Minimizing Makespan in No-Wait Job Shops

An efficient simple metaheuristic for minimizing the makespan in two-machine no-wait job shops

Makespan Minimization in No-Wait Flow Shops: A Polynomial Time Approximation Scheme

We investigate the approximability of no-wait permutation flow shop scheduling problem under the makespan criterion. We present a polynomial time approximation scheme (PTAS) for problem on any fixed number of machines.

A heuristic for scheduling two-machine no-wait flow shops with anticipatory setups

We consider a problem of scheduling jobs in two-machine no-wait ow shops for which the objective is to minimize the makespan. Each job, upon completion of its processing on the rst machine, must be transferred immediately to the second machine due to a no-wait in process constraint. Every job requires a setup time on each machine before it is processed. The setup on the second machine is antici...

A Fluid Heuristic for Minimizing Makespan in Job Shops

We describe a simple online heuristic for scheduling job shops. We assume there is a fixed set of routes for the jobs, and many jobs, say N , on each route. The heuristic uses safety stocks and keeps the bottleneck machine busy at almost all times, while the other machines are paced by the bottleneck machine. We perform a probabilistic analysis of the heuristic, under some assumptions on the di...

Solving Re-entrant No-wait Flow Shop Scheduling Problem

In this study, we consider the production environment of no-wait reentrant flow shop with the objective of minimizing makespan of the jobs. In a reentrant flow shop, at least one job should visit at least one of the machines more than once. In a no-wait flowshop scheduling problem, when the process of a specific job begins on the first machine, it should constantly be processed without waiting ...