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Abstract: In response to the issue of random interference in bearing vibration signals in noisy environments, an improved DBO optimized VMD wavelet threshold denoising method is proposed. The key to ...

Abstract: Intelligent reflecting surface (IRS) is an enabling technology to engineer the radio signal propagation in wireless networks. By smartly tuning the signal reflection via a large number of ...

Consistent SQL practice across varied platforms builds real job-ready confidence. Guided lessons help beginners, while timed challenges sharpen interview performance. Real datasets improve practical ...