考慮價格遞減及利潤分享之二階損耗性產品存貨模式

An efficient replenishment policy for a supplier-buyer deteriorating inventory model considering multiple JIT delivery and price decrease

張智清(Chih-Ching Chang)

指導教授 ： 黃惠民 ； 游兆鵬

中原大學/工學院/工業工程研究所/碩士(2008年)

https://doi.org/10.6840/cycu200800489

摘要

在市場激烈競爭的環境中，顧客購買能力下降，許多企業削價競銷，導致可獲取利潤越來越低，在這樣微利的時代中，許多企業紛紛提出製商整合的策略以降低成本、創造更高利潤，只因漸漸體認到，以往只考慮單方面立場的最佳化，並未考慮到供應鏈中其他成員間交互影響，其準確性與現實中差距甚遠，唯有將所有成員共同立場為考量，尋求聯合整體最佳化才是長遠之計。另一方面，許多電子產品擁有損耗性、生命週期較短的特性，企業必須思考何時該開發新產品以持續創造利潤。基於上述理由，本研究首先探討一個零售商在訂購批量上擁有主導優勢，而損耗率為一固定且已知常數在需求率與價格呈現反向變動關係且價格隨時間遞減之二階存貨模式，以最大化供應商平均總利潤為目標，求出最佳生產週期；接著把較不符合現實狀況的損耗率改為一服從韋伯分配的變動損耗；最後再加入利潤分享機制，以數學理論推導模式並且藉助數學軟體以及程式語言的輔助，利用動態的求解方法，並配合數值範例與說明，再來透過敏感度分析的結果，了解各參數對最佳解的敏銳性。

關鍵字

韋伯分配 ； 損耗性 ； 存貨 ； 製商整合

並列摘要

In this competitive market and poor economic environment, many businesses seek to mark down prices. In this micro-profit market, businesses use strategic integration to reduce cost. On the other hand, electronic product tends to deteriorate and has short product lifecycle. Enterprise must develop new products that are profitable. This study drives a two echelon inventory model where retailer is the leader. The rate of deterioration is assumed constant and demand increases with price decrease. We then consider a varying rate of deterioration using Weibull distribution and apply profit-sharing policy. The objective of the study is to maximize total supplier’s profit. A computer dynamic search algorithm is developed to obtain the optimal lifecycle time. Numerical examples are given to validate the analysis of the models.

並列關鍵字

Weibull-distribution ； Deterioration ； Inventory ； Collaboration

參考文獻

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