Impacts of varying network parameters on the vulnerability and resilience of interdependent critical infrastructure systems

IF 2.7 Q2 ENGINEERING, CIVIL

Sustainable and Resilient Infrastructure Pub Date : 2022-09-28 DOI:10.1080/23789689.2022.2126628

Cynthia Lee, I. Tien

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引用次数: 0

Abstract

ABSTRACT Critical infrastructure systems are complex and subjected to evolving risks and hazards, which makes anticipating their behavior difficult. To prioritize among actions that increase system resilience, it is critical to understand their impacts on parameters defining a network and on anticipated network performance. In this paper, the authors investigate the impacts of variations in three parameters on network vulnerability: component vulnerabilities, service interdependency redundancies, and system link configuration. The advances of this work compared to prior studies include: 1) The impacts of parameters varied across a range of values at the component level are evaluated considering component functionality and connectivity; 2) quantitative analyses of component performance as parameters vary are investigated based on system redundancies; and 3) probabilistic system interdependencies are analyzed through a Bayesian network that considers component pathways. Results quantify effects of changes in component vulnerabilities and dependencies and are used to discuss impacts on system resilience.

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不同网络参数对相互依赖的关键基础设施系统脆弱性和弹性的影响

摘要关键基础设施系统是复杂的，容易受到不断变化的风险和危害，这使得预测其行为变得困难。为了在提高系统弹性的行动中确定优先级，了解它们对定义网络的参数和预期网络性能的影响至关重要。在本文中，作者研究了三个参数的变化对网络漏洞的影响：组件漏洞、服务相关性冗余和系统链路配置。与先前的研究相比，这项工作的进展包括：1）考虑到组件的功能性和连接性，评估了组件级别的一系列值中参数变化的影响；2）基于系统冗余度，研究了参数变化时组件性能的定量分析；以及3）通过考虑组件路径的贝叶斯网络来分析概率系统相互依赖性。结果量化了组件漏洞和依赖性变化的影响，并用于讨论对系统弹性的影响。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Sustainable and Resilient Infrastructure ENGINEERING, CIVIL-

CiteScore

7.60

自引率

10.20%

发文量

期刊介绍： Sustainable and Resilient Infrastructure is an interdisciplinary journal that focuses on the sustainable development of resilient communities. Sustainability is defined in relation to the ability of infrastructure to address the needs of the present without sacrificing the ability of future generations to meet their needs. Resilience is considered in relation to both natural hazards (like earthquakes, tsunami, hurricanes, cyclones, tornado, flooding and drought) and anthropogenic hazards (like human errors and malevolent attacks.) Resilience is taken to depend both on the performance of the built and modified natural environment and on the contextual characteristics of social, economic and political institutions. Sustainability and resilience are considered both for physical and non-physical infrastructure.