Perishable inventory systems with variable input and demand rates

Steven Nahmias, David Perry, Wolfgang Stadje

Research output: Contribution to journalArticlepeer-review


We consider a certain class of perishable inventory systems with items and demands arriving at random times. 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. Generalizing previous work, we assume that the input and/or the demand rate depend on the current value of the basic virtual outdating process (VOT). For different models of this kind we derive the steady-state distribution of the VOT and of the number of items on the shelf.

Original languageEnglish
Pages (from-to)155-162
Number of pages8
JournalMathematical Methods of Operations Research
Issue number1
StatePublished - Sep 2004


  • Inventory
  • Perishable
  • State-dependent rates
  • Steady-state distribution
  • Virtual outdating process

ASJC Scopus subject areas

  • Software
  • Mathematics (all)
  • Management Science and Operations Research


Dive into the research topics of 'Perishable inventory systems with variable input and demand rates'. Together they form a unique fingerprint.

Cite this