Hazard tolerance of spatially distributed complex networks

https://doi.org/10.1016/j.ress.2016.08.010Get rights and content
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Highlights

  • We develop a method for quantifying the reliability of real-world systems.

  • We assess the spatial resilience of synthetic spatially distributed networks.

  • We form algorithms to generate spatial scale-free and exponential networks.

  • We show how these “synthetic” networks are proxies for real world systems.

  • Conclude that many real world systems are vulnerable to spatially coherent hazard.

Abstract

In this paper, we present a new methodology for quantifying the reliability of complex systems, using techniques from network graph theory. In recent years, network theory has been applied to many areas of research and has allowed us to gain insight into the behaviour of real systems that would otherwise be difficult or impossible to analyse, for example increasingly complex infrastructure systems. Although this work has made great advances in understanding complex systems, the vast majority of these studies only consider a systems topological reliability and largely ignore their spatial component. It has been shown that the omission of this spatial component can have potentially devastating consequences. In this paper, we propose a number of algorithms for generating a range of synthetic spatial networks with different topological and spatial characteristics and identify real-world networks that share the same characteristics. We assess the influence of nodal location and the spatial distribution of highly connected nodes on hazard tolerance by comparing our generic networks to benchmark networks. We discuss the relevance of these findings for real world networks and show that the combination of topological and spatial configurations renders many real world networks vulnerable to certain spatial hazards.

Keywords

Network theory
Spatial networks
Resilience
Reliability
Infrastructure systems
Spatial hazard

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