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THIS PROJECT INVOLVES THE DEVELOPMENT OF A NEW TECHNIQUE FOR THE GENERATION OF COMPLEX THREE-DIMENSIONAL STRUCTURES DIRECTLY FROM A CAD/CAM DATABASE WITHOUT THE NEED FOR PRELIMINARY PROCESSES (MOLDS) OR SUBSEQUENT MACHINING (THE PARTS ARE FABRICATED TO NET SHAPE). THE INNOVATION IS TO USE INDEPENDENTLY TARGETED PARTICLES OF METAL OR COMPOSITE METAL TO BUILD STRUCTURES UNDER COMPUTER CONTROL IN MUC ...

THE DIGITAL SIGNAL PROCESSING (DSP) INDUSTRY SUPPLIES ESSENTIAL TOOLS AND TECHNOLOGY TO A HOST OF DEFENSE AND CIVILIAN END-USERS. DSP PRODUCTS ARE FOUND IN MANY FIELDS INCLUDING COMMUNICATIONS, AUDIO, VIDEO, AUTOMATION, GEOPHYSICAL, MEDICAL, AND RADAR/SONAR APPLICATIONS. HOWEVER, MANY CRITICALLY IMPORTANT PROBLEMS CANNOT BE SERVEDBY THIS INDUSTRY DUE TO CURRENT COMPUTATIONAL LIMITATIONS OFDSP HARD ...

THE FEASIBILITY OF USING A CONVENTIONAL 3-CUP ANEMOMETER AND A HEATED THERMISTOR TO OBTAIN WIND SPEED AND WIND DIRECTION IS PROPOSED. THE TECHNIQUE ONLY REQUIRESKNOWLEDGE OF MONITORING THE ROTATION RATE OF THE ANEMOMETER AND DETERMINING THE PEAK RESPONSE OF A HEATED THERMISTOR WHICH IS EXPOSED TO THE FLOW ONCE WITH EACH REVOLUTION OF THE CUP ANEMOMETER VIA A SENSING PORT. THE TECHNIQUE DOES NOT RE ...

RESEARCH ON AN ALTERNATE MATERIAL, ANHYDRITE CALCIUM SULFATE, FOR USE AS CULTCH IN CONSTRUCTING SEED BEDS AND ARTIFICIAL OYSTER REEFS IS HEREIN PROPOSED. GIVEN THE FACTS THAT OYSTER PRODUCTION IN THE UNITED STATES HAS DECLINED GREATLY SINCE 1908 AND THAT NATURAL OYSTERSHELL IS SCARCE AND EXPENSIVE, MOTIVATION FOR USE OF THIS ALTERNATE MATERIAL AS CULTCH INCLUDES ITS CONTINUOUS PRODUCTION, LOW COST ...

THIS EFFORT WILL INVESTIGATE A THREE DIMENSIONAL VIDEO DISPLAY SYSTEM. THE SYSTEM WILL NOT REQUIRE VIEWING APPARATUS (SPECIAL GLASSES, ETC.) AND IS COMPATIBLE WITH EXISTING TV SYSTEMS. IT WILL USE A BASIC STEREOSCOPIC 3D TECHNIQUE DEVELOPED SEVERAL YEARS AGO, BUT THE NEW SYSTEM WILL INCORPORATE UNIQUE IMAGE PROCESSING THAT CORRECTS DEFECTS OTHERWISE INHERENT IN ALL SYSTEMS THAT DISPLAY STEREOSCOPI ...

A COMPUTER MODELING APPROACH IS PROPOSED TO STUDY THE EFFECT OF FRICTION OR TRACTION CHARACTERISTICS OF LUBRICANTS ON THE STABILITY OF BEARING ELEMENTS AND THE OVERALL LIFE OF A ROLLING BEARING. THE PROPOSED APPROACH CONSISTS OF USING AN EXISTING BEARING DYNAMICS COMPUTER PROGRAM TO SIMULATE THE DYNAMIC PERFORMANCE OF THE BEARING AS A FUNCTION OF THE FRICTION BEHAVIOR AT THE ROLLING ELEMENT/RACE, ...

THE PROGRAM PROPOSED HEREIN INVOLVES ANALYTICAL AND EXPERIMENTAL RESEARCH TO CAREFULLY EVALUATE AND FURTHER DEVELOP THE DIFFERENTIAL GAMMA SCATTERING TECHNIQUE FOR ACCURATE NON-INVASIVE DETERMINATION OF VOIDS, CRACKS, FLAWS IN MATERIALS AND THE DEFECTS SIZING AND LOCATION CAPABILITIES OF THIS METHOD. THIS NEW DEVICE, WHICH WE HAVE TERMED "DIFFERENTIAL GAMMA SCATTERING SPECTRUM PROBE (DGSSP)," IS B ...

A PROPOSED METHOD FOR GENERATING AN IMAGE IN DEPTH OF A GEOLOGIC CROSS-SECTION FROM OFFSET VERTICAL SEISMIC PROFILE (VSP) DATA WILL BE TESTED AND EVALUATED. THE PROPOSED METHOD USES WAVE EQUATION MIGRATION TECHNOLOGY COUPLED WITH A NEW IMAGING METHOD TO GENERATE THE IMAGE. THIS ELIMINATESTHE NEED FOR RAY TRACING AND ALLOWS FOR MORE COMPLEX VELOCITY MODELS THAN DO PRESENT METHODS. THE METHOD WILL B ...

THE PROPOSED RESEARCH RELATES TO THE REDUCTION IN NUMBER OF ELEMENTS AND INCREASE OF PERFORMANCE OF OPTICAL SYSTEMS. BY ADDING A SPATIAL INDEX OF REFRACTION DISTRIBUTION (GRADIENT-INDEX), THE NUMBER OF ELEMENTS COULD BE SUBSTANTIALLY REDUCED. IN THE PROPOSED RESEARCH, DESIGN ANALYSIS WILL BE CONDUCTED TO DETERMINE THE OPTIMUM PROFILESFOR HIGH QUALITY LENS SYSTEMS. PHASE II RESEARCH WILL STUDYTHE P ...

ELECTRIC CONDUCTIVITY AND EXCESS CARRIER LIFETIME ARE TWO OFTHE MOST IMPORTANT PARAMETERS THAT DETERMINE THE PERFORMANCEOF SEMICONDUCTOR MATERIALS FOR APPLICATION AS PHOTODETECTORS. THE ABILITY TO OBTAIN NON-DESTRUCTIVE, HIGH RESOLUTION MEASUREMENTS OF THESE CHARACTERISTICS IS ONEOF THE BASIC PROBLEMS IN THE DEVELOPMENT AND FABRICATION OF SUCH MATERIALS. A TECHNIQUE TO MEASURE THE CONDUCTIVITY BAS ...