3721 BN 978-1-4673-7151-3 J9 IEEE ENER CONV PY 2015 BP 6306 EP 6313 PG 8 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BF0II UT WOS:000378882906089 ER PT S AU Zhang, J Donofrio, D Shalf, J Kandemir, M Jung, M AF Zhang, Jie Donofrio, David Shalf, John Kandemir, Mahmut Jung, Myoungsoo GP IEEE TI NVMMU: A Non-Volatile Memory Management Unit for Heterogeneous GPU-SSD Architectures SO 2015 INTERNATIONAL CONFERENCE ON PARALLEL ARCHITECTURE AND COMPILATION (PACT) SE International Conference on Parallel Architectures and Compilation Techniques LA English DT Proceedings Paper CT 24th International Conference on Parallel Architecture and Compilation (PACT) CY OCT 18-21, 2015 CL San Francisco, CA SP IEEE Comp Soc, ACM, NSF, IFIP, Berkeley Lab, Oracle, ACM, SIGARCH DE GPU; SSD; DMA; OS; NVM AB Thanks to massive parallelism in modern Graphics Processing Units (GPUs), emerging data processing applications in GPU computing exhibit ten-fold speedups compared to CPU-only systems. However, this GPU-based acceleration is limited in many cases by the significant data movement overheads and inefficient memory management for host-side storage accesses. To address these shortcomings, this paper proposes a non-volatile memory management unit (NVMMU) that reduces the file data movement overheads by directly connecting the Solid State Disk (SSD) to the GPU. We implemented our proposed NVMMU on a real hardware with commercially available GPU and SSD devices by considering different types of storage interfaces and configurations. In this work, NVMMU unifies two discrete software stacks (one for the SSD and other for the GPU) in two major ways. While a new interface provided by our NVMMU directly forwards file data between the GPU runtime library and the I/O runtime library, it supports non-volatile direct memory access (NDMA) that pairs those GPU and SSD devices via physically shared system memory blocks. This unification in turn can eliminate unnecessary user/kernel-mode switching, improve memory management, and remove data copy overheads. Our evaluation results demonstrate that NVMMU can reduce the overheads of file data movement by 95% on average, improving overall system performance by 78% compared to a conventional IOMMU approach. C1 [Zhang, Jie; Jung, Myoungsoo] Yonsei Univ, Sch Integrated Technol, Yonsei Inst Convergence Technol, Seoul 120749, South Korea. [Kandemir, Mahmut] Penn State Univ, Dept EECS, University Pk, PA 16802 USA. [Donofrio, David; Shalf, John] Lawrence Berkeley Natl Lab, Comp Architecture Lab, Berkeley, CA 94720 USA. RP Jung, M (reprint author), Yonsei Univ, Sch Integrated Technol, Yonsei Inst Convergence Technol, Seoul 120749, South Korea. EM jie@yonsei.ac.kr; ddonofrio@lbl.gov; jshalf@lbl.gov; kandemir@cse.psu.edu; m.jung@yonsei.ac.kr NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 1089-795X BN 978-1-4673-9524-3 J9 INT CONFER PARA PY 2015 BP 13 EP 24 DI 10.1109/PACT.2015.43 PG 12 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF0KC UT WOS:000378942700002 ER PT S AU Habib, S AF Habib, Salman GP IEEE TI Cosmology and Computers: HACCing the Universe SO 2015 INTERNATIONAL CONFERENCE ON PARALLEL ARCHITECTURE AND COMPILATION (PACT) SE International Conference on Parallel Architectures and Compilation Techniques LA English DT Proceedings Paper CT 24th International Conference on Parallel Architecture and Compilation (PACT) CY OCT 18-21, 2015 CL San Francisco, CA SP IEEE Comp Soc, ACM, NSF, IFIP, Berkeley Lab, Oracle, ACM, SIGARCH C1 [Habib, Salman] Argonne Natl Labs, High Energy Phys & Math & Comp Sci Div, Argonne, IL 60439 USA. [Habib, Salman] Univ Chicago, Kavli Inst Cosmol Phys, Chicago, IL 60637 USA. [Habib, Salman] Argonne UChicago Computat Inst, Chicago, IL USA. RP Habib, S (reprint author), Argonne Natl Labs, High Energy Phys & Math & Comp Sci Div, Argonne, IL 60439 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 1089-795X BN 978-1-4673-9524-3 J9 INT CONFER PARA PY 2015 BP 406 EP 406 DI 10.1109/PACT.2015.50 PG 1 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF0KC UT WOS:000378942700034 ER PT S AU Zhang, J Donofrio, D Shalf, J Jung, M AF Zhang, Jie Donofrio, David Shalf, John Jung, Myoungsoo GP IEEE TI Integrating 3D Resistive Memory Cache into GPGPU for Energy-Efficient Data Processing SO 2015 INTERNATIONAL CONFERENCE ON PARALLEL ARCHITECTURE AND COMPILATION (PACT) SE International Conference on Parallel Architectures and Compilation Techniques LA English DT Proceedings Paper CT 24th International Conference on Parallel Architecture and Compilation (PACT) CY OCT 18-21, 2015 CL San Francisco, CA SP IEEE Comp Soc, ACM, NSF, IFIP, Berkeley Lab, Oracle, ACM, SIGARCH C1 [Zhang, Jie; Jung, Myoungsoo] Yonsei Univ, Yonsei Inst Convergence Technol, Sch Integrated Technol, Seoul 120749, South Korea. [Donofrio, David; Shalf, John] Lawrence Berkeley Natl Lab, Comp Architecture Lab, Berkeley, CA 94720 USA. RP Zhang, J (reprint author), Yonsei Univ, Yonsei Inst Convergence Technol, Sch Integrated Technol, Seoul 120749, South Korea. EM jie@yonsei.ac.kr; ddonofrio@lbl.gov; jshalf@lbl.gov; m.jung@yonsei.ac.kr NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 1089-795X BN 978-1-4673-9524-3 J9 INT CONFER PARA PY 2015 BP 496 EP 497 DI 10.1109/PACT.2015.60 PG 2 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BF0KC UT WOS:000378942700049 ER PT J AU Khromova, I Mitrofanov, O Navarro-Cia, M Liberal, I Brener, I Reno, J Melnikov, L Ponomarev, A AF Khromova, I. Mitrofanov, O. Navarro-Cia, M. Liberal, I. Brener, I. Reno, J. Melnikov, L. Ponomarev, A. GP IEEE TI Resonant Terahertz Absorption in Carbon Microfibres SO 9TH INTERNATIONAL CONGRESS ON ADVANCED ELECTROMAGNETIC MATERIALS IN MICROWAVES AND OPTICS (METAMATERIALS 2015) LA English DT Proceedings Paper CT 9th International Congress on Advanced Electromagnetic Materials in Microwaves and Optics (METAMATERIALS) CY SEP 07-12, 2015 CL Oxford, ENGLAND AB Microsized carbon fibres exhibit strong resonant absorption at terahertz frequencies. Using near-field terahertz time-domain spectroscopy, we probe their conductivity by analysing the degree of field enhancement produced by plasmonic resonances. We demonstrate, theoretically and experimentally, the potential usability of carbon microfibres as terahertz absorbers with engineerable response. C1 [Khromova, I.; Mitrofanov, O.] UCL, Torrington Pl, London WC1E 7JE, England. [Khromova, I.] ITMO Univ, St Petersburg 199034, Russia. [Navarro-Cia, M.] Imperial Coll London, London SW7 2AZ, England. [Liberal, I.] Univ Publ Navarra, Pamplona 31006, Spain. [Brener, I.; Reno, J.] Sandia Natl Labs, Ctr Integrated Technol, Albuquerque, NM 87185 USA. [Melnikov, L.] Saratov State Tech Univ, Saratov 410054, Russia. [Ponomarev, A.] St Petersburg Polytech Univ, St Petersburg 194064, Russia. RP Khromova, I (reprint author), UCL, Torrington Pl, London WC1E 7JE, England. EM i.khromova@ucl.ac.uk RI Navarro-Cia, Miguel/L-4517-2013; Melnikov, Leonid/F-8699-2010; Mitrofanov, Oleg/C-1938-2008; Khromova, Irina/C-7587-2011 OI Navarro-Cia, Miguel/0000-0003-0256-6465; Melnikov, Leonid/0000-0002-0423-3982; Mitrofanov, Oleg/0000-0003-3510-2675; Khromova, Irina/0000-0002-9977-3411 NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-7836-6 PY 2015 BP 433 EP 435 PG 3 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Optics SC Engineering; Materials Science; Optics GA BF0NH UT WOS:000379127300145 ER PT B AU Boero, R AF Boero, Riccardo BA Boero, R Morini, M Sonnessa, M Terna, P BF Boero, R Morini, M Sonnessa, M Terna, P TI A Few Good Reasons to Favor Agent-based Modeling in Economic Analyses SO AGENT-BASED MODELS OF THE ECONOMY: FROM THEORIES TO APPLICATIONS LA English DT Article; Book Chapter RP Boero, R (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. OI Boero, Riccardo/0000-0002-7468-9096 NR 8 TC 0 Z9 0 U1 0 U2 0 PU PALGRAVE PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE RG21 6XS, ENGLAND BN 978-1-137-33981-2; 978-1-137-33980-5 PY 2015 BP 3 EP 9 D2 10.1057/9781137339812 PG 7 WC Economics SC Business & Economics GA BF0MY UT WOS:000379123300002 ER PT B AU Boero, R AF Boero, Riccardo BA Boero, R Morini, M Sonnessa, M Terna, P BF Boero, R Morini, M Sonnessa, M Terna, P TI Ex-Ante Evaluation of Public Policies: Unintended Results of Broadband Development SO AGENT-BASED MODELS OF THE ECONOMY: FROM THEORIES TO APPLICATIONS LA English DT Article; Book Chapter RP Boero, R (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. OI Boero, Riccardo/0000-0002-7468-9096 NR 13 TC 0 Z9 0 U1 0 U2 0 PU PALGRAVE PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE RG21 6XS, ENGLAND BN 978-1-137-33981-2; 978-1-137-33980-5 PY 2015 BP 146 EP 160 D2 10.1057/9781137339812 PG 15 WC Economics SC Business & Economics GA BF0MY UT WOS:000379123300010 ER PT B AU Boero, R AF Boero, Riccardo BA Boero, R Morini, M Sonnessa, M Terna, P BF Boero, R Morini, M Sonnessa, M Terna, P TI Economic Impacts of Lack of Coordination in the Governance of Public Policies SO AGENT-BASED MODELS OF THE ECONOMY: FROM THEORIES TO APPLICATIONS LA English DT Article; Book Chapter RP Boero, R (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. OI Boero, Riccardo/0000-0002-7468-9096 NR 9 TC 0 Z9 0 U1 0 U2 0 PU PALGRAVE PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE RG21 6XS, ENGLAND BN 978-1-137-33981-2; 978-1-137-33980-5 PY 2015 BP 161 EP 183 D2 10.1057/9781137339812 PG 23 WC Economics SC Business & Economics GA BF0MY UT WOS:000379123300011 ER PT S AU Dongarra, J Herault, T Robert, Y AF Dongarra, Jack Herault, Thomas Robert, Yves BE Herault, T Robert, Y TI Fault Tolerance Techniques for High-Performance Computing SO FAULT-TOLERANCE TECHNIQUES FOR HIGH-PERFORMANCE COMPUTING SE Computer Communications and Networks Series LA English DT Editorial Material; Book Chapter ID SOFT ERROR RATE; FAILURES; PROJECT; SYSTEMS; DRAM AB This chapter provides an introduction to resilience methods. The emphasis is on checkpointing, the de-facto standard technique for resilience in High Performance Computing. We present the main two protocols, namely coordinated checkpointing and hierarchical checkpointing. Then we introduce performance models and use them to assess the performance of theses protocols. We cover the Young/Daly formula for the optimal period and much more! Next we explain how the efficiency of checkpointing can be improved via fault prediction or replication. Then we move to application-specific methods, such as ABFT. We conclude the chapter by discussing techniques to cope with silent errors (or silent data corruption). C1 [Dongarra, Jack; Herault, Thomas; Robert, Yves] Univ Tennessee, Knoxville, TN USA. [Dongarra, Jack] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Dongarra, Jack] Univ Manchester, Manchester, Lancs, England. [Robert, Yves] Ecole Normale Super Lyon, F-69364 Lyon, France. RP Herault, T (reprint author), Univ Tennessee, Knoxville, TN USA. EM dongarra@eecs.utk.edu; herault@icl.utk.edu; yves.robert@inria.fr NR 75 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER-VERLAG LONDON LTD PI GODALMING PA SWEETAPPLE HOUSE CATTESHALL RD FARNCOMBE, GODALMING GU7 1NH, SURREY, ENGLAND SN 1617-7975 BN 978-3-319-20943-2; 978-3-319-20942-5 J9 COMPUT COMMUN NETW S PY 2015 BP 3 EP 85 DI 10.1007/978-3-319-20943-2_1 D2 10.1007/978-3-319-20943-2 PG 83 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BE9FU UT WOS:000377414900002 ER PT S AU Gainaru, A Cappello, F AF Gainaru, Ana Cappello, Franck BE Herault, T Robert, Y TI Errors and Faults SO FAULT-TOLERANCE TECHNIQUES FOR HIGH-PERFORMANCE COMPUTING SE Computer Communications and Networks Series LA English DT Article; Book Chapter ID ONLINE FAILURE PREDICTION; SYSTEMS AB Understanding the behavior of failures in large-scale systems is important in order to design techniques to tolerate them. Reliability knowledge of resources can be used in numerous ways by scientist of systems administrators: (1) it can be used to improve the quality of service of the machine; (2) to reduce performance loss due to unexpected failures either by reliability-aware scheduling or by reliability-aware checkpointing; (3) to design more resilient applications, programming models or machines in the future. This chapter focuses on offering an overview of failures observed in real large-scale systems and their characteristics, with an emphasis on modeling, detection, and prediction. C1 [Gainaru, Ana] Univ Illinois, NCSA, Champaign, IL 61820 USA. [Cappello, Franck] Argonne Natl Lab, Lemont, IL USA. RP Gainaru, A (reprint author), Univ Illinois, NCSA, Champaign, IL 61820 USA. EM againaru@ncsa.illinois.edu; cappello@mcs.anl.gov NR 87 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG LONDON LTD PI GODALMING PA SWEETAPPLE HOUSE CATTESHALL RD FARNCOMBE, GODALMING GU7 1NH, SURREY, ENGLAND SN 1617-7975 BN 978-3-319-20943-2; 978-3-319-20942-5 J9 COMPUT COMMUN NETW S PY 2015 BP 89 EP 144 DI 10.1007/978-3-319-20943-2_2 D2 10.1007/978-3-319-20943-2 PG 56 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BE9FU UT WOS:000377414900003 ER PT B AU Kim, SJ Spernjak, D Holmes, S Vinayan, V Antony, A AF Kim, Seung Jun Spernjak, Dusan Holmes, Samuel Vinayan, Vimal Antony, Arun GP ASME TI VORTEX-INDUCED MOTION OF FLOATING STRUCTURES: CFD SENSITIVITY CONSIDERATIONS OF TURBULENCE MODEL AND MESH REFINEMENT SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 2 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div AB Vortex-Induced-Motion (VIM) is an important issue in offshore engineering as it impacts the integrity of the mooring system for floating structures such as oil platforms and wind turbine platforms. Understanding and predicting VIM is a challenging task because of the inherent complexity of vortex structure shedding and fluid-structure interaction (FSI) in high Reynolds number flows. Computational Fluid Dynamics (CFD) is one of the key tools in VIM studies and optimization of the offshore systems design. We report a CFD sensitivity study with focus on turbulence model, mesh refinement, and time-step selection. Experimental measurements in a tow-tank facility are used to validate the CFD results. Three types of tank tests are modeled numerically: current drag, oscillating free decay, and VIM. The effect of turbulence model is evaluated by comparing Delayed Detached Eddy Simulation (DDES) and Unsteady Reynolds-Averaged Navier-Stokes (URANS) models. The influence of mesh refinement and time step is investigated by using the grid convergence index (GCI). For present geometry and flow conditions (Re similar to 10(5)), the DDES turbulence model demonstrates better agreement with experimental measurement in model scale VIM compared to the URANS model. In addition, DDES simulation captures the vortex structure more realistically, as evidenced by Q-criteria and turbulent eddy viscosity distribution. Finally, we show how the mesh refinement and time step selection affect simulation accuracy. Two viscous-flow commercial solvers are tested: the finite-volume solver ANSYS-Fluent, and the finite-element solver Altair AcuSolve(TM). The results of this CFD Sensitivity study provide useful guidelines for CFD simulation of FSI and VIM problems for offshore engineering applications. C1 [Kim, Seung Jun; Spernjak, Dusan] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Holmes, Samuel] Red Wing Engn, Mountain View, CA USA. [Vinayan, Vimal; Antony, Arun] Houston Offshore Engn, Houston, TX USA. RP Kim, SJ (reprint author), Los Alamos Natl Lab, Los Alamos, NM 87545 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5649-9 PY 2015 AR V002T08A057 PG 11 WC Engineering, Marine; Engineering, Ocean; Engineering, Mechanical SC Engineering GA BF0XA UT WOS:000379707000057 ER PT B AU Vinayan, V Antony, A Halkyard, J Kim, SJ Holmes, S Spernjak, D AF Vinayan, Vimal Antony, Arun Halkyard, John Kim, Seung-Jun Holmes, Sam Spernjak, Dusan GP ASME TI VORTEX-INDUCED MOTION OF DEEP-DRAFT SEMISUBMERSIBLES: A CFD-BASED PARAMETRIC STUDY SO PROCEEDINGS OF THE ASME 34TH INTERNATIONAL CONFERENCE ON OCEAN, OFFSHORE AND ARCTIC ENGINEERING, 2015, VOL 2 LA English DT Proceedings Paper CT 34th ASME International Conference on Ocean, Offshore and Arctic Engineering (OMAE2015) CY MAY 31-JUN 05, 2015 CL St John's, CANADA SP Amer Soc Mech Engn, Ocean Offshore & Arct Engn Div AB Deep Draft Column Stabilized Floaters (DDCSFs) provide a viable dry-tree platform for ultra-deep water applications. A particular area of concern for this concept is its susceptibility to Vortex-Induced Motions (VIM) due to its deeper draft that results in higher column slenderness ratios than conventional semisubmersibles. The VIM characteristics of platforms have traditionally been assessed through experimental measurements but in recent years Computational Fluid Dynamics (CFD) has been used alongside experiments to predict VIM. Besides solving problems that cannot be addressed by other analysis methods, CFD can be seamlessly integrated into the overall concept design cycle where different geometric parameters can be varied to optimize the performance of the platform. While tank experiments give little fluid flow information without extensive instrumentation, CFD solutions provide flow details that can be used to improve design. CFD also provides a cost-effective solution given the high cost of experiments and facility scheduling constraints. One such DDCSF concept is the Paired-Column semi-submersible (PC-Semi) and the design has a pair of columns instead of one at each of the four sides of the platform. Several design parameters of the columns, like the inter column spacing, the cross-sectional areas, and the shape of the respective columns can be tuned to minimize the heave response. This study takes a detailed look at the effect of the change in the column dependent parameters on the overall VIM characteristics of the PC semisubmersible. A two-step approach is presented in which the first step is to identify aspects of the physics that are unique to VIM and then formulate a methodology to predict it within the framework of a set of commercially available CFD tools. The methodology is verified further through a comparison with available experimental data. The second step is to apply the verified methodology and CFD tools to predict the VIM performance of a range of PC-Semi concepts obtained through a systematic variation of the column-dependent design parameters in model scale. Through this exercise the critical design parameters that can either improve or prove detrimental to the VIM performance of the PC-Semi design are identified. C1 [Vinayan, Vimal; Antony, Arun] Houston Offshore Engn, Houston, TX 77094 USA. [Halkyard, John] Deep Reach Technol Inc, Houston, TX USA. [Kim, Seung-Jun; Spernjak, Dusan] Los Alamos Natl Lab, Los Alamos, NM USA. [Holmes, Sam] Red Wing Engn Inc, Mountain View, CA USA. RP Vinayan, V (reprint author), Houston Offshore Engn, Houston, TX 77094 USA. NR 23 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5649-9 PY 2015 AR V002T08A003 PG 11 WC Engineering, Marine; Engineering, Ocean; Engineering, Mechanical SC Engineering GA BF0XA UT WOS:000379707000003 ER PT B AU Weisgraber, TH Walsh, SDC Karazis, K Gottuso, D AF Weisgraber, Todd H. Walsh, Stuart D. C. Karazis, Kostas Gottuso, Dennis GP ASME TI MULTI-SCALE FLUID-STRUCTURE INTERACTION SIMULATIONS BASED ON MESOSCOPIC APPROACHES SO PROCEEDINGS OF THE ASME INTERNATIONAL MECHANICAL ENGINEERING CONGRESS AND EXPOSITION, 2014, VOL 4A LA English DT Proceedings Paper CT ASME International Mechanical Engineering Congress and Exposition (IMECE) CY NOV 14-20, 2014 CL Montreal, CANADA SP ASME ID LATTICE-BOLTZMANN METHOD; GRID REFINEMENT; FLOWS AB Many challenging fluid-structure interaction problems in nuclear engineering remain unresolved because current CFD methodologies are unable to manage the number of computational cells needed and/or the dculties associated with meshing changing geometries. One of the most promising recent methodologies for fluid dynamics modeling is the lattice-Boltzmann method - an approach that offers significant advantages over classical CFD methodologies by 1) greatly reducing meshing requirements, 2) offering great scalability, and 3) through relative ease of code parallelization. While LBM often requires increased numerical effort compared to other methods, this can be dramatically reduced by combining LBM with Adaptive Mesh Refinement (LB-AMR). This study describes an ongoing collaboration investigating nuclear fuel -assembly spacer grid performance. The LB -AMR method, used to simulate the flow field around a specific spacer grid design, is capable of describing turbulent flows for high Reynolds numbers, revealing rich flow dynamics in good qualitative agreement with experimental results. C1 [Weisgraber, Todd H.; Walsh, Stuart D. C.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Karazis, Kostas; Gottuso, Dennis] AREVA Inc, Lynchburg, VA 24506 USA. RP Weisgraber, TH (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM weisgraber2@llnl.gov NR 20 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-4647-6 PY 2015 AR V04AT04A075 PG 8 WC Automation & Control Systems; Engineering, Mechanical SC Automation & Control Systems; Engineering GA BF0UI UT WOS:000379450800075 ER PT S AU Koch, MW Moya, MM Chow, JG Goold, J Malinas, R AF Koch, Mark W. Moya, Mary M. Chow, Jim G. Goold, Jeremy Malinas, Rebecca GP IEEE TI Road Segmentation using Multipass Single-Pol Synthetic Aperture Radar Imagery SO 2015 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION WORKSHOPS (CVPRW) SE IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops LA English DT Proceedings Paper CT IEEE Conference on Computer Vision and Pattern Recognition (CVPR) CY JUN 07-12, 2015 CL Boston, MA SP IEEE ID RESOLUTION SAR IMAGES; NETWORK EXTRACTION; COHERENCY MATRIX; POLARIMETRIC SAR; SPECKLE; DECOMPOSITION; MODEL; CLASSIFICATION; ALGORITHM; LOCATION AB Synthetic aperture radar (SAR) is a remote sensing technology that can truly operate 24/7. It's an all-weather system that can operate at any time except in the most extreme conditions. By making multiple passes over a wide area, a SAR can provide surveillance over a long time period. For high level processing it is convenient to segment and classify the SAR images into objects that identify various terrains and man-made structures that we call "static features." In this paper we concentrate on automatic road segmentation. This not only serves as a surrogate for finding other static features, but road detection in of itself is important for aligning SAR images with other data sources. In this paper we introduce a novel SAR image product that captures how different regions decorrelate at different rates. We also show how a modified Kolmogorov-Smirnov test can be used to model the static features even when the independent observation assumption is violated. C1 [Koch, Mark W.; Moya, Mary M.; Chow, Jim G.; Goold, Jeremy; Malinas, Rebecca] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Koch, MW (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM mwkoch@sandia.gov NR 60 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-7508 BN 978-1-4673-6759-2 J9 IEEE COMPUT SOC CONF PY 2015 PG 10 WC Computer Science, Artificial Intelligence SC Computer Science GA BF0IK UT WOS:000378887900044 ER PT S AU Quach, TT Malinas, R Koch, MW AF Tu-Thach Quach Malinas, Rebecca Koch, Mark W. GP IEEE TI A Model-Based Approach to Finding Tracks in SAR CCD Images SO 2015 IEEE CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION WORKSHOPS (CVPRW) SE IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops LA English DT Proceedings Paper CT IEEE Conference on Computer Vision and Pattern Recognition (CVPR) CY JUN 07-12, 2015 CL Boston, MA SP IEEE ID PRINCIPAL CURVES AB Combining multiple synthetic aperture radar (SAR) images taken, at different times of the same scene produces coherent change detection (CCD) images that can detect small surface changes such as lire tracks. The resulting CCD images can be used in an automated approach to identify and label tracks. Existing techniques have limited success due to the noisy nature of these CCD images. In particular, existing techniques require some user cues and can only trace a single track. This paper presents an approach to automatically identify and label multiple tracks in CCD images. We use an explicit objective function that utilizes the Bayesian information criterion to find the simplest set of curves that explains the observed data. Experimental results show that it is capable of identifying tracks under various scenes and can correctly declare when no trucks are present. C1 [Tu-Thach Quach; Malinas, Rebecca; Koch, Mark W.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Quach, TT (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM tong@sandia.gov; rmalina@sandia.gov; mwkoch@sandia.gov NR 12 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2160-7508 BN 978-1-4673-6759-2 J9 IEEE COMPUT SOC CONF PY 2015 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BF0IK UT WOS:000378887900030 ER PT S AU Leon, EA Karlin, I Grant, RE AF Leon, Edgar A. Karlin, Ian Grant, Ryan E. GP IEEE TI Optimizing Explicit Hydrodynamics for Power, Energy, and Performance SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE optimization; power; energy; performance AB Practical considerations for future supercomputer designs will impose limits on both instantaneous power consumption and total energy consumption. Working within these constraints while providing the maximum possible performance, application developers will need to optimize their code for speed alongside power and energy concerns. This paper analyzes the effectiveness of several code optimizations including loop fusion, data structure transformations, and global allocations. A per component measurement and analysis of different architectures is performed, enabling the examination of code optimizations on different compute subsystems. Using an explicit hydrodynamics proxy application from the U.S. Department of Energy, LULESH, we show how code optimizations impact different computational phases of the simulation. This provides insight for simulation developers into the best optimizations to use during particular simulation compute phases when optimizing code for future supercomputing platforms. We examine and contrast both x86 and Blue Gene architectures with respect to these optimizations. C1 [Leon, Edgar A.; Karlin, Ian] Lawrence Livermore Natl Lab, Livermore Comp, Livermore, CA USA. [Grant, Ryan E.] Sandia Natl Labs, Ctr Res Comp, Albuquerque, NM 87185 USA. RP Leon, EA (reprint author), Lawrence Livermore Natl Lab, Livermore Comp, Livermore, CA USA. EM leon@llnl.gov; karlin1@llnl.gov; regrant@sandia.gov NR 19 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 11 EP 21 DI 10.1109/CLUSTER.2015.12 PG 11 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100002 ER PT S AU Aji, AM Pena, AJ Balaji, P Feng, WC AF Aji, Ashwin M. Pena, Antonio J. Balaji, Pavan Feng, Wu-chun GP IEEE TI Automatic Command Queue Scheduling for Task-Parallel Workloads in OpenCL SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE OpenCL; Runtime Systems; Scheduling AB OpenCL is a portable interface that can be used to program cluster nodes with heterogeneous compute devices. The OpenCL specification tightly binds its workflow abstraction, or "command queue," to a specific device for the entire program. For best performance, the user has to find the ideal queue device mapping at command queue creation time, an effort that requires a thorough understanding of the match between the characteristics of all the underlying device architectures and the kernels in the program. In this paper, we propose to add scheduling attributes to the OpenCL context and command queue objects that can be leveraged by an intelligent runtime scheduler to automatically perform ideal queue device mapping. Our proposed extensions enable the average OpenCL programmer to focus on the algorithm design rather than scheduling and automatically gain performance without sacrificing programmability. As an example, we design and implement an OpenCL runtime for task-parallel workloads, called MultiCL, which efficiently schedules command queues across devices. Within MultiCL, we implement several key optimizations to reduce runtime overhead. Our case studies include the SNU-NPB OpenCL benchmark suite and a real-world seismology simulation. We show that, on average, users have to apply our proposed scheduler extensions to only four source lines of code in existing OpenCL applications in order to automatically benefit from our runtime optimizations. We also show that MultiCL always maps command queues to the optimal device set with negligible runtime overhead. C1 [Aji, Ashwin M.] Adv Micro Devices Inc, AMD Res, Sunnyvale, CA 94088 USA. [Feng, Wu-chun] Virginia Tech, Dept Comp Sci, Blacksburg, VA USA. [Pena, Antonio J.; Balaji, Pavan] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. RP Aji, AM (reprint author), Adv Micro Devices Inc, AMD Res, Sunnyvale, CA 94088 USA. EM ashwin.aji@amd.com; apenya@mcs.anl.gov; balaji@mcs.anl.gov; feng@cs.vt.edu OI Pena Monferrer, Antonio J./0000-0002-3575-4617 NR 24 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 42 EP 51 DI 10.1109/CLUSTER.2015.15 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100005 ER PT S AU Zhang, WZ Tang, HJ Zou, XC Harenberg, S Liu, Q Klasky, S Samatova, NF AF Zhang, Wenzhao Tang, Houjun Zou, Xiaocheng Harenberg, Steven Liu, Qing Klasky, Scott Samatova, Nagiza F. GP IEEE TI Exploring Memory Hierarchy to Improve Scientific Data Read Performance SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE scientific data; read contention; memory hierarchy; SSD ID EXTREME-SCALE MACHINES; SSD; ACCESS AB Improving read performance is one of the major challenges with speeding up scientific data analytic applications. Utilizing the memory hierarchy is one major line of researches to address the read performance bottleneck. Related methods usually combine solide-state-drives(SSDs) with dynamic random-access memory(DRAM) and/or parallel file system(PFS) to mitigate the speed and space gap between DRAM and PFS. However, these methods are unable to handle key performance issues plaguing SSDs, namely read contention that may cause up to 50% performance reduction. In this paper, we propose a framework that exploits the memory hierarchy resource to address the read contention issues involved with SSDs. The framework employs a general purpose online read algorithm that able to detect and utilize memory hierarchy resource to relieve the problem. To maintain a near optimal operating environment for SSDs, the framework is able to orchastrate data chunks across different memory layers to facilitate the read algorithm. Compared to existing tools, our framework achieves up to 50% read performance improvement when tested on datasets from real-world scientific simulations. C1 [Zhang, Wenzhao; Tang, Houjun; Zou, Xiaocheng; Harenberg, Steven; Samatova, Nagiza F.] N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA. [Zhang, Wenzhao; Tang, Houjun; Zou, Xiaocheng; Liu, Qing; Klasky, Scott; Samatova, Nagiza F.] Oak Ridge Natl Lab, Comp Sci & Math Div, Oak Ridge, TN 37830 USA. RP Samatova, NF (reprint author), N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA. EM wzhang27@ncsu.edu; htang4@ncsu.edu; xzou2@ncsu.edu; sdharenb@ncsu.edu; liuq@ornl.gov; klasky@ornl.gov; samatova@csc.ncsu.edu NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 66 EP 69 DI 10.1109/CLUSTER.2015.18 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100008 ER PT S AU Castello, A Mayo, R Quintana-Orti, ES Pena, AJ Balaji, P AF Castello, Adrian Mayo, Rafael Quintana-Orti, Enrique S. Pena, Antonio J. Balaji, Pavan GP IEEE TI Exploring the Suitability of Remote GPGPU Virtualization for the OpenACC Programming Model Using rCUDA SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE GPUs; OpenACC; remote virtualization; rCUDA ID CUDA AB OpenACC is an application programming interface (API) that aims to unleash the power of heterogeneous systems composed of CPUs and accelerators such as graphic processing units (GPUs) or Intel Xeon Phi coprocessors. This directive-based programming model is intended to enable developers to accelerate their application's execution with much less effort. Coprocessors offer significant computing power but in many cases these devices remain largely underused because not all parts of applications match the accelerator architecture. Remote accelerator virtualization frameworks introduce a means to address this problem. In particular, the remote CUDA virtualization middleware rCUDA provides transparent remote access to any GPU installed in a cluster. Combining these two technologies, OpenACC and rCUDA, in a single scenario is naturally appealing. In this work we explore how the different OpenACC directives behave on top of a remote GPGPU virtualization technology in two different hardware configurations. Our experimental evaluation reveals favorable performance results when the two technologies are combined, showing low overhead and similar scaling factors when executing OpenACC-enabled directives. C1 [Castello, Adrian; Mayo, Rafael; Quintana-Orti, Enrique S.] Univ Jaume I Castello, Castellon de La Plana, Spain. [Pena, Antonio J.; Balaji, Pavan] Argonne Natl Lab, Argonne, IL 60439 USA. RP Castello, A (reprint author), Univ Jaume I Castello, Castellon de La Plana, Spain. EM adcastel@uji.es; mayo@uji.es; quintana@uji.es; apenya@anl.gov; balaji@anl.gov OI Pena Monferrer, Antonio J./0000-0002-3575-4617 NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 92 EP 95 DI 10.1109/CLUSTER.2015.23 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100013 ER PT S AU Vishnu, A Narasimhan, J Holder, L Kerbyson, D Hoisie, A AF Vishnu, Abhinav Narasimhan, Jeyanthi Holder, Lawrence Kerbyson, Darren Hoisie, Adolfy GP IEEE TI Fast and Accurate Support Vector Machines on Large Scale Systems SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB Support Vector Machines (SVM) is a supervised Machine Learning and Data Mining (MLDM) algorithm, which has become ubiquitous largely due to its high accuracy and obliviousness to dimensionality. The objective of SVM is to find an optimal boundary - also known as hyperplane - which separates the samples (examples in a dataset) of different classes by a maximum margin. Usually, very few samples contribute to the definition of the boundary. However, existing parallel algorithms use the entire dataset for finding the boundary, which is sub-optimal for performance reasons. In this paper, we propose a novel distributed memory algorithm to eliminate the samples which do not contribute to the boundary definition in SVM. We propose several heuristics, which range from early (aggressive) to late (conservative) elimination of the samples, such that the overall time for generating the boundary is reduced considerably. In a few cases, a sample may be eliminated (shrunk) pre-emptively - potentially resulting in an incorrect boundary. We propose a scalable approach to synchronize the necessary data structures such that the proposed algorithm maintains its accuracy. We consider the necessary trade-offs of single/multiple synchronization using in-depth time space complexity analysis. We implement the proposed algorithm using MPI and compare it with libsvm - de facto sequential SVM software - which we enhance with OpenMP for multi-core/many-core parallelism. Our proposed approach shows excellent efficiency using up to 4096 processes on several large datasets such as UCI HIGGS Boson dataset and Offending URL dataset. C1 [Vishnu, Abhinav; Kerbyson, Darren; Hoisie, Adolfy] Pacific NW Natl Lab, Adv Comp Math & Data Div, 902 Battelle Blvd, Richland, WA 99352 USA. [Narasimhan, Jeyanthi; Holder, Lawrence] Washington State Univ, Sch Elect Engn & Comp Sci, Pullman, WA 99164 USA. RP Vishnu, A (reprint author), Pacific NW Natl Lab, Adv Comp Math & Data Div, 902 Battelle Blvd, Richland, WA 99352 USA. EM abhinav.vishnu@pnnl.gov; jsalemna@eecs.wsu.edu; holder@wsu.edu; darren.kerbyson@pnl.gov; adolfy.hoisie@pnl.gov NR 29 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 110 EP 119 DI 10.1109/CLUSTER.2015.26 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100016 ER PT S AU Isaila, F Balaprakash, P Wild, SM Kimpe, D Latham, R Ross, R Hovland, P AF Isaila, Florin Balaprakash, Prasanna Wild, Stefan M. Kimpe, Dries Latham, Rob Ross, Rob Hovland, Paul GP IEEE TI Collective I/O tuning using analytical and machine learning models SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE I/O performance modeling; statistical and analytical performance models; model-based tuning AB The optimization of parallel I/O has become challenging because of the increasing storage hierarchy, performance variability of shared storage systems, and the number of factors in the hardware and software stacks that impact performance. In this paper, we perform an in-depth study of the complexity involved in I/O autotuning and performance modeling, including the architecture, software stack, and noise. We propose a novel hybrid model combining analytical models for communication and storage operations and black-box models for the performance of the individual operations. The experimental results show that the hybrid approach performs significantly better and shows a higher robustness to noise than state-of-the-art machine learning approaches, at the cost of a higher modeling complexity. C1 [Isaila, Florin; Balaprakash, Prasanna; Wild, Stefan M.; Kimpe, Dries; Latham, Rob; Ross, Rob; Hovland, Paul] Argonne Natl Lab, Argonne, IL 60439 USA. [Isaila, Florin] Univ Carlos III Madrid, E-28903 Getafe, Spain. RP Isaila, F (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM fisaila@mcs.anl.gov; pbalapra@mcs.anl.gov; wild@mcs.anl.gov; dkimpe@mcs.anl.gov; robl@mcs.anl.gov; rross@mcs.anl.gov; hovland@mcs.anl.gov RI Wild, Stefan/P-4907-2016 OI Wild, Stefan/0000-0002-6099-2772 NR 18 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 128 EP 137 DI 10.1109/CLUSTER.2015.29 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100018 ER PT S AU Vishnu, A Agarwal, K AF Vishnu, Abhinav Agarwal, Khushbu GP IEEE TI Large Scale Frequent Pattern Mining using MPI One-Sided Model SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB In this paper, we propose a work-stealing runtime - Library for Work Stealing (LibWS) - using MPI one-sided model for designing scalable FP-Growth de facto frequent pattern mining algorithm on large scale systems. LibWS provides locality efficient and highly scalable work-stealing techniques for load balancing on a variety of data distributions. We also propose a novel communication algorithm for FP-growth data exchange phase, which reduces the communication complexity from state-of-the-art Theta(p) to Theta(f + p/f), for p processes and f frequent attributed-ids. FP-Growth is implemented using LibWS and evaluated on several work distributions and support counts. An experimental evaluation of the FP-Growth on LibWS using 4096 processes on an InfiniBand Cluster demonstrates excellent efficiency for several work distributions (91% efficiency for Power-law and 93% for Poisson). The proposed distributed FP Tree merging algorithm provides 38x communication speedup on 4096 cores. C1 [Vishnu, Abhinav; Agarwal, Khushbu] Pacific NW Natl Lab, Adv Comp Math & Data Div, 902 Battelle Blvd, Richland, WA 99352 USA. RP Vishnu, A (reprint author), Pacific NW Natl Lab, Adv Comp Math & Data Div, 902 Battelle Blvd, Richland, WA 99352 USA. NR 32 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 138 EP 147 DI 10.1109/CLUSTER.2015.30 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100019 ER PT S AU Feng, K Venkata, MG Li, D Sun, XH AF Feng, Kun Venkata, Manjunath Gorentla Li, Dong Sun, Xian-He GP IEEE TI Fast Fault Injection and Sensitivity Analysis for Collective Communications SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB The collective communication operations, which are widely used in parallel applications for global communication and synchronization are critical for application's performance and scalability. However, how faulty collective communications impact the application and how errors propagate between the application processes is largely unexplored. One of the critical reasons for this situation is the lack of fast evaluation method to investigate the impacts of faulty collective operations. The traditional random fault injection methods relying on a large amount of fault injection tests to ensure statistical significance require a significant amount of resources and time. These methods result in prohibitive evaluation cost when applied to the collectives. In this paper, we introduce a novel tool named Fast Fault Injection and Sensitivity Analysis Tool (FastFIT) to conduct fast fault injection and characterize the application sensitivity to faulty collectives. The tool achieves fast exploration by reducing the exploration space and predicting the application sensitivity using Machine Learning (ML) techniques. A basis for these techniques are implicit correlations between MPI semantics, application context, critical application features, and application responses to faulty collective communications. The experimental results show that our approach reduces the fault injection points and tests by 97% for representative benchmarks (NAS Parallel Benchmarks (NPB)) and a realistic application (Large-scale Atomic/Molecular Massively Parallel Simulator (LAMMPS)) on a production supercomputer. Further, we statistically generalize the application sensitivity to faulty collective communications for these workloads, and present correlation between application features and the sensitivity. C1 [Venkata, Manjunath Gorentla] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Li, Dong] Univ Calif Merced, Merced, CA USA. [Feng, Kun; Sun, Xian-He] IIT, Chicago, IL 60616 USA. RP Feng, K (reprint author), IIT, Chicago, IL 60616 USA. EM kfeng1@hawk.iit.edu; manjugv@ornl.gov; dli35@ucmerced.edu; sun@iit.edu NR 11 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 148 EP 157 DI 10.1109/CLUSTER.2015.31 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100020 ER PT S AU Guan, Q DeBardeleben, N Atkinson, B Robey, R Jones, WM AF Guan, Qiang DeBardeleben, Nathan Atkinson, Brian Robey, Robert Jones, William M. GP IEEE TI Towards Building Resilient Scientific Applications: Resilience Analysis on the Impact of Soft Error and Transient Error Tolerance With the CLAMR Hydrodynamics Mini-App SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp ID FAILURES AB In this paper, we present a resilience analysis of the impact of soft errors on CLAMR, a hydrodynamics mini app for high performance computing (HPC). Leveraging the conservation of mass law, we design a fault detection mechanism and checkpoint/restart fault tolerance approach to enhance the resilience of CLAMR. Overall, our approach can detect up to 88.3% of faults that propagate into SDC or crashes with minimal (less than 1%) overhead for the optimal configuration. We show that CLAMR's fault-tolerance depends on when a fault is injected into the simulation and we also evaluate the frequency of detection and checkpointing on performance. C1 [Guan, Qiang; DeBardeleben, Nathan] Los Alamos Natl Lab, Ultrascale Syst Res Ctr, Los Alamos, NM 87545 USA. [Atkinson, Brian] Clemson Univ, Dept Elect & Comp Engn, Clemson, SC USA. [Robey, Robert] Los Alamos Natl Lab, Eulerian Codes, Los Alamos, NM USA. [Jones, William M.] Coastal Carolina Univ, Dept Comp Sci, Conway, SC USA. RP Guan, Q (reprint author), Los Alamos Natl Lab, Ultrascale Syst Res Ctr, Los Alamos, NM 87545 USA. EM qguan@lanl.gov; ndebard@lanl.gov; bwa@clemson.edu; brobey@lanl.gov; wjones@coastal.edu NR 10 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 176 EP 179 DI 10.1109/CLUSTER.2015.35 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100024 ER PT S AU Behzad, B Byna, S Wild, SM Prabhat Snir, M AF Behzad, Babak Byna, Surendra Wild, Stefan M. Prabhat Snir, Marc GP IEEE TI Dynamic Model-driven Parallel I/O Performance Tuning SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE Parallel I/O; Parallel I/O Tuning; Performance Optimization; Performance Modeling AB Parallel I/O performance depends highly on the interactions among multiple layers of the parallel I/O stack. The most common layers include high-level I/O libraries, MPI-IO middleware, and parallel file system. Each of these layers offers various tunable parameters to control intermediary data transfer points and the final data layout. Due to the interdependencies and the number of combinations of parameters, finding a good set of parameter values for a specific application's I/O pattern is challenging. Recent efforts, such as autotuning with genetic algorithms (GAs) and analytical models, have several limitations. For instance, analytical models fail to capture the dynamic nature of shared supercomputing systems and are application-specific. GA -based tuning requires running many time-consuming experiments for each input size. In this paper, we present a strategy to generate automatically an empirical model for a given application pattern. Using a set of real measurements from running an I/O kernel as training set, we generate a nonlinear regression model. We use this model to predict the top -20 tunable parameter values that give efficient I/O performance and rerun the I/O kernel to select the best set of parameter under the current conditions as tunable parameters for future runs of the same I/O kernel. Using this approach, we demonstrate 6X - 94X speedup over default I/O time for different I/O kernels running on multiple HPC systems. We also evaluate performance by identifying interdependencies among different sets of tunable parameters. C1 [Behzad, Babak; Snir, Marc] Univ Illinois, Urbana, IL 61801 USA. [Byna, Surendra; Prabhat] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Wild, Stefan M.; Snir, Marc] Argonne Natl Lab, Argonne, IL 60439 USA. RP Behzad, B (reprint author), Univ Illinois, Urbana, IL 61801 USA. RI Wild, Stefan/P-4907-2016 OI Wild, Stefan/0000-0002-6099-2772 NR 22 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 184 EP 193 DI 10.1109/CLUSTER.2015.37 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100026 ER PT S AU Wang, T Oral, S Pritchard, M Wang, B Yu, WK AF Wang, Teng Oral, Sarp Pritchard, Michael Wang, Bin Yu, Weikuan GP IEEE TI TRIO: Burst Buffer Based I/O Orchestration SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB The growing computing power on leadership HPC systems is often accompanied by ever-escalating failure rates. Checkpointing is a common defensive mechanism used by scientific applications for failure recovery. However, directly writing the large and bursty checkpointing dataset to parallel file systems can incur significant I/O contention on storage servers. Such contention in turn degrades bandwidth utilization of storage servers and prolongs the average job I/O time of concurrent applications. Recently burst buffers have been proposed as an intermediate layer to absorb the bursty I/O traffic from compute nodes to storage backend. But an I/O orchestration mechanism is still desirable to efficiently move checkpointing data from burst buffers to storage backend. In this paper, we propose a burst buffer based I/O orchestration framework, named TRIO, to intercept and reshape the bursty writes for better sequential write traffic to storage servers. Meanwhile, TRIO coordinates the flushing orders among concurrent burst buffers to alleviate the contention on storage server. Our experimental results demonstrated that TRIO could efficiently utilize storage bandwidth and reduce the average job I/O time by 37% on average for data intensive applications in typical checkpointing scenarios. C1 [Wang, Teng; Yu, Weikuan] Florida State Univ, Tallahassee, FL 32306 USA. [Oral, Sarp] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Pritchard, Michael; Wang, Bin] Auburn Univ, Auburn, AL 36849 USA. RP Wang, T (reprint author), Florida State Univ, Tallahassee, FL 32306 USA. EM twang@cs.fsu.edu; oralhs@ornl.gov; mjp0009@auburn.edu; bwang@auburn.edu; yuw@cs.fsu.edu NR 34 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 194 EP 203 DI 10.1109/CLUSTER.2015.38 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100027 ER PT S AU Wang, K Liu, N Sadooghi, I Yang, X Zhou, XB Li, TL Lang, M Sun, XH Raicu, I AF Wang, Ke Liu, Ning Sadooghi, Iman Yang, Xi Zhou, Xiaobing Li, Tonglin Lang, Michael Sun, Xian-He Raicu, Ioan GP IEEE TI Overcoming Hadoop Scaling Limitations through Distributed Task Execution SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE data driven programming model; MapReduce; task execution framework; scheduling; extreme scales AB Data driven programming models like MapReduce have gained the popularity in large-scale data processing. Although great efforts through the Hadoop implementation and framework decoupling (e.g. YARN, Mesos) have allowed Hadoop to scale to tens of thousands of commodity cluster processors, the centralized designs of the resource manager, task scheduler and metadata management of HDFS file system adversely affect Hadoop's scalability to tomorrow's extreme-scale data centers. This paper aims to address the YARN scaling issues through a distributed task execution framework, MATRIX, which was originally designed to schedule the executions of data-intensive scientific applications of many-task computing on supercomputers. We propose to leverage the distributed design wisdoms of MATRIX to schedule arbitrary data processing applications in cloud. We compare MATRIX with YARN in processing typical Hadoop workloads, such as WordCount, TeraSort, Grep and RandomWriter, and the Ligand application in Bioinformatics on the Amazon Cloud. Experimental results show that MATRIX outperforms YARN by 1.27X for the typical workloads, and by 2.04X for the real application. We also run and simulate MATRIX with fine-grained sub-second workloads. With the simulation results giving the efficiency of 86.8% at 64K cores for the 150ms workload, we show that MATRIX has the potential to enable Hadoop to scale to extreme-scale data centers for fine-grained workloads. C1 [Wang, Ke; Liu, Ning; Sadooghi, Iman; Yang, Xi; Li, Tonglin; Sun, Xian-He; Raicu, Ioan] IIT, Chicago, IL 60616 USA. [Zhou, Xiaobing] Hortonworks Inc, Santa Clara, CA USA. [Lang, Michael] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Raicu, Ioan] Argonne Natl Lab, Argonne, IL 60439 USA. RP Wang, K (reprint author), IIT, Chicago, IL 60616 USA. EM kwang22@hawk.iit.edu; nliu8@hawk.iit.edu; isadoogh@hawk.iit.edu; xyang34@hawk.iit.edu; xzhou@hortonworks.com; tli13@hawk.iit.edu; mlang@lanl.gov; sun@iit.edu; iraicu@cs.iit.edu NR 67 TC 10 Z9 10 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 236 EP 245 DI 10.1109/CLUSTER.2015.42 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100031 ER PT S AU Morari, A Weaver, J Villa, O Haglin, D Tumeo, A Castellana, VG Feo, J AF Morari, Alessandro Weaver, Jesse Villa, Oreste Haglin, David Tumeo, Antonino Castellana, Vito Giovanni Feo, John GP IEEE TI High-performance, Distributed Dictionary Encoding of RDF Datasets SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB In this work we propose a novel approach for RDF (Resource Description Framework) dictionary encoding that employs a parallel RDF parser and a distributed dictionary data structure, exploiting RDF-specific optimizations. In contrast with previous solutions, this approach exploits the Partitioned Global Address Space (PGAS) programming model combined with active messages. We evaluate the performance of our dictionary encoder in our RDF database, GEMS (Graph Engine for Multithreaded Systems), and provide an empirical comparison against previous approaches. Our comparison shows that our dictionary encoder scales significantly better and achieves higher performance than the current state of the art, providing a key element for the realization of a more efficient RDF database. C1 [Morari, Alessandro; Weaver, Jesse; Haglin, David; Tumeo, Antonino; Castellana, Vito Giovanni; Feo, John] Pacific NW Natl Lab, Richland, WA 99354 USA. [Villa, Oreste] NVIDIA Res, Santa Clara, CA 95051 USA. RP Morari, A (reprint author), Pacific NW Natl Lab, Richland, WA 99354 USA. EM alessandro.morari@pnnl.gov; jesse.weaver@pnnl.gov; ovilla@nvidia.com; david.haglin@pnnl.gov; antonino.tumeo@pnnl.gov; vitoGiovanni.castellana@pnnl.gov; john.feo@pnnl.gov RI Tumeo, Antonino/L-3106-2016 NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 250 EP 253 DI 10.1109/CLUSTER.2015.44 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100033 ER PT S AU Zhou, Z Yang, X Zhao, DF Rich, P Tang, W Wang, J Lan, ZL AF Zhou, Zhou Yang, Xu Zhao, Dongfang Rich, Paul Tang, Wei Wang, Jia Lan, Zhiling GP IEEE TI I/O-Aware Batch Scheduling for Petascale Computing Systems SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB In the Big Data era, the gap between the storage performance and an application's I/O requirement. is increasing. I/O congestion caused by concurrent storage accesses from multiple applications is inevitable and severely harms the performance. Conventional approaches either focus on optimizing an application's access pattern individually or handle I/O requests on a low-level storage layer without any knowledge from the upper-level applications. In this paper, we present a novel I/O-aware batch scheduling framework to coordinate ongoing I/O requests on petascale computing systems. The motivation behind this innovation is that the batch scheduler has a holistic view of both the system state and jobs' activities and can control the jobs' status on the fly during their execution. We treat a job's I/O requests as periodical subjobs within its lifecycle and transform the I/O congestion issue into a classical scheduling problem. We design two scheduling polices with different scheduling objectives either on user-oriented metrics or system performance. We conduct extensive trace based simulations using real job traces and I/O traces from a production IBM Blue Gene/Q system. Experimental results demonstrate that our design can improve job performance by more than 30%, as well as increasing system performance. C1 [Zhou, Zhou; Yang, Xu; Zhao, Dongfang; Wang, Jia; Lan, Zhiling] IIT, Chicago, IL 60616 USA. [Rich, Paul] Argonne Natl Lab, Argonne, IL 60439 USA. [Tang, Wei] Google Inc, New York, NY 10018 USA. RP Zhou, Z (reprint author), IIT, Chicago, IL 60616 USA. EM zzhou1@hawk.iit.edu; xyang56@hawk.iit.edu; dzhao8@hawk.iit.edu; richp@alcf.anl.gov; weitang@google.com; jwang@ece.iit.edu; lan@iit.edu NR 33 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 254 EP 263 DI 10.1109/CLUSTER.2015.45 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100034 ER PT S AU Dai, D Carns, P Ross, RB Jenkins, J Blauer, K Chen, Y AF Dai, Dong Carns, Philip Ross, Robert B. Jenkins, John Blauer, Kyle Chen, Yong GP IEEE TI GraphTrek: Asynchronous Graph Traversal for Property Graph-Based Metadata Management SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE Parallel File Systems; Rich Metadata Management; Property Graph; Graph Traversal; Property Graph Databases ID PROVENANCE; SCIENCE AB Property graphs are a promising data model for rich metadata management in high-performance computing (HPC) systems because of their ability to represent not only metadata attributes but also the relationships between them. A property graph can be used to record the relationships between users, jobs, and data, for example, with unique annotations for each entity. This high-volume, power-law distributed use case is a natural fit for an out-of-core distributed property graph database. Such a system must support live updates (to ingest production information in real time), low-latency point queries (for frequent metadata operations such as permission checking), and large-scale traversals (for provenance data mining). Large-scale property graph traversals are particularly challenging for distributed graph databases, however. Most existing graph databases implement a "level-synchronous" breadth-first search algorithm that relies on global synchronization in each traversal step. This traversal model performs well in many problem domains; but a rich metadata management system is characterized by imbalanced graphs, long traversal lengths, and concurrent workloads, each of which has the potential to introduce or exacerbate stragglers. We define stragglers as abnormally slow steps (or servers) in a graph traversal that lead to low overall throughput for synchronous traversal algorithms. The straggler problem can be mitigated by the use of asynchronous traversal algorithms. Asynchronous traversal has been successfully demonstrated in graph processing frameworks, but such systems require the graph to be loaded into a separate batch-processing framework. In this work, we propose GraphTrek, a general asynchronous graph traversal engine working with graph databases for processing rich metadata management in their native format. We also outline a traversal-aware query language and key optimizations (traversal-affiliate caching and execution merging) necessary for efficient performance. Our experiments show that the asynchronous graph traversal engine is more efficient than its synchronous counterpart in the case of HPC rich metadata processing, where more servers are involved and larger traversals are needed. C1 [Dai, Dong; Blauer, Kyle; Chen, Yong] Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA. [Carns, Philip; Ross, Robert B.; Jenkins, John] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. RP Dai, D (reprint author), Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA. EM dong.dai@ttu.edu; carns@mcs.anl.gov; rross@mcs.anl.gov; jenkins@mcs.anl.gov; kyle.blauer@ttu.edu; yong.chen@ttu.edu NR 39 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 284 EP 293 DI 10.1109/CLUSTER.2015.48 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100037 ER PT S AU Danalis, A Jagode, H Bosilca, G Dongarra, J AF Danalis, Anthony Jagode, Heike Bosilca, George Dongarra, Jack GP IEEE TI PaRSEC in Practice: Optimizing a legacy Chemistry application through distributed task-based execution SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE PaRSEC; Tasks; DAG; PTG ID COUPLED-CLUSTER; PERFORMANCE; ENGINE AB Task-based execution has been growing in popularity as a means to deliver a good balance between performance and portability in the post-petascale era. The Parallel Runtime Scheduling and Execution Control (PARSEC) framework is a task-based runtime system that we designed to achieve high performance computing at scale. PARSEC offers a programming paradigm that is different than what has been traditionally used to develop large scale parallel scientific applications. In this paper, we discuss the use of PARSEC to convert a part of the Coupled Cluster (CC) component of the Quantum Chemistry package NWCHEM into a task-based form. We explain how we organized the computation of the CC methods in individual tasks with explicitly defined data dependencies between them and re-integrated the modified code into NWCHEM. We present a thorough performance evaluation and demonstrate that the modified code outperforms the original by more than a factor of two. We also compare the performance of different variants of the modified code and explain the different behaviors that lead to the differences in performance. C1 [Danalis, Anthony; Jagode, Heike; Bosilca, George; Dongarra, Jack] Univ Tennessee, ICL, Knoxville, TN 37996 USA. [Dongarra, Jack] Oak Ridge Natl Lab, Oak Ridge, TN USA. [Dongarra, Jack] Univ Manchester, Manchester, Lancs, England. RP Danalis, A (reprint author), Univ Tennessee, ICL, Knoxville, TN 37996 USA. NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 304 EP 313 DI 10.1109/CLUSTER.2015.50 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100039 ER PT S AU Dosanjh, MGF Grant, RE Bridges, PG Brightwell, R AF Dosanjh, Matthew G. F. Grant, Ryan E. Bridges, Patrick G. Brightwell, Ron GP IEEE TI Re-evaluating Network Onload vs. Offload for the Many-Core Era SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp ID PERFORMANCE AB This paper explores the trade-offs between on loaded versus offloaded network stack processing for systems with varying CPU frequencies. This study explores the differences of onload and offload using experiments run at different DVFS settings to change the frequency, while measuring performance and power. This allows for a quantitative comparison of the the performance and power and trade-offs between onload and offload cards, with a wide range of CPU performances. The results show that there is often a significant performance increase in using offloaded cards especially at lower CPU frequencies, with only a small increase in power usage. This study also uses MPI profiling to analyze why some applications see a larger benefit than others. This paper's contributions are an analytical, quantitative analysis of the trade-offs between onload and offload. While there has been debate to this question, this is the first, to the authors' knowledge, analytical evaluation of the performance difference. The range of frequencies analyzed give insight on how this MPI might perform on different architectures, such as the low frequency, many-core CPUs. Finally, the power measurements allow for the study to provide further depth in the analysis. C1 [Dosanjh, Matthew G. F.; Bridges, Patrick G.] Univ New Mexico, Dept Comp Sci, Scalable Syst Lab, Albuquerque, NM 87131 USA. [Grant, Ryan E.; Brightwell, Ron] Sandia Natl Labs, Ctr Res Comp, Albuquerque, NM 87185 USA. RP Dosanjh, MGF (reprint author), Univ New Mexico, Dept Comp Sci, Scalable Syst Lab, Albuquerque, NM 87131 USA. EM mdosanjh@cs.unm.edu; regrant@sandia.gov; bridges@cs.unm.edu; rbbrigh@sandia.gov NR 32 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 342 EP 350 DI 10.1109/CLUSTER.2015.55 PG 9 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100044 ER PT S AU Mollah, MA Yuan, X Pakin, S Lang, M AF Mollah, Md Atiqul Yuan, Xin Pakin, Scott Lang, Michael GP IEEE TI Fast Calculation of Max-min Fair Rates for Multi-commodity Flows in Fat-tree Networks SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE max-min fairness; fat-tree topology; high-performance computing AB Max-min fairness is often used in the performance modeling of interconnection networks. Existing methods to compute max-min fair rates for multi commodity flows have high complexity and are computationally infeasible for large networks. In this work, we show that by considering topological features, this problem can be solved efficiently for the fat-tree topology that is widely used in data centers and high performance computing clusters. Using two new algorithms that we developed, we demonstrate it is possible to find the max-min fair rate allocation for multi-commodity flows in fat-tree networks that support tens of thousands of nodes. We evaluate the run-time performance of the proposed algorithms and demonstrate an application. C1 [Mollah, Md Atiqul; Yuan, Xin] Florida State Univ, Dept Comp Sci, Tallahassee, FL 32306 USA. [Pakin, Scott; Lang, Michael] Los Alamos Natl Lab, Comp Computat & Stat Sci Div, Los Alamos, NM 87545 USA. RP Mollah, MA (reprint author), Florida State Univ, Dept Comp Sci, Tallahassee, FL 32306 USA. EM mollah@cs.fsu.edu; xyuan@cs.fsu.edu; pakin@lanl.gov; mlang@lanl.gov OI Pakin, Scott/0000-0002-5220-1985 NR 12 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 351 EP 360 DI 10.1109/CLUSTER.2015.56 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100045 ER PT S AU Hastings, E Rincon-Cruz, D Spehlmann, M Meyers, S Xu, A Bunde, DP Leung, VJ AF Hastings, Emily Rincon-Cruz, David Spehlmann, Marc Meyers, Sofia Xu, Anda Bunde, David P. Leung, Vitus J. GP IEEE TI Comparing global link arrangements for Dragonfly networks SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE Dragonfly; parallel interconnect topology; bisection bandwidth; task mapping AB High-performance computing systems are shifting away from traditional interconnect topologies to exploit new technologies and to reduce interconnect power consumption. The Dragonfly topology is one promising candidate for new systems, with several variations already in production. It is hierarchical, with local links forming groups and global links joining the groups. At each level, the interconnect is a clique, with a link between each pair of switches in a group and a link between each pair of groups. This paper shows that the intergroup links can be made in meaningfully different ways. We evaluate three previously proposed approaches for link organization (called global link arrangements) in two ways. First, we use bisection bandwidth, an important and commonly-used measure of the potential for communication bottlenecks. We show that the global link arrangements often give bisection bandwidths differing by 10s of percent, with the specific separation varying based on the relative bandwidths of local and global links. For the link bandwidths used in a current Dragonfly implementation, it is 33%. Second, we show that the choice of global link arrangement can greatly impact the regularity of task mappings for nearest neighbor stencil communication patterns, an important pattern in scientific applications. C1 [Hastings, Emily; Rincon-Cruz, David; Spehlmann, Marc; Meyers, Sofia; Xu, Anda; Bunde, David P.] Knox Coll, Dept Comp Sci, Galesburg, IL 61401 USA. [Leung, Vitus J.] Sandia Natl Labs, Discrete Math & Optimizat Dept, Albuquerque, NM 87185 USA. RP Hastings, E (reprint author), Knox Coll, Dept Comp Sci, Galesburg, IL 61401 USA. EM emhastings@knox.edu; drinconcruz@knox.edu; mspehlma@knox.edu; semeyers@knox.edu; axu@knox.edu; dbunde@knox.edu; vjleung@sandia.gov NR 26 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 361 EP 370 DI 10.1109/CLUSTER.2015.57 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100046 ER PT S AU Azad, A Buluc, A AF Azad, Ariful Buluc, Aydin GP IEEE TI Distributed-Memory Algorithms for Maximal Cardinality Matching using Matrix Algebra SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp ID RELABEL BASED ALGORITHMS; PARALLEL; ARCHITECTURES AB We design and implement distributed-memory parallel algorithms for computing maximal cardinality matching in a bipartite graph. Relying on matrix algebra building blocks, our algorithms expose a higher degree of parallelism on distributed memory platforms than existing graph-based algorithms. In contrast to existing parallel algorithms, empirical approximation ratios of the new algorithms are insensitive to concurrency and stay relatively constant with increasing processor counts. On real instances, our algorithms achieve up to 300 x speedup on 1024 cores of a Cray XC30 supercomputer. Even higher speedups are obtained on larger synthetically generated graphs where our algorithms show good scaling on up to 16,384 processors. C1 [Azad, Ariful; Buluc, Aydin] Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. RP Azad, A (reprint author), Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. EM azad@lbl.gov; abuluc@lbl.gov NR 25 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 398 EP 407 DI 10.1109/CLUSTER.2015.62 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100051 ER PT S AU Gahvari, H Schulz, M Yang, UM AF Gahvari, Hormozd Schulz, Martin Yang, Ulrike Meier GP IEEE TI An Approach to Selecting Thread plus Process Mixes for Hybrid MPI plus OpenMP Applications SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB Hybrid MPI + OpenMP is a popular means of programming modern machines that feature substantial parallelism both off-node and on-node. Determining the right mix of the two programming models to use, however, is not as straightforward as simply using exclusively OpenMP on node and limiting MPI to only inter-node communication. We present a step-by-step methodology to help make the decision of which mix of the two programming models to use. It starts with an estimate of the performance of a generic hybrid application on a given machine and incorporates additional available information about the specific application and the machine to provide guidance for selecting effective mixes of MPI processes and OpenMP threads to use when running that application on the machine in question. We validate our approach on four different applications on an IBM Blue Gene/Q, a Cray XK7, and a Cray XC30. C1 [Gahvari, Hormozd; Schulz, Martin; Yang, Ulrike Meier] Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA. RP Gahvari, H (reprint author), Lawrence Livermore Natl Lab, Ctr Appl Sci Comp, Livermore, CA 94550 USA. EM gahvari1@llnl.gov; schulzm@llnl.gov; umyang@llnl.gov NR 23 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 418 EP 427 DI 10.1109/CLUSTER.2015.64 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100053 ER PT S AU Akhmetova, D Kestor, G Gioiosa, R Markidis, S Laure, E AF Akhmetova, Dana Kestor, Gokcen Gioiosa, Roberto Markidis, Stefano Laure, Erwin GP IEEE TI On the application task granularity and the interplay with the scheduling overhead in many-core shared memory systems SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB Task-based programming models are considered one of the most promising programming model approaches for exascale supercomputers because of their ability to dynamically react to changing conditions and reassign work to processing elements. One question, however, remains unsolved: what should the task granularity of task-based applications be? Finegrained tasks offer more opportunities to balance the system and generally result in higher system utilization. However, they also induce in large scheduling overhead. The impact of scheduling overhead on coarse-grained tasks is lower, but large systems may result imbalanced and underutilized. In this work we propose a methodology to analyze the interplay between application task granularity and scheduling overhead. Our methodology is based on three main points: 1) a novel task algorithm that analyzes an application directed acyclic graph (DAG) and aggregates tasks; 2) a fast and precise emulator to analyze the application behavior on systems with up to 1,024 cores; 3) a comprehensive sensitivity analysis of application performance and scheduling overhead breakdown. Our results show that there is an optimal task granularity between 1.2x10(4) and 10x10(4) cycles for the representative schedulers. Moreover, our analysis indicates that a suitable scheduler for exascale task-based applications should employ a best-effort local scheduler and a sophisticated remote scheduler to move tasks across worker threads. C1 [Akhmetova, Dana; Kestor, Gokcen; Gioiosa, Roberto] Pacific NW Natl Lab, High Performance Comp, Richland, WA 99352 USA. [Markidis, Stefano; Laure, Erwin] KTH Royal Inst Technol, High Performance Comp & Visualizat Dept, Stockholm, Sweden. RP Akhmetova, D (reprint author), Pacific NW Natl Lab, High Performance Comp, Richland, WA 99352 USA. EM dana.akhmetova@pnnl.gov; gokcen.kestor@pnnl.gov; roberto.gioiosa@pnnl.gov; markidis@pnnl.gov; erwinl@pdc.kth.se NR 23 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 428 EP 437 DI 10.1109/CLUSTER.2015.65 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100054 ER PT S AU Fujita, H Iskra, K Balaji, P Chien, AA AF Fujita, Hajime Iskra, Kamil Balaji, Pavan Chien, Andrew A. GP IEEE TI Empirical Comparison of Three Versioning Architectures SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp ID PERFORMANCE AB Future supercomputer systems will face serious reliability challenges. Among failure scenarios, latent errors are some of the most serious and concerning. Preserving multiple versions of critical data is a promising approach to deal with such errors. We are developing the Global View Resilience (GVR) library, with multi-version global arrays as one of the key features. This paper presents three array versioning architectures: flat array, flat array with change tracking, and log-structured array. We use a synthetic workload comparing the three array architectures in terms of runtime performance and memory requirements. The experiments show that the flat array with change tracking is the best architecture in terms of runtime performance, for versioning frequencies of 10(-5) ops(-1) or higher matching the second best architecture or beating it by over 8 times, whereas the log-structured array is preferable for low memory usage, since it saves up to 88% of memory compared with a flat array. C1 [Fujita, Hajime; Chien, Andrew A.] Univ Chicago, Dept Comp Sci, 1100 East 58th St, Chicago, IL 60637 USA. [Fujita, Hajime; Iskra, Kamil; Balaji, Pavan; Chien, Andrew A.] Argonne Natl Lab, Math & Comp Sci Div, Argonne, IL 60439 USA. RP Fujita, H (reprint author), Univ Chicago, Dept Comp Sci, 1100 East 58th St, Chicago, IL 60637 USA. EM hfujita@cs.uchicago.edu; iskra@mcs.anl.gov; balaji@anl.gov; achien@cs.uchicago.edu NR 16 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 456 EP 459 DI 10.1109/CLUSTER.2015.69 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100058 ER PT S AU Agelastos, A Allan, B Brandt, J Gentile, A Lefantzi, S Monk, S Ogden, J Rajan, M Stevenson, J AF Agelastos, Anthony Allan, Benjamin Brandt, Jim Gentile, Ann Lefantzi, Sophia Monk, Steve Ogden, Jeff Rajan, Mahesh Stevenson, Joel GP IEEE TI Toward Rapid Understanding of Production HPC Applications and Systems SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE High Performance Computing; Monitoring AB A detailed understanding of HPC application's resource needs and their complex interactions with each other and HPC platform resources is critical to achieving scalability and performance. Such understanding has been difficult to achieve because typical application profiling tools do not capture the behaviors of codes under the potentially wide spectrum of actual production conditions and because typical monitoring tools do not capture system resource usage information with high enough fidelity to gain sufficient insight into application performance and demands. In this paper we present both system and application profiling results based on data obtained through synchronized system wide monitoring on a production HPC cluster at Sandia National Laboratories (SNL). We demonstrate analytic and visualization techniques that we are using to characterize application and system resource usage under production conditions for better understanding of application resource needs. Our goals are to improve application performance (through understanding application-to-resource mapping and system throughput) and to ensure that future system capabilities match their intended workloads. C1 [Agelastos, Anthony; Allan, Benjamin; Brandt, Jim; Gentile, Ann; Lefantzi, Sophia; Monk, Steve; Ogden, Jeff; Rajan, Mahesh; Stevenson, Joel] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. RP Agelastos, A (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM amagela@sandia.gov; baallan@sandia.gov; brandt@sandia.gov; gentile@sandia.gov; slefant@sandia.gov; smonk@sandia.gov; jbogden@sandia.gov; mrajan@sandia.gov; josteve@sandia.gov NR 7 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 464 EP 473 DI 10.1109/CLUSTER.2015.71 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100060 ER PT S AU Wozniak, JM Armstrong, TG Maheshwari, KC Katz, DS Wilde, M Foster, IT AF Wozniak, Justin M. Armstrong, Timothy G. Maheshwari, Ketan C. Katz, Daniel S. Wilde, Michael Foster, Ian T. GP IEEE TI Toward Interlanguage Parallel Scripting for Distributed-Memory Scientific Computing SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB Scripting languages such as Python and R have been widely adopted as tools for the productive development of scientific software because of the power and expressiveness of the languages and available libraries. However, deploying scripted applications on large-scale parallel computer systems such as the IBM Blue Gene/Q or Cray XE6 is a challenge because of issues including operating system limitations, interoperability challenges, parallel filesystem overheads due to the small file system accesses common in scripted approaches, and other issues. We present here a new approach to these problems in which the Swift scripting system is used to integrate high-level scripts written in Python, R, and Tcl, with native code developed in C, C++, and Fortran, by linking Swift to the library interfaces to the script interpreters. In this approach, Swift handles data management, movement, and marshaling among distributed-memory processes without direct user manipulation of low-level communication libraries such as MPI. We present a technique to efficiently launch scripted applications on large-scale supercomputers using a hierarchical programming model. C1 [Wozniak, Justin M.; Maheshwari, Ketan C.; Wilde, Michael; Foster, Ian T.] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. [Armstrong, Timothy G.; Foster, Ian T.] Univ Chicago, Dept Comp Sci, Chicago, IL 60637 USA. [Wozniak, Justin M.; Katz, Daniel S.; Wilde, Michael; Foster, Ian T.] Univ Chicago, Computat Inst, Chicago, IL 60637 USA. [Wozniak, Justin M.; Katz, Daniel S.; Wilde, Michael; Foster, Ian T.] Argonne Natl Lab, Chicago, IL 60611 USA. RP Wozniak, JM (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 482 EP 485 DI 10.1109/CLUSTER.2015.74 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100063 ER PT S AU Yue, K Nicholas, S Jonathan, ZT AF Yue, Ke Nicholas, Schwarz Jonathan, Tischler Z. GP IEEE TI Accelerating Laue Depth Reconstruction Algorithm With CUDA SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB The Laue diffraction microscopy [1] experiment uses the polychromatic Laue micro-diffraction technique to examine the structure of materials with sub-micron spatial resolution in all three dimensions. During this experiment, local crystallographic orientations, orientation gradients and strains are measured as properties which will be recorded in HDF5 image format [2]. The recorded images will be processed with a depth reconstruction algorithm for future data analysis. But the current depth reconstruction algorithm consumes considerable processing time and might take up to 2 weeks for reconstructing data collected from one single experiment. To improve the depth reconstruction computation speed, we propose a scalable GPU program solution on the depth reconstruction problem in this paper. The test result shows that the running time would be 10 to 20 times faster than the prior CPU design for various size of input data. C1 [Yue, Ke; Nicholas, Schwarz; Jonathan, Tischler Z.] Argonne Natl Lab, Dept APS, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Yue, K (reprint author), Argonne Natl Lab, Dept APS, 9700 S Cass Ave, Argonne, IL 60439 USA. EM kyue@aps.anl.gov; nschwarz@aps.anl.gov; tischler@aps.anl.gov NR 3 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 492 EP 493 DI 10.1109/CLUSTER.2015.78 PG 2 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100067 ER PT S AU Li, TL Ma, CQ Li, JB Zhou, XB Wang, K Zhao, DF Sadooghi, I Raicu, I AF Li, Tonglin Ma, Chaoqi Li, Jiabao Zhou, Xiaobing Wang, Ke Zhao, Dongfang Sadooghi, Iman Raicu, Ioan GP IEEE TI GRAPH/Z: A Key-Value Store Based Scalable Graph Processing System SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB The emerging applications in big data and social networks issue rapidly increasing demands on graph processing. Graph query operations that involve a large number of vertices and edges can be tremendously slow on traditional databases. The state-of-the-art graph processing systems and databases usually adopt master/slave architecture that potentially impairs their scalability. This work describes the design and implementation of a new graph processing system based on Bulk Synchronous Parallel model. Our system is built on top of ZHT, a scalable distributed key-value store, which benefits the graph processing in terms of scalability, performance and persistency. The experiment results imply excellent scalability. C1 [Li, Tonglin; Ma, Chaoqi; Li, Jiabao; Wang, Ke; Zhao, Dongfang; Sadooghi, Iman; Raicu, Ioan] IIT, Chicago, IL 60616 USA. [Raicu, Ioan] Argonne Natl Lab, Argonne, IL 60439 USA. [Zhou, Xiaobing] Hortonworks, Santa Clara, CA USA. RP Li, TL (reprint author), IIT, Chicago, IL 60616 USA. NR 35 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 516 EP 517 DI 10.1109/CLUSTER.2015.90 PG 2 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100078 ER PT S AU Rizzi, F Morris, K Sargsyan, K Mycek, P Safta, C LeMaitre, O Knio, O Debusschere, B AF Rizzi, F. Morris, K. Sargsyan, K. Mycek, P. Safta, C. LeMaitre, O. Knio, O. Debusschere, B. GP IEEE TI Partial Differential Equations Preconditioner Resilient to Soft and Hard Faults SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE Resilience; Scientific computing; Supercomputers; Parallel programming; Distributed computing; Client-server systems; High performance computing; Parallel algorithms; Software engineering; Fault tolerance; Message passing; Fault tolerant systems; Partial differential equations ID TOLERANCE AB We present a domain-decomposition-based pre-conditioner for the solution of partial differential equations (PDEs) that is resilient to both soft and hard faults. The algorithm is based on the following steps: first, the computational domain is split into overlapping subdomains; second, the target PDE is solved on each subdomain for sampled values of the local current boundary conditions; third, the subdomain solution samples are collected and fed into a regression step to build maps between the subdomains' boundary conditions; finally, the intersection of these maps yields the updated state at the subdomain boundaries. This reformulation allows us to recast the problem as a set of independent tasks. The implementation relies on an asynchronous server-client framework, where one or more reliable servers hold the data, while the clients ask for tasks and execute them. This framework provides resiliency to hard faults such that if a client crashes, it stops asking for work, and the servers simply distribute the work among all the other clients alive. Erroneous subdomain solves (e.g. due to soft faults) appear as corrupted data, which is either rejected if that causes a task to fail, or is seamlessly filtered out during the regression stage through a suitable noise model. Three different types of faults are modeled: hard faults modeling nodes (or clients) crashing; soft faults occurring during the communication of the tasks between server and clients; and soft faults occurring during task execution. We demonstrate the resiliency of the approach for a 2D elliptic PDE, and explore the effect of the faults at various failure rates. C1 [Rizzi, F.; Morris, K.; Sargsyan, K.; Safta, C.; Debusschere, B.] Sandia Natl Labs, Livermore, CA 94551 USA. [Mycek, P.; LeMaitre, O.; Knio, O.] Duke Univ, Durham, NC USA. RP Rizzi, F (reprint author), Sandia Natl Labs, Livermore, CA 94551 USA. EM fnrizzi@sandia.gov; knmorri@sandia.gov; ksargsy@sandia.gov; paul.mycek@duke.edu; csafta@sandia.gov; olivier.le.maitre@duke.edu; omar.knio@duke.edu; bjdebus@sandia.gov RI Le Maitre, Olivier/D-8570-2011; OI Le Maitre, Olivier/0000-0002-3811-7787; Mycek, Paul/0000-0002-6919-112X NR 24 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 552 EP 562 DI 10.1109/CLUSTER.2015.103 PG 11 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100093 ER PT S AU Martsinkevich, T Subasi, O Unsal, O Labarta, J Cappello, F AF Martsinkevich, Tatiana Subasi, Omer Unsal, Osman Labarta, Jesus Cappello, Franck GP IEEE TI Fault-tolerant protocol for hybrid task-parallel message-passing applications SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE fault tolerance; high performance computing; message logging; checkpointing; task-based programming model; dataflow model AB We present a fault-tolerant protocol for task parallel message-passing applications to mitigate transient errors. The protocol requires the restart only of the task that experienced the error and transparently handles any MPI calls inside the task. The protocol is implemented in Nanos-a dataflow runtime for task-based OmpSs programming model-and the PMPI profiling layer to fully support hybrid OmpSs+MPI applications. In our experiments we demonstrate that our fault-tolerant solution has a reasonable overhead, with a maximum observed overhead of 4.5%. We also show that fine-grained parallelization is important for hiding the overheads related to the protocol as well as the recovery of tasks. C1 [Martsinkevich, Tatiana] Univ Paris 11, INRIA, Paris, France. [Subasi, Omer; Unsal, Osman; Labarta, Jesus] Barcelona Supercomp Ctr, Barcelona, Spain. [Cappello, Franck] Argonne Natl Lab, Argonne, IL 60439 USA. RP Martsinkevich, T (reprint author), Univ Paris 11, INRIA, Paris, France. EM tatiana.mar@inria.fr; omer.subasi@bsc.es; osman.unsal@bsc.es; jesus.labarta@bsc.es; cappello@mcs.anl.gov RI LABARTA, JESUS/G-5256-2015 OI LABARTA, JESUS/0000-0002-7489-4727 NR 23 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 563 EP 570 DI 10.1109/CLUSTER.2015.104 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100094 ER PT S AU Bernholdt, DE Elwasif, WR Kartsaklis, C Lee, S Mintz, TM AF Bernholdt, David E. Elwasif, Wael R. Kartsaklis, Christos Lee, Seyong Mintz, Tiffany M. GP IEEE TI Programmer-Guided Reliability for Extreme-Scale Applications SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp ID ALGORITHMS; RESILIENCE; SYSTEMS AB We present "programmer-guided reliability" (PGR) as a systematic conceptual approach to address the expected rise in soft errors in coming extreme-scale systems at the application level. The approach involves instrumentation of the application with code to detect data corruption errors. The location and nature of these error detectors are at the discretion of the programmer, who uses their knowledge and experience with the problem domain, the application, the solution algorithms, etc., to determine the most vulnerable areas of the code and the most appropriate ways to detect data corruption. To illustrate the approach, we provide examples of error detectors from four different benchmark-scale applications. We also describe a simple control framework that allows for runtime configuration of the error detectors without recompilation of the application, as well as dynamic reconfiguration during the execution of the application. Finally, we discuss a number of future directions building on the basic PGR approach, including the incorporation of some general error detectors into the programming environment in order to make them more easily usable by the programmer. C1 [Bernholdt, David E.; Elwasif, Wael R.; Kartsaklis, Christos; Lee, Seyong; Mintz, Tiffany M.] Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. RP Bernholdt, DE (reprint author), Oak Ridge Natl Lab, POB 2008, Oak Ridge, TN 37831 USA. EM bernholdtde@ornl.gov; elwasifwr@ornl.gov; kartsaklisc@ornl.gov; lees2@ornl.gov; mintztm@ornl.gov NR 50 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 571 EP 579 DI 10.1109/CLUSTER.2015.105 PG 9 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100095 ER PT S AU Bautista-Gomez, L Cappello, F AF Bautista-Gomez, Leonardo Cappello, Franck GP IEEE TI Detecting and Correcting Data Corruption in Stencil Applications through Multivariate Interpolation SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB High-performance computing is a powerful tool that allows scientists to study complex natural phenomena. Extremei-scale supercomputers promise orders of magnitude higher performance compared with that of current systems. However, power constrains in future exascale systems might limit the level of resilience of those machines. In particular, data could get corrupted silently, that is, without the hardware detecting the corruption. This situation is clearly unacceptable: simulation results must be within the error margin specified by the user. In this paper, we exploit multivariate interpolation in order to detect and correct data corruption in stencil applications. We evaluate this technique with a turbulent fluid application, and we demonstrate that the prediction error using multivariate interpolation is on the order of 10(-2). Our results show that this mechanism can detect and correct most important corruptions and keep the error deviation under 1% during the entire execution while injecting one corruption per minute. In addition, we stress test the detector by injecting more than ten corruptions per minute and observe that our strategy allows the application to produce results with an error deviation under 10% in such a stressful scenario. C1 [Bautista-Gomez, Leonardo; Cappello, Franck] Argonne Natl Lab, Argonne, IL 60439 USA. RP Bautista-Gomez, L (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM leobago@anl.gov; cappello@mcs.anl.gov OI Bautista-Gomez, Leonardo/0000-0002-0814-5779 NR 21 TC 2 Z9 2 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 595 EP 602 DI 10.1109/CLUSTER.2015.108 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100098 ER PT S AU Juve, G Tovar, B da Silva, RF Krol, D Thain, D Deelman, E Allcock, W Livny, M AF Juve, Gideon Tovar, Benjamin da Silva, Rafael Ferreira Krol, Dariusz Thain, Douglas Deelman, Ewa Allcock, William Livny, Miron GP IEEE TI Practical Resource Monitoring for Robust High Throughput Computing SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE High-Throughput Computing; Profiling; Monitoring ID SYSTEM AB Robust high throughput computing requires effective monitoring and enforcement of a variety of resources including CPU cores, memory, disk, and network traffic. Without effective monitoring and enforcement, it is easy to overload machines, causing failures and slowdowns, or underutilize machines, which results in wasted opportunities. This paper explores how to describe, measure, and enforce resources used by computational tasks. We focus on tasks running in distributed execution systems, in which a task requests the resources it needs, and the execution system ensures the availability of such resources. This presents two non-trivial problems: how to measure the resources consumed by a task, and how to monitor and report resource exhaustion in a robust and timely manner. For both of these tasks, operating systems have a variety of mechanisms with different degrees of availability, accuracy, overhead, and intrusiveness. We describe various forms of monitoring and the available mechanisms in contemporary operating systems. We then present two specific monitoring tools that choose different tradeoffs in overhead and accuracy, and evaluate them on a selection of benchmarks. C1 [Juve, Gideon; da Silva, Rafael Ferreira; Krol, Dariusz; Deelman, Ewa] Univ So Calif, Inst Informat Sci, Marina Del Rey, CA 90292 USA. [Tovar, Benjamin; Thain, Douglas] Univ Notre Dame, Notre Dame, IN 46556 USA. [Krol, Dariusz] AGH Univ Sci & Technol, Dept Comp Sci, PL-30059 Krakow, Poland. [Allcock, William] Argonne Natl Lab, Argonne, IL 60439 USA. [Livny, Miron] Univ Wisconsin, Madison, WI USA. RP Juve, G (reprint author), Univ So Calif, Inst Informat Sci, Marina Del Rey, CA 90292 USA. OI Ferreira da Silva, Rafael/0000-0002-1720-0928 NR 24 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 650 EP 657 DI 10.1109/CLUSTER.2015.115 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100105 ER PT S AU Brandt, J Gentile, A Martin, C Repik, J Taerat, N AF Brandt, J. Gentile, A. Martin, C. Repik, J. Taerat, N. GP IEEE TI New Systems, New Behaviors, New Patterns: Monitoring Insights from System Standup SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB Disentangling significant and important log messages from those that are routine and unimportant can be a difficult task. Further, on a new system, understanding correlations between significant and possibly new types of messages and conditions that cause them can require significant effort and time. The initial standup of a machine can provide opportunities for investigating the parameter space of events and operations and thus for gaining insight into the events of interest. In particular, failure inducement and investigation of corner case conditions can provide knowledge of system behavior for significant issues that will enable easier diagnosis and mitigation of such issues for when they may actually occur during the platform lifetime. In this work, we describe the testing process and monitoring results from a testbed system in preparation for the ACES Trinity system. We describe how events in the initial standup including changes in configuration and software and corner case testing has provided insights that can inform future monitoring and operating conditions, both of our test systems and the eventual large-scale Trinity system. C1 [Brandt, J.; Gentile, A.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Martin, C.] Los Alamos Natl Lab, Los Alamos, NM USA. [Repik, J.] Cray Inc, Seattle, WA USA. [Taerat, N.] Open Grid Comp, Austin, TX USA. RP Brandt, J (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. EM brandt@sandia.gov; gentile@sandia.gov; c_martin@lanl.gov; jjrepik@cray.com; narate@ogc.us NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 658 EP 665 DI 10.1109/CLUSTER.2015.116 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100106 ER PT S AU Grubel, P Kaiser, H Cook, J Serio, A AF Grubel, Patricia Kaiser, Hartmut Cook, Jeanine Serio, Adrian GP IEEE TI The Performance Implication of Task Size for Applications on the HPX Runtime System SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE Task Granularity; Task Scheduling; Task Parallelism; HPX; ParalleX AB As High Performance Computing moves toward Exascale, where parallel applications will be expected to run on millions of cores concurrently, every component of the computational model must perform optimally. One such component, the task scheduler, can potentially be optimized to runtime application requirements. We focus our study using a task-based runtime system, one possible solution towards Exascale computation. Based on task size and scheduler, the overheads associated with task scheduling vary. Therefore, to minimize overheads and optimize performance, either the task size or the scheduler must adapt. In this paper, we focus on adapting the task size, which can be easily done statically and potentially done dynamically. To this end, we first show how scheduling overheads change with task size or granularity. We then propose and execute a methodology to characterize these overheads and dynamically measure the effects of task granularity. The HPX runtime system [1] employs asynchronous fine-grained task scheduling and incorporates a dynamic performance modeling capability, providing an ideal experimental platform. Using the performance counter capabilities in HPX, we characterize task scheduling overheads and show metrics to determine optimal task size. This is the first step toward the goal of dynamically adapting task size to optimize parallel performance. C1 [Grubel, Patricia; Cook, Jeanine] New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88003 USA. [Kaiser, Hartmut; Serio, Adrian] Louisiana State Univ, Ctr Computat & Technol, Baton Rouge, LA 70803 USA. [Cook, Jeanine] Sandia Natl Labs, Livermore, CA 94550 USA. [Grubel, Patricia; Kaiser, Hartmut; Cook, Jeanine; Serio, Adrian] STE AR Grp Stellar Grp Org, Jacksonville, FL USA. RP Grubel, P (reprint author), New Mexico State Univ, Klipsch Sch Elect & Comp Engn, Las Cruces, NM 88003 USA. NR 20 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 682 EP 689 DI 10.1109/CLUSTER.2015.119 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100109 ER PT S AU Wallace, S Vishwanath, V Coghlan, S Lan, ZL Papka, ME AF Wallace, Sean Vishwanath, Venkatram Coghlan, Susan Lan, Zhiling Papka, Michael E. GP IEEE TI Comparison of Vendor Supplied Environmental Data Collection Mechanisms SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE Terms Environmental Data; Power Profiling; Blue Gene/Q; Intel Xeon Phi; NVML; RAPL AB The high performance computing landscape is filled with diverse hardware components. A large part of understanding how these components compare to others is by looking at the various environmental aspects of these devices such as power consumption, temperature, etc. Thankfully, vendors of these various pieces of hardware have supported this by providing mechanisms to obtain this data. However, differences not only in the way this data is obtained but also the data which is provided is common between products. In this paper, we take a comprehensive look at the data which is available for the most common pieces of today's HPC landscape, as well as how this data is obtained and how accurate it is. Having surveyed these components, we compare and contrast them noting key differences as well as providing insight into what features future components should have. C1 [Wallace, Sean; Lan, Zhiling] IIT, Chicago, IL 60616 USA. [Wallace, Sean; Vishwanath, Venkatram; Coghlan, Susan; Papka, Michael E.] Argonne Natl Lab, Argonne, IL 60439 USA. [Papka, Michael E.] No Illinois Univ, De Kalb, IL USA. RP Wallace, S (reprint author), IIT, Chicago, IL 60616 USA. EM swallac6@iit.edu; venkat@anl.gov; smc@anl.gov; lan@iit.edu; papka@anl.gov NR 16 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 690 EP 697 DI 10.1109/CLUSTER.2015.120 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100110 ER PT S AU DeConinck, A Kelly, K AF DeConinck, A. Kelly, K. GP IEEE TI Evolution of Monitoring Over the Lifetime of a High Performance Computing Cluster SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB High Performance Computer (HPC) systems typically have lifetimes of four to six years. During this lifetime a system will undergo substantial changes in the system software stack and hardware configuration. Simultaneously, the physical environment around it will change as old systems are retired and new systems are brought in. This report focuses on our experience with Mustang, a 1600 node Linux cluster at LANL. Over the three years we have operated Mustang, the machine and environment have changed substantially, which has resulted in reliability and stability issues on the cluster. In this report we present our experiences with standard monitoring and analysis tools available on Mustang since its installation, and how recent advances in our tools and usage have improved our ability to troubleshoot these issues and perform timely root cause analysis. These advances have both improved our management of existing installations as well as informed our hardware and tooling requirements for future systems. C1 [DeConinck, A.; Kelly, K.] Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. RP DeConinck, A (reprint author), Los Alamos Natl Lab, POB 1663, Los Alamos, NM 87544 USA. EM ajdecon@lanl.gov; kak@lanl.gov OI DeConinck, Adam/0000-0003-2592-8983 NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 710 EP 713 DI 10.1109/CLUSTER.2015.123 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100113 ER PT S AU Moore, CL Khalsa, PS Yilk, TA Mason, M AF Moore, Christopher Lee Khalsa, Prabhu Singh Yilk, Todd Alan Mason, Michael GP IEEE TI Monitoring High Performance Computing Systems for the End User SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE HPC; Monitoring; AMQP; End Users; Open Lorenz AB Monitoring High Performance Computing clusters is currently geared towards providing system administrators the information they need to make informed decisions on the resources used in the cluster. However, this emphasis leaves out the End User, those who utilize the cluster resources towards projects and programs, as they are not given the information of how their workflow is impacting the cluster. By providing a subset of monitoring data in a format End Users can easily interpret and utilize, they can help make better use of the computing resources provided to them. C1 [Moore, Christopher Lee; Khalsa, Prabhu Singh; Yilk, Todd Alan; Mason, Michael] Los Alamos Natl Lab, High Performance Comp Grp 3, POB 1663, Los Alamos, NM 87544 USA. RP Moore, CL (reprint author), Los Alamos Natl Lab, High Performance Comp Grp 3, POB 1663, Los Alamos, NM 87544 USA. EM cmoore@lanl.gov; prabhu@lanl.gov; tyilk@lanl.gov; mmason@lanl.gov NR 6 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 714 EP 716 DI 10.1109/CLUSTER.2015.124 PG 3 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100114 ER PT S AU Feldman, S Zhang, DL Dechev, D Brandt, J AF Feldman, Steven Zhang, Deli Dechev, Damian Brandt, James GP IEEE TI Extending LDMS to Enable Performance Monitoring in Multi-Core Applications SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB Identifying design patterns that limit the performance of multi-core algorithms is a challenging task. There are many known methods by which threads synchronize their actions and each method may exhibit different behavior in different use cases. These use cases may vary in regards to the workload being executed, number of parallel tasks, dependencies between these tasks, and the behavior of the system scheduler. Restructuring algorithms to overcome performance limitations requires intimate knowledge on how these algorithms utilize the hardware. In our experience, we have found a lack of adequate tools to gain such knowledge. To address this, we have enhanced and implemented additional data sampler modules for OVIS's [1] Lightweight Distributed Metric Service (LDMS) [2] to enable scalable distributed collection of hardware performance counter data. These modules provide an interface by which LDMS can utilize the PAPI library, Linux perf tools, and RAPL to collect hardware performance data of interest. Using these samplers, we plan to monitor the intra-node behavior, including contention for node level shared resources, of multi-core applications for a diverse set of use cases. We are currently exploring how the values reported are affected by the level of concurrency, the synchronization methodologies, and progress guarantees. We hope to use this information to identify ways to restructure algorithms to increase their performance. C1 [Feldman, Steven; Zhang, Deli; Dechev, Damian] Univ Cent Florida, Orlando, FL 32816 USA. [Brandt, James] Sandia Natl Labs, Livermore, CA USA. RP Feldman, S (reprint author), Univ Cent Florida, Orlando, FL 32816 USA. EM dechev@eecs.ucf.edu; brandt@sandia.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 717 EP 720 DI 10.1109/CLUSTER.2015.125 PG 4 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100115 ER PT S AU Ferenbaugh, CR AF Ferenbaugh, Charles R. GP IEEE TI Performance Evaluation of Unstructured Mesh Physics on Advanced Architectures SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB Unstructured mesh physics codes tend to exhibit different performance characteristics than other types of codes such as structured mesh or particle codes, due to their heavy use of indirection arrays and their irregular memory access patterns. For this reason unstructured mesh mini-apps are needed, alongside other types of mini-apps, to evaluate new architectures and hardware features. This paper uses one such mini-app, PENNANT, to investigate performance trends on architectures such as the Intel Xeon Phi, IBM BlueGene/Q, and NVIDIA K40 GPU. We present basic results comparing the performance of these platforms to each other and to traditional multicore CPUs. We also study the usefulness for unstructured codes of various hardware features such as hardware threading, advanced vector instructions, and fast atomic operations. C1 [Ferenbaugh, Charles R.] Los Alamos Natl Lab, Sci Software Engn Grp, HPC 1, POB 1663, Los Alamos, NM 87545 USA. RP Ferenbaugh, CR (reprint author), Los Alamos Natl Lab, Sci Software Engn Grp, HPC 1, POB 1663, Los Alamos, NM 87545 USA. EM cferenba@lanl.gov NR 8 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 721 EP 728 DI 10.1109/CLUSTER.2015.126 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100116 ER PT S AU Vaughan, CT Barrett, RF AF Vaughan, Courtenay T. Barrett, Richard F. GP IEEE TI Enabling Tractable Exploration of the Performance of Adaptive Mesh Refinement SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp DE High performance computing; adaptive mesh refinement; scientific applications; parallel architectures; performance evaluation AB A broad range of physical phenomena in science and engineering can be explored using finite difference and volume based application codes. Incorporating Adaptive Mesh Refinement (AMR) into these codes focuses attention on the most critical parts of a simulation, enabling increased numerical accuracy of the solution while limiting memory consumption. However, adaptivity comes at the cost of increased runtime complexity, which is particularly challenging on emerging and expected future architectures. In order to explore the design space offered by new computing environments, we have developed a proxy application called miniAMR. MiniAMR exposes a range of the important issues that will significantly impact the performance potential of full application codes. In this paper, we describe miniAMR, demonstrate what is designed to represent in a full application code, and illustrate how it can be used to exploit future high performance computing architectures. To ensure an accurate understanding of what miniAMR is intended to represent, we compare it with CTH, a shock hydrodynamics code in heavy use throughout several computational science and engineering communities. C1 [Vaughan, Courtenay T.; Barrett, Richard F.] Sandia Natl Labs, Ctr Res Comp, POB 5800, Albuquerque, NM 87185 USA. RP Vaughan, CT (reprint author), Sandia Natl Labs, Ctr Res Comp, POB 5800, Albuquerque, NM 87185 USA. EM ctvaugh@sandia.gov; rfbarre@sandia.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 746 EP 752 DI 10.1109/CLUSTER.2015.129 PG 7 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100119 ER PT S AU Messer, OEB D'Azevedo, E Hill, J Joubert, W Laosooksathit, S Tharrington, A AF Messer, O. E. B. D'Azevedo, E. Hill, J. Joubert, W. Laosooksathit, S. Tharrington, A. GP IEEE TI Developing MiniApps on Modern Platforms Using Multiple Programming Models SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp AB We have developed a set of reduced, proxy applications (MiniApps) based on large-scale application codes supported at the Oak Ridge Leadership Computing Facility (OLCF). The MiniApps are designed to encapsulate the details of the most important (i.e. the most time-consuming and/or unique) facets of the applications that run in production mode on the OLCF. In each case, we have produced or plan to produce individual versions of the MiniApps using different specific programming models (e.g., OpenACC, CUDA, OpenMP). We describe some of our initial observations regarding these different implementations along with estimates of how closely the MiniApps track the actual performance characteristics (in particular, the overall scalability) of the large-scale applications from which they are derived. C1 [Messer, O. E. B.; D'Azevedo, E.; Hill, J.; Joubert, W.; Laosooksathit, S.; Tharrington, A.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Messer, O. E. B.] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA. RP Messer, OEB (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. RI Messer, Bronson/G-1848-2012 OI Messer, Bronson/0000-0002-5358-5415 NR 17 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 753 EP 759 DI 10.1109/CLUSTER.2015.130 PG 7 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100120 ER PT S AU Bui, H Johnson, A Jacob, R Malakar, P Vishwanath, V Papka, ME Leigh, J AF Bui, Huy Johnson, Andrew Jacob, Robert Malakar, Preeti Vishwanath, Venkatram Papka, Michael E. Leigh, Jason GP IEEE TI Multipath Load Balancing for M x N Communication Patterns on the Blue Gene/Q Supercomputer Interconnection Network SO 2015 IEEE INTERNATIONAL CONFERENCE ON CLUSTER COMPUTING - CLUSTER 2015 SE IEEE International Conference on Cluster Computing LA English DT Proceedings Paper CT IEEE International Conference on Cluster Computing (CLUSTER) CY SEP 08-12, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, Argonne Natl Lab, U S Dept Energy, DDN Storage, CRAY, Penguin Comp ID SYSTEM MODEL; ALGORITHM AB Achievable networking performance of applications in a supercomputer depends on factors such as the communication patterns of the application and the routing algorithms used by the underlying supercomputer's interconnect. In order to achieve the highest networking performance for a application, the routing algorithms need to be designed optimally for the application's communication patterns. However, while communication patterns typically vary from application to application and even within various phases in an application, the underlying system routing algorithms have very limited variation and usually are optimized for common communication patterns. This results in high networking performance for these common communication patterns, however, results in low networking performance for others. In this paper, we present approaches for improving networking performance for a variety of communication patterns by rebalancing load on physical links on the Blue Gene/Q supercomputer. We realize our approaches in a framework called OPTIQ and demonstrate the efficacy of our framework via a set of benchmarks on the Blue Gene/Q supercomputer. Our results show that we can achieve 30% higher throughput using patterns from a real application. The improvement can be up to several times higher throughput than default MPI_Alltoallv used in the Blue Gene Q supercomputer for certain communication patterns. C1 [Bui, Huy; Johnson, Andrew] Univ Illinois, Dept Comp Sci, Chicago, IL 60607 USA. [Jacob, Robert; Malakar, Preeti; Vishwanath, Venkatram; Papka, Michael E.] Argonne Natl Lab, Argonne, IL 60439 USA. [Vishwanath, Venkatram; Papka, Michael E.] No Illinois Univ, De Kalb, IL 60115 USA. [Leigh, Jason] Univ Hawaii Manoa, Dept Comp Sci, Honolulu, HI 96822 USA. RP Bui, H (reprint author), Univ Illinois, Dept Comp Sci, Chicago, IL 60607 USA. EM abui4@uic.edu; ajohnson@uic.edu; jacob@mcs.anl.gov; pmalakar@anl.gov; venkat@anl.gov; papka@anl.gov; leigh@hawaii.edu NR 16 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1552-5244 BN 978-1-4673-6598-7 J9 IEEE INT C CL COMP PY 2015 BP 833 EP 840 DI 10.1109/CLUSTER.2015.140 PG 8 WC Computer Science, Hardware & Architecture SC Computer Science GA BF0FG UT WOS:000378648100130 ER PT J AU Akasiadis, C Panagidi, K Panagiotou, N Sernani, P Morton, A Vetsikas, IA Mavrouli, L Goutsias, K AF Akasiadis, Charilaos Panagidi, Kakia Panagiotou, Nikolaos Sernani, Paolo Morton, April Vetsikas, Ioannis A. Mavrouli, Lora Goutsias, Konstantinos GP IEEE TI Incentives for Rescheduling Residential Electricity Consumption to Promote Renewable Energy Usage SO 2015 SAI INTELLIGENT SYSTEMS CONFERENCE (INTELLISYS) LA English DT Proceedings Paper CT SAI Intelligent Systems Conference (IntelliSys) CY NOV 10-11, 2015 CL Sci & Informat Org, London, ENGLAND SP HPCC Syst, nVIDIA, SIEMENS, IEEE, Inst Engn & Technol, BigML, Stratified Med, HERE HO Sci & Informat Org DE Demand-side Management; Serious Games; Multi-agent Systems ID BUILDING ENERGY; MANAGEMENT AB Managing energy consumption and production is a challenging problem and proactive balancing between the amount of electricity produced and consumed is needed. In this work, we examine mechanisms that give incentives to consumers to efficiently reschedule their demand, thus balancing the overall energy production and consumption. Viewing the smart grid as a MAS, each agent represents a consumer; this agent takes into account its user's preferences and proposes an optimal energy consumption plan via a gamified GUI. To implement this we propose a distributed architecture through which we give the incentives (either economic, or social); we test a number of pricing mechanisms and we develop a very fast agent optimization strategy. We also present experiments both from software simulations on real data and pilot tests with human participants: the simulations allow to evaluate the mechanisms and agents, whilst the gamified tests are useful to assess the usability of the GUI and the usefulness of the agent suggestions. With human subjects, we evaluated which type of incentives is more compelling: economic or social. Results validate that by using our agent optimization approach the performance of the smart grid can be improved, and that specific mechanisms allow better utilization of renewable sources. C1 [Akasiadis, Charilaos; Vetsikas, Ioannis A.; Mavrouli, Lora; Goutsias, Konstantinos] NCSR Demokritos, Inst Informat & Telecommun, Aghia Paraskevi, Greece. [Panagidi, Kakia; Panagiotou, Nikolaos] Univ Athens, Dept Informat & Telecommun, Athens, Greece. [Sernani, Paolo] Univ Politecn Marche, Dept Informat Engn, Ancona, Italy. [Morton, April] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Akasiadis, C (reprint author), NCSR Demokritos, Inst Informat & Telecommun, Aghia Paraskevi, Greece. EM cakasiadis@iit.demokritos.gr; kakiap@di.uoa.gr; n.panagiotou@di.uoa.gr; p.sernani@univpm.it; mortanam@ornl.gov; ivetsikas@iit.demokritos.gr; lora.mav@gmail.com; kostas2509@yahoo.gr NR 31 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7606-8 PY 2015 BP 328 EP 337 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA BF0FC UT WOS:000378642300044 ER PT S AU Thiagarajan, JJ Ramamurthy, KN AF Thiagarajan, Jayaraman J. Ramamurthy, Karthikeyan Natesan GP IEEE TI SUBSPACE LEARNING USING CONSENSUS ON THE GRASSMANNIAN MANIFOLD SO 2015 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH, AND SIGNAL PROCESSING (ICASSP) SE International Conference on Acoustics Speech and Signal Processing ICASSP LA English DT Proceedings Paper CT 40th IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) CY APR 19-24, 2014 CL Brisbane, AUSTRALIA SP IEEE, Inst Elect & Elect Engineers Signal Proc Soc DE graph embedding; subspace learning; Grassmannian manifold; visualization ID NONLINEAR DIMENSIONALITY REDUCTION; FRAMEWORK; DISTANCE AB High-dimensional structure of data can be explored and task-specific representations can be obtained using manifold learning and low-dimensional embedding approaches. However, the uncertainties in data and the sensitivity of the algorithms to parameter settings, reduce the reliability of such representations, and make visualization and interpretation of data very challenging. A natural approach to combat challenges pertinent to data visualization is to use linearized embedding approaches. In this paper, we explore approaches to improve the reliability of linearized, subspace embedding frameworks by learning a plurality of subspaces and computing a geometric mean on the Grassmannian manifold. Using the proposed algorithm, we build variants of popular unsupervised and supervised graph embedding algorithms, and show that we can infer high-quality embeddings, thereby significantly improving their usability in visualization and classification. C1 [Thiagarajan, Jayaraman J.] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Ramamurthy, Karthikeyan Natesan] IBM Thomas J Watson Res Ctr, Yorktown Hts, NY USA. RP Thiagarajan, JJ (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. NR 19 TC 1 Z9 1 U1 3 U2 5 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1520-6149 BN 978-1-4673-6997-8 J9 INT CONF ACOUST SPEE PY 2015 BP 2031 EP 2035 PG 5 WC Acoustics; Engineering, Electrical & Electronic SC Acoustics; Engineering GA BE1SM UT WOS:000368452402034 ER PT J AU Giorla, AB Le Pape, Y AF Giorla, Alain B. Le Pape, Yann BE Hellmich, C Pichler, B Kollegger, J TI A creep-damage model for mesoscale simulations of concrete expansion-degradation phenomena SO CONCREEP 10: MECHANICS AND PHYSICS OF CREEP, SHRINKAGE, AND DURABILITY OF CONCRETE AND CONCRETE STRUCTURES LA English DT Proceedings Paper CT 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP) CY SEP 21-23, 2015 CL Vienna, AUSTRIA SP RILEM, Amer Soc Civil Engineers, Engn Mech Inst, Amer Soc Civil Engineers, French Natl Res Ctr, Lafarge ID NUCLEAR-POWER-PLANTS AB Long-term performance of aging concrete in nuclear power plants (NPPs) requires a careful examination of the physical phenomena taking place in the material. Concrete under high neutron irradiation is subjected to large irreversible deformations as well as mechanical damage, caused by a swelling of the aggregates. Mesoscale numerical simulations are performed to separate the underlying mechanisms and their interactions. The cement paste creep-damage model accounts for the effect of the loading rate on the apparent damage properties of the material and uses an event-based approach to capture the competition between creep and damage. The model is applied to the simulation of irradiation experiments from the literature and shows a good agreement with the experimental data. C1 [Giorla, Alain B.; Le Pape, Yann] Oak Ridge Natl Lab, One Bethel Valley Rd, Oak Ridge, TN 37831 USA. RP Giorla, AB (reprint author), Oak Ridge Natl Lab, One Bethel Valley Rd, Oak Ridge, TN 37831 USA. EM giorlaab@ornl.gov; lepapeym@ornl.gov NR 9 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CIVIL ENGINEERS PI NEW YORK PA UNITED ENGINEERING CENTER, 345 E 47TH ST, NEW YORK, NY 10017-2398 USA BN 978-0-7844-7934-6 PY 2015 BP 537 EP 540 PG 4 WC Construction & Building Technology; Engineering, Civil; Engineering, Mechanical; Materials Science, Characterization & Testing SC Construction & Building Technology; Engineering; Materials Science GA BE9PS UT WOS:000378045400066 ER PT J AU Charpin, L Le Pape, Y Coustabeau, E Masson, B Montalvo, J AF Charpin, L. Le Pape, Y. Coustabeau, E. Masson, B. Montalvo, J. BE Hellmich, C Pichler, B Kollegger, J TI EDF Study of 10-Years Concrete Creep under Unidirectional and Biaxial Loading: Evolution of Poisson Coefficient under Sealed and Unsealed Conditions SO CONCREEP 10: MECHANICS AND PHYSICS OF CREEP, SHRINKAGE, AND DURABILITY OF CONCRETE AND CONCRETE STRUCTURES LA English DT Proceedings Paper CT 10th International Conference on Mechanics and Physics of Creep, Shrinkage, and Durability of Concrete and Concrete Structures (CONCREEP) CY SEP 21-23, 2015 CL Vienna, AUSTRIA SP RILEM, Amer Soc Civil Engineers, Engn Mech Inst, Amer Soc Civil Engineers, French Natl Res Ctr, Lafarge ID CEMENT PASTE; RATIO AB The post-tensioned inner concrete containment building of nearly half of the French nuclear power plants has the role of barrier against potential radiological release, since these containments buildings have no metallic liner. Hence, the integrity of concrete and the stability of post-tensioning are of paramount importance. Since the variation of post-tensioning is partly due to concrete creep, EDF has been interested in the subject for more than two decades. This article presents the results of experiments performed on a concrete similar to that of a concrete containment building, with an emphasis on the bidimensional nature of creep, on the basis of 1D and 2D tests that were performed at EDF. The evolution of the creep Poisson ratio is discussed as well as its use by different authors. Creep is then analyzed in terms of deviatoric and volumetric components. We show that assuming a constant Poisson ratio is a good assumption. C1 [Charpin, L.] EDF R&D, Dept Mech & Mat Components, Ave Renardieres, F-77818 Ecuelles, Moret Sur Loing, France. [Le Pape, Y.] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA. [Coustabeau, E.; Montalvo, J.] EDF DIN CEIDRE TEGG, F-13090 Aix En Provence, France. [Masson, B.] EDF DIN SEPTEN, Div GS, Grp Enceintes Confinement, F-69628 Villeurbanne, France. RP Charpin, L (reprint author), EDF R&D, Dept Mech & Mat Components, Ave Renardieres, F-77818 Ecuelles, Moret Sur Loing, France. EM laurent.charpin@edf.fr NR 16 TC 0 Z9 0 U1 2 U2 2 PU AMER SOC CIVIL ENGINEERS PI NEW YORK PA UNITED ENGINEERING CENTER, 345 E 47TH ST, NEW YORK, NY 10017-2398 USA BN 978-0-7844-7934-6 PY 2015 BP 1381 EP 1390 PG 10 WC Construction & Building Technology; Engineering, Civil; Engineering, Mechanical; Materials Science, Characterization & Testing SC Construction & Building Technology; Engineering; Materials Science GA BE9PS UT WOS:000378045400164 ER PT J AU Hong-Geller, E Micheva-Viteva, SN AF Hong-Geller, Elizabeth Micheva-Viteva, Sofiya N. BE Vallisuta, O Olimat, S TI Targeting Bacterial Persistence to Develop Therapeutics Against Infectious Disease SO DRUG DISCOVERY AND DEVELOPMENT - FROM MOLECULES TO MEDICINE LA English DT Article; Book Chapter ID RESPIRATORY ATP SYNTHESIS; ESCHERICHIA-COLI; MYCOBACTERIUM-TUBERCULOSIS; PSEUDOMONAS-AERUGINOSA; MULTIDRUG TOLERANCE; SINGLE-CELL; ANTIBIOTIC-RESISTANCE; PYRAZINOIC ACID; TOXIN; MECHANISM C1 [Hong-Geller, Elizabeth; Micheva-Viteva, Sofiya N.] Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. RP Hong-Geller, E (reprint author), Los Alamos Natl Lab, Biosci Div, Los Alamos, NM USA. EM ehong@lanl.gov NR 72 TC 0 Z9 0 U1 0 U2 0 PU INTECH EUROPE PI RIJEKA PA JANEZA TRDINE9, RIJEKA, 51000, CROATIA BN 978-953-51-2128-2 PY 2015 BP 201 EP 218 DI 10.5772/59404 D2 10.5772/58659 PG 18 WC Chemistry, Medicinal; Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA BE9SU UT WOS:000378146500010 ER PT S AU Chen, HB Fu, S AF Chen, Hsing-bung Fu, Song GP IEEE TI PASSI: A Parallel, Reliable and Scalable Storage Software Infrastructure for Active Storage System and I/O Environments SO 2015 IEEE 34TH INTERNATIONAL PERFORMANCE COMPUTING AND COMMUNICATIONS CONFERENCE (IPCCC) SE IEEE International Performance Computing and Communications Conference (IPCCC) LA English DT Proceedings Paper CT 34th IEEE International Perfonnance, Computing, and Communications Conference (lPCCC) CY DEC 14-16, 2015 CL Nanjing, PEOPLES R CHINA SP IEEE, Baidu DE Ethernet drives; parallel erasure coding; disk failure prediction; metadata management; energy efficiency AB Storage systems are a foundational component of computational, experimental, and observational science today. The ever-growing size of computation and simulation results demands huge storage capacity, which challenges the storage scalability and causes data corruption and disk failure to be commonplace in exascale storage environments. Moreover, the increasing complexity of storage hierarchy and passive storage devices make today's storage systems inefficient, which force the adoption of new storage technologies. In this position paper, we propose a Parallel, Reliable and Scalable Storage Software Infrastructure (PASS!) to support the design and prototyping of next-generation active storage environment. The goal is to meet the scaling and resilience need of extreme scale science by ensuring that storage systems are pervasively intelligent, always available, never lose or damage data and energy-efficient. C1 [Chen, Hsing-bung] Los Alamos Natl Lab, High Performance Comp Div, POB 1663, Los Alamos, NM 87545 USA. [Fu, Song] Univ N Texas, Dept Comp Sci & Engn, Denton, TX 76203 USA. RP Chen, HB (reprint author), Los Alamos Natl Lab, High Performance Comp Div, POB 1663, Los Alamos, NM 87545 USA. EM hbchen@lanl.gov; song.fu@unt.edu NR 29 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1097-2641 BN 978-1-4673-8590-9 J9 IEEE IPCCC PY 2015 PG 8 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BE9OW UT WOS:000378000400061 ER PT S AU Yoo, W Koo, M Cao, Y Sim, A Nugent, P Wu, KS AF Yoo, Wucherl Koo, Michelle Cao, Yi Sim, Alex Nugent, Peter Wu, Kesheng GP IEEE TI PATHA: Performance Analysis Tool for HPC Applications SO 2015 IEEE 34TH INTERNATIONAL PERFORMANCE COMPUTING AND COMMUNICATIONS CONFERENCE (IPCCC) SE IEEE International Performance Computing and Communications Conference (IPCCC) LA English DT Proceedings Paper CT 34th IEEE International Perfonnance, Computing, and Communications Conference (lPCCC) CY DEC 14-16, 2015 CL Nanjing, PEOPLES R CHINA SP IEEE, Baidu DE Performance analysis; Performance evaluation; High performance computing ID SYSTEM AB Large science projects rely on complex workflows to analyze terabytes or petabytes of data. These jobs are often running over thousands of CPU cores and simultaneously performing data accesses, data movements, and computation. It is difficult to identify bottlenecks or to debug the performance issues in these large workflows. To address these challenges, we have developed Performance Analysis Tool for HPC Applications (PATHA) using the state-of-art open source big data processing tools. Our framework can ingest system logs to extract key performance measures, and apply the most sophisticated statistical tools and data mining methods on the performance data. It utilizes an efficient data processing engine to allow users to interactively analyze a large amount of different types of logs and measurements. To illustrate the functionality of PATHA, we conduct a case study on the workflows from an astronomy project known as the Palomar Transient Factory (PTF). Our study processed 1.6 TB of system logs collected on the NERSC supercomputer Edison. Using PATHA, we were able to identify performance bottlenecks, which reside in three tasks of PTF workflow with the dependency on the density of celestial objects. C1 [Yoo, Wucherl; Sim, Alex; Nugent, Peter; Wu, Kesheng] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Koo, Michelle; Nugent, Peter] Univ Calif Berkeley, Berkeley, CA 94720 USA. [Cao, Yi] CALTECH, Pasadena, CA 91125 USA. RP Yoo, W (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. NR 26 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1097-2641 BN 978-1-4673-8590-9 J9 IEEE IPCCC PY 2015 PG 8 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA BE9OW UT WOS:000378000400050 ER PT S AU Cook, K Cramer, N Israel, D Wolverton, M Bruce, J Burtner, R Endert, A AF Cook, Kristin Cramer, Nick Israel, David Wolverton, Michael Bruce, Joe Burtner, Russ Endert, Alex BE Chen, M Andrienko, G TI Mixed-Initiative Visual Analytics Using Task-Driven Recommendations SO 2015 IEEE CONFERENCE ON VISUAL ANALYTICS SCIENCE AND TECHNOLOGY SE IEEE Conference on Visual Analytics Science and Technology LA English DT Proceedings Paper CT 10th IEEE Conference on Visual Analytics Science and Technology (VAST) CY OCT 25-30, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, IEEE Visualizat and Graph Tech Comm, InfoVis, SciVis DE mixed-initiative visual analytics; task modeling; recommender systems; sensemaking; Information systems similar to Task models; Information systems similar to Recommender systems; Information systems similar to Relevance assessment; Human-centered computing similar to Human computer interaction (HCI) ID SENSEMAKING; MODEL; WORKSPACE AB Visual data analysis is composed of a collection of cognitive actions and tasks to decompose, internalize, and recombine data to produce knowledge and insight. Visual analytic tools provide interactive visual interfaces to data to support discovery and sensemaking tasks, including forming hypotheses, asking questions, and evaluating and organizing evidence. Myriad analytic models can be incorporated into visual analytic systems at the cost of increasing complexity in the analytic discourse between user and system. Techniques exist to increase the usability of interacting with analytic models, such as inferring data models from user interactions to steer the underlying models of the system via semantic interaction, shielding users from having to do so explicitly. Such approaches are often also referred to as mixed-initiative systems. Sensemaking researchers have called for development of tools that facilitate analytic sensemaking through a combination of human and automated activities. However, design guidelines do not exist for mixed-initiative visual analytic systems to support iterative sensemaking. In this paper, we present candidate design guidelines and introduce the Active Data Environment (ADE) prototype, a spatial workspace supporting the analytic process via task recommendations invoked by inferences about user interactions within the workspace. ADE recommends data and relationships based on a task model, enabling users to co-reason with the system about their data in a single, spatial workspace. This paper provides an illustrative use case, a technical description of ADE, and a discussion of the strengths and limitations of the approach. C1 [Cook, Kristin; Cramer, Nick; Bruce, Joe; Burtner, Russ] Pacific NW Natl Lab, Richland, WA 99352 USA. [Israel, David; Wolverton, Michael] SRI Int, Menlo Pk, CA USA. [Endert, Alex] Georgia Inst Technol, Atlanta, GA 30332 USA. RP Cook, K (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM Kris.Cook@pnnl.gov; nick.cramer@pnnl.gov; david.israel@sri.com; michael.wolverton@sri.com; joseph.bruce@pnnl.gov; russ.burtner@pnnl.gov; endert@gatech.edu NR 35 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-9442 BN 978-1-4673-9783-4 J9 IEEE CONF VIS ANAL PY 2015 BP 9 EP 16 PG 8 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BE9NQ UT WOS:000377892000002 ER PT S AU Bryan, C Wu, X Mniszewski, S Ma, KL AF Bryan, Chris Wu, Xue Mniszewski, Susan Ma, Kwan-Liu BE Chen, M Andrienko, G TI Integrating Predictive Analytics into a Spatiotemporal Epidemic Simulation SO 2015 IEEE CONFERENCE ON VISUAL ANALYTICS SCIENCE AND TECHNOLOGY SE IEEE Conference on Visual Analytics Science and Technology LA English DT Proceedings Paper CT 10th IEEE Conference on Visual Analytics Science and Technology (VAST) / IEEE VIS Conference CY OCT 25-30, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, IEEE Visualizat & Graph Tech Comm, InfoVis, SciVis DE Predictive Modeling; Visual Analytics; Epidemic Visualization; Spatial-Temporal Systems ID PANDEMIC INFLUENZA; MODEL SELECTION; VISUALIZATION; REGRESSION; UNCERTAINTY; TOOL AB The Epidemic Simulation System (EpiSimS) is a scalable, complex modeling tool for analyzing disease within the United States. Due to its high input dimensionality, time requirements, and resource constraints, simulating over the entire parameter space is unfeasible. One solution is to take a granular sampling of the input space and use simpler predictive models (emulators) in between. The quality of the implemented emulator depends on many factors: robustness, sophistication, configuration, and suitability to the input data. Visual analytics can be leveraged to provide guidance and understanding of these things to the user. In this paper, we have implemented a novel interface and workflow for emulator building and use. We introduce a workflow to build emulators, make predictions, and then analyze the results. Our prediction process first predicts temporal time series, and uses these to derive predicted spatial densities. Integrated into the EpiSimS framework, we target users who are non-experts at statistical modeling. This approach allows for a high level of analysis into the state of the built emulators and their resultant predictions. We present our workflow, models, the associated system, and evaluate the overall utility with feedback from EpiSimS scientists. C1 [Bryan, Chris; Wu, Xue; Ma, Kwan-Liu] Univ Calif Davis, VIDi, Davis, CA USA. [Mniszewski, Susan] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. RP Bryan, C (reprint author), Univ Calif Davis, VIDi, Davis, CA USA. EM cjbryan@ucdavis.edu; xewu@ucdavis.edu; smm@lan1.gov; ma@cs.ucdavis.edu NR 36 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-9442 BN 978-1-4673-9783-4 J9 IEEE CONF VIS ANAL PY 2015 BP 17 EP 24 PG 8 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BE9NQ UT WOS:000377892000003 ER PT S AU Whiting, M Cook, K Grinstein, G Fallon, J Liggett, K Staheli, D Crouser, J AF Whiting, Mark Cook, Kristin Grinstein, Georges Fallon, John Liggett, Kristen Staheli, Diane Crouser, Jordan BE Chen, M Andrienko, G TI VAST Challenge 2015: Mayhem at Dinofun World SO 2015 IEEE CONFERENCE ON VISUAL ANALYTICS SCIENCE AND TECHNOLOGY SE IEEE Conference on Visual Analytics Science and Technology LA English DT Proceedings Paper CT 10th IEEE Conference on Visual Analytics Science and Technology (VAST) CY OCT 25-30, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, IEEE Visualizat and Graph Tech Comm, InfoVis, SciVis DE Visual Analytics; Human Information Interaction; Sense Making; Movement Analysis; Evaluation; Contest AB A fictitious amusement park and a larger-than-life hometown football hero provided participants in the VAST Challenge 2015 with an engaging yet complex storyline and setting in which to analyze movement and communication patterns. The datasets for the 2015 challenge were large-averaging nearly 10 million records per day over a three day period-with a simple straightforward structured format. The simplicity of the format belied a complex wealth of features contained in the data that needed to be discovered and understood to solve the tasks and questions that were posed. Two Mini-Challenges and a Grand Challenge compose the 2015 competition. Mini-Challenge 1 contained structured location and date-time data for park visitors, against which participants were to discern groups and their activities. Mini-Challenge 2 contained structured communication data consisting of metadata about time-stamped text messages sent between park visitors. The Grand Challenge required participants to use both movement and communication data to hypothesize when a crime was committed and identify the most likely suspects from all the park visitors. The VAST Challenge 2015 received 71 submissions, and the datasets were downloaded, at least partially, from 26 countries. C1 [Whiting, Mark; Cook, Kristin] Pacific NW Natl Lab, Richland, WA 99352 USA. [Grinstein, Georges; Fallon, John] Univ Massachusetts Lowell, Lowell, MA USA. [Liggett, Kristen] Air Force Res Lab, Wright Patterson AFB, OH USA. [Staheli, Diane] MIT, Lincoln Lab, Cambridge, MA 02139 USA. [Crouser, Jordan] Smith Coll, Northampton, MA 01063 USA. RP Whiting, M (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM mark.whiting@pnnl.gov; kris.cook@pnnl.gov; grinstein@uml.edu; john.fallon@student.uml.edu; kristen.liggett@us.af.mil; diane.staheli@ll.mit.edu; jcrouser@smith.edu NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-9442 BN 978-1-4673-9783-4 J9 IEEE CONF VIS ANAL PY 2015 BP 113 EP 118 PG 6 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BE9NQ UT WOS:000377892000015 ER PT S AU Cook, KA Scholtz, J Whiting, MA AF Cook, Kristin A. Scholtz, Jean Whiting, Mark A. BE Chen, M Andrienko, G TI A Software Developer's Guide to Informal Evaluation of Visual Analytics Environments Using VAST Challenge Information SO 2015 IEEE CONFERENCE ON VISUAL ANALYTICS SCIENCE AND TECHNOLOGY SE IEEE Conference on Visual Analytics Science and Technology LA English DT Proceedings Paper CT 10th IEEE Conference on Visual Analytics Science and Technology (VAST) CY OCT 25-30, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, IEEE Visualizat and Graph Tech Comm, InfoVis, SciVis DE Visual analytics environments; evaluation; Visual Analytics Benchmark Repository; Human-centered computing: visualization: design and evaluation methods AB The VAST Challenge has been a popular venue for academic and industry participants for over ten years. Many participants comment that the majority of their time in preparing VAST Challenge entries is discovering elements in their software environments that need to be redesigned in order to solve the given task. Fortunately, there is no need to wait until the VAST Challenge is announced to test out software systems. The Visual Analytics Benchmark Repository contains all past VAST Challenge tasks, data, solutions and submissions. In this poster we describe how developers can perform informal evaluations of various aspects of their visual analytics environments using VAST Challenge information. C1 [Cook, Kristin A.; Scholtz, Jean; Whiting, Mark A.] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Cook, KA (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM kris.cook@pnnl.gov; jean.scholtz@pnnl.gov; mark.whiting@pnnl.gov NR 1 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-9442 BN 978-1-4673-9783-4 J9 IEEE CONF VIS ANAL PY 2015 BP 193 EP 194 PG 2 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BE9NQ UT WOS:000377892000051 ER PT S AU Reda, K Gonzalez, A Leigh, J Papka, ME AF Reda, Khairi Gonzalez, Alberto Leigh, Jason Papka, Michael E. BE Chen, M Andrienko, G TI Tell Me What Do You See: Detecting Perceptually-Separable Visual Patterns via Clustering of Image-Space Features in Visualizations SO 2015 IEEE CONFERENCE ON VISUAL ANALYTICS SCIENCE AND TECHNOLOGY SE IEEE Conference on Visual Analytics Science and Technology LA English DT Proceedings Paper CT 10th IEEE Conference on Visual Analytics Science and Technology (VAST) CY OCT 25-30, 2015 CL Chicago, IL SP IEEE, IEEE Comp Soc, IEEE Visualizat and Graph Tech Comm, InfoVis, SciVis AB Visualization helps users infer structures and relationships in the data by encoding information as visual features that can be processed by the human visual-perceptual system. However, users would typically need to expend significant effort to scan and analyze a large number of views before they can begin to recognize relationships in a visualization. We propose a technique to partially automate the process of analyzing visualizations. By deriving and analyzing image-space features from visualizations, we can detect perceptually-separable patterns in the information space. We summarize these patterns with a tree-based meta-visualization and present it to the user to aid exploration. We illustrate this technique with an example scenario involving the analysis of census data. C1 [Reda, Khairi; Papka, Michael E.] Argonne Natl Lab, Argonne, IL 60439 USA. [Reda, Khairi; Gonzalez, Alberto; Leigh, Jason] Univ Hawaii Manoa, Honolulu, HI 96822 USA. [Papka, Michael E.] No Illinois Univ, De Kalb, IL 60115 USA. RP Reda, K (reprint author), Argonne Natl Lab, Argonne, IL 60439 USA. EM kreda@anl.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-9442 BN 978-1-4673-9783-4 J9 IEEE CONF VIS ANAL PY 2015 BP 211 EP 212 PG 2 WC Engineering, Electrical & Electronic; Imaging Science & Photographic Technology SC Engineering; Imaging Science & Photographic Technology GA BE9NQ UT WOS:000377892000060 ER PT S AU Lee, DS Allen, GR Swift, G Cannon, M Wirthlin, M George, JS Koga, R Huey, K AF Lee, David S. Allen, Gregory R. Swift, Gary Cannon, Matthew Wirthlin, Michael George, Jeffrey S. Koga, Rokutaro Huey, Kangsen GP IEEE TI Single-Event Characterization of the 20 nm Xilinx Kintex UltraScale Field-Programmable Gate Array under Heavy Ion Irradiation SO 2015 IEEE RADIATION EFFECTS DATA WORKSHOP (REDW) SE IEEE Radiation Effects Data Workshop LA English DT Proceedings Paper CT IEEE Radiation Effects Data Workshop (REDW) CY JUL 13-17, 2015 CL Boston, MA SP IEEE, IEEE Nucl & Plasma Sci Soc AB This study examines the single-event response of the Xilinx 20 nm Kintex UltraScale Field-Programmable Gate Array irradiated with heavy ions. Results for single-event latchup and single- event upset on configuration SRAM cells and Block RAM memories are provided. C1 [Lee, David S.] Sandia Natl Labs, Albuquerque, NM 87123 USA. [Allen, Gregory R.] NASA, Jet Prop Lab, Pasadena, CA 91109 USA. [Swift, Gary] Swift Engn & Radiat Serv LLC, San Jose, CA 95124 USA. [Cannon, Matthew; Wirthlin, Michael] Brigham Young Univ, Dept Elect & Comp Engn, Ctr High Performance Reconfigurable Comp, Provo, UT 84602 USA. [George, Jeffrey S.; Koga, Rokutaro] Aerosp Corp, El Segundo, CA 90245 USA. [Huey, Kangsen] Xilinx Inc, San Jose, CA 95124 USA. RP Lee, DS (reprint author), Sandia Natl Labs, Albuquerque, NM 87123 USA. EM dslee@sandia.gov; gregory.r.allen@jpl.nasa.gov; gary.m.swift@ieee.org; matthew.cannon@byu.edu; wirthlin@byu.edu; jeffrey.s.george@aero.org; rokutaro.koga@aero.org; kangsen.huey@xilinx.com NR 12 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2154-0519 BN 978-1-4673-7641-9 J9 IEEE RADIAT EFFECTS PY 2015 BP 222 EP 227 PG 6 WC Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Physics, Fluids & Plasmas; Physics, Nuclear SC Computer Science; Engineering; Physics GA BE9LZ UT WOS:000377773700037 ER PT S AU Pagerit, S Sharer, P Rousseau, A Sun, QW Kropinski, M Clark, N Torossian, J Hellestrand, G AF Pagerit, Sylvain Sharer, Phil Rousseau, Aymeric Sun, Qinwei Kropinski, Mike Clark, Neville Torossian, James Hellestrand, Graham GP IEEE TI Rapid Partitioning, Automatic Assembly and Multi-core Simulation of Distributed Vehicle Systems SO 2015 IEEE VEHICLE POWER AND PROPULSION CONFERENCE (VPPC) SE IEEE Vehicle Power and Propulsion Conference LA English DT Proceedings Paper CT 12th IEEE Vehicle Power and Propulsion Conference (VPPC) CY OCT 19-22, 2015 CL Montreal, CANADA SP IEEE, TM4, OPAL RT Technol DE Distributed simulation; partitioning and automatic model re-assembly; accurate network communication; vehicle systems; multi-core simulation; model based design and engineering AB The advent of heterogeneous specifications of complex systems utilizing both continuous (viz. physics or maths based models) and discrete domain models, communicating via accurate network models, enables a generalization of the usual model-based design methodology. The use of individual notations appropriate for sensor, actuator, plant, controller and accurate network modeling, enable both the natural specification of various models and the continued usage of legacy libraries containing models described in these various notations. The ability to choose fixed or variable-step solvers individually for the simulation of each continuous domain model in a system, enables designers to choose levels of accuracy of models, appropriate network communication models, and speeds of simulation. In this paper, we describe how engineers can rapidly define the connection of hierarchies of modules contained in Simulink models, and their topography distributed across multi-core computers, for fast and accurate simulation. C1 [Pagerit, Sylvain; Sharer, Phil; Rousseau, Aymeric] Argonne Natl Lab, Ctr Transportat Res, Lemont, IL 60439 USA. [Sun, Qinwei; Kropinski, Mike] Gen Motors LLC, GM Powertrain, Milford, MA USA. [Clark, Neville; Torossian, James] EST Embedded Syst Technol PL, Sydney, NSW, Australia. [Hellestrand, Graham] Embedded Syst Technol Inc, San Carlos, CA USA. RP Pagerit, S (reprint author), Argonne Natl Lab, Ctr Transportat Res, Lemont, IL 60439 USA. EM spagerit@anl.gov; psharer@anl.gov; arousseau@anl.gov; Qinwei.sun@gm.com; michael.kropinski@gm.com; n.clark@essetek.com; j.torossian@essetek.com; g.hellestrand@essetek.com NR 9 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1938-8756 BN 978-1-4673-7637-2 J9 IEEE VEHICLE POWER PY 2015 PG 7 WC Engineering, Electrical & Electronic; Transportation Science & Technology SC Engineering; Transportation GA BE9NW UT WOS:000377904400129 ER PT S AU Wang, LJ Gonder, J Burton, E Brooker, A Meintz, A Konan, A AF Wang, Lijuan Gonder, Jeff Burton, Evan Brooker, Aaron Meintz, Andrew Konan, Arnaud GP IEEE TI A Cost Effectiveness Analysis of Quasi-Static Wireless Power Transfer for Plug-In Hybrid Electric Transit Buses SO 2015 IEEE VEHICLE POWER AND PROPULSION CONFERENCE (VPPC) SE IEEE Vehicle Power and Propulsion Conference LA English DT Proceedings Paper CT 12th IEEE Vehicle Power and Propulsion Conference (VPPC) CY OCT 19-22, 2015 CL Montreal, CANADA SP IEEE, TM4, OPAL RT Technol DE Quasi-static wireless power transfer; Conventional bus; Hybrid electric vehicle (HEV); Plug-in hybrid electric vehicle (PHEV); Hybrid electric bus (HEB); Plug-in hybrid electric bus (PHEB); Cost effectiveness analysis; Net present cost (NPC) AB This study evaluates the costs and benefits associated with the use of a stationary-wireless-power-transferenabled plug-in hybrid electric bus and determines the cost effectiveness relative to a conventional bus and a hybrid electric bus. A sensitivity sweep was performed over many different battery sizes, charging power levels, and number/location of bus stop charging stations. The net present cost was calculated for each vehicle design and provided the basis for design evaluation. In all cases, given the assumed economic conditions, the conventional bus achieved the lowest net present cost while the optimal plug-in hybrid electric bus scenario beat out the hybrid electric comparison scenario. The study also performed parameter sensitivity analysis under favorable and high unfavorable market penetration assumptions. The analysis identifies fuel saving opportunities with plug-in hybrid electric bus scenarios at cumulative net present costs not too dissimilar from those for conventional buses. C1 [Wang, Lijuan; Gonder, Jeff; Burton, Evan; Brooker, Aaron; Meintz, Andrew; Konan, Arnaud] Natl Renewable Energy Lab, Syst Anal & Integrat Sect, Golden, CO USA. RP Wang, LJ (reprint author), Natl Renewable Energy Lab, Syst Anal & Integrat Sect, Golden, CO USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1938-8756 BN 978-1-4673-7637-2 J9 IEEE VEHICLE POWER PY 2015 PG 6 WC Engineering, Electrical & Electronic; Transportation Science & Technology SC Engineering; Transportation GA BE9NW UT WOS:000377904400001 ER PT J AU Jin, SS Chen, YS Wu, D Diao, RS Huang, ZY AF Jin, Shuangshuang Chen, Yousu Wu, Di Diao, Ruisheng Huang, Zhenyu (Henry) TI Implementation of Parallel Dynamic Simulation on Shared-Memory vs. Distributed-Memory Environments SO IFAC PAPERSONLINE LA English DT Proceedings Paper CT 9th IFAC Symposium on Control of Power and Energy Systems (CPES 2015) CY DEC 09-11, 2015 CL New Delhi, INDIA DE dynamic simulation; high performance computing; Open Multi-processing; Message Passing Interface ID TRANSIENT STABILITY SIMULATION AB Power system dynamic simulation computes the system response to a sequence of large disturbance, such as sudden changes in generation or load, or a network short circuit followed by protective branch switching operation. It consists of a large set of differential and algebraic equations. which is computational intensive and challenging to solve using single-processor based dynamic simulation solution. High-performance computing (HPC) based parallel computing is a very promising technology to speed up the computation and facilitate the simulation process. This paper presents two different parallel implementations of power grid dynamic simulation using Open Multi-processing (OpenMP) on shared-memory platform, and Message Passing Interface (MPI) on distributed-memory clusters. The difference of the parallel simulation algorithms and architectures of the two HPC technologies arc illustrated, and their performances for running parallel dynamic simulation are compared and demonstrated. C1 [Jin, Shuangshuang; Chen, Yousu] Pacific NW Natl Lab, Battelle Seattle Res Ctr, Seattle, WA 98109 USA. [Wu, Di; Diao, Ruisheng; Huang, Zhenyu (Henry)] Pacific NW Natl Lab, Richland, WA 99354 USA. RP Jin, SS (reprint author), Pacific NW Natl Lab, Battelle Seattle Res Ctr, Seattle, WA 98109 USA. EM shuangshuang.jin@pnnl.gov; Yousu.chen@pnnl.gov; di.wu@pnnl.gov; ruisheng.diao@pnnl.gov; zhenyu.huang@pnnl.gov OI Wu, Di/0000-0001-6955-4333 NR 13 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2405-8963 J9 IFAC PAPERSONLINE JI IFAC PAPERSONLINE PY 2015 VL 48 IS 30 BP 221 EP 226 DI 10.1016/j.ifacol.2015.12.381 PG 6 GA DL7YC UT WOS:000375855300038 ER PT J AU Chen, YS Glaesemann, K Rice, M Huang, ZY AF Chen, Yousu Glaesemann, Kurt Rice, Mark Huang, Zhenyu TI Integrated State Estimation and Contingency Analysis Software Implementation using High Performance Computing Techniques SO IFAC PAPERSONLINE LA English DT Proceedings Paper CT 9th IFAC Symposium on Control of Power and Energy Systems (CPES 2015) CY DEC 09-11, 2015 CL New Delhi, INDIA DE Energy Management Systems (EMS); Situational Awareness; High Performance Computing; State Estimation. Contingency Analysis ID PARALLEL CIRCUIT SIMULATION AB Power system simulation tools are traditionally developed in sequential mode and codes are optimized for single core computing only. However, the increasing complexity in the power grid models requires more intensive computation. The traditional simulation tools will soon not be able to meet the grid operation requirements. Therefore, power system simulation tools need to evolve accordingly to provide faster and better results for grid operations. This paper presents an integrated state estimation and contingency analysis software implementation using high performance computing techniques. The software is able to solve large size state estimation problems within 1 second and achieve a near-linear speedup of 9,800 with 10,000 cores for contingency analysis application. The performance evaluation is presented to show its effectiveness. C1 [Chen, Yousu] Pacific NW Natl Lab, Seattle, WA 98109 USA. [Glaesemann, Kurt; Rice, Mark; Huang, Zhenyu] Pacific NW Natl Lab, Richland, WA 99354 USA. RP Chen, YS (reprint author), Pacific NW Natl Lab, Seattle, WA 98109 USA. EM yousu.chen@pnnl.gov; kurt.glaesemann@pnnl.gov; mark.rice@pnnl.gov; zhenyu.huang@pnnl.gov OI Glaesemann, Kurt/0000-0002-9512-1395 NR 30 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2405-8963 J9 IFAC PAPERSONLINE JI IFAC PAPERSONLINE PY 2015 VL 48 IS 30 BP 227 EP 232 DI 10.1016/j.ifacol.2015.12.382 PG 6 GA DL7YC UT WOS:000375855300039 ER PT J AU Sahyoun, S Djouadi, SM Shankar, M AF Sahyoun, S. Djouadi, S. M. Shankar, M. TI Optimal Control of Droop Controlled Inverters in Islanded Microgrids SO IFAC PAPERSONLINE LA English DT Proceedings Paper CT 9th IFAC Symposium on Control of Power and Energy Systems (CPES 2015) CY DEC 09-11, 2015 CL New Delhi, INDIA DE Optimal control; islanded microgrids; Kuramoto model; renewable energy ID SYNCHRONIZATION; SYSTEMS; POWER AB For an islanded microgrid modeled by a Kuramoto oscillators nonlinear model, we design the distributed optimal controller using the maximum principle optimization theory. Vie first quantify synchrony in terms of phases and droop coefficients at the inverters in the microgried and then we maximize it. WC prove that the solution of the distributed optimal control problem exists and we find it. We evaluate performance in a simulation case. (C) 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. C1 [Sahyoun, S.; Djouadi, S. M.] Univ Tennessee, Knoxville, TN 37996 USA. [Shankar, M.] Oak Ridge Natl Lab, Oak Ridge, TN 37830 USA. RP Sahyoun, S (reprint author), Univ Tennessee, Knoxville, TN 37996 USA. EM ssahyoun@vols.utk.edu; djounadi@eecs.utk.edu; shankarm@ornl.gov NR 21 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2405-8963 J9 IFAC PAPERSONLINE JI IFAC PAPERSONLINE PY 2015 VL 48 IS 30 BP 363 EP 368 DI 10.1016/j.ifacol.2015.12.405 PG 6 GA DL7YC UT WOS:000375855300062 ER PT J AU Chen, Y Etingov, P Fitzhcnry, E Sharma, P Nguyen, T Makarov, Y Rice, M Allwardt, C Widergren, S AF Chen Yousu Etingov, Pavel Fitzhcnry, Erin Sharma, Poorva Nguyen, Tony Makarov, Yuri Rice, Mark Allwardt, Craig Widergren, Steve TI A Framework to Support the Fusion of Operation and Planning SO IFAC PAPERSONLINE LA English DT Proceedings Paper CT 9th IFAC Symposium on Control of Power and Energy Systems (CPES 2015) CY DEC 09-11, 2015 CL New Delhi, INDIA DE Middleware; Power system management. Power system planning. Ramping capacity; Uncertainty analysis AB The management of the nation's power system has progressed to the point where the boundary lines between operations and planning are becoming blurred. The dynamic behavior of smart grid technologies brings pressures of incorporating the predictive capability from planning to enhance operations. These needs are requiring a smoother, better integrated interplay between the functional roles of planning and operations. This paper presents a framework to support the fusion of operation and planning. A case studs of predicting the intra-hour deficiency in generation capability and ramping capacity and presenting the outputs to operators Was conducted. The study shows the benefits of the fusion and the effectiveness of the framework. All the function blocks used in the study were built upon GridOPTICS Software System (GOSS), a software system middleware platform that facilitates deployment of new applications for the future power grid. The framework has been used in an operator training class and its usability and effectiveness have been validated. (C) 2015, IFAC (Imernational Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. C1 [Chen Yousu; Etingov, Pavel; Fitzhcnry, Erin] Pacific NW Natl Lab, Seattle, WA 98109 USA. [Sharma, Poorva; Nguyen, Tony; Makarov, Yuri; Rice, Mark; Allwardt, Craig; Widergren, Steve] Pacific NW Natl Lab, Richland, WA 99354 USA. RP Chen, Y (reprint author), Pacific NW Natl Lab, Seattle, WA 98109 USA. EM yousu.chen@pnnl.gov; pavel.etingov@pnnl.gov; erin.fitzhcnry@pnnl.gov; Poorva.sharma@pnnl.gov; tony.nguyen@pnnl.gov; yuri.makarov@pnnl.gov; amrk.rice@pnnl.gov; craig.allwardt@pnnl.gov; steve.widergren@pnnl.gov NR 7 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2405-8963 J9 IFAC PAPERSONLINE JI IFAC PAPERSONLINE PY 2015 VL 48 IS 30 BP 427 EP 432 DI 10.1016/j.ifacol.2015.12.416 PG 6 GA DL7YC UT WOS:000375855300073 ER PT J AU Zavala, VM AF Zavala, Victor M. TI A Multiobjective Optimization Perspective on the Stability of Economic MPC SO IFAC PAPERSONLINE LA English DT Proceedings Paper CT 9th IFAC Symposium on Advanced Control of Chemical Processes ADCHEM 2015 CY JUN 07-10, 2015 CL Whistler, CA DE economic; stability; MPC; multiobjective; price ID MODEL-PREDICTIVE CONTROL; OPTIMALITY; ROBUST AB We interpret economic MPC as a scheme that trades off economic performance and stability. We use this notion to design an economic MPC controller that exploits the inherent robustness of a stable auxiliary MPC controller to enhance economic performance. Specifically, we incorporate a flexible stabilizing constraint to the economic MPC formulation that preserves stability of the auxiliary controller. We use multiobjective optimization concepts to argue that the dual variable of the stabilizing constraint can be interpreted as a price of stability and we establish an equivalence between the proposed controller and regularized economic MPC controllers. We demonstrate that nontrivial gains in economic performance can be achieved without compromising stability. (C) 2015, IFAC (International Federation of Automatic Control) Hosting by Elsevier Ltd. All rights reserved. C1 [Zavala, Victor M.] Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. RP Zavala, VM (reprint author), Argonne Natl Lab, Div Math & Comp Sci, 9700 S Cass Ave, Argonne, IL 60439 USA. EM vzavala@mcs.anl.gov NR 20 TC 1 Z9 1 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2405-8963 J9 IFAC PAPERSONLINE JI IFAC PAPERSONLINE PY 2015 VL 48 IS 8 BP 974 EP 980 DI 10.1016/j.ifacol.2015.09.096 PG 7 GA DL7TF UT WOS:000375842300164 ER PT J AU Suthar, B Sonawane, D Braatz, RD Subramanian, VR AF Suthar, Bharatkumar Sonawane, Dayaram Braatz, Richard D. Subramanian, Venkat R. TI Optimal Low Temperature Charging of Lithium-ion Batteries SO IFAC PAPERSONLINE LA English DT Proceedings Paper CT 9th IFAC Symposium on Advanced Control of Chemical Processes ADCHEM 2015 CY JUN 07-10, 2015 CL Whistler, CA DE Li-ion battery; dynamic optimization; plating reaction; optimal charging; capacity fade ID DYNAMIC OPTIMIZATION; INSERTION CELL; SYSTEMS; REFORMULATION; CHALLENGES; OVERCHARGE; STRATEGIES; DEPOSITION; SIMULATION; MODELS AB A lithium-plating side reaction at the lithiated graphite (LiC6) anode leads to poor safety of the lithium-ion battery. Faster charging at normal temperature may lead to a plating side reaction during the end of charging at the anode-separator interface. At lower temperature, the lithium-plating side reaction may become thermodynamically favorable during almost the entire charging period. even at low rates. This paper uses an electrochemical engineering model and dynamic optimization framework to derive charging profiles to minimize lithium plating at low temperatures. Transport parameters for lithium-ion battery are very sensitive at low temperatures. This paper shows the derivation of the optimal charging profile considering strict lower bounds on the plating reaction depending on various thermal insulation conditions (adiabatic, isothermal, and normal heat transfer coefficient) surrounding the battery. (c) 2015, IFAC (International Federation or Automatic Control) Hosting by Elsevier Ltd. All rights reserved. C1 [Suthar, Bharatkumar; Subramanian, Venkat R.] Washington Univ, Dept Energy Environm & Chem Engn, St Louis, MO 63130 USA. [Sonawane, Dayaram; Subramanian, Venkat R.] Univ Washington, Dept Chem Engn, Seattle, WA 98195 USA. [Braatz, Richard D.] MIT, Dept Chem Engn, Cambridge, MA 02139 USA. [Subramanian, Venkat R.] Pacific NW Natl Lab, Energy Proc & Mat Div, Richland, WA 99352 USA. RP Suthar, B (reprint author), Washington Univ, Dept Energy Environm & Chem Engn, St Louis, MO 63130 USA. EM vsubram@uw.edu NR 22 TC 1 Z9 1 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2405-8963 J9 IFAC PAPERSONLINE JI IFAC PAPERSONLINE PY 2015 VL 48 IS 8 BP 1216 EP 1221 DI 10.1016/j.ifacol.2015.09.134 PG 6 GA DL7TF UT WOS:000375842300202 ER PT J AU Zamar, DS Gopaluni, B Sokhansanj, S Newlands, NK AF Zamar, David S. Gopaluni, Bhushan Sokhansanj, Shahab Newlands, Nathaniel K. TI Robust Optimization of Competing Biomass Supply Chains Under Feedstock Uncertainty SO IFAC PAPERSONLINE LA English DT Proceedings Paper CT 9th IFAC Symposium on Advanced Control of Chemical Processes ADCHEM 2015 CY JUN 07-10, 2015 CL Whistler, CA DE renewable energy systems; robust estimation; convex optimization; uncertainty; stochastic approximation ID BIOENERGY; OIL AB Supply chain optimization for biomass-based power plants is an important research area due to greater emphasis on renewable power energy sources. This paper develops a robust quartile-based approach for stochastic optimization under uncertainty, which builds upon scenario analysis. We apply our approach to address the problem of analyzing competing biomass supply chains subject to stochastic demand and supply. (c) 2015, IFAC (International Federation or Automatic Control) Hosting by Elsevier Ltd. All rights reserved. C1 [Zamar, David S.; Gopaluni, Bhushan; Sokhansanj, Shahab] Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z3, Canada. [Sokhansanj, Shahab] Oak Ridge Natl Lab, Div Environm Sci, Resource & Engn Syst Grp, Oak Ridge, TN 37831 USA. [Newlands, Nathaniel K.] Agr & Agri Food Canada, Lethbridge Res Ctr, Sci & Technol Branch, Lethbridge, AB, Canada. RP Zamar, DS (reprint author), Univ British Columbia, Dept Chem & Biol Engn, Vancouver, BC V6T 1Z3, Canada. EM zamar.david@gmail.com; bhushan.gopaluni@ubc.ca; shahabs@chbe.ubc.ca; nathaniel.newlands@agr.gc.ca NR 21 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 2405-8963 J9 IFAC PAPERSONLINE JI IFAC PAPERSONLINE PY 2015 VL 48 IS 8 BP 1222 EP 1227 DI 10.1016/j.ifacol.2015.09.135 PG 6 GA DL7TF UT WOS:000375842300203 ER PT B AU Alvin, MA Anderson, I Heidloff, A White, E Bhatt, R Grady, J McMordie, B AF Alvin, M. A. Anderson, I. Heidloff, A. White, E. Bhatt, R. Grady, J. McMordie, B. GP ASME TI Development of Advanced Material Systems for Future Gas Turbine Applications SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 6 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID SIC MATRIX COMPOSITES AB Advanced coating systems in conjunction with novel internal airfoil cooling configurations continue to be a critical research focus to provide enhanced oxidation protection and cooling of commercial metal alloys as future land-based gas turbines are being designed for inlet gas temperature operations of > 1300-1400 degrees C. With the application of densified oxide dispersion strengthened (ODS) coatings on cast near surface embedded micro-channel (NSEMC) airfoil surfaces, improvements of >50-70% in heat removal capabilities are projected over that of conventional, smooth channeled, internally -cooled, airfoil configurations. For turbine inlet and airfoil surface design temperatures exceeding 1400-1600 degrees C, oxide-coated, silicon carbide-based ceramic matric composites (CMCs) have been developed. In this paper we will review our recent advancements that have been made with respect to ODS coating development and the oxidation stability of CMCs during bench-scale laboratory testing. C1 [Alvin, M. A.] US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. [Anderson, I.; Heidloff, A.; White, E.] Iowa State Univ, Ames Lab, Ames, IA 50011 USA. [Bhatt, R.; Grady, J.] NASA Glenn Res Ctr, Cleveland, OH 44135 USA. [McMordie, B.] Coatings Ind, Souderton, PA 18964 USA. RP Alvin, MA (reprint author), US DOE, Natl Energy Technol Lab, Pittsburgh, PA 15236 USA. EM maryanne.alvin@netl.doe.gov; andersoi@ameslab.gov; aheidloff@gmail.com; ewhite@iastate.edu; ramakrishna.t.bhatt@nasa.gov; joseph.e.grady@nasa.gov; bmcmordie@cficoatings.com NR 21 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5675-8 PY 2015 AR V006T21A010 PG 8 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BE9JB UT WOS:000377639400049 ER PT B AU Pezzini, P Bryden, KM Tucker, D Banta, L AF Pezzini, Paolo Bryden, Kenneth M. Tucker, David Banta, Larry GP ASME TI Multi-Coordination of Actuators in Advanced Power Systems SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 6 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst AB Multi-coordination of actuators for a highly integrated, tightly coupled advanced power system was evaluated using the Hybrid Performance (Hyper) project facility at the U.S. Department of Energy's National Energy Technology Laboratory (NETL). A two-by-two scenario in a fuel cell, turbine hybrid power system was utilized as a representative problem in terms of system component coupling during transients and setpoint changes. In this system, the gas turbine electric load is used to control the turbine speed, and the cold air bypass valve regulated fuel cell cathode mass flow. Perturbations in the turbine speed caused by variations in the waste heat from the fuel cell affect the cathode airflow, and the cold-air bypass control action required for constant cathode airflow strongly affects the turbine speed. Previous implementation of two single-input, single-output (SISO) controllers failed to provide acceptable disturbance rejection and setpoint tracking under these highly coupled conditions. A multiple-input, multiple-output (MIMO) controller based on the classic internal model control (IMC) concept was implemented and experimentally tested for the first time using the Hyper project facility. The state-space design of the MIMO configuration, the control law integration into the digital control platform, and the experimental comparison with the SISO case are presented. C1 [Pezzini, Paolo; Bryden, Kenneth M.] US DOE, Ames Lab, Simulat & Decis Sci Program, Ames, IA 50011 USA. [Bryden, Kenneth M.] Iowa State Univ, Dept Mech Engn, Ames, IA USA. [Tucker, David] US DOE, Natl Energy Technol Lab, Morgantown, WV USA. [Banta, Larry] W Virginia Univ, Dept Mech & Aerosp Engn, Morgantown, WV 26506 USA. RP Pezzini, P (reprint author), US DOE, Ames Lab, Simulat & Decis Sci Program, Ames, IA 50011 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5675-8 PY 2015 AR V006T05A017 PG 12 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BE9JB UT WOS:000377639400022 ER PT B AU Pint, BA Unocic, KA Haynes, JA AF Pint, Bruce A. Unocic, Kinga A. Haynes, J. Allen GP ASME TI The Effect of Environment on TBC Lifetime SO PROCEEDINGS OF THE ASME TURBO EXPO: TURBINE TECHNICAL CONFERENCE AND EXPOSITION, 2015, VOL 6 LA English DT Proceedings Paper CT ASME Turbo Expo: Turbine Technical Conference and Exposition CY JUN 15-19, 2015 CL Montreal, CANADA SP Int Gas Turbine Inst ID HIGH-TEMPERATURE OXIDATION; BARRIER COATING SYSTEMS; GAMMA' NIPTAL COATINGS; GROWN ALUMINA SCALES; WATER-VAPOR; BOND COATINGS; SUBSTRATE COMPOSITION; ALLOYS; BEHAVIOR; SUPERALLOYS AB While the water vapor content of the combustion gas in natural gas-fired land based turbines is similar to 10%, it can be 20-85% with coal-derived (syngas or H-2) fuels or innovative turbine concepts for more efficient carbon capture. Additional concepts envisage working fluids with high CO2 contents to facilitate carbon capture and sequestration. To investigate the effects of changes in the gas composition on thermal barrier coating (TBC) lifetime,furnace cycling tests (1 and 100h cycles) were performed in air with 10, 50 and 90 vol.% water vapor and CO2-10%H2O and compared to prior results in dry air or O-2. Two types of TBC's were investigated: (1) diffusion bond coatings (Pt diffusion or Pt-modified aluminide) with commercial electron-beam physical vapor-deposited yttria-stabilized zirconia (YSZ) top coatings on second-generation superalloy N5 and N515 substrates and (2) high velocity oxygen fuel (HVOF) sprayed MCrAlYHfSi bond coatings with air-plasma sprayed YSZ top coatings on superalloys X4, 1483 or 247 substrates. For both types of coatings exposed in 1h cycles, the addition of water vapor resulted in a decrease in coating lifetime, except for Pt diffusion coatings which were unaffected by the environment. In 100h cycles, environment was less critical, perhaps because coating failure was chemical (i.e. due to interdiffusion) rather than mechanical. In both 1h and 100h cycles, CO2 did not appear to have any negative effect on coating lifetime. C1 [Pint, Bruce A.; Unocic, Kinga A.; Haynes, J. Allen] Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. RP Pint, BA (reprint author), Oak Ridge Natl Lab, Mat Sci & Technol Div, Oak Ridge, TN 37831 USA. EM pintba@ornl.gov NR 56 TC 0 Z9 0 U1 1 U2 1 PU AMER SOC MECHANICAL ENGINEERS PI NEW YORK PA THREE PARK AVENUE, NEW YORK, NY 10016-5990 USA BN 978-0-7918-5675-8 PY 2015 AR V006T21A013 PG 10 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BE9JB UT WOS:000377639400052 ER PT S AU Abramzon, N Benson, P Bertschinger, E Blessing, S Cochran, GL Cox, A Cunningham, B Galbraith-Frew, J Johnson, J Kerby, L Lalanne, E O'Donnell, C Petty, S Sampath, S Seestrom, S Singh, C Spencer, C Woodle, KS Yennello, S AF Abramzon, Nina Benson, Patrice Bertschinger, Edmund Blessing, Susan Cochran, Geraldine L. Cox, Anne Cunningham, Beth Galbraith-Frew, Jessica Johnson, Jolene Kerby, Leslie Lalanne, Elaine O'Donnell, Christine Petty, Sara Sampath, Sujatha Seestrom, Susan Singh, Chandralekha Spencer, Cherrill Woodle, Kathryne Sparks Yennello, Sherry BE Cunningham, BA ORiordan, C Ghose, S TI Women in Physics in the United States: Recruitment and Retention SO WOMEN IN PHYSICS: 5TH IUPAP INTERNATIONAL CONFERENCE ON WOMEN IN PHYSICS SE AIP Conference Proceedings LA English DT Proceedings Paper CT 5th IUPAP International Conference on Women in Physics CY AUG 05-08, 2014 CL Wilfrid Laurier Univ, Waterloo, CANADA SP IUPAP Working Grp Women Phys, Canadian Assoc Physicists, Laurier Ctr Women Sci HO Wilfrid Laurier Univ AB Initiatives to increase the number, persistence, and success of women in physics in the United States reach preteen girls through senior women. Programs exist at both the local and national levels. In addition, researchers have investigated issues related to gender equity in physics and physics education. Anecdotal evidence suggests increased media coverage of the underrepresentation of women in science. All of these efforts are motivated and made more effective by the continued collection and presentation of data on the presence, persistence, and promise of women in physics. C1 [Abramzon, Nina] Calif State Polytech Univ Pomona, Pomona, CA 91768 USA. [Benson, Patrice] US Mil Acad, West Point, NY USA. [Bertschinger, Edmund] MIT, Cambridge, MA 02139 USA. [Blessing, Susan] Florida State Univ, Tallahassee, FL 32306 USA. [Cochran, Geraldine L.] Rochester Inst Technol, Rochester, NY 14623 USA. [Cox, Anne] Eckerd Coll, St Petersburg, FL USA. [Cunningham, Beth] Amer Assoc Phys Teachers, New York, NY USA. [Galbraith-Frew, Jessica] Univ Utah, Salt Lake City, UT 84112 USA. [Johnson, Jolene] St Catherine Univ, St Paul, MN USA. [Kerby, Leslie] Univ Idaho, Moscow, ID 83843 USA. [Lalanne, Elaine] US Navy, New York, NY USA. [O'Donnell, Christine] Univ Virginia, Charlottesville, VA 22903 USA. [Petty, Sara] Virginia Polytech Inst & State Univ, Blacksburg, VA 24061 USA. [Sampath, Sujatha] Univ Wisconsin Milwaukee, Milwaukee, WI USA. [Seestrom, Susan] Los Alamos Natl Lab, Los Alamos, NM 87545 USA. [Singh, Chandralekha] Univ Pittsburgh, Pittsburgh, PA 15260 USA. [Spencer, Cherrill] SLAC Natl Accelerator Lab, Menlo Pk, CA USA. [Woodle, Kathryne Sparks] Penn State Univ, University Pk, PA 16802 USA. [Yennello, Sherry] Texas A&M Univ, College Stn, TX 77843 USA. RP Cochran, GL (reprint author), Rochester Inst Technol, Rochester, NY 14623 USA. EM glcsps@rit.edu NR 11 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 978-0-7354-1344-3 J9 AIP CONF PROC PY 2015 VL 1697 AR 060045 DI 10.1063/1.4937692 PG 3 WC Physics, Multidisciplinary SC Physics GA BE9ID UT WOS:000377585500057 ER PT S AU Liu, JL Chen, Y Byna, S AF Liu, Jialin Chen, Yong Byna, Surendra GP IEEE TI Collective Computing for Scientific Big Data Analysis SO 2015 44TH INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING WORKSHOPS SE International Conference on Parallel Processing Workshops LA English DT Proceedings Paper CT 44th Annual International Conference on Parallel Processing Workshops (ICPPW) CY SEP 01-04, 2015 CL Beijing, PEOPLES R CHINA SP IEEE Comp Soc, Int Conf Parallel Proc, Tsinghua Univ, Int Assoc Comp & Commun, Baidu, Tsinghua Natl Lab Informat Sci & Technol DE collective computing; big data; map reduce ID I/O; PERFORMANCE AB Big science discovery requires an efficient computing framework in the high performance computing architecture. Traditional scientific data analysis relies on Message Passing Interface (MPI) and MPI-IO to achieve fast computing and low I/O bottleneck. Among them, two-phase collective I/O is commonly used to reduce data movement by optimizing the non-contiguous I/O pattern. However, the inherent constraint of collective I/O prevents it from having a flexible combination with computing and lacks an efficient non-blocking I/O-Computing framework in current HPC. In this work, we propose Collective Computing, a framework that breaks the constraint of the two-phase collective I/O and provides an efficient non-blocking computing paradigm with runtime support. The fundamental idea is to move the analysis stage in advance and insert the computation into the two-phase I/O, such that the data in the first I/O phase can be computed in place and the second shuffle phase is minimized with a reduce operation. We motivate this idea by profiling the I/O and CPU usage. With both theoretical analysis and evaluation on real application and benchmarks, we show that the collective computing can achieve 2.5X speedup and is promising in big scientific data analysis. C1 [Liu, Jialin; Chen, Yong] Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA. [Byna, Surendra] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. RP Liu, JL (reprint author), Texas Tech Univ, Dept Comp Sci, Lubbock, TX 79409 USA. EM jaln.liu@ttu.edu; yong.chen@ttu.edu; sbyna@lbl.gov NR 26 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1530-2016 BN 978-1-4673-7589-4 J9 INT CONF PARA PROC PY 2015 BP 129 EP 137 DI 10.1109/ICPPW.2015.22 PG 9 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BE9FD UT WOS:000377378800019 ER PT S AU Wang, X Tang, W Kettimuttu, R Lan, ZL AF Wang, Xin Tang, Wei Kettimuttu, Rajkumar Lan, Zhiling GP IEEE TI Utility-Based Scheduling for Bulk Data Transfers between Distributed Computing Facilities SO 2015 44TH INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING WORKSHOPS SE International Conference on Parallel Processing Workshops LA English DT Proceedings Paper CT 44th Annual International Conference on Parallel Processing Workshops (ICPPW) CY SEP 01-04, 2015 CL Beijing, PEOPLES R CHINA SP IEEE Comp Soc, Int Conf Parallel Proc, Tsinghua Univ, Int Assoc Comp & Commun, Baidu, Tsinghua Natl Lab Informat Sci & Technol DE data transfer scheduling; utility function; simulation AB Today's scientific applications increasingly involve large amounts of input/output data that must be moved among multiple computing facilities via wide-area networks (WANs). The bandwidth of WANs, however, is growing at a much smaller rate and thus becoming a bottleneck. Moreover, the network bandwidth has not been viewed as a limited resource, and thus coordinated allocation is lacking. Uncoordinated scheduling of competing data transfers over shared network links results in suboptimal system performance and poor user experiences. To address these problems, we propose a data transfer scheduler to coordinate and schedule data transfers between distributed computing facilities over WANs. Specifically, the scheduler prioritizes and allocates resources to data transfer requests based on user-centric utility functions in order to achieve maximum overall user satisfaction. We conducted trace-based simulation and demonstrated that our data transfer scheduling algorithms can considerably improve data transfer performance as well as quantified user satisfaction compared with traditional first-come, first-serve or short-job-first approaches. C1 [Wang, Xin; Lan, Zhiling] IIT, Dept Comp Sci, Chicago, IL 60616 USA. [Tang, Wei; Kettimuttu, Rajkumar] Argonne Natl Lab, Div Math & Comp Sci, Argonne, IL 60439 USA. RP Wang, X (reprint author), IIT, Dept Comp Sci, Chicago, IL 60616 USA. EM xwang149@hawk.iit.edu; wtang@mcs.anl.gov; kettimut@mcs.anl.gov; lan@iit.edu NR 27 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 1530-2016 BN 978-1-4673-7589-4 J9 INT CONF PARA PROC PY 2015 BP 175 EP 183 DI 10.1109/ICPPW.2015.37 PG 9 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BE9FD UT WOS:000377378800024 ER PT S AU Tselev, A Kolmakov, A AF Tselev, Alexander Kolmakov, Andrei GP IEEE TI Probing Nanoscale Objects in Liquids through Membranes with Near-Field Microwave Microscopy SO 2015 45TH EUROPEAN MICROWAVE CONFERENCE (EUMC) SE European Microwave Conference LA English DT Proceedings Paper CT 45th European Microwave Conference (EuMC) CY SEP 06-11, 2015 CL Paris, FRANCE SP Keysight Technol, COBHAM, Copper Mountain Technol, CST, Infineon, MiCIAN, Natl Instruments, ROHDE & SCHWARZ, THALES, ThalesAlenia, United Monolith Semiconductors, European Microwave Assoc, Horizon House, IEEE, IEEE MTT Soc, IEEE Antennas & Propagat Soc DE microwave imaging; scanning probe microscopy; impedance measurement; atomic force microscopy ID ELECTRON-MICROSCOPY AB In this work, scanning near-field microwave imaging was implemented to test the feasibility of the approach for in-situ studies of nanoscale objects immersed in liquids under thin dielectric membranes. It was found that mechanical strength and stability of SiN membranes on Si frames are sufficient for contact mode imaging in a standard AFM setup. Model polystyrene particles immersed in glycerol in contact with the membrane from the cavity side could be reliably detected. The probing depth of this imaging mode can be estimated to be approximately 100 nm. C1 [Tselev, Alexander] Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. [Kolmakov, Andrei] NIST, Ctr Nanoscale Sci & Technol, Gaithersburg, MD 20899 USA. RP Tselev, A (reprint author), Oak Ridge Natl Lab, Ctr Nanophase Mat Sci, Oak Ridge, TN 37831 USA. EM atselev@utk.edu; andrei.kolmakov@nist.gov RI Kolmakov, Andrei/B-1460-2017 OI Kolmakov, Andrei/0000-0001-5299-4121 NR 13 TC 0 Z9 0 U1 3 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2325-0305 BN 978-2-8748-7039-2 J9 EUR MICROW CONF PY 2015 BP 662 EP 665 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BE9BI UT WOS:000377204600163 ER PT J AU Shand, C McMorran, A Stewart, E Taylor, G AF Shand, Corinne McMorran, Alan Stewart, Emma Taylor, Gareth GP IEEE TI Exploiting Massive PMU Data Analysis for LV Distribution Network Model Validation SO 2015 50TH INTERNATIONAL UNIVERSITIES POWER ENGINEERING CONFERENCE (UPEC) LA English DT Proceedings Paper CT 50th International Universities Power Engineering Conference (UPEC) CY SEP 01-04, 2015 CL Staffordshire Univ, Sci Ctr, Fac Comp Engn & Sci, Stoke on Trent, ENGLAND HO Staffordshire Univ, Sci Ctr, Fac Comp Engn & Sci DE Data Communication; Phasor Measurement Units; Data Exchange; Open Standards; Power System Analysis AB As utilities move towards more intelligent and autonomous networks, there is increased requirement for the analysis of how these changes will affect network operations and performance. Phasor Measurement Units (PMUs) can be integrated into a network for the analysis and identification of bad data. As PMUs contain a Global Positioning System (GPS) chip, it is possible for them to determine their own location when connected to a network. By creating a Common Information Model (CIM) network model in the cloud, with embedded geographical data, the PMU would be able to connect to this and determine what it is connected to and where in a network it is located. Network data could then be collected and analysed to help identify any points of bad data. Challenges to be overcome include the building of the network model from the available geographical data, the automatic integration of the PMU with the network, and the authentication of the data. C1 [Shand, Corinne; Taylor, Gareth] Brunel Univ London, Uxbridge, Middx, England. [McMorran, Alan] Open Grid Syst Ltd, Nottingham, England. [Stewart, Emma] Lawrence Berkeley Natl Lab, Berkeley, CA USA. RP Shand, C (reprint author), Brunel Univ London, Uxbridge, Middx, England. EM corinne.shand@brunel.ac.uk; alan@opengrid.com; estewart@lbl.gov; gareth.taylor@brunel.ac.uk NR 11 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-9682-0 PY 2015 PG 4 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BE9FA UT WOS:000377369500039 ER PT S AU Ainsworth, N Johnson, B Lundstrom, B AF Ainsworth, Nathan Johnson, Brian Lundstrom, Blake GP IEEE TI A Fuzzy-Logic Subsumption Controller for Home Energy Management Systems SO 2015 NORTH AMERICAN POWER SYMPOSIUM (NAPS) SE North American Power Symposium LA English DT Proceedings Paper CT North American Power Symposium (NAPS) CY OCT 04-06, 2015 CL Charlotte, NC DE Home energy management systems; Behavioral control; Power generation control; Home automation AB Home Energy Management Systems (HEMS) are controllers that manage and coordinate the generation, storage, and loads in a home. These controllers are increasingly necessary to ensure that increasing penetrations of distributed energy resources are used effectively and do not disrupt the operation of the grid. In this paper, we propose a novel approach to HEMS design based on behavioral control methods, which do not require accurate models or predictions and are very responsive to changing conditions. We develop a proof-of-concept behavioral HEMS controller and show by simulation on an example home energy system that it capable of making context-dependent tradeoffs between goals under challenging conditions. C1 [Ainsworth, Nathan; Johnson, Brian; Lundstrom, Blake] Natl Renewable Energy Lab, 15013 Denver West Pkwy, Golden, CO 80401 USA. RP Ainsworth, N (reprint author), Natl Renewable Energy Lab, 15013 Denver West Pkwy, Golden, CO 80401 USA. EM nathan.ainsworth@nrel.gov; brian.johnson@nrel.gov; blake.lundstrom@nrel.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2163-4939 BN 978-1-4673-7389-0 J9 NORTH AMER POW SYMP PY 2015 PG 7 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BE9BK UT WOS:000377206200105 ER PT S AU Gao, WZ Tian, T Muljadi, E Zhang, YC Miller, M Wang, WS Wang, J AF Gao, Wenzhong Tian, Tian Muljadi, Eduard Zhang, Yincheng Miller, Mackay Wang, Weisheng Wang, Jing GP IEEE TI Comparative Study of Standards for Grid-Connected Wind Power Plant in China and the US SO 2015 NORTH AMERICAN POWER SYMPOSIUM (NAPS) SE North American Power Symposium LA English DT Proceedings Paper CT North American Power Symposium (NAPS) CY OCT 04-06, 2015 CL Charlotte, NC DE wind power; wind power standard AB The rapid deployment of wind power has made grid integration and operational issues focal points in industry discussions and research. Compliance with grid connection standards for wind power plants (WPP) is crucial to ensuring the safe and stable operation of the electric power grid. The standards for grid-connected WPPs in China and the United States are compared in this paper to facilitate further improvements to the standards and enhance the development of wind power equipment. Detailed analyses in power quality, low-voltage ride-through capability, active power control, reactive power control, voltage control, and wind power forecasting are provided to enhance the understanding of grid codes in the two largest markets of wind power. C1 [Gao, Wenzhong] Univ Denver, Dept Elect & Comp Engn, Denver, CO 80210 USA. [Tian, Tian; Muljadi, Eduard; Zhang, Yincheng; Miller, Mackay] Natl Renewable Energy Lab, Golden, CO 80401 USA. [Wang, Weisheng] China Elect Power Res Inst, Beijing, Peoples R China. [Wang, Jing] Wuhan Univ, Wuhan 430072, Peoples R China. RP Gao, WZ (reprint author), Univ Denver, Dept Elect & Comp Engn, Denver, CO 80210 USA. EM wenzhong.gao@du.edu; tian.tian@nrel.gov NR 18 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2163-4939 BN 978-1-4673-7389-0 J9 NORTH AMER POW SYMP PY 2015 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BE9BK UT WOS:000377206200161 ER PT S AU Sharma, I Canizares, C Bhattacharya, K AF Sharma, Isha Canizares, Claudio Bhattacharya, Kankar GP IEEE TI Residential Micro-Hub Load Model Using Neural Network SO 2015 NORTH AMERICAN POWER SYMPOSIUM (NAPS) SE North American Power Symposium LA English DT Proceedings Paper CT North American Power Symposium (NAPS) CY OCT 04-06, 2015 CL Charlotte, NC DE Demand response; optimization; residential energy hubs; home energy management system; neural networks; smart grids ID ENERGY HUBS AB This paper presents the modeling of a residential micro-hub load based on real measurements and simulation data obtained using the Energy Hub Management System (EHMS) model of a residential load. A neural network (NN) is used to estimate the load model as a function of time, temperature, peak demand, and energy price. Different NN training approaches are compared to determine the best function to be used, based on the available data. Also, the number of hidden layer neurons are varied to obtain the best fit for the NN model. The results show that the proposed NN model is able to properly represent the behavior of an actual residential micro-hub. C1 [Sharma, Isha] Univ Waterloo, Waterloo, ON N2L 3G1, Canada. [Canizares, Claudio; Bhattacharya, Kankar] Univ Waterloo, Dept Elect & Comp Engn, Waterloo, ON N2L 3G1, Canada. RP Sharma, I (reprint author), Oak Ridge Natl Lab, Energy & Environm Sci Directorate, Oak Ridge, TN 37831 USA. EM sharmai@ornl.gov; ccanizar@uwaterloo.ca; kankar@uwaterloo.ca NR 10 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2163-4939 BN 978-1-4673-7389-0 J9 NORTH AMER POW SYMP PY 2015 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BE9BK UT WOS:000377206200012 ER PT S AU Yao, Y Gao, WZ Momoh, J Muljadi, E AF Yao, Yin Gao, Wenzhong Momoh, James Muljadi, Eduard GP IEEE TI Economic Dispatch for Microgrid Containing Electric Vehicles via Probabilistic Modelling SO 2015 NORTH AMERICAN POWER SYMPOSIUM (NAPS) SE North American Power Symposium LA English DT Proceedings Paper CT North American Power Symposium (NAPS) CY OCT 04-06, 2015 CL Charlotte, NC DE Transportation electrification; plug-in hybrid electric vehicle; probabilistic distribution model; stochastic model; microgrid; economic dispatch AB In this paper, an economic dispatch model with probabilistic modeling is developed for microgrid. Electric power supply in microgrid consists of conventional power plants and renewable energy power plants, such as wind and solar power plants. Due to the fluctuation of solar and wind plants' output, an empirical probabilistic model is developed to predict their hourly output. According to different characteristics of wind and solar plants, the parameters for probabilistic distribution are further adjusted individually for both power plants. On the other hand, with the growing trend of Plug-in Electric Vehicle (PHEV), an integrated microgrid system must also consider the impact of PHEVs. Not only the charging loads from PHEVs, but also the discharging output via Vehicle to Grid (V2G) method can greatly affect the economic dispatch for all the micro energy sources in microgrid. This paper presents an optimization method for economic dispatch in microgrid considering conventional, renewable power plants, and PHEVs. The simulation results reveal that PHEVs with V2G capability can be an indispensable supplement in modern microgrid. C1 [Yao, Yin; Gao, Wenzhong] Univ Denver, Dept Elect & Comp Engn, Denver, CO 80210 USA. [Momoh, James] Howard Univ, Dept Elect & Comp Engn, Washington, DC 20059 USA. [Muljadi, Eduard] Natl Renewable Energy Lab, Golden, CO 80401 USA. RP Yao, Y (reprint author), Univ Denver, Dept Elect & Comp Engn, Denver, CO 80210 USA. EM Yin.Yao@du.edu; Wenzhong.Gao@du.edu; jmomoh@Howard.edu; eduard.muljadi@nrel.gov NR 17 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2163-4939 BN 978-1-4673-7389-0 J9 NORTH AMER POW SYMP PY 2015 PG 6 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BE9BK UT WOS:000377206200179 ER PT J AU Darquenne, C Lamm, WJ Fine, JM Corley, RA Glenny, RW AF Darquenne, C. Lamm, W. J. Fine, J. M. Corley, R. A. Glenny, R. W. TI Effect Of Mild-To-Moderate COPD Disease On The Fate Of Aerosol Bolus Inhalations SO AMERICAN JOURNAL OF RESPIRATORY AND CRITICAL CARE MEDICINE LA English DT Meeting Abstract CT International Conference of the American-Thoracic-Society (ATS) CY MAY 15-20, 2015 CL Denver, CO SP Amer Thorac Soc C1 [Darquenne, C.; Fine, J. M.] Univ Calif San Diego, La Jolla, CA 92093 USA. [Darquenne, C.; Lamm, W. J.; Glenny, R. W.] Univ Washington, Seattle, WA 98195 USA. [Corley, R. A.] Pacific NW Natl Lab, Richland, WA 99352 USA. EM cdarquenne@ucsd.edu NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER THORACIC SOC PI NEW YORK PA 25 BROADWAY, 18 FL, NEW YORK, NY 10004 USA SN 1073-449X EI 1535-4970 J9 AM J RESP CRIT CARE JI Am. J. Respir. Crit. Care Med. PY 2015 VL 191 MA A5035 PG 1 WC Critical Care Medicine; Respiratory System SC General & Internal Medicine; Respiratory System GA DO2AW UT WOS:000377582806469 ER PT J AU Rumley, S Calhoun, DM Rodrigues, A Hammond, S Bergman, K AF Rumley, Sebastien Calhoun, David M. Rodrigues, Arun Hammond, Simon Bergman, Keren GP IEEE TI Toward Transparent Optical Networking in Exascale Computers SO ECOC 2015 41ST EUROPEAN CONFERENCE ON OPTICAL COMMUNICATION LA English DT Proceedings Paper CT 41st European Conference on Optical Communication (ECOC) CY SEP 27-OCT 01, 2015 CL Valencia, SPAIN SP Univ Politecnica Valencia, HUAWEI, Telefonica, ADVA, VLC Photon, FYLA, Anritsu, Nat Photon, Yenista Opt, Inst Telecomunicaciones Applicaciones Multimedia AB We review the requirements and expectations of future Supercomputer architectures, analyse how transparent optical networking might contribute to these future systems scalable performance, and develop the most immediate challenges for optical system developers in this context. C1 [Rumley, Sebastien; Calhoun, David M.; Bergman, Keren] Columbia Univ, New York, NY 10027 USA. [Rodrigues, Arun; Hammond, Simon] Sandia Natl Labs, Livermore, CA 94550 USA. RP Rumley, S (reprint author), Columbia Univ, New York, NY 10027 USA. EM bergman@ee.columbia.edu NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-8-4608-1741-3 PY 2015 PG 3 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BE9FB UT WOS:000377373100008 ER PT S AU Boring, RL Ulrich, TA Lew, RT AF Boring, Ronald L. Ulrich, Thomas A. Lew, Roger T. BA Stephanidis, C BF Stephanidis, C TI Dynamic Operations Wayfinding System (DOWS) for Nuclear Power Plants SO HCI INTERNATIONAL 2015 - POSTERS' EXTENDED ABSTRACTS, PT II SE Communications in Computer and Information Science LA English DT Proceedings Paper CT 2nd International Conference on Learning and Collaboration Technologies / 17th International Conference on Human-Computer Interaction CY AUG 02-07, 2015 CL Los Angeles, CA DE Nuclear power plant; Computer-based procedures; Wayfinding; Severe accident AB A novel software tool is proposed to aid reactor operators in responding to upset plant conditions. The purpose of the Dynamic Operations Wayfinding System (DOWS) is to diagnose faults, prioritize those faults, identify paths to resolve those faults, and deconflict the optimal path for the operator to follow. The objective of DOWS is to take the guesswork out of the best way to combine procedures to resolve compound faults, mitigate low threshold events, or respond to severe accidents. DOWS represents a uniquely flexible and dynamic computer-based procedure system for operators. C1 [Boring, Ronald L.; Ulrich, Thomas A.; Lew, Roger T.] Idaho Natl Lab, Idaho Falls, ID 83415 USA. RP Boring, RL (reprint author), Idaho Natl Lab, Idaho Falls, ID 83415 USA. EM ronald.boring@inl.gov; thomas.ulrich@inl.gov; roger.lew@inl.gov NR 8 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 1865-0929 BN 978-3-319-21383-5; 978-3-319-21382-8 J9 COMM COM INF SC PY 2015 VL 529 BP 497 EP 502 DI 10.1007/978-3-319-21383-5_83 PG 6 WC Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BE9FN UT WOS:000377405300083 ER PT S AU Wong, K D'Azevedo, E Hu, Z Kail, A Su, SQ AF Wong, Kwai D'Azevedo, Eduardo Hu, Zhiang Kail, Andrew Su, Shiquan BE Cojocaru, MG Kotsireas, IS Makarov, RN Melnik, RVN Shodiev, H TI Solving a Large-Scale Thermal Radiation Problem Using an Interoperable Executive Library Framework on Petascale Supercomputers SO INTERDISCIPLINARY TOPICS IN APPLIED MATHEMATICS, MODELING AND COMPUTATIONAL SCIENCE SE Springer Proceedings in Mathematics & Statistics LA English DT Proceedings Paper CT Interdisciplinary International Conference on Applied Mathematics, Modelling and Computational Science (AMMCS) CY AUG 26-30, 2013 CL Wilfrid Laurier Univ, Waterloo Campus, Waterloo, CANADA HO Wilfrid Laurier Univ, Waterloo Campus AB We present a novel methodology to compute the transient thermal condition of a set of objects in an open space environment. The governing energy equation and the convective energy transfer are solved by the sparse iterative solvers. The average radiating energy on a set of surfaces is represented by a linear system of the radiosity equations, which is factorized by an out-of-core parallel Cholesky decomposition solver. The coupling and interplay of the direct radiosity solver using graphics processing units (GPUs) and the CPU-based sparse solver are handled by a light weight software integrator called Interoperable Executive Library (IEL). IEL manages the distribution of data and memory, coordinates communication among parallel processes, and also directs execution of the set of loosely coupled physics tasks as warranted by the thermal condition of the simulated object and its surrounding environment. C1 [Wong, Kwai; Kail, Andrew; Su, Shiquan] Univ Tennessee, 1122 Volunteer Blvd, Knoxville, TN 37996 USA. [D'Azevedo, Eduardo] ORNL, Oak Ridge, TN 37831 USA. [Hu, Zhiang] Chinese Univ Hong Kong, Shatin, Hong Kong, Peoples R China. RP Wong, K (reprint author), Univ Tennessee, 1122 Volunteer Blvd, Knoxville, TN 37996 USA. EM kwong@utk.edu; e6d@ornl.gov; hza8816145@gmail.com; akail@utk.edu; ssu2@utk.edu NR 3 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2194-1009 BN 978-3-319-12307-3; 978-3-319-12306-6 J9 SPRINGER P MATH STAT PY 2015 VL 117 BP 501 EP 507 DI 10.1007/978-3-319-12307-3_72 PG 7 WC Mathematics, Applied; Mathematics; Statistics & Probability SC Mathematics GA BE9FG UT WOS:000377391500072 ER PT S AU Xia, QL Salafia, C Morgan, S AF Xia, Qinglan Salafia, Carolyn Morgan, Simon BE Cojocaru, MG Kotsireas, IS Makarov, RN Melnik, RVN Shodiev, H TI Optimal Transport and Placental Function SO INTERDISCIPLINARY TOPICS IN APPLIED MATHEMATICS, MODELING AND COMPUTATIONAL SCIENCE SE Springer Proceedings in Mathematics & Statistics LA English DT Proceedings Paper CT Interdisciplinary International Conference on Applied Mathematics, Modelling and Computational Science (AMMCS) CY AUG 26-30, 2013 CL Wilfrid Laurier Univ, Waterloo Campus, Waterloo, CANADA HO Wilfrid Laurier Univ, Waterloo Campus AB The human newborn is a reflection of the entirety of nutrients transferred from the maternal to the fetal circulation across the placenta during gestation. By extension, birth weight and newborn health depend on placental function. The goal of this chapter is to introduce the use of optimal transport modeling to study the expected effects of (i) placental size, (ii) placental shape (separate from size), and (iii) the position of insertion of the umbilical cord, on birth weight and placental functional efficiency. For each placenta (N = 1110), a total transport cost based on all measurements (i), (ii), and (iii) is given by the model. This computed cost is highly correlated with measured birth weight, placenta weight, the fetal-placental weight ratio (FPR), and the metabolic scaling factor beta. Next, a shape factor is calculated in a model of the total transport cost if each placenta were rescaled to have a unit area chorionic plate (thus separating shape from size). This shape factor is also highly correlated with birth weight, and after adjustment for placental weight, is highly correlated with the metabolic scaling factor beta. C1 [Xia, Qinglan] Univ Calif Davis, Dept Math, Davis, CA 95616 USA. [Salafia, Carolyn] Placental Analyt LLC, Larchmont, NY 10538 USA. [Salafia, Carolyn] New York State Off Mental Retardat & Dev Disabil, Inst Basic Res, Staten Isl, NY USA. [Morgan, Simon] Los Alamos Natl Lab, Los Alamos, NM 87544 USA. RP Xia, QL (reprint author), Univ Calif Davis, Dept Math, Davis, CA 95616 USA. EM glxia@math.ucdavis.edu; carolyn.salafia@gmail.com; morga084@gmail.com NR 11 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI NEW YORK PA 233 SPRING STREET, NEW YORK, NY 10013, UNITED STATES SN 2194-1009 BN 978-3-319-12307-3; 978-3-319-12306-6 J9 SPRINGER P MATH STAT PY 2015 VL 117 BP 509 EP 515 DI 10.1007/978-3-319-12307-3_73 PG 7 WC Mathematics, Applied; Mathematics; Statistics & Probability SC Mathematics GA BE9FG UT WOS:000377391500073 ER PT B AU Beutler, J Hodges, VC Clement, JJ Stevens, J Cole, EI Silverman, S Chivas, R AF Beutler, Joshua Hodges, V. Carter Clement, J. Joseph Stevens, Jeffery Cole, Edward I., Jr. Silverman, Scott Chivas, Robert GP ASM TI Visible Light LVP on Bulk Silicon Devices SO ISTFA 2015: CONFERENCE PROCEEDINGS FROM THE 41ST INTERNATIONAL SYMPOSIUM FOR TESTING AND FAILURE ANALYSIS LA English DT Proceedings Paper CT 41st International Symposium for Testing and Failure Analysis (ISTFA 2015) CY NOV 01-05, 2015 CL Portland, OR SP Elect Device Failure Anal Soc, ASM Int AB Visible light laser voltage probing (LVP) for improved backside optical spatial resolution is demonstrated on ultra thinned bulk Si samples. A prototype system for data acquisition, a method to produce ultra-thinned bulk samples as well as LVP signal, imaging, and waveform acquisition are described on bulk Si devices. Spatial resolution and signal comparison with conventional, infrared LVP analysis is discussed. C1 [Beutler, Joshua; Hodges, V. Carter; Clement, J. Joseph; Stevens, Jeffery; Cole, Edward I., Jr.] Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. [Silverman, Scott; Chivas, Robert] Varioscale Inc, San Marcos, CA USA. RP Beutler, J (reprint author), Sandia Natl Labs, POB 5800, Albuquerque, NM 87185 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 USA BN 978-1-62708-102-3; 978-1-62708-103-0 PY 2015 BP 6 EP 13 PG 8 WC Engineering, Electrical & Electronic; Materials Science, Characterization & Testing; Physics, Applied SC Engineering; Materials Science; Physics GA BE9HI UT WOS:000377554900002 ER PT S AU Saunders, EC Fearey, BL AF Saunders, Emily Cura Fearey, Bryan L. BE Apikyan, S Diamond, D TI To Pursue an Independent Nuclear Deterrent or Not? Japan's and South Korea's Nuclear Decision Making Models SO NUCLEAR THREATS AND SECURITY CHALLENGES SE NATO Science for Peace and Security Series B-Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Preparedness for Nuclear and Radiological Threats CY NOV 18-20, 2014 CL Los Angeles, CA SP NATO AB Concerns regarding potential nuclear proliferation activities of South Korea and Japan have increased following recent nuclear tests conducted by North Korea and following regional hegemonic actions by China. Both of these countries have bilateral security agreements with the United States, and are covered under the so-called "nuclear umbrella." This paper poses the question: If these countries enjoy these security guarantees, what factors could contribute to their decision to pursue proliferation activities? This paper reviews some of the relevant literature on nuclear-decision making before proposing that perhaps these models are complementary rather than competing. For the purposes of South Korea and Japan, this paper asserts that there are two contributing factors that could cause either country to engage in proliferation activities: loss of confidence in the U.S. commitment to its extended deterrence obligations and regional security threats. Using case studies, this paper reviews the past proliferation activities by these two countries, and examines the mitigating factors that led to past decisions, and how such similar factors could impact future decisions. This paper uses historical analysis and investigation of contemporary security issues to examine the roles that extended deterrence and regional security have played and may play in the future, in each country's interests in engaging in increased nuclear proliferation-sensitive activities. C1 [Saunders, Emily Cura] Vanderbilt Univ, Latin Amer Publ Opin Project, Alamos, NM USA. [Fearey, Bryan L.] Los Alamos Natl Lab, Natl Secur Off, Los Alamos, NM 87544 USA. RP Fearey, BL (reprint author), Los Alamos Natl Lab, Natl Secur Off, Los Alamos, NM 87544 USA. EM Emily.c.saunders@vanderbilt.edu; bfearey@lanl.gov NR 20 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-94-017-9936-2; 978-94-017-9894-5; 978-94-017-9893-8 J9 NATO SCI PEACE SEC B PY 2015 BP 23 EP 43 DI 10.1007/978-94-017-9894-5_3 PG 21 WC Multidisciplinary Sciences; Nuclear Science & Technology SC Science & Technology - Other Topics; Nuclear Science & Technology GA BE9EU UT WOS:000377356200003 ER PT S AU Bari, RA AF Bari, Robert A. BE Apikyan, S Diamond, D TI Proliferation Resistance and Physical Protection (PR&PP) Evaluation Methodology and Applications SO NUCLEAR THREATS AND SECURITY CHALLENGES SE NATO Science for Peace and Security Series B-Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Preparedness for Nuclear and Radiological Threats CY NOV 18-20, 2014 CL Los Angeles, CA SP NATO AB This paper presents a summary of a program within the Generation IV International Forum on the evaluation methodology for proliferation resistance and physical protection (PR&PP) of advanced nuclear energy systems (NESs). For a proposed NES design, the methodology defines a set of challenges, analyzes system response to these challenges, and assesses outcomes. The challenges to the NESs are the threats posed by potential actors (proliferant States or sub-national adversaries). The characteristics of NESs, both technical and institutional, are used to evaluate the response of the system and to determine its resistance against proliferation threats and robustness against sabotage and terrorism threats. The outcomes of the system response are expressed in terms of a set of measures, which are the high-level PR&PP characteristics of the NES. C1 [Bari, Robert A.] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Bari, RA (reprint author), Brookhaven Natl Lab, Upton, NY 11973 USA. EM bari@bnl.gov NR 6 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-94-017-9936-2; 978-94-017-9894-5; 978-94-017-9893-8 J9 NATO SCI PEACE SEC B PY 2015 BP 51 EP 58 DI 10.1007/978-94-017-9894-5_5 PG 8 WC Multidisciplinary Sciences; Nuclear Science & Technology SC Science & Technology - Other Topics; Nuclear Science & Technology GA BE9EU UT WOS:000377356200005 ER PT S AU Vetter, K Chivers, D Quiter, B AF Vetter, Kai Chivers, Dan Quiter, Brian BE Apikyan, S Diamond, D TI Advanced Concepts in Multi-dimensional Radiation Detection and Imaging SO NUCLEAR THREATS AND SECURITY CHALLENGES SE NATO Science for Peace and Security Series B-Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Preparedness for Nuclear and Radiological Threats CY NOV 18-20, 2014 CL Los Angeles, CA SP NATO ID EFFICIENCY MULTIMODE IMAGER; COMPTON CAMERA AB Advanced concepts in radiation detection and imaging significantly enhance the capabilities relevant for nuclear security and safety as well as in prevention and in response to nuclear and radiological attack. More recent developments in combining radiological and nuclear detection concepts with complementary sensor data and information provide yet further improved capabilities in these areas as well as in risk management and mitigation. We briefly discuss some of the new concepts and technologies that are being developed and implemented in the Berkeley Applied Nuclear Physics program. They range from micrometer resolution scale instruments that enable new means in detecting and reconstructing gamma rays to meter-scale instruments necessary to enable standoff detection capabilities. Complementary to that, contextual and environmental data are being measured and correlated with nuclear signatures and backgrounds to increase the ability to detect weak sources in the midst of spatially and temporally varying backgrounds. The concept of three-dimensional, volumetric imaging will be described as well the concept of the Nuclear Street View, both related concepts relevant for the detection and characterization of nuclear materials and associated activities. Finally, the impact of these technologies in the effective assessment of structures and radiation after a radiological or nuclear event will be discussed. C1 [Vetter, Kai; Chivers, Dan; Quiter, Brian] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. [Vetter, Kai] Univ Calif Berkeley, Berkeley, CA 94720 USA. RP Vetter, K (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Berkeley, CA 94720 USA. EM kvetter@berkeley.edu NR 18 TC 1 Z9 1 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-94-017-9936-2; 978-94-017-9894-5; 978-94-017-9893-8 J9 NATO SCI PEACE SEC B PY 2015 BP 179 EP 192 DI 10.1007/978-94-017-9894-5_17 PG 14 WC Multidisciplinary Sciences; Nuclear Science & Technology SC Science & Technology - Other Topics; Nuclear Science & Technology GA BE9EU UT WOS:000377356200017 ER PT S AU Warner, BE Rath, K AF Warner, Bruce E. Rath, Karen BE Apikyan, S Diamond, D TI Lawrence Livermore National Laboratory's Contribution to US Preparedness for Nuclear and Radiological Threats SO NUCLEAR THREATS AND SECURITY CHALLENGES SE NATO Science for Peace and Security Series B-Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Preparedness for Nuclear and Radiological Threats CY NOV 18-20, 2014 CL Los Angeles, CA SP NATO AB This talk highlights a few of Lawrence Livermore National Laboratory's many contributions to U.S. nuclear and radiological threat preparedness. The Laboratory is part of a larger partnership between the DOE/NNSA, the national laboratories, and other agencies of the U.S. government to support emergency response and consequence management for nuclear and radiological incidents. Lawrence Livermore has many decades of experience in understanding the threat posed by the full range of weapons of mass destruction worldwide, including chemical, biological, nuclear, and radiological. At the other end of the preparedness spectrum, the Laboratory has a long-standing role in support of U.S. nuclear and radiological incident response including atmospheric transport and dispersion modeling and nuclear forensics assessments and laboratory analyses of special nuclear and other radiological materials. We staff incident response teams, support planning and preparedness, and provide first responder training and proficiency assessments. The combination of being threat informed and operationally involved provides valuable insight into the research and development needs of the U.S. for preparedness. The Laboratory is accomplished in the development of radiation detection equipment and systems. Recent advances include the development of novel radiation detection materials, such as a plastic scintillator that can differentiate neutrons and gamma rays that could be used in portal monitors. Lawrence Livermore also supports U.S. nonproliferation and treaty verification goals with technical and operation support for the International Atomic Energy Agency (IAEA) and the Comprehensive Nuclear-Test-Ban Treaty Organization. C1 [Warner, Bruce E.; Rath, Karen] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. RP Warner, BE (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM warner2@llnl.gov NR 0 TC 0 Z9 0 U1 2 U2 2 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-94-017-9936-2; 978-94-017-9894-5; 978-94-017-9893-8 J9 NATO SCI PEACE SEC B PY 2015 BP 247 EP 255 DI 10.1007/978-94-017-9894-5_22 PG 9 WC Multidisciplinary Sciences; Nuclear Science & Technology SC Science & Technology - Other Topics; Nuclear Science & Technology GA BE9EU UT WOS:000377356200022 ER PT S AU Oxford, V AF Oxford, Vayl BE Apikyan, S Diamond, D TI The Emerging Threat Environment and the Impact on Nuclear Preparedness SO NUCLEAR THREATS AND SECURITY CHALLENGES SE NATO Science for Peace and Security Series B-Physics and Biophysics LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Preparedness for Nuclear and Radiological Threats CY NOV 18-20, 2014 CL Los Angeles, CA SP NATO AB The emerging threat environment is dominated by several critical factors that will have significant consequences on the global security environment along with commensurate impacts on nuclear preparedness. The combination of dissolution of nation states into culturally and ethnically aligned entities, the reduction of military presence in the Middle East resulting from the withdrawal of troops from Iraq and Afghanistan, the likelihood of Iran becoming a nuclear weapon state and the recent Russian aggression in Crimea and Ukraine give rise to a geopolitical and associated threat environment that is unprecedented in recent history. This paper explores these factors and identifies some the potential security impacts as well as the likely consequences or challenges to nuclear security and preparedness. Lastly, proposed next steps for the U.S. and NATO/Europe are provided as a means to initiate a dialogue to protect against and mitigate the effects generated by these global factors. C1 [Oxford, Vayl] Pacific NW Natl Lab, Richland, WA 99352 USA. RP Oxford, V (reprint author), Pacific NW Natl Lab, Richland, WA 99352 USA. EM Vayl.Oxford@pnnl.gov NR 2 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 1871-465X BN 978-94-017-9936-2; 978-94-017-9894-5; 978-94-017-9893-8 J9 NATO SCI PEACE SEC B PY 2015 BP 257 EP 263 DI 10.1007/978-94-017-9894-5_23 PG 7 WC Multidisciplinary Sciences; Nuclear Science & Technology SC Science & Technology - Other Topics; Nuclear Science & Technology GA BE9EU UT WOS:000377356200023 ER PT S AU Heckenbergerova, J Janata, M Musilek, P Wang, JH AF Heckenbergerova, Jana Janata, Marek Musilek, Petr Wang, Jianhui BE Rusek, S Gono, R TI Analysis of Wind Ramp Events Using Their Conditional Probabilities from PCA 3D Tables SO PROCEEDINGS OF THE 2015 16TH INTERNATIONAL SCIENTIFIC CONFERENCE ON ELECTRIC POWER ENGINEERING (EPE) SE International Scientific Conference on Electric Power Engineering LA English DT Proceedings Paper CT 16th International Scientific Conference on Electric Power Engineering (EPE) CY MAY 20-22, 2015 CL Kouty nad Desnou, CZECH REPUBLIC SP Tech Univ Ostrava, Fac Elect Engn & Comp Sci, Dept Elect Power Engn, European Social Fund Czech Republ, European Union, Minist Educ, Youth & Sports, OP Educ Competitiveness, IEEE Power & Energy Soc, Czechoslovakia Sect, Minist Ind & Trade, World Energy Council, Ministerstvo Hospodarstva DE wind ramp event; wind power production; principal component analysis(PCA); conditional probability ID STATISTICAL VARIABLES; PRINCIPAL COMPONENTS; COMPLEX AB Wind is one of the fastest growing sources of renewable energy. However, its intermittency and stochastic nature often hamper integration of wind-generated energy in electric power networks. The most significant obstacles to efficient wind integration are the wind ramps, sudden changes of wind power output caused by dramatic changes in wind speed. Most ramp prediction methods derive future ramp estimates from forecast power series. This contribution suggests a different approach that would directly analyze wind power time series and other weather parameters to identify specific patterns and dependencies signaling approaching ramp events. In this paper, the 3D tables of ramp events' conditional probabilities are evaluated using principal component analysis. Two different datasets are analyzed. First one contains power production hourly collected from August 2011 to July 2012 on sample wind farm located close to Lethbridge, AB Canada. The other consists of total BPA wind power production in 2013 with 5 minute resolution. Frequency tables for the first three principal components are used to evaluate the conditional probability of a forthcoming wind ramp event. Utilization of resulting 3D tables for wind ramp event forecast is tested on the last quarter of the data. Advantage of proposed methodology compared to conventional methods is that numerical weather prediction (NWP) model producing wind forecasts is not required. C1 [Heckenbergerova, Jana; Janata, Marek] Univ Pardubice, Elect Engn & Informat, Pardubice, Czech Republic. [Musilek, Petr] Univ Alberta, Elect & Comp Engn, Edmonton, AB, Canada. [Wang, Jianhui] Argonne Natl Lab, Div Energy Syst, Argonne, IL 60439 USA. RP Heckenbergerova, J (reprint author), Univ Pardubice, Elect Engn & Informat, Pardubice, Czech Republic. EM jana.heckenbergerova@upce.cz; marek.janata@student.upce.cz; petr.musilek@ualberta.ca; jianhui.wang@anl.gov NR 15 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2376-5623 BN 978-1-4673-6788-2 J9 INT SCI CONF ELECTR PY 2015 BP 158 EP 162 PG 5 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA BE9HA UT WOS:000377548600031 ER PT S AU Basak, S Bazavov, A Bernard, C DeTar, C Freeland, E Foley, J Gottlieb, S Heller, UM Komijani, J Laiho, J Levkova, L Li, R Osborn, J Sugar, RL Torok, A Toussaint, D Van de Water, RS Zhou, R AF Basak, S. Bazavov, A. Bernard, C. DeTar, C. Freeland, E. Foley, J. Gottlieb, Steven Heller, U. M. Komijani, J. Laiho, J. Levkova, L. Li, R. Osborn, J. Sugar, R. L. Torok, A. Toussaint, D. Van de Water, R. S. Zhou, R. CA MILC Collaboration GP IOP TI Electromagnetic effects on the light hadron spectrum SO XXVI IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (CCP2014) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 26th IUPAP Conference on Computational Physics (CCP) CY AUG 11-14, 2014 CL Boston Univ, George Sherman Union, Boston, MA SP IUPAP, APS, Boston Coll, Clark Univ, Harvard Univ, Inst Appl Computat Sci, NE Univ, Univ Massachusetts Amherst, Univ Massachusetts Boston, Intel Corp, Cambridge Univ Press, Elsevier, Inst Phys Publishing, Amer Inst Phys Publishing HO Boston Univ, George Sherman Union AB For some time, the MILC Collaboration has been studying electromagnetic effects on light mesons. These calculations use fully dynamical QCD, but only quenched photons, which suffices to NLO in XPT. That is, the sea quarks are electrically neutral, while the valence quarks carry charge. For the photons we use the non-compact formalism. We have new results with lattice spacing as small as 0.045 fm and a large range of volumes. We consider how well chiral perturbation theory describes these results and the implications for light quark masses. C1 [Basak, S.] NISER, Bhubaneswar 751005, Orissa, India. [Bazavov, A.] Univ Iowa, Dept Phys & Astron, Iowa City, IA 52240 USA. [Bernard, C.; Komijani, J.] Washington Univ, Dept Phys, St Louis, MO 63130 USA. [DeTar, C.; Foley, J.; Levkova, L.; Torok, A.] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA. [Freeland, E.] Sch Art Inst Chicago, Liberal Arts Dept, Chicago, IL USA. [Gottlieb, Steven] Indiana Univ, Dept Phys, Bloomington, IN 47405 USA. [Heller, U. M.] Amer Phys Soc, Ridge, NY 11961 USA. [Laiho, J.] Syracuse Univ, Dept Phys, Syracuse, NY 13244 USA. [Osborn, J.] Argonne Natl Lab, ALCF, Argonne, IL 60439 USA. [Sugar, R. L.] Univ Calif Santa Barbara, Dept Phys, Santa Barbara, CA 93106 USA. [Toussaint, D.] Univ Arizona, Dept Phys, Tucson, AZ 85721 USA. [Van de Water, R. S.; Zhou, R.] Fermilab Natl Accelerator Lab, Dept Theoret Phys, Batavia, IL 60510 USA. RP Basak, S (reprint author), NISER, Bhubaneswar 751005, Orissa, India. NR 12 TC 2 Z9 2 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 640 AR 012052 DI 10.1088/1742-6596/640/1/012052 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA BE8IB UT WOS:000376508100052 ER PT S AU Bokil, VA Gibson, NL McGregor, DA Woodside, CR AF Bokil, V. A. Gibson, N. L. McGregor, D. A. Woodside, C. R. GP IOP TI Toward Estimating Current Densities in Magnetohydrodynamic Generators SO XXVI IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (CCP2014) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 26th IUPAP Conference on Computational Physics (CCP) CY AUG 11-14, 2014 CL Boston Univ, George Sherman Union, Boston, MA SP IUPAP, APS, Boston Coll, Clark Univ, Harvard Univ, Inst Appl Computat Sci, NE Univ, Univ Massachusetts Amherst, Univ Massachusetts Boston, Intel Corp, Cambridge Univ Press, Elsevier, Inst Phys Publishing, Amer Inst Phys Publishing HO Boston Univ, George Sherman Union AB We investigate the idea of reconstructing current densities in a magnetohydrodynamic (MHD) generator channel from external magnetic flux density measurements in order to determine the existence and location of damaging arcs. We model the induced fields,which are usually neglected in low magnetic Reynold's number flows,using a natural fixed point iteration. Further we present a sensitivity analysis of induced fields to current density profiles in a 3D, yet simplified model. C1 [Bokil, V. A.; Gibson, N. L.; McGregor, D. A.] Oregon State Univ, Corvallis, OR 97331 USA. [McGregor, D. A.; Woodside, C. R.] Natl Energy Technol Lab, Albany, OR 97321 USA. RP Bokil, VA (reprint author), Oregon State Univ, Corvallis, OR 97331 USA. EM mcgregod@math.oregonstate.edu NR 7 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 640 AR 012032 DI 10.1088/1742-6596/640/1/012032 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA BE8IB UT WOS:000376508100032 ER PT S AU Eisenbach, M Perera, D Landau, DP Nicholson, DM Yin, JQ Browns, G AF Eisenbach, Markus Perera, Dilina Landau, David P. Nicholson, Don M. Yin, Jungqi Browns, Gregory GP IOP TI Magnetic Materials at finite Temperatures: thermodynamics and combined spin and molecular dynamics derived from first principles calculations SO XXVI IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (CCP2014) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 26th IUPAP Conference on Computational Physics (CCP) CY AUG 11-14, 2014 CL Boston Univ, George Sherman Union, Boston, MA SP IUPAP, APS, Boston Coll, Clark Univ, Harvard Univ, Inst Appl Computat Sci, NE Univ, Univ Massachusetts Amherst, Univ Massachusetts Boston, Intel Corp, Cambridge Univ Press, Elsevier, Inst Phys Publishing, Amer Inst Phys Publishing HO Boston Univ, George Sherman Union ID MAGNETOCRYSTALLINE ANISOTROPY ENERGY; IRON; SIMULATIONS; ALGORITHM; SYSTEMS; NICKEL; MODEL AB We present a unified approach to describe the combined behavior of the atomic and magnetic degrees of freedom in magnetic materials. Using Monte Carlo simulations directly combined with first principles the Curie temperature can be obtained ab initio in good agreement with experimental values. The large scale constrained first principles calculations have been used to construct effective potentials for both the atomic and magnetic degrees of freedom that allow the unified study of influence of phonon-magnon coupling on the thermodynamics and dynamics of magnetic systems. The MC calculations predict the specific heat of iron in near perfect agreement with experimental results from 300K to above Tc and allow the identification of the importance of the magnon-phonon interaction at the phase-transition. Further Molecular Dynamics and Spin Dynamics calculations elucidate the dynamics of this coupling and open the potential for quantitative and predictive descriptions of dynamic structure factors in magnetic materials using first principles derived simulations. C1 [Eisenbach, Markus] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. [Perera, Dilina; Landau, David P.] Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA. [Nicholson, Don M.] Univ N Carolina, Dept Phys, Asheville, NC 28804 USA. [Yin, Jungqi] Univ Tennessee, Natl Inst Computat Sci, Oak Ridge, TN 37831 USA. [Browns, Gregory] Florida State Univ, Dept Phys, Tallahassee, FL 32306 USA. RP Eisenbach, M (reprint author), Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. EM eisenbachm@ornl.gov OI Eisenbach, Markus/0000-0001-8805-8327 NR 32 TC 1 Z9 1 U1 1 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 640 AR 012019 DI 10.1088/1742-6596/640/1/012019 PG 12 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA BE8IB UT WOS:000376508100019 ER PT S AU Pattanasiri, B Li, YW Wust, T Landau, DP AF Pattanasiri, Busara Li, Ying Wai Wust, Thomas Landau, David P. GP IOP TI Effect of surface attractive strength on structural transitions of a confined HP lattice protein SO XXVI IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (CCP2014) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 26th IUPAP Conference on Computational Physics (CCP) CY AUG 11-14, 2014 CL Boston Univ, George Sherman Union, Boston, MA SP IUPAP, APS, Boston Coll, Clark Univ, Harvard Univ, Inst Appl Computat Sci, NE Univ, Univ Massachusetts Amherst, Univ Massachusetts Boston, Intel Corp, Cambridge Univ Press, Elsevier, Inst Phys Publishing, Amer Inst Phys Publishing HO Boston Univ, George Sherman Union ID DENSITY-OF-STATES; RANDOM-WALK; SIMULATIONS; MODEL AB We investigate the influence of surface attractive strength on structural transitions of a hydrophobic-polar (HP) lattice protein confined in a slit formed by two parallel, attractive walls. We apply Wang-Landau sampling together with efficient Monte Carlo updates to estimate the density of states of the system. The conformational transitions, namely, the debridging process and hydrophobic core formation, can be identified by analyzing the specific heat together with several structural observables, such as the numbers of surface contacts, the number of hydrophobic pairs, and radii of gyration in different directions. As temperature decreases, we find that the occurrence of the debridging process is conditional depending on the surface attractive strength. This, in turn, affects the nature of the hydrophobic core formation that takes place at a lower temperature. We illustrate these observations with the aid of a HP protein chain with 48 monomers. C1 [Pattanasiri, Busara; Landau, David P.] Univ Georgia, Dept Phys & Astron, Ctr Simulat Phys, Athens, GA 30602 USA. [Li, Ying Wai] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. [Wust, Thomas] ETH, Sci IT Serv, IT Serv, CH-8092 Zurich, Switzerland. RP Pattanasiri, B (reprint author), Univ Georgia, Dept Phys & Astron, Ctr Simulat Phys, Athens, GA 30602 USA. EM busara@physast.uga.edu NR 33 TC 1 Z9 1 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 640 AR 012015 DI 10.1088/1742-6596/640/1/012015 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA BE8IB UT WOS:000376508100015 ER PT S AU Shi, G Wust, T Li, YW Landau, DP AF Shi, G. Wust, T. Li, Y. W. Landau, D. P. GP IOP TI Protein folding of the H0P model: A parallel Wang-Landau study SO XXVI IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (CCP2014) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 26th IUPAP Conference on Computational Physics (CCP) CY AUG 11-14, 2014 CL Boston Univ, George Sherman Union, Boston, MA SP IUPAP, APS, Boston Coll, Clark Univ, Harvard Univ, Inst Appl Computat Sci, NE Univ, Univ Massachusetts Amherst, Univ Massachusetts Boston, Intel Corp, Cambridge Univ Press, Elsevier, Inst Phys Publishing, Amer Inst Phys Publishing HO Boston Univ, George Sherman Union ID MONTE-CARLO-SIMULATION; LATTICE HETEROPOLYMERS; GENETIC ALGORITHMS; HP MODEL; THERMODYNAMICS; STABILITY; CRAMBIN; STATES AB We propose a simple modification to the hydrophobic-polar (HP) protein model, by introducing a new type of monomer, "0", with intermediate hydrophobicity of some amino acids between H and P. With the replica-exchange Wang-Landau sampling method, we investigate some widely studied HP sequences as well as their H0P counterparts and observe that the H0P sequences exhibit dramatically reduced ground state degeneracy and more significant transition signals at low temperature for some thermodynamic properties, such as the specific heat. C1 [Shi, G.; Landau, D. P.] Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA. [Wust, T.] ETH, IT Serv, Sci IT Serv, CH-8092 Zurich, Switzerland. [Li, Y. W.] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. RP Shi, G (reprint author), Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA. EM sgjerry@physast.uga.edu NR 45 TC 3 Z9 3 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 640 AR 012017 DI 10.1088/1742-6596/640/1/012017 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA BE8IB UT WOS:000376508100017 ER PT S AU Syritsyn, S AF Syritsyn, Sergey GP IOP TI Nucleon Structure on a Lattice at the Physical Point SO XXVI IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (CCP2014) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 26th IUPAP Conference on Computational Physics (CCP) CY AUG 11-14, 2014 CL Boston Univ, George Sherman Union, Boston, MA SP IUPAP, APS, Boston Coll, Clark Univ, Harvard Univ, Inst Appl Computat Sci, NE Univ, Univ Massachusetts Amherst, Univ Massachusetts Boston, Intel Corp, Cambridge Univ Press, Elsevier, Inst Phys Publishing, Amer Inst Phys Publishing HO Boston Univ, George Sherman Union AB We report initial nucleon structure results computed on lattices with 2+1 dynamical Mobius domain wall fermions at the physical point generated by the RBC and UKQCD collaborations. At this stage, we evaluate only connected quark contributions. In particular, we discuss the nucleon vector and axial-vector form factors, nucleon axial charge and the isovector quark momentum fraction. From currently available statistics, we estimate the stochastic accuracy of the determination of g(A) and < x >(u-d) to be around 10%, and we expect to reduce that to 5% within the next year. To reduce the computational cost of our calculations, we extensively use acceleration techniques such as low-eigenmode deflation and all-mode-averaging (AMA). We present a method for choosing optimal AMA parameters. C1 [Syritsyn, Sergey] Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. RP Syritsyn, S (reprint author), Brookhaven Natl Lab, RIKEN BNL Res Ctr, Upton, NY 11973 USA. EM ssyritsyn@quark.phy.bnl.gov NR 17 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 640 AR 012054 DI 10.1088/1742-6596/640/1/012054 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA BE8IB UT WOS:000376508100054 ER PT S AU Valentim, A Rocha, JCS Tsai, SH Lis, YW Eisenbach, M Fiore, CE Landau, DP AF Valentim, Alexandra Rocha, Julio C. S. Tsai, Shan-Ho Lis, Ying Wai Eisenbach, Markus Fiore, Carlos E. Landau, David P. GP IOP TI Exploring Replica-Exchange Wang-Landau sampling in higher-dimensional parameter space SO XXVI IUPAP CONFERENCE ON COMPUTATIONAL PHYSICS (CCP2014) SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 26th IUPAP Conference on Computational Physics (CCP) CY AUG 11-14, 2014 CL Boston Univ, George Sherman Union, Boston, MA SP IUPAP, APS, Boston Coll, Clark Univ, Harvard Univ, Inst Appl Computat Sci, NE Univ, Univ Massachusetts Amherst, Univ Massachusetts Boston, Intel Corp, Cambridge Univ Press, Elsevier, Inst Phys Publishing, Amer Inst Phys Publishing HO Boston Univ, George Sherman Union ID ISING-MODEL; ALGORITHM AB We considered a higher-dimensional extension for the replica-exchange Wang-Landau algorithm to perform a random walk in the energy and magnetization space of the two-dimensional Ising model. This hybrid scheme combines the advantages of Wang-Landau and Replica-Exchange algorithms, and the one-dimensional version of this approach has been shown to be very efficient and to scale well, up to several thousands of computing cores. This approach allows us to split the parameter space of the system to be simulated into several pieces and still perform a random walk over the entire parameter range, ensuring the ergodicity of the simulation. Previous work, in which a similar scheme of parallel simulation was implemented without using replica exchange and with a different way to combine the result from the pieces, led to discontinuities in the final density of states over the entire range of parameters. From our simulations, it appears that the replica-exchange Wang-Landau algorithm is able to overcome this difficulty, allowing exploration of higher parameter phase space by keeping track of the joint density of states. C1 [Valentim, Alexandra; Rocha, Julio C. S.; Tsai, Shan-Ho; Landau, David P.] Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA. [Valentim, Alexandra; Fiore, Carlos E.] Univ Fed Parana, Dept Fis, BR-81531980 Curitiba, Parana, Brazil. [Rocha, Julio C. S.] Univ Fed Minas Gerais, Dept Fis, BR-31270901 Belo Horizonte, MG, Brazil. [Tsai, Shan-Ho] Univ Georgia, Enterprise Informat Technol Serv, Athens, GA 30602 USA. [Lis, Ying Wai; Eisenbach, Markus] Oak Ridge Natl Lab, Natl Ctr Computat Sci, Oak Ridge, TN 37831 USA. [Fiore, Carlos E.] Univ Sao Paulo, Inst Fis, BR-05315970 Sao Paulo, SP, Brazil. RP Valentim, A (reprint author), Univ Georgia, Ctr Simulat Phys, Athens, GA 30602 USA. EM alexandra@fisica.ufpr.br OI Eisenbach, Markus/0000-0001-8805-8327 NR 12 TC 4 Z9 4 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 640 AR 012006 DI 10.1088/1742-6596/640/1/012006 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA BE8IB UT WOS:000376508100006 ER PT J AU Zhang, J Park, G Shihab, MM Donofrio, D Shalf, J Jung, M AF Zhang, Jie Park, Gieseo Shihab, Mustafa M. Donofrio, David Shalf, John Jung, Myoungsoo GP IEEE TI OpenNVM: An Open-Sourced FPGA-based NVM Controller for Low Level Memory Characterization SO 2015 33RD IEEE INTERNATIONAL CONFERENCE ON COMPUTER DESIGN (ICCD) LA English DT Proceedings Paper CT 33rd IEEE International Conference on Computer Design (ICCD) CY OCT 18-21, 2015 CL New York, NY SP IEEE, IEEE Comp Soc, IEEE Circuits & Syst Soc AB Accurate characterization of real device samples is essential for understanding the true potential of the emerging non-volatile memories (NVMs) and identifying their optimal placement in the memory hierarchy. Even though, NVM devices are now available from different manufacturers, lack of an appropriate NVM controller and evaluation platform in the public domain is the main challenge in extracting empirical data from these real devices. In this paper, we present Open-NVM, an open-sourced, highly configurable FPGA based evaluation/characterization platform for various NVM technologies. Through our OpenNVM, this work reveals important low-level NVM characteristics, including i) static and dynamic latency disparity, ii) error rate variation, iii) power consumption behavior, vi) interrelationship between frequency and NVM operational current. In addition, we also examine state-of-the-art write-once-memory (WOM) codes on a real NVM device and study diverse system-level performance impacts based on our findings. All FPGA source code and detailed information of our hardware design is ready to be open-sourced and downloaded for free. C1 [Zhang, Jie; Jung, Myoungsoo] Yonsei Univ, Sch Integrated Technol, Seoul 120749, South Korea. [Park, Gieseo; Shihab, Mustafa M.] Univ Texas Dallas, Dept EE, Richardson, TX 75083 USA. [Donofrio, David; Shalf, John] Lawrence Berkeley Natl Lab, Comp Architecture Lab, Berkeley, CA USA. RP Jung, M (reprint author), Yonsei Univ, Sch Integrated Technol, Seoul 120749, South Korea. EM jie@yonsei.ac.kr; gieseo.park@utdallas.edu; mustafa.shihab@utdallas.edu; ddonofrio@lbl.gov; jshalf@lbl.gov; m.jung@yonsei.ac.kr NR 21 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7166-7 PY 2015 BP 666 EP 673 PG 8 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BE3FL UT WOS:000370645200103 ER PT S AU Ribas, EF Armengaud, E Avignone, FT Betz, M Brax, P Brun, P Cantatore, G Carmona, JM Carosi, GP Caspers, F Caspi, S Cetin, SA Chelouchem, D Christensen, FE Dael, A Dafni, T Davenport, M Derbin, AV Desch, K Diago, A Dobrich, B Dratchnev, I Dudarev, A Eleftheriadis, C Fanourakis, G Galan, J Garcia, JA Garza, JG Geralis, T Gimeno, B Giomatarisl, I Gninenko, S Gomez, H Gonzalez-Diaz, D Guendelman, E Hailey, CJ Hiramatsu, T Hoffmann, DHH Horns, D Iguaz, FJ Irastorza, IG Isern, J Imai, K Jaeckel, J Jakobsen, AC Jakovcic, K Kaminski, J Kawasaki, M Karuza, M Krcmar, M Kousouris, K Krieger, C Lakic, B Limousin, O Lindner, A Liolios, A Luzon, G Matsuki, S Muratova, VN Nones, C Ortega, I Papaevangelou, T Pivovaroff, MJ Raffelt, G Redondo, J Ringwald, A Russenschuck, S Ruz, J Saikawa, K Savvidis, I Sekiguchi, T Semertzidis, YK Shilon, I Sikivie, P Silva, H ten Kate, HHJ Tomas, A Troitsky, S Vafeiadis, T van Bibber, K Vedrine, P Villar, JA Vogel, JK Walckiers, L Weltman, A Wester, W Yildiz, SC Zioutas, K AF Ribas, E. Ferrer Armengaud, E. Avignone, F. T. Betz, M. Brax, P. Brun, P. Cantatore, G. Carmona, J. M. Carosi, G. P. Caspers, F. Caspi, S. Cetin, S. A. Chelouchem, D. Christensen, F. E. Dael, A. Dafni, T. Davenport, M. Derbin, A. V. Desch, K. Diago, A. Doebrich, B. Dratchnev, I. Dudarev, A. Eleftheriadis, C. Fanourakis, G. Galan, J. Garcia, J. A. Garza, J. G. Geralis, T. Gimeno, B. Giomatarisl, I. Gninenko, S. Gomez, H. Gonzalez-Diaz, D. Guendelman, E. Hailey, C. J. Hiramatsu, T. Hoffmann, D. H. H. Horns, D. Iguaz, F. J. Irastorza, I. G. Isern, J. Imai, K. Jaeckel, J. Jakobsen, A. C. Jakovcic, K. Kaminski, J. Kawasaki, M. Karuza, M. Krcmar, M. Kousouris, K. Krieger, C. Lakic, B. Limousin, O. Lindner, A. Liolios, A. Luzon, G. Matsuki, S. Muratova, V. N. Nones, C. Ortega, I. Papaevangelou, T. Pivovaroff, M. J. Raffelt, G. Redondo, J. Ringwald, A. Russenschuck, S. Ruz, J. Saikawa, K. Savvidis, I. Sekiguchi, T. Semertzidis, Y. K. Shilon, I. Sikivie, P. Silva, H. ten Kate, H. H. J. Tomas, A. Troitsky, S. Vafeiadis, T. van Bibber, K. Vedrine, P. Villar, J. A. Vogel, J. K. Walckiers, L. Weltman, A. Wester, W. Yildiz, S. C. Zioutas, K. GP IOP TI The IAXO Helioscope SO 7TH INTERNATIONAL SYMPOSIUM ON LARGE TPCS FOR LOW-ENERGY RARE EVENT DETECTION SE Journal of Physics Conference Series LA English DT Proceedings Paper CT 7th International Symposium on Large TPCs for Low-Energy Rare Event Detection CY DEC 15-17, 2014 CL Paris Diderot Univ, Inst Astroparticle Phys Campus, Paris, FRANCE HO Paris Diderot Univ, Inst Astroparticle Phys Campus ID AXION AB The IAXO (International Axion Experiment) is a fourth generation helioscope with a sensitivity, in terms of detectable signal counts, at least 104 better than CAST phase-I, resulting in sensitivity on g, one order of magnitude better. To achieve this performance TAXO will count on a 8-coil toroidal magnet with 60 cm diameter bores and equipped with X-ray focusing optics into 0.20 cm(2) spots coupled to ultra-low background Micromegas X-ray detectors. The magnet will be on a platform that will allow solar tracking for 12 hours per day. The next short term objectives are to prepare a Technical Design Report and to construct the first prototypes of the hardware main ingredients: demonstration coil, X-ray optics and low background detector while refining the physics case and studying the feasibility studies for Dark Matter axions. C1 [Ribas, E. Ferrer; Armengaud, E.; Brun, P.; Dael, A.; Giomatarisl, I.; Limousin, O.; Nones, C.; Papaevangelou, T.; Vedrine, P.] CEA, Irfu, Ctr Saclay, Gif Sur Yvette, France. [Avignone, F. T.] Univ S Carolina, Dept Phys, Columbia, SC 29208 USA. [Betz, M.; Caspers, F.; Davenport, M.; Dudarev, A.; Kousouris, K.; Russenschuck, S.; Shilon, I.; Silva, H.; ten Kate, H. H. J.; Vafeiadis, T.; Walckiers, L.; Zioutas, K.] CERN, Geneva, Switzerland. [Brax, P.] CEA, IPHT, Ctr Saclay, Gif Sur Yvette, France. [Cantatore, G.] Ist Nazl Fis Nucl, Sez Trieste, Trieste, Italy. [Cantatore, G.] Univ Trieste, I-34127 Trieste, Italy. [Carmona, J. M.; Dafni, T.; Diago, A.; Galan, J.; Garcia, J. A.; Garza, J. G.; Gomez, H.; Gonzalez-Diaz, D.; Iguaz, F. J.; Irastorza, I. G.; Luzon, G.; Ortega, I.; Redondo, J.; Shilon, I.; Tomas, A.; Villar, J. A.] Univ Zaragoza, Lab Fis Nucl & Altas Energias, Zaragoza, Spain. [Carosi, G. P.; Pivovaroff, M. J.; Ruz, J.; Vogel, J. K.] LLNL, Phys & Life Sci Directorate, Livermore, CA USA. [Caspi, S.] LBNL, Berkeley, CA USA. [Cetin, S. A.; Yildiz, S. C.] Dogus Univ, Istanbul, Turkey. [Chelouchem, D.] Univ Haifa, Dept Phys, IL-31905 Haifa, Israel. [Christensen, F. E.; Jakobsen, A. C.] Tech Univ Denmark, DTU Space, Copenhagen, Denmark. [Derbin, A. V.; Dratchnev, I.; Muratova, V. N.] St Petersburg Nucl Phys Inst, St Petersburg, Russia. [Desch, K.; Kaminski, J.; Krieger, C.] Univ Bonn, Inst Phys, Bonn, Germany. [Doebrich, B.; Lindner, A.; Ringwald, A.] DESY, Hamburg, Germany. [Eleftheriadis, C.; Liolios, A.; Savvidis, I.] Aristotle Univ Thessaloniki, GR-54006 Thessaloniki, Greece. [Fanourakis, G.; Geralis, T.] NCSR Demokritos, Athens, Greece. [Gimeno, B.] Univ Valencia, Inst Ciencias Mat, Valencia, Spain. [Gninenko, S.; Troitsky, S.] Russian Acad Sci, INR, Moscow, Russia. [Guendelman, E.] Ben Gurion Univ Negev, Dept Phys, IL-84105 Beer Sheva, Israel. [Hailey, C. J.] Columbia Univ, Astrophys Lab, New York, NY 10027 USA. [Hiramatsu, T.] Kyoto Univ, Yukawa Inst Theoret Phys, Kyoto 606, Japan. [Hoffmann, D. H. H.] Tech Univ Darmstadt, IKP, Darmstadt, Germany. [Horns, D.] Univ Hamburg, Inst Expt Phys, Hamburg, Germany. [Isern, J.] Inst Ciencies Espai CSIC IEEC, Fac Ciencies, Bellaterra, Spain. [Imai, K.] Japan Atom Energy Agcy, Adv Sci Res Ctr, Tokai, Ibaraki, Japan. [Jaeckel, J.] Heidelberg Univ, Inst Theoret Phys, D-69120 Heidelberg, Germany. [Jakovcic, K.; Krcmar, M.; Lakic, B.] Rudjer Boskovic Inst, Zagreb, Croatia. [Kawasaki, M.; Sekiguchi, T.] Univ Tokyo, Inst Cosm Ray Res, Tokyo, Japan. [Karuza, M.] Univ Rijeka, Dept Phys, Rijeka, Croatia. [Karuza, M.] Univ Rijeka, Ctr Micro & Nano Sci & Technol, Rijeka, Croatia. [Matsuki, S.; Saikawa, K.] Kyoto Univ, Res Ctr Low Temp & Mat Sci, Kyoto 6068502, Japan. [Raffelt, G.] Max Planck Inst Phys & Astrophys, D-80805 Munich, Germany. Tokyo Inst Technol, Dept Phys, Tokyo 152, Japan. [Semertzidis, Y. K.] Korea Adv Inst Sci & Technol, IBS, Ctr Axion & Precis Phys, Daejeon, South Korea. [Sikivie, P.] Univ Florida, Dept Phys, Gainesville, FL 32611 USA. [van Bibber, K.] Univ Calif Berkeley, Dept Nucl Engn, Berkeley, CA 94720 USA. [Weltman, A.] Univ Cape Town, ZA-7700 Rondebosch, South Africa. [Wester, W.] Fermilab Natl Accelerator Lab, Batavia, IL 60510 USA. [Zioutas, K.] Univ Patras, Dept Phys, GR-26110 Patras, Greece. RP Ribas, EF (reprint author), CEA, Irfu, Ctr Saclay, Gif Sur Yvette, France. EM esther.ferrer-ribas@cea.fr RI Papaevangelou, Thomas/G-2482-2016; Irastorza, Igor/B-2085-2012; Galan, Javier/F-7986-2016; Gracia Garza, Javier/F-5713-2016; Villar, Jose Angel/K-6630-2014; Dafni, Theopisti/J-9646-2012; OI Papaevangelou, Thomas/0000-0003-2829-9158; Irastorza, Igor/0000-0003-1163-1687; Galan, Javier/0000-0001-7529-9834; Gracia Garza, Javier/0000-0003-0800-1588; Villar, Jose Angel/0000-0003-0228-7589; Dafni, Theopisti/0000-0002-8921-910X; Clemen Jakobsen, Anders/0000-0002-0206-4855 NR 19 TC 0 Z9 0 U1 2 U2 3 PU IOP PUBLISHING LTD PI BRISTOL PA DIRAC HOUSE, TEMPLE BACK, BRISTOL BS1 6BE, ENGLAND SN 1742-6588 J9 J PHYS CONF SER PY 2015 VL 650 AR UNSP 012009 DI 10.1088/1742-6596/650/1/012009 PG 8 WC Physics, Particles & Fields SC Physics GA BE1MS UT WOS:000368140400009 ER PT S AU Antipov, S Wang, D Fedurin, M AF Antipov, Sergey Wang, Dan Fedurin, Mikhail GP IEEE TI Selective Mode Excitation in a Multimode THz Slow-Wave Structure by a Relativistic Bunch Train SO 2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) SE International Conference on Infrared Millimeter and Terahertz Waves LA English DT Proceedings Paper CT 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) CY AUG 23-28, 2015 CL Chinese Univ Hong Kong, Hong Kong, PEOPLES R CHINA SP IEEE, IEEE Microwave Theory & Tech Soc, Virginal Diodes Inc, TeraView, Microtech Instruments Inc, Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Croucher Fdn, Capital Normal Univ, K C Wong Educ Fdn, Meetings & Exhibit Hong Kong, Army Res Off, NSF HO Chinese Univ Hong Kong AB A number of methods for producing sub-picosecond beam microbunching have been developed in recent years. A train of these bunches is capable of generating THz radiation via multiple mechanisms like transition, Cherenkov and undulator radiation. We utilize a bunch train with tunable spacing to selectively excite high order TM0n -like modes in a multimode structure. In this paper we present experimental results obtained at the Accelerator Test Facility of Brookhaven National Laboratory. C1 [Antipov, Sergey] Euclid Techlabs LLC, Solon, OH 44139 USA. [Wang, Dan] Tsinghua Univ, Beijing 100084, Peoples R China. [Antipov, Sergey; Wang, Dan] Argonne Natl Lab, Argonne, IL 60439 USA. [Fedurin, Mikhail] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Antipov, S (reprint author), Euclid Techlabs LLC, Solon, OH 44139 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2162-2027 BN 978-1-4799-8272-1 J9 INT CONF INFRA MILLI PY 2015 PG 2 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BE8OY UT WOS:000376674000491 ER PT S AU Balci, S Kim, JH Czaplewski, DA Jung, IW Hatami, F Kung, P Kim, SM AF Balci, Soner Kim, Ju-Hyung Czaplewski, David A. Jung, Il Woong Hatami, Fariba Kung, Patrick Kim, Seongsin M. GP IEEE TI THz Emission from InP and InGaAs Nanowires Fabricated Using Electron Beam Lithography SO 2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) SE International Conference on Infrared Millimeter and Terahertz Waves LA English DT Proceedings Paper CT 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) CY AUG 23-28, 2015 CL Chinese Univ Hong Kong, Hong Kong, PEOPLES R CHINA SP IEEE, IEEE Microwave Theory & Tech Soc, Virginal Diodes Inc, TeraView, Microtech Instruments Inc, Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Croucher Fdn, Capital Normal Univ, K C Wong Educ Fdn, Meetings & Exhibit Hong Kong, Army Res Off, NSF HO Chinese Univ Hong Kong AB THz emission from semiconductor nanowires has been an emerging trend since nanowires exhibit an increase in optical absorption by having a much larger effective surface area than films. The efficient THz emission is related to strong local field enhancement by coherent surface plasmons. In this work, we investigated THz generation from nanowires fabricated through a process that utilizes e-beam lithography and plasma etching, giving us full control of structural geometry such as the diameter, length, excellent-vertical alignment, and perfectly-uniform distribution. C1 [Balci, Soner; Kim, Ju-Hyung; Kung, Patrick; Kim, Seongsin M.] Univ Alabama, Elect & Comp Engn Dept, Tuscaloosa, AL 35487 USA. [Czaplewski, David A.; Jung, Il Woong] Argonne Natl Lab, Ctr Nanoscale Mat, Lemont, IL 60439 USA. [Hatami, Fariba] Humboldt Univ, Dept Phys, D-12489 Berlin, Germany. RP Balci, S (reprint author), Univ Alabama, Elect & Comp Engn Dept, Tuscaloosa, AL 35487 USA. NR 4 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2162-2027 BN 978-1-4799-8272-1 J9 INT CONF INFRA MILLI PY 2015 PG 2 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BE8OY UT WOS:000376674000138 ER PT S AU Chen, HT Huang, L Azad, A Taylor, T AF Chen, Hou-Tong Huang, Li Azad, Abul Taylor, Toni GP IEEE TI Terahertz Metasurfaces for Antireflection Coatings SO 2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) SE International Conference on Infrared Millimeter and Terahertz Waves LA English DT Proceedings Paper CT 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) CY AUG 23-28, 2015 CL Chinese Univ Hong Kong, Hong Kong, PEOPLES R CHINA SP IEEE, IEEE Microwave Theory & Tech Soc, Virginal Diodes Inc, TeraView, Microtech Instruments Inc, Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Croucher Fdn, Capital Normal Univ, K C Wong Educ Fdn, Meetings & Exhibit Hong Kong, Army Res Off, NSF HO Chinese Univ Hong Kong AB We demonstrate a new strategy of ultrathin terahertz antireflection coatings employing metasurfaces. The antireflection performance is determined by the metasurface structure design rather than the properties of materials being used, and it is scalable to operate at any relevant wavelengths and substrates of arbitrary refractive index. C1 [Chen, Hou-Tong; Azad, Abul; Taylor, Toni] Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. [Huang, Li] Harbin Inst Technol, Dept Phys, Harbin, Peoples R China. RP Chen, HT (reprint author), Los Alamos Natl Lab, Ctr Integrated Nanotechnol, Los Alamos, NM 87545 USA. EM chenht@lanl.gov NR 4 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2162-2027 BN 978-1-4799-8272-1 J9 INT CONF INFRA MILLI PY 2015 PG 1 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BE8OY UT WOS:000376674000460 ER PT S AU Wang, D Antipov, S Conde, M Doran, S Gai, W Jing, C Liu, W Power, J Qiu, J Tang, C Wisniewski, E AF Wang, D. Antipov, S. Conde, M. Doran, S. Gai, W. Jing, C. Liu, W. Power, J. Qiu, J. Tang, C. Wisniewski, E. GP IEEE TI High Power RF Radiation at W-band based on Wakefield Excited by Intense Electron Beam SO 2015 40TH INTERNATIONAL CONFERENCE ON INFRARED, MILLIMETER AND TERAHERTZ WAVES (IRMMW-THZ) SE International Conference on Infrared Millimeter and Terahertz Waves LA English DT Proceedings Paper CT 40th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz) CY AUG 23-28, 2015 CL Chinese Univ Hong Kong, Hong Kong, PEOPLES R CHINA SP IEEE, IEEE Microwave Theory & Tech Soc, Virginal Diodes Inc, TeraView, Microtech Instruments Inc, Hong Kong Univ Sci & Technol, Dept Elect & Comp Engn, Croucher Fdn, Capital Normal Univ, K C Wong Educ Fdn, Meetings & Exhibit Hong Kong, Army Res Off, NSF HO Chinese Univ Hong Kong AB We report the experimental design and initial experimental results on high power RF generation at W-band based on coherent wakefield from the metallic periodic structure of 91 GHz, excited by intense electron beam at the Argonne Wakefield Accelerator (AWA) facility. The recently output RF power is 0.7 MW, with 67 MeV, 1.4 nano-column (nC) single electron beam go through the 12cm structure. The RF pulse is 3.4 nano-second (ns). We measure the energy loss of electron beam in the experiment. Next run is to increase the output RF power with higher charge in the driven beam and to excite higher gradient of wakefield with electron bunch train. C1 [Wang, D.; Antipov, S.; Conde, M.; Doran, S.; Gai, W.; Jing, C.; Liu, W.; Power, J.; Qiu, J.; Wisniewski, E.] Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. [Wang, D.; Tang, C.] Tsinghua Univ, Beijing 100084, Peoples R China. [Antipov, S.; Jing, C.; Qiu, J.] Euclid Tech Labs LLC, Argonne, IL 60439 USA. RP Wang, D (reprint author), Argonne Natl Lab, 9700 S Cass Ave, Argonne, IL 60439 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2162-2027 BN 978-1-4799-8272-1 J9 INT CONF INFRA MILLI PY 2015 PG 2 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BE8OY UT WOS:000376674000038 ER PT S AU Rios-Torres, J Malikopoulos, AA Pisu, P AF Rios-Torres, Jackeline Malikopoulos, Andreas A. Pisu, Pierluigi GP IEEE TI Online Optimal Control of Connected Vehicles for Efficient Traffic Flow at Merging Roads SO 2015 IEEE 18TH INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION SYSTEMS SE IEEE International Conference on Intelligent Transportation Systems-ITSC LA English DT Proceedings Paper CT 18th IEEE International Conference on Intelligent Transportation Systems CY SEP 15-18, 2015 CL SPAIN SP IEEE, Int Transportat Syst Soc, CVCEI, Univ Las Palmas Gran Canaria, Ayuntamentiao Las Palmas Gran Canaria, LPA, IEEE Comp Soc, Univ Las Palmas Gran Canaria, Inst Univ Ciencias Tecnologias Ciberneticas ID MANAGEMENT AB This paper addresses the problem of coordinating online connected vehicles at merging roads to achieve a smooth traffic flow without stop-and-go driving. We present a framework and a closed-form solution that optimize the acceleration profile of each vehicle in terms of fuel economy while avoiding collision with other vehicles at the merging zone. The proposed solution is validated through simulation and it is shown that coordination of connected vehicles can reduce significantly fuel consumption and travel time at merging roads. C1 [Rios-Torres, Jackeline; Malikopoulos, Andreas A.] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN USA. [Pisu, Pierluigi] Clemson Univ, Int Ctr Automot Res, Greenville, SC USA. RP Rios-Torres, J (reprint author), Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN USA. EM andreas@ornl.gov RI Pisu, Pierluigi/Q-5963-2016 OI Pisu, Pierluigi/0000-0003-4266-1336 NR 25 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-0009 BN 978-1-4673-6596-3 J9 IEEE INT C INTELL TR PY 2015 BP 2432 EP 2437 DI 10.1109/ITSC.2015.392 PG 6 WC Transportation Science & Technology SC Transportation GA BE8OT UT WOS:000376668802082 ER PT S AU Malikopoulos, AA AF Malikopoulos, Andreas A. GP IEEE TI Pareto Efficient Policy for Supervisory Power Management Control SO 2015 IEEE 18TH INTERNATIONAL CONFERENCE ON INTELLIGENT TRANSPORTATION SYSTEMS SE IEEE International Conference on Intelligent Transportation Systems-ITSC LA English DT Proceedings Paper CT 18th IEEE International Conference on Intelligent Transportation Systems CY SEP 15-18, 2015 CL SPAIN SP IEEE, Int Transportat Syst Soc, CVCEI, Univ Las Palmas Gran Canaria, Ayuntamentiao Las Palmas Gran Canaria, LPA, IEEE Comp Soc, Univ Las Palmas Gran Canaria, Inst Univ Ciencias Tecnologias Ciberneticas ID HYBRID ELECTRIC VEHICLES; AVERAGE COST; STRATEGY; ALGORITHMS AB In this paper we address the problem of online optimization of the supervisory power management control in parallel hybrid electric vehicles (HEVs). We model HEV operation as a controlled Markov chain using the long-run expected average cost per unit time criterion, and we show that the control policy yielding the Pareto optimal solution minimizes the average cost criterion online. The effectiveness of the proposed solution is validated through simulation and compared to the solution derived with dynamic programming using the average cost criterion. C1 [Malikopoulos, Andreas A.] Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN USA. RP Malikopoulos, AA (reprint author), Oak Ridge Natl Lab, Energy & Transportat Sci Div, Oak Ridge, TN USA. EM andreas@ornl.gov NR 24 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-0009 BN 978-1-4673-6596-3 J9 IEEE INT C INTELL TR PY 2015 BP 2843 EP 2848 DI 10.1109/ITSC.2015.457 PG 6 WC Transportation Science & Technology SC Transportation GA BE8OT UT WOS:000376668802147 ER PT J AU Papenhausen, E Wang, B Langston, MH Baskaran, M Henretty, T Izubuchi, T Johnson, A Jung, C Lin, MF Meister, B Mueller, K Lethin, R AF Papenhausen, Eric Wang, Bing Langston, M. Harper Baskaran, Muthu Henretty, Tom Izubuchi, Taku Johnson, Ann Jung, Chulwoo Lin, Meifeng Meister, Benoit Mueller, Klaus Lethin, Richard BE Dollner, J Beck, F Bergel, A TI Polyhedral User Mapping and Assistant Visualizer Tool for the R-Stream Auto-Parallelizing Compiler SO 2015 IEEE 3RD WORKING CONFERENCE ON SOFTWARE VISUALIZATION (VISSOFT) LA English DT Proceedings Paper CT 3rd IEEE Working Conference on Software Visualization (VISSOFT) CY SEP 27-28, 2015 CL Bremen, GERMANY SP IEEE, IEEE Comp Soc TCSE AB Existing high-level, source-to-source compilers can accept input programs in a high-level language (e.g., C) and perform complex automatic parallelization and other mappings using various optimizations. These optimizations often require trade-offs and can benefit from the user's involvement in the process. However, because of the inherent complexity, the barrier to entry for new users of these high-level optimizing compilers can often be high. We propose visualization as an effective gateway for non-expert users to gain insight into the effects of parameter choices and so aid them in the selection of levels best suited to their specific optimization goals. A popular optimization paradigm is polyhedral mapping which achieves optimization by loop transformations. We have augmented a commercial polyhedral-model source-to-source compiler (R-Stream) with an interactive visual tool we call the Polyhedral User Mapping and Assistant Visualizer (PUMA-V). PUMA-V is tightly integrated with the R-Stream source-to-source compiler and allows users to explore the effects of difficult mappings and express their goals to optimize trade-offs. It implements advanced multivariate visualization paradigms such as parallel coordinates and correlation graphs and applies them in the novel setting of compiler optimizations. We believe that our tool allows programmers to better understand complex program transformations and deviations of mapping properties on well understood programs. This in turn will achieve experience and performance portability across programs architectures as well as expose new communities in the computational sciences to the rich features of auto-parallelizing high-level source-to-source compilers. C1 [Papenhausen, Eric; Wang, Bing; Mueller, Klaus] SUNY Stony Brook, Stony Brook, NY 11794 USA. [Langston, M. Harper; Baskaran, Muthu; Henretty, Tom; Johnson, Ann; Meister, Benoit; Lethin, Richard] Reservoir Labs Inc, New York, NY USA. [Izubuchi, Taku; Jung, Chulwoo; Lin, Meifeng] Brookhaven Natl Lab, Upton, NY 11973 USA. RP Papenhausen, E (reprint author), SUNY Stony Brook, Stony Brook, NY 11794 USA. EM epapenhausen@cs.stonybrook.edu; wang12@cs.stonybrook.edu; langston@reservoir.com; baskaran@reservoir.com; henretty@reservoir.com; izubuchi@bnl.gov; johnson@reservoir.com; chulwoo@bnl.gov; mlin@bnl.gov; meister@reservoir.com; mueller@cs.stonybrook.edu; lethin@reservoir.com NR 13 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4673-7526-9 PY 2015 BP 180 EP 184 PG 5 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BE9BZ UT WOS:000377255000025 ER PT S AU Wyers, EJ Harris, TR Pitts, WS Massad, JE Franzon, PD AF Wyers, Eric J. Harris, T. Robert Pitts, W. Shep Massad, Jordan E. Franzon, Paul D. GP IEEE TI Characterization of the Mechanical Stress Impact on Device Electrical Performance in the CMOS and III-V HEMT/HBT Heterogeneous Integration Environment SO 2015 INTERNATIONAL 3D SYSTEMS INTEGRATION CONFERENCE (3DIC 2015) SE IEEE International 3D Systems Integration Conference LA English DT Proceedings Paper CT IEEE International 3D Systems Integration Conference (3DIC) CY AUG 31-SEP 02, 2015 CL Sendai, JAPAN SP IEEE DE backside source via; GaN HEMT; heterogeneous integration; mechanical-stress-induced performance degradation; reliability; through-silicon-carbide via (TSCV) AB The stress impact of the CMOS and III-V heterogeneous integration environment on device electrical performance is being characterized. Measurements from a partial heterogeneous integration fabrication run will be presented to provide insight into how the backside source vias, alternatively referred to as through-silicon-carbide vias (TSCVs), used within the heterogeneous integration environment impacts GaN HEMT device-level DC performance. C1 [Wyers, Eric J.] Tarleton State Univ, Dept Engn & Comp Sci, Stephenville, TX USA. [Harris, T. Robert; Pitts, W. Shep; Franzon, Paul D.] N Carolina State Univ, Dept Elect & Comp Engn, Raleigh, NC 27695 USA. [Massad, Jordan E.] Sandia Natl Labs, Component Sci & Mech Dept, Albuquerque, NM 87185 USA. RP Wyers, EJ (reprint author), Tarleton State Univ, Dept Engn & Comp Sci, Stephenville, TX USA. NR 7 TC 0 Z9 0 U1 1 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2164-0157 BN 978-1-4673-9386-7 J9 IEEE INT 3D SYST PY 2015 PG 4 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BE8WC UT WOS:000377084700049 ER PT J AU Lee, S Park, BH Lim, SH Shankar, M AF Lee, Sangkeun Park, Byung H. Lim, Seung-Hwan Shankar, Mallikarjun GP IEEE TI Table2Graph: A Scalable Graph Construction From Relational Tables using Map-Reduce SO 2015 IEEE FIRST INTERNATIONAL CONFERENCE ON BIG DATA COMPUTING SERVICE AND APPLICATIONS (BIGDATASERVICE 2015) LA English DT Proceedings Paper CT 1st IEEE International Conference on Big Data Computing Service and Applications (BigDataService) CY MAR 30-APR 03, 2015 CL San Francisco, CA SP IEEE, IEEE Comp Soc, San Jose Univ, Beihang Univ, ITC NSTI, Arizona State Univ, Peking Univ, NE Polytechn Univ, Deakin Univ Australia, UOttawa, UTS, Univ Leeds, Taiyuan Univ Technol, Tsinghua Univ AB Identifying correlations and relationships between entities within and across different data sets (or databases) is of great importance in many domains. The data warehouse-based integration, which has been most widely practiced, is found to be inadequate to achieve such a goal. Instead we explored an alternate solution that turns multiple disparate data sources into a single heterogeneous graph model so that matching between entities across different source data would be expedited by examining their linkages in the graph. We found, however, while a graph-based model provides outstanding capabilities for this purposes, construction of one such model from relational source databases were time consuming and primarily left to ad hoc proprietary scripts. This led us to develop a reconfigurable and reusable graph construction tool that is designed to work at scale. In this paper, we introduce Table2Graph, the graph construction tool based on Map-Reduce framework over Hadoop. We also discuss results from applying Table2Graph to integrate disparate healthcare databases. C1 [Lee, Sangkeun; Park, Byung H.; Lim, Seung-Hwan; Shankar, Mallikarjun] Oak Ridge Natl Lab, Oak Ridge, TN USA. RP Lee, S (reprint author), Oak Ridge Natl Lab, Oak Ridge, TN USA. EM lees4@ornl.gov; parkbh@ornl.gov; limsl@ornl.gov; shankarm@ornl.gov OI Shankar, Mallikarjun/0000-0001-5289-7460 NR 24 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA BN 978-1-4799-8128-1 PY 2015 BP 294 EP 301 DI 10.1109/BigDataService.2015.52 PG 8 WC Computer Science, Software Engineering; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BE7CO UT WOS:000375074100036 ER PT S AU Brodsky, SJ Deur, A de Teramond, GF Dosch, HG AF Brodsky, Stanley J. Deur, Alexandre de Teramond, Guy F. Dosch, Hans Guenter BE Dubnicka, S Dubnickova, AZ Bartos, E TI Light-front holography and superconformal quantum mechanics: A new approach to hadron structure and color confinement SO 9TH JOINT INTERNATIONAL HADRON STRUCTURE '15 CONFERENCE SE International Journal of Modern Physics-Conference Series LA English DT Proceedings Paper CT 9th Joint International Hadron Structure CY JUN 29-JUL 03, 2015 CL SLOVAKIA SP Minist Educ, Sci, Res & Sport Slovak Republ, Joint Inst Nucl Res, Slovak Acad Sci, Inst Phys, Natl Res Ctr Kurchatov Inst, Petersburg Nucl Phys Inst, Slovak Acad Sci, Inst Expt Phys, Comenius Univ, P J Safarik Univ, St Petersburg Polytechn Univ, St Petersburg State Univ ID STRONG-COUPLING CONSTANT; EXCLUSIVE PROCESSES; CHROMODYNAMICS; QCD; SCATTERING AB A primary question in hadron physics is how the mass scale for hadrons consisting of light quarks, such as the proton, emerges from the QCD Lagrangian even in the limit of zero quark mass. If one requires the effective action which underlies the QCD Lagrangian to remain conformally invariant and extends the formalism of de Alfaro, Fubini and Furlan to light-front Hamiltonian theory, then a unique, color-confining potential with a mass parameter. emerges. The actual value of the parameter. is not set by the model - only ratios of hadron masses and other hadronic mass scales are predicted. The result is a nonperturbative, relativistic light-front quantum mechanical wave equation, the Light-Front Schrodinger Equation which incorporates color confinement and other essential spectroscopic and dynamical features of hadron physics, including a mass-less pion for zero quark mass and linear Regge trajectories with the identical slope in the radial quantum number n and orbital angular momentum L. The same light-front equations for mesons with spin J also can be derived from the holographic mapping to QCD (3+1) at fixed light-front time from the soft-wall model modification of AdS(5) space with a specific dilaton profile. Light-front holography thus provides a precise relation between the bound-state amplitudes in the fifth dimension of AdS space and the boost-invariant light-front wavefunctions describing the internal structure of hadrons in physical space-time. One can also extend the analysis to baryons using superconformal algebra -2 x 2 supersymmetric representations of the conformal group. The resulting fermionic LF bound-state equations predict striking similarities between the meson and baryon spectra. In fact, the holographic QCD light-front Hamiltonians for the states on the meson and baryon trajectories are identical if one shifts the internal angular momenta of the meson (L-M) and baryon (L-B) by one unit: L-M = L-B + 1. We also show how the mass scale kappa underlying confinement and the masses of light-quark hadrons determines the scale Lambda((MS) over bar) controlling the evolution of the perturbative QCD coupling. The relation between scales is obtained by matching the nonperturbative dynamics, as described by an effective conformal theory mapped to the light-front and its embedding in AdS space, to the perturbative QCD regime. The data for the effective coupling defined from the Bjorken sum rule alpha(g1) (Q(2)) are remarkably consistent with the Gaussian form predicted by LF holographic QCD. The result is an effective coupling defined at all momenta. The predicted value Lambda((NF=3))((MS) over bar) = 0.440m(rho) = 0.341 +/- 0.024 GeV is in agreement with the world average 0.339 +/- 0.010 GeV. We thus can connect Lambda((MS) over bar) to hadron masses. The analysis applies to any renormalization scheme. C1 [Brodsky, Stanley J.] Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94039 USA. [Deur, Alexandre] Thomas Jefferson Natl Accelerator Facil, Newport News, VA 23606 USA. [de Teramond, Guy F.] Univ Costa Rica, San Jose, Costa Rica. [Dosch, Hans Guenter] Inst Theoret Phys, D-6900 Heidelberg, Germany. RP Brodsky, SJ (reprint author), Stanford Univ, SLAC Natl Accelerator Lab, Stanford, CA 94039 USA. EM sjbth@slac.stanford.edu; deurpam@jlab.org; gdt@asterix.crnet.cr; h.g.dosch@thphys.uni-heidelberg.de NR 36 TC 5 Z9 5 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA PO BOX 128 FARRER RD, SINGAPORE 9128, SINGAPORE SN 2010-1945 J9 INT J MOD PHYS PY 2015 VL 39 DI 10.1142/S2010194515600812 PG 14 WC Physics, Multidisciplinary; Physics, Particles & Fields SC Physics GA BE7CN UT WOS:000375072200001 ER PT S AU Ushizima, D Carneiro, A Souza, M Medeiros, F AF Ushizima, Daniela Carneiro, Allan Souza, Marcelo Medeiros, Fatima BE Bebis, G Boyle, R Parvin, B Koracin, D Pavlidis, I Feris, R McGraw, T Elendt, M Kopper, R Ragan, E Ye, Z Weber, G TI Investigating Pill Recognition Methods for a New National Library of Medicine Image Dataset SO ADVANCES IN VISUAL COMPUTING, PT II (ISVC 2015) SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 11th International Symposium on Visual Computing (ISVC) CY DEC 14-16, 2015 CL Las Vegas, NV SP UNR, Desert Res Inst, LBNL, NASA Ames, BAE Syst, Intel, Ford, Hewlett Packard, Mitsubishi Elec Res Labs, Toyota, Gen Elect, Berkeley Lab DE Segmentation; Pill detection; NLM dataset ID CLUSTER-ANALYSIS; INFORMATION; SETS AB With the increasing access to pharmaceuticals, chances are that medication administration errors will occur more frequently. On average, individuals above age 65 take at least 14 prescriptions per year. Unfortunately, adverse drug reactions and noncompliance are responsible for 28% of hospitalizations of the elderly. Correctly identifying pills has become a critical task in patient care and safety. Using the recently released National Library of Medicine (NLM) pill image database, this paper investigates descriptors for pill detection and characterization. We describe efforts in investigating algorithms to segment NLM pills images automatically, and extract several features to assembly pill groups with priors based on FDA recommendations for pill physical attributes. Our contributions toward pill recognition automation are three-fold: we evaluate the 1,000 most common medications in the United States, provide masks and feature matrices for the NLM reference pill images to guarantee reproducibility of results, and discuss strategies to organize data for efficient content-based image retrieval. C1 [Ushizima, Daniela] Univ Calif Berkeley, BIDS, Berkeley, CA 94720 USA. [Ushizima, Daniela] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, CRD, Berkeley, CA 94720 USA. [Carneiro, Allan; Souza, Marcelo; Medeiros, Fatima] Univ Fed Ceara, LABVIS, BR-60020181 Fortaleza, Ceara, Brazil. RP Ushizima, D (reprint author), Univ Calif Berkeley, BIDS, Berkeley, CA 94720 USA. EM dushizima@lbl.gov; allanccarneiro@gmail.com; marcelo.mssouza@gmail.com; fsombra@ufc.br RI Medeiros, Fatima/E-1168-2011 OI Medeiros, Fatima/0000-0002-4143-1486 NR 17 TC 1 Z9 1 U1 0 U2 0 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-27863-6; 978-3-319-27862-9 J9 LECT NOTES COMPUT SC PY 2015 VL 9475 BP 410 EP 419 DI 10.1007/978-3-319-27863-6_38 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA BE8FF UT WOS:000376401000038 ER PT S AU Pradhan, N Benavides, A Zhu, Q Banic, AU AF Pradhan, Neera Benavides, Angela Zhu, Qin Banic, Amy Ulinski BE Bebis, G Boyle, R Parvin, B Koracin, D Pavlidis, I Feris, R McGraw, T Elendt, M Kopper, R Ragan, E Ye, Z Weber, G TI Evaluation of Fatigue Measurement Using Human Motor Coordination for Gesture-Based Interaction in 3D Environments SO ADVANCES IN VISUAL COMPUTING, PT II (ISVC 2015) SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 11th International Symposium on Visual Computing (ISVC) CY DEC 14-16, 2015 CL Las Vegas, NV SP UNR, Desert Res Inst, LBNL, NASA Ames, BAE Syst, Intel, Ford, Hewlett Packard, Mitsubishi Elec Res Labs, Toyota, Gen Elect, Berkeley Lab AB Benefits of immersive three-dimensional (3D) applications are enhanced by effective 3D interaction techniques. While gesture-based interaction provides benefits in these types of environments users commonly report higher fatigue than with other interaction solutions. Typically, fatigue is measured subjectively but may lack precision, consistency and depth. Our research proposes a novel, more consistent and predictable measure of fatigue. This paper presents the details of our technique based on human motor coordination, the results of an experimental study on gesture-based interaction, identifies attributing causes for fatigue and outlines design guidelines to reduce fatigue for gesture-based interaction techniques. These results have implications for gesture-based or mid-air interaction techniques for 3D environments, such as virtual environments and immersive visualizations. C1 [Pradhan, Neera; Benavides, Angela; Zhu, Qin; Banic, Amy Ulinski] Univ Wyoming, Dept Comp Sci, Laramie, WY 82071 USA. [Banic, Amy Ulinski] Idaho Natl Lab, Idaho Falls, ID USA. RP Benavides, A (reprint author), Univ Wyoming, Dept Comp Sci, Laramie, WY 82071 USA. EM neera@uwyo.edu; abenavi3@uwyo.edu; qzhu1@uwyo.edu; abanic@cs.uwyo.edu NR 17 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-27863-6; 978-3-319-27862-9 J9 LECT NOTES COMPUT SC PY 2015 VL 9475 BP 443 EP 452 DI 10.1007/978-3-319-27863-6_41 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA BE8FF UT WOS:000376401000041 ER PT S AU Sakou, LB Wilches, D Banic, A AF Sakou, Lionel B. Wilches, Daniel Banic, Amy BE Bebis, G Boyle, R Parvin, B Koracin, D Pavlidis, I Feris, R McGraw, T Elendt, M Kopper, R Ragan, E Ye, Z Weber, G TI Region Growing Selection Technique for Dense Volume Visualization SO ADVANCES IN VISUAL COMPUTING, PT II (ISVC 2015) SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 11th International Symposium on Visual Computing (ISVC) CY DEC 14-16, 2015 CL Las Vegas, NV SP UNR, Desert Res Inst, LBNL, NASA Ames, BAE Syst, Intel, Ford, Hewlett Packard, Mitsubishi Elec Res Labs, Toyota, Gen Elect, Berkeley Lab ID DESIGN AB Selection is a fundamental task in volume visualization as it is often the first step for manipulation and analysis tasks. The presented work describes and investigates a novel 3-Dimensional (3D) selection technique for dense clouds of points. This technique solves issues with current selection techniques employed in such applications by allowing users to select similar regions of datasets without requiring prior knowledge about the structures within the data, thus bypassing occlusion and high density. We designed a prototype and experimented on large dense volumetric datasets. The preliminary results of our performance evaluation and the user- simulated test show encouraging results and indicate in which environments this technique could have high potential. C1 [Sakou, Lionel B.; Wilches, Daniel; Banic, Amy] Univ Wyoming, Dept Comp Sci, Laramie, WY 82071 USA. [Banic, Amy] Idaho Natl Lab, Idaho Falls, ID USA. RP Wilches, D (reprint author), Univ Wyoming, Dept Comp Sci, Laramie, WY 82071 USA. EM lionel.sakou@gmail.com; dwilches@uwyo.edu; abanic@cs.uwyo.edu NR 18 TC 0 Z9 0 U1 1 U2 1 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-27863-6; 978-3-319-27862-9 J9 LECT NOTES COMPUT SC PY 2015 VL 9475 BP 745 EP 754 DI 10.1007/978-3-319-27863-6_70 PG 10 WC Computer Science, Artificial Intelligence; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods; Imaging Science & Photographic Technology SC Computer Science; Imaging Science & Photographic Technology GA BE8FF UT WOS:000376401000070 ER PT S AU Mastin, A Jaillet, P Chin, S AF Mastin, Andrew Jaillet, Patrick Chin, Sang BE Elbassioni, K Makino, K TI Randomized Minmax Regret for Combinatorial Optimization Under Uncertainty SO ALGORITHMS AND COMPUTATION, ISAAC 2015 SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 26th International Symposium on Algorithms and Computation (ISAAC) CY DEC 09-11, 2015 CL Nagoya, JAPAN SP Kayamori Fdn Informat Sci Advancement, Support Ctr Adv Telecommunicat Technol Res, Telecommunicat Advancement Fdn, Nagoya Univ, IPSJ, Special Interest Grp Algorithms, IEICE, Tech Comm Theoret Fdn Comp DE Robust optimization; Approximation algorithms; Game theory ID INTERVAL DATA; MAX; COMPLEXITY; VERSIONS; APPROXIMATION AB The minmax regret problem for combinatorial optimization under uncertainty can be viewed as a zero-sum game played between an optimizing player and an adversary, where the optimizing player selects a solution and the adversary selects costs with the intention of maximizing the regret of the player. The conventional minmax regret model considers only deterministic solutions/strategies, and minmax regret versions of most polynomial solvable problems are NP-hard. In this paper, we consider a randomized model where the optimizing player selects a probability distribution (corresponding to a mixed strategy) over solutions and the adversary selects costs with knowledge of the player's distribution, but not its realization. We show that under this randomized model, the minmax regret version of any polynomial solvable combinatorial problem becomes polynomial solvable. This holds true for both interval and discrete scenario representations of uncertainty. Using the randomized model, we show new proofs of existing approximation algorithms for the deterministic model based on primal-dual approaches. We also determine integrality gaps of minmax regret formulations, giving tight bounds on the limits of performance gains from randomization. Finally, we prove that minmax regret problems are NP-hard under general convex uncertainty. C1 [Mastin, Andrew] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. [Jaillet, Patrick] MIT, 77 Massachusetts Ave, Cambridge, MA 02139 USA. [Chin, Sang] Draper Lab, Cambridge, MA 02139 USA. RP Mastin, A (reprint author), Lawrence Livermore Natl Lab, Livermore, CA 94550 USA. EM mastin1@llnl.gov; jaillet@mit.edu; schin@draper.com NR 28 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-662-48971-0; 978-3-662-48970-3 J9 LECT NOTES COMPUT SC PY 2015 VL 9472 BP 491 EP 501 DI 10.1007/978-3-662-48971-0_42 PG 11 WC Computer Science, Theory & Methods SC Computer Science GA BE7EK UT WOS:000375151300042 ER PT S AU Farrell, M Goodrich, TD Lemons, N Reidl, F Villaamil, FS Sullivan, BD AF Farrell, Matthew Goodrich, Timothy D. Lemons, Nathan Reidl, Felix Villaamil, Fernando Sanchez Sullivan, Blair D. BE Gleich, DF Komjathy, J Litvak, N TI Hyperbolicity, Degeneracy, and Expansion of Random Intersection Graphs SO ALGORITHMS AND MODELS FOR THE WEB GRAPH, (WAW 2015) SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 12th International Workshop on Algorithms and Models for the Web-Graph (WAW) CY DEC 10-11, 2015 CL Eindhoven, NETHERLANDS SP EURANDOM, NETWORKS, Microsoft Res, Google ID 1ST-ORDER PROPERTIES; BOUNDED EXPANSION; SMALL-WORLD AB We establish the conditions under which several algorithmically exploitable structural features hold for random intersection graphs, a natural model for many real-world networks where edges correspond to shared attributes. Specifically, we fully characterize the degeneracy of random intersection graphs, and prove that the model asymptotically almost surely produces graphs with hyperbolicity at least log n. Further, we prove that when degenerate, the graphs generated by this model belong to a bounded-expansion graph class with high probability, a property particularly suitable for the design of linear time algorithms. C1 [Farrell, Matthew] Univ Washington, Dept Appl Math, Seattle, WA 98195 USA. [Goodrich, Timothy D.; Sullivan, Blair D.] N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA. [Lemons, Nathan] Los Alamos Natl Lab, Div Theoret, Los Alamos, NM USA. [Reidl, Felix; Villaamil, Fernando Sanchez] Rhein Westfal TH Aachen, Theoret Comp Sci, D-52062 Aachen, Germany. RP Sullivan, BD (reprint author), N Carolina State Univ, Dept Comp Sci, Raleigh, NC 27695 USA. EM msf9@uw.edu; tdgoodri@ncsu.edu; nlemons@gmail.com; reidl@cs.rwth-aachen.de; fernando.sanchez@cs.rwth-aachen.de; blair_sullivan@ncsu.edu OI Farrell, Matthew/0000-0001-8359-8666 NR 32 TC 0 Z9 0 U1 0 U2 2 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-26784-5; 978-3-319-26783-8 J9 LECT NOTES COMPUT SC PY 2015 VL 9479 BP 29 EP 41 DI 10.1007/978-3-319-26784-5_3 PG 13 WC Computer Science, Information Systems; Computer Science, Interdisciplinary Applications; Computer Science, Theory & Methods SC Computer Science GA BE7GK UT WOS:000375221400003 ER PT S AU Dubey, A Graves, DT AF Dubey, Anshu Graves, Daniel T. BE Hunold, S Costan, A Gimenez, D Iosup, A Ricci, L Requena, MEG Scarano, V Varbanescu, AL Scott, SL Lankes, S Weidendorfer, J Alexander, M TI A Design Proposal for a Next Generation Scientific Software Framework SO EURO-PAR 2015: PARALLEL PROCESSING WORKSHOPS SE Lecture Notes in Computer Science LA English DT Proceedings Paper CT 21st International Conference on Parallel and Distributed Computing (Euro-Par) CY AUG 24-28, 2015 CL Vienna, AUSTRIA SP Vienna Univ Technol, Fac Informat, Res Grp Parallel Comp AB High performance scientific software has many unique and challenging characteristics. These codes typically consist of many different stages of computation with different algorithms and components with diverse requirements. These heterogeneous algorithms, coupled with platform heterogeneity, create serious performance challenges. To retain performance, portability and maintainability of the software on heterogeneous platforms, more abstractions have to be integrated into the software design. Most of these abstractions are still in the research stage and scientific codes have barely started using them. However, it is urgent that we start considering the abstraction interplay in designing the next generation of software architecture. We propose a software architecture for PDE-based scientific codes that combines three abstractions in a code framework suitable for expected heterogeneity in platforms, while retaining separation of concerns, performance and portability of the software. We support our proposal with an example design for an adaptive mesh refinement based framework. C1 [Dubey, Anshu; Graves, Daniel T.] Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. RP Dubey, A (reprint author), Univ Calif Berkeley, Lawrence Berkeley Natl Lab, Computat Res Div, Berkeley, CA 94720 USA. EM adubey@lbl.gov NR 20 TC 0 Z9 0 U1 0 U2 0 PU SPRINGER INT PUBLISHING AG PI CHAM PA GEWERBESTRASSE 11, CHAM, CH-6330, SWITZERLAND SN 0302-9743 BN 978-3-319-27308-2; 978-3-319-27307-5 J9 LECT NOTES COMPUT SC PY 2015 VL 9523 BP 221 EP 232 DI 10.1007/978-3-319-27308-2_19 PG 12 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BE7GP UT WOS:000375226100019 ER EF