Near myopic heuristics for the fixed-life perishability problem
Management Science
A perishable inventory system with modified (S — 1, S) policy and arbitrary processing times
Computers and Operations Research
(S, S) Continuous Review Models for Products with Fixed Lifetimes
Operations Research
Pricing and the News Vendor Problem: a Review with Extensions
Operations Research
Analysis of a Sampling Control Scheme for a Perishable Inventory System
Operations Research
ACTUARIAL VALUATION OF PERISHABLE INVENTORY SYSTEMS
Probability in the Engineering and Informational Sciences
Inventory systems for goods with censored random lifetimes
Operations Research Letters
Duality of dams via mountain processes
Operations Research Letters
A decision support system for patient scheduling in travel vaccine administration
Decision Support Systems
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We consider control policies for perishable inventory systems with random input whose purpose is to mitigate the effects of unavailability. In the basic uncontrolled system, the arrival times of the items to be stored and the ones of the demands for those items form independent Poisson processes. The shelf lifetime of every item is finite and deterministic. Every demand is for a single item and is satisfied by the oldest item on the shelf, if available. The first controlled model excludes the possibility of unsatisfied demands by introducing a second source of fresh items that is completely reliable and delivers without delay whenever the system becomes empty. In the second model, there is no additional ordering option by outsourcing. However, to avoid the most adverse effects of unavailability, the demands are classified into different categories of urgency. An incoming demand is satisfied or not according to its category and the current state of the system. For both models, we determine the steady-state distribution of the virtual outdating process, which is then used to derive the relevant cost functionals: the steady-state distribution and expected value of the number of items in the system, the rate of outdatings, as well as, for model 1, the rate of special orders from the external source and, for model 2, the rate of unsatisfied demands.