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Many distributed real-time applications, such as electric device monitoring, object tracking and disaster monitoring, require effective and efficient techniques to detect abnormal events of interest in the physical world. Despite the simplicity in implementation, the existing threshold-based approach to event detection suffers from limited expressive power and poor tolerance to missing values and...
Some pipe lines of a nuclear power plant exists serious vibration that seriously affected the normal production safety. By the spectral analysis of measured time domain signal, the main vibration frequency of the pipe lines was obtained. The model analysis was processed with pipe stress analysis software CAESAR II. The natural frequency was found. According to the causes of pipe lines vibration, the...
A calculation model for simply supported box beam is established in the paper, and its natural frequency and vibration mode are analyzed through theoretical analysis and numerical simulation. The influence of elastic support to the beam frequency is also discussed, which showed that the elastic has great effect on beam frequency. Lastly, it can be concluded that the beam frequency can satisfied technical...
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