On a queueing-inventory with reservation, cancellation, common life time and retrial

A. Krishnamoorthy (), Dhanya Shajin () and B. Lakshmy ()
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A. Krishnamoorthy: Cochin University of Science and Technology
Dhanya Shajin: Cochin University of Science and Technology
B. Lakshmy: Cochin University of Science and Technology

Annals of Operations Research, 2016, vol. 247, issue 1, No 15, 365-389

Abstract: Abstract In this paper we model a queueing-inventory system that has applications in railway and airline reservation systems. Maximum items in the inventory is $$S$$ S which have a random common life time; this includes those that are sold in particular cycle. A customer, on arrival to an idle server with at least one item in inventory, is immediately taken for service; or else he joins the buffer of maximum size $$S$$ S depending on number of items in the inventory (the buffer capacity varies and is, at any time, equal to the number of items in the inventory). The arrival of customers constitutes a Poisson process, demanding exactly one item each from the inventory. If there is no item in the inventory, the arriving customer first queue up in a finite waiting space of capacity $$K$$ K . When it overflows an arrival goes to an orbit of infinite capacity with probability $$p$$ p or is lost forever with probability $$1-p$$ 1 - p . From the orbit he retries for service according to an exponentially distributed inter-occurrence time. The service time follows an exponential distribution. Cancellation of sold items before its expiry is permitted. Inventory gets added through cancellation of purchased items, until the expiry time. Cancellation time is assumed to be negligible. We analyze this system. Several performance characteristics are computed; expected sojourn time of the system in a cycle with “no inventory” and also “maximum inventory” are computed. Some illustrative numerical examples are presented. An optimization problem is numerically analyzed.

Keywords: Reservation; Cancellation; Common life time; Queueing-inventory system; Retrial queue (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (5)

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DOI: 10.1007/s10479-015-1849-x

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