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Vulnerability analysis of complementary transportation systems with applications to railway and airline systems in China

机译：补充运输系统的脆弱性分析及其在中国铁路和航空系统中的应用

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Most of existing studies on vulnerability analysis of multiple infrastructure systems mainly focus on negative effects of interdependencies, which mean that failures in one system can propagate to other systems and aggravate the initial damage. In reality, there also exist positive effects of interdependencies, which are shown in complementary systems and mean that if one system fails another system can provide alternative services to satisfy customers' demands. Different types of transportation systems in a city or country are typical complementary systems. Taking railway and airline systems in China as an example, this paper proposes a network-based approach to model the vulnerability of complementary transportation systems, and based on this model, this paper further introduces a dynamic complementary strength metric, which can help decision makers design or select better complementary topologies from the vulnerability perspective. Also, based on a simple genetic algorithm, this paper analyzes whether critical components for single systems are still important when taking two systems as a whole for analysis. Results show that a protection strategy of hardening a few critical components is also good strategy for the combined system. In addition, the findings and several assumptions are further discussed to close the gap between theory and practice. (C) 2015 Elsevier Ltd. All rights reserved.
机译：现有的有关多个基础结构系统的漏洞分析的大多数研究都集中在相互依存关系的负面影响上，这意味着一个系统中的故障可以传播到其他系统并加剧初始损害。实际上，还存在相互依存的积极影响，这在互补系统中显示，这意味着如果一个系统发生故障，另一个系统可以提供替代服务以满足客户的需求。城市或国家/地区中不同类型的运输系统是典型的补充系统。以中国的铁路和航空系统为例，提出了一种基于网络的互补交通系统脆弱性建模方法，并在此模型的基础上，进一步引入了动态互补强度指标，可以帮助决策者进行设计。或从漏洞角度选择更好的互补拓扑。此外，基于简单的遗传算法，本文分析了将两个系统作为整体进行分析时，单个系统的关键组件是否仍然重要。结果表明，强化一些关键组件的保护策略也是组合系统的良好策略。此外，进一步讨论了发现和一些假设，以缩小理论与实践之间的差距。 （C）2015 Elsevier Ltd.保留所有权利。

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