(AGH University of Science and Technology Press, 2016) Hasan, Gulzar; Hasan, Syed Suhaib
We have considered the problem of annualized hours (AH) in workforce management. AH is a method of distributing working hours with respect to the demand over a year. In this paper, the basic Manpower planning problem with AH flexibility is formulated as a fuzzy mathematical programming problem with flexible constraints. Three models of the AH planning problem under conditions of fuzzy uncertainty are presented using different aggregation operators. These fuzzy models soften the rigidity of the deterministic model by relaxing some constraints with the use of flexible programming. Finally, an illustration is given with a computational experiment performed on a realistic-scale case problem of an automobile company to demonstrate and analyze the effectiveness of the fuzzy approach over a deterministic model.
(AGH University of Science and Technology Press, 2016) Klimek, Marcin; Łebkowski, Piotr
The paper presents the resource-constrained project scheduling problem with the makespan minimization criterion. To solve the problem, the authors propose insertion algorithms that generate schedules with the use of forward serial and parallel decoding procedures. Schedules are improved with the use of the double justification by the extremes technique (first right and then left justification). The efficiency of the procedures proposed is tested on standard test problems from the PSPLIB library.
