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Hunan, China

Yu S.,Hunan Business College
ICCSE 2010 - 5th International Conference on Computer Science and Education, Final Program and Book of Abstracts

In data processing of the supermarket, people often use the Apriori algorithm to analyze the customer "shopping basket"; Due to the large computation, Apriori algorithm has controlled the number of frequent item sets by using the minimum supporting threshold and pruning techniques, but meaningless frequent item sets still possiblely exist. Divide goods into several broad categories and set up the weighted value of categories; Then, calculate the weighted support and confidence, and do pruning and selection according to the minimum weighted support and confidence threshold to get access to the new frequent item sets and association rules and improve the efficiency of the algorithm. ©2010 IEEE. Source

Li B.-X.,Central South University | Li B.-X.,Hunan Business College | Li M.-S.,Central South University
Proceedings - 3rd International Conference on Information Management, Innovation Management and Industrial Engineering, ICIII 2010

Analyze the influential factors of knowledge transfer capacity between enterprises in green supply chain. Establish an assessment indexes system from three aspects: the capacity of knowledge sender, the capacity of knowledge receiver and the interactive capability through synthesizing the influencing factors. Make fuzzy comprehensive assessment the on knowledge transfer capacity between enterprises in green supply chain by using the weight of indexes calculated out by Analytic Hierarchy Process and by using the statistical result of questionnaire. © 2010 IEEE. Source

Zhou W.,Huazhong University of Science and Technology | Zhou W.,Hunan Business College | Luo F.,Huazhong University of Science and Technology | Zhihuayu,Huazhong University of Science and Technology | Li B.,Huazhong University of Science and Technology

Taking into account the linear loss of silicon-on-insulator (SOI) waveguide, modulation instability (MI) induced by combined effects of self-phase modulation and waveguide dispersions is investigated. The impacts of various parameters to gain spectra of MI are analyzed theoretically, and direct numerical simulation of nonlinear Schroedinger equation is performed as well. Results show that strong MI takes place even in the existence of low light power. The linear loss of waveguide obviously impacts gain spectra of MI, even within ultra-short propagation distance. The peak gain frequency and bandwidth of gain spectra decrease to 41.683% and 41.6879% of their maximum at propagation distance z = 5 mm, respectively. © 2010 Published by Elsevier GmbH. All rights reserved. Source

Li Z.,Hunan Normal University | Li Z.,Hunan Business College | Mao D.,Hunan Normal University | Feng C.,Hunan Normal University
Journal of Natural Disasters

Analysis of Linan polder dike engineering shows that situation of the Linan dike project is not optimistic. Dike engineering risk analysis is of great significance for flood control planning enactment, dike construction and strengthening, and flood control and wrecking. Thus an analysis model of comprehensive risk, including overtopping risk, slope instability risk and seepage risk, was established, and was used calculate the comprehensive risk of a typical example of the Liujiahe to Gangkouhe section of Linan polder. Results show that the overtopping risk rate is 5. 41%, seepage risk rate is 2. 086%, and slope instability risk rate is 0. 338%. Therefore, the comprehensive risk rate of the section is 7. 834%. Source

Liu Y.,Hunan Business College
Applied Mathematics and Information Sciences

Fast evaluation of oscillatory integrals is an issue attracts much attention in many fields. In this paper, we are interested in the calculation of canonical oscillatory integrals, and the irregular oscillatory integrals are transformed into canonical ones with respect to the presences of stationary phase points or not. An improved-Levin method is proposed to calculated the canonical oscillatory integral, where the eigen-decomposition is employed to solve the target system of linear equation, and a much higher efficiency is yielded in comparison with the direct solution methods such as the Gaussian elimination. © 2012 NSP Natural Sciences Publishing Cor. Source

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