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基于交互耦合网络的项目组合决策模型研究 被引量:3
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作者 赵静 郭鹏 贾颖颖 《运筹与管理》 CSSCI CSCD 北大核心 2017年第4期76-83,共8页
随着项目活动进入"大尺度"时代,复杂性成为现代化项目组合管理中的突出问题。在项目组合决策系统复杂性分析基础上,提出了交互耦合网络视角下的项目组合决策系统表征方法;借鉴非线性动力学建模方法构建项目组合决策系统复杂... 随着项目活动进入"大尺度"时代,复杂性成为现代化项目组合管理中的突出问题。在项目组合决策系统复杂性分析基础上,提出了交互耦合网络视角下的项目组合决策系统表征方法;借鉴非线性动力学建模方法构建项目组合决策系统复杂动力网络模型,结合模型的稳定解和稳定条件将项目组合决策系统划分为竞争型、共生型、强依存型和弱依存型,并通过数值仿真方法对系统的稳定域、分岔和混沌进行分析。研究表明,项目组合决策系统的复杂性和稳定性依赖于系统内交互关系作用,改善协作关系,避免过分竞争,以系统整体为先优化配置有利于项目组合目标实现。 展开更多
关键词 项目组合决策 交互耦合网络 复杂动力网络模型
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Modeling and Dynamic Analysis in Software Systems Based on Complex Networks
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作者 Gao Yang Peng Yong +2 位作者 Xie Feng Dai Zhonghua Xu Guo'ai 《China Communications》 SCIE CSCD 2012年第12期137-143,共7页
A software network model with multiple links is constructed on the basis of a dynamical model of a general complex network with mukiple links. The principle of network division of multiple links is introduced. Followi... A software network model with multiple links is constructed on the basis of a dynamical model of a general complex network with mukiple links. The principle of network division of multiple links is introduced. Following these principles, the software network model is decomposed into three types of subnets and different relationships between classes are revealed. Then, the dynamic analysis of software networks is presented. A sufficient condition for the stability of general complex networks is obtained followed by that of software networks. Finally, the dynamics of an open-source software system is analyzed, and their simulations are provided to demonstrate the effectiveness of the presented model. 展开更多
关键词 software networks multiple links network division subnets dynamic analysis
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SPREADING DYNAMICS OF A DISEASE-AWARENESS SIS MODEL ON COMPLEX NETWORKS
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作者 BEI LIN HENLONG SUN +1 位作者 XINCHU FU GUANGHUZHU 《International Journal of Biomathematics》 2013年第4期99-111,共13页
In this paper, to better understand the impact of awareness and the network structure on epidemic transmission, we divide the population into four subpopulations corresponding to different physical states and consciou... In this paper, to better understand the impact of awareness and the network structure on epidemic transmission, we divide the population into four subpopulations corresponding to different physical states and conscious states, and we first propose a modified disease- awareness model, then verify the global stability of the disease-free and endemic equilib- ria, and finally present numerical simulations to demonstrate the theoretical analysis. By examining the spreading influences of model parameters, we find that the outbreak scale can be effectively controlled through increasing the spread rate of awareness or reducing the rate of awareness loss. That is to say, all sorts of media publicity are meaningful. Meanwhile, we find that infection will be affected by consciousness through the control variable. 展开更多
关键词 Individual movement AWARENESS UNAWARENESS global stability
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