Two countermeasure strategies to mitigate random disruptions in capacitated systems |
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Authors: | Niyazi O Bakir Alex Savachkin Andrés Uribe-Sanchez |
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Institution: | 1. Department of Industrial Engineering,Bilkent University,Turkey 2. Department of Industrial and Management Systems Engineering,University of South Florida,USA |
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Abstract: | We examine a capacitated system exposed to random stepwise capacity disruptions with exponentially distributed interarrival times and uniformly distributed magnitudes.We explore two countermeasure policies for a risk-neutral decision maker who seeks to maximize the long-run average reward.A one-phase policy considers implementation of countermeasures throughout the entirety of a disruption cycle.The results of this analysis form a basis for a two-phase model which implements countermeasures during only a fraction of a disruption cycle.We present an extensive numerical analysis as well as a sensitivity study on the fluctuations of some system parameter values. |
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Keywords: | Capacity analysis capacitated system lean random disruptions countermeasure policy |
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