Abstract:Astralux, in collaboration with the University of Colorado, proposes to develop high-power SiC microwave bipolar transistors for use in pulsed RF transmitters. More specifically, the performance goal is a 4H-SiC bipolar junction transistor (BJT) withpulsed power up to 650 W, single stage power gain… more
Abstract:A recent workshop on wide bandgap semiconductors concluded there is still an urgent need for a GaN single crystal boule. Such a boule would allow the fabrication of single crystal wafers of high quality GaN for the epitaxial growth of high qualitydevices and integrated circuits for numerous … more
Abstract:This Small Business Innovative Research (SBIR) project will demonstrate the feasibility of using fiber-optic sensors on the human-scale robot hand that has been developed by the Robotic Systems Technology Branch at the NASA Johnson Space Center (JSC). The fiber-optic sensor approach will provide an… more
Abstract:This Small Business Innovative Research (SBIR) project will demonstrate the feasibility of using fiber-optic sensors on the human-scale robot hand that has been developed by the Robotic Systems Technology Branch at the NASA Johnson Space Center (JSC). The fiber-optic sensor approach will provide an… more
Abstract:The objective is the development of a high power microwave antenna to operate with 100 megawatts pulsed input at L band. Unfortunately, the present dish antennas capable of achieving this objective are too large for use on Army land vehicles (HMM) and airplatforms (Blackhawk). With recent antennas… more
Abstract:The objective is to develop an RF Distribution (RFDS) Systemoperating over HF to UHF to support not only communications butalso information warfare (IW) systems (attack and exploit)requirements. The RFDS is capable of accommodating broadbandsignals distribution to allow spread spectrum and… more
Abstract:Astron proposes to develop and demonstrate a series of compact, extremely high power transmit/receive anennas to cover (with a minimum number of antenna elements) the HF through UHF frequency range. These antennas are intended for on-the-move operationsin airborne and also vehicular applications. … more
Abstract:Develop and test antennas suitable for an unmanned aerial vehicle (UAV) with signals intelligence and communications payloads and the potential to be used with other systems. New ideas are stressed to achieve antenna miniaturization and widebandwidths.The development of a miniaturized broadband… more
Abstract:The goal of this project is to develop a collection of components that can be added to standard power wheelchairs to convert them into smart wheelchairs. Wheelchairs equipped with the Smart Wheelchair System will be able to assist users in two distinct ways: as a mobility aid, the system will… more
Abstract:In a large computer network, a sophisticated, coordinated attack can have a devastating impact. To thwart the effectiveness of such an attack, investigators and administrators must be able to quickly understand what resources were affected and how theywere affected. Complicating this task is the… more
Abstract:Maliciously constructed boot firmware is a threat to our information infrastructure that has largely been ignored. Boot firmware controls the power-up procedure initializing a computer's hardware and loading its run-time system. This code, embedded inall third-party peripheral devices, can easily… more
Abstract:Maliciously constructed boot firmware is a threat to our information infrastructure that has largely been ignored. Boot firmware controls the power-up procedure initializing a computer's hardware and loading its run-time system. This code, embedded inall third-party peripheral devices, can easily… more
Abstract:Conventional methods of quality assurance cannot manage the increasing complexity of embedded systems and the demands being placed upon them. Aspect-Oriented Programming is a promising new software technology, well suited to embedded systems. MarryingAOP with formal methods will make possible high… more
Abstract:The Athena Group will develop an innovative, low-power, fast Fourier transform (FFT) processor for use in mitigating both intentional and unintentional narrowband jamming and interference in handheld global positioning system (GPS) receivers. Athena'sadvanced digital signal processing (DSP)… more
Abstract:DESCRIPTION:We propose to carry out a rapid genome-wide search for new mitogens
and survival factors for stem and precursor cells of the CNS, potentially
doubling or more the number of known CNS mitogenic and survival factors over
the course of two years. To do this, a novel… more
Abstract:DESCRIPTION (Applicant's abstract): We propose a novel high-throughput approach
to the discovery of novel mitogens. We will use Random Activated Gene
Expression (RAGE), which allows unbiased expression of full-length, or near
full-length, transcripts of greater than 95… more
Abstract:The objective of the project is to demonstrate that practical, affordable, andreusable software components can be used to create an affordable, real-time production monitoring and controlsystem for U.S. shipyards. Atlantec and National Steel and Shipbuildng will develop,test, and demonstrate two… more
Abstract:The utilization of Modeling and Simulation (M&S) technology to support the life cycle development, fielding, training and sustainment of military systems has demonstrated tremendous benefit as M&S applications have matured. The benefits ofinteroperability between M&S applications and Command and… more
Abstract:Future NASA missions will involve transportation and/or storage of liquid hydrogen tanks for use as propellant. If no precautions are taken substantial amounts of liquid may be lost by evaporation due to inevitable parasitic heat loads well before cryogen utilization. Cryocoolers may intercept… more
Abstract:Various planned NASA missions depend on the availability of reliable and efficient coolers that achieve temperatures below 6K. These coolers are needed as the upper stage for lower temperature coolers such as dilution refrigerators or adiabatic demagnetization refrigerators. Astronomical missions… more
Abstract:Various planned NASA missions depend on the availability of reliable and efficient coolers that achieve temperatures below 6K. These coolers are needed as the upper stage for lower temperature coolers such as dilution refrigerators or adiabatic demagnetization refrigerators. Astronomical missions… more
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