Analysis of reactive scheduling problems in a job shop environment
نویسندگان
چکیده
منابع مشابه
Analysis of reactive scheduling problems in a job shop environment
In this paper, we study the reactive scheduling problems in a stochastic manufacturing environment. Speci®cally, we test the several scheduling policies under machine breakdowns in a classical job shop system. In addition, we measure the eect of system size and type of work allocation (uniform and bottleneck) on the system performance. The performance of the system is measured for the mean tar...
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Planning and scheduling problems in various industrial environments are combinatorial and very difficult. Generally, it is extremely hard to solve these types of problems in their general form. Scheduling can be formulated as a problem of determining the best sequence to execute a set of tasks on a set of resources, respecting specific constraints like precedence or disjunctive constraints (Car...
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In the classical job shop scheduling problem (JSSP), n jobs are processed to completion on m unrelated machines. Each job requires processing on each machine exactly once. For each job, technology constraints specify a complete, distinct routing which is fixed and known in advance. Processing times are sequence-independent, fixed, and known in advance. Each machine is continuously available fro...
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In this paper, mathematical models for permutation flow shop scheduling and job shop scheduling problems are proposed. The first problem is based on a mixed integer programming model. As the problem is NP-complete, this model can only be used for smaller instances where an optimal solution can be computed. For large instances, another model is proposed which is suitable for solving the problem ...
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Most scheduling models assume that the jobs have xed processing times. However, in real-life applications the processing time of a job often depends on the amount of resources such as facilities, manpower , funds, etc. allocated to it, and so its processing time can be reduced when additional resources are assigned to the job. A scheduling problem in which the processing times of the jobs can b...
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ژورنال
عنوان ژورنال: European Journal of Operational Research
سال: 2000
ISSN: 0377-2217
DOI: 10.1016/s0377-2217(99)00311-2