FN Thomson Reuters Web of Science™ VR 1.0 PT B AU Stokes, KL Tritt, TM FullerMora, WW Ehrlich, AC Jacobsen, RL AF Stokes, KL Tritt, TM FullerMora, WW Ehrlich, AC Jacobsen, RL GP IEEE TI Electronic transport properties of highly conducting vapor-grown carbon fiber composites SO PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS LA English DT Proceedings Paper CT 15th International Conference on Thermoelectrics (ICT 96) CY MAR 26-29, 1996 CL PASADENA, CA SP Int Thermoelect Soc, IEEE, IEEE, Components Packaging & Mfg Technol Soc, Cal Tech, Jet Propuls Lab, Thermoelect Team, USN, Off Naval Res, US DOE C1 USN,RES LAB,DIV MAT SCI,WASHINGTON,DC 20375. NR 0 TC 5 Z9 5 U1 1 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3221-0 PY 1996 BP 164 EP 167 DI 10.1109/ICT.1996.553284 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BG49X UT WOS:A1996BG49X00033 ER PT B AU FullerMora, WW Stokes, KL Tritt, TM Ehrlich, AC Liu, JZ Shelton, RN AF FullerMora, WW Stokes, KL Tritt, TM Ehrlich, AC Liu, JZ Shelton, RN GP IEEE TI Electronic transport properties of PrBa2Cu3-xGaxO7-delta SO PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS LA English DT Proceedings Paper CT 15th International Conference on Thermoelectrics (ICT 96) CY MAR 26-29, 1996 CL PASADENA, CA SP Int Thermoelect Soc, IEEE, IEEE, Components Packaging & Mfg Technol Soc, Cal Tech, Jet Propuls Lab, Thermoelect Team, USN, Off Naval Res, US DOE C1 USN,RES LAB,MAT PHYS BRANCH,WASHINGTON,DC 20375. 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 0-7803-3221-0 PY 1996 BP 180 EP 182 DI 10.1109/ICT.1996.553288 PG 3 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BG49X UT WOS:A1996BG49X00037 ER PT B AU LinChung, PJ Rajagopal, AK AF LinChung, PJ Rajagopal, AK GP IEEE TI Thermoelectric power in disordered mixed crystals SO PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS LA English DT Proceedings Paper CT 15th International Conference on Thermoelectrics (ICT 96) CY MAR 26-29, 1996 CL PASADENA, CA SP Int Thermoelect Soc, IEEE, IEEE, Components Packaging & Mfg Technol Soc, Cal Tech, Jet Propuls Lab, Thermoelect Team, USN, Off Naval Res, US DOE C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3221-0 PY 1996 BP 209 EP 212 DI 10.1109/ICT.1996.553299 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BG49X UT WOS:A1996BG49X00046 ER PT B AU Ehrlich, AC Gillespie, DJ AF Ehrlich, AC Gillespie, DJ GP IEEE TI Electronic structure of semimetals from transport and fermiology experiments. SO PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS LA English DT Proceedings Paper CT 15th International Conference on Thermoelectrics (ICT 96) CY MAR 26-29, 1996 CL PASADENA, CA SP Int Thermoelect Soc, IEEE, IEEE, Components Packaging & Mfg Technol Soc, Cal Tech, Jet Propuls Lab, Thermoelect Team, USN, Off Naval Res, US DOE C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3221-0 PY 1996 BP 397 EP 401 DI 10.1109/ICT.1996.553513 PG 5 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BG49X UT WOS:A1996BG49X00083 ER PT B AU Demske, D AF Demske, D GP IEEE TI Dense semiconductor-insulator nanocomposites for Navy thermoelectric applications SO PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS LA English DT Proceedings Paper CT 15th International Conference on Thermoelectrics (ICT 96) CY MAR 26-29, 1996 CL PASADENA, CA SP Int Thermoelect Soc, IEEE, IEEE, Components Packaging & Mfg Technol Soc, Cal Tech, Jet Propuls Lab, Thermoelect Team, USN, Off Naval Res, US DOE C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV WHITE OAK,SILVER SPRING,MD 20903. 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 0-7803-3221-0 PY 1996 BP 402 EP 403 DI 10.1109/ICT.1996.553514 PG 2 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BG49X UT WOS:A1996BG49X00084 ER PT B AU Groshens, TJ Gedridge, RW Scheri, R Cole, T AF Groshens, TJ Gedridge, RW Scheri, R Cole, T GP IEEE TI Low temperature MOCVD growth of V/VI materials via a Me(3)SiNMe(2) elimination reaction SO PROCEEDINGS ICT '96 - FIFTEENTH INTERNATIONAL CONFERENCE ON THERMOELECTRICS LA English DT Proceedings Paper CT 15th International Conference on Thermoelectrics (ICT 96) CY MAR 26-29, 1996 CL PASADENA, CA SP Int Thermoelect Soc, IEEE, IEEE, Components Packaging & Mfg Technol Soc, Cal Tech, Jet Propuls Lab, Thermoelect Team, USN, Off Naval Res, US DOE C1 USN,AIR WARFARE CTR,WEAPONS DIV,RES & TECHNOL DIV,CHINA LAKE,CA 93555. NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3221-0 PY 1996 BP 430 EP 434 DI 10.1109/ICT.1996.553521 PG 5 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BG49X UT WOS:A1996BG49X00091 ER PT S AU Williams, EG Houston, BH Herdic, PC AF Williams, EG Houston, BH Herdic, PC BE Chalupnik, JD Marshall, SE Klein, RC TI Reconstruction of the surface velocity and interior acoustic intensity from an aircraft fuselage using nearfield acoustical holography SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Williams, EG (reprint author), USN,RES LAB,CODE 7130,WASHINGTON,DC 20375, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 193 EP 198 PG 6 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00035 ER PT S AU Yankaskas, K AF Yankaskas, K BE Chalupnik, JD Marshall, SE Klein, RC TI Successful airborne noise control: Attention to detail SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Yankaskas, K (reprint author), USN,SEA SYST COMMAND,2531 JEFFERSON DAVIS HIGHWAY,ARLINGTON,VA 22242, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 299 EP 302 PG 4 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00053 ER PT S AU Healey, AJ Marco, DB AF Healey, AJ Marco, DB BE Chalupnik, JD Marshall, SE Klein, RC TI A trilevel control system for coordination of control modes of AUVs SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn AB This paper describes recent work with the NPS PHOENIX vehicle in the further development of intelligent control software structures. A tri-level controller architecture is discussed as part of an ongoing evaluation for coordinating the task based control of vehicle robotic behaviors. The controller allows for mission control as a discrete event system embodied in a rule based AI language. Motion behaviors are coordinated and evaluated though an asynchronous set of software objects modeled after the operation of manned submarines. Motion control for both flight and hover modes is accomplished using robust Sliding Mode methodology. The controller allows for recovery from errors and faults that are both hardware related as well as mission related. Recovery from errors can be accomplished at all levels of control. RP Healey, AJ (reprint author), USN,POSTGRAD SCH,DEPT MECH ENGN,CTR AUTONOMOUS UNDERWATER VEHICLE RES,MONTEREY,CA 93943, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 363 EP 368 PG 6 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00065 ER PT S AU Schwartz, IB Carr, TW AF Schwartz, IB Carr, TW BE Chalupnik, JD Marshall, SE Klein, RC TI Control via symmetry breaking in globally coupled oscillators SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Schwartz, IB (reprint author), USN,RES LAB,DIV PLASMA PHYS,SPECIAL PROJECT NONLINEAR SCI,CODE 67003,WASHINGTON,DC 20375, USA. RI Schwartz, Ira/A-8073-2009 NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 411 EP 416 PG 6 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00074 ER PT S AU Hambric, SA Szwerc, RP AF Hambric, SA Szwerc, RP BE Chalupnik, JD Marshall, SE Klein, RC TI Effects of joint modeling deficiencies on numerical structure-borne power predictions in the round-robin T-shaped beam SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Hambric, SA (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,BETHESDA,MD 20084, USA. 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 0-931784-35-2 J9 NOISE CON P PY 1996 BP 461 EP 466 PG 6 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00082 ER PT S AU Szwerc, RP Hambric, SA AF Szwerc, RP Hambric, SA BE Chalupnik, JD Marshall, SE Klein, RC TI The measurement of intensity of longitudinal and flexural waves in intersecting beams SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Szwerc, RP (reprint author), USN,CTR SURFACE WARFARE,9500 MACARTHUR BLVD,BETHESDA,MD 20084, USA. 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 0-931784-35-2 J9 NOISE CON P PY 1996 BP 473 EP 478 PG 6 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00084 ER PT S AU Szwerc, RP Burroughs, CB McDevitt, TE AF Szwerc, RP Burroughs, CB McDevitt, TE BE Chalupnik, JD Marshall, SE Klein, RC TI A one sided measurement method for the separation of longitudinal and flexural wave intensity SO PROCEEDINGS OF NOISE-CON 96 - THE 1996 NATIONAL CONFERENCE ON NOISE CONTROL ENGINEERING, VOLS 1 AND 2 SE NOISE-CON PROCEEDINGS LA English DT Proceedings Paper CT 14th National Conference on Noise Control Engineering (NOISE-CON 96) - Visions for the Next Twenty-Five Years CY SEP 29-OCT 02, 1996 CL BELLEVUE, WA SP Boeing Commercial Airplane Grp, Inst Noise Control Engn RP Szwerc, RP (reprint author), USN,CTR SURFACE WARFARE,BETHESDA,MD 20084, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU NOISE CONTROL FOUNDATION PI POUGHKEEPSIE PA PO BOX 2469, POUGHKEEPSIE, NY 12603 SN 0736-2935 BN 0-931784-35-2 J9 NOISE CON P PY 1996 BP 479 EP 484 PG 6 WC Acoustics; Engineering, Aerospace; Construction & Building Technology; Transportation SC Acoustics; Engineering; Construction & Building Technology; Transportation GA BH73M UT WOS:A1996BH73M00085 ER PT B AU Tang, CM AF Tang, CM GP IEEE TI Microelectronic applications for RF sources and accelerators SO PROCEEDINGS OF THE 1995 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-5 LA English DT Proceedings Paper CT 16th Biennial Particle Accelerator Conference CY MAY 01-05, 1995 CL DALLAS, TX SP Los Alamos Natl Lab, Stanford Linear Accelerator Ctr, IEEE, Nucl & Plasma Sci Soc, Amer Phys Soc, Div Particles & Beams, Int Union Pure & Appl Phys, USDOE, Natl Sci Fdn, USN, Off Naval Res C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. 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 0-7803-2935-X PY 1996 BP 70 EP 74 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Fluids & Plasmas; Physics, Particles & Fields SC Engineering; Physics GA BF76A UT WOS:A1996BF76A00015 ER PT B AU Uhm, HS AF Uhm, HS GP IEEE TI The resistive-wall klystron as a high-power microwave source SO PROCEEDINGS OF THE 1995 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-5 LA English DT Proceedings Paper CT 16th Biennial Particle Accelerator Conference CY MAY 01-05, 1995 CL DALLAS, TX SP Los Alamos Natl Lab, Stanford Linear Accelerator Ctr, IEEE, Nucl & Plasma Sci Soc, Amer Phys Soc, Div Particles & Beams, Int Union Pure & Appl Phys, USDOE, Natl Sci Fdn, USN, Off Naval Res C1 USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903. 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 0-7803-2935-X PY 1996 BP 1527 EP 1529 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Fluids & Plasmas; Physics, Particles & Fields SC Engineering; Physics GA BF76A UT WOS:A1996BF76A00473 ER PT B AU Uhm, HS AF Uhm, HS GP IEEE TI Operating conditions of high-power relativistic klystron SO PROCEEDINGS OF THE 1995 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-5 LA English DT Proceedings Paper CT 16th Biennial Particle Accelerator Conference CY MAY 01-05, 1995 CL DALLAS, TX SP Los Alamos Natl Lab, Stanford Linear Accelerator Ctr, IEEE, Nucl & Plasma Sci Soc, Amer Phys Soc, Div Particles & Beams, Int Union Pure & Appl Phys, USDOE, Natl Sci Fdn, USN, Off Naval Res C1 USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903. 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 0-7803-2935-X PY 1996 BP 1530 EP 1532 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Fluids & Plasmas; Physics, Particles & Fields SC Engineering; Physics GA BF76A UT WOS:A1996BF76A00474 ER PT B AU Gold, SH Kinkead, AK Fliflet, AW Hafizi, B AF Gold, SH Kinkead, AK Fliflet, AW Hafizi, B GP IEEE TI Initial operation of an X-band magnicon amplifier experiment SO PROCEEDINGS OF THE 1995 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-5 LA English DT Proceedings Paper CT 16th Biennial Particle Accelerator Conference CY MAY 01-05, 1995 CL DALLAS, TX SP Los Alamos Natl Lab, Stanford Linear Accelerator Ctr, IEEE, Nucl & Plasma Sci Soc, Amer Phys Soc, Div Particles & Beams, Int Union Pure & Appl Phys, USDOE, Natl Sci Fdn, USN, Off Naval Res C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. 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 0-7803-2935-X PY 1996 BP 1611 EP 1613 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Fluids & Plasmas; Physics, Particles & Fields SC Engineering; Physics GA BF76A UT WOS:A1996BF76A00502 ER PT B AU Haber, I Callahan, DA Friedman, A Grote, DP Langdon, AB AF Haber, I Callahan, DA Friedman, A Grote, DP Langdon, AB GP IEEE TI Transverse-longitudinal energy equilibration in a long uniform beam SO PROCEEDINGS OF THE 1995 PARTICLE ACCELERATOR CONFERENCE, VOLS 1-5 LA English DT Proceedings Paper CT 16th Biennial Particle Accelerator Conference CY MAY 01-05, 1995 CL DALLAS, TX SP Los Alamos Natl Lab, Stanford Linear Accelerator Ctr, IEEE, Nucl & Plasma Sci Soc, Amer Phys Soc, Div Particles & Beams, Int Union Pure & Appl Phys, USDOE, Natl Sci Fdn, USN, Off Naval Res C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-2935-X PY 1996 BP 3282 EP 3284 PG 3 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Fluids & Plasmas; Physics, Particles & Fields SC Engineering; Physics GA BF76A UT WOS:A1996BF76A01050 ER PT B AU Song, G Longman, RW Mukherjee, R Zhang, J AF Song, G Longman, RW Mukherjee, R Zhang, J GP IEEE TI Integrated sliding-mode adaptive-robust control SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS LA English DT Proceedings Paper CT 1996 IEEE International Conference on Control Applications CY SEP 15-18, 1996 CL DEARBORN, MI SP IEEE, Control Syst Soc C1 USN,POSTGRAD SCH,MECH ENGN DEPT,MONTEREY,CA. NR 0 TC 3 Z9 3 U1 1 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-2975-9 PY 1996 BP 656 EP 661 DI 10.1109/CCA.1996.558942 PG 6 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BG45H UT WOS:A1996BG45H00110 ER PT B AU Cash, PE Emmons, DA Stapor, W AF Cash, PE Emmons, DA Stapor, W GP IEEE TI Low dose proton radiation sensitivity of quartz resonators SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (50TH ANNIVERSARY) LA English DT Proceedings Paper CT 1996 IEEE International Frequency Control Symposium CY JUN 05-07, 1996 CL HONOLULU, HI SP IEEE, Ultrason Ferroelect & Frequency Control Soc RP Cash, PE (reprint author), USN,RES LABS,WASHINGTON,DC 20375, USA. 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 0-7803-3309-8 PY 1996 BP 308 EP 315 DI 10.1109/FREQ.1996.559872 PG 8 WC Engineering, Electrical & Electronic SC Engineering GA BG69B UT WOS:A1996BG69B00046 ER PT B AU Breakiron, LA Koppang, P AF Breakiron, LA Koppang, P GP IEEE TI Frequency steering of hydrogen masers SO PROCEEDINGS OF THE 1996 IEEE INTERNATIONAL FREQUENCY CONTROL SYMPOSIUM (50TH ANNIVERSARY) LA English DT Proceedings Paper CT 1996 IEEE International Frequency Control Symposium CY JUN 05-07, 1996 CL HONOLULU, HI SP IEEE, Ultrason Ferroelect & Frequency Control Soc AB The two Master Clock (MC) systems at USNO are steered in frequency so as to equalize their times with that of a mean timescale produced by an ensemble of hydrogen masers and cesium standards weighted dynamically and revised by post-processing. Occasional steers are also made to keep UTC (USNO) close to TAI. Experiments have been made with different steering algorithms in ct search for an optimal one, i.e. that equalizes the times of an MC and the mean timescale satisfactorily closely and quickly without destablizing the MC's maser to an extent noticeable by our users. Such a choice appears to be one wherein 10 or 90 days of data are averaged to determine the MC's frequency, a damping factor (time constant) of 100 days is employed in the time equalization, and an upper limit of 3.5 parts in 10(15) is set On the maximum daily frequency change. An algorithm utilizing linear quadratic Gaussian control of Kalman-filtered data is being tested on one MC. The absolute frequency stability of UTC (USNO) appears to be comparable to that of TAI. A back-up USNO MC has been established at Falcon AFB, CO. RP Breakiron, LA (reprint author), USN OBSERV,DIRECTORATE TIME,WASHINGTON,DC 20392, USA. 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 0-7803-3309-8 PY 1996 BP 1113 EP 1122 DI 10.1109/FREQ.1996.560302 PG 10 WC Engineering, Electrical & Electronic SC Engineering GA BG69B UT WOS:A1996BG69B00161 ER PT B AU Rao, JBL Hughes, K Trunk, GV Sureau, JC AF Rao, JBL Hughes, K Trunk, GV Sureau, JC GP IEEE TI Affordable phased array for ship self-defense engagement radar SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 USN,RES LAB,DIV RADAR,WASHINGTON,DC 20375. 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 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 32 EP 37 DI 10.1109/NRC.1996.510652 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00006 ER PT B AU Pierce, RD AF Pierce, RD GP IEEE TI RCS characterization using the alpha-stable distribution SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,BETHESDA,MD 20814. NR 0 TC 15 Z9 17 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 154 EP 159 DI 10.1109/NRC.1996.510673 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00027 ER PT B AU Mathew, J Meger, RA Gregor, JA Murphy, DP Pechacek, RE Fernsler, RF Manheimer, WM AF Mathew, J Meger, RA Gregor, JA Murphy, DP Pechacek, RE Fernsler, RF Manheimer, WM GP IEEE TI Electronically steerable plasma mirror for surveillance radar applications SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 196 EP 201 DI 10.1109/NRC.1996.510680 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00034 ER PT B AU Knaell, K AF Knaell, K GP IEEE TI Three-dimensional SAR from curvilinear apertures - IEEE 1996 National Radar Conference SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 NSWC,CARDEROCK DIV,BETHESDA,MD. NR 0 TC 7 Z9 9 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 220 EP 225 DI 10.1109/NRC.1996.510684 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00038 ER PT B AU Cronyn, W Wills, M Holmes, C Birkett, J Holler, E Tate, G Phan, H Lam, A Martin, RA Burky, KD AF Cronyn, W Wills, M Holmes, C Birkett, J Holler, E Tate, G Phan, H Lam, A Martin, RA Burky, KD GP IEEE TI Universal radar moving target transponder SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,DIV RDT&E,SAN DIEGO,CA 92152. 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 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 238 EP 242 DI 10.1109/NRC.1996.510687 PG 5 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00041 ER PT B AU Blair, WD BrandtPearce, M AF Blair, WD BrandtPearce, M GP IEEE TI Signal amplitude conditioned density function for monopulse measurements of fixed-amplitude targets SO PROCEEDINGS OF THE 1996 IEEE NATIONAL RADAR CONFERENCE LA English DT Proceedings Paper CT 1996 IEEE National Radar Conference CY MAY 13-16, 1996 CL UNIV MICHIGAN, ANN ARBOR, MI SP IEEE, SE Michigan Sect, IEEE, Aerosp & Electr Sys Soc HO UNIV MICHIGAN C1 USN,CTR SURFACE WARFARE,DEPT SYST RES & TECHNOL,DAHLGREN,VA 22448. NR 0 TC 0 Z9 2 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3147-8 J9 IEEE IJCNN PY 1996 BP 374 EP 379 DI 10.1109/NRC.1996.510710 PG 6 WC Engineering, Electrical & Electronic; Remote Sensing SC Engineering; Remote Sensing GA BF75S UT WOS:A1996BF75S00064 ER PT B AU Marco, DB Healey, AJ AF Marco, DB Healey, AJ GP IEEE TI Local area navigation using sonar feature extraction and model based predictive control SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,POSTGRAD SCH,DEPT MECH ENGN,AUTONOMOUS UNDERWATER VEHICLES LAB,MONTEREY,CA 93943. 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 0-7803-3186-9 PY 1996 BP 67 EP 77 DI 10.1109/AUV.1996.532402 PG 11 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00010 ER PT B AU Brutzman, D Burns, M Campbell, M Davis, D Healey, T Holden, M Leonhardt, B Marco, D McClarin, D McGhee, B Whalen, R AF Brutzman, D Burns, M Campbell, M Davis, D Healey, T Holden, M Leonhardt, B Marco, D McClarin, D McGhee, B Whalen, R GP IEEE TI NPS Phoenix AUV software integration and in-water testing SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,POSTGRAD SCH,CTR AUTONOMOUS UNDERWATER VEHICLE RES,MONTEREY,CA 93943. NR 0 TC 9 Z9 9 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3186-9 PY 1996 BP 99 EP 108 DI 10.1109/AUV.1996.532405 PG 10 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00013 ER PT B AU Healey, AJ Marco, DB Oliveira, P Pascoal, A Silva, V Silvestre, C AF Healey, AJ Marco, DB Oliveira, P Pascoal, A Silva, V Silvestre, C GP IEEE TI Strategic level mission control - An evaluation of CORAL and PROLOG implementations for mission control specifications SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,POSTGRAD SCH,AUTONOMOUS UNDERWATER VEHICLES LAB,MONTEREY,CA 93943. RI Silvestre, Carlos/F-9189-2010; Silva, Vitor/E-6241-2012; Oliveira, Paulo/F-9196-2010; OI Silvestre, Carlos/0000-0002-5096-5527; Silva, Vitor/0000-0003-4265-6553; Oliveira, Paulo/0000-0002-5799-390X; PASCOAL, ANTONIO /0000-0002-0657-6671 NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3186-9 PY 1996 BP 125 EP 132 DI 10.1109/AUV.1996.532408 PG 8 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00016 ER PT B AU Castelin, SF Manning, RA Robertson, CJ Tubridy, LJ Bernstein, PJ AF Castelin, SF Manning, RA Robertson, CJ Tubridy, LJ Bernstein, PJ GP IEEE TI Exploratory development minehunting sensors for unmanned vehicles SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,COASTAL RES & TECHNOL DEPT,COASTAL SYST STN,PANAMA CITY,FL 32407. 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 0-7803-3186-9 PY 1996 BP 135 EP 140 DI 10.1109/AUV.1996.532409 PG 6 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00017 ER PT B AU Nussbaum, F Stevens, GT Kelly, JG AF Nussbaum, F Stevens, GT Kelly, JG GP IEEE TI Sensors for a forward-looking high resolution AUV sonar SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,CTR UNDERWATER SYST,NEWPORT,RI 02841. NR 0 TC 3 Z9 3 U1 0 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3186-9 PY 1996 BP 141 EP 145 DI 10.1109/AUV.1996.532410 PG 5 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00018 ER PT B AU Medeiros, MR Carpenter, RN AF Medeiros, MR Carpenter, RN GP IEEE TI High resolution array signal processing for AUVs SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,CTR UNDERWATER SYST,NEWPORT,RI 02841. 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 0-7803-3186-9 PY 1996 BP 185 EP 191 DI 10.1109/AUV.1996.532835 PG 7 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00024 ER PT B AU Bachmann, ER McGhee, RB Whalen, RH Steven, R Walker, RG Clynch, JR Healey, AJ Yun, XP AF Bachmann, ER McGhee, RB Whalen, RH Steven, R Walker, RG Clynch, JR Healey, AJ Yun, XP GP IEEE TI Evaluation of an integrated GPS/INS system for shallow-water AUV navigation (SANS) SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,POSTGRAD SCH,MONTEREY,CA 93943. 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 0-7803-3186-9 PY 1996 BP 268 EP 275 DI 10.1109/AUV.1996.532425 PG 8 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00035 ER PT B AU Levine, ER Lueck, RG Donaghay, PL Conners, DN Gagliardi, T Hanson, RC Shell, RR AF Levine, ER Lueck, RG Donaghay, PL Conners, DN Gagliardi, T Hanson, RC Shell, RR GP IEEE TI Turbulence and optics sampling from an autonomous underwater vehicle SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,CTR UNDERWATER SYST,DIV NEWPORT,NEWPORT,RI 02841. NR 0 TC 2 Z9 2 U1 1 U2 1 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3186-9 PY 1996 BP 417 EP 423 DI 10.1109/AUV.1996.532442 PG 7 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00052 ER PT B AU Smith, PH James, SD Keller, PB AF Smith, PH James, SD Keller, PB GP IEEE TI Development efforts in rechargeable batteries for underwater vehicles SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,CTR SURFACE WARFARE,BATTERY RES & DEV GRP,CARDEROCK DIV,SILVER SPRING,MD 20903. 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 0-7803-3186-9 PY 1996 BP 441 EP 447 DI 10.1109/AUV.1996.532445 PG 7 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00055 ER PT B AU Krol, WP Cho, CP AF Krol, WP Cho, CP GP IEEE TI High energy density permanent magnetic motors for underwater systems SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,CTR UNDERSEA WARFARE,NEWPORT,RI 02841. 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 0-7803-3186-9 PY 1996 BP 448 EP 454 DI 10.1109/AUV.1996.532446 PG 7 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00056 ER PT B AU Pitcher, GK AF Pitcher, GK GP IEEE TI Solid lithium hydride as a hydrogen source for fuel cells SO PROCEEDINGS OF THE 1996 SYMPOSIUM ON AUTONOMOUS UNDERWATER VEHICLE TECHNOLOGY LA English DT Proceedings Paper CT 1996 Symposium on Autonomous Underwater Vehicle Technology (AUV 96) CY JUN 02-06, 1996 CL MONTEREY, CA SP IEEE, Ocean Engn Soc C1 USN,UNDERSEA WARFARE CTR,NEWPORT,RI 02841. NR 0 TC 3 Z9 3 U1 1 U2 2 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3186-9 PY 1996 BP 455 EP 460 DI 10.1109/AUV.1996.532447 PG 6 WC Automation & Control Systems; Engineering, Marine; Engineering, Electrical & Electronic SC Automation & Control Systems; Engineering GA BF91Z UT WOS:A1996BF91Z00057 ER PT B AU Pascoal, A Kaminer, I Oliveira, P AF Pascoal, A Kaminer, I Oliveira, P GP IEEE IEEE TI Navigation system design using time-varying complementary filters SO PROCEEDINGS OF THE 1998 IEEE INTERNATIONAL CONFERENCE ON CONTROL APPLICATIONS, VOLS 1 AND 2 LA English DT Proceedings Paper CT IEEE International Conference on Control Applications CY SEP 01-04, 1998 CL TRIESTE, ITALY SP IEEE, CSS, Regione Friuli Venezia Giulia, Univ Trieste, Danieli Automat AB The paper introduces a new methodology for the design of time-varying complementary filters and describes its application to the problem of estimating the position and velocity of autonomous vehicles. C1 USN, Postgrad Sch, Dept Aeronaut & Astronaut, Monterey, CA 93943 USA. RP Pascoal, A (reprint author), USN, Postgrad Sch, Dept Aeronaut & Astronaut, Monterey, CA 93943 USA. RI Oliveira, Paulo/F-9196-2010 OI Oliveira, Paulo/0000-0002-5799-390X 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 0-7803-4104-X PY 1996 BP 1099 EP 1104 PG 4 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic SC Automation & Control Systems; Computer Science; Engineering GA BM14X UT WOS:000077804400218 ER PT S AU Moniz, DL Fortier, PJ AF Moniz, DL Fortier, PJ GP IEEE, COMP SOC TI Simulation analysis of a real-time database buffer manager SO PROCEEDINGS OF THE 29TH ANNUAL SIMULATION SYMPOSIUM SE PROCEEDINGS OF THE ANNUAL SIMULATION SYMPOSIA LA English DT Proceedings Paper CT 29th Annual Simulation Symposium CY APR 08-11, 1996 CL NEW ORLEANS, LA SP Soc Comp Simulat, IEEE, Comp Soc C1 USN,UNDERSEA WARFARE CTR,NEWPORT,RI 02841. NR 0 TC 1 Z9 1 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 SN 0272-4715 BN 0-8186-7432-6 J9 PROC ANNU SIMUL SYMP PY 1996 BP 252 EP 259 DI 10.1109/SIMSYM.1996.492173 PG 8 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BF64R UT WOS:A1996BF64R00027 ER PT S AU Wieselthier, JE Nguyen, GD Barnhart, CM Ephremides, A AF Wieselthier, JE Nguyen, GD Barnhart, CM Ephremides, A GP IEEE TI A problem of constrained optimization for bandwidth allocation in high-speed and wireless communication networks SO PROCEEDINGS OF THE 35TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 SE IEEE CONFERENCE ON DECISION AND CONTROL - PROCEEDINGS LA English DT Proceedings Paper CT 35th IEEE Conference on Decision and Control CY DEC 11-13, 1996 CL KOBE, JAPAN SP IEEE Control Syst Soc, Soc Instrument & Control Engineers, Inst Syst Control & Informat Engineers, Soc Ind & Appl Math, Operat Res Soc Amer AB We consider the problem of throughput maximization in circuit-switched networks, subject to Quality of Service (QoS) constraints on circuit blocking probability. We formulate an associated nonlinear optimization problem,. which incorporates nonlinear inequality constraints, and develop a technique for guiding the search more directly toward the optimal solution. The resulting algorithm leads to faster and more-reliable convergence over a variety of network instances. RP Wieselthier, JE (reprint author), USN,RES LAB,DIV INFORMAT TECHNOL,WASHINGTON,DC 20375, USA. 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 0191-2216 BN 0-7803-3591-0 J9 IEEE DECIS CONTR P PY 1996 BP 1347 EP 1348 PG 2 WC Automation & Control Systems; Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation SC Automation & Control Systems; Engineering; Instruments & Instrumentation GA BH27F UT WOS:A1996BH27F00292 ER PT S AU Kang, W AF Kang, W GP IEEE TI Bifurcation and topology of equilibrium sets SO PROCEEDINGS OF THE 35TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 SE IEEE CONFERENCE ON DECISION AND CONTROL - PROCEEDINGS LA English DT Proceedings Paper CT 35th IEEE Conference on Decision and Control CY DEC 11-13, 1996 CL KOBE, JAPAN SP IEEE Control Syst Soc, Soc Instrument & Control Engineers, Inst Syst Control & Informat Engineers, Soc Ind & Appl Math, Operat Res Soc Amer AB The normal forms and invariants of control systems with a single parameter are found. Then, bifurcations of equilibrium sets are classified. RP Kang, W (reprint author), USN,POSTGRAD SCH,DEPT MATH,MONTEREY,CA 93943, USA. NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0191-2216 BN 0-7803-3591-0 J9 IEEE DECIS CONTR P PY 1996 BP 2151 EP 2156 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation SC Automation & Control Systems; Engineering; Instruments & Instrumentation GA BH27F UT WOS:A1996BH27F00467 ER PT S AU Kang, W Huang, J AF Kang, W Huang, J GP IEEE TI Calculation of the minimal dimension k(th)-order robust servo-regulator SO PROCEEDINGS OF THE 35TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 SE IEEE CONFERENCE ON DECISION AND CONTROL - PROCEEDINGS LA English DT Proceedings Paper CT 35th IEEE Conference on Decision and Control CY DEC 11-13, 1996 CL KOBE, JAPAN SP IEEE Control Syst Soc, Soc Instrument & Control Engineers, Inst Syst Control & Informat Engineers, Soc Ind & Appl Math, Operat Res Soc Amer AB Design of a minimal dimension k(th)-order robust servoregulator requires calculation of the minimal polynomial of a class of matrices defined by the given exosystem. A characterization of the minimal polynomial of this class of matrices was given recently in [3] when the exosystem is semisimple. This paper will further give the minimal polynomials of this class of matrices for the general case. RP Kang, W (reprint author), USN,POSTGRAD SCH,DEPT MATH,MONTEREY,CA 93943, USA. RI Huang, Jie/A-2790-2011 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 0191-2216 BN 0-7803-3591-0 J9 IEEE DECIS CONTR P PY 1996 BP 3198 EP 3199 PG 2 WC Automation & Control Systems; Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation SC Automation & Control Systems; Engineering; Instruments & Instrumentation GA BH27F UT WOS:A1996BH27F00692 ER PT S AU Razavian, A AF Razavian, A GP IEEE TI Numerical object rings path planning algorithm SO PROCEEDINGS OF THE 35TH IEEE CONFERENCE ON DECISION AND CONTROL, VOLS 1-4 SE IEEE CONFERENCE ON DECISION AND CONTROL - PROCEEDINGS LA English DT Proceedings Paper CT 35th IEEE Conference on Decision and Control CY DEC 11-13, 1996 CL KOBE, JAPAN SP IEEE Control Syst Soc, Soc Instrument & Control Engineers, Inst Syst Control & Informat Engineers, Soc Ind & Appl Math, Operat Res Soc Amer AB A Numerical Object Rings Path Planning Algorithm (NORPPA) is a heuristic search approach to path finding for Autonomous Robotic Systems. Most traditional methods of this type of path finding are analytical approaches such as the Potential Field, Free Space Configuration, and Vertex Graphs. Analytical techniques use repetitive mathematical calculations with few or no heuristic search techniques [2]. The mathematical routines are applied repetitively until the final goal is accomplished The advantage of these techniques is that the result is usually unique. The disadvantage of this technique is that the procedure is case-independent. The Heuristic Search technique is used for the development of the NORPPA. This technique employs the rule-of-thumb strategies to help solve problems [1]. The NORPPA uses intelligent schemes to reduce the search space, that is, to prune the logic tree [3,4]. There is no guarantee that a unique solution for a given problem will be reached, only that a correct solution will be found and identified with an execution time that does not exponentially increase with the complexity of the path. The NORRPA includes Means-End-Analysis and Hill Climbing techniques [5,6]. The NORPPA consists of a number of specific task oriented algorithms, which are coordinated by a central program called the Execution Sequencer (ES). The ES interfaces with other functions of the robotic system such as the perception system and drive mechanism. Functionally, the path finding procedure of the NORPPA goes through three stages: (1) the primary path, (2) the refined path, and (3) the travelable path procedures. The primary path procedure is the first draft of the path between the current position and ending, or goal, position. The second stage of the path finding procedure develops a refined path. This path accounts for the starting position, all obstacles encountered, and the ending position. The result is a smooth path that connects the starting and ending positions. The final stage of the procedure is to determine the actual path, called the travelable path. The travelable path procedure selects a portion of the refined path that falls into the local sensing region of the robot The average path finding execution time of the Primary Path routine simulations for paths ranging from simple ( a few bends) to complex paths (larger than ten bends) is about 11.5 seconds using a 486 personal computer at 33 MHZ clock speed. In a comparison to the heuristic approach, the analytical algorithm is dominated by the factor n(n), where n is the number of bends in the path, the analytical algorithm proved to be fast for paths with a small number of bends (small n) and impractically slow for a large number of bends. RP Razavian, A (reprint author), USN,CTR SURFACE WARFARE,CRANE,IN 47522, USA. 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 SN 0191-2216 BN 0-7803-3591-0 J9 IEEE DECIS CONTR P PY 1996 BP 4406 EP 4411 PG 6 WC Automation & Control Systems; Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation SC Automation & Control Systems; Engineering; Instruments & Instrumentation GA BH27F UT WOS:A1996BH27F00933 ER PT B AU Davis, AJ Fischer, G AF Davis, AJ Fischer, G BE Cameron, G Hassoun, M Jerdee, A Melvin, C TI A two-stage sixth-order sigma-delta ADC with 16-bit resolution designed for an oversampling ratio of 16 SO PROCEEDINGS OF THE 39TH MIDWEST SYMPOSIUM ON CIRCUITS AND SYSTEMS, VOLS I-III LA English DT Proceedings Paper CT 39th Midwest Symposium on Circuits and Systems CY AUG 18-21, 1996 CL IOWA STATE UNIV, SCHERMAN CONTINUING EDUC BLDG, AMES, IA SP Iowa State Univ, Dept Elect & Comp Engn, IEEE Circuits & Syst Soc HO IOWA STATE UNIV, SCHERMAN CONTINUING EDUC BLDG AB This paper presents a sixth-order sigma-delta modulator capable of 16 bit resolution with an oversampling ratio (OSR) of only 16. The circuit's sensitivity to non-idealities such as amplifier finite open-loop gain, bandwidth, slew rate and capacitor mismatches is minimized through the use of a novel topology. Efficient noise shaping is realized by cascading two nearly identical third-order modulators. The dynamic range is maximized by placing a finite zero in the noise shaping function of each modulator loop. The resolution is further enhanced through the use of ternary quantizers which halve the quantization noise while avoiding the linearity problems associated with higher resolution DACs required in the modulator feedback paths. The presented modulator has been fabricated as a fully-differential switched-capacitor circuit by a 1.2 mu m double-poly CMOS process and operates from a +/-2.5 volt power supply. RP Davis, AJ (reprint author), USN,UNDERSEA WARFARE CTR,WEAPON SYST DEPT,NEWPORT,RI 02841, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3637-2 PY 1996 BP 230 EP 233 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BH59C UT WOS:A1996BH59C00051 ER PT B AU Schneidewind, NF AF Schneidewind, NF GP IEEE COMP SOC TI Reliability and risk analysis for software that must be safe SO PROCEEDINGS OF THE 3RD INTERNATIONAL SOFTWARE METRICS SYMPOSIUM LA English DT Proceedings Paper CT 3rd International Software Metrics Symposium CY MAR 25-26, 1996 CL BERLIN, GERMANY SP IEEE Comp Soc Tech Council Software Engn C1 USN,POSTGRAD SCH,MONTEREY,CA 93943. NR 0 TC 0 Z9 2 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 0-8186-7364-8 PY 1996 BP 142 EP 153 DI 10.1109/METRIC.1996.492451 PG 12 WC Computer Science, Software Engineering; Computer Science, Theory & Methods SC Computer Science GA BF41X UT WOS:A1996BF41X00014 ER PT B AU Evans, AG Hermann, BR Remondi, BW Simpson, PB Feist, JL Wiles, GC AF Evans, AG Hermann, BR Remondi, BW Simpson, PB Feist, JL Wiles, GC GP INST NAVIGAT TI An evaluation of precise kinematic on-the-fly relative GPS positioning for a rocket sled test SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB This paper evaluates the use of the Global Positioning System (GPS) to perform kinematic relative positioning for a rocket sled moving at a maximum speed of 525 ft/s. The test demonstrates precise positioning accuracy in the well-controlled environment of the High-Speed Test Track at Holloman AFB, New Mexico. Application of this procedure determines the miss distance vector between a target and interceptor missile at or near the moment of intercept, where both missiles are far from a land reference site. Other potential applications include the autonomously controlled docking of space vehicles and high-speed aircraft landing on aircraft carriers. Results are presented that use the Remondi Kinematic On-The-Fly (OTF) relative positioning procedure. The procedure uses L-1 and L-2 frequency pseudorange and phase measurements of GPS to precisely determine dynamic relative position. This particular algorithm is capable of subdecimeter positioning accuracy with respect to a moving platform. The position of the sled antenna is determined with respect to a fixed antenna located about 6 m away from the test track. A truth miss distance comparison is made at the point of closest approach. Centimeter level agreement is obtained. In addition, positioning of the fixed antenna with respect to the moving sled antenna is obtained to demonstrate the capability to use a moving platform as a reference. Sled test trajectories are presented and evaluated. RP Evans, AG (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,GLOBAL POSITIONING SYST,DAHLGREN,VA 22448, USA. NR 0 TC 1 Z9 1 U1 1 U2 2 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 71 EP 80 PG 10 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00010 ER PT J AU Maraffio, KC AF Maraffio, KC GP INST NAVIGAT TI GPS receiver testing issues and techniques SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB Characterization and system integration of GPS receivers requires the use of complex hardware-in-the-loop test environments running satellite signal simulators and other dynamic simulations. These test environments are expensive to purchase and maintain. NAWCWPNS has developed a distributed processing methodology using computer networking to reduce the expense of GPS receiver characterization and integration. NAWCWPNS customers now have the option of performing tests on-site or at a local site separate from the Navigation Laboratory. This paper begins with an overview of the types of GPS receiver tests and the issues associated with those tests. Then, descriptions of the Navigation Laboratory and the techniques it incorporates to resolve these issues are given as a case study of the distributive processing test environment. Laboratory enhancements being developed in response to broadening customer needs are also presented. The paper concludes with a summary of GPS satellite simulator lessons learned. RP Maraffio, KC (reprint author), USN,CTR WEAP,WEAPONS DIV,CHINA LAKE,CA 93555, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 83 EP 92 PG 10 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00011 ER PT J AU Scott, BD AF Scott, BD GP INST NAVIGAT TI Development of a low-cost GPS-based time-space-positioning information (TSPI) system SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB The Navigation and Data Link Section of NAWCWPNS China Lake was tasked to develop a low cost Time-Space-Position-Information (TSPI) system for airborne vehicles based on GPS technology. The portable system developed provides vehicle positioning information in geographic areas not supported by instrumented ranges while maintaining compatibility with existing telemetry range assets. The system reports TSPI data via an RF down link in a standard PCM telemetry frame format. An onboard data logger is provided for telemetry backup while an interface for sampling analog input signals and incorporating the data into the telemetered data is also provided. Development cost was minimized by utilizing off-the-shelf industrial components modified slightly to tolerate the environmental conditions. This system provides the Navy with an inexpensive but highly adaptable and capable TSPI system. RP Scott, BD (reprint author), USN,WARFARE CTR,WEAPONS DIV,GPS SYST,NAVIGAT & DATA LINKS SECT,CHINA LAKE,CA 93555, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 195 EP 199 PG 5 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00023 ER PT B AU Evans, AG Hermann, BR Jeroski, JF AF Evans, AG Hermann, BR Jeroski, JF GP INST NAVIGAT TI GPS-aided lane marking and reporting for shallow water mine neutralization SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB This paper investigates the use of the Global Positioning System (GPS) to assist with the marking and reporting of lanes cleared of mines in preparation for a military amphibious assault. The feasibility of using GPS, inertial navigation systems (INS), GPS/INS, GPS translators, radar, laser and videometric technologies are included in the concept study. Sensor data from the mentioned devices have potential for enhancing overall system performance and/or mission success during shallow water mine countermeasure operations. The main objective of the study is to assess the advantages and disadvantages of the various sensor technologies in regards to cost, accuracy, ruggedness,size, weight, power; and other considerations. In regard to GPS, dynamic robustness and vulnerability aspects are reviewed. Both differential and absolute GPS positioning accuracy are discussed for present and future systems within the constraints of the amphibious application. A discussion of the background for the study and the assumed scenario and environment for the operation are presented. Recommendations and conclusions are given. RP Evans, AG (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,DAHLGREN,VA 22448, USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 497 EP 507 PG 11 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00055 ER PT J AU Matsakis, DN Archinal, BA AF Matsakis, DN Archinal, BA GP INST NAVIGAT TI Modern frequency standards and time comparisons SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB The accuracy of International Atomic Time (TAI) has improved dramatically in the past few years. This is due to an increase in the number and quality of contributing frequency standards. In this paper we describe these standards, discuss how time scales are formulated, and present very preliminary results from one (mercury trapped ion) of three new kinds of standards which an likely to contribute to TAI in the near future. RP Matsakis, DN (reprint author), USN OBSERV,WASHINGTON,DC 20392, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 741 EP 748 PG 8 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00084 ER PT J AU McCarthy, DD Archinal, BA AF McCarthy, DD Archinal, BA GP INST NAVIGAT TI Improved models for earth orientation determination SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB The accuracy with which reference systems and Earth orientation data can be defined is limited by the systematic errors which arise in the treatment of astronomical and geodetic observations. Constants and models must be reevaluated and improved, if possible, as measurement precision improves. Both the astronomical and geodetic communities maintain sets of conventional standards which change slowly with time, as well as ''current best estimates'' for high-precision users of reference systems. The International Earth Rotation Service (IERS) Conventions are discussed from the theoretical and applied points of view. Specific constants and models are described. RP McCarthy, DD (reprint author), USN OBSERV,WASHINGTON,DC 20392, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 759 EP 764 PG 6 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00087 ER PT B AU Binning, PW AF Binning, PW GP INST NAVIGAT TI GPS, dual frequency, SA free satellite navigation SO PROCEEDINGS OF THE 52ND ANNUAL MEETING - THE INSTITUTE OF NAVIGATION: NAVIGATIONAL TECHNOLOGY FOR THE 3RD MILLENNIUM LA English DT Proceedings Paper CT 52nd Annual Meeting of the Institute-of-Navigation on Navigational Technology for the 3rd Millenium CY JUN 19-21, 1996 CL CAMBRIDGE, MA SP Inst Navigat AB A software utility is under development that will estimate a spacecraft state using GPS pseudorange and carrier phase measurements. This tool implements a Kalman filter along with a smoothing algorithm. In addition, a measurement simulator is being developed to test the algorithms and methods designed for the filter. However, simulated measurements can give misleading results and it is desirable to process real measurements from a real satellite. It is of interest to determine the maximum accuracy with which one can estimate a spacecraft state by only using measurements taken at the user vehicle. For this reason dual frequency data that is not SA corrupted is desirable. A specific TOPEX/Poseidon GPS data set is used as the basis for this study because it fits the two above stated requirements. In 1993 the GPS constellation was not yet considered fully operational and therefore Anti-Spoofing was not on. This allowed all users to receive both the L1 and L2 frequencies. In addition, over the period spanning November 17.5 - 19 of that year, Selective Availability (SA) was also off on a limited number of GPS satellites. This allowed civilian users;access to the most precise GPS measurements. The estimation of TOPEX's state is done using both the GPS broadcast navigation information as well as post processed GPS states that are available from the Jet Propulsion Laboratory and the Defense Mapping Agency. Accuracy of the estimated TOPEX orbit is found by comparing the filter's estimate to that found by JPL. The Precision Orbit Ephemeris (POE) computed at JPL is stated to have a 3-D RMS error below 15 cm. This gives an excellent tool for determining the accuracy of our estimates. It will be shown that navigation in real time can be achieved to better than 7 meters, 3-D, RMS over one day. Use of post processed GPS orbits has shown that estimates of a user orbit can be generated that are accurate to less than 50 cm RMS without the use of carrier phase measurements nor direct ground station data. RP Binning, PW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU INST NAVIGATION PI WASHINGTON PA 815 15TH ST NW, STE 832, WASHINGTON, DC 20005 PY 1996 BP 803 EP 812 PG 10 WC Engineering, Marine SC Engineering GA BJ47X UT WOS:A1996BJ47X00093 ER PT B AU Gordon, DF Subramanian, D AF Gordon, DF Subramanian, D BE Cottrell, GW TI Cognitive modeling of action selection learning SO PROCEEDINGS OF THE EIGHTEENTH ANNUAL CONFERENCE OF THE COGNITIVE SCIENCE SOCIETY LA English DT Proceedings Paper CT 18th Annual Conference of the Cognitive-Science-Society CY JUL 12-15, 1996 CL UNIV CALIF SAN DIEGO, LA JOLLA, CA SP Cognit Sci Soc HO UNIV CALIF SAN DIEGO C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU LAWRENCE ERLBAUM ASSOC PUBL PI MAHWAH PA 10 INDUSTRIAL AVE, MAHWAH, NJ 07430 BN 0-8058-2541-X PY 1996 BP 546 EP 551 PG 6 WC Psychology, Biological; Psychology SC Psychology GA BG10A UT WOS:A1996BG10A00121 ER PT B AU Mahan, RP Kirschenbaum, SS Jilig, JM Marino, CJ AF Mahan, RP Kirschenbaum, SS Jilig, JM Marino, CJ GP HUMAN FACTORS & ERGON SOC TI Using reliability information in dynamic decision support: A cognitive engineering approach SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 USN,CTR UNDERWATER SYST,NEWPORT,RI. NR 0 TC 0 Z9 0 U1 0 U2 1 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 214 EP 217 PG 4 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00041 ER PT B AU Bost, JR Malone, TB Baker, CC Williams, CD AF Bost, JR Malone, TB Baker, CC Williams, CD GP HUMAN FACTORS & ERGON SOC TI Human Systems Integration (HSI) in navy ship manpower reduction SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 USN,SEA SYST COMMAND,BETHESDA,MD. NR 0 TC 0 Z9 0 U1 1 U2 1 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 977 EP 981 PG 5 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00186 ER PT B AU Nugent, WA AF Nugent, WA GP HUMAN FACTORS & ERGON SOC TI Comparison of variable coded symbology to a conventional tactical situation display method SO PROCEEDINGS OF THE HUMAN FACTORS AND ERGONOMICS SOCIETY - 40TH ANNUAL MEETING, VOLS 1 AND 2: HUMAN CENTERED TECHNOLOGY - KEY TO THE FUTURE LA English DT Proceedings Paper CT Human-Factors-and-Ergonomics-Society 40th Annual Meeting on Human Centered Technology - Key to the Future CY 1996 CL PHILADELPHIA, PA SP Human Factors & Ergon Soc C1 USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,RDTE DIV,SAN DIEGO,CA 92152. NR 0 TC 2 Z9 2 U1 0 U2 0 PU HUMAN FACTORS AND ERGONOMICS SOC PI SANTA MONICA PA PO BOX 1369, SANTA MONICA, CA 90406-1369 BN 0-945289-06-5 PY 1996 BP 1174 EP 1178 PG 5 WC Ergonomics SC Engineering GA BG25A UT WOS:A1996BG25A00226 ER PT J AU Kersey, AD AF Kersey, AD TI Prolog to the special section on smart structures SO PROCEEDINGS OF THE IEEE LA English DT Editorial Material RP Kersey, AD (reprint author), USN,RES LAB,DIV OPT SCI,WASHINGTON,DC 20375, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9219 J9 P IEEE JI Proc. IEEE PD JAN PY 1996 VL 84 IS 1 BP 57 EP 59 DI 10.1109/JPROC.1996.476026 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA TN921 UT WOS:A1996TN92100008 ER PT B AU Lee, N Huynh, Q Schwartz, S AF Lee, N Huynh, Q Schwartz, S GP IEEE TI New methods of linear time-frequency analysis for signal detection SO PROCEEDINGS OF THE IEEE-SP INTERNATIONAL SYMPOSIUM ON TIME-FREQUENCY AND TIME-SCALE ANALYSIS LA English DT Proceedings Paper CT IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis CY JUN 18-21, 1996 CL PARIS, FRANCE SP IEEE, Gisnal Proc Soc, CNRS C1 USN,UNDERSEA WARFARE CTR,NEWPORT,RI. NR 0 TC 3 Z9 3 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3512-0 PY 1996 BP 13 EP 16 DI 10.1109/TFSA.1996.546674 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23N UT WOS:A1996BG23N00004 ER PT B AU Huynh, QQ Cooper, LN Intrator, N Shouval, H AF Huynh, QQ Cooper, LN Intrator, N Shouval, H GP IEEE TI Classification using feature extraction based on time-frequency analysis and BCM theory SO PROCEEDINGS OF THE IEEE-SP INTERNATIONAL SYMPOSIUM ON TIME-FREQUENCY AND TIME-SCALE ANALYSIS LA English DT Proceedings Paper CT IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis CY JUN 18-21, 1996 CL PARIS, FRANCE SP IEEE, Gisnal Proc Soc, CNRS C1 USN,CTR UNDERWATER SYST,NEWPORT,RI 02841. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3512-0 PY 1996 BP 233 EP 236 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23N UT WOS:A1996BG23N00059 ER PT B AU Barrows, GL Sciortino, JC AF Barrows, GL Sciortino, JC GP IEEE TI Mutual information measure for feature selection with application to pulse classification SO PROCEEDINGS OF THE IEEE-SP INTERNATIONAL SYMPOSIUM ON TIME-FREQUENCY AND TIME-SCALE ANALYSIS LA English DT Proceedings Paper CT IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis CY JUN 18-21, 1996 CL PARIS, FRANCE SP IEEE, Gisnal Proc Soc, CNRS C1 USN,TACT ELECT WARFARE DIV,RES LAB,WASHINGTON,DC. NR 0 TC 0 Z9 0 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3512-0 PY 1996 BP 249 EP 252 DI 10.1109/TFSA.1996.547460 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23N UT WOS:A1996BG23N00063 ER PT B AU Chen, VC Qian, S AF Chen, VC Qian, S GP IEEE TI Time-frequency transform vs Fourier transform for radar imaging SO PROCEEDINGS OF THE IEEE-SP INTERNATIONAL SYMPOSIUM ON TIME-FREQUENCY AND TIME-SCALE ANALYSIS LA English DT Proceedings Paper CT IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis CY JUN 18-21, 1996 CL PARIS, FRANCE SP IEEE, Gisnal Proc Soc, CNRS C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 8 Z9 8 U1 0 U2 0 PU I E E E PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 BN 0-7803-3512-0 PY 1996 BP 389 EP 392 DI 10.1109/TFSA.1996.550074 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BG23N UT WOS:A1996BG23N00098 ER PT J AU Li, CJ Ma, J Hwang, B AF Li, CJ Ma, J Hwang, B TI Bearing condition monitoring by pattern recognition based on bicoherence analysis of vibrations SO PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART C-JOURNAL OF MECHANICAL ENGINEERING SCIENCE LA English DT Article DE bearing; bicoherence analysis; condition monitoring; diagnosis; pattern recognition; vibration analysis AB For automatic detection and diagnosis of localized defects in rolling element bearings, bicoherence spectra are used to derive features that signify the condition of a bearing. These features quantitatively describe the degree of phase correlation among any three harmonics of bearing characteristic defect frequencies. Employing these features, a linear discriminant classifier is implemented to detect localized defects on a roller and the outer race of a bearing. Experimental results show that the proposed scheme is effective in bearing defect detection and sensitive to incipient defects. C1 NEW YORK INST TECHNOL,DEPT ENGN MECH,OLD WESTBURY,NY 11568. USN,CTR SURFACE WARFARE,INFORMAT TECHNOL OFF,BETHESDA,MD. RP Li, CJ (reprint author), RENSSELAER POLYTECH INST,DEPT ENGN MECH,TROY,NY 12181, USA. NR 19 TC 11 Z9 11 U1 1 U2 1 PU MECHANICAL ENG PUBL LTD PI EDMUNDS PA PO BOX 24, NORTHGATE AVE, BURY ST, EDMUNDS, SUFFOLK, ENGLAND IP32 6BW SN 0954-4062 J9 P I MECH ENG C-J MEC JI Proc. Inst. Mech. Eng. Part C-J. Eng. Mech. Eng. Sci. PY 1996 VL 210 IS 3 BP 277 EP 285 PG 9 WC Engineering, Mechanical SC Engineering GA UW138 UT WOS:A1996UW13800008 ER PT B AU Dubbelday, WB Ott, J Lagnado, I Kavanagh, K Walker, H Chu, J Meyerson, B AF Dubbelday, WB Ott, J Lagnado, I Kavanagh, K Walker, H Chu, J Meyerson, B BE Hemment, PLF Cristoloveanu, S Izumi, K Houston, T Wilson, S TI Critical issues in SiGe on thin film silicon on sapphire for high performance room temperature CMOS technology SO PROCEEDINGS OF THE SEVENTH INTERNATIONAL SYMPOSIUM ON SILICON-ON-INSULATOR TECHNOLOGY AND DEVICES SE ELECTROCHEMICAL SOCIETY SERIES LA English DT Proceedings Paper CT 7th International Symposium on Silicon on Insulator Technology and Devices, at the 187th Electrochemical-Society Meeting CY MAY 05-10, 1996 CL LOS ANGELES, CA SP Electrochem Soc, Electr Div AB Silicon CMOSFET technology, the primary technology for integrated circuits, has the drawback of hole mobility 2-3 times less than the electron mobility and is generally fabricated on a semiconducting rather than semi-insulating or insulating substrate. SiGe heterostructure MODFETs have been shown to enhance p-channel mobility. Similarly, silicon on sapphire (SOS) PFETs show enhanced performance due to compressive strain for the substrate. Sapphire also makes a fine insulating substrate for high frequency applications. This work covers the first effort to combine both technologies to enhanced device performance and discusses some of the critical issues for microwave and analog/digital application. RP Dubbelday, WB (reprint author), USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,RDT & E DIV,CODE 553,SAN DIEGO,CA 92152, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELECTROCHEMICAL SOCIETY INC PI PENNINGTON PA 10 S MAIN ST, PENNINGTON, NJ 08534-2896 BN 1-56677-153-6 J9 ELEC SOC S PY 1996 VL 96 IS 3 BP 237 EP 247 PG 11 WC Electrochemistry SC Electrochemistry GA BJ91P UT WOS:A1996BJ91P00025 ER PT B AU Kozo, TL Thompson, WT Lowe, SJ Shelton, JM Kienitz, TJ Fett, RW Pham, TC AF Kozo, TL Thompson, WT Lowe, SJ Shelton, JM Kienitz, TJ Fett, RW Pham, TC BE Chung, JS Sayed, M Hobbs, RE Yoerger, DR TI Evidence for autumn sea ice transport through the Vil'kitskogo strait at the eastern exit of the Kara sea SO PROCEEDINGS OF THE SIXTH (1996) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL II, 1996 LA English DT Proceedings Paper CT 6th International Offshore and Polar Engineering Conference CY MAY 26-31, 1996 CL LOS ANGELES, CA SP Int Soc Offshore & Polar Engineers, Canadian Assoc Petr Producers, Amer Soc Civil Engineers, Engn Mech Div, Korea Comm Ocean Resources & Engn, Canadian Soc Civil Engineers, Engn Mech Div, Chinese Soc Ocean Engineers, Chinese Soc Naval Architects & Marine Engineers, Chinese Soc Theoret & Appl Mech, Russian Acad Sci, Singapore Struct Steel Soc, Norwegian Petr Soc, Inst Engineers Austr, Kansai Soc Naval Architects, Japan, IRO, Netherlands, Tech Res Ctr Finland, Soc Mat Sci, Japan, Offshore Engn Soc, UK, Ukraine Soc Mech Engineers, IFREMER, France, Scott Polat Res Inst DE Arctic; Kara Sea; sea ice; numerical models; pollutant transport; remote sensing C1 USN,RES LAB,MONTEREY,CA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS PI GOLDEN PA PO BOX 1107, GOLDEN, CO 80402-1107 BN 1-880653-24-9 PY 1996 BP 411 EP 416 PG 6 WC Engineering, Marine SC Engineering GA BF95F UT WOS:A1996BF95F00062 ER PT B AU Barthelemy, JL AF Barthelemy, JL BE Chung, JS Sayed, M Hobbs, RE Yoerger, DR TI The sea-ice runway near McMurdo Station, Antarctica: A problem of logistics SO PROCEEDINGS OF THE SIXTH (1996) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL II, 1996 LA English DT Proceedings Paper CT 6th International Offshore and Polar Engineering Conference CY MAY 26-31, 1996 CL LOS ANGELES, CA SP Int Soc Offshore & Polar Engineers, Canadian Assoc Petr Producers, Amer Soc Civil Engineers, Engn Mech Div, Korea Comm Ocean Resources & Engn, Canadian Soc Civil Engineers, Engn Mech Div, Chinese Soc Ocean Engineers, Chinese Soc Naval Architects & Marine Engineers, Chinese Soc Theoret & Appl Mech, Russian Acad Sci, Singapore Struct Steel Soc, Norwegian Petr Soc, Inst Engineers Austr, Kansai Soc Naval Architects, Japan, IRO, Netherlands, Tech Res Ctr Finland, Soc Mat Sci, Japan, Offshore Engn Soc, UK, Ukraine Soc Mech Engineers, IFREMER, France, Scott Polat Res Inst C1 USN,FACIL ENGN SERV CTR,PORT HUENEME,CA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS PI GOLDEN PA PO BOX 1107, GOLDEN, CO 80402-1107 BN 1-880653-24-9 PY 1996 BP 427 EP 432 PG 6 WC Engineering, Marine SC Engineering GA BF95F UT WOS:A1996BF95F00065 ER PT S AU Su, MY AF Su, MY BE Chung, JS Olagnon, M Kim, CH TI Nonlinear wave groups SO PROCEEDINGS OF THE SIXTH (1996) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL III, 1996 SE International Offshore and Polar Engineering Conference Proceedings LA English DT Proceedings Paper CT 6th International Offshore and Polar Engineering Conference CY MAY 26-31, 1996 CL LOS ANGELES, CA SP Int Soc Offshore & Polar Engineers, Canadian Assoc Petr Producers, Amer Soc Civil Engineers, Engn Mech Div, Korea Comm Ocean Resources & Engn, Canadian Soc Civil Engineers, Engn Mech Div, Chinese Soc Ocean Engineers, Chinese Soc Naval Architects & Marine Engineers, Chinese Soc Theoret & Appl Mech, Russian Acad Sci, Singapore Struct Steel Soc, Norwegian Petr Soc, Inst Engineers Austr, Kansai Soc Naval Architects, Japan, IRO, Netherlands, Tech Res Ctr Finland, Soc Mat Sci, Japan, Offshore Engn Soc, UK, Ukraine Soc Mech Engineers, IFREMER, France, Scott Polat Res Inst C1 USN, RES LAB, BAY ST LOUIS, MS USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS PI CUPERTINO PA PO BOX 189, CUPERTINO, CA 95015-0189 USA SN 1098-6189 BN 1-880653-25-7 J9 INT OFFSHORE POLAR E PY 1996 BP 158 EP 167 PG 10 WC Engineering, Marine SC Engineering GA BF95G UT WOS:A1996BF95G00023 ER PT S AU Rodd, JL AF Rodd, JL BE Santos, JFD Langen, I Ueda, Y Puthli, RS TI Large scale tanker grounding experiments SO PROCEEDINGS OF THE SIXTH (1996) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL IV, 1996 SE International Offshore and Polar Engineering Conference Proceedings LA English DT Proceedings Paper CT 6th International Offshore and Polar Engineering Conference CY MAY 26-31, 1996 CL LOS ANGELES, CA SP Int Soc Offshore & Polar Engineers, Canadian Assoc Petr Producers, Amer Soc Civil Engineers, Engn Mech Div, Korea Comm Ocean Resources & Engn, Canadian Soc Civil Engineers, Engn Mech Div, Chinese Soc Ocean Engineers, Chinese Soc Naval Architects & Marine Engineers, Chinese Soc Theoret & Appl Mech, Russian Acad Sci, Singapore Struct Steel Soc, Norwegian Petr Soc, Inst Engineers Austr, Kansai Soc Naval Architects, Japan, IRO, Netherlands, Tech Res Ctr Finland, Soc Mat Sci, Japan, Offshore Engn Soc, UK, Ukraine Soc Mech Engineers, IFREMER, France, Scott Polat Res Inst DE tanker; oil spill; grounding; double hull; advanced double hull; unidirectional C1 USN, CTR SURFACE WARFARE, CARDEROCK DIV, BETHESDA, MD USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS PI CUPERTINO PA PO BOX 189, CUPERTINO, CA 95015-0189 USA SN 1098-6189 BN 1-880653-26-5 J9 INT OFFSHORE POLAR E PY 1996 BP 483 EP 494 PG 12 WC Engineering, Marine SC Engineering GA BF95H UT WOS:A1996BF95H00076 ER PT S AU Murdoch, M Bretz, G AF Murdoch, M Bretz, G BE Santos, JFD Langen, I Ueda, Y Puthli, RS TI Development of a rapidly deployed pier (RDP) SO PROCEEDINGS OF THE SIXTH (1996) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL IV, 1996 SE International Offshore and Polar Engineering Conference Proceedings LA English DT Proceedings Paper CT 6th International Offshore and Polar Engineering Conference CY MAY 26-31, 1996 CL LOS ANGELES, CA SP Int Soc Offshore & Polar Engineers, Canadian Assoc Petr Producers, Amer Soc Civil Engineers, Engn Mech Div, Korea Comm Ocean Resources & Engn, Canadian Soc Civil Engineers, Engn Mech Div, Chinese Soc Ocean Engineers, Chinese Soc Naval Architects & Marine Engineers, Chinese Soc Theoret & Appl Mech, Russian Acad Sci, Singapore Struct Steel Soc, Norwegian Petr Soc, Inst Engineers Austr, Kansai Soc Naval Architects, Japan, IRO, Netherlands, Tech Res Ctr Finland, Soc Mat Sci, Japan, Offshore Engn Soc, UK, Ukraine Soc Mech Engineers, IFREMER, France, Scott Polat Res Inst DE piers; ports; deployable; causeways; bridges; single point moorings C1 USN, FACILIT ENGN SERV CTR, PORT HUENEME, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS PI CUPERTINO PA PO BOX 189, CUPERTINO, CA 95015-0189 USA SN 1098-6189 BN 1-880653-26-5 J9 INT OFFSHORE POLAR E PY 1996 BP 548 EP 552 PG 5 WC Engineering, Marine SC Engineering GA BF95H UT WOS:A1996BF95H00085 ER PT S AU Huang, ET AF Huang, ET BE Santos, JFD Langen, I Ueda, Y Puthli, RS TI An open sea modular construction method: Rigid pontoon connectors SO PROCEEDINGS OF THE SIXTH (1996) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL IV, 1996 SE International Offshore and Polar Engineering Conference Proceedings LA English DT Proceedings Paper CT 6th International Offshore and Polar Engineering Conference CY MAY 26-31, 1996 CL LOS ANGELES, CA SP Int Soc Offshore & Polar Engineers, Canadian Assoc Petr Producers, Amer Soc Civil Engineers, Engn Mech Div, Korea Comm Ocean Resources & Engn, Canadian Soc Civil Engineers, Engn Mech Div, Chinese Soc Ocean Engineers, Chinese Soc Naval Architects & Marine Engineers, Chinese Soc Theoret & Appl Mech, Russian Acad Sci, Singapore Struct Steel Soc, Norwegian Petr Soc, Inst Engineers Austr, Kansai Soc Naval Architects, Japan, IRO, Netherlands, Tech Res Ctr Finland, Soc Mat Sci, Japan, Offshore Engn Soc, UK, Ukraine Soc Mech Engineers, IFREMER, France, Scott Polat Res Inst DE pontoons; modular constructions; rigid connectors; open seas; progressive connection methods C1 USN, FACILIT ENGN SERV CTR, PORT HUENEME, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS PI CUPERTINO PA PO BOX 189, CUPERTINO, CA 95015-0189 USA SN 1098-6189 BN 1-880653-26-5 J9 INT OFFSHORE POLAR E PY 1996 BP 553 EP 558 PG 6 WC Engineering, Marine SC Engineering GA BF95H UT WOS:A1996BF95H00086 ER PT S AU Paguio, RF AF Paguio, RF BE Santos, JFD Langen, I Ueda, Y Puthli, RS TI Recording and tracking technologies: Opening a window to total asset visibility SO PROCEEDINGS OF THE SIXTH (1996) INTERNATIONAL OFFSHORE AND POLAR ENGINEERING CONFERENCE, VOL IV, 1996 SE International Offshore and Polar Engineering Conference Proceedings LA English DT Proceedings Paper CT 6th International Offshore and Polar Engineering Conference CY MAY 26-31, 1996 CL LOS ANGELES, CA SP Int Soc Offshore & Polar Engineers, Canadian Assoc Petr Producers, Amer Soc Civil Engineers, Engn Mech Div, Korea Comm Ocean Resources & Engn, Canadian Soc Civil Engineers, Engn Mech Div, Chinese Soc Ocean Engineers, Chinese Soc Naval Architects & Marine Engineers, Chinese Soc Theoret & Appl Mech, Russian Acad Sci, Singapore Struct Steel Soc, Norwegian Petr Soc, Inst Engineers Austr, Kansai Soc Naval Architects, Japan, IRO, Netherlands, Tech Res Ctr Finland, Soc Mat Sci, Japan, Offshore Engn Soc, UK, Ukraine Soc Mech Engineers, IFREMER, France, Scott Polat Res Inst DE Radio Frequency Identification (RFID); Automated Information Technology (AIT); asset tracking; interrogators; tags; logistics management C1 USN, FACILIT ENGN SERV CTR, PORT HUENEME, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU INTERNATIONAL SOCIETY OFFSHORE& POLAR ENGINEERS PI CUPERTINO PA PO BOX 189, CUPERTINO, CA 95015-0189 USA SN 1098-6189 BN 1-880653-26-5 J9 INT OFFSHORE POLAR E PY 1996 BP 559 EP 564 PG 6 WC Engineering, Marine SC Engineering GA BF95H UT WOS:A1996BF95H00087 ER PT B AU McElvany, SW AF McElvany, SW BE Kadish, KM Ruoff, RS TI Overview of gas phase/mass spectrometry session SO PROCEEDINGS OF THE SYMPOSIUM ON RECENT ADVANCES IN THE CHEMISTRY AND PHYSICS OF FULLERENES AND RELATED MATERIALS, VOL 3 SE ELECTROCHEMICAL SOCIETY SERIES LA English DT Proceedings Paper CT 3rd Symposium of the Fullerenes-Group of the Electrochemical-Society on Fullerenes - Chemistry, Physics, and New Directions VIII CY MAY 05-10, 1996 CL LOS ANGELES, CA SP Electrochem Soc, Fullerenes Grp RP McElvany, SW (reprint author), USN,RES LAB,DIV CHEM,CODE 6113,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELECTROCHEMICAL SOCIETY INC PI PENNINGTON PA 10 S MAIN ST, PENNINGTON, NJ 08534-2896 BN 1-56677-162-5 J9 ELEC SOC S PY 1996 VL 96 IS 10 BP 106 EP 107 PG 2 WC Chemistry, Physical; Electrochemistry SC Chemistry; Electrochemistry GA BJ92A UT WOS:A1996BJ92A00011 ER PT B AU McElvany, SW Holliman, CL AF McElvany, SW Holliman, CL BE Kadish, KM Ruoff, RS TI Gas-phase reactions of fullerene ions with ozone SO PROCEEDINGS OF THE SYMPOSIUM ON RECENT ADVANCES IN THE CHEMISTRY AND PHYSICS OF FULLERENES AND RELATED MATERIALS, VOL 3 SE ELECTROCHEMICAL SOCIETY SERIES LA English DT Proceedings Paper CT 3rd Symposium of the Fullerenes-Group of the Electrochemical-Society on Fullerenes - Chemistry, Physics, and New Directions VIII CY MAY 05-10, 1996 CL LOS ANGELES, CA SP Electrochem Soc, Fullerenes Grp RP McElvany, SW (reprint author), USN,RES LAB,DIV CHEM,CODE 6113,WASHINGTON,DC 20375, USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU ELECTROCHEMICAL SOCIETY INC PI PENNINGTON PA 10 S MAIN ST, PENNINGTON, NJ 08534-2896 BN 1-56677-162-5 J9 ELEC SOC S PY 1996 VL 96 IS 10 BP 121 EP 133 PG 13 WC Chemistry, Physical; Electrochemistry SC Chemistry; Electrochemistry GA BJ92A UT WOS:A1996BJ92A00013 ER PT B AU Pace, MD AF Pace, MD BE Kadish, KM Ruoff, RS TI Photoreaction of C-60 with NTO (5-nitro-2,4-dihydro-3H-1,2,4-triazol-3-one) SO PROCEEDINGS OF THE SYMPOSIUM ON RECENT ADVANCES IN THE CHEMISTRY AND PHYSICS OF FULLERENES AND RELATED MATERIALS, VOL 3 SE ELECTROCHEMICAL SOCIETY SERIES LA English DT Proceedings Paper CT 3rd Symposium of the Fullerenes-Group of the Electrochemical-Society on Fullerenes - Chemistry, Physics, and New Directions VIII CY MAY 05-10, 1996 CL LOS ANGELES, CA SP Electrochem Soc, Fullerenes Grp AB A photochemical free radical was detected from mixtures of C-60 in solution with 5-nitro-2,4-dihydro-3H-1,2,4-triazol-3-one (NTO), which is a new energetic material compound. Reaction of an NTO anion radical with C-60 is suggested. An NTO-. anion radical is formed by reduction with electron donors, and NTO in protic solvents has been shown to form an NTO+. cation radical during photolysis. A free radical was also detected from photochemical reaction of C-60 with 9,10-dihyrdoanthracene, as a model compound. RP Pace, MD (reprint author), USN,RES LAB,CODE 6120,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ELECTROCHEMICAL SOCIETY INC PI PENNINGTON PA 10 S MAIN ST, PENNINGTON, NJ 08534-2896 BN 1-56677-162-5 J9 ELEC SOC S PY 1996 VL 96 IS 10 BP 223 EP 227 PG 5 WC Chemistry, Physical; Electrochemistry SC Chemistry; Electrochemistry GA BJ92A UT WOS:A1996BJ92A00023 ER PT B AU McDonald, JR Robertson, R AF McDonald, JR Robertson, R BE Bell, RS Cramer, MH TI Sensor evaluation study for use with towed arrays for UXO site characterization SO PROCEEDINGS OF THE SYMPOSIUM ON THE APPLICATION OF GEOPHYSICS TO ENGINEERING AND ENVIRONMENTAL PROBLEMS LA English DT Proceedings Paper CT Symposium on the Application of Geophysics to Engineering and Environmental Problems (SAGEEP 96) CY APR 28-MAY 02, 1996 CL KEYSTONE, CO SP Environm & Engn Geophys Soc AB The Naval Research Laboratory is developing a Multi-sensor Towed Array Detection System (MTADS) with support from the DOD Environmental Security Technology Certification Program (ESTCP). In this effort we seek to extend and refine ordnance detection technology to more efficiently characterize OEW sites, identifying nonferrous and smaller items, distinguishing ordnance from clutter and analyzing clustered targets to identify and locate individual targets within complex target fields. Our evaluation shows that these goals are best met by combining magnetic and electromagnetic sensors. We report on field studies at a prepared test range of commercial sensors in arrays in various configurations and including; Cesium vapor magnetometers in single sensor and gradiometric configurations, fluxgate gradiometers, proton procession magnetometers, and electromagnetic pulsed induction sensors. The advantages and disadvantages of each technology and their applicability based upon survey requirements is discussed. We also discuss recommended data densities including horizontal sensor spacings, survey speeds, sensor heights and make recommendations about the appropriate use of gradiometers and active sensors. RP McDonald, JR (reprint author), USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ENVIRONMENTAL & ENGINEERING GEOPHYSICAL SOCIETY PI WHEAT RIDGE PA 10200 W 44TH AVE #304, WHEAT RIDGE, CO 80033 PY 1996 BP 451 EP 463 PG 13 WC Geochemistry & Geophysics; Engineering, Environmental; Environmental Sciences SC Geochemistry & Geophysics; Engineering; Environmental Sciences & Ecology GA BJ30J UT WOS:A1996BJ30J00046 ER PT B AU Wuchina, EJ Opeka, MM Brown, JJ Joslyn, D More, K AF Wuchina, EJ Opeka, MM Brown, JJ Joslyn, D More, K BE Besmann, TM Allendorf, MD Robinson, M Ulrich, RK TI Chemical vapor deposition of two-phase borides in the Hf-Si-B system SO PROCEEDINGS OF THE THIRTEENTH INTERNATIONAL CONFERENCE ON CHEMICAL VAPOR DEPOSITION SE ELECTROCHEMICAL SOCIETY SERIES LA English DT Proceedings Paper CT 13th International Conference on Chemical Vapor Deposition (CVD XIII), at the Electrochemical-Society Meeting CY MAY 05-10, 1996 CL LOS ANGELES, CA SP Electrochem Soc AB Two-phase HfB2-SiB4 coatings were prepared by hot-wall chemical vapor deposition techniques using HfCl4, SiCl4, BCl3 and H-2 as the reactants. Thermochemical modeling was used to identify deposition conditions. HfB2 and SiB4 were identified as the only deposition products, while both domed and faceted morphologies were found to exist for both phases. The differences in morphology and composition were determined to be greatly influenced by reactant specie gradients in the hot zone, while temperature and total pressure effects were less dramatic. RP Wuchina, EJ (reprint author), USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903, USA. RI More, Karren/A-8097-2016 OI More, Karren/0000-0001-5223-9097 NR 0 TC 0 Z9 0 U1 0 U2 1 PU ELECTROCHEMICAL SOCIETY INC PI PENNINGTON PA 10 S MAIN ST, PENNINGTON, NJ 08534-2896 BN 1-56677-155-2 J9 ELEC SOC S PY 1996 VL 96 IS 5 BP 750 EP 756 PG 7 WC Electrochemistry SC Electrochemistry GA BJ91W UT WOS:A1996BJ91W00114 ER PT J AU Richards, F AF Richards, F GP SAFE ASSOC TI Phase I results of NACES parachute repack cycle surveillance program SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB As parr of the requirements of the Navy Aircrew Common Ejection Seat (NACES), the parachute headbox assembly must be designed to allow a repack cycle of no less than. 5 years. To demonstrate the protection adequacy of the environmentally sealed NACES parachute headbox: assembly to permit a 6-year repack cycle, a two-phase surveillance program is being conducted to evaluate the condition of NACES parachute assemblies that have been in service far extended periods of time. Under Phase I of this program, 22 NACES parachute assemblies were recalled from various Fleet locations after a minimum of 3 years of in-service usage and replaced with new assemblies. The recalled assemblies were thoroughly examined by first carefully inspecting the interior of the headboxes for leakage or moisture intrusion. The permeability of the parachute canopy materials, the strength and elongation of the canopy gores, the strength of the riser assemblies, and breaking strength of the suspension lines were then measured. The results indicate that no degradation of the canopy material had occurred nor had any contaminants entered the parachute headbox. To evaluate the oldest Fleet-returned NACES parachute assemblies under operational conditions, two ejection tests were conducted. The tests were performed at the 0/0 ejection condition and at the condition that simulated a 600 KEAS ejection. The results showed no performance degradation or damage to the parachute canopy. Following these tests, Phase 2 of the program will be initiated in which an additional quantity of NACES parachute assemblies will be recalled from the Fleet and examined after 6 years of in-service usage. RP Richards, F (reprint author), USN,AIR WARFARE CTR,WEAP DIV,CREW SYST DEPT,CHINA LAKE,CA 93555, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 49 EP 66 PG 18 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00006 ER PT J AU Garner, KT Assenmacher, TJ AF Garner, KT Assenmacher, TJ GP SAFE ASSOC TI Improved airborne tactical situational awareness: It is possible! SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc RP Garner, KT (reprint author), USN,ELECT WARFARE ADV TECHNOL PROGRAM,WASHINGTON,DC 20066, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 147 EP 152 PG 6 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00017 ER PT J AU Marquette, TJ AF Marquette, TJ GP SAFE ASSOC TI Computational fluid dynamics analysis for improved escape system design SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB Computational fluid dynamics (CFD) codes have been implemented to support several escape system design and development efforts. Major advances in computational hardware and numerical techniques in the last few years have allowed CFD methods to become an effective design and analysis tool. CFD analysis has been performed to calculate escape system aerodynamic coefficients for six degree-of-freedom models, assess the performance of deployable surfaces for improved aerodynamic stability, analyze windblast protection concepts, and analyze rocket plume exhaust effects. CFD data has been incorporated into existing six degree-of-freedom (6DOF) trajectory models. Escape engineers use these models to predict the dynamic performance of conceptual designs for comparison to current systems. RP Marquette, TJ (reprint author), USN,AIR WARFARE CTR,DIV AIRCRAFT,IN FLIGHT ESCAPE SYST BRANCH,NAS PATUXENT RIVER,CODE 4621,PATUXENT RIVER,MD 20670, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 308 EP 317 PG 10 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00037 ER PT J AU Meyers, J AmRhein, EH AF Meyers, J AmRhein, EH GP SAFE ASSOC TI Aircrew integrated recovery survival armor vest and equipment developed for tri-service use SO PROCEEDINGS OF THE THIRTY-FOURTH ANNUAL SYMPOSIUM - SAFE ASSOCIATION LA English DT Proceedings Paper CT 34th Annual Symposium of the SAFE Association CY OCT 21-23, 1996 CL RENO, NV SP SAFE Assoc AB The Aircrew Integrated Recovery Survival Armor Vest and Equipment, or AIRSAVE, is a newly developed system that consists of three components: a survival vest, soft body armor and hard body armor. Floatation is considered an optional fourth component. The AIRSAVE survival vest features a removable hoisting harness and modular/removable pockets. It is compatible with all chemical-biological protective systems, various oxygen systems, all floatation systems, body armor systems and numerous survival equipment, The AIRSAVE soft body armor provides protection from fragmentation and small arms fire whereas the AIRSAVE hard body armor system protects the user from up to .30 caliber armor piercing rounds. The hard armor features a quick-release mechanism for emergency egress situations. The AIRSAVE system has been tested, evaluated and adopted by the Army, Navy and Marines. The Air Force is currently testing and evaluating the system. AIRSAVE is scheduled to be available as early as January 97. RP Meyers, J (reprint author), USN,AIR WARFARE CTR,DIV AIRCRAFT,CODE 4622,BLDG 2187 MAILSTOP 3,PATUXENT RIVER,MD 20670, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SAFE ASSOC PI YONCALLA PA 4995 SCOTTS VALLEY RD, PO BOX 490, YONCALLA, OR 97499-0490 PY 1996 BP 318 EP 322 PG 5 WC Engineering, Aerospace SC Engineering GA BG88W UT WOS:A1996BG88W00038 ER PT B AU Gray, JE Foster, GJ AF Gray, JE Foster, GJ BE NaraghiPour, M TI Filter coefficient selection using design criteria SO PROCEEDINGS OF THE TWENTY-EIGHTH SOUTHEASTERN SYMPOSIUM ON SYSTEM THEORY LA English DT Proceedings Paper CT 28th Southeastern Symposium on System Theory CY MAR 31-APR 02, 1996 CL BATON ROUGE, LA SP Louisiana State Univ, Dept Elect & Comp Engn, Louisiana State Univ, Coll Engn, IEEE, Control Syst Soc, IEEE, Baton Rouge Sect, IEEE, Comp Soc C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,DAHLGREN,VA 22448. NR 0 TC 5 Z9 5 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7352-4 PY 1996 BP 275 EP 279 DI 10.1109/SSST.1996.493513 PG 5 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Mathematics, Applied SC Automation & Control Systems; Computer Science; Engineering; Mathematics GA BF38M UT WOS:A1996BF38M00053 ER PT B AU Blair, WD BrandtPearce, M AF Blair, WD BrandtPearce, M BE NaraghiPour, M TI Estimation and discrimination for swerling targets SO PROCEEDINGS OF THE TWENTY-EIGHTH SOUTHEASTERN SYMPOSIUM ON SYSTEM THEORY LA English DT Proceedings Paper CT 28th Southeastern Symposium on System Theory CY MAR 31-APR 02, 1996 CL BATON ROUGE, LA SP Louisiana State Univ, Dept Elect & Comp Engn, Louisiana State Univ, Coll Engn, IEEE, Control Syst Soc, IEEE, Baton Rouge Sect, IEEE, Comp Soc C1 USN,CTR SURFACE WARFARE,SYST RES & TECHNOL DEPT,DAHLGREN,VA 22448. NR 0 TC 2 Z9 6 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7352-4 PY 1996 BP 280 EP 284 DI 10.1109/SSST.1996.493514 PG 5 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Mathematics, Applied SC Automation & Control Systems; Computer Science; Engineering; Mathematics GA BF38M UT WOS:A1996BF38M00054 ER PT B AU Blair, WD BrandtPearce, M AF Blair, WD BrandtPearce, M BE NaraghiPour, M TI Detection of multiple unresolved Rayleigh targets using quadrature monopulse measurements SO PROCEEDINGS OF THE TWENTY-EIGHTH SOUTHEASTERN SYMPOSIUM ON SYSTEM THEORY LA English DT Proceedings Paper CT 28th Southeastern Symposium on System Theory CY MAR 31-APR 02, 1996 CL BATON ROUGE, LA SP Louisiana State Univ, Dept Elect & Comp Engn, Louisiana State Univ, Coll Engn, IEEE, Control Syst Soc, IEEE, Baton Rouge Sect, IEEE, Comp Soc C1 USN,CTR SURFACE WARFARE,SYST RES & TECHNOL DEPT,DAHLGREN,VA 22448. NR 0 TC 1 Z9 1 U1 0 U2 1 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 BN 0-8186-7352-4 PY 1996 BP 285 EP 289 DI 10.1109/SSST.1996.493515 PG 5 WC Automation & Control Systems; Computer Science, Artificial Intelligence; Computer Science, Information Systems; Computer Science, Theory & Methods; Engineering, Electrical & Electronic; Mathematics, Applied SC Automation & Control Systems; Computer Science; Engineering; Mathematics GA BF38M UT WOS:A1996BF38M00055 ER PT B AU Atkinson, RJ McDonald, DL Phan, BG Metz, CW Chin, KC AF Atkinson, RJ McDonald, DL Phan, BG Metz, CW Chin, KC GP USENIX ASSOC TI Implementation of IPv6 in 4.4 BSD SO PROCEEDINGS OF THE USENIX 1996 ANNUAL TECHNICAL CONFERENCE LA English DT Proceedings Paper CT USENIX 1996 Annual Technical Conference CY JAN 22-26, 1996 CL SAN DIEGO, CA SP USENIX Assoc C1 USN,RES LAB,DIV INFORMAT TECHNOL,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU USENIX ASSOC PI BERKELEY PA SUITE 215, 2560 NINTH ST, BERKELEY, CA 94710 BN 1-880446-76-6 PY 1996 BP 113 EP 125 PG 13 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BF11Y UT WOS:A1996BF11Y00010 ER PT B AU Fishman, SG AF Fishman, SG BE Stoloff, NS Jones, RH TI Biasing reaction pathways in in-situ composites SO PROCESSING AND DESIGN ISSUES IN HIGH TEMPERATURE MATERIALS LA English DT Proceedings Paper CT Engineering Foundation Conference on Processing and Design Issues in High Temperature Materials CY MAY 19-24, 1996 CL DAVOS, SWITZERLAND SP AFOSR, Asea Brown Boveri - Power Generat Ltd, Pacific NW Natl Lab, GKSS, ONR, US DOE, TMS ID DIFFUSION; KINETICS; SYSTEMS; STATE; IRON AB In-situ composites include materials in which desirable reinforcements, matrices or interphases, are formed during processing. One of the most attrative approaches to obtaining such materials involves biasing reactions to alter the sequence of phase formation such that desirable phases and morphologies can obtained. Opportunities for this arise because of the multiplicity of diffusion pathways existing in systems which are of ternary order or higher. The paper discusses processing strategies which offer potential to produce stable, inexpensive composite designs. C1 Off Naval Res, Arlington, VA 22217 USA. RP Fishman, SG (reprint author), Off Naval Res, 800 N Quincy St, Arlington, VA 22217 USA. NR 16 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-357-0 PY 1996 BP 263 EP 275 PG 13 WC Engineering, Manufacturing; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Engineering; Materials Science; Metallurgy & Metallurgical Engineering GA BM46X UT WOS:000078833700020 ER PT B AU Kurihara, LK Chow, GM Lawrence, SH Schoen, PE AF Kurihara, LK Chow, GM Lawrence, SH Schoen, PE BE Suryanarayana, C Singh, J Froes, FH TI Polyol-derived synthesis of nanocrystalline metals SO PROCESSING AND PROPERTIES OF NANOCRYSTALLINE MATERIALS LA English DT Proceedings Paper CT Symposium on Processing and Properties of Nanocrystalline Materials, at the Materials Week 95 CY OCT 29-NOV 01, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Electr Magnet & Photon Mat Div, Chem & Phys Mat Com, m, Minerals Met & Mat Soc, Mat Design & Mfg Div, ASM MSD Int Mat Synthesis & P, roc Comm C1 USN,RES LAB,LAB MOLEC INTERFACIAL INTERACT,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-335-X PY 1996 BP 49 EP 58 PG 10 WC Engineering, Chemical; Materials Science, Characterization & Testing; Physics, Applied SC Engineering; Materials Science; Physics GA BG03Q UT WOS:A1996BG03Q00005 ER PT B AU Pande, CS Masumura, RA AF Pande, CS Masumura, RA BE Suryanarayana, C Singh, J Froes, FH TI A model for flow stress dependence on grain size for nanocrystalline solids SO PROCESSING AND PROPERTIES OF NANOCRYSTALLINE MATERIALS LA English DT Proceedings Paper CT Symposium on Processing and Properties of Nanocrystalline Materials, at the Materials Week 95 CY OCT 29-NOV 01, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Electr Magnet & Photon Mat Div, Chem & Phys Mat Com, m, Minerals Met & Mat Soc, Mat Design & Mfg Div, ASM MSD Int Mat Synthesis & P, roc Comm C1 USN,RES LAB,DIV MAT SCI & TECHNOL,WASHINGTON,DC 20375. NR 0 TC 14 Z9 14 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-335-X PY 1996 BP 387 EP 397 PG 11 WC Engineering, Chemical; Materials Science, Characterization & Testing; Physics, Applied SC Engineering; Materials Science; Physics GA BG03Q UT WOS:A1996BG03Q00034 ER PT B AU McNelley, TR Ballou, MA Dutta, I AF McNelley, TR Ballou, MA Dutta, I BE Rohatgi, PK TI A microstructural investigation of particle redistribution during thermomechanical processing of a cast 6061 Al-Al2O3 MMC SO PROCESSING, PROPERTIES, AND APPLICATIONS OF CAST METAL MATRIX COMPOSITES LA English DT Proceedings Paper CT Symposium on Cast Metal Matrix Composites - Processing, Properties, Applications at the 1996 TMS Fall Meeting CY OCT 06-10, 1996 CL CINCINNATI, OH SP TMS Composites Comm, ASM Composites Comm, TMS Solidificat Comm, MDMD Solidificat Comm, SMD Composites Mat Comm, MSD Composites Mat Comm ID 2ND PHASE PARTICLES; COMPOSITE AB The influence of strain and temperature on matrix microstructure and the redistribution of reinforcing Al2O3 particles during thermomechanical processing (TMP) of a 10 vol. pet. 6061 MMC was investigated. Cast MMC material was supplied by Duralcan-USA. Particle redistribution was investigated by controlled straining in a channel compression die following an initial hot forging operation. Particle stimulated nucleation of recrystallization at elevated temperature apparently facilitates redistribution of particles during elevated temperature processing. Strain hardening within clusters retards redistribution during low temperature processing. C1 USN, Postgrad Sch, Dept Mech Engn, Monterey, CA 93943 USA. RP McNelley, TR (reprint author), USN, Postgrad Sch, Dept Mech Engn, 700 Dyer Rd, Monterey, CA 93943 USA. NR 12 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-344-9 PY 1996 BP 143 EP 153 PG 11 WC Metallurgy & Metallurgical Engineering; Materials Science, Composites SC Metallurgy & Metallurgical Engineering; Materials Science GA BM46Y UT WOS:000078834500011 ER PT J AU Chang, EL Puranik, DJ Liu, F Chong, PLG AF Chang, EL Puranik, DJ Liu, F Chong, PLG TI Cyclam lipids as membrane-bound chelators SO PROGRESS IN BIOPHYSICS & MOLECULAR BIOLOGY LA English DT Meeting Abstract C1 USN,RES LAB,WASHINGTON,DC 20375. GEORGETOWN UNIV,WASHINGTON,DC 20057. TEMPLE UNIV,PHILADELPHIA,PA 19122. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0079-6107 J9 PROG BIOPHYS MOL BIO JI Prog. Biophys. Mol. Biol. PY 1996 VL 65 SU 1 BP PC520 EP PC520 PG 1 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA WE753 UT WOS:A1996WE75300509 ER PT J AU Scheps, R AF Scheps, R TI Upconversion laser processes SO PROGRESS IN QUANTUM ELECTRONICS LA English DT Review ID UP-CONVERSION LASER; TI-SAPPHIRE LASER; RARE-EARTH IONS; PHOTON-AVALANCHE; ROOM-TEMPERATURE; FIBER LASER; FLUOROZIRCONATE FIBER; GREEN; BLUE; CRYSTALS AB Pump processes that produce upconversion laser emission in trivalent rare earth ion-doped gain media are described, and the performance of upconversion lasers pumped by these processes is reviewed. Sequential two-photon absorption upconversion, cooperative energy transfer upconversion and photon avalanche upconversion are discussed in relation to the production of visible laser emission. Using Er:YALO as an example, the specific energy flow pathways for each of these pump processes are described in detail. Experimental results are presented for laser emission in Er:YALO pumped by sequential two-photon absorption, cooperative energy transfer and photon avalanche upconversion. The spectral and temporal dependence of upconversion emission is reviewed and experimental evidence for photon avalanche upconversion in Er:YALO is presented. The laser oscillation conditions including gain and loss are related to upconversion lasers using a three-level ion kinetics model. Rate equations are presented that illustrate the impact of various competing pump processes on the upconversion laser output. Upconversion laser emission under Q-switched operation is discussed and equations for optimum output coupling are presented. The design considerations for efficient upconversion laser resonators and pump optics are addressed. Upconversion laser results obtained over the past three decades are reviewed. The laser performance obtained for crystals doped with trivalent Pr, Nd, Er and Tm ions is discussed. Sensitized upconversion using Yb ion co-doping is described and results obtained for Yb-Er and Yb-Ho upconversion lasers are summarized. Upconversion fiber laser development is also reviewed and details are presented for room temperature upconversion laser emission using ZBLAN fibers doped with trivalent Pr, Nd, Ho, Er and Tm ions. The effect of upconversion processes on the efficiency and operation of conventional lasers is discussed. Upconversion pumping involving the upper laser level is shown to increase the laser threshold power and lower the optical conversion efficiency. Upconversion pumping involving the lower laser level of a self-terminating transition lowers the terminal level lifetime. The conditions are described under which upconversion pumping can enable cw laser operation on a self-terminating transition. Published by Elsevier Science Ltd C1 USN, COMMAND CONTROL & OCEAN SURVEILLANCE CTR, RES DEV TESTING & EVALUAT DIV, SAN DIEGO, CA 92152 USA. NR 83 TC 286 Z9 300 U1 9 U2 118 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0079-6727 J9 PROG QUANT ELECTRON JI Prog. Quantum Electron. PY 1996 VL 20 IS 4 BP 271 EP 358 DI 10.1016/0079-6727(95)00007-0 PG 88 WC Engineering, Electrical & Electronic SC Engineering GA VP202 UT WOS:A1996VP20200001 ER PT B AU Lasher, M Soltan, P Dahlke, W Acantilado, N McDonald, M AF Lasher, M Soltan, P Dahlke, W Acantilado, N McDonald, M BE Wu, MH TI Laser projected 3-D volumetric displays SO PROJECTION DISPLAYS II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 2nd Projection Displays Conference CY JAN 29-31, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE three-dimensional displays; volumetric displays; laser projection displays; laser scanning C1 USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,RDT&E DIV,SAN DIEGO,CA 92152. NR 0 TC 17 Z9 18 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2024-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2650 BP 285 EP 295 DI 10.1117/12.237012 PG 11 WC Optics SC Optics GA BF31B UT WOS:A1996BF31B00031 ER PT J AU Batzler, LR AF Batzler, LR GP ACAD RELIG & PSYCH RES TI The healing touch SO PSYCHIC & SPIRITUAL HEALING, PROCEEDINGS: THE ACADEMY OF RELIGION AND PSYCHICAL RESEARCH 21ST ANNUAL CONFERENCE LA English DT Proceedings Paper CT 21st Annual Conference of the Academy-of-Religion-and-Psychical-Research on Psychic and Spiritual Healing CY JUL 11-14, 1996 CL CHICAGO, IL SP Acad Relig & Psych Res AB Since the beginning of human history, touching has been a major expression of caring, curing, comforting and communicating. In contemporary health care, the use of the human touch is often eclipsed by the use of sophisticated instrumentation, medical specialization and patient overload. On the other hand, there is a growing awareness of the significance of touch for healing and a recognition of the need for more personal and gentle approaches to the healing process. Contemporary models of the healing touch are increasing and research is revealing the value and validity of these. This study describes the significance and functions of touch and examines some of the research of the effect of touch on growth, development and healing, Contemporary touch modalities and theories about the healing touch are noted. C1 USN,WASHINGTON,DC. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ACAD RELIGION & PSYCHICAL RESEARCH PI BLOOMFIELD PA PO BOX 614, BLOOMFIELD, CT 06002 PY 1996 BP 97 EP 107 PG 11 WC Religion SC Religion GA BH73N UT WOS:A1996BH73N00010 ER PT J AU Tateyama, CE Inoue, M Krichbaum, TP Baath, LB Kameno, S Rogers, AEE Alberdi, A Backer, DC Bartel, N Booth, RS Burke, BF Carlstrom, JE Dhawan, V Dickman, RL Emerson, DT Hirabayashi, H Hodges, MW Graham, DA Johnston, KJ Kobayashi, H Kus, AJ Padin, S Plambeck, RL Predmore, CR Quirrenbach, A Lawrence, CR Lamb, J Marcaide, JM Morimoto, M Ronnang, BO Shapiro, II Spencer, JH Witzel, A Woody, D Wright, MCH AF Tateyama, CE Inoue, M Krichbaum, TP Baath, LB Kameno, S Rogers, AEE Alberdi, A Backer, DC Bartel, N Booth, RS Burke, BF Carlstrom, JE Dhawan, V Dickman, RL Emerson, DT Hirabayashi, H Hodges, MW Graham, DA Johnston, KJ Kobayashi, H Kus, AJ Padin, S Plambeck, RL Predmore, CR Quirrenbach, A Lawrence, CR Lamb, J Marcaide, JM Morimoto, M Ronnang, BO Shapiro, II Spencer, JH Witzel, A Woody, D Wright, MCH TI Global 3- and 7-mm VLBI observations of OJ 287 SO PUBLICATIONS OF THE ASTRONOMICAL SOCIETY OF JAPAN LA English DT Article DE BL Lacertae objects; galaxies, active; galaxies, individual (OJ 287); radio sources, variable ID LACERTAE OBJECT OJ-287; POLARIZED RADIO OUTBURSTS; BL LACERTAE; SUPERLUMINAL MOTION; FLUX-DENSITY; 43 GHZ; BLAZARS AB We, present new results from global VLBI observations of the highly active blazar OJ 287 at 7 and 3 mm wavelengths. We show the first map of the mas to sub-mas structure of OJ 287 at 43 GHz and discuss this image in the context with models of the source structure seen at 100 GHz. C1 UNIV SAO PAULO, ESCOLA POLITECN, CRAAE, BR-05424970 SAO PAULO, SP, BRAZIL. MAX PLANCK INST RADIOASTRON, D-53121 BONN, GERMANY. ONSALA SPACE OBSERV, S-43900 ONSALA, SWEDEN. NE RADIO OBSERV CORP, HAYSTACK OBSERV, WESTFORD, MA 01886 USA. HARVARD SMITHSONIAN CTR ASTROPHYS, CAMBRIDGE, MA 02139 USA. INST SPACE & ASTRONAUT SCI, SAGAMIHARA, KANAGAWA 229, JAPAN. INST ASTROFIS ANDALUCIA, E-18080 GRANADA, SPAIN. MIT, CAMBRIDGE, MA 02139 USA. USN, RES LAB, WASHINGTON, DC 20375 USA. NRAO, TUCSON, AZ 85721 USA. CALTECH, OWENS VALLEY OBSERV, PASADENA, CA 91125 USA. RAMAN RES INST, BANGALORE 560012, KARNATAKA, INDIA. NICHOLAS COPERNICUS UNIV, TORUN RADIO OBSERV, TORUN, POLAND. UNIV CALIF BERKELEY, BERKELEY, CA 94720 USA. UNIV MASSACHUSETTS, AMHERST, MA 01003 USA. RP NOBEYAMA RADIO OBSERV, NAO, MINAMISA KU, NAGANO 38413, JAPAN. RI M, Manjunath/N-4000-2014 OI M, Manjunath/0000-0001-8710-0730 NR 26 TC 8 Z9 8 U1 1 U2 1 PU OXFORD UNIV PRESS PI OXFORD PA GREAT CLARENDON ST, OXFORD OX2 6DP, ENGLAND SN 0004-6264 EI 2053-051X J9 PUBL ASTRON SOC JPN JI Publ. Astron. Soc. Jpn. PY 1996 VL 48 IS 1 BP 37 EP 44 DI 10.1093/pasj/48.1.37 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TX404 UT WOS:A1996TX40400007 ER PT B AU Foster, RS Ray, PS Lundgren, SC Backer, DC Dexter, MR Zepka, A AF Foster, RS Ray, PS Lundgren, SC Backer, DC Dexter, MR Zepka, A BE Johnston, S Walker, MA Bailes, M TI A wide-bandwidth digital filterbank SO PULSARS: PROBLEMS AND PROGRESS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 160 on Pulsars - Problems and Progress CY JAN 08-12, 1996 CL UNIV SYDNEY, RES CTR THEORET ASTROPHYS, SYDNEY, AUSTRALIA SP Int Astron Union, Austr Telescope Natl Fac, Res Ctr Theoret Astrophys, Mt Stromlo & Sliding Springs Observ, Anglo Austr Observ, Int Union Radio Sci, Donovan Trust HO UNIV SYDNEY, RES CTR THEORET ASTROPHYS RP Foster, RS (reprint author), USN,RES LAB,RADIO INFRARED OPT SENSORS BRANCH,CODE 7210,WASHINGTON,DC 20375, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-25-2 J9 ASTR SOC P PY 1996 VL 105 BP 25 EP 26 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BH18U UT WOS:A1996BH18U00009 ER PT B AU Matsakis, DN Josties, FJ Foster, RS AF Matsakis, DN Josties, FJ Foster, RS BE Johnston, S Walker, MA Bailes, M TI An international pulsar data archive SO PULSARS: PROBLEMS AND PROGRESS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 160 on Pulsars - Problems and Progress CY JAN 08-12, 1996 CL UNIV SYDNEY, RES CTR THEORET ASTROPHYS, SYDNEY, AUSTRALIA SP Int Astron Union, Austr Telescope Natl Fac, Res Ctr Theoret Astrophys, Mt Stromlo & Sliding Springs Observ, Anglo Austr Observ, Int Union Radio Sci, Donovan Trust HO UNIV SYDNEY, RES CTR THEORET ASTROPHYS AB We have organized a system to provide pulsar profiles and time-of-arrivals (TOAs) via anonymous ftp and the World Wide Web (WWW) at the address http://orion.usno.navy.mil/archive.html. RP Matsakis, DN (reprint author), USN OBSERV,3450 MASSACUSETTS AVE NW,WASHINGTON,DC 20392, USA. 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 1-886733-25-2 J9 ASTR SOC P PY 1996 VL 105 BP 61 EP 62 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BH18U UT WOS:A1996BH18U00020 ER PT B AU Foster, RS AF Foster, RS BE Johnston, S Walker, MA Bailes, M TI Fundamental precision of pulsar timing SO PULSARS: PROBLEMS AND PROGRESS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 160 on Pulsars - Problems and Progress CY JAN 08-12, 1996 CL UNIV SYDNEY, RES CTR THEORET ASTROPHYS, SYDNEY, AUSTRALIA SP Int Astron Union, Austr Telescope Natl Fac, Res Ctr Theoret Astrophys, Mt Stromlo & Sliding Springs Observ, Anglo Austr Observ, Int Union Radio Sci, Donovan Trust HO UNIV SYDNEY, RES CTR THEORET ASTROPHYS RP Foster, RS (reprint author), USN,RES LAB,RADIO INFRARED OPT SENSORS BRANCH,CODE 7210,WASHINGTON,DC 20375, USA. 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 1-886733-25-2 J9 ASTR SOC P PY 1996 VL 105 BP 83 EP 86 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BH18U UT WOS:A1996BH18U00023 ER PT B AU Matsakis, DN Josties, FJ Foster, RS AF Matsakis, DN Josties, FJ Foster, RS BE Johnston, S Walker, MA Bailes, M TI Pulsar astrometry and improved terrestrial clocks SO PULSARS: PROBLEMS AND PROGRESS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 160 on Pulsars - Problems and Progress CY JAN 08-12, 1996 CL UNIV SYDNEY, RES CTR THEORET ASTROPHYS, SYDNEY, AUSTRALIA SP Int Astron Union, Austr Telescope Natl Fac, Res Ctr Theoret Astrophys, Mt Stromlo & Sliding Springs Observ, Anglo Austr Observ, Int Union Radio Sci, Donovan Trust HO UNIV SYDNEY, RES CTR THEORET ASTROPHYS AB Recent improvements in cesium and hydrogen terrestrial frequency standards have brought the frequency precision of International Atomic Time (TAI) to a value of 2.5E-15 s/s over an averaging time of a month. In this paper we illustrate the improvement graphically, and discuss the state of the art for frame ties between the radio, dynamical, and optical frames. In a larger paper, available via the World Wide Web, we illustrate the measured accuracy curves of the frequency standards, show their effect on the ensemble time scales, explain the reasons for the confusing array of available time scales, and discuss the inverse problem of using pulsar data to correct the terrestrial time scale. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Matsakis, DN (reprint author), USN OBSERV,WASHINGTON,DC 20392, USA. 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 1-886733-25-2 J9 ASTR SOC P PY 1996 VL 105 BP 113 EP 114 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BH18U UT WOS:A1996BH18U00033 ER PT B AU Lundgren, SC Foster, RS Camilo, F AF Lundgren, SC Foster, RS Camilo, F BE Johnston, S Walker, MA Bailes, M TI Hubble space telescope observations of millisecond pulsar companions: Constraints on evolution SO PULSARS: PROBLEMS AND PROGRESS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 160 on Pulsars - Problems and Progress CY JAN 08-12, 1996 CL UNIV SYDNEY, RES CTR THEORET ASTROPHYS, SYDNEY, AUSTRALIA SP Int Astron Union, Austr Telescope Natl Fac, Res Ctr Theoret Astrophys, Mt Stromlo & Sliding Springs Observ, Anglo Austr Observ, Int Union Radio Sci, Donovan Trust HO UNIV SYDNEY, RES CTR THEORET ASTROPHYS AB In observations of six binary millisecond pulsars with the Hubble Space Telescope, we have discovered white dwarf companions to PSRs J0034-0534, J1022 + 1001, J1713 + 0747, and J2019 + 2425 and improved photometry on PSRs J1640 + 2224 and J2145-0750. Three of the white dwarfs are among the coolest and oldest known. We have determined that the masses for the helium companions are consistent with the expectation based on the core mass of a progenitor that filled its Roche lobe. The cooling times for many of the white dwarfs are much less than the characteristic spin-down times, implying that the spin period at the end of the accretion stage was close to the current period. The initial spin periods calculated are used to place limits on the accretion rate at the end of the low-mass X-ray binary phase. The accretion rates are found to be over an order of magnitude less than the Eddington rate. RP Lundgren, SC (reprint author), USN,RES LAB,REMOTE SENSING DIV,CODE 7213,WASHINGTON,DC 20375, USA. NR 0 TC 16 Z9 16 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-25-2 J9 ASTR SOC P PY 1996 VL 105 BP 497 EP 500 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BH18U UT WOS:A1996BH18U00136 ER PT B AU Lundgren, SC Ergma, E Cordes, JM AF Lundgren, SC Ergma, E Cordes, JM BE Johnston, S Walker, MA Bailes, M TI A millisecond pulsar progenitor to an ultra-compact low-mass X-ray binary SO PULSARS: PROBLEMS AND PROGRESS SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT IAU Colloquium 160 on Pulsars - Problems and Progress CY JAN 08-12, 1996 CL UNIV SYDNEY, RES CTR THEORET ASTROPHYS, SYDNEY, AUSTRALIA SP Int Astron Union, Austr Telescope Natl Fac, Res Ctr Theoret Astrophys, Mt Stromlo & Sliding Springs Observ, Anglo Austr Observ, Int Union Radio Sci, Donovan Trust HO UNIV SYDNEY, RES CTR THEORET ASTROPHYS AB We discuss a twist in binary neutron star evolution scenarios in which a millisecond pulsar system is actually a progenitor for a low-mass X-ray binary system. After 7 billion years of orbital decay due to gravitational radiation, the millisecond pulsar PSR J0751+1807 will enter a low-mass X-ray binary phase. When the orbital period reaches about 5 minutes, the white dwarf will overflow its Roche lobe, transferring mass to the neutron star. Its predicted observational X-ray parameters are very similar to the ultra-compact low-mass X-ray binary 1820-303. The ultimate fate of the system after Roche-lobe overflow is unknown. One possibility is that the companion may eventually tidally disrupt, leaving a disk of material which could form into planets. RP Lundgren, SC (reprint author), USN,RES LAB,CODE 7210,WASHINGTON,DC 20375, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-25-2 J9 ASTR SOC P PY 1996 VL 105 BP 521 EP 522 PG 2 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BH18U UT WOS:A1996BH18U00141 ER PT J AU Lee, DC AF Lee, DC TI On effects of arrival rate and burstiness in the queueing system: Analysis of Lb/D/1 SO QUEUEING SYSTEMS LA English DT Article DE leaky bucket; arrival rate; burstiness; average queueing delay AB This paper studies a single-server queueing system with deterministic service time in which arrivals are regulated by the leaky-bucket mechanism. This paper intends to improve quantitative understanding of the effects of arrival rate and burstiness on the average delay of queueing systems. The study is directed toward identifying the worst traffic of arrivals allowed by the leaky-bucket regulation and clarifying the effects of the leaky bucket parameters (which represent the arrival rate and burstiness) on the average queueing delay. The arrival traffic that maximizes the average queueing delay is characterized as the repetition of the following three phases: bulky arrival, greedy arrival for a specified length of interval, and then no arrival till the token bucket is full. The average queueing delay for the worst traffic is expressed as a function the leaky bucket parameters. RP Lee, DC (reprint author), USN,RES LAB,CODE 8141,WASHINGTON,DC 20375, USA. NR 16 TC 2 Z9 2 U1 0 U2 0 PU BALTZER SCI PUBL BV PI AMSTERDAM PA ASTERWEG 1A, 1031 HL AMSTERDAM, NETHERLANDS SN 0257-0130 J9 QUEUEING SYST JI Queuing Syst. PY 1996 VL 22 IS 1-2 BP 175 EP 188 DI 10.1007/BF01159400 PG 14 WC Computer Science, Interdisciplinary Applications; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA UW330 UT WOS:A1996UW33000011 ER PT B AU Boerner, WM Verdi, JS AF Boerner, WM Verdi, JS BE Miceli, WJ TI Wideband interferometric sensing and imaging polarimetry, and its relevance to wide-area military surveillance and environmental monitoring of the terrestrial and planetary covers SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE wideband radar polarimetry; polarimetric (scattering matrix) radar and optical polarimetry; topographic interferometric POL-SAR imaging AB 'WISIP: Wideband (mu Hz - PHz) Interferometric Sensing and Imaging Polarimetry' has become an important, indispensable tool in wide area military surveillance and global environmental monitoring of the terrestrial and planetary cove rs. It enables dynamic, real-time optimal feature extraction of significant characteristics of desirable targets and/or target sections with simultaneous suppression of undesirable background clutter and propagation path speckle at hitherto unknown clarity and never before achieved quality. 'WISIP' may be adopted to the Detection, Recognition and Identification (DRI) of any stationary, moving or vibrating target or distributed scatterer segments versus arbitrary stationary, dynamically changing and/or moving geo-physical/ecological environments, provided the instantaneous 2x2 phasor (Jones/Sinclair) and 4x4 power density (Mueller/Kennaugh) matrices for forward-propagation/backward-scattering, respectively, can be measured with sufficient accuracy. For example, the DRI of stealthy, dynamically moving and/or camouflaged stationary objects occluded deeply into heterogeneous stationary and/or dynamically moving inhomogeneous volumetric scatter environments such as precipitation scatter, the ocean sea/lake surface boundary layers, the littoral coastal surf zones, pack-ice and snow or vegetative canopies, dry sands and soils, etc., can now be successfully realized. A comprehensive overview is presented on how these modern high resolution/precision, complete polarimetric coregistered signature sensing and imaging techniques, complemented by full integration of novel navigational electronic tools, such as DGPS, will advance electromagnetic vector wave sensing and imaging towards the limits of physical realizability. Various examples utilizing most recent image data take sets of the NAWC/ERIM-P3-UWB-TOPIF'E-CATI/LTBL-POLSAR and NASA-JPL-AIRSAR airborne, the NASA/DARA/DASI-SIR-C/X-SAR shuttle, and the ESA ERS-1/2 satellite imaging systems will be presented for demonstrating the utility of WISIP. RP Boerner, WM (reprint author), USN,CTR AIR WARFARE,DIV AIRCRAFT,WAR,MISSION AV ADV SENSORS,UWB TOPIFE POLSAR PROGRAM,WARMINSTER,PA 18974, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 98 EP 107 DI 10.1117/12.257213 PG 10 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00010 ER PT B AU Trischman, JA AF Trischman, JA BE Miceli, WJ TI Real-time motion compensation algorithms for ISAR imaging of aircraft SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE radar imaging; ISAR; motion compensation AB When generating inverse synthetic aperture radar (ISAR) images of a rapidly moving target such as an aircraft, motion compensation is an essential step. This process of removing the effects of the target's radial motion is required because the target usually moves a distance that is many times larger than the radar's range resolution during the time that the data for an image is being collected. This processing requires estimation of the target motion to within a fraction of a wavelength before useful images can be generated. To generate ISAR images in real-time, the estimation and correction processing must be performed hundreds of times per second. This level of processing performance is becoming possible using currently available digital signal processor (DSP) devices. The Naval Command, Control and Ocean Surveillance Center (NCCOSC) Research, Development, Test and Evaluation Division (NRaD) developed a linear frequency modulated (LFM) radar for ISAR imaging of aircraft.(1) Motion compensation and imaging techniques were developed to process data collected by this radar. These algorithms are categorized according to the accuracy of the motion estimate they provide. The performance of the algorithms is measure when they are applied to data collected using the NRaD LFM radar. The implications of these results for more general applications are examined. RP Trischman, JA (reprint author), USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,RDT&E DIV,53560 HULL ST,SAN DIEGO,CA 92152, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 110 EP 119 DI 10.1117/12.257214 PG 10 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00011 ER PT B AU Chen, VC AF Chen, VC BE Miceli, WJ TI Adaptive time-frequency ISAR processing SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE radar imaging; adaptive wavelet transform; time-frequency processing AB Conventional radar processors use the Fourier transform to retrieve Doppler information. In order to use the Fourier transform adequately, some restrictions must be applied: the scatterers must remain in their range cells and their Doppler frequency contents should be stationary during the entire imaging time duration. If the Doppler frequency contents are time-varying, the Doppler spectrum obtained from the Fourier transform becomes smeared, and, thus, the image resolution is degraded. However, the restrictions on the Fourier processing can be lifted if the Doppler information can be retrieved with the time-frequency transform which does not require a stationary Doppler spectrum. Therefore, the image blurring caused by the time-varying Doppler spectrum can be resolved without applying sophisticated motion compensation techniques to the individual scatterers. RP Chen, VC (reprint author), USN,RES LAB,DIV RADAR,WASHINGTON,DC 20375, USA. NR 0 TC 2 Z9 2 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 133 EP 140 DI 10.1117/12.257216 PG 8 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00013 ER PT B AU Borden, B AF Borden, B BE Miceli, WJ TI Cross-entropy regularization and complex-valued image analysis applicable to ISAR SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE entropy; regularization; SAR; ISAR AB The problem of image analysis when the image is complex-valued (as in SAR/ISAR) is becoming increasingly important in problems where the complex nature of the scattering mechanism cannot be ignored. Such problems include automatic target recognition and cross-section reduction. Traditional approaches have sought to apply standard methods in intensity-based imaging to these problems by discarding the inherent phase content. Other methods have been developed but are often ad hoc and insufficiently motivated. We will examine this problem and some of the recent approaches suggested for its solution. RP Borden, B (reprint author), USN,AIR WARFARE CTR,WEAPONS DIV,RES & TECHNOL DIV,CHINA LAKE,CA 93555, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 175 EP 182 DI 10.1117/12.257221 PG 8 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00017 ER PT B AU Knaell, K AF Knaell, K BE Miceli, WJ TI Advances in three-dimensional SAR from practical apertures SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE 3D; SAR; CLEAN; IMP; RELAX; radar; synthetic; aperture; image AB Three-dimensional images have been produced from SAR data limited to curved aperture paths by imaging techniques usually associated with two dimensional image resolution enhancement. CLEAN and IMP/RELAX algorithms have produced images for two different measurement scenarios. Dynamic range of CLEAN images are dependent upon levels at which artifacts occur although valid scatterers appear below such levels. Artifacts occur due to focusing errors in IMP/RELAX images and in addition due to sidelobe leakage effects in CLEAN images. These are accentuated by the very large sidelobes of shallow apertures. Autofocused images are significantly sharper than those from initial aperture estimates. Methods to expand the processed image volume will extend the general usefulness of this technique as will methods to estimate and display subtle variations in fully populated 3D image volumes. For these purposes resampeling of data onto a rectilinear grid may allow use of image estimation techniques already proven useful for 2D imaging. RP Knaell, K (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,BETHESDA,MD 20084, 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 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 183 EP 193 DI 10.1117/12.257222 PG 11 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00018 ER PT B AU Matthews, PJ Frankel, MY Esman, RD AF Matthews, PJ Frankel, MY Esman, RD BE Miceli, WJ TI Two-dimensional, fiber-optic control of a wideband array transmitter SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE phased array; optical control; fiber-optic; wideband; true time-delay AB We report on the first demonstration of a two-dimensional, fiber-optic, true time-delay control system capable of squint-free steering of an ultrawideband array. The system is based on a novel fiber-optic prism technique with separate azimuth and elevation control stages. In this technique, high dispersion fiber is used to provide a wavelength-dependent time-delay between the rows and columns of the array. The fiber-optic control system was used to drive a 4x4 array of flared-notch elements. The system was tested in a compact radar range and two-dimensional array patterns were obtained, The system demonstrated independent +/- 30 degrees azimuth and +/- 30 degrees elevation steering of a 4x4 array over a 6 to 18 GHz bandwidth with no observable squint. We believe this is the first demonstration of such a system. The design of the demonstrated system allows for transitioning to larger, real-world ultrawideband array transmitters. RP Matthews, PJ (reprint author), USN,RES LAB,DIV OPT SCI,CODE 5672,WASHINGTON,DC 20375, 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 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 246 EP 256 DI 10.1117/12.257229 PG 11 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00024 ER PT B AU Gill, GS Huang, JC AF Gill, GS Huang, JC BE Miceli, WJ TI Analysis of step frequency radar using ambiguity function SO RADAR PROCESSING, TECHNOLOGY, AND APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Radar Processing, Technology, and Applications CY AUG 05-06, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE ambiguity function; step frequency radar AB High range resolution capability provides many advantages in radar but it requires large bandwidth systems. However with step frequency radars it is possible to achieve high resolution of wideband systems with many of the advantages of narrow band systems. In this paper ambiguity function is employed to study step frequency radar. The mathematical expression is derived for the ambiguity function of step frequency radar receiver and processor. The processor functions included are range gating, weighting, fill pulses and inverse discrete Fourier transform (IDFT). Ambiguity diagrams are plotted for step frequency receiver processor and comparison is made with traditional constant frequency radar. RP Gill, GS (reprint author), USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,CODE EC-GL,MONTEREY,CA 93943, 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 0-8194-2233-9 J9 P SOC PHOTO-OPT INS PY 1996 VL 2845 BP 333 EP 342 DI 10.1117/12.257237 PG 10 WC Optics SC Optics GA BG72J UT WOS:A1996BG72J00033 ER PT B AU Buchner, S Campbell, AB McMorrow, D Melinger, J Masti, M Chen, YJ AF Buchner, S Campbell, AB McMorrow, D Melinger, J Masti, M Chen, YJ GP CNES TI Modification of single event upset cross section of an SRAM at high frequencies SO RADECS 95 - THIRD EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS LA English DT Proceedings Paper CT 3rd European Symposium on Radiation and Its Effects on Components and Systems (RADECS 95) CY SEP 18-22, 1995 CL ARCACHON, FRANCE SP CNES, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3093-5 PY 1996 BP 326 EP 332 PG 7 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG04Z UT WOS:A1996BG04Z00056 ER PT B AU McMorrow, D Weatherford, TR Knudson, AR Buchner, S Melinger, JS Tran, LH Campbell, AB Marshall, PW Dale, CJ Peczalski, A Baier, S AF McMorrow, D Weatherford, TR Knudson, AR Buchner, S Melinger, JS Tran, LH Campbell, AB Marshall, PW Dale, CJ Peczalski, A Baier, S GP CNES TI Charge-collection characteristics of GaAs heterostructure FETs fabricated with a low-temperature grown GaAs buffer layer SO RADECS 95 - THIRD EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS LA English DT Proceedings Paper CT 3rd European Symposium on Radiation and Its Effects on Components and Systems (RADECS 95) CY SEP 18-22, 1995 CL ARCACHON, FRANCE SP CNES, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3093-5 PY 1996 BP 373 EP 378 PG 6 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG04Z UT WOS:A1996BG04Z00063 ER PT B AU Griscom, DL AF Griscom, DL GP CNES TI gamma-Ray-induced optical attenuation in Ge-doped-silica fiber image guides SO RADECS 95 - THIRD EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS LA English DT Proceedings Paper CT 3rd European Symposium on Radiation and Its Effects on Components and Systems (RADECS 95) CY SEP 18-22, 1995 CL ARCACHON, FRANCE SP CNES, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3093-5 PY 1996 BP 420 EP 424 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG04Z UT WOS:A1996BG04Z00071 ER PT B AU Griscom, DL AF Griscom, DL GP CNES TI Radiation hardening of pure-silica-core optical fibers by ultra-high-dose gamma-ray pre-irradiation SO RADECS 95 - THIRD EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS LA English DT Proceedings Paper CT 3rd European Symposium on Radiation and Its Effects on Components and Systems (RADECS 95) CY SEP 18-22, 1995 CL ARCACHON, FRANCE SP CNES, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3093-5 PY 1996 BP 498 EP 502 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG04Z UT WOS:A1996BG04Z00085 ER PT B AU Dale, CJ Marshall, PW Fritz, ME deLaChapelle, M Carts, MA LaBel, KA AF Dale, CJ Marshall, PW Fritz, ME deLaChapelle, M Carts, MA LaBel, KA GP CNES TI System level radiation response of a high performance fiber optic data bus SO RADECS 95 - THIRD EUROPEAN CONFERENCE ON RADIATION AND ITS EFFECTS ON COMPONENTS AND SYSTEMS LA English DT Proceedings Paper CT 3rd European Symposium on Radiation and Its Effects on Components and Systems (RADECS 95) CY SEP 18-22, 1995 CL ARCACHON, FRANCE SP CNES, RADECS Assoc, IEEE, Nucl & Plasma Sci Soc C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-7803-3093-5 PY 1996 BP 531 EP 538 PG 8 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA BG04Z UT WOS:A1996BG04Z00091 ER PT J AU Xapsos, MA Burke, EA Shapiro, P Summers, GP AF Xapsos, MA Burke, EA Shapiro, P Summers, GP TI Probability distributions of energy deposition and ionization in sub-micrometer sites of condensed media SO RADIATION MEASUREMENTS LA English DT Article ID CHORD-LENGTH DISTRIBUTIONS; EVENTS; PARTICLES AB A general analytic approach is developed for calculating both the energy deposition distributions and the ionization distributions produced by ions incident on target sites with dimensions that range from micrometers down to a few nanometers. The effect of target geometry, energy-loss straggling, transport of energy from the site by secondary electrons and Fano fluctuations on the ionization distribution is clearly delineated as a function of target size. As an example, the ionization distributions produced by 1 MeV protons randomly incident on small spherical sites of silicon are calculated. The approach should be useful in a wide variety of research areas including radiation effects in microelectronics, microlithography, radiation biology and thermoluminescence dosimetry. C1 SFA INC,LANDOVER,MD 20785. UNIV MARYLAND,DEPT PHYS,CATONSVILLE,MD 21228. RP Xapsos, MA (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 47 TC 16 Z9 16 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 1350-4487 J9 RADIAT MEAS JI Radiat. Meas. PD JAN PY 1996 VL 26 IS 1 BP 1 EP 9 DI 10.1016/1350-4487(95)00296-0 PG 9 WC Nuclear Science & Technology SC Nuclear Science & Technology GA TN243 UT WOS:A1996TN24300001 ER PT J AU Cassata, JR Schauer, DA Nelson, ME Pertmer, GA Riel, GK AF Cassata, JR Schauer, DA Nelson, ME Pertmer, GA Riel, GK TI Impact of the revised ANSI standard on accredited thermoluminescence dosemeter processors SO RADIATION PROTECTION DOSIMETRY LA English DT Article ID DOSIMETRY; ALGORITHMS AB Recent changes in ANSI N13:11 (1993) will have an impact on the performance of thermoluminescence dosimetry algorithms used to determine dose equivalent measurements. Accredited processors should update their algorithms to account for these changes. This paper quantifies the performance impact from the addition of beam codes M60 and H150, changes in C-K, and testing at angles. A predictive model that will determine new correction factors used in the calculation of dose equivalent is presented. A comparative study between predicted and experimental values is made and the validity of this approach is demonstrated with a proficiency test using the predicted values on a set of dosemeters irradiated at Pacific Northwest National Laboratory (PNNL). Extensive angular testing was also done at the National Institute of Standards and Technology (NIST) and is reported. RP Cassata, JR (reprint author), USN ACAD,ENGN & WEAPONS DIV,RICKOVER BLDG,590 HOLLOWAY RD,ANNAPOLIS,MD 21402, USA. NR 11 TC 2 Z9 2 U1 0 U2 0 PU NUCLEAR TECHNOLOGY PUBL PI ASHFORD PA PO BOX 7, ASHFORD, KENT, ENGLAND TN23 1YW SN 0144-8420 J9 RADIAT PROT DOSIM JI Radiat. Prot. Dosim. PY 1996 VL 67 IS 3 BP 167 EP 177 PG 11 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA VL320 UT WOS:A1996VL32000002 ER PT J AU Mathur, VK Barkyoumb, JH Abbundi, RJ Chakrabarti, K Bloomsburg, CD Braunlich, PF Hegland, JE Hoffman, JM Hoelscher, JW Kelly, AE Thompson, JL Tetzlaff, W AF Mathur, VK Barkyoumb, JH Abbundi, RJ Chakrabarti, K Bloomsburg, CD Braunlich, PF Hegland, JE Hoffman, JM Hoelscher, JW Kelly, AE Thompson, JL Tetzlaff, W TI Performance of a laser heated TLD system for personnel radiation dosimetry SO RADIATION PROTECTION DOSIMETRY LA English DT Article; Proceedings Paper CT 11th International Conference on Solid State Dosimetry CY JUL 10-14, 1995 CL BUDAPEST, HUNGARY SP Bubble Technol Ind, Harshaw Bicron Technol Vertriebs GmbH, Hungarian Acad Sci, Hungarian Natl Comm Technol Dev, Inst Isotopes, Hungary, Landauer Inc, Nucl Technol Publ, Paks Nucl Power Plant Ltd, Rados Technol Oy, Siemens Environm Syst Ltd, Studsvik Instrument AB, Victoreen Inc AB Prototypes of a laser heated thermoluminescence dosimetry system containing of a multi-element badge capable of measuring deep and shallow photon dose as well as neutron dose were evaluated for personnel dosimetry. The brief details of the automated reader and badge design are presented, The system can discriminate between low and high energy photons and uses an algorithm to apply appropriate corrections stored in the system. Dosimetric performance of the system for personnel level doses are discussed here. Data for the batch response of badges is presented. RP Mathur, VK (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,WHITE OAK SITE,SILVER SPRING,MD 20903, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU NUCLEAR TECHNOLOGY PUBL PI ASHFORD PA PO BOX 7, ASHFORD, KENT, ENGLAND TN23 1YW SN 0144-8420 J9 RADIAT PROT DOSIM JI Radiat. Prot. Dosim. PY 1996 VL 66 IS 1-4 BP 79 EP 82 PN 2 PG 4 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA VR888 UT WOS:A1996VR88800017 ER PT J AU Lewandowski, AC Mathur, VK AF Lewandowski, AC Mathur, VK TI High dose and phototransferred thermoluminescence in CaSO4, CaSO4:Dy, and CaSO4:Tm SO RADIATION PROTECTION DOSIMETRY LA English DT Article; Proceedings Paper CT 11th International Conference on Solid State Dosimetry CY JUL 10-14, 1995 CL BUDAPEST, HUNGARY SP Bubble Technol Ind, Harshaw Bicron Technol Vertriebs GmbH, Hungarian Acad Sci, Hungarian Natl Comm Technol Dev, Inst Isotopes, Hungary, Landauer Inc, Nucl Technol Publ, Paks Nucl Power Plant Ltd, Rados Technol Oy, Siemens Environm Syst Ltd, Studsvik Instrument AB, Victoreen Inc ID HIGH-TEMPERATURE; DOSIMETRY; EMISSION AB An investigation is presented to test the feasibility of extending the usefulness of the CaSO4 phosphor doped with Tm or Dy into the high dose/high temperature regime. The doses studied ranged from I kGy to 100 kGy obtained from gamma ray and flash electron beam sources. Intregrated glow curve signals in the 'dosimetry range' (similar to 100-350 degrees C) and the high temperature range (similar to 350-600 degrees C) are measured as a function of dose. Integrated UV phototransferred thermoluminescence signals (similar to 100-300 degrees C) are similarly considered. For powdered samples doped to 0.1 mol.%, the onset of saturation occurs near 10 kGy. This establishes that thermoluminescence dosimetry for industrial food processing (pasteurisation, disinfestation, radicidation and radurisation) is a possibility. RP Lewandowski, AC (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,WHITE OAK SITE,CODE 682,SILVER SPRING,MD 20903, USA. NR 12 TC 3 Z9 3 U1 0 U2 0 PU NUCLEAR TECHNOLOGY PUBL PI ASHFORD PA PO BOX 7, ASHFORD, KENT, ENGLAND TN23 1YW SN 0144-8420 J9 RADIAT PROT DOSIM JI Radiat. Prot. Dosim. PY 1996 VL 66 IS 1-4 BP 213 EP 216 PN 2 PG 4 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA VR888 UT WOS:A1996VR88800046 ER PT J AU Lewandowski, AC Barkyoumb, JH Mathur, VK AF Lewandowski, AC Barkyoumb, JH Mathur, VK TI Thermoluminescence emission, excitation and stimulation spectra of CaSO4:Dy and CaSO4:Tm SO RADIATION PROTECTION DOSIMETRY LA English DT Article; Proceedings Paper CT 11th International Conference on Solid State Dosimetry CY JUL 10-14, 1995 CL BUDAPEST, HUNGARY SP Bubble Technol Ind, Harshaw Bicron Technol Vertriebs GmbH, Hungarian Acad Sci, Hungarian Natl Comm Technol Dev, Inst Isotopes, Hungary, Landauer Inc, Nucl Technol Publ, Paks Nucl Power Plant Ltd, Rados Technol Oy, Siemens Environm Syst Ltd, Studsvik Instrument AB, Victoreen Inc AB The results of thermoluminescence (TL) emission and excitation spectra for CaSO4:Dy and CaSO4:Tm are presented. TL emission as a function of temperature verifies that the lattice defect and Dy3+(Tm3+) emissions possess the same peak temperature. Excitation spectra establish the presence of a 'spectral overlap' between Dy3+(Tm3+) absorption and lattice defect emission in the 340-360 nm range. The excitation spectrum is observed initially to increase and then decay over the temperature range corresponding to the production of TL. Over this same temperature range, a lattice-related broad-band structure emerges corresponding to the creation of centres which are capable of transferring energy to Dy3+(Tm3+) ions. Laser stimulation at 266 and 532 nm produces optically stimulated luminescence (OSL) in CaSO4:Dy. The production of OSL by 266 and 532 nm stimulation is shown to cause a reduction in the TL glow curve. RP Lewandowski, AC (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,WHITE OAK SITE,CODE 682,SILVER SPRING,MD 20903, USA. NR 10 TC 9 Z9 9 U1 1 U2 4 PU NUCLEAR TECHNOLOGY PUBL PI ASHFORD PA PO BOX 7, ASHFORD, KENT, ENGLAND TN23 1YW SN 0144-8420 J9 RADIAT PROT DOSIM JI Radiat. Prot. Dosim. PY 1996 VL 65 IS 1-4 BP 281 EP 286 PN 1 PG 6 WC Environmental Sciences; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging SC Environmental Sciences & Ecology; Public, Environmental & Occupational Health; Nuclear Science & Technology; Radiology, Nuclear Medicine & Medical Imaging GA VC414 UT WOS:A1996VC41400067 ER PT B AU Weiler, KW VanDyk, SD Sramek, RA Panagia, N AF Weiler, KW VanDyk, SD Sramek, RA Panagia, N BE Taylor, AR Paredes, JM TI What we can learn from SN radio light curves SO RADIO EMISSION FROM THE STARS AND THE SUN SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Conference on Radio Emission from the Stars and the Sun CY JUL 03-07, 1995 CL BARCELONA, SPAIN SP Astron Soc Pacific, Brit Council, Inst Britanic, Comissionat Univ Recerca, CIRIT, Community European Solar Radio Astronomers, Direccion Gen Investigac Cientifica & Tecnica, Embajada Austr Espana, Fundacio Catalana Recerca, Int Sci Fdn, Int Union Radio Sci, Mazel Ingenieros S A, Oce Espana S A, Sociedad Espanola Astron, Univ Barcelona C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 2 Z9 2 U1 0 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-14-7 J9 ASTR SOC P PY 1996 VL 93 BP 141 EP 146 PG 6 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BF32C UT WOS:A1996BF32C00031 ER PT B AU Ray, PS Foster, RS Waltman, EB Ghigo, FD Johnston, KJ AF Ray, PS Foster, RS Waltman, EB Ghigo, FD Johnston, KJ BE Taylor, AR Paredes, JM TI Flux monitoring of LSI +61 degrees 303 at 2.25 and 8.3 GHz SO RADIO EMISSION FROM THE STARS AND THE SUN SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT Conference on Radio Emission from the Stars and the Sun CY JUL 03-07, 1995 CL BARCELONA, SPAIN SP Astron Soc Pacific, Brit Council, Inst Britanic, Comissionat Univ Recerca, CIRIT, Community European Solar Radio Astronomers, Direccion Gen Investigac Cientifica & Tecnica, Embajada Austr Espana, Fundacio Catalana Recerca, Int Sci Fdn, Int Union Radio Sci, Mazel Ingenieros S A, Oce Espana S A, Sociedad Espanola Astron, Univ Barcelona C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-14-7 J9 ASTR SOC P PY 1996 VL 93 BP 249 EP 251 PG 3 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BF32C UT WOS:A1996BF32C00056 ER PT J AU Sletten, MA Wu, J AF Sletten, MA Wu, J TI Ultrawideband, polarimetric radar studies of breaking waves at low grazing angles SO RADIO SCIENCE LA English DT Article ID MICROWAVE BACKSCATTERING; WIND AB This paper summarizes the results of recent laboratory investigations into the ultrawideband, polarimetric scattering properties of breaking water waves. Breaking waves were produced in a wave tank through chirped wave packets (0.5-1.0 Hz) generated by a programmable wavemaker. An ultrawideband radar system was then used to measure the polarimetric properties of the breakers over the 6-12-GHz band at a grazing angle of 10 degrees. An analysis of the data from these experiments shows interesting dynamics in and differences between the dominant VV and HH polarizations. In particular, the RF frequency responses of the orthogonally polarized signals differ substantially, and both the magnitudes as well as the relative phases can change appreciably over relatively short time intervals. A ''bench top'' model of a breaker is used to support the hypothesis that this behavior is due to the presence of small, nonlinear structures near the breaker crest and a ''double-bounce'' scattering mechanism associated with them. C1 UNIV DELAWARE,LEWES,DE 19958. RP Sletten, MA (reprint author), USN,RES LAB,CODE 7255,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 15 TC 19 Z9 19 U1 0 U2 1 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0048-6604 J9 RADIO SCI JI Radio Sci. PD JAN-FEB PY 1996 VL 31 IS 1 BP 181 EP 192 DI 10.1029/95RS01762 PG 12 WC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications SC Astronomy & Astrophysics; Geochemistry & Geophysics; Meteorology & Atmospheric Sciences; Remote Sensing; Telecommunications GA TT013 UT WOS:A1996TT01300013 ER PT B AU Cheng, SF Clark, AE AF Cheng, SF Clark, AE BE Bautista, RG Bounds, CO Ellis, TW Kilbourn, BT TI Rare-earth based giant magnetostrictive materials SO RARE EARTHS: SCIENCE, TECHNOLOGY & APPLICATIONS III LA English DT Proceedings Paper CT 3rd TMS Symposium on Rare Earths - Science, Technology and Applications, at the TMS 1997 Annual Meeting CY FEB 09-13, 1997 CL ORLANDO, FL SP Minerals Met & Mat Soc, Light Met Div, React Met Comm AB Among the many extraordinary features of the rare earths are their magnetic and magnetoelastic properties. The rare earths, e.g. Tb, Dy, Nd, Sm, are known worldwide for their large magnetocrystalline anisotropy and magnetization, which has led to the importance of magnetic rare earths as vital ingredients of modem permanent magnets. In this paper, we focus on the strain dependence of these giant effects which gives rise to huge magnetostrictions, magnetomechanical couplings, and Delta E effects. Magnetostrictions greater than 10(-3) have been measured at temperatures as high as 500 K. At low temperatures magnetostrictions reaches similar to 1%. Delta E effects similar to 10. No other solid state material has matched these values. A proper balance of magnetic anisotropy and magnetostriction, plus a proper choice of crystal axes lead to alloys which can switch large quantities of energy between;he internal (magnetic) and external (mechanical) states with the application of small triggering magnetic fields. In addition to the traditional use of these materials in transduction, they are particularly valuable for smart systems where reliability and robustness are needed such as active structure stiffening and active vibration control. C1 USN, Ctr Surface Warfare, Carderock Div, Silver Spring, MD 20903 USA. RP Cheng, SF (reprint author), USN, Ctr Surface Warfare, Carderock Div, Silver Spring, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-363-5 PY 1996 BP 149 EP 160 PG 12 WC Engineering, Chemical; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Mining & Mineral Processing SC Engineering; Materials Science; Metallurgy & Metallurgical Engineering; Mining & Mineral Processing GA BK38M UT WOS:000071956300013 ER PT B AU Ham, YS Poranski, CF Greenawald, EC AF Ham, YS Poranski, CF Greenawald, EC BE Thompson, DO Chimenti, DE TI A practical algorithm for reconstruction from x-ray backscatter data SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 15A AND 15B SE REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION LA English DT Proceedings Paper CT 22nd Symposium on Quantitative Nondestructive Evaluation CY JUL 30-AUG 04, 1995 CL SEATTLE, WA C1 USN,RES LAB,MAT CHEM BRANCH,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45310-X J9 REV PROG Q PY 1996 VL 15 BP 449 EP 455 PN A&B PG 7 WC Engineering, Mechanical; Materials Science, Characterization & Testing SC Engineering; Materials Science GA BF79A UT WOS:A1996BF79A00057 ER PT B AU Liu, JM AF Liu, JM BE Thompson, DO Chimenti, DE TI Air-gap detection in dielectric materials by a step-frequency microwave technique SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 15A AND 15B SE REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION LA English DT Proceedings Paper CT 22nd Symposium on Quantitative Nondestructive Evaluation CY JUL 30-AUG 04, 1995 CL SEATTLE, WA C1 USN,CTR SURFACE WEAP,CARDEROCK DIV,SILVER SPRING,MD 20903. NR 0 TC 2 Z9 2 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45310-X J9 REV PROG Q PY 1996 VL 15 BP 705 EP 712 PN A&B PG 8 WC Engineering, Mechanical; Materials Science, Characterization & Testing SC Engineering; Materials Science GA BF79A UT WOS:A1996BF79A00092 ER PT B AU Liu, JM Matteson, MA AF Liu, JM Matteson, MA BE Thompson, DO Chimenti, DE TI Effects of lift-off on microwave nde using an open-ended rectangular waveguide SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 15A AND 15B SE REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION LA English DT Proceedings Paper CT 22nd Symposium on Quantitative Nondestructive Evaluation CY JUL 30-AUG 04, 1995 CL SEATTLE, WA C1 USN,CTR SURFACE WARFARE,CADERCOCK DIV,SILVER SPRING,MD 20903. NR 0 TC 1 Z9 1 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45310-X J9 REV PROG Q PY 1996 VL 15 BP 713 EP 718 PN A&B PG 6 WC Engineering, Mechanical; Materials Science, Characterization & Testing SC Engineering; Materials Science GA BF79A UT WOS:A1996BF79A00093 ER PT B AU Brown, LM Lin, JS AF Brown, LM Lin, JS BE Thompson, DO Chimenti, DE TI Introduction of the signature classification development system SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 15A AND 15B SE REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION LA English DT Proceedings Paper CT 22nd Symposium on Quantitative Nondestructive Evaluation CY JUL 30-AUG 04, 1995 CL SEATTLE, WA C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,ANNAPOLIS,MD 21402. NR 0 TC 1 Z9 1 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45310-X J9 REV PROG Q PY 1996 VL 15 BP 821 EP 828 PN A&B PG 8 WC Engineering, Mechanical; Materials Science, Characterization & Testing SC Engineering; Materials Science GA BF79A UT WOS:A1996BF79A00107 ER PT B AU Bashkansky, M Battle, PR Duncan, M Mahon, R Reintjes, J AF Bashkansky, M Battle, PR Duncan, M Mahon, R Reintjes, J BE Thompson, DO Chimenti, DE TI Subsurface defect detection in ceramic materials using optical gating techniques SO REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION, VOLS 15A AND 15B SE REVIEW OF PROGRESS IN QUANTITATIVE NONDESTRUCTIVE EVALUATION LA English DT Proceedings Paper CT 22nd Symposium on Quantitative Nondestructive Evaluation CY JUL 30-AUG 04, 1995 CL SEATTLE, WA C1 USN,RES LAB,LASER PHYS BRANCH,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45310-X J9 REV PROG Q PY 1996 VL 15 BP 1565 EP 1572 PN A&B PG 8 WC Engineering, Mechanical; Materials Science, Characterization & Testing SC Engineering; Materials Science GA BF79A UT WOS:A1996BF79A00205 ER PT J AU Koshy, A Grover, S Hyams, KC Shabrawy, MA Pacsa, A AlNakib, B Zaidi, SA AlAnezi, AAH AlMufti, S Burans, J Carl, M Richards, AL AF Koshy, A Grover, S Hyams, KC Shabrawy, MA Pacsa, A AlNakib, B Zaidi, SA AlAnezi, AAH AlMufti, S Burans, J Carl, M Richards, AL TI Short-term IgM and IgG antibody responses to hepatitis E virus infection SO SCANDINAVIAN JOURNAL OF INFECTIOUS DISEASES LA English DT Article ID LINKED-IMMUNOSORBENT-ASSAY; FUSION PROTEIN; INSECT CELLS; HEV; IDENTIFICATION; EXPRESSION; CHILDREN; EPITOPES; PRIMATES AB 53 adult patients with acute hepatitis caused by hepatitis E virus were identified by the presence of IgM antibody to hepatitis E virus, and followed for 12 months to evaluate the kinetics of anti-HEV antibodies. All but 1 female Kuwaiti patient mere expatriate workers from the Indian subcontinent, temporarily working in Kuwait, Follow-up samples obtained at 1, 3, 6 and 12 months were evalutated for IgM and Ige antibodies to hepatitis E virus. IgM-class antibodies to hepatitis E virus were detectable in 12/27 (44%) patients at 1 month, in 0/26 at 3 months, in 0/8 at 6 months and 0/6 at 12 months. IgG antibodies to hepatitis E virus were detectable in 46/47 (98%) at onset, 26/27 (96%) at 1 month, in 26/29 (90%) at 3 months, 16/16 (100%) at 6 months and 8/8 (100%) at 12 months of follow-up. This study suggests that IgM antibodies to hepatitis E virus decline rapidly after an acute infection but Ige antibodies to hepatitis E virus persists for at least 1 year in many patients. C1 AL AMIRI HOSP,THUNIYAM AL GHANIM GASTROENTEROL CTR,KUWAIT,KUWAIT. USN,MED RES INST,BETHESDA,MD. PUBL HLTH LAB,KUWAIT,KUWAIT. USN,MED RES UNIT 2,JAKARTA,INDONESIA. RP Koshy, A (reprint author), KUWAIT UNIV,FAC MED,POST BOX 24923,SAFAT 13110,KUWAIT. NR 16 TC 19 Z9 19 U1 1 U2 2 PU SCANDINAVIAN UNIVERSITY PRESS PI OSLO PA PO BOX 2959 TOYEN, JOURNAL DIVISION CUSTOMER SERVICE, N-0608 OSLO, NORWAY SN 0036-5548 J9 SCAND J INFECT DIS JI Scand. J. Infect. Dis. PY 1996 VL 28 IS 5 BP 439 EP 441 DI 10.3109/00365549609037935 PG 3 WC Infectious Diseases SC Infectious Diseases GA VU939 UT WOS:A1996VU93900003 PM 8953669 ER PT J AU Agoros, C Lee, CO Hills, SJ Carlino, DJ AF Agoros, C Lee, CO Hills, SJ Carlino, DJ TI US navy UUV navigation SO SEA TECHNOLOGY LA English DT Article C1 DJC ANAL,WAKEFIELD,RI. RP Agoros, C (reprint author), USN,UNDERSEA WARFARE CTR DIV,NEWPORT,RI 02840, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU COMPASS PUBL INC PI ARLINGTON PA SUITE 1000 1117 N 19 ST, ARLINGTON, VA 22209 SN 0093-3651 J9 SEA TECHNOL JI Sea Technol. PD JAN PY 1996 VL 37 IS 1 BP 56 EP 60 PG 5 WC Engineering, Ocean SC Engineering GA TR433 UT WOS:A1996TR43300020 ER PT B AU Wilson, ML AF Wilson, ML GP IEEE, COMP SOC TI A comparative assessment of some reengineering techniques SO SECOND IEEE INTERNATIONAL CONFERENCE ON ENGINEERING OF COMPLEX COMPUTER SYSTEMS: HELD JOINTLY WITH 6TH CSESAW, 4TH IEEE RTAW, AND SES'96 LA English DT Proceedings Paper CT 2nd IEEE International Conference on Engineering of Complex Computer Systems / 6th CSESAW / 4th IEEE RTAW / SES 96 CY OCT 21-25, 1996 CL MONTREAL, CANADA SP IEEE Comp Soc Tech Comm Complex Comp, UFAC COMPUT C1 USN,CTR SURFACE WARFARE,DAHLGREN,VA 22448. 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 0-8186-7614-0 PY 1996 BP 72 EP 75 DI 10.1109/ICECCS.1996.558385 PG 4 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BG62Z UT WOS:A1996BG62Z00011 ER PT B AU Salinas, J Park, N Arunkumar, U Lombardi, F AF Salinas, J Park, N Arunkumar, U Lombardi, F GP IEEE, COMP SOC TI Conformance testing of time-dependent protocols SO SECOND IEEE INTERNATIONAL CONFERENCE ON ENGINEERING OF COMPLEX COMPUTER SYSTEMS: HELD JOINTLY WITH 6TH CSESAW, 4TH IEEE RTAW, AND SES'96 LA English DT Proceedings Paper CT 2nd IEEE International Conference on Engineering of Complex Computer Systems / 6th CSESAW / 4th IEEE RTAW / SES 96 CY OCT 21-25, 1996 CL MONTREAL, CANADA SP IEEE Comp Soc Tech Comm Complex Comp, UFAC COMPUT C1 USN,UNDERSEA WARFARE CTR,NEW LONDON,CT 06320. 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 0-8186-7614-0 PY 1996 BP 257 EP 264 DI 10.1109/ICECCS.1996.558422 PG 8 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BG62Z UT WOS:A1996BG62Z00046 ER PT B AU Scalzo, RC Hugue, MM AF Scalzo, RC Hugue, MM GP IEEE, COMP SOC TI A framework for dependability specification SO SECOND IEEE INTERNATIONAL CONFERENCE ON ENGINEERING OF COMPLEX COMPUTER SYSTEMS: HELD JOINTLY WITH 6TH CSESAW, 4TH IEEE RTAW, AND SES'96 LA English DT Proceedings Paper CT 2nd IEEE International Conference on Engineering of Complex Computer Systems / 6th CSESAW / 4th IEEE RTAW / SES 96 CY OCT 21-25, 1996 CL MONTREAL, CANADA SP IEEE Comp Soc Tech Comm Complex Comp, UFAC COMPUT C1 USN,CTR SURFACE WARFARE,DAHLGREN,VA 22448. 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 0-8186-7614-0 PY 1996 BP 301 EP 304 DI 10.1109/ICECCS.1996.558429 PG 4 WC Computer Science, Hardware & Architecture; Computer Science, Information Systems; Computer Science, Software Engineering SC Computer Science GA BG62Z UT WOS:A1996BG62Z00053 ER PT B AU Kidd, T Hensgen, D Freund, R Moore, L AF Kidd, T Hensgen, D Freund, R Moore, L BE Li, GJ Hsu, DF Horiguchi, S Maggs, B TI SmartNet: A scheduling framework for heterogeneous computing SO SECOND INTERNATIONAL SYMPOSIUM ON PARALLEL ARCHITECTURES, ALGORITHMS, AND NETWORKS (I-SPAN '96), PROCEEDINGS LA English DT Proceedings Paper CT 2nd International Symposium on Parallel Architectures, Algorithms, and Networks (I-SPAN 96) CY JUN 12-14, 1996 CL BEIJING, PEOPLES R CHINA SP Chinese Natl Res Ctr Intelligent Comp Syst, IEEE, Comp Soc, IEEE, Comp Soc, Tech Comm Parallel Proc, Chinese Natl Hi Tech Programme, Steering Comm, Informat Proc Soc Japan, Chinese Comp Federat, IEICE, Informat & Syst Soc C1 USN,POSTGRAD SCH,WASHINGTON,DC 20350. NR 0 TC 6 Z9 6 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 0-8186-7460-1 PY 1996 BP 514 EP 521 DI 10.1109/ISPAN.1996.509034 PG 8 WC Computer Science, Hardware & Architecture; Computer Science, Theory & Methods SC Computer Science GA BF75W UT WOS:A1996BF75W00082 ER PT B AU Berzins, V AF Berzins, V GP KNOWLEDGE SYST INST KNOWLEDGE SYST INST TI Recombining changes to software specifications SO SEKE '96: THE 8TH INTERNATIONAL CONFERENCE ON SOFTWARE ENGINEERING AND KNOWLEDGE ENGINEERING, PROCEEDINGS LA English DT Proceedings Paper CT 8th International Conference on Software Engineering and Knowledge Engineering (SEKE 96) CY JUN 10-12, 1996 CL LAKE TAHOE, NV SP Knowledge Syst Inst, Arizona State Univ, Envision Technol Corp, Paan Amer Ctr Earth & Environm Studies, Univ Pittsburgh, Univ Texas El Paso, ACM, SIGSOFT, IEEE Comp Soc, TC Software ID PROGRAMS AB This paper proposes a model of software changes for supporting the evolution of software prototypes. We decompose software evolution steps into primitive substeps that correspond to monotonic specification changes. This structure is used to rearrange chronological derivation sequences into idealized conceptual derivation structures containing only meaning-preserving (refining) changes. We indicate how this structure can be used to automatically combine different changes to a specification. A set of examples illustrates the ideas. C1 USN, Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. RP Berzins, V (reprint author), USN, Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. NR 26 TC 0 Z9 0 U1 0 U2 0 PU KNOWLEDGE SYSTEMS INSTITUTE PI SKOKIE PA 3420 MAIN ST, SKOKIE, IL 60076 USA BN 0-9641699-3-2 PY 1996 BP 136 EP 144 PG 9 WC Computer Science, Software Engineering SC Computer Science GA BM77G UT WOS:000079726000019 ER PT B AU Luqi AF Luqi GP KNOWLEDGE SYST INST KNOWLEDGE SYST INST TI Specifications in software prototyping SO SEKE '96: THE 8TH INTERNATIONAL CONFERENCE ON SOFTWARE ENGINEERING AND KNOWLEDGE ENGINEERING, PROCEEDINGS LA English DT Proceedings Paper CT 8th International Conference on Software Engineering and Knowledge Engineering (SEKE 96) CY JUN 10-12, 1996 CL LAKE TAHOE, NV SP Knowledge Syst Inst, Arizona State Univ, Envision Technol Corp, Paan Amer Ctr Earth & Environm Studies, Univ Pittsburgh, Univ Texas El Paso, ACM, SIGSOFT, IEEE Comp Soc, TC Software ID PROGRAM AB We explore the use of software specifications for software prototyping. This paper describes a process model for software prototyping, and shows how specifications can be used to support such a process. C1 USN, Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. RP Luqi (reprint author), USN, Postgrad Sch, Dept Comp Sci, Monterey, CA 93943 USA. NR 20 TC 0 Z9 0 U1 0 U2 0 PU KNOWLEDGE SYSTEMS INSTITUTE PI SKOKIE PA 3420 MAIN ST, SKOKIE, IL 60076 USA BN 0-9641699-3-2 PY 1996 BP 189 EP 197 PG 9 WC Computer Science, Software Engineering SC Computer Science GA BM77G UT WOS:000079726000025 ER PT B AU Hamann, WF Glick, HA AF Hamann, WF Glick, HA BE Wang, A TI Integrated diagnostics for navy fiber optic systems SO SELF-CALIBRATED INTELLIGENT OPTICAL SENSORS AND SYSTEMS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Self-Calibrated Intelligent Optical Sensors and Systems CY OCT 25-26, 1995 CL PHILADELPHIA, PA SP Soc Photo Opt Instrumentat Engineers DE fiber optics; temperature sensors; fiber optic communications; integrated diagnostics; navy; biosensors; control systems; built-in-test; built-in-calibration; polarization C1 USN,WARFARE ASSESSMENT DIV,CORONA,CA 91718. 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 0-8194-1958-3 J9 P SOC PHOTO-OPT INS PY 1996 VL 2594 BP 2 EP 19 DI 10.1117/12.229218 PG 18 WC Instruments & Instrumentation; Optics SC Instruments & Instrumentation; Optics GA BF02U UT WOS:A1996BF02U00001 ER PT B AU Borsuk, GM AF Borsuk, GM BE Lal, K TI Recent progress in GaN devices SO SEMICONDUCTOR DEVICES SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 8th International Workshop on Physics of Semiconductor Devices CY DEC 11-16, 1995 CL NEW DELHI, INDIA SP Indian Natl Sci Acad, New Delhi, All India Council Tech Educ, New Delhi, Dept Sci & Technol, New Delhi, New Delhi & Dept Electr, New Delhi, Soc Photo Opt Instrumentat Engineers C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU NAROSA PUBLISHING HOUSE PI NEW DELHI PA 6 COMMUNITY CENTRE, PANCHSHEEL PARK, NEW DELHI 110 017, INDIA BN 0-8194-2114-6 J9 P SOC PHOTO-OPT INS PY 1996 VL 2733 BP 154 EP 161 PG 8 WC Materials Science, Characterization & Testing; Optics; Physics, Condensed Matter SC Materials Science; Optics; Physics GA BF78E UT WOS:A1996BF78E00038 ER PT J AU Xu, Q Gu, W AF Xu, Q Gu, W GP AMER METEOROL SOC TI Evolution of fronts and nonlinear equilibration of Eady waves in a viscous semigeostrophic model SO SEVENTH CONFERENCE ON MESOSCALE PROCESSES LA English DT Proceedings Paper CT 7th Conference on Mesoscale Processes CY SEP 09-13, 1996 CL UNIV READING, READING, ENGLAND SP Amer Meteorol Soc, Royal Meteorol Soc, UK HO UNIV READING RP Xu, Q (reprint author), USN,RES LAB,MONTEREY,CA 93943, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108 PY 1996 BP 23 EP 24 PG 2 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BH25H UT WOS:A1996BH25H00009 ER PT J AU Gu, W Xu, Q Wu, RS AF Gu, W Xu, Q Wu, RS GP AMER METEOROL SOC TI Nonlinear viscous symmetric circulations and their stability in three dimensions SO SEVENTH CONFERENCE ON MESOSCALE PROCESSES LA English DT Proceedings Paper CT 7th Conference on Mesoscale Processes CY SEP 09-13, 1996 CL UNIV READING, READING, ENGLAND SP Amer Meteorol Soc, Royal Meteorol Soc, UK HO UNIV READING C1 USN,RES LAB,MONTEREY,CA 93943. RP Xu, Q (reprint author), USN,RES LAB,MONTEREY,CA 93943, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108 PY 1996 BP 93 EP 94 PG 2 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BH25H UT WOS:A1996BH25H00035 ER PT J AU Thompson, WT Haack, T Doyle, JD AF Thompson, WT Haack, T Doyle, JD GP AMER METEOROL SOC TI An investigation of a trapped coastal wind reversal SO SEVENTH CONFERENCE ON MESOSCALE PROCESSES LA English DT Proceedings Paper CT 7th Conference on Mesoscale Processes CY SEP 09-13, 1996 CL UNIV READING, READING, ENGLAND SP Amer Meteorol Soc, Royal Meteorol Soc, UK HO UNIV READING RP Thompson, WT (reprint author), USN,RES LAB,MARINE METEOROL DIV,7 GRACE HOPPER AVE,MONTEREY,CA 93943, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108 PY 1996 BP 257 EP 259 PG 3 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BH25H UT WOS:A1996BH25H00095 ER PT J AU Doyle, JD Shapiro, MA AF Doyle, JD Shapiro, MA GP AMER METEOROL SOC TI Mesoscale characteristics of a topographically modulated frontal zone over Norway SO SEVENTH CONFERENCE ON MESOSCALE PROCESSES LA English DT Proceedings Paper CT 7th Conference on Mesoscale Processes CY SEP 09-13, 1996 CL UNIV READING, READING, ENGLAND SP Amer Meteorol Soc, Royal Meteorol Soc, UK HO UNIV READING RP Doyle, JD (reprint author), USN,RES LAB,MONTEREY,CA 93943, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108 PY 1996 BP 319 EP 321 PG 3 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BH25H UT WOS:A1996BH25H00117 ER PT B AU Langland, RH Rohaly, GD AF Langland, RH Rohaly, GD GP AMER METEOROL SOC TI Adjoint-based targeting of observations for FASTEX cyclones SO SEVENTH CONFERENCE ON MESOSCALE PROCESSES LA English DT Proceedings Paper CT 7th Conference on Mesoscale Processes CY SEP 09-13, 1996 CL UNIV READING, READING, ENGLAND SP Amer Meteorol Soc, Royal Meteorol Soc, UK HO UNIV READING RP Langland, RH (reprint author), USN,RES LAB,MONTEREY,CA 93940, USA. NR 0 TC 21 Z9 21 U1 0 U2 0 PU AMER METEOROLOGICAL SOC PI BOSTON PA 45 BEACON ST, BOSTON, MA 02108 PY 1996 BP 369 EP 371 PG 3 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA BH25H UT WOS:A1996BH25H00134 ER PT B AU Schneidewind, NF AF Schneidewind, NF GP IEEE, COMP SOC TI Software reliability engineering for client-server systems SO SEVENTH INTERNATIONAL SYMPOSIUM ON SOFTWARE RELIABILITY ENGINEERING, PROCEEDINGS LA English DT Proceedings Paper CT 7th International Symposium on Software Reliability Engineering CY OCT 30-NOV 02, 1996 CL WHITE PLAINS, NY SP IEEE Comp Soc, IEEE Comp Soc Tech Council Software Engn Comm Software Reliabil Engn, IEEE Reliab Soc, IFIP, Working Grp Dependabil C1 USN,POSTGRAD SCH,MONTEREY,CA 93943. 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 0-8186-7707-4 PY 1996 BP 226 EP 235 PG 10 WC Computer Science, Software Engineering SC Computer Science GA BG62N UT WOS:A1996BG62N00025 ER PT S AU Rudolph, AS Kwasiborski, V Speilberg, H AF Rudolph, AS Kwasiborski, V Speilberg, H BE Okada, K Ogata, H TI Tissue cytokine accumulation following administration of liposome-encapsulated hemoglobin in mice SO SHOCK: FROM MOLECULAR AND CELLULAR LEVEL TO WHOLE BODY SE INTERNATIONAL CONGRESS SERIES LA English DT Proceedings Paper CT 3rd International Shock Congress on Shock - From Molecular and Cellular Level to Whole Body (Shock 95) CY OCT 21-23, 1995 CL HAMAMATSU, JAPAN DE blood substitute; interleukins; liver; mononuclear phagocyte system AB Background: Liposome-encapsulated hemoglobin (LEH) is an experimental red cell substitute which is being developed as an artificial oxygen-carrying resuscitative fluid. This particulate hemoglobin carrier has been shown to accumulate in organs of the reticuloendothelial system, particularly the liver and spleen. Previous investigations have demonstrated that injection of LEH in mice does not illicit serum TNF-alpha but can inhibit LPS-stimulated TNF-alpha production in naive cultured alveolar macrophages. Materials and Methods: We have measured the kinetics of tissue-specific accumulation of inflammatory (TNF-alpha, IL-1 beta) and regulatory cytokines (1L-4, n-10) over the course of 24 h after an injection of 10% blood volume in the tail vein of mice by ELISA. Serum, liver, and spleen were collected from sacrificed animals at 1, 2, 4, 8, and 24 h after LEH injection. Results: Tissue-associated cytokines were observed in the absence of significant changes in serum levels. Liver-associated IL-1 beta was observed to increase significantly over sham or vehicle injected animals at 1 h (413 +/- 57 pg/ml, p < 0.05) and 2 h (455 +/- 40 pg/ml, p < 0.05) following LEH administration and decreased below baseline at 4 h. Liver-associated n-10 was significantly increased over sham animals at all time points following LEH injection and increased to maximal levels at 4 h (1,382+/-256 pg/ml, p<0.05). IL-10 was also observed in spleen and serum at significantly increased levels over sham animals. Conclusion: These results indicate that LEH elicits local inflammatory cytokine production in organs of the reticuloendothelial system which may be a consequence of accumulation in tissue-resident phagocytes. RP Rudolph, AS (reprint author), USN,RES LAB,CTR BIOMOL SCI & ENGN,CODE 6910,WASHINGTON,DC 20375, 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 0531-5131 BN 0-444-82285-2 J9 INT CONGR SER PY 1996 VL 1102 BP 315 EP 321 PG 7 WC Biochemistry & Molecular Biology; Emergency Medicine; Medicine, General & Internal SC Biochemistry & Molecular Biology; Emergency Medicine; General & Internal Medicine GA BG83D UT WOS:A1996BG83D00035 ER PT J AU Huang, H Mair, HU AF Huang, H Mair, HU TI Neoclassical solution of transient interaction of plane acoustic waves with a spherical elastic shell SO SHOCK AND VIBRATION LA English DT Article AB A detailed solution to the transient interaction of plane acoustic waves with a spherical elastic shell was obtained more than a quarter of a century ago based on the classical separation of variables, series expansion, and Laplace transform techniques. An eight-term summation of the time history series was sufficient for the convergence of the shell deflection and strain, and to a lesser degree, the shell velocity, Since then, the results have been used routinely for validation of solution techniques and computer methods for the evaluation of underwater explosion response of submerged structures. By utilizing modern algorithms and exploiting recent advances of computer capacities and floating point mathematics, sufficient terms of the inverse Laplace transform series solution can now be accurately computed. Together with the application of the Cesaro summation rising lip to 70 terms of the series, two primary deficiencies of the previous solution are now remedied: meaningful time histories of higher time derivative data such as acceleration and pressure are now generated using a sufficient number of terms in the series; and uniform convergence around the discontinuous step wave front is now obtained, completely eradicating spurious oscillations due to the Gibbs' phenomenon. New results of time histories of response items of interest are presented. (C) 1996 John Wiley & Sons, Inc. RP Huang, H (reprint author), USN,CTR SURFACE WARFARE,INDIAN HEAD DIV,EXPLOS DAMAGE DIV,CODE 460,SILVER SPRING,MD 20903, USA. RI Mair, Hans/E-9261-2011 OI Mair, Hans/0000-0003-4873-6853 NR 23 TC 11 Z9 12 U1 0 U2 3 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1070-9622 J9 SHOCK VIB JI Shock Vib. PY 1996 VL 3 IS 2 BP 85 EP 98 PG 14 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA TX602 UT WOS:A1996TX60200002 ER PT J AU Remmers, GM OHara, GJ Cunniff, PF AF Remmers, GM OHara, GJ Cunniff, PF TI Dynamic design analysis method DDAM SO SHOCK AND VIBRATION LA English DT Review ID SHOCK AB This article describes the evolution of the dynamic design analysis method (DDAM) by assimilating information from references spanning mole than three decades. This evolution began with attempts to use earthquake engineering practice, circa 1950, in dealing with hostile environments created by modern weaponry. It became necessary to develop new theories that went beyond the then current status. This led to research programs that went back to basic physics and engineering principles that resulted in a sound technique for naval applications. The elements of the technique were theoretically based and confirmed by laboratory and large scale field testing. One important example is the structural interaction effects between a vehicle and large equipment structures by means of a newly defined quantity called modal effective mass. Another example led to the discovery that attaching a vibration generator to a structure in an effort to find the frequencies useful for foundation motion response analysis was guaranteed to produce failure. DDAM continues to be used after its introduction 36 years ago. Although familiar in US and international naval circles, it is nor well known by persons other than naval engineers. Many myths and misconceptions have grown during this period, so some of the major ones are addressed. (C) 1996 John Wiley & Sons, Inc. RP Remmers, GM (reprint author), OFF NAVAL RES, SHIP STRUCT & SYST SCI & TECHNOL DIV, ARLINGTON, VA 22217 USA. NR 36 TC 0 Z9 0 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 1070-9622 J9 SHOCK VIB JI Shock Vib. PY 1996 VL 3 IS 6 BP 461 EP 476 PG 16 WC Acoustics; Engineering, Mechanical; Mechanics SC Acoustics; Engineering; Mechanics GA VR737 UT WOS:A1996VR73700006 ER PT S AU Bernecker, RR AF Bernecker, RR BE Schmidt, SC Tao, WC TI Hugoniots of some elastomeric binder systems SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 137 EP 140 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00031 ER PT S AU Bernecker, RR AF Bernecker, RR BE Schmidt, SC Tao, WC TI Observations on the Hugoniot for HMX SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 141 EP 144 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00032 ER PT S AU Zerilli, FJ Jones, HD AF Zerilli, FJ Jones, HD BE Schmidt, SC Tao, WC TI Surface energy and the size of diamond crystals SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, ENERGET MAT RES & TECHNOL DEPT, SILVER SPRING, MD 20903 USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 163 EP 166 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00037 ER PT S AU Elert, ML Robertson, DH Barrett, JJC White, CT AF Elert, ML Robertson, DH Barrett, JJC White, CT BE Schmidt, SC Tao, WC TI Molecular dynamics study of reaction zone properties in chemically sustained shock waves SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN ACAD, DEPT CHEM, ANNAPOLIS, MD 21402 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 183 EP 186 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00042 ER PT S AU White, CT Barrett, JJC Mintmire, JW Elert, ML Robertson, DH AF White, CT Barrett, JJC Mintmire, JW Elert, ML Robertson, DH BE Schmidt, SC Tao, WC TI Molecular dynamics study of chemistry from strong shock waves interacting with voids SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, RES LAB, THEORET CHEM SECT, WASHINGTON, DC 20375 USA. NR 0 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 187 EP 190 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00043 ER PT S AU Barrett, JJC Brenner, DW Robertson, DH White, CT AF Barrett, JJC Brenner, DW Robertson, DH White, CT BE Schmidt, SC Tao, WC TI Detonation of solid O-3: Effects of void collapse SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, RES LAB, THEORET CHEM SECT, WASHINGTON, DC 20375 USA. RI Brenner, Donald/D-1741-2009 NR 0 TC 2 Z9 2 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 191 EP 194 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00044 ER PT S AU Zerilli, FJ Armstrong, RW AF Zerilli, FJ Armstrong, RW BE Schmidt, SC Tao, WC TI Constitutive relations for titanium and Tl-6Al-4V SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, ENERGET MAT RES & TECHNOL DEPT, SILVER SPRING, MD 20903 USA. NR 0 TC 6 Z9 6 U1 0 U2 2 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 315 EP 318 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00073 ER PT S AU Garrett, RK Rajendram, AM Last, HR AF Garrett, RK Rajendram, AM Last, HR BE Schmidt, SC Tao, WC TI Modelling spall in HY100, HY130, and AF1410 steels SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, WHITE OAK, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 323 EP 326 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00075 ER PT S AU Guirguis, RH AF Guirguis, RH BE Schmidt, SC Tao, WC TI 1-D detonability SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 377 EP 380 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00088 ER PT S AU Guirguis, RH AF Guirguis, RH BE Schmidt, SC Tao, WC TI Energy release in non-ideal explosives SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 381 EP 384 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00089 ER PT S AU Miller, PJ Sutherland, GT AF Miller, PJ Sutherland, GT BE Schmidt, SC Tao, WC TI Reaction rate modeling of PBXN-110 SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR WEAP, CTR AIR WARFARE, CHINA LAKE, CA 93555 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 413 EP 416 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00097 ER PT S AU Phillips, L AF Phillips, L BE Schmidt, SC Tao, WC TI Shock compression of a 2D model of DT embedded in a plastic foam SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, RES LAB, WASHINGTON, DC 20375 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 459 EP 462 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00108 ER PT S AU Holt, WH Mock, W Anderson, MU Holman, GT Graham, RA AF Holt, WH Mock, W Anderson, MU Holman, GT Graham, RA BE Schmidt, SC Tao, WC TI Effect of particle morphology on input and propagated stress wave profiles for two highly-porous polytetrafluoroethylene powders SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, DAHLGREN DIV, DAHLGREN, VA 22448 USA. NR 0 TC 3 Z9 3 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 573 EP 576 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00135 ER PT S AU Tasker, DG Dick, RD Wilson, WH Lee, RJ Gustavson, PK AF Tasker, DG Dick, RD Wilson, WH Lee, RJ Gustavson, PK BE Schmidt, SC Tao, WC TI Response of wet, saturated, and dry riverbed sands to high strain rate loading SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 585 EP 588 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00138 ER PT S AU Last, HR Garrett, RK Rajendran, AM AF Last, HR Garrett, RK Rajendran, AM BE Schmidt, SC Tao, WC TI Comparative study of high strain rate behavior of three martensitic steels SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 631 EP 634 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00149 ER PT S AU Woody, DL Davis, JJ Deiter, JS AF Woody, DL Davis, JJ Deiter, JS BE Schmidt, SC Tao, WC TI Plastic flow generated solid state metal/metal reactions SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, WHITE OAK, MD 20903 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 717 EP 720 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00170 ER PT S AU Atwood, AI Curran, PO Price, CF WIknich, J AF Atwood, AI Curran, PO Price, CF WIknich, J BE Schmidt, SC Tao, WC TI Quasi-static compaction studies of a porous pyrotechnic powder SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, AIR WARFARE CTR, CHINA LAKE, CA 93555 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 745 EP 748 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00177 ER PT S AU Lindfors, AJ Finnegan, SA Boteler, JM AF Lindfors, AJ Finnegan, SA Boteler, JM BE Schmidt, SC Tao, WC TI A study of shock-induced reactivity in a porous pyrotechnic powder mixture SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, AIR WARFARE CTR, RES & TECHNOL DIV, CHINA LAKE, CA 93555 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 749 EP 752 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00178 ER PT S AU Sutherland, GT Ashwell, KD OConnor, JH Baker, RN Lemar, ER AF Sutherland, GT Ashwell, KD OConnor, JH Baker, RN Lemar, ER BE Schmidt, SC Tao, WC TI Shock response of several plastic bonded explosives SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, WHITE OAK DETACHMENT, SILVER SPRING, MD 20903 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 763 EP 766 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00181 ER PT S AU Forbes, JW Lemar, ER AF Forbes, JW Lemar, ER BE Schmidt, SC Tao, WC TI Detonation wave velocity and curvature of brass encased PBXN-111 SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 787 EP 790 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00187 ER PT S AU Lemar, ER Forbes, JW Sutherland, GT AF Lemar, ER Forbes, JW Sutherland, GT BE Schmidt, SC Tao, WC TI Detonation wave velocity and curvature of IRX-4 and PBXN-110 SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 791 EP 794 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00188 ER PT S AU Wilson, WH Forbes, JW Gustavson, PK Lemar, ER Sutherland, GT AF Wilson, WH Forbes, JW Gustavson, PK Lemar, ER Sutherland, GT BE Schmidt, SC Tao, WC TI Detonation properties of the non-ideal explosive PBXW-123 SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 795 EP 798 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00189 ER PT S AU Andrews, S Glancy, B Forbes, J Collignon, S Hudson, L AF Andrews, S Glancy, B Forbes, J Collignon, S Hudson, L BE Schmidt, SC Tao, WC TI Experiments on the modification of the energy release rate in a non-ideal explosive SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 799 EP 802 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00190 ER PT S AU Coffey, CS AF Coffey, CS BE Schmidt, SC Tao, WC TI Energy dissipation and the initiation of explosives during plastic flow SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, WHITE OAK LAB, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 807 EP 810 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00192 ER PT S AU Sharma, J Coffey, CS AF Sharma, J Coffey, CS BE Schmidt, SC Tao, WC TI Nature of ignition sites and hot spots, studied by using an atomic force microscope SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, CARDEROCK DIV, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 811 EP 814 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00193 ER PT S AU Sandusky, HW Bernecker, RR AF Sandusky, HW Bernecker, RR BE Schmidt, SC Tao, WC TI Shock reactivity experiments on a porous composite propellant SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 835 EP 838 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00199 ER PT S AU Sandusky, HW Bernecker, RR AF Sandusky, HW Bernecker, RR BE Schmidt, SC Tao, WC TI Gun-launched impact initiation of the composite explosive PBXN-103 SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 859 EP 862 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00205 ER PT S AU Brown, CA Russell, TP AF Brown, CA Russell, TP BE Schmidt, SC Tao, WC TI Time resolved emission studies of aluminum/water combustion SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, RES LAB, DIV CHEM, WASHINGTON, DC 20375 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 909 EP 912 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00217 ER PT S AU Lee, RJ Forbes, JW AF Lee, RJ Forbes, JW BE Schmidt, SC Tao, WC TI PVDF transducer response from an electrical discharge, in an aluminized solid SO SHOCK COMPRESSION OF CONDENSED MATTER - 1995 SE AIP Conference Proceedings LA English DT Proceedings Paper CT 9th American-Physical-Society Topical Conference on Shock Compression of Condensed Matter CY AUG 13-18, 1995 CL SEATTLE, WA SP Amer Phys Soc C1 USN, CTR SURFACE WARFARE, INDIAN HEAD DIV, SILVER SPRING, MD 20903 USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMER INST PHYSICS PI MELVILLE PA 2 HUNTINGTON QUADRANGLE, STE 1NO1, MELVILLE, NY 11747-4501 USA SN 0094-243X BN 1-56396-566-6 J9 AIP CONF PROC PY 1996 VL 370 BP 1089 EP 1092 PN 1&2 PG 4 WC Acoustics; Physics, Applied; Physics, Condensed Matter SC Acoustics; Physics GA BF97Y UT WOS:A1996BF97Y00261 ER PT J AU Henson, VE Limber, MA McCormick, SF Robinson, BT AF Henson, VE Limber, MA McCormick, SF Robinson, BT TI Multilevel image reconstruction with natural pixels SO SIAM JOURNAL ON SCIENTIFIC COMPUTING LA English DT Article; Proceedings Paper CT Colorado Conference on Iterative Methods CY APR 05-09, 1994 CL BRECKENRIDGE, CO DE tomography; Radon transform; multigrid ID LINEAR EQUATIONS AB The sampled Radon transform of a two-dimensional (2D) function can be represented as a continuous linear map A : L(2)(Omega) --> R(N), where (Au)(j) = (u, psi(j)) and psi(j) is the characteristic function of a strip through Omega approximating the set of line integrals in the sample. The image reconstruction problem is: given a vector b is an element of R(N), find an image (or density function) u(x, y) such that Au = b. In general there are infinitely many solutions; we seek the solution with minimal 2-norm, which leads to a matrix equation Bw = b, where B is a square dense matrix with several convenient properties. We analyze the use of Gauss-Seidel iteration applied to the problem, observing that while the iteration formally converges, there exists a near null space into which the error vectors migrate, after which the iteration stalls. The null space and near null space of B are characterized in order to develop a multilevel scheme. Based on the principles of the multilevel projection method (PML), this scheme leads to somewhat improved performance. Its primary utility, however, is that it facilitates the development of a PML-based method for spotlight tomography, that is, local grid refinement over a portion of the image in which features of interest can be resolved at finer scale than is possible globally. C1 AUTOTROL TECHNOL CORP, DENVER, CO 80231 USA. UNIV COLORADO, PROGRAM APPL MATH, BOULDER, CO 80309 USA. ACCURATE INFORMAT SYST, EATONTOWN, NJ 07724 USA. RP Henson, VE (reprint author), USN, POSTGRAD SCH, DEPT MATH, MONTEREY, CA 93943 USA. NR 28 TC 7 Z9 7 U1 0 U2 1 PU SIAM PUBLICATIONS PI PHILADELPHIA PA 3600 UNIV CITY SCIENCE CENTER PH#382-9800, PHILADELPHIA, PA 19104-2688 SN 1064-8275 J9 SIAM J SCI COMPUT JI SIAM J. Sci. Comput. PD JAN PY 1996 VL 17 IS 1 BP 193 EP 216 DI 10.1137/0917014 PG 24 WC Mathematics, Applied SC Mathematics GA TV423 UT WOS:A1996TV42300014 ER PT B AU Hewer, G Kuo, W Peterson, L AF Hewer, G Kuo, W Peterson, L BE Drummond, OE TI Multiresolution detection of small objects using bootstrap methods and wavelets SO SIGNAL AND DATA PROCESSING OF SMALL TARGETS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Signal and Data Processing of Small Targets 1996 CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE Daubechies wavelet; bootstrap; constant false alarm rate (CFAR) C1 USN,WARFARE CTR WEAP DIV,CHINA LAKE,CA 93555. 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 0-8194-2140-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2759 BP 2 EP 13 DI 10.1117/12.241159 PG 12 WC Optics SC Optics GA BF87H UT WOS:A1996BF87H00001 ER PT B AU Beaven, SG Yu, X Hoff, LE Chen, AM Winter, EM AF Beaven, SG Yu, X Hoff, LE Chen, AM Winter, EM BE Drummond, OE TI Analysis of hyperspectral infrared and low frequency SAR data for target classification SO SIGNAL AND DATA PROCESSING OF SMALL TARGETS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Signal and Data Processing of Small Targets 1996 CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE classification; hyperspectral imagery; synthetic aperture radar; sensor fusion C1 USN COMMAND,CONTROL & OCEAN SURVEILLANCE CTR,SAN DIEGO,CA. 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 0-8194-2140-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2759 BP 121 EP 130 DI 10.1117/12.241162 PG 10 WC Optics SC Optics GA BF87H UT WOS:A1996BF87H00011 ER PT B AU Watson, GA AF Watson, GA BE Drummond, OE TI IMAM algorithm for tracking maneuvering targets in clutter SO SIGNAL AND DATA PROCESSING OF SMALL TARGETS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Signal and Data Processing of Small Targets 1996 CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE tracking; clutter; PDAF; IPDAF; IMM and IMBM algorithms C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,SYST RES & TECHNOL DEPT,DAHLGREN,VA 22448. 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 0-8194-2140-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2759 BP 304 EP 315 DI 10.1117/12.241193 PG 12 WC Optics SC Optics GA BF87H UT WOS:A1996BF87H00028 ER PT B AU Chen, RC Blair, WD AF Chen, RC Blair, WD BE Drummond, OE TI Optimal measurement scheduling for track accuracy control for cued target acquisition SO SIGNAL AND DATA PROCESSING OF SMALL TARGETS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Signal and Data Processing of Small Targets 1996 CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE optimal measurement scheduling; sensor resource allocation; target tracking C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,SYST RES & TECHNOL DEPT,DAHLGREN,VA 22448. 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 0-8194-2140-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2759 BP 406 EP 417 DI 10.1117/12.241202 PG 12 WC Optics SC Optics GA BF87H UT WOS:A1996BF87H00036 ER PT B AU Blair, WD BrandtPearce, M AF Blair, WD BrandtPearce, M BE Drummond, OE TI Tracking multiple unresolved Rayleigh targets with a monopulse radar SO SIGNAL AND DATA PROCESSING OF SMALL TARGETS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Signal and Data Processing of Small Targets 1996 CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE target tracking; radar signal processing; detection; monopulse processing C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,SYST RES & TECHNOL DEPT,DAHLGREN,VA 22448. 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 0-8194-2140-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2759 BP 465 EP 476 DI 10.1117/12.241207 PG 12 WC Optics SC Optics GA BF87H UT WOS:A1996BF87H00041 ER PT B AU Pawlak, RJ AF Pawlak, RJ BE Kadar, I Libby, V TI A simple sub-optimal solution to the sensor-optimized, fusion-optimized Neyman-Pearson constrained decision fusion problem SO SIGNAL PROCESSING, SENSOR FUSION, AND TARGET RECOGNITION V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Signal Processing, Sensor Fusion, and Target Recognition V Conference CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE distributed detection; optimization; threshold; Neyman-Pearson; minimum probability of error; binary hypothesis testing; decision fusion; detection fusion C1 USN,CTR SURFACE WARFARE,SENSORS INTEGRAT BRANCH,DAHLGREN,VA 22448. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2136-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2755 BP 218 EP 225 DI 10.1117/12.243163 PG 8 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF93H UT WOS:A1996BF93H00019 ER PT B AU Uhlmann, JK AF Uhlmann, JK BE Kadar, I Libby, V TI General data fusion for estimates with unknown cross covariances SO SIGNAL PROCESSING, SENSOR FUSION, AND TARGET RECOGNITION V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Signal Processing, Sensor Fusion, and Target Recognition V Conference CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE data fusion; decentralized networks; filtering; Kalman filter; map building; matrix inequalities; nonlinear filtering C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 9 Z9 9 U1 0 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2136-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2755 BP 536 EP 547 DI 10.1117/12.243195 PG 12 WC Engineering, Electrical & Electronic; Optics SC Engineering; Optics GA BF93H UT WOS:A1996BF93H00051 ER PT S AU Thompson, PE Weeks, M Tedrow, P Hobart, K AF Thompson, PE Weeks, M Tedrow, P Hobart, K BE Tung, RT Maex, K Pellegrini, PW Allen, LH TI MBE growth considerations for the fabrication of 640x480 IR focal plane arrays of SiGe HIP detectors SO SILICIDE THIN FILMS - FABRICATION, PROPERTIES, AND APPLICATIONS SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Silicide Thin Films - Fabrication, Properties, and Applications, at the 1995 MRS Fall Meeting CY NOV 27-30, 1995 CL BOSTON, MA SP Mat Res Soc C1 USN,RES LAB,WASHINGTON,DC 20375. 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 1-55899-305-3 J9 MATER RES SOC SYMP P PY 1996 VL 402 BP 431 EP 436 PG 6 WC Materials Science, Coatings & Films SC Materials Science GA BF20H UT WOS:A1996BF20H00061 ER PT S AU deOliveira, AC Freitas, JA Moore, WJ AF deOliveira, AC Freitas, JA Moore, WJ BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Photoacoustic studies of SiC polytypes SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN ID SOLIDS AB Room temperature photoacoustic experiments have been carried out on silicon carbide polytypes. The photoacoustic and optical transmission spectra of each polytype are similar. Studies of the photoacoustic signal with light pulse rate show that all the polytypes are thermally thick and optically thin. The combination of characteristics exhibited by these materials complicates modeling with the available photoacoustic theories. C1 SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. USN,RES LAB,WASHINGTON,DC 20375. RP deOliveira, AC (reprint author), UNIV BRASILIA,DEPT PHYS,BR-70910 BRASILIA,DF,BRAZIL. NR 8 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 341 EP 344 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00082 ER PT S AU LinChung, PJ AF LinChung, PJ BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Local vibrational modes associated with impurity-complexes in cubic SiC SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN AB A theoretical study of local vibrational modes induced by impuritiy-complexes is presented. Complexes involving nitrogen, Si, and vacancy defects are considered. The Keating Hamiltonian is used for the quadratic potential energy of the system, and the supercell approach is employed to treat the impurity complex. The calculated gap modes and high frequency local modes for different complexes are compared and analyzed to give possible identification of the defects in cubic SiC. RP LinChung, PJ (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 5 TC 0 Z9 0 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 465 EP 468 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00113 ER PT S AU Rao, MV Gardner, J Holland, OW Kelner, G Ghezzo, M Simons, DS Chi, PH AF Rao, MV Gardner, J Holland, OW Kelner, G Ghezzo, M Simons, DS Chi, PH BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Al and N ion implantations in 6H-SiC SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN AB Our results on elevated temperature Al- and N- implantation in 6H-SiC are reported. The range statistics of the ions at various energies, the thermal stability of the implant, the lattice perfection of the annealed material, the electrical activation of the implant, and the p-n junction characteristics are studied. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. USN,RES LAB,WASHINGTON,DC 20375. GE CO,CORP RES & DEV,SCHENECTADY,NY 12301. NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. RP Rao, MV (reprint author), GEORGE MASON UNIV,DEPT ELECT & COMP ENGN,FAIRFAX,VA 22030, USA. NR 6 TC 3 Z9 3 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 521 EP 524 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00127 ER PT S AU Freitas, JA Gardner, J Rao, MV AF Freitas, JA Gardner, J Rao, MV BE Nakashima, S Matsunami, H Yoshida, S Harima, H TI Activation of donor and acceptor implants in 6H-SiC: A photoluminescence study SO SILICON CARBIDE AND RELATED MATERIALS 1995 SE INSTITUTE OF PHYSICS CONFERENCE SERIES LA English DT Article; Proceedings Paper CT International Conference on Silicon Carbide and Related Materials 1995 (ICSCRM-95) CY SEP 18-21, 1995 CL KYOTO, JAPAN ID TEMPERATURE AB Low temperature photoluminescence experiments were performed on aluminum-acceptor and nitrogen-donor implanted 6H-SiC samples. Samples implanted at an elevated temperature and annealed at a high temperature have shown good lattice damage recovery. Photoluminescence spectra of aluminum-implanted samples show emission bands attributed to the activation of the Al-implants. C1 USN,RES LAB,WASHINGTON,DC 20375. GEORGE MASON UNIV,DEPT ELECT & COMP ENGN,FAIRFAX,VA 22030. RP Freitas, JA (reprint author), SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785, USA. NR 12 TC 4 Z9 4 U1 0 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0951-3248 BN 0-7503-0335-2 J9 INST PHYS CONF SER PY 1996 VL 142 BP 529 EP 532 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA BF72L UT WOS:A1996BF72L00129 ER PT B AU Fedorak, R AF Fedorak, R BE Brown, WD TI Trends and challenges SO SIXTH BIENNIAL IEEE INTERNATIONAL NONVOLATILE MEMORY TECHNOLOGY CONFERENCE LA English DT Proceedings Paper CT 6th Biennial IEEE International Nonvolatile Memory Technology Conference CY JUN 24-26, 1996 CL ALBUQUERQUE, NM SP IEEE, Components Packaging & Mfg Technol Soc, IEEE, Comp Soc, IEEE, Magnet Soc, IEEE, Solid State Circuits Council C1 USN,AIR WARFARE CTR,DIV AIRCRAFT,WARMINSTER,PA 18974. 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 0-7803-3510-4 PY 1996 BP 8 EP 11 PG 4 WC Engineering, Electrical & Electronic SC Engineering GA BF95P UT WOS:A1996BF95P00003 ER PT B AU Glass, EJ Reid, LJ AF Glass, EJ Reid, LJ BE Padgett, ML Lindblad, T TI A real time learning neural network for real world applications SO SIXTH, SEVENTH, AND EIGHTH WORKSHOPS ON VIRTUAL INTELLIGENCE: ACADEMIC/INDUSTRIAL/NASA/DEFENSE TECHNICAL INTERCHANGE AND TUTORIALS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 6th/7th/8th Workshops on Virtual Intelligence, at the International Conference on Virtual Intelligence, Neural Networks, Fuzzy Systems, Evolutionary Computing and Virtual Reality 1996 CY 1996 CL ELECTR NETWORK SP Soc Comp Simulat Int, NASA, Soc Photo Opt Instrumentat Engineers, Int Neural Networks Soc, IEEE, Neural Networks Council C1 USN,CTR SURFACE WARFARE,DAHLGREN,VA 22448. 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 0-8194-2276-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2878 BP 21 EP 29 PG 9 WC Computer Science, Artificial Intelligence SC Computer Science GA BG44Q UT WOS:A1996BG44Q00003 ER PT B AU Lau, C AF Lau, C BE Padgett, ML Lindblad, T TI Neural networks on a chip SO SIXTH, SEVENTH, AND EIGHTH WORKSHOPS ON VIRTUAL INTELLIGENCE: ACADEMIC/INDUSTRIAL/NASA/DEFENSE TECHNICAL INTERCHANGE AND TUTORIALS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 6th/7th/8th Workshops on Virtual Intelligence, at the International Conference on Virtual Intelligence, Neural Networks, Fuzzy Systems, Evolutionary Computing and Virtual Reality 1996 CY 1996 CL ELECTR NETWORK SP Soc Comp Simulat Int, NASA, Soc Photo Opt Instrumentat Engineers, Int Neural Networks Soc, IEEE, Neural Networks Council C1 OFF NAVAL RES,ARLINGTON,VA 22217. 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 0-8194-2276-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2878 BP 450 EP 473 PG 24 WC Computer Science, Artificial Intelligence SC Computer Science GA BG44Q UT WOS:A1996BG44Q00038 ER PT B AU Bosse, A Kirby, GC Bellemore, D Kersey, AD Tsai, T Friebele, EJ AF Bosse, A Kirby, GC Bellemore, D Kersey, AD Tsai, T Friebele, EJ BE Chopra, I TI Strain-displacement mapping for a precision truss using Bragg-gratings and identified modeshapes SO SMART STRUCTURES AND INTEGRATED SYSTEMS: SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Structures and Integrated Systems CY FEB 26-29, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Army Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE smart structures; strain-displacement mapping; fiber Bragg gratings; shape estimation C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-8194-2092-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2717 BP 341 EP 349 DI 10.1117/12.239037 PG 3 WC Acoustics; Engineering, Aerospace; Engineering, Mechanical; Optics SC Acoustics; Engineering; Optics GA BF67T UT WOS:A1996BF67T00027 ER PT B AU McClelland, R Lim, TW Bosse, AB Fisher, S AF McClelland, R Lim, TW Bosse, AB Fisher, S BE Chopra, I TI Implementation of local feedback controllers for vibration suppression of a truss using active struts SO SMART STRUCTURES AND INTEGRATED SYSTEMS: SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Structures and Integrated Systems CY FEB 26-29, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Army Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE smart structures; active vibration suppression; local feedback control; integral force feedback; piezoelectric active struts C1 USN,RES LAB,NAVAL CTR SPACE TECHNOL,WASHINGTON,DC 20375. NR 0 TC 3 Z9 3 U1 1 U2 3 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2092-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2717 BP 452 EP 461 DI 10.1117/12.239047 PG 2 WC Acoustics; Engineering, Aerospace; Engineering, Mechanical; Optics SC Acoustics; Engineering; Optics GA BF67T UT WOS:A1996BF67T00036 ER PT B AU Bosse, A Fisher, S Shelly, S Lim, T AF Bosse, A Fisher, S Shelly, S Lim, T BE Chopra, I TI On the feasibility of adaptive vibration control of a space truss using modal filters and a neural network SO SMART STRUCTURES AND INTEGRATED SYSTEMS: SMART STRUCTURES AND MATERIALS 1996 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Structures and Integrated Systems CY FEB 26-29, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Army Res Off, ARPA, Boeing Def & Space Grp, Air Force Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE modal filters; adaptive control; on-line system identification; independent modal space control; structural control C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2092-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2717 BP 588 EP 599 DI 10.1117/12.239061 PG 2 WC Acoustics; Engineering, Aerospace; Engineering, Mechanical; Optics SC Acoustics; Engineering; Optics GA BF67T UT WOS:A1996BF67T00048 ER PT B AU Jones, RT Berkoff, TA Bellemore, DG Early, DA Sirkis, JS Putnam, MA Friebele, EJ Kersey, AD AF Jones, RT Berkoff, TA Bellemore, DG Early, DA Sirkis, JS Putnam, MA Friebele, EJ Kersey, AD BE Murphy, KA Huston, DR TI Cantilever plate deformation monitoring using wavelength division multiplexed fiber Bragg grating sensors SO SMART STRUCTURES AND MATERIALS 1996: SMART SENSING, PROCESSING, AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Sensing, Processing, and Instrumentation - Smart Structures and Materials 1996 CY FEB 26-28, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Res Off, ARPA, Boeing Def & Space Grp, USAF Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE cantilever plate; least-squares; Bragg grating sensors; frequency-division multiplexing C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 6 Z9 6 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2093-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2718 BP 258 EP 268 DI 10.1117/12.240899 PG 11 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BF76M UT WOS:A1996BF76M00025 ER PT B AU Davis, MA Kersey, AD AF Davis, MA Kersey, AD BE Murphy, KA Huston, DR TI Separating the temperature and strain effects on fiber Bragg grating sensors using stimulated Brillouin scattering SO SMART STRUCTURES AND MATERIALS 1996: SMART SENSING, PROCESSING, AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Sensing, Processing, and Instrumentation - Smart Structures and Materials 1996 CY FEB 26-28, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Res Off, ARPA, Boeing Def & Space Grp, USAF Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan C1 USN,RES LAB,DIV OPT SCI,OPT SENSOR SECT,WASHINGTON,DC 20375. NR 0 TC 2 Z9 2 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2093-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2718 BP 270 EP 278 DI 10.1117/12.240868 PG 9 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BF76M UT WOS:A1996BF76M00026 ER PT B AU Davis, MA Bellemore, DG Kersey, AD Putnam, MA Friebele, EJ Idriss, RL Kodinduma, M AF Davis, MA Bellemore, DG Kersey, AD Putnam, MA Friebele, EJ Idriss, RL Kodinduma, M BE Murphy, KA Huston, DR TI High sensor-count Bragg grating instrumentation system for large-scale structural monitoring applications SO SMART STRUCTURES AND MATERIALS 1996: SMART SENSING, PROCESSING, AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Sensing, Processing, and Instrumentation - Smart Structures and Materials 1996 CY FEB 26-28, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Res Off, ARPA, Boeing Def & Space Grp, USAF Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 11 Z9 11 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2093-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2718 BP 303 EP 309 DI 10.1117/12.240900 PG 7 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BF76M UT WOS:A1996BF76M00029 ER PT B AU Fabiny, L Kersey, AD AF Fabiny, L Kersey, AD BE Murphy, KA Huston, DR TI Fiber optic velocity sensor for monitoring of structural vibrations SO SMART STRUCTURES AND MATERIALS 1996: SMART SENSING, PROCESSING, AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Smart Sensing, Processing, and Instrumentation - Smart Structures and Materials 1996 CY FEB 26-28, 1996 CL SAN DIEGO, CA SP Soc Photo Opt Instrumentat Engineers, Amer Soc Mech Engineers, Soc Exptl Mech Inc, USA Res Off, ARPA, Boeing Def & Space Grp, USAF Wright Lab, Amer Inst Chem Engineers, Amer Phys Soc, Div Mat Phys, Ceram Soc Japan DE velocity sensor; velocimeter; fiber optic sensor; interferometer; laser Doppler C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-8194-2093-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2718 BP 332 EP 337 DI 10.1117/12.240872 PG 6 WC Engineering, Electrical & Electronic; Engineering, Mechanical; Instruments & Instrumentation; Optics SC Engineering; Instruments & Instrumentation; Optics GA BF76M UT WOS:A1996BF76M00032 ER PT B AU Yatko, BR Garrison, JD AF Yatko, BR Garrison, JD BE CampbellHowe, R WilkinsCrowder, B TI An evaluation of the effect of volcanic eruption on the solar radiation at Australian and Canadian stations SO SOLAR '96 - THE 1996 AMERICAN SOLAR ENERGY SOCIETY ANNUAL CONFERENCE, PROCEEDINGS OF LA English DT Proceedings Paper CT 1996 American-Solar-Energy-Society Annual Conference - Sundancin in the Smokies (Solar 96) CY APR 13-18, 1996 CL ASHEVILLE, NC SP Amer Solar Energy Soc AB Peak (most probable) and average values of Angstrom's turbidity coefficient P and peak (most probable) and average values of the diffuse index k(d) are obtained from the solar radiation data from 21 stations in Australia and 5 stations in Canada. These data exhibit clear increases in their values when the volcanic aerosols in the stratosphere increase following volcanic eruptions of sufficient magnitude. The effect of the eruptions of Fuego (1974), El Chichon (1982) and Pinatubo (1991) are seen most clearly in the data. The effect of lesser eruptions is also seen. The store of volcanic aerosols in the stratosphere shifts with the season so that scattering by volcanic aerosols in the spring half of the year is stronger than in the fall. RP Yatko, BR (reprint author), USN ACAD,DEPT PHYS,ANNAPOLIS,MD 21402, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMERICAN SOLAR ENERGY SOCIETY INC PI BOULDER PA 2400 CENTRAL AVE, SUITE G-1, BOULDER, CO 80301 BN 0-89553-168-2 PY 1996 BP 257 EP 262 PG 6 WC Energy & Fuels SC Energy & Fuels GA BJ08G UT WOS:A1996BJ08G00043 ER PT B AU Antiochos, SK AF Antiochos, SK BE Balasubramaniam, KS Keil, SL Smartt, RN TI Solar drivers of space weather SO SOLAR DRIVERS OF INTERPLANETARY AND TERRESTRIAL DISTURBANCES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 16th National Solar Observatory/Sacramento Peak International Workshop on Solar Drivers of Interplanetary and Terrestrial Disturbances CY OCT 16-20, 1995 CL SUNSPOT, NM SP Natl Solar Observ, Sacramento Peak C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. RI Antiochos, Spiro/D-4668-2012 OI Antiochos, Spiro/0000-0003-0176-4312 NR 0 TC 16 Z9 16 U1 0 U2 1 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-16-3 J9 ASTR SOC P PY 1996 VL 95 BP 1 EP 15 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG32E UT WOS:A1996BG32E00001 ER PT B AU Rodriguez, P AF Rodriguez, P BE Balasubramaniam, KS Keil, SL Smartt, RN TI High frequency radar detection of coronal mass ejections SO SOLAR DRIVERS OF INTERPLANETARY AND TERRESTRIAL DISTURBANCES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 16th National Solar Observatory/Sacramento Peak International Workshop on Solar Drivers of Interplanetary and Terrestrial Disturbances CY OCT 16-20, 1995 CL SUNSPOT, NM SP Natl Solar Observ, Sacramento Peak C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. NR 0 TC 3 Z9 3 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-16-3 J9 ASTR SOC P PY 1996 VL 95 BP 180 EP 188 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG32E UT WOS:A1996BG32E00021 ER PT B AU Karpen, JT Dahlburg, RB AF Karpen, JT Dahlburg, RB BE Balasubramaniam, KS Keil, SL Smartt, RN TI The triple current-sheet model for adjoining helmet streamers SO SOLAR DRIVERS OF INTERPLANETARY AND TERRESTRIAL DISTURBANCES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 16th National Solar Observatory/Sacramento Peak International Workshop on Solar Drivers of Interplanetary and Terrestrial Disturbances CY OCT 16-20, 1995 CL SUNSPOT, NM SP Natl Solar Observ, Sacramento Peak C1 USN,RES LAB,WASHINGTON,DC 20375. RI Karpen, Judith/E-1484-2012 NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASTRONOMICAL SOC PACIFIC PI SAN FRANCISCO PA 390 ASHTON AVE, SAN FRANCISCO, CA 94112 BN 1-886733-16-3 J9 ASTR SOC P PY 1996 VL 95 BP 333 EP 340 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG32E UT WOS:A1996BG32E00038 ER PT B AU Mariska, JT Lean, J AF Mariska, JT Lean, J BE Balasubramaniam, KS Keil, SL Smartt, RN TI Radiative influences SO SOLAR DRIVERS OF INTERPLANETARY AND TERRESTRIAL DISTURBANCES SE ASTRONOMICAL SOCIETY OF THE PACIFIC CONFERENCE SERIES LA English DT Proceedings Paper CT 16th National Solar Observatory/Sacramento Peak International Workshop on Solar Drivers of Interplanetary and Terrestrial Disturbances CY OCT 16-20, 1995 CL SUNSPOT, NM SP Natl Solar Observ, Sacramento Peak C1 USN,RES LAB,WASHINGTON,DC 20375. 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 1-886733-16-3 J9 ASTR SOC P PY 1996 VL 95 BP 555 EP 567 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BG32E UT WOS:A1996BG32E00066 ER PT J AU Knipp, PA Reinecke, TL AF Knipp, PA Reinecke, TL TI Electron scattering from acoustic phonons in quantum dots and other nanostructures SO SOLID-STATE ELECTRONICS LA English DT Article; Proceedings Paper CT 7th International Conference on Modulated Semiconductor Structures (MSS-7) CY JUL 10-14, 1995 CL MADRID, SPAIN SP Univ Autonoma Madrid, Comision Interminist Cienciaa & Tecnol, Minist Educ & Ciencia, Consejo Super Investigac Cient, Comunidad Autonoma Madrid, Univ Politecn Madrid, European Community, IUPAP, ATT Microelectron Espana, IBM, Espana, Instrumat Espanola S A AB Scattering of electrons from acoustic phonons in semiconductor nanostructures occurs via an interaction, which we call the ''ripple mechanism'', in addition to the usual deformation potential coupling. We provide a general derivation of this novel coupling mechanism and give detailed expressions for it which are valid for all nanostructure systems, including those with quasi-zero-, one- and two-dimensional geometries. Calculations are presented here of the electron scattering rates due to acoustic phonons for quantum dots in a variety of shapes. We find that scattering due to the ripple mechanism dominates that from the deformation potential for dot sizes less than similar to 50 nm and that the ripple mechanism contribution can be much larger for smaller dot sizes. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Knipp, PA (reprint author), CHRISTOPHER NEWPORT UNIV,DEPT PHYS & COMP SCI,NEWPORT NEWS,VA 23606, USA. NR 6 TC 5 Z9 5 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PY 1996 VL 40 IS 1-8 SI SI BP 343 EP 347 DI 10.1016/0038-1101(95)00325-8 PG 5 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA UN207 UT WOS:A1996UN20700072 ER PT B AU Scheps, R AF Scheps, R BE Scheps, R TI Upconversion laser pump processes in Er3+:YAlO3 SO SOLID STATE LASERS V SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Solid State Lasers V Conference CY JAN 29-30, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers DE upconversion; Er:YALO; solid state laser; visible laser; cw laser; Er3+; photon avalanche upconversion C1 USN,CONTROL & OCEAN SURVEILLANCE CTR,RDT&E DIV,SAN DIEGO,CA 92152. NR 0 TC 0 Z9 0 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2072-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2698 BP 124 EP 135 DI 10.1117/12.236148 PG 12 WC Optics SC Optics GA BF25B UT WOS:A1996BF25B00015 ER PT J AU Gardner, TA Joutz, FL AF Gardner, TA Joutz, FL TI Economic growth, energy prices and technological innovation SO SOUTHERN ECONOMIC JOURNAL LA English DT Article; Proceedings Paper CT 15th Annual North American Conference of the International-Energy-Economists-Association CY OCT 11-13, 1993 CL SEATTLE, WA SP Int Energy Economists Assoc ID COINTEGRATION C1 GEORGE WASHINGTON UNIV,WASHINGTON,DC. RP Gardner, TA (reprint author), USN,PENTAGON,WASHINGTON,DC 20375, USA. NR 33 TC 8 Z9 10 U1 0 U2 2 PU UNIV NORTH CAROLINA PI CHAPEL HILL PA SOUTHERN ECONOMIC JOURNAL, CHAPEL HILL, NC 27514 SN 0038-4038 J9 SOUTHERN ECON J JI South. Econ. J. PD JAN PY 1996 VL 62 IS 3 BP 653 EP 666 DI 10.2307/1060885 PG 14 WC Economics SC Business & Economics GA TQ234 UT WOS:A1996TQ23400008 ER PT S AU Haber, I Callahan, DA Friedman, A Grote, DP Kehne, D Langdon, AB Reiser, M Rudd, H Suk, H Wang, DX Wang, JG AF Haber, I Callahan, DA Friedman, A Grote, DP Kehne, D Langdon, AB Reiser, M Rudd, H Suk, H Wang, DX Wang, JG BE Lee, SY TI Maryland transport experiment comparison to theory and simulation SO SPACE CHARGE DOMINATED BEAMS AND APPLICATIONS OF HIGH BRIGHTNESS BEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Workshop on Space Charge Dominated Beams and Applications of High Brightness Beams CY OCT 10-13, 1995 CL BLOOMINGTON, IN C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-625-5 J9 AIP CONF PROC PY 1996 IS 377 BP 105 EP 123 PG 19 WC Physics, Particles & Fields SC Physics GA BF97U UT WOS:A1996BF97U00009 ER PT S AU Haber, I Callahan, DA Celata, CM Fawley, WM Friedman, A Grote, DP Langdon, AB AF Haber, I Callahan, DA Celata, CM Fawley, WM Friedman, A Grote, DP Langdon, AB BE Lee, SY TI PIC simulation of short scale-length phenomena SO SPACE CHARGE DOMINATED BEAMS AND APPLICATIONS OF HIGH BRIGHTNESS BEAMS SE AIP CONFERENCE PROCEEDINGS LA English DT Proceedings Paper CT Workshop on Space Charge Dominated Beams and Applications of High Brightness Beams CY OCT 10-13, 1995 CL BLOOMINGTON, IN C1 USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AIP PRESS PI WOODBURY PA AMERICAN INSTITUTE OF PHYSICS 500 SUNNYSIDE BOULEVARD, WOODBURY, NY 11797-2999 SN 0094-243X BN 1-56396-625-5 J9 AIP CONF PROC PY 1996 IS 377 BP 244 EP 259 PG 16 WC Physics, Particles & Fields SC Physics GA BF97U UT WOS:A1996BF97U00019 ER PT S AU Coffey, SL Eckstein, B Kelm, B AF Coffey, SL Eckstein, B Kelm, B BE Powell, GE Bishop, RH Lundberg, JB Smith, RH TI Compression of satellite orbits SO SPACEFLIGHT MECHANICS 1996, PTS 1 AND 2 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT AAS/AIAA Spaceflight Mechanics Conference CY FEB 12-15, 1996 CL AUSTIN, TX SP AAS, AIAA C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 2 Z9 2 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-414-1 J9 ADV ASTRONAUT SCI PY 1996 VL 93 BP 371 EP 389 PG 19 WC Engineering, Aerospace SC Engineering GA BG27W UT WOS:A1996BG27W00024 ER PT S AU Melvin, PJ AF Melvin, PJ BE Powell, GE Bishop, RH Lundberg, JB Smith, RH TI The topex orbit in Orlov's plane and other applications of orbit local spherical harmonics SO SPACEFLIGHT MECHANICS 1996, PTS 1 AND 2 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT AAS/AIAA Spaceflight Mechanics Conference CY FEB 12-15, 1996 CL AUSTIN, TX SP AAS, AIAA C1 USN,RES LAB,ASTRODYNAM & SPACE APPLICAT OFF,WASHINGTON,DC 20375. NR 0 TC 3 Z9 3 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-414-1 J9 ADV ASTRONAUT SCI PY 1996 VL 93 BP 601 EP 620 PG 20 WC Engineering, Aerospace SC Engineering GA BG27W UT WOS:A1996BG27W00037 ER PT S AU Melvin, PJ AF Melvin, PJ BE Powell, GE Bishop, RH Lundberg, JB Smith, RH TI A Kalman filter for orbit determination with applications to GPS and stellar navigation SO SPACEFLIGHT MECHANICS 1996, PTS 1 AND 2 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT AAS/AIAA Spaceflight Mechanics Conference CY FEB 12-15, 1996 CL AUSTIN, TX SP AAS, AIAA C1 USN,RES LAB,ASTRODYNAM & SPACE APPLICAT OFF,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-414-1 J9 ADV ASTRONAUT SCI PY 1996 VL 93 BP 719 EP 738 PG 20 WC Engineering, Aerospace SC Engineering GA BG27W UT WOS:A1996BG27W00044 ER PT S AU Coffey, SL Jenkins, E Neal, HL Reynolds, H AF Coffey, SL Jenkins, E Neal, HL Reynolds, H BE Powell, GE Bishop, RH Lundberg, JB Smith, RH TI Parallel processing of uncorrelated observations into satellite orbits SO SPACEFLIGHT MECHANICS 1996, PTS 1 AND 2 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT AAS/AIAA Spaceflight Mechanics Conference CY FEB 12-15, 1996 CL AUSTIN, TX SP AAS, AIAA C1 USN,RES LAB,MATH & ORBIT DYNAM SECT,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-414-1 J9 ADV ASTRONAUT SCI PY 1996 VL 93 BP 739 EP 756 PG 18 WC Engineering, Aerospace SC Engineering GA BG27W UT WOS:A1996BG27W00045 ER PT S AU Swift, ER Merrigan, MJ Gouldman, MW AF Swift, ER Merrigan, MJ Gouldman, MW BE Powell, GE Bishop, RH Lundberg, JB Smith, RH TI Orbit estimation results for TOPEX/POSEIDON based on GPS tracking data SO SPACEFLIGHT MECHANICS 1996, PTS 1 AND 2 SE ADVANCES IN THE ASTRONAUTICAL SCIENCES LA English DT Proceedings Paper CT AAS/AIAA Spaceflight Mechanics Conference CY FEB 12-15, 1996 CL AUSTIN, TX SP AAS, AIAA C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,SPACE & GEODESY BRANCH,DAHLGREN,VA 22448. NR 0 TC 0 Z9 0 U1 0 U2 0 PU UNIVELT INC PI SAN DIEGO PA PO BOX 28130, SAN DIEGO, CA 92128 SN 0065-3438 BN 0-87703-414-1 J9 ADV ASTRONAUT SCI PY 1996 VL 93 BP 1297 EP 1312 PG 16 WC Engineering, Aerospace SC Engineering GA BG27W UT WOS:A1996BG27W00079 ER PT B AU Wolk, M Armstrong, EP Mann, EL AF Wolk, M Armstrong, EP Mann, EL BE Gee, AE Houee, JF TI TOW optical and infrared test and alignment calibration capability SO SPECIFICATION, PRODUCTION, AND TESTING OF OPTICAL COMPONENTS AND SYSTEMS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Specification, Production, and Testing of Optical Components and Systems CY MAY 13-16, 1996 CL GLASGOW, SCOTLAND SP Corning France, Essilor Int, Glasgow Dev Agcy, Pilkington Optron, Scottish Enterprise, European Opt Soc, Soc Photo Opt Instrumentat Engineers, Commiss European Communities, Directorate Gen Sci Res & Dev, Inst Phys DE TOW guided missile; day sight; optical infrared boresight collimator; blackbody; radiometry; effective rms irradiance C1 USN,NAVAL AVIAT DEPOT N ISL,PRIMARY STAND LAB,SAN DIEGO,CA 92135. NR 0 TC 0 Z9 1 U1 0 U2 2 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2160-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2775 BP 74 EP 93 DI 10.1117/12.246776 PG 20 WC Optics SC Optics GA BG32V UT WOS:A1996BG32V00008 ER PT B AU Kendziora, C Kelley, RJ Onellion, M AF Kendziora, C Kelley, RJ Onellion, M BE Bozovic, I vanderMarel, D TI Electronic Raman scattering as a function of doping in high-T-c superconductors SO SPECTROSCOPIC STUDIES OF SUPERCONDUCTORS, PTS A AND B: PT A - INFRARED AND RAMAN SPECTRA; PT B - TUNNELING, PHOTOELECTRON, AND OTHER SPECTRA SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Spectroscopic Studies of Superconductors CY JAN 29-FEB 01, 1996 CL SAN JOSE, CA SP Soc Photo Opt Instrumentat Engineers, USN, Off Naval Res, Varian Assoc Inc DE high-T-c superconductor; electronic Raman scattering; gap anisotropy C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 2 Z9 2 U1 1 U2 1 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2070-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2696 BP 223 EP 229 DI 10.1117/12.241776 PN A&B PG 7 WC Optics; Physics, Condensed Matter; Spectroscopy SC Optics; Physics; Spectroscopy GA BG07T UT WOS:A1996BG07T00022 ER PT S AU Clem, TR KeKelis, GJ Lathrop, JD Overway, DJ Wynn, WM AF Clem, TR KeKelis, GJ Lathrop, JD Overway, DJ Wynn, WM BE Weinstock, H TI Superconducting magnetic gradiometers for mobile applications with an emphasis on ordnance detection SO SQUID SENSORS: FUNDAMENTALS, FABRICATION AND APPLICATIONS SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES E, APPLIED SCIENCES LA English DT Proceedings Paper CT NATO Advanced Study Institute on SQUID Sensors - Fundamentals, Fabrication and Applications CY JUN 18-30, 1995 CL ACQUAFREDDA DI MARATEA, ITALY SP NATO, Sci & Environm Affairs Div AB Passive magnetic sensors provide one means to conduct mobile area surveys and search operations, useful for a number of applications, including sea mine countermeasures and the detection of unexploded ordnance and packaged biological, chemical and radioactive waste for environmental cleanup. To date, the generally accepted method for such detection involves the generation of two- or three-dimensional magnetic anomaly field maps, using primarily total-field magnetometers. Sensor configurations measuring spatial gradients of magnetic field offer a new opportunity for better localization and classification. Sensors incorporating Superconducting Quantum Interference Devices (SQUIDs) provide the greatest sensitivity available with current technology for magnetic anomaly detection. During the late 1970's and early 1980's, the Naval Surface Warfare Center Coastal Systems Station (CSS) developed the Superconducting Gradiometer/Magnetometer Sensor (SGMS) specifically for mobile operations outside the laboratory environment. This sensor technology utilized niobium superconducting components cooled by liquid helium. The SGMS has demonstrated rugged, reliable performance even onboard airborne and undersea towed platforms. In this article, a general perspective for the use of passive magnetic sensors for mobile operations will be established. The SGMS design will be described in some detail. General design principles underlying its mobile application, fundamental sensor and environmental noise issues, and approaches to compensate for them, will be presented. The magnetic sensor detection and classification concept developed for sea mine countermeasures and results from that demonstration will be discussed Recent developments and future opportunities, especially encompassing the use of high temperature (high-T-c superconducting components cooled by liquid nitrogen, will be addressed. RP Clem, TR (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,COASTAL SYST STN,PANAMA CITY,FL 32407, USA. NR 0 TC 7 Z9 7 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0168-132X BN 0-7923-4350-6 J9 NATO ADV SCI I E-APP PY 1996 VL 329 BP 517 EP 568 PG 52 WC Physics, Applied SC Physics GA BG83E UT WOS:A1996BG83E00014 ER PT S AU Papaconstantopoulos, DA Mehl, MJ AF Papaconstantopoulos, DA Mehl, MJ BE Gonis, A Turchi, PEA Kudrnovsky, J TI New tight-binding methodology for calculating total energies of solids SO STABILITY OF MATERIALS SE NATO ADVANCED SCIENCE INSTITUTES SERIES, SERIES B, PHYSICS LA English DT Proceedings Paper CT NATO Advanced Study Institute on Stability of Materials CY JUN 25-JUL 07, 1994 CL CORFU, GREECE SP NATO, Sci Affairs Div, US DOE, Lawrence Livermore Natl Lab, Natl Sci Fdn, Univ Kentucky, Ctr Comp Sci C1 USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375. RI Mehl, Michael/H-8814-2016 NR 0 TC 3 Z9 3 U1 0 U2 1 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0258-1221 BN 0-306-45311-8 J9 NATO ADV SCI INST SE PY 1996 VL 355 BP 325 EP 332 PG 8 WC Materials Science, Multidisciplinary; Mathematics, Applied; Physics, Applied; Physics, Mathematical SC Materials Science; Mathematics; Physics GA BF84E UT WOS:A1996BF84E00020 ER PT B AU Rogers, GW Olson, T Priebe, CE Marchette, DJ AF Rogers, GW Olson, T Priebe, CE Marchette, DJ BE Dougherty, ER Preteux, F Davidson, JL TI An imposed measure approach to stochastic clutter characterization SO STATISTICAL AND STOCHASTIC METHODS FOR IMAGE PROCESSING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Statistical and Stochastic Methods for Image Processing CY AUG 04-05, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE stochastic; spatial; semiparametric density estimation; random fields C1 USN,CTR SURFACE WARFARE,ADV COMPUTAT TECH GRP,DAHLGREN,VA 22448. RI Priebe, Carey E./A-3305-2010 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 0-8194-2211-8 J9 P SOC PHOTO-OPT INS PY 1996 VL 2823 BP 13 EP 19 DI 10.1117/12.253455 PG 7 WC Optics; Statistics & Probability SC Optics; Mathematics GA BG61R UT WOS:A1996BG61R00002 ER PT S AU Mozurkewich, D AF Mozurkewich, D BE Strassmeier, KG Linsky, JL TI Interferometric imaging of stellar surfaces SO STELLAR SURFACE STRUCTURE SE IAU SYMPOSIA LA English DT Article; Proceedings Paper CT 176th Symposium of the International-Astronomical-Union - Stellar Surface Structure CY OCT 09-13, 1995 CL VIENNA, AUSTRIA SP Int Astron Union ID OPTICAL INTERFEROMETRY AB Until recently, all study of stellar surface structure, except for the sun, has been limited to indirect methods. This state of affairs is rapidly changing. With the introduction of interferometric techniques to optical astronomy, direct imaging of stellar surfaces is finally possible. Within a few years we will have images with sub-milliarcsecond resolution and 10 or more resolution elements across the stellar surface. In this talk, I will describe the technique of optical interferometry and explain how it can be made to work through the earth's turbulent atmosphere. I will show some actual data and describe what can be expected in the near future. RP Mozurkewich, D (reprint author), USN,RES LAB,REMOTE SENSING DIV,4555 OVERLOOK AVE SE,WASHINGTON,DC 20375, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0074-1809 BN 0-7923-4026-4 J9 IAU SYMP PY 1996 IS 176 BP 131 EP 138 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BF97X UT WOS:A1996BF97X00012 ER PT S AU Ho, T Malik, AA Wynne, KJ McCarthy, TJ Zhuang, KHZ Baum, K Honeychuck, RV AF Ho, T Malik, AA Wynne, KJ McCarthy, TJ Zhuang, KHZ Baum, K Honeychuck, RV BE Hedrick, JL Labadie, JW TI Polyurethanes based on fluorinated diols SO STEP-GROWTH POLYMERS FOR HIGH-PERFORMANCE MATERIALS: NEW SYNTHETIC METHODS SE ACS SYMPOSIUM SERIES LA English DT Article; Proceedings Paper CT Symposium on Step-Growth Polymers for High-Performance Materials - New Synthetic Methods CY APR 02-07, 1995 CL ANAHEIM, CA SP Amer Chem Soc, Div Polym Chem Inc ID SEGMENTED POLY(ETHER URETHANES); PERFLUORO CHAIN EXTENDERS; ELASTOMERS; COPOLYMERS; SURFACE AB Two types of fluorinated polyurethanes were prepared, and their thermal and surface properties were evaluated. Polyurethanes containing fluorinated segments in the backbone were synthesized based on ethylene-fluoroalkyl-ethylene diols and 1,6-hexamethylene diisocyanate (HDI). Polyurethanes containing fluorinated side chains were prepared from a polyfluorooxetane prepolymer, methylene bis(phenylene isocyanate) (MDI) or isophorone diisocyanate (IPDI), and using benzene dimethanol (BDM) as the chain extender. Both types of polyurethanes show low glass transition temperatures and low surface energies (i.e. high advancing contact angles of water.) C1 GEORGE MASON UNIV,DEPT CHEM,FAIRFAX,VA 22030. GENCORP AEROJET,CHEM PROD,SACRAMENTO,CA 95813. USN,RES LAB,MAT PHYS BRANCH,WASHINGTON,DC 20375. OFF NAVAL RES,PHYS SCI S&T DIV,ARLINGTON,VA 22217. UNIV MASSACHUSETTS,DEPT POLYMER SCI & ENGN,AMHERST,MA 01003. SUNY BUFFALO,DEPT CHEM,BUFFALO,NY 14260. FLUOROCHEM INC,AZUSA,CA 91702. NR 24 TC 9 Z9 9 U1 0 U2 1 PU AMER CHEMICAL SOC PI WASHINGTON PA 1155 SIXTEENTH ST NW, WASHINGTON, DC 20036 SN 0097-6156 BN 0-8412-3394-2 J9 ACS SYM SER PY 1996 VL 624 BP 362 EP 376 PG 15 WC Chemistry, Multidisciplinary; Mechanics SC Chemistry; Mechanics GA BF18Z UT WOS:A1996BF18Z00023 ER PT B AU Darken, RP Darken, CJ AF Darken, RP Darken, CJ BE Bolas, MT Fisher, SS Merritt, JO TI VR+AI equals intelligent environments: A synergistic approach to engineering design support SO STEREOSCOPIC DISPLAYS AND VIRTUAL REALITY SYSTEMS III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Stereoscopic Displays and Applications VII/Complementary Conference - The Engineering Reality of Virtual Reality 1996 CY JAN 30-FEB 02, 1996 CL SAN JOSE, CA SP Soc Imaging Sci & Technol, Soc Photo Opt Instrumentat Engineers DE virtual reality; artificial intelligence; engineering design C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-8194-2027-1 J9 P SOC PHOTO-OPT INS PY 1996 VL 2653 BP 292 EP 300 DI 10.1117/12.237450 PG 9 WC Computer Science, Cybernetics; Optics SC Computer Science; Optics GA BF46U UT WOS:A1996BF46U00034 ER PT B AU Moran, AL Rebis, RE AF Moran, AL Rebis, RE BE Loria, EA TI Spray formed superalloy 625 piping SO SUPERALLOYS 718, 625, 706 AND VARIOUS DERIVATIVES LA English DT Proceedings Paper CT International Symposium on Superalloys 718, 625, 706 and Various Derivatives CY JUN 15-18, 1997 CL PITTSBURGH, PA SP Minerals Met & Mat Soc, ASM Int, Natl Assoc Corros Engineers, Nickel Dev Inst AB Spray formed Alloy 625 piping subjected to standard amounts of cold reduction performed comparably to conventionally processed Alloy 625 piping and met the chemical analysis specifications and metallurgical requirements for porosity, oxide content and grain size required for Navy applications. Mechanical testing indicated that the tensile strength and ductility of roll extruded and pilger rolled pipes easily exceeded the minimum requirements while results of the hardness testing and Charpy impact testing showed no significant difference between as-sprayed preforms, spray formed and processed thin-walled piping, and conventionally produced piping. Results of fatigue testing of spray formed Alloy 625 pipes indicated that post processing is necessary to achieve the fatigue performance in terms of endurance limit of conventionally processed Alloy 625 pipes. Of the two post processing methods employed in this study, both methods diminished porosity and produced a fine grain size but roll-extrusion yielded a more uniform microstructure and better fatigue and strength properties. A weldability evaluation indicated that the hot-cracking resistance and mechanical properties of welded, spray formed Alloy 625 products were at least equivalent to that of conventional Alloy 625. Additionally, spray formed Alloy 625 piping performed comparably in service testing to wrought piping. Thus, Alloy 625 piping produced from spray formed tubulars appears to be a viable substitute for conventionally produced Alloy 625 piping. C1 USN Acad, Dept Mech Engn, Carderock Div, Annapolis, MD 21402 USA. RP Moran, AL (reprint author), USN Acad, Dept Mech Engn, Carderock Div, Annapolis, MD 21402 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-376-7 PY 1996 BP 469 EP 478 PG 10 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BK32V UT WOS:000071823100048 ER PT B AU Czyryca, EJ AF Czyryca, EJ BE Loria, EA TI Fatigue and corrosion fatigue properties of alloys 625 plus, 718, 725 and K-500 SO SUPERALLOYS 718, 625, 706 AND VARIOUS DERIVATIVES LA English DT Proceedings Paper CT International Symposium on Superalloys 718, 625, 706 and Various Derivatives CY JUN 15-18, 1997 CL PITTSBURGH, PA SP Minerals Met & Mat Soc, ASM Int, Natl Assoc Corros Engineers, Nickel Dev Inst AB The mechanical, fatigue, and corrosion fatigue properties of precipitation-hardened Ni-Cr-Mo-Cb-Ti alloys, Custom Age 625 PLUS(R), ALLVAC 716, and INCONEL 725(R), in bar product, were determined to assess their suitability for use as high-strength fasteners in marine applications. These alloys are intended for Ni-Cu-Al Alloy K-500 replacement. The evaluation of the alloys included tensile tests, hardness tests, Charpy V-notch impact tests, and high-cycle corrosion fatigue tests using rotating beam-type specimens. The notch used in the fatigue specimens was a machined, circumferential V-groove to result in a theoretical stress concentration factor, K-t approximate to 3. The results showed that the mechanical and fatigue properties of the precipitation-hardened Ni-Cr-Mo-Cb-Ti alloys, Custom Age 625 PLUS(R), ALLVAC 716, and INCONEL 725(R), met or exceeded the comparative properties of Alloy K-500 in all the tests conducted. The precipitation-hardened Ni-Cr-Mo-Cb-Ti alloy types exhibited these properties over a range of bar diameters from 1 to 5 inches. The corrosion fatigue properties were compared to results for Alloy 718, as well as alloy K-500, and assessed in terms of marine fastener fatigue performance. C1 USN, Ctr Surface Warfare, Carderock Div, W Bethesda, MD 20817 USA. RP Czyryca, EJ (reprint author), USN, Ctr Surface Warfare, Carderock Div, 9500 MacArthur Blvd, W Bethesda, MD 20817 USA. NR 0 TC 0 Z9 0 U1 4 U2 12 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-376-7 PY 1996 BP 639 EP 652 PG 14 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BK32V UT WOS:000071823100066 ER PT J AU Packard, WE Dow, JD Nicolaides, R Doverspike, K Kaplan, R AF Packard, WE Dow, JD Nicolaides, R Doverspike, K Kaplan, R TI Scanning tunneling microscopy of the GaN(0001) surface SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article ID VAPOR-PHASE EPITAXY; GAN; DEPENDENCE; DEFECTS; LAYERS AB The wurtzite GaN(0001) surface is imaged by scanning tunneling microscopy. Terraces are observed with line-defect structures on them: primarily regularly spaced striations perpendicular to step edges. A model of these striations as ordered N-vacancies is presented. (C) 1996 Academic Press Limited C1 INST POSTDOCTORAL STUDIES,ST JOHN,VI 00830. USN,RES LAB,WASHINGTON,DC 20375. RP Packard, WE (reprint author), ARIZONA STATE UNIV,DEPT PHYS & ASTRON,TEMPE,AZ 85287, USA. NR 13 TC 10 Z9 10 U1 1 U2 1 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1996 VL 20 IS 2 BP 145 EP 148 DI 10.1006/spmi.1996.0060 PG 4 WC Physics, Condensed Matter SC Physics GA VH653 UT WOS:A1996VH65300002 ER PT J AU Poweleit, CD Smith, LM Jonker, BT AF Poweleit, CD Smith, LM Jonker, BT TI Time-resolved spin dynamics in strained Zn1-xMnxSe/ZnSe spin superlattices SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article ID MAGNETIC SEMICONDUCTOR SUPERLATTICES; GAAS QUANTUM-WELLS; POLARIZATION SPECTROSCOPY; HETEROSTRUCTURES; RELAXATION; CONFINEMENT; CARRIERS AB We use time-resolved spectroscopy to directly compare the spin dynamics in strained ZnMnSe epilayers and strained ZnMnSe/ZnSe spin superlattices. The spin-relaxation in these materials is observed to depend strongly on the concentration of the magnetic impurities. Surprisingly, however, no difference is observed between the spin-relaxation of excitons in the quasi-three-dimensional epilayers or the two-dimensional spin superlattices. Indeed, the spin-relaxation of excitons is also seen to be independent of the applied magnetic field or magnetization of the Mn-impurities. (C) 1996 Academic Press Limited C1 USN,RES LAB,WASHINGTON,DC 20375. RP Poweleit, CD (reprint author), UNIV CINCINNATI,DEPT PHYS,CINCINNATI,OH 45255, USA. RI Smith, Leigh/A-1071-2009 OI Smith, Leigh/0000-0002-3950-1713 NR 21 TC 1 Z9 1 U1 0 U2 0 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1996 VL 20 IS 2 BP 221 EP 227 DI 10.1006/spmi.1996.0071 PG 7 WC Physics, Condensed Matter SC Physics GA VH653 UT WOS:A1996VH65300013 ER PT J AU Ancona, MG AF Ancona, MG TI Systolic processor designs using single-electron digital circuits SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article DE Coulomb blockade; systolic processors; single-electron digital circuits; error correction ID CELLULAR-AUTOMATA; FOURIER-TRANSFORM; PUMP; COMPUTATION; ACCURACY AB The possibility of using single-electron digital circuits (SEDCs) to achieve ultra-high performance digital signal processing is explored. SEDCs are highly-scalable Coulomb blockade-based circuits that operate in the discrete limit where bits are represented by single electrons. Such circuits are well-suited to implementing bit-level systolic processing algorithms because the local connectivity of systolic arrays translates into locally-interconnected hardware. By relieving interconnect bandwidth limitations this enables circuits that can fully exploit the extreme scaling possible with the single-electron devices. Errors associated with co-tunneling, thermal fluctuations, etc. are an important issue in single-electron circuits, especially for a digital application. The systolic arrays are, however, amenable to simple error-correction techniques which may make computing with these unreliable components possible. Nevertheless, it must be emphasized that realization of these complex circuits depends on tremendous advances in fabrication technology, particularly to meet their stringent uniformity requirements. (C) 1996 Academic Press Limited RP USN, RES LAB, WASHINGTON, DC 20375 USA. NR 37 TC 7 Z9 7 U1 0 U2 1 PU ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD PI LONDON PA 24-28 OVAL RD, LONDON NW1 7DX, ENGLAND SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1996 VL 20 IS 4 BP 461 EP 472 DI 10.1006/spmi.1996.0103 PG 12 WC Physics, Condensed Matter SC Physics GA VW952 UT WOS:A1996VW95200006 ER PT J AU Rendell, RW Ancona, MG AF Rendell, RW Ancona, MG TI Adaptive computation by interacting quantum dots SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article DE quantum dots; nanoelectronics; adaptive control ID COULOMB-BLOCKADE; BISTABLE SATURATION; CELLULAR-AUTOMATA; ELECTRONS; DYNAMICS; DEVICES; SYSTEMS; FIELD; POLARIZATION; LOCALIZATION AB We present a theoretical study and discussion of computationally useful nanoelectronic circuits which use adaptive control methods both to achieve the circuit function and to compensate for unpredictable nonuniformities in the circuit environment. In the regime where the scaling of conventional digital electronics breaks down, nanoelectronic circuitry will be required to perform robustly in the presence of inevitable device-device interactions, sensitivity to circuit parameters of quantum devices, and deviations from ideal circuit design. To examine the, role of adaption in addressing these issues, we focus on a specific class of scaleable circuit architectures composed of Coulombically interacting polarizable anisotropic quantum dots which include input polarization dots, output polarization dots, and an array of processing dots. We implement the adaptive control of these circuits by assuming that particular features of the processing dots such as energy barriers, charge, shape, or orientation can be experimentally modified. A method of adaptive feedback is used to modify the processing dots and produce desired correlations between the input and output dot polarizations as computed by the circuit. A variational quantum Monte Carlo method has been used to simulate the many-body response of model GaAs dot circuits in which the mutual orientation of the dots is adapted to successfully achieve different desired patterns of correlation. We demonstrate the robustness of the adaptive circuits for circuit nonuniformities and for sensitivity to circuit parameters due to quantum effects. (C) 1996 Academic Press Limited RP Rendell, RW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Schaff, William/B-5839-2009 NR 61 TC 6 Z9 6 U1 0 U2 1 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1996 VL 20 IS 4 BP 479 EP 491 DI 10.1006/spmi.1996.0105 PG 13 WC Physics, Condensed Matter SC Physics GA VW952 UT WOS:A1996VW95200008 ER PT J AU Snow, ES Campbell, PM Park, D AF Snow, ES Campbell, PM Park, D TI Metal point contacts and metal-oxide tunnel barriers fabricated with an AFM SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article ID TIP-INDUCED ANODIZATION; CONDUCTANCE QUANTIZATION; MICROSCOPE; NANOFABRICATION; SILICON; NANOSTRUCTURES; TITANIUM; SURFACE AB We report the fabrication of atomic point contacts and lateral tunnel junctions by using anodic oxidation of thin metal films with an atomic force microscope. In situ electrical measurements were used as feedback to control the fabrication of metal nanowires that were subsequently anodized through their cross section to form point contacts and tunnel junctions. When the conductance of an Al device is reduced below similar to 5 x 10(-4) S it starts to decrease in discrete steps of similar to 2e(2)/h. In some devices we are able to stabilize the conductance at a value near 2e(2)/h which corresponds to a single, atomic-sized conducting channel. Similar experiments on Ti devices result in a continuous decrease of the conductance and the formation of stable tunnel junctions. This continuous behavior is a result of the large series resistance and the small oxide barrier height of the Ti/TiOx system. (C) 1996 Academic Press Limited RP Snow, ES (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 21 TC 12 Z9 12 U1 0 U2 6 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1996 VL 20 IS 4 BP 545 EP 553 DI 10.1006/spmi.1996.0113 PG 9 WC Physics, Condensed Matter SC Physics GA VW952 UT WOS:A1996VW95200016 ER PT J AU Tonucci, RJ Pearson, DH Katzer, DS Rosenberg, A Dietrich, HB AF Tonucci, RJ Pearson, DH Katzer, DS Rosenberg, A Dietrich, HB TI Nanoscale patterning using nanochannel glass replica films SO SUPERLATTICES AND MICROSTRUCTURES LA English DT Article DE quantum well; molecular beam epitaxy (MBE); nanochannel glass (NCG); GaAs/AlxGa1-xAs ID GAAS; DAMAGE AB Nanochannel glass replica films have been used as masks for the in-situ parallel patterning of GaAs/AlGaAs single quantum wells during growth by MBE. Quantum well pyramids with lateral dimensions as small as 500 nm exhibit low temperature (5 K) photoluminescence associated with the 50 Angstrom well thickness of the structure. By control of the replica membrane properties and deposition conditions, we demonstrate that it may be possible to reduce the lateral dimensions of layered structures beyond what would normally be expected from the starting apertures. (C) 1996 Academic Press Limited RP Tonucci, RJ (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Katzer, D. Scott/N-7841-2013 NR 11 TC 2 Z9 2 U1 0 U2 0 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 0749-6036 J9 SUPERLATTICE MICROST JI Superlattices Microstruct. PY 1996 VL 20 IS 4 BP 627 EP 632 DI 10.1006/spmi.1996.0125 PG 6 WC Physics, Condensed Matter SC Physics GA VW952 UT WOS:A1996VW95200028 ER PT B AU Weiler, KW VanDyk, SD Sramek, RA Panagia, N AF Weiler, KW VanDyk, SD Sramek, RA Panagia, N BE McCray, R Wang, Z TI Radio supernovae SO SUPERNOVAE AND SUPERNOVA REMNANTS SE IAU COLLOQUIUM LA English DT Proceedings Paper CT International-Astronomical-Union Colloquium 145 on Supernovae and Supernova Remnants CY MAY 24-29, 1993 CL XIAN, PEOPLES R CHINA SP Int Astron Union, State Sci & Technol Commiss China, Basic Res Div, Chinese Acad Sci, Dept Math & Phys, Natl Nat Sci Fdn China, State Educ Commiss China, Chinese Astron Soc, Nanjing Univ, European So Observatory, Max Planck Fdn Germany, US NASA, Amer Astron Soc, US Natl Sci Fdn, Int Sci Fdn C1 USN,RES LAB,REMOTE SENSING DIV,WASHINGTON,DC 20375. NR 0 TC 7 Z9 7 U1 0 U2 0 PU CAMBRIDGE UNIV PRESS PI CAMBRIDGE PA THE PITT BUILDING, TRUMPINGTON ST, CAMBRIDGE, CAMBS, ENGLAND CB2 1RP BN 0-521-46080-8 J9 IAU COLLOQ PY 1996 VL 145 BP 283 EP 297 PG 15 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA BF21C UT WOS:A1996BF21C00029 ER PT J AU Seitzman, LE Bolster, RN Singer, IL AF Seitzman, LE Bolster, RN Singer, IL TI IBAD MoS2 lubrication of titanium alloys SO SURFACE & COATINGS TECHNOLOGY LA English DT Article DE MOS(2); titanium; solid lubrication ID BEAM-ASSISTED DEPOSITION; MOLYBDENUM-DISULFIDE; BEHAVIOR; COATINGS; FILMS AB MoS2 coatings were deposited by ion-beam-assisted deposition (IBAD) with and without a 30 nm TiN interlayer on Ti, Ti-6Al-4V, and steel substrates and slid in dry air against Ti-6Al-4V and steel under two different contact conditions. Ln the constant load condition, the friction coefficients for coated Ti alloys sliding against Ti ranged from 0.02 to 0.06, while endurance ranged from 30 to 625 krev. The tribological behavior was independent of TiN interlayer and was similar to that for MoS2-coated steel sliding against steel. Shear strength parameters S-0 and alpha of IBAD MoS2 were measured on Ti-6Al-4V by varying the mean hertzian pressure, 0.28 GPa less than or equal to P-H less than or equal to 1.3 GPa; S-0 ranged from 12 to 19 MPa and alpha ranged from 0.005 to 0.021, similar to sputter-deposited MoS2 on steel. At P-H=1.3 GPa, the Ti alloy was loaded beyond its elastic limit, but the 300 nm thick IBAD MoS2 was able to protect the substrate by maintaining integrity and lubricity. RP Seitzman, LE (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. NR 20 TC 14 Z9 15 U1 0 U2 3 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0257-8972 J9 SURF COAT TECH JI Surf. Coat. Technol. PD JAN PY 1996 VL 78 IS 1-3 BP 10 EP 13 DI 10.1016/0257-8972(94)02385-9 PG 4 WC Materials Science, Coatings & Films; Physics, Applied SC Materials Science; Physics GA TT029 UT WOS:A1996TT02900002 ER PT S AU Prokes, SM Carlos, WE AF Prokes, SM Carlos, WE BE Prokes, SM Cammarata, RC Wang, KL Christou, A TI Oxygen related defect center red room temperature photoluminescence in as made and oxidized porous silicon SO SURFACE/INTERFACE AND STRESS EFFECTS IN ELECTRONIC MATERIALS NANOSTRUCTURES SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium on Surface/Interface and Stress Effects in Electronic Material Nanostructures, at the 1995 MRS Fall Meeting CY NOV 27-DEC 01, 1995 CL BOSTON, MA SP Mat Res Soc C1 USN,RES LAB,WASHINGTON,DC 20375. 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 1-55899-308-8 J9 MATER RES SOC SYMP P PY 1996 VL 405 BP 153 EP 158 PG 6 WC Materials Science, Multidisciplinary; Materials Science, Characterization & Testing; Physics, Applied SC Materials Science; Physics GA BG31L UT WOS:A1996BG31L00019 ER PT J AU Gammon, D Snow, ES Katzer, DS AF Gammon, D Snow, ES Katzer, DS TI Naturally formed GaAs quantum dots SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 11th International Conference on the Electronic Properties of 2-Dimensional Systems (EP2DS XI) CY AUG 07-11, 1995 CL UNIV NOTTINGHAM, NOTTINGHAM, ENGLAND SP Int Union Pure & Appl Phys, Commiss European Communities, Engn & Phys Sci Res Council, UK, Hitachi Ltd, Japan, Matsushita Elect Ind Co Ltd, Japan, Sharp Corp, Japan, Toshiba Corp, Japan, USA, European Res Off, USN, Off Naval Res, Hitachi Cambridge Lab, Sharp Labs Europe, Toshiba Cambridge Res Ctr Ltd, Oxford Instruments Ltd, UK, Cryogenic Ltd HO UNIV NOTTINGHAM DE gallium arsenide; photoluminescence; quantum dots; quantum wells; semiconductor-semiconductor heterostructures ID SHARP-LINE PHOTOLUMINESCENCE; WELL STRUCTURES; INTERFACES; EXCITONS AB A photoluminescence study of the excitons localized in the quantum dots naturally formed by interface roughness in narrow GaAs quantum wells is presented. By reducing the number of dots probed in a resonant excitation measurement, we study the spectra of single quantum dots. Extremely narrow linewidths for both the ground and excited states are measured. With such narrow lines it is possible to measure the thermal broadening due to acoustic phonons. RP Gammon, D (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. RI Katzer, D. Scott/N-7841-2013 NR 9 TC 1 Z9 1 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PY 1996 VL 361 IS 1-3 BP 814 EP 817 DI 10.1016/0039-6028(96)00540-7 PG 4 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA UZ033 UT WOS:A1996UZ03300193 ER PT J AU Knipp, PA Pierson, SW Reinecke, TL AF Knipp, PA Pierson, SW Reinecke, TL TI Effects of collective modes on single particle electronic excitations of semiconductor quantum wells and quantum dots SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 11th International Conference on the Electronic Properties of 2-Dimensional Systems (EP2DS XI) CY AUG 07-11, 1995 CL UNIV NOTTINGHAM, NOTTINGHAM, ENGLAND SP Int Union Pure & Appl Phys, Commiss European Communities, Engn & Phys Sci Res Council, UK, Hitachi Ltd, Japan, Matsushita Elect Ind Co Ltd, Japan, Sharp Corp, Japan, Toshiba Corp, Japan, USA, European Res Off, USN, Off Naval Res, Hitachi Cambridge Lab, Sharp Labs Europe, Toshiba Cambridge Res Ctr Ltd, Oxford Instruments Ltd, UK, Cryogenic Ltd HO UNIV NOTTINGHAM DE clusters; copper chloride; gallium arsenide; many body and quasi-particle theories; photoluminescence; quantum effects; quantum wells; semiconductor-semiconductor heterostructures ID NEUTRAL DONORS AB We have studied the interaction of collective excitations with single particle electronic excitations in semiconductor quantum wells and quantum dots, It is found that ''hybrids'' of these excitations are formed, and we calculate their energies. In the case of the quantum wells, one of them is a coupled intersubband plasmon-LO phonon mode which is localized at a neutral donor, and the other is a donor electronic excitation which is ''dressed'' by coupled intersubband plasmon-LO phonon modes. For quantum dots, these excitations are hybrids of LO phonon modes and a transition between different states of an electron confined to the dot. For dots we include both confined and interface phonons. We comment on the comparison of these results with experimental data. C1 USN, RES LAB, WASHINGTON, DC 20375 USA. RP Knipp, PA (reprint author), CHRISTOPHER NEWPORT UNIV, DEPT PHYS & COMP SCI, NEWPORT NEWS, VA 23606 USA. NR 7 TC 2 Z9 2 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PY 1996 VL 361 IS 1-3 BP 818 EP 821 DI 10.1016/0039-6028(96)00541-9 PG 4 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA UZ033 UT WOS:A1996UZ03300194 ER PT J AU Campbell, PM Snow, ES McMarr, PJ AF Campbell, PM Snow, ES McMarr, PJ TI Nanofabrication with proximal probes SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 11th International Conference on the Electronic Properties of 2-Dimensional Systems (EP2DS XI) CY AUG 07-11, 1995 CL UNIV NOTTINGHAM, NOTTINGHAM, ENGLAND SP Int Union Pure & Appl Phys, Commiss European Communities, Engn & Phys Sci Res Council, UK, Hitachi Ltd, Japan, Matsushita Elect Ind Co Ltd, Japan, Sharp Corp, Japan, Toshiba Corp, Japan, USA, European Res Off, USN, Off Naval Res, Hitachi Cambridge Lab, Sharp Labs Europe, Toshiba Cambridge Res Ctr Ltd, Oxford Instruments Ltd, UK, Cryogenic Ltd HO UNIV NOTTINGHAM DE atomic force microscopy; etching; field effect oxidation; semiconducting surfaces; semiconductor-insulator interfaces; silicon; silicon oxides ID ATOMIC-FORCE MICROSCOPE; SCANNING TUNNELING MICROSCOPE; FIELD-EFFECT TRANSISTORS; SI NANOSTRUCTURES; FABRICATION; SILICON AB We report the fabrication of nanometer-scale Si structures using an atomic force microscope. A conducting AFM tip was used to write nanometer-scale oxide patterns by the local anodic oxidation of a passivated Si(100) surface. These oxide patterns were used as masks for selective etching of the silicon to form the completed structures. Side-gated Si field effect transistors with critical features as small as 30 nm have been fabricated by this method. C1 SFA INC, LANDOVER, MD 20785 USA. RP Campbell, PM (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. NR 13 TC 2 Z9 2 U1 1 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PY 1996 VL 361 IS 1-3 BP 870 EP 873 DI 10.1016/0039-6028(96)00553-5 PG 4 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA UZ033 UT WOS:A1996UZ03300206 ER PT J AU Quinn, JJ Quinn, JJ AF Quinn, JJ Quinn, JJ TI Semimetal-semiconductor transition in InAs-GaSb heterostructures SO SURFACE SCIENCE LA English DT Article; Proceedings Paper CT 11th International Conference on the Electronic Properties of 2-Dimensional Systems (EP2DS XI) CY AUG 07-11, 1995 CL UNIV NOTTINGHAM, NOTTINGHAM, ENGLAND SP Int Union Pure & Appl Phys, Commiss European Communities, Engn & Phys Sci Res Council, UK, Hitachi Ltd, Japan, Matsushita Elect Ind Co Ltd, Japan, Sharp Corp, Japan, Toshiba Corp, Japan, USA, European Res Off, USN, Off Naval Res, Hitachi Cambridge Lab, Sharp Labs Europe, Toshiba Cambridge Res Ctr Ltd, Oxford Instruments Ltd, UK, Cryogenic Ltd HO UNIV NOTTINGHAM DE antimony; arsenic; gallium; gallium selenide; indium; indium arsenide; quantum effects; quantum wells; semiconductor-semiconductor heterostructures; semi-empirical models and model calculations AB In a heterostructure consisting of neighboring layers of InAs and GaSb in a large band-gap host like AlSb, the bottom of the InAs conduction band lies similar to 150 meV below the top of the GaSb valence band, However, because the electron and hole subbands are weakly coupled for non-zero values of the wavevector k(1) along the layer, an anticrossing of the levels occurs at k(1) =k(c), where k(c)(2) = (2 mu/h(2)) (Delta l-epsilon(0)(v)-epsilon(0)(c)) Herz Delta is the band overlap, epsilon(0)(c) and epsilon(0)(v) are the lowest electron and hole subband energies, and mu is the reduced mass. The splitting is in the order of 5-10 meV. For an intrinsic material, the Fermi level lies in this gap, so that no semimetallic state occurs. If the InAs layers are sufficiently wide, or if an electric field can be applied across the heterostructure (by fabricating front and back gates) it is possible to have the first excited electron subband EP realize an anticrossing with epsilon(o)(v) as well. Then a true semimetallic state can occur with a circle of electrons in the epsilon(1)(c) subband near k(1) = 0, and a ring of holes near the anticrossing in the hybridized valence subband. A semimetal-to-semiconductor transition should occur, which is driven by shifting the single-particle subband energies with an applied electric or magnetic field. C1 UNIV TENNESSEE, KNOXVILLE, TN 37996 USA. USN, RES LAB, WASHINGTON, DC 20375 USA. RP Quinn, JJ (reprint author), OCCIDENTAL COLL, LOS ANGELES, CA 90041 USA. NR 6 TC 12 Z9 12 U1 1 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0039-6028 J9 SURF SCI JI Surf. Sci. PY 1996 VL 361 IS 1-3 BP 930 EP 932 DI 10.1016/0039-6028(96)00567-5 PG 3 WC Chemistry, Physical; Physics, Condensed Matter SC Chemistry; Physics GA UZ033 UT WOS:A1996UZ03300220 ER PT B AU Kemner, KM Hunter, DB Elam, WT Bertsch, PM AF Kemner, KM Hunter, DB Elam, WT Bertsch, PM BE DAmico, KL Terminello, LJ Shuh, DK TI Cesium XAFS studies of solution phase Cs-ionophore complexation SO SYNCHROTRON RADIATION TECHNIQUES IN INDUSTRIAL, CHEMICAL AND MATERIALS SCIENCE LA English DT Proceedings Paper CT Symposium on Applications of Synchrotron Research to Materials Science, at the 1994 Fall National Meeting of the American-Chemical-Society CY AUG 21-23, 1994 CL WASHINGTON, DC SP Amer Chem Soc AB X-ray absorption fine structure (XAFS) measurements have been made at the Cs Lm absorption edge on 1) 0.04 M concentrations of CsBr in 0.04 M Dibenzo-18-Crown-6 ethers (D18C6) in acetonitrile solution, and 2) crystalline CsBr, CsCl and CsF powders that were used as standards. Due to the many difficulties associated with obtaining high quality XAFS data on these systems, a custom-manufactured 5 mil thick Sc foil was used in conjunction with a Seller slit assembly to improve the XAFS signal to noise ratio by almost a factor of 6. XAFS analyses of the Cs-D18C6 solution show the presence of a 1:1 Cs-D18C6 complex with the Br counter-ion still in contact with the Cs atom. These results are consistent with previous wet chemical studies. The choice of a heavy backscattering Br anion reduces the error in determining the presence of a single backscattering counter ion among the lighter backscattering oxygen and carbon atoms of the crown ether complex. The ability of XAFS to directly probe the anion contact pairing to Cs complexed to a macrocycle opens many exciting avenues for improving extraction methodologies. RP Kemner, KM (reprint author), USN,RES LAB,CODE 6685,4555 OVERLOOK AVE,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45389-4 PY 1996 BP 149 EP 158 PG 10 WC Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter SC Physics GA BH02M UT WOS:A1996BH02M00010 ER PT B AU Chakarian, V Idzerda, YU Chen, CT Meigs, G Kao, CC AF Chakarian, V Idzerda, YU Chen, CT Meigs, G Kao, CC BE DAmico, KL Terminello, LJ Shuh, DK TI Studies of magnetic materials with circular polarized soft X-rays SO SYNCHROTRON RADIATION TECHNIQUES IN INDUSTRIAL, CHEMICAL AND MATERIALS SCIENCE LA English DT Proceedings Paper CT Symposium on Applications of Synchrotron Research to Materials Science, at the 1994 Fall National Meeting of the American-Chemical-Society CY AUG 21-23, 1994 CL WASHINGTON, DC SP Amer Chem Soc RP Chakarian, V (reprint author), USN,RES LAB,CODE 6345,WASHINGTON,DC 20375, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU PLENUM PRESS DIV PLENUM PUBLISHING CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 BN 0-306-45389-4 PY 1996 BP 187 EP 205 PG 19 WC Physics, Atomic, Molecular & Chemical; Physics, Condensed Matter SC Physics GA BH02M UT WOS:A1996BH02M00013 ER PT B AU Chow, GM Markowitz, M Singh, A AF Chow, GM Markowitz, M Singh, A BE Bourell, DL TI Nanostructured metal particles synthesis via self-assembled membranes SO SYNTHESIS AND PROCESSING OF NANOCRYSTALLINE POWDER LA English DT Proceedings Paper CT Symposium on Synthesis and Processing of Nanocrystalline Powder, at the Annual Meeting of the Minerals-Metals-and-Materials-Society CY FEB 04-08, 1996 CL ANAHEIM, CA SP Minerals Met & Mat Soc, Mat Design & Mfg Div, Powder Met Comm, Federat European Mat Soc C1 USN,RES LAB,CTR BIOMOL SCI & ENGN,LAB MOL INTERFACIAL INTERACT,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-315-5 PY 1996 BP 47 EP 56 PG 10 WC Engineering, Chemical; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BG03C UT WOS:A1996BG03C00004 ER PT B AU Holtz, RL Imam, MA AF Holtz, RL Imam, MA BE WardClose, CM Froes, FH Cho, SS Chellman, DJ TI Hydrogen storage characteristics of magnesium-nickel and magnesium-iron alloys SO SYNTHESIS/PROCESSING OF LIGHTWEIGHT METALLIC MATERIALS II LA English DT Proceedings Paper CT Symposium on Synthesis/Processing of Lightweight Metallic Materials II, at the TMS Annual Meeting CY FEB 09-13, 1997 CL ORLANDO, FL SP ASM Int, Mat Synthesis & Proc Comm, Minerals Met & Mat Soc, Mat Design & Mfg Div, Synthesis Control & Anal Mat Proc Comm AB Of potential hydrogen storage materials, pure magnesium would be best from the standpoint of hydrogen capacity per unit mass. However, pure magnesium has poor hydriding kinetics. Alloying magnesium with nickel and other transition metals aids catalysis of the hydrogen dissociative chemisorption and yields other benefits by lowering the dehydrogenation temperature, although at the expense of decreased storage capacity. We have prepared magnesium-nickel and magnesium-iron alloys by ball-milling and report here that alloying addition of about one percent nickel yields the most significant improvements. C1 USN, Res Lab, Div Mat Sci & Technol, Washington, DC 20375 USA. RP Holtz, RL (reprint author), USN, Res Lab, Div Mat Sci & Technol, Code 6323, Washington, DC 20375 USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-360-0 PY 1996 BP 313 EP 320 PG 8 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA BK36H UT WOS:000071901600031 ER PT B AU Wilcoxen, B Heckathorn, H AF Wilcoxen, B Heckathorn, H BE Watkins, WR Clement, D TI Synthetic scene generation model (SSGM R7.0) SO TARGETS AND BACKGROUNDS: CHARACTERIZATION AND REPRESENTATION II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Targets and Backgrounds - Characterization and Representation II CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE phenomenology; scene generation; sensor simulation; target and background signatures; Ballistic Missile Defense Organization (BMDO); Theater Missile Defense (TMD); Modeling and Simulation (M&S) C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 2 Z9 2 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2123-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2742 BP 57 EP 68 DI 10.1117/12.243028 PG 12 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BG12B UT WOS:A1996BG12B00006 ER PT B AU Dorland, BN Snyder, WA Armoza, D Conger, S Conklin, D AF Dorland, BN Snyder, WA Armoza, D Conger, S Conklin, D BE Watkins, WR Clement, D TI Creating a ''Virtual BMDO Data Center'': Integrating catalogs, archives and phenomenology resources via the World Wide Web SO TARGETS AND BACKGROUNDS: CHARACTERIZATION AND REPRESENTATION II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Targets and Backgrounds - Characterization and Representation II CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE BMDO; Data Centers; phenomenology; modeling; World-Wide-Web; databases; Java; VRML; measured data; synthetic data C1 USN,RES LAB,DIV SPACE SCI,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2123-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2742 BP 177 EP 186 DI 10.1117/12.242994 PG 10 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BG12B UT WOS:A1996BG12B00017 ER PT B AU Wagstaff, RA AF Wagstaff, RA BE Watkins, WR Clement, D TI Exploitation of fluctuations to enhance target detection and to reduce clutter and background noise in the marine environment SO TARGETS AND BACKGROUNDS: CHARACTERIZATION AND REPRESENTATION II SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Targets and Backgrounds - Characterization and Representation II CY APR 08-10, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE enhanced detection; fluctuation exploitation; clutter reduction; signal-to-noise ratio enhancement C1 USN,RES LAB,BAY ST LOUIS,MS 39529. NR 0 TC 3 Z9 3 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2123-5 J9 P SOC PHOTO-OPT INS PY 1996 VL 2742 BP 276 EP 283 DI 10.1117/12.243005 PG 8 WC Engineering, Aerospace; Remote Sensing; Optics SC Engineering; Remote Sensing; Optics GA BG12B UT WOS:A1996BG12B00027 ER PT B AU Bailey, M Doerr, J AF Bailey, M Doerr, J BE Murrer, RL TI Contributions of hardware-in-the-loop simulations to Navy test and evaluation SO TECHNOLOGIES FOR SYNTHETIC ENVIRONMENTS: HARDWARE-IN-THE-LOOP TESTING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Technologies for Synthetic Environments - Hardware-in-the-Loop Testing CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE hardware-in-the-loop; IR scene; simulation; virtual; testing C1 USN,CTR WEAP,RANGE ARCHITECTURE OFF,AIR WARFARE CTR,CHINA LAKE,CA 93555. 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 0-8194-2122-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2741 BP 33 EP 43 DI 10.1117/12.241122 PG 11 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BF87F UT WOS:A1996BF87F00004 ER PT B AU Dalbey, RZ AF Dalbey, RZ BE Murrer, RL TI Fiber optic based infrared scene projector SO TECHNOLOGIES FOR SYNTHETIC ENVIRONMENTS: HARDWARE-IN-THE-LOOP TESTING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Technologies for Synthetic Environments - Hardware-in-the-Loop Testing CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE infrared scene projection; infrared scene simulation; infrared optical design; black body cavity design C1 USN,AIR WARFARE CTR,WEAPONS DIV,MAT ENGN SECT CODE 474210D,CHINA LAKE,CA 93555. 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 0-8194-2122-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2741 BP 142 EP 149 DI 10.1117/12.241124 PG 8 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BF87F UT WOS:A1996BF87F00012 ER PT B AU Heckathorn, H Popp, B Smith, W Conklin, D Newman, DA Wieland, F AF Heckathorn, H Popp, B Smith, W Conklin, D Newman, DA Wieland, F BE Murrer, RL TI SSGM: From serial to parallel processing using PVM SO TECHNOLOGIES FOR SYNTHETIC ENVIRONMENTS: HARDWARE-IN-THE-LOOP TESTING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Technologies for Synthetic Environments - Hardware-in-the-Loop Testing CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE SSGM; HWIL; PVM; BMDO; scene generation; phenomenology; physics-based simulation C1 USN,RES LAB,DIV SPACE SCI,WASHINGTON,DC 20375. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2122-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2741 BP 267 EP 277 DI 10.1117/12.241105 PG 11 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BF87F UT WOS:A1996BF87F00025 ER PT B AU Amundson, PH AF Amundson, PH BE Murrer, RL TI One aspect of Multi-Spectral Scene Projection (MSSG) - Radar-infrared scene combination for use in hardware-in-the-loop simulation test facilities SO TECHNOLOGIES FOR SYNTHETIC ENVIRONMENTS: HARDWARE-IN-THE-LOOP TESTING SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Technologies for Synthetic Environments - Hardware-in-the-Loop Testing CY APR 09-11, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE beam combiners; broadband infrared; radio frequency; millimeter wave; hardware-in-the-loop; scene projection C1 USN,AIR WARFARE CTR,WEAP DIV,CHINA LAKE,CA 93555. NR 0 TC 0 Z9 0 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2122-7 J9 P SOC PHOTO-OPT INS PY 1996 VL 2741 BP 347 EP 353 DI 10.1117/12.241111 PG 7 WC Engineering, Aerospace; Optics SC Engineering; Optics GA BF87F UT WOS:A1996BF87F00031 ER PT S AU Portanova, MA AF Portanova, MA BE Hoggatt, JT Falcone, A Nelson, KM Hill, SG TI Impact damage tolerance of textile composites SO TECHNOLOGY TRANSFER IN A GLOBAL COMMUNITY SE INTERNATIONAL SAMPE TECHNICAL CONFERENCE SERIES LA English DT Proceedings Paper CT 28th International SAMPE Technical Conference on Technology Transfer in a Global Community CY NOV 04-07, 1996 CL SEATTLE, WA SP Soc Adv Mat & Proc Engn DE damage tolerance; textile composites; impact damage AB To fully exploit the weight saving benefits associated with graphite/epoxy composite materials there is a need to improve the damage tolerance of these materials. Composites made from textile preforms have the potential of offering the increased damage tolerance needed for application to today's advanced aero-structures. Their are various forms of textile composites, each differing not only in architecture but in the benefits associated from their design. These textile composites vary from simple stitched uni-woven laminates to complex 3-dimensionally braided or woven architectures. This report summarized the results from a series of experiments intended to characterize the response of these materials to impact damage. Stitched and non-stitched uniweaves; 2-D braids, and 3-D weaves were evaluated. All of the specimens were subjected to either falling weight or quasi-static impacts and then loaded in tension or compression to failure to measure residual strength. The ratio of damaged to undamaged strength was used to evaluate their damage tolerance. RP Portanova, MA (reprint author), USN,AIR WARFARE CTR AIRCRAFT,PATUXENT RIVER,MD, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 SN 0892-2624 BN 0-938994-76-X J9 INT SAMPE TECH CONF PY 1996 VL 28 BP 351 EP 362 PG 4 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BH03N UT WOS:A1996BH03N00032 ER PT S AU Stephens, T Blanchard, DG AF Stephens, T Blanchard, DG BE Hoggatt, JT Falcone, A Nelson, KM Hill, SG TI Thermal stress in rapidly heated graphite/epoxy composites SO TECHNOLOGY TRANSFER IN A GLOBAL COMMUNITY SE INTERNATIONAL SAMPE TECHNICAL CONFERENCE SERIES LA English DT Proceedings Paper CT 28th International SAMPE Technical Conference on Technology Transfer in a Global Community CY NOV 04-07, 1996 CL SEATTLE, WA SP Soc Adv Mat & Proc Engn DE heat transfer; modeling; dimensional stability AB This paper describes testing and modeling to demonstrate the predictability of temperature and stress profiles in rapidly heated composite parts. Unidirectional filament wound, graphite/epoxy composite coupons were subjected to rapid heating from one side, while surface temperatures and deflections were measured. From the surface temperatures and thermal properties, the internal temperature profiles were calculated. An analytical model was used to predict the stresses and strains in the coupon and the curvature of the coupon during the transient heating and subsequent cooling. RP Stephens, T (reprint author), USN,AIR WARFARE CTR,WEAPONS DIV,CHINA LAKE,CA 93555, USA. NR 0 TC 0 Z9 0 U1 0 U2 2 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 SN 0892-2624 BN 0-938994-76-X J9 INT SAMPE TECH CONF PY 1996 VL 28 BP 574 EP 585 PG 2 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BH03N UT WOS:A1996BH03N00052 ER PT S AU Arnold, FE Thoman, S AF Arnold, FE Thoman, S BE Hoggatt, JT Falcone, A Nelson, KM Hill, SG TI B-staging of toughened epoxy composites SO TECHNOLOGY TRANSFER IN A GLOBAL COMMUNITY SE INTERNATIONAL SAMPE TECHNICAL CONFERENCE SERIES LA English DT Proceedings Paper CT 28th International SAMPE Technical Conference on Technology Transfer in a Global Community CY NOV 04-07, 1996 CL SEATTLE, WA SP Soc Adv Mat & Proc Engn DE modulated differential scanning calorimetry (MDSC); Hercules 8552 resin; activation energy; b-staging AB B-staging as an alternative processing scheme for toughened epoxy composites is presently being explored. The objective is to eliminate the effect of room temperature advancement as well as reduce interlaminar stresses during processing, and promote the proper conditions for adhesion of new material to the composite. Modulated differential scanning calorimetry (MDSC) and dynamic mechanical analysis (DMA) were utilized to characterize cure behavior and vitrification temperatures. Subambient Tgs were measured on specimens exposed to a temperature of 23 degrees C for approximately 90 days. Significant advancement starts to occur after eighteen days and levels off at a glass transition temperature of 44 degrees C. Specimens staged to glass transition temperatures above 50 degrees C shaw negligible advancement at room temperature. Hercules 8552 neat resin gels at a conversion of 0.43 measured by differential scanning calorimetry and dynamic mechanical analysis. A time temperature transformation diagram [1,2] was generated for conversions of less than 0.50. Two assumptions for calculating the isothermal cure diagrams were, the reaction prior to vitrification is kinetically controlled and there is a one to one relationship between the glass transition temperature and degree of conversion. An activation energy of 69.9 kJ/mol was calculated for the reaction. RP Arnold, FE (reprint author), USN,AIR WARFARE CTR,DIV AIRCRAFT,POLYMERS & COMPOSITES BRANCH,PATUXENT RIVER,MD 20670, USA. NR 0 TC 0 Z9 0 U1 1 U2 5 PU SOC ADVANCEMENT MATERIAL & PROCESS ENGINEERING PI COVINA PA 843 W GLENTANA ST, PO BOX 2459, COVINA, CA 91722 SN 0892-2624 BN 0-938994-76-X J9 INT SAMPE TECH CONF PY 1996 VL 28 BP 1290 EP 1299 PG 2 WC Engineering, Multidisciplinary; Materials Science, Multidisciplinary SC Engineering; Materials Science GA BH03N UT WOS:A1996BH03N00121 ER PT J AU Schneidewind, NF AF Schneidewind, NF TI A fine-grained Ethernet performance model SO TELECOMMUNICATION SYSTEMS LA English DT Article ID LOCAL-AREA NETWORKS AB We have developed a novel analytical Ethernet performance model that contains a complete formulation of system response time from the initiation of user requests for service to the delivery of the service to the user. The estimated response time includes simultaneous input bus delay (requests for service from multiple users), simultaneous output delay (responses to requests from multiple servers), considering time lost to collisions and subsequent backoff time, time lost to deferring transmission due to a busy channel, and transmission time. In addition, we include server disk input and output queueing times and server and user disk access times. By modeling all epochs of collision, backoff, and transmission events, we have developed a way of providing a level of detail and accuracy that other analytic models of Ethernet performance do not provide. In addition to using the model for estimating response time as a function of number of users and servers, the model is used to determine the number of servers that would be appropriate for a given range of number of users. RP Schneidewind, NF (reprint author), USN,POSTGRAD SCH,CODE SM SS,MONTEREY,CA 93943, USA. NR 15 TC 1 Z9 1 U1 0 U2 0 PU BALTZER SCI PUBL BV PI AMSTERDAM PA ASTERWEG 1A, 1031 HL AMSTERDAM, NETHERLANDS SN 1018-4864 J9 TELECOMMUN SYST JI Telecommun. Syst. PY 1996 VL 6 IS 1 BP 77 EP 90 DI 10.1007/BF02114287 PG 14 WC Telecommunications SC Telecommunications GA VJ414 UT WOS:A1996VJ41400006 ER PT B AU Gershenson, M AF Gershenson, M BE Burleigh, DD Spicer, JWM TI Imaging through the diffusion equation SO THERMOSENSE XVIII: AN INTERNATIONAL CONFERENCE ON THERMAL SENSING AND IMAGING DIAGNOSTIC APPLICATIONS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT International Conference on Thermal Sensing and Imaging Diagnostic Applications - Thermosense XVIII CY APR 10-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE imaging; diffusion; Thermal Wave C1 USN,COASTAL SYST STN,DAHLGREN DIV,CTR SURFAC WARFARE,PANAMA CITY,FL 32407. 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 0-8194-2147-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2766 BP 258 EP 263 DI 10.1117/12.235383 PG 6 WC Construction & Building Technology; Engineering, Multidisciplinary; Instruments & Instrumentation; Optics SC Construction & Building Technology; Engineering; Instruments & Instrumentation; Optics GA BF31V UT WOS:A1996BF31V00029 ER PT S AU Conklin, JA Cotell, CM Barnett, TW Hansen, DC AF Conklin, JA Cotell, CM Barnett, TW Hansen, DC BE Cotell, CM Meyer, AE Gorbatkin, SM Grobe, GL TI Pulsed laser deposition of collagen thin films SO THIN FILMS AND SURFACES FOR BIOACTIVITY AND BIOMEDICAL APPLICATIONS SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium Z, Thin Films and Surfaces for Bioactivity and Biomedical Applications, at the 1995 MRS Fall Meeting CY NOV 28-29, 1995 CL BOSTON, MA SP Mat Res Soc C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-317-7 J9 MATER RES SOC SYMP P PY 1996 VL 414 BP 65 EP 70 PG 6 WC Materials Science, Biomaterials; Materials Science, Coatings & Films SC Materials Science GA BG25Z UT WOS:A1996BG25Z00010 ER PT S AU Cotell, CM Conklin, JA Auyeung, RCY Wong, SS Klapperich, CM Spector, M AF Cotell, CM Conklin, JA Auyeung, RCY Wong, SS Klapperich, CM Spector, M BE Cotell, CM Meyer, AE Gorbatkin, SM Grobe, GL TI In vivo evaluation of pulsed laser deposited hydroxyapatite coating for prosthesis-bone bonding SO THIN FILMS AND SURFACES FOR BIOACTIVITY AND BIOMEDICAL APPLICATIONS SE MATERIALS RESEARCH SOCIETY SYMPOSIUM PROCEEDINGS LA English DT Proceedings Paper CT Symposium Z, Thin Films and Surfaces for Bioactivity and Biomedical Applications, at the 1995 MRS Fall Meeting CY NOV 28-29, 1995 CL BOSTON, MA SP Mat Res Soc C1 USN,RES LAB,WASHINGTON,DC 20375. OI Klapperich, Catherine /0000-0001-6103-849X NR 0 TC 6 Z9 6 U1 0 U2 0 PU MATERIALS RESEARCH SOC PI PITTSBURGH PA 9800 MCKNIGHT RD, SUITE 327, PITTSBURGH, PA 15237 SN 0272-9172 BN 1-55899-317-7 J9 MATER RES SOC SYMP P PY 1996 VL 414 BP 171 EP 176 PG 6 WC Materials Science, Biomaterials; Materials Science, Coatings & Films SC Materials Science GA BG25Z UT WOS:A1996BG25Z00025 ER PT B AU Ting, RY AF Ting, RY BE Gobin, PR Tatibouet, J TI Sensor and actuator applications of piezocomposite materials in large smart structures SO THIRD INTERNATIONAL CONFERENCE ON INTELLIGENT MATERIALS - THIRD EUROPEAN CONFERENCE ON SMART STRUCTURES AND MATERIALS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 3rd International Conference on Intelligent Materials/3rd European Conference on Smart Structures and Materials CY JUN 03-05, 1996 CL LYON, FRANCE SP European Commiss DG XII C, Ind & Mat Technol, Soc Non Tradit Technol, Intelligent Mat Forum, Japan, CNRS, DIMAT, France, Direction Rech & Technol, DGA, France, USA, European Res Off, Reg Rhone Alpes, Conseil Gen Rhone, Ville Lyon, Ville Villeurbanne, Soc Aerospatiale, Co St Gobain, Soc Thomson CSF, CIBA Composites Brochier, Assoc Materiaux Composites, Mat Informat Soc, European Mat Res Soc, Grp Francais Etudes & Applicat Polymeres, Inst Elect Engineers, Inst Measurement & Control, Inst Mech Engineers, Royal Aeronaut Soc, Soc Francaise Phys, Soc Francaise Met & Materiaux, Soc Non Tradit Technol, Soc Photo Opt Instrumentat Engineers, INSA Lyon C1 USN,UNDERSEA WARFARE CTR,DIV NEWPORT,UNDERWATER SOUND REFERENCE DETACHMENT,ORLANDO,FL 32856. 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 0-8194-2165-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2779 BP 548 EP 559 DI 10.1117/12.237177 PG 12 WC Materials Science, Multidisciplinary; Materials Science, Biomaterials; Optics SC Materials Science; Optics GA BF54B UT WOS:A1996BF54B00090 ER PT B AU Corsaro, RD Klunder, JD AF Corsaro, RD Klunder, JD BE Gobin, PR Tatibouet, J TI Go-formed accelerometer - Actuator composites using injection molded PZT SO THIRD INTERNATIONAL CONFERENCE ON INTELLIGENT MATERIALS - THIRD EUROPEAN CONFERENCE ON SMART STRUCTURES AND MATERIALS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 3rd International Conference on Intelligent Materials/3rd European Conference on Smart Structures and Materials CY JUN 03-05, 1996 CL LYON, FRANCE SP European Commiss DG XII C, Ind & Mat Technol, Soc Non Tradit Technol, Intelligent Mat Forum, Japan, CNRS, DIMAT, France, Direction Rech & Technol, DGA, France, USA, European Res Off, Reg Rhone Alpes, Conseil Gen Rhone, Ville Lyon, Ville Villeurbanne, Soc Aerospatiale, Co St Gobain, Soc Thomson CSF, CIBA Composites Brochier, Assoc Materiaux Composites, Mat Informat Soc, European Mat Res Soc, Grp Francais Etudes & Applicat Polymeres, Inst Elect Engineers, Inst Measurement & Control, Inst Mech Engineers, Royal Aeronaut Soc, Soc Francaise Phys, Soc Francaise Met & Materiaux, Soc Non Tradit Technol, Soc Photo Opt Instrumentat Engineers, INSA Lyon C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-8194-2165-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2779 BP 570 EP 574 DI 10.1117/12.237180 PG 5 WC Materials Science, Multidisciplinary; Materials Science, Biomaterials; Optics SC Materials Science; Optics GA BF54B UT WOS:A1996BF54B00093 ER PT B AU Corsaro, RD Houston, B AF Corsaro, RD Houston, B BE Gobin, PR Tatibouet, J TI Sensor - Actuator panels for underwater acoustic control SO THIRD INTERNATIONAL CONFERENCE ON INTELLIGENT MATERIALS - THIRD EUROPEAN CONFERENCE ON SMART STRUCTURES AND MATERIALS SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 3rd International Conference on Intelligent Materials/3rd European Conference on Smart Structures and Materials CY JUN 03-05, 1996 CL LYON, FRANCE SP European Commiss DG XII C, Ind & Mat Technol, Soc Non Tradit Technol, Intelligent Mat Forum, Japan, CNRS, DIMAT, France, Direction Rech & Technol, DGA, France, USA, European Res Off, Reg Rhone Alpes, Conseil Gen Rhone, Ville Lyon, Ville Villeurbanne, Soc Aerospatiale, Co St Gobain, Soc Thomson CSF, CIBA Composites Brochier, Assoc Materiaux Composites, Mat Informat Soc, European Mat Res Soc, Grp Francais Etudes & Applicat Polymeres, Inst Elect Engineers, Inst Measurement & Control, Inst Mech Engineers, Royal Aeronaut Soc, Soc Francaise Phys, Soc Francaise Met & Materiaux, Soc Non Tradit Technol, Soc Photo Opt Instrumentat Engineers, INSA Lyon C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-8194-2165-0 J9 P SOC PHOTO-OPT INS PY 1996 VL 2779 BP 598 EP 602 DI 10.1117/12.237185 PG 5 WC Materials Science, Multidisciplinary; Materials Science, Biomaterials; Optics SC Materials Science; Optics GA BF54B UT WOS:A1996BF54B00098 ER PT J AU Ng, J Hurley, CK Carter, C BaxterLowe, LA Bing, D Chopek, M Hegland, J Lee, TD Li, TC Hsu, S KuKuruga, D Mason, JM Monos, D Noreen, H Rosner, G Schmeckpeper, B Dupont, B Hartzman, RJ AF Ng, J Hurley, CK Carter, C BaxterLowe, LA Bing, D Chopek, M Hegland, J Lee, TD Li, TC Hsu, S KuKuruga, D Mason, JM Monos, D Noreen, H Rosner, G Schmeckpeper, B Dupont, B Hartzman, RJ TI Large-scale DRB and DQB1 oligonucleotide typing for the NMDP registry: Progress report from year 2 SO TISSUE ANTIGENS LA English DT Article DE HLA-DR; HLA-DQ; polymerase chain reaction; sequence-specific; oligonucleotide typing AB DNA typing of HLA class II alleles of the DRB1/3/4/5 and DQB1 loci using sequence-specific oligonucleotide probes and polymerase chain reaction amplified DNA has been used for the large-scale typing of donors for the National Marrow Donor Program unrelated donor registry. The results of quality control analysis for the second year of the project (10/1/939/ 30/94) show the typing continues to be highly accurate, specific, and reliable. The average percent of correctly classified HLA oligotypes (groups of alleles defined by a hybridization pattern with a panel of sequence-specific oligonucleotide probes) based on 9,244 DRB1 and 7,244 DQB1 assignments was 99.8% (range 99.4%100.0%) for DRB1/DRB3/DRB4/DRB5 and 99.8% (range 99.6%100.0%) for DQB1. This level of accuracy is particularly remarkable because the 4,636 DRB quality control samples were tested blindly and could not be distinguished from 57,580 donor samples tested at the same time by the laboratories. C1 GEORGETOWN UNIV,DEPT PEDIAT,WASHINGTON,DC 20057. GEORGETOWN UNIV,DEPT MICROBIOL & IMMUNOL,WASHINGTON,DC. BLOOD CTR SE WISCONSIN INC,MILWAUKEE,WI. CBR LABS INC,BOSTON,MA. AMER RED CROSS,DEDHAM,MA. NATL MARROW DONOR PROGRAM,MINNEAPOLIS,MN. AMER RED CROSS,ROCKVILLE,MD. CLEVELAND CLIN FDN,TISSUE TYPING LAB,CLEVELAND,OH 44195. AMER RED CROSS,PHILADELPHIA,PA. WAYNE STATE UNIV,DEPT PATHOL,DETROIT,MI 48202. LAB CORP AMER,BURLINGTON,NC. UNIV PENN,MED CTR,DEPT PATHOL & LAB MED,PHILADELPHIA,PA 19104. UNIV MINNESOTA,IMMUNOL HISTOCOMPATIBIL LAB,MINNEAPOLIS,MN 55455. UNIV PITTSBURGH,MED CTR,PITTSBURGH,PA. JOHNS HOPKINS UNIV,IMMUNOGENET LABS,BALTIMORE,MD. MEM SLOAN KETTERING CANC CTR,IMMUNOGENET LABS,NEW YORK,NY 10021. RP Ng, J (reprint author), USN,MED RES INST,8901 WISCONSIN AVE,MAILSTOP 36,BETHESDA,MD 20889, USA. NR 6 TC 33 Z9 33 U1 0 U2 1 PU MUNKSGAARD INT PUBL LTD PI COPENHAGEN PA 35 NORRE SOGADE, PO BOX 2148, DK-1016 COPENHAGEN, DENMARK SN 0001-2815 J9 TISSUE ANTIGENS JI Tissue Antigens PD JAN PY 1996 VL 47 IS 1 BP 21 EP 26 DI 10.1111/j.1399-0039.1996.tb02510.x PG 6 WC Cell Biology; Immunology; Pathology SC Cell Biology; Immunology; Pathology GA TU850 UT WOS:A1996TU85000002 PM 8929709 ER PT B AU Pratt, DR Almquist, MS AF Pratt, DR Almquist, MS BE Gerson, DJ TI Factors affecting scalability of distributed interactive simulations SO TOOLS AND TECHNIQUES FOR MODELING AND SIMULATION, 24TH AIPR WORKSHOP SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 24th AIPR Workshop on Tools and Techniques for Modeling and Simulation CY OCT 11-13, 1995 CL WASHINGTON, DC SP Soc Photo Opt Instrumentat Engineers, AIPR Execut Comm C1 USN,POSTGRAD SCH,DEPT COMP SCI,MONTEREY,CA 93943. 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 0-8194-2018-2 J9 P SOC PHOTO-OPT INS PY 1996 VL 2645 BP 211 EP 214 DI 10.1117/12.233067 PG 4 WC Optics SC Optics GA BF18T UT WOS:A1996BF18T00022 ER PT B AU Whinnery, JE AF Whinnery, JE BE Hameroff, SR Kaszniak, AW Scott, AC TI Induction of consciousness in the ischemic brain SO TOWARD A SCIENCE OF CONSCIOUSNESS: THE FIRST TUCSON DISCUSSIONS AND DEBATES SE COMPLEX ADAPTIVE SYSTEMS LA English DT Proceedings Paper CT International Conference on Toward a Scientific Basis for Consciousness CY APR, 1994 CL UNIV ARIZONA, TUCSON, AZ HO UNIV ARIZONA C1 USN,AIR WARFARE CTR,WARMINSTER,PA 18974. NR 0 TC 0 Z9 0 U1 0 U2 0 PU M I T PRESS PI CAMBRIDGE PA 55 HAYWARD ST, CAMBRIDGE, MA 02142 BN 0-262-08249-7 J9 COM ADAP SY PY 1996 BP 169 EP 187 PG 19 WC Psychology, Biological; Computer Science, Artificial Intelligence; Medicine, Research & Experimental; Multidisciplinary Sciences; Neurosciences; Philosophy; Psychology; Psychology, Experimental SC Psychology; Computer Science; Research & Experimental Medicine; Science & Technology - Other Topics; Neurosciences & Neurology; Philosophy GA BF38N UT WOS:A1996BF38N00011 ER PT B AU Batra, NK Simmonds, KE Mignogna, RB AF Batra, NK Simmonds, KE Mignogna, RB BE Nair, CGK Raj, B Nurthy, CRL Jayakumar, T TI Determination of elastic constants of anisotropic materials from propagation of ultrasonic waves along arbitrary symmetry directions SO TRENDS IN NDE SCIENCE AND TECHNOLOGY - PROCEEDINGS OF THE 14TH WORLD CONFERENCE ON NDT (14TH WCNDT), VOLS 1-5 LA English DT Proceedings Paper CT 14th World Conference on NDT - Trends in NDE Science and Technology (14th WCNDT) CY DEC 08-13, 1996 CL NEW DELHI, INDIA SP Int Comm NDT, Indian Soc Non Destruct Testing AB To assess the structural integrity of an anisotropic critical component, we need to monitor nondestructively all of the elastic constants of the material. We present a methodology to determine a complete set of elastic constants of a given anisotropic material using a single specimen by measuring the time-of-flight tron of an ultrasonic wave through a specimen immersed in a fluid, corresponding direction cosines and mass density and calculating the phase velocities in the anisotropic material. Using these values with an inversion routine for a general analytic solution of the Christoffel Equation for wave propagation in an elastic material, we can determine all the elastic constants of the material under test. RP Batra, NK (reprint author), USN,RES LAB,MECH MAT BRANCH,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU A A BALKEMA PI ROTTERDAM PA PO BOX 1675, 3000 BR ROTTERDAM, NETHERLANDS BN 90-5410-740-5 PY 1996 BP 2275 EP 2278 PG 4 WC Materials Science, Characterization & Testing SC Materials Science GA BH40Q UT WOS:A1996BH40Q00483 ER PT B AU Matteson, MA Franke, GL Vassilaros, MG AF Matteson, MA Franke, GL Vassilaros, MG BE Smartt, HB Johnson, JA David, SA TI A simple 2-D thermal model for GMA welds SO TRENDS IN WELDING RESEARCH LA English DT Proceedings Paper CT 4th International Conference on Trends in Welding Research CY JUN 05-08, 1995 CL GATLINBURG, TN SP ASM Int, Amer Welding Soc C1 NAVAL SURFACE WARFACE CTR,ANNAPOLIS,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 BN 0-87170-567-2 PY 1996 BP 39 EP 43 PG 5 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BG22Y UT WOS:A1996BG22Y00006 ER PT B AU Lambrakos, SG Milewski, JO AF Lambrakos, SG Milewski, JO BE Smartt, HB Johnson, JA David, SA TI Simulation of deep penetration welding of stainless steel using geometric constraints based on experimental information SO TRENDS IN WELDING RESEARCH LA English DT Proceedings Paper CT 4th International Conference on Trends in Welding Research CY JUN 05-08, 1995 CL GATLINBURG, TN SP ASM Int, Amer Welding Soc C1 USN,RES LAB,WASHINGTON,DC. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 BN 0-87170-567-2 PY 1996 BP 45 EP 50 PG 6 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BG22Y UT WOS:A1996BG22Y00007 ER PT B AU Fonda, RW Spanos, G Vandermeer, RA AF Fonda, RW Spanos, G Vandermeer, RA BE Smartt, HB Johnson, JA David, SA TI Processing-microstructure-property relationships in HSLA-100 steel weldments SO TRENDS IN WELDING RESEARCH LA English DT Proceedings Paper CT 4th International Conference on Trends in Welding Research CY JUN 05-08, 1995 CL GATLINBURG, TN SP ASM Int, Amer Welding Soc C1 USN,RES LAB,WASHINGTON,DC 20375. NR 0 TC 1 Z9 1 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 BN 0-87170-567-2 PY 1996 BP 277 EP 282 PG 6 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BG22Y UT WOS:A1996BG22Y00039 ER PT B AU Blackburn, JM Vassilaros, M Fox, A AF Blackburn, JM Vassilaros, M Fox, A BE Smartt, HB Johnson, JA David, SA TI Factors affecting the impact toughness of low carbon bainitic weld metal SO TRENDS IN WELDING RESEARCH LA English DT Proceedings Paper CT 4th International Conference on Trends in Welding Research CY JUN 05-08, 1995 CL GATLINBURG, TN SP ASM Int, Amer Welding Soc C1 USN,CTR SURFACE WARFARE,ANNAPOLIS,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA 9503 KINSMAN RD, MATERIALS PARK, OH 44073 BN 0-87170-567-2 PY 1996 BP 651 EP 656 PG 6 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA BG22Y UT WOS:A1996BG22Y00092 ER PT B AU Burch, D Johnson, M Sims, K AF Burch, D Johnson, M Sims, K GP IIT, RES INST IIT, RES INST TI Value added products from reclamation of military munitions SO TWENTY-SECOND INTERNATIONAL PYROTECHNICS SEMINAR LA English DT Proceedings Paper CT 22nd International Pyrotechnics Seminar CY JUL 15-19, 1996 CL IIT, RES INST, FT COLLINS, CO SP Int Pyrotechn Soc HO IIT, RES INST AB The Department of Defense has a backlog of excess, obsolete and unserviceable munitions in the Resource Recovery and Disposition Account. For many of these munition items the only method of disposal is open burning/open detonation which destroys valuable resources which can be reclaimed and converted to useful products. The Naval Surface Warfare Center, Crane Division in support of the Navy's Ordnance Reclamation Program and the Joint Service Large Rocket Motor Disposal Program has been developing technology for the removal and reclamation of the propellants, explosives and pyrotechnics from munitions. The University of Missouri-Rolla has demonstrated the use of high pressure waterjet technology for removal of PBX's from projectiles and warheads and Class 1.1 propellant from strategic rocket motors. Current projects are focusing on resource recovery and recycling (R-3) of the reclaimed energetics while minimizing disposal. Current Navy supported reclamation projects include reformulation of the explosives and Class 1.1 propellants into commercial blasting agents, reuse of Navy gun propellants for various applications including agriculture and oil-gas well stimulation. Other projects include RDX/HMX recovery from Class 1.1 explosives and propellants, the conversion of Explosive D into higher value products and the recovery/reuse of pyrotechnic ingredients. Lab/bench scale testing has been completed on many of these processes, and for some, pilot scale demonstrations have been or are scheduled to be completed during 1997. C1 USN, Ctr Surface Warfare, Crane Div, Silver Spring, MD 20910 USA. RP Burch, D (reprint author), USN, Ctr Surface Warfare, Crane Div, Silver Spring, MD 20910 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU I I T RESEARCH INST PI CHICAGO PA 10 WEST 35TH ST, CHICAGO, IL 60616 USA PY 1996 BP 69 EP 73 PG 5 WC Thermodynamics; Chemistry, Applied; Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Thermodynamics; Chemistry; Engineering; Materials Science; Mechanics GA BP46R UT WOS:000085216200007 ER PT B AU Chin, A Ellison, DS Hubble, BR Lateulere, M AF Chin, A Ellison, DS Hubble, BR Lateulere, M GP IIT, RES INST IIT, RES INST TI MTV ignition composition accelerated aging study SO TWENTY-SECOND INTERNATIONAL PYROTECHNICS SEMINAR LA English DT Proceedings Paper CT 22nd International Pyrotechnics Seminar CY JUL 15-19, 1996 CL IIT, RES INST, FT COLLINS, CO SP Int Pyrotechn Soc HO IIT, RES INST AB In this paper, we report the results of a number of physical and performance properties of magnesium/teflon/viton (MTV) ignition compositions which were subjected to various artificially accelerated aging (temperature-humidity-time) environments. Variables evaluated were: (i) MTV preparation technique (conventional solvent technique and a cryogenic solventless technique) and (ii) the impact of accelerated-aged magnesium on the aging of the MTV. Aging trends were measured using the following techniques: microcalorimetry, scanning electron microscopy, weight changes, burn times and output energies. C1 USN, Ctr Surface Warfare, Crane Div, Ordnance Engn Directorate, Crane, IN 47522 USA. RP Chin, A (reprint author), USN, Ctr Surface Warfare, Crane Div, Ordnance Engn Directorate, Crane, IN 47522 USA. NR 4 TC 0 Z9 0 U1 0 U2 1 PU I I T RESEARCH INST PI CHICAGO PA 10 WEST 35TH ST, CHICAGO, IL 60616 USA PY 1996 BP 75 EP 92 PG 18 WC Thermodynamics; Chemistry, Applied; Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Thermodynamics; Chemistry; Engineering; Materials Science; Mechanics GA BP46R UT WOS:000085216200008 ER PT B AU Chin, A Ellison, DS Hubble, BR Shortridge, RG AF Chin, A Ellison, DS Hubble, BR Shortridge, RG GP IIT, RES INST IIT, RES INST TI Microcalorimetric analysis of Mg and MTV compositions using adsorption/desorption technique SO TWENTY-SECOND INTERNATIONAL PYROTECHNICS SEMINAR LA English DT Proceedings Paper CT 22nd International Pyrotechnics Seminar CY JUL 15-19, 1996 CL IIT, RES INST, FT COLLINS, CO SP Int Pyrotechn Soc HO IIT, RES INST AB In an effort to extend the shelf life of magnesium fueled pyrotechnics without compromising safety and performance, We have been actively investigating the mechanism of aging process of the MTV composition. Determination of the reactivity of atomized magnesium with moisture was accomplished by utilizing a differential adsorption and desorption technique recently developed here. The application of the technique required using a new ThermoMetric 2255-010 digital and computer controlled GFAS (Gas Flow Ampoule System) equipped with a flow switching valve which can precisely control and cycle the relative humidity during a single microcalorimetric experiment. We have found that when using less than 10 milligrams of powdered magnesium samples, it is possible to separate out the heat flows associated with the various adsorption and desorption steps involved in the magnesium/moisture reaction (e.g., reversible reactions such as heat of adsorption and desorption on vessels and magnesium hydroxide, and irreversible reaction such as heat of reaction between moisture and magnesium, etc.). Currently the same technique are being applied to the MTV compositions. This paper describes the test procedures of sequential adsorption/desorption technique to obtain the thermodynamic parameters associated with moisture/magnesium reaction. C1 USN, Surface Warfare Ctr, Crane Div, Ordnance Engn Directorate, Crane, IN 47522 USA. RP Chin, A (reprint author), USN, Surface Warfare Ctr, Crane Div, Ordnance Engn Directorate, Crane, IN 47522 USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU I I T RESEARCH INST PI CHICAGO PA 10 WEST 35TH ST, CHICAGO, IL 60616 USA PY 1996 BP 93 EP 109 PG 17 WC Thermodynamics; Chemistry, Applied; Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Thermodynamics; Chemistry; Engineering; Materials Science; Mechanics GA BP46R UT WOS:000085216200009 ER PT B AU Johnson, DC AF Johnson, DC GP IIT, RES INST IIT, RES INST TI Using thermal analysis for pyrotechnic reliability predictions SO TWENTY-SECOND INTERNATIONAL PYROTECHNICS SEMINAR LA English DT Proceedings Paper CT 22nd International Pyrotechnics Seminar CY JUL 15-19, 1996 CL IIT, RES INST, FT COLLINS, CO SP Int Pyrotechn Soc HO IIT, RES INST AB The purpose of the United States Navy pyrotechnic quality evaluation (QE) program is to: (1) assess the current safety and reliability (2) identify and evaluate factors affecting the condition (3) determine degradation trends to predict future condition New evaluation techniques are being investigated to gain more information about pyrotechnic items. During the last few years these techniques have allowed for better degradation predictions and have resulted in reduced cost and sample size requirements. Thermal tests have been conducted on various explosive compositions to obtain variables type data. The tests that have been conducted include High Temperature Differential Thermal Analysis (HTDTA) and Differential Scanning Calorimetry (DSC) There are three useful applications for this data: (1) the data can be used to better predict degradation in the pyrotechnic compositions (2) the data can be compared to functional reliability for correlation analysis (3) the data can be analyzed and used as background information to begin microcalorimetric studies This paper presents data and evaluation results of thermal testing on the MJU-8/B Decoy Flare. The pull wire indicated aging and future testing will enable a shelf life projection. Comparisons will be used to focus evaluation efforts in the future maximizing results and reducing test costs. C1 USN, Ctr Surface Warfare, Crane Div,Ordnance Test & Evaluat Branch, Ordnance Engn Directorate, Crane, IN 47522 USA. RP Johnson, DC (reprint author), USN, Ctr Surface Warfare, Crane Div,Ordnance Test & Evaluat Branch, Ordnance Engn Directorate, 300 Highway 361, Crane, IN 47522 USA. NR 3 TC 0 Z9 0 U1 0 U2 1 PU I I T RESEARCH INST PI CHICAGO PA 10 WEST 35TH ST, CHICAGO, IL 60616 USA PY 1996 BP 227 EP 234 PG 8 WC Thermodynamics; Chemistry, Applied; Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Thermodynamics; Chemistry; Engineering; Materials Science; Mechanics GA BP46R UT WOS:000085216200020 ER PT B AU Lohkamp, CW LaGrange, DE Deckard, DD AF Lohkamp, CW LaGrange, DE Deckard, DD GP IIT, RES INST IIT, RES INST TI Product improvement of countermeasure training round SO TWENTY-SECOND INTERNATIONAL PYROTECHNICS SEMINAR LA English DT Proceedings Paper CT 22nd International Pyrotechnics Seminar CY JUL 15-19, 1996 CL IIT, RES INST, FT COLLINS, CO SP Int Pyrotechn Soc HO IIT, RES INST AB The SM-875/ALE Flare Simulator is used extensively by the Navy for training in place of real infrared decoy flares. The SM-875/ALE has a cost of about one third to one sixth that of real flares which makes it very desirable to use in this time of reducing budgets. There are however, two environmental problems and one functional problem with the SM-875/ALE. The pyrotechnic ignition composition contains lead oxide which is environmentally undesirable and when the simulator functions, four pieces of nonbiodegradable hardware are ejected and land on the training site. This hardware fouls the area where the simulators are used. Functionally, the SM-875/ALE has an extremely long time to light which makes it more difficult to detect. A Product Improvement Program (PIP) was undertaken with the requirements to eliminate the environmental problems and to reduce the time to light while maintaining or reducing Simulator cost. This paper describes the PIP effort, including the developmental testing associated with it. Presented are results from static ejection functional testing, environmental testing and safety testing. Also included are the initial flight function tests conducted during development. C1 USN, Ctr Surface Warfare, Ordnance Engn Directorate, Crane, IN 47522 USA. RP Lohkamp, CW (reprint author), USN, Ctr Surface Warfare, Ordnance Engn Directorate, Crane, IN 47522 USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU I I T RESEARCH INST PI CHICAGO PA 10 WEST 35TH ST, CHICAGO, IL 60616 USA PY 1996 BP 307 EP 315 PG 9 WC Thermodynamics; Chemistry, Applied; Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Thermodynamics; Chemistry; Engineering; Materials Science; Mechanics GA BP46R UT WOS:000085216200028 ER PT B AU Broxton, AE Wilson, JE AF Broxton, AE Wilson, JE GP IIT, RES INST IIT, RES INST TI Energetic material containment chamber design and development SO TWENTY-SECOND INTERNATIONAL PYROTECHNICS SEMINAR LA English DT Proceedings Paper CT 22nd International Pyrotechnics Seminar CY JUL 15-19, 1996 CL IIT, RES INST, FT COLLINS, CO SP Int Pyrotechn Soc HO IIT, RES INST C1 USN, Ordnance Engn Directorate, Crane Div, Ctr Surface Warfare, Crane, IN 47522 USA. RP Broxton, AE (reprint author), USN, Ordnance Engn Directorate, Crane Div, Ctr Surface Warfare, Crane, IN 47522 USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU I I T RESEARCH INST PI CHICAGO PA 10 WEST 35TH ST, CHICAGO, IL 60616 USA PY 1996 BP 461 EP 467 PG 7 WC Thermodynamics; Chemistry, Applied; Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Thermodynamics; Chemistry; Engineering; Materials Science; Mechanics GA BP46R UT WOS:000085216200042 ER PT B AU Reed, R Brady, VL Merwin, L Nissan, R AF Reed, R Brady, VL Merwin, L Nissan, R GP IIT, RES INST IIT, RES INST TI High elongation elastomers SO TWENTY-SECOND INTERNATIONAL PYROTECHNICS SEMINAR LA English DT Proceedings Paper CT 22nd International Pyrotechnics Seminar CY JUL 15-19, 1996 CL IIT, RES INST, FT COLLINS, CO SP Int Pyrotechn Soc HO IIT, RES INST AB A class of tough polyurethane elastomers having the ability to retain high concentrations of energetic plasticizers is being investigated. Recent work at the Naval Air Warfare Center Weapons Division (NAWCWPNS), China Lake, California, has shown that these elastomers can be used to attain composite energetic materials having enhanced properties. Such critical factors as polymer backbone structure, molecular weight, and functionality, which are responsible for these superior properties, are reviewed. Interaction of the polymer with plasticizers and solid fillers is clarified by nuclear magnetic resonance. The implications of these new binders on the enhancement of the performance of future explosives, propellants, and pyrotechnics is discussed. C1 USN, Air Warfare Ctr, Weapons Div, China Lake, CA 93555 USA. RP Reed, R (reprint author), USN, Air Warfare Ctr, Weapons Div, China Lake, CA 93555 USA. NR 15 TC 0 Z9 0 U1 0 U2 1 PU I I T RESEARCH INST PI CHICAGO PA 10 WEST 35TH ST, CHICAGO, IL 60616 USA PY 1996 BP 787 EP 799 PG 13 WC Thermodynamics; Chemistry, Applied; Engineering, Chemical; Engineering, Mechanical; Materials Science, Multidisciplinary; Mechanics SC Thermodynamics; Chemistry; Engineering; Materials Science; Mechanics GA BP46R UT WOS:000085216200067 ER PT B AU Grinstein, FF Kailasanath, K AF Grinstein, FF Kailasanath, K BE Burgess, AR Dryer, FL TI Exothermicity and three-dimensional effects in unsteady propane square jets SO TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2 LA English DT Proceedings Paper CT 26th International Symposium on Combustion CY JUL 28-AUG 02, 1996 CL NAPLES, ITALY SP Combust Inst, ALCOA Tech Ctr, Arthur D Little Inc, Chevron Res & Technol Co, Chevron Chem Co, CONSOL Inc, E I du Pont de Nemours & Co, Elect Power Res Inst, Engn Managements Consultants, EXXON Res & Engn Co, Factory Mutual Res Corp, Ford Motor Co, GE Corp Res & Dev Ctr, Owens, Brockway, Phillip Morris USA, Res Industries, Sawyer Associates, S Coast Air Quality Management Dist, SS Energy & Environm Int, United Technol Res Ctr, Ansaldo, Camera Commercio, Industria Artigianato, Consiglio Nazl Ricerche, ENEL CRT, ENI, Elsevier Sci Inc, FIAT CFR, Gordon & Breach Publicat Inc, Riello, Univ Federico II, Bric a Brac Napoi, Comune Napoli, ELASIS, Hewlett Packard Italian, Perkin Elmer Italia spa, Reg Campania ID TURBULENT MIXING LAYERS; SHEAR FLOWS; SCALE STRUCTURE; DYNAMICS; FLAMES; SIMULATIONS; RELEASE; FIELD AB We present results of numerical simulations of the near field of unsteady fuel jets emerging from a square nozzle into a quiescent oxidizer background with nonpremixed initial conditions. The jets studied are subsonic. compressible, and both jet and surroundings are diluted with nitrogen. The numerical model involves space/time developing jets, species and temperature-dependent diffusive transport, and finite-rate global chemistry. The jet visualizations show distinct high-temperature regions associated with local exothermicity and convective concentration of burned gas governed by the highly three-dimensional dynamics of vortex rings and hairpin vortices. Instantaneous chemical production occurs mainly at the outer sides of the fuel jet, at the interfaces between reactants, a:here most of the diffusive mixing takes place for the relatively fast flows considered. Topological features of the distributions of the scalar dissipation rate are characterized mainly by sheet-like structures, first appearing as relatively simple footprint surfaces enclosing vortex rings and braid vortices, and then becoming increasingly convoluted due to the complicated vortex interactions. Significant viscous damping effects are found for the reactive jets because of exothermicity and the monotonically increasing dependence of viscosity with temperature. In contrast, for the nearly isothermal nonreactive jets, viscosity is found to have only a slightly stabilizing role in the absence of chemical reactions. C1 USN, Res Lab, Computat Phys & Fluid Dynam Lab, Washington, DC 20375 USA. RP Grinstein, FF (reprint author), USN, Res Lab, Computat Phys & Fluid Dynam Lab, Code 6410, Washington, DC 20375 USA. NR 27 TC 4 Z9 4 U1 0 U2 0 PU COMBUSTION INSTITUTE PI PITTSBURGH PA 5001 BAUM BLVD, SUITE 635, PITTSBURGH, PA 15213-1851 USA PY 1996 BP 91 EP 96 PG 6 WC Thermodynamics; Chemistry, Applied; Engineering, Multidisciplinary SC Thermodynamics; Chemistry; Engineering GA BN87U UT WOS:000083308500010 ER PT B AU Kaplan, CR Oran, ES Kailasanath, K Ross, HD AF Kaplan, CR Oran, ES Kailasanath, K Ross, HD BE Burgess, AR Dryer, FL TI Gravitational effects on sooting diffusion flames SO TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2 LA English DT Proceedings Paper CT 26th International Symposium on Combustion CY JUL 28-AUG 02, 1996 CL NAPLES, ITALY SP Combust Inst, ALCOA Tech Ctr, Arthur D Little Inc, Chevron Res & Technol Co, Chevron Chem Co, CONSOL Inc, E I du Pont de Nemours & Co, Elect Power Res Inst, Engn Managements Consultants, EXXON Res & Engn Co, Factory Mutual Res Corp, Ford Motor Co, GE Corp Res & Dev Ctr, Owens, Brockway, Phillip Morris USA, Res Industries, Sawyer Associates, S Coast Air Quality Management Dist, SS Energy & Environm Int, United Technol Res Ctr, Ansaldo, Camera Commercio, Industria Artigianato, Consiglio Nazl Ricerche, ENEL CRT, ENI, Elsevier Sci Inc, FIAT CFR, Gordon & Breach Publicat Inc, Riello, Univ Federico II, Bric a Brac Napoi, Comune Napoli, ELASIS, Hewlett Packard Italian, Perkin Elmer Italia spa, Reg Campania ID TRANSPORT AB Simulations of a laminar ethylene-air diffusion flame burning in quiescent air are conducted to gain a better understanding of the effects of buoyancy on the dynamics and behavior of heavily sooting Barnes under normal-, partial-, micro-, zero-, and negative-gravity conditions and under conditions of gravitational jitter. The simulations solve the time-dependent reactive-flow Navier-Stokes equations coupled with submodels for soot formation and multidimensional radiation transport. Results from the computations follow many of the trends that have been experimentally observed in nonbuoyant diffusion flames. Due to the significant reduction in buoyancy-induced convection, diffusion becomes the dominant mechanism of transport. Microgravity flames are much longer and wider than their earth gravity counterparts due to the reduction in axial velocity and the thicker diffusion layers. In microgravity flame flicker disappears due to the lack of a buoyancy-induced instability and the entire sooting region is much larger The reduction in the axial velocity results in significantly longer residence times, allowing more time for soot particle surface growth, and resulting in greatly enhanced soot volume fraction. The enhanced soot production results in increased radiative heat losses, resulting in reduced flame temperatures. By tracing the path lines along which a soot parcel travels, the simulations show significant differences in the local environments through which soot passes between earth-gravity and microgravity flames. C1 USN, Res Lab, Computat Phys & Fluid Dynam Lab, Washington, DC 20375 USA. RP Kaplan, CR (reprint author), USN, Res Lab, Computat Phys & Fluid Dynam Lab, Washington, DC 20375 USA. NR 26 TC 7 Z9 7 U1 0 U2 1 PU COMBUSTION INSTITUTE PI PITTSBURGH PA 5001 BAUM BLVD, SUITE 635, PITTSBURGH, PA 15213-1851 USA PY 1996 BP 1301 EP 1309 PG 9 WC Thermodynamics; Chemistry, Applied; Engineering, Multidisciplinary SC Thermodynamics; Chemistry; Engineering GA BN87U UT WOS:000083308500154 ER PT B AU Papas, P Fleming, JW Sheinson, RS AF Papas, P Fleming, JW Sheinson, RS BE Burgess, AR Dryer, FL TI Extinction of non-premixed methane- and propane-air counterflow flames inhibited with CF4, CF3H and CF3Br SO TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2 LA English DT Proceedings Paper CT 26th International Symposium on Combustion CY JUL 28-AUG 02, 1996 CL NAPLES, ITALY SP Combust Inst, ALCOA Tech Ctr, Arthur D Little Inc, Chevron Res & Technol Co, Chevron Chem Co, CONSOL Inc, E I du Pont de Nemours & Co, Elect Power Res Inst, Engn Managements Consultants, EXXON Res & Engn Co, Factory Mutual Res Corp, Ford Motor Co, GE Corp Res & Dev Ctr, Owens, Brockway, Phillip Morris USA, Res Industries, Sawyer Associates, S Coast Air Quality Management Dist, SS Energy & Environm Int, United Technol Res Ctr, Ansaldo, Camera Commercio, Industria Artigianato, Consiglio Nazl Ricerche, ENEL CRT, ENI, Elsevier Sci Inc, FIAT CFR, Gordon & Breach Publicat Inc, Riello, Univ Federico II, Bric a Brac Napoi, Comune Napoli, ELASIS, Hewlett Packard Italian, Perkin Elmer Italia spa, Reg Campania ID FIRE SUPPRESSANTS AB The extinction condition was studied for non-premixed counterflow flames of methane and propane impinging against an air stream with added amounts of CF4, CF3H, or CF3Br. Strain rates near extinction using laser Doppler velocimetry were determined for counterflow methane-air flames, with CF4 and CF3H added to the air stream. The value obtained for the case of methane impinging against an air stream with no agent added, 400 +/- 25 s(-1), agrees with the experimental value reported in the literature. For both methane- and propane-air flames, increasing amounts of CF4, CF3H, or CF3Br in the air stream decrease the extinction oxidizer stream mass flow rate (or strain rate) monotonically until, at a given amount of agent, the extinction strain rate rapidly drops. If the molar percentage of agent in the air stream exceeds 2.5% for CF3Br and 11% for CF4 or CF3H, non-premixed counterflow methane-air flames cannot be maintained. Counterflow propane-air flames cannot be maintained if agent concentrations in the air stream are greater than 2.7% for CF3Br, 11% for CF3H, and >14% for CF4. For a given amount of agent added to the air stream that does not exceed the limiting agent concentration, the extinction strain rate is comparable for CF3H or CF4 addition in methane-air flames. CF3H is more effective than CF4 in propane-air flames, similar to the reported extinction behavior in heptane-air cup burner studies. CF3Br is significantly more effective than CF, or CF3H in extinguishing methane- or propane-air flames. The net chemical effect of CF3H in the inhibition of non-premixed counterflow flames is more pronounced for propane-air flames than for methane-air Barnes. Explanations for this behavior are discussed briefly. C1 USN, Res Lab, Combust Dynam Sect, Washington, DC 20375 USA. RP Papas, P (reprint author), USN, Res Lab, Combust Dynam Sect, Code 6185, Washington, DC 20375 USA. NR 16 TC 6 Z9 6 U1 0 U2 1 PU COMBUSTION INSTITUTE PI PITTSBURGH PA 5001 BAUM BLVD, SUITE 635, PITTSBURGH, PA 15213-1851 USA PY 1996 BP 1405 EP 1411 PG 7 WC Thermodynamics; Chemistry, Applied; Engineering, Multidisciplinary SC Thermodynamics; Chemistry; Engineering GA BN87U UT WOS:000083308500166 ER PT B AU Parr, TP Hanson-Parr, DM AF Parr, TP Hanson-Parr, DM BE Burgess, AR Dryer, FL TI Solid propellant diffusion flame structure SO TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2 LA English DT Proceedings Paper CT 26th International Symposium on Combustion CY JUL 28-AUG 02, 1996 CL NAPLES, ITALY SP Combust Inst, ALCOA Tech Ctr, Arthur D Little Inc, Chevron Res & Technol Co, Chevron Chem Co, CONSOL Inc, E I du Pont de Nemours & Co, Elect Power Res Inst, Engn Managements Consultants, EXXON Res & Engn Co, Factory Mutual Res Corp, Ford Motor Co, GE Corp Res & Dev Ctr, Owens, Brockway, Phillip Morris USA, Res Industries, Sawyer Associates, S Coast Air Quality Management Dist, SS Energy & Environm Int, United Technol Res Ctr, Ansaldo, Camera Commercio, Industria Artigianato, Consiglio Nazl Ricerche, ENEL CRT, ENI, Elsevier Sci Inc, FIAT CFR, Gordon & Breach Publicat Inc, Riello, Univ Federico II, Bric a Brac Napoi, Comune Napoli, ELASIS, Hewlett Packard Italian, Perkin Elmer Italia spa, Reg Campania ID COMBUSTION AB Laser-supported deflagration of ADN, AP, HNF, TNAZ, RDX, or HMX in sandwich configurations with various energetic and nonenergetic binders was studied. Planar laser-induced fluorescence (PLIF) was used to measure the two-dimensional NH, OH, and CN species profiles for these sandwiches. For the HNF sandwiches, obvious diffusion flames were present at low pressure, but they were weak, further from the surface than the HNF monopropellant flame, and not expected to be burn rate controlling. ADN was found to have diffusion flames with energetic binders at low pressures, but they were very far from the surface. The high burn rate of ADN at pressures above 3 atm left the binder behind, and the diffusion flames became weak. AP showed clear evidence for strong close,diffusion flames with binders and even with other oxidizers. The combination of HMX or TNAZ with AP leads to obvious diffusion flame interactions: the highly reactive AP-decomposition products accelerated the nitramine dark zone kinetics and caused the secondary flame to hold on the interface region. This leads to higher heat feedback in the interface region and a somewhat faster nitramine regression rate. TNAZ, RDX and HMX were not found to have any diffusion flames with energetic or nonenergetic binders: the monopropellant flame was lifted in the region around the binder. These results imply that ADN, HNF, TNAZ, RDX and HMX propellants will not have the clear particle size ballistic tailorability seen with AP propellants, because diffusion flames appear to, be strong and close to the surface (and therefore burn-rate controlling) only in AP propellants. C1 USN, Air Warfare Ctr, Combust Diagnost Lab, China Lake, CA 93555 USA. RP Parr, TP (reprint author), USN, Air Warfare Ctr, Combust Diagnost Lab, China Lake, CA 93555 USA. NR 28 TC 2 Z9 3 U1 0 U2 2 PU COMBUSTION INSTITUTE PI PITTSBURGH PA 5001 BAUM BLVD, SUITE 635, PITTSBURGH, PA 15213-1851 USA PY 1996 BP 1981 EP 1987 PG 7 WC Thermodynamics; Chemistry, Applied; Engineering, Multidisciplinary SC Thermodynamics; Chemistry; Engineering GA BN87U UT WOS:000083308500233 ER PT B AU Finlinson, JC AF Finlinson, JC BE Burgess, AR Dryer, FL TI Laser recoil combustion response of N5 propellant from 1 to 9 atmospheres SO TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2 LA English DT Proceedings Paper CT 26th International Symposium on Combustion CY JUL 28-AUG 02, 1996 CL NAPLES, ITALY SP Combust Inst, ALCOA Tech Ctr, Arthur D Little Inc, Chevron Res & Technol Co, Chevron Chem Co, CONSOL Inc, E I du Pont de Nemours & Co, Elect Power Res Inst, Engn Managements Consultants, EXXON Res & Engn Co, Factory Mutual Res Corp, Ford Motor Co, GE Corp Res & Dev Ctr, Owens, Brockway, Phillip Morris USA, Res Industries, Sawyer Associates, S Coast Air Quality Management Dist, SS Energy & Environm Int, United Technol Res Ctr, Ansaldo, Camera Commercio, Industria Artigianato, Consiglio Nazl Ricerche, ENEL CRT, ENI, Elsevier Sci Inc, FIAT CFR, Gordon & Breach Publicat Inc, Riello, Univ Federico II, Bric a Brac Napoi, Comune Napoli, ELASIS, Hewlett Packard Italian, Perkin Elmer Italia spa, Reg Campania AB The combustion response of N5-catalyzed double-base propellant was experimentally measured at 1, 2, 3, 4, 6, and 9 atm using the laser recoil technique. Tests were done using a logarithmic frequency sweep controller to gain maximum data from each test. Sample burn rate at a mean heal flux of 35 W/cm(2) and 1 atm was 1.3 mm/s. The CO2 laser power was monitored in real time using a fast response HgCdTe room temperature detector. The effects of pressure (1-9 atm) and oscillation amplitude (+/-9, 15, and 25 W/cm(2)) on the response function were measured. Steady state burn rate data at low pressure was measured. The slight pressure rise inside the combustion tank caused an upward drift in the force transducer signal. Light oscillations generally changed from lead to a lag of over 100 degrees as frequency changed from 10 to 50 Hz. At a constant pressure, thrust oscillation levels increased as the laser power oscillation level was increased. The cross from phase lead to lag seemed to decrease in frequency as the power oscillation amplitude increased. At constant pressure, the light amplitude response broadened as the power oscillation amplitude increased and the phase crossover moved to a slightly lower frequency. Thrust oscillation amplitudes decreased as the pressure increased to 75 psi, above which they became insignificant at these ion heat Aus levels. Thrust phase lead increased as the pressure was increased. Light oscillations increased as the pressure increased, due to the flame zone moving closer to the propellant surface. C1 USN, Warfare Ctr, Weapons Div, China Lake, CA 93555 USA. RP Finlinson, JC (reprint author), USN, Warfare Ctr, Weapons Div, Res Code 47320D, China Lake, CA 93555 USA. NR 13 TC 0 Z9 0 U1 0 U2 0 PU COMBUSTION INSTITUTE PI PITTSBURGH PA 5001 BAUM BLVD, SUITE 635, PITTSBURGH, PA 15213-1851 USA PY 1996 BP 2025 EP 2031 PG 7 WC Thermodynamics; Chemistry, Applied; Engineering, Multidisciplinary SC Thermodynamics; Chemistry; Engineering GA BN87U UT WOS:000083308500238 ER PT B AU Parr, TP Gutmark, E Wilson, K Hanson-Parr, DM Yu, K Smith, RA Schadow, KC AF Parr, TP Gutmark, E Wilson, K Hanson-Parr, DM Yu, K Smith, RA Schadow, KC BE Burgess, AR Dryer, FL TI Compact incinerator afterburner concept based on vortex combustion SO TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2 LA English DT Proceedings Paper CT 26th International Symposium on Combustion CY JUL 28-AUG 02, 1996 CL NAPLES, ITALY SP Combust Inst, ALCOA Tech Ctr, Arthur D Little Inc, Chevron Res & Technol Co, Chevron Chem Co, CONSOL Inc, E I du Pont de Nemours & Co, Elect Power Res Inst, Engn Managements Consultants, EXXON Res & Engn Co, Factory Mutual Res Corp, Ford Motor Co, GE Corp Res & Dev Ctr, Owens, Brockway, Phillip Morris USA, Res Industries, Sawyer Associates, S Coast Air Quality Management Dist, SS Energy & Environm Int, United Technol Res Ctr, Ansaldo, Camera Commercio, Industria Artigianato, Consiglio Nazl Ricerche, ENEL CRT, ENI, Elsevier Sci Inc, FIAT CFR, Gordon & Breach Publicat Inc, Riello, Univ Federico II, Bric a Brac Napoi, Comune Napoli, ELASIS, Hewlett Packard Italian, Perkin Elmer Italia spa, Reg Campania ID DUMP COMBUSTOR; MIXING LAYERS; WASTES AB A design concept for a compact incinerator afterburner based on actively controlled vortex combustion was developed and tested at similar to 5 kW and similar to 50 kW Acoustic control of fluid dynamics was used to enhance mixing and increase the DRE (destruction and removal efficiency:) for a waste surrogate. A detail study of the concept of utilizing vortex combustion for incineration was undertaken in a small-scale flame using advanced laser diagnostics to elucidate and optimize the fluid dynamic mechanisms. The system was then scaled up by similar to 10, optimized, and evaluated for performance. The open loop active control methodology is based on the concept of combustion in periodic axisymmetric vortices. Acoustic excitation was used both to stabilize coherent vortices in the central jet air flow and to control circumferential gaseous fuel and waste injection into the shear layer at the right time during vortex formation. The gaseous-fueled actively controlled 4.5 MY incinerator was able to surpass 99.997% DRE even when the gaseous benzene waste surrogate constituted 66% of the total combustible content and the combustible to total air ratio (Phi) was 0.974; lowering Phi below this increased the DRE to beyond our detection limit. The DRE for gaseous benzene exceeded 99.999% in the 50-kW system when combustible to air ratios were kept below 0.78. Parameters found critical to maintenance of high DRE at both energy scales were the fraction of circumferentially entrained air, the entrainment geometry the forcing levels, and the phase angle of fuel injection with respect to the vortex roll-up. The 50-kW combustor was also evaluated for stack emissions and combustion efficiency. The controller improved combustion efficiency and lowered emissions: CO dropped from 2900 ppm to as low as 2 ppm. Unburned hydrocarbons were also reduced. Under some conditions the controller also reduced NOx levels down to as low as 12 ppm. C1 USN, Warfare Ctr, Weapons Civ, Res & Technol Dept, China Lake, CA 93555 USA. RP Parr, TP (reprint author), USN, Warfare Ctr, Weapons Civ, Res & Technol Dept, Code 474320D, China Lake, CA 93555 USA. OI Gutmark, Ephraim/0000-0001-7816-4257 NR 19 TC 3 Z9 3 U1 0 U2 0 PU COMBUSTION INSTITUTE PI PITTSBURGH PA 5001 BAUM BLVD, SUITE 635, PITTSBURGH, PA 15213-1851 USA PY 1996 BP 2471 EP 2477 PG 7 WC Thermodynamics; Chemistry, Applied; Engineering, Multidisciplinary SC Thermodynamics; Chemistry; Engineering GA BN87U UT WOS:000083308500290 ER PT B AU Yu, KH Parr, TP Wilson, KJ Schadow, KC Gutmark, EJ AF Yu, KH Parr, TP Wilson, KJ Schadow, KC Gutmark, EJ BE Burgess, AR Dryer, FL TI Active control of liquid-fueled combustion using periodic vortex-droplet interaction SO TWENTY-SIXTH SYMPOSIUM (INTERNATIONAL) ON COMBUSTION, VOLS 1 AND 2 LA English DT Proceedings Paper CT 26th International Symposium on Combustion CY JUL 28-AUG 02, 1996 CL NAPLES, ITALY SP Combust Inst, ALCOA Tech Ctr, Arthur D Little Inc, Chevron Res & Technol Co, Chevron Chem Co, CONSOL Inc, E I du Pont de Nemours & Co, Elect Power Res Inst, Engn Managements Consultants, EXXON Res & Engn Co, Factory Mutual Res Corp, Ford Motor Co, GE Corp Res & Dev Ctr, Owens, Brockway, Phillip Morris USA, Res Industries, Sawyer Associates, S Coast Air Quality Management Dist, SS Energy & Environm Int, United Technol Res Ctr, Ansaldo, Camera Commercio, Industria Artigianato, Consiglio Nazl Ricerche, ENEL CRT, ENI, Elsevier Sci Inc, FIAT CFR, Gordon & Breach Publicat Inc, Riello, Univ Federico II, Bric a Brac Napoi, Comune Napoli, ELASIS, Hewlett Packard Italian, Perkin Elmer Italia spa, Reg Campania ID PARTICLE DISPERSION; SHEAR-LAYER; INSTABILITIES; OSCILLATIONS; JET; SUPPRESSION AB Pulsating liquid-fuel sprays from automotive fuel injectors were characterized and analyzed in nonreacting and reacting experiments to develop active combustion control using liquid-fuel injection. Square waves with variable duty cycle were used as an input signal for injector operation. Using ethanol pressurized to 275 kPa, pulsating injection with 100% flux modulation was achieved at frequencies as high as 1 kHz. Spray size and spatial distributions were measured from instantaneous Mie scattering images. The results showed that the pulsating sprays contained a high number of relatively large droplets that would be unfavorable for direct combustion control applications. A dump combustor experiment using these injectors shelved very little dependence on phase of fuel injection. To reduce droplet size, a new injection setup was designed by combining a fuel injector with a swirl-based atomizer. In the new setup, the fuel injector functions only as a solenoid valve with high-frequency response, whereas the atomizer is used to reduce droplet size. A substantial reduction in droplet size was obtained while maintaining a similar frequency response. Using the improved injection setup, nonreacting experiments were performed in an actively controlled dump combustor to characterize spatial distribution of fuel droplets as a function of control parameters. Fuel injection was synchronized with different stages of air vortex development, and the interaction between spray droplets and large-scale flow features was investigated systematically. The results showed that the synchronized injection yielded an effective way of controlling the spatial distribution of fuel droplets in the dump combustor flow field. Finally, a reacting experiment showed that combustor controllability was significantly extended. The results open up the possibility of actively controlling liquid-fueled combustion in other practical combustors. C1 USN, Warfare Ctr, WEap Div, Res & Technol Div, China Lake, CA 93555 USA. RP Yu, KH (reprint author), USN, Warfare Ctr, WEap Div, Res & Technol Div, China Lake, CA 93555 USA. OI Gutmark, Ephraim/0000-0001-7816-4257 NR 27 TC 4 Z9 4 U1 0 U2 0 PU COMBUSTION INSTITUTE PI PITTSBURGH PA 5001 BAUM BLVD, SUITE 635, PITTSBURGH, PA 15213-1851 USA PY 1996 BP 2843 EP 2850 PG 8 WC Thermodynamics; Chemistry, Applied; Engineering, Multidisciplinary SC Thermodynamics; Chemistry; Engineering GA BN87U UT WOS:000083308500336 ER PT B AU Prinz, DK Floyd, LE Herring, LC Brueckner, GE AF Prinz, DK Floyd, LE Herring, LC Brueckner, GE BE Huffman, RE Stergis, CG TI On-orbit performance of deuterium calibration lamps during four years of SUSIM operations on the UARS SO ULTRAVIOLET ATMOSPHERIC AND SPACE REMOTE SENSING: METHODS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Ultraviolet Atmospheric and Space Remote Sensing - Methods and Instrumentation CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing DE calibration; discharge lamp; ultraviolet AB The Solar Ultraviolet Spectral Irradiance Monitor (SUSIM) on the Upper Atmospheric Research Satellite (UARS) carries four deuterium discharge lamps to assist in tracking inflight degradation of the instrument in the spectral range between 115 nm and 410 nm. The lamps have been in orbit since the launch of UARS on 12 September 1991. In this paper we discuss the performance of the two most-used lamps during the first four years of the UARS mission, and offer recommendations for improving the ability of the lamps to track inflight degradation in future space instruments. RP Prinz, DK (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 8 Z9 8 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2219-3 J9 P SOC PHOTO-OPT INS PY 1996 VL 2831 BP 25 EP 35 DI 10.1117/12.257197 PG 11 WC Instruments & Instrumentation; Remote Sensing; Optics SC Instruments & Instrumentation; Remote Sensing; Optics GA BG73K UT WOS:A1996BG73K00002 ER PT B AU Carruthers, GR Seeley, TD AF Carruthers, GR Seeley, TD BE Huffman, RE Stergis, CG TI Global Imaging Monitor of the Ionosphere (GIMI): A far-ultraviolet imaging experiment on ARGOS SO ULTRAVIOLET ATMOSPHERIC AND SPACE REMOTE SENSING: METHODS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Ultraviolet Atmospheric and Space Remote Sensing - Methods and Instrumentation CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing AB The Global Imaging Monitor of the Ionosphere (GIMI) is one of several remote-sensing instruments under development for flight on the Air Force Space Test Program's P91-1 Advanced Research and Global Observation Satellite (ARGOS), planned for launch in 1997. The primary objective of GIMI is to map and monitor the ionospheric O+ and electron density on a global basis, by means of wide-field imaging of ionospheric far-ultraviolet emissions. It will also be used to detect and characterize local perturbations of the ionosphere due to natural and artificial events. Atomic nitrogen in the upper atmosphere will be measured by nitric oxide nightglow emissions resulting from its combination with atomic oxygen. Observations of stellar occultations by Earth's atmosphere will be used to measure the neutral density distributions of N-2 and O-2. Other objectives are to map and monitor the ultraviolet background in near-Earth space due to ionospheric and airglow emissions and extraterrestrial sources, and to obtain all-sky surveys-of celestial point and diffuse sources. GIMI consists of two wide-field imaging cameras sensitive in three far- and extreme-UV spectral ranges (75-110 nm, 131-160 nm, and 131-200 nm), selected for their utility in day and night ionospheric and neutral atmospheric remote sensing. The GIMI sensors are based on electron-bombarded CCD arrays, with opaque alkali halide photocathodes and Schmidt or all-reflective optical systems. RP Carruthers, GR (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7609,WASHINGTON,DC 20375, USA. NR 0 TC 4 Z9 4 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2219-3 J9 P SOC PHOTO-OPT INS PY 1996 VL 2831 BP 65 EP 93 DI 10.1117/12.257211 PG 29 WC Instruments & Instrumentation; Remote Sensing; Optics SC Instruments & Instrumentation; Remote Sensing; Optics GA BG73K UT WOS:A1996BG73K00006 ER PT B AU Osterman, SN Thonnard, SE Williams, JZ McCoy, RP Dymond, KF Budzien, SA Nicholas, AC Parker, SE AF Osterman, SN Thonnard, SE Williams, JZ McCoy, RP Dymond, KF Budzien, SA Nicholas, AC Parker, SE BE Huffman, RE Stergis, CG TI Optical calibration results for the series of Special Sensor Ultraviolet Limb Imagers (SSULI) SO ULTRAVIOLET ATMOSPHERIC AND SPACE REMOTE SENSING: METHODS AND INSTRUMENTATION SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Conference on Ultraviolet Atmospheric and Space Remote Sensing - Methods and Instrumentation CY AUG 07-08, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers, N Amer Remote Sensing Ind Assoc, Amer Soc Photogrammetry & Remote Sensing AB The Special Sensor Ultraviolet Limb Imager (SSULI) program involves the development of a series of five ultraviolet limb imaging spectrographs by the Naval Research Laboratory for the Defense Meteorological Satellite Program (DMSP). In addition, a duplicate sixth instrument, the Low Resolution Airglow/Aurora Spectrograph (LORAAS) will be flown aboard the Space Test Program (STP) ARGOS satellite in late 1997. These instruments will measure vertical intensity profiles of the Earth's airglow in the extreme and far ultraviolet (800 to 1700 Angstrom) with 19 Angstrom resolution. The instruments view the limb using a rotating mirror to scan the 0.1 degrees x 2.4 degrees field of view from 750km to 50km tangent altitude. SSULI measurements will be used to infer altitude profiles of ion, electron and neutral density. The first SSULI is scheduled to launch in 2000, and coverage from all the instruments will provide a continuous atmospheric data set spanning an entire solar cycle. The first four SSULI instruments are complete, and detailed optical calibrations have been performed. Assembly and calibration of the remaining SSULI instrument and LORAAS are underway, and preliminary results are available. Preliminary results of the first SSULI: instrument were reported in 1994. This paper updates the calibration results of the first instrument and presents a summary of the results of the next three SSULI instruments. Comparisons between instrument characteristics are also discussed, including variations in calibration techniques. A brief discussion on the periodic calibration verification of the SSULI instruments during storage and prior to launch is included. RP Osterman, SN (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2219-3 J9 P SOC PHOTO-OPT INS PY 1996 VL 2831 BP 229 EP 240 DI 10.1117/12.257204 PG 12 WC Instruments & Instrumentation; Remote Sensing; Optics SC Instruments & Instrumentation; Remote Sensing; Optics GA BG73K UT WOS:A1996BG73K00020 ER PT B AU Bamber, D AF Bamber, D BE Horvitz, E Jensen, F TI Entailment in probability of thresholded generalizations SO UNCERTAINTY IN ARTIFICIAL INTELLIGENCE LA English DT Proceedings Paper CT 12th Conference on Uncertainty in Artificial Intelligence (UAI 96) CY AUG 01-04, 1996 CL PORTLAND, OR SP Hugin Expert A S, Informat Extract & Transport, Knowledge Ind, Microsoft Res, Prevision, Ricoh Calif Res Ctr, Rockwell Sci Ctr, Thinkbank AB A nonmonotonic logic of thresholded generalizations is presented. Given propositions alpha and beta from a language L and a positi ile integer k, the thresholded generalization alpha double right arrow(k) beta means that the conditional probability ability pi(beta/alpha) is at least 1 - psi delta(k). A two-level probability structure is defined. At the lower level, a model is defined to be a probability function on L. At the upper level, there is a probability distribution over models. A definition is given of what it means for a collection of thresholded generalizations to entail another thresholded generalization. This nonmonotonic entailment relation, called entailment in probability, has the feature that its conclusions are probabilistically trustworthy meaning that, given true premises, it is improbable that an entailed conclusion would be false. A procedure is presented for ascertaining whether any given collection of premises entails any given conclusion. It is shown that entailment in probability is closely related to Goldszmidt and Pearl's System-Z(+), thereby demonstrating that System-Z(+)'s conclusions are probabilistically trustworthy. RP Bamber, D (reprint author), USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,RES DEV TEST & EVALUAT DIV 44215,53355 RYNE RD,SAN DIEGO,CA 92152, USA. 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 1-55860-412-X PY 1996 BP 57 EP 64 PG 8 WC Computer Science, Artificial Intelligence SC Computer Science GA BJ16A UT WOS:A1996BJ16A00007 ER PT B AU Barsoum, RGS AF Barsoum, RGS BE Inoue, K Shen, SIY Taya, M TI Mechanics of high performance actuation SO US-JAPAN WORKSHOP ON SMART MATERIALS AND STRUCTURES LA English DT Proceedings Paper CT 1st US-Japan Workshop on Smart Materials and Structures CY DEC 03-04, 1995 CL UNIV WASHINGTON, SEATTLE, WA SP Natl Sci Fdn, Inst Mech & Mat, New Energy Dev Org, R&D Inst Met & Composites Future Ind, Mineral Met & Mat Soc (TMS), Univ Washington, Coll Engn HO UNIV WASHINGTON AB The paper discusses advances in the mechanics of materials of high performance actuators and active materials. New concept of engineering active materials, and developments of hybrid active materials are introduced. The paper addresses advances in constitutive modeling, failure of ferroelectric ceramics, and active material interaction with host material, which are of great importance to reliable design of high performance actuators. In the area of actuator design the paper covers different approaches for high strain / high frequency actuators, new actuator concepts and the mechanics of embedding of actuators in composite structures. C1 Off Naval Res, Ship Struct & Syst Div, Solid Mech Program, Arlington, VA 22217 USA. RP Barsoum, RGS (reprint author), Off Naval Res, Ship Struct & Syst Div, Solid Mech Program, Arlington, VA 22217 USA. NR 27 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 184 THORN HILL RD, WARRENDALE, PA 15086-7514 USA BN 0-87339-333-3 PY 1996 BP 11 EP 18 PG 4 WC Materials Science, Composites SC Materials Science GA BM47S UT WOS:000078856600002 ER PT S AU Obeysekare, U Williams, C Durbin, J Rosenblum, L Rosenberg, R Grinstein, F Ramamurti, R Landsberg, A Sandberg, W AF Obeysekare, U Williams, C Durbin, J Rosenblum, L Rosenberg, R Grinstein, F Ramamurti, R Landsberg, A Sandberg, W GP IEEE COMP SOC TI Virtual workbench - A non-immersive virtual environment for visualizing and interacting with 3D objects for scientific visualization SO VISUALIZATION '96, PROCEEDINGS SE IEEE CONFERENCE ON VISUALIZATION LA English DT Proceedings Paper CT 7th Annual IEEE Conference on Visualization (Visualization 96) CY OCT 27-NOV 01, 1996 CL SAN FRANCISCO, CA SP IEEE Comp Soc Tech Comm Comp Graph, ACM SIGGRAPH AB The Virtual Workbench (VW) is a non-immersive virtual environment that allows users to view and interact with stereoscopic objects displayed on a workspace similar to a tabletop workspace used in day-to-day life. A VW is an ideal environment for collaborative work where several colleagues can gather around the table to study 3D virtual objects. The Virtual Reality laboratory at the Naval Research Laboratory has implemented the VW using a concept similar to what is reported in [1]. This paper investigates how the VW can be used as a non-immersive display device for understanding and interpreting complex objects encountered in the scientific visualization field. Different techniques for interacting with 3D visualization objects on the table and using VW as a display device for visualization are evaluated using several cases. RP Obeysekare, U (reprint author), USN,RES LAB,CTR COMPUTAT SCI,SCI VISUALIZAT LAB,CODE 5590,4555 OVERLOOK AVE,WASHINGTON,DC 20375, USA. NR 0 TC 13 Z9 13 U1 0 U2 0 PU I E E E, COMPUTER SOC PRESS PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, LOS ALAMITOS, CA 90720 SN 1070-2385 BN 0-89791-864-9 J9 IEEE VISUAL PY 1996 BP 345 EP + DI 10.1109/VISUAL.1996.568128 PG 4 WC Computer Science, Software Engineering SC Computer Science GA BG87S UT WOS:A1996BG87S00046 ER PT J AU Brower, JB Barford, CC Hao, OJ AF Brower, JB Barford, CC Hao, OJ TI Biological fixed-film systems SO WATER ENVIRONMENT RESEARCH LA English DT Review C1 HARVARD UNIV, DIV APPL SCI, CAMBRIDGE, MA 02138 USA. UNIV MARYLAND, DEPT CIVIL ENGN, COLLEGE PK, MD 20742 USA. RP Brower, JB (reprint author), USN, RES LAB, CODE 6900, 4555 OVERLOOK AVE, WASHINGTON, DC 20375 USA. NR 173 TC 1 Z9 1 U1 0 U2 4 PU WATER ENVIRONMENT FEDERATION PI ALEXANDRIA PA 601 WYTHE ST, ALEXANDRIA, VA 22314-1994 USA SN 1061-4303 J9 WATER ENVIRON RES JI Water Environ. Res. PY 1996 VL 68 IS 4 BP 469 EP 479 DI 10.2175/106143096X135326 PG 11 WC Engineering, Environmental; Environmental Sciences; Limnology; Water Resources SC Engineering; Environmental Sciences & Ecology; Marine & Freshwater Biology; Water Resources GA UX253 UT WOS:A1996UX25300009 ER PT J AU Miller, M Silbernagel, M Kuepper, T Varnava, W AF Miller, M Silbernagel, M Kuepper, T Varnava, W GP AMER DESALTING ASSOC TI Testing prefiltration systems for the military ROWPU SO WATER SUPPLY PUZZLE: HOW DOES DESALTING FIT IN? LA English DT Proceedings Paper CT 1996 Biennial Conference and Exposition on the Water Supply Puzzle - How Does Desalting Fit In CY AUG 04-08, 1996 CL MONTEREY, CA SP Amer Desalting Assoc AB Eleven filtration systems were operated on natural seawater, as well as 5 and 20 NTU bentonite-dosed seawater to determine their application as RO prefiltration for a new generation mobile reverse osmosis water purification unit (ROWPU) presently under development for the U.S. Army and Marine Corps. The systems included both media and membrane type filters. This report addresses the evaluation of eight of those filter systems on tile basis of water quality results obtained during testing. RP Miller, M (reprint author), USN,FACIL ENGN SERV CTR,1100 23RD AVE,PORT HUENEME,CA 93043, USA. NR 0 TC 0 Z9 0 U1 1 U2 1 PU AMERICAN DESALTING ASSOCIATION PI SACRAMENTO PA 915 L STREET SUITE 1000, SACRAMENTO, CA 95814 PY 1996 BP 467 EP 485 PG 3 WC Water Resources SC Water Resources GA BH65S UT WOS:A1996BH65S00031 ER PT B AU Chen, VC AF Chen, VC BE Szu, HH TI Applications of time-frequency processing to radar imaging SO WAVELET APPLICATIONS III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Wavelet Applications III Conference CY APR 08-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE radar imaging; adaptive wavelet transform; time-frequency processing C1 USN,RES LAB,DIV RADAR,WASHINGTON,DC 20375. 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 0-8194-2143-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2762 BP 23 EP 31 DI 10.1117/12.236004 PG 9 WC Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Remote Sensing; Optics SC Computer Science; Engineering; Remote Sensing; Optics GA BF34Y UT WOS:A1996BF34Y00002 ER PT B AU Hewer, G Kuo, W Peterson, L AF Hewer, G Kuo, W Peterson, L BE Szu, HH TI Adaptive wavelet detection of transients using the bootstrap SO WAVELET APPLICATIONS III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Wavelet Applications III Conference CY APR 08-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE Daubechies wavelet; bootstrap; constant false alarm rate (CFAR); linear FM chirp; Barker coded pulse C1 USN,AIR WARFARE CTR,WEAP DIV,CHINA LAKE,CA 93555. NR 0 TC 1 Z9 1 U1 0 U2 0 PU SPIE - INT SOC OPTICAL ENGINEERING PI BELLINGHAM PA PO BOX 10, BELLINGHAM, WA 98227-0010 BN 0-8194-2143-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2762 BP 105 EP 114 DI 10.1117/12.235985 PG 10 WC Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Remote Sensing; Optics SC Computer Science; Engineering; Remote Sensing; Optics GA BF34Y UT WOS:A1996BF34Y00011 ER PT B AU Garcia, J Szu, H AF Garcia, J Szu, H BE Szu, HH TI Chords in wavelet projection transform space applied to aspect invariant pattern recognition SO WAVELET APPLICATIONS III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Wavelet Applications III Conference CY APR 08-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE pattern recognition; automatic target recognition; wavelets; projection; chords; noise coding C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV,INFORMAT SCI GRP,SILVER SPRING,MD 20903. 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 0-8194-2143-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2762 BP 208 EP 219 DI 10.1117/12.235995 PG 12 WC Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Remote Sensing; Optics SC Computer Science; Engineering; Remote Sensing; Optics GA BF34Y UT WOS:A1996BF34Y00021 ER PT B AU Chen, VC Qian, S AF Chen, VC Qian, S BE Szu, HH TI CFAR detection and extraction of unknown signal in noise with time-frequency Gabor transform SO WAVELET APPLICATIONS III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Wavelet Applications III Conference CY APR 08-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers DE CFAR detection; joint time-frequency transform; signal detection C1 USN,RES LAB,WASHINGTON,DC 20375. 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 0-8194-2143-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2762 BP 285 EP 294 DI 10.1117/12.236002 PG 10 WC Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Remote Sensing; Optics SC Computer Science; Engineering; Remote Sensing; Optics GA BF34Y UT WOS:A1996BF34Y00029 ER PT B AU Szu, H Garcia, J AF Szu, H Garcia, J BE Szu, HH TI Sensor fusion for wide-area surveillance SO WAVELET APPLICATIONS III SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT Wavelet Applications III Conference CY APR 08-12, 1996 CL ORLANDO, FL SP Soc Photo Opt Instrumentat Engineers C1 USN,CTR SURFACE WARFARE,DAHLGREN DIV CODE B44,DAHLGREN,VA 22448. 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 0-8194-2143-X J9 P SOC PHOTO-OPT INS PY 1996 VL 2762 BP 514 EP 523 DI 10.1117/12.236023 PG 10 WC Computer Science, Artificial Intelligence; Engineering, Biomedical; Engineering, Electrical & Electronic; Remote Sensing; Optics SC Computer Science; Engineering; Remote Sensing; Optics GA BF34Y UT WOS:A1996BF34Y00050 ER PT B AU Creusere, CD AF Creusere, CD BE Unser, MA Aldroubi, A Laine, AF TI A family of image compression algorithms which are robust to transmission errors SO WAVELET APPLICATIONS IN SIGNAL AND IMAGE PROCESSING IV, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 4th Conference on Wavelet Applications in Signal and Image Processing CY AUG 06-09, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE error resilience; embedded zerotree wavelet; image compression; robust compression C1 USN,AIR WARFARE CTR,CHINA LAKE,CA 93555. 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 0-8194-2213-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2825 BP 890 EP 900 DI 10.1117/12.255293 PN 1-2 PG 11 WC Optics SC Optics GA BG61S UT WOS:A1996BG61S00082 ER PT B AU Nguyen, CT Gong, KF AF Nguyen, CT Gong, KF BE Unser, MA Aldroubi, A Laine, AF TI Performance analysis of a wavelet-based hybrid neurosystem for signal classification SO WAVELET APPLICATIONS IN SIGNAL AND IMAGE PROCESSING IV, PTS 1 AND 2 SE PROCEEDINGS OF THE SOCIETY OF PHOTO-OPTICAL INSTRUMENTATION ENGINEERS (SPIE) LA English DT Proceedings Paper CT 4th Conference on Wavelet Applications in Signal and Image Processing CY AUG 06-09, 1996 CL DENVER, CO SP Soc Photo Opt Instrumentat Engineers DE wavelets; hybrid neurosystem; hybrid architecture; signal classifications; pattern recognition C1 USN,UNDERSEA WARFARE CTR,DIV NEWPORT,NEWPORT,RI 02841. 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 0-8194-2213-4 J9 P SOC PHOTO-OPT INS PY 1996 VL 2825 BP 982 EP 991 DI 10.1117/12.255220 PN 1-2 PG 10 WC Optics SC Optics GA BG61S UT WOS:A1996BG61S00091 ER PT B AU Rome, D AF Rome, D BE DeNale, R TI Overview of the 1993 National Shipbuilding and Shipyard Conversion Act and related government funded programs SO WELDING AND WELD AUTOMATION IN SHIPBUILDING LA English DT Proceedings Paper CT Symposium on Welding and Weld Automation in Shipbuilding, at the Materials Week 95 CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Struct Mat Div C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,BETHESDA,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-322-8 PY 1996 BP 1 EP 16 PG 16 WC Engineering, Marine; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BG03D UT WOS:A1996BG03D00001 ER PT B AU Wong, RJ AF Wong, RJ BE DeNale, R TI Hydrogen cracking resistance of high strength steels in single pass and multiple pass weldability tests SO WELDING AND WELD AUTOMATION IN SHIPBUILDING LA English DT Proceedings Paper CT Symposium on Welding and Weld Automation in Shipbuilding, at the Materials Week 95 CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Struct Mat Div C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,ANNAPOLIS,MD 21402. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-322-8 PY 1996 BP 33 EP 46 PG 14 WC Engineering, Marine; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BG03D UT WOS:A1996BG03D00003 ER PT B AU Blackburn, JM Brand, PC Prask, HJ Fields, RJ AF Blackburn, JM Brand, PC Prask, HJ Fields, RJ BE DeNale, R TI Importance of d(o) in the determination of weld residual stresses using neutron diffraction SO WELDING AND WELD AUTOMATION IN SHIPBUILDING LA English DT Proceedings Paper CT Symposium on Welding and Weld Automation in Shipbuilding, at the Materials Week 95 CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Struct Mat Div C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,ANNAPOLIS,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-322-8 PY 1996 BP 47 EP 65 PG 19 WC Engineering, Marine; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BG03D UT WOS:A1996BG03D00004 ER PT B AU DeLoach, JJ AF DeLoach, JJ BE DeNale, R TI An overview of the US Navy filler metal development program SO WELDING AND WELD AUTOMATION IN SHIPBUILDING LA English DT Proceedings Paper CT Symposium on Welding and Weld Automation in Shipbuilding, at the Materials Week 95 CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Struct Mat Div C1 USN,CTR SURFACE WARFARE,ANNAPOLIS,MD. NR 0 TC 5 Z9 5 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-322-8 PY 1996 BP 85 EP 104 PG 20 WC Engineering, Marine; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BG03D UT WOS:A1996BG03D00006 ER PT B AU Blackburn, JM Vassilaros, M Brandemarte, A Fox, A Franke, G AF Blackburn, JM Vassilaros, M Brandemarte, A Fox, A Franke, G BE DeNale, R TI The effects of thermal cycling on ULCB weld metal SO WELDING AND WELD AUTOMATION IN SHIPBUILDING LA English DT Proceedings Paper CT Symposium on Welding and Weld Automation in Shipbuilding, at the Materials Week 95 CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Struct Mat Div C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,ANNAPOLIS,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-322-8 PY 1996 BP 167 EP 186 PG 20 WC Engineering, Marine; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BG03D UT WOS:A1996BG03D00011 ER PT B AU Juers, RH McConnell, F AF Juers, RH McConnell, F BE DeNale, R TI Electrogas welding of advanced double hull subassemblies SO WELDING AND WELD AUTOMATION IN SHIPBUILDING LA English DT Proceedings Paper CT Symposium on Welding and Weld Automation in Shipbuilding, at the Materials Week 95 CY OCT 29-NOV 02, 1995 CL CLEVELAND, OH SP Minerals Met & Mat Soc, Struct Mat Div C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,ANNAPOLIS,MD 21402. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS, METALS & MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 BN 0-87339-322-8 PY 1996 BP 229 EP 254 PG 26 WC Engineering, Marine; Metallurgy & Metallurgical Engineering SC Engineering; Metallurgy & Metallurgical Engineering GA BG03D UT WOS:A1996BG03D00015 ER PT J AU Juers, RH McConnell, F AF Juers, RH McConnell, F TI Electrogas welding of advanced double-hull subassemblies SO WELDING JOURNAL LA English DT Article C1 METRO MACHINE CORP,NORFOLK,VA. RP Juers, RH (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,NORFOLK,VA 23511, USA. NR 2 TC 1 Z9 1 U1 0 U2 0 PU AMER WELDING SOC PI MIAMI PA PO BOX 351040, MIAMI, FL 33135 SN 0043-2296 J9 WELD J JI Weld. J. PD JAN PY 1996 VL 75 IS 1 BP 45 EP 53 PG 9 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA TN960 UT WOS:A1996TN96000007 ER PT J AU Anuta, MA Lozier, DW Turner, PR AF Anuta, MA Lozier, DW Turner, PR TI Level-index arithmetic on a massively parallel computer SO ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK LA English DT Article; Proceedings Paper CT 3rd International Congress on Industrial and Applied Mathematics (ICIAM 95) CY JUL 03-07, 1995 CL HAMBURG, GERMANY SP Gesell Angew Math & Mech AB In this paper we describe the implementation of the level-index; LI, and symmetric level-index, SLI; arithmetics on a massively parallel computer - specifically a Mas Par MP-1 with 4096 processors. The implementation is written in the parallel language MPL which is a massively parallel extension of ANSI C. The internal arithmetic of the LI and SLI arithmetic algorithms is fixed-point fractional arithmetic. This is described first and is followed by a brief review of the level-index representation and its arithmetic. A modified version of the original SLI arithmetic algorithm, which is better suited to a massively parallel implementation, is presented as an introduction to the SLI implementation. A description of some of its advantages completes the paper. C1 NIST,GAITHERSBURG,MD 20899. USN ACAD,DEPT MATH,ANNAPOLIS,MD 21402. RP Anuta, MA (reprint author), CRAY RES INC,CALVERTON,MD 20705, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AKADEMIE VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0044-2267 J9 Z ANGEW MATH MECH JI Z. Angew. Math. Mech. PY 1996 VL 76 SU 1 BP 339 EP 340 PG 2 WC Mathematics, Applied; Mechanics SC Mathematics; Mechanics GA VG254 UT WOS:A1996VG25400089 ER PT J AU Anuta, MA Lozier, DW Turner, PR AF Anuta, MA Lozier, DW Turner, PR TI The MasPar MP-1 as a computer arithmetic laboratory SO ZEITSCHRIFT FUR ANGEWANDTE MATHEMATIK UND MECHANIK LA English DT Article; Proceedings Paper CT 3rd International Congress on Industrial and Applied Mathematics (ICIAM 95) CY JUL 03-07, 1995 CL HAMBURG, GERMANY SP Gesell Angew Math & Mech AB this paper we describe a computer arithmetic project which is being undertaken using a massively parallel SIMD array processor. The paper begins with a brief overview of the DEC/MasPar MP-1 system, its architecture and advantages for this work. The main part of the paper is concerned with some of the arithmetic systems which are being implemented in this laboratory. These fall into two primary classes integer and fixed-point arithmetics; and real number representation and arithmetic. A more complete introduction to this project and an extensive bibliography can be found in [1]. C1 NIST,GAITHERSBURG,MD 20899. USN ACAD,DEPT MATH,ANNAPOLIS,MD 21402. RP Anuta, MA (reprint author), NIST,GAITHERSBURG,MD 20899, USA. NR 3 TC 0 Z9 0 U1 0 U2 0 PU AKADEMIE VERLAG GMBH PI BERLIN PA MUHLENSTRASSE 33-34, D-13187 BERLIN, GERMANY SN 0044-2267 J9 Z ANGEW MATH MECH JI Z. Angew. Math. Mech. PY 1996 VL 76 SU 1 BP 341 EP 342 PG 2 WC Mathematics, Applied; Mechanics SC Mathematics; Mechanics GA VG254 UT WOS:A1996VG25400090 ER PT J AU Makeig, S Jung, TP AF Makeig, S Jung, TP TI Changes in alertness are a principal component of variance in the EEG spectrum SO NEUROREPORT LA English DT Article DE EEG; electroencephalogram; alertness; vigilance; auditory detection; principal component analysis (PCA); spectrum AB MINUTE-scale fluctuations in the normalized EEG log spectrum, when correlated with concurrent changes in level of performance on a sustained auditory detection task, showed that a single principal component of EEG spectral variance is linearly related to minute-scale changes in detection performance. The particular EEG frequencies at which this coupling is expressed are similar for most subjects under a range of task conditions, and match those recently reported from analysis of verbal self-reports during drowsiness. The one-dimensional relationship between detection performance and the EEG spectrum confirms quantitatively the intuitive assumption that minute-scale changes in behavioral alertness during drowsiness are predominantly linked to changes in global brain dynamics along a single dimension of psychophysiological arousal. C1 SALK INST BIOL STUDIES,COMPUTAT NEUROBIOL LAB,LA JOLLA,CA. RP Makeig, S (reprint author), USN,HLTH RES CTR,POB 85122,SAN DIEGO,CA 92186, USA. NR 10 TC 135 Z9 138 U1 0 U2 7 PU RAPID SCIENCE PUBLISHERS PI LONDON PA 2-6 BOUNDARY ROW, LONDON, ENGLAND SE1 8NH SN 0959-4965 J9 NEUROREPORT JI Neuroreport PD DEC 29 PY 1995 VL 7 IS 1 BP 213 EP 216 DI 10.1097/00001756-199512000-00051 PG 4 WC Neurosciences SC Neurosciences & Neurology GA TX369 UT WOS:A1995TX36900051 PM 8742454 ER PT J AU WILLETTE, PN KISER, WR AF WILLETTE, PN KISER, WR TI ZINC SUPPLEMENTATION DURING PREGNANCY SO JAMA-JOURNAL OF THE AMERICAN MEDICAL ASSOCIATION LA English DT Letter RP WILLETTE, PN (reprint author), USN HOSP,JACKSONVILLE,FL, USA. NR 2 TC 0 Z9 0 U1 0 U2 0 PU AMER MEDICAL ASSOC PI CHICAGO PA 515 N STATE ST, CHICAGO, IL 60610 SN 0098-7484 J9 JAMA-J AM MED ASSOC JI JAMA-J. Am. Med. Assoc. PD DEC 27 PY 1995 VL 274 IS 24 BP 1909 EP 1909 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA TL169 UT WOS:A1995TL16900018 PM 8568975 ER PT J AU Vurgaftman, I Singh, J AF Vurgaftman, I Singh, J TI Spatial and spectral characteristics of spontaneous emission from semiconductor quantum wells in microscopic cylindrical cavities SO APPLIED PHYSICS LETTERS LA English DT Article ID LASERS AB The spontaneous emission rate from an In0.2Ga0.8As quantum well in a cylindrical dielectric cavity with submicron radii and without mirrors in the emission plane is calculated based on a rigorous description of the cavity modes and their interaction with the 2D electronic system. The rate is suppressed for radii much less than the peak optical wavelength (r(cav) much less than lambda/n), enhanced by up to a factor of approximate to 8 for r(cav) approximate to lambda/n, and remains similar to its value in the absence of a cavity for r(cav) much greater than lambda/n. The emitted light produces a highly collimated vertical beam in the intermediate region with the majority of photons emitted into the guided cavity modes, and its spatial distribution broadens dramatically in the smallest structures. The global spectral width of spontaneous emission in cavities that can presently be fabricated is largely unaffected by the introduction of lateral dielectric boundaries. (C) 1995 American Institute of Physics. C1 UNIV MICHIGAN,DEPT ELECT ENGN & COMP SCI,ANN ARBOR,MI 48109. RP Vurgaftman, I (reprint author), USN,RES LAB,CODE 5613,WASHINGTON,DC 20375, USA. NR 11 TC 7 Z9 7 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 25 PY 1995 VL 67 IS 26 BP 3865 EP 3867 DI 10.1063/1.115299 PG 3 WC Physics, Applied SC Physics GA TX516 UT WOS:A1995TX51600011 ER PT J AU Salvino, LW Cawley, R Grebogi, C Yorke, JA AF Salvino, LW Cawley, R Grebogi, C Yorke, JA TI Predictability in time series SO PHYSICS LETTERS A LA English DT Article ID DEPENDENT-VARIABLES; CHAOS; DETERMINISM; NOISE AB We introduce a technique to characterize and measure predictability in time series. The technique allows one to formulate precisely a notion of the predictable component of given time series. We illustrate our method for both numerical and experimental time series data. C1 UNIV MARYLAND,INST PLASMA RES,COLLEGE PK,MD 20742. UNIV MARYLAND,INST PHYS SCI & TECHNOL,COLLEGE PK,MD 20742. UNIV MARYLAND,DEPT MATH,COLLEGE PK,MD 20742. RP Salvino, LW (reprint author), USN,CTR SURFACE WARFARE,DAHLGREN DIV,INFORMAT SCI & SYST BRANCH,10901 NEW HAMPSHIRE AVE,SILVER SPRING,MD 20903, USA. NR 22 TC 4 Z9 5 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0375-9601 J9 PHYS LETT A JI Phys. Lett. A PD DEC 25 PY 1995 VL 209 IS 5-6 BP 327 EP 332 DI 10.1016/0375-9601(95)00871-3 PG 6 WC Physics, Multidisciplinary SC Physics GA TN925 UT WOS:A1995TN92500012 ER PT J AU Shadaram, M Medrano, J Pappert, SA Berry, MH Gookin, DM AF Shadaram, M Medrano, J Pappert, SA Berry, MH Gookin, DM TI Technique for stabilizing the phase of the reference signals in analog fiber-optic links SO APPLIED OPTICS LA English DT Article DE phase stabilization; standard frequency distribution; fiber-optic phase modulator ID DELAY-LINE; VIDEO AB The effects of temperature and longitudinal stress on the phase delay of reference signals in a fiber-optic link are discussed. A feedback system that uses a fiber-optic phase modulator is used to compensate for the phase fluctuations of a reference signal in the link. The phase deviations of a 50-MHz reference frequency that are caused by temperature variations of the link is reduced by more than 95% on optimization of the correction system. The advantages of this technique are that the fiber-optic phase modulator has a greater stability compared with the electronic phase modulators, and signal conversions from electric to optic and optic to electric are avoided. (C) 1995 Optical Society of America C1 USN,COMMAND CONTROL & OCEAN SURVEILLANCE CTR,RES DEV TEST & EVALUAT DIV,SAN DIEGO,CA 92152. RP Shadaram, M (reprint author), UNIV TEXAS,DEPT ELECT & COMP ENGN,EL PASO,TX 79968, USA. NR 15 TC 10 Z9 10 U1 0 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD DEC 20 PY 1995 VL 34 IS 36 BP 8283 EP 8288 DI 10.1364/AO.34.008283 PG 6 WC Optics SC Optics GA TP714 UT WOS:A1995TP71400006 PM 21068946 ER PT J AU Taylor, SW Ross, MM Waite, JH AF Taylor, SW Ross, MM Waite, JH TI Novel 3,4-Di- and 3,4,5-trihydroxyphenylalanine-containing polypeptides from the blood cells of the ascidians Ascidia ceratodes and Molgula manhattensis SO ARCHIVES OF BIOCHEMISTRY AND BIOPHYSICS LA English DT Article DE ascidian; DOPA; MALDI-MS; vanadium; TOPA; tunichromes; protease-resistance ID HALOCYNTHIA-RORETZI; 3,4-DIHYDROXYPHENYLALANINE-CONTAINING PEPTIDES; MASS-SPECTROMETRY; VANADIUM; TUNICHROME; PROTEIN; FERREASCIDIN; HEMOCYTES AB Acetic acid urea extraction of the blood cells of two ascidian species yielded four novel families of polypeptides (3500-5300 Da) containing 3,4-dihydroxyphenylalanine (DOPA) and 3,4, 5-trihydrogyphenylalanine (TOPA) from the Phlebobranch Ascidia ceratodes and two DOPA proteins (9-10 kDa) from the Stolidobranch Molgula manhattensis. 3,4,5-Trihydroxyphenylalanine residues have not been found previously in polypeptides in any biological system, The DOPA content of the M. manhattensis proteins is the highest yet reported for a naturally occurring DOPA protein. The successful isolation of proteinaceous components from A. ceratodes blood cells requires the incorporation of high concentrations of complexing agent in the extraction buffers to inactivate vanadium(III) which forms intractable organometallic polymers, The A. ceratodes blood cell polypeptides are all rich in alanine and TOPA residues, have neutral to basic pi values, and, while all give single bands on acid urea-polyacrylamide electrophoresis, they exhibit extensive microheterogeneity, This is reflected by their large molecular weight distribution as determined by matrix-assisted laser desorption ionization-mass spectrometry, the variation in the ratio of their 280-nm absorption to chromophores of unknown structure in the polypeptide's electronic absorption spectra, and the N-terminal sequence analysis. The two M. manhattensis proteins consist largely of four amino acids (alanine, valine, phenylalanine, and DOPA) with DOPA accounting for upward of 40 mol%, Both give an N-terminus of Ala-Phe-Tyr before resisting further progress by Edman degradation. Proteins and polypeptides from both ascidians are extremely resistant to proteases, a property which, while hampering characterization by sequence analysis, appears ideally suited to their proposed function of forming an impervious hemostat at the site of vascular injury, The yield of proteins and polypeptides relative to tunichromes appears to be seasonally dependent, The presence of DOPA and TOPA moieties in the proteins and polypeptides implicates them, as well as the tunichromes, as potential metal-sequestering agents. (C) 1995 Academic Press, Inc. C1 UNIV DELAWARE,DEPT CHEM & BIOCHEM,NEWARK,DE 19716. UNIV DELAWARE,COLL MARINE STUDIES,NEWARK,DE 19716. USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. FU PHS HHS [2R01 10042] NR 43 TC 27 Z9 28 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 0003-9861 J9 ARCH BIOCHEM BIOPHYS JI Arch. Biochem. Biophys. PD DEC 20 PY 1995 VL 324 IS 2 BP 228 EP 240 DI 10.1006/abbi.1995.0035 PG 13 WC Biochemistry & Molecular Biology; Biophysics SC Biochemistry & Molecular Biology; Biophysics GA TN196 UT WOS:A1995TN19600005 PM 8554314 ER PT J AU RAMATY, R MANDZHAVIDZE, N KOZLOVSKY, B MURPHY, RJ AF RAMATY, R MANDZHAVIDZE, N KOZLOVSKY, B MURPHY, RJ TI SOLAR ATMOSPHERIC ABUNDANCES AND ENERGY CONTENT IN FLARE-ACCELERATED IONS FROM GAMMA-RAY SPECTROSCOPY SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCELERATION OF PARTICLES; NUCLEAR REACTIONS, NUCLEOSYNTHESIS, ABUNDANCES; SUN, ABUNDANCES; SUN, FLARES; SUN, X-RAYS, GAMMA RAYS AB We used SMM gamma-ray data from 19 solar flares to study ambient elemental abundances in the solar atmosphere. We found that the abundance ratios of low FIP (first ionization potential) to high FIP elements are enhanced relative to photospheric abundances, but that the variability of these ratios from flare to flare is limited to a narrower range than that inferred from EUV and X-ray observations. The mean of the gamma-ray derived Mg/O (a low FIP to high FIP element abundance ratio) is coronal and the individual values are always higher than the photospheric Mg/O. The value of Ne/O (similar to 0.25) is higher than the coronal value of 0.15 obtained from solar energetic particle data, but not inconsistent with some EUV and X-ray determinations. To avoid Ne/O higher than 0.3 a steep accelerated particle energy spectrum extending down to about 1 MeV per nucleon is needed. This implies that a large fraction of the available flare energy is contained in accelerated ions. C1 TEL AVIV UNIV,SCH PHYS & ASTRON,RAMAT AVIV,ISRAEL. USN,RES LAB,EO HULBURT CTR ASTROPHYS,WASHINGTON,DC 20375. RP RAMATY, R (reprint author), NASA,GODDARD SPACE FLIGHT CTR,HIGH ENERGY ASTROPHYS LAB,GREENBELT,MD 20771, USA. NR 14 TC 119 Z9 119 U1 0 U2 1 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 20 PY 1995 VL 455 IS 2 BP L193 EP L196 PN 2 PG 4 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TK126 UT WOS:A1995TK12600024 ER PT J AU Pickett, WE Singh, DJ AF Pickett, WE Singh, DJ TI Magnetoelectronic and magnetostructural coupling in the La1-xCaxMnO3 system. SO EUROPHYSICS LETTERS LA English DT Article AB Phenomenological models of the colossal magnetoresistance,, manganites have emphasized a local picture for the Mn ion, and little attention has been given to the effects of Mn d-O p hybridization. We present self-consistent local spin-density electronic-structure studies that properly account for hybridization, and find that the very different structural and antiferromagnetic symmetries of the ground states of CaMnO3 and LaMnO3 are obtained. In the CMR regime ferromagnetic coupling is preferred, as observed, and strongly hybridized bands leading to a partially open-shell oxygen ion in the majority channel accounts for good metallic conduction at low temperature. Strong local environment effects on the Mn ion arising from cation charge differences (La3+, Ca2+) suggest Anderson localization of the low density of minority carriers, leading to half-metallic regions. This feature, together with strong spin dependence of covalent hybridization, may provide the mechanism for the semiconducting behavior at high temperature. RP Pickett, WE (reprint author), USN, RES LAB, COMPLEX SYST THEORY BRANCH, WASHINGTON, DC 20375 USA. RI Singh, David/I-2416-2012 NR 30 TC 38 Z9 39 U1 0 U2 1 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0295-5075 J9 EUROPHYS LETT JI Europhys. Lett. PD DEC 20 PY 1995 VL 32 IS 9 BP 759 EP 764 DI 10.1209/0295-5075/32/9/010 PG 6 WC Physics, Multidisciplinary SC Physics GA TN742 UT WOS:A1995TN74200010 ER PT J AU KRATZKE, RA OTTERSON, GA LINCOLN, CE EWING, S OIE, H GERADTS, J KAYE, FJ AF KRATZKE, RA OTTERSON, GA LINCOLN, CE EWING, S OIE, H GERADTS, J KAYE, FJ TI IMMUNOHISTOCHEMICAL ANALYSIS OF THE P16(INK4) CYCLIN-DEPENDENT KINASE INHIBITOR IN MALIGNANT MESOTHELIOMA SO JOURNAL OF THE NATIONAL CANCER INSTITUTE LA English DT Article ID RETINOBLASTOMA GENE-PRODUCT; CELL LUNG-CANCER; PROTEIN; PHOSPHORYLATION; IDENTIFICATION; SUPPRESSION; DELETIONS; 9P AB Background: The identification in 1994 of the CDKN2 gene as a target for mutations in a wide range of human cancers, including malignant mesothelioma, has been controversial because subsequent studies have detected a lower frequency of CDKN2 gene mutations in primary tumors than in cultured cell lines, These reports raised the hypothesis that another gene, distinct from CDKN2, might be the target of the chromosome 9p21 deletions frequently observed in these tumors, Purpose: To address whether inactivation of CDKN2 function is an essential event in the etiology of malignant mesothelioma, we examined p16(INK4) protein expression in primary thoracic mesotheliomas, in nonmalignant pleural tissues, and in independent mesothelioma cell lines, We also studied the growth rate of tumor cell lines following stable transfection of CDKN2 gene, Methods: Retinoblastoma (Rb) and p16(INK4) protein expression was determined by immunohistochemical analysis from archival paraffin specimens of 12 primary thoracic mesotheliomas and a nonmalignant pleural biopsy specimen, In addition, protein immunoblot analysis for Rb and p16(INK4) expression was conducted on 15 independent mesothelioma cell lines, and the ability of a transfected CDKN2 gene to suppress the growth of the mesothelioma cell lines H2373 and H2461 in vitro was examined, Results: We demonstrated abnormal p16(INK4) expression in 12 of 12 primary mesothelioma specimens and in 15 of 15 mesothelioma cell lines, All tumor specimens and the tumor cell lines showed expression of wild-type Rb protein, In addition, we have confirmed the ability of a transfected CDKN2 gene to suppress growth of two independent mesothelioma cell lines, Conclusions: Immunohistochemical analysis of the p16(INK4) gene product is feasible in archival biopsy samples, With this analysis, CDKN2 gene inactivation can be determined in tumors that are contaminated with nonmalignant cells, Furthermore, since loss of p16(INK4) protein expression can result from both genetic (gene mutations) and epigenetic (abnormal DNA hypermethylation) mechanisms, as we and others have shown recently, examination of protein expression is a highly sensitive method for analyzing the CDKN2 status in large numbers of tumor samples, Implications: This study suggests that inactivation of the CDKN2 gene is an essential step in the etiology of malignant mesotheliomas, Defining the role of the p16(INK4):Rb tumor suppressor pathway and its immediate downstream substrates will be an important goal in designing future therapeutic strategies. C1 USN,NCI,DIV CANC TREATMENT,ONCOL BRANCH,BETHESDA,MD. DEPT VET AFFAIRS MED CTR,DIV HEMATOL ONCOL,MINNEAPOLIS,MN. UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20814. RED CROSS BLOOD CTR,HOLLAND LABS,ROCKVILLE,MD. VET ADM MED CTR,DEPT PATHOL,MINNEAPOLIS,MN. UNIV N CAROLINA,DEPT PATHOL,CHAPEL HILL,NC. RI kaye, frederic/E-2437-2011 NR 42 TC 106 Z9 108 U1 0 U2 1 PU NATL CANCER INSTITUTE PI BETHESDA PA 9030 OLD GEORGETOWN RD, BETHESDA, MD 20814 SN 0027-8874 J9 J NATL CANCER I JI J. Natl. Cancer Inst. PD DEC 20 PY 1995 VL 87 IS 24 BP 1870 EP 1875 DI 10.1093/jnci/87.24.1870 PG 6 WC Oncology SC Oncology GA TK066 UT WOS:A1995TK06600013 PM 7494231 ER PT J AU Darko, DF Miller, JC Gallen, C White, J Koziol, J Brown, SJ Hayduk, R Atkinson, JH Assmus, J Munnell, DT Naitoh, P McCutchan, JA Mitler, MM AF Darko, DF Miller, JC Gallen, C White, J Koziol, J Brown, SJ Hayduk, R Atkinson, JH Assmus, J Munnell, DT Naitoh, P McCutchan, JA Mitler, MM TI Sleep electroencephalogram delta-frequency amplitude, night plasma levels of tumor necrosis factor alpha, and human immunodeficiency virus infection SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID SLOW-WAVE SLEEP; HIV-INFECTION; TNF-ALPHA; PHASE-I; SERUM; BLOOD; INTERLEUKIN-1; AIDS; IL-1; EEG AB We tested the hypothesis that increases in tumor necrosis factor alpha (TNF-alpha) induced by human immunodeficiency virus (HIV) are associated with the increases in slow-wave sleep seen in early HIV infection and the decrease with sleep fragmentation seen in advanced HIV infection, Nocturnal sleep disturbances and associated fatigue contribute to the disability of MV infection, TNF-alpha causes fatigue in clinical use and promotes slow-wave sleep in animal models, With slow progress toward a vaccine and weak effects from current therapies, efforts are directed toward extending productive life of HIV-infected individuals and shortening the duration of disability in terminal illness, We describe previously unrecognized nocturnal cyclic variations in plasma levels of TNF-alpha in all subjects, In 6 of 10 subjects (1 control subject, 3 HIV-seropositive patients with CD4(+) cell number > 400 cells per mu l, and 2 HIV-positive patients with CD4(+) cell number < 400 cells per mu l), these fluctuations in TNF-alpha were coupled to the known rhythm of electroencephalogram delta amplitude (square root of power) during sleep. This coupling was not present in 3 HIV-positive subjects with CD4(+) cell number < 400 cells per pi and 1 control subject, In 5 HIV subjects with abnormally low CD4(+) cell counts (< 400 cells per mu l), the number of days since seroconversion correlated significantly with low correlation between TNF-alpha and delta amplitude, We conclude that a previously unrecognized normal, physiological coupling exists between TNF-alpha and delta amplitude during sleep and that the lessened likelihood of this coupling in progressive HIV infection may be important in understanding fatigue-related symptoms and disabilities. C1 SCRIPPS RES INST, COMM SLEEP DISORDERS RES, DEPT BIOL MOLEC, LA JOLLA, CA 92037 USA. SCRIPPS CLIN, DEPT MED, LA JOLLA, CA 92037 USA. UNIV CALIF SAN DIEGO, SCH MED, LA JOLLA, CA 92093 USA. USN, HLTH RES CTR, SAN DIEGO, CA 92186 USA. RP Darko, DF (reprint author), SCRIPPS RES INST, COMM SLEEP DISORDERS RES, DEPT NEUROPHARMACOL, LA JOLLA, CA 92037 USA. FU Intramural NIH HHS [Z99 NS999999]; NCRR NIH HHS [M01 RR00833]; NIMH NIH HHS [P50 MH47680, MH42762] NR 44 TC 74 Z9 76 U1 0 U2 3 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD DEC 19 PY 1995 VL 92 IS 26 BP 12080 EP 12084 DI 10.1073/pnas.92.26.12080 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA TL421 UT WOS:A1995TL42100029 PM 8618848 ER PT J AU Fang, GW Burger, H Grimson, R Tropper, P Nachman, S Mayers, D Weislow, O Moore, R Reyelt, C Hutcheon, N Baker, D Weiser, B AF Fang, GW Burger, H Grimson, R Tropper, P Nachman, S Mayers, D Weislow, O Moore, R Reyelt, C Hutcheon, N Baker, D Weiser, B TI Maternal plasma human immunodeficiency virus type 1 RNA level: A determinant and projected threshold for mother-to-child transmission SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article DE quantitative competitive PCR; vertical transmission; perinatal infection ID POLYMERASE CHAIN-REACTION; CLINICAL-TRIALS GROUP; REVERSE-TRANSCRIPTASE; INFECTION; HIV-1; QUANTITATION; DNA AB To prevent mother-to-child human immunodeficiency virus type 1 (HIV-1) transmission, it is important to identify its determinants, Because HIV-1 RNA levels can be reduced by antiviral therapy, we examined the role of maternal plasma HIV-1 RNA level in mother-to-child transmission, We used quantitative competitive PCR to measure HIV-1 RNA in 30 infected pregnant women and then followed their infants prospectively; 27% of the women transmitted HIV-1 to their infants and maternal plasma HIV-1 RNA level correlated strikingly with transmission. Eight of the 10 women with the highest HIV-1 RNA levels at delivery (190,400-1,664,100 copies per mi of plasma) transmitted, while none of the 20 women with lower levels (500-155,800 copies per mi) did (P = 0.0002), Statistical analysis of the distribution of HIV-1 RNA loads in these 30 women projected a threshold for mother-to-child transmission in a larger population; the probability of a woman with a viral RNA level of less than or equal to 100,000 copies per mi not transmitting is predicted to be 97%. Examination of serial HIV-1 RNA levels during pregnancy showed that viral load was stable in women who did not initiate or change antiviral therapy. These data identify maternal plasma HIV-1 RNA level as a major determinant of mother-to-child transmission and suggest that quantitation of HIV-1 RNA may predict the risk of transmission. C1 ALBANY MED COLL,DEPT MED,ALBANY,NY 12208. SUNY STONY BROOK,DEPT PREVENT MED,STONY BROOK,NY 11794. SUNY STONY BROOK,DEPT PEDIAT,STONY BROOK,NY 11794. SUNY STONY BROOK,DEPT OBSTET & GYNECOL,STONY BROOK,NY 11794. ST JOSEPHS MED CTR,DEPT OBSTET & GYNECOL,PATERSON,NJ 07503. ST JOSEPHS MED CTR,DEPT MED,PATERSON,NJ 07503. ST JOSEPHS MED CTR,DEPT PEDIAT,PATERSON,NJ 07503. WALTER REED ARMY INST RES,ROCKVILLE,MD 20850. SRA TECHNOL,ROCKVILLE,MD 20850. USN,MED RES INST,ROCKVILLE,MD 20850. RP Fang, GW (reprint author), NEW YORK STATE DEPT HLTH,WADSWORTH CTR,ALBANY,NY 12208, USA. FU NIAID NIH HHS [UO1 AI35004, R01 AI33334] NR 23 TC 150 Z9 152 U1 0 U2 5 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD DEC 19 PY 1995 VL 92 IS 26 BP 12100 EP 12104 DI 10.1073/pnas.92.26.12100 PG 5 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA TL421 UT WOS:A1995TL42100033 PM 8618852 ER PT J AU Kaatz, FH Harris, VG Kurihara, L Rolison, DR Edelstein, AS AF Kaatz, FH Harris, VG Kurihara, L Rolison, DR Edelstein, AS TI Slowing the oxidation of Cu in Cu-Co nanocrystals by Co surface passivation SO APPLIED PHYSICS LETTERS LA English DT Article ID FCC COBALT FILMS; GIANT MAGNETORESISTANCE AB Heating chemically prepared nanocrystals of Cu80Co20 causes Co to precipitate preferentially on the surface of the Cu nanocrystals. X-ray diffraction and x-ray photoelectron spectroscopies show that the Co significantly retards the oxidation of the Cu nanocrystals. (C) 1995 American Institute of Physics. C1 USN,RES LAB,WASHINGTON,DC 20375. RI Harris, Vincent/A-8337-2009 NR 12 TC 4 Z9 4 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 18 PY 1995 VL 67 IS 25 BP 3807 EP 3809 DI 10.1063/1.115390 PG 3 WC Physics, Applied SC Physics GA TK759 UT WOS:A1995TK75900046 ER PT J AU PIERSON, SW AF PIERSON, SW TI LENGTH-SCALE-DEPENDENT LAYER DECOUPLING IN LAYERED SYSTEMS SO PHYSICAL REVIEW LETTERS LA English DT Article ID PHASE-TRANSITIONS; SUPERCONDUCTORS; VORTEX AB Layer decoupling in the critical region of quasi-two-dimensional systems is addressed in zero magnetic field. The temperature and length-scale dependence of the renormalized value of the interlayer coupling is studied in a system where only the vortices are treated and where these topological excitations are modeled as a gas of charged particles. It is found that for temperatures greater than the transition temperature T-c and for lengths larger than a characteristic length scale l(3D/2D)(T) the layers become decoupled. l(3D/2D)(T) is associated with an interlayer screening length, which is infinite at T-c and drops to negligible values above this temperature. RP PIERSON, SW (reprint author), USN,RES LAB,CODE 6877,WASHINGTON,DC 20375, USA. NR 17 TC 21 Z9 21 U1 0 U2 0 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0031-9007 J9 PHYS REV LETT JI Phys. Rev. Lett. PD DEC 18 PY 1995 VL 75 IS 25 BP 4674 EP 4677 DI 10.1103/PhysRevLett.75.4674 PG 4 WC Physics, Multidisciplinary SC Physics GA TK883 UT WOS:A1995TK88300031 ER PT J AU TANG, XD CALLAHAN, JH ZHOU, P VERTES, A AF TANG, XD CALLAHAN, JH ZHOU, P VERTES, A TI NONCOVALENT PROTEIN-OLIGONUCLEOTIDE INTERACTIONS MONITORED BY MATRIX-ASSISTED LASER DESORPTION/IONIZATION MASS-SPECTROMETRY SO ANALYTICAL CHEMISTRY LA English DT Article ID NUCLEIC-ACIDS; DESORPTION; ULTRAVIOLET AB Positive ion mode matrix-assisted laser desorption/ionization mass spectrometry (MALDI-MS) was used to explore nonspecific interactions between proteins and oligonucleotides. The formation of noncovalent complexes showed correlation with the type of oligonucleotide bases and with the amino acid composition of the proteins, Among the four DNA homooligomers, abundant protein-nucleic acid complexes were detected for pd(T)(n), whereas negligible attachment was evident for pd(A)(n), pd(C)(n), and pd(G)(n). Mixed base sequence nucleic acids (pd(AGCTCAGCTT) and d(TTAGCAGCTT)) also showed affinity to Arg-Lys, The protein affinity of pd(T)(n) turned out to be nonspecific and produced a larger variety of complexes when the number of basic residues in the protein was increased. Complexation of pd(T)(n) with small basic dipeptides (Arg-Lys or His-His) led to significant improvement in the mass resolution for positive ions. For example, the mass resolution of the pd(T)(20)/Arg-Lys complex exhibited about 4 times improvement over pd(T)(20) alone. The protein-oligonucleotide interactions were also pH and matrix dependent. Lowering the pH from its original value (pH = 1.7) led to diminishing complex related signal, whereas increasing the pH resulted in the appearance of a larger variety of complexes. 2,5-Dihydroxybenzoic acid matrix demonstrated much greater tendency to produce complex ions than did the three other matrix materials we tested. A possible explanation of the observed phenomena was based on pH-controlled ion pair formation between oligonucleotides and proteins. C1 GEORGE WASHINGTON UNIV,DEPT CHEM,WASHINGTON,DC 20052. USN,RES LAB,DIV CHEM,WASHINGTON,DC 20375. CRUACHEM INC,DULLES,VA 20166. RI Vertes, Akos/B-7159-2008 OI Vertes, Akos/0000-0001-5186-5352 NR 31 TC 62 Z9 65 U1 1 U2 6 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0003-2700 J9 ANAL CHEM JI Anal. Chem. PD DEC 15 PY 1995 VL 67 IS 24 BP 4542 EP 4548 DI 10.1021/ac00120a018 PG 7 WC Chemistry, Analytical SC Chemistry GA TK585 UT WOS:A1995TK58500018 PM 8633787 ER PT J AU Burstein, L Shapira, Y Bennett, BR delAlamo, JA AF Burstein, L Shapira, Y Bennett, BR delAlamo, JA TI Surface photovoltage spectroscopy of InxAl1-xAs epilayers SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID MOLECULAR-BEAM EPITAXY; ELECTRICAL-PROPERTIES; METAL INTERFACES; STRAINED LAYERS; DEEP LEVELS; INP; GAP; STATES; INGAAS; INALAS AB The surface and interface electronic structure of mismatched InxAl1-xAs epitaxial layers grown by molecular beam epitaxy on InP have been investigated using surface photovoltage spectroscopy. The crystalline structure of the epilayers was also examined by double-crystal x-ray diffraction. For coherently strained layers, only a few gap states are identified. Highly strained samples with inferior crystalline quality, as judged by a broadened x-ray diffraction peak and the absence of Pendellosung fringes, display a rich spectrum of states in the band gap. Some of the states are close to the surface while others are located in the vicinity of the InAlAs/InP heterointerfaces. (C) 1995 American Institute of Physics. C1 USN,RES LAB,WASHINGTON,DC 20375. MIT,CAMBRIDGE,MA 02139. RP Burstein, L (reprint author), TEL AVIV UNIV,FAC ENGN,DEPT ELECT ENGN PHYS ELECTR,IL-69978 RAMAT AVIV,ISRAEL. RI Bennett, Brian/A-8850-2008; OI Bennett, Brian/0000-0002-2437-4213; del Alamo, Jesus/0000-0003-4003-7863 NR 39 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 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 15 PY 1995 VL 78 IS 12 BP 7163 EP 7169 DI 10.1063/1.360425 PG 7 WC Physics, Applied SC Physics GA TK562 UT WOS:A1995TK56200041 ER PT J AU Moore, WJ Holm, RT Yang, MJ Freitas, JA AF Moore, WJ Holm, RT Yang, MJ Freitas, JA TI Infrared dielectric constant of cubic SiC SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB The real dielectric constant for chemical vapor deposition 3C-SiC grown on silicon (Si) has been determined at 300 K and at 5 K from an analytic fit to interference fringes in transmission over the spectral range from the near infrared to the submillimeter region. This technique is capable of high accuracy being limited typically by the sample thickness and accuracy with which the thickness is measured. The resulting real dielectric constant is lower than the values usually attributed to this material. We find: at 300 K epsilon(0)=952 and epsilon(infinity)=6.38; at 5 K epsilon(0)=9.28 and epsilon(infinity)=6.22. In all cases the estimated error is +/-0.8%. The observed ratio epsilon(0)/epsilon(infinity) agrees with the Lyddane-Sachs-Teller relation to 0.1% at 300 K and 0.2% at 5 K. (C) 1995 American Institute of Physics. C1 SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. RP Moore, WJ (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 6 TC 11 Z9 11 U1 1 U2 6 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 15 PY 1995 VL 78 IS 12 BP 7255 EP 7258 DI 10.1063/1.360438 PG 4 WC Physics, Applied SC Physics GA TK562 UT WOS:A1995TK56200056 ER PT J AU Walters, RJ Summers, GP AF Walters, RJ Summers, GP TI Degradation and annealing of electron-irradiated diffused junction InP solar cells SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID LEVEL TRANSIENT SPECTROSCOPY; RADIATION-RESISTANCE; EFFICIENCY AB The degradation and annealing properties of 1 MeV electron-irradiated n(+)p diffused junction InP solar cells are reported in detail. The solar cells were characterized through current-voltage measurements under simulated solar illumination at 1 sun, AMO. The radiation-induced defect spectra were characterized through deep level transient spectroscopy. At fluences up to 10(15) cm(-2) cell degradation was primarily due to a decrease in the short-circuit current I-sc which occurred during the introduction of the hole trap, H4. Most of this degradation could be removed by minority-carrier injection annealing of the H4 defect at temperatures as low as 225 K. At higher irradiation fluences, up to 10(16) cm(-2), cell degradation was dominated by a decrease in both the open-circuit voltage V-oc and the fill factor. This degradation was caused by a large radiation-induced recombination current and by carrier removal which was associated with the introduction of the hole trap H5 and the electron traps EA, EC, and ED. Most of the effects of the recombination current and some of the carrier removal were removed by concurrent injection and thermal annealing between 373 and 400 K where the residual H4 defect concentration and the H5 defect were removed. Essentially full cell recovery was achieved after subsequent annealing between 450 and 500 K where the electron traps also showed a partial annealing stage. Thermal annealing without illumination in the range of 350-500 K showed the same defect annealing stages suggesting that the cell recovery in this temperature range is due solely to thermal annealing. The data are summarized to give a model for the radiation-induced degradation and annealing of these InP solar cells. (C) 1995 American Institute of Physics. C1 UNIV MARYLAND,DEPT PHYS,CATONSVILLE,MD 21228. RP Walters, RJ (reprint author), USN,RES LAB,CODE 6615,WASHINGTON,DC 20375, USA. NR 14 TC 6 Z9 6 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 15 PY 1995 VL 78 IS 12 BP 7368 EP 7375 DI 10.1063/1.360386 PG 8 WC Physics, Applied SC Physics GA TK562 UT WOS:A1995TK56200072 ER PT J AU Hooker, SB Brown, JW Kirwan, AD Lindemann, GJ Mied, RP AF Hooker, SB Brown, JW Kirwan, AD Lindemann, GJ Mied, RP TI Kinematics of a warm-core dipole ring SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID COASTAL TRANSITION ZONE; WESTERN GULF; GEOSTROPHIC VORTICES; EDDY INTERACTION; OCEAN JET; EVOLUTION; EDDIES; VORTEX; MEXICO; INSTABILITY AB The remote sensing and in situ data used by Hooker and Brown [1994] to establish the dipole identity of warm core ring (WCR) 82-B is reexamined. It is found that a rotating barotropic modon [Mied er al., 1992] can be constructed with the same dipole rotation rate, center-to-center vortex separation distance, and peak anticyclonic vorticity as those of WCR 82-B. The model-derived velocity field is used to deform an array of material lines during a rotation period when the dipole is evident in the imagery and agreement between the model and the imagery is good. Specifically, it is observed that at the end of the imaging period, the surface tracer assumes a skewed dipole appearance, in which the line of centers is not perpendicular to the separatrix. Moreover, the separatrix morphology is qualitatively reproduced. Finally, the cyclone assumes an axisymmetric form. An attempt to derive qualitatively similar signatures using only monopole forcing yields results dissimilar from both the advanced very high resolution radiometer imagery and those obtained with the dipole, further confirming the underlying dipole character of WCR 82-B. C1 UNIV MIAMI, ROSENSTIEL SCH MARINE & ATMOSPHER SCI, MIAMI, FL 33149 USA. OLD DOMINION UNIV, NORFOLK, VA 23508 USA. USN, RES LAB, DIV REMOTE SENSING, WASHINGTON, DC 20375 USA. RP NASA, GODDARD SPACE FLIGHT CTR, HYDROSPHER PROC LAB, OCEANS & ICE BRANCH, CODE 971, GREENBELT, MD 20771 USA. RI Hooker, Stanford/E-2162-2012 NR 48 TC 17 Z9 17 U1 1 U2 3 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 USA SN 2169-9275 EI 2169-9291 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD DEC 15 PY 1995 VL 100 IS C12 BP 24797 EP 24809 DI 10.1029/95JC02900 PG 13 WC Oceanography SC Oceanography GA TL341 UT WOS:A1995TL34100008 ER PT J AU Herbers, THC Elgar, S Guza, RT AF Herbers, THC Elgar, S Guza, RT TI Generation and propagation of infragravity waves SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID SURF BEAT; FIELD OBSERVATIONS AB The generation and propagation of infragravity waves (frequencies nominally 0.004-0.04 Hz) are investigated with data from a 24-element, coherent array of pressure sensors deployed for 9 months in 13-m depth, 2 km from shore. The high correlation between observed ratios of upcoast to downcoast energy fluxes in the infragravity (F-up(IG)/F-down(IG)) and swell (F-up(swell)/F-down(swell)) frequency bands indicates that the directional properties of up infragravity waves are strongly dependent on incident swell propagation directions. However F-up(IG)/F-down(IG) is usually much closer to 1 (i,e., comparable upcoast and downcoast fluxes) than is F-up(swell)/F-down(swell), suggesting that upcoast propagating swell drives both upcoast and downcoast propagating infragravity waves. These observations agree well with predictions of a spectral WKB model based on the long-standing hypothesis that infragravity waves, forced by nonlinear interactions of nonbreaking, shoreward propagating swell, are released as free waves in the surf zone and subsequently reflect from the beach. The radiated free infragravity waves are predicted to be directionally broad and predominantly refractively trapped on a gently sloping shelf. The observed ratios F-sea(IG)/F-shore(IG) of the seaward and shoreward infragravity energy fluxes are indeed scattered about the theoretical value 1 for trapped waves when the swell energy is moderate, but the ratios deviate significantly from 1 with both low- and high-energy swell. Directionally narrow, shoreward propagating infragravity waves, observed with low-energy swell, likely have a remote (possibly trans-oceanic) energy source. High values (up to 5) of F-sea(IG)/F-shore(IG), observed with high-energy swell, suggest that high-mode edge waves generated near the shore can be suppressed by nonlinear dissipation processes (e.g., bottom friction) on the shelf. C1 WASHINGTON STATE UNIV,SCH ELECT ENGN & COMP SCI,PULLMAN,WA 99164. UNIV CALIF SAN DIEGO,SCRIPPS INST OCEANOG,CTR COASTAL STUDIES,LA JOLLA,CA 92093. RP Herbers, THC (reprint author), USN,POSTGRAD SCH,DEPT OCEANOG,CODE OCHE,MONTEREY,CA 93943, USA. NR 26 TC 106 Z9 108 U1 2 U2 16 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD DEC 15 PY 1995 VL 100 IS C12 BP 24863 EP 24872 DI 10.1029/95JC02680 PG 10 WC Oceanography SC Oceanography GA TL341 UT WOS:A1995TL34100015 ER PT J AU Teague, WJ Hallock, ZR Jacobs, GA Mitchell, JL AF Teague, WJ Hallock, ZR Jacobs, GA Mitchell, JL TI Kuroshio sea surface height fluctuations observed simultaneously with inverted echo sounders and TOPEX/POSEIDON SO JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS LA English DT Article ID WARM-CORE RING; GEOSAT ALTIMETRY; GULF; VARIABILITY; ENERGETICS; EXTENSION; ATLANTIC; PROFILES AB Sea surface height anomalies measured by inverted echo sounders with pressure gauges (IES/PGs) and TOPEX/POSEIDON are compared at six locations in the northwest Pacific near the Kuroshio where it separates from the Japanese coast. The instruments are positioned along a TOPEX/POSEIDON descending ground track near 35 degrees N, 143 degrees E. Good correlation is found between measurements, with best agreement near the Kuroshio, where the range of sea surface height change is largest. Correlations between IES/PG and TOPEX/POSEIDON sea surface height variations range from 0.70 to 0.97, Tides modeled and removed from the TOPEX/POSEIDON data at the inverted echo sounder sites compare well with tides measured by the IES/PGs. TOPEX/POSEIDON and IES/PG data are complementary in describing mesoscale variability in the Kuroshio region. C1 UNIV COLORADO,COLORADO CTR ASTRODYNAM RES,BOULDER,CO 80309. RP Teague, WJ (reprint author), USN,RES LAB,BAY ST LOUIS,MS 39529, USA. NR 42 TC 12 Z9 14 U1 0 U2 2 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0148-0227 J9 J GEOPHYS RES-OCEANS JI J. Geophys. Res.-Oceans PD DEC 15 PY 1995 VL 100 IS C12 BP 24987 EP 24994 DI 10.1029/95JC01526 PG 8 WC Oceanography SC Oceanography GA TL341 UT WOS:A1995TL34100026 ER PT J AU MASTELLER, EL LEE, KP CARLSON, LM THOMPSON, CB AF MASTELLER, EL LEE, KP CARLSON, LM THOMPSON, CB TI EXPRESSION OF SIALYL LEWIS(X) AND LEWIS(X) DEFINES DISTINCT STAGES OF CHICKEN B-CELL MATURATION SO JOURNAL OF IMMUNOLOGY LA English DT Article ID LIGHT-CHAIN GENE; BURSA; FABRICIUS; ONTOGENY; REARRANGEMENT; DIVERSITY; OLIGOSACCHARIDES; DIVERSIFICATION; PRECURSORS; REPERTOIRE AB Commitment of cells to the B lineage in chickens occurs only during a brief period of embryogenesis, B cell progenitors then progress through discrete developmental stages resulting in the production of mature B cells that are competent to form a functioning humoral immune system in the adult bird. During embryogenesis, chicken B cell precursors undergo tissue and developmental stage-specific changes in cell-surface glycosylation, Immature B cell progenitors that migrate to the bursa of Fabricius express the carbohydrate epitope sialyl Lewis(x). Such cells undergo initial clonal expansion within the bursa without undergoing gene conversion, Beginning between days 15 and 17 of embryogenesis, B cells in the bursa undergo a tissue specific change in surface glycosylation that results in the loss of sialyl Lewis(x) expression and the acquisition of the related carbohydrate structure Lewis(x), Expression of Lewis(x) identifies B lymphocytes that have begun to undergo gene conversion, Before emigration from the bursa, bursal lymphocytes undergo another phenotypic switch in glycosylation and down-regulate Lewis(x) expression, Therefore, developmental switches in glycosylation allow us to distinguish three populations of B cells in the bursa of Fabricius at defined stages of development and suggest that regulation of cell-surface glycosylation plays a role in B cell development in the chicken. C1 UNIV CHICAGO,HOWARD HUGHES MED INST,GWEN KNAPP CTR LUPUS & IMMUNOL RES,CHICAGO,IL 60637. UNIV CHICAGO,DEPT MED,CHICAGO,IL 60637. UNIFORMED SERV UNIV HLTH SCI,BETHESDA,MD 20889. USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889. NIAID,BETHESDA,MD 20892. FU NCI NIH HHS [R37 CA48023] NR 31 TC 29 Z9 30 U1 1 U2 1 PU AMER ASSOC IMMUNOLOGISTS PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0022-1767 J9 J IMMUNOL JI J. Immunol. PD DEC 15 PY 1995 VL 155 IS 12 BP 5550 EP 5556 PG 7 WC Immunology SC Immunology GA TJ631 UT WOS:A1995TJ63100013 PM 7499837 ER PT J AU Fox, AG Hunt, RK Maldia, LC Wang, SW AF Fox, AG Hunt, RK Maldia, LC Wang, SW TI Hot sodium sulphate corrosion of a Nicalon silicon carbide fibre-reinforced lithium aluminosilicate glass-ceramic matrix composite SO JOURNAL OF MATERIALS SCIENCE LA English DT Article ID ELECTRON-MICROSCOPY; INTERFACES; STRENGTH; FIBERS AB The corrosion products arising from the exposure of a Nicalon silicon carbide fibre-reinforced lithium aluminosilicate glass-ceramic matrix composite to molten sodium sulphate at 900 degrees C for 100 h in both oxygen and argon atmospheres were studied by X-ray diffraction (XRD) and scanning and transmission electron microscopy (SEM and TEM respectively). The microstructure of the as-received composite plates was found to be similar to that reported by other workers. The matrix consisted of grains of close to stoichiometric mullite and beta-spodumene and a high silica glass with 20-50 nm wide fibre-matrix interfaces comprising a layer of turbostratic carbon and amorphous silica. The effects of hot sodium sulphate corrosion were found to be very similar in both argon and oxygen but proceeded at a much greater rate in the latter case where it had progressed 100 mu m into the composite and consumed many fibres. XRD studies indicated that mullite had virtually disappeared in the corroded region and this was confirmed by SEM. TEM studies of thin sections cut from near the end of the corroded zone also showed that the matrix had become a very fine mixture of glass and beta-spodumene grains and that the fibre-matrix interface region had grown to ca. 600-800 nm wide. The microstructure of this corroded interface comprised several alternating layers of turbostratic carbon, mixed carbon and amorphous silica and pure carbon, each with widths varying between ca. 100 and 200 nm. This layered structure apparently developed as a result of oxidation of the silicon carbide fibre in the presence of a gradient of oxygen partial pressure that decreased from the matrix across the interface to the fibre. C1 USN,AIR WARFARE CTR,DIV AIRCRAFT,WARMINSTER,PA 18974. RP Fox, AG (reprint author), USN,POSTGRAD SCH,DEPT ENGN MECH,MAT SCI SECT,MONTEREY,CA 93943, USA. NR 22 TC 6 Z9 6 U1 1 U2 5 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 DEC 15 PY 1995 VL 30 IS 24 BP 6161 EP 6170 DI 10.1007/BF00369663 PG 10 WC Materials Science, Multidisciplinary SC Materials Science GA TM964 UT WOS:A1995TM96400006 ER PT J AU Mackey, BL Russell, JN Crowell, JE Butler, JE AF Mackey, BL Russell, JN Crowell, JE Butler, JE TI Effect of surface termination on the electrical conductivity and broad-band internal infrared reflectance of a diamond (110) surface SO PHYSICAL REVIEW B LA English DT Article ID SPECTROSCOPY; RESISTIVITY AB Large variations in the broad-band reflectance (similar to 3.4% per reflection at 5000 cm(-1)) were observed in the multiple-internal-reflection infrared spectrum of a diamond (110) surface upon surface chemical modification. Larger changes in reflectivity were observed for s than for p polarization, consistent with a reflectivity change that resulted from modification of the surface. The effect of surface termination on the electrical conductivity of the diamond (110) surface was measured in vacuo. The bare surface was most conductive (<1.7 x 10(7) Omega/square), followed by the hydrogenated surface (similar to 6.0 x 10(7) Omega/square), and the highly insulating oxidized surface (>10(12) Omega/square). The internal reflectance of diamond decreases as the surface becomes more conductive. C1 UNIV CALIF SAN DIEGO,DEPT CHEM & BIOCHEM,LA JOLLA,CA 92093. RP Mackey, BL (reprint author), USN,RES LAB,CODE 6174,WASHINGTON,DC 20375, USA. RI Butler, James/B-7965-2008; Russell, John/A-3621-2009 OI Butler, James/0000-0002-4794-7176; NR 28 TC 31 Z9 31 U1 0 U2 4 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 DEC 15 PY 1995 VL 52 IS 24 BP 17009 EP 17012 PG 4 WC Physics, Condensed Matter SC Physics GA TN927 UT WOS:A1995TN92700009 ER PT J AU Wang, HL Shah, J Damen, TC Pierson, SW Reinecke, TL Pfeiffer, LN West, K AF Wang, HL Shah, J Damen, TC Pierson, SW Reinecke, TL Pfeiffer, LN West, K TI Carrier-distribution-dependent band-gap renormalization in modulation-doped quantum wells SO PHYSICAL REVIEW B LA English DT Article ID ELECTRON-HOLE PLASMA AB Using transient differential transmission measurements we probe directly the temporal evolution of band-gap renormalization of a photoexcited modulation-doped quantum-well system. The band-gap renormalization is shown to increase while the carriers cool down towards the lattice temperature. The experimental results for the band-gap renormalization are in qualitative agreement with calculations made using the random-phase approximation. C1 USN,RES LAB,WASHINGTON,DC 20375. AT&T BELL LABS,HOLMDEL,NJ 07733. MAX PLANCK INST FESTKORPERFORSCH,D-70569 STUTTGART,GERMANY. AT&T BELL LABS,MURRAY HILL,NJ 07974. RI Wang, Hailin/A-2362-2011 NR 11 TC 14 Z9 14 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD DEC 15 PY 1995 VL 52 IS 24 BP 17013 EP 17016 DI 10.1103/PhysRevB.52.R17013 PG 4 WC Physics, Condensed Matter SC Physics GA TN927 UT WOS:A1995TN92700010 ER PT J AU THIBADO, PM BENNETT, BR TWIGG, ME SHANABROOK, BV WHITMAN, LJ AF THIBADO, PM BENNETT, BR TWIGG, ME SHANABROOK, BV WHITMAN, LJ TI ORIGINS OF INTERFACIAL DISORDER IN GASB/INAS SUPERLATTICES SO APPLIED PHYSICS LETTERS LA English DT Article ID INFRARED DETECTORS AB The interface surfaces of short-period GaSb/InAs superlattices grown by molecular beam epitaxy have been studied in situ with scanning tunneling microscopy. Migration enhanced epitaxy was used at the interfaces in order to control bond type. Interfaces on GaSb(001) are found to be smoother than those on strained InAs(001), and the InSb-like interfaces are smoother than GaAs-like ones. The primary source of disorder at these interfaces appears to be the kinetically determined topography of the growth surfaces, with intermixing playing a secondary role. (C) 1995 American Institute of Physics. RP THIBADO, PM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Bennett, Brian/A-8850-2008; Whitman, Lloyd/G-9320-2011 OI Bennett, Brian/0000-0002-2437-4213; Whitman, Lloyd/0000-0002-3117-1174 NR 18 TC 21 Z9 21 U1 0 U2 2 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 11 PY 1995 VL 67 IS 24 BP 3578 EP 3580 DI 10.1063/1.115323 PG 3 WC Physics, Applied SC Physics GA TJ304 UT WOS:A1995TJ30400020 ER PT J AU PHILLIPS, KJH FELDMAN, U AF PHILLIPS, KJH FELDMAN, U TI PROPERTIES OF COOL FLARES WITH GOES CLASS B5 TO C2 SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE SUN, FLARES; SUN, X-RAYS ID DIELECTRONIC SATELLITE SPECTRA; BRAGG CRYSTAL SPECTROMETER; SOLAR-A; LINES AB Observed parameters for 208 small flares with GOES classification B5 to C2 are discussed using data from the broadband detectors on the Geostationary Operational Environmental Satellites (GOES) and the Bragg Crystal Spectrometer (BCS) on the Yohkoh solar flare spacecraft. Peak temperatures derived from He-like sulfur spectra are in the range 8 +/- 2 10(6) K and are similar to those derived from the ratio of the 1-8 Angstrom and 0.5-4 Angstrom GOES channels, but a little less than those from He-like calcium spectra, showing that even these small flares are non-isothermal. The absence of He-like iron emission shows that the temperatures are less than 14 10(6) K. There is a slight positive correlation between temperature and emission measure from the calcium and sulfur data. Differences in this distribution and that derived for larger flares in a separate study can be reconciled in terms of the fact that temperatures were measured from He-like iron spectra for the larger flares. The emission measure of the flares in our sample are correlated with GOES class. A detailed study of a subset of 20 flares shows that the temperatures generally reach peak flux slightly before (up to 30 s) or coincident with the light curve maximum. It is found that even small flux enhancements which are frequently present are associated with temperature enhancements. C1 USN, RES LAB, EO HULBURT CTR SPACE RES, WASHINGTON, DC 20375 USA. RP PHILLIPS, KJH (reprint author), RUTHERFORD APPLETON LAB, DIV ASTROPHYS, DIDCOT OX11 0QX, OXON, ENGLAND. NR 15 TC 12 Z9 12 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD DEC 10 PY 1995 VL 304 IS 2 BP 563 EP 575 PG 13 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TJ649 UT WOS:A1995TJ64900023 ER PT J AU KNAPP, GR BOWERS, PF YOUNG, K PHILLIPS, TG AF KNAPP, GR BOWERS, PF YOUNG, K PHILLIPS, TG TI RADIOFREQUENCY CONTINUUM EMISSION FROM EVOLVED STARS SO ASTROPHYSICAL JOURNAL LA English DT Article DE PLANETARY NEBULAE, INDIVIDUAL (CRL 915, IRAS 17423-1755); RADIO CONTINUUM, STARS; STARS, AGB AND POST-AGB; STARS, EVOLUTION; STARS, MASS-LOSS ID NEBULA IRAS 21282+5050; PLANETARY-NEBULA; RED-RECTANGLE; CIRCUMSTELLAR ENVELOPES; OPTICAL POSITIONS; MOLECULAR OUTFLOW; BIPOLAR NEBULA; MASS-LOSS; HD-44179; SPECTROSCOPY AB The evolution of stars between the asymptotic giant branch (AGE) and planetary nebula phases was investigated by sensitive radio continuum observations of a sample of 21 evolved stars with high mass-loss rates and extended circumstellar envelopes, in a search for a newly formed compact planetary nebulae. Four were found: two (CRL 618 and IRAS 21282+5050) are well-known young planetary nebulae while the other two (IRAS 17423-1755 and CRL 915, the ''Red Rectangle'') are new detections. These recent observations show that the radio frequency flux of CRL 618 continues to increase. The strength of the radio continuum emission from CRL 915 gives a type of B3 or earlier for the exciting star. Radio continuum emission was detected from four more stars in the sample at an intensity too weak to be due to compact planetary nebulae but too strong to be photospheric. These stars may have extended partially ionized chromospheres. C1 USN OBSERV,NRL OPT INTERFEROMETER PROJECT,WASHINGTON,DC 20392. CALTECH,CALTECH SUBMILLIMETER OBSERV,PASADENA,CA 91125. RP KNAPP, GR (reprint author), PRINCETON UNIV,DEPT ASTROPHYS SCI,PRINCETON,NJ 08544, USA. NR 60 TC 44 Z9 44 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 10 PY 1995 VL 455 IS 1 BP 293 EP 299 DI 10.1086/176577 PN 1 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TG830 UT WOS:A1995TG83000029 ER PT J AU KASSIM, NE PERLEY, RA DWARAKANATH, KS ERICKSON, WC AF KASSIM, NE PERLEY, RA DWARAKANATH, KS ERICKSON, WC TI EVIDENCE FOR THERMAL ABSORPTION INSIDE CASSIOPEIA-A SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, INDIVIDUAL (CASSIOPEIA A); RADIO CONTINUUM, ISM; SUPERNOVAE, GENERAL; SUPERNOVA REMNANTS ID GALACTIC SUPERNOVA-REMNANTS; FLUX-DENSITY SCALE; REVERSE SHOCKS; LARGE ARRAY; SPECTRUM; EJECTA; MHZ AB Subarcminute resolution images of Cas A at 74 and 333 MHz are presented, Comparison with each other and with higher frequency observations indicates that the spectral index of its nonthermal emission flattens below 333 MHz and that the effect is confined toward the central 1' of the source and is maximum at its center. The source of the flattening is unknown, although we show that the data are consistent with absorption by ionized gas inside the radio shell. Such a component may be related to unshocked ejecta still freely expanding within the boundaries of the reverse shock as delineated by X-ray observations. C1 NATL RADIO ASTRON OBSERV,SOCORRO,NM 87801. RAMAN RES INST,BANGALORE 560080,KARNATAKA,INDIA. UNIV TASMANIA,DEPT PHYS,HOBART,TAS 7001,AUSTRALIA. RP KASSIM, NE (reprint author), USN,RES LAB,CODE 7213,WASHINGTON,DC 20375, USA. RI Dwarakanath, K /D-4876-2012; Astronomy & Astrophysics Group, Raman Res Institute/D-4046-2012; M, Manjunath/N-4000-2014 OI M, Manjunath/0000-0001-8710-0730 NR 31 TC 31 Z9 31 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 10 PY 1995 VL 455 IS 1 BP L59 EP & PN 2 PG 0 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TG831 UT WOS:A1995TG83100015 ER PT J AU SKIBO, JG DERMER, CD AF SKIBO, JG DERMER, CD TI HIGH-ENERGY SPECTRAL COMPLEXITY FROM THERMAL-GRADIENTS IN BLACK-HOLE ATMOSPHERES SO ASTROPHYSICAL JOURNAL LA English DT Article DE BLACK HOLE PHYSICS; GALAXIES, SEYFERT; RADIATION MECHANISMS, THERMAL ID ACTIVE GALACTIC NUCLEI; X-RAY-SPECTRA; COLD MATTER; ACCRETION DISK; CYGNUS X-1; GALAXIES; VARIABILITY; REFLECTION; NGC-4151; ABSORPTION AB We show that Compton scattering of soft photons with energies similar to 100 eV in thermally stratified black hole accretion plasmas with temperatures in the range similar to 100 keV-1 MeV can give rise to an X-ray spectral hardening above similar to 10 keV. This could produce the hardening observed in the X-ray spectra of black holes, which is generally attributed to reflection or partial covering of the incident continuum source by cold optically thick matter. in addition, we show that the presence of very hot (kT similar or equal to 1 MeV) cores in plasmas leads to spectra exhibiting high-energy tails similar to those observed from Galactic black hole candidates. RP SKIBO, JG (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,CODE 7653,WASHINGTON,DC 20375, USA. NR 43 TC 17 Z9 17 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 10 PY 1995 VL 455 IS 1 BP L25 EP L29 PN 2 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TG831 UT WOS:A1995TG83100007 ER PT J AU MANHEIMER, WM AF MANHEIMER, WM TI PHD EMPLOYMENT SO SCIENCE LA English DT Letter RP MANHEIMER, WM (reprint author), USN,RES LAB,CODE 6707,WASHINGTON,DC 20375, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD DEC 8 PY 1995 VL 270 IS 5242 BP 1553 EP 1553 PG 1 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA TJ293 UT WOS:A1995TJ29300002 ER PT J AU SNOW, ES CAMPBELL, PM AF SNOW, ES CAMPBELL, PM TI AFM FABRICATION OF SUB-10-NANOMETER METAL-OXIDE DEVICES WITH IN-SITU CONTROL OF ELECTRICAL-PROPERTIES SO SCIENCE LA English DT Article ID SCANNING-TUNNELING-MICROSCOPY; TIP-INDUCED ANODIZATION AB Metal wires and metal-oxide-metal junctions were fabricated by anodic oxidation with the conducting tip of an atomic force microscope (AFM). The width of the wires and resistance of the junctions were controlled by real-time, in situ measurement of the device resistance during fabrication. Because the properties of nanometer-scale devices are very sensitive to size variations, such measurements provide a more accurate method of controlling device properties than by controlling geometry alone. In this way, structures with critical dimensions of less than IO nanometers were fabricated with precisely tailored electrical properties. RP SNOW, ES (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 12 TC 231 Z9 237 U1 3 U2 29 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD DEC 8 PY 1995 VL 270 IS 5242 BP 1639 EP 1641 DI 10.1126/science.270.5242.1639 PG 3 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA TJ293 UT WOS:A1995TJ29300039 ER PT J AU DICK, SJ AF DICK, SJ TI THE IMMORTAL FIRE WITHIN - THE LIFE AND WORK OF BARNARD,EDWARD,EMERSON - SHEEHAN,W SO SCIENCE LA English DT Book Review RP DICK, SJ (reprint author), USN OBSERV,WASHINGTON,DC 20392, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER ASSOC ADVAN SCIENCE PI WASHINGTON PA 1333 H ST NW, WASHINGTON, DC 20005 SN 0036-8075 J9 SCIENCE JI Science PD DEC 8 PY 1995 VL 270 IS 5242 BP 1691 EP 1692 PG 2 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA TJ293 UT WOS:A1995TJ29300056 ER PT J AU Ripin, DJ Goldberg, L AF Ripin, DJ Goldberg, L TI High efficiency side-coupling of light into optical fibres using imbedded v-grooves SO ELECTRONICS LETTERS LA English DT Article DE optical fibres; optical couplers ID FIBER AB Transverse v-grooves, directly formed into the side of an optical fibre, totally reflect light incident on the fibre side-wall, directing it along the fibre axis. For a 96 mu m core fibre, light incident from a laser diode is coupled into the fibre by the v-groove with 96% coupling efficiency. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Ripin, DJ (reprint author), JAYCOR,VIENNA,VA 22180, USA. NR 3 TC 79 Z9 89 U1 0 U2 5 PU IEE-INST ELEC ENG PI HERTFORD PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTFORD, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD DEC 7 PY 1995 VL 31 IS 25 BP 2204 EP 2205 DI 10.1049/el:19951429 PG 2 WC Engineering, Electrical & Electronic SC Engineering GA TM087 UT WOS:A1995TM08700049 ER PT J AU ABE, K AKAGI, T ANTHONY, PL ANTONOV, R ARNOLD, RG AVERETT, T BAND, HR BAUER, JM BOREL, H BOSTED, PE BRETON, V BUTTONSHAFER, J CHEN, JP CHUPP, TE CLENDENIN, J COMPTOUR, C COULTER, KP COURT, G CRABB, D DAOUDI, M DAY, D DIETRICH, FS DUNNE, J DUTZ, H ERBACHER, R FELLBAUM, J FELTHAM, A FONVIEILLE, H FRLEZ, E GARVEY, D GEARHART, R GOMEZ, J GRENIER, P GRIFFIOEN, KA HOIBRATEN, S HUGHES, EW HYDEWRIGHT, C JOHNSON, JR KAWALL, D KLEIN, A KUHN, SE KURIKI, M LINDGREN, R LIU, TJ LOMBARDNELSEN, RM MARRONCLE, J MARUYAMA, T MARUYAMA, XK MCCARTHY, J MEYER, W MEZIANI, ZE MINEHART, R MITHCHELL, J MORGENSTERN, J PETRATOS, GG PITTHAN, R POCANIC, D PRESCOTT, C PREPOST, R RAINES, P RAUE, B REYNA, D RIJLLART, A ROBLIN, Y ROCHESTER, LS ROCK, SE RONDON, OA SICK, I SMITH, LC SMITH, TB SPENGOS, M STALEY, F STEINER, P LORANT, SS STUART, LM SUEKANE, F SZALATA, ZM TANG, H TERRIEN, Y USHER, T WALZ, D WHITE, JL WITTE, K YOUNG, CC YOUNGMAN, B YUTA, H ZAPALAC, G ZIHLMANN, B ZIMMERMANN, D AF ABE, K AKAGI, T ANTHONY, PL ANTONOV, R ARNOLD, RG AVERETT, T BAND, HR BAUER, JM BOREL, H BOSTED, PE BRETON, V BUTTONSHAFER, J CHEN, JP CHUPP, TE CLENDENIN, J COMPTOUR, C COULTER, KP COURT, G CRABB, D DAOUDI, M DAY, D DIETRICH, FS DUNNE, J DUTZ, H ERBACHER, R FELLBAUM, J FELTHAM, A FONVIEILLE, H FRLEZ, E GARVEY, D GEARHART, R GOMEZ, J GRENIER, P GRIFFIOEN, KA HOIBRATEN, S HUGHES, EW HYDEWRIGHT, C JOHNSON, JR KAWALL, D KLEIN, A KUHN, SE KURIKI, M LINDGREN, R LIU, TJ LOMBARDNELSEN, RM MARRONCLE, J MARUYAMA, T MARUYAMA, XK MCCARTHY, J MEYER, W MEZIANI, ZE MINEHART, R MITHCHELL, J MORGENSTERN, J PETRATOS, GG PITTHAN, R POCANIC, D PRESCOTT, C PREPOST, R RAINES, P RAUE, B REYNA, D RIJLLART, A ROBLIN, Y ROCHESTER, LS ROCK, SE RONDON, OA SICK, I SMITH, LC SMITH, TB SPENGOS, M STALEY, F STEINER, P LORANT, SS STUART, LM SUEKANE, F SZALATA, ZM TANG, H TERRIEN, Y USHER, T WALZ, D WHITE, JL WITTE, K YOUNG, CC YOUNGMAN, B YUTA, H ZAPALAC, G ZIHLMANN, B ZIMMERMANN, D TI MEASUREMENTS OF THE Q(2)-DEPENDENCE OF THE PROTON AND DEUTERON SPIN STRUCTURE FUNCTIONS G(1)(P) AND G(1)(D) SO PHYSICS LETTERS B LA English DT Article ID DEEP INELASTIC-SCATTERING; BJORKEN SUM-RULE; POLARIZED NUCLEONS; E-P; LEPTONS; ELECTROPRODUCTION; ASYMMETRY AB The ratio g(1)/F-1 has been measured over the range 0.03 < x < 0.6 and 0.3 < Q(2) < 10 (GeV/c)(2) using deep-inelastic scattering of polarized electrons from polarized protons and deuterons. We find g(1)/F-1 to be consistent with no Q(2)-dependence at fixed x in the deep-inelastic region Q(2) > 1 (GeV/c)(2). A trend is observed for g(1)/F-1 to decrease at lower Q(2). Fits to world data with and without a possible Q(2)-dependence in g(1)/F-1 are in agreement with the Bjorken sum rule, but Delta q is substantially less than the quark-parton model expectation. C1 UNIV BASEL,INST PHYS,CH-4056 BASEL,SWITZERLAND. UNIV CLERMONT FERRAND,IN2P3,LPC,CNRS,F-63170 CLERMONT FERRAND,FRANCE. CEBAF,NEWPORT NEWS,VA 23606. CENS,SERV PHYS NUCL,DAPNIA,F-91191 GIF SUR YVETTE,FRANCE. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. UNIV MASSACHUSETTS,AMHERST,MA 01003. UNIV MICHIGAN,ANN ARBOR,MI 48109. USN,POSTGRAD SCH,MONTEREY,CA 93943. OLD DOMINION UNIV,NORFOLK,VA 23529. UNIV PENN,PHILADELPHIA,PA 19104. STANFORD LINEAR ACCELERATOR CTR,STANFORD,CA 94309. STANFORD UNIV,STANFORD,CA 94305. TEMPLE UNIV,PHILADELPHIA,PA 19122. TOHOKU UNIV,SENDAI,MIYAGI 980,JAPAN. UNIV VIRGINIA,CHARLOTTESVILLE,VA 22901. UNIV WISCONSIN,MADISON,WI 53706. UNIV LIVERPOOL,OLIVER LODGE LAB,LIVERPOOL L69 3BX,MERSEYSIDE,ENGLAND. UNIV BONN,D-53113 BONN,GERMANY. FFIYM,N-2007 KJELLER,NORWAY. CERN,CH-1211 GENEVA 23,SWITZERLAND. RP ABE, K (reprint author), AMERICAN UNIV,WASHINGTON,DC 20016, USA. RI Averett, Todd/A-2969-2011; Rondon Aramayo, Oscar/B-5880-2013; Frlez, Emil/B-6487-2013; Day, Donal/C-5020-2015 OI Day, Donal/0000-0001-7126-8934 NR 43 TC 122 Z9 122 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0370-2693 J9 PHYS LETT B JI Phys. Lett. B PD DEC 7 PY 1995 VL 364 IS 1 BP 61 EP 68 DI 10.1016/0370-2693(95)01340-2 PG 8 WC Astronomy & Astrophysics; Physics, Nuclear; Physics, Particles & Fields SC Astronomy & Astrophysics; Physics GA TJ712 UT WOS:A1995TJ71200010 ER PT J AU PEHRSSON, PE LONG, JP MARCHYWKA, MJ BUTLER, JE AF PEHRSSON, PE LONG, JP MARCHYWKA, MJ BUTLER, JE TI ELECTROCHEMICALLY INDUCED SURFACE-CHEMISTRY AND NEGATIVE ELECTRON-AFFINITY ON DIAMOND(100) SO APPLIED PHYSICS LETTERS LA English DT Article AB Hydrogenated single crystal (100) diamond surfaces subjected to an electrochemical (EC) treatment are selectively oxidized at room temperature. Part of the surface remains hydrogenated, except for a narrow transition region between the oxidized and hydrogenated regions. Ultraviolet photoelectron spectroscopy indicates that the transition region has negative electron affinity (NEA), as do the surfaces of hydrogenated crystals. The oxidized and hydrogenated parts of the EC-treated surfaces do not have NEA. A possible explanation is that contaminants eliminate NEA in the hydrogenated parts of the EC treated surfaces, but the transition region remains uncontaminated. None of the oxidized surfaces exhibit NEA. (C) 1995 American Institute of Physics. RP PEHRSSON, PE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Butler, James/B-7965-2008 OI Butler, James/0000-0002-4794-7176 NR 17 TC 27 Z9 27 U1 0 U2 8 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD DEC 4 PY 1995 VL 67 IS 23 BP 3414 EP 3416 DI 10.1063/1.115264 PG 3 WC Physics, Applied SC Physics GA TH287 UT WOS:A1995TH28700015 ER PT J AU BARTON, O REISS, R AF BARTON, O REISS, R TI BUCKLING OF RECTANGULAR SYMMETRICAL ANGLE-PLY LAMINATED PLATES DETERMINED BY EIGENSENSITIVITY ANALYSIS SO AIAA JOURNAL LA English DT Article ID VIBRATION AB Closed-form approximate solutions for uniaxial and biaxial compressive buckling of rectangular symmetric angle-ply laminates are developed from eigensensitivity analysis. Boundary conditions, which consist of the various combinations of clamped and simply supported edges, are incorporated through appropriate edge condition parameters. Calculated results, presented for elastic moduli ratios up to 40, compare quite favorably with the corresponding buckling loads obtained from the Ritz method. C1 HOWARD UNIV,DEPT MECH ENGN,WASHINGTON,DC 20056. RP BARTON, O (reprint author), USN ACAD,DEPT MECH ENGN,ANNAPOLIS,MD 21402, USA. NR 16 TC 8 Z9 8 U1 0 U2 0 PU AMER INST AERONAUT ASTRONAUT PI RESTON PA 1801 ALEXANDER BELL DRIVE, STE 500, RESTON, VA 22091 SN 0001-1452 J9 AIAA J JI AIAA J. PD DEC PY 1995 VL 33 IS 12 BP 2406 EP 2413 DI 10.2514/3.12876 PG 8 WC Engineering, Aerospace SC Engineering GA TJ059 UT WOS:A1995TJ05900025 ER PT J AU Hattendorf, JB AF Hattendorf, JB TI A management odyssey: The Royal Dockyards, 1714-1914 - Haas,JM SO AMERICAN HISTORICAL REVIEW LA English DT Book Review RP Hattendorf, JB (reprint author), USN,COLL WAR,WASHINGTON,DC 20350, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER HISTORICAL REVIEW PI WASHINGTON PA 400 A ST SE, WASHINGTON, DC 20003 SN 0002-8762 J9 AM HIST REV JI Am. Hist. Rev. PD DEC PY 1995 VL 100 IS 5 BP 1568 EP 1569 DI 10.2307/2169936 PG 2 WC History SC History GA TM223 UT WOS:A1995TM22300075 ER PT J AU Ross, ST AF Ross, ST TI Nepoleon's last victory and the emergence of modern war - Epstein,RM SO AMERICAN HISTORICAL REVIEW LA English DT Book Review RP Ross, ST (reprint author), USN,COLL WAR,WASHINGTON,DC 20375, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU AMER HISTORICAL REVIEW PI WASHINGTON PA 400 A ST SE, WASHINGTON, DC 20003 SN 0002-8762 J9 AM HIST REV JI Am. Hist. Rev. PD DEC PY 1995 VL 100 IS 5 BP 1586 EP 1587 DI 10.2307/2169962 PG 2 WC History SC History GA TM223 UT WOS:A1995TM22300102 ER PT J AU CHEEVERS, J AF CHEEVERS, J TI ANNAPOLIS + THE UNITED-STATES-NAVAL-ACADEMY SO AMERICAN HISTORY LA English DT Article RP CHEEVERS, J (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COWLES HISTORY GROUP PI HARRISBURG PA 6405 FLANK DR, HARRISBURG, PA 17112-2753 SN 1076-8866 J9 AM HIST JI Am. Hist. PD DEC PY 1995 VL 30 IS 5 BP 48 EP & PG 0 WC History SC History GA TB280 UT WOS:A1995TB28000006 ER PT J AU McKenna, TM Li, SH Tao, SY AF McKenna, TM Li, SH Tao, SY TI PKC mediates LPS- and phorbol-induced cardiac cell nitric oxide synthase activity and hypocontractility SO AMERICAN JOURNAL OF PHYSIOLOGY-HEART AND CIRCULATORY PHYSIOLOGY LA English DT Article DE endotoxin; septic shock; sepsis; cardiovascular ID PROTEIN-KINASE-C; NF-KAPPA-B; PHOSPHORYLATION; ACTIVATION; MYOCYTES; ESTERS; INHIBITOR; TRANSCRIPTION; EXPRESSION; INVITRO AB lipopolysaccharide (LPS) treatment impairs cardiac myocyte contractility in a nitric oxide synthase (NOS)-dependent manner. The objective of this study was to assess whether protein kinase C (PKC) transduces the LPS signal into an enhanced NOS activity in rat cardiac myocytes. LPS (100 ng/ml) stimulated myocyte PKC activity, inducible NOS (iNOS) expression, and NOS activity in a time- and protein synthesis-dependent fashion. Directly activating PKC with beta-phorbol 12,13-dibutyrate (beta-PDB) also induced myocyte iNOS synthesis and NOS activity and reduced electrically stimulated contractility, while the inactive alpha-PDB was ineffectual. Contractility could be restored to beta-PDB-incubated cells by superfusion with the NOS inhibitor N-omega-nitro-L-arginine methyl ester. PKC blockade with sphingosine, chelerythrine, or calphostin-C precluded LPS- and beta-PDB-induced increases in NOS activity and protected contractility. Depletion of PKC by 18 h of incubation with beta-PDB in the presence of chelerythrine also blocked acquisition of enhanced NOS activity and contractile dysfunction when the myocytes were subsequently exposed to LPS. These findings suggest that PKC is a significant intracellular mediator for the effects of LPS on cardiac cell NOS activity and contractile function. RP McKenna, TM (reprint author), USN, MED RES INST, SEPT SHOCK RES PROGRAM, CODE 623, 8901 WISCONSIN AVE, BETHESDA, MD 20889 USA. NR 36 TC 52 Z9 53 U1 0 U2 0 PU AMER PHYSIOLOGICAL SOC PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814 SN 0363-6135 J9 AM J PHYSIOL-HEART C JI Am. J. Physiol.-Heart Circul. Physiol. PD DEC PY 1995 VL 269 IS 6 BP H1891 EP H1898 PG 8 WC Cardiac & Cardiovascular Systems; Physiology; Peripheral Vascular Disease SC Cardiovascular System & Cardiology; Physiology GA TM581 UT WOS:A1995TM58100007 ER PT J AU ACOSTA, JA GREENLEE, JA GUBLER, KD GOEPFERT, CJ RAGLAND, JJ AF ACOSTA, JA GREENLEE, JA GUBLER, KD GOEPFERT, CJ RAGLAND, JJ TI SURGICAL MARGINS AFTER NEEDLE-LOCALIZATION BREAST BIOPSY SO AMERICAN JOURNAL OF SURGERY LA English DT Article; Proceedings Paper CT 47th Annual Meeting of the Southwestern Surgical Congress CY APR 23-26, 1995 CL SAN ANTONIO, TX ID RADIATION-THERAPY; CLINICAL-TRIAL; RE-EXCISION; CARCINOMA; CANCER; LESIONS; LUMPECTOMY; MASTECTOMY AB BACKGROUND: The use of needle-localization breast biopsy (NLBB) for the early diagnosis of breast cancer is common. The therapeutic adequacy of tumor-free margins following NLBB is unknown. We hypothesized that the presence of residual tumor after reexcision (mastectomy, tylectomy, or quadrantectomy) does not depend on the margin status following NLBB. PATIENTS AND METHODS: Retrospective cohort analysis was performed on 890 consecutive NLBBs executed between January 1990 and June 1994. Patients with invasive breast neoplasia were divided into two groups based on the tumor margins after NLBB. Group 1 were the women with positive margins, and group 2 had negative margins. Breast specimens after reexcision were reviewed for evidence of residual invasive carcinoma. RESULTS: Invasive neoplasia was present in 107 patients (12%). Surgical margins and definitive records of care were available for 96 of them (90%). All 45 patients in group 1 and 38 (75%) of 51 patients in group 2 underwent reexcision of the initial biopsy site (P = 0.36). Residual invasive carcinoma was present in 10 patients (22%) in group 1 and 3 (8%) in group 2 (P = 0.13). CONCLUSION: Invasive breast neoplasia diagnosed by NLBB requires reexcision regardless of tumor margins to achieve complete local surgical eradication of tumor. C1 USN,MED CTR,DEPT SURG,SAN DIEGO,CA 92134. USN,MED CTR,DEPT RADIOL,SAN DIEGO,CA 92134. RP ACOSTA, JA (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 24 TC 31 Z9 31 U1 0 U2 0 PU CAHNERS PUBL CO PI NEW YORK PA 249 WEST 17 STREET, NEW YORK, NY 10011 SN 0002-9610 J9 AM J SURG JI Am. J. Surg. PD DEC PY 1995 VL 170 IS 6 BP 643 EP 646 DI 10.1016/S0002-9610(99)80033-6 PG 4 WC Surgery SC Surgery GA TH942 UT WOS:A1995TH94200025 PM 7492018 ER PT J AU Kelly, DJ Salata, KF Strickman, D Hershey, JN AF Kelly, DJ Salata, KF Strickman, D Hershey, JN TI Rickettsia tsutsugamushi infection in cell culture: Antibiotic susceptibility determined by flow cytometry SO AMERICAN JOURNAL OF TROPICAL MEDICINE AND HYGIENE LA English DT Article ID SCRUB TYPHUS AB Recent unpublished reports from northern Thailand of severe and sometimes fatal cases of scrub typhus, despite appropriate antibiotic therapy, suggest that resistance may occur. Current antibiotic susceptibility methods that use direct microscopic counts of Giemsa-stained cells or mouse protection assays are slow, labor-intensive, and expensive. We explored the use of flow cytometry to measure rickettsial infection in vitro in L-929 cells treated with and without doxycycline, ciprofloxacin, erythromycin, and chloramphenicol. It was possible to detect the rickettsiae down to a level of 83% of the cells infected, mean of 37 rickettsiae per cell, and 40% of cells with too many rickettsiae to count. This level of sensitivity was sufficient to determine the inhibitory effect of all four drugs at standard screening concentrations. At lower concentrations of doxycycline, flow cytometry detected inhibition of rickettsial growth at a concentration of 6.25 X 10(-2) mu g/ml but not at 6.25 X 10(-3) mu g/ml, suggesting that the minimum inhibitory concentration is somewhere between these two values. The data from this study show that Row cytometry permits the rapid screening of numerous rickettsial isolates for their susceptibility to a variety of antibiotics, but that visual counts of infected cells provide a more precise indication of rickettsial growth. C1 WALTER REED ARMY MED CTR,DEPT MED,ALLERGY IMMUNOL SERV,WASHINGTON,DC 20307. WALTER REED ARMY INST RES,DEPT RICKETTSIAL DIS,WASHINGTON,DC 20307. USN,MED RES INST,VIRAL & RICKETTSIAL DIS PROGRAM,BETHESDA,MD 20889. RP Kelly, DJ (reprint author), WALTER REED ARMY MED CTR,DEPT CLIN INVEST,6825 16TH ST NW,WASHINGTON,DC 20307, USA. NR 22 TC 9 Z9 10 U1 1 U2 1 PU AMER SOC TROP MED & HYGIENE PI MCLEAN PA 8000 WESTPARK DRIVE SUITE 130, MCLEAN, VA 22101 SN 0002-9637 J9 AM J TROP MED HYG JI Am. J. Trop. Med. Hyg. PD DEC PY 1995 VL 53 IS 6 BP 602 EP 606 PG 5 WC Public, Environmental & Occupational Health; Tropical Medicine SC Public, Environmental & Occupational Health; Tropical Medicine GA TR971 UT WOS:A1995TR97100009 PM 8561261 ER PT J AU DELEON, PH SAMMONS, MT SEXTON, JL AF DELEON, PH SAMMONS, MT SEXTON, JL TI FOCUSING ON SOCIETY REAL NEEDS - RESPONSIBILITY AND PRESCRIPTION PRIVILEGES SO AMERICAN PSYCHOLOGIST LA English DT Article ID PSYCHOLOGY; PSYCHOPHARMACOLOGY AB Professional psychology has the obligation and opportunity for contributing significantly to society. The prescription privilege agenda is a case example. During the past decade, considerable support has developed within the field, particularly among practitioners, for obtaining this clinical responsibility. The federal sector has demonstrated that our profession can prescribe competently and safely and that viable training modules can be developed at the postdoctoral level. There is a clear and pressing need for ensuring that psychotropic medications are used in a safe and effective manner. Nevertheless, at both the state and national levels, those psychologists involved in seeking this privilege have experienced intense opposition from organized psychiatry. It is crucial that the profession control its own destiny. C1 US SENATE,WASHINGTON,DC 20510. USN,WASHINGTON,DC 20375. NR 51 TC 23 Z9 23 U1 0 U2 2 PU AMER PSYCHOLOGICAL ASSOC PI WASHINGTON PA 750 FIRST ST NE, WASHINGTON, DC 20002-4242 SN 0003-066X J9 AM PSYCHOL JI Am. Psychol. PD DEC PY 1995 VL 50 IS 12 BP 1022 EP 1032 DI 10.1037/0003-066X.50.12.1022 PG 11 WC Psychology, Multidisciplinary SC Psychology GA TK269 UT WOS:A1995TK26900007 ER PT J AU YAVORSKI, CC ACOSTA, JA RAGLAND, JJ AF YAVORSKI, CC ACOSTA, JA RAGLAND, JJ TI PRECHOLECYSTECTOMY ESOPHAGOGASTRODUODENOSCOPY - IS IT OF VALUE SO AMERICAN SURGEON LA English DT Article AB Patients with cholelithiasis and history of atypical abdominal pain present the surgeon with a challenging clinical problem. We hypothesized that preoperative esophagogastroduodenoscopy before cholecystectomy would identify patients with concomitant upper gastrointestinal pathology. Retrospective review of 143 patients who presented with atypical abdominal pain, gallstones, and underwent EGD before their cholecystectomy between July 1989 and March 1994. A total of 1162 cholecystectomies were performed during the study period; 143 patients (12 per cent) underwent a preoperative EGD because of atypical abdominal pain. One hundred ten patients (77 per cent) had normal endoscopies. Thirty-three patients (23 per cent) had abnormal findings. Gastric polyps were found in three patients and esophageal varices in one patient. There were 36 findings in 29 patients, which included peptic ulcer disease, esophagitis, gastritis, and duodenitis. Seven patients had two abnormal findings. Moderate to severe disease was found in a total of 13 (9 per cent) patients. We recommend that patients who present with cholelithiasis and atypical abdominal pain undergo preoperative esophagogastroduodenoscopy, as we have found that at least 9 per cent of the patient population will have significant findings that may alter their management. C1 USN,MED CTR,DEPT GEN SURG,SAN DIEGO,CA 92134. RP YAVORSKI, CC (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 4 TC 4 Z9 4 U1 0 U2 1 PU SOUTHEASTERN SURGICAL CONGRESS PI ATLANTA PA 1776 PEACHTREE RD, NW., SUITE 410N, ATLANTA, GA 30309-2352 SN 0003-1348 J9 AM SURGEON JI Am. Surg. PD DEC PY 1995 VL 61 IS 12 BP 1032 EP 1034 PG 3 WC Surgery SC Surgery GA TG267 UT WOS:A1995TG26700004 PM 7486438 ER PT J AU Brook, I Frazier, EH Cox, ME Yeager, JK AF Brook, I Frazier, EH Cox, ME Yeager, JK TI The aerobic and anaerobic microbiology of pustular acne lesions SO ANAEROBE LA English DT Article DE acne vulgaris; propionilbacterium acnes; staphyloccus sp; peptostreptococcus sp; bacteroides sp ID PROPIONIBACTERIUM-ACNES; VULGARIS; INVITRO AB Specimens from 32 pustular acne lesions that were inoculated on media supportive for the growth of aerobic and anaerobic bacteria showed bacterial growth. Only aerobic or facultative bacteria were recovered in 15 (47%) specimens, only anaerobic bacteria in 11 (34%) specimens, and mixed aerobic and anaerobic bacteria in 6 (18%) specimens. A total of 57 isolates, 31 anaerobes (1.0 per specimen) and 26 aerobes (0.8 per specimen) were recovered. The predominant isolates were Staphylococcus sp. (19 isolates), Peptostreptococcus sp. (15), and Propionibacterium sp. (10). Twelve (37.5%) of the comedones yielded only one organism. This retrospective study highlighted the polymicrobial nature of over two-thirds of culture positive pustular acne lesions and suggests the potential for pathogenic role of aerobic and anaerobic organisms other than P. acnes and Staphylococcus sp. in acne vulgaris. (C) 1995 Academic Press C1 USN HOSP,DEPT DERMATOL & LAB MED,BETHESDA,MD 20814. ANAEROBE SYST,SAN JOSE,CA. RP Brook, I (reprint author), USN HOSP,DEPT PEDIAT,BETHESDA,MD 20814, USA. NR 19 TC 7 Z9 8 U1 0 U2 1 PU ACADEMIC PRESS LTD PI LONDON PA 24-28 OVAL RD, LONDON, ENGLAND NW1 7DX SN 1075-9964 J9 ANAEROBE JI Anaerobe PD DEC PY 1995 VL 1 IS 6 BP 305 EP 307 DI 10.1006/anae.1995.1031 PG 3 WC Microbiology SC Microbiology GA TU936 UT WOS:A1995TU93600003 PM 16887540 ER PT J AU GURUSHANTHAIAH, K WEINGER, MB ENGLUND, CE AF GURUSHANTHAIAH, K WEINGER, MB ENGLUND, CE TI VISUAL-DISPLAY FORMAT AFFECTS THE ABILITY OF ANESTHESIOLOGISTS TO DETECT ACUTE PHYSIOLOGICAL - A LABORATORY STUDY EMPLOYING A CLINICAL DISPLAY SIMULATOR SO ANESTHESIOLOGY LA English DT Article AB Background: Anesthesiologists use data presented on visual displays to monitor patients' physiologic status. Although studies in nonmedical fields have suggested differential effects on performance among display formats, few studies have examined the effect of display format on anesthesiologist monitoring performance. Methods: A computer-based clinical display simulator was developed to evaluate the efficacy of three currently used display formats (numeric, histogram, or polygon displays) in a partial-task laboratory simulation. The subjects' task consisted solely of detecting any changes in the values of the physiologic variables depicted on a simulated clinical display. Response latency and accuracy were used as measures of performance. Results: Thirteen anesthesia residents and five nonmedical volunteers, were enrolled as subjects. Use of either the histogram or polygon displays significantly improved response latencies and allowed greater accuracy compared with the numeric display in the anesthesia residents. Neither response latency nor accuracy improved with additional exposure to these displays. In contrast, display format did not significantly affect response latency or accuracy in the nonmedical volunteers. Conclusions: The results of this study suggest that graphic displays may enhance the detection of acute changes in patient physiologic status during anesthesia administration. This research also demonstrates the importance of assessing performance on clinical devices by studying actual users rather than random subjects. Further research is required to elucidate the display elements and characteristics that best support different aspects of the anesthesiologist's monitoring tasks. C1 VET AFFAIRS MED CTR,ANESTHESIA SERV,SAN DIEGO,CA 92161. USN,CTR COMMAND CONTROL & OCEAN SURVEILLANCE,DIV RES DEV TEST & EVALUAT NRAD,SAN DIEGO,CA 92152. UNIV CALIF SAN DIEGO,SAN DIEGO,CA 92103. NR 19 TC 31 Z9 32 U1 0 U2 0 PU LIPPINCOTT-RAVEN PUBL PI PHILADELPHIA PA 227 EAST WASHINGTON SQUARE, PHILADELPHIA, PA 19106 SN 0003-3022 J9 ANESTHESIOLOGY JI Anesthesiology PD DEC PY 1995 VL 83 IS 6 BP 1184 EP 1193 DI 10.1097/00000542-199512000-00009 PG 10 WC Anesthesiology SC Anesthesiology GA TJ329 UT WOS:A1995TJ32900009 PM 8533911 ER PT J AU HARRELLBRUDER, B HUTCHINS, KL AF HARRELLBRUDER, B HUTCHINS, KL TI SEIZURES CAUSED BY INGESTION OF COMPOSITION C-4 SO ANNALS OF EMERGENCY MEDICINE LA English DT Note AB Composition C-4 (C-4) is a plastic explosive widely used in both military and civilian settings. Ingestion of the active ingredient, RDX (cyclonite), can cause generalized seizures. Accidental and intentional C-4 (RDX) intoxications have occurred during manufacture or in wartime. In the literature the intentional ingestion of C-4 has been reported but not verified. We present a case of intentional C-4 abuse. C1 USN HOSP,DEPT EMERGENCY MED,CAMP PENDLETON,CA. NR 0 TC 11 Z9 11 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0196-0644 J9 ANN EMERG MED JI Ann. Emerg. Med. PD DEC PY 1995 VL 26 IS 6 BP 746 EP 748 DI 10.1016/S0196-0644(95)70049-8 PG 3 WC Emergency Medicine SC Emergency Medicine GA TJ278 UT WOS:A1995TJ27800013 PM 7492047 ER PT J AU Khalil, SB Mansour, NS Soliman, GN AF Khalil, SB Mansour, NS Soliman, GN TI Biological and biochemical comparative studies on Schistosoma mansoni from two localities in Egypt where S-haematobium is endemic SO ANNALS OF TROPICAL MEDICINE AND PARASITOLOGY LA English DT Article ID LARVAL STAGES; ENZYMES; IDENTIFICATION; HYBRIDS; STRAINS AB The changing pattern of Schistosoma mansoni and S. haematobium distribution in Egypt is generally attributed to ecological changes caused by the construction of the Aswan High Dam. Although S. mansoni was previously restricted to Lower Egypt, it is now found at certain foci in tipper Egypt. In areas of Lower Egypt where S. mansoni and S. haematobium are sympatric, S. mansoni eggs are shed almost exclusively in the stools of patients, whereas in Upper Egypt they are more frequently shed in the urine. In spite of this difference, the eggs and adult worms obtained from hamsters infected with S. mansoni strains from each of these areas proved to be morphologically identical. Protein patterns and isoenzyme profiles of male or female adult worms of each of the two isolates, obtained from infected hamsters, also proved virtually identical. In hamsters with mixed infections of S. mansoni and S. haematobium, some S. mansoni females cross-mated with S. haematobium males and they then developed ovaries and laid eggs which were typical of S. mansoni and which were excreted from the urinary bladder. In Upper Egypt, which is predominantly a S. haematobium area, patients with established infections may have a preponderance of S. haematobium males associated with S. mansoni females. These females may then migrate to the vesicular plexus and deposit S. mansoni eggs in the urinary bladder, to be shed subsequently in the urine. The observations appear to be better explained by the phenomenon of parthenogenesis than by the production of true genetic hybrids. C1 USN, MED RES UNIT 3, DIV BASIC SCI, CAIRO, EGYPT. CAIRO UNIV, FAC SCI, DEPT ZOOL, CAIRO, EGYPT. NR 23 TC 1 Z9 1 U1 0 U2 0 PU MANEY PUBLISHING PI LEEDS PA STE 1C, JOSEPHS WELL, HANOVER WALK, LEEDS LS3 1AB, W YORKS, ENGLAND SN 0003-4983 EI 1364-8594 J9 ANN TROP MED PARASIT JI Ann. Trop. Med. Parasitol. PD DEC PY 1995 VL 89 IS 6 BP 645 EP 652 PG 8 WC Public, Environmental & Occupational Health; Parasitology; Tropical Medicine SC Public, Environmental & Occupational Health; Parasitology; Tropical Medicine GA TP703 UT WOS:A1995TP70300007 PM 8745939 ER PT J AU CHRISEY, LA PAZIRANDEH, M LISS, HS AF CHRISEY, LA PAZIRANDEH, M LISS, HS TI NONSEQUENCE-SPECIFIC INHIBITION OF BACTERIAL LUMINESCENCE BY PHOSPHOROTHIOATE OLIGODEOXYRIBONUCLEOTIDES SO ANTISENSE RESEARCH AND DEVELOPMENT LA English DT Article ID ANTISENSE OLIGONUCLEOTIDES; BIOLUMINESCENCE; RNA AB To evaluate the effect of synthetic DNA oligomers on regulation of bacterial genes in vivo, we tested 63 oligomers of variable length and chemistry for their ability to selectively suppress light production in the bio-luminescent marine organism, Vibrio fischeri, Phosphodiester, phosphorothioate, and mixed backbone oligomers were designed to be lux gene targeted or nontargeted (negative) controls. Although significant suppression of luminescence was observed, most notably with the phosphorothioate oligomers, there was no correlation between inhibitory activity and oligomer sequence, The phosphorothioate oligomer that was most potent for inhibition of luminescence in bacterial culture had no effect on the; activity of purified luciferase, Mechanisms other than sequence-specific inhibition of gene expression or direct interaction with luciferase are discussed. C1 GEOCENTERS INC,FT WASHINGTON,MD 20744. RP CHRISEY, LA (reprint author), USN,RES LAB,CODE 6950,4555 OVERLOOK AVE,WASHINGTON,DC 20375, USA. NR 13 TC 7 Z9 7 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 1050-5261 J9 ANTISENSE RES DEV JI Antisense Res. Dev. PD WIN PY 1995 VL 5 IS 4 BP 261 EP 269 PG 9 WC Biotechnology & Applied Microbiology; Medicine, Research & Experimental SC Biotechnology & Applied Microbiology; Research & Experimental Medicine GA TJ366 UT WOS:A1995TJ36600004 PM 8746775 ER PT J AU SEELY, JF HUNTER, WR KOWALSKI, MP AF SEELY, JF HUNTER, WR KOWALSKI, MP TI TRANSMITTANCE OF A THIN SARAN FILM IN THE 45-584-A WAVELENGTH REGION SO APPLIED OPTICS LA English DT Article DE TRANSMITTANCE FILTER; EXTREME ULTRAVIOLET; ATOMIC-SCATTERING FACTORS ID GRATING-CRYSTAL MONOCHROMATOR; TRANSMISSION; PERFORMANCE AB The transmittance of a free-standing Saran film, 4260 Angstrom thick, has been measured by means of synchrotron radiation in the 45-584-Angstrom wavelength region. The transmittance was calculated by means of the elemental composition of the film material as determined by x-ray photoelectron spectroscopy and the optical constants as derived from atomic-scattering factors. The calculated transmittance agreed with the measured transmittance in the 45-150-Angstrom wavelength region. The calculated transmittance was significantly lower than that measured for the wavelength range 150-340 Angstrom. This difference implies that molecular effects that are not accounted for by atomic-scattering factors become increasingly important at the longer wavelengths. (C) 1995 Optical Society of America C1 SFA INC,LANDOVER,MD 20375. RP SEELY, JF (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD DEC 1 PY 1995 VL 34 IS 34 BP 7945 EP 7948 PG 4 WC Optics SC Optics GA TH295 UT WOS:A1995TH29500019 PM 21068888 ER PT J AU CHENAULT, DB SNAIL, KA HANSSEN, LM AF CHENAULT, DB SNAIL, KA HANSSEN, LM TI IMPROVED INTEGRATING-SPHERE THROUGHPUT WITH A LENS AND NONIMAGING CONCENTRATOR SO APPLIED OPTICS LA English DT Article ID FIELD AB A reflectometer design utilizing an integrating sphere with a lens and nonimaging concentrator is described. Compared with previous designs where a collimator was used to restrict the detector field of view, the concentrator-lens combination significantly increases the throughput of the reflectometer. A procedure for designing lens-concentrators is given along with the results of parametric studies. The measured angular response of a lens-concentrator system is compared with ray-trace predictions and with the response of an ideal system. (C) 1995 Optical Society of America C1 NIST,DIV RADIOMETR PHYS,GAITHERSBURG,MD 20899. RP CHENAULT, DB (reprint author), USN,RES LAB,DIV OPT SCI,CODE 5622,WASHINGTON,DC 20375, USA. NR 12 TC 7 Z9 7 U1 1 U2 2 PU OPTICAL SOC AMER PI WASHINGTON PA 2010 MASSACHUSETTS AVE NW, WASHINGTON, DC 20036 SN 0003-6935 J9 APPL OPTICS JI Appl. Optics PD DEC 1 PY 1995 VL 34 IS 34 BP 7959 EP 7964 PG 6 WC Optics SC Optics GA TH295 UT WOS:A1995TH29500022 PM 21068891 ER PT J AU Pederson, ED Stanke, SR Whitener, SJ Sebastiani, PT Lamberts, BL Turner, DW AF Pederson, ED Stanke, SR Whitener, SJ Sebastiani, PT Lamberts, BL Turner, DW TI Salivary levels of alpha(2)-macroglobulin, alpha(1)-antitrypsin, C-reactive protein, cathepsin G and elastase in humans with or without destructive periodontal disease SO ARCHIVES OF ORAL BIOLOGY LA English DT Article DE saliva; ELISA; C-reactive protein; alpha(1)-antitrypsin; alpha(2)-macroglobulin; polymorphonuclear leucocytes; cathepsin G; elastase ID GINGIVAL CREVICULAR FLUID; NEUTROPHIL ELASTASE; ALPHA-2-MACROGLOBULIN; COLLAGENASE; HEALTHY AB Five host-response indicators were measured by enzyme-linked immunosorbent assays on unstimulated whole saliva samples from 45 adults (19 male, 26 female). The participants were distributed among four dentate groups representing oral health (I), gingivitis (II), moderate periodontitis (III), and severe periodontitis (IV), and one group of edentulous volunteers (V). Levels of the host-response indicators varied widely, from zero, primarily with groups I and V, to relatively high values with groups II, III and IV. The levels ranged as follows: alpha(2)-macroglobulin, 0-4941 ng/ml; alpha(1)-antitrypsin, 2-2271 ng/ml; C-reactive protein, 0-472 pg/ml; cathepsin G, 0-6035 ng/ml; elastase, 0-164 ng/ml (free), 0-732 ng/ml (bound to alpha(1)-antitrypsin), and 0-318 ng/ml (bound to alpha(2)-macroglobulin). Statistical evaluation by planned contrasts showed that levels of host-response indicators for group I were significantly lower (except for alpha(1)-antitrypsin) than for groups II, III, and IV. A trend analysis of groups I-IV showed that mean scores (again, except for alpha(1)-antitrypsin) increased significantly in a positive, monotonic manner. Group V showed significantly lower values for elastase than in the other groups. The findings demonstrate that these factors can be detected in whole saliva and suggest that, except for alpha(1)-antitrypsin, their levels are directly related to an individual's periodontal status. C1 NORTHWESTERN UNIV,SCH DENT,DIV PERIODONT,CHICAGO,IL 60611. RP Pederson, ED (reprint author), USN,INST DENT RES,MED RES & DEV COMMAND,CTR TRAINING,BLDG 1-H,GREAT LAKES,IL 60088, USA. NR 30 TC 37 Z9 39 U1 0 U2 8 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0003-9969 J9 ARCH ORAL BIOL JI Arch. Oral Biol. PD DEC PY 1995 VL 40 IS 12 BP 1151 EP 1155 DI 10.1016/0003-9969(95)00089-5 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TM247 UT WOS:A1995TM24700011 PM 8850655 ER PT J AU ABENHEIM, D AF ABENHEIM, D TI FORGING THE KINGS SWORD - MILITARY EDUCATION BETWEEN TRADITION AND MODERNIZATION - THE CASE OF THE ROYAL-PRUSSIAN-CADET-CORPS, 1871-1918 - MONCURE,J SO ARMED FORCES & SOCIETY LA English DT Book Review RP ABENHEIM, D (reprint author), USN,POSTGRAD SCH,DEPT NATL SECUR,MONTEREY,CA 93940, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU TRANSACTION PERIOD CONSORTIUM PI NEW BRUNSWICK PA DEPT 3091 RUTGERS-THE STATE UNIV OF NJ, NEW BRUNSWICK, NJ 08903 SN 0095-327X J9 ARMED FORCES SOC JI Armed Forces Soc. PD WIN PY 1995 VL 21 IS 2 BP 300 EP 302 DI 10.1177/0095327X9502100210 PG 3 WC Political Science; Sociology SC Government & Law; Sociology GA QG503 UT WOS:A1995QG50300010 ER PT J AU Zacharias, N deVegt, C Winter, L Johnston, KJ AF Zacharias, N deVegt, C Winter, L Johnston, KJ TI A radio-optical reference frame .8. CCD observations from KPNO and CTIO: Internal calibration and first results SO ASTRONOMICAL JOURNAL LA English DT Article ID ASTROMETRY AB In this pilot investigation, precise optical positions in the FK5 system are presented for a set of 16 compact extragalactic radio sources, which will be part of the future radio-optical reference frame. The 0.9 m KPNO and CTIO telescopes equipped with 2 K CCDs have been used for this project. The astrometric properties of these instruments are investigated in detail. New techniques of using wide field CCD observations for astrometry in general are developed. An internal precision of 5-31 mas in position per single exposure is found, depending on the brightness of the object. The tie to the primary optical reference system is established by photographic astrometry using dedicated astrographs on both hemispheres. An accuracy of approximate to 30 mas per source is estimated for the multistep reduction procedure when based on the future Hipparcos catalog, while the FK5-based positions suffer from system errors of 100-200 mas as compared to the radio positions. This work provides a contribution to the international effort to link the Hipparcos instrumental coordinate system to the quasi-inertial VLBI radio reference frame. Precise radio and optical astrometry of a large sample of compact extragalactic sources will also contribute to the astrophysics of these objects by comparing the respective centers of emission at the optical and radio wavelengths. (C) 1995 American Astronomical Society. C1 USN OBSERV,WASHINGTON,DC 20392. NR 23 TC 16 Z9 16 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0004-6256 J9 ASTRON J JI Astron. J. PD DEC PY 1995 VL 110 IS 6 BP 3093 EP 3106 DI 10.1086/117750 PG 14 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TL326 UT WOS:A1995TL32600042 ER PT J AU REYNOLDS, JE JAUNCEY, DL STAVELEYSMITH, L TZIOUMIS, AK DEVEGT, C ZACHARIAS, N PERRYMAN, MAC VANLEEUWEN, F KING, EA MCCULLOCH, PM RUSSELL, JL JOHNSTON, KJ HINDSLEY, R MALIN, DF ARGUE, AN MANCHESTER, RN KESTEVEN, MJ WHITE, GL JONES, PA AF REYNOLDS, JE JAUNCEY, DL STAVELEYSMITH, L TZIOUMIS, AK DEVEGT, C ZACHARIAS, N PERRYMAN, MAC VANLEEUWEN, F KING, EA MCCULLOCH, PM RUSSELL, JL JOHNSTON, KJ HINDSLEY, R MALIN, DF ARGUE, AN MANCHESTER, RN KESTEVEN, MJ WHITE, GL JONES, PA TI ACCURATE REGISTRATION OF RADIO AND OPTICAL-IMAGES OF SN 1987A SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE STARS, SUPERNOVAE, INDIVIDUAL, SN 1987A; REFERENCE SYSTEMS; RADIO CONTINUUM, STARS ID LARGE MAGELLANIC CLOUD; SOUTHERN-HEMISPHERE; REFERENCE FRAME; EMISSION; SUPERNOVA-1987A; ASTROMETRY; POSITIONS; SN-1987A; REMNANT AB We present precision astrometry of the supernova 1987A which, for the first time, accurately registers high-resolution optical and radio images to better than 100 milliarc-second (mas). We have used preliminary results from the Hipparcos satellite, along with astrometric photographic plates, to redetermine the optical position of SN 1987A, and have made VLBI observations of radio stars to link the Hipparcos and VLBI reference frames in the vicinity of SN 1987A. This has allowed us to register the optical and radio images with an accuracy of similar to 70 mas. We find that the centre of the radio emission coincides with the position of the optical star at the centre of SN 1987A much more closely than previously found and conclude that the radio emission is due to interaction between an expanding shock front and the surrounding medium. However, a marginally significant displacement of the radio emission towards the east (140 mas) may indicate that the shock wave has expanded asymmetrically. C1 UNIV HAMBURG, HAMBURG, GERMANY. EUROPEAN SPACE AGCY, ESTEC, DIV ASTROPHYS, 2200 AG NOORDWIJK, NETHERLANDS. ROYAL GREENWICH OBSERV, CAMBRIDGE CB3 0EZ, ENGLAND. UNIV TASMANIA, HOBART, TAS 7001, AUSTRALIA. APPL RES CORP, LANDOVER, MD 20785 USA. USN OBSERV, WASHINGTON, DC 20375 USA. ANGLO AUSTRALIAN OBSERV, EPPING, NSW 2121, AUSTRALIA. UNIV CAMBRIDGE, INST ASTRON, CAMBRIDGE CB3 0HA, ENGLAND. UNIV WESTERN SYDNEY, KINGSWOOD, NSW 2750, AUSTRALIA. RP REYNOLDS, JE (reprint author), CSIRO, AUSTRALIA TELESCOPE NATL FACIL, EPPING, NSW 2121, AUSTRALIA. RI Staveley-Smith, Lister/A-1683-2011; King, Edward/A-1473-2012 OI Staveley-Smith, Lister/0000-0002-8057-0294; King, Edward/0000-0002-6898-2130 NR 24 TC 23 Z9 23 U1 0 U2 0 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD DEC 1 PY 1995 VL 304 IS 1 BP 116 EP 120 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TH307 UT WOS:A1995TH30700019 ER PT J AU LESTRADE, JF JONES, DL PRESTON, RA PHILLIPS, RB TITUS, MA KOVALEVSKY, J LINDEGREN, L HERING, R FROESCHLE, M FALIN, JL MIGNARD, F JACOBS, CS SOVERS, OJ EUBANKS, M GABUZDA, D AF LESTRADE, JF JONES, DL PRESTON, RA PHILLIPS, RB TITUS, MA KOVALEVSKY, J LINDEGREN, L HERING, R FROESCHLE, M FALIN, JL MIGNARD, F JACOBS, CS SOVERS, OJ EUBANKS, M GABUZDA, D TI PRELIMINARY LINK OF THE HIPPARCOS AND VLBI REFERENCE FRAMES SO ASTRONOMY & ASTROPHYSICS LA English DT Article DE ASTROMETRY; REFERENCE SYSTEMS; TECHNIQUES, INTERFEROMETRIC ID OPTICAL POSITIONS; RADIO STARS; CATALOG AB We present a comparison of VLBI and Hipparcos astrometric parameters of several optically bright radio-emitting stars. The systematic discrepancies found in these preliminary data can be removed by performing a single global rotation between the extragalactic and Hipparcos reference frames. Two estimates of this rotation and its time derivative have been made by using seven and six link stars from the two Hipparcos reduction consortia FAST and NDAC, respectively. The three angles and annual rates of rotation between the two frames are determined at better than the milli-arcsec level. The angles of rotation found are relative to a VLBI extragalactic reference frame that is defined by the IERS VLBI coordinates of the extragalactic reference sources used for the differential VLBI measurement of the link stars. The post-fit residuals of the star coordinates and proper motion components after the adjustment of the global rotation indicate that the consistency between the Hipparcos and VLBI astrometric techniques is at the milli-arcsec level. This is the first cross-check between these two astrometric techniques of comparable precision. The level of agreement found is consistent with the expected accuracy of the technique, even though the astrometric parameters used are from preliminary reductions of the data for both techniques. The Hipparcos reference frame has been aligned with a quasi-FK5 frame in the process of its construction. The magnitudes of the rotation angles found are consistent with the degree of alignment known between the VLBI and FK5 frames. This VLBI link of the Hipparcos catalog is preliminary and we describe various improvements that will be implemented before the release of the Hipparcos catalog in 1996. Comparison of the VLBI and Hipparcos trigonometric parallaxes are also discussed. C1 CALTECH, JET PROP LAB, PASADENA, CA 91109 USA. MIT, HAYSTACK OBSERV, WESTFORD, MA 01886 USA. CTR ETUD & RECH GEODYNAM & ASTRON, F-06130 GRASSE, FRANCE. LUND OBSERV, S-22100 LUND, SWEDEN. ASTRON RECH INST, D-69120 HEIDELBERG, GERMANY. USN OBSERV, CODE TSEO, WASHINGTON, DC 20392 USA. UNIV CALGARY, DEPT PHYS & ASTRON, CALGARY, AB T2N 1N4, CANADA. RP LESTRADE, JF (reprint author), OBSERV PARIS, CNRS, ARPEGES URA 1757, F-92195 MEUDON, FRANCE. OI Eubanks, Thomas Marshall/0000-0001-9543-0414 NR 23 TC 36 Z9 36 U1 0 U2 2 PU EDP SCIENCES S A PI LES ULIS CEDEX A PA 17, AVE DU HOGGAR, PA COURTABOEUF, BP 112, F-91944 LES ULIS CEDEX A, FRANCE SN 0004-6361 J9 ASTRON ASTROPHYS JI Astron. Astrophys. PD DEC 1 PY 1995 VL 304 IS 1 BP 182 EP 188 PG 7 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TH307 UT WOS:A1995TH30700028 ER PT J AU FOSTER, RS CADWELL, BJ WOLSZCZAN, A ANDERSON, SB AF FOSTER, RS CADWELL, BJ WOLSZCZAN, A ANDERSON, SB TI A HIGH GALACTIC LATITUDE PULSAR SURVEY OF THE ARECIBO SKY SO ASTROPHYSICAL JOURNAL LA English DT Article DE ISM, INDIVIDUAL (S147); PULSARS, GENERAL; SURVEYS ID BINARY MILLISECOND PULSAR; RELATIVISTIC GRAVITY; DISCOVERY; CATALOG; PLANE AB The results of a 1355 square degree survey of high Galactic latitudes conducted from 1990 to 1995 with the Arecibo radio telescope are presented. The majority of the survey was performed at 430 MHz with a 32 channel x 250 kHz filter bank sampled at 4 kHz. A 7 sigma sensitivity of similar to 1 mJy was obtained for pulsars with periods down to similar to 3 ms. This survey yielded five millisecond or recycled pulsars and 14 slow period pulsars. In addition, one millisecond pulsar and four slow period pulsar candidates have been identified but are as yet unconfirmed. One of the new slow period pulsars appears to be associated with the supernova remnant S147 located toward the Galactic anticenter. C1 PENN STATE UNIV,DEPT ASTRON & ASTROPHYS,UNIVERSITY PK,PA 16802. RP FOSTER, RS (reprint author), USN,RES LAB,DIV REMOTE SENSING,CODE 7210,WASHINGTON,DC 20375, USA. NR 30 TC 45 Z9 46 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 1 PY 1995 VL 454 IS 2 BP 826 EP 830 DI 10.1086/176535 PN 1 PG 5 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TF088 UT WOS:A1995TF08800029 ER PT J AU FRAIL, DA KASSIM, NE CORNWELL, TJ GOSS, WM AF FRAIL, DA KASSIM, NE CORNWELL, TJ GOSS, WM TI DOES THE CRAB HAVE A SHELL SO ASTROPHYSICAL JOURNAL LA English DT Article DE ACCELERATION OF PARTICLES; SUPERNOVA REMNANTS; TECHNIQUES, IMAGE PROCESSING ID SUPERNOVA-REMNANTS; NEBULAS JET; EXPANSION; BUBBLE; BAYS AB We present deep images of a region around the Crab Nebula made with the VLA, utilizing new imaging and deconvolution algorithms in a search for a faint radio shell. The existence of a high-velocity, hydrogen-rich envelope has been predicted to account for the low total mass and kinetic energy of the observed nebula. No radio emission was detected from an extended source outside the Crab Nebula. Our limits on surface brightness are sufficiently low to rule out the existence of a shell around the Crab whose brightness is at least 2 orders of magnitude below that of SN 1006, the faintest historical shell-type supernova remnant. We consider models for the progenitor star and the presupernova environment and conclude that if a fast, outer shock exists, then it has a sharply reduced efficiency at accelerating relativistic particles from the kinetic energy of the blast wave. We also looked for a steepening of the spectral index along the boundary of the Crab Nebula itself, the signature of an outer shock. However, contrary to previous claims, no such steepening was found. The absence of any evidence at radio wavelengths that either the Crab Nebula or a hypothetical shell is interacting with the ambient medium leads to an interpretation that the supernova of A.D. 1054 was a peculiar low-energy event. C1 USN,RES LAB,DIV REMOTE SENSING,WASHINGTON,DC 20375. RP FRAIL, DA (reprint author), NATL RADIO ASTRON OBSERV,POB 0,SOCORRO,NM 87801, USA. NR 49 TC 34 Z9 34 U1 0 U2 2 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD DEC 1 PY 1995 VL 454 IS 2 BP L129 EP & PN 2 PG 0 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TF089 UT WOS:A1995TF08900014 ER PT J AU DASGUPTA, A AF DASGUPTA, A TI FINE-STRUCTURE RESOLVED DIELECTRONIC RECOMBINATION RATES FOR THE N=3 EXCITED CONFIGURATIONS OF FE-XVI-FE-XIX SO ASTROPHYSICAL JOURNAL SUPPLEMENT SERIES LA English DT Article DE ATOMIC DATA; ATOMIC PROCESSES; X-RAYS, GENERAL ID IONIZATION EQUILIBRIUM; RATE COEFFICIENTS; ISOELECTRONIC SEQUENCE; FLUORINELIKE IONS; SELENIUM AB Spectroscopic analysis of X-ray emission lines from hot astrophysical plasmas. such as solar and cosmic X-ray sources, is a powerful tool in the determination of elemental abundances and temperature and density diagnostics of the emitting gas. This same analysis can be used to model high-temperature laboratory plasmas associated with magnetic and inertial confinement fusion as well as with the study of X-ray laser research. Accurate determination of atomic rates is crucial for a reliable analysis. Dielectronic recombination is the dominant recombination process for incompletely ionized plasmas. The rate coefficients for dielectronic recombination of several ionization stages of the astrophysically abundant element iron (Fe XVI-Fe XIX) are presented at the fine-structure levels of the n = 3 excited states at several temperatures. The rate coefficients are calculated for a Maxwellian electron distribution in a low-density corona approximation. The dielectronic recombination process involves a large number of doubly excited states of the recombined ions and computations of many radiative as well as autoionization rates from these states. In this calculation we include doubly excited states that are formed by the free electron captured up to very high Rydberg states and detailed calculations of all possible dipole allowed radiative transitions and all dipole as well as nondipole autoionization transitions. Transitions to excited states of the recombining ion from all open autoionization channels, which have a significant effect in reducing the rate coefficients (as presented in the works of Jacobs et al.), are also included in our calculations. These calculations were carried out in the isolated resonance approximation using the Hartree-Fock method with relativistic corrections (as described by Cowan). The dielectronic recombination rate coefficients were evaluated at many temperatures encompassing the range around the temperature of maximum abundance. These J-resolved data will be extremely useful for accurate ionization balance calculations for astrophysical as well as laboratory iron plasmas. RP DASGUPTA, A (reprint author), USN,RES LAB,DIV PLASMA PHYS,RADIAT HYDRODYNAM BRANCH,WASHINGTON,DC 20375, USA. NR 27 TC 6 Z9 6 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0067-0049 J9 ASTROPHYS J SUPPL S JI Astrophys. J. Suppl. Ser. PD DEC PY 1995 VL 101 IS 2 BP 401 EP 422 DI 10.1086/192247 PG 22 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TF256 UT WOS:A1995TF25600009 ER PT J AU VOGE, VM HASTINGS, JD DREW, WE AF VOGE, VM HASTINGS, JD DREW, WE TI CONVULSIVE SYNCOPE IN THE AVIATION ENVIRONMENT SO AVIATION SPACE AND ENVIRONMENTAL MEDICINE LA English DT Review ID UNKNOWN ORIGIN; MECHANISMS; EPILEPSY; SEIZURES AB Syncope in the aviation environment can be a very difficult problem to assess. Even more difficult is the differential diagnosis between convulsive syncope and epilepsy after the first event. This paper discusses syncope in general and the differential diagnosis between vasovagal syncope and other forms of syncope. About 50% of all syncopal episodes cannot be identified as to etiology. However, a benign outcome for a single syncopal episode, non-cardiac in origin, is the norm. The diagnosis of syncope is discussed, emphasizing that a meticulous history from an observer or the patient, a good physical examination, and an ECC are the cornerstones of diagnosis. Other diagnostic venues are discussed. Convulsive syncope occurs in only about 12% of syncopal episodes, 65% of these being vasovagal in origin. The other 35% are due to a variety of causes. We found no good algorithm to differentiate convulsive syncope from epilepsy. We reviewed the literature to develop a differential diagnostic table, focusing on: age, awake status, position, emotional/physiologic stressors, onset, aura, appearance, injury on falling, seizure characteristics, automatism, length of unconsciousness and subsequent confusion, pulse characteristics, blood pressure, urinary incontinence, seizure duration, recovery time post-event, post-seizure sequelae, amnesia, posture vs. recovery, EEG characteristics, and the value of sophisticated diagnostic procedures. C1 USN,SCH HLTH SCI BETHESDA DETACHMENT,FT SAM HOUSTON,TX. ARMSTRONG LAB,DIV CLIN SCI,BROOKS AFB,TX. FAA,BROOKS AFB,TX. NR 45 TC 4 Z9 4 U1 0 U2 0 PU AEROSPACE MEDICAL ASSOC PI ALEXANDRIA PA 320 S HENRY ST, ALEXANDRIA, VA 22314-3579 SN 0095-6562 J9 AVIAT SPACE ENVIR MD JI Aviat. Space Environ. Med. PD DEC PY 1995 VL 66 IS 12 BP 1198 EP 1204 PG 7 WC Public, Environmental & Occupational Health; Medicine, General & Internal; Sport Sciences SC Public, Environmental & Occupational Health; General & Internal Medicine; Sport Sciences GA TG912 UT WOS:A1995TG91200013 PM 8747617 ER PT J AU Turner, DC Chang, CY Fang, K Brandow, SL Murphy, DB AF Turner, DC Chang, CY Fang, K Brandow, SL Murphy, DB TI Selective adhesion of functional microtubules to patterned silane surfaces SO BIOPHYSICAL JOURNAL LA English DT Article ID COPLANAR MOLECULAR ASSEMBLIES; SOLID SUPPORTS; KINESIN; MONOLAYERS; DYNEIN; IMMOBILIZATION; ADSORPTION; PROTEINS; INVITRO; FABRICATION AB We show that microtubule polymers can be immobilized selectively on lithographically patterned silane surfaces while retaining their native properties. Silane films were chemisorbed on polished silicon wafers or glass coverslips and patterned using a deep UV lithographic process developed at the Naval Research Laboratory. Hydrocarbon and fluorocarbon alkyl silanes, as well as amino and thiol terminal alkyl silanes, were investigated as substrates for microtubule adhesion with retention of biological activity. Microtubules were found to adhere strongly to amine terminal silanes while retaining the ability to act as substrates for the molecular motor protein kinesin. Aminosilane patterns with linewidths varying from 1 to 50 mu m were produced lithographically and used to produce patterns of selectively adhered microtubules. Microtubules were partially aligned on the patterned lines by performing the immobilization in a fluid flow field. Patterns were imaged with atomic force microscopy and differential interference contrast microscopy. Motility assays were carried out using kinesin-coated beads and observed with differential interference contrast microscopy. Kinesin bead movement on the patterned microtubules was comparable to movement on microtubule control surfaces. C1 GEORGE WASHINGTON UNIV,DEPT ELECT ENGN & COMP SCI,WASHINGTON,DC 20052. JOHNS HOPKINS UNIV,SCH MED,DEPT CELL BIOL,BALTIMORE,MD 21205. RP Turner, DC (reprint author), USN,RES LAB,CTR BIOMOLEC SCI & ENGN,CODE 6930,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 41 TC 76 Z9 78 U1 0 U2 13 PU BIOPHYSICAL SOCIETY PI BETHESDA PA 9650 ROCKVILLE PIKE, BETHESDA, MD 20814-3998 SN 0006-3495 J9 BIOPHYS J JI Biophys. J. PD DEC PY 1995 VL 69 IS 6 BP 2782 EP 2789 PG 8 WC Biophysics SC Biophysics GA TV018 UT WOS:A1995TV01800059 PM 8599684 ER PT J AU Limjoco, UR AF Limjoco, UR TI The ambiguous mammography report and needle-directed biopsies SO CANADIAN JOURNAL OF SURGERY LA English DT Letter RP Limjoco, UR (reprint author), USN HOSP,SURG SERV,TWENTYNINE PALMS,CA, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU CANADIAN MEDICAL ASSOCIATION PI OTTAWA PA 1867 ALTA VISTA DR, OTTAWA ON K1G 3Y6, CANADA SN 0008-428X J9 CAN J SURG JI Can. J. Surg. PD DEC PY 1995 VL 38 IS 6 BP 552 EP 552 PG 1 WC Surgery SC Surgery GA TK312 UT WOS:A1995TK31200019 PM 7497375 ER PT J AU Quinonez, C Morgan, CD Covington, JW Ellison, D Wester, D Nordin, S Polich, JM Murphy, C AF Quinonez, C Morgan, CD Covington, JW Ellison, D Wester, D Nordin, S Polich, JM Murphy, C TI Task and EEG alpha effects on olfactory event-related potentials SO CHEMICAL SENSES LA English DT Meeting Abstract C1 UNIV CALIF SAN DIEGO, MED CTR, LA JOLLA, CA 92093 USA. SAN DIEGO STATE UNIV, SAN DIEGO, CA 92182 USA. USN, MED CTR, SAN DIEGO, CA 92152 USA. SCRIPPS CLIN & RES FDN, SAN DIEGO, CA USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0379-864X J9 CHEM SENSES JI Chem. Senses PD DEC PY 1995 VL 20 IS 6 BP 234 EP 234 PG 1 WC Behavioral Sciences; Food Science & Technology; Neurosciences; Physiology SC Behavioral Sciences; Food Science & Technology; Neurosciences & Neurology; Physiology GA TM989 UT WOS:A1995TM98900240 ER PT J AU Wieting, TJ Andreadis, TD Kidd, JM Quade, W Namenson, AI Libello, LF Schleisiger, CD Butler, CM AF Wieting, TJ Andreadis, TD Kidd, JM Quade, W Namenson, AI Libello, LF Schleisiger, CD Butler, CM TI Electromagnetic field investigations inside a hollow cylinder SO COMPEL-THE INTERNATIONAL JOURNAL FOR COMPUTATION AND MATHEMATICS IN ELECTRICAL AND ELECTRONIC ENGINEERING LA English DT Article; Proceedings Paper CT International Symposium on Electromagnetic Fields in Electrical Engineering (ISEF 95) CY 1995 CL THESSALONIKI, GREECE C1 USA,RES LAB,ADELPHI,MD 20783. CLEMSON UNIV,CLEMSON,SC 29634. RP Wieting, TJ (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 2 Z9 2 U1 0 U2 2 PU MCB UNIV PRESS LTD PI BRADFORD PA 60/62 TOLLER LANE, BRADFORD, W YORKSHIRE, ENGLAND BD8 9BY SN 0332-1649 J9 COMPEL JI Compel-Int. J. Comp. Math. Electr. Electron. Eng. PD DEC PY 1995 VL 14 IS 4 BP 223 EP 227 DI 10.1108/eb051946 PG 5 WC Computer Science, Interdisciplinary Applications; Engineering, Electrical & Electronic; Mathematics, Applied SC Computer Science; Engineering; Mathematics GA UY101 UT WOS:A1995UY10100046 ER PT J AU LEWIS, T AF LEWIS, T TI THE NETHEAD GANG SO COMPUTER LA English DT Note RP LEWIS, T (reprint author), NAVAL POSTGRAD SCH,CODE CS,MONTEREY,CA 93943, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0018-9162 J9 COMPUTER JI Computer PD DEC PY 1995 VL 28 IS 12 BP 8 EP 10 DI 10.1109/2.410133 PG 3 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA TJ260 UT WOS:A1995TJ26000002 ER PT J AU ELREWINI, H ALI, HH LEWIS, T AF ELREWINI, H ALI, HH LEWIS, T TI TASK-SCHEDULING IN MULTIPROCESSING SYSTEMS SO COMPUTER LA English DT Article AB A scheduling problem arises when concurrent parts of a parallel program must be arranged in time and space so that the program's overall execution time is minimized. A program can be viewed as a collection of tasks that may run serially or in parallel. The goal of scheduling is to determine an assignment of tasks to processing elements and to prioritize task execution to optimize certain performance measures. The authors look at different forms of the scheduling problem and survey relevant models, optimal algorithms, heuristic algorithms, and useful software tools. They provide models for representing parallel programs, parallel systems, and communication cost. Examples and algorithms illustrate various approaches to scheduling. The scheduling problem, which is NP-complete, has led to the development of numerous heuristics for approximating an optimal solution; each may work under differ ent circumstances. The effectiveness of these heuristics depends on factors such as grain size, interconnection topology, communication bandwidth, and program structure. Scheduling software tools represent another promising approach. Working with such tools can help a programmer find answers to numerous questions that arise in developing a parallel application. The authors describe three of these scheduling tools. C1 USN,POSTGRAD SCH,MONTEREY,CA. RP ELREWINI, H (reprint author), UNIV NEBRASKA,DEPT COMP SCI,OMAHA,NE 68182, USA. NR 12 TC 65 Z9 65 U1 0 U2 0 PU IEEE COMPUTER SOC PI LOS ALAMITOS PA 10662 LOS VAQUEROS CIRCLE, PO BOX 3014, LOS ALAMITOS, CA 90720-1264 SN 0018-9162 J9 COMPUTER JI Computer PD DEC PY 1995 VL 28 IS 12 BP 27 EP & DI 10.1109/2.476197 PG 0 WC Computer Science, Hardware & Architecture; Computer Science, Software Engineering SC Computer Science GA TJ260 UT WOS:A1995TJ26000005 ER PT J AU MILLER, AR MOSKOWITZ, IS AF MILLER, AR MOSKOWITZ, IS TI REDUCTION OF A CLASS OF FOX-WRIGHT-PSI-FUNCTIONS FOR CERTAIN RATIONAL PARAMETERS SO COMPUTERS & MATHEMATICS WITH APPLICATIONS LA English DT Article DE FOX-WRIGHT PSI FUNCTION; ZEROS OF TRINOMIALS; SPECIAL FUNCTIONS; INFORMATION THEORY AB The Fox-Wright Psi function is a special case of Fox's H-function and a generalization of the generalized hypergeometric function. In the present paper, we show that the Psi function reduces to a single generalized hypergeometric function when certain of its parameters are integers and to a finite sum of generalized hypergeometric functions when these parameters are rational numbers. Applications to the solution of algebraic trinomial equations and to a problem in information theory are provided. A connection with Meijer's G-function is also discussed. C1 GEORGE WASHINGTON UNIV,DEPT MATH,WASHINGTON,DC 20052. USN,RES LAB,CTR HIGH ASSURANCE COMP SYST,DIV INFORMAT TECHNOL,WASHINGTON,DC 20375. NR 18 TC 12 Z9 12 U1 0 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0898-1221 J9 COMPUT MATH APPL JI Comput. Math. Appl. PD DEC PY 1995 VL 30 IS 11 BP 73 EP 82 DI 10.1016/0898-1221(95)00165-U PG 10 WC Mathematics, Applied SC Mathematics GA TF128 UT WOS:A1995TF12800007 ER PT J AU JASON, PK AF JASON, PK TI OUT OF THE 60S - STORYTELLING AND THE VIETNAM GENERATION - WYATT,D SO CONTEMPORARY LITERATURE LA English DT Book Review RP JASON, PK (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV WISCONSIN PRESS PI MADISON PA JOURNAL DIVISION, 114 N MURRAY ST, MADISON, WI 53715 SN 0010-7484 J9 CONTEMP LITERATURE JI Contemp. Lit. PD WIN PY 1995 VL 36 IS 4 BP 702 EP 707 DI 10.2307/1208947 PG 6 WC Literature SC Literature GA TH227 UT WOS:A1995TH22700008 ER PT J AU JASON, PK AF JASON, PK TI SCRIPTURES FOR A GENERATION - WHAT WE WERE READING IN THE 60S - BEIDLER,PD SO CONTEMPORARY LITERATURE LA English DT Book Review RP JASON, PK (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU UNIV WISCONSIN PRESS PI MADISON PA JOURNAL DIVISION, 114 N MURRAY ST, MADISON, WI 53715 SN 0010-7484 J9 CONTEMP LITERATURE JI Contemp. Lit. PD WIN PY 1995 VL 36 IS 4 BP 702 EP 707 DI 10.2307/1208947 PG 6 WC Literature SC Literature GA TH227 UT WOS:A1995TH22700007 ER PT J AU CHOI, S SEIDMANN, A SUH, MW AF CHOI, S SEIDMANN, A SUH, MW TI DECISION-MODELS FOR DESIGNING AND PLANNING PRIVATE COMMUNICATION-NETWORKS SO DECISION SUPPORT SYSTEMS LA English DT Article; Proceedings Paper CT 2nd Workshop on Information Technologies and Systems (WTTS 92) CY DEC 12-13, 1992 CL DALLAS, TX DE PRIVATE NETWORKS; DATA NETWORKS; COMMUNICATION NETWORKS; DIGITAL CROSSCONNECT SYSTEMS; RECONFIGURABLE NETWORKS; TOPOLOGY DESIGN; DECISION SUPPORT SYSTEMS ID BACKBONE NETWORKS AB We consider the recently developed reconfigurable digital data networks consisting of T1/T3 circuits and Digital Crossconnect Systems (DCSs). A DCS is a device to patch base channels electronically from one T1/T3 circuit to another with a negligible queuing delay at the connecting node. We present new decision models for the design and circuit leasing policies of such digital backbone networks. Our model takes advantage of the special capabilities of the DCS technology and is likely to result in remarkable economic gains for the private network users. The formulation and analyses presented here simultaneously address the following problems: physical link and capacity selection, logical network configuration and channel assignment, and traffic routing on the logical network. The problem formulation results in a large-scale non-linear mixed integer program, and we propose an efficient solution methodology employing Lagrangean relaxation and subgradient optimization. Several numerical results illustrate the utility of our approach for these complex problems. We show that the economies of scale built into the tariff structure of these digital networks can be successfully exploited, and that the inherent flexibility of DCSs leads to logical networks that are dramatically different from their underlying physical topologies. C1 UNIV ROCHESTER,WILLIAM E SIMON GRAD SCH BUSINESS ADM,ROCHESTER,NY 14627. USN,POSTGRAD SCH,DEPT ADM SCI,MONTEREY,CA 93943. RP CHOI, S (reprint author), KOOKMIN UNIV,SCH BUSINESS ECON,SEOUL 136702,SOUTH KOREA. NR 31 TC 1 Z9 1 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0167-9236 J9 DECIS SUPPORT SYST JI Decis. Support Syst. PD DEC PY 1995 VL 15 IS 4 BP 389 EP 403 DI 10.1016/0167-9236(94)00048-5 PG 15 WC Computer Science, Artificial Intelligence; Computer Science, Information Systems; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA TK210 UT WOS:A1995TK21000009 ER PT J AU Hilton, JL Seidelmann, PK AF Hilton, JL Seidelmann, PK TI The asteroid ephemerides program at the US Naval Observatory SO EARTH MOON AND PLANETS LA English DT Article; Proceedings Paper CT International Meeting on Small Bodies in the Solar System and Their Interactions with the Planets CY AUG 08-12, 1994 CL MARIEHAMN, FINLAND AB The U.S. Naval Observatory has begun a program of ephemeris improvement and reference frame determination from the main belt asteroids. The program is, currently, starting out with a limited set of observations of the larger asteroids to determine the equator and equinox corrections for the USNO W1J00 transit circle observations catalog, and, if possible, improve the orbits of these asteroids based on this limited set of observations. For this project, transit circle observations of the Sun and the planets Mercury through Jupiter, are also being used to determine the equator, equinox, and ephemeris corrections. the next goal is to improve the orbits of the larger asteroids in the optical reference frame using observation series that cover a much longer period of time. This will allow the exploration of the differences between the dynamical reference frame based on radar observations of main belt asteroids and its relation with the optical reference frame. Other goals include the exploration of the mass distribution in the main asteroid belt from high precision observations, and the effect of this mass on the ephemerides of the major planets. RP Hilton, JL (reprint author), USN OBSERV,3450 MASSACHUSETTS AVE,WASHINGTON,DC 20392, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0167-9295 J9 EARTH MOON PLANETS JI Earth Moon Planets PD DEC PY 1995 VL 71 IS 3 BP 199 EP 206 DI 10.1007/BF00612958 PG 8 WC Astronomy & Astrophysics; Geosciences, Multidisciplinary SC Astronomy & Astrophysics; Geology GA TW226 UT WOS:A1995TW22600005 ER PT J AU TaylorFishwick, DA Siegel, JN AF TaylorFishwick, DA Siegel, JN TI Raf-1 provides a dominant but not exclusive signal for the induction of CD69 expression on T cells SO EUROPEAN JOURNAL OF IMMUNOLOGY LA English DT Article DE CD69; raf-1; calcium; T cell activation ID PROTEIN-KINASE-C; INTERLEUKIN-2 GENE-EXPRESSION; ACTIVATION INDUCER MOLECULE; PLATELET ACTIVATION; HUMAN-LYMPHOCYTES; ANTIGEN RECEPTOR; CYCLOSPORINE-A; NUCLEAR FACTOR; CALCINEURIN; PROLIFERATION AB Stimulation of the T cell antigen receptor (TCR) induces a number of intracellular signaling pathways which lead to the transcription of a variety of new genes. Of the newly synthesized proteins, the earliest to be detected on the cell surface is the type II integral membrane protein CD69. Cross-linking of this activation antigen induces signaling events related to T cell activation. The proto-oncogene product Ras has been reported to up-regulate CD69. However, which of the potential effecters of Ras induces the expression of CD69 has remained unclear. Using transient transfection, we have shown a constitutively active form of the serine/threonine kinase Raf-1 to be sufficient to induce CD69 expression in human Jurkat T cells. Raf-1 was further shown to be necessary for PMA-induced CD69 expression, since transfection of a dominant inhibitory form of Raf-1 blocked the up-regulation of CD69 by PMA. In addition, studies with the calcium ionophore ionomycin identified a previously uncharacterized pathway regulating the expression of CD69 in T cells. Elevation of intracellular calcium induced the expression of CD69 in both Jurkat cells and peripheral blood T cells. This effect was sensitive to the immunosuppressive drug cyclosporin A, indicating that calcium-induced CD69 expression is mediated by the protein phosphatase calcineurin. Taken together, these results define Raf-1 as the major signaling mediator of CD69 expression in T cells and suggest that multiple mechanisms exist to regulate the level of CD69 expression following TCR stimulation. RP TaylorFishwick, DA (reprint author), USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,SIGNAL TRANSDUCT BRANCH,CODE 0612,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. OI Taylor-Fishwick, David/0000-0002-6720-7482 NR 49 TC 47 Z9 47 U1 0 U2 3 PU VCH PUBLISHERS INC PI DEERFIELD BEACH PA 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788 SN 0014-2980 J9 EUR J IMMUNOL JI Eur. J. Immunol. PD DEC PY 1995 VL 25 IS 12 BP 3215 EP 3221 DI 10.1002/eji.1830251203 PG 7 WC Immunology SC Immunology GA TL721 UT WOS:A1995TL72100002 PM 8566003 ER PT J AU Siu, NF French, SL Wang, RB Hoffman, SL AF Siu, NF French, SL Wang, RB Hoffman, SL TI Plasmodium yoelii: Expression of circumsporozoite protein and sporozoite surface protein 2 by sporozoites in culture SO EXPERIMENTAL PARASITOLOGY LA English DT Article DE Plasmodium yoelii; circumsporozoite; sporozoite ID ANTIGENS C1 UNIV VIRGINIA,DEPT BIOL,CHARLOTTESVILLE,VA 22903. RP Siu, NF (reprint author), USN,MED RES INST,MALARIA PROGRAM,BETHESDA,MD 20889, USA. NR 21 TC 0 Z9 0 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 0014-4894 J9 EXP PARASITOL JI Exp. Parasitol. PD DEC PY 1995 VL 81 IS 4 BP 600 EP 603 DI 10.1006/expr.1995.1154 PG 4 WC Parasitology SC Parasitology GA TN324 UT WOS:A1995TN32400021 PM 8543002 ER PT J AU CHANDRASEKHARA, MS SQUIRES, DD WILDER, MC CARR, LW AF CHANDRASEKHARA, MS SQUIRES, DD WILDER, MC CARR, LW TI A PHASE-LOCKED HIGH-SPEED REAL-TIME INTERFEROMETRY SYSTEM FOR LARGE-AMPLITUDE UNSTEADY FLOWS SO EXPERIMENTS IN FLUIDS LA English DT Article AB A high-speed phase-locked interferometry system has been designed and developed for real-time measurements of dynamic stall flow over a pitching airfoil. Point diffraction interferograms of incipient flow separation over a sinusoidally oscillating airfoil have been obtained at framing rates of up to 20 kHz and for free stream Mach numbers of 0.3 and 0.45. The images were recorded on 35 mm ASA 125 and ASA 400 films using a drum camera. Special electronic timing and synchronizing circuits were developed to trigger the laser light source from the camera and to initiate acquisition of the interferogram sequence from any desired phase angle of oscillation. The airfoil instantaneous angle of attack data provided by an optical encoder was recorded via a FIFO data buffer into a microcomputer. The interferograms have been analyzed using software developed in-house to get quantitative flow density and pressure distributions. C1 USN,NASA,POSTGRAD SCH,JOINT INST AERONAUT,DEPT AERONAUT & ASTRONAUT,MONTEREY,CA 93943. SVERDRUP TECHNOL INC,MOFFETT FIELD,CA 94035. USN,NASA,INST MCAT,SAN JOSE,CA 95127. USA ATCOM,UNSTEADY VISCOUS FLOWS AEROFLIGHTDYNAM DIRECTORAT,MOFFETT FIELD,CA 94035. NASA,AMES RES CTR,FLUID DYNAM RES BRANCH,MOFFETT FIELD,CA 94035. NR 6 TC 1 Z9 1 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 PD DEC PY 1995 VL 20 IS 2 BP 61 EP 67 DI 10.1007/BF01061583 PG 7 WC Engineering, Mechanical; Mechanics SC Engineering; Mechanics GA TJ764 UT WOS:A1995TJ76400001 ER PT J AU Paluszkiewicz, T Curtin, TB Chao, SY AF Paluszkiewicz, T Curtin, TB Chao, SY TI Wind driven variability of the Amazon River plume on the continental shelf during the peak outflow season SO GEO-MARINE LETTERS LA English DT Article AB The hypothesis that variations of the Amazon plume are forced primarily by wind is further explored through a series of simplified numerical model simulations. The wind's role in the change in plume structure and the nature of this change are investigated for two events: a shift in wind direction from westward to southeastward and a reduction in magnitude of the westward wind speed. Under winds with a southeastward component, the plume is confined to below 5 degrees N; this simulation represents a rare but illustrative event showing how the balance of forces is quickly adjusted under changing winds. The freshest portions of the plume expand eastward, but are confined near the river mouth, as observed. The cross-shelf and along-shelf dynamic balances are similar in magnitude to those with westward wind stress, but the balance between the equatorial jet and buoyancy-driven cross-shelf flow is altered, controlling a new along-shelf position of the front. During wind-relaxation events, the plume widens near the mouth as a result of strong, eastward cross-shelf velocities associated with an equatorial Kelvin wave. C1 OFF NAVAL RES,ARLINGTON,VA 22217. UNIV MARYLAND,HORN POINT ENVIRONM LAB,CAMBRIDGE,MD 21613. RP Paluszkiewicz, T (reprint author), BATTELLE MEM INST,MARINE SCI LAB,SEQUIM,WA 98382,AUSTRALIA. NR 15 TC 4 Z9 4 U1 1 U2 2 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0276-0460 J9 GEO-MAR LETT JI Geo-Mar. Lett. PD DEC PY 1995 VL 15 IS 3-4 BP 179 EP 184 DI 10.1007/BF01204461 PG 6 WC Geosciences, Multidisciplinary; Oceanography SC Geology; Oceanography GA TN596 UT WOS:A1995TN59600011 ER PT J AU Bruce, JG AF Bruce, JG TI Near equatorial eddies off South America SO GEO-MARINE LETTERS LA English DT Article ID BRAZIL CURRENT RETROFLECTION; NORTH; ATLANTIC AB A considerable amount of the Amazon River water that is discharged into the equatorial Atlantic is then advected northward along the shelf by the strong North Brazil Current (NBC). Being relatively fresh, this water remains in the near-surface layer and can serve as an excellent tracer for the complex and variable flow of the offshore mesoscale eddies. Both surface salinity observations and CZCS (Coastal Zone Color Scanner) imagery can be mapped to estimate the circulation patterns of the eddies. Presented here are two sets of XBT (expendable bathythermograph) sections that give the thermal structure of eddies off the Demerara Rise (6-9 degrees N). They were occupied nearly contemporaneously with CZCS imagery obtained during October 1980 and November 1981. Several studies have shown from ship drift data, from CZCS observations, and from Geosat altimetry that, particularly during late summer and fall, the NBC is found to retroflect offshore to the east, supplying the North Equatorial Counter Current (NECC) and is associated with eddies along the coast. Good agreement is shown between the CZCS and a NAVOCEANO AXBT (airborne bathythermograph) survey during this period as well as observations of surface phytoplankton and geopotential anomaly from an earlier 1964 survey. Estimates of volume transport within the eddy structure indicate that at times the offshore retroflection during spring as well as autumn can amount to 10 x 10(6) m(3) s(-1). The pronounced eddy variability off South America is shown by comparing a number of past hydrographic surveys. These suggest that considerable spatial variability can occur as can seasonal changes in volume transport of the NBC and the associated eddy circulation. RP Bruce, JG (reprint author), USN,OCEANOG OFF,STENNIS SPACE CTR,MS 39522, USA. NR 13 TC 2 Z9 2 U1 2 U2 4 PU SPRINGER VERLAG PI NEW YORK PA 175 FIFTH AVE, NEW YORK, NY 10010 SN 0276-0460 J9 GEO-MAR LETT JI Geo-Mar. Lett. PD DEC PY 1995 VL 15 IS 3-4 BP 185 EP 194 DI 10.1007/BF01204462 PG 10 WC Geosciences, Multidisciplinary; Oceanography SC Geology; Oceanography GA TN596 UT WOS:A1995TN59600012 ER PT J AU LEAN, J BEER, J BRADLEY, R AF LEAN, J BEER, J BRADLEY, R TI RECONSTRUCTION OF SOLAR IRRADIANCE SINCE 1610 - IMPLICATIONS FOR CLIMATE-CHANGE SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID MAUNDER MINIMUM; CYCLE; LENGTH AB Solar total and ultraviolet (UV) irradiances are reconstructed annually from 1610 to the present. This epoch includes the Maunder Minimum of anomalously low solar activity (circa 1645-1715) and the subsequent increase to the high levels of the present Modern Maximum. In this reconstruction, the Schwabe (11-year) irradiance cycle and a longer term variability component are determined separately, based on contemporary solar and stellar monitoring. The correlation of reconstructed solar irradiance and Northern Hemisphere (NH) surface temperature is 0.86 in the pre-industrial period from 1610 to 1800, implying a predominant solar influence. Extending this correlation to the present suggests that solar forcing may have contributed about half of the observed 0.55 degrees C surface warming since 1860 and one third of the warming since 1970. C1 SWISS FED INST ENVIRONM SCI & TECHNOL,DUBENDORF,SWITZERLAND. UNIV MASSACHUSETTS,DEPT GEOSCI,AMHERST,MA 01003. RP LEAN, J (reprint author), USN,RES LAB,CTR SPACE RES,WASHINGTON,DC 20375, USA. OI Lean, Judith/0000-0002-0087-9639 NR 25 TC 710 Z9 742 U1 2 U2 59 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD DEC 1 PY 1995 VL 22 IS 23 BP 3195 EP 3198 DI 10.1029/95GL03093 PG 4 WC Geosciences, Multidisciplinary SC Geology GA TK191 UT WOS:A1995TK19100023 ER PT J AU RODRIGUEZ, P SIEFRING, CL HAAS, DG BERNHARDT, PA BAUMBACK, MM AF RODRIGUEZ, P SIEFRING, CL HAAS, DG BERNHARDT, PA BAUMBACK, MM TI EVIDENCE OF HF-DRIVEN WAVE INTERACTIONS IN THE IONOSPHERIC FOCUSED HEATING EXPERIMENT SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID PARAMETRIC-INSTABILITIES AB The Ionospheric Focused Heating rocket experiment created an ionospheric hole above the Arecibo HF radiowave heater by the release of an electron-attachment chemical. The hole served as a focusing lens for HF waves at 5.1 MHz and produced various plasma wave effects measured by onboard diagnostic instruments. In this report, we present evidence for the occurrence of plasma wave interactions driven by the HF pump at altitudes where the pump frequency is near the electron plasma frequency and one-half the electron plasma frequency. These interaction regions are observed on the upper side of the ionospheric hole. The data suggest that the frequency and wavenumber matching requirements for coupled waves are met in these regions. RP RODRIGUEZ, P (reprint author), USN,RES LAB,DIV PLASMA PHYS,WASHINGTON,DC 20375, USA. NR 13 TC 3 Z9 3 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD DEC 1 PY 1995 VL 22 IS 23 BP 3251 EP 3254 DI 10.1029/95GL02778 PG 4 WC Geosciences, Multidisciplinary SC Geology GA TK191 UT WOS:A1995TK19100037 ER PT J AU COKER, C HUNSUCKER, R LOTT, G AF COKER, C HUNSUCKER, R LOTT, G TI DETECTION OF AURORAL ACTIVITY USING GPS SATELLITES SO GEOPHYSICAL RESEARCH LETTERS LA English DT Article ID RADIO AB GPS (Global Positioning System) satellites and a receiver located at Fairbanks, Alaska are used to detect auroral activity. A technique for using GPS total electron content (TEC) data to detect auroral-E ionization (AEI) at all satellite line-of-sight elevations is presented. The location of AEI during auroral substorms is determined and is consistent with simultaneous magnetometer data. Maps of detected AEI events reveal the distribution of AEI in space and time. Additionally, a technique is presented for identifying the effects of the auroral oval E-layer on the TEC data. Particle precipitation measured by the TIROS satellite is closely related to variations in the TEC data. The effects of the oval are consistently seen in the TEC data for a variety of magnetic conditions. The location of the equatorward edge of the oval is determined during auroral substorms and compares well with a model of the oval and with individual TIROS passes. C1 RP CONSULTANTS,KLAMATH FALLS,OR 97601. USN,POSTGRAD SCH,ECAB,MONTEREY,CA 93943. RP COKER, C (reprint author), UNIV TEXAS,APPL RES LABS,POB 8029,AUSTIN,TX 78713, USA. NR 12 TC 26 Z9 27 U1 0 U2 0 PU AMER GEOPHYSICAL UNION PI WASHINGTON PA 2000 FLORIDA AVE NW, WASHINGTON, DC 20009 SN 0094-8276 J9 GEOPHYS RES LETT JI Geophys. Res. Lett. PD DEC 1 PY 1995 VL 22 IS 23 BP 3259 EP 3262 DI 10.1029/95GL03091 PG 4 WC Geosciences, Multidisciplinary SC Geology GA TK191 UT WOS:A1995TK19100039 ER PT J AU PORCH, D AF PORCH, D TI THE HALT IN THE MUD - FRENCH STRATEGIC-PLANNING FROM WATERLOO TO SEDAN - COX,GP SO HISTORIAN LA English DT Book Review RP PORCH, D (reprint author), USN,COLL WAR,WASHINGTON,DC 20350, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU PHI ALPHA THETA PI ALLENTOWN PA THE HISTORIAN 2333 LIBERTY STREET, ALLENTOWN, PA 18104 SN 0018-2370 J9 HISTORIAN JI Historian PD WIN PY 1995 VL 57 IS 2 BP 409 EP 410 PG 2 WC History SC History GA QE757 UT WOS:A1995QE75700054 ER PT J AU Kraiger, K Salas, E CannonBowers, JA AF Kraiger, K Salas, E CannonBowers, JA TI Measuring knowledge organization as a method for assessing learning during training SO HUMAN FACTORS LA English DT Article ID MODELS AB This paper applies the conceptual work of K. Kraiger, J. K. Ford, and E. Salas (1993) to the evaluation of two training programs. A method known as structural assessment (SA) was described and adapted for use in the evaluation of a training program for computer programming and a PC-based simulation of a naval decision-making task. SA represents and evaluates pairwise judgments of relatedness of concepts drawn from the training content domain. In the first study, SA scores of students (determined by similarity to an expert solution) were significantly higher after training than before but did not predict performance on a take-home exam 12 weeks later. In the second study, we manipulated training content by providing half the students with the goals and objectives of the transfer task (an advance organizer) before training and providing the other half with the same information after training. As hypothesized, SA scores were higher for those receiving the organizers before training; SA scores were also more strongly related to performance on the criterion task for this group. Implications of the results for training evaluation are discussed. C1 USN,AIR WARFARE CTR,ORLANDO,FL. RP Kraiger, K (reprint author), UNIV COLORADO,DEPT PSYCHOL,BOX 173,POB 173364,DENVER,CO 80217, USA. OI Cannon-Bowers, Janis/0000-0003-2154-4456 NR 34 TC 42 Z9 44 U1 1 U2 9 PU HUMAN FACTORS SOC PI SANTA MONICA PA BOX 1369, SANTA MONICA, CA 90406 SN 0018-7208 J9 HUM FACTORS JI Hum. Factors PD DEC PY 1995 VL 37 IS 4 BP 804 EP 816 DI 10.1518/001872095778995535 PG 13 WC Behavioral Sciences; Engineering, Industrial; Ergonomics; Psychology, Applied; Psychology SC Behavioral Sciences; Engineering; Psychology GA UA278 UT WOS:A1995UA27800010 ER PT J AU Hall, DC Goldberg, L AF Hall, DC Goldberg, L TI Interferometric near-field imaging technique for phase and refractive index profiling in large-area planar-waveguide optoelectronic devices SO IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS LA English DT Article ID WELL HETEROSTRUCTURE LASERS; HIGH-POWER; SEMICONDUCTOR AMPLIFIER; GAAS AB A versatile, interferometric optical technique is described for nondestructively imaging the near-field output phase uniformity and refractive index profile in broad-area optoelectronic waveguide devices or heterostructure materials, In active traveling-wave optical power amplifier devices, measurements are presented for thermal lensing, solder bond inhomogeneities, heatsink impedance, and carrier-lensing effects due to nonuniform gain saturation by the amplifier input beam, transverse amplified spontaneous emission, or intensity filaments, The thermal performance of diamond and copper heatsinks for highpower optical amplifiers is compared, In passive devices, the technique is used to observe heteroepitaxial material compositional uniformity, defects, photoelastic stress, and intentional structural waveguide index modifications, The technique has a phase and spatial resolution as low as lambda/100 and 1 mu m. The corresponding refractive index and temperature resolutions (dependent on device length) are as low as Delta n = 10(-5) and Delta T = 0.025 degrees C for 1000-mu m-long devices. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Hall, DC (reprint author), UNIV NOTRE DAME,DEPT ELECT ENGN,NOTRE DAME,IN 46556, USA. NR 33 TC 1 Z9 1 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 1077-260X J9 IEEE J SEL TOP QUANT JI IEEE J. Sel. Top. Quantum Electron. PD DEC PY 1995 VL 1 IS 4 BP 1017 EP 1029 DI 10.1109/2944.488678 PG 13 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA TY246 UT WOS:A1995TY24600007 ER PT J AU Prokes, SM AF Prokes, SM TI Spectroscopic study of red light emission in porous silicon SO IEEE JOURNAL OF SELECTED TOPICS IN QUANTUM ELECTRONICS LA English DT Article ID OPTICAL-PROPERTIES; LUMINESCENCE; PHOTOLUMINESCENCE; SI; FILMS; SPECTRA; WAFERS; FIBERS; BAND AB Since bulk silicon does not emit light in the visible part of the spectrum, the discovery of visible luminescence from porous silicon has been quite surprising and has generated significant interest. This material differs from bulk silicon in one important way, in that it consists of interconnected silicon nanostructures, having very large surface to volume ratios. The first emission mechanism proposed involved carrier recombination within quantum size silicon particles, but more recent work has shown that surface emission models may be more likely. The problems with the quantum confinement model will be discussed in view of current data, and an oxygen center luminescence model will be discussed, with supporting experimental data. A direct correlation between the presence of these centers and the red photoluminescence in both as-made and oxidized PSi will be presented. RP Prokes, SM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 43 TC 7 Z9 7 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1077-260X J9 IEEE J SEL TOP QUANT JI IEEE J. Sel. Top. Quantum Electron. PD DEC PY 1995 VL 1 IS 4 BP 1140 EP 1144 DI 10.1109/2944.488692 PG 5 WC Engineering, Electrical & Electronic; Optics; Physics, Applied SC Engineering; Optics; Physics GA TY246 UT WOS:A1995TY24600021 ER PT J AU Waltman, DJ Superczynski, MJ AF Waltman, DJ Superczynski, MJ TI High-temperature superconducting magnet motor demonstration SO IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY LA English DT Article AB A superconducting field winding, assembled with coils constructed with Bismuth 2223 HTS wire, has been successfully operated in an electric homopolar motor. At a field winding temperature of 4.2 K, the motor produced 125 kW of output power, At a temperature of 28 K, the motor power developed was 91 kW, These measured power levels are the highest that have been produced by an electric motor containing a HTS field winding. RP Waltman, DJ (reprint author), USN,CTR SURFACE WARFARE,CARDEROCK DIV,ANNAPOLIS,MD 21402, USA. NR 2 TC 6 Z9 7 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 1051-8223 J9 IEEE T APPL SUPERCON JI IEEE Trans. Appl. Supercond. PD DEC PY 1995 VL 5 IS 4 BP 3532 EP 3535 DI 10.1109/77.482146 PG 4 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA TU425 UT WOS:A1995TU42500007 ER PT J AU Pace, PE Schafer, JL Styer, D AF Pace, PE Schafer, JL Styer, D TI Optimum analog preprocessing for folding ADC's SO IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL SIGNAL PROCESSING LA English DT Article AB Folding analog-to-digital converters (ADC's) that use symmetrical number system (SNS) preprocessing, require fewer comparators than those that use conventional binary encoding. This paper considers an alternate SNS definition that considerably extends the dynamic range of the SNS ADC. The efficiency of this definition is compared to previous definitions and is shown to be optimum. As an example, a unipolar 7-b SNS ADC using pairwise relatively prime moduli m(1) = 4, m(2) = 5 and m(3) = 7 is evaluated numerically. Transfer functions are shown which detail encoding errors that occur when the folded input samples lie at one of the code transition points. To discard the encoding errors that occur, a decimation band is constructed at each transition point. The effectiveness of the decimation band in eliminating the encoding errors is also quantified. C1 UNIV CINCINNATI,DEPT MATH SCI,CINCINNATI,OH 45221. RP Pace, PE (reprint author), USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,MONTEREY,CA 93943, USA. NR 5 TC 16 Z9 16 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 1057-7130 J9 IEEE T CIRCUITS-II JI IEEE Trans. Circuits Syst. II-Analog Digit. Signal Process. PD DEC PY 1995 VL 42 IS 12 BP 825 EP 829 DI 10.1109/82.476181 PG 5 WC Engineering, Electrical & Electronic SC Engineering GA TM711 UT WOS:A1995TM71100009 ER PT J AU Turner, NH Bruning, AM AF Turner, NH Bruning, AM TI Analysis of electrical insulator surfaces by x-ray photoelectron spectroscopy SO IEEE TRANSACTIONS ON DIELECTRICS AND ELECTRICAL INSULATION LA English DT Article AB Our earlier studies centered on understanding the incipient failure mechanism in polyethylene (PE) as an insulation material. The results simulated conditions not measured in routine manufacturing or electric utility test procedures. These findings indicated that detectable changes with pure PE can occur on the surface of cavities (artificially produced), as observed by X-ray photoelectron spectroscopy (XPS). Because the prior studies were done with pure PE and cavities that were made for easy XPS analysis, the question remained ''would the findings from the earlier inquiry be relevant to materials used by the electrical utilities?'' To answer this question PE insulation was analysed from a series of commercial type cables that had undergone long-term testing. Occasionally oxygen was found by XPS on the interior surfaces of the more highly stressed PE cable samples. The estimated amount of oxygen was lower than that often found previously. The oxygenated carbon species were similar to those found previously, i.e., alcohols and/or ethers and carbonyls. Some outgassing, probably hydrocarbons, of the PE was observed. The role, if any, of these outgassing components on the failure of PE as an insulation material is unclear. C1 USN,RES LAB,SURFACE CHEM BRANCH,WASHINGTON,DC 20375. RP Turner, NH (reprint author), USN,RES LAB,SURFACE CHEM BRANCH,WASHINGTON,DC 20375, USA. NR 11 TC 3 Z9 3 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 1070-9878 J9 IEEE T DIELECT EL IN JI IEEE Trns. Dielectr. Electr. Insul. PD DEC PY 1995 VL 2 IS 6 BP 1140 EP 1146 DI 10.1109/94.484318 PG 7 WC Engineering, Electrical & Electronic; Physics, Applied SC Engineering; Physics GA TP750 UT WOS:A1995TP75000013 ER PT J AU Talmage, G Mazumder, S Brown, SH Sondergaard, NA AF Talmage, G Mazumder, S Brown, SH Sondergaard, NA TI Viscous and Joulean power losses in liquid-metal sliding electrical contacts with finite electrically conducting electrodes SO IEEE TRANSACTIONS ON ENERGY CONVERSION LA English DT Article; Proceedings Paper CT 1995 IEEE/PES Winter Meeting CY JAN 29-FEB 02, 1995 CL NEW YORK, NY SP IEEE, Power Engn Soc AB Designing high performance liquid-metal sliding electrical contacts for homopolar machinery requires a precise knowledge of the magnitudes of the viscous and Joulean losses under various operating conditions. The liquid metal, which is confined to a channel between a rotor and stator, is subjected to a large external magnetic induction while transporting current. Significant power losses can occur in these devices. The geometry and electrical conductivity of the channel walls have a significant effect on these losses. In past theoretical work, copper electrodes were generally treated as perfect electrical conductors as compared to the liquid metals. Calculations based on this perfectly conducting electrode approximation predicted unrealistically high power losses. In the present study, the effects of electrodes with finite conductivity on both the viscous dissipation and Joulean heating will be explored. Numerical results are presented for both radial and axial magnetic inductions. It is found that the magnetic induction orientation has a significant impact on the losses. C1 USN,CTR WARFARE,CARDEROCK DIV,ANNAPOLIS,MD 21402. RP Talmage, G (reprint author), PENN STATE UNIV,DEPT MECH ENGN,UNIVERSITY PK,PA 16802, USA. NR 11 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0885-8969 J9 IEEE T ENERGY CONVER JI IEEE Trans. Energy Convers. PD DEC PY 1995 VL 10 IS 4 BP 634 EP 644 DI 10.1109/60.475833 PG 11 WC Energy & Fuels; Engineering, Electrical & Electronic SC Energy & Fuels; Engineering GA TM769 UT WOS:A1995TM76900004 ER PT J AU Schmidt, DM Fleetwood, DM Schrimpf, RD Pease, RL Graves, RJ Johnson, GH Galloway, KF Combs, WE AF Schmidt, DM Fleetwood, DM Schrimpf, RD Pease, RL Graves, RJ Johnson, GH Galloway, KF Combs, WE TI Comparison of ionizing-radiation-induced gain degradation in lateral, substrate, and vertical PNP BJTs SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB A comparison is presented of ionizing-radiation-induced gain degradation in lateral, substrate, and vertical PNPs. The dose-rate dependence of current gain degradation in lateral PNP BJTs is even stronger than the dependence previously reported for NPN BJTs. Various mechanisms are presented and their relative significance for gain degradation in the lateral, substrate, and vertical PNPs is discussed. A detailed comparison of the lateral and substrate PNP devices is given. The specific lateral and substrate devices considered here are fabricated in the same process and possess identical emitters. Even though these devices have identical emitters and undergo the same processing steps, the lateral devices degrade significantly more than the substrate devices. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RLP RES INC,ALBUQUERQUE,NM 87122. USN,CTR SURFACE WARFARE,CRANE,IN 47522. RP Schmidt, DM (reprint author), UNIV ARIZONA,TUCSON,AZ 85721, USA. RI Schrimpf, Ronald/L-5549-2013 OI Schrimpf, Ronald/0000-0001-7419-2701 NR 18 TC 64 Z9 75 U1 1 U2 2 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1541 EP 1549 DI 10.1109/23.488748 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000003 ER PT J AU Babcock, JA Cressler, JD Vempati, LS Clark, SD Jaeger, RC Harame, DL AF Babcock, JA Cressler, JD Vempati, LS Clark, SD Jaeger, RC Harame, DL TI Ionizing radiation tolerance of high-performance SiGe HBT's grown by UHV/CVD SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID BASE BIPOLAR TECHNOLOGY; 77-K APPLICATIONS; PROFILE DESIGN; TRANSISTORS; NOISE; OPTIMIZATION AB The ionizing radiation tolerance of highperformance SiGe HBT's, grown by UHV/CVD and optimized for 77 K, has been investigated for the first time. Results at both 300 K and 77 K indicate that this SiGe technology is inherently radiation tolerant without additional processing steps. Perimeter-to-area analysis show parallel shifts in the collector and base current density for total radiation doses below 1.0 Mrad(Si). Relatively minor degradation in the current gain characteristics is observed for SiGe HBT's exposed to 1.0 Mrad(Si) of Co-60 gamma radiation, indicating that the technology is robust for many applications requiring a high degree of ionizing radiation tolerance. 1/f noise measurements made pre- and post-radiation show the appearance of a generation-recombination center in some of the SiGe HBT's after a total-dose exposure to 10.0 Mrad(Si). C1 USN,CTR SURFACE WARFARE,CRANE,IN 47522. IBM CORP,DIV MICROELECTR,HOPEWELL JCT,NY 12533. RP Babcock, JA (reprint author), AUBURN UNIV,ALABAMA MICROELECTR SCI & TECHNOL CTR,DEPT ELECT ENGN,AUBURN,AL 36849, USA. NR 42 TC 37 Z9 38 U1 1 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1558 EP 1566 DI 10.1109/23.488750 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000005 ER PT J AU Schwank, JR Sexton, FW Weatherford, TR McMorrow, D Knudson, AR Melinger, JS AF Schwank, JR Sexton, FW Weatherford, TR McMorrow, D Knudson, AR Melinger, JS TI Charge collection in GaAs MESFETs fabricated in semi-insulating substrates SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB Charge-collection in GaAs MESFETs fabricated in semi-insulating substrates is investigated. Current transients are measured at short times (similar to few picoseconds) after either an alpha-particle strike or a laser pulse. In addition, the total charge is obtained by integrating the collected current. Measurements show the existence of three mechanisms for charge collection: 1) the drift of holes and electrons to the gate and drain electrodes, respectively, 2) bipolar-gain, and 3) channel-modulation. The charge collected by drift of holes or electrons gives rise to an instrument limited response (within 20 ps) after a laser pulse. The bipolar-gain mechanism peaks in approximately similar to 200 ps and is responsible for most of the collected charge. The channel-modulation mechanism is responsible for charge collection at longer times. These results are different than previous results for MESFETs fabricated on top of a buried p-layer, where most of the charge was found to be collected by the channel-modulation mechanism. Our results indicate that in order to harden GaAs transistors to single event upset, one must use techniques that reduce the effects of the bipolar-gain and channel-modulation mechanisms. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Schwank, JR (reprint author), SANDIA NATL LABS,ALBUQUERQUE,NM 87185, USA. NR 14 TC 14 Z9 14 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1585 EP 1591 DI 10.1109/23.488753 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000008 ER PT J AU Clark, SD Bings, JP Maher, MC Williams, MK Alexander, DR Pease, RL AF Clark, SD Bings, JP Maher, MC Williams, MK Alexander, DR Pease, RL TI Plastic packaging and burn-in effects on ionizing dose response in CMOS microcircuits SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB Results are reported from an investigation of the effects of packaging and burn-in on the post-irradiation performance of National Semiconductor 54AC02 Quad 2-input NOR gates. The test population nias drawn from a single wafer fabricated in the National process qualified under Mil-Prf-38535 to an ionizing radiation hardness of 100 krads(Si). The test sample was divided between plastic and ceramic packages. Additionally, half of the plastic samples and half of the ceramic samples received a 168 hour/125 degrees C burn-in. Tno irradiation schemes were used. The first followed Mil-Std-883 Method 1019.4 (dose rate = 50 rads(Si)/s). The second used a ion, dose rate (0.1 rads(Si)/s). AC. DC, transfer function and functional behavior were monitored throughout the tests. Significant differences among the package types and burn-in variations were noted with the plastic, burned-in components demonstrating enhanced degradation. They how the worst post-irradiation parameter values as well as very broad post-irradiation parameter distributions. Degradation is highly dependent upon dose rate and anneal conditions. Two different radiation induced leakage paths have been identified, and their characteristics have been correlated to variations in high dose rate and low dose rate circuit performance; Caution is recommended for system developers to ensure that radiation hardness characterization is performed for the same package/burn-in configuration to be used in the system. C1 NATL SEMICOND CORP,SANTA CLARA,CA 95052. MISSION RES CORP,SANTA BARBARA,CA 93102. RLP RES INC,ALBUQUERQUE,NM. RP Clark, SD (reprint author), USN,CTR SURFACE WARFARE,CRANE,IN 47522, USA. NR 6 TC 22 Z9 22 U1 0 U2 4 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1607 EP 1614 DI 10.1109/23.488756 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000011 ER PT J AU Schrimpf, RD Graves, RJ Schmidt, DM Fleetwood, DM Pease, RL Combs, WE DeLaus, M AF Schrimpf, RD Graves, RJ Schmidt, DM Fleetwood, DM Pease, RL Combs, WE DeLaus, M TI Hardness-assurance issues for lateral PNP bipolar junction transistors SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID DEVICE RESPONSE; X-RAY AB The dose-rate dependence of gain degradation in lateral PNP transistors is even stronger than the dependence previously reported for NPN BJTs. In this work, several hardness-assurance approaches are examined and compared to experimental results. obtained at low dose rates. The approaches considered include irradiation at high dose rates while at elevated temperature and high-dose-rate irradiation followed by annealing. The lateral PNP transistors continue to degrade during post-irradiation annealing, in sharp contrast to NPN devices studied previously. High-temperature conditions significantly increase the degradation during high-dose-rate irradiation, with the amount of degradation continuing to increase with temperature throughout the range studied here (up to 125 degrees C). The high-temperature degradation is nearly as great as that observed at very low dose rates, and is even greater when differences between Co-60 and x-ray irradiation are accounted for. Since high-temperature irradiation has previously been shown to enhance the degradation in NPN transistors, this appears to be a promising hardness-assurance approach for bipolar integrated circuits. Based on these results, preliminary testing recommendations are discussed. C1 SANDIA NATL LABS,ALBUQUERQUE,NM 87185. RLP RES,ALBUQUERQUE,NM 87122. USN,CTR SURFACE WARFARE,CRANE,IN 47522. ANALOG DEVICES INC,WILMINGTON,MA 01887. RP Schrimpf, RD (reprint author), UNIV ARIZONA,DEPT ELECT & COMP ENGN,TUCSON,AZ 85721, USA. RI Schrimpf, Ronald/L-5549-2013 OI Schrimpf, Ronald/0000-0001-7419-2701 NR 18 TC 41 Z9 45 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1641 EP 1649 DI 10.1109/23.488761 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000016 ER PT J AU Stahlbush, RE Brown, GA AF Stahlbush, RE Brown, GA TI Bulk trap formation by high temperature annealing of buried thermal oxides SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID SIMOX; ELECTRON; SIO2; CHARGE; HOLE; IMPURITIES; DEFECTS; SILICON; OXYGEN AB The formation of electron and hole traps has been investigated in thermally grown silicon dioxide that was encapsulated by polysilicon and annealed at temperatures ranging from 1100 to 1325 degrees C. Three buried oxide thicknesses have been examined: 25, 100 and 400 nm. Using the cryogenic detrapping technique, trapping of holes and electrons in traps up to 2 eV deep (tunneling depth) has been measured. The dependence of trap formation on the oxide thickness and annealing temperature suggest that the oxygen deficiency responsible for trap formation is diffusion limited and the formation rate is consistent with the SiO diffusion data published by Cellers et al. [1]. In addition to the shallow electron trap at 1 eV, a deeper electron trap at 1.7 eV that remains occupied at room temperature is present during the early stages of oxygen depletion. Once the formation of electron traps has saturated, the deeper trap is not observed. During irradiation, the ratio of the number of electrons captured in traps or recombining with trapped holes to the number escaping the oxide is affected by the oxide thickness. The effect of the oxide thickness on the retension of electrons within the oxide is discussed. TEM micrographs show within the polysilicon during the interface between the polysilicon and oxide, but no effect on charge trapping has been observed. C1 TEXAS INSTRUMENTS INC,DALLAS,TX 75265. RP Stahlbush, RE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 29 TC 9 Z9 9 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1708 EP 1716 DI 10.1109/23.488769 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000024 ER PT J AU Dussault, H Howard, JW Block, RC Stapor, WJ Knudson, AR McDonald, PT Pinto, MR AF Dussault, H Howard, JW Block, RC Stapor, WJ Knudson, AR McDonald, PT Pinto, MR TI High-energy heavy-ion-induced charge transport across multiple junctions SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID COLLECTION; SIMULATION AB High-energy heavy ion experiments and numerical simulations show that two or more junctions bridged by an ion track respond in a coupled manner. The potential difference across the structure strongly affects the amount of charge collected at each of the junctions. Experiments with 1.7 GeV Au-197 ions indicate that, for emitter biases less than or equal to 0.0 volts and potential differences of 5 or more volts, more charge may be collected at a junction than was initially deposited by the ion. Simulations show that, when an ion track intersects multiple junctions of a device, the responses of the individual junctions cannot be modeled independently of each other. Simulation and experimental results indicate that charge transport in a multiple junction structure cannot be modeled using simple geometry or funneling assumptions. C1 ROME LAB,RL ERDA,GRIFFISS AFB,NY 13441. NASA,GEORGE C MARSHALL SPACE FLIGHT CTR,MSFC EL54,HUNTSVILLE,AL 35812. USN,RES LAB,WASHINGTON,DC 20375. SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. AT&T BELL LABS,MURRAY HILL,NJ 07974. RP Dussault, H (reprint author), RENSSELAER POLYTECH INST,TROY,NY 12180, USA. NR 10 TC 3 Z9 4 U1 0 U2 1 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1780 EP 1788 DI 10.1109/23.488779 PN 1 PG 9 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000034 ER PT J AU Fouts, DJ Weatherford, TR McMorrow, D Wolfe, K VanDyk, SE Melinger, JS Tran, LH Campbell, AB AF Fouts, DJ Weatherford, TR McMorrow, D Wolfe, K VanDyk, SE Melinger, JS Tran, LH Campbell, AB TI Single event upsets in gallium arsenide pseudo-complementary MESFET logic SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID CHARGE-COLLECTION; GAAS-MESFETS AB An introduction to gallium arsenide (GaAs) Pseudo-Complementary MESFET Logic (PCML) circuits is presented. PCML was developed to reduce the sensitivity of high-speed GaAs logic to radiation-induced single event upsets (SEUs). Experiments for testing the single-event upset (SEU) sensitivity of GaAs PCML integrated circuits (ICs) are described. The results of the experiments are analyzed. This new type of high-speed, low-power, GaAs logic provides decreased sensitivity to SEUs compared to more traditional circuit designs such as Directly-Coupled FET Logic (DCFL). PCML is fully compatible with existing GaAs E/D MESFET fabrication processes, such as those commonly used to make DCFL. C1 SFA INC,LANDOVER,MD 20785. USN,RES LAB,WASHINGTON,DC 20375. RP Fouts, DJ (reprint author), USN,POSTGRAD SCH,DEPT ELECT & COMP ENGN,CODE EC-FS,MONTEREY,CA 93943, USA. NR 14 TC 1 Z9 1 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1829 EP 1836 DI 10.1109/23.488786 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000041 ER PT J AU McMorrow, D Weatherford, TR Curtice, WR Knudson, AR Buchner, S Melinger, JS Tran, LH Campbell, AB AF McMorrow, D Weatherford, TR Curtice, WR Knudson, AR Buchner, S Melinger, JS Tran, LH Campbell, AB TI Elimination of charge-enhancement effects in GaAs FETs with a low-temperature grown GaAs buffer layer SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID MOLECULAR-BEAM EPITAXY; COLLECTION; MESFETS; REDUCTION; UPSETS; MODEL AB The use of a low temperature grown GaAs (LT GaAs) buffer layer in GaAs FETs is shown via computer simulation and experimental measurement to reduce ion-induced charge collection by two to three orders of magnitude. This reduction in collected charge is associated with the efficient reduction of charge-enhancement mechanisms in the FETs. Error rate calculations indicate that the soft error rate of LT GaAs integrated circuits will be reduced by several orders of magnitude when compared to conventional FET-based GaAs ICs. RP McMorrow, D (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 38 TC 18 Z9 18 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1837 EP 1843 DI 10.1109/23.488787 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000042 ER PT J AU Marshall, PW Dale, CJ Weatherford, TR LaMacchia, M Label, KA AF Marshall, PW Dale, CJ Weatherford, TR LaMacchia, M Label, KA TI Particle-induced mitigation of SEU sensitivity in high data rate GaAs HIGFET technologies SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB Proton and heavy ion data on two GaAs HIGFET logic families, one source coupled (SCFL) and the other complementary (C-HIGFET), show the importance of dynamic testing and develop a new technique for mitigating SEU sensitivity by minimizing charge enhancement effects. C1 SFA INC,LANDOVER,MD 20785. MOTOROLA INC,PHOENIX,AZ. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. RP Marshall, PW (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 13 TC 15 Z9 17 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1844 EP 1849 DI 10.1109/23.489225 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000043 ER PT J AU Marshall, PW Dale, CJ Weatherford, T Carts, M McMorrow, D Peczalski, A Baier, S Nohava, J Skogen, J AF Marshall, PW Dale, CJ Weatherford, T Carts, M McMorrow, D Peczalski, A Baier, S Nohava, J Skogen, J TI Heavy ion SEU immunity of a GaAs complementary HIGFET circuit fabricated on a low temperature grown buffer layer SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID MOLECULAR-BEAM EPITAXY; LOW SUBSTRATE TEMPERATURES; MESFETS; DYNAMICS AB We compare dynamic SEU characteristics of GaAs complementary HIGFET devices fabricated on conventional semi-insulating substrates versus low temperature grown GaAs (LT GaAs) buffer layers. Heavy ion test results on shift register and flip-flop devices from the same process lot demonstrate that the LT GaAs layer provides immunity from upsets, even at an LET value of 90 MeV . cm(2)/mg. This result is also consistent with pulsed laser measurements performed on the same flip-flop circuits used in the ion test. C1 USN,RES LAB,WASHINGTON,DC 20375. HONEYWELL SYST & RES CTR,BLOOMINGTON,MN 55420. RP Marshall, PW (reprint author), SFA INC,LANDOVER,MD 20785, USA. NR 20 TC 17 Z9 17 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1850 EP 1855 DI 10.1109/23.489226 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000044 ER PT J AU Sanford, TWL Halbleib, JA Cooperstein, G Weber, BV AF Sanford, TWL Halbleib, JA Cooperstein, G Weber, BV TI Potential enhancement of warm x-ray dose from a reflexing bremsstrahlung diode SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID FLASH AB The potential for generating intense bursts of warm x rays (20 to 60 keV) using electron reflexing diodes on pulsed-power accelerators is evaluated with the TIGER Monte Carlo code, showing that hundreds of kilojoules of warm x rays can be generated under idealized conditions, for a Jupiter (60-MA, 5-MV, 100-ns) class accelerator. The calculations are compared with data from Gamble-II experiments and applied to two suggested Jupiter diode configurations. If the simultaneous irradiation from the high-energy tail of the bremsstrahlung which accompanies the warm x rays is a concern, then the reflexing technique is shown to be limited to the irradiation of targets thinner than similar to 400 mu m for low-Z targets like aluminum and thinner than similar to 5 mu m for high-Z targets like gold. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Sanford, TWL (reprint author), SANDIA NATL LABS,POB 5800,ALBUQUERQUE,NM 87185, USA. NR 17 TC 8 Z9 8 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1902 EP 1909 DI 10.1109/23.489233 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000051 ER PT J AU Allenspach, M Mouret, I Titus, JL Wheatley, CF Pease, RL Brews, JR Schrimpf, RD Galloway, KF AF Allenspach, M Mouret, I Titus, JL Wheatley, CF Pease, RL Brews, JR Schrimpf, RD Galloway, KF TI Single-event gate-rupture in power MOSFETs: Prediction of breakdown biases and evaluation of oxide thickness dependence SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB Single-Event Gate-Rupture (SEGR) in Vertical Double Diffused Metal-Oxide Semiconductor (VDMOS) power transistors exposed to a given heavy ion LET occurs at a critical gate bias that depends on the applied drain bias. A method of predicting the critical gate bias for non-zero drain biases is presented. The method requires as input the critical gate bias vs. LET for V-DS = OV. The method also predicts SEGR sensitivity to improve for larger gate-oxide thicknesses. All predictions show agreement with experimental test data. C1 AEROSPATIALE,LES MUREAUX,FRANCE. USN,CTR SURFACE WARFARE,CRANE,IN 47522. RLP RES INC,ALBUQUERQUE,NM 87122. RP Allenspach, M (reprint author), UNIV ARIZONA,TUCSON,AZ 85721, USA. RI Schrimpf, Ronald/L-5549-2013 OI Schrimpf, Ronald/0000-0001-7419-2701 NR 10 TC 29 Z9 31 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1922 EP 1927 DI 10.1109/23.489234 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000053 ER PT J AU Titus, JL Wheatley, CF Burton, DI Mouret, I Allenspach, M Brews, J Schrimpf, R Galloway, K Pease, RL AF Titus, JL Wheatley, CF Burton, DI Mouret, I Allenspach, M Brews, J Schrimpf, R Galloway, K Pease, RL TI Impact of oxide thickness on SEGR failure in vertical PowerMOSFETs; Development of a semi-empirical expression SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID SINGLE-EVENT BURNOUT; INDUCED ELECTRICAL BREAKDOWN; POWER MOSFETS; SILICON CAPACITORS; HEAVY-IONS; MECHANISM AB This paper investigates the role that the gate oxide thickness (T-OX) plays on the gate and drain failure threshold voltages required to induce the onset of single-event gate rupture (SEGR). The impact of gate oxide thickness on SEGR is experimentally determined from vertical power metal-oxide semiconductor field-effect transistors (MOSFETs) having identical process and design parameters, except for the gate oxide thickness. Power MOSFETs from five variants were specially fabricated with nominal gate oxide thicknesses of 30, 50, 70, 100, and 150 nm. Devices from each variant were characterized to mono-energetic ion beams of Nickel, Bromine, Iodine, and Gold. Employing different bias conditions, failure thresholds for the onset of SEGR were determined for each oxide thickness. Applying these experimental test results, the previously published empirical expression [1] is extended to include the effects of gate oxide thickness. In addition, observations of ion angle, temperature, cell geometry, channel conductivity, and curvature at high drain voltages are briefly discussed. C1 HARRIS SEMICOND INC,MOUNTAIN TOP,PA 18707. UNIV ARIZONA,TUCSON,AZ 85721. RLP RES INC,ALBUQUERQUE,NM 87122. RP Titus, JL (reprint author), USN,CTR SURFACE WARFARE,CRANE,IN 47522, USA. RI Schrimpf, Ronald/L-5549-2013 OI Schrimpf, Ronald/0000-0001-7419-2701 NR 24 TC 42 Z9 43 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 1928 EP 1934 DI 10.1109/23.489236 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000054 ER PT J AU Colerico, CW Serreze, HB Messenger, SR Xapsos, MA Burke, EA AF Colerico, CW Serreze, HB Messenger, SR Xapsos, MA Burke, EA TI Alpha particle simulation of space radiation damage effects in semiconductor devices SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB We describe a method that uses an Am-241 alpha particle source to simulate effects of space radiation damage to semiconductor devices. By applying a unique combination of analytic and numerical techniques to data obtained from alpha irradiation experiments, device response to protons and other radiation types can be predicted. The techniques enable the interpretation of the alpha data by deriving the damage-depth profiles for both ionizing and nonionizing damage in InP devices. The results agree well when compared to the results from proton and electron irradiation of the same type of devices. C1 SFA INC,LANDOVER,MD 20875. USN,RES LAB,WASHINGTON,DC 20375. RP Colerico, CW (reprint author), SPIRE CORP,PATRIOTS PK,BEDFORD,MA 01730, USA. NR 5 TC 7 Z9 7 U1 0 U2 3 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 2089 EP 2094 DI 10.1109/23.489257 PN 1 PG 6 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000075 ER PT J AU Lawrence, RK Ioannou, DE Hughes, HL McMarr, PJ Mrstik, BJ AF Lawrence, RK Ioannou, DE Hughes, HL McMarr, PJ Mrstik, BJ TI Charge trapping versus buried oxide thickness for SIMOX structures SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID SILICON AB Radiation induced charge trapping versus Buried-Oxide (BOX) thickness on various Separation-by-IMplantation-of-OXygen (SIMOX) buried oxides has been determined. An inflection point has been observed in the voltage shift versus buried oxide thickness relationship. As such, the radiation-induced voltage shifts for thin buried-oxides are greater than what could be expected from a simple square-law relationship. However, for irradiation applied fields higher than that of typical buried-oxide fringing fields the thickness relationship obeys a square-law. These results can be explained by the location and magnitude of the radiation induced oxide charge centroid and its relationship to the BOX thickness. The location of the centroid for trapped positive charge is dependant on the radiation-induced hole mobility, which is related to SIMOX processing, as well as on geometry and charge saturation. C1 GEORGE MASON UNIV,FAIRFAX,VA 22030. USN,RES LAB,WASHINGTON,DC 20375. SACHS FREEMAN ASSOCIATES INC,LANDOVER,MD 20785. RP Lawrence, RK (reprint author), ARACOR,WASHINGTON,DC 20375, USA. NR 12 TC 7 Z9 8 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 2114 EP 2121 DI 10.1109/23.489261 PN 1 PG 8 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000079 ER PT J AU Liu, ST Jenkins, WC AF Liu, ST Jenkins, WC TI The effect of power supply voltage scaling on the total dose radiation response of fully-depleted SOI MOS transistors SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE ID THRESHOLD VOLTAGE; MOSFETS AB The radiation induced front channel threshold voltage shift (Delta V-t1) of fully-depleted MOSFETs fabricated in SIMOX is investigated and analyzed as a function of power supply voltage (V-DD) from 5.5 to 1.2 volts. This work shows that the expected improvement in front channel radiation hardness by reducing V-DD is not fully realized due to 1) a radiation induced off-set voltage at V-DD = 0 V, and 2) enhanced coupling of the buried oxide charge to the front channel. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Liu, ST (reprint author), HONEYWELL INC,SOLID STATE ELECTR CTR,PLYMOUTH,MN 55441, USA. NR 6 TC 1 Z9 1 U1 0 U2 0 PU IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017-2394 SN 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 2122 EP 2126 DI 10.1109/23.489262 PN 1 PG 5 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000080 ER PT J AU Titus, JL Gehlhausen, MA Desko, JC Nguyen, TT Shibib, MA Hollenbach, KE Roberts, DJ AF Titus, JL Gehlhausen, MA Desko, JC Nguyen, TT Shibib, MA Hollenbach, KE Roberts, DJ TI Characterization of a fully resonant, 1-MHZ, 25-Watt, DC/DC converter fabricated in a rad-hard BiCMOS/high-voltage process SO IEEE TRANSACTIONS ON NUCLEAR SCIENCE LA English DT Article; Proceedings Paper CT 32nd Annual International Nuclear and Space Radiation Effects Conference (NSREC) CY JUL 17-21, 1995 CL MADISON, WI SP IEEE AB This paper presents the characterization of a DC/DC converter prototype when its power integrated circuit (PIC) chip is exposed to total dose, dose rate, neutron, and heavy ion environments. This fully resonant, 1-MHZ, 25-Watt, DC/DC converter is composed of a brassboard, populated with input/output filters, isolation transformers, output rectifier, capacitors, resistors, and PIC chip, integrating the primary-side control circuitry, secondary-side control circuitry, power switch, gate-drive circuitry, and voltage references. The brassboard is built using commercial off-the-shelf components; and the PIC chip is fabricated using AT&T's rad-hard, bipolar complementary metal-oxide semiconductor (BiCMOS)/high-voltage process. The intent of this paper is to demonstrate that the PIC chip is fabricated with a radiation-hardened process and to demonstrate that various analog, digital, and power functions can be effectively integrated. C1 AT&T BELL LABS,ALLENTOWN,PA 18103. AT&T BELL LABS,WHIPPANY,NJ 07981. AT&T BELL LABS,READING,PA 19603. RP Titus, JL (reprint author), USN,CTR SURFACE WARFARE,CRANE,IN 47522, USA. NR 4 TC 1 Z9 2 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 0018-9499 J9 IEEE T NUCL SCI JI IEEE Trans. Nucl. Sci. PD DEC PY 1995 VL 42 IS 6 BP 2143 EP 2149 DI 10.1109/23.489265 PN 1 PG 7 WC Engineering, Electrical & Electronic; Nuclear Science & Technology SC Engineering; Nuclear Science & Technology GA TN390 UT WOS:A1995TN39000083 ER PT J AU RADULOVIC, S HIGGINS, JA JAWORSKI, DC DASCH, GA AZAD, AF AF RADULOVIC, S HIGGINS, JA JAWORSKI, DC DASCH, GA AZAD, AF TI ISOLATION, CULTIVATION, AND PARTIAL CHARACTERIZATION OF THE ELB AGENT ASSOCIATED WITH CAT FLEAS SO INFECTION AND IMMUNITY LA English DT Article ID SPOTTED-FEVER GROUP; LOS-ANGELES COUNTY; RICKETTSIAE; TYPHUS; IDENTIFICATION; POLYMORPHISM; OPOSSUMS AB ELB rickettsiae from cat flea homogenates were recovered in tissue culture cells following sequential passage through laboratory rats and the yolk sacs of embryonated chicken eggs. Seven days after inoculation of ELB from the infected yolk sacs, Vero cells and L999 cells were observed to contain intracellular bacteria as demonstrated by Diff Quik and indirect immunofluorescence assay staining, The rickettsial and ELB identity of the cultured agent was confirmed by PCR detection of the 16S rRNA and citrate synthase genes and PCR-restriction fragment Length polymorphism analysis of the 17-kDa conserved rickettsial antigen gene. The ELB rickettsiae induced plaques in Vero cells on day 11 postinfection, Rat anti-ELB serum reacted at 1:4,096 to cultured ELB and had lower reactivity to Rickettsia typhi Wilmington (1:1,024), Rickettsia akari Kaplan (1:512), and Rickettsia australis JC (1:64). Spotted fever group polyclonal sera also exhibited lower reactivity to ELB than to the homologous antigen. Coomassie blue-stained sodium dodecyl sulfate-polyacrylamide gel electrophoresis profiles of the ELB isolate and two R. typhi strains were identical. C1 UNIV BALTIMORE, SCH MED, DEPT MICROBIOL & IMMUNOL, BALTIMORE, MD 21201 USA. USN, MED RES INST, VIRAL & RICKETTSIAL DIS PROGRAM, BETHESDA, MD 20814 USA. FU NIAID NIH HHS [AI 17828] NR 22 TC 37 Z9 37 U1 1 U2 4 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0019-9567 EI 1098-5522 J9 INFECT IMMUN JI Infect. Immun. PD DEC PY 1995 VL 63 IS 12 BP 4826 EP 4829 PG 4 WC Immunology; Infectious Diseases SC Immunology; Infectious Diseases GA TF967 UT WOS:A1995TF96700038 PM 7591142 ER PT J AU Perkins, J Adachi, K Yamashita, T AF Perkins, J Adachi, K Yamashita, T TI Lattice transitions and flickering images in aged Cu-Mn alloys SO JOURNAL DE PHYSIQUE IV LA English DT Article; Proceedings Paper CT International Conference on Martensitic Transformation (ICOMAT 95) CY AUG 20-25, 1995 CL LAUSANNE, SWITZERLAND SP Swiss Acad Sci, SANW, Swiss Acad Engn Sci, SATW, Swiss Natl Sci Fdn, Swiss Fed Inst Technol Lausanne, Ecole Polytech Fed Lausanne, Canton Vaud, Ville Lausanne, AMT, Adv Mat & Technol, Agfa Gevaert AG, Switzerland, Furukawa Elect Co, Japan, Leica Microscopy & Sci Instruments Grp, Switzerland, Microfil Ind SA, Switzerland, Raychem, Med Div, USA, Scandinavian Mem Met, Sweden, Shape Mem Applicat Inc, USA, Steiger SA, Switzerland, Swiss Bank Corp, Shape Mem & Superelast Technol Comm, USA, Thomas Bolton Ltd, G B, TiNi Alloy, Co, USA AB Distinctive ''flickering'' movements are observed in TEM images of the microstructure of Cu-Mn alloys after aging within the miscibility gap. Analyses of two-beam image extinction and electron diffraction streaks indicate that the underlying tweed and ''V-shaped'' images involve a static displacement field of the type {110} <1 (1) over bar 0>. Atomic force microscopy and other microanalyses show the presence of Mn-enriched colonies of 15-40 nm, formed throughout the microstructure, in which twinned fct crystallites are induced and confined. The flickering movements are interpreted as a direct manifestation of the fcc double right arrow fct transformation event and in particular of a rotation of the fct c-axis, these effects being caused by an inelastic interaction between <110><1 (1) over bar 0> phonons and the accelerated electrons of the incident TEM beam. C1 SUMITOMO MET MIN CO,CENT RES LAB,ICHIKAWA 272,JAPAN. USN,POSTGRAD SCH,MAT SCI GRP,MONTEREY,CA 93943. RP Perkins, J (reprint author), MONTEREY INST ADV STUDIES,POB 975,MONTEREY,CA 93942, USA. NR 15 TC 1 Z9 1 U1 0 U2 1 PU EDITIONS PHYSIQUE PI LES ULIS CEDEX PA Z I DE COURTABOEUF AVE 7 AV DU HOGGAR, BP 112, 91944 LES ULIS CEDEX, FRANCE SN 1155-4339 J9 J PHYS IV JI J. Phys. IV PD DEC PY 1995 VL 5 IS C8 BP 161 EP 166 DI 10.1051/jp4:1995820 PN 1 PG 6 WC Physics, Multidisciplinary SC Physics GA TY982 UT WOS:A1995TY98200021 ER PT J AU McHugh, JP Bedford, FC Leighton, R AF McHugh, JP Bedford, FC Leighton, R TI The limit of wave propagation on the free surface of a viscous fluid SO JOURNAL OF APPLIED MECHANICS-TRANSACTIONS OF THE ASME LA English DT Article C1 USN,RES LAB,LAB ADV SPACE SENSING,WASHINGTON,DC 20375. RP McHugh, JP (reprint author), UNIV NEW HAMPSHIRE,DEPT MECH ENGN,DURHAM,NH 03824, USA. NR 8 TC 0 Z9 0 U1 0 U2 0 PU ASME-AMER SOC MECHANICAL ENG PI NEW YORK PA 345 E 47TH ST, NEW YORK, NY 10017 SN 0021-8936 J9 J APPL MECH-T ASME JI J. Appl. Mech.-Trans. ASME PD DEC PY 1995 VL 62 IS 4 BP 899 EP 902 DI 10.1115/1.2896018 PG 4 WC Mechanics SC Mechanics GA TY067 UT WOS:A1995TY06700012 ER PT J AU MEHLMAN, G EDDY, CR DOUGLASS, SR AF MEHLMAN, G EDDY, CR DOUGLASS, SR TI CHARACTERIZATION OF ELECTRON-CYCLOTRON-RESONANCE PLASMAS BY VACUUM-ULTRAVIOLET SPECTROSCOPY SO JOURNAL OF APPLIED PHYSICS LA English DT Article AB We have recorded, in the energy range of similar to 4-11 eV, radiation from electron cyclotron resonance microwave plasmas generated when coupling microwave energy in a number of gases and gas mixtures appropriate for plasma deposition or etching. Molecular, atomic, and ionic emissions are observed in this range attesting to the major collisional processes (dissociation, excitation, and ionization) with hot electrons. The neutral atom temperature has been measured by standard spectroscopic techniques and found to be in the range of 0.1-0.3 eV, much lower than the electron temperature of the same plasmas. The main discharge parameters (i.e., gas pressure, flow rate, microwave power) have been varied to interpret their influence on the plasma radiation in terms of plasma parameters. C1 USN,RES LAB,WASHINGTON,DC 20375. NR 15 TC 2 Z9 2 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 1 PY 1995 VL 78 IS 11 BP 6421 EP 6426 DI 10.1063/1.360525 PG 6 WC Physics, Applied SC Physics GA TH851 UT WOS:A1995TH85100011 ER PT J AU GRISCOM, DL AF GRISCOM, DL TI GAMMA-RAY-INDUCED OPTICAL ATTENUATION IN GE-DOPED-SILICA FIBER IMAGE GUIDES SO JOURNAL OF APPLIED PHYSICS LA English DT Article ID RADIATION; ABSORPTION AB Optical attenuation in fiber optic image guides comprising germanium-doped-silica-core/ pure-silica-clad picture elements was investigated in the range 420-1100 nm during and after room-temperature Co-60 gamma irradiation. The induced absorption spectra of the picture elements were successfully fitted by linear combinations of three known defect bands in irradiated Ge-doped SiO2: the Ge(1) center, the GeX center, and the nonbridging oxygen hole center (peak positions of 4.4, 2.6, and 2.0 eV, respectively). Dose for dose, the relative strengths of these three bands differed greatly between two nominally identical image guide samples from the same manufacturer. Defect production kinetics were followed at four dose rates ranging from 1.1 to 180 Gy/h. These kinetics and the post-irradiation anneal behaviors are interpreted in terms of the previously reported tendency of the Ge(1) center to undergo a thermal conversion to GeX. The net effect on absorption at 550 nm is a dose-rate-independent linear growth up to similar to 1000 Gy(Si) followed by saturation, with essentially no post-irradiation thermal decay at 22 C. At 650 nm, the kinetics are similar except that there is an ''inverted'' dose-rate dependence (lower losses at higher dose rates) and a small post-irradiation increase in absorption with time at 22 C. Irrespective of dose rate, these image guides are unsuitable for use in multimeter lengths if there is a likelihood of a lifetime radiation exposure of similar to 100 Gy (worst sample) or similar to 1000 Gy (best sample). RP GRISCOM, DL (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 12 TC 22 Z9 22 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0021-8979 J9 J APPL PHYS JI J. Appl. Phys. PD DEC 1 PY 1995 VL 78 IS 11 BP 6696 EP 6704 DI 10.1063/1.360493 PG 9 WC Physics, Applied SC Physics GA TH851 UT WOS:A1995TH85100049 ER PT J AU HE, JK CHING, WM YARBOUGH, P WANG, H CARL, M AF HE, JK CHING, WM YARBOUGH, P WANG, H CARL, M TI PURIFICATION OF A BACULOVIRUS-EXPRESSED HEPATITIS-E VIRUS STRUCTURAL PROTEIN AND UTILITY IN AN ENZYME-LINKED-IMMUNOSORBENT-ASSAY SO JOURNAL OF CLINICAL MICROBIOLOGY LA English DT Article ID NON-B HEPATITIS; EPIDEMIC NON-A; MOLECULAR-CLONING; INSECT CELLS; HEV; IDENTIFICATION; XINJIANG; PRIMATES; CHINA; INDIA AB We report on the purification of the full-length structural protein encoded by open reading frame 2 (ORF-2) of hepatitis E virus. The ORF-2 protein, expressed in Sf9 cells by using a recombinant baculovirus vector system, was successfully purified to homogeneity. Gel electrophoresis of the purified ORF-2 protein showed a single polypeptide of 75 kDa by Coomassie blue staining and by Western blot (immunoblot) analysis. We demonstrated that the partially purified ORF-2 protein could be used successfully in a sensitive and specific enzyme-linked immunosorbent assay for the detection of antibodies to hepatitis E virus. C1 USN, MED CTR, DEPT INTERNAL MED, DIV INFECT DIS, SAN DIEGO, CA 92134 USA. USN, MED RES INST, VIRAL & RICKETTSIAL DIS PROGRAM, BETHESDA, MD USA. GENELABS INC, REDWOOD CITY, CA USA. NR 28 TC 5 Z9 5 U1 0 U2 3 PU AMER SOC MICROBIOLOGY PI WASHINGTON PA 1752 N ST NW, WASHINGTON, DC 20036-2904 USA SN 0095-1137 J9 J CLIN MICROBIOL JI J. Clin. Microbiol. PD DEC PY 1995 VL 33 IS 12 BP 3308 EP 3311 PG 4 WC Microbiology SC Microbiology GA TF015 UT WOS:A1995TF01500047 PM 8586723 ER PT J AU GARDELLA, JA HO, T WYNNE, KJ ZHUANG, HZ AF GARDELLA, JA HO, T WYNNE, KJ ZHUANG, HZ TI USING SOLUBILITY DIFFERENCE TO ACHIEVE SURFACE PHASE-SEPARATION IN DIMETHYLSILOXANE-UREA-URETHANE COPOLYMERS SO JOURNAL OF COLLOID AND INTERFACE SCIENCE LA English DT Note DE SURFACE PHASE SEPARATION; PDMS-PU COPOLYMER; SOLVENT EFFECT; SELECTIVE PRECIPITATION ID DIBLOCK COPOLYMERS AB Effects of the casting solvent on the surface compositions of a series of polydimethylsiloxane (PDMS)-urethane-urea copolymers were investigated. The solvent pair investigated was tetrahydrofuran (THF) and mineral spirits (MS). Factors that determine solubility of a copolymer in a mixture of THF and MS include the solvent composition and the ratio between the sizes of the soft and the hard segments. The effectiveness of using mixed solvent to enhance surface PDMS enrichment varies with the copolymer composition. The benefits are maximized when the average molecular weight of the PDMS segments is 10,000. (C) 1995 Academic Press, Inc. C1 USN,RES LAB,MAT CHEM BRANCH,WASHINGTON,DC 20375. GEORGE MASON UNIV,DEPT CHEM,FAIRFAX,VA 22030. OFF NAVAL RES,DIV PHYS SCI S&T,ARLINGTON,VA 22217. SUNY BUFFALO,DEPT CHEM,BUFFALO,NY 14260. NR 10 TC 16 Z9 16 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9797 J9 J COLLOID INTERF SCI JI J. Colloid Interface Sci. PD DEC 1 PY 1995 VL 176 IS 1 BP 277 EP 279 PG 3 WC Chemistry, Physical SC Chemistry GA TF556 UT WOS:A1995TF55600033 ER PT J AU MCDONALD, BE ORRIS, GJ AF MCDONALD, BE ORRIS, GJ TI PERFORMANCE OF THE MATCHED-PHASE NOISE-FILTER WITH ESTIMATED NOISE SPECTRA SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID WAVE-BREAKING; SURFACE AB We demonstrate properties of a new type of noise filter, the matched-phase filter, for low signal-to-noise data. It requires that the shape of the noise amplitude spectrum be approximately known. The method assumes no a priori information about the phases of the noise spectrum, nor anything about the signal, except that its spectrum be uncorrelated with that of the noise. We demonstrate algorithm performance in cases where one's knowledge of the noise spectrum is and is not precise. We also demonstrate that when the shape of the noise spectrum is known exactly, the matched-phase filter can reveal signals at a signal-to-noise ratio (SNR) of less than -100 dB and increase the SNR to order 0 dB. (C) 1995 Academic Press, Inc. RP MCDONALD, BE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 6 TC 0 Z9 0 U1 0 U2 0 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD DEC PY 1995 VL 122 IS 2 BP 185 EP 190 DI 10.1006/jcph.1995.1207 PG 6 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA TK080 UT WOS:A1995TK08000001 ER PT J AU CYBYK, BZ ORAN, ES BORIS, JP ANDERSON, JD AF CYBYK, BZ ORAN, ES BORIS, JP ANDERSON, JD TI COMBINING THE MONOTONIC LAGRANGIAN GRID WITH A DIRECT SIMULATION MONTE-CARLO MODEL SO JOURNAL OF COMPUTATIONAL PHYSICS LA English DT Article ID DYNAMICS; ALGORITHM AB Using the monotonic Lagrangian grid (MLG) as a data structure in the direct simulation Monte Carte (DSMC) methodology produces an approach that automatically adjusts grid resolution to time-varying densities in the flow. The MLG algorithm is an algorithm for tracking and sorting moving particles, and it has a monotonic data structure for indexing and storing the physical attributes of the particles. The DSMC method is a direct particle simulation technique widely used in predicting rarefied flows of dilute gases. Monotonicity features of the MLG ensure that particles close in physical space are stored in adjacent array locations so that particle interactions may be restricted to a ''template'' of near neighbors. The MLG templates provide a time-varying grid network that automatically adapts to local number densities within the flowfield. Computational advantages and disadvantages of this new implementation are demonstrated by a series of test problems. (C) 1995 Academic Press, Inc. C1 USN,RES LAB,WASHINGTON,DC 20375. UNIV MARYLAND,COLLEGE PK,MD 20742. RP CYBYK, BZ (reprint author), WRIGHT LAB,WRIGHT PATTERSON AFB,OH 45433, USA. NR 23 TC 6 Z9 6 U1 1 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0021-9991 J9 J COMPUT PHYS JI J. Comput. Phys. PD DEC PY 1995 VL 122 IS 2 BP 323 EP 334 DI 10.1006/jcph.1995.1218 PG 12 WC Computer Science, Interdisciplinary Applications; Physics, Mathematical SC Computer Science; Physics GA TK080 UT WOS:A1995TK08000012 ER PT J AU Thompson, PE Kreifels, TL Gregg, M Hengehold, RL Yeo, YK Simons, DS Twigg, ME Fatemi, M Hobart, K AF Thompson, PE Kreifels, TL Gregg, M Hengehold, RL Yeo, YK Simons, DS Twigg, ME Fatemi, M Hobart, K TI The growth and characterization of Si1-xGex multiple quantum wells on Si(110) and Si(111) SO JOURNAL OF CRYSTAL GROWTH LA English DT Article; Proceedings Paper CT 6th International Symposium on Silicon Molecular Beam Epitaxy of the 1995 E-MRS Spring Conference CY MAY 22-26, 1995 CL STRASBOURG, FRANCE SP Council Europe, Commiss European Communities, E MRS ID MOLECULAR-BEAM EPITAXY; INTERSUBBAND ABSORPTION; SILICON AB Undoped and boron-doped multiple quantum well heterostructures composed of Si1-xGex have been grown on Si(110) and Si(111) substrates. Photoluminescence (PL), secondary ion mass spectrometry (SIMS), transmission electron microscopy, and X-ray diffraction have been used to characterize the structures. The structures with the highest quality, as defined by quantum confined FL, were grown at 710 degrees C, however SIMS revealed that substantial boron migration out of the wells occurred at this growth temperature. C1 USAF,INST TECHNOL,WRIGHT PATTERSON AFB,OH 45433. NATL INST STAND & TECHNOL,GAITHERSBURG,MD 20899. SFA INC,LANDOVER,MD 20785. RP Thompson, PE (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 16 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0248 J9 J CRYST GROWTH JI J. Cryst. Growth PD DEC PY 1995 VL 157 IS 1-4 BP 21 EP 26 DI 10.1016/0022-0248(95)00368-1 PG 6 WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied SC Crystallography; Materials Science; Physics GA TN785 UT WOS:A1995TN78500005 ER PT J AU Hobart, KD Kub, FJ Papanicoloau, NA Kruppa, W Thompson, PE AF Hobart, KD Kub, FJ Papanicoloau, NA Kruppa, W Thompson, PE TI Si/Si1-xGex heterojunction bipolar transistors for microwave power applications SO JOURNAL OF CRYSTAL GROWTH LA English DT Article; Proceedings Paper CT 6th International Symposium on Silicon Molecular Beam Epitaxy of the 1995 E-MRS Spring Conference CY MAY 22-26, 1995 CL STRASBOURG, FRANCE SP Council Europe, Commiss European Communities, E MRS AB Si/Si1-xGex heterojunction bipolar transistors are considered for microwave power applications. The devices are characterized for collector-base breakdown, small-signal microwave performance, and high-temperature characteristics. We find near-ideal collector-base breakdown voltages for double mesa transistors grown by MBE. Measured f(T) and f(max) were 10 and 25 GHz, respectively, for transistors with BVCBO of 40 V. Over a temperature range of 300-500 K the current gain shows a decrease of 34%. RP Hobart, KD (reprint author), USN,RES LAB,DIV ELECTR SCI & TECHNOL,WASHINGTON,DC 20375, USA. NR 11 TC 3 Z9 3 U1 0 U2 0 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0248 J9 J CRYST GROWTH JI J. Cryst. Growth PD DEC PY 1995 VL 157 IS 1-4 BP 215 EP 221 DI 10.1016/0022-0248(95)00388-6 PG 7 WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied SC Crystallography; Materials Science; Physics GA TN785 UT WOS:A1995TN78500041 ER PT J AU Hobart, KD Kub, FJ Gray, HF Twigg, ME Park, D Thompson, PE AF Hobart, KD Kub, FJ Gray, HF Twigg, ME Park, D Thompson, PE TI Growth of low-dimensional structures on nonplanar patterned substrates SO JOURNAL OF CRYSTAL GROWTH LA English DT Article; Proceedings Paper CT 6th International Symposium on Silicon Molecular Beam Epitaxy of the 1995 E-MRS Spring Conference CY MAY 22-26, 1995 CL STRASBOURG, FRANCE SP Council Europe, Commiss European Communities, E MRS ID SURFACES; SILICON; EPITAXY; SI AB Si growth by molecular beam epitaxy on nonplanar patterned Si substrates is studied as a function of growth parameters. The substrates consist of a truncated pyramid template with {111} sides and (100) tops formed by anisotropic etching of Si(100). For growth temperatures less than or equal to 550 degrees C no qualitative changes in the morphology of the template are observed. At growth temperatures between 650-700 degrees C {131} facets begin to form on the (100) surface and reduce the lateral dimensions of the (100) facet to < 20 nm. At high temperatures (similar to 800 degrees C) {113} facets remain stable and {111} facets no longer exist. The small (100) mesa formed at medium temperatures by facet reduction is exploited through the growth of Si/Si1-xGex multiple quantum wells leading to low-dimensional structures, Observations are quantified by scanning electron and transmission electron microscopies. C1 USN,RES LAB,DIV ELECTR SCI & TECHNOL,WASHINGTON,DC 20375. NR 14 TC 3 Z9 3 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-0248 J9 J CRYST GROWTH JI J. Cryst. Growth PD DEC PY 1995 VL 157 IS 1-4 BP 338 EP 343 DI 10.1016/0022-0248(95)00353-3 PG 6 WC Crystallography; Materials Science, Multidisciplinary; Physics, Applied SC Crystallography; Materials Science; Physics GA TN785 UT WOS:A1995TN78500064 ER PT J AU BALACHANDRAN, U MCGINN, PJ GUBSER, DU AF BALACHANDRAN, U MCGINN, PJ GUBSER, DU TI HIGH-TEMPERATURE SUPERCONDUCTORS - FOREWORD SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Editorial Material C1 UNIV NOTRE DAME,NOTRE DAME,IN 46556. USN,RES LAB,WASHINGTON,DC 20375. RP BALACHANDRAN, U (reprint author), ARGONNE NATL LAB,9700 S CASS AVE,ARGONNE,IL 60439, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD DEC PY 1995 VL 24 IS 12 BP 1765 EP 1765 PG 1 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA TJ647 UT WOS:A1995TJ64700001 ER PT J AU GUBSER, DU AF GUBSER, DU TI SUPERCONDUCTING COIL DEVELOPMENT AND MOTOR DEMONSTRATION - OVERVIEW SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT Symposium on Synthesis, Processing, and Large-Scale Applications of High-Temperature Superconductors, at the 124th Minerals, Metals, and Materials-Society Annual Meeting CY FEB 12-16, 1995 CL LAS VEGAS, NV SP Minerals Met & Mat Soc DE NAVY MOTOR; PROTOTYPE MAGNETS; WIRES AB Superconducting bismuth-cuprate wires, coils, and magnets are being produced by industry as part of a program to test the viability of using such magnets in Naval systems. Tests of prototype magnets, coils, and wires reveal progress in commercially produced products. The larger magnets will be installed in an existing superconducting homopolar motor and operated initially at 4.2K to test the performance. It is anticipated that approximately 400 Hp will be achieved by the motor. This article reports on the initial tests of the magnets, coils, and wires as well as the development program to improve their performance. RP GUBSER, DU (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 0 TC 1 Z9 1 U1 0 U2 1 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD DEC PY 1995 VL 24 IS 12 BP 1843 EP 1850 DI 10.1007/BF02652995 PG 8 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA TJ647 UT WOS:A1995TJ64700017 ER PT J AU OSOFSKY, MS LECHTER, WL TOTH, LE SKELTON, EF DREWS, AR KIM, CC DAS, B QADRI, SB WEBB, AW SOULEN, RJ AF OSOFSKY, MS LECHTER, WL TOTH, LE SKELTON, EF DREWS, AR KIM, CC DAS, B QADRI, SB WEBB, AW SOULEN, RJ TI SUPERCONDUCTIVITY ABOVE 100K IN COMPOUNDS CONTAINING HG SO JOURNAL OF ELECTRONIC MATERIALS LA English DT Article; Proceedings Paper CT Symposium on Synthesis, Processing, and Large-Scale Applications of High-Temperature Superconductors, at the 124th Minerals, Metals, and Materials-Society Annual Meeting CY FEB 12-16, 1995 CL LAS VEGAS, NV SP Minerals Met & Mat Soc DE HG-BASED SUPERCONDUCTOR HIGH PRESSURE PRESSING; MAGNETIC MOMENT ID HIGH-TEMPERATURE SUPERCONDUCTORS; BULK SUPERCONDUCTIVITY; CUPRATE; SYSTEM; OXIDES; COLOR AB Several members of a new family of (Hg,Tl)(Ba,Sr)CaCuO high temperature superconductors have been synthesized. These compounds, which are analogs to the Hg-Ba-Ca- and Tl-Ba-Ca-layered cuprates, are multi-phased and have superconducting transition temperatures above 100K. Several samples with a nominal composition of HgTl2Ba4Ca4Cu6Oy had Ta near 130K. Details of the characterization of these samples are presented. RP OSOFSKY, MS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. RI Osofsky, Michael/A-1050-2010 NR 16 TC 0 Z9 0 U1 0 U2 2 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 0361-5235 J9 J ELECTRON MATER JI J. Electron. Mater. PD DEC PY 1995 VL 24 IS 12 BP 1977 EP 1980 DI 10.1007/BF02653020 PG 4 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Applied SC Engineering; Materials Science; Physics GA TJ647 UT WOS:A1995TJ64700042 ER PT J AU Mukutmoni, D Joshi, YK Kelleher, MD AF Mukutmoni, D. Joshi, Y. K. Kelleher, M. D. TI Computations for a Three-by-Three Array of Protrusions Cooled by Liquid Immersion: Effect of Substrate Thermal Conductivity SO JOURNAL OF ELECTRONIC PACKAGING LA English DT Article AB A computational study of natural convection in an enclosure as applied to applications in cooling of electronic components is reported. The investigation is for a configuration consisting of a three by three array of heated protrusions placed on a vertical substrate. The vertical sidewalls are all insulated, and the top and bottom walls serve as isothermal heat sinks. A thin layer at the back of each protrusion is the heat source, where heat is generated uniformly and volumetrically. The coolant is the flourinert liquid FC75. The code was first validated with experimental results reported earlier on the same configuration. The effect of the substrate conductivity, kappa(s) on the heat transfer and fluid flow was then studied for power levels of 0.1 and 0.7 Watts per protrusion. The computations indicate that the effect of increasing kappa(s) is dramatic. The protrusion temperatures which were found to be nominally steady, were substantially reduced. The percentage of generated power that is directly conducted to the substrate increased with an increase in kappa(s). The fluid velocity field, which was unsteady, was not significantly affected by changes in kappa(s). C1 [Mukutmoni, D.] ADAPCO Inc, Melville, NY 11747 USA. [Joshi, Y. K.] Univ Maryland, Dept Mech Engn, College Pk, MD 20742 USA. [Joshi, Y. K.] Univ Maryland, CALCE Elect Packaging Res Ctr, College Pk, MD 20742 USA. [Kelleher, M. D.] Naval Postgrad Sch, Dept Mech Engn, Monterey, CA 93943 USA. RP Mukutmoni, D (reprint author), Gen Motors Corp, Cadillac Luxury Car Div, M-S 485-303-807, Flint, MI 48557 USA. FU Naval Surface Warfare Center, Crane, IN through the SHARP FX The support from the Naval Surface Warfare Center, Crane, IN through the SHARP effort is gratefully acknowledged. This study was performed when all authors were at the Naval Postgraduate School. The computations were carried out on a Cray Y-MP/EL 4/ 1024 of the Naval Postgraduate School NR 9 TC 4 Z9 4 U1 0 U2 0 PU ASME PI NEW YORK PA TWO PARK AVE, NEW YORK, NY 10016-5990 USA SN 1043-7398 EI 1528-9044 J9 J ELECTRON PACKAGING JI J. Electron. Packag. PD DEC PY 1995 VL 117 IS 4 BP 294 EP 300 DI 10.1115/1.2792108 PG 7 WC Engineering, Electrical & Electronic; Engineering, Mechanical SC Engineering GA V41WY UT WOS:000209577500007 ER PT J AU HUEY, MW BRAMWELL, JD HUTTER, JW KRATOCHVIL, FJ AF HUEY, MW BRAMWELL, JD HUTTER, JW KRATOCHVIL, FJ TI CENTRAL ODONTOGENIC FIBROMA MIMICKING A LESION OF ENDODONTIC ORIGIN SO JOURNAL OF ENDODONTICS LA English DT Note AB The central odontogenic fibroma is a rarely reported lesion that can be associated with vital teeth. Although it is uncommon and unlikely to recur after enucleation, the central odontogenic fibroma should be considered in a differential diagnosis of radiolucencies associated with vital teeth. This case report presents the radiographic and clinical signs of a central odontogenic fibroma occurring in the maxillary anterior region. C1 NNDC,NAVAL DENT SCH,DEPT ENDODONT,BETHESDA,MD 20889. USN,CTR DENT,BREMERTON,WA. USN,SCH DENT,ADV SPECIALTY EDUC PROGRAM ENDODONT,BETHESDA,MD 20889. USN,SCH DENT,DEPT ORAL PATHOL,BETHESDA,MD 20889. NR 10 TC 3 Z9 3 U1 0 U2 0 PU WILLIAMS & WILKINS PI BALTIMORE PA 351 WEST CAMDEN ST, BALTIMORE, MD 21201-2436 SN 0099-2399 J9 J ENDODONT JI J. Endod. PD DEC PY 1995 VL 21 IS 12 BP 625 EP 627 DI 10.1016/S0099-2399(06)81117-9 PG 3 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TH217 UT WOS:A1995TH21700010 PM 8596086 ER PT J AU Renzi, PM Lee, CH AF Renzi, PM Lee, CH TI A comparative study of biological activities of lipoteichoic acid and lipopolysaccharide SO JOURNAL OF ENDOTOXIN RESEARCH LA English DT Article ID TUMOR-NECROSIS-FACTOR; ENDOTHELIAL-CELLS; HUMAN-MONOCYTES; SOLUBLE CD14; ESCHERICHIA-COLI; BINDING-PROTEIN; BACTERIA; ACTIVATION; INTERLEUKIN-1; ENDOTOXEMIA AB Lipoteichoic acids (LTAs) of Gram-positive bacteria and lipopolysaccharide (LPS) are structurally similar and share several biological activities, In this study, the capacity of LTAs for inducing the cell surface expression of adhesion molecules ICAM-1, VCAM-1, and ELAM-1 by HUVEC were investigated and compared to that of LPS, In the presence of serum, LTA from Staphylococcus aureus, Streptococcus sanguis, Streptococcus pyogenes and Streptococcus mutans dose-dependently stimulated adhesion molecule expression above control levels although they were 100-1000 times less potent than LPS, LTA from Streptococcus faecalis and Bacillus subtilis had no effects, Similar to LPS, the activity of the LTAs was dose-dependently inhibited by polymyxin B, whereas unlike LPS, LTA activity decreased in the presence of triethylamine. The LTAs also exhibited reactivity in the Limulus amebocyte lysate (LAL) assay correlating with their ability to induce ICAM-1 expression, However, their LAL reactivity was approximately 3-6 orders of magnitude less than that of LPS, Furthermore, LTA-stimulated ICAM-1 expression was serum-dependent and inhibited by anti-CD14 antibody, 63D3, Thus, LTA shares several properties with LPS including inhibition by polymyxin B, reactivity in the LAL assay, and stimulation of endothelial cells via a CD14-dependent mechanism, These results suggests a possible role for LTAs in the inflammatory response due to infections with Gram-positive bacteria. RP Renzi, PM (reprint author), USN,MED RES INST,SEPT SHOCK RES PROGRAM,CODE 062,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 37 TC 7 Z9 7 U1 0 U2 1 PU CHURCHILL LIVINGSTONE PI EDINBURGH PA JOURNAL PRODUCTION DEPT, ROBERT STEVENSON HOUSE, 1-3 BAXTERS PLACE, LEITH WALK, EDINBURGH, MIDLOTHIAN, SCOTLAND EH1 3AF SN 0968-0519 J9 J ENDOTOXIN RES JI J. Endoxtin Res. PD DEC PY 1995 VL 2 IS 6 BP 431 EP 441 PG 11 WC Biochemistry & Molecular Biology; Immunology; Medicine, Research & Experimental; Microbiology SC Biochemistry & Molecular Biology; Immunology; Research & Experimental Medicine; Microbiology GA TP938 UT WOS:A1995TP93800006 ER PT J AU DAHLBURG, RB KARPEN, JT AF DAHLBURG, RB KARPEN, JT TI A TRIPLE CURRENT SHEET MODEL FOR ADJOINING CORONAL HELMET STREAMERS SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID SOLAR-WIND; INSTABILITY AB The highly structured magnetic field and plasma properties observed in the heliospheric extension of the coronal streamer belt have been interpreted as evidence for multiple current sheets originating at coronal helmet streamers. We explore the linear stability of a simple case: a triple current sheet: as would exist above two neighboring helmets of the same polarity. The behavior of the triple current sheet when perturbed by small disturbances can be described (in the incompressible limit) by MHD Orr-Sommerfeld and Squire equations, which we solve with a Chebyshev-tau method. We show the velocity and magnetic fields which characterize the three unstable modes and describe the modal dependence on fieldwise wavenumber and current sheet separation, At long wavelengths an unexpected phenomenon occurs: two modes degenerate into unstable traveling modes, We also explore the three-dimensional behavior and the modal variation with both large and small values of the resistivity and viscosity, We conclude that the magnetic topology in closely packed streamers is susceptible to instabilities with growth times of the order of hours. Our predictions indicate that the resultant plasmoid structures should be observable with the large angle and spectrometric coronagraph (LASCO) and ultraviolet coronagraph spectrometer (UVCS) instruments on the upcoming Solar and Heliospheric Observatory (SOHO) mission. C1 USN,RES LAB,EO HULBERT CTR SPACE RES,WASHINGTON,DC 20375. RP DAHLBURG, RB (reprint author), USN,RES LAB,COMPUTAT PHYS & FLUID DYNAM LAB,WASHINGTON,DC 20375, USA. RI Karpen, Judith/E-1484-2012 NR 28 TC 31 Z9 32 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 DEC 1 PY 1995 VL 100 IS A12 BP 23489 EP 23497 DI 10.1029/95JA02496 PG 9 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TH672 UT WOS:A1995TH67200010 ER PT J AU BERNHARDT, PA GANGULI, G KELLEY, MC SWARTZ, WE AF BERNHARDT, PA GANGULI, G KELLEY, MC SWARTZ, WE TI ENHANCED RADAR BACKSCATTER FROM SPACE-SHUTTLE EXHAUST IN THE IONOSPHERE SO JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS LA English DT Article ID CHARGED DUST PARTICLES; AURORAL IONOSPHERE; ACOUSTIC-WAVES; PLASMA; SCATTERING; INSTABILITIES; MESOSPHERE; TURBULENCE; SYSTEM; FIELD AB Enhancements in the backscatter from the 430-MHz radar at Arecibo were recorded during the Spacelab 2 mission when the space shuttle orbital maneuver system (OMS) engines were fired in the ionosphere. The modifications in the backscatter could have been the result of (1) compression of the electrons to produce higher densities, (2) generation of ion acoustic waves, (3) variations in the electron to ion temperature ratio, (4) enhanced scatter cross section by charging of ice particles in the exhaust, or (5) excitation of dust acoustic waves. Rapid cooling and condensation of the exhaust are important in determining the scattering properties of the modified ionosphere. A dusty plasma is formed when electrons are attached to ice particles in the exhaust plume. The calculated neutral temperature inside the exhaust plume is 120 K. Charge exchange between ambient O+ and the cold exhaust molecules yields low-temperature ion beams that excite weakly damped, ion acoustic waves. The enhanced radar echoes are probably the result of scatter from these waves, but the effects of the dusty plasma may be important. During future experiments, the space shuttle will fire the OMS engines over radars located at Arecibo, Puerto Rico; Jicarmarca, Peru; or Kwajalein, Marshall Islands. Measurements of the spectra from these radars will provide the means to distinguish between the various backscatter processes. C1 CORNELL UNIV,SCH ELECT ENGN,ITHACA,NY 14853. RP BERNHARDT, PA (reprint author), USN,RES LAB,DIV PLASMA PHYS,BEAM PHYS BRANCH,CODE 6794,4555 OVERLOOK AVE SW,WASHINGTON,DC 20375, USA. NR 51 TC 36 Z9 36 U1 0 U2 2 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 DEC 1 PY 1995 VL 100 IS A12 BP 23811 EP 23818 DI 10.1029/95JA02836 PG 8 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TH672 UT WOS:A1995TH67200040 ER PT J AU MASCOLA, JR MCNEIL, JG AF MASCOLA, JR MCNEIL, JG TI HUMAN-IMMUNODEFICIENCY-VIRUS TYPE-1 CANDIDATE VACCINE BREAKTHROUGH INFECTION SO JOURNAL OF INFECTIOUS DISEASES LA English DT Letter C1 USN,MED RES INST,DEPT INFECT DIS,BETHESDA,MD. RP MASCOLA, JR (reprint author), WALTER REED ARMY INST RES,DIV RETROVIROL,1600 E GUDE DR,ROCKVILLE,MD 20850, USA. NR 8 TC 1 Z9 1 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0022-1899 J9 J INFECT DIS JI J. Infect. Dis. PD DEC PY 1995 VL 172 IS 6 BP 1636 EP 1637 PG 2 WC Immunology; Infectious Diseases; Microbiology SC Immunology; Infectious Diseases; Microbiology GA TF776 UT WOS:A1995TF77600040 PM 7594736 ER PT J AU BRENNAN, T AF BRENNAN, T TI A HISTORY OF FOOD - TOUSSAINTSAMAT,M SO JOURNAL OF INTERDISCIPLINARY HISTORY LA English DT Book Review RP BRENNAN, T (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 3 TC 0 Z9 0 U1 0 U2 1 PU MIT PRESS PI CAMBRIDGE PA 55 HAYWARD ST JOURNALS DEPT, CAMBRIDGE, MA 02142 SN 0022-1953 J9 J INTERDISCIPL HIST JI J. Interdiscip. Hist. PD WIN PY 1995 VL 25 IS 3 BP 459 EP 461 DI 10.2307/205700 PG 3 WC History SC History GA PZ508 UT WOS:A1995PZ50800012 ER PT J AU Liberman, MA Phillips, EH Carroll, B Fallas, M Rosenthal, R AF Liberman, MA Phillips, EH Carroll, B Fallas, M Rosenthal, R TI Management of choledocholithiasis during pregnancy: A new protocol in the laparoscopic era SO JOURNAL OF LAPAROENDOSCOPIC SURGERY LA English DT Article ID GALLSTONE DISEASE; CHOLECYSTECTOMY; PANCREATITIS AB The management of symptomatic cholelithiasis during pregnancy remains a serious and difficult problem. This condition may be further complicated by the presence of common bile duct stones (CBDS). Two cases of CBDS in pregnancy are presented. During the period from August 1990 to June 1994, 1127 consecutive patients underwent LC by a single surgical team. Two (0.2%) of these patients were pregnant and both were found to have choledocholithiasis. One patient's stones were lavaged into the duodenum via the cystic duct and the other patient had transcystic choledochoscopy and transcystic duct tube drainage. The patients were discharged from the hospital on postoperative days 4 and 6, respectively. There were no complications and both successfully carried their pregnancies to term. Laparoscopic cholecystectomy (LC) with transcystic common bile duct exploration (TCDE) was advantageous in both patients. Neither patient required an abdominal incision or choledochotomy. Laparoscopic TCDE with or without cystic tube drainage is a viable option in the management of CBDS in the pregnant patient. C1 UNIFORMED SERV UNIV HLTH SCI,DEPT SURG,SAN DIEGO,CA 92134. CEDARS SINAI MED CTR,DIV ENDOSCOP SURG,LOS ANGELES,CA 90048. CEDARS SINAI MED CTR,DEPT GEN SURG,LOS ANGELES,CA 90048. RP Liberman, MA (reprint author), USN MED CTR,DEPT SURG,SAN DIEGO,CA 92134, USA. RI wong, jun/M-7851-2013 NR 28 TC 9 Z9 9 U1 0 U2 0 PU MARY ANN LIEBERT INC PUBL PI LARCHMONT PA 2 MADISON AVENUE, LARCHMONT, NY 10538 SN 1052-3901 J9 J LAPAROENDOSC SURG JI J. Laparoendosc. Surg. PD DEC PY 1995 VL 5 IS 6 BP 399 EP 403 DI 10.1089/lps.1995.5.399 PG 5 WC Surgery SC Surgery GA TL958 UT WOS:A1995TL95800009 PM 8746993 ER PT J AU Greenblatt, AS Bulmer, CH Moeller, RP Burns, WK AF Greenblatt, AS Bulmer, CH Moeller, RP Burns, WK TI Thermal stability of bias point of packaged linear modulators in lithium niobate SO JOURNAL OF LIGHTWAVE TECHNOLOGY LA English DT Article ID DEVICES AB The thermal stability of the bias point of packaged, passively biased, X-cut LiNbO3 interferometric modulators is described, Absolute stability is assessed and a comparison is made of stability before and after laser ablation adjustment used to tune the bias point to linear operation (90 degrees phase angle). Ablation is shown to be successful in setting the bias angle to +/-1 degrees of the desired value. The angle remained stable to a total variation of <5 degrees over -25-+42 degrees C both before and after ablation. All the observed angular changes with temperature were in the range 0.02-0.09 deg/degrees C. The effect of humidity in the package on modulator stability is characterized and then minimized for the actual devices. RP Greenblatt, AS (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 8 TC 10 Z9 10 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 0733-8724 J9 J LIGHTWAVE TECHNOL JI J. Lightwave Technol. PD DEC PY 1995 VL 13 IS 12 BP 2314 EP 2319 DI 10.1109/50.475569 PG 6 WC Engineering, Electrical & Electronic; Optics; Telecommunications SC Engineering; Optics; Telecommunications GA TL537 UT WOS:A1995TL53700003 ER PT J AU Coehoorn, R Fert, A Prinz, GA AF Coehoorn, R Fert, A Prinz, GA TI Spin polarized electron transport - Selected papers from the International Workshop, 19-22 February 1995, Miami, Florida - Preface SO JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS LA English DT Editorial Material C1 UNIV PARIS 11,F-91405 ORSAY,FRANCE. USN,RES LAB,WASHINGTON,DC 20375. RP Coehoorn, R (reprint author), PHILIPS RES LABS,POB 80000,EINDHOVEN,NETHERLANDS. NR 0 TC 1 Z9 1 U1 0 U2 3 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0304-8853 J9 J MAGN MAGN MATER JI J. Magn. Magn. Mater. PD DEC PY 1995 VL 151 IS 3 BP R3 EP R3 DI 10.1016/0304-8853(96)80002-3 PG 1 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA TN461 UT WOS:A1995TN46100001 ER PT J AU Lambrakos, SG Milewski, J AF Lambrakos, SG Milewski, J TI Analysis and refinement of a method for numerically modeling deep-penetration welding processes using geometric constraints SO JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE LA English DT Article DE deep-penetration; geometric constraints; numerical modeling AB A detailed analysis and refinement of a method of numerically modeling deep-penetration welding processes using geometric constraints based on boundary information obtained experimentally is presented. The general features of the numerical method have been described previously. This paper considers issues concerning accurate numerical calculation of temperature and velocity fields in regions of the melt pool where the flow of fluid is characterized by quasi-stationary Stokes flow. It is this region of the melt pool that is closest to the heat-affected zone and that represents a significant fraction of the fusion zone. C1 LOS ALAMOS NATL LAB,LOS ALAMOS,NM. RP Lambrakos, SG (reprint author), USN,RES LAB,DIV MAT SCI & TECHNOL,WASHINGTON,DC 20375, USA. NR 10 TC 5 Z9 5 U1 0 U2 0 PU ASM INTERNATIONAL PI MATERIALS PARK PA SUBSCRIPTIONS SPECIALIST CUSTOMER SERVICE, MATERIALS PARK, OH 44073-0002 SN 1059-9495 J9 J MATER ENG PERFORM JI J. Mater. Eng. Perform. PD DEC PY 1995 VL 4 IS 6 BP 717 EP 729 DI 10.1007/BF02646448 PG 13 WC Materials Science, Multidisciplinary SC Materials Science GA TL960 UT WOS:A1995TL96000009 ER PT J AU GREAVES, GN NGAI, KL AF GREAVES, GN NGAI, KL TI RELATING THE ATOMIC-STRUCTURE OF ALUMINOSILICATE GLASSES TO THEIR IONIC TRANSPORT-PROPERTIES SO JOURNAL OF NON-CRYSTALLINE SOLIDS LA English DT Article ID MIXED ALKALI GLASSES AB Experimental structural evidence for the microsegregation of alkali ions from network formers in alumine-silicate glasses is considered in relation to their ionic transport properties. Simple expressions for the activation enthalpies for diffusivity and electrical conductivity, that can be parameterised from the results of local structure spectroscopies, are introduced. Particular consideration is given to the effect on transport properties of replacing silica with alumina and of exchanging one alkali by another in mixed alkali alumine-silicate glasses. C1 USN, RES LAB, WASHINGTON, DC 20375 USA. RP GREAVES, GN (reprint author), DARESBURY LAB, CCLRC, WARRINGTON WA4 4AD, CHESHIRE, ENGLAND. NR 26 TC 11 Z9 11 U1 1 U2 4 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0022-3093 J9 J NON-CRYST SOLIDS JI J. Non-Cryst. Solids PD DEC PY 1995 VL 193 BP 405 EP 410 DI 10.1016/0022-3093(95)00382-7 PG 6 WC Materials Science, Ceramics; Materials Science, Multidisciplinary SC Materials Science GA TJ247 UT WOS:A1995TJ24700086 ER PT J AU Oyster, DK Parker, WB Gher, ME AF Oyster, DK Parker, WB Gher, ME TI CO2 lasers and temperature changes of titanium implants SO JOURNAL OF PERIODONTOLOGY LA English DT Article DE dental implants, endosseous; laser therapy; lasers; temperature; sterilization methods ID CARBON-DIOXIDE LASER; TISSUE DENTAL SURGERY; HEAT; CO2-LASER; BONE; STERILIZATION; SURFACE; RABBIT; INJURY; YAG AB LASERS MAY BE USEFUL IN UNCOVERING submerged implants or in removing contaminants from ''ailing'' implants, The purposes of this study were to record temperature changes at the bone-titanium implant interface when using a CO2 laser to: 1) uncover the implant at second stage surgery; and 2) ''decontaminate'' exposed implant threads. Scanning electron microscopy (SEM) was used to characterize surface changes of lased implants, both uncontaminated or contaminated with blood or saliva. In part one, 28 titanium implants, measuring 3.75 mm by 7 to 20 mm, were placed into room temperature, fresh, resected pig mandibles-and covered with a flap of gingiva, The overlying tissue was removed with a CO2 laser at different power levels. Bone-implant interface temperatures were measured with a thermocouple near the top of the implant, and 5 to 7 mm apical to the osseous crest. The effects of implant size, power level, tissue thickness, and operation time were evaluated. In part two, 5 mm by 4 mm bony dehiscences were created on 3 implants in one mandible and the exposed fixture threads lased at varying times and power levels. The results from part one showed temperature increases at the top thermocouple ranged from 4.2 to 16.8 degrees C and increases at the bottom thermocouple ranged from 2.0 to 11.5 degrees C. The results from part two showed temperature increases at the top thermocouple ranged from 1.2 to 11.7 degrees C and increases at the bottom thermocouple from 0.0 to 5.0 degrees C. If baseline ambient temperatures are 37 degrees C, then the temperature at the bone-implant interface might exceed 50 degrees C. SEM revealed no gross surface changes in lased uncontaminated implants, but laser treatment alone of contaminated implants failed to completely remove saliva or blood. Further study is needed regarding temperature increases and surface changes induced by lasers that may adversely affect osseointegration. C1 USN,NAVAL DENT CTR,DEPT PERIODONT,SAN DIEGO,CA 92152. RP Oyster, DK (reprint author), USN,NATL NAVAL DENT CTR,SCH DENT,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 45 TC 56 Z9 57 U1 0 U2 1 PU AMER ACAD PERIODONTOLOGY PI CHICAGO PA 737 NORTH MICHIGAN AVENUE, SUITE 800, CHICAGO, IL 60611-2690 SN 0022-3492 J9 J PERIODONTOL JI J. Periodont. PD DEC PY 1995 VL 66 IS 12 BP 1017 EP 1024 PG 8 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TL787 UT WOS:A1995TL78700001 PM 8683413 ER PT J AU Kresin, VZ Wolf, SA Adrian, SD Reeves, ME Ovchinnikov, YN AF Kresin, VZ Wolf, SA Adrian, SD Reeves, ME Ovchinnikov, YN TI Energy spectrum of high-T-c oxides: Two-gap structure, gaplessness, and implications SO JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS LA English DT Article; Proceedings Paper CT Conference on Spectroscopies in Novel Superconductors CY MAR 15-18, 1995 CL STANFORD UNIV, STANFORD SYNCHROTRON RADIAT LAB, STANFORD, CA SP Stanford Univ, Stanford Synchrotron Radiat Lab, Argonne Natl Lab, Los Alamos Natl Lab HO STANFORD UNIV, STANFORD SYNCHROTRON RADIAT LAB ID PRESSURE-DEPENDENCE; TEMPERATURE; STATE AB The energy spectrum of the cuprates depends on the level of doping. Deviation from stoichometry may introduce magnetic impurities, which, in turn, lead to a gapless scenario with peculiar optical, transport, magnetic and thermodynamic properties. C1 USN, RES LAB, WASHINGTON, DC 20375 USA. GEORGE WASHINGTON UNIV, WASHINGTON, DC 20052 USA. LD LANDAU THEORET PHYS INST, MOSCOW, RUSSIA. RP Kresin, VZ (reprint author), UNIV CALIF BERKELEY, LAWRENCE BERKELEY LAB, BERKELEY, CA 94720 USA. RI Wolf, Stuart/A-7513-2009 NR 29 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD OX5 1GB, ENGLAND SN 0022-3697 EI 1879-2553 J9 J PHYS CHEM SOLIDS JI J. Phys. Chem. Solids PD DEC PY 1995 VL 56 IS 12 BP 1623 EP 1626 DI 10.1016/0022-3697(95)00138-7 PG 4 WC Chemistry, Multidisciplinary; Physics, Condensed Matter SC Chemistry; Physics GA TL547 UT WOS:A1995TL54700011 ER PT J AU Byers, JM Flatte, ME AF Byers, JM Flatte, ME TI Two-protrusion STM on an anisotropic superconductor SO JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS LA English DT Article; Proceedings Paper CT Conference on Spectroscopies in Novel Superconductors CY MAR 15-18, 1995 CL STANFORD UNIV, STANFORD SYNCHROTRON RADIAT LAB, STANFORD, CA SP Stanford Univ, Stanford Synchrotron Radiat Lab, Argonne Natl Lab, Los Alamos Natl Lab HO STANFORD UNIV, STANFORD SYNCHROTRON RADIAT LAB DE scanning tunneling spectroscopy; high-temperature superconductivity AB The differential conductance of an STM with two atomically sharp protrusions separated by at least several atomic spacings depends on the electronic transport in the sample between those protrusions. This allows direct probing of any gap anisotropy experienced by propagating quasiparticles. C1 HARVARD UNIV,DIV APPL SCI,CAMBRIDGE,MA 02138. RP Byers, JM (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 4 TC 0 Z9 0 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0022-3697 J9 J PHYS CHEM SOLIDS JI J. Phys. Chem. Solids PD DEC PY 1995 VL 56 IS 12 BP 1701 EP 1702 DI 10.1016/0022-3697(95)00205-7 PG 2 WC Chemistry, Multidisciplinary; Physics, Condensed Matter SC Chemistry; Physics GA TL547 UT WOS:A1995TL54700029 ER PT J AU SON, DY KELLER, TM AF SON, DY KELLER, TM TI OXIDATIVELY STABLE CARBORANE-SILOXANE-DIACETYLENE COPOLYMERS SO JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY LA English DT Note DE CARBORANE; SILOXANE; DIACETYLENE; THERMOOXIDATIVE STABILITY ID POLYMERS; COMPOSITES C1 USN,RES LAB,MAT CHEM BRANCH,WASHINGTON,DC 20375. NR 14 TC 27 Z9 27 U1 2 U2 6 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0887-624X J9 J POLYM SCI POL CHEM JI J. Polym. Sci. Pol. Chem. PD DEC PY 1995 VL 33 IS 17 BP 2969 EP 2972 DI 10.1002/pola.1995.080331715 PG 4 WC Polymer Science SC Polymer Science GA TG028 UT WOS:A1995TG02800015 ER PT J AU MORANDO, G LEUPOLD, RJ MEIERS, JC AF MORANDO, G LEUPOLD, RJ MEIERS, JC TI MEASUREMENT OF HYDROSTATIC PRESSURES DURING SIMULATED POST CEMENTATION SO JOURNAL OF PROSTHETIC DENTISTRY LA English DT Article ID CROWNS AB Tooth sensitivity and fracture after cementation of posts for endodontically treated teeth have been a problem. This investigation developed an in vitro method of measuring intraradicular hydrostatic pressures created during simulated post cementation. The testing apparatus consisted of a pressure transducer and brush recorder connected to precision milled post spaces in a Plexiglas block, Cast post and cores were fabricated and cemented with three different luting agents: resinous cement, glass ionomer cement, and zinc phosphate cement, Mean hydrostatic pressures (psi) recorded during post cementation were zinc phosphate cement, 22.67; resinous cement, 19.77; and glass ionomer cement, 17.66, Zinc phosphate cement created substantially greater hydrostatic pressures than either the resinous or glass ionomer cements, This in vitro system was capable of discriminating intraradicular hydrostatic pressures among different classes of luting agents. C1 USN,SCH DENT,RES DEPT,BETHESDA,MD 20889. NR 14 TC 1 Z9 1 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0022-3913 J9 J PROSTHET DENT JI J. Prosthet. Dent. PD DEC PY 1995 VL 74 IS 6 BP 586 EP 590 DI 10.1016/S0022-3913(05)80309-9 PG 5 WC Dentistry, Oral Surgery & Medicine SC Dentistry, Oral Surgery & Medicine GA TJ881 UT WOS:A1995TJ88100005 PM 8778381 ER PT J AU Papoulias, FA Papadimitriou, HA AF Papoulias, FA Papadimitriou, HA TI Nonlinear studies of dynamic stability of submarines in the dive plane SO JOURNAL OF SHIP RESEARCH LA English DT Article AB The problem of dynamic stability of submersible vehicles in the dive plane is examined utilizing linear and nonlinear methods. Local bifurcations are studied with the means of perturbation and linearization techniques. The primary mechanism of loss of stability is identified in the form of generic Hopf bifurcations to periodic solutions. Stability of the resulting limit cycles is established using center manifold approximations and integral averaging. Particular emphasis is placed on analyzing the effects of the quadratic drag forces due to their crucial role on stability of periodic solutions. The methods described in this work could lead to techniques resulting in enlargement of the submerged operational envelope of a vehicle. RP Papoulias, FA (reprint author), USN,POSTGRAD SCH,DEPT MECH ENGN,MONTEREY,CA 93943, USA. NR 0 TC 3 Z9 5 U1 0 U2 0 PU SOC NAVAL ARCH MARINE ENG PI JERSEY CITY PA 601 PAVONIA AVENUE, JERSEY CITY, NJ 07306 SN 0022-4502 J9 J SHIP RES JI J. Ship Res. PD DEC PY 1995 VL 39 IS 4 BP 347 EP 356 PG 10 WC Engineering, Marine; Engineering, Civil SC Engineering GA TK543 UT WOS:A1995TK54300007 ER PT J AU Buguet, A Montmayeur, A Pigeau, R Naitoh, P AF Buguet, A Montmayeur, A Pigeau, R Naitoh, P TI Modafinil, d-amphetamine and placebo during 64 hours of sustained mental work .2. Effects on two nights of recovery sleep SO JOURNAL OF SLEEP RESEARCH LA English DT Article DE recovery sleep; sleep deprivation; wakefulness maintenance drugs ID ADRENERGIC AGONIST MODAFINIL; EARLY MORNING BEHAVIOR; DEPRIVATION; PATTERNS; PERFORMANCE; NARCOLEPSY; LENGTH; MOOD AB Polysomnograms were obtained from 37 volunteers, before (baseline) and after (two consecutive recovery nights) a 64-h sleep deprivation, with (d-amphetamine or modafinil) or without (placebo) alerting substances. The drugs were administered at 23.00 hours during the first sleep deprivation night (after 17.5 h of wakefulness), to determine whether decrements in cognitive performance would be prevented; at 05.30 hours during the second night of sleep deprivation (after 47.5 h of wakefulness), to see whether performance would be restored; and at 15.30 hours during the third day of continuous work, to study effects on recovery sleep. The second recovery night served to verify whether drug-induced sleep disturbances on the first recovery night would carry over to a second night of sleep. Recovery sleep for the placebo group was as expected: the debt in slow-wave sleep (SWS) and REM sleep was paid back during the first recovery night, the rebound in SWS occurring mainly during the first half of the night, and that of REM sleep being distributed evenly across REM sleep episodes. Recovery sleep for the amphetamine group was also consistent with previously published work: increased sleep latency and intrasleep wakefulness, decreased total sleep time and sleep efficiency, alterations in stage shifts, Stage 1, Stage 2 and SWS, and decreased REM sleep with a longer REM sleep latency. For this group, REM sleep rebound was observed only during the second recovery night. Results for the modafinil group exhibited decreased time in bed and sleep period time, suggesting a reduced requirement for recovery sleep than for the other two groups. This group showed fewer disturbances during the first recovery night than the amphetamine group. In particular, there was no REM sleep deficit, with longer REM sleep episodes and a shorter REM latency, and the REM sleep rebound was limited to the first REM sleep episode. The difference with the amphetamine group was also marked by less NREM sleep and Stage 2 and more SWS episodes. No REM sleep rebound occurred during the second recovery night, which barely differed from placebo. Hence, modafinil allowed for sleep to occur, displayed sleep patterns close to that of the placebo group, and decreased the need for a long recovery sleep usually taken to compensate for the lost sleep due to total sleep deprivation. C1 DEF & CIVIL INST ENVIRONM MED,DIV HUMAN FACTORS,N YORK,ON,CANADA. USN,HLTH RES CTR,SAN DIEGO,CA 92152. RP Buguet, A (reprint author), SERV SANTE ARMEES,CTR RECH,UNITE PHYSIOL VIGILANCE,BP 87,F-38702 LA TRONCHE,FRANCE. NR 55 TC 55 Z9 57 U1 1 U2 5 PU BLACKWELL SCIENCE LTD PI OXFORD PA OSNEY MEAD, OXFORD, OXON, ENGLAND OX2 0EL SN 0962-1105 J9 J SLEEP RES JI J. Sleep Res. PD DEC PY 1995 VL 4 IS 4 BP 229 EP 241 PG 13 WC Clinical Neurology; Neurosciences SC Neurosciences & Neurology GA TM744 UT WOS:A1995TM74400004 ER PT J AU Trent, LK ThiedingCancel, D AF Trent, LK ThiedingCancel, D TI Effects of chromium picolinate on body composition SO JOURNAL OF SPORTS MEDICINE AND PHYSICAL FITNESS LA English DT Article DE chromium; chromium-tripicolinate; obesity; trace elements; body composition; physical fitness; weight loss ID OBESITY; SUPPLEMENTS; WEIGHT; EXCRETION; INSULIN; DIETS AB Objective. This study explored the efficacy of chromium picolinate as a fat-reduction aid for obese individuals enrolled in a physical exercise program. Experimental design. The study employed a double-blind, placebo-controlled protocol and lasted for 16 weeks. Setting, The physical conditioning programs were conducted on Navy bases (gymnasium, athletic field, etc.) and met a minimum of three times per week for at least 30 minutes of aerobic exercise. Participants, Participants were healthy, active-duty Navy personnel (79 men, 16 women) who exceeded the Navy's percent body fat standards of 22% fat for men, 30% for women, Mean age was 30.3 years; racial distribution was 76% white, 16% black, and 8% other, Comparisons between the 95 study completers and the 109 dropouts revealed no significant differences in demographics or baseline percent body fat. Interventions. Bottles of capsules containing either 400 mu g chromium picolinate or a placebo were distributed to the designated individuals by their fitness program coordinator, Participants took one capsule per day and kept a log of their daily exercise activities, They also completed a pre-post questionnaire concerning their health and lifestyle habits, Measures, Primary outcome measures were percent body fat, body weight, and lean body mass, Percent body fat was computed from body circumference measurements and height, Analyses controlled for diet and exercise, Results, At the end of 16 weeks, the group as a whole had lost a small amount of weight and body fat, However, the chromium group failed to show a significantly greater reduction in either percent body fat or body weight, or a greater increase in lean body mass, than did the placebo group, Conclusions. It was concluded that chromium picolinate was ineffective in enhancing body fat reduction in this group and could not be recommended as an adjuvant to Navy weight-loss programs in general. C1 NEMOURS CHILDRENS CLIN,JACKSONVILLE,FL. RP Trent, LK (reprint author), USN,HLTH RES CTR,HLTH SCI & EPIDEMIOL DEPT,POB 85122,SAN DIEGO,CA 92186, USA. NR 32 TC 48 Z9 50 U1 0 U2 5 PU EDIZIONI MINERVA MEDICA PI TURIN PA CORSO BRAMANTE 83-85 INT JOURNALS DEPT., 10126 TURIN, ITALY SN 0022-4707 J9 J SPORT MED PHYS FIT JI J. Sports Med. Phys. Fit. PD DEC PY 1995 VL 35 IS 4 BP 273 EP 280 PG 8 WC Sport Sciences SC Sport Sciences GA UA868 UT WOS:A1995UA86800007 PM 8776075 ER PT J AU Singh, DJ Pickett, WE AF Singh, DJ Pickett, WE TI Unusual oxygen doping behavior in Hg cuprates and its pressure dependence SO JOURNAL OF SUPERCONDUCTIVITY LA English DT Article DE superconductor; oxygen doping; pressure effects; Hg cuprates ID 150-K AB Self-consistent electronic structure studies show that the ''extra'' oxygen in the O(4) site in Hg cuprates is unlike oxygen ions in other cuprates that have been studied: it is singly charged O1- rather than being near O2-. This behavior is necesary to make a consistent interpretation of the doping behavior by oxygen in Hg cuprates. We find that the change in doping level at 9.2 GPa in HgBa2Ca2Cu3O8+delta is far too small to account for the observed rise in T-c. We comment on strain effects on the electronic structure in YBa2Cu3O7. RP Singh, DJ (reprint author), USN,RES LAB,COMPLEX SYST THEORY BRANCH,WASHINGTON,DC 20375, USA. RI Singh, David/I-2416-2012 NR 10 TC 0 Z9 0 U1 0 U2 0 PU PLENUM PUBL CORP PI NEW YORK PA 233 SPRING ST, NEW YORK, NY 10013 SN 0896-1107 J9 J SUPERCOND JI J. Supercond. PD DEC PY 1995 VL 8 IS 6 BP 769 EP 771 DI 10.1007/BF00727502 PG 3 WC Physics, Applied; Physics, Condensed Matter SC Physics GA TP812 UT WOS:A1995TP81200012 ER PT J AU Feit, D AF Feit, D TI 15th International Congress on Acoustics SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Editorial Material RP Feit, D (reprint author), USN,CTR SURFACE WARFARE,DIV CARDEROCK,BETHESDA,MD, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD DEC PY 1995 VL 98 IS 6 BP 3014 EP 3015 DI 10.1121/1.413870 PG 2 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA TL335 UT WOS:A1995TL33500008 ER PT J AU Wilson, JH AF Wilson, JH TI Applications of inverse beamforming theory SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article ID FOURIER-SERIES METHOD AB The underlying theory for the significant (>10 dB) performance gains described in a companion paper [J. P. Fabre and J. H. Wilson, J. Acoust. Sec. Am. 98, 3262-3278 (1995)] using measured noise data from Outpost SUNRISE is developed in this paper. Recent theoretical papers [J. M. Wilson, J. Acoust. Sec. Am. 73, 1648-1556 (1983); A. Nuttal and J. H. Wilson, ibid. 90, 20042019 (1991)] on inverse beamforming (lBE) [patent on inverse beamforming obtained by J. Wilson, J. Donald, and A. Nuttall, NUWC, New London, CT (Patent No. NC73991)] have dealt only with the solutions to the inverse beamforming integral equation and the performance properties of the IBF solutions are described in this paper. IBF consists of three separate algorithms: a beamforming algorithm called the Fourier integral method (FIM), a data thresholding technique called the eight nearest-neighbor peak picker (ENNPP), and a three-dimensional ''M of N'' tracker. The properties of each algorithm are discussed and it is shown that IBF has a 3-dB array noise gain (ANG) advantage over conventional beamforming (IBF) under ideal conditions. This 3-dB ANG advantage is proven theoretically and illustrated with measured noise data from Outpost SUNRISE. The 3-dB ANG advantage leads to a minimum detectable level (MDL) advantage of over 10 dB for IBF as shown in a companion paper. The spikiest solution to the IBF integral equation is dervived using standard Backus-Gilbert inverse theory and this solution is identical to FIM at array design frequency. (C) Acoustical Society of America. RP Wilson, JH (reprint author), USN,POSTGRAD SCH,DEPT OCEANOG,MONTEREY,CA 93943, USA. NR 9 TC 13 Z9 22 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD DEC PY 1995 VL 98 IS 6 BP 3250 EP 3261 DI 10.1121/1.413814 PG 12 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA TL335 UT WOS:A1995TL33500035 ER PT J AU Schenck, HA Benthien, GW Barach, D AF Schenck, HA Benthien, GW Barach, D TI A hybrid method for predicting the complete scattering function from limited data SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article AB The three-dimensional acoustic scattering function of an object is very difficult and expensive to measure, even in controlled experiments. Usually one is limited to sampling this function at a limited number of monostatic angles and perhaps at a few bistatic angles in a single plane. However, the three-dimensional function is controlled by relatively few degrees of freedom at low frequencies. By using a computational model to generate the far-field propagator function for the object, and applying reciprocity conditions as a constraint, a least-squares problem can be formulated to estimate the radiating part of the surface source strength. Singular value decomposition of the propagator function is used to identify the efficient radiating modes. Once the surface source density is determined by solving the least-squares problem, the full three-dimensional scattering function can be reconstructed. The theoretical basis for this technique will be presented, along with a discussion of results obtained to date. Practical issues dealing with the numerical implementation and computational efficiency will also be discussed. (C) 1995 Acoustical Society of America. RP Schenck, HA (reprint author), USN,NAVAL COMMAND,CTR CONTROL & OCEAN SURVEILLANCE,DIV RDT&E,SAN DIEGO,CA 92152, USA. NR 7 TC 1 Z9 1 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD DEC PY 1995 VL 98 IS 6 BP 3469 EP 3481 DI 10.1121/1.413779 PG 13 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA TL335 UT WOS:A1995TL33500058 ER PT J AU Maidanik, G AF Maidanik, G TI Power dissipation in a sprung mass attached to a master structure SO JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA LA English DT Article AB It is shown that unlike the impedance at resonance, the power dissipation in the sprung mass appropriately approaches zero as the loss factor in this dynamic system approaches zero. Indeed, for an optimal dissipated power a finite loss factor in the sprung mass is required. It is also shown that the effective loss factor in the master structure in lieu of the power dissipated in the sprung mass is not usually at its maximum value when this dissipated power is optimal. A relevant question in designing sprung masses may thus be suggested: Should one design for maximization of this effective loss factor or opt for optimization, at least for maximization, of the dissipated power in the resonant sprung mass? The question is further compounded if the design is motivated not only by power dissipation options but also by options relating in part to the control of the response either in the master structure, in the sprung mass, or in both. (C) 1995 Acoustical Society of America. RP Maidanik, G (reprint author), NSWC,DAVID TAYLOR MODEL BASIN,BETHESDA,MD 20084, USA. NR 13 TC 11 Z9 11 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0001-4966 J9 J ACOUST SOC AM JI J. Acoust. Soc. Am. PD DEC PY 1995 VL 98 IS 6 BP 3527 EP 3533 DI 10.1121/1.414362 PG 7 WC Acoustics; Audiology & Speech-Language Pathology SC Acoustics; Audiology & Speech-Language Pathology GA TL335 UT WOS:A1995TL33500064 ER PT J AU Girgis, NI Tribble, DR Sultan, Y Farid, Z AF Girgis, NI Tribble, DR Sultan, Y Farid, Z TI Short course chemotherapy with cefixime in children with multidrug-resistant Salmonella typhi septicaemia SO JOURNAL OF TROPICAL PEDIATRICS LA English DT Article ID FEVER AB Increasing prevalence of multidrug-resistant (MDR) Salmonella typhi strains in pediatric cases of typhoid fever and chemotherapy restrictions in children, such as fluoroquinolones, require ongoing clinical evaluations of different antibiotic regimens. Previously reported clinical trials with oral cefixime therapy given as a 12-day regimen (20-30 mg/kg divided twice daily) demonstrated both safety and efficacy, An open trial was undertaken to investigate a short course (8-day) regimen of oral cefixime in an Egyptian public fever hospital, Eighty children were initially enrolled with blood culture confirmation in 60 children, Clinical cure was documented in 57 (95 per cent) with three children requiring a change in antibiotic regimen due to therapeutic failure and one child with culture-confirmed relapsed 21 days post-therapy. All S. typhi isolates were sensitive to cefixime as measured by dish diffusion. Cefixime was well-tolerated with only mild side-effects, including nausea/vomiting (8 per cent) and abdominal cramping with loose stools (6 per cent), which may have been secondary to typhoid fever. Cefixime given in a short 8-day course is safe and effective in the management of MDR typhoid fever in children. C1 USN,MED RES UNIT 3,CAIRO,EGYPT. ABBASSIA FEVER HOSP,CAIRO,EGYPT. NR 6 TC 11 Z9 11 U1 0 U2 0 PU OXFORD UNIV PRESS UNITED KINGDOM PI OXFORD PA WALTON ST JOURNALS DEPT, OXFORD, ENGLAND OX2 6DP SN 0142-6338 J9 J TROP PEDIATRICS JI J. Trop. Pediatr. PD DEC PY 1995 VL 41 IS 6 BP 364 EP 365 PG 2 WC Pediatrics; Tropical Medicine SC Pediatrics; Tropical Medicine GA TR133 UT WOS:A1995TR13300012 PM 8606446 ER PT J AU Fryauff, DJ Cope, SE Presley, SM Hanafi, HA Bailly, C SaidSalah, EA Abro, M Dabale, D AF Fryauff, DJ Cope, SE Presley, SM Hanafi, HA Bailly, C SaidSalah, EA Abro, M Dabale, D TI Sand flies of the Republic of Djibouti: Ecological distribution, seasonal population trends, and identification of species SO JOURNAL OF VECTOR ECOLOGY LA English DT Article DE Djibouti; sand fly; phlebotomus ID LEISHMANIASIS; SANDFLIES; VECTORS AB Country-wide surveys for sand fly vectors of Leishmania were conducted during 1988 and 1989 in the Republic of Djibouti. Standardized, consistent sampling by oiled paper traps was concentrated within ten towns and encampments in four distinct ecological/altitudinal zones (coastal plain, 0-100 m; inland plateau, 400-750 m; mountain valley, 1,000 m; highland forest, > 1,500 m) and timed during three seasonal periods (cool-dry, October-November; cool-moist, January-February; hot-dry, June-July). A total of 8,492 specimens, representing 19 species and subspecies was identified. Phlebotomus species with proven or potential ability to transmit Leishmania accounted for 22 percent (1,902/8,492) of the identified collection and comprised 15 to 39 percent of each seasonal sample. Phlebotomus alexandri and Phlebotomus bergeroti were among the most common and widely distributed species, and made up 62 and 36 percent, respectively, of the Phlebotomus collection. Phlebotomus sergenti and Phlebotomus orientalis were also found, hut at low numbers and from fewer locations. Seasonal densities were calculated, and a taxonomic key for the identification of the sand flies of Djibouti has been constructed. Survey results are compared with those of other countries in the region. The ecology, distribution, and public health importance of human-biting sand fly species found in Djibouti are discussed. C1 USN,MED RES UNIT 3,RES SCI DEPT,CAIRO,EGYPT. NR 48 TC 4 Z9 5 U1 2 U2 3 PU SOC VECTOR ECOLOGY PI SANTA ANA PA PO BOX 87, SANTA ANA, CA 92702 J9 J VECTOR ECOL JI J. Vector Ecol. PD DEC PY 1995 VL 20 IS 2 BP 168 EP 188 PG 21 WC Entomology SC Entomology GA TM945 UT WOS:A1995TM94500009 ER PT J AU Provenzano, V Holtz, RL AF Provenzano, V Holtz, RL TI Nanocomposites for high temperature applications SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Article; Proceedings Paper CT Symposium on Engineering of Nanostructured Materials CY NOV 28-30, 1994 CL BOSTON, MA SP USN, Off Naval Res, Nanophase Technol Corp DE high temperature applications; nanocomposites AB This paper reviews the research that has been conducted at the Naval Research Laboratory during the past few years on nanocomposites for high temperature applications. The research was inspired by a strengthening theory proposed by N.P. Louat (Acta. Metall., 33 (1985) 59). The theory sought to take advantage of the high strength and toughness of fine-grained metals while at the same time avoiding, through use of composites, the inherent thermal instability of these materials at high temperatures due to thermally activated processes such as creep, grain boundary sliding and grain coarsening. To test this idea, both microcomposites and nanocomposites were synthesized and processed at the Naval Research Laboratory by different techniques that included liquid infiltration, electroless plating, chemical vapor deposition fluidized-bed, inert gas condensation, and ball milling. In all cases, the composites consisted of a hard reinforcing phase embedded in a softer metal matrix phase in which both phases are nearly immiscible. For the case of copper-niobium and brass-niobium microcomposites, both strength enhancement and high temperature strength retention were demonstrated. For physical-vapor deposited copper-niobium nanocomposites, very large increases were observed in the microhardnesses with a peak in the microhardness values around 63 vol.% niobium. Suppression of grain growth at temperatures close to the melting point of copper were demonstrated, as well. Similar results were obtained for silver-nickel nanocomposites. Processing nanocomposite metals has proven to be plagued with two principal challenges:consolidation and oxidation. These two problems with nanostructured metals suggest alternative research directions designed to take advantage both of the strong reactivity and of the large grain boundary surfaces of the nanostructured materials. C1 GEOCENTERS INC,FT WASHINGTON,MD 20744. RP Provenzano, V (reprint author), USN,RES LAB,DIV MAT SCI & TECHNOL,PHYS MET BRANCH,CODE 6323,WASHINGTON,DC 20035, USA. NR 9 TC 30 Z9 39 U1 2 U2 13 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD DEC PY 1995 VL 204 IS 1-2 BP 125 EP 134 DI 10.1016/0921-5093(95)09948-4 PG 10 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TN895 UT WOS:A1995TN89500023 ER PT J AU Ying, JY Mayo, MJ Chiang, YM Kabacoff, LT AF Ying, JY Mayo, MJ Chiang, YM Kabacoff, LT TI Proceedings of the Symposium on Engineering of Nanostructured Materials - 28 November 2 December 1994, Boston, MA, USA - Preface SO MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING LA English DT Editorial Material C1 PENN STATE UNIV,UNIVERSITY PK,PA 16802. OFF NAVAL RES,ARLINGTON,VA 22217. RP Ying, JY (reprint author), MIT,77 MASSACHUSETTS AVE,CAMBRIDGE,MA 02139, USA. NR 0 TC 0 Z9 0 U1 0 U2 1 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5093 J9 MAT SCI ENG A-STRUCT JI Mater. Sci. Eng. A-Struct. Mater. Prop. Microstruct. Process. PD DEC PY 1995 VL 204 IS 1-2 BP R9 EP R9 DI 10.1016/0921-5093(96)80001-3 PG 1 WC Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Science & Technology - Other Topics; Materials Science; Metallurgy & Metallurgical Engineering GA TN895 UT WOS:A1995TN89500001 ER PT J AU Rajagopal, AK Buot, FA AF Rajagopal, AK Buot, FA TI Quantum transport and non-linear dynamics of interacting quantized fields and applications to nanoelectronics and optoelectronics SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT 1st International Conference on Low Dimensional Structures and Devices CY MAY 08-10, 1995 CL SINGAPORE, SINGAPORE DE theory of electron transport; quantum effects; non-linear effects; semiconductor devices AB A non-equilibrium dynamics of interacting quantized fields based on the Liouville space quantum field dynamics is outlined here. The self-consistent treatment of quantum transport given here expresses the theory in terms of renormalized propagators and renormalized many-body interactions. The quantum transport equation for the particle quantum distribution function is extracted from the general equation in real time for each particle species in a system consisting of several components. Although it is equivalent to the so-called non-equilibrium Green's function theory of Schwinger and Keldysh, it has several technical advantages. We suggest a method to implement numerically the self-consistent scheme by generalizing the many-body functional methods (e.g. the density functional techniques) in condensed matter physics to highly non-equilibrium situations. Several important problems in nanoelectronics and optoelectronics where this formalism is essential are mentioned. RP Rajagopal, AK (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 18 TC 0 Z9 0 U1 0 U2 0 PU ELSEVIER SCIENCE SA LAUSANNE PI LAUSANNE 1 PA PO BOX 564, 1001 LAUSANNE 1, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD DEC PY 1995 VL 35 IS 1-3 BP 51 EP 55 DI 10.1016/0921-5107(95)01400-4 PG 5 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA TM630 UT WOS:A1995TM63000011 ER PT J AU Buot, FA Rajagopal, AK AF Buot, FA Rajagopal, AK TI Theory of novel nonlinear quantum transport effects in resonant tunneling structures SO MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY LA English DT Article; Proceedings Paper CT 1st International Conference on Low Dimensional Structures and Devices CY MAY 08-10, 1995 CL SINGAPORE, SINGAPORE DE quantum effects; resonant tunnelling structures; theory of electron transport; quantum well ID INTRINSIC BISTABILITY; WIGNER-FUNCTION; DEVICES; OSCILLATIONS; DIODES; MODEL AB The study of time-dependent, highly nonlinear, and nonequilibrium quantum-based device operation has been accomplished through the use of the quantum distribution function (QDF) in phase space. There are four important controversial issues on resonant tunneling structures (RTS) that have been resolved, resulting from the QDF simulations. These are: (a) the characteristic plateau-like structure, the presence of autonomous intrinsic high-frequency oscillations, current bistability, and hysteresis of the current voltage (I-V) curve; (b) the high-frequency small signal response when the RTS, biased in the negative differential resistance region, operates in the stable mode, and the role of the electron inertia at very high frequencies; (c) the binary information storage at zero bias, without energy dissipation, and the accompanying 'anomalous' current bistability phenomena in quantum well diodes with special source and/or drain structures; (d) the hysteresis of trapped hole charge in the barrier region and accompanying current bistability before the onset of the resonant-tunneling current peak in quantum-well diodes with type II band-edge alignment. RP USN, RES LAB, WASHINGTON, DC 20375 USA. NR 47 TC 16 Z9 16 U1 0 U2 1 PU ELSEVIER SCIENCE SA PI LAUSANNE PA PO BOX 564, 1001 LAUSANNE, SWITZERLAND SN 0921-5107 J9 MAT SCI ENG B-SOLID JI Mater. Sci. Eng. B-Solid State Mater. Adv. Technol. PD DEC PY 1995 VL 35 IS 1-3 BP 303 EP 317 DI 10.1016/0921-5107(95)01378-4 PG 15 WC Materials Science, Multidisciplinary; Physics, Condensed Matter SC Materials Science; Physics GA TM630 UT WOS:A1995TM63000062 ER PT J AU Vasudevan, AK Sadananda, K AF Vasudevan, AK Sadananda, K TI Fatigue crack growth behavior of composites SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article; Proceedings Paper CT Symposium on the Creep and Fatigue of Metal Matrix Composites CY 1994 CL SAN FRANCISCO, CA SP TMS, SMD, ASM, MSD ID METAL MATRIX COMPOSITES; ALUMINUM-ALLOY COMPOSITES; STRESS INTENSITIES; CLOSURE; PROPAGATION; PARTICLES; FRACTURE AB Fatigue crack growth data of discontinuously reinforced composites published in the literature has been re-evaluated using the two-parametric approach developed by the authors. The use of these two parameters involves Delta K and K-max as the driving forces, which are required simultaneously for fatigue crack growth to occur. These two parameters are intrinsic to fatigue deformation process. The first parameter is related to the degree of cyclic plasticity that results in fatigue damage near the crack tip, and the second (the peak stress) is required for initiating the local fracture processes in the fatigue-damaged region. Both driving forces are required simultaneously and have to exceed some critical minima for crack advancement. Thus, there are two fatigue thresholds instead of one as is normally assumed. However, in a given region, depending on the material and its crack-tip environment, one or the other parameter controls the growth behavior. Thus, normally for all materials (including composites) below a certain critical R ratio, fatigue crack growth is K-max controlled. Above the critical R ratio, it is Delta K controlled. Although one parameter is the controlling factor in a given regime, both driving forces are needed to complete the fatigue description. This two-parametric approach is valid not only at the thresholds, but also at the higher crack growth rates. An understanding of fatigue process, then, requires a systematic evaluation of how these two driving forces vary with the reinforcement size, shape, volume fraction, and distribution, along with other material properties of the constituent phases, such as the interfaces. Finally, this article discusses some of the possible mechanisms and their effects on the two driving forces, using the limited available data in the literature. C1 USN,RES LAB,DIV MAT SCI & TECHNOL,WASHINGTON,DC 20375. RP Vasudevan, AK (reprint author), OFF NAVAL RES,ARLINGTON,VA 22217, USA. NR 40 TC 8 Z9 10 U1 0 U2 0 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD DEC PY 1995 VL 26 IS 12 BP 3199 EP 3210 DI 10.1007/BF02669449 PG 12 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA TK802 UT WOS:A1995TK80200015 ER PT J AU Spanos, G Fonda, RW Vandermeer, RA Matuszeski, A AF Spanos, G Fonda, RW Vandermeer, RA Matuszeski, A TI Microstructural changes in HSLA-100 steel thermally cycled to simulate the heat-affected zone during welding SO METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE LA English DT Article ID AUSTENITE GRAIN-BOUNDARIES; LOW-CARBON; BAINITE; ALLOY; TRANSFORMATIONS AB The microstructural changes that occur in a commercial HSLA-100 steel thermally cycled to simulate weld heat affected zone (HAZ) behavior were systematically investigated primarily by transmission electron microscopy (TEM). Eight different weld thermal cycles, with peak temperatures representative of four HAZ regions (the tempered region, the intercritical region, the fine-grained austenitized region, and the coarse-grained austenitized region) and cooling rates characteristic of high heat input (cooling rate (CR) 5 degrees C/s) and low heat input (CR 60 degrees C/s) welding were simulated in a heating/quenching dilatometer. The as-received base plate consisted of heavily tempered lath martensite, acicular ferrite, and retained austenite matrix phases with precipitates of copper, niobium-carbonitride, and cementite. The microstructural changes in both the matrix and precipitate phases due to thermal cycling were examined by TEM and correlated with the results of (1) conventional optical microscopy, (2) prior austenite grain size measurements, (3) microhardness testing, and (4) dilatometric analysis. Many of the thermal cycles resulted in dramatic changes in both the microstructures and the properties due to the synergistic interaction between the simulated position in the HAZ and the heat input. Some of these microstructures deviate substantially from those predicted from published continuous cooling transformation (CCT) curves. The final microstructure was predominantly dependent upon peak temperature (i.e., position within the HAZ), although the cooling rate (i.e., heat input) strongly affected the microstructures of the simulated intercritical and fine-grained austenitized regions. C1 MIT,CAMBRIDGE,MA 02139. RP Spanos, G (reprint author), USN,RES LAB,PHYS MET BRANCH,WASHINGTON,DC 20375, USA. NR 54 TC 53 Z9 64 U1 2 U2 16 PU MINERALS METALS MATERIALS SOC PI WARRENDALE PA 420 COMMONWEALTH DR, WARRENDALE, PA 15086 SN 1073-5623 J9 METALL MATER TRANS A JI Metall. Mater. Trans. A-Phys. Metall. Mater. Sci. PD DEC PY 1995 VL 26 IS 12 BP 3277 EP 3293 DI 10.1007/BF02669455 PG 17 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering SC Materials Science; Metallurgy & Metallurgical Engineering GA TK802 UT WOS:A1995TK80200021 ER PT J AU Wirtz, JJ AF Wirtz, JJ TI Ozone discourses: Science and politics in global environmental cooperation - Litfin,KT SO MILLENNIUM-JOURNAL OF INTERNATIONAL STUDIES LA English DT Book Review RP Wirtz, JJ (reprint author), USN,POSTGRAD SCH,MONTEREY,CA 93943, USA. NR 1 TC 0 Z9 0 U1 0 U2 0 PU MILLENNIUM-J INT STUD PI LONDON PA LONDON SCHOOL ECONOMICS HOUGHTON ST, LONDON, ENGLAND WC2A 2AE SN 0305-8298 J9 MILLENNIUM-J INT ST JI Millennium-J. Int. Stud. PD WIN PY 1995 VL 24 IS 3 BP 624 EP 626 DI 10.1177/03058298950240030525 PG 3 WC International Relations SC International Relations GA TM112 UT WOS:A1995TM11200043 ER PT J AU Roggero, MA Filippi, B Church, P Hoffman, SL BlumTirouvanziam, U Lopez, JA Esposito, F Matile, H Reymond, CD Fasel, N Corradin, G AF Roggero, MA Filippi, B Church, P Hoffman, SL BlumTirouvanziam, U Lopez, JA Esposito, F Matile, H Reymond, CD Fasel, N Corradin, G TI Synthesis and immunological characterization of 104-mer and 102-mer peptides corresponding to the N- and C-terminal regions of the Plasmodium falciparum CS protein SO MOLECULAR IMMUNOLOGY LA English DT Article DE peptide synthesis; circumsporozoite; P-falciparum; malaria; vaccine ID B-CELL EPITOPES; CIRCUMSPOROZOITE PROTEIN; MALARIA VACCINE; REPETITIVE EPITOPE; SPOROZOITE; ANTIBODIES; IMMUNOGENICITY; SAFETY; IMMUNIZATION; EFFICACY AB We investigated the immunogenicity and the conformational properties of the non-repetitive sequences of the Plasmodium falciparum circumsporozoite (CS) protein. Two polypeptides of 104 and 102 amino acids long, covering, respectively, the N- and C-terminal regions of the CS protein, were synthesized using solid phase Fmoc chemistry. The crude polypeptides were purified by a combination of size exclusion chromatography and RP-HPLC. Sera of mice immunized with the free polypeptides emulsified in incomplete Freund's adjuvant strongly reacted with the synthetic polypeptides as well as with native CS protein as judged by ELISA and IFAT assays. Most importantly, these antisera inhibited the sporozoite invasion of hepatoma cells. In addition, sera derived from donors living in a malaria endemic area recognized the CS 104- and 102-mers. Conformational studies of the CS polypeptides were also performed by circular dichroism spectroscopy showing the presence of a weakly ordered structure that can be increased jy addition of trifluoroethanol. The obtained results indicate that the synthetic CS polypeptides and the natural CS protein share some common antigenic determinants and probably have similar conformation. The approach used in this study might be useful for the development of a synthetic malaria vaccine. C1 UNIV LAUSANNE,INST BIOCHEM,CH-1066 EPALINGES,SWITZERLAND. UNIV PADUA,DEPT ORGAN CHEM,I-35131 PADUA,ITALY. USN,MED RES INST,ROCKVILLE,MD 20852. COOPERAT ITALIENNE,CTR LUTTE CONTRE PALUDISME,OUAGADOUGOU,BURKINA FASO. F HOFFMANN LA ROCHE & CO LTD,PRPI,CH-4002 BASEL,SWITZERLAND. INST HISTOL & EMBRYOL,CH-1007 LAUSANNE,SWITZERLAND. RI Lopez, J. Alejandro/B-9290-2008; Fasel, Nicolas/O-4253-2016 OI Lopez, J. Alejandro/0000-0001-9370-1516; Fasel, Nicolas/0000-0003-0136-7245 NR 30 TC 45 Z9 46 U1 0 U2 0 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0161-5890 J9 MOL IMMUNOL JI Mol. Immunol. PD DEC PY 1995 VL 32 IS 17-18 BP 1301 EP 1309 DI 10.1016/0161-5890(95)00136-0 PG 9 WC Biochemistry & Molecular Biology; Immunology SC Biochemistry & Molecular Biology; Immunology GA TY786 UT WOS:A1995TY78600001 PM 8643099 ER PT J AU BROMWICH, DH ROBASKY, FM CULLATHER, RI VANWOERT, ML AF BROMWICH, DH ROBASKY, FM CULLATHER, RI VANWOERT, ML TI ATMOSPHERIC HYDROLOGIC-CYCLE OVER THE SOUTHERN-OCEAN AND ANTARCTICA FROM OPERATIONAL NUMERICAL-ANALYSES SO MONTHLY WEATHER REVIEW LA English DT Article ID WATER-VAPOR TRANSPORT; DATA ASSIMILATION; ICE-SHEET; HEMISPHERE; PRECIPITATION; CLIMATE; FIELDS; ECMWF; FGGE; HEAT AB Moisture budget calculations for Antarctica and the Southern Ocean (40 degrees-72 degrees S) are performed using operational numerical analyses from the European Centre for Medium-Range Weather Forecasts (ECMWF), the National Meteorological Center (NMC), and the Australian Bureau of Meteorology (ABM). The analyses are intercompared for an 8-yr period from 1985 to 1992 and are evaluated against representative rawinsonde sites, which are considered accurate depictions of moisture transport at these sites. The comparisons to East Antarctic rawinsondes and those from Macquarie Island show the ECMWF analyses to be superior in reproducing sounding values at each level. While results are highly variable depending on the station location, agreement of the ECMWF analyses to zonally averaged sounding moisture Bur values along the East Antarctic coast is very close. The zonally averaged annual meridional moisture flux, for example, is within as little as 0.03 g kg(-1) m s(-1), or 2% at the surface. This is particularly good considering the highly variable inflow and outflow patterns along the Antarctic perimeter. The NMC and ABM analyses generally underestimate transport at each level; error cancellation occurs during vertical integration however. A comparison of moisture convergence for East Antarctica with values calculated from rawinsonde data indicates the ECMWF analysis is within 5 mm yr(-1) of the observed value, while the NMC result is severely deficient. Overall these results are not surprising given the coarse resolution and spectral nature of the analyses. The ability of the ECMWF analyses to reproduce the observed moisture transport at each level is reassuring. Comparison of the moisture transport convergence derived from the numerical analyses with previous moisture flux studies over the Southern Ocean reveals general agreement in the location of the boundary between the moisture source and sink. The ECMWF and NMC analyses place the convergence maximum slightly farther south than has been previously found. It is inferred that this results from the blocking effect of the Antarctic coastal topography. At full resolution this point is at approximately 64 degrees S. Long-term net precipitation (precipitation minus sublimation/evaporation)derived from the numerical analyses is somewhat smaller than values determined by glaciological methods. Net precipitation varies interannually by 25%, with most of the variation concentrated in the South Pacific sector, the region of greatest poleward moisture transport. The results presented here offer a substantially more positive outlook on the prospects of determining continental-scale precipitation trends in Antarctica through atmospheric methods than has been previously found and demonstrate that the ECMWF analyses provide generally good estimates. C1 OHIO STATE UNIV,ATMOSPHER SCI PROGRAM,COLUMBUS,OH 43210. OFF NAVAL RES,ARLINGTON,VA 22217. RP BROMWICH, DH (reprint author), OHIO STATE UNIV,BYRD POLAR RES CTR,POLAR METEOROL GRP,COLUMBUS,OH 43210, USA. RI Bromwich, David/C-9225-2016 NR 56 TC 77 Z9 79 U1 0 U2 1 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 DEC PY 1995 VL 123 IS 12 BP 3518 EP 3538 DI 10.1175/1520-0493(1995)123<3518:TAHCOT>2.0.CO;2 PG 21 WC Meteorology & Atmospheric Sciences SC Meteorology & Atmospheric Sciences GA TG285 UT WOS:A1995TG28500008 ER PT J AU GAVISH, B SRIDHAR, S AF GAVISH, B SRIDHAR, S TI COMPUTING THE 2-MEDIAN ON TREE NETWORKS IN O(N-LG-N) TIME SO NETWORKS LA English DT Article ID LOCATION; MEDIANS AB Location of facilities on tree networks is an important problem in transportation and telecommunication systems. For tree networks, the best-known algorithm to find 2-medians has a time complexity of O(n(2)). By exploiting the properties relating the I-median and the 2-medians in tree networks, and the properties inherent in tree structure, an improved algorithm is developed for computing the e-median. The time complexity of this algorithm is O(n lg n). The details of the algorithm are described along with an illustrative example. (C) 1995 John Wiley & Sons, Inc. C1 USN,POSTGRAD SCH,DEPT SYST MANGAEMENT,MONTEREY,CA 93943. RP GAVISH, B (reprint author), VANDERBILT UNIV,OWEN GRAD SCH MANAGEMENT,NASHVILLE,TN 37203, USA. NR 21 TC 24 Z9 24 U1 0 U2 0 PU JOHN WILEY & SONS INC PI NEW YORK PA 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0028-3045 J9 NETWORKS JI Networks PD DEC PY 1995 VL 26 IS 4 BP 305 EP 317 DI 10.1002/net.3230260413 PG 13 WC Computer Science, Hardware & Architecture; Operations Research & Management Science SC Computer Science; Operations Research & Management Science GA TG304 UT WOS:A1995TG30400012 ER PT J AU Rao, MV Gardner, J Griffiths, P Holland, OW Kelner, G Chi, PH Simons, DS AF Rao, MV Gardner, J Griffiths, P Holland, OW Kelner, G Chi, PH Simons, DS TI P-N junction formation in 6H-SiC by acceptor implantation into n-type substrate SO NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS LA English DT Article; Proceedings Paper CT 9th International Conference on Ion Beam Modification of Materials (IBMM 95) CY FEB 05-10, 1995 CL AUSTR NATL UNIV, CANBERRA, AUSTRALIA SP Austr Natl Univ, Dept Electr Mat Engn, Acad Pr, Harcourt Brace Jovanovich, Alphatech Int Ltd, Austr Mat Res Soc, Balzers Austr P L, Danfysik A S, Elsevier, High Voltage Engn, IBM Austr, Natl Electrostat Corp, Stanton Sci HO AUSTR NATL UNIV ID BETA SILICON-CARBIDE; DIODES; BORON; FABRICATION; NITROGEN AB Al and B implantations were performed into n-type 6H-bulk SiC and epitaxial layers at both room temperature and 850 degrees C. Annealings were performed in the temperature range of 1100-1650 degrees C in a SiC crucible. For single-energy implants, the implant gettered to the 0.7R(p) location for annealing temperatures greater than or equal to 1400 degrees C. For the 850 degrees C implanted samples the RES yield in the annealed material is comparable to the yield in the as-grown material, indicating a good lattice recovery. A maximum activation of 18% for Al-implanted samples was observed. P-N junction diodes were made using Al-implanted material. C1 OAK RIDGE NATL LAB,OAK RIDGE,TN 37831. USN,RES LAB,WASHINGTON,DC 20375. NIST,GAITHERSBURG,MD 20899. RP Rao, MV (reprint author), GEORGE MASON UNIV,DEPT ELECT & COMP ENGN,FAIRFAX,VA 22030, USA. NR 16 TC 1 Z9 1 U1 1 U2 2 PU ELSEVIER SCIENCE BV PI AMSTERDAM PA PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS SN 0168-583X J9 NUCL INSTRUM METH B JI Nucl. Instrum. Methods Phys. Res. Sect. B-Beam Interact. Mater. Atoms PD DEC PY 1995 VL 106 IS 1-4 BP 333 EP 338 DI 10.1016/0168-583X(96)80026-7 PG 6 WC Instruments & Instrumentation; Nuclear Science & Technology; Physics, Atomic, Molecular & Chemical; Physics, Nuclear SC Instruments & Instrumentation; Nuclear Science & Technology; Physics GA TM521 UT WOS:A1995TM52100063 ER PT J AU Gnuechtel, MM Sales, JH Pitman, KT AF Gnuechtel, MM Sales, JH Pitman, KT TI Plexiform neurofibroma of the retropharyngeal space: A case report SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Note CT Annual Meeting of the American-Academy-of-Otolaryngology-Head-and-Neck-Surgery CY SEP 18-21, 1994 CL SAN DIEGO, CA SP Amer Acad Otolaryngol Head & Neck Surg ID HEAD; NECK; MANAGEMENT; ANATOMY RP Gnuechtel, MM (reprint author), USN,MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,PORTSMOUTH,VA 23708, USA. NR 13 TC 3 Z9 3 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD DEC PY 1995 VL 113 IS 6 BP 778 EP 781 DI 10.1016/S0194-5998(95)70020-X PG 4 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA TK813 UT WOS:A1995TK81300020 PM 7501392 ER PT J AU Hunsaker, DH Martin, PJ AF Hunsaker, DH Martin, PJ TI Allergic reaction to solid silicone implant in medial thyroplasty SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Note CT Annual Meeting of the American-Academy-of-Otolaryngology-Head-and-Neck-Surgery CY SEP 18-21, 1994 CL SAN DIEGO, CA SP Amer Acad Otolaryngol Head & Neck Surg C1 USN,MED CTR,DEPT OTOLARYNGOL,SAN DIEGO,CA 92134. RP Hunsaker, DH (reprint author), USN,MED CTR,DEPT CLIN INVEST,SAN DIEGO,CA 92134, USA. NR 6 TC 21 Z9 24 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD DEC PY 1995 VL 113 IS 6 BP 782 EP 784 DI 10.1016/S0194-5998(95)70021-8 PG 3 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA TK813 UT WOS:A1995TK81300021 PM 7501393 ER PT J AU Yencha, MW Sassler, AM Drohan, PS AF Yencha, MW Sassler, AM Drohan, PS TI Intraoral benign mesenchymomas SO OTOLARYNGOLOGY-HEAD AND NECK SURGERY LA English DT Note RP Yencha, MW (reprint author), USN,MED CTR,DEPT OTOLARYNGOL HEAD & NECK SURG,620 JOHN PAUL JONES CIRCLE,PORTSMOUTH,VA 23708, USA. NR 15 TC 4 Z9 4 U1 0 U2 0 PU MOSBY-YEAR BOOK INC PI ST LOUIS PA 11830 WESTLINE INDUSTRIAL DR, ST LOUIS, MO 63146-3318 SN 0194-5998 J9 OTOLARYNG HEAD NECK JI Otolaryngol. Head Neck Surg. PD DEC PY 1995 VL 113 IS 6 BP 816 EP 819 DI 10.1016/S0194-5998(95)70030-7 PG 4 WC Otorhinolaryngology; Surgery SC Otorhinolaryngology; Surgery GA TK813 UT WOS:A1995TK81300030 PM 7501402 ER PT J AU Marsh, SP Masumura, RA Pande, CS AF Marsh, SP Masumura, RA Pande, CS TI A curvature-driven vertex model for two-dimensional grain growth SO PHILOSOPHICAL MAGAZINE LETTERS LA English DT Article ID COMPUTER-SIMULATION AB A new vertex-based model of two-dimensional grain growth is presented. The motion of each vertex is determined by the curvature-driven motions of the adjacent boundaries. Boundary curvatures are approximated by a geometrical construction that is fully specified by the locations of the three neighbouring vertices. Simulations based on this model exhibit parabolic growth kinetics for the grain aggregate, and the Mullins-von Neumann growth law is obtained for individual grains. RP Marsh, SP (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 11 TC 3 Z9 3 U1 0 U2 0 PU TAYLOR & FRANCIS LTD PI LONDON PA ONE GUNDPOWDER SQUARE, LONDON, ENGLAND EC4A 3DE SN 0950-0839 J9 PHIL MAG LETT JI Philos. Mag. Lett. PD DEC PY 1995 VL 72 IS 6 BP 429 EP 434 DI 10.1080/09500839508242484 PG 6 WC Materials Science, Multidisciplinary; Metallurgy & Metallurgical Engineering; Physics, Applied; Physics, Condensed Matter SC Materials Science; Metallurgy & Metallurgical Engineering; Physics GA TL176 UT WOS:A1995TL17600010 ER PT J AU Agassi, D Pande, CS Masumura, RA AF Agassi, D Pande, CS Masumura, RA TI Superconductor superlattice model for small-angle grain boundaries in Y-Ba-Cu-O SO PHYSICAL REVIEW B LA English DT Article ID CRITICAL CURRENTS; CURRENT-DENSITY; TRANSPORT; YBA2CU3O7-DELTA; BICRYSTALS; BEHAVIOR; GLASS; STATE AB The measured critical current ratios of small-angle Y-Ba-Cu-O grain boundaries fabricated by Dimos et al., are calculated from a superconducting superlattice model where the periodicity is given by the Read-Shockley formula. The layers' thicknesses are estimated from stress-field calculations of a periodic edge-dislocations array model. The measured critical current dependence on the misalignment angle and the temperature are reproduced with a single fitting parameter. This parameter is related to the stress field in proximity to an edge dislocation. The model's validity and comparison with other attempts at the same data are discussed. C1 USN,RES LAB,WASHINGTON,DC 20375. RP Agassi, D (reprint author), USN,CTR SURFACE WARFARE,WHITE OAK,MD 20903, USA. NR 36 TC 25 Z9 25 U1 0 U2 1 PU AMERICAN PHYSICAL SOC PI COLLEGE PK PA ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA SN 0163-1829 J9 PHYS REV B JI Phys. Rev. B PD DEC 1 PY 1995 VL 52 IS 22 BP 16237 EP 16245 DI 10.1103/PhysRevB.52.16237 PG 9 WC Physics, Condensed Matter SC Physics GA TL813 UT WOS:A1995TL81300081 ER PT J AU Carroll, TL AF Carroll, TL TI Controlling a chaotic array of pulse-coupled circuits SO PHYSICAL REVIEW E LA English DT Article ID SYNCHRONIZATION; OSCILLATORS AB There has been much attention given to controlling biological systems with pulses, but there has been less attention given to studying the physics of these systems and how the control interacts with the physics. In this work, a set of four circuits intended to simulate the physics of neurons (based on a modified version of the FitzHugh-Nagumo equations) is coupled by pulses, producing a high dimensional system. Numerical simulations and experiments are used to study simple, pulse-based control schemes for this system. A pulse control scheme that requires less knowledge of the system than an Ott-Grebogi-Yorke control scheme is used, and its efficiency is compared to that of periodic pacing and demand pacing. RP Carroll, TL (reprint author), USN, RES LAB, WASHINGTON, DC 20375 USA. OI Carroll, Thomas/0000-0002-2371-2049 NR 25 TC 4 Z9 4 U1 0 U2 0 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 DEC PY 1995 VL 52 IS 6 BP 5817 EP 5824 DI 10.1103/PhysRevE.52.5817 PN A PG 8 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA TK653 UT WOS:A1995TK65300023 ER PT J AU BARSHALOM, A OREG, J SEELY, JF FELDMAN, U BROWN, CM HAMMEL, BA LEE, RW BACK, CA AF BARSHALOM, A OREG, J SEELY, JF FELDMAN, U BROWN, CM HAMMEL, BA LEE, RW BACK, CA TI INTERPRETATION OF HOT AND DENSE ABSORPTION-SPECTRA OF A NEAR-LOCAL-THERMODYNAMIC-EQUILIBRIUM PLASMA BY THE SUPER-TRANSITION-ARRAY METHOD SO PHYSICAL REVIEW E LA English DT Article AB The super-transition-array model is shown to be a very convenient tool for the interpretation of near-local-thermodynamic-equilibrium hot and dense plasmas. Specifically, we interpret here the absorption spectra of the CH-Ni-CH foil experiment performed at Lawrence Livermore National Laboratory using the backlighter technique. In this experiment a laminar foil composed of 200-Angstrom Ni with 1000-Angstrom CH on both sides was radiatively heated by the x-ray continuum from a nearby gold plasma and was backlit by the x-ray continuum from a distant gold plasma that could be time delayed with respect to the heating pulse. This setup was designed to achieve a uniform density and heating of the Ni middle layer. It is found that the Ni absorption features depend very weakly on the density of the foil but are quite sensitive to the foil temperature. Remarkably good agreement between the theory and the experiment is obtained for the Ni 2p-3d spectrum. The detailed features indicate that the plasma temperature-is confined to a narrow range between 14 and 18 eV, demonstrating that the foil design, aiming to create a homogeneous Ni plasma, was successful. These results represent an alternative temperature diagnostic for high-Z plasma. C1 USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375. LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550. RP BARSHALOM, A (reprint author), NUCL RES CTR NEGEV,POB 9001,IL-84190 BEER SHEVA,ISRAEL. NR 10 TC 18 Z9 19 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 DEC PY 1995 VL 52 IS 6 BP 6686 EP 6691 DI 10.1103/PhysRevE.52.6686 PN B PG 6 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA TK655 UT WOS:A1995TK65500043 ER PT J AU BAUER, JD BACK, CA CASTOR, JI DYKEMA, PG HAMMEL, BA LEE, RW NASH, JK SEELY, JF FELDMAN, U BROWN, CM AF BAUER, JD BACK, CA CASTOR, JI DYKEMA, PG HAMMEL, BA LEE, RW NASH, JK SEELY, JF FELDMAN, U BROWN, CM TI SIMULATION AND ANALYSIS OF AN X-RAY-HEATED BORON-NITRIDE FOIL SO PHYSICAL REVIEW E LA English DT Article ID SPIN-INDUCED AUTOIONIZATION; RADIATIVE TRANSITION RATES; LITHIUMLIKE IONS; PLASMAS; SPECTRA; OPACITY; STATES; LINES; IRON; HOT AB We analyze an experiment performed at the Nova laser facility, at Lawrence Livermore National Laboratory, in which x rays, produced by a gold burn-through foil, heated an 1800-Angstrom boron-nitride (BN) foil. The BN foil was not hydrodynamically tamped and therefore provides an excellent example for testing our success at modeling systems with large density and temperature gradients. A time-integrated absorption spectrum was obtained. This spectrum reveals He-like and H-like boron features, He-like nitrogen features, as well as Li-Like satellites to the resonance Lines for both boron and nitrogen. The ALTAIR radiation hydrodynamics code and the TOTAL line-shape code were the basic instruments used in the analysis. Simulations address the temporal evolution of the temperature and density profiles as well as the ionization balance for the x-ray driven boron nitride foil. A synthesized spectrum is compared with the experimental absorption spectrum, and particular attention is given to the Li-Like satellite structure. The analysis of this seemingly simple experiment clearly reveals both current strengths and inadequacies in modeling hot dense matter. C1 USN,RES LAB,WASHINGTON,DC 20375. RP BAUER, JD (reprint author), LAWRENCE LIVERMORE NATL LAB,LIVERMORE,CA 94550, USA. NR 30 TC 5 Z9 5 U1 1 U2 4 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 DEC PY 1995 VL 52 IS 6 BP 6736 EP 6752 DI 10.1103/PhysRevE.52.6736 PN B PG 17 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA TK655 UT WOS:A1995TK65500047 ER PT J AU GANGULY, AK CHOI, JJ ARMSTRONG, CM AF GANGULY, AK CHOI, JJ ARMSTRONG, CM TI NONLINEAR-THEORY OF A FOLDED WAVE-GUIDE GYROTRON TRAVELING-WAVE TUBE AMPLIFIER SO PHYSICAL REVIEW E LA English DT Article ID MODULATED ELECTRON-BEAMS; GYROHARMONIC RADIATION AB We have developed a three-dimensional nonlinear theory for broadband gyrotron traveling-wave amplification in an H-plane-bend folded waveguide. The H-plane-bend configuration is formed by folding a rectangular waveguide so that the orientation of the magnetic field changes along the bend in contrast to the conventional E-plane bend, where the orientation of the electric field changes. Calculations show the feasibility of amplifier operation with large instantaneous bandwidth and moderate efficiency both in the slow wave region and the reduced dispersion fast wave region. Numerical results for a cold beam show an efficiency of 26% with 11% bandwidth in the slow wave region and an efficiency of 47% with 10% bandwidth in the fast wave region. For an electron beam with 2% velocity spread and 2% guiding center spread, the slow wave efficiency drops to 6% but the bandwidth increases to 16% whereas the efficiency and bandwidth of the fast waves decrease by a small amount to 42% and 9.5%, respectively. The efficiency is more sensitive to the axial beam velocity spread in the slow wave region due to larger Doppler shift. C1 NORTHROP GRUMMAN CORP,ROLLING MEADOWS,IL 60008. OMEGA P INC,NEW HAVEN,CT 06520. SCI APPLICAT INT CORP,MCLEAN,VA 22102. RP GANGULY, AK (reprint author), USN,RES LAB,WASHINGTON,DC 20375, USA. NR 18 TC 2 Z9 3 U1 0 U2 0 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 DEC PY 1995 VL 52 IS 6 BP 6777 EP 6786 DI 10.1103/PhysRevE.52.6777 PN B PG 10 WC Physics, Fluids & Plasmas; Physics, Mathematical SC Physics GA TK655 UT WOS:A1995TK65500050 ER PT J AU VELIKOVICH, AL DAVIS, J AF VELIKOVICH, AL DAVIS, J TI IMPLOSIONS, EQUILIBRIA, AND STABILITY OF ROTATING, RADIATING Z-PINCH PLASMAS SO PHYSICS OF PLASMAS LA English DT Article ID ELECTROMAGNETIC COLLAPSE; DENSE PINCH; INSTABILITIES AB The effects of uniform rotation on the dynamics, equilibria and stability of cylindrically symmetric, radiating Z-pinch plasmas are studied. Rotation changes the Bennett and Pease-Braginskii equilibria qualitatively, eliminating radiative collapse for both quasisteady and dynamic plasmas. In particular, a steady rotating plasma column can support any current above the Pease-Braginskii value, with Ohmic heating balanced by radiative losses. Stabilizing effect of rotation on the m=0 mode of Rayleigh-Taylor instability of a hollow plasma shell was found for long perturbation wavelengths. (C) 1995 American Institute of Physics. C1 USN, RES LAB, DIV PLASMA PHYS, RADIAT HYDRODYNAM BRANCH, WASHINGTON, DC 20375 USA. RP VELIKOVICH, AL (reprint author), BERKELEY SCHOLARS INC, SPRINGFIELD, VA 22150 USA. RI Velikovich, Alexander/B-1113-2009 NR 24 TC 8 Z9 8 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 1070-664X J9 PHYS PLASMAS JI Phys. Plasmas PD DEC PY 1995 VL 2 IS 12 BP 4513 EP 4520 DI 10.1063/1.871467 PG 8 WC Physics, Fluids & Plasmas SC Physics GA TH680 UT WOS:A1995TH68000016 ER PT J AU Fang, JD Sanborn, CK Renegar, KB Majde, JA Krueger, JM AF Fang, JD Sanborn, CK Renegar, KB Majde, JA Krueger, JM TI Influenza viral infections enhance sleep in mice SO PROCEEDINGS OF THE SOCIETY FOR EXPERIMENTAL BIOLOGY AND MEDICINE LA English DT Article ID DOUBLE-STRANDED-RNA; BRAIN TEMPERATURE; FATIGUE SYNDROME; VIRUS INFECTION; HOST-DEFENSE; IMMUNITY; ANTIBODY; RABBITS AB Sleepiness is a common perception during viral Infection. Nevertheless, very little is known about the effects of viral infection on sleep. The aim of the present study was to test whether sleep was altered by influenza viral infection in mice. After 2-3 days of baseline sleep recordings, Swiss-Webster mice were infected intranasally with a lethal (H1N1) or a nonlethal (H3N2) strain of influenza virus. Sleep was recorded again for an additional 3 days. Non-rapid eye movement sleep (NREMS) was dramatically increased after inoculation of the H1N1 virus with a latency about 16 hr. Rapid eye movement sleep (REMS) was significantly suppressed after a longer latency. Both changes fasted until the end of the recording and occurred in both young (35-day-old) and adult (90- to 100-day-old) animals. Control animals did not show changes In sleep after sham infection with allantoic fluid. The H1N1 virus also caused dramatic decreases in body temperature and locomotor activities with a latency about 4-5 hr after viral inoculation. The H3N2 virus induced very similar changes in sleep, although the effects were much smaller in magnitude than those induced by the H1N1 virus, even though a much higher dose (10-fold) of the H3N2 virus was used. The present study shows that influenza viral Infection induces profound and long-lasting increase of NREMS and suppression of REMS. These viral-induced changes in sleep likely represent a host-defense response. C1 UNIV TENNESSEE, DEPT PHYSIOL & BIOPHYS, MEMPHIS, TN 38163 USA. OFF NAVAL RES, ARLINGTON, VA 22217 USA. NR 40 TC 49 Z9 50 U1 0 U2 3 PU WILEY-BLACKWELL PI MALDEN PA COMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USA SN 0037-9727 J9 P SOC EXP BIOL MED JI Proc. Soc. Exp. Biol. Med. PD DEC PY 1995 VL 210 IS 3 BP 242 EP 252 PG 11 WC Medicine, Research & Experimental SC Research & Experimental Medicine GA TM881 UT WOS:A1995TM88100007 PM 8539262 ER PT J AU Hudson, LC Bernecker, RR AF Hudson, LC Bernecker, RR TI Numerical calibration of donor systems for some gap tests SO PROPELLANTS EXPLOSIVES PYROTECHNICS LA English DT Article AB Numerical models of various donor/attenuator systems utilized in gap tests were evaluated with the DYNA2D hydrocode. Three donor (pressed pentolite)/attenuator (PMMA) configurations were tested. Case 1 and Case 2 had a pentolite donor which was 2 cm x 2 cm right cylinder; the cell size was smaller in Case 1. Case 3 utilized a composite pentolite donor 2.07 cm long but having stepped diameters of one and two cm; the cell size was quite similar to that of Case 2. Peak (axial) pressure versus distance results from Case 1 were scaled and compared to experimental data for both the NOL large scale gap test (LSGT) and the NSWC expanded large scale gap test (ELSGT). The comparison was found to be very good for the LSGT but less satisfactory for the ELSGT. Peak (axial) pressure versus distance results from Case 1 were also compared to Case 2, a coarser zoned model similar to Case 1, and Case 3. This comparison showed that the composite donor produced peak (axial) pressures similar to those from the LSGT model. Normalized peak pressure versus radial distance and shock profiles were compared for the three cases and found to be quite similar. Additional normalized peak pressure versus radial distance and normalized pressure versus time information from Case 1 is plotted to show how the pentolite/PMMA rarefaction affects both the axial and radial pressure-time histories. RP Hudson, LC (reprint author), USN,CTR SURFACE WARFARE,SILVER SPRING,MD 20903, USA. NR 17 TC 2 Z9 2 U1 0 U2 0 PU VCH PUBLISHERS INC PI DEERFIELD BEACH PA 303 NW 12TH AVE, DEERFIELD BEACH, FL 33442-1788 SN 0721-3115 J9 PROPELL EXPLOS PYROT JI Propellants Explos. Pyrotech. PD DEC PY 1995 VL 20 IS 6 BP 330 EP 336 DI 10.1002/prep.19950200609 PG 7 WC Chemistry, Applied; Engineering, Chemical SC Chemistry; Engineering GA TV623 UT WOS:A1995TV62300008 ER PT J AU Keizur, JJ Kane, CJ North, R Leidich, RB AF Keizur, JJ Kane, CJ North, R Leidich, RB TI Adenocarcinoma of the prostate metastatic to the choroid of the eye SO PROSTATE LA English DT Article DE choroidal metastases; androgen ablation; ocular metastases; hormonal therapy ID ORBITAL METASTASES; CARCINOMA AB We report an unusual case of bilateral choroidal masses developing in a patient with metastatic prostate cancer. Visual symptoms resolved and ocular mass lesions regressed after initiating total androgen deprivation. The natural history and management of choroidal metastatis originating from prostate cancer is discussed. (C) 1995 Wiley-Liss, Inc.* C1 USN,MED CTR,DEPT UROL,SAN DIEGO,CA 92134. USN,MED CTR,DEPT OPHTHALMOL,OAKLAND,CA. NR 16 TC 5 Z9 5 U1 0 U2 0 PU WILEY-LISS PI NEW YORK PA DIV JOHN WILEY & SONS INC 605 THIRD AVE, NEW YORK, NY 10158-0012 SN 0270-4137 J9 PROSTATE JI Prostate PD DEC PY 1995 VL 27 IS 6 BP 336 EP 339 DI 10.1002/pros.2990270607 PG 4 WC Endocrinology & Metabolism; Urology & Nephrology SC Endocrinology & Metabolism; Urology & Nephrology GA TK977 UT WOS:A1995TK97700006 PM 7501546 ER PT J AU FRANTZICH, S AF FRANTZICH, S TI PRESS BRIEFINGS EXERCISE SO PS-POLITICAL SCIENCE & POLITICS LA English DT Article RP FRANTZICH, S (reprint author), USN ACAD,ANNAPOLIS,MD 21402, USA. NR 0 TC 2 Z9 2 U1 0 U2 0 PU AMER POLITICAL SCI ASSN PI WASHINGTON PA 1527 NEW HAMPSHIRE N W, WASHINGTON, DC 20036 SN 1049-0965 J9 PS JI PS-Polit. Sci. Polit. PD DEC PY 1995 VL 28 IS 4 BP 728 EP 730 DI 10.2307/420529 PG 3 WC Political Science SC Government & Law GA TH444 UT WOS:A1995TH44400016 ER PT J AU Domankevitz, Y Kwok, HS Copley, JA AF Domankevitz, Y Kwok, HS Copley, JA TI A laser device for perforating materials SO REVIEW OF SCIENTIFIC INSTRUMENTS LA English DT Note AB A Nd:YAG laser device for perforating materials was developed. The device generates a modified temporal pulse structure of both free-running and Q-switched laser irradiation. This modified structure enhances drilling efficiency by a factor of 2 compared to foe-running irradiation and is achieved by mechanical blow-off of preheated material. Such a device is well suited for compact portable field applications. (C) 1995 American Institute of Physics. C1 SUNY BUFFALO,DEPT ELECT & COMP ENGN,AMHERST,NY 14260. USN,CTR SURFACE WARFARE,DAHLGREN,VA 22448. RP Domankevitz, Y (reprint author), MASSACHUSETTS GEN HOSP,WELLMAN LABS PHOTOMED,BOSTON,MA 02114, USA. NR 10 TC 0 Z9 0 U1 0 U2 0 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 DEC PY 1995 VL 66 IS 12 BP 5642 EP 5643 DI 10.1063/1.1146035 PG 2 WC Instruments & Instrumentation; Physics, Applied SC Instruments & Instrumentation; Physics GA TK573 UT WOS:A1995TK57300045 ER PT J AU Smith, DR AF Smith, DR TI The Maury project: An educational partnership SO SEA TECHNOLOGY LA English DT Editorial Material RP Smith, DR (reprint author), USN ACAD,DEPT OCEANOG,ANNAPOLIS,MD 21402, USA. NR 0 TC 0 Z9 0 U1 0 U2 0 PU COMPASS PUBL INC PI ARLINGTON PA SUITE 1000 1117 N 19 ST, ARLINGTON, VA 22209 SN 0093-3651 J9 SEA TECHNOL JI Sea Technol. PD DEC PY 1995 VL 36 IS 12 BP 101 EP 101 PG 1 WC Engineering, Ocean SC Engineering GA TM178 UT WOS:A1995TM17800010 ER PT J AU ORAIFEARTAIGH, C BRADLEY, L BARKLIE, RC HODGE, AM RICHMOND, ED AF ORAIFEARTAIGH, C BRADLEY, L BARKLIE, RC HODGE, AM RICHMOND, ED TI SPIN-DEPENDENT PHOTOCONDUCTIVITY IN CVD-GROWN AND MBE-GROWN SILICON-ON-SAPPHIRE SO SEMICONDUCTOR SCIENCE AND TECHNOLOGY LA English DT Article ID MOLECULAR-BEAM EPITAXY; N-JUNCTION DIODES; RECOMBINATION; IMPROVEMENT; MICROTWINS; FILMS AB Spin-dependent photoconductivity is observed in (100) silicon films grown on sapphire by CVD and MBE. The CVD films are either in their as-grown state or have undergone single or double solid-phase epitaxial regrowth. For all samples a resonant decrease in photoconductivity is observed at a field of about 0.34 T for a microwave frequency of about 9.6 GHz and at about 3.3 mT when the frequency is about 92 MHz. The fractional change in photoconductivity at resonance is measured as a function of the magnetic field strength, microwave or radiofrequency power, temperature, light intensity and sample voltage. The results are interpreted in terms of a quantum mechanical treatment of the pair model of Kaplan, Solomon and Mott and values are extracted for the spin relaxation time, pair dissociation rate and singlet recombination rate. In some samples a resonant change in dark conductivity is also observed and interpreted. C1 DEF RES AGCY,MALVERN,WORCS,ENGLAND. USN,RES LAB,WASHINGTON,DC 20375. RP ORAIFEARTAIGH, C (reprint author), TRINITY COLL DUBLIN,DEPT PHYS,DUBLIN 2,IRELAND. NR 27 TC 2 Z9 2 U1 1 U2 1 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0268-1242 J9 SEMICOND SCI TECH JI Semicond. Sci. Technol. PD DEC PY 1995 VL 10 IS 12 BP 1595 EP 1603 DI 10.1088/0268-1242/10/12/007 PG 9 WC Engineering, Electrical & Electronic; Materials Science, Multidisciplinary; Physics, Condensed Matter SC Engineering; Materials Science; Physics GA TJ508 UT WOS:A1995TJ50800007 ER PT J AU KANG, YH FALK, MC BENTLEY, TB LEE, CH AF KANG, YH FALK, MC BENTLEY, TB LEE, CH TI DISTRIBUTION AND ROLE OF LIPOPOLYSACCHARIDE IN THE PATHOGENESIS OF ACUTE RENAL PROXIMAL TUBULE INJURY SO SHOCK LA English DT Article ID INTERCELLULAR-ADHESION MOLECULE-1; BACTERIAL LIPOPOLYSACCHARIDE; VASCULAR INJURY; ENDOTOXIN; LOCALIZATION; PRIMATE; SEPSIS; CELLS; RATS; INFLAMMATION AB Endotoxins (lipopolysaccharides; LPS) are known to cause multiple organ failure, including renal dysfunction. The present report elucidates LPS distribution and effect on renal proximal tubules in an attempt to gain a better understanding of the cellular mechanism underlying the pathogenesis of renal dysfunction in endotoxemia and sepsis. Rats were intravenously treated with biotin-linked or regular Escherichia coli (0111:B4) LPS (3 mg/kg) and sacrificed at different times, Kidneys were retrieved and examined for LPS localization, tubular permeability, ultracytochemical alterations, leukocyte sequestration, and ICAM-1 expression. The functional impact of endotoxemia was also assessed by monitoring the changes in urine levels of glucose in timed collections up to 6 h. LPS was localized on the plasma membranes of the apical microvilli, the labyrinth of the lateral intercellular spaces, in various organelles of epithelial cells, and in the endothelial cells of the peritubular capillaries. LPS caused structural damage and calcium accumulation in the mitochondria, leakage of tight junctions, widening of the basolateral intercellular spaces, intracellular and extracellular edema, leukocyte margination and accumulation, vascular expression of ICAM-1, and decrease of plasma membrane and mitochondria[ Ca2+-ATPase. Physiological study showed that both urine volume and glucose were greatly increased after LPS infusion. The pathological alterations in the proximal tubules may directly contribute to the reduction in the reabsorption ability of the proximal tubules. RP KANG, YH (reprint author), USN,MED RES INST,SEPT SHOCK RES PROGRAM,8901 WISCONSIN AVE,BETHESDA,MD 20889, USA. NR 35 TC 35 Z9 38 U1 0 U2 1 PU BIOMEDICAL PRESS PI AUGUSTA PA 1021 15TH ST, BIOTECH PARK STE 9, AUGUSTA, GA 30901 SN 1073-2322 J9 SHOCK JI Shock PD DEC PY 1995 VL 4 IS 6 BP 441 EP 449 PG 9 WC Critical Care Medicine; Hematology; Surgery; Peripheral Vascular Disease SC General & Internal Medicine; Hematology; Surgery; Cardiovascular System & Cardiology GA TJ338 UT WOS:A1995TJ33800009 PM 8608402 ER PT J AU Su, JH AF Su, JH TI Load transmissibility control by virtual substructures SO SMART MATERIALS & STRUCTURES LA English DT Article AB A general and systematic approach to controlling the longitudinal load transmissibility in a rod by coupling generalized substructures is presented. This approach illustrates the general concept of 'substructure' by formulating the active controllers as virtual substructures coupled to the main structure. The dynamics and load transmissibility of a rod are modeled in modal state space form. The three control algorithms IMSC, ELVC and GSLQ are formulated as three different substructures as well as in state space form so that an explicit substructure dynamics can be realized. The performance of the different algorithms is based on the reaction force at the fixed end subject to a disturbance force at the other (free) end. A performance measure is defined as the reaction force ratio of the closed-loop (coupled with the substructure) to the open-loop (without the substructure). The performance of all three controllers or substructures is presented both in frequency and time. This general approach has provided a way to appreciate the effect of any substructure (either a controller or an attached structure) on the main structure. This has an important implication for designing substructures for the desired response of the coupled structure. C1 USN,CTR SURFACE WARFARE,CARDEROCK DIV,STRUCT ACOUST & HYDROACOUST RES BRANCH,BETHESDA,MD 20084. NR 8 TC 1 Z9 1 U1 0 U2 0 PU IOP PUBLISHING LTD PI BRISTOL PA TECHNO HOUSE, REDCLIFFE WAY, BRISTOL, ENGLAND BS1 6NX SN 0964-1726 J9 SMART MATER STRUCT JI Smart Mater. Struct. PD DEC PY 1995 VL 4 IS 4 BP 356 EP 362 DI 10.1088/0964-1726/4/4/016 PG 7 WC Instruments & Instrumentation; Materials Science, Multidisciplinary SC Instruments & Instrumentation; Materials Science GA TQ679 UT WOS:A1995TQ67900016 ER PT J AU Delaboudiniere, JP Artzner, GE Brunaud, J Gabriel, AH Hochedez, JF Millier, F Song, XY Au, B Dere, KP Howard, RA Kreplin, R Michels, DJ Moses, JD Defise, JM Jamar, C Rochus, P Chauvineau, JP Marioge, JP Catura, RC Lemen, JR Shing, L Stern, RA Gurman, JB Neupert, WM Maucherat, A Clette, F Cugnon, P VanDessel, EL AF Delaboudiniere, JP Artzner, GE Brunaud, J Gabriel, AH Hochedez, JF Millier, F Song, XY Au, B Dere, KP Howard, RA Kreplin, R Michels, DJ Moses, JD Defise, JM Jamar, C Rochus, P Chauvineau, JP Marioge, JP Catura, RC Lemen, JR Shing, L Stern, RA Gurman, JB Neupert, WM Maucherat, A Clette, F Cugnon, P VanDessel, EL TI EIT: Extreme-ultraviolet imaging telescope for the SOHO mission SO SOLAR PHYSICS LA English DT Article DE solar X-rays; solar EUV; multilayer telescope ID OPTICAL-CONSTANTS; THIN-FILMS; 1216-A; 24-A AB The Extreme-ultraviolet Imaging Telescope (EIT) will provide wide-field images of the corona and transition region on the solar disc and up to 1.5 R. above the solar limb. Its normal incidence multilayer-coated optics will select spectral emission lines from Fe IX (171 Angstrom), Fe XII (195 Angstrom), Fe XV (284 Angstrom), and He II (304 Angstrom) to provide sensitive temperature diagnostics in the range from 6 x 10(4) K to 3 x 10(6) K. The telescope has a 45 x 45 arcmin field of view and 2.6 arcsec pixels which will provide approximately 5-arcsec spatial resolution. The EIT will probe the coronal plasma on a global scale, as well as the underlying cooler and turbulent atmosphere, providing the basis for comparative analyses with observations from both the ground and other SOHO instruments. This paper presents details of the EIT instrumentation, its performance and operating modes. C1 USN,RES LAB,WASHINGTON,DC 20375. CTR SPATIAL LIEGE,LIEGE,BELGIUM. INST OPT THEOR & APPL,F-91403 ORSAY,FRANCE. LOCKHEED PALO ALTO RES LABS,PALO ALTO,CA 94304. NASA,GODDARD SPACE FLIGHT CTR,GREENBELT,MD 20771. ASTRON SPATIALE LAB,MARSEILLE,FRANCE. OBSERV ROYAL BELGIQUE,B-1180 BRUSSELS,BELGIUM. RP Delaboudiniere, JP (reprint author), UNIV PARIS 11,INST ASTROPHYS SPATIALE,F-91405 ORSAY,FRANCE. NR 21 TC 1385 Z9 1415 U1 3 U2 22 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0038-0938 J9 SOL PHYS JI Sol. Phys. PD DEC PY 1995 VL 162 IS 1-2 BP 291 EP 312 DI 10.1007/BF00733432 PG 22 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TM503 UT WOS:A1995TM50300010 ER PT J AU Brueckner, GE Howard, RA Koomen, MJ Korendyke, CM Michels, DJ Moses, JD Socker, DG Dere, KP Lamy, PL Llebaria, A Bout, MV Schwenn, R Simnett, GM Bedford, DK Eyles, CJ AF Brueckner, GE Howard, RA Koomen, MJ Korendyke, CM Michels, DJ Moses, JD Socker, DG Dere, KP Lamy, PL Llebaria, A Bout, MV Schwenn, R Simnett, GM Bedford, DK Eyles, CJ TI The large angle spectroscopic coronagraph (LASCO) SO SOLAR PHYSICS LA English DT Article DE sun; corona; coronagraph AB The Large Angle Spectroscopic Coronagraph (LASCO) is a three coronagraph package which has been jointly developed for the Solar and Heliospheric Observatory (SOHO) mission by the Naval Research Laboratory (USA), the Laboratoire d'Astronomie Spatiale (France), the Max-Planck-Institut fur Aeronomie (Germany), and the University of Birmingham (UK). LASCO comprises three coronagraphs, C1, C2, and C3, that together image the solar corona from 1.1 to 30 R. (C1: 1.1 - 3 R., C2: 1.5 - 6 R., and C3: 3.7 - 30 R.) The C1 coronagraph is a newly developed mirror version of the classic internally-occulted Lyot coronagraph, while the C2 and C3 coronagraphs are externally occulted instruments. High-resolution imaging spectroscopy of the corona from 1.1 to 3 R. can be performed with the Fabry-Perot interferometer in C1. High-volume memories and a high-speed microprocessor enable extensive on-board image processing. Image compression by a factor of about 10 will result in the transmission of 10 full images per hour. C1 ASTRON SPATIALE LAB,MARSEILLE,FRANCE. MAX PLANCK INST AERON,LINDAU,GERMANY. UNIV BIRMINGHAM,SCH PHYS & SPACE RES,SPACE RES GRP,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND. RP Brueckner, GE (reprint author), USN,RES LAB,EO HULBURT CTR SPACE RES,WASHINGTON,DC 20375, USA. NR 14 TC 1519 Z9 1543 U1 8 U2 32 PU KLUWER ACADEMIC PUBL PI DORDRECHT PA SPUIBOULEVARD 50, PO BOX 17, 3300 AA DORDRECHT, NETHERLANDS SN 0038-0938 J9 SOL PHYS JI Sol. Phys. PD DEC PY 1995 VL 162 IS 1-2 BP 357 EP 402 DI 10.1007/BF00733434 PG 46 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TM503 UT WOS:A1995TM50300012 ER PT J AU KROWNE, CM IKOSSIANASTASIOU, K KOUGIANOS, E AF KROWNE, CM IKOSSIANASTASIOU, K KOUGIANOS, E TI EARLY VOLTAGE IN HETEROJUNCTION BIPOLAR-TRANSISTORS - QUANTUM TUNNELING AND BASE RECOMBINATION EFFECTS SO SOLID-STATE ELECTRONICS LA English DT Review ID GAAS AB An extension of the thermionic emission expression for Early voltage V-A for heterojunction bipolar transistors including quantum mechanical tunneling and base recombination effects is provided. The theoretical model is based on a single flux treatment of the carrier transport invoking the concise notation of scattering matrices. V-A is numerically evaluated under the WKB quantum mechanical approximation for triangular and parabolic barriers. The temperature dependence of the Early voltage is simulated numerically and compared to earlier theoretical V-A predictions and actual experimental results of V-A in heterojunction bipolar transistors. C1 LOUISIANA STATE UNIV,BATON ROUGE,LA 70803. RP KROWNE, CM (reprint author), USN,RES LAB,DIV ELECTR SCI & TECHNOL,MICROWAVE TECHNOL BRANCH,CODE 68503,WASHINGTON,DC 20375, USA. RI Kougianos, Elias/A-9316-2009 NR 25 TC 3 Z9 4 U1 1 U2 1 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0038-1101 J9 SOLID STATE ELECTRON JI Solid-State Electron. PD DEC PY 1995 VL 38 IS 12 BP 1979 EP 1991 DI 10.1016/0038-1101(95)00112-7 PG 13 WC Engineering, Electrical & Electronic; Physics, Applied; Physics, Condensed Matter SC Engineering; Physics GA TC645 UT WOS:A1995TC64500001 ER PT J AU Leahy, SE Murphy, PR Poist, RF AF Leahy, SE Murphy, PR Poist, RF TI Determinants of successful logistical relationships: A third-party provider perspective SO TRANSPORTATION JOURNAL LA English DT Article C1 JOHN CARROLL UNIV,UNIV HTS,OH 44118. IOWA STATE UNIV,AMES,IA 50011. RP Leahy, SE (reprint author), USN,PORTSMOUTH,RI 02871, USA. NR 15 TC 27 Z9 27 U1 0 U2 3 PU AMER SOC TRANSPORTATION LOGISTICS, INC PI LOCK HAVEN PA 216 E CHURCH ST, LOCK HAVEN, PA 17745 SN 0041-1612 J9 TRANSPORT J JI Transp. J. PD WIN PY 1995 VL 35 IS 2 BP 5 EP 13 PG 9 WC Management; Transportation SC Business & Economics; Transportation GA TW598 UT WOS:A1995TW59800001 ER PT J AU SAMPATH, S GREEN, RS CIVIS, DA WILLIAMS, BE KONKOL, PJ AF SAMPATH, S GREEN, RS CIVIS, DA WILLIAMS, BE KONKOL, PJ TI METALLURGICAL MODEL SPEEDS DEVELOPMENT OF GMA WELDING WIRE FOR HSLA STEEL SO WELDING JOURNAL LA English DT Article C1 USN,JOINING CTR,COLUMBUS,OH. BABCOCK & WILCOX INC,LYNCHBURG,VA. RP SAMPATH, S (reprint author), CONCURRENT TECHNOL CORP,JOHNSTOWN,PA, USA. NR 8 TC 6 Z9 6 U1 0 U2 0 PU AMER WELDING SOC PI MIAMI PA PO BOX 351040, MIAMI, FL 33135 SN 0043-2296 J9 WELD J JI Weld. J. PD DEC PY 1995 VL 74 IS 12 BP 69 EP 76 PG 8 WC Metallurgy & Metallurgical Engineering SC Metallurgy & Metallurgical Engineering GA TJ003 UT WOS:A1995TJ00300009 ER PT J AU Barnhart, CM Wieselthier, JE Ephremides, A AF Barnhart, Craig M. Wieselthier, Jeffrey E. Ephremides, Anthony TI Admission-control policies for multihop wireless network SO WIRELESS NETWORKS LA English DT Article AB In this paper, we investigate the admission-control problem for voice traffic in fixed-route circuit-switched wireless networks. We consider coordinate-convex admission-control policies and a "blocked-calls-cleared" mode of operation, in conjunction with the usual assumptions on the voice process statistics. These conditions result in a product-form stationary distribution for the voice state of the system, which facilitates the evaluation of network performance. However, to determine the optimal policy a large state space must be searched. We develop a recursive procedure to accelerate the evaluation of a large number of different admission-control policies, and a descent-search method to reduce significantly the number of policies that must be evaluated in searching for the optimal one. The numerical examples we present indicate that reduced blocking probability (or increased throughput) can be obtained by administering active admission control. The degree of improvement is highest in moderately overloaded traffic conditions, but it is typically small in low-capacity networks (at all loads). However, in applications where the performance measure associates different revenues or costs with the various call types, considerable improvement can be obtained when admission control is used. C1 [Barnhart, Craig M.] USN, Res Lab, Div Informat Technol, Washington, DC 20375 USA. Univ Maryland, Dept Elect Engn, College Pk, MD 20742 USA. Univ Maryland, Inst Syst Res, College Pk, MD 20742 USA. RP Barnhart, CM (reprint author), USN, Res Lab, Div Informat Technol, Washington, DC 20375 USA. EM barhart@itd.nrl.navy.mil; wieselthier@itd.nrl.navy.mil; tony@eng.umd.edu FU DoD HPC Shared Resource Center, Naval Research Laboratory, Washington, D.C. FX This work was supported in part by a grant of HPC time from the DoD HPC Shared Resource Center, Naval Research Laboratory, Washington, D.C., on their Thinking Machines Corp. CM-5E NR 25 TC 22 Z9 22 U1 0 U2 1 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1022-0038 EI 1572-8196 J9 WIREL NETW JI Wirel. Netw. PD DEC PY 1995 VL 1 IS 4 BP 373 EP 387 DI 10.1007/BF01985751 PG 15 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA V20QN UT WOS:000208154600001 ER PT J AU Corson, MS Batsell, SG AF Corson, M. Scott Batsell, Stephen G. TI A Reservation-Based Multicast (RBM) routing protocol for mobile networks: Initial route construction phase SO WIRELESS NETWORKS LA English DT Article AB We propose a combined multicast routing, resource reservation and admission control protocol, termed Reservation- Based Multicast (RBM), that borrows the "Rendezvous Point" or "Core" concept from multicast routing algorithms proposed for the Internet, but which is intended for operation in mobile networks and routes hierarchically-encoded data streams based on user-specified fidelity requirements, real-time delivery thresholds and prevailing network bandwidth constraints. The protocol exhibits the fully distributed operation and receiver-initiated orientation of these proposed algorithms; but, unlike them, the protocol is tightly coupled to a class of underlying, distributed, unicast routing protocols thereby facilitating operation in a dynamic topology. This paper focuses on the initial route construction phase, assumed to occur during a static "snapshot" of the dynamic topology, and is therefore applicable to fixed networks as well, e. g. the Internet. C1 [Corson, M. Scott] Univ Maryland, Inst Syst Res, College Pk, MD 20742 USA. [Batsell, Stephen G.] USN, Res Lab, Div Informat Technol, Washington, DC 20375 USA. RP Corson, MS (reprint author), Univ Maryland, Inst Syst Res, College Pk, MD 20742 USA. EM corson@isr.umd.edu; batsell@itd.nrl.navy.mil FU U.S. Navy and the American Society for Engineering Education FX This work was sponsored by the U.S. Navy and the American Society for Engineering Education under the U.S. Navy's Summer Faculty Research Program NR 38 TC 4 Z9 4 U1 0 U2 0 PU SPRINGER PI DORDRECHT PA VAN GODEWIJCKSTRAAT 30, 3311 GZ DORDRECHT, NETHERLANDS SN 1022-0038 J9 WIREL NETW JI Wirel. Netw. PD DEC PY 1995 VL 1 IS 4 BP 427 EP 450 DI 10.1007/BF01985755 PG 24 WC Computer Science, Information Systems; Engineering, Electrical & Electronic; Telecommunications SC Computer Science; Engineering; Telecommunications GA V20QN UT WOS:000208154600005 ER PT J AU MRSTIK, BJ MCMARR, PJ HUGHES, HL ANC, MJ KRULL, WA AF MRSTIK, BJ MCMARR, PJ HUGHES, HL ANC, MJ KRULL, WA TI IMPROVEMENT IN ELECTRICAL-PROPERTIES OF BURIED SIO2 LAYERS BY HIGH-TEMPERATURE OXIDATION SO APPLIED PHYSICS LETTERS LA English DT Article ID OXIDE AB The density of defects in the buried oxide of implanted oxide silicon-on-insulator material which cause low resistance paths between the substrate and top silicon layer has been greatly reduced by high temperature oxidation. The mechanism for this is the diffusion of oxygen through the top silicon layer to the buried oxide, where it oxidizes chains of silicon atoms. (C) 1995 American Institute of Physics. C1 SFA INC,LANDOVER,MD 20785. IBIS TECHNOL CORP,DANVERS,MA 01923. RP MRSTIK, BJ (reprint author), USN,RES LAB,CODE 6816,WASHINGTON,DC 20375, USA. NR 7 TC 9 Z9 9 U1 0 U2 1 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD NOV 27 PY 1995 VL 67 IS 22 BP 3283 EP 3285 DI 10.1063/1.115221 PG 3 WC Physics, Applied SC Physics GA TF765 UT WOS:A1995TF76500020 ER PT J AU BERTHA, CM VILNER, BJ MATTSON, MV BOWEN, WD BECKETTS, K XU, H ROTHMAN, RB FLIPPENANDERSON, JL RICE, KC AF BERTHA, CM VILNER, BJ MATTSON, MV BOWEN, WD BECKETTS, K XU, H ROTHMAN, RB FLIPPENANDERSON, JL RICE, KC TI (E)-8-BENZYLIDENE DERIVATIVES OF 2-METHYL-5-(3-HYDROXYPHENYL)MORPHANS - HIGHLY SELECTIVE LIGANDS FOR THE SIGMA(2) RECEPTOR SUBTYPE SO JOURNAL OF MEDICINAL CHEMISTRY LA English DT Article ID GUINEA-PIG BRAIN; INDUCED NEURONAL ACTIVATION; OPIOID BINDING-SITES; ANTIPSYCHOTIC-DRUGS; OPIATE RECEPTOR; HIGH-AFFINITY; RAT-BRAIN; AUTORADIOGRAPHIC VISUALIZATION; PHENCYCLIDINE RECEPTOR; IMMUNE-SYSTEMS AB The determination of the structure and function of the sigma receptor subtypes and their physiological role(s) has been impeded by the unavailability of selective ligands. We have developed a new class of sigma subtype selective receptor ligands that are (E)-8-benzylidene derivatives of the synthetic opioid (+/-)-, (+)-, and (-)-2-methyl-5-(3-hydroxyphenyl)morphan-7-one (1). The derivatives can be prepared by reaction of 1, (+)-1, and (-)-1 with the appropriate benzaldehyde under Claisen-Schmidt conditions. Incorporation of substituted (E)-8-benzylidene moieties onto the 7-keto precursor of (+)-2-methyl-5-(3-hydroxyphenyl)morphan, (+)-1, produces compounds (-)-2 through (-)-7 (5.8-32.0 nM, sigma(1)), which have between a 25- and 131-fold increase in affinity for the sigma(1) receptor subtype relative to the keto precursor (+)-1 (K-i 762 nM, sigma(1)). Compound (-)-2 is the most selective of this group (16-fold) for the sigma(1) subtype versus sigma(2). Substitution of an (E)-8-benzylidene moiety onto the 7-keto precursor of(-)-2-methyl-5-(3-hydroxyphenyl)morphan, (-)-1, produces compounds (+)-2-(+)-9 (6.4-52.6 nM, sigma(2)), which have at least a 475-3906-fold increase in affinity for the sigma(2) receptor subtype relative to the keto precursor (-)-1 (K-i = 25 x 10(3) nM). This enhancement of sigma(2) receptor affinity is accompanied by substantial selectivity of all of these dextrorotatory products for the sigma(2) relative to the sigma(1) subtype (32-238-fold), and thus, they are among the most sigma(2) subtype selective compounds currently known. Furthermore, the sigma(1) subtype is highly enantioselective for the levorotatory isomers, (-)-2-(-)-7 (41-1034-fold), whereas the sigma(2) subtype is only somewhat enantioselective for the dextrorotatory isomers, (+)-2-(+)-7 (2.6-9.3-fold). All of these derivatives retain substantial affinity for the mu opioid receptor. Despite the high affinity of the dextrorotatory derivatives for the mu opioid receptor, the high affinity and selectivity for sigma(2) over sigma(1) sites will surely prove beneficial as tools for the delineation of the function and physiological role of sigma(2) receptors. C1 NIDDKD,MED CHEM LAB,BETHESDA,MD 20892. NIDA,ADDICT RES CTR,CLIN PSYCHOPHARMACOL SECT,BALTIMORE,MD 21224. USN,RES LAB,STRUCT MATTER LAB,WASHINGTON,DC 20375. NR 104 TC 13 Z9 15 U1 0 U2 3 PU AMER CHEMICAL SOC PI WASHINGTON PA PO BOX 57136, WASHINGTON, DC 20037-0136 SN 0022-2623 J9 J MED CHEM JI J. Med. Chem. PD NOV 24 PY 1995 VL 38 IS 24 BP 4776 EP 4785 DI 10.1021/jm00024a005 PG 10 WC Chemistry, Medicinal SC Pharmacology & Pharmacy GA TH093 UT WOS:A1995TH09300005 PM 7490727 ER PT J AU TONN, DA BANSAL, R AF TONN, DA BANSAL, R TI TRAVELING-WAVE MICROSTRIP DIPOLE ANTENNAS SO ELECTRONICS LETTERS LA English DT Article DE DIPOLE ANTENNAS; MICROSTRIP ANTENNAS AB While it is a common antenna, the unloaded conducting microstrip dipole suffers from a very limited bandwidth, because it is a resonant structure supporting a standing wave of current. The authors present the characteristics of a microstrip dipole modified to behave like a travelling wave structure. C1 UNIV CONNECTICUT,STORRS,CT 06269. RP TONN, DA (reprint author), USN,CTR UNDERSEA WARFARE,CODE 3413,BLDG 101,39 SMITH ST,NEW LONDON,CT 06320, USA. NR 4 TC 1 Z9 1 U1 1 U2 2 PU IEE-INST ELEC ENG PI HERTS PA MICHAEL FARADAY HOUSE SIX HILLS WAY STEVENAGE, HERTS, ENGLAND SG1 2AY SN 0013-5194 J9 ELECTRON LETT JI Electron. Lett. PD NOV 23 PY 1995 VL 31 IS 24 BP 2064 EP 2066 DI 10.1049/el:19951409 PG 3 WC Engineering, Electrical & Electronic SC Engineering GA TJ614 UT WOS:A1995TJ61400006 ER PT J AU WENG, NP LEVINE, BL JUNE, CH HODES, RJ AF WENG, NP LEVINE, BL JUNE, CH HODES, RJ TI HUMAN NAIVE AND MEMORY T-LYMPHOCYTES DIFFER IN TELOMERIC LENGTH AND REPLICATIVE POTENTIAL SO PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA LA English DT Article ID HUMAN FIBROBLASTS; CELLS; SUBSETS AB The present study has assessed the replicative history and the residual replicative potential of human naive and memory T cells, Telomeres are unique terminal chromosomal structures whose length has been shown to decrease with cell division in vitro and with increased age in vivo for human somatic cells, We therefore assessed telomere length as a measure of the in vivo replicative history of naive and memory human T cells. Telomeric terminal restriction fragments were found to be 1.4 +/- 0.1 kb longer in CD4(+) naive T cells than in memory cells from the same donors, a relationship that remained constant over a wide range of donor age. These findings suggest that the differentiation of memory cells from naive precursors occurs with substantial clonal expansion and that the magnitude of this expansion is, on average, similar over a wide range of age. In addition, when replicative potential was assessed in vitro, it was found that the capacity of naive cells for cell division,vas 128-fold greater as measured in mean population doublings than the capacity of memory cells from the same individuals. Human CD4(+) naive and memory cells thus differ in in vivo replicative history, as reflected in telomeric length, and in their residual replicative capacity. C1 NIA,BETHESDA,MD 20892. USN,MED RES INST,IMMUNE CELL BIOL PROGRAM,BETHESDA,MD 20889. RP WENG, NP (reprint author), NCI,EXPTL IMMUNOL BRANCH,BETHESDA,MD 20892, USA. RI Levine, Bruce/D-1688-2009; Slagboom, P. Eline/R-4790-2016 OI Slagboom, P. Eline/0000-0002-2875-4723 NR 23 TC 306 Z9 312 U1 1 U2 2 PU NATL ACAD SCIENCES PI WASHINGTON PA 2101 CONSTITUTION AVE NW, WASHINGTON, DC 20418 SN 0027-8424 J9 P NATL ACAD SCI USA JI Proc. Natl. Acad. Sci. U. S. A. PD NOV 21 PY 1995 VL 92 IS 24 BP 11091 EP 11094 DI 10.1073/pnas.92.24.11091 PG 4 WC Multidisciplinary Sciences SC Science & Technology - Other Topics GA TF891 UT WOS:A1995TF89100056 PM 7479943 ER PT J AU WADKINS, RM GOLDEN, JP LIGLER, FS AF WADKINS, RM GOLDEN, JP LIGLER, FS TI CALIBRATION OF BIOSENSOR RESPONSE USING SIMULTANEOUS EVANESCENT-WAVE EXCITATION OF CYANINE-LABELED CAPTURE ANTIBODIES AND ANTIGENS SO ANALYTICAL BIOCHEMISTRY LA English DT Article ID SUCCINIMIDYL ESTERS; REAGENTS AB Fiber optic biosensors have proven their ability to detect antigens rapidly in a variety of environmental and clinical samples. These biosensors are based on the technique of covalently linking antibodies to the core of an optical fiber and detecting antigen binding via measurement of fluorescence induced in the evanescent wave. One problem associated with these biosensors is the fiber-to fiber variability in measured signal. We have addressed this problem by labeling a portion of the immobilized capture antibody with the fluorescent cyanine dye Cy5.5 (emission lambda(max) = 696 nm). The antigen was then labeled with fluorescent Cy5 (emission lambda(max) = 668 nm). Both fluorophores were excited by 635-nm light, and their emission was collected using both a fiber optic spectrometer and a biosensor optimized to collect fluorescence at two wavelengths. The fluorescence from the Cy5.5-labeled capture antibody served as a calibration signal for each fiber and corrected for differences in optics, fiber defects, and varying amounts of capture antibody present on the fiber. Our data show that normalizing the signal measured from Cy5-labeled antigen binding to the Cy5.5 signal provides a standardization process for greatly reducing signal variance among individual fibers. (C) 1995 Academic Press, Inc. C1 USN,RES LAB,CTR BIOMOLEC SCI & ENGN,WASHINGTON,DC 20375. NR 16 TC 17 Z9 18 U1 0 U2 1 PU ACADEMIC PRESS INC JNL-COMP SUBSCRIPTIONS PI SAN DIEGO PA 525B STREET, SUITE 1900, SAN DIEGO, CA 92101-4495 SN 0003-2697 J9 ANAL BIOCHEM JI Anal. Biochem. PD NOV 20 PY 1995 VL 232 IS 1 BP 73 EP 78 DI 10.1006/abio.1995.9958 PG 6 WC Biochemical Research Methods; Biochemistry & Molecular Biology; Chemistry, Analytical SC Biochemistry & Molecular Biology; Chemistry GA TG921 UT WOS:A1995TG92100011 PM 8600836 ER PT J AU BALCHIN, GA SMITH, LM ABAD, H JONKER, BT AF BALCHIN, GA SMITH, LM ABAD, H JONKER, BT TI MOTT IONIZATION OF EXCITONS IN N-TYPE ZN1-XMNXSE EPILAYERS SO APPLIED PHYSICS LETTERS LA English DT Article ID ELECTRON AB Recently, the first controlled n-type doping of Zn1-xMnxSe epilayers was reported. Using time-resolved photoluminescence we show that exciton ionization in the moderately doped samples occurs at a significantly lower temperature (50 K) than in undoped material (180 K). This behavior is consistent with Mott ionization of excitons from the increased majority carrier density at higher temperatures. The density and temperature at which the ionization occurs are estimated using calculations of the Mott density and the density-dependent exciton binding energy. No excitons are observed down to 2 K in the samples, which were doped at the highest densities, suggesting that these samples were degenerately doped. (C) 1995 American Institute of Physics. C1 USN,RES LAB,WASHINGTON,DC 20375. RP BALCHIN, GA (reprint author), UNIV CINCINNATI,DEPT PHYS,CINCINNATI,OH 45221, USA. RI Smith, Leigh/A-1071-2009 OI Smith, Leigh/0000-0002-3950-1713 NR 6 TC 0 Z9 0 U1 0 U2 0 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD NOV 20 PY 1995 VL 67 IS 21 BP 3150 EP 3152 DI 10.1063/1.115145 PG 3 WC Physics, Applied SC Physics GA TF574 UT WOS:A1995TF57400033 ER PT J AU LINDLE, JR MEYER, JR HOFFMAN, CA BARTOLI, FJ TURNER, GW CHOI, HK AF LINDLE, JR MEYER, JR HOFFMAN, CA BARTOLI, FJ TURNER, GW CHOI, HK TI AUGER LIFETIME IN INAS, INASSB, AND INASSB-INALASSB QUANTUM-WELLS SO APPLIED PHYSICS LETTERS LA English DT Article ID DIRECT-GAP SEMICONDUCTORS; RECOMBINATION AB The intensity-dependent photoconductive response to 2.06 mu m excitation has been used to determine Shockley-Read and Auger lifetimes for InAs, InAs0.91Sb0.09, and an InAs0.85 Sb-0.15-InAlAsSb multiple quantum well. The Auger rate at 77 K correlates with the proximity to resonance between the energy gap and the split-off gap. Thus the Auger coefficient in the alloy decreases with decreasing temperature, whereas that in the quantum well increases by nearly a factor of 5 between 300 and 77 K. (C) 1995 American Institute of Physics. C1 MIT,LINCOLN LAB,LEXINGTON,MA 02173. RP LINDLE, JR (reprint author), USN,RES LAB,CODE 5610,WASHINGTON,DC 20375, USA. RI Lindle, James/A-9426-2009 NR 23 TC 46 Z9 46 U1 1 U2 11 PU AMER INST PHYSICS PI WOODBURY PA CIRCULATION FULFILLMENT DIV, 500 SUNNYSIDE BLVD, WOODBURY, NY 11797-2999 SN 0003-6951 J9 APPL PHYS LETT JI Appl. Phys. Lett. PD NOV 20 PY 1995 VL 67 IS 21 BP 3153 EP 3155 DI 10.1063/1.115146 PG 3 WC Physics, Applied SC Physics GA TF574 UT WOS:A1995TF57400034 ER PT J AU ASCHWANDEN, MJ LIM, J GARY, DE KLIMCHUK, JA AF ASCHWANDEN, MJ LIM, J GARY, DE KLIMCHUK, JA TI SOLAR ROTATION STEREOSCOPY IN MICROWAVES SO ASTROPHYSICAL JOURNAL LA English DT Article DE SUN, ACTIVITY; SUN, CORONA; SUN, RADIO RADIATION; SUN, ROTATION ID 1991 JULY 11; EMISSION; ULTRAVIOLET; SUNSPOTS; ECLIPSE; CORONA AB We present here the first stereoscopic altitude measurements of active region sources observed at microwave frequencies (10-14 GHz). The active region NOAA 7128 was observed with the Owens Valley Radio Observatory (OVRO) on 1992 April 13, 14, 15, and 16 as it passed through the central meridian. From white-light data of the underlying sunspot we determined the rotation rate of the active region, which was found to have a relative motion of dL/dt = +0 degrees 240 day(-1) with respect to the standard photospheric differential rotation rate. Based on this rotation rate we determine for the microwave sources stereoscopic altitudes of 3.3-11.0 Mm above the photosphere. The altitude spectrum h(nu) of the right circular polarization (RCP) main source shows a discontinuity at 12 GHz and can be satisfactorily fitted with a dipole model with a transition from the second to the third harmonic level at 12 GHz. The dominance of the third harmonic for frequencies above 12 GHz occurs because the second harmonic level drops below the transition region, at a height of 2.6 +/- 0.6 Mm according to the microwave data. The altitude spectrum h(nu) serves also to invert the temperature profile T(h) from the optically thick parts of the radio brightness temperature spectrum T-B(nu[h]). The microwave emission in both circular polarizations can be modeled with gyroresonance emission, with x-mode for RCP and o-mode in LCP, with the same harmonics at each frequency, but different emission angles in both modes. The contributions from free-free emission are negligible in both polarizations, based on the peak emission measure of EM approximate to 6 x 10(28) cm(-5) observed in soft X-rays by Yohkoh/SXT. This study demonstrates that the height dependence of the coronal magnetic field B(h) and the plasma temperature T(h) in an active region can be inverted from the stereoscopic altitude spectra h(nu) and the observed brightness temperature spectra T-B(nu). C1 CALTECH,PASADENA,CA 91125. USN,RES LAB,WASHINGTON,DC 20375. RP ASCHWANDEN, MJ (reprint author), UNIV MARYLAND,DEPT ASTRON,COLLEGE PK,MD 20742, USA. RI Klimchuk, James/D-1041-2012; OI Klimchuk, James/0000-0003-2255-0305; Gary, Dale/0000-0003-2520-8396 NR 23 TC 38 Z9 41 U1 0 U2 0 PU UNIV CHICAGO PRESS PI CHICAGO PA 5720 S WOODLAWN AVE, CHICAGO, IL 60637 SN 0004-637X J9 ASTROPHYS J JI Astrophys. J. PD NOV 20 PY 1995 VL 454 IS 1 BP 512 EP 521 DI 10.1086/176502 PN 1 PG 10 WC Astronomy & Astrophysics SC Astronomy & Astrophysics GA TD743 UT WOS:A1995TD74300044 ER PT J AU DYKA, CT INGEL, RP AF DYKA, CT INGEL, RP TI AN APPROACH FOR TENSION INSTABILITY IN SMOOTHED PARTICLE HYDRODYNAMICS (SPH) SO COMPUTERS & STRUCTURES LA English DT Article AB Smoothed particle hydrodynamics (SPH) has the potential to be an important method for structural analysis. However, the SPH method is currently plagued by tension instability. In this work, a new unconventional approach is introduced, in which the stresses are calculated at points other than the SPH nodes, to address this difficulty. This algorithm is implemented into a one-dimensional (1D) program called SPH1D. In addition, objective stress rate calculations are discussed and specialized to 1D applications. The results from applying the unconventional approach to a simple bar are very encouraging. The bar holds together in tension and compares quite well to a finite element analysis. C1 USN,RES LAB,WASHINGTON,DC 20375. RP DYKA, CT (reprint author), GEOCENTERS INC,10903 INDIAN HEAD HIGHWAY,FT WASHINGTON,MD 20744, USA. NR 12 TC 84 Z9 96 U1 0 U2 6 PU PERGAMON-ELSEVIER SCIENCE LTD PI OXFORD PA THE BOULEVARD, LANGFORD LANE, KIDLINGTON, OXFORD, ENGLAND OX5 1GB SN 0045-7949 J9 COMPUT STRUCT JI Comput. Struct. PD NOV 17 PY 1995 VL 57 IS 4 BP 573 EP 580 DI 10.1016/0045-7949(95)00059-P PG 8 WC Computer Science, Interdisciplinary Applications; Engineering, Civil SC Computer Science; Engineering GA RT077 UT WOS:A1995RT07700002 ER PT J AU DEMARCO, PJ KEATING, RM AF DEMARCO, PJ KEATING, RM TI CHOLESTEROL CRYSTALS SO NEW ENGLAND JOURNAL OF MEDICINE LA English DT Note RP DEMARCO, PJ (reprint author), USN,MED CTR,SAN DIEGO,CA 92134, USA. NR 0 TC 1 Z9 1 U1 0 U2 0 PU MASS MEDICAL SOC PI BOSTON PA 10 SHATTUCK, BOSTON, MA 02115 SN 0028-4793 J9 NEW ENGL J MED JI N. Engl. J. Med. PD NOV 16 PY 1995 VL 333 IS 20 BP 1325 EP 1325 PG 1 WC Medicine, General & Internal SC General & Internal Medicine GA TE365 UT WOS:A1995TE36500005 PM 7566024 ER PT J AU Izraeli, S Bertness, VL Mani, KM Aplan, PD Kirsch, IR AF Izraeli, S Bertness, VL Mani, KM Aplan, PD Kirsch, IR TI SIL, the most frequent ''dysregulator'' of SCL (TAL1) in T-cell acute lymphoblastic leukemia (T-ALL), is an immediate early response gene expressed in proliferating cells. SO BLOOD LA English DT Meeting Abstract C1 USN,MED ONCOL BRANCH,NATL CANC INST,BETHESDA,MD. ROSWELL PK CANC INST,DEPT PEDIAT,BUFFALO,NY 14263. ROSWELL PK CANC INST,DEPT MOLEC MED,BUFFALO,NY 14263. RI Aplan, Peter/K-9064-2016 NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 124 EP 124 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91000124 ER PT J AU Bergsagel, PL Chesi, M Brents, LA Kuehl, WM AF Bergsagel, PL Chesi, M Brents, LA Kuehl, WM TI Dysregulation of C-MYC in multiple myeloma: Selective expression of one allele. SO BLOOD LA English DT Meeting Abstract C1 CORNELL UNIV,COLL MED,DIV HEMATOL ONCOL,NEW YORK,NY. USN,MED ONCOL BRANCH,NCI,BETHESDA,MD. NR 0 TC 0 Z9 0 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 222 EP 222 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91000223 ER PT J AU Bergsagel, PL Chesi, M Brents, LA Kuehl, WM AF Bergsagel, PL Chesi, M Brents, LA Kuehl, WM TI Translocations into IgH switch regions: The genetic hallmark of multiple myeloma. SO BLOOD LA English DT Meeting Abstract C1 CORNELL UNIV,COLL MED,DIV HEMATOL ONCOL,NEW YORK,NY. USN,MED ONCOL BRANCH,NCI,BETHESDA,MD. NR 0 TC 6 Z9 7 U1 0 U2 0 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 223 EP 223 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91000224 ER PT J AU Saini, AA Davis, TA Oke, V Lee, KP AF Saini, AA Davis, TA Oke, V Lee, KP TI The terminal carbohydrate structures sialyl-Lewis x and Lewis x on primitive hematopoietic progenitor cells mediates adhesion to hematopoietic supportive endothelial stroma. SO BLOOD LA English DT Meeting Abstract C1 USN,MED RES INST,BETHESDA,MD. NR 0 TC 0 Z9 0 U1 0 U2 1 PU W B SAUNDERS CO PI PHILADELPHIA PA INDEPENDENCE SQUARE WEST CURTIS CENTER, STE 300, PHILADELPHIA, PA 19106-3399 SN 0006-4971 J9 BLOOD JI Blood PD NOV 15 PY 1995 VL 86 IS 10 SU 1 BP 1216 EP 1216 PG 1 WC Hematology SC Hematology GA TH910 UT WOS:A1995TH91001218 ER EF