FN Thomson Reuters Web of Science™ VR 1.0 PT S AU BRUSTON, P MUMMA, MJ AF BRUSTON, P MUMMA, MJ BE Foing, BH TI SOLAR-SYSTEM EXPLORATION FROM THE MOON - SYNOPTIC AND COMPARATIVE-STUDY OF BODIES IN OUR PLANETARY SYSTEM SO ASTRONOMY AND SPACE SCIENCE FROM THE MOON SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium E4 of the COSPAR 29th Plenary Meeting on Astronomy and Space Science from the Moon CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COSPAR, INT ACAD ASTRON, INT ASTRON UNION, CTR NATL ETUDES SPATIALES, EUROPEAN SPACE AGCY, NASA ID JOVIAN GLOBAL OSCILLATIONS; COMET AUSTIN 1989C1; TENTATIVE IDENTIFICATION; H-3+ EMISSIONS; HALLEYS-COMET; LEVY 1990C; JUPITER; ULTRAVIOLET; FORMALDEHYDE; VARIABILITY AB An observational approach to Planetary Sciences and exploration from Earth applies to a quite limited number of targets, but most of these are spatially complex and exhibit variability and evolution on a number of temporal scales which lie within the scope of possible observations. Advancing our understanding of the underlying physics requires the study of interactions between the various elements of such systems, and also requires study of the comparative response of both a given object to various conditions and of comparable objects to similar conditions. These studies are best conducted in ''campaigns'', i.e. comprehensive programmes combining simultaneous coherent observations of every interacting piece of the puzzle. The requirements include both imaging and spectroscopy over a wide spectral range, from UV to IR. While temporal simultaneity of operation in various modes is a key feature, these observations are also conducted over extended periods of time. The moon is a prime site offering long unbroken observation times and high positional stability, observations at small angular separation from the sun, comparative studies of planet Earth, and valuable technical advantages. A lunar observatory should become a central piece of any coherent set of planetary missions, supplying in-situ explorations with the synoptic and comparative data necessary for proper advance planning, correlative observations during the active exploratory phase, and follow-up studies of the target body or of related objects. C1 UNIV PARIS 11,INST ASTROPHYS SPATIALE,CNRS,PARIS,FRANCE. NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. RP BRUSTON, P (reprint author), UNIV PARIS 12,EPCOS,LPCE,CNRS,URA 1404,AVE GEN GAULLE,F-94010 CRETEIL,FRANCE. RI mumma, michael/I-2764-2013 NR 48 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042483-X J9 ADV SPACE RES PY 1994 VL 14 IS 6 BP 143 EP 158 DI 10.1016/0273-1177(94)90021-3 PG 16 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA12C UT WOS:A1994BA12C00020 ER PT S AU GREEN, JL FUNG, SF AF GREEN, JL FUNG, SF BE Foing, BH TI RADIO SOUNDING OF THE MAGNETOSPHERE FROM A LUNAR-BASED VLF ARRAY SO ASTRONOMY AND SPACE SCIENCE FROM THE MOON SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium E4 of the COSPAR 29th Plenary Meeting on Astronomy and Space Science from the Moon CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COSPAR, INT ACAD ASTRON, INT ASTRON UNION, CTR NATL ETUDES SPATIALES, EUROPEAN SPACE AGCY, NASA AB Using a lunar-based active radio transmitter and receiver system operating in the ''free space'' wave modes, we can obtain much information on the structures and dynamics of remote magnetospheric plasma regions in a way similar to ionosondes. Powerful, narrow-band electromagnetic pulses can be transmitted over a wide frequency range (from 10 kHz to 1 MHz). The signals would be refracted and reflected off magnetospheric structures such as the plasmapause, plasmasheet, magnetopause, and the high and low latitude boundary layers. With a series of long dipole antennas, ranging in size from 400 m to 20 lan with an output voltage ranging from 6 kV to less than 0.2 kV, a target plasma region at up to 100 R(E) can be explored. We illustrate this remote sensing technique by using the plasmasphere as a remote target, and modeling the propagations of the sounder transmitted and received pulses by ray tracing calculations. C1 ST SYST CORP,LANHAM,MD 20706. RP GREEN, JL (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 630,GREENBELT,MD 20771, USA. RI Fung, Shing/F-5647-2012 NR 15 TC 3 Z9 3 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042483-X J9 ADV SPACE RES PY 1994 VL 14 IS 6 BP 217 EP 221 DI 10.1016/0273-1177(94)90031-0 PG 5 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA12C UT WOS:A1994BA12C00030 ER PT S AU STACHNIK, RV KAPLAN, MS AF STACHNIK, RV KAPLAN, MS BE Foing, BH TI NASA FUTURE-PLANS FOR LUNAR ASTRONOMY AND ASTROPHYSICS SO ASTRONOMY AND SPACE SCIENCE FROM THE MOON SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium E4 of the COSPAR 29th Plenary Meeting on Astronomy and Space Science from the Moon CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COSPAR, INT ACAD ASTRON, INT ASTRON UNION, CTR NATL ETUDES SPATIALES, EUROPEAN SPACE AGCY, NASA AB An expanding scientific interest in astronomical observations from the Moon has led the National Aeronautics and Space Administration (NASA) to develop a two-part strategy for lunar-astrophysics planning. The strategy emphasizes a systematic review process involving both the external scientific community and internal NASA engineering teams, coupled with the rigorous exclusion of projects inappropriate to lunar emplacement. Five major candidate lunar-astronomy projects are described, together with a modest derivative of one of them that could be implemented early in the establishment of a lunar base. RP STACHNIK, RV (reprint author), NASA,DIV ASTROPHYS,WASHINGTON,DC 20546, USA. NR 9 TC 0 Z9 0 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042483-X J9 ADV SPACE RES PY 1994 VL 14 IS 6 BP 245 EP 251 DI 10.1016/0273-1177(94)90034-5 PG 7 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA12C UT WOS:A1994BA12C00033 ER PT S AU ASH, RL WU, D OUTLAW, RA AF ASH, RL WU, D OUTLAW, RA BE Foing, BH TI A STUDY OF GLOW-DISCHARGE AND PERMEATION TECHNIQUES FOR EXTRATERRESTRIAL OXYGEN BENEFICIATION SO ASTRONOMY AND SPACE SCIENCE FROM THE MOON SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium E4 of the COSPAR 29th Plenary Meeting on Astronomy and Space Science from the Moon CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COSPAR, INT ACAD ASTRON, INT ASTRON UNION, CTR NATL ETUDES SPATIALES, EUROPEAN SPACE AGCY, NASA ID ADSORPTION; TRANSPORT; AG AB Extraction of oxygen from Martian atmosphere and compression of lunar oxygen can utilize stabilized zirconia electrochemical pumps. Silver membranes can be used as electrodes to increase oxygen yield at relatively low temperatures. This study has investigated oxygen permeation through Ag 0.05Zr membranes with glow-discharge assisted dissociation. Data show that the overall process is controlled by bulk diffusion but the slow dissociative adsorption onto the surface limited the overall transport substantially. With glow-discharge assisted dissociation, an order of magnitude increase in oxygen throughput can be produced at relatively low temperatures (450-550 degrees C). C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. RP ASH, RL (reprint author), OLD DOMINION UNIV,DEPT MECH ENGN & MECH,NORFOLK,VA 23529, USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042483-X J9 ADV SPACE RES PY 1994 VL 14 IS 6 BP 259 EP 263 DI 10.1016/0273-1177(94)90036-1 PG 5 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA12C UT WOS:A1994BA12C00035 ER PT J AU LIESKE, JH AF LIESKE, JH TI ON THE CONVERSION OF ORBITAL ELEMENTS FROM 19500 TO J-2000 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE ASTROMETRY; EPHEMERIDES; REFERENCE SYSTEMS; PLANETS AND SATELLITES, GENERAL; MINOR PLANETS; METHODS, MISCELLANEOUS ID IAU 1976 SYSTEM; ASTRONOMICAL CONSTANTS; B1950.0; J2000.0; TRANSFORMATION; POSITIONS; MATRIX; PLACES; STARS AB Formulas are developed for the transformation of ecliptical orbital elements from B 1950 to J 2000. The results are compared with those recommended by IAU Commission 20. Some drawbacks to the Commission 20 formulation are pointed out and we develop procedures which are consistent with standard precessional formulations. RP LIESKE, JH (reprint author), JET PROP LAB, MS 301-150, 4800 OAK GROVE DR, PASADENA, CA 91109 USA. NR 14 TC 2 Z9 2 U1 1 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JAN PY 1994 VL 281 IS 1 BP 281 EP 285 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MN992 UT WOS:A1994MN99200042 ER PT J AU LITTLEMARENIN, IR SAHAI, R WANNIER, PG BENSON, PJ GAYLARD, M OMONT, A AF LITTLEMARENIN, IR SAHAI, R WANNIER, PG BENSON, PJ GAYLARD, M OMONT, A TI A SEARCH FOR SIO, OH, CO AND HCN RADIO-EMISSION FROM SILICATE-CARBON STARS SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE STARS, CARBON STARS; STARS, CIRCUMSTELLER MATTER; STARS, AGB, POST-AGB; STARS; ABUNDANCES; RADIO LINES, STARS ID RICH CIRCUMSTELLAR ENVELOPES; WATER MASER EMISSION; GIANT BRANCH STARS; C-13 J-STARS; EVOLVED STARS; DUST SHELLS; RED GIANTS; SOLAR NEIGHBORHOOD; PLANETARY-NEBULAE; BEARING MOLECULES AB We report upper limits for radio emission of SiO at 86 and 43 GHz, of OH at 1612 and 1665/1667 MHz, of CO at 115 GHz and HCN at 88.6 GHz in the silicate-carbon stars. These upper limits of SiO imply that oxygen-rich material has not been detected within 2R(star) of a central star even though the detected emission from silicate dust glains, H2O and OH maser establishes the presence of oxygen-rich material from about tens to thousands of AU of a central star. The upper limit of the SiO abundance is consistent with that found in oxygen-rich envelopes. Upper limits of the mass loss rate (based on the CO data) are estimated to be between 10(-6) to 10(-7) M(.) yr(-1) assuming a distance of 1.5 kpc for these stars. The absence of HCN microwave emission implies that no carbon-rich material can be detected at large distances (thousands of AU) from a central star. The lack of detections of SiO, CO and HCN emission is most likely due to the large distances of these stars. A number of C stars were detected in CO and HCN, but only the M supergiant VX Sgr was detected in CO. C1 CALTECH, JET PROP LAB, PASADENA, CA 91109 USA. WELLESLEY COLL, WHITIN OBSERV, WELLESLEY, MA 02181 USA. HARTEBEESTHOEK RADIO ASTRON OBSERV, KRUGERSDORP 1740, SOUTH AFRICA. OBSERV GRENOBLE, ASTROPHYS GRP, F-38041 GRENOBLE, FRANCE. RP LITTLEMARENIN, IR (reprint author), UNIV COLORADO, CTR ASTROPHYS & SPACE ASTRON, BOULDER, CO 80309 USA. NR 64 TC 15 Z9 15 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JAN PY 1994 VL 281 IS 2 BP 451 EP 459 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR312 UT WOS:A1994MR31200020 ER PT J AU NORTH, P BERTHET, S LANZ, T AF NORTH, P BERTHET, S LANZ, T TI THE NATURE OF THE F-STR LAMBDA-4077 STARS .3. SPECTROSCOPY OF THE BARIUM DWARFS AND OTHER CP STARS SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE STARS, CLASSIFICATION, ABUNDANCES, CHEMICALLY PECULIAR, EVOLUTION OF, CLOSE BINARIES; NUCLEOSYNTHESIS ID OBJECTIVE-PRISM DISCOVERIES; SUBGIANT CH-STARS; MAIN-SEQUENCE; ABUNDANCE ANOMALIES; MODEL ATMOSPHERES; NORTHERN SKY; GIANT STARS; A-STAR; B-STAR; PHOTOMETRY AB The abundances of C, O, Al, Ca, iron-peak and s-process elements have been derived from high-resolution spectra for a sample of stars classified as F str lambda4077 by Bidelman. Among the 20 stars mentioned by Bidelman, we have discovered 8 barium dwarfs (or CH subgiants, according to Bond's terminology), while a 9th star, HD 182274, was already known as a CH subgiant. In addition, we have analyzed three barium stars taken from the list of Lu et al. (1983) which are probably dwarfs rather than giants, and three CH subgiants. The other 11F str lambda4077 stars resemble either the delta Delphini stars, since their iron abundance is enhanced while Ca is normal, or are probably spectrum composites. A few Am, Ap, lambda Bootis and normal stars have been analyzed for comparison. In particular, we have included three lambda Boo candidates, selected from their photometric properties, and their iron deficiency is confirmed. The spectroscopic, photometric and statistical evidences concerning the Ba dwarfs, support the idea that these stars may be the main sequence counterparts, and possibly the progenitors of the Ba giants. The C/0 ratio varies in these stars from normal values to a maximum of 1.5, but mostly within 0.6 and 1.2. Some of these objects may therefore be considered, in this sense, as carbon stars. On the other hand, the abundances of carbon and s-process elements relative to iron are inversely correlated with metallicity, and may even exceed significantly those of typical, solar-metallicity carbon stars. Metal-deficient C stars must therefore have [C/Fe]greater than or similar to 1 and and [s/Fe]greater than or similar to 1.5 as soon as [Fe/H]greater than or similar to 1. The neutron exposure is shown to increase when the metallicity decreases, which is compatible with the C-13(alpha, n)O-16 neutron source, but not with the Ne-22(alpha, n)Mg-25 one. The evolutionary state (within the main sequence) of the Ba dwarfs, is rediscussed in relation with their photometric and spectroscopic surface gravity, but it remains unclear. C1 NASA, GODDARD SPACE FLIGHT CTR, ASTRON & SOLAR PHYS LAB, GREENBELT, MD 20771 USA. RP NORTH, P (reprint author), UNIV LAUSANNE, INST ASTRON, CH-1290 CHAVANNES DES BOIS, SWITZERLAND. NR 78 TC 58 Z9 58 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD JAN PY 1994 VL 281 IS 3 BP 775 EP 796 PG 22 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MT446 UT WOS:A1994MT44600020 ER PT J AU MOORE, MH HUDSON, RL AF MOORE, MH HUDSON, RL TI FAR-INFRARED SPECTRA OF COSMIC-TYPE PURE AND MIXED ICES SO ASTRONOMY & ASTROPHYSICS SUPPLEMENT SERIES LA English DT Article DE INFRARED, INTERSTELLAR, LINES; INTERSTELLAR MEDIUM, CLOUDS; MOLECULAR DATA; DUST ID WATER ICE; IRAS 09371+1212; CARBON-DIOXIDE; RAMAN SPECTRA; ABSORPTION; METHANOL; NH3; BANDS; STARS AB We have measured the far-infrared spectra of pure H2O, CH3OH, NH3, CO2, H2CO, CH4, and CO ices and H2O-dominated binary mixtures of CH3OH, NH3, CO2, H2CO, CH4, and CO from 500 cm(-1) (20 mu m) to 100 cm(-1) (100 mu m) at low temperatures. We also examined spectra of several more complex ices. These results to 100 cm represent a consistent set of data on astrophysically relevant molecules and mixtures over a wide range of temperatures. This set provides information in a spectral region that will be increasingly accessible with the advent of future orbiting observatories. Spectra of both the amorphous and crystalline phases of each of the pure molecular ices are unique. Spectra of icy mixtures, however, are in general dominated by H2O ice features over the entire range of temperatures studied. One exception to this is the H2O + CH3OH ice which evolves from an amorphous deposit to form a multi-line crystalline-like spectrum we have identified with the recently reported CH3OH clathrate hydrate. Implications of these results on the identification of extraterrestrial ices based on observations in the far-infrared are included. C1 ECKERD COLL,DEPT CHEM,ST PETERSBURG,FL 33733. RP MOORE, MH (reprint author), NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,ASTROCHEM BRANCH,CODE 691,GREENBELT,MD 20771, USA. RI Hudson, Reggie/E-2335-2012 NR 43 TC 35 Z9 35 U1 1 U2 6 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 0365-0138 J9 ASTRON ASTROPHYS SUP JI Astron. Astrophys. Suppl. Ser. PD JAN PY 1994 VL 103 IS 1 BP 45 EP 56 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR622 UT WOS:A1994MR62200005 ER PT S AU WEIR, N DJORGOVSKI, S FAYYAD, U SMITH, JD RODEN, J AF WEIR, N DJORGOVSKI, S FAYYAD, U SMITH, JD RODEN, J BE MacGillivray, HT Thomson, EB Lasker, BM Reid, IN Malin, DF West, RM Lorenz, H TI CATALOGING THE NORTHERN SKY USING A NEW-GENERATION OF SOFTWARE TECHNOLOGY SO ASTRONOMY FROM WIDE-FIELD IMAGING SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 161st Symposium of the International-Astronomical-Union: Astronomy from Wide-Field Imaging CY AUG 23-27, 1993 CL POTSDAM, GERMANY SP INT ASTRON UNION ID EVOLUTION AB We have developed a system, called SKICAT, for producing, managing and analyzing catalogs from the digitized POSS-II survey. The system classifies and matches catalogs from multiple, overlapping plate scans as well as CCD calibration sequences; and it can be used for the scientific analysis of the resulting catalogs. It incorporates a number of novel machine-learning and AI tools, including the star/galaxy classification using decision tree algorithms. This results: in star/galaxy separation accurate to 90% or better down to B-J similar to 21(m), i.e. similar to 1(m) above the plate limit. The final catalog is expected to contain at least 5 x 10(7) galaxies and > 2 x 10(9) stars. We present preliminary results on galaxy counts from a test region near the NGP. We find a mild excess over the no-evolution models, smaller than previously found by the APM group. A search for z > 4 quasars and the two-point correlation analysis of this data set are in progress. C1 CALTECH,JET PROP LAB,PASADENA,CA 91125. RP WEIR, N (reprint author), CALTECH,PALOMAR OBSERV,MS 105-24,PASADENA,CA 91125, USA. NR 17 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-2878-7 J9 IAU SYMP PY 1994 IS 161 BP 205 EP 212 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB16E UT WOS:A1994BB16E00043 ER PT S AU RAKOS, K SCHOMBERT, J MAINDL, T UNGER, N OBITSCH, P AF RAKOS, K SCHOMBERT, J MAINDL, T UNGER, N OBITSCH, P BE MacGillivray, HT Thomson, EB Lasker, BM Reid, IN Malin, DF West, RM Lorenz, H TI THE EVOLUTION OF GALAXIES IN THE LAST 10 GYR SO ASTRONOMY FROM WIDE-FIELD IMAGING SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 161st Symposium of the International-Astronomical-Union: Astronomy from Wide-Field Imaging CY AUG 23-27, 1993 CL POTSDAM, GERMANY SP INT ASTRON UNION ID SPECTROPHOTOMETRY C1 CALTECH,CTR INFRARED PROC & ANAL,JET PROP LAB,PASADENA,CA 91125. RP RAKOS, K (reprint author), UNIV VIENNA,INST ASTRON,TURKENSCHANZSTR 17,A-1180 VIENNA,AUSTRIA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-2878-7 J9 IAU SYMP PY 1994 IS 161 BP 649 EP 651 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB16E UT WOS:A1994BB16E00138 ER PT B AU RUDOLPH, AL AF RUDOLPH, AL BE Ishiguro, M Welch, WJ TI Evidence for protostellar wind cloud interactions SO ASTRONOMY WITH MILLIMETER AND SUBMILLIMETER WAVE INTERFEROMETRY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Conference on Astronomy with Millimeter and Submillimeter Wave Interferometry CY OCT 05-09, 1992 CL HAKONE, JAPAN SP IAU Commiss 40, URSI Commiss J C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-78-3 J9 ASTR SOC P PY 1994 VL 59 BP 195 EP 198 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD87Z UT WOS:A1994BD87Z00046 ER PT B AU TAMURA, M OHASHI, N MORIARTYSCHIEVEN, G HAYASHI, M HIRANO, N AF TAMURA, M OHASHI, N MORIARTYSCHIEVEN, G HAYASHI, M HIRANO, N BE Ishiguro, M Welch, WJ TI CO outflows in low-mass protostar candidates in Taurus SO ASTRONOMY WITH MILLIMETER AND SUBMILLIMETER WAVE INTERFEROMETRY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Conference on Astronomy with Millimeter and Submillimeter Wave Interferometry CY OCT 05-09, 1992 CL HAKONE, JAPAN SP IAU Commiss 40, URSI Commiss J C1 CALTECH,JET PROP LAB,PASADENA,CA 91109. 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 0-937707-78-3 J9 ASTR SOC P PY 1994 VL 59 BP 268 EP 269 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD87Z UT WOS:A1994BD87Z00074 ER PT B AU DAVIDSON, JA ROELLIG, TL PERNIC, RJ AF DAVIDSON, JA ROELLIG, TL PERNIC, RJ BE Ishiguro, M Welch, WJ TI Background-limited performance in the submillimeter SO ASTRONOMY WITH MILLIMETER AND SUBMILLIMETER WAVE INTERFEROMETRY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Conference on Astronomy with Millimeter and Submillimeter Wave Interferometry CY OCT 05-09, 1992 CL HAKONE, JAPAN SP IAU Commiss 40, URSI Commiss J C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-78-3 J9 ASTR SOC P PY 1994 VL 59 BP 382 EP 383 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD87Z UT WOS:A1994BD87Z00109 ER PT B AU DAVIDSON, JA ERICKSON, EF AF DAVIDSON, JA ERICKSON, EF BE Ishiguro, M Welch, WJ TI Sofia: Stratospheric observatory for infrared astronomy SO ASTRONOMY WITH MILLIMETER AND SUBMILLIMETER WAVE INTERFEROMETRY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Conference on Astronomy with Millimeter and Submillimeter Wave Interferometry CY OCT 05-09, 1992 CL HAKONE, JAPAN SP IAU Commiss 40, URSI Commiss J C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-78-3 J9 ASTR SOC P PY 1994 VL 59 BP 428 EP 429 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD87Z UT WOS:A1994BD87Z00117 ER PT J AU WRIGHT, EL SMOOT, GF KOGUT, A HINSHAW, G TENORIO, L LINEWEAVER, C BENNETT, CL LUBIN, PM AF WRIGHT, EL SMOOT, GF KOGUT, A HINSHAW, G TENORIO, L LINEWEAVER, C BENNETT, CL LUBIN, PM TI COMMENTS ON THE STATISTICAL-ANALYSIS OF EXCESS VARIANCE IN THE COBE DIFFERENTIAL MICROWAVE RADIOMETER MAPS SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC MICROWAVE BACKGROUND; COSMOLOGY, OBSERVATIONS AB Cosmic anisotropy produces an excess variance sigma(sky)2 in the DELTAT maps produced by the Differential Microwave Radiometer (DMR) on COBE that is over and above the instrument noise. After smoothing to an effective resolution of 10-degrees, this excess, sigma(sky)10-degrees, provides an estimate for the amplitude of the primordial density perturbation power spectrum with a cosmic uncertainty of only 12%. We employ detailed Monte Carlo techniques to express the amplitude derived from this statistic in terms of the universal rms quadrupole amplitude, [Q(RMS)2]0.5. The effects of monopole and dipole subtraction and the non-Gaussian shape of the DMR beam cause the derived [Q(RMS)2]0.5 to be 5%-10% larger than would be derived using simplified analytic approximations. We also investigate the properties of two other map statistics: the actual quadrupole and the Boughn-Cottingham statistic. Both the sigma(sky)(10-degrees) statistic and the Boughn-Cottingham statistic are consistent with the [Q(RMS)2] = 17 +/- 5 muK reported by Smoot et al. (1992) and Wright et al. (1992). C1 UNIV SPACE RES ASSOCIAT, NASA, GSFC, GREENBELT, MD 20771 USA. UCSB, DEPT PHYS, SANTA BARBARA, CA 93106 USA. UNIV CALIF BERKELEY, LBL, BERKELEY, CA 94720 USA. UNIV CALIF BERKELEY, SSL, BERKELEY, CA 94720 USA. RP WRIGHT, EL (reprint author), UNIV CALIF LOS ANGELES, DEPT ASTRON, LOS ANGELES, CA 90024 USA. RI Kogut, Alan/D-6293-2012 NR 14 TC 102 Z9 102 U1 0 U2 2 PU IOP PUBLISHING LTD PI BRISTOL PA TEMPLE CIRCUS, TEMPLE WAY, BRISTOL BS1 6BE, ENGLAND SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD JAN 1 PY 1994 VL 420 IS 1 BP 1 EP 8 DI 10.1086/173537 PN 1 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MN701 UT WOS:A1994MN70100001 ER PT J AU JAFFE, AH STEBBINS, A FRIEMAN, JA AF JAFFE, AH STEBBINS, A FRIEMAN, JA TI MINIMAL MICROWAVE ANISOTROPY FROM PERTURBATIONS INDUCED AT LATE TIMES SO ASTROPHYSICAL JOURNAL LA English DT Article DE COSMIC MICROWAVE BACKGROUND; LARGE-SCALE STRUCTURE OF UNIVERSE ID BACKGROUND-RADIATION ANISOTROPIES; LARGE-SCALE STRUCTURE; PHASE-TRANSITIONS; DARK MATTER; UNIVERSE; EVOLUTION; WALL AB Aside from primordial gravitational instability of the cosmological fluid, various mechanisms have been proposed to generate large-scale structure at relatively late times, including, e.g., '' late-time '' cosmological phase transitions. In these scenarios, it is envisioned that the universe is nearly homogeneous at the time of last scattering and that perturbations grow rapidly sometimes after the primordial plasma recombines. On this basis, it was suggested that large inhomogeneities could be generated while leaving relatively little imprint on the cosmic microwave background (MBR) anisotropy. In this paper, we calculate the minimal anisotropies possible in any ''late-time'' scenario for structure formation, given the level of inhomogeneity observed at present. Since the growth of the inhomogeneity involves time-varying gravitational fields, these scenarios inevitably generate significant MBR anisotropy via the Sachs-Wolfe effect. Moreover, we show that the large-angle MBR anisotropy produced by the rapid post-recombination growth of inhomogeneity is generally greater than that produced by the same inhomogeneity grown via gravitational instability. In ''realistic'' scenarios one can decrease the anisotropy compared to models with primordial adiabatic fluctuations, but only on very small angular scales. The value of any particular measure of the anisotropy can be made small in late-time models, but only by making the time-dependence of the gravitational field sufficiently '' pathological C1 UNIV CHICAGO,DEPT ASTRON & ASTROPHYS,CHICAGO,IL 60637. NASA,CTR FERMILAB ASTROPHYS,FERMI NATL ACCELERATOR LAB,BATAVIA,IL 60510. RI Jaffe, Andrew/D-3526-2009 NR 38 TC 14 Z9 14 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 JAN 1 PY 1994 VL 420 IS 1 BP 9 EP 25 DI 10.1086/173538 PN 1 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MN701 UT WOS:A1994MN70100002 ER PT J AU BUTNER, HM NATTA, A EVANS, NJ AF BUTNER, HM NATTA, A EVANS, NJ TI SPHERICAL DISKS - MOVING TOWARD A UNIFIED SOURCE MODEL FOR L1551 SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCRETION, ACCRETION DISKS; ISM, INDIVIDUAL (L1551 IRS 5); STARS, PRE-MAIN-SEQUENCE ID FAR-INFRARED OBSERVATIONS; YOUNG STELLAR OBJECTS; T-TAURI STARS; MOLECULAR CLOUDS; HIGH-RESOLUTION; ACCRETION; SPECTRA; IRS-5; DUST AB To predict the effects of a disk on the spectral energy distribution of a deeply embedded protostar, we construct disk models with power-law temperature distributions (T is-proportional-to r(-q)). We then use the spherically averaged disk emission as the central source for a spherical envelope, hence the term, ''spherical'' disk. We then calculate the predicted spectral energy distribution of the disk and envelope, using a spherically symmetric radiative transport code. Applying this procedure to L1551 IRS 5, we find that the predicted far-infrared flux is not very sensitive to the nature of the central source, The best source model is consistent with the far-infrared emission arising from the infalling region in an ''inside-out'' collapse model, independent of the nature of the central source. Disk models are superior to the star-only model when we try to match millimeter interferometer data. While disks with various q can reproduce the observed 2.7 mm interferometer flux, only an active disk (q = 0.5) can produce enough emission in a region small enough to match the observed 2.7 mm visibilities. However, if the disk is backwarmed by the envelope, even purely reprocessing disks can meet this constraint. All types of backwarmed disks are virtually indistinguishable in their millimeter properties. We find that all reasonable envelope models are sufficiently opaque in the mid-infrared to attenuate any disk model to a level well below the observations, unless the ratio of the mid-infrared to far-infrared dust opacities is similar to that of the dust opacities advocated by Mathis, Mezger, & Panagia (1983). C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. OSSERV ASTROFIS ARCETRI,I-50125 FLORENCE,ITALY. UNIV TEXAS,DEPT ASTRON,AUSTIN,TX 78712. OI Butner, Harold/0000-0003-4899-2064 NR 31 TC 57 Z9 57 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 JAN 1 PY 1994 VL 420 IS 1 BP 326 EP 335 DI 10.1086/173562 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MN701 UT WOS:A1994MN70100026 ER PT J AU DRAKE, SA LINSKY, JL SCHMITT, JHMM ROSSO, C AF DRAKE, SA LINSKY, JL SCHMITT, JHMM ROSSO, C TI X-RAY-EMISSION FROM CHEMICALLY PECULIAR STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE STARS, PECULIAR; X-RAYS, STARS ID RADIO-EMISSION; STELLAR WINDS; HOT STARS; CLOUD; AP AB We have searched the ROSA T All-Sky Survey (RASS) database at the positions of approximately 100 magnetic Bp-Ap stars of the helium-strong, helium-weak, silicon, and strontium-chromium subclasses. We detect X-ray sources at the positions of 10 of these stars; in four cases the X-ray emission presumably arises from an early-type companion with a radiatively driven wind, while we believe that the magnetic chemically peculiar (CP) star is the most likely X-ray source (as opposed to a binary companion) in at least three and at most five of the six remaining cases. The helium-strong stars have X-ray emission levels that are characteristic of the luminous OB stars with massive winds (log L(x)/L(bol) approximately -7), whereas the He-weak and Si stars (which generally show no evidence for significant mass loss) have log L(x)/L(bol) values that can reach as high as approximately -6. In contrast, we find no convincing evidence that the cooler SrCrEu-type CP stars are intrinsic X-ray sources. We discuss the X-ray and radio emission properties of our sample of CP stars, and argue that both types of emission may be magnetospheric in origin; however, there is clearly not a simple one-to-one correspondence between them, since many of the magnetic stars that are detected radio sources were not detected as X-ray sources in the present survey. C1 NATL INST STAND & TECHNOL,JOINT INST LAB ASTROPHYS,BOULDER,CO 80309. UNIV COLORADO,BOULDER,CO 80309. MAX PLANCK INST EXTRA TERRESTR PHYS,W-8046 GARCHING,GERMANY. RP DRAKE, SA (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS SCI ARCH RES CTR,CODE 668,GREENBELT,MD 20771, USA. NR 27 TC 38 Z9 38 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 JAN 1 PY 1994 VL 420 IS 1 BP 387 EP 391 DI 10.1086/173568 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MN701 UT WOS:A1994MN70100032 ER PT B AU BROWELL, EV AF BROWELL, EV BE Flood, WA Miller, WB TI LASER REMOTE-SENSING FROM AIRCRAFT AND SPACECRAFT SO ATMOSPHERIC PROPAGATION AND REMOTE SENSING III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Atmospheric Propagation and Remote Sensing III CY APR 05-07, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23681. 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 0-8194-1526-X J9 P SOC PHOTO-OPT INS PY 1994 VL 2222 BP 2 EP 11 DI 10.1117/12.177953 PG 10 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BA83V UT WOS:A1994BA83V00001 ER PT J AU GULTEPE, I STARR, DOC AF GULTEPE, I STARR, DOC BE Waldvogel, A TI MICROPHYSICAL AND RADIATIVE DEVELOPMENT OF A CIRRUS CLOUD DURING FIRE - IMPLICATIONS FOR DYNAMICAL EFFECTS SO ATMOSPHERIC RESEARCH, VOL 34, NOS 1-4, JUNE 20, 1994: SPECIAL ISSUE: 11TH INTERNATIONAL CONFERENCE ON CLOUDS AND PRECIPITATION, PT III LA English DT Proceedings Paper CT 11th International Conference on Clouds and Precipitation CY AUG 17-21, 1992 CL MCGILL UNIV, MONTREAL, CANADA HO MCGILL UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,CODE 913,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS PY 1994 BP 43 EP 52 PG 10 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BD08K UT WOS:A1994BD08K00003 ER PT B AU PLATNICK, S TWOMEY, S AF PLATNICK, S TWOMEY, S BE Waldvogel, A TI REMOTE SENSING THE SUSCEPTIBILITY OF CLOUD ALBEDO TO CHANGES IN DROP CONCENTRATION SO ATMOSPHERIC RESEARCH, VOL 34, NOS 1-4, JUNE 20, 1994: SPECIAL ISSUE: 11TH INTERNATIONAL CONFERENCE ON CLOUDS AND PRECIPITATION, PT III LA English DT Proceedings Paper CT 11th International Conference on Clouds and Precipitation CY AUG 17-21, 1992 CL MCGILL UNIV, MONTREAL, CANADA HO MCGILL UNIV C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RI Platnick, Steven/J-9982-2014 OI Platnick, Steven/0000-0003-3964-3567 NR 0 TC 0 Z9 0 U1 0 U2 3 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS PY 1994 BP 85 EP 98 PG 14 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BD08K UT WOS:A1994BD08K00005 ER PT J AU WINKER, DM VAUGHAN, MA AF WINKER, DM VAUGHAN, MA BE Waldvogel, A TI VERTICAL DISTRIBUTION OF CLOUDS OVER HAMPTON, VIRGINIA OBSERVED BY LIDAR UNDER THE ECLIPSE AND FIRE ETO PROGRAMS SO ATMOSPHERIC RESEARCH, VOL 34, NOS 1-4, JUNE 20, 1994: SPECIAL ISSUE: 11TH INTERNATIONAL CONFERENCE ON CLOUDS AND PRECIPITATION, PT III LA English DT Proceedings Paper CT 11th International Conference on Clouds and Precipitation CY AUG 17-21, 1992 CL MCGILL UNIV, MONTREAL, CANADA HO MCGILL UNIV C1 NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 2 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS PY 1994 BP 117 EP 133 PG 17 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BD08K UT WOS:A1994BD08K00007 ER PT J AU HAMMER, PD VALERO, FPJ SMITH, WH AF HAMMER, PD VALERO, FPJ SMITH, WH BE Waldvogel, A TI SPECTRAL IMAGING OF CLOUDS USING A DIGITAL ARRAY SCANNED INTERFEROMETER SO ATMOSPHERIC RESEARCH, VOL 34, NOS 1-4, JUNE 20, 1994: SPECIAL ISSUE: 11TH INTERNATIONAL CONFERENCE ON CLOUDS AND PRECIPITATION, PT III LA English DT Proceedings Paper CT 11th International Conference on Clouds and Precipitation CY AUG 17-21, 1992 CL MCGILL UNIV, MONTREAL, CANADA HO MCGILL UNIV C1 NASA,AMES RES CTR,DIV EARTH SYST SCI,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS PY 1994 BP 347 EP 366 PG 20 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BD08K UT WOS:A1994BD08K00025 ER PT B AU WENZEL, EM AF WENZEL, EM BE Kramer, G TI SPATIAL SOUND AND SONIFICATION SO AUDITORY DISPLAY: SONIFICATION, AUDIFICATION, AND AUDITORY INTERFACES SE SANTA FE INSTITUTE STUDIES IN THE SCIENCES OF COMPLEXITY - PROCEEDINGS VOLUMES LA English DT Proceedings Paper CT 1st International Conference on Auditory Display (ICAD) CY OCT, 1992 CL SANTA FE, NM SP SANTA FE INST STUDIES SCI COMPLEX C1 NASA,AMES RES CTR,DIV AEROSP HUMAN FACTORS RES,MOFFETT FIELD,CA 94035. NR 0 TC 6 Z9 6 U1 0 U2 0 PU ADDISON-WESLEY PUBL CO PI READING PA ROUTE 128, READING, MA 01867 BN 0-201-62603-9 J9 SFI S SCI C PY 1994 VL 18 BP 127 EP 150 PG 24 WC Computer Science, Interdisciplinary Applications; Computer Science, Software Engineering; Ergonomics; Psychology SC Computer Science; Engineering; Psychology GA BC41Q UT WOS:A1994BC41Q00004 ER PT J AU TINGAY, SJ AF TINGAY, SJ TI CENTAURUS-A, THE CORE OF THE PROBLEM SO AUSTRALIAN JOURNAL OF PHYSICS LA English DT Article; Proceedings Paper CT John G Bolton Memorial Symposium CY DEC 09-10, 1993 CL PARKES OBSERVATORY, PARKES, AUSTRALIA HO PARKES OBSERVATORY ID RADIO STRUCTURE; 8.4 GHZ; NGC-5128; SYSTEM; STAR; JET AB The bright, peculiar elliptical galaxy Centaurus A (NGC 5128, PKS 1322-427) was one of the first extragalactic radio sources to be optically identified (Bolton et al. 1949). At a distance of 4 Mpc, Centaurus A is the closest active radio galaxy and affords the highest linear imaging resolution (1 mas approximate to 0.02 pc) and hence the best prospects for studying an active nucleus close to the central radio source. We present the results of multi-epoch, 8.4-GHz, very long baseline interferometry (VLBI), imaging observations of the nucleus made over the past three years. The nucleus possesses a core-jet structure where the inner portion of the jet shows apparent linear motion with a velocity substantially less than the speed of light. C1 CSIRO,AUSTRALIA TELESCOPE NATL FACIL,CANBERRA,ACT,AUSTRALIA. JET PROPULS LAB,PASADENA,CA. UNIV TASMANIA,HOBART,TAS 7001,AUSTRALIA. UNIV SYDNEY,SYDNEY,NSW 2006,AUSTRALIA. CURTIN UNIV TECHNOL,PERTH,WA 6001,AUSTRALIA. UNIV WESTERN AUSTRALIA,NEDLANDS,WA 6009,AUSTRALIA. UNIV ADELAIDE,ADELAIDE,SA,AUSTRALIA. UNIV WESTERN SYDNEY,SYDNEY,NSW,AUSTRALIA. RP TINGAY, SJ (reprint author), AUSTRALIAN NATL UNIV,MT STROMLO & SIDING SPRING OBSERV,WESTON,ACT 2611,AUSTRALIA. RI Tingay, Steven/B-5271-2013 NR 17 TC 5 Z9 5 U1 0 U2 0 PU C S I R O PUBLICATIONS PI COLLINGWOOD PA 150 OXFORD ST, PO BOX 1139, COLLINGWOOD VICTORIA 3066, AUSTRALIA SN 0004-9506 J9 AUST J PHYS JI Aust. J. Phys. PY 1994 VL 47 IS 5 BP 619 EP 624 PG 6 WC Physics, Multidisciplinary SC Physics GA PT317 UT WOS:A1994PT31700021 ER PT B AU TAYLOR, LW RAMAKRISHNAN, J AF TAYLOR, LW RAMAKRISHNAN, J BE Goodwin, GC Evans, RJ TI DYNAMIC ANALYSIS OF SPACE STATION FREEDOM ASSEMBLY VIA CONTINUUM MODELING SO AUTOMATIC CONTROL - WORLD CONGRESS 1993, VOL 3: APPLICATION I LA English DT Proceedings Paper CT 12th Triennial World Congress of the International-Federation-of-Automatic-Control CY JUL 18-23, 1993 CL SYDNEY, AUSTRALIA SP INT FEDERAT AUTOMAT CONTROL, INT ASSOC MATH & COMP SIMULAT, INT FEDERAT INFORMAT PROC, INT FEDERAT OPERAT RES SOC, INT MEASUREMENT CONFEDERAT, INST ENGINEERS, AUSTR, UNIV NEWCASTLE, AUSTR, UNIV NEW S WALES DE CONTINUUM MODELING; CONTROL STRUCTURES INTERACTION; ROBOTICS C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB BN 0-08-042214-4 PY 1994 BP 851 EP 854 PG 4 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Biomedical; Transportation SC Automation & Control Systems; Engineering; Transportation GA BC03D UT WOS:A1994BC03D00184 ER PT J AU GREENLEAF, JE BERNAUER, EM ERTL, AC BULBULIAN, R BOND, M AF GREENLEAF, JE BERNAUER, EM ERTL, AC BULBULIAN, R BOND, M TI ISOKINETIC STRENGTH AND ENDURANCE DURING 30-DAY 6-DEGREES HEAD-DOWN BED REST WITH ISOTONIC AND ISOKINETIC EXERCISE TRAINING SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Article AB The purpose of our study was to determine if an intensive, intermittent, isokinetic, lower extremity exercise training program would attenuate or eliminate the decrease of muscular strength and endurance during prolonged bed rest (BR). The 19 male subjects (36 +/- 1 yr, 178 +/- 2 cm, 76.5 +/- 1.7 kg) were allocated into a no exercise (NOE) training group (N = 5), an isotonic (lower extremity cycle ergometer) exercise (ITE) training group (N = 7), and an isokinetic (isokinetic knee flexion-extension) exercise (IKE) training group (N = 7). Peak knee (flexion and extension) and shoulder (abduction-adduction) functions were measured weekly in all groups with one 5-repetition set. After BR, average knee extension total work decreased by 16% with NOE, increased by 27% with IKE, and was unchanged with ITE. Average knee flexion total work and peak torque (strength) responses were unchanged in all groups. Force production increased by 20% with IKE and was unchanged with NOE and ITE. Shoulder total work was unchanged in all groups, while gross average peak torque increased by 27% with ITE and by 22% with IKE, and was unchanged with NOE. Thus, while ITE training can maintain some isokinetic functions during BR, maximal intermittent IKE training can increase other functions above pre-BR control levels. C1 LOREDAN BIOMED,DAVIS,CA. UNIV CALIF DAVIS,HUMAN PERFORMANCE LAB,DAVIS,CA 95616. RP GREENLEAF, JE (reprint author), NASA,AMES RES CTR,DIV LIFE SCI 23911,HUMAN ENVIRONM PHYSIOL LAB,MOFFETT FIELD,CA 94035, USA. NR 19 TC 29 Z9 31 U1 1 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 JAN PY 1994 VL 65 IS 1 BP 45 EP 50 PG 6 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA MQ236 UT WOS:A1994MQ23600010 PM 8117226 ER PT S AU MARTONE, M AF MARTONE, M BE Riedler, W Torkar, KM TI LONG-DURATION BIAXIAL CYLINDER TESTING OF BALLOON GRADE POLYETHYLENE FILMS WITH EMPHASIS ON AUTOMATED DATA-ACQUISITION AND CONTROL SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB Characterization of a 2-dimensional material constitutive model in the practical biaxial state for engineering utility of balloon envelope structural analysis is achievable with laboratory cylinder tests. Hoop(circumferential), and longitudinal strains are time-wise measured on axially loaded pressurized cylinders. Pre-programmed ramped loading changes as well as precise long term pressure control are achieved through cascaded PID flow control loops that are part of an integrated data acquisition and process control system. Real time data reduction and analysis allow monitoring of unattended rests that have durations of up to a month. Measured and controlled parameters and variables are discussed; data analysis techniques are reviewed. RP MARTONE, M (reprint author), NEW MEXICO STATE UNIV, PHYS SCI LAB, NASA, GSFC, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 3 TC 0 Z9 0 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 21 EP 25 DI 10.1016/0273-1177(94)90062-0 PG 5 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00003 ER PT S AU SAID, MA GREET, R AF SAID, MA GREET, R BE Riedler, W Torkar, KM TI CHARACTERIZATION OF PATH EFFECTS ON THE PROPERTIES OF BALLOON FILMS SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB The effect of stress and temperature path on the mechanical properties of a balloon film material (Astrofilm E2) have been studied using two techniques. The first technique is based on uniaxial tensile measurements of prestrained strips of the film as a function of temperature. Data are analyzed in terms of two temperature coefficients, defined here as a stiffness coefficient and a strength coefficient; and by comparing the areas under the stress-strain curves. The second technique investigated the effect of stress and temperature path on inflated cylinders of the same material. The changes in the mechanical properties due to preconditioning in the biaxial stress state were evaluated using the ball burst test. Preliminary findings indicate that the material is stress and temperature path dependent. Changes in stiffness coefficient, draw strength and toughness were measured and discussed. The above techniques may be suitable to document path dependent changes, and to discriminate among films of different manufacture. C1 UNIV SO COLORADO, PUEBLO, CO 81001 USA. RP SAID, MA (reprint author), NASA, GODDARD SPACE FLIGHT CTR, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 27 EP 30 DI 10.1016/0273-1177(94)90063-9 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00004 ER PT S AU SAID, MA AF SAID, MA BE Riedler, W Torkar, KM TI MORPHOLOGICAL CHARACTERIZATION OF SELECTED BALLOON FILMS AND ITS EFFECTS ON BALLOON PERFORMANCES SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB Morphological characterization of several polyethylene balloon films have been studied using various techniques. The objective is to determine, if any, differentiating structural of morphological features that can be related to the performance of these balloon film materials. The results of the study indicate that the films are composed of either LLDPE or LDPE. A selective examination of these data imply that films with limited degree of branching and larger crystallites size (same % crystallinity) showed good mechanical properties that appear to correlate with their high level of success in balloon flights. RP SAID, MA (reprint author), NASA, GODDARD SPACE FLIGHT CTR, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 10 TC 1 Z9 1 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 31 EP 34 DI 10.1016/0273-1177(94)90064-7 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00005 ER PT S AU SCHUR, WW AF SCHUR, WW BE Riedler, W Torkar, KM TI RECENT ADVANCES IN THE STRUCTURAL-ANALYSIS OF SCIENTIFIC BALLOONS SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB The analysis of balloon envelopes by the finite element (FE) method is plagued by convergence problems. A practical FE analysis approach is based on the fact that in thin shells with non-zero Gaussian curvature the membrane solution component is essentially decoupled from the bending solution component. A proxy-problem is solved by using a small artificial bending stiffness that assures convergence without significantly affecting the membrane solution component. This approach has been previously validated on slightly overpressurized balloon envelopes. Extensions of this approach to more difficult problems in the structural analysis of balloon envelopes are presented. The convergence forcing modelling measures are discussed. Implications of the findings of the analysis results to future balloon designs are also discussed. RP SCHUR, WW (reprint author), NEW MEXICO STATE UNIV, PHYS SCI LAB, FIELD ENGN GRP, NASA, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 2 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 43 EP 47 DI 10.1016/0273-1177(94)90067-1 PG 5 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00008 ER PT S AU BELL, DP AF BELL, DP BE Riedler, W Torkar, KM TI A COMPARATIVE-STUDY OF INTERNALLY AND EXTERNALLY CAPPED BALLOONS USING SMALL-SCALE TEST BALLOONS SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB Caps have been used to structurally reinforce scientific research balloons since the late 1950's. The scientific research balloons used by the National Aeronautics and Space Administration (NASA) use internal caps. A NASA cap placement specification does not exist since no empirical information exists concerning cap placement. To develop a cap placement specification, NASA has completed two in-hangar inflation tests comparing the structural contributions of internal caps and external caps. The tests used small scale test balloons designed to develop the highest possible stresses within the constraints of the hangar and balloon materials. An externally capped test balloon and an internally capped test balloon were designed, built, inflated, and simulated to determine the structural contributions and benefits of each. The results of the tests and simulations are presented. RP BELL, DP (reprint author), NASA, GODDARD SPACE FLIGHT CTR, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 1 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 49 EP 52 DI 10.1016/0273-1177(94)90068-X PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00009 ER PT S AU NEEDLEMAN, HC AF NEEDLEMAN, HC BE Riedler, W Torkar, KM TI STATUS OF THE NASA BALLOON PROGRAM SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB The U. S. National Aeronautics and Space Administration (NASA) Balloon Program has been highly successful since recovering from the catastrophic balloon failure problems of the early to mid 1980s. Balloons have continued to perform at unprecedented success rates. The comprehensive research and development (R&D) effort has continued with advances being made across the spectrum of balloon related disciplines. The long duration balloon project will be transitioning from a development effort to an operational capability this year. Recently, emphasis has been placed on the development and implementation of new support systems and facilities. A new permanent launch facility at Fort Sumner, New Mexico has been established. New ground station support equipment is being implemented, and a new heavy load launch vehicle is scheduled to be implemented in 1992. The progress, status and future plans for these and other aspects of the NASA program will be presented. RP NEEDLEMAN, HC (reprint author), NASA, GODDARD SPACE FLIGHT CTR, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 129 EP 135 DI 10.1016/0273-1177(94)90079-5 PG 7 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00020 ER PT S AU SMITH, IS AF SMITH, IS BE Riedler, W Torkar, KM TI OVERVIEW OF THE NASA BALLOON R-AND-D PROGRAM SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB The catastrophic balloon failures during the first half of the 1980's identified the need for a comprehensive and continuing balloon research and development (R&D) commitment by NASA. Technical understanding was lacking in many of the disciplines and processes associated with scientific ballooning. A comprehensive balloon R&D plan was developed in 1986 and implemented in 1987. The objectives were to develop the understanding of balloon system performance, limitations, and failure mechanisms. The program consisted of five major technical areas: structures, performance and analysis, materials, chemistry and processing, and quality control. Research activities have been conducted at NASA/Goddard Space Flight Center (GSFC)-Wallops Flight Facility (WFF), other NASA centers and government facilities, universities, and the balloon manufacturers. Several new and increased capabilities and resources have resulted from this activity. The findings, capabilities, and plans of the balloon R&D program are presented. RP SMITH, IS (reprint author), NASA, GODDARD SPACE FLIGHT CTR, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 30 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 137 EP 146 DI 10.1016/0273-1177(94)90080-9 PG 10 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00021 ER PT S AU JONES, WV AF JONES, WV BE Riedler, W Torkar, KM TI EVOLUTION OF THE NASA LONG-DURATION BALLOON PROGRAM SO BALLOON TECHNOLOGY AND OBSERVATIONS SE ADVANCES IN SPACE RESEARCH-SERIES LA English DT Review AB The development of long-duration ballooning techniques to support flights of 1-2 ton payloads for periods up to 2 weeks, possibly even longer, offers a near-space scientific mission capability with an order of magnitude improvement over traditional balloon flights. This revolution in scientific research ballooning began with the solution of the manufacturing difficulties that plagued the program in the first half of the 1980's, and it has culminated in the early 1990's with three successive circumnavigations of the Antarctic continent in 9 to 14 day flights. A complementary capability in the Northern hemisphere, which would approximately double the number of flights that could be supported each year, is needed to accommodate the trend for conventional payloads to be modified, or developed, for long-duration flights. Plans are already underway to employ the order-of-magnitude increased flight time for support of multi-flight research programs that will produce results comparable to some space missions. An overview of the current status and near-term plans for ballooning will be presented, along with a discussion of some major science initiatives that have been enabled. RP JONES, WV (reprint author), NASA HEADQUARTERS, DIV SPACE PHYS, CODE SS, WASHINGTON, DC 20546 USA. NR 8 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0273-1177 BN 0-08-042473-2 J9 ADV SPACE RES-SERIES PY 1994 VL 14 IS 2 BP 191 EP 200 PG 10 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BZ78B UT WOS:A1993BZ78B00030 ER PT J AU SZCZUR, M AF SZCZUR, M TI USABILITY TESTING ON A BUDGET - A NASA USABILITY TEST-CASE STUDY SO BEHAVIOUR & INFORMATION TECHNOLOGY LA English DT Article AB Okay, so you've purchased a graphical user interface (GUI) builder tool to help you quickly build a sophisticated user interface, and your developers promise to follow a particular style guide (e.g., OSF/Motif, Apple/Macintosh) when creating the GUI. This is definitely a step in the right direction, but it is no guarantee that the application's user interface will be usable; that is, where the user interface helps, rather than hinders, the end-users from doing their jobs. Numerous techniques for testing the usability and user satisfaction of an application's GUI are available, such as design walk-throughs, field testing with beta releases, demonstrations of prototypes to future end-users, and user questionnaires. One of the most effective techniques is usability testing with defined tasks and metrics, and yet, it is not commonly used in project development life cycles at the National Aeronautics and Space Agency (NASA). This paper discusses a low-budget, but effective, approach we used at NASA's Goddard Space Flight Center (GSFC) to perform structured usability testing. It did not require any additional staff or a usability laboratory, but did successfully identify problems with the application's user interface. The purpose of the usability testing was two-fold: (1) to test the process used in the usability test; and (2) to apply the results of the test to improving the subject software's user interface. This paper will discuss the results from the test and the lessons learned. It will conclude with a discussion of future plans to conduct cost benefit analysis and integrate usability testing as a required step in a project's development life cycle. RP SZCZUR, M (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771, USA. NR 10 TC 3 Z9 3 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0144-929X J9 BEHAV INFORM TECHNOL JI Behav. Inf. Technol. PD JAN-APR PY 1994 VL 13 IS 1-2 BP 106 EP 118 DI 10.1080/01449299408914589 PG 13 WC Computer Science, Cybernetics; Ergonomics SC Computer Science; Engineering GA ND715 UT WOS:A1994ND71500014 ER PT S AU HURWITZ, FI KACIK, TA BU, XY MASNOVI, J HEIMANN, PJ BEYENE, K AF HURWITZ, FI KACIK, TA BU, XY MASNOVI, J HEIMANN, PJ BEYENE, K BE Cheetham, AK Brinker, CJ Mecartney, ML Sanchez, C TI CONVERSION OF POLYMERS OF METHYL SILANE AND VINYLSILANE TO SIC CERAMICS SO BETTER CERAMICS THROUGH CHEMISTRY VI SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT 6th Symposium on Better Ceramics Through Chemistry, at the 1994 MRS Spring Meeting CY APR 04-08, 1994 CL SAN FRANCISCO, CA SP MAT RES SOC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 1-55899-246-4 J9 MATER RES SOC SYMP P PY 1994 VL 346 BP 623 EP 628 PG 6 WC Engineering, Chemical; Materials Science, Ceramics SC Engineering; Materials Science GA BB59M UT WOS:A1994BB59M00091 ER PT J AU CHADWICK, OA KELLY, EF MERRITTS, DM AMUNDSON, RG AF CHADWICK, OA KELLY, EF MERRITTS, DM AMUNDSON, RG TI CARBON-DIOXIDE CONSUMPTION DURING SOIL DEVELOPMENT SO BIOGEOCHEMISTRY LA English DT Article DE CARBON SEQUESTRATION; LANDSCAPE GEOCHEMISTRY; MINERAL WEATHERING ID UPLIFTED MARINE TERRACES; NORTHERN CALIFORNIA; CLIMATE; EVOLUTION; RATES; CHEMISTRY; CYCLE; BASIN AB Carbon is sequestered in soils by accumulation of recalcitrant organic matter and by bicarbonate weathering of silicate minerals. Carbon fixation by ecosystems helps drive weathering processes in soils and that in turn diverts carbon from annual photosynthesis-soil respiration cycling into the long-term geological carbon cycle. To quantify rates of carbon transfer during soil development in moist temperate grassland and desert scrubland ecosystems, we measured organic and inorganic residues derived from the interaction of soil biota and silicate mineral weathering for twenty-two soil profiles in arkosic sediments of differing ages. In moist temperate grasslands, net annual removal of carbon from the atmosphere by organic carbon accumulation and silicate weathering ranges from about 8.5 g m-2 yr-1 for young soils to 0.7 g m-2 yr-1 for old soils. In desert scrublands, net annual carbon removal is about 0.2 g m-2 yr-1 for young soils and 0.01 g m-2 yr-1 for old soils. In soils of both ecosystems, organic carbon accumulation exceeds CO2 removal by weathering, however, as soils age, rates of CO2 consumption by weathering accounts for greater amounts of carbon sequestration, increasing from 2% to 8% in the grassland soils and from 2% to 40% in the scrubland soils. In soils of desert scrublands, carbonate accumulation far outstrips organic carbon accumulation, but about 90% of this mass is derived from aerosolic sources that do not contribute to long-term sequestration of atmospheric carbon dioxide. C1 COLORADO STATE UNIV,DEPT AGRON,FT COLLINS,CO 80523. FRANKLIN & MARSHALL COLL,DEPT GEOL,LANCASTER,PA 17604. UNIV CALIF BERKELEY,BERKELEY,CA 94720. RP CHADWICK, OA (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. RI Amundson, Ronald /E-2654-2015 NR 42 TC 56 Z9 59 U1 1 U2 10 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-2563 J9 BIOGEOCHEMISTRY JI Biogeochemistry PY 1994 VL 24 IS 3 BP 115 EP 127 PG 13 WC Environmental Sciences; Geosciences, Multidisciplinary SC Environmental Sciences & Ecology; Geology GA NU088 UT WOS:A1994NU08800001 ER PT J AU KRUUK, H KANCHANASAKA, B OSULLIVAN, S WANGHONGSA, S AF KRUUK, H KANCHANASAKA, B OSULLIVAN, S WANGHONGSA, S TI NICHE SEPARATION IN 3 SYMPATRIC OTTERS LUTRA-PERSPICILLATA, L-LUTRA AND AONYX-CINEREA IN HUAI-KHA-KHAENG, THAILAND SO BIOLOGICAL CONSERVATION LA English DT Article DE DIET; HABITAT; COMPETITION; EXCLUSION; SCENT-MARKING ID SHETLAND; FOOD; SIZE AB Three species of otter, Lutra lutra, L. perspicillata and Aonyx cinerea, occur sympatrically in the Huai Kha Khaeng river and tributaries, Thailand. Small differences in their use of major sections of the river are described, as are variations in micro-habitat and in food: L. perspicillata is the most specialized fish eater, taking larger fish than L. lutra which also eats more amphibians, and A. cinerea is a crab specialist. However, on all scores there is a large overlap between the three species, especially between the two Lutra, with some evidence for interaction leading to exclusion. Implications for conservation management of the area are discussed. C1 ROYAL FOREST DEPT,WILDLIFE CONSERVAT SECT,BANGKOK 10900,THAILAND. NATL MARINE FISHERIES SERV,PASCAGOULA,MS 39568. RP KRUUK, H (reprint author), INST TERR ECOL,BANCHORY RES STN,HILL BRATHENS,BANCHORY AB31 4BY,KINCARDINE,SCOTLAND. NR 26 TC 37 Z9 45 U1 3 U2 16 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0006-3207 J9 BIOL CONSERV JI Biol. Conserv. PY 1994 VL 69 IS 1 BP 115 EP 120 DI 10.1016/0006-3207(94)90334-4 PG 6 WC Biodiversity Conservation; Ecology; Environmental Sciences SC Biodiversity & Conservation; Environmental Sciences & Ecology GA NM352 UT WOS:A1994NM35200013 ER PT J AU SMITH, W BERRIEN, P POTTHOFF, T AF SMITH, W BERRIEN, P POTTHOFF, T TI SPAWNING PATTERNS OF BLUEFISH, POMATOMUS-SALTATRIX, IN THE NORTHEAST CONTINENTAL-SHELF ECOSYSTEM SO BULLETIN OF MARINE SCIENCE LA English DT Article ID NEW-YORK BIGHT; UNITED-STATES; GROWTH; FISHES AB Bluefish eggs and larvae were collected in the Northeast Continental Shelf Ecosystem (NCSE) from 1977 through 1987 as part of a fisheries ecosystem study designed to establish baselines against which changes in species composition and diversity could be observed and evaluated. Spawning began as early as May when eggs and larvae occurred off Cape Hatteras, advanced northward with time, peaked in July when eggs and larvae occurred as far north as Cape Cod, and ended in late August. Unlike earlier studies that argue for multiple and distinct spawning seasons, this 11-year study concludes that spawning in the NCSE represents the continuation of a protracted season that begins in late winter in slope waters off the southeastern United States and progresses northward with time. Results add to a growing block of evidence that supports a unit stock designation for the bluefish population along the east coast of the United States. C1 NATL MARINE FISHERIES SERV,NE FISHERIES SCI CTR,NARRAGANSETT LAB,NARRAGANSETT,RI 02882. RP SMITH, W (reprint author), NATL MARINE FISHERIES SERV,NE FISHERIES SCI CTR,SANDY HOOK LAB,HIGHLANDS,NJ 07732, USA. NR 24 TC 32 Z9 32 U1 1 U2 2 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD JAN PY 1994 VL 54 IS 1 BP 8 EP 16 PG 9 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA NG919 UT WOS:A1994NG91900002 ER PT J AU PARRISH, FA POLOVINA, JJ AF PARRISH, FA POLOVINA, JJ TI HABITAT THRESHOLDS AND BOTTLENECKS IN PRODUCTION OF THE SPINY LOBSTER (PANULIRUS-MARGINATUS) IN THE NORTHWESTERN HAWAIIAN-ISLANDS SO BULLETIN OF MARINE SCIENCE LA English DT Article ID HOMARUS-AMERICANUS; REEF FISHES; PREDATION; ARGUS; RECRUITMENT; SHELTER; MICROHABITAT; SETTLEMENT; MACROALGAE; ABUNDANCE AB Variations in landings from the lobster fishery among banks of the northwestern Hawaiian Archipelago were compared with bank topography and benthic habitat characteristics. Summit depth, harvest area, amount of shallow habitat, and latitude were considered in relation to pre-exploitation research catch rates and 6 years of commercial fishery landings. A threshold between lobster production and the depth of bank summit was observed; banks with summits deeper than 30 m yielded few lobsters. The effect of benthic habitat relief was then examined for three selected, bathymetrically similar banks, two commercially productive and one unproductive. Percent cover of habitat variables with characteristic relief such as sand, algae, and coral outcrops were measured on each of the banks during 70 scuba dives. Juvenile lobster stages were found significantly associated with habitat scale. The nonlinear relationship indicated both high and low extremes in relief yield poor catch per unit of effort (CPUE). Only the variable intermediate relief (5-30 cm) was associated with high sublegal lobster CPUE. The two productive banks had much more benthic relief at this scale than did the unproductive, suggesting that the abundance of intermediate relief habitat represents a bottleneck to adult lobster production. RP PARRISH, FA (reprint author), NOAA,NATL MARINE FISHERIES SERV,SW FISHERIES SCI CTR HONOLULU LAB,2570 DOLE ST,HONOLULU,HI 96822, USA. NR 42 TC 27 Z9 30 U1 1 U2 3 PU ROSENSTIEL SCH MAR ATMOS SCI PI MIAMI PA 4600 RICKENBACKER CAUSEWAY, MIAMI, FL 33149 SN 0007-4977 J9 B MAR SCI JI Bull. Mar. Sci. PD JAN PY 1994 VL 54 IS 1 BP 151 EP 163 PG 13 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA NG919 UT WOS:A1994NG91900012 ER PT J AU HYON, J AF HYON, J TI A STANDARD FOR WRITING RECORDABLE CDS SO BYTE LA English DT Article RP HYON, J (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU BYTE PUBL INC PI PETERBOROUGH PA 70 MAIN ST, PETERBOROUGH, NH 03458 SN 0360-5280 J9 BYTE JI Byte PD JAN PY 1994 VL 19 IS 1 BP 231 EP & PG 0 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA MM950 UT WOS:A1994MM95000038 ER PT J AU JOYCE, JE HEINTZ, R SMOKER, WW GHARRETT, AJ AF JOYCE, JE HEINTZ, R SMOKER, WW GHARRETT, AJ TI SURVIVAL TO FRY AND SEAWATER TOLERANCE OF DIPLOID AND TRIPLOID HYBRIDS BETWEEN CHINOOK (ONCORHYNCHUS-TSHAWYTSCHA), CHUM (ONCORHYNCUS-KETA), AND PINK SALMON (ONCORHYNCHUS-GORBUSCHA) SO CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES LA English DT Article; Proceedings Paper CT 11th Lowell-Wakefield-Fisheries International Symposium on Genetics of Subarctic Fish and Shellfish CY MAY 17-19, 1993 CL JUNEAU, AK SP ALASKA DEPT FISH & GAME, NATL MARINE FISHERIES SERV, NATL PK SERV, N PACIFIC FISHERY MANAGEMENT COUNCIL, US FISH & WILDLIFE SERV, UNIV ALASKA FAIRBANKS, ALASKA SEA GRANT COLL PROGRAM ID RAINBOW-TROUT; COHO SALMON; GAIRDNERI RICHARDSON; GYNOGENESIS; PERFORMANCE; KISUTCH AB We investigated the viability and seawater tolerance of all possible combinations of triploid and diploid hybrids between chinook (Oncorhynchus tshawytscha), chum (O. keta), and pink salmon (O. gorbuscha) in two brood years. Triploidy (induced by heat shock shortly after fertilization) was determined by flow cytometry of blood taken from a sample of the fish. A factorial mating design was used to estimate the effects of cross, heat shock (ploidy), and their interaction. With the exception of the chinook (female) X chum (male) cross, all combinations produced offspring that survived to yolk absorption. Survival of heat-shocked groups was lower than that of diploid controls at the eyed stage and at hatching, but not different from diploids between hatching and yolk absorption. Induced triploidy did not increase the viability of interspecies hybrids. The level of triploid induction averaged across all heat-shocked crosses was 88% in one year and 95% in the other. Seawater tolerance (measured by 24-h seawater challenge survival) was higher in chinook hybrids with pink and chum salmon than in chinook controls. Seawater tolerance did not differ between diploid controls and heat-shocked triploid groups. Combinations that had seawater tolerance shortly after yolk absorption include chinook x pink, pink x chinook, and chum x chinook. C1 UNIV ALASKA,SCH FISHERIES & OCEAN SCI,DIV FISHERIES,JUNEAU,AK 99801. RP JOYCE, JE (reprint author), NOAA,NATL MARINE FISHERIES SERV,ALASKA FISHERIES SCI CTR,AUKE BAY LAB,11305 GLACIER HIGHWAY,JUNEAU,AK 99801, USA. RI Perez , Claudio Alejandro/F-8310-2010 OI Perez , Claudio Alejandro/0000-0001-9688-184X NR 28 TC 4 Z9 4 U1 1 U2 2 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0706-652X J9 CAN J FISH AQUAT SCI JI Can. J. Fish. Aquat. Sci. PY 1994 VL 51 SU 1 BP 25 EP 30 DI 10.1139/f94-291 PG 6 WC Fisheries; Marine & Freshwater Biology SC Fisheries; Marine & Freshwater Biology GA QR475 UT WOS:A1994QR47500005 ER PT J AU KONDZELA, CM GUTHRIE, CM HAWKINS, SL RUSSELL, CD HELLE, JH GHARRETT, AJ AF KONDZELA, CM GUTHRIE, CM HAWKINS, SL RUSSELL, CD HELLE, JH GHARRETT, AJ TI GENETIC-RELATIONSHIPS AMONG CHUM SALMON POPULATIONS IN SOUTHEAST ALASKA AND NORTHERN BRITISH-COLUMBIA SO CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES LA English DT Article; Proceedings Paper CT 11th Lowell-Wakefield-Fisheries International Symposium on Genetics of Subarctic Fish and Shellfish CY MAY 17-19, 1993 CL JUNEAU, AK SP ALASKA DEPT FISH & GAME, NATL MARINE FISHERIES SERV, NATL PK SERV, N PACIFIC FISHERY MANAGEMENT COUNCIL, US FISH & WILDLIFE SERV, UNIV ALASKA FAIRBANKS, ALASKA SEA GRANT COLL PROGRAM ID ONCORHYNCHUS-KETA; STOCK IDENTIFICATION AB Allozymes from 46 loci were analyzed from chum salmon (Oncorhynchus keta) collected at 61 locations in southeast Alaska and northern British Columbia. Of the 42 variable loci, 21 had a common allele frequency <0.95. We observed significant heterogeneity within and among six regional groups: central southeast Alaska, Prince of Wales island area, southern southeast Alaska - northern British Columbia, north-central British Columbia, and two groups in the Queen Charlotte islands. Genetic variation among regions was significantly greater than within regions. The three island groups were distinct from each other and from the mainland populations. Allele frequencies were stable over time in 14 of 15 locations sampled for more than 1 yr. The geographic basis for heterogeneity among regions is confounded in part by spawning-time differences. The Prince of Wales and Queen Charlotte populations spawn in the fall; the mainland populations spawn mainly in the summer, although some overlap exists. Overall, most genetic diversity (97%) occurred within sampling locations; the remaining diversity was distributed almost equally within and among regions. Our genetic data may provide fishery managers a means to estimate stock composition in the mixed-stock fisheries near this boundary between the United States and Canada. C1 UNIV ALASKA,SCH FISHERIES & OCEAN SCI,JUNEAU,AK 99801. RP KONDZELA, CM (reprint author), NOAA,NATL MARINE FISHERIES SERV,ALASKA FISHERIES SCI CTR,AUKE BAY LAB,11305 GLACIER HIGHWAY,JUNEAU,AK 99801, USA. NR 33 TC 34 Z9 36 U1 0 U2 3 PU NATL RESEARCH COUNCIL CANADA PI OTTAWA PA RESEARCH JOURNALS, MONTREAL RD, OTTAWA ON K1A 0R6, CANADA SN 0706-652X J9 CAN J FISH AQUAT SCI JI Can. J. Fish. Aquat. Sci. PY 1994 VL 51 SU 1 BP 50 EP 64 DI 10.1139/f94-295 PG 15 WC Fisheries; Marine & Freshwater Biology SC Fisheries; Marine & Freshwater Biology GA QR475 UT WOS:A1994QR47500009 ER PT J AU HUNG, CC KUCERA, D AF HUNG, CC KUCERA, D TI GRAPHITE-INTERCALATION COMPOUND WITH IODINE AS THE MAJOR INTERCALATE SO CARBON LA English DT Article DE IODINE INTERCALATION; INTERCALATION MECHANISM; HALOGEN EXCHANGE; SURFACE COMPOSITION AB Halogenated graphite CBrxIy (1 < y/x < 10) was made by exposing graphite materials to either pure Br-2 or an I-2/Br-2/HBr mixture to initiate the reaction, and then to iodine vapor containing a small amount of Br-2/HBr/IBr to complete the intercalation reaction. Wetting of the graphite materials by the I-2/Br-2/HBr mixture is needed to start the reaction, and a small amount of Br-2/HBr/IBr is needed to complete the charge transfer between iodine and carbon. The interplanar spacings for the graphite materials need to be in the 3.35 to 3.41 Angstrom range. The X-ray diffraction data obtained from the halogenated HOPG indicate that the distance between the two carbon layers containing intercalate is 7.25 Angstrom. Electrical resistivity of the fiber product is from 3 to 6.5 times the pristine value. The presence of a small amount of isoprene rubber in the reaction significantly increased the iodine-to-bromine ratio in the product. In this reaction, rubber is known to generate HBr and to slowly remove bromine from the vapor. The halogenation generally caused a 22% to 25% weight increase. The halogens were found uniformly distributed in the product interior. However, although the surface contains very little iodine, it has high concentrations of bromine and oxygen. It is believed that the high concentrations of bromine and oxygen in this surface cause the halogenated fiber to be more resistant to structural damage during subsequent fluorination to fabricate graphite fluoride fibers. C1 CLEVELAND STATE UNIV,CLEVELAND,OH 44145. RP HUNG, CC (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 11 TC 2 Z9 2 U1 1 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0008-6223 J9 CARBON JI Carbon PY 1994 VL 32 IS 8 BP 1441 EP 1448 DI 10.1016/0008-6223(94)90138-4 PG 8 WC Chemistry, Physical; Materials Science, Multidisciplinary SC Chemistry; Materials Science GA QC571 UT WOS:A1994QC57100007 ER PT B AU BRIGHT, MM MELCHER, KJ QAMMAR, HK HARTLEY, TT AF BRIGHT, MM MELCHER, KJ QAMMAR, HK HARTLEY, TT BE Wisniewski, HS TI DESK-TOP CHAOTIC SYSTEMS - INTUITION AND VISUALIZATION SO CHAOS/NONLINEAR DYNAMICS: METHODS AND COMMERCIALIZATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Chaos/Nonlinear Dynamics: Methods and Commercialization CY JUL 12-13, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LEWIS RES CTR,ADV CONTROLS TECHNOL BRANCH,CLEVELAND,OH 44135. 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 0-8194-1286-4 J9 P SOC PHOTO-OPT INS PY 1994 VL 2037 BP 226 EP 237 DI 10.1117/12.167527 PG 12 WC Mathematics, Applied; Optics SC Mathematics; Optics GA BA10H UT WOS:A1994BA10H00020 ER PT J AU YOUNG, K CRUTCHFIELD, JP AF YOUNG, K CRUTCHFIELD, JP TI FLUCTUATION SPECTROSCOPY SO CHAOS SOLITONS & FRACTALS LA English DT Article ID STRANGE ATTRACTORS; CHAOS; COMPLEXITY; SYSTEMS AB We review the thermodynamics of estimating the statistical fluctuations of an observed process. Since any statistical analysis involves a choice of model class-either explicitly or implicitly -we demonstrate the benefits of a careful choice. For each of three classes a particular model is reconstructed from data streams generated by four sample processes. Then each estimated model's thermodynamic structure is used to estimate the typical behavior and the magnitude of deviations for the observed system. These arc then compared to the known fluctuation properties. The type of analysis advocated here, which uses estimated model class information, recovers the correct statistical structure of these processes from simulated data. The current alternative-direct estimation of the Renyi entropy from time series histograms-uses neither prior nor reconstructed knowledge of the model class. And, in most cases, it fails to recover the process's statistical structure from finite data-unpredictability is overestimated. In this analysis, we introduce the fluctuation complexity as a measure of a process's total range of allowed statistical variation. It is a new and complementary characteristic in that it differs from the process's information production rate and its memory capacity. C1 UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. RP YOUNG, K (reprint author), NASA,AMES RES CTR,DIV SPACE SCI,MAIL STOP 245-3,MOFFETT FIELD,CA 94035, USA. NR 40 TC 14 Z9 14 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0960-0779 J9 CHAOS SOLITON FRACT JI Chaos Solitons Fractals PD JAN PY 1994 VL 4 IS 1 BP 5 EP 39 DI 10.1016/0960-0779(94)90015-9 PG 35 WC Mathematics, Interdisciplinary Applications; Physics, Multidisciplinary; Physics, Mathematical SC Mathematics; Physics GA NC233 UT WOS:A1994NC23300002 ER PT B AU MENDIS, SK KEMENY, SE GEE, RC PAIN, B KIM, Q FOSSUM, ER AF MENDIS, SK KEMENY, SE GEE, RC PAIN, B KIM, Q FOSSUM, ER BE Blouke, MM TI PROGRESS IN CMOS ACTIVE PIXEL IMAGE SENSORS SO CHARGE-COUPLED DEVICES AND SOLID STATE OPTICAL SENSORS IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Charge-Coupled Devices and Solid State Optical Sensors IV CY FEB 07-08, 1994 CL SAN JOSE, CA SP SOC IMAGING SCI & TECHNOL, SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. NR 0 TC 30 Z9 30 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1467-0 J9 P SOC PHOTO-OPT INS PY 1994 VL 2172 BP 19 EP 29 DI 10.1117/12.172769 PG 11 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BA43M UT WOS:A1994BA43M00003 ER PT B AU FOSSUM, ER AF FOSSUM, ER BE Blouke, MM TI ASSESSMENT OF IMAGE SENSOR TECHNOLOGY FOR FUTURE NASA MISSIONS SO CHARGE-COUPLED DEVICES AND SOLID STATE OPTICAL SENSORS IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Charge-Coupled Devices and Solid State Optical Sensors IV CY FEB 07-08, 1994 CL SAN JOSE, CA SP SOC IMAGING SCI & TECHNOL, SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,CTR SPACE MICROELECTR,PASADENA,CA 91109. NR 0 TC 1 Z9 1 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1467-0 J9 P SOC PHOTO-OPT INS PY 1994 VL 2172 BP 38 EP 53 DI 10.1117/12.172771 PG 16 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BA43M UT WOS:A1994BA43M00005 ER PT S AU Heap, S Lanz, T Hubeny, Y AF Heap, S Lanz, T Hubeny, Y BE Ferlet, R VidalMadjar, A TI HST/GHRS observations of Beta Pic SO CIRCUMSTELLAR DUST DISKS AND PLANET FORMATION SE IAP ASTROPHYSICS MEETING LA English DT Meeting Abstract CT 10th Annual IAP Astrophysics Meeting - Circumstellar Dust Disks and Planet Formation CY JUL 04-08, 1994 CL INST ASTROPHYS PARIS, PARIS, FRANCE SP CNRS, IAP HO INST ASTROPHYS PARIS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI heap, sara/E-2237-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE SN 0981-5201 BN 2-86332-173-0 J9 IAP ASTR M PY 1994 BP 367 EP 367 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE70W UT WOS:A1994BE70W00058 ER PT B AU SONNEBORN, G PASCUAL, PR WAMSTEKER, W FRANSSON, C AF SONNEBORN, G PASCUAL, PR WAMSTEKER, W FRANSSON, C BE Clegg, RES Stevens, IR Meikle, WPS TI UV SPECTROSCOPY OF SN-1993J AND DETECTION OF HIGHLY-IONIZED GAS CLOSE TO THE PROGENITOR SO CIRCUMSTELLAR MEDIA IN LATE STAGES OF STELLAR EVOLUTION LA English DT Proceedings Paper CT 34th Herstmonceux Conference on Circumstellar Media in the Late Stages of Stellar Evolution CY JUL 12-16, 1993 CL CAMBRIDGE, ENGLAND SP ROYAL GREENWICH OBSERV, UNIV CAMBRIDGE, INST ASTRON C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 1 Z9 1 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE, CAMBS, ENGLAND CB2 1RP BN 0-521-46551-6 PY 1994 BP 198 EP 202 DI 10.1017/CBO9780511564628.025 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BC41V UT WOS:A1994BC41V00022 ER PT B AU MASON, C AF MASON, C BE Deen, SM TI ROO: A distributed ai toolkit for belief based reasoning agents SO CKBS '94 - PROCEEDINGS OF THE SECOND INTERNATIONAL WORKING CONFERENCE ON COOPERATING KNOWLEDGE BASED SYSTEMS LA English DT Proceedings Paper CT 2nd International Working Conference on Cooperating Knowledge Based Systems (CKBS 94) CY JUN 14-17, 1994 CL UNIV KEELE, KEELE, ENGLAND SP Univ Keele, DAKE Ctr, Dept Trade & Ind, UK, European Research Off US Army, UK, European Union ESPRIT, Marconi, UK HO UNIV KEELE C1 NASA,AMES RES CTR,DIV INFORMAT SCI,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIVERSITY KEELE, DAKE CENTRE PI KEELE PA COMPUTER SCIENCE DEPARTMENT, KEELE, STAFFS, ENGLAND ST5 5BG BN 0-9521789-2-3 PY 1994 BP 331 EP 355 PG 25 WC Computer Science, Artificial Intelligence; Computer Science, Interdisciplinary Applications SC Computer Science GA BD54J UT WOS:A1994BD54J00017 ER PT B AU XIE, TL LANGER, WD ALLEN, M AF XIE, TL LANGER, WD ALLEN, M BE Clemens, DP Barvainis, R TI Turbulent diffusion and its effects on the chemical composition in cloud cores SO CLOUDS, CORES, AND LOW MASS STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 4th Haystack Observatory Conference on Clouds, Cores, and Low Mass Stars CY MAY 18-20, 1994 CL HAYSTACK OBSERV, WESTFORD, MA HO HAYSTACK OBSERV C1 CALTECH,JET PROP LAB,PASADENA,CA 91109. 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 0-937707-84-8 J9 ASTR SOC P PY 1994 VL 65 BP 172 EP 175 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD73Y UT WOS:A1994BD73Y00025 ER PT B AU Mushotzky, R AF Mushotzky, R BE Durret, F Mazure, A TranThanhVan, J TI X-ray spectra of clusters of galaxies SO CLUSTERS OF GALAXIES SE MORIOND ASTROPHYSICS MEETINGS LA English DT Proceedings Paper CT Astrophysics Session of the XXIXth Rencontre de Moriond - Clusters of Galaxies CY MAR 12-19, 1994 CL MERIBEL, FRANCE C1 GODDARD SPACE FLIGHT CTR,LAB HIGH ENERGY ASTROPHYS,GREENBELT,MD 20771. NR 0 TC 17 Z9 17 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-167-6 J9 MORIOND AST PY 1994 BP 167 EP 182 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE54E UT WOS:A1994BE54E00027 ER PT J AU Irwin, C Phipps, M AF Irwin, C Phipps, M BE McAvoy, LH Stringer, LA Ewert, A TI The great outdoors and beyond: Common threads in leadership training on land, in the air, and in space SO COALITION FOR EDUCATION IN THE OUTDOORS, SECOND RESEARCH SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT 2nd Research Symposium of Coalition-for-the-Education-in-the-Outdoors CY JAN 14-16, 1994 CL BRADFORD WOODS, IN SP Coalit Educ Outdoors DE leadership styles; group dynamics; expedition; space analog; safety AB The purpose of this study was to investigate a systematic approach to learning leadership in the outdoors. A single-case design was used with an expert from a related field taking part in an expedition using the Experiential Leadership Education approach to learn the ''people'' skills of leadership. C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COALITION EDUCATION OUTDOORS PI CORTLAND PA DEPT RECREATION & LEISURE STUD SUNY COLL CORTLAND, CORTLAND, NY 13045 PY 1994 BP 43 EP 52 PG 10 WC Education & Educational Research SC Education & Educational Research GA BH46C UT WOS:A1994BH46C00007 ER PT B AU ROBERTSON, JB BATSON, VM HARRIS, RL HUNT, PJ AF ROBERTSON, JB BATSON, VM HARRIS, RL HUNT, PJ BE Hopper, DG TI FLAT-PANEL DISPLAY FOR FLIGHT-SIMULATOR EXPERIMENT SO COCKPIT DISPLAYS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Cockpit Displays CY APR 07-08, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. 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 0-8194-1523-5 J9 P SOC PHOTO-OPT INS PY 1994 VL 2219 BP 140 EP 145 DI 10.1117/12.177775 PG 6 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BA83T UT WOS:A1994BA83T00016 ER PT B AU Bennett, CL AF Bennett, CL BE Montmerle, T Lada, CJ Mirabel, IF TranThanhVan, J TI COBE views the cold universe SO COLD UNIVERSE SE MORIOND ASTROPHYSICS MEETINGS LA English DT Proceedings Paper CT Astrophysics Session of the XXVIIIth Rencontre de Moriond - The Cold Universe CY MAR 13-20, 1993 CL LES ARCS, FRANCE C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-150-1 J9 MORIOND AST PY 1994 BP 23 EP 32 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE54F UT WOS:A1994BE54F00003 ER PT B AU Jones, AP Tielens, AGGM AF Jones, AP Tielens, AGGM BE Montmerle, T Lada, CJ Mirabel, IF TranThanhVan, J TI Interstellar dust - Physical processes SO COLD UNIVERSE SE MORIOND ASTROPHYSICS MEETINGS LA English DT Proceedings Paper CT Astrophysics Session of the XXVIIIth Rencontre de Moriond - The Cold Universe CY MAR 13-20, 1993 CL LES ARCS, FRANCE C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. OI Jones, Anthony/0000-0003-0577-6425 NR 0 TC 14 Z9 14 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-150-1 J9 MORIOND AST PY 1994 BP 35 EP 44 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE54F UT WOS:A1994BE54F00004 ER PT B AU BUSHNELL, DM AF BUSHNELL, DM BE Buckmaster, J Jackson, TL Kumar, A TI MIXING AND COMBUSTION ISSUES IN HYPERSONIC AIR-BREATHING PROPULSION SO COMBUSTION IN HIGH-SPEED FLOWS SE ICASE/LATC INTERDISCIPLINARY SERIES IN SCIENCE AND ENGINEERING LA English DT Proceedings Paper CT Workshop on Combustion CY OCT 12-14, 1992 CL HAMPTON, VA SP INST COMP APPLICAT SCI & ENGN, NASA, LANGLEY RES CTR C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 2 Z9 2 U1 0 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2806-X J9 ICASE LARC IN SCI EN PY 1994 VL 1 BP 3 EP 16 PG 14 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA BB28Q UT WOS:A1994BB28Q00001 ER PT B AU ANDERSON, GY AF ANDERSON, GY BE Buckmaster, J Jackson, TL Kumar, A TI HYPERSONIC COMBUSTION - STATUS AND DIRECTIONS SO COMBUSTION IN HIGH-SPEED FLOWS SE ICASE/LATC INTERDISCIPLINARY SERIES IN SCIENCE AND ENGINEERING LA English DT Proceedings Paper CT Workshop on Combustion CY OCT 12-14, 1992 CL HAMPTON, VA SP INST COMP APPLICAT SCI & ENGN, NASA, LANGLEY RES CTR C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 1 Z9 1 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2806-X J9 ICASE LARC IN SCI EN PY 1994 VL 1 BP 19 EP 51 PG 33 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA BB28Q UT WOS:A1994BB28Q00002 ER PT B AU DRUMMOND, JP GIVI, P AF DRUMMOND, JP GIVI, P BE Buckmaster, J Jackson, TL Kumar, A TI SUPPRESSION AND ENHANCEMENT OF MIXING IN HIGH-SPEED REACTING FLOW-FIELDS SO COMBUSTION IN HIGH-SPEED FLOWS SE ICASE/LATC INTERDISCIPLINARY SERIES IN SCIENCE AND ENGINEERING LA English DT Proceedings Paper CT Workshop on Combustion CY OCT 12-14, 1992 CL HAMPTON, VA SP INST COMP APPLICAT SCI & ENGN, NASA, LANGLEY RES CTR C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 5 Z9 5 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2806-X J9 ICASE LARC IN SCI EN PY 1994 VL 1 BP 191 EP 229 PG 39 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA BB28Q UT WOS:A1994BB28Q00007 ER PT B AU QUIRK, JJ AF QUIRK, JJ BE Buckmaster, J Jackson, TL Kumar, A TI GODUNOV-TYPE SCHEMES APPLIED TO DETONATION FLOWS SO COMBUSTION IN HIGH-SPEED FLOWS SE ICASE/LATC INTERDISCIPLINARY SERIES IN SCIENCE AND ENGINEERING LA English DT Proceedings Paper CT Workshop on Combustion CY OCT 12-14, 1992 CL HAMPTON, VA SP INST COMP APPLICAT SCI & ENGN, NASA, LANGLEY RES CTR C1 NASA,LANGLEY RES CTR,INST COMP APPLICAT SCI & ENGN,HAMPTON,VA 23681. NR 0 TC 32 Z9 33 U1 0 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2806-X J9 ICASE LARC IN SCI EN PY 1994 VL 1 BP 575 EP 596 PG 22 WC Thermodynamics; Energy & Fuels SC Thermodynamics; Energy & Fuels GA BB28Q UT WOS:A1994BB28Q00021 ER PT J AU BUCKMASTER, J JACKSON, TL AF BUCKMASTER, J JACKSON, TL TI THE EFFECTS OF RADIATION ON THE THERMAL-DIFFUSIVE STABILITY BOUNDARIES OF PREMIXED FLAMES SO COMBUSTION SCIENCE AND TECHNOLOGY LA English DT Article DE DEFLAGRATIONS; RADIATION; STABILITY ID LAMINAR FLAMES; PROPAGATION AB We examine the stability of premixed flames in mixtures containing significant amounts of fine inert dust whose sole impact is upon the radiative transport. By using well-established modeling strategies together with a simple radiation model which preserves much of the essential physics, it is possible to explore to what extent radiative transport displaces the classical non-hydrodynamical stability boundaries of the plane deflagration. Analysis is possible for arbitrary values of both the Planck length and the Boltzman number. It is shown that the pulsating/traveling-wave instability is strongly enhanced by the presence of radiation, and can be present even if Le < 1. On the other hand, radiation tends to suppress the cellular instability normally associated with values of Le less than 1. The latter is consistent with preliminary experimental observations of Abbud-Madrid and Ronney. C1 NASA,LANGLEY RES CTR,ICASE,HAMPTON,VA 23681. RP BUCKMASTER, J (reprint author), HONG KONG UNIV SCI & TECHNOL,DEPT MATH,HONG KONG,HONG KONG. NR 18 TC 14 Z9 14 U1 2 U2 4 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0010-2202 J9 COMBUST SCI TECHNOL JI Combust. Sci. Technol. PY 1994 VL 103 IS 1-6 BP 299 EP 313 DI 10.1080/00102209408907700 PG 15 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Energy & Fuels; Engineering GA RD926 UT WOS:A1994RD92600016 ER PT J AU HEGDE, U ZHOU, L BAHADORI, MY AF HEGDE, U ZHOU, L BAHADORI, MY TI THE TRANSITION TO TURBULENCE OF MICROGRAVITY GAS-JET DIFFUSION FLAMES SO COMBUSTION SCIENCE AND TECHNOLOGY LA English DT Article DE MICROGRAVITY; DIFFUSION FLAME; TRANSITION TO TURBULENCE; SHEAR LAYER INSTABILITY AB This paper discusses results obtained in a study of the transition to turbulence of gas jet diffusion flames in microgravity. The experiments were conducted at the 2.2-second Drop Tower of the NASA Lewis Research Center, Propane flames burning in quiescent air at atmospheric pressure were investigated. Significant differences have been observed between the transition processes of gas jet diffusion flames in microgravity and normal gravity These include the appearance of large scale structures in microgravity which are manifested at the flame base and are convected downstream. These structures appear intermittently at first, and, then, as Reynolds number is increased, a continuous train of structures is observed along the flame front. The experimental observations are explained in terms of flow transition and instability of the shear layer associated with the injection of the jet how into quiescent surroundings. C1 ANALEX CORP,BROOKPARK,OH 44142. SCI APPLICAT INT CORP,TORRANCE,CA 90501. RP HEGDE, U (reprint author), NYMA INC,NASA,LEWIS RES CTR GRP,BROOKPARK,OH 44142, USA. NR 29 TC 15 Z9 16 U1 1 U2 4 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0010-2202 J9 COMBUST SCI TECHNOL JI Combust. Sci. Technol. PY 1994 VL 102 IS 1-6 BP 95 EP 113 PG 19 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Energy & Fuels; Engineering GA RA800 UT WOS:A1994RA80000005 ER PT J AU MACARAEG, MG JACKSON, TL HUSSAINI, MY AF MACARAEG, MG JACKSON, TL HUSSAINI, MY TI IGNITION DYNAMICS OF A LAMINAR DIFFUSION FLAME IN THE FIELD OF A VORTEX EMBEDDED IN A SHEAR-FLOW SO COMBUSTION SCIENCE AND TECHNOLOGY LA English DT Article DE IGNITION; SHEAR; COMPRESSIBILITY ID STREAMWISE VORTICES; MIXING LAYER; INSTABILITY; EVOLUTION AB The role of streamwise-spanwise vorticity interactions that occur in turbulent shear flows on flame/vortex interactions is examined by means of asymptotic analysis and numerical simulation in the limit of small Mach number. An idealized model is employed to describe the interaction process. The model consists of a one-step, irreversible Arrhenius reaction between initially unmixed species occupying adjacent half-planes which are then allowed to mix and react in the presence of a streamwise vortex embedded in a shear flow. It is found that the interaction of the streamwise vortex with shear gives rise to small-scale velocity oscillations which increase in magnitude with shear strength. These oscillations give rise to regions of strong temperature gradients via viscous heating, which can lead to multiple ignition points and substantially decrease ignition times. The evolution in time of the temperature and mass-fraction fields is followed, and emphasis is placed on the ignition time and structure as a function of vortex and shear strength. RP MACARAEG, MG (reprint author), NASA, LANGLEY RES CTR, INST COMP APPLICAT SCI & ENGN, HAMPTON, VA 23681 USA. NR 20 TC 1 Z9 1 U1 0 U2 2 PU TAYLOR & FRANCIS INC PI PHILADELPHIA PA 530 WALNUT STREET, STE 850, PHILADELPHIA, PA 19106 USA SN 0010-2202 EI 1563-521X J9 COMBUST SCI TECHNOL JI Combust. Sci. Technol. PY 1994 VL 102 IS 1-6 BP 231 EP 253 DI 10.1080/00102209408935478 PG 23 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Energy & Fuels; Engineering GA RA800 UT WOS:A1994RA80000012 ER PT J AU FERKUL, PV TIEN, JS AF FERKUL, PV TIEN, JS TI A MODEL OF LOW-SPEED CONCURRENT FLOW FLAME SPREAD OVER A THIN FUEL SO COMBUSTION SCIENCE AND TECHNOLOGY LA English DT Article AB A numerical model is developed to examine steady, laminar flame spread and extinction over a thin solid fuel in low-speed concurrent flow. The model incorporates an elliptic treatment of the upstream flame stabilization zone near the fuel burnout point, and a parabolic treatment of the downstream flame, which has a higher flow Reynolds number. This provides a more precise fluid-mechanical description of the flame than using parabolic equations throughout, and is the first time such an approach has been used in concurrent flame spread modeling. The parabolic and elliptic regions are coupled smoothly by matching boundary conditions. The solid phase consists of an energy equation with surface radiative loss and a surface pyrolysis relation. Calculations (with the flame spread rate being an eigenvalue) are performed for forced flow without gravitational influences in a range of velocities which are lower than those induced in a normal gravity buoyant environment. Steady spread with constant flame and pyrolysis lengths is found possible for thin fuels and this facilitates the adoption of a moving coordinate system attached to the flame. Both quenching and blowoff extinction are observed. As flow velocity or oxygen percentage is reduced, the flame spread rate, the pyrolysis length, and the flame length all decrease. The flame standoff distance from the solid and the reaction zone thickness, however, first increase with decreasing flow velocity, but eventually decrease very near the quenching extinction limit. The short, weak flames observed at low flow velocities and oxygen levels are consistent with available experimental data. The maximum flame temperature decreases slowly at first as flow velocity is reduced, then falls more steeply close to the extinction limit. At low velocities, surface radiative loss becomes a significant fraction of the total combustion reactions' heat release. In addition, the shorter flame length causes an increase in the fraction of conduction downstream (into the gas phase) compared to conduction to the fuel. These heat losses lead to lower flame temperatures, and ultimately, a quenching extinction. This extinction mechanism differs from that of blowoff, where the flame is unable to be stabilized due to the high flow velocity. C1 CASE WESTERN RESERVE UNIV,DEPT AEROSP & MECH ENGN,CLEVELAND,OH 44106. RP FERKUL, PV (reprint author), NASA,LEWIS RES CTR,NATL RES COUNCIL,CLEVELAND,OH 44135, USA. NR 25 TC 32 Z9 34 U1 0 U2 5 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0010-2202 J9 COMBUST SCI TECHNOL JI Combust. Sci. Technol. PY 1994 VL 99 IS 4-6 BP 345 EP 370 DI 10.1080/00102209408935440 PG 26 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Energy & Fuels; Engineering GA PU053 UT WOS:A1994PU05300007 ER PT J AU YANG, V LIN, NN AF YANG, V LIN, NN TI VAPORIZATION OF LIQUID-OXYGEN (LOX) DROPLETS IN SUPERCRITICAL HYDROGEN ENVIRONMENTS SO COMBUSTION SCIENCE AND TECHNOLOGY LA English DT Article ID PHASE-EQUILIBRIUM CALCULATIONS; MODIFIED SOAVE EQUATION; THERMAL-CONDUCTIVITY; TRANSPORT-PROPERTIES; PREDICTION; COMBUSTION; MIXTURES; VISCOSITY; SYSTEMS; FLUIDS AB A comprehensive theoretical analysis has been developed to study vaporization of liquid oxygen (LOX) droplets in hydrogen over a wide range of pressure. The formulation accommodates complete sets of conservation equations for both gas and liquid phases, and accounts for variable properties, thermodynamic non-idealities, and vapor-liquid phase equilibria. The model is capable of treating the entire history of a vaporizing LOX droplet, including the thermodynamic phase transition through the critical mixing point. Various distinct high-pressure effects on the droplet behavior were investigated in depth. In particular, a parametric study of the droplet lifetime as a function of the ambient pressure, temperature, and initial droplet diameter has been conducted. The droplet lifetime exhibits a strong pressure dependence and can be correlated well with the square of the initial diameter. C1 NASA,LEWIS RES CTR,SVERDRUP TECHNOL INC,BROOKPARK,OH 44142. RP YANG, V (reprint author), PENN STATE UNIV,DEPT MECH ENGN,UNIVERSITY PK,PA 16802, USA. NR 31 TC 44 Z9 46 U1 0 U2 8 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0010-2202 J9 COMBUST SCI TECHNOL JI Combust. Sci. Technol. PY 1994 VL 97 IS 4-6 BP 247 EP 270 DI 10.1080/00102209408935380 PG 24 WC Thermodynamics; Energy & Fuels; Engineering, Multidisciplinary; Engineering, Chemical SC Thermodynamics; Energy & Fuels; Engineering GA PJ442 UT WOS:A1994PJ44200001 ER PT J AU REDNER, RA GEHRINGER, K AF REDNER, RA GEHRINGER, K TI FUNCTION ESTIMATION USING PARTITIONS OF UNITY SO COMMUNICATIONS IN STATISTICS-THEORY AND METHODS LA English DT Article DE FUNCTION ESTIMATION; METRIC SPACES; NONPARAMETRIC DENSITY ESTIMATION; PARTITIONS OF UNITY; SPLINES AB We present a new nonparametric function estimate based on partitions of unity. These density estimates are applicable not only to subsets of R(n) but to arbitrary metric spaces. They can be used for estimating conditional expectations, and for constructing both nonparametric energy density and nonparametric probability density estimates. We show that under reasonable conditions that the nonparametric density estimates converge in mean square error and under slightly more restrictive conditions that they converge in integrated mean square error. A computer graphics application is presented. C1 UNIV TULSA,TULSA,OK 74104. JET PROP LAB,PASADENA,CA 91109. NR 14 TC 6 Z9 6 U1 0 U2 0 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0361-0926 J9 COMMUN STAT THEORY JI Commun. Stat.-Theory Methods PY 1994 VL 23 IS 7 BP 2059 EP 2078 DI 10.1080/03610929408831371 PG 20 WC Statistics & Probability SC Mathematics GA NP592 UT WOS:A1994NP59200012 ER PT J AU FEIGENBAUM, EA FRIEDLAND, PE JOHNSON, BB NII, HP SCHORR, H SCHROBE, H ENGELMORE, RS AF FEIGENBAUM, EA FRIEDLAND, PE JOHNSON, BB NII, HP SCHORR, H SCHROBE, H ENGELMORE, RS TI KNOWLEDGE-BASED SYSTEMS IN JAPAN SO COMMUNICATIONS OF THE ACM LA English DT Article C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. ANDERSEN CONSULTING,CHICAGO,IL. USC,ISI,LOS ANGELES,CA. MIT,CAMBRIDGE,MA 02139. RP FEIGENBAUM, EA (reprint author), STANFORD UNIV,STANFORD,CA 94305, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASSOC COMPUTING MACHINERY PI NEW YORK PA 1515 BROADWAY, NEW YORK, NY 10036 SN 0001-0782 J9 COMMUN ACM JI Commun. ACM PD JAN PY 1994 VL 37 IS 1 BP 17 EP 19 PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA MN720 UT WOS:A1994MN72000010 ER PT J AU NAGENDRA, S GURDAL, Z HAFTKA, RT STARNES, JH AF NAGENDRA, S GURDAL, Z HAFTKA, RT STARNES, JH TI BUCKLING AND FAILURE CHARACTERISTICS OF COMPRESSION-LOADED STIFFENED COMPOSITE PANELS WITH A HOLE SO COMPOSITE STRUCTURES LA English DT Article ID GRAPHITE-EPOXY PANELS; BEHAVIOR AB An experimental and analytical study was carried out to investigate the buckling and failure characteristics of stiffened compression-loaded panels with holes, and to assess the validity of analytical models used for the design of such panels. Graphite-epoxy panels with four equally spaced blade stiffeners were fabricated with a laminate stacking sequence optimally designed for stiffened panels without holes. Panels with different hole sizes and panels without holes were tested. Failure of all panels initiated at or near the stiffeners, in regions with severe local bending gradients. Finite element analysis using a quarter-panel model with boundary conditions to simulate the experiment was used to predict the prebuckling and buckling behavior. Analytical results correlate well with experimental results. C1 VIRGINIA POLYTECH INST & STATE UNIV,DEPT ENGN SCI & MECH,BLACKSBURG,VA 24061. NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 24 TC 15 Z9 15 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0263-8223 J9 COMPOS STRUCT JI Compos. Struct. PY 1994 VL 28 IS 1 BP 1 EP 17 DI 10.1016/0263-8223(94)90002-7 PG 17 WC Materials Science, Composites SC Materials Science GA NB023 UT WOS:A1994NB02300001 ER PT J AU LAI, SHY AF LAI, SHY TI FINITE-ELEMENT ANALYSIS OF CURVED THIN-WALLED LAMINATED CHANNEL STRUCTURES SO COMPOSITE STRUCTURES LA English DT Article AB The objective of this paper is to develop an analytical procedure for dynamic characterization of thin-walled rounded channel beams made from laminated composites. To develop the analytical procedure, the thin wall beam theory for isotropic materials was extended for the laminated case. It is shown that the physical properties needed for modeling are the weighted average of the laminae properties. The comers of the c-channel beam are rounded for minimizing stress concentration and for ease of manufacturing. The cross-sectional properties of the rounded shape are calculated and reported. Once the beam model for the laminated composite beam is developed, it is used to set up dynamic equations for vibration analysis with combined bending and torsion. The variational formulation and the finite element procedure augmented by appropriate shape functions and boundary conditions leads us to the frequency equation which can be solved for system dynamics. Numerical examples are presented to validate the theory and the computer program. The results show that the theory is accurate and efficient. The program developed here can be used as the tool for the design of laminated channel beam structures of complex geometry. RP LAI, SHY (reprint author), N CAROLINA AGR & TECH STATE UNIV,NASA,CTR AEROSP RES,GREENSBORO,NC 27411, USA. NR 15 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0263-8223 J9 COMPOS STRUCT JI Compos. Struct. PY 1994 VL 27 IS 3 BP 295 EP 315 DI 10.1016/0263-8223(94)90090-6 PG 21 WC Materials Science, Composites SC Materials Science GA MU968 UT WOS:A1994MU96800008 ER PT J AU ABOUDI, J ARNOLD, SM PINDERA, MJ AF ABOUDI, J ARNOLD, SM PINDERA, MJ TI RESPONSE OF FUNCTIONALLY GRADED COMPOSITES TO THERMAL-GRADIENTS SO COMPOSITES ENGINEERING LA English DT Article; Proceedings Paper CT Functionally Graded, Advanced Composites Materials Symposium CY JUN 06-09, 1993 CL UNIV VIRGINIA, CHARLOTTESVILLE, VA SP SES, ASME, ASCE HO UNIV VIRGINIA AB A new micromechanical theory is presented for the response of functionally graded metal-matrix composites subjected to thermal gradients. In contrast to existing micromechanical theories that utilize standard homogenization schemes in the course of calculating microscopic and macroscopic field quantities, in the present approach the actual microstructural details are explicitly coupled with the macrostructure of the composite. The theory is particularly well-suited for predicting the response of thin-walled metal-matrix composites with a finite number of large-diameter fibers in the thickness direction subjected to thermal gradients. Standard homogenization techniques which decouple micromechanical and macromechanical analyses may not produce reliable results for such configurations. Examples presented illustrate the usefulness of the outlined approach in generating favorable stress distributions in the presence of thermal gradients by appropriately grading the internal microstructural details of the composite. C1 NASA,LEWIS RES CTR,FATIGUE & FRACTURE BRANCH,CLEVELAND,OH 44135. UNIV VIRGINIA,DEPT CIVIL ENGN & APPL MECH,CHARLOTTESVILLE,VA 22903. RP ABOUDI, J (reprint author), TEL AVIV UNIV,FAC ENGN,IL-69978 TEL AVIV,ISRAEL. NR 11 TC 61 Z9 61 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 1 BP 1 EP 18 DI 10.1016/0961-9526(94)90003-5 PG 18 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA MZ705 UT WOS:A1994MZ70500002 ER PT J AU RABZAK, C SARAVANOS, DA CHAMIS, CC AF RABZAK, C SARAVANOS, DA CHAMIS, CC TI OPTIMAL SYNTHESIS OF HOT COMPOSITE LAMINATES WITH INTERPHASE LAYERS SO COMPOSITES ENGINEERING LA English DT Article; Proceedings Paper CT Functionally Graded, Advanced Composites Materials Symposium CY JUN 06-09, 1993 CL UNIV VIRGINIA, CHARLOTTESVILLE, VA SP SES, ASME, ASCE HO UNIV VIRGINIA ID DESIGN AB A method for the optimal grading of a single interphase layer in metal-matrix composite laminates for the minimization of residual stresses is described. The capability to simultaneously ailor some fabrication parameters is also incorporated. Applications for unidirectional, cross-ply and quasi-isotropic graphite/copper laminates are investigated to assess the potential of the interphase layer in reducing matrix residual stresses in various laminate configurations. Simultaneous optimization of interphase and fabrication characteristics appears to be more effective in decreasing residual stresses. The results also indicate that the interphase layer is more effective in lowering residual stresses in unidirectional composites and selectively within individual plies of a laminate. Embedded interphase layers in all the plies did not produce a significant global reduction in residual stresses. C1 NASA,LEWIS RES CTR,OHIO AEROSP INST,CLEVELAND,OH 44135. RP RABZAK, C (reprint author), SVERDRUP TECHNOL,2001 AEROSP PKWY,BROOKPARK,OH 44142, USA. NR 15 TC 2 Z9 2 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 1 BP 95 EP 105 DI 10.1016/0961-9526(94)90011-6 PG 11 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA MZ705 UT WOS:A1994MZ70500008 ER PT J AU PINDERA, MJ WILLIAMS, TO ARNOLD, SM AF PINDERA, MJ WILLIAMS, TO ARNOLD, SM TI THERMOPLASTIC RESPONSE OF METAL-MATRIX COMPOSITES WITH HOMOGENIZED AND FUNCTIONALLY GRADED INTERFACES SO COMPOSITES ENGINEERING LA English DT Article; Proceedings Paper CT Functionally Graded, Advanced Composites Materials Symposium CY JUN 06-09, 1993 CL UNIV VIRGINIA, CHARLOTTESVILLE, VA SP SES, ASME, ASCE HO UNIV VIRGINIA AB A recently developed micromechanical model for axisymmetric thermoplastic response of unidirectional metal-matrix composites is further extended to investigate the potential of composite interfaces in reducing thermally induced residual stresses. The model combines elements of a multiple concentric cylinder assemblage that is used in solving the thermoplastic boundary-value problem of a unidirectional composite under axisymmetric thermal loading, and the three-dimensional version of the method of cells newly incorporated into the global solution strategy. The method of cells is employed to determine the thermoplastic response of the interfacial region that consists of varying proportions of two distinct phases. The homogenized properties of the interfacial region determined from the method of cells are then used as input to the global boundary-value problem of a composite cylinder consisting of a fiber, interfacial region with uniformly distributed or functionally graded properties, and the surrounding matrix. The results presented provide insight into designing/engineering homogenized and functionally graded interfaces in advanced metal-matrix composites. C1 NASA,LEWIS RES CTR,FATIGUE & FRACTURE BRANCH,CLEVELAND,OH 44135. RP PINDERA, MJ (reprint author), UNIV VIRGINIA,DEPT CIVIL ENGN & APPL MECH,CHARLOTTESVILLE,VA 22903, USA. NR 14 TC 18 Z9 18 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 1 BP 129 EP 145 DI 10.1016/0961-9526(94)90014-0 PG 17 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA MZ705 UT WOS:A1994MZ70500011 ER PT J AU XIAO, XR HIEL, CC CARDON, AH AF XIAO, XR HIEL, CC CARDON, AH TI CHARACTERIZATION AND MODELING OF NONLINEAR VISCOELASTIC RESPONSE OF PEEK RESIN AND PEEK COMPOSITES SO COMPOSITES ENGINEERING LA English DT Article ID FIBER COMPOSITES; BEHAVIOR AB The viscoelastic properties of PEEK resin and unidirectional PEEK composite APC-2 were characterized by an accelerated testing procedure based on the time-temperature and time-stress superposition principles. The results obtained by creep and recovery tests are presented, and the constitutive modeling of the nonlinear viscoelastic response is discussed. The stress-dependent viscoelastic responses of the composite were modeled by a special case of Schapery's nonlinear viscoelastic equation with a kernel of the general power law. The relations for the temperature-time scale shift factors and stress-time scale factors are given. With the equations and parameters presented, the linear and nonlinear viscoelastic behaviors of APC-2 composite laminate from ambient temperature up to the glass transition temperature can be described analytically. Comparisons were made on the nonlinear properties of the 15 degrees off-axis laminate, transverse laminate and pure resin. The results agree with the theory that the matrix octahedral shear stress is the main variable determining the nonlinearity of polymers and polymer-based composites. C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. FREE UNIV BRUSSELS,DEPT APPL CONTINUUM MECH,B-1050 BRUSSELS,BELGIUM. RP XIAO, XR (reprint author), CONCORDIA UNIV,DEPT MECH ENGN,1455 MAISONNEUVE BLVD W,MONTREAL H3G 1M8,PQ,CANADA. RI Xiao, Xinran/M-4275-2014 NR 29 TC 18 Z9 18 U1 0 U2 14 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 7 BP 681 EP 702 DI 10.1016/0961-9526(94)90109-0 PG 22 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA PE862 UT WOS:A1994PE86200001 ER PT J AU REDDY, ES BINIENDA, WK AF REDDY, ES BINIENDA, WK TI PREDICTION OF CRACK INITIATION IN UNIDIRECTIONAL COMPOSITE BEAMS SUBJECT TO 4-POINT BENDING SO COMPOSITES ENGINEERING LA English DT Article AB The local stress field near a support is analyzed as a contact stress problem in an infinite half plane. The results are utilized to explain the influence of focal stresses on crack initiation in a four-point bending test on unidirectional graphite/epoxy composite beams. Also, numerical simulations are carried out using the finite element method. Crack-initiation phenomena at the bottom surface of the beam are explained with the aid of the stress distribution and strain-energy release rates. The initiation location for various fiber angles is predicted and compared with the experimental results reported in the literature. The existence of two distinct ranges of fiber angles for which the cracking phenomena is different is verified. C1 UNIV AKRON,DEPT CIVIL ENGN,AKRON,OH 44325. RP REDDY, ES (reprint author), NASA,SVERDRUP TECHNOL INC,LEWIS RES CTR GRP,BROOKPARK,OH 44142, USA. NR 15 TC 2 Z9 2 U1 2 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 7 BP 703 EP 714 DI 10.1016/0961-9526(94)90110-4 PG 12 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA PE862 UT WOS:A1994PE86200002 ER PT J AU LEVINE, SR DUFFY, S VARY, A NATHAL, MV MINER, RV ARNOLD, SM CASTELLI, MG HOPKINS, DA MEADOR, MA AF LEVINE, SR DUFFY, S VARY, A NATHAL, MV MINER, RV ARNOLD, SM CASTELLI, MG HOPKINS, DA MEADOR, MA TI COMPOSITES RESEARCH AT NASA LEWIS RESEARCH-CENTER SO COMPOSITES ENGINEERING LA English DT Article ID MACROSCOPIC RELIABILITY MODEL AB Composites research at NASA Lewis is focused on their applications in aircraft propulsion, space propulsion and space power, with the first being predominant. Research on polymer-, metal- and ceramic-matrix composites is being carried out from an integrated materials and structures viewpoint. This paper outlines some of the topics being pursued from the standpoint of key technical issues, current status and future directions. RP LEVINE, SR (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 59 TC 2 Z9 3 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 8 BP 787 EP 810 PG 24 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA PJ448 UT WOS:A1994PJ44800001 ER PT J AU ARNOLD, SM CASTELLI, MG AF ARNOLD, SM CASTELLI, MG TI CONTINUUM-BASED THEORETICAL AND EXPERIMENTAL STUDIES IN DEFORMATION AND DAMAGE OF MMCS AT NASA-LEWIS - PROGRESS AND TRENDS SO COMPOSITES ENGINEERING LA English DT Article ID SIC/TI-15-3 COMPOSITE; MATRIX COMPOSITES; FATIGUE BEHAVIOR; CREEP; PLASTICITY; MECHANISMS AB To fully realize the benefits offered by MMCs, experimentally verified, computationally efficient design and life-prediction methods must be developed for the advanced multiphased materials of interest in advanced engine and propulsion systems. To accomplish this, two parallel approaches, one starting at the constituent (or microscale) and the other at the composite (or macroscale), are being pursued in the areas of deformation and damage/life of MMCs at LeRC. This paper provides an annotative overview and technical description of the various continuum-based theoretical and experimental studies being conducted at LeRC. Some of the topics covered include: test-method development, isotropic and anisotropic viscoplastic models, anisotropic continuum damage mechanics (CDM) models for creep and fatigue, two new micro/macro homogenization techniques and a combined deformation and damage algorithm. The paper concludes with a discussion of issues and future directions. C1 NYMA INC,DIV ENGN SERV,BROOKPARK,OH 44142. RP ARNOLD, SM (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 71 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 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 8 BP 811 EP 828 PG 18 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA PJ448 UT WOS:A1994PJ44800002 ER PT J AU CASTELLI, MG AF CASTELLI, MG TI THERMOMECHANICAL FATIGUE DAMAGE FAILURE MECHANISMS IN SCS-6 TIMETAL-21S-[0/90]S COMPOSITE SO COMPOSITES ENGINEERING LA English DT Article ID BEHAVIOR AB The thermomechanical fatigue (TMF) deformation, damage and life behaviors of SCS-6/Timetal 21S [0/90]s were investigated under zero-tension conditions. In-phase (IP) and out-of-phase (OP) loadings were investigated with a temperature cycle from 150 to 650-degrees-C. An advanced TMF test technique was used to mechanically quantify damage progression. The technique incorporated explicit measurements of the macroscopic (i) isothermal static moduli at the temperature extremes of the TMF cycle, and (ii) coefficient of thermal expansion (CTE) as functions of the TMF cycles. The importance of thermal property degradation and its relevance to accurate post-test data analysis and interpretation is briefly addressed. Extensive fractography and metallography were conducted on specimens from failed and interrupted tests to characterize the extent of damage at the microstructure level. Fatigue-life results indicated trends analogous to those established for similar unidirectional [0] reinforced titanium-matrix composite systems. High-stress IP and mid- to low-stress OP loading conditions were life-limiting in comparison to maximum temperature isothermal conditions. Dominant damage mechanisms changed with cycle type. Damage resulting from [P TMF conditions produced measurable decreases in static moduli but only minimal changes in the CTE. Metallography on interrupted and failed specimens revealed extensive [0] fiber cracking with sparse matrix damage. No surface-initiated matrix cracks were present. Comparable OP TMF conditions initiated environment-enhanced surface cracking and matrix cracking initiated at [90] fiber/matrix (F/M) interfaces. Notable static moduli and CTE degradations were measured. Fractography and metallography revealed that the transverse cracks originating from the surface and [90] F/M interfaces tended to converge and coalesce at the [0] fibers. RP CASTELLI, MG (reprint author), NYMA INC,NASA,LEWIS RES CTR GRP,BROOKPARK,OH 44142, USA. NR 27 TC 3 Z9 3 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 9 BP 931 EP 946 DI 10.1016/0961-9526(94)90036-1 PG 16 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA PK247 UT WOS:A1994PK24700004 ER PT J AU BINIENDA, WK HONG, AP ROBERTS, GD AF BINIENDA, WK HONG, AP ROBERTS, GD TI INFLUENCE OF MATERIAL PARAMETERS ON STRAIN-ENERGY RELEASE RATES FOR CROSS-PLY LAMINATES WITH A PREEXISTING TRANSVERSE CRACK SO COMPOSITES ENGINEERING LA English DT Article AB The formation of intraply cracks in continuous fiber reinforced composite structures can be tolerated if critical mechanical properties are not reduced below allowable design limits. However, the presence of intraply cracks can lead to the formation of other, more harmful, types of damage. The onset of this late stage damage determines the useful service life of the composite structure. In this paper, the damage progression in the vicinity of a pre-existing transverse crack is investigated for [0/90(3))(s) and [0(2)/90(2)](s) cross-ply laminates. The types of damage considered are secondary crack formation, 0/90 interface delamination, split cracks in 0 degrees plies, and delamination induced by split and transverse cracks. Strain energy release rates (SERR) associated with the onset and propagation of these types of damage are calculated using three dimensional finite element analysis (FEA) of a representative volume containing a pre-existing transverse crack. The implications of this analysis are considered for several polymer matrix and metal matrix composites. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP BINIENDA, WK (reprint author), UNIV AKRON,DEPT CIVIL ENGN,AKRON,OH 44325, USA. NR 9 TC 2 Z9 2 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 12 BP 1197 EP 1210 DI 10.1016/0961-9526(95)91390-3 PG 14 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA QG092 UT WOS:A1994QG09200002 ER PT J AU PINDERA, MJ ARNOLD, SM ABOUDI, J HUI, D AF PINDERA, MJ ARNOLD, SM ABOUDI, J HUI, D TI USE OF COMPOSITES IN FUNCTIONALLY GRADED MATERIALS - INVITED PAPERS - FUNCTIONALLY GRADED, ADVANCED COMPOSITES MATERIALS SYMPOSIUM UNIVERSITY-OF-VIRGINIA, CHARLOTTESVILLE, USA - 6-9 JUNE 1993 - FOREWORD SO COMPOSITES ENGINEERING LA English DT Editorial Material C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. TEL AVIV UNIV,IL-69978 TEL AVIV,ISRAEL. UNIV NEW ORLEANS,NEW ORLEANS,LA 70148. RP PINDERA, MJ (reprint author), UNIV VIRGINIA,CHARLOTTESVILLE,VA 22903, USA. NR 0 TC 8 Z9 8 U1 1 U2 5 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0961-9526 J9 COMPOS ENG JI Compos. Eng. PY 1994 VL 4 IS 1 BP R7 EP R9 DI 10.1016/0961-9526(94)90002-7 PG 3 WC Engineering, Multidisciplinary; Materials Science, Composites SC Engineering; Materials Science GA MZ705 UT WOS:A1994MZ70500001 ER PT J AU DICARLO, JA AF DICARLO, JA TI CREEP LIMITATIONS OF CURRENT POLYCRYSTALLINE CERAMIC FIBERS SO COMPOSITES SCIENCE AND TECHNOLOGY LA English DT Article; Proceedings Paper CT International Workshop on Advances in Inorganic Fibre Technology CY AUG 13-14, 1992 CL MELBOURNE, AUSTRALIA DE FIBERS; CREEP; STRESS RELAXATION; SILICON CARBIDE; COMPOSITES AB The objective of this paper is to present an overview of the issues, property status, and potential for use of creep-prone polycrystalline ceramic fibers in thermostructural ceramic composites. Issues arise because the fine-grained microstructures of high-strength fibers can result in creep-related property changes, often at temperatures as low as 800-degrees-C. The underlying mechanism is grain boundary sliding controlled by grain size and grain boundary character, and thus by the fiber processing method. With the assumption of upper and lower limit creep requirements, the creep properties of a variety of current SiC and Al2O3 polycrystalline fibers are reviewed and discussed. Property evaluation is based on the results of a simple bend stress relaxation test which allows predictive creep equations to be developed for each fiber type describing the effects of time, temperature, and applied stress. It is shown that sintered SiC fibers with grain sizes below 1000 nm appear to offer the best performance in terms of strength and creep resistance. However, even these fibers may not be capable of long-term service above 1400-degrees-C. RP DICARLO, JA (reprint author), NASA,LEWIS RES CTR,DIV MAT,21000 BROOKPARK RD,CLEVELAND,OH 44135, USA. NR 22 TC 68 Z9 73 U1 3 U2 11 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0266-3538 J9 COMPOS SCI TECHNOL JI Compos. Sci. Technol. PY 1994 VL 51 IS 2 BP 213 EP 222 DI 10.1016/0266-3538(94)90191-0 PG 10 WC Materials Science, Composites SC Materials Science GA NC321 UT WOS:A1994NC32100010 ER PT J AU CHAMIS, CC SINGHAL, SN AF CHAMIS, CC SINGHAL, SN TI METAL-MATRIX COMPOSITES SO COMPOSITES SCIENCE AND TECHNOLOGY LA English DT Editorial Material C1 SVERDRUP TECHNOL INC,BROOKPARK,OH. RP CHAMIS, CC (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0266-3538 J9 COMPOS SCI TECHNOL JI Compos. Sci. Technol. PY 1994 VL 50 IS 1 BP 5 EP 6 DI 10.1016/0266-3538(94)90120-1 PG 2 WC Materials Science, Composites SC Materials Science GA MH258 UT WOS:A1994MH25800003 ER PT J AU MITAL, SK CHAMIS, CC GOTSIS, PK AF MITAL, SK CHAMIS, CC GOTSIS, PK TI MICROFRACTURE IN HIGH-TEMPERATURE METAL-MATRIX LAMINATES SO COMPOSITES SCIENCE AND TECHNOLOGY LA English DT Article DE FIBER FRACTURE; MATRIX FRACTURE; INTERFACE; INTERPHASE; DEBONDING; STRAIN ENERGY RELEASE RATE AB Computational procedures are described to evaluate the behavior of high-temperature metal-matrix composites. Typical results are presented from studies done on compliant layers to reduce the residual thermal micro-stresses and the effect of partial bonding on composite properties. A three-dimensional finite element analysis in conjunction with strain energy release rates is also described to evaluate composite microfracture. Typical results for micro-fracture in composites subjected to thermo-mechanical cyclic loading are discussed and presented. The results show that interfacial debonding follows fiber or matrix micro-fracture. C1 NASA,LEWIS RES CTR,MS 49-8,CLEVELAND,OH 44135. UNIV TOLEDO,TOLEDO,OH 43606. NR 12 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0266-3538 J9 COMPOS SCI TECHNOL JI Compos. Sci. Technol. PY 1994 VL 50 IS 1 BP 59 EP 70 DI 10.1016/0266-3538(94)90126-0 PG 12 WC Materials Science, Composites SC Materials Science GA MH258 UT WOS:A1994MH25800009 ER PT J AU WALKER, KP FREED, AD JORDAN, EH AF WALKER, KP FREED, AD JORDAN, EH TI THERMOVISCOPLASTIC ANALYSIS OF FIBROUS PERIODIC COMPOSITES BY THE USE OF TRIANGULAR SUBVOLUMES SO COMPOSITES SCIENCE AND TECHNOLOGY LA English DT Article DE GREEN FUNCTION; INTEGRAL EQUATION; HOMOGENIZATION; FOURIER SERIES; HETEROGENEOUS DEFORMATION; UNIT CELL ID ELASTIC-CONSTANTS; MODULI; SOLIDS AB The non-linear viscoplastic behavior of fibrous periodic composites is analyzed by discretizing the unit cell into triangular subvolumes. A set of these subvolumes can be configured by the analyst to construct a representation for the unit cell of a periodic composite. In each step of the loading history the total strain increment at any point is governed by an integral equation which applies to the entire composite. A Fourier series approximation allows the incremental stresses and strains to be determined within a unit cell of the periodic lattice. The non-linearity arising from the viscoplastic behavior of the constituent materials comprising the composite is treated as a fictitious body force in the governing integral equation. Specific numerical examples showing the stress distributions in the unit cell of a fibrous tungsten/copper metal-matrix composite under viscoplastic loading conditions are given. The stress distribution resulting in the unit cell when the composite material is subjected to an overall transverse stress loading history perpendicular to the fibers is found to be highly heterogeneous, and typical homogenization techniques based on treating the stress and strain distributions within the constituent phases as homogeneous result in large errors under inelastic loading conditions. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. UNIV CONNECTICUT,STORRS,CT 06268. RP WALKER, KP (reprint author), ENGN SCI SOFTWARE INC,315 LOG RD,SMITHFIELD,RI 02917, USA. OI Freed, Alan/0000-0002-3492-0628 NR 28 TC 13 Z9 13 U1 0 U2 1 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0266-3538 J9 COMPOS SCI TECHNOL JI Compos. Sci. Technol. PY 1994 VL 50 IS 1 BP 71 EP 84 DI 10.1016/0266-3538(94)90127-9 PG 14 WC Materials Science, Composites SC Materials Science GA MH258 UT WOS:A1994MH25800010 ER PT J AU CHAMIS, CC SINGHAL, SN AF CHAMIS, CC SINGHAL, SN TI PANEL DISCUSSION ON THE STATE-OF-THE-ART AND FUTURE-DIRECTION OF HIGH-TEMPERATURE COMPOSITE STRUCTURES SO COMPOSITES SCIENCE AND TECHNOLOGY LA English DT Article DE COMPOSITES; COMPUTATIONAL SIMULATION; HIGH-TEMPERATURE; TESTING; UNCERTAINTIES AB This article summarizes the discussion of a panel: 'On State of the Art and Future Directions of High-Temperature Composite Structures, ASME Summer Annual Meeting, Columbus, Ohio, 18 June 1991. The panel objective was a joint industry/academia/government perspective on: where are we, what are the inhibiting factors, and what is needed for rapid progress? Topics addressed include computational simulation versus traditional approaches, reliance on computational simulation versus testing, computational simulation of material processing and/or fabrication, design perspective, technology base, interdisciplinary, coengineering, probabilistic description of uncertainties, educating future researchers, government/industry/academia roles, and competitive advantage considerations. Select panel conclusions are: (1) increase use of computational simulation, (2) include material and fabrication process in the simulation, (3) apply probabilistic assessments to quantify uncertainties and minimize testing throughout the design/qualification/certification cycles, and (4) mandate closer cooperation among industry, academia and government. C1 SVERDRUP TECHNOL INC,BROOKPARK,OH 44142. RP CHAMIS, CC (reprint author), NASA,LEWIS RES CTR,21000 BROOKPK RD,MS 49-8,CLEVELAND,OH 44135, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0266-3538 J9 COMPOS SCI TECHNOL JI Compos. Sci. Technol. PY 1994 VL 50 IS 1 BP 129 EP 136 DI 10.1016/0266-3538(94)90132-5 PG 8 WC Materials Science, Composites SC Materials Science GA MH258 UT WOS:A1994MH25800015 ER PT J AU HO, HJ MORTON, J FARLEY, GL AF HO, HJ MORTON, J FARLEY, GL TI NONLINEAR NUMERICAL-ANALYSIS OF THE IOSIPESCU SPECIMEN FOR COMPOSITE-MATERIALS SO COMPOSITES SCIENCE AND TECHNOLOGY LA English DT Article DE NONLINEARITY; NUMERICAL ANALYSIS; COMPOSITE MATERIALS; IOSIPESCU SPECIMEN; SHEAR MODULUS; CORRECTION FACTORS ID SHEAR TEST METHOD; UNIDIRECTIONAL COMPOSITES; BEHAVIOR AB A non-linear elastic finite element analysis is presented of the Iosipescu shear specimen tested in the modified Wyoming fixture for unidirectional graphite/epoxy composites. It is shown that the non-linear effects due to specimen-to-fixture contact interactions and specimen geometry on the overall shear response are negligible. It is proposed that the tangential shear modulus should be used to characterize the shear resistance of composite materials with highly non-linear shear response. The correction factors, which are needed to compensate for the non-uniformity of the shear stress or strain distribution in the specimen test section for shear modulus measurement, have to be defined carefully. Strain contours in the non-linear response ranges are presented and the initiation of failure in the notch regions is investigated. C1 VIRGINIA POLYTECH INST & STATE UNIV,DEPT ENGN SCI & MECH,BLACKSBURG,VA 24061. NASA,LANGLEY RES CTR,USA,AEROSTRUCT DIRECTORATE,HAMPTON,VA 23665. NR 22 TC 23 Z9 23 U1 2 U2 2 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0266-3538 J9 COMPOS SCI TECHNOL JI Compos. Sci. Technol. PY 1994 VL 50 IS 3 BP 355 EP 365 DI 10.1016/0266-3538(94)90023-X PG 11 WC Materials Science, Composites SC Materials Science GA MU842 UT WOS:A1994MU84200008 ER PT J AU KARP, AH HELLER, D SIMON, H AF KARP, AH HELLER, D SIMON, H TI 1993 BELL,GORDON PRIZE WINNERS SO COMPUTER LA English DT Article C1 SHELL OIL CO,COMP SCI RES DEPT,HOUSTON,TX 77001. NASA,AMES RES CTR,COMP SCI CORP,MOFFETT FIELD,CA 94035. RP KARP, AH (reprint author), HEWLETT PACKARD CORP,PALO ALTO,CA 94304, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0018-9162 J9 COMPUTER JI Computer PD JAN PY 1994 VL 27 IS 1 BP 69 EP 75 PG 7 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA MP973 UT WOS:A1994MP97300009 ER PT S AU FRISCH, HP AF FRISCH, HP BE Pereira, MFO Ambrosio, JAC TI MAN-MACHINE INTERACTION DYNAMICS AND PERFORMANCE ANALYSIS, BIOMECHANICS, AND NDISCOS MULTIBODY EQUATIONS SO COMPUTER-AIDED ANALYSIS OF RIGID AND FLEXIBLE MECHANICAL SYSTEMS SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Study Institute on Computer-Aided Analysis of Rigid and Flexible Mechanical Systems CY JUN 27-JUL 09, 1993 CL TROIA, PORTUGAL SP NATO, USA, TARDEC, NATL SCI FDN, JUNTA NACL INVESTIG CIENT & TECHNOL, FDN LUSO AMER DESENVOLVIMENTO, INST ENGENHARIA MECAN, UNIV TECN LISBOA, CTR MECAN & MAT C1 NASA,GODDARD SPACE FLIGHT CTR,ROBOT BRANCH,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 1 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2839-6 J9 NATO ADV SCI INST SE PY 1994 VL 268 BP 555 EP 608 PG 54 WC Computer Science, Interdisciplinary Applications; Mechanics SC Computer Science; Mechanics GA BA60Y UT WOS:A1994BA60Y00018 ER PT J AU ELISHAKOFF, I LI, YW STARNES, JH AF ELISHAKOFF, I LI, YW STARNES, JH TI A DETERMINISTIC METHOD TO PREDICT THE EFFECT OF UNKNOWN-BUT-BOUNDED ELASTIC-MODULI ON THE BUCKLING OF COMPOSITE STRUCTURES SO COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING LA English DT Article AB A new, non-probabilistic method is developed in this study to predict the variability in buckling loads of composite plates and shells stemming from the unavoidable scatter in elastic moduli. The available measurements of elastic moduli are fitted by the four-dimensional uncertainty 'box' and appropriate ellipsoid. For the specific cases considered, the maximum buckling load of the composite plate exceeds by 11% the value of the buckling load based on the calculation using the nominal values of elastic moduli. In the case of the cylindrical shell, an appropriate exceedance constitutes 9%. C1 FLORIDA ATLANTIC UNIV,DEPT MECH ENGN,BOCA RATON,FL 33431. NASA,LANGLEY RES CTR,HAMPTON,VA 23664. RP ELISHAKOFF, I (reprint author), FLORIDA ATLANTIC UNIV,CTR APPL STOCHAST RES,POB 3091,BOCA RATON,FL 33431, USA. NR 9 TC 33 Z9 40 U1 0 U2 3 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0045-7825 J9 COMPUT METHOD APPL M JI Comput. Meth. Appl. Mech. Eng. PD JAN PY 1994 VL 111 IS 1-2 BP 155 EP 167 DI 10.1016/0045-7825(94)90043-4 PG 13 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications; Mechanics SC Engineering; Mathematics; Mechanics GA MU777 UT WOS:A1994MU77700006 ER PT J AU TESSLER, A RIGGS, HR MACY, SC AF TESSLER, A RIGGS, HR MACY, SC TI A VARIATIONAL METHOD FOR FINITE-ELEMENT STRESS RECOVERY AND ERROR ESTIMATION SO COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING LA English DT Article ID 3-DIMENSIONAL ELASTIC PROBLEMS; SHEAR AB A variational method for obtaining smoothed stresses from a finite element derived non-smooth stress field is presented. The method is based on minimizing a functional involving discrete least-squares error plus a penalty constraint that ensures smoothness of the stress field. An equivalent accuracy criterion is developed for the smoothing analysis which results in a C1-continuous smoothed stress field possessing the same order of accuracy as that found at the superconvergent optimal stress points of the original finite element analysis. Application of the smoothing analysis to residual error estimation is also demonstrated. C1 UNIV HAWAII MANOA,DEPT CIVIL ENGN,HONOLULU,HI 96822. LOCKHEED ENGN & SCI CO,HAMPTON,VA 23666. RP TESSLER, A (reprint author), NASA,LANGLEY RES CTR,COMPUTAT MECH BRANCH,M-S 240,HAMPTON,VA 23681, USA. RI Tessler, Alexander/A-4729-2009 NR 24 TC 20 Z9 20 U1 1 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0045-7825 J9 COMPUT METHOD APPL M JI Comput. Meth. Appl. Mech. Eng. PD JAN PY 1994 VL 111 IS 3-4 BP 369 EP 382 DI 10.1016/0045-7825(94)90140-6 PG 14 WC Engineering, Multidisciplinary; Mathematics, Interdisciplinary Applications; Mechanics SC Engineering; Mathematics; Mechanics GA MX368 UT WOS:A1994MX36800010 ER PT J AU PARTRIDGE, H BAUSCHLICHER, CW LANGHOFF, SR AF PARTRIDGE, H BAUSCHLICHER, CW LANGHOFF, SR TI AB-INITIO ELECTRONIC-STRUCTURE STUDIES IN MOLECULAR-SPECTROSCOPY AND CHEMICAL THERMODYNAMICS SO COMPUTER PHYSICS COMMUNICATIONS LA English DT Review ID BOND-DISSOCIATION ENERGY; GAUSSIAN-BASIS SETS; ATOMIC NATURAL ORBITALS; SPIN-RESONANCE-SPECTRA; QUANTUM MONTE-CARLO; GROUND-STATE; CONFIGURATION-INTERACTION; RADIATIVE LIFETIMES; OXYGEN MOLECULES; THEORETICAL DETERMINATION AB This article provides an overview of the principal computational approaches to the electronic structure of molecules and their applications in the areas of spectroscopy and thermodynamics. The emphasis is on techniques that include electron correlation to a high level with extended basis sets. Applications in spectroscopy include radiative lifetimes, electronic state separations, and identification of new band systems. Applications in thermodynamics are focused on C-H, O-H, metal-oxygen, and metal ion-rare-gas binding energies. Future developments of computational methods and methods of exploiting new computer hardware are expected to significantly extend the range of systems that can be treated reliably. RP PARTRIDGE, H (reprint author), NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. NR 125 TC 0 Z9 0 U1 2 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0010-4655 J9 COMPUT PHYS COMMUN JI Comput. Phys. Commun. PD JAN PY 1994 VL 78 IS 3 BP 223 EP 237 DI 10.1016/0010-4655(94)90001-9 PG 15 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA MU778 UT WOS:A1994MU77800001 ER PT J AU WANG, HY BLOUGH, DM ALKALAJ, L AF WANG, HY BLOUGH, DM ALKALAJ, L TI A PRACTICAL APPROACH TO COMPARISON-BASED FAULT-DIAGNOSIS IN MULTIPROCESSOR SYSTEMS SO COMPUTER SYSTEMS SCIENCE AND ENGINEERING LA English DT Article DE FAULT-TOLERANCE; COMPARISON MODEL; NATURAL REDUNDANCY MECHANISM; COSMOS AB This paper describes a comparison model for fault diagnosis in multiprocessor systems. The comparisons in this model are performed according to a natural redundancy mechanism used in many existing fault-tolerant multiprocessor systems, making the model extremely practical. It is shown that this model generalizes both the classical PMC model and the Maeng/Malek comparison model The application of this model to the COmmon Spaceborne Multicomputer Operating System (COSMOS) is illustrated. We also show that the model can be used to minimize either the number of communication links required in a system or the number of tests that must be performed. Finally, a distributed diagnosis algorithm is presented that uses about half of the number of tests used by previous algorithms when the number of faults is relatively small. C1 UNIV CALIF IRVINE,DEPT ELECT & COMP ENGN,IRVINE,CA 92717. JET PROP LAB,PASADENA,CA 91109. NR 16 TC 1 Z9 1 U1 0 U2 0 PU C R L PUBLISHING LTD PI MARKET HARBOROUGH PA PO BOX 31, MARKET HARBOROUGH, LEICS, ENGLAND LE16 9RQ SN 0267-6192 J9 COMPUT SYST SCI ENG JI Comput. Syst. Sci. Eng. PD JAN PY 1994 VL 9 IS 1 BP 11 EP 20 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA NB360 UT WOS:A1994NB36000002 ER PT J AU ANDERSON, WK BONHAUS, DL AF ANDERSON, WK BONHAUS, DL TI AN IMPLICIT UPWIND ALGORITHM FOR COMPUTING TURBULENT FLOWS ON UNSTRUCTURED GRIDS SO COMPUTERS & FLUIDS LA English DT Article AB An implicit, Navier-Stokes solution algorithm is presented for the computation of turbulent flow on unstructured grids. The inviscid fluxes are computed using an upwind algorithm and the solution is advanced in time using a backward-Euler time-stepping scheme. At each time step, the linear system of equations is approximately solved with a point-implicit relaxation scheme. This methodology provides a viable and robust algorithm for computing turbulent flows on unstructured meshes. Results are shown for subsonic flow over a-NACA 0012 airfoil and for transonic flow over an RAE 2822 airfoil exhibiting a strong upper-surface shock. In addition, results are shown for 3- and 4-element airfoil configurations. For the calculations, two 1-equation turbulence models are utilized. For the NACA 0012 airfoil a pressure distribution and force data are compared with other computational results as well as with the experiment. Comparisons of computed pressure distributions and velocity profiles with experimental data are shown for the RAE airfoil and for the 3-element configuration. For the 4-element case, comparisons of surface pressure distributions with the experiment are made. In general, the agreement between the computations and the experiment is good. RP ANDERSON, WK (reprint author), NASA,LANGLEY RES CTR,MS 128,HAMPTON,VA 23665, USA. NR 34 TC 206 Z9 210 U1 1 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7930 J9 COMPUT FLUIDS JI Comput. Fluids PD JAN PY 1994 VL 23 IS 1 BP 1 EP 21 DI 10.1016/0045-7930(94)90023-X PG 21 WC Computer Science, Interdisciplinary Applications; Mechanics SC Computer Science; Mechanics GA LX566 UT WOS:A1994LX56600001 ER PT J AU JACOBS, PA AF JACOBS, PA TI NUMERICAL-SIMULATION OF TRANSIENT HYPERVELOCITY FLOW IN AN EXPANSION TUBE SO COMPUTERS & FLUIDS LA English DT Article AB Several numerical simulations of the transient flow of helium in an expansion tube are presented in an effort to identify some of the basic mechanisms which cause the noisy test flows seen in experiments. The calculations were performed with an axisymmetric Navier-Stokes code based on a finite-volume formulation and upwinding techniques. Although laminar flow and ideal bursting of the diaphragms was assumed, the simulations showed some of the important features seen in the experiments. In particular, the discontinuity in the tube diameter at the primary-diaphragm station introduced a transverse perturbation to the expanding driver gas and this perturbation was seen to propagate into the test gas under some flow conditions. The disturbances seen in the test flow can be characterized as either small-amplitude, low-frequency noise, possibly introduced during shock-compression, or large-amplitude, high frequency noise, associated with the passage of the reflected-head of the unsteady expansion. C1 NASA,LANGLEY RES CTR,INST COMP APPLICAT SCI & ENGN,HAMPTON,VA 23665. NR 17 TC 10 Z9 10 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7930 J9 COMPUT FLUIDS JI Comput. Fluids PD JAN PY 1994 VL 23 IS 1 BP 77 EP 101 DI 10.1016/0045-7930(94)90028-0 PG 25 WC Computer Science, Interdisciplinary Applications; Mechanics SC Computer Science; Mechanics GA LX566 UT WOS:A1994LX56600006 ER PT J AU QUIRK, JJ AF QUIRK, JJ TI AN ALTERNATIVE TO UNSTRUCTURED GRIDS FOR COMPUTING GAS-DYNAMIC FLOWS AROUND ARBITRARILY COMPLEX 2-DIMENSIONAL BODIES SO COMPUTERS & FLUIDS LA English DT Article ID EULER EQUATIONS AB Within the shock-capturing community, the need to simulate flows around geometrically complex bodies has resulted in an inexorable shift away from schemes which employ body-fitted grids to schemes which employ unstructured grids. Although unstructured grids are undeniably effective, in view of the increasing reliance placed on computational results, such a wholesale shift in mentality should give cause for concern. The concept of using several computer codes to cross-check numerical results becomes ill-founded if all codes follow the same methodology. In this paper we describe an alternative approach for dealing with arbitrarily complex two-dimensional geometries, the so-called Cartesian boundary method. Conceptually, the Cartesian boundary method is quite simple. Solid bodies blank out areas of a background, Cartesian mesh, and the resultant cut cells are singled out for special attention. However, there are several obstacles that must be overcome in order to achieve a practical scheme. We present a general strategy that overcomes these obstacles, together with details of our successful conversion of an adaptive mesh algorithm from a body-fitted code to a Cartesian boundary code. RP QUIRK, JJ (reprint author), NASA,LANGLEY RES CTR,INST COMP APPLICAT SCI & ENGN,HAMPTON,VA 23681, USA. NR 19 TC 120 Z9 126 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7930 J9 COMPUT FLUIDS JI Comput. Fluids PD JAN PY 1994 VL 23 IS 1 BP 125 EP 142 DI 10.1016/0045-7930(94)90031-0 PG 18 WC Computer Science, Interdisciplinary Applications; Mechanics SC Computer Science; Mechanics GA LX566 UT WOS:A1994LX56600009 ER PT J AU YU, ST MCBRIDE, BJ HSIEH, KC SHUEN, JS AF YU, ST MCBRIDE, BJ HSIEH, KC SHUEN, JS TI A CHEMICAL-EQUILIBRIUM METHOD FOR HYPERSONIC FLOW SIMULATIONS SO COMPUTERS & FLUIDS LA English DT Article ID SCHEME AB In this paper, we report a new and efficient method to simulate high-speed, chemically reacting flows with a chemical equilibrium model. This computational method is based on the Helmholtz free-energy minimization with two additional treatments to enhance computational efficiency. First, an estimation scheme for species compositions is implemented to either bypass the numerical iterations or significantly reduce them in the free-energy minimization procedure. Second, a frozen flow calculation method is adopted to take advantage of the non-reacting part of the hypersonic flow field. In general, 95% of the full minimization procedure is avoided by using the two methods and no accuracy is sacrificed in the final converged solution. In addition, the flow solver adopted in the present study is incorporated with comprehensive, high temperature, gas property models to simulate hypersonic flows and employs an implicit, finite-volume, lower-upper (LU), time marching scheme to solve flow equations in a fully coupled and very efficient manner. Finally, hypersonic internal flows under severe conditions are simulated as numerical examples. The results are compared with those of a finite-rate model, in which 11 species equations coupled with flow equations are solved simultaneously. The results clearly depict differences in the flow characteristics predicted by the two chemistry models. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP YU, ST (reprint author), NASA,LEWIS RES CTR GRP,SVERDRUP TECHNOL INC,2001 AEROSP PKWY,BROOKPARK,OH 44142, USA. NR 13 TC 1 Z9 1 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7930 J9 COMPUT FLUIDS JI Comput. Fluids PD JAN PY 1994 VL 23 IS 1 BP 143 EP 155 DI 10.1016/0045-7930(94)90032-9 PG 13 WC Computer Science, Interdisciplinary Applications; Mechanics SC Computer Science; Mechanics GA LX566 UT WOS:A1994LX56600010 ER PT B AU BUNTINE, WL AF BUNTINE, WL BE Sall, J Lehman, A TI DATA ANALYSIS WITH GRAPHICAL MODELS - SOFTWARE TOOLS SO COMPUTING SCIENCE AND STATISTICS, VOL 26: COMPUTATIONALLY INTENSIVE STATISTICAL METHODS, PROCEEDINGS LA English DT Proceedings Paper CT 26th Symposium on the Interface of Computing Science and Statistics - Computationally Intensive Statistical Methods CY JUN 15-18, 1994 CL RESEARCH TRIANGLE PK, NC SP Interface Fdn N Amer C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERFACE FOUNDATION NORTH AMERICA PI FAIRFAX PA PO BOX 7460, FAIRFAX, VA 22039-7460 BN 1-886658-00-5 PY 1994 BP 441 EP 445 PG 5 WC Computer Science, Theory & Methods; Statistics & Probability SC Computer Science; Mathematics GA BD22V UT WOS:A1994BD22V00083 ER PT B AU OVERTON, E HAMMOUD, AN BAUMANN, ED MYERS, IT AF OVERTON, E HAMMOUD, AN BAUMANN, ED MYERS, IT GP IEEE, DIELECT & ELECT INSULAT SOC TI EFFECTS OF COMBINED STRESSING ON THE ELECTRICAL-PROPERTIES OF FILM AND CERAMIC CAPACITORS SO CONFERENCE RECORD OF THE 1994 IEEE INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATION LA English DT Proceedings Paper CT 1994 IEEE International Symposium on Electrical Insulation CY JUN 05-08, 1994 CL PITTSBURGH, PA SP IEEE, DIELECT & ELECT INSULAT SOC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-7803-1942-7 PY 1994 BP 249 EP 252 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BA96P UT WOS:A1994BA96P00059 ER PT B AU STUEBER, TJ HAMMOUD, A STAVNES, MW HROVAT, K AF STUEBER, TJ HAMMOUD, A STAVNES, MW HROVAT, K GP IEEE, DIELECT & ELECT INSULAT SOC TI EVALUATION OF PYROLYSIS AND ARC TRACKING ON CANDIDATE WIRE INSULATION DESIGNS FOR SPACE APPLICATIONS SO CONFERENCE RECORD OF THE 1994 IEEE INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATION LA English DT Proceedings Paper CT 1994 IEEE International Symposium on Electrical Insulation CY JUN 05-08, 1994 CL PITTSBURGH, PA SP IEEE, DIELECT & ELECT INSULAT SOC C1 NASA,LEWIS RES CTR,NYMA INC,BROOKPARK,OH 44142. 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 0-7803-1942-7 PY 1994 BP 473 EP 476 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BA96P UT WOS:A1994BA96P00113 ER PT B AU HAMMOUD, AN STAVNES, MW DICKMAN, JE BURKHARDT, LA WOODFORD, LM AF HAMMOUD, AN STAVNES, MW DICKMAN, JE BURKHARDT, LA WOODFORD, LM GP IEEE, DIELECT & ELECT INSULAT SOC TI EVALUATION OF WIRING CONSTRUCTIONS FOR SPACE APPLICATIONS SO CONFERENCE RECORD OF THE 1994 IEEE INTERNATIONAL SYMPOSIUM ON ELECTRICAL INSULATION LA English DT Proceedings Paper CT 1994 IEEE International Symposium on Electrical Insulation CY JUN 05-08, 1994 CL PITTSBURGH, PA SP IEEE, DIELECT & ELECT INSULAT SOC C1 NASA,LEWIS RES CTR,NYMA INC,BROOKPARK,OH 44142. 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 0-7803-1942-7 PY 1994 BP 592 EP 595 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BA96P UT WOS:A1994BA96P00144 ER PT S AU SATORIUS, EH MULLIGAN, JJ AF SATORIUS, EH MULLIGAN, JJ BE Singh, A TI ASYMPTOTIC ANALYSIS OF SCALE-INVARIANT COST FUNCTIONS FOR BLIND ADAPTIVE PROCESSING SO CONFERENCE RECORD OF THE TWENTY-EIGHTH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS, VOLS 1 AND 2 SE CONFERENCE RECORD OF THE ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS AND COMPUTERS LA English DT Proceedings Paper CT 28th Asilomar Conference on Signals, Systems and Computers CY OCT 30-NOV 02, 1994 CL PACIFIC GROVE, CA SP NAVAL POSTGRAD SCH, SAN JOSE STATE UNIV C1 JET PROP LAB,PASADENA,CA 91109. 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 SN 1058-6393 BN 0-8186-6405-3 J9 CONF REC ASILOMAR C PY 1994 BP 1468 EP 1472 PG 5 WC Computer Science, Theory & Methods; Telecommunications SC Computer Science; Telecommunications GA BC60P UT WOS:A1994BC60P00286 ER PT J AU HELMREICH, RL AF HELMREICH, RL TI PILOTS, PERSONALITY, AND PERFORMANCE - HUMAN-BEHAVIOR AND STRESS IN THE SKIES - DEITZ,SR, THOMS,WE SO CONTEMPORARY PSYCHOLOGY LA English DT Book Review RP HELMREICH, RL (reprint author), UNIV TEXAS,NASA,FAA AEROSP CREW RES PROJECT,AUSTIN,TX 78712, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0010-7549 J9 CONTEMP PSYCHOL JI Comtemp. Psychol. PD JAN PY 1994 VL 39 IS 1 BP 22 EP 22 PG 1 WC Psychology, Multidisciplinary SC Psychology GA MP395 UT WOS:A1994MP39500011 ER PT B AU VEDDER, PW BROWN, A DRAKE, JJ PATTERER, RJ MATHIOUDAKIS, M CULLY, S PETTERSEN, BR AF VEDDER, PW BROWN, A DRAKE, JJ PATTERER, RJ MATHIOUDAKIS, M CULLY, S PETTERSEN, BR BE Caillault, JP TI EUVE photometry observations of cool stars SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 NASA HEADQUARTERS,DIV ASTROPHYS,WASHINGTON,DC 20546. 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 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 13 EP 22 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00002 ER PT B AU CARPENTER, KG ROBINSON, RD JUDGE, PG EBBETS, DC BRANDT, JC AF CARPENTER, KG ROBINSON, RD JUDGE, PG EBBETS, DC BRANDT, JC BE Caillault, JP TI GHRS observations and analysis of the O I and C I resonance lines in the UV spectrum of alpha ORI (M2 IAB) SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. 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 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 56 EP 58 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00011 ER PT B AU FEKEL, FC BALACHANDRAN, S AF FEKEL, FC BALACHANDRAN, S BE Caillault, JP TI Lithium in chromospherically active giants SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. NR 0 TC 11 Z9 11 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 279 EP 281 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00060 ER PT B AU ADAMS, M SOLANKI, SK HAGYARD, MJ MOORE, RL AF ADAMS, M SOLANKI, SK HAGYARD, MJ MOORE, RL BE Caillault, JP TI A search for sunspot canopies using a vector magnetograph SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SOLAR SCI BRANCH,HUNTSVILLE,AL 35812. 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 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 342 EP 344 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00073 ER PT B AU BROSIUS, JW ROBINSON, RD MARAN, SP AF BROSIUS, JW ROBINSON, RD MARAN, SP BE Caillault, JP TI Lyman-alpha emission as a diagnostic of superthermal proton properties in stellar flares SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 360 EP 362 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00079 ER PT B AU ROBINSON, RD CARPENTER, KG PERCIVAL, JW AF ROBINSON, RD CARPENTER, KG PERCIVAL, JW BE Caillault, JP TI A search for microflaring activity on dMe flare stars SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 NASA,GODDARD SPACE FLIGHT CTR,COMP SCI CORP,GREENBELT,MD 20771. RI Carpenter, Kenneth/D-4740-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 456 EP 458 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00110 ER PT B AU AKE, TB PARSONS, SB AF AKE, TB PARSONS, SB BE Caillault, JP TI Absolute magnitudes of luminous late-type stars from UV companions SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 COMP SCI CORP,GODDARD SPACE FLIGHT CTR,ASTRON PROGRAM,GREENBELT,MD 20771. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 675 EP 677 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00163 ER PT B AU AKE, TB WAHLGREN, GM JOHNSON, HR JORISSEN, A AF AKE, TB WAHLGREN, GM JOHNSON, HR JORISSEN, A BE Caillault, JP TI The unusual S star system HD 191589 SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 COMP SCI CORP,GODDARD SPACE FLIGHT CTR,ASTRON PROGRAM,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 678 EP 680 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00164 ER PT B AU DRAKE, SA SIMON, T LINSKY, JL WHITE, NE AF DRAKE, SA SIMON, T LINSKY, JL WHITE, NE BE Caillault, JP TI An efficient way of identifying new active stars: A VLA survey of X-ray-selected active stellar candidates SO COOL STARS, STELLAR SYSTEMS, AND THE SUN - 8TH CAMBRIDGE WORKSHOP SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 8th Cambridge Workshop on Cool Stars, Stellar Systems and the Sun CY OCT 11-14, 1993 CL GEORGIA CTR CONTINUING EDUC, ATHENS, GA SP Georgia Univ HO GEORGIA CTR CONTINUING EDUC C1 NASA,GODDARD SPACE FLIGHT CTR,USRA,GREENBELT,MD 20771. RI White, Nicholas/B-6428-2012 OI White, Nicholas/0000-0003-3853-3462 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 0-937707-83-X J9 ASTR SOC P PY 1994 VL 64 BP 690 EP 692 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BD88D UT WOS:A1994BD88D00168 ER PT S AU OGBUJI, LUJT AF OGBUJI, LUJT BE Nickel, KG TI THE OXIDATION PROCESS IN SILICON-NITRIDE SO CORROSION OF ADVANCED CERAMICS: MEASUREMENT AND MODELLING SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Corrosion of Advanced Ceramics CY AUG 30-SEP 03, 1993 CL TUBINGEN, GERMANY SP NATO, SCI COMM C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 9 Z9 9 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2838-8 J9 NATO ADV SCI INST SE PY 1994 VL 267 BP 117 EP 129 PG 13 WC Materials Science, Ceramics SC Materials Science GA BA60X UT WOS:A1994BA60X00009 ER PT S AU JACOBSON, NS SMIALEK, JL FOX, DS AF JACOBSON, NS SMIALEK, JL FOX, DS BE Nickel, KG TI MOLTEN-SALT CORROSION OF CERAMICS SO CORROSION OF ADVANCED CERAMICS: MEASUREMENT AND MODELLING SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on Corrosion of Advanced Ceramics CY AUG 30-SEP 03, 1993 CL TUBINGEN, GERMANY SP NATO, SCI COMM C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 9 Z9 9 U1 0 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2838-8 J9 NATO ADV SCI INST SE PY 1994 VL 267 BP 205 EP 222 PG 18 WC Materials Science, Ceramics SC Materials Science GA BA60X UT WOS:A1994BA60X00016 ER PT S AU HEPP, AF ECKLES, WE DURAJ, SA ANDRAS, MT FANWICK, PE RICHMAN, RM SABAT, ML POWER, MB GORDON, EM BARRON, AR AF HEPP, AF ECKLES, WE DURAJ, SA ANDRAS, MT FANWICK, PE RICHMAN, RM SABAT, ML POWER, MB GORDON, EM BARRON, AR BE Barron, AR Fischman, GS Fury, MA Hepp, AF TI COPPER-CONTAINING CERAMIC PRECURSOR SYNTHESIS - SOLID-STATE TRANSFORMATIONS AND MATERIALS TECHNOLOGY SO COVALENT CERAMICS II: NON-OXIDES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Covalent Ceramics II: Non-Oxides, at the 1993 Fall Meeting of the Materials-Research-Society CY NOV 29-DEC 02, 1993 CL BOSTON, MA SP MAT RES SOC C1 NASA,LEWIS RES CTR,PHOTOVOLTA BRANCH,CLEVELAND,OH 44135. OI Barron, Andrew/0000-0002-2018-8288 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 1-55899-226-X J9 MATER RES SOC SYMP P PY 1994 VL 327 BP 23 EP 28 PG 6 WC Materials Science, Ceramics; Materials Science, Composites; Physics, Condensed Matter SC Materials Science; Physics GA BB19R UT WOS:A1994BB19R00003 ER PT S AU HEPP, AF HEHEMANN, DG DURAJ, SA CLARK, EB ECKLES, WE FANWICK, PE AF HEPP, AF HEHEMANN, DG DURAJ, SA CLARK, EB ECKLES, WE FANWICK, PE BE Barron, AR Fischman, GS Fury, MA Hepp, AF TI ONE-STEP SYNTHESIS OF DITHIOCARBAMATES FROM METAL POWDERS SO COVALENT CERAMICS II: NON-OXIDES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Covalent Ceramics II: Non-Oxides, at the 1993 Fall Meeting of the Materials-Research-Society CY NOV 29-DEC 02, 1993 CL BOSTON, MA SP MAT RES SOC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 4 Z9 4 U1 0 U2 1 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-226-X J9 MATER RES SOC SYMP P PY 1994 VL 327 BP 29 EP 34 PG 6 WC Materials Science, Ceramics; Materials Science, Composites; Physics, Condensed Matter SC Materials Science; Physics GA BB19R UT WOS:A1994BB19R00004 ER PT S AU HEPP, AF ANDRAS, MT LANDRY, CC BARRON, AR AF HEPP, AF ANDRAS, MT LANDRY, CC BARRON, AR BE Barron, AR Fischman, GS Fury, MA Hepp, AF TI ROOM-TEMPERATURE SYNTHESIS OF CUINO2 (Q=S OR SE) IN NONAQUEOUS SOLUTION USING AN ORGANOINDIUM REAGENT SO COVALENT CERAMICS II: NON-OXIDES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Covalent Ceramics II: Non-Oxides, at the 1993 Fall Meeting of the Materials-Research-Society CY NOV 29-DEC 02, 1993 CL BOSTON, MA SP MAT RES SOC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 2 U2 2 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-226-X J9 MATER RES SOC SYMP P PY 1994 VL 327 BP 83 EP 88 PG 6 WC Materials Science, Ceramics; Materials Science, Composites; Physics, Condensed Matter SC Materials Science; Physics GA BB19R UT WOS:A1994BB19R00012 ER PT B AU HAYES, P CROOKE, J PERKINS, B AF HAYES, P CROOKE, J PERKINS, B BE Heaney, JB Burriesci, LG TI CRYOGENIC AND AMBIENT TESTING OF THE CIRS BERYLLIUM TELESCOPES SO CRYOGENIC OPTICAL SYSTEMS AND INSTRUMENTS VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Cryogenic Optical Systems and Instruments VI CY APR 04-05, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-8194-1531-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2227 BP 15 EP 25 DI 10.1117/12.178609 PG 11 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BA83Y UT WOS:A1994BA83Y00003 ER PT B AU HAYES, P JENNINGS, DE LYONS, J AF HAYES, P JENNINGS, DE LYONS, J BE Heaney, JB Burriesci, LG TI DEVELOPMENT AND TESTING OF THE CIRS RETROREFLECTORS SO CRYOGENIC OPTICAL SYSTEMS AND INSTRUMENTS VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Cryogenic Optical Systems and Instruments VI CY APR 04-05, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Jennings, Donald/D-7978-2012 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 0-8194-1531-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2227 BP 37 EP 43 DI 10.1117/12.178594 PG 7 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BA83Y UT WOS:A1994BA83Y00006 ER PT B AU DIPIRRO, MJ SHIRRON, PJ TUTTLE, JG AF DIPIRRO, MJ SHIRRON, PJ TUTTLE, JG BE Heaney, JB Burriesci, LG TI LOW GRAVITY SUPERFLUID TRANSFER CAN BE DONE - THE RESULTS OF THE SHOOT FLIGHT DEMONSTRATION SO CRYOGENIC OPTICAL SYSTEMS AND INSTRUMENTS VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Cryogenic Optical Systems and Instruments VI CY APR 04-05, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-8194-1531-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2227 BP 222 EP 228 DI 10.1117/12.178607 PG 7 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BA83Y UT WOS:A1994BA83Y00024 ER PT J AU DIPIRRO, MJ SHIRRON, PJ TUTTLE, JG AF DIPIRRO, MJ SHIRRON, PJ TUTTLE, JG TI THE TRANSFER OF SUPERFLUID-HELIUM IN-SPACE SO CRYOGENICS LA English DT Article; Proceedings Paper CT 15th International Cryogenic Engineering Conference (ICEC 15) CY JUN 07-10, 1994 CL GENOVA, ITALY SP INT CRYOGEN ENGN COMM ID SHOOT AB The Superfluid Helium On-Orbit Transfer (SHOOT) Flight Demonstration was part of the space shuttle STS-57 mission in June, 1993. The experiment objectives included: transfer of superfluid between two dewars in a low gravity environment at different flow rates; operation of two different liquid acquisition devices within the dewars; liquid/vapor phase separation for normal liquid helium as well as superfluid at varying venting rates; accurate mass gauging and flow metering; and autonomous control of the transfer process by an expert system aboard a computer on the shuttle. This paper summarizes the findings of the SHOOT experiment and the performance of individual components, with particular emphasis on the anomalous behavior of one of the phase separators. RP DIPIRRO, MJ (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 713,GREENBELT,MD 20771, USA. NR 15 TC 4 Z9 4 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0011-2275 J9 CRYOGENICS JI Cryogenics PY 1994 VL 34 SU ICEC BP 267 EP 272 DI 10.1016/S0011-2275(05)80059-1 PG 6 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA PY678 UT WOS:A1994PY67800060 ER PT J AU MASON, P GUTT, G MACNEAL, P ROGERS, D BUNKER, E TORII, R WORDEN, P AF MASON, P GUTT, G MACNEAL, P ROGERS, D BUNKER, E TORII, R WORDEN, P TI SYSTEM-DESIGN FOR THE CONTROL OF LIQUID-HELIUM BY ELECTROSTATIC FORCES FOR THE SATELLITE TEST OF EQUIVALENCE PRINCIPLE (STEP) MISSION SO CRYOGENICS LA English DT Article; Proceedings Paper CT 15th International Cryogenic Engineering Conference (ICEC 15) CY JUN 07-10, 1994 CL GENOVA, ITALY SP INT CRYOGEN ENGN COMM AB Since the equivalence principle is a fundamental postulate of Einstein's general theory of relativity, a precise test is of great scientific interest. An improved test of the equivalence of inertial and gravitational mass by a factor of 10(6) is non possible, using superconducting measurement technology in an earth-orbiting spacecraft. Superfluid liquid helium must be used as a cryogen to maintain the temperature of the four gravimeters at 1.8 K. Because of the extreme sensitivity of the measurement, the gravitational disturbance caused by the motion of the liquid helium in the local gravity-gradient field if of concern. It is proposed to use electrostatic forces to provide the necessary control. We present a description of the design and performance of a proposed flight system. C1 STANFORD UNIV,PALO ALTO,CA 94305. RP MASON, P (reprint author), CALTECH,JET PROP LAB,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0011-2275 J9 CRYOGENICS JI Cryogenics PY 1994 VL 34 SU ICEC BP 277 EP 280 DI 10.1016/S0011-2275(05)80061-X PG 4 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA PY678 UT WOS:A1994PY67800062 ER PT J AU KITTEL, P SALERNO, LJ SPIVAK, AL AF KITTEL, P SALERNO, LJ SPIVAK, AL TI THERMAL CONDUCTANCE OF PRESSED BIMETALLIC CONTACTS AT LIQUID-NITROGEN TEMPERATURES SO CRYOGENICS LA English DT Article; Proceedings Paper CT 15th International Cryogenic Engineering Conference (ICEC 15) CY JUN 07-10, 1994 CL GENOVA, ITALY SP INT CRYOGEN ENGN COMM AB The thermal conductance of one aluminum and one stainless steel pressed metal contacts has been measured near 77 K, with applied forces from 8.9 N to 267 N. Both 5052 or 5083 aluminum were used as the upper contact. The lower contact was 304L stainless steel. The thermal conductance is linear in temperature over the range of measurement and ranged from roughly 9 to 21 mW/K. There is no difference in conductance between the two aluminum alloys. Extrapolating the data to zero applied force does not result in zero thermal conductance. A possible cause of this anomalous effect is discussed. C1 TRANS BAY ELECTR,RICHMOND,CA 94804. RP KITTEL, P (reprint author), NASA,AMES RES CTR,MS 244-10,MOFFETT FIELD,CA 94053, USA. NR 5 TC 3 Z9 3 U1 1 U2 1 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0011-2275 J9 CRYOGENICS JI Cryogenics PY 1994 VL 34 SU ICEC BP 389 EP 392 DI 10.1016/S0011-2275(05)80088-8 PG 4 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA PY678 UT WOS:A1994PY67800090 ER PT J AU CHUI, TCP DAY, P HAHN, I NASH, AE SWANSON, DR NISSEN, JA WILLIAMSON, PR LIPA, JA AF CHUI, TCP DAY, P HAHN, I NASH, AE SWANSON, DR NISSEN, JA WILLIAMSON, PR LIPA, JA TI HIGH-RESOLUTION THERMOMETERS FOR GROUND AND SPACE APPLICATIONS SO CRYOGENICS LA English DT Article; Proceedings Paper CT 15th International Cryogenic Engineering Conference (ICEC 15) CY JUN 07-10, 1994 CL GENOVA, ITALY SP INT CRYOGEN ENGN COMM AB High resolution thermometers with a resolution of 3 x 10(-10) K/root Hz have been flown on a space shuttle for studies of the phase transition of helium near the lambda point (2.1768K). This resolution was found to be degraded by a factor of 2.5 in space due to random heating by cosmic rays. Here we give a report of our program to understand and improve the noise performance for ground applications and to minimize the cosmic ray effects for space applications. C1 STANFORD UNIV,DEPT PHYS,STANFORD,CA 94305. RP CHUI, TCP (reprint author), CALTECH,JET PROP LAB,MAIL STOP T-1702,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 4 TC 1 Z9 1 U1 0 U2 1 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA LINACRE HOUSE JORDAN HILL, OXFORD, OXON, ENGLAND OX2 8DP SN 0011-2275 J9 CRYOGENICS JI Cryogenics PY 1994 VL 34 SU ICEC BP 417 EP 420 DI 10.1016/S0011-2275(05)80095-5 PG 4 WC Thermodynamics; Physics, Applied SC Thermodynamics; Physics GA PY678 UT WOS:A1994PY67800097 ER PT B AU FAWCETT, SC DRUEDING, TW BIFANO, TG AF FAWCETT, SC DRUEDING, TW BIFANO, TG BE Fischer, RE Snmith, WJ TI DEVELOPMENT OF AN ION FIGURING SYSTEM FOR CENTIMETER SCALE OPTICAL-COMPONENTS SO CURRENT DEVELOPMENTS IN OPTICAL DESIGN AND OPTICAL ENGINEERING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Current Developments in Optical Design and Optical Engineering IV CY JUL 27-28, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,OPT FABRICAT BRANCH,HUNTSVILLE,AL 35812. RI Bifano, Thomas/E-6412-2013 OI Bifano, Thomas/0000-0003-4952-2515 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 0-8194-1587-1 J9 P SOC PHOTO-OPT INS PY 1994 VL 2263 BP 164 EP 167 DI 10.1117/12.187998 PG 4 WC Optics SC Optics GA BB65T UT WOS:A1994BB65T00017 ER PT B AU SOKOLOWSKI, W BROWN, K ODONNELL, T JACOBS, S AF SOKOLOWSKI, W BROWN, K ODONNELL, T JACOBS, S BE Fischer, RE Snmith, WJ TI LONG-TERM AND THERMAL-INSTABILITY OF CARBON-CARBON COMPOSITE SO CURRENT DEVELOPMENTS IN OPTICAL DESIGN AND OPTICAL ENGINEERING IV SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Current Developments in Optical Design and Optical Engineering IV CY JUL 27-28, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS DE CARBON CARBON COMPOSITES; THERMAL EXPANSION; THERMAL HYSTERESIS; TEMPORAL INSTABILITY; FABRY-PEROT RESONATOR C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1587-1 J9 P SOC PHOTO-OPT INS PY 1994 VL 2263 BP 177 EP 185 DI 10.1117/12.188027 PG 9 WC Optics SC Optics GA BB65T UT WOS:A1994BB65T00019 ER PT S AU DRUMMOND, M AF DRUMMOND, M BE Backstrom, C Sandewall, E TI ON PRECONDITION ACHIEVEMENT AND THE COMPUTATIONAL ECONOMICS OF AUTOMATIC PLANNING SO CURRENT TRENDS IN AI PLANNING: EWSP '93 - 2ND EUROPEAN WORKSHOP ON PLANNING SE FRONTIERS IN ARTIFICIAL INTELLIGENCE AND APPLICATIONS LA English DT Proceedings Paper CT 2nd European Workshop on Planning (EWSP 93) CY DEC 09-11, 1993 CL VADSTENA, SWEDEN SP SWEDISH RES COUNCIL ENGN SCI, LINKOPING UNIV, DEPT COMP & INFORMAT SCI, GERMAN SOC INFORMAT C1 NASA,AMES RES CTR,RECOM TECHNOL,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I O S PRESS PI AMSTERDAM PA VAN DIEMENSTRAAT 94, 1013 CN AMSTERDAM, NETHERLANDS SN 0922-6389 BN 90-5199-153-3 J9 FR ART INT PY 1994 BP 6 EP 13 PG 8 WC Computer Science, Artificial Intelligence SC Computer Science GA BA32B UT WOS:A1994BA32B00002 ER PT S AU MUSCETTOLA, N AF MUSCETTOLA, N BE Backstrom, C Sandewall, E TI AN EXPERIMENTAL-ANALYSIS OF BOTTLENECK-CENTERED OPPORTUNISTIC SCHEDULING SO CURRENT TRENDS IN AI PLANNING: EWSP '93 - 2ND EUROPEAN WORKSHOP ON PLANNING SE FRONTIERS IN ARTIFICIAL INTELLIGENCE AND APPLICATIONS LA English DT Proceedings Paper CT 2nd European Workshop on Planning (EWSP 93) CY DEC 09-11, 1993 CL VADSTENA, SWEDEN SP SWEDISH RES COUNCIL ENGN SCI, LINKOPING UNIV, DEPT COMP & INFORMAT SCI, GERMAN SOC INFORMAT C1 NASA,AMES RES CTR,RECOM TECHNOL INC,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I O S PRESS PI AMSTERDAM PA VAN DIEMENSTRAAT 94, 1013 CN AMSTERDAM, NETHERLANDS SN 0922-6389 BN 90-5199-153-3 J9 FR ART INT PY 1994 BP 240 EP 253 PG 14 WC Computer Science, Artificial Intelligence SC Computer Science GA BA32B UT WOS:A1994BA32B00019 ER PT J AU ALTERGARTENBERG, R HUCK, FO NARAYANSWAMY, R AF ALTERGARTENBERG, R HUCK, FO NARAYANSWAMY, R TI COMPACT IMAGE REPRESENTATION BY EDGE PRIMITIVES SO CVGIP-GRAPHICAL MODELS AND IMAGE PROCESSING LA English DT Article ID ZERO-CROSSINGS; FINGERPRINTS; VISION C1 OLD DOMINION UNIV,DEPT MATH,NORFOLK,VA 23529. NASA,LANGLEY RES CTR,HAMPTON,VA 23665. SCI & TECHNOL CORP,HAMPTON,VA 23666. NR 22 TC 4 Z9 4 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 1049-9652 J9 CVGIP-GRAPH MODEL IM PD JAN PY 1994 VL 56 IS 1 BP 1 EP 7 PG 7 WC Computer Science, Software Engineering SC Computer Science GA MU386 UT WOS:A1994MU38600001 ER PT S AU BONACUSE, PJ KALLURI, S AF BONACUSE, PJ KALLURI, S BE Mitchell, MR Buck, O TI CYCLIC AXIAL-TORSIONAL DEFORMATION BEHAVIOR OF A COBALT-BASE SUPERALLOY SO CYCLIC DEFORMATION, FRACTURE, AND NONDESTRUCTIVE EVALUATION OF ADVANCED MATERIALS: 2ND VOL SE AMERICAN SOCIETY FOR TESTING AND MATERIALS SPECIAL TECHNICAL PUBLICATION LA English DT Proceedings Paper CT 2nd Symposium on Cyclic Deformation, Fracture, and Nondestructive Evaluation of Advanced Materials CY NOV 16-17, 1992 CL MIAMI, FL SP AMER SOC TESTING & MAT, COMM E8 FATIGUE & FRACTURE DE AXIAL-TORSIONAL LOADING; MULTIAXIALITY; IN-PHASE LOADING; OUT-OF-PHASE LOADING; CYCLIC DEFORMATION; EQUIVALENT STRESS-STRAIN CURVE; COBALT-BASE SUPERALLOY; ELEVATED TEMPERATURE C1 NASA,LEWIS RES CTR,VEHICLE PROP DIRECTORATE,USA,RES LAB,CLEVELAND,OH 44135. NR 0 TC 3 Z9 3 U1 0 U2 0 PU AMERICAN SOCIETY TESTING AND MATERIALS PI W CONSHOHOCKEN PA 100 BARR HARBOR DRIVE, W CONSHOHOCKEN, PA 19428-2959 SN 1071-5827 BN 0-8031-1989-5 J9 AM SOC TEST MATER PY 1994 VL 1184 BP 204 EP 229 DI 10.1520/STP18126S PG 26 WC Materials Science, Characterization & Testing; Materials Science, Composites SC Materials Science GA BC04Y UT WOS:A1994BC04Y00011 ER PT S AU RUSSEL, JM GORDLEY, LL DEAVER, LE THOMPSON, RE PARK, JH AF RUSSEL, JM GORDLEY, LL DEAVER, LE THOMPSON, RE PARK, JH BE Grose, WL Ghazi, A Geller, MA Shepherd, GG TI AN OVERVIEW OF THE HALOGEN OCCULTATION EXPERIMENT (HALOE) AND PRELIMINARY-RESULTS SO EARTHS MIDDLE ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium C2, and the Topical Meetings of the COSPAR Interdisciplinary Scientific Commissions A and C of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS AB The HALOE experiment has observed vertical profiles and pressure versus latitude cross sections of temperature HCl, HF, CH4, H2O, NO, NO2, O-3, and aerosols over the range from 80 degrees S to 80 degrees N. An in-orbit precision of better than 0.3 ppbv has been demonstrated for HCl, HF, NO, NO2 and < 0.6 ppmv for the other channels. Comparisons with correlative measurements at this early stage are encouraging. Nitric oxide has been observed over the range from the upper troposphere to 130-km. Latitudinal cross sections of the long-lived tracers CH4 and HF show clear indications of the effect of the general circulation. C1 G&A TECH SOFTWARE,HAMPTON,VA 23666. RP RUSSEL, JM (reprint author), NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,MAIL STOP 401B,HAMPTON,VA 23681, USA. NR 5 TC 5 Z9 5 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042486-4 J9 ADV SPACE RES PY 1994 VL 14 IS 9 BP 13 EP 20 DI 10.1016/0273-1177(94)90110-4 PG 8 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA49Q UT WOS:A1994BA49Q00002 ER PT S AU GOLDBERG, RA KOPP, E WITT, G AF GOLDBERG, RA KOPP, E WITT, G BE Grose, WL Ghazi, A Geller, MA Shepherd, GG TI NLC-91 - AN EXPERIMENTAL-STUDY OF THE POLAR SUMMER MESOSPHERE SO EARTHS MIDDLE ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium C2, and the Topical Meetings of the COSPAR Interdisciplinary Scientific Commissions A and C of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS ID MST RADAR; MIDDLE ATMOSPHERE; POKER FLAT; STRATOSPHERE; MESOPAUSE; ALASKA; ECHOES AB In the summer of 1991, a major scientific campaign (NLC-91) involving 31 rocket flights was conducted from ESRANGE, Kiruna, Sweden and from Heiss, Island, Russia to investigate the chemical dynamical, and electrodynamical properties of the polar summer mesosphere. The rocket flights were also coordinated with two coherent radar facilities, EISCAT (European Incoherent Scatter Scientific Association) and CUPRI (Cornell University portable Radar Instrument), as well as other ground facilities, to provide continual monitoring of the mesosphere by remote sensing techniques. The primary objectives of the campaign were to study noctilucent clouds (NLC's) and polar mesospheric summer echoes (PMSE's), including their possible relationship to local aerosols and/or small scale turbulence. The program involved scientific participation from eight countries, and promises to produce many results during the next few years. This overview considers the scientific campaign and briefly discusses preliminary results. These results are provided in more detail in papers following this overview. C1 UNIV BERN,INST PHYS,BERN,SWITZERLAND. UNIV STOCKHOLM,ARRHENIUS LAB,S-10691 STOCKHOLM,SWEDEN. RP GOLDBERG, RA (reprint author), NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,CODE 690,GREENBELT,MD 20771, USA. RI Goldberg, Richard /E-1881-2012 NR 16 TC 4 Z9 4 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042486-4 J9 ADV SPACE RES PY 1994 VL 14 IS 9 BP 113 EP 121 DI 10.1016/0273-1177(94)90124-4 PG 9 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA49Q UT WOS:A1994BA49Q00015 ER PT S AU KEATING, GM BRASSEUR, GP CHIOU, LS HSU, NC AF KEATING, GM BRASSEUR, GP CHIOU, LS HSU, NC BE Grose, WL Ghazi, A Geller, MA Shepherd, GG TI ESTIMATING 11-YEAR SOLAR UV VARIATIONS USING 27-DAY RESPONSE AS A GUIDE TO ISOLATE TRENDS IN TOTAL COLUMN OZONE SO EARTHS MIDDLE ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium C2, and the Topical Meetings of the COSPAR Interdisciplinary Scientific Commissions A and C of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS ID ULTRAVIOLET VARIATIONS; MIDDLE ATMOSPHERE AB The total column ozone response to 11-year solar ultraviolet (UV) variations is estimated here from the observed response to 27-day solar variations adjusted for the theoretical difference between the 27-day response and 11-year response. The estimate is tested by comparing two data sets where long-term drifts have been removed, the Nimbus 7 TOMS Version 6 total column ozone and the 280 nm core-to-wing ratio (a proxy for solar UV variations). The 365-day running means of data area-weighted between 40 degrees N to 40 degrees S latitude give a 1.9% ozone variation related to the 11-year solar cycle compared with the estimate of 1.8%. Estimates of linear trends were reduced by a factor of 2 by including solar effects. The standard deviation from the empirical model was reduced from 1.0 to 0.6 Dobson Units, by including the quasi-biennial oscillation (QBO), but the QBO did not significantly alter trend estimates. Both the ozone responses to 27-day and 11-year solar variations were considerably stronger than predicted by a 2-D theoretical model. C1 NATL CTR ATMOSPHER RES,BOULDER,CO 80307. SCI APPLICAT INT CORP,HAMPTON,VA 23666. RP KEATING, GM (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23681, USA. RI Hsu, N. Christina/H-3420-2013 NR 16 TC 8 Z9 8 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042486-4 J9 ADV SPACE RES PY 1994 VL 14 IS 9 BP 199 EP 209 DI 10.1016/0273-1177(94)90137-6 PG 11 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA49Q UT WOS:A1994BA49Q00028 ER PT S AU TORR, MR AF TORR, MR BE Grose, WL Ghazi, A Geller, MA Shepherd, GG TI THE ATLAS-1 MISSION SO EARTHS MIDDLE ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium C2, and the Topical Meetings of the COSPAR Interdisciplinary Scientific Commissions A and C of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS AB ATLAS-1 was launched on March 24, 1992, carrying an international payload of 14 investigations, and conducted a successful series of experiments and observations over the subsequent 9 days. The objectives included: measuring the solar irradiance at high precision; remote sensing of the composition of the stratosphere, mesosphere, and thermosphere using techniques for wavelengths from 300 Angstrom to 5 mm; and inducing auroras by means of 1.2 amp electron beams. A subset of these instruments will subsequently be flown in a series of shuttle missions at roughly 1-year intervals over an 11-year solar cycle. The frequent recalibration opportunities afforded by such a program allows the transfer of calibrations to longer duration orbiting observatories. The ATLAS-1 mission occurred at the same time as the UARS, TIROS-N, and ERB satellites were in operation, and correlative measurements were conducted with these. In all, the mission was most successful in achieving its objectives and a unique and important database was acquired, with many scientific firsts accomplished. This paper provides the mission overview for the series of papers that follow. RP TORR, MR (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812, USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042486-4 J9 ADV SPACE RES PY 1994 VL 14 IS 9 BP 243 EP 251 DI 10.1016/0273-1177(94)90144-9 PG 9 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA49Q UT WOS:A1994BA49Q00035 ER PT S AU CROMMELYNCK, D DOMINGO, V BARKSTROM, B LEE, RB DONALDSON, J TELLJOHANN, U WARREN, L FICHOT, A AF CROMMELYNCK, D DOMINGO, V BARKSTROM, B LEE, RB DONALDSON, J TELLJOHANN, U WARREN, L FICHOT, A BE Grose, WL Ghazi, A Geller, MA Shepherd, GG TI PRELIMINARY-RESULTS OF SOLAR-CONSTANT OBSERVATIONS WITH THE SOLCON EXPERIMENT ON ATLAS-1 SO EARTHS MIDDLE ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium C2, and the Topical Meetings of the COSPAR Interdisciplinary Scientific Commissions A and C of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS AB A brief description is given of the SOLCON experiment on ATLAS 1, its scientific and technical objectives, as well as its measurement principle and its on board chronology of operations. A preliminary value of the solar constant during the third solar operation of the mission is also provided. C1 EUROPEAN SPACE AGCY,DEPT SPACE SCI,2200 NOORDWIJK AAN ZEE,NETHERLANDS. NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23665. LOCKHEED ENGN & SCI CO,LANGLEY RES CTR,HAMPTON,VA 23666. RP CROMMELYNCK, D (reprint author), ROYAL METEOROL INST BELGIUM,DEPT AEROL,3 AVE CIRCULAIRE,B-1180 BRUSSELS,BELGIUM. NR 6 TC 5 Z9 5 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042486-4 J9 ADV SPACE RES PY 1994 VL 14 IS 9 BP 253 EP 262 DI 10.1016/0273-1177(94)90145-7 PG 10 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA49Q UT WOS:A1994BA49Q00036 ER PT S AU BURCH, JL ROBERTS, WT TAYLOR, WWL KAWASHIMA, N MARSHALL, JA MOSES, SL NEUBERT, T MENDE, SB CHOUEIRI, EY AF BURCH, JL ROBERTS, WT TAYLOR, WWL KAWASHIMA, N MARSHALL, JA MOSES, SL NEUBERT, T MENDE, SB CHOUEIRI, EY BE Grose, WL Ghazi, A Geller, MA Shepherd, GG TI SPACE EXPERIMENTS WITH PARTICLE ACCELERATORS - SEPAC SO EARTHS MIDDLE ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium C2, and the Topical Meetings of the COSPAR Interdisciplinary Scientific Commissions A and C of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS AB The Space Experiments with Particle Accelerators (SEPAC), which flew on the ATLAS 1 mission, used new techniques to study natural phenomena in the Earth's upper atmosphere, ionosphere and magnetosphere by introducing energetic perturbations into the system from a high power electron beam with known characteristics. Properties of auroras were studied by directing the electron beam into the upper atmosphere while making measurements of optical emissions. Studies were also performed of the critical ionization velocity phenomenon. C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NICHOLS RES CORP,ARLINGTON,VA 22209. ISAS,TOKYO,JAPAN. UNIV MICHIGAN,ANN ARBOR,MI 48109. LOCKHEED PALO ALTO RES LABS,PALO ALTO,CA 94304. PRINCETON UNIV,PRINCETON,NJ 08544. RP BURCH, JL (reprint author), SW RES INST,6220 CULEBRA RD,SAN ANTONIO,TX 78228, USA. NR 20 TC 3 Z9 3 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042486-4 J9 ADV SPACE RES PY 1994 VL 14 IS 9 BP 263 EP 270 DI 10.1016/0273-1177(94)90146-5 PG 8 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA49Q UT WOS:A1994BA49Q00037 ER PT S AU TORR, DG TORR, MR MORGAN, MF OWENS, JK FENNELLY, JA RICHARDS, PG CHANG, T MELENDEZALVIRA, DJ AF TORR, DG TORR, MR MORGAN, MF OWENS, JK FENNELLY, JA RICHARDS, PG CHANG, T MELENDEZALVIRA, DJ BE Grose, WL Ghazi, A Geller, MA Shepherd, GG TI GLOBAL OBSERVATIONS AND MODELING OF THE IONOSPHERE, THERMOSPHERE AND MESOSPHERE SO EARTHS MIDDLE ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Symposium C2, and the Topical Meetings of the COSPAR Interdisciplinary Scientific Commissions A and C of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS AB The Imaging Spectrometric Observatory (ISO) flown on the ATLAS 1 mission between 24 Mar 1992 and 2 Apr 1992, acquired a database designed to study several outstanding problems in the ionosphere, thermosphere and mesosphere. In this paper we discuss the goals and preliminary results from three of these studies. To support these studies, the ISO acquired a database of: 1) emissions for the retrieval of neutral and ion densities to test global models of the ionosphere and thermosphere; 2) emissions for the retrieval of mesospheric composition of major and minor constituents needed to test models of the oxygen-hydrogen photochemistry, 3) emissions of the bands of the metastable states of O-2, and O(S-1) produced by three-body recombination of O in the mesosphere. C1 UNIV ALABAMA,DEPT COMP SCI,HUNTSVILLE,AL 35899. UNIV ALABAMA,CTR SPACE PLASMA & AERON RES,HUNTSVILLE,AL 35899. NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. RP TORR, DG (reprint author), UNIV ALABAMA,DEPT PHYS,OPT AERON LAB,HUNTSVILLE,AL 35899, USA. RI Morgan, Frank/C-5246-2016 OI Morgan, Frank/0000-0003-3166-7732 NR 6 TC 0 Z9 0 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042486-4 J9 ADV SPACE RES PY 1994 VL 14 IS 9 BP 271 EP 276 DI 10.1016/0273-1177(94)90147-3 PG 6 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA49Q UT WOS:A1994BA49Q00038 ER PT J AU Peteet, DM Mann, DH AF Peteet, Dorothy M. Mann, Daniel H. TI Late-glacial vegetational, tephra, and climatic history of southwestern Kodiak Island, Alaska SO ECOSCIENCE LA English DT Article DE Kodiak Island; late-glacial; palynology; macrofossils; Younger Dryas; paleoclimate ID EASTERN NORTH-AMERICA; ALEUTIAN ISLANDS; NORTHEASTERN USA; LATE PLEISTOCENE; POLLEN; SEDIMENTS; PACIFIC; RECORD; EVENT; DEGLACIATION AB Late-glacial vegetational, tephra, and climatic history of western Kodiak Island is developed based upon detailed palynological, macrofossil, and AMS C-14 stratigraphy. A series of distinctive Purple, White, and Grey tephras allows correlation amongst several sections along the southwestern Kodiak coastline. Changes in loss-on-ignition within these sections support our interpretation of climatic change since deglaciation. The macrofossil component of the sedimentary record provides insight for late-glacial plant diversity. Earliest vegetation after glacial recession 14 000 years BP is composed of a diverse array of moist herbaceous species, along with a dominance of Empetrum nigrum (heath). As climate became warmer and moister after 13 000 BP, Polypodiaceae (ferns) spread over the landscape. A dramatic reversal in vegetation and climate to colder, drier conditions is indicated from 10 800 to 10 000 years BP, which we term the "Fern Gap". We interpret this oscillation as a high-latitude Pacific expression of the Younger Dryas event, well-known from Greenland and continental regions surrounding the North Atlantic. The subsequent Holocene warming at 10 000 years BP is quite abrupt, as shown by the section lithostratigraphy, palynological and macrofossil records, and percent loss on ignition. This late-glacial series of events indicates a high correlation between paleoclimate on Kodiak Island and the North Atlantic region, suggesting comparable climatic forcing in both regions. C1 [Peteet, Dorothy M.] NASA, Goddard Inst Space Studies, New York, NY 10025 USA. [Peteet, Dorothy M.] Lamont Doherty Earth Observ, Palisades, NY 10964 USA. [Mann, Daniel H.] Univ Alaska, Dept Geol & Geophys, Fairbanks, AK 99775 USA. RP Peteet, DM (reprint author), NASA, Goddard Inst Space Studies, 2880 Broadway, New York, NY 10025 USA. EM peteet@ldgo.columbia.edu; ftpah@aurora.alaska.edu FU NASA [IDP-88-075]; US DOE National Institute for Global Environmental Change (NIGEC) through the NIGEC Northeast Regional Center at Harvard University [DE-FC03-90ER61010] FX We thank J. Bubier, B. Engstrom, F. Haering, L. Plug, M. Shephard, and G. Stone III for enthusiastic field assistance. R. Ruoss provided logistical aid and airborne insights. Personnel of the Kodiak National Wildlife Refuge gave advice and support. Thanks are due to E. Stock for processing the pollen samples and LOI measurements. Helpful comments on the manuscript were made by L. Cwynar, C. Heusser, and R. Mathewes. Financial support included funding from NASA Interdisciplinary Grant IDP-88-075 and Director's Discretionary Funds, the US DOE National Institute for Global Environmental Change (NIGEC) through the NIGEC Northeast Regional Center at Harvard University (Cooperative agreement DE-FC03-90ER61010), and D.H.M.'s work on the assessment of the Exxon Valdez Oil Spill. This is Lamont-Doherty Earth Observatory contribution number 5283. NR 46 TC 54 Z9 54 U1 0 U2 6 PU UNIVERSITE LAVAL PI ST FOY PA PAVILLON CHARLES-EUGENE MARCHAND, LOCAL 0166, ST FOY, QUEBEC G1K 7P4, CANADA SN 1195-6860 J9 ECOSCIENCE JI Ecoscience PY 1994 VL 1 IS 3 BP 255 EP 267 PG 13 WC Ecology SC Environmental Sciences & Ecology GA V19XO UT WOS:000208105300008 ER PT S AU GILMOUR, S JEN, AKY MARDER, SR NEISSINK, AJ PERRY, JW SKINDHOJ, J CAI, YM AF GILMOUR, S JEN, AKY MARDER, SR NEISSINK, AJ PERRY, JW SKINDHOJ, J CAI, YM BE Garito, AF Jen, AKY Lee, CYC Dalton, LR TI 2ND-ORDER NONLINEAR-OPTICAL PROPERTIES OF THIOPHENE CONTAINING CHROMOPHORES WITH EXTENDED CONJUGATION SO ELECTRICAL, OPTICAL, AND MAGNETIC PROPERTIES OF ORGANIC SOLID STATE MATERIALS SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium Q: Electrical, Optical, and Magnetic Properties of Organic Solid State Materials CY NOV 29-DEC 03, 1993 CL BOSTON, MA SP MAT RES SOC, ADV RES PROJECTS AGCY C1 JET PROP LAB,PASADENA,CA 91109. RI Perry, Joseph/B-7191-2011 OI Perry, Joseph/0000-0003-1101-7337 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 0272-9172 BN 1-55899-227-8 J9 MATER RES SOC SYMP P PY 1994 VL 328 BP 485 EP 490 PG 6 WC Chemistry, Physical; Physics, Condensed Matter; Polymer Science SC Chemistry; Physics; Polymer Science GA BA28Z UT WOS:A1994BA28Z00061 ER PT J AU SHIVELY, DG BAILEY, MC COCKRELL, CR DESHPANDE, MD AF SHIVELY, DG BAILEY, MC COCKRELL, CR DESHPANDE, MD TI SCATTERING FROM MICROSTRIP PATCH ANTENNAS USING SUBDOMAIN BASIS FUNCTIONS SO ELECTROMAGNETICS LA English DT Article AB The scattering properties of microstrip patch antennas are examined with a spectral domain moment method approach. The Galerkin solution presented uses subdomain basis functions to model the current distribution on the patch so that a space varying surface resistance on the patch may be included. The subdomain approach is also used to model circular and triangular microstrip patches by approximating the patch boundary with a rectangular grid. Both calculated and measured results are presented fora few representative cases. RP SHIVELY, DG (reprint author), NASA,LANGLEY RES CTR,JOINT RES PROGRAMS OFF,HAMPTON,VA 23681, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU HEMISPHERE PUBL CORP PI BRISTOL PA 1900 FROST ROAD, SUITE 101, BRISTOL, PA 19007-1598 SN 0272-6343 J9 ELECTROMAGNETICS JI Electromagnetics PD JAN-MAR PY 1994 VL 14 IS 1 BP 1 EP 18 DI 10.1080/02726349408908366 PG 18 WC Engineering, Electrical & Electronic SC Engineering GA MR476 UT WOS:A1994MR47600002 ER PT B AU HUO, WM SHEEHY, JA AF HUO, WM SHEEHY, JA BE Ehrhardt, H Morgan, LA TI THEORETICAL-STUDY OF ELECTRON-SCATTERING BY SMALL CLUSTERS AND ADSORBATES SO ELECTRON COLLISIONS WITH MOLECULES, CLUSTERS AND SURFACES SE PHYSICS OF ATOMS AND MOLECULES LA English DT Proceedings Paper CT Biennial International Symposium on Electron Collisions with Molecules, Clusters and Surfaces, at the XVIII International Conference on the Physics of Electronic and Atomic Collisions CY JUL 29-30, 1993 CL UNIV LONDON, LONDON, ENGLAND HO UNIV LONDON C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-306-44706-1 J9 PHYS ATOMS PY 1994 BP 171 EP 182 PG 12 WC Physics, Atomic, Molecular & Chemical SC Physics GA BA89S UT WOS:A1994BA89S00014 ER PT B AU GARG, A DEVINCENT, SM ELLIS, DL AF GARG, A DEVINCENT, SM ELLIS, DL BE Jouffrey, B Colliex, C TI Interfacial microstructure of graphite/Cu-Cr composites SO ELECTRON MICROSCOPY 1994, VOLS 2A AND 2B: APPLICATIONS IN MATERIALS SCIENCES LA English DT Proceedings Paper CT 13th International Congress on Electron Microscopy CY JUL 17-22, 1994 CL PARIS, FRANCE SP Int Federat Soc Electron Microscopy, Minist Enseignement Super & Recher, Acad Sci, Minist Affaires Etrangeres, European Union, CNRS, INSERM, CEA C1 NASA,LEWIS RES CTR,NRC,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDITIONS PHYSIQUE PI LES ULIS PA AVENUE DU HOGGAR, ZONE INDUSTRIELLE COURTABOEUF, BP112 91944 LES ULIS, FRANCE BN 2-86883-226-1 PY 1994 BP 285 EP 286 PG 2 WC Materials Science, Multidisciplinary; Microscopy SC Materials Science; Microscopy GA BE09Y UT WOS:A1994BE09Y00139 ER PT J AU SEKI, MP SOMERTON, DA AF SEKI, MP SOMERTON, DA TI FEEDING ECOLOGY AND DAILY RATION OF THE PELAGIC ARMORHEAD, PSEUDOPENTACEROS-WHEELERI AT SOUTHEAST HANCOCK SEAMOUNT SO ENVIRONMENTAL BIOLOGY OF FISHES LA English DT Article DE DIET COMPOSITION; FEEDING PERIODICITY; FIELD DATA; DAILY CONSUMPTION; FISH ID FOOD-CONSUMPTION; FISH; PENTACEROTIDAE; DIETS AB The unusual life history of pelagic armorhead, Pseudopentaceros wheeleri, includes occupation of epipelagic subarctic and transitional waters of the northeast Pacific Ocean and Gulf of Alaska as subadults and subsequent recruitment to the southern Emperor and northern Hawaiian Ridge (SE-NHR) seamounts in the central North Pacific Ocean where they assume a demersal existence and begin maturation as adults. Feeding ecology and daily ration were examined in pelagic armorhead during field studies conducted at Southeast Hancock Seamont (29 degrees 48' N, 179 degrees 04' E) in the SE-NHR seamounts. A total of 1133 stomachs collected during June-July 1985, January 1988, and July 1988 were examined for contents; only 19.7% contained food items. The diet consisted of pelagic tunicates and other micronektonic animals that are associated with the vertically migrating sonic scattering layer that is advected over the seamount from the adjacent oceanic environment. Peak feeding occurred in the early morning on migrating organisms likely frapped by the expanse of the seamount summit during the morning descent. Newly recruited armorhead had lower feeding rates than older, previously recruited fish. Estimates of daily ration for previously recruited armorhead were 1.17 g (0.26% of body weight) in the summer of 1985 and 12.87 g (2.86% of body weight) in the summer of 1988. Since estimated values for the evacuation coefficient and the duration of the daily feeding period did not differ between sampling periods, the increase in daily ration was due to an increase in feeding rate. The proportion of the diet composed of pelagic tunicates was also higher in 1988. RP SEKI, MP (reprint author), NOAA,NATL MARINE FISHERIES SERV,SW FISHERIES SCI CTR,HONOLULU LAB,2570 DOLE ST,HONOLULU,HI 96822, USA. NR 36 TC 11 Z9 11 U1 1 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0378-1909 J9 ENVIRON BIOL FISH JI Environ. Biol. Fishes PD JAN PY 1994 VL 39 IS 1 BP 73 EP 84 DI 10.1007/BF00004758 PG 12 WC Ecology; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA MV618 UT WOS:A1994MV61800008 ER PT B AU CAMPBELL, JW STEPHENS, HB AF CAMPBELL, JW STEPHENS, HB BE Siegmund, OHW Vallerga, JV TI A NEW, ADVANCED FOURIER TELESCOPE FOR HARD X-RAY-IMAGING OF THE SUN SO EUV, X-RAY, AND GAMMA-RAY INSTRUMENTATION FOR ASTRONOMY V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V CY JUL 27-28, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 0-8194-1604-5 J9 P SOC PHOTO-OPT INS PY 1994 VL 2280 BP 2 EP 10 DI 10.1117/12.186802 PG 9 WC Astronomy & Astrophysics; Instruments & Instrumentation SC Astronomy & Astrophysics; Instruments & Instrumentation GA BB57R UT WOS:A1994BB57R00001 ER PT B AU RAMSEY, BD KOLODZIEJCZAK, JJ FULTON, MA MIR, JA WEISSKOPF, MC AF RAMSEY, BD KOLODZIEJCZAK, JJ FULTON, MA MIR, JA WEISSKOPF, MC BE Siegmund, OHW Vallerga, JV TI THE DEVELOPMENT OF MICROSTRIP PROPORTIONAL-COUNTERS FOR X-RAY ASTRONOMY SO EUV, X-RAY, AND GAMMA-RAY INSTRUMENTATION FOR ASTRONOMY V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V CY JUL 27-28, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS DE X-RAY; MICROSTRIP PROPORTIONAL COUNTER C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. 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 0-8194-1604-5 J9 P SOC PHOTO-OPT INS PY 1994 VL 2280 BP 110 EP 118 DI 10.1117/12.186804 PG 9 WC Astronomy & Astrophysics; Instruments & Instrumentation SC Astronomy & Astrophysics; Instruments & Instrumentation GA BB57R UT WOS:A1994BB57R00010 ER PT B AU PIMPERL, MM RAMSEY, BD AUSTIN, RA MINAMITANI, T WEISSKOPF, MC GRINDLAY, JE LUM, KSK MANANDHAR, RP AF PIMPERL, MM RAMSEY, BD AUSTIN, RA MINAMITANI, T WEISSKOPF, MC GRINDLAY, JE LUM, KSK MANANDHAR, RP BE Siegmund, OHW Vallerga, JV TI DEVELOPMENT OF A HYBRID GAS DETECTOR PHOSWICH FOR HARD X-RAY ASTRONOMY SO EUV, X-RAY, AND GAMMA-RAY INSTRUMENTATION FOR ASTRONOMY V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V CY JUL 27-28, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS DE X-RAY ASTRONOMY; DETECTOR; PROPORTIONAL COUNTER; SCINTILLATOR C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. 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 0-8194-1604-5 J9 P SOC PHOTO-OPT INS PY 1994 VL 2280 BP 119 EP 126 DI 10.1117/12.186805 PG 8 WC Astronomy & Astrophysics; Instruments & Instrumentation SC Astronomy & Astrophysics; Instruments & Instrumentation GA BB57R UT WOS:A1994BB57R00011 ER PT B AU YOUNGEN, J WEISSKOPF, MC DIETZ, KL AUSTIN, RA ODELL, SL RAMSEY, BD TENNANT, A AF YOUNGEN, J WEISSKOPF, MC DIETZ, KL AUSTIN, RA ODELL, SL RAMSEY, BD TENNANT, A BE Siegmund, OHW Vallerga, JV TI THE IMPORTANCE OF ELECTRON TRACKING IN UNDERSTANDING THE RESPONSE OF PROPORTIONAL-COUNTERS SO EUV, X-RAY, AND GAMMA-RAY INSTRUMENTATION FOR ASTRONOMY V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on EUV, X-Ray, and Gamma-Ray Instrumentation for Astronomy V CY JUL 27-28, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS DE X-RAYS; PROPORTIONAL COUNTERS; FINITE PATH OF ELECTRONS C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. 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 0-8194-1604-5 J9 P SOC PHOTO-OPT INS PY 1994 VL 2280 BP 145 EP 153 DI 10.1117/12.186808 PG 9 WC Astronomy & Astrophysics; Instruments & Instrumentation SC Astronomy & Astrophysics; Instruments & Instrumentation GA BB57R UT WOS:A1994BB57R00014 ER PT S AU WHITE, NE AF WHITE, NE BE Holt, SS Day, CS TI THE GALACTIC DISTRIBUTION OF BLACK-HOLES IN X-RAY BINARIES SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. RI White, Nicholas/B-6428-2012 OI White, Nicholas/0000-0003-3853-3462 NR 0 TC 4 Z9 4 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 53 EP 60 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00005 ER PT S AU CHEN, W SHRADER, C LIVIO, M AF CHEN, W SHRADER, C LIVIO, M BE Holt, SS Day, CS TI A SYSTEMATIC AND STATISTICAL STUDY OF THE X-RAY AND OPTICAL LIGHT CURVES OF X-RAY NOVAE SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 1 Z9 1 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 67 EP 70 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00007 ER PT S AU MUKAI, K AF MUKAI, K BE Holt, SS Day, CS TI APPLICATION OF MAGNETIC BRAKING THEORIES TO BLACK-HOLE BINARIES SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 3 Z9 3 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 79 EP 82 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00010 ER PT S AU SHRADER, CR WAGNER, RM HJELLMING, RM HAN, XH STARRFIELD, SG AF SHRADER, CR WAGNER, RM HJELLMING, RM HAN, XH STARRFIELD, SG BE Holt, SS Day, CS TI MULTIWAVELENGTH STUDY OF THE X-RAY NOVA GRO J0422+32 SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GSFC,CSC,HIGH ENERGY ASTROPHYS LAB,WASHINGTON,DC 20546. 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 95 EP 98 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00014 ER PT S AU PACIESAS, WS BRIGGS, MS PENDLETON, GN HARMON, BA WILSON, CA ZHANG, SN FISHMAN, GJ AF PACIESAS, WS BRIGGS, MS PENDLETON, GN HARMON, BA WILSON, CA ZHANG, SN FISHMAN, GJ BE Holt, SS Day, CS TI BATSE OBSERVATIONS OF NOVA-MUSCAE 1991 SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 115 EP 118 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00019 ER PT S AU SCHLEGEL, EM AF SCHLEGEL, EM BE Holt, SS Day, CS TI A BROAD-BAND X-RAY TELESCOPE OBSERVATION OF THE BLACK-HOLE CANDIDATE LMC X-1 SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 119 EP 122 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00020 ER PT S AU EBISAWA, K AF EBISAWA, K BE Holt, SS Day, CS TI X-RAY-ENERGY SPECTRA FROM ACCRETION DISKS IN BLACK-HOLE CANDIDATES SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. NR 0 TC 3 Z9 3 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 143 EP 154 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00025 ER PT S AU KALLMAN, TR AF KALLMAN, TR BE Holt, SS Day, CS TI SPECTRAL DIAGNOSTICS AND ACCRETION DISK CORONA REPROCESSING IN X-RAY BINARIES SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 155 EP 165 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00026 ER PT S AU WILSON, CA HARMON, BA WILSON, RB FISHMAN, GJ FINGER, MH AF WILSON, CA HARMON, BA WILSON, RB FISHMAN, GJ FINGER, MH BE Holt, SS Day, CS TI BATSE OBSERVATION OF GS 0834-430 SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 1 Z9 1 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 259 EP 262 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00045 ER PT S AU WOLINSKI, KG DOLAN, JF BOYD, PT ELLIOT, JL NELSON, MJ PERCIVAL, JW TOWNSLEY, LC VANCITTERS, GW AF WOLINSKI, KG DOLAN, JF BOYD, PT ELLIOT, JL NELSON, MJ PERCIVAL, JW TOWNSLEY, LC VANCITTERS, GW BE Holt, SS Day, CS TI UV POLARIMETRY OF THE X-RAY BINARY-SYSTEMS 4U1700-37, VELA XR-1, AND CYGNUS XR-1 SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 367 EP 370 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00065 ER PT S AU HARDING, AK AF HARDING, AK BE Holt, SS Day, CS TI EMISSION PROCESSES IN X-RAY PULSARS SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Harding, Alice/D-3160-2012 NR 0 TC 4 Z9 4 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 429 EP 438 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00077 ER PT S AU WILSON, RB HARMON, BA FISHMAN, GJ FINGER, MH STOLLBERG, MT PENDLETON, GN BRIGGS, M PRINCE, TA BILDSTEN, L CHAKRABARTY, D RUBIN, BC ZHANG, NS AF WILSON, RB HARMON, BA FISHMAN, GJ FINGER, MH STOLLBERG, MT PENDLETON, GN BRIGGS, M PRINCE, TA BILDSTEN, L CHAKRABARTY, D RUBIN, BC ZHANG, NS BE Holt, SS Day, CS TI DISCOVERY OF THE HARD X-RAY PULSAR GRO J1008-57 BY BATSE SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 2 Z9 2 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 451 EP 454 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00079 ER PT S AU RUBIN, BC FINGER, MH WILSON, RB FISHMAN, GJ MEEGAN, CA PACIESAS, WS PRINCE, T CHIU, J CHAKRABARTY, D AF RUBIN, BC FINGER, MH WILSON, RB FISHMAN, GJ MEEGAN, CA PACIESAS, WS PRINCE, T CHIU, J CHAKRABARTY, D BE Holt, SS Day, CS TI BATSE OBSERVATIONS OF 4U1538-52 - A 530-SECOND PULSAR SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,MSFC,USRA,WASHINGTON,DC 20546. NR 0 TC 3 Z9 3 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 455 EP 458 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00080 ER PT S AU WILSON, RB FINGER, MH PENDLETON, GN BRIGGS, M BILDSTEN, L AF WILSON, RB FINGER, MH PENDLETON, GN BRIGGS, M BILDSTEN, L BE Holt, SS Day, CS TI OBSERVATION OF A CORRELATION BETWEEN MAIN-ON INTENSITY AND SPIN BEHAVIOR IN HER X-1 SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 4 Z9 4 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 475 EP 478 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00085 ER PT S AU SMALE, AP AF SMALE, AP BE Holt, SS Day, CS TI PRECESSION AND LONG-TERM CYCLIC BEHAVIOR SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. NR 0 TC 2 Z9 2 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 525 EP 534 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00095 ER PT S AU ORLANDINI, M BOLDT, E AF ORLANDINI, M BOLDT, E BE Holt, SS Day, CS TI MICROSECOND TEMPORAL STRUCTURE FROM X-RAY BINARY PULSAR - OBSERVABILITY WITH XTE SO EVOLUTION OF X-RAY BINARIES SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 4th Annual October Astrophysics Conference on the Evolution of X-Ray Binaries CY OCT, 1993 CL COLLEGE PK, MD SP UNIV MARYLAND, GODDARD SPACE FLIGHT CTR C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. RI Orlandini, Mauro/H-3114-2014 OI Orlandini, Mauro/0000-0003-0946-3151 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 1-56396-329-9 J9 AIP CONF PROC PY 1994 IS 308 BP 557 EP 560 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12B UT WOS:A1994BB12B00102 ER PT J AU ABDULAZIZ, A ALKASAB, KA AF ABDULAZIZ, A ALKASAB, KA TI PERFORMANCE OF SERPENTINE PASSAGES IN THE COOLING SYSTEM OF A PHOSPHORIC-ACID FUEL-CELL STACK SO EXPERIMENTAL THERMAL AND FLUID SCIENCE LA English DT Article DE FUEL CELLS; SERPENTINE PASSAGES COOLING SYSTEMS; HEAT TRANSFER COEFFICIENTS AB An experimental rig was designed and constructed to simulate the operating conditions prevailing in a phosphoric acid fuel cell stack. The rig measures the heat transfer coefficient, the thermal contact resistance, and the fuel cell plate temperature. A serpentine cooling plate configuration was used to investigate cooling system performance and efficiency. Oil and water were used as cooling media. Measurements for coolant flow rates ranging from 16 to 88 kg/h and stack clamping pressures (interface pressures) from 0 to 3445 kPa were investigated. The experimental results were used to derive mathematical relations for the overall heat transfer coefficient as a function of the stack clamping pressure and Reynolds number for the two coolants. These relations were incorporated into a previously developed computer program to predict fuel cell plate temperature distributions and performance of the stack cooling system. The experimental results showed good agreement with the computer simulation. C1 CLEVELAND STATE UNIV,DEPT MECH ENGN,CLEVELAND,OH 44115. RP ABDULAZIZ, A (reprint author), SVERDRUP TECHNOL INC,NASA,LEWIS RES CTR GRP,21000 BROOK PK RD,MAIL STOP 49-7,CLEVELAND,OH 44135, USA. NR 16 TC 4 Z9 4 U1 0 U2 0 PU ELSEVIER SCIENCE 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 JAN PY 1994 VL 8 IS 1 BP 101 EP 111 DI 10.1016/0894-1777(94)90077-9 PG 11 WC Thermodynamics; Engineering, Mechanical; Physics, Fluids & Plasmas SC Thermodynamics; Engineering; Physics GA MU765 UT WOS:A1994MU76500011 ER PT B AU MCKAY, MF SULLIVAN, KD WILLIS, KJ AF MCKAY, MF SULLIVAN, KD WILLIS, KJ GP SOC TECH COMMUN TI HOW WOULD YOU LIKE TO HAVE 150,000 SPACE-SHUTTLE PHOTOS OF THE EARTH AT YOUR FINGERTIPS SO EXPLORE COMMUNICATION: 41ST ANNUAL CONFERENCE, SOCIETY FOR TECHNICAL COMMUNICATION, 1994 PROCEEDINGS LA English DT Proceedings Paper CT 41st Annual Conference of the Society-for-Technical-Communication: Explore Communication CY MAY 15-18, 1994 CL MINNEAPOLIS, MN SP SOC TECH COMMUN C1 NASA,LYNDON B JOHNSON SPACE CTR,IMAGE ACCESS & MANAGEMENT SYST,HOUSTON,TX 77058. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC TECHNICAL COMMUNICATION PI ARLINGTON PA 901 N STUART ST, SUITE 904, ARLINGTON, VA 22203-1854 BN 0-914548-79-4 PY 1994 BP 478 EP 478 PG 1 WC Communication; Education & Educational Research; Management SC Communication; Education & Educational Research; Business & Economics GA BB40C UT WOS:A1994BB40C00223 ER PT B AU SOTOMAYOR, JL BEHEIM, G AF SOTOMAYOR, JL BEHEIM, G BE DePaula, RP TI LASER-ANNEALED FABRY-PEROT FIBEROPTIC TEMPERATURE SENSOR SO FIBER OPTIC AND LASER SENSORS XI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Fiber Optic and Laser Sensors XI CY SEP 07-08, 1993 CL BOSTON, MA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS, AUTOMATED IMAGING ASSOC, CARNEGIE MELLON UNIV, CTR EXCELLENCE OPT DATA PROC, UNIV CONNECTICUT, ADV TECHNOL CET PRECIS MFG, INT SOC PHOTOGRAMMETRY & REMOTE SENSING C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-8194-1335-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2070 BP 440 EP 446 DI 10.1117/12.169926 PG 7 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BA45K UT WOS:A1994BA45K00046 ER PT B AU CHO, YC BUALAT, MG AF CHO, YC BUALAT, MG BE DePaula, RP TI FIBER OPTIC INTERFEROMETRIC SENSORS FOR AEROACOUSTIC MEASUREMENTS - ANECHOIC CHAMBER TESTS SO FIBER OPTIC AND LASER SENSORS XII SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Fiber Optic and Laser Sensors XII CY JUL 25-27, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-8194-1616-9 J9 P SOC PHOTO-OPT INS PY 1994 VL 2292 BP 73 EP 82 DI 10.1117/12.191821 PG 10 WC Remote Sensing; Optics SC Remote Sensing; Optics GA BB88M UT WOS:A1994BB88M00009 ER PT B AU GUTIERREZ, RC SWIFT, GM DUBOVITSKY, S BARTMAN, RK BARNES, CE DORSKY, L AF GUTIERREZ, RC SWIFT, GM DUBOVITSKY, S BARTMAN, RK BARNES, CE DORSKY, L BE Yuce, HH Paul, DK Greenwell, RA TI POLARIZATION-DEPENDENT EFFECTS OF RADIATION ON WAVELENGTH-DIVISION MULTIPLEXERS SO FIBER OPTIC MATERIALS AND COMPONENTS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Fiber Optic Materials and Components CY JUL 28-29, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS DE SPACE RADIATION; FUSED BICONICAL TAPER; WAVELENGTH DIVISION MULTIPLEXER; WDM; POLARIZATION; ISOLATION C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1614-2 J9 P SOC PHOTO-OPT INS PY 1994 VL 2290 BP 263 EP 277 DI 10.1117/12.187425 PG 15 WC Optics SC Optics GA BB65V UT WOS:A1994BB65V00030 ER PT J AU KIM, HS CUMMINGS, VJ AF KIM, HS CUMMINGS, VJ BE Bailey, GW GarrattReed, AJ TI INVESTIGATION OF A WASHER EMBEDDED IN AN ORBITER VEHICLE TILE SO FIFTY-SECOND ANNUAL MEETING - MICROSCOPY SOCIETY OF AMERICA/TWENTY-NINTH ANNUAL MEETING - MICROBEAM ANALYSIS SOCIETY, PROCEEDINGS SE PROCEEDINGS - ANNUAL MEETING OF THE MICROSCOPY SOCIETY OF AMERICA LA English DT Proceedings Paper CT 52nd Annual Meeting of the Microscopy-Society-of-America/29th Annual Meeting of the Microbeam-Analysis-Society CY JUL 31-AUG 05, 1994 CL NEW ORLEANS, LA SP MICROSCOPY SOC AMER, MICROBEAM ANAL SOC C1 NASA,DM MSL 1,KENNEDY SPACE CTR,FL 32899. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SAN FRANCISCO PRESS INC PI SAN FRANCISCO PA BOX 426800, SAN FRANCISCO, CA 94142-6800 SN 0424-8201 J9 PROC ANN MEET MSA PY 1994 BP 654 EP 655 PG 2 WC Instruments & Instrumentation SC Instruments & Instrumentation GA BC03U UT WOS:A1994BC03U00327 ER PT S AU PIKE, WT GEORGE, T KHAN, MA KUZNIA, JN AF PIKE, WT GEORGE, T KHAN, MA KUZNIA, JN BE Bailey, GW GarrattReed, AJ TI TRANSMISSION ELECTRON MICROSCOPY OF ALXGA1-XN/SIC MULTILAYER STRUCTURES SO FIFTY-SECOND ANNUAL MEETING - MICROSCOPY SOCIETY OF AMERICA/TWENTY-NINTH ANNUAL MEETING - MICROBEAM ANALYSIS SOCIETY, PROCEEDINGS SE PROCEEDINGS - ANNUAL MEETING OF THE MICROSCOPY SOCIETY OF AMERICA LA English DT Proceedings Paper CT 52nd Annual Meeting of the Microscopy-Society-of-America/29th Annual Meeting of the Microbeam-Analysis-Society CY JUL 31-AUG 05, 1994 CL NEW ORLEANS, LA SP MICROSCOPY SOC AMER, MICROBEAM ANAL SOC C1 JET PROP LAB,CTR SPACE MICROELECR & TECHNOL,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SAN FRANCISCO PRESS INC PI SAN FRANCISCO PA BOX 426800, SAN FRANCISCO, CA 94142-6800 SN 0424-8201 J9 PROC ANN MEET MSA PY 1994 BP 844 EP 845 PG 2 WC Instruments & Instrumentation SC Instruments & Instrumentation GA BC03U UT WOS:A1994BC03U00422 ER PT B AU Boldt, E Leiter, D AF Boldt, E Leiter, D BE Bicknell, GV Dopita, MA Quinn, PJ TI What are X-ray observations of sky background and discrete sources telling us about the physics of AGN evolution? SO FIRST STROMLO SYMPOSIUM: THE PHYSICS OF ACTIVE GALAXIES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 1st Stromlo Symposium on the Physics of Active Galaxies CY JUN 27-JUL 02, 1993 CL AUSTR ACAD SCI, CANBERRA, AUSTRALIA SP Astron Soc Pacific HO AUSTR ACAD SCI C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. RI Dopita, Michael/P-5413-2014 OI Dopita, Michael/0000-0003-0922-4986 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 0-937707-73-2 J9 ASTR SOC P PY 1994 VL 54 BP 131 EP 140 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33T UT WOS:A1994BE33T00016 ER PT J AU BIGELOW, KA AF BIGELOW, KA TI AGE AND GROWTH OF THE OCEANIC SQUID ONYCHOTEUTHIS-BOREALIJAPONICA IN THE NORTH PACIFIC SO FISHERY BULLETIN LA English DT Article ID STATOLITHS; INCREMENTS; VALIDATION; MATURATION; LARVAE AB Statolith microstructural analysis was applied to 126 specimens of the oceanic boreal clubhook squid, Onychoteuthis borealijaponica, for estimation of age and growth rates. Specimens were captured from the western, central, and eastern North Pacific between approximately lat. 38-degrees-N and 47-degrees-N by driftnet fishing, trawling, and jigging in the summers of 1990 and 1991. Results suggest that increments were deposited at a rate of one per day. Both sexes live approximately one year; males mature at smaller sizes and younger ages than females. Exponential growth models suggest that growth in length was similar for males and females (0.80% ML/day) in the central North Pacific, while growth in weight was higher for females (1.90% WT/day) than males (1.40% WT/day). Females in the western North Pacific exhibited faster growth rates than individuals from the central North Pacific. O. borealijaponica were estimated to have hatched year round based on back calculation of statolith increments from the time of capture. Post-recruit individuals exploited in the O. borealijaponica jig fishery and Ommastrephes bartramii driftnet fishery typically hatched from late summer to early winter. RP BIGELOW, KA (reprint author), NOAA,NATL MARINE FISHERIES SERV,SW FISHERIES SCI CTR,HONOLULU LAB,2570 DOLE ST,HONOLULU,HI 96822, USA. NR 42 TC 20 Z9 24 U1 0 U2 0 PU NATL MARINE FISHERIES SERVICE SCIENTIFIC PUBL OFFICE PI SEATTLE PA 7600 SAND POINT WAY NE BIN C15700, SEATTLE, WA 98115 SN 0090-0656 J9 FISH B-NOAA JI Fish. Bull. PD JAN PY 1994 VL 92 IS 1 BP 13 EP 25 PG 13 WC Fisheries SC Fisheries GA MW770 UT WOS:A1994MW77000002 ER PT J AU POLOVINA, JJ MITCHUM, GT AF POLOVINA, JJ MITCHUM, GT TI SPINY LOBSTER RECRUITMENT AND SEA-LEVEL - RESULTS OF A 1990 FORECAST SO FISHERY BULLETIN LA English DT Article ID HAWAIIAN C1 UNIV HAWAII,JOINT INST MARINE & ATMOSPHER RES,KANEOHE,HI 96744. UNIV HAWAII,SCH OCEAN & EARTH SCI & TECHNOL,DEPT OCEANOG,KANEOHE,HI 96744. RP POLOVINA, JJ (reprint author), NOAA,NATL MARINE FISHERIES SERV,SW FISHERIES SCI CTR,HONOLULU LAB,2570 DOLE ST,HONOLULU,HI 96822, USA. NR 2 TC 11 Z9 11 U1 0 U2 0 PU NATL MARINE FISHERIES SERVICE SCIENTIFIC PUBL OFFICE PI SEATTLE PA 7600 SAND POINT WAY NE BIN C15700, SEATTLE, WA 98115 SN 0090-0656 J9 FISH B-NOAA JI Fish. Bull. PD JAN PY 1994 VL 92 IS 1 BP 203 EP 205 PG 3 WC Fisheries SC Fisheries GA MW770 UT WOS:A1994MW77000019 ER PT B AU LESH, JR AF LESH, JR BE Mecherle, GS TI PROGRESS AND PLANS FOR THE OPTICAL COMMUNICATIONS PROGRAM AT JPL SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 14 EP 23 DI 10.1117/12.184649 PG 10 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00002 ER PT B AU WILSON, KE AF WILSON, KE BE Mecherle, GS TI AN OVERVIEW OF THE COMPENSATED EARTH-MOON-EARTH LASER LINK (CEMERLL) EXPERIMENT SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 66 EP 74 DI 10.1117/12.184685 PG 9 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00006 ER PT B AU CHEN, C LESH, JR AF CHEN, C LESH, JR BE Mecherle, GS TI OVERVIEW OF THE OPTICAL COMMUNICATIONS DEMONSTRATOR SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 19 Z9 20 U1 6 U2 8 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 85 EP 95 DI 10.1117/12.184687 PG 11 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00008 ER PT B AU SHAIK, K WONICA, D WILHELM, M AF SHAIK, K WONICA, D WILHELM, M BE Mecherle, GS TI OPTICAL NETWORKS FOR EARTH-SPACE COMMUNICATIONS AND THEIR PERFORMANCE SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 156 EP 177 DI 10.1117/12.184644 PG 22 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00013 ER PT B AU SEERY, BD FITZMAURICE, MW HAYDEN, W BURT, J MINOTT, P KRAINAK, M AF SEERY, BD FITZMAURICE, MW HAYDEN, W BURT, J MINOTT, P KRAINAK, M BE Mecherle, GS TI TDRSS-LIGHT - A SPACE COMMUNICATIONS ARCHITECTURE SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 178 EP 187 DI 10.1117/12.184645 PG 10 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00014 ER PT B AU HEMMATI, H LESH, JR AF HEMMATI, H LESH, JR BE Mecherle, GS TI A 3.5 W OUTPUT, DIODE-PUMPED, Q-SWITCHED 532 NM LASER SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 264 EP 269 DI 10.1117/12.184682 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00021 ER PT B AU HEMMATI, H COPELAND, DJ AF HEMMATI, H COPELAND, DJ BE Mecherle, GS TI LASER TRANSMITTER ASSEMBLY FOR OPTICAL COMMUNICATION DEMONSTRATOR SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 283 EP 291 DI 10.1117/12.184654 PG 9 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00023 ER PT B AU RUSSELL, D ANSARI, H CHEN, CC AF RUSSELL, D ANSARI, H CHEN, CC BE Mecherle, GS TI LASERCOM POINTING ACQUISITION AND TRACKING CONTROL USING A CCD-BASED TRACKER SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 7 Z9 7 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 294 EP 303 DI 10.1117/12.184655 PG 10 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00024 ER PT B AU ANSARI, H AF ANSARI, H BE Mecherle, GS TI DIGITAL-CONTROL DESIGN OF A CCD-BASED TRACKING LOOP FOR PRECISION BEAM POINTING SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 10 Z9 10 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 328 EP 333 DI 10.1117/12.184658 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00027 ER PT B AU VOISINET, L AF VOISINET, L BE Mecherle, GS TI CONTROL PROCESSING SYSTEM ARCHITECTURE FOR THE OPTICAL COMMUNICATION DEMONSTRATOR SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 393 EP 398 DI 10.1117/12.184683 PG 6 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00034 ER PT B AU YAN, TY AF YAN, TY BE Mecherle, GS TI ATMOSPHERIC TRANSMISSION MODEL THROUGH AUTONOMOUS VISIBILITY MEASUREMENT SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 400 EP 408 DI 10.1117/12.184666 PG 9 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00035 ER PT B AU LEVINE, BM KIASALEH, K AF LEVINE, BM KIASALEH, K BE Mecherle, GS TI INTENSITY FLUCTUATIONS IN THE COMPENSATED EARTH MOON EARTH LASER LINK (CEMERLL) EXPERIMENT SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,COMMUN SYST RES SECT,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 409 EP 422 DI 10.1117/12.184667 PG 14 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00036 ER PT B AU CHAKRAVARTHI, PR HEMMATI, H CHEN, CC AF CHAKRAVARTHI, PR HEMMATI, H CHEN, CC BE Mecherle, GS TI OPTICAL PARAMETRIC AMPLIFICATION FOR DETECTION OF WEAK OPTICAL SIGNALS SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 458 EP 469 DI 10.1117/12.184673 PG 12 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00042 ER PT B AU WONICA, D AF WONICA, D BE Mecherle, GS TI ECONOMICAL 10-METER-CLASS GROUND-BASED RECEIVER FOR DEEP-SPACE OPTICAL COMMUNICATIONS SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 487 EP 497 DI 10.1117/12.184676 PG 11 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00045 ER PT B AU PAGE, NA AF PAGE, NA BE Mecherle, GS TI DESIGN OF THE OPTICAL COMMUNICATION DEMONSTRATOR INSTRUMENT OPTICAL-SYSTEM SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 4 Z9 4 U1 3 U2 3 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 498 EP 504 DI 10.1117/12.184677 PG 7 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00046 ER PT B AU VONLOSSBERG, B AF VONLOSSBERG, B BE Mecherle, GS TI MECHANICAL DESIGN AND DESIGN PROCESSES FOR THE TELESCOPE OPTICAL ASSEMBLY OF THE OPTICAL COMMUNICATIONS DEMONSTRATOR SO FREE-SPACE LASER COMMUNICATION TECHNOLOGIES VI SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Free-Space Laser Communication Technologies VI CY JAN 26-28, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1416-6 J9 P SOC PHOTO-OPT INS PY 1994 VL 2123 BP 505 EP 517 DI 10.1117/12.184678 PG 13 WC Engineering, Aerospace; Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA BB18P UT WOS:A1994BB18P00047 ER PT B AU BARQUINERO, K AF BARQUINERO, K BE Kassicieh, SK Radosevich, HR TI TARGETED TECHNOLOGY COMMERCIALIZATION THROUGH VALUE-ADDED FACILITATORS SO FROM LAB TO MARKET: COMMERCIALIZATION OF PUBLIC SECTOR TECHNOLOGY LA English DT Proceedings Paper CT Technology Commercialization Conference CY MAR, 1993 CL SANTA FE, NM SP UNIV NEW MEXICO, ANDERSON SCH MANAGEMENT, SANDIA NATL LABS, LOS ALAMOS NATL LAB, PHILLIPS LAB, UNIV TEXAS AUSTIN, RGK FDN & INST CONSTRUCT CAPITALISM, ECON DEV DEPT, NEW MEXICO, OFF US SENATOR JEFF BINGAMAN, OFF US SENATOR PETE DOMENICI C1 NASA HEADQUARTERS,OFF ADV CONCEPTS & TECHNOL,WASHINGTON,DC 20504. 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 0-306-44717-7 PY 1994 BP 247 EP 252 PG 6 WC Engineering, Industrial SC Engineering GA BB28X UT WOS:A1994BB28X00026 ER PT B AU VENKATAKRISHNAN, V MAVRIPLIS, DJ AF VENKATAKRISHNAN, V MAVRIPLIS, DJ BE Caughey, DA Hafez, MM TI SOLUTION TECHNIQUES FOR UNSTRUCTURED GRID FLOW COMPUTATIONS SO FRONTIERS OF COMPUTATIONAL FLUID DYNAMICS 1994 SE CMAS: COMPUTATIONAL METHODS IN APPLIED SCIENCES LA English DT Proceedings Paper CT Symposium on Computing the Future - Advances and Prospects for Computational Aerodynamics, Honoring Antony Jameson on his 60th Birthday CY NOV 18-19, 1994 CL CORNELL UNIV, ITHACA, NY HO CORNELL UNIV C1 NASA,LANGLEY RES CTR,CASE,HAMPTON,VA 23665. NR 0 TC 1 Z9 1 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI CHICHESTER PA BAFFINS LANE, CHICHESTER, WEST SUSSEX, ENGLAND PO19 1UD BN 0-471-95334-2 J9 CMAS PY 1994 BP 135 EP 151 PG 17 WC Engineering, Aerospace; Mechanics SC Engineering; Mechanics GA BC58G UT WOS:A1994BC58G00009 ER PT B AU YOON, SK KWAK, D AF YOON, SK KWAK, D BE Caughey, DA Hafez, MM TI MULTIGRID CONVERGENCE OF AN LU SCHEME SO FRONTIERS OF COMPUTATIONAL FLUID DYNAMICS 1994 SE CMAS: COMPUTATIONAL METHODS IN APPLIED SCIENCES LA English DT Proceedings Paper CT Symposium on Computing the Future - Advances and Prospects for Computational Aerodynamics, Honoring Antony Jameson on his 60th Birthday CY NOV 18-19, 1994 CL CORNELL UNIV, ITHACA, NY HO CORNELL UNIV C1 NASA,AMES RES CTR,COMPUTAT ALGORITHMS & APPLICAT BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 2 Z9 2 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI CHICHESTER PA BAFFINS LANE, CHICHESTER, WEST SUSSEX, ENGLAND PO19 1UD BN 0-471-95334-2 J9 CMAS PY 1994 BP 319 EP 338 PG 20 WC Engineering, Aerospace; Mechanics SC Engineering; Mechanics GA BC58G UT WOS:A1994BC58G00018 ER PT B AU HICKS, RM CLIFF, SE AF HICKS, RM CLIFF, SE BE Caughey, DA Hafez, MM TI JAMESON,ANTONY CONTRIBUTIONS TO CFD AT NASA AMES RESEARCH CENTER SO FRONTIERS OF COMPUTATIONAL FLUID DYNAMICS 1994 SE CMAS: COMPUTATIONAL METHODS IN APPLIED SCIENCES LA English DT Proceedings Paper CT Symposium on Computing the Future - Advances and Prospects for Computational Aerodynamics, Honoring Antony Jameson on his 60th Birthday CY NOV 18-19, 1994 CL CORNELL UNIV, ITHACA, NY HO CORNELL UNIV C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI CHICHESTER PA BAFFINS LANE, CHICHESTER, WEST SUSSEX, ENGLAND PO19 1UD BN 0-471-95334-2 J9 CMAS PY 1994 BP 363 EP 383 PG 21 WC Engineering, Aerospace; Mechanics SC Engineering; Mechanics GA BC58G UT WOS:A1994BC58G00020 ER PT B AU LIOU, MS KAO, KH AF LIOU, MS KAO, KH BE Caughey, DA Hafez, MM TI PROGRESS IN GRID GENERATION - FROM CHIMERA TO DRAGON GRIDS SO FRONTIERS OF COMPUTATIONAL FLUID DYNAMICS 1994 SE CMAS: COMPUTATIONAL METHODS IN APPLIED SCIENCES LA English DT Proceedings Paper CT Symposium on Computing the Future - Advances and Prospects for Computational Aerodynamics, Honoring Antony Jameson on his 60th Birthday CY NOV 18-19, 1994 CL CORNELL UNIV, ITHACA, NY HO CORNELL UNIV C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 1 Z9 1 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI CHICHESTER PA BAFFINS LANE, CHICHESTER, WEST SUSSEX, ENGLAND PO19 1UD BN 0-471-95334-2 J9 CMAS PY 1994 BP 385 EP 411 PG 27 WC Engineering, Aerospace; Mechanics SC Engineering; Mechanics GA BC58G UT WOS:A1994BC58G00021 ER PT B AU VATSA, VN SANETRIK, MD PARLETTE, EB AF VATSA, VN SANETRIK, MD PARLETTE, EB BE Caughey, DA Hafez, MM TI A MULTIGRID BASED MULTIBLOCK FLOW SOLVER FOR PRACTICAL AERODYNAMIC CONFIGURATIONS SO FRONTIERS OF COMPUTATIONAL FLUID DYNAMICS 1994 SE CMAS: COMPUTATIONAL METHODS IN APPLIED SCIENCES LA English DT Proceedings Paper CT Symposium on Computing the Future - Advances and Prospects for Computational Aerodynamics, Honoring Antony Jameson on his 60th Birthday CY NOV 18-19, 1994 CL CORNELL UNIV, ITHACA, NY HO CORNELL UNIV C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 1 Z9 1 U1 0 U2 0 PU JOHN WILEY & SONS LTD PI CHICHESTER PA BAFFINS LANE, CHICHESTER, WEST SUSSEX, ENGLAND PO19 1UD BN 0-471-95334-2 J9 CMAS PY 1994 BP 413 EP 447 PG 35 WC Engineering, Aerospace; Mechanics SC Engineering; Mechanics GA BC58G UT WOS:A1994BC58G00022 ER PT B AU MATHER, JC AF MATHER, JC BE Wamsteker, W Longair, MS Kondo, Y TI RECENT RESULTS FROM THE COSMIC BACKGROUND EXPLORER (COBE) SO FRONTIERS OF SPACE AND GROUND-BASED ASTRONOMY: THE ASTROPHYSICS OF THE 21ST CENTURY SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT 27th ESLAB Symposium on Frontiers of Space and Ground-Based Astronomy - the Astrophysics of the 21st Century CY MAY 10-14, 1993 CL NOORDWIJK, NETHERLANDS SP EUROPEAN SPACE AGENCY, NASA, INT ASTRON UNION, COMMISS SPACE RES, SPACE RES ORG NETHERLANDS DE COSMIC BACKGROUND EXPLORER; COBE; COSMOLOGY; MICROWAVE BACKGROUND C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 1 U2 1 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2527-3 J9 ASTROPHYS SPACE SC L PY 1994 VL 187 BP 105 EP 112 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB56F UT WOS:A1994BB56F00012 ER PT B AU KONDO, Y MOOS, W GENZEL, R MATHER, J CESARSKY, C AF KONDO, Y MOOS, W GENZEL, R MATHER, J CESARSKY, C BE Wamsteker, W Longair, MS Kondo, Y TI THE NEW-GENERATION SPACE TELESCOPES SO FRONTIERS OF SPACE AND GROUND-BASED ASTRONOMY: THE ASTROPHYSICS OF THE 21ST CENTURY SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT 27th ESLAB Symposium on Frontiers of Space and Ground-Based Astronomy - the Astrophysics of the 21st Century CY MAY 10-14, 1993 CL NOORDWIJK, NETHERLANDS SP EUROPEAN SPACE AGENCY, NASA, INT ASTRON UNION, COMMISS SPACE RES, SPACE RES ORG NETHERLANDS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7923-2527-3 J9 ASTROPHYS SPACE SC L PY 1994 VL 187 BP 459 EP 474 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB56F UT WOS:A1994BB56F00045 ER PT B AU BEICHMAN, CA WERNER, MW AF BEICHMAN, CA WERNER, MW BE Wamsteker, W Longair, MS Kondo, Y TI THE ATLAS SIRTF SO FRONTIERS OF SPACE AND GROUND-BASED ASTRONOMY: THE ASTROPHYSICS OF THE 21ST CENTURY SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT 27th ESLAB Symposium on Frontiers of Space and Ground-Based Astronomy - the Astrophysics of the 21st Century CY MAY 10-14, 1993 CL NOORDWIJK, NETHERLANDS SP EUROPEAN SPACE AGENCY, NASA, INT ASTRON UNION, COMMISS SPACE RES, SPACE RES ORG NETHERLANDS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7923-2527-3 J9 ASTROPHYS SPACE SC L PY 1994 VL 187 BP 517 EP 520 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB56F UT WOS:A1994BB56F00055 ER PT B AU PEREZ, MR GRADY, CA VANDENANCKER, M THE, PS DEWINTER, D SCHULTELADBECK, R BJORKMAN, K SHEPHERD, D AF PEREZ, MR GRADY, CA VANDENANCKER, M THE, PS DEWINTER, D SCHULTELADBECK, R BJORKMAN, K SHEPHERD, D BE Wamsteker, W Longair, MS Kondo, Y TI THE SPECTRAL ENERGY-DISTRIBUTION AND THE UV EXCESS IN THE HERBIG BE CANDIDATE HD-45677 SO FRONTIERS OF SPACE AND GROUND-BASED ASTRONOMY: THE ASTROPHYSICS OF THE 21ST CENTURY SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT 27th ESLAB Symposium on Frontiers of Space and Ground-Based Astronomy - the Astrophysics of the 21st Century CY MAY 10-14, 1993 CL NOORDWIJK, NETHERLANDS SP EUROPEAN SPACE AGENCY, NASA, INT ASTRON UNION, COMMISS SPACE RES, SPACE RES ORG NETHERLANDS C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,IUE OBSERV,GREENBELT,MD 20771. 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 0-7923-2527-3 J9 ASTROPHYS SPACE SC L PY 1994 VL 187 BP 563 EP 564 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB56F UT WOS:A1994BB56F00066 ER PT B AU BONNELL, JT PEREZ, MR MCCOLLUM, B AF BONNELL, JT PEREZ, MR MCCOLLUM, B BE Wamsteker, W Longair, MS Kondo, Y TI THE ULTRAVIOLET-SPECTRUM OF AN EXTREMELY METAL DEFICIENT STAR - HD 52961 SO FRONTIERS OF SPACE AND GROUND-BASED ASTRONOMY: THE ASTROPHYSICS OF THE 21ST CENTURY SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT 27th ESLAB Symposium on Frontiers of Space and Ground-Based Astronomy - the Astrophysics of the 21st Century CY MAY 10-14, 1993 CL NOORDWIJK, NETHERLANDS SP EUROPEAN SPACE AGENCY, NASA, INT ASTRON UNION, COMMISS SPACE RES, SPACE RES ORG NETHERLANDS C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,COMPTON GRO SCI SUPPORT CTR,GREENBELT,MD 20771. 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 0-7923-2527-3 J9 ASTROPHYS SPACE SC L PY 1994 VL 187 BP 579 EP 580 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB56F UT WOS:A1994BB56F00072 ER PT B AU SHRADER, CR WEBB, JR BALONEK, TJ CLEMENTS, S SMITH, AG NAIR, AD LEACOCK, RJ GOMBOLA, PP ROBSON, I VALTAJOA, E FUJIMOTO, R MAKINO, F KII, T AF SHRADER, CR WEBB, JR BALONEK, TJ CLEMENTS, S SMITH, AG NAIR, AD LEACOCK, RJ GOMBOLA, PP ROBSON, I VALTAJOA, E FUJIMOTO, R MAKINO, F KII, T BE Wamsteker, W Longair, MS Kondo, Y TI MULTIWAVELENGTH EVOLUTION OF THE 1991 OUTBURST OF 3C-345 SO FRONTIERS OF SPACE AND GROUND-BASED ASTRONOMY: THE ASTROPHYSICS OF THE 21ST CENTURY SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT 27th ESLAB Symposium on Frontiers of Space and Ground-Based Astronomy - the Astrophysics of the 21st Century CY MAY 10-14, 1993 CL NOORDWIJK, NETHERLANDS SP EUROPEAN SPACE AGENCY, NASA, INT ASTRON UNION, COMMISS SPACE RES, SPACE RES ORG NETHERLANDS C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. 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 0-7923-2527-3 J9 ASTROPHYS SPACE SC L PY 1994 VL 187 BP 693 EP 694 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB56F UT WOS:A1994BB56F00114 ER PT B AU PEREZ, MR THOMPSON, RW BARYLAK, M BONNELL, JT AF PEREZ, MR THOMPSON, RW BARYLAK, M BONNELL, JT BE Wamsteker, W Longair, MS Kondo, Y TI THE EVOLUTION OF THE IUE ARCHIVE SO FRONTIERS OF SPACE AND GROUND-BASED ASTRONOMY: THE ASTROPHYSICS OF THE 21ST CENTURY SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT 27th ESLAB Symposium on Frontiers of Space and Ground-Based Astronomy - the Astrophysics of the 21st Century CY MAY 10-14, 1993 CL NOORDWIJK, NETHERLANDS SP EUROPEAN SPACE AGENCY, NASA, INT ASTRON UNION, COMMISS SPACE RES, SPACE RES ORG NETHERLANDS C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,IUE OBSERV,GREENBELT,MD 20771. 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 0-7923-2527-3 J9 ASTROPHYS SPACE SC L PY 1994 VL 187 BP 709 EP 713 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB56F UT WOS:A1994BB56F00120 ER PT B AU CUMMINGS, D ALKALAJ, L AF CUMMINGS, D ALKALAJ, L GP IEEE, COMP SOC TI CHECKPOINT ROLLBACK IN A DISTRIBUTED SYSTEM USING COARSE-GRAINED DATA-FLOW SO FTCS-24 - THE TWENTY-FOURTH INTERNATIONAL SYMPOSIUM ON FAULT-TOLERANT COMPUTING: DIGEST OF PAPERS LA English DT Proceedings Paper CT 24th International Symposium on Fault-Tolerant Computing CY JUN 15-17, 1994 CL AUSTIN, TX SP IEEE, COMP SOC, TECH COMM FAULT TOLERANT COMP, UNIV TEXAS AUSTIN C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8186-5520-8 PY 1994 BP 424 EP 433 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BA96M UT WOS:A1994BA96M00044 ER PT B AU STANDISH, EM AF STANDISH, EM BE Morrison, LV Gilmore, GF TI MERIDIAN CIRCLE OBSERVATIONS OF THE PLANETS SO GALACTIC AND SOLAR SYSTEM OPTICAL ASTROMETRY LA English DT Proceedings Paper CT Workshop on Galactic and Solar System Optical Astrometry CY JUN 21-24, 1993 CL ROBINSON COLL, CAMBRIDGE, ENGLAND SP ROYAL GREENWICH OBSERVATORY, INST ASTRON HO ROBINSON COLL C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE, CAMBS, ENGLAND CB2 1RP BN 0-521-46240-1 PY 1994 BP 253 EP 262 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BC10G UT WOS:A1994BC10G00044 ER PT B AU YEOMANS, DK AF YEOMANS, DK BE Morrison, LV Gilmore, GF TI ASTROMETRY AND SPACE MISSIONS TO ASTEROIDS AND COMETS SO GALACTIC AND SOLAR SYSTEM OPTICAL ASTROMETRY LA English DT Proceedings Paper CT Workshop on Galactic and Solar System Optical Astrometry CY JUN 21-24, 1993 CL ROBINSON COLL, CAMBRIDGE, ENGLAND SP ROYAL GREENWICH OBSERVATORY, INST ASTRON HO ROBINSON COLL C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 1 Z9 1 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE, CAMBS, ENGLAND CB2 1RP BN 0-521-46240-1 PY 1994 BP 276 EP 285 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BC10G UT WOS:A1994BC10G00046 ER PT S AU MITRA, B BISWAS, S GOSWAMI, JN DUTTA, A RAMADURAI, S AF MITRA, B BISWAS, S GOSWAMI, JN DUTTA, A RAMADURAI, S BE Biswas, S Ramadurai, S TI INTERSTELLAR PROPAGATION AND ELECTRON-CAPTURE PROCESSES OF GALACTIC COSMIC-RAY HEAVY-IONS IN-SPACE SO GALACTIC COSMIC RAY HEAVY IONS SE ADVANCES IN SPACE RESEARCH LA English DT Note CT Topical Meeting of the COSPAR Interdisciplinary Scientific Commission E (Meeting E7) of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES C1 PHYS RES LAB,AHMEDABAD 380009,GUJARAT,INDIA. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RP MITRA, B (reprint author), TATA INST FUNDAMENTAL RES,BOMBAY 400005,MAHARASHTRA,INDIA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042535-6 J9 ADV SPACE RES PY 1994 VL 15 IS 1 BP 51 EP 51 PG 1 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BB12F UT WOS:A1994BB12F00007 ER PT S AU COOPER, JF CHEN, J GUZIK, TG SANG, Y WEFEL, JP AF COOPER, JF CHEN, J GUZIK, TG SANG, Y WEFEL, JP BE Biswas, S Ramadurai, S TI COSMIC-RAY HEAVY-ION PENETRATION DEEP INTO THE MAGNETOSPHERE - RESULTS FROM S81-1 AND CRRES SO GALACTIC COSMIC RAY HEAVY IONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Topical Meeting of the COSPAR Interdisciplinary Scientific Commission E (Meeting E7) of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES AB In spite of strong magnetic shielding by the geomagnetic field, small fractions (1-10%) of the total high energy, heavy ion intensities of solar and galactic cosmic rays have been observed at energies below theoretical cutoffs for direct entry into the earth's magnetosphere from interplanetary space. We report on measurements of these heavy ions at 10 to 500 MeV/nucleon by cosmic ray composition experiments on the S81-1 satellite in polar orbit during 1982 and on the CRRES satellite in geosynchronous transfer orbit during 1990-1991. C1 LOUISIANA STATE UNIV,DEPT PHYS & ASTRON,BATON ROUGE,LA 70803. RP COOPER, JF (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HUGHES STX CORP,NATL SPACE SCI DATA CTR,CODE 633,GREENBELT,MD 20771, USA. RI Cooper, John/D-4709-2012 NR 9 TC 0 Z9 0 U1 0 U2 2 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042535-6 J9 ADV SPACE RES PY 1994 VL 15 IS 1 BP 61 EP 64 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BB12F UT WOS:A1994BB12F00010 ER PT S AU MEEGAN, C FISHMAN, G WILSON, R BROCK, M HORACK, J PACIESAS, W PENDLETON, G BRIGGS, M KOSHUT, T KOUVELIOTOU, C TEEGARDEN, B MATTESON, J HAKKILA, J AF MEEGAN, C FISHMAN, G WILSON, R BROCK, M HORACK, J PACIESAS, W PENDLETON, G BRIGGS, M KOSHUT, T KOUVELIOTOU, C TEEGARDEN, B MATTESON, J HAKKILA, J BE Fishman, GJ Brainerd, JJ Hurley, K TI 2-1/2-YEARS OF BATSE BURST OBSERVATIONS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 5 Z9 5 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 3 EP 12 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00001 ER PT S AU DINGUS, BL SREEKUMAR, P SCHNEID, EJ BERTSCH, DL FICHTEL, CE HARDING, AK MATTOX, JR HURLEY, K KNIFFEN, DA KANBACH, G MAYERHASSELWANDER, HA SOMMER, M VONMONTIGNY, C LIN, YC MICHELSON, PF NOLAN, PL AF DINGUS, BL SREEKUMAR, P SCHNEID, EJ BERTSCH, DL FICHTEL, CE HARDING, AK MATTOX, JR HURLEY, K KNIFFEN, DA KANBACH, G MAYERHASSELWANDER, HA SOMMER, M VONMONTIGNY, C LIN, YC MICHELSON, PF NOLAN, PL BE Fishman, GJ Brainerd, JJ Hurley, K TI EGRET OBSERVATIONS OF 3 GAMMA-RAY BURSTS AT ENERGIES GREATER-THAN-30 MEV SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 UNIV SPACE RES ASSOC,NASA,GSFC,GREENBELT,MD. RI Harding, Alice/D-3160-2012 NR 0 TC 4 Z9 4 U1 0 U2 2 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 22 EP 26 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00004 ER PT S AU HORACK, JM EMSLIE, AG AF HORACK, JM EMSLIE, AG BE Fishman, GJ Brainerd, JJ Hurley, K TI INTEGRAL MOMENT ANALYSIS OF THE BATSE GAMMA-RAY BURST INTENSITY DISTRIBUTION SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 64 EP 68 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00013 ER PT S AU HORACK, JM STOREY, SD KOSHUT, TM MALLOZZI, RS EMSLIE, AG AF HORACK, JM STOREY, SD KOSHUT, TM MALLOZZI, RS EMSLIE, AG BE Fishman, GJ Brainerd, JJ Hurley, K TI IMPLICATIONS OF THE BATSE DATA FOR A HELIOCENTRIC ORIGIN OF GAMMA-RAY BURSTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 69 EP 73 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00014 ER PT S AU KOUVELIOTOU, C MEEGAN, CA FISHMAN, GJ BHAT, PN BRIGGS, MS KOSHUT, TM PACIESAS, WS PENDLETON, GN AF KOUVELIOTOU, C MEEGAN, CA FISHMAN, GJ BHAT, PN BRIGGS, MS KOSHUT, TM PACIESAS, WS PENDLETON, GN BE Fishman, GJ Brainerd, JJ Hurley, K TI 2 CLASSES OF GAMMA-RAY BURSTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 1 Z9 1 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 167 EP 171 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00033 ER PT S AU NORRIS, JP NEMIROFF, RJ DAVIS, SP KOUVELIOTOU, C FISHMAN, GJ MEEGAN, CA PACIESAS, WS AF NORRIS, JP NEMIROFF, RJ DAVIS, SP KOUVELIOTOU, C FISHMAN, GJ MEEGAN, CA PACIESAS, WS BE Fishman, GJ Brainerd, JJ Hurley, K TI EXPLORATION OF BI-MODALITY IN GAMMA-RAY BURST DURATION AND HARDNESS DISTRIBUTIONS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 1 Z9 1 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 172 EP 176 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00034 ER PT S AU NORRIS, JP AF NORRIS, JP BE Fishman, GJ Brainerd, JJ Hurley, K TI MEASURING THE DISTRIBUTION OF TEMPORAL STRUCTURE IN GAMMA-RAY BURSTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 177 EP 181 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00035 ER PT S AU DAVIS, SP NORRIS, JP KOUVELIOTOU, C FISHMAN, GJ MEEGAN, CA PACIESAS, WS AF DAVIS, SP NORRIS, JP KOUVELIOTOU, C FISHMAN, GJ MEEGAN, CA PACIESAS, WS BE Fishman, GJ Brainerd, JJ Hurley, K TI PULSE-WIDTH DISTRIBUTIONS AND TOTAL COUNTS AS INDICATORS OF COSMOLOGICAL TIME DILATION IN GAMMA-RAY BURSTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 3 Z9 3 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 182 EP 186 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00036 ER PT S AU CHIPMAN, E AF CHIPMAN, E BE Fishman, GJ Brainerd, JJ Hurley, K TI FREQUENCY-DEPENDENT ENERGY PHASE LAGS IN GAMMA-RAY BURSTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 202 EP 206 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00040 ER PT S AU MEEGAN, C KOUVELIOTOU, C AF MEEGAN, C KOUVELIOTOU, C BE Fishman, GJ Brainerd, JJ Hurley, K TI ON BURST CLASSIFICATION USING PEAK RATE RATIOS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 232 EP 236 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00046 ER PT S AU PALMER, DM TEEGARDEN, BJ SCHAEFER, BE CLINE, TL BAND, DL FORD, LA MATTESON, JL PREECE, RD PACIESAS, WS PENDLETON, GN BRIGGS, MS FISHMAN, GJ MEEGAN, CA WILSON, RB LESTRADE, JP AF PALMER, DM TEEGARDEN, BJ SCHAEFER, BE CLINE, TL BAND, DL FORD, LA MATTESON, JL PREECE, RD PACIESAS, WS PENDLETON, GN BRIGGS, MS FISHMAN, GJ MEEGAN, CA WILSON, RB LESTRADE, JP BE Fishman, GJ Brainerd, JJ Hurley, K TI THE SEARCH FOR GAMMA-RAY BURST SPECTRAL FEATURES IN THE COMPTON GRO BATSE DATA SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 247 EP 255 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00049 ER PT S AU SCHAEFER, BE TEEGARDEN, BJ PALMER, DM CLINE, TL MITRUKA, S FORD, LA BAND, DL MATTESON, JL BRIGGS, MS PACIESAS, WS PENDLETON, GN PREECE, RD AF SCHAEFER, BE TEEGARDEN, BJ PALMER, DM CLINE, TL MITRUKA, S FORD, LA BAND, DL MATTESON, JL BRIGGS, MS PACIESAS, WS PENDLETON, GN PREECE, RD BE Fishman, GJ Brainerd, JJ Hurley, K TI BATSE CYCLOTRON LINE SEARCH PROTOCOL SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 3 Z9 4 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 271 EP 274 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00053 ER PT S AU SCHAEFER, BE TEEGARDEN, B CLINE, T DINGUS, BL FISHMAN, GJ MEEGAN, CA WILSON, RB PACIESAS, WS PENDLETON, GN BAND, DL SCHNEID, EJ KWOK, PW SCHONFELDER, V WINKLER, C HERMSEN, W KIPPEN, RM AF SCHAEFER, BE TEEGARDEN, B CLINE, T DINGUS, BL FISHMAN, GJ MEEGAN, CA WILSON, RB PACIESAS, WS PENDLETON, GN BAND, DL SCHNEID, EJ KWOK, PW SCHONFELDER, V WINKLER, C HERMSEN, W KIPPEN, RM BE Fishman, GJ Brainerd, JJ Hurley, K TI CROSS CALIBRATION OF BURST SPECTRA WITH BATSE, EGRET, AND COMPTEL FOR GRB910503 SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 1 Z9 1 U1 1 U2 1 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 280 EP 282 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00055 ER PT S AU SCHAEFER, BE AF SCHAEFER, BE BE Fishman, GJ Brainerd, JJ Hurley, K TI DISTANCE TO GAMMA-RAY BURSTS FROM THEIR SOFT-X-RAY SPECTRA SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 2 Z9 2 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 341 EP 345 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00068 ER PT S AU CLINE, TL HURLEY, KC SOMMER, M BOER, M NIEL, M FISHMAN, GJ KOUVELIOTOU, C MEEGAN, CA PACIESAS, WS WILSON, RB LAROS, JG KLEBESADEL, RW AF CLINE, TL HURLEY, KC SOMMER, M BOER, M NIEL, M FISHMAN, GJ KOUVELIOTOU, C MEEGAN, CA PACIESAS, WS WILSON, RB LAROS, JG KLEBESADEL, RW BE Fishman, GJ Brainerd, JJ Hurley, K TI STUDY OF THE PRECISION OF THE GAMMA-RAY BURST SOURCE LOCATIONS OBTAINED WITH THE ULYSSES PVO CGRO NETWORK SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 373 EP 376 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00074 ER PT S AU SCHAEFER, BE AF SCHAEFER, BE BE Fishman, GJ Brainerd, JJ Hurley, K TI SEARCH FOR GAMMA-RAY BURST COUNTERPARTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 6 Z9 6 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 382 EP 391 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00076 ER PT S AU BARTHELMY, SD PALMER, DM SCHAEFER, BE AF BARTHELMY, SD PALMER, DM SCHAEFER, BE BE Fishman, GJ Brainerd, JJ Hurley, K TI RAPID OPTICAL FOLLOW-UP OBSERVATIONS OF 3 RECENT GAMMA-RAY BURSTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Barthelmy, Scott/D-2943-2012 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 392 EP 395 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00077 ER PT S AU BONNELL, JT NORRIS, JP BARTHELMY, SD CLINE, TL GEHRELS, N FISHMAN, GJ KOUVELIOTOU, C MEEGAN, CA AF BONNELL, JT NORRIS, JP BARTHELMY, SD CLINE, TL GEHRELS, N FISHMAN, GJ KOUVELIOTOU, C MEEGAN, CA BE Fishman, GJ Brainerd, JJ Hurley, K TI A REAL-TIME SEARCH FOR OPTICAL COUNTERPARTS TO GAMMA-RAY BURSTS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,GREENBELT,MD 20771. RI Barthelmy, Scott/D-2943-2012 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 401 EP 403 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00079 ER PT S AU HARDING, AK BARING, MG AF HARDING, AK BARING, MG BE Fishman, GJ Brainerd, JJ Hurley, K TI ESCAPE OF HIGH-ENERGY PHOTONS FROM RELATIVISTICALLY EXPANDING GAMMA-RAY BURST SOURCES SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Harding, Alice/D-3160-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 520 EP 524 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00103 ER PT S AU BARING, MG AF BARING, MG BE Fishman, GJ Brainerd, JJ Hurley, K TI GAMMA-RAY BURST CONTINUUM SPECTRA FROM MAGNETIC INVERSE COMPTON-SCATTERING SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 572 EP 576 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00115 ER PT S AU BARTHELMY, SD CLINE, TL GEHRELS, N BIALAS, TG ROBBINS, MA KUYPER, JR FISHMAN, GJ KOUVELIOTOU, C MEEGAN, CA AF BARTHELMY, SD CLINE, TL GEHRELS, N BIALAS, TG ROBBINS, MA KUYPER, JR FISHMAN, GJ KOUVELIOTOU, C MEEGAN, CA BE Fishman, GJ Brainerd, JJ Hurley, K TI BACODINE - THE REAL-TIME BATSE GAMMA-RAY BURST COORDINATES DISTRIBUTION NETWORK SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Barthelmy, Scott/D-2943-2012 NR 0 TC 3 Z9 3 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 643 EP 647 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00129 ER PT S AU FISHMAN, GJ MEEGAN, CA KOUVELIOTOU, C MALLOZZI, R HORACK, J KOSHUT, T PENDLETON, G PACIESAS, WS WILSON, RB BROCK, MN AF FISHMAN, GJ MEEGAN, CA KOUVELIOTOU, C MALLOZZI, R HORACK, J KOSHUT, T PENDLETON, G PACIESAS, WS WILSON, RB BROCK, MN BE Fishman, GJ Brainerd, JJ Hurley, K TI BATSE - BURST PERFORMANCE AND EXPERIMENT STATUS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 648 EP 652 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00130 ER PT S AU BROCK, M MEEGAN, C WILSON, R KOUVELIOTOU, C PACIESAS, W PENDLETON, G BRIGGS, M PREECE, R AF BROCK, M MEEGAN, C WILSON, R KOUVELIOTOU, C PACIESAS, W PENDLETON, G BRIGGS, M PREECE, R BE Fishman, GJ Brainerd, JJ Hurley, K TI THE KAPTEYN (LOGNORMAL) DISTRIBUTION AS A MODEL OF GRB SPECTRA AND PULSE PROFILES SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 672 EP 676 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00136 ER PT S AU SKELTON, RT MAHONEY, WA AF SKELTON, RT MAHONEY, WA BE Fishman, GJ Brainerd, JJ Hurley, K TI A SEARCH TECHNIQUE FOR WEAK AND LONG-DURATION GAMMA-RAY BURSTS FROM BACKGROUND MODEL RESIDUALS SO GAMMA-RAY BURSTS - SECOND WORKSHOP SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT 2nd Huntsville Gamma-Ray Workshop CY OCT 20-22, 1993 CL HUNTSVILLE, AL C1 JET PROP LAB,PASADENA,CA 91109. 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 1-56396-336-1 J9 AIP CONF PROC PY 1994 IS 307 BP 706 EP 710 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB12A UT WOS:A1994BB12A00143 ER PT B AU MUKHERJEE, R BERTSCH, DL CUDDAPAH, R DINGUS, BL ESPOSITO, JA FICHTEL, CE HARTMAN, RC HUNTER, SD THOMPSON, DJ AF MUKHERJEE, R BERTSCH, DL CUDDAPAH, R DINGUS, BL ESPOSITO, JA FICHTEL, CE HARTMAN, RC HUNTER, SD THOMPSON, DJ BE Aprile, E TI DEVELOPMENT OF LARGE-AREA DRIFT CHAMBERS FOR HIGH-ENERGY GAMMA-RAY ASTROPHYSICS SO GAMMA-RAY DETECTOR PHYSICS AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Gamma-Ray Detector Physics and Applications CY JUL 29, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20770. RI Hunter, Stanley/D-2942-2012; Thompson, David/D-2939-2012; OI Thompson, David/0000-0001-5217-9135; Dingus, Brenda/0000-0001-8451-7450 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 0-8194-1629-0 J9 P SOC PHOTO-OPT INS PY 1994 VL 2305 BP 2 EP 12 DI 10.1117/12.187255 PG 11 WC Instruments & Instrumentation; Physics, Nuclear SC Instruments & Instrumentation; Physics GA BB66J UT WOS:A1994BB66J00001 ER PT B AU PARSONS, A STAHLE, CM LISSE, CM BABU, S GEHRELS, N TEEGARDEN, BJ SHU, P AF PARSONS, A STAHLE, CM LISSE, CM BABU, S GEHRELS, N TEEGARDEN, BJ SHU, P BE Aprile, E TI ROOM-TEMPERATURE SEMICONDUCTOR-DETECTORS FOR HARD X-RAY ASTROPHYSICS SO GAMMA-RAY DETECTOR PHYSICS AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Gamma-Ray Detector Physics and Applications CY JUL 29, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS DE SEMICONDUCTORS; X-RAY; GAMMA-RAY; CADMIUM ZINC TELLURIDE; CDZNTE; MERCURIC IODIDE; HGI(2) C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Gehrels, Neil/D-2971-2012; Parsons, Ann/I-6604-2012; Lisse, Carey/B-7772-2016 OI Lisse, Carey/0000-0002-9548-1526 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 0-8194-1629-0 J9 P SOC PHOTO-OPT INS PY 1994 VL 2305 BP 121 EP 132 DI 10.1117/12.187260 PG 12 WC Instruments & Instrumentation; Physics, Nuclear SC Instruments & Instrumentation; Physics GA BB66J UT WOS:A1994BB66J00012 ER PT J AU CANFIELD, DE DESMARAIS, DJ AF CANFIELD, DE DESMARAIS, DJ TI BIOGEOCHEMICAL CYCLES OF CARBON, SULFUR, AND FREE OXYGEN IN A MICROBIAL MAT (VOL 57, PG 3971, 1993) SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Correction, Addition C1 AMES RES CTR,MOFFETT FIELD,CA 94035. RP CANFIELD, DE (reprint author), MAX PLANCK INST MARINE MICROBIOL,FAHRENHEITSTR 1,D-28359 BREMEN,GERMANY. NR 1 TC 1 Z9 1 U1 0 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0016-7037 J9 GEOCHIM COSMOCHIM AC JI Geochim. Cosmochim. Acta PD JAN PY 1994 VL 58 IS 2 BP 1044 EP 1044 DI 10.1016/0016-7037(94)90526-6 PG 1 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA MV544 UT WOS:A1994MV54400039 ER PT B AU REALMUTO, VJ ABRAMS, MJ PIERI, DC BUONGIORNO, MF AF REALMUTO, VJ ABRAMS, MJ PIERI, DC BUONGIORNO, MF BE Zilioli, E TI ANALYSIS OF THERMAL INFRARED MULTISPECTRAL IMAGES FOR THE DETECTION OF SULFUR DIOXIDE IN VOLCANIC PLUMES - A CASE STUDY FROM MOUNT-ETNA, SICILY SO GEOLOGY FROM SPACE SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Geology From Space CY SEP 27, 1994 CL ROME, ITALY SP COMMISS EUROPEAN COMMUNITIES, DIRECTORATE GEN SCI RES & DEV, EUROPEAN OPT SOC, SOC PHOTO OPT INSTRUMENTAT ENGINEERS, CNR, ITALIAN ASSOC REMOTE SENSING C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1650-9 J9 P SOC PHOTO-OPT INS PY 1994 VL 2320 BP 82 EP 88 PG 7 WC Geology; Remote Sensing SC Geology; Remote Sensing GA BC29C UT WOS:A1994BC29C00009 ER PT J AU LU, HI MILLER, TL BUTLER, KA AF LU, HI MILLER, TL BUTLER, KA TI A NUMERICAL STUDY OF WAVE-NUMBER SELECTION IN THE BAROCLINIC ANNULUS FLOW SYSTEM SO GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS LA English DT Article DE ROTATING ANNULUS FLOW; BAROCLINIC WAVES; MULTIPLE EQUILIBRIA; WAVE-NUMBER TRANSITION; 2-STAGE EQUILIBRIUM; HYSTERESIS; INTRANSITIVITY ID ROTATING FLUID ANNULUS; FINITE-DIFFERENCE MODEL; THERMALLY DRIVEN; HEATED ANNULUS; INSTABILITY; WAVES; VACILLATION; SIMULATIONS; TRANSITION; CONVECTION AB An investigation is made of the wavenumber selection of baroclinic disturbances in the rotating, differentially heated annulus flow system with a three-dimensional fully nonlinear high resolution model. Along the constant thermal contrast of 10-degrees-C that traverses the nondimensional parameter space defined by the laboratory experiments of Pfeffer et al. (1980b), a series of numerical experiments with a quiescent-start initial condition is conducted to explore the equilibrated flow regimes as a function of the rotation rate of the annulus. The wavenumber selections in the regular wave regime are robust in the sense that the time required for the dominant wavenumber to emerge is short, and the wavenumber selected tends to persist over a relatively wide region of parameter space. In contrast, the wavenumber selections in wavenumber transition regions are characterized by one or more of the following behaviors: two-stage equilibration, side-banded wave dispersion, and irregular wavenumber selection as a function of the external parameter (here, rotation rate). Wavenumber selection in the wavenumber transition regions is highly sensitive to physical and numerical parameters and is only statistically predictable. In a set of incremental-start experiments, it is shown that hysteresis effects prevail inside and near the wavenumber transition regions. C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,DIV EARTH SCI & APPLICAT,HUNTSVILLE,AL 35812. NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,NEW TECHNOL INC,HUNTSVILLE,AL 35812. RP LU, HI (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,INST GLOBAL CHANGE RES & EDUC,ES42,HUNTSVILLE,AL 35812, USA. NR 35 TC 6 Z9 6 U1 0 U2 0 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0309-1929 J9 GEOPHYS ASTRO FLUID JI Geophys. Astrophys. Fluid Dyn. PY 1994 VL 75 IS 1 BP 1 EP 19 DI 10.1080/03091929408203644 PG 19 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Mechanics SC Astronomy & Astrophysics; Geochemistry & Geophysics; Mechanics GA PY253 UT WOS:A1994PY25300001 ER PT J AU WEBSTER, CR MAY, RD ALLEN, M JAEGLE, L MCCORMICK, MP AF WEBSTER, CR MAY, RD ALLEN, M JAEGLE, L MCCORMICK, MP TI BALLOON PROFILES OF STRATOSPHERIC NO2 AND HNO3 FOR TESTING THE HETEROGENEOUS HYDROLYSIS OF N2O5 ON SULFATE AEROSOLS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID SIMULTANEOUS INSITU MEASUREMENTS; DIODE-LASER SPECTROMETER; ERUPTION; OZONE AB Simultaneous in situ measurements of stratospheric NO2, HNO3, HCI, and CH4 from 34 to 24 km were made in August 1992 from Palestine, Texas, using the Balloon-borne Laser In-Situ Sensor (BLISS) tunable diode laser spectrometer. Although the measurements of NO2, HNO3, and NO2/HNO3 agree well with gas-phase model calculations near 34 km where SAGE II data show little sulfate aerosol, this is not true at the lower altitudes where SAGE II shows high aerosol loadings. At 24 km the BLISS NO2 and HNO3 measurements are 70% lower, and 50% higher, respectively, than the gas phase model predictions, with a measure NO2/HNO, ratio 5 times smaller. When the heterogeneous hydrolysis of N2O5 and ClONO2 on sulfate aerosol of surface area densities matching the SAGE II measurements is added to the model, good agreement with the BLISS measurements is found over the whole altitude range. C1 CALTECH,DEPT ENVIRONM ENGN SCI,PASADENA,CA 91125. NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23665. RP WEBSTER, CR (reprint author), JET PROP LAB,4800 OAK GROVE DR,183-401,PASADENA,CA 91109, USA. NR 24 TC 29 Z9 29 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JAN 1 PY 1994 VL 21 IS 1 BP 53 EP 56 DI 10.1029/93GL03213 PG 4 WC Geosciences, Multidisciplinary SC Geology GA MQ169 UT WOS:A1994MQ16900014 ER PT J AU HOFMANN, DJ OLTMANS, SJ KOMHYR, WD HARRIS, JM LATHROP, JA LANGFORD, AO DESHLER, T JOHNSON, BJ TORRES, A MATTHEWS, WA AF HOFMANN, DJ OLTMANS, SJ KOMHYR, WD HARRIS, JM LATHROP, JA LANGFORD, AO DESHLER, T JOHNSON, BJ TORRES, A MATTHEWS, WA TI OZONE LOSS IN THE LOWER STRATOSPHERE OVER THE UNITED-STATES IN 1992-1993 - EVIDENCE FOR HETEROGENEOUS CHEMISTRY ON THE PINATUBO AEROSOL SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID DEPLETION; ERUPTION AB Ozone profiles obtained at Boulder, Colorado and Wallops Island, Virginia indicate that ozone was about 25% below normal during the winter and spring of 1992-93 in the 12-22 km region. This large ozone reduction in the lower stratosphere, though sometimes partially compensated by higher than normal ozone above 24 km, was responsible for the low total column ozone values observed across the United States during this period. Normal temperatures throughout the low ozone region suggest that transport-related effects are probably not the most important cause of the ozone deficits. The region of low ozone at Boulder corresponds closely with the location of the enhanced H2SO4/H2O aerosol from the Pinatubo eruption of 1991 as measured near Boulder and at Laramie, Wyoming. Trajectory analyses suggest that except at low altitudes in spring, air parcels on the days of the ozone measurements generally arrived at Boulder from higher latitude, although seldom higher than 60-degrees-N, and hence may have been subjected to heterogeneous chemical processing on the surface of Pinatubo aerosol droplets resulting in chlorine-catalyzed ozone destruction, a process which is believed to be more effective under the lower winter temperatures and sunlight levels of higher latitudes. C1 NOAA,AERON LAB,BOULDER,CO 80303. UNIV WYOMING,DEPT PHYS & ASTRON,LARAMIE,WY 82071. NASA,GODDARD SPACE FLIGHT CTR,WALLOPS FLIGHT FACIL,WALLOPS ISL NAS,VA 23337. NIWA,DIV ATMOSPHER,CENT OTAGO,NEW ZEALAND. RP HOFMANN, DJ (reprint author), NOAA,CLIMATE MONITORING & DIAGNOST LAB,325 BROADWAY,BOULDER,CO 80303, USA. RI Langford, Andrew/D-2323-2009 OI Langford, Andrew/0000-0002-2932-7061 NR 21 TC 97 Z9 102 U1 1 U2 5 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JAN 1 PY 1994 VL 21 IS 1 BP 65 EP 68 DI 10.1029/93GL02526 PG 4 WC Geosciences, Multidisciplinary SC Geology GA MQ169 UT WOS:A1994MQ16900017 ER PT J AU MAHAJAN, KK GHOSH, S PAUL, R HOEGY, WR AF MAHAJAN, KK GHOSH, S PAUL, R HOEGY, WR TI VARIABILITY OF DAYSIDE ELECTRON-TEMPERATURE AT VENUS SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID PIONEER VENUS; MAGNETIC-FIELD; IONOSPHERE; IONOPAUSE; MODEL; LAYER; LIMIT AB Langmuir probe measurements on Pioneer Venus Orbiter show that electron temperature (Te) profiles exhibit two distinct regions. The lower, but more extended region is in the main ionosphere where Te increases slowly with altitude. The other, less extended region is in the ionopause, where Te rises sharply with altitude. If horizontal magnetic fields and flux ropes in the ionosphere inhibit vertical thermal conductivity sufficiently, then the observed Te profile could be explained with EUV as the major heat source [Cravens et al., 1980]. The rise in Te in the ionopause region has generally been attributed to solar wind heating [Brace and Kliore, 1991]. We suggest that this sharp rise in Te is due primarily to the steep fall in electron density, Ne. If the heating rate is essentially unchanged and heat conduction is not of primary importance, then a steep rise in Te will maintain a constant electron cooling rate for a steeply falling Ne. We have observed large orbit to orbit variations in Te in the ionopause region which are found to be inversely related to changes in Ne. Variations in solar wind dynamic pressure do not seem to have a direct effect on Te, rather the effect is indirect coming through the sharp decrease in Ne. C1 NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB,GREENBELT,MD 20771. RP MAHAJAN, KK (reprint author), NATL PHYS LAB,DIV RADIO SCI,NEW DELHI 110012,INDIA. NR 24 TC 8 Z9 8 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD JAN 1 PY 1994 VL 21 IS 1 BP 77 EP 80 DI 10.1029/93GL03384 PG 4 WC Geosciences, Multidisciplinary SC Geology GA MQ169 UT WOS:A1994MQ16900020 ER PT S AU HADAEGH, FY CHIANG, RY DIBATTISTA, J AF HADAEGH, FY CHIANG, RY DIBATTISTA, J BE Culp, RD Rausch, RD TI RECONFIGURABLE ROBUST-CONTROL SYNTHESIS FOR NONCOLOCATED SPACE STRUCTURE EXPERIMENT CONTROL SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 JET PROP LAB,PASADENA,CA 91109. 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 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 3 EP 14 PG 12 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00001 ER PT S AU ALHORN, DC POLITES, ME AF ALHORN, DC POLITES, ME BE Culp, RD Rausch, RD TI ROTATING UNBALANCED-MASS DEVICES FOR SCANNING - RESULTS FROM THE PROOF-OF-CONCEPT TEST SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,CONTROL ELECTR BRANCH,HUNTSVILLE,AL 35812. 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 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 15 EP 36 PG 22 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00002 ER PT S AU NEAT, GW LASKIN, RA REGNER, JW VONFLOTOW, AH AF NEAT, GW LASKIN, RA REGNER, JW VONFLOTOW, AH BE Culp, RD Rausch, RD TI ADVANCED ISOLATION PRECISION POINTING PLATFORM TESTBED FOR FUTURE SPACECRAFT MISSIONS SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 1 Z9 1 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 37 EP 54 PG 18 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00003 ER PT S AU BUKLEY, AP AF BUKLEY, AP BE Culp, RD Rausch, RD TI HUBBLE-SPACE-TELESCOPE POINTING CONTROL-SYSTEM DESIGN IMPROVEMENT STUDY RESULTS SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI & APPLICAT GRP,HUNTSVILLE,AL 35812. 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 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 69 EP 88 PG 20 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00005 ER PT S AU SHARKEY, JP WORTON, MS PATTERSON, AF AF SHARKEY, JP WORTON, MS PATTERSON, AF BE Culp, RD Rausch, RD TI SYSTEM-IDENTIFICATION OF THE CONTROLS-STRUCTURES INITIATIVE GROUND TEST FACILITY AT THE MARSHALL-SPACE-FLIGHT-CENTER SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 283 EP 291 PG 9 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00017 ER PT S AU NEEDELS, L REDDING, D NEAT, G AF NEEDELS, L REDDING, D NEAT, G BE Culp, RD Rausch, RD TI APPLICATIONS USING INTEGRATED MODELING TECHNIQUES SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 JET PROP LAB,PASADENA,CA 91109. 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 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 329 EP 329 PG 1 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00021 ER PT S AU BUKLEY, AP PATTERSON, AF ANDERSON, JB DRISKILL, TC SILLANPAA, MM AF BUKLEY, AP PATTERSON, AF ANDERSON, JB DRISKILL, TC SILLANPAA, MM BE Culp, RD Rausch, RD TI REDUCED GRAVITY MULTIBODY DYNAMICS TESTING SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 1 Z9 1 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 331 EP 342 PG 12 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00022 ER PT S AU STEPHENSON, RR BERNARD, DE AF STEPHENSON, RR BERNARD, DE BE Culp, RD Rausch, RD TI JPL MARS OBSERVER IN-FLIGHT ANOMALY INVESTIGATION, WITH EMPHASIS ON ATTITUDE-CONTROL ASPECTS SO GUIDANCE AND CONTROL 1994 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT Annual Rocky Mountain Guidance and Control Conference CY FEB 02-06, 1994 CL KEYSTONE, CO SP AMER ASTRONAUT SOC, ROCKY MT SECT C1 JET PROP LAB,OFF TECHNOL & APPLICAT PROGRAMS,PASADENA,CA 91109. 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 0-87703-385-4 J9 ADV ASTRONAUT SCI PY 1994 VL 86 BP 483 EP 503 PG 21 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Multidisciplinary SC Automation & Control Systems; Engineering GA BB14W UT WOS:A1994BB14W00033 ER PT B AU FARMER, JT HOWELL, JR AF FARMER, JT HOWELL, JR BE Hewitt, GF TI MONTE-CARLO ALGORITHM FOR PREDICTING RADIATIVE HEAT TRANSPORT IN OPTICALLY THICK PARTICIPATING MEDIA SO HEAT TRANSFER 1994 - PROCEEDINGS OF THE TENTH INTERNATIONAL HEAT TRANSFER CONFERENCE, VOL 2: RADIATION AND COMBUSTION - MEASUREMENT TECHNIQUES - NUMERICAL TECHNIQUES AND MODELLING SE INSTITUTION OF CHEMICAL ENGINEERS SYMPOSIUM SERIES LA English DT Proceedings Paper CT 10th International Heat Transfer Conference CY AUG 14-18, 1994 CL BRIGHTON, ENGLAND SP INST CHEM ENGINEERS, INST MECH ENGINEERS, UK HEAT TRANSFER SOC, UK NATL HEAT TRANSFER COMM C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 1 PU INST CHEMICAL ENGINEERS PI RUGBY PA GEORGE E DAVIS BLDG, 165-171 RAILWAY TERRACE, RUGBY, ENGLAND CV21 3HQ BN 0-85295-346-1 J9 INST CHEM E PY 1994 IS 135 BP 37 EP 42 PG 6 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA BC13G UT WOS:A1994BC13G00007 ER PT B AU SWENSON, HN ZELENKA, RE DEARING, MG HARDY, GH CLARK, R ZIRKLER, A DAVIS, T AMATRUDO, G AF SWENSON, HN ZELENKA, RE DEARING, MG HARDY, GH CLARK, R ZIRKLER, A DAVIS, T AMATRUDO, G BE Lewandowski, RJ Stephens, W Haworth, LA TI DESIGN AND FLIGHT EVALUATION OF VISUALLY-COUPLED SYMBOLOGY FOR INTEGRATED NAVIGATION AND NEAR-TERRAIN FLIGHT GUIDANCE SO HELMET- AND HEAD-MOUNTED DISPLAYS AND SYMBOLOGY DESIGN REQUIREMENTS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Helmet-Mounted and Head-Mounted Displays and Symbology Design Requirements CY APR 05-07, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-8194-1522-7 J9 P SOC PHOTO-OPT INS PY 1994 VL 2218 BP 161 EP 172 PG 12 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BA83S UT WOS:A1994BA83S00019 ER PT B AU HINDSON, WS NJAKA, CE AIKEN, EW BARNHART, WA AF HINDSON, WS NJAKA, CE AIKEN, EW BARNHART, WA BE Lewandowski, RJ Stephens, W Haworth, LA TI RASCAL HELMET-MOUNTED DISPLAY FLIGHT RESEARCH SO HELMET- AND HEAD-MOUNTED DISPLAYS AND SYMBOLOGY DESIGN REQUIREMENTS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Helmet-Mounted and Head-Mounted Displays and Symbology Design Requirements CY APR 05-07, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-8194-1522-7 J9 P SOC PHOTO-OPT INS PY 1994 VL 2218 BP 185 EP 195 PG 11 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BA83S UT WOS:A1994BA83S00021 ER PT B AU MARMOLEJO, JA AF MARMOLEJO, JA BE Lewandowski, RJ Stephens, W Haworth, LA TI HELMET-MOUNTED DISPLAY AND ASSOCIATED RESEARCH ACTIVITIES RECENTLY CONDUCTED BY THE NASA JOHNSON SPACE CENTER SO HELMET- AND HEAD-MOUNTED DISPLAYS AND SYMBOLOGY DESIGN REQUIREMENTS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Helmet-Mounted and Head-Mounted Displays and Symbology Design Requirements CY APR 05-07, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LYNDON B JOHNSON SPACE CTR,DIV CREW & THERMAL SYST,EVA EQUIPMENT BRANCH,HOUSTON,TX 77058. 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 0-8194-1522-7 J9 P SOC PHOTO-OPT INS PY 1994 VL 2218 BP 281 EP 291 PG 11 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BA83S UT WOS:A1994BA83S00031 ER PT B AU COPPENBARGER, RA AF COPPENBARGER, RA BE Lewandowski, RJ Stephens, W Haworth, LA TI HELMET-MOUNTED DISPLAY SYMBOLOGY FOR AUTOMATED NAP-OF-THE-EARTH ROTORCRAFT FLIGHT SO HELMET- AND HEAD-MOUNTED DISPLAYS AND SYMBOLOGY DESIGN REQUIREMENTS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Helmet-Mounted and Head-Mounted Displays and Symbology Design Requirements CY APR 05-07, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-8194-1522-7 J9 P SOC PHOTO-OPT INS PY 1994 VL 2218 BP 351 EP 360 PG 10 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BA83S UT WOS:A1994BA83S00037 ER PT S AU RAMATY, R MANDZHAVIDZE, N AF RAMATY, R MANDZHAVIDZE, N BE Ryan, JM Vestrand, WT TI THEORETICAL-MODELS FOR HIGH-ENERGY SOLAR-FLARE EMISSIONS SO HIGH-ENERGY SOLAR PHENOMENA - A NEW ERA OF SPACECRAFT MEASUREMENTS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Workshop on High-Energy Solar Phenomena - A New Era of Spacecraft Measurements CY MAR, 1993 CL WATERVILLE VALLEY, NH SP GODDARD SPACE FLIGHT CTR, COMPTON GAMMA RAY OBSERV PROJECT C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. NR 0 TC 7 Z9 7 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 1-56396-291-8 J9 AIP CONF PROC PY 1994 IS 294 BP 26 EP 44 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA54B UT WOS:A1994BA54B00004 ER PT S AU LAU, YT RAMATY, R AF LAU, YT RAMATY, R BE Ryan, JM Vestrand, WT TI TRAPPING OF PROTONS IN TWISTED MAGNETIC LOOPS SO HIGH-ENERGY SOLAR PHENOMENA - A NEW ERA OF SPACECRAFT MEASUREMENTS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Workshop on High-Energy Solar Phenomena - A New Era of Spacecraft Measurements CY MAR, 1993 CL WATERVILLE VALLEY, NH SP GODDARD SPACE FLIGHT CTR, COMPTON GAMMA RAY OBSERV PROJECT C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. NR 0 TC 1 Z9 1 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 1-56396-291-8 J9 AIP CONF PROC PY 1994 IS 294 BP 71 EP 73 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA54B UT WOS:A1994BA54B00010 ER PT S AU DINGUS, BL SREEKUMAR, P BERTSCH, DL FICHTEL, CE HARTMAN, RC HUNTER, SD THOMPSON, DJ SCHNEID, EJ BRAZIER, KTS KANBACH, G VONMONTIGNY, C MAYERHASSELWANDER, HA LIN, YC MICHELSON, PF NOLAN, PL KNIFFEN, DA MATTOX, JR AF DINGUS, BL SREEKUMAR, P BERTSCH, DL FICHTEL, CE HARTMAN, RC HUNTER, SD THOMPSON, DJ SCHNEID, EJ BRAZIER, KTS KANBACH, G VONMONTIGNY, C MAYERHASSELWANDER, HA LIN, YC MICHELSON, PF NOLAN, PL KNIFFEN, DA MATTOX, JR BE Ryan, JM Vestrand, WT TI EGRET OBSERVATION OF THE JUNE 30 AND JULY 2, 1991 ENERGETIC SOLAR-FLARES SO HIGH-ENERGY SOLAR PHENOMENA - A NEW ERA OF SPACECRAFT MEASUREMENTS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Workshop on High-Energy Solar Phenomena - A New Era of Spacecraft Measurements CY MAR, 1993 CL WATERVILLE VALLEY, NH SP GODDARD SPACE FLIGHT CTR, COMPTON GAMMA RAY OBSERV PROJECT C1 UNIV SPACE RES ASSOC,NASA,GSFC,GREENBELT,MD 20771. RI Hunter, Stanley/D-2942-2012; Thompson, David/D-2939-2012 OI Thompson, David/0000-0001-5217-9135 NR 0 TC 1 Z9 1 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 1-56396-291-8 J9 AIP CONF PROC PY 1994 IS 294 BP 177 EP 182 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA54B UT WOS:A1994BA54B00025 ER PT S AU DENNIS, BR EMSLIE, AG CANFIELD, R DOSCHEK, G LIN, RP RAMATY, R AF DENNIS, BR EMSLIE, AG CANFIELD, R DOSCHEK, G LIN, RP RAMATY, R BE Ryan, JM Vestrand, WT TI THE NASA HIGH-ENERGY SOLAR PHYSICS MISSION (HESP) SO HIGH-ENERGY SOLAR PHENOMENA - A NEW ERA OF SPACECRAFT MEASUREMENTS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Workshop on High-Energy Solar Phenomena - A New Era of Spacecraft Measurements CY MAR, 1993 CL WATERVILLE VALLEY, NH SP GODDARD SPACE FLIGHT CTR, COMPTON GAMMA RAY OBSERV PROJECT C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. RI Dennis, Brian/C-9511-2012 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 1-56396-291-8 J9 AIP CONF PROC PY 1994 IS 294 BP 230 EP 243 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA54B UT WOS:A1994BA54B00032 ER PT B AU ASTHANA, R TEWARI, SN BOWMAN, RR AF ASTHANA, R TEWARI, SN BOWMAN, RR BE Chawla, KK Liaw, PK Fishman, SG TI INFLUENCE OF FABRICATION TECHNIQUE AND MATRIX ALLOYING ON THE INTERFACIAL SHEAR STRENGTH OF SAPPHIRE-NIAL COMPOSITES SO HIGH PERFORMANCE COMPOSITES: COMMONALTY OF PHENOMENA LA English DT Proceedings Paper CT International Symposium on High Performance Composites - Commonalty of Phenomena, at the Materials Week CY OCT 02-06, 1994 CL ROSEMONT, IL SP MINERALS MAT & MET SOC, ASM INT C1 NASA,LEWIS RES CTR,DIV MAT,CLEVELAND,OH 44135. NR 0 TC 3 Z9 3 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-247-7 PY 1994 BP 21 EP 33 PG 13 WC Materials Science, Composites SC Materials Science GA BC23U UT WOS:A1994BC23U00002 ER PT B AU HANEBUTTE, UR QUIRK, JJ AF HANEBUTTE, UR QUIRK, JJ BE Tentner, AM TI SIMULATING COMPLEX SHOCK-WAVE PHENOMENA USING A MESSAGE-PASSING ENVIRONMENT SO HIGH PERFORMANCE COMPUTING SYMPOSIUM 1994: GRAND CHALLENGES IN COMPUTER SIMULATION LA English DT Proceedings Paper CT 1994 Simulation MultiConference features the 2nd High Performance Computing Symposium, with the theme Grand Challenges in Computer Simulation CY APR 10-15, 1994 CL SAN DIEGO, CA SP SOC COMP SIMULAT C1 NASA,LANGLEY RES CTR,INST COMP APPLICAT SCI & ENGN,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC COMPUTER SIMULATION INT PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92177 BN 1-56555-073-0 PY 1994 BP 92 EP 97 PG 6 WC Computer Science, Interdisciplinary Applications SC Computer Science GA BA96S UT WOS:A1994BA96S00016 ER PT B AU ROSS, MD CHENG, R DOSHAY, DG LINTON, SW MONTGOMERY, K PARNAS, BR AF ROSS, MD CHENG, R DOSHAY, DG LINTON, SW MONTGOMERY, K PARNAS, BR BE Tentner, AM TI HIGH-PERFORMANCE COMPUTING APPLICATIONS IN NEUROBIOLOGICAL RESEARCH SO HIGH PERFORMANCE COMPUTING SYMPOSIUM 1994: GRAND CHALLENGES IN COMPUTER SIMULATION LA English DT Proceedings Paper CT 1994 Simulation MultiConference features the 2nd High Performance Computing Symposium, with the theme Grand Challenges in Computer Simulation CY APR 10-15, 1994 CL SAN DIEGO, CA SP SOC COMP SIMULAT C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 1 Z9 3 U1 0 U2 0 PU SOC COMPUTER SIMULATION INT PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92177 BN 1-56555-073-0 PY 1994 BP 120 EP 125 PG 6 WC Computer Science, Interdisciplinary Applications SC Computer Science GA BA96S UT WOS:A1994BA96S00021 ER PT B AU MICELI, KD AF MICELI, KD BE Tentner, AM TI INTELLIGENT SCIENTIFIC VISUALIZATION FOR COMPUTATIONAL AEROSCIENCES SO HIGH PERFORMANCE COMPUTING SYMPOSIUM 1994: GRAND CHALLENGES IN COMPUTER SIMULATION LA English DT Proceedings Paper CT 1994 Simulation MultiConference features the 2nd High Performance Computing Symposium, with the theme Grand Challenges in Computer Simulation CY APR 10-15, 1994 CL SAN DIEGO, CA SP SOC COMP SIMULAT C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC COMPUTER SIMULATION INT PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92177 BN 1-56555-073-0 PY 1994 BP 351 EP 356 PG 6 WC Computer Science, Interdisciplinary Applications SC Computer Science GA BA96S UT WOS:A1994BA96S00057 ER PT J AU HERGENROTHER, PM CONNELL, JW LABADIE, JW HEDRICK, JL AF HERGENROTHER, PM CONNELL, JW LABADIE, JW HEDRICK, JL TI POLY(ARYLENE ETHER)S CONTAINING HETEROCYCLIC UNITS SO HIGH PERFORMANCE POLYMERS SE ADVANCES IN POLYMER SCIENCE LA English DT Review ID KETONE-X POLYMERS; BLOCK COPOLYMERS; PHYSICAL-PROPERTIES; CONNECTING GROUPS; POLYMERIZATION; POLYIMIDES; CHEMISTRY; CARBONYL AB Since 1985, a major effort has been devoted to incorporating heterocyclic units within the backbone of poly(arylene ether)s (PAE). Heterocyclic units within PAE generally improve certain properties such as strength, modulus and the glass transition temperature. Nucleophilic and electrophilic aromatic substitution have been successfully used to prepare a variety of PAE containing heteorcyclic units. Many different heterocyclic families have been incorporated within PAE. The synthetic approaches and the chemistry, mechanical and physical properties of PAE containing different families of heterocyclic units are discussed. Emphasis is placed on the effect variations in chemical structure (composition) have upon polymer properties. C1 IBM CORP,ALMADEN RES CTR,SAN JOSE,CA 95120. RP HERGENROTHER, PM (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23681, USA. NR 63 TC 38 Z9 38 U1 2 U2 11 PU SPRINGER-VERLAG BERLIN PI BERLIN 33 PA HEIDELBERGER PLATZ 3, W-1000 BERLIN 33, GERMANY SN 0065-3195 J9 ADV POLYM SCI PY 1994 VL 117 BP 67 EP 110 PG 44 WC Polymer Science SC Polymer Science GA BC06H UT WOS:A1994BC06H00002 ER PT B AU JAVADI, HHS BARNER, JB BAUTISTA, JJ BHASIN, KB BOWEN, JG CHEW, W CHOREY, CM FOOTE, MC FUJIWARA, BH GUERN, AJ HUNT, BD LEONARD, RF ORTIZ, GG RASCOE, DL ROMANOFSKY, RR VASQUEZ, RP WAMHOF, PD AF JAVADI, HHS BARNER, JB BAUTISTA, JJ BHASIN, KB BOWEN, JG CHEW, W CHOREY, CM FOOTE, MC FUJIWARA, BH GUERN, AJ HUNT, BD LEONARD, RF ORTIZ, GG RASCOE, DL ROMANOFSKY, RR VASQUEZ, RP WAMHOF, PD BE Hammond, RB Withers, RS TI LOW-NOISE HYBRID SUPERCONDUCTOR SEMICONDUCTOR 7.4 GHZ RECEIVER DOWNCONVERTER FOR NASA SPACE APPLICATIONS SO HIGH-T(C) MICROWAVE SUPERCONDUCTORS AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on High-T(c) Microwave Superconductors and Applications CY JAN 26-27, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1451-4 J9 P SOC PHOTO-OPT INS PY 1994 VL 2156 BP 101 EP 106 DI 10.1117/12.166145 PG 6 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BZ74Q UT WOS:A1994BZ74Q00012 ER PT B AU FOOTE, MC JOHNSON, BR HUNT, BD AF FOOTE, MC JOHNSON, BR HUNT, BD BE Nahum, M Villegier, JC TI TRANSITION EDGE YBA2CU3O7-X MICROBOLOMETERS FOR INFRARED STARING ARRAYS SO HIGH-TEMPERATURE SUPERCONDUCTING DETECTORS: BOLOMETRIC AND NONBOLOMETRIC SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on High-Temperature Superconducting Detectors: Bolometric and Nonbolometric CY JAN 25-26, 1994 CL LOS ANGELES, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. NR 0 TC 16 Z9 16 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1454-9 J9 P SOC PHOTO-OPT INS PY 1994 VL 2159 BP 2 EP 9 DI 10.1117/12.176130 PG 8 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA61H UT WOS:A1994BA61H00001 ER PT B AU GILLE, J SAMADANI, R MARTIN, R LARIMER, J AF GILLE, J SAMADANI, R MARTIN, R LARIMER, J BE Rogowitz, BE Allebach, JP TI GRAYSCALE RESOLUTION TRADEOFF SO HUMAN VISION, VISUAL PROCESSING, AND DIGITAL DISPLAY V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Human Vision, Visual Processing, and Digital V CY FEB 08-10, 1994 CL SAN JOSE, CA SP SOC IMAGING SCI & TECHNOL, SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,WESTERN AGROSP LABS,MOFFETT FIELD,CA 94035. 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 0-8194-1474-3 J9 P SOC PHOTO-OPT INS PY 1994 VL 2179 BP 47 EP 59 DI 10.1117/12.172697 PG 13 WC Computer Science, Artificial Intelligence; Ophthalmology; Optics SC Computer Science; Ophthalmology; Optics GA BA43T UT WOS:A1994BA43T00006 ER PT B AU WATSON, AB SOLOMON, JA AHUMADA, A AF WATSON, AB SOLOMON, JA AHUMADA, A BE Rogowitz, BE Allebach, JP TI DCT BASIS FUNCTION VISIBILITY - EFFECTS OF VIEWING DISTANCE AND CONTRAST MASKING SO HUMAN VISION, VISUAL PROCESSING, AND DIGITAL DISPLAY V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Human Vision, Visual Processing, and Digital V CY FEB 08-10, 1994 CL SAN JOSE, CA SP SOC IMAGING SCI & TECHNOL, SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,AMES RES CTR,MS 262-2,MOFFETT FIELD,CA 94035. 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 0-8194-1474-3 J9 P SOC PHOTO-OPT INS PY 1994 VL 2179 BP 99 EP 108 DI 10.1117/12.172661 PG 10 WC Computer Science, Artificial Intelligence; Ophthalmology; Optics SC Computer Science; Ophthalmology; Optics GA BA43T UT WOS:A1994BA43T00011 ER PT B AU AHUMADA, AJ HORNG, R AF AHUMADA, AJ HORNG, R BE Rogowitz, BE Allebach, JP TI DE-BLOOCKING DCT COMPRESSED IMAGES SO HUMAN VISION, VISUAL PROCESSING, AND DIGITAL DISPLAY V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Human Vision, Visual Processing, and Digital V CY FEB 08-10, 1994 CL SAN JOSE, CA SP SOC IMAGING SCI & TECHNOL, SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,AMES RES CTR,HUMAN INTERFACE RES BRANCH,MOFFETT FIELD,CA 94035. 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 0-8194-1474-3 J9 P SOC PHOTO-OPT INS PY 1994 VL 2179 BP 109 EP 116 PG 8 WC Computer Science, Artificial Intelligence; Ophthalmology; Optics SC Computer Science; Ophthalmology; Optics GA BA43T UT WOS:A1994BA43T00012 ER PT J AU VEVERKA, J BELTON, M KLAASEN, K CHAPMAN, C AF VEVERKA, J BELTON, M KLAASEN, K CHAPMAN, C TI GALILEO ENCOUNTER WITH 951-GASPRA - OVERVIEW SO ICARUS LA English DT Article AB On 29 October 1991, the Galileo spacecraft carried out the first ever encounter of a minor planet, flying by Asteroid 951 Gaspra at a distance of 1600 km. We summarize findings derived from the 57 images obtained by Galileo's SSI camera which cover about 80% of the surface of this S-asteroid. The highest resolution achieved was 54 m/pixel. The analysis of the imaging data is described in the series of papers making up this special issue of Icarus. Gaspra is a highly irregular body with principal diameters of 18.2, 10.5, and 8.9 km (average radius = 6.1 +/- 0.4 km). Gaspra's irregular shape and the prominence of grooves, linear depressions 100-300 m wide and tens of meters deep, suggest that the asteroid was derived from a larger body by catastrophic collision. Features that appear to reflect structural grain, including ridges, grooves, and flat surfaces, suggest that Gaspra is a single coherent body and not a binary or a ''rubble pile.'' Craters on Gaspra can be divided into two categories: a very subdued, apparently older, population and a population of much crisper (younger?) craters. The latter is characterized by an index (exponent of the power law describing the cumulative distribution of craters as a function of diameter) of - 3.1 +/- 0.3, definitely steeper than the theoretically derived value of - 2.5 expected for collisional equilibrium. Estimates of the cratering age of Gaspra's surface give very young values ranging from 20 to 300 myr. Estimated characteristic times for the collisional disruption of Gaspra-sized bodies at 2.2 AU range from 200 to 1000 myr. Analysis of spectral imaging data (0.40 to 1.10 mum) reveals small but significant color variations over the asteroid's surface. The spectrally most distinct materials on Gaspra are distinguished by a more prominent 1-mum absorption band and tend to be slightly brighter and bluer than average Gaspra. Often such materials are associated with small, fresh-appearing craters along ridges. A strong correlation exists between the infrared/violet color ratio and elevations on Gaspra, a correlation which can be explained in terms of downhill migration of a regolith. Gaspra's photometric properties are lunar-like, but with higher values of omega0BAR and thetaBAR (0.36 and 29-degrees, respectively). The average geometric albedo is 0.23 near 0. 56 mum. An important result is the confirmation that pre-Galileo inferences from telescopic observations about Gaspra's size, shape, albedo, and rotation state are accurate. (C) 1994 Academic Press, Inc. C1 KITT PEAK NATL OBSERV,FLAGSTAFF,AZ. JET PROP LAB,PASADENA,CA 91109. PLANETARY SCI INST,TUCSON,AZ 85704. RP VEVERKA, J (reprint author), CORNELL UNIV,ITHACA,NY 14853, USA. NR 29 TC 44 Z9 46 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 2 EP 17 DI 10.1006/icar.1994.1002 PG 16 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600002 ER PT J AU HELFENSTEIN, P VEVERKA, J THOMAS, PC SIMONELLI, DP LEE, P KLAASEN, K JOHNSON, TV BRENEMAN, H HEAD, JW MURCHIE, S FANALE, F ROBINSON, M CLARK, B GRANAHAN, J GARBEIL, H MCEWEN, AS KIRK, RL DAVIES, M NEUKUM, G MOTTOLA, S WAGNER, R BELTON, M CHAPMAN, C PILCHER, C AF HELFENSTEIN, P VEVERKA, J THOMAS, PC SIMONELLI, DP LEE, P KLAASEN, K JOHNSON, TV BRENEMAN, H HEAD, JW MURCHIE, S FANALE, F ROBINSON, M CLARK, B GRANAHAN, J GARBEIL, H MCEWEN, AS KIRK, RL DAVIES, M NEUKUM, G MOTTOLA, S WAGNER, R BELTON, M CHAPMAN, C PILCHER, C TI GALILEO PHOTOMETRY OF ASTEROID 951-GASPRA SO ICARUS LA English DT Article ID BIDIRECTIONAL REFLECTANCE SPECTROSCOPY; OPTICAL-PROPERTIES; LUNAR AB Galileo images of Gaspra make it possible for the first time to determine a main-belt asteroid's photometric properties accurately by providing surface-resolved coverage over a wide range of incidence and emission angles and by extending the phase angle coverage to phases not observable from Earth. We combine Earth-based telescopic photometry over phase angles 2-degrees less-than-or-equal-to alpha less-than-or-equal-to 25-degrees with Galileo whole-disk and disk-resolved data at 33-degrees less-than-or-equal-to alpha less-than-or-equal-to 51-degrees to derive average global photometric properties in terms of Hapke's photometric model. The microscopic texture and particle phase-function behavior of Gaspra's surface are remarkably like those of other airless rocky bodies such as the Moon. The macroscopic surface roughness parameter, thetaBAR = 29-degrees, is slightly larger than that reported for typical lunar materials. The particle single scattering albedo, omega0BAR = 0.36 +/- 0. 07, is significantly larger than for lunar materials, and the opposition surge amplitude, B0 = 1.63 +/- 0.07, is correspondingly smaller. We determine a visual geometric albedo p(v) = 0.22 +/- 0.06 for Gaspra, in close agreement with p(v) = 0.22 +/- 0.03 estimated from Earth-based observations. Gaspra's phase integral is 0.47, and the bolometric Bond albedo is estimated to be 0.12 +/- 0.03. An albedo map derived by correcting Galileo images with our average global photometric function reveals subdued albedo contrasts of +/- 10% or less over Gaspra's northern hemisphere. Several independent classification algorithms confirm the subtle spectral heterogeneity reported earlier (S. Mottola, M. DiMartino, M. Gonano-Beurer, H. Hoffman, and G. Neukum, 1993, Asteroids, Comets, Meteors, pp. 421-424; M. J. S. Belton et al., 1992, Science 257, 1647-1652). Whole-disk colors (0.41 less-than-or-equal-to lambda less-than-or-equal-to 0.99 mum) vary systematically with longitude by about +/- 5%, but color differences as large as 30% occur locally. Colors vary continuously between end-member materials whose areal distribution correlates with regional topography. Infrared: violet (0.99:0.41-mum) color ratios on Gaspra are strongly correlated with local elevation, being largest at lower elevations and smaller at higher elevations. No correlation was detected between elevation and the green: violet (0.56:0.41-mum) color ratio. Bright materials with a strong 1-mum absorption occur primarily in association with craters along ridges, while darker materials with 30% weaker 1-mum signatures occur downslope. The variations of color and albedo cannot be easily explained by grain-size effects alone or by differences in photometric geometry. The trends observed are consistent with those revealed by laboratory studies of the effects of comminution, glass formation, and segregation of metal from silicate components in chondritic meteorites and also in some silicate mixtures. The relative importance of these various processes on Gaspra remains to be determined. (C) 1994 Academic Press, Inc. C1 JET PROP LAB,PASADENA,CA 91109. BROWN UNIV,PROVIDENCE,RI 02912. UNIV HAWAII,HONOLULU,HI 96822. US GEOL SURVEY,FLAGSTAFF,AZ 86001. RAND CORP,SANTA MONICA,CA 90406. DEUTSCH LUFT & RAUMFAHRT,BERLIN,GERMANY. NATL OPT ASTRON OBSERV,KITT PEAK NATL OBSERV,TUCSON,AZ 85719. UNIV ARIZONA,SAIC,INST PLANETARY SCI,TUCSON,AZ 85719. NASA,WASHINGTON,DC 20546. RP HELFENSTEIN, P (reprint author), CORNELL UNIV,ITHACA,NY 14853, USA. RI Murchie, Scott/E-8030-2015 OI Murchie, Scott/0000-0002-1616-8751 NR 48 TC 104 Z9 104 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 37 EP 60 DI 10.1006/icar.1994.1005 PG 24 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600005 ER PT J AU VEVERKA, J THOMAS, P SIMONELLI, D BELTON, MJS CARR, M CHAPMAN, C DAVIES, ME GREELEY, R GREENBERG, R HEAD, J KLAASEN, K JOHNSON, TV MORRISON, D NEUKUM, G AF VEVERKA, J THOMAS, P SIMONELLI, D BELTON, MJS CARR, M CHAPMAN, C DAVIES, ME GREELEY, R GREENBERG, R HEAD, J KLAASEN, K JOHNSON, TV MORRISON, D NEUKUM, G TI DISCOVERY OF GROOVES ON GASPRA SO ICARUS LA English DT Article ID PHOBOS; SURFACE; DEIMOS AB We report the discovery of grooves in Galileo high-resolution images of Gaspra. These features, previously seen only on Mars' satellite Phobos, are most likely related to severe impacts. Grooves on Gaspra occur as linear and pitted depressions, typically 100-200 m wide, 0.8 to 2.5 km long, and 10-20 m deep. Most occur in two major groups, one of which trends approximately parallel to the asteroid's long axis, but is offset by some 15-degrees; the other is approximately perpendicular to this trend. The first of these directions falls along a family of planes which parallel three extensive flat facets identified by Thomas et al., Icarus 107. The occurrence of grooves on Gaspra is consistent with other indications (irregular shape, cratering record) that this asteroid has evolved through a violent collisional history. The bodywide congruence of major groove directions and other structural elements suggests that present-day Gaspra is a globally coherent body. (C) 1994 Academic Press, Inc. C1 NATL OPT ASTRON OBSERV,TUCSON,AZ 85719. US GEOL SURVEY,MENLO PK,CA 94025. PLANETARY SCI INST,TUCSON,AZ 85719. RAND CORP,SANTA MONICA,CA 90406. ARIZONA STATE UNIV,DEPT GEOL,TEMPE,AZ 85287. UNIV ARIZONA,LUNAR & PLANETARY LAB,TUCSON,AZ 85721. BROWN UNIV,DEPT GEOL,PROVIDENCE,RI 02912. JET PROP LAB,PASADENA,CA 91109. NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. DEUTSCH FORSCHUNGSANSTALT LUFT & RAUMFAHRT,W-8031 OBERPFAFFENHOFEN,GERMANY. RP VEVERKA, J (reprint author), US GEOL SURVEY,DEPT ASTRON,MENLO PK,CA 94025, USA. NR 25 TC 38 Z9 38 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 72 EP 83 DI 10.1006/icar.1994.1007 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600007 ER PT J AU BENZ, W ASPHAUG, E AF BENZ, W ASPHAUG, E TI IMPACT SIMULATIONS WITH FRACTURE .1. METHOD AND TESTS SO ICARUS LA English DT Article AB We describe a new numerical tool based on the smooth particle hydrodynamics (SPH) method which is aimed at modeling impacts and collisions involving small solid objects. Our goal is to develop a suitable tool for the study of strength-dominated interactions between solid bodies. Although giant impacts have recently received most of the attention, collisions and/or impacts involving small (less-than-or-equal-to 50 km) objects are (and have been) the most frequent ones. We intend to apply this model to such studies as the formation of asteroid families, the disruption of ringmoons, the accretion of planetesimals, and spallation from large cratering events. In this first paper in a series, we present all physical and numerical aspects of our model as well as a number of tests performed in order to validate our method. We adopt a strength model and implement a von Mises yielding relation for stresses beyond the Hugoniot elastic limit. At the lower stresses associated with brittle failure, we use a rate-dependent strength based on the nucleation of Weibull flaws. Our model propagates statistical cracks at the subparticle scale based on the model of Grady and Kipp (1980) and resolves real cracks in a resolution-independent manner. Our method ensures that increases in resolution do not alter the fracture physics, only the accuracy. The resulting system predicts the shapes, locations, and velocities of the largest fragments in simulated laboratory impact events with unprecedented accuracy. (C) 1994 Academic Press, Inc. C1 UNIV ARIZONA,LUNAR & PLANETARY LAB,TUCSON,AZ 85721. NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RP BENZ, W (reprint author), UNIV ARIZONA,STEWARD OBSERV,TUCSON,AZ 85721, USA. NR 24 TC 156 Z9 156 U1 1 U2 11 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 98 EP 116 DI 10.1006/icar.1994.1009 PG 19 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600009 ER PT J AU BORDERIESRAPPAPORT, N LONGARETTI, PY AF BORDERIESRAPPAPORT, N LONGARETTI, PY TI TEST PARTICLE MOTION AROUND AN OBLATE PLANET SO ICARUS LA English DT Article ID URANIAN RINGS; ORBITS AB Ring flow kinematic features, such as, e.g., the shape of the narrow rings of Uranus or the streamlines of density waves of Saturn's rings, can be analyzed by fitting ring occultation data with m-lobe shapes with constant elements and constant precession rates. The orbital parameters thus obtained (e.g., the semimajor axis, the eccentricity) are usually referred to as geometric elements. This approach raises some questions of principle: how are these geometric elements defined? Why is it justified to apply elliptic formulae (in data analyses) and Gauss perturbation equations (in theoretical analyses) to these geometric elements? In our previous papers on these issues (N. Borderies and P. Y. Longaretti, 1987, Icarus 72, 593-603, P. Y. Longaretti and N. Borderies, 1991, Icarus 94, 165-170), we have resolved these questions by showing that the geometric elements are in fact appropriately chosen epicyclic elements, and that the epicyclic formulae and perturbation equations are formally nearly identical to the more familiar elliptic theory. This paper addresses various issues that were not considered in the previous papers. First, the epicyclic solution is extended to nonequatorial motions. Second, the lowest order amplitude corrections to the frequencies of the motion are computed. These corrections allow us to derive the correct contributions to order e2J2 and I2J2 to the orbital precession rates. Also, an expression of a third nonclassical quasi-integral of the motion in a flattened axisymmetric potential is provided from the work of G. Contopoulos (1960, Zeit. fur Astrophys. 49, 273-291). This third integral is a generalization of the energy in radial oscillations. Finally, the perturbation equations of the epicyclic elements are derived. These results are important for the determination of weak dynamical effects in planetary ring systems. (C) 1994 Academic Press, Inc. C1 OBSERV MIDI PYRENEES,F-31400 TOULOUSE,FRANCE. OBSERV GRENOBLE,F-38041 GRENOBLE,FRANCE. RP BORDERIESRAPPAPORT, N (reprint author), JET PROP LAB,301-150,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 22 TC 30 Z9 30 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 129 EP 141 DI 10.1006/icar.1994.1011 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600011 ER PT J AU BULLOCK, MA STOKER, CR MCKAY, CP ZENT, AP AF BULLOCK, MA STOKER, CR MCKAY, CP ZENT, AP TI A COUPLED SOIL ATMOSPHERE MODEL OF H2O2 ON MARS SO ICARUS LA English DT Article ID MARTIAN ATMOSPHERE; LIFE; SHERGOTTITES; STABILITY; EVOLUTION; RELEASE; ORIGIN; SEARCH; ICE AB The Viking Gas Chromatograph Mass Spectrometer failed to detect organic compounds on Mars, and both the Viking Labeled Release and the Viking Gas Exchange experiments indicated a reactive soil surface. These results have led to the widespread belief that there are oxidants in the martian soil. Since H2O2 is produced by photochemical processes in the atmosphere of Mars, and has been shown in the laboratory to reproduce closely the Viking LR results, it is a likely candidate for a martian soil oxidant. Here, we report on the results of a coupled soil/atmosphere transport model for H2O2 on Mars. Upon diffusing into the soil, its concentration is determined by the extent to which it is adsorbed and by the rate at which it is catalytically destroyed. An analytical model for calculating the distribution of H2O2 in the martian atmosphere and soil is developed. The concentration of H2O2 in the soil is shown to go to zero at a finite depth, a consequence of the nonlinear soil diffusion equation. The model is parameterized in terms of an unknown quantity, the lifetime of H2O2 against heterogeneous catalytic destruction in the soil. Calculated concentrations are compared with a H2O2 concentration of 30 nmoles/cm3, inferred from the Viking Labeled Release experiment. A significant result of this model is that for a wide range of H2O2 lifetimes (up to 10(5) years), the extinction depth was found to be less than 3 m. The maximum possible concentration in the top 4 cm is calculated to be approximately 240 nmoles/cm3, achieved with lifetimes of greater than 1000 years. Concentrations higher than 30 nmoles/cm3 require lifetimes of greater than 4.3 terrestrial years. For a wide range of H2O2 lifetimes, it was found that the atmospheric concentration is only weakly coupled with soil loss processes. Losses to the soil become significant only when lifetimes are less than a few hours. If there are depths below which H2O2 is not transported, it is plausible that organic compounds, protected from an oxidizing environment, may still exist. They would have been deposited by meteors, or be the organic remains of past life. (C) 1994 Academic Press, Inc. C1 NASA,AMES RES CTR,DIV SPACE SCI,MOFFETT FIELD,CA 94035. RP BULLOCK, MA (reprint author), UNIV COLORADO,ATMOSPHER & SPACE PHYS LAB,CAMPUS BOX 392,BOULDER,CO 80309, USA. FU NCI NIH HHS [NCA2-427] NR 41 TC 104 Z9 104 U1 1 U2 19 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 142 EP 154 DI 10.1006/icar.1994.1012 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600012 PM 11539124 ER PT J AU NUTH, JA BERG, O FARIS, J WASILEWSKI, P AF NUTH, JA BERG, O FARIS, J WASILEWSKI, P TI MAGNETICALLY ENHANCED COAGULATION OF VERY SMALL IRON GRAINS SO ICARUS LA English DT Article ID SOLAR NEBULA; CHONDRULES; ORIGIN; DUST AB Laboratory experiments, in which very small (approximately 20 nm) grains are produced in the presence of a magnetic field on the order of 100 Gauss in a low-pressure hydrogen atmosphere, have demonstrated that such smokes can become permanently magnetized. We show that magnetization results in an enormous enhancement in the coagulation efficiency of such materials even in the absence of external magnetic fields. Small iron grains should have been produced in the solar nebula by thermal processing of preexisting interstellar grains. If such processing occurred via high-energy electromagnetic events then the resultant magnetized grains could have triggered the formation of centimeter- to meter-sized protoplanetessimals by acting as ''nets'' capable of sweeping up nonconductive silicates suspended in the gas. It is possible that the presence of conductive fractal aggregates observed in modem-day protostellar disks could be explained by the enhanced coagulation efficiency of very small magnetized iron particles. (C) 1994 Academic Press, Inc. C1 CALVERT INST,PORT REPUBLIC,MD 20676. RP NUTH, JA (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ASTROCHEM BRANCH,CODE 691,GREENBELT,MD 20771, USA. RI Nuth, Joseph/E-7085-2012 NR 32 TC 28 Z9 29 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 155 EP 163 DI 10.1006/icar.1994.1013 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600013 ER PT J AU HARRIS, AW AF HARRIS, AW TI TUMBLING ASTEROIDS SO ICARUS LA English DT Note ID LIGHTCURVE OBSERVATIONS; HALLEY; ROTATION AB J. A. Bums and V. S. Safronov (Mon. Not. R. Astron. Soc. 165, 403-411,1973) estimated the damping time scale of rotational wobble for asteroids, and concluded that all asteroid rotations then known should be damped to a state of principal-axis rotation about the axis of maximum moment of inertia. I have reexamined this question in the light of some more recently determined cases of very slow rotation rates and find that for several asteroids, the damping time scale is expected to be considerably longer than the age of the Solar System, implying that these objects may very well exhibit non-principal-axis rotation, which in an extreme case of a large amplitude wobble of a very irregularly shaped body may lead to the appearance of nearly irregular ''tumbling'' in space. Perhaps most notable in this group is the asteroid 4179 Toutatis. Both radar observations (Ostro et al., Bul. Amer. Astron. Soc. 25, 1126, 1993) and tightcurve observations (M. A. Barucci, J. R. Spencer, personal communications 1993) suggest that Toutatis may indeed be in a more complex state of rotational motion than simple principal-axis rotation. I mention several other examples of objects which might be expected to be in similar states and a couple of examples of lightcurve observations of such objects that appear to support that conclusion. (C) 1994 Academic Press, Inc. RP HARRIS, AW (reprint author), JET PROP LAB,MS 183-501,PASADENA,CA 91109, USA. NR 17 TC 126 Z9 126 U1 2 U2 4 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1994 VL 107 IS 1 BP 209 EP 211 DI 10.1006/icar.1994.1017 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA NA626 UT WOS:A1994NA62600017 ER PT S AU WATSON, AB AF WATSON, AB GP IEEE IEEE IEEE TI PERCEPTUAL OPTIMIZATION OF DCT COLOR QUANTIZATION MATRICES SO ICIP-94 - PROCEEDINGS, VOL I SE IEEE International Conference on Image Processing ICIP LA English DT Proceedings Paper CT 1994 IEEE International Conference on Image Processing (ICIP-94) CY NOV 13-16, 1994 CL AUSTIN, TX SP IEEE, SIGNAL PROC SOC C1 NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. NR 0 TC 23 Z9 26 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 USA SN 1522-4880 BN 0-8186-6952-7 J9 IEEE IMAGE PROC PY 1994 BP 100 EP 104 PG 5 WC Computer Science, Artificial Intelligence; Computer Science, Software Engineering; Engineering, Biomedical; Remote Sensing; Optics SC Computer Science; Engineering; Remote Sensing; Optics GA BC13C UT WOS:A1994BC13C00021 ER PT B AU SUL, S AHUJA, N AF SUL, S AHUJA, N GP IEEE TI ESTIMATION AND SEGMENTATION OF DISPLACEMENT FIELD USING MULTIPLE FEATURES SO ICIP-94 - PROCEEDINGS, VOL III LA English DT Proceedings Paper CT 1994 IEEE International Conference on Image Processing (ICIP-94) CY NOV 13-16, 1994 CL AUSTIN, TX SP IEEE, SIGNAL PROC SOC C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-8186-6952-7 J9 IEEE IMAGE PROC PY 1994 BP 53 EP 57 PG 5 WC Computer Science, Artificial Intelligence; Computer Science, Software Engineering; Engineering, Biomedical; Optics SC Computer Science; Engineering; Optics GA BC13E UT WOS:A1994BC13E00012 ER PT B AU BURL, MC FAYYAD, UM PERONA, P SMYTH, P AF BURL, MC FAYYAD, UM PERONA, P SMYTH, P GP IEEE TI AUTOMATED ANALYSIS OF RADAR IMAGERY OF VENUS - HANDLING LACK OF GROUND TRUTH SO ICIP-94 - PROCEEDINGS, VOL III LA English DT Proceedings Paper CT 1994 IEEE International Conference on Image Processing (ICIP-94) CY NOV 13-16, 1994 CL AUSTIN, TX SP IEEE, SIGNAL PROC SOC C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 3 Z9 3 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 0-8186-6952-7 J9 IEEE IMAGE PROC PY 1994 BP 236 EP 240 PG 5 WC Computer Science, Artificial Intelligence; Computer Science, Software Engineering; Engineering, Biomedical; Optics SC Computer Science; Engineering; Optics GA BC13E UT WOS:A1994BC13E00049 ER PT B AU CHIEN, SA AF CHIEN, SA GP IEEE TI AUTOMATED SYNTHESIS OF IMAGE PROCESSING PROCEDURES FOR A LARGE-SCALE IMAGE DATABASE SO ICIP-94 - PROCEEDINGS, VOL III LA English DT Proceedings Paper CT 1994 IEEE International Conference on Image Processing (ICIP-94) CY NOV 13-16, 1994 CL AUSTIN, TX SP IEEE, SIGNAL PROC SOC C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8186-6952-7 J9 IEEE IMAGE PROC PY 1994 BP 796 EP 800 PG 5 WC Computer Science, Artificial Intelligence; Computer Science, Software Engineering; Engineering, Biomedical; Optics SC Computer Science; Engineering; Optics GA BC13E UT WOS:A1994BC13E00164 ER PT B AU LIENEWEG, U ZAMANI, N AF LIENEWEG, U ZAMANI, N GP IEEE, ELECTRON DEVICES SOC TI MEASUREMENT AND MODELING OF SIZE AND PROXIMITY EFFECTS IN CONDUCTOR LINEWIDTHS SO ICMTS 94 - PROCEEDINGS OF THE 1994 INTERNATIONAL CONFERENCE ON MICROELECTRONIC TEST STRUCTURES LA English DT Proceedings Paper CT 1994 International Conference on Microelectronic Test Structures CY MAR 22-25, 1994 CL SAN DIEGO, CA SP IEEE, ELECTRON DEVICES SOC C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. 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 0-7803-1757-2 PY 1994 BP 57 EP 61 PG 5 WC Engineering, Manufacturing; Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA BA74F UT WOS:A1994BA74F00011 ER PT B AU BUEHLER, MG BLAES, BR TARDIO, G SOLI, GA AF BUEHLER, MG BLAES, BR TARDIO, G SOLI, GA GP IEEE, ELECTRON DEVICES SOC TI INVERTER MATRIX FOR THE CLEMENTINE MISSION SO ICMTS 94 - PROCEEDINGS OF THE 1994 INTERNATIONAL CONFERENCE ON MICROELECTRONIC TEST STRUCTURES LA English DT Proceedings Paper CT 1994 International Conference on Microelectronic Test Structures CY MAR 22-25, 1994 CL SAN DIEGO, CA SP IEEE, ELECTRON DEVICES SOC C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-1757-2 PY 1994 BP 198 EP 203 PG 6 WC Engineering, Manufacturing; Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA BA74F UT WOS:A1994BA74F00038 ER PT B AU PONCHAK, GE KAYALI, S HUANG, HC AF PONCHAK, GE KAYALI, S HUANG, HC BE Liu, L TI THE DEVELOPMENT OF A GAAS MMIC RELIABILITY AND SPACE QUALIFICATION GUIDE SO IEEE 1994 MICROWAVE AND MILLIMETER-WAVE MONOLITHIC CIRCUITS SYMPOSIUM - DIGEST OF PAPERS LA English DT Proceedings Paper CT 1994 IEEE Microwave and Millimeter-Wave Monolithic Circuits Symposium (MMWMC)/MTT-S International Microwave Symposium CY MAY 23-25, 1994 CL SAN DIEGO, CA SP IEEE, MICROWAVE THEORY & TECH SOC, IEEE, ELECTRON DEVICES SOC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-7803-1418-2 PY 1994 BP 69 EP 72 PG 4 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BA73A UT WOS:A1994BA73A00016 ER PT B AU PHAM, C HARTON, PL SIMHAL, SK AF PHAM, C HARTON, PL SIMHAL, SK GP IEEE, AEROSP & ELECTR SYST SOC TI SPACE-SHUTTLE RADAR PERFORMANCE PREDICTIONS AND VERIFICATION SO IEEE 1994 POSITION LOCATION AND NAVIGATION SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1994 Position Location and Navigation Symposium CY APR 11-15, 1994 CL LAS VEGAS, NV SP IEEE, AEROSP & ELECTR SYST SOC C1 LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. 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 0-7803-1435-2 PY 1994 BP 199 EP 208 PG 10 WC Automation & Control Systems; Engineering, Aerospace; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BA74E UT WOS:A1994BA74E00029 ER PT J AU STAVNES, MW HAMMOUD, AN AF STAVNES, MW HAMMOUD, AN TI ASSESSMENT OF SAFETY IN-SPACE POWER WIRING SYSTEMS SO IEEE AEROSPACE AND ELECTRONIC SYSTEMS MAGAZINE LA English DT Article AB Wiring system failures have resulted from arc propagation in the wiring harnesses of many aircraft and space vehicles. These failures occur when the insulation becomes conductive upon the initiation of an arc. In some cases, the conductive path of the carbon arc track displays a high enough resistance such that the current is limited, and therefore may be difficult to detect using conventional circuit protection. Often, such wiring failures are not simply the result of insulation failure, but are due to a combination of wiring system factors. Inadequate circuit protection, unreliable system designs, and careless maintenance procedures can contribute to a wiring system failure. This paper approaches the problem with respect to the overall wiring system, in order to determine what steps can be taken to improve the reliability, maintainability, and safety of space power systems. Power system technologies, system designs, and maintenance procedures which have contributed to past wiring system failures will be discussed. New technologies, design processes, and management techniques which may lead to improved wiring system safety will be introduced. RP STAVNES, MW (reprint author), SVERDRUP TECHNOL INC,NASA,LEWIS RES CTR GRP,2001 AEROSP PKWY,BROOKPARK,OH 44142, USA. NR 27 TC 3 Z9 4 U1 2 U2 3 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 JAN PY 1994 VL 9 IS 1 BP 21 EP 27 DI 10.1109/62.257135 PG 7 WC Engineering, Aerospace; Engineering, Electrical & Electronic SC Engineering GA MZ786 UT WOS:A1994MZ78600005 ER PT B AU BONDYOPADHYAY, PK ARNDT, GD AF BONDYOPADHYAY, PK ARNDT, GD GP IEEE TI DESIGN OF LOW SIDE LOBE SUBARRAY SCANNALE MICROSTRIP ANTENNA-ARRAYS AT KA-BAND SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 NASA,LYNDON B JOHNSON SPACE CTR,ELECTROMAGNET SYST BRANCH,HOUSTON,TX 77058. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 178 EP 181 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00047 ER PT B AU BONDYOPADHYAY, PK AF BONDYOPADHYAY, PK GP IEEE TI INVESTIGATIONS ON THE CORREC WAVELENGTH OF TRANSMISSION OF MARCONI DECEMBER-1901 TRANSATLANTIC WIRELESS SIGNAL SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 NASA,LYNDON B JOHNSON SPACE CTR,ELECTROMAGNET SYST BRANCH,HOUSTON,TX 77058. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 217 EP 220 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00056 ER PT B AU BONDYOPADHYAY, PK AF BONDYOPADHYAY, PK GP IEEE TI INVENTION OF A NEW CIRCULAR POLARIZER SCREEN SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 NASA,LYNDON B JOHNSON SPACE CTR,ELECTROMAGNET SYST BRANCH,HOUSTON,TX 77058. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 233 EP 236 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00060 ER PT B AU OTOSHI, TY FRANCO, MM AF OTOSHI, TY FRANCO, MM GP IEEE TI NOISE TEMPERATURE CONTRIBUTION OF A DICHROIC PLATE IN A BEAM-WAVE-GUIDE ANTENNA SYSTEM SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 262 EP 265 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00067 ER PT B AU JENSEN, MA FIJANY, A RAHMATSAMII, Y AF JENSEN, MA FIJANY, A RAHMATSAMII, Y GP IEEE TI TIME-PARALLEL COMPUTATIONAL STRATEGY FOR FDTD SOLUTION OF MAXWELL EQUATIONS SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 CALTECH,DEPT ELECT ENGN,JPL,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 380 EP 383 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00096 ER PT B AU LEE, RQ ZIMMERMAN, M LEE, KF AF LEE, RQ ZIMMERMAN, M LEE, KF GP IEEE TI ENHANCEMENT OF ARRAY GAIN WITH STACKED PARASITIC ELEMENTS SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 468 EP 471 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00117 ER PT B AU TULINSTEFF, AN LEE, K SUKAMTO, L CHEW, W AF TULINSTEFF, AN LEE, K SUKAMTO, L CHEW, W GP IEEE TI A 20-GHZ ACTIVE RECEIVE SLOT ARRAY SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 832 EP 835 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00202 ER PT B AU KORMANYOS, BK REBEIZ, GM AF KORMANYOS, BK REBEIZ, GM GP IEEE TI 20-GHZ POWER COMBINING SLOT-OSCILLATOR ARRAY SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 UNIV MICHIGAN,NASA,CTR SPACE TERAHERTZ TECHNOL,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 840 EP 843 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00204 ER PT B AU CHEN, JC STANTON, PH AF CHEN, JC STANTON, PH GP IEEE TI X/KA-BAND DUAL-FREQUENCY HORN DESIGN SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 990 EP 993 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00239 ER PT B AU VERUTTIPONG, W BATHKER, DA AF VERUTTIPONG, W BATHKER, DA GP IEEE TI A NEW TECHNIQUE FOR VERNIER POINTING OF A BEAM-WAVE-GUIDE ANTENNA SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 998 EP 1001 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00241 ER PT B AU WU, TK HUANG, J AF WU, TK HUANG, J GP IEEE TI LOW-COST ANTENNAS FOR DIRECT BROADCAST SATELLITE RADIO SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 1008 EP 1011 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00243 ER PT B AU SIMONS, RN KELLY, ES LEE, RQ TAUB, SR AF SIMONS, RN KELLY, ES LEE, RQ TAUB, SR GP IEEE TI RADIAL MICROSTRIP SLOTLINE FEED NETWORK FOR CIRCULAR MOBILE COMMUNICATIONS ARRAY SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 1024 EP 1027 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00247 ER PT B AU DENSMORE, A AF DENSMORE, A GP IEEE TI K/KA-BAND ANTENNA FOR BRAODBAND AERONAUTICAL MOBILE APPLICATION SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 1032 EP 1035 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00249 ER PT B AU EPP, LW HOPPE, DJ CHINN, GC LEE, JF AF EPP, LW HOPPE, DJ CHINN, GC LEE, JF GP IEEE TI SCATTERING FROM THE QUASI-OPTICAL FERRITE CIRCULATOR USING A COUPLED INTEGRAL-EQUATION FEM SOLUTION SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 1408 EP 1411 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00338 ER PT B AU CHA, A CRAMER, P AF CHA, A CRAMER, P GP IEEE TI AN INITIAL STUDY OF USING THE 34-M ANTENNA FOR LUNAR MISSIONS SUPPORT SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 2038 EP 2041 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00487 ER PT B AU WU, TK CHANDLER, C KIPP, R AF WU, TK CHANDLER, C KIPP, R GP IEEE TI FIELD-OF-VIEW ANALYSIS OF SEAWINDS REFLECTOR ANTENNA SO IEEE ANTENNAS AND PROPAGATION SOCIETY INTERNATIONAL SYMPOSIUM 1994, VOLS I-III SE IEEE AP-S INTERNATIONAL SYMPOSIUM DIGEST LA English DT Proceedings Paper CT IEEE Antennas-and-Propagation-Society International Symposium 1994 CY JUN 19-24, 1994 CL UNIV WASHINGTON, SEATTLE, WA SP IEEE, ANTENNAS & PROPAGAT SOC HO UNIV WASHINGTON C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-2009-3 J9 IEEE AP-S PY 1994 BP 2042 EP 2045 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BB62W UT WOS:A1994BB62W00488 ER PT J AU ELLIS, SR AF ELLIS, SR TI WHAT ARE VIRTUAL ENVIRONMENTS SO IEEE COMPUTER GRAPHICS AND APPLICATIONS LA English DT Article RP NASA, AMES RES CTR, ADV DISPLAYS & SPATIAL PERCEPT LAB, MS 262-2, MOFFETT FIELD, CA 94035 USA. NR 16 TC 62 Z9 62 U1 0 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1314 USA SN 0272-1716 EI 1558-1756 J9 IEEE COMPUT GRAPH JI IEEE Comput. Graph. Appl. PD JAN PY 1994 VL 14 IS 1 BP 17 EP 22 DI 10.1109/38.250914 PG 6 WC Computer Science, Software Engineering SC Computer Science GA MP625 UT WOS:A1994MP62500005 ER PT J AU JONSSON, B LARSSON, AG SJOLUND, O WANG, S ANDERSSON, TG MASERJIAN, J AF JONSSON, B LARSSON, AG SJOLUND, O WANG, S ANDERSSON, TG MASERJIAN, J TI CARRIER RECOMBINATION IN A PERIODICALLY DELTA-DOPED MULTIPLE-QUANTUM-WELL STRUCTURE SO IEEE JOURNAL OF QUANTUM ELECTRONICS LA English DT Article ID STRAINED-LAYER SUPERLATTICES; OPTICAL NONLINEARITIES; DOPING SUPERLATTICES; ROOM-TEMPERATURE; GAAS; ABSORPTION; SEMICONDUCTORS; TRANSITIONS; ALGAAS/GAAS; MODULATION AB We have theoretically and experimentally investigated the optical-excitation-dependent carrier recombination lifetime in a periodically delta-doped InGaAs/GaAs multiple-quantum-well structure. The spatial separation of photogenerated electrons and holes results in an increased sensitivity to the optical excitation intensity in proportion to the increase in carrier lifetime. Experimentally, we find more than six orders of magnitude reduction in the carrier recombination rate over that for spatially direct transitions under low-excitation conditions. On the other hand, theory predicts intrinsic recombination rates for ideal structures far below those found experimentally. Various mechanisms such as electric-field-enhanced redistribution of the dopants during epitaxial growth, statistical variations in the separation of the dopants, and extrinsic recombination channels caused by misfit dislocations are discussed as possible origins for this discrepancy. C1 CHALMERS UNIV TECHNOL,DEPT PHYS,S-41296 GOTHENBURG,SWEDEN. JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. RP JONSSON, B (reprint author), CHALMERS UNIV TECHNOL,DEPT OPTOELECTR & ELECT MEASUREMENTS,S-41296 GOTHENBURG,SWEDEN. RI Larsson, Anders/P-7275-2015 OI Larsson, Anders/0000-0002-0912-7695 NR 43 TC 17 Z9 17 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 0018-9197 J9 IEEE J QUANTUM ELECT JI IEEE J. Quantum Electron. PD JAN PY 1994 VL 30 IS 1 BP 63 EP 74 DI 10.1109/3.272063 PG 12 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA ND507 UT WOS:A1994ND50700011 ER PT J AU LEE, KF CHEBOLU, SR CHEN, W LEE, RQ AF LEE, KF CHEBOLU, SR CHEN, W LEE, RQ TI ON THE ROLE OF SUBSTRATE LOSS TANGENT IN THE CAVITY MODEL-THEORY OF MICROSTRIP PATCH ANTENNAS SO IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION LA English DT Note AB The effective loss tangent (delta(efff)) plays an important role in the improved cavity model of microstrip patch antennas. It is calculated using an iterative procedure. Results are presented here showing that the final value of delta(eff) is quite sensitive to the value chosen at the start of the iterative process, i.e., the substrate loss tangent (tan delta). Since the input impedance depends on delta(eff), it is important to specify the value of tan delta in any comparison with experiment. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP LEE, KF (reprint author), UNIV TOLEDO,DEPT ELECT ENGN,TOLEDO,OH 43606, USA. NR 1 TC 4 Z9 4 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 0018-926X J9 IEEE T ANTENN PROPAG JI IEEE Trans. Antennas Propag. PD JAN PY 1994 VL 42 IS 1 BP 110 EP 112 DI 10.1109/8.272308 PG 3 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA ND840 UT WOS:A1994ND84000015 ER PT J AU DIVSALAR, D SIMON, MK AF DIVSALAR, D SIMON, MK TI MAXIMUM-LIKELIHOOD DIFFERENTIAL DETECTION OF UNCODED AND TRELLIS-CODED AMPLITUDE-PHASE MODULATION OVER AWGN AND FADING CHANNELS - METRICS AND PERFORMANCE SO IEEE TRANSACTIONS ON COMMUNICATIONS LA English DT Article ID MULTIPLE AB This paper derives metrics for maximum-likelihood differential detection of uncoded and trellis coded MPSK and QAM transmitted over Rayleigh and Rician fading channels. Receiver structures based on these metrics are proposed and their error probability performance analyzed and/or simulated. The results represent a generalization of the notion of multiple symbol differential detection, previously introduced by the authors for MPSK over an AWGN, to the fading channel and other modulations. For the coded cases, ideal interleaving/deinterleaving is assumed and furihermbre the presence or absence of channel state information. An interesting side result is that for a constant envelope modulation transmitted over a fading channel with unknown but rapidly-varying phase error (the other extreme to the slowly-varying phase error case normally assumed for differential detection), under certain practical assumptions, it is shown that the optimum receiver is of the limiter-discriminator type. RP DIVSALAR, D (reprint author), CALTECH,JET PROP LAB,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 16 TC 122 Z9 122 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 0090-6778 J9 IEEE T COMMUN JI IEEE Trans. Commun. PD JAN PY 1994 VL 42 IS 1 BP 76 EP 89 DI 10.1109/26.275303 PG 14 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA NF599 UT WOS:A1994NF59900012 ER PT J AU POLATIN, PF SARABANDI, K ULABY, FT AF POLATIN, PF SARABANDI, K ULABY, FT TI AN ITERATIVE INVERSION ALGORITHM WITH APPLICATION TO THE POLARIMETRIC RADAR RESPONSE OF VEGETATION CANOPIES SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article ID WALNUT ORCHARD; BACKSCATTER; MODEL; SCATTERING; SOIL AB The retrieval of scene parameters from polarimetric radar data using an iterative inversion approach is considered in this paper. The theoretical development of a general, model-based iterative algorithm for inversion of polarimetric radar data is presented. Factors relevant to its implementation, such as sensor configuration, algorithm optimization and computational structure are discussed. The algorithm is applied to the specific problem of inverting the vector radiative transfer model for a simplified, representative vegetation canopy consisting of vertical trunks, leaves, and a rough ground surface. The results of this inversion are in excellent agreement with simulated data generated using the radiative transfer model. The convergence properties of the algorithm are evaluated, and it is found that successful convergence is achieved in about 90% to 95% of the cases tested for the implementation used in this work. An error analysis is presented which considers the effect of both systematic and measurement derived errors. Typical error bounds for the current application are approximately +/-3%, allowing for +/-0.5 dB accuracy in the measured radar data. C1 NASA,CTR SPACE TERAHERTZ TECHNOL,WASHINGTON,DC 20546. RP POLATIN, PF (reprint author), UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,RADIAT LAB,ANN ARBOR,MI 48109, USA. NR 38 TC 10 Z9 11 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 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 1994 VL 32 IS 1 BP 62 EP 71 DI 10.1109/36.285189 PG 10 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA NN925 UT WOS:A1994NN92500007 ER PT J AU SAATCHI, SS LEVINE, DM LANG, RH AF SAATCHI, SS LEVINE, DM LANG, RH TI MICROWAVE BACKSCATTERING AND EMISSION MODEL FOR GRASS CANOPIES SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article ID SURFACE SOIL-MOISTURE; ELECTROMAGNETIC BACKSCATTERING; PRAIRIE; LAYER AB Microwave radar and radiometer measurements of grasslands indicate a substantial reduction in sensor sensitivity to soil moisture in the presence of a thatch layer. When this layer is wet it masks changes in the underlying soil, making the canopy appear warm in the case of passive sensors (radiometer) and decreasing backscatter in the active case (scatterometer). A model for a grass canopy with thatch will be presented in this paper to explain this behavior and to compare with observations. The canopy model consists of three layers: grass, thatch, and the underlying soil. The grass blades are modeled by elongated elliptical discs and the thatch is modeled as a collection of disk shaped water droplets (i.e., the dry matter is neglected). The ground is homogeneous and flat. The distorted Born approximation is used to compute the radar cross section of this three layer canopy and the emissivity is computed from the radar cross section using the Peake formulation for the passive problem. Results are computed at L-band (1.4 GHz) and C-band (4.75 GHz) using canopy parameters (i.e., plant geometry, soil moisture, plant moisture, etc.) representative of Konza Prairie grasslands. The results are compared to C-band scatterometer measurements and L-band radiometer measurements at these grasslands. C1 NASA,GODDARD SPACE FLIGHT CTR,MICROWAVE SENSORS BRANCH,HYPROSPHER PROC LAB,GREENBELT,MD 20771. GEORGE WASHINGTON UNIV,DEPT ELECT & COMP ENGN,WASHINGTON,DC 20052. RP SAATCHI, SS (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 27 TC 40 Z9 40 U1 1 U2 7 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 1994 VL 32 IS 1 BP 177 EP 186 DI 10.1109/36.285200 PG 10 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA NN925 UT WOS:A1994NN92500018 ER PT J AU JACKSON, TJ ENGMAN, ET LEVINE, D SCHMUGGE, TJ LANG, R WOOD, E TENG, W AF JACKSON, TJ ENGMAN, ET LEVINE, D SCHMUGGE, TJ LANG, R WOOD, E TENG, W TI MULTITEMPORAL PASSIVE MICROWAVE MAPPING IN MACHYDRO-90 SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Letter ID SOIL-MOISTURE AB MACHYDRO'90 was an experiment conducted in Pennsylvania in 1990 to study the synergistic use of remote sensors in multitemporal hydrologic studies. As part of this mission the pushbroom microwave radiometer was flown and used to produce brightness temperature maps. Verification studies and vegetation algorithms for mixed land cover areas are described. C1 PRINCETON UNIV,PRINCETON,NJ 08544. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. GEORGE WASHINGTON UNIV,WASHINGTON,DC 20052. RP JACKSON, TJ (reprint author), USDA ARS,BELTSVILLE AGR RES CTR,HYDROL LAB,BELTSVILLE,MD 20705, USA. NR 8 TC 6 Z9 7 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 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 1994 VL 32 IS 1 BP 201 EP 206 DI 10.1109/36.285203 PG 6 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA NN925 UT WOS:A1994NN92500021 ER PT J AU TANNER, A DURDEN, SL DENNING, R IM, E LI, FK RICKETTS, W WILSON, W AF TANNER, A DURDEN, SL DENNING, R IM, E LI, FK RICKETTS, W WILSON, W TI PULSE-COMPRESSION WITH VERY-LOW SIDELOBES IN AN AIRBORNE RAIN MAPPING RADAR SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Letter ID TRMM AB Pulse compression allows a substantial reduction in the peak transmitted power of a radar and is attractive for spaceborne remote sensing applications. In the case of a downward looking rain measuring radar, however, the range sidelobes associated with surface return can mask return from rain and must be kept to a minimum. Here, we describe the pulse compression system for the NASA/JPL Airborne Rain Mapping Radar. This system uses time-domain weighting of the transmitted pulse and is able to achieve a range sidelobe level of -55 dB or better in flight tests. This is significantly lower than other values reported in the open literature. RP TANNER, A (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 7 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 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 1994 VL 32 IS 1 BP 211 EP 213 DI 10.1109/36.285205 PG 3 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA NN925 UT WOS:A1994NN92500023 ER PT J AU SANTIAGO, DG DICK, GJ PRATA, A AF SANTIAGO, DG DICK, GJ PRATA, A TI MODE CONTROL OF CRYOGENIC WHISPERING-GALLERY MODE SAPPHIRE DIELECTRIC-RING RESONATORS SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Article AB This paper presents a technique for solving the mode purity problem that exists in cryogenic microwave frequency discriminators using X-band sapphire whispering-gallery mode resonators. The sapphire cavity resonates in a pair of quasi-degenerate modes split by a few kHz due to small geometrical imperfections. Since the nature and location of the geometrical imperfections are difficult to determine, variable coupling of the modes to a fixed output port results. Resonator applications require reproducible coupling to only one of these modes. This objective can be achieved by adding a larger dominant perturbation to the resonator. Results of tests show that a noncircularly-symmetric sapphire piece suspended above the resonator can provide controllable mode coupling and simultaneous frequency tuning. C1 UNIV SO CALIF,DEPT ELECT ENGN,LOS ANGELES,CA 90089. RP SANTIAGO, DG (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 4 TC 11 Z9 11 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 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD JAN PY 1994 VL 42 IS 1 BP 52 EP 55 DI 10.1109/22.265527 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA MY241 UT WOS:A1994MY24100007 ER PT J AU KIRKHAM, H JOHNSTON, AR ALLEN, GD AF KIRKHAM, H JOHNSTON, AR ALLEN, GD TI DESIGN CONSIDERATIONS FOR A FIBER OPTIC COMMUNICATIONS NETWORK FOR POWER-SYSTEMS SO IEEE TRANSACTIONS ON POWER DELIVERY LA English DT Article; Proceedings Paper CT IEEE/PES 1993 Winter Meeting CY JAN 31-FEB 05, 1993 CL COLUMBUS, OH SP IEEE, POWER ENGN SOC DE FIBER OPTICS; COMMUNICATIONS; SUBSTATION AUTOMATION; DISTRIBUTION AUTOMATION; TRAFFIC STUDY AB The design of a fiber optic communication network for monitoring and control in power systems is discussed. It is shown that by appropriate choice of protocols, a fault-tolerant system can be built that operates in any arbitrary configuration. Since the network is based on fiber optics, it can be made fast enough for substation monitoring and control. In this application, a relatively small number of cables is required to implement a high reliability system. The network can also be used for distribution automation. In this application the network is required to reach all parts of the power system, and the fiber cable itself becomes a significant fraction of the cost of communications. However, since many applications can be supported at once, the cost per function can be reasonable. C1 AMER ELECT POWER SERV CORP,COLUMBUS,OH. RP KIRKHAM, H (reprint author), CALTECH,JET PROP LAB,4800 OAK GROVE DR,PASADENA,CA, USA. OI Kirkham, Harold/0000-0003-2893-7586 NR 5 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 0885-8977 J9 IEEE T POWER DELIVER JI IEEE Trans. Power Deliv. PD JAN PY 1994 VL 9 IS 1 BP 510 EP 516 DI 10.1109/61.277723 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA NF723 UT WOS:A1994NF72300098 ER PT S AU MCDONALD, KC ZIMMERMANN, R WAY, JB RIGNOT, E AF MCDONALD, KC ZIMMERMANN, R WAY, JB RIGNOT, E BE Stein, TI TI CHARACTERIZATION OF CANOPY PHYSIOLOGY AT BOREAS WITH SAR SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. RI Rignot, Eric/A-4560-2014 OI Rignot, Eric/0000-0002-3366-0481 NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 103 EP 103 PG 1 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00031 ER PT S AU COMISO, JC ACKLEY, SF AF COMISO, JC ACKLEY, SF BE Stein, TI TI ANTARCTIC SEA-ICE PASSIVE MICROWAVE SIGNATURES DURING SUMMER AND AUTUMN SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, HYDROSPHER PROC LAB, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 143 EP 146 PG 4 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00044 ER PT S AU DRINKWATER, MR KOTTMEIER, C AF DRINKWATER, MR KOTTMEIER, C BE Stein, TI TI SATELLITE MICROWAVE RADAR-TRACKED AND BUOY-TRACKED ICE MOTION IN THE WEDDELL SEA DURING WWGS92 SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. OI Drinkwater, Mark/0000-0002-9250-3806 NR 0 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 153 EP 155 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00047 ER PT S AU DRINKWATER, MR EARLY, DS LONG, DG AF DRINKWATER, MR EARLY, DS LONG, DG BE Stein, TI TI ERS-1 INVESTIGATIONS OF SOUTHERN-OCEAN SEA-ICE GEOPHYSICS USING COMBINED SCATTEROMETER AND SAR IMAGES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. OI Long, David/0000-0002-1852-3972; Drinkwater, Mark/0000-0002-9250-3806 NR 0 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 165 EP 167 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00051 ER PT S AU CHCHBOUNI, A LHOMME, JP NJOKU, EG NICHOLS, D STANNARD, D MORAN, SM KERR, YH MONTENY, B AF CHCHBOUNI, A LHOMME, JP NJOKU, EG NICHOLS, D STANNARD, D MORAN, SM KERR, YH MONTENY, B BE Stein, TI TI ESTIMATION OF SENSIBLE HEAT-FLUX USING 2-COMPONENTS AND 3-COMPONENTS MODEL DURING MONSOON90 EXPERIMENT SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JPL, PASADENA, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 181 EP 183 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00056 ER PT S AU NJOKU, EG CHCHBOUNI, A CABOT, F RAGUE, B FLEMING, K KERR, YH AF NJOKU, EG CHCHBOUNI, A CABOT, F RAGUE, B FLEMING, K KERR, YH BE Stein, TI TI AN APPROACH TO ESTIMATING SURFACE PARAMETERS AND FLUXES USING MODELING AND MULTISPECTRAL REMOTE-SENSING SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 187 EP 189 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00058 ER PT S AU ELSALEOUS, N VERMOTE, E ROGER, JC AF ELSALEOUS, N VERMOTE, E ROGER, JC BE Stein, TI TI OPERATIONAL ATMOSPHERIC CORRECTION OF AVHRR VISIBLE AND NEAR-INFRARED DATA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. RI Vermote, Eric/K-3733-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 220 EP 222 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00067 ER PT S AU RIGNOT, E WILLIAMS, C MCDONALD, K WAY, JB ZIMMERMANN, R VIERECK, L AF RIGNOT, E WILLIAMS, C MCDONALD, K WAY, JB ZIMMERMANN, R VIERECK, L BE Stein, TI TI MONITORING OF FREEZE-THAW TRANSITIONS IN TAIGA FORESTS USING ERS-1 SAR SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. RI Rignot, Eric/A-4560-2014 OI Rignot, Eric/0000-0002-3366-0481 NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 225 EP 225 PG 1 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00068 ER PT S AU ZIMMERMANN, R MCDONALD, K WAY, J OREN, R AF ZIMMERMANN, R MCDONALD, K WAY, J OREN, R BE Stein, TI TI MICROCLIMATE, WATER POTENTIAL, TRANSPIRATION, AND BOLE DIELECTRIC-CONSTANT OF CONIFEROUS AND DECIDUOUS TREE SPECIES IN THE CONTINENTAL BOREAL ECOTONE OF CENTRAL ALASKA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 226 EP 228 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00069 ER PT S AU MOGHADDAM, M SAATCHI, S AF MOGHADDAM, M SAATCHI, S BE Stein, TI TI FOREST MODELING OF JACK PINE TREES FOR BOREAS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 232 EP 234 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00071 ER PT S AU YUEH, SH NGHIEM, SV KWOK, R AF YUEH, SH NGHIEM, SV KWOK, R BE Stein, TI TI COMPARISON OF A POLARIMETRIC SCATTERING AND EMISSION MODEL WITH OCEAN BACKSCATTER AND BRIGHTNESS MEASUREMENTS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 258 EP 260 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00079 ER PT S AU ENGMAN, ET AF ENGMAN, ET BE Stein, TI TI THE POTENTIAL OF SAR IN HYDROLOGY SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, HYDROL SCI BRANCH 974, HYDROSPHER PROC LAB, GREENBELT, MD 20771 USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 283 EP 285 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00086 ER PT S AU KLEIN, JD HENSLEY, S MADSEN, SN WEBB, FR AF KLEIN, JD HENSLEY, S MADSEN, SN WEBB, FR BE Stein, TI TI RESULTS OF 1993 REPEAT-PASS SAR INTERFEROMETRY EXPERIMENTS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH DE SAR; INTERFEROMETRY; REPEAT-PASS C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 295 EP 297 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00090 ER PT S AU YEH, PS MILLER, WH AF YEH, PS MILLER, WH BE Stein, TI TI THE DEVELOPMENT OF LOSSLESS DATA-COMPRESSION TECHNOLOGY FOR REMOTE-SENSING APPLICATIONS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 307 EP 309 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00093 ER PT S AU TILTON, JC SEILER, E AF TILTON, JC SEILER, E BE Stein, TI TI CRUSH - A COMPARATIVE LOSSLESS COMPRESSION PACKAGE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 310 EP 312 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00094 ER PT S AU HAYNE, GS HANCOCK, DW PURDY, CL AF HAYNE, GS HANCOCK, DW PURDY, CL BE Stein, TI TI ENGINEERING PERFORMANCE ANALYSIS OF THE TOPEX RADAR ALTIMETER SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 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 SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 337 EP 339 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00102 ER PT S AU ATLAS, D AF ATLAS, D BE Stein, TI TI RADAR METEOROLOGY - HIGHLIGHTS OF RECENT ADVANCES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, ATMOSPHERES LAB, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 355 EP 360 PG 6 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00106 ER PT S AU WEINMAN, JA SCHOLS, JL AF WEINMAN, JA SCHOLS, JL BE Stein, TI TI MARITIME PRECIPITATION DISTRIBUTIONS DETERMINED FROM AIRBORNE RADAR AND MULTIFREQUENCY RADIOMETRIC MEASUREMENTS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, MICROWAVE SENSORS BRANCH, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 430 EP 432 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00125 ER PT S AU FREEMAN, A CRANDALL, K AF FREEMAN, A CRANDALL, K BE Stein, TI TI THE SIR-C EDUCATION-PROGRAM (SIR-CED) SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 511 EP 513 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00150 ER PT S AU MCKAY, MF AF MCKAY, MF BE Stein, TI TI SPACE-SHUTTLE PHOTOGRAPHY ON LASER DISC - A WINNING COMBINATION FOR THE CLASSROOM SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, LYNDON B JOHNSON SPACE CTR, HOUSTON, TX 77058 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 520 EP 522 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00153 ER PT S AU PITTS, DE HELFERT, MR LULLA, K BREMER, JM EVANS, CA HEYDORN, J DARDANO, C WILLIS, K AF PITTS, DE HELFERT, MR LULLA, K BREMER, JM EVANS, CA HEYDORN, J DARDANO, C WILLIS, K BE Stein, TI TI SPACE-SHUTTLE EARTH OBSERVATIONS DIGITAL DATA-BASE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, LYNDON B JOHNSON SPACE CTR, HOUSTON, TX 77058 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 523 EP 525 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00154 ER PT S AU NGHIEM, SV KWOK, R YUEH, SH KONG, JA TASSOUDJI, MA HSU, CC GOW, AJ PEROVICH, DK AF NGHIEM, SV KWOK, R YUEH, SH KONG, JA TASSOUDJI, MA HSU, CC GOW, AJ PEROVICH, DK BE Stein, TI TI POLARIMETRIC BACKSCATTERING FROM THIN SALINE ICE RELATED TO ICE PHYSICAL AND MORPHOLOGICAL-CHARACTERISTICS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 541 EP 543 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00159 ER PT S AU SAATCHI, S MOGHADDAM, M MCDONALD, K DURDEN, S AF SAATCHI, S MOGHADDAM, M MCDONALD, K DURDEN, S BE Stein, TI TI MICROWAVE-SCATTERING FROM FOREST CANOPIES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 547 EP 547 PG 1 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00161 ER PT S AU LIU, WT GAUTIER, C LANDSFELD, M TANG, WQ AF LIU, WT GAUTIER, C LANDSFELD, M TANG, WQ BE Stein, TI TI SATELLITE OBSERVATION OF SURFACE FORCING OVER THE WARM POOL SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 559 EP 561 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00165 ER PT S AU WALSH, E HAGAN, D ROGERS, D VANDEMARK, D SWIFT, R SCOTT, J AF WALSH, E HAGAN, D ROGERS, D VANDEMARK, D SWIFT, R SCOTT, J BE Stein, TI TI SCANNING RADAR ALTIMETER MEASUREMENTS OF SEA-SURFACE MEAN-SQUARE SLOPE DURING TOGA COARE AND ITS RELATIONSHIP TO SST AND INTERNAL WAVES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GSFC, WALLOPS FLIGHT FACIL, WALLOPS ISL, VA 23337 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 565 EP 567 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00167 ER PT S AU DURDEN, S IM, E LI, F KITIYAKARA, A TANNER, A WILSON, W AF DURDEN, S IM, E LI, F KITIYAKARA, A TANNER, A WILSON, W BE Stein, TI TI ARMAR OBSERVATIONS DURING TOGA COARE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 568 EP 570 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00168 ER PT S AU HAGAN, D ROGERS, D AF HAGAN, D ROGERS, D BE Stein, TI TI MEASUREMENTS OF SEA-SURFACE TEMPERATURE AND BOUNDARY-LAYER HUMIDITY STRUCTURES DURING TOGA COARE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 576 EP 578 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00170 ER PT S AU NGHIEM, SV KWOK, R YUEH, SH KONG, JA TASSOUDJI, MA HSU, CC GOW, AJ PEROVICH, DK AF NGHIEM, SV KWOK, R YUEH, SH KONG, JA TASSOUDJI, MA HSU, CC GOW, AJ PEROVICH, DK BE Stein, TI TI POLARIMETRIC BACKSCATTERING SIGNATURES FROM THIN SALINE ICE UNDER CONTROLLED LABORATORY CONDITIONS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 611 EP 613 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00180 ER PT S AU LI, F IM, E DURDEN, S WILSON, W AF LI, F IM, E DURDEN, S WILSON, W BE Stein, TI TI AIRBORNE AND SPACEBORNE CLOUD RADAR DESIGNS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 672 EP 674 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00199 ER PT S AU CRIPPEN, RE BLOM, RG AF CRIPPEN, RE BLOM, RG BE Stein, TI TI NEW PERSPECTIVES ON ACTIVE TECTONICS - OBSERVING FAULT MOTION, MAPPING EARTHQUAKE STRAIN FIELDS, AND VISUALIZING SEISMIC EVENTS IN MULTIPLE DIMENSIONS USING SATELLITE IMAGERY AND GEOPHYSICAL-DATA BASE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 699 EP 700 PG 2 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00206 ER PT S AU HENSLEY, S ROSEN, P ZEBKER, H AF HENSLEY, S ROSEN, P ZEBKER, H BE Stein, TI TI GENERATION OF HIGH-RESOLUTION TOPOGRAPHIC MAPS OF THE GALAPAGOS-ISLANDS USING TOPSAR DATA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, RADAR SCI & ENGN SECT, PASADENA, CA 91109 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 704 EP 706 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00208 ER PT S AU ELFOUHAILY, TM CHAPRON, B KATSAROS, K BLIVEN, L AF ELFOUHAILY, TM CHAPRON, B KATSAROS, K BLIVEN, L BE Stein, TI TI MICROWAVE-SCATTERING DISTRIBUTIONS FROM A RAIN-ROUGHENED WATER-SURFACE - MEASUREMENTS AND MODELING SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 UNIV SPACE RES ASSOC, NASA, GODDARD SPACE FLIGHT CTR, VISITING SCIENTIST PROGRAM, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 795 EP 797 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00238 ER PT S AU BLIVEN, L ELFOUHAILY, T AF BLIVEN, L ELFOUHAILY, T BE Stein, TI TI PRESENTING THE RAIN SEA INTERACTION FACILITY SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH DE RAIN; MICRO-BURSTS; AIR-SEA INTERACTION; BOUNDARY LAYERS; RAIN RADARS; SCATTEROMETERS; ALTIMETERS C1 NASA, GODDARD SPACE FLIGHT CTR, HYDROSPHER PROC LAB, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 798 EP 798 PG 1 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00239 ER PT S AU SAATCHI, SS TREUHALF, R DOBSON, MC AF SAATCHI, SS TREUHALF, R DOBSON, MC BE Stein, TI TI ESTIMATION OF LEF AREA INDEX OVER AGRICULTURAL AREAS FROM POLARIMETRIC SAR IMAGES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 826 EP 826 PG 1 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00249 ER PT S AU CUDDY, D BICKNESLL, T TANKENSON, M AF CUDDY, D BICKNESLL, T TANKENSON, M BE Stein, TI TI ASF DESIGN CONSIDERATIONS FOR RADARSAT ERS-2 SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 906 EP 908 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00271 ER PT S AU BLAIR, JB COYLE, DB BUFTON, JL HARDING, DJ AF BLAIR, JB COYLE, DB BUFTON, JL HARDING, DJ BE Stein, TI TI OPTIMIZATION OF AN AIRBORNE LASER ALTIMETER FOR REMOTE-SENSING OF VEGETATION AND TREE CANOPIES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH RP BLAIR, JB (reprint author), NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 21207 USA. RI Blair, James/D-3881-2013; Harding, David/F-5913-2012 NR 0 TC 10 Z9 10 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 939 EP 941 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00282 ER PT S AU BLIVEN, L BILLAT, V SOBIESKI, P GUISSARD, A BRANGER, H GIOVANANGELI, JP AF BLIVEN, L BILLAT, V SOBIESKI, P GUISSARD, A BRANGER, H GIOVANANGELI, JP BE Stein, TI TI COMMUNIQUE ON VEERING WIND EFFECTS ON SCATTEROMETRY FROM THE SEA-SURFACE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH DE FRONTS; WIND AND SCATTEROMETRY C1 NASA, GODDARD SPACE FLIGHT CTR, HYDROSPHERIC PROC LAB, WALLOPS ISL, VA 23337 USA. RI Branger, Hubert/E-1879-2016 OI Branger, Hubert/0000-0002-9888-681X NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 954 EP 956 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00286 ER PT S AU KWOK, R CUNNINGHAM, GF AF KWOK, R CUNNINGHAM, GF BE Stein, TI TI USE OF TIME-SERIES SAR DATA TO RESOLVE ICE TYPE AMBIGUITIES IN NEWLY-OPENED LEADS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1024 EP 1026 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00307 ER PT S AU CHAPMAN, B FREEMAN, A ALVES, M AF CHAPMAN, B FREEMAN, A ALVES, M BE Stein, TI TI VALIDATION AND CALIBRATION OF SAR IMAGERY OF MANU-NATIONAL-PARK, PERU SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1066 EP 1068 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00320 ER PT S AU FREEMAN, A CRUZ, J CHAPMAN, B ALVES, M SUN, J AZEEM, M SHAFFER, S AF FREEMAN, A CRUZ, J CHAPMAN, B ALVES, M SUN, J AZEEM, M SHAFFER, S BE Stein, TI TI 1ST RESULTS FROM SIR-C CALIBRATION SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1079 EP 1081 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00324 ER PT S AU JARNOT, RF WATERS, JW PECKHAM, GE AF JARNOT, RF WATERS, JW PECKHAM, GE BE Stein, TI TI CALIBRATION OF THE MICROWAVE LIMB SOUNDER ON THE UPPER-ATMOSPHERE RESEARCH SATELLITE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1108 EP 1112 PG 5 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00333 ER PT S AU FLOWER, DA FROIDEVAUX, L JARNOT, RF READ, WG WATERS, JW AF FLOWER, DA FROIDEVAUX, L JARNOT, RF READ, WG WATERS, JW BE Stein, TI TI UARS MICROWAVE LIMB SOUNDER OBSERVATIONS OF UPPER-ATMOSPHERE OZONE AND CHLORINE MONOXIDE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1115 EP 1117 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00334 ER PT S AU LEUNG, K CUDDY, D CHEN, M AF LEUNG, K CUDDY, D CHEN, M BE Stein, TI TI ASF SAR PROCESSING SYSTEM OVERVIEW SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1190 EP 1193 PG 4 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00356 ER PT S AU HARDING, DJ BLAIR, JB GARVIN, JB LAWRENCE, WT AF HARDING, DJ BLAIR, JB GARVIN, JB LAWRENCE, WT BE Stein, TI TI LASER ALTIMETRY WAVE-FORM MEASUREMENT OF VEGETATION CANOPY STRUCTURE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. RI Blair, James/D-3881-2013; Harding, David/F-5913-2012 NR 0 TC 3 Z9 3 U1 1 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1251 EP 1253 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00373 ER PT S AU LEVINE, DM JACKSON, T KAO, M GRIFFIS, A SWIFT, CT AF LEVINE, DM JACKSON, T KAO, M GRIFFIS, A SWIFT, CT BE Stein, TI TI STATUS OF ESTAR VALIDATION - RESULTS FROM WASHITA-92 SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1320 EP 1322 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00393 ER PT S AU SMITH, JA PEDELTY, JA KNOX, RG AF SMITH, JA PEDELTY, JA KNOX, RG BE Stein, TI TI NEURAL-NETWORK INVERSION OF BIDIRECTIONAL REFLECTANCE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. RI Knox, Robert/E-9657-2011 NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1389 EP 1391 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00412 ER PT S AU HADDAD, ZS DUBOIS, P AF HADDAD, ZS DUBOIS, P BE Stein, TI TI BAYESIAN-ESTIMATION OF SOIL PARAMETERS FROM REMOTE-SENSING DATA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1421 EP 1423 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00422 ER PT S AU ONEILL, PE HSU, AY SEYFRIED, MS AF ONEILL, PE HSU, AY SEYFRIED, MS BE Stein, TI TI SAR TERRAIN CORRECTION FOR IMPROVED SOIL-MOISTURE ESTIMATION IN A MOUNTAIN WATERSHED SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, HYDROL SCI BRANCH 974, GREENBELT, MD 20771 USA. RI O'Neill, Peggy/D-2904-2013 NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1429 EP 1431 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00425 ER PT S AU TOLL, DL SHIREY, DA KIMES, DS AF TOLL, DL SHIREY, DA KIMES, DS BE Stein, TI TI USING REMOTELY-SENSED DATA TO ESTIMATE SURFACE ALBEDO AND ABSORBED PHOTOSYNTHETIC ACTIVE RADIATION SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1461 EP 1463 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00434 ER PT S AU HENSLEY, S SHAFFER, S AF HENSLEY, S SHAFFER, S BE Stein, TI TI AUTOMATIC DEM GENERATION USING MAGELLAN STEREO DATA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, RADAR SCI & ENGN SECT, PASADENA, CA 91109 USA. NR 0 TC 5 Z9 5 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1470 EP 1472 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00437 ER PT S AU WU, C GRAF, J FREILICH, M LONG, D SPENCER, M TSAI, W LISMAN, D WINN, C AF WU, C GRAF, J FREILICH, M LONG, D SPENCER, M TSAI, W LISMAN, D WINN, C BE Stein, TI TI THE SEAWINDS SCATTEROMETER INSTRUMENT SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1511 EP 1515 PG 5 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00448 ER PT S AU LEWICKI, SA SMYTH, MM JOVANOVIC, VM HANSEN, EG AF LEWICKI, SA SMYTH, MM JOVANOVIC, VM HANSEN, EG BE Stein, TI TI A SIMULATION OF EOS MISR DATA AND GEOMETRIC PROCESSING FOR THE PROTOTYPING OF THE MISR DATA AND GEOMETRIC PROCESSING FOR THE PROTOTYPING OF THE MISR GROUND DATA SYSTEM SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, EARTH OBSERV ANAL SYST SECT, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1543 EP 1545 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00457 ER PT S AU IM, E JOHNSON, WTK WHEELER, K AF IM, E JOHNSON, WTK WHEELER, K BE Stein, TI TI DEVELOPMENT STATUS OF CASSINI RADAR FOR REMOTE-SENSING OF TITAN SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1562 EP 1564 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00463 ER PT S AU DUBOIS, PC VANZYL, J AF DUBOIS, PC VANZYL, J BE Stein, TI TI AN EMPIRICAL SOIL-MOISTURE ESTIMATION ALGORITHM USING IMAGING RADAR SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. RI Dubois-Fernandez, Pascale/A-6743-2012 NR 0 TC 1 Z9 1 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1573 EP 1575 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00466 ER PT S AU ONEILL, PE CHAUHAN, NS JACKSON, TJ LEVINE, DM LANG, RH AF ONEILL, PE CHAUHAN, NS JACKSON, TJ LEVINE, DM LANG, RH BE Stein, TI TI MICROWAVE SOIL-MOISTURE PREDICTION THROUGH CORN IN WASHITA-92 SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, HYDROL SCI BRANCH 974, GREENBELT, MD 20771 USA. RI O'Neill, Peggy/D-2904-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1585 EP 1587 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00470 ER PT S AU FREEMAN, A KRAMER, C CHAPMAN, B AF FREEMAN, A KRAMER, C CHAPMAN, B BE Stein, TI TI CLASSIFICATION OF THE AMAZON RAIN-FOREST USING JERS-1 SAR DATA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1595 EP 1597 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00473 ER PT S AU DABNEY, PW IRONS, JR TRAVIS, JW KASTEN, MS BHARDWAJ, S AF DABNEY, PW IRONS, JR TRAVIS, JW KASTEN, MS BHARDWAJ, S BE Stein, TI TI IMPACT OF RECENT ENHANCEMENTS AND UPGRADES OF THE ADVANCED SOLID-STATE ARRAY SPECTRORADIOMETER (ASAS) SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, SENSOR DEV & CHARACTERIZAT BRANCH, GREENBELT, MD 20771 USA. RI Irons, James/D-8535-2012; Dabney, Philip/C-9976-2013 NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1649 EP 1651 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00491 ER PT S AU MARTONCHIK, JV CONEL, JE AF MARTONCHIK, JV CONEL, JE BE Stein, TI TI RETRIEVAL OF SURFACE REFLECTANCE AND ATMOSPHERIC PROPERTIES USING ASAS IMAGERY SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1661 EP 1663 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00495 ER PT S AU DINER, DJ PARADISE, SR MARTONCHIK, JV AF DINER, DJ PARADISE, SR MARTONCHIK, JV BE Stein, TI TI DEVELOPMENT OF AN AEROSOL OPACITY RETRIEVAL ALGORITHM FOR USE WITH MULTI-ANGLE LAND-SURFACE IMAGES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1664 EP 1666 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00496 ER PT S AU CUNNINGHAM, GF KWOK, R BANFIELD, J AF CUNNINGHAM, GF KWOK, R BANFIELD, J BE Stein, TI TI ICE LEAD ORIENTATION CHARACTERISTICS IN THE WINTER BEAUFORT SEA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1747 EP 1749 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00518 ER PT S AU KWOK, R ROTHROCK, DA CUNNINGHAM, GF STERN, H AF KWOK, R ROTHROCK, DA CUNNINGHAM, GF STERN, H BE Stein, TI TI DETERMINATION OF ICE-AGE - A PROPOSED SCHEME FOR A RADARSAT SEA-ICE GEOPHYSICAL PROCESSOR SYSTEM SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1750 EP 1752 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00519 ER PT S AU LIU, AK PENG, CY AF LIU, AK PENG, CY BE Stein, TI TI WAVE EVOLUTION IN THE MARGINAL ICE-ZONE USING ERS-1 SAR SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, OCEANSK & ICE BRANCH, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1767 EP 1769 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00525 ER PT S AU MENEGHINI, R WANG, JR KUMAGAI, H IGUCHI, T AF MENEGHINI, R WANG, JR KUMAGAI, H IGUCHI, T BE Stein, TI TI DESCRIPTION OF A RADAR RADIOMETER METHOD AND ITS APPLICATION TO AIRBORNE MEASUREMENTS OVER STRATIFORM RAIN SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1773 EP 1775 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00526 ER PT S AU ATLAS, D AF ATLAS, D BE Stein, TI TI ORIGIN OF STORM FOOTPRINTS ON THE SEA SEEN BY SAR SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1776 EP 1776 PG 1 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00527 ER PT S AU HADDAD, ZS IM, E DURDEN, SL AF HADDAD, ZS IM, E DURDEN, SL BE Stein, TI TI OPTIMAL ESTIMATION OF RAIN RATE PROFILES FROM SINGLE-FREQUENCY RADAR ECHOES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1780 EP 1782 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00529 ER PT S AU WU, STS AF WU, STS BE Stein, TI TI RETRIEVAL OF RAINRATE OVER ROUGH SEA SURFACES AS MEASURED BY THE ADVANCED MICROWAVE PRECIPITATION RADIOMETER(AMPR) SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH DE RAINFALL MEASUREMENT; MICROWAVE RADIOMETER C1 NASA, GEORGE C MARSHALL SPACE FLIGHT CTR, MARSHALL SPACE FLIGHT CTR, AL 35812 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1783 EP 1785 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00530 ER PT S AU BERKIN, AL JACOBSON, AS AF BERKIN, AL JACOBSON, AS BE Stein, TI TI LINKWINDS, A VISUAL DATA-ANALYSIS SYSTEM AND ITS APPLICATION TO REMOTE SENSED DATA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1799 EP 1801 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00534 ER PT S AU JOHNSON, LF PETERSON, DL AF JOHNSON, LF PETERSON, DL BE Stein, TI TI ESTIMATION OF FOREST CANOPY LEAF-AREA INDEX USING DIRECTIONAL ASAS MEASUREMENTS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, ARC, JOHNSON CONTROLS SERV, MOFFETT FIELD, CA 94035 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1819 EP 1822 PG 4 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00540 ER PT S AU RIGNOT, E WAY, JB WILLIAMS, C VIERECK, L YARIE, J AF RIGNOT, E WAY, JB WILLIAMS, C VIERECK, L YARIE, J BE Stein, TI TI P-BAND RADAR MAPPING OF FOREST BIOMASS IN BOREAL FORESTS OF INTERIOR ALASKA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. RI Rignot, Eric/A-4560-2014 OI Rignot, Eric/0000-0002-3366-0481 NR 0 TC 2 Z9 2 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1853 EP 1855 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00550 ER PT S AU SAATCHI, SS RAGUE, B ZIMMERMAN, R AF SAATCHI, SS RAGUE, B ZIMMERMAN, R BE Stein, TI TI ANALYSIS OF NIMBUS-7 SMMR 6.6 GHZ DATA OVER VEGETATED LAND SURFACES - THEORY AND EXAMPLES SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1863 EP 1863 PG 1 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00553 ER PT S AU CARSEY, F AF CARSEY, F BE Stein, TI TI PROGRESS IN POLAR OCEANS RESEARCH USING ERS-1 DATA SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1957 EP 1958 PG 2 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00580 ER PT S AU JIN, MY AF JIN, MY BE Stein, TI TI PRF AMBIGUITY DETERMINATION FOR RADARSAT SCANSAR SYSTEM SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH DE DOPPLER CENTROID; PRF AMBIGUITY; SCANSAR; SAR BURST; WAVELENGTH DIVERSITY; RANGE OFFSET; MULTIPLE PRF C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1964 EP 1966 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00582 ER PT S AU JORQUERA, CR KORDE, R FORD, VG DUVAL, VG BRUEGGE, CJ AF JORQUERA, CR KORDE, R FORD, VG DUVAL, VG BRUEGGE, CJ BE Stein, TI TI DESIGN OF NEW PHOTODIODE STANDARDS FOR USE IN THE MISR IN-FLIGHT CALIBRATOR SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 1998 EP 2000 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00592 ER PT S AU CHRIEN, NCL HAGEROTT, EC WHITE, ML BRUEGGE, CJ FRENIERE, ER AF CHRIEN, NCL HAGEROTT, EC WHITE, ML BRUEGGE, CJ FRENIERE, ER BE Stein, TI TI CONTRASTING TARGET, STRAY-LIGHT, AND OTHER PERFORMANCE METRICS FOR MISR SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 2001 EP 2003 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00593 ER PT S AU MARKHAM, BL AHMAD, SP IRONS, JR WILLIAMS, DL AF MARKHAM, BL AHMAD, SP IRONS, JR WILLIAMS, DL BE Stein, TI TI RADIOMETRIC CALIBRATION OF THE LANDSAT-7 ENHANCED THEMATIC MAPPER PLUS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GSFC, GREENBELT, MD 20771 USA. RI Irons, James/D-8535-2012; Markham, Brian/M-4842-2013 OI Markham, Brian/0000-0002-9612-8169 NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 2004 EP 2006 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00594 ER PT S AU WANG, JR RACETTE, P CHANG, LA AF WANG, JR RACETTE, P CHANG, LA BE Stein, TI TI RETRIEVAL OF WATER-VAPOR PROFILES USING MEASUREMENTS FROM A MILLIMETER-WAVE IMAGING RADIOMETER SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 NASA, GODDARD SPACE FLIGHT CTR, GREENBELT, MD 20771 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 2054 EP 2056 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00609 ER PT S AU COFIELD, RE AF COFIELD, RE BE Stein, TI TI FIELD-OF-VIEW CALIBRATION OF THE MICROWAVE LIMB SOUNDER ON THE UPPER-ATMOSPHERE RESEARCH SATELLITE SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 2224 EP 2227 PG 4 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00657 ER PT S AU CHRIEN, TG KOPP, G GREEN, RO CHOVIT, C EASTWOOD, M HOLBROOK, J JOHNSON, H HAJEK, P RANEY, J SARTURE, C AF CHRIEN, TG KOPP, G GREEN, RO CHOVIT, C EASTWOOD, M HOLBROOK, J JOHNSON, H HAJEK, P RANEY, J SARTURE, C BE Stein, TI TI IMPROVEMENTS TO THE AIRBORNE VISIBLE INFRARED IMAGING SPECTROMETER (AVIRIS) CALIBRATION SYSTEM SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 0 Z9 0 U1 0 U2 3 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 2293 EP 2294 PG 2 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00675 ER PT S AU YUEH, SH WILSON, WJ NGHIEM, SV LI, FK RICKETTS, WB AF YUEH, SH WILSON, WJ NGHIEM, SV LI, FK RICKETTS, WB BE Stein, TI TI POLARIMETRIC PASSIVE REMOTE-SENSING OF OCEAN WIND VECTORS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 2 Z9 3 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 2416 EP 2418 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00713 ER PT S AU RIGNOT, E VANZYL, J ZIMMERMANN, R AF RIGNOT, E VANZYL, J ZIMMERMANN, R BE Stein, TI TI INFERENCE OF FOREST BIOMASS USING P-BAND CIRCULAR-POLARIZED RADAR SIGNALS SO IGARSS '94 - 1994 INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM VOLUMES 1-4: SURFACE AND ATMOSPHERIC REMOTE SENSING: TECHNOLOGIES, DATA ANALYSIS AND INTERPRETATION SE IEEE International Symposium on Geoscience and Remote Sensing IGARSS LA English DT Proceedings Paper CT International Geoscience and Remote Sensing Symposium on Surface and Atmospheric Remote Sensing - Technologies, Data Analysis and Interpretation (IGARSS 94) CY AUG 08-12, 1992 CL CALIF INST TECH, PASADENA, CA SP IEEE, IEEE, GEOSC & REMOTE SENSING SOC, INT UNION RADIO SCI, OPT SOC AMER, NASA, USN, OFF NAVAL RES HO CALIF INST TECH C1 JET PROP LAB, PASADENA, CA 91109 USA. RI Rignot, Eric/A-4560-2014 OI Rignot, Eric/0000-0002-3366-0481 NR 0 TC 0 Z9 0 U1 0 U2 0 PU IEEE PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 USA SN 2153-6996 BN 0-7803-1497-2 J9 INT GEOSCI REMOTE SE PY 1994 BP 2467 EP 2469 PG 3 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Geology; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BC46W UT WOS:A1994BC46W00729 ER PT B AU FARMER, SC SAYIR, A DICKERSON, PO AF FARMER, SC SAYIR, A DICKERSON, PO BE Singh, M Lewis, D TI MECHANICAL AND MICROSTRUCTURAL CHARACTERIZATION OF DIRECTIONALLY-SOLIDIFIED ALUMINA-ZIRCONIA EUTECTIC FIBERS SO IN SITU COMPOSITES: SCIENCE AND TECHNOLOGY LA English DT Proceedings Paper CT In Situ Composites: Science and Technology Symposium, held at TMS/ASM Materials Week 93 CY OCT 17-21, 1993 CL PITTSBURGH, PA SP TMS, ASM, SMD COMPOSITE MAT COMM, MDS COMPOSITE MAT COMM C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 0 U2 2 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-267-1 PY 1994 BP 167 EP 182 PG 16 WC Materials Science, Composites SC Materials Science GA BZ87J UT WOS:A1994BZ87J00011 ER PT J AU MAURER, HE BLODGET, H VERMILLION, C CHOUDHURY, AM QUADER, MO AF MAURER, HE BLODGET, H VERMILLION, C CHOUDHURY, AM QUADER, MO TI REMOTE-SENSING TECHNOLOGY FOR BANGLADESH SO INFORMATION AND DECISION TECHNOLOGIES LA English DT Article AB This paper describes NASA activities that contributed to the development of a remote sensing capability in Bangladesh since 1968. Initial efforts focused on the installation of an automatic picture transmission (APT) ground station at Dhaka which was situated at the Bangladesh Atomic Energy Center. In 1982 the Bangladesh Space Research and Remote Sensing Organization (SPARRSO) was formed to centralize all remote sensing activities. A relationship between NASA and SPARRSO has evolved over the years with the implementation of additional hardware, software, training programs and cooperative projects. This paper focuses on, but is not limited to, the activities of the Agro-Climatic and Environmental Monitoring Project (ACEMP) which began in 1980. Emphasis is placed on the contribution of the ACEMP to the development of the currently operational centralized remotely sensed data processing facility. This facility, which is located in Dhaka, Bangladesh is a major entity within SPARRSO and is of service to numerous active and potential local and national users. The current SPARRSO ACEM data processing system has evolved from serving a single group of meteorological applications, to its present unique position as a national resource for the processing of remotely sensed data for a wide variety of discipline applications. System upgrades are described. C1 SPARRSO,DHAKA,BANGLADESH. RP MAURER, HE (reprint author), NASA,GSFC,CODE 9302,BLDG 26,ROOM 127,GREENBELT,MD 20771, USA. NR 35 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0923-0408 J9 INFORM DECIS TECHNOL PY 1994 VL 19 IS 2 BP 77 EP 83 PG 7 WC Operations Research & Management Science SC Operations Research & Management Science GA MW162 UT WOS:A1994MW16200001 ER PT B AU TAMURA, M WERNER, MW BECKLIN, EE PHINNEY, ES AF TAMURA, M WERNER, MW BECKLIN, EE PHINNEY, ES BE McLean, IS TI DETECTION OF STELLAR VARIABILITY IN THE CENTRAL PARSEC OF THE GALAXY SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE INFRARED SOURCES; STARS; VARIABLES C1 JPL,PASADENA,CA 91109. NR 0 TC 2 Z9 2 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 117 EP 118 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00032 ER PT B AU GEZARI, DY BACKMAN, DE AF GEZARI, DY BACKMAN, DE BE McLean, IS TI 4.8-20-MU-M IMAGING OF ORION-BN-KL .2. A NEW LOOK AT LUMINOSITY SOURCES AND THE ROLE OF IRC2 SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE ORION-BN-KL; IRC2; INFRARED IMAGING C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 195 EP & PG 0 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00066 ER PT B AU WERNER, MW EISENHARDT, PR AF WERNER, MW EISENHARDT, PR BE McLean, IS TI ARRAYS - THE HEART AND SOUL OF SIRTF SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 269 EP 276 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00080 ER PT B AU JARRETT, TH BEICHMAN, CA VANBUREN, D GAUTIER, N JORQUERA, C BRUCE, C AF JARRETT, TH BEICHMAN, CA VANBUREN, D GAUTIER, N JORQUERA, C BRUCE, C BE McLean, IS TI PALOMAR PRIME-FOCUS INFRARED CAMERA (PFIRCAM) SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE INSTRUMENTATION; LINEARITY C1 CALTECH,JPL,IPAC,PASADENA,CA 91125. NR 0 TC 5 Z9 5 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 293 EP 294 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00088 ER PT B AU DEUTSCH, LK HORA, JL HOFFMANN, WF FAZIO, GG SHIVANANDAN, K AF DEUTSCH, LK HORA, JL HOFFMANN, WF FAZIO, GG SHIVANANDAN, K BE McLean, IS TI SOLAR-SYSTEM OBSERVATIONS WITH MIRAC SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE JUPITER; COMET SWIFT-TUTTLE; MERCURY; MIRAC C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 317 EP 318 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00100 ER PT B AU MCKELVEY, ME MCMURRAY, RE MCCREIGHT, CR FORREST, WJ GARNETT, JD LUM, N ASBROCK, J WHITE, R KELCHNER, R LUM, L PHAM, L AF MCKELVEY, ME MCMURRAY, RE MCCREIGHT, CR FORREST, WJ GARNETT, JD LUM, N ASBROCK, J WHITE, R KELCHNER, R LUM, L PHAM, L BE McLean, IS TI EVALUATION OF A 256X256 SI AS IBC DETECTOR ARRAY FOR ASTRONOMY SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE INFRARED FOCAL PLANE ARRAY; IMPURITY BAND CONDUCTION; SPACE ASTRONOMY C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 327 EP 328 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00105 ER PT B AU ROELLIG, TL COOPER, R DEUTSCH, LK MCCREIGHT, C MCKELVEY, M PENDLETON, YJ WITTEBORN, FC YUEN, L MCMAHON, T WERNER, MW AF ROELLIG, TL COOPER, R DEUTSCH, LK MCCREIGHT, C MCKELVEY, M PENDLETON, YJ WITTEBORN, FC YUEN, L MCMAHON, T WERNER, MW BE McLean, IS TI THE NASA - ARC 10 20 MICRON CAMERA SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE IR INSTRUMENTATION; IR CAMERA; IR ASTRONOMY C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 333 EP 334 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00108 ER PT B AU RESSLER, ME WERNER, MW VANCLEVE, J CHOU, HA AF RESSLER, ME WERNER, MW VANCLEVE, J CHOU, HA BE McLean, IS TI THE JPL DEEP-WELL MIDINFRARED ARRAY CAMERA SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 5 Z9 5 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 429 EP 432 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00130 ER PT B AU MAZZARELLA, JM VOIT, GM SOIFER, BT MATTHEWS, K ARMUS, L SHUPE, DL GRAHAM, JR AF MAZZARELLA, JM VOIT, GM SOIFER, BT MATTHEWS, K ARMUS, L SHUPE, DL GRAHAM, JR BE McLean, IS TI JHK AND 3.3 MU-M PAH IMAGING OF THE STARBURST RING IN THE TYPE-1 SEYFERT-GALAXY NGC-7469 SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE NGC 7469; STARBURST; INFRARED SPIRAL; PAH EMISSION C1 CALTECH,JET PROP LAB,CTR INFRARED PROC & ANAL,PASADENA,CA 91125. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 519 EP 520 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00154 ER PT B AU EISENHARDT, P LU, NY ELSTON, R MCCARTHY, P AF EISENHARDT, P LU, NY ELSTON, R MCCARTHY, P BE McLean, IS TI REST FRAME OPTICAL SPECTROSCOPY OF DISTANT RADIO GALAXIES SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 543 EP 544 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00166 ER PT B AU GEZARI, DY AF GEZARI, DY BE McLean, IS TI AN ATLAS OF MIDINFRARED (5-20 MU-M) ASTRONOMICAL SOURCES SO INFRARED ASTRONOMY WITH ARRAYS: THE NEXT GENERATION SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT Conference on Infrared Astronomy with Arrays: The Next Generation CY JUL, 1993 CL UNIV CALIF LOS ANGELES, LOS ANGELES, CA HO UNIV CALIF LOS ANGELES DE MIDINFRARED; ATLAS; IMAGE DATA C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7923-2778-0 J9 ASTROPHYS SPACE SC L PY 1994 VL 190 BP 549 EP 550 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82J UT WOS:A1994BA82J00168 ER PT B AU LIN, TL PARK, JS GUNAPALA, SD JONES, EW DELCASTILLO, HM AF LIN, TL PARK, JS GUNAPALA, SD JONES, EW DELCASTILLO, HM BE Longshore, RE TI SI1-XGEX/SI HETEROJUNCTION INTERNAL PHOTOEMISSION LONG WAVELENGTH INFRARED DETECTOR SO INFRARED DETECTORS: STATE OF THE ART II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Detectors - State of the Art II Conference CY JUL 24-25, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. NR 0 TC 1 Z9 2 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1598-7 J9 P SOC PHOTO-OPT INS PY 1994 VL 2274 BP 17 EP 23 DI 10.1117/12.189245 PG 7 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BB97B UT WOS:A1994BB97B00002 ER PT B AU CUNNINGHAM, TJ FOSSUM, ER AF CUNNINGHAM, TJ FOSSUM, ER BE Fossum, ER TI CRYOGENIC GAAS JFETS SO INFRARED READOUT ELECTRONICS II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Readout Electronics II CY APR 07-08, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. NR 0 TC 2 Z9 2 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1530-8 J9 P SOC PHOTO-OPT INS PY 1994 VL 2226 BP 14 EP 20 DI 10.1117/12.178479 PG 7 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA83X UT WOS:A1994BA83X00002 ER PT B AU PAIN, B FOSSUM, ER AF PAIN, B FOSSUM, ER BE Fossum, ER TI APPROACHES AND ANALYSIS FOR ON-FOCAL-PLANE ANALOG-TO-DIGITAL CONVERSION SO INFRARED READOUT ELECTRONICS II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Readout Electronics II CY APR 07-08, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. NR 0 TC 22 Z9 22 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1530-8 J9 P SOC PHOTO-OPT INS PY 1994 VL 2226 BP 208 EP 218 DI 10.1117/12.178483 PG 11 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA83X UT WOS:A1994BA83X00022 ER PT B AU KIM, Q ZAKHARIA, M AF KIM, Q ZAKHARIA, M BE Fossum, ER TI FUNCTIONAL VARIATION OF DUAL-GATE MOS-JFET CCD TEST STRUCTURE SO INFRARED READOUT ELECTRONICS II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Readout Electronics II CY APR 07-08, 1994 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 CALTECH,JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91214. 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 0-8194-1530-8 J9 P SOC PHOTO-OPT INS PY 1994 VL 2226 BP 237 EP 245 DI 10.1117/12.178488 PG 9 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA83X UT WOS:A1994BA83X00025 ER PT S AU JONES, HP AF JONES, HP BE Rabin, DM Jefferies, JT Lindsey, C TI INTERPRETING RECENT OBSERVATIONS OF HE-I-10830-ANGSTROM SO INFRARED SOLAR PHYSICS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 154th Symposium of the International-Astronomical-Union - 1st International Meeting devoted to Infrared Physics CY MAR 02-06, 1992 CL TUCSON, AZ SP INT ASTRON UNION DE HE-I-10830-ANGSTROM; INFRARED STARS; LINE FORMATION; SUN ATMOSPHERE; TECHNIQUES SPECTROSCOPIC C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 4 Z9 4 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-2522-2 J9 IAU SYMP PY 1994 IS 154 BP 49 EP 58 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ76S UT WOS:A1994BZ76S00006 ER PT S AU JENNINGS, DE DEMING, D MCCABE, G NOYES, R WIEDEMANN, G ESPENAK, F AF JENNINGS, DE DEMING, D MCCABE, G NOYES, R WIEDEMANN, G ESPENAK, F BE Rabin, DM Jefferies, JT Lindsey, C TI 12-MU-M OBSERVATIONS AT THE 1991 ECLIPSE SO INFRARED SOLAR PHYSICS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 154th Symposium of the International-Astronomical-Union - 1st International Meeting devoted to Infrared Physics CY MAR 02-06, 1992 CL TUCSON, AZ SP INT ASTRON UNION DE ECLIPSES; INFRARED STARS; MG I; SUN ATMOSPHERE C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Jennings, Donald/D-7978-2012 NR 0 TC 7 Z9 7 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-2522-2 J9 IAU SYMP PY 1994 IS 154 BP 151 EP 160 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ76S UT WOS:A1994BZ76S00019 ER PT S AU DEMING, D HEWAGAMA, T JENNINGS, DE MCCABE, G WIEDEMANN, G AF DEMING, D HEWAGAMA, T JENNINGS, DE MCCABE, G WIEDEMANN, G BE Rabin, DM Jefferies, JT Lindsey, C TI VECTOR MAGNETOMETRY USING THE 12-MU-M EMISSION-LINES SO INFRARED SOLAR PHYSICS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 154th Symposium of the International-Astronomical-Union - 1st International Meeting devoted to Infrared Physics CY MAR 02-06, 1992 CL TUCSON, AZ SP INT ASTRON UNION DE INFRARED STARS; INSTRUMENTATION POLARIMETERS; LINE FORMATION; SUN MAGNETIC FIELDS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Hewagama, T/C-8488-2012; Jennings, Donald/D-7978-2012 NR 0 TC 2 Z9 2 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-2522-2 J9 IAU SYMP PY 1994 IS 154 BP 379 EP 392 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ76S UT WOS:A1994BZ76S00047 ER PT S AU FARMER, CB AF FARMER, CB BE Rabin, DM Jefferies, JT Lindsey, C TI THE ATMOS SOLAR ATLAS SO INFRARED SOLAR PHYSICS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 154th Symposium of the International-Astronomical-Union - 1st International Meeting devoted to Infrared Physics CY MAR 02-06, 1992 CL TUCSON, AZ SP INT ASTRON UNION DE ARTIFICIAL SATELLITES, SPACE PROBES; INFRARED STARS; INSTRUMENTATION INTERFEROMETERS; SUN ATMOSPHERE C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 4 Z9 4 U1 0 U2 2 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-2522-2 J9 IAU SYMP PY 1994 IS 154 BP 511 EP 521 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ76S UT WOS:A1994BZ76S00061 ER PT S AU GEZARI, DY AF GEZARI, DY BE Rabin, DM Jefferies, JT Lindsey, C TI THE APPLICABILITY OF A 5-18-MU-M ARRAY CAMERA TO SOLAR IMAGING SO INFRARED SOLAR PHYSICS SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 154th Symposium of the International-Astronomical-Union - 1st International Meeting devoted to Infrared Physics CY MAR 02-06, 1992 CL TUCSON, AZ SP INT ASTRON UNION DE INFRARED GENERAL; INSTRUMENTATION DETECTORS; SUN GENERAL C1 NASA,GODDARD SPACE FLIGHT CTR,INFRARED ASTROPHYS BRANCH,GREENBELT,MD 20771. 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 0074-1809 BN 0-7923-2522-2 J9 IAU SYMP PY 1994 IS 154 BP 595 EP 601 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ76S UT WOS:A1994BZ76S00071 ER PT B AU ELLIOTT, D HACKING, P SCHEMBER, H AF ELLIOTT, D HACKING, P SCHEMBER, H BE Scholl, MS TI ENGINEERING DESIGN OF THE WIDE-FIELD INFRARED EXPLORER (WIRE) SO INFRARED SPACEBORNE REMOTE SENSING II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Spaceborne Remote Sensing II CY JUL 27-29, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS DE INFRARED SPACE TELESCOPES; INFRARED ARRAYS; STARBURST GALAXIES C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1592-8 J9 P SOC PHOTO-OPT INS PY 1994 VL 2268 BP 188 EP 195 DI 10.1117/12.185829 PG 8 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BB54V UT WOS:A1994BB54V00018 ER PT B AU HIMELBLAU, H PIERSOL, AG AF HIMELBLAU, H PIERSOL, AG GP INST ENVIRONM SCI TI GUIDELINES FOR DYNAMIC ENVIRONMENTAL CRITERIA - AN INVITATION TO PARTICIPATE IN THEIR DEVELOPMENT SO INSTITUTE OF ENVIRONMENTAL SCIENCES - 40TH ANNUAL TECHNICAL MEETING, EDUCATION FOR TECHNICAL EXCELLENCE, 1994 PROCEEDINGS, VOL 2: PRODUCT RELIABILITY - DESIGN, TEST, AND EVALUATION - 10TH REACTOR COMPONENT DIAGNOSTICS CONFERENCE LA English DT Proceedings Paper CT 40th Annual Technical Meeting of the Institute-of-Environmental-Sciences - Education for Technical Excellence CY MAY 01-06, 1994 CL CHICAGO, IL SP INST ENVIRONM SCI C1 JET PROP LAB,PASADENA,CA 91109. 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 1-877862-46-0 PY 1994 BP 231 EP 234 PG 4 WC Engineering, Environmental SC Engineering GA BB84C UT WOS:A1994BB84C00026 ER PT B AU NIKZAD, S HOENK, ME GRUNTHANER, PJ TERHUNE, RW GRUNTHANER, FJ WINZENREAD, R FATTAHI, M TSENG, HF LESSER, M AF NIKZAD, S HOENK, ME GRUNTHANER, PJ TERHUNE, RW GRUNTHANER, FJ WINZENREAD, R FATTAHI, M TSENG, HF LESSER, M BE Crawford, DL Craine, ER TI DELTA-DOPED CCDS - HIGH QE WITH LONG-TERM STABILITY AT UV AND VISIBLE WAVELENGTHS SO INSTRUMENTATION IN ASTRONOMY VIII, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 8th SPIE Conference on Instrumentation in Astronomy CY MAR 13-14, 1994 CL KONA, HI SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS, AMER ASTRON SOC, ASTRON SOC PACIFIC, EUROPEAN ASTRON SOC, OPT SOC AMER C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109. NR 0 TC 25 Z9 25 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1493-X J9 P SOC PHOTO-OPT INS PY 1994 VL 2198 BP 907 EP 915 DI 10.1117/12.176733 PN 1 & 2 PG 9 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BA90A UT WOS:A1994BA90A00095 ER PT B AU YEE, R AF YEE, R BE Crawford, DL Craine, ER TI SOFIA DATA MANAGEMENT, ACQUISITION, AND COMMUNICATION SUBSYSTEMS (DMACS) SO INSTRUMENTATION IN ASTRONOMY VIII, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 8th SPIE Conference on Instrumentation in Astronomy CY MAR 13-14, 1994 CL KONA, HI SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS, AMER ASTRON SOC, ASTRON SOC PACIFIC, EUROPEAN ASTRON SOC, OPT SOC AMER C1 NASA,AMES RES CTR,DIV SPACE PROJECTS,MOFFETT FIELD,CA 94035. 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 0-8194-1493-X J9 P SOC PHOTO-OPT INS PY 1994 VL 2198 BP 924 EP 934 DI 10.1117/12.176787 PN 1 & 2 PG 11 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BA90A UT WOS:A1994BA90A00097 ER PT B AU SHAKLAN, S PRAVDO, SH AF SHAKLAN, S PRAVDO, SH BE Crawford, DL Craine, ER TI ASTROMETRIC CALIBRATION OF ARRAY DETECTORS SO INSTRUMENTATION IN ASTRONOMY VIII, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 8th SPIE Conference on Instrumentation in Astronomy CY MAR 13-14, 1994 CL KONA, HI SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS, AMER ASTRON SOC, ASTRON SOC PACIFIC, EUROPEAN ASTRON SOC, OPT SOC AMER C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1493-X J9 P SOC PHOTO-OPT INS PY 1994 VL 2198 BP 1227 EP 1237 DI 10.1117/12.176810 PN 1 & 2 PG 11 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BA90A UT WOS:A1994BA90A00125 ER PT B AU DAVILA, P EICHHORN, W WILSON, M AF DAVILA, P EICHHORN, W WILSON, M BE Crawford, DL Craine, ER TI HARTMANN WAVE-FRONT SENSING OF THE CORRECTIVE OPTICS FOR THE HUBBLE-SPACE-TELESCOPE SO INSTRUMENTATION IN ASTRONOMY VIII, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 8th SPIE Conference on Instrumentation in Astronomy CY MAR 13-14, 1994 CL KONA, HI SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS, AMER ASTRON SOC, ASTRON SOC PACIFIC, EUROPEAN ASTRON SOC, OPT SOC AMER RP DAVILA, P (reprint author), NASA,GODDARD SPACE FLIGHT CTR,OPT BRANCH,GREENBELT,MD 20771, USA. 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 0-8194-1493-X J9 P SOC PHOTO-OPT INS PY 1994 VL 2198 BP 1261 EP 1272 DI 10.1117/12.176735 PN 1 & 2 PG 12 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BA90A UT WOS:A1994BA90A00128 ER PT B AU SEERY, BD KREBS, C SMITH, A HEAP, S BOLTON, J HANNAN, P SKILLMAN, DR NIEDNER, MB BROWN, RA CLAMPIN, M AF SEERY, BD KREBS, C SMITH, A HEAP, S BOLTON, J HANNAN, P SKILLMAN, DR NIEDNER, MB BROWN, RA CLAMPIN, M BE Crawford, DL Craine, ER TI HUBBLE-SPACE-TELESCOPE ADVANCED CAMERA CONCEPTUAL DESIGN SO INSTRUMENTATION IN ASTRONOMY VIII, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 8th SPIE Conference on Instrumentation in Astronomy CY MAR 13-14, 1994 CL KONA, HI SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS, AMER ASTRON SOC, ASTRON SOC PACIFIC, EUROPEAN ASTRON SOC, OPT SOC AMER C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Skillman, David/C-8995-2013 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 0-8194-1493-X J9 P SOC PHOTO-OPT INS PY 1994 VL 2198 BP 1298 EP 1314 DI 10.1117/12.176814 PN 1 & 2 PG 17 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BA90A UT WOS:A1994BA90A00131 ER PT J AU ATWATER, JE WHEELER, RR SAUER, RL SCHULTZ, JR AF ATWATER, JE WHEELER, RR SAUER, RL SCHULTZ, JR TI A MULTIPLEXED 4 CHANNEL ONLINE IODINE MONITOR SO INSTRUMENTATION SCIENCE & TECHNOLOGY LA English DT Article AB A robust autonomous system is described for the spectrophotometric determination of aqueous elemental iodine in multiple flowing process streams. The quantitative methodology uses characteristic absorbance at 460 nm, corrected for baseline drift using absorbance at 600 nm. Linear dynamic ranges of 0.2 - 25 mg/L, 0.4 - 45 mg/L, and 2 - 250 mg/L have been attained using path lengths of 1 cm, 5 cm, and 10 cm respectively. The multiplexed iodine monitor has proven capable of continuous operation for periods of up to eighteen months. C1 NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. KRUG LIFE SCI,HOUSTON,TX 77058. RP ATWATER, JE (reprint author), UMPQUA RES CO,POB 791,MYRTLE CREEK,OR 97457, USA. NR 17 TC 5 Z9 5 U1 0 U2 1 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 1073-9149 J9 INSTRUM SCI TECHNOL JI Instrum. Sci. Technol. PY 1994 VL 22 IS 3 BP 217 EP 229 DI 10.1080/10739149408000451 PG 13 WC Chemistry, Analytical; Instruments & Instrumentation SC Chemistry; Instruments & Instrumentation GA PM259 UT WOS:A1994PM25900001 ER PT B AU BEHEIM, G SOTOMAYOR, JL TUMA, ML TABIBAZAR, M AF BEHEIM, G SOTOMAYOR, JL TUMA, ML TABIBAZAR, M BE TabibAzar, M Polla, DL Wong, KK TI FIBER-OPTIC TEMPERATURE SENSOR USING LASER ANNEALED SILICON FILM SO INTEGRATED OPTICS AND MICROSTRUCTURES II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 2nd Conference on Integrated Optics and Microstructures, at the SPIE International Symposium on Optics, Imaging, and Instrumentation CY JUL 26-28, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-8194-1615-0 J9 P SOC PHOTO-OPT INS PY 1994 VL 2291 BP 92 EP 98 DI 10.1117/12.190897 PG 7 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BB97F UT WOS:A1994BB97F00010 ER PT B AU Hubeny, I AF Hubeny, I BE Shafter, AW TI Vertical structure and theoretical spectra of accretion disks SO INTERACTING BINARY STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Symposium on Interacting Binary Stars/105th Meeting of the Astronomical-Society-of-the-Pacific CY JUL 13-15, 1993 CL SAN DIEGO STATE UNIV, SAN DIEGO, CA SP Astron Soc Pacific HO SAN DIEGO STATE UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,UNIV SPACE RES ASSOC,GREENBELT,MD 20771. 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 0-937707-75-9 J9 ASTR SOC P PY 1994 VL 56 BP 3 EP 12 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33V UT WOS:A1994BE33V00001 ER PT B AU Plavec, MJ Hubeny, I AF Plavec, MJ Hubeny, I BE Shafter, AW TI Accretion in ''ordinary'' interacting binaries SO INTERACTING BINARY STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Symposium on Interacting Binary Stars/105th Meeting of the Astronomical-Society-of-the-Pacific CY JUL 13-15, 1993 CL SAN DIEGO STATE UNIV, SAN DIEGO, CA SP Astron Soc Pacific HO SAN DIEGO STATE UNIV C1 UNIV CALIF LOS ANGELES,DEPT ASTRON,LOS ANGELES,CA 90024. NASA,GODDARD SPACE FLIGHT CTR,USRA,GREENBELT,MD 20771. NR 0 TC 4 Z9 4 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-75-9 J9 ASTR SOC P PY 1994 VL 56 BP 87 EP 99 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33V UT WOS:A1994BE33V00008 ER PT B AU Ake, TB Johnson, HR Bopp, BW AF Ake, TB Johnson, HR Bopp, BW BE Shafter, AW TI The unusual interacting S star binary HR 1105 SO INTERACTING BINARY STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Symposium on Interacting Binary Stars/105th Meeting of the Astronomical-Society-of-the-Pacific CY JUL 13-15, 1993 CL SAN DIEGO STATE UNIV, SAN DIEGO, CA SP Astron Soc Pacific HO SAN DIEGO STATE UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,COMP SCI CORP,ASTRON PROGRAM,GREENBELT,MD 20771. 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 0-937707-75-9 J9 ASTR SOC P PY 1994 VL 56 BP 413 EP 416 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BE33V UT WOS:A1994BE33V00057 ER PT S AU MISRA, AK AF MISRA, AK BE Graves, JA Bowman, RR Lewandowski, JJ TI FIBERS AND FIBER COATINGS FOR IMCS SO INTERMETALLIC MATRIX COMPOSITES III SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Intermetallic Matrix Composites III CY APR 04-06, 1994 CL SAN FRANCISCO, CA SP USN, OFF NAVAL RES, NASA, LEWIS RES CTR, ROCKWELL INT SCI CTR, CONCURRENT TECHNOL CORP, SAPHIKON INC C1 NASA,LEWIS RES CTR GRP,NYMA INC,CLEVELAND,OH 44135. NR 0 TC 7 Z9 7 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-250-2 J9 MATER RES SOC SYMP P PY 1994 VL 350 BP 73 EP 87 PG 15 WC Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Metallurgy & Metallurgical Engineering; Materials Science GA BB55M UT WOS:A1994BB55M00010 ER PT S AU BOWMAN, RR LOCCI, IE DRAPER, SL MISRA, AK AF BOWMAN, RR LOCCI, IE DRAPER, SL MISRA, AK BE Graves, JA Bowman, RR Lewandowski, JJ TI STRENGTH OF SINGLE-CRYSTAL AL2O3 FIBERS IN NI-BASED INTERMETALLIC AND SUPERALLOY COMPOSITES SO INTERMETALLIC MATRIX COMPOSITES III SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Intermetallic Matrix Composites III CY APR 04-06, 1994 CL SAN FRANCISCO, CA SP USN, OFF NAVAL RES, NASA, LEWIS RES CTR, ROCKWELL INT SCI CTR, CONCURRENT TECHNOL CORP, SAPHIKON INC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 4 Z9 4 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-250-2 J9 MATER RES SOC SYMP P PY 1994 VL 350 BP 105 EP 110 PG 6 WC Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Metallurgy & Metallurgical Engineering; Materials Science GA BB55M UT WOS:A1994BB55M00013 ER PT S AU HEBSUR, MG AF HEBSUR, MG BE Graves, JA Bowman, RR Lewandowski, JJ TI PEST RESISTANT AND LOW CTE MOSI2-MATRIX FOR HIGH-TEMPERATURE STRUCTURAL APPLICATIONS SO INTERMETALLIC MATRIX COMPOSITES III SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Intermetallic Matrix Composites III CY APR 04-06, 1994 CL SAN FRANCISCO, CA SP USN, OFF NAVAL RES, NASA, LEWIS RES CTR, ROCKWELL INT SCI CTR, CONCURRENT TECHNOL CORP, SAPHIKON INC C1 NASA,LERC GRP,NYMA INC,BROOKPARK,OH 44142. NR 0 TC 20 Z9 20 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-250-2 J9 MATER RES SOC SYMP P PY 1994 VL 350 BP 177 EP 182 PG 6 WC Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Metallurgy & Metallurgical Engineering; Materials Science GA BB55M UT WOS:A1994BB55M00022 ER PT S AU GARG, A WHITTENBERGER, JD AIKIN, BJM AF GARG, A WHITTENBERGER, JD AIKIN, BJM BE Graves, JA Bowman, RR Lewandowski, JJ TI MICROSTRUCTURAL CHARACTERIZATION OF CREEP TESTED CRYOMILLED NIAL-13VOL-PERCENT ALN SO INTERMETALLIC MATRIX COMPOSITES III SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Intermetallic Matrix Composites III CY APR 04-06, 1994 CL SAN FRANCISCO, CA SP USN, OFF NAVAL RES, NASA, LEWIS RES CTR, ROCKWELL INT SCI CTR, CONCURRENT TECHNOL CORP, SAPHIKON INC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 7 Z9 7 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-250-2 J9 MATER RES SOC SYMP P PY 1994 VL 350 BP 231 EP 236 PG 6 WC Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Metallurgy & Metallurgical Engineering; Materials Science GA BB55M UT WOS:A1994BB55M00030 ER PT J AU HEBSUR, MG AF HEBSUR, MG TI STUDIES ON TUNGSTEN (WHFC) FILAMENT-REINFORCED NBAL3-BASE ALLOY SO INTERMETALLICS LA English DT Article DE NIOBIUM ALUMINIDE; DUCTILE PHASE REINFORCEMENT; CTE MISMATCH; THERMAL CYCLING; CHEMICAL COMPATIBILITY ID MECHANICAL-PROPERTIES; COMPOSITE AB Hafnium carbide dispersion strengthened tungsten (WHfC) filaments were used as a ductile phase reinforcement to improve the low temperature toughness of an oxidation resistant NbAl3-base alloy with Cr, Y and W additions. The WHfC/NbA1CrYW composite was prepared by the powder cloth technique. The composite specimens were thermally cycled between 500 and 1300 K to examine the influence of CTE mismatch on matrix cracking. The thermal stability was assessed by annealing at 1500 K in argon for up to 100 h. The mechanical properties of the monolithic NbAlCrYW and the WHfC/NbAlCrYW composite were measured from bend tests between 300 and 1300 K in as-fabricated, thermally cycled and annealed conditions. The composite was significantly tougher and stronger than the monolithic NbAlCrYW alloy at all temperatures and in all conditions. The ultimate bend strength and work-of-fracture of the composite decreased with increasing temperature. Thermal cycling up to 1000 times resulted in severe cracking of the matrix due to the CTE mismatch. Interfacial reactions at 1500 K between the NbAlCrYW matrix and the WHfC filament formed a complex phase rich in Cr, Al and W. The thickness of the reaction zone exhibited parabolic growth. The formation of this phase resulted in significant degradation in toughness and strength after annealing at 1500 K for 100 h. RP HEBSUR, MG (reprint author), NASA,LEWIS RES CTR GRP,SVERDRUP TECHNOL INC,BROOKPARK,OH 44142, USA. NR 22 TC 7 Z9 8 U1 0 U2 3 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0966-9795 J9 INTERMETALLICS JI Intermetallics PY 1994 VL 2 IS 1 BP 43 EP 54 DI 10.1016/0966-9795(94)90050-7 PG 12 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA MW008 UT WOS:A1994MW00800006 ER PT J AU WHITTENBERGER, JD RAY, R FARMER, SC AF WHITTENBERGER, JD RAY, R FARMER, SC TI ELEVATED-TEMPERATURE DEFORMATION PROPERTIES OF IN-SITU CARBIDE PARTICLE STRENGTHENED TI-48AL MATERIALS SO INTERMETALLICS LA English DT Article DE TIAL; TITANIUM ALUMINIDES; CREEP; ALTI2C PRECIPITATES; C SOLID SOLUTION STRENGTHENING ID INTERMETALLIC COMPOUND; CREEP DEFORMATION; GRAIN-SIZE; GAMMA; TI-53.4MOL-PERCENT-AL; BEHAVIOR; ALLOYS; 1100-K AB Titanium aluminides have been alloyed with TiC in an effort to improve elevated temperature creep resistance through the precipitation of AlTi2C particles in the form of short rods while maintaining the room temperature 'tensile properties of the matrix. Duplex microstructure Ti-45/48Al matrices containing 0-31 vol.% carbide were produced by melting and casting followed by hot isostatic pressing at 1573 K. None of the alloys possessed ductility at room temperature; however, 1073-1273 K tension testing indicated that the AlTi2C containing materials were both strong and generally ductile at these temperatures. Compressive creep testing between 1000 and 1200 K failed to reveal any correlation between strength and volume fraction of carbide with the 8-5 vol.% material possessing the best properties. In addition, the stress exponent and activation energy for deformation for this composite and the unreinforced matrix were identical. These results suggest that elevated temperature strengthening is the result of carbon in solution rather than the rod-shaped AlTi2C precipitates. C1 MARKO MAT INC,N BILLERICA,MA. RP WHITTENBERGER, JD (reprint author), NASA,LEWIS RES CTR,MS 49-1,21000 BROOKPK RD,CLEVELAND,OH 44135, USA. NR 19 TC 16 Z9 16 U1 0 U2 2 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0966-9795 J9 INTERMETALLICS JI Intermetallics PY 1994 VL 2 IS 3 BP 167 EP 178 DI 10.1016/0966-9795(94)90055-8 PG 12 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA NR818 UT WOS:A1994NR81800002 ER PT J AU WHITTENBERGER, JD NATHAL, MV GAYDOSH, DJ AF WHITTENBERGER, JD NATHAL, MV GAYDOSH, DJ TI COMPRESSIVE AND TENSILE CREEP IN FE-40AL-0.1ZR-0.4B AT 1100-K SO INTERMETALLICS LA English DT Article DE IRON ALUMINIDE; FEAL; CREEP; MECHANICAL PROPERTIES; CREEP CAVITIES; PRECIPITATION-HARDENING ID SLOW PLASTIC-FLOW; AL-ALLOYS; FEAL AB The 1100 K compressive and tensile creep behavior of the B2 crystal structure aluminide Fe-40Al-0.1Zr-0.4B (atom%) containing Fe6Al6Zr precipitates has been investigated. While the Zr/B alloying additions yielded considerable improvements in strength, the quaternary alloy was still relatively weak: almost-equal-to 30 MPa produced 1% strain in 100 h. The creep rates in tension exceeded those measured in compression and this difference could be ascribed to the formation of creep cavities in tension but not in compression. By comparison to existing deformation models, it is believed that the increased tensile creep rates. are explicable through the power-law-accommodated constrained-diffusion cavity-growth model. RP WHITTENBERGER, JD (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 15 TC 19 Z9 19 U1 0 U2 2 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0966-9795 J9 INTERMETALLICS JI Intermetallics PY 1994 VL 2 IS 3 BP 193 EP 200 DI 10.1016/0966-9795(94)90058-2 PG 8 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA NR818 UT WOS:A1994NR81800005 ER PT B AU SIMONS, RN KELLY, E LEE, RQ TAUB, SR AF SIMONS, RN KELLY, E LEE, RQ TAUB, SR BE Afsar, MN TI LINEARLY TAPERED SLOT ANTENNA CIRCULAR ARRAY FOR MOBILE COMMUNICATIONS SO INTERNATIONAL CONFERENCE ON MILLIMETER AND SUBMILLIMETER WAVES AND APPLICATIONS: CONFERENCE DIGEST SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT International Conference on Millimeter and Submillimeter Waves and Applications CY JAN 10-14, 1994 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 SVERDRUP TECHNOL INC,NASA,LERC GRP,CLEVELAND,OH 44135. 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 0-8194-1558-8 J9 P SOC PHOTO-OPT INS PY 1994 VL 2250 BP 20 EP 22 PG 3 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA03L UT WOS:A1994BA03L00009 ER PT B AU CRANE, DF HAMORY, PJ AF CRANE, DF HAMORY, PJ BE Wilsey, PA Rhodes, D TI REACTIVE SYSTEM VERIFICATION CASE-STUDY - FAULT-TOLERANT TRANSPUTER COMMUNICATION SO INTERNATIONAL CONFERENCE ON SIMULATION AND HARDWARE DESCRIPTION LANGUAGES (ICSHDL): PROCEEDINGS OF THE 1994 WESTERN MULTICONFERENCE LA English DT Proceedings Paper CT International Conference on Simulation and Hardware Description Languages (ICSHDL)/1994 Western Multiconference CY JAN 24-26, 1994 CL TEMPE, AZ SP SOC COMP SIMULAT C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC COMPUTER SIMULATION INT PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92177 BN 1-56555-070-6 PY 1994 BP 103 EP 112 PG 10 WC Computer Science, Hardware & Architecture; Computer Science, Interdisciplinary Applications SC Computer Science GA BB01L UT WOS:A1994BB01L00016 ER PT B AU CURREN, AN DAYTON, JA PALMER, RW LONG, KJ FORCE, DA WEEDER, CE ZACHAR, ZA HARVEY, WL AF CURREN, AN DAYTON, JA PALMER, RW LONG, KJ FORCE, DA WEEDER, CE ZACHAR, ZA HARVEY, WL GP IEEE, ELECTRON DEVICES SOC TI THE CASSINI MISSION KA-BAND TWT SO INTERNATIONAL ELECTRON DEVICES MEETING 1994 - IEDM TECHNICAL DIGEST LA English DT Proceedings Paper CT 1994 IEEE International Electron Devices Meeting CY DEC 11-14, 1994 CL SAN FRANCISCO, CA SP IEEE, ELECTRON DEVICES SOC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-7803-2111-1 PY 1994 BP 783 EP 786 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BC55U UT WOS:A1994BC55U00178 ER PT J AU TISCHLER, MB AF TISCHLER, MB TI SPECIAL ISSUE - AIRCRAFT FLIGHT CONTROL - GUEST EDITORIAL SO INTERNATIONAL JOURNAL OF CONTROL LA English DT Editorial Material RP TISCHLER, MB (reprint author), AMES RES CTR,USA AVIAT & TROOP COMMAND,AEROFLIGHT DIRECTORATE,FLIGHT CONTROL BRANCH,MOFFETT FIELD,CA 94035, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0020-7179 J9 INT J CONTROL JI Int. J. Control PD JAN PY 1994 VL 59 IS 1 BP 1 EP 2 PG 2 WC Automation & Control Systems SC Automation & Control Systems GA MT105 UT WOS:A1994MT10500001 ER PT J AU CLARKE, R BURKEN, JJ BOSWORTH, JT BAUER, JE AF CLARKE, R BURKEN, JJ BOSWORTH, JT BAUER, JE TI X-29 FLIGHT CONTROL-SYSTEM - LESSONS LEARNED SO INTERNATIONAL JOURNAL OF CONTROL LA English DT Article ID DESIGN AB Two X-29A aircraft were flown at the NASA Dryden Flight Research Facility over a period of eight years. The airplanes' unique features are the forward-swept wing, variable incidence close-coupled canard and highly relaxed longitudinal static stability (up to 35% negative static margin at subsonic conditions). This paper describes the primary flight control system and significant modifications made to this system, flight test techniques used during envelope expansion, and results for the low and high angle-of-attack programmes. Throughout the paper, lessons learned will be discussed to illustrate the problems associated with the implementation of complex night control systems. RP CLARKE, R (reprint author), NASA,DRYDEN FLIGHT RES FACIL,EDWARDS AFB,CA 93523, USA. NR 21 TC 3 Z9 4 U1 3 U2 3 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0020-7179 J9 INT J CONTROL JI Int. J. Control PD JAN PY 1994 VL 59 IS 1 BP 199 EP 219 DI 10.1080/00207179408923075 PG 21 WC Automation & Control Systems SC Automation & Control Systems GA MT105 UT WOS:A1994MT10500010 ER PT J AU FRANKLIN, JA AF FRANKLIN, JA TI APPLICATION OF NONLINEAR INVERSE METHODS TO THE CONTROL OF POWERED-LIFT AIRCRAFT OVER THE LOW-SPEED FLIGHT ENVELOPE SO INTERNATIONAL JOURNAL OF CONTROL LA English DT Article AB This paper presents a summary of experience in the design of velocity vector control systems for operation of short take-off and landing (STOL) and short take-off and vertical landing (STOVL) aircraft over their low-speed flight envelopes. A nonlinear inverse control method developed at NASA Ames Research Center was employed to deal with the highly nonlinear, multi-dimensional aerodynamic and propulsion system characteristics that are inherent in these aircraft. The method partitions the control system into a command element that is defined solely by the dynamic response to achieve good flying qualities, and a nonlinear inverse element that computes the aerodynamic and propulsion control effector positions required to satisfy the pilot's commands and to regulate against disturbances. Experience gained at flight evaluations with a powered-lift STOL aircraft and in piloted simulation with a STOVL aircraft design indicates that this system design approach produces the desired flying qualities over the low-speed flight envelope in the presence of a wide range of wind and turbulence disturbances. RP FRANKLIN, JA (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 5 TC 1 Z9 1 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0020-7179 J9 INT J CONTROL JI Int. J. Control PD JAN PY 1994 VL 59 IS 1 BP 321 EP 335 DI 10.1080/00207179408923080 PG 15 WC Automation & Control Systems SC Automation & Control Systems GA MT105 UT WOS:A1994MT10500015 ER PT J AU ZIMMERMAN, ML LEE, RQ AF ZIMMERMAN, ML LEE, RQ TI USE OF THE FDTD METHOD IN THE DESIGN OF MICROSTRIP ANTENNA-ARRAYS SO INTERNATIONAL JOURNAL OF MICROWAVE AND MILLIMETER-WAVE COMPUTER-AIDED ENGINEERING LA English DT Article ID DIFFERENCE TIME-DOMAIN; ABSORBING BOUNDARY-CONDITIONS; FINITE; RADIATION AB The finite-difference time-domain (FDTD) method is a widely used numerical technique for computer-aided design (CAD) of printed antennas and arrays. This technique can accurately predict performance characteristics of complex microstrip antennas, including the effects of parasitic elements and aperture-coupled feeds. In the case of arrays, mutual coupling effects between closely packed elements can also be modeled. This article will examine the advantages and limitations of the FDTD method for CAD of microstrip arrays. Calculated results are compared with experiment for a 3-patch coplanar parasitic patch array. (C) 1994 John Wiley & Sons, Inc. RP ZIMMERMAN, ML (reprint author), NASA,LEWIS RES CTR,ANALEX CORP,CLEVELAND,OH 44135, USA. NR 19 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1050-1827 J9 INT J MICROWAVE MILL JI Int. J. Microw. Millimeter-Wave Comput.-Aided Eng. PD JAN PY 1994 VL 4 IS 1 BP 58 EP 66 DI 10.1002/mmce.4570040109 PG 9 WC Computer Science, Interdisciplinary Applications; Engineering, Electrical & Electronic SC Computer Science; Engineering GA ML424 UT WOS:A1994ML42400008 ER PT J AU VANBIBBER, K STOFFL, W ANTHONY, PL SIKIVIE, P SULLIVAN, NS TANNER, DB ZELEZNY, V GOLUBEV, NA KAZACHENKO, OV KRAVCHUK, LV KUZMIN, V ROMANOV, GV SEKACHEV, IV ROSENBERG, LJ HAGMANN, C MOLTZ, DM NEZRICK, F TURNER, MS VILLA, F AF VANBIBBER, K STOFFL, W ANTHONY, PL SIKIVIE, P SULLIVAN, NS TANNER, DB ZELEZNY, V GOLUBEV, NA KAZACHENKO, OV KRAVCHUK, LV KUZMIN, V ROMANOV, GV SEKACHEV, IV ROSENBERG, LJ HAGMANN, C MOLTZ, DM NEZRICK, F TURNER, MS VILLA, F TI A NEXT-GENERATION CAVITY MICROWAVE EXPERIMENT TO SEARCH FOR DARK-MATTER AXIONS SO INTERNATIONAL JOURNAL OF MODERN PHYSICS D LA English DT Article; Proceedings Paper CT 1st IFT Workshop on Dark Matter CY FEB 14-16, 1992 CL UNIV FLORIDA, DEPT PHYS, INST FUNDAMENTAL THEORY, GAINESVILLE, FL SP UNIV FLORIDA, DEPT PHYS, INST FUNDAMENTAL THEORY HO UNIV FLORIDA, DEPT PHYS, INST FUNDAMENTAL THEORY ID CP CONSERVATION AB We propose a large-scale experimental search for dark-matter axions which may constitute an important fraction of our own galactic halo. As shown by Sikivie,(1) dark-matter axions may be detected by their stimulated conversion into monochromatic microwave photons in a tunable high-and cavity inside a strong magnetic field. The principal improvement in power sensitivity over two earlier pilot experiments (x 25) derives from the large-volume high field superconducting magnet (the NASA SUMMA coils). The improvement in mass range (1.5 to 12.6 mu eV) will result from the use of several microwave cavity arrays, of 2(n) cavities each, over the course of the experimental program, rather than a single cavity. We are participating in a joint venture with the Institute for Nuclear Research of the Russian Academy of Sciences to do R&D on metalized precision-formed ceramic microwave cavities for the axion search. C1 UNIV FLORIDA,DEPT PHYS,GAINESVILLE,FL 32611. RUSSIAN ACAD SCI,INST NUCL RES,MOSCOW 117312,RUSSIA. MIT,DEPT PHYS,CAMBRIDGE,MA 02139. UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720. UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,DIV NUCL SCI,BERKELEY,CA 94720. FERMILAB NATL ACCELERATOR LAB,NASA,FERMILAB ASTROPHYS CTR,BATAVIA,IL 60510. UNIV CHICAGO,DEPT PHYS & ASTRON,CHICAGO,IL 60637. STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94305. RP VANBIBBER, K (reprint author), LAWRENCE LIVERMORE NATL LAB,POB 808,LIVERMORE,CA 94550, USA. RI Zelezny, Vladimir/G-7420-2014 OI Zelezny, Vladimir/0000-0003-0991-2025 NR 18 TC 13 Z9 13 U1 0 U2 0 PU WORLD SCIENTIFIC PUBL CO PTE LTD PI SINGAPORE PA JOURNAL DEPT PO BOX 128 FARRER ROAD, SINGAPORE 9128, SINGAPORE SN 0218-2718 J9 INT J MOD PHYS D JI Int. J. Mod. Phys. D PY 1994 VL 3 SU S BP 33 EP 42 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA QA779 UT WOS:A1994QA77900004 ER PT J AU ELISHAKOFF, I CAI, GQ STARNES, JH AF ELISHAKOFF, I CAI, GQ STARNES, JH TI NONLINEAR BUCKLING OF A COLUMN WITH INITIAL IMPERFECTION VIA STOCHASTIC AND NONSTOCHASTIC CONVEX MODELS SO INTERNATIONAL JOURNAL OF NON-LINEAR MECHANICS LA English DT Article AB Buckling of initial imperfection sensitive structure - column on a non-linear elastic foundation - is investigated. A criterion based on the concept of ''modal buckling load'' is proposed to determine which modes should be included in the analysis when the weighted residuals method is utilized to calculate the limit load - maximum load the structure can support - for a given initial deflection. For stochastic analysis, a random field model is suggested for the uncertain initial imperfection, and Monte Carlo simulations are performed to obtain the probability density of the buckling load and the reliability of the column. Finally, a non-stochastic convex model of uncertainty is employed to describe a situation when only limited information is available on uncertain initial deflection, and the minimum buckling load is obtained for this model. The results from both the stochastic and the non-stochastic approaches are derived and critically contrasted. C1 FLORIDA ATLANTIC UNIV,DEPT MECH ENGN,BOCA RATON,FL 33431. NASA,LANGLEY RES CTR,HAMPTON,VA 23665. RP ELISHAKOFF, I (reprint author), FLORIDA ATLANTIC UNIV,CTR APPL STOCHAST RES,BOCA RATON,FL 33431, USA. NR 18 TC 49 Z9 54 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7462 J9 INT J NONLINEAR MECH JI Int. J. Non-Linear Mech. PD JAN PY 1994 VL 29 IS 1 BP 71 EP 82 DI 10.1016/0020-7462(94)90053-1 PG 12 WC Mechanics SC Mechanics GA MR610 UT WOS:A1994MR61000007 ER PT J AU ARNOLD, SM SALEEB, AF AF ARNOLD, SM SALEEB, AF TI ON THE THERMODYNAMIC FRAMEWORK OF GENERALIZED COUPLED THERMOELASTIC VISCOPLASTIC DAMAGE MODELING SO INTERNATIONAL JOURNAL OF PLASTICITY LA English DT Article ID CONSTITUTIVE RELATIONS; DEFORMATION; EQUATIONS; METALS; SOLIDS AB A complete potential based framework utilizing internal state variables is put forth for the derivation of reversible and irreversible constitutive equations. In this framework, the existence of the total (integrated) form of either the (Helmholtz) free energy or the (Gibbs) complementary free energy are assumed a priori. Two options for describing the flow and evolutionary equations are described, wherein option one (the fully coupled form) is shown to be over restrictive and the second option (the decoupled form) provides significant flexibility. As a consequence of the decoupled form, a new operator, that is, the compliance operator, is defined, which provides a link between the assumed Gibb's and complementary dissipation potential and ensures a number of desirable numerical features, for example, the symmetry of the resulting consistent tangent stiffness matrix. An important conclusion reached is that although many theories in the literature do not conform to the general potential framework outlined, it is still possible in some cases, by slight modifications of the employed forms, to restore the complete potential structure. C1 UNIV AKRON,AKRON,OH 44325. RP ARNOLD, SM (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 44 TC 44 Z9 44 U1 0 U2 3 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 1994 VL 10 IS 3 BP 263 EP 278 DI 10.1016/0749-6419(94)90003-5 PG 16 WC Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Engineering; Materials Science; Mechanics GA NL079 UT WOS:A1994NL07900003 ER PT J AU PARLAKTUNA, O COOK, GE STRAUSS, AM FERNANDEZ, KR AF PARLAKTUNA, O COOK, GE STRAUSS, AM FERNANDEZ, KR TI FINE ATTITUDE-CONTROL OF SPACE-VEHICLES USING SPACE MANIPULATORS SO INTERNATIONAL JOURNAL OF ROBOTICS & AUTOMATION LA English DT Article DE SPACE MANIPULATOR SYSTEM AB Space vehicles rotate in space in response to internal and external forces. For some orientations, their attitude must be corrected to achieve mission objectives. The orientation of a space vehicle can be changed using reaction jets and/or wheels. This increases the cost and complexity of the system. However, existing manipulator systems on the vehicle may be used to change spacecraft orientation. In this paper an algorithm is presented to correct attitude of a space vehicle using space manipulators. C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. RP PARLAKTUNA, O (reprint author), VANDERBILT UNIV,NASHVILLE,TN 37240, USA. NR 9 TC 1 Z9 1 U1 0 U2 0 PU IASTED PI ANAHEIM PA 1811 WEST KATELLA AVE #101, ANAHEIM, CA 92804 SN 0826-8185 J9 INT J ROBOT AUTOM JI Int. J. Robot. Autom. PY 1994 VL 9 IS 1 BP 29 EP 35 PG 7 WC Automation & Control Systems; Robotics SC Automation & Control Systems; Robotics GA QE648 UT WOS:A1994QE64800004 ER PT J AU CATAPANG, DR TISCHLER, MB BIEZAD, DJ AF CATAPANG, DR TISCHLER, MB BIEZAD, DJ TI ROBUST CROSSFEED DESIGN FOR HOVERING ROTORCRAFT SO INTERNATIONAL JOURNAL OF ROBUST AND NONLINEAR CONTROL LA English DT Article DE FLIGHT CONTROL; ROTORCRAFT; CROSSFEED AB Control law design for rotorcraft fly-by-wire systems normally attempts to decouple the angular responses using fixed-gain crossfeeds. This approach can lead to poor decoupling over the frequency range of pilot inputs and increase the load on the feedback loops. In order to improve the decoupling performance, dynamic crossfeeds should be adopted. Moreover, because of the large changes that occur in the aircraft dynamics due to small changes about the nominal design condition, especially for near-hovering flight, the crossfeed design must be 'robust'. A new low-order matching method is presented here to design robust crossfeed compensators for multi-input, multi-output (MIMO) systems. The technique minimizes cross-coupling given an anticipated set of parameter variations for the range of flight conditions of concern. Results are presented in this paper of an analysis of the pitch/roll coupling of the UH-60 Black Hawk helicopter in near-hovering flight. A robust crossfeed is designed that shows significant improvement in decoupling performance and robustness over the fixed-gain or single point dynamic compensators. The design method and results are presented in an easily used graphical format that lends significant physical insight to the design procedure. This plant precompensation technique is an appropriate preliminary step to the design of robust feedback control laws for rotorcraft. C1 CALIF POLYTECH STATE UNIV SAN LUIS OBISPO,DEPT AERONAUT ENGN,SAN LUIS OBISPO,CA 93407. USA,AEROFLIGHTDYNAM DIRECTORATE,AMES RES CTR,MOFFETT FIELD,CA. CALIF POLYTECH STATE UNIV SAN LUIS OBISPO,DEPT AERONAUT ENGN,SAN LUIS OBISPO,CA 93407. NR 17 TC 9 Z9 9 U1 0 U2 2 PU JOHN WILEY & SONS LTD PI W SUSSEX PA BAFFINS LANE CHICHESTER, W SUSSEX, ENGLAND PO19 1UD SN 1049-8923 J9 INT J ROBUST NONLIN JI Int. J. Robust Nonlinear Control PD JAN-FEB PY 1994 VL 4 IS 1 BP 161 EP 180 DI 10.1002/rnc.4590040110 PG 20 WC Automation & Control Systems; Engineering, Electrical & Electronic; Mathematics, Applied SC Automation & Control Systems; Engineering; Mathematics GA MZ278 UT WOS:A1994MZ27800009 ER PT J AU MINTER, JA HOYNIAK, D FLEETER, S AF MINTER, JA HOYNIAK, D FLEETER, S TI OSCILLATING FLAPS FOR CONTROL OF TURBOMACHINE WAKE GENERATED DISCRETE FREQUENCY NOISE SO INTERNATIONAL JOURNAL OF TURBO & JET-ENGINES LA English DT Article AB A mathematical model is developed to analyze active control of discrete frequency noise generation by subsonic turbomachine blade rows through cancellation of propagating acoustic waves. This is accomplished by utilizing oscillating leading and trailing edge flaps to generate control pressure waves which cancel the propagating acoustic waves and, thus, the far field discrete tones. Application of this model to a fan exit guide vane found that the oscillation amplitudes required to cancel the propagating acoustic waves are significantly smaller for the trailing flaps than for the leading flaps, particularly for small chord length flaps. However, the leading edge flap motion also decreased the non-canceled propagating wave amplitude whereas the trailing edge flaps amplified these waves. This suggests that the most effective implementation might involve determining the flap motion required for a least squares minimization of both propagating acoustic waves, in contrast to a cancellation of one of these waves. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP MINTER, JA (reprint author), PURDUE UNIV,W LAFAYETTE,IN, USA. NR 12 TC 1 Z9 1 U1 0 U2 0 PU FREUND PUBLISHING HOUSE PI LONDON PA STE 500, CHESHAM HOUSE, 150 REGENT ST, LONDON, ENGLAND W1R 5FA SN 0334-0082 J9 INT J TURBO JET ENG JI Int. J. Turbo. Jet-Engines PY 1994 VL 11 IS 2-3 BP 249 EP 261 PG 13 WC Engineering, Aerospace SC Engineering GA QL323 UT WOS:A1994QL32300011 ER PT B AU CHAU, S AF CHAU, S GP IEEE TI FAULT INJECTION BOUNDARY SCAN DESIGN FOR VERIFICATION OF FAULT TOLERANT SYSTEMS SO INTERNATIONAL TEST CONFERENCE 1994, PROCEEDINGS LA English DT Proceedings Paper CT International Test Conference 1994 (ITC 94) - TEST; The Next 25-Years CY OCT 02-06, 1994 CL WASHINGTON, DC SP IEEE, COMP SOC, TEST TECHNOL TECH COMM, IEEE, PHILADELPHIA SECT C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 8 Z9 8 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2103-0 PY 1994 BP 677 EP 682 DI 10.1109/TEST.1994.528013 PG 6 WC Engineering, Manufacturing; Engineering, Electrical & Electronic SC Engineering GA BC12N UT WOS:A1994BC12N00087 ER PT S AU BILITZA, D AF BILITZA, D BE Bilitza, D Rawer, K Grun, E TI TOPSIDE MODELS - STATUS AND FUTURE IMPROVEMENTS SO IONOSPHERIC MODELS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Topical Meeting of the COSPAR Interdisciplinary Scientific Commission C (Meeting C6) and Symposium B4 of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION RADIO SCI, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON ID LATITUDE IONOSPHERIC MODEL; DENSITY AB This paper reviews the data base and empirical models that are available for the global representation of electron density in the topside ionosphere. Topside sounder and incoherent scatter measurements are the prime data sources. We assess their data volume and compatibility. Several empirical models are discussed (IRI, Bent, SLIM, and FAIM) and their specific characteristics and differences are pointed out. Global and temporal trends as predicted by these different models are compared and contrasted with measured results. Most models use vertical height rather than a field-aligned height coordinate, although it is well known that topside electrons are confined to moving along magnetic field lines. We examine several magnetic coordinate systems and evaluate their merits for empirical modelling. RP BILITZA, D (reprint author), NASA,GODDARD SPACE FLIGHT CTR,NATL SPACE SCI DATA CTR,HSTX,CODE 633,GREENBELT,MD 20771, USA. NR 28 TC 9 Z9 9 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042489-9 J9 ADV SPACE RES PY 1994 VL 14 IS 12 BP 17 EP 26 DI 10.1016/0273-1177(94)90232-1 PG 10 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BB08W UT WOS:A1994BB08W00002 ER PT S AU HOEGY, WR GREBOWSKY, JM AF HOEGY, WR GREBOWSKY, JM BE Bilitza, D Rawer, K Grun, E TI COMPARISON OF ION COMPOSITION FROM THE GODDARD COMPREHENSIVE IONOSPHERE DATABASE WITH THE INTERNATIONAL REFERENCE IONOSPHERE MODEL SO IONOSPHERIC MODELS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Topical Meeting of the COSPAR Interdisciplinary Scientific Commission C (Meeting C6) and Symposium B4 of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION RADIO SCI, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON ID DENSITY AB We compared the IRI values of Te, Ne, Ti, O+, H+, He+, O-2(+), and NO+ with AE-C values, obtained from the Goddard Comprehensive Ionosphere Database (GCID), composed of data from the satellites, AE-B, OGO-6, ISIS-2, AE-C, AE-D, and AE-E. O+ - H+ transition levels were derived from the IRI and AE-C altitude profiles. Some discrepancies were found between IRI and the AE-C data. The IRI electron density was found to be about a factor of 2 higher than the data. The H+ composition agreed best among the IRI ions, with an average AE-C/IRI ratio of 1.05. The temperatures of both electrons and ions agreed quite well: the average ratios of AE-C/IRI was found to be .99 for electrons and 1.17 for ions. RP HOEGY, WR (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771, USA. RI Grebowsky, Joseph/I-7185-2013 NR 10 TC 4 Z9 4 U1 0 U2 2 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042489-9 J9 ADV SPACE RES PY 1994 VL 14 IS 12 BP 121 EP 124 DI 10.1016/0273-1177(94)90252-6 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BB08W UT WOS:A1994BB08W00022 ER PT S AU ATZEI, A HECHLER, M SCHWEHM, G MITCHELL, R AF ATZEI, A HECHLER, M SCHWEHM, G MITCHELL, R BE Bilitza, D Rawer, K Grun, E TI CHALLENGES OF THE ROSETTA SAMPLE RETURN MISSION SO IONOSPHERIC MODELS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Topical Meeting of the COSPAR Interdisciplinary Scientific Commission C (Meeting C6) and Symposium B4 of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION RADIO SCI, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON AB Rosetta is a cornerstone mission of the science programme of the European Space Agency (ESA) and it has been studied as a collaborative project with NASA. The major scientific objectives of Rosetta is to return cometary samples fo Earth. About 20 kg of cometary material from up to 3 m below the surface would be made available to the scientific community for analysis. Since relatively little is known a priory about the environment to be expected, the mission design must be based on a limited body of knowledge and rely on autonomy. The paper outlines the main mission characteristics and the experimental approach to demonstrate the mission feasibility. C1 EUROPEAN SPACE AGCY,EUROPEAN SPACE OPERAT CTR,DARMSTADT,GERMANY. JET PROPULS LAB,PASADENA,CA. RP ATZEI, A (reprint author), EUROPEAN SPACE AGCY,EUROPEAN SPACE RES & TECHNOL CTR,2200 AG NOORDWIJK,NETHERLANDS. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042489-9 J9 ADV SPACE RES PY 1994 VL 14 IS 12 BP 197 EP 205 DI 10.1016/0273-1177(94)90270-4 PG 9 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BB08W UT WOS:A1994BB08W00030 ER PT B AU BEJCZY, AK FIORINI, P KIM, WS SCHENKER, P AF BEJCZY, AK FIORINI, P KIM, WS SCHENKER, P GP IEEE TI TOWARD INTEGRATED OPERATOR INTERFACE FOR ADVANCED TELEOPERATION UNDER TIME-DELAY SO IROS '94 - INTELLIGENT ROBOTS AND SYSTEMS: ADVANCED ROBOTIC SYSTEMS AND THE REAL WORLD, VOLS 1-3 LA English DT Proceedings Paper CT IEEE/RSJ/GI International Conference on Intelligent Robots and Systems - Advanced Robotic Systems and the Real World CY SEP 12-16, 1994 CL FED ARMED FORCES UNIV MUNICH, MUNICH, GERMANY SP Gesell Informat, IEEE, Ind Electr Soc, New Technol Fdn, IEEE, Robot & Automat Soc, Robot Soc Japan, Soc Instrumentat & Control Engineers, Univ Bundeswehr Munchen, Inst Tech Intelligenter Syst, VDE VDI Gesell Mikroelektr, VDI BDE Gesell Messtechnik & Automatisierungstechnik HO FED ARMED FORCES UNIV MUNICH C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-1933-8 PY 1994 BP 563 EP 570 PG 8 WC Automation & Control Systems; Computer Science, Artificial Intelligence SC Automation & Control Systems; Computer Science GA BC39W UT WOS:A1994BC39W00074 ER PT B AU LEE, S JEONG, K AF LEE, S JEONG, K GP IEEE TI DESIGN OF ROBUST TIME DELAYED TELEOPERATOR CONTROL SYSTEM SO IROS '94 - INTELLIGENT ROBOTS AND SYSTEMS: ADVANCED ROBOTIC SYSTEMS AND THE REAL WORLD, VOLS 1-3 LA English DT Proceedings Paper CT IEEE/RSJ/GI International Conference on Intelligent Robots and Systems - Advanced Robotic Systems and the Real World CY SEP 12-16, 1994 CL FED ARMED FORCES UNIV MUNICH, MUNICH, GERMANY SP Gesell Informat, IEEE, Ind Electr Soc, New Technol Fdn, IEEE, Robot & Automat Soc, Robot Soc Japan, Soc Instrumentat & Control Engineers, Univ Bundeswehr Munchen, Inst Tech Intelligenter Syst, VDE VDI Gesell Mikroelektr, VDI BDE Gesell Messtechnik & Automatisierungstechnik HO FED ARMED FORCES UNIV MUNICH C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-1933-8 PY 1994 BP 1413 EP 1420 PG 8 WC Automation & Control Systems; Computer Science, Artificial Intelligence SC Automation & Control Systems; Computer Science GA BC39W UT WOS:A1994BC39W00184 ER PT J AU GUILD, LS HLAVKA, CA CHATFIELD, RB BRASS, JA SETZER, A PEREIRA, JAR RIGGAN, PJ AF GUILD, LS HLAVKA, CA CHATFIELD, RB BRASS, JA SETZER, A PEREIRA, JAR RIGGAN, PJ GP INT SOC PHOTOGRAMMETRY & REMOTE SENSING TI Biomass burning emissions in the Cerrado of Brazil computed with remote sensing data and gis SO ISPRS COMMISSION VII SYMPOSIUM - RESOURCE AND ENVIRONMENTAL MONITORING, PROCEEDINGS, VOL 30, PTS 7A & 7B LA English DT Proceedings Paper CT ISPRS Commission VII Symposium on Resource and Environmental Monitoring CY SEP 26-30, 1994 CL RIO JANEIRO, BRAZIL SP Int Soc Photogrammetry & Remote Sensing, Int Arch Photogrammetry & Remote Sensing DE CERRADO; AGRICULTURE ACTIVITIES; ABOVEGROUND BIOMASS; BIOMASS BURNING; EMISSIONS; REMOTE SENSING; GEOGRAPHIC INFORMATION SYSTEM C1 NASA,AMES RES CTR,AMES,IA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INSTITUTO NACIONAL PESQUISAS ESPACIAIS PI S JOSE CAMPOS PA COORDINATION INST RELATIONS CAIXA POSTAL 515, 12201-970 S JOSE CAMPOS, BRAZIL PY 1994 BP B188 EP B195 PG 8 WC Agronomy; Environmental Sciences; Geography; Meteorology & Atmospheric Sciences; Remote Sensing SC Agriculture; Environmental Sciences & Ecology; Geography; Meteorology & Atmospheric Sciences; Remote Sensing GA BD88T UT WOS:A1994BD88T00110 ER PT B AU TUCKER, CJ NEWCOMB, WW DREGNE, HE AF TUCKER, CJ NEWCOMB, WW DREGNE, HE GP INT SOC PHOTOGRAMMETRY & REMOTE SENSING TI Desertification on the south side of the Sahara: Did the desert expand from 1980 to 1993 SO ISPRS COMMISSION VII SYMPOSIUM - RESOURCE AND ENVIRONMENTAL MONITORING, PROCEEDINGS, VOL 30, PTS 7A & 7B LA English DT Proceedings Paper CT ISPRS Commission VII Symposium on Resource and Environmental Monitoring CY SEP 26-30, 1994 CL RIO JANEIRO, BRAZIL SP Int Soc Photogrammetry & Remote Sensing, Int Arch Photogrammetry & Remote Sensing C1 NASA,GODDARD SPACE FLIGHT CTR,TERR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 1 U2 2 PU INSTITUTO NACIONAL PESQUISAS ESPACIAIS PI S JOSE CAMPOS PA COORDINATION INST RELATIONS CAIXA POSTAL 515, 12201-970 S JOSE CAMPOS, BRAZIL PY 1994 BP B164 EP B172 PG 9 WC Agronomy; Environmental Sciences; Geography; Meteorology & Atmospheric Sciences; Remote Sensing SC Agriculture; Environmental Sciences & Ecology; Geography; Meteorology & Atmospheric Sciences; Remote Sensing GA BD88T UT WOS:A1994BD88T00107 ER PT J AU THOMPSON, AM AF THOMPSON, AM TI ASPECTS OF MODELING THE TROPOSPHERIC HYDROXYL RADICAL CONCENTRATION SO ISRAEL JOURNAL OF CHEMISTRY LA English DT Article ID OBSERVATORY PHOTOCHEMISTRY EXPERIMENT; OZONE PRODUCTION; ATMOSPHERIC METHANE; OH; CHEMISTRY; INSTRUMENTATION; DISTRIBUTIONS; CONSTITUENTS; EMISSIONS; RADIATION AB The global abundance of the hydroxyl radical, OH, is a principal determinant of the amount of acid deposition and the lifetime of literally hundreds of atmospheric trace gases. Local (''in situ'' or point) measurements of OH have been made in a number of environments, and technical challenges in this area are being met over time. Typical concentrations near the surface range from (0.5 to 10) x 10(6) molecules cm(-3). These measurements test photochemical theory. Discrepancies between models and measurements are sometimes larger than the apparent uncertainty in either one. There is no way to measure tropospheric OH directly on a global scale. Instead, measurement of species that react with OH are used with models to derive an estimate for the global burden. Through this route it appears that global OH has not significantly increased or decreased over the past decade. The complexities of OH interaction with O-3, carbon monoxide, methane, nitrogen oxides, and nonmethane hydrocarbons and uncertainties in models make it difficult to interpret or predict global OH behavior. RP THOMPSON, AM (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB,GREENBELT,MD 20771, USA. RI Thompson, Anne /C-3649-2014 OI Thompson, Anne /0000-0002-7829-0920 NR 85 TC 7 Z9 7 U1 0 U2 2 PU LASER PAGES PUBL LTD PI JERUSALEM PA PO BOX 50257, JERUSALEM 91502, ISRAEL SN 0021-2148 J9 ISRAEL J CHEM JI Isr. J. Chem. PY 1994 VL 34 IS 3-4 BP 277 EP 288 PG 12 WC Chemistry, Multidisciplinary SC Chemistry GA QF903 UT WOS:A1994QF90300002 ER PT J AU GUNAPALA, SD LIU, JK LIN, TL PARK, JS AF GUNAPALA, SD LIU, JK LIN, TL PARK, JS TI VERY LONG-WAVELENGTH INTERSUBBAND INFRARED HOT-ELECTRON TRANSISTOR SO JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS LA English DT Article; Proceedings Paper CT 1993 International Conference on Solid State Devices and Materials (SSDM 93) CY AUG 29-SEP 01, 1993 CL MAKUHARI MESSE, JAPAN SP JAPAN SOC APPL PHYS DE QUANTUM WELL; HOT ELECTRON; INTERSUBBAND; INFRARED DETECTORS AND LONG WAVELENGTH ID 8.2 MU-M; PHOTODETECTORS; ABSORPTION; DETECTORS; PERFORMANCE AB We have demonstrated the first very long wavelength (16 mu m) infrared hot electron transistor (IHET). This device utilizes a bound to continuum GaAs/Al-x Ga-1-(x) As (x=0.11) quantum well infrared photodetector (QWIP) as a photosensitive emitter, a wide quantum well as a base, and a thick AlxGa1-xAs (x=0.11) barrier between the base and the collector as an energy discriminating filter. This energy filter blocks the lower energy tunneled electrons, which drain through the base while higher energy photo electrons pass to the collector. Therefore, the detectivity of the device at the collector is much higher than the detectivity at the emitter. RP GUNAPALA, SD (reprint author), CALTECH,JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91091, USA. NR 24 TC 0 Z9 0 U1 0 U2 0 PU JAPAN J APPLIED PHYSICS PI MINATO-KU TOKYO PA DAINI TOYOKAIJI BLDG 24-8 SHINBASHI 4-CHOME, MINATO-KU TOKYO 105, JAPAN SN 0021-4922 J9 JPN J APPL PHYS 1 JI Jpn. J. Appl. Phys. Part 1 - Regul. Pap. Short Notes Rev. Pap. PD JAN PY 1994 VL 33 IS 1B BP 869 EP 872 DI 10.1143/JJAP.33.869 PG 4 WC Physics, Applied SC Physics GA MV678 UT WOS:A1994MV67800105 ER PT J AU STCLAIR, TL PROGAR, DJ AF STCLAIR, TL PROGAR, DJ TI ADHESIVE EVALUATION FOR NEW FORMS OF LARC(TM)-TPI SO JOURNAL OF ADHESION LA English DT Article; Proceedings Paper CT International Symposium on the Interphase, at the 16th Annual Meeting of the Adhesion-Society-Incorporated CY FEB 21-26, 1993 CL WILLIAMSBURG, VA SP ADHES SOC INC DE POLYIMIDE ADHESIVES; LINEAR AROMATIC POLYIMIDES; HIGH TEMPERATURE ADHESIVES; HOT-MELT ADHESIVE; LARC(TM)-TPI POLYIMIDE; PROCESSING; FLOW PROPERTIES AB LARC(TM)-TPI is a linear aromatic polyimide that was developed at NASA Langley Research Center in the 1970's and subsequently licensed to Mitsui Toatsu Chemicals, Inc., (MTC) in Japan. This company has made it easier to process for use in application as a structural adhesive or as a composite matrix resin. The present forms that exist are (1) high melt viscosity or Low Flow Grade (LFG); (2) medium melt viscosity or Medium Flow Grade (MFG); and (3) low melt viscosity or High Flow Grade (HFG). As expected, the low melt viscosity material is the easiest to process but has poor toughness; the high melt viscosity material is very tough but is more difficult to process. Because of these two extreme situations we have worked closely with MTC to develop an optimized system. This work has resulted in the medium melt viscosity material as well as two other modified or blended medium-flow variations. These novel forms of LARC(TM)-TPI have resulted in adhesives that can be melt processed at pressures as low as 0.01 MPa (15 psi) at temperatures between 343-371 degrees C (650-700 degrees F). Evaluation of adhesive performance has been accomplished using lap shear specimens and evaluating flow, wet out and shear strength. Initial strengths for these optimized materials range from 20.7-41.4 MPa (3000-6000 psi) at room temperature and 13.8-20.7 MPa (2000-3000 psi) at elevated test temperatures. RP STCLAIR, TL (reprint author), NASA,LANGLEY RES CTR,POLYMER MAT BRANCH,HAMPTON,VA 23681, USA. NR 6 TC 4 Z9 4 U1 0 U2 0 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0021-8464 J9 J ADHESION JI J. Adhes. PY 1994 VL 47 IS 1-3 BP 67 EP 82 PG 16 WC Engineering, Chemical; Materials Science, Multidisciplinary; Mechanics SC Engineering; Materials Science; Mechanics GA QU373 UT WOS:A1994QU37300006 ER PT J AU DILLARD, DA HINKLEY, JA JOHNSON, WS CLAIR, TLS AF DILLARD, DA HINKLEY, JA JOHNSON, WS CLAIR, TLS TI SPIRAL TUNNELING CRACKS INDUCED BY ENVIRONMENTAL-STRESS CRACKING IN LARC(TM)-TPI ADHESIVES SO JOURNAL OF ADHESION LA English DT Article DE SPIRAL CRACKS; ADHESIVES; COATINGS; LARC-TPI; POLYIMIDE; ENVIRONMENTAL STRESS CRACKING; RESIDUAL STRESSES; TUNNEL CRACKS ID FRACTURE AB Some currently-available formulations of LaRC(TM)-TPI, a thermoplastic polyimide originally developed at NASA-Langley, were found to be highly susceptible to environmental stress cracking when exposed to solvents such as acetone, toluene, diglyme and methyl ethyl ketone. The combination of stress and solvent led to rapid cracking in films and adhesive layers of this material system. Residual cool-down stresses induced when the LaRC-TPI is used as an adhesive or coating led, in the presence of a solvent, to dense ''mud crack'' patterns which relieve a portion of the stored energy. Because these through-the-thickness cracks are not able to relieve the stored energy in the vicinity of the adherends, additional fractures in the form of curious spiral tunnel cracks initiated and grew inward within each adhesive fragment. Micrographs of the spiral fractures are given, along with a qualitative explanation for the failure process as observed in adhesives and coatings. C1 NASA,DIV MAT,HAMPTON,VA 23686. RP DILLARD, DA (reprint author), VIRGINIA POLYTECH INST & STATE UNIV,DEPT ENGN SCI & MECH,BLACKSBURG,VA 24061, USA. RI Dillard, David/C-3185-2012 OI Dillard, David/0000-0002-2903-9318 NR 22 TC 10 Z9 10 U1 0 U2 10 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0021-8464 J9 J ADHESION JI J. Adhes. PY 1994 VL 44 IS 1-2 BP 51 EP 67 DI 10.1080/00218469408026616 PG 17 WC Engineering, Chemical; Materials Science, Multidisciplinary; Mechanics SC Engineering; Materials Science; Mechanics GA QH687 UT WOS:A1994QH68700004 ER PT J AU PROGAR, DJ STCLAIR, TL AF PROGAR, DJ STCLAIR, TL TI ADHESIVE BONDING STUDY OF AMORPHOUS LARC(TM)-TPI SO JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY LA English DT Article DE LARC(TM)-TPI; POLYIMIDE; ADHESIVE; THERMOPLASTIC AB A novel form of LARC(TM)-TPI has been developed which does not exhibit a crystalline melt as was encountered in earlier forms of this material. Being amorphous allows (he powder to be consolidated at temperatures near its glass transition temperature of 260 degrees C (500 degrees F). Adhesively bonded titanium lap shear specimens were fabricated at temperatures as low as 260 degrees C (500 degrees F). At lower temperatures, the pressures needed to create a well-consolidated bond were high, but as the bonding temperature was increased, the pressure could be decreased. High quality, high strength bonds were prepared at a temperature as low as 280 degrees C (536 degrees F) with a pressure of only 0.69 MPa (100 psi). At a 350 degrees C (662 degrees F) bonding temperature, only 0.10 MPa (15 psi) was needed to develop very high lap shear strengths. RP PROGAR, DJ (reprint author), NASA,LANGLEY RES CTR,POLYMER MAT BRANCH,HAMPTON,VA 23681, USA. NR 6 TC 8 Z9 10 U1 0 U2 1 PU VSP BV PI ZEIST PA PO BOX 346, 3700 AH ZEIST, NETHERLANDS SN 0169-4243 J9 J ADHES SCI TECHNOL JI J. Adhes. Sci. Technol. PY 1994 VL 8 IS 1 BP 67 EP 83 DI 10.1163/156856194X00069 PG 17 WC Engineering, Chemical; Materials Science, Multidisciplinary; Mechanics SC Engineering; Materials Science; Mechanics GA MT641 UT WOS:A1994MT64100006 ER PT J AU RICCITIELLO, S MARSHALL, MK AF RICCITIELLO, S MARSHALL, MK TI 3-D CERAMIC-MATRIX COMPOSITE DEVELOPMENT SO JOURNAL OF ADVANCED MATERIALS LA English DT Article AB 3-D silicon carbide ceramic matrix composites were developed using the polymer precursor infiltration process. Process optimization for the fiber preform used in this study produced composites that had mechanical properties equivalent or superior to comparable carbon/carbon composites. The optimized processing conditions were such that, even though superior mechanical properties were achieved the aeroconvective performance was inferior to continuous fiber silicon carbide ceramic matrix composites fabricated via the Chemical Vapor Infiltration/Deposition (CVI/ CVD) process. The process limitations were established by the specific fibers used in the preforms. These fibers, Nextel(R) and Nicalon(R) show degradation above 1,200 degrees C and therefore limited the temperature set in the study. C1 TEXTRON CORP,DAVIDSON TECHNOL CTR,DOVER,NH. RP RICCITIELLO, S (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 8 TC 8 Z9 8 U1 0 U2 0 PU SAMPE PUBLISHERS PI COVINA PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 SN 1070-9789 J9 J ADV MATER JI J. Adv. Mater. PD JAN PY 1994 VL 25 IS 2 BP 22 EP 28 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA MW922 UT WOS:A1994MW92200003 ER PT J AU CAI, Z MUTHARASAN, R KO, FK STEINETZ, BM AF CAI, Z MUTHARASAN, R KO, FK STEINETZ, BM TI DEVELOPMENT OF BRAIDED FIBER ENGINE SEALS SO JOURNAL OF ADVANCED MATERIALS LA English DT Article AB A new type of braided fiber seal has been developed for high temperature engine applications. Development work performed in this study includes seal design, fabrication, leakage flow testing, and flow resistance modeling. The new type of seat utilizes the high flow resistance of tightly packed fibers, and the conformability of textile structures. The seal contains a core part with aligned fibers, and a sheath with braided fiber layers. Seal samples are made by using the conventional braiding process. Leakage flow measurements are then performed. Mass flow rate versus the simulated engine pressure and preload pressure is recorded. The flow resistance of the seal is analyzed using the Ergun equation for flow through porous media, including both viscous and inertial effects. The two constants in Ergun equation are evaluated for the seal structures. Leakage flow of the seal under the test condition is found to be in the transition flow region. The analysis is used to predict the leakage flow performance of the seal with the determined design parameters. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP CAI, Z (reprint author), DREXEL UNIV,PHILADELPHIA,PA 19104, USA. RI Mutharasan, Raj/H-2676-2013 OI Mutharasan, Raj/0000-0002-3734-5438 NR 15 TC 1 Z9 1 U1 0 U2 0 PU SAMPE PUBLISHERS PI COVINA PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 SN 1070-9789 J9 J ADV MATER JI J. Adv. Mater. PD JAN PY 1994 VL 25 IS 2 BP 29 EP 35 PG 7 WC Materials Science, Multidisciplinary SC Materials Science GA MW922 UT WOS:A1994MW92200004 ER PT J AU DICKINSON, LC DEATON, JW AF DICKINSON, LC DEATON, JW TI MECHANICAL CHARACTERIZATION OF TOW PLACED THERMOPLASTIC COMPOSITE FLAT PANELS SO JOURNAL OF ADVANCED MATERIALS LA English DT Article AB AS4/PEEK towpreg and IM7/Radel 8320 slit tape were used to make flat panels by automated tow placement. Specimens were tested in notched and un-notched tension, notched and unnotched compression and compression after impact (CAI) at room temperature and under hot/wet conditions. Mode I fracture toughness, G(ic), was also measured using a double cantilever beam (DCB) test at room temperature. The properties were compared with AS4/ PEEK tape laminate properties reported in the literature. The tow placed AS4/PEEK material was stronger in tension but weaker in compression than the AS4/PEEK tape laminates. The tow placed AS4/PEEK was stronger but less stiff than the tow placed IM7/Radel 8320 in all compression tests. The IM7/Radel performed better in all other mechanical tests. The IM7/Radel also out- out-performed the AS4/ PEEK in all CAI tests. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. RP DICKINSON, LC (reprint author), LOCKHEED ENGN & SCI CO,HAMPTON,VA, USA. NR 14 TC 0 Z9 0 U1 0 U2 3 PU SAMPE PUBLISHERS PI COVINA PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 SN 1070-9789 J9 J ADV MATER JI J. Adv. Mater. PD JAN PY 1994 VL 25 IS 2 BP 36 EP 45 PG 10 WC Materials Science, Multidisciplinary SC Materials Science GA MW922 UT WOS:A1994MW92200005 ER PT J AU MANN, MJ CARLSON, HW AF MANN, MJ CARLSON, HW TI AERODYNAMIC DESIGN OF SUPERSONIC CRUISE WINGS WITH A CALIBRATED LINEARIZED THEORY SO JOURNAL OF AIRCRAFT LA English DT Article AB The design of supersonic cruise wings for minimum drag due to lift is examined in this study. The aerodgnamic design method is based on a supersonic linearized theory modified to include corrections for attainable leading-edge thrust and vortex forces. A semiempirical design and estimation method has been developed to account for the deficiencies of the linearized theory which tends to overestimate the required amount of twist and camber and predicts an unattainable level of performance. Comparisons of theoretical and experimental results showed that the semiempirical method provides for the selection of the amount of twist and camber required for maximum performance at cruise and gives a good estimate of the level of performance. RP MANN, MJ (reprint author), NASA,LANGLEY RES CTR,DIV ADV VEHICLES,VEHICLE INTEGRAT BRANCH,MS 412,HAMPTON,VA 23665, USA. NR 0 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 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1994 VL 31 IS 1 BP 35 EP 41 DI 10.2514/3.46452 PG 7 WC Engineering, Aerospace SC Engineering GA MU650 UT WOS:A1994MU65000006 ER PT J AU MADSON, MD AF MADSON, MD TI SONIC-BOOM PREDICTIONS USING A SOLUTION-ADAPTIVE PULL-POTENTIAL CODE SO JOURNAL OF AIRCRAFT LA English DT Article AB The TranAir full-potential code, which utilizes a solution-adaptive, unstructured Cartesian grid, was used to compute near-field pressure signatures of three generic geometries: 1) a cone-cylinder, 2) a low aspect ratio rectangular wing, and 3) a delta-wing/body. Pressure signatures computed by TranAir are extrapolated to near-and midfield distances using a quasilinear extrapolation technique. Results are compared with wind-tunnel data and, where possible, with extrapolated wind-tunnel data and Whitham-method results. In general, extrapolated TranAir data is in good agreement with experimental and Whitham-method pressure signatures, but peak pressures are slightly underpredicted. It is felt that data computed too close to the model caused some of the discrepancies. Flowfield grid structure was also found to be an important issue in obtaining accurate off-body data. Results were encouraging enough to proceed with the application of TranAir to conceptual configurations in support of the NASA high speed research program (HSRP). RP MADSON, MD (reprint author), NASA,AMES RES CTR,DIV AERODYNAM,ADV AERODYNAM CONCEPTS BRANCH,MOFFETT FIELD,CA 94035, USA. NR 0 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 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1994 VL 31 IS 1 BP 57 EP 63 DI 10.2514/3.46455 PG 7 WC Engineering, Aerospace SC Engineering GA MU650 UT WOS:A1994MU65000009 ER PT J AU TU, EL AF TU, EL TI EFFECT OF CANARD DEFLECTION ON CLOSE-COUPLED CANARD-WING-BODY AERODYNAMICS SO JOURNAL OF AIRCRAFT LA English DT Article AB The thin-layer Navier-Stokes equations are solved for the flow about a canard-wing-body configuration at transonic Mach numbers of 0.85 and 0.90, angles of attack from -4 to 10 deg, and canard deflection angles from -10 to +10 deg. Effects of canard deflection on aerodynamic performance, including canard-wing vortex interaction, are investigated. Comparisons with experimental measurements of surface pressures, lift, drag, and pitching moments are made to verify the accuracy of the computations. The results of the study show that the deflected canard downwash not only influences the formation of the wing leading-edge vortex, but can cause the formation of an unfavorable vortex on the wing lower surface as well. RP TU, EL (reprint author), NASA,AMES RES CTR,COMPUTAT AEROSCI BRANCH,M-S 258-1,MOFFETT FIELD,CA 94035, USA. NR 0 TC 7 Z9 7 U1 0 U2 1 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 1994 VL 31 IS 1 BP 138 EP 145 DI 10.2514/3.46466 PG 8 WC Engineering, Aerospace SC Engineering GA MU650 UT WOS:A1994MU65000020 ER PT J AU ROSSOW, VJ AF ROSSOW, VJ TI AERODYNAMICS OF AIRFOILS WITH VORTEX TRAPPED BY 2 SPANWISE FENCES SO JOURNAL OF AIRCRAFT LA English DT Article AB The research described here is part of a general effort to find simple ways by which wings of aircraft can be converted from an efficient cruise configuration to one that develops the high lift needed during landing and takeoff. The particular high-lift concept studied here consists of a conventional airfoil with a vortex trapped over the upper surface. The vortex is trapped by one or two vertical fences that serve as barriers to the oncoming stream and as reflection planes for the vortex and the sink that form an organized separation bubble on top of the airfoil. In order to illustrate the concept for two-dimensional configurations, computed results are presented for the now over a Clark-Y airfoil for a variety of fence geometries and angles of attack to determine the aerodynamic characteristics of these trapped-vortex, high-lift devices. Even though the results presented here are for two-dimensional inviscid and incompressible now, the results provide a beginning data base for the characteristics of trapped-vortex airfoils for possible application as high-lift devices on swept-wing aircraft. RP ROSSOW, VJ (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 0 TC 12 Z9 12 U1 2 U2 5 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 1994 VL 31 IS 1 BP 146 EP 153 DI 10.2514/3.46467 PG 8 WC Engineering, Aerospace SC Engineering GA MU650 UT WOS:A1994MU65000021 ER PT J AU SCOTT, RC WEISSHAAR, TA AF SCOTT, RC WEISSHAAR, TA TI PANEL FLUTTER SUPPRESSION USING ADAPTIVE MATERIAL ACTUATORS SO JOURNAL OF AIRCRAFT LA English DT Article AB Piezoelectrics and shape memory alloys may be used as integrated actuators to control supersonic nutter of flat panels because panel strain and stiffness can be actively controlled. This article uses a Rayleigh-Ritz panel nutter model to analyze the effectiveness of integrated segmented actuators to control panel bending deformation and in-plane forces, and increase the nutter speed of the panels. A nondimensional parameter for actuator effectiveness is presented to help evaluate the effectiveness of different materials and their placement in the panel. These studies suggest that creating and controlling in-plane panel forces will provide the most effective control of panel nutter. In addition, tradeoffs between actuator stiffness and electromechanical properties are illustrated. RP SCOTT, RC (reprint author), NASA,LANGLEY RES CTR,M-S 340,HAMPTON,VA 23681, USA. NR 0 TC 34 Z9 35 U1 0 U2 2 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 1994 VL 31 IS 1 BP 213 EP 222 DI 10.2514/3.46476 PG 10 WC Engineering, Aerospace SC Engineering GA MU650 UT WOS:A1994MU65000030 ER PT J AU FRICKER, DM HOLDEMAN, JD VANKA, SP AF FRICKER, DM HOLDEMAN, JD VANKA, SP TI CALCULATIONS OF HOT GAS INGESTION FOR A STOVL AIRCRAFT MODEL SO JOURNAL OF AIRCRAFT LA English DT Article AB Hot gas ingestion problems for STOVL (short take-off, vertical landing) aircraft are typically approached with empirical methods and experience. In this study, the hot gas environment around a STOVL aircraft was modeled as multiple jets in crossflow with inlet suction. The flowfield was calculated with a Navier-Stokes, Reynolds-averaged, turbulent, three-dimensional CFD code using a multigrid technique. A simple model of a STOVL aircraft with four choked jets at 1000 K was studied at various heights, head wind speeds, and thrust splay angles in a modest parametric study. Scientific visualization of the computed flowfield shows a pair of vortices in front of the inlet. RP FRICKER, DM (reprint author), NASA,LEWIS RES CTR,ARMY RES LAB,VEHICLE PROPULS DIRECTORATE,M-S 5-11,CLEVELAND,OH 44135, 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 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1994 VL 31 IS 1 BP 236 EP 242 DI 10.2514/3.46479 PG 7 WC Engineering, Aerospace SC Engineering GA MU650 UT WOS:A1994MU65000033 ER PT J AU KUMMEROW, C GIGLIO, L AF KUMMEROW, C GIGLIO, L TI A PASSIVE MICROWAVE TECHNIQUE FOR ESTIMATING RAINFALL AND VERTICAL STRUCTURE INFORMATION FROM SPACE .1. ALGORITHM DESCRIPTION SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID RADIATIVE-TRANSFER; PRECIPITATING CLOUD; 183 GHZ; SATELLITE; MODEL; FREQUENCIES; RATES; HYDROMETEORS; SCATTERING; RETRIEVAL AB This paper describes a multichannel physical approach for retrieving rainfall and vertical structure information from satellite-based passive microwave observations. The algorithm makes use of statistical inversion techniques based upon theoretically calculated relations between rainfall rates and brightness temperatures. Potential errors introduced into the theoretical calculations by the unknown vertical distribution of hydrometeors are overcome by explicitly accounting for diverse hydrometeor profiles. This is accomplished by allowing for a number of different vertical distributions in the theoretical brightness temperature calculations and requiring consistency between the observed and calculated brightness temperatures. This paper will focus primarily on the theoretical aspects of the retrieval algorithm, which includes a procedure used to account for inhomogeneities of the rainfall within the satellite field of view as well as a detailed description of the algorithm as it is applied over both ocean and land surfaces. The residual error between observed and calculated brightness temperatures is found to be an important quantity in assessing the uniqueness of the solution. It is further found that the residual error is a meaningful quantity that can be used to derive expected accuracies from this retrieval technique. Examples comparing the retrieved results as well as the detailed analysis of the algorithm performance under various circumstances are the subject of a companion paper. C1 NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB,GREENBELT,MD 20771. SCI SYST & APPL INC,LANHAM,MD. NR 43 TC 167 Z9 172 U1 0 U2 5 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD JAN PY 1994 VL 33 IS 1 BP 3 EP 18 DI 10.1175/1520-0450(1994)033<0003:APMTFE>2.0.CO;2 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA MQ370 UT WOS:A1994MQ37000001 ER PT J AU KUMMEROW, C GIGLIO, L AF KUMMEROW, C GIGLIO, L TI A PASSIVE MICROWAVE TECHNIQUE FOR ESTIMATING RAINFALL AND VERTICAL STRUCTURE INFORMATION FROM SPACE .2. APPLICATIONS TO SSM/I DATA SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID RADIOMETRIC MEASUREMENTS; PROFILES; SMMR AB A multichannel physical approach for retrieving rainfall and its vertical structure from SSM/I observations is examined. While a companion paper was devoted exclusively to the description of the algorithm, its strengths, and its limitations, the main focus of this paper is to report on the results, applicability, and expected accuracies from this algorithm. Some examples are given that compare retrieved results with ground-based radar data from different geographical regions to illustrate the performance and utility of the algorithm under distinct rainfall conditions. More quantitative validation is accomplished using two months of radar data from Darwin, Australia, and the radar network over Japan. Instantaneous comparisons at Darwin indicate that root-mean-square errors for 1.25 degrees areas over water are 0.09 mm h(-1) compared to the mean rainfall value of 0.224 mm h(-1) while the correlation exceeds 0.9. Similar results are obtained over the Japanese validation site with rms errors of 0.615 mm h(-1) compared to the mean of 0.880 mm h(-1) and a correlation of 0.9. Results are less encouraging over land with root-mean-square errors somewhat larger than the mean rain sates and correlations of only 0.71 and 0.62 for Darwin and Japan, respectively. These validation studies are further used in combination with the theoretical treatment of expected accuracies developed in the companion paper to define error estimates on a broader scale than individual radar sites from which the errors may be analyzed. Comparisons with simpler techniques that are based on either emission or scattering measurements are used to illustrate the fact that the current algorithm, while better correlated with the emission methods over water, cannot be reduced to either of these simpler methods. C1 NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB,GREENBELT,MD 20771. SCI SYST & APPL INC,LANHAM,MD. NR 21 TC 62 Z9 63 U1 0 U2 2 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD JAN PY 1994 VL 33 IS 1 BP 19 EP 34 DI 10.1175/1520-0450(1994)033<0019:APMTFE>2.0.CO;2 PG 16 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA MQ370 UT WOS:A1994MQ37000002 ER PT J AU SMITH, GL MANALOSMITH, N AVIS, LM AF SMITH, GL MANALOSMITH, N AVIS, LM TI LIMB-DARKENING MODELS FROM ALONG-TRACK OPERATION OF THE ERBE SCANNING RADIOMETER SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID RADIATION BUDGET; NIMBUS-7 ERB; EARTH AB During January and August 1985, the scanning radiometers of the Earth Radiation Budget Experiment (ERBE) aboard the Earth Radiation Budget Satellite (ERBS) and the NOAA-9 satellite were operated in along-track scanning modes. Along-track scanning permits the study of many measurement problems. It provides the data for developing a limb-darkening model for a single site over a short period of time and also permits the identification of the scene from data taken at small nadir angles. The earth-emitted radiation measured by the scanners has been analyzed to produce limb-darkening models for a variety of scene types. Limb-darkening models relate the radiance in any given direction to the radiant flux. The scene types were computed using measurements within 10 degrees of zenith. The models have values near zenith of 1.02-1.09. The typical zenith values of the model are 1.06 for both day and night for ERBS, and for NOAA-9, 1.06 for day and 1.05 for night. Mean models are formed for the ERBS and NOAA-9 results and are found to differ less than 1%, the ERBS results being the higher. The models vary about 1% with latitude near zenith and agree with earlier models that were used to analyze ERBE data typically to 2%. C1 LOCKHEED ENGN & SCI CO,HAMPTON,VA. RP SMITH, GL (reprint author), NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,MAIL STOP 420,HAMPTON,VA 23665, USA. NR 16 TC 8 Z9 8 U1 0 U2 1 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD JAN PY 1994 VL 33 IS 1 BP 74 EP 84 DI 10.1175/1520-0450(1994)033<0074:LDMFAT>2.0.CO;2 PG 11 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA MQ370 UT WOS:A1994MQ37000007 ER PT J AU BAUM, BA WIELICKI, BA AF BAUM, BA WIELICKI, BA TI CIRRUS CLOUD RETRIEVAL USING INFRARED SOUNDING DATA - MULTILEVEL CLOUD ERRORS SO JOURNAL OF APPLIED METEOROLOGY LA English DT Note ID MODIS; VAS AB In this study we perform an error analysis for cloud-top pressure retrieval using the High-Resolution Infrared Radiometric Sounder (HIRS/2) 15-mu m CO2 channels for the two-layer case of transmissive cirrus overlying an overcast, opaque stratiform cloud. This analysis includes standard deviation and bias error due to instrument noise and the presence of two cloud layers, the lower of which is opaque. Instantaneous cloud pressure retrieval errors are determined for a range of cloud amounts (0.1-1.0) and cloud-top pressures (850-250 mb). Large cloud-top pressure: retrieval errors are found to occur when a lower opaque layer is present underneath an upper transmissive cloud layer in the satellite field of view (FOV). Errors tend to increase with decreasing upper-cloud effective cloud amount and with decreasing cloud height (increasing pressure). Errors in retrieved upper-cloud pressure result in corresponding errors in derived effective cloud amount. For the case in which a HIRS FOV has two distinct cloud layers, the difference between the retrieved and actual cloud-top pressure is positive in all cases, meaning that the retrieved upper-cloud height is lower than the actual upper-cloud height. In addition, errors in retrieved cloud pressure are found to depend upon the lapse rate between the low-level cloud top and the surface. We examined which sounder channel combinations would minimize the total errors in derived cirrus cloud height caused by instrument noise and by the presence of a lower-level cloud. We find that while the sounding channels that peak between 700 and 1000 mb minimize random errors, the sounding channels that peak at 300-500 mb minimize bias errors. For a cloud climatology, the bias errors are most critical. RP BAUM, BA (reprint author), NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,ASD-RSB MS 420,HAMPTON,VA 23665, USA. RI Baum, Bryan/B-7670-2011 OI Baum, Bryan/0000-0002-7193-2767 NR 18 TC 38 Z9 41 U1 0 U2 7 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8763 J9 J APPL METEOROL JI J. Appl. Meteorol. PD JAN PY 1994 VL 33 IS 1 BP 107 EP 117 DI 10.1175/1520-0450(1994)033<0107:CCRUIS>2.0.CO;2 PG 11 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA MQ370 UT WOS:A1994MQ37000010 ER PT J AU MILLER, ES KOEBEL, DA DAVIS, SA KLEIN, JB MCLEISH, KR GOLDWATER, D SONNENFELD, G AF MILLER, ES KOEBEL, DA DAVIS, SA KLEIN, JB MCLEISH, KR GOLDWATER, D SONNENFELD, G TI INFLUENCE OF SUSPENSION ON THE OXIDATIVE BURST BY RAT NEUTROPHILS SO JOURNAL OF APPLIED PHYSIOLOGY LA English DT Article DE IMMUNOLOGY; MICROGRAVITY; NEUROENDOCRINIMMUNOLOGY; SPACEFLIGHT; STRESS ID TUMOR-NECROSIS-FACTOR; SIMULATED WEIGHTLESSNESS; MODULATION AB The influence of spaceflight on the oxidative burst of neutrophils is not known. The present study was designed to evaluate the influence of antiorthostatic suspension, a groundbased modeling system designed to simulate certain aspects of weightlessness that occur after spaceflight, on the capacity of rat neutrophils to express the oxidative burst, an important host defense mechanism against microbial pathogens. Rats were suspended in whole body harnesses in the antiorthostatic orientation for a 3- or 7-day period. Control rats were suspended orthostatically or allowed to remain in vivarium cages without the attachment of any suspension materials. After suspension, peripheral blood was harvested and neutrophils were isolated by density gradient centrifugation. The enriched neutrophil preparations were stimulated with N-formyl-methionyl-leucine-phenylalanine and phorbol myristic acid to induce the oxidative burst. It was found that neutrophils isolated from suspended animals released the same levels of superoxide anion as did vivarium control animals that were not suspended, indicating that whole body suspension did not alter this aspect of rat neutrophil function. C1 UNIV LOUISVILLE, SCH MED, DEPT MED, LOUISVILLE, KY 40292 USA. NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. RP UNIV LOUISVILLE, SCH MED, DEPT MICROBIOL & IMMUNOL, LOUISVILLE, KY 40292 USA. RI Klein, Jon/B-9833-2013; McLeish, Kenneth/B-9819-2013 OI McLeish, Kenneth/0000-0002-7816-3286 NR 19 TC 12 Z9 12 U1 0 U2 0 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 USA SN 8750-7587 EI 1522-1601 J9 J APPL PHYSIOL JI J. Appl. Physiol. PD JAN PY 1994 VL 76 IS 1 BP 387 EP 390 PG 4 WC Physiology; Sport Sciences SC Physiology; Sport Sciences GA MU486 UT WOS:A1994MU48600053 PM 8175533 ER PT J AU DIACONIS, P SHAHSHAHANI, M AF DIACONIS, P SHAHSHAHANI, M TI ON THE EIGENVALUES OF RANDOM MATRICES SO JOURNAL OF APPLIED PROBABILITY LA English DT Article DE HAAR MEASURE; ORTHOGONAL GROUPS; SYMPLECTIC GROUPS; SYMMETRICAL GROUPS ID BRAUER CENTRALIZER ALGEBRAS AB Let M be a random matrix chosen from Haar measure on the unitary group U(n). Let Z = X + iY be a standard complex normal random variable with X and Y independent, mean 0 and variance 1/2 normal variables. We show that for j = 1, 2, ..., Tr(M(j)) are independent and distributed as square-root jZ asymptotically as n --> infinity. This result is used to study the set of eigenvalues of M, Similar results are given for the orthogonal and symplectic and symmetric groups. C1 JET PROP LAB,PASADENA,CA 91109. RP DIACONIS, P (reprint author), HARVARD UNIV,DEPT MATH,CAMBRIDGE,MA 02138, USA. NR 34 TC 136 Z9 137 U1 1 U2 6 PU APPLIED PROBABILITY TRUST PI SHEFFIELD PA THE UNIVERSITY DEPT PROB AND STATISTICS, SHEFFIELD, ENGLAND S3 7RH SN 0021-9002 J9 J APPL PROBAB JI J. Appl. Probab. PY 1994 VL 31A SI SI BP 49 EP 62 DI 10.2307/3214948 PG 14 WC Statistics & Probability SC Mathematics GA NX796 UT WOS:A1994NX79600007 ER PT J AU SHEN, TC PONG, MM AF SHEN, TC PONG, MM TI IN-SITU POLYMERIZED PLOT COLUMNS .3. DIVINYLBENZENE COPOLYMERS AND DIMETHACRYLATE HOMOPOLYMERS SO JOURNAL OF CHROMATOGRAPHIC SCIENCE LA English DT Article RP SHEN, TC (reprint author), NASA,AMES RES CTR,SETI INST,MOFFETT FIELD,CA 94035, USA. NR 17 TC 10 Z9 12 U1 0 U2 0 PU PRESTON PUBLICATIONS INC PI NILES PA 7800 MERRIMAC AVE PO BOX 48312, NILES, IL 60648 SN 0021-9665 J9 J CHROMATOGR SCI JI J. Chromatogr. Sci. PD JAN PY 1994 VL 32 IS 1 BP 36 EP 40 PG 5 WC Biochemical Research Methods; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA MQ711 UT WOS:A1994MQ71100007 PM 11536628 ER PT J AU BAKUCKAS, JG PROSSER, WH JOHNSON, WS AF BAKUCKAS, JG PROSSER, WH JOHNSON, WS TI MONITORING DAMAGE GROWTH IN TITANIUM MATRIX COMPOSITES USING ACOUSTIC-EMISSION SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article AB In this study, an initial application of the acoustic emission (AE) technique to locate and monitor damage growth in a relatively new and advanced titanium matrix composite (TMC) system was investigated. Damage growth was evaluated in SCS-6/Timetal-21S TMC using several optical techniques including a long focal length, high magnification microscope system with image acquisition capabilities. Fracture surface examinations were conducted using a scanning electron microscope (SEM). The AE technique was used to locate damage based on the arrival times of AE events between two sensors. Using model specimens exhibiting a dominant failure mechanism, correlations were established between the observed damage growth mechanisms and the AE results in terms of the events amplitude. The correlation between the damage mechanisms and the AE parameters must be established whenever a new class of material is being evaluated using the AE technique since the AE parameters are highly dependent on the specimen geometry as well as the type of material. These correlations were then used to monitor the damage growth process in laminates exhibiting multiple modes of damage. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. RP BAKUCKAS, JG (reprint author), GALAXY SCI CORP,2500 ENGLISH CREEK AVE,BLDG 11,PLEASANTVILLE,NJ 08232, USA. NR 18 TC 42 Z9 46 U1 0 U2 2 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 1994 VL 28 IS 4 BP 305 EP 328 PG 24 WC Materials Science, Composites SC Materials Science GA NA744 UT WOS:A1994NA74400002 ER PT J AU MOORE, L KLINE, R MADARAS, E RANSONE, P AF MOORE, L KLINE, R MADARAS, E RANSONE, P TI NONDESTRUCTIVE EVALUATION OF CHANGES IN MECHANICAL-PROPERTIES IN CARBON-CARBON COMPOSITES DURING PROCESSING SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article AB In this work, changes in the mechanical properties of carbon-carbon composites during processing are studied using nondestructive characterization techniques. Ultrasonics and radiography are used to measure the local stiffnesses in carbon-carbon panels after each stage in the processing cycle. The degree of material inhomogeneity (as measured by the standard deviation in the local moduli) was monitored throughout the fabrication process. The nondestructively measured stiffnesses were compared with direct mechanical measurements to assess the viability of the technique. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. RP MOORE, L (reprint author), UNIV OKLAHOMA,SCH AEROSP & MECH ENGN,865 ASP AVE,ROOM 212,NORMAN,OK 73019, USA. NR 13 TC 5 Z9 5 U1 0 U2 0 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 1994 VL 28 IS 4 BP 352 EP 366 PG 15 WC Materials Science, Composites SC Materials Science GA NA744 UT WOS:A1994NA74400005 ER PT J AU CARAPELLA, EE HYER, MW GRIFFIN, OH MAAHS, HG AF CARAPELLA, EE HYER, MW GRIFFIN, OH MAAHS, HG TI MICROMECHANICS OF CRENULATED FIBERS SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article AB The stresses at the interface of fully bonded and fully disbonded crenulated carbon fibers in a carbon matrix are presented. Interface stresses for two loading cases, transverse tensile loading and a negative temperature change, are discussed. A crenulated fiber is one which has a wavy or scalloped outer radius, the amplitude and frequency of the waviness resulting from the manufacturing process. A square-packed array of fibers is assumed and the results are obtained using the finite-element method. For comparison to the crenulated fiber, the stresses for similarly loaded bonded and disbonded circular fibers are also presented. The level of disbond in each case is measured by the size of the radial gap between the fiber and the matrix. When fully disbonded, the fiber and matrix are assumed to interact only through frictionless elastic contact. Results from the fully disbonded case show that mechanical interference occurs between the fiber and the matrix. In general, the results of the study show that the stress levels present with the crenulated fiber are significantly higher than for the circular fiber. In particular, large stress concentrations arise in the matrix tangential stress component at high crenulation amplitudes and high crenulation frequencies. Overall, the work described provides new insight into the complex interactions between fiber and matrix, specifically interactions that reflect on the reality of disbond, and innovations regarding fiber architecture. C1 VIRGINIA POLYTECH INST & STATE UNIV,DEPT ENGN SCI & MECH,BLACKSBURG,VA 24061. NASA,LANGLEY RES CTR,APPL MAT BRANCH,HAMPTON,VA 23681. NR 11 TC 4 Z9 4 U1 1 U2 2 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 1994 VL 28 IS 14 BP 1322 EP 1346 PG 25 WC Materials Science, Composites SC Materials Science GA PN620 UT WOS:A1994PN62000003 ER PT J AU HARRIS, CE AF HARRIS, CE TI ASSESSMENT OF PRACTICES IN SUPPORTING COMPOSITE STRUCTURES IN THE CURRENT TRANSPORT FLEET SO JOURNAL OF COMPOSITES TECHNOLOGY & RESEARCH LA English DT Editorial Material RP HARRIS, CE (reprint author), NASA,LANGLEY RES CTR,MECH MAT BRANCH,HAMPTON,VA 23665, USA. NR 2 TC 0 Z9 0 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 1994 VL 16 IS 1 BP 94 EP 95 PG 2 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA MQ386 UT WOS:A1994MQ38600009 ER PT J AU ANDERSON, WK AF ANDERSON, WK TI A GRID GENERATION AND FLOW SOLUTION METHOD FOR THE EULER EQUATIONS ON UNSTRUCTURED GRIDS SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID SCHEMES RP ANDERSON, WK (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23681, USA. NR 31 TC 35 Z9 44 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD JAN PY 1994 VL 110 IS 1 BP 23 EP 38 DI 10.1006/jcph.1994.1003 PG 16 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA MU846 UT WOS:A1994MU84600003 ER PT J AU AJMANI, K NG, WF LIOU, MS AF AJMANI, K NG, WF LIOU, MS TI PRECONDITIONED CONJUGATE-GRADIENT METHODS FOR THE NAVIER-STOKES EQUATIONS SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID NONSYMMETRIC LINEAR-SYSTEMS C1 NASA,LEWIS RES CTR,DIV INTERNAL FLUID MECH,CLEVELAND,OH 44135. RP AJMANI, K (reprint author), VIRGINIA POLYTECH INST & STATE UNIV,DEPT MECH ENGN,BLACKSBURG,VA 24061, USA. RI Ng, Wing/F-2447-2014 NR 34 TC 23 Z9 25 U1 0 U2 2 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD JAN PY 1994 VL 110 IS 1 BP 68 EP 81 DI 10.1006/jcph.1994.1006 PG 14 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA MU846 UT WOS:A1994MU84600006 ER PT J AU KLIMAS, AJ FARRELL, WM AF KLIMAS, AJ FARRELL, WM TI A SPLITTING ALGORITHM FOR VLASOV SIMULATION WITH FILAMENTATION FILTRATION SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID ON-TAIL INSTABILITY; SINGLE-MODE; LONG-TIME; EQUATION; SPACE RP KLIMAS, AJ (reprint author), NASA,GSFC,EXTRATERR PHYS LAB,CODE 690,GREENBELT,MD, USA. RI Farrell, William/I-4865-2013 NR 30 TC 61 Z9 62 U1 0 U2 3 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD JAN PY 1994 VL 110 IS 1 BP 150 EP 163 DI 10.1006/jcph.1994.1011 PG 14 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA MU846 UT WOS:A1994MU84600011 ER PT J AU WU, TK AF WU, TK TI CASSINI FREQUENCY-SELECTIVE SURFACE DEVELOPMENT SO JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS LA English DT Article AB This paper summarizes the design and development of a 4-frequency selective surface (FSS) for the NASA Cassini high gain antenna (HGA). Specifically, two FSS/HGA design approaches were considered for multiplexing the four frequency bands (S-, X-, Ku-, and Ka-band) of the Cassini Project. In the first approach (with two transmit and two reflect bands), a double screen FSS with double ring patch elements was developed to transmit the S- and Ku-band signals and to reflect the X- and Ka-band signals. However, this FSS presents relatively high insertion loss at the S-band. Therefore, the second approach (with one transmit and three reflect bands) was developed, using a single screen FSS with double square loop slot elements to transmit the Ka-band and to reflect the S-, X-, and Ku-band waves. Significant improvement in the S-band loss performance is obtained with this second approach. However, it will require a dual reflector shaping study to optimize the subreflector size for minimizing the spill over and blockage losses. RP WU, TK (reprint author), CALTECH,JET PROP LAB,MS T1703,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 0 TC 7 Z9 8 U1 0 U2 0 PU VSP BV PI ZEIST PA PO BOX 346, 3700 AH ZEIST, NETHERLANDS SN 0920-5071 J9 J ELECTROMAGNET WAVE JI J. Electromagn. Waves Appl. PY 1994 VL 8 IS 12 BP 1547 EP 1561 PG 15 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA QB287 UT WOS:A1994QB28700001 ER PT J AU SHA, YG VOLZ, MP LEHOCZKY, SL AF SHA, YG VOLZ, MP LEHOCZKY, SL TI ELECTRICAL-PROPERTIES AND COMPOSITIONAL DISTRIBUTIONS OF CVT AND PVT GROWN HG1-XCDXTE EPILAYERS SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article DE CHEMICAL VAPOR TRANSPORT (CVT) TECHNIQUE; HGCDTE; PHYSICAL VAPOR TRANSPORT (PVT) TECHNIQUE ID MASS-LOSS MEASUREMENTS; T PHASE-DIAGRAM; VACANCY CONCENTRATION; DOPED HG0.8CD0.2TE; EPITAXIAL LAYERS; DEFECT STRUCTURE; LATTICE-DEFECTS; CDXHG1-XTE; HG0.6CD0.4TE; TEMPERATURE AB Epitaxial layers of Hg1-xCdxTe were grown on CdTe substrates by the chemical vapor transport technique using HgI2, as a transport agent. The epilayers were of nearly uniform composition both laterally and to a depth of about one-half of the layer thickness. By comparison, the composition varied continuously throughout the depth of the layer for epilayers grown by the physical vapor transport technique. Layers were grown both p- and n-type with carrier concentrations on the order of 10(17) cm(-3). Low-temperature annealing was used to convert the p-type layers into n-type. The room-temperature carrier mobilities of as-grown and converted n-type layers ranged from 10(3) to 10(4) cm(2)/V-s depending on the composition and are comparable to previous literature values for undoped Hg1-xCdxTe crystals. C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. NR 20 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 JAN PY 1994 VL 23 IS 1 BP 25 EP 29 DI 10.1007/BF02651263 PG 5 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA MQ551 UT WOS:A1994MQ55100005 ER PT J AU HAMED, A KUMAR, A AF HAMED, A KUMAR, A TI FLOW SEPARATION IN SHOCK-WAVE BOUNDARY-LAYER INTERACTIONS SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 37th International Gas Turbine and Aeroengine Congress and Exposition CY JUN 01-04, 1992 CL COLOGNE, GERMANY ID TURBULENT AB This work presents an assessment of the experimental data on separated flow in shock wave turbulent boundary layer interactions at hypersonic and supersonic speeds. The data base consists of selected configurations where the only characteristic length in the iteration is the incoming boundary la,ver thickness. It consists of two-dimensional and axisymmetric interactions in compression corners or cylinder-flares, and externally generated oblique shock interactions with boundary layers over flat plates or cylindrical surfaces. The conditions leading to flow separation and the empirical correlations for incipient separation are reviewed. The effects of Mach number, Reynolds number, surface cooling, and the methods of detecting separation are discussed. C1 NASA,LANGLEY RES CTR,THEORET FLOW PHYS BRANCH,HAMPTON,VA 23665. RP HAMED, A (reprint author), UNIV CINCINNATI,DEPT AEROSP ENGN & ENGN MECH,CINCINNATI,OH 45221, USA. NR 29 TC 3 Z9 3 U1 0 U2 6 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4795 J9 J ENG GAS TURB POWER JI J. Eng. Gas. Turbines Power-Trans. ASME PD JAN PY 1994 VL 116 IS 1 BP 98 EP 103 DI 10.1115/1.2906816 PG 6 WC Engineering, Mechanical SC Engineering GA MV015 UT WOS:A1994MV01500015 ER PT J AU BLANKSON, IM AF BLANKSON, IM TI AIR-BREATHING HYPERSONIC CRUISE - PROSPECTS FOR MACH 4-7 WAVERIDER AIRCRAFT SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 37th International Gas Turbine and Aeroengine Congress and Exposition CY JUN 01-04, 1992 CL COLOGNE, GERMANY AB There is currently a renewal of world-wide interest in hypersonic flight. Vehicle concepts being considered range from cruise missiles to SSTO and TSTO vehicles. The new characteristics of these vehicles are that they will be powered by air-breathing engines and have long residence times in the air-breathing corridor. In the Mach 4-7 regime, waverider aircraft are being considered as candidates for both long-range and short-range cruise missions, as hypersonic missiles, and as high-L/D highly maneuverable vehicles. This paper will discuss the potential for near-term and far-term application of air-breathing engines to the above-mentioned waverider vehicle concepts and missions. In particular, the cruise mission is discussed in detail and attempts are made to compare and contrast it with the accelerator mission. Past criticisms levied against waveriders alleging low volumetric efficiency, lack of engine/ airframe integration studies, poor off-design performance, poor take-off and landing capability, have been shown by ongoing research to be unfounded. A discussion is presented of some of the technical challenges and ongoing research aimed at realizing such vehicles: from turboramjet and scramjet technology development, propulsion-airframe integration effects on vehicle performance, aerosercothermoelastic systems analysis, hypersonic stability and control with aeroservothermoelastic and propulsion effects, etc. A unique and very strong aspect of hypersonic vehicle design is the integration and interaction of the propulsion system, aerodynamics, aerodynamic heating, stability and control, and materials and structures. This first-order multidisciplinary situation demands the ability fo integrate highly coupled and interacting elements in a fundamental and optimal fashion to achieve the desired performance. Some crucial technology needs are found in propulsion-airframe integration and ifs role in configuration definition, hypersonic boundary-layer transition and its impact on vehicle gross-weight and mission success, scramjet combustor mixing length and its impact on engine weight and, CFD (turbulence modeling, transition modeling, etc) as a principal tool for the design of hypersonic vehicles. Key technology implications in thermal management, structures, materials, and flight control systems will also be briefly discussed. II is concluded that most of the technology requirements in the Mach 4-7 regime are relatively conventional, making cited applications near-term, yet offering very significant advancements in aircraft technology. RP BLANKSON, IM (reprint author), NATL AERONAUT & SPACE ADM,DIV HYPERSON RES,WASHINGTON,DC 20546, USA. NR 32 TC 2 Z9 2 U1 2 U2 8 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4795 J9 J ENG GAS TURB POWER JI J. Eng. Gas. Turbines Power-Trans. ASME PD JAN PY 1994 VL 116 IS 1 BP 104 EP & DI 10.1115/1.2906779 PG 0 WC Engineering, Mechanical SC Engineering GA MV015 UT WOS:A1994MV01500016 ER PT J AU NOEVER, DA MATSOS, HC LOOGER, LL JONES, MM SINGH, PK AF NOEVER, DA MATSOS, HC LOOGER, LL JONES, MM SINGH, PK TI ORGANIC CHELATION OF CADMIUM USING DI-PDMS - A BIOCONVECTIVE TEST FOR PROTECTIVE EFFECTS SO JOURNAL OF ENVIRONMENTAL SCIENCE AND HEALTH PART A-ENVIRONMENTAL SCIENCE AND ENGINEERING & TOXIC AND HAZARDOUS SUBSTANCE CONTROL LA English DT Article DE CADMIUM; BIOASSAY; TETRAHYMENA PYRIFORMIS; CHELATION ID TETRAHYMENA-THERMOPHILA; AGENTS; PYRIFORMIS; TOXICITY; BIOASSAY; PATTERNS; CELLS; ALGA AB Cadmium is a major industrial effluent and the cause of itai-itai disease. As a biological detector for cadmium toxicity, an assay using the motile response of the protozoa species, Tetrahymena pyriformis, has been described. The assay relies on macroscopic bioconvective patterns to score the toxic response, giving a sensitivity better than 1 mu M and a toxicity threshold to 5 mu M for Cd+2. Using pattern formation as the toxicity monitor, the organic chelating agent Di-PDMS is investigated individually for toxic effects at low dosages (without cadmium) and for poison protection directly (with cadmium). Dosages of 0.1-0.5 mu M Di-PDMS show protective chelation of cadmium and enhance pattern formation capabilities for 1 mu M Cd+2. C1 VANDERBILT UNIV,DEPT CHEM,NASHVILLE,TN 37235. VANDERBILT UNIV,CTR MOLEC TOXICOL,NASHVILLE,TN 37235. RP NOEVER, DA (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,BIOPHYS BRANCH,ES-76,HUNTSVILLE,AL 35812, USA. NR 15 TC 1 Z9 1 U1 1 U2 1 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 1077-1204 J9 J ENVIRON SCI HEAL A JI J. Environ. Sci. Health Part A-Environ. Sci. Eng. Toxic Hazard. Subst. Control PY 1994 VL 29 IS 7 BP 1283 EP 1293 PG 11 WC Engineering, Environmental; Environmental Sciences SC Engineering; Environmental Sciences & Ecology GA NZ162 UT WOS:A1994NZ16200002 ER PT J AU EKATERINARIS, JA CRICELLI, AS PLATZER, MF AF EKATERINARIS, JA CRICELLI, AS PLATZER, MF TI A ZONAL METHOD FOR UNSTEADY, VISCOUS, COMPRESSIBLE AIRFOIL FLOWS SO JOURNAL OF FLUIDS AND STRUCTURES LA English DT Article ID EULER EQUATIONS; SCHEMES C1 USN,POSTGRAD SCH,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943. RP EKATERINARIS, JA (reprint author), NASA,AMES RES CTR,NAVY NASA JOINT INST AERONAUT,MOFFETT FIELD,CA 94035, USA. NR 26 TC 20 Z9 20 U1 0 U2 0 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0889-9746 J9 J FLUID STRUCT JI J. Fluids Struct. PD JAN PY 1994 VL 8 IS 1 BP 107 EP 123 DI 10.1006/jfls.1994.1005 PG 17 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA MV023 UT WOS:A1994MV02300005 ER PT J AU KOKUBUN, S YAMAMOTO, T ACUNA, MH HAYASHI, K SHIOKAWA, K KAWANO, H AF KOKUBUN, S YAMAMOTO, T ACUNA, MH HAYASHI, K SHIOKAWA, K KAWANO, H TI THE GEOTAIL MAGNETIC-FIELD EXPERIMENT SO JOURNAL OF GEOMAGNETISM AND GEOELECTRICITY LA English DT Article ID FLUX ROPES; CDAW-8 AB The Geotail spacecraft carries a high-resolution Magnetic Field Experiment to provide magnetic field data in the frequency range below 50 Hz. This experiment includes dual fluxgate magnetometers and a search coil magnetometer. Fluxgate sensors are mounted at distances of 4 m and 6 m from the spacecraft on a deployable mast to reduce spacecraft-generated noises. Both outboard and inboard fluxgate magnetometers have 7 automatically switchable ranges from +/- 16 nT to +/- 65536 nT (full scale) and resolutions equivalent to a 15-bit A/D conversion in each range. The basic sampling rate for the A/D conversion is 128 Hz for both magnetometers. Sampled signals axe averaged to 16 vectors/s for the outboard magnetometer and 4 vectors/s for the inboard magnetometer for telemetry. Time-derivatives of magnetic field in the frequency range of 1-50 Hz (128 vector-samples/s) are acquired by the three-component search coil magnetometer (located on another mast), separated by 4 m from the spacecraft. Fluxgate data are continuously obtained at the same rate for both real-time and recorded modes of operation, while search coil data are only acquired in the real-time telemetry operation. The instruments were operated after the time of mast deployment on September 4, 1992, and are presently working in all modes as designed. The details of this experiment and initial observations are presented. C1 UNIV TOKYO,DEPT EARTH & PLANETARY PHYS,TOKYO 113,JAPAN. INST SPACE & ASTRONAUT SCI,SAGAMIHARA,KANAGAWA 229,JAPAN. NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. RP KOKUBUN, S (reprint author), NAGOYA UNIV,SOLAR TERR ENVIRONM LAB,TOYOKAWA,AICHI 442,JAPAN. NR 14 TC 561 Z9 561 U1 1 U2 9 PU TERRA SCIENTIFIC PUBL CO PI TOKYO PA 302 JIYUGAOKA-KOMATSU BLDG 24-17 MIDORIGAOKA 2-CHOME, TOKYO TOKYO 152, JAPAN SN 0022-1392 J9 J GEOMAGN GEOELECTR JI J. Geomagn. Geoelectr. PY 1994 VL 46 IS 1 BP 7 EP 21 PG 15 WC Geosciences, Multidisciplinary SC Geology GA MZ622 UT WOS:A1994MZ62200002 ER PT J AU BURTON, ME CROOKER, NU SISCOE, GL SMITH, EJ AF BURTON, ME CROOKER, NU SISCOE, GL SMITH, EJ TI A TEST OF SOURCE-SURFACE MODEL PREDICTIONS OF HELIOSPHERIC CURRENT SHEET INCLINATION SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID PLANETARY SECTOR BOUNDARIES AB The orientation of the heliospheric current sheet predicted from a source surface model is compared with the orientation determined from minimum-variance analysis of ISEE 3 magnetic field data at 1 AU near solar maximum. Of the 37 cases analyzed, 28 have minimum variance normals that lie orthogonal to the predicted Parker spiral direction. For these cases, the correlation coefficient between the predicted and measured inclinations is 0.6. However, for the subset of 14 cases for which transient signatures (either interplanetary shocks or bidirectional elections) are absent, the agreement in inclinations improves dramatically, with a correlation coefficient of 0.96. These results validate not only the use of the source surface model as a predictor but also the previously questioned usefulness of minimum variance analysis across complex sector boundaries. In addition, the results imply that interplanetary dynamics have little effect on current sheet inclination at 1 AU. The dependence of the correlation on transient occurrence suggests that the leading edge of a coronal mass ejection (CME), where transient signatures are detected, disrupts the heliospheric current sheet but that the sheet re-forms between the trailing legs of the CME. In this way the global structure of the heliosphere, reflected both in the source surface maps and in the interplanetary sector structure, can be maintained even when the CME occurrence rate is high. C1 UNIV CALIF LOS ANGELES,DEPT ATMOSPHER SCI,LOS ANGELES,CA 90024. RP BURTON, ME (reprint author), CALTECH,JET PROP LAB,JET PROP MAIL STOP 169-506,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 20 TC 28 Z9 28 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 1 EP 9 DI 10.1029/93JA02100 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600001 ER PT J AU LINDSAY, GM RUSSELL, CT LUHMANN, JG GAZIS, P AF LINDSAY, GM RUSSELL, CT LUHMANN, JG GAZIS, P TI ON THE SOURCES OF INTERPLANETARY SHOCKS AT 0.72 AU SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID STREAM INTERFACES; MAGNETIC CLOUDS; EVENTS AB In order to understand the solar cycle variation of interplanetary shocks and their driving source at 0.72 AU, a survey of Pioneer Venus Orbiter (PVO) magnetometer and plasma data from 1979-1988 has been conducted. Known shock drivers at 1.0 AU include coronal mass ejections (CMEs) and fast/slow stream interactions. In our analysis, CMEs were identified by a decrease in plasma temperature to background or below accompanied by an increase in plasma density and dynamic pressure. It was also required that the magnetic field exhibit a coherent rotation over about a day and an increase and decline in magnitude on a timescale of hours to days. Stream interactions were identified by a characteristic increase in ion temperature and velocity coincident with a decrease in density and a coincident increase in the total magnetic field magnitude. These signatures were usually preceded within 24 hours by a change in flow angle. In all, 45 shocks were identified: 36 driven by CMEs, 6 resulting from fast/slow stream interactions, and 3 with sources that could not be defined. The shocks driven by CMEs show a solar cycle variation that roughly follows the sunspot number. These shocks all have normals consistent with radial propagation of the shock fronts from the sun. In contrast, the few stream interaction related shocks show a tendency to occur later in the solar cycle and have a broader distribution of shock normals. C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RP LINDSAY, GM (reprint author), UNIV CALIF LOS ANGELES,INST GEOPHYS & PLANETARY PHYS,405 HILGARD AVE,LOS ANGELES,CA 90024, USA. OI Russell, Christopher/0000-0003-1639-8298 NR 25 TC 47 Z9 47 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 11 EP 17 DI 10.1029/93JA02666 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600002 ER PT J AU BIRN, J HESSE, M AF BIRN, J HESSE, M TI PARTICLE-ACCELERATION IN THE DYNAMIC MAGNETOTAIL - ORBITS IN SELF-CONSISTENT 3-DIMENSIONAL MHD FIELDS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID BOUNDARY-LAYER; RECONNECTION; DISTRIBUTIONS; TAIL AB The acceleration of protons in a dynamically evolving magnetotail is investigated by tracing particles in the fields obtained from a three-dimensional resistive MHD simulation. The MHD simulation, representing plasmoid formation and ejection through a near-Earth reconnection process, leads to cross-tail electric fields of up to approximately 4 mV/m with integrated voltages across the tail of up to approximately 200 kV. Energization of particles takes place over a wide range along the tail, due to the large spatial extent of the increased electric field together with the finite cross-tail extent of the electric field region. Such accelerated particles appear earthward of the neutral line over a significant portion of the closed field line region inside of the separatrix, not just in the vicinity of the separatrix. Two different acceleration processes are identified: a ''quasi-potential'' acceleration, due to particle motion in the direction of the cross-tail electric field, and a ''quasi-betatron'' effect, which consists of multiple energy gains from repeated crossings of the acceleration region, mostly on Speiser-type orbits, in the spatially varying induced electric field. The major source region for accelerated particles in the hundreds of keV range is the central plasma sheet at the dawn flank outside the reconnection site. Since this source plasma is already hot and dense, its moderate energization by a factor of approximately 2 may be sufficient to explain the observed increases in the energetic particle fluxes. Particles from the tail are the source of beams at the plasma sheet/lobe boundary. The temporal increase in the energetic particle fluxes, estimated from the increase in energy gain, occurs on a fast timescale of a few minutes, coincident with a strong increase in B,, despite the fact that the inner boundary (''injection boundary'') of the distribution of energized particles is fairly smooth. C1 NASA,GODDARD SPACE FLIGHT CTR,ELECTRODYNAM BRANCH,GREENBELT,MD 20771. RP BIRN, J (reprint author), LOS ALAMOS NATL LAB,SST-7,MS D466,LOS ALAMOS,NM, USA. RI Hesse, Michael/D-2031-2012 NR 23 TC 47 Z9 47 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 109 EP 119 DI 10.1029/93JA02284 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600012 ER PT J AU LUI, ATY SPENCE, HE STERN, DP AF LUI, ATY SPENCE, HE STERN, DP TI EMPIRICAL MODELING OF THE QUIET TIME NIGHTSIDE MAGNETOSPHERE SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID INTERPLANETARY MAGNETIC-FIELD; TAIL CURRENT SHEET; PLASMA SHEET; EARTHS MAGNETOTAIL; GEOMAGNETIC-FIELD; PRESSURE; STATE; EQUILIBRIUM; CONVECTION; PARAMETERS AB Empirical modeling of plasma pressure and magnetic field for the quiet time nightside magnetosphere is investigated. Two models are constructed for this study. One model, referred to here as T89R, is basically the magnetic field model of Tsyganenko (1989) but is modified by the addition of an inner eastward ring current at a radial distance of similar to 3 R(E) as suggested by observation. The other is a combination of the T89R model and the long version of the magnetic field model of Tsyganenko (1987) such that the former dominates the magnetic field in the inner magnetosphere, whereas the latter prevails in the distant tail. The distribution of plasma pressure, which is required to balance the magnetic force for each of these two field models, is computed along the tail axis in the midnight meridian. The occurrence of pressure anisotropy in the inner magnetospheric region is also taken into account by determining an empirical fit to the observed plasma pressure anisotropy. This effort is the first attempt to obtain the plasma pressure distribution in-force equilibrium with magnetic stresses from an empirical field model with the inclusion of pressure anisotropy. The inclusion of pressure anisotropy alters the plasma pressure by as much as a factor of similar to 3 in the inner magnetosphere. The deduced plasma pressure profile along the tail axis is found to be in good agreement with the observed quiet time plasma pressure for geocentric distances between similar to 2 and similar to 35 R(E). C1 AEROSP CORP,CTR SPACE & ENVIRONM TECHNOL,LOS ANGELES,CA 90045. NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. RP LUI, ATY (reprint author), JOHNS HOPKINS UNIV,APPL PHYS LAB,JOHNS HOPKINS RD,LAUREL,MD 20723, USA. RI Spence, Harlan/A-1942-2011 NR 40 TC 45 Z9 45 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 151 EP 157 DI 10.1029/93JA02647 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600015 ER PT J AU TSYGANENKO, NA PEREDO, M AF TSYGANENKO, NA PEREDO, M TI ANALYTICAL MODELS OF THE MAGNETIC-FIELD OF DISK-SHAPED CURRENT SHEETS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID GEOMAGNETIC NEUTRAL SHEET; PLASMA SHEET; RING CURRENT; QUANTITATIVE MODELS; POSITION; TAIL; MAGNETOSPHERE; PARAMETERS AB Disk-shaped current distributions are useful tools in modeling the magnetospheres of Earth and other planets and have also been adapted for modeling the geotail. Such models usually start with an axisymmetric vector potential but may be modified to account for observed asymmetries, variable thickness, and warping in response to an inclined Orientation of the planetary dipole axis. Models of this type until now either have lacked the ability to simulate a sharp inner edge of the current and to control accurately its falloff with distance or did not allow a simple analytical representation. Here existing methods will be reviewed, after which a new class of models which overcomes the above deficiencies and also allows the modeling of current disks of finite thickness flanked by current-free regions will be presented. C1 NASA, GODDARD SPACE FLIGHT CTR, HUGHES STX CORP, EXTRATERR PHYS LAB, GREENBELT, MD 20771 USA. RP NASA, GODDARD SPACE FLIGHT CTR, EXTRATERR PHYS LAB, GREENBELT, MD 20771 USA. RI Tsyganenko, Nikolai/J-7377-2012 OI Tsyganenko, Nikolai/0000-0002-5938-1579 NR 24 TC 30 Z9 31 U1 0 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9380 EI 2169-9402 J9 J GEOPHYS RES-SPACE JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 199 EP 205 DI 10.1029/93JA02768 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600020 ER PT J AU NAKAMURA, R BAKER, DN YAMAMOTO, T BELIAN, RD BERING, EA BENBROOK, JR THEALL, JR AF NAKAMURA, R BAKER, DN YAMAMOTO, T BELIAN, RD BERING, EA BENBROOK, JR THEALL, JR TI PARTICLE AND FIELD SIGNATURES DURING PSEUDOBREAKUP AND MAJOR EXPANSION ONSET SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID MAGNETOSPHERIC SUBSTORMS; ALIGNED CURRENTS; PHASE; SHEET; DISRUPTION; DIVERSION; MECHANISM; MODELS; ORBIT AB The temporal and spatial scales of the onset of two types of substorm events are investigated. These substorms were cases where the expansion onset had precursor localized auroral activation without significant negative bay enhancement, that is, ''pseudobreakup''. High-resolution energetic particle and magnetic field data at synchronous orbit are used for the analysis together with auroral and magnetic field data simultaneously taken from ground-based instrumentation. The auroral structure following the pseudobreakup significantly resembled the major expansion aurora, except in its spatial scale. Typical magnetospheric onset signatures such as tail current diversion, dipolarization, and injection were observed associated with some of the pseudobreakups. The major expansion, on the other hand, consisted of a number of rather localized injection and expansions, each of which had timescales of 2-8 min, a comparable timescale to that of pseudobreakups. This study shows that there does not appear to be any phenomenological differences between pseudobreakups and major expansion onsets. The major difference between pseudobreakups and major expansion onsets would be the number of occurrences, as well as the intensity and the scale size of the magnetospheric source. C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. INST SPACE & ASTRONAUT SCI,SAGAMIHARA,KANAGAWA 229,JAPAN. UNIV HOUSTON,DEPT PHYS,HOUSTON,TX 77204. RP NAKAMURA, R (reprint author), NAGOYA UNIV,SOLAR TERR ENVIRONM LAB,HONOHARA 3-13,TOYOKAWA,AICHI 442,JAPAN. RI Nakamura, Rumi/I-7712-2013 OI Nakamura, Rumi/0000-0002-2620-9211 NR 37 TC 96 Z9 97 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 207 EP 221 DI 10.1029/93JA02207 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600021 ER PT J AU WONG, HK GOLDSTEIN, ML AF WONG, HK GOLDSTEIN, ML TI ELECTRON-CYCLOTRON WAVE GENERATION BY RELATIVISTIC ELECTRONS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID TERRESTRIAL KILOMETRIC RADIATION; Z-MODE RADIATION; PLANETARY MAGNETOSPHERES; POLAR CUSP; ACOUSTIC INSTABILITY; GROUND FACILITIES; RADIO EMISSIONS; AURORAL HISS; FIELD; ACCELERATION AB We show that an energetic electron distribution which has a temperature anisotropy (T-perpendicular to b > T-parallel to b), or which is gyrating about a DC magnetic field, can generate electron cyclotron waves with frequencies below the electron cyclotron frequency. Relativistic effects are included in solving the dispersion equation and are shown to be quantitatively important. The basic idea of the mechanism is the coupling of the beam mode to slow waves. The unstable electron cyclotron waves are predominantly electromagnetic and right-hand polarized. For a low-density plasma in which the electron plasma frequency is less than the electron cyclotron frequency, the excited waves can have frequencies above or below the electron plasma frequency, depending upon the parameters of the energetic electron distribution. This instability may account for observed Z mode waves in the polar magnetosphere of the Earth and other planets. C1 NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. RP WONG, HK (reprint author), SW RES INST,DEPT SPACE SCI,SAN ANTONIO,TX 78284, USA. RI Goldstein, Melvyn/B-1724-2008 NR 26 TC 12 Z9 15 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 235 EP 239 DI 10.1029/93JA02319 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600023 ER PT J AU GERMANY, GA TORR, MR TORR, DG RICHARDS, PG AF GERMANY, GA TORR, MR TORR, DG RICHARDS, PG TI USE OF FUV AURORAL EMISSIONS AS DIAGNOSTIC INDICATORS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID INCIDENT ELECTRON SPECTRUM; NEUTRAL ATMOSPHERE; ATOMIC OXYGEN; DEDUCING COMPOSITION; OPTICAL MEASUREMENTS; IMPACT EXCITATION; CROSS-SECTIONS; MODEL; DEPENDENCE; CONDUCTANCES AB In an earlier study we modeled selected FUV auroral emissions (O I (1356 Angstrom, N-2 Lyman-Birge-Hopfield (LBH) (1464 Angstrom, and LBH (1838 Angstrom)) to examine the sensitivity of these emissions and their ratios to likely changes in the neutral atmosphere. In this paper we extend that study to examine the dependence of these same emissions and their ratios on the shape of the energy distribution of the auroral electrons. In particular, we wish to determine whether changes in energy spectra might interfere with our determination of the characteristic energy. Modeled column-integrated emissions show relatively small (<30%) dependences on the shape and width of the incident energy spectrum, provided the average energy and total energy flux of the energy distribution are held constant. Long-wavelength FUV emissions, which are relatively unaffected by O-2 absorption losses, exhibit virtually no dependence on the shape of the incident energy distribution. Changes in ratios of FUV short- to long-wavelength emissions as a function of characteristic energy are much larger than those due to changes in energy distribution. As a result, the determination of characteristic energy using these emission ratios is relatively unambiguous. We also examine the relative intensities of the aurora and the dayglow for various conditions. The intensities of modeled FUV auroral emissions relative to the dayglow emissions are presented as a function of solar zenith angle and incident energy flux. Under certain conditions (energy flux less than or equal to 1 erg cm(-2) s(-1) and solar zenith angle less than or equal to 50 degrees) the dayglow will be the limiting factor in the detection of weak auroras. C1 NASA,MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. UNIV ALABAMA,CTR SPACE PLASMA & AERON RES,DEPT COMP SCI,HUNTSVILLE,AL 35899. RP GERMANY, GA (reprint author), UNIV ALABAMA,CTR SPACE PLASMA & AERON RES,DEPT PHYS,HUNTSVILLE,AL 35899, USA. NR 19 TC 56 Z9 59 U1 1 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 383 EP 388 DI 10.1029/93JA02357 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600038 ER PT J AU ALPERT, YL GREEN, JL AF ALPERT, YL GREEN, JL TI CONE STRUCTURE AND FOCUSING OF VLF AND LF ELECTROMAGNETIC-WAVES AT HIGH-ALTITUDES IN THE IONOSPHERE SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID DIPOLE AB The frequency and angle dependencies of the electric field radiated by an electric dipole E = E(0) cos omega t are studied through numerical calculations of \E\ in the VLF and LF frequency bands 0.02f(b) less than or equal to F less than or equal to 0.5f(b) in a model ionosphere over an altitude region of 800-6000 km where the wave frequency and electron gyrofrequency varies between F similar to 4 - 500 kHz and f(b) similar or equal to (1.1 to 0.2) MHz respectively. It is found that the amplitudes of the electric field have large maxima in four regions: close to the direction of the Earth magnetic field line B-0 (it is called the axis field E(0)), in the Storey E(St), reversed Storey E(RevSt), and resonance E(Res) cones. The maximal values of E(0), E(Res), and E(Rev.St) are the most pronounced close to the lower hybrid frequency, F similar to F-L. The flux of the electric field is concentrated in very narrow regions, with the apex angles of the cones Delta beta similar or equal to (0.1 - 1) deg. The enhancement and focusing of the electric field increases with altitude starting at Z > 800 km. At Z greater than or equal to 1000 up to 6000 km, the relative value of \E\, in comparison with its value at Z = 800 km is about (10(2) to 10(4)) times larger. Thus the flux of VLF and LF electromagnetic waves generated at high altitudes in the Earth's ionosphere are trapped into very narrow conical beams similar to laser beams. C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RP ALPERT, YL (reprint author), HARVARD SMITHSONIAN CTR ASTROPHYS,60 BARDEN ST,CAMBRIDGE,MA 02138, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES JI J. Geophys. Res-Space Phys. PD JAN 1 PY 1994 VL 99 IS A1 BP 389 EP 399 DI 10.1029/93JA01473 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MR026 UT WOS:A1994MR02600039 ER PT J AU RIGNOT, E DRINKWATER, MR AF RIGNOT, E DRINKWATER, MR TI WINTER SEA-ICE MAPPING FROM MULTIPARAMETER SYNTHETIC-APERTURE RADAR DATA SO JOURNAL OF GLACIOLOGY LA English DT Article ID DIELECTRIC-PROPERTIES; MICROWAVE SIGNATURES; FREQUENCIES; SCATTERING; SUMMER; GHZ; SCATTEROMETER; STATISTICS AB The limitations of current and immediate future single-frequency, single-polarization, space-borne SARs for winter sea-ice mapping are quantitatively examined, and improvements are suggested by combining frequencies and polarizations. Ice-type maps are generated using multi-channel, air-borne SAR observations of winter sea ice in the Beaufort Sea to identify six ice conditions: (1) multi-year sea ice; (2) compressed first-year ice; (3) first-year rubble and ridges; (4) first-year rough ice; (5) first-year smooth ice; and (6) first-year thin ice. At a single polarization, C- (lambda = 5.6 cm) and L- (lambda = 24 cm) band frequencies yield a classification accuracy of 67 and 71%, because C-band confuses multi-year ice and compressed, rough, thick first-year ice surrounding multi-year ice floes, and L-band confuses multi-year ice and deformed first-year ice. Combining C- and L-band improves classification accuracy by 20%. Adding a second polarization at one frequency only improves classification accuracy by 10-14% and separates thin ice and calm open water. Under similar winter-ice conditions, ERS-1 (C(VV)) and Radarsat (C(HH)) would overestimate the multi-year ice fraction by 15% but correctly may the spatial variability of ice thickness; J-ERS-1 (L(HH)) would perform poorly; and J-ERS-1 combined with ERS-1 or Radarsat would yield reliable estimates of the old, thick, first-year and thin-ice fractions, and of the spatial distribution of ridges. With two polarizations, future single-frequency space-borne SARs could improve our current capability to discriminate thinner ice types. RP RIGNOT, E (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. RI Drinkwater, Mark/C-2478-2011; Rignot, Eric/A-4560-2014 OI Drinkwater, Mark/0000-0002-9250-3806; Rignot, Eric/0000-0002-3366-0481 NR 51 TC 40 Z9 40 U1 1 U2 5 PU INT GLACIOL SOC PI CAMBRIDGE PA LENSFIELD RD, CAMBRIDGE, ENGLAND CB2 1ER SN 0022-1430 J9 J GLACIOL JI J. Glaciol. PY 1994 VL 40 IS 134 BP 31 EP 45 PG 15 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NT101 UT WOS:A1994NT10100003 ER PT J AU LONG, DG DRINKWATER, MR AF LONG, DG DRINKWATER, MR TI GREENLAND ICE-SHEET SURFACE-PROPERTIES OBSERVED BY THE SEASAT-A SCATTEROMETER AT ENHANCED RESOLUTION SO JOURNAL OF GLACIOLOGY LA English DT Article ID SAR BACKSCATTER SIGNATURES; WEST GREENLAND; SNOW; ACCUMULATION; TEMPERATURE; ABLATION; SYSTEM; OCEAN AB For 3 months in 1978, the 14.6 GHz Seasat-A scatterometer (SASS) measured the normalized microwave-radar back-scatter coefficient of the Earth's surface for the purpose of estimating near-surface vector winds over the ocean. SASS also made back-scatter measurements over land and ice regions; however, the application of this data has been limited due to the low (50 km) resolution of the measurements. Using a new technique for generating 6 km enhanced-resolution SASS images of the radar back-scatter characteristics, we present a study of the 1978 condition of the Greenland ice sheet. We derive a time-series of back-scatter images spanning the period July-September 1978. These images show the extent of summer ablation along the ice-sheet periphery. Using the data and models relating firn structure and condition to radar back-scatter characteristics, we delineate and map the seasonal extent of zones which appear to correspond to dry-snow, percolation, wet-snow, and ablation facies, over virtually the entire ice sheet. The results provide a base line with which to compare current (ERS-1) and future Greenland radar maps of snow- and ice-surface conditions. C1 CALTECH,JET PROP LAB,PASADENA,CA 91109. RP LONG, DG (reprint author), BRIGHAM YOUNG UNIV,DEPT ELECT & COMP ENGN,PROVO,UT 84602, USA. RI Drinkwater, Mark/C-2478-2011; Long, David/K-4908-2015 OI Drinkwater, Mark/0000-0002-9250-3806; Long, David/0000-0002-1852-3972 NR 31 TC 48 Z9 48 U1 2 U2 8 PU INT GLACIOL SOC PI CAMBRIDGE PA LENSFIELD RD, CAMBRIDGE, ENGLAND CB2 1ER SN 0022-1430 J9 J GLACIOL JI J. Glaciol. PY 1994 VL 40 IS 135 BP 213 EP 230 PG 18 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA PB987 UT WOS:A1994PB98700001 ER PT J AU ZWALLY, HJ FIEGLES, S AF ZWALLY, HJ FIEGLES, S TI EXTENT AND DURATION OF ANTARCTIC SURFACE MELTING SO JOURNAL OF GLACIOLOGY LA English DT Article ID MICROWAVE AB The extent and duration of surface melting on the Antarctic ice shelves and margins of the Antarctic ice sheet are derived from satellite passive-microwave data for 1978-87. The occurrence of surface melting in daily maps of T-b is indicated by a marked increase in microwave brightness temperature (T-b), which is caused by moisture in the near-surface firn. T-b increases of more than 30 deg above the annual-mean T-b are chosen to indicate melting. Most Antarctic surface melting occurs during December and January. The observed melting is correlated with regional air temperatures, but some melt patterns also appear to be related to katabatic-wind effects. The correlations suggest that the surface melting in Antarctica increases about 3.5 x 10(6) d km(2) per degree of summer temperature increase. The surface-melt index (duration times area of melting) calculated for Antarctica is 24 x 10(6) d km(2), averaged over nine summers. The observed inter-annual and regional variability is large. Surface melting was most extensive during the 1982/83 summer (36 x 10(6) d km(2)) and least extensive during the 1985/86 summer (15 x 10(6) d km(2)). The data indicate a decline in surface melting over the 9 years, but meaningful inferences regarding trends in surface melting are precluded by the large inter-annual variability. C1 HUGHES STX CORP,GREENBELT,MD 20770. RP ZWALLY, HJ (reprint author), NASA,GODDARD SPACE FLIGHT CTR,OCEANS & ICE BRANCH,GREENBELT,MD 20771, USA. NR 13 TC 79 Z9 79 U1 1 U2 2 PU INT GLACIOL SOC PI CAMBRIDGE PA LENSFIELD RD, CAMBRIDGE, ENGLAND CB2 1ER SN 0022-1430 J9 J GLACIOL JI J. Glaciol. PY 1994 VL 40 IS 136 BP 463 EP 476 PG 14 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA PY995 UT WOS:A1994PY99500003 ER PT J AU LAUNIUS, RD AF LAUNIUS, RD TI UNTITLED SO JOURNAL OF GOVERNMENT INFORMATION LA English DT Letter RP LAUNIUS, RD (reprint author), NASA,WASHINGTON,DC 20546, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 1352-0237 J9 J GOV INFORM JI J. Gov. Inf. PD JAN-FEB PY 1994 VL 21 IS 1 BP 60 EP 62 PG 3 WC Information Science & Library Science SC Information Science & Library Science GA NE426 UT WOS:A1994NE42600008 ER PT J AU SEYWALD, H KUMAR, RR DESHPANDE, SS HECK, ML AF SEYWALD, H KUMAR, RR DESHPANDE, SS HECK, ML TI MINIMUM FUEL SPACECRAFT REORIENTATION SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB Fuel optimal solutions for the reorientation of an inertially symmetric rigid spacecraft with independent three axes controls are investigated. All possible optimal control strategies are identified. These include bang-bang solutions, finite-order singular arcs, and infinite-order singluar arcs. Higher order necessary conditions for optimality of finite-order singular arcs are presented. Numerical examples of fuel optimal solutions with fixed maneuver time are presented involving all of the theoretically possible control logics. C1 NASA,LANGLEY RES CTR,ANALYT MECH ASSOCIATES INC,SPACE STN FREEDOM OFF,HAMPTON,VA 23666. RP SEYWALD, H (reprint author), NASA,LANGLEY RES CTR,ANALYT MECH ASSOCIATES INC,SPACECRAFT CONTROLS BRANCH,17 RES DR,HAMPTON,VA 23666, USA. NR 16 TC 11 Z9 11 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 1994 VL 17 IS 1 BP 21 EP 29 DI 10.2514/3.21154 PG 9 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA MT282 UT WOS:A1994MT28200003 ER EF