The road most travelled : the impact of urban road infrastructure on supply chain network vulnerability

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dc.contributor.author Viljoen, N.M. (Nadia)
dc.contributor.author Joubert, Johannes Willem
dc.date.accessioned 2018-05-24T13:11:56Z
dc.date.issued 2018-03
dc.description.abstract Making a supply chain more resilient and making it more efficient are often diametrically opposed objectives. Managers have to make informed trade-offs when designing their supply chain networks. There are many methods available to quantify and optimise efficiency. Unfortunately the same cannot be said for vulnerability and resilience. We propose a method to quantify the impact that a supply chain’s dependence on the underlying transport infrastructure has on its vulnerability. The dependence relationship is modelled using multilayered complex network theory. We develop two metrics relating to the unique collection of shortest path sets namely redundancy and overlap. To test the relationships between these metrics and supply chain vulnerability we simulate progressive random link disruption of the urban road network and assess the impact this has on Fully Connected, Single Hub and Double Hub network archetypes. The results show that redundancy and overlap of the collection of shortest paths are significantly related to supply chain resilience, however under a purely random disturbance regime they hold no predictive power. This paper builds a foundation for a new field of inquiry into supply chain vulnerability by presenting a flexible mathematical formulation of the multilayered network and defining and testing two novel metrics that could be incorporated into supply chain network design decisions. en_ZA
dc.description.department Industrial and Systems Engineering en_ZA
dc.description.embargo 2019-03-01
dc.description.librarian hj2018 en_ZA
dc.description.sponsorship The National Research Fund of South Africa (grant number 105519). en_ZA
dc.description.uri https://link.springer.com/journal/11067 en_ZA
dc.identifier.citation Viljoen, N. & Joubert, J. The Road most Travelled: The Impact of Urban Road Infrastructure on Supply Chain Network Vulnerability. Networks and Spatial Economics (2018) 18: 85-113. https://doi.org/10.1007/s11067-017-9370-1. en_ZA
dc.identifier.issn 1566-113X (print)
dc.identifier.issn 1572-9427 (online)
dc.identifier.other 10.1007/s11067-017-9370-1
dc.identifier.uri http://hdl.handle.net/2263/65010
dc.language.iso en en_ZA
dc.publisher Springer en_ZA
dc.rights © Springer Science+Business Media, LLC 2017. The original publication is available at :https://link.springer.com/journal/11067. en_ZA
dc.subject Supply chain vulnerability en_ZA
dc.subject Urban road network en_ZA
dc.subject Multilayer complex network en_ZA
dc.subject Shortest paths en_ZA
dc.subject Link betweenness en_ZA
dc.subject Network security en_ZA
dc.subject Transport infrastructure en_ZA
dc.subject Supply chain resiliences en_ZA
dc.subject Supply chain network design en_ZA
dc.subject Mathematical formulation en_ZA
dc.subject Dependence relationships en_ZA
dc.subject Transportation en_ZA
dc.subject Roads and streets en_ZA
dc.subject Redundancy en_ZA
dc.subject Graph theory en_ZA
dc.subject Economic effect en_ZA
dc.subject Social effect en_ZA
dc.subject Complex networks en_ZA
dc.title The road most travelled : the impact of urban road infrastructure on supply chain network vulnerability en_ZA
dc.type Postprint Article en_ZA


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