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In information systems, data in an object may illegally flow into another object if transactions read and write the objects. A transaction illegally reads an object if data in objects which the transaction is not allowed to read are stored in the object. In addition, it is specified data in which object is allowed to flow to other objects. A suspicious object is an object which is not allowed to flow...
The electric power consumed by servers has to be reduced in order to realize green societies. We consider computation (CP) and storage (ST) types of application processes performed on servers in this paper, where CPU and storage drives are mainly consumed, respectively. The authors proposed the storage-based power consumption (SBPC) model and storage-based computation (SBCP) model to perform ST and...
In peer-to-peer (P2P) overlay networks, a group of multiple peers have to cooperate with each other. P2P systems are in nature scalable distributed systems, where there is no centralized coordinator. It is difficult for each peer to communicate with every other peer. An acquaintance peer of a peer is another peer with which the peer can directly communicate. Each peer has to obtain access and location...
In peer-to-peer (P2P) overlay networks, a group of multiple peers have to cooperate with each other. P2P systems are in nature scalable distributed systems, where there is no centralized coordinator. It is difficult, maybe impossible for each peer to communicate with every other peer in P2P overlay networks. An acquaintance peer of a peer is another peer with which the peer can directly communicate...
In this paper, we consider the peer-to-peer (P2P) model as a fully distributed, scalable system different from centralized coordinated systems like Cloud computing systems. A P2P system is composed of peer processes (peers). Here, applications are realized in activities and cooperation of a group of multiple peers. Since there is no centralized coordination in P2P systems, each peer has to obtain...
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