6,536 research outputs found

    A Fast Frequency Sweep – Green’s Function Based Analysis of Substrate Integrated Waveguide

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    In this paper, a fast frequency sweep technique is applied to the analysis of Substrate Integrated Waveguides performed with a Green’s function technique. The well-known Asymptotic Waveform Evaluation technique is used to extract the Padè approximation of the frequency response of Substrate Integrated Waveguides devices. The analysis is extended to a large frequency range by adopting the Complex Frequency Hopping algorithm. It is shown that, with this technique, CPU time can be reduced of almost one order of magnitude with respect to a point by point computation

    Human Security in a Borderless World

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    The authors, professors in professional military education in the U.S. Navy (Reveron) and the U.S. Air Force (Mahoney-Norris), bring more than sixty years of collective expertise as military officers and educators to their subject—“human security,” which they define as “a people-centered approach focused on individual human beings and their rights and needs.” The au- thors’ purpose is to transcend the traditional national-security model rooted in the so-called realist school of international relations and offer a broader construct that examines a continuum of interrelated issue areas that affect individuals and groups in ways that cumulatively influence and shape regional and international security
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