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Traditional PSO algorithms suffer form the “curse of dimensionality”, which implies that their performance deteriorates as the dimensionality of the search space increase. This paper presents a variation on the traditional PSO algorithms, called improved cooperative particle swarm optimization, or COPSO, employing cooperative behavior to significantly improve the performance of the original algorithms...
In this paper the assessment of perceived speech quality under packet loss is investigated. Since packet loss would impair the perceived speech quality differently when lost packets are located in different segments in the speech signal, e.g. in speech or silence segments, a new detection method is first proposed to accurately determine the active packets which are related to speech signals only....
The purpose of this paper is systematically studying the problems of pro-poor tourism (PPT) in China based on supply chain management theory. By constructing the PPT supply chain, theoretically prescribed the general development direction and special role of PPT object in the chain, and advanced two strategies, adding assistant nodes and establishing e-business flat of PPT supply chain to improve...
In this paper, some counter-examples are given to analyze deeply several common easily confused basic concepts and theories in unary function calculus. Through the examples, it can seen that we must truly understand the basic concepts of advanced mathematics. In order to learn higher mathematics better; it needs us to have a deep understanding about the concept in unary function calculus. In this...
In migrating workflow system, the migrating instance which behavior is similar to mobile agent is dispatched to execute task on the workplace, so the migrating instance faces the same security problem as the mobile agent. However, most of the present protecting mobile agent security methods are in passive ways. In this paper, we propose a model with the danger detection algorithm to protect migrating...
In order to obtain a precise mathematical model of an autonomous underwater vehicle (AUV), model identification based on maximum likelihood relaxation algorithm is proposed in this paper. With experiment data of zigzag motion, the hydrodynamic derivatives of the AUV are estimated, and ideal convergence of maximum likelihood relaxation algorithm can be obtained from the contrast with normal approach...
This article includes the digital library experience in Xiasha education district of Hangzhou city in China. The first part is the necessity to construct the digital library center in the changing trends of the higher education in China. It appears that the traditional library could not follow the trends of the higher education in China. The second part is the technology experience for building up...
We present an improved texture synthesis algorithm over arbitrary surfaces in this paper. The algorithm adopt the searching strategy of restriction degree to compute the texture coordinates of each triangular patch. It reduces the restrictive conditions as searching for the best matching patches and debases the complexity of the algorithm at the same time. Then aiming at the local boundary unmatching...
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