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Conversion of mechanical forces, vibrations and sound which have energy in the range of milli- to tens of watts (also referred to as “small kinetic energies” in this paper) into electricity has received global attention owing to the potential in powering electronic devices. However, most of the small kinetic energy generators can only generate electric power below 1µW/cm3. As a result, an energy storage...
Traditional physical layer security methods, such as artificial noise, commonly require that the sender has more antennas than that of the receivers, which is not practical in the multicasting system. To solve this problem, a multicarrier-based physical layer security scheme for the multicast systems is proposed, which takes the advantage of both space and frequency domain to form a relatively virtual...
In Dirichlet process (DP) mixture models, the number of components is implicitly determined by the sampling parameters of Dirichlet process. However, this kind of models usually produces lots of small mixture components when modeling real-world data, especially high-dimensional data. In this paper, we propose a new class of Dirichlet process mixture models with some constrained principles, named constrained...
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