In this paper, the problem of batch scheduling in a flexible flow shop environment is studied. It is assumed that machines in some stages are able to process a number of jobs simultaneously. The applications of this problem can be found in various industries including spring and wire manufacturing and in auto industry. A mixed integer programming formulation of the problem is presented and it i...

In this paper, the problem of batch scheduling in a flexible flow shop environment is studied. It is assumed that machines in some stages are able to process a number of jobs simultaneously. The applications of this problem can be found in various industries including spring and wire manufacturing and in auto industry. A mixed integer programming formulation of the problem is presented and it i...

Rosa: Tape 1, Side B The recording begins in a delicatessen. Rosa is with her mother and twin brother. Over the noise of cars passing the shop, Rosa’s mother can be heard ordering some Cabanas while Rosa sings a song by her favourite pop group 5ive. As they leave the shop, Rosa says goodbye to the shopkeeper who had given the twins a free meat pie each. Their mother asks them to wait until they...

Stochastic dynamic job shop scheduling problem with consideration of sequence-dependent setup times are among the most difficult classes of scheduling problems. This paper assesses the performance of nine dispatching rules in such shop from makespan, mean flow time, maximum flow time, mean tardiness, maximum tardiness, number of tardy jobs, total setups and mean setup time performance measures ...

We consider the scheduling problems F2 j jCmax and F2 j no-wait jCmax, i.e. makespan minimization in a two machine ow shop, with and without no wait in process. For both problems solution algorithms based on sorting with O(n logn) running time are known, where n denotes the number of jobs [Johnson 1954, Gilmore & Gomory 1964]. We prove that no asymptotically faster algorithms can solve these pr...