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The efficiency, cost, and truthfulness are essentially about the exhibition of product design (PD) as well as in a rapidly changing and keenly competitive environment. The work presented in this paper focuses on presenting a new kind of product exhibiting method of PD, which introduced virtual reality (VR) into the course of exhibition of PD. In this paper, we bring up the structure model of the virtual...
While essentially all the frequency is allocated to different wireless applications, observations provide evidence that usage of the spectrum is actually quite limited. Fortunately, cognitive radio technology offers an attractive solution to the reuse of under-utilized licensed spectrum. Therefore, proper channel selection mechanism and channel quality metric are essential to exploit the benefits...
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