Abstract:THE NETWORK ARCHITECTURE SPEECH SYSTEM (NASS) UTILIZES A NEW APPROACH IN PROVIDING EXCELLENT ACCESS FOR VISUALLY IMPAIRED PEOPLE TO OFF THE SHELF PROGRAMS (E.G., WORDPERFECT, LOTUS 1-2-3) THAT RUN ON THE IBM PC, AT, PS/2, AND COMPATIBLES. IT DRAMATICALLY CHANGES THE CURRENT SENSORY ADAPTIVE AID… more
Abstract:Measuring temperature in specimens being heated by electromagnetic energy requires the use of special probes. The temperature probes must be specially designed to minimize electromagnetic field perturbations. The probes in widespread usage in research institutes are thermistor sensors with very high… more
Abstract:The objective of this program is to develop non-contact vision sensing and processing schemes that can be used for ceramic and powder metallurgy process monitoring and control. Proposed applications include monitoring of overall shrinkage or differential shrinkage rates during drying of slurries,… more
Abstract:THE OBJECTIVE OF THIS PROJECT IS TO DEVELOP AN ADVANCED PROGRAMMING ENVIRONMENT FOR NUCLEAR TELEROBOTIC SYSTEMS THAT COMBINES POWERFUL GRAPHICAL USER INTERFACES, THREE DIMENSIONAL MODELING OF ROBOTS AND WORKCELLS, CAPABILITIES FOR ON-SCREEN GRAPHICAL ROBOT PATH GENERATION, EDITING AND SIMULATION,… more
Abstract:The objective of this program is to develop advanced image processing/analysis technology for the automatic determination of smoke and obscurant cloud spatial extent and the extraction of relevent features from video images produced by multiple visible and infrared sensors viewing a cloud from… more
Abstract:The primary goals of the Phase I research plan are to develop a prototype absorbable stent for use in mid-tubal reanastomosis and to evaluate the effectiveness of this device in a rabbit experimental model. Mechanical design criteria will be determined by making measurements of luminal caliber and… more
Abstract:Distributed simulation provides a means for weapon systems to be evaluated in a higly realistic simulation environment prior to the construction of a actual vehicle. However, today's simulators require the use of physical mock-ups of the controls and displays for each of the crew stations in order… more
Abstract:THE RELIABILITY AND PERFORMANCE OF SPACE SHUTTLE MAIN ENGINES (SSME) ARE CRITICAL TO MISSION LAUNCH, SUCCESS, AND SAFETY. CURRENTLY, SSME RELIABILITY AND PERFORMANCE ARE LIMITED BY TURBOPUMP BEARING FAILURE, BOTH IN THE HIGH PRESSURE LIQUID OXYGEN AND HIGH PRESSURE FUEL TURBOPUMPS (HPOTP AND HPFTP).… more
Abstract:Previous R&D at AVCON has developed miniaturized, power efficient, modular, scalable active magnetic bearings and control electronics for applications ranging from precision gimbals for sensors, to radial and thrust bearings for IHPTET type turbine engines, to radial and thrust bearings for SSME… more
Abstract:There are 300 million people in the world who are chronically infected with hepatitis B virus (HBV). Available therapies for the elimination of HBV infection often have a transient effect only. These therapies do not specifically target HBV, and this, in part, is a basis for their limited and… more
Abstract:THE PURPOSE OF THE INVESTIGATION IS TO PERFECT A NOVEL OPTICAL DEVICE THAT MEASURES THE OXYHEMOGLOBIN SATURATION (%HBO2), TOTAL HEMOGLOBIN CONCENTRATION (THB), AND OXYGEN CONTENT OF A BLOOD SAMPLE IN A GLASS CAPILLARY TUBE OF THE TYPE COMMONLY USED FOR MICROHEMATOCRIT DETERMINATIONS. WE HAVE ALREADY… more
Abstract:NUMERICAL METHODS HAVE BEEN DEVELOPED FOR SOLVING NONLINEAR PARTIAL DIFFERENTIAL EQUATIONS, USING THE FAMILY OF COMPACTLY SUPPORTED WAVELET FUNCTIONS THAT ARE ORTHOGONAL. BEING BOTH COMPACTLY SUPPORTED AND ORTHOGONAL, THE WAVELETS COMBINE THE ADVANTAGES OF FINITE ELEMENT, SPLINE, AND FOURIER… more
Abstract:THERMOPLASTICS ARE NOT WIDELY USED IN POLAR REGIONS BECAUSE THEY EMBRITTLE AND MAY LOSE 70 PERCENT OF THEIR FRACTURE TOUGHNESS AT LOW TEMPERATURES. RESEARCHERS HAVE IDENTIFIED A PROMISING MICROCELLULAR FOAM (MCF) STRUCTURE WHICH MAY SIGNIFICANTLY IMPROVE LOW TEMPERATURE THERMOPLASTIC PERFORMANCE.… more
Abstract:FETAL MONITORING IS USEFUL IN ASSESSING THE PROGRESS OF LABOR AND FOR DETECTION OF PRETERM LABOR, A LEADING CAUSE OF FETAL MORTALITY AND MORBIDITY. COMMERCIALLY AVAILABLE SENSORS FOR MONITORING INTRAUTERINE CONTRACTIONS USE CUMBERSOME BELTS AND LARGE AND BULKY SENSORS WHICH ARE UNCOMFORATABLE AND… more
Abstract:Many medical products and devices require a means of nondestructive noninvasive, high resolution interrogation of surface features in order to insure standards of quality and safety. This proposal describes techniques for nondestructive, non contacted sensing and evaluation of very small (fractions… more
Abstract:We describe a novel DNA sequencer which should be capable of sequencing more than 400 bases per run. The main objectives of Phase I are (1) to demonstrate the principle of real-time DNA sequencing by detection of separating oligonucleotide bands in gels, (2) to investigate the suitability of using… more
Abstract:WELDING USING HIGH-ENERGY (10-20MEV) ELECTRON BEAMS OFFERS POTENTIAL ADVANTAGES OVER CONVENTIONAL ELECTRON-BEAM WELDING TECHNOLOGIES. POTENTIAL ADVANTAGES OF HIGH-ENERGY ELECTRON BEAM WELDING INCLUDE THE CAPABILITY OF MAKING VERY HIGH QUALITY WELDS IN VERY THICK AND/OR LARGE WORKPIECES AT OR ABOVE… more
Abstract:We will investigate the use of multisensor data fusion in mine detection and classification. Several sensor-fusion architectures will be explored, each of which makes use of a neural network for identify fusion. A proprietary technique will be used to train the network. The Phase I effort will… more
Abstract:THIS RESEARCH PROJECT INVOLVES THE DEVELOPMENT OF OPTICAL METHODS TO QUANTIFY THE TOTAL AVAILABLE OXYGEN CONTENT OF OPICARDIAL TISSUE. EPICARDIAL OXYGEN IS FOUND IN THREE MAJOR POOLS-AS OXYGEN DISSOLVED IN AQUEOUS MEDIA, AS OXYGEN BOUND TO HEMOBLOBIN AND AS OXYGEN BOUND TO MYOGLOBIN. IN THIS PROJECT… more
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