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Due to the relatively low bandwidth of WAN (Wide Area Network) that supports cloud backup services, both the backup time and restore time in the cloud backup environment are in desperate need for reduction to make cloud backup a practical and affordable service for small businesses and telecommuters alike. Existing solutions that employ the deduplication technology for cloud backup services only focus...
For the variable speed operation of large scale wind turbine, the vibrations become key problem that can not be ignored. In this paper, the active vibration control based on neural network PID control strategy was researched. Firstly, PID control algorithm was analyzed. Then, the PID control based on neural network was described especially BP network and its algorithm. In the end, this control method...
Prefetching is an effective technique for improving file access performance, which can significantly reduce access latency for I/O systems. In distributed storage systems, prefetching for metadata files is critical for the overall system performance. In this paper, an affinity-based metadata prefetching (AMP) scheme is proposed for metadata servers in large-scale distributed storage systems to provide...
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