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Author : Vicki Lynn Daniels
Release : 1983
Genre : Economic lot size
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis The Lot Sizing and Sequencing Problem in Process Industries by : Vicki Lynn Daniels
Download or read book The Lot Sizing and Sequencing Problem in Process Industries written by Vicki Lynn Daniels. This book was released on 1983. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Vicki Lynn Daniels
Release : 1985
Genre : Economic lot size
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis The Lot Sizing and Sequencing Problems in Process Industries by : Vicki Lynn Daniels
Download or read book The Lot Sizing and Sequencing Problems in Process Industries written by Vicki Lynn Daniels. This book was released on 1985. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Ravi Ramya
Release : 2019-01-04
Genre : Business & Economics
Kind : eBook
Book Rating : 220/5 ( reviews)
Book Synopsis Capacitated Lot Sizing Problems in Process Industries by : Ravi Ramya
Download or read book Capacitated Lot Sizing Problems in Process Industries written by Ravi Ramya. This book was released on 2019-01-04. Available in PDF, EPUB and Kindle. Book excerpt: This book examines the Capacitated Lot Sizing Problem (CLSP) in process industries. In almost all process industries, there are situations where products have short/long setup times, and the setup of the product and its subsequent production are carried over, across consecutive periods. The setup of a product is carried over across more than one successive period in the case of products having long setup times. A product having short setup has its setup time less than the capacity of the period in which it is setup. The setup is immediately followed by its production of the product and it may also be carried over, across successive time period(s). Many process industries require production of a product to occur immediately after its setup (without the presence of idle time between the setup and production of the product), and they also require the product to be continuously produced without any interruption. This book considers a single-machine, single-level and multiple-item CLSP problem. This book introduces the Capacitated Lot Sizing Problem with Production Carryover and Setup Crossover across periods (CLSP-PCSC). Mathematical models are proposed which are all encompassing that they can handle continuous manufacturing (as in process industries), and also situations where the setup costs and holding costs are product dependent and time independent/time dependent, with possible backorders, and with other appropriate adaptations. Comprehensive heuristics are proposed based on these mathematical models to solve the CLSP-PCSC. The performance of the proposed models and heuristics are evaluated using problem instances of various sizes. This book also covers mathematical models developed for the Capacitated Lot Sizing Problem with Production Carryover and Setup Crossover across periods, and with Sequence-Dependent Setup Times and Setup Costs (CLSP-SD-PCSC). These models allow the presence of backorders and also address real-life situations present in process industries such as production of a product starting immediately after its setup and its uninterrupted production carryover across periods, along with the presence of short/long setup times. Heuristics proposed for the CLSP-PCSC can be extended to address the CLSP problem with sequence dependent setup costs and setup times. All the models and heuristics proposed in this book address some real-life considerations present in process industries.
Author :
Release : 2005
Genre :
Kind : eBook
Book Rating : /5 ( reviews)
Book Synopsis THE GENERAL LOT SIZING AND SCHEDULING PROBLEM WITH SEQUENCE DEPENDENT CHANGEOVERS. by :
Download or read book THE GENERAL LOT SIZING AND SCHEDULING PROBLEM WITH SEQUENCE DEPENDENT CHANGEOVERS. written by . This book was released on 2005. Available in PDF, EPUB and Kindle. Book excerpt: In this study, we consider the General Lot Sizing and Scheduling Problem in single level capacitated environments with sequence dependent item changeovers. Process industries may be regarded as suitable application areas of the problem. The focus on capacity utilization and intensively time consuming changeovers necessitate the integration of lot sizing and sequencing decisions in the production plan. We present a mathematical model which captures the essence of cases in the most generic and realistic setting of the problem. We discuss the impact and validity of some of the assumptions commonly encountered in the related literature. We also represent the problem using an alternative formulation and attempt to enhance the formulations with the use of some additional inequalities. Finally, we develop a heuristic by restricting the number of possible changeovers. Computational results are discussed.
Author : Daniel Quadt
Release : 2012-09-14
Genre : Business & Economics
Kind : eBook
Book Rating : 01X/5 ( reviews)
Book Synopsis Lot-Sizing and Scheduling for Flexible Flow Lines by : Daniel Quadt
Download or read book Lot-Sizing and Scheduling for Flexible Flow Lines written by Daniel Quadt. This book was released on 2012-09-14. Available in PDF, EPUB and Kindle. Book excerpt: The book considers the lot-sizing and scheduling problem for flexible flow line production facilities. Flexible flow lines are flow lines with parallel machines on some or all production stages. They can be found in a vast number of industries. A three-phased solution approach is presented that solves the integrated lot-sizing and scheduling problem in a hierarchical manner. The approach is able to handle several important features relevant in industrial practice, such as back-orders and setup carry-over. The developed solution procedures solve practically sized problems in a relatively short amount of time. One of the procedures is based on a novel mixed integer programming (MIP) model, which employs integer variables instead of binary variables. This makes it possible to find (near-)optimal solutions using standard algorithms such as CPLEX. Another procedure uses two nested Genetic Algorithms. An application of the framework in the semiconductor industry is given.
