Societal Risk and Resilience Analysis: Dynamic Bayesian Network Formulation of a Capability Approach
Publication: ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 5, Issue 1
Abstract
The operation of modern societies relies on the functionality of complex infrastructure such as those for potable water, electric power, and transportation. Difficulty in accessing life-supporting resources due to the loss of the functionality of infrastructure in the aftermath of natural or anthropogenic hazards can result in widespread societal disruptions. To promote societal risk and resilience analysis, this paper makes the following novel contributions: (1) probabilistic models are developed to predict the broad societal impact of disruptive events over time in terms of their impact on the well-being of individuals; (2) a mathematical formulation for societal resilience analysis is developed that integrates the immediate impact on and the recovery of individuals’ well-being; (3) the developed probabilistic models are implemented with Dynamic Bayesian Networks; and (4) a formulation is proposed to evaluate the quantified risks. To estimate the immediate impact on individuals’ well-being and model the subsequent recovery, the information from the recovery modeling of infrastructure and variations in the socioeconomic characteristics were incorporated into a time-dependent reliability analysis. The probabilistic modeling of the immediate impact and recovery of well-being were used to quantify societal resilience. To facilitate the probabilistic modeling, the time-dependent reliability analysis was implemented with a Dynamic Bayesian Network. Finally, the quantified risk and resilience were evaluated to provide insights about the severity levels of disruptive events. The proposed approach is explained, through a real case study, to quantify the cascading impact of infrastructure disruptions.
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Acknowledgments
The research presented herein was supported by the Engineer Research and Development Center—Construction Engineering Research Laboratory (ERDC-CERL) (Award No. W9132T-15-SOI-0003). The views expressed are those of the authors and may not represent the official position of the ERDC-CERL.
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Published In
ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, Part A: Civil Engineering
Volume 5 • Issue 1 • March 2019
Copyright
©2018 American Society of Civil Engineers.
History
Received: Dec 5, 2017
Accepted: Aug 3, 2018
Published online: Nov 13, 2018
Published in print: Mar 1, 2019
Discussion open until: Apr 13, 2019
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