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Aiming at the cluster head in the Leach existing in the quick energy consumption problem, an improved cluster protocol is advanced in this paper. The improved protocol can be separated into two stages such as cluster organization stage and the steady operation stage. In the cluster organization stage, the election of cluster head considers both energy and(More)
In this paper, we propose mechanisms to extend the lifetime of wireless sensor networks. In-network data aggregation is considered on both tree-based and flow-based routing protocols during the process of data collection to reduce redundant transmissions. In tree-based data collection schemes, we adjust the tree structure judiciously to balance energy(More)
  • Xie Chun
  • 2012 International Conference on Industrial…
  • 2012
In order to improve the information of original image, a quantization algorism of wavelet tree is proposed. The algorism can change the value of the root node of the wavelet tree to embed the watermarking information and combine the position information of the sub-node to correct the mistaken information. The common attacks such as median filtering, average(More)
To solve the problem of classic Petri net can not describe the complex relations between the fault and its cause, the fuzzy logical theory, the weight and colored Petri net were combined to form a new formalized method for diagnosis and a constructing method for constructing the fault diagnose model is proposed, and the algorism for using the model to(More)
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