Award Data

Microwave Technologies Incorporated is proposing the development of a very compact radio-frequency (rf) electron beam accelerator which appears to be well-suited for BMDO's directed energy applications. This novel concept employs a single short rf cavity operating in circular polarization to accelerate a low-energy ma ~netized pencil beam to energies that range from 2 to 10 MeV. The proposed accel ...

This research project is directed at developing an operator perception model based on insight from empirical perception data combined with knowledge of how the human vision system processes information. As a first step in this direction, we are proposing to collect perceptual data and use this data to develop, implement, and evaluate concept approaches for augmenting human operator performance in ...

Glass is an attractive material for microelectronic packaging because it is hermetically sealing, has a low coefficient of thermal expansion, and is compatible with d.c. circuits. Unfortunately, the working temperature of glass is too high for this application. Low-temperature processing of a sol-gel derived, aluminosilicate material for hermetic seals is proposed for electronic packaging. This ...

A SELF-REGENERATIVE FEEDBACK TECHNIQUE IS BEING INVESTIGATEDTO SUPPRESS THE FORMATION OF SIDEBANDS THAT LIMIT THE SPECTRAL BRIGHTNESS AND GENERAL PERFORMANCE OF PRESENT HIGH-POWER FREE ELECTRON LASERS (FELS). THIS TECHNIQUE DOES NOT INVOLVE INTRA-CAVITY COMPONENTS THAT SUFFER LOSS DAMAGE DUE TO HIGH POWER OPERATION. A POTENTIAL BREAKTHROUGH IN FEL TECHNOLOGY, ANALYSIS AND SIMULATION ARE BEING PERF ...

The proposed effort will apply advanced methods of hybrid learning to problems of detection and identification of sensory events (e.g., boost phase evens). Our approach aims at building a vision system capable of hybrid learning, in which symbolic (rule-based) and subsymbolic (neural network) strategies are integrated to achieve high efficiency and accuracy both in learning human comprehensible se ...

THE CHEMICAL MECHANISMS OF CHEMICAL VAPOR DEPOSITION (CVD) OF DIAMOND AND OTHER ELECTRONIC MATERIALS ARE AT BEST POORLYUNDERSTOOD. DURING PHASE I, WE SHALL CONSTRUCT A LOW PRESSURE CHEMICAL VAPOR DEPOSITION (LPCVD) REACTOR EQUIPPED WITH AN ION BEAM SURFACE PROBE AND DEMONSTRATE ITS UTILITY IN DETERMINING SURFACE STOICHIOMETRIES UNDER ACTUAL DEPOSITION CONDITIONS IN-SITU. THE GOAL IS TO PERFECT AND ...

THE APPLICATION OF HIGH TEMPERATURE SUPERCONDUCTORS IS SEVERELY LIMITED BY THE LOW CURRENT DENSITIES ACHIEVABLE IN BULK MATERIALS, SUCH AS Y1BA2CU3O(7-X), OR 123 FOR SHORT. THE LARGE CURRENT DENSITIES OBSERVED WITHIN INDIVIDUAL GRAINS (AND IN THIN FILMS) ARE REDUCED BY "WEAK LINKS" AT THE GRAIN BOUNDARIES, CAUSED BY MISALIGNMENT OF THE ANISOTROPIC GRAINS AND BY INSULATING IMPURITY PHASES. SOME OF ...

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AN ARRAY COMMUNICATIONS COPROCESSOR (ACC) ARCHITECTURE HAS BEEN DEVELOPED THAT PROVIDES AUTOMATIC, ADAPTIVE, AND DYNAMICALLY CONFIGURABLE INTER-PROCESSOR COMMUNICATIONS AND IS COMPATIBLE WITH MOST COMMERCIALLY AVAILABLE STATE-OF-THE-ART COMPLEX INSTRUCTION SET COMPUTERS (CISC) AND REDUCED INSTRUCTION SET COMPUTERS (RISC). IN THIS INVESTIGATION, THE ARRAY COMMUNICATIONS CONTROLLER IS BEING IMPLEMEN ...

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