نتایج جستجو برای: setup and transportation times

تعداد نتایج: 16850871  

Journal: :J. Scheduling 2015
Alewyn P. Burger C. G. Jacobs Jan H. van Vuuren S. E. Visagie

In this paper, a scheduling problem is considered which arises in the packaging industry. Plastic and foil wrappers used for packaging candy bars, crisps and other snacks typically require overlay printing with multiple colours. Printing machines used for this purpose usually accommodate a small number of colours which are loaded into a magazine simultaneously. If two consecutively scheduled pr...

2012
Anne Benoit Mathias Coqblin Jean-Marc Nicod Laurent Philippe Veronika Rehn-Sonigo

In this paper, we tackle pipeline workflow applications that are executed on a distributed platform with setup times. In such applications, several computation stages are interconnected as a linear application graph, and each stage holds a buffer of limited size where intermediate results are stored and a processor setup time occurs when passing from one stage to another. The considered stage/p...

This paper presents a scheduling problem with unrelated parallel machines and sequencedependent setup times that minimizes the total weighted tardiness. A new branch-and-bound (B and B) algorithm is designed incorporating the lower and upper bounding schemes and several dominance properties. The lower and upper bounds are derived through an assignment problem and the composite dispatching rule ...

Journal: :Gazi Üniversitesi Fen Bilimleri dergisi 2022

Makine çizelgeleme problemlerinde tüm makineler daima kullanılabilir durumda değildirler. Planlı bakım, öğle yemeği ve dinlenme molaları gibi nedenlerle periyodik olarak kesintilere uğrayabilmektedirler. Ancak literatürde genellikle bu durum göz ardı edilmektedir. Bu çalışmada kullanılamayan zaman dilimlerinin sıra bağımlı hazırlık sürelerinin olduğu ilişkisiz paralel makine problemi ele alınmı...

Alistair Clark Masoumeh Mahdieh Mehdi Bijari,

This paper breaks new ground by modelling lot sizing and scheduling in a flexible flow line (FFL) simultaneously instead of separately. This problem, called the ‘General Lot sizing and Scheduling Problem in a Flexible Flow Line’ (GLSP-FFL), optimizes the lot sizing and scheduling of multiple products at multiple stages, each stage having multiple machines in parallel. The objective is to satisf...

Journal: :Journal of Intelligent Manufacturing 2022

Abstract This paper addresses the unrelated parallel machine scheduling problem with sequence and dependent setup times eligibility constraints. The objective is to minimize maximum completion time (makespan). Instances of more than 500 jobs 50 machines are not uncommon in industry. Such large instances become increasingly challenging provide high-quality solutions within limited amount computa...

Journal: :Engineering Applications of Artificial Intelligence 2021

Permutation flowshop scheduling problem with sequence-dependent setup times (PFSP-SDST) and makespan minimisation is NP-hard. It has important practical applications, for example, in the cider industry print industry. There exist several metaheuristic algorithms to solve this problem. However, within time limits, those still either find low quality solutions or struggle large problems. In paper...

This paper presents a new mathematical model for a bi-objective job shop scheduling problem with sequence-dependent setup times that minimizes the weighted mean completion time and the weighted mean tardiness time. For solving this multi-objective model, we develop a fuzzy multi-objective linear programming (FMOLP) model. In this problem, a proposed FMOLP method is applied with respect to the o...

2017
Pankaj Sharma

Job shop scheduling problems occurs in automobile industry, aerospace industry, printing industry, and chemical industry. Job shop scheduling problems are real world and complex. The present work assesses the effect of change in setup times levels on make span, maximum flow time and maximum tardiness measures. The model of the job shop is developed in PROMODEL simulation software. Three levels ...

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