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신성환,Shinn, Seong-Whan 국제문화기술진흥원 2022 The Journal of the Convergence on Culture Technolo Vol.8 No.6
This paper analyzes the problem of the economic order quantity (lot size) of a retailer in a two-stage supply chain consisting of a supplier, a retailer(distributor), and a customer. In this two-stage supply chain, the supplier permits the retailer to defer payment for a certain fixed period of time for the purchase cost to be paid by the retailer as a price differentiation strategy with his competitor. In addition, in the case of customer goods such as food and grain, it is common to see that end-customer demand is generally depend on the level of inventory displayed by the retailer. From this perspective, this paper analyzes the inventory problem of retailers under the assumption that the supplier may allow a certain period to suspend payments for the purchase of goods and the end customer demand is a function of the retailer's inventory level increasing with size. In this regard, we need to analyze how much the length of the grace period for product purchase costs affect the retailer's lot-sizing policy. Therefore, we formulate the retailer's annual net profit and analyze the effect of the length of credit period on the retailer's inventory policy numerically.
김재균,신성환 울산대학교 1991 공학연구논문집 Vol.22 No.2
본 논문은 구입량에 따라 구매 가격과 운송비용이 각각 할인되는 상황하에서 주문 정책을 수립할 때 총비용을 최소화시키는 적절한 주문량을 결정하는데 그 목적이 있다. 본 고에서는 구매 단가의 경우에는 단계할인이 적용되고 운송비용의 경우에는 운송단위별로 할인이 이루어지는 경우에 대한 모델이 제시되었으며 이와같은 할인 계획하에서 최적 주문량을 결정할 수 있는 절차가 제시되었다. This paper deals with an EOQ model in which both the unit purchasing price and the freight cost depend on the quantity of the lot size. The model adopts incremental quantity discounts for the price and a general form of discounts for the freight cost. Investigation of the properties of an optimal solution allows us to develop an algorithm whose validity is illustrated through an example problem.