Award Data

THE RESULTS OBTAINED TO DATE BY VARIOUS AUTHORS INDICATE CLEARLY THAT NUMERICAL SOLUTIONS ARE MORE ACCURATE AND RE QUIRE MUCH LESS COMPUTER TIME AND STORAGE WHEN THE GRID POINTS ARE PROPERLY LOCATED. THE DEVELOPMENT OF THE SOLU- TION OVER A REAL TIME PATH OR ITERATIVE PROCESS (FALSE TIME PATH) REQUIRES THE MESH NODES TO MOVE DYNAMICALLY IN THE PROPER POSITION AT EACH ITERATION OR INSTANCE OF TIME. ...

IN RECENT YEARS, CONSIDERABLE ATTENTION HAS BEEN FOCUSED ON THE DEVELOPMENT OF TECHNIQUES FOR GENETIC TRANSFORMATION OF HIGHER PLANTS. MOST ADVANCES HAVE BEEN MADE USING EITHER PETUNIA OR NICOTIANA AS A MODEL EXPERIMENTAL SYSTEM, MAINLY BECAUSE THESE PLANTS RESPOND WELL FOR REGENERATION IN CELL CULTURE. THERE IS AN OBVIOUS NEED TO EXTEND THESE STUDIES TO OTHER SPECIES, FOREST TREES IN PARTICULAR, ...

DURING THE LAST 25 YEARS THE DENSITY OF COMPUTER ELECTRONIC CIRCUITRY HAS INCREASED BY FIVE ORDERS OF MAGNITUDE. THIS DRIVE TOWARD MORE DENSELY PACKAGED MICROELECTRONICS HAS RESULTED IN A DRAMATIC INCREASE IN THE AMOUNT OF WASTE HEAT WHICH MUST BE DISSIPATED. HEAT FLUX RATES IN CURRENT LSI CIRCUITRY ARE ALREADY AS HIGH AS 20 W/CM2 AND PROJECTED LEVELS FOR VLSI AND FUTURE ADVANCED CIRCUITRY CONFIGU ...

THE EFFECT OF SCALING DOWN DEVICE DIMENSIONS OF VLSI STRUCTURES AND THE COMBINATION OF INCREASED CIRCUIT COMPLEXITY DURING THE SCALING PROCESS IS PLACING SEVERE LIMITATIONS ON THE MINIMUM PROPAGATION DELAY OF METALLIC INTERCONNECTS. OPTICAL INTERCONNECTS REMOVE THOSE SPEED LIMITATIONS AND OFFER A DEGREE OF FLEXIBILITY THAT ELECTRICAL INTERCONNECTS COULD NEVER OBTAIN. THE KEY OPPORTUNITY IS TO INTE ...

We propose to determine what outputs from the SSAJ measurement system would be suitable for traffic control applications, to determine what the "real time" needs and accuracies are for measurements of signature, speed, acceleration, and jerk (SSAJ), to integrate the output of our IST-222 Standard Signature Output Card with and Advanced Transportation Contorller (ATC) and finally to demonstrate pro ...

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Broken rails are a common cause of mainline derailments and a particular concern given the increasing use of our rail system for passenger traffic and petroleum products. The progressive nature of the defects provides an opportunity for early detection of cracks before they become significant enough to cause a derailment. Unfortunately, current inspection technology does not allow these inspection ...

Water expansion during freeze-thaw cycles can cause deterioration in concrete, leading to scaling, cracking, and crumbling over a period of years. Resistance to this damage is achieved with a system of voids formed by adding surfactants to the fresh concrete to stabilize air bubbles naturally entrained during mixing. The volume fraction, size, and spacing of these voids are critical. It is importa ...

The broader impact/commercial potential of this Small Business Innovation Research (SBIR) project is a significant advance in the production of hydrogen peroxide. The project, if successful, will yield an on-site electrolytic generation method that reduces the cost of peroxide production by up to 50% compared to the traditional centralized chemical process. By reducing cost, hydrogen peroxide can ...

This Small Business Innovation Research (SBIR) Phase I project will develop a small, low-cost, digital, all solid state detector system containing a solid-state gamma-ray detector, a solid-state neutron detector, and a low power Si CMOS signal conditioning chip. These detectors will be combined with existing electronics component technology to create small radiation monitoring systems with visual ...