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A numerical model based on the finite-difference time-domain method is developed to simulate fluctuations which accompany the dephasing of atomic polarization and the decay of excited state's population. This model is based on the Maxwell-Bloch equations with c-number stochastic noise terms. We successfully apply our method to a numerical simulation of the atomic superfluorescence process. This method...
Despite recent theory development, methods of calibration that accurately recover signals from biased sensor readings remain limited in their applicability. Acoustic sensors, for instance, which have been popular in low power wireless sensor networks, are difficult to calibrate in this manner, given their significant hardware variability, large dynamic range, sensitivity to battery power level, and...
Base on G-Space and partial differential equation, a novel method is proposed for cell image decomposition in this paper. The Vese-Osher (VO) model and Mumford-Shah-G(MSG) model based on G-Space and PDE are introduced for real texture image extraction. An image f can be decomposed into a cartoon part u and a noise/texture part v in both two models. The experimental results show the contrast effects...
Precise load measurement is important and difficult for an industrial scale ball mill in thermal power plant. This paper presents a new approach which combines a novel feature extraction method and a hierarchical model to achieve this purpose. By analyzing the sensitivity distributions of working condition transitions and removing the ineffective information, the characteristic power spectrums (CPS)...
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