Journal of the Korean Operations Research and Management Science Society (한국경영과학회지)

The Korean Operations Research and Management Science Society (한국경영과학회)
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Joint Replenishment Problem for Single Buyer and Single Supplier System Having the Stochastic Demands

확률적 수요를 갖는 단일구매자와 단일공급자 시스템의 다품목 통합발주문제

  • 정원찬 (한양대학교 산업경영공학과) ;
  • 김종수 (한양대학교 산업경영공학과)
  • Received : 2011.01.03
  • Accepted : 2011.07.25
  • Published : 2011.09.30
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Abstract

In this paper, we analyze a logistic system involving a supplier who produces and delivers multiple types of items and a buyer who receives and sells the products to end customers. The buyer controls the inventory level by replenishing each product item up to a given order-up-to-level to cope with stochastic demand of end customers. In response to the buyer's order, the supplier produces or outsources the ordered item and delivers them at the start of each period. For the system described above, a mathematical model for a single type of item was developed from the buyer's perspective. Based on the model, an efficient method to find the cycle length and safety factor which correspond to a local minimum solution is proposed. This single product model was extended to cover a multiple item situation. From the model, algorithms to decide the base cycle length and order interval of each item were proposed. The results of the computational experiment show that the algorithms were able to determine the global optimum solution for all tested cases within a reasonable amount of time.

Keywords

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