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Robustness of Cyber-Physical Supply Networks in Cascading Failures

A cyber-physical supply network is composed of an undirected cyber supply network and a directed physical supply network. Such interdependence among firms increases efficiency but creates more vulnerabilities. The adverse effects of any failure can be amplified and propagated throughout the network....

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Detalles Bibliográficos
Autores principales: Mu, Dong, Yue, Xiongping, Ren, Huanyu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8235700/
https://www.ncbi.nlm.nih.gov/pubmed/34207235
http://dx.doi.org/10.3390/e23060769
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author Mu, Dong
Yue, Xiongping
Ren, Huanyu
author_facet Mu, Dong
Yue, Xiongping
Ren, Huanyu
author_sort Mu, Dong
collection PubMed
description A cyber-physical supply network is composed of an undirected cyber supply network and a directed physical supply network. Such interdependence among firms increases efficiency but creates more vulnerabilities. The adverse effects of any failure can be amplified and propagated throughout the network. This paper aimed at investigating the robustness of the cyber-physical supply network against cascading failures. Considering that the cascading failure is triggered by overloading in the cyber supply network and is provoked by underload in the physical supply network, a realistic cascading model for cyber-physical supply networks is proposed. We conducted a numerical simulation under cyber node and physical node failure with varying parameters. The simulation results demonstrated that there are critical thresholds for both firm’s capacities, which can determine whether capacity expansion is helpful; there is also a cascade window for network load distribution, which can determine the cascading failures occurrence and scale. Our work may be beneficial for developing cascade control and defense strategies in cyber-physical supply networks.
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spelling pubmed-82357002021-06-27 Robustness of Cyber-Physical Supply Networks in Cascading Failures Mu, Dong Yue, Xiongping Ren, Huanyu Entropy (Basel) Article A cyber-physical supply network is composed of an undirected cyber supply network and a directed physical supply network. Such interdependence among firms increases efficiency but creates more vulnerabilities. The adverse effects of any failure can be amplified and propagated throughout the network. This paper aimed at investigating the robustness of the cyber-physical supply network against cascading failures. Considering that the cascading failure is triggered by overloading in the cyber supply network and is provoked by underload in the physical supply network, a realistic cascading model for cyber-physical supply networks is proposed. We conducted a numerical simulation under cyber node and physical node failure with varying parameters. The simulation results demonstrated that there are critical thresholds for both firm’s capacities, which can determine whether capacity expansion is helpful; there is also a cascade window for network load distribution, which can determine the cascading failures occurrence and scale. Our work may be beneficial for developing cascade control and defense strategies in cyber-physical supply networks. MDPI 2021-06-18 /pmc/articles/PMC8235700/ /pubmed/34207235 http://dx.doi.org/10.3390/e23060769 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Mu, Dong
Yue, Xiongping
Ren, Huanyu
Robustness of Cyber-Physical Supply Networks in Cascading Failures
title Robustness of Cyber-Physical Supply Networks in Cascading Failures
title_full Robustness of Cyber-Physical Supply Networks in Cascading Failures
title_fullStr Robustness of Cyber-Physical Supply Networks in Cascading Failures
title_full_unstemmed Robustness of Cyber-Physical Supply Networks in Cascading Failures
title_short Robustness of Cyber-Physical Supply Networks in Cascading Failures
title_sort robustness of cyber-physical supply networks in cascading failures
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8235700/
https://www.ncbi.nlm.nih.gov/pubmed/34207235
http://dx.doi.org/10.3390/e23060769
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