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This paper investigates how to achieve secure information transmission in multi-cell multi-user networks, where artificial noise (AN) aided multi-cell coordinated beamforming (MCBF) is designed to guarantee the authorized users' QoS requirements while avoiding the information being intercepted by unauthorized users. To realize the green communication target, we formulate an optimization problem to...
In this paper, the fault diagnosis problem is studied for progressing cavity pump well base on wavelet package and Elman neural network. The signals of active power can fully reflect the status of progressing cavity pump wells. A new fault diagnosis method for cavity pump wells is presented. This method uses wavelet time-frequency analysis technology for de-noising and filtering of active power signals,...
The immune evolutionary mechanism of artificial immune system is used into Particle Swarm Optimization(IEPSO). A new training algorithm in wavelet neural networks(WNNs) based on IEPSO is presented, it can avoid early ripe of PSO and traditional BP algorithm. In the course of optimizing the parameters of WNNs, new algorithm use the immune evolutionary principle to improve the process of PSO, it determines...
Magnetocardiography (MCG) is a risk-free and noninvasive technique with significant diagnostic value. The reconstruction of the cardiac sources on MCG data obtainable is an important research in the electrophysiological study. In this paper, we evaluate the classification of the source models and conduction models, and analyze the corresponding methods on estimation of source distribution and conduction...
The concept of category came from the research of system science, which not only needed discuss the property of system itself but also the relationship between different systems. So we need to trade the system as an entirety and use the theory of category. Category is a basic concept of homological algebra and is created by Eilenberg and Maclane in 1945, has been applied to many fields of mathematics[1]...
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