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Disasters in a Markovian inventory system for perishable items

Published online by Cambridge University Press:  01 July 2016

David Perry*
Affiliation:
University of Haifa
Wolfgang Stadje*
Affiliation:
Universität Osnabrück
*
Postal address: Department of Statistics, University of Haifa, 31905 Haifa, Israel.
∗∗ Postal address: Universität Osnabrück, Fachbereich Mathematik/Informatik, 496069 Osnabrück, Germany. Email address: [email protected]

Abstract

We study a Markovian model for a perishable inventory system with random input and an external source of obsolescence: at Poisson random times the whole current content of the system is spoilt and must be scrapped. The system can be described by its virtual death time process. We derive its stationary distribution in closed form and find an explicit formula for the Laplace transform of the cycle length, defined as the time between two consecutive item arrivals in an empty system. The results are used to compute several cost functionals. We also derive these functionals under the corresponding heavy traffic approximation, which is modeled using a Brownian motion in [0,1] reflected at 0 and 1 and restarted at 1 at the Poisson disaster times.

Type
General Applied Probability
Copyright
Copyright © Applied Probability Trust 2001 

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