A Study on the Dynamic Lot Size Model for Deteriorating Items

진부화(陳腐化) 제품(製品)에 대한 동적(動的)롯트 결정(決定) 모형(模型)에 관한 연구(硏究)

A dynamic lot size model is developed for the deteriorating items. The amount of deterioration during a period is assumed to be proportional to the inventory at the end of the period. It is further assumed that deterioration rates can differ among periods. This new model is shown to be equivalent to the general one by simple transformation of some variables. A numerical example is given to illustrate the derived results.