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Mark Andrew Ehlen

Researcher at Sandia National Laboratories

Publications -  43
Citations -  1441

Mark Andrew Ehlen is an academic researcher from Sandia National Laboratories. The author has contributed to research in topics: Economic impact analysis & Supply chain. The author has an hindex of 16, co-authored 43 publications receiving 1270 citations. Previous affiliations of Mark Andrew Ehlen include National Institute of Standards and Technology.

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Journal ArticleDOI

A resilience assessment framework for infrastructure and economic systems: Quantitative and qualitative resilience analysis of petrochemical supply chains to a hurricane

TL;DR: In this paper, the authors developed a comprehensive resilience assessment framework for evaluating the resilience of infrastructure and economic systems and demonstrated the utility of the assessment framework through application to two hypothetical scenarios involving the disruption of a petrochemical supply chain by hurricanes.
Book ChapterDOI

A Framework for Assessing the Resilience of Infrastructure and Economic Systems

TL;DR: In this paper, the authors propose a general framework for assessing the resilience of infrastructure and economic systems, which consists of three primary components: (1) a definition of resilience that is specific to infrastructure systems; (2) a quantitative model for measuring resilience of systems to disruptive events through the evaluation of both impacts to system performance and the cost of recovery; and (3) a qualitative method for assessing system properties that inherently determine system resilience.
Journal ArticleDOI

Mitigating disruptions in a multi-echelon supply chain using adaptive ordering

TL;DR: In this article, the authors investigate adjustments in order activity across four echelons including assembly to help respond and recover from a disruption, and find benefits in the dynamic policies from incorporating a metaheuristic parameter search over multiple levels.

Mitigating Disruptions in a Multi-echelon Supply Chain using Adaptive Ordering

TL;DR: In this article, the authors investigate adjustments in order activity across four echelons including assembly simulation experiments, and find that the impact of a disruption depends on its location, with costlier and longer lasting impacts occurring from disruptions at echeons close to ultimate consumption.
Journal ArticleDOI

Life-cycle costs of fiber-reinforced-polymer bridge decks

TL;DR: In this paper, the authors examined the life-cycle cost-effectiveness of three fiber reinforced polymer (FRP) bridge decks, using a life cycle cost method specifically tailored for comparing new materials with conventional ones.