Worker coordination policies in parallel station systems: performance models for a set of jobs and for continuous arrival of jobs

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Peltokorpi, Jaakko
dc.contributor.author Tokola, Henri
dc.contributor.author Niemi, Esko
dc.date.accessioned 2018-06-18T09:19:33Z
dc.date.available 2018-06-18T09:19:33Z
dc.date.issued 2014
dc.identifier.citation Peltokorpi , J , Tokola , H & Niemi , E 2014 , ' Worker coordination policies in parallel station systems: performance models for a set of jobs and for continuous arrival of jobs ' INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH , vol 53 , no. 6 . DOI: 10.1080/00207543.2014.918290 en
dc.identifier.issn 0020-7543
dc.identifier.issn 1366-588X
dc.identifier.other PURE UUID: 6377f309-7bd2-44f8-b539-f6764aef0670
dc.identifier.other PURE ITEMURL: https://research.aalto.fi/en/publications/worker-coordination-policies-in-parallel-station-systems-performance-models-for-a-set-of-jobs-and-for-continuous-arrival-of-jobs(6377f309-7bd2-44f8-b539-f6764aef0670).html
dc.identifier.other PURE LINK: http://www.tandfonline.com/doi/full/10.1080/00207543.2014.918290
dc.identifier.other PURE FILEURL: https://research.aalto.fi/files/21690955/ENG_Peltokorpi_Jaakko_Tokola_Henri_Worker_coordination_policies_International_journal_of_production_research.pdf
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/31911
dc.description VK: T20307
dc.description.abstract Varying workloads and uncertain processing times in parallel assembly cause idle times for skilled, high-cost workers. This idleness can be avoided and the utilisation of the workers improved by allowing workers to move between the stations to help each other. Worker movement between assembly stations needs efficient and feasible coordination, and therefore, this paper compares four different worker coordination policies: no helping, floater, pairs and complete helping. The dynamics of the policies are modelled by studying the parallel assembly as a continuous-time Markov process. The system is studied with two different job release cases for non-identical jobs (customised products). In the first case, a given number of jobs have to be completed by the entire system. In the second case, new jobs arrive with a Poisson-distributed rate. The models assume that when one worker helps another, their collaborative inefficiency reduces the productivity. The models are used in numerical experiments to compare the performances of worker coordination policies as average job cycle times. The main conclusions from the results suggest the use of the complete helping policy in minor collaborative inefficiency conditions, especially with a given set of jobs. The pairs policy is a reasonable alternative in major inefficiency conditions with the continuous arrival of jobs. en
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries INTERNATIONAL JOURNAL OF PRODUCTION RESEARCH en
dc.relation.ispartofseries Volume 53, issue 6 en
dc.rights openAccess en
dc.subject.other 214 Mechanical engineering en
dc.subject.other 216 Materials engineering en
dc.title Worker coordination policies in parallel station systems: performance models for a set of jobs and for continuous arrival of jobs en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Engineering Design and Production en
dc.subject.keyword collaborative efficiency
dc.subject.keyword flexibility
dc.subject.keyword moving workers
dc.subject.keyword parallel assembly
dc.subject.keyword worker coordination policy
dc.subject.keyword 214 Mechanical engineering
dc.subject.keyword 216 Materials engineering
dc.identifier.urn URN:NBN:fi:aalto-201806183329
dc.identifier.doi 10.1080/00207543.2014.918290
dc.type.version acceptedVersion


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