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An investigation of open-contact failures in semiconductor devices is common issue. As we changed the cleaning condition of the contact, open failure happened. This contact has nitride in it and recess profile under it. To solve ambiguous fail mechanism we used various analysis methods. Especially, double XTEM sample image was the key and we confirmed the mechanism by reproducing experiment.
In the mobile environment, effective use of limited energy of mobile devices is ever required. Especially, in a mobile peer-to-peer (P2P) system, if a mobile device uses all its energy up, it can no longer participate in the system. Furthermore, as the number of peers without energy increases, so does the file search failure rate of the system. In this paper we present an energy-effective routing...
In the double-layered mobile peer-to-peer (P2P) systems, peers are classified into two types, super peers and sub-peers; a super peer manages its sub-peers. The communications are done mostly among super peers to reduce the network traffic in searching files. In mobile networks, reliability that guarantees communications among peers is one of the crucial factors. However, most of the previous P2P...
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