Download or read book Scheduling Parts Through a Two stage Tandem Flexible Flow Shop written by and published by . This book was released on 1992 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book scheduling parts through a two stage tandem flexible flow shop written by j. blazeweiz and published by . This book was released on 1992 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book a note on flexibile flowshop scheduling with two stages written by jacek blazeweiz and published by . This book was released on 1994 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flow Shop Scheduling written by Hamilton Emmons and published by Springer Science & Business Media. This book was released on 2012-09-14 with total page 346 pages. Available in PDF, EPUB and Kindle. Book excerpt: Using simplified notation and revealing unifying concepts, this book covers flow shop systems including two-machine, flexible and stochastic, and examines the reentrant flow shop, in which a job may be reprocessed at the same station or sequence of stations.

Download or read book Classification and Review of FMS Scheduling Procedures written by Kathryn E. Stecke and published by . This book was released on 1993 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A note on flexible flowshop scheduling with two stages written by J. Blazewicz and published by . This book was released on 1994 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Two stage Flexible Flow Shop Scheduling with Blocking Constraint and Batching Machines written by Hadi Panahi and published by . This book was released on 2014 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this dissertation, a two stage flexible flow shop scheduling problem is studied, where in stage 1, there are identical batch processors (burnout ovens) and in stage 2, there are identical discrete processors (furnaces). Batch processors perform a pre-heating process on a batch of jobs at a time and discrete processors perform a casting process on only one job at a time. It is assumed there is no intermediate buffer allowed between stages 1 and 2 and there is a blocking constraint between stages one and two. A batch of jobs is loaded into the batch processors based on predefined patterns. Batch processors have capacity limit and only a limited number of jobs can be loaded into the batch processors. This number is determined by the burnout oven size, jobs size and shape, and also by the layout by which they are loaded into the batch processor. It is assumed that the processing times of the batch processors are fixed and independent of the number of jobs loaded. In stage 2, jobs may require a setup time before loading. This setup depends on the job processed last and the job that is going to be processed next. In stage 2 in order to pour the molten metal, pots are used. Larger jobs require larger pots due to higher molten metal volume. Also jobs may have different alloy types and sometimes the pot that is currently being used must be washed before using it for the next job due to the difference between the alloy types of two consecutive jobs. Furthermore, each pot can be used for a predefined number of pot pourings and when it reaches this predefined maximum, it has to be replaced by a new pot. It is assumed that there are different orders of jobs from customers and each customers order is associated with a due date. In this problem, several goals have to be attained while producing high quality products that conform to the established production plan. An ideal production plan reduces the blocking times on the batch processors, reduces the number of pot changes and improves the pot efficiency, reduces the maximum weighted completion time of all jobs and at the same time satisfies customers' due dates. In order to attain all these goals in one production plan, the maximum weighted completion time of all jobs are minimized. The weights are defined based on customers' due dates. In order to solve this problem and obtain optimal solutions, several mixed-integer programming mathematical models are developed and are solved using CPLEX and GUROBI. In small-size problems, it is possible to find an optimal solution, but as the size of the problem increases, these commercial solvers are not capable of finding an optimal solution by proving optimality of the feasible solution they find. In large-size problems, these solvers are not even capable of finding a feasible solution. This problem is inspired by a real industry problem and in order to solve this problem on an industrial scale, optimal approaches cannot be employed due to their inefficiency in solving large-size problems. In order to solve these problems and obtain at least high quality near-optimal solutions, three different search algorithms, namely TS, LTM_MAX and LTM_MIN, all based on Tabu search are designed and implemented. The quality of the solutions obtained by the search algorithms has to be evaluated against a valid measure. While mathematical modeling is a good tool to obtain such valid measures (optimal solutions), they are not reliable in solving large-size problems and therefore in this research they are used to evaluate the performance of the search algorithms in small-size problems. For large-size problems, a different methodology, based on the identification of valid lower bounds, is used to investigate the performance of the search algorithms. Two lower bounding mechanisms are used for generating lower bounds. These lower bounds are compared against the solutions found by the search algorithms. The first methodology developed in this research is the iterative selective linear relaxation. This methodology starts from solving the problem with some of the variables relaxed, and allows for relaxing another set of selected variables in subsequent iterations. The second methodology developed in this research is based on branch-and-price (B & P) algorithm. B & P can be viewed as an extension of branch-and-bound, wherein a column generation algorithm is developed and implemented to solve each node of the branch-and bound tree, thus enabling the identification of higher quality lower bounds efficiently for the original problem. A comprehensive set of experiments are performed to evaluate the efficiency and efficacy of the search algorithms. In pursuance of such experiments, numerous test problems that are representative of the real problem have been generated. There are several important factors such as structure of the problem, ratio of processing times to setup times, and types of setup times that are considered in generating test problems. Since some of these factors are known to be "hard to change", a split-plot design is used to perform the design of experiments in this research. The experiments reveal that LTM_MIN outperforms the other two algorithms in terms of the solution quality. On average TS and LTM_MAX deviate from LTM_MIN by 6.51% and 3.44%, respectively, in small and large-size problems. The average gap of LTM_MIN from the optimal solution in small-size problems is 2.81%, which is very promising. Average gap of LTM_MIN from the best lower bound available and B & P are 31.10% and 39.24%, respectively. In large-size problems the average gap of lower bound obtained by B & P from that by B & B is -14.07%, confirming that B & P outperforms B & B in large-size problems. Finally, in large-size problems, the average gap among best of all three algorithms against the best available lower bound is 14.2%.

Download or read book Scheduling in a Two stage Hybrid Flow Shop with Finite Intermediate Storage written by Steig Hallquist and published by . This book was released on 1992 with total page 216 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Scheduling Heuristic for a Two stage Flow Shop with Machine Dominance written by Theresa Jeanne Geck and published by . This book was released on 1998 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Modeling and Simulation of Discrete Event Systems written by Byoung Kyu Choi and published by John Wiley & Sons. This book was released on 2013-08-07 with total page 342 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computer modeling and simulation (M&S) allows engineers to study and analyze complex systems. Discrete-event system (DES)-M&S is used in modern management, industrial engineering, computer science, and the military. As computer speeds and memory capacity increase, so DES-M&S tools become more powerful and more widely used in solving real-life problems. Based on over 20 years of evolution within a classroom environment, as well as on decades-long experience in developing simulation-based solutions for high-tech industries, Modeling and Simulation of Discrete-Event Systems is the only book on DES-M&S in which all the major DES modeling formalisms – activity-based, process-oriented, state-based, and event-based – are covered in a unified manner: A well-defined procedure for building a formal model in the form of event graph, ACD, or state graph Diverse types of modeling templates and examples that can be used as building blocks for a complex, real-life model A systematic, easy-to-follow procedure combined with sample C# codes for developing simulators in various modeling formalisms Simple tutorials as well as sample model files for using popular off-the-shelf simulators such as SIGMA®, ACE®, and Arena® Up-to-date research results as well as research issues and directions in DES-M&S Modeling and Simulation of Discrete-Event Systems is an ideal textbook for undergraduate and graduate students of simulation/industrial engineering and computer science, as well as for simulation practitioners and researchers.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1994 with total page 564 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Artificial Intelligence Applications and Innovations written by Ilias Maglogiannis and published by . This book was released on 2021 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book constitutes the refereed proceedings of the 17th IFIP WG 12.5 International Conference on Artificial Intelligence Applications and Innovations, AIAI 2021, held virtually and in Hersonissos, Crete, Greece, in June 2021. The 50 full papers and 11 short papers presented were carefully reviewed and selected from 113 submissions. They cover a broad range of topics related to technical, legal, and ethical aspects of artificial intelligence systems and their applications and are organized in the following sections: adaptive modeling/ neuroscience; AI in biomedical applications; AI impacts/ big data; automated machine learning; autonomous agents; clustering; convolutional NN; data mining/ word counts; deep learning; fuzzy modeling; hyperdimensional computing; Internet of Things/ Internet of energy; machine learning; multi-agent systems; natural language; recommendation systems; sentiment analysis; and smart blockchain applications/ cybersecurity. Chapter "Improving the Flexibility of Production Scheduling in Flat Steel Production Through Standard and AI-based Approaches: Challenges and Perspective" is available open access under a Creative Commons Attribution 4.0 International License via link.springer.com.

Download or read book Handbook of Heuristics written by Rafael Martí and published by Springer. This book was released on 2017-01-16 with total page 3000 pages. Available in PDF, EPUB and Kindle. Book excerpt: Heuristics are strategies using readily accessible, loosely applicable information to control problem solving. Algorithms, for example, are a type of heuristic. By contrast, Metaheuristics are methods used to design Heuristics and may coordinate the usage of several Heuristics toward the formulation of a single method. GRASP (Greedy Randomized Adaptive Search Procedures) is an example of a Metaheuristic. To the layman, heuristics may be thought of as ‘rules of thumb’ but despite its imprecision, heuristics is a very rich field that refers to experience-based techniques for problem-solving, learning, and discovery. Any given solution/heuristic is not guaranteed to be optimal but heuristic methodologies are used to speed up the process of finding satisfactory solutions where optimal solutions are impractical. The introduction to this Handbook provides an overview of the history of Heuristics along with main issues regarding the methodologies covered. This is followed by Chapters containing various examples of local searches, search strategies and Metaheuristics, leading to an analyses of Heuristics and search algorithms. The reference concludes with numerous illustrations of the highly applicable nature and implementation of Heuristics in our daily life. Each chapter of this work includes an abstract/introduction with a short description of the methodology. Key words are also necessary as part of top-matter to each chapter to enable maximum search engine optimization. Next, chapters will include discussion of the adaptation of this methodology to solve a difficult optimization problem, and experiments on a set of representative problems.

Download or read book The Engineering Index Annual written by and published by . This book was released on 1992 with total page 2264 pages. Available in PDF, EPUB and Kindle. Book excerpt: Since its creation in 1884, Engineering Index has covered virtually every major engineering innovation from around the world. It serves as the historical record of virtually every major engineering innovation of the 20th century. Recent content is a vital resource for current awareness, new production information, technological forecasting and competitive intelligence. The world?s most comprehensive interdisciplinary engineering database, Engineering Index contains over 10.7 million records. Each year, over 500,000 new abstracts are added from over 5,000 scholarly journals, trade magazines, and conference proceedings. Coverage spans over 175 engineering disciplines from over 80 countries. Updated weekly.

Download or read book Gravel Roads written by Ken Skorseth and published by . This book was released on 2000 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of this manual is to provide clear and helpful information for maintaining gravel roads. Very little technical help is available to small agencies that are responsible for managing these roads. Gravel road maintenance has traditionally been "more of an art than a science" and very few formal standards exist. This manual contains guidelines to help answer the questions that arise concerning gravel road maintenance such as: What is enough surface crown? What is too much? What causes corrugation? The information is as nontechnical as possible without sacrificing clear guidelines and instructions on how to do the job right.

Download or read book American Doctoral Dissertations written by and published by . This book was released on 1994 with total page 800 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book CAD CAM Abstracts written by and published by . This book was released on 1990 with total page 1128 pages. Available in PDF, EPUB and Kindle. Book excerpt: