Variable sets method for urban flood vulnerability assessment

查看全文 作　　者：CHEN [1]ShouYu;XUE [1]ZhiChun;LI [1]Min;ZHU [1]XuePing

机构地区：[1]School of Hydraulic Engineering, Dalian University of Technology

出　　处：《Science China(Technological Sciences)》索引2013年第56卷第12期,共8页

基　　金：supported by the National Natural Science Foundation of China(Grant Nos.51209032,51379027,51109025);Specialized Research Fund for the Doctoral Program of Higher Education(Grant No.20100041120004);the Fundamental Research Funds for the Central Universities(Grnat No.DUT13JS06) 摘　　要：On the basis of dialectics basic laws and mathematical theorems of variable sets,this paper proposes a variable sets method for urban flood vulnerability assessment.In this method,the comprehensive relative membership degree of multi-indices is represented by an index relative difference degree,which follows the characteristics of dialectical philosophy and mathematics.According to the quality-quantity exchange theorem,the relative difference degree of two adjacent levels(h and h+1),whose index standard interval values cross the boundaries,equals 0 in the urban flood vulnerability assessment.On the basis of the opposite unity theorem,the sum of relative membership degrees should be equal to 1 when indices lie in the adjacent degrees h and h+1.The variable sets method is proved to be theoretically rigorous and computationally simple.This paper takes 29 cities of Hunan province as an example to assess the urban flood vulnerability,and then compares the results from this newly developed method with the assessment results obtained from the fuzzy comprehensive evaluation and fuzzy set pair analysis methods. 关键词：脆弱性评估城市防洪模糊综合评判相对隶属度数学定理集对分析方法对立统一辩证法

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Variable sets method for urban flood vulnerability assessment

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