臺灣博碩士論文加值系統

在本研究中提出退化性商品在產品剩餘到期日及價格因素影響需求率，並考慮以產品到期日為固定週期下的最佳存貨策略。退化性商品在生活中隨處可見，而退化性商品需在到期日結束前使用掉，否則會造成商品本身失去使用價值，造成企業承擔額外的成本，而隨著產品剩餘壽命的減少，消費者對於產品的需求度也會隨之減少，因此我們針對這種情況，建立第一種存貨模型，也就是當產品在消費者已知的產品到期日的期限內，考慮時間的推移，各時點的需求率會逐漸減少，以此特性先建立需求率模型。另外，消費者在選購商品時，價格往往是主要選購因素，當價格有變動，消費者對於該產品購買慾望也會有所改變；在第一種存貨需求率函數模型之中，加入考慮價格變動的影響，此情形下我們建立第二種存貨模型，也就是需求同時受到價格考量及產品剩餘壽命的影響，而在這兩種模型研究中，當存貨提早消耗完就會有缺貨的發生。我們根據這兩種需求率模型找出該存貨模型的最佳消耗時間、最佳訂購量、每單位時間最高利潤及最佳定價，並討論各種參數變動下，最佳解的改變情況。

This study provides us an optimal policy for a deterioration item under the expiration date as the fixed cycle time and the demand function sensitive to the price and time. The deterioration items can be found everywhere in our life and they should be used before the expiration date, otherwise, they will create an additional cost to the enterprise.
The customer’s demand will be decreasing when the products approach to their expiration date, therefore, our first model (model I) will be based on the time-dependent demand function and the expiration date as the ordering time.
In addition, the price is another factor to effect the customer’s demand. Usually, people will tend to purchase the same quality products with the lower price, thus our second model (model II) is to consider the same situations as model I but the demand function is effected by the price and time
Besides above, the shortage problem is also considered in both models. In our study, we will provide the optimal solutions for those two models such as the optimal quantity, the optimal price, the optimal profit per unit time and some other sensitive analyses.

目錄
摘要 I
ABSTRACT II
致謝 III
目錄 IV
圖目錄 VI
表目錄 VII
第一章 緒論 1
1.1 研究背景與動機 1
1.2 研究目的 2
1.3 研究範圍與限制條件 2
1.4 研究方法與步驟 3
第二章 文獻探討 4
2.1 傳統存貨模型 4
2.2 定價策略下存貨模型 4
2.3 考慮時間需求變化下存貨模型 5
2.4 考慮價格與時間變化下存貨模型 5
第三章 模型建立 7
3.1 基本假設與符號定義 7
3.1.1 基本假設 7
3.1.2 符號定義 7
3.2 Model 1 8
3.2.1 模式推導 8
3.2.2 最佳定購策略 11
3.2.3 最佳解之演算法 13
3.3 Model 2 14
3.3.1 模式推導 14
3.3.2 最佳定購策略 15
第四章 數值分析 20
4.1 數值範例 20
4.1.1 Model 1 20
4.1.2 Model 2 21
4.2 數值分析 22
4.2.1 Model 1 22
4.2.2 Model 2 26
第五章 結論及未來研究建議與方向 31
5.1 結論 31
5.2 未來研究建議與方向 31
參考文獻 32

參考文獻

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