A note on the convexity of service-level measures of the (r, q) system

• 成果类型: Article
• 署名作者: Zhang, HT
• 署名单位: Hong Kong University of Science & Technology
• 刊物名称: MANAGEMENT SCIENCE
• ISSN/ISSBN: 0025-1909
• DOI: 10.1287/mnsc.44.3.431
• 发表日期: 1998
• 页码: 431-432
• 关键词: convexity; convex; inventory; backorders; Stockouts

摘要

This note gives a simple proof that in a (r, q) system the average outstanding backorders and the average stockouts per unit time are jointly convex in the two control variables q and r.