New publication in the International Journal of Infrastructure Preservation and Resilience
Prof. Dr. Bryan T. Adey's Chair of Infrastructure Management is pleased to announce that the article “Prioritizing simulation‑based stress tests to assess the resilience of transport systems: a computation‑free methodology” by Dr. Hossein Nasrazadani - former doctoral candidate at the IM group - has been published in the International Journal of Infrastructure Preservation and Resilience.
In this paper, Hossein Nasrazadani introduces a computation-free method for evaluating and prioritizing simulation-based stress tests for resilience assessment of transport systems. It enables infrastructure managers to efficiently screen and rank stress tests, optimizing the selection process to maximize insights into system resilience while minimizing computational demands.
The methodology uses the results of an initial risk assessment and, through a novel implementation of importance sampling and Bootstrapping resampling, selects subsets of the initial results to mimic specific stress test conditions, estimating their impact on risks. The methodology was validated through application to a Swiss road network facing flooding, demonstrating its practical effectiveness in identifying stress tests with significant potential impact on risks, hence having higher priority for more detailed assessment. In the presented case study, the proposed method enabled instant screening of 80 stress test scenarios, saving approximately 56 weeks of computation.
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