Award Data

COMMERCIAL AND GOVERNMENT SPACE TRANSPORTATION SYSTEMS DEPEND ON GROUND SUPPORT FOR NAVIGATION. THE GROUND SOLUTION CAN BE COSTLY AND MAY PROVIDE LESS ACCURACY THAN NEEDED. A GPS-BASED REAL-TIME AUTONOMOUS SPACECRAFT NAVIGATION SYSTEM IS PROPOSED. AN ALGORITHM WILL BE DEVELOPED WHICH COMBINES GPS-DERIVED POINT POSITION ESTIMATES WITH A PROPAGATED A PRIORI POSITION ESTIMATE. THE POINT POSITIONS ARE ...

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BY COUPLING AN ELECTRON TRANSPARENT THIN FILM WINDOW TO AN ELECTRON GUN IT IS NOW POSSIBLE TO MAKE FREE STANDING ELECTRON SOURCES (BULBS) THAT OPERATE AT MODEST VOLTAGES (

ARTIFICIAL INTELLIGENCE/EXPERT SYSTEM TECHNIQUES HAVE DEMONSTRATED THE ABILITY TO ADDRESS COMPLEX REASONING TASKS REQUIRED FOR PROCESS PLANNING. FEATURE-BASED DESIGN THEORY AND PRELIMINARY EFFORTS HAVE SHOWN THE POTENTIAL OF PROVIDING A FUNDAMENTAL MODEL FOR CAPTURE AND MANIPULATION OF DESIGN KNOWLEDGE. HOWEVER, THE TWO TECHNOLOGIES HAVE NOT BEEN SUFFICIENTLY INTEGRATED TO ALLOW DESIGN FEATURES TO ...

COMPACT SOFTWARE PROPOSES TO DEVELOP PHYSICS-BASED MESFET, HEMT AND HBT MODELS AND THEN INTEGRATE THEM INTO OUR COMMERCIAL MICROWAVE NONLINEAR CIRCUIT SIMULATOR, "MICROWAVE HARMONICA." EXISTING EXTRACTION BASED MODELS SUCH AS THE MODIFIED MATERKA AND CURTICE MODELS ARE BASED ON MICROWAVE MEASUREMENT INFORMATION. THE USE OF PHYSICS OR PROCESS-BASED MODELS COMPLETES THE ANALYSIS CHAIN BY LINKINGPROC ...

THE EPITAXIAL GROWTH OF HIGH QUALITY WIDE BANDGAP II-VI HETEROSTRUCTURES WILL BE INVESTIGATED. THE RECENT DEMONSTRATION OF BLUE LASERS IN ZNSE BASED MATERIALS HAS REINVIGORATED INTEREST IN THE II-VI WIDE BANDGAP MATERIALS AS LIGHT EMITTERS. IT IS ENVISIONED THAT THESE MATERIALS WILL RAPIDLY REPLACE THE MUCH LESS EFFICIENT SIC BASED BLUE LEDS. WE PRESENTLY HAVE A FUNDED MATERIALS EFFORT IN ZNSE BAS ...

A NEED EXISTS TO MONITOR VIBRATION IN HIGHWAY BRIDGES. IT IS DESIRABLE TO MONITOR MANY POINTS ON THE BRIDGE. THE CURRENT PROBLEM IS THAT SENSORS MUST BE WIRED TO A CENTRAL LOCATION. WIRE IS DIFFICULT TO INSTALL AND TO MOVE. THE SOLUTION IS TO COLLECT SENSOR DATA BY RADIO. A SYSTEM EXISTS THAT ELIMINATES WIRE. IT GATHERS SENSOR DATA TO A CENTRAL LOCATION BY RADIO. THE SYSTEM'S UNIQUE FEATURE IS THA ...

THE PRIMARY GOAL OF THIS PROJECT IS TO DEVELOP AND DEMONSTRATE A SIMULATION/FACTORY CONTROL CAPABILITY TO (1) SIMULATE PRODUCTS, PROCESSES, AND FACTORY CONFIGURATIONS AT MULTIPLE LEVELS OF ABSTRACTION, (2) PROVIDE FINE GRAINED ANALYSIS OF PRODUCT AND PROCESS DESIGNS, AND (3) PROVIDE A MODEL DRIVEN FACTORY CONTROL ARCHITECTURE SO THAT THE MODELS EXECUTED IN THE SIMULATION STUDIES CAN BE DIRECTLY US ...

FUEL CELLS OPERATING IN AQUEOUS ELETROLYTES (BELOW 200¿C, DEPENDING ON THE CHOSEN ELECTROLYTE TECHNOLOGY) NORMALLY OPERATE ON HYDROGEN FUEL AND OXYGEN (OR AIR) AS THE OXIDANT. HIGH-PERFORMANCE FUEL CELL ELECTRODES REQUIRE HIGH CATALYST SURFACE AREAS, GOOD ELECTRONIC CONDUCTIVITIES AND BROAD REACTION ZONES, DEFINED BY THE CONTACT AREA BETWEEN THE CATALYST, THE GAS PHASE REACTANT AND THE ELECTROLYT ...

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