Scheduling Unit-Time Open Shops with Deadlines
نویسندگان
چکیده
منابع مشابه
No-idle time Scheduling of Open shops: Modeling and Meta-heuristic Solution Methods
In some industries as foundries, it is not technically feasible to interrupt a processor between jobs. This restriction gives rise to a scheduling problem called no-idle scheduling. This paper deals with scheduling of no-idle open shops to minimize maximum completion time of jobs, called makespan. The problem is first mathematically formulated by three different mixed integer linear programming...
متن کاملOn-line scheduling of small open shops
We investigate the problem of on-line scheduling open shops of two and three machines with an objective of minimizing the schedule makespan. We 1rst propose a 1.848-competitive permutation algorithm for the non-preemptive scheduling problem of two machines and show that no permutation algorithm can be better than 1.754-competitive. Secondly, we develop a (27=19)-competitive algorithm for the pr...
متن کاملUnit-time Open-shop Scheduling Problems with Symmetric Objective Functions
The paper deals with the open-shop problems with unit-time operations and nonde-creasing symmetric objective functions depending on job completion times. We construct two schedules, one of them is optimal for any symmetric convex function, the other is optimal for any symmetric concave function. Each of these two schedules is given by an analytically deened function which assigns to each operat...
متن کاملScheduling jobs in open shops with limited machine availability
In this paper, open shop scheduling problems with limited machine availability are studied. Such a limited availability of machines may appear in many real-life situations, e.g. as preventive maintenance activities. Three types of jobs are distinguished: nonpreemptable, resumable and preemptable. An operation of a resumable job if not completed before a non-availability period of a machine may ...
متن کاملAn NC Algorithm for Scheduling Unit-Time Jobs With Arbitrary Release Times and Deadlines
The problem of scheduling n unit-time jobs with real-valued release times and deadlines is shown to be in NC. The solution is based on characterizations of a canonical schedule and best subset of jobs to be scheduled in a given time interval. The algorithm runs in O((logn)2) time and uses O(n'ljlogn) processors.
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Operations Research
سال: 1994
ISSN: 0030-364X,1526-5463
DOI: 10.1287/opre.42.1.189