 Scheduling jobs with uncertain setup times and sequence dependencyS. C. Kim and P. M. Bobrowski Omega, 1997, vol. 25, issue 4, 437-447 Abstract: In many real-world job-shop situations, jobs are sequence dependent and the setup times for those jobs vary stochastically because of such random factors as crew skills, temporary shortage of equipment, tools and setup crews, and unexpected breakdowns of fixtures and tools during a setup operation. Assuming these random setup times to be fixed at, say, their expected values, which is often done in the extant literature, may lead to development of inefficient sequencing rules. The purpose of the present paper is to investigate the impact of setup-time variation on sequencing decisions, with normally-distributed setup times. Results show that setup-time variation has a negative impact on shop performance, but does not diminish the advantages of setup-conscious sequencing rules over conventional sequencing rules in dealing with setup times. A simulation model of a nine-machine job-shop is used in the investigation. Keywords: job-shop; scheduling; setup; times; sequencing; simulation (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:jomega:v:25:y:1997:i:4:p:437-447 Ordering information: This journal article can be ordered from Access Statistics for this article Omega is currently edited by B. Lev More articles in Omega from Elsevier |
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