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THIS PROPOSAL PRESENTS A PLAN FOR DEVELOPING A LOW-COST, SIMPLE ACTIVE OPTICAL DETONATION SENSOR FOR ADVANCED MINE AND BARRIER SYSTEMS. DUBBED THE ACTIVE RANGING, TRACKING AND SIGNATURE SENSOR (ARTS), THE PROPOSED SYSTEM IS CAPABLE OF DETERMINING THE RANGE, VECTOR VELOCITY, AND GEOMETRIC PROFILE OF OBJECTS PASSING THROUGH ITS FIELD OF VIEW. IT TAKES ADVANTAGE OF RECENT ADVANCES IN OFF-THESHELF OPT ...

CURRENT DESIGNS FOR HIGH CURRENT (10-100KA) ACCELERATORS ARE BASED ON LINEAR OPERATING GRADIENTS OF AT BEST 1-2 MEV/METER. IN FERRI-(FERRO)MAGNETIC INDUCTION ACCELERATORS, THESE LOW GRADIENTS ARE IMPOSED BY THE PROPERTIES OF THE MATERIAL WHICH COMPRISES THE CORE. WITH AIR CORE RADIAL LINE INDUCTION LINACS, THE CONSTRAINTS IS DERIVED FROM THE GEOMETRY OF THE RADIAL LINES AND THE DIELECTRIC BREAKDOW ...

THIS PROJECT IS BASED ON THE PREMISE THAT PRIMARY CARE- GIVERS SHOULD PLAY A MAJOR ROLE IN DESIGNING, MANAGING, AND MONITORING SERVICES WHICH SUPPORT CHILDREN WITH DISABILITIESAND THEIR FAMILIES. RESPITE SERVICES OFFERS BUT ONE FORUM FROM WHICH THEY CAN EXERCISE THESE ROLES. THROUGH THE USE OF AN ADVISORY BOARD, MADE UP LARGELY OF PRIMARY CARE GIVERSAND A NATIONAL SURVEY THIS PROJECT SEEKS TO DETE ...

FOR THE REST OF THIS CENTURY, TWO OF THE POTENTIALLY MOST IMPORTANT ADVANCES IN THE "TECHNOLOGY" OF LARGE SCALE SCIENTIFIC COMPUTING ARE SPARSE MATRIX (ITERATIVE) ALGORITHMS AND MASSIVELY PARALLEL PROCESSING. IN THIS PROPOSAL, WE OUTLINE OUR PLANS TO BUILD A SOFTWARE PACKAGE FOR THE CONNECTION MACHINE CM-2 THAT WILL BRING THE POWER OF BOTH ADVANCES TO THE AID OF THE SCIENTIFIC COMMUNITY WITHOUT FO ...

PROVIDING INDIVIDUALIZED INSTRUCTION FOR DISABLED STUDENTS IN SPECIAL EDUCATION PLACEMENTS IS A TIME-CONSUMING PROCESS FOR EDUCATORS AND THUS COSTLY. COMPUTERIZED AND INTERACTIVEVIDEODISK EDUCATIONAL FORMATS MAY NOT BE READILY CUSTOMIZED FOR THE INDIVIDUAL STUDENT. HOWEVER, COMMONLY-AVAILABLE IN PERSONAL COMPUTERS AND HAND-HELD CAMCORDERS ARE TOOLS AVAIL ABLE IN MOST SCHOOLS. IF A PERSONAL COMPUTE ...

INTERMETALLIC COMPOUNDS ARE KNOWN FOR THEIR HIGH MELTING POINTS AND CORROSION AND OXIDATION RESISTANCE. MANY OF THESE COMPOUNDS HAVE LOW DENSITIES AND VERY HIGH STRENGTHS AND, THEREFORE, ARE OF INTEREST FOR HIGH TEMPERATURE AEROSPACE AND SPACE STRUCTURE APPLICATIONS. HOWEVER,CONVENTIONAL PROCESSING OF INTERMETALLIC COMPOUNDS SUFFERS SEVERE LIMITATIONS: REACTIONS WITH CONTAINERS, POROSITY, CONTAMIN ...

TREMENDOUS EXCITEMENT AND INTEREST HAS BEEN GENERATED IN RECENT MONTHS OVER THE DISCOVERY OF THE YBA(2)CU(3)O(7-X) ("123"), LIQUID NITROGEN SUPERCONDUCTORS. HOWEVER, THIS EXITEMENT HAS BEEN TEMPERED BY THE INABILITY TO ACHIEVE LARGE TRANSPORT J(C)'S IN BULK-PROCESSED POLYCRYSTALLINE MATERIALS BECAUSE OF WEAK LINK BEHAVIOR. THESE WEAK LINKS HAVE TWO POSSIBLE ORIGINS; FIRSTLY, THE PRESENCE OF NONSUP ...

A MAJOR PROBLEM FACING PHYPERSONIC VEHICLE DESIGNERS IS THE DEVELOPMENT OF FLIGHT STRUCTURES WHICH CAN WITHSTAND MULTIPLE HEATING CYCLES TO OVER 3500 DEG F. ADVANCED CARBON/CARBON COMPOSITES (ACC) ARE A LEADING CANDIDATE BUT WILL REQUIRE IMPROVED STRUCTURAL CONCEPTS AND OXIDATION RESISTANT COATINGS. CURRENT 2-D ACC MADE FROM CARBON-PHENOLIC HAVE POOR TRANSVERSE STRENGTH AND THERMAL CONDUCTIVITY. 3 ...

EFFECTIVE PERFORMANCE OF REUSABLE HYPERSONIC VEHICLES WILL DEPEND ON THE DEVELOPMENT OF THERMAL PROTECTION SYSTEMS (TPS) FOR NOSE TIP, WING LEADING EDGE, AND FUSELAGE STRUCTURES CAPABLE OF OPERATION FOR EXTENDED PERIODS IN AN EXTREME AEROHEATING ENVIRONMENT. MINIMUM WEIGHT DESIGN MAY BE ACHIEVED VIA A COMBINATION OF ACTIVE/PASSIVE TPS APPROACHES. THIS WOULD INVOLVE THE DEVELOPMENT OF A HIGH TEMPER ...

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