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DEVELOPMENT OF INNOVATIVE APPROACHES TO ENHANCING THE GROUND C3 SEGMENT SURVIVABILITY OF SPACE SYSTEMS REQUIRES A METHOD FOR MODELING THE SURVIVABILITY OF THE GROUND SEGMENTS OF SUCH SYSTEMS IN ORDER TO ALLOW COMPARATIVE EVALUATION OF APPROACHES AND SELECTION OF THE MOST EFFECTIVE ONE FOR DEVELOPMENT. SPC HAS DEVELOPED A COMPUTER MODEL OF THE PHYSICAL SURVIVABILITY OF SUCH SYSTEMS. GIVEN RELEVANT ...

AbTech Corporation proposes to apply its unique Statistical Network ModelingTM technology to develop a non contact prognostic assessment tool that 1) acquires, processes, and analyzes electronic radiated signal data, 2) learns the expected characteristics and patterns of specific radiated signals measured from microelectronic semiconductor devices using AbTech's statistical network modeling techno ...

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HIGH RESOLUTION BOREHOLE-TO-BOREHOLE SEISMIC TOMOGRAPHY CAN PROVIDE MUCH OF THE INFORMATION NEEDED TO IDENTIFY SUBTLE OIL RESERVOIR HETEROGENEITIES. TO DATE, MUCH OF THE HIGH RESOLUTION CROSS-WELL RESEARCH HAS INVOLVED THE USE OF FLUID-COUPLED PIEZOELECTRIC SEISMIC SOURCES. HOWEVER, IN PRACTICAL COMMERCIAL APPLICATIONS OF FLUID-COUPLED SOURCES, SOME CONSIDERATION MUST BE GIVEN TO DEPLOYING THE SOU ...

HIGH RESOLUTION BOREHOLE-TO-BOREHOLE SEISMIC TOMOGRAPHY CAN PROVIDE MUCH OF THE INFORMATION NEEDED TO IDENTIFY SUBTLE RESERVOIR HETEROGENEITIES THUS ALLOWING STRATEGIES PLACEMENTOF PRODUCTION WELLS. HIGH RESOLUTION SEISMIC TECHNIQUES ARE IDEALLY SUITED TO HARD ROCK APPLICATIONS WHERE FORMATIONVELOCITIES EXCEED 10,000 FEET PER SECOND. HOWEVER, TO DATE,THE ACQUISITION OF HIGH FREQUENCY TOMOGRAPHIC D ...

SENSITIVITY OF STELLAR GUIDANCE OPTICS IS LIMITED BY REFLECTION OF STRAY LIGHT INSIDE THE OPTICAL SYSTEM. IMPROVEMENT BY 50-100% OR MORE CAN BE OBTAINED WITH A BLACK COATING, DISCOVERED BY CHARLES FELDMAN AT JOHNS HOPKINS APPLIED PHYSICS LABROATORY, CONSISTING OF SUBMICROSCOPIC COLUMNS OF AMORPHOUS SILICON PRODUCED BY ETCHING THE SURFACE OF A SOLID SILICON LAYER. THE PROGRAM, WITH DR. FELDMAN AS C ...

IN THIS PHASE I EFFORT, THE GOAL IS TO DETERMINE THE FEASIBILITY OF CONDUCTING ACCELERATED CORROSION TESTING OF VEHICLES BY SIMULATING 5-10-15 YEARS OF FIELD LIFE IN A COMPUTER CONTROLLED ENVIRONMENT SIMULATION CHAMBER. THE DIFFERENT REQUIREMENTS OF THE CHAMBER, THE TYPES OF ENVIRONMENTS PRESENT IN THE DIFFERENT GEOGRAPHICAL REGIONS, THE CORRELATION BETWEEN ACCELERATED CHAMBER TESTS AND FIELD COND ...

IN RECENT YEARS THE CORROSIVITY OF THE TACTICAL WHEELED VEHICLE ENVIRONMENT HAS BECOME MORE SEVERE DUE TO INCREASED USE OF ROAD SALTS, INCREASED ATMOSPHERIC POLLUTANTS (SO(2) AND NO(X)), AND CHANGES IN CLIMATIC CONDITIONS IN SELECTED GEOGRAPHIC REGIONS OF THE WORLD. THE COMBINED EFFECTS OF THE ABOVE CONDITIONS AND MARINE SALTS HAVE SIGNIFICANTLY DECREASE THE LIFE EXPECTANCY OF SELECTED VEHICLES AN ...

THE OVERALL OBJECTIVE OF THE PROPOSED RESEARCH IS TO INVESTIGATE THE USE OF THE ELECTRICAL POTENTIAL DROP TECHNIQUE AS AN ACCELERATED TEST METHOD FOR DETERMINING THE STRESS CORROSION CRACKING RESISTANCE OF HY-130 STEEL WELDMENTS UNDER CATHODIC PROTECTION IN NATURAL SEAWATER AT AMBIENT TEMPERATURES. WELDS WILL BE DEPOSITED IN 1-INCH THICK HY-130 STEEL BUTT JOINTS. COMPACT TENSION FRACTURE-MECHANICS ...

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