The effects of inflation and time-value of money on an economic order quantity model with a random product life cycle

Abstract For several decades, the Economic Order Quantity (EOQ) model and its variations have received much attention from researchers. Recently, there has been an investigation into an EOQ model incorporating a random product life cycle and the concept of time-value of money. This paper extends the previous research in several areas. First, we investigate the impact of inflation on the choice of replenishment quantities. Second, the unit cost, which has been inadvertently omitted in the previous research, is included in the objective function to properly model the problem. Third, we consider the normal distribution as a product life cycle in addition to the exponential distribution. Fourth, we develop a simulation model which can be used for any probability distribution.

[1]  Kun-Jen Chung,et al.  A NOTE ON THE OPTIMAL CYCLE LENGTH WITH A RANDOM PLANNING HORIZON , 1995 .

[2]  Chandan Gurnani,et al.  Economic analysis of inventory systems , 1983 .

[3]  George C. Philippatos,et al.  Evaluating Investment in Inventory Policy: A Net Present Value Framework , 1986 .

[4]  R. Trippi,et al.  A PRESENT VALUE FORMULATION OF THE CLASSICAL EOQ PROBLEM , 1974 .

[5]  Kee H. Chung,et al.  ECONOMIC ANALYSIS OF INVENTORY SYSTEMS: A REJOINDER , 1989 .

[6]  A. Goswami,et al.  An EOQ Model for Deteriorating Items with Linear Time-dependent Demand Rate and Shortages under Inflation and Time Discounting , 1995 .

[7]  T.C.E. Cheng,et al.  An Economic Order Quantity Model with Demand-Dependent Unit Production Cost and Imperfect Production Processes , 1991 .

[8]  Ford W. Harris,et al.  How Many Parts to Make at Once , 1990, Oper. Res..

[9]  I. Moon,et al.  AN ECONOMIC ORDER QUANTITY MODEL WITH A RANDOM PLANNING HORIZON , 1993 .

[10]  Edward A. Silver,et al.  Modelling in Support of Continuous Improvements Towards Achieving World Class Operations , 1993 .

[11]  Young K. Son,et al.  The effect of discounting on inventory lot sizing models , 1989 .

[12]  Mohamed Ben-Daya,et al.  Optimal time varying lot-sizing models under inflationary conditions , 1996 .

[13]  Chandan Gurnani.  Economic analysis of inventory systems: a reply , 1985 .

[14]  J M Masters.  A Note on the Effect of Sudden Obsolescence on the Optimal Lot Size , 1991 .

[15]  Ruud H. Teunter,et al.  Effects of discounting and demand rate variability on the EOQ , 1998 .

[16]  Kee H. Chung.  Inventory Control and Trade Credit Revisited , 1989 .

[17]  John J. Rousseau,et al.  EOQ under Date-terms Supplier Credit , 1989 .