Under just-in-time production, this paper studies a single machine common due-window (denoted by CONW) assignment scheduling problem with position-dependent weights and resource allocations. A job’s actual processing time can be determined the assigned to job. allocation model is divided into linear convex models, our goal find an optimal location, job sequence allocation. We prove that weighte...

This paper considers the SLK/DIF due window assignment problems on a single machine with general job-dependent positional effect, where actual processing time of job is subject to and effect. Production schedulers may decide outsource/reject some jobs by paying corresponding costs. Based whether accept tardiness jobs, we consider two different objectives under slack assignment, respectively. Th...

We study problems of scheduling n unit-time jobs on m identical parallel machines, in which a common due window has to be assigned to all jobs. If a job is completed within the due window, then no scheduling cost incurs. Otherwise, a job-dependent earliness or tardiness cost incurs. The job completion times, the due window location and the size are integer valued decision variables. The objecti...

In this paper, we consider a machine scheduling problem where jobs should be completed at times as close as possible to their respective due dates, and hence both earliness and tardiness should be penalized. Specifically, we consider the problem with a set of independent jobs to be processed on several identical parallel machines. All the jobs have a given common due window. If a job is complet...

nowadays, scheduling problems have a considerable application in production and service systems. in this paper, we consider the scheduling of n jobs on a single machine assuming no machine idleness, non-preemptive jobs and equal process times. in many of previous researches, because of the delivery dalays and holding costs, earliness and tardiness penalties emerge in the form of linear combinat...

In this paper, we consider the slack due-window assignment model and study a single machine scheduling problem of linear time-dependent deteriorating jobs and a deteriorating maintenance activity. The cost for each job consists of four components: earliness, tardiness, window location and window size. The objective is to schedule the jobs and to assign the maintenance activity and due-windows s...

Traditional machining economics looks into the optimal set of machining conditions under which the production cost or time per part is minimized. No due dates are included in the consideration. Job sequencing searches for the optimal order of jobs so that lateness and/or earliness is minimized. The optimization assumes that processing times are fixed. In practice, processing times are variable ...

We study multitasking scheduling and due-window assignment problems in a single machine, which can be found various application domains. In environment, unfinished job always interrupts in-processing job. common due window assignment, the aim is to find optimal minimise value of earliness tardiness penalty. this paper, we two problems, where objective first problem earliness, tardiness, startin...