A socio-technical systems approach to understanding and enhancing the reliability of interdependent infrastructure systems

2004 ◽  
Vol 2 (1/2) ◽  
pp. 98 ◽  
Author(s):  
Richard Little
Keyword(s):  
Systems Approach ◽  
Infrastructure Systems ◽  
Technical Systems ◽  
Interdependent Infrastructure

scholarly journals Resilience Assessment of Interdependent Infrastructure Systems: A Case Study Based on Different Response Strategies

2019 ◽  
Vol 11 (23) ◽  
pp. 6552 ◽  
Author(s):  
Kong ◽  
Simonovic ◽  
Zhang
Keyword(s):  
Evaluation Method ◽  
Systems Approach ◽  
Numerical Test ◽  
Infrastructure Systems ◽  
Response Strategies ◽  
Infrastructure Network ◽  
Infrastructure System ◽  
Resilient Infrastructure ◽  
Different Response ◽  
Interdependent Infrastructure

Resilient infrastructure systems are essential for continuous and reliable functioning of social and economic systems. Taking advantage of network theory, this paper models street network, water supply network, power grid and information infrastructure network as layers that are integrated into a multilayer network. The infrastructure interdependencies are described using five basic dependence patterns of fundamental network elements. Definitions of dynamic cascading failures and recovery mechanisms of infrastructure systems are also established. The main contribution of the paper is a new infrastructure network resilience measure capable of addressing complex infrastructure system, as well as network component (layer) interdependences. The new measure is based on infrastructure network performance, proactive absorptive capacity and reactive restorative capacity, with three resilience features of network—robustness, resourcefulness, and rapidity. The quantitative resilience measure using dynamic space-time simulation model is illustrated with a multilayer infrastructure network numerical test, including different response strategies to floods of different scale. The results demonstrate that the resilience measure provides an evaluation method of various protection and restoration strategies that will optimize the performance of interdependent infrastructure system. The sector-specific decisions could not always lead to optimal system solutions, and systems approach offers significant benefits for increasing infrastructure system resilience. This study can assist municipal decision makers in (i) better understanding the effects of different response strategies on the resilience of interdependent infrastructure system, and (ii) deciding which strategy should be adopted under different types of disasters.

Infrastructure Decay Modeling With the Input-Output Inoperability Model

2015 ◽  
Vol 1 (1) ◽  
Author(s):  
Vhance V. Valencia ◽  
Alfred E. Thal ◽  
John M. Colombi ◽  
William E. Sitzabee
Keyword(s):  
Asset Management ◽  
Input Output ◽  
Infrastructure Systems ◽  
Cascading Effects ◽  
Multiple Networks ◽  
Infrastructure Network ◽  
Asset Managers ◽  
Infrastructure Interdependency ◽  
Interdependent Infrastructure

Asset management and infrastructure interdependency concepts are found to be useful in the study of infrastructure decay. As such, infrastructure decay is modeled with the input-output inoperability model (IIM), which is a method of analysis that captures cascading effects of a disturbance in interdependent infrastructure systems. This paper presents an extension to the IIM that simplifies the construction of the interdependency matrix central to the model and integrates the use of component decay curves for each component in the system. The revised model results in the ability of infrastructure asset managers to recognize the effect of decay across an entire infrastructure network or multiple networks.

Integrating restoration and scheduling decisions for disrupted interdependent infrastructure systems

2011 ◽  
Vol 203 (1) ◽  
pp. 279-294 ◽  
Author(s):  
Burak Cavdaroglu ◽  
Erik Hammel ◽  
John E. Mitchell ◽  
Thomas C. Sharkey ◽  
William A. Wallace
Keyword(s):  
Infrastructure Systems ◽  
Interdependent Infrastructure
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