整合性二階再利用產品多批量運送存貨模式

Integrated two-echelon multiple lot-size deliveries inventory model of reusable product

吳德欽(Te-Chin Wu)

指導教授 ： 黃惠民

中原大學/工學院/工業工程研究所/碩士(2004年)

https://doi.org/10.6840/cycu200400264

摘要

在現今競爭激烈的市場環境中，為了提升競爭能力，企業爭相尋求降低成本方法。此外近年來隨著環保意識的抬頭，環境成本佔企業總成本的比重日益增加。因此對企業而言，如何利用資源回收再利用來降低其相關物料成本，是企業提高競爭力之重點。

本研究以可回收再利用物品為研究對象，考慮單一產品與單一週期，分別考量在多次訂購下的不良品可回收單階層存貨模式與單次訂購多批量運送下二階層存貨模式情況作深入性的分析探討。本研究建立數學模式，以程式語言與數學軟體搜尋出在總成本最小化的最佳解，並透過數值範例與敏感度分析來瞭解影響系統之關鍵參數。

本研究結果發現當不良品可回收架構的存貨模式，需求率與單位變動檢驗成本為影響期望總成本的關鍵因素。另外在多批量運送架構的二階層存貨模式，發現若是以以策略性整合供應商與零售商雙方可以降低雙方聯合總成本。若以單方各自立場考量，其成本並非為整體之最佳化。唯有以共同雙方的立場為考量，聯合總成本才會是整體之最佳化，因此可以得知若採用雙方的共同立場，可以得到較佳的經濟利益。

關鍵字

二階存貨 ； 不良品 ； 多批量運送 ； 存貨 ； 可再利用物品

並列摘要

In a competitive market environment, effective cost reduction is the best way to increase competitiveness. In the recent years, as the environmental protection cost has risen, the reduction in environmental cost in enterprise is becoming more and more important. One of the ways to save material cost and protect environment is to reuse resources.

This study is to analyze the inventory model of reusable items with recycling defective items and integrated two-echelon multiple lot-size deliveries. A mathematical model and a program are developed to derive the optimal solution with minimal total cost. Numerical examples and sensitivity analysis are carried out to analyze the influence of the inventory system key parameters.

The result of this study shows that the demand rate and inspection cost are the influence of expectation total cost key factors for the first inventory model. In the second inventory model, the integration of companies especially in term of developing strategies is vital to reduce the overall cost of the enterprise. This is because decision made independently by one player with not result in global optimum. Global optimality will only be realized if the perspectives of all players are considered.

並列關鍵字

imperfect quality ； two-stage inventory ； reusable product ； inventory ； multiple lot-size deliveries

參考文獻

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