Optimizing Trade-off Policy Determination for Supply-Chain Production Inventory Model with JIT Delivery and Imperfect Item

供應鏈製造存貨模式考慮即時運送與瑕疵產品之權衡性補貨策略

鍾峻任(Chun-Jen Chung) ； 黃惠民(Hui-Ming Wee) ； 黃明弘(Ming-Hon Hwang) ； 沈育樹(Yu-Su Shum)

《致遠資管學刊》 2卷1期 (2008/07) Pp. 37-56

https://doi.org/10.6598/IMD.2008.2(1).3

摘要

由於競爭壓力、嚴格的產品品質以及更快的需求回應短導致產品生命週期的縮短，而且供應鏈中夥伴間的合作受到學術界與實務界更多的注意。更甚者，供應鏈中子系統的不確定性會影響生產與存貨策略。由於供應者與買方策略與作業之間的合作可以獲得經濟效益，因此緊密合作的議題包含於本篇研究的探討。本研究發展一個即時(JIT)運送策略，其中考慮了生產特性中的單一設置、多批運送與瑕疵產品議題。在研究中更考慮了即時(JIT)運送策略的經濟效益以及相關的品質成本尤其是預防成本，由模式的建立推導出權衡性(trade-off)供應鏈補貨策略決策。在其中，我們修正第一生產批量與需求間的關係，並且使用時間加權式存貨(Time-Weighted Inventory)觀念推得最佳的運送策略以及製造系統的最佳生產批量。本研究提供例子案例說明模式應用，從計算結果與敏感度分析得知，供應商的持有成本、單位運輸變動成本以及實施即時運送的利益與節省是重要的管理要素。

關鍵字

整合性製造與存貨 ； 非一致性產品 ； 供應鏈管理 ； 預防成本 ； 即時運送策略

並列摘要

Due to increasing competitive pressure, more rigorous quality and quicker response requirements result in request of shortened-life-cycle product and more academic and practical attentions have been paid to the collaboration between members of a supply chain. Because the cooperation between the supplier and the buyer is economically beneficial to both partners, close integration issue is incorporated. Moreover, uncertainties of supply chain subsystem influence the production and inventory strategies. One source of uncertainties is output of nonconforming items. This study develops a JIT delivery strategy considering single setup, multiple deliveries and imperfect item. The proposed model considers the saving of implementing JIT delivery and the quality cost especially preventive cost, and derives the optimal trade-off determination on JIT delivery policy for buyer-supplier chain. The buyer-supplier production-inventory model takes more rigorous scrutiny for first production batch, and derives the optimal number of deliveries and the production lot size using time-weighted-inventory (TWI) concept. A numerical case example is presented to illustrate the proposed model. The case example results and analysis demonstrate that the supplier's holding cost, variable transportation cost and the cost saving from implementing JIT delivery are significant decision factors.

並列關鍵字

Integrated production inventory model ； Nonconforming item ； Supply chain management ； Preventive cost ； JIT delivery policy