排序方式: 共有146条查询结果,搜索用时 15 毫秒
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实际中的决策问题常常具有不确定性和灰色性。根据灰色系统和模糊数学的一些理论,同时考虑一个问题中的模糊性——隶属度与灰色性——灰度,将其综合起来表示为灰色模糊数的概念。在原有多属性决策(MADM)方法的基础上提出了一种灰色模糊多属性决策模型,并给出了模型的求解方法。待决策的各方案的排序是依据其到灰色模糊理想解的灰色模糊距离大小而进行的。 相似文献
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BTT导弹的新型三维非线性寻的制导律 总被引:4,自引:0,他引:4
建立了导弹与目标的三维相对运动模型,分析了目前寻的制导律的一些局限性,提出了新型非线性寻的制导律。在更复杂的交战环境中,将此制导律用于高性能的BTT导弹,可望提高制导精度 相似文献
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We consider a short‐term capacity allocation problem with tool and setup constraints that arises in the context of operational planning in a semiconductor wafer fabrication facility. The problem is that of allocating the available capacity of parallel nonidentical machines to available work‐in‐process (WIP) inventory of operations. Each machine can process a subset of the operations and a tool setup is required on a machine to change processing from one operation to another. Both the number of tools available for an operation and the number of setups that can be performed on a machine during a specified time horizon are limited. We formulate this problem as a degree‐constrained network flow problem on a bipartite graph, show that the problem is NP‐hard, and propose constant factor approximation algorithms. We also develop constructive heuristics and a greedy randomized adaptive search procedure for the problem. Our computational experiments demonstrate that our solution procedures solve the problem efficiently, rendering the use of our algorithms in real environment feasible. © 2005 Wiley Periodicals, Inc. Naval Research Logistics, 2005 相似文献
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An area defense consists of several groups that act independently, i.e., do not communicate with each other. Each group has a fixed number of defenders and a controller that allocates these defenders optimally against the individual attackers comprising an attack. We analyze the effectiveness of this partially coordinated defense against a simultaneous attack of known size in which all attackers are considered to be equally lethal. © 2004 Wiley Periodicals, Inc. Naval Research Logistics, 2005. 相似文献
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中国对联合国维和行动的贡献 总被引:2,自引:0,他引:2
张慧玉 《中国人民武装警察部队学院学报》2004,20(5):30-32
随着我国改革开放的逐步深入和经济建设的蓬勃发展 ,我国的综合国力不断增强 ,中国参与联合国维和事务的范围和能力也日益扩大 ,投入不断增加 ,这充分体现了中国作为联合国安理会常任理事国在国际事务中的重要作用和影响 相似文献
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应用灰色关联分析理论,以2004~2008年中国火灾成因及后果的统计数据为样本,选取了造成火灾的6种原因,分别以事故起数、伤亡人数、直接经济损失为系统特征,对系统进行了关联度分析和优势分析,为掌握火灾发生规律及进行火灾预防等提供依据。 相似文献