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The paper presents a hierarchical organization of two storage redundancy schemes to improve data availability caused by churn in structured overlay networks. To mask or hide the high churn from the portion of short-lived but frequent churn peers and permanent failure peers, we use replication among the nodes in a certain interval that can be considered as a virtual node. Then a set of virtual nodes...
Understanding the dynamics of the power output of a wind farm is important to the integration of large scale wind energy into the power system. In a large complex dynamic engineering system, such as a wind farm, clustering is an effective way to reduce the model complexity and improve the understanding of its local dynamics. The paper proposes a novel methodology to cluster wind turbines of a wind...
In many uncertain complex systems it is observed that the system trajectories cluster in several subsets of the state space. In this paper we model the system behavior as a Markov process and consider the problem of finding a low dimensional approximation of the process that captures the clustering phenomena. Furthermore, we concentrate on Markov chain approximations on a finite state space of large...
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