نتایج جستجو برای: scheduling and optimization

تعداد نتایج: 16892955  

2006
Paulo Leitão Francisco Restivo

Manufacturing scheduling is a complex combinatorial problem, particularly in distributed and dynamic environments. This paper presents a holonic approach to manufacturing scheduling, which in opposite to traditional approaches, distributes the scheduling functions over several entities, combining their calculation power and local optimization. In this scheduling and control approach, the schedu...

2015
Zhuangzhi Li Zukui Li

Robust optimization can provide safe and tractable analytical approximation for the chance constrained optimization problem. In this work, we studied the application of robust optimization approximation in solving chance constrained planning and scheduling problem under uncertainty. Four different robust optimization approximation methods for improving the quality of robust solution were invest...

Journal: :journal of industrial engineering, international 2011
s. amir abrishamifar

determination a sequence of extracting ore is one of the most important problems in mine annual production scheduling. production scheduling affects mining performance especially in a poly-metallic open pit mine with considering the imposed operational and physical constraints mandated by high levels of reliability in relation to the obtained actual results. one of the important operational con...

2010
Zukui Li Marianthi G. Ierapetritou

The rolling horizon method has been proposed to address the integrated production planning and scheduling optimization problem. Since the method can generally result in small-scale optimization model and fast solution, it has been used in a number of applications in realistic industrial planning and scheduling problems. In this paper, it is first pointed out that the incorporation of valid prod...

2012
Mitsuo Gen Lin Lin

Scheduling is an important tool for a manufacturing system, where it can have a major impact on the productivity of a production process. In manufacturing systems, the purpose of scheduling is to minimize the production time and costs, by assigning a production facility when to make, with which staff, and on which equipment. Production scheduling aims to maximize the efficiency of the operation...

Journal: :international journal of supply and operations management 2015
hadi mokhtari mehrdad dadgar

in this paper, the flexible job shop scheduling problem with machine flexibility and controllable process times is studied. the main idea is that the processing times of operations may be controlled by consumptions of additional resources. the purpose of this paper to find the best trade-off between processing cost and delay cost in order to minimize the total costs. the proposed model, flexibl...

رشیدی نژاد, مسعود , روح الامینی, مهدی ,

The simultaneous scheduling of energy and primary reserve is one of most important recent researches. However, in these researches, operation constraints and transmission limitations have been neglected. So it is possible that the power flow results be infeasible since some real constraints are not considered. In this paper congestion constraint in transmission lines, technical capabilities and...

Journal: :JCP 2011
Bin Jiao Qunxian Chen Shaobin Yan

Considering current situation of production scheduling with uncertainties in modern manufacturing enviroments, flow shop production scheduling model is established based on the theory of fuzzy programming, in which fuzzy processing time is considered and the duration time of intermediate is unlimited. The maximum membership function of mean value has been applied to solve the non-linear fuzzy s...

2011
D. Y. Sha Hsing-Hung Lin

Multi-objective open-shop scheduling is definitely significant in practical. However, the research focused on multi-objective open-shop scheduling was relatively scarce. This article proposed a particle swarm optimization to address open-shop scheduling problems with multiple objectives. Originally, particle swarm optimization was invented to treat continuous optimization problems. In this pape...

2003
Miroljub KLJAJIĆ Igor BERNIK Uroš BRESKVAR

This paper describes an approach to using simulation and visualization of discrete event oriented simulation models for multi-criteria scheduling optimization with genetic algorithms. A simulation model was used for fitness function computation of genetic algorithm results, as well as for visual representation of process behavior of a chosen schedule following genetic algorithm optimization. In...

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