Malgorzata Sterna

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The paper concerns the application of a non-classical performance measure, a late work criterion (Y, Yw), to scheduling problems. It estimates the quality of the obtained solution with regard to the duration of the late parts of tasks not taking into account the quantity of this delay. The paper provides the formal definition of the late work parameter,(More)
In this paper, metaheuristic approaches for the two-machine flow shop problem with a common due date and the weighted late work performance measure (F2|dj=d|Yw) are presented. The late work criterion estimates the quality of a solution with regard to the duration of the late parts of jobs, not taking into account the quantity of the delay for the fully late(More)
The paper is on the two-machine non-preemptive flow-shop scheduling problem with a total weighted late work criterion and a common due date (F 2jdi 1⁄4 djYw). The late work performance measure estimates the quality of the obtained solution with regard to the duration of late parts of tasks not taking into account the quantity of this delay. We prove the(More)
In this paper we analyze different solution procedures for the two-machine flow shop scheduling problem with a common due date and weighted late work criterion, i.e. for problem F2jdj ZdjYw , which is known to be binary NP-hard. In computational experiments we compare the practical efficiency of a dynamic programming approach, an enumerative method and a(More)
The paper concerns a small flexible manufacturing system consisting of three CNC machines: a lathe machine, milling machine and measurement center and a single robot, located at the Poznań University of Technology. A short description of the production environment, which can be modeled as the extended job shop system with open shop sections within(More)