Generic metrics and quantitative approaches for system resilience as a function of time
Generic metrics and quantitative approaches for system resilience as a function of time
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DOI：
10.1016/j.ress.2011.09.002
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发表时间：
2012-03-01
影响因子：
8.1
通讯作者：
Ramirez-Marquez, Jose Emmanuel
中科院分区：
文献类型：
--
作者：
Henry, Devanandham;Ramirez-Marquez, Jose Emmanuel
复原力通常被理解为实体从外部破坏性事件中恢复的能力。在系统领域，复原力概念的正式定义和量化一直难以捉摸。本文提出了量化系统弹性的一般度量和公式。讨论和图形例子表明，定量模型与复原力的基本概念是一致的。基于所提出的方法，可以在系统的背景下将复原力作为一个时间依赖函数来分析。文中描述了网络和系统恢复能力、恢复时间和恢复总代价的度量。文中还描述了分析系统弹性所需的关键参数，如：破坏性事件、组件恢复和整体弹性策略。以路网为例，说明了所提出的恢复力指标的适用性，以及这些分析如何成为制定有效的恢复力设计策略的基础。只要定义了适当的品质因数和必要的系统参数、系统分解和组件参数，所描述的指标就足够通用，可以在各种应用中实施。(C)2011爱思唯尔有限公司。保留所有权利。
Resilience is generally understood as the ability of an entity to recover from an external disruptive event. In the system domain, a formal definition and quantification of the concept of resilience has been elusive. This paper proposes generic metrics and formulae for quantifying system resilience. The discussions and graphical examples illustrate that the quantitative model is aligned with the fundamental concept of resilience. Based on the approach presented it is possible to analyze resilience as a time dependent function in the context of systems. The paper describes the metrics of network and system resilience, time for resilience and total cost of resilience. Also the paper describes the key parameters necessary to analyze system resilience such as the following: disruptive events, component restoration and overall resilience strategy. A road network example is used to demonstrate the applicability of the proposed resilience metrics and how these analyses form the basis for developing effective resilience design strategies. The metrics described are generic enough to be implemented in a variety of applications as long as appropriate figures-of-merit and the necessary system parameters, system decomposition and component parameters are defined. (C) 2011 Elsevier Ltd. All rights reserved.