Time slack‐based techniques for robust project scheduling subject to resource uncertainty

Time slack‐based techniques for robust project scheduling subject to resource uncertainty

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Article ID: iaor20116867
Volume: 186
Issue: 1
Start Page Number: 443
End Page Number: 464
Publication Date: Jun 2011
Journal: Annals of Operations Research
Authors: , ,
Keywords: project management, heuristics, simulation: applications
Abstract:

The resource‐constrained project scheduling problem (RCPSP) has been the subject of a great deal of research during the previous decades. This is not surprising given the high practical relevance of this scheduling problem. Nevertheless, extensions are needed to be able to cope with situations arising in practice such as multiple activity execution modes, activity duration changes and resource breakdowns. In this paper we analytically determine the impact of unexpected resource breakdowns on activity durations. Furthermore, using this information we develop an approach for inserting explicit idle time into the project schedule in order to protect it as well as possible from disruptions caused by resource unavailabilities. This strategy will be compared to a traditional simulation‐based procedure and to a heuristic developed for the case of stochastic activity durations.

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