標題: Multiple lot-sizing decisions with an interrupted geometric yield and variable production time
作者: Hsu, Hsi-Mei
Su, Tai-Sheng
Wu, Muh-Cherng
Huang, Liang-Chuan
工業工程與管理學系
Department of Industrial Engineering and Management
關鍵字: Lot-sizing;Interrupted geometric distribution;Dynamic programming;Production lead-time;Production/inventory system
公開日期: 1-Oct-2009
摘要: This study examines a multiple lot-sizing problem for a single-stage production system with an interrupted geometric distribution, which is distinguished in involving variable production lead-time. In a finite number of setups, this study determined the optimal lot-size for each period that minimizes total expected cost. The following cost items are considered in optimum lot-sizing decisions: setup cost, variable production cost, inventory holding cost, and shortage cost. A dynamic programming model is formulated in which the duration between current time and due date is a stage variable, and remaining demand and work-in-process status are state variables. This study then presents an algorithm for solving the dynamic programming problem. Additionally, this study examines how total expected costs of optimal lot-sizing decisions vary when parameters are changed. Numerical results show that the optimum lot-size as a function of demand is not always monotonic. (C) 2009 Elsevier Ltd. All rights reserved.
URI: http://dx.doi.org/10.1016/j.cie.2009.01.014
http://hdl.handle.net/11536/6633
ISSN: 0360-8352
DOI: 10.1016/j.cie.2009.01.014
期刊: COMPUTERS & INDUSTRIAL ENGINEERING
Volume: 57
Issue: 3
起始頁: 699
結束頁: 706
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