Award Data

THE MAJOR PROBLEM WITH USING MACHINE-INDEPENDENT MICROPROGRAMMING LANGUAGE IS EFFECTIVE MACHINE TARGETING. A MICROCODE COMPILER IS DESIRABLE WHICH EASILY DIRECTS THE CODE GENERATOR OF A HIGH-LEVEL LANGUAGE TRANSLATOR IS DISTINCT MICROPROGRAMMABLE MACHINES. IT IS PROPOSED TO STUDY THE PARTITIOING OF THE MICROCODE GENERATION PORTION OF THE TRANSLATOR INTO TWO SEPARATE BUT RELATED COMPONENTS: A MACHI ...

PULSED WATER JETS, GENERATED BY CUMULATIVE NOZZLE DEVICES, HAVE A PRESSURE-TIME BEHAVIOR WHICH CAN CAUSE ROCK TO FAIL BY THREE DISTINCT MODES: MECHANICAL CRUSHING, HYDRAULIC EROSION AND LARGE-SCALE PROPAGATION OF FLUID PRESSURIZED CRACKS. THE INTERACTIONS BETWEEN THESE THREE MODES OF FAILURE CAN BE EXPLOITED SO AS TO YIELD ROCK EXCAVATION AT AT SPECIFIC ENERGIES COMPARABLE TO THOSE FOR CONVENTIONA ...

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RAILROAD RAILS AND CAR WHEELS SUFFER MECHANICAL WEAR THROUGH USE, AND THIS WEAR IS A MAJOR MAINTENANCE EXPENSE ITEM FOR MOST RAILROADS. IT HAS BEEN SHOWN THAT SUBSTANTIAL REDUCTION IN WEAR CAN BE ACHIEVED THROUGH LUBRICATION, ALTHOUGH THE LUBRICATORS THEMSELVES ARE A MAINTENANCE PROBLEM. IT IS PROPOSED TO DEVELOP AN ANTI-WEAR COATING WHICH CAN BE APPLIED PERIODICALLY TO RAILS TO REDUCE WEAR AND TO ...

QUANTITATIVE GEOMORPHIC GUIDELINES ARE LACKING FOR THE DESIGN AND CONSTRUCTION OF RECLAIMED SURFACE MINE TOPOGRAPHY. STABLE TOPOGRAPHY IS NECESSARY FOR RECLAIMED AREAS IN ORDER TO REDUCE SEDIMENT POLLUTION TO OFFSITE AREAS, TO ALLOW RAPID DEVELOPMENT OF VEGETATION, AND TO MEET STATE AND FEDERAL LAWS. GUIDELINES FOR GEOMORPHIC DESIGN OF STREAM CHANNEL NETWORKS WILL BE DEVELOPED FROM ANALYSIS OF NAT ...