队号19题目B：北京市水资源短缺风险综合评价石家庄铁道大学数学建模竞赛论文领队教师：马祥旺2014年5月18日数学竞赛论文-1-一．摘要···································································································2关键词：···································································································2二．问题重述·····························································································3B题：水资源短缺风险综合评价···········································································3三．问题提出·····························································································4四．建模过程·····························································································4基本假设···································································································4符号说明·····························································································5问题一：···································································································61.构建模糊物元···················································································72.权重系数的熵值法确定·······································································73.权重求解及主要风险因子的确定···························································9结论··································································································12问题二·····································································································13问题三·····································································································15问题四·····································································································17分析思路·········································...
