FN Thomson Reuters Web of Science™ VR 1.0 PT B AU Maji, AK AF Maji, AK BE Lin, YK Su, TC TI Acoustic emission monitoring of pultruded bridge members SO ENGINEERING MECHANICS: PROCEEDINGS OF THE 11TH CONFERENCE, VOLS 1 AND 2 LA English DT Proceedings Paper CT 11th Engineering Mechanics Conference CY MAY 19-22, 1996 CL FT LAUDERDALE, FL SP Amer Soc Civil Engineers, Engn Mech Div, Appl Stochast Res, Florida Atlantic Univ Ctr C1 USAF,VTSC,ALBUQUERQUE,NM 87117. NR 0 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 BN 0-7844-0172-1 PY 1996 BP 963 EP 966 PG 4 WC Engineering, Civil; Mechanics SC Engineering; Mechanics GA BG42L UT WOS:A1996BG42L00239 ER PT B AU Kitchens, JH AF Kitchens, JH BE Newton, VW TI The bombing of Auschwitz reexamined SO FDR AND THE HOLOCAUST SE FRANKLIN AND ELEANOR ROOSEVOLT INSTITUTE SERIES ON DIPLOMATIC AND ECONOMIC HISTORY LA English DT Proceedings Paper CT Conference on Policies and Responses of the American Government Toward the Holocaust CY NOV 11-12, 1993 CL FRANK D ROOSEVELT LIB, HYDE PK, NY SP Franklin & Eleanor Roosevelt Inst HO FRANK D ROOSEVELT LIB C1 USAF,HIST RES CTR,MAXWELL AFB,AL. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ST MARTINS PRESS INC PI NEW YORK PA SCHOLARLY AND REFERENCE BOOKS DIVISION, 175 FIFTH AVE, NEW YORK, NY 10010 BN 0-312-12226-8 J9 FERI DIPL ECON HIST PY 1996 VL 10 BP 183 EP 217 PG 35 WC History SC History GA BF50L UT WOS:A1996BF50L00014 ER PT J AU Soref, RA AF Soref, RA TI Fiber grating prism for true time delay beamsteering SO FIBER AND INTEGRATED OPTICS LA English DT Article DE Bragg gratings; fiber optics; optoelectronics; phased-array radar; semiconductor waveguides; time delay AB This article presents theoretical designs for a beamsteerer that uses one laser source whose wavelength is electrically tuned. Transmit/receive beamsteering of a phased-array antenna is obtained with prism-shaped arrays of fiber Bragg gratings or with waveguided gratings integrated in a semiconductor chip. An analysis of chirped and uniform grating requirements is given. RP Soref, RA (reprint author), USAF,ROME LAB,ELECTROMAGNET & RELIABIL DIRECTORATE,BEDFORD,MA 01731, USA. NR 5 TC 55 Z9 58 U1 0 U2 1 PU TAYLOR & FRANCIS PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0146-8030 J9 FIBER INTEGRATED OPT JI Fiber Integr. Opt. PY 1996 VL 15 IS 4 BP 325 EP 333 DI 10.1080/01468039608202279 PG 9 WC Optics SC Optics GA VR265 UT WOS:A1996VR26500005 ER PT B AU Ha, JC Duryea, J Davis, C Bush, J AF Ha, JC Duryea, J Davis, C Bush, J BE Udd, E Lefevre, HC Hotate, K TI Fiber optic rate gyros SO FIBER OPTIC GYROS: 20TH ANNIVERSARY CONFERENCE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Fiber Optic Gyros - 20th Anniversary Conference CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE fiber-optic; gyro; IFOG; integrated optic; rate sensor; interferometer AB Progress on the development of an ultra miniature Fiber Optic Fate Gyro is reported. A unique IFOG design implementing low cost components is presented where package volume is less than two cubic inches including electronics. This design is capable of meeting operational performance requirements over the temperature range of -57 to +71 C with electronic power limited to 3 Watts. The IFOG circuit consists of an ELED source at 1.3 um, a non-PM source/receiver multiplex circuit using a standard Fused Biconic Tapered coupler, an Annealed Proton Exchange Integrated Optic ''gyro chip''; and a volume efficient ''racetrack'' PM sensing coil configuration. Gyro electronics have been reduced to a single MCM board. A discussion of the design parameters, component requirements, and test data are presented. RP Ha, JC (reprint author), USAF,WRIGHT LAB,AACN,2185 AVION CIRCLE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 3 Z9 3 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2225-8 J9 P SOC PHOTO-OPT INS PY 1996 VL 2837 BP 152 EP 163 PG 12 WC Optics SC Optics GA BG73L UT WOS:A1996BG73L00015 ER PT J AU Watson, SM Kroutil, RT Traynor, CA Edgerton, ES Bowser, JJ Zweidinger, RB Olson, RN Dalley, RP Bone, WJ Price, R AF Watson, SM Kroutil, RT Traynor, CA Edgerton, ES Bowser, JJ Zweidinger, RB Olson, RN Dalley, RP Bone, WJ Price, R TI Remote-sensing and in-situ atmospheric chemistry studies with the use of a manned hot air balloon platform SO FIELD ANALYTICAL CHEMISTRY AND TECHNOLOGY LA English DT Article DE atmospheric chemistry; in situ measurements; remote-sensing measurements; chemical effluents; vertical profiling ID TRANSFORM INFRARED INTERFEROGRAMS AB Tethered and free-flying manned hot air balloons have been demonstrated as platforms for various remote-sensing and in situ atmospheric chemistry measurements. These platforms are comparatively inexpensive to operate; do not cause atmospheric disturbances, as do higher speed platforms; and are extremely stable and free of the vibrations inherent in aircraft structures. The equipment operated on the balloons in connection with these experiments includes FTIR spectrometers, video recording equipment, ozone and nitrogen oxide analyzers, SUMMA canisters, annular denuders, fine particle mass samplers, trace metal samplers, and gas and aerosol phase mercury samplers. The Lagrangian- and Eulerian-type atmospheric chemistry experiments conducted on and from the balloon included chemical effluents characterization, vertical profiling and transport of criteria pollutants in the Utah urban areas, and atmospheric mercury studies in the Florida Everglades. (C) 1996 John Wiley & Sons, Inc. C1 TSUE, 412 TEST WING, DET 1, HILL AFB, UT 84056 USA. UNIV UTAH, CTR ENVIRONM TECHNOL, SALT LAKE CITY, UT 84112 USA. USA EDGEWOOD RES, CTR DEV & ENGN, ABERDEEN PROVING GROUND, MD USA. DARPA HIGH PERFORMANCE COMP APPLICAT, ARLINGTON, VA 22204 USA. ESE ENVIRONM INC, DURHAM, NC 27713 USA. US EPA, NERL, ERC, RES TRIANGLE PK, NC 27711 USA. DEPT ENVIRONM QUAL, DIV AIR QUAL MONITORING SECT, SALT LAKE CITY, UT 84101 USA. NR 8 TC 5 Z9 5 U1 1 U2 5 PU JOHN WILEY & SONS INC PI HOBOKEN PA 111 RIVER ST, HOBOKEN, NJ 07030 USA SN 1086-900X J9 FIELD ANAL CHEM TECH JI Field Anal. Chem. Technol. PY 1996 VL 1 IS 1 BP 13 EP 22 PG 10 WC Chemistry, Analytical; Environmental Sciences; Instruments & Instrumentation SC Chemistry; Environmental Sciences & Ecology; Instruments & Instrumentation GA WY378 UT WOS:A1996WY37800003 ER PT S AU Snyder, CE Gschwender, LJ AF Snyder, CE Gschwender, LJ BE Totten, GE Reichel, J TI Fire Resistant hydraulic fluids and fire resistance test methods used by the air force SO FIRE RESISTANCE OF INDUSTRIAL FLUIDS SE AMERICAN SOCIETY FOR TESTING AND MATERIALS SPECIAL TECHNICAL PUBLICATION LA English DT Proceedings Paper CT Symposium on Fire Resistance of Industrial Fluids CY JUN 20, 1995 CL INDIANAPOLIS, IN SP ASTM, Comm D2 Petr Prod & Lubricants DE flammability; fire resistant hydraulic fluids; Department of Defense C1 USAF,WRIGHT LAB,MAT DIRECTORATE,MLBT,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 1 Z9 1 U1 0 U2 2 PU AMERICAN SOCIETY TESTING AND MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DRIVE, W CONSHOHOCKEN, PA 19428-2959 SN 1071-5827 BN 0-8031-2041-9 J9 AM SOC TEST MATER PY 1996 VL 1284 BP 72 EP 77 DI 10.1520/STP16281S PG 6 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BF13M UT WOS:A1996BF13M00006 ER PT B AU Schlie, LA AF Schlie, LA BE Rohlena, K Kodymova, J Krakilova, B TI Overview of repetitively pulsed, photolytic iodine lasers SO FOURTH INTERNATIONAL WORKSHOP ON IODINE LASERS AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 4th International Workshop on Iodine Lasers and Applications CY SEP 18-22, 1995 CL TREST CASTLE, CZECH REPUBLIC SP Acad Sci Czech Republic, Inst Phys, SPIE Czech Republic Chapter C1 USAF,PHILLIPS LAB,PL LIDD,LASER & IMAGING DIRECTORATE,KIRTLAND AFB,NM 87117. RI Kodymova, Jarmila/H-3077-2014 NR 0 TC 0 Z9 0 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2151-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2767 BP 28 EP 45 DI 10.1117/12.232191 PG 2 WC Optics SC Optics GA BF25E UT WOS:A1996BF25E00003 ER PT J AU Lee, SS Stinchcomb, WW AF Lee, SS Stinchcomb, WW TI Damage mechanisms and fracture modes in Nicalon/CAS-II laminates SO FRACTURE OF COMPOSITES SE KEY ENGINEERING MATERIALS LA English DT Article DE composite materials; ceramic matrix composites; damage; fracture; cracks; fatigue; fiber-matrix interface ID CARBON FIBER COMPOSITES; ELECTRON-MICROSCOPY; GLASS; INTERFACES AB A more complete understanding of damage mechanisms and the effects of damage on long-term performance is needed to advance the development and safe use of damage tolerant, durable ceramic composites. The results presented in this paper provide basic information on damage mechanisms and fracture modes in Nicalon/CAS-II glass-ceramic matrix composites due to monotonic and cyclic loadings. Results are presented for room temperature tests on as-received and heat-treated materials. Micro-matrix cracks and matrix cracks in both transverse and longitudinal plies are important damage modes which cause large reductions in longitudinal stiffness. The strength of the fiber-matrix interface is increased by heat-treatment and affects the nature of the fracture of the laminates. Fiber abrasion associated with weak interfaces in as-received material, and brittle fracture of fibers associated with strong interfaces appear to be critical damage mechanisms which cause fatigue failure. C1 VIRGINIA POLYTECH INST & STATE UNIV,DEPT ENGN SCI & MECH,BLACKSBURG,VA 24061. RP Lee, SS (reprint author), WRIGHT LAB,MLLN,BLDG 655,2230 10TH ST,STE 1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 15 TC 1 Z9 1 U1 0 U2 1 PU TRANS TECH PUBLICATIONS PI CLAUSTHAL ZELLERFE PA EINERSBERGER BLICK 28, PO BOX 266, W-3392 CLAUSTHAL ZELLERFE, GERMANY SN 1013-9826 J9 KEY ENG MAT PY 1996 VL 120- BP 227 EP 256 PG 30 WC Materials Science, Composites SC Materials Science GA BG13L UT WOS:A1996BG13L00009 ER PT J AU Fishbine, BH AF Fishbine, BH TI Carbon nanotube alignment and manipulation using electrostatic fields SO FULLERENE SCIENCE AND TECHNOLOGY LA English DT Article ID TUBULES; SPECTRA; CELLS AB Carbon nanotubes can be aligned and manipulated using an electrostatic dipole moment induced by an applied electrostatic field. The theory of this technique is discussed, as well as some applications. C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 50 TC 18 Z9 18 U1 0 U2 39 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 1064-122X J9 FULLERENE SCI TECHN JI Fullerene Sci. Technol. PY 1996 VL 4 IS 1 BP 87 EP 100 DI 10.1080/10641229608001539 PG 14 WC Chemistry, Physical; Materials Science, Multidisciplinary; Physics, Atomic, Molecular & Chemical SC Chemistry; Materials Science; Physics GA TU588 UT WOS:A1996TU58800007 ER PT B AU Beers, MSM Vachtsevanos, GJ AF Beers, MSM Vachtsevanos, GJ GP IEEE TI An intelligent hierarchical decision architecture for operational test and evaluation SO FUZZ-IEEE '96 - PROCEEDINGS OF THE FIFTH IEEE INTERNATIONAL CONFERENCE ON FUZZY SYSTEMS, VOLS 1-3 LA English DT Proceedings Paper CT 5th IEEE International Conference on Fuzzy Systems (FUZZ-IEEE 96) CY SEP 08-11, 1996 CL NEW ORLEANS, LA SP IEEE, Neural Networks Council C1 USAF,AF OPERAT TEST & EVALUAT CTR,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3646-1 PY 1996 BP 342 EP 348 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BG47R UT WOS:A1996BG47R00057 ER PT S AU Silkowski, E Yeo, YK Hengehold, RL Khan, MA Lei, T Evans, K Cerny, C AF Silkowski, E Yeo, YK Hengehold, RL Khan, MA Lei, T Evans, K Cerny, C BE Ponce, FA Dupuis, RD Nakamura, S Edmond, JA TI Annealing study of ion implanted MOCVD and MBE grown GaN SO GALLIUM NITRIDE AND RELATED MATERIALS SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT 1st International Symposium on Gallium Nitride and Related Materials CY NOV 27-DEC 01, 1995 CL BOSTON, MA SP Mat Res Soc, Adv Res Projects Agcy, Air Prod & Chem Inc, AIXTRON, Akzo Chem Inc, USA, Army Res Off, Cree Res Inc, Crystal Syst, EMCORE Corp, Hewlett Packard OED, JEOL US, Morton Int, Natl Sci Fdn, USN, Off Naval Res, Rockwell Int C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 12 Z9 12 U1 0 U2 1 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-298-7 J9 MATER RES SOC SYMP P PY 1996 VL 395 BP 813 EP 818 PG 6 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BG25Y UT WOS:A1996BG25Y00120 ER PT B AU Kovacs, M Ghoshroy, S Hasson, V Pohle, R Ruffatto, D Czyzak, S Wendt, R AF Kovacs, M Ghoshroy, S Hasson, V Pohle, R Ruffatto, D Czyzak, S Wendt, R BE Sze, RC TI Phase 1 high performance CO2 ladar surveillance sensor description and test results SO GAS AND CHEMICAL LASERS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Gas and Chemical Lasers CY JAN 31-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE laser radar; ladar; satellite trajectory; satellite surveillance C1 USAF,FL,WASHINGTON,DC 20330. NR 0 TC 1 Z9 1 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2076-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2702 BP 84 EP 94 DI 10.1117/12.236905 PG 11 WC Optics SC Optics GA BF34Z UT WOS:A1996BF34Z00007 ER PT B AU Rittenhouse, TL Phipps, SP Helms, CA Truesdell, KA AF Rittenhouse, TL Phipps, SP Helms, CA Truesdell, KA BE Sze, RC TI High efficiency operation of a 5 cm gain length supersonic chemical oxygen-iodine laser SO GAS AND CHEMICAL LASERS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Gas and Chemical Lasers CY JAN 31-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE COIL; Chemical Oxygen-Iodine Laser; chemical laser; iodine laser; supersonic; BHP C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 20 Z9 20 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2076-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2702 BP 333 EP 338 DI 10.1117/12.236887 PG 6 WC Optics SC Optics GA BF34Z UT WOS:A1996BF34Z00031 ER PT B AU Frank, BD Wright, R Rey, S AF Frank, BD Wright, R Rey, S GP ACSM TI Linking preference analysis techniques and GIS for fire fuel management SO GIS/LIS '96 - ANNUAL CONFERENCE AND EXPOSITION PROCEEDINGS LA English DT Proceedings Paper CT GIS/LIS 1996 Annual Conference and Exposition CY NOV 19-21, 1996 CL DENVER, CO SP Amer Congress Surveying & Mapping, Amer Soc Photogrammetry & Remote Sensing, AM FM Int, Assoc Amer Geographers, Urban & Reg Informat Syst Assoc, Amer Public Works Assoc AB Many Department of Defense installations have come under increasing scrutiny for compliance with federal legislation regarding wildland management. These facilities pose a unique management challenge in that they must balance military training requirements while complying with federally mandated environmental protection policies. One particularly troublesome environmental consequence of military training is wildland fires. A key strategy in controlling wildland fires is fuel management. Unfortunately, resource managers and fire officials do not necessarily agree on the relative importance of factors involved in developing a prioritized fuel management plan. Therefore, the resulting wildland fire fuel management plans must reconcile competing and conflicting management strategies. This paper presents the results of research conducted at Camp Pendleton Marine Corps Base located in northern San Diego County which used a Multicriteria Decision-making approach known as Preference Analysis as a structured framework for modeling individual decision-maker's management strategies in a geographic information system(GIS). Three preference analysis techniques were assessed for their ability to: 1) represent a decision-maker's perspective on the fire management problem, 2) identify areas of agreement and disagreement between decision-makers, and 3) highlight inconsistencies between a decision-maker's stated objectives and his/her actions. Results suggest this approach provides a flexible decision support methodology for examining and reconciling competing management objectives. RP Frank, BD (reprint author), USAF ACAD,DEPT ECON & GEOG,2354 FAIRCHILD DR,SUITE 6K12,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC PHOTOGRAMMETRY & REMOTE SENSING PI BETHESDA PA 5410 GROSVENOR LAND, SUITE 210, BETHESDA, MD 20814-2160 BN 1-57083-042-8 PY 1996 BP 1124 EP 1140 PG 17 WC Food Science & Technology; Remote Sensing SC Food Science & Technology; Remote Sensing GA BG94A UT WOS:A1996BG94A00114 ER PT B AU Cullis, BJ AF Cullis, BJ GP ACSM TI Clarifying the value of the human context to GIS adoption SO GIS/LIS '96 - ANNUAL CONFERENCE AND EXPOSITION PROCEEDINGS LA English DT Proceedings Paper CT GIS/LIS 1996 Annual Conference and Exposition CY NOV 19-21, 1996 CL DENVER, CO SP Amer Congress Surveying & Mapping, Amer Soc Photogrammetry & Remote Sensing, AM FM Int, Assoc Amer Geographers, Urban & Reg Informat Syst Assoc, Amer Public Works Assoc RP Cullis, BJ (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC PHOTOGRAMMETRY & REMOTE SENSING PI BETHESDA PA 5410 GROSVENOR LAND, SUITE 210, BETHESDA, MD 20814-2160 BN 1-57083-042-8 PY 1996 BP 1184 EP 1198 PG 15 WC Food Science & Technology; Remote Sensing SC Food Science & Technology; Remote Sensing GA BG94A UT WOS:A1996BG94A00118 ER PT S AU Ninneman, RR Baldwin, RD Blankinship, RM AF Ninneman, RR Baldwin, RD Blankinship, RM BE Culp, RD Odefey, ML TI System identification methods for the development of experimentally-based control systems on the space integrated controls experiment (SPICE) testbed SO GUIDANCE AND CONTROL 1996 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 07-11, 1996 CL BRECKENRIDGE, CO SP Amer Astronaut Soc, Rocky Mt Sect C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-412-5 J9 ADV ASTRONAUT SCI PY 1996 VL 92 BP 165 EP 172 PG 8 WC Engineering, Aerospace SC Engineering GA BF88Q UT WOS:A1996BF88Q00011 ER PT S AU Conklin, T Barker, K AF Conklin, T Barker, K BE Culp, RD Odefey, ML TI Understanding the nature of beam vibrations in space through the flexbeam experiment, G-342 SO GUIDANCE AND CONTROL 1996 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 07-11, 1996 CL BRECKENRIDGE, CO SP Amer Astronaut Soc, Rocky Mt Sect C1 USAF ACAD,COLORADO SPRINGS,CO 80840. NR 0 TC 1 Z9 1 U1 0 U2 2 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-412-5 J9 ADV ASTRONAUT SCI PY 1996 VL 92 BP 409 EP 427 PG 19 WC Engineering, Aerospace SC Engineering GA BF88Q UT WOS:A1996BF88Q00028 ER PT B AU Hoffman, PF George, LC Berberich, GL Thompson, DB Dollar, DM AF Hoffman, PF George, LC Berberich, GL Thompson, DB Dollar, DM BE Kun, LG TI Provider workstation (PWS) prototype SO HEALTH CARE INFORMATION INFRASTRUCTURE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Health Care Information Infrastructure CY OCT 23-24, 1995 CL PHILADELPHIA, PA SP Soc Photo Opt Instrumentat Engineers DE computer-based patient record (CPR); image-based patient record; provider workstation; relational data base; national performance review (NPR); reinventing government managed care C1 AIR COMBAT COMMAND,LANGLEY AFB,VA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1982-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2618 BP 87 EP 91 DI 10.1117/12.231665 PG 5 WC Medical Informatics; Optics SC Medical Informatics; Optics GA BF13B UT WOS:A1996BF13B00013 ER PT B AU Craig, AE AF Craig, AE BE Schwarz, TA Francis, M TI Positioning optical memory technologies among high-density systems SO HIGH-DENSITY DATA RECORDING AND RETRIEVAL TECHNOLOGIES SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on High-Density Data Recording and Retrieval Technologies CY OCT 23-24, 1995 CL PHILADELPHIA, PA SP Soc Photo Opt Instrumentat Engineers C1 USAF,OFF SCI RES,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1968-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2604 BP 2 EP 10 DI 10.1117/12.230042 PG 9 WC Optics SC Optics GA BF03C UT WOS:A1996BF03C00001 ER PT B AU Crane, PM AF Crane, PM BE Faust, NL TI Infrared scene simulation to support installed systems avionics test and evaluation SO HIGH-FIDELITY SIMULATION FOR TRAINING, TEST SUPPORT, MISSION REHEARSAL, AND CIVILIAN APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on High-Fidelity Simulation for Training, Test Support, Mission Rehearsal, and Civilian Applications CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE infrared; simulation; test; real-time C1 USAF,ARMSTRONG LAB,AIRCREW TRAINING RES DIV,MESA,AZ. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2121-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2740 BP 182 EP 186 DI 10.1117/12.242980 PG 5 WC Optics SC Optics GA BG01V UT WOS:A1996BG01V00021 ER PT B AU Laurenzano, JM Liby, BW Grannis, JO Greives, KH AF Laurenzano, JM Liby, BW Grannis, JO Greives, KH BE Mei, SS Truesdell, KA TI Impact of lensing on interferometric analysis of high average power solid-state media SO HIGH-POWER LASERS: SOLID STATE, GAS, EXCIMER, AND OTHER ADVANCED LASERS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on High-Power Lasers - Solid State, Gas, Excimer, and Other Advanced Lasers CY NOV 04-05, 1996 CL BEIJING, PEOPLES R CHINA SP Soc Photo Opt Instrumentat Engineers, China Opt & Optoelectr Manufacturers Assoc, Chinese Opt Soc, Natl Nat Sci Fdn China, N China Optoelectr Ind Corp, China Daheng Corp, Photon Soc Chinese Americans, Opt Soc Amer DE interferometry; solid-state lasers; thermal lensing; Michelson interferometer; Mach-Zehnder interferometer C1 USAF,PHILLIPS LAB,LIDA,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2290-8 J9 P SOC PHOTO-OPT INS PY 1996 VL 2889 BP 166 EP 170 DI 10.1117/12.253254 PG 5 WC Optics SC Optics GA BG60Y UT WOS:A1996BG60Y00026 ER PT B AU Kyllonen, PC AF Kyllonen, PC BE Dennis, I Tapsfield, P TI Is working memory capacity Spearman's g? SO HUMAN ABILITIES: THEIR NATURE AND MEASUREMENT LA English DT Proceedings Paper CT Symposium on Human Abilities - Their Nature and Measurement CY 1993 CL UNIV PLYMOUTH, PLYMOUTH, ENGLAND HO UNIV PLYMOUTH C1 ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 0 TC 74 Z9 76 U1 1 U2 4 PU LAWRENCE ERLBAUM ASSOC PUBL PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430 BN 0-8058-1800-6 PY 1996 BP 49 EP 75 PG 27 WC Psychology, Developmental SC Psychology GA BG51Z UT WOS:A1996BG51Z00005 ER PT B AU Ree, MJ Earles, JA AF Ree, MJ Earles, JA BE Dennis, I Tapsfield, P TI Predicting occupational criteria: Not much more than g SO HUMAN ABILITIES: THEIR NATURE AND MEASUREMENT LA English DT Proceedings Paper CT Symposium on Human Abilities - Their Nature and Measurement CY 1993 CL UNIV PLYMOUTH, PLYMOUTH, ENGLAND HO UNIV PLYMOUTH C1 ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 0 TC 9 Z9 9 U1 0 U2 0 PU LAWRENCE ERLBAUM ASSOC PUBL PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430 BN 0-8058-1800-6 PY 1996 BP 151 EP 165 PG 15 WC Psychology, Developmental SC Psychology GA BG51Z UT WOS:A1996BG51Z00010 ER PT J AU Cooke, NJ Neville, KJ Rowe, AL AF Cooke, NJ Neville, KJ Rowe, AL TI Procedural network representations of sequential data SO HUMAN-COMPUTER INTERACTION LA English DT Article ID KNOWLEDGE AB Sequential data collected for usability testing, knowledge engineering, or cognitive task analysis are rich with information-so rich that interpretation can often be overwhelming. This dilemma can be viewed as a data reduction problem. PRONET (PROcedural NETworks), a method for reducing sequential data in terms of procedural networks, is introduced and then applied and evaluated in two case studies-one involving human-computer interaction (HCI) in a simulated mission control operation at the National Aeronautics and Space Administration and the other involving avionics troubleshooting behavior for an intelligent tutor application. The method involves five steps-collecting data, encoding data, generating transition matrices, conducting Pathfinder analysis, and interpreting procedural networks. The method employs the Pathfinder network scaling algorithm, which is particularly suited for asymmetric data. Evidence is presented to support the descriptive and predictive utility of this form of data reduction. In addition, lessons learned in applying PRONET to the two cases are discussed, applications of PRONET to HCI are described, and guidelines are offered for using PRONET in exploratory sequential data analysis. C1 RICE UNIV, HOUSTON, TX 77251 USA. USAF, ARMSTRONG LAB, HUMAN RESOURCES DIRECORATE, WASHINGTON, DC USA. RP Cooke, NJ (reprint author), NEW MEXICO STATE UNIV, DEPT PSYCHOL, LAS CRUCES, NM 88003 USA. NR 32 TC 18 Z9 19 U1 0 U2 3 PU LAWRENCE ERLBAUM ASSOC INC-TAYLOR & FRANCIS PI PHILADELPHIA PA 325 CHESTNUT STREET, STE 800, PHILADELPHIA, PA 19106 USA SN 0737-0024 J9 HUM-COMPUT INTERACT JI Hum.-Comput. Interact. PY 1996 VL 11 IS 1 BP 29 EP 68 DI 10.1207/s15327051hci1101_2 PG 40 WC Computer Science, Cybernetics; Computer Science, Theory & Methods SC Computer Science GA UE457 UT WOS:A1996UE45700002 ER PT J AU Murphey, CL Jackson, JW Morrisey, JL Gomez, RA Menchaca, EM Ward, WW Bruun, G Blackwell, PH Nikaein, A AF Murphey, CL Jackson, JW Morrisey, JL Gomez, RA Menchaca, EM Ward, WW Bruun, G Blackwell, PH Nikaein, A TI Clinical and methodological evaluation of ELISA technique for PRA in renal transplant recipients. SO HUMAN IMMUNOLOGY LA English DT Meeting Abstract C1 SW IMMUNODIAGNOST INC,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX. UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0198-8859 J9 HUM IMMUNOL JI Hum. Immunol. PY 1996 VL 49 SU 1 BP 41 EP 41 DI 10.1016/S0198-8859(96)89983-6 PG 1 WC Immunology SC Immunology GA VD912 UT WOS:A1996VD91200075 ER PT B AU Kar, A Rothenflue, JA Latham, WP AF Kar, A Rothenflue, JA Latham, WP GP LASER INST AMER TI Mathematical modeling of thick-section cutting with Chemical Oxygen-Iodine Laser SO ICALEO'96 - PROCEEDINGS OF THE LASER MATERIALS PROCESSING CONFERENCE SE LASER INSTITUTE OF AMERICA - PROCEEDINGS LA English DT Proceedings Paper CT Laser Materials Processing Conference (ICALEO 96) CY OCT 14-17, 1996 CL DETROIT, MI SP Laser Inst Amer AB Almost all laser-assisted materials processing involve melting, vaporization and plasma formation. These phenomena affect the utilization. of laser energy for materials processing. To account for the effect of these phases, an effective absorptivity is defined, and a simple mathematical model is developed for thick-section stainless cutting with a high power Chemical Oxygen-Iodine Laser. (COIL). The model is based on overall energy balance, and if: relates the cutting depth with various process parameters that can be used to predict scaled laser materials processing performance to very thick sections. The effects of various process parameters such as laser power, spot size, cutting speed and cutting gas velocity on the cutting depth are discussed. The results of the mathematical model are compared with experimental data. Such comparison provides a means of determining the effective absorptivity during laser materials processing. C1 USAF,PHILLIPS LAB,APPL LASER TECHNOL BRANCH,LIDB,KIRTLAND AFB,NM 87117. USAF,PHILLIPS LAB,LASERS & IMAGING DIRECTORATE,LI,KIRTLAND AFB,NM 87117. RP Kar, A (reprint author), UNIV CENT FLORIDA,DEPT MECH & AEROSP ENGN,CTR RES & EDUC OPT & LASER,ORLANDO,FL 32816, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LASER INST AMERICA PI ORLANDO PA 12424 RESEARCH PKWY, STE 130, ORLANDO, FL 32826 BN 0-912035-54-4 J9 LIA P PY 1996 VL 81 BP B204 EP B213 PG 2 WC Optics SC Optics GA BH97F UT WOS:A1996BH97F00040 ER PT B AU Harmon, ME Baird, LC AF Harmon, ME Baird, LC GP IEEE TI Residual advantage learning applied to a differential game SO ICNN - 1996 IEEE INTERNATIONAL CONFERENCE ON NEURAL NETWORKS, VOLS. 1-4 LA English DT Proceedings Paper CT 1996 IEEE International Conference on Neural Networks (ICNN 96) CY JUN 02-06, 1996 CL WASHINGTON, DC SP IEEE C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3211-3 J9 IEEE IJCNN PY 1996 BP 329 EP 334 PG 6 WC Computer Science, Artificial Intelligence SC Computer Science GA BG23M UT WOS:A1996BG23M00057 ER PT B AU Serna, CM Baird, L AF Serna, CM Baird, L GP IEEE TI Comparison of brain structure to a backpropagation-learned-structure SO ICNN - 1996 IEEE INTERNATIONAL CONFERENCE ON NEURAL NETWORKS, VOLS. 1-4 LA English DT Proceedings Paper CT 1996 IEEE International Conference on Neural Networks (ICNN 96) CY JUN 02-06, 1996 CL WASHINGTON, DC SP IEEE C1 USAF ACAD,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3211-3 J9 IEEE IJCNN PY 1996 BP 706 EP 711 PG 6 WC Computer Science, Artificial Intelligence SC Computer Science GA BG23M UT WOS:A1996BG23M00125 ER PT S AU Reinhardt, KC Lamp, TR Geis, JW Colozza, AJ AF Reinhardt, KC Lamp, TR Geis, JW Colozza, AJ BE Chetty, PRK Jackson, WD TI Solar-powered unmanned aerial vehicles SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 USAF,WRIGHT LAB,AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 1 Z9 1 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 41 EP 46 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00007 ER PT S AU Reinhardt, KC Marciniak, MA AF Reinhardt, KC Marciniak, MA BE Chetty, PRK Jackson, WD TI Wide-bandgap power electronics for the more electric aircraft SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 127 EP 132 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00023 ER PT S AU Trosen, DW Cannon, BJ AF Trosen, DW Cannon, BJ BE Chetty, PRK Jackson, WD TI Electric actuation and control system SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 USAF,WRIGHT LAB,FIGS,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 197 EP 202 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00035 ER PT S AU Loeber, G Vukson, SP Erbacher, JK AF Loeber, G Vukson, SP Erbacher, JK BE Chetty, PRK Jackson, WD TI Nickel-metal hydride (Ni-MH) technology evaluation for aircraft battery applications SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 357 EP 362 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00062 ER PT S AU Schuller, M Phillips, PH Reiners, E Merrill, J Sievers, R Svedberg, R Ivanenok, J Crowley, C Izenson, M AF Schuller, M Phillips, PH Reiners, E Merrill, J Sievers, R Svedberg, R Ivanenok, J Crowley, C Izenson, M BE Chetty, PRK Jackson, WD TI Vacuum testing of high efficiency AMTEC cells SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 USAF,PHILLIPS LAB,VTP,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 2 U2 2 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 877 EP 884 PG 8 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00154 ER PT S AU Murphy, TJ Bowman, WJ AF Murphy, TJ Bowman, WJ BE Chetty, PRK Jackson, WD TI An improved method for measuring the compactness factor in a porous medium SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 1867 EP 1872 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00330 ER PT S AU Murphy, T Bowman, WJ AF Murphy, T Bowman, WJ BE Chetty, PRK Jackson, WD TI Compactness factors for rolled, stacked-screen regenerators SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 1873 EP 1878 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00331 ER PT S AU Shaaban, AH Salavani, R AF Shaaban, AH Salavani, R BE Chetty, PRK Jackson, WD TI Heat recovery of used petroleum, oil, and lubricants (POL) SO IECEC 96 - PROCEEDINGS OF THE 31ST INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE, VOLS 1-4 SE PROCEEDINGS OF THE INTERSOCIETY ENERGY CONVERSION ENGINEERING CONFERENCE (SERIES) LA English DT Proceedings Paper CT 31st Intersociety Energy Conversion Engineering Conference (IECEC 96) CY AUG 11-16, 1996 CL WASHINGTON, DC SP IEEE, Electron Devices Soc, IEEE, Aerosp Electr Syst Soc, Natl Capital Area Council C1 APPL RES ASSOCIATES INC,TYNDALL AFB,FL 32403. NR 0 TC 1 Z9 1 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1089-3547 BN 0-7803-3547-3 J9 PROC IECEC PY 1996 BP 1950 EP 1955 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA BG49K UT WOS:A1996BG49K00343 ER PT B AU Bohenek, BJ Ruff, DA Raquet, JF AF Bohenek, BJ Ruff, DA Raquet, JF GP IEEE TI High rate time-space-position-information for high dynamic GPS integrated navigation SO IEEE 1996 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1996 Position Location and Navigation Symposium (PLANS 96) CY APR 22-26, 1996 CL ATLANTA, GA SP IEEE, Aerosp & Electr Syst Soc C1 746 TEST SQUADRON,HOLLOMAN AFB,NM. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3085-4 PY 1996 BP 56 EP 62 PG 7 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF52A UT WOS:A1996BF52A00011 ER PT B AU Jokerst, S Keith, J Smith, L Lawrence, R Lupash, L Feldmann, M AF Jokerst, S Keith, J Smith, L Lawrence, R Lupash, L Feldmann, M GP IEEE TI NaVTEL - A powerful analysis tool in the process of validating C-130 SCNS GPS/INS integration design SO IEEE 1996 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1996 Position Location and Navigation Symposium (PLANS 96) CY APR 22-26, 1996 CL ATLANTA, GA SP IEEE, Aerosp & Electr Syst Soc C1 746TH TEST SQUADRON,HOLLOMAN AFB,NM. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3085-4 PY 1996 BP 63 EP 66 PG 4 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF52A UT WOS:A1996BF52A00012 ER PT B AU Bishop, G Mazzella, A Holland, E Rao, S AF Bishop, G Mazzella, A Holland, E Rao, S GP IEEE TI Algorithms that use the ionosphere to control GPS errors SO IEEE 1996 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1996 Position Location and Navigation Symposium (PLANS 96) CY APR 22-26, 1996 CL ATLANTA, GA SP IEEE, Aerosp & Electr Syst Soc C1 USAF,PHILLIPS LAB,BEDFORD,MA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3085-4 PY 1996 BP 145 EP 152 PG 8 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF52A UT WOS:A1996BF52A00023 ER PT B AU Corrie, L AF Corrie, L GP IEEE TI Simulating the GPS constellation for high fidelity operator training SO IEEE 1996 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1996 Position Location and Navigation Symposium (PLANS 96) CY APR 22-26, 1996 CL ATLANTA, GA SP IEEE, Aerosp & Electr Syst Soc C1 USAF,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3085-4 PY 1996 BP 222 EP 229 PG 8 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF52A UT WOS:A1996BF52A00035 ER PT B AU Kaspar, BM Redshaw, MC AF Kaspar, BM Redshaw, MC GP IEEE TI Results of demonstrating the GPS guidance package integrated in an Army Fire Support Team Vehicle SO IEEE 1996 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1996 Position Location and Navigation Symposium (PLANS 96) CY APR 22-26, 1996 CL ATLANTA, GA SP IEEE, Aerosp & Electr Syst Soc C1 USAF,ADV RES PROJECTS AGCY,WASHINGTON,DC 20330. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3085-4 PY 1996 BP 407 EP 414 PG 8 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF52A UT WOS:A1996BF52A00061 ER PT B AU Knoedler, AJ Bailey, WD McClintock, BH Harris, DA AF Knoedler, AJ Bailey, WD McClintock, BH Harris, DA GP IEEE TI Investigation of global positioning system use for air data system calibration SO IEEE 1996 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1996 Position Location and Navigation Symposium (PLANS 96) CY APR 22-26, 1996 CL ATLANTA, GA SP IEEE, Aerosp & Electr Syst Soc C1 USAF,TEST PILOT SCH,EDWARDS AFB,CA 93524. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3085-4 PY 1996 BP 559 EP 566 PG 8 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF52A UT WOS:A1996BF52A00082 ER PT B AU Lawrence, PJ Berarducci, MP AF Lawrence, PJ Berarducci, MP GP IEEE TI Navigation sensor, filter, and failure mode simulation results using the distributed Kalman filter simulator (DKFSIM) SO IEEE 1996 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1996 Position Location and Navigation Symposium (PLANS 96) CY APR 22-26, 1996 CL ATLANTA, GA SP IEEE, Aerosp & Electr Syst Soc C1 USAF,CAPT,WASHINGTON,DC 20330. NR 0 TC 4 Z9 4 U1 0 U2 4 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3085-4 PY 1996 BP 697 EP 710 PG 14 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF52A UT WOS:A1996BF52A00102 ER PT B AU McGrath, DT Pyati, VP AF McGrath, DT Pyati, VP GP IEEE TI Periodic structure reflection and transmission calculation using the hybrid finite element method SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM - 1996 DIGEST, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Antennas-and-Propagation-Society Symposium / USNC/URSI National Radio Science Meeting CY JUL 21-26, 1996 CL BALTIMORE, MD SP IEEE, Antennas & Propagat Soc, USNC URSI C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3217-2 PY 1996 BP 142 EP 145 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23E UT WOS:A1996BG23E00034 ER PT B AU Barnhart, GA Terzuoli, AJ Gerace, GC AF Barnhart, GA Terzuoli, AJ Gerace, GC GP IEEE TI Sensitivity of normal incidence scattering predictions to material characteristics SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM - 1996 DIGEST, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Antennas-and-Propagation-Society Symposium / USNC/URSI National Radio Science Meeting CY JUL 21-26, 1996 CL BALTIMORE, MD SP IEEE, Antennas & Propagat Soc, USNC URSI C1 USAF,INST TECHNOL,GRAD SCH ENGN,DAYTON,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3217-2 PY 1996 BP 458 EP 461 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23E UT WOS:A1996BG23E00109 ER PT B AU Floyd, VM Terzuoli, AJ Gerace, GC Auclair, PJ AF Floyd, VM Terzuoli, AJ Gerace, GC Auclair, PJ GP IEEE TI Application of response surface methodology to radar data compression SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM - 1996 DIGEST, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Antennas-and-Propagation-Society Symposium / USNC/URSI National Radio Science Meeting CY JUL 21-26, 1996 CL BALTIMORE, MD SP IEEE, Antennas & Propagat Soc, USNC URSI C1 USAF,INST TECHNOL,GRAD SCH ENGN,DAYTON,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3217-2 PY 1996 BP 596 EP 599 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23E UT WOS:A1996BG23E00142 ER PT B AU Wood, WD Pyati, VP AF Wood, WD Pyati, VP GP IEEE TI Scattering from a trough in a ground plane SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM - 1996 DIGEST, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Antennas-and-Propagation-Society Symposium / USNC/URSI National Radio Science Meeting CY JUL 21-26, 1996 CL BALTIMORE, MD SP IEEE, Antennas & Propagat Soc, USNC URSI C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3217-2 PY 1996 BP 1390 EP 1393 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23E UT WOS:A1996BG23E00328 ER PT B AU Kadrovach, BA Wailes, TS Terzuoli, AJ Gelosh, DS AF Kadrovach, BA Wailes, TS Terzuoli, AJ Gelosh, DS GP IEEE TI Codesign model for Xpatchf optimization SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM - 1996 DIGEST, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Antennas-and-Propagation-Society Symposium / USNC/URSI National Radio Science Meeting CY JUL 21-26, 1996 CL BALTIMORE, MD SP IEEE, Antennas & Propagat Soc, USNC URSI C1 USAF,INST TECHNOL,SCH ENGN,DAYTON,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3217-2 PY 1996 BP 1882 EP 1885 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23E UT WOS:A1996BG23E00442 ER PT J AU Stytz, MR Block, EG Soltz, BB Wilson, K AF Stytz, MR Block, EG Soltz, BB Wilson, K TI The synthetic BattleBridge: A tool for large-scale VEs SO IEEE COMPUTER GRAPHICS AND APPLICATIONS LA English DT Article ID FUZZY RP Stytz, MR (reprint author), USAF,INST TECHNOL,KELLY AFB,TX, USA. NR 13 TC 4 Z9 4 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0272-1716 J9 IEEE COMPUT GRAPH JI IEEE Comput. Graph. Appl. PD JAN PY 1996 VL 16 IS 1 BP 16 EP 26 DI 10.1109/38.481562 PG 11 WC Computer Science, Software Engineering SC Computer Science GA TM461 UT WOS:A1996TM46100006 ER PT J AU Ito, C Jenkins, T Trombley, G Lee, R Reston, R Havasy, C Johnson, B Eppers, C AF Ito, C Jenkins, T Trombley, G Lee, R Reston, R Havasy, C Johnson, B Eppers, C TI High-temperature microwave characteristics of GaAs MESFET devices with AlAs buffer layers SO IEEE ELECTRON DEVICE LETTERS LA English DT Article AB AlAs buffers used to reduce the leakage current of high-temperature GaAs MESFET devices are shown to have no detrimental effect on the microwave performance measured to 200 degrees C. The f(t) values decrease with increasing temperature, but do not appear to be influenced by the AlAs buffer. The f(max) values also decrease with increasing temperature; however, they are improved with increasing AlAs buffer thickness due to a concomitant decrease in the device output conductance. At 200 degrees C ambient temperature, f(t) and f(max) values of 14.5 GHz and 36.7 GHz, respectively, were measured. C1 USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Ito, C (reprint author), NE CONSORTIUM ENGN EDUC,PORT ROYAL,VA 22535, USA. NR 17 TC 9 Z9 9 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD JAN PY 1996 VL 17 IS 1 BP 16 EP 18 DI 10.1109/55.475563 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA TL854 UT WOS:A1996TL85400006 ER PT J AU Sewell, J Liou, LL Barlage, D Barrette, J Bozada, C Dettmer, R Fitch, R Jenkins, T Lee, R Mack, M Trombley, G Watson, P AF Sewell, J Liou, LL Barlage, D Barrette, J Bozada, C Dettmer, R Fitch, R Jenkins, T Lee, R Mack, M Trombley, G Watson, P TI Thermal characterization of thermally-shunted heterojunction bipolar transistors SO IEEE ELECTRON DEVICE LETTERS LA English DT Article AB Heterojunction Bipolar Transistors (HBT's) are potentially useful in a number of microwave applications, but they are severely limited by a current distribution instability caused by electrothermal interaction and the use of a low thermal conductivity substrate. A novel thermal management technique called ''thermal shunting'' has been developed to reduce thermal resistance and junction temperature non-uniformity. Thermal resistance measurements for thermally-shunted devices are presented. Specific thermal resistance measurements as low as 2.6 x 10(-4) degrees C-cm(2)/W (147 degrees C/W at 0.1 W for a device with a 177 mu m(2) emitter area) have been obtained. Thermal resistance values obtained for thermally-shunted HBT's are substantially lower than those reported for conventional HBT's. RP Sewell, J (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 9 Z9 9 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0741-3106 J9 IEEE ELECTR DEVICE L JI IEEE Electron Device Lett. PD JAN PY 1996 VL 17 IS 1 BP 19 EP 21 DI 10.1109/55.475564 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA TL854 UT WOS:A1996TL85400007 ER PT B AU Reid, JR Bright, VM Comtois, JH AF Reid, JR Bright, VM Comtois, JH GP IEEE TI A surface micromachined rotating micro-mirror normal to the substrate SO IEEE/LEOS 1996 SUMMER TOPICAL MEETINGS - ADVANCED APPLICATIONS OF LASERS IN MATERIALS AND PROCESSING, DIGEST LA English DT Proceedings Paper CT IEEE/LEOS 1996 Summer Topical Meeting - Advanced Applications of Lasers in Materials Processing CY AUG 05-09, 1996 CL KEYSTONE, CO SP IEEE, Lasers & Electr Opt Soc, Engn Fdn C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3175-3 J9 IEEE LEOS ANN MTG PY 1996 BP C39 EP C40 PG 2 WC Engineering, Manufacturing; Materials Science, Multidisciplinary; Optics SC Engineering; Materials Science; Optics GA BG16J UT WOS:A1996BG16J00131 ER PT J AU Davidovitz, M AF Davidovitz, M TI Wide-band waveguide-to-microstrip transition and power divider SO IEEE MICROWAVE AND GUIDED WAVE LETTERS LA English DT Article AB A waveguide-to-microstrip transition is proposed, modeled, and validated through a prototypical design, The transition is shown to possess characteristics required in many high-frequency systems, namely wide-band response, ease of construction and hermetic isolation of the two transmission media, Implementation in a waveguide-to microstrip power divider (three-port) form is detailed here, but other feasible variants are mentioned, Favorable agreement between the proposed model and measured results is observed. RP Davidovitz, M (reprint author), USAF, ROME LAB, BEDFORD, MA 01731 USA. NR 8 TC 23 Z9 23 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 1051-8207 J9 IEEE MICROW GUIDED W JI IEEE Microw. Guided Wave Lett. PD JAN PY 1996 VL 6 IS 1 BP 13 EP 15 DI 10.1109/75.482056 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA TN382 UT WOS:A1996TN38200005 ER PT J AU Davidovitz, M AF Davidovitz, M TI A low-loss thermal isolator for waveguides and coaxial transmission lines SO IEEE MICROWAVE AND GUIDED WAVE LETTERS LA English DT Article AB A low-loss element insertable into microwave coaxial transmission lines and waveguides is designed to provide a thermal isolation barrier at the point of insertion. RP Davidovitz, M (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 2 TC 5 Z9 6 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1051-8207 J9 IEEE MICROW GUIDED W JI IEEE Microw. Guided Wave Lett. PD JAN PY 1996 VL 6 IS 1 BP 25 EP 27 DI 10.1109/75.482060 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA TN382 UT WOS:A1996TN38200009 ER PT J AU White, GB Fisch, EA Pooch, UW AF White, GB Fisch, EA Pooch, UW TI Cooperating security managers: A peer-based intrusion detection system SO IEEE NETWORK LA English DT Article C1 TEXAS A&M UNIV,COLLEGE STN,TX 77843. RP White, GB (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. RI White, Gregory/K-6481-2013 NR 11 TC 65 Z9 79 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0890-8044 J9 IEEE NETWORK JI IEEE Netw. PD JAN-FEB PY 1996 VL 10 IS 1 BP 20 EP 23 DI 10.1109/65.484228 PG 4 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA TU250 UT WOS:A1996TU25000003 ER PT J AU Libby, EW Maybeck, PS AF Libby, EW Maybeck, PS TI Sequence comparison techniques for multisensor data fusion and target recognition SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Article AB A new class of techniques for multisensor fusion and target recognition is proposed using sequence comparison by dynamic programming and multiple model estimation The objective is to fuse information on the kinematic state and ''nonkinematic'' signature of unclassified targets, assessing the joint likelihood of all observed events for recognition Relationships are shown to previous efforts in pattern recognition and state estimation This research applies ''classical'' speech processing-related and other sequence comparison methods to moving target recognition, extends the efforts of previous researchers through improved fusion with kinematic information, relates the proposed techniques to Bayesian theory, and applies parameter identification methods to target recognition for improved understanding of the subject in general. The proposed techniques are evaluated and compared,vith existing approaches using the method of generalized ambiguity functions, which leads to a form of Cramer-Rao lower bound for target recognition. RP Libby, EW (reprint author), USAF,INST TECHNOL,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 33 TC 7 Z9 9 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD JAN PY 1996 VL 32 IS 1 BP 52 EP 65 DI 10.1109/7.481249 PG 14 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA TQ352 UT WOS:A1996TQ35200006 ER PT J AU Mills, RF Prescott, GE AF Mills, RF Prescott, GE TI Comparison of various radiometer detection models SO IEEE TRANSACTIONS ON AEROSPACE AND ELECTRONIC SYSTEMS LA English DT Letter AB Several detectability models for the wideband radiometer have been published which allow easy calculation of the required input signal-to-noise ratio (SNR) for a given performance level. These models were developed because the exact solutions are intractable and must be evaluated using detection curves or numerical methods. The derivations of six common radiometer models are examined and comparisons for a variety of scenarios are provided. When possible, exact solutions are also compared. Results indicate that these models agree to within 0.5 dB for most cases of interest involving large time-bandwidth signals. C1 UNIV KANSAS,DEPT ELECT ENGN & COMP SCI,LAWRENCE,KS 66045. RP Mills, RF (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,BLDG 640,SUITE 218,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 49 Z9 51 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9251 J9 IEEE T AERO ELEC SYS JI IEEE Trans. Aerosp. Electron. Syst. PD JAN PY 1996 VL 32 IS 1 BP 467 EP 473 DI 10.1109/7.481289 PG 7 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA TQ352 UT WOS:A1996TQ35200046 ER PT J AU Liou, JJ Jenkins, TJ Liou, LL Neidhard, R Barlage, DW Fitch, R Barrette, JP Mack, M Bozada, CA Lee, RHY Dettmer, RW Sewell, JS AF Liou, JJ Jenkins, TJ Liou, LL Neidhard, R Barlage, DW Fitch, R Barrette, JP Mack, M Bozada, CA Lee, RHY Dettmer, RW Sewell, JS TI Bias, frequency, and area dependencies of high frequency noise in AlGaAs/GaAs HBT's SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Article ID HETEROJUNCTION BIPOLAR-TRANSISTORS; RESISTANCE; MODEL AB The noise figure of the heterojunction bipolar transistor (HBT) in the microwave frequency range is studied, and an improved physical noise model is developed, Unlike the conventional high frequency noise model, which considers only the bias current dependence, the present model includes both the effects of voltage and current on the noise behavior, In addition, the frequency- and area-dependent natures of the HBT noise at very high frequencies are incorporated in the model. It is found that the voltage dependence of the high frequency noise in the HBT results from the self-heating effect which gives rise to a higher HBT lattice temperature than the ambient temperature. Also, the free-carrier transport delay time must be considered to properly model the frequency dependence of noise since the inverse of this time is comparable with the frequency, Furthermore, the area dependence of noise is dominated bg changes in the base resistance and emitter-base junction capacitance Results for the minimum noise factor calculated from the model compare favorably with those obtained ii-om measurements. C1 USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Liou, JJ (reprint author), UNIV CENT FLORIDA,DEPT ELECT & COMP ENGN,ORLANDO,FL 32816, USA. NR 19 TC 8 Z9 8 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9383 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD JAN PY 1996 VL 43 IS 1 BP 116 EP 122 DI 10.1109/16.477601 PG 7 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA TN386 UT WOS:A1996TN38600017 ER PT J AU Xia, XG Geronimo, JS Hardin, DP Suter, BW AF Xia, XG Geronimo, JS Hardin, DP Suter, BW TI Design of prefilters for discrete multiwavelet transforms SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Article ID WAVELET TRANSFORM; ALGORITHMS AB The pyramid algorithm for computing single wavelet transform coefficients is well known. The pyramid algorithm can be implemented by using tree-structured multirate filter banks;, In this paper, we propose a general algorithm to compute multiwavelet transform coefficients by adding proper premultirate filter banks before the vector filter banks that generate multiwavelets. The proposed algorithm can be thought of as a discrete vector-valued wavelet transform for certain discrete-time vector-valued signals, The proposed algorithm can be also thought of as a discrete multiwavelet transform for discrete-time signals. We then present some numerical experiments to illustrate the performance of the algorithm, which indicates that the energy compaction for discrete multiwavelet transforms may be better than the one for conventional discrete wavelet transforms. C1 USAF, INST TECHNOL, DEPT ELECT & COMP ENGN, WRIGHT PATTERSON AFB, OH 45433 USA. GEORGIA INST TECHNOL, DEPT MATH, ATLANTA, GA 30332 USA. RP Xia, XG (reprint author), HUGHES RES LABS, INFORMAT SCI LAB, M-S RL96, MALIBU, CA 90265 USA. RI Hardin, Douglas/C-3386-2013 OI Hardin, Douglas/0000-0003-0867-2146 NR 35 TC 221 Z9 294 U1 0 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD JAN PY 1996 VL 44 IS 1 BP 25 EP 35 DI 10.1109/78.482009 PG 11 WC Engineering, Electrical & Electronic SC Engineering GA TV806 UT WOS:A1996TV80600003 ER PT B AU Franza, RM Gaimon, C AF Franza, RM Gaimon, C GP IEEE ENGN MANAGEMENT SOC TI Investment in facility flexibility under uncertain competitor market entry SO IEMC 96 PROCEEDINGS - MANAGING VIRTUAL ENTERPRISES: A CONVERGENCE OF COMMUNICATIONS, COMPUTING, AND ENERGY TECHNOLOGIES LA English DT Proceedings Paper CT International Conference on Engineering and Technology Management - Managing Virtual Enterprises: A Convergence of Communications, Computing, and Energy Technologies (IEMC 96) CY AUG 18-20, 1996 CL VANCOUVER, CANADA SP IEEE, Engn Management Soc C1 USAF,INST TECHNOL,GRAD SCH LOGIST & ACQUIST MANAGEMENT,LAS,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 1 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3552-X PY 1996 BP 153 EP 157 DI 10.1109/IEMC.1996.547806 PG 5 WC Computer Science, Information Systems; Engineering, Industrial; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BG27Y UT WOS:A1996BG27Y00027 ER PT B AU Pepin, MP Sacchini, JJ AF Pepin, MP Sacchini, JJ GP IEEE TI Preserving exponentials in synthetic aperture radar data SO IGARSS '96 - 1996 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM: REMOTE SENSING FOR A SUSTAINABLE FUTURE, VOLS I - IV LA English DT Proceedings Paper CT 1996 International Geoscience and Remote Sensing Symposium (IGARSS 96) - Remote Sensing for a Sustainable Future CY MAY 21-31, 1996 CL LINCOLN, NE SP IEEE, Geosci & Remote Sensing Soc, Univ Nebraska, Lincoln, NASA, NOAA, USN, Off Naval Res, US Natl Comm Union Radiosci Int, Canon Modern Methods Inc, Univ Nebraska Lincoln, Ctr Adv Land Management Informat Technol, Univ Nebraska Lincoln, Ctr Commun & Informat Sci, Univ Nebraska Lincoln, Ctr Electro Opt, Univ Nebraska Lincoln, Ctr Laser Anal Studies Trace Gas Dynam, Centurion Int Inc, Univ Nebraska Lincoln, Coll Engn & Technol, Univ Nebraska Lincoln, Dept Elect Engn, ERDAS Inc, Univ Nebraska Lincoln, High Plains Climate Ctr, Li Cor Inc, US Geol Survey EROS Data Ctr C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,AFIT,ENG,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3069-2 J9 INT GEOSCI REMOTE SE PY 1996 BP 54 EP 56 PG 3 WC Remote Sensing SC Remote Sensing GA BF96U UT WOS:A1996BF96U00018 ER PT S AU Rea, LS AF Rea, LS BE Gaskill, DK Brandt, CD Nemanich, RJ TI SiC semiconductor applications - An air force perspective SO III-NITRIDE, SIC AND DIAMOND MATERIALS FOR ELECTRONIC DEVICES SE MATERIALS RESEARCH SOCIETY CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Symposium on III-Nitride, SiC and Diamond Materials for Electronic Devices CY APR 08-12, 1996 CL SAN FRANCISCO, CA AB The Department of Defense (DoD) is investing in the development of Silicon Carbide (SiC) for a wide range of applications. Over the past year, SiC technology has demonstrated excellent device performance results for power devices, high temperature electronic devices and microwave devices. The materials growth and processing technology for SiC is now at a level of sufficient maturity to support substantial device development efforts. While there is still considerable materials and device research required for SiC to achieve it's full potential, the fundamental technology has been proven for several critical applications. A perspective on some Air Force device performance requirements will be presented. The status of SiC materials development, material limits to advances in device performance and issues relating to supporting technology will also be discussed. RP Rea, LS (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,3005 P ST STE 6,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 4 Z9 4 U1 0 U2 2 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0886-7860 BN 1-55899-326-6 J9 MAT RES S C PY 1996 VL 423 BP 3 EP 7 PG 5 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Materials Science, Coatings & Films SC Materials Science GA BG72B UT WOS:A1996BG72B00001 ER PT S AU Scofield, J Dunn, M Reinhardt, K Yeo, YK Hengehold, R AF Scofield, J Dunn, M Reinhardt, K Yeo, YK Hengehold, R BE Gaskill, DK Brandt, CD Nemanich, RJ TI Defect dominant junction characteristics of 4H-SiC p(+)/n diodes SO III-NITRIDE, SIC AND DIAMOND MATERIALS FOR ELECTRONIC DEVICES SE MATERIALS RESEARCH SOCIETY CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Symposium on III-Nitride, SiC and Diamond Materials for Electronic Devices CY APR 08-12, 1996 CL SAN FRANCISCO, CA AB Forward and reverse current-voltage (I-V-T) measurements of MOCVD grown 4H-SiC p(+)/n diodes are compared to classical recombination-generation theory over the temperature range of 100 to 750 K. The forward bias data indicate that the I-V characteristics of the well-behaved devices follow a classical recombination dominant transport mechanism. Ideality factors were determined to be in the range of 1.85 to 2.09, and the forward activation energy found to be E(A)=1.56 eV compared to a nearly ideal value of 1.6 eV. A majority of the devices tested under forward bias conditions were, however, found to exhibit significant leakage current components due to tunneling at forward biases of up to 2.2 V for turn-on voltages in the 2.5 to 3.0 range. Deep level transient spectroscopy (DLTS) was also performed on the diode structures over the same wide temperature range, and the results were correlated to those obtained from reverse I-V-T and C-V-T characterization. Deep level defects at energies between 200 and 856 meV were identified from the DLTS data, and these levels are believed to be responsible for the tunneling dominant current conduction. Intrinsic deep levels, common to all devices tested, are emphasized and suggested as possible reverse bias tunneling paths for breakdown to explain the lack of an avalanche mechanism in all of the 4H-SiC diodes tested. RP Scofield, J (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 6 Z9 6 U1 0 U2 2 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0886-7860 BN 1-55899-326-6 J9 MAT RES S C PY 1996 VL 423 BP 57 EP 62 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Materials Science, Coatings & Films SC Materials Science GA BG72B UT WOS:A1996BG72B00008 ER PT S AU Evwaraye, AO Smith, RS Mitchel, WC Roth, MD AF Evwaraye, AO Smith, RS Mitchel, WC Roth, MD BE Gaskill, DK Brandt, CD Nemanich, RJ TI Impurity conduction in n-type 4H-SiC SO III-NITRIDE, SIC AND DIAMOND MATERIALS FOR ELECTRONIC DEVICES SE MATERIALS RESEARCH SOCIETY CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Symposium on III-Nitride, SiC and Diamond Materials for Electronic Devices CY APR 08-12, 1996 CL SAN FRANCISCO, CA AB Impurity conduction ( or hopping conduction) has been observed in the more heavily n-type 4H-SiC samples by both temperature dependent resistivity measurements and thermal admittance spectroscopy. The measured activation energiese(epsilon)3 for hopping were 4-5 meV and 2.3-3.0 meV respectively. No evidence of hopping conduction was seen by either method in the sample where N-D-N-A < 10(18) cm(-3). The thermal admittance spectrum of the lightly n-type sample showed the two nitrogen levels at 53 and 100 meV. RP Evwaraye, AO (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0886-7860 BN 1-55899-326-6 J9 MAT RES S C PY 1996 VL 423 BP 637 EP 642 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Materials Science, Coatings & Films SC Materials Science GA BG72B UT WOS:A1996BG72B00098 ER PT S AU Smith, SR Evwaraye, AO Mitchel, WC AF Smith, SR Evwaraye, AO Mitchel, WC BE Gaskill, DK Brandt, CD Nemanich, RJ TI Thermal and optical admittance spectroscopy studies of defects in 15R-SiC SO III-NITRIDE, SIC AND DIAMOND MATERIALS FOR ELECTRONIC DEVICES SE MATERIALS RESEARCH SOCIETY CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Symposium on III-Nitride, SiC and Diamond Materials for Electronic Devices CY APR 08-12, 1996 CL SAN FRANCISCO, CA AB Nitrogen is the common n-type dopant of the various polytypes of silicon carbide. The nitrogen levels in 4H-SiC (at E(C)-53 meV and E(C)-100 meV) and in 6H-SiC (at E(C)-89 meV, E(C)-100 meV, and E(C)-125 meV) have been studied in detail by temperature dependent Hall effect measurements, electron spin resonance (ESR), and thermal admittance spectroscopy. Until now, such detailed studies of the nitrogen levels in 15R-SiC have not been carried out. Lely-grown 15R samples were used in these studies. The net carrier concentrations (N-D-N-A), determined by room temperature CV measurements, ranged from 1 x 10(18) 3 x 10(18) cm(-3). The nitrogen levels in 15R-SiC were studied using thermal admittance spectroscopy. Optical admittance spectroscopy (OAdS) was used to study the deeper defects in this polytype. It was found that optical transitions to the conduction band were inhibited in the heavily doped material. RP Smith, SR (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLPO,3005 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0886-7860 BN 1-55899-326-6 J9 MAT RES S C PY 1996 VL 423 BP 705 EP 709 PG 5 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Materials Science, Coatings & Films SC Materials Science GA BG72B UT WOS:A1996BG72B00109 ER PT B AU Hugo, RJ McMackin, L AF Hugo, RJ McMackin, L BE Dainty, JC Bissonnette, LR TI Conditionally sampled two-dimensional optical wavefront measurements in the near-nozzle region of a heated axisymmetric jet SO IMAGE PROPAGATION THROUGH THE ATMOSPHERE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Image Propagation Through the Atmosphere CY AUG 07-09, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE axisymmetric jet; conditional sampling; coherent structures; fluid-optic interactions C1 USAF,PHILLIPS LAB,LIMS,KIRTLAND AFB,NM 87117. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2216-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2828 BP 50 EP 61 DI 10.1117/12.254173 PG 12 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BG61P UT WOS:A1996BG61P00006 ER PT B AU Silbaugh, EE Welsh, BM Roggemann, MC AF Silbaugh, EE Welsh, BM Roggemann, MC BE Dainty, JC Bissonnette, LR TI Characterization of atmospheric turbulence phase statistics using wavefront slope measurements SO IMAGE PROPAGATION THROUGH THE ATMOSPHERE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Image Propagation Through the Atmosphere CY AUG 07-09, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE atmospheric optics; wave front sensing; turbulence; remote sensing; adaptive optics C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2216-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2828 BP 210 EP 220 DI 10.1117/12.254169 PG 11 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BG61P UT WOS:A1996BG61P00021 ER PT B AU Gardner, PJ Roggemann, MC Welsh, BM AF Gardner, PJ Roggemann, MC Welsh, BM BE Dainty, JC Bissonnette, LR TI Quantification of frozen flow properties for a turbulent mixing layer of Helium and Nitrogen gas SO IMAGE PROPAGATION THROUGH THE ATMOSPHERE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Image Propagation Through the Atmosphere CY AUG 07-09, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE aero-optics; frozen flow; Taylor's hypothesis; turbulence; wave front sensor C1 USAF,INST TECHNOL,GRAD SCH ENGN,DEPT ENGN PHYS,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 2 Z9 2 U1 2 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2216-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2828 BP 256 EP 265 DI 10.1117/12.254174 PG 10 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BG61P UT WOS:A1996BG61P00025 ER PT B AU McCrae, KA Roggemann, MC Welsh, BM AF McCrae, KA Roggemann, MC Welsh, BM BE Dainty, JC Bissonnette, LR TI Optimum exposure time for speckle imaging through the atmosphere using the bispectrum technique SO IMAGE PROPAGATION THROUGH THE ATMOSPHERE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Image Propagation Through the Atmosphere CY AUG 07-09, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE atmospheric optics; speckle imaging; bispectrum; optimum exposure time C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2216-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2828 BP 397 EP 408 DI 10.1117/12.254188 PG 12 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BG61P UT WOS:A1996BG61P00038 ER PT B AU Eismann, MT Schwartz, CR Cederquist, JN Hackwell, JA Huppi, RJ AF Eismann, MT Schwartz, CR Cederquist, JN Hackwell, JA Huppi, RJ BE Descour, MR Mooney, JM TI Comparison of infrared imaging hyperspectral sensors for military target detection applications SO IMAGING SPECTROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Imaging Spectrometry II CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing AB Recent studies have demonstrated the potential for exploiting spectral discriminates in the thermal infrared for day/night surveillance and targeting of military targets in situations where the thermal contrast is low. Although the spectral discriminates have been found to be very subtle in most cases, good detection performance is achievable due to the generally high band-to-band spectral correlation of the background. This, however, presents a challenging set of requirements for infrared multispectral and hyperspectral sensors designed for this application. In this paper, we examine the merits and limitations of various design approaches, including imaging Michelson interferometers, dispersive spectrometers, and spatial Fourier transform spectrometers. The comparison is based on detailed sensor modeling as well as laboratory and field measurements of state-of-the-art instruments: a dispersive spectrometer and an imaging Fourier transform spectrometer. The primary emphasis of this paper is the design of a hyperspectral sensor for tower-based and subsequent airborne data collection. Implications for operational multispectral sensor designs are also given. RP Eismann, MT (reprint author), USAF,WRIGHT LAB,3109 P ST,BLDG 622,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 12 Z9 12 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2207-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2819 BP 91 EP 101 DI 10.1117/12.258056 PG 11 WC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy SC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy GA BG81W UT WOS:A1996BG81W00010 ER PT B AU Vigil, ML Witte, DJ LeVan, PD Wallentine, PJ Briscoe, DE Anderson, DL AF Vigil, ML Witte, DJ LeVan, PD Wallentine, PJ Briscoe, DE Anderson, DL BE Descour, MR Mooney, JM TI Sensor suite for the Advanced Electro-Optical System (AEOS) 3.6-meter telescope SO IMAGING SPECTROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Imaging Spectrometry II CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE electro-optical sensors; visible; infrared; LWIR; adaptive optics; radiometer; radiometry; imagery; telescope; observatory AB The Phillips Laboratory Advanced Electro-Optical System (AEOS) comprises an observatory facility, a united computer network, a 3.63 meter telescope, and an associated sensor suite that will become operational beginning in 1997. Space Object Identification (SOI) is the primary mission for AEOS; however, astronomical applications and other visiting experiments are readily supported by the system design. The AEOS sensor suite functions derive from Air Force Space Command requirements, and incorporate high resolution imagery and multi-band radiometry performed over a broad range of wavelengths. Data collection capabilities are optimized for the rapid temporal variations in observed target brightness that arise from both intrinsic target variability and changing atmospheric characteristics during the course of an observation. Multi-spectral photometry/radiometry over the 0.4-23 mu m spectral region constitutes the principal observational technique for spatially unresolved targets. Thermal infrared wavelengths, i.e., 4-23 mu m, permit observation of targets that are in the shadow of the earth, and provide temperature measurements on all targets. High resolution visible to near-infrared imagery (0.7-1.0 mu m), approaching the diffraction limit, is collected on sunlit targets via an adaptive optics (A/O) system. Simultaneous LWIR(8-13 mu m) imagery is obtained with an infrared sensor that shares the high-resolution NIR imager's field of view through a dichroic beamsplitter. In order to minimize the thermal background, the LWIR imager is located close to the telescope, upstream of the A/O system. The LWIR resolution approaches the diffraction limit, due to the decreased impact of atmospheric turbulence at those wavelengths. RP Vigil, ML (reprint author), USAF,PHILLIPS LAB,LASERS & IMAGING DIRECTORATE,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 0 TC 3 Z9 3 U1 2 U2 5 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2207-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2819 BP 151 EP 169 DI 10.1117/12.258062 PG 19 WC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy SC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy GA BG81W UT WOS:A1996BG81W00016 ER PT B AU Lyons, DM Whitcomb, K AF Lyons, DM Whitcomb, K BE Descour, MR Mooney, JM TI Characterization of the DOIS prototype: A diffractive optic image spectrometer SO IMAGING SPECTROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Imaging Spectrometry II CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE diffractive optic; chromatic aberration; visible spectrometer; imaging spectrometer AB A diffractive optic image spectrometer has been designed(1) and prototyped. Three dimensional spectral/spatial DOE imaging theory has been developed to simulate DOIS performance. The system's point spread function has been theoretically modeled and experimentally determined. The prototype has been characterized and demonstrated with a variety of targets. Three deconvolution algorithms have been implemented with the experimental 3D OTF and applied to recorded target images. The results shown demonstrate the high resolving power available with this approach. RP Lyons, DM (reprint author), USAF,ROME LAB,GRIFFISS AFB,NY 13440, USA. NR 0 TC 3 Z9 3 U1 1 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2207-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2819 BP 206 EP 217 DI 10.1117/12.258067 PG 12 WC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy SC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy GA BG81W UT WOS:A1996BG81W00020 ER PT B AU Brodzik, AK Mooney, JM An, M AF Brodzik, AK Mooney, JM An, M BE Descour, MR Mooney, JM TI Image restoration by convex projections: Application to image spectrometry SO IMAGING SPECTROMETRY II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Imaging Spectrometry II CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE Gerchberg-Papoulis; convex projections; image restoration; spectrometry; infrared; iterative algorithms AB We present a new algorithm for image restoration with application to image spectrometry, combining two radically different techniques: the singular value decomposition (SVD) and the method of projections onto convex sets (POCS). The SVD technique is used to obtain an initial estimate of the unknown image and to establish correspondence between the missing data and the spectral description of the image. The iterative method of cons ex projections is then applied to the estimate, regaining the missing data by enforcing a sequence of constraints on the reconstructed object. We report results of investigations of the SVD-POCS method and demonstrate that the new algorithm leads to significant improvements in the recovered image. RP Brodzik, AK (reprint author), USAF,ROME LAB,HANSCOM AFB,MA 01731, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2207-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2819 BP 231 EP 242 DI 10.1117/12.258069 PG 12 WC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy SC Instruments & Instrumentation; Remote Sensing; Optics; Spectroscopy GA BG81W UT WOS:A1996BG81W00023 ER PT B AU Siler, D Demoret, KB AF Siler, D Demoret, KB BE Crowe, CR TI Variable stiffness mechanisms with SMA actuators SO INDUSTRIAL AND COMMERCIAL APPLICATIONS OF SMART STRUCTURES TECHNOLOGIES - SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Smart Structures and Materials 1996 Conference - Industrial and Commercial Applications of Smart Structures Technologies CY FEB 27-29, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Res Off, ARPA, Boeing Def & Space Grp, ASAF Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE airplane; mechanism; shape memory alloy; smart structure; spring; stiffness; strut; variable; wing C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. OI Demoret, Kimberly/0000-0003-1478-6334 NR 0 TC 9 Z9 9 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2096-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2721 BP 427 EP 435 DI 10.1117/12.239158 PG 9 WC Engineering, Aerospace; Engineering, Biomedical; Engineering, Mechanical; Materials Science, Ceramics; Materials Science, Composites; Optics SC Engineering; Materials Science; Optics GA BF61D UT WOS:A1996BF61D00040 ER PT B AU Banaszak, D AF Banaszak, D GP INST ENVIRONM SCI TI Processing vibration and acoustic data from a digital recorder SO INSTITUTE OF ENVIRONMENTAL SCIENCES 1996 PROCEEDINGS - PRODUCT RELIABILITY DESIGN, TEST, AND EVALUATION LA English DT Proceedings Paper CT 42nd Annual Technical of the Institute-of-Environmental-Sciences on Expanding Our Technical Excellence Through Education CY MAY 12-16, 1996 CL ORLANDO, FL SP Inst Environm Sci DE dynamic measurements; digital tape recorders; data acquisition; data analysis C1 USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,STRUCT DIV,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST ENVIRONMENTAL SCIENCES PI MT PROSPECT PA 940 E NORTHWEST HIGHWAY, MT PROSPECT, IL 60056 BN 1-877862-52-5 PY 1996 BP 175 EP 181 PG 7 WC Acoustics; Environmental Sciences SC Acoustics; Environmental Sciences & Ecology GA BF95Q UT WOS:A1996BF95Q00023 ER PT J AU Shute, VJ GawlickGrendell, LA Young, RK Burnham, CA AF Shute, VJ GawlickGrendell, LA Young, RK Burnham, CA TI An experiential system for learning probability: Stat Lady description and evaluation SO INSTRUCTIONAL SCIENCE LA English DT Article AB This paper describes a computer-based instructional system called Stat Lady, and reports the results of an evaluation study that tested the efficacy of learning probability from this program in relation to a traditional Lecture and a no-treatment Control group. Results showed that both treatment groups learned significantly more than the Control group, yet there was no difference between the two treatment groups in outcome performance after three hours of instruction. This was viewed as encouraging because: (a) due to sampling error, students assigned to the Stat Lady condition were at a disadvantage, scoring about 20 points less on the quantitative SAT measure compared to the Lecture group, and about 25 points less than the Control group, (b) the lecture constituted a more familiar learning environment for these subjects, and (c) the professor administering the Lecture had more than 20 years experience teaching this subject matter, while this was Stat Lady's first teaching assignment. We also found a significant aptitude-treatment interaction where high-aptitude subjects learned more from Stat Lady than from the Lecture environment, but for low-aptitude subjects, there was no difference in learning outcome by condition. Implications of these findings will be discussed in relation to future computer-based instructional research. C1 GALAXY SCI INC,PLEASANTVILLE,NJ. UNIV TEXAS,AUSTIN,TX 78712. RP Shute, VJ (reprint author), ARMSTRONG LAB,BROOKS AFB,TX, USA. NR 16 TC 10 Z9 10 U1 1 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0020-4277 J9 INSTR SCI JI Instr. Sci. PD JAN PY 1996 VL 24 IS 1 BP 25 EP 46 DI 10.1007/BF00156002 PG 22 WC Education & Educational Research; Psychology, Educational SC Education & Educational Research; Psychology GA UH733 UT WOS:A1996UH73300003 ER PT B AU Spencer, TA Stump, MD Hendricks, KJ AF Spencer, TA Stump, MD Hendricks, KJ BE Brandt, HE TI Investigation of lower order mode suppression in a high current, high voltage Gyro-BWO experiment SO INTENSE MICROWAVE PULSES IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Intense Microwave Pulses IV CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, Rome Lab DE gyrotron; Gyrotron Backward Wave Oscillator; High Power Microwave; frequency tunable; Gyro-BWO; electron cyclotron resonance; HFSS; High Frequency Structure Simulator C1 USAF,PHILLIPS LAB,WSQN,KIRTLAND AFB,NM 87117. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2231-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2843 BP 24 EP 29 DI 10.1117/12.255398 PG 6 WC Optics SC Optics GA BG61C UT WOS:A1996BG61C00003 ER PT B AU Agee, FJ Calico, SE Hendricks, KJ Haworth, M Spencer, T Ralph, D Blankenship, E Clark, MC Lemke, RW AF Agee, FJ Calico, SE Hendricks, KJ Haworth, M Spencer, T Ralph, D Blankenship, E Clark, MC Lemke, RW BE Brandt, HE TI Pulse shortening in the magnetically insulated line oscillator (MILO) SO INTENSE MICROWAVE PULSES IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Intense Microwave Pulses IV CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, Rome Lab DE Magnetically Insulated Line Oscillator; cross field device; MILO; narrowband tubes; high power microwave sources; intense RF sources C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 4 Z9 5 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2231-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2843 BP 144 EP 152 DI 10.1117/12.255405 PG 9 WC Optics SC Optics GA BG61C UT WOS:A1996BG61C00018 ER PT B AU Englert, TJ Haworth, M Hendricks, K Lehr, FM Shiffler, D AF Englert, TJ Haworth, M Hendricks, K Lehr, FM Shiffler, D BE Brandt, HE TI High-power microwave field measurements using stark broadening SO INTENSE MICROWAVE PULSES IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Intense Microwave Pulses IV CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, Rome Lab DE Stark effect; high-power microwaves C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2231-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2843 BP 166 EP 171 DI 10.1117/12.255409 PG 6 WC Optics SC Optics GA BG61C UT WOS:A1996BG61C00021 ER PT B AU Agee, FJ Scholfield, DW Copeland, RP Martin, TH Carroll, JJ Mankowski, JJ Kristiansen, M Hatfield, LL AF Agee, FJ Scholfield, DW Copeland, RP Martin, TH Carroll, JJ Mankowski, JJ Kristiansen, M Hatfield, LL BE Brandt, HE TI A review of catastrophic electromagnetic breakdown for short pulse widths SO INTENSE MICROWAVE PULSES IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Intense Microwave Pulses IV CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, Rome Lab DE electrical breakdown; RF breakdown; high-power microwave; short pulse ultra-wide band; electrical discharge C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2231-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2843 BP 172 EP 182 DI 10.1117/12.255410 PG 11 WC Optics SC Optics GA BG61C UT WOS:A1996BG61C00022 ER PT J AU Chow, LC Zhong, JK Beam, JE AF Chow, LC Zhong, JK Beam, JE TI Thermal conductivity enhancement for phase change storage media SO INTERNATIONAL COMMUNICATIONS IN HEAT AND MASS TRANSFER LA English DT Article AB Thermal energy storage can be used as either a heat source or heat sink for spacecraft energy conversion and heat rejection systems. One major issue that needed to be addressed is that most phase-change materials (PCMs) with high energy storage density have an unacceptably low thermal conductivity. Two enhancement techniques are proposed in this paper. The baseline case utilizes LiH encapsulated in a thin SS304 container. The first enhancement technique uses LiH encapsulated in smaller containers of various shapes contained in a bigger cylindrical container filled with Li. The second enhancement technique focuses on a metal/phase-change material (M/PCM) composite. Specifically, 5% Ni is added uniformly to LiH so that the mixture has the same volume as the baseline storage unit. The enhancement techniques are analyzed numerically and their effectiveness is assessed for both constant surface heat flux and constant surface temperature conditions. Results shown include the amount of PCM melted as a function of time and the maximum temperature within the storage units. The M/PCM composite gives the best enhancement in thermal conductivity. C1 USAF,WRIGHT LAB,WL POO,WRIGHT PATTERSON AFB,OH 45433. RP Chow, LC (reprint author), UNIV KENTUCKY,DEPT MECH ENGN,LEXINGTON,KY 40506, USA. NR 5 TC 69 Z9 73 U1 1 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0735-1933 J9 INT COMMUN HEAT MASS JI Int. Commun. Heat Mass Transf. PD JAN-FEB PY 1996 VL 23 IS 1 BP 91 EP 100 DI 10.1016/0735-1933(95)00087-9 PG 10 WC Thermodynamics; Mechanics SC Thermodynamics; Mechanics GA TQ657 UT WOS:A1996TQ65700009 ER PT B AU Ellerbroek, BL Plemmons, RJ AF Ellerbroek, BL Plemmons, RJ BE Delogne, P TI Computations in astro-imaging SO INTERNATIONAL CONFERENCE ON IMAGE PROCESSING, PROCEEDINGS - VOL III LA English DT Proceedings Paper CT International Conference on Image Processing (ICIP-96) CY SEP 16-19, 1996 CL LAUSANNE, SWITZERLAND SP IEEE Signal Proc Soc C1 USAF,PHILLIPS LAB,LASERS & IMAGING DIRECTORATE,ALBUQUERQUE,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3259-8 PY 1996 BP 113 EP 116 PG 4 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BG63G UT WOS:A1996BG63G00029 ER PT J AU Shimony, SE Santos, E AF Shimony, SE Santos, E TI Exploiting case-based independence for approximating marginal probabilities SO INTERNATIONAL JOURNAL OF APPROXIMATE REASONING LA English DT Article DE probabilistic reasoning; Bayesian belief networks; approximate belief updating; approximating marginal probabilities; anytime algorithms ID BAYESIAN BELIEF NETWORKS; INFERENCE; SYSTEMS AB Computing marginal probabilities in Bayes networks is a hard problem. Deterministic anytime approximation schemes accumulate the probability mass in a small number of value assignments to the network variables. Under certain assumptions, the probability mass in the assignments is sufficient to obtain a good approximation. Such methods are especially useful for highly connected networks, where the topology makes the exact algorithms intractable. Bayes networks often possess a fine independence structure not evident from the topology, but apparent in local conditional distributions Independence-based (IB) assignments, originally proposed as a theory of abduction, take advantage of such independence, and thus contain fewer assigned variables-and more probability mass. We present several algorithms that use IB assignments for approximating marginal probabilities. Experimental results suggest that this approach is feasible for highly connected belief networks. C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. RP Shimony, SE (reprint author), BEN GURION UNIV NEGEV,DEPT MATH & COMP SCI,POB 653,IL-84105 BEER SHEVA,ISRAEL. RI SHIMONY, EYAL SHLOMO/F-1940-2012 NR 45 TC 13 Z9 13 U1 0 U2 1 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0888-613X J9 INT J APPROX REASON JI Int. J. Approx. Reasoning PD JAN PY 1996 VL 14 IS 1 BP 25 EP 54 DI 10.1016/0888-613X(95)00112-T PG 30 WC Computer Science, Artificial Intelligence SC Computer Science GA TP735 UT WOS:A1996TP73500002 ER PT J AU Carretta, TR Perry, DC Ree, MJ AF Carretta, TR Perry, DC Ree, MJ TI Prediction of situational awareness in F-15 pilots SO INTERNATIONAL JOURNAL OF AVIATION PSYCHOLOGY LA English DT Article ID JOB-PERFORMANCE; WORKING-MEMORY; PERSONALITY; ABILITY; VALIDITY AB Situational awareness (SA) is a skill often deemed essential to pilot performance in both combat and noncombat flying. A study was conducted to determine if SA in U.S. Air Force F-15 pilots could be predicted. The participants were 171 active duty F-15 A/C pilots who completed a test battery representative of various psychological constructs proposed or demonstrated to be valid for the prediction of performance in a wide variety of military and civilian jobs. These predictors encompassed measures of cognitive ability, psychomotor ability, and personality. Supervisor and peer ratings of SA were collected. Supervisors and peers showed substantial agreement on the SA ratings of the pilots. The first unrotated principle component extracted from the supervisor and peer ratings accounted for 92.5% of the variability of ratings. The unrotated first principal component served as the SA criterion. Flying experience measured in number of F-15 hours was the best predictor of SA. After controlling for the effects of F-15 flying hours, the measures of general cognitive ability based on working memory, spatial reasoning, and divided attention were found to be predictive of SA. Psychomotor and personality measures were not predictive. With additional F-15 flying hours it is expected that pilots would improve their ratings of SA. RP Carretta, TR (reprint author), USAF,ARMSTRONG LAB,HRMA,7909 LINDBERGH DR,BLDG 578,BROOKS AFB,TX 78235, USA. NR 52 TC 37 Z9 40 U1 2 U2 5 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 1050-8414 J9 INT J AVIAT PSYCHOL JI Int. J. Aviat. Psychol. PY 1996 VL 6 IS 1 BP 21 EP 41 DI 10.1207/s15327108ijap0601_2 PG 21 WC Psychology, Applied SC Psychology GA TU682 UT WOS:A1996TU68200002 PM 11539172 ER PT J AU Stauffer, J Ree, MJ AF Stauffer, J Ree, MJ TI Predicting with logistic or linear regression: Will it make a difference in who is selected for pilot training? SO INTERNATIONAL JOURNAL OF AVIATION PSYCHOLOGY LA English DT Article AB Selecting individuals for pilot training is typically accomplished by determining what human characteristics are predictive of training success using ordinary linear regression. Frequently, however, the measure of success is passing or failing training. Some critics suggest that ordinary linear regression is inappropriate for such a dichotomous criterion and recommend using logistic regression. For the practitioner the question becomes: ''Will it make a difference in who is selected for pilot training?'' A pilot selection database is used to demonstrate that the ranking of pilot training applicants is nearly identical for both methods. The rank correlations between the methods was .9967. Therefore, both linear and logistic regression would select the same applicants. Other considerations favoring the use of linear regression are discussed. C1 ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 14 TC 4 Z9 4 U1 1 U2 7 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 1050-8414 J9 INT J AVIAT PSYCHOL JI Int. J. Aviat. Psychol. PY 1996 VL 6 IS 3 BP 233 EP 240 DI 10.1207/s15327108ijap0603_2 PG 8 WC Psychology, Applied SC Psychology GA VE721 UT WOS:A1996VE72100002 ER PT J AU Beer, JMA Gallaway, RA Previc, FH AF Beer, JMA Gallaway, RA Previc, FH TI Do individuals' visual recognition thresholds predict performance on concurrent attitude control flight tasks? SO INTERNATIONAL JOURNAL OF AVIATION PSYCHOLOGY LA English DT Article; Proceedings Paper CT 1995 International Conference on Experimental Analysis and Measurement of Situation Awareness CY 1995 CL DAYTONA BEACH, FL ID SITUATIONAL AWARENESS; ATTENTION; MOTION AB Two experiments tested near-threshold recognition performance throughout the visual field, examined the effect of the recognition task on a concurrent attitude tracking task, and tested whether individuals' near-threshold performance would predict their dual-task performance. In Experiment 1, an adaptive procedure measured the minimum viewing duration necessary for 75% performance in an aircraft classification task at various nonfoveal locations. Participants' critical tracking ability was also assessed using a central attitude display. Recognition deteriorated with eccentricity, and a wide distribution of recognition and tracking abilities was found. Experiment 2 combined the tasks; recognition was designated the primary task. Dual-task measures included the change in recognition accuracy and the increase in tracking error. Individuals' recognition thresholds (Experiment 1) failed to predict their dual-task tracking performance (Experiment 2). Notably, viewers' critical tracking ability predicted their success in preserving dual-task aircraft recognition. Recognition biases favoring the upper visual field were identified; this is consistent with a biased spatial attention system. Findings are potentially relevant to situation awareness assessment and to display design. C1 USAF,ARMSTRONG LAB,BROOKS AFB,TX. RP Beer, JMA (reprint author), SYST RES LABS INC,AL,CFTO,POB 35482,BROOKS AFB,TX 78235, USA. NR 33 TC 1 Z9 1 U1 1 U2 1 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 1050-8414 J9 INT J AVIAT PSYCHOL JI Int. J. Aviat. Psychol. PY 1996 VL 6 IS 3 BP 273 EP 297 DI 10.1207/s15327108ijap0603_4 PG 25 WC Psychology, Applied SC Psychology GA VE721 UT WOS:A1996VE72100004 ER PT J AU Campbell, TJ Burris, DR AF Campbell, TJ Burris, DR TI Analysis of chlorinated ethene reduction products in vapor/water phase systems by dual-column, single-detector gas chromatography SO INTERNATIONAL JOURNAL OF ENVIRONMENTAL ANALYTICAL CHEMISTRY LA English DT Article DE gas chromatography; dual-column; foreflushing; chlorinated ethenes; hydrocarbon gases ID DECHLORINATION; TETRACHLOROETHENE AB A dual-column gas chromatographic method using column sequence reversal (foreflushing) for the analysis of chlorinated: ethenes (e.g., tetrachloroethylene and trichloroethylene) and their common reduction products including vinyl chloride, acetylene, ethene and ethane in headspace samples is described. The chlorinated ethenes and, the C-2 hydrocarbon gases are separated on 1% SP-1000 (60/80 mesh Carbopack B) and Carboxen 1000 (60/80 mesh) packed columns, respectively, and detected on a single flame ionization detector. Simultaneous determination of the chlorinated ethenes and C-2 hydrocarbon gases facilitates pathway, mass balance and kinetic studies on reductive transformations of chlorinated ethenes. The use of a single detector simplifies system calibration, data collection and interpretation. Example chromatograms using this method on three different applications are presented to illustrate its utility. C1 ARMSTRONG LAB,AL EQC,TYNDALL AFB,FL 32403. RP Campbell, TJ (reprint author), APPL RES ASSOCIATES INC,139 BARNES DR,TYNDALL AFB,FL 32403, USA. NR 8 TC 5 Z9 5 U1 1 U2 1 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0306-7319 J9 INT J ENVIRON AN CH JI Int. J. Environ. Anal. Chem. PY 1996 VL 63 IS 2 BP 119 EP 126 DI 10.1080/03067319608026257 PG 8 WC Chemistry, Analytical; Environmental Sciences SC Chemistry; Environmental Sciences & Ecology GA UU787 UT WOS:A1996UU78700004 ER PT J AU Ravichandran, KS Larsen, JM AF Ravichandran, KS Larsen, JM TI Influence of mode of initiation on the growth of small surface cracks in titanium aluminides SO INTERNATIONAL JOURNAL OF FATIGUE LA English DT Article DE small crack; surface crack; crack shape; aspect ratio; fatigue crack growth; initiation; titanium; compliance ID FATIGUE AB Fatigue crack growth behaviour of small surface cracks in two alpha(2) (Ti3Al) based titanium aluminide alloys, Ti-24Al-11Nb (at%) and Ti-25Al-17Nb-1Mo, was investigated. The primary objective was to monitor the variations in surface crack aspect ratio (a/c; a = crack depth and c = half surface length) as influenced by the microstructure in which the cracks were initiated and propagated. The continuous changes in a/c have been estimated using compliance data acquired using a laser interferometric system and surface crack length (2c) data collected using a photomicroscopic system. The changes in aic have been used in the calculations of stress intensity factor range (Delta K) and crack growth rate. The aspect ratios of small cracks in Ti-24Al-11Nb, primarily initiated at grain boundaries, varied significantly as the cracks grew, owing to the influence of local microstructure. In the Ti-25Al-17Nb-1Mo alloy, cracks initiated from electro-discharge machined (EDM) notches grew with a nearly semicircular shape. The differences in crack aspect ratio variations between the two materials appear to be due to the differences in the microstructural environment through which the cracks grew. The growth rates of large cracks were found to be similar in both alloys. The differences in crack growth behaviour of small versus large cracks appear to be due to the reduced closure levels of small cracks relative to large cracks. C1 USAF,WRIGHT LAB,MLLN,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Ravichandran, KS (reprint author), UNIV UTAH,DEPT MET ENGN,412 WM C BROWNING BLDG,SALT LAKE CITY,UT 84112, USA. NR 18 TC 6 Z9 6 U1 0 U2 1 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0142-1123 J9 INT J FATIGUE JI Int. J. Fatigue PD JAN PY 1996 VL 18 IS 1 BP 9 EP 16 DI 10.1016/0142-1123(95)00079-8 PG 8 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA TX121 UT WOS:A1996TX12100002 ER PT J AU Nicholas, T Zuiker, JR AF Nicholas, T Zuiker, JR TI On the use of the Goodman diagram for high cycle fatigue design SO INTERNATIONAL JOURNAL OF FRACTURE LA English DT Article ID CRACKS AB Materials in rotating machinery are typically subjected to vibratory loading from a number of sources which, in turn, is superimposed on mean stresses which result primarily from steady-state centrifugal loads. In addition, components subjected to vibratory stresses can sustain damage during manufacturing, break-in cycles, or during service such as from foreign objects, fretting, or other types of wear. The combination of vibratory and 'steady' stress levels can, for certain load levels, produce low cycle fatigue damage in addition to the damage produced from the high frequency (HCF) vibratory loading since the 'steady' stresses are actually low cycle fatigue (LCF) which results in one cycle for every startup and shutdown operation. Design for HCF is generally based on a Goodman diagram which takes into account the vibratory as well as the steady stress amplitudes for fatigue runout or fatigue under a given number of cycles. It does not, however, take into account the combined effects of LCF and HCF. In this investigation, the combined effects are demonstrated analytically by numerical examples which consider both the initiation and propagation phases of fatigue. In addition to the analysis of LCF/HCF interactions, considerations which must be accounted for in design are reviewed in light of a number of failures of components in service in U.S. Air Force fighter engines. A critical assessment of the concepts embedded in the use of the Goodman diagram is presented. Comments on the limitations on the use of a Goodman diagram for design are provided. Some suggestions are offered for the improvement of the design methodology for HCF which involve both damage tolerance considerations and methods for assessing and improving the margin of safety. RP Nicholas, T (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 20 TC 61 Z9 61 U1 2 U2 6 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0376-9429 J9 INT J FRACTURE JI Int. J. Fract. PY 1996 VL 80 IS 2-3 BP 219 EP 235 PG 17 WC Materials Science, Multidisciplinary; Mechanics SC Materials Science; Mechanics GA WC968 UT WOS:A1996WC96800007 ER PT J AU Larsen, JM Worth, BD Annis, CG Haake, FK AF Larsen, JM Worth, BD Annis, CG Haake, FK TI An assessment of the role of near-threshold crack growth in high-cycle-fatigue life prediction of aerospace titanium alloys under turbine engine spectra SO INTERNATIONAL JOURNAL OF FRACTURE LA English DT Article ID ELEVATED-TEMPERATURE AB Increasingly accurate life prediction models are required to utilize the full capability of current and future advanced materials in gas turbine engines. Of particular recent interest are predictions of the lifetimes of engine airfoil materials that experience significant intervals of high-frequency, high-cycle fatigue (HCF). Conventional life management practices for HCF in the turbine engine industry have been based principally on a total-life approach. There is a growing need to develop damage tolerance methods capable of predicting the evolution and growth of HCF damage in the presence of foreign object damage (FOD), low cycle fatigue (LCF), and surface fretting fatigue. To help identify key aspects of the HCF life prediction problem for turbine engine components, a review is presented of the extensive results of an Air Force research contract with Pratt & Whitney on the high strength titanium alloy Ti-8Al-1Mo-1V. Data from this representative turbine-airfoil material are used to examine the applicability of linear elastic fracture mechanics methods for prediction of service lifetimes under load spectra that include high cycle fatigue. The roles of fatigue crack initiation and growth are examined for materials that are nominally-defect-free, as well for materials that have experienced significant prior structural damage. An assessment is presented of the potential utility of the conventional threshold stress intensity factor range, Delta K-th, defined by testing specimens containing large cracks. Although the general utility of a large-crack-Delta K-th approach is questionable due to the potentially rapid growth of small fatigue cracks, the low allowable stresses involved in turbine engine high cycle fatigue appear to limit and simplify the small-crack problem. An examination is also presented of the potential effects of high-cycle fatigue and low-cycle fatigue (HCF/LCF) interactions. C1 UNIV DAYTON,INST RES,DAYTON,OH 45419. PRATT & WHITNEY AIRCRAFT,W PALM BEACH,FL 33410. RP Larsen, JM (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLLN,WL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 27 TC 41 Z9 41 U1 1 U2 9 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0376-9429 J9 INT J FRACTURE JI Int. J. Fract. PY 1996 VL 80 IS 2-3 BP 237 EP 255 PG 19 WC Materials Science, Multidisciplinary; Mechanics SC Materials Science; Mechanics GA WC968 UT WOS:A1996WC96800008 ER PT J AU Hu, SF Chen, Z Mecholsky, JJ AF Hu, SF Chen, Z Mecholsky, JJ TI On the Hertzian fatigue cone crack propagation in ceramics SO INTERNATIONAL JOURNAL OF FRACTURE LA English DT Article ID POLYCRYSTALLINE CERAMICS; INITIATION AB The Hertzian cone crack initiation and propagation in ceramics under cyclic fatigue loading with a spherical indenter is studied. Unlike the so-called quasi-static Hertzian cone crack, the fatigue Hertzian cone crack propagation eliminates the dynamic effect on unstable crack propagation. As such, the crack is found to propagate following the path of pure mode I type. We use an elasticity approach, a finite element analysis, and an empirical analysis to investigate the Hertzian cone crack in three stages: crack initiation, crack propagation, and crack kinking. The mechanism of the multiple concentric cone cracks is also explained. The purpose is to understand and predict the behavior of the formation of the Hertzian fatigue cone crack using available modeling tools. C1 USAF, WRIGHT LAB, MAT DIRECTORATE, MLLP, WRIGHT PATTERSON AFB, OH 45433 USA. UNIV FLORIDA, DEPT MAT SCI & ENGN, GAINESVILLE, FL 32611 USA. NR 25 TC 9 Z9 9 U1 0 U2 3 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 0376-9429 EI 1573-2673 J9 INT J FRACTURE JI Int. J. Fract. PY 1996 VL 79 IS 3 BP 295 EP 307 DI 10.1007/BF00019382 PG 13 WC Materials Science, Multidisciplinary; Mechanics SC Materials Science; Mechanics GA VW635 UT WOS:A1996VW63500005 ER PT J AU Jayaraman, V Srivastava, R AF Jayaraman, V Srivastava, R TI Expert systems in production and operations management - Current applications and future prospects SO INTERNATIONAL JOURNAL OF OPERATIONS & PRODUCTION MANAGEMENT LA English DT Article DE expert systems; operations management; production ID ARTIFICIAL-INTELLIGENCE; MANUFACTURING SYSTEMS AB Defines an expert system (ES) as a decisionmaking tool that captures perishable expertise from an expert and stores this knowledge in the computer, and also as a computer system that can solve problems using human expertise and knowledge of the system environment. Notes that expert systems have found many applications in the area of production and operations management (POM). Explains the key role of the ES as a management tool to enhance productivity, improve quality, increase profits and capture expertise in many business settings. Highlights that the field of POM has a heavy orientation towards problem solving and decision making, hence it is a very fertile area for application for ES. Evaluates the current use of ES in POM and discusses future prospects. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. RP Jayaraman, V (reprint author), UNIV SO MISSISSIPPI,LONG BEACH,MS, USA. NR 57 TC 22 Z9 22 U1 0 U2 4 PU MCB UNIV PRESS LTD PI BRADFORD PA 60/62 TOLLER LANE, BRADFORD, W YORKSHIRE, ENGLAND BD8 9BY SN 0144-3577 J9 INT J OPER PROD MAN JI Int. J. Oper. Prod. Manage. PY 1996 VL 16 IS 12 BP 27 EP & DI 10.1108/01443579610151742 PG 19 WC Management SC Business & Economics GA VZ118 UT WOS:A1996VZ11800003 ER PT J AU Neu, RW Coker, D Nicholas, T AF Neu, RW Coker, D Nicholas, T TI Cyclic behavior of unidirectional and cross-ply titanium matrix composites SO INTERNATIONAL JOURNAL OF PLASTICITY LA English DT Article ID INELASTIC DEFORMATION; RESIDUAL-STRESSES; DAMAGE; PLASTICITY; MODEL AB Relatively simple and efficient micromechanical models are used to obtain the uniaxial response of SCS-6/Timetal 21S with [0](4) and [0/90](s) laminates when subjected to isothermal and thermomechanical fatigue (TMF) loadings. Features of the modeling that are required to obtain the accurate deformation behavior for this class of materials under these loadings are highlighted. To this end, a comparison is made between the concentric cylinder model and the uniaxial stress model for representing the [0] laminate. The axial stresses from the two models are very similar under mechanical loading. The greatest differences appear under thermal loading alone. The differences on the composite response between a lime-independent elastic-plastic and a viscoplastic matrix constitutive model are also examined. The latter is based on the Bodner-Partom unified constitutive model. The [0/90] laminate is treated by adding a parallel element with smeared [90] ply properties to the [0] model and invoking axial strain compatibility as well as stress equilibrium. The proposed constitutive law for the [90] ply includes both matrix viscoplasticity and fiber/matrix separation damage and is based on damage mechanics concepts. The effect of cyclic frequency on TMF behavior is examined. The in-phase TMF life is shown to be very sensitive to frequency due to the relaxation of matrix stress and the attendant increase in fiber stress. C1 CALTECH,PASADENA,CA 91125. USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Neu, RW (reprint author), GEORGIA INST TECHNOL,GEORGE W WOODRUFF SCH MECH ENGN,ATLANTA,GA 30332, USA. RI Coker, Demirkan/B-3386-2011; OI Coker, Demirkan/0000-0001-7385-7089; Neu, Richard W./0000-0002-3779-3038 NR 58 TC 15 Z9 16 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0749-6419 J9 INT J PLASTICITY JI Int. J. Plast. PY 1996 VL 12 IS 3 BP 361 EP 385 DI 10.1016/S0749-6419(96)00012-5 PG 25 WC Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Engineering; Materials Science; Mechanics GA UV401 UT WOS:A1996UV40100005 ER PT J AU Gott, SP AF Gott, SP TI The accelerated development and generality of complex problem-solving skills SO INTERNATIONAL JOURNAL OF PSYCHOLOGY LA English DT Meeting Abstract C1 USAF,ARMSTRONG LAB,BROOKS AFB,TX. NR 0 TC 0 Z9 0 U1 0 U2 2 PU PSYCHOLOGY PRESS PI HOVE PA 27 CHURCH RD, HOVE, EAST SUSSEX, ENGLAND BN3 2FA SN 0020-7594 J9 INT J PSYCHOL JI Int. J. Psychol. PY 1996 VL 31 IS 3-4 BP 1744 EP 1744 PG 1 WC Psychology, Multidisciplinary SC Psychology GA VE857 UT WOS:A1996VE85700705 ER PT B AU Smith, RA AF Smith, RA GP SOC AUTOMOT ENGINEERS INT TI Joint strike fighter integrated subsystems technology (J/IST) demonstration program overview SO INTERNATIONAL POWERED LIFT CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT International Powered Lift Conference / SAE Aerospace Power Systems Conference CY NOV 18-20, 1996 CL JUPITER, FL SP Soc Automot Engineers Int, Amer Helicopter Soc, Amer Inst Aeronaut & Astronaut, Royal Aeronaut Soc AB The Joint Strike Fighter Integrated Subsystems Technology (J/IST) Demonstration Program will demonstrate the integration of secondary power & cooling functions and the replacement of central hydraulics with electrical power to achieve significant Life Cycle Cost (LCC) savings and warfighting benefits. LCC savings of 3 - 4 percent are projected for J/IST technologies versus 1995 state-of-the-art conventional subsystems. J/IST is being accomplished by a team of Boeing, Lockheed Martin, and McDonnell Douglas, under three separate but interrelated contracts. The major technologies are the Thermal/Energy Management Module (T/EMM), T/EMM integration with the engine, 270VDC power management and distribution, and electric primary flight control actuation. Affordability and warfighting benefits assessments are ongoing and will be updated based on the results of the final J/IST demonstrations. C1 USAF,JOINT STRIKE FIGHTER PROGRAM OFF,WASHINGTON,DC. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC AUTOMOTIVE ENGINEERS PI WARRENDALE PA 400 COMMONWEALTH DR, WARRENDALE, PA 15096 BN 1-56091-902-7 PY 1996 BP 55 EP 62 PG 8 WC Engineering, Aerospace SC Engineering GA BH67J UT WOS:A1996BH67J00006 ER PT B AU Sadeghi, KA Bice, W Prestidge, BR AF Sadeghi, KA Bice, W Prestidge, BR GP AUSTRIAN ASSOC RADIAT PROTECT TI Brachytherapy dose inhomogeneity correction using I-125 seeds in the management of carcinomas of the nasopharynx SO IRPA9 - 1996 INTERNATIONAL CONGRESS ON RADIATION PROTECTION / NINTH INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, PROCEEDINGS, VOL 3 LA English DT Meeting Abstract CT 1996 International Congress on Radiation Protection / 9th International Congress of the International-Radiation-Protection-Association (IRPA9) CY APR 14-19, 1996 CL VIENNA, AUSTRIA SP Austrian Assoc Radiat Protect, Int Radiat Protect Assoc C1 UNIV TEXAS,HLTH SCI CTR,CANC THERAPY & RES CTR,SAN ANTONIO,TX 78229. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78229. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INT RADIATION PROTECTION ASSOC PI MONTREAL PA 2155 RUE GUY, BUREAU 820, MONTREAL PQ H3H 2R9, CANADA BN 3-9500255-4-5 PY 1996 BP C522 EP C522 PG 1 WC Engineering, Environmental; Public, Environmental & Occupational Health; Nuclear Science & Technology SC Engineering; Public, Environmental & Occupational Health; Nuclear Science & Technology GA BH13R UT WOS:A1996BH13R00204 ER PT B AU Klauenberg, J Merritt, JH Gardner, R AF Klauenberg, J Merritt, JH Gardner, R GP AUSTRIAN ASSOC RADIAT PROTECT TI Revision of nato standardization agreement (STANAG) 2345 ''evaluation and control of personnel exposure to radio frequency fields'' SO IRPA9 - 1996 INTERNATIONAL CONGRESS ON RADIATION PROTECTION / NINTH INTERNATIONAL CONGRESS OF THE INTERNATIONAL RADIATION PROTECTION ASSOCIATION, PROCEEDINGS, VOL 4 LA English DT Proceedings Paper CT 1996 International Congress on Radiation Protection / 9th International Congress of the International-Radiation-Protection-Association (IRPA9) CY APR 14-19, 1996 CL VIENNA, AUSTRIA SP Austrian Assoc Radiat Protect, Int Radiat Protect Assoc RP Klauenberg, J (reprint author), ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,RADIOFREQUENCY DIV,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INT RADIATION PROTECTION ASSOC PI MONTREAL PA 2155 RUE GUY, BUREAU 820, MONTREAL PQ H3H 2R9, CANADA BN 3-9500255-4-5 PY 1996 BP D781 EP D782 PG 2 WC Engineering, Environmental; Public, Environmental & Occupational Health; Nuclear Science & Technology SC Engineering; Public, Environmental & Occupational Health; Nuclear Science & Technology GA BH13S UT WOS:A1996BH13S00334 ER PT B AU Creech, GL Paul, B Lesniak, C Jenkins, T Lee, R Brown, K AF Creech, GL Paul, B Lesniak, C Jenkins, T Lee, R Brown, K GP IEEE TI Artificial neural networks for accurate high frequency CAD applications SO ISCAS 96: 1996 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS - CIRCUITS AND SYSTEMS CONNECTING THE WORLD, VOL 3 LA English DT Proceedings Paper CT 1996 IEEE International Symposium on Circuits and Systems - Circuits and Systems Connecting the World (ISCAS 96) CY MAY 12-15, 1996 CL ATLANTA, GA SP IEEE C1 USAF,WRIGHT LAB,SOLID STATE ELECT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 2 Z9 2 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3073-0 PY 1996 BP 317 EP 320 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG15U UT WOS:A1996BG15U00080 ER PT B AU Frederickson, AR AF Frederickson, AR GP IEEE TI Concepts for secondary electron emission from irradiated insulators SO ISDEIV - XVIITH INTERNATIONAL SYMPOSIUM ON DISCHARGES AND ELECTRICAL INSULATION IN VACUUM, PROCEEDINGS, VOLS I AND II LA English DT Proceedings Paper CT XVIIth International Symposium on Discharges and Electrical Insulation in Vacuum (ISDEIV) CY JUL 21-26, 1996 CL LAWRENCE BERKELEY NATL LAB, BERKELEY, CA SP Amer Phys Soc, Amer Vacuum Soc, Cooper Power Syst, IEEE, Dielect & Elect Insulat Soc, Lawrence Berkeley Natl Lab, Lawrence Livermore Natl Lab, Los Alamos Natl Lab, Sandia Natl Lab, US DOE HO LAWRENCE BERKELEY NATL LAB C1 USAF,PHILLIPS LAB,SPACE PHYS DIV,BEDFORD,MA 01731. NR 0 TC 1 Z9 1 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2906-6 PY 1996 BP 517 EP 522 PG 6 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG15Z UT WOS:A1996BG15Z00106 ER PT J AU Subramanian, PR Mendiratta, MG Dimiduk, DM AF Subramanian, PR Mendiratta, MG Dimiduk, DM TI The development of Nb-based advanced intermetallic alloys for structural applications SO JOM-JOURNAL OF THE MINERALS METALS & MATERIALS SOCIETY LA English DT Article ID DUCTILE-PHASE; TOUGHNESS; STRENGTH AB A new generation of refractory material systems with significant increases in temperature capability is required to meet the demands of future aerospace applications. Such materials require a balance of proper ties such as low-temperature damage tolerance, high-temperature strength, creep resistance, and superior environmental stability for implementation in advanced aerospace systems. Systems incorporating niobium-based beta alloys and intermetallic compounds have the potential for meeting these requirements. C1 WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH USA. RP Subramanian, PR (reprint author), UNIVERSAL ENERGY SYST INC, MAT & PROC DIV, 4401 DAYTON XENIA RD, DAYTON, OH 45432 USA. NR 36 TC 175 Z9 198 U1 2 U2 13 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086 USA SN 1047-4838 J9 JOM-J MIN MET MAT S JI JOM-J. Miner. Met. Mater. Soc. PD JAN PY 1996 VL 48 IS 1 BP 33 EP 38 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing SC Materials Science; Metallurgy & Metallurgical Engineering; Mineralogy; Mining & Mineral Processing GA TP334 UT WOS:A1996TP33400007 ER PT J AU Weeks, TM AF Weeks, TM TI Planning the US aeronautics technology future SO JOURNAL OF AIRCRAFT LA English DT Editorial Material RP Weeks, TM (reprint author), USAF,WRIGHT AERONAUT LABS,FLIGHT DYNAM DIRECTORATE,COLORADO SPRINGS,CO, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1996 VL 33 IS 1 BP 1 EP 4 DI 10.2514/3.56932 PG 4 WC Engineering, Aerospace SC Engineering GA TV370 UT WOS:A1996TV37000001 ER PT J AU French, M Eastep, FE AF French, M Eastep, FE TI Aeroelastic model design using parameter identification SO JOURNAL OF AIRCRAFT LA English DT Article ID MATRIX CORRECTION; STIFFNESS AB Wind-tunnel model design can be very involved, so an approach has been developed that uses optimization methods to automate it, The model design process has been divided into separate stiffness design and mass design stages. Then, a sample structure was manufactured and subjected to static and modal testing using laser holographic techniques, The predicted flutter response of the model matches the predicted flutter response of the full-scale wing very closely. C1 USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 24 TC 7 Z9 7 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1996 VL 33 IS 1 BP 198 EP 202 DI 10.2514/3.46922 PG 5 WC Engineering, Aerospace SC Engineering GA TV370 UT WOS:A1996TV37000029 ER PT J AU Evwaraye, AO Smith, SR Mitchel, WC AF Evwaraye, AO Smith, SR Mitchel, WC TI Optical admittance studies of vanadium donor level in high-resistivity p-type 6H-SiC SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SILICON-CARBIDE; GROWTH; SPECTROSCOPY; DEFECTS; WAFERS AB The vanadium donor level in high-resistivity p-type 6H-SiC has been studied using optical admittance spectroscopy. Besides the conductance peak due to the band to band transitions, there are three conductance peaks in the spectra of most of the samples. These peaks correspond to photoexcitation of electrons from the valence band to the defect levels. The conductance peak due to the vanadium donor [V4+(3d(1))] level at E(v) + 1.55 eV is identified. The build up of the photoconductance at this peak was studied and it was found that the conductance transients are completely described by a sum of two exponential expressions. The relevant parameters, a,, a,, G(max)(1) and G(max)(2), were determined as functions of temperature. The persistent photoconductance (PPC) due to this defect was also studied. The decay kinetics of the PPC follow the stretched exponential form. The potential barrier against recapture of carriers was determined to be 220 meV for the vanadium donor level. RP Evwaraye, AO (reprint author), MLPO,MAT DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 25 TC 19 Z9 19 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JAN 1 PY 1996 VL 79 IS 1 BP 253 EP 258 DI 10.1063/1.360938 PG 6 WC Physics, Applied SC Physics GA TN211 UT WOS:A1996TN21100039 ER PT J AU Smith, SR Evwaraye, AO Mitchel, WC AF Smith, SR Evwaraye, AO Mitchel, WC TI Temperature dependence of the barrier height of metal-semiconductor contacts on 6H-SiC SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID SCHOTTKY-BARRIER; STATES AB We have examined the temperature dependence of the barrier height of Al, Ag, Au, and W metal-semiconductor contacts on n-type 6H-SiC, and Al and Ag metal-semiconductor contacts on p-type 6H-SiC. The barrier height was determined from the reverse biased capacitance-voltage characteristics of the contacts at temperatures ranging from 300 to 670 K. The measurements were made at 1 MHz. These measurements were compared to the behavior predicted by standard models. All the diodes displayed a negative temperature dependence on n-type SiC, and a positive temperature dependence on p-type SiC. The temperature coefficient is related to the electronegativity of the metal by linear expression. C1 MLPO,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 21 TC 13 Z9 13 U1 2 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JAN 1 PY 1996 VL 79 IS 1 BP 301 EP 304 DI 10.1063/1.360944 PG 4 WC Physics, Applied SC Physics GA TN211 UT WOS:A1996TN21100046 ER PT J AU Look, DC Jogai, B Kaspi, R Ebel, JL Evans, KR Jones, RL Nakano, K Sherriff, RE Stulz, CE DeSalvo, GC Ito, C AF Look, DC Jogai, B Kaspi, R Ebel, JL Evans, KR Jones, RL Nakano, K Sherriff, RE Stulz, CE DeSalvo, GC Ito, C TI Effects of In profile on material and device properties of AlGaAs/InGaAs/GaAs high electron mobility transistors SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID FIELD-EFFECT TRANSISTORS AB The molecular-beam-epitaxial growth of InxGa1-xAs on GaAs or AlyGa1-yAs leads to a variation of In content with depth, due to In segregation. However, by predepositing In at the beginning of ZnxGa1-xAs growth, and also thermally removing the excess In at the end, we can produce a layer with the ideal ''square'' In profile. We find that the performance of AlyGa1-yAs/InxGa1-xAs/GaAs high electron mobility transistors is most enhanced by the predeposition step alone. (C) 1996 American Institute of Physics. C1 USAF,WRIGHT LAB,ELD,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NE CONSORTIUM ENGN EDUC,ST CLOUD,FL 34769. RP Look, DC (reprint author), WRIGHT STATE UNIV,RES CTR,DAYTON,OH 45435, USA. NR 13 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JAN 1 PY 1996 VL 79 IS 1 BP 540 EP 544 DI 10.1063/1.360862 PG 5 WC Physics, Applied SC Physics GA TN211 UT WOS:A1996TN21100082 ER PT J AU Hall, RB Hager, JW AF Hall, RB Hager, JW TI Performance limits for stiffness-critical graphitic foam structures .1. Comparisons with high-modulus foams, refractory alloys and graphite-epoxy composites SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article DE graphitic foams; P120; stiffness-critical; structural elements; mass; thickness AB Graphitic foams offer exciting potential for mass savings in structures. The present investigation seeks to identify the potential mass savings and corresponding dimensional tradeoffs for application of such materials to simple, stiffness-critical structural elements, in support of an in-house materials development program. A hypothetical family of graphitic foams having ligament stiffness properties identical to those of P120 graphite fiber is considered; the stiffness properties of the hypothetical foams are viewed as realistic upper bounds for the performance of this class of materials. A representative refractory alloy, AS4/3501-6 unidirectional and [0/90](s) composites, and commercially available SiC and amorphous carbon foams are compared to the graphitic foams for application to plates in bending and buckling, beams in bending and buckling, and tension bars, in analogy to Gordon [1] and Ashby [2,3]. The mass and thickness ratios of the foams to the comparison materials for the chosen applications depend primarily on the Young's modulus of the foam, which is modeled according to a well-established relation due to Gibson and Ashby [4]. The hypothetical foams are found to offer stiffness properties leading to structural masses ranging from competitive to dramatically improved versus the described comparison materials. Increased structural dimensions are often associated with the savings in mass. Strength properties have not been considered in the present modeling, as processing issues still need to be resolved and the resulting defect distributions are unknown; foams of substantial promise are, however, being fabricated in small quantities. RP Hall, RB (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLBM,2941 P ST STE 1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 15 TC 11 Z9 11 U1 1 U2 6 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 0021-9983 J9 J COMPOS MATER JI J. Compos Mater. PY 1996 VL 30 IS 17 BP 1922 EP 1937 PG 16 WC Materials Science, Composites SC Materials Science GA VV319 UT WOS:A1996VV31900004 ER PT J AU Hall, RB AF Hall, RB TI Performance limits for stiffness-critical graphitic foam structures .2. Comparisons of foams, foam-core and honeycomb-core sandwiches in bending/shear SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article DE graphitic foams; P120; stiffness-critical; shear deformation; sandwich materials; mass; thickness AB Part I of this study [1] described the concept of graphitic structural foams and indicated their substantial potential for saving mass in stiffness-critical structures. Upper bounds, considered achievable, on ligament moduli were assumed in a well-known, empirically-based relation [2] modeling the foam stiffness versus porosity. The resulting hypothetical graphitic foams were compared to commercially available, high-modulus solids and foams for simple structural applications, and were found to offer the potential for dramatic mass reductions. The present paper compares the potential stiffness-critical performances of neat graphitic foams in plate cylindrical bending to those of honeycomb-core sandwich materials, as well as evaluating the foams as potential sandwich core materials. These evaluations require estimates of the foam shear modulus and shear deformation, which were not included in Part I, in order to model the foam deflection to the order standard for sandwich modeling. Three separate foam constitutive models ([2], [3] and elements of [2]-[4]) are considered in the plate bending comparisons, based on upper bound ligament stiffnesses in analogy to [1]; all three assumptions produce similar results, especially for foam porosities exceeding 90 percent. It is found that the influence of shear deformation [5] grows dramatically at porosities exceeding 97 percent, where higher-order theories should be appealed to for accuracy. As the construction of a sandwich of a given stiffness is not unique for given facing and core materials, only mass-optimum sandwiches were compared; each sandwich incorporated the same graphite-epoxy material for face sheets. The neat graphitic foams and foam core sandwiches were found to be competitive on mass and thickness bases with the honeycomb-core sandwich materials for porosities exceeding roughly 90 percent. The graphitic foams and foam-core sandwiches offer the potential for increased in-plane stiffnesses together with the bending stiffnesses associated with honeycomb sandwiches. Finally, the graphitic foams and foam-core sandwiches are briefly compared to the solid materials considered in Part I, including now the effects of shear deformation, and the foams are found to offer mass advantages similar to those predicted in Part I. In summary, Parts I and II indicate that graphitic foams offer exciting potential as additional materials for the design engineer's menu, and may be especially advantageous for stiffness-critical applications involving complex loadings/geometries where minimum mass drives the design. RP Hall, RB (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLBM,2941 P ST STE 1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 21 TC 2 Z9 2 U1 0 U2 6 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 0021-9983 J9 J COMPOS MATER JI J. Compos Mater. PY 1996 VL 30 IS 17 BP 1938 EP 1956 PG 19 WC Materials Science, Composites SC Materials Science GA VV319 UT WOS:A1996VV31900005 ER PT J AU Sanders, BP Mall, S AF Sanders, BP Mall, S TI Transverse fatigue response of a metal matrix composite under strain-controlled mode at elevated temperature .1. Experiments SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Article DE metal matrix composites (MMCs); transverse behavior; strain-control mode; titanium matrix composite; fatigue ID BEHAVIOR AB The transverse fatigue characteristics of a unidirectional titanium-based metal matrix composite (MMC) (SCS-6/Ti-15-3) were investigated under an isothermal condition. Fatigue tests were performed using a hybrid strain-controlled loading mode. In this hybrid control mode, the specimen was always in a tension-tension state of stress perpendicular to the fiber direction. This prevented any possible buckling effects. A systematic approach that involved fatigue tests, microscopic evaluation, and micromechanical analysis, was taken to characterize the fatigue response (that is, fatigue life, stress-strain response, and so forth) and identify the damage and deformation mechanisms. The analysis involved a unique method to model the fiber-matrix interfacial damage. It was found that the fatigue response was initially dominated by the amount of fiber-matrix interfacial damage that occurred during the first loading cycle. The subsequent response was dependent on the rate at which this interfacial damage progressed, the development and propagation of matrix cracks, and matrix inelastic deformation (plasticity and creep). The chronology and accumulation of these damage mechanisms were dependent on the applied strain level. Using the combined approach involving experiments, microscopy, and analysis, the correlation among applied strain levels, fatigue life, damage mechanisms, and macroscopic response (stress and stiffness) were established in this paper. In Part II, the details and results of the micromechanical analysis are presented. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 25 TC 3 Z9 3 U1 0 U2 0 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0884-6804 J9 J COMPOS TECH RES JI J. Compos. Technol. Res. PD JAN PY 1996 VL 18 IS 1 BP 15 EP 21 PG 7 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA VB876 UT WOS:A1996VB87600003 ER PT J AU Sanders, BP Mall, S AF Sanders, BP Mall, S TI Transverse fatigue response of a metal matrix composite under strain-controlled mode at elevated temperature .2. Analysis SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Article DE metal matrix composites (MMCs); transverse behavior; strain-control mode; titanium matrix composite; fatigue AB The present paper is a continuation of Part I to investigate the transverse fatigue behavior of a unidirectional titanium-based metal matrix composite (MMC) (SCS-6/Ti-15-3) at elevated temperature. In Part I of this paper, fatigue tests were conducted under the strain-controlled mode, and a systematic microscopic evaluation was undertaken to identify the damage and deformation mechanisms. In this paper (Part II), the fatigue response is modeled using a micromechanical approach where the fiber-matrix interfacial damage is incorporated along with the inelastic behavior of the matrix. The analysis provided additional insight into the transverse fatigue response of the MMC. Combining the results obtained from this micromechanical analysis, and that obtained from the macroscopic response (that is, stress and modulus) and microscopic evaluation in Part I, the transverse fatigue response of the MMC was thoroughly characterized. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 22 TC 4 Z9 4 U1 0 U2 0 PU AMER SOC TESTING MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DR, W CONSHOHOCKEN, PA 19428-2959 SN 0884-6804 J9 J COMPOS TECH RES JI J. Compos. Technol. Res. PD JAN PY 1996 VL 18 IS 1 BP 22 EP 29 PG 8 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA VB876 UT WOS:A1996VB87600004 ER PT J AU Villalobos, JJ Norling, BK Defreest, CF Rawls, HR Phoenix, RD AF Villalobos, JJ Norling, BK Defreest, CF Rawls, HR Phoenix, RD TI Potassium and rubidium ion exchange of a leucite-reinforces porcelain. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. UTHSC,SAN ANTONIO,TX. RI Norling, Barry/I-4119-2013 OI Norling, Barry/0000-0001-6655-8750 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 396 EP 396 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80100398 ER PT J AU Trautman, P Williams, L Hermesch, C Fiedler, E AF Trautman, P Williams, L Hermesch, C Fiedler, E TI Tobacco use and dental health in Air Force results. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 518 EP 518 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80100519 ER PT J AU Norling, BK Cronin, RJ Dove, SB Verrett, RG Phoenix, RD AF Norling, BK Cronin, RJ Dove, SB Verrett, RG Phoenix, RD TI Sprue design effects on castability and porosity of titanium RPDs. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. RI Norling, Barry/I-4119-2013 OI Norling, Barry/0000-0001-6655-8750 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 1168 EP 1168 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80101168 ER PT J AU Orraca, GE Norling, BK Schmitt, SM Chance, DA Cronin, RJ Yuan, CH AF Orraca, GE Norling, BK Schmitt, SM Chance, DA Cronin, RJ Yuan, CH TI Electric discharge machining (EDM) of dental alloys. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX. RI Norling, Barry/I-4119-2013 OI Norling, Barry/0000-0001-6655-8750 NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 1169 EP 1169 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80101169 ER PT J AU Jessup, J Vandewalle, K Hermesch, C Buikema, D AF Jessup, J Vandewalle, K Hermesch, C Buikema, D TI Effects of surface treatments on amalgam repair. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 1208 EP 1208 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80101208 ER PT J AU Martin, TM Burgess, JO Cabasso, I Rawls, HR AF Martin, TM Burgess, JO Cabasso, I Rawls, HR TI Radiopaque provisional restorative materials. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 USAF,LACKLAND AFB,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 2125 EP 2125 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80102121 ER PT J AU Geisel, MA Hermesch, CB Gureckis, K AF Geisel, MA Hermesch, CB Gureckis, K TI Effect of chemical cracking surface treatments on composite resin repairability. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 2189 EP 2189 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80102184 ER PT J AU Alexander, JB Hermesch, CB Belles, D Buikema, DJ AF Alexander, JB Hermesch, CB Belles, D Buikema, DJ TI Detail reproduction and gypsum compatibility of Kromopan and Jel-Trate Plus. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 2227 EP 2227 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80102223 ER PT J AU Jeter, R Dove, SB Hermesch, CB Camm, J AF Jeter, R Dove, SB Hermesch, CB Camm, J TI Computer assisted densitometric analysis of previously sealed carious teeth. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 2599 EP 2599 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80102593 ER PT J AU Hill, J Grimwood, R Hermesch, C Mark, J AF Hill, J Grimwood, R Hermesch, C Mark, J TI Prevalence of occupationally-related hand dermatitis in dental personnel. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 2733 EP 2733 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80102728 ER PT J AU Evans, DB AF Evans, DB TI Clinical evaluation of halothane and rouge as a disclosing medium. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 2871 EP 2871 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80102865 ER PT J AU Hutchings, MI Vandewalle, KS Schwartz, RS Charlton, DG AF Hutchings, MI Vandewalle, KS Schwartz, RS Charlton, DG TI Alginate disinfection with sodium hypochlorite sodium hydroxide: Effects on gypsum. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 2880 EP 2880 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80102877 ER PT J AU Hermesch, CB Schwartz, RS Murchison, DF Hilton, TJ Cohen, RB Buikema, DJ AF Hermesch, CB Schwartz, RS Murchison, DF Hilton, TJ Cohen, RB Buikema, DJ TI Two year clinical evaluation of three dentin treatments. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 UNIV TEXAS,HLTH SCI CTR,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. KEESLER MED CTR,KEESLER AFB,MS. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 3030 EP 3030 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80103028 ER PT J AU Mills, S Plamondon, T Sherman, I Nemeth, J Puttaiah, R AF Mills, S Plamondon, T Sherman, I Nemeth, J Puttaiah, R TI Relations between bacterial counts and free chlorine in dental waterlines. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 ARMSTRONG LAB,BROOKS AFB,TX. UNIV SCRANTON,SCRANTON,PA 18510. UTHSC,SAN ANTONIO,TX. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 3175 EP 3175 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80103169 ER PT J AU Saunders, T Guillory, V Gregoire, S Pimsler, M Mitchell, M AF Saunders, T Guillory, V Gregoire, S Pimsler, M Mitchell, M TI In-depth disinfection of acrylic resins .2. SO JOURNAL OF DENTAL RESEARCH LA English DT Meeting Abstract C1 USAF,BARKSDALE AFB,LA. USAF,TRAVIS AFB,CA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC DENTAL RESEARCH PI ALEXANDRIA PA 1619 DUKE ST, ALEXANDRIA, VA 22314 SN 0022-0345 J9 J DENT RES JI J. Dent. Res. PY 1996 VL 75 SI SI BP 3190 EP 3190 PG 1 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TT801 UT WOS:A1996TT80103188 ER PT J AU Santos, E AF Santos, E TI Unifying time and uncertainty for diagnosis SO JOURNAL OF EXPERIMENTAL & THEORETICAL ARTIFICIAL INTELLIGENCE LA English DT Article DE temporal reasoning; abduction; linear constraint satisfaction; integer programming; reasoning under uncertainty; diagnosis ID KNOWLEDGE; LOGIC AB Existing models of diagnosis have not unified the notions of time, uncertainty and abduction which are necessary in domains such as clinical diagnosis, dynamic systems modelling, and fault diagnosis. We present a new approach which models information through linear constraints and find that many aspects of our knowledge-base and inferencing mechanism are naturally suited towards these constraints. Furthermore, this approach properly subsumes existing abductive and temporal models and provides a precise framework for explanatory reasoning. C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 22 TC 13 Z9 14 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0952-813X J9 J EXP THEOR ARTIF IN JI J. Exp. Theor. Artif. Intell. PD JAN-MAR PY 1996 VL 8 IS 1 BP 75 EP 94 DI 10.1080/09528139650042556 PG 20 WC Computer Science, Artificial Intelligence SC Computer Science GA TZ550 UT WOS:A1996TZ55000006 ER PT J AU Meier, PA Stephan, KT Blatt, SP AF Meier, PA Stephan, KT Blatt, SP TI Cytomegalovirus polyradiculopathy in HIV-infected patients SO JOURNAL OF GENERAL INTERNAL MEDICINE LA English DT Article DE polyradiculopathy; cytomegalovirus; peripheral neuropathy; AIDS ID IMMUNE-DEFICIENCY SYNDROME; AIDS-RELATED POLYRADICULOPATHY; HUMAN IMMUNODEFICIENCY VIRUS; MANIFESTATIONS; GANCICLOVIR AB Cytomegalovirus polyradiculopathy, a late complication of HIV infection, is characterized by lower extremity weakness, urinary retention, and sacral dysesthesias. We describe four patients (mean CD4 T-cell count = 25 cells/mm(3)) who developed this ''infectious cauda equina syndrome.'' The characteristic cerebrospinal fluid (CSF) findings, notably atypical for a viral infection, included polymorphonuclear leukocytosis (mean white blood cell count = 1512 cells/mm(3), 72% polymorphonuclear leukocytes), elevated protein level (mean = 370 mg/dl), and hypoglycorrhacia (mean = 28 mg/dl). Physicians who treat patients with HIV should be familiar with this syndrome because early intervention, prior to microbiologic confirmation, provides the best hope for improving neurologic function. RP Meier, PA (reprint author), WILFORD HALL USAF MED CTR,DEPT INFECT DIS,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 21 TC 6 Z9 6 U1 0 U2 0 PU BLACKWELL SCIENCE INC PI CAMBRIDGE PA 238 MAIN ST, CAMBRIDGE, MA 02142 SN 0884-8734 J9 J GEN INTERN MED JI J. Gen. Intern. Med. PD JAN PY 1996 VL 11 IS 1 BP 47 EP 49 DI 10.1007/BF02603486 PG 3 WC Health Care Sciences & Services; Medicine, General & Internal SC Health Care Sciences & Services; General & Internal Medicine GA TR842 UT WOS:A1996TR84200008 PM 8691287 ER PT J AU Reynolds, OR Pachter, M Houpis, CH AF Reynolds, OR Pachter, M Houpis, CH TI Full envelope flight control system design using qualitative feedback theory SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB A controlled plant's characteristics can vary widely throughout its operational envelope. This is a major problem in nominal plant-based control system design, Hence, gain scheduling is often used for full envelope design. In this paper, it is proposed to address the plant's variability using robust control design concepts, minimizing the need for gain scheduling, In particular, the frequency-domain-based quantitative feedback theory multiple input multiple output robust controls design method is employed for the synthesis of a full envelope flight control system for an F-16 aircraft derivative, Qualitative feedback theory addresses structured uncertainty that is caused by full envelope operation. Thus, qualitative feedback theory robust control is particularly suited for full envelope controller design, Compensators and prefilters for the aircraft's pitch and lateral/directional channels are designed to meet level 1 flying qualities specifications, and these designs are validated using simulations. RP Reynolds, OR (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,2950 P ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 21 Z9 23 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1996 VL 19 IS 1 BP 23 EP 29 DI 10.2514/3.21575 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA TQ531 UT WOS:A1996TQ53100004 ER PT J AU Rodriguez, AA Cloutier, JR AF Rodriguez, AA Cloutier, JR TI Performance enhancement for a missile in the presence of saturating actuators SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID SYSTEMS AB A method is presented for enhancing the performance of a missile, at a stable operating point, in the presence of multiple saturating actuators, The method involves the design of a saturation detection system, called an error governor, that maintains, to the extent possible, the multivariable properties of the original autopilot design. The system prevents saturation, eliminates windup phenomena, ensures finite gain L(infinity) closed-loop stability, and maintains, to the extent possible, the directionality properties of the original autopilot. C1 USAF, ARMAMENT DIRECTORATE, EGLIN AFB, FL 32542 USA. RP Rodriguez, AA (reprint author), ARIZONA STATE UNIV, DEPT ELECT ENGN, CTR SYST SCI & ENGN, TEMPE, AZ 85287 USA. NR 21 TC 1 Z9 1 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1996 VL 19 IS 1 BP 38 EP 46 DI 10.2514/3.21577 PG 9 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA TQ531 UT WOS:A1996TQ53100006 ER PT J AU Mazzoleni, AP Hall, CD Stabb, MC AF Mazzoleni, AP Hall, CD Stabb, MC TI Double averaging approach to the study of spinup dynamics of flexible satellites SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID APPENDAGES AB We study the dynamics of a class of flexible dual-spin satellites in which the rotor is spun up by a small constant torque T applied by the platform. We use a previously published zero torque solution that was obtained using the Krylov-Bogolinbov-Mitropolski averaging method. A second application of averaging developed herein leads to a reduction of the equations of motion from a sixth-order system to a single first-order equation describing the slow evolution of energy as a function of the axial angular momentum of the rotor. The geometrical interpretation of this reduction involves projecting solutions onto a certain bifurcation diagram. Numerical solutions of the averaged equation agree with numerical solutions to the full sixth-order system and show that the flexible spacecraft behaves essentially the same as its rigid counterpart during the spinup maneuver. C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. STRUCT DYNAM RES CORP,ADV TEST & ANAL WESTERN REG OPERAT,SAN DIEGO,CA 92130. RP Mazzoleni, AP (reprint author), TEXAS CHRISTIAN UNIV,DEPT ENGN,BOX 5100,FT WORTH,TX 76129, USA. NR 14 TC 3 Z9 3 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1996 VL 19 IS 1 BP 54 EP 59 DI 10.2514/3.21579 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA TQ531 UT WOS:A1996TQ53100008 ER PT J AU Klinenberg, E So, Y Rempel, D AF Klinenberg, E So, Y Rempel, D TI Temperature effects on vibrotactile sensitivity threshold measurements: Implications for carpal tunnel screening tests SO JOURNAL OF HAND SURGERY-AMERICAN VOLUME LA English DT Article ID SKIN TEMPERATURE; VIBRATION; HAND; NEUROPATHY AB This study examines the effect of skin temperature on fingertip vibrotactile sensitivity measurements and the resulting implications for carpal tunnel syndrome screening tests. Twenty subjects (11 men, 9 women) were tested for fingertip vibrotactile thresholds using the method of limits at four different frequencies (31.5, 125, 250, and 500 Hz) and six temperature categories (17 degrees-20 degrees C, 20 degrees-23 degrees C, 23 degrees-26 degrees C, 26 degrees-29 degrees C, 29 degrees-32 degrees C, 32 degrees-35 degrees C). Vibrotactile sensitivity thresholds increased with decreasing fingertip skin temperature. Furthermore, the relationship was a function of vibration frequency. Higher frequencies were more affected by temperature than lower frequencies, with significant effects beginning at 29 degrees C. These temperature-related effects may lead to possible false positive results in screening for carpal tunnel syndrome or other neuropathies. To minimize potential temperature-induced misclassification errors during these screening tests, fingertip skin temperature should be recorded before measurement and probably maintained above 29 degrees C during the measurement. C1 USAF,ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,BROOKS AFB,TX. RI Rempel, David/E-8424-2013 NR 22 TC 6 Z9 6 U1 0 U2 0 PU CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS PI NEW YORK PA 650 AVENUE OF THE AMERICAS, NEW YORK, NY 10011 SN 0363-5023 J9 J HAND SURG-AM JI J. Hand Surg.-Am. Vol. PD JAN PY 1996 VL 21A IS 1 BP 132 EP 137 DI 10.1016/S0363-5023(96)80166-3 PG 6 WC Orthopedics; Surgery SC Orthopedics; Surgery GA TR345 UT WOS:A1996TR34500021 PM 8775208 ER PT J AU Wallace, W Ward, T Breen, A Attaway, H AF Wallace, W Ward, T Breen, A Attaway, H TI Identification of an anaerobic bacterium which reduces perchlorate and chlorate as Wolinella succinogenes SO JOURNAL OF INDUSTRIAL MICROBIOLOGY LA English DT Article DE bioreduction; perchlorate; chlorate; Wolinella succinogenes ID TERMINAL ELECTRON-ACCEPTOR; BOOTSTRAP AB A bacterium coded as strain HAP-1 was isolated from a municipal anaerobic digestor for its ability to reduce > 7000 ppm perchlorate in wastewaters. The organism is capable of the dissimilatory reduction of perchlorate oi chlorate to chloride for energy and growth. It is a Gram-negative, non-sporeforming, obligately anaerobic, motile: thin rod. Antibiotic resistance, utilization of carbon substrates and utilization of electron acceptors by bacterium HAP-1 were similar to Wolinella succinogenes. The organism's 16S rRNA sequence was 0.75% different from that of the type strain of W. succinogenes. The fatty acid compositions of the two organisms are very similar. The morphological, physiological and 16S rRNA sequence data indicated that bacterium HAP-1 is a strain of W. succinogenes that can utilize perchlorate or chlorate as a terminal electron acceptor. C1 UNIV CINCINNATI,COLL MED,DEPT MOLEC GENET,CINCINNATI,OH 45267. MANTECH ENVIRONM TECHNOL INC,ARMSTRONG LAB,EQ,TYNDALL AFB,FL 32403. RP Wallace, W (reprint author), APPL RES ASSOCIATES INC,GULF COAST DIV,POB 40128,BLDG 1142,MISSISSIPPI RD,TYNDALL AFB,FL 32403, USA. NR 30 TC 102 Z9 109 U1 1 U2 17 PU STOCKTON PRESS PI BASINGSTOKE PA HOUNDMILLS, BASINGSTOKE, HAMPSHIRE, ENGLAND RG21 6XS SN 0169-4146 J9 J IND MICROBIOL JI J. Indust. Microbiol. PD JAN PY 1996 VL 16 IS 1 BP 68 EP 72 DI 10.1007/BF01569924 PG 5 WC Biotechnology & Applied Microbiology SC Biotechnology & Applied Microbiology GA TY357 UT WOS:A1996TY35700011 ER PT J AU Burton, BD Louder, DS Yoder, BA AF Burton, BD Louder, DS Yoder, BA TI Factors associated with outcome in newborns of maternal pretreated chorioamnionitis. SO JOURNAL OF INVESTIGATIVE MEDICINE LA English DT Meeting Abstract C1 USAF,WILFORD HALL MED CTR,DEPT PEDIAT,LACKLAND AFB,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 1081-5589 J9 J INVEST MED JI J. Invest. Med. PD JAN PY 1996 VL 44 IS 1 BP A14 EP A14 PG 1 WC Medicine, General & Internal; Medicine, Research & Experimental SC General & Internal Medicine; Research & Experimental Medicine GA TP690 UT WOS:A1996TP69000081 ER PT J AU Schelonka, RL Yoder, BA Hurst, MK Ascher, DP Hensley, DM AF Schelonka, RL Yoder, BA Hurst, MK Ascher, DP Hensley, DM TI Volume of blood required for culture positivity in an experimental bacteremia model. SO JOURNAL OF INVESTIGATIVE MEDICINE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,SAN ANTONIO,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 1081-5589 J9 J INVEST MED JI J. Invest. Med. PD JAN PY 1996 VL 44 IS 1 BP A12 EP A12 PG 1 WC Medicine, General & Internal; Medicine, Research & Experimental SC General & Internal Medicine; Research & Experimental Medicine GA TP690 UT WOS:A1996TP69000071 ER PT J AU Young, M Yoder, B AF Young, M Yoder, B TI Outcomes of teenage pregnancy in a military population. SO JOURNAL OF INVESTIGATIVE MEDICINE LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT PEDIAT,LACKLAND AFB,TX. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLACK INC PI THOROFARE PA 6900 GROVE RD, THOROFARE, NJ 08086 SN 1081-5589 J9 J INVEST MED JI J. Invest. Med. PD JAN PY 1996 VL 44 IS 1 BP A15 EP A15 PG 1 WC Medicine, General & Internal; Medicine, Research & Experimental SC General & Internal Medicine; Research & Experimental Medicine GA TP690 UT WOS:A1996TP69000089 ER PT J AU Putthanarat, S Eby, RK Adams, WW Liu, GF AF Putthanarat, S Eby, RK Adams, WW Liu, GF TI Aspects of the morphology of the silk of Bombyx mori SO JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY LA English DT Article ID BETA-SHEETS; SPIDER SILK; GEOMETRICAL PROPERTIES; PROTEINS AB Atomic force microscopy was used to examine the exterior surface of as-spun cocoon silk, raw silk, and degummed silk as well as the interior surface of peeled degummed silk of Bombyx mori. The images yielded a broad variety of features with a wide range of dimensions. They are qualitatively similar to those of the dragline silk of Nephila clavipes. Examination of the surface roughness, the surface profiles, and the Fourier transforms of the profiles showed the surface of the degummed silk to be quantitatively similar to the silk of N. clavipes. The average roughness is 4 nm. The average dimensions of the features are approximately 100 to 150 ( > 2000 in peeled samples) nm axially and 50 to 300 nm laterally. They appear to emerge from and to enter the surface, to vary in width, and to twist about one another in an irregular manner. In the peeled degummed silk they extend more regularly for long distances in approximately the axial direction. In some cases they appear to be, oriented at different small angles with respect to the fiber axis in different layers. Taken together with other data, they suggest the presence of large fibrillar structures. The same suggestion also applies to similar structures in N. clavipes. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Putthanarat, S (reprint author), UNIV AKRON,DEPT & INST POLYMER SCI,AKRON,OH 44325, USA. RI Adams, Wade/A-7305-2010 NR 34 TC 15 Z9 17 U1 1 U2 4 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 1060-1325 J9 J MACROMOL SCI PURE JI J. Macromol. Sci.-Pure Appl. Chem. PY 1996 VL A33 IS 7 BP 899 EP 911 DI 10.1080/10601329608014640 PG 13 WC Polymer Science SC Polymer Science GA UT935 UT WOS:A1996UT93500006 ER PT J AU WILLIAMS, WJ AF WILLIAMS, WJ TI DANIELS,JOSEPHUS AND THE UNITED-STATES-NAVYS SHIPBUILDING PROGRAM DURING WORLD-WAR-I SO JOURNAL OF MILITARY HISTORY LA English DT Article RP WILLIAMS, WJ (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 37 TC 3 Z9 3 U1 0 U2 0 PU VIRGINIA MILITARY INST PI LEXINGTON PA LEXINGTON, VA 24450 SN 0899-3718 J9 J MILITARY HIST JI J. Mil. Hist. PD JAN PY 1996 VL 60 IS 1 BP 7 EP 38 DI 10.2307/2944447 PG 32 WC History SC History GA TR163 UT WOS:A1996TR16300001 ER PT J AU Natarajan, LV Sutherland, RL Tondiglia, VP Bunning, TJ Adams, WW AF Natarajan, LV Sutherland, RL Tondiglia, VP Bunning, TJ Adams, WW TI Electro-optical switching characteristics of volume holograms in polymer dispersed liquid crystals SO JOURNAL OF NONLINEAR OPTICAL PHYSICS & MATERIALS LA English DT Article AB Electrically switchable volume holograms lead to the possibility of real-time electrooptical control of diffractive optic components. We report here on the development of a novel photopolymer-liquid crystal composite material system for writing in a fast single step, high diffraction efficiency volume holograms, capable of switching in applied electric fields of low voltage. Switching of a first-order Bragg diffracted beam into the zero-order with an applied field of similar to 10 V/mu m was observed. With the addition of a surfactant to our pre-polymer syrup, we observed lowering of the switching fields to similar to 5 V/mu m. We report response times for switching and relaxation in the order of microseconds. Low voltage, high resolution scanning electron microscopy studies show that the Bragg gratings formed consist of periodic polymer dispersed liquid crystal planes. The addition of surfactant leads to formation of very uniform small (20-40 nm) nematic droplets. A simple model based on the shape of the liquid crystal droplets was applied to explain the switching fields and response times. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Natarajan, LV (reprint author), SCI APPLICAT INT CORP,101 WOODMAN DR,DAYTON,OH 45431, USA. RI Adams, Wade/A-7305-2010 NR 9 TC 97 Z9 96 U1 0 U2 6 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0218-1991 J9 J NONLINEAR OPT PHYS JI J. Nonlinear Opt. Phys. Mater. PD JAN PY 1996 VL 5 IS 1 BP 89 EP 98 DI 10.1142/S021886359600009X PG 10 WC Optics; Physics, Applied SC Optics; Physics GA TZ085 UT WOS:A1996TZ08500009 ER PT J AU Fellner, JP Sandhu, SS AF Fellner, JP Sandhu, SS TI Diffusion-limited self-discharge reaction in the Hubble space telescope battery SO JOURNAL OF POWER SOURCES LA English DT Article DE nickel-hydrogen battery; self-discharge; diffusion-limited reaction ID NICKEL-HYDROXIDE ELECTRODE AB The self-discharge rate of aerospace flight-quality nickel-hydrogen batteries is limited by hydrogen diffusion within the nickel electrode active material. A diffusion-limited reaction model is developed which accounts for the observed self-discharge behavior. Effective hydrogen diffusion coefficients were calculated from the open-circuit self-discharge data on Hubble space telescope flight-qualified nickel-hydrogen cells and ranged from 1.12 x 10(-10) cm(2)/sec at 25 degrees C to 7.45 x 10(-12) cm(2)/sec at 0 degrees C. C1 UNIV DAYTON,DAYTON,OH 45469. RP Fellner, JP (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 19 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0378-7753 J9 J POWER SOURCES JI J. Power Sources PD JAN PY 1996 VL 58 IS 1 BP 99 EP 102 DI 10.1016/0378-7753(96)02329-4 PG 4 WC Chemistry, Physical; Electrochemistry; Energy & Fuels; Materials Science, Multidisciplinary SC Chemistry; Electrochemistry; Energy & Fuels; Materials Science GA VE117 UT WOS:A1996VE11700014 ER PT J AU Tan, A Badhwar, GD Allahdadi, FA Medina, DF AF Tan, A Badhwar, GD Allahdadi, FA Medina, DF TI Analysis of the solwind fragmentation event using theory and computations SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID BREAKUP; IMPACT AB The planned fragmentation of the Solwind satellite in an antisatellite experiment is analyzed from the radar data on the fragments obtained following the experiment. The orthogonal components of the velocity perturbations received by the fragments are calculated, and the angular distributions of the fragments obtained. Groups of three or four fragments having similar velocity changes most likely originated from adjacent parts of Solwind or the antisatellite, and this episode may be an example of sequential fragmentation in space. The angular distribution of the fragments shows a primary and a secondary area of concentration of the fragments, the former possibly indicating the exit area of the antisatellite fragments. Three fragments thrown out with extremely large velocity boosts in the forward direction were objects of much speculation. The possibility that these represented ricochet ejecta resulting from oblique hypervelocity impact between Solwind and the antisatellite is discussed. The velocity of the antisatellite at the moment of impact is estimated to have been near 1 km/s. The angles of encounter, impact, and ricochet are defined and determined. The observed angle between the antisatellite and the ricochet fragments suggests that incidence near 45 deg was possible. The significantly higher ricochet speeds compared with the relative speed between the target and the projectile are consistent with computational results obtained from Lagrangian and Eulerian hydrocodes. The evidence strongly points to the possibility that the three objects were actually ricochet material produced by oblique hypervelocity impact in space. C1 NASA,SPACE SCI BRANCH,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. USAF,PHILLIPS LAB,SPACE KINET IMPACT & DEBRIS BRANCH,KIRTLAND AFB,NM 87117. RP Tan, A (reprint author), ALABAMA A&M UNIV,DEPT PHYS,NORMAL,AL 35762, USA. NR 23 TC 4 Z9 4 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JAN-FEB PY 1996 VL 33 IS 1 BP 79 EP 85 PG 7 WC Engineering, Aerospace SC Engineering GA TV691 UT WOS:A1996TV69100012 ER PT J AU Simpson, JR Montgomery, DC AF Simpson, JR Montgomery, DC TI A biased-robust regression technique for the combined outlier-multicollinearity problem SO JOURNAL OF STATISTICAL COMPUTATION AND SIMULATION LA English DT Article DE Montecarlo simulation; ridge regression; breakdown point; efficiency; bounded influence ID UNMASKING MULTIVARIATE OUTLIERS; RIDGE REGRESSION; NONORTHOGONAL PROBLEMS; BOUNDED-INFLUENCE; LEVERAGE POINTS; ESTIMATORS; LOCATION AB The combined outlier-multicollinearity problem occurs frequently in regression data. Methods that successfully address this problem effectively combine biased and robust estimation techniques. A biased-robust estimator is proposed that uses a multi-stage generalized M-estimator with fully iterated ridge regression to successfully control both influence and collinearity in regression datasets. Two previously published approaches are compared with the proposal via simulation experiments. The best performing published technique is also compared with our proposal using a dataset containing a cloud of outliers and severe multicollinearity. The,proposed biased-robust method outperforms the published technique both in simulation and the example. C1 ARIZONA STATE UNIV, DEPT IND & MANAGEMENT SYST ENGN, TEMPE, AZ 85287 USA. RP Simpson, JR (reprint author), USAF ACAD, DEPT MATH SCI, COLORADO SPRINGS, CO 80840 USA. NR 34 TC 13 Z9 13 U1 0 U2 6 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0094-9655 EI 1563-5163 J9 J STAT COMPUT SIM JI J. Stat. Comput. Simul. PY 1996 VL 56 IS 1 BP 1 EP 22 DI 10.1080/00949659608811777 PG 22 WC Computer Science, Interdisciplinary Applications; Statistics & Probability SC Computer Science; Mathematics GA WD280 UT WOS:A1996WD28000001 ER PT J AU Shute, VJ Gluck, KA AF Shute, VJ Gluck, KA TI Individual differences in patterns of spontaneous online tool use SO JOURNAL OF THE LEARNING SCIENCES LA English DT Article ID STUDENTS AB More than 400 individuals participated in an experiment involving two versions of a computer-based tutor teaching principles of electricity. We examined the relations among elective tool use, learning environment, outcome, and efficiency. We also tested the influence of both individual differences and learning environment on tool-usage behavior. The data showed no differences between the two learning environments (rule application vs. rule induction) with regard to outcome performance or learning efficiency. In addition, neither environment significantly influenced overall tool use. There was a main effect of tool use on learning outcome, but not on learning time. We categorized learners into four groups, based on tool-usage patterns and found that (a) people tended to show stable patterns across time and (b) that patterns differed significantly in terms of learning outcome-it was most effective to use the online tools earlier in the learning process rather than later. In terms of individual differences, we identified the characteristics of learners who evidenced different tool-usage patterns. They varied according to cognitive ability, domain-related interest, and gender. We propose a causal model that takes into account all of these data sources in predicting posttest performance. The article concludes with implications of these findings for those interested in maximizing instructional effectiveness, as well as suggestions for future research directions. C1 ARMSTRONG LAB,BROOKS AFB,TX 78235. GALAXY SCI CORP,LACKLAND AFB,TX. NR 22 TC 12 Z9 12 U1 1 U2 1 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 1050-8406 J9 J LEARN SCI JI J. Learn. Sci. PY 1996 VL 5 IS 4 BP 329 EP 355 DI 10.1207/s15327809jls0504_2 PG 27 WC Education & Educational Research; Psychology, Educational SC Education & Educational Research; Psychology GA VK570 UT WOS:A1996VK57000002 ER PT J AU Huber, NF Bowman, WJ AF Huber, NF Bowman, WJ TI Longitudinal vibration effects on a copper water heat pipe's capillary limit SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB The effect of longitudinal vibration on the capillary limit of a copper:water heat pipe with a tightly wrapped screen wick was investigated. The capillary limit was measured over a range of operating temperatures under static conditions. A bench-top shaker was used to provide vibration in the longitudinal asis of the heat pipe. The capillary limit was measured at vibration frequencies of 10, 30, and 50 Hz. At each of these frequencies, tests were run at vibration amplitudes of 0.2 and 2.0 g. The pipe was maintained at a constant inclination angle and power throughput was increased until dryout occurred. The power throughput at dryout was considered the capillary limit. The measured capillary limit for each vibration test was compared to the static tests to determine the effect of the vibration. The results covered operating temperatures from 41.4 to 96.6 degrees C. A vibration amplitude of 0.2 g caused a 2.3% decrease in the capillary limit. However, there is a 3.7% uncertainty in the data. A vibration amplitude of 2.0 g at 30 and 50 Hz caused a 9.6 and 6.1% degrade in capillary heat transport limit, respectively. At 2.0 g and 10 Hz there is a 1.8% decrease in capillary heat transport limit. C1 USAF,INST TECHNOL,DEPT AERONAUT,WRIGHT PATTERSON AFB,OH 45433. RP Huber, NF (reprint author), USAF,WRIGHT LAB,AEROPROPULS & POWER DIRECTORATE,TURBINE ENGINE DIV,ADV STRUCT TEAM LEAD,WRIGHT PATTERSON AFB,OH 45433, USA. NR 7 TC 6 Z9 6 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JAN-MAR PY 1996 VL 10 IS 1 BP 90 EP 96 DI 10.2514/3.757 PG 7 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA TQ034 UT WOS:A1996TQ03400013 ER PT J AU Quan, R Stech, D AF Quan, R Stech, D TI Time varying passive vibration absorption for flexible structures SO JOURNAL OF VIBRATION AND ACOUSTICS-TRANSACTIONS OF THE ASME LA English DT Article ID ABSORBER; DESIGN AB A time varying extension of the passive vibration absorber is described, which increases the effectiveness of a small number of passive vibration absorbers on large or changing flexible structures. Initially, the extended absorber is targeted on a subset of the modes of the flexible structure. A stable switching scheme is described, which allows the absorber to target different subsets of modes, or to adapt to changes in the flexible structure. Computer simulation and experimental work are given which demonstrate the effectiveness of the extended absorber. RP Quan, R (reprint author), USAF ACAD,FRANK J SEILER RES LAB,AEROSP SCI DIV,COLORADO SPRINGS,CO 80840, USA. NR 8 TC 2 Z9 2 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1048-9002 J9 J VIB ACOUST JI J. Vib. Acoust.-Trans. ASME PD JAN PY 1996 VL 118 IS 1 BP 36 EP 40 DI 10.1115/1.2889632 PG 5 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA UF836 UT WOS:A1996UF83600006 ER PT B AU Johnson, RO Dymshits, BM Ivanov, GV Mescherskiy, AN Reilly, JP Lander, ML AF Johnson, RO Dymshits, BM Ivanov, GV Mescherskiy, AN Reilly, JP Lander, ML BE Bennett, HE Guenther, AH Kozlowski, MR Newnam, BE Soileau, MJ TI Laser-material test results from Russian high power carbon monoxide laser SO LASER-INDUCED DAMAGE IN OPTICAL MATERIALS: 1995: 27TH ANNUAL BOULDER DAMAGE SYMPOSIUM, PROCEEDINGS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 27th Annual Boulder Damage Symposium on Laser-Induced Damage in Optical Materials CY OCT 30-NOV 01, 1995 CL BOULDER, CO SP Lawrence Livermore Natl Lab, Bennett Opt Res Inc, Univ Cent Florida, Ctr Res & Educ Opt & Lasers, Los Alamos Natl Lab, NIST, Sandia Natl Labs, Soc Photo Opt Instrumentat Engineers DE CO laser; supersonic laser; high power laser C1 USAF,WRIGHT LAB,AAJS,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2089-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2714 BP 222 EP 228 DI 10.1117/12.240421 PG 7 WC Materials Science, Coatings & Films; Optics SC Materials Science; Optics GA BF96Q UT WOS:A1996BF96Q00023 ER PT B AU Schlie, LA AF Schlie, LA BE Bennett, HE Guenther, AH Kozlowski, MR Newnam, BE Soileau, MJ TI Ultrafast laser-semiconductor interactions SO LASER-INDUCED DAMAGE IN OPTICAL MATERIALS: 1995: 27TH ANNUAL BOULDER DAMAGE SYMPOSIUM, PROCEEDINGS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 27th Annual Boulder Damage Symposium on Laser-Induced Damage in Optical Materials CY OCT 30-NOV 01, 1995 CL BOULDER, CO SP Lawrence Livermore Natl Lab, Bennett Opt Res Inc, Univ Cent Florida, Ctr Res & Educ Opt & Lasers, Los Alamos Natl Lab, NIST, Sandia Natl Labs, Soc Photo Opt Instrumentat Engineers C1 USAF,PHILLIPS LAB,LASER & IMAGING DIRECTORATE,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2089-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2714 BP 582 EP 594 DI 10.1117/12.240387 PG 13 WC Materials Science, Coatings & Films; Optics SC Materials Science; Optics GA BF96Q UT WOS:A1996BF96Q00057 ER PT B AU Ness, J Zwick, H Molchany, J AF Ness, J Zwick, H Molchany, J BE Stuck, BE Belkin, M Katzir, A TI Preferred retinal location induced by macular occlusion in a target recognition task SO LASER-INFLICTED EYE INJURIES: EPIDEMIOLOGY, PREVENTION, AND TREATMENT, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT SPIE/BiOS Conference on Laser-Inflicted Eye Injuries - Epidemiology, Prevention, and Treatment CY JAN 29-30, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers, Biomedical Opt Soc DE retinal laser lesion; artificial scotoma; contrast sensitivity; eye movements; preferred retinal area C1 USAF,MED RES DETACHMENT,WALTER REED ARMY INST RES,BROOKS AFB,TX 78235. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2048-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2674 BP 131 EP 135 DI 10.1117/12.237501 PG 5 WC Engineering, Biomedical; Ophthalmology; Optics SC Engineering; Ophthalmology; Optics GA BF31G UT WOS:A1996BF31G00015 ER PT B AU Molchany, JW Lund, DJ AF Molchany, JW Lund, DJ BE Stuck, BE Belkin, M Katzir, A TI Human performance decrements associated with the bandwidth of laser protective eyewear concepts SO LASER-INFLICTED EYE INJURIES: EPIDEMIOLOGY, PREVENTION, AND TREATMENT, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT SPIE/BiOS Conference on Laser-Inflicted Eye Injuries - Epidemiology, Prevention, and Treatment CY JAN 29-30, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers, Biomedical Opt Soc DE laser protection; bandwidth; human performance; tracking; short wavelength; blue C1 USAF,MED RES DETACHMENT,WALTER REED ARMY INST RES,BROOKS AFB,TX 78235. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2048-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2674 BP 198 EP 207 DI 10.1117/12.237510 PG 10 WC Engineering, Biomedical; Ophthalmology; Optics SC Engineering; Ophthalmology; Optics GA BF31G UT WOS:A1996BF31G00024 ER PT B AU Richmond, R Stettner, R Bailey, H AF Richmond, R Stettner, R Bailey, H BE Kamerman, GW TI Laser radar focal plane array for three-dimensional imaging SO LASER RADAR TECHNOLOGY AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser Radar Technology and Applications CY APR 10-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE laser radar imaging; three-dimensional imaging C1 USAF,WRIGHT LAB AVION DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 6 Z9 6 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2129-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2748 BP 61 EP 67 DI 10.1117/12.243573 PG 7 WC Optics SC Optics GA BG28C UT WOS:A1996BG28C00005 ER PT B AU Richmond, R Woodworth, PD Overbeck, JA Salisbury, MS Fetner, RH Armstrong, EE Masters, LT Brodbeck, DT AF Richmond, R Woodworth, PD Overbeck, JA Salisbury, MS Fetner, RH Armstrong, EE Masters, LT Brodbeck, DT BE Kamerman, GW TI Improved airdrop capabilities using a 2 mu m laser radar system SO LASER RADAR TECHNOLOGY AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser Radar Technology and Applications CY APR 10-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE ladar; laser radar; wind profiling; VAD C1 USAF,WRIGHT LABS,WL,AARI 2,WRIGHT PATTERSON AFB,OH. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2129-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2748 BP 94 EP 99 DI 10.1117/12.243544 PG 6 WC Optics SC Optics GA BG28C UT WOS:A1996BG28C00008 ER PT B AU Mandeville, WJ Dinndorf, KM Champigny, NE AF Mandeville, WJ Dinndorf, KM Champigny, NE BE Kamerman, GW TI Characterization of passively Q-switched microchip lasers for laser radar SO LASER RADAR TECHNOLOGY AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser Radar Technology and Applications CY APR 10-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE microchip laser; laser radar; temporal jitter; solid-state laser C1 USAF,WRIGHT LAB,MNGS,WL,EGLIN AFB,FL 32542. NR 0 TC 14 Z9 14 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2129-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2748 BP 358 EP 366 DI 10.1117/12.243567 PG 9 WC Optics SC Optics GA BG28C UT WOS:A1996BG28C00032 ER PT B AU Roach, WP DiCarlo, CD Noojin, GD Stolarski, DJ Amnotte, R Caruthers, V Rockwell, BA Cain, CP AF Roach, WP DiCarlo, CD Noojin, GD Stolarski, DJ Amnotte, R Caruthers, V Rockwell, BA Cain, CP BE Jacques, SL Katzir, A TI Sub-nanosecond, single laser pulse minimum visible lesion studies in the near infrared SO LASER-TISSUE INTERACTION VII, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser-Tissue Interaction VII CY JAN 29-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE Minimum Visible Lesions (MVL); probit analysis (ED(50)); fluorescein angiography; lesion threshold; infrared wavelength; picosecond; retinal threshold damage C1 ARMSTRONG LAB,DIV OPT RADIAT,BROOKS AFB,TX 78235. NR 0 TC 2 Z9 2 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2055-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2681 BP 366 EP 374 DI 10.1117/12.239597 PG 9 WC Engineering, Biomedical; Optics SC Engineering; Optics GA BF67R UT WOS:A1996BF67R00045 ER PT B AU Kennedy, PK Wright, EM Feng, QY Cook, K Hammer, DX Thompson, CR Moloney, JV Rockwell, BA Druessel, JJ Newell, AC AF Kennedy, PK Wright, EM Feng, QY Cook, K Hammer, DX Thompson, CR Moloney, JV Rockwell, BA Druessel, JJ Newell, AC BE Jacques, SL Katzir, A TI Effects of laser-induced breakdown, self-focusing, and plasma shielding on ultrashort pulse propagation in the eye SO LASER-TISSUE INTERACTION VII, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser-Tissue Interaction VII CY JAN 29-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE propagation; picosecond pulse; femtosecond pulse; eye; water; laser-induced breakdown; self-focusing; plasma shielding C1 ARMSTRONG LAB,DIV OPT RADIAT,BROOKS AFB,TX 78235. NR 0 TC 3 Z9 3 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2055-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2681 BP 390 EP 401 DI 10.1117/12.239600 PG 12 WC Engineering, Biomedical; Optics SC Engineering; Optics GA BF67R UT WOS:A1996BF67R00048 ER PT B AU Thomas, RJ Hammer, DX Noojin, GD Stolarski, DJ Rockwell, BA Roach, WP AF Thomas, RJ Hammer, DX Noojin, GD Stolarski, DJ Rockwell, BA Roach, WP BE Jacques, SL Katzir, A TI Time-resolved spectroscopy of laser induced breakdown in wafer SO LASER-TISSUE INTERACTION VII, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser-Tissue Interaction VII CY JAN 29-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE laser induced breakdown; plasma; spectroscopy; nonlinear optics; pulsed lasers C1 USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 0 TC 7 Z9 7 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2055-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2681 BP 402 EP 410 DI 10.1117/12.239601 PG 9 WC Engineering, Biomedical; Optics SC Engineering; Optics GA BF67R UT WOS:A1996BF67R00049 ER PT B AU Potasek, MJ AF Potasek, MJ BE Jacques, SL Katzir, A TI Interplay of dispersive and diffractive effects of ultrashort laser pulses in nonlinear ocular media SO LASER-TISSUE INTERACTION VII, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser-Tissue Interaction VII CY JAN 29-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE ultrashort pulses; lasers; self-focusing; dispersion; nonlinear propagation; ocular media C1 USAF,ARMSTRONG LAB,DIV MATH PROD,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2055-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2681 BP 411 EP 419 DI 10.1117/12.239602 PG 9 WC Engineering, Biomedical; Optics SC Engineering; Optics GA BF67R UT WOS:A1996BF67R00050 ER PT B AU Hammer, DX Thomas, RJ Frenz, M Jansen, ED Noojin, GD Diggs, SJ Noack, J Vogel, A Rockwell, BA AF Hammer, DX Thomas, RJ Frenz, M Jansen, ED Noojin, GD Diggs, SJ Noack, J Vogel, A Rockwell, BA BE Jacques, SL Katzir, A TI Shock wave and cavitation bubble measurements of ultrashort pulse laser-induced breakdown in water SO LASER-TISSUE INTERACTION VII, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser-Tissue Interaction VII CY JAN 29-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE laser-induced breakdown (LIB); ultrashort pulses; shock wave; cavitation bubble; collateral damage; photoacoustic effects; ophthalmic microsurgery C1 USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 0 TC 6 Z9 6 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2055-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2681 BP 437 EP 448 DI 10.1117/12.239605 PG 12 WC Engineering, Biomedical; Optics SC Engineering; Optics GA BF67R UT WOS:A1996BF67R00053 ER PT B AU Thompson, CR Gerstman, BS AF Thompson, CR Gerstman, BS BE Jacques, SL Katzir, A TI Gruneisen equation of state for melanosomes irradiated by sub-nanosecond laser pulses. SO LASER-TISSUE INTERACTION VII, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Laser-Tissue Interaction VII CY JAN 29-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers C1 OPERAT TECHNOL CORP,DIV OPT RADIAT,ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2055-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2681 BP 449 EP 459 DI 10.1117/12.239606 PG 11 WC Engineering, Biomedical; Optics SC Engineering; Optics GA BF67R UT WOS:A1996BF67R00054 ER PT J AU Gerstman, BS Thompson, CR Jacques, SL Rogers, ME AF Gerstman, BS Thompson, CR Jacques, SL Rogers, ME TI Laser induced bubble formation in the retina SO LASERS IN SURGERY AND MEDICINE LA English DT Article DE Arrhenius; bubble; damage; ED(50); fluence; laser; minimal visible lesion; retina; thermal damage; threshold; vaporization AB Background and Objective: The immediate thermodynamic effects of absorption of a laser pulse in the retina are theoretically studied to understand underlying physical damage mechanisms at threshold fluences, Damage is most likely to occur at threshold levels in the retinal pigment epithelium due to the strong absorption by the melanosomes. Methods: The retinal pigment epithelium is modeled as an aqueous environment with absorption occurring at small spherical sites with absorption coefficients representative of melanosomes. For laser pulse durations of less than 10(-6) seconds, heat conduction is negligible during energy deposition and the resulting large energy density in the melanosomes will cause vaporization of the medium immediately surrounding a melanosome. Results: We developed expressions for calculating the size of bubbles produced as a function of pulse characteristics and melanosome properties. We show that for pulse durations between 10(-6) and 10(-9) seconds, bubble formation will occur for laser fluences that are smaller than those required to cause Arrhenius-type thermal damage. Conclusion: Bubble formation is likely to be the mechanism of threshold damage to the retina for laser pulses durations in the time regime between 10(-6) and 10(-9) seconds. (C) 1996 Wiley-Liss, Inc. C1 USAF,ARMSTRONG LAB,BROOKS AFB,TX 78235. UNIV TEXAS,MD ANDERSON CANC CTR,LASER BIOL RES LAB,HOUSTON,TX 77030. RP Gerstman, BS (reprint author), FLORIDA INT UNIV,DEPT PHYS,UNIV PK,MIAMI,FL 33199, USA. NR 20 TC 70 Z9 71 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0196-8092 J9 LASER SURG MED JI Lasers Surg. Med. PY 1996 VL 18 IS 1 BP 10 EP 21 DI 10.1002/(SICI)1096-9101(1996)18:1<10::AID-LSM2>3.0.CO;2-U PG 12 WC Dermatology; Surgery SC Dermatology; Surgery GA TM763 UT WOS:A1996TM76300002 PM 8850461 ER PT B AU Kendig, KL Gibala, R Majumdar, BS Miracle, DB Warrier, SG AF Kendig, KL Gibala, R Majumdar, BS Miracle, DB Warrier, SG BE Lee, EW Frazier, WE Kim, NJ Jata, K TI Nanoindentation as a probe for residual stress SO LIGHT WEIGHT ALLOYS FOR AEROSPACE APPLICATIONS IV LA English DT Proceedings Paper CT 4th Light Weight Alloys for Aerospace Applications Symposium, at the 1997 TMS Annual Meeting CY FEB 10-13, 1997 CL ORLANDO, FL SP Minerals Met & Mat Soc, Struct Mat Div, Non Ferrous Met Comm AB This work explores the use of nanoindentation as a tool for probing residual stresses in materials. The effect of applied or residual stresses on measured indentation hardness is established citing an example of indentation of a high C steel with varied applied stress and by giving indentation hardness results for alpha-brass residually stressed by rolling. The Von Mises yield criterion was used to establish a quantitative relation between stress and measured hardness by examining microindentation and nanoindentation hardness results for a residually stressed Mo/Ti multilayer. Nanoindentation results for a SiC/Ti-15V-3Al-3Cr-3Sn continuously reinforced metal matrix composite are consistent with relaxation of the bulk residual stresses at the surface due to debonding of the fiber-matrix interface where it intersects the free surface. C1 USAF, Wright Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RP Kendig, KL (reprint author), USAF, Wright Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-328-7 PY 1996 BP 299 EP 310 PG 12 WC Engineering, Aerospace; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Engineering; Materials Science; Metallurgy & Metallurgical Engineering GA BK35T UT WOS:000071897500028 ER PT S AU Podojil, GM Farmer, BL Bunning, TJ Pachter, R Adams, WW AF Podojil, GM Farmer, BL Bunning, TJ Pachter, R Adams, WW BE Bunning, TJ Chen, SH Hawthorne, W Kajiyama, T Koide, N TI Molecular dynamics of side chain liquid crystalline polysiloxanes SO LIQUID CRYSTALS FOR ADVANCED TECHNOLOGIES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Liquid Crystals for Advanced Technologies, at the 1996 MRS Spring Meeting CY APR 08-11, 1996 CL SAN FRANCISCO, CA SP Mat Res Soc AB Molecular dynamics simulations have been used to characterize the development and longevity of associations between cholesterol and biphenyl mesogens when attached to linear siloxane oligomers by flexible spacer groups. Single substituents, alternating substituents, and diblock and triblock arrangements of the substituents were considered. The backbone and spacer groups allow sufficient flexibility that long-lived associations between cholesterol mesogens form quite rapidly, as do more fluid associations between biphenyl and cholesterol mesogens. The study of the individual mesogen interactions and how these lead to larger scale aligned structures has provided insight into the nature of the liquid crystalline state in these materials. C1 WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Podojil, GM (reprint author), UNIV VIRGINIA,DEPT MAT SCI & ENGN,CHARLOTTESVILLE,VA 22903, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 SN 0272-9172 BN 1-55899-328-2 J9 MATER RES SOC SYMP P PY 1996 VL 425 BP 125 EP 130 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA BG81T UT WOS:A1996BG81T00016 ER PT S AU Mather, PT Stuber, HR Chaffee, KP Haddad, TS RomoUribe, A Lichtenhan, JD AF Mather, PT Stuber, HR Chaffee, KP Haddad, TS RomoUribe, A Lichtenhan, JD BE Bunning, TJ Chen, SH Hawthorne, W Kajiyama, T Koide, N TI A novel rheological microscope for flow studies of thermotropic polymers and polymer blends: Droplet deformation SO LIQUID CRYSTALS FOR ADVANCED TECHNOLOGIES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Liquid Crystals for Advanced Technologies, at the 1996 MRS Spring Meeting CY APR 08-11, 1996 CL SAN FRANCISCO, CA SP Mat Res Soc AB We have recently begun investigating the rheological behavior of blends containing thermotropic liquid crystalline polymers (LCPs) and isotropic polymers. To aid us in our studies, we have designed a unique instrument for simultaneous visualization of morphology evolution and rheological measurements. Rectilinear shear is used, with a top glass bar being translated relative to a fixed bottom glass bar. The sample is heated by conduction from mica heaters embedded in the substrate materials supporting the bounding glass bars. Shear forces are obtained by measuring the (small) deflection of the bottom glass bar and heating assembly which is designed to be slightly compliant in the flow direction while rigid in direction normal to the sample. RP Mather, PT (reprint author), USAF,PHILLIPS LAB,PROP SCI DIV,EDWARDS AFB,CA 93524, USA. NR 0 TC 7 Z9 7 U1 1 U2 1 PU MATERIALS RESEARCH SOCIETY PI WARRENDALE PA 506 KEYSTONE DRIVE, WARRENDALE, PA 15088-7563 SN 0272-9172 BN 1-55899-328-2 J9 MATER RES SOC SYMP P PY 1996 VL 425 BP 137 EP 142 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA BG81T UT WOS:A1996BG81T00018 ER PT B AU Lincoln, JW AF Lincoln, JW BE Schmitt, G Bauer, J Magurany, CJ Hurley, C Kliger, H TI Aging aircraft issues in the United States Air Force SO MATERIALS AND PROCESS CHALLENGES: AGING SYSTEMS, AFFORDABILITY, ALTERNATIVE APPLICATIONS, BOOKS 1 AND 2 SE SCIENCE OF ADVANCED MATERIALS AND PROCESS ENGINEERING SERIES LA English DT Proceedings Paper CT 41st International SAMPE Symposium and Exhibition - Materials and Process Challenges: Aging Systems, Affordability, Alternative Applications CY MAR 24-28, 1996 CL ANAHEIM, CA SP Soc Adv Mat & Proc Engn C1 AERONAUT SYST CTR,WRIGHT PATTERSON AFB,OH. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 BN 0-938994-74-3 J9 SCI ADV MAT PY 1996 VL 41 IS BK 1-2 BP 42 EP 53 PG 12 WC Engineering, Aerospace; Engineering, Chemical; Materials Science, Characterization & Testing; Materials Science, Composites SC Engineering; Materials Science GA BG16F UT WOS:A1996BG16F00005 ER PT B AU Rudd, JL AF Rudd, JL BE Schmitt, G Bauer, J Magurany, CJ Hurley, C Kliger, H TI Aging aircraft technology development in the United States Air Force SO MATERIALS AND PROCESS CHALLENGES: AGING SYSTEMS, AFFORDABILITY, ALTERNATIVE APPLICATIONS, BOOKS 1 AND 2 SE SCIENCE OF ADVANCED MATERIALS AND PROCESS ENGINEERING SERIES LA English DT Proceedings Paper CT 41st International SAMPE Symposium and Exhibition - Materials and Process Challenges: Aging Systems, Affordability, Alternative Applications CY MAR 24-28, 1996 CL ANAHEIM, CA SP Soc Adv Mat & Proc Engn DE aging aircraft; structural integrity; life extension C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 1 U1 0 U2 0 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 BN 0-938994-74-3 J9 SCI ADV MAT PY 1996 VL 41 IS BK 1-2 BP 54 EP 64 PG 11 WC Engineering, Aerospace; Engineering, Chemical; Materials Science, Characterization & Testing; Materials Science, Composites SC Engineering; Materials Science GA BG16F UT WOS:A1996BG16F00006 ER PT B AU Russell, JD Kardos, JL AF Russell, JD Kardos, JL BE Schmitt, G Bauer, J Magurany, CJ Hurley, C Kliger, H TI Kinetics of imidization and crosslinking for AFR700B polyimide SO MATERIALS AND PROCESS CHALLENGES: AGING SYSTEMS, AFFORDABILITY, ALTERNATIVE APPLICATIONS, BOOKS 1 AND 2 SE SCIENCE OF ADVANCED MATERIALS AND PROCESS ENGINEERING SERIES LA English DT Proceedings Paper CT 41st International SAMPE Symposium and Exhibition - Materials and Process Challenges: Aging Systems, Affordability, Alternative Applications CY MAR 24-28, 1996 CL ANAHEIM, CA SP Soc Adv Mat & Proc Engn DE polyimides; reaction kinetics C1 USAF,WRIGHT LAB,MAT DIRECTORATE,MLBC,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 BN 0-938994-74-3 J9 SCI ADV MAT PY 1996 VL 41 IS BK 1-2 BP 120 EP 134 PG 15 WC Engineering, Aerospace; Engineering, Chemical; Materials Science, Characterization & Testing; Materials Science, Composites SC Engineering; Materials Science GA BG16F UT WOS:A1996BG16F00012 ER PT B AU Ciminelli, DL Kearns, KM Ragland, WR AF Ciminelli, DL Kearns, KM Ragland, WR BE Schmitt, G Bauer, J Magurany, CJ Hurley, C Kliger, H TI Vapor grown carbon fiber (VGCF) composites SO MATERIALS AND PROCESS CHALLENGES: AGING SYSTEMS, AFFORDABILITY, ALTERNATIVE APPLICATIONS, BOOKS 1 AND 2 SE SCIENCE OF ADVANCED MATERIALS AND PROCESS ENGINEERING SERIES LA English DT Proceedings Paper CT 41st International SAMPE Symposium and Exhibition - Materials and Process Challenges: Aging Systems, Affordability, Alternative Applications CY MAR 24-28, 1996 CL ANAHEIM, CA SP Soc Adv Mat & Proc Engn DE vapor grown carbon fibers; composites; processing; low cost C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 BN 0-938994-74-3 J9 SCI ADV MAT PY 1996 VL 41 IS BK 1-2 BP 496 EP 501 PG 6 WC Engineering, Aerospace; Engineering, Chemical; Materials Science, Characterization & Testing; Materials Science, Composites SC Engineering; Materials Science GA BG16F UT WOS:A1996BG16F00046 ER PT B AU Guyt, C AF Guyt, C BE Schmitt, G Bauer, J Magurany, CJ Hurley, C Kliger, H TI Delamination effects in fuselage crack patching SO MATERIALS AND PROCESS CHALLENGES: AGING SYSTEMS, AFFORDABILITY, ALTERNATIVE APPLICATIONS, BOOKS 1 AND 2 SE SCIENCE OF ADVANCED MATERIALS AND PROCESS ENGINEERING SERIES LA English DT Proceedings Paper CT 41st International SAMPE Symposium and Exhibition - Materials and Process Challenges: Aging Systems, Affordability, Alternative Applications CY MAR 24-28, 1996 CL ANAHEIM, CA SP Soc Adv Mat & Proc Engn DE aging aircraft; bonded repair; delaminations C1 USAF ACAD,DEPT MECH ENGN,COLORADO SPRINGS,CO. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 BN 0-938994-74-3 J9 SCI ADV MAT PY 1996 VL 41 IS BK 1-2 BP 903 EP 914 PG 12 WC Engineering, Aerospace; Engineering, Chemical; Materials Science, Characterization & Testing; Materials Science, Composites SC Engineering; Materials Science GA BG16F UT WOS:A1996BG16F00087 ER PT B AU Fredell, R Guyt, C Mazza, J Knighton, S Collas, E AF Fredell, R Guyt, C Mazza, J Knighton, S Collas, E BE Schmitt, G Bauer, J Magurany, CJ Hurley, C Kliger, H TI Repair of C-5 fuselage cracking with bonded GLARE patches SO MATERIALS AND PROCESS CHALLENGES: AGING SYSTEMS, AFFORDABILITY, ALTERNATIVE APPLICATIONS, BOOKS 1 AND 2 SE SCIENCE OF ADVANCED MATERIALS AND PROCESS ENGINEERING SERIES LA English DT Proceedings Paper CT 41st International SAMPE Symposium and Exhibition - Materials and Process Challenges: Aging Systems, Affordability, Alternative Applications CY MAR 24-28, 1996 CL ANAHEIM, CA SP Soc Adv Mat & Proc Engn DE aging aircraft; GLARE 2; bonded composite repair C1 USAF ACAD,WASHINGTON,DC. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 BN 0-938994-74-3 J9 SCI ADV MAT PY 1996 VL 41 IS BK 1-2 BP 962 EP 974 PG 13 WC Engineering, Aerospace; Engineering, Chemical; Materials Science, Characterization & Testing; Materials Science, Composites SC Engineering; Materials Science GA BG16F UT WOS:A1996BG16F00092 ER PT B AU Fogg, RD AF Fogg, RD BE Neff, JA Javidi, B TI Automatic layout of integrated-optic time-of-flight circuits SO MATERIALS, DEVICES, AND SYSTEMS FOR OPTOELECTRONIC PROCESSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Materials, Devices, and Systems for Optoelectronic Processing CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE digital optical computing; optical computing; optical computer; layout; integrated-optic circuits; placement; routing; CAD tool AB This work describes the architecture and algorithms used in the computer-aided design-tool developed for the automatic layout of integrated-optic, time-of-flight circuit designs. As in VLSI circuit layout, total wire length and chip area minimization are the goals in the layout of time-of-flight circuits. However, there are two major differences between the layout of time of flight circuits and VLSI circuits. First, the interconnection lengths of time-of-flight designs are exactly specified in order to achieve the necessary delays for signal synchronization. Secondly, the switching elements are 120 times longer than they are wide. This highly astigmatic aspect ratio causes severe constraints on how and where the switches are placed. Assuming the continued development of corner turning mirrors allows the use of a parallel, row-based device placement architecture and a rectangular, fixed-grid track system for the connecting paths. The layout process proceeds in two steps. The first step involves the use of a partial circuit graph representation to place the elements in rows, oriented in the direction of the signal flow. After iterative improvement of the placement, the second step proceeds with the routing of the connecting, paths. The main problem in the automatic layout of time-of-flight circuits is achieving the correct path lengths without overlapping previously routed paths. This problem is solved by taking advantage of a certain degree of variability present in each path, allowing the use of simple heuristics to circumvent previously routed paths. RP Fogg, RD (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2236-3 J9 P SOC PHOTO-OPT INS PY 1996 VL 2848 BP 133 EP 144 DI 10.1117/12.256148 PG 12 WC Optics SC Optics GA BG67R UT WOS:A1996BG67R00013 ER PT B AU Cooper, WL Lavine, AS AF Cooper, WL Lavine, AS BE Stephenson, DA Stevenson, DA Stevenson, R TI Grinding process size effect and kinematics numerical analysis SO MATERIALS ISSUES IN MACHINING - III AND THE PHYSICS OF MACHINING PROCESSES - III LA English DT Proceedings Paper CT Symposium on Materials Issues in Machining - III, at the Fall Meeting of the Minerals-Metals-and-Materials-Society CY OCT 06-10, 1996 CL CINCINNATI, OH SP Minerals Met & Mat Soc AB The present work has developed numerical codes that simulate steady-state grinding process kinematics. The modeling procedure entails: identifying the sizes, shapes and positions of individual abrasive grains on the wheel surface; geometrically calculating the abrasive grains' depth of cut distributions along the grinding zone as they pass through the grinding zone (neglecting wheel, abrasive grain and workpiece deflections); using an empirical relationship to relate the abrasive grains' geometric depths of cut to the grains' actual depths of cut; and updating the workpiece surface to account for material removal. The resulting data include the abrasive grains' average depth of cut distribution along the grinding zone, stock removal depth, stock removal rate, grinding zone shape, grinding zone length, percentage of grains impacting the workpiece, grain-workpiece impact frequency, etc. This paper examines a number of steady-state grinding processes. C1 USAF, Wright Lab, Eglin AFB, FL 32542 USA. RP Cooper, WL (reprint author), USAF, Wright Lab, Eglin AFB, FL 32542 USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-345-7 PY 1996 BP 97 EP 113 PG 17 WC Engineering, Manufacturing; Engineering, Mechanical; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BM48G UT WOS:000078872300007 ER PT J AU Maruyama, B Shaw, LL Waterbury, MC Miracle, DB AF Maruyama, B Shaw, LL Waterbury, MC Miracle, DB TI Automated deformation mapping in metal matrix composites SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE deformation mapping; metal matrix composites ID INTERFACE; BEHAVIOR AB A new technique, automated deformation mapping (ADM), has been developed and used to map the mechanical response of the fiber and matrix in a single-fiber SiC SCS-6/Ti-6Al-4V composite. The technique employs a novel combination of fiducial gridding and computer-aided image analysis using cross-correlation for feature location. Two problems in transverse tensile loading were addressed: interface separation and matrix flow near the fiber. Fiber/matrix separation was detected at a composite stress of 200 MPa. Matrix flow was found to be consistent with finite element analysis of the component. C1 SYSTRAN CO,DAYTON,OH 45432. UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432. MAT DIRECTORATE,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP Maruyama, B (reprint author), NATL INST STAND & TECHNOL,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 30 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD JAN PY 1996 VL 205 IS 1-2 BP 101 EP 109 DI 10.1016/0921-5093(95)09974-3 PG 9 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TY790 UT WOS:A1996TY79000011 ER PT S AU McKenney, A Pachter, R Patnaik, S Adams, W AF McKenney, A Pachter, R Patnaik, S Adams, W BE Kaxiras, E Joannopoulos, J Vashishta, P Kalia, RK TI Molecular dynamics simulations of a siloxane-based liquid crystal using an improved fast multipole algorithm implementation SO MATERIALS THEORY, SIMULATIONS, AND PARALLEL ALGORITHMS SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Materials Theory, Simulations, and Parallel Algorithms CY NOV 27-DEC 01, 1995 CL BOSTON, MA SP Mat Res Soc, Natl Sci Fdn, USN, Off Naval Res C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 3 Z9 3 U1 1 U2 2 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-311-8 J9 MATER RES SOC SYMP P PY 1996 VL 408 BP 99 EP 105 PG 7 WC Computer Science, Theory & Methods; Materials Science, Multidisciplinary SC Computer Science; Materials Science GA BF97F UT WOS:A1996BF97F00016 ER PT S AU Wang, ZQ Day, P Pachter, R AF Wang, ZQ Day, P Pachter, R BE Kaxiras, E Joannopoulos, J Vashishta, P Kalia, RK TI DFT study of the monocyclic and bicyclic ring geometries of C-20 SO MATERIALS THEORY, SIMULATIONS, AND PARALLEL ALGORITHMS SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Materials Theory, Simulations, and Parallel Algorithms CY NOV 27-DEC 01, 1995 CL BOSTON, MA SP Mat Res Soc, Natl Sci Fdn, USN, Off Naval Res C1 USAF,WRIGHT LAB,MLPJ,WL,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-311-8 J9 MATER RES SOC SYMP P PY 1996 VL 408 BP 579 EP 584 PG 6 WC Computer Science, Theory & Methods; Materials Science, Multidisciplinary SC Computer Science; Materials Science GA BF97F UT WOS:A1996BF97F00085 ER PT B AU Khot, NS Veley, DE Bolonkin, AA AF Khot, NS Veley, DE Bolonkin, AA BE Varadan, VV Chandra, J TI Design of smart structures with bounded controls SO MATHEMATICS AND CONTROL IN SMART STRUCTURES: SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Mathematics and Control in Smart Structures CY FEB 26-29, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan C1 WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2090-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2715 BP 173 EP 182 DI 10.1117/12.240796 PG 10 WC Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Optics SC Engineering; Materials Science; Optics GA BG01W UT WOS:A1996BG01W00015 ER PT J AU Venugopal, S Mannan, SL Prasad, YVRK AF Venugopal, S Mannan, SL Prasad, YVRK TI Optimization of cold and warm workability in 304 stainless steel using instability maps SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID DEFORMATION-INDUCED TRANSFORMATION; STRAIN RATE SENSITIVITY; PROCESSING MAP; HOT-WORKING; DYNAMIC RECRYSTALLIZATION; AISI 304L; BEHAVIOR; COMPRESSION; STATE; FLOW AB The deformation characteristics of stainless steel type AISI 3O4 under compression in the temperature range 20 degrees C to 600 degrees C and strain-rate range 0.001 to 100 s(-1) have been studied with a view to characterizing the flow instabilities occurring in the microstructure. At strain rates less than 5 s(-1), 304 stainless steel exhibits flow localization, whereas dynamic strain aging occurs at intermediate temperatures and below 0.5 s(-1). At room temperatures and strain rates less than 10 s(-1), martensite formation is observed. To avoid the preceding microstructural instabilities, cold and warm working should be carried out at strain rates greater than 5 s(-1). The continuum criterion, developed on the basis of the principles of maximum rate of entropy production and separability of the dissipation function, predicts accurately all the preceding instability features. C1 INDIRA GANDHI CTR ATOM RES, DIV MAT DEV, KALPAKKAM 603102, TAMIL NADU, INDIA. INDIAN INST SCI, DEPT MET, BANGALORE 560012, KARNATAKA, INDIA. RP USAF, WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. NR 51 TC 7 Z9 7 U1 0 U2 2 PU SPRINGER PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 USA SN 1073-5623 EI 1543-1940 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD JAN PY 1996 VL 27 IS 1 BP 119 EP 126 DI 10.1007/BF02647752 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA TN904 UT WOS:A1996TN90400011 ER PT J AU Yang, XQ Xie, Q Ni, YQ Huang, SS AF Yang, XQ Xie, Q Ni, YQ Huang, SS TI ENSO cycle in a coupled ocean-atmosphere model and its negative feedback mechanism SO METEOROLOGY AND ATMOSPHERIC PHYSICS LA English DT Article ID NINO SOUTHERN OSCILLATION; SEA-SURFACE TEMPERATURE; EL-NINO; TROPICAL PACIFIC; INTERANNUAL VARIABILITY; CIRCULATION; SYSTEM; GCM AB A coupled ocean-atmosphere anomaly model has been developed for simulating ENSO cycle and its mechanism-study in this paper. After a long model run, the coupled model is successful in demonstrating ENSO-like irregular interannual variability and corresponding horizontal spatial structures. Based on the simulated results, the dynamics and the thermodynamics of the model ENSO cycle have been investigated, and in particular the negative feedback mechanisms that act to oppose instability of air-sea interaction, inducing termination of warm and cold events, have been examined. A derailed analysis of the oceanic wave dynamical properties and heat budget of the SST changes in. representative cycle suggests that the negative feedback mechanism to check the unstable growth of a warm event obviously differs from that of a cold event. The mechanism that induces decay and termination of a cold event is closely related to the negative, delayed feedback effect produced by the oceanic dynamical wave reflection at the western boundary. However, independent of the wave reflection effect: the negative feedback mechanism by which the coupled system returns from a warm event is associated with a slowly eastward-propagating coupling mode. Accompanied with the strong unstable development of the equatorial positive SST anomaly the anomalous upwelling of cold water generated off the equator and the nonlinear anomalous meridional advection generated in the equator west of instability area jointly restrain the instability and finally plunge the system from a mature warm phase into a weak cold phase. A comparison between the results from the present model and the previous works is also discussed in this paper. C1 USAF,DEPT METEOROL,INST METEOROL,NANJING 211101,PEOPLES R CHINA. RP Yang, XQ (reprint author), NANJING UNIV,DEPT ATMOSPHER SCI,NANJING 210093,PEOPLES R CHINA. RI Yang, Michael/G-9716-2013 NR 36 TC 1 Z9 2 U1 0 U2 1 PU SPRINGER-VERLAG WIEN PI VIENNA PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA SN 0177-7971 J9 METEOROL ATMOS PHYS JI Meteorol. Atmos. Phys. PY 1996 VL 61 IS 3-4 BP 153 EP 186 DI 10.1007/BF01025703 PG 34 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA WB348 UT WOS:A1996WB34800004 ER PT B AU Christensen, CJ Bright, VM Grantham, JW Comtois, JH AF Christensen, CJ Bright, VM Grantham, JW Comtois, JH BE Motamedi, ME Bailey, W TI Control of a phase-locked laser diode array using piston micromirrors SO MICROELECTRONIC STRUCTURES AND MEMS FOR OPTICAL PROCESSING II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Microelectronic Structures and MEMS for Optical Processing II CY OCT 10-15, 1996 CL AUSTIN, TX SP Soc Photo Opt Instrumentat Engineers, Semiconductor Equipment & Mat Int, Natl Inst Standards & Technol, Solid State Technol, Sandia Natl Labs DE micromirror; micromachining; laser diode C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 2 Z9 2 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2279-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2881 BP 26 EP 34 PG 9 WC Optics SC Optics GA BG41N UT WOS:A1996BG41N00003 ER PT B AU Reid, JR Bright, VM Comtois, JH AF Reid, JR Bright, VM Comtois, JH BE Chau, K Roop, RM TI Force measurements of polysilicon thermal micro-actuators SO MICROMACHINED DEVICES AND COMPONENTS II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 2nd Conference on Micromachined Devices and Components, at the SPIE 1996 Symposium on Micromachining and Microfabrication CY OCT 14-15, 1996 CL AUSTIN, TX SP Soc Photo Opt Instrumentat Engineers, Semiconductor Equipment & Mat Int, Natl Inst Standards & Technol, Solid State Technol, Sandia Natl Labs DE micro-electro-mechanical systems; actuators; micromachining C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 33 Z9 33 U1 1 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2280-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2882 BP 296 EP 306 DI 10.1117/12.250716 PG 11 WC Optics SC Optics GA BG41P UT WOS:A1996BG41P00031 ER PT J AU Hansen, RC Gammon, D AF Hansen, RC Gammon, D TI Standing waves in scan impedance: E-plane finite array SO MICROWAVE AND OPTICAL TECHNOLOGY LETTERS LA English DT Article DE phased arrays; electronic scanning; finite arrays; edge effects; scan impedance AB The standing-wave behavior of scan impedance in a semiinfinite dipole army was preciously shown for an H-plane scan. Computer simulations show larger-amplitude standing waves for an E-plane scan. Addition Of a screen decreases the oscillations for the H plane, but unexpectedly increases them for the E-plane scan. (C) 1996 John Wiley & Sons, Inc. C1 USAF,WASHINGTON,DC 20330. NR 0 TC 5 Z9 5 U1 0 U2 1 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0895-2477 J9 MICROW OPT TECHN LET JI Microw. Opt. Technol. Lett. PD JAN PY 1996 VL 11 IS 1 BP 26 EP 32 DI 10.1002/(SICI)1098-2760(199601)11:1<26::AID-MOP8>3.0.CO;2-R PG 7 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA TL346 UT WOS:A1996TL34600008 ER PT B AU White, GB Huson, ML AF White, GB Huson, ML GP IEEE TI A peer-based hardware protocol for intrusion detection systems SO MILCOM 96, CONFERENCE PROCEEDINGS, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Military Communications Conference (MILCOM 96) CY OCT 21-24, 1996 CL MCLEAN, VA SP IEEE Commun Soc, Armed Forces Commun & Electr Assoc, US Dept Def AB A number of intrusion detection systems have been developed to detect intrusive activity on individual hosts and networks. The systems developed rely almost-exclusively on a software approach to intrusion detection analysis and response. In addition, the network systems developed apply a centralized approach to the detection of intrusive activity. The problems introduced by this approach are twofold First the centralization of these functions becomes untenable as the size of the network increases. A heirachical network organization incorporating Internetwork Security Monitors (ISMs) has been proposed as a solution to this problem. However, the introduction of intermediate security systems increases the number of potential targets and introduces communication delays which are unacceptable for high bandwidth data transfers. Second, and more importantly, the combination of centralization and software implementation as an approach to network intrusion detection introduces a dangerous vulnerability. As intruders gain access to the system, they target the security software itself and the centralization ensures the compromise of the entire network. The solution to these problems is a hardware implementation of a decentralized approach to intrusion detection. This paper describes the hardware platform necessary to implement such a system. It also proposes an intrusion detection protocol which would be used by this hardware to communicate relevant intrusive activity events between heterogeneous systems connected in a network or internetwork. This work is based on the Cooperating Security Mangers; a peer-based approach to intrusion detection developed at Texas A&M University. RP White, GB (reprint author), USAF ACAD,DEPT COMP SCI,COLORADO SPRINGS,CO 80840, USA. RI White, Gregory/K-6481-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3683-6 PY 1996 BP 468 EP 472 PG 5 WC Engineering, Aerospace; Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Computer Science; Telecommunications GA BG78G UT WOS:A1996BG78G00093 ER PT B AU Goldstein, JS Reed, IS Smith, RN AF Goldstein, JS Reed, IS Smith, RN GP IEEE TI Low-complexity subspace selection for partial adaptivity SO MILCOM 96, CONFERENCE PROCEEDINGS, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Military Communications Conference (MILCOM 96) CY OCT 21-24, 1996 CL MCLEAN, VA SP IEEE Commun Soc, Armed Forces Commun & Electr Assoc, US Dept Def AB This paper introduces low-complexity frequency domain approximations of optimal partially adaptive sensor array processors for space communications. Space-segment sensor arrays, for military and other critical communications links, require adaptivity to provide ECCM and mitigate interference. The size, weight, and power restrictions of such platforms, however, prohibit full adaptivity. The design of low-complexity reduced-rank processors are investigated in this paper. It is demonstrated that the performance of full-rank adaptive arrays is obtainable by low-rank processors through the use of frequency domain implementations of a cross-spectral metric. RP Goldstein, JS (reprint author), USAF,ROME LAB,SPACE COMMUN BRANCH,525 BROOKS RD,ROME,NY 13441, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3683-6 PY 1996 BP 597 EP 601 PG 5 WC Engineering, Aerospace; Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Computer Science; Telecommunications GA BG78G UT WOS:A1996BG78G00118 ER PT B AU Medley, MJ Saulnier, GJ Das, PK AF Medley, MJ Saulnier, GJ Das, PK GP IEEE TI Interference suppression using cosine-modulated filter banks SO MILCOM 96, CONFERENCE PROCEEDINGS, VOLS 1-3 LA English DT Proceedings Paper CT 1996 IEEE Military Communications Conference (MILCOM 96) CY OCT 21-24, 1996 CL MCLEAN, VA SP IEEE Commun Soc, Armed Forces Commun & Electr Assoc, US Dept Def AB In order to mitigate narrow-band interference in spread spectrum communications systems, novel communications receivers incorporating transform domain filtering techniques are designed. In this paper, lapped transforms are used to transform th received data signal to the transform domain wherein adaptive excision is performed. Transform domain detection algorithms, which yield bit decisions based on the remaining signal energy, are analyzed and, together with excision, are employed on a block-by-block basis to suppress single-tone interference. System performance is analytically quantified in terms of the overall system bit error rate (BER). Subsequent results are presented for a variety of channel conditions and compared to those obtained using excision algorithms based on orthonormaI block transforms [3]. C1 RENSSELAER POLYTECH INST,DEPT ELECT COMP & SYST ENGN,TROY,NY 12180. RP Medley, MJ (reprint author), USAF,ROME LAB,525 BROOKS RD,ROME,NY 13441, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3683-6 PY 1996 BP 1045 EP 1049 PG 5 WC Engineering, Aerospace; Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Computer Science; Telecommunications GA BG78G UT WOS:A1996BG78G00204 ER PT J AU Siem, FM AF Siem, FM TI The use of response latencies to enhance self-report personality measures SO MILITARY PSYCHOLOGY LA English DT Article; Proceedings Paper CT 1992 Annual Meeting of the American-Psychological-Association CY MAY 02-07, 1992 CL WASHINGTON, DC SP Amer Psychol Assoc ID INFORMATION; SCHEMA; MMPI AB Previous research demonstrated that latencies to personality inventory items explain unique variance in criteria such as peer ratings of personality (Popham & Holden, 1990). This research was designed to determine if such latencies, reflecting a construct called the self-schema (Markus, 1977), would contribute to the prediction of pilot training performance. Latencies and scale scores from items on the Minnesota Multiphasic Personality Inventory (MMPI) were examined for a sample of U.S. Air Force pilot candidates. The results indicated that, as in previous studies, scale scores and response latencies tended to be correlated, although the pattern was not consistent across all trait dimensions. Furthermore, response latency measures for two trait dimensions added incremental validity over inventory scores alone to the prediction of flying training performance. The results were interpreted as providing support for further investigation of the utility of response latencies as indicants of the self-schema that may be useful for personnel selection. RP Siem, FM (reprint author), ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 21 TC 12 Z9 12 U1 1 U2 2 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 1 BP 15 EP 27 DI 10.1207/s15327876mp0801_2 PG 13 WC Psychology, Multidisciplinary SC Psychology GA TN883 UT WOS:A1996TN88300002 ER PT J AU Carretta, TR Ree, MJ AF Carretta, TR Ree, MJ TI Factor structure of the air force officer qualifying test: Analysis and comparison SO MILITARY PSYCHOLOGY LA English DT Article ID JOB-PERFORMANCE; FIT INDEXES; VALIDITY; PREDICTORS AB The Air Force Officer Qualifying Test (AFOQT) is used to qualify men and women for commissions in the Air Force, classify them for pilot and navigator jobs, and award Reserve Officer Training Corps (ROTC) scholarships. Despite more than three decades of use, little published literature exists outside of Air Force technical reports, which do not receive wide distribution. One of the most important details about a test battery is which factors it measures. To determine this, several factor models were tested with structural equations. Most of the models were hierarchical with general cognitive ability (g) as the highest factor. A model with hierarchical g and the five lower order factors of verbal, math, spatial, aircrew, and perceptual speed fit the data best. The factor structure of the AFOOT was compared to the factor structure of the Armed Services Vocational Aptitude Battery (ASVAB), the enlistment qualification test battery. The AFOQT was found to contain a greater number of factors than did the ASVAB. Given the confirmed AFOOT factor structure, four methods of increasing its validity are proposed and discussed. These methods are increasing reliability of the tests, increasing the g saturation, adding job knowledge tests, and adding additional valid factors. RP Carretta, TR (reprint author), ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 41 TC 27 Z9 28 U1 2 U2 2 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 1 BP 29 EP 42 DI 10.1207/s15327876mp0801_3 PG 14 WC Psychology, Multidisciplinary SC Psychology GA TN883 UT WOS:A1996TN88300003 ER PT J AU Lance, CE Stewart, AM Carretta, TR AF Lance, CE Stewart, AM Carretta, TR TI On the treatment of outliers in cognitive and psychomotor test data SO MILITARY PSYCHOLOGY LA English DT Article ID REACTION-TIME; CLASSIFICATION; SELECTION; LAWS AB Authors of many statistical texts and review articles have pointed to the possible adverse effects that outliers can have on the calculation of sample statistics and have suggested several methods for detecting and treating outliers. We investigated two different methods-data censoring and transformation-for treating outliers in aptitude test data at the item level and total-score level and their effects on the internal consistency and predictive validity of six computerized tests being evaluated by the U.S. Air Force. Results from our sample of more than 2,000 pilot training candidates indicated that neither outlier treatment method at either level of analysis had significant effects on the tests' internal consistencies or predictive validities. Possible reasons for these findings include the frequency with which outliers occur and the robustness of linear modeling methods. C1 UNIV GEORGIA,DEPT PSYCHOL,ATHENS,GA 30602. RP Lance, CE (reprint author), ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 35 TC 1 Z9 1 U1 2 U2 4 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 1 BP 43 EP 58 DI 10.1207/s15327876mp0801_4 PG 16 WC Psychology, Multidisciplinary SC Psychology GA TN883 UT WOS:A1996TN88300004 ER PT J AU Roberts, HE Skinner, J AF Roberts, HE Skinner, J TI Gender and racial equity of the air force officer qualifying test in officer training school selection decisions SO MILITARY PSYCHOLOGY LA English DT Article; Proceedings Paper CT 10th Annual Conference of the Society-for-Industrial-and-Organizational-Psychology CY MAY, 1995 CL ORLANDO, FL SP Soc Ind & Org Psychol ID DIFFERENTIAL VALIDITY; FAIRNESS AB Using Cleary's (1968) model of test bias,relations between aptitude scores and training performance were evaluated for race and gender subgroups of military officer candidates. Regression analyses revealed level bias with minority performance being overpredicted by a small and constant amount at all aptitude levels, suggesting that test usage results in higher selection rates for female and Black cadets. These results are consistent with the literature in education, industry, and prior studies conducted in the military. C1 ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,BROOKS AFB,TX 78235. AMER PSYCHOL ASSOC,SCI DIRECTORATE,WASHINGTON,DC 20036. NR 45 TC 11 Z9 11 U1 1 U2 4 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 2 BP 95 EP 113 DI 10.1207/s15327876mp0802_4 PG 19 WC Psychology, Multidisciplinary SC Psychology GA UC876 UT WOS:A1996UC87600004 ER PT J AU Bennett, W Ruck, HW Page, RC AF Bennett, W Ruck, HW Page, RC TI Military occupational analysis - Preface SO MILITARY PSYCHOLOGY LA English DT Editorial Material RP Bennett, W (reprint author), ARMSTRONG LAB,HRTD,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 3 BP 115 EP 118 PG 4 WC Psychology, Multidisciplinary SC Psychology GA VF277 UT WOS:A1996VF27700001 ER PT J AU Stone, BM Turner, KL Wiggins, VL Looper, LT AF Stone, BM Turner, KL Wiggins, VL Looper, LT TI Measuring airman job performance using occupational survey data SO MILITARY PSYCHOLOGY LA English DT Article AB This research effort produced a task-based measure of job performance using data from existing Air Force occupational surveys. Previous performance measures collected in the field during the Air Force Job Performance Measurement (JPM) program were time consuming and expensive because they involved hands-on observation and measurement. The alternative, low-cost, readily available measure developed in this study accounted for the number and difficulty of job tasks performed by an airman and was validated against data from the JPM program using airman aptitude and experience as predictor variables. Results showed that the occupational task-based performance measure rank ordered airmen similarly to the JPM measure in terms of average performance, suggesting its value as a more cost-effective measure of work productivity. C1 ARMSTRONG LAB,HRMJ,HUMAN RESOURCES DIRECTORATE,BROOKS AFB,TX 78235. METRICA INC,SAN ANTONIO,TX. RRC INC,BRYAN,TX. NR 12 TC 1 Z9 1 U1 1 U2 2 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 3 BP 143 EP 160 DI 10.1207/s15327876mp0803_2 PG 18 WC Psychology, Multidisciplinary SC Psychology GA VF277 UT WOS:A1996VF27700003 ER PT J AU Pokorny, RA Hall, EP Gallaway, MA Dibble, E AF Pokorny, RA Hall, EP Gallaway, MA Dibble, E TI Analyzing components of work samples to evaluate performance SO MILITARY PSYCHOLOGY LA English DT Article AB A method is described in which work sample data were analyzed to reveal how aircraft maintenance technicians differed in troubleshooting performance after a training intervention. During the training phase of the study, approximately half the technicians received troubleshooting instruction from an intelligent tutoring system, and the remaining technicians received informal on-the-job training. Data from work samples, in which technicians verbally isolated simulated equipment failures, were collected from both groups before and after the training. The work sample data were then examined by subject matter experts who scored performance for overall proficiency and noted specific violations of good troubleshooting practice. These violations provided the basis for the components of performance examined in the work sample data. The results of this componential analysis allow more specific conclusions to be drawn regarding the effectiveness of the training intervention by revealing how the tutoring system improved technicians' troubleshooting (e.g., tutored technicians were more likely than untutored technicians to test components thoroughly to ensure they were faulty before replacing them). C1 UNIV PITTSBURGH,CTR LEARNING RES & DEV,PITTSBURGH,PA 15260. RP Pokorny, RA (reprint author), ARMSTRONG LAB,HRMC,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 18 TC 3 Z9 3 U1 1 U2 2 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 3 BP 161 EP 177 DI 10.1207/s15327876mp0803_3 PG 17 WC Psychology, Multidisciplinary SC Psychology GA VF277 UT WOS:A1996VF27700004 PM 11540406 ER PT J AU Earles, JA Driskill, WE Dittmar, MJ AF Earles, JA Driskill, WE Dittmar, MJ TI Methodology for identifying abilities for job classification: An application of job analysis SO MILITARY PSYCHOLOGY LA English DT Article; Proceedings Paper CT 8th Annual Meeting of the Society-for-Industrial-and-Organizational-Psychology CY APR, 1993 CL SAN FRANCISCO, CA SP Soc Ind & Org Psychol ID PERSONNEL-SELECTION AB There has been a resurgence of interest in using cognitive and personality factors to improve prediction of job performance. Small gains in prediction efficiency can have enormous benefits for organizations that make many employee placements. It is prohibitively expensive to conduct empirical validity studies for every newly proposed factor for every job. A cost-effective alternative is the method of expert judgments in which subject matter experts (SMEs) rate the importance of various abilities for task components. This rational specification technique was applied to four Air Force enlisted and four officer occupations using the survey mail-out method to obtain SME ratings of the importance of various abilities for successful job performance. Tasks (e.g., calculate serial dilutions, evacuate refrigerant subsystems) were grouped by verbs to define activity modules. Reliable and reasonable ratings of the importance of abilities were obtained by the survey mail-out method. C1 METRICA INC,SAN ANTONIO,TX. RP Earles, JA (reprint author), ARMSTRONG LAB,HRMC,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 22 TC 5 Z9 6 U1 1 U2 4 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 3 BP 179 EP 193 DI 10.1207/s15327876mp0803_4 PG 15 WC Psychology, Multidisciplinary SC Psychology GA VF277 UT WOS:A1996VF27700005 ER PT J AU Cunningham, JW Powell, TE Wimpee, WE Wilson, MA Ballentine, RD AF Cunningham, JW Powell, TE Wimpee, WE Wilson, MA Ballentine, RD TI Ability-requirement factors for general job elements SO MILITARY PSYCHOLOGY LA English DT Article ID POSITION ANALYSIS QUESTIONNAIRE; DIMENSIONS; PAQ AB General nomothetic job descriptors (NJDs) are useful in describing, comparing, and grouping a broad spectrum of jobs. Moreover, NJDs are potentially linkable to measurable human attributes through the ''job component'' approach, under which attribute-requirement weights are derived for a universal set of job components (NJDs or NJD factors). Subsequently, attribute-requirement estimates can be derived for any job that has been rated or scored on the weighted components. This study explored factor structures underlying requirement ratings of the NJDs in three structured job analysis questionnaires on basic abilities as defined in three different attribute-requirement inventories. Six ability-requirement factors were similar across all three datasets: General Physical Ability, Equipment-Control Sensorimotor Ability, Manual Ability, Reasoning and Problem Solving, Numerical Ability, and Visual Perception. A seventh factor, verbal ability, was common to two datasets. The results suggest that little systematic rating variance would be lost by condensing the individual abilities to a more manageable number of factors. C1 MONTEREY TECHNOL INC,CARY,NC. ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,BROOKS AFB,TX 78235. N CAROLINA STATE UNIV,DEPT PSYCHOL,RALEIGH,NC 27695. UNIV N TEXAS,CTR STUDY WORK TEAMS,DENTON,TX 76203. RP Cunningham, JW (reprint author), N CAROLINA STATE UNIV,DEPT PSYCHOL,BOX 7801,RALEIGH,NC 27695, USA. NR 40 TC 2 Z9 2 U1 11 U2 11 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 3 BP 219 EP 234 DI 10.1207/s15327876mp0803_6 PG 16 WC Psychology, Multidisciplinary SC Psychology GA VF277 UT WOS:A1996VF27700007 ER PT J AU Quick, JC Joplin, JR Nelson, DL Mangelsdorff, AD Fiedler, E AF Quick, JC Joplin, JR Nelson, DL Mangelsdorff, AD Fiedler, E TI Self-reliance and military service training outcomes SO MILITARY PSYCHOLOGY LA English DT Article; Proceedings Paper CT International Stress Conference CY DEC, 1993 CL SAN ANTONIO, TX ID STRESS; HEALTH; WORK; WAR AB The purpose of these 2 studies was to examine the self-reliance of basic military trainees in the U.S. Air Force. Study 1 was a cross-sectional, comparative analysis of 3 groups of basic military trainees (N = 158). Study 2 was a predictive validity study of 13 groups of basic military trainees (N = 1,339). Both studies indicated that self-reliant trainees fared better in training than did their less self-reliant counterparts. They were healthier, had higher self-esteem, lower burnout, and higher completion rates. A post hoc analysis of self-reliance, self-esteem, and burnout is reported. Given that self-reliance appears important, we suggest developmental activities for enhancing self-reliance in military organizations. C1 SAN ANTONIO AIR LOGIST CTR,KELLY AFB,TX. SO ILLINOIS UNIV,DEPT MANAGEMENT,CARBONDALE,IL 62901. OKLAHOMA STATE UNIV,DEPT MANAGEMENT,STILLWATER,OK 74078. CTR HLTH CARE EDUC & STUDIES,FT SAM HOUSTON,TX. WILFORD HALL USAF MED CTR,DEPT PSYCHOL,LACKLAND AFB,TX. RP Quick, JC (reprint author), UNIV TEXAS,DEPT MANAGEMENT,BOX 19467,ARLINGTON,TX 76019, USA. NR 42 TC 18 Z9 19 U1 1 U2 2 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0899-5605 J9 MIL PSYCHOL JI Milit. Psychol. PY 1996 VL 8 IS 4 BP 279 EP 293 DI 10.1207/s15327876mp0804_2 PG 15 WC Psychology, Multidisciplinary SC Psychology GA VK122 UT WOS:A1996VK12200002 ER PT B AU Bright, VM Comtois, JH Sene, DE Reid, JR Gustafson, SC Watson, EA AF Bright, VM Comtois, JH Sene, DE Reid, JR Gustafson, SC Watson, EA BE Motamedi, ME TI Realizing micro-opto-electro-mechanical devices through a commercial surface-micromachining process SO MINIATURIZED SYSTEMS WITH MICRO-OPTICS AND MICROMECHANICS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Miniaturized Systems with Micro-Optics and Micromechanics CY JAN 30-31, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers, Adv Res Projects Agcy DE micromirror; grating; interferometer; micromachining C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 5 Z9 5 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2061-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2687 BP 34 EP 46 DI 10.1117/12.234634 PG 13 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Optics SC Engineering; Optics GA BF18M UT WOS:A1996BF18M00005 ER PT B AU Watson, EA Miller, AR AF Watson, EA Miller, AR BE Motamedi, ME TI Analysis of optical beam steering using phased micromirror arrays SO MINIATURIZED SYSTEMS WITH MICRO-OPTICS AND MICROMECHANICS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Miniaturized Systems with Micro-Optics and Micromechanics CY JAN 30-31, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers, Adv Res Projects Agcy DE optical beam steering; micromirror array; optical phased array C1 USAF,WRIGHT LAB,ELECTROOPT BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 3 Z9 3 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2061-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2687 BP 60 EP 67 DI 10.1117/12.234637 PG 8 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Optics SC Engineering; Optics GA BF18M UT WOS:A1996BF18M00008 ER PT J AU Bunning, TJ Socci, EP Farmer, BL Campbell, AL Adams, WW AF Bunning, TJ Socci, EP Farmer, BL Campbell, AL Adams, WW TI X-ray diffraction study of intermolecular interactions in cholesteryl ester-substituted cyclosiloxanes SO MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS LA English DT Article DE liquid crystal; cholesterol; interdigitation; X-ray diffraction; cyclic siloxane; molecular modeling ID LIQUID-CRYSTALLINE SILOXANES; GENERATION; POLYMERS; STORAGE AB The mesophase structure of a series of sixteen cholesterol-based liquid crystalline materials based on cyclosiloxane backbones is examined. The co-existence of two layer types (full and partial interdigitation of cholesterol mesogens) in the mesophase is examined as a function of ring size, composition, and spacer length. The relative X-ray intensities from each layer type are discussed as a function of these variables. An increase in the ring size and cholesterol composition, and a decrease in the spacer group all result in more partially interdigitated packing. Molecular modeling calculations performed on the mesogens and macromolecules examine relative differences in the orientational relationships and flexibility of mesogens. C1 UNIV VIRGINIA,DEPT MAT SCI & ENGN,CHARLOTTESVILLE,VA 22903. USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Bunning, TJ (reprint author), SCI APPLICAT INT CORP,101 WOODMAN DR,SUITE 103,DAYTON,OH 45431, USA. RI Adams, Wade/A-7305-2010 NR 19 TC 2 Z9 2 U1 0 U2 1 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 1058-725X J9 MOL CRYST LIQ CRYS A JI Mol. Cryst. Liq. Cryst. Sci. Technol. Sect. A-Mol. Cryst. Liq. Cryst. PY 1996 VL 275 BP 143 EP 154 DI 10.1080/10587259608034069 PG 12 WC Crystallography SC Crystallography GA UJ430 UT WOS:A1996UJ43000015 ER PT S AU Dainty, AM AF Dainty, AM BE Husebye, ES Dainty, AM TI The influence of seismic scattering on monitoring SO MONITORING A COMPREHENSIVE TEST BAN TREATY SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Study Institute on Monitoring a Comprehensive Test Ban Treaty CY JAN 23-FEB 01, 1995 CL ALVOR, PORTUGAL SP NATO C1 USAF,PHILLIPS LAB,DIV EARTH SCI,BEDFORD,MA 01731. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-3811-1 J9 NATO ADV SCI INST SE PY 1996 VL 303 BP 663 EP 688 PG 26 WC Geochemistry & Geophysics; Geosciences, Multidisciplinary SC Geochemistry & Geophysics; Geology GA BE86V UT WOS:A1996BE86V00036 ER PT J AU Amato, AA Gronseth, GS Callerame, KJ KaganHallet, KS Bryan, WW Barohn, RJ AF Amato, AA Gronseth, GS Callerame, KJ KaganHallet, KS Bryan, WW Barohn, RJ TI Tomaculous neuropathy: A clinical and electrophysiological study in patients with and without 1.5-Mb deletions in chromosome 17p11.2 SO MUSCLE & NERVE LA English DT Article DE tomaculous neuropathy; hereditary neuropathy with liability to pressure palsies; mutations; peripheral myelin protein 22 ID TOOTH DISEASE TYPE-1A; HEREDITARY NEUROPATHY; PRESSURE PALSIES; MONOCLONAL GAMMOPATHY; POINT MUTATION; GENE DOSAGE; PMP22 GENE; LIABILITY; MECHANISM; CMT1A AB Tomaculous neuropathy is the descriptive term for the ''sausagelike'' swellings of myelin characteristic of hereditary neuropathy with liability to pressure palsies (HNPP), A 1.5-Mb deletion in chromosome 17p11.2 is present in the majority but not all cases of HNPP, We reviewed the clinical and electrophysiological features of 18 patients with tomaculous neuropathy and compared these features between patients with and without the typical large deletion. Patients presented with a variety of pressure-induced nerve palsies and brachial plexopathies. Two patients presented with generalized symmetric sensorimotor polyneuropathies, Four patients were older than their respective probands but were as yet asymptomatic. Nerve conduction studies demonstrated prolonged distal latencies out of proportion to slowing of conduction velocities, suggesting a distally accentuated myelinopathy, DNA analysis revealed the 1.5-Mb deletion in all the familial cases and in 3 of the sporadic patients, The clinical and electrophysiological features were similar between patients with and without the 1.5-Mb deletion in chromosome 17p11.2. (C) 1996 John Wiley & Sons, Inc. C1 WILFORD HALL USAF MED CTR,DEPT NEUROL,LACKLAND AFB,TX 78236. UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,NEUROPATHOL SECT,SAN ANTONIO,TX 78284. UNIV TEXAS,SW MED CTR,DEPT NEUROL,DALLAS,TX 75235. NR 31 TC 46 Z9 48 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0148-639X J9 MUSCLE NERVE JI Muscle Nerve PD JAN PY 1996 VL 19 IS 1 BP 16 EP 22 DI 10.1002/(SICI)1097-4598(199601)19:1<16::AID-MUS3>3.0.CO;2-B PG 7 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA TM001 UT WOS:A1996TM00100004 PM 8538664 ER PT B AU Brown, E Crane, CD AF Brown, E Crane, CD BE Speigle, SA TI A system for performing site characterization for test ranges containing unexploded ordnance SO NAVIGATION AND CONTROL TECHNOLOGIES FOR UNMANNED SYSTEMS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Navigation and Control Technologies for Unmanned Systems CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers, Assoc Unmanned Vehicle Syst Int DE autonomous vehicles; unexploded ordnance; magnetometers; ground penetrating radar; sensor fusion C1 WRIGHT LAB,FIVC,TYNDALL AFB,FL 32403. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2119-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2738 BP 164 EP 175 PG 12 WC Optics SC Optics GA BF87R UT WOS:A1996BF87R00016 ER PT S AU Sene, DE Grantham, JW Bright, VM Comtois, JH AF Sene, DE Grantham, JW Bright, VM Comtois, JH GP IEEE TI Development and characterization of micro-mechanical gratings for optical modulation SO NINTH ANNUAL INTERNATIONAL WORKSHOP ON MICRO ELECTRO MECHANICAL SYSTEMS, IEEE PROCEEDINGS: AN INVESTIGATION OF MICRO STRUCTURES, SENSORS, ACTUATORS, MACHINES AND SYSTEMS SE PROCEEDINGS: IEEE MICRO ELECTRO MECHANICAL SYSTEMS WORKSHOP LA English DT Proceedings Paper CT IEEE 9th Annual International Workshop on Micro Electro Mechanical Systems - An Investigation of Micro Structures, Sensors, Actuators, Machines and Systems CY FEB 11-15, 1996 CL SAN DIEGO, CA SP IEEE Robotics & Automat Soc C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 15 Z9 15 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1084-6999 BN 0-7803-2985-6 J9 PROC IEEE MICR ELECT PY 1996 BP 222 EP 227 DI 10.1109/MEMSYS.1996.493984 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Engineering, Mechanical SC Automation & Control Systems; Engineering GA BF27K UT WOS:A1996BF27K00038 ER PT B AU Brown, SM Wilde, N Carlin, JD AF Brown, SM Wilde, N Carlin, JD BE Mead, NR TI A software maintenance process architecture SO NINTH CONFERENCE ON SOFTWARE ENGINEERING EDUCATION, PROCEEDINGS LA English DT Proceedings Paper CT 9th Conference on Software Engineering Education CY APR 21-24, 1996 CL DAYTONA BEACH, FL SP Software Engn Inst, IEEE, Comp Soc, IEEE, Comp Soc, Tech Council Software Engn, IEEE, Comp Soc, Tech Comm Software Engn Educ, Assoc Comp Machinery, IWCASE Int Workshop CASE C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45432. NR 0 TC 1 Z9 1 U1 0 U2 1 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7249-8 PY 1996 BP 130 EP 141 DI 10.1109/CSEE.1996.491368 PG 12 WC Computer Science, Software Engineering; Education, Scientific Disciplines SC Computer Science; Education & Educational Research GA BF52M UT WOS:A1996BF52M00013 ER PT B AU Smith, TK Guijt, C Fredell, R AF Smith, TK Guijt, C Fredell, R BE Rempt, RD Broz, AL TI Eddy current inspection of bonded composite crack repair SO NONDESTRUCTIVE EVALUATION OF AGING AIRCRAFT, AIRPORTS, AND AEROSPACE HARDWARE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware CY DEC 03-05, 1996 CL SCOTTSDALE, AZ SP Soc Photo Opt Instrumentat Engineers, Fed Highway Adm, Nondestruct Testing Informat Anal Ctr, Air Force Wright Lab, Pressure Vessel Res Council, Mat Properties Council Inc, US DOE, DARPA, NIST, Lawrence Livermore Natl Lab, Soc Exptl Mech, Amer Soc Mech Engineers, FAA, Amer Soc Testing & Mat, CalTrans, Elect Power Res Inst, Battelle Pacific NW Natl Lab DE GLARE(TM); Eddy Current Inspection; bonded repair; crack patching; fiber metal laminate AB The aging of the US aircraft. fleet poses serious economic and safety challenges. Fatigue cracks in the 7079-T6 aluminum fuselage skin of aging transports have presented an opportunity to test a prototype repair. GLARE(TM), a fiber metal laminate, has been applied to repair fuselage cracks in the fuselage skin of a US transport aircraft. This affordable prototype solution to extend the life of aging aircraft requires an inspection method to track crack growth and monitor the effectiveness of the patch on repaired fuselage skin. The fiber metal laminate patch is opaque and the fuselage skin at the damage location generally can only be accessed from the outside surface requiring the use of a non-destructive means to monitor crack length. Advances in eddy current inspection technology have provided a means to detect and track crack growth beneath patches on fuselage skins. This paper describes the development of low-frequency eddy current techniques to monitor cracks under bonded composite repair patches applied to stiffened fuselage structures. The development involved the use of a rugged: portable eddy current inspection unit. The results show crack growth can be monitored to ensure the continued structural integrity of repaired flawed structures; however, the influence of substructure (frames, etc.) present a challenge to the inspector in detecting crack growth. RP Smith, TK (reprint author), USAF ACAD,DEPT MECH ENGN,2354 FAIRCHILD DR,SUITE 6H2,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2349-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2945 BP 23 EP 31 PG 9 WC Engineering, Aerospace; Materials Science, Characterization & Testing; Optics SC Engineering; Materials Science; Optics GA BG82A UT WOS:A1996BG82A00003 ER PT B AU Hildreth, JH AF Hildreth, JH BE Rempt, RD Broz, AL TI Computer aided feature extraction, classification and acceptance processing of digital NDE data SO NONDESTRUCTIVE EVALUATION OF AGING AIRCRAFT, AIRPORTS, AND AEROSPACE HARDWARE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware CY DEC 03-05, 1996 CL SCOTTSDALE, AZ SP Soc Photo Opt Instrumentat Engineers, Fed Highway Adm, Nondestruct Testing Informat Anal Ctr, Air Force Wright Lab, Pressure Vessel Res Council, Mat Properties Council Inc, US DOE, DARPA, NIST, Lawrence Livermore Natl Lab, Soc Exptl Mech, Amer Soc Mech Engineers, FAA, Amer Soc Testing & Mat, CalTrans, Elect Power Res Inst, Battelle Pacific NW Natl Lab DE automated NDE processing; NDE; aging; solid rocket motors; computed tomography AB As part of the Advanced Launch System technology development effort begun in 1989, the Air Force initiated a program to automate, to the extent possible, the processing of NDE data from the inspection of solid rocket motors during fabrication. The computerized system, called the Automated NDE Data Evaluation System or ANDES, was developed under contract to Martin Marietta, now Lockheed Martin. The ANDES system is generic in structure and is highly tailorable. The system can be configured to process digital or digitized data from any source, to process data from a single or from multiple acquisition systems,and to function as a single stand-alone system or in a multiple workstation distributed network. The system can maintain multiple configurations from which the user can select. In large measure, a configuration is defined through the system's user interface and is stored in the system's data base to be recalled by the user at any time. Three operational systems are currently in use. These systems are located at Hill AFB in Ogden, UT, Kelly AFB in San Antonio, TX, and the Phillips Laboratory at Edwards AFB in California. Each of these systems is configured to process X-ray computed tomography, CT, images. The Hill AFB installation supports the aging surveillance effort on Minuteman third stage rocket motors. The Kelly AFB system supports the acceptance inspection of airframe and engine components and torpedo housing components. The installation at Edwards AFB provides technical support to the other two locations. This paper presents the development history, the system design issues, the system hardware and software architecture, and a brief description of the operational systems and their functions. RP Hildreth, JH (reprint author), USAF,PHILLIPS LAB,PROP DIRECTORATE,EDWARDS AFB,CA 93523, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2349-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2945 BP 62 EP 73 DI 10.1117/12.259078 PG 12 WC Engineering, Aerospace; Materials Science, Characterization & Testing; Optics SC Engineering; Materials Science; Optics GA BG82A UT WOS:A1996BG82A00008 ER PT B AU Hildreth, JH AF Hildreth, JH BE Rempt, RD Broz, AL TI Application of automated NDE data evaluation to missile and aircraft systems SO NONDESTRUCTIVE EVALUATION OF AGING AIRCRAFT, AIRPORTS, AND AEROSPACE HARDWARE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nondestructive Evaluation of Aging Aircraft, Airports, and Aerospace Hardware CY DEC 03-05, 1996 CL SCOTTSDALE, AZ SP Soc Photo Opt Instrumentat Engineers, Fed Highway Adm, Nondestruct Testing Informat Anal Ctr, Air Force Wright Lab, Pressure Vessel Res Council, Mat Properties Council Inc, US DOE, DARPA, NIST, Lawrence Livermore Natl Lab, Soc Exptl Mech, Amer Soc Mech Engineers, FAA, Amer Soc Testing & Mat, CalTrans, Elect Power Res Inst, Battelle Pacific NW Natl Lab DE automated NDE processing; NDE; aging; solid rocket motors; computed tomography AB As part of the Advanced Launch System technology development effort begun in 1989, the Air Force initiated a program to automate to the extent possible the processing of NDE data from the inspection of solid rocket motors during fabrication. The computerized system, called the Automated NDE Data Evaluation System or ANDES, was developed under contract to Martin Marietta. The generic ANDES system has been tailored to support inspection tasks at two Air Logistic Centers in the Air Force. These centers are the Ogden Air Logistic Center at Hill AFB, UT and the San Antonio Air Logistic Center at Kelly AFB, TX. The ANDES system can be configured to process digital or digitized NDE data from any source. The system will analyze the data for anomalies, classify detected anomalies, and make a recommendation on the service ability of the component containing the anomalies based on established criteria. The ANDES system at Hill AFB is configured to process X-ray computed tomography (CT) images in support of the surveillance activities on the Minuteman III third stage solid rocket motors. The system functions as a supplement to the visual image analysis effort and as an automated report generation and electronic report storage device. The ANDES system installed at Kelly AFB also processed CT images. The components supported are the oil scavenging assembly from the F-100 aircraft engine, the yoke pivot black casting for T-38 aircraft, and a torpedo housing casting Kelly AFB inspects for the NAVY. The ANDES system screens the casting data images for void content and cracks and a braised joint on the oil scavenge tube for leak paths and total wetted area. The paper will briefly discuss the ANDES development history, the system hardware and software architectures employed at both Kill AFB and Kelly AFB, and a brief description df the performance, of the operational systems. RP Hildreth, JH (reprint author), USAF,PHILLIPS LAB,PROP DIRECTORATE,EDWARDS AFB,CA 93523, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2349-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2945 BP 116 EP 127 DI 10.1117/12.259084 PG 12 WC Engineering, Aerospace; Materials Science, Characterization & Testing; Optics SC Engineering; Materials Science; Optics GA BG82A UT WOS:A1996BG82A00014 ER PT B AU Myers, LE Eckardt, RC Fejer, MM Byer, RL Bosenberg, WR AF Myers, LE Eckardt, RC Fejer, MM Byer, RL Bosenberg, WR BE Gupta, MC Kozlovsky, WJ MacPherson, DC TI Progress in quasi-phasematched optical parametric: Oscillators using periodically poled LiNbO3 SO NONLINEAR FREQUENCY GENERATION AND CONVERSION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonlinear Frequency Conversion - Materials, Devices, and Applications CY JAN 29-31, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE nonlinear optics; lithium niobate; infrared sources; tunable mid-IR generation; nonlinear optical materials; frequency conversion C1 USAF,WRIGHT LAB,AARI,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 12 Z9 12 U1 1 U2 6 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2074-3 J9 P SOC PHOTO-OPT INS PY 1996 VL 2700 BP 216 EP 226 DI 10.1117/12.239653 PG 11 WC Optics SC Optics GA BF87D UT WOS:A1996BF87D00026 ER PT B AU McLean, DG Fleitz, PA Sutherland, RL AF McLean, DG Fleitz, PA Sutherland, RL BE Lawson, CM TI New aspects on the interpretation of z-scan data SO NONLINEAR OPTICAL LIQUIDS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonlinear Optical Liquids CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE z-scan; Gaussian decomposition; nonlinear absorption; two photon absorption; symmetry decomposition; nonlinear refraction C1 USAF,WRIGHT LAB,MLPJ,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2241-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2853 BP 74 EP 83 DI 10.1117/12.253481 PG 10 WC Optics SC Optics GA BG61E UT WOS:A1996BG61E00008 ER PT B AU Guha, S AF Guha, S BE Lawson, CM TI A nonlinear optical beam propagation method for describing optical limiter performance SO NONLINEAR OPTICAL LIQUIDS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonlinear Optical Liquids CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers C1 USAF,WRIGHT LAB,MLPJ,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2241-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2853 BP 84 EP 92 DI 10.1117/12.253463 PG 9 WC Optics SC Optics GA BG61E UT WOS:A1996BG61E00009 ER PT B AU Tang, N Su, W Cooper, T Adams, W Brandelik, D Brant, M McLean, D Sutherland, R AF Tang, N Su, W Cooper, T Adams, W Brandelik, D Brant, M McLean, D Sutherland, R BE Lawson, CM TI Nonlinear absorption in modified porphyrins SO NONLINEAR OPTICAL LIQUIDS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nonlinear Optical Liquids CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE halogenated porphyrin; transient spectroscopy; nonlinear absorption; excited-state; triplet lifetime; optical limiting C1 USAF,WRIGHT LAB,MLPJ,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 5 Z9 5 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2241-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2853 BP 149 EP 157 DI 10.1117/12.253470 PG 9 WC Optics SC Optics GA BG61E UT WOS:A1996BG61E00016 ER PT S AU Karna, SP Yeates, AT AF Karna, SP Yeates, AT BE Karna, SP Yeates, AT TI Nonlinear optical materials: Theory and modeling SO NONLINEAR OPTICAL MATERIALS: THEORY AND MODELING SE ACS SYMPOSIUM SERIES LA English DT Article; Proceedings Paper CT Symposium on Nonlinear Optical Materials - Theory and Modeling, at the 208th National Meeting of the American-Chemical-Society CY AUG 21-25, 1994 CL WASHINGTON, DC SP Amer Chem Soc, Div Comp Chem ID SUBSTITUTED BENZENE MOLECULES; 2ND ORDER HYPERPOLARIZABILITY; CONJUGATED ORGANIC-MOLECULES; CHARGE-TRANSFER; 2ND-HARMONIC GENERATION; HARMONIC-GENERATION; CHAIN APPROXIMATION; PERTURBATION-THEORY; LENGTH DEPENDENCE; POLARIZABILITIES AB With a view to developing new materials for technological applications, the theory and mechanism of nonlinear optical phenomena in various dielectric media are reviewed. The role of theoretical modeling in advancing our understanding of the structure-property relationships of nonlinear optical materials is discussed. C1 USAF,WRIGHT LAB,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. RP Karna, SP (reprint author), USAF,PHILLIPS LAB,SPACE ELECT DIV,3550 ABERDENN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 88 TC 2 Z9 2 U1 1 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 SN 0097-6156 BN 0-8412-3401-9 J9 ACS SYM SER PY 1996 VL 628 BP 1 EP 22 PG 22 WC Chemistry, Multidisciplinary; Materials Science, Multidisciplinary; Optics SC Chemistry; Materials Science; Optics GA BF19D UT WOS:A1996BF19D00001 ER PT B AU Bruno, JG Collard, SB Kuch, DJ Cornette, JC AF Bruno, JG Collard, SB Kuch, DJ Cornette, JC GP MARINE TECHNOL SOC TI Preliminary survey of electrochemiluminescence from tunicate and other biological samples SO OCEANS '96 MTS/IEEE, CONFERENCE PROCEEDINGS, VOLS 1-3 / SUPPLEMENTARY PROCEEDINGS: COASTAL OCEAN - PROSPECTS FOR THE 21ST CENTURY LA English DT Proceedings Paper CT Conference on Prospects for the 21st-Century (OCEANS 96 MTS/IEEE) CY SEP 23-26, 1996 CL FT LAUDERDALE, FL SP Marine Technol Soc, OES, IEEE AB Electrochemiluminescence (ECL) is an electrochemical means of generating light from certain organic-metal complexes (e.g. Cr, Os, or Ru with bipyridine) and other types of molecules, Thus, it may be possible to develop an ECL-based metals sensor or biosensor consisting of organic molecules coated onto electrodes which emit light only upon complexation of particular metal ions and application of a small voltage, Toxic metals in water sources are of environmental concern, Some marine invertebrates, such as tunicates (ic, ''sea squirts'') and molluscs, are noted for their ability to concentrate toxic metals as much as 100 million-fold over ambient seawater concentrations, In the present work, extracts from a tunicate species, as well as synthetic tunicate blood pigments or ''tunichromes'', oysters, and other organisms were examined for intrinsic ECL in the presence and absence of various metal ions, Results suggest a promising novel, potentially sensitive, and specific means for metal ion detection based on ECL. RP Bruno, JG (reprint author), APPL RES ASSOC,ENVIRON DIRECTORATE,139 BARNES DR,SUITE 2,TYNDALL AFB,FL 32403, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3520-1 PY 1996 BP 493 EP 498 PG 6 WC Engineering, Marine; Engineering, Civil SC Engineering GA BG80E UT WOS:A1996BG80E00076 ER PT B AU Barrett, SF Wright, CHG Oberg, ED Rockwell, BA Cain, CP Jerath, MR Rylander, HG Welch, AJ AF Barrett, SF Wright, CHG Oberg, ED Rockwell, BA Cain, CP Jerath, MR Rylander, HG Welch, AJ BE Parel, JM Joos, KM Rol, PO Katzir, A TI Integrated computer-aided retinal photocoagulation system SO OPHTHALMIC TECHNOLOGIES VI, PROCEEDINGS OF SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 6th Ophthalmic Technologies Conference CY JAN 27-28, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE retina; photocoagulation; diabetic retinopathy; automated surgery; central reflectance C1 USAF ACAD,DEPT ELECT ENGN,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2047-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2673 BP 163 EP 173 DI 10.1117/12.240060 PG 11 WC Engineering, Biomedical; Ophthalmology; Optics SC Engineering; Ophthalmology; Optics GA BF76G UT WOS:A1996BF76G00023 ER PT B AU Calloway, DL AF Calloway, DL BE Casasent, DP Chao, TH TI Selecting a ternary phase-amplitude filter mask for target discrimination SO OPTICAL PATTERN RECOGNITION VII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Optical Pattern Recognition VII Conference CY APR 09-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE optical correlation; target recognition; pattern recognition; binary phase only filter; BPOF; ternary phase-amplitude filter; TPAF; image processing C1 USAF,WRIGHT LAB,ARMAMENT DIRECTORATE,WL MNGA,EGLIN AFB,FL 32542. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2133-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2752 BP 101 EP 110 DI 10.1117/12.235640 PG 10 WC Optics SC Optics GA BF31T UT WOS:A1996BF31T00012 ER PT B AU Grycewicz, TJ AF Grycewicz, TJ BE Casasent, DP Chao, TH TI A single lens joint transform correlator for high-resolution position location SO OPTICAL PATTERN RECOGNITION VII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Optical Pattern Recognition VII Conference CY APR 09-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE single lens joint transform correlator; optical correlation; chirp modulation; chirp-encoded joint power spectrum; frame subtraction C1 USAF,ROME LAB,BEDFORD,MA 01731. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2133-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2752 BP 333 EP 337 DI 10.1117/12.235669 PG 5 WC Optics SC Optics GA BF31T UT WOS:A1996BF31T00036 ER PT B AU Wood, BE Hall, DF Lesho, JC Dyer, JS Uy, OM Bertrand, WT AF Wood, BE Hall, DF Lesho, JC Dyer, JS Uy, OM Bertrand, WT BE Glassford, APM Breault, RP Pompea, SM TI Quartz crystal microbalance (QCM) flight measurements of contamination on the MSX satellite SO OPTICAL SYSTEM CONTAMINATION V AND STRAY LIGHT AND SYSTEM OPTIMIZATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical System Contamination V and Stray Light and System Optimization CY AUG 05-07, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE molecular contamination; spacecraft contamination; satellite contamination; MSX; QCM; TQCM; CQCM; SPIRIT III; cryogenic contamination AB The Midcourse Space Experiment (MSX) satellite was launched into a 903 Km, 99.4-deg orbit April 24, 1996. It carries imaging spectrometers and radiometers that operate in the UV, visible, and infrared spectral ranges. In addition, it carries several contamination measuring instruments that are being used to characterize the contamination environment on, in, and around the satellite. Five are quartz crystal microbalances (QCMs), four of which are temperature-controlled (TQCMs). They are located on various external surfaces of the spacecraft and are operating at -40 degrees to -50 degrees C to measure the condensation of silicone and organic molecules. One is a cryogenic quartz crystal microbalance (CQCM) which is located adjacent to the SPIRIT III infrared cryogenic telescope primary mirror. Its temperature followed the mirror which cooled from 28 to 20 K during the first week of operation. All QCMs recorded deposition in the 10-20 ng/cm(2)-day (1-2 Angstrom/day) range. Thermogravimetric analyses on the QCMs provided insight into the amount and species of contaminants condensed. Data from the QCMs and other instruments in the contamination experiment (CE) suite played an important role in determining when it was safe to open covers on some of the optical instruments. RP Wood, BE (reprint author), SVERDRUP TECHNOL INC,AEDC GRP,ARNOLD ENGN DEV CTR,ARNOLD AFB,TN, USA. NR 0 TC 8 Z9 8 U1 0 U2 3 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2252-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2864 BP 187 EP 194 DI 10.1117/12.258309 PG 8 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BG72M UT WOS:A1996BG72M00017 ER PT B AU Gordon, RW Hollkamp, JJ AF Gordon, RW Hollkamp, JJ BE Johnson, CD TI A comparison of damping treatments for gas turbine blades SO PASSIVE DAMPING AND ISOLATION - SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Smart Structures and Materials 1996 Conference - Passive Damping and Isolation CY FEB 26-27, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA, Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE viscoelastic material; vibration suppression; passive damping; internal damping; high cycle fatigue; gas turbine blades; hydrostatic pressure C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2095-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2720 BP 2 EP 12 DI 10.1117/12.239087 PG 11 WC Acoustics; Engineering, Aerospace; Engineering, Civil; Engineering, Mechanical; Optics SC Acoustics; Engineering; Optics GA BF84Q UT WOS:A1996BF84Q00001 ER PT B AU Veley, DE Rao, SS AF Veley, DE Rao, SS BE Johnson, CD TI A comparison of active, passive and hybrid damping treatments in structural design SO PASSIVE DAMPING AND ISOLATION - SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Smart Structures and Materials 1996 Conference - Passive Damping and Isolation CY FEB 26-27, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA, Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE smart structures; active constrained layer damping; piezoelectric; finite element; patch placement; constrained layer damping; active damping; passive damping; hybrid damping C1 USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,FIBAD,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2095-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2720 BP 184 EP 195 DI 10.1117/12.239086 PG 12 WC Acoustics; Engineering, Aerospace; Engineering, Civil; Engineering, Mechanical; Optics SC Acoustics; Engineering; Optics GA BF84Q UT WOS:A1996BF84Q00018 ER PT B AU Sciulli, D Inman, DJ AF Sciulli, D Inman, DJ BE Johnson, CD TI Comparison of single- and two-degree-of-freedom models for passive and active vibration isolation design SO PASSIVE DAMPING AND ISOLATION - SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Smart Structures and Materials 1996 Conference - Passive Damping and Isolation CY FEB 26-27, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA, Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE vibration isolation; active damping; passive damping; visualization C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 9 Z9 9 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2095-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2720 BP 293 EP 304 DI 10.1117/12.239096 PG 12 WC Acoustics; Engineering, Aerospace; Engineering, Civil; Engineering, Mechanical; Optics SC Acoustics; Engineering; Optics GA BF84Q UT WOS:A1996BF84Q00028 ER PT B AU Lee, CYC AF Lee, CYC BE Kajzar, F Agranovich, VM Lee, CYC TI Optimizing secondary properties and EO coefficients of EO polymers SO PHOTOACTIVE ORGANIC MATERIALS: SCIENCE AND APPLICATIONS SE NATO ADVANCED SCIENCE INSTITUTE SERIES, SUB-SERIES 3, HIGH TECHNOLOGY LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Photoactive Organic Materials - Science and Applications CY JUN 25-30, 1995 CL AVIGNON, FRANCE SP NATO, Sci Affairs Div, Commissariat Energie Atom, LETI, Conseil Reg Vaucluse, France Telecom, Jobin Yvon, Tres Basses Temperatures, USAF, European Off Aerosp Res & Dev RP Lee, CYC (reprint author), USAF,OFF SCI RES,WASHINGTON,DC 20332, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3973-8 J9 NATO ASI 3 HIGH TECH PY 1996 VL 9 BP 175 EP 182 PG 8 WC Optics; Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter; Spectroscopy SC Optics; Physics; Spectroscopy GA BH03A UT WOS:A1996BH03A00011 ER PT B AU Lee, CYC Dalton, L AF Lee, CYC Dalton, L BE Kajzar, F Agranovich, VM Lee, CYC TI Molecular engineering SO PHOTOACTIVE ORGANIC MATERIALS: SCIENCE AND APPLICATIONS SE NATO ADVANCED SCIENCE INSTITUTE SERIES, SUB-SERIES 3, HIGH TECHNOLOGY LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Photoactive Organic Materials - Science and Applications CY JUN 25-30, 1995 CL AVIGNON, FRANCE SP NATO, Sci Affairs Div, Commissariat Energie Atom, LETI, Conseil Reg Vaucluse, France Telecom, Jobin Yvon, Tres Basses Temperatures, USAF, European Off Aerosp Res & Dev RP Lee, CYC (reprint author), USAF,OFF SCI RES,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3973-8 J9 NATO ASI 3 HIGH TECH PY 1996 VL 9 BP 543 EP 546 PG 4 WC Optics; Physics, Applied; Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter; Spectroscopy SC Optics; Physics; Spectroscopy GA BH03A UT WOS:A1996BH03A00038 ER PT B AU Hotaling, SP AF Hotaling, SP BE Pirich, AR TI Photon-spin interactions in condensed matter photonic systems: A potential foundation for photonic quantum computing SO PHOTONIC COMPONENT ENGINEERING AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Component Engineering and Applications CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 USAF,ROME LAB,ROME,NY 13441. NR 0 TC 0 Z9 0 U1 2 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2130-8 J9 P SOC PHOTO-OPT INS PY 1996 VL 2749 BP 34 EP 46 DI 10.1117/12.243112 PG 13 WC Optics SC Optics GA BF87S UT WOS:A1996BF87S00005 ER PT B AU Battiato, JM Stone, TW Murdocca, M Bussjager, RJ AF Battiato, JM Stone, TW Murdocca, M Bussjager, RJ BE Pirich, AR TI Free space optical system based on vertical cavity surface emitting lasers and self-electro-optic effect devices SO PHOTONIC COMPONENT ENGINEERING AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Component Engineering and Applications CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE microlaser; VCSEL; optical interconnection; S-SEED; optical computing; optical array generation C1 USAF,PHOTON CTR,OCPA,GRIFFISS AFB,NY 13441. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2130-8 J9 P SOC PHOTO-OPT INS PY 1996 VL 2749 BP 80 EP 89 DI 10.1117/12.243091 PG 10 WC Optics SC Optics GA BF87S UT WOS:A1996BF87S00011 ER PT B AU Bussjager, R Osman, J Song, QW Wang, XM AF Bussjager, R Osman, J Song, QW Wang, XM BE Pirich, AR TI Design of PLZT electro-optic beam steering device SO PHOTONIC COMPONENT ENGINEERING AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Component Engineering and Applications CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE PLZT ceramic; electro-optic wedge; optical scanning; micro-optics C1 USAF,PHOTON LAB,ROME LAB,ROME,NY 13441. NR 0 TC 0 Z9 1 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2130-8 J9 P SOC PHOTO-OPT INS PY 1996 VL 2749 BP 90 EP 100 DI 10.1117/12.243092 PG 11 WC Optics SC Optics GA BF87S UT WOS:A1996BF87S00012 ER PT B AU Clark, N Prasad, N Banish, M Datz, F Christian, P AF Clark, N Prasad, N Banish, M Datz, F Christian, P BE Pirich, AR TI Optical information processing system for aiding the diagnosis of pulmonary embolism SO PHOTONIC COMPONENT ENGINEERING AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonic Component Engineering and Applications CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 USAF,PHILLIPS LAB,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2130-8 J9 P SOC PHOTO-OPT INS PY 1996 VL 2749 BP 207 EP 215 DI 10.1117/12.243105 PG 9 WC Optics SC Optics GA BF87S UT WOS:A1996BF87S00025 ER PT B AU Taylor, EW Winter, JE Sanchez, AD McKinney, SJ AF Taylor, EW Winter, JE Sanchez, AD McKinney, SJ BE Taylor, EW TI Radiation induced polarization changes in photonic devices SO PHOTONICS FOR SPACE ENVIRONMENTS IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 4th Conference on Photonics for Space Environments CY AUG 06-07, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, NARSIA, ASPRS DE electron; proton; acousto optics; Bragg cell; degree of polarization; depolarization; tellurium dioxide; gallium phosphide; space effects; transient radiation effects; optical processing; spatial light modulators C1 USAF,PHILLIPS LAB,SPACE & MISSILES TECHNOL DIRECTORATE,MICROELECT & PHOTON RES BRANCH,VIET,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2199-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2811 BP 12 EP 24 DI 10.1117/12.254043 PG 13 WC Engineering, Aerospace; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Instruments & Instrumentation; Remote Sensing; Optics GA BG61G UT WOS:A1996BG61G00002 ER PT B AU Paxton, AH Taylor, EW AF Paxton, AH Taylor, EW BE Taylor, EW TI Model for laser heating of acousto-optic devices SO PHOTONICS FOR SPACE ENVIRONMENTS IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 4th Conference on Photonics for Space Environments CY AUG 06-07, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, NARSIA, ASPRS DE acousto-optic; acousto-optic device; Bragg; Bragg cell; heating; thermal C1 USAF,PHILLIPS LAB,VTET,KIRTLAND AFB,NM 87117. NR 0 TC 2 Z9 2 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2199-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2811 BP 38 EP 45 DI 10.1117/12.254053 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Instruments & Instrumentation; Remote Sensing; Optics GA BG61G UT WOS:A1996BG61G00005 ER PT B AU Karna, SP Ferreira, AM Pugh, RD Brothers, CP Singaraju, BBK AF Karna, SP Ferreira, AM Pugh, RD Brothers, CP Singaraju, BBK BE Taylor, EW TI Quantum mechanical characterization of the microscopic structure and nonlinear optical properties of radiation-induced defects in a-SiO2 SO PHOTONICS FOR SPACE ENVIRONMENTS IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 4th Conference on Photonics for Space Environments CY AUG 06-07, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, NARSIA, ASPRS C1 USAF,PHILLIPS LAB,SPACE ELECT DIV,KIRTLAND AFB,NM 87117. RI Ferreira, Antonio/I-4423-2013 NR 0 TC 2 Z9 2 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2199-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2811 BP 61 EP 65 DI 10.1117/12.254056 PG 5 WC Engineering, Aerospace; Instruments & Instrumentation; Remote Sensing; Optics SC Engineering; Instruments & Instrumentation; Remote Sensing; Optics GA BG61G UT WOS:A1996BG61G00008 ER PT J AU Hendricks, KJ Coleman, PD Lemke, RW Arman, MJ Bowers, L AF Hendricks, KJ Coleman, PD Lemke, RW Arman, MJ Bowers, L TI Extraction of 1 GW of rf power from an injection locked relativistic klystron oscillator SO PHYSICAL REVIEW LETTERS LA English DT Article ID ELECTRON-BEAMS; AMPLIFIER AB Initial results of extracted power from a moderately modulated intense relativistic electron beam are reported. The modulation circuit is operated as a relativistic klystron oscillator frequency locked to an external oscillator. A 40% modulated electron beam has yielded more than 1 GW of rms power to a vacuum load and also radiated through an antenna. The ratio of the rf power to the intense electron beam power is approximately 20%. C1 SANDIA NATL LABS,DIV 9323,ALBUQUERQUE,NM 87185. SANDIA NATL LABS,DIV 1241,ALBUQUERQUE,NM 87185. RP Hendricks, KJ (reprint author), USAF,PHILLIPS LAB,DIV ELECTROMAGNET SOURCES,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 16 TC 29 Z9 30 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD JAN 1 PY 1996 VL 76 IS 1 BP 154 EP 157 DI 10.1103/PhysRevLett.76.154 PG 4 WC Physics, Multidisciplinary SC Physics GA TN037 UT WOS:A1996TN03700039 ER PT J AU Ross, M AF Ross, M TI Strengthening the hip abductors SO PHYSICIAN AND SPORTSMEDICINE LA English DT Article C1 AMER PHYS THERAPY ASSOC,ORTHOPAED & SPORTS SECT,WASHINGTON,DC. RP Ross, M (reprint author), USAF,MED GRP 39,INCIRLIK AIR BASE,TURKEY. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MCGRAW HILL HEALTHCARE PUBLICATIONS PI MINNEAPOLIS PA 4530 WEST 77TH ST, MINNEAPOLIS, MN 55435-5000 SN 0091-3847 J9 PHYSICIAN SPORTSMED JI Physician Sportsmed. PD JAN PY 1996 VL 24 IS 1 BP 100 EP 100 PG 1 WC Primary Health Care; Orthopedics; Sport Sciences SC General & Internal Medicine; Orthopedics; Sport Sciences GA TN919 UT WOS:A1996TN91900019 ER PT B AU Bossert, DJ Paxton, AH AF Bossert, DJ Paxton, AH BE Chow, WW Osinski, M TI Formation of filaments in tapered amplifiers SO PHYSICS AND SIMULATION OF OPTOELECTRONIC DEVICES IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Physics and Simulation of Optoelectronic Devices IV CY JAN 29-FEB 02, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers, Adv Res Projects Agcy C1 USAF,PHILLIPS LAB,LIDA,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2067-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2693 BP 720 EP 728 DI 10.1117/12.239327 PG 9 WC Optics; Physics, Applied; Physics, Condensed Matter SC Optics; Physics GA BF76H UT WOS:A1996BF76H00069 ER PT J AU Chutjian, A Garscadden, A Wadehra, JM AF Chutjian, A Garscadden, A Wadehra, JM TI Electron attachment to molecules at low electron energies SO PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS LA English DT Review ID NEGATIVE-ION FORMATION; DIFFERENTIAL CROSS-SECTION; HIGH RYDBERG STATES; DISSOCIATIVE RECOMBINATION COEFFICIENTS; DISCHARGE IONIZATION SOURCE; S-WAVE THRESHOLD; RATE CONSTANTS; MASS-SPECTROMETRY; VIBRATIONAL-EXCITATION; TEMPERATURE-DEPENDENCE AB Theoretical and experimental methods for studying electron attachment to molecules in the range 10's of eV to several mu eV are reviewed. Theoretial methods include use of the Projection-Operators Technique, the Fadeev Equations, and the R-matrix Method. Experimental approaches include multiple-collision techniques (swarm, Cavalleri, flowing-afterglow, pulsed radiolysis), and single-collision methods (Rydberg attachment, rare-gas photoionization, reversal electron attachment, crossed-beams). Recent experimental results using the various methods are given. Applications and needs of electron-attachment data are discussed for a broad range of fields, including gaseous dielectrics, electronegative discharges, laser plasmas, negative-ion sources, combustion, analyte detection, solar opacity, and the Earth's upper atmosphere. C1 USAF, WRIGHT LAB, WRIGHT PATTERSON AFB, OH 45433 USA. WAYNE STATE UNIV, DEPT PHYS, DETROIT, MI 48202 USA. RP CALTECH, JET PROP LAB, PASADENA, CA 91109 USA. NR 345 TC 104 Z9 104 U1 4 U2 26 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-1573 EI 1873-6270 J9 PHYS REP JI Phys. Rep.-Rev. Sec. Phys. Lett. PD JAN PY 1996 VL 264 IS 6 BP 393 EP 470 DI 10.1016/0370-1573(95)00022-4 PG 78 WC Physics, Multidisciplinary SC Physics GA TP023 UT WOS:A1996TP02300001 ER PT S AU Woytek, AH AF Woytek, AH BE Chalupnik, JD Marshall, SE Klein, RC TI USAF uses jet aircraft hush houses worldwide SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Woytek, AH (reprint author), 485 QUENTIN ROOSEVELT RD,SUITE 7,KELLY AFB,TX 78241, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 577 EP 580 PG 4 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00101 ER PT S AU Lee, RA AF Lee, RA BE Chalupnik, JD Marshall, SE Klein, RC TI NOISECHECK SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Lee, RA (reprint author), OEBN,AL,2610 7TH ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 857 EP 860 PG 4 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00151 ER PT S AU Downing, JM AF Downing, JM BE Chalupnik, JD Marshall, SE Klein, RC TI The international bibliography on noise citation database program SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Downing, JM (reprint author), AL,OEBN,2610 7TH ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 971 EP 974 PG 4 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00171 ER PT B AU Graham, RP Bailor, PD AF Graham, RP Bailor, PD GP IEEE COMP SOC TI Synthesis of local search algorithms by algebraic means SO PROCEEDINGS OF THE 11TH KNOWLEDGE-BASED SOFTWARE ENGINEERING CONFERENCE LA English DT Proceedings Paper CT 11th Knowledge-Based Software Engineering Conference (KBSE 96) CY SEP 25-28, 1996 CL SYRACUSE, NY SP USAF, Rome Lab, AAAI, ACM SIGART, ACM SIGSOFT, IEEE Comp Soc C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7680-9 PY 1996 BP 21 EP 30 DI 10.1109/KBSE.1996.552820 PG 10 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BG50A UT WOS:A1996BG50A00003 ER PT B AU Smith, SD AF Smith, SD BE Bajpai, PK TI Resonance behavior of females and males exposed to whole-body vibration SO PROCEEDINGS OF THE 1996 FIFTEENTH SOUTHERN BIOMEDICAL ENGINEERING CONFERENCE LA English DT Meeting Abstract CT 15th Southern Biomedical Engineering Conference CY MAR 29-31, 1996 CL DAYTON, OH SP Univ Dayton, Dayton, Wright State Univ, Dayton, Wright Patterson Air Force Base, Armstrong Lab, Dayton, IEEE, Engn Med & Biol Soc, Soc Biomat C1 USAF,ARMSTRONG LAB,DAYTON,OH 45433. NR 0 TC 1 Z9 1 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3131-1 PY 1996 BP 247 EP 250 DI 10.1109/SBEC.1996.493161 PG 4 WC Engineering, Aerospace; Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Ergonomics; Instruments & Instrumentation; Materials Science, Biomaterials; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation SC Engineering; Computer Science; Instruments & Instrumentation; Materials Science; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation GA BF41T UT WOS:A1996BF41T00064 ER PT B AU Patra, AL Kaleps, I Perry, CE AF Patra, AL Kaleps, I Perry, CE BE Bajpai, PK TI Analysis of an injury of the head/neck complex due to +Gz impact acceleration SO PROCEEDINGS OF THE 1996 FIFTEENTH SOUTHERN BIOMEDICAL ENGINEERING CONFERENCE LA English DT Meeting Abstract CT 15th Southern Biomedical Engineering Conference CY MAR 29-31, 1996 CL DAYTON, OH SP Univ Dayton, Dayton, Wright State Univ, Dayton, Wright Patterson Air Force Base, Armstrong Lab, Dayton, IEEE, Engn Med & Biol Soc, Soc Biomat C1 USAF,ARMSTRONG LAB,WRIGHT PATTERSON AFB,OH 45433. RI Patra, Abani/F-8262-2016 NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3131-1 PY 1996 BP 257 EP 260 DI 10.1109/SBEC.1996.493164 PG 4 WC Engineering, Aerospace; Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Ergonomics; Instruments & Instrumentation; Materials Science, Biomaterials; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation SC Engineering; Computer Science; Instruments & Instrumentation; Materials Science; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation GA BF41T UT WOS:A1996BF41T00067 ER PT B AU Chelette, TL Repperger, DW Phillips, CA AF Chelette, TL Repperger, DW Phillips, CA BE Bajpai, PK TI Pattern recognition of spastic motion SO PROCEEDINGS OF THE 1996 FIFTEENTH SOUTHERN BIOMEDICAL ENGINEERING CONFERENCE LA English DT Meeting Abstract CT 15th Southern Biomedical Engineering Conference CY MAR 29-31, 1996 CL DAYTON, OH SP Univ Dayton, Dayton, Wright State Univ, Dayton, Wright Patterson Air Force Base, Armstrong Lab, Dayton, IEEE, Engn Med & Biol Soc, Soc Biomat C1 USAF,ARMSTRONG LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3131-1 PY 1996 BP 423 EP 426 DI 10.1109/SBEC.1996.493265 PG 4 WC Engineering, Aerospace; Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Ergonomics; Instruments & Instrumentation; Materials Science, Biomaterials; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation SC Engineering; Computer Science; Instruments & Instrumentation; Materials Science; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation GA BF41T UT WOS:A1996BF41T00109 ER PT B AU Hasser, CJ Daniels, MW AF Hasser, CJ Daniels, MW BE Bajpai, PK TI Tactile feedback with adaptive controller for a force-reflecting haptic display .1. Design SO PROCEEDINGS OF THE 1996 FIFTEENTH SOUTHERN BIOMEDICAL ENGINEERING CONFERENCE LA English DT Meeting Abstract CT 15th Southern Biomedical Engineering Conference CY MAR 29-31, 1996 CL DAYTON, OH SP Univ Dayton, Dayton, Wright State Univ, Dayton, Wright Patterson Air Force Base, Armstrong Lab, Dayton, IEEE, Engn Med & Biol Soc, Soc Biomat C1 USAF,ARMSTRONG LAB,HUMAN SYST CTR,MAT COMMAND,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 6 Z9 7 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3131-1 PY 1996 BP 526 EP 529 DI 10.1109/SBEC.1996.493294 PG 2 WC Engineering, Aerospace; Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Ergonomics; Instruments & Instrumentation; Materials Science, Biomaterials; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation SC Engineering; Computer Science; Instruments & Instrumentation; Materials Science; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation GA BF41T UT WOS:A1996BF41T00138 ER PT B AU Hasser, CJ Daniels, MW AF Hasser, CJ Daniels, MW BE Bajpai, PK TI Tactile feedback with adaptive controller for a force-reflecting haptic display .2. Improvements and evaluation SO PROCEEDINGS OF THE 1996 FIFTEENTH SOUTHERN BIOMEDICAL ENGINEERING CONFERENCE LA English DT Meeting Abstract CT 15th Southern Biomedical Engineering Conference CY MAR 29-31, 1996 CL DAYTON, OH SP Univ Dayton, Dayton, Wright State Univ, Dayton, Wright Patterson Air Force Base, Armstrong Lab, Dayton, IEEE, Engn Med & Biol Soc, Soc Biomat C1 USAF,ARMSTRONG LAB,HUMAN SYST CTR,MAT COMMAND,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3131-1 PY 1996 BP 530 EP 533 DI 10.1109/SBEC.1996.493295 PG 2 WC Engineering, Aerospace; Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Ergonomics; Instruments & Instrumentation; Materials Science, Biomaterials; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation SC Engineering; Computer Science; Instruments & Instrumentation; Materials Science; Radiology, Nuclear Medicine & Medical Imaging; Rehabilitation GA BF41T UT WOS:A1996BF41T00139 ER PT B AU Ngo, AD Reigelsperger, WC Banda, SS Bessolo, JA AF Ngo, AD Reigelsperger, WC Banda, SS Bessolo, JA GP IEEE TI Tailless aircraft control law design using dynamic inversion & mu-synthesis SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS LA English DT Proceedings Paper CT 1996 IEEE International Conference on Control Applications CY SEP 15-18, 1996 CL DEARBORN, MI SP IEEE, Control Syst Soc C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 1 Z9 3 U1 1 U2 2 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2975-9 PY 1996 BP 107 EP 112 DI 10.1109/CCA.1996.558615 PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BG45H UT WOS:A1996BG45H00019 ER PT B AU Mracek, CP Cloutier, JR AF Mracek, CP Cloutier, JR GP IEEE TI A preliminary control design for the nonlinear benchmark problem. SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS LA English DT Proceedings Paper CT 1996 IEEE International Conference on Control Applications CY SEP 15-18, 1996 CL DEARBORN, MI SP IEEE, Control Syst Soc C1 USAF,ARMAMENT DIRECTORATE,NAVIGAT & CONTROL BRANCH,EGLIN AFB,FL 32542. NR 0 TC 6 Z9 6 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2975-9 PY 1996 BP 265 EP 272 DI 10.1109/CCA.1996.558705 PG 8 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BG45H UT WOS:A1996BG45H00045 ER PT B AU Mracek, CP Cloutier, JR DSouza, CA AF Mracek, CP Cloutier, JR DSouza, CA GP IEEE TI A new technique for nonlinear estimation SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS LA English DT Proceedings Paper CT 1996 IEEE International Conference on Control Applications CY SEP 15-18, 1996 CL DEARBORN, MI SP IEEE, Control Syst Soc C1 USAF,ARMAMENT DIRECTORATE,NAV & CONTROL BRANCH,EGLIN AFB,FL 32542. NR 0 TC 27 Z9 27 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2975-9 PY 1996 BP 338 EP 343 DI 10.1109/CCA.1996.558760 PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BG45H UT WOS:A1996BG45H00057 ER PT B AU Layne, TR Franke, ME Ridgely, DB AF Layne, TR Franke, ME Ridgely, DB GP IEEE TI Vehicle thermal control with a variable area inlet SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS LA English DT Proceedings Paper CT 1996 IEEE International Conference on Control Applications CY SEP 15-18, 1996 CL DEARBORN, MI SP IEEE, Control Syst Soc C1 USAF,INST TECHNOL,DEPT AERONAUT & ASTRONAUT,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2975-9 PY 1996 BP 775 EP 780 DI 10.1109/CCA.1996.558964 PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BG45H UT WOS:A1996BG45H00131 ER PT B AU Reid, JR Bright, VM Stewart, JT Kosinski, JA AF Reid, JR Bright, VM Stewart, JT Kosinski, JA GP IEEE TI Reducing the normal acceleration sensitivity of surface transverse wave resonators using micromachined isolation systems SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (50TH ANNIVERSARY) LA English DT Proceedings Paper CT 1996 IEEE International Frequency Control Symposium CY JUN 05-07, 1996 CL HONOLULU, HI SP IEEE, Ultrason Ferroelect & Frequency Control Soc AB Micromachined silicon platforms provide two methods for reducing the acceleration sensitivity of surface transverse wave resonators. First, micromachining allows precise control over the structure of the silicon mounting platform and supports. The platform can thus be shaped to apply stresses to the resonator such that the minimum acceleration sensitivity is achieved. Second, a platform supported by flexible arms acts as a vibration isolation system, thus reducing the effective acceleration applied to the resonator. A study of a silicon micromachined isolation platform has been performed. Numerical analysis has been used to determine the effect of stress on the resonator, while a mass spring model has been used to predict the effective acceleration applied to the resonator. RP Reid, JR (reprint author), USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 3 Z9 3 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3309-8 PY 1996 BP 464 EP 472 DI 10.1109/FREQ.1996.559896 PG 9 WC Engineering, Electrical & Electronic SC Engineering GA BG69B UT WOS:A1996BG69B00069 ER PT B AU Yen, GG AF Yen, GG GP IEEE TI Health monitoring of vibration signatures in rotorcraft wings SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL SYMPOSIUM ON INTELLIGENT CONTROL LA English DT Proceedings Paper CT 1996 IEEE International Symposium on Intelligent Control CY SEP 15-18, 1996 CL DEARBORN, MI SP IEEE, Control Syst Soc C1 USAF,PHILLIPS LAB,STRUCT & CONTROLS DIV,KIRTLAND AFB,NM 87117. NR 0 TC 1 Z9 1 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2978-3 PY 1996 BP 121 EP 126 DI 10.1109/ISIC.1996.556188 PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BG44Z UT WOS:A1996BG44Z00021 ER PT B AU Melvin, WL Wicks, MC Brown, RD AF Melvin, WL Wicks, MC Brown, RD GP IEEE TI Assessment of multichannel airborne radar measurements for analysis and design of space-time processing architectures and algorithms SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 USAF,ROME LAB,ROME,NY 13441. NR 0 TC 41 Z9 45 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 130 EP 135 DI 10.1109/NRC.1996.510669 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00023 ER PT B AU Currie, NC Alexander, NT Tuley, MT AF Currie, NC Alexander, NT Tuley, MT GP IEEE TI Unique calibration issues for bistatic radar reflectivity measurements SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 USAF,ROME LAB,SURVEILLANCE & PHOTON DIRECTORATE,ROME,NY 13441. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 142 EP 147 DI 10.1109/NRC.1996.510671 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00025 ER PT B AU Cornell, CO AF Cornell, CO GP IEEE TI Communications technology SO PROCEEDINGS OF THE 1996 TACTICAL COMMUNICATIONS CONFERENCE: ENSURING JOINT FORCE SUPERIORITY IN THE INFORMATION AGE LA English DT Proceedings Paper CT 1996 Tactical Communications Conference - Ensuring Joint Force Superiority in the Information Age (TCC-96) CY APR 30-MAY 02, 1996 CL FT WAYNE, IN SP Def Adv Res Projects Agcy, AFCEA, Indiana Chapter, IEEE, Ft Wayne Sect RP Cornell, CO (reprint author), USAF,ROME LAB,COMMAND CONTROL & COMMUN DIRECTORATE,BEDFORD,MA 01731, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3658-5 PY 1996 BP 89 EP 118 PG 30 WC Engineering, Aerospace; Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Computer Science; Telecommunications GA BG78E UT WOS:A1996BG78E00004 ER PT B AU Madden, CB Mills, RF AF Madden, CB Mills, RF GP IEEE TI Effects of a transform domain filter upon error rates and detectability of a spread spectrum signal SO PROCEEDINGS OF THE 1996 TACTICAL COMMUNICATIONS CONFERENCE: ENSURING JOINT FORCE SUPERIORITY IN THE INFORMATION AGE LA English DT Proceedings Paper CT 1996 Tactical Communications Conference - Ensuring Joint Force Superiority in the Information Age (TCC-96) CY APR 30-MAY 02, 1996 CL FT WAYNE, IN SP Def Adv Res Projects Agcy, AFCEA, Indiana Chapter, IEEE, Ft Wayne Sect AB Interference and jamming can severely disrupt the performance of an intended communication receiver, as well as any intercept receivers. This paper examines the effects of a transform domain digital excision filter upon the performance levels of both types of receivers as determined through simulations using the Signal Processing Worksystem. The communication system considered in this research employed direct sequence spread spectrum modulation. Intercept receivers considered were the radiometer and chip rate detector. The performance of the communication and intercept receivers in the presence of narrowband jammers was measured with and without the excision filter in order to characterize the performance gains achieved with the filter. These gains are presented in the form of bit error probability and receiver operating characteristic curves. RP Madden, CB (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3658-5 PY 1996 BP 503 EP 509 DI 10.1109/TCC.1996.561122 PG 7 WC Engineering, Aerospace; Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Engineering; Computer Science; Telecommunications GA BG78E UT WOS:A1996BG78E00040 ER PT B AU Sparks, AG AF Sparks, AG GP IEEE IEEE TI A gain-scheduled H-infinity control law for a tailless aircraft SO PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS, VOLS 1 AND 2 LA English DT Proceedings Paper CT IEEE International Conference on Control Applications CY SEP 01-04, 1998 CL TRIESTE, ITALY SP IEEE, CSS, Regione Friuli Venezia Giulia, Univ Trieste, Danieli Automat AB Linear parameter varying (LPV) control theory is used to design a gain-scheduled H-infinity flight control law for a tailless fighter aircraft. To compensate for the reduced directional stability, the aircraft under consideration has a large number of multi-axis control effecters. A previous gain-scheduled control law design for this tailless aircraft used simple LPV models that allow for straightforward computation of the controller gains but may sacrifice performance,of the resulting control law. This paper describes a new design that incorporates a higher fidelity LPV model in the design process. C1 AFRL, VACC, Wright Patterson AFB, OH 45433 USA. RP Sparks, AG (reprint author), AFRL, VACC, 2210 8th St, Wright Patterson AFB, OH 45433 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 0-7803-4104-X PY 1996 BP 674 EP 678 PG 5 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BM14X UT WOS:000077804400135 ER PT S AU Miller, RB Pachter, M AF Miller, RB Pachter, M GP IEEE TI Manual tracking control with amplitude and rate constrained actuators SO PROCEEDINGS OF THE 35TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 SE IEEE CONFERENCE ON DECISION AND CONTROL - PROCEEDINGS LA English DT Proceedings Paper CT 35th IEEE Conference on Decision and Control CY DEC 11-13, 1996 CL KOBE, JAPAN SP IEEE Control Syst Soc, Soc Instrument & Control Engineers, Inst Syst Control & Informat Engineers, Soc Ind & Appl Math, Operat Res Soc Amer AB Tracking control in a receding horizon framework is considered and a novel, optimization-based, linear tracking control strategy - Linear Quadratic Tracking (LQT) is de devised. LQT yields a closed-form solution to optimization-based tracking of a dynamic reference signal r(t), in the face of both rate and amplitude actuator constraints; Actuator dynamics are included Also, there is no inherent require ment for stability of the open-loop plant. At the same time, full state feedback is assumed. The detrimental effects of the actuator constraints are mitigated by giving the control system a nonlinearly modified, feasible reference signal r'(t), as required to prevent downstream actuator saturations from occurring. Thus, the controller generated signal never infringes on the saturation bounds, and windup is precluded. The analytic solution to the linear, unconstrained, tracking problem meets the small signal performance specs and is stable. The proposed piecewise linear closed form solution to the constrained tracking problem yields good responses to large inputs and at the same time requires modest on-line computation, and hence is implementable in real-time. RP Miller, RB (reprint author), USAF,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0191-2216 BN 0-7803-3591-0 J9 IEEE DECIS CONTR P PY 1996 BP 3159 EP 3164 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation SC Automation & Control Systems; Engineering; Instruments & Instrumentation GA BH27F UT WOS:A1996BH27F00684 ER PT J AU Groves, KM Basu, S Bishop, GJ Weber, EJ Quinn, JM AF Groves, KM Basu, S Bishop, GJ Weber, EJ Quinn, JM GP INST NAVIGAT TI Ionospheric effects on GPS navigation SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB Ionospheric effects on radio wave propagation, including amplitude and phase scintillation and group delay, have been recognized and studied for many years. The magnitude of these effects is known to vary dramatically as a function of solar output and magnetic activity. Because the use of GPS for navigation purposes was not widespread during the last maximum in the solar activity cycle, particularly in high-latitude and equatorial regions where the effects of ionospheric disturbances are most severe, the maximum impact of the ionosphere on current GPS applications remains unknown. UHF and L-band scintillation measurements have been acquired routinely over the last solar cycle to characterize the global scintillation environment under varying geophysical conditions. Over an appreciable fraction of the earth's surface, approximately +/- 200 magnetic latitude, L-band fades in excess of 20 dB are not uncommon during the solar maximum period. Amplitude changes of this magnitude are likely to cause disruptions to one or more individual GPS satellite links, but the net effect on GPS performance is yet to be determined. A measurement campaign was conducted near Antofagasta, Chile in September 1994 to characterize equatorial ionospheric disturbances and assess their effects on selected satellite-based communication and navigation systems. Although the data were collected during benign solar conditions, substantial fluctuations (6-8 dB) of GPS L-band (L1) signals were observed. An example of L-band scintillation during solar maximum conditions is presented from which it may be possible to estimate the impacts on GPS navigation systems expected during the next solar maximum period around the year 2000. Efforts to quantify scintillation-induced errors and simulate GPS performance in severe scintillation environments are in progress. RP Groves, KM (reprint author), USAF,PHILLIPS LAB,IONOSPHER EFFECTS DIV,GPIA,HANSCOM AFB,MA 01731, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 583 EP 591 PG 9 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00064 ER PT J AU Gleason, D Kawakami, T Sands, R Battis, J Romaides, A AF Gleason, D Kawakami, T Sands, R Battis, J Romaides, A GP INST NAVIGAT TI Mobile gravity vector surveying & precise attitude determination from integrated DGPS/INS & DGPS/INS gravity gradiometer data SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB It is well-known unaccounted systematic errors in high accuracy strapdown INS's and limited resolutions in geodetic GPS receiver phase observables restrict the useful determination of the gravity vector on a mobile platform, usually assumed to be an aircraft. Furthermore, several tests by some organizations have shown eigenmotions of the aircraft further limit the resolution of the recoverable gravity vector signal. In an attmept to overcome such limitiations of a GPS/INS gravity recovery payload, the Air Force is supplementing a land vehicle's multiple antenna GPS/INS nav system with the world's only moving-base, full tensor, gravity gradiometer (GG). The GG will supply the nav system with omnidirectional external gravity gradient updates. The size of the gradiometer's existing and outdated electronics system prevents it from being placed in an aircraft. Installing a state-of-the-art electronics support system would allow future airborne experiments, preferably with state-of-the-art gyroscopic and accelerometer sensors. This paper examines the theoretical and engineering challenges related to developing a mobile GPS/INS/GG gravity vector surveying system. In particular, the paper (1) shows the necessity of multiple-antenna GPS vehicle attitude updates, owing to the inseparable cross-couplings between the north-south leveling error and east-west horizontal or deflection of the vertical component of the vehicle-borne gravity vector and vice versa; (2) presents the Kalman error state models and five types of DGPS and GG external updates required to optimally estimate vehicle-borne gravity vectors from integrated DGPS/INS/GG data streams; and (3) expounds on the results of simulations and error analyses that predict the suitability of demo GPS/INS airborne tests over Ohio wherein the effects of the self-generated errors of the GPS and INS sensors are highlighted. RP Gleason, D (reprint author), USAF,PHILLIPS LAB,GEOPHYS DIRECTORATE,LOWELL,MA 01854, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 637 EP 645 PG 9 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00071 ER PT B AU McConnell, J Rentschler, D Greenberg, R Brooks, R Grimes, F AF McConnell, J Rentschler, D Greenberg, R Brooks, R Grimes, F GP INST NAVIGAT TI GPS availability, reliability and integrity for flight safety SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB Modernization programs planned at the Eastern and Western Ranges, under the auspices of the Air Force Space Command's 30th and 45th Space Wings, envision the future application of GPS-based instrumentation systems to provide Flight Safety tracking data for space and ballistic launch vehicles. The potential of GPS to meet Flight Safety accuracy requirements has been established. The objective of the investigation reported herein is to address availability, reliability and integrity issues which may arise in the application of GPS to Flight Safety. In the context of Flight Safety, availability, reliability and integrity are defined, quantified and explored. Several approaches for meeting Flight Safety requirements in these areas are discussed, and the main conclusions and recommendations are presented. RP McConnell, J (reprint author), USAF,30TH SPACE WING,XPE,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 827 EP 830 PG 4 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00096 ER PT B AU Aretz, AJ Johannsen, C Ober, K AF Aretz, AJ Johannsen, C Ober, K GP HUMAN FACTORS & ERGON SOC TI An empirical validation of subjective workload ratings SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 USAF,COLORADO SPRINGS,CO. NR 0 TC 2 Z9 3 U1 0 U2 0 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 91 EP 95 PG 5 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00018 ER PT B AU Hurwitz, JB AF Hurwitz, JB GP HUMAN FACTORS & ERGON SOC TI Assessing a perceptual model of risky real-time decision making SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 223 EP 227 PG 5 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00043 ER PT B AU Goettl, BP Shebilske, WL ConnollyGomez, C RobertsonSchule, L AF Goettl, BP Shebilske, WL ConnollyGomez, C RobertsonSchule, L GP HUMAN FACTORS & ERGON SOC TI The effects of exercise and alternating task modules in skill acquisition SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 ARMSTRONG LAB,BROOKS AFB,TX 78235. NR 0 TC 0 Z9 0 U1 0 U2 0 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 1097 EP 1101 PG 5 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00211 ER PT B AU Draper, MH Wells, MJ Gawron, VJ Furness, TA AF Draper, MH Wells, MJ Gawron, VJ Furness, TA GP HUMAN FACTORS & ERGON SOC TI Exploring the influence of a virtual body on spatial awareness SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 USAF,HUMAN INTERFACE TECHNOL LAB,SEATTLE,WA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 1146 EP 1150 PG 5 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00221 ER PT B AU Elias, B AF Elias, B GP HUMAN FACTORS & ERGON SOC TI The effects of spatial auditory preview on dynamic visual search performance SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 USAF,ARMSTRONG LAB,NOISE EFFECTS BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 1227 EP 1231 PG 5 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00237 ER PT B AU Muhlbauer, TC Desai, M Brown, JA AF Muhlbauer, TC Desai, M Brown, JA GP IEEE TI Automated classification of small jet engine parts SO PROCEEDINGS OF THE IEEE SOUTHWEST SYMPOSIUM ON IMAGE ANALYSIS AND INTERPRETATION LA English DT Proceedings Paper CT IEEE Southwest Symposium on Image Analysis and Interpretation CY APR 08-09, 1996 CL SAN ANTONIO, TX SP IEEE, IEEE, Signal Proc Soc, IEEE, S Texas Chapter, Univ Texas San Antonio, Univ Arizona, Texas Instruments Inc, Natl Instruments Corp, Tracor Appl Sci Inc, Adv Testing Technol Inc C1 ROBOT & AUTOMAT CTR EXCELLENCE,SA ALC TIER,KELLY AFB,TX 78241. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3200-8 PY 1996 BP 37 EP 42 DI 10.1109/IAI.1996.493723 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BF46A UT WOS:A1996BF46A00007 ER PT B AU Huang, Y Suter, B AF Huang, Y Suter, B GP IEEE TI A study of refinable function vectors via a nonlinear operator SO PROCEEDINGS OF THE IEEE-SP INTERNATIONAL SYMPOSIUM ON TIME-FREQUENCY AND TIME-SCALE ANALYSIS LA English DT Proceedings Paper CT IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis CY JUN 18-21, 1996 CL PARIS, FRANCE SP IEEE, Gisnal Proc Soc, CNRS DE multiresolution analysis; refinable function vectors; wavelets C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3512-0 PY 1996 BP 297 EP 300 DI 10.1109/TFSA.1996.547472 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23N UT WOS:A1996BG23N00075 ER PT B AU Stoddard, P Blachowski, TJ Ostrowski, P AF Stoddard, P Blachowski, TJ Ostrowski, P GP SAFE ASSOC TI Environmental testing of fiber optic lines in aircraft escape system applications .2. SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB The Indian Head Division, Naval Surface Warfare Center (IHDIV, NSWC) is the lead service for Cartridges, Cartridge Actuated Devices (CADs), and Aircrew Escape Propulsion Systems (AEPS) for the Department of Defense. Since 1980, the CAD Research and Development/Product Improvement Branch has been active in laser ignitability studies, design, development, and testing of the Laser Initiated Transfer Energy Subsystem (LITES). The Commodities Directorate of the Ogden Air Logistics Center (OO-ALC/LIWC) at Hill AFB, UT manages all of the CADs and Propellant Actuated Devices (PADs) for the Air Force. Since 1988, OO-ALC/LIWC has been investigating Laser Ordnance Initiation as a replacement for initiators, explosive transfer lines, and ballistic gas hoses used in current aircraft escape systems. During the 1995 SAFE National Symposium, IHDIV, NSWC and OO-ALC/LIWC presented initial findings of the transmission lines when subjected to escape system environmental conditions. This presentation concluded some changes (minor and major) were incurred by the lines which affected their capability to transmit laser energy. The root causes for these changes were not identified as part of the 1995 presentation. To identify these anomalies, IHDIV, NSWC and OO-ALC/LIWC conducted additional environmental testing during 1996. This paper presents these subsequent test results which demonstrate fiber optic lines are viable for escape system applications with proper design and installation. Successful qualification of the fiber optic line components for use in an aircraft environment is now fully anticipated. RP Stoddard, P (reprint author), LIWC,ALC,OO,6033 ELM LANE,HILL AFB,UT 84056, USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 30 EP 48 PG 19 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00005 ER PT J AU Diesel, DA AF Diesel, DA GP SAFE ASSOC TI A conformal foam insert to improve comfort and function of the MBU-20/P positive pressure breathing oxygen mask SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB An insert for the MBU-20/P aircrew oxygen mask has been developed to enhance comfort and performance. The insert is constructed of a supporting framework bonded to conformal foam rim which bolsters the reflective seat of the face piece. It is placed inside the mask to enhance comfort and to seal at high mask cavity pressures and high acceleration by ensuring that the reflective seal lays fiat against the user's face. A study involving 24 subjects was conducted to evaluate comfort of MBU-20/P masks with and without the insert in place. Subjects were not informed regarding the differences between the masks and were not permitted to view the inside of the mask. Masks were fit to seal at a maximum positive breathing pressure of 60 mm Hg. Overall, the insert improved the ability to seal the mask in 13 (54%) subjects, three of whom could not obtain a complete seal without the insert installed. Subjective comfort was evaluated by questionnaire using a numerical scale. Six (29%) of the 21 subjects making the comparison experienced less pressure/pain along the seal when the insert was in place, when considering the entire mask seal. A comparison of the mean score for eight specific facial regions along the seal revealed that seven (33%) subjects saw improvement with the insert installed. A non-blinded comparison of mask performance conducted on a different set of six subjects, using the human centrifuge, revealed that four subjects favored the insert while the remaining two subjects had no preference. All subjects were exposed to assisted positive pressure breathing for acceleration protection (PBG) during rapid onset runs (6 G/sec) to plateaus (15 sec duration) of +5, +7, and +9 G(z). Without the insert, mask leakage was detected in three subjects during exposures at +7 G(z) and in five subjects at +9 G(z). Only one of the six subjects experienced mask leakage with the insert installed and this occurred on the rapid onset exposure at +9 G(z). In summary, the insert improved mask seal function for most of the individuals who typically experience mask leakage during PEG, and it also improved mask comfort in approximately one-third of individuals surveyed. RP Diesel, DA (reprint author), ARMSTRONG LAB,CREW TECHNOL DIV,BROOKS AFB,TX 78235, USA. NR 0 TC 0 Z9 1 U1 0 U2 0 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 222 EP 229 PG 8 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00026 ER PT J AU Urzi, RE AF Urzi, RE GP SAFE ASSOC TI Through-the-canopy egress requirements SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB Modern-day high-performance aircraft use complex multi-requirement transparency systems. A recently completed Air Force Program, entitled ''Mission Integrated Transparency System,'' demonstrated that many of these transparency design drivers are contradictory. An example is the need for increased birdstrike resistance and rapid crew egress. The traditional method of canopy jettison is handicapping crew egress, because of the long delays needed to displace the canopy in clearing the egress path. Hence, new methods of canopy severance would be useful in maintaining birdstrike resistance and allow through-the-canopy crew egress. This paper discusses the various requirements and tradeoffs of a typical high-performance aircraft transparency system, including a brief discussion on current aircrew egress envelopes. The need for faster canopy jettison times is recognized if all other requirements remain the same. RP Urzi, RE (reprint author), USAF,WRIGHT LAB,FIVE,2130 8TH ST,SUITE 1,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 230 EP 236 PG 7 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00027 ER PT J AU Obergefell, L Ma, DR Rizer, A Andries, M AF Obergefell, L Ma, DR Rizer, A Andries, M GP SAFE ASSOC TI Leg clearance predictions using ejection simulations SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB In the attempt to accommodate a broad pilot population, the Joint Primary Aircraft Training System (JPATS) program became concerned about leg clearance of the instrument panel during ejection, especially for pilots with long legs. To determine if leg strikes with the instrument panel were likely in JPATS designs, the Articulated Total Body (ATE) model was used to simulate the body dynamics during ejection. The ATE model is a three-dimensional, rigid body dynamics program developed for the prediction of human body dynamics during hazardous events. Computer simulations were made of three generic JPATS designs using a human body data set representing the dimensions of the large JPATS manikin. The simulations considered the effects of leg straps, designed to restrain the legs when the crewmember enters the windstream, and of increased ankle stiffness due to the crewmember's boots. ATE model simulation results showed possible foot and/or shin strikes with the instrument panel in all three designs. Additionally, two F-16 mishap ejections in which crewmembers did sustain toe scrapes were simulated which verified that the JPATS simulations were properly representing an observed operational response. RP Obergefell, L (reprint author), ARMSTRONG LAB,CFBV,2610 7TH ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 287 EP 294 PG 8 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00034 ER PT B AU Schultz, RB Albery, CB Banks, DL AF Schultz, RB Albery, CB Banks, DL GP SAFE ASSOC TI Measurement of whole-body human center of gravity and moments of inertia SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB With the inclusion of women in combat aircraft, the question of safe ejection seat operation has been raised. The potential expanded population of combat pilots would include both smaller and larger ejection seat occupants, which could significantly affect seat performance. The objective of this study was to develop a precise and systematic method for measuring human whole-body center of gravity (CG) locations and moments of inertia (MOI) of approximately 60 subjects who anthropometrically represent the pilot population (98-245 pounds). The method that has been developed to measure human whole-body CG and MOI uses a scale, a knife edge balance, and an inverted torsional pendulum. The moments of inertia of a subject are measured along six different axes, the inertia tensor is calculated from these values, and principal moments of inertia are derived from the inertia tenser. Thirty eight anthropometric measurements were taken for each subject to provide a means for direct correlation of inertial properties to body dimensions and for modeling purposes. Data collected in this study will be used to validate the Articulated Total Body (ATB) model for use as a predictive tool. In addition, it will be used to provide criteria for use of Air Force and Navy ejection seats by the expanded population. RP Schultz, RB (reprint author), ARMSTRONG LAB,CFBV,2610 7TH ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 454 EP 464 PG 11 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00051 ER PT J AU McCarty, R AF McCarty, R GP SAFE ASSOC TI Next Generation Transparency Program SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc RP McCarty, R (reprint author), USAF,WRIGHT LAB,FIVE,2130 8TH ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 1 U1 0 U2 0 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 469 EP 477 PG 9 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00053 ER PT B AU Zachery, R Wang, SH AF Zachery, R Wang, SH BE NaraghiPour, M TI An explanation of linear discrete time system behavior by singular value decomposition of the system matrix SO PROCEEDINGS OF THE TWENTY-EIGHTH SOUTHEASTERN SYMPOSIUM ON SYSTEM THEORY LA English DT Proceedings Paper CT 28th Southeastern Symposium on System Theory CY MAR 31-APR 02, 1996 CL BATON ROUGE, LA SP Louisiana State Univ, Dept Elect & Comp Engn, Louisiana State Univ, Coll Engn, IEEE, Control Syst Soc, IEEE, Baton Rouge Sect, IEEE, Comp Soc C1 USAF,ARMAMENT DIRECTORATE,NAVIGAT & CONTROL BRANCH,EGLIN AFB,FL 32542. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7352-4 PY 1996 BP 18 EP 22 DI 10.1109/SSST.1996.493464 PG 5 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Mathematics, Applied SC Automation & Control Systems; Computer Science; Engineering; Mathematics GA BF38M UT WOS:A1996BF38M00004 ER PT B AU Miracle, DB Gundel, DB Warrier, S AF Miracle, DB Gundel, DB Warrier, S BE Stoloff, NS Jones, RH TI Interfacial structure and properties for the design of fiber-reinforced metal matrix composites SO PROCESSING AND DESIGN ISSUES IN HIGH TEMPERATURE MATERIALS LA English DT Proceedings Paper CT Engineering Foundation Conference on Processing and Design Issues in High Temperature Materials CY MAY 19-24, 1996 CL DAVOS, SWITZERLAND SP AFOSR, Asea Brown Boveri - Power Generat Ltd, Pacific NW Natl Lab, GKSS, ONR, US DOE, TMS ID SIC FIBER AB A perspective of the design and development of continuously-reinforced Ti-aluminide composites for gas turbine applications will be presented. While axial properties are generally adequate for anticipated design loads, current Ti-aluminide composites are not able to support the required off-axis loads. Approaches to improving the transverse composite properties emphasize improvements in the matrix response and increasing the ability of the fiber/matrix interface to support a normal load. In spite of the large effort to study interface properties in SiC/Ti-alloy composites, relatively little understanding of the transverse response of the complex interfacial region exists. Such an understanding is critical, so that a rational approach to improved interface properties can be undertaken. Early studies have suggested that the interfaces typically employed in continuously-reinforced SiCiTi-alloy composites have no ability to support a normal load beyond that supplied by the compressive radial residual stress. More recent results have shown that these interfaces do indeed possess a significant chemical component to bonding. The experimental and numerical studies which have led to this conclusion will be presented. The ability of typical fiber/matrix interface combinations to support an off-axis load will be quantified, and the sequence of failure for each of the interfacial systems studied will be discussed. The temperature dependence and volume dependence of interface properties will be presented. Comments concerning the structure of C-coatings on the observed properties will be made. C1 USAF, Wright Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RP Miracle, DB (reprint author), USAF, Wright Lab, Mat Directorate, 2230 10th St Ste 1, Wright Patterson AFB, OH 45433 USA. NR 20 TC 6 Z9 6 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-357-0 PY 1996 BP 277 EP 286 PG 10 WC Engineering, Manufacturing; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Engineering; Materials Science; Metallurgy & Metallurgical Engineering GA BM46X UT WOS:000078833700021 ER PT B AU Nicholas, T Rosenberger, AH AF Nicholas, T Rosenberger, AH BE Stoloff, NS Jones, RH TI Fatigue life prediction of titanium matrix composites under mission spectrum loading SO PROCESSING AND DESIGN ISSUES IN HIGH TEMPERATURE MATERIALS LA English DT Proceedings Paper CT Engineering Foundation Conference on Processing and Design Issues in High Temperature Materials CY MAY 19-24, 1996 CL DAVOS, SWITZERLAND SP AFOSR, Asea Brown Boveri - Power Generat Ltd, Pacific NW Natl Lab, GKSS, ONR, US DOE, TMS AB Fatigue life predictions are conducted for a high temperature composite for hypersonic vehicle structural applications. A SCS-6/Timetal(R)21S [0/90](S) composite is evaluated under thermomechanical fatigue (TMF) as well as under typical hypersonic mission profiles and segments of those missions. The fatigue life analysis is based on micromechanical stresses which, in turn, are input into a damage summation model. Spectrum loading is decomposed into a series of in-phase and out-of-phase TMF segments whose lives are predicted from a life fraction model which was developed for isothermal and TMF data. Analytical predictions for the mission spectrum and the simple mission profiles are compared with experimental data obtained here as well as in a previous study. The model is demonstrated to be able to predict fatigue life under mission spectrum loading based solely on calibration under simple isothermal fatigue and TMF conditions. C1 Wright Lab, Mat Directorate, MLLN, Wright Patterson AFB, OH 45433 USA. RP Nicholas, T (reprint author), Wright Lab, Mat Directorate, MLLN, 2230 10th St,Ste 1, Wright Patterson AFB, OH 45433 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-357-0 PY 1996 BP 433 EP 440 PG 8 WC Engineering, Manufacturing; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Engineering; Materials Science; Metallurgy & Metallurgical Engineering GA BM46X UT WOS:000078833700035 ER PT B AU Semiatin, SL Dutton, RE Shamasundar, S AF Semiatin, SL Dutton, RE Shamasundar, S BE Srivatsan, TS Moore, JJ TI Material modeling for the hot consolidation of metal powders and metal-matrix composites SO PROCESSING AND FABRICATION OF ADVANCED MATERIALS IV LA English DT Proceedings Paper CT Symposium on Processing and Fabrication of Advanced Materials IV CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Struct Mat Div TMS, Struct Mat Comm TMS ID PLASTICITY THEORY; COMPACTS; STRESS AB The modeling of the deformation and densification behavior of metal powders during hot consolidation processes was treated through the application of a continuum yield function and associated flow rule modified to incorporate microstructure effects such as grain growth, pore size, and pore geometry. The material-dependent parameters in the yield function/flow rule were the constitutive behavior of the fully dense metal, the stress intensification factor, and Poisson's ratio. Methods to measure the various material parameters were developed and applied for two titanium aluminide alloys (Ti-24Al-11Nb and Ti-48Al-2.5Nb-0.3Ta, in atomic percent). The accuracy of the material modeling approach was validated through a comparison of predicted and observed densification behavior during die-pressing of monolithic alpha-two powder and hot-isostatic pressing of tapecast monotape composite layups comprising Ti-24Al-11Nb powder end continuous silicon carbide fibers. C1 USAF, Wright Lab, MLLN, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RP Semiatin, SL (reprint author), USAF, Wright Lab, MLLN, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 12 TC 0 Z9 0 U1 0 U2 1 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-337-6 PY 1996 BP 39 EP 56 PG 18 WC Materials Science, Multidisciplinary SC Materials Science GA BM49P UT WOS:000078897000004 ER PT B AU Nicolaou, PD Semiatin, SL AF Nicolaou, PD Semiatin, SL BE Srivatsan, TS Moore, JJ TI Processing and properties of rapidly-consolidated metal matrix composites SO PROCESSING AND FABRICATION OF ADVANCED MATERIALS IV LA English DT Proceedings Paper CT Symposium on Processing and Fabrication of Advanced Materials IV CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Struct Mat Div TMS, Struct Mat Comm TMS ID CONTINUOUS FIBER; FRACTURE AB The feasibility of consolidating foil/fiber/foil layups by a forging, as opposed to a conventional hot isostatic pressing, approach was investigated in order to demonstrate a low cost alternative for the fabrication of metal matrix composites (MMCs). Attention was focused on the magnitude of the stresses required to forge consolidate layups and the possible influence of such stresses on fiber damage. In particular, it was established that fiber damage is most likely a result of tangential tensile stresses which are generated during forging and which can thus result in radial cracking. However, it was demonstrated that fiber fracture can be minimized or avoided by the judicious selection of forging speed and preheat temperature. The efficacy of the rapid consolidation method was verified by measurements of the mechanical properties of composites and comparison of the results to those for similar (HIP consolidated) materials as reported in the literature. The room-temperature tensile and fatigue properties were comparable for the two consolidation methods, thus validating the suitability of the high-rate fabrication approach. C1 USAF, Wright Lab, Mat Directorate, WL,MLLN, Wright Patterson AFB, OH 45433 USA. RP Nicolaou, PD (reprint author), USAF, Wright Lab, Mat Directorate, WL,MLLN, Wright Patterson AFB, OH 45433 USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 22 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-337-6 PY 1996 BP 547 EP 560 PG 14 WC Materials Science, Multidisciplinary SC Materials Science GA BM49P UT WOS:000078897000041 ER PT B AU Hay, RS AF Hay, RS BE Srivatsan, TS Moore, JJ TI Solution and sol-gel methods for coating fiber tows SO PROCESSING AND FABRICATION OF ADVANCED MATERIALS V LA English DT Proceedings Paper CT Symposium on Processing and Fabrication of Advanced Materials V, at Materials Meet 96 CY OCT 06-10, 1996 CL CINCINNATI, OH SP Minerals Met & Mat Soc, Structural Mat Div, Struct Mat Comm ID GLASS-CAPILLARIES; INTERFACE AB A method for coating fiber tows with solutions and sols is described. Coatings may be applied in any type of atmosphere at rates from 1 mm/s to 10 cm/s and cured in-line at temperatures as high as 1700 degrees C. To avoid cementing the filaments in the fiber tow together with the coating, an immiscible liquid is used to displace excess coating sol or solution from the fiber tow. Characteristics of sols or solutions that make the best coatings are discussed. Limitations of the method are also discussed. An advantage of the method is economy and relative ease of stoichiometry control for complex oxides. A disadvantage is the non-uniformity in coating thickness that frequently is present. Fiber strength degradation after coating is common and is often severe. The flaws which cause strength degradation are unknown. C1 Wright Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RP Hay, RS (reprint author), Wright Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. NR 23 TC 0 Z9 0 U1 0 U2 1 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-349-X PY 1996 BP 481 EP 488 PG 8 WC Materials Science, Ceramics; Metallurgy & Metallurgical Engineering; Materials Science, Coatings & Films; Materials Science, Composites SC Materials Science; Metallurgy & Metallurgical Engineering GA BM42Z UT WOS:000078691600036 ER PT J AU Skop, BP Brown, TM AF Skop, BP Brown, TM TI Potential vascular and bleeding complications of treatment with selective serotonin reuptake inhibitors SO PSYCHOSOMATICS LA English DT Review ID DEPRESSIVE PATIENTS; FLUOXETINE; BLOOD; PLATELETS; ENDOTHELIUM; 5-HYDROXYTRYPTAMINE; ANTAGONISTS; FLUVOXAMINE; SERTRALINE; RECEPTORS AB Selective serotonin reuptake inhibitors (SSRIs) alter peripheral handling of serotonin, leading to potential side effects. Further, the majority of the body's serotonin is found outside the central nervous system. Peripheral serotonin is important in platelet aggregation and the modulation of vascular tone. SSRIs block platelet uptake and pulmonary endothelial metabolism of serotonin, and use of these agents may conceivably result in bleeding and vasospastic complications. RP Skop, BP (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,WHMC,PSCCE,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 41 TC 110 Z9 113 U1 1 U2 2 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0033-3182 J9 PSYCHOSOMATICS JI Psychosomatics PD JAN-FEB PY 1996 VL 37 IS 1 BP 12 EP 16 PG 5 WC Psychiatry; Psychology SC Psychiatry; Psychology GA TN293 UT WOS:A1996TN29300003 PM 8600488 ER PT B AU Fugate, RQ AF Fugate, RQ BE Little, CE Sabotinov, NV TI The use of copper-vapor lasers in guide-star applications SO PULSED METAL VAPOUR LASERS SE NATO ADVANCED SCIENCE INSTITUTE SERIES, SUB-SERIES 1: DISARMAMENT TECHNOLOGIES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Pulsed Metal Vapour Lasers - Physics and Emerging Applications in Industry, Medicine and Science CY AUG 06-10, 1995 CL UNIV ST ANDREWS, ST ANDREWS, SCOTLAND SP NATO HO UNIV ST ANDREWS RP Fugate, RQ (reprint author), USAF,PHILLIPS LAB,STARFIRE OPT RANGE,KIRTLAND AFB,NM 87117, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-4002-7 J9 NATO SCI S 1 DISARM PY 1996 VL 5 BP 431 EP 440 PG 10 WC Optics; Physics, Applied; Physics, Condensed Matter SC Optics; Physics GA BG92G UT WOS:A1996BG92G00046 ER PT B AU Rasmussen, JL Haupt, RL Walker, MJ AF Rasmussen, JL Haupt, RL Walker, MJ BE Miceli, WJ TI RCS feature extraction from simple targets using time-frequency analysis SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE radar target identification; Fourier; wavelets; frequency domain AB Radar target identification requires the processing of a large amount of data Radar cross section alone is a function of time/frequency, aspect angle, and polarization. Storing all this data as well as processing it for identification is an extremely difficult task. The goal of this research is to analyze the RCS of simple targets in the time/frequency domain to identify which time/frequency algorithms best highlight distinguishing target characteristics. We have taken extensive RCS measurements on simple objects, such as spheres, cubes, pyramids and corner reflectors, and processed the data using Fourier and wavelet transforms. In most instances, the data can be significantly compressed. RP Rasmussen, JL (reprint author), USAF ACAD,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 66 EP 74 DI 10.1117/12.257246 PG 9 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00007 ER PT B AU Willis, M Orgusaar, R Min, K AF Willis, M Orgusaar, R Min, K BE Ustach, GS TI Ultra-wideband radar technology development SO RADAR SENSOR TECHNOLOGY SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Sensor Technology CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 USAF,WRIGHT LAB,ARMAMENT DIRECTORATE,EGLIN AFB,FL 32542. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2128-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2747 BP 10 EP 19 PG 10 WC Optics SC Optics GA BG07V UT WOS:A1996BG07V00002 ER PT B AU Turbyfill, ME Lutsko, JM Walge, EK Berinato, RJ Budge, MC AF Turbyfill, ME Lutsko, JM Walge, EK Berinato, RJ Budge, MC BE Ustach, GS TI Acousto-optic processor for jammer suppression in land-based radars SO RADAR SENSOR TECHNOLOGY SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Sensor Technology CY APR 08-09, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE acousto-optic cell; phased array; correlation; intermediate frequency; tapped delay line C1 USAF,ROME LAB,ROME,NY 13441. NR 0 TC 3 Z9 3 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2128-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2747 BP 86 EP 97 DI 10.1117/12.243067 PG 12 WC Optics SC Optics GA BG07V UT WOS:A1996BG07V00010 ER PT J AU Snearly, WN Kaplan, PA Dussault, RG AF Snearly, WN Kaplan, PA Dussault, RG TI Lateral-compartment bone contusions in adolescents with intact anterior cruciate ligaments SO RADIOLOGY LA English DT Article DE bones, injuries; knee, injuries; knee, ligaments, menisci, and cartilage; knee, MR ID SECONDARY SIGNS; TEARS; INJURY AB PURPOSE: To determine how often lateral-compartment bone contusions are seen on magnetic resonance (MR) images of knees in adolescents with intact anterior cruciate ligaments (ACLs). MATERIALS AND METHODS: MR images obtained in 53 adolescent patients (30 male, 23 female; aged 10-20 years) were reviewed to detect bone contusions in the posterolateral tibial plateau or the lateral femoral condyle. ACLs were also evaluated with accepted criteria for the diagnosis of ligamental disruption. Only patients referred for evaluation of a knee injury or mechanical symptoms were included. RESULTS: Five patients with bone contusions had an intact ACL at MR imaging. One of the five had arthroscopic confirmation. Fifteen other patients had complete ACL disruptions: 13 of these patients had typical bone contusions; the other two had no bone abnormalities but had chronic ACL tears. Thus, 28% of the 18 patients with typical bone contusions had intact ACLs. CONCLUSION: Adolescents may have the same pattern of contusions as adults but may maintain an intact ACL owing to increased ligamentous laxity. C1 UNIV VIRGINIA,MED CTR,DEPT RADIOL,CHARLOTTESVILLE,VA. UNIV VIRGINIA,MED CTR,DEPT ORTHOPAED,CHARLOTTESVILLE,VA. RP Snearly, WN (reprint author), USAF,MED CTR,DEPT MUSCULOSKELETAL RADIOL,WILFORD HALL,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 16 TC 38 Z9 40 U1 0 U2 0 PU RADIOLOGICAL SOC NORTH AMER PI EASTON PA 20TH AND NORTHAMPTON STS, EASTON, PA 18042 SN 0033-8419 J9 RADIOLOGY JI Radiology PD JAN PY 1996 VL 198 IS 1 BP 205 EP 208 PG 4 WC Radiology, Nuclear Medicine & Medical Imaging SC Radiology, Nuclear Medicine & Medical Imaging GA TM680 UT WOS:A1996TM68000041 PM 8539379 ER PT S AU Silkowski, E Yeo, YK Hengehold, RL Goldenberg, B Pomrenke, GS AF Silkowski, E Yeo, YK Hengehold, RL Goldenberg, B Pomrenke, GS BE Coffa, S Polman, A Schwartz, RN TI Neodymium and erbium implanted GaN SO RARE EARTH DOPED SEMICONDUCTORS II SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT 2nd MRS Symposium on Rare Earth Doped Semiconductors CY APR 08-10, 1996 CL SAN FRANCISCO, CA SP Mat Res Soc, High Voltage Engn Europa B V, CNR, SGS Thomson, USA, Res Off C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 26 Z9 26 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-325-8 J9 MATER RES SOC SYMP P PY 1996 VL 422 BP 69 EP 74 PG 6 WC Materials Science, Coatings & Films SC Materials Science GA BG61W UT WOS:A1996BG61W00010 ER PT S AU Stadler, BJH Lorenzo, JP AF Stadler, BJH Lorenzo, JP BE Coffa, S Polman, A Schwartz, RN TI Increased refractive indices in rare earth doped InP and In0.53Ga0.47As thin films SO RARE EARTH DOPED SEMICONDUCTORS II SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT 2nd MRS Symposium on Rare Earth Doped Semiconductors CY APR 08-10, 1996 CL SAN FRANCISCO, CA SP Mat Res Soc, High Voltage Engn Europa B V, CNR, SGS Thomson, USA, Res Off C1 USAF,ROME LAB,OPT COMPONENTS BRANCH,BEDFORD,MA 01731. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-325-8 J9 MATER RES SOC SYMP P PY 1996 VL 422 BP 357 EP 362 PG 6 WC Materials Science, Coatings & Films SC Materials Science GA BG61W UT WOS:A1996BG61W00048 ER PT J AU Green, DM AF Green, DM TI Iliac crest bone graft pain: Simplicity revisited SO REGIONAL ANESTHESIA LA English DT Letter RP Green, DM (reprint author), USAF,ANESTHESIA SERV,MED OPERAT SQUADRON 60,DEPT SURG,TRAVIS AFB,CA 94535, USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU CHURCHILL LIVINGSTONE INC MEDICAL PUBLISHERS PI NEW YORK PA 650 AVENUE OF THE AMERICAS, NEW YORK, NY 10011 SN 0146-521X J9 REGION ANESTH JI Reg. Anesth. PD JAN-FEB PY 1996 VL 21 IS 1 BP 77 EP 77 PG 1 WC Anesthesiology SC Anesthesiology GA TT015 UT WOS:A1996TT01500017 PM 8826032 ER PT B AU Hu, SF Gundel, DB Matikas, TE Karpur, P Clemens, GS AF Hu, SF Gundel, DB Matikas, TE Karpur, P Clemens, GS BE Thompson, DO Chimenti, DE TI Quantitative ultrasonic characterization of metal matrix composite fiber/matrix interfacial failure SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 15A AND 15B SE REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION LA English DT Proceedings Paper CT 22nd Symposium on Quantitative Nondestructive Evaluation CY JUL 30-AUG 04, 1995 CL SEATTLE, WA C1 WRIGHT LAB,MLLP,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45310-X J9 REV PROG Q PY 1996 VL 15 BP 1263 EP 1270 PN A&B PG 8 WC Engineering, Mechanical; Materials Science, Characterization & Testing SC Engineering; Materials Science GA BF79A UT WOS:A1996BF79A00164 ER PT B AU Morgan, DR AF Morgan, DR BE Alferov, ZI Gulyaev, YV Pape, DR TI An advanced optical network architecture for integrated digital avionics SO SECOND INTERNATIONAL CONFERENCE ON OPTICAL INFORMATION PROCESSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 2nd International Conference on Optical Information Processing CY JUN 17-21, 1996 CL ST PETERSBURG, RUSSIA SP St Petersburg State Acad Aerosp Instrumentat, St Petersburg Higher Fire Tech Sch, Russian Federat Higher Educ, State Comm, Minist Sci & Tech Policy Russia, Russian Fdn Basic Res, Municipal St Petersburg City, Soc Photo Opt Instrumentat Engineers, Soc Photo Opt Instrumentat Engineers, Russia Chapter, Russian Acad Sci, A F Ioffe Phys Tech Inst, Russian Acad Sci, Inst Radio Engn & Electr AB For the first time in the history of avionics, the network designer now has a choice in selecting the media that interconnects the sources and sinks of digital data on aircraft. Electrical (twisted shielded pair or coax) designs are already giving way to photonics in application areas where the data rate times distance product is large or where special design requirements such as low weight or EMI considerations are critical. Future digital avionic architectures will increasingly favor the use of photonic interconnects as network data rates of one gigabit/second and higher are needed to support real-time operation of high-speed integrated digital processing. As the cost of optical network building blocks (eg., transceivers, switches, connectors, backplanes) is reduced and as temperature-rugged laser sources are matured, metal interconnects will be forced to retreat to applications spanning shorter and shorter distances. Although the trend is already underway, the widespread use of digital optics will first occur at the system level, where Gigabit/second, real-time interconnects between sensors, processors, mass memories and displays separated. by a least of few meters will be required. The application of photonic interconnects for inter-printed wiring board signalling across the backplane (tens of centimeters) will eventually find application for Gigabit/second applications since signal degradation over copper traces occurs before one Gigabit/second and 0.5 meters are reached. For the foreseeable future however, metal interconnects will continue to used to interconnect devices on printed wiring boards since 5 Gigabit/second signals can be sent over metal up to around 15 centimeters. Current-day applications of optical interconnects at the system level are described and a projection of how advanced optical interconnect technology will be driven by the use of high speed integrated digital processing on future aircraft is presented. The recommended advanced network for application in the 2010 time frame is a fiber-based system with a signalling speed of around 2-3 Gigabits per second. This switch-based unified network will interconnect sensors, displays, mass memory and controls and displays to computer modules within the processing complex. The characteristics of required building blocks needed for the future are described. These building blocks include the fiber, an optical switch, a laser-based transceiver, blind-mate connectors and an optical backplane. RP Morgan, DR (reprint author), USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2375-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2969 BP 40 EP 47 DI 10.1117/12.262640 PG 8 WC Engineering, Electrical & Electronic; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BH07F UT WOS:A1996BH07F00006 ER PT B AU Reisner, JA Wailes, TS AF Reisner, JA Wailes, TS GP IEEE TI A cache coherency protocol for optically connected parallel computer systems SO SECOND INTERNATIONAL SYMPOSIUM ON HIGH-PERFORMANCE COMPUTER ARCHITECTURE, PROCEEDINGS LA English DT Proceedings Paper CT 2nd International Symposium on High-Performance Computer Architecture (HPCA-2) CY FEB 03-07, 1996 CL SAN JOSE, CA SP IEEE, Comp Soc, Tech Comm Comp Architecture C1 STANDARD SYST GRP,AUTOMATED COMMUN SYST DIRECTORATE,TINKER AFB,OK 73145. NR 0 TC 1 Z9 1 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7237-4 PY 1996 BP 222 EP 231 DI 10.1109/HPCA.1996.501188 PG 10 WC Computer Science, Hardware & Architecture SC Computer Science GA BF28H UT WOS:A1996BF28H00020 ER PT B AU Stutz, CE Jogai, B Look, DC AF Stutz, CE Jogai, B Look, DC BE Bullis, WM Seiler, DG Diebold, AC TI Electrochemical capacitance-voltage, magneto-Hall and theoretical analysis of heterostructure transistor material SO SEMICONDUCTOR CHARACTERIZATION: PRESENT STATUS AND FUTURE NEEDS LA English DT Proceedings Paper CT International Workshop on Semiconductor Characterization - Present Status and Future Needs CY JAN 30-FEB 02, 1995 CL NATL INST STAND & TECHNOL, GAITHERSBURG, MD SP Adv Res Projects Agcy, SEMATECH, Natl Inst Stand & Technol, USA, Army Res Off, US DOE, Natl Sci Fdn, Semiconductor Equipment & Mat Int, Amer Vacuum Soc, Mfg Sci & Technol Div, Comm Civilian Ind Technol, Working Grp Electr Mat HO NATL INST STAND & TECHNOL C1 WRIGHT LAB,ELR,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 BN 1-56396-503-8 PY 1996 BP 683 EP 687 PG 5 WC Chemistry, Analytical; Engineering, Electrical & Electronic; Engineering, Mechanical; Materials Science, Characterization & Testing SC Chemistry; Engineering; Materials Science GA BE98R UT WOS:A1996BE98R00099 ER PT J AU Cook, J AF Cook, J GP ASSOC FACIL ENGN TI Disaster preparedness 2001 - Setting a new pace for engineer preparedness SO SETTING A NEW PACE IN FACILITIES ENGINEERING: HIGHLIGHTS OF AFE'S 1996 ANNUAL CONFERENCE, PLUS WINNING ENTRIES FROM THE 1996 FACILITIES MANAGEMENT EXCELLENCE (FAME) AWARDS PROGRAM LA English DT Proceedings Paper CT 1996 Annual Conference of the Association-for-Facilities-Engineering - Setting a New Pace in Facilities Engineering CY OCT 19-23, 1996 CL CHARLOTTE, NC SP Assoc Facil Engn AB The Oklahoma bombing in 1995, hurricanes in the southeastern United States, monumental flooding in the Midwest, earthquakes and fires in the West and the growing number of terrorist activities alert all of ns to the need to be prepared to handle a disaster at our facilities. The Incident Command System (ICS) gives the facility engineer the tools necessary to minimize the negative impact of a disaster. ICS is a group of principles used by government and industry for coordinating industry and government emergency response. The ICS provides the tools to establish a multiple level emergency response organization and is intended to facilitate the flow of emergency information and resources within and between organizational levels. ICS is recognizable to ex-military personnel as similar to the fundamental organization system used by military organizations for over 70 years, around the world, to accomplish military operations. This paper will examine the strengths of the ICS system and the value of implementing the civilian based ICS organizational system to assist facilities engineers to set a new pace for disaster preparedness. RP Cook, J (reprint author), USAF,FLORIDA AIR NATL GUARD,RED HORSSE COMBAT ENGINEERS 202D,EGLIN AFB,FL 32542, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSOCIATION FACILITIES ENGINEERING PI CINCINNATI PA 8/80 CORPORATE PARK DRIVE, SUITE 305, CINCINNATI, OH 45242 PY 1996 BP 93 EP 99 PG 3 WC Engineering, Industrial SC Engineering GA BH39B UT WOS:A1996BH39B00005 ER PT B AU Zelnio, E Garber, F AF Zelnio, E Garber, F BE Kadar, I Libby, V TI A characterization of ATR performance evaluation SO SIGNAL PROCESSING, SENSOR FUSION, AND TARGET RECOGNITION V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Signal Processing, Sensor Fusion, and Target Recognition V Conference CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE target recognition; performance estimation; intrinsic separability C1 USAF,WRIGHT LAB,AAC,COMBAT INFORMAT DIV,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2136-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2755 BP 2 EP 13 DI 10.1117/12.243149 PG 12 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF93H UT WOS:A1996BF93H00001 ER PT B AU Currie, NC Demma, FJ Ferris, DD McMillan, RW Wicks, MC AF Currie, NC Demma, FJ Ferris, DD McMillan, RW Wicks, MC BE Kadar, I Libby, V TI ARPA/NIJ/Rome laboratory concealed weapon detection program: An overview SO SIGNAL PROCESSING, SENSOR FUSION, AND TARGET RECOGNITION V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Signal Processing, Sensor Fusion, and Target Recognition V Conference CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE concealed weapon detection; law enforcement multiple sensors; imaging systems C1 USAF,ROME LAB,OC,GRIFFISS AFB,NY 13441. NR 0 TC 9 Z9 9 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2136-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2755 BP 492 EP 502 DI 10.1117/12.243190 PG 11 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF93H UT WOS:A1996BF93H00047 ER PT S AU Mitchel, WC Roth, MD Evwaraye, AO Yu, PW Smith, SR Jenny, J Skowronski, M Hobgood, HM Glass, RC Augustine, G Hopkins, RH AF Mitchel, WC Roth, MD Evwaraye, AO Yu, PW Smith, SR Jenny, J Skowronski, M Hobgood, HM Glass, RC Augustine, G Hopkins, RH BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Electronic properties of semi-insulating vanadium-doped 6H-SiC SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN AB Deep levels in bulk 6H-SiC have been studied by Optical Admittance Spectroscopy (GAS), temperature dependent Hall effect, Optical Absorption and Secondary Ion Mass Spectroscopy (SIMS). Temperature dependent Hall effect measurements give activation energies between 0.3 and 1.35 eV. Specific levels are identified by OAS are found in the range 0.78 to 1.59 eV. Impurities are identified by Optical Absorption and SIMS. Deep levels observed by OAS in n-type material at 0.78, 1.09 and 1.59 eV are attributed to vanadium. The latter level compensates residual acceptros to produce insulating material. C1 CARNEGIE MELLON UNIV,DEPT MAT SCI & ENGN,PITTSBURGH,PA 15213. WESTINGHOUSE SCI & TECHNOL CTR,PITTSBURGH,PA 15235. RP Mitchel, WC (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI Skowronski, Marek/A-8934-2011 OI Skowronski, Marek/0000-0002-2087-0068 NR 7 TC 17 Z9 17 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 313 EP 316 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00075 ER PT S AU Smith, SR Evwaraye, AO Steckl, AJ Yuan, C Mitchel, WC Roth, MD AF Smith, SR Evwaraye, AO Steckl, AJ Yuan, C Mitchel, WC Roth, MD BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Determination of the conduction band discontinuity in an n-type 3C-SiC/6H-SiC heterojunction. SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN ID ADMITTANCE SPECTROSCOPY AB We have used high-temperature admittance spectroscopy measurements to determine the conduction band discontinuity of a 3C/6H-SiC heterojunction. This is the first experimental determination of the band discontinuity in this system. Using thermal admittance spectroscopy, we have determined me conduction band discontinuity in an n-n, 3C/6H-SiC heterojunction to be Delta E(C) = 0.365 eV. The doping in the 3C-SiC layer was determined by capacitance-voltage measurements to be 2 x 10(17) cm(-3). By implication, since the total band gap difference is 0.633 eV, the valence band discontinuity can be calculated to be Delta E(V) = 0.268 eV. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. UNIV CINCINNATI,DEPT ELECT & COMP ENGN,NANOELECTR LAB,CINCINNATI,OH 45221. RP Smith, SR (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 9 TC 1 Z9 1 U1 1 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 317 EP 319 PG 3 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00076 ER PT S AU Scofield, JD Yeo, YK Hengehold, RL AF Scofield, JD Yeo, YK Hengehold, RL BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Deep level study of as-grown and ion implanted bulk and MOCVD grown epitaxial 6H-SiC SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN AB Deep level transient spectroscopy measurements from 100 to 800 K were made on nand p-type 6H-SiC implanted with Cr and Mg. Acceptor levels at E(c)-0.236 and E(c)-0.195 eV in n-material have been tentatively assigned to substitutional Or residing at inequivalent (h,k) lattice sites. A Mg specific level has been determined to be located at E(c)-0.510 eV. However, site inequivalencies are not observed for this center possibly indicating an extended defect or complex. P-type implanted material is observed to contain several damage-related deep levels including an intrinsic level at E(v)+0.982 eV, but Cr- or Mg- impurity related hole trap levels were not observed in the lower portion of the band gap. C1 WRIGHT LAB,AEROPROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH. RP Scofield, JD (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 14 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 329 EP 332 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00079 ER PT S AU Liu, S Reinhardt, K Severt, C Scofield, J AF Liu, S Reinhardt, K Severt, C Scofield, J BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Thermally stable ohmic contacts on n-type 6H- and 4H-SiC based on silicide and carbide SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN ID NITRIDE AB We have successfully obtained ohmic contacts on n-type 6H- and 4H-SiC using Ni, Ni/W, Ni/Ti/W, Ni/Cr/W, CrMr, and Cr/Mo/W metallization systems. Ohmic contacts on both 6H- and 4H-SiC were formed after annealing at 1000 to 1050 degrees C for 5 to 10 minutes. AES chemical depth profiles revealed considerable interdiffusion, and x-ray diffractions identified the formation of a Ni2Si silicide and a Cr3C2 cart,ide after annealing for the Ni and Cr based systems, respectively. Both Ni/Cr/W and Cr/Mo/W contacts are stable when aged at 650 degrees C for 1000 hours. C1 AERO PROP & POWER DIRECTORATE,AEROSP POWER DIV,WRIGHT PATTERSON AFB,OH 45433. RP Liu, S (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 7 TC 14 Z9 14 U1 0 U2 4 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 589 EP 592 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00144 ER PT B AU Crespo, A AF Crespo, A BE Varadan, VK McWhorter, PJ TI AOTF interrogation scheme for FBG SO SMART STRUCTURES AND MATERIALS 1996: SMART ELECTRONICS AND MEMS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Electronics and MEMS - Smart Structures and Materials 1996 CY FEB 28-29, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE smart skins; acousto-optic tunable filter; wavelength division multiplexing; fiber Bragg gratings C1 USAF,WRIGHT LAB,ELDO,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2097-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2722 BP 107 EP 110 DI 10.1117/12.240434 PG 4 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Optics SC Engineering; Optics GA BF76N UT WOS:A1996BF76N00012 ER PT B AU Tascione, TF Preble, AJ AF Tascione, TF Preble, AJ BE Balasubramaniam, KS Keil, SL Smartt, RN TI Need for space weather models SO SOLAR DRIVERS OF INTERPLANETARY AND TERRESTRIAL DISTURBANCES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 16th National Solar Observatory/Sacramento Peak International Workshop on Solar Drivers of Interplanetary and Terrestrial Disturbances CY OCT 16-20, 1995 CL SUNSPOT, NM SP Natl Solar Observ, Sacramento Peak C1 USAF,AIR FORCE DIRECTORATE WEATHER,HEADQUARTERS,WASHINGTON,DC 20330. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-16-3 J9 ASTR SOC P PY 1996 VL 95 BP 16 EP 25 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG32E UT WOS:A1996BG32E00002 ER PT B AU Tschan, C AF Tschan, C BE Balasubramaniam, KS Keil, SL Smartt, RN TI Directions for solar and interplanetary models and sensors: A space operator's perspective SO SOLAR DRIVERS OF INTERPLANETARY AND TERRESTRIAL DISTURBANCES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 16th National Solar Observatory/Sacramento Peak International Workshop on Solar Drivers of Interplanetary and Terrestrial Disturbances CY OCT 16-20, 1995 CL SUNSPOT, NM SP Natl Solar Observ, Sacramento Peak C1 50TH WEATHER SQUADRON,CC,FALCON AFB,CO 80912. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-16-3 J9 ASTR SOC P PY 1996 VL 95 BP 30 EP 33 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG32E UT WOS:A1996BG32E00004 ER PT J AU Reynolds, DC Look, DC Jogai, B McCoy, GL AF Reynolds, DC Look, DC Jogai, B McCoy, GL TI Ground and excited states associated with donor bound-excitons in high purity GaAs SO SOLID STATE COMMUNICATIONS LA English DT Article DE semiconductors; optical processes; luminescence ID RESIDUAL DONORS; EPITAXIAL GAAS; INDIUM-PHOSPHIDE; GALLIUM-ARSENIDE; IDENTIFICATION; SPECTROSCOPY AB Four emission lines have been observed in high purity GaAs, which are associated with excitons bound to a shallow neutral donor. The lowest energy line is the ground state; the three higher energy lines are due to excited states of the neutral donor-bound exciton. The excited states consist of a rotation of light and heavy holes around the donor as was previously observed in InP. The experimentally observed energy ordering of the two exited states associated with the light-hole was previously found to be reversed from that predicted by theory for the case of InP. In the case of GaAs, the present work shows that the ordering of these two states agrees with the ordering predicted by theory. Two additional excited states were also observed; they may be associated with the next higher rotational quantum state (l = 2). C1 WRIGHT LAB, ELR, SOLID STATE ELECTR DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. RP WRIGHT STATE UNIV, UNIV RES CTR, DAYTON, OH 45435 USA. NR 12 TC 2 Z9 2 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0038-1098 EI 1879-2766 J9 SOLID STATE COMMUN JI Solid State Commun. PD JAN PY 1996 VL 97 IS 1 BP 59 EP 61 DI 10.1016/0038-1098(95)00513-7 PG 3 WC Physics, Condensed Matter SC Physics GA TE445 UT WOS:A1996TE44500012 ER PT J AU Liou, LL Bayraktaroglu, B Huang, CI AF Liou, LL Bayraktaroglu, B Huang, CI TI Theoretical thermal runaway analysis of heterojunction bipolar transistors: Junction temperature rise threshold SO SOLID-STATE ELECTRONICS LA English DT Article ID SIMULATION; RESISTANCE AB The thermal runaway behavior of single- and multiple-emitter-element heterojunction bipolar transistors (HBTs) under both voltage and current modulated operations was studied. Under voltage modulation, thermal runaway causes device destruction due to an ever increasing junction temperature. Under current modulation, thermal runaway induces current instability concurrent with the formation of hot spots. It is found theoretically that thermal runaway occurs when the junction temperature rise reaches a threshold value. The dependence of this value for both current and voltage modulation modes of operation on device electrical and thermal parameters is numerically calculated. The electrical parameters include the negative temperature coefficient of the base-emitter turn-on voltage, base current ideality factor, apparent valence band discontinuity for npn HBT and emitter ballast resistance. The thermal parameters include the self-induced and coupled thermal resistances. RP Liou, LL (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 20 TC 17 Z9 17 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD JAN PY 1996 VL 39 IS 1 BP 165 EP 172 DI 10.1016/0038-1101(95)96867-N PG 8 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA TG801 UT WOS:A1996TG80100025 ER PT J AU Linster, BG AF Linster, BG TI Artificial intelligence frontiers in statistics: AI and statistics .3 - Hand,DJ SO SOUTHERN ECONOMIC JOURNAL LA English DT Book Review RP Linster, BG (reprint author), USAF ACAD,COLORADO SPRINGS,CO, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV NORTH CAROLINA PI CHAPEL HILL PA SOUTHERN ECONOMIC JOURNAL, CHAPEL HILL, NC 27514 SN 0038-4038 J9 SOUTHERN ECON J JI South. Econ. J. PD JAN PY 1996 VL 62 IS 3 BP 811 EP 812 DI 10.2307/1060915 PG 2 WC Economics SC Business & Economics GA TQ234 UT WOS:A1996TQ23400038 ER PT S AU Hampsten, KR AF Hampsten, KR BE ElGenk, MS TI An air launched, highly responsive military transatmospheric vehicle (TAV), based on existing aerospace systems SO SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM (STAIF-96), PTS 1-3: 1ST CONFERENCE ON COMMERCIAL DEVELOPMENT OF SPACE; 1ST CONFERENCE ON NEXT GENERATION LAUNCH SYSTEMS; 2ND SPACECRAFT THERMAL CONTROL SYMPOSIUM; 13TH SYMPOSIUM ON SPACE NUCLEAR POWER AND PROPULSION - FUTURE SPACE AND EARTH SCIENCE MISSIONS - SPECIAL TOPIC; REMOTE SENSING FOR COMMERCIAL, CIVIL AND SCIENCE APPLICATIONS - SPECIAL TOPIC SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Space Technology and Applications International Forum (STAIF -96) CY JAN 07-11, 1996 CL ALBUQUERQUE, NM SP Univ New Mexico, Inst Space & Cucl Power Studies, Def Nucl Agcy, NASA, US DOE, USAF, Amer Inst Aeronaut & Astronaut, Natl Sect, Amer Inst Aeronaut & Astronaut, Local Sect, Amer Inst Chem Engineers, Heat Transfer & Energy Convers Div, Amer Nucl Soc, Trinity Sect, Amer Soc Mech Engineers, Nucl Engn Div, Amer Soc Mech Engineers, Heat Transfer Div, ASTM, Comm E 10 Nucl Technol & Appl, Int Astronaut Federat, IEEE, Microwave Theory & Tech Soc, IEEE, Nucl & Plasma Sci Soc, New Mexico Acad Sci, New Mexico Space Grant Consortium, Profess Aerosp Contractors Assoc C1 USAF,PHILLIPS LAB,SPACE & MISSILE TECHNOL DEPT VTX,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-562-3 J9 AIP CONF PROC PY 1996 IS 361 BP 555 EP 563 PG 9 WC Engineering, Aerospace; Physics, Applied SC Engineering; Physics GA BE99C UT WOS:A1996BE99C00096 ER PT S AU Grelck, JG AF Grelck, JG BE ElGenk, MS TI Dual use of launch and support assets SO SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM (STAIF-96), PTS 1-3: 1ST CONFERENCE ON COMMERCIAL DEVELOPMENT OF SPACE; 1ST CONFERENCE ON NEXT GENERATION LAUNCH SYSTEMS; 2ND SPACECRAFT THERMAL CONTROL SYMPOSIUM; 13TH SYMPOSIUM ON SPACE NUCLEAR POWER AND PROPULSION - FUTURE SPACE AND EARTH SCIENCE MISSIONS - SPECIAL TOPIC; REMOTE SENSING FOR COMMERCIAL, CIVIL AND SCIENCE APPLICATIONS - SPECIAL TOPIC SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Space Technology and Applications International Forum (STAIF -96) CY JAN 07-11, 1996 CL ALBUQUERQUE, NM SP Univ New Mexico, Inst Space & Cucl Power Studies, Def Nucl Agcy, NASA, US DOE, USAF, Amer Inst Aeronaut & Astronaut, Natl Sect, Amer Inst Aeronaut & Astronaut, Local Sect, Amer Inst Chem Engineers, Heat Transfer & Energy Convers Div, Amer Nucl Soc, Trinity Sect, Amer Soc Mech Engineers, Nucl Engn Div, Amer Soc Mech Engineers, Heat Transfer Div, ASTM, Comm E 10 Nucl Technol & Appl, Int Astronaut Federat, IEEE, Microwave Theory & Tech Soc, IEEE, Nucl & Plasma Sci Soc, New Mexico Acad Sci, New Mexico Space Grant Consortium, Profess Aerosp Contractors Assoc C1 ITT FED SERV CORP,VANDENBERG AFB,CA 93437. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-562-3 J9 AIP CONF PROC PY 1996 IS 361 BP 567 EP 577 PG 11 WC Engineering, Aerospace; Physics, Applied SC Engineering; Physics GA BE99C UT WOS:A1996BE99C00098 ER PT S AU Karasopoulos, H Clay, CL AF Karasopoulos, H Clay, CL BE ElGenk, MS TI Transatmospheric vehicle (TAV) research & development at Wright Laboratory's Flight Dynamics Directorate SO SPACE TECHNOLOGY AND APPLICATIONS INTERNATIONAL FORUM (STAIF-96), PTS 1-3: 1ST CONFERENCE ON COMMERCIAL DEVELOPMENT OF SPACE; 1ST CONFERENCE ON NEXT GENERATION LAUNCH SYSTEMS; 2ND SPACECRAFT THERMAL CONTROL SYMPOSIUM; 13TH SYMPOSIUM ON SPACE NUCLEAR POWER AND PROPULSION - FUTURE SPACE AND EARTH SCIENCE MISSIONS - SPECIAL TOPIC; REMOTE SENSING FOR COMMERCIAL, CIVIL AND SCIENCE APPLICATIONS - SPECIAL TOPIC SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Space Technology and Applications International Forum (STAIF -96) CY JAN 07-11, 1996 CL ALBUQUERQUE, NM SP Univ New Mexico, Inst Space & Cucl Power Studies, Def Nucl Agcy, NASA, US DOE, USAF, Amer Inst Aeronaut & Astronaut, Natl Sect, Amer Inst Aeronaut & Astronaut, Local Sect, Amer Inst Chem Engineers, Heat Transfer & Energy Convers Div, Amer Nucl Soc, Trinity Sect, Amer Soc Mech Engineers, Nucl Engn Div, Amer Soc Mech Engineers, Heat Transfer Div, ASTM, Comm E 10 Nucl Technol & Appl, Int Astronaut Federat, IEEE, Microwave Theory & Tech Soc, IEEE, Nucl & Plasma Sci Soc, New Mexico Acad Sci, New Mexico Space Grant Consortium, Profess Aerosp Contractors Assoc C1 USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,AEROMECH DIV,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-562-3 J9 AIP CONF PROC PY 1996 IS 361 BP 695 EP 696 PG 2 WC Engineering, Aerospace; Physics, Applied SC Engineering; Physics GA BE99C UT WOS:A1996BE99C00116 ER PT S AU Gabor, MJ Ries, JC AF Gabor, MJ Ries, JC BE Powell, GE Bishop, RH Lundberg, JB Smith, RH TI A systematic approach to the precision orbit determination of the GEOSAT exact repeat mission utilizing TRANET Doppler data SO SPACEFLIGHT MECHANICS 1996, PTS 1 AND 2 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT AAS/AIAA Spaceflight Mechanics Conference CY FEB 12-15, 1996 CL AUSTIN, TX SP AAS, AIAA C1 USAF,PHILLIPS LAB,ASTRODYNAM DIV,VTA,KIRTLAND AFB,NM 87117. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-414-1 J9 ADV ASTRONAUT SCI PY 1996 VL 93 BP 1149 EP 1168 PG 20 WC Engineering, Aerospace SC Engineering GA BG27W UT WOS:A1996BG27W00070 ER PT S AU Thorne, JD Hall, CD AF Thorne, JD Hall, CD BE Powell, GE Bishop, RH Lundberg, JB Smith, RH TI Optimal continuous thrust orbit transfers SO SPACEFLIGHT MECHANICS 1996, PTS 1 AND 2 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT AAS/AIAA Spaceflight Mechanics Conference CY FEB 12-15, 1996 CL AUSTIN, TX SP AAS, AIAA C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-414-1 J9 ADV ASTRONAUT SCI PY 1996 VL 93 BP 1505 EP 1516 PG 12 WC Engineering, Aerospace SC Engineering GA BG27W UT WOS:A1996BG27W00092 ER PT J AU Forster, NH Jain, VK Trivedi, HK AF Forster, NH Jain, VK Trivedi, HK GP SOC TRIBOLOGISTS & LUBRICAT ENGINEERS TI Rolling contact testing of vapor phase lubricants .1. Material evaluation SO STLE 1996 ANNUAL MEETING, TECHNICAL PREPRINTS LA English DT Proceedings Paper CT Society-of-Tribologists-and-Lubrication-Engineers 51st Annual Meeting CY MAY 19-23, 1996 CL CINCINNATI, OH SP Soc Tribologists & Lubricat Engineers DE vapor phase lubrication; vapor phase lubricants; rolling-element bearings C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 840 BUSSE HIGHWAY, PARK RIDGE, IL 60068-2376 PY 1996 BP 263 EP 274 PG 12 WC Engineering, Mechanical SC Engineering GA BF60F UT WOS:A1996BF60F00030 ER PT J AU Wright, RL AF Wright, RL GP SOC TRIBOLOGISTS & LUBRICAT ENGINEERS TI Formation of the neurotoxin TMPP from TMPE-phosphate formulations SO STLE 1996 ANNUAL MEETING, TECHNICAL PREPRINTS LA English DT Proceedings Paper CT Society-of-Tribologists-and-Lubrication-Engineers 51st Annual Meeting CY MAY 19-23, 1996 CL CINCINNATI, OH SP Soc Tribologists & Lubricat Engineers DE synthetic lubricants; additive effects; toxicological effects; gas chromatography; lubricant analytical techniques C1 USAF,WRIGHT LAB,FUS & LUBRICAT DIV,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 840 BUSSE HIGHWAY, PARK RIDGE, IL 60068-2376 PY 1996 BP 353 EP 360 PG 8 WC Engineering, Mechanical SC Engineering GA BF60F UT WOS:A1996BF60F00040 ER PT B AU Linhard, RE AF Linhard, RE BE Best, ML HughesWilson, J Piontkowsky, AA TI Crisis stability in a Multi-Polar World SO STRATEGIC STABILITY IN THE POST COLD-WAR WORLD AND THE FUTURE OF NUCLEAR DISARMAMENT SE NATO ADVANCED SCIENCE INSTITUTE SERIES, SUB-SERIES 1: DISARMAMENT TECHNOLOGIES LA English DT Proceedings Paper CT NATO Advanced Workshop on Strategic Stability in the Post Cold-War World and the Future of Nuclear Disarmament CY APR 06-10, 1995 CL WASHINGTON, DC SP NATO, Div Sci & Environm Affairs C1 USAF,WASHINGTON,DC. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-3805-7 J9 NATO SCI S 1 DISARM PY 1996 VL 3 BP 85 EP 93 PG 9 WC International Relations SC International Relations GA BJ09A UT WOS:A1996BJ09A00006 ER PT B AU Kim, YW Dimiduk, DM AF Kim, YW Dimiduk, DM BE Nathal, MV Darolia, R Liu, CT Martin, PL Miracle, DB Wagner, R Yamaguchi, M TI Designing gamma TiAl alloys: Fundamentals, strategy and production SO STRUCTURAL INTERMETALLICS 1997 LA English DT Proceedings Paper CT 2nd International Symposium on Structural Intermetallics (ISSI) CY SEP 21-25, 1997 CL SEVEN SPRING MT RESORT, CHAMPION, PA SP Minerals Met & Mat Soc, Struct Mat Div, High Temp Alloys & Titanium Comm, NASA Lewis Res Ctr, Oak Ridge Natl Lab, USAF Off Sci Res, Commonwealth Sci & Ind Res Org, Austr, Rockwell Sci Ctr, ABB Power Generat, Allison Engine Co, Allison Adv Dev, GE, Allied Signal, Plansee Aktiengesell, R & D Inst Met & Composites Future Ind, Tokyo, Japan HO SEVEN SPRING MT RESORT AB The properties of both fine-grained gamma and coarse-grained lamellar microstructures typically produced in engineering gamma TiAl alloys are discussed, along with recent efforts to improve their deficiencies. Empirical improvements made in cast alloys have led to gamma alloys which are a viable materials technology, and to the development of various applications (identified or being implemented) for gas-turbine engines, as well as automotive engines. For wrought alloys, over the last seven years extensive efforts to remove their deficiencies, and to achieve an improved balance of properties, have been made across three interrelated task areas at Wright Laboratory, Materials Directorate. The first effort was directed toward understanding fundamentals, such as phase relations and transformations, microstructure evolution through exploration of controlled processes and/or heat treatments, composition-structure-property relationships, and microalloying effects. The second task, which was later incorporated into the first task, was aimed at improving the balance of properties through designing refined lamellar microstructures and microalloying. The third task was to explore the methods to develop component-specific microstructures and compositions. This paper discusses the progress made from the ongoing efforts. C1 Wright Lab, Mat Directorate, MLLM, Wright Patterson AFB, OH 45433 USA. RP Kim, YW (reprint author), Wright Lab, Mat Directorate, MLLM, Wright Patterson AFB, OH 45433 USA. NR 0 TC 0 Z9 0 U1 1 U2 2 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-375-9 PY 1996 BP 531 EP 543 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Materials Science; Metallurgy & Metallurgical Engineering GA BK32R UT WOS:000071821900058 ER PT B AU Rosenberger, AH Worth, BD Larsen, JM AF Rosenberger, AH Worth, BD Larsen, JM BE Nathal, MV Darolia, R Liu, CT Martin, PL Miracle, DB Wagner, R Yamaguchi, M TI Effects of microstructure, temperature and environment on fatigue crack growth in Ti-46.5Al-3Nb-2Cr-0.2W gamma titanium aluminide SO STRUCTURAL INTERMETALLICS 1997 LA English DT Proceedings Paper CT 2nd International Symposium on Structural Intermetallics (ISSI) CY SEP 21-25, 1997 CL SEVEN SPRING MT RESORT, CHAMPION, PA SP Minerals Met & Mat Soc, Struct Mat Div, High Temp Alloys & Titanium Comm, NASA Lewis Res Ctr, Oak Ridge Natl Lab, USAF Off Sci Res, Commonwealth Sci & Ind Res Org, Austr, Rockwell Sci Ctr, ABB Power Generat, Allison Engine Co, Allison Adv Dev, GE, Allied Signal, Plansee Aktiengesell, R & D Inst Met & Composites Future Ind, Tokyo, Japan HO SEVEN SPRING MT RESORT AB The influence of environment on the fatigue crack growth in a gamma titanium aluminide alloy was examined through a comparison of crack growth behavior in laboratory air and ultra high vacuum (UHV). Specimens of wrought Ti-46.5Al-3Nb-2Cr-0.2W (at %) were tested in duplex, refined lamellar and coarse lamellar microstructures at temperatures ranging from ambient to 800 degrees C. A pronounced environmental effect was observed at all temperatures, with crack growth rates more than an order of magnitude lower in vacuum than in air. The poorest crack growth resistance was observed in air at an intermediate temperature, however in a UHV environment, no anomalous temperature dependence on fatigue crack growth was observed. This temperature effect was shown to be the result of an environmental embrittlement that is mitigated by the increase in ductility at higher temperatures. A careful examination of crack closure levels supported this conclusion. Subtle fractographic differences in crack growth mode were observed in the two environments but were not sufficient to cause the dramatic changes in fatigue crack growth resistance. C1 USAF, Res Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RP Rosenberger, AH (reprint author), USAF, Res Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-375-9 PY 1996 BP 555 EP 561 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Materials Science; Metallurgy & Metallurgical Engineering GA BK32R UT WOS:000071821900060 ER PT B AU Worth, BD Larsen, JM Rosenberger, AH AF Worth, BD Larsen, JM Rosenberger, AH BE Nathal, MV Darolia, R Liu, CT Martin, PL Miracle, DB Wagner, R Yamaguchi, M TI Threshold fatigue crack growth behavior of the gamma titanium aluminide alloy Ti-46.5Al-3Nb-2Cr-0.2W under high cycle fatigue conditions SO STRUCTURAL INTERMETALLICS 1997 LA English DT Proceedings Paper CT 2nd International Symposium on Structural Intermetallics (ISSI) CY SEP 21-25, 1997 CL SEVEN SPRING MT RESORT, CHAMPION, PA SP Minerals Met & Mat Soc, Struct Mat Div, High Temp Alloys & Titanium Comm, NASA Lewis Res Ctr, Oak Ridge Natl Lab, USAF Off Sci Res, Commonwealth Sci & Ind Res Org, Austr, Rockwell Sci Ctr, ABB Power Generat, Allison Engine Co, Allison Adv Dev, GE, Allied Signal, Plansee Aktiengesell, R & D Inst Met & Composites Future Ind, Tokyo, Japan HO SEVEN SPRING MT RESORT AB To date, there is a limited understanding of the mechanics of cyclic damage in gamma TiAl intermetallic alloys. The available studies indicate that the fatigue strength for this class of alloys typically exceeds 80 percent of the material's monotonic yield strength. Such data suggest the possibility of using a safe-life fatigue design at relatively high stresses. However, a safe-life design scheme does not account for the possible existence of intrinsic material defects or service-induced damage, both of which must be addressed in order to ensure reliability in fracture-critical applications. Previous results have shown that the long-crack growth rates in materials of both fully lamellar and duplex microstructures are highly sensitive to the level of applied loading. As a result, it appears likely that a fracture-mechanics-based approach to life prediction must assure that conditions for fatigue crack growth remain below the threshold stress intensity factor range, Delta K-th. The current study examined the smooth and notched high cycle fatigue behavior of representative TiAl-based alloys to develop a better understanding of the events that lead to fatigue crack initiation and growth. The results of the study were used to identify key parameters that should be addressed in order to develop reliable life prediction models for this class of alloys in fracture critical applications in turbine engines. C1 USAF, Res Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RP Worth, BD (reprint author), USAF, Res Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-375-9 PY 1996 BP 563 EP 569 PG 7 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Materials Science; Metallurgy & Metallurgical Engineering GA BK32R UT WOS:000071821900061 ER PT B AU Boehlert, CJ Majumdar, BS Seetharaman, V Miracle, DB Wheeler, R AF Boehlert, CJ Majumdar, BS Seetharaman, V Miracle, DB Wheeler, R BE Nathal, MV Darolia, R Liu, CT Martin, PL Miracle, DB Wagner, R Yamaguchi, M TI Phase evolution, stability, and microstructure-creep relations in an orthorhombic Ti-23Al-27Nb alloy SO STRUCTURAL INTERMETALLICS 1997 LA English DT Proceedings Paper CT 2nd International Symposium on Structural Intermetallics (ISSI) CY SEP 21-25, 1997 CL SEVEN SPRING MT RESORT, CHAMPION, PA SP Minerals Met & Mat Soc, Struct Mat Div, High Temp Alloys & Titanium Comm, NASA Lewis Res Ctr, Oak Ridge Natl Lab, USAF Off Sci Res, Commonwealth Sci & Ind Res Org, Austr, Rockwell Sci Ctr, ABB Power Generat, Allison Engine Co, Allison Adv Dev, GE, Allied Signal, Plansee Aktiengesell, R & D Inst Met & Composites Future Ind, Tokyo, Japan HO SEVEN SPRING MT RESORT AB The phase evolution and creep behavior were studied for an orthorhombic Ti-23Al-27Nb alloy. Monolithic sheet materials were produced through conventional thermomechanical processing techniques comprising nonisothermal forging and pack rolling. Phase evolution studies showed that, depending on the heat-treatment schedule, this alloy may contain several constituent phases including: alpha(2) (ordered hexagonal close-packed DO19 structure), B2 (ordered body-centered-cubic (bcc)), beta (disordered bcc), and O (ordered orthorhombic based on Ti2AlNb). DTA studies indicated that the B2 transus temperature was 1070 degrees C. Heat treatment and TEM studies showed that the alpha(2)+B2 phase field extended between 1010 degrees C and 1070 degrees C. From 875 degrees C to 975 degrees C, a two-phase O+B2, field existed. Sandwiched between these two-phase regimes was a narrow three-phase alpha(2)+B2+O field. Below 875 degrees C an O+beta field existed. All heat treatments at or above 875 degrees C, followed by quenching, resulted in equiaxed microstructures. However, below 875 degrees C, the B2 phase transformed into a mixture of O and bcc phases with lenticular morphologies. Cellular precipitation of O+beta platelets at O/B2 and alpha(2)/B2 grain boundaries occurred depending on solutionizing and aging temperatures. The kinetics of this reaction at 650 degrees C and its effect on creep were recorded. Unaged microstructures, which transformed during the creep experiments, exhibited larger creep strains than longterm aged microstructures. In terms of phase volumes, load did not appear to significantly effect the transformation behavior. Three microstructures were compared in the creep study including: super-transus B2, alpha(2)+B2, and O+B2 solutionized microstructures which were aged in the O+beta region prior to the creep experiments. The measured creep exponents and activation energies suggested that the creep mechanisms are dependent on microstructure and stress. The power-law creep behavior indicated the presence of three regimes for the supertransus microstructure at 650 degrees C. For low applied stresses a Coble creep mechanism was suggested as the creep exponent was close to unity and Qapp = 171 kJ/mol. For intermediate stresses, the creep exponent was two and grain boundary sliding was suggested. For high stresses the stress exponent tended toward 3.7 and dislocation climb was suggested. The sub-transus microstructures contained much smaller grain sizes and based on the deformation behavior and measured creep parameters, grain boundary sliding was considered to be the dominant mechanism. Overall, those microstructures solution treated at higher temperatures prior to aging exhibited larger grain sizes and greater creep resistance. For targeted low stress and intermediate temperature applications, grain size appears to be the dominant microstructural feature influencing the creep behavior of this alloy. C1 USAF, Wright Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. RP Boehlert, CJ (reprint author), USAF, Wright Lab, Mat Directorate, Wright Patterson AFB, OH 45433 USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-375-9 PY 1996 BP 795 EP 804 PG 10 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Materials Science; Metallurgy & Metallurgical Engineering GA BK32R UT WOS:000071821900087 ER PT B AU Thompson, SD See, DW Lykins, CD Sampson, PG AF Thompson, SD See, DW Lykins, CD Sampson, PG BE Gregory, JK Rack, HJ Eylon, D TI Laser shock peening vs shot peening a damage tolerance investigation SO SURFACE PERFORMANCE OF TITANIUM LA English DT Proceedings Paper CT Symposium on Surface Performance of Titanium at the 1996 Fall TMS Meeting CY OCT 06-10, 1996 CL CINCINNATI, OH SP Titanium Comm TMS AB The purpose of this paper is to inform the public on work that the United States Air Force is doing to reduce the occurrence of high cycle fatigue (HCF) failures, that are a direct result from airborne debris or foreign object damage (FOD). Several topics will be discussed including; the High Cycle Fatigue Science and Technology Plan, the benefits gained by utilizing surface treatments, surface treatment techniques (shot peening and laser shock peening), the ramifications of FOD in the turbine engine design process and the results from a competitive study between shot peening (SP) and laser shock peening (LSP). The competition between SP and LSP was established to evaluate the damage tolerance improvements of these processes. Specifically, rating their influence on the fatigue life of foreign object damaged (FOD) turbine engine fan blades was the primary objective of this study. In addition, the postprocessing surface finish and the total amount of deformation imparted by each process was evaluated. C1 USAF, Wright Lab, Air Force Mat Command, Mfg Technol Directorate, Wright Patterson AFB, OH 45433 USA. RP Thompson, SD (reprint author), USAF, Wright Lab, Air Force Mat Command, Mfg Technol Directorate, Wright Patterson AFB, OH 45433 USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-402-X PY 1996 BP 239 EP 251 PG 13 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BM46A UT WOS:000078810700019 ER PT J AU Schertel, ER Pratt, JW Schaefer, SL Valentine, AK McCreary, MR Myerowitz, PD AF Schertel, ER Pratt, JW Schaefer, SL Valentine, AK McCreary, MR Myerowitz, PD TI Effects of acid aspiration-induced lung injury on left ventricular function SO SURGERY LA English DT Article ID CONDUCTANCE CATHETER; STROKE VOLUME; MYELOPEROXIDASE; DYSFUNCTION; PULMONARY; EDEMA; HEART; DOGS AB Background. Acid aspiration-induced acute lung injury (AALI) leads to myocardial leukosequestration and edema in rats and hemodynamic depression in dogs, but the effects of AALI on left ventricular (LV) function have not been carefully studied. Methods. We examined the effects of 0.1 N HCl administration into the lung on LV function, leukosequestration, and edema in pentobarbital-anesthetized, atropinized (n = 8), or autonomically blocked (n = 7) dogs. Saline solution was administered into the lungs of a control group of autonomically blocked dogs (n = 6). LV contractility was assessed by end-systolic elastance (E(ES)) and preload recruitable stroke work (PRSW). Active relaxation was assessed by the time constant of LV pressure decline (tau). Results. AALI resulted in significant (p < 0.05) decreased in mean arterial pressure and cardiac output and increases in pulmonary artery pressure and systemic vascular resistance in atropinized and autonomically blocked dogs but not in saline control group. In atropinized dogs tau did not change after injury, but E(ES) and PRSW were increased significantly at 2 or 3 hours after injury, despite significant myeloperoxidase activity and extravascular fluid wet-dry weight ratios. E(ES), PRSW, and tau did not change in the autonomically blocked dogs in response to AALI or in the saline control group. Conclusions. We concluded that AALI results in a baroreflex mediated enhancement of LV contractility in dogs, despite mild myocardial leukosequestration and edema formation. C1 WILFORD HALL USAF MED CTR,DEPT SURG,LACKLAND AFB,TX. RP Schertel, ER (reprint author), OHIO STATE UNIV,DEPT SURG,DIV THORAC & CARDIOVASC SURG,N-816 DOAN HALL,410 10TH AVE,COLUMBUS,OH 43210, USA. NR 27 TC 9 Z9 9 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0039-6060 J9 SURGERY JI Surgery PD JAN PY 1996 VL 119 IS 1 BP 81 EP 88 DI 10.1016/S0039-6060(96)80218-2 PG 8 WC Surgery SC Surgery GA TR193 UT WOS:A1996TR19300014 PM 8560391 ER PT J AU Coffey, M McKellar, BR Reinhardt, BA Nijakowski, T Feld, WA AF Coffey, M McKellar, BR Reinhardt, BA Nijakowski, T Feld, WA TI A facile synthesis of 3,4-dialkoxythiophenes SO SYNTHETIC COMMUNICATIONS LA English DT Article ID POLYTHIOPHENES AB Dialkylation of diethyl 3,4-dihydroxythiophenedicarboxylate followed by ester hydrolysis and acid decarboxylation provides a general route to 3,4-dialkoxythiophenes. C1 WRIGHT STATE UNIV,DEPT CHEM,DAYTON,OH 45435. WRIGHT LAB,MAT DIRECTORATE,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 9 TC 19 Z9 23 U1 0 U2 4 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0039-7911 J9 SYNTHETIC COMMUN JI Synth. Commun. PY 1996 VL 26 IS 11 BP 2205 EP 2212 DI 10.1080/00397919608003580 PG 8 WC Chemistry, Organic SC Chemistry GA UG663 UT WOS:A1996UG66300018 ER PT B AU Lowry, HS Tripp, DM Nicholson, RA Fugerer, RH Steely, SL Holt, LL AF Lowry, HS Tripp, DM Nicholson, RA Fugerer, RH Steely, SL Holt, LL BE Watkins, WR Clement, D TI Initial test efforts using AEDC's Focal Plane Array Test Chamber (FPATC) SO TARGETS AND BACKGROUNDS: CHARACTERIZATION AND REPRESENTATION II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Targets and Backgrounds - Characterization and Representation II CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE acousto-optic; scene projection; infrared; radiometric; focal plane arrays; closed-loop; lens C1 SVERDRUP TECHNOL INC,ARNOLD AFB,TN. NR 0 TC 2 Z9 2 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2123-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2742 BP 38 EP 49 DI 10.1117/12.243013 PG 12 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BG12B UT WOS:A1996BG12B00004 ER PT B AU Fugerer, RH Hervig, DJ Holt, LL AF Fugerer, RH Hervig, DJ Holt, LL BE Watkins, WR Clement, D TI Hardware and software developments for a closed-loop infrared mission simulation test capability SO TARGETS AND BACKGROUNDS: CHARACTERIZATION AND REPRESENTATION II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Targets and Backgrounds - Characterization and Representation II CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE scene; infrared; FPA; sensor; analog; digital; RF; acousto-optic deflector; digital synthesizer; frame C1 SVERDRUP TECHNOL INC,AEDC OPERAT,ARNOLD AFB,TN 37889. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2123-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2742 BP 69 EP 81 DI 10.1117/12.243029 PG 13 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BG12B UT WOS:A1996BG12B00007 ER PT B AU McCamey, KJ Marko, R Garvin, L Peli, T AF McCamey, KJ Marko, R Garvin, L Peli, T BE Watkins, WR Clement, D TI Detection in clutter enhancement SO TARGETS AND BACKGROUNDS: CHARACTERIZATION AND REPRESENTATION II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Targets and Backgrounds - Characterization and Representation II CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 USAF,WRIGHT LAB,WPAFB,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 3 Z9 3 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2123-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2742 BP 225 EP 235 DI 10.1117/12.243000 PG 11 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BG12B UT WOS:A1996BG12B00022 ER PT B AU Thompson, RA Krawczyk, WJ Kircher, JR Trolier, JW AF Thompson, RA Krawczyk, WJ Kircher, JR Trolier, JW BE Murrer, RL TI Real-time implementation of structural and aero-optical effects for hypervelocity missiles SO TECHNOLOGIES FOR SYNTHETIC ENVIRONMENTS: HARDWARE-IN-THE-LOOP TESTING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Technologies for Synthetic Environments - Hardware-in-the-Loop Testing CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE KHILS; Kinetic Energy Weapon; KEW; hardware-in-the-loop; hypersonic; scene generation; testing modeling and simulation; real-time simulation; structural response; aero-optics C1 USAF,WRIGHT LAB,ARMAMENT DIRECTORATE,ADV GUIDANCE DIV,MNGI,WL,EGLIN AFB,FL 32542. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2122-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2741 BP 278 EP 289 DI 10.1117/12.241106 PG 12 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BF87F UT WOS:A1996BF87F00026 ER PT B AU Steely, SL Lowry, HS Fugerer, RH AF Steely, SL Lowry, HS Fugerer, RH BE Murrer, RL TI Laser-based direct write scene generation methods for closed-loop focal-plane-array diagnostics SO TECHNOLOGIES FOR SYNTHETIC ENVIRONMENTS: HARDWARE-IN-THE-LOOP TESTING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Technologies for Synthetic Environments - Hardware-in-the-Loop Testing CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE anisoplanatic optics; closed-loop; direct-write scene generation; fidelity; focal-plane-array testing; laser stimulation; performance; real-time; sensor diagnostics C1 SVERDRUP TECHNOL INC,AEDC GRP,ARNOLD AFB,TN 37389. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2122-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2741 BP 290 EP 301 DI 10.1117/12.241107 PG 12 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BF87F UT WOS:A1996BF87F00027 ER PT S AU Meink, TE Huybrechts, S AF Meink, TE Huybrechts, S BE Hoggatt, JT Falcone, A Nelson, KM Hill, SG TI Hybrid tooling for Advanced Grid Stiffened (AGS) structures SO TECHNOLOGY TRANSFER IN A GLOBAL COMMUNITY SE INTERNATIONAL SAMPE TECHNICAL CONFERENCE SERIES LA English DT Proceedings Paper CT 28th International SAMPE Technical Conference on Technology Transfer in a Global Community CY NOV 04-07, 1996 CL SEATTLE, WA SP Soc Adv Mat & Proc Engn DE tooling; manufacturing/fabrication/processing; thermal analysis AB Lattices of rigidly connected ribs, known as Advanced Grid Stiffened (AGS) structures, have many advantages over traditional construction methods, which use panels, sandwich cores and/or expensive frameworks. A newly developed Hybrid Tooling process has been developed and researched in order to produce high quality AGS structures at low cost. This Hybrid Tooling concept involves a combination of hard and soft tooling to control part compaction, dimensional stability, and allow for automation. The tooling is comprised of a stiff, dimensionally stable Base Tool, overlaid with a high coefficient of thermal expansion Expansion Tool providing part compaction. Aspects of this tooling, specifically as they relate to construction of AGS structures, have been investigated. Flat, cylindrical and conical sections have been fabricated in order to optimize tooling parameters. An analytical thermal model has been developed to predict part consolidation. This novel tooling concept is presented along with experimental data, analysis of accompanying parameters, behavior and capability. RP Meink, TE (reprint author), USAF,PHILLIPS LAB,STRUCT & CONTROLS DIV,KIRTLAND AFB,NM 87117, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 SN 0892-2624 BN 0-938994-76-X J9 INT SAMPE TECH CONF PY 1996 VL 28 BP 542 EP 551 PG 2 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BH03N UT WOS:A1996BH03N00049 ER PT S AU Curliss, DB AF Curliss, DB BE Hoggatt, JT Falcone, A Nelson, KM Hill, SG TI Hygrothermal studies on fluorinated polyimides - Model compound studies of cure and degradation SO TECHNOLOGY TRANSFER IN A GLOBAL COMMUNITY SE INTERNATIONAL SAMPE TECHNICAL CONFERENCE SERIES LA English DT Proceedings Paper CT 28th International SAMPE Technical Conference on Technology Transfer in a Global Community CY NOV 04-07, 1996 CL SEATTLE, WA SP Soc Adv Mat & Proc Engn DE solid state nuclear magnetic resonance (NMR); polyimide; degradation AB We have used solid state nuclear magnetic resonance (NMR) spectroscopic techniques to study the network formation reactions and degradation reactions in service environments for a number of high performance imide-containing polymers. N-15 spectroscopy has proven to be most useful in the studies of imide polymers since the reactions of interest generally involve changes in the N-15 NMR spectrum. The techniques allows us to clearly identify and quantify reactions of the polymer systems. For example, we have investigated the curing, post-curing, and hydrolytic degradation of the polyimide resin AFR700B, a normally intractable material by other techniques, using N-15 NMR spectroscopy and can clearly observe reactive species in both the cure reactions and in the hydrolysis of a fully cured and post-cured resin. To further understand hydrolytic susceptibility exhibited by this class of polymers a variety of model compounds simulating the reaction products in the addition polyimide were prepared. NMR spectroscopy was performed on these model compounds after being subjected to simulated service environments in order to gain insight into the mechanisms and kinetics of the hydrolytically reactive sites in these classes of polymers. RP Curliss, DB (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 SN 0892-2624 BN 0-938994-76-X J9 INT SAMPE TECH CONF PY 1996 VL 28 BP 790 EP 796 PG 5 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BH03N UT WOS:A1996BH03N00073 ER PT B AU Allred, LG Howard, TR AF Allred, LG Howard, TR BE Burleigh, DD Spicer, JWM TI On the fly neural network construction for repairing F-16 flight control panel using thermal imaging SO THERMOSENSE XVIII: AN INTERNATIONAL CONFERENCE ON THERMAL SENSING AND IMAGING DIAGNOSTIC APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT International Conference on Thermal Sensing and Imaging Diagnostic Applications - Thermosense XVIII CY APR 10-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 ODGEN AIR LOGIST CTR,SOFTWARE ENGN DIV TIS,HILL AFB,UT. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2147-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2766 BP 284 EP & DI 10.1117/12.235386 PG 12 WC Construction & Building Technology; Engineering, Multidisciplinary; Instruments & Instrumentation; Optics SC Construction & Building Technology; Engineering; Instruments & Instrumentation; Optics GA BF31V UT WOS:A1996BF31V00032 ER PT S AU Viereck, RA Murad, E Lai, ST Knecht, DJ Pike, CP Gardner, JA Broadfoot, AL Anderson, ER McNeil, WJ AF Viereck, RA Murad, E Lai, ST Knecht, DJ Pike, CP Gardner, JA Broadfoot, AL Anderson, ER McNeil, WJ BE Rottger, J Wickwar, VB TI Mg+ and other metallic emissions observed in the thermosphere SO THERMOSPHERE-IONOSPHERE-MIDDLE ATMOSPHERE COUPLING AND DYNAMICS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Article; Proceedings Paper CT C1.2 Symposium of COSPAR Scientific Commission C on Thermosphere-Ionosphere-Middle Atmosphere Coupling and Dynamics, at the 30th COSPAR Scientific Assembly CY JUL 11-21, 1994 CL HAMBURG, GERMANY SP COSPAR ID EARTHS UPPER-ATMOSPHERE; LIDAR OBSERVATIONS; F-REGION; IONOSPHERE; MESOSPHERE; DENSITIES; IONS AB Limb observations of UV dayglow emissions from 80 to 300 km tangent heights were made in December, 1992, using the GLO instrument on-board STS-53, which was at 330 km altitude and had an orbit inclination of 57 degrees. The orbit placed the shuttle near the terminator for the entire mission, resulting in a unique set of observations. GLO consisted of 12 imagers and 9 spectrographs on an Az/EI gimbal system. Data was obtained over 6 days of the mission. Emissions from Mg+ and Ca+ were observed, as were emissions from the neutral metals Mg and Na. The ultimate source of the metals is meteor ablation; however, the emission spatial distribution is controlled by upper mesospheric and thermospheric winds and, in the case of the ions, by the electromagnetic fields of the ionosphere. Mg+ showed the brightest metal emission, and was observed near the poles and around the geomagnetic equator near sunset. The polar emissions were short-lived and intense, while the equatorial emissions were more continuous, with luminous patches observable over the period of several orbits. The instrumentation will be described, as will spatialand temporal variations of the metal emissions with emphasis on the metal ions. A numerical model is being developed to simulate the distribution and brightness of the ions in the near-equatorial region. C1 PHOTOMETR INC, WOBURN, MA 01801 USA. RADEX INC, BEDFORD, MA 01730 USA. UNIV ARIZONA, LUNAR & PLANETARY OBSERV, TUCSON, AZ 85721 USA. RP Viereck, RA (reprint author), USAF, PHILLIPS LAB, SPACECRAFT INTERACT BRANCH, WSSI, 29 RANDOLPH RD, BEDFORD, MA 01731 USA. NR 30 TC 5 Z9 5 U1 1 U2 7 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042667-0 J9 ADV SPACE RES-SERIES PY 1996 VL 18 IS 3 BP 61 EP 64 DI 10.1016/0273-1177(95)00839-7 PG 4 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Geology; Meteorology & Atmospheric Sciences GA BE40X UT WOS:A1995BE40X00013 ER PT B AU Ianni, J Clark, K Blaney, L Hale, R Ziolek, S Bridgman, T AF Ianni, J Clark, K Blaney, L Hale, R Ziolek, S Bridgman, T GP IEEE TI Maintenance hazard simulation: A study of contributing factors SO THIRD ANNUAL SYMPOSIUM ON HUMAN INTERACTION WITH COMPLEX SYSTEMS - HICS '96, PROCEEDINGS LA English DT Proceedings Paper CT 3rd Annual Symposium on Human Interaction with Complex Systems (HICS 96) CY AUG 25-28, 1996 CL DAYTON, OH SP IEEE, Comp Soc, IEEE, Comp Soc, Tech Comm Multimedia Comput, N Carolina A&T State Univ, Wright State Univ C1 USAF,ARMSTRONG LAB,WRIGHT PATTERSON AFB,OH. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7493-8 PY 1996 BP 154 EP 161 DI 10.1109/HUICS.1996.549510 PG 8 WC Computer Science, Cybernetics SC Computer Science GA BG17B UT WOS:A1996BG17B00025 ER PT B AU Altschuler, BR Oliver, WR Altschuler, MD AF Altschuler, BR Oliver, WR Altschuler, MD BE Gerson, DJ TI Rapid 3-D video/laser sensing and digital archiving with immediate on-scene feedback for 3-D crime scene mass disaster data collection and reconstruction SO TOOLS AND TECHNIQUES FOR MODELING AND SIMULATION, 24TH AIPR WORKSHOP SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 24th AIPR Workshop on Tools and Techniques for Modeling and Simulation CY OCT 11-13, 1995 CL WASHINGTON, DC SP Soc Photo Opt Instrumentat Engineers, AIPR Execut Comm DE robot vision; robotics; sensors; lasers; mapping; 3D; virtual reality C1 USAF,DENT CORPS,FT GEORGE G MEADE,MD 20755. NR 0 TC 0 Z9 0 U1 1 U2 4 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2018-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2645 BP 32 EP 38 DI 10.1117/12.233069 PG 7 WC Optics SC Optics GA BF18T UT WOS:A1996BF18T00003 ER PT J AU Chao, KK Saba, CS Centers, PW AF Chao, KK Saba, CS Centers, PW TI Effects of lubricant borne solid debris in rolling surface contacts SO TRIBOLOGY TRANSACTIONS LA English DT Article; Proceedings Paper CT 50th Annual Meeting of the Society-of-Tribologists-and-Lubrication-Engineers CY MAY 14-19, 1995 CL CHICAGO, IL SP Soc Tribologists & Lubricat Engineers ID BEARINGS; LIFE AB The role of particle morphology, hardness and toughness in the rolling surface fatigue and wear have been investigated using a thrust bearing in an accelerated laboratory bench test. Ceramic, steel and metal powders of known physical properties with sizes of 10-20 micrometers were used as contaminants in a 3-cSt ester fluid. Initial results suggest that ceramic particles with high hardness but low, toughness induce the most damage in metallic rolling contacts. Emphasis was placed on analysis of the functional relationships among the various Parameters. C1 USAF,WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP Chao, KK (reprint author), UNIV DAYTON,RES INST,DAYTON,OH 45469, USA. NR 31 TC 24 Z9 25 U1 0 U2 1 PU SOC TRIBOLOGISTS & LUBRICATION ENGINEERS PI PARK RIDGE PA 838 BUSSE HIGHWAY, PARK RIDGE, IL 60068 SN 0569-8197 J9 TRIBOL T JI Tribol. Trans. PD JAN PY 1996 VL 39 IS 1 BP 13 EP 22 DI 10.1080/10402009608983497 PG 10 WC Engineering, Mechanical SC Engineering GA TQ202 UT WOS:A1996TQ20200002 ER PT B AU Bowie, TG AF Bowie, TG BE Slabey, RM TI Reconciling Vietnam: Tim O'Brien's narrative journey SO UNITED STATES AND VIETNAM FROM WAR TO PEACE: PAPERS FROM AN INTERDISCIPLINARY CONFERENCE ON RECONCILIATION LA English DT Proceedings Paper CT Notre Dame Conference on the United States and Vietnam - From War to Peace CY DEC 02-04, 1993 CL NOTRE DAME, IN SP Paul M & Barbara Henkels Endowment, Coll Arts & Lett, Kellogg Inst Int Studies, Kroc Inst Int Peace Studies, Ctr Study Contemporary Soc, Notre Dame Student Union Board, Indiana Humanities Council C1 USAF ACAD,COLORADO SPRINGS,CO 80840. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MCFARLAND & CO INC PUBL PI JEFFERSON PA BOX 611, JEFFERSON, NC 28640 BN 0-7864-0227-X PY 1996 BP 184 EP 197 PG 14 WC Area Studies; Political Science SC Area Studies; Government & Law GA BG96M UT WOS:A1996BG96M00021 ER PT J AU Cespedes, RD Lynch, SC Grider, DJ AF Cespedes, RD Lynch, SC Grider, DJ TI Pseudosarcomatous fibromyxoid tumor of the prostate - A case report with review of the literature SO UROLOGIA INTERNATIONALIS LA English DT Article DE prostate; prostatic pseudotumor; sarcoma; leiomyoma; spindle cell nodule, postoperative ID URINARY-BLADDER AB A previously healthy 42-year-old white male presented with urinary obstruction, Radiographic evaluation revealed a 4-cm prostatic mass extending into the bladder. Transrectal biopsies revealed a sarcomatoid histology with atypical spindle cells suspicious for possible sarcoma, A transurethral resection of the prostate was performed revealing a benign fibromyxoid lesion with spindle cell proliferation, Postoperatively, the patient voided normally with no evidence of recurrence on follow-up of over 1 year. The clinical presentation and histologic features are consistent with pseudosarcomatous fibromyxoid tumor, a rare but benign lesion which has previously been mistaken for a malignant prostatic sarcoma. It is important for the urologist to recognize this benign process so that radical procedures are not performed. RP Cespedes, RD (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL PSSU,2200 BERGQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 14 TC 9 Z9 9 U1 0 U2 0 PU KARGER PI BASEL PA ALLSCHWILERSTRASSE 10, CH-4009 BASEL, SWITZERLAND SN 0042-1138 J9 UROL INT JI Urol.Int. PY 1996 VL 57 IS 4 BP 249 EP 251 PG 3 WC Urology & Nephrology SC Urology & Nephrology GA VW667 UT WOS:A1996VW66700013 PM 8961498 ER PT B AU Krabacher, WE AF Krabacher, WE BE Bohm, F Willumeit, HP TI A comparison of the Moreland and von Schlippe-Dietrich landing gear tire shimmy models SO VEHICLE SYSTEM DYNAMICS, VOL 17, SUPPLEMENT: TYRE MODELS FOR VEHICLE DYNAMIC ANALYSIS LA English DT Proceedings Paper CT 2nd International Colloquium on Tyre Models for Vehicle Dynamic Analysis CY FEB 20-21, 1997 CL TECH UNIV BERLIN, BERLIN, GERMANY SP Int Assoc Vehicle Syst Dynam, Daimler Benz AG, Stuttgart HO TECH UNIV BERLIN RP Krabacher, WE (reprint author), USAF,WRIGHT LAB,FIVM,LANDING GEAR DEV FACIL,BLDG 31,1981 5TH ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SWETS AND ZEITLINGER B V PI LISSE PA HEEREWEG 347B, 2160 LISSE, NETHERLANDS BN 90-265-1488-3 PY 1996 BP 335 EP 338 PG 4 WC Transportation SC Transportation GA BH35W UT WOS:A1996BH35W00027 ER PT B AU McCandless, DA Rogers, SK Hoffmeister, JW Ruck, DW Raines, RA Suter, BW AF McCandless, DA Rogers, SK Hoffmeister, JW Ruck, DW Raines, RA Suter, BW BE Szu, HH TI Wavelet detection of clustered microcalcifications SO WAVELET APPLICATIONS III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Wavelet Applications III Conference CY APR 08-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE wavelets; pattern recognition; breast cancer; medical imaging; model based vision; microcalcifications C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2143-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2762 BP 388 EP 399 DI 10.1117/12.236012 PG 12 WC Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Remote Sensing; Optics SC Computer Science; Engineering; Remote Sensing; Optics GA BF34Y UT WOS:A1996BF34Y00039 ER PT B AU Huang, Y Suter, B AF Huang, Y Suter, B BE Unser, MA Aldroubi, A Laine, AF TI On a nonlinear operator related to refinable function vectors SO WAVELET APPLICATIONS IN SIGNAL AND IMAGE PROCESSING IV, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 4th Conference on Wavelet Applications in Signal and Image Processing CY AUG 06-09, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE multiresolution analysis; refinable function vectors; wavelets C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2213-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2825 BP 77 EP 86 DI 10.1117/12.255290 PN 1-2 PG 10 WC Optics SC Optics GA BG61S UT WOS:A1996BG61S00008 ER PT B AU Widnall, SE AF Widnall, SE BE Poulos, PN TI Women in the military - A perspective from the Air Force SO WOMAN'S WAR TOO: US WOMEN IN THE MILITARY IN WORLD WAR II LA English DT Proceedings Paper CT Conference on a Womans War Too - US Women in the Military in World War II CY MAR 03-04, 1995 CL WASHINGTON, D.C. SP Natl Archives & Records Adm C1 USAF, Washington, DC 20330 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU NATIONAL ARCHIVES & RECORDS ADMINISTRATION PI WASHINGTON PA 7TH ST & PENN AVE NW, WASHINGTON, DC 20408 USA BN 1-880875-09-8 PY 1996 BP 7 EP 12 PG 6 WC History SC History GA BL82E UT WOS:000076830700001 ER PT J AU Bletzinger, P Ganguly, BN AF Bletzinger, P Ganguly, BN TI High fractional dissociation efficiency in H-2 and H-2-N-2 gas mixtures in a helical resonator discharge SO CHEMICAL PHYSICS LETTERS LA English DT Article ID VIBRATIONAL KINETICS; ELECTRON; MOLECULES; NITROGEN AB High fractional dissociation of H-2 in a helical resonator discharge, operated in inductive mode, has been measured using two-photon allowed laser induced fluorescence of H atom in H-2 and %H-2-%N-2 gas mixtures. Absolute H atom density measurements yield 11% dissociation efficiency in H-2 at 1 Torr. The fractional dissociation efficiency of H-2 was found to increase (approaching 100%) with an increase in %N-2 in H-2-N-2 gas mixtures leading to a nearly constant H atom density over a wide range of %H-2-%N-2 gas compositions. RP Bletzinger, P (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 15 TC 14 Z9 14 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0009-2614 J9 CHEM PHYS LETT JI Chem. Phys. Lett. PD DEC 29 PY 1995 VL 247 IS 4-6 BP 584 EP 588 DI 10.1016/0009-2614(95)01250-8 PG 5 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA TN291 UT WOS:A1995TN29100042 ER PT J AU Thompson, EW AF Thompson, EW TI English as a second language SO HOSPITALS & HEALTH NETWORKS LA English DT Letter RP Thompson, EW (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER HOSPITAL PUBL INC PI CHICAGO PA 211 E CHICAGO AVE, SUITE 700, CHICAGO, IL 60611 SN 1068-8838 J9 HOSP HEALTH NETWORK JI Hosp. Health Netw. PD DEC 20 PY 1995 VL 69 IS 24 BP 10 EP 10 PG 1 WC Health Policy & Services SC Health Care Sciences & Services GA TN457 UT WOS:A1995TN45700005 ER PT J AU Kung, P Zhang, X Walker, D Saxler, A Piotrowski, J Rogalski, A Razeghi, M AF Kung, P Zhang, X Walker, D Saxler, A Piotrowski, J Rogalski, A Razeghi, M TI Kinetics of photoconductivity in n-type GaN photodetector SO APPLIED PHYSICS LETTERS LA English DT Article AB High-quality ultraviolet photoconductive detectors have been fabricated using GaN layers grown by low-pressure metalorganic chemical vapor deposition on (11 . 0) sapphire substrates. The spectral responsivity remained nearly constant for wavelengths from 200 to 365 nm and dropped sharply by almost three orders of magnitude for wavelengths longer than 365 nm. The kinetics of the photoconductivity have been studied by the measurements of the frequency-dependent photoresponse and photoconductivity decay. Strongly sublinear response and excitation-dependent response time have been observed even at relatively low excitation levels. This can be attributed to redistribution of the charge carriers with increased excitation level. (C) 1995 American Institute of Physics. C1 WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. RP NORTHWESTERN UNIV, DEPT ELECT ENGN & COMP SCI, CTR QUANTUM DEVICES, EVANSTON, IL 60208 USA. RI Razeghi, Manijeh/B-7265-2009; Rogalski, Antoni/H-8073-2012 NR 15 TC 69 Z9 69 U1 0 U2 5 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0003-6951 EI 1077-3118 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 18 PY 1995 VL 67 IS 25 BP 3792 EP 3794 DI 10.1063/1.115385 PG 3 WC Physics, Applied SC Physics GA TK759 UT WOS:A1995TK75900041 ER PT J AU Klette, KL DeCoster, MA Moreton, JE Tortella, FC AF Klette, KL DeCoster, MA Moreton, JE Tortella, FC TI Role of calcium in sigma-mediated neuroprotection in rat primary cortical neurons SO BRAIN RESEARCH LA English DT Article DE glutamate; intracellular calcium; neuronal culture; neuroprotection; sigma ligand; confocal microscopy ID HIPPOCAMPAL PYRAMIDAL NEURONS; GLOBAL BRAIN ISCHEMIA; GUINEA-PIG BRAIN; DORSAL HIPPOCAMPUS; BINDING-SITES; DEXTROMETHORPHAN; GLUTAMATE; LIGANDS; NEUROTOXICITY; RECEPTOR AB Since unique calcium dynamics have been reported for toxic (40-80 M) and non-toxic (5-10 mu M) concentrations of glutamate, we evaluated the effect of neuroprotective sigma ligands on glutamate and potassium chloride (KCl)-stimulated changes in [Ca2+](i) using 12-15 day old primary rat neuronal cortical cultures. In approximately 80% of the neurons tested, 80 mu M glutamate caused a sustained calcium flux previously shown to be associated with neurotoxicity. The majority of sigma ligands that were evaluated altered glutamate-induced calcium flux. For example, the primary effect of maximally neuroprotective concentrations of the sigma ligands dextromethorphan, (+)-pentazocine, (+)-cyclazocine, (+)-SKF 10047, carbetapentane and haloperidol was a shift from a sustained, to either a biphasic or a monophasic transient calcium response indicative of neuroprotection. (+)-3-PPP, previously shown not to be neuroprotective in this model system, failed to alter glutamate-induced calcium flux. In contrast to glutamate, KCl (50 mM) produced changes in [Ca2+](i) which were not neurotoxic to the neurons as measured by LDH release. The primary response observed in 59% of the neurons treated with 50 mM KCI alone was an initial spike in [Ca2+](i) which abruptly declined then plateaued above basal levels throughout the 12 min of analysis (modified sustained response). The highly selective sigma ligands produced a shift from the modified sustained response to a monophasic transient calcium response. Again, (+)-3-PPP had no effect on KCl-induced calcium dynamics. Of the PCP-related sigma ligands only (+)-SKF-10047 consistently attenuated the KCl-induced calcium flux. Collectively, these results indicate that modulation of [Ca2+](i) through receptor and voltage-gated calcium channels contributes significantly to sigma mediated neuroprotection. C1 LOUISIANA STATE UNIV,MED CTR,CTR NEUROSCI,NEW ORLEANS,LA 70112. WALTER REED ARMY INST,DEPT MED NEUROSCI,DIV NEUROPSYCHIAT,WASHINGTON,DC 20307. UNIV MARYLAND,SCH PHARM,BALTIMORE,MD 21201. USAF,INST PATHOL,DIV FORENS TOXICOL,WASHINGTON,DC 20307. NR 28 TC 41 Z9 42 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0006-8993 J9 BRAIN RES JI Brain Res. PD DEC 15 PY 1995 VL 704 IS 1 BP 31 EP 41 DI 10.1016/0006-8993(95)01103-X PG 11 WC Neurosciences SC Neurosciences & Neurology GA TM242 UT WOS:A1995TM24200005 PM 8750959 ER PT J AU Khurgin, JB Sun, G Friedman, LR Soref, RA AF Khurgin, JB Sun, G Friedman, LR Soref, RA TI Comparative analysis of optically pumped intersubband lasers and intersubband Raman oscillators SO JOURNAL OF APPLIED PHYSICS LA English DT Note ID SCATTERING AB A new tunable source of the far-infrared radiation based on intersubband electronic Raman scattering in semiconductor quantum wells is proposed. The gain and threshold of the proposed Raman oscillator are estimated and compared with the intersubband laser. (C) 1995 American Institute of Physics. C1 UNIV MASSACHUSETTS,DEPT PHYS,BOSTON,MA 02125. USAF,ROME LAB,BEDFORD,MA 01731. RP Khurgin, JB (reprint author), JOHNS HOPKINS UNIV,DEPT ELECT & COMP ENGN,BALTIMORE,MD 21218, USA. RI khurgin, Jacob/A-3278-2010 NR 8 TC 39 Z9 39 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 15 PY 1995 VL 78 IS 12 BP 7398 EP 7400 DI 10.1063/1.360391 PG 3 WC Physics, Applied SC Physics GA TK562 UT WOS:A1995TK56200078 ER PT J AU Asimellis, G Khoury, J Kane, J Woods, C AF Asimellis, G Khoury, J Kane, J Woods, C TI Two-port photorefractive joint-transform correlator SO OPTICS LETTERS LA English DT Article AB We present what is to our knowledge the first quantitative analysis of the dual optimality that can be achieved in the all-optical two-port photorefractive joint-transform correlator. We determine the operating region where these ports have complementary performance: the first port performs well for non-Gaussian clutter noise, and the second port is optimal for additive Gaussian noise. Dual optimality is achieved without the performance compromise of the optimal trade-off filter approach. (C) 1995 Optical Society of America C1 USAF,ROME LAB,BEDFORD,MA 01731. RP Asimellis, G (reprint author), TUFTS UNIV,CTR ELECTROOPT TECHNOL,MEDFORD,MA 02155, USA. NR 11 TC 5 Z9 6 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD DEC 15 PY 1995 VL 20 IS 24 BP 2517 EP 2519 DI 10.1364/OL.20.002517 PG 3 WC Optics SC Optics GA TN091 UT WOS:A1995TN09100025 PM 19865271 ER PT J AU GUNDEL, DB MAJUMDAR, BS MIRACLE, DB AF GUNDEL, DB MAJUMDAR, BS MIRACLE, DB TI EVALUATION OF THE TRANSVERSE RESPONSE OF FIBER-REINFORCED COMPOSITES USING A CROSS-SHAPED SAMPLE GEOMETRY SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID METAL-MATRIX COMPOSITES; MICROSTRUCTURE C1 UNIVERSAL ENERGY SYST INC,DAYTON,OH 45432. USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP GUNDEL, DB (reprint author), SYSTRAN CORP,4126 LINDEN AVE,DAYTON,OH 45432, USA. NR 22 TC 52 Z9 53 U1 3 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD DEC 15 PY 1995 VL 33 IS 12 BP 2057 EP 2065 DI 10.1016/0956-716X(95)00459-9 PG 9 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA TE964 UT WOS:A1995TE96400028 ER PT J AU RANON, PM DAJANI, I KESTER, JJ ALLEY, TG AF RANON, PM DAJANI, I KESTER, JJ ALLEY, TG TI ALL-OPTICAL PROGRAMMABLE AND GATE IMPLEMENTATION IN A GERMANIUM-DOPED SILICA PLANAR WAVE-GUIDE SO APPLIED PHYSICS LETTERS LA English DT Article ID GENERATION; FIBERS AB We report the results of an all-optical programmable AND logic gate. This gate consists of a germanium-doped silica planar waveguide, a laser, and the means of coupling two fundamental frequency beams-into different guiding modes of the waveguide along with a second harmonic beam coupled into one guiding mode. These waves interfere in the film generating a set of semipermanent second-order susceptibility gratings which give rise to film-generated second harmonic light. By the application of the appropriate optical programming sequence to the waveguide, the film-generated second harmonic light was made to behave as an output of a logic AND gate. The fundamental and second harmonic light were sent into the waveguide during the programming sequence, but only the fundamental light was injected to probe the logic gate to produce an output. The measured signal-to-noise ratio was 17 dB. (C) 1995 American Institute of Physics. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. UNIV NEW MEXICO,DEPT PHYS & ASTRON,ALBUQUERQUE,NM 87131. RP RANON, PM (reprint author), USAF,CTR TECH APPLICAT,TXO,1030 S HIGHWAY A1A,PATRICK AFB,FL 32925, USA. NR 12 TC 6 Z9 6 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 11 PY 1995 VL 67 IS 24 BP 3532 EP 3534 DI 10.1063/1.115564 PG 3 WC Physics, Applied SC Physics GA TJ304 UT WOS:A1995TJ30400004 ER PT J AU SZMULOWICZ, F BROWN, GJ AF SZMULOWICZ, F BROWN, GJ TI CALCULATION OF RESONANT ABSORPTION AND PHOTORESPONSE MEASUREMENT IN P-TYPE GAAS/ALGAAS QUANTUM-WELLS - REPLY SO APPLIED PHYSICS LETTERS LA English DT Note ID INFRARED PHOTODETECTORS RP SZMULOWICZ, F (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45466, USA. NR 17 TC 0 Z9 0 U1 1 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 11 PY 1995 VL 67 IS 24 BP 3655 EP 3656 DI 10.1063/1.115350 PG 2 WC Physics, Applied SC Physics GA TJ304 UT WOS:A1995TJ30400047 ER PT J AU Mason, PA AF Mason, PA TI Establishing an imaging system to support a microscopy laboratory SO MATHEMATICS AND COMPUTERS IN SIMULATION LA English DT Article; Proceedings Paper CT Joint CHPC/IMACS Workshop on Computational Issues in Neurosciences CY MAY 14-15, 1993 CL UNIV TEXAS, CTR HIGH PERFORMANCE COMP, AUSTIN, TX SP Univ Texas, CHPC, IMACS, Univ Texas, Dept Appl Res & Dev HO UNIV TEXAS, CTR HIGH PERFORMANCE COMP DE computer; gopher; graphics; mosaic; network; NTSC; RGB; video AB When establishing an imaging system to support a microscopy laboratory, it is important to seek information from individuals who have knowledge of video, audio and computer equipment. The type of camera system purchased may depend upon the type of microscopy performed in the laboratory. Fluorescence microscopy will require a camera that is capable of operating at very low light levels. A digital camera will provide higher resolution than a video camera capable of only 470 or 750 lines of horizontal resolution. The operating platform (e.g., DOS, Windows, OS/2, Macintosh, UNIX, VAX/VMS) chosen for the imaging system may depend on the platform already existing in the laboratory or upon the programming expertise available. With any of these systems, purchase as much central processing unit (CPU) power and memory as is affordable, especially if 3-dimensional modeling is being planned. Once images have been obtained, they can be printed or shared with other researchers using network tools such as Mosaic. RP Mason, PA (reprint author), USAF,AL,OERB,OPERAT TECHNOL CROP,BLDG 1184,8308 HAWKS RD,BROOKS AFB,TX 78235, USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0378-4754 J9 MATH COMPUT SIMULAT JI Math. Comput. Simul. PD DEC 5 PY 1995 VL 40 IS 1-2 BP 101 EP 106 DI 10.1016/0378-4754(95)00020-6 PG 6 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering; Mathematics, Applied SC Computer Science; Mathematics GA TL296 UT WOS:A1995TL29600007 ER PT J AU SUDARSHAN, TS GRADINARU, G KORONY, G MITCHEL, W HOPKINS, RH AF SUDARSHAN, TS GRADINARU, G KORONY, G MITCHEL, W HOPKINS, RH TI HIGH-FIELD EFFECTS IN HIGH-RESISTIVITY SILICON-CARBIDE IN LATERAL CONFIGURATIONS SO APPLIED PHYSICS LETTERS LA English DT Article ID SYSTEMS AB Results of the high field performance of single-crystal bulk 6H-SiC of relatively high resistivity (similar to 500 Omega cm) are reported. Prebreakdown and breakdown phenomena of SIC at high fields are studied using lateral device geometries, particularly suitable for photoconductive power switches and other high voltage power devices. The influence of the electrode configuration, gap length, sample geometry, and contact technology on the high field responses of SiC is discussed. Ohmic response and relatively large hold-off fields (>80 kV/cm) are reported for this material in vacuum and SF6 gas. (C) 1995 American Institute of Physics. C1 WESTINGHOUSE SCI & TECHNOL CTR,PITTSBURGH,PA 15235. USAF,WRIGHT LAB,MLPO,WRIGHT PATTERSON AFB,OH 45433. RP SUDARSHAN, TS (reprint author), UNIV S CAROLINA,DEPT ELECT & COMP ENGN,COLUMBIA,SC 29208, USA. NR 13 TC 9 Z9 9 U1 3 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 4 PY 1995 VL 67 IS 23 BP 3435 EP 3437 DI 10.1063/1.115271 PG 3 WC Physics, Applied SC Physics GA TH287 UT WOS:A1995TH28700022 ER PT J AU Steel, RP Rentsch, JR AF Steel, RP Rentsch, JR TI Influence of cumulation strategies on the long-range prediction of absenteeism SO ACADEMY OF MANAGEMENT JOURNAL LA English DT Article ID JOB-SATISFACTION; META-ANALYSIS; ABSENCE; WORK; STRESS; STABILITY; ATTITUDES; BEHAVIORS; TURNOVER AB The ability of three different types of self-report variables-biographical, attitudinal, and stress-to predict 70 months of absenteeism data was evaluated. Absence scores were aggregated in two different ways, as annualized segments and as longitudinal data cumulations. Biographical variables and attitudinal measures significantly predicted long-term absenteeism. In addition, results suggested that dependency relationships between absence metrics and cumulation periods may affect validational outcomes. C1 WRIGHT STATE UNIV,DAYTON,OH 45435. RP Steel, RP (reprint author), USAF,INST TECHNOL,TYNDALL AFB,FL, USA. NR 32 TC 24 Z9 24 U1 0 U2 8 PU ACAD MANAGEMENT PI ADA PA PO BOX 39 300 SOUTH UNION STREET, ADA, OH 45810-0039 SN 0001-4273 J9 ACAD MANAGE J JI Acad. Manage. J. PD DEC PY 1995 VL 38 IS 6 BP 1616 EP 1634 DI 10.2307/256846 PG 19 WC Business; Management SC Business & Economics GA TQ309 UT WOS:A1995TQ30900006 ER PT J AU SHAW, L MIRACLE, D ABBASCHIAN, R AF SHAW, L MIRACLE, D ABBASCHIAN, R TI MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF METAL/OXIDE AND METAL/SILICIDE INTERFACES SO ACTA METALLURGICA ET MATERIALIA LA English DT Article ID METAL-ALUMINA INTERFACES; FRACTURE-TOUGHNESS; DUCTILE REINFORCEMENTS; BIMATERIAL INTERFACES; MOLYBDENUM DISILICIDE; COMPOSITES; STRENGTH; MOSI2; RESISTANCE; SPECIMENS AB Fracture energies of Al2O3/Nb interfaces and MoSi2/Nb interfaces with and without Al2O3 coating were measured using sandwich-type chevron-notched specimens. The relations between the mechanical properties, microstructures, types of bonds at the interface and processing routes were explored. The fracture energy of the Al2O3/Nb interface was determined to be 9 J/m(2) and changed to 16 J/m(2) when Nb was pre-oxidized before the formation of the Al2O2/Nb interface. The fracture energy of the MoSi2/Nb interface could not be determined directly because of the formation of the interfacial compounds. However, the fracture energy at the MoSi2/Nb interfacial region was found to depend on the interfacial bond strength, roughness of interfaces and microstructure of interfacial compounds. The interfacial fracture energies of Al2O3 with silicides, MoSi2, Nb5Si3, or (Nb, Mo)Si-2 were estimated to be about 16 J/m(2), while the interfacial fracture energies between two silicides or between Nb and a silicide were larger than 34 J/m(2). The measured fracture energies of the various interfaces are discussed in terms of the interfacial microstructures and types of bonds at the interfaces. C1 UNIV CONNECTICUT, INST MAT SCI, STORRS, CT 06269 USA. UNIV FLORIDA, DEPT MAT SCI & ENGN, GAINESVILLE, FL 32611 USA. USAF, WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. RP SHAW, L (reprint author), UNIV CONNECTICUT, DEPT MET, STORRS, CT 06269 USA. NR 71 TC 24 Z9 24 U1 0 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0956-7151 J9 ACTA METALL MATER JI Acta Metall. Mater. PD DEC PY 1995 VL 43 IS 12 BP 4267 EP 4279 DI 10.1016/0956-7151(95)00130-N PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA TG524 UT WOS:A1995TG52400005 ER PT J AU Winston, HA Clark, RT Buchina, G AF Winston, HA Clark, RT Buchina, G TI AGETS MBR - An application of model-based reasoning to gas turbine diagnostics SO AI MAGAZINE LA English DT Article ID QUALITATIVE PROCESS THEORY; SIMULATION; BEHAVIOR; PHYSICS AB A common difficulty in diagnosing failures within Pratt ST Whitney's F100-PW-100/200 gas turbine engine occurs when a fault in one part of a system-comprising an engine, an airframe, a test cell, and automated ground engine test set (AGETs) equipment-is manifested as an out-of-bound parameter elsewhere in the system. In such cases, the normal procedure is to run AGETS self-diagnostics on the abnormal parameter. However, because the self-diagnostics only test the specified local parameter, it will pass, leaving only the operators' experience and traditional fault-isolation manuals to locate the source of the problem in another part of the system. This article describes a diagnostic tool (that is, AGETS MBR), designed to overcome this problem by isolating failures using an overall system troubleshooting approach. AGETS MBR was developed jointly by personnel at Pratt Sr Whitney and United Technologies Research Center using an AI tool called the qualitative reasoning system (gas). C1 SUN MICROSYST INC,SUNSERV DIV,MT VIEW,CA 94043. PRATT & WHITNEY,KELLY AFB,SAN ANTONIO,TX. RP Winston, HA (reprint author), UNITED TECHNOL RES CTR,E HARTFORD,CT 06108, USA. NR 15 TC 0 Z9 0 U1 1 U2 1 PU AMER ASSOC ARTIFICIAL INTELL PI MENLO PK PA 445 BURGESS DRIVE, MENLO PK, CA 94025-3496 SN 0738-4602 J9 AI MAG JI AI Mag. PD WIN PY 1995 VL 16 IS 4 BP 67 EP 77 PG 11 WC Computer Science, Artificial Intelligence SC Computer Science GA TL702 UT WOS:A1995TL70200008 ER PT J AU GAITONDE, D SHANG, JS AF GAITONDE, D SHANG, JS TI STRUCTURE OF A TURBULENT DOUBLE-FIN INTERACTION AT MACH-4 SO AIAA JOURNAL LA English DT Article ID BOUNDARY-LAYER; SHOCK-WAVE; FLOWFIELD AB This paper examines the three-dimensional shock-wave/turbulent boundary-layer interaction in an inletlike geometry consisting of symmetrically placed 15-deg fins on a plate in an oncoming Mach 4 flow. Two different implicit numerical methods are employed to solve the full three-dimensional mean compressible Navier-Stokes equations: 1) a high resolution upwind scheme with the Baldwin-Lomax algebraic turbulence model and 2) the traditional Beam-Warming approach with a k-epsilon model, The comparison with experiment is very good for surface pressures, pitot pressure surveys, and surface shear patterns, although discrepancies with skin friction data are evident in the trailing portion of the interaction, Both computational schemes, despite major differences in modeling, predict similar flow structures in agreement with previous results at Mach 8. The flow is described in terms of a separated, nonreattaching boundary layer, a vortex interaction, longitudinal centerline vortices, and entrainment. The computed and experimental shock patterns are related to the streamline structure to provide a unified understanding of the flow field. RP GAITONDE, D (reprint author), USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 22 TC 20 Z9 20 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD DEC PY 1995 VL 33 IS 12 BP 2250 EP 2258 DI 10.2514/3.12976 PG 9 WC Engineering, Aerospace SC Engineering GA TJ059 UT WOS:A1995TJ05900002 ER PT J AU JOHNSON, RA BELK, DM AF JOHNSON, RA BELK, DM TI MULTIGRID APPROACH TO OVERSET GRID COMMUNICATION SO AIAA JOURNAL LA English DT Article ID EULER EQUATIONS; MESHES; FLOW AB The nonaligned multigrid method is introduced as an alternative to boundary point interpolation for communication in overset grid systems. The nonaligned multigrid method treats the individual grids as levels in a multigrid solution procedure. This technique was able to converge 69% faster than standard boundary point interpolation for Mach 2 flow over a 5-deg ramp and 28% faster for a more complex reflected shock case. For these test cases, the largest increase in convergence rate came from applying the nonaligned multigrid method to the communication between overset grids. Further coarsening of the global grid was next in effectiveness, and coarsening of local grids gave little improvement. RP JOHNSON, RA (reprint author), USAF,WRIGHT LAB,ARMAMENT DIRECTORATE,DIV WEAP FLIGHT MECH,AERODYNAM BRANCH,EGLIN AFB,FL 32542, USA. NR 19 TC 4 Z9 4 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD DEC PY 1995 VL 33 IS 12 BP 2305 EP 2308 DI 10.2514/3.12984 PG 4 WC Engineering, Aerospace SC Engineering GA TJ059 UT WOS:A1995TJ05900010 ER PT J AU CARRLOPEZ, SM MALLETT, MS MORSE, T AF CARRLOPEZ, SM MALLETT, MS MORSE, T TI THE TABLET SPLITTER - BARRIER TO COMPLIANCE OR COST-SAVING INSTRUMENT SO AMERICAN JOURNAL OF HEALTH-SYSTEM PHARMACY LA English DT Note C1 UNIV PACIFIC,SCH PHARM,DEPT PHARM PRACTICE,STOCKTON,CA 95211. UNIV PACIFIC,SCH PHARM,DEPT PHARM PRACTICE,STOCKTON,CA 95211. RP CARRLOPEZ, SM (reprint author), SGSP,MED GRP 60,CLIN INVEST FACIL,101 BODIN CIRCLE,TRAVIS AFB,CA, USA. NR 0 TC 16 Z9 16 U1 0 U2 3 PU AMER SOC HEALTH-SYSTEM PHARMACISTS PI BETHESDA PA 7272 WISCONSIN AVE, BETHESDA, MD 20814 SN 1079-2082 J9 AM J HEALTH-SYST PH JI Am. J. Health-Syst. Pharm. PD DEC 1 PY 1995 VL 52 IS 23 BP 2707 EP 2708 PG 2 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA TH536 UT WOS:A1995TH53600012 PM 8601268 ER PT J AU Woltz, DJ Shute, VJ AF Woltz, DJ Shute, VJ TI Time course of forgetting exhibited in repetition priming of semantic comparisons SO AMERICAN JOURNAL OF PSYCHOLOGY LA English DT Article ID WORD-FRAGMENT COMPLETION; LEXICAL DECISION TASK; SKILL ACQUISITION; MEMORY; IDENTIFICATION; INDEPENDENCE; AUTOMATICITY; DYNAMICS; CURVES; FORM AB We report two studies that used a semantic comparison task to investigate forgetting in repetition priming over various delay intervals. Experiment 1 investigated the form of forgetting in priming effects (latency savings) over intervals up to 90 min. Logarithmic, exponential-power, and power forgetting functions fitted the data equally well, but they made different predictions about the degree of priming after longer delay intervals. Experiment 2 tested these predictions by assessing repetition savings after an 8-day delay. A power function provided the best account of priming loss. The findings are discussed with respect to the longevity of implicit memory measures and the previously observed dissociations between implicit and explicit memory measures. C1 ARMSTRONG LAB,BROOKS AFB,TX. RP Woltz, DJ (reprint author), UNIV UTAH,DEPT EDUC PSYCHOL,327 MILTON BENNION HALL,SALT LAKE CITY,UT 84112, USA. NR 41 TC 11 Z9 11 U1 0 U2 3 PU UNIV ILLINOIS PRESS PI CHAMPAIGN PA 1325 S OAK ST, CHAMPAIGN, IL 61820 SN 0002-9556 J9 AM J PSYCHOL JI Am. J. Psychol. PD WIN PY 1995 VL 108 IS 4 BP 499 EP 525 DI 10.2307/1423070 PG 27 WC Psychology, Multidisciplinary SC Psychology GA TN545 UT WOS:A1995TN54500002 ER PT J AU RONNETT, BM ZAHN, CM KURMAN, RJ KASS, ME SUGARBAKER, PH SHMOOKLER, BM AF RONNETT, BM ZAHN, CM KURMAN, RJ KASS, ME SUGARBAKER, PH SHMOOKLER, BM TI DISSEMINATED PERITONEAL ADENOMUCINOSIS AND PERITONEAL MUCINOUS CARCINOMATOSIS - A CLINICOPATHOLOGICAL ANALYSIS OF 109 CASES WITH EMPHASIS ON DISTINGUISHING PATHOLOGICAL FEATURES, SITE OF ORIGIN, PROGNOSIS, AND RELATIONSHIP TO PSEUDOMYXOMA-PERITONEI SO AMERICAN JOURNAL OF SURGICAL PATHOLOGY LA English DT Article DE PSEUDOMYXOMA PERITONEI; DISSEMINATED PERITONEAL ADENOMUCINOSIS; PERITONEAL MUCINOUS CARCINOMATOSIS; APPENDICEAL ADENOMA; MUCINOUS ADENOMA; MUCINOUS ADENOCARCINOMA; MUCINOUS TUMOR OF LOW MALIGNANT POTENTIAL; APPENDIX; OVARY ID OVARIAN EPITHELIAL TUMORS; CRYPT CELL-CARCINOMA; BORDERLINE MALIGNANCY; APPENDICEAL ORIGIN; EXPERIENCE; MUCOCELE; BENIGN; CANCER AB Pseudomyxoma peritonei (PMP) is a poorly understood condition characterized by mucinous ascites and mucinous implants diffusely involving the peritoneal surfaces. There is considerable debate regarding the definition, pathology, site of origin, and prognosis of PMP. We analyzed the clinicopathologic features of 109 cases of multifocal peritoneal mucinous tumors to develop a pathologic definition of cases characterized by the clinical condition PMP. Cases were separated into two diagnostic categories: disseminated peritoneal adenomucinosis (DPAM) and peritoneal mucinous carcinomatosis (PMCA). Cases classified as DPAM were characterized by peritoneal lesions composed of abundant extracellular mucin containing scant simple to focally proliferative mucinous epithelium with little cytologic atypia or mitotic activity, with or without an associated appendiceal mucinous adenoma. Cases classified as PMCA were characterized by peritoneal lesions composed of more abundant mucinous epithelium with the architectural and cytologic features of carcinoma, with or without an associated primary mucinous adenocarcinoma. Sixty-five of the 109 cases (59.6%) were classified as DPAM consistent with origin from an appendiceal mucinous adenoma. Thirty-seven of the 65 cases (56.9%) had a documented appendiceal mucinous adenoma. Thirty cases (27.5%) were classified as PMCA consistent with origin from an appendiceal or intestinal mucinous adenocarcinoma. Fourteen cases (12.8%) were classified as PMCA with features intermediate between DPAM and PMCA or with discordant features based on the finding of at least focal areas of carcinoma in the peritoneal lesions, whether or not the primary site demonstrated carcinoma. The cases with intermediate features were derived from well-differentiated appendiceal or intestinal mucinous adenocarcinomas and had peritoneal lesions displaying features of DPAM as well as focal areas of mucinous carcinoma. The cases with discordant features were derived from atypical appendiceal adenomas with little or no histologic evidence of a transition from adenoma to carcinoma and had peritoneal lesions uniformly composed of mucinous carcinoma. There was a statistically significant difference in survival between cases classified as DPAM, those classified as PMCA with intermediate or discordant features, and those classified as PMCA (p < 0.0001). The age-adjusted 5-year survival rates were 84% for patients with DPAM, 37.6% for patients with PMCA with intermediate or discordant features, and 6.7% for patients with PMCA. The term DPAM should be used to diagnose the histologically benign peritoneal lesions associated with ruptured appendiceal mucinous adenomas and those that are pathologically identical but lack a demonstrable appendiceal adenoma. Cases with the pathologic features of adenocarcinoma should be designated PMCA because they have recognizably different pathologic features and a significantly worse prognosis. C1 JOHNS HOPKINS UNIV HOSP,DIV GYNECOL PATHOL,BALTIMORE,MD 21287. JOHNS HOPKINS UNIV HOSP,DIV GYNECOL PATHOL,BALTIMORE,MD 21287. JOHNS HOPKINS UNIV HOSP,DEPT GYNECOL & OBSTET,BALTIMORE,MD 21287. WILFORD HALL USAF MED CTR,DEPT OBSTET & GYNECOL,SAN ANTONIO,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,SAN ANTONIO,TX 78236. WASHINGTON HOSP CTR,DEPT PATHOL,WASHINGTON,DC 20010. WASHINGTON HOSP CTR,DEPT SURG,WASHINGTON,DC 20010. WASHINGTON CANC INST,WASHINGTON,DC. NR 44 TC 415 Z9 439 U1 1 U2 6 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0147-5185 J9 AM J SURG PATHOL JI Am. J. Surg. Pathol. PD DEC PY 1995 VL 19 IS 12 BP 1390 EP 1408 DI 10.1097/00000478-199512000-00006 PG 19 WC Pathology; Surgery SC Pathology; Surgery GA TG926 UT WOS:A1995TG92600006 PM 7503361 ER PT J AU RUDGE, FW AF RUDGE, FW TI VARIATIONS IN THE PRESENTATION OF ALTITUDE-INDUCED CHOKES SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID DECOMPRESSION-SICKNESS AB Altitude-induced decompression sickness (DCS) remains a potential risk for individuals involved in flying or altitude chamber activities. The pulmonary form of DCS, commonly referred to as chokes, although uncommon, represents the most serious manifestation of the disease. This study reports the Davis Hyperbaric Laboratory experience with altitude-induced chokes from 1 January 1966 to 31 July 1994. Age, gender, type and extent of altitude exposure, time of symptom development, type of initial symptoms, and response to treatment were reviewed for each chokes patient. There were 15 cases of chokes; all were treated with compression therapy with complete resolution. Only 2 of the 15 individuals presented with the classic triad of substernal chest pain, dyspnea, and cough. Substernal chest pain was universally present, and usually occurred very early in the course of the disease. The other classic triad symptoms were frequently absent. The etiology, pathophysiology, and treatment of chokes are discussed. RP RUDGE, FW (reprint author), USAF,SCH AEROSP MED,DEPT AEROSP MED,2513 KENNEDY CIRCLE,BROOKS AFB,TX 78235, USA. NR 17 TC 2 Z9 2 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD DEC PY 1995 VL 66 IS 12 BP 1185 EP 1187 PG 3 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA TG912 UT WOS:A1995TG91200010 PM 8747614 ER PT J AU Nguyen, BV AF Nguyen, BV TI The instrument responses of the SKM-3 system and the designated seismic station vault seismic system SO BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA LA English DT Article AB We present the system transfer functions and responses due to inputs of impulses in ground displacement, velocity, acceleration, and acceleration integral of the two systems: the SKM-3 system of the former Soviet ESSN (Unified Seismic Observation System) and the Designated Seismic Station (DSS) Vault Seismic System (VSS) used by the United States for monitoring the Threshold Test Ban Treaty (TTBT) protocol at the in-country DSS sites of the Commonwealth of Independent States (CIS). We show that the amplitude of the transfer function formulas for the electromagnetic seismograph used by the former Soviet Union seismologists can be analytically traced back to the original Hagiwara's equation. This thereby allows us to restore the phase to the CIS's version. Some examples of instrument deconvolution/convolution are given using various system transfer functions of the SKM-3 and DSS VSS. RP Nguyen, BV (reprint author), HQ AFTAC TTR,1030 S HIGHWAY A1A,PATRICK AFB,FL 32925, USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU SEISMOLOGICAL SOC AMER PI EL CERRITO PA PLAZA PROFESSIONAL BLDG, SUITE 201, EL CERRITO, CA 94530 SN 0037-1106 J9 B SEISMOL SOC AM JI Bull. Seismol. Soc. Amer. PD DEC PY 1995 VL 85 IS 6 BP 1835 EP 1846 PG 12 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA TL814 UT WOS:A1995TL81400022 ER PT J AU Nelson, JJ Chang, CL AF Nelson, JJ Chang, CL TI A mass conservative least-squares finite element method for the Stokes problem SO COMMUNICATIONS IN NUMERICAL METHODS IN ENGINEERING LA English DT Article DE least-square finite element; Stokes problem; mass conservation; incompressible flow ID MULTIPLIERS AB In the paper the simulation of incompressible flow in 2D by the least-squares finite element method (LSFEM) in the velocity-vorticity-pressure version is studied. A problem with this method is that it does not conserve mass exactly, i.e. div u(h) not equal 0 exactly. In the paper a modified LSFEM is developed which enforces a near zero residual of mass conservation, i.e. div u is nearly zero at every point of the discretization. This is accomplished by adding an extra restriction in the divergence free equation through the Lagrange multiplier strategy. C1 CLEVELAND STATE UNIV,DEPT MATH,CLEVELAND,OH 44115. RP Nelson, JJ (reprint author), USAF,WRIGHT LABS,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 1 Z9 1 U1 0 U2 2 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1069-8299 J9 COMMUN NUMER METH EN JI Commun. Numer. Methods Eng. PD DEC PY 1995 VL 11 IS 12 BP 965 EP 970 DI 10.1002/cnm.1640111202 PG 6 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications SC Engineering; Mathematics GA TL089 UT WOS:A1995TL08900001 ER PT J AU VANBEELEN, P BURRIS, DR AF VANBEELEN, P BURRIS, DR TI REDUCTION OF THE EXPLOSIVE 2,4,6-TRINITROTOLUENE BY ENZYMES FROM AQUATIC SEDIMENTS SO ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY LA English DT Article DE SEDIMENT; ENZYMES; REDUCTION; TNT; NITROAROMATIC COMPOUNDS ID CONTAMINATED SOILS; TNT; TRANSFORMATION; IMMOBILIZATION; STRAIN AB Enzymes were extracted from aquatic sediments. Some of these enzymes reduced 2,4,6-trinitrotoluene (TNT) with nicotinamide adenosine dinucleotide phosphate (NADPH) as an electron donor under aerobic conditions. The origin of these enzymes was not clear as the enzymes were extracted from a sediment containing plant roots and microorganisms. Aquatic plants were determined to be a source of TNT-reducing enzymes. Chemical reduction was not a rate-limiting process in the assays as the enzymatic activity was inhibited by heating or the addition of proteases. Enzymatic activity in the extracts was further characterized. Partial purifications of enzymes from the sediment extracts shows that several proteins capable of reducing TNT with NADPH were present. The enzymes did not require flavins and preferred NADPH over NADH as the electron donor. The pH optimum for the stability of the enzymes was near neutral, and the temperature optimum was in the 37 to 45 degrees C range. Addition of dithiothreitol improved the stability of the enzymes. The enzymes reduced 2,4,6-trinitrotoluene to 2-amino-4,6-dinitrotoluene, 4-amino-2,6-dinitrotoluene, 2,4-diamino-6-nitrotoluene, and 2,6-diamino-4-nitrotoluene under aerobic conditions with NADPH. When used as a starting substrate, the aminodinitrotoluenes were not reduced by the enzymes. It might be possible that the hydroxylaminodinitrotoluenes are reduced to di[hydroxylamine]nitrotoluenes prior to the formation of the diaminonitrotoluenes. Sediments from 11 surface water bodies were examined for the presence of TNT-reducing enzymes, and 10 were found to have activity. These enzymes appear to be ubiquitous and are present in both freshwater and saltwater sediments. Reduction of TNT by sediment enzymes can be a significant environmental fate process for TNT in aquatic systems. C1 USAF, ARMSTRONG LAB, EQC, TYNDALL AFB, FL 32403 USA. RP NATL INST PUBL HLTH & ENVIRONM PROTECT, ECOTOXICOL LAB, POB 1, 3720 BA BILTHOVEN, NETHERLANDS. NR 29 TC 18 Z9 18 U1 0 U2 4 PU WILEY-BLACKWELL PI HOBOKEN PA 111 RIVER ST, HOBOKEN 07030-5774, NJ USA SN 0730-7268 EI 1552-8618 J9 ENVIRON TOXICOL CHEM JI Environ. Toxicol. Chem. PD DEC PY 1995 VL 14 IS 12 BP 2115 EP 2123 DI 10.1897/1552-8618(1995)14[2115:ROTETB]2.0.CO;2 PG 9 WC Environmental Sciences; Toxicology SC Environmental Sciences & Ecology; Toxicology GA TH135 UT WOS:A1995TH13500015 ER PT J AU KENNEDY, PK AF KENNEDY, PK TI A FIRST-ORDER MODEL FOR COMPUTATION OF LASER-INDUCED BREAKDOWN THRESHOLDS IN OCULAR AND AQUEOUS-MEDIA .1. THEORY SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID PICOSECOND OPTICAL-BREAKDOWN; LIQUID WATER; IONIZATION; CAVITATION; PULSES; GENERATION; REDUCTION; DAMAGE AB An analytic, first-order model has been developed to calculate irradiance thresholds for laser-induced breakdown (LIE) in condensed media, including ocular and aqueous media, The model is derived from the simple rate equation formalism of Shen for cascade breakdown in solids and from the theory of multiphoton ionization in condensed media developed by Keldysh. Analytic expressions have been obtained for the irradiance thresholds corresponding to multiphoton breakdown, to cascade breakdown, and to initiation of cascade breakdown by multiphoton ionization of seed electrons (multiphoton initiation threshold). The model has been incorporated into a computer code and code results compared to experimentally measured irradiance thresholds for breakdown of ocular and aqueous media by nanosecond, picosecond, and femtosecond laser pulses in the visible and near-infrared, The code and comparison of code results to experiment have been documented in a second paper (Part II). RP KENNEDY, PK (reprint author), ARMSTRONG LAB,DIV OPT RADIAT,BROOKS AFB,TX 78235, USA. NR 39 TC 189 Z9 196 U1 0 U2 19 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD DEC PY 1995 VL 31 IS 12 BP 2241 EP 2249 DI 10.1109/3.477753 PG 9 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA TG947 UT WOS:A1995TG94700022 ER PT J AU KENNEDY, PK BOPPART, SA HAMMER, DX ROCKWELL, BA NOOJIN, GD ROACH, WP AF KENNEDY, PK BOPPART, SA HAMMER, DX ROCKWELL, BA NOOJIN, GD ROACH, WP TI A FIRST-ORDER MODEL FOR COMPUTATION OF LASER-INDUCED BREAKDOWN THRESHOLDS IN OCULAR AND AQUEOUS-MEDIA .2. COMPARISON TO EXPERIMENT SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article AB An analytic, first-order model has been developed to calculate irradiance thresholds for laser-induced breakdown (LIE) in condensed media, including ocular and aqueous media, A complete derivation and description of the model was given in a previous paper (Part I), The model has been incorporated into a computer code and code results have been compared to experimentally measured irradiance thresholds for breakdown of ocular media, saline, and water by nanosecond, picosecond, and femtosecond laser pulses in the visible and mar-infrared, The comparison included both breakdown data from the literature and from our own measurements, Theoretical values match experiment to within a factor of 2 or better, over a range of pulsewidths spanning five orders of magnitude. C1 ANALYT SCI CORP,SAN ANTONIO,TX 78212. RP KENNEDY, PK (reprint author), ARMSTRONG LAB,DIV OPT RADIAT,BROOKS AFB,TX 78235, USA. RI Boppart, Stephen/C-7338-2009 NR 20 TC 86 Z9 91 U1 0 U2 7 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD DEC PY 1995 VL 31 IS 12 BP 2250 EP 2257 DI 10.1109/3.477754 PG 8 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA TG947 UT WOS:A1995TG94700023 ER PT J AU Southall, HL Simmers, JA ODonnell, TH AF Southall, HL Simmers, JA ODonnell, TH TI Direction finding in phased arrays with a neural network beamformer SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION LA English DT Article AB Adaptive neural network processing of phased-array antenna received signals promises to decrease antenna manufacturing and maintenance costs while increasing mission uptime and performance between repair actions. We introduce one such neural network which performs aspects of digital beamforming with imperfectly manufactured, degraded, or failed antenna components. This paper presents measured results achieved with an adaptive radial basis function (ARBF) artificial neural network architecture which learned the single source direction finding (DF) function of an eight-element X-band array having multiple, unknown failures and degradations. We compare the single source DF performance of this ARBF neural network, whose internal weights are computed using a modified gradient descent algorithm, with another radial basis function network, Linnet, whose weights are calculated using linear algebra. Both networks are compared to a traditional DF approach using monopulse. C1 ARCON CORP,WALTHAM,MA 02154. RP Southall, HL (reprint author), USAF,ROME LAB,ELECTROMAGNET & RELIABIL DIRECTORATE,BEDFORD,MA 01731, USA. NR 12 TC 52 Z9 57 U1 0 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-926X J9 IEEE T ANTENN PROPAG JI IEEE Trans. Antennas Propag. PD DEC PY 1995 VL 43 IS 12 BP 1369 EP 1374 DI 10.1109/8.475924 PG 6 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA TK500 UT WOS:A1995TK50000003 ER PT J AU FAGIN, B MITAL, A AF FAGIN, B MITAL, A TI THE PERFORMANCE OF COUNTER-BASED AND CORRELATION-BASED SCHEMES FOR BRANCH TARGET BUFFERS SO IEEE TRANSACTIONS ON COMPUTERS LA English DT Article DE BRANCH CORRELATION; BRANCH PREDICTION; BRANCH TARGET BUFFER; PERFORMANCE MODELING; TRACE-DRIVEN SIMULATION AB Branch target buffers, or BTBs, can be used to improve CPU performance by maintaining target and history information of previously executed branches, We present trace-driven simulation results comparing counter-based and correlation-based prediction schemes for a variety of branch target buffer sizes, We report relative performance estimates to show both the relative merits of various techniques and their effects on performance for current microprocessors. Our results indicate that counter-based schemes outperform correlation-based schemes for small buffers, but that the opposite becomes true as buffer size increases, This is due to the importance of hit ratio over prediction success in branch target buffer design, The transition point between counter- and correlation-based schemes is dependent on the size of the working set of dynamic branches for a given collection of benchmark programs. Our results also show that for small BTBs, hit ratio and hence performance decrease as the number of correlation bits increase, This is due to non-random distribution of correlation vectors causing increased collisions for BTB locations, Only when a BTB becomes large enough to capture the working set of a program's branch and correlation vector references do the expected benefits of correlation-based schemes manifest themselves. C1 MICROSOFT CORP,REDMOND,WA. RP FAGIN, B (reprint author), USAF ACAD,DEPT COMP SCI,2354 FAIRCHILD DR,SUITE 6K41,COLORADO SPRINGS,CO 80840, USA. NR 18 TC 1 Z9 1 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0018-9340 J9 IEEE T COMPUT JI IEEE Trans. Comput. PD DEC PY 1995 VL 44 IS 12 BP 1383 EP 1393 DI 10.1109/12.477244 PG 11 WC Computer Science, Hardware & Architecture; Engineering, Electrical & Electronic SC Computer Science; Engineering GA TJ775 UT WOS:A1995TJ77500003 ER PT J AU Brothers, CP Pugh, RD AF Brothers, CP Pugh, RD TI Simulating total-dose and dose-rate effects on digital microelectronics timing delays using VHDL SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB This paper describes a fast timing simulator based on Very High Speed Integrated Circuit (VHSIC) Hardware Description Language (VHDL) for simulating the timing of digital microelectronics in pre-irradiation, total dose, and dose-rate radiation environments. The goal of this research is the rapid and accurate timing simulation of radiation-hardened microelectronic circuits before, during, and after exposure to ionizing radiation. The results of this research effort were the development of VHDL compatible models capable of rapid and accurate simulation of the effect of radiation on the timing performance of microelectronic circuits. The effects of radiation for total dose at 1 Mrad(Si) and dose rates up to 2 x 10(12) rads(Si) per second were modeled for a variety of Separation by IMplantation of OXygen (SIMOX) circuits. In all cases tested, the VHDL simulations ran at least 600 times faster than SPICE while maintaining a timing accuracy to within 15 percent of SPICE values. RP Brothers, CP (reprint author), USAF,PHILLIPS LAB,SPACE & MISSILES TECHNOL DIRECTORATE,MICROELECTR & PHOTON RES BRANCH,KIRTLAND AFB,NM 87117, USA. NR 7 TC 3 Z9 3 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1628 EP 1635 DI 10.1109/23.488759 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000014 ER PT J AU Frederickson, AR Bell, JT Beidl, EA AF Frederickson, AR Bell, JT Beidl, EA TI Analytic approximation for charge current and deposition by 0.1 to 100 MeV electrons in thick slabs SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB An analytic function is developed for approximation of current penetration and charge deposition as a function of depth with normal incidence high energy electrons on slabs. The slabs must be thicker than the electron penetration depth and be composed of one material. Six adjustable parameters are evaluated to fit the function to tabulated ITS monte carlo and experimental electron deposition data. The results were developed from data spanning the entire energy range in C, Al, Cu, Ag, and Au, but are assumed to apply to all atomic number materials at all energies in the range. C1 MIT,DEPT ELECT ENGN,CAMBRIDGE,MA 02139. RP Frederickson, AR (reprint author), USAF,PHILLIPS LAB,BEDFORD,MA 01731, USA. NR 9 TC 7 Z9 7 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1910 EP 1921 PN 1 PG 12 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000052 ER PT J AU OHair, JR Suter, BW AF OHair, JR Suter, BW TI A block multirate paradigm for efficient parallel algorithm development SO IEEE TRANSACTIONS ON SIGNAL PROCESSING LA English DT Letter AB In this correspondence, a new multirate paradigm is introduced. Multirate is shown to be a powerful divide and conquer methodology capable of being applied to the entire field of numerical linear algebra. Multirate can he successfully applied to vector-vector, matrix-vector, and matrix-matrix operations, These operations form the foundation of such software suites as LAPACK. Since LAPACK is dependent upon BLAS, and BLAS is, in turn, dependent upon these three operations. it can be seen that multirate can be applied to problems encountered throughout the field of numerical linear algebra. As an example of practical numerical linear algebra problems (which happen to he encountered in signal processing), the new paradigm for multirate is applied to the FFT. In the case of the FFT, multirate provides an alternate means of generating the Four Step FFT reported by Van Loan for use in MIMD shared memory architectures. Thus, multirate can be applied to traditionally sequential algorithms to improve their performance. C1 USAF,INST TECHNOL,AFIT,ENGN,WRIGHT PATTERSON AFB,OH 45433. NR 13 TC 0 Z9 0 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1053-587X J9 IEEE T SIGNAL PROCES JI IEEE Trans. Signal Process. PD DEC PY 1995 VL 43 IS 12 BP 3042 EP 3046 DI 10.1109/78.476453 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA TP317 UT WOS:A1995TP31700032 ER PT J AU SIMPSON, JR KEATS, JB AF SIMPSON, JR KEATS, JB TI TRADE-OFF ANALYSIS VERSUS CONSTRAINED OPTIMIZATION WITH AN ECONOMIC-CONTROL CHART MODEL SO IIE TRANSACTIONS LA English DT Article ID DESIGN AB Trade-off analysis after optimization of an economic CUSUM control chart is proposed. This procedure exploits the relatively flat response surface in the neighborhood of the optimal design. Comments are made with respect to criticisms of pure economic models and the difficulties with constrained optimization. Two previously published numerical examples are used to demonstrate that, by using trade-off analysis, large gains in statistical properties are attainable with little increase in cost. By focusing on designs with improved in-control and out-of-control run length performance, false-alarm rates can be reduced and the ability to detect process shifts quickly can be increased. C1 ARIZONA STATE UNIV, COLL ENGN & APPL SCI, DEPT IND & MANAGEMENT SYST ENGN, TEMPE, AZ 85287 USA. RP USAF ACAD, DEPT MATH SCI, COLORADO SPRINGS, CO 80840 USA. NR 21 TC 7 Z9 7 U1 1 U2 2 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0740-817X EI 1545-8830 J9 IIE TRANS JI IIE Trans. PD DEC PY 1995 VL 27 IS 6 BP 765 EP 772 DI 10.1080/07408179508936793 PG 8 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA TH693 UT WOS:A1995TH69300008 ER PT J AU Reitman, JS AF Reitman, JS TI The debate on assisted suicide - Redefining morally appropriate care for people with intractable suffering SO ISSUES IN LAW & MEDICINE LA English DT Article; Proceedings Paper CT Conference on the Christian Stake in Dignity and Dying CY JUL 15, 1995 CL TRINITY INT UNIV, BANNOCKBURN, IL SP Inst Bioethics & Human Dign HO TRINITY INT UNIV ID LIFE-SUSTAINING TREATMENT; RATIONAL SUICIDE; ETHICAL DILEMMAS; DEATH; DISABILITIES; PHYSICIAN; ILL; DIE RP Reitman, JS (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236, USA. NR 83 TC 3 Z9 3 U1 0 U2 0 PU ISSUES LAW & MEDICINE PI TERRE HAUTE PA PO BOX 1586, TERRE HAUTE, IN 47808-1586 SN 8756-8160 J9 ISSUES LAW MED JI Issues Law Med. PD WIN PY 1995 VL 11 IS 3 BP 299 EP 329 PG 31 WC Law SC Government & Law GA TQ484 UT WOS:A1995TQ48400006 PM 8586542 ER PT J AU REE, MJ CARRETTA, TR TEACHOUT, MS AF REE, MJ CARRETTA, TR TEACHOUT, MS TI ROLE OF ABILITY AND PRIOR JOB KNOWLEDGE IN COMPLEX TRAINING PERFORMANCE SO JOURNAL OF APPLIED PSYCHOLOGY LA English DT Article ID EXPERIENCE; RATINGS; MODELS AB A causal model of the role of general cognitive ability and prior job knowledge in subsequent job-knowledge acquisition and work-sample performance during training was developed. Participants were 3,428 U.S. Air Force officers in pilot training. The measures of ability and prior job knowledge came from the Air Force Officer Qualifying Test. The measures of job knowledge acquired during training were derived from classroom grades. Work-sample measures came from check flight ratings. The causal model showed that ability directly influenced the acquisition of job knowledge. General cognitive ability influenced work samples through job knowledge. Prior job knowledge had almost no influence on subsequent job knowledge but directly influenced the early work sample. Early training job knowledge influenced subsequent job knowledge and work-sample performance. Finally, early work-sample performance strongly influenced subsequent work-sample performance. RP REE, MJ (reprint author), ARMSTRONG LAB,HRMA,HUMAN RESOURCES DIRECTORATE,7909 LINDBERGH DR,BROOKS AFB,TX 78235, USA. NR 30 TC 62 Z9 62 U1 3 U2 7 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0021-9010 J9 J APPL PSYCHOL JI J. Appl. Psychol. PD DEC PY 1995 VL 80 IS 6 BP 721 EP 730 DI 10.1037//0021-9010.80.6.721 PG 10 WC Psychology, Applied; Management SC Psychology; Business & Economics GA TJ228 UT WOS:A1995TJ22800008 ER PT J AU CYBYK, BZ ORAN, ES BORIS, JP ANDERSON, JD AF CYBYK, BZ ORAN, ES BORIS, JP ANDERSON, JD TI COMBINING THE MONOTONIC LAGRANGIAN GRID WITH A DIRECT SIMULATION MONTE-CARLO MODEL SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID DYNAMICS; ALGORITHM AB Using the monotonic Lagrangian grid (MLG) as a data structure in the direct simulation Monte Carte (DSMC) methodology produces an approach that automatically adjusts grid resolution to time-varying densities in the flow. The MLG algorithm is an algorithm for tracking and sorting moving particles, and it has a monotonic data structure for indexing and storing the physical attributes of the particles. The DSMC method is a direct particle simulation technique widely used in predicting rarefied flows of dilute gases. Monotonicity features of the MLG ensure that particles close in physical space are stored in adjacent array locations so that particle interactions may be restricted to a ''template'' of near neighbors. The MLG templates provide a time-varying grid network that automatically adapts to local number densities within the flowfield. Computational advantages and disadvantages of this new implementation are demonstrated by a series of test problems. (C) 1995 Academic Press, Inc. C1 USN,RES LAB,WASHINGTON,DC 20375. UNIV MARYLAND,COLLEGE PK,MD 20742. RP CYBYK, BZ (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 23 TC 6 Z9 6 U1 1 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD DEC PY 1995 VL 122 IS 2 BP 323 EP 334 DI 10.1006/jcph.1995.1218 PG 12 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA TK080 UT WOS:A1995TK08000012 ER PT J AU Thompson, PE Kreifels, TL Gregg, M Hengehold, RL Yeo, YK Simons, DS Twigg, ME Fatemi, M Hobart, K AF Thompson, PE Kreifels, TL Gregg, M Hengehold, RL Yeo, YK Simons, DS Twigg, ME Fatemi, M Hobart, K TI The growth and characterization of Si1-xGex multiple quantum wells on Si(110) and Si(111) SO JOURNAL OF CRYSTAL GROWTH LA English DT Article; Proceedings Paper CT 6th International Symposium on Silicon Molecular Beam Epitaxy of the 1995 E-MRS Spring Conference CY MAY 22-26, 1995 CL STRASBOURG, FRANCE SP Council Europe, Commiss European Communities, E MRS ID MOLECULAR-BEAM EPITAXY; INTERSUBBAND ABSORPTION; SILICON AB Undoped and boron-doped multiple quantum well heterostructures composed of Si1-xGex have been grown on Si(110) and Si(111) substrates. Photoluminescence (PL), secondary ion mass spectrometry (SIMS), transmission electron microscopy, and X-ray diffraction have been used to characterize the structures. The structures with the highest quality, as defined by quantum confined FL, were grown at 710 degrees C, however SIMS revealed that substantial boron migration out of the wells occurred at this growth temperature. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. SFA INC,LANDOVER,MD 20785. RP Thompson, PE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0248 J9 J CRYST GROWTH JI J. Cryst. Growth PD DEC PY 1995 VL 157 IS 1-4 BP 21 EP 26 DI 10.1016/0022-0248(95)00368-1 PG 6 WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied SC Crystallography; Materials Science; Physics GA TN785 UT WOS:A1995TN78500005 ER PT J AU POULSEN, WB DOVE, SB DELRIO, CE AF POULSEN, WB DOVE, SB DELRIO, CE TI EFFECT OF NICKEL-TITANIUM ENGINE-DRIVEN INSTRUMENT ROTATIONAL SPEED ON ROOT-CANAL MORPHOLOGY SO JOURNAL OF ENDODONTICS LA English DT Article ID HAND INSTRUMENTATION; TORSIONAL PROPERTIES; MASTER; FILES AB Thirty-six mesial canals in 18 extracted human mandibular molars were randomly allocated to three experimental groups. Specimens were prepared and evaluated using a modified Bramante technique. Teeth were sectioned at the midroot and apical regions. Canals were prepared with the Lightspeed instruments rotating at 750, 1300, or 2000 rpm. Digitized uninstrumented and instrumented canal images were compared via subtraction software. There was no significant difference (p < 0.05) among the three experimental groups in the amount of dentin removed, canal transportation, or the ability of the instrument to remain centered in the canal. C1 UNIV TEXAS,HLTH SCI CTR,SCH DENT,DEPT ENDODONT,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT ENDODONT,LACKLAND AFB,TX 78236. NR 19 TC 16 Z9 17 U1 0 U2 2 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0099-2399 J9 J ENDODONT JI J. Endod. PD DEC PY 1995 VL 21 IS 12 BP 609 EP 612 DI 10.1016/S0099-2399(06)81113-1 PG 4 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TH217 UT WOS:A1995TH21700006 PM 8596082 ER PT J AU Tamborski, C Chen, LS AF Tamborski, C Chen, LS TI Regiospecific synthesis of aromatic compounds via organometallic intermediates .6. 1,3,5-Perfluoroalkylether benzenes SO JOURNAL OF FLUORINE CHEMISTRY LA English DT Article DE regiospecific synthesis; perfluoroalkylether benzenes; mass spectrometry; IR spectroscopy AB 1,3,5-Tribromobenzene can undergo a mono lithium-halogen exchange reaction to yield 3,5-Br2C6H3Li which can subsequently react with a perfluoroalkylether ester, R(f)OR(f)C(O)OC2H5, yielding the aryl ketone 3,5-Br2C6H3C(O)R(f)R(f). A classical SF4/HF reaction of this ketone yields the perfluoroalkylether benzene,3,5-Br(2)C(6)H(3)CF(2)R(f)OR(f). This process can be repeated stepwise until all bromines are substituted, yielding the final product 1,3,5-C6H3(CF(2)R(f)OR(f))(3). The R(f)OR(f) was chosen as C3F7O[CF(CF3)CF2O]2CF(CF3). Other perfluoroalkyl- and perfluoroalkyl-ether esters or other electrophiles can be chosen to react with the various organolithium intermediates. C1 USAF, WRIGHT LAB, MAT DIRECTORATE, WRIGHT PATTERSON AFB, OH 45433 USA. UNIV DAYTON, RES INST, DAYTON, OH 45469 USA. NR 8 TC 2 Z9 2 U1 1 U2 3 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0022-1139 J9 J FLUORINE CHEM JI J. Fluor. Chem. PD DEC PY 1995 VL 75 IS 2 BP 117 EP 120 DI 10.1016/0022-1139(95)03307-0 PG 4 WC Chemistry, Inorganic & Nuclear; Chemistry, Organic SC Chemistry GA TK594 UT WOS:A1995TK59400002 ER PT J AU Posta, CG AF Posta, CG TI Laparoscopic appendectomy - Reply SO JOURNAL OF LAPAROENDOSCOPIC SURGERY LA English DT Letter RP Posta, CG (reprint author), SURG CLIN,75TH MED GRP,HILL AFB,UT 84056, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 1052-3901 J9 J LAPAROENDOSC SURG JI J. Laparoendosc. Surg. PD DEC PY 1995 VL 5 IS 6 BP 420 EP 421 DI 10.1089/lps.1995.5.420 PG 2 WC Surgery SC Surgery GA TL958 UT WOS:A1995TL95800014 ER PT J AU Fanton, JW Cosgrove, DJ Golden, JG AF Fanton, JW Cosgrove, DJ Golden, JG TI Gastrin levels and gastric emptying times in rhesus monkeys with a history of acute gastric dilatation SO JOURNAL OF MEDICAL PRIMATOLOGY LA English DT Article DE macaque; macaca; bloat; physiology; overfeeding; radiography ID IMMUNOREACTIVITY; VOLVULUS; DOGS AB Abnormal gastric motility has been suggested as a possible causative factor for acute gastric dilatation observed in nonhuman primates. To evaluate gastric motility in a colony, fasting serum gastrin immunoreactivity and gastric emptying times were assessed in rhesus monkeys that had survived single episodes of acute gastric dilatation. These were paired with age- and weight-matched control monkeys from the same colony. Neither gastric emptying times nor gastrin assays were significantly different between the acute gastric dilatation and control groups. RP Fanton, JW (reprint author), ARMSTRONG LAB,OEV,VET SCI DIV,2509 KENNEDY CIRCLE,BROOKS AFB,TX 78235, USA. NR 20 TC 1 Z9 1 U1 1 U2 2 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0047-2565 J9 J MED PRIMATOL JI J. Med. Primatol. PD DEC PY 1995 VL 24 IS 4 BP 243 EP 245 PG 3 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA TR381 UT WOS:A1995TR38100005 PM 8750500 ER PT J AU DUDLEY, WH PEET, AL FLAGGERT, JJ AF DUDLEY, WH PEET, AL FLAGGERT, JJ TI OTOPLASTY FOR CORRECTION OF THE PROMINENT EAR SO JOURNAL OF ORAL AND MAXILLOFACIAL SURGERY LA English DT Article AB The oral and maxillofacial surgeon is aware of the need to evaluate and treat the entire facial complex, To gain maximum esthetic results, excessive ear prominence occasionally needs to be addressed, Excessive ear prominence can be the result of failure of scapha folding, conchal hypertrophy, conchal malposition, or a combination of these deformities, Management of this problem is based on the accurate diagnosis of the deformity and a thorough understanding of the basic techniques that address them, This article presents an overview of otoplasty for the treatment of prominent ears. C1 WILFORD HALL USAF MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,LACKLAND AFB,TX 78236. MED GRP 60,DEPT ORAL & MAXILLOFACIAL SURG,TRAVIS AFB,CA. NR 8 TC 5 Z9 5 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0278-2391 J9 J ORAL MAXIL SURG JI J. Oral Maxillofac. Surg. PD DEC PY 1995 VL 53 IS 12 BP 1386 EP 1391 DI 10.1016/0278-2391(95)90660-6 PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TH303 UT WOS:A1995TH30300004 PM 7490647 ER PT J AU DRAKES, JA AF DRAKES, JA TI FRANCK-CONDON FACTORS OF THE MGCL (A-X) BAND SYSTEM SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article ID PREDISSOCIATION AB A necessary quantity for modeling the radiative transfer of the magnesium chloride (A-X) electronic band system are the Franck-Condon factors. This report cites an effort to calculate the MgCl (A-X) Franck-Condon factors using RKR potentials for the ground and excited states. Because of an avoided crossing occurring for v > 6 in the A(2)II state, only the lowest seven vibrational levels are considered. A comparison of the present RKR results is made with a recent ab initio treatment of the electronic structure of the ground and excited states which show very good agreement between the two approaches. Since (MgCl)-Mg-24-Cl-35 constitutes only 60% of naturally occurring MgCl, and since the vibrational constants for both the ground and excited states are not large, an examination of the impact of isotope mass upon the Franck-Condon factors was made. Although an effect was observed, the change in the Franck-Condon factors for varying isotopes was negligible for practical radiative transfer calculations. The final result, regardless of the isotope, shows that the Franck-Condon factors for the MgCl (A-X) system reflect the strongly vertical nature of this electronic transition. RP DRAKES, JA (reprint author), SVERDRUP TECHNOL INC,ARNOLD ENGN DEV CTR,ARNOLD AFB,TN 37389, USA. NR 19 TC 1 Z9 1 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD DEC PY 1995 VL 54 IS 6 BP 1039 EP 1044 DI 10.1016/0022-4073(95)00133-6 PG 6 WC Optics; Spectroscopy SC Optics; Spectroscopy GA TH123 UT WOS:A1995TH12300015 ER PT J AU Brisbois, JE AF Brisbois, JE TI Connections between first- and second-language reading SO JOURNAL OF READING BEHAVIOR LA English DT Article ID 2ND LANGUAGE; PROFICIENCY AB This study builds upon previous research examining the relationship between first-language (LI) reading, second-language (L2) knowledge, and L2 reading. The unique contributions of L1 reading, L2 vocabulary, and L2 grammatical skill to L2 reading scores are investigated along with whether or not the contributions differ by course level. Subjects included 131 students (88 beginners and 43 upper level) enrolled in French at the U.S. Air Force Academy. Data were analyzed using multiple regression. Two programs were run for each subject group because L1 reading was measured using two different tests-recall protocols and the comprehension portion of the Nelson Denny Test. All of the independent variables contributed significantly for beginners, but did so for the upper level subjects only when LI protocols were used as the reading measure. Typically, L1 reading contributed substantially, particularly for the upper level group, supporting Cummins's (1981) Hypothesis. This study demonstrates the importance of L1 reading and L2 knowledge to L2 reading comprehension. RP Brisbois, JE (reprint author), USAF ACAD, WASHINGTON, DC 20330 USA. NR 39 TC 32 Z9 32 U1 0 U2 3 PU NATL READING CONFERENCE INC PI CHICAGO PA 200 NORTH MICHIGAN AVE, CHICAGO, IL 60602 USA SN 0022-4111 J9 J READING BEHAV JI J. Read. Behav. PD DEC PY 1995 VL 27 IS 4 BP 565 EP 584 PG 20 WC Education & Educational Research; Psychology, Educational SC Education & Educational Research; Psychology GA UE012 UT WOS:A1995UE01200005 ER PT J AU MEFFERT, JJ DAVIS, BM GRIMWOOD, RE AF MEFFERT, JJ DAVIS, BM GRIMWOOD, RE TI LICHEN-SCLEROSUS - REPLY SO JOURNAL OF THE AMERICAN ACADEMY OF DERMATOLOGY LA English DT Letter RP MEFFERT, JJ (reprint author), WILFORD HALL USAF MED CTR,PSMD,DEPT DERMATOL,2200 BERQUIST DR,SUITE 1,LACKLAND AFB,TX 78236, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0190-9622 J9 J AM ACAD DERMATOL JI J. Am. Acad. Dermatol. PD DEC PY 1995 VL 33 IS 6 BP 1059 EP 1060 DI 10.1016/0190-9622(95)90327-5 PG 2 WC Dermatology SC Dermatology GA TH611 UT WOS:A1995TH61100030 ER PT J AU Singleton, WL Smikle, CB Hankins, GDV Hubbard, GB Ehler, WJ Brasky, KB AF Singleton, WL Smikle, CB Hankins, GDV Hubbard, GB Ehler, WJ Brasky, KB TI Surgical correction of severe vaginal introital stenosis in female baboons (Papio sp) infected with Simian agent 8 SO LABORATORY ANIMAL SCIENCE LA English DT Article ID HERPESVIRUS AB Simian agent 8 (SA8) is a neurotropic, endemic alphaherpesvirus in Papio sp. Lesions associated with simian agent 8 infections usually involve the genitalia of sexually mature baboons. In females, secondary bacterial infections may lead to scarring of the vulva and perineum, with resulting vaginal obstruction. Affected baboons are poor breeders and often develop urinary tract infections due to retention of urine in the vagina. Reconstructive vaginal surgery was performed on seven baboons with vaginal obstruction. Four weeks before surgery, 50 mg of Depo-Provera(R) was administered intramuscularly to each animal to arrest the estrous cycle, reduce swelling, and allow adequate surgical exposure of the vagina. Ventral and circular incisions were made around the constricted vagina. The peripheral skin was excised to break down the underlying connective tissue, allowing access to the vaginal mucosa. Healthy vaginal tissue was then opposed to the incised skin edges with 3-0 Vicryl in an interrupted pattern. Once healed, the vaginas remained patent, allowing normal mating and urination. Nine months after surgery, five baboons had healthy infants, and pregnancy was confirmed in the other two animals. The described procedure may allow female baboons previously infertile and at risk of urinary tract infections to be returned to a healthy reproductive state. C1 SW FDN BIOMED RES,DEPT LAB ANIM MED,SAN ANTONIO,TX. USAF,MED CTR,DEPT OBSTET & GYNECOL & CLIN INVEST,LACKLAND AFB,TX. NR 11 TC 6 Z9 7 U1 0 U2 0 PU AMER ASSOC LABORATORY ANIMAL SCIENCE PI CORDOVA PA 70 TIMBERCREEK DR, SUITE 5, CORDOVA, TN 38018 SN 0023-6764 J9 LAB ANIM SCI JI Lab. Anim. Sci. PD DEC PY 1995 VL 45 IS 6 BP 628 EP 630 PG 3 WC Veterinary Sciences; Zoology SC Veterinary Sciences; Zoology GA TL467 UT WOS:A1995TL46700001 PM 8746520 ER PT J AU Carlson, JL AF Carlson, JL TI Rocky Mountain National Park: A 100 year perspective - Barron,TA SO LIBRARY JOURNAL LA English DT Book Review RP Carlson, JL (reprint author), VANDENBERG AFB LIB,VANDENBERG AFB,CA 93437, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD DEC PY 1995 VL 120 IS 20 BP 140 EP 140 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA TK468 UT WOS:A1995TK46800207 ER PT J AU Larsen, JM Russ, SM Jones, JW AF Larsen, JM Russ, SM Jones, JW TI An evaluation of fiber-reinforced titanium matrix composites for advanced high-temperature aerospace applications SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT Symposium on the Creep and Fatigue of Metal Matrix Composites CY 1994 CL SAN FRANCISCO, CA SP TMS, SMD, ASM, MSD ID THERMAL FATIGUE; SCS-6 AB The current capabilities of continuous silicon-carbide fiber-reinforced titanium matrix composites (TMCs) are reviewed with respect to application needs and compared to the capabilities of conventional high-temperature monolithic alloys and aluminides. In particular, the properties of a first generation titanium aluminide composite, SCS-6/Ti-24Al-11Nb, and a second-generation metastable beta alloy composite, SCS-6/TIMETAL 21S, are compared with the nickel-base superalloy IN100, the high-temperature titanium alloy Ti-1100, and a relatively new titanium aluminide alloy. Emphasis is given to life-limiting cyclic and monotonic properties and to the influence of time-dependent deformation and environmental effects on these properties. The composite materials offer a wide range of performance capabilities, depending on laminate architecture. In many instances, unidirectional composites exhibit outstanding properties, although the same materials loaded transverse to the fiber direction typically exhibit very poor properties, primarily due to the weak fiber/matrix interface. Depending on the specific mechanical property under consideration, composite cross-ply laminates often show no improvement over the capability of conventional monolithic materials. Thus, it is essential that these composite materials be tailored to achieve a balance of properties suitable to the specific application needs if these materials are to be attractive candidates to replace more conventional materials. C1 UNIV MICHIGAN,DEPT MAT SCI & ENGN,ANN ARBOR,MI 48109. RP Larsen, JM (reprint author), USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 50 TC 32 Z9 32 U1 0 U2 9 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD DEC PY 1995 VL 26 IS 12 BP 3211 EP 3223 DI 10.1007/BF02669450 PG 13 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA TK802 UT WOS:A1995TK80200016 ER PT J AU WATSON, JW AF WATSON, JW TI UNABSORBED OVERHEAD COSTS AND THE EICHLEAY FORMULA SO MILITARY LAW REVIEW LA English DT Article RP WATSON, JW (reprint author), USAF,JUDGE ADVOCATE GEN DEPT,AFMC,LAW OFF,DIV PROGRAM SYST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU JUDGE ADVOCATE GENERALS SCHOOL PI CHARLOTTESVILLE PA US ARMY, CHARLOTTESVILLE, VA 22903-1781 SN 0026-4040 J9 MIL LAW REV JI Milit. Law Rev. PD WIN PY 1995 VL 147 BP 262 EP 288 PG 27 WC Law SC Government & Law GA TG270 UT WOS:A1995TG27000005 ER PT J AU VENUS, JT CALHOUN, BC AF VENUS, JT CALHOUN, BC TI URINARY-INCONTINENCE PROCEDURES PERFORMED AT A MILITARY TEACHING HOSPITAL SO MILITARY MEDICINE LA English DT Article AB Purpose: This study provides follow-up of primary modified Pereyra needle urethropexy procedures performed with permanent suture by residents at a military teaching hospital, Method: Review of all resident-performed primary Pereyra urethropexy procedures performed at Keesler Medical Center (KMC) from December 1990 through April 1994. Results: The results from 34 primary Pereyra needle urethropexy procedures, with 24 patients less than 2 years from surgery and mean follow-up of 19.5 months, demonstrated that 21/24 had improvement in their incontinence. This gives an 88% success rate at less than 2 years. We had 10 patients more than 2 years from surgery, with mean follow-up of 38 months, and 6/10 with continence, The overall success rate was 27/34 (79%). We noted that on preoperative evaluation, 5/7 failures were found to have urethral closing pressures of <20 cm H2O (8-18), One of the late failures was found to have had no cystometrics performed and no demonstrable stress urinary incontinence. Her procedure was termed ''prophylactic.'' Removing 6/7 failures for incomplete evaluation or use of less appropriate procedure, we find 27/28 patients (96%) with successful results, The presence of low urethral pressure (<20 cm H2O) was a significant factor in the failures regardless of timing (<2 years vs, >2 years) (p < 0.04). There was no difference in parity, estrogen use, urgency component, age, socioeconomic status, associated operative procedures, postoperative infection, or complications noted between successful and unsuccessful Pereyra urethropexy as a primary method of genuine stress incontinence surgery. Conclusion: The primary Pereyra needle urethropexy had an overall success rate of 79% (27/34), Allowing for properly evaluated and treated patients, we find 96% (27/28) success, It appears that the primary modified Pereyra vaginal urethropexy with permanent suture is an easily taught and superior method of primary surgical treatment of stress urinary incontinence in a military training program. RP VENUS, JT (reprint author), USAF,MED CTR,KEESLER AFB,MS 39534, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD DEC PY 1995 VL 160 IS 12 BP 612 EP 614 PG 3 WC Medicine, General & Internal SC General & Internal Medicine GA TJ283 UT WOS:A1995TJ28300004 ER PT J AU CALHOUN, BC BOMBARD, AT BREHM, W ROBERTS, WE AF CALHOUN, BC BOMBARD, AT BREHM, W ROBERTS, WE TI MANAGEMENT OF IMMUNE THROMBOCYTOPENIA PURPURA AT A MILITARY MEDICAL-CENTER SO MILITARY MEDICINE LA English DT Article AB Objective: To investigate whether fetal platelets in immune thrombocytopenia purpura (ITP) may be predicted by antepartum assessment, Methods: A prospective analysis was conducted of 28 pregnant women with ITP out of 8,056 deliveries, Of the 28 patients, 13 Were evaluated by fetal scalp sampling and 11 Were evaluated by percutaneous umbilical blood sampling (PUBS), Results: The mean fetal and maternal platelet counts prior to delivery were 146,000 and 176,000, respectively. The mean fetal and maternal platelet counts after delivery were 245,000 and 149,000, respectively, Fetal cord platelet counts could not be predicted by maternal platelet count, the presence/absence of maternal direct/indirect anti-platelet antibodies, steroid therapy, or history of splenectomy, PUBS for fetal platelet assessment correlated well with fetal postdelivery counts. Conclusions: Patients with ITP rarely exhibit complications. No antepartum characteristic enhances reliable prediction of neonatal outcome. Method of delivery should be based on obstetric guidelines. RP CALHOUN, BC (reprint author), USAF,MED CTR,KEESLER AFB,MS 39534, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD DEC PY 1995 VL 160 IS 12 BP 620 EP 624 PG 5 WC Medicine, General & Internal SC General & Internal Medicine GA TJ283 UT WOS:A1995TJ28300007 PM 8775387 ER PT J AU Abadi, J AF Abadi, J TI The Palestine conflict in the history, of modern Iraq: The dynamics of involvement, 1928-1948 - Eppel,M SO MILLENNIUM-JOURNAL OF INTERNATIONAL STUDIES LA English DT Book Review RP Abadi, J (reprint author), USAF ACAD,DEPT HIST,COLORADO SPRINGS,CO 80840, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MILLENNIUM-J INT STUD PI LONDON PA LONDON SCHOOL ECONOMICS HOUGHTON ST, LONDON, ENGLAND WC2A 2AE SN 0305-8298 J9 MILLENNIUM-J INT ST JI Millennium-J. Int. Stud. PD WIN PY 1995 VL 24 IS 3 BP 613 EP 614 DI 10.1177/03058298950240030517 PG 2 WC International Relations SC International Relations GA TM112 UT WOS:A1995TM11200035 ER PT J AU HARRISON, MJ LEIS, HT JOHNSON, BA MACDONALD, WD GOLDMAN, CD AF HARRISON, MJ LEIS, HT JOHNSON, BA MACDONALD, WD GOLDMAN, CD TI HEMANGIOPERICYTOMA OF THE SCIATIC NOTCH PRESENTING AS SCIATICA IN A YOUNG HEALTHY MAN - CASE-REPORT SO NEUROSURGERY LA English DT Note DE ATYPICAL SCIATICA; HEMANGIOPERICYTIC MENINGIOMA; HEMANGIOPERICYTOMA; SCIATIC NOTCH ID MENINGIOMA; TUMORS; NERVE AB A CASE OF hemangiopericytoma of the sciatic notch presenting with sciatica in a healthy 33-year-old man is presented. Tumors of the sciatic notch are exceedingly rare, and few data pertaining to the entity are found in the literature. A few series have been published on neurogenic tumors of the sciatic nerve, and one series of hemangiopericytomas mentions a case in which the sciatic nerve in the thigh is involved with tumor. To our knowledge, this is the first case in the literature detailing a hemangiopericytoma spanning the sciatic notch. Hemangiopericytomas are well known to neurosurgeons as durally based lesions and have been categorized as a subtype of meningioma. However, hemangiopericytomas are vascular sarcomas that most commonly occur in the pelvis and thigh. A brief discussion of the symptoms of sciatic notch lesions and hemangiopericytomas is included. C1 USAF,DAVID GRANT MED CTR,DIV NEURORADIOL,TRAVIS AFB,CA 94535. USAF,DAVID GRANT MED CTR,DIV SURG ONCOL,TRAVIS AFB,CA 94535. USAF,DAVID GRANT MED CTR,DEPT PATHOL,TRAVIS AFB,CA 94535. RP HARRISON, MJ (reprint author), USAF,DAVID GRAND MED CTR,DIV NEUROSURG,60TH MED GRP,101 BODIN CIRCLE,TRAVIS AFB,CA 94535, USA. NR 13 TC 9 Z9 9 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0148-396X J9 NEUROSURGERY JI Neurosurgery PD DEC PY 1995 VL 37 IS 6 BP 1208 EP 1211 PG 4 WC Clinical Neurology; Surgery SC Neurosciences & Neurology; Surgery GA TG527 UT WOS:A1995TG52700076 PM 8584164 ER PT J AU LINNE, MA MORSE, DC SKILOWITZ, JL FIECHTNER, GJ GORD, JR AF LINNE, MA MORSE, DC SKILOWITZ, JL FIECHTNER, GJ GORD, JR TI 2-DIMENSIONAL PUMP-PROBE IMAGING IN REACTING FLOWS SO OPTICS LETTERS LA English DT Article ID SPECTROSCOPY AB We demonstrate that picosecond pump-probe spectroscopy can be used to acquire quantitative two-dimensional images of species in flames, using a loss-modulation-based two-dimensional phase-sensitive detection system mounted in front of a CCD camera. This system is currently limited to detection of 1% modulation depth, but it can be significantly improved. The instrument permits high data collection rates, and it provides a quenching-independent signal without the need for calibration. The signal is embedded in a coherent laser beam, making it possible to perform optical processing before the camera. (C) 1995 Optical Society of America C1 USAF,WRIGHT LAB,AERO PROP & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP LINNE, MA (reprint author), COLORADO SCH MINES,DIV ENGN,GOLDEN,CO 80401, USA. NR 6 TC 2 Z9 2 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0146-9592 J9 OPT LETT JI Opt. Lett. PD DEC 1 PY 1995 VL 20 IS 23 BP 2414 EP 2416 DI 10.1364/OL.20.002414 PG 3 WC Optics SC Optics GA TH459 UT WOS:A1995TH45900020 PM 19865237 ER PT J AU Wiseman, JB Arriaga, MA Houston, GD Boyd, EM AF Wiseman, JB Arriaga, MA Houston, GD Boyd, EM TI Facial paralysis and inflammatory pseudotumor of the facial nerve in a child SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Note C1 WILFORD HALL USAF MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,SAN ANTONIO,TX 78236. WILFORD HALL USAF MED CTR,DEPT PATHOL,SAN ANTONIO,TX 78236. NR 6 TC 12 Z9 12 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD DEC PY 1995 VL 113 IS 6 BP 826 EP 828 DI 10.1016/S0194-5998(95)70033-1 PG 3 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA TK813 UT WOS:A1995TK81300033 PM 7501405 ER PT J AU Quinones, MA Ford, JK Teachout, MS AF Quinones, MA Ford, JK Teachout, MS TI The relationship between work experience and job performance: A conceptual and meta-analytic review SO PERSONNEL PSYCHOLOGY LA English DT Article; Proceedings Paper CT 23rd International Congress of Applied Psychology CY JUL 17-22, 1994 CL MADRID, SPAIN SP Int Congress Appl Psychol ID VALIDITY; PROFICIENCY; DECISIONS; SENIORITY; CRITERIA; ABILITY; RATINGS; TIME; AGE AB A gap in the conceptual development of the work experience construct was addressed by creating a framework specifying two dimensions along which work experience measures can vary. The dimensions of measurement mode (amount, time, and type) and level of specificity (task, job, organizational) formed nine separate categories of measures of work experience. The usefulness of the conceptual framework was tested by conducting a meta-analytic review of the existing literature on work experience using the dimensions in the framework as potential moderators of the experience-performance relationship. Results of the meta-analysis (N = 25,911; K = 44) revealed an estimated population correlation of .27 between experience and performance after correcting for sampling error and criterion unreliability. In addition, the results showed that amount (M(<(rho)over bar>) = .43) and task-level (M(<(rho)over bar>) = .41) measures of work experience had the highest correlations with measures of job performance. In addition, work experience had the highest correlations with hard (e.g. work samples) as opposed to soft (e.g. ratings) measures of job performance (M<(rho)over bar> = .39 vs. M<(rho)over bar> = .24). Implications and directions for future research are discussed. C1 MICHIGAN STATE UNIV,E LANSING,MI 48824. USAF,BROOKS AFB,TX 78235. RP Quinones, MA (reprint author), RICE UNIV,DEPT PSYCHOL,6100 S MAIN ST,HOUSTON,TX 77005, USA. NR 62 TC 225 Z9 232 U1 6 U2 80 PU PERSONNEL PSYCHOLOGY INC PI BOWLING GREEN PA 745 HASKINS ROAD, SUITE A, BOWLING GREEN, OH 43402 SN 0031-5826 J9 PERS PSYCHOL JI Pers. Psychol. PD WIN PY 1995 VL 48 IS 4 BP 887 EP 910 DI 10.1111/j.1744-6570.1995.tb01785.x PG 24 WC Psychology, Applied; Management SC Psychology; Business & Economics GA TK817 UT WOS:A1995TK81700006 ER PT J AU SIMPSON, TB LIU, JM HUANG, KF TAI, K CLAYTON, CM GAVRIELIDES, A KOVANIS, V AF SIMPSON, TB LIU, JM HUANG, KF TAI, K CLAYTON, CM GAVRIELIDES, A KOVANIS, V TI CAVITY ENHANCEMENT OF RESONANT FREQUENCIES IN SEMICONDUCTOR-LASERS SUBJECT TO OPTICAL-INJECTION SO PHYSICAL REVIEW A LA English DT Note ID INSTABILITIES; FEEDBACK AB The injection of an optical signal into a semiconductor laser biased near or above the lasing threshold modifies the coupling between the free carriers and the intracavity field. The detuning between the frequency of the injected signal and the free-running oscillation frequency and the ratio of the photon lifetime to the carrier lifetime are key parameters in determining the enhancement of the carrier-field resonant coupling frequency and the stability of the output field. Experimental results using a vertical cavity surface emitting laser biased near threshold are in agreement with calculations using a lumped-element oscillator model. C1 UNIV CALIF LOS ANGELES,DEPT ELECT ENGN,LOS ANGELES,CA 90095. NATL CHIAO TUNG UNIV,DEPT ELECTROPHYS,HSINCHU 30050,TAIWAN. USAF,PHILLIPS LAB,CTR NONLINEAR OPT,KIRTLAND AFB,NM 87117. RP SIMPSON, TB (reprint author), JAYCOR,POB 85154,SAN DIEGO,CA 92186, USA. NR 11 TC 11 Z9 11 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD DEC PY 1995 VL 52 IS 6 BP R4348 EP R4351 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA TK652 UT WOS:A1995TK65200011 ER PT J AU COULLIETTE, DL LOPER, DE AF COULLIETTE, DL LOPER, DE TI EXPERIMENTAL, NUMERICAL AND ANALYTICAL MODELS OF MANTLE STARTING PLUMES SO PHYSICS OF THE EARTH AND PLANETARY INTERIORS LA English DT Article ID TEMPERATURE-DEPENDENT VISCOSITY; BOUNDARY-LAYER; FLOOD BASALTS; CONVECTION; HEADS; CORE; EVOLUTION; THERMALS; DYNAMICS; TAILS AB The results of a combined experimental, numerical and analytical investigation of starting thermal plumes are described, to obtain a better perspective on plumes within the Earth's mantle. Thermal plumes were generated experimentally in a tank of corn syrup by means of an electrical heater. Viscosity ratios of 400, 30 000, and 10(8) were generated by varying the temperature of the tank. Plumes for the smaller ratios had the traditional 'balloon-on-a-string' shape, but that at the highest ratio had a novel morphology. The plume heads in the first two cases were observed to rise at roughly a constant speed, in contrast to most previous studies which found the plume heads to accelerate. Loss of buoyancy from the plume head owing to heat loss is believed to be responsible for this difference. Starting plumes were simulated numerically using an axisymmetric, finite-element code to solve the Boussinesq equations at finite Prandtl numbers. The constant rise speed observed experimentally was confirmed by the numerical simulation for the viscosity ratios of 400 and 30 000, but numerical instability prevented simulation of the case with a viscosity ratio of 10(8). There was very good agreement between the experimental and numerical rise speeds. An analytical model was developed which reduces to previous models in limiting cases. This parameterization gives better agreement with the experimental and numerical results than does any previous model. C1 FLORIDA STATE UNIV,INST GEOPHYS FLUID DYNAM,TALLAHASSEE,FL 32306. RP COULLIETTE, DL (reprint author), USAF,INST TECHNOL,DEPT MATH & STAT,WRIGHT PATTERSON AFB,OH 45433, USA. NR 37 TC 23 Z9 28 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0031-9201 J9 PHYS EARTH PLANET IN JI Phys. Earth Planet. Inter. PD DEC PY 1995 VL 92 IS 3-4 BP 143 EP 167 DI 10.1016/0031-9201(95)03052-4 PG 25 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA TG818 UT WOS:A1995TG81800002 ER PT J AU Hwu, WMW Hank, RE Gallagher, DM Mahlke, SA Lavery, DM Haab, GE Gyllenhaal, JC August, DI AF Hwu, WMW Hank, RE Gallagher, DM Mahlke, SA Lavery, DM Haab, GE Gyllenhaal, JC August, DI TI Compiler technology for future microprocessors SO PROCEEDINGS OF THE IEEE LA English DT Article ID TRACE AB Advances in hardware technology have made it possible Sol microprocessors to execute a large number of instructions concurrently (i.e., in parallel). These microprocessors take advantage of the opportunity to execute instructions in parallel to increase the execution speed of a program. As in other for-ms of parallel parallel processing, the performance of these microprocessors can vary greatly depending on the quality of the software. In particular, the quality of compilers can make an order of magnitude difference in performance. This paper presents a new generation of compiler technology that has emerged to deliver the large amount of instruction-level-parallelism that is already required by some current state-of-the-art microprocessors and will be required by more future microprocessors. We introduce critical components of the technology which deal with difficult problems that are encountered when compiling programs for a high degree of instruction-level-parallelism. We present examples to illustrate the functional requirements of these components. To provide more insight into the challenges involved, we present in-depth case studies on predicated compilation and maintenance of dependence information, two of the components that are largely missing from most current commercial compilers. C1 USAF, INST TECHNOL, DEPT ELECT & COMP ENGN, WRIGHT PATTERSON AFB, OH 45433 USA. HEWLETT PACKARD LABS, PALO ALTO, CA 94304 USA. RP Hwu, WMW (reprint author), UNIV ILLINOIS, CTR RELIABLE & HIGH PERFORMANCE COMP, URBANA, IL 61801 USA. NR 46 TC 22 Z9 25 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9219 J9 P IEEE JI Proc. IEEE PD DEC PY 1995 VL 83 IS 12 BP 1625 EP 1640 DI 10.1109/5.476079 PG 16 WC Engineering, Electrical & Electronic SC Engineering GA TL430 UT WOS:A1995TL43000004 ER PT J AU Will, MJ Ester, MS Ramirez, SG Tiner, BD McAnear, JT Epstein, L AF Will, MJ Ester, MS Ramirez, SG Tiner, BD McAnear, JT Epstein, L TI Comparison of cephalometric analysis with ethnicity in obstructive sleep apnea syndrome SO SLEEP LA English DT Article DE cephalometric anaylsis; ethnicity; obstructive sleep apnea ID ROENTGENOGRAMS; ABNORMALITIES AB Many studies have documented significant craniomandibular abnormalities in obstructive sleep apnea syndrome (OSAS) patients. Recent literature clearly describes the cephalometric abnormalities commonly associated with OSAS. Studies have not evaluated specific cephalometric abnormalities that may contribute to OSAS by various ethnic groups. Data were collected on 48 patients (20 Caucasian, 15 Black and 13 Hispanic) with completed cephalometric analysis and polysomnography. Cephalometric landmarks, angles and measurements [angle measured from sella to nasion to subspinale point (SNA), angle measured from sella to nasion to supramentale point (SNB), difference between SNA and SNB (ANB), perpendicular distance from gonion to gnathion to hyoid (MP-H), distance from posterior nasal spine to tip of soft palate (PNS-P) and posterior airway space (PAS)] commonly used in the evaluation of OSAS patients were recorded. Measurements were normalized by dividing the observed value by the mean value for the ethnic group. Statistically significant differences in normalized SNA and SNB appeared in the Black and Hispanic groups when compared to the Caucasian group. For both SNA and SNB, Blacks averaged approximately 3.5% above their ethnic mean, whereas Hispanics averaged 1.8-2.8% below their ethnic mean. There was a statistically significant correlation between respiratory distress index (RDI) and MP-H. These baseline cephalometric differences in the ethnic groups studied suggest that surgical intervention might be approached differently in various ethnic groups. Further studies that evaluate the surgical success achieved by various procedures among different ethnic groups may help define surgical protocol in various ethnic groups for OSAS. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PSYCHIAT & SLEEP DISORDERS,SAN ANTONIO,TX. UNIV TEXAS,HLTH SCI CTR,DEPT ORAL & MAXILLOFACIAL SURG,SAN ANTONIO,TX 78284. AUDIE L MURPHY MEM VET ADM MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT PULM & SLEEP MED,LACKLAND AFB,TX 78236. RP Will, MJ (reprint author), BROOKE ARMY MED CTR,DEPT ORAL & MAXILLOFACIAL SURG,FT SAM HOUSTON,TX 78234, USA. NR 11 TC 32 Z9 32 U1 0 U2 2 PU AMER SLEEP DISORDERS ASSOC PI ROCHESTER PA 1610 14TH STREET NW SUITE 300, ROCHESTER, MN 55806 SN 0161-8105 J9 SLEEP JI Sleep PD DEC PY 1995 VL 18 IS 10 BP 873 EP 875 PG 3 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA TQ236 UT WOS:A1995TQ23600008 PM 8746394 ER PT J AU Voevodin, AA Laube, SJP AF Voevodin, AA Laube, SJP TI In situ plasma monitoring of pulsed laser deposition of diamond-like carbon films SO SURFACE & COATINGS TECHNOLOGY LA English DT Article; Proceedings Paper CT 22nd International Conference on Metallurgical Coatings and Thin Films (ICMCTF 1995) CY APR 25-29, 1995 CL SAN DIEGO, CA SP Amer Vacuum Soc, Vacuum Met & Thin Films Div DE laser ablation; process control; diamond-like carbon; thin films ID SPECTROSCOPY AB Pulsed laser deposition (PLD) is a dynamically unstable process, which can be controlled by in situ diagnostic methods. Recently, an optical spectrometer (OS) was used to monitor the plasma composition and a quartz crystal microbalance (QCM) was introduced to control the deposition rate. In the present studies, the development of PLD in situ control is continued by introducing an ion probe into the plasma and using the OS to measure the kinetic energy of carbon ions in diamond-like carbon (DLC) deposition. An original approach was used to read probe currents with 1024 sampling points during the time of flight of ablated species from the target to the substrate. The method was applied to the deposition of DLC, comparing the ablation of graphite and polycarbonate targets, using a 248 nm KrF wavelength. The correlation of probe currents with QCM and OS data is discussed and compared with results from electron energy loss spectroscopy and microindentation studies. Quantitative dependences between the laser fluence and kinetic energy of carbon species, deposition rate and ion current are found. A possible method for in situ control of DLC film growth with required properties is proposed based on the combination of these studies and existing models of DLC deposition and PLD dynamic control. RP Voevodin, AA (reprint author), USAF, WRIGHT LAB, MLIM, MLBT, WRIGHT PATTERSON AFB, OH 45433 USA. RI Voevodin, Andrey/I-6684-2013 NR 16 TC 10 Z9 10 U1 0 U2 1 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD DEC PY 1995 VL 76-77 IS 1-3 BP 670 EP 674 DI 10.1016/0257-8972(96)80004-1 PN 2 PG 5 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA TM180 UT WOS:A1995TM18000044 ER PT J AU MAROHN, MR LACIVITA, KA AF MAROHN, MR LACIVITA, KA TI EVALUATION OF TOTAL NEAR-TOTAL THYROIDECTOMY IN A SHORT-STAY HOSPITALIZATION - SAFE AND COST-EFFECTIVE SO SURGERY LA English DT Article; Proceedings Paper CT 16th Annual Meeting of the American-Association-of-Endocrine-Surgeons CY APR 23-25, 1995 CL PHILADELPHIA, PA SP Amer Assoc Endocrine Surgeons AB Background. Once the decision of perform total/near-total thyroidectomy has been made, common perioperative management strategies include frequent postoperative laboratory determinations, bedside airway adjuncts, and hospital stays of about 3 days. We propose a regimen for safe, cost-effective, short-stay total/near-total thyroidectomy. Methods. One hundred fifty total/near-total thyroidectomies performed between 1991 and 1994 were studied to test our short-stay thyroidectomy regimen. Patients were admitted the day of operation and observed overnight. Serum calcium values were obtained at 8, 14, and 20 hours after operation. Twenty-three-hour discharge criteria included no wound or airway problems, stable vital signs, tolerance of normal diet and activity, and an upsloping serum calcium curve. Results. Of 150 patients undergoing total/near-total thyroidectomy, 145 (97%) met 23-hour discharge criteria. No deaths (0%) occurred. Overall morbidity (six patients [4%)]) included one (0.7%) patient with postoperative hemorrhage, one (0.7%) patient with recurrent laryngeal nerve injury, three (2%) patients with transient hypocalcemia, and one (0.7%) patient with permanent hypocalcemia. Average length of stay was 1.06 days. Conclusions. Significant airway and wound problems rarefy develop beyond the first 12 to 18 hours after total/near-total thyroidectomy. Serial serum calcium determinations used to construct a three-point calcium curve at 20 hours after operation can reliably and safely identify patients at risk to have clinically significant hypocalcemia. Total/near-total thyroidectomy can be performed safely in a short-stay, 23-hour hospitalization setting with substantial cost savings. C1 USAF,MALCOLM GROW MED CTR,WASHINGTON,DC. WILFORD HALL USAF MED CTR,DEPT ENDOCRINOL,LACKLAND AFB,TX 78236. RP MAROHN, MR (reprint author), UNIFORMED SERV UNIV HLTH SCI,DEPT SURG,4301 JONES BRIDGE RD,BETHESDA,MD 20814, USA. NR 10 TC 66 Z9 68 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0039-6060 J9 SURGERY JI Surgery PD DEC PY 1995 VL 118 IS 6 BP 943 EP 948 DI 10.1016/S0039-6060(05)80098-4 PG 6 WC Surgery SC Surgery GA TH947 UT WOS:A1995TH94700005 PM 7491538 ER PT J AU Kolesar, ES Bright, VM Sowders, DM AF Kolesar, ES Bright, VM Sowders, DM TI Mid-infrared (2.5<=lambda<=12.5 mu m) optical absorption enhancement of textured silicon surfaces coated with an antireflective thin film SO THIN SOLID FILMS LA English DT Article; Proceedings Paper CT 22nd International Conference on Metallurgical Coatings and Thin Films (ICMCTF 1995) CY APR 24-29, 1995 CL SAN DIEGO, CA SP Amer Vacuum Soc, Vacuum Met & Thin Films Div DE silicon; optical properties; solar cells; electrochemistry ID POROUS SILICON; HYDRAZINE AB High-performance solar cells and optical detection devices frequently incorporate microscopic surface texturing and antireflective (AR) thin films to reduce the reflection of incident radiation and, thus, enhance optical absorption. Using conventional electrochemical and single-crystal silicon micromachining techniques, porous silicon (PS) and textured surfaces composed of randomly spaced and sized pyramids (RSSPs) were fabricated and optically characterized over the mid-infrared (2.5 less than or equal to lambda 12.5 mu m) portion of the optical spectrum. The utility of a 1.53+/-0.03 mu m thick yttrium oxide (Y2O3) AR thin film was also investigated in an attempt to enhance optical absorption. The optical measurements were accomplished using a 21 degrees incident illumination angle (measured with respect to the sample's normal) and a Bomem(R) total integrating sphere to quantify the total (specular and diffuse) reflectance (R). A highly-polished, uncoated, single-crystal silicon wafer was used as a reference surface (R(ave)=0.436 with R(sigma)=0.033). The performance of the uncoated PS samples revealed R(ave)=0.205 with R(sigma)=0.078, and the RSSP samples manifested R(ave)=0.090 with R(ave)=0.003. The AR coating significantly improved the performance of the reference and the RSSP textured surfaces: reference sample, R(ave)=0.251 with R(sigma)=0.040; RSSP samples, R(ave)=0.024 with R(ave)=0.017. The AR coating did not improve the mid-infrared optical performance of the PS samples; however, the R characteristics for the 0.5 less than or equal to lambda less than or equal to 2.5 mu m portion of the optical spectrum were reduced by more than 50%. C1 USAF,INST TECHNOL,DEPT ELECT & COMP ENGN,WRIGHT PATTERSON AFB,OH 45433. RP Kolesar, ES (reprint author), TEXAS CHRISTIAN UNIV,DEPT ENGN,2800 S UNIV DR,FT WORTH,TX 76129, USA. NR 15 TC 8 Z9 8 U1 0 U2 5 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0040-6090 J9 THIN SOLID FILMS JI Thin Solid Films PD DEC 1 PY 1995 VL 270 IS 1-2 BP 10 EP 15 DI 10.1016/0040-6090(95)06858-9 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Coatings & Films; Physics, Applied; Physics, Condensed Matter SC Materials Science; Physics GA TM187 UT WOS:A1995TM18700004 ER PT J AU Magyar, KP AF Magyar, KP TI Classifying the international political economy: A Third World proto-theory SO THIRD WORLD QUARTERLY LA English DT Article RP Magyar, KP (reprint author), USAF,AIR COMMAND & STAFF COLL,MAXWELL AFB,AL 36113, USA. NR 16 TC 2 Z9 2 U1 0 U2 0 PU CARFAX PUBL CO PI ABINGDON PA PO BOX 25, ABINGDON, OXFORDSHIRE, ENGLAND OX14 3UE SN 0143-6597 J9 THIRD WORLD Q JI Third World Q. PD DEC PY 1995 VL 16 IS 4 BP 703 EP 716 PG 14 WC Planning & Development SC Public Administration GA TQ204 UT WOS:A1995TQ20400007 ER PT J AU Cavdar, B Sharma, SK John, P AF Cavdar, B Sharma, SK John, P TI Wettability aspects of friction and wear reduction by a fluorinated sulphonamide additive in a chlorotrifluoroethylene-based fluid SO TRIBOLOGY INTERNATIONAL LA English DT Article DE boundary lubrication; wetting; surface tension; thin films; ellipsometry; synthetic lubricants; additives AB Chlorotrifluoroethylene (CTFE) is a non-flammable synthetic material developed as a hydraulic fluid for Air Force systems. The sulphonamide additive is a low surface tension material with a complex molecular structure including several surface active groups. The addition of the sulphonamide additive to the CTFE oil reduced wear on steel specimens by helping in the formation of chemical reaction films on the surfaces. The physical aspects of how this additive helps in the formation of the wear reducing films are discussed. There is evidence that the sulphonamide additive modifies the solid-liquid interface, preventing the spread and loss of CTFE oil over a steel surface. By keeping the CTFE oil close to the interacting asperities, the sulphonamide additive conserves the share of the load carried by the lubricant and makes the CTFE available for the formation of friction and wear reducing surface films containing iron chloride and iron fluoride. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. UNIV DAYTON,RES INST,DAYTON,OH 45469. RP Cavdar, B (reprint author), BORG WARNER AUTOMOT,CTR ADV TECHNOL,LOMBARD,IL 60148, USA. NR 9 TC 2 Z9 2 U1 1 U2 6 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0301-679X J9 TRIBOL INT JI Tribol. Int. PD DEC PY 1995 VL 28 IS 8 BP 501 EP 506 DI 10.1016/0301-679X(96)85537-X PG 6 WC Engineering, Mechanical SC Engineering GA TR742 UT WOS:A1995TR74200001 ER PT J AU COTTON, WR WEAVER, JF BEITLER, BA AF COTTON, WR WEAVER, JF BEITLER, BA TI AN UNUSUAL SUMMERTIME DOWNSLOPE WIND EVENT IN FORT-COLLINS, COLORADO, ON 3 JULY 1993 SO WEATHER AND FORECASTING LA English DT Note AB An unseasonal, severe downslope windstorm along the eastern foothills of the Colorado Rocky Mountains is described. The storm, which occurred on 3 July 1993, produced wind gusts in Fort Collins, Colorado, over 40 m s(-1) and resulted in extensive tree and roof damage. The synoptic pattern preceding the wind event resembled a pattern typical of that for a Front Range late fall or wintertime wind storm, including a strong south-southwest-oriented height gradient at 700 mb and a strong west to east sea level pressure gradient across the Front Range. A particularly interesting facet of the event was that one small geographical area in and near Fort Collins experienced wind gusts nearly 40% stronger than any other location involved in the event. The mesoscale forecast version of the Regional Atmospheric Modeling System (RAMS) with 16-km grid spacing over Colorado was run for the storm. Consistent severe winds were not predicted by the model in this configuration. Increasing resolution in postanalysis to a 4-km grid spacing along the Front Range resulted in severe downslope winds but of too strong a magnitude. The addition of explicit, bulk microphysics moderated the forecast wind strengths to observed magnitudes. That is, bath a grid spacing of similar to 4 km and the use of explicit bulk microphysics were required to produce an accurate representation of the downslope winds observed. C1 NOAA,NESDIS,CSU,CIRA,REG & MESOSCALE METEOROL BRANCH,FT COLLINS,CO. USAF,CTR ENVIRONM TECH APPLICAT,SCOTT AFB,IL. RP COTTON, WR (reprint author), COLORADO STATE UNIV,DEPT ATMOSPHER SCI,FT COLLINS,CO 80523, USA. NR 18 TC 17 Z9 18 U1 0 U2 1 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0882-8156 J9 WEATHER FORECAST JI Weather Forecast. PD DEC PY 1995 VL 10 IS 4 BP 786 EP 797 DI 10.1175/1520-0434(1995)010<0786:AUSDWE>2.0.CO;2 PG 12 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA TJ518 UT WOS:A1995TJ51800009 ER PT J AU TALWAR, DN SHERBONDY, JC AF TALWAR, DN SHERBONDY, JC TI THERMAL-EXPANSION COEFFICIENT OF 3C-SIC SO APPLIED PHYSICS LETTERS LA English DT Article ID PRESSURE-DEPENDENCE; SILICON-CARBIDE; PHONONS; DIAMOND AB Theoretical results for the temperature dependence of the thermal expansion coefficient for 3C-SiC are reported using a phenomenological lattice dynamical theory in the quasiharmonic approximation. The linear thermal expansion coefficient alpha of 3C-SiC exhibits a variation with temperature much like that of the specific heat and, unlike other tetrahedrally coordinated materials, it does not attain a negative value at lower temperatures. (C) 1995 American Institute of Physics. C1 INDIANA UNIV PENN,DEPT PHYS,INDIANA,PA 15705. RP TALWAR, DN (reprint author), WRIGHT LAB,ELRA,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 24 TC 30 Z9 31 U1 2 U2 8 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD NOV 27 PY 1995 VL 67 IS 22 BP 3301 EP 3303 DI 10.1063/1.115227 PG 3 WC Physics, Applied SC Physics GA TF765 UT WOS:A1995TF76500026 ER PT J AU EVWARAYE, AO SMITH, SR MITCHEL, WC AF EVWARAYE, AO SMITH, SR MITCHEL, WC TI DETERMINATION OF THE BAND OFFSETS OF THE 4H-SIC/6H-SIC HETEROJUNCTION USING THE VANADIUM DONOR (O/+) LEVEL AS A REFERENCE SO APPLIED PHYSICS LETTERS LA English DT Article ID IMPURITIES; DEFECTS AB Optical admittance spectroscopy has been used to study defects in 4H-SiC; the vanadium donor level at E(C)-1.73 eV has been identified. The optical admittance spectrum of 4H-SiC is similar to that of 6H-SiC, where the vanadium donor level is at E(C)-1.59 eV. The band gaps of 6H-SiC and 4H-SiC were measured. The values of 3.10+/-0.03 eV for 6H-SiC and 3.41+/-0.03 eV for 4H-SiC are in reasonable agreement with reported values. Using the vanadium donor level in both 4H-SiC and 6H-SiC as a common reference, the band offsets for 6H-SiC/4H-SiC heterojunction are estimated to be Delta E(C)=0.14 eV and Delta E(V)=0.17 eV. (C) 1995 American Institute of Physics. C1 UNIV DAYTON,RES INST,DAYTON,OH 45469. RP EVWARAYE, AO (reprint author), WRIGHT LAB,MAT DIRECTORATE,MLPO,WRIGHT PATTERSON AFB,OH 45433, USA. NR 15 TC 20 Z9 20 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD NOV 27 PY 1995 VL 67 IS 22 BP 3319 EP 3321 DI 10.1063/1.115233 PG 3 WC Physics, Applied SC Physics GA TF765 UT WOS:A1995TF76500032 ER PT J AU BERRY, RJ BURGESS, DRF NYDEN, MR ZACHARIAH, MR AF BERRY, RJ BURGESS, DRF NYDEN, MR ZACHARIAH, MR TI HALON THERMOCHEMISTRY - AB-INITIO CALCULATIONS OF THE ENTHALPIES OF FORMATION OF FLUOROMETHANES SO JOURNAL OF PHYSICAL CHEMISTRY LA English DT Article ID SET CORRELATION ENERGIES; VALENCE BOND MODEL; ELECTRONIC-STRUCTURE; GAUSSIAN-2 THEORY; CHEMISTRY; ATOM; 1ST-ROW AB Atomic equivalent (AEQ), BAC-MP4, G2(MP2), G2, CBS-4, CBS-Q, and CBS-QCI/APNO molecular orbital calculations were used to calculate enthalpies of formation in the series of fluoromethanes, CHxF4-x, x = 0-4. While the computed Delta(f)H degrees(BAC-MP4) and Delta(f)H degrees(CBS-4) were in close agreement with experiment, errors in enthalpies from the other five methods were relatively high. In particular, enthalpies of formation calculated with the G2(MP2) and G2 procedures exhibited systematic deviations from experiment which were linearly dependent upon the number of C-F bonds in the molecule. Application of isodesmic reaction calculations yielded values of Delta(f)H degrees(G2(MP2)), Delta(f)H degrees(G2), Delta(f)H degrees(CBS-Q), and Delta(f)H degrees(CBS-QCI/APNO) that were in remarkably close agreement with experiment. This technique had no significant effect on the quality of results from the AEQ, BAC-MP4, and CBS-4 methods. C1 USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NATL INST STAND & TECHNOL,CHEM SCI & TECHNOL LAB,GAITHERSBURG,MD 20899. NATL INST STAND & TECHNOL,BLDG & FIRE RES LAB,GAITHERSBURG,MD 20899. UNIV N TEXAS,DEPT CHEM,DENTON,TX 76203. NR 43 TC 49 Z9 49 U1 0 U2 2 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-3654 J9 J PHYS CHEM-US JI J. Phys. Chem. PD NOV 23 PY 1995 VL 99 IS 47 BP 17145 EP 17150 DI 10.1021/j100047a017 PG 6 WC Chemistry, Physical SC Chemistry GA TF811 UT WOS:A1995TF81100017 ER PT J AU OVERBECK, JA SALISBURY, MS MARK, MB WATSON, EA AF OVERBECK, JA SALISBURY, MS MARK, MB WATSON, EA TI REQUIRED ENERGY FOR A LASER-RADAR SYSTEM INCORPORATING A FIBER AMPLIFIER OR AN AVALANCHE PHOTODIODE SO APPLIED OPTICS LA English DT Article DE FIBER AMPLIFIERS; AVALANCHE PHOTODIODE; IMAGING; LASER RADAR AB The transmitted energy required for an airborne laser radar system to be able to image a target at 20 km is investigated. Because direct detection is being considered, two methods of enhancing the received signal are discussed: (1) using an avalanche photodiode (APD) as the detector and (2) using a commercial fiber amplifier as a preamplifier before a photodetector. For this analysis a specified signal-to-noise ratio was used in conjunction with the radar range equation, which includes the effects of atmospheric transmission and turbulence. Theoretical analysis reveals that a system with a fiber amplifier performs nearly the same as a system incorporating an APD. C1 USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. RP OVERBECK, JA (reprint author), TECH SCI SERV INC,OVERLOOK BRANCH,POB 3065,DAYTON,OH 45437, USA. NR 8 TC 29 Z9 30 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD NOV 20 PY 1995 VL 34 IS 33 BP 7724 EP 7730 PG 7 WC Optics SC Optics GA TE199 UT WOS:A1995TE19900013 PM 21060654 ER PT J AU SON, M SHAHED, AR WERCHAN, PM LEE, JC AF SON, M SHAHED, AR WERCHAN, PM LEE, JC TI C-FOS AND HSP70 GENE-EXPRESSION IN RAT BRAINS IN HIGH GRAVITATION-INDUCED CEREBRAL-ISCHEMIA SO NEUROSCIENCE LETTERS LA English DT Article DE CEREBRAL ISCHEMIA; LOSS OF CONSCIOUSNESS; GRAVITATION FORCE; C-FOS; HSP70; GENE EXPRESSION ID GERBIL BRAIN; TRANSIENT ISCHEMIA; MESSENGER-RNA; FOREBRAIN ISCHEMIA; NERVOUS-SYSTEM; JUN; INDUCTION; PROTEIN AB Previous studies have shown that brief exposures of rodents to high gravitation forces (+G(z)) in a specifically designed centrifuge cause global cerebral ischemia. In the present study, the effect of +G(z) exposure to +22.5G(z) for 15 to 60 s on c-fos and HSP70 gene expression was examined. Northern and RT-PCR analyses of total RNA isolated from brains of rats at different post-exposure times revealed a significant, time-dependent increase in the c-fos mRNA level which returned to near normal by 180 min. The HSP70 mRNA level was increased two-fold at 30 min post exposure, and remained elevated until 180 min. The transient stimulation of c-fos and HSP70 gene expression should serve as useful biomarkers for hypergravic stress on the brain. The present results should aid in design of future experiments in our understanding of the pathophysiology of the high +G(z) challenges. C1 UNIV TEXAS,HLTH SCI CTR,DEPT BIOCHEM,SAN ANTONIO,TX 78284. OPERAT TECHNOL CORPS,DIV CREW TECHNOL,BROOKS AFB,TX 78235. ARMSTRONG LAB,DIV CREW TECHNOL,BROOKS AFB,TX 78235. NR 27 TC 5 Z9 8 U1 0 U2 1 PU ELSEVIER SCI PUBL IRELAND LTD PI CLARE PA CUSTOMER RELATIONS MANAGER, BAY 15, SHANNON INDUSTRIAL ESTATE CO, CLARE, IRELAND SN 0304-3940 J9 NEUROSCI LETT JI Neurosci. Lett. PD NOV 17 PY 1995 VL 200 IS 2 BP 81 EP 84 DI 10.1016/0304-3940(95)12114-J PG 4 WC Neurosciences SC Neurosciences & Neurology GA TH950 UT WOS:A1995TH95000003 PM 8614568 ER PT J AU WOODARD, DS MEALEY, BL LEAR, CS SATSANGI, RK PRIHODA, TJ WEINTRAUB, ST PINCKARD, RN MCMANUS, LM AF WOODARD, DS MEALEY, BL LEAR, CS SATSANGI, RK PRIHODA, TJ WEINTRAUB, ST PINCKARD, RN MCMANUS, LM TI MOLECULAR HETEROGENEITY OF PAF IN NORMAL HUMAN MIXED SALIVA - QUANTITATIVE MASS-SPECTRAL ANALYSIS AFTER DIRECT DERIVATIZATION OF PAF WITH PENTAFLUOROBENZOIC ANHYDRIDE SO BIOCHIMICA ET BIOPHYSICA ACTA-LIPIDS AND LIPID METABOLISM LA English DT Article DE PLATELET-ACTIVATING FACTOR; PAF; SALIVA; MASS SPECTROMETRY ID PLATELET-ACTIVATING-FACTOR; GLYCERYL ETHER PHOSPHORYLCHOLINE; ALKYL CHAIN HOMOLOGS; ENDOTHELIAL-CELLS; HUMAN-NEUTROPHILS; CHROMATOGRAPHY; SPECTROMETRY; ANALOGS; PHOSPHOLIPIDS; DERIVATIVES AB Platelet-activating factor (PAF), a family of phospholipid autacoids with potent pro-inflammatory activities, is present in saliva. The current study has quantitated various species of PAF isolated from normal human mixed saliva. Choline-containing, sn-2 acetylated phospholipids with sn-1 ether- or ester-linked fatty alcohol/acid moieties (alkyl-PAF or acyl-PAF, respectively) were evaluated after direct derivatization with pentafluorobenzoic (PFB) anhydride. Individual species of PFB-derivatized PAF were separated by gas chromatography prior to mass spectral analysis; quantitative estimates of six different species of PAF in saliva were made by comparison to corresponding authentic, synthetic PAF standards. In each saliva sample, all six species of PAF were readily detected by this facile procedure. The predominant PAF was 1-O-hexadecyl-2-acetyl-sn-glycero-3-phosphocholine or 16:0-alkyl-PAF (0.75 +/- 0.09 pmol/ml saliva; mean +/- S.E.; n = 5) which represented only 30.4 +/- 1.5% of the total PAF. Substantial amounts of 18:1- and 18:0-alkyl-PAF and 16:0-acyl-PAF were also identified (0.52 +/- 0.07, 0.35 +/- 0.06, and 0.35 +/- 0.02 pmol/ml saliva, respectively). In summary, mass spectrometric analysis of PAF after direct derivatization with PFB anhydride has revealed that at least six different species of PAF are present in normal human mixed saliva. This structural diversity may represent an important aspect of homeostasis in the healthy oral cavity. C1 UNIV TEXAS,HLTH SCI CTR,DEPT PATHOL,SAN ANTONIO,TX 78284. UNIV TEXAS,HLTH SCI CTR,DEPT PERIODONT,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT PERIODONT,LACKLAND AFB,TX 78236. FU NHLBI NIH HHS [HL-22555]; NIDCR NIH HHS [DE-08000] NR 60 TC 4 Z9 4 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0005-2760 J9 BBA-LIPID LIPID MET JI Biochim. Biophys. Acta-Lipids Lipid Metab. PD NOV 16 PY 1995 VL 1259 IS 2 BP 137 EP 147 DI 10.1016/0005-2760(95)00127-X PG 11 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA TF730 UT WOS:A1995TF73000002 PM 7488633 ER PT J AU Kralovics, R Tze, L Guan, Y Broxson, E Sokol, L Prchal, JT AF Kralovics, R Tze, L Guan, Y Broxson, E Sokol, L Prchal, JT TI Absence of linkage between polycythemia phenotype and EPO receptor mutation in a large polycythemic family. SO BLOOD LA English DT Meeting Abstract C1 UNIV ALABAMA,DIV HEMATOL ONCOL,BIRMINGHAM,AL 35294. USAF,WRIGHT PATTERSON AFB,OH 45433. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 60 EP 60 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91000060 ER PT J AU Brown, RL Xu, FS Li, Q Fischer, R Dusing, S AF Brown, RL Xu, FS Li, Q Fischer, R Dusing, S TI Long-term survival of lethally irradiated mice using ex vivo cultured hematopoietic cells. SO BLOOD LA English DT Meeting Abstract C1 QUAL BIOL INC,GAITHERSBURG,MD. USAF,RADIOBIOL RES INST,BETHESDA,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 432 EP 432 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91000434 ER PT J AU Lewis, S Halvorson, R Thompson, J Schroeder, M Callander, N AF Lewis, S Halvorson, R Thompson, J Schroeder, M Callander, N TI Novel approach to relapsed acute myelogenous leukemia (AML) following bone marrow transplantation (BMT). SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 2247 EP 2247 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91002248 ER PT J AU Hall, RB Dunn, CD Hickman, JR McDonald, KD Rodriguez, AJ Allerton, JP AF Hall, RB Dunn, CD Hickman, JR McDonald, KD Rodriguez, AJ Allerton, JP TI Evaluation of a slide spinner technique for the preparation of bone marrow aspirate smears. SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,DEPT PATHOL & HEMATOL ONCOL,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 3242 EP 3242 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91003243 ER PT J AU Raybon, K Schroeder, M Allerton, J AF Raybon, K Schroeder, M Allerton, J TI Increased dose intensity (DI) of doxorubicin and vinblastine during ABVD therapy of Hodgkin's lymphoma with the use of granulocyte colony stimulating factor (GCSF). SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 3270 EP 3270 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91003271 ER PT J AU McGlasson, DL Best, HA Hickman, JR AF McGlasson, DL Best, HA Hickman, JR TI Rapid removal of platelets from plasma using the Hepchek Heparin Removal Filter SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,CLIN INVEST DIRECTORATE,LACKLAND AFB,TX 78236. WILFORD HALL USAF MED CTR,HEMATOL LAB,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 3512 EP 3512 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91003513 ER PT J AU Raybon, K Thomas, A Schroeder, M Lewis, S Christman, K Wilks, S Osswald, M Abbott, K Halvorson, R Essell, J Allerton, J AF Raybon, K Thomas, A Schroeder, M Lewis, S Christman, K Wilks, S Osswald, M Abbott, K Halvorson, R Essell, J Allerton, J TI Bone marrow transplantation (BMT) in multiple myeloma (MM) with busulfan (BU) and cyclophosphamide (CY): Unacceptable toxicity with standard dose in heavily pretreated patients. SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 3833 EP 3833 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91003833 ER PT J AU Shaughnessy, P Lewis, S Schroeder, M Allerton, J Wilks, S Christman, K Osswald, M Abbott, K Harmon, G Halvorson, R Snyder, M Callander, N AF Shaughnessy, P Lewis, S Schroeder, M Allerton, J Wilks, S Christman, K Osswald, M Abbott, K Harmon, G Halvorson, R Snyder, M Callander, N TI Bone marrow transplantation for patients with severe aplastic anemia using cyclophosphamide and antithymocyte globulin (ATG). SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 3849 EP 3849 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91003849 ER PT J AU Turner, D Schroeder, M Essell, J Allerton, J AF Turner, D Schroeder, M Essell, J Allerton, J TI Sonographic findings in patients with hepatic veno-occlusive disease. SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 3867 EP 3867 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91003867 ER PT J AU Osswald, M Davis, H Allerton, J Halvorsen, R AF Osswald, M Davis, H Allerton, J Halvorsen, R TI A study of midcounts as predictors of final yield during the harvest of bone marrow for transplantation SO BLOOD LA English DT Meeting Abstract C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 3947 EP 3947 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91003947 ER PT J AU Pickard, SM Miracle, DB AF Pickard, SM Miracle, DB TI An experimental study of residual stresses in SiC-fiber-reinforced Ti-based composites SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE residual stresses; SiC fibers; Ti-based composites ID METAL MATRIX COMPOSITES; REACTION ZONE; DEFORMATION; FRACTURE AB Composites of two Ti-based alloys (Ti-14Al-21Nb and Ti-6Al-4V (weight per cent)) containing SCS-6 SiC fibers have been characterized microstructurally and are used as model systems in which to study the influence of fiber volume fraction and post-consolidation deformation on residual axial fiber strains. The magnitude and extent of local chemical strengthening of the matrix due to interstitial C diffusion have also been measured. A novel matrix etching technique was used to measure the axial fiber residual stress in the composites, and analysis of electron backscattered channeling patterns was employed as a qualitative means of measuring the extent of the local plastic yielding in the matrix. The measured fiber residual strain was found to depend on fiber volume fraction and was reduced significantly by the application of a mechanical load in excess of the matrix yield stress. Significant fiber-to-fiber variation in axial residual strain is measured in the (Ti-14Al-21Nb)-SiC composite, and this variation is discussed with respect to contributions from variations in local fiber volume fractions (i.e. fiber spacing), matrix plasticity, and fiber bending resulting from the cross-weave process. In general, measurements of elastic residual fiber strains are in good agreement with analytical model predictions. C1 SYSTRAN CORP,DAYTON,OH 45432. USAF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433. NR 22 TC 15 Z9 15 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD NOV 15 PY 1995 VL 203 IS 1-2 BP 59 EP 68 DI 10.1016/0921-5093(95)09829-1 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TM628 UT WOS:A1995TM62800006 ER PT J AU LO, IK WANG, DP HSIEH, KY WANG, TF MITCHEL, WC AHOUJJA, M CHENG, JP FATHIMULLA, A HIER, H AF LO, IK WANG, DP HSIEH, KY WANG, TF MITCHEL, WC AHOUJJA, M CHENG, JP FATHIMULLA, A HIER, H TI PERSISTENT-PHOTOCONDUCTIVITY EFFECT IN DELTA-DOPED AL0.48IN0.52AS/GA0.47IN0.53AS HETEROSTRUCTURES SO PHYSICAL REVIEW B LA English DT Article ID MOLECULAR-BEAM EPITAXY; QUANTUM-WELLS; DEEP LEVELS; DX CENTERS; MODEL; SEMICONDUCTORS; ALXGA1-XAS AB We have studied the electronic properties of delta-doped Al0.48In0.52As/Ga0.47In0.53As heterostructure samples by Shubnikov-de Haas and quantum-Hall-effect measurements. The well-defined two-subband occupied two-dimensional electron gas was detected. From the Fermi level at these two subbands, we calculate the energy difference between the lowest two subbands' minima to be 54 meV. After illuminating the sample at low temperature, we did observe a persistent photoconductivity. The electron densities of the first and second subbands for the sample with preannealed substrate were increased by the illumination from 17.3 to 18.2X10(11) cm(-2) and 3.6 to 4.1X10(11) cm(-2), respectively. The onset of the second subband occurs at n(0)=10.3X10(11) cm(-2). We also found that the concentration of deep donor traps is about 1.4X10(11) cm(-2) and the deep donor traps are not affected by the preannealed substrate. We believe that the model to describe the persistent-photoconductivity effect in semiconductor heterostructure samples needs to be extended to those deep donor levels below Fermi energy and it does not have to be the DX center. C1 NATL SUN YAT SEN UNIV,INST MAT SCI,KAOHSIUNG 80424,TAIWAN. USAF,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. MIT,FRANCIS BITTER NATL MAGNET LAB,CAMBRIDGE,MA 02139. ALLIED SIGNAL AEROSP CO,CTR MICROELECTR & TECHNOL,COLUMBIA,MD 21045. RP LO, IK (reprint author), NATL SUN YAT SEN UNIV,DEPT PHYS,KAOHSIUNG 80424,TAIWAN. NR 32 TC 15 Z9 15 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD NOV 15 PY 1995 VL 52 IS 20 BP 14671 EP 14676 DI 10.1103/PhysRevB.52.14671 PG 6 WC Physics, Condensed Matter SC Physics GA TH682 UT WOS:A1995TH68200057 ER PT J AU PINNICK, RG HILL, SC NACHMAN, P PENDLETON, JD FERNANDEZ, GL MAYO, MW BRUNO, JG AF PINNICK, RG HILL, SC NACHMAN, P PENDLETON, JD FERNANDEZ, GL MAYO, MW BRUNO, JG TI FLUORESCENCE PARTICLE COUNTER FOR DETECTING AIRBORNE BACTERIA AND OTHER BIOLOGICAL PARTICLES SO AEROSOL SCIENCE AND TECHNOLOGY LA English DT Article ID PROTEIN TRYPTOPHAN FLUORESCENCE; STEADY-STATE; DECAY CHARACTERISTICS; UNITED-STATES; AEROSOL; DISTRIBUTIONS; SCATTERING AB We have constructed a laser-based particle counter that detects the fluorescence, as well as the elastic scattering, from individual airborne particles as they traverse a laser beam. This fluorescence particle counter (FPC) can detect fluorescence from mu m-sized Bacillus subtilis spore agglomerates when illuminated with intense light at 488 nm from an argon ion laser, either similar to 0.7 kW cm(-2) extracavity or similar to 50 kW cm(-2) intracavity. We suspect that flavins in the spores are the molecules primarily responsible for the fluorescence, because the peak fluorescence emission of the biological materials at this excitation wavelength is in the range 530-550 nm, which is characteristic of flavins. Fluorescence form kaolin, hematite, and polystyrene particles was not detectable, the lack of fluorescence indicates that the FPC may be able to differentiate between biological and nonbiological aerosols. The FPC samples aerosol-laden air at a rate of similar to 1 mL s(-1), and is capable of measuring aerosol concentrations up to several thousand per milliliter. The FPC may be helpful in detecting and characterizing airborne bacteria and other airborne particles of biological origin. C1 NEW MEXICO STATE UNIV,DEPT PHYS,LAS CRUCES,NM 88003. USAF,ARMSTRONG LAB,EDGEWOOD RES DEV & ENGN CTR,ABERDEEN PROVING GROUND,MD 21010. RP PINNICK, RG (reprint author), USA,RES LAB,WHITE SANDS MISSILE RANGE,NM 88002, USA. NR 39 TC 83 Z9 84 U1 3 U2 13 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0278-6826 J9 AEROSOL SCI TECH JI Aerosol Sci. Technol. PD NOV PY 1995 VL 23 IS 4 BP 653 EP 664 DI 10.1080/02786829508965345 PG 12 WC Engineering, Chemical; Engineering, Mechanical; Environmental Sciences; Meteorology & Atmospheric Sciences SC Engineering; Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA TJ874 UT WOS:A1995TJ87400015 ER PT J AU AFTOSMIS, M GAITONDE, D TAVARES, TS AF AFTOSMIS, M GAITONDE, D TAVARES, TS TI BEHAVIOR OF LINEAR RECONSTRUCTION TECHNIQUES ON UNSTRUCTURED MESHES SO AIAA JOURNAL LA English DT Article ID HYPERBOLIC CONSERVATION-LAWS AB This paper presents an assessment of a variety of reconstruction schemes on meshes with both quadrilateral and triangular tessellations, The investigations measure the order of accuracy, absolute error, and convergence properties associated with each method. Linear reconstruction approaches using both Green-Gauss and least-squares gradient estimation are evaluated against a structured MUSCL scheme wherever possible, In addition to examining the influence of polygon degree and reconstruction strategy, results with three limiters are examined and compared against unlimited results when feasible. The methods are applied on quadrilateral, right triangular, and equilateral triangular elements to facilitate an examination of the scheme's behavior on a variety of element shapes. The numerical test cases include feell-noown internal and external inviscid examples and also a supersonic vortex problem for which there exists a closed-form solution to the two-dimensional compressible Euler equations. Such investigations indicate that the least-squares gradient estimation provides significantly more reliable results on poor quality meshes. Furthermore, limiting only the face normal component of the gradient can significantly increase both accuracy and convergence while still preserving the integral cell average and maintaining monoticity. The first-order method performs poorly on stretched triangular meshes, and analysis shows that such meshes result in poorly aligned left and right states for the Riemann problem. The higher average valence of a vertex in the triangular tesselations does not appear to enhance the wave propagation, accuracy, or convergence properties of the method. Typically, quadrilateral elements provide superior or equivalent discrete solutions with approximately 50% fewer edges in the domain two-dimensional. However, on very poor quality meshes, the triangular elements routinely yield superior accuracy as a result of the trapezoidal quadrature of the Galerkin portion of the numerical flux function. C1 USAF,WRIGHT AERONAUT LABS,WRIGHT PATTERSON AFB,OH 45433. NR 21 TC 39 Z9 42 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD NOV PY 1995 VL 33 IS 11 BP 2038 EP 2049 DI 10.2514/3.12945 PG 12 WC Engineering, Aerospace SC Engineering GA TD729 UT WOS:A1995TD72900007 ER PT J AU BOWERSOX, RDW SCHETZ, JA AF BOWERSOX, RDW SCHETZ, JA TI MEASUREMENTS OF COMPRESSIBLE TURBULENT-FLOW STRUCTURE IN A SUPERSONIC MIXING LAYER SO AIAA JOURNAL LA English DT Article ID SHEAR FLOWS AB Multiple overheat cross-wire, parallel hot-wire, shadowgraph image processing and high-frequency response pitot probe surveys were taken in a two-dimensional, adiabatic, supersonic, free mixing layer, consisting of Mach 1.8 air (Re = 7 x 10(6)/m) injected tangentially into a Mach 4.0 freestream (Re = 67 x 10(6)/m). Mass flux turbulence intensity profiles in three dimensions were acquired, and the axial component was found to be about 25% larger than the transverse and spanwise components. Mean Favre-averaged velocity fluctuation data indicated that the axial component was negative, while both the transverse and span were positive. Turbulent flow structure angles and length scales were measured in the fully developed region of the how The structure angles were found to be consistent with previous compressible boundary layer results; however, the magnitude here was found to decrease across the mixing layer Mach number fluctuation levels were also measured. The peak Mach number fluctuation level in this bow was about 10%. C1 USAF,DEPT AEROSP & OCEAN ENGN,WRIGHT PATTERSON AFB,OH 45433. RP BOWERSOX, RDW (reprint author), USAF,DEPT AERONAUT & ASTRONAUT ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 3 Z9 3 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD NOV PY 1995 VL 33 IS 11 BP 2101 EP 2106 DI 10.2514/3.12953 PG 6 WC Engineering, Aerospace SC Engineering GA TD729 UT WOS:A1995TD72900015 ER PT J AU MCMACKIN, L MASSON, B CLARK, N BISHOP, K PIERSON, R CHEN, E AF MCMACKIN, L MASSON, B CLARK, N BISHOP, K PIERSON, R CHEN, E TI HARTMANN WAVE-FRONT SENSOR STUDIES OF DYNAMIC ORGANIZED STRUCTURE IN FLOWFIELDS SO AIAA JOURNAL LA English DT Article ID OPTICAL TOMOGRAPHY; COMPUTED-TOMOGRAPHY; FLOW VISUALIZATION; LAYER AB In this paper, the results of an investigation of a one-dimensional Shack-Hartmann wave front sensor are presented for measurement of an optical wave front after passage through a round low-speed jet. The sensor has a linescan rate of 2.2 kHz that resolves the passing vortical features of the developing jet flow. After a brief summary of the principles of Hartmann sensing, results of an experimental determination of the sensitivity limits of our particular wave front sensor are presented. Noise sources in Hartmann sensing are then reviewed, and results of a simulation are presented to show the influence of noise on the resolution limits of the Hartmann sensor. The relevance of the simulation results to the design of a 2.2-kHz, multiview, tomographic system based on Hartmann sensing is also discussed. C1 APPL TECHNOL ASSOCIATES INC,ALBUQUERQUE,NM 87117. RP MCMACKIN, L (reprint author), USAF,PHILLIPS LAB,DIV ADV IMAGING,IMAGING TECHNOL BRANCH,KIRTLAND AFB,NM 87117, USA. NR 30 TC 26 Z9 26 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD NOV PY 1995 VL 33 IS 11 BP 2158 EP 2164 DI 10.2514/3.12961 PG 7 WC Engineering, Aerospace SC Engineering GA TD729 UT WOS:A1995TD72900023 ER PT J AU SCHUTZ, SM AF SCHUTZ, SM TI PATIENT TOLERANCE - AN IMPORTANT FACTOR OF DISSATISFACTION FOR COLONOSCOPY - RESPONSE SO AMERICAN JOURNAL OF GASTROENTEROLOGY LA English DT Letter RP SCHUTZ, SM (reprint author), PSMG,WILFORD HALL USAF MED CTR,DEPT GASTROENTEROL,LACKLAND AFB,TX 78236, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0002-9270 J9 AM J GASTROENTEROL JI Am. J. Gastroenterol. PD NOV PY 1995 VL 90 IS 11 BP 2069 EP 2069 PG 1 WC Gastroenterology & Hepatology SC Gastroenterology & Hepatology GA TC868 UT WOS:A1995TC86800047 ER PT J AU LAVINE, BK MAYFIELD, H KROMANN, PR FARUQUE, A AF LAVINE, BK MAYFIELD, H KROMANN, PR FARUQUE, A TI SOURCE IDENTIFICATION OF UNDERGROUND FUEL SPILLS BY PATTERN-RECOGNITION ANALYSIS OF HIGH-SPEED GAS CHROMATOGRAMS SO ANALYTICAL CHEMISTRY LA English DT Article ID COMPONENTS; MODELS AB Pattern recognition methods have been used to classify high-speed gas chromatograms of weathered and unweathered jet fuels, A total of 228 neat jet fuel samples representing common aviation fuels sold in the United States were characterized by 85-peak gas chromatograms, Discriminants were developed by parametric and nonparametric pattern recognition procedures that correctly classified the gas chromatograms of neat jet fuels according to fuel type (JP-4, Jet-A, JP-7, JPTS, or JP-5), and these discriminant functions were successfully used to classify gas chromatograms of jet fuels which had undergone weathering in a subsurface environment. This approach for identification of weathered fuels was taken because the physical and chemical interactions of jet fuel components with the subsurface environment are not yet fully understood. C1 EQ,AL,TYNDALL AFB,FL 32403. RP LAVINE, BK (reprint author), CLARKSON UNIV,DEPT CHEM,BOX 5810,POTSDAM,NY 13699, USA. NR 26 TC 43 Z9 45 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD NOV 1 PY 1995 VL 67 IS 21 BP 3846 EP 3852 DI 10.1021/ac00117a005 PG 7 WC Chemistry, Analytical SC Chemistry GA TC809 UT WOS:A1995TC80900010 ER PT J AU BURROWS, MD BORMANN, F ANDRESEN, P AF BURROWS, MD BORMANN, F ANDRESEN, P TI TUNABLE, SUBNANOSECOND KRF-RAMAN LASER IN THE ULTRAVIOLET SO APPLIED PHYSICS B-LASERS AND OPTICS LA English DT Article ID ATMOSPHERIC-PRESSURE FLAMES; ROTATIONAL ENERGY-TRANSFER; EXCIMER LASERS; OH A2-SIGMA+; AMPLIFIER; FLUORESCENCE; LIFETIMES; PULSES; STATE AB A 0.5 cm(-1) bandwidth injection-locked KrF laser pumps a rare-gas Brillouin cell to produce a reflected pulse with a leading edge risetime of 1 ns, tunable from 248.1 to 248.7 nm. Consistent with Lamb theory of laser amplifiers, subsequent excimer amplification of this pulse produces an intense 500 ps spike on the pulse leading edge. Stimulated Raman scattering then separates the spike from the parent pulse, yielding a tunable short pulse at the first Stokes (S-1) wavelength. Varying the Raman cell length results in a variable Raman threshold and an adjustable short pulse duration: 250 ps pulses at energies of 3-4 mJ at 268 nm with a 50 cm methane cell and 350 ps, 5 mJ pulses from a 100 cm cell are measured with a streak camera. First pass Raman conversion of the spike to S-1 followed by second pass backward Raman amplification, where the parent 248 nm pulse serves as the pump beam for the reflected S-1 pulse, yields simultaneous S-1 pulses of 20-25 mJ in the 800 ps range and S-2 pulses of 550 ps at 5-6 mJ near 290 nm. This laser will avoid collision effects during laser excitation and enable quantitative, single pulse imaging of OH radicals in turbulent combustion because of its high pulse energy. C1 UNIV BIELEFELD,FAK PHYS,D-33501 BIELEFELD,GERMANY. RP BURROWS, MD (reprint author), POSF,WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 26 TC 6 Z9 6 U1 1 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0946-2171 J9 APPL PHYS B-LASERS O JI Appl. Phys. B-Lasers Opt. PD NOV PY 1995 VL 61 IS 5 BP 451 EP 460 DI 10.1007/BF01081273 PG 10 WC Optics; Physics, Applied SC Optics; Physics GA TC529 UT WOS:A1995TC52900006 ER PT J AU SABOE, GW SLAUSON, JW JOHNSON, R LOECKER, TH AF SABOE, GW SLAUSON, JW JOHNSON, R LOECKER, TH TI THE AEROMEDICAL RISK ASSOCIATED WITH ASYMPTOMATIC CHOLELITHIASIS IN USAF PILOTS AND NAVIGATORS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID NATURAL-HISTORY; GALLSTONES AB Background: The U.S. Air Force (USAF) aeromedical policy regarding incidentally discovered, asymptomatic cholelithiasis required the aircrew to undergo cholecystectomy prior to being considered for return to flying duties. Hypothesis: The merit of continuing this USAF policy was evaluated at the request of the U.S. Air Force Surgeon General. Methods: A medical literature review of the natural history of cholelithiasis in the general population was completed. The USAF aircrew waiver file (1972-92) and the Ellingson Aerospace Medicine Consultation Service (ACS) data file (1955-92) were reviewed for cases of USAF pilots and navigators with a diagnosis of cholelithiasis or cholecystectomy. Pilot and navigator annual manpower data were obtained from the Air Force Military Personnel Center (1972-92) and used in calculations involving the USAF aircrew waiver file. Surgical morbidity and mortality information was obtained from the Division of Surgery, Wilford Hall Medical Center. Results: Literature review predicted a 1-4% annual rate of acute events in individuals with previous asymptomatic cholelithiasis. Based on KUB radiographs taken at ACS, the prevalence of asymptomatic cholelithiasis in USAF pilots and navigators was estimated to be 23%. Of 11,685 pilots and navigators evaluated at the ACS, 80 (0.7%) were diagnosed with cholelithiasis or cholecystectomy. Between 1972 and 1992, an estimated 16,232 man-years of pilot/navigator exposure to asymptomatic cholelithiasis occurred; however, only 50 cases with a diagnosis of cholecystectomy or cholelithiasis were reported in the USAF waiver file. Mortality and morbidity for cholecystectomy, whether performed by open or laparoscopic technique, were reported as 0.2% and 5%, respectively, in the general population. Conclusion: The overall incidence of acute cholecystitis within USAF aircrew would not be changed by aeromedical cholecystectomy being performed on aviators with incidentally detected asymptomatic cholelithiasis. RP SABOE, GW (reprint author), ARMSTRONG LAB,AEROSP MED DIRECTORATE,DIV CLIN SCI,PROFESS SERV,AL AOC,2507 KENNEDY CIRCLE,BROOKS AFB,TX 78235, USA. NR 9 TC 3 Z9 3 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1995 VL 66 IS 11 BP 1086 EP 1089 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA TB335 UT WOS:A1995TB33500010 PM 8588799 ER PT J AU PREVIC, FH YAUCH, DW DEVILBISS, CA ERCOLINE, WR SIPES, WE AF PREVIC, FH YAUCH, DW DEVILBISS, CA ERCOLINE, WR SIPES, WE TI IN DEFENSE OF TRADITIONAL VIEWS OF SPATIAL DISORIENTATION AND LOSS OF SITUATION AWARENESS - A REPLY TO NAVATHE AND SINGHS AN OPERATIONAL DEFINITION OF SPATIAL DISORIENTATION SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID ILLUSION AB In a recent article in Aviation, Space, and Environmental Medicine, Navathe and Singh proposed new ''operational'' definitions for spatial disorientation (SD) and loss of situation(al) awareness (LSA). The major feature of their new scheme was to tret the two phenomena as distinct, with SD attributable to physiologically based (peripheral) illusions and LSA to psychological (central) factors. The present commentary argues in favor of traditional views of SD that consider spatial orientation to be a subset of overall situation awareness. C1 KRUG,DIV LIFE SCI,SAN ANTONIO,TX. RP PREVIC, FH (reprint author), ARMSTRONG LAB,CFTF,2504 GILLINGHAM DR STE 25,BROOKS AFB,TX 78235, USA. NR 13 TC 2 Z9 2 U1 0 U2 1 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1995 VL 66 IS 11 BP 1103 EP 1106 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA TB335 UT WOS:A1995TB33500014 PM 8588803 ER PT J AU SCHMIDT, JV AF SCHMIDT, JV TI FLIGHT NURSE TRAINING A WASTE OF TIME - NEVER SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article RP SCHMIDT, JV (reprint author), AETC,SGN,61 MAIN CIRCLE STE 2,RANDOLPH AFB,TX 78150, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD NOV PY 1995 VL 66 IS 11 BP 1116 EP 1117 PG 2 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA TB335 UT WOS:A1995TB33500016 ER PT J AU GVISHI, R BHAWALKAR, JD KUMAR, ND RULAND, G NARANG, U PRASAD, PN REINHARDT, BA AF GVISHI, R BHAWALKAR, JD KUMAR, ND RULAND, G NARANG, U PRASAD, PN REINHARDT, BA TI MULTIPHASIC NANOSTRUCTURED COMPOSITES FOR PHOTONICS - FULLERENE-DOPED MONOLITH GLASS SO CHEMISTRY OF MATERIALS LA English DT Article ID C-60; ABSORPTION; C-70; FLUORESCENCE AB We present the preparation of novel multifunctional nanostructured composite materials using the sol-gel process. We have demonstrated the doping of two optical limiting organic molecules (C-60 and bisbenzothiazole 3,4-didecyloxythiophene (BBTDOT)) in a single bulk while maintained the optical limiting effect at each of their characteristic wavelengths. A multiphasic composite glass doped with both C-60 and BBTDOT exhibited effective optical power limiting at 532 and 800 nm due to independent limiting effects at each wavelength generated by each of the two dopants. These composite glasses have excellent optical quality (loss approximate to 1 dB/m) and a large bulk size. By using our methodology, it is possible to dope two (or more) different optically responsive materials, each of which will reside in different phases of the matrix to make multifunctional nanostructured bulk materials for photonic applications. C1 SUNY BUFFALO,DEPT CHEM,PHOTON RES LAB,BUFFALO,NY 14260. USAF,WRIGHT LAB,MAT DIRECTORATE,POLYMER BRANCH,WRIGHT PATTERSON AFB,OH 45433. NR 30 TC 60 Z9 60 U1 0 U2 4 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0897-4756 J9 CHEM MATER JI Chem. Mat. PD NOV PY 1995 VL 7 IS 11 BP 2199 EP 2202 DI 10.1021/cm00059a031 PG 4 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA TF115 UT WOS:A1995TF11500031 ER PT J AU MORENO, F GROTA, P CRISP, C MAGNON, K MELCHER, GP JORGENSEN, JH PATTERSON, JE AF MORENO, F GROTA, P CRISP, C MAGNON, K MELCHER, GP JORGENSEN, JH PATTERSON, JE TI CLINICAL AND MOLECULAR EPIDEMIOLOGY OF VANCOMYCIN-RESISTANT ENTEROCOCCUS-FAECIUM DURING ITS EMERGENCE IN A CITY IN SOUTHERN TEXAS SO CLINICAL INFECTIOUS DISEASES LA English DT Article AB During a 19-month period from April 1993 to October 1994, 41 isolates of vancomycin-resistant Enterococcus faecium (VREF) were detected in seven different hospitals in a city in southern Texas. A case-control study to determine the risk factors for acquisition was done in the hospital in which the majority of isolates were detected. Pulsed-field gel electrophoresis (PFGE) of whole-cell DNA was used to determine strain identity. Thirty-five (85%) of the 41 VREF isolates were of the vanB phenotype. Of these, 32 (91%) of 35 were the same strain by PFGE typing. The same vanB strain was documented in five different hospitals in the city. In contrast, 4 (67%) of 6 of the vanA phenotype VREF isolates were distinct strains by PFGE typing. Significant risk factors for colonization or infection with VREF were prior exposure to antibiotics (P=.04), the previous use of third-generation cephalosporins (P=.03), and the previous use of parenteral vancomycin (P=.002). Infection-control and antibiotic-utilization measures were implemented to control cross-transmission and selection of VREF isolates. During the emergence of VREF in our city, clonal dissemination of a single strain of vanB VREF among six hospitals was documented. Limited cross-transmission of vanA phenotype VREF isolates occurred, but most vanA VREF isolates were distinct strains selected in individual hospital environments. C1 UNIV TEXAS,AUDIE L MURPHY MEM VET HOSP,HLTH SCI CTR,DEPT MED,SAN ANTONIO,TX 78284. UNIV TEXAS,AUDIE L MURPHY MEM VET HOSP,HLTH SCI CTR,DEPT PATHOL,SAN ANTONIO,TX 78284. BAPTIST MEM HOSP,SAN ANTONIO,TX. WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. NR 12 TC 100 Z9 100 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 1058-4838 J9 CLIN INFECT DIS JI Clin. Infect. Dis. PD NOV PY 1995 VL 21 IS 5 BP 1234 EP 1237 DI 10.1093/clinids/21.5.1234 PG 4 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA TC172 UT WOS:A1995TC17200025 PM 8589148 ER PT J AU MEFFERT, JJ DAVIS, BM CAMPBELL, JC AF MEFFERT, JJ DAVIS, BM CAMPBELL, JC TI BULLOUS DRUG ERUPTION TO GRISEOFULVIN IN A MAN WITH HAILEY-HAILEY DISEASE SO CUTIS LA English DT Article ID BENIGN FAMILIAL PEMPHIGUS AB Hailey-Hailey disease (chronic benign familial pemphigus) is a blistering disease characterized by episodic maceration and erosions in areas subject to friction and trauma such as the neck, axilla, and other intertriginous areas, We report a case in which a griseofulvin-induced drug eruption led to a generalized vesiculobullous eruption requiring treatment in a burn treatment center, This emphasizes that Hailey-Hailey disease, usually confined to relatively small areas, has the potential to cause blistering throughout the epidermis under certain conditions. C1 WILFORD HALL USAF MED CTR,DEPT DERMATOL,LACKLAND AFB,TX. NR 9 TC 2 Z9 2 U1 0 U2 0 PU EXCERPTA MEDICA INC PI BELLE MEAD PA 105 RAIDER BLVD, BELLE MEAD, NJ 08502 SN 0011-4162 J9 CUTIS JI Cutis PD NOV PY 1995 VL 56 IS 5 BP 279 EP 280 PG 2 WC Dermatology SC Dermatology GA TF332 UT WOS:A1995TF33200008 PM 8565613 ER PT J AU LIPSCOMB, JC MAHLE, DA BRASHEAR, WT BARTON, HA AF LIPSCOMB, JC MAHLE, DA BRASHEAR, WT BARTON, HA TI DICHLOROACETIC ACID - METABOLISM IN CYTOSOL SO DRUG METABOLISM AND DISPOSITION LA English DT Article ID TRICHLOROETHYLENE; TETRACHLOROETHYLENE; RATS; MICE; TRICHLOROACETATE; EXPOSURE; INVIVO AB Dichloroacetic acid (DCA) arises from the chlorination of drinking water and the metabolism of trichloroethylene (TRI) and is used therapeutically. The toxicity of TRI exposure is dependent on metabolism, and DCA has been proposed to be one contributor to this toxicity. Beyond the identification of some metabolites of DCA and some pharmacokinetic studies, little is known about the tissue distribution and enzymology of DCA metabolism. We present data that indicate that DCA degradation occurs primarily in the cytosol. Low molecular weight components of cytosol are required for the reaction, including nicotinamide cofactor and glutathione (GSH). GSH plays a role in the removal of DCA from cytosol, although not through transferase-mediated conjugation. In rat cytosol, the K-M is approximately 0.3 mM, and the apparent V-max approximates 12 nmoles/min/mg cytosolic protein. These results set DCA apart from other chlorinated compounds that are metabolized by the cytochrome P450 enzyme family. RP LIPSCOMB, JC (reprint author), USAF,MED CTR,HSC,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV TOXICOL,A,2856 G ST,WRIGHT PATTERSON AFB,OH 45433, USA. NR 23 TC 28 Z9 28 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0090-9556 J9 DRUG METAB DISPOS JI Drug Metab. Dispos. PD NOV PY 1995 VL 23 IS 11 BP 1202 EP 1205 PG 4 WC Pharmacology & Pharmacy SC Pharmacology & Pharmacy GA TE664 UT WOS:A1995TE66400004 PM 8591719 ER PT J AU BURRIS, DR CAMPBELL, TJ MANORANJAN, VS AF BURRIS, DR CAMPBELL, TJ MANORANJAN, VS TI SORPTION OF TRICHLOROETHYLENE AND TETRACHLOROETHYLENE IN A BATCH REACTIVE METALLIC IRON-WATER SYSTEM SO ENVIRONMENTAL SCIENCE & TECHNOLOGY LA English DT Article AB Sorption and reduction kinetics of trichloroethylene (ICE) and tetrachloroethylene (PCE) with metallic (zero-valent) iron were determined in a closed, well-mixed, anaerobic batch system by measuring aqueous and total system concentrations of the respective chlorinated solvent as a function of time. The reaction orders with respect to TCE and PCE total system concentrations were 2.7 and 1.3, respectively, indicating that the reaction mechanisms are complex. Both compounds exhibited nonlinear sorption behavior and could be fitted by the generalized Langmuir isotherm expression. After accounting for the mass sorbed to the iron, the reduction rates of PCE and TCE are first-order. This indicates that the bulk of sorption is to nonreactive sites. Competitive sorption was observed when both PCE and TCE were present; however, no competition for reaction was detected. The design and study of treatment systems for chlorinated solvents using metallic iron requires consideration of sorption processes. C1 APPL RES ASSOCIATES INC,TYNDALL AFB,FL 32403. WASHINGTON STATE UNIV,DEPT PURE & APPL MATH,PULLMAN,WA 99164. RP BURRIS, DR (reprint author), ARMSTRONG LAB,AL EQC,139 BARNES DR,TYNDALL AFB,FL 32403, USA. NR 9 TC 216 Z9 226 U1 2 U2 41 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0013-936X J9 ENVIRON SCI TECHNOL JI Environ. Sci. Technol. PD NOV PY 1995 VL 29 IS 11 BP 2850 EP 2855 DI 10.1021/es00011a022 PG 6 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA TC856 UT WOS:A1995TC85600040 PM 22206534 ER PT J AU ERVIN, J MURAWSKI, C MACARTHUR, C CHYU, M BIZZAK, D AF ERVIN, J MURAWSKI, C MACARTHUR, C CHYU, M BIZZAK, D TI TEMPERATURE-MEASUREMENT OF A CURVED SURFACE USING THERMOGRAPHIC PHOSPHORS SO EXPERIMENTAL THERMAL AND FLUID SCIENCE LA English DT Article DE THERMOGRAPHIC PHOSPHOR; SURFACE TEMPERATURE MEASUREMENT; CURVED SURFACE ID FLUORESCENCE; SENSOR AB An optical technique for surface temperature measurement based on the fluorescent emission of rare earth ion-doped phosphors was demonstrated in an experiment with a heated cylinder in crossflow. In this experiment, a uniform heat flux was imposed by applying a constant voltage across the thin stainless steel cylinder surface to produce surface temperatures between 24 degrees C and 55 degrees C. The fluorescent emission of a thermographic phosphor, lanthanum oxysulfide doped with europium (La2O2S:Eu3+) deposited on the surface, was recorded to determine the temperature distribution at the curved surface. When excited by ultraviolet radiation, the phosphor emits a spectrum containing certain emission lines, the intensities of which vary with temperature. For a single temperature-sensitive line, ratios of the intensity at a reference temperature to the intensity at different temperatures were correlated as a function of surface temperature. The use of intensity ratio correlations avoids complications due to geometric (viewing angle) effects. Digitized images of the cylinder permitted calculation of surface temperatures and local Nusselt numbers. Differences between surface temperatures measured by calibrated thermocouples and temperatures determined from the phosphor technique were at most 1.2 degrees C. C1 WRIGHT LAB,AERO PROPULS & POWER DIRECTORATE,WRIGHT PATTERSON AFB,OH. CARNEGIE MELLON UNIV,DEPT MECH ENGN,PITTSBURGH,PA 15213. RP ERVIN, J (reprint author), UNIV DAYTON,DEPT MECH & AEROSP ENGN,DAYTON,OH 45469, USA. NR 20 TC 11 Z9 11 U1 0 U2 9 PU ELSEVIER SCIENCE PUBL CO INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0894-1777 J9 EXP THERM FLUID SCI JI Exp. Therm. Fluid Sci. PD NOV PY 1995 VL 11 IS 4 BP 387 EP 394 DI 10.1016/0894-1777(95)00061-5 PG 8 WC Thermodynamics; Engineering, Mechanical; Physics, Fluids & Plasmas SC Thermodynamics; Engineering; Physics GA TH003 UT WOS:A1995TH00300008 ER PT J AU KALUARACHCHI, JJ ELLIOTT, ET AF KALUARACHCHI, JJ ELLIOTT, ET TI DESIGN FACTORS FOR IMPROVING THE EFFICIENCY OF FREE-PRODUCT RECOVERY-SYSTEMS IN UNCONFINED AQUIFERS SO GROUND WATER LA English DT Article ID MONITORING WELLS; MULTIPHASE FLOW; HYDROCARBON; MODEL AB Free-product recovery system designs for light hydrocarbon recovery were investigated to evaluate the effects of multiple-stage pumping, delayed startup, and uncertainty of key residual oil saturation input data using a vertically integrated three-phase flow model, ARMOS. The results obtained from a single well recovery system subjected to a given well location and uniform soil properties suggested that multiple-stage water pumping can enhance the recovery and provide optimal design conditions if cost and recovery oil volume are the targets. However, if containment of the spill area with simultaneous recovery is the target, then single-stage pumping still provides the optimal design. Delayed startup of the operation from the initial site characterization can cause substantial plume movement during the lag period making predictions made with zero time lag invalid. Allowance should be made in the design to account for this time delay. Uncertainty of maximum residual oil saturations in both saturated and unsaturated zones may cause considerable differences in predicted results. Careful attention should be paid to obtaining these data for accurate remediation design. C1 ENVIRONM MANAGEMENT DIRECTORATE,HILL AFB,UT 84056. RP KALUARACHCHI, JJ (reprint author), UTAH STATE UNIV,COLL ENGN,UTAH WATER RES LAB,LOGAN,UT 84322, USA. NR 14 TC 5 Z9 5 U1 0 U2 1 PU GROUND WATER PUBLISHING CO PI COLUMBUS PA 2600 GROUND WATER WAY, COLUMBUS, OH 43219 SN 0017-467X J9 GROUND WATER JI Ground Water PD NOV-DEC PY 1995 VL 33 IS 6 BP 909 EP 916 DI 10.1111/j.1745-6584.1995.tb00036.x PG 8 WC Geosciences, Multidisciplinary; Water Resources SC Geology; Water Resources GA TD127 UT WOS:A1995TD12700006 ER PT J AU ROBINSON, DC BLOSS, JD SCHIANO, MA AF ROBINSON, DC BLOSS, JD SCHIANO, MA TI A RETROSPECTIVE STUDY OF TAMOXIFEN AND ENDOMETRIAL CANCER IN BREAST-CANCER PATIENTS SO GYNECOLOGIC ONCOLOGY LA English DT Article; Proceedings Paper CT 26th Annual Meeting of the Society-of-Gynecologic-Oncologists CY FEB 19-22, 1995 CL SAN FRANCISCO, CA SP Soc Gynecol Oncologists ID CARCINOMA; THERAPY; ADENOCARCINOMA; ASSOCIATION; GROWTH; CELLS; WOMEN AB Objective. To assess the relationship between low-dose tamoxifen, usage and endometrial cancer in breast cancer patients. Methods. In this case-control study, the records of the 1017 patients treated at Wilford Hall Medical Center for primary breast cancer between 1978 and 1989 were reviewed. Dose and duration of tamoxifen therapy were recorded as wed as the presence of a uterus. Potential confounding variables including diabetes mellitus, hypertension, age, weight, tobacco use, and family history of breast or gynecologic cancer were recorded, Results. Of the 1017 patients in the study, 56 had inadequate records and 375 had undergone a prior hysterectomy and these patients were excluded from the study, leaving 586 eligible patients. Of these 586 women with primary breast cancer and no previous hysterectomy, 108 patients had received tamoxifen, 10 mg twice a day for greater than 1 year. Four of the 108 patients subsequently developed endometrial adenocarcinoma Four hundred seventy-eight breast cancer patients did not receive tamoxifen and 4 later developed endometrial adenocarcinoma. The odds ratio for the development of endometrial cancer when exposed to tamoxifen was 15.2 with a 95% confidence interval of 2.8-84.4, The patients exposed and not exposed to tamoxifen were compared for potential confounding variables and after controlling for the potential confounders, tamoxifen was found to be an independent risk factor for the development of endometrial cancer. Conclusions. Low-dose tamoxifen when given for greater than 1 year is associated with secondary endometrial cancer in patients with primary breast cancer. (C) 1995 Academic Press, Inc. RP ROBINSON, DC (reprint author), WILFORD HALL USAF MED CTR,LACKLAND AFB,SAN ANTONIO,TX 78236, USA. NR 31 TC 44 Z9 44 U1 1 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0090-8258 J9 GYNECOL ONCOL JI Gynecol. Oncol. PD NOV PY 1995 VL 59 IS 2 BP 186 EP 190 PG 5 WC Oncology; Obstetrics & Gynecology SC Oncology; Obstetrics & Gynecology GA TD649 UT WOS:A1995TD64900005 PM 7590470 ER PT J AU AMBROS, RA SHERMAN, ME ZAHN, CM BITTERMAN, P KURMAN, RJ AF AMBROS, RA SHERMAN, ME ZAHN, CM BITTERMAN, P KURMAN, RJ TI ENDOMETRIAL INTRAEPITHELIAL CARCINOMA - A DISTINCTIVE LESION SPECIFICALLY ASSOCIATED WITH TUMORS DISPLAYING SEROUS DIFFERENTIATION SO HUMAN PATHOLOGY LA English DT Article DE ENDOMETRIAL INTRAEPITHELIAL CARCINOMA; UTERINE SEROUS CARCINOMA; ATYPICAL ENDOMETRIAL HYPERPLASIA; MALIGNANT MIXED MESODERMAL TUMOR; CANCER PRECURSOR; CARCINOGENESIS ID HYPERPLASIA; FEATURES; UTERUS AB Endometrial intraepithelial carcinoma (EIC) is a recently described lesion characterized by replacement of endometrial surface epithelium or glands by malignant cells resembling high-grade invasive endometrial carcinoma. ETC has been identified in a high proportion of uteri containing serous carcinoma, but its association with other endometrial tumors is unknown, To determine the strength and specificity of the association of EIC with tumors displaying serous differentiation, the appearance of the endometrium in 38 uteri with serous carcinoma, 113 with endometrioid carcinoma, and 34 with malignant mixed mesodermal tumor (MMMT) were compared, EIC was present in 34 (89%) uteri with serous carcinoma compared with 7 (6%) uteri removed for endometrioid carcinoma (P =.0001). Hyperplasia without atypia was found in only 2 (5%) of 38 serous carcinomas compared with 38 (34%) of 113 endometrioid carcinomas. Similarly, atypical hyperplasia was not found in any uterus with serous carcinoma, but was present in 14 (12%) uteri with endometrioid carcinoma (P =.02). The endometrium was inactive or atrophic in 29 (76%) patients with serous carcinoma compared with 33 (29%) with endometrioid carcinoma (P =.0001). EIC was found in five (56%) of nine MMMTs with a serous epithelial component (serous-MMMT) compared with one (4%) of 25 MMMTs with an endometrioid epithelial component (endometrioid-MMMT). As with endometrioid and serous carcinomas, hyperplasia with and without atypia was more common with endometrioid-MMMTs as compared with serous MMMTs. Hyperplasia was found in 25 (100%) and atypical hyperplasia in 8 (32%) of 25 endometrioid-MMMTs, but in none of the nine serous-MMMTs. This study shows that EIC is frequently and specifically associated with uterine tumors displaying serous differentiation. The findings suggest that EIC represents a form of intraepithelial tumor growth characteristic of serous carcinoma and serous MMMT and that ETC is the likely precursor of these neoplasms, In addition, the findings provide further evidence supporting the view that MMMTs represent variants of carcinoma not sarcoma. Copyright (C) 1995 by W.B. Saunders Company C1 ALBANY MED COLL,DEPT PATHOL,ALBANY,NY. ALBANY MED COLL,DEPT GYNECOL & OBSTET,ALBANY,NY. JOHNS HOPKINS UNIV,SCH MED,DEPT PATHOL,BALTIMORE,MD. JOHNS HOPKINS UNIV,SCH MED,DEPT GYNECOL & OBSTET,BALTIMORE,MD. GEORGE WASHINGTON UNIV,MED CTR,DEPT PATHOL,WASHINGTON,DC 20037. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. RUSH PRESBYTERIAN ST LUKES MED CTR,DEPT PATHOL,CHICAGO,IL 60612. NR 21 TC 176 Z9 186 U1 0 U2 2 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0046-8177 J9 HUM PATHOL JI Hum. Pathol. PD NOV PY 1995 VL 26 IS 11 BP 1260 EP 1267 DI 10.1016/0046-8177(95)90203-1 PG 8 WC Pathology SC Pathology GA TD654 UT WOS:A1995TD65400016 PM 7590702 ER PT J AU SHUTE, RD AF SHUTE, RD TI ELECTRODELESS ULTRAVIOLET COMMUNICATIONS-SYSTEM SO IEEE AEROSPACE AND ELECTRONIC SYSTEMS MAGAZINE LA English DT Article RP SHUTE, RD (reprint author), USAF,WRIGHT LAB,AVION DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 10 TC 5 Z9 5 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0885-8985 J9 IEEE AERO EL SYS MAG JI IEEE Aerosp. Electron. Syst. Mag. PD NOV PY 1995 VL 10 IS 11 BP 2 EP 7 DI 10.1109/62.473406 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA TD998 UT WOS:A1995TD99800003 ER PT J AU TATE, R GURLEY, K MCIVER, J HAGER, G AF TATE, R GURLEY, K MCIVER, J HAGER, G TI DYNAMICS OF A MODE-LOCKED LOW-PRESSURE PHOTOLYTIC I-ASTERISK LASER SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article AB A longitudinally pumped photolytic iodine laser has been reliably mode-locked over a broad range of iodide pressures (1-30 Torr). Average mode-locked pulse widths ranging from 1,4-2,5 ns were observed as a function of CF3I Iodide pressure and added buffer gas (Ar). Low-pressure data indicate an increased gain bandwidth as a result of an initial nonthermal I* atom distribution following rapid (<20 us) photolysis of the parent molecule, CF3I, Nearly 1.75 eV of excess pump energy is available and is deposited into the internal vibrational and rotational degrees of freedom of the large radical and into the translation of the nascent iodine atom, allowing for high iodine atom velocities in the frame of observation, A diode laser system tuned to the 3-4 transition of spin-orbit excited iodine atoms was used to observe the time-dependent behavior of line center gain along the optical axis, Preliminary data indicate an Ir atom velocity relaxation on the order of 1 mu s for an iodide pressure of 1 Torr, and approximately 300 ns for a pressure of 10 Torr, At 5 Torr of CF3I, the laser mode build np time is 200 ns, allowing access to the increased gain bandwidth and resulting in mode-locked pulse widths less than the predicted transform-limited pulse width for an inhomogeneous gas laser. RP TATE, R (reprint author), USAF,PHILLIPS LAB,LIDB,LASERS & IMAGING DIRECTORATE,3350 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 13 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD NOV PY 1995 VL 31 IS 11 BP 1910 EP 1912 DI 10.1109/3.469269 PG 3 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA TC635 UT WOS:A1995TC63500005 ER PT J AU FALLER, WE SCHRECK, SJ AF FALLER, WE SCHRECK, SJ TI REAL-TIME PREDICTION OF UNSTEADY AERODYNAMICS - APPLICATION FOR AIRCRAFT CONTROL AND MANEUVERABILITY ENHANCEMENT SO IEEE TRANSACTIONS ON NEURAL NETWORKS LA English DT Article AB The capability to control unsteady separated how fields could dramatically enhance aircraft agility, To enable control, however, real-time prediction of these flow fields over a broad parameter range must be realized, The present work describes real-time predictions of three-dimensional unsteady separated flow fields and aerodynamic coefficients using neural networks, Unsteady surface-pressure readings were obtained from an airfoil pitched at a constant rate through the static stall angle, All data sets were comprised of 15 simultaneously acquired pressure records and one pitch angle record, Five such records and the associated pitch angle histories were used to train the neural network using a time-series algorithm, Post-training, the input to the network was the pitch angle (alpha), the angular velocity (d alpha/dt), and the initial 15 recorded surface pressures at time (t(0)), Subsequently, the time (t + Delta t) network predictions, for each of the surface pressures, were fed back as the input to the network throughout the pitch history, The results indicated that the neural network accurately predicted the unsteady separated flow fields as well as the aerodynamic coefficients to within 5% of the experimental data, Consistent results were obtained both for the training set as well as for generalization to both other constant pitch rates and to sinusoidal pitch motions. The results clearly indicated that the neural-network model could predict the unsteady surface-pressure distributions and aerodynamic coefficients based solely on angle of attack information, The capability for real-time prediction of both unsteady separated flow fields and aerodynamic coefficients across a wide range of parameters in turn provides a critical step towards the development of control systems targeted at exploiting unsteady aerodynamics for aircraft maneuverability enhancement. C1 CARDEROCK DIV NSWC,BETHESDA,MD 20084. USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. RP FALLER, WE (reprint author), JOHNS HOPKINS UNIV,DEPT MECH ENGN,BALTIMORE,MD 21218, USA. NR 19 TC 24 Z9 25 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1045-9227 J9 IEEE T NEURAL NETWOR JI IEEE Trans. Neural Netw. PD NOV PY 1995 VL 6 IS 6 BP 1461 EP 1468 DI 10.1109/72.471362 PG 8 WC Computer Science, Artificial Intelligence; Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA TC776 UT WOS:A1995TC77600016 PM 18263439 ER PT J AU SCHAFER, CM AF SCHAFER, CM TI PHYSICAL URTICARIA SO IMMUNOLOGY AND ALLERGY CLINICS OF NORTH AMERICA LA English DT Review ID DELAYED PRESSURE URTICARIA; EXERCISE-INDUCED ANAPHYLAXIS; SOLAR URTICARIA; CHOLINERGIC URTICARIA; AQUAGENIC URTICARIA; VIBRATORY ANGIOEDEMA; CLINICAL-FEATURES; HISTAMINE-RELEASE; LESION INDUCTION; HYPERSENSITIVITY AB Physical urticarias account for 10% to 20% of all chronic urticarial reactions. Symptoms develop from physical environmental changes that appear to affect the mast cell. Mechanical sources produce dermatographism, delayed pressure urticaria, and vibratory angioedema. Thermal changes are responsible for cholinergic and cold urticaria. Exposure to Light, water, and exercise are the triggers for solar urticaria, aquagenic urticaria, and exercise-induced anaphylaxis, respectively. RP SCHAFER, CM (reprint author), WILFORD HALL USAF MED CTR,DEPT ALLERGY & IMMUNOL,LACKLAND AFB,2200 BERQUIST DR SUITE 1,SAN ANTONIO,TX 78236, USA. NR 103 TC 5 Z9 5 U1 0 U2 3 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0889-8561 J9 IMMUNOL ALLERGY CLIN JI Immunol. Allerg. Clin. North Am. PD NOV PY 1995 VL 15 IS 4 BP 679 EP & PG 0 WC Allergy; Immunology SC Allergy; Immunology GA TG255 UT WOS:A1995TG25500004 ER PT J AU KENNARD, CD AF KENNARD, CD TI EVALUATION AND TREATMENT OF URTICARIA SO IMMUNOLOGY AND ALLERGY CLINICS OF NORTH AMERICA LA English DT Article ID CHRONIC IDIOPATHIC URTICARIA; DOUBLE-BLIND; THERAPEUTIC EFFICACY; PHARMACODYNAMIC PROPERTIES; H-1 ANTIHISTAMINES; HISTAMINE-RELEASE; IN-VITRO; TERFENADINE; ASTEMIZOLE; PLACEBO AB Urticaria is a common affliction that can be frustrating to patients beset with chronic pruritus and wheals as well as baffling to physicians who search for the cause and an effective treatment. Even in the absence of clearly identifiable causes, however, the treatment of urticaria may be guided by an understanding of the various pathophysiologic mechanisms involved. Antihistamines, the mainstay of therapy in urticaria, have been augmented through the development of nonsedating compounds of high efficacy. Mast cell stabilizers and other inhibitors of urticaria mediators may prove effective in selected cases. Optimal therapeutic outcomes often require trials of various medications guided by the clinical response within the limits of acceptable side effects. RP KENNARD, CD (reprint author), WILFORD HALL USAF MED CTR,PSMD,LACKLAND AFB,2200 BERGQUIST DR,SUITE 1,SAN ANTONIO,TX 78236, USA. NR 88 TC 9 Z9 9 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0889-8561 J9 IMMUNOL ALLERGY CLIN JI Immunol. Allerg. Clin. North Am. PD NOV PY 1995 VL 15 IS 4 BP 785 EP & PG 0 WC Allergy; Immunology SC Allergy; Immunology GA TG255 UT WOS:A1995TG25500010 ER PT J AU Garcia, SK AF Garcia, SK TI Multimedia technologies for training: An introduction - Barron,A, Orwig,G SO INSTRUCTIONAL SCIENCE LA English DT Book Review RP Garcia, SK (reprint author), USAF,TECH TRAINING RES DIV,ARMSTRONG LAB,BROOKS AFB,TX 78235, USA. NR 3 TC 0 Z9 0 U1 1 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0020-4277 J9 INSTR SCI JI Instr. Sci. PD NOV PY 1995 VL 23 IS 5-6 BP 453 EP 455 DI 10.1007/BF00896882 PG 3 WC Education & Educational Research; Psychology, Educational SC Education & Educational Research; Psychology GA TU247 UT WOS:A1995TU24700008 ER PT J AU Hall, CR AF Hall, CR TI Proceedings of the IFIPTC3/WG3.1./WG3.5 open conference on informatics and changes in learning, Gmunden, Austria, 7-11 June, 1993 - Johnson,DC, Samways,B SO INSTRUCTIONAL SCIENCE LA English DT Book Review RP Hall, CR (reprint author), USAF,ARMSTRONG LAB,HUMAN RESOURCES DIRECTORATE,BROOKS AFB,TX 78235, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0020-4277 J9 INSTR SCI JI Instr. Sci. PD NOV PY 1995 VL 23 IS 5-6 BP 459 EP 464 PG 6 WC Education & Educational Research; Psychology, Educational SC Education & Educational Research; Psychology GA TU247 UT WOS:A1995TU24700010 ER PT J AU Pendleton, E Moster, G Keller, D AF Pendleton, E Moster, G Keller, D TI Transonic aeroelastic models of highly swept hypersonic lifting surfaces SO JOURNAL OF AIRCRAFT LA English DT Article AB Transonic aeroelastic wind-tunnel models simulating geometric and dynamic properties of lightweight, highly swept hypersonic lifting surfaces have been designed, fabricated, and tested. The aeroelastic model designs were consistent with preliminary designs of lifting surfaces for single-stage-to-orbit vehicles. The models were tested in the NASA Langley Research Center's Transonic Dynamics Tunnel. This article summarizes the design and tests conducted for each of the two models. Wind-tunnel test results are presented showing aeroelastic instability boundaries, Aeroelastic analyses, conducted for correlation with wind-tunnel results, are also presented. RP Pendleton, E (reprint author), USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD NOV-DEC PY 1995 VL 32 IS 6 BP 1169 EP 1176 DI 10.2514/3.46860 PG 8 WC Engineering, Aerospace SC Engineering GA TK779 UT WOS:A1995TK77900001 ER PT J AU Faller, WE Schreck, SJ Helin, HE AF Faller, WE Schreck, SJ Helin, HE TI Real-time model of three-dimensional dynamic reattachment using neural networks SO JOURNAL OF AIRCRAFT LA English DT Article AB The reattachment of unsteady separated flowfields is a critical issue in the determination of both helicopter and wind-turbine blade performance as well as for poststall maneuvers in aircraft. To fully understand this process and to enable control, numerical techniques that provide real-time models of the reattachment process over a broad parameter range must be realized. This article describes real-time models, using neural networks, for the dynamic reattachment of three-dimensional unsteady separated flowfields, The results indicate that the neural network model accurately predicts the dynamic reattachment process to within 5% of the experimental data across the parameter space bounded by nondimensional pitch rates alpha(+) of 0.01 and 0.20. However, the error was substantially larger for an alpha(+) of 0.02. Analyses indicate that the parameter space is governed by two different sets of flow physics that transition at roughly an alpha(+) of 0.03. As such, the results show that neural network models can be used not only to detect changes in the flow physics, but for defining areas within the parameter space where additional experimental characterization would be useful, Further, the results indicate that the flowfield wing interactions are three dimensional, however, the spanwise effects of the three dimensionality are subdued relative to dynamic stall. C1 USAF ACAD,COLORADO SPRINGS,CO 80840. NR 0 TC 6 Z9 6 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD NOV-DEC PY 1995 VL 32 IS 6 BP 1177 EP 1182 DI 10.2514/3.46861 PG 6 WC Engineering, Aerospace SC Engineering GA TK779 UT WOS:A1995TK77900002 ER PT J AU Grismer, DS Nelson, RC AF Grismer, DS Nelson, RC TI Double-delta-wing aerodynamics for pitching motions with and without sideslip SO JOURNAL OF AIRCRAFT LA English DT Article AB Subsonic aerodynamic experiments, both with and without sideslip, were performed on a strake/wing planform for both static and dynamic conditions. The strake sweep, wing sweep, and strake-to-wing fineness ratio for the model was 80 deg/60 deg/0.6. Flow visualization information was obtained by marking the strake and wing vortices with smoke in order to determine the state of the vortices (i.e., existence, pre- or postbreakdown). Five-component force and moment data was also taken. Both the flow visualization and the force and moment information were obtained for the model at static angles of attack, as well as for the model undergoing sinusoidal pitching motions. The minimum and maximum angles of attack of the motions were varied. Also varied were the reduced frequencies of the motions. The combined information obtained from the now visualization and force experiments was used to explain some of the dynamic effects observed for the double delta wing. RP Grismer, DS (reprint author), USAF,WRIGHT LAB,FLIGHT DYNAM DIRECTORATE,BLDG 146,ROOM 305,2210 8TH ST,SUITE 21,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 9 Z9 9 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD NOV-DEC PY 1995 VL 32 IS 6 BP 1303 EP 1311 DI 10.2514/3.46879 PG 9 WC Engineering, Aerospace SC Engineering GA TK779 UT WOS:A1995TK77900020 ER PT J AU Brandt, SA AF Brandt, SA TI Vortex burst model for the vortex lattice method SO JOURNAL OF AIRCRAFT LA English DT Note RP Brandt, SA (reprint author), USAF ACAD,DEPT AERONAUT,2354 FAIRCHILD DR,SUITE 6H24,COLORADO SPRINGS,CO 80840, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD NOV-DEC PY 1995 VL 32 IS 6 BP 1394 EP 1396 DI 10.2514/3.46891 PG 3 WC Engineering, Aerospace SC Engineering GA TK779 UT WOS:A1995TK77900033 ER PT J AU Towne, MC Buter, TA AF Towne, MC Buter, TA TI Numerical study of alternate forms of dynamic-stall-vortex suppression SO JOURNAL OF AIRCRAFT LA English DT Note RP Towne, MC (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD NOV-DEC PY 1995 VL 32 IS 6 BP 1405 EP 1407 DI 10.2514/3.46894 PG 3 WC Engineering, Aerospace SC Engineering GA TK779 UT WOS:A1995TK77900037 ER PT J AU JONES, KA LAREAU, RT MONAHAN, T FLEMISH, JR PFEFFER, RL SHERRIFF, RE LITTON, CW JONES, RL STUTZ, CE LOOK, DC AF JONES, KA LAREAU, RT MONAHAN, T FLEMISH, JR PFEFFER, RL SHERRIFF, RE LITTON, CW JONES, RL STUTZ, CE LOOK, DC TI COMPARISON OF OMVPE GROWN GAAS/ALGAAS AND GAAS/INGAP HEMT AND PHEMT STRUCTURES SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT 7th Biennial Workshop on Organometallic Vapor Phase Epitaxy CY APR 02-06, 1995 CL FT MYERS, FL SP Air Prod & Chem Inc, Aixtron Inc, Akzo Nobel Chem Inc, EMCORE Corp, Epitaxial Prod Int ltd, MCP Wafer Technol Ltd, MKS Instruments, Morton Int, NIMTEC Inc, Japan Energy Corp, Rockwell Int, Solkatron Chem, Thomas Swann & Co Ltd, Sci Equipment Div DE GAAS/ALGAAS; GAAS/INGAP; HIGH ELECTRON MOBILITY TRANSISTOR (HEMT); PSEUDO-MORPHIC HIGH ELECTRON MOBILITY TRANSISTOR (PHEMT); ORGANOMETALLIC VAPOR PHASE EPITAXY (OMVPE) ID CHEMICAL VAPOR-DEPOSITION; PSEUDOMORPHIC HEMT; MOVPE; HETEROSTRUCTURES; PRESSURE; GAAS; LSIS; TEMPERATURE; UNIFORM; QUALITY AB Symmetric delta-doped InGaP and AlGaAs PHEMT structures have been grown by organometallic vapor phase epitaxy with properties that approach those of MBE grown AlGaAs structures. The 300 and 77K carrier concentrations for the InGaP PHEMT were 2.72 and 2.56 x 10(12) cm(-2) and the mobilities were 5,920 and 22,000 cm(2)/V . s. These excellent values suggest that problems associated with switching the anion at the channel heterojunction have been overcome. The corresponding values for the AlGaAs PHEMT were 2.51 and 2.19 x 10(12) cm(-2) and 6,500 and 20,400 cm(2)/V . s. The uniformity in the indium concentration in the InGaAs layer as determined by photoluminescence, photoreflection, double crystal x-ray diffraction, and Rutherford backscattering was found to be good, but the percent In in the AlGaAs pseudo-morphic high electron mobility transistor (PHEMT) was less than that in the InGaP PHEMT even though the programmed values were the same. The uniformity in the doping distribution as determined by secondary ion mass spectroscopy and electrochemical capacitance-voltage measurements was found to be good, but it decreased with distance from the center of the susceptor. Also, most of the dopants in the delta-doped InGaP and AlGaAs layers were activated. C1 USAF,WRIGHT LAB,ELR,WRIGHT PATTERSON AFB,OH 45433. WRIGHT STATE UNIV,DAYTON,OH 45435. RP JONES, KA (reprint author), USA,RES LAB,AMSRC,EP,EC,FT MONMOUTH,NJ 07703, USA. NR 26 TC 1 Z9 1 U1 0 U2 1 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD NOV PY 1995 VL 24 IS 11 BP 1641 EP 1648 DI 10.1007/BF02676825 PG 8 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA TE167 UT WOS:A1995TE16700023 ER PT J AU PADUANO, QS WEYBURNE, D LU, F BHAT, R AF PADUANO, QS WEYBURNE, D LU, F BHAT, R TI EVALUATION AND OPTIMIZATION OF LARGE-AREA III-V EPITAXIAL THICKNESS UNIFORMITY USING A FABRY-PEROT MICROCAVITY TEST STRUCTURE SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT 7th Biennial Workshop on Organometallic Vapor Phase Epitaxy CY APR 02-06, 1995 CL FT MYERS, FL SP Air Prod & Chem Inc, Aixtron Inc, Akzo Nobel Chem Inc, EMCORE Corp, Epitaxial Prod Int ltd, MCP Wafer Technol Ltd, MKS Instruments, Morton Int, NIMTEC Inc, Japan Energy Corp, Rockwell Int, Solkatron Chem, Thomas Swann & Co Ltd, Sci Equipment Div DE FABRY-PEROT TEST STRUCTURE; GAAS/A1AS; OPTICAL REFLECTIVITY MAPPING ID REFLECTANCE SPECTROSCOPY; GROWTH; MOVPE; GAAS; LAYERS; FLOW AB We report a technique for simply and conveniently measuring epilayer thickness uniformity to 0.5% over an entire wafer. The technique requires epitaxial growth of a Fabry-Perot microcavity test structure. Mapping is performed by measuring the wavelength-dependent optical reflectivity at different points on the wafer and then fitting the reflectivity data to deduce the thickness uniformity. The mapping technique was used to determine the optimal growth conditions in a vertical rotating disk reactor that resulted in better than +/-1% uniformity over a 2 inch wafer. The high precision of the optical reflectivity mapping technique can provide information not easily obtained with other techniques. For example, we show that the presence of wafer flat adversely affects the thickness uniformity. C1 USAF,ROME LAB,BEDFORD,MA 01731. BELLCORE,RED BANK,NJ 07701. RP PADUANO, QS (reprint author), KOPIN CORP,TAUNTON,MA 02780, USA. NR 18 TC 2 Z9 2 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD NOV PY 1995 VL 24 IS 11 BP 1659 EP 1665 DI 10.1007/BF02676828 PG 7 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA TE167 UT WOS:A1995TE16700026 ER PT J AU TSUI, R HALL, CD AF TSUI, R HALL, CD TI RESONANCE CAPTURE IN UNBALANCED DUAL-SPIN SPACECRAFT SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB Spin-up dynamics of unbalanced dual spin spacecraft may lead to a condition in which the spacecraft rotates in a nearly flat spin motion, transverse to the nominal spin axis. This condition has been described as a resonance trap, as precession phase lock, as stall, and as resonance capture. This phenomenon depends on spacecraft geometry, spin-up torque magnitude, and initial conditions, In this paper, we develop the concept of a probability of capture and construct a simple graphical tool that is used to illustrate sets of initial conditions that are likely to lead to capture. RP TSUI, R (reprint author), USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433, USA. NR 12 TC 7 Z9 7 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD NOV-DEC PY 1995 VL 18 IS 6 BP 1329 EP 1335 DI 10.2514/3.21549 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA TE758 UT WOS:A1995TE75800016 ER PT J AU CHINNERY, AE HALL, CD AF CHINNERY, AE HALL, CD TI MOTION OF A RIGID-BODY WITH AN ATTACHED SPRING-MASS DAMPER SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB The stability of motion of a torque-free rigid body with a precession damper is investigated. The equations of motion are presented and nondimensionalized, and the well-known conditions for asymptotic stability of the major axis spin are stated. Attention is given to the cases where these conditions are not met, Results of numerical integration are used to identify three distinct types of motion, including solutions that are apparently limit cycles, Bifurcation diagrams are used to argue that the apparent limit cycles are actually slowly approaching an equilibrium. The bifurcation diagrams also identify regions where the jump phenomenon may occur. The Lyapunov-Schmidt reduction technique is used to obtain a simple analytical relationship between the system parameters that determines whether the jump phenomenon is possible. RP CHINNERY, AE (reprint author), USAF,INST TECHNOL,NATL AIR INTELLIGENCE CTR,WRIGHT PATTERSON AFB,OH 45433, USA. NR 16 TC 19 Z9 21 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD NOV-DEC PY 1995 VL 18 IS 6 BP 1404 EP 1409 DI 10.2514/3.21560 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA TE758 UT WOS:A1995TE75800027 ER PT J AU Suleman, A Venkayya, VB AF Suleman, A Venkayya, VB TI A simple finite element formulation for a laminated composite plate with piezoelectric layers SO JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES LA English DT Article ID ACTUATORS; SENSORS; DESIGN AB A simple finite element formulation for a composite plate with laminated piezoelectric layers is presented. Classical laminate theory with electromechanical induced actuation and variational principles are used to formulate the equations of motion for a Mindlin plate element based upon uniformly reduced numerical integration and hourglass stabilization. The equations of motion are discretized with four-node, 24 degree of freedom quadrilateral shell elements with one electrical degree of freedom per piezoelectric layer. Performance of the finite element formulation developed here has been tested and compared to the experimental and analytical results documented in literature. C1 USAF,WRIGHT LAB,FIBAD,WRIGHT PATTERSON AFB,OH 45433. OI Suleman, Afzal/0000-0001-8936-7340 NR 10 TC 85 Z9 88 U1 1 U2 6 PU TECHNOMIC PUBL CO INC PI LANCASTER PA 851 NEW HOLLAND AVE, BOX 3535, LANCASTER, PA 17604 SN 1045-389X J9 J INTEL MAT SYST STR JI J. Intell. Mater. Syst. Struct. PD NOV PY 1995 VL 6 IS 6 BP 776 EP 782 DI 10.1177/1045389X9500600605 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA TQ347 UT WOS:A1995TQ34700005 ER PT J AU MILLER, DR AUFDEMORTE, TB FOX, WC WALDROP, TC MEALEY, BL BRUNSVOLD, MA AF MILLER, DR AUFDEMORTE, TB FOX, WC WALDROP, TC MEALEY, BL BRUNSVOLD, MA TI PERIODONTITIS IN THE BABOON - A POTENTIAL MODEL FOR HUMAN-DISEASE SO JOURNAL OF PERIODONTAL RESEARCH LA English DT Article DE BABOON; PERIODONTITIS; ANIMAL MODELS; PRIMATES ID NATURAL-HISTORY; ATTACHMENT; PLAQUE; AGE AB Advances in periodontics with respect to disease activity, microbiology and immunology have demonstrated the multifactorial nature of periodontal diseases. This serves to underscore the need for an ideal animal model for periodontal research. Non-human primates are most similar to man in comparison to other animal models. The baboon is an Old World monkey that has infrequently been used in periodontal research. Periodontal exams were accomplished on 116 baboons (Papio anubis, P. cynocephalus) ages 5 to 30 years with one baboon year being roughly equivalent to 3 to 4 human years. The study population consisted of 29 males and 87 females. Clinical parameters including probing depth, attachment level, mobility, plaque index and gingival index were collected. Radiographs were taken on 25 animals and correlated to clinical findings. Results showed a significant increase in mean probing depth and mean attachment level with age (p = 0.0001). Disease prevalence and severity were not significantly different between genders. Mobility was uncommon; however, the prevalence and severity of furcation involvement increased with age. Radiographs suggested horizontal and isolated vertical bone loss. Plaque and gingival indices were at sustained high levels for all age groups and showed a statistically significant increase with age. Some baboons were found to develop a naturally-occurring periodontitis that increased in severity with age. This primate may be a suitable model for studies in human periodontal disease. C1 WILFORD HALL USAF MED CTR,DEPT PERIODONT,LACKLAND AFB,TX. UNIV TEXAS,HLTH SCI CTR,DEPT ORAL PATHOL,SAN ANTONIO,TX. BIOMED ENTERPRISES,SAN ANTONIO,TX. VIRGINIA COMMONWEALTH UNIV,MED COLL VIRGINIA,DEPT PERIODONT,RICHMOND,VA 23298. UNIV TEXAS,HLTH SCI CTR,DEPT PERIODONT,SAN ANTONIO,TX 78284. NR 31 TC 16 Z9 17 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0022-3484 J9 J PERIODONTAL RES JI J. Periodont. Res. PD NOV PY 1995 VL 30 IS 6 BP 404 EP 409 DI 10.1111/j.1600-0765.1995.tb01294.x PG 6 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TD469 UT WOS:A1995TD46900005 PM 8544104 ER PT J AU BOYER, KM KING, PI COPENHAVER, WW AF BOYER, KM KING, PI COPENHAVER, WW TI STALL INCEPTION IN SINGLE-STAGE, TRANSONIC COMPRESSORS WITH STRAIGHT AND SWEPT LEADING EDGES SO JOURNAL OF PROPULSION AND POWER LA English DT Note CT AIAA/SAE/ASME/ASEE 29th Joint Propulsion Conference and Exhibition CY JUN 28-30, 1993 CL MONTEREY, CA SP Amer Inst Aeronaut & Astronaut, Soc Automot Engineers, Amer Soc Mech Engineers, Amer Soc Engn Educ C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NR 15 TC 0 Z9 0 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD NOV-DEC PY 1995 VL 11 IS 6 BP 1363 EP 1366 DI 10.2514/3.23980 PG 4 WC Engineering, Aerospace SC Engineering GA TF316 UT WOS:A1995TF31600035 ER PT J AU Keener, D Lenertz, J Bowersox, R Bowman, J AF Keener, D Lenertz, J Bowersox, R Bowman, J TI Transpiration cooling effects on nozzle heat transfer and performance SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB The effects of transpiration cooling on boundary-layer growth, heat transfer, and nozzle performance were investigated. A two-dimensional Mach 2.0 contoured nozzle (Re/m = 5.2 x 10(7)), with one contoured wall constructed of sintered stainless steel (2.0-mu m pore size) was tested. Blowing ratios up to 0.51% of the freestream mass how were tested using high-frequency-response heat flux and pressure instrumentation. Measurements included wall heat flux and static pressure, as well as exit pitot pressure profiles. Shadowgraph photography was: used for flow visualization. A reduction in heat transfer of up to 14% was measured for the highest blowing ratio. On the other hand, large increases in the nozzle exit boundary-layer thickness were found. However, blowing had a minimal effect on the nozzle thrust coefficient and specific impulse. In general, this study highlighted the potential beneficial and adverse effects of transpiration cooling on rocket nozzle cooling. RP Keener, D (reprint author), USAF,INST TECHNOL,DEPT AERO ASTRONAUT ENGN,WRIGHT PATTERSON AFB,OH 45433, USA. NR 13 TC 12 Z9 15 U1 0 U2 6 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD NOV-DEC PY 1995 VL 32 IS 6 BP 981 EP 985 DI 10.2514/3.26718 PG 5 WC Engineering, Aerospace SC Engineering GA TK774 UT WOS:A1995TK77400008 ER PT J AU Spencer, DB Culp, RD AF Spencer, DB Culp, RD TI Designing continuous-thrust low-Earth-orbit to geosynchronous-Earth-orbit transfers SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB This paper examines a method that can be used to transfer a spacecraft from a circular low Earth orbit (LEG), inclined to the equator, to a circular geosynchronous Earth orbit (GEO) with no inclination. The principle is to minimize the propulsive-mass cost for a continuously thrusting vehicle with the capability for multiple on-off thrusting cycles. The analysis was conducted for a large range of initial accelerations, and it was found that the method is best used to bridge the gap between very low-thrust transfers and high-thrust, impulsive transfers. The simulation of a LEO-GEO transfer showed that the results varied from 1% over the optimal cost for a high-thrust transfer, to 2.5% over the optimal cost for an intermediate-thrust transfer, to 0.3% over the cost of a few-thrust, spiral transfer. This makes this technique a good first estimate algorithm for the entire range of high- to low-thrust transfers. C1 UNIV COLORADO,DEPT AEROSP ENGN SCI,BOULDER,CO 80309. RP Spencer, DB (reprint author), USAF,PHILLIPS LAB,DIV SPACE & MISSILES DYNAM,3550 ABERDEEN AVE,KIRTLAND AFB,NM 87117, USA. NR 7 TC 11 Z9 11 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD NOV-DEC PY 1995 VL 32 IS 6 BP 1033 EP 1038 DI 10.2514/3.26726 PG 6 WC Engineering, Aerospace SC Engineering GA TK774 UT WOS:A1995TK77400016 ER PT J AU Rustan, PL AF Rustan, PL TI Clementine mission SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Editorial Material RP Rustan, PL (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD NOV-DEC PY 1995 VL 32 IS 6 BP 1044 EP 1044 DI 10.2514/3.55688 PG 1 WC Engineering, Aerospace SC Engineering GA TK774 UT WOS:A1995TK77400018 ER PT J AU Culpepper, M Garrett, H Shannon, M AF Culpepper, M Garrett, H Shannon, M TI Estimates of the Clementine interstage adapter satellite tumble rate SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Note C1 CALTECH,JET PROP LAB,TECH STAFF,PASADENA,CA 91109. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP Culpepper, M (reprint author), USAF,PHILLIPS LAB,TECH STAFF,KIRTLAND AFB,NM 87117, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD NOV-DEC PY 1995 VL 32 IS 6 BP 1077 EP 1078 DI 10.2514/3.26734 PG 2 WC Engineering, Aerospace SC Engineering GA TK774 UT WOS:A1995TK77400025 ER PT J AU NAGY, PB KENT, RM AF NAGY, PB KENT, RM TI ULTRASONIC ASSESSMENT OF POISSONS RATIO IN THIN RODS SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID WAVES; FLUID AB It is shown in this paper that longitudinal guided modes propagating in a thin rod can be exploited to determine the axial Poisson's ratio of the material. The feasibility of two versions of the guided wave method have been studied. The first technique determines Poisson's ratio from the low-frequency dispersion of the axial guided mode in the free rod. It is well known that the velocity of this mode in a thin rod decreases with increasing frequency by a small amount that is proportional to the square of Poisson's ratio. The second technique is based on measuring the excess attenuation of the same mode due to leaky losses when the rod is immersed in water. The leaky attenuation, which is caused solely by the normal component of the surface vibration, is also proportional to the square of Poisson's ratio in the specimen. The main goal was to verify the results of this novel leaky-attenuation technique by comparing them to those of the more conventional first technique. The experimental results indicate that both techniques can be used to determine Poisson's ratio in thin (0.3-1.5)-mm-diam metal wires in the 200 KHz-2 MHz frequency range. The measured Poisson ratios were generally higher than the corresponding values in isotropic materials, which is indicative of the significant anisotropy characteristic of such specimens. (C) 1995 Acoustical Society of America. C1 NIST,WRIGHT LAB,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. RP NAGY, PB (reprint author), UNIV CINCINNATI,DEPT AEROSP ENGN & ENGN MECH,CINCINNATI,OH 45221, USA. RI Nagy, Peter/O-5404-2016 OI Nagy, Peter/0000-0001-5715-2409 NR 15 TC 21 Z9 22 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD NOV PY 1995 VL 98 IS 5 BP 2694 EP 2701 DI 10.1121/1.413234 PN 1 PG 8 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA TB921 UT WOS:A1995TB92100033 ER PT J AU GAMBERA, PJ SCHNEEMAN, BO DAVIS, PA AF GAMBERA, PJ SCHNEEMAN, BO DAVIS, PA TI USE OF THE FOOD GUIDE PYRAMID AND US DIETARY GUIDELINES TO IMPROVE DIETARY-INTAKE AND REDUCE CARDIOVASCULAR RISK IN ACTIVE-DUTY AIR-FORCE MEMBERS SO JOURNAL OF THE AMERICAN DIETETIC ASSOCIATION LA English DT Article ID HIGH-DENSITY LIPOPROTEINS; CORONARY HEART-DISEASE; WEIGHT-LOSS; FREQUENCY QUESTIONNAIRE; OVERWEIGHT MEN; PLASMA-LIPIDS; EXERCISE; WOMEN; INTERVENTION; CHOLESTEROL AB Objective To determine whether adoption of dietary patterns consistent with the US Dietary Guidelines for Americans and the Food Guide Pyramid, combined with exercise training, result in significant reductions in cardiovascular risk compared with a regimen of exercise therapy alone. Design A randomized trial to compare the effects of exercise alone (n = 17) with the effects of exercise and dietary intervention (n = 15). Setting McClellan Air Force Base medical clinic (Sacramento, Calif). Subjects Thirty-two members of the Air Force (20 men and 12 women) were recruited at the time they entered a 90-day fitness improvement program. Mean age was 32 years. Intervention All subjects participated in a 90-day fitness program. Half of the group received individualized dietary counseling using the Food Guide Pyramid as a primary educational tool. Main outcome measures Changes in body mass index, plasma lipids and lipoprotein levels, aerobic capacity, and dietary intake were selected to evaluate the effectiveness of the intervention. Statistical analyses performed Outcome measures were evaluated by analysis of variance. A paired t test was performed to compare changes in food-group servings and food-group fat intake from baseline values for the exercise-plus-diet group. Results Percentage of energy from fat decreased from 39% to 23% for the exercise-plus-diet group, and servings from each of the food groups changed to reflect current guidelines. This group also had significant reductions in body mass index, total cholesterol level, and low-density Lipoprotein level: 2% (P = .0001), 9% (P = .003), and 13% (P = .005), respectively. No change was observed for the exercise-only group. Additionally, a significant improvement in maximum oxygen consumption (P = .01) of 38% (vs 14% for the control group) was achieved. Conclusions Dietary modification in accordance with the Food Guide Pyramid and the US Dietary Guidelines results in significant reductions in known cardiovascular risk factors and improves the response to exercise training. C1 UNIV CALIF DAVIS,COLL AGR & ENVIRONM SCI,DAVIS,CA 95616. UNIV CALIF DAVIS,DEPT NUTR,DAVIS,CA 95616. UNIV CALIF DAVIS,DEPT INTERNAL MED,DIV CLIN NUTR,DAVIS,CA 95616. WILFORD HALL USAF MED CTR,CLIN NUTR & PATIENT TRAY SERV,LACKLAND AFB,TX 78236. NR 34 TC 24 Z9 24 U1 0 U2 2 PU AMER DIETETIC ASSN PI CHICAGO PA 216 W JACKSON BLVD #800, CHICAGO, IL 60606-6995 SN 0002-8223 J9 J AM DIET ASSOC JI J. Am. Diet. Assoc. PD NOV PY 1995 VL 95 IS 11 BP 1268 EP 1273 PG 6 WC Nutrition & Dietetics SC Nutrition & Dietetics GA TC872 UT WOS:A1995TC87200007 PM 7594122 ER PT J AU FULLER, J OSTERYOUNG, RA CARLIN, RT AF FULLER, J OSTERYOUNG, RA CARLIN, RT TI RECHARGEABLE LITHIUM AND SODIUM ANODES IN CHLOROALUMINATE MOLTEN-SALTS CONTAINING THIONYL CHLORIDE SO JOURNAL OF THE ELECTROCHEMICAL SOCIETY LA English DT Article ID REDUCTION POTENTIALS; IONIC LIQUIDS AB Lithium and sodium deposition-stripping studies were performed in room temperature buffered neutral chloroaluminate melts containing low concentrations of thionyl chloride (SOCl2). The SOCl2 solute promotes high cycling efficiencies of the alkali metals in these electrolytes. Staircase cyclic voltammetry and chronopotentiometry show cycling efficiencies of approximately 90% for both lithium and sodium. High cycling efficiencies are maintained following extended exposure of the melt to the dry box atmosphere and after time delays at open circuit. The performance of the SOCl2-promoted systems is substantially improved over previous studies in room temperature melts containing hydrogen chloride as the promoting solute. C1 USAF ACAD,FRANK J SEILER RES LAB,COLORADO SPRINGS,CO 80840. RP FULLER, J (reprint author), N CAROLINA STATE UNIV,DEPT CHEM,BOX 8204,RALEIGH,NC 27695, USA. NR 19 TC 58 Z9 60 U1 0 U2 4 PU ELECTROCHEMICAL SOC INC PI PENNINGTON PA 10 SOUTH MAIN STREET, PENNINGTON, NJ 08534 SN 0013-4651 J9 J ELECTROCHEM SOC JI J. Electrochem. Soc. PD NOV PY 1995 VL 142 IS 11 BP 3632 EP 3636 DI 10.1149/1.2048390 PG 5 WC Electrochemistry; Materials Science, Coatings & Films SC Electrochemistry; Materials Science GA TD933 UT WOS:A1995TD93300011 ER PT J AU Squires, MF Beitler, BA Fiorino, ST Parks, DL Smith, HG AF Squires, MF Beitler, BA Fiorino, ST Parks, DL Smith, HG TI A method of creating regional and worldwide data sets of extreme and average climatic values SO JOURNAL OF THE INSTITUTE OF ENVIRONMENTAL SCIENCES LA English DT Editorial Material RP Squires, MF (reprint author), USAF,CTR ENVIRONM TECH APPLICAT,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST ENVIRONMENTAL SCI PI MT PROSPECT PA 940 E NORTHWEST HIGHWAY, MT PROSPECT, IL 60056 SN 1052-2883 J9 J INST ENVIRON SCI JI J. Inst. Environ. Sci. PD NOV-DEC PY 1995 VL 38 IS 6 BP 53 EP 53 PG 1 WC Engineering, Environmental; Environmental Sciences; Instruments & Instrumentation SC Engineering; Environmental Sciences & Ecology; Instruments & Instrumentation GA TL952 UT WOS:A1995TL95200006 ER PT J AU HENRY, LJ DEVILBISS, AD TSAI, TE AF HENRY, LJ DEVILBISS, AD TSAI, TE TI EFFECT OF PREANNEALING ON THE LEVEL OF 2ND-HARMONIC GENERATION AND DEFECT SITES ACHIEVED IN POLED LOW-WATER FUSED-SILICA SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID 2ND-ORDER NONLINEARITY; SIO2; DIFFUSION; HYDROGEN; DIOXIDE AB The level of second-harmonic generation (SHG) in poled low-water fused silica was altered by preannealing in aqueous and dry-nitrogen atmospheres. The effect-of water and heat was found to depend on the lot from which the material originated. The effect on the SHG of either a wet or a dry preanneal was sometimes found to be reversible by the opposite preannealing process. For both wet and dry preannealed samples the SHG was found to have both near-surface (<25-mu m) and bulk (approximate to 1.5-mm) components. Electron paramagnetic resonance (EPR) data revealed the presence of Si and Ge E' defect sites and showed that the relative concentrations of these sites was altered by the preannealing processes. EPR and SHG data provided evidence for a second-order bond effect along with a third-order hole-filling effect as sources of the nonlinearity. (C) 1995 Optical Society of America C1 VIRGINIA POLYTECH INST & STATE UNIV, BLACKSBURG, VA 24061 USA. RP USAF ACAD, FRANK J SEILER RES LAB, COLORADO SPRINGS, CO 80840 USA. NR 25 TC 40 Z9 40 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0740-3224 EI 1520-8540 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD NOV PY 1995 VL 12 IS 11 BP 2037 EP 2045 DI 10.1364/JOSAB.12.002037 PG 9 WC Optics SC Optics GA TD956 UT WOS:A1995TD95600002 ER PT J AU PETERSON, RD SCHEPLER, KL BROWN, JL SCHUNEMANN, PG AF PETERSON, RD SCHEPLER, KL BROWN, JL SCHUNEMANN, PG TI DAMAGE PROPERTIES OF ZNGEP2 AT 2-MU-M SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article AB Damage thresholds at 2 mu m exceeding 10 J/cm(2) were measured in ZnGeP2 witness samples representing a range of growth runs and surface treatments. Samples grown more recently were more robust, but clear correlations between damage properties and surface quality, coating type, or incident polarization were not observed. Variation in damage threshold both within individual samples and between samples was quite large. Comparison with uncoated diffusion-bonded and single-wafer GaAs shows that uncoated ZnGeP2 damages at slightly lower energy density than does GaAs (approximately 4 J/cm(2) versus 5.5 J/cm(2), respectively). (C) 1995 Optical Society of America C1 LOCKHEED SANDERS,NASHUA,NH 03061. RP PETERSON, RD (reprint author), USAF,WRIGHT LAB,SOLID STATE ELECTR DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI Schepler, Kenneth/D-3730-2015 NR 8 TC 27 Z9 27 U1 1 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD NOV PY 1995 VL 12 IS 11 BP 2142 EP 2146 DI 10.1364/JOSAB.12.002142 PG 5 WC Optics SC Optics GA TD956 UT WOS:A1995TD95600016 ER PT J AU KOCH, K MOORE, GT CHEUNG, EC AF KOCH, K MOORE, GT CHEUNG, EC TI OPTICAL PARAMETRIC OSCILLATION WITH INTRACAVITY DIFFERENCE-FREQUENCY MIXING SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA B-OPTICAL PHYSICS LA English DT Article ID GENERATION AB We report the theoretical analysis of an optical parametric oscillator that contains an intracavity crystal that generates the difference frequency between the signal and the idler produced by the optical parametric oscillator crystal. Phase mismatch in the difference-frequency mixer is considered. The cavity is singly resonant at the signal frequency. We find that high conversion efficiency of the difference and idler frequencies can be achieved over a large dynamic range of the incident pump intensity. A physical example that produces 3.192 mu m from a 1.064-mu m pump laser is predicted to produce 97.5% quantum efficiency in one polarization component and 197% quantum efficiency in the orthogonal-polarization component for a total power conversion efficiency of 98.2%. (C) 1995 Optical Society of America C1 UNIV NEW MEXICO,CTR ADV STUDIES,ALBUQUERQUE,NM 87131. RP KOCH, K (reprint author), USAF,PHILLIPS LAB,LIDN,3550 ABERDEEN AVE SE,KIRTLAND AFB,NM 87117, USA. NR 18 TC 33 Z9 33 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3224 J9 J OPT SOC AM B JI J. Opt. Soc. Am. B-Opt. Phys. PD NOV PY 1995 VL 12 IS 11 BP 2268 EP 2273 DI 10.1364/JOSAB.12.002268 PG 6 WC Optics SC Optics GA TD956 UT WOS:A1995TD95600030 ER PT J AU COLLINS, DL LACKNER, JR AF COLLINS, DL LACKNER, JR TI THE UNITED-STATES-AIR-FORCE SPATIAL ORIENTATION PROGRAM SO JOURNAL OF VESTIBULAR RESEARCH-EQUILIBRIUM & ORIENTATION LA English DT Editorial Material C1 BRANDEIS UNIV,ASHTON GRAYBIEL SPATIAL ORIENTAT LAB,WALTHAM,MA 02254. RP COLLINS, DL (reprint author), USAF,OFF SCI RES,SPATIAL ORIENTAT PROGRAM,BOLLING AFB,WASHINGTON,DC 20332, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0957-4271 J9 J VESTIBUL RES-EQUIL JI J. Vestib. Res.-Equilib. Orientat. PD NOV-DEC PY 1995 VL 5 IS 6 BP 389 EP 391 PG 3 WC Neurosciences; Otorhinolaryngology SC Neurosciences & Neurology; Otorhinolaryngology GA TD003 UT WOS:A1995TD00300001 PM 8589849 ER PT J AU PREVIC, FH NEEL, RL AF PREVIC, FH NEEL, RL TI THE EFFECTS OF VISUAL SURROUND ECCENTRICITY AND SIZE ON MANUAL AND POSTURAL CONTROL SO JOURNAL OF VESTIBULAR RESEARCH-EQUILIBRIUM & ORIENTATION LA English DT Article DE VISUAL; ORIENTATION; MANUAL; POSTURAL ID CIRCULAR VECTION; MOTION; STABILIZATION; STIMULATION; PERCEPTION AB This study investigated how the size and eccentricity of a moving visual surround influence manual and postural control, Twelve subjects performed a manual control task (keep an unstable central display level) and a postural control task (maintain an upright stance) while viewing a visual surround that rotated continuously at 25 degrees/s. The visual surround consisted of small red squares on a dark background and was presented in four different size/eccentricity conditions: central (similar to 15 degrees-60 degrees), peripheral (similar to 60 degrees-110 degrees), full-field (15 degrees-110 degrees), or central-peripheral conflict, The results showed that manual control biases in the direction of surround motion are strongly influenced by central-field as well as peripheral-field motion, whereas postural control biases are determined primarily by motion in the peripheral visual field. C1 ARMSTRONG LAB,DIV CREW TECHNOL,BROOKS AFB,TX. US SCH AEROSP MED,DEPT AEROSP MED,BROOKS AFB,TX. NR 21 TC 19 Z9 19 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0957-4271 J9 J VESTIBUL RES-EQUIL JI J. Vestib. Res.-Equilib. Orientat. PD NOV-DEC PY 1995 VL 5 IS 6 BP 399 EP 404 PG 6 WC Neurosciences; Otorhinolaryngology SC Neurosciences & Neurology; Otorhinolaryngology GA TD003 UT WOS:A1995TD00300003 PM 8589851 ER PT J AU COLLINS, DL HARRISON, G AF COLLINS, DL HARRISON, G TI SPATIAL DISORIENTATION EPISODES AMONG F-15C PILOTS DURING OPERATION DESERT-STORM SO JOURNAL OF VESTIBULAR RESEARCH-EQUILIBRIUM & ORIENTATION LA English DT Article DE SPATIAL DISORIENTATION; DEFINITION; FLIGHT CONDITIONS; VISUAL TRANSITION; RESEARCH OPPORTUNITIES; COLLINS SPATIAL DISORIENTATION SURVEY AB Spatial Orientation (SO) under flight conditions is the accurate ''integration'' of sensory inputs from the dynamic aviation environment that result in safe and effective goal-oriented performance, Insidious sensory mismatches routinely occur during flight, impeding pilot performance. When this sensory dissonance occurs, if not appropriately resolved, it will result in perceived or actual errors in aircraft control that are estimated to cost the Air Force between $150 and $200M per annum in aircraft accidents. A scientific survey was created acid administered to 96 F-15C combat pilots after their return from Desert Storm, The survey sought to determine where in the flight profile, and under what conditions, spatial disorientation (SD) episodes occurred, The survey consisted of multiple choice and open-ended questions, The analyses of the data revealed that visual transitions from inside to outside the cockpit (or the reciprocal) under different conditions of flight were associated with the occurrence of SD episodes, The frequency of SD episodes varied depending on visual transitions (or no visual transitions) and types of flight conditions (for example, nighttime and bad weather). This SD survey provided flight information that allowed us to direct research to those areas that were problematic during combat operations. C1 SAN ANTONIO AIR LOGIST CTR,AFOSR,USAFR,SAN ANTONIO,TX. RP COLLINS, DL (reprint author), USAF,NL,OFF SCI RES,CHEM & LIFE SCI DIRECTORATE,110 DUNCAN AVE,B-115,BOLLING AFB,DC 20332, USA. NR 13 TC 7 Z9 9 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0957-4271 J9 J VESTIBUL RES-EQUIL JI J. Vestib. Res.-Equilib. Orientat. PD NOV-DEC PY 1995 VL 5 IS 6 BP 405 EP 410 PG 6 WC Neurosciences; Otorhinolaryngology SC Neurosciences & Neurology; Otorhinolaryngology GA TD003 UT WOS:A1995TD00300004 PM 8589852 ER PT J AU HALL, RB HAGA, JA GUERRA, CG CASTLEBERRY, SM HICKMAN, JR AF HALL, RB HAGA, JA GUERRA, CG CASTLEBERRY, SM HICKMAN, JR TI OPTIMIZING THE DETECTION OF HEMOGLOBIN-H DISEASE SO LABORATORY MEDICINE LA English DT Note AB Hemoglobin (Hb) H disease is a mild to severe chronic hemolytic anemia. The disease most commonly results front an absence of three of the four alpha-globin genes. Hb H disease affects individuals throughout Southeast Asia, the Mediterranean Islands, and parts of the Middle East. The prevalence of Hb H disease lit the United States has increased in recent years. A presumptive diagnosis is relatively easy to make, given the patient's clinical history, complete blood count, peripheral smear, and iron studies. We report-eight cases of Hb H disease in the United States in which the diagnosis was hampered by the absence of Hb H on the alkaline hemoglobin electrophoresis gel. We also provide recommendations to help ensure diagnosis of Hb H disease. RP HALL, RB (reprint author), WILFORD HALL USAF MED CTR,DEPT PATHOL,PSLC,2200 BERGQUIST DR,STE 1,LACKLAND AFB,TX 78236, USA. NR 0 TC 5 Z9 5 U1 0 U2 0 PU AMER SOC CLIN PATHOLOGISTS PI CHICAGO PA 2100 W HARRISON ST, CHICAGO, IL 60612 SN 0007-5027 J9 LAB MED JI Lab. Med. PD NOV PY 1995 VL 26 IS 11 BP 736 EP 742 PG 7 WC Medical Laboratory Technology SC Medical Laboratory Technology GA TB269 UT WOS:A1995TB26900015 ER PT J AU Ostdiek, PH AF Ostdiek, PH TI Air force values MS degree SO LASER FOCUS WORLD LA English DT Letter RP Ostdiek, PH (reprint author), USAF,INST TECHNOL,WASHINGTON,DC 20330, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PENNWELL PUBL CO PI NASHUA PA 5TH FLOOR TEN TARA BOULEVARD, NASHUA, NH 03062-2801 SN 0740-2511 J9 LASER FOCUS WORLD JI Laser Focus World PD NOV PY 1995 VL 31 IS 11 BP 57 EP 57 PG 1 WC Optics SC Optics GA TP024 UT WOS:A1995TP02400016 ER PT J AU CARLSON, JL AF CARLSON, JL TI NATURE TRAVEL - HOLING,D SO LIBRARY JOURNAL LA English DT Book Review RP CARLSON, JL (reprint author), VANDENBERG AFB LIB,VANDENBERG AFB,CA, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU BOWKER MAGAZINE GROUP CAHNERS MAGAZINE DIVISION PI NEW YORK PA 249 W 17TH ST, NEW YORK, NY 10011 SN 0363-0277 J9 LIBR J JI Libr. J. PD NOV 1 PY 1995 VL 120 IS 18 BP 96 EP 96 PG 1 WC Information Science & Library Science SC Information Science & Library Science GA TB761 UT WOS:A1995TB76100206 ER PT J AU SEMIATIN, SL SMITH, PR AF SEMIATIN, SL SMITH, PR TI MICROSTRUCTURAL EVOLUTION DURING ROLLING OF TI-22AL-23NB SHEET SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article DE MICROSTRUCTURE; HOT PACK ROLLING; TI-22AL-23NB AB The evolution of microstructure during hot pack rolling of the orthorhombic titanium aluminide alloy Ti-22Al-23Nb was investigated. The starting material was a prior hot-rolled sheet with an elongated ordered beta (B2) grain structure whose grain boundaries were decorated with orthorhombic (O) phase. Two different types of rolling schedule were utilized, one consisting of rolling below the beta (B2) transus alone and the other comprising supertransus preheating (in order to dissolve the second phase) followed by rolling through the transus under decreasing temperature conditions. For both schedules, the rolled structure consisted of elongated beta (B2) grains and a fine dispersion of second-phase (O) particles. The absence of recrystallization of the B2 grains, particularly for sequences involving supertransus preheating, was explained by measurement of the precipitation kinetics for the second phase. These measurements indicated very rapid grain boundary precipitation, even close to the transus, an effect that leads to the pinning of the beta (B2) grain boundaries. RP SEMIATIN, SL (reprint author), USAF,WRIGHT LAB,MLLN,MAT DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433, USA. RI SEMIATIN, SHELDON/E-7264-2017 NR 13 TC 16 Z9 18 U1 1 U2 4 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD NOV 1 PY 1995 VL 202 IS 1-2 BP 26 EP 35 DI 10.1016/0921-5093(95)80043-3 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TB866 UT WOS:A1995TB86600004 ER PT J AU BISHOFF, JT THOMPSON, IM AF BISHOFF, JT THOMPSON, IM TI COMMISSARY TOBACCO SALES - THE ELIMINATION OF A HISTORIC ARTIFACT SO MILITARY MEDICINE LA English DT Editorial Material RP BISHOFF, JT (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,SAN ANTONIO,TX 78236, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASSN MILITARY SURG US PI BETHESDA PA 9320 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0026-4075 J9 MIL MED JI Milit. Med. PD NOV PY 1995 VL 160 IS 11 BP 543 EP 544 PG 2 WC Medicine, General & Internal SC General & Internal Medicine GA TE046 UT WOS:A1995TE04600001 PM 8538885 ER PT J AU PARKER, JE GRUBBS, TR KIEL, JL AF PARKER, JE GRUBBS, TR KIEL, JL TI INDIRECT UP-REGULATION OF HIV-CAT BY GAMMA-INTERFERON AND LIPOPOLYSACCHARIDE SO MOLECULAR BIOLOGY OF THE CELL LA English DT Meeting Abstract C1 USAF,ARMSTRONG LAB,DIV RADIOFREQUENCY RADIAT,BROOKS AFB,TX 78235. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER SOC CELL BIOL PI BETHESDA PA PUBL OFFICE 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 1059-1524 J9 MOL BIOL CELL JI Mol. Biol. Cell PD NOV PY 1995 VL 6 SU S BP 1372 EP 1372 PG 1 WC Cell Biology SC Cell Biology GA TF513 UT WOS:A1995TF51301371 ER PT J AU WARD, JB HEDGES, TR HEGGERICK, PA AF WARD, JB HEDGES, TR HEGGERICK, PA TI REVERSIBLE ABNORMALITIES IN THE OPHTHALMIC ARTERIES DETECTED BY COLOR DOPPLER IMAGING SO OPHTHALMOLOGY LA English DT Article ID OCULAR ISCHEMIC SYNDROME AB Purpose: To demonstrate dynamic, reversible abnormalities in ophthalmic artery blood flow velocity identified with color Doppler imaging (CDI) in patients with clinical findings of ocular ischemia with and without carotid artery stenosis. Methods: One patient with ocular ischemia and normal carotid arteries had abnormal ophthalmic artery velocities demonstrated by CDI. Two other patients with reversed ophthalmic artery flow and critical internal carotid artery stenosis were studied before and after carotid endarterectomy. Peak systolic and diastolic velocities as well as pulsatility indices of ophthalmic, posterior ciliary, and central retinal arteries were calculated. Results: The patient who had ocular ischemic syndrome without carotid artery stenosis showed increased ophthalmic artery velocities initially, and reversal of flow within the ophthalmic artery subsequently developed. Clinical findings and symptoms improved gradually as ophthalmic artery, posterior ciliary, and central retinal artery velocities increased. The patients with critical internal carotid artery stenosis had reversed ophthalmic artery blood flow initially which reverted to normal after carotid endarterectomy. Conclusion: Ocular ischemic syndrome may occur due to abnormal blood flow in the ophthalmic artery in the absence as well as in the presence of carotid artery stenosis. Flow dynamics in the ophthalmic artery and its branches can be shown by CDI to revert toward normal as the clinical findings improve spontaneously or after opening an occluded carotid artery. C1 TUFTS UNIV,SCH MED,NEW ENGLAND EYE CTR,NEUROOPHTHALMOL SERV,BOSTON,MA 02111. WILFORD HALL USAF MED CTR,DEPT OPHTHALMOL,LACKLAND AFB,SAN ANTONIO,TX. NR 12 TC 16 Z9 16 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0161-6420 J9 OPHTHALMOLOGY JI Ophthalmology PD NOV PY 1995 VL 102 IS 11 BP 1606 EP 1610 PG 5 WC Ophthalmology SC Ophthalmology GA TD883 UT WOS:A1995TD88300013 PM 9098250 ER PT J AU MASTERS, LT MARK, MB DUNCAN, BD AF MASTERS, LT MARK, MB DUNCAN, BD TI ANALYSIS OF LADAR RANGE RESOLUTION ENHANCEMENT BY SINUSOIDAL PHASE MODULATION SO OPTICAL ENGINEERING LA English DT Article DE OPTICAL REMOTE SENSING AND IMAGE PROCESSING; LADAR; PHASE MODULATION; PULSE COMPRESSION; MATCHED FILTERING; AMBIGUITY FUNCTION; RANGE RESOLUTION AB The ability of a radar system to resolve two or more separate returns from a combined echo is related to the effective correlation band-width of the pulse emitted by the ladar system. Phase modulation of an outgoing pulse introduces additional frequency components, which increases the effective correlation bandwidth of the pulse and thus improves the range resolution of the system. In this paper, we discuss the general theoretical basis for achieving improved range resolution using a modulated waveform and a matched filter receiver. We then demonstrate these concepts by considering the particular case of improved range resolution for a sinusoidally phase modulated carrier with a rectangular amplitude function. We also perform computer simulations with a realistic pulsed ladar envelope possessing the same modulation function. Our calculations indicate that the resolution of a pulsed ladar system may be improved by a factor of 70 with a phase-modulated pulse and a matched-filter receiver. C1 WRIGHT LAB,ELECTROOPT SENSORS GRP,WRIGHT PATTERSON AFB,OH 45433. RP MASTERS, LT (reprint author), UNIV DAYTON,CTR ELECTROOPT,300 COLL PK,DAYTON,OH 45469, USA. NR 18 TC 2 Z9 2 U1 1 U2 2 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1995 VL 34 IS 11 BP 3115 EP 3121 DI 10.1117/12.213591 PG 7 WC Optics SC Optics GA TF307 UT WOS:A1995TF30700005 ER PT J AU JACOB, DK MARK, MB DUNCAN, BD AF JACOB, DK MARK, MB DUNCAN, BD TI HETERODYNE LADER SYSTEM EFFICIENCY ENHANCEMENT USING SINGLE-MODE OPTICAL-FIBER MIXERS SO OPTICAL ENGINEERING LA English DT Article DE OPTICAL REMOTE SENSING AND IMAGE PROCESSING; LADAR; LIDAR; HETERODYNE; SINGLE-MODE FIBERS; LASER SPECKLE ID TARGET AB A theoretical performance analysis of a heterodyne radar system incorporating a single-mode fiber receiver has been performed. For our purposes, the performance parameters of interest are the coupling and mixing efficiency of the ladar receiver, as they relate to the overall system carrier-to-noise ratio. For a receiver incorporating a single-mode fiber mixer, the received and local-oscillator fields are matched both spatially and temporally at the detector, yielding 100% mixing efficiency. We have therefore focused our efforts on determining an expression for the efficiency with which a diffuse return from a purely speckle target can be coupled into the receiving leg of a monostatic, untruncated cw radar system. Through numerical analysis, the expected coupling efficiency for a ladar system with negligible truncation of the transmit beam has been determined to be 30.6%. C1 WRIGHT LAB,ELECTROOPT SENSORS GRP,WRIGHT PATTERSON AFB,OH 45433. RP JACOB, DK (reprint author), UNIV DAYTON,CTR ELECTROOPT,300 COLLEGE PK,DAYTON,OH 45469, USA. NR 19 TC 6 Z9 8 U1 0 U2 3 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1995 VL 34 IS 11 BP 3122 EP 3129 DI 10.1117/12.213594 PG 8 WC Optics SC Optics GA TF307 UT WOS:A1995TF30700006 ER PT J AU WILSON, TA ROGERS, SK MYERS, LR AF WILSON, TA ROGERS, SK MYERS, LR TI PERCEPTUAL-BASED HYPERSPECTRAL IMAGE FUSION USING MULTIRESOLUTION ANALYSIS SO OPTICAL ENGINEERING LA English DT Article DE OPTICAL REMOTE SENSION; IMAGE PROCESSING; HYPERSPECTRAL IMAGE FUSION; PERCEPTUAL-BASED IMAGE FUSION; MULTIRESOLUTION; WAVELETS; MULTISENSOR FUSION ID CONTRAST AB A perceptual-based multiresolution image fusion technique is demonstrated using the Airborne Visible and Infrared Imaging Spectrometer (AVIRIS) hyperspectral sensor data. The AVIRIS sensor, which simultaneously collects information in 224 spectral bands that range from 0.4 to 2.5 mu m in approximately IO-nm increments, produces 224 images, each representing a single spectral band. The fusion algorithm consists of three stages. First, a Daubechies orthogonal wavelet basis set is used to perform a multiresolution decomposition of each spectral image. Next, the coefficients from each image are combined using a perceptual-based weighting. The weighting of each coefficient, from a given spectral band image, is determined by the spatial-frequency response (contrast sensitivity) of the human visual system. The spectral image with the higher saliency value, where saliency is based on a perceptual energy, will receive the larger weight. Finally, the fused coefficients are used for reconstruction to obtain the fused image. The image fusion algorithm is analyzed using test images with known image characteristics and image data from the AVIRIS hyperspectral sensor. By analyzing the signal-to-noise ratios and visual aesthetics of the fused images, contrast-sensitivity-based fusion is shown to provide excellent fusion results and to outperform previous fusion methods. RP WILSON, TA (reprint author), USAF, INST TECHNOL, DEPT ELECT & COMP ENGN, 2950 P ST, WRIGHT PATTERSON AFB, DAYTON, OH 45433 USA. NR 23 TC 61 Z9 75 U1 2 U2 6 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1995 VL 34 IS 11 BP 3154 EP 3164 DI 10.1117/12.213617 PG 11 WC Optics SC Optics GA TF307 UT WOS:A1995TF30700010 ER PT J AU BARNARD, KJ WATSON, EA AF BARNARD, KJ WATSON, EA TI EFFECTS OF IMAGE NOISE ON SUBMICROSCAN INTERPOLATION SO OPTICAL ENGINEERING LA English DT Article DE OPTICAL REMOTE SENSING; IMAGE PROCESSING; SUBMICROSCANNING; LIQUID CRYSTALS; BEAM STEERING; INTERLACED SAMPLING; INTERPOLATION; IMAGING AB The submicroscan interpolation image-processing technique is analyzed to determine the effects of additive noise on the quality of the output imagery. Both temporal and fixed-pattern spatial noise are evaluated assuming a white Gaussian noise model. Closed-form solutions for the power spectral density of the output noise are derived for both one- and two-dimensional submicroscanning. It is found that temporal noise degrades the output imagery and determines the minimum usable submicroscan image shift. For the case of fixed-pattern noise, submicroscan interpolation causes a spectral redistribution of the noise power spectrum that tends to improve image quality. C1 USAF,WRIGHT LAB,ELECTROOPT BRANCH,DAYTON,OH 45433. RP BARNARD, KJ (reprint author), HN BURNS ENGN CORP,3275 PROGRESS DR,SUITE A,ORLANDO,FL 32826, USA. NR 7 TC 3 Z9 3 U1 0 U2 0 PU SOC PHOTO-OPT INSTRUM ENG PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 SN 0091-3286 J9 OPT ENG JI Opt. Eng. PD NOV PY 1995 VL 34 IS 11 BP 3165 EP 3173 DI 10.1117/12.213572 PG 9 WC Optics SC Optics GA TF307 UT WOS:A1995TF30700011 ER PT J AU MCGLOHN, SE BOSTWICK, JM AF MCGLOHN, SE BOSTWICK, JM TI SERTRALINE WITH METHYLPHENIDATE IN AN ICU PATIENT SO PSYCHOSOMATICS LA English DT Letter ID REFRACTORY DEPRESSION; FLUOXETINE RP MCGLOHN, SE (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,SAN ANTONIO,TX 78236, USA. NR 5 TC 6 Z9 6 U1 0 U2 0 PU AMER PSYCHIATRIC ASSOCIATION PI WASHINGTON PA 1400 K ST NW, WASHINGTON, DC 20005 SN 0033-3182 J9 PSYCHOSOMATICS JI Psychosomatics PD NOV-DEC PY 1995 VL 36 IS 6 BP 584 EP 585 PG 2 WC Psychiatry; Psychology SC Psychiatry; Psychology GA TC559 UT WOS:A1995TC55900014 PM 7501791 ER PT J AU MCGILLEN, DJ AF MCGILLEN, DJ TI A PARTICLE SCHEME INCORPORATING AN ELLIPTIC APPROXIMATION FOR THE RELATIVISTIC VLASOV-MAXWELL SYSTEM SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article DE VLASOV-MAXWELL SYSTEM; PARTICLE METHOD; COLLISIONLESS PLASMA ID EQUATIONS AB Computational results from a new scheme for computing solutions to the initial value problem for a novel approximation of the one-space, two-momenta version of the relativistic Vlasov-Maxwell system (RVM) are presented. The approximation replaces the hyperbolic Maxwell system with one that is elliptic in nature (for each fixed t). Output from this algorithm is directly compared to that from an existing code for approximating solutions of (RVM). Solutions are seen to converge at the asymptotic rate of 1/c(2) as the speed of light c (treated as a parameter) tends to infinity. The elliptic nature of the equations satisfied by the electric and magnetic fields in the approximation allows considerable savings in computation time. Comparable accuracy is achieved with the scheme for the approximation using time steps 16 times larger than those useable in the algorithm for (RVM), where step size is severely limited by the Courant-Friedrich-Lewy condition. RP MCGILLEN, DJ (reprint author), USAF ACAD,DEPT MATH SCI,COLORADO SPRINGS,CO 80840, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD NOV PY 1995 VL 16 IS 6 BP 1333 EP 1348 DI 10.1137/0916077 PG 16 WC Mathematics, Applied SC Mathematics GA TB240 UT WOS:A1995TB24000006 ER PT J AU CESPEDES, RD PERETSMAN, SJ THOMPSON, IM JACKSON, C AF CESPEDES, RD PERETSMAN, SJ THOMPSON, IM JACKSON, C TI PROTECTION OF THE GERMINAL EPITHELIUM IN THE RAT FROM THE CYTOTOXIC EFFECTS OF CHEMOTHERAPY BY A LUTEINIZING-HORMONE-RELEASING HORMONE AGONIST AND ANTIANDROGEN THERAPY SO UROLOGY LA English DT Article ID MOUSE TESTIS; SPERMATOGENESIS; PROCARBAZINE; FERTILITY; FLUTAMIDE; ANDROGEN; ANALOGS; DAMAGE; CELLS AB Objectives. The protection of spermatogenesis during chemotherapy using an antiandrogen and a luteinizing hormone-releasing hormone (LHRH) agonist was examined in the rat. Previous studies using LHRH agonists alone have been inconclusive, as both protective and deleterious effects on the germinal epithelium have been reported. Flutamide has not previously been used in this manner but theoretically should protect the germinal epithelium, since flutamide rapidly blocks testosterone at the cellular level and also minimizes the testosterone ''flare'' when LHRH agonist therapy is initiated. Methods. Mature Sprague-Dawley rats were pretreated with flutamide, sustained-release goserelin acetate (Zoladex), or a combination of flutamide and sustained-release goserelin acetate for 14 days before 4 weekly doses of procarbazine were initiated. The seminiferous tubules were evaluated histologically after a 90-day regeneration period using the stem cell assay test. Results. After treatment with procarbazine alone, only 43% of the seminiferous tubules were active; however, 80% were active if protected with flutamide, 91% if protected with sustained-release goserelin acetate, and 95% if protected with both flutamide and goserelin acetate. Conclusions. Flutamide, sustained-release goserelin acetate, and a combination of these agents were effective in protecting the germinal epithelium of the rat during chemotherapy. A combination of flutamide and goserelin acetate provided the best protection. This study demonstrates for the first time the protective effect of flutamide and flutamide with goserelin acetate on the germinal epithelium during chemotherapy. C1 WILFORD HALL USAF MED CTR,DEPT CLIN INVEST,SAN ANTONIO,TX 78236. BROOKE ARMY MED CTR,DEPT UROL,SAN ANTONIO,TX. RP CESPEDES, RD (reprint author), WILFORD HALL USAF MED CTR,DEPT UROL,SAN ANTONIO,TX 78236, USA. NR 18 TC 5 Z9 5 U1 0 U2 1 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0090-4295 J9 UROLOGY JI UROLOGY PD NOV PY 1995 VL 46 IS 5 BP 688 EP 691 PG 4 WC Urology & Nephrology SC Urology & Nephrology GA TE466 UT WOS:A1995TE46600016 PM 7495122 ER PT J AU GRANT, SM AF GRANT, SM TI A REVOLUTIONARY WAR - KOREA AND THE TRANSFORMATION OF THE POSTWAR WORLD - WILLIAMS,WJ SO WAR IN HISTORY LA English DT Book Review RP GRANT, SM (reprint author), USAF,WASHINGTON,DC 20330, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU EDWARD ARNOLD PUBL LTD PI LONDON PA 338 EUSTON ROAD, LONDON, ENGLAND NW1 3BH SN 0968-3445 J9 WAR HIST JI War Hist. PD NOV PY 1995 VL 2 IS 3 BP 370 EP 372 DI 10.1177/096834459500200317 PG 3 WC History; International Relations SC History; International Relations GA TJ516 UT WOS:A1995TJ51600018 ER PT J AU GlickmanWeiss, EL Hegsted, M Nelson, AG Hearon, CM Dunbar, CC Tulley, R AF GlickmanWeiss, EL Hegsted, M Nelson, AG Hearon, CM Dunbar, CC Tulley, R TI A comparison of a carbohydrate-electrolyte beverage versus a placebo beverage in maintaining thermoregulatory and blood homeostasis during the training of fire fighters SO WILDERNESS & ENVIRONMENTAL MEDICINE LA English DT Article DE blood glucose; performance; fatigue; fire fighter; thermoregulation; fluid replacement ID CYCLING PERFORMANCE; PROLONGED EXERCISE; HEAT; DEHYDRATION; INGESTION; RESPONSES; FEEDINGS; FATIGUE AB The efficacy of ingesting carbohydrate-electrolyte (GP) beverages during intermittent and protracted aerobic exercise has been clearly demonstrated. Therefore, the present investigation focused on the practical application of ingesting GP beverages during intermittent fire fighting. This investigation included the determination of the efficacy of a carbohydrate-electrolyte beverage in maintaining blood and temperature homeostasis during fire-fighter training. Healthy fire fighters (n = 7, age 31.5-37.5 years) volunteered for participation. Subjects completed two field tests in which they consumed either 473 ml of a placebo (P = non-nutrient beverage) or GP beverage (7% glucose polymers) at baseline and every 30 min during a 120-min fire-fighting training session. The experimental design was double blind. Venous blood samples were drawn pretest, midtest, and posttest and analyzed for [hematocrit], [glucose], [Na+], [K+], cortisol, and osmolality. Heart rate (HR) was determined via a bolter monitor. Rating of perceived exertion (RPE) via the Borg 15-point scale and oral temperature were also measured. Analysis of variance revealed no significant differences across time or between beverages in maintaining blood electrolyte or temperature homeostasis. Cortisol, RPE, and HR increased (p < .05) as work increased. The GP beverage did not provide any significant physiological benefits to fire fighters during intermittent training. C1 LOUISIANA STATE UNIV,DEPT HUMAN ECOL,BATON ROUGE,LA 70803. LOUISIANA STATE UNIV,DEPT KINESIOL,BATON ROUGE,LA 70803. ARMSTRONG LAB,KRUG LIFE SCI,BROOKS AFB,TX 78235. CUNY BROOKLYN COLL,DEPT PHYS EDUC,BROOKLYN,NY 11210. PENNINGTON BIOMED RES CTR,BATON ROUGE,LA. RP GlickmanWeiss, EL (reprint author), KENT STATE UNIV,SCH EXERCISE LEISURE & SPORT,163E MACC ANNEX,KENT,OH 44242, USA. NR 28 TC 1 Z9 1 U1 0 U2 2 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 1080-6032 J9 WILD ENVIRON MED JI Wildern. Environ. Med. PD NOV PY 1995 VL 6 IS 4 BP 377 EP 384 DI 10.1580/1080-6032(1995)006[0377:ACOACE]2.3.CO;2 PG 8 WC Public, Environmental & Occupational Health; Sport Sciences SC Public, Environmental & Occupational Health; Sport Sciences GA TN551 UT WOS:A1995TN55100002 ER PT J AU KARUNASIRI, G PARK, JS CHEN, J SHIH, R SCHEIHING, JF DODD, MA AF KARUNASIRI, G PARK, JS CHEN, J SHIH, R SCHEIHING, JF DODD, MA TI NORMAL INCIDENT INGAAS/GAAS MULTIPLE-QUANTUM-WELL INFRARED DETECTOR USING ELECTRON INTERSUBBAND TRANSITIONS SO APPLIED PHYSICS LETTERS LA English DT Article ID ABSORPTION; PHOTODETECTORS AB A normal incident infrared detector has been fabricated using electron intersubband transition in a InGaAs/GaAs quantum well structure. With the light polarized in the plane of the layers (normal incident) a nominally forbidden absorption peak was observed. Such an absorption is most likely a result of spin-flip intersubband transitions induced by the spin-orbit coupling. In addition, for the light polarized in the plane of incidence, the usual intersubband absorption due to envelope function transition is observed. The responsivity of 0.2 A/W was obtained for the normal incident infrared on the detector. This work demonstrates the fabrication of high sensitivity quantum well infrared detectors operating in the normal incident mode without fabricating grating structures on the device for focal plane applications. (C) 1995 American Institute of Physics. C1 ALPHA PHOTON,EL MONTE,CA 91731. WRIGHT LAB,SOLID STATE DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 18 TC 44 Z9 45 U1 0 U2 5 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD OCT 30 PY 1995 VL 67 IS 18 BP 2600 EP 2602 DI 10.1063/1.115144 PG 3 WC Physics, Applied SC Physics GA TB959 UT WOS:A1995TB95900006 ER PT J AU HILL, SC PINNICK, RG NACHMAN, P CHEN, G CHANG, RK MAYO, MW FERNANDEZ, GL AF HILL, SC PINNICK, RG NACHMAN, P CHEN, G CHANG, RK MAYO, MW FERNANDEZ, GL TI AEROSOL-FLUORESCENCE SPECTRUM ANALYZER - REAL-TIME MEASUREMENT OF EMISSION-SPECTRA OF AIRBORNE BIOLOGICAL PARTICLES SO APPLIED OPTICS LA English DT Article ID PROTEIN TRYPTOPHAN FLUORESCENCE; STEADY-STATE; DECAY CHARACTERISTICS; RESONANCES; BACTERIA; RATES AB We have assembled an aerosol-fluorescence spectrum analyzer (AFS), which can measure the fluorescence spectra and elastic scattering of airborne particles as they flow through a laser beam. The aerosols traverse a scattering cell where they are illuminated with intense (50 kW/cm(2)) light inside the cavity of an argon-ion laser operating at 488 nm. This AFS can obtain fluorescence spectra of individual dye-doped polystyrene microspheres as small as 0.5 mu m in diameter. The spectra obtained from microspheres doped with pink and green-yellow dyes are clearly different. We have also detected the fluorescence spectra of airborne particles (although not single particles) made from various biological materials, e.g., Bacillus subtilis spores, B. anthrasis spores, riboflavin, and tree leaves. The AFS may be useful in detecting and characterizing airborne bacteria and other airborne particles of biological origin. (C) 1995 Optical Society of America C1 YALE UNIV,DEPT APPL PHYS,NEW HAVEN,CT 06520. YALE UNIV,CTR LASER DIAGNOST,NEW HAVEN,CT 06520. USAF,ARMSTRONG LAB,EDGEWOOD RES DEV & ENGN CTR,ABERDEEN PROVING GROUND,MD 21010. NEW MEXICO STATE UNIV,DEPT PHYS,LAS CRUCES,NM 88003. RP HILL, SC (reprint author), USA,RES LAB,WHITE SANDS MISSILE RANGE,NM 88002, USA. NR 34 TC 48 Z9 50 U1 2 U2 13 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD OCT 20 PY 1995 VL 34 IS 30 BP 7149 EP 7155 PG 7 WC Optics SC Optics GA RZ268 UT WOS:A1995RZ26800042 PM 21060577 ER PT J AU SUTHERLAND, JP YASZEMSKI, MJ WHITE, AA AF SUTHERLAND, JP YASZEMSKI, MJ WHITE, AA TI RADIOGRAPHIC APPEARANCE OF THE ODONTOID LATERAL MASS INTERSPACE IN THE OCCIPITOATLANTOAXIAL COMPLEX SO SPINE LA English DT Article; Proceedings Paper CT Cervical-Spine-Research-Society 22nd Annual Meeting CY NOV 30-DEC 02, 1994 CL BALTIMORE, MD SP Cervical Spine Res Soc AB Study Design. This is an anatomic study in which the odontoid lateral mass interspace is evaluated radiographically in various positions of upper cervical spine rotation. Objectives, The objectives are to determine whether odontoid lateral mass interspace asymmetry exists in the ligamentously intact cervical spine and to define odontoid lateral mass interspace behavior during atlantoaxial rotation. Summary of Background Data. Controversy exists regarding the behavior of the odontoid lateral mass interspace during atlantoaxial rotation. The meaning of interspace asymmetry varies depending on the author and the method of study. Atlas fractures account for 7% of cervical spine fractures and are frequently associated with other cervical fractures, so an understanding of the radiographic anatomy is crucial to the evaluation of these patients. Methods, Ten human cadaveric cervical spines were dissected of all but ligamentous soft tissue and were mounted and prepared for radiographic study in neutral position and in varying degrees of right and left rotation. Radiographs were evaluated for odontoid lateral mass interspace asymmetry in neutral and in rotated positions, and data were analyzed. Results. Measurable asymmetry could be shown when comparing neutral positions and when comparing rotated with neutral positions. A statistically significant difference could not be proven in this asymmetry, although clinical significance is suggested by the analysis of the data. Conclusion. Measurable asymmetry can be present in the neutrally positioned, ligamentously intact atlantoaxial complex and is not necessarily indicative of instability. This agrees with the concept of the ''neutral zone'' as described by White and Panjabi in Clinical Biomechanics of the Spine.(21) There is a trend for increasing odontoid lateral mass interspace on the side to which the head is rotated, and this odontoid lateral mass interspace is measurably different from the contralateral odontoid lateral mass interspace, indicating that odontoid lateral mass interspace asymmetry is not a good indicator for cervical instability in the otherwise asymptomatic individual. C1 WILFORD HALL USAF MED CTR,LACKLAND AFB,TX 78236. F EDWARD HERBERT SCH MED,LACKLAND AFB,TX. HARVARD UNIV,SCH MED,DEPT ORTHOPAED SURG,BOSTON,MA. BETH ISRAEL HOSP,DIV SPINAL SURG,BOSTON,MA 02215. NR 0 TC 8 Z9 10 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0362-2436 J9 SPINE JI SPINE PD OCT 15 PY 1995 VL 20 IS 20 BP 2221 EP 2225 DI 10.1097/00007632-199510001-00008 PG 5 WC Clinical Neurology; Orthopedics SC Neurosciences & Neurology; Orthopedics GA TA671 UT WOS:A1995TA67100008 PM 8545716 ER PT J AU LEE, J AF LEE, J TI IMPROVING THE EQUIVALENT LINEARIZATION TECHNIQUE FOR STOCHASTIC DUFFING OSCILLATORS SO JOURNAL OF SOUND AND VIBRATION LA English DT Letter ID NON-LINEAR OSCILLATORS; RANDOM VIBRATION; CLOSURE RP USAF, WRIGHT LAB, FIB, WRIGHT PATTERSON AFB, OH 45433 USA. NR 19 TC 8 Z9 8 U1 0 U2 0 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0022-460X EI 1095-8568 J9 J SOUND VIB JI J. Sound Vibr. PD OCT 12 PY 1995 VL 186 IS 5 BP 846 EP 855 DI 10.1006/jsvi.1995.0492 PG 10 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA TB932 UT WOS:A1995TB93200009 ER PT J AU GIANINO, PD WOODS, CL HORNER, JL AF GIANINO, PD WOODS, CL HORNER, JL TI ANALYSIS OF SPATIAL LIGHT-MODULATOR CONTRAST RATIOS AND OPTICAL CORRELATION SO APPLIED OPTICS LA English DT Article ID GENERAL TREATMENT; FILTERS; CAMERAS AB We have performed a general analysis of optical correlators with spatal light modulators (SLM's) whose primary defect is a finite contrast ratio (CR). Our mathematical analysis identifies three noise terms that appear in addition to the correlation term. The filter SLM contains either a phase-only filter (POF) or a binary-phase-only filter (BPOF). Insertion of a de block at the center of the filter SLM decreases the noise background in the correlator plane; this de block is larger than that required for the same level of performance in a correlator whose SLM's have transmissive (or reflective) dead zones. With a noise-free input and the de block, our computer simulations that show the peak intensity falling off as the CR decreases are in quantitative agreement with the correlation term of the mathematical model. For a cluttered, disjoint noise input this agreement is only qualitative, and at low CR's the de block is definitely required for the BPOF correlator if the secondary peaks in the output are to be brought below the correlation peak. RP GIANINO, PD (reprint author), USAF,ROME LAB,BEDFORD,MA 01731, USA. NR 26 TC 5 Z9 5 U1 0 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD OCT 10 PY 1995 VL 34 IS 29 BP 6682 EP 6694 PG 13 WC Optics SC Optics GA RX164 UT WOS:A1995RX16400008 PM 21060523 ER PT J AU RADICK, RR LOCKWOOD, GW SKIFF, BA THOMPSON, DT AF RADICK, RR LOCKWOOD, GW SKIFF, BA THOMPSON, DT TI A 12 YEAR PHOTOMETRIC-STUDY OF LOWER MAIN-SEQUENCE HYADES STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE OPEN CLUSTERS AND ASSOCIATIONS, INDIVIDUAL (HYADES); STARS, ACTIVITY; STARS, LATE-TYPE; STARS, ROTATION ID SOLAR-TYPE STARS; ROTATIONAL VELOCITIES; FOURIER-ANALYSIS; TIME-SERIES; SPACED DATA; VARIABILITY; CONVECTION AB Between late 1980 and early 1992, we obtained differential Stomgren b and y photometric observations of 13 Hyades stars, spectral types F5 V to K4 V. The observations achieved and sustained millimagnitude precision. All 10 G- and K-type stars in our sample varied on timescales ranging from days to years. These 10 stars tended to show stronger night-to-night variation, and they also tended to be redder, during seasons when they were fainter. Rotational modulation proved to be a prominent component of the night-to-night variation. C1 LOWELL OBSERV,FLAGSTAFF,AZ 86001. RP RADICK, RR (reprint author), USAF,NATL SOLAR OBSERV,PHILLIPS LAB,SOLAR RES BRANCH,SUNSPOT,NM 88349, USA. NR 29 TC 41 Z9 41 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD OCT 10 PY 1995 VL 452 IS 1 BP 332 EP 345 DI 10.1086/176305 PN 1 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA RX157 UT WOS:A1995RX15700031 ER PT J AU GANNON, RL CATO, MJ KELLEY, KH ARMSTRONG, DL REA, MA AF GANNON, RL CATO, MJ KELLEY, KH ARMSTRONG, DL REA, MA TI GABAERGIC MODULATION OF OPTIC NERVE-EVOKED FIELD POTENTIALS IN THE RAT SUPRACHIASMATIC NUCLEUS SO BRAIN RESEARCH LA English DT Article DE HYPOTHALAMUS; BRAIN SLICE; GAMMA-AMINOBUTYRIC ACID; CIRCADIAN RHYTHM ID CIRCADIAN-RHYTHM; GABAB RECEPTORS; NEURONS; HAMSTER; STIMULATION; SEROTONIN; BICUCULLINE; MONOAMINES; RESPONSES; AGONISTS AB The suprachiasmatic nuclei (SCN) at the base of the hypothalamus are known to be the site of the endogenous circadian pacemaker in mammals. The SCN are innervated by the retinohypothalamic tract, which conveys photic information to the SCN. GABA is one of the most abundant neurotransmitters in the SCN, and has been implicated in the modulation of photic responses of the SCN circadian pacemaker. This study sought to examine the effect of GABAergic compounds on optic nerve-evoked SCN field potentials recorded in rat horizontal hypothalamic slices. The GABA(A) agonist muscimol (10 mu M) potentiated SCN field potentials by 23%, while application of the GABA(A) antagonist bicuculline (10 mu M) inhibited SCN field potentials by a similar amount, (22%). Conversely, the GABA(B) agonist baclofen (1.0 mu M) inhibited SCN field potentials by 48%, while the GABA(B) antagonist phaclofen (0.5 mM) augmented SCN field potentials by 62%. Recordings performed at both day and night times indicate that there were no qualitative day-night differences in GABAergic activity on SCN field potentials. This study concludes that, in general, GABA(A) activity tends to increase, and GABA(B) activity tends to decrease the response of SCN neurons to optic nerve stimulation. C1 CFTO,BIOL RHYTHMS & INTEGRAT NEUROSCI RES INST,ARMSTRONG LAB,BROOKS AFB,TX 78235. UNIV TEXAS,DIV LIFE SCI,SAN ANTONIO,TX 78285. NR 32 TC 16 Z9 16 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0006-8993 J9 BRAIN RES JI Brain Res. PD OCT 2 PY 1995 VL 694 IS 1-2 BP 264 EP 270 DI 10.1016/0006-8993(95)00854-J PG 7 WC Neurosciences SC Neurosciences & Neurology GA RZ291 UT WOS:A1995RZ29100031 PM 8974653 ER PT J AU ELDRED, MS VENKAYYA, VB ANDERSON, WJ AF ELDRED, MS VENKAYYA, VB ANDERSON, WJ TI MODE TRACKING ISSUES IN STRUCTURAL OPTIMIZATION SO AIAA JOURNAL LA English DT Article ID EIGENVECTOR DERIVATIVES AB Within the context of optimization of the structural dynamics properties of finite element models, methodology is developed for the tracking of eigenpairs through changes in the structural eigenvalue problem. The goal is to eliminate difficulties caused by ''mode switching'' (i.e., frequency crossing), Out of several candidate methods, two methods for mode tracking are successful. The first method, the higher order eigenpair perturbation algorithm, is based on a perturbation expansion of the eigenproblem. It iteratively computes changes in the eigenpairs due to parameter perturbations with the important feature of maintaining the correspondence between the baseline and perturbed eigenpairs. The second method is a cross-orthogonality check method, which uses mass orthogonality to reestablish correspondence after a standard reanalysis. Modified eigenpair extraction routines (Lanezos, subspace iteration, inverse power) were unsuccessful in tracking modes. Applications of mode tracking technology that are presented are frequency-constrained optimization and optimization with mode shape constraints. Each application procedure is outlined and examples are given. Recommendations are made based on method efficiency and robustness in the example problems. C1 UNIV MICHIGAN,ANN ARBOR,MI 48109. USA,AEROFLIGHTDYNAM DIRECTORATE,WRIGHT PATTERSON AFB,OH 45433. NR 18 TC 26 Z9 26 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD OCT PY 1995 VL 33 IS 10 BP 1926 EP 1933 DI 10.2514/3.12747 PG 8 WC Engineering, Aerospace SC Engineering GA RY965 UT WOS:A1995RY96500023 ER PT J AU NOLAN, CR SAENZ, KP THOMAS, CA MURPHY, KD AF NOLAN, CR SAENZ, KP THOMAS, CA MURPHY, KD TI ROLE OF THE EOSINOPHIL IN CHRONIC VASCULAR REJECTION OF RENAL-ALLOGRAFTS SO AMERICAN JOURNAL OF KIDNEY DISEASES LA English DT Article DE EOSINOPHIL; CHRONIC REJECTION; VASCULAR SMOOTH MUSCLE; THYMIDINE INCORPORATION; EPIFLUORESCENCE MICROSCOPY ID SMOOTH-MUSCLE CELLS; EXPRESSION; GROWTH; AUTOFLUORESCENCE; PROLIFERATION; HYPERTENSION; PROTEIN AB Obliterative arteriopathy in chronic renal allograft rejection is caused by intimal smooth muscle proliferation accompanied by infiltration of lymphocytes, monocytes, and eosinophils. We investigated the role of the eosinophil in chronic rejection. Twenty-four allograft nephrectomies were examined for the presence of eosinophils on hematoxylin-eosin-stained sections and using epifluorescence on Fisher-Giemsa-stained sections. Among 15 cases with chronic rejection, eosinophils were detected in 14 cases (93%) with epifluorescence compared with only six cases (40%) with hematoxylin-eosin staining (P = 0.005), With epifluorescence, eosinophils were identified in the intimal, adventitial, and tubulointerstitial compartments in 73%, 80%, and 87% of cases, respectively, To examine the pathogenic relevance of the eosinophils in the vessel wall, we investigated the effect of eosinophil-conditioned medium on DNA synthesis in cultured vascular smooth muscle cells, Autofluorescent eosinophils were isolated from atopic human donors using a fluorescence-activated cell sorter, Supernatant was collected from eosinophils (1 x 10(6)/mL) cultured overnight in medium with 0.5% fetal bovine serum, Incorporation of H-3-thymidine into DNA was measured in rat and human vascular smooth muscle cells treated for 24 hours with eosinophil-conditioned medium at 1:20, 1:10, 1:5, and 1:2 dilutions, Eosinophil-conditioned medium had a significant dose-dependent stimulatory effect on DNA synthesis in both cell lines, Our results indicate that eosinophil involvement in chronic renal allograft rejection is more common than previously recognized. The stimulatory effect of eosinophil-conditioned medium on vascular smooth muscle cell DNA synthesis suggests that eosinophils may be involved in the pathogenesis of the obliterative arteriopathy characteristically seen in chronic vascular rejection of renal allografts. (C) 1995 by the National Kidney Foundation, Inc. C1 UNIV TEXAS,HLTH SCI CTR,DEPT MICROBIOL,SAN ANTONIO,TX 78284. WILFORD HALL USAF MED CTR,DEPT PATHOL,LACKLAND AFB,TX 78236. RP NOLAN, CR (reprint author), UNIV TEXAS,HLTH SCI CTR,DEPT MED,DIV NEPHROL,7703 FLOYD CURL DR,SAN ANTONIO,TX 78284, USA. NR 31 TC 28 Z9 28 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0272-6386 J9 AM J KIDNEY DIS JI Am. J. Kidney Dis. PD OCT PY 1995 VL 26 IS 4 BP 634 EP 642 DI 10.1016/0272-6386(95)90601-0 PG 9 WC Urology & Nephrology SC Urology & Nephrology GA RY619 UT WOS:A1995RY61900012 PM 7573019 ER PT J AU GALLAY, BJ ALPERS, CE DAVIS, CL SCHULTZ, MF JOHNSON, RJ AF GALLAY, BJ ALPERS, CE DAVIS, CL SCHULTZ, MF JOHNSON, RJ TI GLOMERULONEPHRITIS IN RENAL-ALLOGRAFTS ASSOCIATED WITH HEPATITIS-C INFECTION - A POSSIBLE RELATIONSHIP WITH TRANSPLANT GLOMERULOPATHY IN 2 CASES SO AMERICAN JOURNAL OF KIDNEY DISEASES LA English DT Note DE HEPATITIS C VIRUS INFECTION; TRANSPLANTATION; INTERFERON ALPHA; TRANSPLANT GLOMERULOPATHY ID RECOMBINANT INTERFERON-ALFA; VIRUS-INFECTION; MIXED CRYOGLOBULINEMIA; HEMODIALYSIS-PATIENTS; CONTROLLED TRIAL; PREVALENCE AB Chronic infection with hepatitis C virus (HCV) has been identified as a cause of type I membranoproliferative glomerulonephritis (MPGN), HCV infection is common in patients with end-stage renal disease and may persist in renal allograft recipients, MPGN in the allograft may therefore be a manifestation of persistent HCV infection, We report two cases of glomerulopathy with features of both MPGN and transplant glomerulopathy in renal transplant patients chronically infected with HCV, We discuss the course of interferon alfa therapy in both patients as well as a possible relationship of HCV infection with transplant glomerulopathy (C) 1995 by the National Kidney Foundation, Inc. C1 UNIV WASHINGTON,MED CTR,DIV NEPHROL RM11,SEATTLE,WA 98195. UNIV WASHINGTON,MED CTR,DIV PATHOL,SEATTLE,WA 98195. USAF,MED CTR,DIV NEPHROL,LACKLAND AFB,TX 78236. NR 26 TC 50 Z9 50 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0272-6386 J9 AM J KIDNEY DIS JI Am. J. Kidney Dis. PD OCT PY 1995 VL 26 IS 4 BP 662 EP 667 DI 10.1016/0272-6386(95)90606-1 PG 6 WC Urology & Nephrology SC Urology & Nephrology GA RY619 UT WOS:A1995RY61900017 PM 7573024 ER PT J AU CARLSON, DW BARAD, JP PARSONS, MR AF CARLSON, DW BARAD, JP PARSONS, MR TI REDUCED VISION SECONDARY TO PIGMENTED CELLULAR MEMBRANES ON SILICONE INTRAOCULAR LENSES SO AMERICAN JOURNAL OF OPHTHALMOLOGY LA English DT Article ID POSTERIOR CHAMBER; IMPLANTATION; EYE AB PURPOSE: Visually significant, pigmented cellular membranes may form on intraocular lenses after implantation. We studied a series of patients to determine the onset, visual significance, treatment, and recurrent nature of these pigmented membranes in patients who underwent surgery with silicone lens implantation. METHODS: In nine eyes (eight patients) with visually significant pigmented cellular membranes on their Allergan Medical Optics (Irvine, California) silicone intraocular lenses (model SI18NGB or SI26NB), eight underwent combined phacoemulsification, intraocular lens implantation, and trabeculectomy; one underwent phacoemulsification and lens implantation only. We reviewed medical records to identify preoperative, operative, and postoperative similarities and differences in care. Clinical examinations and slit-lamp photographs, over an average of 21.3 +/- 7.2 months (range, 11 to 31 months), documented the effects of different treatment modalities. RESULTS: The patients sought treatment ten to 20 weeks (mean, 15 weeks) postoperatively. Except for the cellular membranes, each eye was without evidence of inflammation or cystoid macular edema. Subjective complaints decreased, and best-corrected Snellen visual acuity improved with topical corticosteroid therapy alone. Pretreatment best-corrected visual acuities ranged from 20/40 to 20/400 (mean, 20/70 using Snellen fractions) and improved two to eight (mean, five) Snellen lines, to a range of 20/20 to 20/50 (mean, 20/25). All nine eyes had recurrence of the membranes after treatment terminated and required a maintenance regimen of corticosteroid eyedrops. CONCLUSION: The pigmented cellular membranes observed on these silicone lenses were visually significant to each patient. The membranes resolved and visual acuity improved with topical corticosteroid treatment alone but recurred in all patients on cessation of treatment. C1 WILFORD HALL USAF MED CTR,SAN ANTONIO,TX 78236. DAVID GRANT MED CTR,FAIRFIELD,CA. NR 13 TC 15 Z9 17 U1 0 U2 0 PU OPHTHALMIC PUBL CO PI CHICAGO PA 77 WEST WACKER DR, STE 660, CHICAGO, IL 60601 SN 0002-9394 J9 AM J OPHTHALMOL JI Am. J. Ophthalmol. PD OCT PY 1995 VL 120 IS 4 BP 462 EP 470 PG 9 WC Ophthalmology SC Ophthalmology GA RY822 UT WOS:A1995RY82200006 PM 7573304 ER PT J AU FINDLAY, GP AF FINDLAY, GP TI SAFETY NOT SPEED SO ANAESTHESIA LA English DT Letter RP FINDLAY, GP (reprint author), USAF,HOSP WROUGHTON,PRINCESS ALEXANDRAS ROYAL,SWINDON SN4 0QJ,WILTS,ENGLAND. NR 1 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0003-2409 J9 ANAESTHESIA JI Anaesthesia PD OCT PY 1995 VL 50 IS 10 BP 918 EP 918 DI 10.1111/j.1365-2044.1995.tb05880.x PG 1 WC Anesthesiology SC Anesthesiology GA TB702 UT WOS:A1995TB70200033 PM 7485900 ER PT J AU HENDRIX, CW PETTY, BG WOODS, A KUWAHARA, SK WITTER, FR SOO, W GRIFFIN, DE LIETMAN, PS AF HENDRIX, CW PETTY, BG WOODS, A KUWAHARA, SK WITTER, FR SOO, W GRIFFIN, DE LIETMAN, PS TI MODULATION OF ALPHA-INTERFERONS ANTIVIRAL AND CLINICAL EFFECTS BY ASPIRIN, ACETAMINOPHEN, AND PREDNISONE IN HEALTHY-VOLUNTEERS SO ANTIVIRAL RESEARCH LA English DT Article DE ALPHA-INTERFERON; ACETAMINOPHEN; ASPIRIN; PREDNISONE; 2',5'-OLIGOADENYLATE SYNTHETASE; VESICULAR STOMATITIS VIRUS; DRUG INTERACTION ID RECOMBINANT HUMAN INTERFERON; CHRONIC HEPATITIS-C; CONTROLLED TRIAL; 2',5'-OLIGOADENYLATE SYNTHETASE; INDOLEAMINE 2,3-DIOXYGENASE; CONDYLOMATA ACUMINATA; HUMAN-FIBROBLASTS; INHIBITION; CELLS; ALFA AB The magnitude and duration of the antiviral and clinical effect of alpha-interferon was measured In health) volunteers: A single 3 million unit intramuscular dose of interferon was given either alone (controls) or after 72 h of concomitant medications. These medications included either aspirin (650 mg every 4 h), acetaminophen (650 mg every 4 h), or prednisone (40 mg per day). Peripheral blood mononuclear cells were assayed for resistance to vesicular stomatitis virus infection and induction of 2'-5'-oligoadenylate synthetase activity as evidence of interferon's antiviral effect. Co-administration of acetaminophen increased both antiviral parameters by more than 70% (P < 0.05) and reduced symptoms after interferon dosing, compared to controls. Aspirin and prednisone did not demonstrate any significant differences from controls in antiviral effect. As a group, acetaminophen, aspirin, and prednisone reduced the clinical symptoms by 47% compared controls (P = 0.03) after interferon dosing, although individual drug comparisons failed to reach statistical significance. Independent of treatment group, the changes in antiviral markers after interferon dosing correlated closely with each other (r = 0.72, P < 0.001), but neither correlated with symptoms or fever (r < 0.30, P > 0.05). Acetaminophen enhances the antiviral effects of a single intramuscular dose of alpha-interferon, considering the parameters measured in these healthy volunteers. C1 JOHNS HOPKINS UNIV,SCH MED,DEPT MED,DIV CLIN PHARMACOL,BALTIMORE,MD 21205. JOHNS HOPKINS UNIV,SCH MED,DEPT OBSTET & GYNECOL,BALTIMORE,MD 21205. JOHNS HOPKINS UNIV,SCH MED,DEPT NEUROL,BALTIMORE,MD 21205. WILFORD HALL USAF MED CTR,DEPT INFECT DIS,SAN ANTONIO,TX 78236. HOFFMAN LAROCHE CLIN RES,DEPT VIROL,NUTLEY,NJ. RI Hendrix, Craig/G-4182-2014 OI Hendrix, Craig/0000-0002-5696-8665 NR 33 TC 3 Z9 3 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0166-3542 J9 ANTIVIR RES JI Antiviral Res. PD OCT PY 1995 VL 28 IS 2 BP 121 EP 131 DI 10.1016/0166-3542(95)00043-L PG 11 WC Pharmacology & Pharmacy; Virology SC Pharmacology & Pharmacy; Virology GA TB328 UT WOS:A1995TB32800003 PM 8585766 ER PT J AU MCGOVERN, TW WILLIAMS, W FITZPATRICK, JE CETRON, MS HEPBURN, BC GENTRY, RH AF MCGOVERN, TW WILLIAMS, W FITZPATRICK, JE CETRON, MS HEPBURN, BC GENTRY, RH TI CUTANEOUS MANIFESTATIONS OF AFRICAN TRYPANOSOMIASIS SO ARCHIVES OF DERMATOLOGY LA English DT Article AB Background: Dermatologists may evaluate patients with African trypanosomiasis. The currently available dermatologic literature does not review the cutaneous manifestations of African trypanosomiasis. Observation: We describe an American man who acquired African trypanosomiasis while hunting in Tanzania, and we review and classify the cutaneous findings of this disease. This article reports the results of the first biopsy of a trypanid and depicts trypanosomes on the first touch preparation done from a trypanid biopsy specimen. Rare color photographs of trypanids are shown. Conclusions: Recognition of the unique cutaneous manifestations of African trypanosomiasis may allow dermatologists to make a rapid diagnosis that is essential for timely treatment and survival. Classifying the disease with primary chancriform, secondary hemolymphatic, and tertiary central nervous system stages should improve the understanding of the complex natural history of African trypanosomiasis. C1 FITZSIMONS ARMY MED CTR,INFECT DIS SERV,AURORA,CO 80045. NATL CTR INFECT DIS,DIV PARASIT DIS,ATLANTA,GA. USAF ACAD,DEPT FAMILY PRACTICE,COLORADO SPRINGS,CO. RP MCGOVERN, TW (reprint author), FITZSIMONS ARMY MED CTR,DERMATOL SERV,AURORA,CO 80045, USA. NR 20 TC 13 Z9 13 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0003-987X J9 ARCH DERMATOL JI Arch. Dermatol. PD OCT PY 1995 VL 131 IS 10 BP 1178 EP 1182 DI 10.1001/archderm.131.10.1178 PG 5 WC Dermatology SC Dermatology GA RZ277 UT WOS:A1995RZ27700014 PM 7574836 ER PT J AU WIEGMAN, JF BURTON, RR FORSTER, EM AF WIEGMAN, JF BURTON, RR FORSTER, EM TI THE ROLE OF ANAEROBIC POWER IN HUMAN TOLERANCE TO SIMULATED AERIAL COMBAT MANEUVERS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID EXERCISE; TESTS AB The relationships of anaerobic power, blood lactate levels, and selected anthropometric measurements to +Gz tolerance were examined in 10 adult males. Upper and lower body anaerobic indices were determined by Wingate anaerobic tests (WT). Acceleration tolerance was measured as duration time for a simulated aerial combat maneuver (SACM) centrifuge profile with alternating 4.5 and 7 +Gz 15-s plateaus until exhaustion. Group mean (+/-SD) for SACM duration was 250 +/- 97 s. Peak blood lactate concentration was 4.9 + 1.5 mmol/L and overall rating of perceived exertion was 7.4 +/- 2.1 using the Borg Category-Ratio Scale. Group mean for WT lower body 30-s mean power (MP, index of anaerobic performance) was 620 +/- 128 W; peak power (PP, highest 5-s power output) was 851 +/- 169 W. Upper body MP and PP were 380 +/- 68 W and 497 +/- 81 W, respectively. SACM duration time was positively correlated (p < 0.05) with lower body MP and PP, upper body PP, various body circumferences, weight, fat-free body weight, and height; but did not correlate with WT power outputs relative to body weight, or with other SACM variables. Results suggest that anaerobic power is an important physiologic component in SACM tolerance. C1 USAF,ARMSTRONG LAB,CREW SYST DIRECTORATE,DIV CREW TECHNOL,BROOKS AFB,TX. KRUG LIFE SCI,SAN ANTONIO,TX. NR 25 TC 7 Z9 7 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD OCT PY 1995 VL 66 IS 10 BP 938 EP 942 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RX866 UT WOS:A1995RX86600003 PM 8526829 ER PT J AU KING, RE FLYNN, CF AF KING, RE FLYNN, CF TI DEFINING AND MEASURING THE RIGHT STUFF - NEUROPSYCHIATRICALLY ENHANCED FLIGHT SCREENING (N-EFS) SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB Background: United States Air Force (USAF) commanders wish to make better pilot-selection and cockpit assignment decisions. Also, some pilots will sustain head injuries that will affect their flying careers. The complex and unforgiving nature of aviation demands a conservative approach to occupational return after neurological insult. Therefore, a neuropsychological assessment is required to return to flying. The lack of pre-injury neuropsychological data, however, hinders accurate assessment of post-injury functioning. Hypotheses: a) Psychological data may improve the pilot selection and assignment processes as military resources dwindle; and b) baseline intellectual/cognitive data may support the scientific basis of aeromedical decision-making. Methods: Neuropsychiatrically Enhanced Flight Screening (N-EFS) attempts to validate the Multidimensional Aptitude Battery (MAB), CogScreen, Revised NEO-PI (NEO-PI-R), and Personal Characteristics Inventory (PCI) for pilot selection and cockpit assignment. N-EFS also measures baseline intelligence (using the MAB) and cognitive functioning (using the CogScreen) for comparison purposes if a future medical flying waiver is needed after neurological insult. These assessments will compare the aviator's post-injury functioning to a personal intellectual functioning baseline captured at entry into aviation training. Results: N-EFS students are scoring from below average to very superior in intellectual assessment. Very preliminary personality testing results suggest few significant differences between male and female student pilots, with high extraversion being the most striking personality characteristic. Discussion: The wide range of intellectual functioning in pilot candidates argues for baseline data collection to improve future aeromedical decisions. C1 AFMC,ARMSTRONG LAB,BROOKS AFB,TX. NR 26 TC 24 Z9 25 U1 0 U2 2 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD OCT PY 1995 VL 66 IS 10 BP 951 EP 956 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RX866 UT WOS:A1995RX86600005 PM 8526831 ER PT J AU JAUCHEM, JR FREI, MR AF JAUCHEM, JR FREI, MR TI HIGH-PEAK-POWER MICROWAVE PULSES - EFFECTS ON HEART-RATE AND BLOOD-PRESSURE IN UNANESTHETIZED RATS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID RADIOFREQUENCY RADIATION; IRRADIATION AB Introduction: Exposure sources capable of generating high-peak-power microwave pulses, with relatively short pulse widths, have recently been developed. Studies of the effect of these sources on the cardiovascular systems of animals have not been reported previously. Methods: We exposed 14 unanesthetized male Sprague-Dawley rats to 10 high-peak-power microwave pulses generated by a transformer-energized megawatt pulsed output (TEMPO) microwave source, at frequencies ranging from 1.2-1.8 GHz. Peak power densities were as high as 51.6 kW/cm(2). At 14 d prior to irradiation, the animals were implanted with chronic aortic cannulae. With appropriate shielding of the transducer, blood pressure recordings were obtained during microwave pulsing. Results:ln a preliminary series of exposures at 1.7-1.8 GHz (peak power density 3.3-6.5 kW/cm(2)), an immediate but transient increase in mean arterial blood pressure (significant) and decrease in heart rate (non-significant) were observed. A loud noise was associated with each pulse produced by the TEMPO; this factor was subsequently attenuated. In a second series of exposures at 1.2-1.4 GHz (peak power density 14.6-51.6 kW/cm(2)), there were no significant changes in mean arterial blood pressure or heart rate during microwave exposure. Conclusions: The earlier significant increase in blood pressure that occurred during microwave exposure appeared to be related to the sharp noise produced by the TEMPO source. After appropriate sound attenuation, there were no significant effects of exposure to the microwave pulses. C1 USAF,ARMSTRONG LAB,OCCUPAT & ENVIRONM HLTH DIRECTORATE,DIV RADIOFREQUENCY RADIAT,BROOKS AFB,TX. TRINITY UNIV,DEPT BIOL,SAN ANTONIO,TX 78212. NR 30 TC 10 Z9 13 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD OCT PY 1995 VL 66 IS 10 BP 992 EP 997 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RX866 UT WOS:A1995RX86600011 PM 8526837 ER PT J AU KEEFER, KM JOHNSON, R AF KEEFER, KM JOHNSON, R TI SPONTANEOUS RESOLUTION OF RETAINED RENAL CALCULI IN USAF AVIATORS SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article ID SPONTANEOUS DISAPPEARANCE; STAGHORN CALCULUS; STONE AB USAF aviators may be granted medical waivers for continued flying duties when diagnosed as having retained renal calculi in parenchymal locations or in portions of the collecting system from which spontaneous passage is unlikely. The USAF Aircrew Medical Waiver File was reviewed in order to determine the proportion of USAF aviators with waivers for retained renal calculi whose calculi subsequently resolved. Of the 60 currently active aviators granted waivers between January 1976 and December 1990, 7 have had their retained calculi resolve following surgical intervention, and 13 (21.7%), 95% Cl [11.2%, 32.1%], had ''spontaneous'' resolution of their retained calculi. Using the Armstrong Laboratory's Aeromedical Consultation Service clinical database, it was possible to determine how the diagnoses of retained stones were established and/or disestablished in 15 of the 60 aviators. Theories on stone formation and resolution, tools employed in diagnosis, and implications of these study findings on flight duties are discussed. C1 USAF,SCH AEROSP MED,BROOKS AFB,TX 78235. NR 12 TC 2 Z9 3 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD OCT PY 1995 VL 66 IS 10 BP 1001 EP 1004 PG 4 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RX866 UT WOS:A1995RX86600013 PM 8526823 ER PT J AU RUDGE, FW AF RUDGE, FW TI A REVIEW OF ARTICLES PUBLISHED IN AVIATION-SPACE-AND-ENVIRONMENTAL-MEDICINE, 1975-94 SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Note AB Aviation, Space, and Environmental Medicine, the official journal of the Aerospace Medical Association, is dedicated to serving and supporting all who work to solve the problems of living and working in hazardous environments on, above, and beneath the earth and sea. This study examines and analyzes the characteristics of authors and their articles published in Aviation, Space, and Environmental Medicine over a 20-y period, from 1975-94. There were 3562 articles meeting inclusion criteria published during this period. Articles were analyzed for article length, number of authors per article, country and institution of origin, main topic, and educational preparation of authors. The majority of articles originated in the United States (68%), followed by England (7%), Canada (5%), France (3%), Israel (2%), and Russia/USSR (2%). The number of different countries contributing articles increased from 26 countries in the first 5 yr to 35 countries in the last 5 yr. The content has remained relatively uniform, with the most frequent topics being aviation medicine, aerospace physiology, environmental medicine, and space medicine. The most infrequent topics were health promotion and wellness; occupational health, and aerospace nursing. Over 85% of articles in which the educational status of authors was known were written by authors with a doctorate degree. Most primary authors possessed a doctor of medicine (38%) degree, doctor of philosophy (37%) degree, or both (5%). This analysis can provide insight into the history and future of aerospace and environmental medicine and physiology, since the contents of the Journal clearly reflect the interests of individuals working in these fields. RP RUDGE, FW (reprint author), USAF,SCH AEROSP MED,DEPT AEROSP MED,2513 KENNEDY CIRCLE,BROOKS AFB,TX 78235, USA. NR 4 TC 2 Z9 2 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD OCT PY 1995 VL 66 IS 10 BP 1005 EP 1009 PG 5 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA RX866 UT WOS:A1995RX86600014 PM 8526824 ER PT J AU WENIG, BM VINH, TN SMIRNIOTOPOULOS, JG FOWLER, GB HOUSTON, GD HEFFNER, DK AF WENIG, BM VINH, TN SMIRNIOTOPOULOS, JG FOWLER, GB HOUSTON, GD HEFFNER, DK TI AGGRESSIVE PSAMMOMATOID OSSIFYING FIBROMAS OF THE SINONASAL REGION - A CLINICOPATHOLOGICAL STUDY OF A DISTINCT GROUP OF FIBROOSSEOUS LESIONS SO CANCER LA English DT Article DE FIBROOSSEOUS LESIONS; OSSIFYING FIBROMA; AGGRESSIVE; SINONASAL TRACT; ORBIT; PSAMMOMATOID ID PARANASAL SINUSES; OSTEOBLASTOMA; TUMORS; ORBIT AB Background. Psammomatoid ossifying fibromas represent a unique subset of fibro-osseous lesions of the sinonasal tract. They have distinctive histomorphologic features and a tendency toward locally aggressive behavior, including invasion and destruction of adjacent anatomic structures. Methods. Seven cases of psammomatoid ossifying fibromas of the sinonasal tract were identified in the files of the Otolaryngic Tumor Registry at the Armed Forces Institute of Pathology, Medical records, including the clinical history, location of the lesions, radiographs, treatment, and follow-up were reviewed in each case. Follow-up information was available in all of the cases. Results. Four of the patients were male and three were female. The patients' ages ranged from 5 to 54 years (median age, 33 years). Symptoms included facial swelling, nasal obstruction, pain, sinusitis, headache, and proptosis. Radiographic studies confirmed the presence of an osseous and/or soft tissue mass varying in appearance from well demarcated without invasion or erosion to invasive with bone erosion and intracranial extension. Sites of involvement included the nasal cavity and all paranasal sinuses, particularly the ethmoid and maxillary sinuses, Often, more than one sinus was involved and extension of disease included involvement of the orbit, nasopharynx, palate, and anterior cranial fossa. The histologic appearance was characterized by the presence of small mineralized (psammomatoid) bodies admired with a cellular stroma with a variable amount of myxomatous material and scattered giant cells. Confusion with other osseous and soft tissue tumors may occur resulting in too limited or too aggressive management. En bloc surgical excision is the treatment of choice and may prove curative. Aggressive behavior with recurrence(s) or invasion into adjacent structures occurred. At the time of this writing, the patients are alive over follow-up periods ranging from 6 months to 7 years. Conclusions. Gnathic and midfacial fibro-osseous proliferations are a diverse group of lesions. A subset of these fibro-osseous lesions with predilection for the sinonasal tract were identified. These lesions are characterized by their distinctive histology, including psammomatoid ossicles and their locally aggressive growth. Complete surgical removal is the treatment of choice. C1 ARMED FORCES INST PATHOL,DEPT ORTHOPED PATHOL,WASHINGTON,DC 20306. ARMED FORCES INST PATHOL,DEPT RADIOL PATHOL,WASHINGTON,DC 20306. DEPT ORAL PATHOL,KEESLER AFB,MS. WILFORD HALL USAF MED CTR,DEPT ORAL PATHOL,SAN ANTONIO,TX 78236. RP WENIG, BM (reprint author), ARMED FORCES INST PATHOL,DEPT OTOLARYNG & ENDOCRINE PATHOL,BLDG 54,ROOM 2025,WASHINGTON,DC 20306, USA. RI Smirniotopoulos, James/D-3726-2011 NR 34 TC 57 Z9 58 U1 0 U2 3 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0008-543X J9 CANCER JI Cancer PD OCT 1 PY 1995 VL 76 IS 7 BP 1155 EP 1165 DI 10.1002/1097-0142(19951001)76:7<1155::AID-CNCR2820760710>3.0.CO;2-P PG 11 WC Oncology SC Oncology GA RV692 UT WOS:A1995RV69200009 PM 8630892 ER PT J AU BROWN, TM SKOP, BP AF BROWN, TM SKOP, BP TI PSEUDO-PHEOCHROMOCYTOMA AND THE SEROTONIN SYNDROME SO CLINICAL ENDOCRINOLOGY LA English DT Letter ID PSEUDOPHAEOCHROMOCYTOMA RP BROWN, TM (reprint author), WILFORD HALL USAF MED CTR,DEPT PSYCHIAT,LACKLAND AFB,TX 78236, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0300-0664 J9 CLIN ENDOCRINOL JI Clin. Endocrinol. PD OCT PY 1995 VL 43 IS 4 BP 513 EP 513 PG 1 WC Endocrinology & Metabolism SC Endocrinology & Metabolism GA RZ090 UT WOS:A1995RZ09000020 PM 7586630 ER EF