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MCNC PROPOSES A FEASIBILITY STUDY AND EVALUATION OF THREE PROMISING APPROACHES TO THE FABRICATION OF SURFACE TEST STRUCTURES ON SILICON. SURFACE FEATURES ON THE FIRST STRUCTURE WILL BE PRODUCED BY CONTROLLABLY ETCHING THERMALLYGROWN OXIDES. FEATURES ON THE SECOND WILL BE MADE BY ETCHING PIEZOELECTRIC THIN FILMS. USING THE PIEZOELECTRIC FILM AS PART OF A CAPACITOR, STEP-HEIGHT CAN BE VARIED AND PRO ...

A TECHNIQUE FOR OBTAINING TRUSTWORTHY COMPILATION BASED ON A COMPILATION CHECKER (SIMILAR TO A PROOF CHECKER) IS PROPOSED. THE TRANSFORMATIONS USED IN A COMPILER WILL BE FORMALLY SPECIFIED AND VERIFIED USING INTERPRETER EQUIVALENCE METHODS. THE COMPILER WILL BE INSTRUMENTED TO PRODUCE A TRACE OF THE TRANSFORMATIONS APPLIED IN THE COMPILATION OF A GIVEN PROGRAM. THE COMPILATION CHECKER WILL VALIDAT ...

Microbiologically influenced corrosion (MIC) of most industrially utilized alloys, including those used in many Naval installations, is well established. However, the diagnosis of MIC type corrosion is often difficult to make using the techniques commonly employed requiring large amounts of tiem and money and "expert opinion". Ther is a need for a less subjective indicator of MIC. The work of seve ...

ARTIFICIAL INTELLIGENCE/EXPERT SYSTEM TECHNIQUES HAVE DEMONSTRATED THE ABILITY TO ADDRESS COMPLEX REASONING TASKS REQUIRED FOR PROCESS PLANNING. FEATURE-BASED DESIGN THEORY AND PRELIMINARY EFFORTS HAVE SHOWN THE POTENTIAL OF PROVIDING A FUNDAMENTAL MODEL FOR CAPTURE AND MANIPULATION OF DESIGN KNOWLEDGE. HOWEVER, THE TWO TECHNOLOGIES HAVE NOT BEEN SUFFICIENTLY INTEGRATED TO ALLOW DESIGN FEATURES TO ...

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THE PRIMARY GOAL OF THIS PROJECT IS TO DEVELOP AND DEMONSTRATE A SIMULATION/FACTORY CONTROL CAPABILITY TO (1) SIMULATE PRODUCTS, PROCESSES, AND FACTORY CONFIGURATIONS AT MULTIPLE LEVELS OF ABSTRACTION, (2) PROVIDE FINE GRAINED ANALYSIS OF PRODUCT AND PROCESS DESIGNS, AND (3) PROVIDE A MODEL DRIVEN FACTORY CONTROL ARCHITECTURE SO THAT THE MODELS EXECUTED IN THE SIMULATION STUDIES CAN BE DIRECTLY US ...

FUEL CELLS OPERATING IN AQUEOUS ELETROLYTES (BELOW 200¿C, DEPENDING ON THE CHOSEN ELECTROLYTE TECHNOLOGY) NORMALLY OPERATE ON HYDROGEN FUEL AND OXYGEN (OR AIR) AS THE OXIDANT. HIGH-PERFORMANCE FUEL CELL ELECTRODES REQUIRE HIGH CATALYST SURFACE AREAS, GOOD ELECTRONIC CONDUCTIVITIES AND BROAD REACTION ZONES, DEFINED BY THE CONTACT AREA BETWEEN THE CATALYST, THE GAS PHASE REACTANT AND THE ELECTROLYT ...

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