Takumi Sugiura

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INTRODUCTION CLEAN-ROOM technologies have changed from whole-area down-flow systems, which make all areas high-cleanliness ones, to “localized” cleaning environments by means of “mini environments”— namely, an enclosed, local clean environment (1),(2) (see Fig. 1). A classic example of this shift is a semiconductor fabrication plant for 300-mm-diameter(More)
Nowadays, P2P network has become one of the most important technologies of Internet. Also, P2P file sharing network is now irreplaceable infrastructure for content distribution. At the same time, the network is becoming larger which resulting in that analyzing node distribution in the view of security concerns. In this paper, we propose a fast ranking(More)
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