Group scheduling with independent setup times, ready times, and deteriorating job processing times

In this paper we investigate a single machine scheduling problem with deteriorating jobs and group technology assumption. By deteriorating jobs and group technology assumption, we mean that job processing times are simple linear functions of its starting times. The group setup times are assumed to be known and fixed. We attempt to minimize the makespan with ready times of the jobs. For a special case, we show that the problem can be solved in polynomial time when deterioration and group technology are considered simultaneously.