Award Data

The successful operation of the Department of Energy (DOE) X-ray light sources, free elec- tron laser (FEL), and linear accelerator facilities depends on developing advanced photoinjectors. These require photocathodes capable to deliver high quantum efficiency (QE), high-brightness, low emittance, high-average current electron beams. Measurements have demonstrated the potential to generate e ...

To elucidate the mysterious origins of nuclear spin, the Nuclear Science Advisory Committee (NSAC) has identified the science of electron-ion colliders, and specifically a proposed polarized electron-ion collider, as “absolutely central to U.S. science”. Such machines, estimated to cost as much as $500M–$1B, will require polarized particle beams; and high polarization improves experimen ...

The product concept combines stability and high gas transport of amorphous fluoropolymers with high selectivity of silver salts to create a new membrane with excellent separation, fouling resistance to sulfurous and other gases, and superb stability at high flux.

A RESEARCH AND DEVELOPMENT PROGRAM IS PROPOSED WHICH WILL DETERMINE THE TECHNICAL FEASIBILITY OF AN INSTRUMENT DESIGNED TO PROVIDE THE CAPABILITY OF MEASURING THE CONCENTRATION OF OXY AND PEROXY FREE RADICALS IN COMBUSTION STUDIES. THE DETECTOR FOR THE INSTRUMENT IS BASED ON AN AMBIENT FREE RADICAL DETECTOR WHICH USES AN AMPLIFICATION CHAIN REACTION BETWEEN THE FREE RADICALS AND CO AND NO WHICHRES ...

THIS PROJECT WILL STUDY, IN THE CONTEXT OF HIGH PERFORMANCE COMPUTER SYSTEMS, THE NEWLY CONCEIVED FAST ADAPTIVE COMPOSITE GRID METHOD (FAC) FOR NUMERICAL SOLUTION OF PARTIAL DIFFERENTIAL BOUNDARY VALUE PROBLEMS. FAC IS A METHOD FOR ADAPTING LOCAL GRIDS TO RESOLVE LOCAL PHYSICAL PHENOMENA AND FOR VERY FAST SOLUTION OF THE RESULTING DISCRETE EQUATIONS; IT CAN IMPLEMENT THE CAREFULLY DEVELOPED DISCRE ...

THE PURPOSE OF THIS RESEARCH IS TO STUDY THE FEASIBILITY OF QUANTIFYING THE EFFECTS OF IREASED AUTOMATION ON THE WORKLOAD AND PERFORMANCE OF THE FEDERAL AVIATION ADMINISTRA-TION'S AIR TRAFFIC CONTROLLER. IN PHASE I, RESEARCH WILL FOCUS ON ADAPTRING OUR CURRENT HUMAN PERFORMANCE MODEL TO REPRESENT THE JOB CHARACTERISTICS OR ATTRIBUTES THAT WILL DETERMINE LEVELS OF WORKLOAD AND PERFORMANCE IN THE AD ...

THERE DOES NOT EXIST TODAY A UNIFIED MEANS OF EVALUATING THE VORTEX INTENSITY BEHIND COMMERCIAL JET LINERS PRIOR TO PROTOTYPE DEVELOPMENT AND TESTING AT FULLSCALE. OVER THE PAST SEVERAL YEARS, DATA AND ANALYTICAL DEVELOPMENTS HAVE PROVIDED MUCH ADDITIONAL TECHNOLOGY WHICH MAY MAKE POSSIBLE THE PREDICTION OF WAKE INTENSITY AND DECAY FROM FIRST PRINCIPLES. THE OBJECT OF THIS INVESTIGATION IS TO DEMO ...

THE RECOGNIZED LOW LEVEL WIND SHEAR PHENOMENON KNOWN AS A MICROBURST POSES A SERIOUS AIR SAFETY THREAT TO COMMERCIAL AVIATION WHILE IN A LANDING OR POSES A SERIOUS COMMERCIAL AVIATION WHILE IN A LANDING OR TAKEOFF PATTERN. THIS LOW LEVEL WIND SHEAR HAS BEEN DEMONSTRATED TO DE A THIS LOW LEVEL WIND SHEAR HAS BEEN DEMONSTRATED TO BE A MAJOR CONTRIBUTING FACTOR TO SEVERAL CRASHES OF COMMERCIAL AIRLIN ...

IN THE PAST FEW YEARS, A CONSIDERABLE INCREASE IN PERFORMANCE HAS BEEN ACHIEVED FROM HIGH SPEED STEEL AND CARBIDE METAL CUTTING TOOLS BY THE ADDITION OF HARD SURFACE COATINGS SUCH AS TITANIUM NITRIDE, SILICON NITRIDE ,TITANIUM CARBIDE, ALUMINUM OXIDE AND VARIOUS COMBINATIONS OF THE ABOVE. THESE COATINGS ARE DIFFICULT TO APPLY UNIFORM LY, PARTICULARLY IN THE CASE OF COMPLEX GEOMETRIES AND ARE EXPEN ...

CHARGE-MODE DIGITAL LOGIC APPEARS TO HAVE GREAT POTENTIAL AS A BUILDING BLOCK FOR FUTURE SUPERCOMPUTERS. ITS EXTREMELY HIGH COMPUTATIONAL DENSITY, ESTIMATED AT 2 X 10(14) GATE-HZ/CM(2), IS ACHIEVABLE AT 2 MINIMUM FEATURES USING CONVENTIONAL, OPTICAL LITHOGRAPHY. BY CONTRAST, DOD'S VHSIC II PROGRAM GOAL IS 1 X 10(13) GATE-HZ/CM(2) AND REQUIRES 0.5 UPSILON M FEATURES. WITH CHARGE-MODE LOGIC, MORE TH ...