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System reliability directly affects the realization of software‐intensive system functions, which rely on both hardware and software. The operating status of hardware and software affect each other, and the continuous accumulation of their degraded performances will accelerate the occurrence of failures. However, the interaction relationship between hardware and software is often overlooked in most...
Large cascading failures are present in most of infrastructure networks. This paper reviews the problem of cascades of overload failures on nodes in the security of complex networks. Here we propose a nonlinear load-capacity model for cascading failures based on the dynamical redistribution of the flow on the network. The simulation was executed on the weighted scale-free network and Internet AS level...
Data aggregation has been emerged as a basic approach in wireless sensor networks (WSNs) in order to reduce the number of transmissions of sensor nodes. In this paper, we propose an energy-efficient model based on improved BP neural network by particle swarm optimization (PSO-BPNN) in WSNs. The global optimized initial weights and threshold of BP network are obtained by PSO. And then PSO-BPNN is deployed...
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