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—There is renewed interest in the use of non-Foster circuit elements in a variety of important applications such as wideband impedance matching and artificial magnetic conductors. Although non-Foster devices such as negative capacitors and negative inductors can be realized using current conveyors and Linvill circuits, a digital design approach may offer an(More)
There is an increasing realization of the need to share sensitive information across organizational boundaries; much of it in textual form. While search and information retrieval technology has progressed significantly, it assumes an open environment. Providing these capabilities when the information, and the need for that information, are sensitive and(More)
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