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Time-resource tradeoff problem [project scheduling]

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2 Author(s)
Pulat, P.S. ; Sch. of Ind. Eng., Oklahoma Univ., Norman, OK, USA ; Horn, S.J.

Given a project network with a set of tasks to be completed according to some precedence relationship, the objective is to determine efficient project schedules for a range of project realization times. This problem is referred to as the time-resource tradeoff problem. Associated with each task are its normal duration, maximum allowable crash range, and resource cost per time unit for each resource. A multiple objective linear programming (MOLP) model is presented. The time-cost tradeoff technique is extended to solve the time-resource tradeoff problem. The methodology assumes that the project manager's (the decision maker) utility function over the resource consumption costs is linear with unknown weights for each resource. Enumerative and interactive algorithms utilizing Geoffrion's P(λ) approach, are presented as solution techniques. It is demonstrated that both versions have desirable computational times

Published in:

Engineering Management, IEEE Transactions on  (Volume:43 ,  Issue: 4 )

Date of Publication:

Nov 1996

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