研究生: |
黃建程 Huang, Chien-Cheng |
---|---|
論文名稱: |
兩階層配銷系統(R,S)存貨政策--倉儲中心與零售點具相異盤存週期之模式發展 |
指導教授: |
李賢得
Lee, Shine-Der |
學位類別: |
碩士 Master |
系所名稱: |
管理學院 - 工業管理科學系 Department of Industrial Management Science |
論文出版年: | 2002 |
畢業學年度: | 90 |
語文別: | 中文 |
論文頁數: | 72 |
中文關鍵詞: | 多階層配銷系統 、(R, S)存貨系統 、銷售損失 |
相關次數: | 點閱:76 下載:1 |
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摘要
本研究主要針對顧客需求為隨機型態下,兩階層配銷系統的最佳存貨政策進行模式發展。研究中所指的兩階層配銷系統包含第一階層的倉儲中心以及下游第二階層的數個零售點,倉儲中心和零售點皆採用定期盤存暨最高存貨水準 (R,S) 系統,但上下兩階層的盤存週期並不相同且下游零售點的盤存週期為研究中的決策變數。在缺貨型態方面,則配合物流或配銷系統的實際作業,考慮零售點所面對的缺貨型態為銷售損失型。
本研究依據隨機理論,首先解析上下兩階層存貨變化的互動關係,再建構單位時間系統運作的成本表示式,此成本表示式包含了零售點向倉儲中心訂貨的訂購成本,倉儲中心和零售點的存貨持有成本,以及零售點缺貨時的銷售損失成本。研究的目的是希望能夠以最小化單位時間系統營運成本為目標函數,求得系統存貨政策的最佳決策變數,此決策變數包括了倉儲中心的最高存貨水準,各個零售點的盤存週期以及其最高存貨水準。
本論文以近似分配推導出系統內部複雜之成本表示式,且根據所推導出的成本表示式討論其函數特性並發展演算法,以求得存貨政策的最佳參數,並佐以演算實驗來驗證模式表現的良窳,由演算結果發現,此模式可表現此類物流系統實際運作之情形及合理近似其複雜之總成本表示式,且研究中之模式比起倉儲中心與零售點採用相同盤存週期的模式,在期望系統運作成本的降低上有明顯的幫助,並且在參數分析中發現零售點單位時間商品需求速率對上下兩階層之最高存貨水準皆有顯著的影響。
關鍵字:多階層配銷系統,(R,S)存貨系統,銷售損失。
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