Results 21 to 30 of about 12,452 (91)

Assessment aggregation with bias factor involved in group decision making(群决策中考虑主观偏袒因素的评价信息综合)

open access: yesZhejiang Daxue xuebao. Lixue ban, 2011
在群决策中,如何将多个决策者的评价信息综合成整体信息是要研究的重要问题.最简单的方法是基于每个决策者是专业并且客观的假设,给他们的评价赋予相同的权重.但是实际情况要复杂得多,正如孔子所说,真正好的,应该是善者好之,不善者恶之.笔者研究了决策者中存在偏袒因素时的评价综合方法,拓宽了 一般权重的约束限制,提出了基于评价之间相关关系的权重设置方法.
DENGMing-rong(邓明荣)   +1 more
doaj   +1 more source

兴凯湖自然保护区生态质量模糊综合评价

open access: yes野生动物学报, 2009
在综合自然保护区生态评价指标体系研究成果的基础上,选取自然性、代表性、多样性、稀有性、适宜性、稳定性和人类威胁等7项指标,运用层次分析法和模糊评价法对兴凯湖自然保护区湿地生态系统进行了生态质量评价。计算得出兴凯湖自然保护区生态系统的综合评价分值为0.7386。评价结果表明该保护区生态质量较好。最后就该保护区目前存在的问题进行分析并提出相应的建议。
刘芳芳, 于洪贤
doaj  

海水淡化项目综合评价指标体系研究

open access: yesGongye shui chuli, 2019
结合海水淡化项目的特点,遵循系统性、可操作性、定性与定量相结合的指标体系构建原则,从项目建设、项目运行、成果与效益、环境影响和可持续能力5个方面开展综合评价指标的选取研究,进而构建海水淡化项目综合评价指标体系。在此基础上,从提高项目决策水平、保障投资收益角度提出了相关建议。
邹川玲, 刘淑静, 张拂坤, 王静
doaj   +2 more sources

皖南低山丘陵区水土保持综合评价

open access: yesShuitu Baochi Xuebao, 2001
为了更好地做好皖南低山丘陵区的水土保持工作,在建立区内水土保持综合评价模型的基础上,对区内水土保持状况进行综合评价,其结果中山区为63.00,低山区为60.03,丘陵区为57.40,盆谷区为65.38.根据评价因子的匹配系数(Cc),提出不同的水土保持对策,以促进区内生态环境的改善.
张理华 周秉根 万荣荣 刘万青
doaj  

基于组合赋权模糊综合评价法的生态美丽湖泊评价研究

open access: yesRenmin Zhujiang
湖泊作为水资源、生物资源以及环境资源的重要载体,是人类赖以生存和发展的重要基础,也是人类社会可持续发展的基本保证。从水安全、水环境、水生态、水景观文化、水管护和社会评价6个方面选取22项指标建立了生态美丽湖泊评价指标体系。利用AHP(Analytic Hierarchy Process)法计算主观权重,EVM(Entropy Value Method)法计算客观权重,通过线性加权组合赋权得出综合权重,运用模糊综合评价法,构建基于最优组合赋权的生态美丽湖泊模糊综合评价模型,并对长荡湖2018 ...
彭欣雨, 丁腾宇
doaj  

江汉平原后湖地区土壤肥力综合评价方法及其应用

open access: yesShuitu Baochi Xuebao, 2001
根据模糊数学和多元数理统计分析原理 ,建立了一个定量的土壤肥力综合评价方法 ,并应用于大比例尺样区的土壤肥力综合评价。首先 ,通过野外调查和室内理化分析 ,选取了 9项评价指标 ,包括全 N、全 P、全 K、速效P、速效 K、物理性粘粒、粉粘比、表土层厚、p H;并根据植物效应建立两类隶属度函数 ,分别计算出隶属度值 ;然后 ,利用 AHP法确定各因子的权重 ,根据隶属度值和权重 ,求出各参评指标的分值及评价单元土壤肥力总分值 ;最后 ,利用聚类分析法将样区土壤肥力划分为五级 ,并借助 GIS软件 ...
周勇 柳洪 等
doaj   +2 more sources

基于变权重的变压器状态模糊综合评价方法

open access: yesGaoya dianqi, 2014
在传统的变压器状态评价方法中,常权无法客观反映变压器部分参数偏离正常值时对整体评价影响。基于此,笔者提出了基于变权重的变压器模糊综合状态评价方法。首先采用层次分析法确定变压器各影响因素指标的权重,然后考虑实际情况对各影响因素权重进行变权处理,减少评价的主观性,使变压器的状态评价结果更为合理。应用文中方法对实际变压器进行状态评价,验证了该方法的合理性和可行性。
李磊, 熊小伏, 沈智健
doaj  

基于模糊综合评价的输电线路综合防雷措施的确定

open access: yesDianci bileiqi, 2019
按照初选措施—计算权值—评估效果—确定措施的流程,提出了一种输电线路综合防雷措施。基于地形地貌、已安装的防雷措施、安全距离对防雷措施进行初选;利用改进层次分析法计算各备选措施的权值,按照权值大小确定综合防雷措施,然后利用模糊综合评价对选出的综合防雷措施的防雷效果进行评估。用该方法在220 kV猇亭电厂至猇亭变进行综合防雷措施的验证,结果证明了该方法的有效性。
向文   +5 more
doaj  

水土保持产业化评价指标体系研究

open access: yesShuitu Baochi Xuebao, 2003
采用分析法和综合法相结合的方法,从水土保持产业化的目标、运动过程和构成要素3个方面设置评价指标,综合分析获得涵盖规模化、效益化、社会化、市场化和商品化的15个指标的水土保持产业化评价指标体系,用九标度专家打分获得指标权重,建立了百分制评价模型,并应用于延河流域水土保持产业化评价,结果能够反映水土保持产业化的发展水平。
赵麦换 张翼 等
doaj   +2 more sources

油气集输站库雷电防护能力模糊评价模型研究

open access: yesDianci bileiqi, 2019
模糊综合评价方法适用于解决一系列受多重因素影响事物的决策问题。模糊综合评价流程包括确定影响因子、计算因子权重、构建模糊矩阵、进行模糊运算、得出评价结论等步骤。在评价模型中,选择不同的模糊算子,评价结果会表现不同的差异性。而对于模糊综合评价的结果,一般采用最大隶属度原则。当隶属度之间差异不明显时,最大隶属度原则可能会出现失效的情况。本文以胜利油田临海油气集输站库雷电防护能力的模糊评价体系作为研究对象,当确定最大隶属度失效时采用加权平均算法可以得到最佳评价结果。同时研究选取不同模糊算子时 ...
齐静静   +3 more
doaj  

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