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fuzzy analysis Method for Orthogonal Test on Seed Propagation of Eurya chinensis

Agricultural Science & Technology 2015年第8期16卷 1639-1642页

作者：叶耀雄黄倩琳翟欣周永东叶永昌东莞市林业科学研究所广东东莞523106

fuzzy analysis method for orthogonal test was used to study the effect of different sowing depth, seed soaking time, illumination intensity and culture soil on the seed germination rate of Eurya chinensis. The results showed that the effect of seed soaking time on the sowing and seedling of Eurya chinensis was the biggest, and the ethers were illumination intensity, sowing depth and culture soil. The germi- nation rate was the highest when composite soil was used as culture soil and seeds were soaked for 48 h and sowed in topsoil, and a layer of sunshade net was used.

关键词： Eurya chinensis Seed propagation Orthogonal test fuzzy analysis

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fuzzy Global Stability analysis of the Dynamics of Malaria with fuzzy Transmission and Recovery Rates

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American Journal of Operations Research 2021年第6期11卷 257-282页

作者： Yves Tinda Mangongo Joseph-Désiré Kyemba Bukweli Justin Dupar Busili Kampempe Department of Mathematics and Computer Science Faculty of Sciences University of Kinshasa Kinshasa D.R. Congo

In this paper, fuzzy techniques have been used to track the problem of malaria transmission dynamics. The fuzzy equilibrium of the proposed model was discussed for different amounts of parasites in the body. We proved that when the amounts of parasites are less than the minimum amounts required for disease transmission (), we reach the model disease-free equilibrium. Using Choquet integral, the fuzzy basic reproduction number through the expected value of fuzzy variable was introduced for the fuzzy Susceptible, Exposed, Infected, Recovered, susceptible-Susceptible, Exposed and Infected (SEIRS-SEI) malaria model. The fuzzy global stabilities were introduced and discussed. The disease-free equilibrium is globally asymptotically stable if or if the basic reproduction number is less than one (). Whe

关键词： Malaria fuzzy analysis fuzzy Basic Reproduction Number fuzzy Variable Credibility Measure fuzzy Equilibrium fuzzy Global Stability

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Power Incomplete Data Clustering Based on fuzzy Fusion Algorithm

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Energy Engineering 2023年第1期120卷 245-261页

作者： Yutian Hong Yuping Yan Guangdong Electric Power Information Technology Co. Ltd.Guangzhou520000China Guangdong Power Grid Co. Ltd.Guangzhou520000China

With the rapid development of the economy,the scale of the power grid is *** number of power equipment that constitutes the power grid has been very large,which makes the state data of power equipment grow *** multi-source heterogeneous data have data differences,which lead to data variation in the process of transmission and preservation,thus forming the bad information of incomplete ***,the research on data integrity has become an urgent *** paper is based on the characteristics of random chance and the Spatio-temporal difference of the *** to the characteristics and data sources of the massive data generated by power equipment,the fuzzy mining model of power equipment data is established,and the data is divided into numerical and non-numerical data based on numerical *** the text data of power equipment defects as the mining ***,the Apriori algorithm based on an array is used to mine *** strong association rules in incomplete data of power equipment are obtained and *** the change trend of NRMSE metrics and classification accuracy,most of the filling methods combined with the two frameworks in this method usually show a relatively stable filling trend,and will not fluctuate greatly with the growth of the missing *** experimental results show that the proposed algorithm model can effectively improve the filling effect of the existing filling methods on most data sets,and the filling effect fluctuates greatly with the increase of the missing rate,that is,with the increase of the missing rate,the improvement effect of the model for the existing filling methods is higher than 4.3%.Through the incomplete data clustering technology studied in this paper,a more innovative state assessment of smart grid reliability operation is carried out,which has good research value and reference significance.

关键词： Power system equipment parameter incomplete data fuzzy analysis data clustering

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Research on shape parameters of circular arc disc teeth for three-cone bit

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Petroleum 2018年第1期4卷 108-114页

作者： Qin Hu Huan Zhu Hang Ren School of Electromechanical Engineering Southwest Petroleum UniversitySichuan 610500China

Through the single row drilling experiment,this paper studied the regularity of the tooth shape parameter's influence to the disc teeth's rock-breaking effect,which provided some basis for the composite teeth type roller bit's combined experimental study and the structure design of the tooth *** experimental research is only for the circular arc disc teeth which is arranged on the composite teeth type roller bit's main *** experiments were designed using the method of orthogonal design and the results were analyzed by the fuzzy optimization *** results show that the disc tooth's drilling effect is the best when the tip diameter is 2 mm,taper angle is 30and the groove number is 8,and the disc tooth's drilling effect is the second best when the tip diameter is 3 mm,taper angle is 30and the groove number is *** above two combined ways of drilling effect's difference is very small(the difference of the degree of the membership is 0.003).

关键词： Tooth shape parameters Rock-breaking experiments Orthogonal design fuzzy analysis

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