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Death of part of the nodes in wireless sensor network is a key problem to affect lifetime of the whole network. To avoid early death of such nodes, we put forth a children parent scheme implemented with Leach protocol. The children parent scheme allows supplement of nodes when some node runs out of energy due to causes such as hot spot or unbalanced network topology. Experiment results show the scheme...
In this paper, an effective hybrid algorithm based on particle swarm optimization (PSO) and simulated annealing (SA) is proposed for solving the minimum makespan problem of the job shop scheduling problem (JSSP). The hybrid algorithm combines the high global search efficiency of PSO with the powerful ability to avoid being trapped in local minimum of SA. In the particle swarm system, a novel concept...
With the rapid development of the network, it is necessary to know its internal characteristics, so to design, control and manage the network. At present, network measurement is mainly deployed to acquire internal characteristics of the network and identify network topology. Network Tomography technology is one of the network measurement methods. Inference of network internal link characteristics...
We propose an improved regularized phase-tracking (RPT) technique for unwrapping two-dimensional principal phase maps. The size of the neighborhood selected for plane approximation at each pixel is adjustable according to local noise severity. In the area of low noise, the size is small to improve processing speed. On the contrary, a neighborhood with large size is selected to enhance the noise-reduced...
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