Results 171 to 180 of about 197,282 (196)
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Scheduling flexible flow shops with sequence-dependent setup effects

IEEE Transactions on Robotics and Automation, 2000
This paper presents a Lagrangian relaxation-based approach for production scheduling of flexible flow shops (PSFFS) where sequence-dependent setup effects are significant. PSPFS is first formulated as a separable integer programming problem with synchronization constraints between production and machine usage. Lagrangian relaxation is then applied, and
Chung-Yang Liu, Shi-Chung Chang
openaire   +1 more source

Approximation algorithms for two-stage flexible flow shop scheduling

Journal of Combinatorial Optimization, 2019
This paper deals with a two-stage flexible flow shop problem with a single machine at the first stage and \(m\) identical parallel machines at the second stage. The optimization criterion is the minimization of the makespan. First, a \((2 + \epsilon)\)-approximation algorithm is given.
Minghui Zhang, Yan Lan, Xin Han
openaire   +1 more source

Uncertain flexible flow shop scheduling problem subject to breakdowns

Journal of Intelligent & Fuzzy Systems, 2016
Flexible flow shop scheduling problems become more complex when uncertain factors are taken into consideration. Most literature are under the assumption that machines are continuous available. But, a machine can be unavailable for many reasons, such as breakdown and planned preventive maintenance.
Jiayu Shen, Yuanguo Zhu
openaire   +2 more sources

A heuristic Gupta-based flexible flow-shop scheduling algorithm

SMC 2000 Conference Proceedings. 2000 IEEE International Conference on Systems, Man and Cybernetics. 'Cybernetics Evolving to Systems, Humans, Organizations, and their Complex Interactions' (Cat. No.00CH37166), 2002
In simple flow-shop problems, each machine operation center includes just one machine. If at least one machine center includes more than one machine, the scheduling problem becomes a flexible flow-shop problem. Flexible flow-shops can thus be thought of as generalizations of simple flow-shops. C. Sriskandarajah and S.P.
Tzung-Pei Hong   +2 more
openaire   +1 more source

Study on No-Wait Flexible Flow Shop Scheduling with Multi-objective

2019
A multi-objective flexible flow shop scheduling model is constructed inclusive of production period, total expense, and mean flow time, which is based on the characteristics of dual-resource constrained no-wait flow shop scheduling problem with unrelated parallel machines.
Ze Tao, Xiaoxia Liu
openaire   +1 more source

Flow Shop Scheduling at Continuous Casters with Flexible Job Specifications

2011
We propose a new approach for the sequencing of slabs at continuous casters. Here, typical characteristics such as input supply in batch quantities, continuous casting width adjustment, width ranges for orders as well as setup times due to several process constraints are taken into account.
Matthias G. Wichmann   +2 more
openaire   +1 more source

Scheduling tasks in the flexible flow shop with vehicles

2002
International ...
Pawlak, G.   +2 more
openaire   +2 more sources

Bilevel learning for large-scale flexible flow shop scheduling

Computers & Industrial Engineering, 2022
Longkang Li   +8 more
openaire   +1 more source

Performance analysis of flexible flow shop with parallel manufacturing cells

Computers & Industrial Engineering, 2022
Jinbiao Chen   +4 more
openaire   +1 more source

Effective constructive heuristics for distributed no-wait flexible flow shop scheduling problem

Computers and Operations Research, 2021
Weishi Shao   +2 more
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