FN Thomson Reuters Web of Science™ VR 1.0 PT J AU ZILLIAC, GG AF ZILLIAC, GG TI MODELING, CALIBRATION, AND ERROR ANALYSIS OF 7-HOLE PRESSURE PROBES SO EXPERIMENTS IN FLUIDS LA English DT Article ID FLOW AB This report describes the calibration of a non-nulling, conical seven-hole pressure probe over a large range of flow onset angles. The calibration procedure is based on the use of differential pressures to determine the three components of velocity. The method allows determination of the flow angle and velocity magnitude to within an average error of 1.0-degrees and 1.0% respectively. Greater accuracy can be achieved by using high quality pressure transducers. Also included is an examination of the factors which limit the use of the probe, a description of the measurement chain, an error analysis, and a typical experimental result. In addition, a new general analytical model of pressure probe behavior is described and the validity of the model is demonstrated by comparing it with experimentally measured calibration data for a three-hole yaw meter and a seven-hole probe. RP ZILLIAC, GG (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 19 TC 43 Z9 47 U1 0 U2 0 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0723-4864 J9 EXP FLUIDS JI Exp. Fluids PY 1993 VL 14 IS 1-2 BP 104 EP 120 PG 17 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA KC766 UT WOS:A1993KC76600014 ER PT B AU NEWMAN, JC AF NEWMAN, JC BE Bailon, JP Dickson, JI TI MODELING SMALL FATIGUE-CRACK BEHAVIOR SO FATIGUE 93, VOLS 1-3 SE INTERNATIONAL FATIGUE SERIES - IFS LA English DT Proceedings Paper CT 5th International Conference on Fatigue and Fatigue Thresholds CY MAY 03-07, 1993 CL MONTREAL, CANADA SP ECOLE POLYTECH MONTREAL, CANADIAN COMM STRENGTH & FRACTURE MAT, CANADIAN INST MIN & MET, MET SOC, ASM INT, CANADIAN COUNCIL C1 NASA, LANGLEY RES CTR, HAMPTON, VA 23665 USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU ENGINEERING MATERIALS ADVISORY SERVICES LTD PI SHEFFIELD PA C/O NCODE, 230 WOODBOURN RD, SHEFFIELD S9 3LQ, ENGLAND BN 0-947817-60-3 J9 INT FATIG SER PY 1993 BP 33 EP 44 PG 12 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BB62X UT WOS:A1993BB62X00003 ER PT B AU TELESMAN, J GHOSN, LJ AF TELESMAN, J GHOSN, LJ BE Bailon, JP Dickson, JI TI EFFECT OF CRYSTAL ORIENTATION ON THE FATIGUE-CRACK GROWTH-BEHAVIOR OF A SINGLE-CRYSTAL ALLOY SO FATIGUE 93, VOLS 1-3 SE INTERNATIONAL FATIGUE SERIES - IFS LA English DT Proceedings Paper CT 5th International Conference on Fatigue and Fatigue Thresholds CY MAY 03-07, 1993 CL MONTREAL, CANADA SP ECOLE POLYTECH MONTREAL, CANADIAN COMM STRENGTH & FRACTURE MAT, CANADIAN INST MIN & MET, MET SOC, ASM INT, CANADIAN COUNCIL C1 NASA, LEWIS RES CTR, CLEVELAND, OH 44135 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ENGINEERING MATERIALS ADVISORY SERVICES LTD PI SHEFFIELD PA C/O NCODE, 230 WOODBOURN RD, SHEFFIELD S9 3LQ, ENGLAND BN 0-947817-60-3 J9 INT FATIG SER PY 1993 BP 835 EP 840 PG 6 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BB62X UT WOS:A1993BB62X00118 ER PT B AU MIRDAMADI, M JOHNSON, WS AF MIRDAMADI, M JOHNSON, WS BE Bailon, JP Dickson, JI TI FATIGUE OF [0/90]2S-SCS-6/TI-15-3 COMPOSITE UNDER GENERIC HYPERSONIC VEHICLE FLIGHT SIMULATION SO FATIGUE 93, VOLS 1-3 SE INTERNATIONAL FATIGUE SERIES - IFS LA English DT Proceedings Paper CT 5th International Conference on Fatigue and Fatigue Thresholds CY MAY 03-07, 1993 CL MONTREAL, CANADA SP ECOLE POLYTECH MONTREAL, CANADIAN COMM STRENGTH & FRACTURE MAT, CANADIAN INST MIN & MET, MET SOC, ASM INT, CANADIAN COUNCIL C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENGINEERING MATERIALS ADVISORY SERVICES LTD PI WARLEY PA 339 HALESOWEN RD, CRADLEY HEATH, WARLEY, W MIDLANDS, ENGLAND B64 6PH BN 0-947817-60-3 J9 INT FATIG SER PY 1993 BP 951 EP 956 PG 6 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BB62X UT WOS:A1993BB62X00137 ER PT B AU JOHNSON, WS MIRDAMADI, M BAKUCKAS, JG AF JOHNSON, WS MIRDAMADI, M BAKUCKAS, JG BE Bailon, JP Dickson, JI TI FATIGUE OF CONTINUOUS FIBER-REINFORCED METALLIC MATERIALS SO FATIGUE 93, VOLS 1-3 SE INTERNATIONAL FATIGUE SERIES - IFS LA English DT Proceedings Paper CT 5th International Conference on Fatigue and Fatigue Thresholds CY MAY 03-07, 1993 CL MONTREAL, CANADA SP ECOLE POLYTECH MONTREAL, CANADIAN COMM STRENGTH & FRACTURE MAT, CANADIAN INST MIN & MET, MET SOC, ASM INT, CANADIAN COUNCIL C1 NASA, LANGLEY RES CTR, HAMPTON, VA 23665 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ENGINEERING MATERIALS ADVISORY SERVICES LTD PI SHEFFIELD PA C/O NCODE, 230 WOODBOURN RD, SHEFFIELD S9 3LQ, ENGLAND BN 0-947817-60-3 J9 INT FATIG SER PY 1993 BP 983 EP 993 PG 11 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BB62X UT WOS:A1993BB62X00142 ER PT B AU BARTOLOTTA, PA KANTZOS, P VERRILLI, MJ DIKERSON, RM AF BARTOLOTTA, PA KANTZOS, P VERRILLI, MJ DIKERSON, RM BE Bailon, JP Dickson, JI TI ENVIRONMENTAL DEGRADATION OF AN INTERMETALLIC MATRIX COMPOSITE DURING THERMOMECHANICAL FATIGUE SO FATIGUE 93, VOLS 1-3 SE INTERNATIONAL FATIGUE SERIES - IFS LA English DT Proceedings Paper CT 5th International Conference on Fatigue and Fatigue Thresholds CY MAY 03-07, 1993 CL MONTREAL, CANADA SP ECOLE POLYTECH MONTREAL, CANADIAN COMM STRENGTH & FRACTURE MAT, CANADIAN INST MIN & MET, MET SOC, ASM INT, CANADIAN COUNCIL C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENGINEERING MATERIALS ADVISORY SERVICES LTD PI WARLEY PA 339 HALESOWEN RD, CRADLEY HEATH, WARLEY, W MIDLANDS, ENGLAND B64 6PH BN 0-947817-60-3 J9 INT FATIG SER PY 1993 BP 1001 EP 1006 PG 6 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BB62X UT WOS:A1993BB62X00144 ER PT B AU ALLEN, JA SHANKAR, R AF ALLEN, JA SHANKAR, R BE Koutsougeras, C TI CHECKING THE CORRECTNESS OF MISSION PLANS SO FIFTH INTERNATIONAL CONFERENCE ON TOOLS WITH ARTIFICIAL INTELLIGENCE, TAI '93, PROCEEDINGS LA English DT Proceedings Paper CT 5th International Conference on Tools with Artificial Intelligence (TAI 93) CY NOV 08-11, 1993 CL BOSTON, MA SP IEEE, COMP SOC, AAAI SOC, BINGHAMTON UNIV, AAAI LAB, UNIV ILLINOIS CHICAGO, UNIV TORONTO CANADA C1 NASA,AMES RES CTR,AI RES BRANCH,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 0-8186-4200-9 PY 1993 BP 462 EP 463 DI 10.1109/TAI.1993.634003 PG 2 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BZ56P UT WOS:A1993BZ56P00073 ER PT J AU DEMARTINI, EE ELLIS, DM HONDA, VA AF DEMARTINI, EE ELLIS, DM HONDA, VA TI COMPARISONS OF SPINY LOBSTER PANULIRUS-MARGINATUS FECUNDITY, EGG SIZE, AND SPAWNING FREQUENCY BEFORE AND AFTER EXPLOITATION SO FISHERY BULLETIN LA English DT Article ID JASUS-LALANDII; MATURITY; DECAPODA; FEMALE; OUTPUT AB Size-specific fecundities of spiny lobster Panulirus marginatus were compared for two time-periods: pre- and early exploitation or ''before'' (1978-81), and post-exploitation or ''after'' (1991). Fecundity was further evaluated within each time-period at two collection sites that represented the major lobster fishing grounds (Maro Reef and Necker Island) in the Northwestern Hawaiian Islands. Complementary data on egg size and spawning-frequency index were compared between study sites and time-periods. Study sites and time-periods had no observable effects on egg size or spawning frequency, and there was no temporal effect on fecundity at Maro Reef. Fecundities at the two sites differed, however; ''after'' size-specific fecundity was an estimated 16+/-9% greater than ''before'' fecundity at Necker Island. Observations suggest that the recent increase in fecundity at Necker Island may reflect a compensatory (density-dependent) response to greater exploitation at this site. Results are discussed in terms of evidence for density-dependent responses in other, exploited spiny lobster stocks. C1 NOAA,NATL MARINE FISHERIES SERV,PACIFIC AREA OFF,HONOLULU,HI 96850. RP DEMARTINI, EE (reprint author), NOAA,NATL MARINE FISHERIES SERV,SW FISHERIES SCI CTR,HONOLULU LAB,2570 DOLE ST,HONOLULU,HI 96822, USA. NR 30 TC 19 Z9 22 U1 0 U2 2 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 1993 VL 91 IS 1 BP 1 EP 7 PG 7 WC Fisheries SC Fisheries GA LA053 UT WOS:A1993LA05300001 ER PT J AU KRIEGER, KJ AF KRIEGER, KJ TI DISTRIBUTION AND ABUNDANCE OF ROCKFISH DETERMINED FROM A SUBMERSIBLE AND BY BOTTOM TRAWLING SO FISHERY BULLETIN LA English DT Article AB A manned submersible was used in the eastern Gulf of Alaska to observe spatial distributions of Pacific ocean perch Sebastes alutus and other Sebastes spp., and count rockfish for comparison with bottom-trawl catch rates. Twenty submersible dives were completed in 1988 and 1989 at depths of 188-290 m. Approximately 80% of the 5317 rockfish observed from the submersible were Pacific ocean perch. Most adult Pacific ocean perch were in groups of 2-200 over flat, pebble substrate. Fish within a group were 1-4 m apart, usually oriented into the current, and 0-7 m above bottom. Most juvenile Pacific ocean perch, and juveniles and adults of other Sebastes spp., were associated with rugged habitat (cobble, boulders, pinnacles, and coral). Densities of Pacific ocean perch estimated from bottom-trawl catches were approximately twice those observed from the submersible, indicating that the bridles and otter doors herded fish into the trawl. Bottom-trawl surveys may overestimate Pacific ocean perch abundance because of this possible herding effect and the preference of adult Pacific ocean perch for smooth (trawlable) substrate. RP KRIEGER, KJ (reprint author), NOAA,NATL MARINE FISHERIES SERV,ALASKA FISHERIES SCI CTR,AUKE BAY LAB,11305 GLACIER HIGHWAY,JUNEAU,AK 99801, USA. NR 16 TC 51 Z9 51 U1 0 U2 2 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 1993 VL 91 IS 1 BP 87 EP 96 PG 10 WC Fisheries SC Fisheries GA LA053 UT WOS:A1993LA05300008 ER PT J AU RENAUD, M GITSCHLAG, G KLIMA, E SHAH, A KOI, D NANCE, J AF RENAUD, M GITSCHLAG, G KLIMA, E SHAH, A KOI, D NANCE, J TI LOSS OF SHRIMP BY TURTLE EXCLUDER DEVICES (TEDS) IN COASTAL WATERS OF THE UNITED-STATES, NORTH-CAROLINA TO TEXAS - MARCH 1988 AUGUST 1990 SO FISHERY BULLETIN LA English DT Article AB Observers from the National Marine Fisheries Service collected information on catch rates of shrimp aboard commercial shrimp vessels during March 1988-August 1990. Comparisons were made between nets equipped with Turtle Excluder Devices (TEDs) and standard shrimp nets. Three types of TEDs were tested: Georgia TEDs with and without accelerator funnels, and Super Shooter TEDs with funnels. Fishing areas, time of day, and duration of tows were controlled by the captain of each vessel to simulate commercial conditions. A statistically-significant (P<0.05) mean loss in shrimp catch-per-unit-effort (CPUE) of 0.24 lb/h (3.6%) and 0.93 lb/h (13.6%) was exhibited by nets equipped with Georgia TEDs (with and without funnels, respectively) compared with standard nets. There was no significant difference in shrimp CPUE between standard nets and nets equipped with Super Shooter TEDs with a funnel. C1 NOAA,NATL MARINE FISHERIES SERV,SE FISHERIES SCI CTR,PASCAGOULA LAB,PASCAGOULA,MS 39567. RP RENAUD, M (reprint author), NOAA,NATL MARINE FISHERIES SERV,SE FISHERIES SCI CTR,GALVESTON LAB,4700 AVE U,GALVESTON,TX 77551, USA. NR 8 TC 13 Z9 13 U1 0 U2 2 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 1993 VL 91 IS 1 BP 129 EP 137 PG 9 WC Fisheries SC Fisheries GA LA053 UT WOS:A1993LA05300012 ER PT S AU SUESS, ST AF SUESS, ST BE Pick, M Machado, ME TI THE RELATIONSHIP BETWEEN CORONAL AND INTERPLANETARY MAGNETIC-FIELDS SO FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT ASTRON UNION, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP SUESS, ST (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB ES52,HUNTSVILLE,AL 35812, USA. NR 0 TC 9 Z9 9 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042339-6 J9 ADV SPACE RES PY 1993 VL 13 BP 31 EP 42 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BY79B UT WOS:A1993BY79B00005 ER PT S AU CROSBY, N ASCHWANDEN, M DENNIS, B AF CROSBY, N ASCHWANDEN, M DENNIS, B BE Pick, M Machado, ME TI FREQUENCY-DISTRIBUTIONS OF SOLAR-X-RAY FLARE PARAMETERS SO FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT ASTRON UNION, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP CROSBY, N (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771, USA. NR 0 TC 6 Z9 6 U1 0 U2 2 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042339-6 J9 ADV SPACE RES PY 1993 VL 13 BP 179 EP 182 DI 10.1016/0273-1177(93)90474-P PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BY79B UT WOS:A1993BY79B00025 ER PT S AU SCHWARTZ, RA FISHMAN, G MEEGAN, C WILSON, R PACIESAS, W AF SCHWARTZ, RA FISHMAN, G MEEGAN, C WILSON, R PACIESAS, W BE Pick, M Machado, ME TI STUDYING FLARE ACCELERATED ELECTRONS WITH BATSE SO FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT ASTRON UNION, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP SCHWARTZ, RA (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GSFC,HUGHES STX,CTR SOLAR DATA ANAL,CODE 682,GREENBELT,MD 20771, USA. NR 0 TC 12 Z9 12 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042339-6 J9 ADV SPACE RES PY 1993 VL 13 BP 233 EP 236 DI 10.1016/0273-1177(93)90482-Q PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BY79B UT WOS:A1993BY79B00033 ER PT S AU RAMATY, R MANDZHAVIDZE, N KOZLOVSKY, B SKIBO, JG AF RAMATY, R MANDZHAVIDZE, N KOZLOVSKY, B SKIBO, JG BE Pick, M Machado, ME TI ACCELERATION IN SOLAR-FLARES - INTERACTING PARTICLES VERSUS INTERPLANETARY PARTICLES SO FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT ASTRON UNION, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP RAMATY, R (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GSFC,GREENBELT,MD 20771, USA. NR 0 TC 34 Z9 34 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042339-6 J9 ADV SPACE RES PY 1993 VL 13 BP 275 EP 284 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BY79B UT WOS:A1993BY79B00041 ER PT S AU SCHMELZ, JT FLUDRA, A AF SCHMELZ, JT FLUDRA, A BE Pick, M Machado, ME TI UNIQUE SMM OBSERVATIONS OF AN IMPULSIVE DOUBLE SOLAR-FLARE - ENHANCED NEON ABUNDANCE SO FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT ASTRON UNION, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP SCHMELZ, JT (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GSFC,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771, USA. NR 0 TC 12 Z9 12 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042339-6 J9 ADV SPACE RES PY 1993 VL 13 BP 325 EP 328 DI 10.1016/0273-1177(93)90500-B PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BY79B UT WOS:A1993BY79B00051 ER PT S AU REAMES, DV AF REAMES, DV BE Pick, M Machado, ME TI NONTHERMAL PARTICLES IN THE INTERPLANETARY MEDIUM SO FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT ASTRON UNION, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP REAMES, DV (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 661,GREENBELT,MD 20771, USA. NR 0 TC 55 Z9 56 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042339-6 J9 ADV SPACE RES PY 1993 VL 13 BP 331 EP 339 DI 10.1016/0273-1177(93)90501-2 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BY79B UT WOS:A1993BY79B00052 ER PT S AU MEYER, JP AF MEYER, JP BE Pick, M Machado, ME TI ELEMENTAL ABUNDANCES IN ACTIVE REGIONS, FLARES AND INTERPLANETARY MEDIUM SO FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY SE ADVANCES IN SPACE RESEARCH LA English DT Review CT SYMP ON FUNDAMENTAL PROBLEMS IN SOLAR ACTIVITY, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, SCI COMM SOLAR TERRESTRIAL PHYS, INT ASTRON UNION, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP MEYER, JP (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771, USA. NR 0 TC 43 Z9 43 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042339-6 J9 ADV SPACE RES PY 1993 VL 13 BP 377 EP 390 DI 10.1016/0273-1177(93)90509-A PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BY79B UT WOS:A1993BY79B00060 ER PT B AU KAYTEN, GG AF KAYTEN, GG GP ACAD NATL AIR & ESPACE TI AN OVERVIEW OF LARGE CARGO AIRCRAFT TECHNOLOGY STUDIES SO FUTURE OF CARGO TRANSPORT AVIATION, INTERNATIONAL SYMPOSIUM LA English DT Proceedings Paper CT International Symposium on the Future of Cargo Transport Aviation CY MAR 25-27, 1993 CL STRASBOURG, FRANCE SP ACAD NATL AIR & ESPACE C1 NASA,WASHINGTON,DC 20546. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CEPADUES EDITIONS PI TOULOUSE PA 111 RUE NICOLAS VAUQUELIN, 31100 TOULOUSE, FRANCE BN 2-85428-340-6 PY 1993 BP 323 EP 330 PG 8 WC Business; Transportation SC Business & Economics; Transportation GA BC62L UT WOS:A1993BC62L00030 ER PT B AU MORRIS, SJ SAWYER, WC AF MORRIS, SJ SAWYER, WC GP ACAD NATL AIR & ESPACE TI ADVANCED CARGO AIRCRAFT MAY OFFER A POTENTIAL RENAISSANCE IN FREIGHT TRANSPORTATION SO FUTURE OF CARGO TRANSPORT AVIATION, INTERNATIONAL SYMPOSIUM LA English DT Proceedings Paper CT International Symposium on the Future of Cargo Transport Aviation CY MAR 25-27, 1993 CL STRASBOURG, FRANCE SP ACAD NATL AIR & ESPACE C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CEPADUES EDITIONS PI TOULOUSE PA 111 RUE NICOLAS VAUQUELIN, 31100 TOULOUSE, FRANCE BN 2-85428-340-6 PY 1993 BP 339 EP 360 PG 22 WC Business; Transportation SC Business & Economics; Transportation GA BC62L UT WOS:A1993BC62L00032 ER PT B AU BURKE, GR CHOW, TW GRAHAM, JS KOWALSKI, JE WHITAKER, WD JOHNSON, RA AF BURKE, GR CHOW, TW GRAHAM, JS KOWALSKI, JE WHITAKER, WD JOHNSON, RA GP IEEE TI IMPLEMENTATION OF A DEEP SPACE RECEIVER ON 350K GATE GAAS GATE ARRAYS SO GAAS IC SYMPOSIUM - TECHNICAL DIGEST 1993 LA English DT Proceedings Paper CT 15th Annual IEEE Gallium Arsenide Integrated Circuit (GaAS IC) Symposium CY OCT 10-13, 1993 CL SAN JOSE, CA SP IEEE, ELECTR DEVICES SOC, IEEE, MICROWAVE THEORY & TECH 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 0-7803-1393-3 PY 1993 BP 149 EP 152 DI 10.1109/GAAS.1993.394481 PG 4 WC Engineering, Electrical & Electronic; Physics, Condensed Matter SC Engineering; Physics GA BA08M UT WOS:A1993BA08M00031 ER PT B AU MATHER, JC BENNETT, CL BOGGESS, NW HAUSER, MG SMOOT, GF WRIGHT, EL AF MATHER, JC BENNETT, CL BOGGESS, NW HAUSER, MG SMOOT, GF WRIGHT, EL BE Gleiser, RJ Kozameh, CN Moreschi, OM TI RECENT RESULTS FROM COBE SO GENERAL RELATIVITY AND GRAVITATION 1992 LA English DT Proceedings Paper CT 13th International Conference on General Relativity and Gravitation ( GR 13 ) CY JUN 28-JUL 04, 1992 CL CORDOBA, ARGENTINA SP INT SOC GEN RELAT & GRAVITAT, ACAD NACL CIENCIAS ARGENTINA, CAMARA DIPUTADOS PROV CORDOBA, CAMARA SENADORES PROV CORDOBA, CONSEJO INVESTIGAC CIENT & TECNOL PROV CORDOBA, FAC MATEMAT ASTRON & FIS, FDN ANTORCHAS, GOBIERNO PORV CORDOBA, INT CTR THEORET PHYS, IST INTERCAMBIO CULTURAL ARGENTINO NORTEAMER C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX BN 0-7503-0261-5 PY 1993 BP 151 EP 178 PG 28 WC Astronomy & Astrophysics; Physics, Particles & Fields; Physics, Mathematical SC Astronomy & Astrophysics; Physics GA BZ39N UT WOS:A1993BZ39N00009 ER PT J AU OZIMA, M ZAHNLE, K AF OZIMA, M ZAHNLE, K TI MANTLE DEGASSING AND ATMOSPHERIC EVOLUTION - NOBLE-GAS VIEW SO GEOCHEMICAL JOURNAL LA English DT Article ID LOIHI SEAMOUNT; MASS FRACTIONATION; EARTHS INTERIOR; MAGMA OCEAN; RARE-GASES; BASALTS; NEON; ISOTOPES; CONSTRAINTS; DIAMONDS AB On the basis of recent high quality noble gas experimental data, we propose a scenario for the origin of terrestrial noble gases. The isotopic compositions of non-radiogenic, terrestrial noble gases (except for atmospheric neon) were established, prior to the Earth's accretion, in planetesimals by gravitational capture of solar-type noble gases from the solar nebula. Gravitational capture by planetesimals produces a pattern in which the strongest fractionations occur in the heaviest elements. After the formation of the Earth, neon was further fractionated during hydrodynamic escape of hydrogen from the primitive atmosphere to give rise to the present atmospheric neon isotopic composition. Therefore, except for neon, isotopic compositions of nonradiogenic noble gases both in the atmosphere and the solid earth are the same. Noble gas degassing from the solid earth occurred during the magma ocean stage through bubble (gas)/melt partition. Subsequent magma production and eruption throughout geological time has contributed little to atmospheric noble gases except for radiogenic components. From the comparision of He-3/He-4 ratios between the upper and lower mantles, we estimate that the Ar-40/Ar-36 ratio in the lower mantle is more than 6,000. Hence, we argue that the lower mantle has also undergone some degree of degassing. C1 NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. RP OZIMA, M (reprint author), OSAKA UNIV, DEPT EARTH & SPACE SCI, TOYONAKA, OSAKA 560, JAPAN. NR 51 TC 46 Z9 48 U1 1 U2 4 PU GEOCHEMICAL SOC JAPAN PI TOKYO PA 358-5 YAMABUKI-CHO, SHINJUKU-KU, TOKYO, 162-0801, JAPAN SN 0016-7002 EI 1880-5973 J9 GEOCHEM J JI Geochem. J. PY 1993 VL 27 IS 4-5 BP 185 EP 200 PG 16 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA MU731 UT WOS:A1993MU73100002 ER PT J AU JONES, JH HART, SR BENJAMIN, TM AF JONES, JH HART, SR BENJAMIN, TM TI EXPERIMENTAL PARTITIONING STUDIES NEAR THE FE-FES EUTECTIC, WITH AN EMPHASIS ON ELEMENTS IMPORTANT TO IRON METEORITE CHRONOLOGIES (PB, AG, PD, AND TL) SO GEOCHIMICA ET COSMOCHIMICA ACTA LA English DT Article ID NI-S-P; ISOTOPIC COMPOSITION; LEAD; FRACTIONATION; SILVER; SYSTEM AB Partition coefficients (D) for metal/sulfide liquid, troilite/sulfide liquid, and schreibersite/sulfide liquid have been experimentally determined for Ag, Au, Mo, Ni, Pb, Pd, and Tl. With these partition coefficients, it should be possible to better understand the Pd-107-Ag-107 and Tl-205-Pb-205 systems of iron meteorites. In general, our schreibersite/metal and troilite/metal partition coefficients for ''compatible'' elements are quite similar to those inferred from natural assemblages. In contrast, these same partition coefficients for ''incompatible'' elements often do not even qualitatively agree with analyses of iron meteorites. We suggest that analyses of incompatible elements in iron meteorites may sometimes be dominated by minor/trace phases. Identification of such phases may allow refinement of the initial isotopic composition of Pb in the early solar system. If our trace impurity model is correct, it may also be possible to reconcile iron meteorite cooling rates inferred from silver isotopic systematics with those deduced from metallography. C1 WOODS HOLE OCEANOG INST,WOODS HOLE,MA 02543. LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545. RP JONES, JH (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058, USA. NR 36 TC 26 Z9 26 U1 0 U2 4 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 1993 VL 57 IS 2 BP 453 EP 460 DI 10.1016/0016-7037(93)90443-Z PG 8 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA KJ681 UT WOS:A1993KJ68100015 ER PT J AU RUZMAIKIN, A LIEWER, PC FEYNMAN, J AF RUZMAIKIN, A LIEWER, PC FEYNMAN, J TI RANDOM CELL DYNAMO SO GEOPHYSICAL AND ASTROPHYSICAL FLUID DYNAMICS LA English DT Article DE TURBULENT DYNAMO; RANDOM CELLS ID FIELD AB A simple numerical model of the self-excitation of the magnetic field by chaotic motion of a highly conductive fluid is being developed. It is based on the following approach to simulating the turbulent dynamo generation of magnetic fields: the fluid is divided into cells and each cell acts as a machine that can randomly amplify or destroy a given magnetic field. The random amplification models the effects of a chaotic fast dynamo and the random destruction models the effects of reconnection. Uncorrelated and correlated processes are considered. Effects of non-linearity, diffusion, and correlation between cells in time and space are also included. Numerical results are presented from one- and two-dimensional models and possible applications to the generation and spatial-temporal distribution of solar, planetary and interplanetary magnetic fields are discussed. C1 UNIV CALIF LOS ANGELES, DEPT PHYS, LOS ANGELES, CA 90024 USA. JET PROP LAB, PASADENA, CA 91109 USA. NR 20 TC 3 Z9 3 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI ABINGDON PA 4 PARK SQUARE, MILTON PARK, ABINGDON OX14 4RN, OXON, ENGLAND SN 0309-1929 J9 GEOPHYS ASTRO FLUID JI Geophys. Astrophys. Fluid Dyn. PY 1993 VL 73 IS 1-4 BP 163 EP 177 DI 10.1080/03091929308203627 PG 15 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Mechanics SC Astronomy & Astrophysics; Geochemistry & Geophysics; Mechanics GA MX044 UT WOS:A1993MX04400012 ER PT S AU TILFORD, SG ASRAR, G BACKLUND, PW AF TILFORD, SG ASRAR, G BACKLUND, PW BE Fellous, JL Ghazi, A TI MISSION TO PLANET EARTH SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME AB Mission to Planet Earth (MTPE) is NASA's concept for an international science program to produce the understanding needed to predict changes in the Earth's environment. NASA and its interagency and international partners will place satellites carrying advanced sensors in strategic Earth orbits to gather multidisciplinary data. A sophisticated data system will process and archive an unprecedented amount of information about the Earth and how it works as a system. Increased understanding of the Earth system is a basic human responsibility, a prerequisite to informed management of the planet's resources and to the preservation of the global environment. RP TILFORD, SG (reprint author), NASA,OFF SPACE SCI & APPLICAT,DIV EARTH SCI & APPLICAT,WASHINGTON,DC 20546, USA. NR 0 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 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 5 EP 9 PG 5 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00001 ER PT S AU THIEMAN, JR AF THIEMAN, JR BE Fellous, JL Ghazi, A TI USING THE INTERNATIONAL DIRECTORY NETWORK AND CONNECTED INFORMATION-SYSTEMS FOR RESEARCH IN THE EARTH AND SPACE SCIENCES SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME AB Many researchers are becoming aware of the International Directory Network (IDN), an interconnected federation of international directories to Earth and space science data. Are you aware, however, of the many Earth-sciece-relevant information systems which can be accessed automatically from the directories? After determining potentially useful data sets in various disciplines Through directories such as the Global Change Master Directory, it is becoming increasingly possible to get detailed information about the correlative possibilities of these data sets through the connected guide/catalog and inventory systems. Such capabilities as data set browse, subsetting, analysis, etc. are available now and will be improving in the future. RP THIEMAN, JR (reprint author), NASA,GODDARD SPACE FLIGHT CTR,NATL SPACE SCI DATA CTR,CODE 6332,GREENBELT,MD 20771, USA. 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 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 61 EP 66 PG 6 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00010 ER PT S AU SPENCER, RW AF SPENCER, RW BE Fellous, JL Ghazi, A TI GLOBAL TEMPERATURE MONITORING FROM SPACE SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME AB Global and regional temperature variations in the lower troposphere and lower stratosphere are examined for the period 1979-92 from Microwave Sounder Unit (MSU) data obtained by the TIROS-N series of NOAA operational satellites. In the lower troposphere, globally-averaged temperature variations appear to be dominated by tropical El Nino (warm) and La Nina (cool) events and volcanic eruptions. The Pinatubo volcanic eruption in June 1991 appears to have initiated a cooling trend which persisted through the most recent data analyzed (July, 1992), and largely overwhelmed the warming from the 1991-92 El Nino. The cooling has been stronger in the Northern Hemisphere than in the Southern Hemisphere. The temperature trend over the 13.5 year satellite record is small (+0.03 degrees C) compared to the year-to-year variability (0.2 degrees-0.4 degrees C), making detection of any global warming signal fruitless to date. However, the future global warming trend, currently predicted to be around 0.3 degrees C/decade, will be much easier to discern should it develop. The lower stratospheric temperature record is dominated by warm episodes from the Pinatubo eruption and the March 1982 eruption of El Chichon volcano. RP SPENCER, RW (reprint author), NASA,MARSHALL SPACE FLIGHT CTR,ES43,HUNTSVILLE,AL 35812, USA. NR 9 TC 0 Z9 0 U1 1 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 69 EP 75 PG 7 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00011 ER PT S AU SMITH, GL BARKSTROM, BR HARRISON, EF LEE, RB WIELICKI, BA AF SMITH, GL BARKSTROM, BR HARRISON, EF LEE, RB WIELICKI, BA BE Fellous, JL Ghazi, A TI RADIATION BUDGET MEASUREMENTS FOR THE EIGHTIES AND NINETIES SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME AB The Earth Radiation Budget Experiment (ERBE) consisted of a scanning radiometer and non-scanning radiometers on each of three spacecraft. These instruments began flying in October 1984. The nonscanning radiometers continue to operate, providing broadband radiation measurements of the Earth's outgoing longwave radiation and reflected solar radiation, in addition to measurements of the solar output. The Clouds and Earth Radiant Energy System (CERES) features a scanning radiometer, which is an improved version of the ERBE scanning radiometer, and will fly on the Tropical Rainfall Measurement Mission and Earth Observation System platforms in the late nineties. The CERES project will provide not only radiant fluxes at the ''top of the atmosphere'' (TOA), but also at the surface and will compute radiant flux divergence through the atmosphere. RP SMITH, GL (reprint author), NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23665, USA. NR 14 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 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 81 EP 84 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00013 ER PT S AU DUGDALE, R WILKERSON, F HALPERN, D CHAVEZ, F BARBER, R AF DUGDALE, R WILKERSON, F HALPERN, D CHAVEZ, F BARBER, R BE Fellous, JL Ghazi, A TI REMOTE-SENSING OF SEASONAL AND ANNUAL VARIATION OF EQUATORIAL NEW PRODUCTION - A MODEL FOR GLOBAL ESTIMATES SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME ID OCEAN; PACIFIC AB Sea-surface temperatures (SSTs) are strongly correlated with surface nitrate concentrations in coastal upwelling regions. Upwelling also occurs in the equatorial Pacific; correlations between temperature and nitrate concentration are strong. The University of Miami weekly averaged Advanced Very High Resolution Radiometer (AVHRR) SST data for October 1986 through June 1989 have been used to compute surface nitrate concentrations from 90 degrees - 180 degrees W and from 15 degrees S - 15 degrees N. The surface areas with nitrate above detection limits are combined with existing nitrate uptake data to give weekly estimates of equatorial new production. C1 CALTECH,JET PROP LAB,PASADENA,CA 91109. MONTEREY BAY AQUARIUM RES INST,PACIFIC GROVE,CA 93950. DUKE UNIV,MARINE LAB,BEAUFORT,NC 28516. RP DUGDALE, R (reprint author), UNIV SO CALIF,DEPT BIOL SCI,LOS ANGELES,CA 90089, USA. NR 17 TC 0 Z9 0 U1 1 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 169 EP 178 PG 10 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00028 ER PT S AU RITTER, JA BARRICK, JDW SACHSE, GW COLLINS, JE ANDERSON, BE HILL, GF WOERNER, MA HARKLEROAD, JE AF RITTER, JA BARRICK, JDW SACHSE, GW COLLINS, JE ANDERSON, BE HILL, GF WOERNER, MA HARKLEROAD, JE BE Fellous, JL Ghazi, A TI THE ROLE OF AIRBORNE EDDY-CORRELATION MEASUREMENTS IN GLOBAL CHANGE STUDIES SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME AB We have obtained measurements of the mean and turbulent quantities of heat, moisture, momentum, O-3, CO, and CH4 from an airborne platform. Species flux measurements obtained from these data provide unique regional-scale information which can be used to evaluate ''scaled-up'' flux estimates based on smaller scale observations. Airborne flux data also provide a basis for assessing the uncertainties associated with large-scale ground level flux extrapolations. Airborne constituent budget analyses are possible with this suite of measurements. The local change in the mean value of a parameter can be explained in terms of horizontal advection, vertical turbulent transport, and, in the case of chemically reactive species (i.e., O-3), in situ production or destruction. This technique is used to indicate a direct relationship between O-3 precursors and the measured in situ production rate. C1 NASA,DIV FLIGHT ELECTR,HAMPTON,VA 23681. SCI & TECHNOL CORP,HAMPTON,VA 23666. GRANBY HIGH SCH,NORFOLK,VA 23503. RP RITTER, JA (reprint author), NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23681, USA. NR 15 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 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 183 EP 186 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00030 ER PT S AU TORR, MR AF TORR, MR BE Fellous, JL Ghazi, A TI ATLAS-1 AND MIDDLE ATMOSPHERE GLOBAL CHANGE SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME AB To understand the extent and trends of middle atmosphere change, it is necessary to establish the baseline of atmospheric behavior and its response to changes in solar irradiance over at least a solar cycle. An element in NASA's global change program is the ATLAS shuttle series. The international payload includes several instruments intended to make precise, absolute measurements of solar irradiance, each being calibrated before and after each shuttle flight. These instruments, in addition to obtaining an 11-year database, will also intercalibrate solar instruments on the ERB and UARS satellites. Other instruments will measure the atmospheric composition and temperature, also intercalibrating instruments on TIROS-N and UARS. Some have flown on shuttle missions dating back to 1983 and it is hoped that the ATLAS series will provide a capability until the turn of the century. This paper reviews the early results of the ATLAS-1 mission, which new between March 24 and April 2, 1992. RP TORR, MR (reprint author), MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812, USA. NR 10 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 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 189 EP 199 PG 11 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00031 ER PT S AU KEATING, GM CHIOU, LS HSU, NC AF KEATING, GM CHIOU, LS HSU, NC BE Fellous, JL Ghazi, A TI COUPLING BETWEEN MIDDLE ATMOSPHERE TREND ESTIMATES AND SOLAR EFFECTS IN OZONE VERTICAL STRUCTURE SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME AB Studies are performed on both the SAGE II (1985-1989) and SBUV-Version 6 (1979-1986) global ozone vertical structure satellite data sets to determine the long-term trends in ozone as a function of altitude (pressure) and latitude. SAGE II data are only available during the period of increasing solar activity and show increases in ozone with time in the upper stratosphere which are attributed largely to rising solar activity. Looking at this data set independently, the solar effects and trends are highly coupled and cannot be clearly separated. However, a study of combined SBUV and SAGE II data over the 11-year solar cycle shows a clear response of ozone to 11-year solar variations and allows a decoupling of solar effects, quasibiennial oscillations (QBO), and trends. The detailed pattern of long-term ozone trends become clear using this approach. In the upper stratosphere, ozone depletion increases sharply with latitude. Global trends are fairly symmetric about the equator but are somewhat stronger in the Southern Hemisphere. Near the equator, some layers of ozone are decreasing with time while others appear to be increasing. Near 30 mb, there is evidence of intrusion to mid latitudes of high latitude negative trends. Near 15 mb, trends appear to be very weak. Near the tropopause there appears to be strong ozone depletion on a global scale. Two regions of unexpectedly strong ozone response to 11-year solar variations were detected: the first near 2 mb and the second near 30 mb at low latitudes and near 15 mb at mid latitudes. C1 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 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 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 201 EP 209 PG 9 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00032 ER PT S AU CALLIS, LB AF CALLIS, LB BE Fellous, JL Ghazi, A TI AN EXAMINATION OF GLOBAL VARIATIONS OF SUNSET NO2 AS MEASURED BY SAGE-II SO GLOBAL CHANGE AND SPACE OBSERVATIONS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Cospar Symposium on Global Change and Relevant Space Observations organized during the World Space Congress CY AUG 28-SEP 03, 1992 CL WASHINGTON, DC SP COMM SPACE RES, WORLD METEOROL ORG, INT ACAD ASTRONAUT, INT ASTRONAUT FED, INT UNION GEODESY & GEOPHYS, INT ASSOC METEOROL & ATMOSPHER PHYS, INT UNION GEODESY & GEOPHYS, INT ASSOC PHYS SCI OCEAN, NASA, CTR NATL ETUDES SPATIALES, NATL OCEANOG & ATMOSPHER ADM, SCI COMM OCEAN RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AGRON, EUROPEAN SPACE AGCY, UN ENVIRONM PROGRAMME ID STRATOSPHERE; FIELDS; OZONE AB Global variations of sunset NO2 are examined for the period October 24, 1984 through May 28, 1991 using SAGE II data. Between 60 degrees S and 60 degrees N declining trends are observed at all latitudes and at all altitudes above 25 km. For the column NO2 above 25 km, the area-weighted integrated trend between these latitudes is -2.5%/year. The largest rates of decline (5%/year) are at mid to high latitudes in each hemisphere. Different temporal behavior is observed with latitude and in the two hemispheres. The largest percentage changes of NO2 from year to year are observed near 40 km at high latitudes and can be as large as 160%. These results and previously reported simulations suggest that a modulating polar source of NOy and variations in atmospheric temperature and advective transport both contribute to the observed NO2 variations. RP CALLIS, LB (reprint author), NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,MS 401B,HAMPTON,VA 23665, USA. NR 7 TC 0 Z9 0 U1 1 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042476-7 J9 ADV SPACE RES PY 1993 VL 14 IS 1 BP 219 EP 222 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78C UT WOS:A1993BZ78C00035 ER PT B AU LEVITT, B SIMON, M POLYDOROS, A CHENG, UJ AF LEVITT, B SIMON, M POLYDOROS, A CHENG, UJ GP IEEE, COMMUN SOC TI PARTIAL-BAND DETECTION OF FREQUENCY-HOPPED SIGNALS SO GLOBECOM '93 COMMUNICATIONS FOR A CHANGING WORLD, CONFERENCE RECORD: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE LA English DT Proceedings Paper CT IEEE Global Telecommunications Conference, Including a Communications Theory Mini-Conference CY NOV 29-DEC 02, 1993 CL HOUSTON, TX SP IEEE, COMMUN SOC C1 JET PROP LAB,COMMUN SYST RES,PASADENA,CA 91109. NR 0 TC 3 Z9 4 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-0917-0 PY 1993 BP 70 EP 76 PG 7 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BA51K UT WOS:A1993BA51K00385 ER PT B AU HOOD, LE KROLL, QD ADKINS, AA AF HOOD, LE KROLL, QD ADKINS, AA GP IEEE, COMMUN SOC TI DYNAMIC ENVIRONMENT COMMUNICATIONS ANALYSIS TESTBED (DECAT) AND ITS APPLICATIONS TO SPACE STATION FREEDOM SO GLOBECOM '93 COMMUNICATIONS FOR A CHANGING WORLD, CONFERENCE RECORD: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE LA English DT Proceedings Paper CT IEEE Global Telecommunications Conference, Including a Communications Theory Mini-Conference CY NOV 29-DEC 02, 1993 CL HOUSTON, TX SP IEEE, COMMUN SOC C1 NASA,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 0-7803-0917-0 PY 1993 BP 961 EP 965 PG 5 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BA51K UT WOS:A1993BA51K00177 ER PT B AU GEVARGIZ, JM AF GEVARGIZ, JM GP IEEE, COMMUN SOC TI PERFORMANCE ANALYSIS OF AN ALL-DIGITAL PBSK DEMODULATOR SO GLOBECOM '93 COMMUNICATIONS FOR A CHANGING WORLD, CONFERENCE RECORD: IEEE GLOBAL TELECOMMUNICATIONS CONFERENCE LA English DT Proceedings Paper CT IEEE Global Telecommunications Conference, Including a Communications Theory Mini-Conference CY NOV 29-DEC 02, 1993 CL HOUSTON, TX SP IEEE, COMMUN 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 0-7803-0917-0 PY 1993 BP 1670 EP 1676 PG 7 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA BA51K UT WOS:A1993BA51K00308 ER PT B AU HATHAWAY, DH AF HATHAWAY, DH BE Brown, TM TI DOPPLER MEASUREMENT OF THE SOLAR MERIDIONAL CIRCULATION SO GONG 1992: SEISMIC INVESTIGATION OF THE SUN AND STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Conference on GONG 1992: Seismic Investigation of the Sun and Stars CY AUG 11-14, 1993 CL BOULDER, CO SP GLOBAL OSCILLAT NETWORK GRP C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 0-937707-61-9 J9 ASTR SOC P PY 1993 VL 42 BP 265 EP 268 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA06G UT WOS:A1993BA06G00055 ER PT J AU DANTONI, HL SPANNER, MA AF DANTONI, HL SPANNER, MA TI REMOTE-SENSING AND MODERN POLLEN DISPERSAL IN SOUTHERN PATAGONIA AND TIERRA-DEL-FUEGO (ARGENTINA) - MODELS FOR PALEOECOLOGY SO GRANA LA English DT Article AB A method is proposed for calibrating modem pollen data in terms of remote sensing data. It includes numerical techniques familiar to the pollen analyst, remote sensing data and a simple although robust technique of model testing. The method allows the calibration of equations to predict radiometric data in regions (such as Southern Patagonia) where the paucity of modern climate data is a major obstacle for research in palaeoclimatology. Remote sensing data from the National Oceanic and Atmospheric Administration (NOAA-9) Advanced Very High Resolution Radiometer (AVHRR) [Channels 1 (.58 to .68 mum) and 2 (.725 to 1. 1 mum)], were used to calculate albedo values. These values were used to (1) calculate simple ratio (SR) and Normalized Difference Vegetation Index (NDVI), and (2) to calibrate them in terms of the modern pollen spectra of 74 sites of Southern Chubut, Santa Cruz and Tierra del Fuego, to produce predictive models. The data sets were then split so that one half of the data predicted the radiometric data of the other half. The predicted data of channels 1 and 2 were then used to calculate predicted SR and NDVI values, thus opening new dimensions for paleoenvironmental research. Observed and predicted data have distinctive values in the forest, humid and arid steppes, and coastal locations. The models can be used to reconstruct the history of vegetation, particularly in the arid region. RP DANTONI, HL (reprint author), NASA,AMES RES CTR,MS 242-4,MOFFETT FIELD,CA 94053, USA. NR 0 TC 3 Z9 6 U1 1 U2 4 PU SCANDINAVIAN UNIVERSITY PRESS PI OSLO PA PO BOX 2959 TOYEN, JOURNAL DIVISION CUSTOMER SERVICE, N-0608 OSLO, NORWAY SN 0017-3134 J9 GRANA JI Grana PD JAN PY 1993 VL 32 IS 1 BP 29 EP 39 PG 11 WC Plant Sciences SC Plant Sciences GA KP451 UT WOS:A1993KP45100004 ER PT B AU MIDDLETON, EM AF MIDDLETON, EM BE Nasr, HN TI BIDIRECTIONAL SPECTRAL REFLECTANCES MEASURED ABOVE CONIFEROUS FORESTS FROM A GROUND-BASED PLATFORM SO GROUND SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT CONF ON GROUND SENSING CY APR 14, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS RP MIDDLETON, EM (reprint author), NASA,GODDARD SPACE FLIGHT CTR,TERR PHYS LAB,BIOSPHER SCI BRANCH,GREENBELT,MD 20771, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA BELLINGHAM BN 0-8194-1177-9 J9 P SOC PHOTO-OPT INS PY 1993 VL 1941 BP 30 EP 39 DI 10.1117/12.154700 PG 10 WC Forestry; Optics SC Forestry; Optics GA BZ37B UT WOS:A1993BZ37B00004 ER PT B AU KARAM, MA LEVINE, DM AF KARAM, MA LEVINE, DM BE Nasr, HN TI THE ATTENUATION OF SOIL RADIATION BY VEGETATION - A PHYSICAL APPROACH SO GROUND SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT CONF ON GROUND SENSING CY APR 14, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS RP KARAM, MA (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 975,GREENBELT,MD 20771, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA BELLINGHAM BN 0-8194-1177-9 J9 P SOC PHOTO-OPT INS PY 1993 VL 1941 BP 102 EP 112 DI 10.1117/12.154679 PG 11 WC Forestry; Optics SC Forestry; Optics GA BZ37B UT WOS:A1993BZ37B00012 ER PT B AU KARAM, MA LEVINE, DM AF KARAM, MA LEVINE, DM BE Nasr, HN TI THE POTENTIAL OF ACTIVE MICROWAVE SENSORS IN MONITORING UNDERGROUND PERMAFROST SO GROUND SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT CONF ON GROUND SENSING CY APR 14, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS RP KARAM, MA (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 975,GREENBELT,MD 20771, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA BELLINGHAM BN 0-8194-1177-9 J9 P SOC PHOTO-OPT INS PY 1993 VL 1941 BP 230 EP 240 DI 10.1117/12.154693 PG 11 WC Forestry; Optics SC Forestry; Optics GA BZ37B UT WOS:A1993BZ37B00024 ER PT B AU GILLIES, DC LEHOCZKY, SL SZOFRAN, FR LARSON, DJ SU, CH SHA, YG ALEXANDER, HA AF GILLIES, DC LEHOCZKY, SL SZOFRAN, FR LARSON, DJ SU, CH SHA, YG ALEXANDER, HA BE Longshore, RE Baars, JW TI BULK GROWTH OF II-VI CRYSTALS IN THE MICROGRAVITY ENVIRONMENT OF USML-1 SO GROWTH AND CHARACTERIZATION OF MATERIALS FOR INFRARED DETECTORS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Growth and Characterization of Materials for Infrared Detectors CY JUL 15-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 5 Z9 5 U1 2 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1270-8 J9 P SOC PHOTO-OPT INS PY 1993 VL 2021 BP 10 EP 21 DI 10.1117/12.164940 PG 12 WC Instruments & Instrumentation; Materials Science, Coatings & Films; Optics SC Instruments & Instrumentation; Materials Science; Optics GA BZ77Z UT WOS:A1993BZ77Z00002 ER PT B AU GLADDEN, HJ MELIS, ME AF GLADDEN, HJ MELIS, ME BE Khounsary, AM TI HYPERSONIC ENGINE COMPONENT EXPERIMENTS IN A HIGH HEAT-FLUX, SUPERSONIC-FLOW ENVIRONMENT SO HIGH HEAT FLUX ENGINEERING II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 2nd High Heat Flux Engineering Conference CY JUL 12-13, 1993 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 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1246-5 J9 P SOC PHOTO-OPT INS PY 1993 VL 1997 BP 472 EP 485 DI 10.1117/12.163822 PG 14 WC Engineering, Mechanical; Optics SC Engineering; Optics GA BZ74Y UT WOS:A1993BZ74Y00037 ER PT B AU JACOBSON, AS BERKIN, AL AF JACOBSON, AS BERKIN, AL BE Tentner, AM TI LINKWINDS, A SYSTEM FOR INTERACTIVE SCIENTIFIC-DATA ANALYSIS AND VISUALIZATION SO HIGH PERFORMANCE COMPUTING SYMPOSIUM 1993: GRAND CHALLENGES IN COMPUTER SIMULATION LA English DT Proceedings Paper CT 1993 Simulation Multiconference features the 1st High Performance Computing Symposium: Grand Challenges in Computer Simulation CY MAR 29-APR 01, 1993 CL ARLINGTON, VA SP SOC COMP SIMULAT C1 JET PROP LAB,PASADENA,CA 91109. 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 1-56555-052-8 PY 1993 BP 214 EP 219 PG 6 WC Computer Science, Interdisciplinary Applications SC Computer Science GA BA16Z UT WOS:A1993BA16Z00033 ER PT S AU HERGENROTHER, PM CONNELL, JW SMITH, JG AF HERGENROTHER, PM CONNELL, JW SMITH, JG BE Eby, RK Evers, RC Meador, MA Wilson, D TI CHEMISTRY AND PROPERTIES OF POLY(ARYLENE ETHER BENZIMIDAZOLE)S SO HIGH PERFORMANCE POLYMERS AND POLYMER MATRIX COMPOSITES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on High Performance Polymers and Polymer Matrix Composites, at the 1993 Spring Meeting of the Materials-Research-Society CY APR 13-16, 1993 CL SAN FRANCISCO, CA SP MAT RES SOC C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 3 Z9 3 U1 1 U2 2 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-201-4 J9 MATER RES SOC SYMP P PY 1993 VL 305 BP 21 EP 32 DI 10.1557/PROC-305-21 PG 12 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA BA12Y UT WOS:A1993BA12Y00002 ER PT S AU DELVIGS, P KLOPOTEK, DL CAVANO, PJ AF DELVIGS, P KLOPOTEK, DL CAVANO, PJ BE Eby, RK Evers, RC Meador, MA Wilson, D TI GRAPHITE FIBER POLYIMIDE COMPOSITES WITH IMPROVED PROCESSABILITY SO HIGH PERFORMANCE POLYMERS AND POLYMER MATRIX COMPOSITES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on High Performance Polymers and Polymer Matrix Composites, at the 1993 Spring Meeting of the Materials-Research-Society CY APR 13-16, 1993 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 1-55899-201-4 J9 MATER RES SOC SYMP P PY 1993 VL 305 BP 33 EP 38 DI 10.1557/PROC-305-33 PG 6 WC Materials Science, Composites; Polymer Science SC Materials Science; Polymer Science GA BA12Y UT WOS:A1993BA12Y00003 ER PT S AU MOUNT, FE AF MOUNT, FE BE Smith, MJ Salvendy, G TI HCI IN-SPACE SYSTEMS SO HUMAN-COMPUTER INTERACTION, VOL 1: APPLICATIONS AND CASE STUDIES SE ADVANCES IN HUMAN FACTORS / ERGONOMICS LA English DT Proceedings Paper CT 5th International Conference on Human-Computer Interaction (HCI International 93) CY AUG 08-13, 1993 CL ORLANDO, FL SP AT&T, FUJI ELECT CO, JGC CORP, NEC CORP, PURDUE UNIV, UNIV CENT FLORIDA, UNIV WISCONSIN MADISON, ACM SIGCAPH, CHINESE ACAD SCI, CHINESE INST IND ENGINEERS, EEC, EUROPEAN STRATEG PROGRAMME RES & DEV INFORM TECHNOL, FINNISH INST OCCUPAT HLTH, HUMAN FACTORS SOC, IEEE, INST MANAGEMENT SERV, INST IND ENGINEERS, INTELLIGENT MFG SYST CTR, INT ERGON ASSOC, INT ROBOT & FACTORY AUTOMAT CTR, JAPAN ERGON RES SOC, JAPAN ASSOC MED INFORMAT, JAPAN INST OFF AUTOMAT, JAPAN MANAGEMENT ASSOC, JAPAN SOC HLTH SCI, NIOSH, NATL INST IND HLTH JAPAN, SOC INSTRUMENT & CONTROL ENGINEERS JAPAN, SOFTWARE PSYCHOL SOC, SWEDISH CROSS DISCIPLINARY SOC HUMAN COMP INTERACT RP MOUNT, FE (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,DIV FLIGHT CREW SUPPORT,CREW INTERFACE ANAL SECT,SP34,HOUSTON,TX 77058, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-2647 BN 0-444-89540-X J9 ADV HUM FACT ERGON PY 1993 VL 19 BP 157 EP 160 PN A PG 4 WC Computer Science, Cybernetics; Ergonomics SC Computer Science; Engineering GA BA62K UT WOS:A1993BA62K00027 ER PT S AU HINMANSWEENEY, EM AF HINMANSWEENEY, EM BE Smith, MJ Salvendy, G TI DEVELOPING AN ELECTRONIC INTERNATIONAL NETWORK FOR SPACE-COMMUNICATION SO HUMAN-COMPUTER INTERACTION, VOL 1: APPLICATIONS AND CASE STUDIES SE ADVANCES IN HUMAN FACTORS / ERGONOMICS LA English DT Proceedings Paper CT 5th International Conference on Human-Computer Interaction (HCI International 93) CY AUG 08-13, 1993 CL ORLANDO, FL SP AT&T, FUJI ELECT CO, JGC CORP, NEC CORP, PURDUE UNIV, UNIV CENT FLORIDA, UNIV WISCONSIN MADISON, ACM SIGCAPH, CHINESE ACAD SCI, CHINESE INST IND ENGINEERS, EEC, EUROPEAN STRATEG PROGRAMME RES & DEV INFORM TECHNOL, FINNISH INST OCCUPAT HLTH, HUMAN FACTORS SOC, IEEE, INST MANAGEMENT SERV, INST IND ENGINEERS, INTELLIGENT MFG SYST CTR, INT ERGON ASSOC, INT ROBOT & FACTORY AUTOMAT CTR, JAPAN ERGON RES SOC, JAPAN ASSOC MED INFORMAT, JAPAN INST OFF AUTOMAT, JAPAN MANAGEMENT ASSOC, JAPAN SOC HLTH SCI, NIOSH, NATL INST IND HLTH JAPAN, SOC INSTRUMENT & CONTROL ENGINEERS JAPAN, SOFTWARE PSYCHOL SOC, SWEDISH CROSS DISCIPLINARY SOC HUMAN COMP INTERACT RP HINMANSWEENEY, EM (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,ORBITAL SYST & ROBOT BRANCH,EB62,HUNTSVILLE,AL 35812, USA. 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 SN 0921-2647 BN 0-444-89540-X J9 ADV HUM FACT ERGON PY 1993 VL 19 BP 161 EP 166 PN A PG 6 WC Computer Science, Cybernetics; Ergonomics SC Computer Science; Engineering GA BA62K UT WOS:A1993BA62K00028 ER PT S AU HAINES, RF CHUANG, SL AF HAINES, RF CHUANG, SL BE Smith, MJ Salvendy, G TI REMOTE COACHING MULTIMEDIA RESEARCH LABORATORY DEVELOPMENT AND EVALUATION SO HUMAN-COMPUTER INTERACTION, VOL 1: APPLICATIONS AND CASE STUDIES SE ADVANCES IN HUMAN FACTORS / ERGONOMICS LA English DT Proceedings Paper CT 5th International Conference on Human-Computer Interaction (HCI International 93) CY AUG 08-13, 1993 CL ORLANDO, FL SP AT&T, FUJI ELECT CO, JGC CORP, NEC CORP, PURDUE UNIV, UNIV CENT FLORIDA, UNIV WISCONSIN MADISON, ACM SIGCAPH, CHINESE ACAD SCI, CHINESE INST IND ENGINEERS, EEC, EUROPEAN STRATEG PROGRAMME RES & DEV INFORM TECHNOL, FINNISH INST OCCUPAT HLTH, HUMAN FACTORS SOC, IEEE, INST MANAGEMENT SERV, INST IND ENGINEERS, INTELLIGENT MFG SYST CTR, INT ERGON ASSOC, INT ROBOT & FACTORY AUTOMAT CTR, JAPAN ERGON RES SOC, JAPAN ASSOC MED INFORMAT, JAPAN INST OFF AUTOMAT, JAPAN MANAGEMENT ASSOC, JAPAN SOC HLTH SCI, NIOSH, NATL INST IND HLTH JAPAN, SOC INSTRUMENT & CONTROL ENGINEERS JAPAN, SOFTWARE PSYCHOL SOC, SWEDISH CROSS DISCIPLINARY SOC HUMAN COMP INTERACT RP HAINES, RF (reprint author), NASA,AMES RES CTR,SPACECRAFT DATA SYST RES BRANCH,RECOM TECHNOL,MOFFETT FIELD,CA 94035, USA. 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 SN 0921-2647 BN 0-444-89540-X J9 ADV HUM FACT ERGON PY 1993 VL 19 BP 191 EP 195 PN A PG 5 WC Computer Science, Cybernetics; Ergonomics SC Computer Science; Engineering GA BA62K UT WOS:A1993BA62K00033 ER PT S AU HALE, JP AF HALE, JP BE Smith, MJ Salvendy, G TI ERGONOMICS AND VDT DESIGN FOR SPACE ENVIRONMENTS SO HUMAN-COMPUTER INTERACTION, VOL 1: APPLICATIONS AND CASE STUDIES SE ADVANCES IN HUMAN FACTORS / ERGONOMICS LA English DT Proceedings Paper CT 5th International Conference on Human-Computer Interaction (HCI International 93) CY AUG 08-13, 1993 CL ORLANDO, FL SP AT&T, FUJI ELECT CO, JGC CORP, NEC CORP, PURDUE UNIV, UNIV CENT FLORIDA, UNIV WISCONSIN MADISON, ACM SIGCAPH, CHINESE ACAD SCI, CHINESE INST IND ENGINEERS, EEC, EUROPEAN STRATEG PROGRAMME RES & DEV INFORM TECHNOL, FINNISH INST OCCUPAT HLTH, HUMAN FACTORS SOC, IEEE, INST MANAGEMENT SERV, INST IND ENGINEERS, INTELLIGENT MFG SYST CTR, INT ERGON ASSOC, INT ROBOT & FACTORY AUTOMAT CTR, JAPAN ERGON RES SOC, JAPAN ASSOC MED INFORMAT, JAPAN INST OFF AUTOMAT, JAPAN MANAGEMENT ASSOC, JAPAN SOC HLTH SCI, NIOSH, NATL INST IND HLTH JAPAN, SOC INSTRUMENT & CONTROL ENGINEERS JAPAN, SOFTWARE PSYCHOL SOC, SWEDISH CROSS DISCIPLINARY SOC HUMAN COMP INTERACT RP HALE, JP (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,CREW SYST ENGN BRANCH,E023,HUNTSVILLE,AL 35812, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-2647 BN 0-444-89540-X J9 ADV HUM FACT ERGON PY 1993 VL 19 BP 196 EP 200 PN A PG 5 WC Computer Science, Cybernetics; Ergonomics SC Computer Science; Engineering GA BA62K UT WOS:A1993BA62K00034 ER PT B AU WENZEL, EM GAVER, WW FOSTER, SH LEVKOWITZ, H POWELL, R AF WENZEL, EM GAVER, WW FOSTER, SH LEVKOWITZ, H POWELL, R BE Ashlund, S Henderson, A Hollnagel, E Mullet, K White, T TI PERCEPTUAL VS HARDWARE PERFORMANCE IN ADVANCED ACOUSTIC INTERFACE DESIGN SO HUMAN FACTORS IN COMPUTING SYSTEMS: INTERCHI 93 LA English DT Proceedings Paper CT International Conference on Human-Computer Interaction (INTERCHI 93) CY APR 24-29, 1993 CL AMSTERDAM, NETHERLANDS SP ASSOC COMP MACHINERY, SPECIAL INTEREST GRP HUMAN COMP INTERACT, INT FEDERAT INFORMAT & PROCE DE ACOUSTIC DISPLAYS; MULTIMEDIA; AUDITORY PERCEPTION; USER-INTERFACE DESIGN ISSUES; HUMAN PERFORMANCE ISSUES C1 NASA,AMES RES CTR,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 BN 90-5199-133-9 PY 1993 BP 363 EP 366 PG 4 WC Computer Science, Cybernetics; Ergonomics SC Computer Science; Engineering GA BZ64B UT WOS:A1993BZ64B00065 ER PT J AU GOLDMAN, T BROWN, RE CAMP, JB CORNFORD, S DARLING, T DYER, P HOIBRATEN, S HOLZSCHEITER, MH HOSEA, K HUGHES, RJ JARMIE, N KENEFICK, RA KING, NSP LIZON, DC NIETO, MM MIDZOR, MM PARRY, SP ROCHET, J RISTENEN, RA SCHAUER, MMM SCHECKER, JA WITTEBORN, FC AF GOLDMAN, T BROWN, RE CAMP, JB CORNFORD, S DARLING, T DYER, P HOIBRATEN, S HOLZSCHEITER, MH HOSEA, K HUGHES, RJ JARMIE, N KENEFICK, RA KING, NSP LIZON, DC NIETO, MM MIDZOR, MM PARRY, SP ROCHET, J RISTENEN, RA SCHAUER, MMM SCHECKER, JA WITTEBORN, FC TI BEYOND METRIC GRAVITY - PROGRESS ON PS-200 SO HYPERFINE INTERACTIONS LA English DT Article ID QUANTUM-GRAVITY; GRAVITATIONAL ACCELERATION; ANTIMATTER; MATTER AB The reconciliation of quantum mechanics and gravity on varying distance scales requires changes to General Relativity that may have testable implications. We briefly review the status of tests with matter of the inverse square law and the principle of equivalence, then report on progress on the drift-tube measurement section of PS-200, the experiment to measure the gravitational acceleration of antiprotons. C1 TEXAS A&M UNIV SYST,COLL STN,TX 77843. UNIV COLORADO,BOULDER,CO 80309. NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. CERN,DIV PPE,CH-1211 GENEVA,SWITZERLAND. RP GOLDMAN, T (reprint author), LOS ALAMOS NATL LAB,POB 1663,LOS ALAMOS,NM 87545, USA. NR 18 TC 8 Z9 8 U1 1 U2 2 PU BALTZER SCI PUBL BV PI AMSTERDAM PA ASTERWEG 1A, 1031 HL AMSTERDAM, NETHERLANDS SN 0304-3843 J9 HYPERFINE INTERACT JI Hyperfine Interact. PY 1993 VL 81 IS 1-4 BP 87 EP 96 DI 10.1007/BF00567252 PG 10 WC Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter; Physics, Nuclear SC Physics GA MN873 UT WOS:A1993MN87300009 ER PT J AU DELGENIO, AD ZHOU, W EICHLER, TP AF DELGENIO, AD ZHOU, W EICHLER, TP TI EQUATORIAL SUPERROTATION IN A SLOWLY ROTATING GCM - IMPLICATIONS FOR TITAN AND VENUS SO ICARUS LA English DT Article ID GENERAL-CIRCULATION MODEL; MERIDIONAL CIRCULATION; GRAVITY-WAVES; ATMOSPHERE; OCCULTATION; DYNAMICS; TIDES; LEVEL; WINDS C1 ST SYST CORP,INST SPACE STUDIES,NEW YORK,NY 10025. RP DELGENIO, AD (reprint author), NASA,GODDARD INST SPACE STUDIES,NEW YORK,NY 10025, USA. RI Del Genio, Anthony/D-4663-2012 OI Del Genio, Anthony/0000-0001-7450-1359 NR 47 TC 86 Z9 86 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 0019-1035 J9 ICARUS JI Icarus PD JAN PY 1993 VL 101 IS 1 BP 1 EP 17 DI 10.1006/icar.1993.1001 PG 17 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KQ053 UT WOS:A1993KQ05300001 ER PT J AU HANNER, MS RUSSELL, RW LYNCH, DK BROOKE, TY AF HANNER, MS RUSSELL, RW LYNCH, DK BROOKE, TY TI INFRARED-SPECTROSCOPY AND PHOTOMETRY OF COMET AUSTIN 1990-V SO ICARUS LA English DT Article ID HALLEY MONITORING PROGRAM; AIRBORNE C1 AEROSP CORP,LOS ANGELES,CA 90009. RP HANNER, MS (reprint author), JET PROP LAB,183-601,PASADENA,CA 91109, USA. NR 23 TC 18 Z9 18 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 1993 VL 101 IS 1 BP 64 EP 70 DI 10.1006/icar.1993.1006 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KQ053 UT WOS:A1993KQ05300006 ER PT J AU KASTING, JF WHITMIRE, DP REYNOLDS, RT AF KASTING, JF WHITMIRE, DP REYNOLDS, RT TI HABITABLE ZONES AROUND MAIN-SEQUENCE STARS SO ICARUS LA English DT Article ID EARTHS EARLY ATMOSPHERE; PLANETARY SYSTEMS; CARBON-DIOXIDE; EARLY MARS; VENUS; EVOLUTION; CLIMATE; WET; GREENHOUSE; DEUTERIUM C1 UNIV SW LOUISIANA,DEPT PHYS,LAFAYETTE,LA 70504. NASA,AMES RES CTR,DIV SPACE SCI,MOFFETT FIELD,CA 94035. RP KASTING, JF (reprint author), PENN STATE UNIV,DEPT GEOSCI,211 DEIKE,UNIV PK,PA 16802, USA. NR 76 TC 947 Z9 957 U1 34 U2 259 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 1993 VL 101 IS 1 BP 108 EP 128 DI 10.1006/icar.1993.1010 PG 21 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KQ053 UT WOS:A1993KQ05300010 PM 11536936 ER PT J AU WALTER, MR DESMARAIS, DJ AF WALTER, MR DESMARAIS, DJ TI PRESERVATION OF BIOLOGICAL INFORMATION IN THERMAL-SPRING DEPOSITS - DEVELOPING A STRATEGY FOR THE SEARCH FOR FOSSIL LIFE ON MARS SO ICARUS LA English DT Article ID YELLOWSTONE-NATIONAL-PARK; SMALL MARTIAN VALLEYS; WESTERN-AUSTRALIA; NORTH-POLE; CARBONACEOUS FILAMENTS; ARCHEAN STROMATOLITES; FLUVIAL VALLEYS; SNC METEORITES; EVOLUTION; MICROFOSSILS C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RP WALTER, MR (reprint author), MACQUARIE UNIV,SCH EARTH SCI,N RYDE,NSW 2109,AUSTRALIA. NR 97 TC 119 Z9 123 U1 6 U2 18 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 1993 VL 101 IS 1 BP 129 EP 143 DI 10.1006/icar.1993.1011 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KQ053 UT WOS:A1993KQ05300011 PM 11536937 ER PT J AU CONRATH, BJ GAUTIER, D OWEN, TC SAMUELSON, RE AF CONRATH, BJ GAUTIER, D OWEN, TC SAMUELSON, RE TI CONSTRAINTS ON N-2 IN NEPTUNE ATMOSPHERE FROM VOYAGER MEASUREMENTS SO ICARUS LA English DT Note ID HELIUM ABUNDANCE; URANUS C1 OBSERV PARIS,F-92190 MEUDON,FRANCE. UNIV HAWAII,INST ASTRON,HONOLULU,HI 96822. RP CONRATH, BJ (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771, USA. NR 13 TC 29 Z9 29 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 1993 VL 101 IS 1 BP 168 EP 172 DI 10.1006/icar.1993.1014 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KQ053 UT WOS:A1993KQ05300014 ER PT S AU WINCHESKI, B NAMKUNG, M FULTON, JP AF WINCHESKI, B NAMKUNG, M FULTON, JP BE Levy, M McAvoy, BR TI QUALITY FACTOR AND MICROSLIPPING OF FATIGUE CRACKS IN THIN PLATES AT RESONANT VIBRATION SO IEEE 1993 ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2 SE ULTRASONICS SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1993 Ultrasonics Symposium CY OCT 31-NOV 03, 1993 CL BALTIMORE, MD SP ULTRASON FERROELECT & FREQUENCY CONTROL SOC C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. RI Namkung, Min/E-1533-2012 NR 0 TC 1 Z9 1 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 1051-0117 BN 0-7803-1278-3 J9 ULTRASON PY 1993 BP 673 EP 676 PG 4 WC Acoustics; Engineering, Electrical & Electronic SC Acoustics; Engineering GA BA31N UT WOS:A1993BA31N00127 ER PT S AU NAMKUNG, M FULTON, JP WINCHESKI, B AF NAMKUNG, M FULTON, JP WINCHESKI, B BE Levy, M McAvoy, BR TI SELF-ORGANIZED CRITICALITY AND PHASE PROBLEM IN MAGNETOACOUSTIC EMISSION BURST IN FERROMAGNETS SO IEEE 1993 ULTRASONICS SYMPOSIUM PROCEEDINGS, VOLS 1 AND 2 SE ULTRASONICS SYMPOSIUM LA English DT Proceedings Paper CT IEEE 1993 Ultrasonics Symposium CY OCT 31-NOV 03, 1993 CL BALTIMORE, MD SP ULTRASON FERROELECT & FREQUENCY CONTROL SOC C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. RI Namkung, Min/E-1533-2012 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 SN 1051-0117 BN 0-7803-1278-3 J9 ULTRASON PY 1993 BP 753 EP 756 PG 4 WC Acoustics; Engineering, Electrical & Electronic SC Acoustics; Engineering GA BA31N UT WOS:A1993BA31N00143 ER PT J AU GODFREY, MD HENDRY, DF AF GODFREY, MD HENDRY, DF TI THE COMPUTER AS VONNEUMANN PLANNED IT SO IEEE ANNALS OF THE HISTORY OF COMPUTING LA English DT Article C1 PRINCETON UNIV,FAC STAT,PRINCETON,NJ 08544. AT&T BELL LABS,MURRAY HILL,NJ 07974. TH ENGN INC,ALTADENA,CA. JET PROP LAB,SILICON STRUCT PROGRAM,PASADENA,CA 91109. POLYTECH S BANK,LONDON SE1 0AA,ENGLAND. UNIV LONDON,INST COMP SCI,LONDON,ENGLAND. RP GODFREY, MD (reprint author), STANFORD UNIV,ISL,DEPT ELECT ENGN,DURAND BLDG,STANFORD,CA 94305, USA. NR 14 TC 17 Z9 17 U1 0 U2 1 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 1058-6180 J9 IEEE ANN HIST COMPUT JI IEEE Ann. Hist. Comput. PY 1993 VL 15 IS 1 BP 11 EP 21 DI 10.1109/85.194088 PG 11 WC Computer Science, Theory & Methods; History & Philosophy Of Science SC Computer Science; History & Philosophy of Science GA KH291 UT WOS:A1993KH29100004 ER PT B AU MEHDI, I SIEGEL, P MAZED, M AF MEHDI, I SIEGEL, P MAZED, M GP IEEE TI FABRICATION AND CHARACTERIZATION OF PLANAR INTEGRATED SCHOTTKY DEVICES FOR VERY HIGH-FREQUENCY MIXERS SO IEEE/CORNELL CONFERENCE ON ADVANCED CONCEPTS IN HIGH SPEED SEMICONDUCTOR DEVICES AND CIRCUITS - PROCEEDINGS LA English DT Proceedings Paper CT IEEE/Cornell Conference on Advanced Concepts in High Speed Semiconductor Devices and Circuits CY AUG 02-04, 1993 CL CORNELL UNIV, ITHACA, NY SP IEEE, ELECTRON DEVICES SOC, USA, RES OFF, IEEE, MICROWAVE THEORY & TECH SOC, CORNELL UNIV HO CORNELL UNIV 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 0-7803-0894-8 PY 1993 BP 94 EP 102 PG 9 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BZ85C UT WOS:A1993BZ85C00011 ER PT J AU ALI, HB AF ALI, HB TI OCEANOGRAPHIC VARIABILITY IN SHALLOW-WATER ACOUSTICS AND THE DUAL ROLE OF THE SEA BOTTOM SO IEEE JOURNAL OF OCEANIC ENGINEERING LA English DT Article ID INTERNAL WAVES; OCEAN AB Acoustic propagation in shallow water is an area of major concern to the Navy. The difficulties associated with the use of acoustics in the ocean, however, are aggravated in shallow water. Multipath propagation and extensive boundary interactions, especially with the sea bottom, conspire, along with a host of other phenomena, to produce a highly variable and often unpredictable acoustic field. The responsible mechanisms, and hence the acoustic effects, cover a wide range of temporal and spatial scales. The mechanisms are classified as either deterministic or random, although the two types often act in concert. The sea bottom plays a dual role in shallow-water acoustics. Because of extensive interactions with the sound field, the bottom can severely degrade waterborne propagation. On the other hand, the sea bottom (and subbottom) can provide a seismic path that not only is relatively stable, but exists even under environmental conditions that preclude an effective waterborne path. Propagation in the bottom is particularly significant at very low frequencies, often being more efficient than high-frequency waterborne propagation. The preceding aspects of shallow-water acoustics-viz., variability and the dual role of the sea bottom-are illustrated using the results of experiments conducted in diverse geographic areas by the Naval Research Laboratory/SSC and by the SACLANT Undersea Research Centre. RP ALI, HB (reprint author), USN,RES LAB,STENNIS SPACE CTR,BAY ST LOUIS,MS 39529, USA. NR 31 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 0364-9059 J9 IEEE J OCEANIC ENG JI IEEE J. Ocean. Eng. PD JAN PY 1993 VL 18 IS 1 BP 31 EP 41 DI 10.1109/48.211498 PG 11 WC Engineering, Civil; Engineering, Ocean; Engineering, Electrical & Electronic; Oceanography SC Engineering; Oceanography GA KT016 UT WOS:A1993KT01600005 ER PT B AU SHIRRON, PJ DIPIRRO, MJ AF SHIRRON, PJ DIPIRRO, MJ BE VanDuzer, T TI CONCEPT FOR A HIGH-RESOLUTION THERMOMETER UTILIZING THE TEMPERATURE-DEPENDENCE OF THE MAGNETIC PENETRATION DEPTH SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL 3, NO 1, MARCH 1993 PTS 2-4 LA English DT Proceedings Paper CT 1992 Applied Superconductivity Conference CY AUG 23-28, 1992 CL CHICAGO, IL SP IEEE, ARGONNE NATL LAB, BABCOCK & WILCOX, US DOE, DIV BASIC ENERGY SCI CONSERVAT & RENEWABLE, US DOE, HIGH ENERGY PHYS, DEFENSE ADV RES PROJECTS AGCY, FERMI NATL ACCELERAT LAB, LAWRENCE BERKELEY LAB, TELEDYNE WAH CHANG C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 PY 1993 BP 2140 EP 2143 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA BZ49H UT WOS:A1993BZ49H00498 ER PT B AU STERN, JA LEDUC, HG ZMUIDZINAS, J AF STERN, JA LEDUC, HG ZMUIDZINAS, J BE VanDuzer, T TI QUASI-OPTICAL JOSEPHSON-JUNCTION OSCILLATOR ARRAYS SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, VOL 3, NO 1, MARCH 1993 PTS 2-4 LA English DT Proceedings Paper CT 1992 Applied Superconductivity Conference CY AUG 23-28, 1992 CL CHICAGO, IL SP IEEE, ARGONNE NATL LAB, BABCOCK & WILCOX, US DOE, DIV BASIC ENERGY SCI CONSERVAT & RENEWABLE, US DOE, HIGH ENERGY PHYS, DEFENSE ADV RES PROJECTS AGCY, FERMI NATL ACCELERAT LAB, LAWRENCE BERKELEY LAB, TELEDYNE WAH CHANG C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 10 Z9 10 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 PY 1993 BP 2485 EP 2488 DI 10.1109/77.233960 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA BZ49H UT WOS:A1993BZ49H00583 ER PT J AU SIMON, MK DIVSALAR, D AF SIMON, MK DIVSALAR, D TI MAXIMUM-LIKELIHOOD BLOCK DETECTION OF NONCOHERENT CONTINUOUS PHASE MODULATION SO IEEE TRANSACTIONS ON COMMUNICATIONS LA English DT Article AB This paper examines maximum-likelihood block detection of uncoded full response CPM over an additive white Gaussian noise (AWGN) channel. Both the maximum-likelihood metrics and the bit error probability performances of the associated detection algorithms are considered. The special and popular case of minimum-shift-keying (MSK) corresponding to h = 0.5 and constant amplitude frequency pulse is treated separately. The many new receiver structures that result from this investigation can be compared to the traditional ones that have been used in the past both from the standpoint of simplicity of implementation and optimality of performance. RP SIMON, MK (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 8 TC 39 Z9 43 U1 0 U2 2 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 1993 VL 41 IS 1 BP 90 EP 98 DI 10.1109/26.212365 PG 9 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA LB464 UT WOS:A1993LB46400012 ER PT J AU HINEDI, S AF HINEDI, S TI NASA NEXT-GENERATION ALL-DIGITAL DEEP SPACE NETWORK BREADBOARD RECEIVER SO IEEE TRANSACTIONS ON COMMUNICATIONS LA English DT Article ID TRACKING AB This paper describes the breadboard advanced receiver (ARX) that is currently being built for future use in NASA's deep space network (DSN). This receiver has unique requirements in having to operate with very weak signals from deep space probes and provide high quality telemetry and tracking data. The hybrid analog/digital receiver performs multiple functions including carrier, subcarrier and symbol synchronization. Tracking can be achieved for either residual, suppressed or hybrid carriers and for both sinusoidal and square wave subcarriers. System requirements are specified and a functional description of the ARX is presented. The various digital signal processing algorithms used are also discussed and illustrated with block diagrams. Other functions such as time tagged Doppler extraction and monitor/control are also discussed including acquisition algorithms and lock detection schemes. RP HINEDI, S (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 20 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 0090-6778 J9 IEEE T COMMUN JI IEEE Trans. Commun. PD JAN PY 1993 VL 41 IS 1 BP 246 EP 257 DI 10.1109/26.212383 PG 12 WC Engineering, Electrical & Electronic; Telecommunications SC Engineering; Telecommunications GA LB464 UT WOS:A1993LB46400027 ER PT J AU JAIN, RK FLOOD, DJ AF JAIN, RK FLOOD, DJ TI DESIGN MODELING OF HIGH-EFFICIENCY P+-N INDIUM-PHOSPHIDE SOLAR-CELLS SO IEEE TRANSACTIONS ON ELECTRON DEVICES LA English DT Note AB A parametric study of p+-n indium phosphide solar cells has been conducted using the PC-1D computer program. The effect of base doping on cell efficiency has been studied, and it is found that cell efficiency is a maximum for impurity concentrations around 10(17) cm-3. The variation of minority-carrier diffusion length as a function of base doping has been included. Using realistic values of electronic and material parameters, cell efficiencies in excess of 24% AMO (25-degrees-C) are predicted. RP JAIN, RK (reprint author), NASA, LEWIS RES CTR, CLEVELAND, OH 44135 USA. NR 15 TC 5 Z9 5 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI PISCATAWAY PA 445 HOES LANE, PISCATAWAY, NJ 08855-4141 USA SN 0018-9383 EI 1557-9646 J9 IEEE T ELECTRON DEV JI IEEE Trans. Electron Devices PD JAN PY 1993 VL 40 IS 1 BP 224 EP 227 DI 10.1109/16.249448 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA KC144 UT WOS:A1993KC14400034 ER PT J AU SPINHIRNE, JD AF SPINHIRNE, JD TI MICROPULSE LIDAR SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article ID SPECTRAL RESOLUTION LIDAR; AEROSOLS; STRATOSPHERE; TROPOSPHERE AB An eye safe, compact, solid state lidar for profiling atmospheric cloud and aerosol scattering has been demonstrated. The transmitter of the micro pulse lidar is a diode pumped muJ pulse energy, high repetition rate Nd:YLF laser. Eye safety is obtained through beam expansion. The receiver employs a photon counting solid state Geiger mode avalanche photodiode detector. Data acquisition is by a single card multichannel scaler. Daytime background induced quantum noise is controlled by a narrow receiver field-of-view (FOV) and a narrow bandwidth temperature controlled interference filter. Dynamic range of the signal is limited by optical geometric signal compression. Signal simulations and initial atmospheric measurements indicate that systems built on the micro pulse lidar concept are capable of detecting and profiling all significant cloud and aerosol scattering through the troposphere and into the stratosphere. The intended applications are scientific studies and environmental monitoring which require full time, unattended measurements of the cloud and aerosol height structure. RP SPINHIRNE, JD (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB 917,GREENBELT,MD 20771, USA. NR 21 TC 199 Z9 233 U1 4 U2 34 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 1993 VL 31 IS 1 BP 48 EP 55 DI 10.1109/36.210443 PG 8 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA KY645 UT WOS:A1993KY64500006 ER PT J AU WU, SC MELBOURNE, WG AF WU, SC MELBOURNE, WG TI AN OPTIMAL GPS DATA-PROCESSING TECHNIQUE FOR PRECISE POSITIONING SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article ID TRACKING; SYSTEM AB A mathematical formula to Optimally combine dual-frequency GPS pseudorange and carrier phase (integrated Doppler) data streams into a single data stream is derived in closed form. The data combination reduces the data volume and computing time in the filtering process for parameter estimation by a factor of 4 while preserving the full data strength for precise positioning. The resulting single data stream is that of carrier phase measurements with both data noise and bias uncertainty strictly defined. With this mathematical formula the single stream of optimally combined GPS measurements can be efficiently formed by simple numerical calculations. Carrier phase ambiguity resolution, when feasible, is strengthened due to the preserved full data strength with the optimally combined data and the resulting longer wavelength for the ambiguity to be resolved. C1 JET PROP LAB,DIV TELECOMMUN SCI & ENGN,PASADENA,CA 91109. JET PROP LAB,OFF SPACE SCI & INSTRUMENTS,PASADENA,CA 91109. RP WU, SC (reprint author), JET PROP LAB,TRACKING SYST & APPLICAT GRP,PASADENA,CA 91109, USA. NR 8 TC 11 Z9 14 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 1993 VL 31 IS 1 BP 146 EP 152 DI 10.1109/36.210455 PG 7 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA KY645 UT WOS:A1993KY64500018 ER PT J AU VANZYL, JJ AF VANZYL, JJ TI THE EFFECT OF TOPOGRAPHY ON RADAR SCATTERING FROM VEGETATED AREAS SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article ID FOREST STANDS; L-BAND; BACKSCATTERING AB This paper shows how the radar scattering from vegetated areas is affected by the topography of the surface underneath the vegetation. In particular, we show, using a discrete scatterer model, that the dominant scattering mechanism may change drastically when the ground surface is tilted relative to the horizontal. In the case of a horizontal ground surface, for example, the total scattering may be dominated by scattering off the tree trunks, followed by a reflection off the ground surface. We show that for a relatively small tilt in the ground surface (about 2-degrees from horizontal) the ground-trunk interaction term may be replaced by scattering from the branches alone as the dominant scattering mechanism. We also show that the effect of the topography is more pronounced for scattering by longer wavelengths, and discuss the implications on algorithms designed to infer forest woody biomass and soil and vegetation moisture using polarimetric SAR data. The effect of the topography on the scattering behavior from forested areas is illustrated with images acquired by the NASA/JPL three-frequency polarimetric SAR over the Black Forest in Germany. C1 JET PROP LAB,SPACEBOURNE IMAGING RADAR PROGRAM,PASADENA,CA 91109. RP VANZYL, JJ (reprint author), JET PROP LAB,RADAR SCI & ENGN SECT,AIRCRAFT SAR GRP,PASADENA,CA 91109, USA. NR 17 TC 80 Z9 82 U1 0 U2 5 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 1993 VL 31 IS 1 BP 153 EP 160 DI 10.1109/36.210456 PG 8 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA KY645 UT WOS:A1993KY64500019 ER PT J AU VILLASENOR, JD FATLAND, DR HINZMAN, LD AF VILLASENOR, JD FATLAND, DR HINZMAN, LD TI CHANGE DETECTION ON ALASKA NORTH SLOPE USING REPEAT-PASS ERS-1 SAR IMAGES SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article ID VEGETATION; HYDROLOGY; FOOTHILLS; TERRAIN; SITE AB Measurements of the C-band (wavelength = 5 cm) radar cross section of an area in the Brooks Range foothills on the North Slope of Alaska using images from the ER-S-1 satellite show significant temporal changes. These changes are strongly correlated with elevation and hillslope orientation and are greatest on some of the elevated areas and weaker in river drainages. By constructing ''difference images'' using various image pairs, and by analyzing climatological and hydrological data from the site, we conclude that the radar backscatter changes are largely due to changes in soil and vegetation liquid water content induced by freeze/thaw events. The correlation with topography in the difference images arises from the dependence of vegetation, organic layer thickness, and volumetric water content on hillslope position and orientation. These results demonstrate the viability of radar backscatter intensity comparisons using repeat-pass images as a means of change detection. C1 JET PROP LAB,PASADENA,CA 91109. UNIV ALASKA,WATER RES CTR,INST NO ENGN,FAIRBANKS,AK 99775. RP VILLASENOR, JD (reprint author), UNIV CALIF LOS ANGELES,DEPT ELECT ENGN,LOS ANGELES,CA 90024, USA. RI Hinzman, Larry/B-3309-2013 OI Hinzman, Larry/0000-0002-5878-6814 NR 23 TC 39 Z9 44 U1 0 U2 2 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 1993 VL 31 IS 1 BP 227 EP 236 DI 10.1109/36.210462 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 KY645 UT WOS:A1993KY64500025 ER PT J AU ZINK, M OLIVIER, P FREEMAN, A AF ZINK, M OLIVIER, P FREEMAN, A TI CROSS-CALIBRATION BETWEEN AIRBORNE SAR SENSORS SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article DE SYNTHETIC APERTURE RADAR (SAR); SYSTEM STABILITY; RADIOMETRIC CALIBRATION; CROSS-CALIBRATION ID IMAGES AB Quantitative analyses of SAR signatures require an absolute radiometric calibration of the complete SAR system. For future multichannel and multisensor remote sensing systems (e.g. SIR-C/X-SAR) it is desirable to be able to cross-calibrate data from different tracks and different sensors (channels). The 1989 joint E-SAR/DC-8 SAR calibration campaign at the DLR test site in Oberpfaffenhofen gave an opportunity for such an experiment, including cross-sensor and cross-track calibration. A basic requirement for successful cross-calibration is the stability of the SAR systems. The calibration parameters derived from different tracks were used to describe this stability. Criteria for cross-calibration performance are the agreement of sigma(o) values and the consistency of radar cross-sections of equally sized corner reflectors. C1 CTR NATL ETUD TELECOMMUN,CTR RECH PHYS ENVIRONN,F-92131 ISSY MOULINEAUX,FRANCE. JET PROP LAB,PASADENA,CA 91109. RP ZINK, M (reprint author), DLR,INST HOCHFREQUENZTECH,W-8031 OBERPFAFFENHOFEN,GERMANY. NR 17 TC 4 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 0196-2892 J9 IEEE T GEOSCI REMOTE JI IEEE Trans. Geosci. Remote Sensing PD JAN PY 1993 VL 31 IS 1 BP 237 EP 245 DI 10.1109/36.210463 PG 9 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA KY645 UT WOS:A1993KY64500026 ER PT J AU MADSEN, SN ZEBKER, HA MARTIN, J AF MADSEN, SN ZEBKER, HA MARTIN, J TI TOPOGRAPHIC MAPPING USING RADAR INTERFEROMETRY - PROCESSING TECHNIQUES SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article AB In the summer of 1991 the NASA DC-8 airborne synthetic aperture radar (SAR) system acquired data with the radar configured in a C-band across-track interferometer mode. The data were processed to generate rectified topographic maps. A new processing scheme was developed featuring motion compensation, absolute phase retrieval, and three-dimensional location. The new processor has been tested using data which were acquired with extreme aircraft motion so that performance could be evaluated under adverse conditions. The topographic maps generated by the radar were compared to Digital Elevation Models (DEM's) derived using conventional optical stereo techniques. In one region we measured rms elevation deviations which were less than the specified DEM accuracy, and in the region covered by the more accurate DEM we found errors varying from 2.2 m rms in relatively flat terrain up to 5.0 m in mountainous areas. The rms difference between radar and DEM elevations over the 6.5 km by 22 km area covered by the more accurate DEM was 3.6 m. RP MADSEN, SN (reprint author), JET PROP LAB,RADAR SCI & SYST STUDIES GRP,PASADENA,CA 91109, USA. NR 17 TC 157 Z9 182 U1 2 U2 12 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 1993 VL 31 IS 1 BP 246 EP 256 DI 10.1109/36.210464 PG 11 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA KY645 UT WOS:A1993KY64500027 ER PT J AU TANNER, AB SWIFT, CT AF TANNER, AB SWIFT, CT TI CALIBRATION OF A SYNTHETIC APERTURE RADIOMETER SO IEEE TRANSACTIONS ON GEOSCIENCE AND REMOTE SENSING LA English DT Article AB Calibration algorithms for a synthetic aperture microwave radiometer are presented. The calibration is geared to Earth remote sensing applications, and is demonstrated on an airborne prototype of thinned array imager. Two approaches to the system calibration are presented; the first utilizes commonly available reference brightness temperature scenes, such as open water, and the second utilizes data collected on the antenna range. Both algorithms yield spatial response information which is cast in matrix form and inverted to obtain the image reconstruction formula. Experimental results are examined, and errors in some reconstructed images are linked to the present prototype antenna design. Algorithms for improving the synthesized antenna pattern side lobe performance are also presented. In one solution, the pattern efficiency is optimized by minimizing the pattern outside a defined beam. In another solution, the patterns are matched to a desired model pattern by the method of least squared errors. Both techniques offer an attractive alternative to aperture weighting. C1 UNIV MASSACHUSETTS,DEPT ELECT & COMP ENGN,AMHERST,MA 01003. RP TANNER, AB (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 13 TC 81 Z9 93 U1 1 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 1993 VL 31 IS 1 BP 257 EP 267 DI 10.1109/36.210465 PG 11 WC Geochemistry & Geophysics; Engineering, Electrical & Electronic; Remote Sensing; Imaging Science & Photographic Technology SC Geochemistry & Geophysics; Engineering; Remote Sensing; Imaging Science & Photographic Technology GA KY645 UT WOS:A1993KY64500028 ER PT J AU BALDI, P VENKATESH, SS AF BALDI, P VENKATESH, SS TI RANDOM INTERACTIONS IN HIGHER-ORDER NEURAL NETWORKS SO IEEE TRANSACTIONS ON INFORMATION THEORY LA English DT Letter DE NEURAL NETWORKS; SPIN GLASSES; POLYNOMIAL THRESHOLD ELEMENTS; FIXED POINTS; LAPLACE METHOD ID ASSOCIATIVE MEMORY; CAPACITY; MODELS AB Recurrent networks of polynomial threshold elements with random symmetric interactions are studied. Precise asymptotic estimates are derived for the expected number of fixed points as a function of the margin of stability. In particular, it is shown that there is a critical range of margins of stability (depending on the degree of polynomial interaction) such that the expected number of fixed points with margins below the critical range grows exponentially with the number of nodes in the network, while the expected number of fixed points with margins above the critical range decreases exponentially with the number of nodes in the network. The random energy model is also briefly examined and links with higher order neural networks and higher order spin glass models made explicit. C1 UNIV PENN,DEPT ELECT ENGN,PHILADELPHIA,PA 19104. CALTECH,DIV BIOL,PASADENA,CA 91125. RP BALDI, P (reprint author), JET PROP LAB,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 18 TC 4 Z9 4 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 0018-9448 J9 IEEE T INFORM THEORY JI IEEE Trans. Inf. Theory PD JAN PY 1993 VL 39 IS 1 BP 274 EP 283 DI 10.1109/18.179374 PG 10 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA KH679 UT WOS:A1993KH67900039 ER PT J AU DIB, NI PONCHAK, GE KATEHI, LPB AF DIB, NI PONCHAK, GE KATEHI, LPB TI A THEORETICAL AND EXPERIMENTAL-STUDY OF COPLANAR WAVE-GUIDE SHUNT STUBS SO IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES LA English DT Article ID WAVE-GUIDE DISCONTINUITIES AB A comprehensive theoretical and experimental study of straight and bent coplanar waveguide (CPW) shunt stubs is presented. In the theoretical analysis, the CPW is assumed to be inside a cavity, while, the experiments are performed on open structures. For the analysis of CPW discontinuities with air-bridges, a hybrid technique has been developed which has been validated through extensive theoretical and experimental comparisons. Throughout this study, the effect of the cavity resonances on the behavior of the stubs with and without air-bridges is investigated. In addition, the encountered radiation loss due to the discontinuities is evaluated experimentally. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP DIB, NI (reprint author), UNIV MICHIGAN,RADIAT LAB,3228 EECS BLDG,ANN ARBOR,MI 48109, USA. RI Dib, Nihad/M-4918-2015; OI Dib, Nihad/0000-0002-2263-5512 NR 37 TC 13 Z9 13 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 0018-9480 J9 IEEE T MICROW THEORY JI IEEE Trans. Microw. Theory Tech. PD JAN PY 1993 VL 41 IS 1 BP 38 EP 44 DI 10.1109/22.210227 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA KX644 UT WOS:A1993KX64400006 ER PT J AU BUTLER, RW FINELLI, GB AF BUTLER, RW FINELLI, GB TI THE INFEASIBILITY OF QUANTIFYING THE RELIABILITY OF LIFE-CRITICAL REAL-TIME SOFTWARE SO IEEE TRANSACTIONS ON SOFTWARE ENGINEERING LA English DT Article; Proceedings Paper CT SIGSOFT 91 : CONF ON SOFTWARE FOR CRITICAL SYSTEMS CY DEC, 1991 CL NEW ORLEANS, LA SP ASSOC COMP MACHINERY DE DESIGN ERROR; LIFE-CRITICAL; SOFTWARE FAULT TOLERANCE; SOFTWARE RELIABILITY; ULTRARELIABILITY; VALIDATION AB This paper affirms that the quantification of life-critical software reliability is infeasible using statistical methods, whether these methods are applied to standard software or fault-tolerant software. The classical methods of estimating reliability are shown to lead to exorbitant amounts of testing when applied to life-critical software. Reliability growth models are examined and also shown to be incapable of overcoming the need for excessive amounts of testing. The key assumption of software fault tolerance separately programmed versions fail independently-is shown to be problematic. This assumption cannot be justified by experimentation in the ultrareliability region, and subjective arguments in its favor are not sufficiently strong to justify it as an axiom. Also, the implications of the recent multiversion software experiments support this affirmation. RP BUTLER, RW (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23665, USA. NR 16 TC 117 Z9 126 U1 0 U2 6 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0098-5589 J9 IEEE T SOFTWARE ENG JI IEEE Trans. Softw. Eng. PD JAN PY 1993 VL 19 IS 1 BP 3 EP 12 DI 10.1109/32.210303 PG 10 WC Computer Science, Software Engineering; Engineering, Electrical & Electronic SC Computer Science; Engineering GA KX388 UT WOS:A1993KX38800002 ER PT J AU LUMELSKY, VJ CHEUNG, E AF LUMELSKY, VJ CHEUNG, E TI REAL-TIME COLLISION AVOIDANCE IN TELEOPERATED WHOLE-SENSITIVE ROBOT ARM MANIPULATORS SO IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS LA English DT Article AB In traditional teleoperation systems, the human operator is saddled with two distinct tasks: 1) moving the robot arm to its desired position, and 2) avoiding obstacles that can obstruct the arm motion. The current robot teleoperation research concentrates on providing the operator with as much input information about the task site as possible using, for example, stereo vision or contact force feedback. These methods presume that the operator is capable of planning motion for the entire body of the robot in a cluttered environment. Studies show, however, that the operators, first, cannot address both tasks in real time, and second, are not good at generating collision-free motion in a complex environment. Recent results in sensor-based motion planning suggest that the collision avoidance task can be handled automatically, thus freeing the operator for global control. To this end, it is also proposed to use whole-sensitive arm manipulators whose whole bodies are covered with a sensitive skin sensor to detect nearby objects. The data from the skin is processed by motion planning algorithms, to avoid collisions for the entire arm body in an unknown or time-varving environment. The motion of the operator-controlled master arm is either repeated faithfully by the slave arm, or, to avoid collisions, is used as general guidance. In the latter case the slave arm attempts to be as close as possible to the positions commanded by the operator, without jeopardizing its safety. The result is an efficient, safe and robust hybrid system in which integration of control by the operator and the automatic system is done transparently and in real time. C1 NASA,GODDARD SPACE FLIGHT CTR,ROBOT LAB,GREENBELT,MD 20771. RP LUMELSKY, VJ (reprint author), UNIV WISCONSIN,DEPT MECH ENGN,MADISON,WI 53706, USA. NR 11 TC 93 Z9 96 U1 3 U2 10 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9472 J9 IEEE T SYST MAN CYB JI IEEE Trans. Syst. Man Cybern. PD JAN-FEB PY 1993 VL 23 IS 1 BP 194 EP 203 DI 10.1109/21.214777 PG 10 WC Computer Science, Cybernetics; Engineering, Electrical & Electronic SC Computer Science; Engineering GA LC009 UT WOS:A1993LC00900015 ER PT J AU JAIN, A RODRIGUEZ, G AF JAIN, A RODRIGUEZ, G TI LINEARIZATION OF MANIPULATOR DYNAMICS USING SPATIAL OPERATORS SO IEEE TRANSACTIONS ON SYSTEMS MAN AND CYBERNETICS LA English DT Note ID ROBOT MANIPULATORS; MODELS AB Linearized dynamics models for manipulators are useful in robot analysis, motion planning, and control applications. Techniques from the spatial operator algebra are used to obtain closed form operator expressions for two types of linearized dynamics models, the linearized inverse and forward dynamics models. Spatially recursive algorithms of O(n) and O(n2) complexity for the computation of the perturbation vector and coefficient matrices for the linearized inverse dynamics model (LIDM) are developed first. Subsequently, operator factorization and inversion identities are used to develop corresponding closed-form expressions for the linearized forward dynamics model (LFDM). Once again, these are used to develop algorithms of O(n) and O(n2) complexity for the computation of the perturbation vector and the coefficient matrices. The algorithms for the LFDM do not require the explicit computation of the mass matrix nor its numerical inversion and are also of lower complexity than the conventional O(n3) algorithms. RP JAIN, A (reprint author), JET PROP LAB,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 15 TC 8 Z9 10 U1 2 U2 6 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9472 J9 IEEE T SYST MAN CYB JI IEEE Trans. Syst. Man Cybern. PD JAN-FEB PY 1993 VL 23 IS 1 BP 239 EP 248 DI 10.1109/21.214783 PG 10 WC Computer Science, Cybernetics; Engineering, Electrical & Electronic SC Computer Science; Engineering GA LC009 UT WOS:A1993LC00900021 ER PT J AU STERLING, TL MACDONALD, MJ AF STERLING, TL MACDONALD, MJ TI THE REALITIES OF HIGH-PERFORMANCE COMPUTING AND DATAFLOWS ROLE IN IT - LESSONS FROM THE NASA HPCC PROGRAM SO IFIP TRANSACTIONS A-COMPUTER SCIENCE AND TECHNOLOGY LA English DT Article DE MULTIPLE DATA STREAM ARCHITECTURES (MULTIPROCESSORS); CONCURRENT PROGRAMMING; PHYSICAL SCIENCES AND ENGINEERING AB Dataflow addresses critical questions that would seem to be the inhibiting factors to successful exploitation of parallel processing. Yet, as the high performance computing community launches a major new National initiative to harness the potential of massively parallel processing and deliver useful Teraflops performance capacity into the hands of applications scientists, the immediate role of dataflow concepts and architecture appears uncertain. This paper reflects on the realities of current trends in supercomputing based on the experience of the NASA High Performance Computing and Communications Program. Included are findings from the recent Pasadena Workshop on System Software and Tools for High Performance Computing Environments. From this perspective, the disparity between the perceived needs of the high performance computing community and primary contributions of the dataflow research community is presented. Consideration is given to ways in which the elegance of the dataflow model can be brought to bear on the real-world evolution of future generation supercomputing. RP STERLING, TL (reprint author), UNIV SPACE RES ASSOC,CESDIS,NASA,HIGH PERFORMANCE COMP & COMMUN PROGRAM,WASHINGTON,DC, USA. NR 9 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-5473 J9 IFIP TRANS A JI IFIP Trans. A-Comp. Sci. Technol. PY 1993 VL 23 BP 165 EP 176 PG 12 WC Computer Science, Information Systems; Computer Science, Theory & Methods SC Computer Science GA LM028 UT WOS:A1993LM02800015 ER PT J AU GEORGE, JA SCHLECHT, LE AF GEORGE, JA SCHLECHT, LE TI THE NAS HIERARCHICAL NETWORK MANAGEMENT-SYSTEM SO IFIP TRANSACTIONS C-COMMUNICATION SYSTEMS LA English DT Article DE MANAGEMENT OF COMPUTING AND INFORMATION SYSTEMS, GENERAL; DISTRIBUTED SYSTEMS; USER INTERFACES AB This is a case study of the development of a network management system for the Numerical Aerodynamics Simulation facility at NASA Ames Research Center. Issues relevant to IP network management am identified and examined. Experience has shown that traditional monolithic network management systems cannot address all of these issues in a large network; in many cases, a distributed, hierarchical system is more suited to this task. With these issues in mind, a scalable architecture for monitoring large networks is presented: the Hierarchical Network Management System. Methods for gathering, storing, and transporting network information within this system are described. A user interface incorporating design principles for displaying and managing large networks is also presented. We expect that the presentation of this architecture will be of value to other members of the Internet community who would participate in the development of an open standard for distributed network management. RP GEORGE, JA (reprint author), NASA, AMES RES CTR, COMP SCI CORP, M-S 258-6, MOFFETT FIELD, CA 94086 USA. NR 8 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-549X J9 IFIP TRANS C JI IFIP Trans. C-Commun. Syst. PY 1993 VL 12 BP 301 EP 312 PG 12 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA LJ990 UT WOS:A1993LJ99000024 ER PT J AU JOHNSON, MJ AF JOHNSON, MJ TI USING HIGH-PERFORMANCE NETWORKS TO ENABLE COMPUTATIONAL AEROSCIENCES APPLICATIONS SO IFIP TRANSACTIONS C-COMMUNICATION SYSTEMS LA English DT Article DE COMPUTER-COMMUNICATION NETWORKS; MISCELLANEOUS; COMPUTER APPLICATIONS; PHYSICAL SCIENCES AND ENGINEERING AB One component of the U.S. Federal High Performance Computing and Communications Program (HPCCP) is the establishment of a gigabit network to provide a communications infrastructure for researchers across the nation. This gigabit network will provide new services and capabilities, in addition to increased bandwidth, to enable future applications. An understanding of these applications is necessary to guide the development of the gigabit network and other high-performance networks of the future. In this paper we focus on computational aerosciences applications run remotely using the Numerical Aerodynamic Simulation (NAS) facility located at NASA Ames Research Center. We characterize these applications in terms of network-related parameters and relate user experiences that reveal limitations imposed by the current wide-area networking infrastructure. Then we investigate how the development of a nationwide gigabit network would enable users of the NAS facility to work in new, more productive ways. C1 NASA,AMES RES CTR,RIACS,MOFFETT FIELD,CA 94035. NR 10 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0926-549X J9 IFIP TRANS C JI IFIP Trans. C-Commun. Syst. PY 1993 VL 9 BP 137 EP 152 PG 16 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA LH419 UT WOS:A1993LH41900010 ER PT B AU IMHOFF, ML AF IMHOFF, ML BE Fujimura, S TI RADAR BACKSCATTER BIOMASS SATURATION - OBSERVATIONS AND IMPLICATIONS FOR GLOBAL BIOMASS ASSESSMENT SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,BIOSPHER SCI BRANCH,GREENBELT,MD 20771. NR 0 TC 0 Z9 1 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 43 EP 45 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00015 ER PT B AU RIGNOT, E WILLIAMS, C WAY, JB AF RIGNOT, E WILLIAMS, C WAY, JB BE Fujimura, S TI MAPPING OF TAIGA FOREST UNITS USING AIRSAR DATA AND OR OPTICAL-DATA, AND RETRIEVAL OF FOREST PARAMETERS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. RI Rignot, Eric/A-4560-2014 OI Rignot, Eric/0000-0002-3366-0481 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 49 EP 51 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00017 ER PT B AU WAY, J RIGNOT, E MCDONALD, K VIERECK, L WILLIAMS, C ADAMS, P PAYNE, C WOOD, W AF WAY, J RIGNOT, E MCDONALD, K VIERECK, L WILLIAMS, C ADAMS, P PAYNE, C WOOD, W BE Fujimura, S TI MONITORING SEASONAL CHANGE IN TAIGA FORESTS USING ERS-1 SAR DATA SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. RI Rignot, Eric/A-4560-2014 OI Rignot, Eric/0000-0002-3366-0481 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 52 EP 52 PG 1 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00018 ER PT B AU MCDONALD, KC AF MCDONALD, KC BE Fujimura, S TI A SYNOPSIS OF MICROWAVE REMOTE-SENSING INVESTIGATIONS PLANNED FOR BORES SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 53 EP 53 PG 1 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00019 ER PT B AU RAGHAVAN, R VIVEKANANDAN, J AF RAGHAVAN, R VIVEKANANDAN, J BE Fujimura, S TI RETRIEVAL OF STORM MICROPHYSICS USING K-ALPHA BAND RADAR OBSERVATIONS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,IGCRE,HUNTSVILLE,AL 35812. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 91 EP 93 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00030 ER PT B AU SUN, GQ RANSON, KJ AF SUN, GQ RANSON, KJ BE Fujimura, S TI MODELING OF RADAR RESPONSES TO FOREST PHYSICAL PARAMETERS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE FOREST PHYSICAL PARAMETERS; RADAR BACKSCATTER MODEL C1 NASA,GODDARD SPACE FLIGHT CTR,BIOSPHER SCI BRANCH,GREENBELT,MD 20771. RI Ranson, Kenneth/G-2446-2012 OI Ranson, Kenneth/0000-0003-3806-7270 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 384 EP 386 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00115 ER PT B AU WAY, J BACHMAN, JE PAIGE, DA AF WAY, J BACHMAN, JE PAIGE, DA BE Fujimura, S TI SENSITIVITY TO FOREST BIOMASS BASED ON ANALYSIS OF SCATTERING MECHANISM SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Meeting Abstract CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 387 EP 387 PG 1 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00116 ER PT B AU KUMMEROW, C AF KUMMEROW, C BE Fujimura, S TI TRMM RAINFALL ALGORITHM DEVELOPMENT SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 419 EP 420 PG 2 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00126 ER PT B AU HAN, D AF HAN, D BE Fujimura, S TI TROPICAL RAINFALL MEASURING MISSION SCIENCE DATA AND INFORMATION-SYSTEM SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 421 EP 421 PG 1 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00127 ER PT B AU DRINKWATER, MR HOSSEINMOSTAFA, R DIERKING, W AF DRINKWATER, MR HOSSEINMOSTAFA, R DIERKING, W BE Fujimura, S TI C-BAND MICROWAVE BACKSCATTER OF SEA-ICE IN THE WEDDELL SEA DURING THE WINTER OF 1992 SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. OI Drinkwater, Mark/0000-0002-9250-3806 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 446 EP 448 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00136 ER PT B AU LIU, AK PENG, CY AF LIU, AK PENG, CY BE Fujimura, S TI SAR APPLICATION FOR OCEAN EDDY MONITORING SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,OCEANS & ICE BRANCH,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 547 EP 549 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00166 ER PT B AU IM, E JOHNSON, WTK HENSLEY, S AF IM, E JOHNSON, WTK HENSLEY, S BE Fujimura, S TI CASSINI RADAR FOR REMOTE-SENSING OF TITAN - DESIGN CONSIDERATIONS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 555 EP 557 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00168 ER PT B AU HENSLEY, S IM, E JOHNSON, WTK AF HENSLEY, S IM, E JOHNSON, WTK BE Fujimura, S TI SAR AMBIGUITY STUDY FOR THE CASSINI RADAR SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,RADAR SCI & ENGN SECT,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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 563 EP 565 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00170 ER PT B AU WAY, J AF WAY, J BE Fujimura, S TI THE EOS SAR MISSION - A NEW APPROACH SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 566 EP 567 PG 2 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00171 ER PT B AU KARAM, MA LEVINE, DM AMAR, F FUNG, AK MOUGIN, E LOPES, A AF KARAM, MA LEVINE, DM AMAR, F FUNG, AK MOUGIN, E LOPES, A BE Fujimura, S TI UNDERSTANDING THE RELATION BETWEEN THE FOREST BIOMASS AND THE RADAR BACKSCATTERED SIGNALS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. NR 0 TC 2 Z9 2 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 573 EP 575 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00173 ER PT B AU MOGHADDAM, M DURDEN, S ZEBKER, H AF MOGHADDAM, M DURDEN, S ZEBKER, H BE Fujimura, S TI EFFECTS OF ENVIRONMENTAL-CHANGE ON RADAR BACKSCATTER IN THE OREGON TRANSECT SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 580 EP 582 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00175 ER PT B AU MOGHADDAM, M SAATCHI, S AF MOGHADDAM, M SAATCHI, S BE Fujimura, S TI AN INVERSION ALGORITHM APPLIED TO SAR DATA TO RETRIEVE SURFACE PARAMETERS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 587 EP 589 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00177 ER PT B AU WAY, J EVANS, D ELACHI, C AF WAY, J EVANS, D ELACHI, C BE Fujimura, S TI THE SIR-C X-SAR MISSION SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 593 EP 593 PG 1 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00178 ER PT B AU WANG, JR TENG, WL PARDIPURAM, R RAO, KS AF WANG, JR TENG, WL PARDIPURAM, R RAO, KS BE Fujimura, S TI THE EFFECT OF TOPOGRAPHY ON THE SAR MEASUREMENTS OF SURFACE SOIL-MOISTURE SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 598 EP 600 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00181 ER PT B AU SHORT, DA THIELE, OW AF SHORT, DA THIELE, OW BE Fujimura, S TI TRMM VALIDATION PROGRAM SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Meeting Abstract CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 614 EP 614 PG 1 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00186 ER PT B AU THEON, JS AF THEON, JS BE Fujimura, S TI THE TRMM FOLLOW-ON MISSION SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,WASHINGTON,DC 20546. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 621 EP 622 PG 2 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00189 ER PT B AU STETINA, F FRIEDMAN, DS KRABILL, WB KUNZ, TD HILL, JM DIROSA, D MICHAELS, DL SCHMIDT, JA AF STETINA, F FRIEDMAN, DS KRABILL, WB KUNZ, TD HILL, JM DIROSA, D MICHAELS, DL SCHMIDT, JA BE Fujimura, S TI PROGRESS ON THE AIRBORNE LIDAR TOPOGRAPHIC MAPPING SYSTEM (ALTMS) SENSOR SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE LASER; LIDAR; TOPOGRAPHY; MAPPING C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 656 EP 658 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00198 ER PT B AU FREEMAN, A AF FREEMAN, A BE Fujimura, S TI THE EFFECTS OF NOISE ON POLARIMETRIC SAR DATA SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 4 Z9 4 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 799 EP 802 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00237 ER PT B AU LI, F DURDEN, SL IM, E TANNER, A RICKETTS, W WILSON, W MENEGHINI, R IGUCHI, T NAKAMURA, K AF LI, F DURDEN, SL IM, E TANNER, A RICKETTS, W WILSON, W MENEGHINI, R IGUCHI, T NAKAMURA, K BE Fujimura, S TI AIRBORNE RAIN MAPPING RADAR AND PRELIMINARY-OBSERVATIONS DURING TOGA-COARE SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 1 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 832 EP 834 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00245 ER PT B AU HADDAD, ZS IM, E AF HADDAD, ZS IM, E BE Fujimura, S TI MAXIMUM-LIKELIHOOD-ESTIMATION OF SURFACE AND RAIN BACKSCATTERING PARAMETERS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 835 EP 837 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00246 ER PT B AU COMISO, JC AF COMISO, JC BE Fujimura, S TI ICE REGIMES IN THE ANTARCTIC AND THE ARCTIC USING SATELLITE MULTICHANNEL PASSIVE MICROWAVE DATA SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE SEA ICE; ICE REGIMES; ICE TYPES; SSM/I C1 NASA,GODDARD SPACE FLIGHT CTR,HYDROSPHER PROC LAB,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 843 EP 846 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00248 ER PT B AU BROWELL, EV AF BROWELL, EV BE Fujimura, S TI AIRBORNE LIDAR MEASUREMENTS OF OZONE, WATER-VAPOR, AND AEROSOLS IN LARGE-SCALE ATMOSPHERIC STUDIES SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE LIDAR; OZONE; WATER VAPOR; AEROSOLS C1 NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23665. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 865 EP 868 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00255 ER PT B AU FREEMAN, A ALVES, M WILLIAMS, J AF FREEMAN, A ALVES, M WILLIAMS, J BE Fujimura, S TI CALIBRATION RESULTS FOR J-ERS-1 SAR DATA PRODUCED BY THE ALASKA SAR FACILITY SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 965 EP 967 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00283 ER PT B AU WANG, JR MELFI, SH RACETTE, P WHITEMEN, DN KAKAR, RK FERRARE, RA EVANS, KD SCHMIDLIN, FJ AF WANG, JR MELFI, SH RACETTE, P WHITEMEN, DN KAKAR, RK FERRARE, RA EVANS, KD SCHMIDLIN, FJ BE Fujimura, S TI SIMULTANEOUS MEASUREMENTS OF ATMOSPHERIC WATER-VAPOR WITH MIR, RAMAN LIDAR AND RAWINSONDES SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1061 EP 1063 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00307 ER PT B AU MARTONCHIK, JV DANIELSON, ED DINER, DJ BRUEGGE, CJ AF MARTONCHIK, JV DANIELSON, ED DINER, DJ BRUEGGE, CJ BE Fujimura, S TI RETRIEVAL OF SURFACE DIRECTIONAL REFLECTANCE AND HEMISPHERICAL ALBEDO USING MULTI-ANGLE MEASUREMENTS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1103 EP 1106 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00319 ER PT B AU SCHMIDT, EO KRATZ, DP WIELICKI, BA AF SCHMIDT, EO KRATZ, DP WIELICKI, BA BE Fujimura, S TI EFFECTS OF CIRRUS CLOUDS AND THE ATMOSPHERE OVER LAND AND OCEAN SURFACES SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE CORRELATED K-DISTRIBUTION; MULTILAYER CIRRUS C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1107 EP 1112 PG 6 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00320 ER PT B AU LEUNG, K CHU, A WONG, C CHU, E JIN, M AF LEUNG, K CHU, A WONG, C CHU, E JIN, M BE Fujimura, S TI THE MAGELLAN UNIX-BASED SAR PROCESSOR SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE SAR 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1121 EP 1124 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00323 ER PT B AU JIN, MY CHENG, F CHEN, M AF JIN, MY CHENG, F CHEN, M BE Fujimura, S TI CHIRP SCALING ALGORITHMS FOR SAR PROCESSING SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE INTERPOLATOR; SAMPLING RATE; VALID SAMPLES; SAR PROCESSING; RANGE-DOPPLER SPECTRUM; NONLINEAR CHIRP SCALING 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1169 EP 1172 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00336 ER PT B AU LEUNG, K JIN, M AF LEUNG, K JIN, M BE Fujimura, S TI PROCESSING OF SCAN SAR MODE DATA FOR RADARSAT SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE SCAN SAR 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1185 EP 1188 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00341 ER PT B AU RANSON, KJ SUN, GQ AF RANSON, KJ SUN, GQ BE Fujimura, S TI RETRIEVAL OF FOREST SPATIAL PATTERN FROM SAR IMAGES SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE FOREST CLASSIFICATION; SPATIAL STRUCTURE C1 NASA,GODDARD SPACE FLIGHT CTR,BIOSPHER SCI BRANCH,GREENBELT,MD 20771. RI Ranson, Kenneth/G-2446-2012 OI Ranson, Kenneth/0000-0003-3806-7270 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1213 EP 1215 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00349 ER PT B AU WU, ST AF WU, ST BE Fujimura, S TI P-BAND, L-BAND AND C-BAND POLARIMETRIC RADAR MEASUREMENTS OF COASTAL ZONE FOREST AND OTHER SURFACE COVERS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1219 EP 1221 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00351 ER PT B AU WU, S SPENCER, R HOOD, R AF WU, S SPENCER, R HOOD, R BE Fujimura, S TI A PRELIMINARY-REPORT ON ADVANCED MICROWAVE PRECIPITATION RADIOMETER MEASUREMENTS OF TROPICAL RAINFALL OF CYCLONE OLIVER SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1235 EP 1237 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00356 ER PT B AU RIGNOT, E JEZEK, K VANZYL, JJ DRINKWATER, MR LOU, YL AF RIGNOT, E JEZEK, K VANZYL, JJ DRINKWATER, MR LOU, YL BE Fujimura, S TI RADAR SCATTERING FROM SNOW FACIES OF THE GREENLAND ICE-SHEET - RESULTS FROM THE AIRSAR 1991 CAMPAIGN SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. RI Rignot, Eric/A-4560-2014; OI Rignot, Eric/0000-0002-3366-0481; Drinkwater, Mark/0000-0002-9250-3806 NR 0 TC 1 Z9 1 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1270 EP 1272 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00367 ER PT B AU TOLL, DL AF TOLL, DL BE Fujimura, S TI ESTIMATION OF A REGIONAL LAND-SURFACE ALBEDO USING NARROW-BAND SATELLITE RADIANCE DATA SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,HYDROL SCI BRANCH,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1286 EP 1288 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00371 ER PT B AU GREEN, RO CONEL, JE SHIMADA, M NAKAI, M VANDENBOSCH, J AF GREEN, RO CONEL, JE SHIMADA, M NAKAI, M VANDENBOSCH, J BE Fujimura, S TI ON-ORBIT CALIBRATION OF THE JAPANESE EARTH RESOURCES SATELLITE-1 OPTICAL SENSOR USING THE AIRBORNE VISIBLE-INFRARED IMAGING SPECTROMETER SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1312 EP 1314 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00379 ER PT B AU CHAPPELLE, EW CORP, LA KIM, MS MCMURTREY, JE AF CHAPPELLE, EW CORP, LA KIM, MS MCMURTREY, JE BE Fujimura, S TI SIGNIFICANCE OF THE BLUE BAND IN THE LASER-INDUCED FLUORESCENCE (LIF) SPECTRA OF GREEN VEGETATION SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE LASER INDUCED FLUORESCENCE (LIF); NADPH; VITAMIN-K(1) AND XANTHOPHYLL C1 NASA,GODDARD SPACE FLIGHT CTR,TERR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 0 Z9 1 U1 1 U2 3 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1333 EP 1336 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00384 ER PT B AU LEVINE, DM GATLIN, JA MARUSCHUK, JG AF LEVINE, DM GATLIN, JA MARUSCHUK, JG BE Fujimura, S TI DEVELOPMENT OF A 2-DIMENSIONAL SYNTHETIC-APERTURE MICROWAVE RADIOMETER SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1441 EP 1443 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00413 ER PT B AU RIGNOT, E WAY, JB AF RIGNOT, E WAY, JB BE Fujimura, S TI MONITORING FREEZE-THAW ALONG NORTH-SOUTH ALASKAN TRANSECTS USING ERS-1 SAR SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV C1 JET PROP LAB,PASADENA,CA 91109. RI Rignot, Eric/A-4560-2014 OI Rignot, Eric/0000-0002-3366-0481 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1453 EP 1455 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00417 ER PT B AU GERVIN, JC RAGAN, RM AF GERVIN, JC RAGAN, RM BE Fujimura, S TI IDENTIFYING ROADS AND HOUSES FROM SCANNED AERIAL-PHOTOGRAPHY AND COMBINING THEM WITH TIGER AND DIGITAL TERRAIN DATA OF SUBURBAN AREAS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE AERIAL PHOTOGRAPHY; IMAGE PROCESSING; ROAD DELINEATION; HOUSE IDENTIFICATION; TIGER LINE FILES; DEM C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1550 EP 1553 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00444 ER PT B AU GLAZMAN, RE GREYSUKH, A AF GLAZMAN, RE GREYSUKH, A BE Fujimura, S TI SATELLITE ALTIMETER MEASUREMENTS OF SURFACE WIND SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1567 EP 1569 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00449 ER PT B AU GLAZMAN, RE GREYSUKH, A ZLOTNICKI, V AF GLAZMAN, RE GREYSUKH, A ZLOTNICKI, V BE Fujimura, S TI GEOPHYSICAL MODEL FUNCTIONS FOR THE SEA-STATE BIAS IN SATELLITE ALTIMETRY SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1577 EP 1579 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00452 ER PT B AU VERMILLION, C STETINA, F CORONADO, P MAHONEY, R SHAFFER, G LUNSFORD, A AF VERMILLION, C STETINA, F CORONADO, P MAHONEY, R SHAFFER, G LUNSFORD, A BE Fujimura, S TI A TIROS RECEIVING AND ANALYSIS SYSTEM TO AUTOMATICALLY CREATE IMAGE PRODUCTS FOR ENVIRONMENTAL MONITORING AND MANAGEMENT SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE REMOTE SENSING; VEGETATION INDEX; SNOW; ICE; CLOUD MASKING; FOREST FIRES; SATELLITE METEOROLOGY C1 NASA,GODDARD SPACE FLIGHT CTR,INT DATA SYST OFF,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1665 EP 1667 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00476 ER PT B AU JIN, MY CHEN, M AF JIN, MY CHEN, M BE Fujimura, S TI ANALYSIS AND SIMULATION FOR A SPOTLIGHT-MODE AIRCRAFT SAR IN CIRCULAR FLIGHT PATH SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE SAR; SPOTLIGHT; RESOLUTION; PRF; TIME-BANDWIDTH PRODUCT; REFERENCE FUNCTION; PROCESSING ALGORITHM 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1777 EP 1780 PG 4 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00508 ER PT B AU LEWICKI, S CHODAS, P LEE, M DEJONG, E AF LEWICKI, S CHODAS, P LEE, M DEJONG, E BE Fujimura, S TI STEREO PROCESSING OF MAGELLAN SAR IMAGERY PERFORMED ON A TRANSPUTER ARCHITECTURE SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE STEREO PROCESSING; MAGELLAN SAR; SPACECRAFT EPHEMERIS 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 1786 EP 1788 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00511 ER PT B AU GOLTZ, SM SMITH, JA AF GOLTZ, SM SMITH, JA BE Fujimura, S TI THERMAL MODELING APPLICATIONS TO FOREST CANOPIES SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE TEMPERATURE; LATENT HEAT; RADIOSITY; SENSIBLE HEAT C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 2057 EP 2058 PG 2 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00586 ER PT B AU MCDONALD, KC ZIMMERMANN, R OREN, R WAY, J AF MCDONALD, KC ZIMMERMANN, R OREN, R WAY, J BE Fujimura, S TI HYDROLOGIC AND DIELECTRIC-PROPERTIES OF WOODY PLANT-TISSUE - IMPLICATIONS FOR REMOTE-SENSING OF CANOPY WATER STATUS SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 2062 EP 2062 PG 1 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00588 ER PT B AU NORIKANE, L FREEMAN, A AF NORIKANE, L FREEMAN, A BE Fujimura, S TI MACSIGMA0 - SOFTWARE FOR SAR IMAGE DISPLAY AND ANALYSIS ON THE MACINTOSH SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV DE SYNTHETIC APERTURE RADAR; MACINTOSH; ANALYSIS 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 2108 EP 2110 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00603 ER PT B AU CUDDY, D CHEN, MJ BICKNELL, T AF CUDDY, D CHEN, MJ BICKNELL, T BE Fujimura, S TI ALASKA SAR PROCESSOR IMPLEMENTATION FOR JERS-1 SO IGARSS'93: BETTER UNDERSTANDING OF EARTH ENVIRONMENT, VOLS I-IV LA English DT Proceedings Paper CT 13th Annual International Geoscience and Remote Sensing Symposium (IGARSS 93) CY AUG 18-21, 1993 CL KOGAKUIN UNIV, TOKYO, JAPAN SP IEEE, UNION RADIO SCI INT, INST ELECTR INFORMAT & COMMUN ENGINEERS JAPAN HO KOGAKUIN UNIV 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 0-7803-1240-6 J9 INT GEOSCI REMOTE SE PY 1993 BP 2130 EP 2132 PG 3 WC Engineering, Electrical & Electronic; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing SC Engineering; Forestry; Meteorology & Atmospheric Sciences; Oceanography; Remote Sensing GA BA46R UT WOS:A1993BA46R00609 ER PT B AU SCHWUTTKE, UM QUAN, AG AF SCHWUTTKE, UM QUAN, AG BE Bajcsy, R TI ENHANCING PERFORMANCE OF COOPERATING AGENTS IN REAL-TIME DIAGNOSTIC SYSTEMS SO IJCAI-93, VOLS 1 AND 2: PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 13th International Joint Conference on Artificial Intelligence (IJCAI-93) CY AUG 28-SEP 03, 1993 CL CHAMBERY, FRANCE SP INT JOINT CONF ARTIFICIAL INTELLIGENCE INC, ASSOC FRANCAISE INTELLIGENCE ARTIFICIELLE C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MORGAN KAUFMANN PUB INC PI SAN MATEO PA 2929 CAMPUS DRIVE, SAN MATEO, CA 94403 BN 1-55860-300-X PY 1993 BP 332 EP 337 PG 6 WC Computer Science, Artificial Intelligence SC Computer Science GA BA18B UT WOS:A1993BA18B00047 ER PT B AU MINTON, S AF MINTON, S BE Bajcsy, R TI AN ANALYTIC LEARNING-SYSTEM FOR SPECIALIZING HEURISTICS SO IJCAI-93, VOLS 1 AND 2: PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 13th International Joint Conference on Artificial Intelligence (IJCAI-93) CY AUG 28-SEP 03, 1993 CL CHAMBERY, FRANCE SP INT JOINT CONF ARTIFICIAL INTELLIGENCE INC, ASSOC FRANCAISE INTELLIGENCE ARTIFICIELLE C1 NASA,AMES RES CTR,AI RES BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 2 Z9 2 U1 0 U2 0 PU MORGAN KAUFMANN PUB INC PI SAN MATEO PA 2929 CAMPUS DRIVE, SAN MATEO, CA 94403 BN 1-55860-300-X PY 1993 BP 922 EP 928 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BA18B UT WOS:A1993BA18B00127 ER PT B AU FAYYAD, UM IRANI, KB AF FAYYAD, UM IRANI, KB BE Bajcsy, R TI MULTI-INTERVAL DISCRETIZATION OF CONTINUOUS-VALUED ATTRIBUTES FOR CLASSIFICATION LEARNING SO IJCAI-93, VOLS 1 AND 2: PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 13th International Joint Conference on Artificial Intelligence (IJCAI-93) CY AUG 28-SEP 03, 1993 CL CHAMBERY, FRANCE SP INT JOINT CONF ARTIFICIAL INTELLIGENCE INC, ASSOC FRANCAISE INTELLIGENCE ARTIFICIELLE C1 JET PROP LAB,AI GROUP,PASADENA,CA 91109. NR 0 TC 86 Z9 90 U1 1 U2 20 PU MORGAN KAUFMANN PUB INC PI SAN MATEO PA 2929 CAMPUS DRIVE, SAN MATEO, CA 94403 BN 1-55860-300-X PY 1993 BP 1022 EP 1027 PG 6 WC Computer Science, Artificial Intelligence SC Computer Science GA BA18B UT WOS:A1993BA18B00141 ER PT B AU LAIRD, P SAUL, R AF LAIRD, P SAUL, R BE Bajcsy, R TI SEQUENCE EXTRAPOLATION SO IJCAI-93, VOLS 1 AND 2: PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 13th International Joint Conference on Artificial Intelligence (IJCAI-93) CY AUG 28-SEP 03, 1993 CL CHAMBERY, FRANCE SP INT JOINT CONF ARTIFICIAL INTELLIGENCE INC, ASSOC FRANCAISE INTELLIGENCE ARTIFICIELLE C1 NASA,AMES RES CTR,AI RES BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MORGAN KAUFMANN PUB INC PI SAN MATEO PA 2929 CAMPUS DRIVE, SAN MATEO, CA 94403 BN 1-55860-300-X PY 1993 BP 1120 EP 1127 PG 8 WC Computer Science, Artificial Intelligence SC Computer Science GA BA18B UT WOS:A1993BA18B00155 ER PT B AU BAUDIN, C UNDERWOOD, JG BAYA, V AF BAUDIN, C UNDERWOOD, JG BAYA, V BE Bajcsy, R TI USING DEVICE MODELS TO FACILITATE THE RETRIEVAL OF MULTIMEDIA DESIGN INFORMATION SO IJCAI-93, VOLS 1 AND 2: PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 13th International Joint Conference on Artificial Intelligence (IJCAI-93) CY AUG 28-SEP 03, 1993 CL CHAMBERY, FRANCE SP INT JOINT CONF ARTIFICIAL INTELLIGENCE INC, ASSOC FRANCAISE INTELLIGENCE ARTIFICIELLE C1 NASA,AMES RES CTR,AI RES BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MORGAN KAUFMANN PUB INC PI SAN MATEO PA 2929 CAMPUS DRIVE, SAN MATEO, CA 94403 BN 1-55860-300-X PY 1993 BP 1237 EP 1243 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BA18B UT WOS:A1993BA18B00171 ER PT B AU DRUMMOND, M SWANSON, K BRESINA, J LEVINSON, R AF DRUMMOND, M SWANSON, K BRESINA, J LEVINSON, R BE Bajcsy, R TI REACTION 1ST SEARCH SO IJCAI-93, VOLS 1 AND 2: PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 13th International Joint Conference on Artificial Intelligence (IJCAI-93) CY AUG 28-SEP 03, 1993 CL CHAMBERY, FRANCE SP INT JOINT CONF ARTIFICIAL INTELLIGENCE INC, ASSOC FRANCAISE INTELLIGENCE ARTIFICIELLE C1 NASA,AMES RES CTR,AI RES BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MORGAN KAUFMANN PUB INC PI SAN MATEO PA 2929 CAMPUS DRIVE, SAN MATEO, CA 94403 BN 1-55860-300-X PY 1993 BP 1408 EP 1414 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BA18B UT WOS:A1993BA18B00195 ER PT B AU ZWEBEN, M DAVIS, E DAUN, B DEALE, M AF ZWEBEN, M DAVIS, E DAUN, B DEALE, M BE Bajcsy, R TI INFORMEDNESS VS COMPUATATIONAL COST OF HEURISTICS IN ITERATIVE REPAIR SCHEDULING SO IJCAI-93, VOLS 1 AND 2: PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL JOINT CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 13th International Joint Conference on Artificial Intelligence (IJCAI-93) CY AUG 28-SEP 03, 1993 CL CHAMBERY, FRANCE SP INT JOINT CONF ARTIFICIAL INTELLIGENCE INC, ASSOC FRANCAISE INTELLIGENCE ARTIFICIELLE C1 NASA,AMES RES CTR,ARTIFICIAL INTELLIGENCE RES BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MORGAN KAUFMANN PUB INC PI SAN MATEO PA 2929 CAMPUS DRIVE, SAN MATEO, CA 94403 BN 1-55860-300-X PY 1993 BP 1416 EP 1422 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BA18B UT WOS:A1993BA18B00196 ER PT B AU LEE, S PARK, J AF LEE, S PARK, J GP JAPANESE NEURAL NETWORK SOC TI DUAL-MODE DYNAMICS NEURAL-NETWORK (D2NN) FOR KNAPSACK PACKING PROBLEM SO IJCNN '93-NAGOYA : PROCEEDINGS OF 1993 INTERNATIONAL JOINT CONFERENCE ON NEURAL NETWORKS, VOLS 1-3 LA English DT Proceedings Paper CT 1993 International Joint Conference on Neural Networks (IJCNN 93-Nagoya) CY OCT 25-29, 1993 CL NAGOYA, JAPAN SP JAPANESE NEURAL NETWORK SOC, IEEE, NEURAL NETWORKS COUNCIL, INT NEURAL NETWORK SOC, EUROPEAN NEURAL NETWORK SOC, SOC INSTRUMENT & CONTROL ENGINEERS, INST ELECTR INFORMAT & COMMUN ENGINEERS, CHUBU BUR INT TRADE & IND, CITY NAGOYA, CHUBU ECON FEDERAT, CHUBU IND ADV CTR, AICHI PREFECTURE, NAGOYA CHAMBER COMMERCE & IND, NAGOYA IND SCI RES INST 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 0-7803-1421-2 J9 IEEE IJCNN PY 1993 BP 2425 EP 2428 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BA47B UT WOS:A1993BA47B00570 ER PT J AU DANDO, AH SEDDOUGUI, SO AF DANDO, AH SEDDOUGUI, SO TI THE COMPRESSIBLE GORTLER PROBLEM IN 2-DIMENSIONAL BOUNDARY-LAYERS SO IMA JOURNAL OF APPLIED MATHEMATICS LA English DT Article ID RECEPTIVITY PROBLEM; LINEAR DEVELOPMENT; VORTICES; INSTABILITY; GROWTH AB In this paper the authors investigate the growth rates of Gortler vortices in a compressible flow in the inviscid limit of large Gortler number. Numerical solutions are obtained for 0(1) wavenumbers. The further limits of (i) large Mach number and (ii) large wavenumber with 0(1) Mach number are considered. It is shown that two different types of disturbance mode can appear in this problem. The first is a wall layer mode, so named as it has its eigenfunctions trapped in a thin layer near the wall. The other mode investigated is confined to a thin layer away from the wall and termed a trapped-layer mode for large wavenumbers and an adjustment-layer mode for large Mach numbers, since then this mode has its eigenfunctions concentrated in the temperature adjustment layer. It is possible to investigate the near crossing of the modes which occurs in each of the limits mentioned. The inviscid limit does not predict a fastest growing mode, but does enable a most dangerous mode to be identified for 0(1) Mach number. For hypersonic flow the most dangerous mode depends on the size of the Gortler number. C1 NASA,LANGLEY RES CTR,INST COMP APPLICAT SCI & ENGN,HAMPTON,VA 23681. RP DANDO, AH (reprint author), UNIV MANCHESTER,DEPT MATH,OXFORD RD,MANCHESTER M13 9PL,LANCS,ENGLAND. RI Stephen, Sharon/B-1011-2016 OI Stephen, Sharon/0000-0001-8204-8419 NR 19 TC 9 Z9 9 U1 0 U2 3 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0272-4960 J9 IMA J APPL MATH JI IMA J. Appl. Math. PY 1993 VL 51 IS 1 BP 27 EP 67 DI 10.1093/imamat/51.1.27 PG 41 WC Mathematics, Applied SC Mathematics GA LW732 UT WOS:A1993LW73200003 ER PT B AU GREEN, RO CONEL, JE ROBERTS, DA AF GREEN, RO CONEL, JE ROBERTS, DA BE Vane, G TI ESTIMATION OF AEROSOL OPTICAL DEPTH, PRESSURE ELEVATION, WATER-VAPOR AND CALCULATION OF APPARENT SURFACE REFLECTANCE FROM RADIANCE MEASURED BY THE AIRBORNE VISIBLE INFRARED IMAGING SPECTROMETER (AVIRIS) USING A RADIATIVE-TRANSFER CODE SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 26 Z9 26 U1 1 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 2 EP 11 DI 10.1117/12.157054 PG 10 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00001 ER PT B AU GAO, BC GOETZ, AFH AF GAO, BC GOETZ, AFH BE Vane, G TI DERIVATION OF EQUIVALENT WATER THICKNESS AND AN INDEX OF BIOCHEMICAL-COMPONENT ABUNDANCE IN VEGETATION FROM AVIRIS DATA SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,UNIV SPACE RES ASSOC,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 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 12 EP 22 DI 10.1117/12.157064 PG 11 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00002 ER PT B AU DAVIS, CO HAMILTON, M RHEA, WJ VANDENBOSCH, J CARDER, K STEWARD, R AF DAVIS, CO HAMILTON, M RHEA, WJ VANDENBOSCH, J CARDER, K STEWARD, R BE Vane, G TI SPECTRAL-ANALYSIS OF AN AVIRIS IMAGE OF SAN PEDRO CHANNEL SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 5 Z9 5 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 64 EP 76 DI 10.1117/12.157070 PG 13 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00007 ER PT B AU NOVO, EM AF NOVO, EM BE Vane, G TI WATER SPECTRAL LIBRARIES FOR THE INTERPRETATION OF IMAGE SPECTROMETRIC DATA SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL 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 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 91 EP 102 DI 10.1117/12.157046 PG 12 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00009 ER PT B AU KIANG, RK AF KIANG, RK BE Vane, G TI INFORMATION EXTRACTION FROM THE GER 63-CHANNEL SPECTROMETER DATA SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,EARTH SCI DATA OPERAT FACIL,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 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 112 EP 118 DI 10.1117/12.157048 PG 7 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00011 ER PT B AU GREEN, RO CHRIEN, TG NIELSEN, PJ SARTURE, CM ENG, BT CHOVIT, C MURRAY, AT EASTWOOD, ML NOVACK, HI AF GREEN, RO CHRIEN, TG NIELSEN, PJ SARTURE, CM ENG, BT CHOVIT, C MURRAY, AT EASTWOOD, ML NOVACK, HI BE Vane, G TI AIRBORNE VISIBLE/INFRARED IMAGING SPECTROMETER (AVIRIS) - RECENT IMPROVEMENTS TO THE SENSOR AND DATA FACILITY SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. 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 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 180 EP 190 DI 10.1117/12.157056 PG 11 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00018 ER PT B AU HAMMER, PD VALERO, FPJ PETERSON, DL SMITH, WH AF HAMMER, PD VALERO, FPJ PETERSON, DL SMITH, WH BE Vane, G TI AN IMAGING INTERFEROMETER FOR TERRESTRIAL REMOTE-SENSING SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,AMES RES CTR,DIV EARTH SYST,MOFFETT FIELD,CA 94035. NR 0 TC 16 Z9 16 U1 2 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 244 EP 255 DI 10.1117/12.157061 PG 12 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00024 ER PT B AU CHRIEN, TG CHOVIT, C MILLER, PJ AF CHRIEN, TG CHOVIT, C MILLER, PJ BE Vane, G TI IMAGING SPECTROMETER USING A LIQUID-CRYSTAL TUNABLE FILTER SO IMAGING SPECTROMETRY OF THE TERRESTRIAL ENVIRONMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Imaging Spectrometry of the Terrestrial Environment Conference CY APR 14-15, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 4 Z9 4 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1173-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 1937 BP 256 EP 261 DI 10.1117/12.157062 PG 6 WC Remote Sensing; Optics; Spectroscopy SC Remote Sensing; Optics; Spectroscopy GA BZ81P UT WOS:A1993BZ81P00025 ER PT J AU WILSON, DA WEIGEL, RC WHEELER, RM SAGER, JC AF WILSON, DA WEIGEL, RC WHEELER, RM SAGER, JC TI LIGHT SPECTRAL QUALITY EFFECTS ON THE GROWTH OF POTATO (SOLANUM-TUBEROSUM L) NODAL CUTTINGS IN-VITRO SO IN VITRO CELLULAR & DEVELOPMENTAL BIOLOGY-PLANT LA English DT Article DE ARTIFICIAL LIGHT; CELSS (CLOSED ECOLOGICAL LIFE SUPPORT SYSTEMS); IN-VITRO; NODES; EDEMA; POTATO; LPS; LOW-PRESSURE SODIUM ID BLUE-LIGHT; RAPID SUPPRESSION; PLANTS; CALLUS AB The effects of light spectral quality on the growth of in vitro nodal cuttings of potato (Solanum tuberosum L.) cultivars Norland, Superior, Kennebec, and Denali were examined. The different light spectra were provided by Vita-Lite fluorescent (VF) (a white light control), blue fluorescent (BF), red fluorescent (RF), low-pressure sodium (LPS), and a combination of low-pressure sodium plus cool-white fluorescent lamps (LPS/CWF). For all cultivars, stem lengths after 4 wk were longest under LPS, followed by RF, LPS/CWF, VF, and BF (in descending order). Microscopic studies revealed that cells were shortest when cultured in BF or VF environments, and were longest in RF or LPS lamp environments. The highest number of axillary branches occurred on plantlets grown with LPS or LPS/CWF, whereas the lowest number occurred with BF. No leaf or stem edema (callus or gall-like growths) occurred with LPS or LPS/CWF lighting, and no edema occurred on cv. Norland plantlets, regardless of lighting. Results suggest that shoot morphologic development of in vitro grown potato plants can be controlled by controlling irradiant spectral quality. C1 FLORIDA INST TECHNOL,DEPT BIOL SCI,150 W UNIV BLVD,MELBOURNE,FL 32901. NASA,BIOL RES & LIFE SUPPORT OFF,KENNEDY SPACE CTR,FL 32899. NR 23 TC 20 Z9 21 U1 2 U2 5 PU SOC IN VITRO BIOLOGY PI UPPER MARLBORO PA 9315 LARGO DR W #255, UPPER MARLBORO, MD 20774-4755 SN 1054-5476 J9 IN VITRO CELL DEV-PL JI In Vitro Cell. Dev. Biol.-Plant PD JAN PY 1993 VL 29P IS 1 BP 5 EP 8 PG 4 WC Plant Sciences; Cell Biology; Developmental Biology SC Plant Sciences; Cell Biology; Developmental Biology GA LR384 UT WOS:A1993LR38400002 PM 11538010 ER PT B AU IVERSON, DL HERRIN, S AF IVERSON, DL HERRIN, S BE Chung, PWH Lovegrove, G Ali, M TI REAL-TIME AUTOMATED DIAGNOSIS USING MATRIX FAILURE MODES AND EFFECTS ANALYSIS SO INDUSTRIAL AND ENGINEERING APPLICATIONS OF ARTIFICIAL INTELLIGENCE AND EXPERT SYSTEMS - IEA/AIE 93 LA English DT Proceedings Paper CT 6th International Conference on Industrial and Engineering Applications of Artificial Intelligence and Expert Systems (IEA/AIE 93) CY JUN 01-04, 1993 CL EDINBURGH, SCOTLAND SP INT SOC APPL INTELLIGENCE, AMER ASSOC ARTIFICIAL INTELLIGENCE, ARTIFICIAL INTELLIGENCE APPLICAT INST, CANADIAN SOC COMP STUDIES INTELLIGENCE, EUROPE COORD COMM ARTIFICIAL INTELLIGENCE, IEEE, COMP SOC, INT ASSOC KNOWLEDGE ENGINEERS, INT NEURAL NETWORK SOC, JAPAN SOC ARTIFICIAL INTELLIGENCE, SW TEXAS STATE UNIV C1 NASA,AMES RES CTR,SPACECRAFT DATA SYST RES BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU GORDON AND BREACH SCIENCE PUBL PI LANGHORNE PA 820 TOWN CENTER DRIVE, LANGHORNE, PA 19047 BN 2-88124-604-4 PY 1993 BP 98 EP 101 PG 4 WC Computer Science, Artificial Intelligence; Engineering, Multidisciplinary; Engineering, Industrial SC Computer Science; Engineering GA BB14Y UT WOS:A1993BB14Y00017 ER PT B AU DEATON, JB ROGOWSKI, RS AF DEATON, JB ROGOWSKI, RS BE Harding, KG Stahl, HP TI ELECTRONIC SHEAROGRAPHY FOR NONDESTRUCTIVE EVALUATION - THE INFLUENCE OF THE FIELD-OF-VIEW AND THE SHEARING ANGLE SO INDUSTRIAL OPTICAL SENSING AND METROLOGY: APPLICATIONS AND INTEGRATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Industrial Optical Sensing and Metrology: Applications and Integration CY SEP 10, 1993 CL BOSTON, MA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. 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 0-8194-1331-3 J9 P SOC PHOTO-OPT INS PY 1993 VL 2066 BP 2 EP 13 PG 12 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BZ81M UT WOS:A1993BZ81M00001 ER PT J AU SILVESTER, JP KLINGBIEL, PH AF SILVESTER, JP KLINGBIEL, PH TI AN OPERATIONAL SYSTEM FOR SUBJECT SWITCHING BETWEEN CONTROLLED VOCABULARIES SO INFORMATION PROCESSING & MANAGEMENT LA English DT Article AB The NASA system of automatically converting sets of terms assigned by Department of Defense indexers to sets of NASA's authorized terms is described. This little-touted system, which has been operating successfully since 1983, matches concepts, rather than words. Subject Switching uses a translation table, known as the Lexical Dictionary, accessed by a program that determines which rules to follow in making the transition from DTIC's to NASA's authorized terms. The authors describe the four phases of development of Subject Switching, changes that have been made, evaluating the system, and benefits. Benefits to NASA include saving indexers' time, the addition of access points for documents indexed, the utilization of other government indexing, and a contribution towards the now-operational NASA, online, interactive, machine aided indexing. RP SILVESTER, JP (reprint author), NASA,CTR AEROSP INFORMAT,POB 8757,BALTIMORE,MD 21240, USA. NR 10 TC 6 Z9 6 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0306-4573 J9 INFORM PROCESS MANAG JI Inf. Process. Manage. PD JAN-FEB PY 1993 VL 29 IS 1 BP 47 EP 59 DI 10.1016/0306-4573(93)90022-6 PG 13 WC Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA KK115 UT WOS:A1993KK11500004 ER PT B AU TELESCO, CM AF TELESCO, CM BE Mampaso, A Prieto, M Sanchez, F TI GALAXIES IN THE INFRARED SO INFRARED ASTRONOMY: IV CANARY ISLANDS WINTER SCHOOL OF ASTROPHYSICS LA English DT Proceedings Paper CT 4th Canary Island Winter School of Astrophysics CY DEC 07-18, 1992 CL PLAYA AMERICAS, TENERIFE, SPAIN SP INST ASTROFIS CANARIAS, UNIV INT MENENDEZ PELAYO HO PLAYA AMERICAS C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. NR 0 TC 2 Z9 2 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE, CAMBS, ENGLAND CB2 1RP BN 0-521-46462-5 PY 1993 BP 175 EP 219 PG 45 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA82S UT WOS:A1993BA82S00004 ER PT B AU MCKELVEY, ME MCMURRAY, RE MCCREIGHT, CR ROELLIG, TL COOPER, R YUEN, L DEUTSCH, LK AF MCKELVEY, ME MCMURRAY, RE MCCREIGHT, CR ROELLIG, TL COOPER, R YUEN, L DEUTSCH, LK BE Fowler, AM TI 58X62 SI-AS IBC DETECTOR ARRAYS ON PMOS MULTIPLEXERS FOR ASTRONOMY SO INFRARED DETECTORS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Detector and Instrumentation CY APR 14-16, 1993 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 0-8194-1182-5 J9 P SOC PHOTO-OPT INS PY 1993 VL 1946 BP 88 EP 99 DI 10.1117/12.158663 PG 12 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BZ73X UT WOS:A1993BZ73X00012 ER PT B AU ROELLIG, TL ONAKA, T MCMAHON, TJ TANABE, T AF ROELLIG, TL ONAKA, T MCMAHON, TJ TANABE, T BE Fowler, AM TI THE MIDINFRARED SPECTROMETER ON THE INFRARED TELESCOPE IN-SPACE SO INFRARED DETECTORS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Detector and Instrumentation CY APR 14-16, 1993 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 0-8194-1182-5 J9 P SOC PHOTO-OPT INS PY 1993 VL 1946 BP 249 EP 260 DI 10.1117/12.158677 PG 12 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BZ73X UT WOS:A1993BZ73X00027 ER PT B AU JOHNSTON, AR LIU, DTH FOROUHAR, S LUTES, GF MASERJIAN, J FOSSUM, ER AF JOHNSTON, AR LIU, DTH FOROUHAR, S LUTES, GF MASERJIAN, J FOSSUM, ER BE Fowler, AM TI OPTICAL LINKS FOR CRYOGENIC FOCAL-PLANE ARRAY READOUT SO INFRARED DETECTORS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Detector and Instrumentation CY APR 14-16, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,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 0-8194-1182-5 J9 P SOC PHOTO-OPT INS PY 1993 VL 1946 BP 375 EP 383 DI 10.1117/12.158689 PG 9 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BZ73X UT WOS:A1993BZ73X00039 ER PT B AU CUNNINGHAM, TJ GEE, R FOSSUM, ER BAIER, SM AF CUNNINGHAM, TJ GEE, R FOSSUM, ER BAIER, SM BE Fowler, AM TI NOISE AND ELECTRICAL CHARACTERISTICS BELOW 10-K OF SMALL CHFET CIRCUITS AND DISCRETE DEVICES SO INFRARED DETECTORS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Detector and Instrumentation CY APR 14-16, 1993 CL ORLANDO, FL SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,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 0-8194-1182-5 J9 P SOC PHOTO-OPT INS PY 1993 VL 1946 BP 384 EP 394 DI 10.1117/12.158690 PG 11 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BZ73X UT WOS:A1993BZ73X00040 ER PT B AU JORQUERA, C BEICHMAN, C BRUCE, C GAUTIER, N JARRETT, T AF JORQUERA, C BEICHMAN, C BRUCE, C GAUTIER, N JARRETT, T BE Fowler, AM TI INTEGRATION AND EVALUATION OF A NEAR-INFRARED CAMERA UTILIZING A HGCDTE NICMOS3 ARRAY FOR THE MT PALOMAR 200-INCH OBSERVATORY SO INFRARED DETECTORS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Infrared Detector and Instrumentation CY APR 14-16, 1993 CL ORLANDO, FL 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 0-8194-1182-5 J9 P SOC PHOTO-OPT INS PY 1993 VL 1946 BP 534 EP 546 DI 10.1117/12.158705 PG 13 WC Astronomy & Astrophysics; Instruments & Instrumentation; Optics SC Astronomy & Astrophysics; Instruments & Instrumentation; Optics GA BZ73X UT WOS:A1993BZ73X00054 ER PT B AU WERNER, MW OSMOLOVSKY, MG AF WERNER, MW OSMOLOVSKY, MG BE Scholl, MS TI THE ATLAS SIRTF MISSION SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, 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 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 109 EP 120 DI 10.1117/12.157818 PG 12 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00012 ER PT B AU KWOK, JH OSMOLOVSKY, MG AF KWOK, JH OSMOLOVSKY, MG BE Scholl, MS TI A NEW MISSION AND SPACECRAFT DESIGN FOR THE SPACE INFRARED TELESCOPE FACILITY SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,MISSION DESIGN SECT,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 121 EP 132 DI 10.1117/12.157819 PG 12 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00013 ER PT B AU EISENHARDT, P FAZIO, G HOUCK, J RIEKE, G AF EISENHARDT, P FAZIO, G HOUCK, J RIEKE, G BE Scholl, MS TI SIRTF INSTRUMENT CONCEPTS SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, 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 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 133 EP 144 DI 10.1117/12.157820 PG 12 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00014 ER PT B AU MATHER, JC AF MATHER, JC BE Scholl, MS TI THE COSMIC BACKGROUND EXPLORER (COBE) MISSION SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 5 Z9 5 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 146 EP 157 DI 10.1117/12.157821 PG 12 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00015 ER PT B AU MATHER, JC FIXSEN, DJ SHAFER, RA AF MATHER, JC FIXSEN, DJ SHAFER, RA BE Scholl, MS TI DESIGN FOR THE COBE FAR-INFRARED ABSOLUTE SPECTROPHOTOMETER (FIRAS) SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 31 Z9 31 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 168 EP 177 DI 10.1117/12.157823 PG 10 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00017 ER PT B AU SILVERBERG, RF HAUSER, MG BOGGESS, NW KELSALL, TJ MOSELEY, SH MURDOCK, TL AF SILVERBERG, RF HAUSER, MG BOGGESS, NW KELSALL, TJ MOSELEY, SH MURDOCK, TL BE Scholl, MS TI DESIGN OF THE DIFFUSE INFRARED BACKGROUND EXPERIMENT (DIRBE) ON COBE SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. NR 0 TC 32 Z9 32 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 180 EP 189 DI 10.1117/12.157825 PG 10 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00018 ER PT B AU KELSALL, T HAUSER, MG BERRIMAN, GB BOGGESS, NW MOSELEY, SH MURDOCK, TL SILVERBERG, RF SPIESMAN, WJ WEILAND, JL AF KELSALL, T HAUSER, MG BERRIMAN, GB BOGGESS, NW MOSELEY, SH MURDOCK, TL SILVERBERG, RF SPIESMAN, WJ WEILAND, JL BE Scholl, MS TI INVESTIGATION OF THE ZODIACAL LIGHT FROM 1 TO 240-MU-M USING COBE-DIRBE DATA SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS RP KELSALL, T (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771, USA. 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 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 190 EP 201 DI 10.1117/12.157826 PG 12 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00019 ER PT B AU SODROSKI, TJ ARENDT, RG HAUSER, MG BOGGESS, N DWEK, E KELSALL, T MOSELEY, SH MURDOCK, TL SILVERBERG, RF BERRIMAN, GB FRANZ, BA FREUDENREICH, HT LISSE, CM MITRA, M ODEGARD, NP SPIESMAN, WJ STEMWEDEL, SW TOLLER, GN WEILAND, JL AF SODROSKI, TJ ARENDT, RG HAUSER, MG BOGGESS, N DWEK, E KELSALL, T MOSELEY, SH MURDOCK, TL SILVERBERG, RF BERRIMAN, GB FRANZ, BA FREUDENREICH, HT LISSE, CM MITRA, M ODEGARD, NP SPIESMAN, WJ STEMWEDEL, SW TOLLER, GN WEILAND, JL BE Scholl, MS TI OBSERVATIONS OF THE LARGE-SCALE INFRARED-EMISSION FROM THE GALACTIC PLANE REGION BY THE DIFFUSE INFRARED BACKGROUND EXPERIMENT SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,GODDARD SPACE FLIGHT CTR,APPL RES CORP,GREENBELT,MD 20771. RI Lisse, Carey/B-7772-2016; OI Lisse, Carey/0000-0002-9548-1526; Arendt, Richard/0000-0001-8403-8548 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 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 202 EP 210 DI 10.1117/12.157827 PG 9 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00020 ER PT B AU JANSSEN, MA GULKIS, S BENNETT, CL KOGUT, AJ AF JANSSEN, MA GULKIS, S BENNETT, CL KOGUT, AJ BE Scholl, MS TI DESIGN AND RESULTS OF DIFFERENTIAL MICROWAVE RADIOMETERS (DMR) ON COBE SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, 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 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 211 EP 221 DI 10.1117/12.157828 PG 11 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00021 ER PT B AU NICHOLS, JD AF NICHOLS, JD BE Scholl, MS TI INTEGRATING NEAR REAL-TIME INFRARED TECHNOLOGY INTO WILDLAND FIRE DETECTION AND MAPPING SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, 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 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 248 EP 255 DI 10.1117/12.157832 PG 8 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00024 ER PT B AU SCHEMBER, H HACKING, P AF SCHEMBER, H HACKING, P BE Scholl, MS TI THE WIDE-FIELD INFRARED EXPLORER (WIRE) SO INFRARED SPACEBORNE REMOTE SENSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Infrared Remote Sensing Conference CY JUL 14-16, 1993 CL SAN DIEGO, 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 0-8194-1268-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2019 BP 395 EP 406 DI 10.1117/12.157845 PG 12 WC Engineering, Aerospace; Remote Sensing SC Engineering; Remote Sensing GA BZ81J UT WOS:A1993BZ81J00038 ER PT S AU GEORGE, JA SCHLECHT, LE AF GEORGE, JA SCHLECHT, LE BE Hegering, HG Yemini, Y TI THE NAS HIERARCHICAL NETWORK MANAGEMENT-SYSTEM SO INTEGRATED NETWORK MANAGEMENT, III SE IFIP TRANSACTIONS C-COMMUNICATION SYSTEMS LA English DT Proceedings Paper CT 3RD INTERNATIONAL SYMP ON INTEGRATED NETWORK MANAGEMENT ( ISINM 93 ) CY APR 18-23, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT INFORMAT PROC DE MANAGEMENT OF COMPUTING AND INFORMATION SYSTEMS, GENERAL; DISTRIBUTED SYSTEMS; USER INTERFACES RP GEORGE, JA (reprint author), NASA,AMES RES CTR,COMP SCI CORP,M-S 258-6,MOFFETT FIELD,CA 94086, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA AMSTERDAM SN 0926-549X BN 0-444-89982-0 J9 IFIP TRANS C PY 1993 VL 12 BP 301 EP 312 PG 12 WC Telecommunications SC Telecommunications GA BY43L UT WOS:A1993BY43L00024 ER PT S AU JACKMAN, CH AF JACKMAN, CH BE Mcbean, GA Hantel, M TI ENERGETIC PARTICLE INFLUENCES ON NOY AND OZONE IN THE MIDDLE ATMOSPHERE SO INTERACTIONS BETWEEN GLOBAL CLIMATE SUBSYSTEMS: THE LEGACY OF HANN SE GEOPHYSICAL MONOGRAPH SERIES LA English DT Proceedings Paper CT Hann Symposium on Interactions Between Global Climate Subsystems: The Legacy of Hann, at the IUGG General Assembly CY AUG, 1991 CL VIENNA, AUSTRIA SP INT UNION GEODESY & GEOPHYS C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Jackman, Charles/D-4699-2012 NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0065-8448 BN 0-87590-466-1 J9 GEOPH MONOG SERIES PY 1993 VL 75 BP 131 EP 139 PG 9 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Geology; Meteorology & Atmospheric Sciences GA BZ62V UT WOS:A1993BZ62V00013 ER PT S AU DICKEY, JO MARCUS, SL EUBANKS, TM HIDE, R AF DICKEY, JO MARCUS, SL EUBANKS, TM HIDE, R BE Mcbean, GA Hantel, M TI CLIMATE STUDIES VIA SPACE GEODESY - RELATIONSHIPS BETWEEN ENSO AND INTERANNUAL LENGTH-OF-DAY VARIATION SO INTERACTIONS BETWEEN GLOBAL CLIMATE SUBSYSTEMS: THE LEGACY OF HANN SE GEOPHYSICAL MONOGRAPH SERIES LA English DT Proceedings Paper CT Hann Symposium on Interactions Between Global Climate Subsystems: The Legacy of Hann, at the IUGG General Assembly CY AUG, 1991 CL VIENNA, AUSTRIA SP INT UNION GEODESY & GEOPHYS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0065-8448 BN 0-87590-466-1 J9 GEOPH MONOG SERIES PY 1993 VL 75 BP 141 EP 155 PG 15 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Geology; Meteorology & Atmospheric Sciences GA BZ62V UT WOS:A1993BZ62V00014 ER PT J AU COTTON, JD NOEBE, RD KAUFMAN, MJ AF COTTON, JD NOEBE, RD KAUFMAN, MJ TI THE EFFECTS OF CHROMIUM ON NIAL INTERMETALLIC ALLOYS .1. MICROSTRUCTURES AND MECHANICAL-PROPERTIES SO INTERMETALLICS LA English DT Article DE NICKLE ALUMINIDES; SOLID SOLUTION STRENGTHENING; BRITTLE DUCTILE TRANSITION; ATOMIC SITE PREFERENCE; HALL-PETCH ANALYSIS ID SINGLE-CRYSTALS; SLIP SYSTEMS; TEMPERATURE; TENSILE; CONSTITUTION; DEFORMATION; DUCTILITY; STRENGTH; BRITTLE; 1200-K AB The effects of Cr on the microstructure and mechanical properties of NiAl have been characterized. It is shown that Cr is an efficient solid solution strengthener in NiAl, effectively tripling the 0.2% yield strength at the 1 at. % level; this is also its maximum solubility. The presence of Cr also increases the BDTT of NiAl by approximately 150K and reduces the already limited ductility to essentially zero. Larger alloying additions produce fine alpha-Cr precipitation. However, the associated hardening contribution due to precipitation is relatively minor compared with solid solution effects. Independently of Cr content, stoichiometric deviation was observed to produce significant increases in strength and BDTT. It is shown that hardening due to both intrinsic and extrinsic substitutional defects is ultimately a function of the solubility, site preference, and alloying strategy (e.g., a particular Ni/Al ratio, or Cr substituted solely for either Ni or Al) of the Cr addition. C1 NASA, LEWIS RES CTR, CLEVELAND, OH 44135 USA. UNIV FLORIDA, GAINESVILLE, FL 32611 USA. RP LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA. RI Kaufman, Michael/A-7737-2012 NR 59 TC 57 Z9 57 U1 0 U2 10 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 0966-9795 EI 1879-0216 J9 INTERMETALLICS JI Intermetallics PY 1993 VL 1 IS 1 BP 3 EP 20 DI 10.1016/0966-9795(93)90016-O PG 18 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA MN928 UT WOS:A1993MN92800002 ER PT J AU COTTON, JD NOEBE, RD KAUFMAN, MJ AF COTTON, JD NOEBE, RD KAUFMAN, MJ TI THE EFFECTS OF CHROMIUM ON NIAL INTERMETALLIC ALLOYS .2. SLIP SYSTEMS SO INTERMETALLICS LA English DT Article DE INTERMETALLICS; NIAL; DISLOCATIONS; CHROMIUM ID SINGLE-CRYSTALS; DISLOCATIONS; ALUMINIDES; BEHAVIOR AB One of the principal obstacles to room temperature tensile ductility in NiAl is an insufficient number of independent slip systems, due to the sole operation of the [100]{011} system. It has been both predicted and reported that Cr additions to NiAl induce [111]{112} slip, increasing the number of independent slip systems to five, a number sufficient for general plasticity. However, no attendant increase in tensile ductility has been observed. The present study reexamines the effects of Cr on the predominant room temperature slip system in polycrystalline NiAl, as a function of Cr content, Ni/Al ratio and processing route. It is shown that Cr has essentially no effect on the slip system in NiAl at room temperature, while processing by extrusion, compared with casting and homogenization, produces a small, yet significant, proportion of [110]{110} dislocations. Possible explanations for the discrepancy of the present results with those of previous work are discussed, as well as the presence and implications of the [110]{110} dislocations. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. UNIV FLORIDA,GAINESVILLE,FL 32611. RP COTTON, JD (reprint author), LOS ALAMOS NATL LAB,LOS ALAMOS,NM 87545, USA. RI Kaufman, Michael/A-7737-2012 NR 44 TC 21 Z9 24 U1 0 U2 5 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 1993 VL 1 IS 2 BP 117 EP 126 DI 10.1016/0966-9795(93)90029-U PG 10 WC Chemistry, Physical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Chemistry; Materials Science; Metallurgy & Metallurgical Engineering GA MN929 UT WOS:A1993MN92900004 ER PT B AU HUCK, FO FALES, CL AF HUCK, FO FALES, CL BE Gulyaev, YV Pape, DR TI ON THE ASSESSMENT OF VISUAL COMMUNICATION BY INFORMATION-THEORY SO INTERNATIONAL CONFERENCE ON OPTICAL INFORMATION PROCESSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 1st International Conference on Optical Information Processing CY AUG 02-07, 1993 CL RUSSIAN ACAD SCI HOUSE, ST PETERSBURG, RUSSIA SP RUSSIAN ACAD SCI, A F IOFFE PHYS TECH INST, AT&T ST PETERSBURG, CO LTD RESPONSIBIL STACK, RUSSIA, ENGN & CONSTRUCT CORP CREATION, RUSSIA, FINANCIAL & PROD CO ESTRA, RUSSIA, IEEE, LASERS & ELECTRO OPT SOC, US, RUSSIAN ACAD SCI, INST RADIO ENGN & ELECTR, MINIST SCI, HIGHER SCH EDUC & TECH POLICY RUSSIA, MOSCOW SCI PROD CORP ASTRA, OPT SOC AMER, RADAR MMS LENINETZ, SPIE, RUSSIA CHAPTER, SOC PHOTO OPT INSTRUMENTAT ENGINEERS, ST PETERSBURG INNOVAT BANK, ST PETERSBURG STATE ACAD AEROSP INSTRUMENTAT HO RUSSIAN ACAD SCI HOUSE 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 0-8194-1310-0 J9 P SOC PHOTO-OPT INS PY 1993 VL 2051 BP 478 EP 483 PG 6 WC Acoustics; Computer Science, Information Systems; Optics SC Acoustics; Computer Science; Optics GA BZ74E UT WOS:A1993BZ74E00055 ER PT B AU ROSENZWEIG, C AF ROSENZWEIG, C BE Buxton, DR Shibles, R Forsberg, RA Blad, BL Asay, KH Paulsen, GM Wilson, RF TI RECENT GLOBAL ASSESSMENTS OF CROP RESPONSES TO CLIMATE-CHANGE SO INTERNATIONAL CROP SCIENCE I LA English DT Proceedings Paper CT International Crop Science Congress CY JUL 14-22, 1992 CL AMES, IA SP IOWA STATE UNIV, CROP SCI SOC AMER C1 NASA,GODDARD INST SPACE STUDIES,NEW YORK,NY 10025. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CROP SCIENCE SOC AMERICA PI MADISON PA 677 SOUTH SEGOE ROAD, MADISON, WI 53711 BN 0-89118-538-0 PY 1993 BP 265 EP 272 PG 8 WC Agronomy; Environmental Sciences SC Agriculture; Environmental Sciences & Ecology GA BZ67Y UT WOS:A1993BZ67Y00041 ER PT J AU GAYDA, J GABB, TP LERCH, BA AF GAYDA, J GABB, TP LERCH, BA TI FATIGUE-ENVIRONMENT INTERACTIONS IN A SIC/TI-15-3 COMPOSITE SO INTERNATIONAL JOURNAL OF FATIGUE LA English DT Article DE FATIGUE; ENVIRONMENT; TITANIUM MATRIX COMPOSITE AB Load-controlled isothermal and non-isothermal fatigue lives of a [0-degrees]8 SiC/Ti-15-3 were evaluated at temperatures between 150 and 550-degrees-C and a target strain range of about 0.45%. In non-isothermal fatigue tests, load was first cycled at minimum temperature and then temperature was cycled at zero load. For fatigue tests with peak temperatures at or above 300-degrees-C, fatigue life was dramatically reduced compared to that at 150-degrees-C. The shortest life was produced by the non-isothermal test with the greatest temperature range (DELTAT = 400-degrees-C) and highest peak temperature (T(max) = 550-degrees-C). Vacuum testing showed that much of the life reduction under isothermal and non-isothermal conditions was related to environmental effects, although the nature of the fatigue-environment interaction was decidedly different for the isothermal and non-isothermal test cycles which were studied. RP GAYDA, J (reprint author), NASA,LEWIS RES CTR,MAIL STOP 49-3,21000 BROOKPARK RD,CLEVELAND,OH 44135, USA. NR 6 TC 3 Z9 3 U1 0 U2 0 PU BUTTERWORTH-HEINEMANN LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0142-1123 J9 INT J FATIGUE JI Int. J. Fatigue PD JAN PY 1993 VL 15 IS 1 BP 41 EP 45 DI 10.1016/0142-1123(93)90076-3 PG 5 WC Engineering, Mechanical; Materials Science, Multidisciplinary SC Engineering; Materials Science GA KF161 UT WOS:A1993KF16100008 ER PT J AU HUMPHREY, JAC TO, WM AF HUMPHREY, JAC TO, WM TI COMPARISON OF TURBULENCE MODELS FOR THE NATURAL-CONVECTION BOUNDARY-LAYER ALONG A HEATED VERTICAL PLATE - DISCUSSION SO INTERNATIONAL JOURNAL OF HEAT AND MASS TRANSFER LA English DT Letter C1 NASA,LEWIS RES CTR,SVERDRUP TECHNOL INC,TURBOMACHINERY ANAL SECT,MS 5-9,CLEVELAND,OH 44135. RP HUMPHREY, JAC (reprint author), UNIV CALIF BERKELEY,DEPT MECH ENGN,BERKELEY,CA 94720, USA. NR 2 TC 1 Z9 1 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0017-9310 J9 INT J HEAT MASS TRAN JI Int. J. Heat Mass Transf. PD JAN PY 1993 VL 36 IS 1 BP 245 EP 246 DI 10.1016/0017-9310(93)80087-B PG 2 WC Thermodynamics; Engineering, Mechanical; Mechanics SC Thermodynamics; Engineering; Mechanics GA KE744 UT WOS:A1993KE74400027 ER PT J AU BAHK, S CHAVEZ, D EMERY, B WILSON, B STOLTZFUS, J AF BAHK, S CHAVEZ, D EMERY, B WILSON, B STOLTZFUS, J TI PROTECTING ALUMINUM-ALLOY FROM PARTICLE-IMPACT IGNITION WITH AN AL2O-3 FILM SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB Bare aluminum alloy is compared to soft-anodized aluminum alloy (oxide film thickness 5 mum, 10 mum, 20 mum, or 50 mum) for susceptibility to ignition by supersonic particle impact in pure oxygen. The particle diameter ranged from 1600 mum to 2000 mum, temperature ranged from 220 K to 672 K and oxygen pressure was 27.6 MPa. The event of ignition was recorded on video tape. The results of ignition frequency are reported as a Logistic Regression Model over the variable space. In addition, the impact process was simulated using the computer code ZEUS to identify ignition te and ignition sites as well as to qualitatively describe the mechanism of protection offered by the soft-anodized oxide film. Significant improvement against particle-impact ignition was achieved through the use of the anodized oxide film. RP BAHK, S (reprint author), NASA,WHITE SANDS TEST FACIL,PO DRAWER MM,LAS CRUCES,NM 88004, USA. NR 15 TC 0 Z9 0 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 61 EP 71 DI 10.1016/0734-743X(93)90009-V PG 11 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300008 ER PT J AU BOSLOUGH, MB ANG, JA CHHABILDAS, LC REINHART, WD HALL, CA COURPALAIS, BG CHRISTIANSEN, EL CREWS, JL AF BOSLOUGH, MB ANG, JA CHHABILDAS, LC REINHART, WD HALL, CA COURPALAIS, BG CHRISTIANSEN, EL CREWS, JL TI HYPERVELOCITY TESTING OF ADVANCED SHIELDING CONCEPTS FOR SPACECRAFT AGAINST IMPACTS TO 10-KM/S SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB Experiments have been performed on NASA state-of-the-art hypervelocity impact shields using the Sandia Hypervelocity Launcher (HVL) to obtain test velocities greater than those achievable using conventional two stage light-gas gun technology. The objective of the tests was to provide the first experimental data on the advanced shielding concepts for evaluation of the analytical equations (shield performance predictors) at velocities previously unattainable in the laboratory, and for comparison to single Whipple Bumper Shields (WBS) under similar loading conditions. The results indicate that significantly more mass is required on the back sheet of the WBS to stop an approximately flat-plate particle impacting at 7 km/sec and at 10 km/sec than the analytical equations (derived from spherical particle impact data) predicted. The Multi-Shock Shield (MSS) consists of four ceramic fabric bumpers, and is lighter in terms of areal density by up to 33%, but is as effective as the heavier WBS under similar impact conditions at about 10 km/s. The Mesh Double Bumper shield (MDB) consists of an aluminum wire mesh bumper, followed by a sheet of solid aluminum and a layer of Kevlar(R) fabric. It provides a weight savings in terms of areal density of up to 35% compared to the WBS for impacts of around 10 km/s. C1 MCDONNELL DOUGLAS SPACE SYST DIV,HOUSTON,TX 77062. NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. RP BOSLOUGH, MB (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 15 TC 18 Z9 18 U1 0 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 95 EP 106 DI 10.1016/0734-743X(93)90012-V PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300011 ER PT J AU CHHABILDAS, LC HERTEL, ES HILL, SA AF CHHABILDAS, LC HERTEL, ES HILL, SA TI HYPERVELOCITY IMPACT TESTS AND SIMULATIONS OF SINGLE WHIPPLE BUMPER SHIELD CONCEPTS AT 10-KM/S SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB A series of experiments has been performed to evaluate the effectiveness of a Whipple bumper shield to orbital space debris at impact velocities of approximately 10 km/s. Upon impact by a 19 mm (0.87 mm thick, L/D approximately 0.5) flier plate, the thin aluminum bumper shield disintegrates into a debris cloud. The debris cloud front propagates axially at velocities of approximately 14 km/s and expands radially at a velocity of approximately 7 km/s. Subsequent loading by the debris on a 3.2 mm thick aluminum substructure placed 1 14 mm from the bumper penetrates the substructure completely. However, when the diameter of the flier plate is reduced to 12.7 mm, the substructure, although damaged, is not perforated. Numerical simulations performed using the multi-dimensional hydrodynamics code CTH also predict complete perforation of the substructure by the subsequent debris cloud for the larger flier plate. The numerical simulation for a 12.7 mm flier plate, however, shows a strong dependence on assumed impact geometry, i. e., a spherical projectile impact geometry does not result in perforation of the substructure by the debris cloud, while the flat plate impact geometry results in perforation. C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. RP CHHABILDAS, LC (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 14 TC 12 Z9 13 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 133 EP 144 DI 10.1016/0734-743X(93)90015-Y PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300014 ER PT J AU CHRISTIANSEN, EL AF CHRISTIANSEN, EL TI DESIGN AND PERFORMANCE EQUATIONS FOR ADVANCED METEOROID AND DEBRIS SHIELDS SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB This paper provides equations defining the performance capability of various types of meteoroid and debris shielding systems. These equations have been developed at the NASA Johnson Space Center (JSC) Hypervelocity Impact Test Facility (HIT-F). Equations are included that are applicable for aluminum Whipple shields, Nextel(R) Multi-Shock (MS) shields, hybrid Nextel(R)/Aluminum MS shields, and Mesh Double-Bumper (MDB) shields. The MS and MDB shields are advanced shields with demonstrated weight and performance advantages over conventional Whipple shields. RP CHRISTIANSEN, EL (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,MAIL CODE SN3,HOUSTON,TX 77058, USA. NR 20 TC 130 Z9 150 U1 2 U2 9 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 145 EP 156 DI 10.1016/0734-743X(93)90016-Z PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300015 ER PT J AU CHRISTIANSEN, EL CYKOWSKI, ED ORTEGA, J AF CHRISTIANSEN, EL CYKOWSKI, ED ORTEGA, J TI HIGHLY OBLIQUE IMPACTS INTO THICK AND THIN TARGETS SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB Hypervelocity impact (HVI) tests have been conducted at the JSC Hypervelocity Impact Test Facility (HIT-F) with aluminum projectiles impacting semi-infinite (thick) and thin aluminum plates (with plate thickness to projectile diameter ratios of 6.4 and 0.14, respectively) at impact angles ranging from normal to the plate (0-degrees) to highly oblique (88-degrees). The targets were impacted by solid homogeneous aluminum spheres from 1 mm to 3.6 mm diameter. Results of the HVI tests were not unusual up to approximately 65-degrees, where impact damage is characterized as smooth craters and holes that become progressively elliptical and distended along the projectile flight path. Above 65-degrees angles, however, a transition occurs to an irregularly shaped hole in thin materials and rough bottomed crater in thick targets. Above approximately 80-degrees, multiple damage sites in the targets were formed with the damage areas separated by variable distances of undamaged target surface. Analytical and numerical simulations of the impact process at oblique angles above 65-degrees demonstrates that shock compression and release of the projectile into multiple fragments occurs before the projectile fully engages the target. The resulting projectile fragments are then responsible for the multiple impact sites observed on the targets. C1 LOCKHEED ENGN & SCI CO,HOUSTON,TX 77058. RP CHRISTIANSEN, EL (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058, USA. NR 19 TC 34 Z9 38 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 157 EP 168 DI 10.1016/0734-743X(93)90017-2 PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300016 ER PT J AU CHRISTIANSEN, EL KERR, JH AF CHRISTIANSEN, EL KERR, JH TI MESH DOUBLE-BUMPER SHIELD - A LOW-WEIGHT ALTERNATIVE FOR SPACECRAFT METEOROID AND ORBITAL DEBRIS PROTECTION SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB A number of new, innovative, low-weight shielding concepts have resulted from a decade of research at the NASA Johnson Space Center (JSC) Hypervelocity Impact Test Facility (HIT-F). One such concept, the mesh double-bumper (MDB) shield is a highly efficient method to provide protection from meteoroid and orbital debris impacts. Hypervelocity impact (HVI) testing of the MDB shield at the HIT-F and other facilities have demonstrated weight savings of approximately 30% to 50% at light gas gun velocities compared with conventional dual-sheet aluminum Whipple shields at normal impact angles. Even larger weight savings, approximately 70%, have been achieved at 45 degree oblique angles. The MDB shield was developed to demonstrate that a Whipple shield could be 'augmented' or modified to substantially improve protection by adding a mesh a short distance in front of the Whipple bumper and inserting a layer of high strength fabric between the second bumper and rear wall. From the test results, formulas have been developed that allow the design engineer to size MDB shield elements for spacecraft applications. RP CHRISTIANSEN, EL (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,MAIL CODE SN3,HOUSTON,TX 77058, USA. NR 14 TC 41 Z9 57 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 169 EP 180 DI 10.1016/0734-743X(93)90018-3 PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300017 ER PT J AU HORZ, F CINTALA, MJ BERNHARD, RP SEE, TH AF HORZ, F CINTALA, MJ BERNHARD, RP SEE, TH TI DIMENSIONALLY SCALED PENETRATION EXPERIMENTS TO EXTRACT PROJECTILE SIZES FROM SPACE EXPOSED SURFACES SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB impact experiments were conducted which employed soda-lime glass projectiles (50, 150, 1000 and 3175 mum in diameter; D(p)) and aluminum (1100 series) and Teflon (FEP) targets of variable thickness (T; ranging from thick infinite halfspace targets P(p)/T < 0.11 to foil thicknesses of a few microns P(p)/T > 100]). The objectives of these impact experiments were to determine, at constant impact velocity, the relationships between the diameter of the resulting penetration hole (D(h)), the foil thickness (T) and the projectile size (D(p)). We found that D(h), and other morphologic features such as rim structures in aluminum or spall phenomena in Teflon exhibit a systematic relationship to the target thickness. This relationship is described by polynomial fits which permit unique solutions for unknown projectile sizes (D(p)) from the measurement of T and D(h) on space-exposed surfaces. C1 LOCKHEED ENGN & SCI CO INC,HOUSTON,TX 77058. RP HORZ, F (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,SN4,HOUSTON,TX 77058, USA. NR 18 TC 10 Z9 10 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 347 EP 358 DI 10.1016/0734-743X(93)90033-4 PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300032 ER PT J AU JOLLY, WH WILLIAMSEN, JE AF JOLLY, WH WILLIAMSEN, JE TI STATISTICAL BALLISTIC LIMIT CURVE REGRESSION FOR SPACE STATION FREEDOM METEOROID ORBITAL DEBRIS SHIELDING SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB Relationships defining the ballistic limit of Space Station Freedom's dual wall protection systems have been determined. These functions were regressed from empirical data found in Marshall Space Flight Center's Hypervelocity Impact Testing Summary (HITS) for the velocity range between three and seven kilometers per second. A stepwise linear least squares regression was used to determine the coefficients of several expressions that define a ballistic limit surface. Using statistical significance indicators and graphical comparisons to other limit curves, a final set of expressions is recommended for potential use in Probability of No Critical Failure calculations for Space Station. C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. RP JOLLY, WH (reprint author), KAMAN SCI CORP,HUNTSVILLE,AL, USA. NR 10 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 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 395 EP 406 DI 10.1016/0734-743X(93)90037-8 PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300036 ER PT J AU MOG, RA HELBA, MJ ROBINSON, JH AF MOG, RA HELBA, MJ ROBINSON, JH TI DEVELOPMENT AND OPTIMIZATION OF A MULTIBUMPER DESIGN-MODEL FOR SPACECRAFT PROTECTIVE STRUCTURES SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB The development and optimization of a design model for multibumper spacecraft protective structures to defeat orbital space debris is presented. The Marshall Space Flight Center (MSFC) Materials and Processes (M&P) Laboratory Hypervelocity Impact Database is first filtered to experiments comprising metallic configurations without multilayered insulation present and for projectile velocities exceeding 2.5 km/sec. This filtering results in 337 single, double, and triple bumper hypervelocity impact experiments. Regression variables of interest include projectile diameter, density, velocity, and impact angle, bumper standoff distances, bumper densities and thicknesses, wall density and thickness, and number of bumpers. The dependent regression variable is the total number of plate penetrations, beginning with the wall and continuing through the witness plates. A unique intrinsically linear regression form, which accounts for the number of bumpers employed and invokes a posynomial with positive coefficients, positive valued independent variables, and real valued exponents) form, is chosen based on a comparison of various regression forms using correlation coefficient and F-statistic as measures of effectiveness. The least squares regression is performed followed by an ANOVA, tests of the correlation coefficient and F value, and graphical examination of residuals. Regression results indicate that statistically significant least squares is possible using the chosen form on the MSFC M&P database with small residual effects. Generic nonlinear regression forms are also investigated. The resulting regression model is next used in the formulation of a nonlinear optimization program. This program is devised to minimize the protective structures areal density subject to a limitation on total standoff distance between the first bumper and the wall. The decision variables of interest are the optimal values of the areal densities of the bumpers and wall, as well as the optimal individual standoff distances. The problem is solved using the dual transformation of geometric programming. The optimal independent variables and minimum system areal density are solved for analytically in terms of the systemic parameters. A sensitivity analysis to these parameters is then performed. Additionally the optimal number of bumpers is evaluated in this sensitivity study. The most significant results from a hypervelocity impact standpoint are that additional hypervelocity impact tests and analyses should be performed to support understanding of multiple bumper, large particle diameter, large separation, large particle mass density, various particle impact angles, and spallation phenomenologies. Additionally, more emphasis should be placed on understanding the transition regions between particle shatter, melt, and vaporization, while less emphasis should be placed on small velocity differences within these regions. Major protective structures design results indicate that for Space Station Freedom impact scenarios of interest, and within the limitations of the regressed hypervelocity impact database, at most four metallic bumpers are optimal. In particular, a transition region from optimal number of bumpers of 2 to 3 (and 3 to 4) has been identified for particle diameters in the 0.25-0.5 cm (and 1 to 1.25 cm) range. An interesting transition region from 3 to 4 optimal number of bumpers has been discovered for standoff distances between 10 and 15 cm. Furthermore, the optimal protective structures design sensitivity to impact angle is very low. Finally, the results of this investigation indicate that this combination of regression form and resulting optimization approach is useful in identifying protective structures design trends for spacecraft subject to hypervelocity impact environments. C1 NASA,MARSHALL SPACE FLIGHT CTR ED52,HUNTSVILLE,AL 35812. RP MOG, RA (reprint author), SCI APPLICAT INT CORP,HUNTSVILLE,AL 35806, USA. NR 11 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 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 519 EP 530 DI 10.1016/0734-743X(93)90048-C PG 12 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300047 ER PT J AU OLSEN, GD NOLEN, AM AF OLSEN, GD NOLEN, AM TI ADVANCED SHIELD DESIGN FOR SPACE STATION FREEDOM SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX AB Due to the predicted increase in the severity of the orbital debris environment in low-Earth orbit, the baseline meteoroid/debris protection system for Space Station Freedom (S.S. Freedom) must be augmented on orbit. In response to this need, an advanced shield design effort is underway at NASA's Marshall Space Flight Center (MSFC). The results to date of this program are presented. A series of 18 hypervelocity impact tests were conducted at MSFC's Space Debris Simulation Facility. These tests consisted of launching aluminum projectiles at velocities up to 7 km/s to evaluate various design solutions. Parameters investigated include shield material and geometric configuration (thickness, spacing, orientation, and arrangement) in relation to the baseline aluminum ''Whipple'' bumper. The results of the hypervelocity impact tests are presented. Comparison with protection offered by the baseline protection system is made. Evaluation of protection offered by candidate augmented systems and hydrocode simulations is performed. An assessment of the often-overlooked structural design considerations such as launch loads, on-orbit loads, extravehicular activity requirements, maintainability, etc., is presented. These analyses lead to the identification of a candidate system to augment the baseline meteoroid/debris protection system for the habitable modules of S.S. Freedom. RP OLSEN, GD (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812, USA. NR 19 TC 4 Z9 6 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 541 EP 549 DI 10.1016/0734-743X(93)90050-H PG 9 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300049 ER PT J AU TSOU, P GRIFFITHS, DJ AF TSOU, P GRIFFITHS, DJ TI EXPLORATORY INVESTIGATIONS OF HYPERVELOCITY INTACT CAPTURE SPECTROSCOPY SO INTERNATIONAL JOURNAL OF IMPACT ENGINEERING LA English DT Article; Proceedings Paper CT 1992 HYPERVELOCITY IMPACT SYMP CY NOV 17-19, 1992 CL AUSTIN, TX ID SHOCK-TEMPERATURE-MEASUREMENTS; PYROMETER AB The ability to capture hypervelocity projectiles intact opens a new technique available for hypervelocity research. A determination of the reactions taking place between the projectile and the capture medium during the process of intact capture is extremely important to an understanding of the intact capture phenomenon, to improving the capture technique, and to developing a theory describing the phenomenon. The intact capture of hypervelocity projectiles by underdense media generates spectra, characteristic of the material species of projectile and capture medium involved. Initial exploratory results into real-time characterization of hypervelocity intact capture techniques by spectroscopy include ultra-violet and visible spectra obtained by use of reflecting gratings, transmitting gratings, and prisms, and recorded by photographic and electronic means. Spectrometry proved to be a valuable real-time diagnostic tool for hypervelocity intact capture events, offering understanding of the interactions of the projectile and the capture medium during the initial period and providing information not obtainable by other characterizations. Preliminary results and analyses of spectra produced by the intact capture of hypervelocity aluminum spheres in polyethylene (PE), polystyrene (PS), and polyurethane (PU) foams are presented. Included are tentative emission species identifications, as well as gray body temperatures produced in the intact capture process. C1 OREGON STATE UNIV,DEPT PHYS,CORVALLIS,OR 97331. RP TSOU, P (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 11 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 0734-743X J9 INT J IMPACT ENG JI Int. J. Impact Eng. PY 1993 VL 14 IS 1-4 BP 751 EP 761 DI 10.1016/0734-743X(93)90069-J PG 11 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA LX893 UT WOS:A1993LX89300068 PM 11539565 ER PT J AU FREED, AD WALKER, KP AF FREED, AD WALKER, KP TI VISCOPLASTICITY WITH CREEP AND PLASTICITY BOUNDS SO INTERNATIONAL JOURNAL OF PLASTICITY LA English DT Article ID POWER-LAW CREEP; CONSTITUTIVE-EQUATIONS; INTERMEDIATE TEMPERATURES; STAINLESS-STEEL; DEFORMATION; MODEL; METALS; STRESS AB A viscoplastic theory is developed that reduces analytically to creep theory under steady-state conditions and becomes plasticity theory at its rate-independent bound. A viscoplastic model is then constructed by defining material functions that have close ties to the physics of inelasticity. As a consequence, this model is characterized easily - only steady-state creep data, saturated hysteresis loops, and monotonic stress/strain curves are required. The general applicability of the model is demonstrated by the characterization of three f.c.c. metals. A variety of validation experiments is also provided. C1 ENGN SCI SOFTWARE INC,SMITHFIELD,RI 02917. RP FREED, AD (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. OI Freed, Alan/0000-0002-3492-0628 NR 66 TC 62 Z9 64 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 1993 VL 9 IS 2 BP 213 EP 242 DI 10.1016/0749-6419(93)90030-T PG 30 WC Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Engineering; Materials Science; Mechanics GA KT178 UT WOS:A1993KT17800005 ER PT J AU MIELKE, SL TAWA, GJ TRUHLAR, DG SCHWENKE, DW AF MIELKE, SL TAWA, GJ TRUHLAR, DG SCHWENKE, DW TI PARTIAL WIDTHS OF FESHBACH FUNNEL RESONANCES IN THE NA(3P)CENTER-DOT-H-2 EXCIPLEX SO INTERNATIONAL JOURNAL OF QUANTUM CHEMISTRY LA English DT Article; Proceedings Paper CT International Symposium / 33rd Annual Sanibel Symposium on Atomic, Molecular, and Condensed Matter Theory and Computational Methods CY MAR 13-20, 1993 CL PONCE DE LEON CONF CTR, ST AUGUSTINE, FL SP UNIV FLORIDA, QUANTUM THEORY PROJECT HO PONCE DE LEON CONF CTR ID POTENTIAL-ENERGY SURFACES; DIABATIC REPRESENTATION; CONICAL INTERSECTIONS; COLLISIONS; SPECTROSCOPY; H-2; NAH AB We have located five zero angular momentum resonance states in the funnel associated with the lowest conical intersection of the Na(3p).H-2 exciplex, and we have characterized the four narrowest of these in terms of total and partial widths. The resonant contributions of the metastable states to state-to-state energy transfer greatly exceed the background contributions. (C) 1993 John Wiley and Sons, Inc. C1 UNIV MINNESOTA, ARMY HIGH PERFORMANCE COMP RES CTR, MINNEAPOLIS, MN 55455 USA. NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. RP MIELKE, SL (reprint author), UNIV MINNESOTA, INST SUPERCOMP, DEPT CHEM, CHEM PHYS PROGRAM, MINNEAPOLIS, MN 55455 USA. RI Mielke, Steven/B-7533-2008; schwenke, david/I-3564-2013; Truhlar, Donald/G-7076-2015 OI Mielke, Steven/0000-0002-1938-7503; Truhlar, Donald/0000-0002-7742-7294 NR 43 TC 9 Z9 9 U1 0 U2 1 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0020-7608 J9 INT J QUANTUM CHEM JI Int. J. Quantum Chem. PY 1993 SU 27 BP 621 EP 632 PG 12 WC Chemistry, Physical; Mathematics, Interdisciplinary Applications; Physics, Atomic, Molecular & Chemical SC Chemistry; Mathematics; Physics GA ML586 UT WOS:A1993ML58600054 ER PT J AU TESSLER, A AF TESSLER, A TI AN IMPROVED PLATE-THEORY OF (1,2)-ORDER FOR THICK COMPOSITE LAMINATES SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES LA English DT Article ID TRANSVERSE-SHEAR; ORDER THEORY; ELEMENT AB A new two-dimensional laminate plate theory is developed for the linear elastostatic analysis of thick composite plates. The theory employs equivalent single-layer assumptions for the displacements, transverse shear strains, and transverse normal stress. The inplane and transverse displacements are respectively linear and quadratic expansions through the laminate thickness, where the low-order expansion coefficients correspond to the variables of Reissner's first-order shear-deformable theory. The transverse shear strains and transverse normal stress are assumed to be quadratic and cubic respectively through the thickness; they are expressed in terms of the kinematic variables of the theory by means of a least-squares compatibility requirement for the transverse strains and explicit enforcement of exact traction boundary conditions on the top and bottom plate surfaces. Application of the virtual work principle results in the 10th-order equations of equilibrium and associated Poisson boundary conditions. A major advantage of this theory over other higher-order theories lies in its perfect suitability for finite element approximation: simple C0 continuous interpolations for the kinematic variables of the first-order theory (and, optionally, C-1 interpolations for the two higher-order displacements) are needed to formulate effective and robust two-dimensional plate elements capable of full three-dimensional ply-by-ply strain and stress recovery within the framework of general-purpose finite element codes. In assessing the predictive capability of the theory, analytic solutions for the problem of cylindrical bending are derived and compared with exact three-dimensional elasticity results and those of the earlier version of the {1, 2}-order plate theory. RP TESSLER, A (reprint author), NASA,LANGLEY RES CTR,COMPUTAT MECH BRANCH,MAIL STOP 240,HAMPTON,VA 23665, USA. RI Tessler, Alexander/A-4729-2009 NR 28 TC 30 Z9 30 U1 0 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7683 J9 INT J SOLIDS STRUCT JI Int. J. Solids Struct. PY 1993 VL 30 IS 7 BP 981 EP 1000 DI 10.1016/0020-7683(93)90022-Y PG 20 WC Mechanics SC Mechanics GA KN755 UT WOS:A1993KN75500006 ER PT J AU PINDERA, MJ FREED, AD ARNOLD, SM AF PINDERA, MJ FREED, AD ARNOLD, SM TI EFFECTS OF FIBER AND INTERFACIAL LAYER MORPHOLOGIES ON THE THERMOPLASTIC RESPONSE OF METAL MATRIX COMPOSITES SO INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES LA English DT Article AB This paper examines the effect of fiber and interfacial layer morphologies on thermal stress fields in metal matrix composites (MMCs). A micromechanics model based on an arbitrarily layered concentric cylinder configuration is used to calculate thermal stress fields in MMCs subjected to spatially uniform temperature changes. The fiber is modeled as a layered material with isotropic or orthotropic, elastic layers whereas the surrounding matrix, including interfacial layers, is treated as a strain-hardening, elasto-plastic, von Mises solid with temperature-dependent parameters. The solution to the boundary-value problem of an arbitrarily layered concentric cylinder under the prescribed thermal loading is obtained using the local/global stiffness matrix formulation originally developed for stress analysis of multilayered elastic media. Examples are provided that illustrate how the morphology of the SCS6 silicon carbide fiber and the use of multiple compliant layers at the fiber-matrix interface affect the evolution of residual stresses in SiC-Ti composites during fabrication cool-down. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP PINDERA, MJ (reprint author), UNIV VIRGINIA,DEPT CIVIL ENGN & APPL MECH,CHARLOTTESVILLE,VA 22903, USA. OI Freed, Alan/0000-0002-3492-0628 NR 34 TC 43 Z9 44 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0020-7683 J9 INT J SOLIDS STRUCT JI Int. J. Solids Struct. PY 1993 VL 30 IS 9 BP 1213 EP & DI 10.1016/0020-7683(93)90013-W PG 0 WC Mechanics SC Mechanics GA KU427 UT WOS:A1993KU42700004 ER PT J AU ZAK, M AF ZAK, M TI TERMINAL MODEL OF NEWTONIAN DYNAMICS SO INTERNATIONAL JOURNAL OF THEORETICAL PHYSICS LA English DT Article ID DETERMINISTIC REPRESENTATION; STABILIZATION PRINCIPLE; NEURAL NETWORKS; CHAOS; TURBULENCE; ELASTICITY; ATTRACTORS; MECHANICS AB A new type of dissipation function which does not satisfy the Lipschitz condition at equilibrium states is proposed. Newtonian dynamics supplemented by this dissipation function becomes irreversible and has a well-organized probabilistic structure. RP ZAK, M (reprint author), JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,PASADENA,CA 91109, USA. NR 29 TC 20 Z9 20 U1 0 U2 1 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0020-7748 J9 INT J THEOR PHYS JI Int. J. Theor. Phys. PD JAN PY 1993 VL 32 IS 1 BP 159 EP 190 DI 10.1007/BF00674403 PG 32 WC Physics, Multidisciplinary SC Physics GA KG680 UT WOS:A1993KG68000012 ER PT J AU NOEBE, RD BOWMAN, RR NATHAL, MV AF NOEBE, RD BOWMAN, RR NATHAL, MV TI PHYSICAL AND MECHANICAL-PROPERTIES OF THE B2 COMPOUND NIAL SO INTERNATIONAL MATERIALS REVIEWS LA English DT Review ID PLASTIC COMPRESSION PROPERTIES; CR-AL ALLOYS; TEMPERATURE TENSILE DUCTILITY; ENERGY ION-SCATTERING; OXIDE SCALE ADHERENCE; 1050 DEGREES K; GRAIN-SIZE; SINGLE-CRYSTALS; STRAIN RATE; ELECTRONIC-STRUCTURE AB Considerable work has been performed on NiAl over the past three decades, with rapid growth in research on this intermetallic occurring in the past few years because of recent interest in this material for electronic and high temperature structural applications. However, many physical properties and the controlling fracture and deformation mechanisms over certain temperature regimes are still debated. This is due in part to the incomplete characteristisation of many of the alloys previously investigated. Fragmentary data on processing conditions, chemistry, microstructure, and the apparent difficulty in accurately measuring composition have made direct comparison between individual studies sometimes tenuous. The purpose of this review is to summarise all available mechanical and pertinent physical properties of NiAl, stressing the most recent investigations, in an attempt to understand the behaviour of NiAl and its alloys over a broad temperature range. RP NOEBE, RD (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 388 TC 563 Z9 586 U1 5 U2 71 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 0950-6608 J9 INT MATER REV JI Int. Mater. Rev. PY 1993 VL 38 IS 4 BP 193 EP 232 PG 40 WC Materials Science, Multidisciplinary SC Materials Science GA PP502 UT WOS:A1993PP50200002 ER PT B AU GREENFELD, I AF GREENFELD, I GP IEEE TI PAPER WHAT SO IPCC 93 PROCEEDINGS - THE NEW FACE OF TECHNICAL COMMUNICATION: PEOPLE, PROCESSES, PRODUCTS LA English DT Proceedings Paper CT IEEE Professional-Communication-Society Conference on The New Face of Technical Communication - People, Processes, Products CY OCT 05-08, 1993 CL PHILADELPHIA, PA SP IEEE, PROFESS COMMUN SOC C1 NASA,LEWIS RES CTR,SPACE STN FREEDOM DIRECTORATE,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 PY 1993 BP 113 EP 116 PG 4 WC Communication SC Communication GA BC46G UT WOS:A1993BC46G00024 ER PT J AU Young, PR Slemp, WS AF Young, PR Slemp, WS TI Space environmental effects on selected long duration exposure facility polymeric materials SO IRRADIATION OF POLYMERIC MATERIALS SE ACS SYMPOSIUM SERIES LA English DT Review AB The National Aeronautics and Space Administration's Long Duration Exposure Facility (LDEF) provided a unique environmental exposure of a wide variety of materials. The effects of 5 years and 9 months of low-Earth orbit (LEG) exposure of these materials to atomic oxygen (AO), ultraviolet and particulate radiation, meteorid and debris, vacuum, contamination, and thermal cycling is providing a data base unparalleled in the history of space environment research. Working through the Environmental Effects on Materials Special Investigation Group (MSIG), a number of polymeric materials in various processed forms have been assembled from LDEF investigators for analysis at the NASA Langley Research Center. Specimens include silvered perfluorinated ethylene propylene (FEP) Teflon thermal blanket material, polysulfone and epoxy matrix resin/graphite fiber reinforced composites, and several high performance polymer films. These samples came from numerous spacecraft locations and, thus, received different environmental exposures. This paper reports the chemical characterization of these materials. The results of infrared, thermal, x-ray photoelectron, acid various solution property analyses have shown no significant change at the molecular level in the polymer that survived exposure. However, scanning electron and scanning tunneling microscopies show resin loss and a texturing of the surface of some specimens which resulted in a change in optical properties. The potential effect of a silicon-containing molecular contamination on these materials is addressed, The possibility of continued post-exposure degradation of some polymeric films is also proposed. RP Young, PR (reprint author), NASA,LANGLEY RES CTR,POLYMER MAT BRANCH,MAIL STOP 226,HAMPTON,VA 23665, USA. NR 25 TC 10 Z9 10 U1 0 U2 7 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 SN 0097-6156 J9 ACS SYM SER PY 1993 VL 527 BP 278 EP 304 PG 27 WC Materials Science, Multidisciplinary; Polymer Science SC Materials Science; Polymer Science GA BE46Y UT WOS:A1993BE46Y00018 ER PT J AU REINMANN, JJ ADAMS, D AF REINMANN, JJ ADAMS, D TI AERODYNAMIC EFFECTS OF DEICING AND ANTIICING FLUIDS SO JOURNAL OF AIRCRAFT LA English DT Editorial Material RP REINMANN, JJ (reprint author), NASA,LEWIS RES CTR,DIV PROP SYST,ICING & CRYOGEN TECHNOL BRANCH,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 1993 VL 30 IS 1 BP 8 EP 9 DI 10.2514/3.46297 PG 2 WC Engineering, Aerospace SC Engineering GA KM852 UT WOS:A1993KM85200002 ER PT J AU HARRIS, CE HEYMAN, JS AF HARRIS, CE HEYMAN, JS TI OVERVIEW OF NASA RESEARCH RELATED TO THE AGING COMMERCIAL TRANSPORT FLEET SO JOURNAL OF AIRCRAFT LA English DT Article AB This article describes the research activities of the NASA airframe structural integrity program for the aging commercial transport fleet. Advanced analysis methods are under development to predict the fatigue crack growth in complex built-up shell structures. Innovative nondestructive examination technologies are under development to provide large-area inspection capability to detect corrosion, disbonds, and fatigue cracks. The ultimate goal of this interdisciplinary program is to develop and transfer advanced technology to the airline operators and airframe manufacturers. This program is being conducted cooperatively with the FAA and the U.S. industry. RP HARRIS, CE (reprint author), NASA,LANGLEY RES CTR,MECH MAT BRANCH,HAMPTON,VA 23665, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1993 VL 30 IS 1 BP 64 EP 68 DI 10.2514/3.46306 PG 5 WC Engineering, Aerospace SC Engineering GA KM852 UT WOS:A1993KM85200011 ER PT J AU LIAW, DG AF LIAW, DG TI SUPERSONIC FLUTTER OF LAMINATED THIN PLATES WITH THERMAL EFFECTS SO JOURNAL OF AIRCRAFT LA English DT Article AB A 48 degree-of-freedom rectangular laminated thin plate finite element including the effects of thermal and aerodynamic loadings is formulated to study the buckling and supersonic flutter characteristics of thin plate structures. Interactive effects between the critical temperature difference and critical aerodynamic pressure for the plates are also studied. The element formulation is based on the classical lamination theory. The aerodynamic pressure due to supersonic potential flow is described by a two-dimensional steady supersonic theory. The element formulation and solution procedure are evaluated by comparing results of three examples with existing alternative solutions. The practical applicability is demonstrated by performing buckling and supersonic flutter analyses of laminated thin plates under various types of temperature distributions. Based on the numerical results, the effects of aspect ratio, ratio of thermal expansion coefficients, fiber orientation, type of temperature distribution, and flow angularity on these examples are discussed. RP LIAW, DG (reprint author), NASA,LEWIS RES CTR GRP,CLEVELAND,OH 44135, USA. NR 0 TC 15 Z9 15 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 1993 VL 30 IS 1 BP 105 EP 111 DI 10.2514/3.46313 PG 7 WC Engineering, Aerospace SC Engineering GA KM852 UT WOS:A1993KM85200018 ER PT J AU BENNETT, RM DANSBERRY, BE FARMER, MG ECKSTROM, CV SEIDEL, DA RIVERA, JA AF BENNETT, RM DANSBERRY, BE FARMER, MG ECKSTROM, CV SEIDEL, DA RIVERA, JA TI TRANSONIC SHOCK-INDUCED DYNAMICS OF A FLEXIBLE WING WITH A THICK AIRFOIL SO JOURNAL OF AIRCRAFT LA English DT Article AB Transonic shock-boundary-layer oscillations occur on rigid models over a small range of Mach numbers on thick circular-arc airfoils. Extensive tests and analyses of this phenomena have been made in the past, but essentially all of them were for rigid models. A simple flexible wing model with an 18% circular-arc airfoil was constructed and tested in the Langley transonic dynamics tunnel to investigate the dynamic characteristics that a wing might have under these conditions. In the region of shock-boundary-layer oscillations, buffeting of the first bending mode was obtained. This mode was well-separated in frequency from the shock-boundary-layer oscillations. A limit-cycle oscillation was also measured in a ''third bending-like'' mode, involving wing vertical bending and splitter plate motion, which was in the frequency range of the shock-boundary-layer oscillations. Several model configurations were tested, and a few potential fixes were investigated. RP BENNETT, RM (reprint author), NASA,LANGLEY RES CTR,UNSTEADY AERODYNAM BRANCH,HAMPTON,VA 23665, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1993 VL 30 IS 1 BP 112 EP 118 DI 10.2514/3.46314 PG 7 WC Engineering, Aerospace SC Engineering GA KM852 UT WOS:A1993KM85200019 ER PT J AU HUEBNER, LD AF HUEBNER, LD TI COMPUTATIONAL FLOWFIELDS FOR STATIC TESTING OF POWERED HYPERSONIC AFTBODY MODELS SO JOURNAL OF AIRCRAFT LA English DT Note RP HUEBNER, LD (reprint author), NASA,LANGLEY RES CTR,SUPERSON AERODYNAM BRANCH,DIV APPL AERODYNAM,M-S 413,HAMPTON,VA 23665, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0021-8669 J9 J AIRCRAFT JI J. Aircr. PD JAN-FEB PY 1993 VL 30 IS 1 BP 135 EP 137 DI 10.2514/3.46320 PG 3 WC Engineering, Aerospace SC Engineering GA KM852 UT WOS:A1993KM85200025 ER PT J AU ROSENFELD, D WOLFF, DB ATLAS, D AF ROSENFELD, D WOLFF, DB ATLAS, D TI GENERAL PROBABILITY-MATCHED RELATIONS BETWEEN RADAR REFLECTIVITY AND RAIN RATE SO JOURNAL OF APPLIED METEOROLOGY LA English DT Article ID CONVECTIVE RAINFALL; AREA INTEGRALS; GAUGE; TIME AB A method of deriving the relation between radar- observed reflectivities Z(e) and gauge-measured rain intensity R is presented. It is based on matching the probabilities of the two variables. The observed reflectivity is often very different from the true reflectivity near the surface due to the averaging of the real reflectivity field aloft by the beam, path attenuation, and variations in the drop-size distribution (DSD) between the pulse volume and the surface. The probability-matching method (PMM) inherently accounts for all of these differences on average. The formulation of the Z(e)-R functions is constrained such that 1 ) the radar-retrieved probability density function (PDF) of R is identical to the gauge-measured PDF, and 2) the fraction of the time that it is raining is identical for both the radar and for simultaneous, collocated gauge measurements. This ensures that the rain measured by the radar is equal to that observed at the gauges. The resultant Z(e)-R functions are not constrained to be power laws. The method was applied to data obtained by a 1.65-degrees beamwidth C-band radar and 22 gauges located near Darwin, Australia. The data were stratified by range and also by rainfall type. The resultant Z(e)-R functions manifest the nature of the PDF of R and the manner in which the beam effects the PDF of Z(e) through beam averaging and the average effects of C-band attenuation. In this regard, the Z(e)-R functions reflect the nature of the precipitation. This provides the hope for greatly improved rainfall measurements, especially for climatic purposes and for sufficiently large space-time domains. In those climates where the storms closely resemble one another, the relations may be used for individual storms over their lifetime or for a few storms at any one moment. The time-space domain in this study was sufficient for the instability driven convective storm in Darwin but too small for the synoptic-scale systems. The functions show a particularly strong range dependence for rain types characterized by large reflectivity gradients; that is, those in which the beam-average Z(e) differs most from the actual reflectivity Z. Because of the dominance of the beam effects relative to those due to variations in DSD, the use of radar polarimetry will improve the accuracy of rainfall retrievals. based on specification of the DSD alone, only with narrow beams or at short ranges and for small-scale, short-term purposes when the probability based relations may not be representative. Polarimetry is also valuable for smaller space-time domains than those for which the probability matched Z(e)-R relations may be valid. C1 NASA,GODDARD SPACE FLIGHT CTR,CODE 9101,GREENBELT,MD 20771. HEBREW UNIV JERUSALEM,JERUSALEM,ISRAEL. APPL RES CORP,LANDOVER,MD. JET PROP LAB,PASADENA,CA 91109. RI Rosenfeld, Daniel/F-6077-2016 OI Rosenfeld, Daniel/0000-0002-0784-7656 NR 34 TC 134 Z9 134 U1 2 U2 3 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 1993 VL 32 IS 1 BP 50 EP 72 DI 10.1175/1520-0450(1993)032<0050:GPMRBR>2.0.CO;2 PG 23 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KG488 UT WOS:A1993KG48800004 ER PT J AU FATEMI, NS WEIZER, VG AF FATEMI, NS WEIZER, VG TI THE STRUCTURAL AND ELECTRICAL-PROPERTIES OF LOW-RESISTANCE NI CONTACTS TO INP SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB We have investigated the electrical and metallurgical behavior of the Ni-InP contact system, Specific contact resistivity (R(c)) values in the low 10(-7) OMEGA cm2 range are achieved with Ni-only contacts on n-InP (Si: 1.7 x 10(18) cm-3) by sintering at 400-degrees-C for several minutes. The post-sinter contact metallization consists of three layers, arranged in the sequence: InP/Ni3P/Ni2P/In. Extended sintering (40 min) at 400-degrees-C brings about a rise in R(c) to the 10(-4) OMEGA cm2 range. After extended sintering, the contact metallization is found to consist of only two layers, arranged in the sequence: InP/Ni2P/In. Based on the correlation between low R(c) and the presence of Ni3P at the metal-InP interface, it is suggested that the presence of Ni3P is the cause of the low R(c) values. We show that the sintering schedule used to achieve low values of R(c) is accompanied by substantial metal-InP interdiffusion that results in severe device degradation, We show, finally, that it is possible to achieve low values of R(c) without incurring these device-destroying metallurgical interactions by introducing a thin layer of Ni3P between the InP and the current carrying metallization. C1 NASA, LEWIS RES CTR, CLEVELAND, OH 44135 USA. RP FATEMI, NS (reprint author), SVERDRUP TECHNOL INC, LEWIS RES CTR GRP, 21000 BROOKPARK RD, CLEVELAND, OH 44135 USA. NR 8 TC 13 Z9 13 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD JAN 1 PY 1993 VL 73 IS 1 BP 289 EP 295 DI 10.1063/1.353902 PG 7 WC Physics, Applied SC Physics GA KE714 UT WOS:A1993KE71400039 ER PT J AU MELCHIOR, FM FORTNEY, SM AF MELCHIOR, FM FORTNEY, SM TI ORTHOSTATIC INTOLERANCE DURING A 13-DAY BED REST DOES NOT RESULT FROM INCREASED LEG COMPLIANCE SO JOURNAL OF APPLIED PHYSIOLOGY LA English DT Article DE VENOUS COMPLIANCE; LEG VOLUMES; LEG BLOOD FLOW ID HEAD-DOWN TILT; BEDREST; SHIFTS; FLUID AB Increased leg compliance (LC) has been proposed as a mechanism for orthostatic intolerance after spaceflight or bed rest. Using venous occlusion plethysmography with mercury-in-Silastic strain gauge, we evaluated LC before, during, and after a 13-day head-down (-6-degrees) bed rest in 10 men. LC was measured by the relationship between the increased calf areas (in cm2) at thigh cuff occlusions of 20,30,50,70, and 80 mmHg. Orthostatic tolerance was evaluated by a presyncopal-limited lower body negative pressure test (PSL-LBNP) before and after bed rest. The 10 subjects were divided into TOL (n = 5) and INT (n = 5) groups for which the orthostatic tolerance was similar and lower after bed rest, respectively. For TOL (INT) before bed rest, calf area increases were 2.2 +/- 0.5 (SE) (1.3 +/-0.4), 3.5 +/- 0.7 (2.3 +/- 0.5), 5.0 +/- 0.9 (3.5 +/- 0.6), 5.6 +/- 0.9 (4.4 +/- 0.6), and 6.4 +/- 1.1 (4.7 +/- 0.6) cm2 for thigh occlusion pressures of 20, 30, 50, 70, and 80 mmHg, respectively. Neither for INT nor for TOL were these results significantly changed by bed rest. These results suggest that other mechanisms than increased LC have to be taken into account to explain the decreased orthostatic tolerance induced by this 13-day bed rest. C1 NASA,JOHNSON SPACE CTR,SPACE BIOMED RES INST,MAIL CODE SD-5,HOUSTON,TX 77058. NR 20 TC 29 Z9 30 U1 0 U2 0 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 8750-7587 J9 J APPL PHYSIOL JI J. Appl. Physiol. PD JAN PY 1993 VL 74 IS 1 BP 286 EP 292 PG 7 WC Physiology; Sport Sciences SC Physiology; Sport Sciences GA KJ480 UT WOS:A1993KJ48000039 PM 8444705 ER PT J AU FREY, MAB MADER, TH BAGIAN, JP CHARLES, JB MEEHAN, RT AF FREY, MAB MADER, TH BAGIAN, JP CHARLES, JB MEEHAN, RT TI CEREBRAL BLOOD VELOCITY AND OTHER CARDIOVASCULAR-RESPONSES TO 2 DAYS OF HEAD-DOWN TILT SO JOURNAL OF APPLIED PHYSIOLOGY LA English DT Article DE TRANSCRANIAL DOPPLER; HEART RATE; CARDIAC OUTPUT; ARTERIAL PRESSURE; INTRAOCULAR PRESSURE; RETINAL VESSEL DIAMETER ID INTRAOCULAR-PRESSURE; FLOW AB Space-flight induces a cephalad redistribution of fluid volume and blood flow within the human body, and space motion sickness, which is a problem during the first few days of spaceflight, could be related to these changes in fluid status and in blood flow of the cerebrum and vestibular system. To evaluate possible changes in cerebral blood flow during simulated weightlessness, we measured blood velocity in the middle cerebral artery (MCA) along with retinal vascular diameters, intraocular pressure, impedance cardiography, and sphygmomanometry on nine men (26.2 +/- 6.6 yr) morning and evening for 2 days during continuous 10-degrees head-down tilt (HDT). When subjects went from seated to head-down bed rest, their heart rate and retinal diameters decreased, and intraocular pressures increased. After 48 h of HDT, blood flow velocity in the MCA was decreased and thoracic impedance was increased, indicating less fluid in the thorax. Percent changes in blood flow velocities in the MCA after 48 h of HDT were inversely correlated with percent changes in retinal vascular diameters. Blood flow velocities in the MCA were inversely correlated (intersubject) with arterial pressures and retinal vascular diameters. Heart rate, stroke volume, cardiac output, systolic arterial pressure, and at times pulse pressure and blood flow velocities in the MCA were greater in the evening. Total peripheral resistance was higher in the morning. Although cerebral blood velocity is reduced after subjects are head down for 2 days, the inverse relationship with retinal vessel diameters, which have control analogous to that of cerebral vessels, indicates cerebral blood flow is not reduced. C1 USA,MADIGAN ARMY MED CTR,TACOMA,WA 98493. UNIV SPACE RES ASSOC,HOUSTON,TX 77058. NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. UNIV TEXAS,MED BRANCH,MED BRANCH,DEPT INTERNAL MED,GALVESTON,TX 77550. FU NCRR NIH HHS [MOI RR-00073] NR 27 TC 40 Z9 47 U1 0 U2 5 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 8750-7587 J9 J APPL PHYSIOL JI J. Appl. Physiol. PD JAN PY 1993 VL 74 IS 1 BP 319 EP 325 PG 7 WC Physiology; Sport Sciences SC Physiology; Sport Sciences GA KJ480 UT WOS:A1993KJ48000044 PM 8444709 ER PT J AU CAMYPEYRET, C FLAUD, JM PERRIN, A RINSLAND, CP GOLDMAN, A MURCRAY, FJ AF CAMYPEYRET, C FLAUD, JM PERRIN, A RINSLAND, CP GOLDMAN, A MURCRAY, FJ TI STRATOSPHERIC N2O5,CH4, AND N2O PROFILES FROM IR SOLAR OCCULTATION SPECTRA SO JOURNAL OF ATMOSPHERIC CHEMISTRY LA English DT Article DE ATMOSPHERIC COMPOSITION; MIDDLE ATMOSPHERE; STRATOSPHERE; FOURIER TRANSFORM SPECTROSCOPY; BALLOON MEASUREMENTS; NITROGEN OXIDES; METHANE ID FOURIER-TRANSFORM SPECTROSCOPY; NO2 AB Stratospheric volume mixing ratio profiles of N2O5, CH4, and N2O have been retrieved from a set of 0.052 cm-1 resolution (FWHM) solar occultation spectra recorded at sunrise during a balloon flight from Aire sur l'Adour, France (44-degrees-N latitude) on 12 October 1990. The N2O5 resultS have been derived from measurements of the integrated absorption by the 1246 cm-1 band. Assuming a total intensity of 4.32 x 10(-17) cm-1/molecule cm-2 independent of temperature, the retrieved N2O5 volume mixing ratios in ppbv (parts per billion by volume, 10(-9)), interpolated to 2 km height spacings, are 1.64 +/- 0.49 at 37.5 km, 1.92 +/- 0.56 at 35.5 km, 2.06 +/- 0.47 at 33.5 km, 1.95 +/- 0.42 at 31.5 km, 1.60 +/- 0.33 at 29.5 km, 1.26 +/- 0.28 at 27.5 km, and 0.85 +/- 0.20 at 25.5 km. Error bars indicate the estimated 1-sigma uncertainty including the error in the total band intensity (+/- 20% has been assumed). The retrieved profiles are compared with previous measurements and photochemical model results. C1 NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23665. UNIV DENVER,DEPT PHYS,DENVER,CO 80210. RP CAMYPEYRET, C (reprint author), UNIV PARIS 06,PHYS MOLEC & APPLICAT LAB,CNRS,F-75230 PARIS 05,FRANCE. NR 21 TC 24 Z9 24 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0167-7764 J9 J ATMOS CHEM JI J. Atmos. Chem. PD JAN PY 1993 VL 16 IS 1 BP 31 EP 40 DI 10.1007/BF00696622 PG 10 WC Environmental Sciences; Meteorology & Atmospheric Sciences SC Environmental Sciences & Ecology; Meteorology & Atmospheric Sciences GA KJ263 UT WOS:A1993KJ26300003 ER PT J AU BENJAMIN, I POHORILLE, A AF BENJAMIN, I POHORILLE, A TI ISOMERIZATION REACTION DYNAMICS AND EQUILIBRIUM AT THE LIQUID VAPOR INTERFACE OF WATER - A MOLECULAR-DYNAMICS STUDY SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID CONFORMATIONAL EQUILIBRIA; PICOSECOND DYNAMICS; N-BUTANE; 1,2-DICHLOROETHANE; SIMULATION; GENERATION; SOLVATION; ION AB The gauche-trans isomerization reaction of 1,2-dichloroethane at the liquid-vapor interface of water is studied using molecular-dynamics computer simulations. The solvent bulk and surface effects on the torsional potential of mean force and on barrier recrossing dynamics are computed. The isomerization reaction involves a large change in the electric dipole moment, and as a result the trans/gauche ratio is considerably affected by the transition from the bulk solvent to the surface. Reactive flux correlation function calculations of the reaction rate reveal that deviation from the transition-state theory due to barrier recrossing is greater at the surface than in the bulk water. This suggests that the system exhibits non-Rice-Ramsperger-Kassel-Marcus behavior due to the weak solvent-solute coupling at the water liquid-vapor interface. C1 UNIV CALIF SAN FRANCISCO,DEPT PHARMACEUT CHEM,SAN FRANCISCO,CA 94143. NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RP BENJAMIN, I (reprint author), UNIV CALIF SANTA CRUZ,DEPT CHEM,SANTA CRUZ,CA 95064, USA. FU NCI NIH HHS [NCA-2 315] NR 35 TC 33 Z9 33 U1 0 U2 3 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-9606 J9 J CHEM PHYS JI J. Chem. Phys. PD JAN 1 PY 1993 VL 98 IS 1 BP 236 EP 242 DI 10.1063/1.465094 PG 7 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA KF406 UT WOS:A1993KF40600028 PM 11539443 ER PT J AU GREEN, S AF GREEN, S TI RAMAN LINEWIDTHS AND ROTATIONALLY INELASTIC-COLLISION RATES IN NITROGEN SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID ENERGY-TRANSFER RATES; Q-BRANCH; ANGULAR-MOMENTUM; SCATTERING CALCULATIONS; THEORETICAL-ANALYSIS; SPECTRA; N-2; APPROXIMATION; EXCITATION; CO AB Using the N2-N2 interaction potential of van der Avoird et al. [J. Chem. Phys. 84, 1629 (1986)] rotationally inelastic collision cross sections have been computed within the infinite order sudden (IOS) approximation, assuming the molecules are distinguishable. Methods for enforcing detailed balance and correcting for effects of inelasticity, which are ignored in the IOS approximation, are considered, including the energy corrected sudden (ECS) method. Suitably averaged cross sections are compared with experimental Raman Q-branch linewidths for temperatures from 295 to 1500 K and with recently measured room temperature state-to-state rates. Agreement is rather good, especially if ECS corrections are applied. RP NASA, GODDARD SPACE FLIGHT CTR, INST SPACE STUDIES, NEW YORK, NY 10025 USA. NR 41 TC 15 Z9 15 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD JAN 1 PY 1993 VL 98 IS 1 BP 257 EP 268 DI 10.1063/1.464671 PG 12 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA KF406 UT WOS:A1993KF40600030 ER PT J AU CHATFIELD, DC FRIEDMAN, RS LYNCH, GC TRUHLAR, DG SCHWENKE, DW AF CHATFIELD, DC FRIEDMAN, RS LYNCH, GC TRUHLAR, DG SCHWENKE, DW TI THE NATURE AND ROLE OF QUANTIZED TRANSITION-STATES IN THE ACCURATE QUANTUM DYNAMICS OF THE REACTION O+H2-]OH+H SO JOURNAL OF CHEMICAL PHYSICS LA English DT Review ID MECHANICAL REACTION PROBABILITIES; POTENTIAL-ENERGY SURFACE; CUMULATIVE REACTION PROBABILITIES; CHEMICAL-REACTIONS; REACTION-RATES; PHOTODETACHMENT SPECTRUM; RATE CONSTANTS; SEMICLASSICAL QUANTIZATION; TUNNELING CALCULATIONS; COLLINEAR REACTIONS AB Accurate quantum mechanical dynamics calculations are reported for the reaction probabilities of O(3P) + H-2 --> OH + H with zero total angular momentum on a single potential energy surface. The results show that the reactive flux is gated by quantized transition states up to the highest energy studied, which corresponds to a total energy of 1.90 eV. The quantized transition states are assigned and compared to vibrationally adiabatic barrier maxima; their widths and transmission coefficients are determined; and they are classified as variational, supernumerary of the first kind, and supernumerary of the second kind. Their effects on state-selected and state-to-state reactivity are discussed in detail. C1 UNIV MINNESOTA, ARMY HIGH PERFORMANCE COMP RES CTR, MINNEAPOLIS, MN 55455 USA. NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. RP UNIV MINNESOTA, INST SUPERCOMP, DEPT CHEM, MINNEAPOLIS, MN 55455 USA. RI schwenke, david/I-3564-2013; Truhlar, Donald/G-7076-2015 OI Truhlar, Donald/0000-0002-7742-7294 NR 114 TC 56 Z9 57 U1 4 U2 7 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD JAN 1 PY 1993 VL 98 IS 1 BP 342 EP 362 DI 10.1063/1.464627 PG 21 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA KF406 UT WOS:A1993KF40600040 ER PT J AU SHEN, MZ SCHAEFER, HF PARTRIDGE, H AF SHEN, MZ SCHAEFER, HF PARTRIDGE, H TI TUNGSTEN HEXAHYDRIDE (WH6) - AN EQUILIBRIUM GEOMETRY FAR FROM OCTAHEDRAL SO JOURNAL OF CHEMICAL PHYSICS LA English DT Article ID HARTREE-FOCK THEORY; BASIS-SETS; MOLECULAR CALCULATIONS; ABINITIO CALCULATIONS; ELECTRON CORRELATION; DERIVATIVES; MO; COMPLEXES; ORBITALS AB Ab initio all-electron quantum mechanical methods were applied to the tungsten hexahydride (WH6) molecule using very large basis sets. Seven distinct structures were investigated with full geometry optimizations at the self-consistent field (SCF) level of theory. The effects of electron correlation were estimated with second-order Moller-Plesset perturbation theory (MP2), modified coupled pair functional (MCPF) method, and the coupled cluster with single and double excitations (CCSD) method, and relativistic effects estimated using the Cowan-Griffin (mass-velocity and Darwin) corrections. Our results suggest that the ground state of the tungsten hexahydride (WH6) molecule is a closed-shell triangular prism belonging to the C3nu point group, with a set of three hydrogens stacked on top of another set of three hydrogens. From the perspective of inorganic chemistry, it is truly remarkable that the octahedral structure lies 130 kcal/mol above the C3nu ground state. Furthermore, these results imply major qualitative differences between WH6 and the well-known W(CH3)6 molecule. Another C3nu structure, with one set of three hydrogens staggered with respect to the other set, is energetically nearby. With MCPF and relativistic corrections at the SCF optimized geometry, a third low-lying structure belonging to the C5nu point group is virtually degenerate with the triangular prism C3nu structure. C1 NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. RP UNIV GEORGIA, CTR COMPUTAT QUANTUM CHEM, ATHENS, GA 30602 USA. NR 40 TC 48 Z9 48 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 1305 WALT WHITMAN RD, STE 300, MELVILLE, NY 11747-4501 USA SN 0021-9606 EI 1089-7690 J9 J CHEM PHYS JI J. Chem. Phys. PD JAN 1 PY 1993 VL 98 IS 1 BP 508 EP 521 DI 10.1063/1.464646 PG 14 WC Chemistry, Physical; Physics, Atomic, Molecular & Chemical SC Chemistry; Physics GA KF406 UT WOS:A1993KF40600057 ER PT J AU CHEN, TC PFAENDTNER, J AF CHEN, TC PFAENDTNER, J TI ON THE ATMOSPHERIC BRANCH OF THE HYDROLOGICAL CYCLE SO JOURNAL OF CLIMATE LA English DT Note ID WATER-VAPOR FLUX; FGGE AB Recently, HIRS2/MSU data have been used at the Goddard Laboratory for Atmospheres (GLA) to generate global precipitation estimates. A synergistic mix of the GLA precipitation, together with the global wind and moisture fields produced by the Global Data Assimilation System of the European Centre for Medium-Range Weather Forecasts, was employed to delineate the atmospheric branch of the hydrological cycle during the 1978/79 Northern Hemisphere winter and the 1979 Northern Hemisphere summer. The transport of water vapor from source to sink regions was illustrated geographically by a combination of the divergent component of water vapor transport and precipitation. C1 NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB,GREENBELT,MD 20771. RP CHEN, TC (reprint author), IOWA STATE UNIV SCI & TECHNOL,DEPT GEOL & ATMOSPHER SCI,3010 AGRON BLDG,AMES,IA 50011, USA. NR 14 TC 21 Z9 24 U1 0 U2 3 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0894-8755 J9 J CLIMATE JI J. Clim. PD JAN PY 1993 VL 6 IS 1 BP 161 EP 167 DI 10.1175/1520-0442(1993)006<0161:OTABOT>2.0.CO;2 PG 7 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KY097 UT WOS:A1993KY09700013 ER PT J AU KEYSER, LF LEU, MT AF KEYSER, LF LEU, MT TI SURFACE-AREAS AND POROSITIES OF ICES USED TO SIMULATE STRATOSPHERIC CLOUDS SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Article ID NITRIC-ACID TRIHYDRATE; HETEROGENEOUS REACTIONS; ASTROPHYSICAL IMPLICATIONS; HYDROGEN-CHLORIDE; AMORPHOUS ICE; OZONE; NITRATE RP KEYSER, LF (reprint author), JET PROP LAB,DIV EARTH & SPACE SCI,PASADENA,CA 91109, USA. NR 40 TC 65 Z9 67 U1 1 U2 6 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9797 J9 J COLLOID INTERF SCI JI J. Colloid Interface Sci. PD JAN PY 1993 VL 155 IS 1 BP 137 EP 145 DI 10.1006/jcis.1993.1018 PG 9 WC Chemistry, Physical SC Chemistry GA KK646 UT WOS:A1993KK64600018 ER PT J AU SULLIVAN, RM AF SULLIVAN, RM TI A COUPLED SOLUTION METHOD FOR PREDICTING THE THERMOSTRUCTURAL RESPONSE OF DECOMPOSING, EXPANDING POLYMERIC COMPOSITES SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article ID MATHEMATICAL-MODEL; THERMAL RESPONSE; HIGH-TEMPERATURES; WOOD PYROLYSIS AB A new solution method has recently been developed to analyze the thermal and structural response of polymeric composites during chemical decomposition. This method extends the numerical approach of previous researchers by including the solution for the structural response of the decomposing material. The method couples the equations of energy, mass transport and momentum and solves these equations simultaneously at each time step. The result is a comprehensive numerical scheme for assessing composite stresses due to chemical decomposition. In this article, the coupled solution method is applied to analyze the response of a glass-phenolic composite during its chemical decomposition. Comparisons are made between the numerical results and those obtained experimentally. In addition to verification of the coupled solution method, the present solution offers additional insight into certain physical events which occur during chemical decomposition. RP SULLIVAN, RM (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,ED24,HUNTSVILLE,AL 35812, USA. NR 26 TC 20 Z9 26 U1 2 U2 8 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 1993 VL 27 IS 4 BP 408 EP 434 DI 10.1177/002199839302700404 PG 27 WC Materials Science, Composites SC Materials Science GA KV387 UT WOS:A1993KV38700004 ER PT J AU JEGLEY, D AF JEGLEY, D TI IMPACT-DAMAGED GRAPHITE-THERMOPLASTIC TRAPEZOIDAL-CORRUGATION SANDWICH AND SEMI-SANDWICH PANELS SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article AB The results of a study of the effects of impact damage on compression-loaded trapezoidal-corrugation sandwich and semi-sandwich graphite-thermoplastic panels are presented. Sandwich panels with two identical face sheets and a trapezoidal corrugated core between them, and semi-sandwich panels with a corrugation attached to a single skin are considered in this study. Panels were designed, fabricated and tested. The panels were made using the manufacturing process of thermoforming, a less-commonly used technique for fabricating composite parts. Experimental results for unimpacted control panels and panels subjected to impact damage prior to loading are presented. Little work can be found in the literature about these configurations of thermoformed panels. RP JEGLEY, D (reprint author), NASA,LANGLEY RES CTR,MAIL STOP 190,HAMPTON,VA 23665, USA. NR 4 TC 36 Z9 36 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 1993 VL 27 IS 5 BP 526 EP 538 DI 10.1177/002199839302700505 PG 13 WC Materials Science, Composites SC Materials Science GA KY374 UT WOS:A1993KY37400005 ER PT J AU MITAL, SK MURTHY, PLN CHAMIS, CC AF MITAL, SK MURTHY, PLN CHAMIS, CC TI INTERFACIAL MICROFRACTURE IN HIGH-TEMPERATURE METAL-MATRIX COMPOSITES SO JOURNAL OF COMPOSITE MATERIALS LA English DT Article AB Two computational simulation approaches developed at NASA-Lewis Research Center are described for interfacial microfracture and its effect on high temperature metal matrix composites' (HT-MMC) global behavior. The first approach is based upon micromechanics and a nonlinear material behavior model to account for the material nonlinearities arising due to temperature, stress etc. The second approach is based upon a judicious use of three-dimensional finite element analysis. Both of these approaches have been used in the computational simulation of the effects of interfacial properties and microfracture on the high temperature metal matrix composite global behavior. Results presented demonstrate that computational simulation procedures can be effectively used to characterize interface/interphase and its effect on the complex behavior of high temperature metal matrix composites. C1 UNIV TOLEDO,TOLEDO,OH 43606. RP MITAL, SK (reprint author), NASA,LEWIS RES CTR,STRUCT MECH BRANCH,MS 49-8,CLEVELAND,OH 44135, USA. NR 15 TC 16 Z9 21 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 1993 VL 27 IS 17 BP 1678 EP 1694 DI 10.1177/002199839302701703 PG 17 WC Materials Science, Composites SC Materials Science GA ME679 UT WOS:A1993ME67900003 ER PT J AU SALEEM, M PULLIAM, T CHEER, AY AF SALEEM, M PULLIAM, T CHEER, AY TI ACCELERATION OF CONVERGENCE AND SPECTRUM TRANSFORMATION OF IMPLICIT FINITE-DIFFERENCE OPERATORS ASSOCIATED WITH NAVIER-STOKES EQUATIONS SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article C1 NASA,AMES RES CTR,DIV COMPUTAT PHYS,MOFFETT FIELD,CA 94035. UNIV CALIF DAVIS,DEPT MATH,DAVIS,CA 95616. RP SALEEM, M (reprint author), CALIF STATE UNIV SAN JOSE,DEPT MATH & COMP SCI,SAN JOSE,CA 95192, USA. NR 17 TC 0 Z9 0 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 1993 VL 104 IS 1 BP 1 EP 13 DI 10.1006/jcph.1993.1001 PG 13 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA KF519 UT WOS:A1993KF51900001 ER PT J AU LOH, CY LIOU, MS AF LOH, CY LIOU, MS TI LAGRANGIAN SOLUTION OF SUPERSONIC REAL-GAS FLOWS SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID DIFFERENCE-SCHEMES; CONSERVATION-LAWS RP LOH, CY (reprint author), NASA,LEWIS RES CTR,INT FLUID MECH DIV,CLEVELAND,OH 44135, USA. NR 17 TC 6 Z9 6 U1 1 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 1993 VL 104 IS 1 BP 150 EP 161 DI 10.1006/jcph.1993.1017 PG 12 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA KF519 UT WOS:A1993KF51900017 ER PT J AU KARAM, MA FUNG, AK AF KARAM, MA FUNG, AK TI ELECTROMAGNETIC ENERGY ABSORBED WITHIN A MIE SPHERE SO JOURNAL OF ELECTROMAGNETIC WAVES AND APPLICATIONS LA English DT Article AB The formulations of the extinction and scattering losses of an electromagnetic plane wave exciting a Mie sphere are well known in the literature. However the absorption loss does not have an expression of its own. In this study, an expression for the electromagnetic energy absorbed within a Mie sphere is derived directly from Ohms' law in terms of the inner field Mie coefficients. This expression is verified as the difference between the extinction and the scattering losses which are formulated in terms of the scattered field Mie coefficients. This absorbed energy expression can be used to check the accuracy of the calculated extinction and scattering losses of Mie spheres. Also, in reaching to the expression giving the difference between the extinction and scattering losses the relations between the inner and scattered field Mie coefficients are revealed. RP KARAM, MA (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 975,GREENBELT,MD 20771, USA. NR 0 TC 1 Z9 1 U1 0 U2 2 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 1993 VL 7 IS 10 BP 1379 EP 1387 DI 10.1163/156939393X00534 PG 9 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA MA315 UT WOS:A1993MA31500006 ER PT J AU HERBELL, TP ECKEL, AJ AF HERBELL, TP ECKEL, AJ TI CERAMIC MATRIX COMPOSITES FOR ROCKET ENGINE TURBINE APPLICATIONS SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article AB A program to establish the potential for introducing fiber-reinforced ceramic matrix composites (FRCMC) in future rocket engine turbopumps was instituted in 1988. A brief summary of the overall program (both contract and in-house research) is presented. Tests at NASA Lewis include thermal upshocks in a hydrogen/oxygen test rig capable of generating heating rates up to 2500-degrees-C/s. Post-thermal upshock exposure evaluation includes the measurement of residual strength and failure analysis. Test results for monolithic ceramics and several FRCMCs are presented. Hydrogen compatibility was assessed by isothermal exposure of monolithic ceramics in high-temperature gaseous hydrogen plus water vapor. RP HERBELL, TP (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 15 TC 5 Z9 5 U1 0 U2 2 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 1993 VL 115 IS 1 BP 64 EP 69 DI 10.1115/1.2906687 PG 6 WC Engineering, Mechanical SC Engineering GA KK767 UT WOS:A1993KK76700010 ER PT J AU CHULYA, A GYEKENYESI, JP BHATT, RT AF CHULYA, A GYEKENYESI, JP BHATT, RT TI MECHANICAL-BEHAVIOR OF FIBER-REINFORCED SIC RBSN CERAMIC MATRIX COMPOSITES - THEORY AND EXPERIMENT SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article ID HIGH-STRENGTH; FRACTURE; INTERFACE; CRACKING; FAILURE; WORK AB The mechanical behavior of continuous fiber-reinforced SiC/RBSN composites with various fiber contents is evaluated. Both catastrophic and noncatastrophic failures are observed in tensile specimens. Damage and failure mechanisms are identified via in-situ monitoring using NDE techniques throughout the loading history. Effects of fiber/matrix interface debonding (splitting) parallel to the fibers are discussed. Statistical failure behavior of fibers is also observed, especially when the interface is weak. Micromechanical models incorporating residual stresses to calculate the critical matrix cracking strength, ultimate strength, and work of pull-out are reviewed and used to predict composite response. For selected test problems, experimental measurements are compared to analytic predictions. C1 NASA,LEWIS RES CTR,AVIAT SYST COMMAND,PROPULS DIRECTORATE,CLEVELAND,OH 44135. NASA,LEWIS RES CTR,STRUCT INTEGR BRANCH,CLEVELAND,OH 44135. RP CHULYA, A (reprint author), CLEVELAND STATE UNIV,DEPT CIVIL ENGN,CLEVELAND,OH 44115, USA. NR 29 TC 3 Z9 3 U1 0 U2 1 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 1993 VL 115 IS 1 BP 91 EP 102 DI 10.1115/1.2906691 PG 12 WC Engineering, Mechanical SC Engineering GA KK767 UT WOS:A1993KK76700014 ER PT J AU DUFFY, SF PALKO, JL GYEKENYESI, JP AF DUFFY, SF PALKO, JL GYEKENYESI, JP TI STRUCTURAL RELIABILITY-ANALYSIS OF LAMINATED CMC COMPONENTS SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article ID CERAMIC COMPOSITES; FRACTURE; STRENGTH; FAILURE; MODEL AB For laminated ceramic matrix composite (CMC) materials to realize their full potential in aerospace applications design, methods and protocols are a necessity. This paper focuses on the time-independent failure response of these materials and presents a reliability analysis associated with the initiation of matrix cracking. It highlights a public domain computer algorithm that has been coupled with the laminate analysis of a finite element code and which serves as a design aid to analyze structural components made from laminated CMC materials. Issues relevant to the effect of the size of the component are discussed, and a parameter estimation procedure is presented. The estimation procedure allows three parameters to be calculated from a failure population that has an underlying Weibull distribution. C1 NASA,LEWIS RES CTR,STRUCT INTEGR BRANCH,CLEVELAND,OH 44135. RP DUFFY, SF (reprint author), CLEVELAND STATE UNIV,DEPT CIVIL ENGN,CLEVELAND,OH 44115, USA. NR 33 TC 6 Z9 6 U1 0 U2 1 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 1993 VL 115 IS 1 BP 103 EP 108 DI 10.1115/1.2906663 PG 6 WC Engineering, Mechanical SC Engineering GA KK767 UT WOS:A1993KK76700015 ER PT J AU DUFFY, SF POWERS, LM STARLINGER, A AF DUFFY, SF POWERS, LM STARLINGER, A TI RELIABILITY-ANALYSIS OF STRUCTURAL CERAMIC COMPONENTS USING A 3-PARAMETER WEIBULL DISTRIBUTION SO JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER-TRANSACTIONS OF THE ASME LA English DT Article ID FRACTURE AB This paper describes nonlinear regression estimators for the three-parameter Weibull distribution. Issues relating to the bias and invariance associated with these estimators are examined numerically using Monte Carlo simulation methods. The estimators were used to extract parameters from sintered silicon nitride failure data. A reliability analysis was performed on a turbopump blade utilizing the three-parameter Weibull distribution and the estimates from the sintered silicon nitride data. C1 NASA,LEWIS RES CTR,NATL RES COUNCIL,CLEVELAND,OH 44135. RP DUFFY, SF (reprint author), CLEVELAND STATE UNIV,CLEVELAND,OH 44115, USA. NR 16 TC 12 Z9 13 U1 0 U2 4 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 1993 VL 115 IS 1 BP 109 EP 116 DI 10.1115/1.2906664 PG 8 WC Engineering, Mechanical SC Engineering GA KK767 UT WOS:A1993KK76700016 ER PT J AU ROSENZWEIG, C HILLEL, D AF ROSENZWEIG, C HILLEL, D TI THE DUST BOWL OF THE 1930S - ANALOG OF GREENHOUSE-EFFECT IN THE GREAT-PLAINS SO JOURNAL OF ENVIRONMENTAL QUALITY LA English DT Article ID UNITED-STATES; CARBON-DIOXIDE; DROUGHT; CLIMATE AB For nine sites in the southern Great Plains, the decade of the Dust Bowl was consistently warmer than 1951 to 1980 ''normal.'' It also tended to be drier, but less consistently so. At four of the nine sites, the combination of consistently higher temperature and mostly lower precipitation had a cumulative effect over the 1930s, making the entire decade a period of agricultural drought as characterized by the Palmer Drought Severity Index (PDSI). Episodes of extreme drought occurred at many sites, particularly in 1934 in Nebraska. Temperature and precipitation changes predicted by two general circulation models (GCMs) at the upper range of current climate model predictions for doubled concentrations of CO2 + 4.2-degrees-C and + 4.0-degrees-C mean global surface air temperature warming) suggest drought conditions as defined by the PDSI that are worse than those for the 1930s for all stations. Droughtiness is projected to increase overall, even when the GCM climate change scenarios produce little change or even increases in precipitation. In most instances, the mean GCM-predicted drought conditions equal or exceed the extreme drought years of the decade. When dynamic crop growth models were run in combination with the GCM-predicted climates, simulated wheat (Triticum aestivum L.) and corn (Zea mays L.) yields were obtained that were generally lower (approximately 30%) than those of simulations for the actual climate of the 1930s. The crop model simulations indicated that the predicted climate change is likely to be less detrimental to a crop such as wheat, whose main growing period is in the spring, than to a typical summer crop such as corn. The overall results of this study suggest that the Dust Bowl experience of the 1930s may be characterized as a preliminary analog of possible future climate conditions for the southern Great Plains, with the importance difference that the higher projections of GCM warming produce more severe climatic consequences than the Dust Bowl. C1 NASA,GODDARD INST SPACE STUDIES,NEW YORK,NY 10025. UNIV MASSACHUSETTS,DEPT PLANT SOIL & ENVIRON SCI,AMHERST,MA 01003. RP ROSENZWEIG, C (reprint author), COLUMBIA UNIV,NEW YORK,NY 10027, USA. NR 29 TC 39 Z9 39 U1 2 U2 24 PU AMER SOC AGRONOMY PI MADISON PA 677 S SEGOE RD, MADISON, WI 53711 SN 0047-2425 J9 J ENVIRON QUAL JI J. Environ. Qual. PD JAN-MAR PY 1993 VL 22 IS 1 BP 9 EP 22 PG 14 WC Environmental Sciences SC Environmental Sciences & Ecology GA KM199 UT WOS:A1993KM19900002 ER PT J AU SOGARD, SM OLLA, BL AF SOGARD, SM OLLA, BL TI EFFECTS OF LIGHT, THERMOCLINES AND PREDATOR PRESENCE ON VERTICAL-DISTRIBUTION AND BEHAVIORAL INTERACTIONS OF JUVENILE WALLEYE POLLOCK, THERAGRA-CHALCOGRAMMA PALLAS SO JOURNAL OF EXPERIMENTAL MARINE BIOLOGY AND ECOLOGY LA English DT Article DE ACTIVITY; FISH BEHAVIOR; ONTOGENIC CHANGES; SCHOOLING; STRATIFICATION ID EASTERN BERING SEA; ONCORHYNCHUS-NERKA; BRITISH-COLUMBIA; SOCKEYE SALMON; YELLOW PERCH; FOOD; TEMPERATURE; RESPONSES; RATION; FISHES AB The vertical distribution of pelagic juvenile stages of fish can be altered by a variety of environmental stimuli. In laboratory experiments, we tested the influence of light intensity, thermal stratification, and predator presence on vertical distribution in juvenile walleye pollock (Theragra chalcogramma Pallas). In addition, we measured activity levels and group cohesion (schooling tendency). Experiments were conducted over a broad size range (37-126 mm), allowing us to test for ontogenetic variability in behavioral responses. Juvenile pollock displayed distinct responses to predator presence and thermal stratification, shifting downward and upward, respectively, relative to their average vertical position under baseline experimental conditions. When pollock were exposed to the two conflicting stimuli of a stratified water column plus a predator, their average depth was midway between the mean positions observed with each stimulus alone. The fishes response to bright light was less clear. Increased light levels did not significantly alter the average vertical position of pollock in the water column, but did result in increased use of the cold water layer under stratified conditions. There was an ontogenetic shift in pollock behavior. Smaller fish were less active, had a smaller range of movement through the experimental tank, and were less likely to dive through the thermocline in a stratified water column. Smaller fish also demonstrated less group cohesion, having a lower tendency to aggregate or school compared with larger fish. These behavior patterns are potentially useful in explaining distribution patterns of juvenile Walleye pollock in the field. RP SOGARD, SM (reprint author), NATL MARINE FISHERIES SERV,ALASKA FISHERIES SCI CTR,COOPERAT INST MARINE RESOURCE STUDIES,NEWPORT,OR 97365, USA. NR 40 TC 46 Z9 46 U1 0 U2 5 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0981 J9 J EXP MAR BIOL ECOL JI J. Exp. Mar. Biol. Ecol. PY 1993 VL 167 IS 2 BP 179 EP 195 DI 10.1016/0022-0981(93)90030-R PG 17 WC Ecology; Marine & Freshwater Biology SC Environmental Sciences & Ecology; Marine & Freshwater Biology GA LA476 UT WOS:A1993LA47600003 ER PT J AU GOLDSTEIN, ME LEIB, SJ AF GOLDSTEIN, ME LEIB, SJ TI 3-DIMENSIONAL BOUNDARY-LAYER INSTABILITY AND SEPARATION INDUCED BY SMALL-AMPLITUDE STREAMWISE VORTICITY IN THE UPSTREAM FLOW SO JOURNAL OF FLUID MECHANICS LA English DT Article ID TOLLMIEN-SCHLICHTING WAVES; GORTLER VORTICES; LEADING-EDGE; COLLISION AB We consider the effects of a small-amplitude, steady, streamwise vorticity field on the flow over an infinitely thin flat plate in an otherwise uniform stream. We show how the initially linear perturbation, ultimately leads to a small-amplitude but nonlinear cross-flow far downstream from the leading edge. This motion is imposed on the boundary-layer flow and eventually causes the boundary layer to separate. The streamwise velocity profiles within the boundary layer become inflexional in localized spanwise regions just upstream of the separation point. The flow in these regions is therefore susceptible to rapidly growing inviscid instabilities. C1 SVERDRUP TECHNOL INC,LEWIS RES CTR GRP,CLEVELAND,OH 44135. RP GOLDSTEIN, ME (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 30 TC 24 Z9 24 U1 0 U2 1 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD JAN PY 1993 VL 246 BP 21 EP 41 DI 10.1017/S0022112093000023 PG 21 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA KJ536 UT WOS:A1993KJ53600002 ER PT J AU BOYD, ID AF BOYD, ID TI TEMPERATURE-DEPENDENCE OF ROTATIONAL RELAXATION IN SHOCK-WAVES OF NITROGEN SO JOURNAL OF FLUID MECHANICS LA English DT Article ID NONEQUILIBRIUM; MODEL; GASES AB Computations are presented for one-dimensional shockwaves of diatomic nitrogen. The direct simulation Monte Carlo method (DSMC) is employed. A model which allows the use of the Sutherland viscosity model in the DSMC technique is further developed to include the modelling of rotational relaxation. This is achieved by employing a temperature-dependent expression for the rotational collision number to simulate the rate of relaxation. in contrast to earlier DSMC studies which employed a constant value for the collision number. The behaviour of the new model is first considered for rotational relaxation in a heat bath. Comparison is made with the more traditional DSMC collision model termed the variable hard sphere (VHS) model in which the viscosity has a fixed temperature exponent. These two models are then applied to a number of shock-wave cases for which experimental data exist. These have Mach numbers ranging from 1.5 to 26, vet the enthalpies involved are sufficiently low to allow omission of vibrational relaxation. It is found that both the VHS and Sutherland viscosity models give excellent agreement with the experimental data for shock-wave thickness, and for profiles of density, rotational temperature, and velocity. The most significant finding of the study is that the reciprocal shock thickness varies with the upstream temperature condition. This variation is observed in the experimental data, and is simulated numerically by employing the temperature-dependent expression for the rotational collision number. C1 NASA,AMES RES CTR,ELORET INST,MOFFETT FIELD,CA 94035. NR 18 TC 15 Z9 15 U1 2 U2 4 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD JAN PY 1993 VL 246 BP 343 EP 360 DI 10.1017/S0022112093000163 PG 18 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA KJ536 UT WOS:A1993KJ53600016 ER PT J AU BANDYOPADHYAY, PR AHMED, A AF BANDYOPADHYAY, PR AHMED, A TI TURBULENT BOUNDARY-LAYERS SUBJECTED TO MULTIPLE CURVATURES AND PRESSURE-GRADIENTS SO JOURNAL OF FLUID MECHANICS LA English DT Article ID LOW-REYNOLDS-NUMBER; SURFACE CURVATURE; FLOW; WALL; SIMULATION AB The effects of abruptly applied cycles of curvatures and pressure gradients on turbulent boundary layers are examined experimentally. Two two-dimensional curved test surfaces are considered: one has a sequence of concave and convex longitudinal surface curvatures and the other has a sequence of convex and concave curvatures. The choice of the curvature sequences were motivated by a desire to study the asymmetric response of turbulent boundary layers to convex and concave curvatures. The relaxation of a boundary layer from the effects of these two opposite sequences has been compared. The effect of the accompanying sequences of pressure gradient has also been examined but the effect of curvature dominates. The growth of internal layers at the curvature junctions have been studied. Measurements of the Gortler and corner vortex systems have been made. The boundary layer recovering from the sequence of concave to convex curvature has a sustained lower skin friction level than in that recovering from the sequence of convex to concave curvature. The amplification and suppression of turbulence due to the curvature sequences have also been studied. RP BANDYOPADHYAY, PR (reprint author), NASA,LANGLEY RES CTR,MAIL STOP 170,HAMPTON,VA 23665, USA. NR 43 TC 25 Z9 25 U1 1 U2 5 PU CAMBRIDGE UNIV PRESS PI NEW YORK PA 40 WEST 20TH STREET, NEW YORK, NY 10011-4211 SN 0022-1120 J9 J FLUID MECH JI J. Fluid Mech. PD JAN PY 1993 VL 246 BP 503 EP 527 DI 10.1017/S0022112093000242 PG 25 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA KJ536 UT WOS:A1993KJ53600024 ER PT J AU MAHAJAN, AJ KAZA, KRV DOWELL, EH AF MAHAJAN, AJ KAZA, KRV DOWELL, EH TI SEMIEMPIRICAL MODEL FOR PREDICTION OF UNSTEADY FORCES ON AN AIRFOIL WITH APPLICATION TO FLUTTER SO JOURNAL OF FLUIDS AND STRUCTURES LA English DT Article ID SEPARATED FLOW C1 DUKE UNIV,DURHAM,NC 27706. UNIV TOLEDO,TOLEDO,OH 43606. RP MAHAJAN, AJ (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 19 TC 10 Z9 10 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 1993 VL 7 IS 1 BP 87 EP 103 DI 10.1006/jfls.1993.1007 PG 17 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA KM880 UT WOS:A1993KM88000007 ER PT J AU OBERBECK, VR MARSHALL, JR AGGARWAL, H AF OBERBECK, VR MARSHALL, JR AGGARWAL, H TI IMPACTS, TILLITES, AND THE BREAKUP OF GONDWANALAND SO JOURNAL OF GEOLOGY LA English DT Article ID CRETACEOUS-TERTIARY BOUNDARY; FLOOD BASALTS; DEPOSITS; ORIGIN; LIFE; GRAVITY; TRACKS; EJECTA AB Mathematical analysis demonstrates that substantial impact crater deposits should have been produced during the last 2 Gy of Earth's history. Textures of impact deposits are shown to resemble textures of tillites and diamictites of Precambrian and younger ages. The calculated thickness distribution for impact crater deposits produced during 2 Gy is similar to that of tillites and diamictites less-than-or-equal-to 2 Ga. We suggest, therefore, that some tillites/diamictites could be of impact origin. Extensive tillite/diamictite deposits predated continental flood basalts on the interior of Gondwanaland. Significantly, other investigators have already associated impact cratering with flood basalt volcanism and continental rifting. Thus, it is proposed that the breakup of Gondwanaland could have been initiated by crustal fracturing from impacts. RP OBERBECK, VR (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 69 TC 43 Z9 45 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1376 J9 J GEOL JI J. Geol. PD JAN PY 1993 VL 101 IS 1 BP 1 EP 19 PG 19 WC Geology SC Geology GA KG669 UT WOS:A1993KG66900001 ER PT J AU BURLAGA, LF MCDONALD, FB NESS, NF AF BURLAGA, LF MCDONALD, FB NESS, NF TI COSMIC-RAY MODULATION AND THE DISTANT HELIOSPHERIC MAGNETIC-FIELD - VOYAGER-1 AND VOYAGER-2 OBSERVATIONS FROM 1986 TO 1989 SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID OUTER HELIOSPHERE; SOLAR MODULATION; CURRENT SHEET; PARTICLE DRIFT; TRANSPORT; FLUCTUATIONS AB The changes in the cosmic ray intensity >70 MeV/nucleon observed by Voyager 1 (hereinafter called V1) near 30-degrees heliographic latitude and by Voyager 2 (hereinafter called V2) near 0-degrees heliographic latitude from 1986 to 1990 were closely related to the large-scale fluctuations in the magnetic field strength at V1 and V2, respectively. The decreases in the cosmic ray intensity observed by V1 and V2 from 1986 to 1990 were generally related to merged interaction regions (MIRs). An exception to this relation was observed from about day 45 to day 110, 1987 at V1. The MIRs are of three general types: ''global MIRs'' (GMIRs), which extend around the Sun and to high latitudes, whose effects persist over several solar rotations; ''corotating MIRs'' (CMIRs), which are quasi-periodic structures generated by the interaction of corotating streams lasting several solar rotations; and ''local MIRs'' (LMIRs), which are nonperiodic and have limited latitudinal and/or longitudinal extent, whose effects last less than one solar rotation. The cosmic ray intensity shows a net increase with time when the MIRs are weak and the magnetic field strength is relatively low, for example, from approximately day 120 to approximately day 45, 1987 at V1 and from approximately 120, 1986 to approximately 195, 1987 at V2. The cosmic ray intensity fluctuates about a constant level when CMIRs and rarefaction regions are dominant. This is the case from approximately 230, 1987, to approximately 275, 1988, at V1 and during some intervals from approximately 245, 1987, to approximately 60, 1989, at V2. The cosmic ray intensity decreases locally during the passage of a LMIR. Such a local decrease was observed at both V1 and V2 near day 100, 1986. Local decreases in the cosmic ray intensity were observed at V2 but not V1 beginning near days 240 and 320, 1987, and near day 275, 1988. A global, broad, steplike change in the cosmic ray intensity was observed at all of the spacecraft during the passage of a GMIR, beginning approximately near day 125, 1989, at V1 and near day 65, 1989, at V2 and extending for approximately 100 to 150 days, respectively. C1 UNIV MARYLAND,INST PHYS SCI & TECHNOL,COLL PK,MD 20872. UNIV DELAWARE,BARTOL RES INST,NEWARK,DE 19716. RP BURLAGA, LF (reprint author), NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,CODE 692,GREENBELT,MD 20771, USA. NR 53 TC 178 Z9 179 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 1993 VL 98 IS A1 BP 1 EP 11 DI 10.1029/92JA01979 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KH440 UT WOS:A1993KH44000001 ER PT J AU RICHARDSON, IG BARBIER, LM REAMES, DV VONROSENVINGE, TT AF RICHARDSON, IG BARBIER, LM REAMES, DV VONROSENVINGE, TT TI COROTATING MEV/AMU ION ENHANCEMENTS AT LESS-THAN-OR-EQUAL-TO-1 AU FROM 1978 TO 1986 SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID SOLAR ENERGETIC PARTICLES; MAGNETIC STORMS 1978-1979; INTERACTION REGIONS; INTERPLANETARY ACCELERATION; 1 AU; EVENTS; ABUNDANCES; NUCLEON; WIND; GREATER AB MeV/amu ion enhancements associated with corotating high-speed solar wind streams in 1978-1986 during pre-solar maximum to near solar minimum conditions are studied using ISEE 3/ICE, IMP 8, and Helios 1 data. Around 50% of corotating streams contain energetic ion increases. These increases extend to approximately 25 MeV/amu, where they merge into the galactic cosmic ray background, and are most evident approaching solar minimum. Sunward ion streaming in the solar wind frame (first-order anisotropy approximately 20%) and positive radial intensity gradients (approximately 400%/AU) are consistent with acceleration in the outer heliosphere at corotating shocks followed by streaming into the inner heliosphere. The spectra and intensities show little solar cycle variation. The spectra of ions from protons to Fe at approximately 2-20 MeV/amu are approximated equally well by exponentials in momentum dJ/dp almost-equal-to exp (-P/P0), P0 = 11-16 MeV c-1 amu-1, or by distribution functions f almost-equal-to exp (-nu/nu0), nu0 = 0.18-0.25 (MeV/amu) 1/2, with equivalent power law in energy slopes in the range approximately -3 to -4. Ion abundances are correlated with the stream peak solar wind speed. In slower corotating streams (maximum solar wind speed <600 km/s), mean abundance ratios are protons/He-4 = 43 +/- 18; He-4/O = 54 +/- 23; C/O = 0.62 +/- 0.06; Mg/O = 0.19 +/- 0.03, and Fe/O = 0.14 +/- 0.02. These show some similarity to the corresponding ratios for ''solar energetic particles'' (SEP) (protonS/He-4 = 70 +/- 10; He-4/0 = 55 +/- 3; C/O = 0.48 +/- 0.02; Mg/O = 0.21 +/- 0.01 and Fe/O = 0.16 +/- 0.02) which are typically accelerated by shocks passing through slow solar wind. In corotating events in higher-speed streams, these ratios become protonS/4 He = 19 +/- 5; He-4/O = 130 +/- 35; C/O = 0.89 +/- 0.05; Mg/O = 0.14 +/- 0.01, and Fe/O = 0.10 +/- 0.01 and more closely resemble the corotating event abundance ratios measured in high-speed streams during the mid-1970s solar minimum (protonS/He-4 = 17 +/- 7; He-4/O approximately 160 +/- 50; C/O = 0.89 +/- 0.1; Mg/O = 0.13 +/- 0.03, and Fe/O = 0.096 +/- 0.05). Solar wind plasma may also show similar variations in composition with solar wind speed (based on the limited solar wind composition measurements available) so that the energetic ion compositions are consistent with the acceleration of corotating event ions and SEPs from the solar wind. The ordering of corotating event and solar wind abundances by first ionization potential and their variation with solar wind speed suggest that conditions in the ion-neutral fractionation region in the upper chromosphere determine the abundances and are associated in some way with regulation of the solar wind speed. C1 UNIV MARYLAND,DEPT ASTRON,COLL PK,MD 20742. RP RICHARDSON, IG (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771, USA. OI Richardson, Ian/0000-0002-3855-3634 NR 77 TC 74 Z9 74 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 1993 VL 98 IS A1 BP 13 EP 32 DI 10.1029/92JA01837 PG 20 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KH440 UT WOS:A1993KH44000002 ER PT J AU SONG, P RUSSELL, CT STRANGEWAY, RJ WYGANT, JR CATTELL, CA FITZENREITER, RJ ANDERSON, RR AF SONG, P RUSSELL, CT STRANGEWAY, RJ WYGANT, JR CATTELL, CA FITZENREITER, RJ ANDERSON, RR TI WAVE PROPERTIES NEAR THE SUBSOLAR MAGNETOPAUSE - PC 3-4 ENERGY COUPLING FOR NORTHWARD INTERPLANETARY MAGNETIC-FIELD SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID SOLAR-WIND; DAYSIDE MAGNETOSPHERE; HYDROMAGNETIC WAVES; ULF FLUCTUATIONS; MAGNETOSHEATH; PLASMA; PRESSURE; ISEE-1; PULSATIONS; DEPLETION AB Strong slow mode waves in the Pc 34 frequency range are found in the magnetosheath close to the magnetopause. We have studied then waves at one of the ISEE subsolar magnetopause crossings using the magnetic field, electric field and plasma measurements. We use the pressure balance at the magnetopause to calibrate the Fast Plasma Experiment data versus the magnetometer data. When we perform such a calibration and renormalization, we find that the slow mode structures are not in pressure balance and small scale fluctuations in the total pressure still remain in the Pc 3-4 range. Energy in the total pressure fluctuations can be transmitted through the magnetopause by boundary motions. The Poynting flux calculated from the electric and magnetic field measurements suggests that a net Poynting flux is transmitted into the magnetopause. The two independent measurements show a similar energy transmission coefficient. The transmitted energy flux is about 18% of the magnetic energy flux of the waves in the magnetosheath. Part of this transmitted energy is lost in the sheath transition layer before it enters the closed field line region. The waves reaching the boundary layer decay rapidly. Little wave power is transmitted into the magnetosphere. C1 NATL CTR ATMOSPHER RES,HIGH ALTITUDE OBSERV,BOULDER,CO 80307. NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. UNIV CALIF BERKELEY,SPACE SCI LAB,BERKELEY,CA 94720. UNIV IOWA,DEPT PHYS & ASTRON,IOWA CITY,IA 52242. RP SONG, P (reprint author), UNIV CALIF LOS ANGELES,INST GEOPHYS & PLANETARY PHYS,LOS ANGELES,CA 90024, USA. OI Russell, Christopher/0000-0003-1639-8298 NR 38 TC 28 Z9 29 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 1993 VL 98 IS A1 BP 187 EP 196 DI 10.1029/92JA01534 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KH440 UT WOS:A1993KH44000017 ER PT J AU JEZEK, KC DRINKWATER, MR CRAWFORD, JP BINDSCHADLER, R KWOK, R AF JEZEK, KC DRINKWATER, MR CRAWFORD, JP BINDSCHADLER, R KWOK, R TI ANALYSIS OF SYNTHETIC APERTURE RADAR DATA COLLECTED OVER THE SOUTHWESTERN GREENLAND ICE-SHEET SO JOURNAL OF GLACIOLOGY LA English DT Article AB Analyses of the first aircraft multi-frequency, polarimetric synthetic aperture radar (SAR) data acquired over the southwestern Greenland ice sheet are presented. Data were collected on 31 August 1989 by the Jet Propulsion Laboratory SAR using the NASA DC-8 aircraft. Along with curvilinear patterns associated with large-scale morphologic features such as crevasses, lakes and streams, frequency and polarization dependencies are observed in the P-, L- and C-band image products. Model calculations that include firn grain-size and volumetric water content suggest that tonal variations in and between the images are attributable to large-scale variations in the snow- and ice-surface characteristics, especially snow wetness. In particular, systematic trends in back-scatter strength observed at C-band across regions of changing snow wetness are suggestive of a capability to delineate boundaries between snow facies. Ice lenses and ice pipes are the speculated cause for similar trends in P-band back-scatter. Finally, comparison between SEASAT SAR data collected in 1978 and these airborne data collected in 1989 indicate a remarkable stability of surface patterns associated with the locations of supraglacial lake and stream systems. C1 OHIO STATE UNIV,DEPT GEOL SCI,COLUMBUS,OH 43210. JET PROP LAB,PASADENA,CA 91109. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RP JEZEK, KC (reprint author), OHIO STATE UNIV,BYRD POLAR RES CTR,COLUMBUS,OH 43210, USA. RI Kwok, Ron/A-9762-2008; OI Kwok, Ron/0000-0003-4051-5896; Drinkwater, Mark/0000-0002-9250-3806 NR 15 TC 37 Z9 38 U1 0 U2 3 PU INT GLACIOL SOC PI CAMBRIDGE PA LENSFIELD RD, CAMBRIDGE, ENGLAND CB2 1ER SN 0022-1430 J9 J GLACIOL JI J. Glaciol. PY 1993 VL 39 IS 131 BP 119 EP 132 PG 14 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA LD620 UT WOS:A1993LD62000013 ER PT J AU BINDSCHADLER, R VORNBERGER, PL SHABTAIE, S AF BINDSCHADLER, R VORNBERGER, PL SHABTAIE, S TI THE DETAILED NET MASS-BALANCE OF THE ICE PLAIN ON ICE STREAM-B, ANTARCTICA - A GEOGRAPHIC INFORMATION-SYSTEM APPROACH SO JOURNAL OF GLACIOLOGY LA English DT Article ID SHELF; SHEET AB Field data of ice thickness, velocity and accumulation of the ice plain region of Ice Stream B, Antarctica, are organized into a geographic information system (GIS) and used to calculate the spatial pattern of net mass balance. Overall, the ice plain is thickening at a rate of 0.13 +/- 0.05 m a-1. Large uncertainties of the high-resolution calculations are reduced by spatial averaging, revealing a number of areas significantly out of balance. Ice in the broad diverging flow field is mostly thinning but a thinner region of the ice plain which includes ice raft ''a'' is thickening. Thickening is also indicated farther downstream on the ice plain, matching the thickening already calculated to be occurring upstream of Crary Ice Rise. The patterns of net mass balance for the two major tributaries of Ice Stream B are asymmetric, demonstrating a real difference in the current dynamics of these two tributaries. C1 HUGHES STX CORP,LANHAM,MD 20706. UNIV WISCONSIN,GEOPHYS & POLAR RES CTR,MADISON,WI 53706. RP BINDSCHADLER, R (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 971,GREENBELT,MD 20771, USA. NR 20 TC 14 Z9 16 U1 1 U2 1 PU INT GLACIOL SOC PI CAMBRIDGE PA LENSFIELD RD, CAMBRIDGE, ENGLAND CB2 1ER SN 0022-1430 J9 J GLACIOL JI J. Glaciol. PY 1993 VL 39 IS 133 BP 471 EP 482 PG 12 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NA692 UT WOS:A1993NA69200005 ER PT J AU BINDSCHADLER, R AF BINDSCHADLER, R TI SIPLE COAST PROJECT RESEARCH OF CRARY ICE RISE AND THE MOUTHS OF ICE STREAM-B AND ICE STREAM-C, WEST ANTARCTICA - REVIEW AND NEW PERSPECTIVES SO JOURNAL OF GLACIOLOGY LA English DT Article ID BOTTOM CREVASSES; MASS BALANCE; VELOCITY; SHELVES; SHEET; FIELD AB Satellite imagery is used as a basis to review and critique the results of studies at the mouths of Ice Streams B and C and Crary Ice Rise. In many cases, these past analyses are extended by taking advantage of the broad coverage within each image. New perspectives are provided by the image data and some longstanding controversies are resolved. The grounding line is easily delineated and mapped in areas covered by imagery. Extensive areas of grounded ice with complex patterns of flow stripes are identified on the flanks of Crary Ice Rise. The imagery also allows a corrected map of surface topography in the vicinity of the Downstream B camp. New questions are posed by hitherto unseen features. Data from the IGY traverse of the Ross Ice Shelf in 1957 are included to demonstrate that large changes have occurred in the past almost 30 years in the area upstream of Crary Ice Rise. These changes include modifications in the surface topography, elimination of crevasses and increases in the ice thickness by approximately 60 m. RP BINDSCHADLER, R (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 971,GREENBELT,MD 20771, USA. NR 46 TC 28 Z9 28 U1 0 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 1993 VL 39 IS 133 BP 538 EP 552 PG 15 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NA692 UT WOS:A1993NA69200012 ER PT J AU DAVIS, CH ZWALLY, HJ AF DAVIS, CH ZWALLY, HJ TI GEOGRAPHIC AND SEASONAL-VARIATIONS IN THE SURFACE-PROPERTIES OF THE ICE SHEETS BY SATELLITE-RADAR ALTIMETRY SO JOURNAL OF GLACIOLOGY LA English DT Article ID CONTINENTAL ICE; GREENLAND; RETURN; GROWTH AB Geosat-altimeter wave forms from the Greenland and Antarctic ice sheets are analyzed using an algorithm based upon a combined surface- and volume-scattering model. The results demonstrate that sub-surface volume-scattering occurs over major parts of the ice sheets. Quantitative estimates of geographic variations in the near-surface ice-sheet properties are derived by retracking individual altimeter wave forms. The derived surface properties correlate with elevation, latitude and microwave brightness-temperature data. Specifically, the extinction coefficient of snow obtained by this method varies from 0.48 to 0. 13 m-1 over the latitudes from 65-degrees to 72-degrees-N on the central part of the Greenland ice sheet and from 0.20 to 0.10 m-1 over a section of Wilkes Land in East Antarctica where the elevation increases from 2550 to 3150m. Analysis of a passive-microwave data over East Antarctica shows that the brightness temperature increases with elevation as the extinction coefficient decreases. Larger snow grain-sizes occur at lower elevations of the ice sheet because of higher mean annual temperatures. The larger grain-sizes increase the extinction coefficient of snow and decrease the emitted energy (brightness temperature) from greater snow depths. The passive-microwave data are also used to determine the average number of melt d year-1 (1979-87) for the central part of the Greenland ice sheet. For latitudes from 65-degrees to 68.5-degrees-N, the average number of melt days decreases from 3.5 to 0.25 d year-1, whereas no melt events are observed for latitudes above 69-degrees-N over the 8 year period. Snow subjected to alternate melting and freezing has enhanced grain-sizes compared to that of dry snow. This accounts for the larger values and larger spatial variations of k(e) on the Greenland ice sheet compared to East Antarctica, where surface temperatures are never high enough to cause surface melting. C1 NASA,GODDARD SPACE FLIGHT CTR,OCEANS & ICE BRANCH,GREENBELT,MD 20771. RP DAVIS, CH (reprint author), UNIV MISSOURI,TRUMAN CAMPUS,INDEPENDENCE,MO 64050, USA. NR 31 TC 22 Z9 23 U1 0 U2 9 PU INT GLACIOL SOC PI CAMBRIDGE PA LENSFIELD RD, CAMBRIDGE, ENGLAND CB2 1ER SN 0022-1430 J9 J GLACIOL JI J. Glaciol. PY 1993 VL 39 IS 133 BP 687 EP 697 PG 11 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NA692 UT WOS:A1993NA69200027 ER PT J AU IH, CHC BAYARD, DS AHMED, A WANG, SJ AF IH, CHC BAYARD, DS AHMED, A WANG, SJ TI EXPERIMENTS IN MULTIVARIABLE ADAPTIVE-CONTROL OF A LARGE FLEXIBLE STRUCTURE SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB A six-input/six-output multivariable adaptive controller is used to control a large three-dimensional flexible structure experiment. For this purpose, the Jet Propulsion Laboratory Large Spacecraft Control Laboratory antenna-like experiment structure is used, with instrumentation distributed on both the hub and the ribs. This represents a significant increase in complexity relative to earlier adaptive control experiments performed on the same structure using a two-input/two-output setup with instrumentation on the hub alone [Ih, C.-H. C., Bayard, D. S., Wang, S. J., and Eldred, D. B., ''Adaptive Control Experiment with a Large Flexible Structure,'' Proceedings of the AIAA Guidance, Navigation, and Control Conference (Minneapolis, MN), AIAA, Washington, DC, Aug. 1988 (AIAA Paper 88-4153)]. The increase in instrumentation significantly increases spatial controllability and excitation and control of a much larger set of modes. This paper documents multivariable adaptive control experiments on this structural configuration and discusses many of the associated design and implementation issues required for successful operation. RP IH, CHC (reprint author), JET PROP LAB,GUIDANCE & CONTROL SECT,PASADENA,CA 91109, USA. NR 11 TC 5 Z9 5 U1 2 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1993 VL 16 IS 1 BP 9 EP 13 DI 10.2514/3.11420 PG 5 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA KJ330 UT WOS:A1993KJ33000002 ER PT J AU IH, CHC BAYARD, DS AHMED, A WANG, SJ AF IH, CHC BAYARD, DS AHMED, A WANG, SJ TI EXPERIMENTAL-STUDY OF ROBUSTNESS IN ADAPTIVE-CONTROL FOR LARGE FLEXIBLE STRUCTURES SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID SYSTEMS AB An experimental study is performed to investigate the robustness of model reference adaptive control for the large flexible structures control application. The main nonidealities of concern are unmodeled dynamics, input saturation, and time-delay effects (here, actuator and sensor dynamics are lumped into the last item for convenience). This study focuses on the robustness with respect to input saturation and time-delay effects, since robustness to unmodeled dynamics is inherent to the basic algorithm and has been demonstrated experimentally elsewhere. RP IH, CHC (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 13 TC 5 Z9 5 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1993 VL 16 IS 1 BP 14 EP 20 DI 10.2514/3.11421 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA KJ330 UT WOS:A1993KJ33000003 ER PT J AU SPANOS, JT MINGORI, DL AF SPANOS, JT MINGORI, DL TI NEWTON ALGORITHM FOR FITTING TRANSFER-FUNCTIONS TO FREQUENCY-RESPONSE MEASUREMENTS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID LEAST-SQUARES PROBLEMS AB In this paper the problem of synthesizing transfer functions from frequency response measurements is considered. Given a complex vector representing the measured frequency response of a physical system, a transfer function of specified order is determined that minimizes the sum of the magnitude-squared of the frequency response errors. This nonlinear least squares minimization problem is solved by an iterative global descent algorithm of the Newton type that converges quadratically near the minimum. The unknown transfer function is expressed as a sum of second-order rational polynomials, a parameterization that facilitates a numerically robust computer implementation. The algorithm is developed for single-input, single-output, causal, stable transfer functions. Two numerical examples demonstrate the effectiveness of the algorithm. C1 UNIV CALIF LOS ANGELES,DEPT MECH AEROSP & NUCL ENGN,LOS ANGELES,CA 90024. RP SPANOS, JT (reprint author), JET PROP LAB,GUIDANCE & CONTROL SECT,PASADENA,CA 91109, USA. NR 13 TC 3 Z9 4 U1 1 U2 2 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1993 VL 16 IS 1 BP 34 EP 39 DI 10.2514/3.11424 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA KJ330 UT WOS:A1993KJ33000006 ER PT J AU HESS, RA MALSBURY, T ATENCIO, A AF HESS, RA MALSBURY, T ATENCIO, A TI FLIGHT SIMULATOR FIDELITY ASSESSMENT IN A ROTORCRAFT LATERAL TRANSLATION MANEUVER SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID MODEL AB A model-based methodology for assessing flight simulator fidelity in closed-loop fashion is exercised in analyzing a rotorcraft low-altitude maneuver for which flight test and simulation results were available. The addition of a handling qualities sensitivity function to a previously developed model-based assessment criteria allows an analytical comparison of both performance and handling qualities between simulation and flight test. Model predictions regarding the existence of simulator fidelity problems are corroborated by experiment. The modeling approach is used to assess analytically the effects of modifying simulator characteristics on simulator fidelity. C1 USA,AEROFLIGHTDYNAM DIRECTORATE,NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RP HESS, RA (reprint author), UNIV CALIF DAVIS,DEPT MECH AERONAUT & MAT ENGN,DAVIS,CA 95616, USA. NR 14 TC 10 Z9 10 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1993 VL 16 IS 1 BP 79 EP 85 DI 10.2514/3.11430 PG 7 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA KJ330 UT WOS:A1993KJ33000012 ER PT J AU GRUNWALD, AJ ELLIS, SR AF GRUNWALD, AJ ELLIS, SR TI VISUAL-DISPLAY AID FOR ORBITAL MANEUVERING - DESIGN CONSIDERATIONS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB This paper describes the development of an interactive proximity operations planning system that allows on-site planning of fuel-efficient multiburn maneuvers in a potential multispacecraft environment. Although this display system most directly assists planning by providing visual feedback to aid visualization of the trajectories and constraints, its most significant features include 1) the use of an ''inverse dynamics'' algorithm that removes control nonlinearities facing the operator, and 2) a trajectory planning technique that separates, through a ''geometric spreadsheet,'' the normally coupled complex problems of planning orbital maneuvers and allows solution by an iterative sequence of simple independent actions. The visual feedback of trajectory shapes and operational constraints, provided by user-transparent and continuously active background computations, allows the operator to make fast, iterative design changes that rapidly converge to fuel-efficient solutions. The planning tool provides an example of operator-assisted optimization of nonlinear cost functions. C1 NASA,AMES RES CTR,DIV AEROSP HUMAN FACTORS RES,MOFFETT FIELD,CA 94035. UNIV CALIF BERKELEY,SCH OPTOMETRY,BERKELEY,CA 94720. RP GRUNWALD, AJ (reprint author), TECHNION ISRAEL INST TECHNOL,FAC AEROSP ENGN,HAIFA,ISRAEL. NR 19 TC 2 Z9 2 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1993 VL 16 IS 1 BP 139 EP 144 DI 10.2514/3.11438 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA KJ330 UT WOS:A1993KJ33000020 ER PT J AU GRUNWALD, AJ ELLIS, SR AF GRUNWALD, AJ ELLIS, SR TI VISUAL-DISPLAY AID FOR ORBITAL MANEUVERING - EXPERIMENTAL EVALUATION SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article AB An interactive proximity operations planning system, which allows on-site planning of fuel-efficient, multiburn maneuvers in a potential multispacecraft environment, has been experimentally evaluated. An experiment has been carried out in which nonastronaut operators with brief initial training were required to plan a trajectory to retrieve an object accidentally separated from a dual-keel Space Station, for a variety of different orbital situations. The experiments have shown that these operators were able to plan workable trajectories, satisfying a number of operational constraints. Fuel use and planning time were strongly correlated, both with the angle at which the object was separated and with the existence of spatial constraints. Planning behavior was found to be strongly operator-dependent. This finding calls for the need for standardizing planning strategies through operator training or the use of semiautomated planning schemes. C1 NASA,AMES RES CTR,DIV AEROSP HUMAN FACTORS RES,MOFFETT FIELD,CA 94035. UNIV CALIF BERKELEY,SCH OPTOMETRY,BERKELEY,CA 94720. RP GRUNWALD, AJ (reprint author), TECHNION ISRAEL INST TECHNOL,FAC AEROSP ENGN,HAIFA,ISRAEL. NR 5 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 0731-5090 J9 J GUID CONTROL DYNAM JI J. Guid. Control Dyn. PD JAN-FEB PY 1993 VL 16 IS 1 BP 145 EP 150 DI 10.2514/3.11439 PG 6 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA KJ330 UT WOS:A1993KJ33000021 ER PT J AU PAIELLI, RA BACH, RE AF PAIELLI, RA BACH, RE TI ATTITUDE-CONTROL WITH REALIZATION OF LINEAR ERROR DYNAMICS SO JOURNAL OF GUIDANCE CONTROL AND DYNAMICS LA English DT Article ID EXACT NONLINEAR CONTROL; QUATERNION FEEDBACK; MANEUVERS AB An attitude control law is derived to realize linear unforced error dynamics with the attitude error defined in terms of rotation group algebra (rather than vector algebra). Euler parameters are used in the rotational dynamics model because they are globally nonsingular, but only the minimal three Euler parameters are used in the error dynamics model because they have no nonlinear mathematical constraints to prevent the realization of linear error dynamics. The control law is singular only when the attitude error angle is exactly pi rad about any eigenaxis, and a simple intuitive modification at the singularity allows the control law to be used globally. The forced error dynamics are nonlinear but stable. Numerical simulation tests show that the control law performs robustly for both initial attitude acquisition and attitude control. RP PAIELLI, RA (reprint author), NASA,AMES RES CTR,DIV FLIGHT SYST & SIMULAT RES,MAILSTOP 210-9,MOFFETT FIELD,CA 94035, USA. NR 11 TC 26 Z9 27 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 1993 VL 16 IS 1 BP 182 EP 189 DI 10.2514/3.11444 PG 8 WC Engineering, Aerospace; Instruments & Instrumentation SC Engineering; Instruments & Instrumentation GA KJ330 UT WOS:A1993KJ33000026 ER PT J AU JENSEN, BJ HERGENROTHER, PM NWOKOGU, G AF JENSEN, BJ HERGENROTHER, PM NWOKOGU, G TI POLY(ARYLENE ETHER)S WITH PENDANT ETHYNYL GROUPS SO JOURNAL OF MACROMOLECULAR SCIENCE-PURE AND APPLIED CHEMISTRY LA English DT Article AB Three novel bisphenols containing pendant ethynyl, hexynyl, and phenylethynyl groups were synthesized and used to prepare arylene ether polymers and copolymers. When heated to 250-350-degrees-C, the ethynyl groups react. After curing, the homopolymers were brittle due to the high crosslink density. Copolymers prepared using either 10 or 30 mol% of the ethynyl-containing bisphenol and either 90 or 70 mol% of the bisphenol with no ethynyl groups were relatively tough and formed creasible films. After a thermal cure, the copolymers became insoluble and exhibited high T(g)s and good thin film tensile properties. C1 HAMPTON UNIV,HAMPTON,VA 23668. RP JENSEN, BJ (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23681, USA. NR 3 TC 15 Z9 15 U1 0 U2 2 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 1060-1325 J9 J MACROMOL SCI PURE JI J. Macromol. Sci.-Pure Appl. Chem. PY 1993 VL A30 IS 6-7 BP 449 EP 458 DI 10.1080/10601329308009421 PG 10 WC Polymer Science SC Polymer Science GA LJ029 UT WOS:A1993LJ02900007 ER PT J AU CHOI, SR SALEM, JA HEBSUR, MG AF CHOI, SR SALEM, JA HEBSUR, MG TI EVALUATION OF THE FRACTURE-TOUGHNESS OF NB-40AL-8CR-1W-1Y-0.05B INTERMETALLIC MATERIAL BY INDENTATION TECHNIQUES SO JOURNAL OF MATERIALS SCIENCE LA English DT Article AB The fracture toughness of an Nb-40Al-8Cr-1W-1Y-0.05B intermetallic material was evaluated by indentation techniques at room temperature. Two widely used indentation methods, crack size measurement and indent strength, yielded excellent agreement with a conventional fracture toughness technique using straight-through precracked specimens, despite the occasional formation of poorly configured cracks. However, the modified indentation technique, using dummy indent flaws, resulted in a low fracture toughness compared to that evaluated by the other methods. The material did not exhibit rising R-curve behaviour, as evaluated from the indentation strength data. These results indicate that indentation fracture principles are applicable to this brittle intermetallic material without modification of the residual contact stress term originally calibrated for ceramic materials. C1 SVERDRUP TECHNOL INC,LEWIS RES CTR GRP,BROOK PK,OH 44142. RP CHOI, SR (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 12 TC 3 Z9 4 U1 0 U2 0 PU CHAPMAN HALL LTD PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8HN SN 0022-2461 J9 J MATER SCI JI J. Mater. Sci. PD JAN 1 PY 1993 VL 28 IS 1 BP 155 EP 160 DI 10.1007/BF00349046 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA KM821 UT WOS:A1993KM82100022 ER PT J AU FITZPATRICK, BG AF FITZPATRICK, BG TI MODELING AND ESTIMATION PROBLEMS FOR STRUCTURED HETEROGENEOUS POPULATIONS SO JOURNAL OF MATHEMATICAL ANALYSIS AND APPLICATIONS LA English DT Article ID DISTRIBUTIONS C1 NASA,LANGLEY RES CTR,ICASE,HAMPTON,VA 23665. RP FITZPATRICK, BG (reprint author), N CAROLINA STATE UNIV,DEPT MATH,RALEIGH,NC 27695, USA. NR 12 TC 8 Z9 9 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 0022-247X J9 J MATH ANAL APPL JI J. Math. Anal. Appl. PD JAN 1 PY 1993 VL 172 IS 1 BP 73 EP 91 DI 10.1006/jmaa.1993.1008 PG 19 WC Mathematics, Applied; Mathematics SC Mathematics GA KJ460 UT WOS:A1993KJ46000008 ER PT J AU DEVI, VM BENNER, DC SMITH, MAH RINSLAND, CP AF DEVI, VM BENNER, DC SMITH, MAH RINSLAND, CP TI MEASUREMENTS OF AIR-BROADENING AND PRESSURE-SHIFTING OF METHANE LINES IN THE 2.3-MU-M REGION SO JOURNAL OF MOLECULAR SPECTROSCOPY LA English DT Article ID LORENTZ WIDTH; NU-3 BAND; (CH4)-C-12; PARAMETERS; COEFFICIENTS; COLLISIONS; STRENGTHS; NITROGEN; ARGON C1 NASA,LANGLEY RES CTR,DIV ATMOSPHER SCI,HAMPTON,VA 23681. RP DEVI, VM (reprint author), COLL WILLIAM & MARY,DEPT PHYS,WILLIAMSBURG,VA 23187, USA. NR 20 TC 22 Z9 23 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 0022-2852 J9 J MOL SPECTROSC JI J. Mol. Spectrosc. PD JAN PY 1993 VL 157 IS 1 BP 95 EP 111 DI 10.1006/jmsp.1993.1008 PG 17 WC Physics, Atomic, Molecular & Chemical; Spectroscopy SC Physics; Spectroscopy GA KG517 UT WOS:A1993KG51700008 ER PT J AU MEZA, G ACUNA, D DAUNTON, N GUTIERREZ, A MERCHAN, JM RUEDA, J SALAS, M AF MEZA, G ACUNA, D DAUNTON, N GUTIERREZ, A MERCHAN, JM RUEDA, J SALAS, M TI DEVELOPMENT OF VESTIBULAR FUNCTION - AN INTERDISCIPLINARY APPROACH SO JOURNAL OF NEUROCHEMISTRY LA English DT Meeting Abstract C1 UNIV MEXICO,MEXICO CITY,DF,MEXICO. NASA,RES CTR,AMES,CA. UNIV ALICANTE,ALICANTE,SPAIN. NR 0 TC 0 Z9 0 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQ, PHILADELPHIA, PA 19106 SN 0022-3042 J9 J NEUROCHEM JI J. Neurochem. PY 1993 VL 61 SU S BP S147 EP S147 PG 1 WC Biochemistry & Molecular Biology; Neurosciences SC Biochemistry & Molecular Biology; Neurosciences & Neurology GA LM565 UT WOS:A1993LM56500579 ER PT J AU WHEELER, RM BERRY, WL MACKOWIAK, C COREY, KA SAGER, JC HEEB, MM KNOTT, WM AF WHEELER, RM BERRY, WL MACKOWIAK, C COREY, KA SAGER, JC HEEB, MM KNOTT, WM TI A DATA-BASE OF CROP NUTRIENT USE, WATER-USE, AND CARBON-DIOXIDE EXCHANGE IN A 20 SQUARE METER GROWTH CHAMBER .1. WHEAT AS A CASE-STUDY SO JOURNAL OF PLANT NUTRITION LA English DT Article ID GAS-EXCHANGE AB A data set is given describing the daily nutrient uptake, gas exchange, environmental conditions, and carbon (C), and nutrient partitioning at harvest for the entire canopy and root system of a wheat crop (Triticum aestivum, cv. Yecora Rojo). The data were obtained from a 20 m2 stand of wheat plants grown from planting to maturity in a closed, controlled environment, and include daily nutrient uptake [macronutrients, nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), and sulfur (S); and micronutrients, iron (Fe), boron (B), manganese (Mn), zinc (Zn), copper (Cu), and molybdenum (Mo)], canopy carbon dioxide (CO2) exchange rates, and transpiration. Environmental factors such as relative humidity, air temperature, nutrient solution temperature, pH and electrical conductivity, and photoperiod were controlled in the chamber to specific set points. A detailed description of biomass yield for each of the 64 plant growth trays comprising the 20 m2 of growth area is also provided, and includes dry weights of grain, straw, chaff, and roots, along with the concentration of nutrients in different plant tissues and the percent carbohydrate, fat, and protein. To our knowledge, this information represents one of the most extensive data sets available for a canopy of wheat grown from seed to maturity under controlled environmental and nutritional conditions, and thus may provide useful information for model development and validation. A methods section is included to qualify any assumptions that might be required for the use of the data in plant growth models, along with a daily event calendar indicating when adjustments in set points and occasional equipment or sensor failures occurred. RP WHEELER, RM (reprint author), NASA,BIOMED OPERAT & RES OFF,MAIL CODE MD-RES,KENNEDY SPACE CTR,FL 32890, USA. NR 14 TC 7 Z9 8 U1 2 U2 9 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0190-4167 J9 J PLANT NUTR JI J. Plant Nutr. PY 1993 VL 16 IS 10 BP 1881 EP 1915 DI 10.1080/01904169309364659 PG 35 WC Plant Sciences SC Plant Sciences GA MA241 UT WOS:A1993MA24100001 PM 11538007 ER PT J AU CHEN, SK LEFEBVRE, AH ROLLBUHLER, J AF CHEN, SK LEFEBVRE, AH ROLLBUHLER, J TI INFLUENCE OF AMBIENT AIR-PRESSURE ON EFFERVESCENT ATOMIZATION SO JOURNAL OF PROPULSION AND POWER LA English DT Article ID ATOMIZERS AB The influence of ambient air pressure on the drop-size distributions produced in effervescent atomization is examined in this article. Also investigated are the effects on spray characteristics of variations in air/liquid mass ratio, liquid-injection pressure, and atomizer discharge-orifice diameter at different levels of ambient air pressure. It is found that continuous increase in air pressure above the normal atmospheric value causes the mean drop-size to first increase up to a maximum value and then decline. An explanation for this characteristic is provided in terms of the various contributing factors to the overall atomization process. It is a[so observed that changes in atomizer geometry and operating conditions have little effect on the distribution of drop-sizes in the spray. C1 NASA,LEWIS RES CTR,COMBUST TECHNOL BRANCH,CLEVELAND,OH 44135. RP CHEN, SK (reprint author), PURDUE UNIV,SCH MECH ENGN,W LAFAYETTE,IN 47907, USA. NR 14 TC 20 Z9 25 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD JAN-FEB PY 1993 VL 9 IS 1 BP 10 EP 15 DI 10.2514/3.11479 PG 6 WC Engineering, Aerospace SC Engineering GA KH098 UT WOS:A1993KH09800003 ER PT J AU ROGERS, RC WEIDNER, EH AF ROGERS, RC WEIDNER, EH TI SCRAMJET FUEL-AIR MIXING ESTABLISHMENT IN A PULSE FACILITY SO JOURNAL OF PROPULSION AND POWER LA English DT Article AB A numerical simulation of the temporally developing now through a generic scramjet combustor duct is presented for stagnation conditions typical of night at Mach 13. The particular focus is to examine the startup transients and to determine the time required for certain flow parameters to become established. The calculations were made with a Navier-Stokes solver SPARK with temporally relaxing inflow conditions derived from the operation of the T4 shock tunnel at the University of Queensland in Australia. The generic combustor geometry includes the injection of hydrogen fuel from the base of a centrally located strut. The flow was assumed laminar and fuel combustion was not included. The establishment process is presented for viscous parameters in the boundary layer and for parameters related to the fuel-air mixing. RP ROGERS, RC (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23665, USA. NR 12 TC 3 Z9 4 U1 1 U2 3 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0748-4658 J9 J PROPUL POWER JI J. Propul. Power PD JAN-FEB PY 1993 VL 9 IS 1 BP 127 EP 133 DI 10.2514/3.11494 PG 7 WC Engineering, Aerospace SC Engineering GA KH098 UT WOS:A1993KH09800018 ER PT J AU MARGOLIS, JS AF MARGOLIS, JS TI HYDROGEN BROADENING AND COLLISION-INDUCED LINE SHIFTS OF METHANE AT 4200 CM-1 SO JOURNAL OF QUANTITATIVE SPECTROSCOPY & RADIATIVE TRANSFER LA English DT Article ID LOW-TEMPERATURES; LORENTZ WIDTH; (CH4)-C-12; NITROGEN; ARGON; COEFFICIENTS; HELIUM AB Many of the lines of the nu1 + nu4 and nu3 + nu4 bands of methane in the vicinity of 4200 cm - 1 have been assigned and are reported in the HITRAN data-base which is commonly used for atmospheric transmission calculations in the i.r. In this paper, the collision-induced broadening coefficients of hydrogen for more than 200 of these lines are reported. Also, by using the water-vapor lines which occur in the spectra as calibration marks, the frequencies of the broadened lines were determined. This permitted the collision-induced line shifts to be measured for lines sufficiently isolated from interfering blends: all of the shifts which could be reliably determined in this way were negative. RP MARGOLIS, JS (reprint author), CALTECH,JET PROPULS LAB,4800 OAK GROVE DR,PASADENA,CA 91190, USA. NR 12 TC 6 Z9 6 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0022-4073 J9 J QUANT SPECTROSC RA JI J. Quant. Spectrosc. Radiat. Transf. PD JAN PY 1993 VL 49 IS 1 BP 71 EP 79 DI 10.1016/0022-4073(93)90019-E PG 9 WC Optics; Spectroscopy SC Optics; Spectroscopy GA KD155 UT WOS:A1993KD15500006 ER PT J AU ATKINSON, S GILMARTIN, WG LASLEY, BL AF ATKINSON, S GILMARTIN, WG LASLEY, BL TI TESTOSTERONE RESPONSE TO A GONADOTROPIN-RELEASING-HORMONE AGONIST IN HAWAIIAN MONK SEALS (MONACHUS-SCHAUINSLANDI) SO JOURNAL OF REPRODUCTION AND FERTILITY LA English DT Article ID MICROCAPSULES; INHIBITION; ANALOG; RATS AB Adult male Hawaiian monk seals were administered a gonadotrophin-releasing hormone (GnRH) agonist to determine its effectiveness in reducing the testicular production of testosterone. Blood samples were collected from four treated seals and two control seals at weekly intervals for 10 weeks and again at the beginning of the following breeding season. The GnRH-agonist had an initial, brief, stimulating effect on circulating testosterone, but this was followed by an inhibitory effect that lasted for 7 to 8 weeks. The plasma concentrations of testosterone were within normal ranges by the following spring. These results demonstrate a reversible form of long-term androgen suppression, which may have applicability in a variety of wildlife management programmes. C1 NOAA,NATL MARINE FISHERIES SERV,SW FISHERIES SCI CTR,HONOLULU LAB,HONOLULU,HI 96822. UNIV CALIF DAVIS,SCH VET MED,DEPT REPROD,DAVIS,CA 95616. RP ATKINSON, S (reprint author), UNIV HAWAII,HAWAII INST MARINE BIOL,1000 POPE RD,MARINE SCI BLDG 212,HONOLULU,HI 96822, USA. NR 20 TC 11 Z9 11 U1 0 U2 0 PU J REPROD FERTIL INC PI CAMBRIDGE PA 22 NEWMARKET RD, CAMBRIDGE, ENGLAND CB5 8DT SN 0022-4251 J9 J REPROD FERTIL JI J. Reprod. Fertil. PD JAN PY 1993 VL 97 IS 1 BP 35 EP 38 PG 4 WC Reproductive Biology SC Reproductive Biology GA KK741 UT WOS:A1993KK74100006 PM 8464023 ER PT J AU GUPTA, RN AF GUPTA, RN TI STAGNATION FLOWFIELD ANALYSIS FOR AN AEROASSISTED VEHICLE SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article ID SHOCK-LAYER SOLUTIONS; SLENDER BODIES; FLOWS AB Hypersonic reactive flowfield results are presented for the flow about an axisymmetric representation of a three-dimensional aeroassisted vehicle using the viscous shock-layer (VSL) and Navier-Stokes (NS) equations for low- and high-altitude entry conditions, respectively. Solutions are limited to the stagnation region. The NS results have been obtained by employing the surface recombination boundary condition for an 11-species air model, whereas the VSL calculations are carried out by using a 5-species model. Three widely used surface recombination rate models are implemented with these two flowfield calculation procedures. The low-density (or high altitude) NS solutions are obtained with surface slip equations and compare quite well with the direct simulation Monte Carlo predictions. For higher densities (or lower altitudes), the no-slip VSL solutions are considered adequate. Results from this study highlight the effect of surface catalyticity on surface heating and electron number density. RP GUPTA, RN (reprint author), NASA,LANGLEY RES CTR,DIV SPACE SYST,AEROTHERMODYNAM BRANCH,HAMPTON,VA 23681, USA. NR 38 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 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JAN-FEB PY 1993 VL 30 IS 1 BP 14 EP 21 DI 10.2514/3.25466 PG 8 WC Engineering, Aerospace SC Engineering GA KN943 UT WOS:A1993KN94300003 ER PT J AU CHEN, YK HENLINE, WD STEWART, DA CANDLER, GV AF CHEN, YK HENLINE, WD STEWART, DA CANDLER, GV TI NAVIER-STOKES SOLUTIONS WITH SURFACE CATALYSIS FOR MARTIAN ATMOSPHERIC ENTRY SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB In this study numerical solutions have been obtained for axisymmetric hypersonic nonequilibrium CO2 flow over a large-angle blunt cone with appropriate surface boundary conditions to account for energy and mass conservation at the body surface. The flowfield is described by the Navier-Stokes equations and multicomponent conservation laws that account for both translational and internal vibrational nonequilibrium effects. Complete forebody solutions have been obtained for the peak heating point of the Mars entry trajectory specified in the proposed NASA MESUR (Mars Environmental Survey) project. In these solutions, radiative equilibrium wall temperature and surface heating distributions are determined over the MESUR aeroshell forebody with varying degrees of surface catalysis. The aeroshell nose radius is 0.425 m, and freestream conditions occur at an altitude of 41,668 m, ambient density of 0.2687 x 10(-3) kg/m3, and velocity of 6155 m/s. The effects of gas kinetics, surface catalysis, and transport properties on the surface heating are examined. The results identify some important issues in the prediction of surface heating for flows in thermochemical nonequilibrium and show that the Navier-Stokes code used herein provides useful information for thermal protection system design and materials selection. C1 ELORET INST,PALO ALTO,CA 94303. N CAROLINA STATE UNIV,DEPT MECH ENGN,RALEIGH,NC 27612. RP CHEN, YK (reprint author), NASA,AMES RES CTR,THERMAL PROTECT MAT BRANCH,MOFFETT FIELD,CA 94035, USA. NR 25 TC 29 Z9 30 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JAN-FEB PY 1993 VL 30 IS 1 BP 32 EP 42 DI 10.2514/3.25468 PG 11 WC Engineering, Aerospace SC Engineering GA KN943 UT WOS:A1993KN94300005 ER PT J AU RUFFIN, SM PARK, C AF RUFFIN, SM PARK, C TI VIBRATIONAL-RELAXATION OF ANHARMONIC-OSCILLATORS IN EXPANDING FLOWS SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB Although the Landau-Teller vibrational model accurately predicts the vibrational excitation process in postshock and compressing flows, it underpredicts the rate of de-excitation in cooling and expanding flows. In the present paper, detailed calculations of the vibrational relaxation process of N2 and CO in cooling flows are conducted. A coupled set of vibrational transition rate equations and quasi-one-dimensional fluid dynamic equations is solved. Multiple quantum level transition rates are computed using SSH theory. The SSH transition rate results are compared with available experimental data and other theoretical models. Vibration-vibration exchange collisions are responsible for some vibrational relaxation acceleration in situations of high vibrational temperature and low translational temperature. The present results support the relaxation mechanisms proposed by Bray and by Treanor, Rich and Rehm. Qualitative agreement with experimental results is achieved for the overall vibrational relaxation rate; however, the accuracy of the SSH results for vibration-vibration exchange transitions must be studied further and additional experimental investigations are needed for quantitative agreement. C1 NASA,AMES RES CTR,DIV THERMOSCI,AEROTHERMODYNAM BRANCH,AEROTHERMODYNAM SECT,MOFFETT FIELD,CA 94035. RP RUFFIN, SM (reprint author), NASA,AMES RES CTR,DIV THERMOSCI,MS 230-2,MOFFETT FIELD,CA 94035, USA. NR 21 TC 11 Z9 11 U1 1 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JAN-FEB PY 1993 VL 30 IS 1 BP 59 EP 68 DI 10.2514/3.25471 PG 10 WC Engineering, Aerospace SC Engineering GA KN943 UT WOS:A1993KN94300008 ER PT J AU HASSAN, B DEJARNETTE, FR ZOBY, EV AF HASSAN, B DEJARNETTE, FR ZOBY, EV TI EFFECT OF NOSE SHAPE ON 3-DIMENSIONAL STREAMLINES AND HEATING RATES SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB A new method for calculating the three-dimensional inviscid surface streamlines and streamline metrics using Cartesian coordinates and time as the independent variable of integration has been developed. The technique calculates the streamline from a specified point on the body to a point near the stagnation point by using a prescribed pressure distribution in the Euler equations. The differential equations, which are singular at the stagnation point, are of the two-point boundary-value-problem type. Laminar heating rates are calculated using the axisymmetric analog concept for three-dimensional boundary layers and approximate solutions to the axisymmetric boundary-layer equations. Results for elliptic conic forebody geometries indicate that the location of the point of maximum heating depends on the angle of attack of the conic and the type of conic in the plane of symmetry. This location is in general different from the stagnation point. The new method was found to give smooth predictions of heat transfer in the nose region where previous methods gave oscillatory results. C1 NASA,LANGLEY RES CTR,DIV SPACE SYST,AEROTHERMODYNAM BRANCH,HAMPTON,VA 23681. RP HASSAN, B (reprint author), N CAROLINA STATE UNIV,RALEIGH,NC 27695, USA. NR 20 TC 1 Z9 1 U1 0 U2 1 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JAN-FEB PY 1993 VL 30 IS 1 BP 69 EP 78 DI 10.2514/3.25472 PG 10 WC Engineering, Aerospace SC Engineering GA KN943 UT WOS:A1993KN94300009 ER PT J AU CHEN, GS WADA, BK AF CHEN, GS WADA, BK TI ADAPTIVE TRUSS MANIPULATOR SPACE CRANE CONCEPT SO JOURNAL OF SPACECRAFT AND ROCKETS LA English DT Article AB An adaptive truss manipulator (ATM) space crane concept for in-space assembly and construction is described in this paper. The underlying mechanism of ATM operation is based on the geometric transformation of its constituent truss modules. In this paper, kinematic description of an ATM is based on the Jacobian matrix derived via the solution technique developed in truss structural analysis, i.e., ''extended method of joints.'' The algorithm based on this method is of computational complexity theta(m2) where m is the number of truss members in the ATM. Numerical simulations were performed to demonstrate the ATM's key features including deployment/retraction, articulation, and operation with bracing strategy. Such features, especially the bracing strategy, offer a great deal of potential in meeting the operational requirements of the in-space assembly and construction scenarios. RP CHEN, GS (reprint author), JET PROP LAB,APPL MECH TECHNOL SECT,MAIL STOP 157-316,PASADENA,CA 91109, USA. NR 20 TC 5 Z9 7 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0022-4650 J9 J SPACECRAFT ROCKETS JI J. Spacecr. Rockets PD JAN-FEB PY 1993 VL 30 IS 1 BP 111 EP 115 DI 10.2514/3.25477 PG 5 WC Engineering, Aerospace SC Engineering GA KN943 UT WOS:A1993KN94300014 ER PT J AU JACOBSON, NS AF JACOBSON, NS TI CORROSION OF SILICON-BASED CERAMICS IN COMBUSTION ENVIRONMENTS SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Review ID SINGLE-CRYSTAL SILICON; THERMAL-OXIDATION; HOT CORROSION; SIC CERAMICS; PASSIVE TRANSITION; OXIDE SCALES; NITRIDE; CARBIDE; SI3N4; KINETICS AB Silicon-based ceramics and composites are prime candidates for heat engine and heat exchanger structural components. In such applications these materials are exposed to combustion gases and deposit-forming corrodents. In this paper combustion environments are defined for various applications. These environments lead to five main types of corrosive degradation: passive oxidation, deposit-induced corrosion, active oxidation, scale/substrate interactions, and scale volatility. Each of these is discussed in detail. The key issues in oxidation mechanisms of high-purity silicon carbide (SiC) and silicon nitride (Si3N4) in pure oxygen are discussed. The complicating factors due to the actual combustion environment and commercial materials are discussed. These discussions include secondary elements in the ceramics; additional oxidants, such as water and carbon dioxide (CO2); combustion environment impurities; long-term oxidation effects; and thermal cycling. Active oxidation is expected in a limited number of combustion situations, and the active-to-passive transition is discussed. At high temperatures the limiting factors are scale melting, scale volatility, and scale/substrate interactions. Deposit-induced corrosion is discussed, primarily for sodium sulfate (Na2SO4), but also for vanadate and oxide-slag deposits as well. In applying ceramics in combustion environments it is essential to be aware of these corrosion routes and how they affect the performance of a component. RP JACOBSON, NS (reprint author), NASA,LEWIS RES CTR,ENVIRONM DURABIL GRP,CLEVELAND,OH 44135, USA. RI Jacobson, Nathan/A-9411-2009 NR 155 TC 451 Z9 465 U1 11 U2 99 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD JAN PY 1993 VL 76 IS 1 BP 3 EP 28 DI 10.1111/j.1151-2916.1993.tb03684.x PG 26 WC Materials Science, Ceramics SC Materials Science GA LD474 UT WOS:A1993LD47400001 ER PT J AU CAGLIOSTRO, DE RICCITIELLO, SR AF CAGLIOSTRO, DE RICCITIELLO, SR TI MODEL FOR THE FORMATION OF SILICON-CARBIDE FROM THE PYROLYSIS OF DICHLORODIMETHYLSILANE IN HYDROGEN .1. SILICON FORMATION FROM CHLOROSILANES SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article ID CHEMICAL VAPOR-DEPOSITION; CERAMIC COMPOSITES; INFILTRATION; FABRICATION; KINETICS; HSICL AB Silicon tetrachloride is a major product of the pyrolysis of dichlorodimethylsilane in hydrogen. A model is developed for the deposition of silicon from the reduction of silicon tetrachloride with hydrogen in a tubular reactor at temperatures from 700-degrees to 1100-degrees-C and 1.013 x 10(5) Pa (1 atm) pressure. Concentrations of silicon tetrachloride varied from 1 to 9 vol%. Gas chromatography was used to determine the volatile products of reaction, and gravimetric analysis was used to determine the total silicon deposition on the tube. The model, based on the experimental data, assumes the following reversible chemical reactions: SiCl4 + H-2 double line arrow pointing left and right HSiCl3 + HCl HSiCl3 + H-2 double line arrow pointing left and right H2SiCl2 + HCl H2SiCl2 double line arrow pointing left and right Si + 2HCI The rate constants derived from a nonlinear regression analysis are reported. RP CAGLIOSTRO, DE (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 31 TC 13 Z9 13 U1 0 U2 2 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD JAN PY 1993 VL 76 IS 1 BP 39 EP 48 DI 10.1111/j.1151-2916.1993.tb03687.x PG 10 WC Materials Science, Ceramics SC Materials Science GA LD474 UT WOS:A1993LD47400004 ER PT J AU CAGLIOSTRO, DE RICCITIELLO, SR AF CAGLIOSTRO, DE RICCITIELLO, SR TI MODEL FOR THE FORMATION OF SILICON-CARBIDE FROM THE PYROLYSIS OF DICHLORODIMETHYLSILANE IN HYDROGEN .2. SILICON-CARBIDE FORMATION FROM SILICON AND METHANE SO JOURNAL OF THE AMERICAN CERAMIC SOCIETY LA English DT Article AB A model is developed for the deposition of silicon carbide from the pyrolysis of dichlorodimethylsilane in hydrogen, in a tubular reactor at temperatures from 700-degrees to 1100-degrees-C and 1.013 X 10(5) Pa (1 atm) pressure. Concentration of dichlorodimethylsilane varied from 2 to 8 vol%. Gas chromatography was used to determine the volatile products of reaction, and gravimetric analysis was used to determine the total silicon and silicon carbide deposition on the tube. The model developed based on the experimental data that assumes the following chemical reactions: (CH3)2SiCl2 + 2H-2 --> 2CH4 + H2SiCl2 HSiCl3 + H-2 double-line arrow pointing left and right H2SiCl2 + HCl H2SiCl2 double-line arrow pointing left and right 2HCl + Si HSiCl3 + HCl double-line arrow pointing left and right SiCl4 + H-2 Si + CH4 --> SiC + 2H-2 The rate constants derived from a nonlinear regression analysis are reported. RP CAGLIOSTRO, DE (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 9 TC 15 Z9 15 U1 0 U2 2 PU AMER CERAMIC SOC PI WESTERVILLE PA 735 CERAMIC PLACE, PO BOX 6136, WESTERVILLE, OH 43081-6136 SN 0002-7820 J9 J AM CERAM SOC JI J. Am. Ceram. Soc. PD JAN PY 1993 VL 76 IS 1 BP 49 EP 53 DI 10.1111/j.1151-2916.1993.tb03688.x PG 5 WC Materials Science, Ceramics SC Materials Science GA LD474 UT WOS:A1993LD47400005 ER PT J AU ESHOW, MM SCHROEDER, JA AF ESHOW, MM SCHROEDER, JA TI IMPROVEMENTS IN HOVER DISPLAY DYNAMICS FOR A COMBAT HELICOPTER SO JOURNAL OF THE AMERICAN HELICOPTER SOCIETY LA English DT Article AB This paper describes a piloted simulation conducted on the NASA Ames Vertical Motion Simulator. The objective of the experiment was to investigate the handling qualities benefits attainable using new display law design methods for hover displays. The new display laws provide improved methods to specify the behavior of the display symbol that predicts the vehicle's ground velocity in the horizontal plane; it is the primary symbol that the pilot uses to control aircraft horizontal position. The display law design was applied to the Apache helmet-mounted display format, using the Apache vehicle dynamics to tailor the dynamics of the velocity predictor symbol. The representations of the Apache vehicle used in the display design process and in the simulation were derived from flight data. During the simulation, the new symbol dynamics were seen to improve the pilots' ability to maneuver about hover in poor visual cuing environments. The improvements were manifested in pilot handling qualities ratings and in measured task performance. The paper details the display design techniques, the experiment design and conduct, and the results. C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. RP ESHOW, MM (reprint author), USA,ATCOM,AEROFLIGHTDYNAM DIRECTORATE,MOFFETT FIELD,CA 94035, USA. NR 13 TC 1 Z9 1 U1 0 U2 0 PU AMER HELICOPTER SOC INC PI ALEXANDRIA PA 217 N WASHINGTON ST, ALEXANDRIA, VA 22314 SN 0002-8711 J9 J AM HELICOPTER SOC JI J. Am. Helicopter Soc. PD JAN PY 1993 VL 38 IS 1 BP 17 EP 28 PG 12 WC Engineering, Aerospace SC Engineering GA KT429 UT WOS:A1993KT42900002 ER PT J AU MURRI, GB OBRIEN, TK SALPEKAR, SA AF MURRI, GB OBRIEN, TK SALPEKAR, SA TI TENSION FATIGUE OF GLAS EPOXY AND GRAPHITE EPOXY TAPERED LAMINATES SO JOURNAL OF THE AMERICAN HELICOPTER SOCIETY LA English DT Article AB Symmetric tapered laminates with internally dropped plies were tested with two different layups, and two materials - S2/SP250 glass/epoxy and IM6/1827I graphite/epoxy. Layup A was a [0(9)/(+/-45)3/(+/-45)2]s laminate that reduced to a [0(9)/(+/-45)2]2 laminate by dropping the (+/-45)3 ply group. Layup B was a [0(7)/+/-45/(+/-45)3/0/+/-45/0]s, laminate that reduced to a [0(7)/+/-45/0/+/-45/0]s laminate in the same manner as layup A. The specimens were loaded in cyclic tension until they delaminated unstably. Each combination of material and layup had a different failure mode. Expected delamination failure loads were calculated for the different failure modes using mode I fatigue delamination characterization data and either calculated values of strain energy release rate, G, from a finite element (FE) analysis model of delamination along the taper, or, calculated G values for delamination from a matrix ply crack, modeled according to the actual observed specimen failures. Calculated delamination loads were compared to the experimental results. The agreement between the calculated and measured delamination onset loads was reasonable for each combination of layup and material. C1 ANALYT SERV & MAT INC,HAMPTON,VA. RP MURRI, GB (reprint author), NASA,LANGLEY RES CTR,USA,RES LAB,HAMPTON,VA 23665, USA. NR 23 TC 13 Z9 13 U1 0 U2 1 PU AMER HELICOPTER SOC INC PI ALEXANDRIA PA 217 N WASHINGTON ST, ALEXANDRIA, VA 22314 SN 0002-8711 J9 J AM HELICOPTER SOC JI J. Am. Helicopter Soc. PD JAN PY 1993 VL 38 IS 1 BP 29 EP 37 PG 9 WC Engineering, Aerospace SC Engineering GA KT429 UT WOS:A1993KT42900003 ER PT J AU RORVIG, ME AF RORVIG, ME TI A METHOD FOR AUTOMATICALLY ABSTRACTING VISUAL DOCUMENTS SO JOURNAL OF THE AMERICAN SOCIETY FOR INFORMATION SCIENCE LA English DT Article AB Visual documents-motion sequences on film, videotape, and digital recordings-constitute a major source of information for the Space Agency, as well as all other government and private sector entities. This article describes a method for automatically selecting key frames from visual documents. These frames may in turn be used to represent the total image sequence of visual documents in visual libraries, hypermedia systems, and training guides. The performance of the abstracting algorithm reduces 51 minutes of video sequences to 134 frames; a reduction of information in the range of 700:1. RP RORVIG, ME (reprint author), NASA,LYNDON B JOHNSON SPACE CTR,SOFTWARE TECHNOL BRANCH,HOUSTON,TX 77058, USA. NR 7 TC 17 Z9 16 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0002-8231 J9 J AM SOC INFORM SCI JI J. Am. Soc. Inf. Sci. PD JAN PY 1993 VL 44 IS 1 BP 40 EP 56 DI 10.1002/(SICI)1097-4571(199301)44:1<40::AID-ASI5>3.0.CO;2-J PG 17 WC Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA KD445 UT WOS:A1993KD44500005 ER PT J AU DESAI, PN BUGLIA, JJ AF DESAI, PN BUGLIA, JJ TI ARRIVAL AND DEPARTURE IMPULSIVE DELTA-V DETERMINATION FOR PRECESSING MARS PARKING ORBITS SO JOURNAL OF THE ASTRONAUTICAL SCIENCES LA English DT Article AB The arbitrary assumption of using tangential periapsis burns at both Mars arrival and departure, without considering the actual geometry between the parking orbit and the inbound and outbound hyperbolic asymptotes, can lead to a misleading estimate of the initial low-Earth orbit departure mass of the Mars vehicle. However, performing a detailed simulation where the actual arrival and departure geometries are analyzed would require extensive computation times. Therefore, in an effort to obtain a realistic estimate of the initial low-Earth orbit mass without sacrificing computation time, the method outlined in this paper was developed. This method, which builds on previous work, considers the actual geometry between the inbound and outbound hyperbolic asymptotes and the parking orbit, along with the precession effects caused by the oblateness of Mars, in calculating the arrival and departure DELTAV values. Thus, a realistic estimate of the vehicle mass in low-Earth orbit can be produced. Three different mission scenarios representing alternatives to the arbitrary assumed tangential periapsis burns are presented: 1) a tangential periapsis arrival and an in-plane departure; 2) an in-plane arrival and an in-plane departure; and 3) a tangential periapsis arrival and a three-dimensional departure (i.e., a departure burn with an in-plane and an out-of-plane DELTAV component). The results obtained by this method compared very well for all three cases with a trajectory integration code, where the differences in the initial low-Earth orbit mass were within one percent. The computation times for the first and third mission scenarios were on the order of a few CPU seconds, while the second mission scenario required a few minutes of CPU time. Therefore, the present method would be an ideal tool for preliminary mission design, as it reduces the computation time of the analysis with only minimal loss in accuracy. C1 FLIGHT MECH & CONTROL INC,HAMPTON,VA. RP DESAI, PN (reprint author), NASA,LANGLEY RES CTR,DIV SPACE SYST,HAMPTON,VA 23665, USA. NR 15 TC 2 Z9 2 U1 0 U2 1 PU AMER ASTRONAUTICAL SOC PI SPRINGFIELD PA 6352 ROLLING MILL PLACE SUITE 102, SPRINGFIELD, VA 22152 SN 0021-9142 J9 J ASTRONAUT SCI JI J. Astronaut. Sci. PD JAN-MAR PY 1993 VL 41 IS 1 BP 1 EP 18 PG 18 WC Engineering, Aerospace SC Engineering GA LE959 UT WOS:A1993LE95900001 ER PT J AU PARK, CK SCHUBERT, SD AF PARK, CK SCHUBERT, SD TI REMOTELY FORCED INTRASEASONAL OSCILLATIONS OVER THE TROPICAL ATLANTIC SO JOURNAL OF THE ATMOSPHERIC SCIENCES LA English DT Article ID OUTGOING LONGWAVE RADIATION; NORTHERN HEMISPHERE SUMMER; GENERAL-CIRCULATION MODEL; AMAZON BASIN RAINFALL; 40-50 DAY OSCILLATION; SOUTHERN OSCILLATION; STATIONARY WAVES; ZONAL WIND; PROPAGATION; ATMOSPHERE AB Intraseasonal (20-70 day) variability is examined in the Atlantic region during Northern Hemisphere winter using ECMWF analyses and NOAA outgoing longwave radiation (OLR). It is found that the dominant 200-mb zonal-wind fluctuation over the tropical Atlantic, A1, is related to global-scale circulation anomalies with their origins in the Pacific. Compositing techniques are used to investigate the nature of the Pacific-Atlantic teleconnections and related changes in the tropical OLR and moisture convergence. The OLR anomalies associated with A1 are characterized by eastward propagation over the Indian Ocean and the western Pacific and a standing oscillation over the tropical Atlantic; the latter extends from Northeast Brazil to West Africa and is the dominant component of the Atlantic OLR variability on these time scales. An analysis of the velocity potential and moisture convergence fields suggests that the fluctuations in convection are coupled between the western Pacific and Atlantic via large-scale (zonal wavenumber 1), equatorially trapped, eastward-propagating waves associated with the Madden-Julian oscillation. The zonal-wind fluctuation, A1, is also related to extratropical waves propagating into the tropics from both the Northern and Southern hemispheres. The Southern Hemispheric wave train, which makes up the dominant contribution to the A1 circulation pattern, appears to emanate from the western South Pacific and amplifies near the west coast of South America. The Northern Hemispheric wave train resembles the Pacific/North American pattern and emanates from the central North Pacific near the East Asian jet exit region. These results suggest that a major component of the 20-70-day variability over the Atlantic region is remotely forced. The forcing occurs via the Madden-Julian oscillation, which is strongly coupled with eastward-migrating heating anomalies in the western Pacific and Rossby wave trains, which appear to have their origins in the middle latitudes of the Pacific. The Northern Hemispheric wave train appears to be maintained by energy exchange with the East Asian jet, while the nature of the Southern Hemispheric branch is unclear. C1 NASA, GODDARD SPACE FLIGHT CTR, ATMOSPHERES LAB, GREENBELT, MD 20771 USA. NR 33 TC 10 Z9 10 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0022-4928 EI 1520-0469 J9 J ATMOS SCI JI J. Atmos. Sci. PD JAN 1 PY 1993 VL 50 IS 1 BP 89 EP 103 DI 10.1175/1520-0469(1993)050<0089:RFIOOT>2.0.CO;2 PG 15 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KK600 UT WOS:A1993KK60000007 ER PT J AU DAILEY, MD FAST, ML BALAZS, GH AF DAILEY, MD FAST, ML BALAZS, GH TI HAPALOTREMA-DORSOPORA SP-N (TREMATODA, SPIRORCHIDAE) FROM THE HEART OF THE GREEN TURTLE (CHELONIA-MYDAS) WITH A REDESCRIPTION OF HAPALOTREMA-POSTORCHIS SO JOURNAL OF THE HELMINTHOLOGICAL SOCIETY OF WASHINGTON LA English DT Article DE TREMATODA; HAPALOTREMA-DORSOPORA SP-N; SPIRORCHIDAE; GREEN TURTLE; CHELONIA-MYDAS; HAWAII AB Hapalotrema dorsopora sp. n. from the heart of the green turtle Chelonia mydas is described. Hapalotrema dorsopora differs from all other members of the genus by having a separate dorsal uterine pore. Hapalotrema dorsopora most resembles Hapalotrema mehrai Rao, 1976, but differs, in addition to separate dorsal and ventral pores, in placement of testes and vitellaria and shape of ovary. Hapalotrema postorchis Rao, 1976, originally described from a single specimen, is redescribed. C1 NATL MARINE FISHERIES SERV,SW FISHERIES SCI CTR,HONOLULU LAB,HONOLULU,HI 96822. RP DAILEY, MD (reprint author), CALIF STATE UNIV LONG BEACH,INST OCEAN STUDIES,LONG BEACH,CA 90840, USA. NR 7 TC 12 Z9 12 U1 0 U2 0 PU HELMINTHOLOGICAL SOC WASHINGTON PI LAWRENCE PA C/O ALLEN PRESS INC, 1041 NEW HAMPSHIRE ST, LAWRENCE, KS 66044 SN 1049-233X J9 J HELMINTHOL SOC W JI J. Helminthol. Soc. Wash. PD JAN PY 1993 VL 60 IS 1 BP 5 EP 9 PG 5 WC Parasitology; Zoology SC Parasitology; Zoology GA KN931 UT WOS:A1993KN93100002 ER PT J AU KUMAR, BVKV JUDAY, RD RAJAN, PK AF KUMAR, BVKV JUDAY, RD RAJAN, PK TI SATURATED FILTERS (J OPT SOC AM A, VOL 9, PG 405, 1992) SO JOURNAL OF THE OPTICAL SOCIETY OF AMERICA A-OPTICS IMAGE SCIENCE AND VISION LA English DT Correction, Addition C1 NASA,LYNDON B JOHNSON SPACE CTR,HOUSTON,TX 77058. TENNESSEE TECHNOL UNIV,COOKEVILLE,TN 38505. RP KUMAR, BVKV (reprint author), CARNEGIE MELLON UNIV,PITTSBURGH,PA 15213, USA. NR 1 TC 0 Z9 0 U1 1 U2 1 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0740-3232 J9 J OPT SOC AM A JI J. Opt. Soc. Am. A-Opt. Image Sci. Vis. PD JAN PY 1993 VL 10 IS 1 BP 191 EP 191 DI 10.1364/JOSAA.10.000191 PG 1 WC Optics SC Optics GA KF645 UT WOS:A1993KF64500021 ER PT J AU SCOTT, CD AF SCOTT, CD TI SURVEY OF MEASUREMENTS OF FLOW PROPERTIES IN ARCJETS SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article C1 NASA, LYNDON B JOHNSON SPACE CTR, HOUSTON, TX 77058 USA. NR 58 TC 15 Z9 16 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JAN-MAR PY 1993 VL 7 IS 1 BP 9 EP 24 DI 10.2514/3.11563 PG 16 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA KU273 UT WOS:A1993KU27300002 ER PT J AU DZIEDZIC, WM JONES, SC GOULD, DC PETLEY, DH AF DZIEDZIC, WM JONES, SC GOULD, DC PETLEY, DH TI ANALYTICAL COMPARISON OF CONVECTIVE HEAT-TRANSFER CORRELATIONS IN SUPERCRITICAL HYDROGEN SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB Four correlations which cover the ranges of liquid to gas for turbulent now convection of hydrogen were compared with computational fluid dynamics (CFD) analysis over a range of expected design conditions for active cooling of hypersonic aircraft. The correlations compared here are those of Hess and Kunz; McCarthy and Wolf, Miller, Seader, and Trebes; and Taylor. Analysis of hydrogen cooling in a typical cooling panel demonstrated how predicted design performance varies with the correlation used. The Taylor heat transfer coefficient correlation demonstrated the best overall agreement with the CFD results for constant heat flux over a wide range of pressure, temperature, mass flow, and heat load conditions. The McCarthy and Wolf correlation also agreed well with the CFD results. The CFD heat transfer coefficient results for a heat spike differed greatly from all four correlations. An acceptable heat transfer coefficient can be calculated at the heat spike location by ignoring the coefficient at the spike and averaging the coefficient before-and-after the spike. Test data are needed to define the cooling effectiveness of hydrogen for two critical design conditions: 1) a heat spike for all inlet temperatures and pressures; and 2) high heat flux, with low inlet temperature, and high inlet pressure. C1 LOCKHEED ENGN & SCI CO, HAMPTON, VA 23666 USA. NASA, LANGLEY RES CTR, HAMPTON, VA 23681 USA. NR 12 TC 10 Z9 10 U1 1 U2 5 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JAN-MAR PY 1993 VL 7 IS 1 BP 68 EP 73 DI 10.2514/3.11571 PG 6 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA KU273 UT WOS:A1993KU27300010 ER PT J AU HOWE, JT YANG, L AF HOWE, JT YANG, L TI EARTH ATMOSPHERE ENTRY THERMAL PROTECTION BY RADIATION BACKSCATTERING ABLATING MATERIALS SO JOURNAL OF THERMOPHYSICS AND HEAT TRANSFER LA English DT Article AB Hypervelocity entry into Earth's atmosphere can expose the entry vehicle to severe radiative and convective heating environments that can cause ablation and a corresponding transient change in heat shield thickness. A computer code has been developed for a ''partially translucent'' heat-conducting thermal protection material that backscatters radiation in the depths of the material on a spectral basis, and allows ablation. The code accommodates time-variable finite material thickness, internal material phase change, wavelength-dependent radiative properties, and temperature-dependent thermal, physical, and radiative properties. Various combinations of time-dependent boundary conditions are allowed at both the exposed and backface boundaries. The gas phase of the ablated material from the exposed surface is dynamically mixed with, and thermochemically compatible with, the flowfield, and modifies the time-dependent convective and radiative heating imposed by the energetic airflow. Illustrative examples computed on the Cray 2 are presented. The code is useful to study thermal protection for hypervelocity flight and for material development testing. C1 NASA, AMES RES CTR, MOFFETT FIELD, CA 94035 USA. STERLING SOFTWARE, PALO ALTO, CA 94303 USA. NR 27 TC 7 Z9 7 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091-4344 USA SN 0887-8722 J9 J THERMOPHYS HEAT TR JI J. Thermophys. Heat Transf. PD JAN-MAR PY 1993 VL 7 IS 1 BP 74 EP 81 DI 10.2514/3.11572 PG 8 WC Thermodynamics; Engineering, Mechanical SC Thermodynamics; Engineering GA KU273 UT WOS:A1993KU27300011 ER PT J AU SUN, DC BREWE, DE ABEL, PB AF SUN, DC BREWE, DE ABEL, PB TI SIMULTANEOUS PRESSURE MEASUREMENT AND HIGH-SPEED PHOTOGRAPHY STUDY OF CAVITATION IN A DYNAMICALLY LOADED JOURNAL BEARING SO JOURNAL OF TRIBOLOGY-TRANSACTIONS OF THE ASME LA English DT Article ID SQUEEZE FILM DAMPER; FORCE COEFFICIENTS; DISTRIBUTIONS; CONFIGURATION AB Cavitation of the oil film in a dynamically loaded journal bearing was studied using high-speed photography and pressure measurement simultaneously. Comparison of the visual and pressure data provided considerable insight into the occurrence and non-occurrence of cavitation. It was found that (1), cavitation typically occurred in the form of one bubble with the pressure in the cavitation bubble close to the absolute zero; and (2), for cavitation-producing operating conditions, cavitation did not always occur; with the oil film then supporting a tensile stress. C1 USA,AVIAT RES & TECHNOL ACT AVSCOM,LEWIS RES CTR,PROP DIRECTORATE,CLEVELAND,OH 44135. NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP SUN, DC (reprint author), SUNY BINGHAMTON,DEPT MECH & IND ENGN,BINGHAMTON,NY 13902, USA. NR 13 TC 17 Z9 18 U1 0 U2 3 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0742-4787 J9 J TRIBOL-T ASME JI J. Tribol.-Trans. ASME PD JAN PY 1993 VL 115 IS 1 BP 88 EP 95 DI 10.1115/1.2920991 PG 8 WC Engineering, Mechanical SC Engineering GA KK632 UT WOS:A1993KK63200013 ER PT J AU ADAMCZYK, JJ CELESTINA, ML GREITZER, EM AF ADAMCZYK, JJ CELESTINA, ML GREITZER, EM TI THE ROLE OF TIP CLEARANCE IN HIGH-SPEED FAN STALL SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 36TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 03-06, 1991 CL ORLANDO, FL ID AXIAL-FLOW COMPRESSORS AB A numerical experiment has been carried out to define the near-stall casing endwall flow field of a high-speed fan rotor. The experiment used a simulation code incorporating a simple clearance model, whose calibration is presented. The results of the simulation show that the interaction of the tip leakage vortex and the in-passage shock plays a major role in determining the fan flow range. More specifically, the computations imply that it is the area increase of this vortex as it passes through the in-passage shock that is the source of the blockage associated with stall. In addition, for fans of this type, it is the clearance over the forward portion of the fan blade that controls the flow processes leading to stall. C1 SVERDRUP TECHNOL INC,LEWIS RES CTR GRP,CLEVELAND,OH 44135. MIT,CAMBRIDGE,MA 02139. RP ADAMCZYK, JJ (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 19 TC 44 Z9 60 U1 4 U2 11 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD JAN PY 1993 VL 115 IS 1 BP 28 EP 39 DI 10.1115/1.2929212 PG 12 WC Engineering, Mechanical SC Engineering GA KK634 UT WOS:A1993KK63400004 ER PT J AU BUFFUM, DH FLEETER, S AF BUFFUM, DH FLEETER, S TI WIND-TUNNEL WALL EFFECTS IN A LINEAR OSCILLATING CASCADE SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 36TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 03-06, 1991 CL ORLANDO, FL AB Experiments in a linear oscillating cascade reveal that the wind tunnel walls enclosing the airfoils have, in some cases, a detrimental effect on the oscillating cascade aerodynamics. In a subsonic flow field, biconvex airfoils are driven simultaneously in harmonic, torsion-mode oscillations for a range of interblade phase angle values. It is found that the cascade dynamic periodicity-the airfoil-to-airfoil variation in unsteady surface pressure-is good for some values of interblade phase angle but poor for others. Correlation of the unsteady pressure data with oscillating flat plate cascade predictions is generally good for conditions where the periodicity is good and poor where the periodicity is poor. Calculations based upon linearized unsteady aerodynamic theory indicate that pressure waves reflected from the wind tunnel walls are responsible for the cases where there is poor periodicity and poor correlation with the predictions. C1 PURDUE UNIV,SCH MECH ENGN,CTR THERMAL SCI & PROPULS,W LAFAYETTE,IN 47907. RP BUFFUM, DH (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 9 TC 9 Z9 11 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD JAN PY 1993 VL 115 IS 1 BP 147 EP 156 DI 10.1115/1.2929199 PG 10 WC Engineering, Mechanical SC Engineering GA KK634 UT WOS:A1993KK63400017 ER PT J AU KURKOV, AP MEHMED, O AF KURKOV, AP MEHMED, O TI OPTICAL MEASUREMENTS OF UNDUCTED FAN FLUTTER SO JOURNAL OF TURBOMACHINERY-TRANSACTIONS OF THE ASME LA English DT Article; Proceedings Paper CT 36TH INTERNATIONAL GAS TURBINE AND AEROENGINE CONGRESS AND EXPOSITION CY JUN 03-06, 1991 CL ORLANDO, FL AB The paper describes a nonintrusive optical method for measuring flutter vibrations in unducted fan or propeller rotors and provides detailed spectral results for two flutter modes of a scaled unducted fan. The measurements were obtained in a high-speed wind tunnel. A single-rotor and a dual-rotor counterrotating configuration of the model were tested; however, only the forward rotor of the counterrotating configuration fluttered. Conventional strain gages were used to obtain flutter frequency; optical data provided complete phase results and an indication of the flutter mode shape through the ratio of the leading- to trailing-edge flutter amplitudes near the blade tip. In the transonic regime the flutter exhibited some features that are usually associated with nonlinear vibrations. Experimental mode shape and frequencies were compared with calculated values that included centrifugal effects. RP KURKOV, AP (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0889-504X J9 J TURBOMACH JI J. Turbomach.-Trans. ASME PD JAN PY 1993 VL 115 IS 1 BP 189 EP 196 DI 10.1115/1.2929206 PG 8 WC Engineering, Mechanical SC Engineering GA KK634 UT WOS:A1993KK63400021 ER PT J AU DAVIDSON, MR HOFLUND, GB OUTLAW, RA AF DAVIDSON, MR HOFLUND, GB OUTLAW, RA TI FLUX MEASUREMENT OF A HYPERTHERMAL ATOMIC OXYGEN BEAM SO JOURNAL OF VACUUM SCIENCE & TECHNOLOGY A-VACUUM SURFACES AND FILMS LA English DT Note ID ELECTRON AB A method has been developed and is described for measuring the flux of a beam of hyperthermal oxygen atoms using a quadrupole mass spectrometer. The accuracy of this method has been assessed by adsorbing the O atom flux on a Au surface for a specified period of time and quantifying the adsorbed amount using ion scattering spectroscopy and by estimating the oxygen-atom flux from the electron stimulated desorption parameters used to produce the oxygen-atom beam. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. RP DAVIDSON, MR (reprint author), UNIV FLORIDA,DEPT CHEM ENGN,GAINESVILLE,FL 32611, USA. RI Davidson, Mark/C-1135-2009 NR 8 TC 7 Z9 7 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0734-2101 J9 J VAC SCI TECHNOL A JI J. Vac. Sci. Technol. A-Vac. Surf. Films PD JAN-FEB PY 1993 VL 11 IS 1 BP 264 EP 266 DI 10.1116/1.578714 PG 3 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA KH557 UT WOS:A1993KH55700038 ER PT J AU CANARIS, J AF CANARIS, J TI A VLSI ARCHITECTURE FOR THE REAL-TIME COMPUTATION OF DISCRETE TRIGONOMETRIC TRANSFORMS SO JOURNAL OF VLSI SIGNAL PROCESSING LA English DT Article DE DISCRETE COSINE TRANSFORM; DISCRETE TRIGONOMETRIC TRANSFORMS; VLSI ARCHITECTURE; GOERTZELS ALGORITHM AB The Discrete Trigonometric Transforms are defined as a class of transforms. An algorithm for calculating the Discrete Fourier Transform is extended to cover all members of the defined class. A VLSI architecture which provides for real time calculation of these transforms is presented. This architecture provides simple interconnections, identical processing elements and minimal control complexity. C1 NASA,SPACE ENGN RES CTR,ALBUQUERQUE,NM 87106. NR 19 TC 15 Z9 15 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0922-5773 J9 J VLSI SIGNAL PROC JI J. VLSI Signal Process. PD JAN PY 1993 VL 5 IS 1 BP 95 EP 104 DI 10.1007/BF01880275 PG 10 WC Computer Science, Information Systems; Engineering, Electrical & Electronic SC Computer Science; Engineering GA KT584 UT WOS:A1993KT58400009 ER PT B AU DOWNIE, JD AF DOWNIE, JD GP IEEE TI BACTERIORHODOPSIN SPATIAL LIGHT MODULATORS FOR OPTICAL-PROCESSING APPLICATIONS SO LEOS '93 CONFERENCE PROCEEDINGS: IEEE LASERS AND ELECTRO-OPTICS SOCIETY 1993 ANNUAL MEETING LA English DT Proceedings Paper CT 6th Annual Meeting of the IEEE Lasers-and-Electro-Optics-Society (LEOS 93) CY NOV 15-18, 1993 CL SAN JOSE CONVENT CTR, SAN JOSE, CA SP IEEE, LASERS & ELECTRO OPT SOC HO SAN JOSE CONVENT CTR C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-7803-1263-5 J9 IEEE LEOS ANN MTG PY 1993 BP 65 EP 66 PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA47C UT WOS:A1993BA47C00027 ER PT B AU GOORJIAN, PM TAFLOVE, A JOSEPH, RM AF GOORJIAN, PM TAFLOVE, A JOSEPH, RM GP IEEE TI NUMERICAL SIMULATIONS OF FEMTOSECOND TEMPORAL SOLITONS AND SPATIAL SOLITONS IN NONLINEAR OPTICS SO LEOS '93 CONFERENCE PROCEEDINGS: IEEE LASERS AND ELECTRO-OPTICS SOCIETY 1993 ANNUAL MEETING LA English DT Proceedings Paper CT 6th Annual Meeting of the IEEE Lasers-and-Electro-Optics-Society (LEOS 93) CY NOV 15-18, 1993 CL SAN JOSE CONVENT CTR, SAN JOSE, CA SP IEEE, LASERS & ELECTRO OPT SOC HO SAN JOSE CONVENT CTR C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-7803-1263-5 J9 IEEE LEOS ANN MTG PY 1993 BP 345 EP 346 PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA47C UT WOS:A1993BA47C00160 ER PT B AU LESH, JR AF LESH, JR GP IEEE TI LASER TRANSMITTER RECEIVER SYSTEMS FOR NASA OPTICAL COMMUNICATIONS APPLICATIONS IN PLANETARY MISSIONS SO LEOS '93 CONFERENCE PROCEEDINGS: IEEE LASERS AND ELECTRO-OPTICS SOCIETY 1993 ANNUAL MEETING LA English DT Proceedings Paper CT 6th Annual Meeting of the IEEE Lasers-and-Electro-Optics-Society (LEOS 93) CY NOV 15-18, 1993 CL SAN JOSE CONVENT CTR, SAN JOSE, CA SP IEEE, LASERS & ELECTRO OPT SOC HO SAN JOSE CONVENT CTR 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 0-7803-1263-5 J9 IEEE LEOS ANN MTG PY 1993 BP 363 EP 364 PG 2 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BA47C UT WOS:A1993BA47C00168 ER PT J AU PARMAR, DS SINGH, JJ AF PARMAR, DS SINGH, JJ TI GAS FLOW-FIELD INDUCED DIRECTOR ALIGNMENT IN POLYMER-DISPERSED LIQUID-CRYSTAL MICRODROPLETS DEPOSITED ON A GLASS SUBSTRATE SO LIQUID CRYSTALS LA English DT Article; Proceedings Paper CT 14TH INTERNATIONAL LIQUID CRYSTAL CONF CY JUN 21-26, 1992 CL PISA, ITALY AB Polymer dispersed liquid crystal thin films have been deposited on glass substrates by the processes of polymerization and solvent evaporation induced phase separation. The electron and the optical polarization microscopies of the films reveal that PDLC microdroplets formed during the process of phase separation near the top surface of the film remain exposed and respond to shear stress due to air or gas flow on the surface. Optical response of the film to an air flow-induced shear stress input on the free surface has been measured. Director orientation in the droplets changes with the applied shear stress leading to time varying transmitted light intensity. Director dynamics of the droplet for an applied step shear stress has been discussed from free energy considerations. Results on the measurement of light transmission as a function of the gas flow parameter unambiguously demonstrate the potential of these systems for use as boundary layer and gas flow sensors. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. OLD DOMINION UNIV,DEPT MECH ENGN & MECH,NORFOLK,VA 23529. NR 14 TC 2 Z9 2 U1 0 U2 1 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0267-8292 J9 LIQ CRYST JI Liq. Cryst. PY 1993 VL 14 IS 2 BP 361 EP 369 DI 10.1080/02678299308027651 PG 9 WC Chemistry, Multidisciplinary; Crystallography; Materials Science, Multidisciplinary SC Chemistry; Crystallography; Materials Science GA LM521 UT WOS:A1993LM52100011 ER PT B AU WAHLGREN, GM AF WAHLGREN, GM BE Sasselov, DD TI THE RV TAURI AND SRD VARIABLES SO LUMINOUS HIGH-LATITUDE STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT International Workshop on Luminous High-Latitude Stars CY MAY 28-30, 1992 CL HARVARD-SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA SP HARVARD SMITHSONIAN CTR ASTROPHYS HO HARVARD-SMITHSONIAN CTR ASTROPHYS C1 COMP SCI CORP,GHRS SCI TEAM,GSFC,GREENBELT,MD 20771. NR 0 TC 6 Z9 6 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 0-937707-64-3 J9 ASTR SOC P PY 1993 VL 45 BP 270 EP 284 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94U UT WOS:A1993BZ94U00031 ER PT B AU KOSTER, RD SUAREZ, MJ AF KOSTER, RD SUAREZ, MJ BE Wilkinson, WB TI CLIMATE VARIABILITY STUDIES WITH A COUPLED LAND ATMOSPHERE MODEL SO MACROSCALE MODELLING OF THE HYDROSPHERE SE IAHS PUBLICATIONS LA English DT Proceedings Paper CT International Symposium on Macroscale Modelling of the Hydrosphere CY JUL 21, 1993 CL YOKOHAMA, JAPAN SP INT ASSOC HYDROL SCI, UNESCO, WORLD METEOROL ORG C1 NASA,GODDARD SPACE FLIGHT CTR,HYDROL SCI BRANCH,HYDROSPHER PROC LAB,GREENBELT,MD 20771. RI Koster, Randal/F-5881-2012 OI Koster, Randal/0000-0001-6418-6383 NR 0 TC 0 Z9 0 U1 0 U2 0 PU INT ASSOC HYDROLOGICAL SCIENCES PI WALLINGFORD PA INST OF HYDROLOGY, WALLINGFORD, ENGLAND OX10 8BB BN 0-947571-63-9 J9 IAHS-AISH P PY 1993 IS 214 BP 173 EP 181 PG 9 WC Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Water Resources SC Geology; Meteorology & Atmospheric Sciences; Water Resources GA BB28H UT WOS:A1993BB28H00017 ER PT B AU JONES, HP AF JONES, HP BE Zirin, H Ai, GX Wang, HM TI SPECTROMETER-BASED MAGNETOGRAPHS SO MAGNETIC AND VELOCITY FIELDS OF SOLAR ACTIVE REGIONS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 141: The Magnetic and Velocity Fields of Solar Active Regions CY SEP 06-12, 1992 CL BEIJING, PEOPLES R CHINA SP IAU, ASTRON SOC PACIFIC, NATL SCI FDN CHINA, CHINESE ACAD SCI C1 NSO,NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,SW SOLAR STN,TUCSON,AZ 85726. 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 0-937707-65-1 J9 ASTR SOC P PY 1993 VL 46 BP 156 EP 165 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA08E UT WOS:A1993BA08E00033 ER PT B AU BROSIUS, JW DAVILA, JM JONES, HP THOMPSON, WT THOMAS, RJ HOLMAN, GD WHITE, SM GOPALSWAMY, N KUNDU, MR AF BROSIUS, JW DAVILA, JM JONES, HP THOMPSON, WT THOMAS, RJ HOLMAN, GD WHITE, SM GOPALSWAMY, N KUNDU, MR BE Zirin, H Ai, GX Wang, HM TI ANALYSIS OF EUV, MICROWAVE, AND MAGNETIC-FIELD OBSERVATIONS OF SOLAR PLAGE SO MAGNETIC AND VELOCITY FIELDS OF SOLAR ACTIVE REGIONS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 141: The Magnetic and Velocity Fields of Solar Active Regions CY SEP 06-12, 1992 CL BEIJING, PEOPLES R CHINA SP IAU, ASTRON SOC PACIFIC, NATL SCI FDN CHINA, CHINESE ACAD SCI C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RI Holman, Gordon/C-9548-2012; Gopalswamy, Nat/D-3659-2012; Thompson, William/D-7376-2012; OI Gopalswamy, Nat/0000-0001-5894-9954 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 0-937707-65-1 J9 ASTR SOC P PY 1993 VL 46 BP 291 EP 294 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BA08E UT WOS:A1993BA08E00060 ER PT J AU SALOMONSON, VV AF SALOMONSON, VV BE Falconer, A TI GLOBAL RESOURCES AND MISSION TO PLANET EARTH SO MAPPING TOMORROW'S RESOURCES SE NATURAL RESOURCES AND ENVIRONMENTAL ISSUES (NREI) LA English DT Proceedings Paper CT Symposium on Mapping Tomorrows Resources CY APR 23-24, 1992 CL UTAH STATE UNIV, ECCLES CONF CTR, LOGAN, UT SP UTAH STATE UNIV, COLL NAT RESOURCES, S J & JESSIE E QUINNEY FDN, USDA, SOIL CONSERVAT SERV, US FISH & WILDLIFE SERV, UTAH COOPERAT RES UNIT, USDA, FOREST SERV, UTAH GEOG ALLIANCE HO UTAH STATE UNIV, ECCLES CONF CTR C1 NASA,GODDARD SPACE FLIGHT CTR,EARTH SCI DIRECTORATE,GREENBELT,MD 20771. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UTAH STATE UNIV, COLL NATURAL RESOURCES PI LOGAN PA S J & JESSIE E QUINNEY NATURAL RESOURCES RESEARCH LIBRARY, LOGAN, UT 84322-5200 SN 1069-5370 J9 NAT RESOUR ENV ISS PY 1993 VL 2 BP 7 EP 15 PG 9 WC Computer Science, Interdisciplinary Applications; Environmental Sciences; Environmental Studies; Geography; Geosciences, Multidisciplinary; Remote Sensing SC Computer Science; Environmental Sciences & Ecology; Geography; Geology; Remote Sensing GA BA20L UT WOS:A1993BA20L00002 ER PT J AU HANSON, PJ EVANS, DW COLBY, DR ZDANOWICZ, VS AF HANSON, PJ EVANS, DW COLBY, DR ZDANOWICZ, VS TI ASSESSMENT OF ELEMENTAL CONTAMINATION IN ESTUARINE AND COASTAL ENVIRONMENTS BASED ON GEOCHEMICAL AND STATISTICAL MODELING OF SEDIMENTS SO MARINE ENVIRONMENTAL RESEARCH LA English DT Article ID WATER-QUALITY DATA; METAL CONCENTRATIONS; MARINE-SEDIMENTS; RIVER ESTUARY; HEAVY-METALS; POLLUTION; HISTORY AB Sediment of variable mineralogical, textural and metal contaminant composition was collected from 38 estuaries along the Atlantic and Gulf of Mexico coasts of the United States and analyzed for total Al, Ag, As, Cd, Cr, Cu, Fe, Hg, Mn, Ni, Pb, Se, Si, Sn, Tl and Zn concentrations. Based on observed covariation of elements at 15 estuaries remote from contaminant inputs, linear regressions of metals on Al were used to model the metal content in baseline sediments. A geochemical model for the covariation was developed, verified and used to guide the statistical modelling approach. Comparison of metal concentrations predicted by the models with those occurring in uncontaminated geological materials suggests that baseline relationships are valid for the entire region sampled Using these baseline relationships, sediment metal concentrations can be partitioned into natural and anthropogenic fractions. Models improve the comparability of metal levels in sediments by correcting for variable background concentrations that, if left uncorrected, only serve to increase total data variability and reduce detection of spatial and temporal differences. Examples of the application of baseline models to pollution studies are provided. A continuing decline in Pb concentrations in Mississippi River delta sediments is observed consistent with the declining use of Pb additives in gasoline since 1970. Major spatial trends in contaminant metals in sediments along the Atlantic and Gulf of Mexico coasts are noted. C1 NOAA,NATL MARINE FISHERIES SERV,NE FISHERIES CTR,SANDY HOOK LAB,HIGHLANDS,NJ 07732. RP HANSON, PJ (reprint author), NOAA,NATL MARINE FISHERIES SERV,SE FISHERIES SCI CTR,BEAUFORT LAB,BEAUFORT,NC 28516, USA. NR 41 TC 118 Z9 123 U1 0 U2 15 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0141-1136 J9 MAR ENVIRON RES JI Mar. Environ. Res. PY 1993 VL 36 IS 4 BP 237 EP 266 DI 10.1016/0141-1136(93)90091-D PG 30 WC Environmental Sciences; Marine & Freshwater Biology; Toxicology SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Toxicology GA LQ943 UT WOS:A1993LQ94300003 ER PT J AU LIN, HH TOWNSEND, DP OSWALD, FB AF LIN, HH TOWNSEND, DP OSWALD, FB TI PREDICTION OF GEAR DYNAMICS USING FAST FOURIER-TRANSFORM OF STATIC TRANSMISSION ERROR SO MECHANICS OF STRUCTURES AND MACHINES LA English DT Article AB An analytical computer simulation procedure for dynamic modeling of low-contact-ratio spur gear systems is presented. The procedure computes the gear static transmission error and uses a Fast Fourier Transform (FFT) to generate its frequency spectrum at various tooth profile modifications. The dynamic loading response of an unmodified (perfect involute) gear pair is compared with that of gears with profile modifications. Correlations are found between several profile modifications and the resulting dynamic loads. An effective error, obtained from frequency domain analysis of the gear's static transmission error, gives a good estimate of gear dynamic loading. Design curves generated by dynamic simulation at several profile modifications are given for gear systems operated under different applied loads. Optimum profile modifications can then be determined from the design curves, to yield a minimum dynamic effect for a gear system. This provides an essential tool for improved gear design. C1 NASA,LEWIS RES CTR,MECH SYST TECHNOL BRANCH,CLEVELAND,OH 44135. RP LIN, HH (reprint author), MEMPHIS STATE UNIV,DEPT MECH ENGN,MEMPHIS,TN 38152, USA. NR 20 TC 9 Z9 9 U1 1 U2 3 PU MARCEL DEKKER INC PI NEW YORK PA 270 MADISON AVE, NEW YORK, NY 10016 SN 0890-5452 J9 MECH STRUCT MACH JI Mech. Struct. Mach. PY 1993 VL 21 IS 2 BP 237 EP 260 DI 10.1080/08905459308905188 PG 24 WC Mechanics SC Mechanics GA LD117 UT WOS:A1993LD11700005 ER PT J AU ELLIS, DL MCDANELS, DL AF ELLIS, DL MCDANELS, DL TI THERMAL-CONDUCTIVITY AND THERMAL-EXPANSION OF GRAPHITE FIBER-REINFORCED COPPER MATRIX COMPOSITES SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT SYMP ON HIGH PERFORMANCE COPPER-BASE MATERIALS, AT THE 1991 ANNUAL MEETING OF THE MINERALS, METALS AND MATERIALS SOC CY FEB 17-21, 1991 CL NEW ORLEANS, LA SP MINERALS MET & MAT SOC AB The high specific conductivity of graphite fiber/copper matrix (Gr/Cu) composites offers great potential for high heat flux structures operating at elevated temperatures. To determine the feasibility of applying Gr/Cu composites to high heat flux structures, composite plates were fabricated using unidirectional and cross-plied pitch-based P-100 graphite fibers in a pure copper matrix. Thermal conductivity of the composites was measured from room temperature to 1073 K, and thermal expansion was measured from room temperature to 1050 K. The longitudinal thermal conductivity, parallel to the fiber direction, was comparable to pure copper. The transverse thermal conductivity. normal to the fiber direction, was less than that of pure copper and decreased with increasing fiber content. The longitudinal thermal expansion decreased with increasing fiber content. The transverse thermal expansion was greater than pure copper and nearly independent of fiber content. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP ELLIS, DL (reprint author), CASE WESTERN RESERVE UNIV,CLEVELAND,OH 44106, USA. NR 19 TC 35 Z9 35 U1 1 U2 14 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD JAN PY 1993 VL 24 IS 1 BP 43 EP 52 DI 10.1007/BF02669601 PG 10 WC Materials Science, Multidisciplinary SC Materials Science GA KJ806 UT WOS:A1993KJ80600007 ER PT J AU KHADKIKAR, PS LOCCI, IE VEDULA, K MICHAL, GM AF KHADKIKAR, PS LOCCI, IE VEDULA, K MICHAL, GM TI TRANSFORMATION TO NI5AL3 IN A 63.0 AT. PCT NI-AL ALLOY SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID MARTENSITIC-TRANSFORMATION; ELECTRON-DIFFRACTION; PREMARTENSITIC MICROSTRUCTURES; TWEED MICROSTRUCTURES; BETA'-NIAL ALLOYS; BETA-1 ALLOY; PHASE; ANOMALIES; SYSTEM AB Microstructures in a 63 at. pct Ni-Al alloy, produced by a powder metallurgy process, have been investigated in detail in as-quenched and aged (823 to 923 K) conditions. The parent L1(0) martensite plus B2 NiAl microstructure in the as-quenched state transformed nearly completely to the orthorhombic Ni5Al3 phase upon aging at 823 K for 720 hours. The volume fraction of Ni5Al3 formed as a function of aging time at 823 K was observed to obey cellular reaction kinetic behavior. The specimens aged at 823 K for short times indicated that nucleation of the Ni5Al3 phase occurred preferentially at grain boundaries. Transmission electron microscopy (TEM) observations of short-time aged specimens revealed a complex microstructure consisting of short-range ordered domains of Ni2Al in a matrix of 7R martensite, in addition to new variants of 3R martensite and Ni5Al3. Aging at 873 and 923 K for 720 hours produced a stable two-phase microstructure consisting of NiAl and Ni5Al3. A quantitative phase analysis was carried out to calculate the (NiAl + Ni5Al3)/Ni5Al3 phase boundary locations. The measured lattice parameters of Ni5Al3 formed at 823, 873, and 923 K indicated an increase in tetragonality of the phase with increasing nickel content. C1 CASE WESTERN RESERVE UNIV,DEPT MAT SCI & ENGN,CLEVELAND,OH 44106. NASA,LEWIS RES CTR,CLEVELAND,OH 44135. IOWA STATE UNIV SCI & TECHNOL,AMES,IA 50011. NR 29 TC 62 Z9 66 U1 1 U2 4 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD JAN PY 1993 VL 24 IS 1 BP 83 EP 94 DI 10.1007/BF02669606 PG 12 WC Materials Science, Multidisciplinary SC Materials Science GA KJ806 UT WOS:A1993KJ80600012 ER PT J AU YUN, HM AF YUN, HM TI PRELIMINARY EVALUATION OF TENSILE AND STRESS-RUPTURE BEHAVIOR OF W+24 AT PCT RE+0.4 AT PCT HFC WIRE SO METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article AB The tensile properties of hafnium carbide-dispersed tungsten-rhenium alloy wire, W + 24 at. pct Re + 0.4 at. pct HfC (W24ReHfC), were studied froin liquid nitrogen temperature (LN2) to 1750 K and its stress-rupture behavior determined from 1144 to 1500 K. These results are compared to previous data on W + 4 at. pct Re + 0.4 at. pct HfC (W4ReHfC) and W + 0.4 at. pct HfC (WHfC) wire.[5] The room-temperature (RT) tensile strength of the W24ReHfC wire was about 3250 MPa and higher than that of the W4ReHfC (3160 MPa) and WHfC (2250 MPa) wires. The RT ductility of the W24ReHfC wire was quite high with a 50 pct reduction of area, whereas the W4ReHfC wire and the WHfC wire had RT ductilities of 28 and 2 pct, respectively. At temperatures of 1144 to 1366 K, the W24ReHfC wire had tensile strengths favorably comparable to the W4ReHfC and WHfC wires. However. above 1366 K, the W4ReHfC wire had both a greater tensile strength and stress-rupture strength than the W24ReHfC wire. The main contributions to the strengthening of the W24ReHfC wire were the fine and elongated fibrous grain microstructures and the dispersion of the HfC particles in the W-Re matrix. These properties suggested that the W24ReHfC wires hold promise as potential fiber reinforcements in composites from RT to about 1350 K. RP YUN, HM (reprint author), CLEVELAND STATE UNIV,NASA,LEWIS RES CTR,CLEVELAND,OH 44115, USA. NR 14 TC 1 Z9 1 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0360-2133 J9 METALL TRANS A PD JAN PY 1993 VL 24 IS 1 BP 209 EP 214 DI 10.1007/BF02669617 PG 6 WC Materials Science, Multidisciplinary SC Materials Science GA KJ806 UT WOS:A1993KJ80600023 ER PT J AU SEKANINA, Z AF SEKANINA, Z BE Stohl, J Williams, IP TI PHYSICAL INTERPRETATION FOR DISCONTINUOUS ORBITAL ANOMALIES OF PERIODIC COMETS SO METEOROIDS AND THEIR PARENT BODIES LA English DT Proceedings Paper CT International Astronomical Symposium on Meteoroids and Their Parent Bodies CY JUL 06-12, 1992 CL SMOLENICE, SLOVAKIA SP SLOVAK ACAD SCI, ASTRON INST C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SLOVAK ACAD SCIENCES ASTRONOMICAL INST PI TATRANSKA LOMNICA PA CS-059 60 TATRANSKA LOMNICA, CZECHOSLOVAKIA PY 1993 BP 135 EP 139 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ54K UT WOS:A1993BZ54K00023 ER PT J AU HARRIS, AW AF HARRIS, AW BE Stohl, J Williams, IP TI CORVID METEOROIDS ARE NOT EJECTA FROM THE GIORDANO-BRUNO IMPACT SO METEOROIDS AND THEIR PARENT BODIES LA English DT Proceedings Paper CT International Astronomical Symposium on Meteoroids and Their Parent Bodies CY JUL 06-12, 1992 CL SMOLENICE, SLOVAKIA SP SLOVAK ACAD SCI, ASTRON INST C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SLOVAK ACAD SCIENCES ASTRONOMICAL INST PI TATRANSKA LOMNICA PA CS-059 60 TATRANSKA LOMNICA, CZECHOSLOVAKIA PY 1993 BP 371 EP 371 PG 1 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ54K UT WOS:A1993BZ54K00068 ER PT J AU SIMPSON, J KEENAN, TD FERRIER, B SIMPSON, RH HOLLAND, GJ AF SIMPSON, J KEENAN, TD FERRIER, B SIMPSON, RH HOLLAND, GJ TI CUMULUS MERGERS IN THE MARITIME CONTINENT REGION SO METEOROLOGY AND ATMOSPHERIC PHYSICS LA English DT Article ID CIRRUS CLOUDS; MODEL; THUNDERSTORMS; SIMULATIONS AB We examine a family of tall (up to 20 km) cumulonimbus complexes that develop almost daily over an adjacent pair of flat islands in the Maritime Continent region north of Darwin, Australia, and that are known locally as ''Hectors''. Nine cases observed by a rawinsonde network, surface observations (including radiation and soil measurements), the TRMM/TOGA radar, and one day of aircraft photography are used to analyse the development, rainfall, surface energy budgets, and vertical structure of these convective systems. The systems undergo convective merging which is similar to that observed in previous Florida studies and is multiplicative in terms of rainfall. About 90% of the total rainfall comes from the merged systems, which comprise less than 10% of convective systems, and this has implications for the manner in which tropical rainfall is parameterised in larger-scale numerical models. By comparison to the West Indies, GATE, and Florida, the Hector environment contains a weaker basic flow, with less vertical shear. The main thermodynamic difference is that the Darwin area has an unstable upper troposphere and very high tropopause. Numerical modelling results support earlier observations of updraughts in excess of 30 ms-1 in this region, but show that only modest convective drafts are experienced below the freezing level (5 km). The surface fluxes over the islands are estimated from a Monash University study to be mainly in latent form from evapotranspiration, with a Bowen ratio only slightly larger than that commonly observed over oceans. These surface fluxes are crucial to the development of a suitable mixed layer to support deep convection. The flux estimates agree with the observed changes below the cloud base and provide sufficient information for calculations of the bounds on precipitation efficiency. Of particular interest are the observations of Hector development on a day when the islands were under a dense cirrus overcast. We find that the islands still provide sufficient net sensible and latent heat fluxes to initiate convection. C1 BUR METEOROL,RES CTR,MELBOURNE,AUSTRALIA. NASA,GODDARD SPACE FLIGHT CTR,USRA,GREENBELT,MD 20771. SIMPSON WEATHER ASSOCIATES,CHARLOTTESVILLE,VA. RP SIMPSON, J (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771, USA. NR 41 TC 62 Z9 63 U1 0 U2 3 PU SPRINGER-VERLAG WIEN PI VIENNA PA SACHSENPLATZ 4-6, PO BOX 89, A-1201 VIENNA, AUSTRIA SN 0177-7971 J9 METEOROL ATMOS PHYS JI Meteorol. Atmos. Phys. PY 1993 VL 51 IS 1-2 BP 73 EP 99 DI 10.1007/BF01080881 PG 27 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KV768 UT WOS:A1993KV76800005 ER PT J AU CARON, DA SANDERS, RW LIM, EL MARRASE, C AMARAL, LA WHITNEY, S AOKI, RB PORTER, KG AF CARON, DA SANDERS, RW LIM, EL MARRASE, C AMARAL, LA WHITNEY, S AOKI, RB PORTER, KG TI LIGHT-DEPENDENT PHAGOTROPHY IN THE FRESH-WATER MIXOTROPHIC CHRYSOPHYTE DINOBRYON-CYLINDRICUM SO MICROBIAL ECOLOGY LA English DT Article ID RED TIDE CHRYSOPHYCEAE; POTERIOOCHROMONAS-MALHAMENSIS; UROGLENA-AMERICANA; BACTERIA; GROWTH; NITROGEN; RATES; COMMUNITY; CARBON AB The mixotrophic (bacterivorous), freshwater chrysophyte Dinobryon cylindricum was cultured under a variety of light regimes and in bacterized and axenic cultures to investigate the role of phototrophy and phagotrophy for the growth of this alga. D. cylindricum was found to be an obligate phototroph. The alga was unable to survive in continuous darkness even when cultures were supplemented with high concentrations of bacteria, and bacterivory ceased in cultures placed in the dark for a period longer than one day. Axenic growth of the alga was poor even in an optimal light regime. Live bacteria were required for sustained, vigorous growth of the alga in the light. Carbon (C), nitrogen (N), and phosphorus (P) budgets determined for the alga during growth in bacterized cultures indicated that bacterial biomass ingested by the alga may have contributed up to 25% of the organic carbon budget of the alga. Photosynthesis was the source of most (greater-than-or-equal-to 75%) of the organic carbon of the alga. D. cylindricum populations survived but did not grow when cultured in a continuous low light intensity (30 muE m-2 sec-1), or in a light intensity of 150 muE M-2 sec-1 for only two hours each day. Net efficiency of incorporation of bacterial C, N, and P into algal biomass under these two conditions was zero (i.e., no net algal population growth). We conclude that the primary function of bacterivorous behavior in D. cylindricum may be to provide essential growth factor(s) or major nutrients for photosynthetic growth, or to allow for the survival of individuals during periods of very low light intensity or short photoperiod. C1 ACAD NAT SCI PHILADELPHIA,DIV ENVIRONM RES,PHILADELPHIA,PA 19103. NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. UNIV GEORGIA,DEPT ZOOL,ATHENS,GA 30602. INST CIENCIES MAR,E-08003 BARCELONA,SPAIN. RP CARON, DA (reprint author), WOODS HOLE OCEANOG INST,DEPT BIOL,WOODS HOLE,MA 02543, USA. RI Sanders, Robert/C-1116-2011; Marrase, Celia/I-1166-2015 OI Sanders, Robert/0000-0001-7264-1059; Marrase, Celia/0000-0002-5097-4829 NR 38 TC 107 Z9 111 U1 0 U2 23 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0095-3628 J9 MICROBIAL ECOL JI Microb. Ecol. PD JAN-FEB PY 1993 VL 25 IS 1 BP 93 EP 111 PG 19 WC Ecology; Marine & Freshwater Biology; Microbiology SC Environmental Sciences & Ecology; Marine & Freshwater Biology; Microbiology GA KM531 UT WOS:A1993KM53100007 PM 24189708 ER PT J AU PARMAR, DS SINGH, JJ AF PARMAR, DS SINGH, JJ TI SHEAR-INDUCED SURFACE ALIGNMENT OF POLYMER-DISPERSED LIQUID-CRYSTAL MICRODROPLETS ON THE BOUNDARY-LAYER SO MOLECULAR CRYSTALS AND LIQUID CRYSTALS LA English DT Article ID LIGHT-SCATTERING AB Polymer dispersed liquid crystal thin films have been deposited on a glass substrate, utilizing the processes of polymerization and solvent evaporation induced phase separation. Liquid crystal microdroplets trapped on the upper surface of the thin film respond to the shear stress due to air or gas flow on the surface layer. Response to an applied step shear stress input on the surface layer has been measured by measuring the time response of the transmitted light intensity. Initial results on the measurements of the light transmission as a function of the air flow differential pressure indicate that these systems offer features suitable for boundary layer and gas flow sensors. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 12 TC 4 Z9 4 U1 0 U2 2 PU GORDON BREACH SCI PUBL LTD PI READING PA C/O STBS LTD PO BOX 90, READING, BERKS, ENGLAND RG1 8JL SN 0140-6566 J9 MOL CRYST LIQ CRYST PY 1993 VL 225 BP 183 EP & DI 10.1080/10587259308036228 PG 0 WC Crystallography SC Crystallography GA LT046 UT WOS:A1993LT04600017 ER PT J AU GEORGE, IM NANDRA, K FABIAN, AC TURNER, TJ DONE, C DAY, CSR AF GEORGE, IM NANDRA, K FABIAN, AC TURNER, TJ DONE, C DAY, CSR TI THE BROAD-BAND X-RAY SPECTRAL VARIABILITY OF MRK-841 SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE GALAXIES - INDIVIDUAL - MRK-841; GALAXIES - SEYFERT; X-RAYS - GALAXIES ID ACTIVE GALACTIC NUCLEI; BRIGHT QUASAR SURVEY; SEYFERT-GALAXIES; COLD MATTER; IRON LINE; REFLECTION; GINGA; EMISSION; EXCESS; REGION AB The results of a detailed spectral analysis of four X-ray observations of the luminous Seyfert 1.5 galaxy Mrk 841, performed using the EXOSAT and Ginga satellites over the period 1984 June to 1990 July, are reported. Preliminary results from a short ROSAT PSPC observation of Mrk 841 in 1990 July are also presented. Variability is apparent in both the soft (0.1-1.0 keV) and medium (1-20 keV) energy bands. Above 1 keV, the spectra are adequately modelled by a power law with a strong emission line of equivalent width approximately 450 eV. The energy of the line (approximately 6.4 keV) is indicative of K-shell fluorescence from neutral iron, leading to the interpretation that the line arises via X-ray illumination of cold material surrounding the source. In addition to the flux variability, the continuum shape also changes in a dramatic fashion, with variations in the apparent photon index DELTAGAMMA approximately 0.6. The large equivalent width of the emission line clearly indicates a strongly enhanced reflection component in this source, compared to other Seyferts observed with Ginga. The spectral changes are interpreted in terms of a variable power-law continuum superimposed on a flatter reflection component. For one Ginga observation, the reflected flux appears to dominate the medium-energy X-ray emission, resulting in an unusually flat slope (GAMMA approximately 1.0). The soft X-ray excess reported by Arnaud et al. is found to be highly variable by a factor approximately 10. These variations are not correlated with the hard flux, but it seems likely that the soft component arises via reprocessing of the hard X-rays. We find no evidence for intrinsic absorption, with the equivalent hydrogen column density constrained to be less than or similar to few x 10(20) cm-2. The implications of these results for physical models of the emission regions in this and other X-ray bright Seyferts are briefly discussed. C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. UNIV LEICESTER,DEPT PHYS & ASTRON,X-RAY ASTRON GRP,LEICESTER LE1 7RH,ENGLAND. INST SPACE & ASTRONOM SCI,SAGAMIHARA,KANAGAWA 229,JAPAN. RP GEORGE, IM (reprint author), UNIV CAMBRIDGE,INST ASTRON,MADINGLEY RD,CAMBRIDGE CB3 0HA,ENGLAND. RI done, chris/D-4605-2016 OI done, chris/0000-0002-1065-7239 NR 48 TC 24 Z9 24 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JAN 1 PY 1993 VL 260 IS 1 BP 111 EP 120 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KE346 UT WOS:A1993KE34600013 ER PT J AU WU, KW WICKRAMASINGHE, DT AF WU, KW WICKRAMASINGHE, DT TI THE MAGNETIC-FIELD CONFIGURATIONS OF AM HERCULIS BINARIES SO MONTHLY NOTICES OF THE ROYAL ASTRONOMICAL SOCIETY LA English DT Article DE ACCRETION, ACCRETION DISKS; BINARIES - CLOSE; STARS - MAGNETIC FIELDS; NOVAE, CATACLYSMIC VARIABLES; WHITE DWARFS ID INHOMOGENEOUS ACCRETION COLUMNS; CYCLOTRON EMISSION; POLARIZED RADIATION; UBVRI POLARIMETRY; HOT PLASMAS; VV-PUPPIS; SYSTEMS; FEATURES; SPECTRA; STATES AB We have considered equilibrium configurations of a white dwarf and a red dwarf companion in an AM Herculis type binary system where the red dwarf is assumed to have an intrinsic centred dipole field, and the white dwarf an offset dipole or a centred dipole plus a quadrupole field, and the interaction is purely magnetic. The restoring torque, due to the system being perturbed from its stable equilibrium configuration, is compared with the accretion torque. The results are used to show that the observed alignment of the main cyclotron emission region relative to the red star can be explained quite simply by these models without having to invoke gravitational torques. We also provide a possible explanation of the observation that the more strongly accreting pole has the weaker field strength in the few systems where fields have been determined at both poles. C1 AUSTRALIAN NATL UNIV,DEPT MATH,CANBERRA,ACT 2601,AUSTRALIA. RP WU, KW (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,ES-65,HUNTSVILLE,AL 35812, USA. NR 36 TC 33 Z9 33 U1 0 U2 0 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0035-8711 J9 MON NOT R ASTRON SOC JI Mon. Not. Roy. Astron. Soc. PD JAN 1 PY 1993 VL 260 IS 1 BP 141 EP 148 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KE346 UT WOS:A1993KE34600016 ER PT J AU BATES, JR MOORTHI, S HIGGINS, RW AF BATES, JR MOORTHI, S HIGGINS, RW TI A GLOBAL MULTILEVEL ATMOSPHERIC MODEL USING A VECTOR SEMI-LAGRANGIAN FINITE-DIFFERENCE SCHEME .1. ADIABATIC FORMULATION SO MONTHLY WEATHER REVIEW LA English DT Article ID SHALLOW-WATER EQUATIONS; PRIMITIVE-EQUATIONS; MULTIPLY-UPSTREAM; ADVECTIVE SCHEMES; SPECTRAL MODELS; INTEGRATION; SPHERE AB An adiabatic global multilevel primitive equation model using a two time-level, semi-Lagrangian semi-implicit finite-difference integration scheme is presented. A Lorenz grid is used for the vertical discretization and a C grid for the horizontal discretization. The momentum equation is discretized in vector form, thus avoiding problems near the poles. The 3D model equations are reduced by a linear transformation to a set of 2D elliptic equations, whose solution is found by means of an efficient direct solver. The model (with minimal physics) is integrated for 10 days starting from an initialized state derived from real data. A resolution of 16 levels in the vertical is used, with various horizontal resolutions. The model is found to be stable and efficient, and to give realistic output fields. Integrations with time steps of 10 min, 30 min, and 1 h are compared, and the differences are found to be acceptable. RP NASA, GODDARD SPACE FLIGHT CTR,DATA ASSIMILAT OFF, ATMOSPHERES LAB,CODE 9103, BLDG 21, GREENBELT, MD 20771 USA. NR 35 TC 65 Z9 66 U1 0 U2 2 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 USA SN 0027-0644 EI 1520-0493 J9 MON WEATHER REV JI Mon. Weather Rev. PD JAN PY 1993 VL 121 IS 1 BP 244 EP 263 DI 10.1175/1520-0493(1993)121<0244:AGMAMU>2.0.CO;2 PG 20 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KH782 UT WOS:A1993KH78200016 ER PT J AU FOXRABINOVITZ, MS LINDZEN, RS AF FOXRABINOVITZ, MS LINDZEN, RS TI NUMERICAL EXPERIMENTS ON CONSISTENT HORIZONTAL AND VERTICAL RESOLUTION FOR ATMOSPHERIC MODELS AND OBSERVING SYSTEMS SO MONTHLY WEATHER REVIEW LA English DT Article ID WEATHER PREDICTION AB Simple numerical experiments are performed in order to determine the effects of inconsistent combinations of horizontal and vertical resolution in both atmospheric models and observing systems. In both cases, we find that inconsistent spatial resolution is associated with enhanced noise generation. A rather fine horizontal resolution in a satellite-data observing system seems to be excessive when combined with the usually available relatively coarse vertical resolution. Using horizontal filters of different strengths, adjusted in such a way as to render the effective horizontal resolution more consistent with vertical resolution for the observing system, may result in improvement of the analysis accuracy. The increase of vertical resolution for a satellite-data observing system is. however, desirable. For the conventional-data observing system with better vertically resolved data, the results are different in that little or no horizontal filtering is needed to make spatial resolution more consistent for the system, The obtained experimental estimates of consistent vertical and effective horizontal resolution are in a general agreement with consistent resolution estimates previously derived theoretically by the authors. C1 MIT,CTR METEOROL & PHYS OCEANOG,CAMBRIDGE,MA 02139. RP FOXRABINOVITZ, MS (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB,CODE 9103,GREENBELT,MD 20771, USA. NR 18 TC 7 Z9 7 U1 1 U2 4 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD JAN PY 1993 VL 121 IS 1 BP 264 EP 271 DI 10.1175/1520-0493(1993)121<0264:NEOCHA>2.0.CO;2 PG 8 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KH782 UT WOS:A1993KH78200017 ER PT J AU MOORTHI, S HIGGINS, RW AF MOORTHI, S HIGGINS, RW TI APPLICATION OF FAST FOURIER-TRANSFORMS TO THE DIRECT SOLUTION OF A CLASS OF 2-DIMENSIONAL SEPARABLE ELLIPTIC-EQUATIONS ON THE SPHERE SO MONTHLY WEATHER REVIEW LA English DT Article ID SEMI-LAGRANGIAN INTEGRATION; SHALLOW-WATER EQUATIONS; SCHEME; MODEL AB An efficient, direct, second-order solver for the discrete solution of a class of two-dimensional separable elliptic equations on the sphere (which generally arise in implicit and semi-implicit atmospheric models) is presented. The method involves a Fourier transformation in longitude and a direct solution of the resulting coupled second-order finite-difference equations in latitude. The solver is made efficient by vectorizing over longitudinal wave-number and by using a vectorized fast Fourier transform routine. It is evaluated using a prescribed solution method and compared with a multigrid solver and the standard direct solver from FISHPAK. RP MOORTHI, S (reprint author), NASA, GODDARD SPACE FLIGHT CTR,ATMOSPHERES LAB, UNIV SPACE RES ASSOC,BLDG 21, RM 249B, CODE 9103, GREENBELT, MD 20771 USA. NR 25 TC 15 Z9 15 U1 0 U2 3 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108-3693 SN 0027-0644 J9 MON WEATHER REV JI Mon. Weather Rev. PD JAN PY 1993 VL 121 IS 1 BP 290 EP 296 DI 10.1175/1520-0493(1993)121<0290:AOFFTT>2.0.CO;2 PG 7 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA KH782 UT WOS:A1993KH78200019 ER PT S AU PELLIONISZ, AJ RAMOS, CF AF PELLIONISZ, AJ RAMOS, CF BE Allum, JHJ Alummecklenburg, DJ Harris, FP Probst, R TI GEOMETRICAL APPROACH TO NEURAL-NET CONTROL OF MOVEMENTS AND POSTURE SO NATURAL AND ARTIFICIAL CONTROL OF HEARING AND BALANCE SE PROGRESS IN BRAIN RESEARCH LA English DT Proceedings Paper CT SYMP ON NATURAL AND ARTIFICIAL CONTROL OF HEARING AND BALANCE, IN HONOR OF PROFESSOR CARL RUDOLF PFALTZ CY SEP 04-07, 1991 CL BASEL, SWITZERLAND SP BASEL CANTONAL BANK, BOEHRINGER INGELHEIM BASEL, COCHLEAR BASEL, CONTACT GRP RES BASEL, DEPT EDUC CANTON AARGAU, DEPT EDUC CANTON BASEL LAND, DUPLAR, HOECHST PHARMA BASEL, INGENO DATA, JANSSEN PHARM DE MOTOR CONTROL; GEOMETRY; SENSORIMOTOR; MODELING; COMPUTER SIMULATION; POSTURE; NEUROCOMPUTERS; FUNCTIONAL NEUROMUSCULAR STIMULATION RP PELLIONISZ, AJ (reprint author), NASA,AMES RES CTR,242-3,MOFFETT FIELD,CA 94035, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA AMSTERDAM SN 0079-6123 BN 0-444-81252-0 J9 PROG BRAIN RES PY 1993 VL 97 BP 245 EP 256 PG 12 WC Acoustics; Neurosciences; Otorhinolaryngology; Physiology SC Acoustics; Neurosciences & Neurology; Otorhinolaryngology; Physiology GA BY92D UT WOS:A1993BY92D00029 ER PT J AU PINELLI, T BARKLAI, R KENNEDI, D KINI, M BARDZHER, R AF PINELLI, T BARKLAI, R KENNEDI, D KINI, M BARDZHER, R TI COMPARATIVE-ANALYSIS OF COMMUNICATION METHODS IN AEROSPACE FIELD OF RUSSIA AND USA SO NAUCHNO-TEKHNICHESKAYA INFORMATSIYA SERIYA 1-ORGANIZATSIYA I METODIKA INFORMATSIONNOI RABOTY LA Russian DT Article C1 RENSSELAER POLYTECH INST, TROY, NY 12181 USA. INDIANA UNIV, BLOOMINGTON, IN 47401 USA. UNIV TENNESSEE, KNOXVILLE, TN 37996 USA. UNIV ILLINOIS, CHAMPAIGN, IL 61820 USA. RP NASA, LANGLEY RES CTR, HAMPTON, VA 23665 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU VSESOYUZNYI INST NAUCHNO- TEKHNICHESKOI INFORM PI MOSCOW PA BALTIISKAYA UL 14, 1-19 MOSCOW, RUSSIA SN 0548-0019 J9 NAUCH-TEKHN INFORM 1 PY 1993 IS 10 BP 7 EP 13 PG 7 WC Computer Science, Information Systems; Information Science & Library Science SC Computer Science; Information Science & Library Science GA NB537 UT WOS:A1993NB53700002 ER PT B AU SPEZIALE, CG SO, RMC YOUNIS, BA AF SPEZIALE, CG SO, RMC YOUNIS, BA BE So, RMC Speziale, CG Launder, BE TI ON THE PREDICTION OF TURBULENT SECONDARY FLOWS SO NEAR-WALL TURBULENT FLOWS LA English DT Proceedings Paper CT International Conference on Near-Wall Turbulent Flows CY MAR 15-17, 1993 CL TEMPE, AZ C1 NASA,LANGLEY RES CTR,ICASE,HAMPTON,VA 23681. NR 0 TC 5 Z9 5 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 0-444-89663-5 PY 1993 BP 105 EP 114 PG 10 WC Engineering, Mechanical SC Engineering GA BZ43P UT WOS:A1993BZ43P00010 ER PT B AU YANG, Z SHIH, TH AF YANG, Z SHIH, TH BE So, RMC Speziale, CG Launder, BE TI A K-EPSILON MODEL FOR TURBULENT AND TRANSITIONAL BOUNDARY-LAYERS SO NEAR-WALL TURBULENT FLOWS LA English DT Proceedings Paper CT International Conference on Near-Wall Turbulent Flows CY MAR 15-17, 1993 CL TEMPE, AZ C1 NASA,LEWIS RES CTR,ICOMP,CTR MODELING TURBULENCE & TRANSIT,CLEVELAND,OH 44142. NR 0 TC 17 Z9 18 U1 0 U2 1 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 0-444-89663-5 PY 1993 BP 165 EP 175 PG 11 WC Engineering, Mechanical SC Engineering GA BZ43P UT WOS:A1993BZ43P00016 ER PT B AU WANG, CR AF WANG, CR BE So, RMC Speziale, CG Launder, BE TI SUPERSONIC BOUNDARY-LAYER FLOW TURBULENCE MODELING SO NEAR-WALL TURBULENT FLOWS LA English DT Proceedings Paper CT International Conference on Near-Wall Turbulent Flows CY MAR 15-17, 1993 CL TEMPE, AZ C1 NASA,LEWIS RES CTR,DIV INTERNAL FLUID MECH,HEAT TRANSFER BRANCH,CLEVELAND,OH 44135. 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 BN 0-444-89663-5 PY 1993 BP 219 EP 228 PG 10 WC Engineering, Mechanical SC Engineering GA BZ43P UT WOS:A1993BZ43P00021 ER PT B AU COLEMAN, GN SPALART, PR AF COLEMAN, GN SPALART, PR BE So, RMC Speziale, CG Launder, BE TI DIRECT NUMERICAL-SIMULATION OF A SMALL SEPARATION BUBBLE SO NEAR-WALL TURBULENT FLOWS LA English DT Proceedings Paper CT International Conference on Near-Wall Turbulent Flows CY MAR 15-17, 1993 CL TEMPE, AZ C1 NASA,AMES RES CTR,CTR TURBULENCE RES,MOFFETT FIELD,CA 94035. NR 0 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 0-444-89663-5 PY 1993 BP 277 EP 286 PG 10 WC Engineering, Mechanical SC Engineering GA BZ43P UT WOS:A1993BZ43P00026 ER PT B AU MARIANI, P SPALART, P KOLLMANN, W AF MARIANI, P SPALART, P KOLLMANN, W BE So, RMC Speziale, CG Launder, BE TI DIRECT SIMULATION OF A TURBULENT BOUNDARY-LAYER WITH SUCTION SO NEAR-WALL TURBULENT FLOWS LA English DT Proceedings Paper CT International Conference on Near-Wall Turbulent Flows CY MAR 15-17, 1993 CL TEMPE, AZ C1 NASA,AMES RES CTR,MS 202A-2,MOFFETT FIELD,CA 94035. NR 0 TC 17 Z9 18 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 0-444-89663-5 PY 1993 BP 347 EP 356 PG 10 WC Engineering, Mechanical SC Engineering GA BZ43P UT WOS:A1993BZ43P00033 ER PT B AU ZHU, Y ANTONIA, RA KIM, J AF ZHU, Y ANTONIA, RA KIM, J BE So, RMC Speziale, CG Launder, BE TI VELOCITY AND TEMPERATURE DERIVATIVE MEASUREMENTS IN THE NEAR-WALL REGION OF A TURBULENT DUCT FLOW SO NEAR-WALL TURBULENT FLOWS LA English DT Proceedings Paper CT International Conference on Near-Wall Turbulent Flows CY MAR 15-17, 1993 CL TEMPE, AZ C1 UNIV NEWCASTLE,DEPT MECH ENGN,NEWCASTLE,NSW 2308,AUSTRALIA. NASA,AMES RES CTR,CTR TURBULENCE RES,MOFFETT FIELD,CA 94035. RI Zhu, Yonggang/B-3362-2012 OI Zhu, Yonggang/0000-0002-5419-9508 NR 0 TC 9 Z9 9 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 0-444-89663-5 PY 1993 BP 549 EP 561 PG 13 WC Engineering, Mechanical SC Engineering GA BZ43P UT WOS:A1993BZ43P00053 ER PT B AU JOVIC, S AF JOVIC, S BE So, RMC Speziale, CG Launder, BE TI 2-POINT CORRELATION-MEASUREMENTS IN A RECOVERING TURBULENT BOUNDARY-LAYER SO NEAR-WALL TURBULENT FLOWS LA English DT Proceedings Paper CT International Conference on Near-Wall Turbulent Flows CY MAR 15-17, 1993 CL TEMPE, AZ C1 NASA,AMES RES CTR,ELORET INST,MOFFETT FIELD,CA 94035. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ELSEVIER SCIENCE PUBL B V PI AMSTERDAM PA SARA BURGERHARTSTRAAT 25, PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS BN 0-444-89663-5 PY 1993 BP 921 EP 930 PG 10 WC Engineering, Mechanical SC Engineering GA BZ43P UT WOS:A1993BZ43P00086 ER PT J AU LAUNIUS, RD AF LAUNIUS, RD TI WANDERINGS IN THE SOUTHWEST IN 1855 - STILLMAN,JDB SO NEW MEXICO HISTORICAL REVIEW LA English DT Book Review RP LAUNIUS, RD (reprint author), NASA,WASHINGTON,DC 20546, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV NEW MEXICO PI ALBUQUERQUE PA NEW MEXICO HIST REV MESA VISTA 1013, ALBUQUERQUE, NM 87131 SN 0028-6206 J9 NEW MEX HIST REV JI N. M. Hist. Rev. PD JAN PY 1993 VL 68 IS 1 BP 82 EP 83 PG 2 WC History SC History GA LX254 UT WOS:A1993LX25400018 ER PT B AU GOLDBERG, BA POLIDAN, RS CROWE, RA AIKMAN, GCL BAMBERY, RJ GATHRIGHT, JT ODGERS, GJ AF GOLDBERG, BA POLIDAN, RS CROWE, RA AIKMAN, GCL BAMBERY, RJ GATHRIGHT, JT ODGERS, GJ BE Nemec, JM Matthews, JM TI beta-CEPHEI PULSATION ANOMALIES - POTENTIAL NEW WINDOWS INTO THE INSTABILITIES AND EVOLUTION OF EARLY B-STARS SO NEW PERSPECTIVES ON STELLAR PULSATION AND PULSATING VARIABLE STARS SE IAU COLLOQUIUM LA English DT Proceedings Paper CT IAU Colloquium 139 on New Perspectives on Stellar Pulsation and Pulsating Variable Stars CY JUL 15-18, 1992 CL VICTORIA, CANADA SP INT ASTRON UNION 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 0-521-44382-2 J9 IAU COLLOQ PY 1993 VL 139 BP 184 EP 185 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BC55S UT WOS:A1993BC55S00033 ER PT S AU SELLERS, WL DWOYER, DL AF SELLERS, WL DWOYER, DL BE Boutier, A TI REQUIREMENTS FOR FACILITIES AND MEASUREMENT TECHNIQUES TO SUPPORT CFD DEVELOPMENT FOR HYPERSONIC AIRCRAFT SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR C1 NASA,LANGLEY RES CTR,EXPTL METHODS BRANCH,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 1 EP 10 PG 10 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00001 ER PT S AU EXTON, RJ AF EXTON, RJ BE Boutier, A TI ABSORPTION, SCATTERING, AND FLUORESCENCE TECHNIQUES FOR HYPERSONIC FLOW MEASUREMENTS SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR C1 NASA,LANGLEY RES CTR,DIV INSTRUMENT RES,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 205 EP 214 PG 10 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00018 ER PT S AU MCKENZIE, RL FLETCHER, DG AF MCKENZIE, RL FLETCHER, DG BE Boutier, A TI LASER-SPECTROSCOPIC MEASUREMENT TECHNIQUES FOR HYPERSONIC, TURBULENT WIND TUNNEL FLOWS SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR 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 SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 235 EP 244 PG 10 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00021 ER PT S AU HUNTER, WW GARTRELL, LR HUMPHREYS, WM WITTE, DW NICHOLS, CE AF HUNTER, WW GARTRELL, LR HUMPHREYS, WM WITTE, DW NICHOLS, CE BE Boutier, A TI DEVELOPMENT AND ASSESSMENT OF AN LDV SYSTEM FOR MACH 6 FLOW FIELD MEASUREMENTS SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 337 EP 346 PG 10 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00031 ER PT S AU SEASHOLTZ, RG AF SEASHOLTZ, RG BE Boutier, A TI 2D VELOCITY AND TEMPERATURE MEASUREMENTS IN HIGH SPEED FLOWS BASED ON SPECTRALLY RESOLVED RAYLEIGH SCATTERING SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR C1 NASA,LEWIS RES CTR,OPT MEASUREMENT SYST BRANCH,CLEVELAND,OH 44135. NR 0 TC 1 Z9 1 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 399 EP 408 PG 10 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00037 ER PT S AU MILLER, CG AF MILLER, CG BE Boutier, A TI AEROTHERMODYNAMIC MEASUREMENT TECHNIQUES EMPLOYED IN NASA LANGLEY HYPERSONIC FACILITIES SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR C1 NASA,LANGLEY RES CTR,EXPTL HYPERSON BRANCH,HAMPTON,VA 23665. NR 0 TC 1 Z9 1 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 449 EP 459 PG 11 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00040 ER PT S AU OCHELTREE, SL AF OCHELTREE, SL BE Boutier, A TI INTRODUCTION TO SESSION-7 - RECOMMENDATIONS FOR FUTURE RESEARCH IN HYPERSONIC INSTRUMENTATION SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 545 EP 548 PG 4 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00049 ER PT S AU MILLER, CG NAUMANN, KW AF MILLER, CG NAUMANN, KW BE Boutier, A TI PRESSURE AND FORCE MEASUREMENTS ON MODELS SET IN HYPERSONIC FLOWS - A REVIEW SO NEW TRENDS IN INSTRUMENTATION FOR HYPERSONIC RESEARCH SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Research Workshop on New Trends in Instrumentation for Hypersonic Research CY APR 27-MAY 01, 1992 CL ONERA LE FAUGA MAUZAC CTR, FRANCE SP NATO HO ONERA LE FAUGA MAUZAC CTR C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-2024-7 J9 NATO ADV SCI INST SE PY 1993 VL 224 BP 583 EP 592 PG 10 WC Engineering, Aerospace; Engineering, Mechanical; Instruments & Instrumentation; Mechanics; Spectroscopy SC Engineering; Instruments & Instrumentation; Mechanics; Spectroscopy GA BC72S UT WOS:A1993BC72S00052 ER PT S AU BROOKS, TF AF BROOKS, TF BE Hubbard, HH TI STUDIES OF BLADE-VORTEX INTERACTION NOISE-REDUCTION BY ROTOR BLADE MODIFICATION SO NOISE-CON 93 PROCEEDINGS - 1993 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING: NOISE CONTROL IN AEROACOUSTICS SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 1993 National Conference on Noise Control Engineering: Noise Control in Aeroacoustics CY MAY 02-05, 1993 CL WILLIAMSBURG, VA SP NASA, LANGLEY RES CTR, INST NOISE CONTROL ENGN C1 NASA,LANGLEY RES CTR,DIV ACOUST,HAMPTON,VA 23681. NR 0 TC 1 Z9 1 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-26-3 J9 NOISE CON P PY 1993 BP 57 EP 66 PG 10 WC Acoustics; Engineering, Aerospace SC Acoustics; Engineering GA BB62Z UT WOS:A1993BB62Z00009 ER PT S AU JONES, MG PARROTT, TL AF JONES, MG PARROTT, TL BE Hubbard, HH TI ENHANCED BROAD-BAND ABSORPTION FOR DUCT LINERS BY MEANS OF SPATIALLY VARYING IMPEDANCES SO NOISE-CON 93 PROCEEDINGS - 1993 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING: NOISE CONTROL IN AEROACOUSTICS SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 1993 National Conference on Noise Control Engineering: Noise Control in Aeroacoustics CY MAY 02-05, 1993 CL WILLIAMSBURG, VA SP NASA, LANGLEY RES CTR, INST NOISE CONTROL ENGN C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-26-3 J9 NOISE CON P PY 1993 BP 279 EP 284 PG 6 WC Acoustics; Engineering, Aerospace SC Acoustics; Engineering GA BB62Z UT WOS:A1993BB62Z00045 ER PT S AU LEATHERWOOD, JD SULLIVAN, BM AF LEATHERWOOD, JD SULLIVAN, BM BE Hubbard, HH TI RECENT LABORATORY STUDIES OF LOUDNESS AND ANNOYANCE RESPONSE TO SONIC-BOOMS SO NOISE-CON 93 PROCEEDINGS - 1993 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING: NOISE CONTROL IN AEROACOUSTICS SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 1993 National Conference on Noise Control Engineering: Noise Control in Aeroacoustics CY MAY 02-05, 1993 CL WILLIAMSBURG, VA SP NASA, LANGLEY RES CTR, INST NOISE CONTROL ENGN C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-26-3 J9 NOISE CON P PY 1993 BP 367 EP 372 PG 6 WC Acoustics; Engineering, Aerospace SC Acoustics; Engineering GA BB62Z UT WOS:A1993BB62Z00060 ER PT S AU MUELLER, AW SMITH, CD LEMASURIER, P AF MUELLER, AW SMITH, CD LEMASURIER, P BE Hubbard, HH TI IMPROVEMENT OF THE PREDICTED AURAL DETECTION CODE ICHIN (I CAN HEAR IT NOW) SO NOISE-CON 93 PROCEEDINGS - 1993 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING: NOISE CONTROL IN AEROACOUSTICS SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 1993 National Conference on Noise Control Engineering: Noise Control in Aeroacoustics CY MAY 02-05, 1993 CL WILLIAMSBURG, VA SP NASA, LANGLEY RES CTR, INST NOISE CONTROL ENGN C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-26-3 J9 NOISE CON P PY 1993 BP 403 EP 408 PG 6 WC Acoustics; Engineering, Aerospace SC Acoustics; Engineering GA BB62Z UT WOS:A1993BB62Z00066 ER PT S AU COOPER, BA AF COOPER, BA BE Hubbard, HH TI A LARGE HEMIANECHOIC ENCLOSURE FOR COMMUNITY-COMPATIBLE AEROACOUSTIC TESTING OF AIRCRAFT PROPULSION SYSTEMS SO NOISE-CON 93 PROCEEDINGS - 1993 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING: NOISE CONTROL IN AEROACOUSTICS SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 1993 National Conference on Noise Control Engineering: Noise Control in Aeroacoustics CY MAY 02-05, 1993 CL WILLIAMSBURG, VA SP NASA, LANGLEY RES CTR, INST NOISE CONTROL ENGN C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-26-3 J9 NOISE CON P PY 1993 BP 485 EP 490 PG 6 WC Acoustics; Engineering, Aerospace SC Acoustics; Engineering GA BB62Z UT WOS:A1993BB62Z00081 ER PT S AU BROWN, MC SEINER, JM AF BROWN, MC SEINER, JM BE Hubbard, HH TI CALIBRATING 1/4-INCH CONDENSER MICROPHONES TO 100 KHZ USING A POINT-LIKE SOURCE SIMULATION DEVICE SO NOISE-CON 93 PROCEEDINGS - 1993 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING: NOISE CONTROL IN AEROACOUSTICS SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 1993 National Conference on Noise Control Engineering: Noise Control in Aeroacoustics CY MAY 02-05, 1993 CL WILLIAMSBURG, VA SP NASA, LANGLEY RES CTR, INST NOISE CONTROL ENGN C1 NASA LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-26-3 J9 NOISE CON P PY 1993 BP 503 EP 510 PG 8 WC Acoustics; Engineering, Aerospace SC Acoustics; Engineering GA BB62Z UT WOS:A1993BB62Z00084 ER PT S AU COATS, TJ SILCOX, RJ LESTER, HC AF COATS, TJ SILCOX, RJ LESTER, HC BE Hubbard, HH TI NUMERICAL INVESTIGATION OF SOUND-TRANSMISSION THROUGH DOUBLE-WALL CYLINDERS WITH RESPECT TO ACTIVE NOISE-CONTROL SO NOISE-CON 93 PROCEEDINGS - 1993 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING: NOISE CONTROL IN AEROACOUSTICS SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 1993 National Conference on Noise Control Engineering: Noise Control in Aeroacoustics CY MAY 02-05, 1993 CL WILLIAMSBURG, VA SP NASA, LANGLEY RES CTR, INST NOISE CONTROL ENGN C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-26-3 J9 NOISE CON P PY 1993 BP 535 EP 540 PG 6 WC Acoustics; Engineering, Aerospace SC Acoustics; Engineering GA BB62Z UT WOS:A1993BB62Z00089 ER PT B AU DEATON, JB ROGOWSKI, RS AF DEATON, JB ROGOWSKI, RS BE Valley, MT DelGrande, NK Kobayashi, AS TI APPLICATIONS OF ELECTRONIC SHEAROGRAPHY FOR THE INSPECTION OF AIRSKIN STRUCTURES SO NONDESTRUCTIVE INSPECTION OF AGING AIRCRAFT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Nondestructive Inspection of Aging Aircraft CY JUL 14-15, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LANGLEY RES CTR,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 0-8194-1250-3 J9 P SOC PHOTO-OPT INS PY 1993 VL 2001 BP 224 EP 235 PG 12 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BZ74T UT WOS:A1993BZ74T00021 ER PT B AU GLAZMAN, RE AF GLAZMAN, RE BE Fitzmaurice, N Gurarie, D McCaughan, F Woyczynski, WA TI WAVE SPECTRA OF DEVELOPED SEAS SO NONLINEAR WAVES AND WEAK TURBULENCE WITH APPLICATIONS IN OCEANOGRAPHY AND CONDENSED MATTER PHYSICS SE PROGRESS IN NONLINEAR DIFFERENTIAL EQUATIONS AND THEIR APPLICATIONS LA English DT Proceedings Paper CT NSF-CBMS Conference on Nonlinear Waves and Weak Turbulence CY MAY, 1992 CL CASE WESTERN RESERVE UNIV, CLEVELAND, OH SP NATL SCI FDN, USN, OFF NAVAL RES, CASE WESTERN RESERVE UNIV, CTR STOCHAST & CHAOT PROC SCI & TECHNOL HO CASE WESTERN RESERVE UNIV C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU BIRKHAUSER BOSTON PI CAMBRIDGE PA 675 MASSACHUSETTS AVE, CAMBRIDGE, MA 02139-2333 BN 0-8176-3667-6 J9 PROG NONLIN PY 1993 VL 11 BP 45 EP 68 PG 24 WC Mathematics, Applied; Mechanics; Physics, Fluids & Plasmas SC Mathematics; Mechanics; Physics GA BA73P UT WOS:A1993BA73P00003 ER PT B AU GOLDSTEIN, ME LEE, SS AF GOLDSTEIN, ME LEE, SS BE Fitzmaurice, N Gurarie, D McCaughan, F Woyczynski, WA TI OBLIQUE INSTABILITY WAVES IN NEARLY PARALLEL SHEAR FLOWS SO NONLINEAR WAVES AND WEAK TURBULENCE WITH APPLICATIONS IN OCEANOGRAPHY AND CONDENSED MATTER PHYSICS SE PROGRESS IN NONLINEAR DIFFERENTIAL EQUATIONS AND THEIR APPLICATIONS LA English DT Proceedings Paper CT NSF-CBMS Conference on Nonlinear Waves and Weak Turbulence CY MAY, 1992 CL CASE WESTERN RESERVE UNIV, CLEVELAND, OH SP NATL SCI FDN, USN, OFF NAVAL RES, CASE WESTERN RESERVE UNIV, CTR STOCHAST & CHAOT PROC SCI & TECHNOL HO CASE WESTERN RESERVE UNIV C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 4 Z9 4 U1 0 U2 0 PU BIRKHAUSER BOSTON PI CAMBRIDGE PA 675 MASSACHUSETTS AVE, CAMBRIDGE, MA 02139-2333 BN 0-8176-3667-6 J9 PROG NONLIN PY 1993 VL 11 BP 159 EP 177 PG 19 WC Mathematics, Applied; Mechanics; Physics, Fluids & Plasmas SC Mathematics; Mechanics; Physics GA BA73P UT WOS:A1993BA73P00009 ER PT B AU FRIEMAN, JA AF FRIEMAN, JA BE Guidry, MW Strayer, MR TI SOME RECENT DEVELOPMENTS IN COSMOLOGY - DARK-MATTER, INFLATION, AND COBE SO NUCLEAR PHYSICS IN THE UNIVERSE LA English DT Proceedings Paper CT 1st Symposium on Nuclear Physics in the Universe CY SEP 24-26, 1992 CL OAK RIDGE, TN SP OAK RIDGE NATL LAB, THEORET PHYS SECT, VANDERBILT UNIV & DREXEL UNIV, JOINT INST HEAVY ION RES C1 FERMILAB NATL ACCELERATOR LAB,NASA,CTR ASTROPHYS,BATAVIA,IL 60510. NR 0 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX BN 0-7503-0279-8 PY 1993 BP 111 EP 125 PG 15 WC Astronomy & Astrophysics; Physics, Nuclear SC Astronomy & Astrophysics; Physics GA BA21Q UT WOS:A1993BA21Q00008 ER PT B AU GLASSER, CA ODELL, CE SEUFERT, SE AF GLASSER, CA ODELL, CE SEUFERT, SE BE Klaisner, LA TI THE PROPORTIONAL COUNTER ARRAY (PCA) INSTRUMENT FOR THE X-RAY TIMING EXPLORER SATELLITE (XTE) SO NUCLEAR SCIENCE SYMPOSIUM & MEDICAL IMAGING CONFERENCE, VOLS 1-3: 1993 IEEE CONFERENCE RECORD LA English DT Proceedings Paper CT Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 93) CY OCT 30-NOV 06, 1993 CL SAN FRANCISCO, CA SP IEEE C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. 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 0-7803-1487-5 PY 1993 BP 92 EP 96 DI 10.1109/NSSMIC.1993.701656 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Engineering; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA BA79S UT WOS:A1993BA79S00018 ER PT B AU HUBBARD, GS MCMURRAY, RE KELLER, RG WERCINSKY, PF WALTON, JT WONG, YK AF HUBBARD, GS MCMURRAY, RE KELLER, RG WERCINSKY, PF WALTON, JT WONG, YK BE Klaisner, LA TI VARIABLE-TEMPERATURE PERFORMANCE OF A SI(LI) DETECTOR STACK SO NUCLEAR SCIENCE SYMPOSIUM & MEDICAL IMAGING CONFERENCE, VOLS 1-3: 1993 IEEE CONFERENCE RECORD LA English DT Proceedings Paper CT Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 93) CY OCT 30-NOV 06, 1993 CL SAN FRANCISCO, CA SP IEEE C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. 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 0-7803-1487-5 PY 1993 BP 363 EP 367 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Engineering; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA BA79S UT WOS:A1993BA79S00073 ER PT B AU BARRY, A SHEPPARD, D AF BARRY, A SHEPPARD, D BE Klaisner, LA TI HIGH-SPEED DATA-ACQUISITION SYSTEM FOR LARGE-AREA PROPORTIONAL-COUNTERS SO NUCLEAR SCIENCE SYMPOSIUM & MEDICAL IMAGING CONFERENCE, VOLS 1-3: 1993 IEEE CONFERENCE RECORD LA English DT Proceedings Paper CT Nuclear Science Symposium and Medical Imaging Conference (NSS-MIC 93) CY OCT 30-NOV 06, 1993 CL SAN FRANCISCO, CA SP IEEE C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. 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 0-7803-1487-5 PY 1993 BP 373 EP 377 DI 10.1109/NSSMIC.1993.701691 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Engineering; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA BA79S UT WOS:A1993BA79S00075 ER PT B AU YEE, HC SWEBY, PK LAFON, A AF YEE, HC SWEBY, PK LAFON, A BE Baines, MJ Morton, KW TI BASINS OF ATTRACTION AND THE TIME-DEPENDENT APPROACH TO OBTAINING STEADY-STATE NUMERICAL-SOLUTIONS SO NUMERICAL METHODS FOR FLUID DYNAMICS 4 LA English DT Proceedings Paper CT International Conference on Numerical Methods for Fluid Dynamics CY APR, 1992 CL READING UNIV, READING, ENGLAND SP INST COMP FLUID DYNAM HO READING UNIV C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU OXFORD UNIVERSITY PRESS PI OXFORD PA WALTON ST, OXFORD, ENGLAND OX2 6DP BN 0-19-853696-8 PY 1993 BP 135 EP 162 PG 28 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA BB68K UT WOS:A1993BB68K00009 ER PT B AU WARREN, GP ANDERSON, WK THOMAS, JL KRIST, SL AF WARREN, GP ANDERSON, WK THOMAS, JL KRIST, SL BE Baines, MJ Morton, KW TI GRID CONVERGENCE FOR ADAPTIVE METHODS SO NUMERICAL METHODS FOR FLUID DYNAMICS 4 LA English DT Proceedings Paper CT International Conference on Numerical Methods for Fluid Dynamics CY APR, 1992 CL READING UNIV, READING, ENGLAND SP INST COMP FLUID DYNAM HO READING UNIV C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 2 PU OXFORD UNIVERSITY PRESS PI OXFORD PA WALTON ST, OXFORD, ENGLAND OX2 6DP BN 0-19-853696-8 PY 1993 BP 317 EP 328 PG 12 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA BB68K UT WOS:A1993BB68K00024 ER PT B AU QUIRK, JJ AF QUIRK, JJ BE Baines, MJ Morton, KW TI A CARTESIAN GRID SCHEME FOR GAS-DYNAMIC FLOWS THAT INVOLVE COMPLEX GEOMETRIES SO NUMERICAL METHODS FOR FLUID DYNAMICS 4 LA English DT Proceedings Paper CT International Conference on Numerical Methods for Fluid Dynamics CY APR, 1992 CL READING UNIV, READING, ENGLAND SP INST COMP FLUID DYNAM HO READING UNIV C1 NASA,LANGLEY RES CTR,ICASE,HAMPTON,VA 23665. NR 0 TC 0 Z9 0 U1 0 U2 0 PU OXFORD UNIVERSITY PRESS PI OXFORD PA WALTON ST, OXFORD, ENGLAND OX2 6DP BN 0-19-853696-8 PY 1993 BP 385 EP 391 PG 7 WC Mechanics; Physics, Fluids & Plasmas SC Mechanics; Physics GA BB68K UT WOS:A1993BB68K00031 ER PT J AU SHEBALIN, JV AF SHEBALIN, JV TI ELECTROMAGNETIC POTENTIAL VECTORS AND SPONTANEOUS SYMMETRY-BREAKING SO NUOVO CIMENTO DELLA SOCIETA ITALIANA DI FISICA B-GENERAL PHYSICS RELATIVITY ASTRONOMY AND MATHEMATICAL PHYSICS AND METHODS LA English DT Note DE FUNDAMENTAL PROBLEMS AND GENERAL FORMALISM; CANONICAL FORMALISM, LAGRANGIANS, AND VARIATIONAL PRINCIPLES AB In general, electrodynamics requires two independent three-dimensional potential vectors for each Fourier mode, analogous to the position and momentum vectors of particle mechanics. The scalar potential may then be completely eliminated from the theory and a charged-particle Lagrangian will quite naturally contain a spontaneous-symmetry-breaking potential. RP SHEBALIN, JV (reprint author), NASA,LANGLEY RES CTR,INST COMP APPLICAT SCI & ENGN,HAMPTON,VA 23665, USA. NR 2 TC 2 Z9 2 U1 0 U2 0 PU EDITRICE COMPOSITORI BOLOGNA PI BOLOGNA PA VIA STALINGRADO 97/2, I-40128 BOLOGNA, ITALY SN 0369-3554 J9 NUOVO CIMENTO B JI Nouvo Cimento Soc. Ital. Fis. B-Gen. Phys. Relativ. Astron. Math. Phys. Methods PD JAN PY 1993 VL 108 IS 1 BP 99 EP 101 DI 10.1007/BF02874345 PG 3 WC Physics, Multidisciplinary SC Physics GA KX367 UT WOS:A1993KX36700012 ER PT J AU CRAIGSCHMIDT, M WHITE, MT TEER, P JOHNSON, J LANE, HW AF CRAIGSCHMIDT, M WHITE, MT TEER, P JOHNSON, J LANE, HW TI MENHADEN, COCONUT, AND CORN OILS AND MAMMARY-TUMOR INCIDENCE IN BALB/C VIRGIN FEMALE MICE TREATED WITH DMBA SO NUTRITION AND CANCER-AN INTERNATIONAL JOURNAL LA English DT Article ID SPRAGUE-DAWLEY RATS; FATTY-ACIDS; DIETARY-FAT; TUMORIGENESIS; N-3; 7,12-DIMETHYLBENZ(A)ANTHRACENE; CARCINOGENESIS; SUSCEPTIBILITY; INCREASES; MEMBRANES AB Omega-3 fatty (n-3) acids are believed to inhibit the rate of occurrence and the growth of mammary tumors in rats treated with 7,12-dimethylbenz[a]anthracene (DMBA). Linoleic acid, on the other hand, has been shown to promote mammary tumorigenesis. This study was undertaken to see whether replacing 18% of the corn oil (high in linoleic acid) in a 20% fat diet with menhaden oil (high in n-3 fatty acids, low in linoleic acid) or coconut oil (low in n-3 fatty acids, low in linoleic acid), while keeping constant the cholesterol antioxidant, and total fat content, would affect tumor incidence in virgin female BALB/c mice dosed with DMBA. Dietary treatment had no effect on body weight, feed intake, or survival to 44 weeks of age (36 wks after the first of 6 DMBA doses). Mammary tumor incidence was the same in the menhaden oil and coconut oil diet groups but was significantly higher in the 20% corn oil diet group. The protective effect of menhaden oil and coconut oil may be due, at least in part, to the decreased linoleic acid content of these diets relative to the corn oil diet. We conclude that n-3 fatty acids per se do not seem to inhibit tumor formation. C1 NASA,LYNDON B JOHNSON SPACE CTR,BIOMED OPERAT & RES BRANCH,MAIL CODE 504,HOUSTON,TX 77058. ALABAMA AGR EXPT STN,DEPT NUTR & FOOD SCI,AUBURN,AL 36849. AUBURN UNIV,COLL VET MED,DEPT PATHOBIOL,AUBURN,AL 36849. NR 24 TC 17 Z9 18 U1 0 U2 0 PU LAWRENCE ERLBAUM ASSOC INC PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430-2262 SN 0163-5581 J9 NUTR CANCER JI Nutr. Cancer PY 1993 VL 20 IS 2 BP 99 EP 106 PG 8 WC Oncology; Nutrition & Dietetics SC Oncology; Nutrition & Dietetics GA LW485 UT WOS:A1993LW48500001 PM 8233985 ER PT B AU LEITER, D BOLDT, E AF LEITER, D BOLDT, E BE Chincarini, G Iovino, A Maccacaro, T Maccagni, D TI SPECTRAL-LUMINOSITY EVOLUTION OF ACTIVE GALACTIC NUCLEI AND THE CXB (COSMIC X-RAY-BACKGROUND) SO OBSERVATIONAL COSMOLOGY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT International Symposium on Observational Cosmology CY SEP 21-25, 1992 CL MILAN, ITALY SP CNR, IST FIS COSMICA, OSSERV ASTRON BRERA, UNIV MILANO, PHYS DEPT, EUROPEAN ASTRON SOC C1 NASA,GODDARD SPACE FLIGHT CTR,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 0-937707-70-8 J9 ASTR SOC P PY 1993 VL 51 BP 473 EP 474 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94Y UT WOS:A1993BZ94Y00109 ER PT B AU SILVERBERG, RF CHENG, ES COTTINGHAM, DA FIXSEN, DJ GENTIEU, EP INMAN, CA MEYER, SS PUCHALLA, JL PAGE, LA AF SILVERBERG, RF CHENG, ES COTTINGHAM, DA FIXSEN, DJ GENTIEU, EP INMAN, CA MEYER, SS PUCHALLA, JL PAGE, LA BE Chincarini, G Iovino, A Maccacaro, T Maccagni, D TI PRELIMINARY-RESULTS FROM THE GODDARD MIT MEDIUM-SCALE ANISOTROPY EXPERIMENT SO OBSERVATIONAL COSMOLOGY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT International Symposium on Observational Cosmology CY SEP 21-25, 1992 CL MILAN, ITALY SP CNR, IST FIS COSMICA, OSSERV ASTRON BRERA, UNIV MILANO, PHYS DEPT, EUROPEAN ASTRON SOC C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,INFRARED ASTOPHYS BRANCH,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 0-937707-70-8 J9 ASTR SOC P PY 1993 VL 51 BP 497 EP 498 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94Y UT WOS:A1993BZ94Y00113 ER PT B AU CHENG, ES AF CHENG, ES BE Chincarini, G Iovino, A Maccacaro, T Maccagni, D TI FAR-INFRARED COSMOLOGY MEASUREMENTS - THE FIRAS SPECTRUM AND OTHER CURIOUS RESULTS SO OBSERVATIONAL COSMOLOGY SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT International Symposium on Observational Cosmology CY SEP 21-25, 1992 CL MILAN, ITALY SP CNR, IST FIS COSMICA, OSSERV ASTRON BRERA, UNIV MILANO, PHYS DEPT, EUROPEAN ASTRON SOC C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,INFRARED ASTROPHYS BRANCH,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 0-937707-70-8 J9 ASTR SOC P PY 1993 VL 51 BP 501 EP 511 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94Y UT WOS:A1993BZ94Y00115 ER PT S AU JACOBS, CS SOVERS, OJ WILLIAMS, JG STANDISH, EM AF JACOBS, CS SOVERS, OJ WILLIAMS, JG STANDISH, EM BE Singh, RP Feissel, M Tapley, BD Shum, CK TI THE EXTRAGALACTIC AND SOLAR-SYSTEM CELESTIAL FRAMES - ACCURACY, STABILITY, AND INTERCONNECTION SO OBSERVATIONS OF EARTH FROM SPACE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP / TOPICAL MEETINGS OF COSPAR-INTERDISCIPLINARY-COMMISSION : OBSERVATIONS ON EARTH FROM SPACE, AT THE COSPAR 29TH-PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, COMM SCI & TECHNOL DEV COUNTRIES, INT UNION GEODESY & GEOPHYS, UNESCO, INT ASTRONAUT FEDERAT, INT UNION GEODESY & GEOPHYS, INT ASSOC GEODESY RP JACOBS, CS (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 0 TC 7 Z9 7 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042347-7 J9 ADV SPACE RES PY 1993 VL 13 BP 161 EP 174 DI 10.1016/0273-1177(93)90219-2 PG 14 WC Geosciences, Multidisciplinary SC Geology GA BZ37A UT WOS:A1993BZ37A00025 ER PT S AU DICKEY, JO AF DICKEY, JO BE Singh, RP Feissel, M Tapley, BD Shum, CK TI HIGH TIME RESOLUTION MEASUREMENTS OF EARTH ROTATION SO OBSERVATIONS OF EARTH FROM SPACE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP / TOPICAL MEETINGS OF COSPAR-INTERDISCIPLINARY-COMMISSION : OBSERVATIONS ON EARTH FROM SPACE, AT THE COSPAR 29TH-PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, COMM SCI & TECHNOL DEV COUNTRIES, INT UNION GEODESY & GEOPHYS, UNESCO, INT ASTRONAUT FEDERAT, INT UNION GEODESY & GEOPHYS, INT ASSOC GEODESY RP DICKEY, JO (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042347-7 J9 ADV SPACE RES PY 1993 VL 13 BP 185 EP 196 DI 10.1016/0273-1177(93)90221-V PG 12 WC Geosciences, Multidisciplinary SC Geology GA BZ37A UT WOS:A1993BZ37A00027 ER PT S AU SMITH, EJ AF SMITH, EJ BE Page, DE TI MAGNETIC-FIELDS THROUGHOUT THE HELIOSPHERE SO OBSERVATIONS OF THE OUTER HELIOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON OBSERVATIONS OF THE OUTER HELIOSPHERE AT THE 29TH COSPAR PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP SMITH, EJ (reprint author), JET PROP LAB,4800 OAK GROVE DR,M-S 169-506,PASADENA,CA 91109, USA. NR 0 TC 40 Z9 40 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042208-X J9 ADV SPACE RES PY 1993 VL 13 BP 5 EP 14 DI 10.1016/0273-1177(93)90384-N PG 10 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA BY25S UT WOS:A1993BY25S00001 ER PT S AU BURLAGA, LF AF BURLAGA, LF BE Page, DE TI SOLAR-WIND BEHAVIOR THROUGHOUT THE HELIOSPHERE SO OBSERVATIONS OF THE OUTER HELIOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON OBSERVATIONS OF THE OUTER HELIOSPHERE AT THE 29TH COSPAR PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP BURLAGA, LF (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GSFC,EXRATERR PHYS LAB,CODE 692,GREENBELT,MD 20771, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042208-X J9 ADV SPACE RES PY 1993 VL 13 BP 27 EP 35 DI 10.1016/0273-1177(93)90386-P PG 9 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA BY25S UT WOS:A1993BY25S00003 ER PT S AU AJELLO, JM PRYOR, WR BARTH, CA HORD, CW SIMMONS, KE AF AJELLO, JM PRYOR, WR BARTH, CA HORD, CW SIMMONS, KE BE Page, DE TI SOLAR-WIND LATITUDE VARIATIONS AND MULTIPLE-SCATTERING FROM GALILEO INTERPLANETARY LYMAN-ALPHA OBSERVATIONS SO OBSERVATIONS OF THE OUTER HELIOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON OBSERVATIONS OF THE OUTER HELIOSPHERE AT THE 29TH COSPAR PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP AJELLO, JM (reprint author), JET PROP LAB,4800 OAK GROVE DR,M-S 169-506,PASADENA,CA 91109, USA. NR 0 TC 10 Z9 10 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042208-X J9 ADV SPACE RES PY 1993 VL 13 BP 37 EP 40 DI 10.1016/0273-1177(93)90387-Q PG 4 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA BY25S UT WOS:A1993BY25S00004 ER PT S AU OSHEROVICH, VA FARRUGIA, CJ BURLAGA, LF AF OSHEROVICH, VA FARRUGIA, CJ BURLAGA, LF BE Page, DE TI DYNAMICS OF AGING MAGNETIC CLOUDS SO OBSERVATIONS OF THE OUTER HELIOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON OBSERVATIONS OF THE OUTER HELIOSPHERE AT THE 29TH COSPAR PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP OSHEROVICH, VA (reprint author), NASA,GSFC,HUGHES STX,4400 FORBES BLVD,LANHAM,MD 20706, USA. NR 0 TC 74 Z9 76 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042208-X J9 ADV SPACE RES PY 1993 VL 13 BP 57 EP 62 DI 10.1016/0273-1177(93)90391-N PG 6 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA BY25S UT WOS:A1993BY25S00008 ER PT S AU COOPER, JF BAKER, DN AF COOPER, JF BAKER, DN BE Page, DE TI MAGNETOSPHERIC MODELS FOR ELECTRON ACCELERATION AND TRANSPORT IN THE HELIOSPHERE SO OBSERVATIONS OF THE OUTER HELIOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON OBSERVATIONS OF THE OUTER HELIOSPHERE AT THE 29TH COSPAR PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON 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 0 TC 1 Z9 1 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042208-X J9 ADV SPACE RES PY 1993 VL 13 BP 103 EP 106 DI 10.1016/0273-1177(93)90398-U PG 4 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA BY25S UT WOS:A1993BY25S00015 ER PT S AU DYAL, P AF DYAL, P BE Page, DE TI FUTURE OPERATIONS OF PIONEER-10 AND PIONEER-11 SO OBSERVATIONS OF THE OUTER HELIOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON OBSERVATIONS OF THE OUTER HELIOSPHERE AT THE 29TH COSPAR PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON RP DYAL, P (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 0 TC 0 Z9 0 U1 2 U2 2 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042208-X J9 ADV SPACE RES PY 1993 VL 13 BP 267 EP 274 DI 10.1016/0273-1177(93)90419-C PG 8 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA BY25S UT WOS:A1993BY25S00036 ER PT B AU MCCLAIN, CR AF MCCLAIN, CR BE Barale, V Schlittenhardt, PM TI REVIEW OF MAJOR CZCS APPLICATIONS - UNITED-STATES CASE-STUDIES SO OCEAN COLOUR : THEORY AND APPLICATIONS IN A DECADE OF CZCS EXPERIENCE SE EUROCOURSES-REMOTE SENSING LA English DT Proceedings Paper CT Workshop on Ocean Colour : Theory and Applications in a Decade of CZCS Experience held in the Framework of ISY 92 GPO Activity CY OCT 21-25, 1991 CL ISPRA, ITALY SP INST REMOTE SENSING APPL, COMMISS EUROPEAN COMMUNITIES, JOINT RES CTR C1 NASA,GODDARD SPACE FLIGHT CTR,OCEANS & ICE BRANCH,GREENBELT,MD 21114. NR 0 TC 10 Z9 10 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS BN 0-7923-1586-3 J9 EURO COURS REM SENS PY 1993 VL 3 BP 167 EP 188 PG 22 WC Marine & Freshwater Biology; Oceanography SC Marine & Freshwater Biology; Oceanography GA BZ40M UT WOS:A1993BZ40M00007 ER PT B AU NGHIEM, SV LI, FK LOU, SH NEUMANN, G AF NGHIEM, SV LI, FK LOU, SH NEUMANN, G GP IEEE TI OCEAN REMOTE SENSING WITH AIRBORNE K(U)-BAND SCATTEROMETER SO OCEANS 93 - PROCEEDINGS, VOLS 1-3: ENGINEERING IN HARMONY WITH THE OCEAN LA English DT Proceedings Paper CT Oceans 93 - Engineering in Harmony with the Ocean CY OCT 18-21, 1993 CL VICTORIA, CANADA SP IEEE, OCEAN ENGN 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 0-7803-1385-2 PY 1993 BP A20 EP A24 PG 5 WC Engineering, Marine; Engineering, Electrical & Electronic SC Engineering GA BC53C UT WOS:A1993BC53C00099 ER PT B AU YUEH, SH KWOK, R LI, FK NGHIEM, SV WILSON, WJ KONG, JA AF YUEH, SH KWOK, R LI, FK NGHIEM, SV WILSON, WJ KONG, JA GP IEEE TI POLARIMETRIC PASSIVE REMOTE SENSING OF WIND-GENERATED SEA SURFACES AND OCEAN WIND VECTORS SO OCEANS 93 - PROCEEDINGS, VOLS 1-3: ENGINEERING IN HARMONY WITH THE OCEAN LA English DT Proceedings Paper CT Oceans 93 - Engineering in Harmony with the Ocean CY OCT 18-21, 1993 CL VICTORIA, CANADA SP IEEE, OCEAN ENGN 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 0-7803-1385-2 PY 1993 BP A31 EP A37 PG 7 WC Engineering, Marine; Engineering, Electrical & Electronic SC Engineering GA BC53C UT WOS:A1993BC53C00101 ER PT B AU WOOD, HJ HINKAL, SW AF WOOD, HJ HINKAL, SW BE Ruda, MC TI AN OVERVIEW OF THE HST OPTICAL-SYSTEMS PERFORMANCE SO OPTICAL ALIGNMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Alignment CY JUL 14-15, 1993 CL SAN DIEGO, CA 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 0-8194-1245-7 J9 P SOC PHOTO-OPT INS PY 1993 VL 1996 BP 134 EP 143 DI 10.1117/12.160407 PG 10 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BZ45M UT WOS:A1993BZ45M00013 ER PT B AU FANSON, JL TRAUGER, JT AF FANSON, JL TRAUGER, JT BE Ruda, MC TI ACTIVE MIRRORS FOR ON-ORBIT ALIGNMENT OF THE 2ND-GENERATION WIDE-FIELD AND PLANETARY CAMERA SO OPTICAL ALIGNMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Alignment CY JUL 14-15, 1993 CL SAN DIEGO, 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 0-8194-1245-7 J9 P SOC PHOTO-OPT INS PY 1993 VL 1996 BP 149 EP 158 DI 10.1117/12.160409 PG 10 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BZ45M UT WOS:A1993BZ45M00015 ER PT B AU MCGUIRE, JP KORECHOFF, RP AF MCGUIRE, JP KORECHOFF, RP BE Ruda, MC TI OPTICAL ALIGNMENT AND TEST OF WIDE-FIELD PLANETARY CAMERA-II SO OPTICAL ALIGNMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Alignment CY JUL 14-15, 1993 CL SAN DIEGO, 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 0-8194-1245-7 J9 P SOC PHOTO-OPT INS PY 1993 VL 1996 BP 159 EP 174 PG 16 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BZ45M UT WOS:A1993BZ45M00016 ER PT B AU VAUGHAN, AH PAGE, NA CHAVE, RG ALMARZOUK, K RAYCES, JL AF VAUGHAN, AH PAGE, NA CHAVE, RG ALMARZOUK, K RAYCES, JL BE Ruda, MC TI OPTICAL DESIGN, FABRICATION, AND ALIGNMENT OF A HUBBLE-SPACE-TELESCOPE SIMULATOR FOR WIDE FIELD/PLANETARY CAMERA .2. SO OPTICAL ALIGNMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Alignment CY JUL 14-15, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1245-7 J9 P SOC PHOTO-OPT INS PY 1993 VL 1996 BP 175 EP 185 DI 10.1117/12.160411 PG 11 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BZ45M UT WOS:A1993BZ45M00017 ER PT B AU VAUGHAN, AH KORECHOFF, RP AF VAUGHAN, AH KORECHOFF, RP BE Ruda, MC TI OPTICAL METROLOGY OF THE HUBBLE-SPACE-TELESCOPE SIMULATOR BY MEANS OF HARTMANN TESTS SO OPTICAL ALIGNMENT SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Alignment CY JUL 14-15, 1993 CL SAN DIEGO, 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 0-8194-1245-7 J9 P SOC PHOTO-OPT INS PY 1993 VL 1996 BP 186 EP 192 DI 10.1117/12.160412 PG 7 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BZ45M UT WOS:A1993BZ45M00018 ER PT B AU OVRYN, B HOVENAC, EA AF OVRYN, B HOVENAC, EA BE Cha, SS Trolinger, JD TI COHERENT FORWARD SCATTERING PARTICLE IMAGE VELOCIMETRY - APPLICATION OF POISSON SPOT FOR VELOCITY-MEASUREMENTS IN FLUIDS SO OPTICAL DIAGNOSTICS IN FLUID AND THERMAL FLOW SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Diagnostics in Fluid and Thermal Flow CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LEWIS RES CTR,SVERDRUP TECHNOL INC,CLEVELAND,OH 44135. NR 0 TC 7 Z9 7 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1254-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2005 BP 338 EP 348 DI 10.1117/12.163718 PG 11 WC Engineering, Mechanical; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BZ74U UT WOS:A1993BZ74U00031 ER PT B AU DECKER, AJ AF DECKER, AJ BE Cha, SS Trolinger, JD TI NEURAL NETWORKS FOR CALIBRATION TOMOGRAPHY SO OPTICAL DIAGNOSTICS IN FLUID AND THERMAL FLOW SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Diagnostics in Fluid and Thermal Flow CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 0-8194-1254-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2005 BP 562 EP 569 DI 10.1117/12.163741 PG 8 WC Engineering, Mechanical; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BZ74U UT WOS:A1993BZ74U00052 ER PT B AU WERNET, MP AF WERNET, MP BE Cha, SS Trolinger, JD TI FUZZY-LOGIC PARTICLE TRACKING VELOCIMETRY SO OPTICAL DIAGNOSTICS IN FLUID AND THERMAL FLOW SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optical Diagnostics in Fluid and Thermal Flow CY JUL 14-16, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 12 Z9 12 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1254-6 J9 P SOC PHOTO-OPT INS PY 1993 VL 2005 BP 701 EP 708 DI 10.1117/12.163754 PG 8 WC Engineering, Mechanical; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BZ74U UT WOS:A1993BZ74U00065 ER PT J AU LIU, HK AF LIU, HK TI BIFURCATING OPTICAL-PATTERN RECOGNITION IN PHOTOREFRACTIVE CRYSTALS SO OPTICS LETTERS LA English DT Article AB A new concept and experimental demonstration of a bifurcating optical pattern recognizer that uses a nonlinear gain saturation memory medium such as a high-gain photorefractive crystal are presented. A barium titanate crystal is used as a typical example of the nonlinear medium for the demonstration of the bifurcating optical pattern recognizer. RP LIU, HK (reprint author), JET PROP LAB, PASADENA, CA 91109 USA. NR 9 TC 4 Z9 4 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 USA SN 0146-9592 EI 1539-4794 J9 OPT LETT JI Opt. Lett. PD JAN 1 PY 1993 VL 18 IS 1 BP 60 EP 62 DI 10.1364/OL.18.000060 PG 3 WC Optics SC Optics GA KF111 UT WOS:A1993KF11100021 PM 19798350 ER PT B AU SAWYER, KA DETTMANN, LR VALENTE, TM AF SAWYER, KA DETTMANN, LR VALENTE, TM BE Vukobratovich, D Yoder, PR Genberg, VL TI EVALUATION OF A 60 INCH SPHERE USING OPTICAL-TESTING AND ANALYTICAL METHODS SO OPTOMECHANICAL DESIGN SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Optomechanical Design CY JUL 15-16, 1993 CL SAN DIEGO, CA 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 0-8194-1247-3 J9 P SOC PHOTO-OPT INS PY 1993 VL 1998 BP 21 EP 31 DI 10.1117/12.156627 PG 11 WC Engineering, Mechanical; Optics SC Engineering; Optics GA BZ45N UT WOS:A1993BZ45N00003 ER PT B AU GOORJIAN, PM JOSEPH, RM TAFLOVE, A AF GOORJIAN, PM JOSEPH, RM TAFLOVE, A BE Corkum, PB Perry, MD TI CALCULATIONS OF FEMTOSECOND OPTICAL SOLITONS FROM THE VECTOR NONLINEAR MAXWELLS EQUATIONS SO OSA PROCEEDINGS ON SHORTWAVELENGTH V: PHYSICS WITH INTENSE LASER PULSES SE OPTICAL SOCIETY OF AMERICA PROCEEDINGS LA English DT Proceedings Paper CT 5th Topical Meeting on the Generation of Shortwavelength Radiation: Physics with Intense Laser Pulses CY MAR 29-31, 1993 CL SAN DIEGO, CA SP OPT SOC AMER, USA, OFF SCI RES, US DOE, NATL SCI FDN, USN, OFF NAVAL RES C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 1 Z9 1 U1 0 U2 0 PU OPTICAL SOC AMERICA PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 BN 1-55752-298-7 J9 OSA PROC PY 1993 VL 17 BP 66 EP 69 PG 4 WC Optics; Physics, Fluids & Plasmas SC Optics; Physics GA BA05X UT WOS:A1993BA05X00015 ER PT B AU STECKER, FW AF STECKER, FW BE Fontaine, G TranThanhVan, J TI EXTRAGALACTIC HIGH-ENERGY NEUTRINO AND GAMMA-RAY ASTRONOMY SO PARTICLE ASTROPHYSICS: INTERDISCIPLINARY COLLOQUIUM OF THE COMITE-NATIONAL-DE-LA-RECHERCHE-SCIENTIFIQUE LA English DT Proceedings Paper CT 4th Rencontres-de-Blois on Particle Astrophysics CY JUN 15-20, 1992 CL CHATEAU BLOIS, FRANCE SP COM NATL RECH SCI, INST NATL PHYS NUCL & PHYS PARTICLES, CEA, MINIST RECH & TECHNOL, CONSEIL REG REG CTR, CONSEIL GEN LOIR & CHER, VILLE BLOIS, INFOPRISM, MINOLTA, POULAIN, TAITTINGER C1 NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771. RI Stecker, Floyd/D-3169-2012 NR 0 TC 1 Z9 1 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-133-1 PY 1993 BP 111 EP 122 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB04D UT WOS:A1993BB04D00010 ER PT B AU ROULET, E MOLLERACH, S AF ROULET, E MOLLERACH, S BE Fontaine, G TranThanhVan, J TI AXION SUPERMULTIPLET COSMOLOGY AND LATE BARYOGENESIS SO PARTICLE ASTROPHYSICS: INTERDISCIPLINARY COLLOQUIUM OF THE COMITE-NATIONAL-DE-LA-RECHERCHE-SCIENTIFIQUE LA English DT Proceedings Paper CT 4th Rencontres-de-Blois on Particle Astrophysics CY JUN 15-20, 1992 CL CHATEAU BLOIS, FRANCE SP COM NATL RECH SCI, INST NATL PHYS NUCL & PHYS PARTICLES, CEA, MINIST RECH & TECHNOL, CONSEIL REG REG CTR, CONSEIL GEN LOIR & CHER, VILLE BLOIS, INFOPRISM, MINOLTA, POULAIN, TAITTINGER C1 NASA,FERMILAB ASTROPHYS CTR FERMILAB,BATAVIA,IL 60510. NR 0 TC 0 Z9 0 U1 0 U2 0 PU EDITIONS FRONTIERES PI DREUX PA 7 AVENUE KENNEDY, 28100 DREUX, FRANCE BN 2-86332-133-1 PY 1993 BP 503 EP 506 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BB04D UT WOS:A1993BB04D00043 ER PT B AU HILSENRATH, E HERZIG, H WILLIAMS, DE BRUEGGE, CJ STIEGMAN, AE AF HILSENRATH, E HERZIG, H WILLIAMS, DE BRUEGGE, CJ STIEGMAN, AE BE Wilkerson, GW TI EFFECTS OF SPACE-SHUTTLE FLIGHT ON THE REFLECTANCE CHARACTERISTICS OF DIFFUSERS IN THE NIR, VIS, AND UV SO PASSIVE MATERIALS FOR OPTICAL ELEMENTS II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Passive Materials for Optical Elements II CY JUL 14-15, 1993 CL SAN DIEGO, CA 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 0-8194-1267-8 J9 P SOC PHOTO-OPT INS PY 1993 VL 2018 BP 104 EP 113 DI 10.1117/12.165219 PG 10 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA BA45H UT WOS:A1993BA45H00010 ER PT B AU BRUEGGE, CJ RAINEN, RA LEWIS, DF HSIEH, C PETROY, S CHOMMELOUX, B BEZY, JL AF BRUEGGE, CJ RAINEN, RA LEWIS, DF HSIEH, C PETROY, S CHOMMELOUX, B BEZY, JL BE Wilkerson, GW TI STUDIES ON THERMAL-CONTROL PAINTS FOR USE AS DIFFUSE TARGETS IN THE CALIBRATION OF FLIGHT SENSORS SO PASSIVE MATERIALS FOR OPTICAL ELEMENTS II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Passive Materials for Optical Elements II CY JUL 14-15, 1993 CL SAN DIEGO, 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 0-8194-1267-8 J9 P SOC PHOTO-OPT INS PY 1993 VL 2018 BP 114 EP 124 DI 10.1117/12.165220 PG 11 WC Materials Science, Multidisciplinary; Optics SC Materials Science; Optics GA BA45H UT WOS:A1993BA45H00011 ER PT B AU LECKRONE, DS WAHLGREN, GM JOHANSSON, SG ADELMAN, SJ AF LECKRONE, DS WAHLGREN, GM JOHANSSON, SG ADELMAN, SJ BE Dworetsky, MM Castelli, F Faraggiana, R TI EXPLORING ABUNDANCE AND ISOTOPE ANOMALIES IN CP STARS WITH THE HST/GHRS - HIGH-RESOLUTION UV SPECTROSCOPY OF CHI-LUPI SO PECULIAR VERSUS NORMAL PHENOMENA IN A-TYPE AND RELATED STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 138th International Astronomical Union Colloquium on Peculiar Versus Normal Phenomena in A-Type and Related Stars CY JUL, 1992 CL TRIESTE, ITALY SP INT ASTRON UNION, EUROPEAN ASTRON SOC, NATL COUNCIL RES, UNIV TRIESTE, INTERUNIV REG CTR ASTROPHYS & COSMOL, UNIV TRIESTE, CONSORTIUM DEV RES PHYS INST, INTERDISCIPLINARY LAB NAT & HUMANIST SCI, INFORMATICA SIST ENTI LOCALI, INT SCH ADV STUDY, INT CTR THEORET PHYS, ENTE REG DIRITTO STUDIO 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 0-937707-63-5 J9 ASTR SOC P PY 1993 VL 44 BP 42 EP 59 PG 18 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94T UT WOS:A1993BZ94T00004 ER PT B AU LANZ, T AF LANZ, T BE Dworetsky, MM Castelli, F Faraggiana, R TI SIMILARITIES AND DIFFERENCES BETWEEN MAGNETIC AND NONMAGNETIC CP STARS SO PECULIAR VERSUS NORMAL PHENOMENA IN A-TYPE AND RELATED STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 138th International Astronomical Union Colloquium on Peculiar Versus Normal Phenomena in A-Type and Related Stars CY JUL, 1992 CL TRIESTE, ITALY SP INT ASTRON UNION, EUROPEAN ASTRON SOC, NATL COUNCIL RES, UNIV TRIESTE, INTERUNIV REG CTR ASTROPHYS & COSMOL, UNIV TRIESTE, CONSORTIUM DEV RES PHYS INST, INTERDISCIPLINARY LAB NAT & HUMANIST SCI, INFORMATICA SIST ENTI LOCALI, INT SCH ADV STUDY, INT CTR THEORET PHYS, ENTE REG DIRITTO STUDIO 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 0-937707-63-5 J9 ASTR SOC P PY 1993 VL 44 BP 60 EP 71 PG 12 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94T UT WOS:A1993BZ94T00005 ER PT B AU HUBENY, I LANZ, T AF HUBENY, I LANZ, T BE Dworetsky, MM Castelli, F Faraggiana, R TI MODELING A-TYPE ATMOSPHERES - NLTE MODELS SO PECULIAR VERSUS NORMAL PHENOMENA IN A-TYPE AND RELATED STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 138th International Astronomical Union Colloquium on Peculiar Versus Normal Phenomena in A-Type and Related Stars CY JUL, 1992 CL TRIESTE, ITALY SP INT ASTRON UNION, EUROPEAN ASTRON SOC, NATL COUNCIL RES, UNIV TRIESTE, INTERUNIV REG CTR ASTROPHYS & COSMOL, UNIV TRIESTE, CONSORTIUM DEV RES PHYS INST, INTERDISCIPLINARY LAB NAT & HUMANIST SCI, INFORMATICA SIST ENTI LOCALI, INT SCH ADV STUDY, INT CTR THEORET PHYS, ENTE REG DIRITTO STUDIO C1 UNIV SPACE RES ASSOC,NASA,GSFC,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 0-937707-63-5 J9 ASTR SOC P PY 1993 VL 44 BP 98 EP 112 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94T UT WOS:A1993BZ94T00008 ER PT B AU WAHLGREN, GM LECKRONE, DS JOHANSSON, S ROSBERG, M AF WAHLGREN, GM LECKRONE, DS JOHANSSON, S ROSBERG, M BE Dworetsky, MM Castelli, F Faraggiana, R TI USING HST/GHRS ECHELLE SPECTRA AS TEMPLATES FOR IUE DATA-ANALYSIS SO PECULIAR VERSUS NORMAL PHENOMENA IN A-TYPE AND RELATED STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 138th International Astronomical Union Colloquium on Peculiar Versus Normal Phenomena in A-Type and Related Stars CY JUL, 1992 CL TRIESTE, ITALY SP INT ASTRON UNION, EUROPEAN ASTRON SOC, NATL COUNCIL RES, UNIV TRIESTE, INTERUNIV REG CTR ASTROPHYS & COSMOL, UNIV TRIESTE, CONSORTIUM DEV RES PHYS INST, INTERDISCIPLINARY LAB NAT & HUMANIST SCI, INFORMATICA SIST ENTI LOCALI, INT SCH ADV STUDY, INT CTR THEORET PHYS, ENTE REG DIRITTO STUDIO C1 COMP SCI CORP,GSFC,GHRS SCI TEAM,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 0-937707-63-5 J9 ASTR SOC P PY 1993 VL 44 BP 121 EP 125 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94T UT WOS:A1993BZ94T00010 ER PT B AU LANZ, T HUBENY, I AF LANZ, T HUBENY, I BE Dworetsky, MM Castelli, F Faraggiana, R TI SPECTRAL DIAGNOSES OF CHROMOSPHERES AND WINDS IN A-TYPE STARS SO PECULIAR VERSUS NORMAL PHENOMENA IN A-TYPE AND RELATED STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 138th International Astronomical Union Colloquium on Peculiar Versus Normal Phenomena in A-Type and Related Stars CY JUL, 1992 CL TRIESTE, ITALY SP INT ASTRON UNION, EUROPEAN ASTRON SOC, NATL COUNCIL RES, UNIV TRIESTE, INTERUNIV REG CTR ASTROPHYS & COSMOL, UNIV TRIESTE, CONSORTIUM DEV RES PHYS INST, INTERDISCIPLINARY LAB NAT & HUMANIST SCI, INFORMATICA SIST ENTI LOCALI, INT SCH ADV STUDY, INT CTR THEORET PHYS, ENTE REG DIRITTO STUDIO C1 NASA,GODDARD SPACE FLIGHT CTR,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 0-937707-63-5 J9 ASTR SOC P PY 1993 VL 44 BP 517 EP 527 PG 11 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94T UT WOS:A1993BZ94T00065 ER PT B AU SHORE, SN AF SHORE, SN BE Dworetsky, MM Castelli, F Faraggiana, R TI THE MAGNETOSPHERES OF THE HELIUM PECULIAR STARS OF THE UPPER MAIN-SEQUENCE SO PECULIAR VERSUS NORMAL PHENOMENA IN A-TYPE AND RELATED STARS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 138th International Astronomical Union Colloquium on Peculiar Versus Normal Phenomena in A-Type and Related Stars CY JUL, 1992 CL TRIESTE, ITALY SP INT ASTRON UNION, EUROPEAN ASTRON SOC, NATL COUNCIL RES, UNIV TRIESTE, INTERUNIV REG CTR ASTROPHYS & COSMOL, UNIV TRIESTE, CONSORTIUM DEV RES PHYS INST, INTERDISCIPLINARY LAB NAT & HUMANIST SCI, INFORMATICA SIST ENTI LOCALI, INT SCH ADV STUDY, INT CTR THEORET PHYS, ENTE REG DIRITTO STUDIO C1 COMP SCI CORP,GODDARD SPACE FLIGHT CTR,GHRS SCI TEAM,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 0-937707-63-5 J9 ASTR SOC P PY 1993 VL 44 BP 528 EP 540 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ94T UT WOS:A1993BZ94T00066 ER PT J AU HECHT, H AF HECHT, H TI JUDGING ROLLING WHEELS - DYNAMIC AND KINEMATIC ASPECTS OF ROTATION - TRANSLATION COUPLING SO PERCEPTION LA English DT Article ID PERCEPTION AB Four experiments were carried out to investigate observers' abilities to judge rolling motions. The experiments were designed to assess whether two important aspects of such motions are appreciated: the kinematic coupling of rotation and translation, and the dynamic effects of gravity. Different motion contexts of rolling wheels were created using computer-generated displays. The first experiment involved wheels rolling down an inclined plane. Observers spontaneously appreciated the anomaly of wheels that failed to accelerate, but they were not able to differentiate between different acceleration functions. Moreover, their judgments were almost exclusively based on the translation component of the rolling motion, neglecting the rotation component. In a second experiment it was found that observers could accurately estimate the perimeter of various objects. Thus, their inability to consider rotation information is not attributable to misperceptions of the geometry of wheels. In a third experiment the finding that rolling wheels appear to overrotate was replicated; however, findings from this experiment also showed, together with those from a fourth experiment, that observers are able to make very accurate judgments about translation-rotation coupling in rolling wheels when information is provided about the orientation of the wheel and the texture of the surface on which it rolls. RP HECHT, H (reprint author), NASA,AMES RES CTR,MAIL STOP 262-3,MOFFETT FIELD,CA 94035, USA. RI Hecht, Heiko/H-3106-2011 NR 14 TC 7 Z9 7 U1 0 U2 2 PU PION LTD PI LONDON PA 207 BRONDESBURY PARK, LONDON, ENGLAND NW2 5JN SN 0301-0066 J9 PERCEPTION JI Perception PY 1993 VL 22 IS 8 BP 917 EP 928 DI 10.1068/p220917 PG 12 WC Ophthalmology; Psychology; Psychology, Experimental SC Ophthalmology; Psychology GA MY825 UT WOS:A1993MY82500004 PM 8190595 ER PT J AU NEMIRE, K COHEN, MM AF NEMIRE, K COHEN, MM TI VISUAL AND SOMATESTHETIC INFLUENCES ON POSTURAL ORIENTATION IN THE MEDIAN PLANE SO PERCEPTION & PSYCHOPHYSICS LA English DT Article ID FRAME TEST; EYE LEVEL; ROD; PITCH; TILT; MOTION AB We investigated optic and somesthetic contributions to perceived body orientation in the pitch dimension. In a within-subject factorial design, each of 12 subjects attempted to set his/her body erect or 45-degrees back from erect while restrained in a movable bed surrounded by an adjustable box. The box provided a visual environment consisting of either a grid pattern, two luminous lines, or complete darkness. Both the grid pattern and the luminous lines were effective at biasing settings of body position when the box was pitched; the pitched grid was more effective than the pitched lines. Although the pitch of the box influenced orientation to both goals, the effect was greater for the diagonal goal than for the erect goal. We present a model of postural orientation in the median plane that involves vestibular, somatosensory, and visual inputs. RP NEMIRE, K (reprint author), NASA,AMES RES CTR,MAIL STOP 262-2,MOFFETT FIELD,CA 94035, USA. NR 67 TC 23 Z9 23 U1 0 U2 3 PU PSYCHONOMIC SOC INC PI AUSTIN PA 1710 FORTVIEW RD, AUSTIN, TX 78704 SN 0031-5117 J9 PERCEPT PSYCHOPHYS JI Percept. Psychophys. PD JAN PY 1993 VL 53 IS 1 BP 106 EP 116 DI 10.3758/BF03211719 PG 11 WC Psychology; Psychology, Experimental SC Psychology GA LE145 UT WOS:A1993LE14500010 PM 8433899 ER PT S AU VANDERSANDE, JW ZOLTAN, A OLSON, JR POHL, RO ANTHONY, TR BANHOLZER, WF AF VANDERSANDE, JW ZOLTAN, A OLSON, JR POHL, RO ANTHONY, TR BANHOLZER, WF BE Meissner, M Pohl, RO TI THERMAL-CONDUCTIVITY OF DIAMOND BETWEEN 170-K AND 1200-K AND THE ISOTOPE EFFECT SO PHONON SCATTERING IN CONDENSED MATTER VII: PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE SE Springer Series in Solid-State Sciences LA English DT Proceedings Paper CT 7th International Conference on Phonon Scattering in Condensed Matter CY AUG 03-07, 1992 CL CORNELL UNIV, ITHACA, NY SP INT UNION PURE & APPL PHYS, NATL SCI FDN, USA RES OFF, USN OFF NAVAL RES, CORNELL UNIV, VICE PRESIDENT RES, CORNELL UNIV, MAT SCI CTR, CORNELL UNIV, PHYS DEP, CORNELL UNIV, LAB ATOM & SOLID STATE PHYS HO CORNELL UNIV C1 JET PROP LAB, PASADENA, CA 91109 USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU SPRINGER-VERLAG BERLIN PI BERLIN PA HEIDELBERGER PLATZ 3, D-14197 BERLIN, GERMANY SN 0171-1873 BN 3-540-56395-4 J9 SPRINGER SER SOLID-S PY 1993 VL 112 BP 35 EP 36 PG 2 WC Physics, Condensed Matter SC Physics GA BB68D UT WOS:A1993BB68D00012 ER PT S AU VANDERSANDE, JW FLEURIAL, JP VINING, CB BEATY, J ROLFE, J KLEMENS, P AF VANDERSANDE, JW FLEURIAL, JP VINING, CB BEATY, J ROLFE, J KLEMENS, P BE Meissner, M Pohl, RO TI PHONON-SCATTERING BY ULTRAFINE PARTICULATES IN SIGE ALLOYS AT HIGH-TEMPERATURES SO PHONON SCATTERING IN CONDENSED MATTER VII: PROCEEDINGS OF THE SEVENTH INTERNATIONAL CONFERENCE SE SPRINGER SERIES IN SOLID-STATE SCIENCES LA English DT Proceedings Paper CT 7th International Conference on Phonon Scattering in Condensed Matter CY AUG 03-07, 1992 CL CORNELL UNIV, ITHACA, NY SP INT UNION PURE & APPL PHYS, NATL SCI FDN, USA RES OFF, USN OFF NAVAL RES, CORNELL UNIV, VICE PRESIDENT RES, CORNELL UNIV, MAT SCI CTR, CORNELL UNIV, PHYS DEP, CORNELL UNIV, LAB ATOM & SOLID STATE PHYS HO CORNELL UNIV C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 1 PU SPRINGER-VERLAG BERLIN PI BERLIN 33 PA HEIDELBERGER PLATZ 3, W-1000 BERLIN 33, GERMANY SN 0171-1873 BN 3-540-56395-4 J9 SPRINGER SERIES SOLI PY 1993 VL 112 BP 44 EP 45 PG 2 WC Physics, Condensed Matter SC Physics GA BB68D UT WOS:A1993BB68D00016 ER PT B AU DOWNIE, JD AF DOWNIE, JD BE Horner, JL Javidi, B Kowel, ST Miceli, WJ TI REDUCED CLASSIFICATION ERROR-PROBABILITY WITH TERNARY CORRELATION FILTERS SO PHOTONICS FOR PROCESSORS, NEURAL NETWORKS, AND MEMORIES SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonics for Processors, Neural Networks, and Memories CY JUL 12-15, 1993 CL SAN DIEGO, CA 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 0-8194-1275-9 J9 P SOC PHOTO-OPT INS PY 1993 VL 2026 BP 17 EP 28 DI 10.1117/12.163573 PG 12 WC Computer Science, Artificial Intelligence; Optics SC Computer Science; Optics GA BZ81K UT WOS:A1993BZ81K00002 ER PT B AU CHAO, TH HEGBLOM, E LAU, B STONER, WW MICELI, WJ AF CHAO, TH HEGBLOM, E LAU, B STONER, WW MICELI, WJ BE Horner, JL Javidi, B Kowel, ST Miceli, WJ TI OPTOELECTRONICALLY IMPLEMENTED NEURAL-NETWORK WITH A WAVELET PREPROCESSOR SO PHOTONICS FOR PROCESSORS, NEURAL NETWORKS, AND MEMORIES SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Photonics for Processors, Neural Networks, and Memories CY JUL 12-15, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,CTR SPACE MICROELECTR TECHNOL,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 0-8194-1275-9 J9 P SOC PHOTO-OPT INS PY 1993 VL 2026 BP 472 EP 482 DI 10.1117/12.163596 PG 11 WC Computer Science, Artificial Intelligence; Optics SC Computer Science; Optics GA BZ81K UT WOS:A1993BZ81K00047 ER PT J AU SMERNOFF, DT GALE, J MACLER, BA REUVENI, J AF SMERNOFF, DT GALE, J MACLER, BA REUVENI, J TI INHIBITION OF PHOTOSYNTHESIS IN DUCKWEED BY ELEVATED CO2 CONCENTRATION IS RAPID AND IS NOT OFFSET BY A TEMPERATURE-INDUCED INCREASE IN METABOLIC-RATE SO PHOTOSYNTHETICA LA English DT Article ID HIGH ATMOSPHERIC CO2; LEMNA-GIBBA; DESERT CONDITIONS; CARBON-DIOXIDE; ACCLIMATION; ENRICHMENT; GROWTH; PHOTORESPIRATION; CARBOXYLASE; CULTIVATION AB The rates of net photosynthesis (P(N)), respiration and growth of Lemna gibba L. were measured as functions of time across ranges of temperature, irradiance and carbon dioxide concentrations. P(N) on an area basis increased with temperature up to 30-degrees-C but decreased dramatically with a few hours of exposure to elevated CO2, when reported on a dry mass basis. Reductions in the apparent quantum efficiency, photosynthetic capacity and the affinity of ribulose- 1,5-bisphosphate carboxylase/oxygenase for CO2 were observed for plants grown at elevated CO2. Starch concentration was not significantly affected by elevated CO2. Although elevated temperature increased metabolic activity, it only partially alleviated the inhibition of P(N). L. gibba exhibits a characteristic C3-type response to elevated CO2 and the methodology described is useful for further elucidating the mechanism of photosynthetic acclimation to elevated CO2. C1 HEBREW UNIV JERUSALEM,INST LIFE SCI,IL-91904 JERUSALEM,ISRAEL. RP SMERNOFF, DT (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 29 TC 5 Z9 5 U1 2 U2 9 PU INST EXPERIMENTAL BOTANY, ACAD SCI CZECH REPUBLIC PI PRAGUE 6 PA NA KARLOVCE 1A, PRAGUE 6, CZECH REPUBLIC CS-160 00 SN 0300-3604 J9 PHOTOSYNTHETICA JI Photosynthetica PY 1993 VL 28 IS 1 BP 17 EP 28 PG 12 WC Plant Sciences SC Plant Sciences GA LW193 UT WOS:A1993LW19300002 ER PT J AU ROZELL, JM BOOK, GW CUNNINGHAM, J GLORIOSO, C VLASSE, M GOLBEN, JP AF ROZELL, JM BOOK, GW CUNNINGHAM, J GLORIOSO, C VLASSE, M GOLBEN, JP TI A POWDER X-RAY-DIFFRACTION AND ELECTRICAL STUDY OF DY(BA2-XSRX)CU3O7-DELTA SUPERCONDUCTING CUPRATES SO PHYSICA C LA English DT Article ID CU-O; COMPOUND; SYSTEM; OXIDES AB A series of Dy(Ba2-xSrx)Cu3O7-delta compounds (0 less-than-or-equal-to x less-than-or-equal-to 1) were prepared by solid state reaction. As determined by powder X-ray diffraction this Dy based series had an orthorhombic crystal structure throughout the substitutional range studied. The crystal lattice parameters decreased with increased Sr substitution. VSM measurements showed that the Dy series was superconducting with T(c)s in the range 68 to 88 K. Samples with high Sr content (0.6 less-than-or-equal-to x less-than-or-equal-to 1.0) and extended sintering times had low electrical resistivities and sharp superconducting transitions (DELTAT(c) less-than-or-equal-to 1.0 K) in the 80-85 K range. C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. RP ROZELL, JM (reprint author), NW STATE UNIV,DEPT MATH & PHYS SCI,DIV CHEM,NATCHITOCHES,LA 71497, USA. NR 16 TC 8 Z9 8 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0921-4534 J9 PHYSICA C JI Physica C PD JAN 1 PY 1993 VL 204 IS 3-4 BP 384 EP 388 DI 10.1016/0921-4534(93)91023-O PG 5 WC Physics, Applied SC Physics GA KG089 UT WOS:A1993KG08900020 ER PT J AU LECKRONE, DS SUGAR, J WEISS, A AF LECKRONE, DS SUGAR, J WEISS, A TI THE 4TH INTERNATIONAL-COLLOQUIUM ON ATOMIC SPECTRA AND OSCILLATOR-STRENGTHS FOR ASTROPHYSICAL AND LABORATORY PLASMAS - GAITHERSBURG, MD, USA, SEPTEMBER 14-17, 1992 - FOREWORD SO PHYSICA SCRIPTA LA English DT Editorial Material C1 NIST,GAITHERSBURG,MD 20899. RP LECKRONE, DS (reprint author), NASA,GODDARD SPACE FLIGHT CTR,CODE 681,GREENBELT,MD 20771, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ROYAL SWEDISH ACAD SCIENCES PI STOCKHOLM PA PUBL DEPT BOX 50005, S-104 05 STOCKHOLM, SWEDEN SN 0281-1847 J9 PHYS SCRIPTA JI Phys. Scr. PY 1993 VL T47 BP 3 EP 3 DI 10.1088/0031-8949/1993/T47/E01 PG 1 WC Physics, Multidisciplinary SC Physics GA LQ507 UT WOS:A1993LQ50700001 ER PT J AU CARPENTER, KG AF CARPENTER, KG TI ATOMIC DATA NEEDS FOR THE ANALYSIS OF THE ULTRAVIOLET-SPECTRUM OF COOL STARS SO PHYSICA SCRIPTA LA English DT Article; Proceedings Paper CT 4TH INTERNATIONAL COLLOQUIUM ON ATOMIC SPECTRA AND OSCILLATOR STRENGTHS FOR ASTROPHYSICAL AND LABORATORY PLASMAS CY SEP 14-17, 1992 CL NIST, GAITHERSBURG, MD HO NIST AB A brief introduction to the UV spectra of cool stars is given, followed by a review of Astronomical Observatories and Instruments which are capable of acquiring UV spectral data on cool stars. Examples of observational data are presented, along with a description of typical analysis performed on such data. The basic atomic data needed to perform these analysis are summarized, with the most important UV multiplets or transitions of the most relevant ions identified. RP CARPENTER, KG (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,CODE 681,GREENBELT,MD 20771, USA. RI Carpenter, Kenneth/D-4740-2012 NR 14 TC 0 Z9 0 U1 0 U2 0 PU ROYAL SWEDISH ACAD SCIENCES PI STOCKHOLM PA PUBL DEPT BOX 50005, S-104 05 STOCKHOLM, SWEDEN SN 0281-1847 J9 PHYS SCRIPTA JI Phys. Scr. PY 1993 VL T47 BP 139 EP 142 DI 10.1088/0031-8949/1993/T47/022 PG 4 WC Physics, Multidisciplinary SC Physics GA LQ507 UT WOS:A1993LQ50700024 ER PT J AU LECKRONE, DS JOHANSSON, S WAHLGREN, GM ADELMAN, SJ AF LECKRONE, DS JOHANSSON, S WAHLGREN, GM ADELMAN, SJ TI HIGH-RESOLUTION UV STELLAR SPECTROSCOPY WITH THE HST GHRS, CHALLENGES AND OPPORTUNITIES FOR ATOMIC PHYSICS SO PHYSICA SCRIPTA LA English DT Article; Proceedings Paper CT 4TH INTERNATIONAL COLLOQUIUM ON ATOMIC SPECTRA AND OSCILLATOR STRENGTHS FOR ASTROPHYSICAL AND LABORATORY PLASMAS CY SEP 14-17, 1992 CL NIST, GAITHERSBURG, MD HO NIST ID B-STAR AB The Goddard High Resolution Spectrograph (GHRS) on the Hubble Space Telescope (HST) is producing ultraviolet spectra of unprecedented resolution and photometric quality. We illustrate this with observations of the ultra-sharp-lined, chemically peculiar B-type star, chi Lupi. The photosphere of this star is rich in heavy elements, and its UV spectrum is replete with transitions of species not commonly observed in astrophysical spectra. It is an excellent ''laboratory'' for atomic spectroscopy. Wavelengths measured with the GHRS are accurate to +/-1-2 mangstrom, requiring Fourier-Transform-Spectrometer (FTS) quality laboratory wavelengths for line identifications and spectrum synthesis. We are able to discern evidence of isotope shifts/hyperfine splitting in lines of Hg, Pt, and possibly other species. Kurucz's comprehensive calculations of transition probabilities for the iron-group and other elements provides a reasonable starting point for theoretical spectrum synthesis. However, we have found evidence of large systematic errors in his data base for transitions from particular energy levels in Fe II, Cr II, Co II, and other ions, and its coverage of elements outside the range 20 less-than-or-equal-to z less-than-or-equal-to 28 is insufficient. We have relied on the direct participation of many atomic spectroscopists from around the world, who have provided new laboratory measurements and theoretical calculations, enabling us to accurately interpret these observations. C1 LUND UNIV,DEPT PHYS,S-22362 LUND,SWEDEN. NASA,GODDARD SPACE FLIGHT CTR,COMP SCI CORP,ASTRON PROGRAMS,GREENBELT,MD 20771. THE CITADEL,DEPT PHYS,CHARLESTON,SC 29409. RP LECKRONE, DS (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,CODE 681,GREENBELT,MD 20771, USA. NR 14 TC 64 Z9 64 U1 0 U2 0 PU ROYAL SWEDISH ACAD SCIENCES PI STOCKHOLM PA PUBL DEPT BOX 50005, S-104 05 STOCKHOLM, SWEDEN SN 0281-1847 J9 PHYS SCRIPTA JI Phys. Scr. PY 1993 VL T47 BP 149 EP 156 DI 10.1088/0031-8949/1993/T47/024 PG 8 WC Physics, Multidisciplinary SC Physics GA LQ507 UT WOS:A1993LQ50700026 ER PT J AU DRACHMAN, RJ AF DRACHMAN, RJ TI RYDBERG STATES OF HELIUM - SOME FURTHER SMALL CORRECTIONS SO PHYSICAL REVIEW A LA English DT Note ID ATOM AB The optical-potential method based on the Feshbach projection-operator formalism has been successfully applied to the computation of fine-structure splittings between highly excited levels of helium [R. J. Drachman, Phys. Rev. A 26, 1228 (1982)]. In this paper, I report additional terms in the nonrelativistic effective potential decreasing as x-9 and x-10, where x is the distance of the outer electron from the He+ core. They involve higher-multipole distortions of the wave function of the core electron, higher nonadiabatic corrections, and perturbation theory up to fourth order in the electrostatic potential. Energy shifts due to these terms are compared with the extremely accurate variational results of Drake [Phys. Rev. Lett. 65, 2769 (1990)]. RP DRACHMAN, RJ (reprint author), NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771, USA. NR 22 TC 14 Z9 14 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1050-2947 J9 PHYS REV A JI Phys. Rev. A PD JAN PY 1993 VL 47 IS 1 BP 694 EP 697 DI 10.1103/PhysRevA.47.694 PG 4 WC Optics; Physics, Atomic, Molecular & Chemical SC Optics; Physics GA KG725 UT WOS:A1993KG72500089 ER PT J AU SCHLOSSER, H FERRANTE, J AF SCHLOSSER, H FERRANTE, J TI GLOBAL EXPRESSION FOR REPRESENTING COHESIVE-ENERGY CURVES .2. SO PHYSICAL REVIEW B LA English DT Note ID ULTRASONIC PARAMETERS; BORN MODEL; HALIDES AB In paper I [Phys. Rev. B 44, 9696 (1991)] we showed that the R dependence of the cohesive energy of partially ionic solids may be characterized by a two-term energy relationship consisting of a Coulomb term arising from the charge transfer, deltaZ, and a scaled universal energy function, E*(a*), which accounts for the partially covalent character of the bond and for repulsion between the atomic cores for small R; a* is a scaled length. In paper I the normalized cohesive-energy curves of NaCl-structure alkali-halide crystals were generated with this expression. In this paper we generate the cohesive-energy curves of several families of partially ionic solids with different crystal structures and differing degrees of ionicity. These include the CsCl-structure Cs halides, and the Tl and Ag halides, which have weaker ionic bonding than the alkali halides, and which have the CsCl and NaCl structures, respectively. The cohesive-energy-curve parameters are then used to generate theoretical isothermal compression curves for the Li, Na, K, Cs, and Ag halides. We find good agreement with the available experimental compression data. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP SCHLOSSER, H (reprint author), CLEVELAND STATE UNIV,DEPT PHYS,CLEVELAND,OH 44115, USA. NR 16 TC 6 Z9 7 U1 1 U2 2 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD JAN 1 PY 1993 VL 47 IS 2 BP 1073 EP 1076 DI 10.1103/PhysRevB.47.1073 PG 4 WC Physics, Condensed Matter SC Physics GA KG728 UT WOS:A1993KG72800057 ER PT J AU NOEVER, DA AF NOEVER, DA TI HIMALAYAN SANDPILES SO PHYSICAL REVIEW E LA English DT Note ID SELF-ORGANIZED CRITICALITY AB Himalayan avalanches are examined for agreement with power-law behavior between frequency of outfall and rock volume. The data support a scaling state beyond the size ranges in which corresponding sandpile experiments have suffered from finite-size effects. Large-scale data (12 orders of magnitude in rock volume) additionally suggest a possible role for the numerically predicted ''snowball effects'' of large rocks triggering more net dislodging events. RP NOEVER, DA (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,ES-76,HUNTSVILLE,AL 35812, USA. NR 10 TC 42 Z9 44 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 1063-651X J9 PHYS REV E JI Phys. Rev. E PD JAN PY 1993 VL 47 IS 1 BP 724 EP 725 DI 10.1103/PhysRevE.47.724 PG 2 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA KY134 UT WOS:A1993KY13400086 ER PT B AU THOMAS, RJ NEUPERT, WM THOMPSON, WT AF THOMAS, RJ NEUPERT, WM THOMPSON, WT BE Linsky, JF Serio, S TI CALIBRATED SOLAR EUV SPECTRUM FROM SERTS SO PHYSICS OF SOLAR AND STELLAR CORONAE: G.S VAIANA MEMORIAL SYMPOSIUM SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT G S Vaiana Memorial Symposium on Physics of Solar and Stellar Coronae CY JUN 22-26, 1992 CL PALERMO, ITALY SP INT ASTRON UNION DE SOLAR; EUV; SPECTRUM C1 NASA,GODDARD SPACE FLIGHT CTR,ASTRON & SOLAR PHYS LAB,GREENBELT,MD 20771. RI Thompson, William/D-7376-2012 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 0-7923-2346-7 J9 ASTROPHYS SPACE SC L PY 1993 VL 184 BP 195 EP 198 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ63Z UT WOS:A1993BZ63Z00023 ER PT B AU DRAKE, SA AF DRAKE, SA BE Linsky, JF Serio, S TI RADIO-EMISSION FROM CORONAL-TYPE STARS SO PHYSICS OF SOLAR AND STELLAR CORONAE: G.S VAIANA MEMORIAL SYMPOSIUM SE ASTROPHYSICS AND SPACE SCIENCE LIBRARY LA English DT Proceedings Paper CT G S Vaiana Memorial Symposium on Physics of Solar and Stellar Coronae CY JUN 22-26, 1992 CL PALERMO, ITALY SP INT ASTRON UNION DE RADIO CONTINUUM, STARS; STARS, CORONAE C1 NASA,GODDARD SPACE FLIGHT CTR,HEASARC,GREENBELT,MD 20771. 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 0-7923-2346-7 J9 ASTROPHYS SPACE SC L PY 1993 VL 184 BP 393 EP 400 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BZ63Z UT WOS:A1993BZ63Z00056 ER PT B AU SRIVASTAVA, KM TSURUTANI, BT GOLDSTEIN, BE AF SRIVASTAVA, KM TSURUTANI, BT GOLDSTEIN, BE BE Gombosi, TI TI PITCH ANGLE SCATTERING OF COMETARY IONS DUE TO MHD TURBULENCE GENERATED BY OBLIQUELY PROPAGATING NONLINEAR MAGNETOSONIC WAVES SO PLASMA ENVIRONMENTS OF NON-MAGNETIC PLANETS SE COSPAR COLLOQUIA SERIES LA English DT Proceedings Paper CT 4th COSPAR Colloquium on Plasma Environments of Non-Magnetic Planets CY AUG 24-27, 1992 CL ANN ARBOR, MI SP INT ASSOC GEOMAGNETISM & AERON, INT ASTRON UNION, NATL AERONAUT & SPACE ADM, SOLAR SYST EXPLORAT DIV, UNIV MICHIGAN, COLL ENGN, COMM SPACE RES C1 JET PROP LAB,PASADENA,CA 91109. 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 0-08-042333-7 J9 COSPAR COLL PY 1993 VL 4 BP 69 EP 74 PG 6 WC Geosciences, Multidisciplinary SC Geology GA BC22V UT WOS:A1993BC22V00009 ER PT B AU LAAKSO, H AGGSON, T SLAVIN, J GRARD, R PEDERSEN, A SCHWINGENSCHUH, K AF LAAKSO, H AGGSON, T SLAVIN, J GRARD, R PEDERSEN, A SCHWINGENSCHUH, K BE Gombosi, TI TI CURRENT LAYERS IN A COMETARY ENVIRONMENT SO PLASMA ENVIRONMENTS OF NON-MAGNETIC PLANETS SE COSPAR COLLOQUIA SERIES LA English DT Proceedings Paper CT 4th COSPAR Colloquium on Plasma Environments of Non-Magnetic Planets CY AUG 24-27, 1992 CL ANN ARBOR, MI SP INT ASSOC GEOMAGNETISM & AERON, INT ASTRON UNION, NATL AERONAUT & SPACE ADM, SOLAR SYST EXPLORAT DIV, UNIV MICHIGAN, COLL ENGN, COMM SPACE RES C1 NASA,GODDARD SPACE FLIGHT CTR,EXTRATERR PHYS LAB,GREENBELT,MD 20771. RI Slavin, James/H-3170-2012 OI Slavin, James/0000-0002-9206-724X 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 0-08-042333-7 J9 COSPAR COLL PY 1993 VL 4 BP 113 EP 119 PG 7 WC Geosciences, Multidisciplinary SC Geology GA BC22V UT WOS:A1993BC22V00018 ER PT B AU SLAVIN, J VERIGIN, M GRINGAUZ, K KOTOVA, G STAHARA, S SPREITER, J RIEDLER, W SCHWINGENSCHUH, K ROSENBAUER, H LIVI, S AF SLAVIN, J VERIGIN, M GRINGAUZ, K KOTOVA, G STAHARA, S SPREITER, J RIEDLER, W SCHWINGENSCHUH, K ROSENBAUER, H LIVI, S BE Gombosi, TI TI THE SOLAR WIND INTERACTION WITH MARS - PHOBOS-2 BOW SHOCK OBSERVATIONS ON 24 MARCH 1989 SO PLASMA ENVIRONMENTS OF NON-MAGNETIC PLANETS SE COSPAR COLLOQUIA SERIES LA English DT Proceedings Paper CT 4th COSPAR Colloquium on Plasma Environments of Non-Magnetic Planets CY AUG 24-27, 1992 CL ANN ARBOR, MI SP INT ASSOC GEOMAGNETISM & AERON, INT ASTRON UNION, NATL AERONAUT & SPACE ADM, SOLAR SYST EXPLORAT DIV, UNIV MICHIGAN, COLL ENGN, COMM SPACE RES C1 NASA,GODDARD SPACE FLIGHT CTR,GSFC,EXTRATERR PHYS LAB,GREENBELT,MD 20771. RI Slavin, James/H-3170-2012 OI Slavin, James/0000-0002-9206-724X NR 0 TC 7 Z9 7 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB BN 0-08-042333-7 J9 COSPAR COLL PY 1993 VL 4 BP 279 EP 283 PG 5 WC Geosciences, Multidisciplinary SC Geology GA BC22V UT WOS:A1993BC22V00041 ER PT J AU JENSEN, BJ HERGENROTHER, PM NWOKOGU, G AF JENSEN, BJ HERGENROTHER, PM NWOKOGU, G TI POLYIMIDES WITH PENDENT ETHYNYL GROUPS SO POLYMER LA English DT Article DE POLYIMIDE; DIAMINE; PENDENT GROUPS; SYNTHESIS; ETHYNYL GROUPS; CROSS-LINKING; COPOLYMERS; CHARACTERIZATION; FILMS AB Three novel diamines containing pendent ethynyl, hexynyl and phenylethynyl groups were synthesized and used to prepare polymers and copolymers. When heated to 250-350-degrees-C, the ethynyl groups react to form crosslinks. After curing, the homopolymers were brittle owing to the high crosslink density. Copolymers prepared using 10 mol% ethynyl-containing diamine and 90 mol% of diamines with no ethynyl groups were relatively tough, forming creasible films. After a thermal cure, the copolymers became insoluble and exhibited high T(g) values and good thin film properties. C1 HAMPTON UNIV,HAMPTON,VA 23668. RP JENSEN, BJ (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23665, USA. NR 8 TC 39 Z9 39 U1 1 U2 4 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0032-3861 J9 POLYMER JI Polymer PY 1993 VL 34 IS 3 BP 630 EP 635 DI 10.1016/0032-3861(93)90562-O PG 6 WC Polymer Science SC Polymer Science GA KM388 UT WOS:A1993KM38800029 ER PT J AU HERGENROTHER, PM SMITH, JG CONNELL, JW AF HERGENROTHER, PM SMITH, JG CONNELL, JW TI SYNTHESIS AND PROPERTIES OF POLY(ARYLENE ETHER BENZIMIDAZOLE)S SO POLYMER LA English DT Article; Proceedings Paper CT SYMP ON ADVANCES IN POLYMER MATRIX-BASED COMPOSITES, AT THE MEETING OF THE AMERICAN CHEMICAL SOC CY APR, 1992 CL SAN FRANCISCO, CA SP AMER CHEM SOC, DIV POLYM CHEM, AMER CHEM SOC, DIV POLYM MAT, SCI & ENGN DE POLY(ARYLENE ETHER)S; POLYBENZIMIDAZOLES; HIGH-TEMPERATURE POLYMERS; FILMS; ADHESIVES; COMPOSITES ID POLYMERIZATION; POLYMERS AB Poly(arylene ether benzimidazole)s were prepared by the aromatic nucleophilic displacement reaction of three new bis[(4-hydroxyphenyl)benzimidazole] compounds with activated aromatic difluoro compounds in N,N-dimethylacetamide at 155-degrees-C in the presence of anhydrous potassium carbonate. The polymers exhibited glass transition temperatures ranging from 264 to 352-degrees-C and inherent viscosities from 0.79 to 1.99 dl g-1. Unoriented thin films exhibited tensile strengths, moduli and elongations at break at 23-degrees-C of 121 157 MPa, 3.7-4.5 GPa and 6-18%, respectively. In most cases the films exhibited 50-60% retention of 23-degrees-C tensile properties when tested at 232-degrees-C. Based on preliminary evaluation, one polymer was prepared at several different controlled molecular weights and end-capped with a monofunctional benzimidazole compound. The polymer with a calculated number-average molecular weight of approximately 9700 g mol-1 exhibited improved processability without significantly reducing thin-film properties. Composite specimens fabricated at 360-degrees-C under 1.4 MPa for 1 h exhibited good flexural and compressive propeties at 23-degrees-C and excellent retention of flexural strength and modulus at 232-degrees-C. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 39 TC 26 Z9 27 U1 3 U2 13 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0032-3861 J9 POLYMER JI Polymer PY 1993 VL 34 IS 4 BP 856 EP 865 DI 10.1016/0032-3861(93)90374-J PG 10 WC Polymer Science SC Polymer Science GA KN323 UT WOS:A1993KN32300029 ER PT J AU WU, KW WICKRAMASINGHE, DT AF WU, KW WICKRAMASINGHE, DT TI A STUDY ON THE PERIOD DISTRIBUTION OF MAGNETIC CATACLYSMIC VARIABLES SO PROCEEDINGS ASTRONOMICAL SOCIETY OF AUSTRALIA LA English DT Article AB We use Monte Carlo simulations of the period distribution of magnetic cataclysmic variables to show that the synchronised AM Herculis-type systems and the asynchronous Intermediate Polars are essentially unrelated systems following different evolutionary scenarios. C1 UNIV SYDNEY,THEORET ASTROPHYS RES CTR,SYDNEY,NSW 2006,AUSTRALIA. AUSTRALIAN NATL UNIV,DEPT MATH,CANBERRA,ACT 2600,AUSTRALIA. RP WU, KW (reprint author), NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB ES65,HUNTSVILLE,AL 35812, USA. NR 11 TC 0 Z9 0 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 0066-9997 J9 P ASTRON SOC AUST JI Proc. Astron. Soc. Aust. PY 1993 VL 10 IS 4 BP 325 EP 326 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA MX244 UT WOS:A1993MX24400011 ER PT B AU OVERTON, E HAMMOUD, AN BAUMANN, ED MYERS, IT AF OVERTON, E HAMMOUD, AN BAUMANN, ED MYERS, IT GP IEEE TI THERMAL AGING EFFECTS ON THE ELECTRICAL-PROPERTIES OF FILM AND CERAMIC CAPACITORS SO PROCEEDINGS: ELECTRICAL ELECTRONICS INSULATION CONFERENCE AND ELECTRICAL MANUFACTURING & COIL WINDING CONFERENCE LA English DT Proceedings Paper CT Electrical Electronics Insulation Conference and Electrical Manufacturing and Coil Winding Conference CY OCT 04-07, 1993 CL ROSEMONT, IL SP IEEE, INT COIL SINDING ASSOC INC, NATL ELECT MANUFACTURERS ASSOC, ELECT ELECTR INSULAT CONF C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 1 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-0847-6 PY 1993 BP 201 EP 205 DI 10.1109/EEIC.1993.631046 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BZ53Y UT WOS:A1993BZ53Y00035 ER PT J AU WHITTLESEY, A AF WHITTLESEY, A GP INSTITUTE OF ENVIRONM SCI TI SYSTEM ELECTROSTATIC DISCHARGE TESTING FOR SPACE CHARGING CAUSED ESD EVENTS SO PROCEEDINGS OF THE 14TH AEROSPACE TESTING SEMINAR LA English DT Proceedings Paper CT 14th Aerospace Testing Seminar CY MAR 09-11, 1993 CL MANHATTAN BEACH, CA SP INST ENVIRONM SCI, AEROSPACE CORP 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 PY 1993 BP 1 EP 4 PG 4 WC Engineering, Aerospace SC Engineering GA BA50F UT WOS:A1993BA50F00001 ER PT J AU FU, J LARSON, T AF FU, J LARSON, T GP INSTITUTE OF ENVIRONM SCI TI MARS OBSERVER SYSTEM THERMAL VACUUM TEST AND ITS COST-SAVING APPROACH SO PROCEEDINGS OF THE 14TH AEROSPACE TESTING SEMINAR LA English DT Proceedings Paper CT 14th Aerospace Testing Seminar CY MAR 09-11, 1993 CL MANHATTAN BEACH, CA SP INST ENVIRONM SCI, AEROSPACE CORP DE MARS OBSERVER (MO); THERMAL VACUUM TEST; SYSTEM TEST; COST SAVING; SPACECRAFT (S/C) 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 PY 1993 BP 71 EP 84 PG 14 WC Engineering, Aerospace SC Engineering GA BA50F UT WOS:A1993BA50F00010 ER PT J AU MARTIN, BD SIEBES, G AF MARTIN, BD SIEBES, G GP INSTITUTE OF ENVIRONM SCI TI MULTIPURPOSE THERMAL VACUUM TESTING WITH COMMON STIMULI SO PROCEEDINGS OF THE 14TH AEROSPACE TESTING SEMINAR LA English DT Proceedings Paper CT 14th Aerospace Testing Seminar CY MAR 09-11, 1993 CL MANHATTAN BEACH, CA SP INST ENVIRONM SCI, AEROSPACE CORP DE COMMON; STIMULI; MULTIPURPOSE; CONCURRENT; RESOURCES; SCHEDULE; FUNCTIONAL AND ENVIRONMENTAL TESTING 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 PY 1993 BP 85 EP 88 PG 4 WC Engineering, Aerospace SC Engineering GA BA50F UT WOS:A1993BA50F00011 ER PT J AU KVATERNIK, RG HANKS, BR AF KVATERNIK, RG HANKS, BR GP INSTITUTE OF ENVIRONM SCI TI RESEARCH ON THE STRUCTURAL DYNAMICS VERIFICATION OF FLEXIBLE SPACECRAFT SO PROCEEDINGS OF THE 14TH AEROSPACE TESTING SEMINAR LA English DT Proceedings Paper CT 14th Aerospace Testing Seminar CY MAR 09-11, 1993 CL MANHATTAN BEACH, CA SP INST ENVIRONM SCI, AEROSPACE CORP DE SPACECRAFT DYNAMICS; DYNAMIC SCALE MODELS; STRUCTURAL VERIFICATION; SUSPENSION SYSTEMS; GROUND VIBRATION TESTING; CONTROLS-STRUCTURES INTERACTION C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. 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 PY 1993 BP 167 EP 197 PG 31 WC Engineering, Aerospace SC Engineering GA BA50F UT WOS:A1993BA50F00017 ER PT J AU HINE, MJ AF HINE, MJ GP INSTITUTE OF ENVIRONM SCI TI EVALUATION OF CONSERVATISM IN LOW-FREQUENCY VIBRATION TEST CONTROL SO PROCEEDINGS OF THE 14TH AEROSPACE TESTING SEMINAR LA English DT Proceedings Paper CT 14th Aerospace Testing Seminar CY MAR 09-11, 1993 CL MANHATTAN BEACH, CA SP INST ENVIRONM SCI, AEROSPACE CORP DE CONSERVATISM; OVERTEST; VIBRATION; TEST; AEROSPACE 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 PY 1993 BP 223 EP 233 PG 11 WC Engineering, Aerospace SC Engineering GA BA50F UT WOS:A1993BA50F00020 ER PT B AU SCHARTON, T AF SCHARTON, T GP INSTITUTE OF ENVIRONM SCI TI FORCE LIMITED VIBRATION TESTING AT JPL SO PROCEEDINGS OF THE 14TH AEROSPACE TESTING SEMINAR LA English DT Proceedings Paper CT 14th Aerospace Testing Seminar CY MAR 09-11, 1993 CL MANHATTAN BEACH, CA SP INST ENVIRONM SCI, AEROSPACE CORP C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 1 Z9 2 U1 0 U2 0 PU INST ENVIRONMENTAL SCIENCES PI MT PROSPECT PA 940 E NORTHWEST HIGHWAY, MT PROSPECT, IL 60056 PY 1993 BP 241 EP 251 PG 11 WC Engineering, Aerospace SC Engineering GA BA50F UT WOS:A1993BA50F00022 ER PT B AU GAWRONSKI, W AF GAWRONSKI, W GP AMER AUTOMAT CONTROL COUNCIL TI BALANCED LQG COMPENSATOR FOR FLEXIBLE STRUCTURES SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP GAWRONSKI, W (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 1003 EP 1009 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00227 ER PT B AU MAGHAMI, PG GUPTA, S AF MAGHAMI, PG GUPTA, S GP AMER AUTOMAT CONTROL COUNCIL TI ON EIGENSYSTEM ASSIGNMENT WITH DISSIPATIVITY CONSTRAINTS SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP MAGHAMI, PG (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23681, USA. NR 0 TC 7 Z9 7 U1 0 U2 0 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 1271 EP 1276 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00285 ER PT B AU GAWRONSKI, W AF GAWRONSKI, W GP AMER AUTOMAT CONTROL COUNCIL TI COMPUTATION OF H-INFINITY NORM FOR FLEXIBLE STRUCTURES SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP GAWRONSKI, W (reprint author), JET PROP LAB,PASADENA,CA 91109, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 1287 EP 1289 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00288 ER PT B AU SMITH, PN SRIDHAR, B SUORSA, RE AF SMITH, PN SRIDHAR, B SUORSA, RE GP AMER AUTOMAT CONTROL COUNCIL TI MULTIPLE CAMERA MOTION STEREOSCOPY FOR RANGE ESTIMATION IN HELICOPTER FLIGHT SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP SMITH, PN (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 1339 EP 1343 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00300 ER PT B AU BLACKWELL, AL BLACKWELL, CC AF BLACKWELL, AL BLACKWELL, CC GP AMER AUTOMAT CONTROL COUNCIL TI A STRATEGY FOR CONTROL OF IMBALANCE FORCES ON THE NASA CENTRIFUGE FACILITY PROJECT MASS-BALANCE TESTBED SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP BLACKWELL, AL (reprint author), NASA,AMES RES CTR,MOFFETT FIELD,CA 94035, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 1811 EP 1813 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00400 ER PT B AU BERENJI, HR KHEDKAR, PS AF BERENJI, HR KHEDKAR, PS GP AMER AUTOMAT CONTROL COUNCIL TI ADAPTIVE FUZZY CONTROL WITH REINFORCEMENT LEARNING SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP BERENJI, HR (reprint author), NASA,AMES RES CTR,AI RES BRANCH,MS 269-2,MT VIEW,CA 94035, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 1840 EP 1844 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00407 ER PT B AU TAYLOR, LW RAMAKRISHNAN, J AF TAYLOR, LW RAMAKRISHNAN, J GP AMER AUTOMAT CONTROL COUNCIL TI DYNAMIC ANALYSIS OF SPACE STATION FREEDOM ASSEMBLY VIA CONTINUUM MODELING SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP TAYLOR, LW (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23665, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 2471 EP 2474 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00545 ER PT B AU GRAHAM, RE DUFORE, VJ AF GRAHAM, RE DUFORE, VJ GP AMER AUTOMAT CONTROL COUNCIL TI ARROW MODE REBOOST ANALYSIS FOR SPACE STATION FREEDOM SO PROCEEDINGS OF THE 1993 AMERICAN CONTROL CONFERENCE, VOLS 1-3 LA English DT Proceedings Paper CT 1993 AMERICAN CONTROL CONF CY JUN 02-04, 1993 CL SAN FRANCISCO, CA SP INT FEDERAT AUTOMAT CONTROL, AMER INST AERONAUT & ASTRONAUT, AMER INST CHEM ENGINEERS, ASSOC IRON & STEEL ENGINEERS, AMER SOC MECH ENGINEERS, IEEE, INSTRUMENT SOC AMER, SOC COMP SIMULAT RP GRAHAM, RE (reprint author), NASA,LEWIS RES CTR,CONTROL SYST BRANCH,21000 BROOKPARK RD,CLEVELAND,OH 44135, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA NEW YORK BN 0-7803-0860-3 PY 1993 BP 2485 EP 2488 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BY87D UT WOS:A1993BY87D00548 ER PT B AU TJOELKER, RL PRESTAGE, JD DICK, GJ MALEKI, L AF TJOELKER, RL PRESTAGE, JD DICK, GJ MALEKI, L GP IEEE TI LONG-TERM STABILITY OF HG+ TRAPPED ION FREQUENCY STANDARDS SO PROCEEDINGS OF THE 1993 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM LA English DT Proceedings Paper CT 1993 IEEE International Frequency Control Symposium (the 47th Annual Symposium) CY JUN 02-04, 1993 CL SALT LAKE CITY, UT SP IEEE, ULTRASPM FERROELECT & FREQUENCY CONTROL SOC C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 9 Z9 11 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-0905-7 PY 1993 BP 132 EP 138 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BZ86X UT WOS:A1993BZ86X00019 ER PT B AU PRESTAGE, JD TJOELKER, RL DICK, GJ MALEKI, L AF PRESTAGE, JD TJOELKER, RL DICK, GJ MALEKI, L GP IEEE TI IMPROVED LINEAR ION-TRAP PHYSICS PACKAGE SO PROCEEDINGS OF THE 1993 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM LA English DT Proceedings Paper CT 1993 IEEE International Frequency Control Symposium (the 47th Annual Symposium) CY JUN 02-04, 1993 CL SALT LAKE CITY, UT SP IEEE, ULTRASPM FERROELECT & FREQUENCY CONTROL SOC C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 7 Z9 7 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-0905-7 PY 1993 BP 144 EP 147 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BZ86X UT WOS:A1993BZ86X00021 ER PT B AU PRESTAGE, JD TJOELKER, RL DICK, GJ MALEKI, L AF PRESTAGE, JD TJOELKER, RL DICK, GJ MALEKI, L GP IEEE TI DOPPLER SIDE-BAND SPECTRA FOR IONS IN A LINEAR TRAP SO PROCEEDINGS OF THE 1993 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM LA English DT Proceedings Paper CT 1993 IEEE International Frequency Control Symposium (the 47th Annual Symposium) CY JUN 02-04, 1993 CL SALT LAKE CITY, UT SP IEEE, ULTRASPM FERROELECT & FREQUENCY CONTROL SOC C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 8 Z9 8 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-0905-7 PY 1993 BP 148 EP 154 PG 7 WC Engineering, Electrical & Electronic SC Engineering GA BZ86X UT WOS:A1993BZ86X00022 ER PT B AU SANTIAGO, DG DICK, GJ AF SANTIAGO, DG DICK, GJ GP IEEE TI CLOSED-LOOP TESTS OF THE NASA SAPPHIRE PHASE STABILIZER SO PROCEEDINGS OF THE 1993 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM LA English DT Proceedings Paper CT 1993 IEEE International Frequency Control Symposium (the 47th Annual Symposium) CY JUN 02-04, 1993 CL SALT LAKE CITY, UT SP IEEE, ULTRASPM FERROELECT & FREQUENCY CONTROL SOC C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 5 Z9 5 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-0905-7 PY 1993 BP 774 EP 778 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA BZ86X UT WOS:A1993BZ86X00107 ER PT B AU MORABITO, D KRISHER, T ASMAR, S AF MORABITO, D KRISHER, T ASMAR, S GP IEEE TI THE FLIGHT PERFORMANCE OF THE GALILEO ORBITER USO SO PROCEEDINGS OF THE 1993 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM LA English DT Proceedings Paper CT 1993 IEEE International Frequency Control Symposium (the 47th Annual Symposium) CY JUN 02-04, 1993 CL SALT LAKE CITY, UT SP IEEE, ULTRASPM FERROELECT & FREQUENCY CONTROL SOC 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 0-7803-0905-7 PY 1993 BP 788 EP 805 PG 18 WC Engineering, Electrical & Electronic SC Engineering GA BZ86X UT WOS:A1993BZ86X00110 ER PT B AU BACKES, PG BEAHAN, J LONG, MK STEELE, RD BON, B ZIMMERMAN, W AF BACKES, PG BEAHAN, J LONG, MK STEELE, RD BON, B ZIMMERMAN, W GP IEEE IEEE IEEE TI A PROTOTYPE SYSTEM FOR GROUND CONTROL SPACE TELEROBOTICS SO PROCEEDINGS OF THE 1993 IEEE INTERNATIONAL SYMPOSIUM ON INTELLIGENT CONTROL LA English DT Proceedings Paper CT 1993 IEEE International Symposium on Intelligent Control CY AUG 25-27, 1993 CL CHICAGO, IL SP IEEE, CONTROL SYST SOC 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 BN 0-7803-1206-6 PY 1993 BP 98 EP 103 DI 10.1109/ISIC.1993.397650 PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BZ54S UT WOS:A1993BZ54S00017 ER PT B AU LEE, SK PARK, J AF LEE, SK PARK, J GP IEEE IEEE IEEE TI DUAL-MODE DYNAMICS NEURAL-NETWORK FOR NON-ATTACKING N-QUEEN PROBLEM SO PROCEEDINGS OF THE 1993 IEEE INTERNATIONAL SYMPOSIUM ON INTELLIGENT CONTROL LA English DT Proceedings Paper CT 1993 IEEE International Symposium on Intelligent Control CY AUG 25-27, 1993 CL CHICAGO, IL SP IEEE, CONTROL SYST SOC 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 BN 0-7803-1206-6 PY 1993 BP 588 EP 593 DI 10.1109/ISIC.1993.397631 PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BZ54S UT WOS:A1993BZ54S00102 ER PT S AU SUN, XH AF SUN, XH BE Hariri, S Berra, PB TI ON THE PARALLEL DIAGONAL DOMINANT ALGORITHM SO PROCEEDINGS OF THE 1993 INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING, VOL III: ALGORITHMS & APPLICATIONS SE PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING LA English DT Proceedings Paper CT 1993 International Conference on Parallel Processing CY AUG 16-20, 1993 CL SYRACUSE UNIV, SYRACUSE, NY SP PENN STATE UNIV HO SYRACUSE UNIV C1 NASA,LANGLEY RES CTR,ICASE,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CRC PRESS INC PI BOCA RATON PA 2000 CORPORATE BLVD NW, BOCA RATON, FL 33431 SN 0190-3918 BN 0-8493-8986-0 J9 PROC INT CONF PARAL PY 1993 BP 10 EP 17 PG 8 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BA34P UT WOS:A1993BA34P00002 ER PT S AU FIJANY, A AF FIJANY, A BE Hariri, S Berra, PB TI TIME PARALLEL ALGORITHMS FOR SOLUTION OF LINEAR PARABOLIC PDES SO PROCEEDINGS OF THE 1993 INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING, VOL III: ALGORITHMS & APPLICATIONS SE PROCEEDINGS OF THE INTERNATIONAL CONFERENCE ON PARALLEL PROCESSING LA English DT Proceedings Paper CT 1993 International Conference on Parallel Processing CY AUG 16-20, 1993 CL SYRACUSE UNIV, SYRACUSE, NY SP PENN STATE UNIV HO SYRACUSE UNIV C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CRC PRESS INC PI BOCA RATON PA 2000 CORPORATE BLVD NW, BOCA RATON, FL 33431 SN 0190-3918 BN 0-8493-8986-0 J9 PROC INT CONF PARAL PY 1993 BP 51 EP 55 PG 5 WC Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Computer Science; Engineering GA BA34P UT WOS:A1993BA34P00008 ER PT B AU GATES, TS AF GATES, TS GP SOC EXPTL MECH TI THE EFFECTS OF PHYSICAL AGING ON THE NONLINEAR STRESS-STRAIN BEHAVIOR OF A GRAPHITE THERMOPLASTIC COMPOSITE SO PROCEEDINGS OF THE 1993 SEM 50TH ANNIVERSARY SPRING CONFERENCE ON EXPERIMENTAL MECHANICS LA English DT Proceedings Paper CT 1993 SEM 50 Anniversary Spring Conference on Experimental Mechanics CY JUN 07-09, 1993 CL DEARBORN, MI SP SOC EXPTL MECH, SLOVENE SOC EXPTL MECH C1 NASA LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-43-7 PY 1993 BP 694 EP 704 PG 11 WC Materials Science, Multidisciplinary; Mechanics SC Materials Science; Mechanics GA BA19T UT WOS:A1993BA19T00075 ER PT S AU JACKSON, AH CHRISTOPHER, P AF JACKSON, AH CHRISTOPHER, P BE Schoen, J TI AN OPTIMIZATION METHOD FOR TRACKING AND DATA RELAY SATELLITE POSITIONS - WITH EMPHASIS ON INDIAN-OCEAN - TIDBINBILLA LINK SO PROCEEDINGS OF THE 1993 SUMMER COMPUTER SIMULATION CONFERENCE SE PROCEEDINGS OF THE SUMMER COMPUTER SIMULATION CONFERENCE LA English DT Proceedings Paper CT 25th Annual Summer Computer Simulation Conference CY JUL 19-21, 1993 CL BOSTON, MA SP SOC COMP SIMULAT C1 NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. 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 SN 0094-7474 BN 1-56555-057-9 J9 P SUMM COMP PY 1993 BP 590 EP 603 PG 14 WC Computer Science, Interdisciplinary Applications; Multidisciplinary Sciences SC Computer Science; Science & Technology - Other Topics GA BA23R UT WOS:A1993BA23R00103 ER PT S AU TUNG, YW STEINMAN, J AF TUNG, YW STEINMAN, J BE Schoen, J TI INTERACTIVE GRAPHICS FOR THE PARALLEL AND DISTRIBUTED COMPUTING SIMULATION SO PROCEEDINGS OF THE 1993 SUMMER COMPUTER SIMULATION CONFERENCE SE PROCEEDINGS OF THE SUMMER COMPUTER SIMULATION CONFERENCE LA English DT Proceedings Paper CT 25th Annual Summer Computer Simulation Conference CY JUL 19-21, 1993 CL BOSTON, MA SP SOC COMP SIMULAT DE INTERACTIVE SIMULATION; PARALLEL DISCRETE-EVENT SIMULATION; OBJECT-ORIENTED SIMULATION; SPEEDES C1 JET PROP LAB,PASADENA,CA 91109. JET PROP LAB,PASADENA,CA 91109. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SOC COMPUTER SIMULATION INT PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92177 SN 0094-7474 BN 1-56555-057-9 J9 P SUMM COMP PY 1993 BP 695 EP 700 PG 6 WC Computer Science, Interdisciplinary Applications; Multidisciplinary Sciences SC Computer Science; Science & Technology - Other Topics GA BA23R UT WOS:A1993BA23R00119 ER PT S AU STEINMAN, JS AF STEINMAN, JS BE Schoen, J TI SYNCHRONIZATION OF PARALLEL AND DISTRIBUTED INTERACTIVE MILITARY SIMULATIONS USING SPEEDES SO PROCEEDINGS OF THE 1993 SUMMER COMPUTER SIMULATION CONFERENCE SE PROCEEDINGS OF THE SUMMER COMPUTER SIMULATION CONFERENCE LA English DT Proceedings Paper CT 25th Annual Summer Computer Simulation Conference CY JUL 19-21, 1993 CL BOSTON, MA SP SOC COMP SIMULAT DE SPEEDES; BREATHING TIME BUCKETS; TIME WARP; OBJECT-ORIENTED SIMULATION; INTERACTIVE SIMULATION; PARALLEL DISCRETE-EVENT SIMULATION; PROXIMITY DETECTION C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SOC COMPUTER SIMULATION INT PI SAN DIEGO PA PO BOX 17900, SAN DIEGO, CA 92177 SN 0094-7474 BN 1-56555-057-9 J9 P SUMM COMP PY 1993 BP 701 EP 710 PG 10 WC Computer Science, Interdisciplinary Applications; Multidisciplinary Sciences SC Computer Science; Science & Technology - Other Topics GA BA23R UT WOS:A1993BA23R00120 ER PT B AU JOSHI, SS BAYARD, DS AF JOSHI, SS BAYARD, DS GP IEEE TI A NEW APPROACH TO STRUCTURAL FAILURE-DETECTION BASED ON ADAPTIVE LATTICE FILTERING SO PROCEEDINGS OF THE 32ND IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 LA English DT Proceedings Paper CT 32nd IEEE Conference on Decision and Control CY DEC 15-17, 1993 CL SAN ANTONIO, TX SP IEEE, CONTROL SYST 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 0-7803-1298-8 PY 1993 BP 249 EP 254 DI 10.1109/CDC.1993.325153 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Operations Research & Management Science; Mathematics, Applied SC Automation & Control Systems; Engineering; Operations Research & Management Science; Mathematics GA BA27F UT WOS:A1993BA27F00049 ER PT B AU LEE, S KIM, S AF LEE, S KIM, S GP IEEE TI KINEMATIC ANALYSIS OF GENERALIZED PARALLEL MANIPULATOR SYSTEMS SO PROCEEDINGS OF THE 32ND IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 LA English DT Proceedings Paper CT 32nd IEEE Conference on Decision and Control CY DEC 15-17, 1993 CL SAN ANTONIO, TX SP IEEE, CONTROL SYST SOC C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 5 Z9 5 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1298-8 PY 1993 BP 1097 EP 1102 DI 10.1109/CDC.1993.325354 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Operations Research & Management Science; Mathematics, Applied SC Automation & Control Systems; Engineering; Operations Research & Management Science; Mathematics GA BA27F UT WOS:A1993BA27F00227 ER PT B AU LEE, S KIL, RM AF LEE, S KIL, RM GP IEEE TI REDUNDANT ARM KINEMATIC CONTROL WITH RECURRENT LOOP SO PROCEEDINGS OF THE 32ND IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 LA English DT Proceedings Paper CT 32nd IEEE Conference on Decision and Control CY DEC 15-17, 1993 CL SAN ANTONIO, TX SP IEEE, CONTROL SYST 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 0-7803-1298-8 PY 1993 BP 1109 EP 1115 DI 10.1109/CDC.1993.325356 PG 7 WC Automation & Control Systems; Engineering, Electrical & Electronic; Operations Research & Management Science; Mathematics, Applied SC Automation & Control Systems; Engineering; Operations Research & Management Science; Mathematics GA BA27F UT WOS:A1993BA27F00229 ER PT B AU LEE, SK KAY, YC AF LEE, SK KAY, YC GP IEEE TI VISION-BASED MANIPULATOR SELF-CALIBRATION WITH MOTION ESTIMATION SO PROCEEDINGS OF THE 32ND IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 LA English DT Proceedings Paper CT 32nd IEEE Conference on Decision and Control CY DEC 15-17, 1993 CL SAN ANTONIO, TX SP IEEE, CONTROL SYST SOC C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 2 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-1298-8 PY 1993 BP 1610 EP 1616 DI 10.1109/CDC.1993.325459 PG 7 WC Automation & Control Systems; Engineering, Electrical & Electronic; Operations Research & Management Science; Mathematics, Applied SC Automation & Control Systems; Engineering; Operations Research & Management Science; Mathematics GA BA27F UT WOS:A1993BA27F00332 ER PT B AU KLEIN, V AF KLEIN, V GP IEEE TI APPLICATION OF SYSTEM-IDENTIFICATION TO HIGH-PERFORMANCE AIRCRAFT SO PROCEEDINGS OF THE 32ND IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 LA English DT Proceedings Paper CT 32nd IEEE Conference on Decision and Control CY DEC 15-17, 1993 CL SAN ANTONIO, TX SP IEEE, CONTROL SYST SOC C1 GEORGE WASHINGTON UNIV,JOINT INST ADVANCEMENT FLIGHT SCI,NASA,LANGLEY RES CTR,HAMPTON,VA 23681. 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 0-7803-1298-8 PY 1993 BP 2253 EP 2259 DI 10.1109/CDC.1993.325599 PG 7 WC Automation & Control Systems; Engineering, Electrical & Electronic; Operations Research & Management Science; Mathematics, Applied SC Automation & Control Systems; Engineering; Operations Research & Management Science; Mathematics GA BA27F UT WOS:A1993BA27F00471 ER PT B AU BAYARD, DS CHIANG, RY AF BAYARD, DS CHIANG, RY GP IEEE TI A FREQUENCY-DOMAIN APPROACH TO IDENTIFICATION, UNCERTAINTY CHARACTERIZATION AND ROBUST-CONTROL DESIGN SO PROCEEDINGS OF THE 32ND IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 LA English DT Proceedings Paper CT 32nd IEEE Conference on Decision and Control CY DEC 15-17, 1993 CL SAN ANTONIO, TX SP IEEE, CONTROL SYST SOC 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 0-7803-1298-8 PY 1993 BP 2266 EP 2271 DI 10.1109/CDC.1993.325601 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Operations Research & Management Science; Mathematics, Applied SC Automation & Control Systems; Engineering; Operations Research & Management Science; Mathematics GA BA27F UT WOS:A1993BA27F00473 ER PT B AU GILMAN, D AF GILMAN, D BE Graham, DPW TI BENEFITS GAINED AND LESSONS LEARNED FROM NASAS SMALL EXPLORER (SMEX) PROGRAM SO PROCEEDINGS OF THE CASI SYMPOSIUM ON SMALL SATELLITES LA English DT Proceedings Paper CT CASI Symposium on Small Satellites CY NOV 02-03, 1993 CL OTTAWA, CANADA SP CANADIAN AERONAUT & SPACE INST C1 NASA,SMALL EXPLORER PROGRAM,WASHINGTON,DC 20546. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CANADIAN AERONAUTICS AND SPACE INST PI OTTAWA PA 130 SLATER, SUITE 818, OTTAWA ON K1P 6E2, CANADA BN 0-920203-02-7 PY 1993 BP 1 EP 12 PG 12 WC Engineering, Aerospace SC Engineering GA BD05H UT WOS:A1993BD05H00001 ER PT J AU SURAMPUDI, S NARAYANAN, SR VAMOS, E FRANK, H HALPERT, G AF SURAMPUDI, S NARAYANAN, SR VAMOS, E FRANK, H HALPERT, G GP CALIF STATE UNIV, DEPT ELECT ENGN TI ADVANCES IN DIRECT METHANOL FUEL CELLS AT JPL SO PROCEEDINGS OF THE EIGHTH ANNUAL BATTERY CONFERENCE ON APPLICATIONS AND ADVANCES LA English DT Proceedings Paper CT 8th Annual Battery Conference on Applications and Advances CY JAN 12-14, 1993 CL LONG BEACH, CA SP CALIF STATE UNIV, DEPT ELECT ENGN, CALIF INST TECHNOL, JET PROPULS LAB, ELECTROCHEM SOC INC, SO CALIF NEVADA SECT, AIAA, SAN GABRIEL VALLEY SECT, IEEE, ORANGE CTY SECT, INFOTECHNICS INC, CORDLESS POWER NEWS & POWER TECHNOL NEWS, SO CALIF EDISON CO, DEPT WATER & POWER, LOS ANGELES, LIEBERT CORP, INT BATTERY TECHNOL, BATTERY LINE C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 1 Z9 1 U1 0 U2 0 PU CALIFORNIA STATE UNIV CONSORTIUM PI LONG BEACH PA 1250 BELLFLOWER BLVD, LONG BEACH, CA 90840 PY 1993 BP 97 EP 106 PG 10 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BC66F UT WOS:A1993BC66F00014 ER PT J AU SMITHRICK, JJ HALL, SW AF SMITHRICK, JJ HALL, SW GP CALIF STATE UNIV, DEPT ELECT ENGN TI VALIDATION TEST OF 125-AH ADVANCED DESIGN IPV NICKEL-HYDROGEN FLIGHT CELLS SO PROCEEDINGS OF THE EIGHTH ANNUAL BATTERY CONFERENCE ON APPLICATIONS AND ADVANCES LA English DT Proceedings Paper CT 8th Annual Battery Conference on Applications and Advances CY JAN 12-14, 1993 CL LONG BEACH, CA SP CALIF STATE UNIV, DEPT ELECT ENGN, CALIF INST TECHNOL, JET PROPULS LAB, ELECTROCHEM SOC INC, SO CALIF NEVADA SECT, AIAA, SAN GABRIEL VALLEY SECT, IEEE, ORANGE CTY SECT, INFOTECHNICS INC, CORDLESS POWER NEWS & POWER TECHNOL NEWS, SO CALIF EDISON CO, DEPT WATER & POWER, LOS ANGELES, LIEBERT CORP, INT BATTERY TECHNOL, BATTERY LINE C1 NATL AERONAUT & SPACE ADM,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CALIFORNIA STATE UNIV CONSORTIUM PI LONG BEACH PA 1250 BELLFLOWER BLVD, LONG BEACH, CA 90840 PY 1993 BP 333 EP 342 PG 10 WC Electrochemistry; Energy & Fuels SC Electrochemistry; Energy & Fuels GA BC66F UT WOS:A1993BC66F00044 ER PT B AU MINTON, S AF MINTON, S GP AMER ASSOC ARTIFICIAL INTELLIGENCE TI INTEGRATING HEURISTICS FOR CONSTRAINT SATISFACTION PROBLEMS - A CASE-STUDY SO PROCEEDINGS OF THE ELEVENTH NATIONAL CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 11th National Conference on Artificial Intelligence (AAAI-93) CY JUL 11-15, 1993 CL WASHINGTON, DC SP AMER ASSOC ARTIFICIAL INTELLIGENCE C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 1 Z9 2 U1 0 U2 0 PU M I T PRESS PI CAMBRIDGE PA 55 HAYWARD ST, CAMBRIDGE, MA 02142 BN 0-262-51071-5 PY 1993 BP 120 EP 126 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BA08N UT WOS:A1993BA08N00019 ER PT B AU BAUDIN, C KEDAR, S UNDERWOOD, JG BAYA, V AF BAUDIN, C KEDAR, S UNDERWOOD, JG BAYA, V GP AMER ASSOC ARTIFICIAL INTELLIGENCE TI QUESTION-BASED ACQUISITION OF CONCEPTUAL INDEXES FOR MULTIMEDIA DESIGN DOCUMENTATION SO PROCEEDINGS OF THE ELEVENTH NATIONAL CONFERENCE ON ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 11th National Conference on Artificial Intelligence (AAAI-93) CY JUL 11-15, 1993 CL WASHINGTON, DC SP AMER ASSOC ARTIFICIAL INTELLIGENCE C1 NASA,AMES RES CTR,ARTIFICIAL INTELLIGENCE RES BRANCH,MOFFETT FIELD,CA 94035. NR 0 TC 2 Z9 2 U1 0 U2 0 PU M I T PRESS PI CAMBRIDGE PA 55 HAYWARD ST, CAMBRIDGE, MA 02142 BN 0-262-51071-5 PY 1993 BP 452 EP 458 PG 7 WC Computer Science, Artificial Intelligence SC Computer Science GA BA08N UT WOS:A1993BA08N00068 ER PT B AU CHOI, B LIN, YJ LU, YQ AF CHOI, B LIN, YJ LU, YQ GP SOC COMP SIMULAT INT TI INTELLIGENT CONTROL OF A MULTI-DEGREE-OF-FREEDOM REACTION COMPENSATING PLATFORM SYSTEM UTILIZING FUZZY-LOGIC SO PROCEEDINGS OF THE FIFTH WORKSHOP ON NEURAL NETWORKS: ACADEMIC/INDUSTRIAL/NASA/DEFENSE: AN INTERNATIONAL CONFERENCE ON COMPUTATIONAL INTELLIGENCE: NEURAL NETWORKS, FUZZY SYSTEMS, EVOLUTIONARY PROGRAMMING AND VIRTUAL REALITY SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 5th Workshop on Neural Networks and Fuzzy Logic: Emerging Technology Applications (WNN 93/FNN 93)/3rd Annual International Simulation Technology Conference (SimTec 93) CY NOV 07-10, 1993 CL SAN FRANCISCO, CA SP SOC COMP SIMULAT INT, NASA, SOC PHOTO OPT INSTRUMENTAT ENGINEERS, INT NEURAL NETWORKS SOC, IEEE, NEURAL NETWORKS COUNCIL C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. 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 1-565-55059-5 J9 P SOC PHOTO-OPT INS PY 1993 VL 2204 BP 9 EP 14 PG 6 WC Engineering, Electrical & Electronic SC Engineering GA BZ65E UT WOS:A1993BZ65E00002 ER PT J AU GALDOS, J UPADHYAY, TN DEATON, AW LOMAS, JJ AF GALDOS, J UPADHYAY, TN DEATON, AW LOMAS, JJ GP INST NAVIGAT TI A GPS RELATIVE NAVIGATION FILTER FOR AUTOMATIC RENDEZVOUS AND CAPTURE SO PROCEEDINGS OF THE NATIONAL TECHNICAL MEETING OF THE INSTITUTE OF NAVIGATION: EVOLUTION THROUGH INTEGRATION OF CURRENT AND EMERGING SYSTEMS LA English DT Proceedings Paper CT National Technical Meeting of the Institute-of-Navigation on Evolution Through Integration of Current and Emerging Systems CY JAN 20-22, 1993 CL SAN FRANCISCO, CA SP INST NAVIGAT C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. NR 0 TC 1 Z9 1 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1993 BP 83 EP 94 PG 12 WC Engineering, Aerospace; Transportation SC Engineering; Transportation GA BA73Z UT WOS:A1993BA73Z00009 ER PT B AU BACH, RE PAIELLI, RA MCNALLY, BD WARNER, DN AF BACH, RE PAIELLI, RA MCNALLY, BD WARNER, DN GP INST NAVIGAT TI INCLUDING DELTARANGE MEASUREMENTS IN GPS-AIDED NAVIGATION SYSTEMS SO PROCEEDINGS OF THE NATIONAL TECHNICAL MEETING OF THE INSTITUTE OF NAVIGATION: EVOLUTION THROUGH INTEGRATION OF CURRENT AND EMERGING SYSTEMS LA English DT Proceedings Paper CT National Technical Meeting of the Institute-of-Navigation on Evolution Through Integration of Current and Emerging Systems CY JAN 20-22, 1993 CL SAN FRANCISCO, CA SP INST NAVIGAT C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1993 BP 131 EP 142 PG 12 WC Engineering, Aerospace; Transportation SC Engineering; Transportation GA BA73Z UT WOS:A1993BA73Z00015 ER PT B AU CANUTO, VM CHENG, Y AF CANUTO, VM CHENG, Y BE Qiu, SQ TI Stably stratified shear flow: A new model for the turbulent kinetic energy dissipation length scale SO PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON FLUID MECHANICS LA English DT Proceedings Paper CT 2nd International Conference on Fluid Mechanics (ICFM-II) CY JUL 07-10, 1993 CL BEIJING, PEOPLES R CHINA SP Chinese Soc Theoret & Appl Mech, ASME, Div Bioengn, ASME, Div Fluid Engn, APS, Div Fluid Dynam, Gesell Angewandte Math & Mech, Japan Soc Aeronaut & Space Sci, JAapanSoc Fluid Mech, US Natl Comm Biomech C1 NASA,GODDARD INST SPACE STUDIES,NEW YORK,NY 10025. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PEKING UNIV PRESS PI BEIJING PA HAIDIANQU, BEIJING, PEOPLES R CHINA BN 7-301-02160-7 PY 1993 BP 1 EP 6 PG 6 WC Mathematics, Applied; Mechanics; Physics, Fluids & Plasmas SC Mathematics; Mechanics; Physics GA BD20V UT WOS:A1993BD20V00001 ER PT B AU TADJFAR, M AF TADJFAR, M BE Qiu, SQ TI Receptivity to the interaction of a roughness element with free-stream disturbances of a laminar boundary layer SO PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON FLUID MECHANICS LA English DT Proceedings Paper CT 2nd International Conference on Fluid Mechanics (ICFM-II) CY JUL 07-10, 1993 CL BEIJING, PEOPLES R CHINA SP Chinese Soc Theoret & Appl Mech, ASME, Div Bioengn, ASME, Div Fluid Engn, APS, Div Fluid Dynam, Gesell Angewandte Math & Mech, Japan Soc Aeronaut & Space Sci, JAapanSoc Fluid Mech, US Natl Comm Biomech C1 NASA,AMES RES CTR,FLUID MECH LAB,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PEKING UNIV PRESS PI BEIJING PA HAIDIANQU, BEIJING, PEOPLES R CHINA BN 7-301-02160-7 PY 1993 BP 192 EP 198 PG 7 WC Mathematics, Applied; Mechanics; Physics, Fluids & Plasmas SC Mathematics; Mechanics; Physics GA BD20V UT WOS:A1993BD20V00034 ER PT B AU YING, RX AF YING, RX BE Qiu, SQ TI Numerical simulation of flow and dispersion data over two dimensional hills SO PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON FLUID MECHANICS LA English DT Proceedings Paper CT 2nd International Conference on Fluid Mechanics (ICFM-II) CY JUL 07-10, 1993 CL BEIJING, PEOPLES R CHINA SP Chinese Soc Theoret & Appl Mech, ASME, Div Bioengn, ASME, Div Fluid Engn, APS, Div Fluid Dynam, Gesell Angewandte Math & Mech, Japan Soc Aeronaut & Space Sci, JAapanSoc Fluid Mech, US Natl Comm Biomech C1 NASA,GODDARD INST SPACE STUDIES,NEW YORK,NY 10025. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PEKING UNIV PRESS PI BEIJING PA HAIDIANQU, BEIJING, PEOPLES R CHINA BN 7-301-02160-7 PY 1993 BP 687 EP 692 PG 6 WC Mathematics, Applied; Mechanics; Physics, Fluids & Plasmas SC Mathematics; Mechanics; Physics GA BD20V UT WOS:A1993BD20V00118 ER PT B AU HALL, DK BENSON, CS CHIEN, JYL AF HALL, DK BENSON, CS CHIEN, JYL BE Ferrick, M Pangburn, T TI ANALYSIS OF VISIBLE AND MICROWAVE SATELLITE DATA FOR SNOW MAPPING IN ALASKA SO PROCEEDINGS OF THE SIXTY-FIRST ANNUAL WESTERN SNOW CONFERENCE LA English DT Proceedings Paper CT 61st Annual Western Snow Conference/50th Annual Eastern Snow Conference CY JUN 08-10, 1993 CL QUEBEC CITY, CANADA C1 NASA,GODDARD SPACE FLIGHT CTR,HYDROL SCI BRANCH,GREENBELT,MD 20771. RI Hall, Dorothy/D-5562-2012 NR 0 TC 0 Z9 0 U1 0 U2 1 PU 61ST WESTERN SNOW CONFERENCE PI QUEBEC PA QUEBEC QUEBEC, CANADA PY 1993 BP 129 EP 137 PG 9 WC Meteorology & Atmospheric Sciences; Water Resources SC Meteorology & Atmospheric Sciences; Water Resources GA BA96Z UT WOS:A1993BA96Z00017 ER PT B AU KEHOE, MW DEATON, VC AF KEHOE, MW DEATON, VC GP SOC EXPTL MECH, INC TI CORRELATION OF ANALYTICAL AND EXPERIMENTAL HOT STRUCTURE VIBRATION RESULTS SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,DRYDEN FLIGHT RES FACIL,EDWARDS AFB,CA 93523. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 21 EP 35 PG 15 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00003 ER PT B AU GONG, L RICHARDS, WL MONAGHAN, RC QUINN, RD AF GONG, L RICHARDS, WL MONAGHAN, RC QUINN, RD GP SOC EXPTL MECH, INC TI PRELIMINARY-ANALYSIS FOR A MACH-8 CROSS-FLOW TRANSITION EXPERIMENT ON THE PEGASUS(R) SPACE BOOSTER SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,DRYDEN FLIGHT RES FACIL,EDWARDS AFB,CA 93523. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 53 EP 70 PG 18 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00006 ER PT B AU HOLANDA, R ANDERSON, RC LIEBERT, CH AF HOLANDA, R ANDERSON, RC LIEBERT, CH GP SOC EXPTL MECH, INC TI HEAT-FLUX MEASUREMENTS ON CERAMICS WITH THIN-FILM THERMOCOUPLES SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 78 EP 87 PG 10 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00008 ER PT B AU NG, D AF NG, D GP SOC EXPTL MECH, INC TI EMISSIVITY INDEPENDENT AND CALIBRATION FREE RATIOING MULTIWAVELENGTH PYROMETRY SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 98 EP 107 PG 10 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00010 ER PT B AU PARKER, AR AF PARKER, AR GP SOC EXPTL MECH, INC TI SIMULTANEOUS MEASUREMENT OF TEMPERATURE AND STRAIN USING 4 CONNECTING WIRES SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,DRYDEN FLIGHT RES FACIL,EDWARDS AFB,CA 93523. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 108 EP 115 PG 8 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00011 ER PT B AU RICHARDS, WL AF RICHARDS, WL GP SOC EXPTL MECH, INC TI STRAIN-GAUGE MEASUREMENT ERRORS IN THE TRANSIENT HEATING OF STRUCTURAL COMPONENTS SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,DRYDEN FLIGHT RES FACIL,EDWARDS AFB,CA 93523. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 116 EP 125 PG 10 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00012 ER PT B AU LEI, JF FICHTEL, E MCDANIEL, A AF LEI, JF FICHTEL, E MCDANIEL, A GP SOC EXPTL MECH, INC TI HIGH-TEMPERATURE STRAIN-MEASUREMENT WITH A RESISTANCE-STRAIN GAUGE - HOW TO SUCCESSFULLY OBTAIN DATA FROM A PDCR STRAIN SENSOR SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,SVERDRUP TECHNOL INC,LEWIS RES CTR GRP,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 126 EP 131 PG 6 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00013 ER PT B AU MOORE, TC AF MOORE, TC GP SOC EXPTL MECH, INC TI DEVELOPMENT OF A TEMPERATURE COMPENSATED HIGH-TEMPERATURE STRAIN-GAUGE SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 132 EP 142 PG 11 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00014 ER PT B AU GREER, LC OBERLE, LG AF GREER, LC OBERLE, LG GP SOC EXPTL MECH, INC TI A LASER SPECKLE TECHNIQUE FOR MEASURING STRAIN IN FIBERS AND WIRES AT HIGH-TEMPERATURES SO PROCEEDINGS OF THE STRUCTURAL TESTING TECHNOLOGY AT HIGH TEMPERATURE - II LA English DT Proceedings Paper CT Conference on Structural Testing Technology at High Temperature II CY NOV 08-10, 1993 CL OJAI, CA SP SOC EXPTL MECH INC C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SOC EXPERIMENTAL MECHANICS INC PI BETHEL PA 7 SCHOOL ST, BETHEL, CT 06801 BN 0-912053-40-2 PY 1993 BP 149 EP 154 PG 6 WC Instruments & Instrumentation; Mechanics SC Instruments & Instrumentation; Mechanics GA BA38Z UT WOS:A1993BA38Z00016 ER PT J AU CARRERE, V AF CARRERE, V GP CONSORTIUM INT EARTH SCI INFORMAT NETWORK TI A RADIATIVE-TRANSFER MODELING APPROACH TO RETRIEVE SURFACE SPECTRAL REFLECTANCE FROM AVIRIS RADIANCE DATA ACQUIRED DURING MAC EUROPE 91 - VALIDATION AND ERROR ANALYSIS SO PROCEEDINGS OF THE TWENTY-FIFTH INTERNATIONAL SYMPOSIUM ON REMOTE SENSING AND GLOBAL ENVIRONMENTAL CHANGE: TOOLS FOR SUSTAINABLE DEVELOPMENT, VOLS I AND II LA English DT Proceedings Paper CT 25th International Symposium on Remote Sensing and Global Environmental Change: Tools for Sustainable Development CY APR 04-08, 1993 CL GRAZ, AUSTRIA SP CONSORTIUM INT EARTH SCI INFORMAT NETWORK, ENVIRONM RES INST MICHIGAN, JOANNEUM RES, GRAZER CONGRESS CTR, NASA, TELESPAZIO S P A C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENVIRONMENTAL RESEARCH INST MICHIGAN PI ANN ARBOR PA PO BOX 134001, ANN ARBOR, MI 48113-4001 PY 1993 BP A74 EP A84 PG 11 WC Environmental Sciences; Geography; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Geography; Imaging Science & Photographic Technology GA BA32L UT WOS:A1993BA32L00008 ER PT J AU SAATCHI, SS VANZYL, J EVANS, D AF SAATCHI, SS VANZYL, J EVANS, D GP CONSORTIUM INT EARTH SCI INFORMAT NETWORK TI ESTIMATION OF SOIL-MOISTURE AND BIOMASS CHANGES USING SAR DATA DURING EFEDA-SPAIN EXPERIMENT SO PROCEEDINGS OF THE TWENTY-FIFTH INTERNATIONAL SYMPOSIUM ON REMOTE SENSING AND GLOBAL ENVIRONMENTAL CHANGE: TOOLS FOR SUSTAINABLE DEVELOPMENT, VOLS I AND II LA English DT Proceedings Paper CT 25th International Symposium on Remote Sensing and Global Environmental Change: Tools for Sustainable Development CY APR 04-08, 1993 CL GRAZ, AUSTRIA SP CONSORTIUM INT EARTH SCI INFORMAT NETWORK, ENVIRONM RES INST MICHIGAN, JOANNEUM RES, GRAZER CONGRESS CTR, NASA, TELESPAZIO S P A C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENVIRONMENTAL RESEARCH INST MICHIGAN PI ANN ARBOR PA PO BOX 134001, ANN ARBOR, MI 48113-4001 PY 1993 BP A201 EP A214 PG 14 WC Environmental Sciences; Geography; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Geography; Imaging Science & Photographic Technology GA BA32L UT WOS:A1993BA32L00019 ER PT J AU SHAFFER, LR BLAZEK, ML AF SHAFFER, LR BLAZEK, ML GP CONSORTIUM INT EARTH SCI INFORMAT NETWORK TI INTERNATIONAL AND INTERAGENCY COORDINATION OF NASA EARTH OBSERVING SYSTEM DATA AND INFORMATION-SYSTEM SO PROCEEDINGS OF THE TWENTY-FIFTH INTERNATIONAL SYMPOSIUM ON REMOTE SENSING AND GLOBAL ENVIRONMENTAL CHANGE: TOOLS FOR SUSTAINABLE DEVELOPMENT, VOLS I AND II LA English DT Proceedings Paper CT 25th International Symposium on Remote Sensing and Global Environmental Change: Tools for Sustainable Development CY APR 04-08, 1993 CL GRAZ, AUSTRIA SP CONSORTIUM INT EARTH SCI INFORMAT NETWORK, ENVIRONM RES INST MICHIGAN, JOANNEUM RES, GRAZER CONGRESS CTR, NASA, TELESPAZIO S P A C1 NASA,WASHINGTON,DC 20546. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENVIRONMENTAL RESEARCH INST MICHIGAN PI ANN ARBOR PA PO BOX 134001, ANN ARBOR, MI 48113-4001 PY 1993 BP A725 EP A734 PG 10 WC Environmental Sciences; Geography; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Geography; Imaging Science & Photographic Technology GA BA32L UT WOS:A1993BA32L00070 ER PT J AU WICKLAND, DE MURPHY, RE JANETOS, AC AF WICKLAND, DE MURPHY, RE JANETOS, AC GP CONSORTIUM INT EARTH SCI INFORMAT NETWORK TI OVERVIEW OF MAC EUROPE 91 CAMPAIGN AND NASA AIRBORNE IMAGING SPECTROMETRY AND RADAR PROGRAMS SO PROCEEDINGS OF THE TWENTY-FIFTH INTERNATIONAL SYMPOSIUM ON REMOTE SENSING AND GLOBAL ENVIRONMENTAL CHANGE: TOOLS FOR SUSTAINABLE DEVELOPMENT, VOLS I AND II LA English DT Proceedings Paper CT 25th International Symposium on Remote Sensing and Global Environmental Change: Tools for Sustainable Development CY APR 04-08, 1993 CL GRAZ, AUSTRIA SP CONSORTIUM INT EARTH SCI INFORMAT NETWORK, ENVIRONM RES INST MICHIGAN, JOANNEUM RES, GRAZER CONGRESS CTR, NASA, TELESPAZIO S P A C1 NASA,WASHINGTON,DC 20546. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENVIRONMENTAL RESEARCH INST MICHIGAN PI ANN ARBOR PA PO BOX 134001, ANN ARBOR, MI 48113-4001 PY 1993 BP A66 EP A73 PG 8 WC Environmental Sciences; Geography; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Geography; Imaging Science & Photographic Technology GA BA32L UT WOS:A1993BA32L00007 ER PT J AU ANGELICI, GL SHEFFNER, EJ AF ANGELICI, GL SHEFFNER, EJ GP CONSORTIUM INT EARTH SCI INFORMAT NETWORK TI A MILITARY DATABASE AND ITS APPLICABILITY TO EARTH-SCIENCE RESEARCH SO PROCEEDINGS OF THE TWENTY-FIFTH INTERNATIONAL SYMPOSIUM ON REMOTE SENSING AND GLOBAL ENVIRONMENTAL CHANGE: TOOLS FOR SUSTAINABLE DEVELOPMENT, VOLS I AND II LA English DT Proceedings Paper CT 25th International Symposium on Remote Sensing and Global Environmental Change: Tools for Sustainable Development CY APR 04-08, 1993 CL GRAZ, AUSTRIA SP CONSORTIUM INT EARTH SCI INFORMAT NETWORK, ENVIRONM RES INST MICHIGAN, JOANNEUM RES, GRAZER CONGRESS CTR, NASA, TELESPAZIO S P A C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ENVIRONMENTAL RESEARCH INST MICHIGAN PI ANN ARBOR PA PO BOX 134001, ANN ARBOR, MI 48113-4001 PY 1993 BP B330 EP B335 PG 6 WC Environmental Sciences; Geography; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Geography; Imaging Science & Photographic Technology GA BA32L UT WOS:A1993BA32L00112 ER PT J AU WOJTATOWICZ, M MARCHIN, GL ERICKSON, LE AF WOJTATOWICZ, M MARCHIN, GL ERICKSON, LE TI ATTEMPTS TO IMPROVE STRAIN A-101 OF YARROWIA-LIPOLYTICA FOR CITRIC-ACID PRODUCTION FROM N-PARAFFINS SO PROCESS BIOCHEMISTRY LA English DT Article ID CANDIDA-ALBICANS; SACCHAROMYCOPSIS-LIPOLYTICA; PLOIDY AB Citric and isocitric acid production were measured in strain A-101 of Yarrowia lipolytica. Product yield on n-hexadecane, including substrate used for cell growth, was in the range of 1.08-1.44 g total acid/g n-hexadecane. The citric acid fraction of total acids synthesized by a particular subculture was in the range 54-64%. Mutants of Y. lipolytica incapable of growth on citrate were isolated at low frequency and were extremely unstable. The difficulty was due to ploidy of our strain as confirmed by determination of nuclear DNA content, average cell diameter, and UV inactivation kinetics. Some mutants were also isolated that excreted predominantly isocitric acid when grown on n-hexadecane. C1 KANSAS STATE UNIV AGR & APPL SCI, DIV BIOL, MICROBIOL SECT, NASA, CDS CTR, MANHATTAN, KS 66506 USA. ACAD AGR WROCLAW, DEPT BIOTECHNOL & FOOD MICROBIOL, PL-50375 WROCLAW, POLAND. KANSAS STATE UNIV AGR & APPL SCI, DEPT CHEM ENGN, MANHATTAN, KS 66506 USA. NR 24 TC 9 Z9 10 U1 0 U2 1 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, OXON, ENGLAND SN 1359-5113 J9 PROCESS BIOCHEM JI Process Biochem. PY 1993 VL 28 IS 7 BP 453 EP 460 DI 10.1016/0032-9592(93)85028-E PG 8 WC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering, Chemical SC Biochemistry & Molecular Biology; Biotechnology & Applied Microbiology; Engineering GA LU386 UT WOS:A1993LU38600003 ER PT B AU NELSON, HG AF NELSON, HG BE Upadhya, K TI A CHALLENGE TO MATERIALS - ADVANCED HYPERSONIC FLIGHT HYDROGEN AND HIGH-TEMPERATURE MATERIALS SO PROCESSING, FABRICATION AND APPLICATION OF ADVANCED COMPOSITES LA English DT Proceedings Paper CT Conference on Processing Fabrication and Application of Advanced Composites CY AUG 09-11, 1993 CL LONG BEACH, CA SP ASM INT, MINERALS MET & MAT SOC C1 NASA,AMES RES CTR,MOFFETT FIELD,CA 94035. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASSOC PETROLEUM RE-REFINERS PI WASHINGTON PA 2025 PENNSYLVANIA AVENUE NW, SUITE 1111, WASHINGTON, DC 20006 BN 0-87170-473-0 PY 1993 BP 11 EP 20 PG 10 WC Materials Science, Multidisciplinary SC Materials Science GA BA08S UT WOS:A1993BA08S00002 ER PT J AU PELLIONISZ, AJ RAMOS, CF AF PELLIONISZ, AJ RAMOS, CF TI GEOMETRICAL APPROACH TO NEURAL-NET CONTROL OF MOVEMENTS AND POSTURE SO PROGRESS IN BRAIN RESEARCH LA English DT Review DE MOTOR CONTROL; GEOMETRY; SENSORIMOTOR; MODELING; COMPUTER SIMULATION; POSTURE; NEUROCOMPUTERS; FUNCTIONAL NEUROMUSCULAR STIMULATION ID VESTIBULO-OCULAR REFLEX; CENTRAL NERVOUS-SYSTEM; NEURONAL NETWORKS; METRIC TENSOR; TRANSFORMATIONS; COORDINATION; MUSCLES; BRAIN; MICROELECTRODES; CEREBELLUM AB In one approach to modeling brain function, sensorimotor integration is described as geometrical mapping among coordinates of non-orthogonal frames that are intrinsic to the system; in such a case sensors represent (covariant) afferents and motor effectors represent (contravariant) motor efferents. The neuronal networks that perform such a function are viewed as general tensor transformations among different expressions and metric tensors determining the geometry of neural functional spaces. Although the non-orthogonality of a coordinate system does not impose a specific geometry on the space, this ''Tensor Network Theory of brain function'' allows for the possibility that the geometry is non-Euclidean. It is suggested that investigation of the non-Euclidean nature of the geometry is the key to understanding brain function and to interpreting neuronal network f unction. This paper outlines three contemporary applications of such a theoretical modeling approach. The first is the analysis and interpretation of multi-electrode recordings. The internal geometries of neural networks controlling external behavior of the skeletomuscle system is experimentally determinable using such multi-unit recordings. The second application of this geometrical approach to brain theory is modeling the control of posture and movement. A preliminary simulation study has been conducted with the aim of understanding the control of balance in a standing human. The model appears to unify postural control strategies that have previously been considered to be independent of each other. Third, this paper emphasizes the importance of the geometrical approach for the design and fabrication of neurocomputers that could be used in functional neuromuscular stimulation (FNS) for replacing lost motor control. C1 UNIV CALIF BERKELEY, BERKELEY, CA 94720 USA. RP PELLIONISZ, AJ (reprint author), NASA, AMES RES CTR, 242-3, MOFFETT FIELD, CA 94035 USA. NR 65 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0079-6123 J9 PROG BRAIN RES JI Prog. Brain Res. PY 1993 VL 97 BP 245 EP 256 PG 12 WC Neurosciences SC Neurosciences & Neurology GA LZ357 UT WOS:A1993LZ35700029 ER PT J AU SINGH, NB GOTTLIEB, M HOPKINS, RH MAZELSKY, R DUVAL, WMB GLICKSMAN, ME AF SINGH, NB GOTTLIEB, M HOPKINS, RH MAZELSKY, R DUVAL, WMB GLICKSMAN, ME TI PHYSICAL VAPOR TRANSPORT GROWTH OF MERCUROUS CHLORIDE CRYSTALS SO PROGRESS IN CRYSTAL GROWTH AND CHARACTERIZATION OF MATERIALS LA English DT Review ID PURIFICATION; DEVICES AB We have carried out experiments to derive a quantitative understanding of the physical vapor transport (PVT) process and to identify convective effects on the crystal growth process. The experimental growth velocity was several orders of magnitude lower than the theoretically predicted value. The effusion holes were used to disturb the impurity boundary layers. We observed a change of 18% (not an order of magnitude) in growth velocities. The Arrhenius behavior of growth rate with temperature was used to derive the sticking coefficient. Experimental results on growth velocity as the aspect ratio was varied showed that with increasing convection, the growth rate increased up to a certain value and then dropped to a constant value. This indicated that a bifurcation had occured with a resulting change in transport behavior. Growth velocity measurements for the PVT process as a function of orientation of the g-vector were also made. The experimental results clearly showed that the growth velocity varied with g-vector for a particular temperature profile. The effects of convection on crystal quality were studied by varying the thermal conditions (source and crystal temperatures) which affects thermal convection during PVT. The results showed that crystals grown at low Rayleight numbers had better homogeneity. While no microgravity experiments were conducted, computation of mass flux for the horizontal orientation for various gravitational levels showed two distinct regions; above 10(-3) g where the flow was convective and strong circulating cells appeared, and also below 10(-3) g, where the flow was purely diffusive and no circulating cells were predicted. Therefore it is postulated that for the conditions of growth considered, space flight experiments with acceleration less than 10(-3) g could yield crystals grown under diffusive transport. C1 RPI,DEPT MAT SCI & ENGN,TROY,NY 12180. NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP SINGH, NB (reprint author), WESTINGHOUSE ELECT CORP,CTR SCI & TECHNOL,PITTSBURGH,PA 15235, USA. OI Glicksman, Martin/0000-0002-2675-2759 NR 20 TC 12 Z9 12 U1 0 U2 4 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0146-3535 J9 PROG CRYST GROWTH CH JI Prog. Cryst. Growth Charact. Mater. PY 1993 VL 27 IS 3-4 BP 201 EP 231 DI 10.1016/0960-8974(93)90024-X PG 31 WC Crystallography; Materials Science, Characterization & Testing SC Crystallography; Materials Science GA NR049 UT WOS:A1993NR04900002 ER PT J AU HOLDEMAN, JD AF HOLDEMAN, JD TI MIXING OF MULTIPLE JETS WITH A CONFINED SUBSONIC CROSS-FLOW SO PROGRESS IN ENERGY AND COMBUSTION SCIENCE LA English DT Review ID TURBULENT JET; TRANSVERSE JET; FLOW; ENTRAINMENT; COMBUSTOR; DYNAMICS; FIELD; ROWS AB This paper summarizes experimental and computational results on the mixing of single, double, and opposed rows of jets with an isothermal or variable temperature mainstream in a confined subsonic crossflow. The studies from which these results came were performed to investigate flow and geometric variations typical of the complex three-dimensional flowfield in the dilution zone of combustion chambers in gas turbine engines. The principal observations from the experiments were that the momentum-flux ratio was the most significant flow variable, and that temperature distributions were similar, independent of orifice diameter, when the orifice spacing and the square-root of the momentum-flux ratio were inversely proportional. The experiments and empirical model for the mixing of a single row of jets from round holes were extended to include several variations typical of gas turbine combustors, namely variable temperature mainstream, flow area convergence, noncircular orifices, and double and opposed rows of jets, both in-line and staggered. All except the last of these were appropriately modeled with superposition or patches to the basic empirical model. Combinations of flow and geometry that gave optimum mixing were identified from the experimental and computational results. Based on the results of calculations made with a three-dimensional numerical model, the empirical model was further extended to model the effects of curvature and convergence. The principal conclusions from this study were that the orifice spacing and momentum-flux relationships were the same as observed previously in a straight duct, but the jet structure was significantly different for jets injected from the inner wall of a turn than for those injected from the outer wall. Also, curvature in the axial direction caused a drift of the jet trajectories toward the inner wall, but the mixing in a turning and converging channel did not seem to be inhibited by the convergence, independent of whether the contraction was radial or circumferential. The calculated jet penetration and mixing in an annulus were similar to those in a rectangular duct when the orifice spacing was specified at the radius dividing the annulus into equal areas. RP HOLDEMAN, JD (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 216 TC 85 Z9 85 U1 3 U2 20 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0360-1285 J9 PROG ENERG COMBUST JI Prog. Energy Combust. Sci. PY 1993 VL 19 IS 1 BP 31 EP 70 DI 10.1016/0360-1285(93)90021-6 PG 40 WC Thermodynamics; Energy & Fuels; Engineering, Chemical; Engineering, Mechanical SC Thermodynamics; Energy & Fuels; Engineering GA LP950 UT WOS:A1993LP95000002 ER PT J AU MINESHIGE, S KUSUNOSE, M AF MINESHIGE, S KUSUNOSE, M TI ON THE STABILITY OF IRRADIATED ACCRETION DISKS SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN LA English DT Article DE ACCRETION; INSTABILITIES; STARS, NEUTRON ID X-RAY BINARIES; BLACK-HOLES; INSTABILITY; OSCILLATIONS; SYSTEMS; MODEL AB The effects of external heating on the stability of hot accretion disks are studied in some detail. It is known that geometrically thin, optically thick, non-irradiated accretion disks have two distinct branches in the surface density - mass-accretion rate plane: the upper branch is radiation pressure-dominated and is unstable against thermal and secular perturbations, while the lower one is gas pressure-dominated and is stable. We show quite generally that even when disks are strongly irradiated, the upper branch remains unstable and the lower branch remains stable; the lower branch, however, can become radiation pressure-dominated, if the irradiating flux, F(irr), is kept constant. A stable, radiation pressure-dominated state thus appears. If F(irr) changes in proportion to the mass-accretion rate through the disk, on the other hand, the instabilities associated with radiation pressure-dominated disks cannot be removed. Some observational implications are discussed in the context of long-term variations of low-mass X-ray binaries. C1 IBARAKI UNIV,DEPT PHYS,BUNKYO KU,MITO,IBARAKI 310,JAPAN. NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,SPACE SCI LAB,HUNTSVILLE,AL 35812. NICHOLAS COPERNICUS ASTRON CTR,PL-00716 WARSAW,POLAND. RP MINESHIGE, S (reprint author), KYOTO UNIV,FAC SCI,DEPT ASTRON,SAKYO KU,KYOTO 60601,JAPAN. NR 19 TC 7 Z9 7 U1 0 U2 0 PU ASTRONOMICAL SOC JAPAN PI TOKYO PA C/O NATIONAL ASTRONOM OBSERV MITAKA-SHI, TOKYO 181, JAPAN SN 0004-6264 J9 PUBL ASTRON SOC JPN JI Publ. Astron. Soc. Jpn. PY 1993 VL 45 IS 1 BP 113 EP 118 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA KT048 UT WOS:A1993KT04800012 ER PT B AU MCGUIRE, JP KORECHOFF, RP AF MCGUIRE, JP KORECHOFF, RP BE Bilbro, JW Parks, RE TI TOLERANCING OF WIDE-FIELD PLANETARY CAMERA-II SO QUALITY AND RELIABILITY FOR OPTICAL SYSTEMS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Quality and Reliability for Optical Systems CY JUL 11-12, 1993 CL SAN DIEGO, 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 0-8194-1242-2 J9 P SOC PHOTO-OPT INS PY 1993 VL 1993 BP 100 EP 114 PG 15 WC Optics SC Optics GA BZ89G UT WOS:A1993BZ89G00011 ER PT B AU SOKOLOWSKI, W JACOBS, S LANE, M ODONNELL, T HSIEH, C AF SOKOLOWSKI, W JACOBS, S LANE, M ODONNELL, T HSIEH, C BE Bilbro, JW Parks, RE TI DIMENSIONAL STABILITY OF HIGH-PURITY INVAR 36 SO QUALITY AND RELIABILITY FOR OPTICAL SYSTEMS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Quality and Reliability for Optical Systems CY JUL 11-12, 1993 CL SAN DIEGO, CA SP SOC PHOTO OPT INSTRUMENTAT ENGINEERS C1 JET PROP LAB,PASADENA,CA 91109. NR 0 TC 0 Z9 0 U1 1 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-1242-2 J9 P SOC PHOTO-OPT INS PY 1993 VL 1993 BP 115 EP 126 DI 10.1117/12.164978 PG 12 WC Optics SC Optics GA BZ89G UT WOS:A1993BZ89G00012 ER PT B AU WILLIS, PB COULTER, DR AF WILLIS, PB COULTER, DR BE Bilbro, JW Parks, RE TI DURABILITY AND RELIABILITY OF LIGHTWEIGHT COMPOSITE MIRRORS FOR SPACE OPTICAL-SYSTEMS SO QUALITY AND RELIABILITY FOR OPTICAL SYSTEMS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Quality and Reliability for Optical Systems CY JUL 11-12, 1993 CL SAN DIEGO, 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 0-8194-1242-2 J9 P SOC PHOTO-OPT INS PY 1993 VL 1993 BP 127 EP 136 DI 10.1117/12.164979 PG 10 WC Optics SC Optics GA BZ89G UT WOS:A1993BZ89G00013 ER PT J AU BURSIK, MI GILLESPIE, AR AF BURSIK, MI GILLESPIE, AR TI LATE PLEISTOCENE GLACIATION OF MONO BASIN, CALIFORNIA SO QUATERNARY RESEARCH LA English DT Article ID EASTERN SIERRA-NEVADA; CHRONOLOGY; MORAINES; DEPOSITS; CANYON; AGES C1 JET PROP LAB, PASADENA, CA 91109 USA. UNIV WASHINGTON, REMOTE SENSING LAB, SEATTLE, WA 98195 USA. NR 39 TC 41 Z9 41 U1 0 U2 5 PU ACADEMIC PRESS INC ELSEVIER SCIENCE PI SAN DIEGO PA 525 B ST, STE 1900, SAN DIEGO, CA 92101-4495 USA SN 0033-5894 EI 1096-0287 J9 QUATERNARY RES JI Quat. Res. PD JAN PY 1993 VL 39 IS 1 BP 24 EP 35 DI 10.1006/qres.1993.1003 PG 12 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA KH646 UT WOS:A1993KH64600003 ER PT J AU RIND, D OVERPECK, J AF RIND, D OVERPECK, J TI HYPOTHESIZED CAUSES OF DECADE-TO-CENTURY-SCALE CLIMATE VARIABILITY - CLIMATE MODEL RESULTS SO QUATERNARY SCIENCE REVIEWS LA English DT Article ID NINO SOUTHERN OSCILLATION; OCEAN ATMOSPHERE MODEL; EL-NINO; NORTHERN-HEMISPHERE; SOLAR-CYCLE; SURFACE-TEMPERATURE; STRATOSPHERIC AEROSOLS; IRRADIANCE VARIATIONS; VOLCANIC-ERUPTIONS; GLACIER VARIATIONS AB There are at least five hypothesized causes of decadal to century-scale climate variability, both 'natural' and anthropogenically-induced: (1) inherent ('random') variability in the atmosphere (i.e. no external forcing); (2) inherent or forced variability in the ocean dynamical system (e.g. North Atlantic Deep Water fluctuations); (3) solar variability (e.g. the Maunder Minimum); (4) variability in volcanic aerosol loading of the atmosphere (e.g. Tambora); and (5) atmospheric trace gas variability (e.g. CO2 methane). Modeling experiments conducted for each of these potential mechanisms show that they have different signatures in time and space which may allow for discrimination in the climate record. The effects of variations in ocean thermohaline circulation are likely to be largest in those regions adjacent to and downwind of areas of deepwater formation. Decreased insolation and large low latitude volcanic eruptions affect all latitudes, including changes in Hadley cell-dominated low-latitude systems. In contrast, trace-gas induced warming is likely to be amplified at high latitudes, although still containing a significant low latitude effect. Each of the hypothesized causes may have been important, and it is likely that several may have acted in concert to produce the observed climate record. During the Holocene, natural global mean decade-to-century-scale variability is likely to have been limited to 0.5 to 1.0-degrees-C, and to have been non-uniformly distributed over the globe. These natural sources of climate variability are thus unlikely to counter future greenhouse warning in any long-term way. C1 NOAA, NATL GEOPHYS DATA CTR, PALEOCLIMATE PROGRAM, BOULDER, CO 80303 USA. RP GODDARD SPACE FLIGHT CTR, INST SPACE STUDIES, 2880 BROADWAY, NEW YORK, NY 10025 USA. NR 99 TC 149 Z9 154 U1 0 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0277-3791 J9 QUATERNARY SCI REV JI Quat. Sci. Rev. PY 1993 VL 12 IS 6 BP 357 EP 374 DI 10.1016/S0277-3791(05)80002-2 PG 18 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NK629 UT WOS:A1993NK62900002 ER PT J AU COLE, JE RIND, D FAIRBANKS, RG AF COLE, JE RIND, D FAIRBANKS, RG TI ISOTOPIC RESPONSES TO INTERANNUAL CLIMATE VARIABILITY SIMULATED BY AN ATMOSPHERIC GENERAL-CIRCULATION MODEL SO QUATERNARY SCIENCE REVIEWS LA English DT Article ID NINO SOUTHERN OSCILLATION; SURFACE-TEMPERATURE GRADIENT; EL-NINO; ICE CORE; WALKER CIRCULATION; VEIN CALCITE; PRECIPITATION; CYCLES; RECORD; CONTINENTALITY AB High-resolution isotopic records from remote tropical and temperate sites may provide new insights into recent climatic variability, but the interpretation of these records requires a thorough understanding of the controls on interannual variability in the isotopic content of precipitation. To investigate the relationship between isotopic variability and interannual climate change, we use the isotopic tracer version of the Goddard Institute for Space Studies (GISS) general circulation model (GCM). We generate interannual-type climate variability by specifying sea surface temperature (SST) anomalies observed during extreme cool (1955-1956) and warm (1982-1983) phases of the El Nino/Southern Oscillation (ENSO) system during January and July. In response to SST anomalies, the GCM simulates many tropical and extratropical climatic features typical of ENSO variability. Across the tropics, simulated isotopic anomalies correlate significantly with rainfall amount. At higher latitudes, altered pressure distributions set up surface wind changes that generate significant regional temperature anomalies. Extratropical deltaO-18 anomalies reach +/- 4-5 parts per thousand but in most regions do not correlate with temperature anomalies. We examine four regions from which interannual paleoclimatic and/or modem isotopic records are available: the tropical western Pacific, tropical South America, western-central Europe and the Tibetan Plateau. In the Pacific warm pool, the GCM quantitatively reproduces the observed inverse relationship between the amount and isotopic content of rainfall, which provides the basis for coral paleoclimatic reconstruction of ENSO-related rainfall anomalies. In tropical South America, isotopic anomalies also correlate strongly with precipitation amount, consistent with the hypothesis that air mass stability over the Amazon basin controls deltaO-18 variability downstream at the Quelccaya ice core site. In Europe, interannual temperature changes correlate positively with deltaO-18 anomalies, quantitatively consistent with long-term observations and supporting temperature-based interpretations of paleoclimatic records. On the Tibetan Plateau, isotopic variations do not correlate with local climatic anomalies nor with changes in oceanic vapor sources, suggesting a complex climatic signal in Tibetan ice cores possibly mediated by continental processes. In contrast to our interannual results, last glacial maximum (18 ka BP) simulations yield significant correlation between temperature and isotopic anomalies. The model thus suggests distinct modes of isotopic response to simulated climate variability that depend on the scale and processes of climate change. Interannual temperature changes often result from time-varying advective changes that can confound the relationship between temperature and isotopic variations, via changes in vapor sources and transport. The near-global temperature change associated with glacial-interglacial variations yields a more consistent pattern of isotopic variability because (1) the effects of large-scale cooling are integrated over the entire pathway of vapor transport and (2) the degree of cooling causes an isotopic response that exceeds the level of variability produced by advective changes. C1 COLUMBIA UNIV,DEPT GEOL SCI,NEW YORK,NY 10027. LAMONT DOHERTY EARTH OBSERV,PALISADES,NY 10964. NASA,GISS,NEW YORK,NY 10025. NR 59 TC 21 Z9 21 U1 1 U2 3 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0277-3791 J9 QUATERNARY SCI REV JI Quat. Sci. Rev. PY 1993 VL 12 IS 6 BP 387 EP 406 DI 10.1016/S0277-3791(05)80004-6 PG 20 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NK629 UT WOS:A1993NK62900004 ER PT J AU PETEET, DM DANIELS, RA HEUSSER, LE VOGEL, JS SOUTHON, JR NELSON, DE AF PETEET, DM DANIELS, RA HEUSSER, LE VOGEL, JS SOUTHON, JR NELSON, DE TI LATE-GLACIAL POLLEN, MACROFOSSILS AND FISH REMAINS IN NORTHEASTERN USA - THE YOUNGER DRYAS OSCILLATION SO QUATERNARY SCIENCE REVIEWS LA English DT Article ID LATE QUATERNARY VEGETATION; EASTERN NORTH-AMERICA; LAST DEGLACIATION; LATE-PLEISTOCENE; NEW-ENGLAND; CLIMATE; HISTORY; EVENT; SEDIMENTS; MASSACHUSETTS AB The late-glacial environmental histories of Allamuchy Pond, New Jersey and Linsley Pond, Connecticut are reconstructed from pollen, macrofossil and fish scale remains, Accelerator mass spectrometry (AMS) C-14 dating of seeds and needles indicates that the first organic deposition, evidenced by fossil Picea (spruce) needles, occurred approximately 12,400 BP. A major regional warming began in the northeastern United States at this time, correlative with the Bolling/Allerod warming of Europe and Greenland. The increase in Quercus (oak) pollen and presence of Pinus strobus (white pine) needles demonstrates the magnitude of warming reached at about 11,000 BP. The subsequent decline of thermophilous species and increase in boreal Picea, Abies (fir), Larix (larch), Betula papyrifera (paper birch) and Alnus (alder) from 10,800-10,000 BP was a regional vegetational reversal. Thus we find a North American expression of the Younger Dryas with a mean annual temperature depression of 3-4-degrees-C. The subsequent classical southern New England pine pollen zone 'B' and Pinus strobus signalled a return to warmer conditions at approximately 10,000 BP, regionally, within approximately 50-100 years. A large increase in Quercus follows. This study is unique in documenting a continuous late-glacial record of fish remains from Allamuchy Pond, New Jersey sediments, indicating that members of the families Centrarchidae (sunfish), Salmonidae (trout), Percidae (perch) and Cyprinidae (minnow) were regionally present. C1 COLUMBIA UNIV,LAMONT DOHERTY EARTH OBSERV,PALISADES,NY 10964. NEW YORK STATE MUSEUM & SCI SERV,BIOL SURVEY LAB,TROY,NY 12180. SIMON FRASER UNIV,DEPT ARCHAEOL,BURNABY V5A 1S6,BC,CANADA. RP PETEET, DM (reprint author), NASA,GODDARD SPACE FLIGHT CTR,INST SPACE STUDIES,2880 BROADWAY,NEW YORK,NY 10025, USA. NR 75 TC 56 Z9 58 U1 1 U2 13 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0277-3791 J9 QUATERNARY SCI REV JI Quat. Sci. Rev. PY 1993 VL 12 IS 8 BP 597 EP 612 DI 10.1016/0277-3791(93)90002-4 PG 16 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NW632 UT WOS:A1993NW63200002 ER PT J AU KNELLER, M PETEET, D AF KNELLER, M PETEET, D TI LATE-QUATERNARY CLIMATE IN THE RIDGE AND VALLEY OF VIRGINIA, USA - CHANGES IN VEGETATION AND DEPOSITIONAL ENVIRONMENT SO QUATERNARY SCIENCE REVIEWS LA English DT Article ID EASTERN NORTH-AMERICA; LAST DEGLACIATION; SEDIMENTS; HISTORY; POLLEN; LAKE; MACROFOSSILS; PLATEAU; GEORGIA; FLORIDA AB Brown Pond, Virginia, in the Ridge and Valley physiographic province, contains a record of changing vegetational and depositional environments that dates to 17,130 BP. Six cores were retrieved in a transect of the pond. Pollen and macrofossils were identified from the longest central core and a series of AMS radiocarbon dates obtained from identified macrofossils and sediment. The pollen and macrofossil record combined with laterally consistent changes in lithostratigraphy reveal a changing climate. From 17,300 to 14,100 BP, a closed boreal forest of Pinus-Picea-Abies grew at the site. Pinus dominates the pollen assemblage while Picea and Abies dominate the macrofossil assemblage. Subtle increases in more thermophilous and mesophytic taxa indicate gradual climate amelioration after the full-glacial. A marked increase in Alnus at 14, 100 BP signals an increase in moisture, possibly related to the global evidence for rapid climate change at 14,000 BP. At this central Appalachian site, Abies and Alnus are found in relatively greater amounts in the late-glacial forest than previous studies indicated. Low organic contents and evidence of gleyed conditions, seen in the core transect from 10,000 to 8000 BP, point towards low-water levels in the early Holocene-approximately coincident with the expansion of Quercus. C1 COLUMBIA UNIV,LAMONT DOHERTY EARTH OBSERV,PALISADES,NY 10964. COLUMBIA UNIV,DEPT GEOL SCI,PALISADES,NY 10964. RP KNELLER, M (reprint author), NASA,GODDARD INST SPACE STUDIES,2880 BROADWAY,NEW YORK,NY 10025, USA. OI Kneller, Margaret/0000-0002-8577-4421 NR 74 TC 22 Z9 22 U1 2 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0277-3791 J9 QUATERNARY SCI REV JI Quat. Sci. Rev. PY 1993 VL 12 IS 8 BP 613 EP 628 DI 10.1016/0277-3791(93)90003-5 PG 16 WC Geography, Physical; Geosciences, Multidisciplinary SC Physical Geography; Geology GA NW632 UT WOS:A1993NW63200003 ER PT J AU SIMONSEN, LC CUCINOTTA, FA ATWELL, W NEALY, JE AF SIMONSEN, LC CUCINOTTA, FA ATWELL, W NEALY, JE TI TEMPORAL ANALYSIS OF THE OCTOBER 1989 PROTON FLARE USING COMPUTERIZED ANATOMICAL MODELS SO RADIATION RESEARCH LA English DT Article ID INTERPLANETARY C1 ROCKWELL INT CORP,DIV SPACE SYST,HOUSTON,TX 77058. RP SIMONSEN, LC (reprint author), NASA,LANGLEY RES CTR,HAMPTON,VA 23665, USA. NR 21 TC 19 Z9 20 U1 0 U2 0 PU RADIATION RESEARCH SOC PI OAK BROOK PA 2021 SPRING RD, STE 600, OAK BROOK, IL 60521 SN 0033-7587 J9 RADIAT RES JI Radiat. Res. PD JAN PY 1993 VL 133 IS 1 BP 1 EP 11 DI 10.2307/3578250 PG 11 WC Biology; Biophysics; Radiology, Nuclear Medicine & Medical Imaging SC Life Sciences & Biomedicine - Other Topics; Biophysics; Radiology, Nuclear Medicine & Medical Imaging GA KK623 UT WOS:A1993KK62300001 PM 8381975 ER PT J AU FARMER, JD FARMER, MC BERGER, R AF FARMER, JD FARMER, MC BERGER, R TI RADIOCARBON AGES OF LACUSTRINE DEPOSITS IN VOLCANIC SEQUENCES OF THE LOMAS-COLORADAS AREA, SOCORRO ISLAND, MEXICO SO RADIOCARBON LA English DT Article ID EAST PACIFIC RISE; EVOLUTION; PETROLOGY AB Extensive eruptions of alkalic basalt from low-elevation fissures and vents on the southern flank of the dormant volcano, Cerro Evermann, accompanied the most recent phase of volcanic activity on Socorro Island, and created the Lomas Coloradas, a broad, gently sloping terrain comprising the southern part of the island. We obtained C-14 ages of 4690 +/- 270 BP (5000-5700 cal BP) and 5040 +/- 460 BP (5300-6300 cal BP) froM lacustrine deposits that occur within volcanic sequences of the lower Lomas Coloradas. Apparently, the sediments accumulated within a topographic depression between two scoria cones shortly after they formed. The lacustrine environment was destroyed when the cones were breached by headward erosion of adjacent stream drainages. This was followed by the eruption of a thin basaltic flow from fissures near the base of the northernmost cone. The flow moved downslope for a short distance and into the drainages that presently bound the study area on the east and west. The flow postdates development of the present drainage system and may be very recent. Our C-14 data, along with historical accounts of volcanic activity over the last century, including submarine eruptions that occurred a few km west of Socorro in early 1993, underscore the high risk for explosive volcanism in this region and the need for a detailed volcanic hazards plan and seismic monitoring. C1 UNIV CALIF LOS ANGELES,DEPT ANTHROPOL,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,DEPT GEOG,LOS ANGELES,CA 90024. UNIV CALIF LOS ANGELES,INST GEOPHYS & PLANETARY SCI,LOS ANGELES,CA 90024. RP FARMER, JD (reprint author), NASA,AMES RES CTR,MS-239-4,MOFFETT FIELD,CA 94035, USA. NR 30 TC 9 Z9 9 U1 0 U2 1 PU UNIV ARIZONA DEPT GEOSCIENCES PI TUCSON PA RADIOCARBON 4717 E FORT LOWELL RD, TUCSON, AZ 85712 SN 0033-8222 J9 RADIOCARBON JI Radiocarbon PY 1993 VL 35 IS 2 BP 253 EP 262 PG 10 WC Geochemistry & Geophysics SC Geochemistry & Geophysics GA LG927 UT WOS:A1993LG92700004 PM 11539414 ER PT B AU MAJORANA, LN SMITH, ST AF MAJORANA, LN SMITH, ST BE Chavez, PS Schowengerdt, RA TI WIDE-FIELD PLANETARY CAMERA-2 CALIBRATION SYSTEM CONFIGURATION AND PERFORMANCE CHARACTERIZATION SO RECENT ADVANCES IN SENSORS, RADIOMETRIC CALIBRATION, AND PROCESSING OF REMOTELY SENSED DATA SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Recent Advances in Sensors, Radiometric Calibration, and Processing of Remotely Sensed Data CY APR 14-16, 1993 CL ORLANDO, FL 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 0-8194-1174-4 J9 P SOC PHOTO-OPT INS PY 1993 VL 1938 BP 163 EP 175 DI 10.1117/12.161539 PG 13 WC Optics SC Optics GA BZ57A UT WOS:A1993BZ57A00017 ER PT B AU HANDLEY, TH RUBIN, MR LI, YP AF HANDLEY, TH RUBIN, MR LI, YP BE Chavez, PS Schowengerdt, RA TI DATAHUB - KNOWLEDGE-BASED SCIENCE DATA MANAGEMENT FOR EXPLORATORY DATA-ANALYSIS SO RECENT ADVANCES IN SENSORS, RADIOMETRIC CALIBRATION, AND PROCESSING OF REMOTELY SENSED DATA SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Recent Advances in Sensors, Radiometric Calibration, and Processing of Remotely Sensed Data CY APR 14-16, 1993 CL ORLANDO, FL 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 0-8194-1174-4 J9 P SOC PHOTO-OPT INS PY 1993 VL 1938 BP 389 EP 400 PG 12 WC Optics SC Optics GA BZ57A UT WOS:A1993BZ57A00038 ER PT J AU DUGAN, JB BAVUSO, SJ BOYD, MA AF DUGAN, JB BAVUSO, SJ BOYD, MA TI FAULT-TREES AND MARKOV-MODELS FOR RELIABILITY-ANALYSIS OF FAULT-TOLERANT DIGITAL-SYSTEMS SO RELIABILITY ENGINEERING & SYSTEM SAFETY LA English DT Article AB Reliability analysis of fault tolerant computer systems for critical applications is complicated by several factors. In this paper, we discuss these modeling difficulties and describe and demonstrate approaches to handling them. Three important techniques characterize our approach. First, behavioral decomposition separates the system failure modes specification from the recovery process specification. Second, a fault tree representation of the system failure modes is converted to an equivalent Markov model, to which the recovery models are added automatically. Third, the fault tree to Markov chain conversion allows the definition of new dynamic fault tree gates to capture the sequence dependent failure modes that are often associated with advanced fault tolerant systems. Two advanced fault tolerant computer systems are described, and fault tree models for their analysis are presented. HARP (the Hybrid Automated Reliability Predictor) is a software package developed at Duke University and NASA Langley Research Center that is used to analyze the example systems. C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23665. NASA,AMES RES CTR,MOFFETT FIELD,CA 94045. RP DUGAN, JB (reprint author), DUKE UNIV,DEPT COMP SCI,DURHAM,NC 27708, USA. NR 13 TC 44 Z9 47 U1 1 U2 5 PU ELSEVIER SCI LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, OXON, ENGLAND OX5 1GB SN 0951-8320 J9 RELIAB ENG SYST SAFE JI Reliab. Eng. Syst. Saf. PY 1993 VL 39 IS 3 BP 291 EP 307 DI 10.1016/0951-8320(93)90005-J PG 17 WC Engineering, Industrial; Operations Research & Management Science SC Engineering; Operations Research & Management Science GA KJ574 UT WOS:A1993KJ57400005 ER PT S AU MENENTI, M AF MENENTI, M BE Gower, JFR Salomonson, VV Engman, ET Ormsby, JP Gupta, RK TI UNDERSTANDING LAND SURFACE EVAPOTRANSPIRATION WITH SATELLITE MULTISPECTRAL MEASUREMENTS SO REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, EUROPEAN SPACE AGCY, SCI COMM OCEAN RES, WORLD METEOROL ORG, INT UNION GEODESY & GEOPHYS, INT ASSOC HYDROL SCI, INT ASTRONAUT FEDERAT, UN ENVIRONM PROGRAMME RP MENENTI, M (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GSFC,HYDROSPHER PROC LAB,GREENBELT,MD 20771, USA. OI Menenti, Massimo/0000-0001-9176-4556 NR 0 TC 11 Z9 11 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042201-2 J9 ADV SPACE RES PY 1993 VL 13 BP 89 EP 100 DI 10.1016/0273-1177(93)90533-H PG 12 WC Agronomy; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources SC Agriculture; Geology; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources GA BY02T UT WOS:A1993BY02T00011 ER PT S AU ORMSBY, JP ENGMAN, ET AF ORMSBY, JP ENGMAN, ET BE Gower, JFR Salomonson, VV Engman, ET Ormsby, JP Gupta, RK TI HYDROSAT - AN INSTRUMENT PLATFORM FOR HYDROLOGY SO REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, EUROPEAN SPACE AGCY, SCI COMM OCEAN RES, WORLD METEOROL ORG, INT UNION GEODESY & GEOPHYS, INT ASSOC HYDROL SCI, INT ASTRONAUT FEDERAT, UN ENVIRONM PROGRAMME RP ORMSBY, JP (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HYDROSPHER PROC LAB,CODE 970,GREENBELT,MD 20771, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042201-2 J9 ADV SPACE RES PY 1993 VL 13 BP 101 EP 104 DI 10.1016/0273-1177(93)90534-I PG 4 WC Agronomy; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources SC Agriculture; Geology; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources GA BY02T UT WOS:A1993BY02T00012 ER PT S AU ONEILL, PE JACKSON, TJ CHAUHAN, NS SEYFRIED, MS AF ONEILL, PE JACKSON, TJ CHAUHAN, NS SEYFRIED, MS BE Gower, JFR Salomonson, VV Engman, ET Ormsby, JP Gupta, RK TI MICROWAVE SOIL-MOISTURE ESTIMATION IN HUMID AND SEMIARID WATERSHEDS SO REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, EUROPEAN SPACE AGCY, SCI COMM OCEAN RES, WORLD METEOROL ORG, INT UNION GEODESY & GEOPHYS, INT ASSOC HYDROL SCI, INT ASTRONAUT FEDERAT, UN ENVIRONM PROGRAMME RP ONEILL, PE (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GSFC,HYDROSPHER PROC LAB,HYDROL SCI BRANCH 974,GREENBELT,MD 20771, USA. RI O'Neill, Peggy/D-2904-2013 NR 0 TC 4 Z9 5 U1 0 U2 1 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042201-2 J9 ADV SPACE RES PY 1993 VL 13 BP 115 EP 118 DI 10.1016/0273-1177(93)90536-K PG 4 WC Agronomy; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources SC Agriculture; Geology; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources GA BY02T UT WOS:A1993BY02T00014 ER PT S AU MENENTI, M AZZALI, S VERHOEF, W VANSWOL, R AF MENENTI, M AZZALI, S VERHOEF, W VANSWOL, R BE Gower, JFR Salomonson, VV Engman, ET Ormsby, JP Gupta, RK TI MAPPING AGROECOLOGICAL ZONES AND TIME-LAG IN VEGETATION GROWTH BY MEANS OF FOURIER-ANALYSIS OF TIME-SERIES OF NDVI IMAGES SO REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, EUROPEAN SPACE AGCY, SCI COMM OCEAN RES, WORLD METEOROL ORG, INT UNION GEODESY & GEOPHYS, INT ASSOC HYDROL SCI, INT ASTRONAUT FEDERAT, UN ENVIRONM PROGRAMME RP MENENTI, M (reprint author), NASA,GODDARD SPACE FLIGHT CTR,GSFC,HYDROSPHER PROC LAB,GREENBELT,MD 20771, USA. RI Verhoef, Wouter/D-4399-2009; OI Menenti, Massimo/0000-0001-9176-4556 NR 0 TC 72 Z9 81 U1 1 U2 5 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042201-2 J9 ADV SPACE RES PY 1993 VL 13 BP 233 EP 237 DI 10.1016/0273-1177(93)90550-U PG 5 WC Agronomy; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources SC Agriculture; Geology; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources GA BY02T UT WOS:A1993BY02T00027 ER PT S AU MYNENI, RB CHOUDHURY, BJ AF MYNENI, RB CHOUDHURY, BJ BE Gower, JFR Salomonson, VV Engman, ET Ormsby, JP Gupta, RK TI SYNERGISTIC USE OF OPTICAL AND MICROWAVE DATA IN AGROMETEOROLOGICAL APPLICATIONS SO REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE SE ADVANCES IN SPACE RESEARCH LA English DT Proceedings Paper CT SYMP ON REMOTE SENSING FOR OCEANOGRAPHY, HYDROLOGY AND AGRICULTURE, AT THE COSPAR 29TH PLENARY MEETING CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, EUROPEAN SPACE AGCY, SCI COMM OCEAN RES, WORLD METEOROL ORG, INT UNION GEODESY & GEOPHYS, INT ASSOC HYDROL SCI, INT ASTRONAUT FEDERAT, UN ENVIRONM PROGRAMME RP MYNENI, RB (reprint author), NASA,GODDARD SPACE FLIGHT CTR,BIOSPHER SCI BRANCH,MAIL CODE 923,GREENBELT,MD 20771, USA. RI Myneni, Ranga/F-5129-2012 NR 0 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA OXFORD SN 0273-1177 BN 0-08-042201-2 J9 ADV SPACE RES PY 1993 VL 13 BP 239 EP 248 DI 10.1016/0273-1177(93)90551-L PG 10 WC Agronomy; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources SC Agriculture; Geology; Meteorology & Atmospheric Sciences; Oceanography; Imaging Science & Photographic Technology; Water Resources GA BY02T UT WOS:A1993BY02T00028 ER PT S AU OWE, M VANDEGRIEND, AA AF OWE, M VANDEGRIEND, AA BE Kahle, AB Njoku, EJ Palluconi, FD Gillespie, AR Hook, SJ Hayden, CM Tsuchiya, K Dozier, J TI GROUND-BASED MEASUREMENT OF SURFACE-TEMPERATURE AND THERMAL EMISSIVITY SO REMOTE SENSING OF EARTHS SURFACE AND ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT COSPAR Interdisciplinary Scientific Commission A of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, NASA, WORLD METEOROL ORG, SCI COMM OCEAN RES, INT ASTRON FED, CTR NATL ETUDES SPATIALES, UNESCO AB Motorized cable systems for transporting infrared thermometers have been used successfully during several international field campaigns. Systems may be configured with as many as four thermal sensors up to 9 m above the surface, and traverse a 30 m transect. Ground and canopy temperatures are important for solving the surface energy balance. The spatial variability of surface temperature is often great, so that averaged point measurements result in highly inaccurate areal estimates. The cable systems are ideal for quantifying both temporal and spatial variabilities. Thermal emissivity is also necessary for deriving the absolute physical temperature, and measurements may be made with a portable measuring box. C1 VRIJE UNIV,FAC EARTH SCI,1081 HV AMSTERDAM,NETHERLANDS. RP OWE, M (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HYDROL SCI BRANCH,GREENBELT,MD 20771, USA. NR 10 TC 2 Z9 2 U1 0 U2 0 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042477-5 J9 ADV SPACE RES PY 1993 VL 14 IS 3 BP 45 EP 48 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78D UT WOS:A1993BZ78D00007 ER PT S AU WAN, Z NG, D DOZIER, J AF WAN, Z NG, D DOZIER, J BE Kahle, AB Njoku, EJ Palluconi, FD Gillespie, AR Hook, SJ Hayden, CM Tsuchiya, K Dozier, J TI SPECTRAL EMISSIVITY MEASUREMENTS OF LAND-SURFACE MATERIALS AND RELATED RADIATIVE-TRANSFER SIMULATIONS SO REMOTE SENSING OF EARTHS SURFACE AND ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT COSPAR Interdisciplinary Scientific Commission A of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, NASA, WORLD METEOROL ORG, SCI COMM OCEAN RES, INT ASTRON FED, CTR NATL ETUDES SPATIALES, UNESCO AB Spectral radiance measurements have been made in the laboratory and in the field for deriving spectral emissivities of some land cover samples with a spectroradiometer and an auxiliary radiation source in the wavelength range 2.5-14.5 mu m. A easy and quick four-step method (four steps to measure the sample and a diffuse reflecting plate surface under sunshine and shadowing conditions, respectively) has been used for simultaneous determination of surface temperature and emissivity. We emphasized In-situ measurements in combination with radiative transfer simulations, and an error analysis for basic assumptions in deriving spectral emissivity of land-surface samples from thermal infrared measurements. C1 NASA,LEWIS RES CTR,CLEVELAND,OH 44135. RP WAN, Z (reprint author), UNIV CALIF SANTA BARBARA,CTR REMOTE SENSING & ENVIRONM OPT,SANTA BARBARA,CA 93106, USA. RI Dozier, Jeff/B-7364-2009 OI Dozier, Jeff/0000-0001-8542-431X NR 10 TC 0 Z9 0 U1 0 U2 6 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042477-5 J9 ADV SPACE RES PY 1993 VL 14 IS 3 BP 91 EP 94 PG 4 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78D UT WOS:A1993BZ78D00013 ER PT S AU THEON, JS AF THEON, JS BE Kahle, AB Njoku, EJ Palluconi, FD Gillespie, AR Hook, SJ Hayden, CM Tsuchiya, K Dozier, J TI THE TROPICAL RAINFALL MEASURING MISSION (TRMM) SO REMOTE SENSING OF EARTHS SURFACE AND ATMOSPHERE SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT COSPAR Interdisciplinary Scientific Commission A of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, NASA, WORLD METEOROL ORG, SCI COMM OCEAN RES, INT ASTRON FED, CTR NATL ETUDES SPATIALES, UNESCO AB The Tropical Rainfall Measuring Mission (TRMM) is a cooperative effort between NASDA of Japan and NASA of the USA. TRMM is designed to measure rain rates from space using a combination of high resolution radar, passive microwave radiometer and visible-infrared radiometer measurements from a spacecraft in a rapid precession, 350 km orbit inclined at 35 deg. These measurements, averaged over a 500 km grid for a month, are expected to provide monthly mean rainfall to an accuracy of 10 - 15 percent. TRMM will also make it possible to analyze the diurnal component of the rainfall and to derive the vertical distribution of latent heating. An accurate measure of the oceanic rainfall distribution will provide unprecedented insight into the halocline distribution and the stability of the oceanic surface layers. A status of the program is presented. RP THEON, JS (reprint author), NASA,WASHINGTON,DC 20546, USA. NR 4 TC 4 Z9 4 U1 1 U2 3 PU PERGAMON PRESS LTD PI OXFORD PA THE BOULEVARD LANGFORD LANE KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0273-1177 BN 0-08-042477-5 J9 ADV SPACE RES PY 1993 VL 14 IS 3 BP 159 EP 165 PG 7 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences; Remote Sensing SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences; Remote Sensing GA BZ78D UT WOS:A1993BZ78D00025 ER PT J AU HAY, BJ MCCLAIN, CR PETZOLD, M AF HAY, BJ MCCLAIN, CR PETZOLD, M TI AN ASSESSMENT OF THE NIMBUS-7/CZCS CALIBRATION FOR MAY 1986 USING SATELLITE AND INSITU DATA FROM THE ARABIAN SEA SO REMOTE SENSING OF ENVIRONMENT LA English DT Article ID ZONE COLOR SCANNER; RADIOMETRIC SENSITIVITY; PHYTOPLANKTON; CZCS; CHLOROPHYLL; ATLANTIC; IMAGERY; OCEAN AB During the intermonsoon period in May, pigment concentrations in the Arabian Sea are uniformly low, winds are light, and the atmosphere is relatively clear. During May 1986, a hydrographic survey of the central Arabian Sea was conducted, and stations were coordinated with Nimbus-7/Coastal Zone Color Scanner (CZCS) overpasses. Because the calibration of the CZCS degraded severely during its lifetime (October 1978 to June 1986), pigment concentrations from 35 samples at four sites in the Arabian Sea are used to refine the calibration of the CZCS using a ''vicarious'' calibration technique. This calibration provides a final estimate of the sensor's sensitivity loss for sensor Gain 2. The results show that the sensitivity losses during May 1986 were roughly 35%, 16%, and 9% at 433 nm, 520 nm, and 550 nm, respectively. Additional comparisons were made with the calibration used in the NASA CZCS global processing for May 1986. Assuming the same calibration correction at 670 nm as was used in the global processing, the global processing calibrations for 520 nm and 550 nm were found to be correct, but the calibration correction at 443 nm was found to overestimate the total radiance. Profiles of pigment concentration, temperature, salinity, and light attenuation are also used to describe the bio-optical characteristics of the Arabian Sea during the intermonsoon period as they pertain to the calibration. C1 WOODS HOLE OCEANOG INST,WOODS HOLE,MA 02543. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. UNIV HAMBURG,INST BIOGEOCHEM & MEERESCHEM,W-2000 HAMBURG 13,GERMANY. NR 32 TC 7 Z9 7 U1 0 U2 0 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0034-4257 J9 REMOTE SENS ENVIRON JI Remote Sens. Environ. PD JAN PY 1993 VL 43 IS 1 BP 35 EP 46 DI 10.1016/0034-4257(93)90062-3 PG 12 WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology GA KG602 UT WOS:A1993KG60200004 ER PT J AU GIBBS, DP BETTY, CL FUNG, AK BLANCHARD, AJ IRONS, JR BALSAM, WL AF GIBBS, DP BETTY, CL FUNG, AK BLANCHARD, AJ IRONS, JR BALSAM, WL TI AUTOMATED MEASUREMENT OF POLARIZED BIDIRECTIONAL REFLECTANCE SO REMOTE SENSING OF ENVIRONMENT LA English DT Article ID FACTOR DISTRIBUTIONS; LEAF REFLECTANCE; SPECTROSCOPY; VEGETATION; ASSUMPTION; CANOPY AB An Automated Bidirectional Reflectance Acquisition Measurement System (ABRAMS) has been constructed to facilitate measurement of bidirectional reflectance from soil and vegetative samples in the laboratory. The system illuminates a sample with linearly-polarized laser light, lambda = 632.8 nm, and measures the like- and cross-polarized scattered intensities over half a hemisphere. System design and polarized bidirectional reflectance measurements from a soil sample and SiO2 spherical particles are discussed in this work. It is shown that polarization information in the plane of incidence is useful for identifying certain scattering mechanisms associated with soil reflectance. This is because the like-polarized intensity, I(VV), is influenced by single-scattered light and the cross-polarized intensity, I(HV), is strongly influenced by multiple-scattered light. For example, comparable levels of I(VV) and I(HV), indicated that the reflectance of soils, especially those made up of translucent particles, is dominated by significant multiple scattering because single scattering causes minimal depolarization in the plane of incidence. Furthermore, I(HV) is less dependent on the illumination angle (hence, more Lambertian) than I(VV), indicating that the scattering mechanisms which caused them are not the same. C1 HOUSTON ADV RES CTR,THE WOODLANDS,TX. NASA,GODDARD SPACE FLIGHT CTR,BIOSPHER SCI BRANCH,GREENBELT,MD 20771. UNIV TEXAS,DEPT GEOL,ARLINGTON,TX 76019. RP GIBBS, DP (reprint author), UNIV TEXAS,DEPT ELECT ENGN,WAVE SCATTERING RES CTR,BOX 19016,ARLINGTON,TX 76019, USA. RI Irons, James/D-8535-2012 NR 46 TC 12 Z9 17 U1 1 U2 4 PU ELSEVIER SCIENCE INC PI NEW YORK PA 655 AVENUE OF THE AMERICAS, NEW YORK, NY 10010 SN 0034-4257 J9 REMOTE SENS ENVIRON JI Remote Sens. Environ. PD JAN PY 1993 VL 43 IS 1 BP 97 EP 114 DI 10.1016/0034-4257(93)90067-8 PG 18 WC Environmental Sciences; Remote Sensing; Imaging Science & Photographic Technology SC Environmental Sciences & Ecology; Remote Sensing; Imaging Science & Photographic Technology GA KG602 UT WOS:A1993KG60200009 ER PT J AU CALLAS, JL MAHONEY, WA VARNELL, LS WHEATON, WA AF CALLAS, JL MAHONEY, WA VARNELL, LS WHEATON, WA TI HIGH-RESOLUTION IMAGING GAMMA-RAY SPECTROSCOPY WITH EXTERNALLY SEGMENTED GERMANIUM DETECTORS SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Article ID GALACTIC-CENTER REGION; POSITRON-ANNIHILATION RADIATION; SPECTRUM AB Externally segmented germanium detectors promise a breakthrough in gamma-ray imaging capabilities while retaining the superb energy resolution of germanium spectrometers. An angular resolution of 0.2-degrees becomes practical by combining position-sensitive germanium detectors having a segment thickness of a few millimeters with a one-dimensional coded aperture located about a meter from the detectors. Correspondingly higher angular resolutions are possible with larger separations between the detectors and the coded aperture. Two-dimensional images can be obtained by rotating the instrument. Although the basic concept is similar to optical or x-ray coded-aperture imaging techniques, several complicating effects arise because of the penetrating nature of gamma rays. The complications include partial transmission through the coded aperture elements, Compton scattering in the germanium detectors, and high background count rates. Extensive electron-photon Monte Carlo modeling of a realistic detector/coded-aperture/collimator system has been performed. Results show that these complicating effects can be characterized and accounted for with no significant loss in instrument sensitivity. RP CALLAS, JL (reprint author), JET PROP LAB,4800 OAK GROVE DR,PASADENA,CA 91109, USA. NR 31 TC 2 Z9 2 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0034-6748 J9 REV SCI INSTRUM JI Rev. Sci. Instrum. PD JAN PY 1993 VL 64 IS 1 BP 143 EP 153 DI 10.1063/1.1144428 PG 11 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA KG744 UT WOS:A1993KG74400022 ER PT J AU BOWLES, KJ JAYNE, D LEONHARDT, TA AF BOWLES, KJ JAYNE, D LEONHARDT, TA TI ISOTHERMAL AGING EFFECTS ON PMR-15 RESIN SO SAMPE QUARTERLY-SOCIETY FOR THE ADVANCEMENT OF MATERIAL AND PROCESS ENGINEERING LA English DT Article AB Specimens of PMR-15 polyimide neat resin were aged in air at temperatures of 288, 316, and 343-degrees-C. Weight losses and dimensional changes were monitored during the course of the exposure time. Physical changes were also observed by optical and electron microscopy. As a result of this study, it was found that polyimide polymer degradation occurred within a thin surface layer that developed and grew during thermal aging. The cores of the polymer specimens were protected from oxidative degradation, and they were relatively unchanged by the thermal treatment. Surface cracking was observed at 343-degrees-C and was probably due to an interaction between voids and stresses that developed in the surface layer. C1 CASE WESTERN RESERVE UNIV,CLEVELAND,OH 44106. SVERDRUP TECHNOL INC,LEWIS RES CTR GRP,BROOK PK,OH. RP BOWLES, KJ (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 6 TC 33 Z9 34 U1 1 U2 3 PU SAMPE PUBLISHERS PI COVINA PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 SN 0036-0821 J9 SAMPE QUART PD JAN PY 1993 VL 24 IS 2 BP 2 EP 9 PG 8 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA KJ703 UT WOS:A1993KJ70300001 ER PT J AU BOWLES, KJ AF BOWLES, KJ TI TRANSVERSE FLEXURAL TESTS AS A TOOL FOR ASSESSING DAMAGE TO PMR-15 COMPOSITES FROM ISOTHERMAL AGING IN AIR AT ELEVATED-TEMPERATURES SO SAMPE QUARTERLY-SOCIETY FOR THE ADVANCEMENT OF MATERIAL AND PROCESS ENGINEERING LA English DT Article ID GRAPHITE EPOXY COMPOSITES; FIBER-MATRIX ADHESION; MECHANICAL-PROPERTIES; BEHAVIOR AB To date, the effect of thermo-oxidative aging on unidirectional composite mechanical properties has been monitored by the measurement of interlaminar shear strength (ILSS) and either three or four point longitudinal flexural strength (LFS) of the composites being tested. Both test results are affected by the fiber-to-matrix bonding, the former being dependent on the shear resistance of the interface and the latter on the degree of load sharing by the fibers through the fiber/matrix interface. Recently, fiber/matrix interfacial bond strengths have been monitored using a transverse flexural strength (TFS) test method. This test method was used to evaluate the effect of fiber surface treatment on the fiber/matrix bond The interface bonding was varied in these tests using Hercules A-fibers with three types of surfaces that produce bonds of poor, better, and good quality. The TFS was found not only to be sensitive to the bonding, but also to the aging time of unidirectional A-fiber/PMR-15 composites. This relationship reflects the mechanism by which the PMR-15 degrades during thermal aging. RP BOWLES, KJ (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 7 TC 8 Z9 8 U1 0 U2 1 PU SAMPE PUBLISHERS PI COVINA PA 1161 PARKVIEW DRIVE, COVINA, CA 91722 SN 0036-0821 J9 SAMPE QUART PD JAN PY 1993 VL 24 IS 2 BP 49 EP 53 PG 5 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA KJ703 UT WOS:A1993KJ70300007 ER PT S AU COLOMBO, OL AF COLOMBO, OL BE Zielinski, JB TI PRECISE GPS ORBITS FOR GEODESY SO SATELLITE ORBITS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Topical Meeting of the COSPAR Technical Panel on Satellite Dynamics (Meeting P1) of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT ASTRONAUT FEDERAT, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON AB The Global Positioning System (GPS) has become, in recent years, the main space-based system for surveying and navigation in many military, commercial, cadastral, mapping, and scientific applications. Better receivers, interferometric techniques (DGPS), and advances in post-processing methods have made possible to position fixed or moving receivers with sub-decimeter accuracies in a global reference frame. Improved methods for obtaining the orbits of the GPS satellites have played a major role in these achievements; this paper gives a personal view of the main developments in GPS orbit determination. RP COLOMBO, OL (reprint author), NASA,GODDARD SPACE FLIGHT CTR,UNIV MARYLAND,DEPT ASTRON,CODE 926,GREENBELT,MD 20771, USA. NR 9 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 0-08-042479-1 J9 ADV SPACE RES PY 1993 VL 14 IS 5 BP 5 EP 15 PG 11 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA07B UT WOS:A1993BA07B00002 ER PT S AU ROBBINS, JW SMITH, DE KOLENKIEWICZ, R AF ROBBINS, JW SMITH, DE KOLENKIEWICZ, R BE Zielinski, JB TI TRACKING STRATEGIES FOR LASER RANGING TO MULTIPLE SATELLITE TARGETS SO SATELLITE ORBITS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Topical Meeting of the COSPAR Technical Panel on Satellite Dynamics (Meeting P1) of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT ASTRONAUT FEDERAT, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON AB By the middle of the decade, several new laser geodynamic satellites will be launched to join the current constellation comprised of LAGEOS (US), Starlette (France), Ajisai (Japan), and Etalon I and II (USSR). The satellites to be launched, LAGEOS II and III (US and Italy), and Stella (France), will be injected into orbits that differ from the existing constellation so that geodetic and gravimetric quantities are sampled to enhance their resolution and accuracy. An examination of various possible tracking strategies adopted by the network of laser tracking stations has revealed that the recovery of precise geodetic parameters can be obtained over shorter intervals than is currently obtainable with the present constellation of satellites. This is particularly important in the planning of mobile laser tracking operations, given a network of permanently operating tracking sites. Through simulations, it is shown that laser tracking of certain satellite passes, pre-selected to provide optimal sky-coverage, provides the means to acquire a sufficient amount of data to allow the recovery of 1 cm station positions. C1 NASA,GODDARD SPACE FLIGHT CTR,TERR PHYS LAB,GREENBELT,MD 20771. RP ROBBINS, JW (reprint author), HUGHES STX CORP,4400 FORBES BLVD,LANHAM,MD 20706, USA. NR 3 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 0-08-042479-1 J9 ADV SPACE RES PY 1993 VL 14 IS 5 BP 27 EP 33 PG 7 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA07B UT WOS:A1993BA07B00004 ER PT S AU HUNG, RJ LEE, CC LESLIE, FW AF HUNG, RJ LEE, CC LESLIE, FW BE Zielinski, JB TI DYNAMIC GRAVITY PROBE-B SPACECRAFT DUE TO GRAVITY JITTER INDUCED CRYOGENIC HELIUM DISTURBANCES IN ROTATING DEWAR SO SATELLITE ORBITS SE ADVANCES IN SPACE RESEARCH LA English DT Article; Proceedings Paper CT Topical Meeting of the COSPAR Technical Panel on Satellite Dynamics (Meeting P1) of the COSPAR 29th Plenary Meeting CY AUG 28-SEP 05, 1992 CL WASHINGTON, DC SP COMM SPACE RES, INT ASTRONAUT FEDERAT, INT UNION GEODESY & GEOPHYS, INT ASSOC GEOMAGNETISM & AERON ID SLOSH WAVES; MICROGRAVITY ENVIRONMENT; GEYSER INITIATION; LIQUID-HYDROGEN; REORIENTATION; ACCELERATION; EXCITATION; BUBBLE; SYSTEM; FLUID AB The dynamical behavior of fluids, in particular the effect of surface tension on partially-filled rotating fluids (cryogenic liquid helium and helium vapor) in a full scale Gravity Probe-B Spacecraft propellant dewar tank imposed by various frequencies of gravity jitters have been investigated. The study shows that slosh waves excited inside the spacecraft propellant tank are characterized by the lowest frequency of the waves initiated, frequencies of the gravity jitters imposed on the propellant system, the levels of background gravity environment, and dewar rotating speeds. Conditions for suppression and amplification of the slosh waves are discussed. It also shows that fluid stress distribution exerted on the walls of the rotating dewar are closely related to the characteristics of slosh waves excited on the liquid-vapor interface in the rotating dewar tank. This can provide a set of data leading toward the control of spacecraft imbalance caused by the uneven fluid stress distribution from slosh waves C1 NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,HUNTSVILLE,AL 35812. RP HUNG, RJ (reprint author), UNIV ALABAMA,HUNTSVILLE,AL 35899, USA. NR 26 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 0-08-042479-1 J9 ADV SPACE RES PY 1993 VL 14 IS 5 BP 115 EP 122 PG 8 WC Engineering, Aerospace; Astronomy & Astrophysics; Geosciences, Multidisciplinary; Meteorology & Atmospheric Sciences SC Engineering; Astronomy & Astrophysics; Geology; Meteorology & Atmospheric Sciences GA BA07B UT WOS:A1993BA07B00013 ER PT J AU WHITTENBERGER, JD NATHAL, MV BOOK, PO AF WHITTENBERGER, JD NATHAL, MV BOOK, PO TI CREEP-RUPTURE STRENGTH OF A NI-BASE SUPERALLOY AT 1400-K SO SCRIPTA METALLURGICA ET MATERIALIA LA English DT Article ID SINGLE-CRYSTAL C1 CLEVELAND STATE UNIV,DEPT CHEM ENGN,CLEVELAND,OH 44115. RP WHITTENBERGER, JD (reprint author), NASA,LEWIS RES CTR,CLEVELAND,OH 44135, USA. NR 10 TC 6 Z9 6 U1 1 U2 2 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0956-716X J9 SCRIPTA METALL MATER JI Scr. Metall. Materialia PD JAN 1 PY 1993 VL 28 IS 1 BP 53 EP 58 DI 10.1016/0956-716X(93)90536-2 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA KD761 UT WOS:A1993KD76100010 ER PT B AU MAGHAMI, PG GUPTA, S JOSHI, SM WALZ, JE AF MAGHAMI, PG GUPTA, S JOSHI, SM WALZ, JE GP IEEE, CONTROL SYST SOC TI EXPERIMENTAL VALIDATION OF OPTIMIZATION-BASED INTEGRATED CONTROLS-STRUCTURES DESIGN METHODOLOGY FOR FLEXIBLE SPACE STRUCTURES SO SECOND IEEE CONFERENCE ON CONTROL APPLICATIONS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 2nd IEEE Conference on Control Applications CY SEP 13-16, 1993 CL VANCOUVER, CANADA SP IEEE, CONTROL SYST SOC C1 NASA,LANGLEY RES CTR,HAMPTON,VA 23681. 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 0-7803-0908-1 PY 1993 BP 7 EP 14 PG 8 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BA20D UT WOS:A1993BA20D00002 ER PT B AU BAYARD, DS BOUSSALIS, D AF BAYARD, DS BOUSSALIS, D GP IEEE, CONTROL SYST SOC TI NONCOLLOCATED STRUCTURAL VIBRATION SUPPRESSION USING ZERO ANNIHILATION PERIODIC CONTROL SO SECOND IEEE CONFERENCE ON CONTROL APPLICATIONS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 2nd IEEE Conference on Control Applications CY SEP 13-16, 1993 CL VANCOUVER, CANADA SP IEEE, CONTROL SYST 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 0-7803-0908-1 PY 1993 BP 141 EP 146 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BA20D UT WOS:A1993BA20D00025 ER PT B AU BOUSSALIS, D WANG, SJ AF BOUSSALIS, D WANG, SJ GP IEEE, CONTROL SYST SOC TI MULTIVARIABLE NEURAL-NETWORK VIBRATION CONTROL-BASED ON OUTPUT-FEEDBACK SO SECOND IEEE CONFERENCE ON CONTROL APPLICATIONS, VOLS 1 AND 2 LA English DT Proceedings Paper CT 2nd IEEE Conference on Control Applications CY SEP 13-16, 1993 CL VANCOUVER, CANADA SP IEEE, CONTROL SYST 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 0-7803-0908-1 PY 1993 BP 345 EP 350 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BA20D UT WOS:A1993BA20D00054 ER EF