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COMPOSITE MATERIALS COMPOSED OF ALTERNATING, SUBMICRON LAYERS OF DISPARATE MATERIALS, SUCH AS CERAMICS AND METALS, HAVE ENHANCED MECHANICAL PROPERTIES WHEN COMPARED WITH CONVENTIONAL MATERIALS. THE CHALLENGE IS TO ECONOMICALLY MANUFACTURE SUCH MATERIALS AT HIGH RATE AND LOW COST IN THE FORM OF "NEAR NET SHAPE" COMPONENTS WITH LOCAL PROPERTIES "TAILORED" FOR THE INTENDED STRUCTURAL APPLICATION. WE ...

We propose to develop our innovative, proprietary, pollution-free, Jet Vapor Deposition process for low-cost, high rate fabrication of high quality component layers for multi-chip modules (MCMs). This SBIR project will be carried out in collaboration with NCHIP, Inc. (San Jose CA) a leading developer of MCM technology. In Phase I, we will develop and demonstrate scaled-up JVD processes to coat 125 ...

The Larynx-Melon-Vestibular.-Lips (LMVL) Mtodel of the dolphin sonar is presented, based on the following system components: ECHOLOCATION PULSE ("clicks") The larynx, operating as a saw-tooth oscillator, is the source of echoloration pulses. o The output pulses (clicks) couple into the melon through impedance-matching nasal ducts. o The melon, acting as a slow-waveguide, forms narrow end-fire beam ...

Millimeter-wave system designers are limited to two terminal devices when high powers are required from a solid state device. InGaAs/InAlAs HEMTs latticed matched to InP substrates have produced excellent low noise results at millimeter-wave frequencies. The high power performance, however, is limited by the narrow bandgap of the InGaAs chamel which leads to low breakdown voltages between the drai ...

This proposal describes the development and analysis of a prototype portable, optimized ray tracing application. We will take an existing ray tracer and modify it to take advantage of pipilined, vector, and massively parallel processing in a portable manner. We will then analyze the effects of these performance enhancements. The major purpose of this study is to determine when MPP architectures or ...

We propose to develop optimized shared virtual memory (SVM) for message-passing machines. SVM can be implemented in a distributed memory environment much as virtual memory is implemented on uniprocessor machines. The SVM on a parallel machine would permit the user to distribute pages of a virtual memory space across processors, generating interprocessor communications for memory faults. Thus, SVM ...

This proposal describes the development and analysis of a prototype scalable library for sparse matrix operations in a distributed memory environment. The library is to be object-oriented; hence, will be implemented in C++. It is designed to be portable, and therefore will adhere to the Message Passing Interface (MPI) standard, but will use P4 from Argonne National Laboratory for the prototype. Fi ...

As a National information resource, the Internet makes available vast amounts of information to a broad range of consumers. For most users, however, only a tiny fraction of the aggregate information is significant, and the overall resource only has value if that fraction can be located reliably, quickly, and automatically. Today's tools are incapable of meeting users' needs - they are too slow and ...

Object Oriented Programming (OOP) techniques are a vital part of modern software engineering. Unfortunately, on parallel computers where the need is greatest, OOP tools are lacking. We propose to address this problem by designing a parallel OOP language. Unlike other parallel OOP research efforts, we will approach parallel OOP from the viewpoint of the parallel programming environment - not the OO ...