Abstract:The use of MCTs in a high-frequency, high-power motor controller requires soft switching. While MCTs are known to possess significant forward drop advantages over IGBTs or MOSFETs, their switching behavior is much more complex. Conventional PWM switching of MCTs at high frequency leads to… more
Abstract:Malaria is a major parasitic disease in humans. Induction of immunity to the sexual stages, found in the mosquito host, is an important element in controlling the parasite. We have devised a conjugate vaccine by coupling protein or hapten-protein to very high molecular weight dextran. This highly… more
Abstract:Early diagnosis and treatment of Lyme disease is associated with an improved clinical outcome,and is recommended to prevent subsequent manifestations such as arthritis and cranial paralysis.Unfortunately, early diagnosis of Lyme disease has been hampered because B.burgdorferi antigens andthe human… more
Abstract:Viewing the horizon is helpful in reducing the symptoms of motion sickness in ship board personnel. Many of a ship's complement are required to constantly monitor visual displays that are fixed to the deck and provide no view of the horizon. Virtual i-O! proposes a research study where horizon… more
Abstract:The use of Kinetic Energy Weapons (KEW) against theater missile threats, such as the SCUD, require fast and accurate aim point determination to maximize the kill probability. It is proposed to incorporate an innovative active three-dimensional (3-D) imager in each KEW seeker to significantly improve… more
Abstract:Visidyne proposes an effort leading to improved tools for measuring the subsurface spatial structure and chemistry of highly turbid media such as mammalian tissue. The technology uses optical photon density waves from laser sources, intensity modulated at microwave frequencies to probe these media.… more
Abstract:Using optical tools such a laser interferometers, the Multiple Degree of Freedom Measurement(MDFM) System developed by the University of Michigan under the ManTech program has demonstrated a high precision calibration capability for Coordinate Measurement Machines (CMMs). Building on that effort… more
Abstract:Electronically steered phase arrays are ideally suited for rapid surface surveillance and sea-spike removal to detect exposed submarine periscopes and cruise missiles. Because of the limited space available on typical warships, the necessary aperature cannot be realized with conventional structures… more
Abstract:The use of computer modeling in the area of design optimizing has become practical due to recent advances in hardware and software technology. Several sophistcated software tools are avialable for three dimensional modeling and dynamic visual and numeric anaylsis of complex surfaces. This proposal… more
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