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In this paper, nonlinear chaos theory and wavelet transform are applied in modeling and forecasting traffic of wireless sensor network (WSN). Wavelet-weighted local model of chaotic prediction not only takes the advantages of lower and more determinism in chaos theory, but also the advantages of unique multi-resolution analysis in wavelet transform, which can be used to generate a rich set of prediction...
This paper describes a new method for urban high-voltage distribution network planning required by environmental and practical needs. In the traditional network planning, the index system of environmental protection is composed of indices related to radiation, land occupation and environmental compatibility. This paper adds electrical source line index, then model the power line, builds an integrated...
In this paper, we proposed a new speckle suppression method for medical ultrasound images based on contourlet transform. Modeling the speckle with Rayleigh distribution in logarithmically transformed ultrasound images, a maximum a posterior (MAP) estimator is applied for speckle reduction via manipulating the coefficients in contourlet domain. Experimental results show that while effectively suppress...
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