Award Data

While the efficiency of x-ray sources is defined by the laws of physics, present day sources do not take full advantage of those laws. Other materials thant tungsten are not only more efficient in producing bremsstrahlung, but have "characteristic" x-rays that can make the beam harder instead of softer (as in the case for tungsten). Today's tubes also do not use optimum angles for the incident e ...

To advance scientific and medical understanding of blood chemistry, we propose to develop modern medical simulation software that will be of use in predicting outcomes of medical interventions. For example, the chemical reactions between hemoglobin, oxygen, carbon dioxide, and electrolytes that occur in blood are essential to understanding human physiology, but still confuse students at many leve ...

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Disability is the nation's largest public health issue; with over 35 million Americans experiencing disability and annual disability-related costs exceeding $170 billion. Planning for the efficient and equitable allocations of state and local rehabilitation services has generally been inadequate, however. Geographic information systems (GIS) approaches have the potential to dramatically improve ...

In this effort we propose to investigate various techniques for efficient and rapid CAD design of printed circuit antennas and associated circuit components. While the design of single microstrip patch antenna is relatively well developed, the same can not be said for arrays and antennas mounted on complex structures, especially at high frequencies where the quasi-static models are not accurate a ...

The objective of this proposal is to study and develop an object oriented message passing software methodology that helps facilitate the description and storage of the knowledge describing software components. The componenet knowledge will come from the component itself. The interfaces between components are characterized by the messages/data they exchange and the responsibilities that each comp ...

DESIGN AND FABRICATION OF SOLID-STATE DIRECTION-INDICATING APPARATUS, WITH TILT-IMMUNITY, THAT PROVIDES AN AUDIBLE OR TACTILE INTERFACE WITH THE USER. REDUCED SIZE TO ALLOW ENCAPSULATION IN A TYPICAL WALKING CANE. A DEVICE WILL BE DESIGNED THAT WILL PROVIDE A VISUALLY IMPAIRED PERSON WITH AN INDICATION OF HORIZONTAL DIRECTION, WITH RESPECT TO THE EARTH'S MAGNETIC FIELD. THE DEVICE WILLALSO SIGNAL ...

WE PROPOSE TO DEVELOP AND VERIFY IN THIS PHASE I PROGRAM A TECHNIQUE THAT WILL ACCURATELY AND REPEATABLY MEASURE SURFACE PROFILES AND DISTANCES BETWEEN A TEST OBJECT AND DETECTORS USING THE SHEARING HETERODYNE INTERFEROMETRY TECHNIQUE. THE TECHNIQUE IS BASED ON SHEARING HETERODYNE INTERFEROMETRY WITH A FREQUENCY MODULATED LASER DIODE USING THE FOUR-BUCKET-INTEGRATING TECHNIQUE. IT CAN BE USED TO D ...

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