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突发事件下城市供水系统需求的综合评价研究——基于系统弹性的分析视角 被引量:1
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作者 刘健 倪麟 《生态经济》 北大核心 2017年第7期127-133,共7页
为实现突发事件应急恢复的系统弹性,有效度量和评价城市供水系统的需求重要度,提出了考虑加权距离信息的初始直接需求度量模型,给出了一个基于改进DANP模型和熵权法的考虑主客观权重的应急决策系统需求重要度综合评价方法,并针对咸潮情... 为实现突发事件应急恢复的系统弹性,有效度量和评价城市供水系统的需求重要度,提出了考虑加权距离信息的初始直接需求度量模型,给出了一个基于改进DANP模型和熵权法的考虑主客观权重的应急决策系统需求重要度综合评价方法,并针对咸潮情景下供水系统需求重要度评价指标体系展开实证研究。研究结果表明,改进的DANP模型能够克服以往研究的问题和不足,反映了城市供水系统初始应急需求与总需求的客观化建模过程,而且在影响关系判别过程中充分考虑了系统元素集的自我影响关系和影响性质,保证了评价决策的排序方案更符合实际,为城市供水系统应急恢复的需求重要度评价决策提供新思路。 展开更多
关键词 系统弹性 加权距离信息 影响性质 DEMATEL方法
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Synchronization Stability in Weighted Complex Networks with Coupling Delays 被引量:1
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作者 WANG Qing-Yun DUAN Zhi-Sheng +1 位作者 CHEN Guan-Rong LU Qi-Shao 《Communications in Theoretical Physics》 SCIE CAS CSCD 2009年第4期684-690,共7页
Realistic networks display not only a complex topological structure, but also a heterogeneous distribution of weights in connection strengths. In addition, the information spreading through a complex network is often ... Realistic networks display not only a complex topological structure, but also a heterogeneous distribution of weights in connection strengths. In addition, the information spreading through a complex network is often associated with time delays due to the finite speed of signal transmission over a distance. Hence, the weighted complex network with coupling delays have meaningful implications in real world, and resultantly gains increasing attention in various fields of science and engineering. Based on the theory of asymptotic stability of linear time-delay systems, synchronization stability of the weighted complex dynamical network with coupling delays is investigated, and simple criteria are obtained for both delay-independent and delay-dependent stabilities of synchronization states. The obtained criteria in this paper encompass the established results in the literature as special cases. Some examples are given to illustrate the theoretical results. 展开更多
关键词 weighted complex networks coupling delays synchronization stability
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