Szukana fraza: [Abstrakt = "In this paper, we analyse single processor scheduling problems with both learning and aging effects to minimize the following criteria\: the maximum completion time with release dates, the maximum lateness and the number of late jobs. The learning effect can be understood as a process of an acquiring experience that leads to increasing efficiency of a processor, which results in decreasing processing times of jobs. The opposite phenomenon called the aging effect decreases the efficiency of a processor. The measurable result of this effect is that the time required to process a single item decreases as more units are processed. We prove properties of the investigated problems and on their basis we provide optimal polynomial\-time algorithms for some cases"]
