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城市基础设施网络关联响应研究 被引量:3
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作者 毛子骏 费奇 +1 位作者 廖元文 欧阳敏 《华中科技大学学报(自然科学版)》 EI CAS CSCD 北大核心 2009年第2期64-67,共4页
为了研究灾害在基础设施网络间的传播情况,提出一种基于复杂网络的基础设施网络关联响应的计算方法.给出基础设施系统的网络模型描述规则,并以华中地区某城市的供水和供电系统为例建立了基础设施系统关联响应模型.给出了网络关联响应因... 为了研究灾害在基础设施网络间的传播情况,提出一种基于复杂网络的基础设施网络关联响应的计算方法.给出基础设施系统的网络模型描述规则,并以华中地区某城市的供水和供电系统为例建立了基础设施系统关联响应模型.给出了网络关联响应因子的定义,研究了城市供水网络和供电网络在随机失效和蓄意攻击下关联因子的变化,结果表明:攻击发生时,关联响应因子先增加后减少,随机攻击时的关联因子比蓄意攻击时要大. 展开更多
关键词 供水网络 供电网络 关联系统 复杂网络 基础设施保护
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A Security Enhancement Model Based on Switching Edge Strategy in Interdependent Heterogeneous Cyber-Physical Systems 被引量:1
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作者 Dandan Zhao Can Liu +4 位作者 Guangquan Xu Zhiguo Ding Hao Peng Juan Yu Jianmin Han 《China Communications》 SCIE CSCD 2022年第2期158-173,共16页
With the advent of cross-domain interconnection,large-scale sensor network systems such as smart grids,smart homes,and intelligent transportation have emerged.These complex network systems often have a CPS(Cyber-Physi... With the advent of cross-domain interconnection,large-scale sensor network systems such as smart grids,smart homes,and intelligent transportation have emerged.These complex network systems often have a CPS(Cyber-Physical System)architecture and are usually composed of multiple interdependent systems.Minimal faults between interdependent networks may cause serious cascading failures between the entire system.Therefore,in this paper,we will explore the robustness detection schemes for interdependent networks.Firstly,by calculating the largest giant connected component in the entire system,the security of interdependent network systems under different attack models is analyzed.Secondly,a comparative analysis of the cascade failure mechanism between interdependent networks under the edge enhancement strategy is carried out.Finally,the simulation results verify the impact of system reliability under different handover edge strategies and show how to choose a better handover strategy to enhance its robustness.The further research work in this paper can also help design how to reduce the interdependence between systems,thereby further optimizing the interdependent network system’s structure to provide practical support for reducing the cascading failures.In the later work,we hope to explore our proposed strategies in the network model of real-world or close to real networks. 展开更多
关键词 security enhancement switching edge strategy interdependent systems cyber-physical systems
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关联基础设施系统脆弱性分析 被引量:6
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作者 王淑良 岳昕 《计算机应用研究》 CSCD 北大核心 2014年第4期976-980,996,共6页
鉴于基础设施系统对社会生产和人民生活的重要性,分析基础设施系统的脆弱性,提出相应的抗干扰措施和改进策略,提高基础设施系统的可靠性,成为了当前研究的一个热点课题。基于此,在对基础设施系统脆弱性分析成果的基础上,从方法论的角度... 鉴于基础设施系统对社会生产和人民生活的重要性,分析基础设施系统的脆弱性,提出相应的抗干扰措施和改进策略,提高基础设施系统的可靠性,成为了当前研究的一个热点课题。基于此,在对基础设施系统脆弱性分析成果的基础上,从方法论的角度探讨了关联基础设施系统的脆弱性,并以华中地区某城市电力—供水网络为例分析了网络在节点级联故障下的脆弱性,为控制基础设施系统的级联故障、增强系统的抗干扰能力提供决策支持。 展开更多
关键词 关联基础设施系统 复杂网络 脆弱性分析 基础设施保护
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关联基础设施网络在级联故障下的脆弱性研究 被引量:3
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作者 王淑良 陈学广 《计算机仿真》 CSCD 北大核心 2014年第8期310-316,共7页
为研究电力-天然气级联故障和系统间的关联性对基础设施脆弱性的影响,采用复杂网络理论与方法,以华中地区某城市电力-天然气网络为例分析了关联基础设施网络在级联故障下的脆弱性。通过对电力、天然气网络的功能特性以及网络之间的关联... 为研究电力-天然气级联故障和系统间的关联性对基础设施脆弱性的影响,采用复杂网络理论与方法,以华中地区某城市电力-天然气网络为例分析了关联基础设施网络在级联故障下的脆弱性。通过对电力、天然气网络的功能特性以及网络之间的关联关系与接口设计标准进行建模,得到了网络的全局脆弱性和最优接口。同时利用网络的关键组件辨识方法,得到了网络的脆弱性指标,为控制基础设施系统的级联故障、增强系统的抗干扰能力提供了决策支持。 展开更多
关键词 关联基础设施网络 复杂网络 脆弱性分析 基础设施保护
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Controllability of heterogeneous interdependent group systems under undirected and directed topology
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作者 Hui-Qin Pei Shi-Ming Chen 《Chinese Physics B》 SCIE EI CAS CSCD 2018年第10期642-651,共10页
The controllability problem of heterogeneous interdependent group systems with undirected and directed topology is investigated in this paper. First, the interdependent model of the heterogeneous system is set up acco... The controllability problem of heterogeneous interdependent group systems with undirected and directed topology is investigated in this paper. First, the interdependent model of the heterogeneous system is set up according to the difference of individual characteristics. An extended distributed protocol with the external sliding-mode control is designed, under which it is shown that a heterogeneous interdependent group system is controllable when the corresponding communication topology is controllable. Then, using the network eigenvalue method, the driving individuals are determined for a heterogeneous system with undirected topology. Under directed topology, the maximum match method is utilized to confirm the driving individuals. Some sufficient and necessary conditions are presented to assure that the heterogeneous interdependent group system is structurally controllable. Via theoretical analysis, the controllability of heterogeneous interdependent systems is related to the interdependent manner and the structure of the heterogeneous system. Numerical simulations are provided to demonstrate the effectiveness of the theoretical results. 展开更多
关键词 CONTROLLABILITY heterogeneous group systems interdependent model sliding-mode control
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New Dimensions for a Challenging Security Environment:Growing Exposure to Critical Space Infrastructure Disruption Risk
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作者 Adrian V.Gheorghe Alexandru Georgescu +2 位作者 Olga Bucovetchi Marilena Lazar Cezar Scarlat 《International Journal of Disaster Risk Science》 SCIE CSCD 2018年第4期555-560,共6页
Space systems have become a key enabler for a wide variety of applications that are vital to the functioning of advanced societies. The trend is one of quantitative and qualitative increase of this dependence, so much... Space systems have become a key enabler for a wide variety of applications that are vital to the functioning of advanced societies. The trend is one of quantitative and qualitative increase of this dependence, so much so that space systems have been described as a new example of critical infrastructure. This article argues that the existence of critical space infrastructures implies the emergence of a new category of disasters related to disruption risks. We inventory those risks and make policy recommendations for what is, ultimately, a resilience governance issue. 展开更多
关键词 Complex systems INFRASTRUCTURE DISRUPTION RESILIENCE GOVERNANCE SPACE INFRASTRUCTURE System interdependencies
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晚期肺癌患者及配偶照顾者恐惧疾病进展与心理困扰的主客体效应分析
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作者 方明艳 谢宗涛 胡雯晴 《护理学杂志》 CSCD 北大核心 2024年第9期21-24,共4页
目的探讨晚期肺癌患者及其配偶照顾者恐惧疾病进展对心理困扰的影响。方法便利选取240对晚期肺癌患者及其配偶照顾者,使用心理困扰量表和恐惧疾病进展简化量表进行调查,建立恐惧疾病进展与双方心理困扰关系的主客体互倚模型。结果晚期... 目的探讨晚期肺癌患者及其配偶照顾者恐惧疾病进展对心理困扰的影响。方法便利选取240对晚期肺癌患者及其配偶照顾者,使用心理困扰量表和恐惧疾病进展简化量表进行调查,建立恐惧疾病进展与双方心理困扰关系的主客体互倚模型。结果晚期肺癌患者及配偶照顾者的心理困扰得分分别为(31.53±6.60)分、(32.37±6.49)分;恐惧疾病进展得分分别为(35.55±8.79)分、(37.26±6.34)分。主客体互倚模型分析表明,患者及配偶的恐惧疾病进展均正向影响自身及对方的心理困扰(均P<0.05),主客体效应显著。结论晚期肺癌患者及配偶照顾者的心理困扰处于中等偏上水平,受到双方恐惧疾病进展的共同影响。应将晚期肺癌患者和配偶照顾者视为一个整体,及时发现和识别他们的疾病进展恐惧水平,以减轻对心理困扰的影响。 展开更多
关键词 晚期肺癌 配偶 照顾者 心理困扰 恐惧疾病进展 主客体互倚模型 家庭系统理论 肿瘤护理
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