This paper studies a new generalization of the regular permutation flowshop scheduling problem (PFSP) referred to as the distributed permutation flowshop scheduling problem or DPFSP. Under this generalization, we assume that there are a total of identical factories or shops, each one with machines disposed in series. A set of n available jobs have to be distributed among the factories and then ...

Flowshop scheduling deals with determination of optimum sequence of jobs to be processed on some machines in a fixed order so as to satisfy certain scheduling criteria. The general problem of scheduling has been shown to be NP-complete. Exact algorithms, such as integer programming and branch-and-bound, guarantee optimality but do not yield the optimum solution in polynomial time even for probl...

This paper addresses the two-machine permutation flowshop problem with deterioration. The objectives are minimizing makespan and average tardiness. Jobs have a baseline process time in each machine due date. actual to job depends on performance level at start of job, which is function previously processed jobs their wear/deterioration effect machine. article proposes multiple heuristics compreh...

The assembly flowshop scheduling problem has been addressed recently in the literature. There are many problems that can be modeled as assembly flowshop scheduling problems including queries scheduling on distributed database systems and computer manufacturing. The problem has been addressed with respect to either makespan or total completion time criterion in the literature. In this paper, we ...

Ant colony optimization (ACO) is a meta-heuristic proposed to derive approximate solutions for computationally hard problems by emulating the natural behaviors of ants. In the literature, several successful applications have been reported for graph-based optimization problems, such as vehicle routing problems and traveling salesman problems. In this paper, we propose an application of the ACO t...

This paper addresses the Permutation Flowshop Problem with minimization of makespan, which is denoted by F |prmu|Cmax . In the permutational scenario, the sequence of jobs has to remain the same in all machines. The Flowshop Problem (FSP) is known to be NP-hard when more than three machines are considered. Thus, for medium and large scale instances, highquality heuristics are needed to find goo...