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Journal of Scheduling

, Volume 14, Issue 6, pp 557–569 | Cite as

Exact methods for the resource levelling problem

  • Thorsten GatherEmail author
  • Jürgen Zimmermann
  • Jan-Hendrik Bartels
Article

Abstract

We present a project scheduling problem subject to general temporal constraints where the utilization of a set of renewable resources has to be smoothed over time. For solving the NP-hard optimization problem, we point out some important structural properties and introduce a new enumeration scheme. Combining this enumeration scheme with some branch-and-bound techniques, we propose an appropriate solution procedure for the project scheduling problem at hand. To outline the practical importance of resource levelling, we sketch exemplary the optimization of mid-term planning schedules with regard to the resource requirements of IT projects. Finally, we present results from a comprehensive computational study on problem instances of the well-known rlp_j10 and rlp_j20 test sets devised by Kolisch et al. (Benchmark Instances for Project Scheduling Problems, Kluwer, Boston, 1999).

Keywords

Resource levelling Renewable resources Project scheduling Enumeration Branch-and-bound 

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Thorsten Gather
    • 1
    Email author
  • Jürgen Zimmermann
    • 1
  • Jan-Hendrik Bartels
    • 1
  1. 1.Institute of Management and EconomicsClausthal University of TechnologyClausthal-ZellerfeldGermany

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