A practical use of Jackson's preemptive schedule for solving the job shop problem
Annals of Operations Research
Scheduling Algorithms
Improved heuristics for the early/tardy scheduling problem with no idle time
Computers and Operations Research
SODA '06 Proceedings of the seventeenth annual ACM-SIAM symposium on Discrete algorithm
On single-machine scheduling without intermediate delays
Discrete Applied Mathematics
Computers and Industrial Engineering
Homogeneously non-idling schedules of unit-time jobs on identical parallel machines
Discrete Applied Mathematics
Discrete Applied Mathematics
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This paper investigates the one-machine sequencing problem in a workshop where the machine has to satisfy the no-idle constraint, that is, the machine must process jobs without interruption. The objective is to minimize the makespan. Each job has a release date for which it is available for processing on the machine and a delivery time during which it must remain in the system after being processed by the machine. This problem has been studied without adding the no-idle constraint. It is solved in polynomial time, when the preemption of jobs is allowed, applying Jackson's rule. But, when the preemption of jobs is not allowed, it becomes strongly NP-hard. Although, it can be solved in a very short time using Carlier's branch and bound algorithm. Below, we propose to adapt Carlier's branch and bound method in order to calculate an optimal nonpreemptive schedule for the problem when adding the no-idle constraint.