Optimal scheduling of purchasing orders for large projects

Boaz Ronen*, Dan Trietsch

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

4 Scopus citations


In this paper we generalize the newsboy model to optimize the scheduling of purchasing orders for large projects. The timely completion of a typical project hinges upon receiving all the purchased components by the time they are scheduled to be used. We show how to minimize the total expected cost of the project, including lateness penalty cost and holding costs. The main contribution of the paper is in solving the problem for more than one component while considering the interdependencies that exist among them. We outline an analytic solution and present fast heuristics.

Original languageEnglish
Pages (from-to)185-195
Number of pages11
JournalEuropean Journal of Operational Research
Issue number2
StatePublished - 23 Jul 1993


  • Lead time
  • Newsboy problem
  • PERT
  • Project management
  • Purchasing


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