北京水资源短缺风险综合评价数学建模VIP专享VIP免费

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·········································...