Abstract:An optical sensor capable of producing 3-dimensional time resolved density maps characteristic of shock wavefronts at Mhz sampling rates is proposed. Each map is obtained from simultaneous measurements obtained with a novel refractometer capable of measuring integrated density fluctuations in air… more
Abstract:A novel low-cost evanescent wave nucleic acid detector of great speed and dynamic range is proposed. The detector is based around an optical waveguide and a self-compensating interferometer design in contrast to fluorescence based biosensors. The sensor is inherently stable to vibration and… more
Analysis of Accelerator Tuning Algorithms for Integration with an Automatic Planning and Control System--Vista Control Systems, Inc., 134-B Eastgate Drive, Los Alamos, NM 87544-3304; (505) 662-2484
Mr. Michael Kroupa, Principal Investigator
Mr. Peter N. Klout, Business Official
DOE Grant No.… more
Abstract:Existing automatic speech recognition (ASR) systems work well in quiet surroundings for small- and medium-sized vocabularies, but performance degrades rapidly in noisy environments. Achieving noise robustness is amust before ASR is widely deployed by the Air Force or becomes accepted in the… more
Abstract:Military target vehicles of different models have unique acoustic signatures. These signature can be used for detection and for identification. One approach is to analyze the signature in the spectral domain, using the Fourier transform, and comparing new sound samples with known templates. Problems… more
Abstract:Due to the lack of hardware architecture standard for satellite front ends and the multitude of satellite telemetry formats, telemetry front ends can be expensive to develop and maintain-custom hardware and software solutions (unique for each satellite or station application) are often the only way… more
Abstract:Virginia Power Technologies (VPT) purposes a high-efficiency, low voltage, spacecraft power converter using Gallium Arsenide (GaAs) synchronous rectifiers. High efficiency at low output voltages cannot be achieved with Schottky rectifiers because of their fixed voltage drop. Use of synchronous… more
Abstract:The objectives of this project are to establish ballot ready specifications for the Standard Automatic Test System (SATS) Hardware Interface for Instrument, Power Supply, Switch Matrix, Receiver, Fixture, Pin Map, Cabling, and Secondary Connector Packaging. These interfaces will be based upon an… more
Abstract:The CPT is the most sensitive measure available of sustained attention in preschool and school age children. Reaction time and number of errors differentiate normal groups of children from those with Attention Deficit Hyperactivity Disorder (ADHD). Recent studies of developmental aspects of… more
Structural Insulated Roof Panels with Integrated Daylight Systems--W. H. Porter, Inc., 4240 136th Avenue, Holland, MI 49424-8442; (616) 399-1963
Mr. William H. Porter, Principal Investigator
Mr. William H. Porter, Business Official
DOE Grant No. DE-FG02-97ER82508
Abstract:The primary objective of this three phase (Definition; Detail Design & Development; Implementation) project is to create the generic core of a computer based Production Cost Model (PCM) to support Program Offices in their attainment of several Acquisition Reform Initiatives. The PCM supports the… more
Abstract:A need exists for wide-band, high data rate communications capabilities for the soldier in the field. A wireless LAN solution that does not require directional antenna pointing for the soldier on the move is desired. Conformal antenna embedded in the soldier ensemble can solve the problem and also… more
Abstract:The photographic industry consumes about 70 million troy ounces of silver annually. The technology used to recover the silver from concentrated solution is more than 40 years old. However, investigators project that, based on industry experience, as much as 20% of this silver is lost in the wash… more
Abstract:An air pressure relief valve for airbags is described that has high frequency response owing to its low inertial mass. It is able to open to expose up to 2 square feet of exhaust area within .010 second, thus achieving optimum energy management. The relief valve operation is passive; it is opened… more
Abstract:This project addresses experimental and theoretical studies on the use of abrasive-waterjets (AWJs) to drill precise small-diameter holes in advanced materials. AWJs have been demonstrated for the precision drilling of small-diameter holes (0.5-2.5 mm [0.02-1.0 inch]) in metals, glass, composites,… more
In-Situ Ultrahigh-Pressure Waterjet Peening of Nuclear Reactor Internals for the Prevention of Stress Corrosion Cracking--Waterjet Technology, Inc., 21414 68th Avenue South, Kent, WA 98032-2439; (206) 872-1925
Mr. David Monserud, Principal Investigator
Ms. Diana Suzuki, Business Official
Abstract:Despite improvements in alloying and processing, the oxidation resistance of titanium and titanium aluminide alloys is one of the major factors limiting their use in advanced propulsion equipment. In addition, there are certain applications for these alloys that would benefit from improved erosion… more
Abstract:In order to overcome fabrication problems associated with large size millimeter wave/infrared (MMW/IR) beamcombiner, WaveBand Corporation proposes to design and develop a diffractive optical element (DOE) on a plastic substrate. This DOE fabricated out of material with very low MMW absorption will… more
Abstract:With the recent progress in the development of millimeter wave (MMW) receivers, especially those based on low-cost microwave/MMW integrated circuits, MMW imaging sensors have become a reality. Once fully developed, they will offer a major advantage over infrared and visible range imagers in that… more
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