Abstract: A compact, wideband antenna system includes first and second monopole radiating elements positioned near an edge of a common ground plane. The first and second monopole radiating elements may be located on opposite sides of the ground plane. Additional monopole elements may also be provided. In some embodiments, the ground plane includes an opening in a central region thereof to accommodate an optical system. In some embodiments, an additional antenna (e.g., an array antenna) may be provided over the same ground plane in a region between the monopole elements.

Abstract: A compact, wideband antenna system includes first and second monopole radiating elements positioned near an edge of a common ground plane. The first and second monopole radiating elements may be located on opposite sides of the ground plane. Additional monopole elements may also be provided. In some embodiments, the ground plane includes an opening in a central region thereof to accommodate an optical system. In some embodiments, an additional antenna (e.g., an array antenna) may be provided over the same ground plane in a region between the monopole elements.

Abstract: An interferometric inverse synthetic aperture radar (IFISAR) is described that can provide a height measurement of moving objects on a surface using a small radar aperture. The IFISAR includes a two-dimensional antenna array including a plurality of elements that are configured to receive a plurality of return signals carrying energy of a transmitted RF signal that are reflected from the target. A first antenna group and a second antenna group of the plurality of elements respectively located at opposite ends of the array are enabled, and a third antenna group of the plurality of elements located between the first antenna group and the second antenna group are disabled. A processor of the IFISAR is operatively coupled to the plurality of elements and configured to determine height characteristics of the target according to interferometric processing of the return signals received by the first antenna group and the second antenna group.

Abstract: Disclosed are protein biomarkers and their use in diagnosing head and neck squamous cell carcinoma (HNSCC) or to make a negative diagnosis in patients. Also disclosed are kits for the diagnosis of HNSCC that detect the protein biomarkers of the invention, as well as methods using a plurality of classifiers to make a probable diagnosis of HNSCC. In certain aspects of the invention, the methods include use of a decision tree analysis. Various computer readable media and their use according to the invention are also disclosed.

Abstract: An ultrahigh carbon steel having a composition of carbon in an amount of from about 0.8 weight percent up to the maximum solubility limit of carbon in austenite, aluminum in an amount of from about 0.5 to about 10 weight percent, an effective amount of a stabilizing element acting to stabilize iron carbide against graphitization, and the balance iron. Preferably, the aluminum is present in an amount of from about 0.5 to about 6.4 weight percent and the stabilizing element is chromium. The steel has excellent ductility and is readily hot, warm and cold worked without cracking. It is particularly useful in superplastic forming operations, and may be processed to a suitable microstructure by any technique which reduces its grain size to about 10 microns or less, and preferably to about 1 micron. Such a very fine grain size is readily acheived with the steel, and the aluminum and stabilizing additions act to retain the fine grain size during superplastic processing.

Abstract: Aluminum base alloys characterized by low density, high elastic modulus and high strength and having a composition consisting esentially of aluminum--about 0.5 to about 4.3 weight percent lithium--about 0.02 to about 20 weight percent beryllium.

Abstract: A powder metallurgical method of consolidating iron-based alloy powder, particularly white cast iron, to form a body of high density in which the powder is thermally cycled above and below the alpha-gamma transformation temperature of below 800.degree. C., and a stress of between 1.7 MPa and 34.5 MPa is simultaneously applied to the powder to form a high density consolidated body.

Abstract: An ultrahigh carbon steel consisting of a structure formed by divorced eutectoid transformation with or without accompanying deformation such that substantially no pearlite is formed, having a fine grained iron matrix stabilized by cementite in spheroidized form. A method for processing the steel including heat treatment and mechanical working to form spheroidized proeutectoid carbide particles then reheating the steel for a time such that the carbon is not uniformly distributed in the austentite so that upon cooling, with or without accompanying deformation, a divorced eutectoid transformation occurs leading to a structure of spheroidized cementite in a fine ferrite grain matrix.