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題 名 | 及時化供應鏈整合批量與運送方法模式之研究=A Study of Integrated Lot-size and Shipment-mode Models for Jit Supply Chains |
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作 者 | 黃浩良; 陳新民; 羅乾鐘; | 書刊名 | 商管科技季刊 |
卷 期 | 6:3 民94.09 |
頁 次 | 頁443-465 |
分類號 | 494.542 |
關鍵詞 | 供應鏈; JIT採購; JIT生產; 直接運送; 聯合運送; 整合批量模式; Supply chain; JIT purchasing; JIT manufacturing; Direct shipment; Joint shipment; Buyer-vendor coordination model; |
語 文 | 中文(Chinese) |
中文摘要 | 本文提出兩種買賣方合作模式用來協助及時化(Just-in-time;JIT)供應鏈管理者規劃最佳整合批量與運送方法決策。本研究考慮供應鍾單一製造商(賣方)採用JIT系統生產多項物品供應多家實施JIT 採購的採購商(買方),為了達成同步化物流體系,買賣雙方必須訂定最佳的生產、採購與運送批量排程決策,使得賣方生產計畫以及買方採購與運送計畫在時間上緊密配合。本研究考慮不同運費結構與運送政策,分別建立「直接運送」與「聯合運送」模式,並以成本下限函數搜尋法求解模式。比較兩種運送模式而發現:聯合運送雖可降低買方運送成本,卻導致買賣雙方儲存成本增加。反之,直接運送可降低買賣方的儲存成本,但產生較高的運送成本。為達成整體物流成本最小化,供應鏈管理者須依據實際買賣方成本與運費折扣結構,評估儲存成本與運送成本的抵換效應,決定出最佳批量與運送方法決策。 |
英文摘要 | This paper presents two buyer-vendor coordinated models used to determine the optimal integrated lot-size and shipment-mode decisions in just-in-time (JIT) supply chains. In these two models, a single vendor with JIT manufacturing provides multiple items for several buyers who replenish inventory with JIT purchasing. To synchronize material flows in the two-echelon JIT supply chain, the lot-size and scheduling decisions that integrate production, purchasing, and delivery activities should be made through buyer-vendor collaboration. Considering the freight discount scheme and two widely used shipment policies, we formulate the direct shipment (DS) model and the joint shipment (JS) model. Then, effective searching algorithms based on the lower bound of the objective cost function are derived to solve each model. A comparison analysis between these two models indicated that the JS policy significantly reduces the delivery cost of the buyers but increases the holding cost of the vendor and the buyers due to freight consolidation. By contrast, the DS policy can decrease the buyers' holding cost while resulting in the high delivery cost. Therefore, the supply chain managers should deliberatively evaluate the trade-off effect between the holding cost and the delivery cost, which are heavily dependent on the practical freight discount scheme, so as to obtain the advantageous lot-size and shipment-mode decisions with the minimum total cost in the JIT supply chain. |
本系統中英文摘要資訊取自各篇刊載內容。