Abstract:The deposition of a thermally conductive, insulating film of diamond onto high power electronic devices is important for packaging applications for corrosive environments, or high power applications where coolants are used for thermal management. Deposition of diamond will require a basic… more
Abstract:SILICON CARBIDE IS A LEADING NEW CANDIDATE FOR MIRROR BLANKS BECAUSE OF ITS HIGH STIFFNESS, RELATIVELY HIGH THERMAL CONDUCTIVITY, AND ABRASION RESISTANCE. THE BASE MATERIAL CONTAINS PORES OR LARGE GRAINS, WHICH MAKE IT DIFFICULT TO PROVIDE A SMOOTH FRONT SURFACE. RESEARCHERS HAVE DEVELOPED A PROCESS… more
Abstract:We propose to demonstrate that eye slaved cursor control, using an eye tracker device, is a viable and potentially more valuable man-machine interface than current manual cursor control techniques. This control technique can provide potentially higher bandwidth cursor control, while minimizing pilot… more
Abstract:COMPOSITE MATERIALS HAVE BEEN DEVELOPED THAT POTENTIALLY YIELD A THERMAL CONDUCTIVITY OF UP TO 1000 W/M-K IN UNIAXIAL ORIENTATION. THIS YIELD IS SUFFICIENTLY HIGH TO ALLOW MULTIDIMENSIONAL DESIGNS THAT MEET OFF-AXIS THERMAL AND MECHANICAL PROPERTY CRITERIA AND MATCH THE COEFFICIENT OF THERMAL… more
Abstract:AN INNOVATIVE INTEGRAL DIELECTRIC HEAT SINK MATERIAL, DIAMOND/CARBON/CARBON COMPOSITE, IS PROPOSED IN THIS PHASE I RESEARCH FOR THE USE IN FUTURE ADVANCED ELECTRONIC DEVICES. CARBONE/CARBONE COMPOSITE HAS A HIGHER THERMAL CONDUCTIVITY AND LOWER DENSITY, AND THEREFORE A HIGHER SPECIFIC THERMAL… more
Abstract:IT IS PROPOSED THAT ADVANCED ARCJET ENGINES CAN BE DEVELOPED USING KNOWN PRINCIPLES FOR ADVANCED NOZZLE DESIGN, ARC ATTACHMENT, INCREASED CHAMBER EFFECTIVE TEMPERATURE AND SO FORTH. SUCH STUDIES ARE PARTIALLY SUPPORTED BY EXPERIMENTAL RESULTS BY RESEARCHERS IN THE RUSSIAN FEDERATION. YET THESE… more
Abstract:BIMODAL REACTORS FOR POWER AND PROPULSION HAVE LONG BEEN OF INTEREST FOR MISSIONS REQUIRINGS BOTH HIGH POWER AND LARGE DELTA-V; E.G., HIGH ALTITUDE, GEOSYNCHRONOUS AND PLANETARY MISSIONS. IT PROPULSIVE THRUST AND ELECTRIC POWER CAN BOTH BE SUPPLIED FROM THE SAME UNIT, A LARGE POTENTIAL SAVINGS CAN… more
Abstract:Very compact cathode ray tubes could be fabricated if high voltages presently required for normal operation could be reduced by a factor of ten. This requires a very effective cold cathode. A cold cathode capable of delivering several hundred amps per square centimeter (under ambient conditions… more
Abstract:IT IS WELL-ESTABLISHED THAT POOR THERMAL MANAGEMENT IS A LIMITING FACTOR IN RELIABILITY AND LIFETIME OF ELECTRONIC COMPONENTS IN ADVANCED ELECTRONIC SUBSTRATES OR HEAT SINKS. FUNDAMENTAL PROCESSES FOR PRODUCING A NOVEL DIAMOND FIBER WITH ENHANCED PHYSICAL PROPERTIES ARE BEING STUDIED. THE FIBERS ARE… more
Abstract:IN PHASE I AN IN-SIT METHOD IS PRESENTED FOR ELECTRICALLY HEATING EMITTERS OF MULTI-CELL IN-CORE THERMIONIC FUEL ELEMENTS (TFES). NUCLEAR HEATING IS NOT REQUIRED. THIS IS ACCOMPLISHED BY SUPPLYING PULSES OF ELECTRIC CURRENT TO MOMENTARILY BIAS THE COLLECTORS IN THE TFE WI A SEVERAL-VOLT NEGATIVE… more
Abstract:BERYLLIUM (BE) IS A CANDIDATE MATERIAL FOR DIVERTERS IN NUCLEAR FUSION REACTORS. HOWEVER, THE USE OF BE IS LIMITED BY ITS MODERATE THERMAL CONDUCTIVITY (218 W/M-K) AND BRITTLENESS, BOTH OF WHICH RESULT IN A LOW THERMAL SHOCK RESISTANCE. THE MODERATE THERMAL CONDUCTIVITY AND POOR MECHANICAL STRENGTH… more
Abstract:An approach is presented to solve both the data fusioin problem, and the space object model building requirement for the Air Force Phillips Laboratory. Artificial neural network (ANN) technology provides a number of tools that form the basis of this proposal and the foundtion for the solution to the… more
Abstract:LOCAL AGENCIES AND COUNTY GOVERNMENTS ARE CONTINUALLY IN NEED OF DRUG ABUSE PREVALENCE ESTIMATES FOR PLANNING AND RESOURCE ALLOCATION. SEVERAL MATHEMATICAL MODELS EXIST, SUCH AS, MULTIPLE RECAPTURE CENSUSES AND SYNTHETIC ESTIMATORMETHODS. THESE MODELS CAN BE ADAPTED FOR USE WITH "STATE-OF-THE-ART"… more
Abstract:ADVERSE DRUG REACTIONS ACCOUNT FOR A SIGNIFICANT PROPORTION OF ALL U. S. HOSPITALIZATIONS; ESTIMATES RANGE AS HIGH AS 18 PERCENT OF HOSPITAL ADMISSIONS. THE PHASE I OBJECTIVE IS CREATION OF A MICROCOMPUTER-BASED PROTOTYPE FOR PHYSICIANS AND PHARMACISTS THAT WOULD USE INTEGRATED-CIRCUIT CARDS (SMART… more
Abstract:This project addresses the development of software technologies to collect, analyze, and display test data from adaptive optics control systems. Innovative technologies are devised which allow efficient processing of data from multiple-input/multiple-output (MIMO) systems involving deformable… more
Abstract:There is a need for a reliable High Energy Laser Wavefront Analyzer (HELWA) to be used for beam quality testing at the Army's High Energy Laser Systems Test Facility (HELSTF). Accurate HEL wavefront measurements are critical to HEL device performance evaluation. Current devices are inflexible and… more
Abstract:DUAL ENERGY IMAGING HAS THE POTENTIAL TO ADD NEW AND POWERFUL DIAGNOSTIC CAPABILITIES TO A MEDICAL X-RAY EXAMINATION. UNLIKE AN ORDINARY X-RAY IMAGE, DUAL ENERGY IMAGE DATA CAN BE PROCESSED TO GIVE INFORMATION ABOUT THE CHEMICAL COMPOSITION OF BODY TISSUES. THIS NEW INFORMATION CAN BE USED, FOR… more
Abstract:CURRENT COROPUTER ANALYSIS OF BUBBLE-SUBMERGED STRUCTURE INTERACTION, DUE TO CONVENTIONAL WEAPONS, IS EXTREMELY RESOURCE INTENSIVE. THEREFORE, IT IS VERY DIFFICULT TO REPLACE FULL SCALE LIVE FIRE TESTING OF SUBMERGED STRUCTURE WITH SCALE TESTING OF SUBMERGED STRUCTURES AND COMPUTER ANALYSIS. THE… more
Abstract:A new method for silencing internal machinery generated torpedo noise is proposed. This innovative solution to the problem has the added capabilites of: controlling on a wavevector basis the acoustic signal radiated by the torpedo and simulation of boundary layer excitation on a torpedo hull. The… more
Abstract:DISEASE CONTROL, A MAJOR PROBLEM IN THE AQUACULTURE INDUSTRY, REQUIRES ADMINISTRATION OF PHARMACEUTICALS TO WHOLE POPULATIONS OF FISH. AVAILABLE MODES OF DRUG DELIVERY, (ORAL, IMMERSION OR INJECTION) ARE INEFFICIENT OR NOT PRACTICAL ON A LARGE SCALE. OUR OBJECTIVE IS TO DEVELOP AN EFFICIENT… more
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