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Multicast is an important way to diffuse data in duty-cycled wireless sensor networks (WSNs), where nodes can receive data only in active state. The communication delay can be extremely large if inappropriate schedules are adopted. Unfortunately, most previous methods do not consider controlling multicast delay energy-efficiently. This paper studies the minimum active time slot augmentation for delay-bounded...
Gearbox fault signal has non-stationary and non-linear features, conventional spectral analysis methods all have their own limitations. This paper presents the method of combining empirical mode decomposition (EMD) and cepstrum analysis, and develops a gearbox fault detection system based on LABVIEW. Practical tests show that each signal could be decomposed into a number of intrinsic mode functions(IMFS)...
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