Li Kong

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By introducing GPRS communication mode, the proposed remote monitoring system for prefabricated substation can realize wireless data transmission not only via GSM network but also via Internet. The main function of the system is to remotely monitor and control the operational status of the substations by mobile monitors and control center. In addition to(More)
In this paper we construct a class of LDPC codes with girth 10 based on 2-D lattices. The parity check matrix is an incident matrix of lines and points in the lattices. By selection of slope sets, general triangles and quadrangles are removed in the lattices which leads to the corresponding codes have girth no less than 10. The codes are regular, whose(More)
To avoid falling into local optimum solution and improve global optimum efficiency and accuracy of particle swarm optimization, a novel particle swarm optimization model with centroid of population is proposed, which can enhance inter-particle cooperation and information sharing capabilities effectively, then the guidelines of parameter selection are(More)
Based on the analysis of the composition of the CIS, this paper presents the CIS information resources model based on Web. Furthermore, the paper is on three respects that are based on the analysis of the model's overall structure. These respects are data acquisition method, which abstracts users' interests by keywords, data analysis technique which is(More)
—According to the intelligent behavior of social population, the centroid of the individual best of particle swarm is firstly introduced in particle swarm optimization (PSO) model to enhance inter-particle cooperation and information sharing capabilities, then combining the mechanism of population migration algorithm (PMA), a novel PSO algorithm with(More)
—According to characteristics of particle swarm optimization algorithm, a novel particle swarm optimization algorithm based on adaptive space mutation (ASM-PSO) is proposed. During the searching process, the convergence speed and globally convergence ability is greatly improved by the adaptive space mutation based on the variance of the population's(More)
According to the intelligent behavior of social population, a novel particle swarm optimization algorithm based on predatory search strategy (PS-CPSO) is proposed by introducing the centroid of particle swarm in the standard particle swarm optimization model to improve global optimum efficiency and accuracy of algorithm. Results of Benchmark function(More)
Based on standard particle swarm optimization, the centroid of particle swarm is introduced in particle swarm optimization to enhance inter-particle cooperation and information sharing capabilities, then combining with ergodicity of the chaotic motion and fast convergence of the simplex algorithm, an improved hybrid particle swarm cooperative optimization(More)