วารสารวิชาการเทคโนโลยีอุตสาหกรรม (J. Ind. Tech.) อยู่ในฐานข้อมูล TCI กลุ่ม 2 (2563) มีค่า JIF = 0.094 | The Journal of Industrial Technology (J. Ind. Tech.) is indexed in TCI Tier 2 (2020) with impact factor, JTIF 0.094

An (s,Q) Inventory Control Model with Return Cost and Price Discount
ประเภทบทความ : บทความวิชาการ
หมวดหมู่ : วิศวกรรมอุตสาหการ
The objective of this study is to construct an inventory control model for an inventory system single item single source by considering the (s,Q) inventory policy with returned items and find the optimal point of purchase (s*) and optimal order quantity (Q*) that minimizing the total cost. In case of regular order, the relationship between demand and returned items is considered into two cases which are 1) demand and returned items are independent 2) demand and returned items are dependent. Demand and return items have Poisson distribution. The results of numerical study show that the case of demand and returned items are independent, the optimal order quantity is greater than the case of demand and returned items are dependent. On the other way round, the previous case reveals lower the minimum of total cost than the latter case. Moreover, these two cases have the same optimal point of purchase. In case of adding price discount, the results show that the case of demand and returned items are independent is greater optimal order quantity than the case of regular order, and the minimum of total cost is decreasing. Demand and returned items are dependent, the case of adding price discount is greater total cost than the regular order. Then, optimal order quantity and the minimum of total cost remain the same.
วันที่ลง01/07/2019 186

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