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The heterogeneous drive (HDrive), which combines solid-state disk (SSD) and HDD, brings opportunity for energy-saving and has received extensive attention recently. This paper focuses on the file buffering schemes and adaptive disk power management (DPM) scheme for HDrive. As for the first issue, we propose a frequency–energy based replacement (FEBR) scheme based on an energy-cost model; as for the...
Sensing coverage and energy consumption are two primary issues in wireless sensor networks. The performance of a sensor network depends to a large extent on the sensing coverage, and its lifetime is determined by its energy consumption. In real- world applications, it is unrealistic to guarantee all sensors have the same energy because they have different energy consumption. Moreover, sensors redeployment...
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