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16,901 to 16,910 of 18,184 Results
Indian Ocean from Altimetry Assimilated into a Shallow-Water Model
Nov 1, 1993
Perigaud, C.; Rogel, P.; Greiner, E., 1993, "Indian Ocean from Altimetry Assimilated into a Shallow-Water Model", https://hdl.handle.net/2014/35962, Toulouse, France, JPL Open Repository
No abstract provided
Evaluation of the Improvement in the Figure of Merit of Bi_2Te_3-Based Alloys with Addition of Ultrafine Scattering Centers
Nov 1, 1993
Fleurial, Jean-Pierre, 1993, "Evaluation of the Improvement in the Figure of Merit of Bi_2Te_3-Based Alloys with Addition of Ultrafine Scattering Centers", https://hdl.handle.net/2014/36311, ['International Thermoelectric Society, Thermoelectrics', 'Yokohama, Japan'], JPL Open Repository
The addition of ultrafine scattering centers into Bi_2Te_3-based materials and their impact on the thermal and electrical transport properties in a 200-500 K temperature range are discussed. Based on previous theoretical efforts, the resulting improvements in the figure of merit...
Design and Control of the MESUR/Pathfinder Microrover
Nov 1, 1993
Stone, Henry W., 1993, "Design and Control of the MESUR/Pathfinder Microrover", https://hdl.handle.net/2014/35684, Tokyo, Japan, JPL Open Repository
The use of unmanned robotic vehicles to assist in the exploration of Mars and other planets has been of interest to the National Aeronautics and Space Administration (NASA) for several decades and has been the focus of an ongoing research program at the Jet Propulsion Laboratory...
Thermal Conductivity Reduction in P-Type Si<sub> 80</sub>Ge<sub> 20</sub>Alloys Due to Ultrafine Insulating Particulates
Nov 1, 1993
Vandersande, J.; Fleurial, J-P.; Scoville, N.; Rolfe, J., 1993, "Thermal Conductivity Reduction in P-Type Si 80Ge 20Alloys Due to Ultrafine Insulating Particulates", https://hdl.handle.net/2014/36521, ['International Thermoelectric Society', 'Yokohama, Japan'], JPL Open Repository
The key to improving the figure of merit of thermoelectric alloys in the temperature range of 300-1000 C is to reduce the thermal conductivity.
Power Optimization in Logic Isomers
Nov 1, 1993
Panwar, R.; Rennels, D.; Alkalaj, L., 1993, "Power Optimization in Logic Isomers", https://hdl.handle.net/2014/35501, Albuquerque, New Mexico, USA, JPL Open Repository
No abstract provided
Optimization of Hot-Pressed n-Type SiGe/GaP and p-Type SiGe/B Thermoelectric Materials
Nov 1, 1993
Fleurial, Jean-Pierre; Vandersande, Jan; Scoville, Nancy; Bajgar, Clara; Rolfe, Jon, 1993, "Optimization of Hot-Pressed n-Type SiGe/GaP and p-Type SiGe/B Thermoelectric Materials", https://hdl.handle.net/2014/36352, ['International Thermoelectric Society', 'Yokohama, Japan'], JPL Open Repository
A comprehensive experimental and theoretical work has been conducted in order to optimize the thermoelectric properties of Si_(80)Ge_(20) materials and reach the goal of a combined figure of merit value of 0.85x10^(-3) K^(-1) averaged over a 600-1000 C temperature range. Improvem...
Spur-Reduced Digital Sinusoid Generation Using Higher-Order Phase Dithering
Nov 1, 1993
Flanagan, M.; Zimmerman, G., 1993, "Spur-Reduced Digital Sinusoid Generation Using Higher-Order Phase Dithering", https://hdl.handle.net/2014/36557, Pacific Grove, California, USA, JPL Open Repository
A higher-order phase dithering technique that reduces the complexity of digital sinusoid generation is presented and analyzed. Mth order phase dithering denotes the addition of M independent, uniform variates to the sinusoid phase prior to word-length reduction. Spurious magnitud...
Status of Frequency and Time Support for NASA Programs
Nov 1, 1993
Huhnle, P. F.; Kushmeider, P. J.; Wardrip, S. C., 1993, "Status of Frequency and Time Support for NASA Programs", https://hdl.handle.net/2014/36554, Marina del Rey, California, USA, JPL Open Repository
(view graphs)
A Synthesis Approach to the Design of Oversampled Data Converters
Nov 1, 1993
Flanagan, M., 1993, "A Synthesis Approach to the Design of Oversampled Data Converters", https://hdl.handle.net/2014/36556, ['IEEE Computer Society, Conference on Signals, Systems and Computers', 'Pacific Grove, California, USA'], JPL Open Repository
A synthesis approach to the generation of a quantized sequence based on an oversampled input sequence is presented.
Surfactant-Assisted Coal Liquefaction
Nov 1, 1993
Hickey, Gregory S.; Sharma, Pramod K., 1993, "Surfactant-Assisted Coal Liquefaction", https://hdl.handle.net/2014/35990, ['American Institute of Chemical Engineers: Annual Fall Meeting', 'St. Louis, Missouri'], JPL Open Repository
Obtaining liquid fuels from coal which are economically competitive with those obtained from petroleum based sources is a significant challenge for the researcher as well as the chemical industry. Presently, the economics of coal liquefaction are not favorable because of relative...
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