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Assembly Line Balancing Under Uncertain Task Time And Demand Volatility
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Book Synopsis Assembly Line Balancing under Uncertain Task Time and Demand Volatility by : Yuchen Li
Download or read book Assembly Line Balancing under Uncertain Task Time and Demand Volatility written by Yuchen Li and published by Springer Nature. This book was released on 2022-09-10 with total page 164 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book introduces several mathematical models in assembly line balancing based on stochastic programming and develops exact and heuristic methods to solve them. An assembly line system is a manufacturing process in which parts are added in sequence from workstation to workstation until the final assembly is produced. In an assembly line balancing problem, tasks belonging to different product models are allocated to workstations according to their processing times and precedence relationships among tasks. It incorporates two features, uncertain task times, and demand volatility, separately and simultaneously, into the conventional assembly line balancing model. A real-life case study related to the mask production during the COVID-19 pandemic is presented to illustrate the application of the proposed framework and methodology. The book is intended for graduate students who are interested in combinatorial optimizations in manufacturing with uncertain input.
Book Synopsis Assembly-Line Balancing under Demand Uncertainty by : Celso Gustavo Stall Sikora
Download or read book Assembly-Line Balancing under Demand Uncertainty written by Celso Gustavo Stall Sikora and published by Springer Nature. This book was released on 2022-01-11 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assembly lines are productive systems, which are very efficient for homogeneous products. In the automotive industry, an assembly line is used in the production of several vehicle variants, including numerous configurations, options, and add-ins. As a result, assembly lines must be at the same time specialized to provide high efficiency, but also flexible to allow the mass customization of the vehicles. In this book, the planning of assembly lines for uncertain demand is tackled and optimization algorithms are offered for the balancing of such lines. Building an assembly line is a commitment of several months or even years, it is understandable that the demand will fluctuate during the lifetime of an assembly line. New products are developed, others are removed from the market, and the decision of the final customer plays a role on the immediate demand. Therefore, the variation and uncertainty of the demand must be accounted for in an assembly line. In this book, methods dealing with random demand or random production sequence are presented, so that the practitioners can plan more robust and efficient production systems.
Book Synopsis Advances in Production Management Systems. Production Management Systems for Volatile, Uncertain, Complex, and Ambiguous Environments by : Matthias Thürer
Download or read book Advances in Production Management Systems. Production Management Systems for Volatile, Uncertain, Complex, and Ambiguous Environments written by Matthias Thürer and published by Springer Nature. This book was released on with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Assembly Line Rebalancing with Non-constant Task Time Attribute by : Yuchen Li
Download or read book Assembly Line Rebalancing with Non-constant Task Time Attribute written by Yuchen Li and published by . This book was released on 2016 with total page 193 pages. Available in PDF, EPUB and Kindle. Book excerpt: Assembly line has been widely used in producing complex items, such as automobiles and other transportation equipment, household appliances and electronic goods. Assembly line balancing is to maximize the efficiency of the assembly line so that the optimal production rate or optimal length of the line is obtained. Since the 1950s there has been a plethora of research studies focusing on the methodologies for assembly line balancing. Methods and algorithms were developed to balance an assembly line, which is operated by human workers, in a fast and efficient fashion. However, more and more assembly lines are incorporating automation in the design of the line, and in that case the line balancing problem structure is altered. For these automated assembly lines, novel algorithms are provided in this dissertation to efficiently solve the automated line balancing problem when the assembly line includes learning automata. Recent studies show that the task time can be improved during production due to machine learning, which gives the opportunities to rebalance the assembly line as the improvements occur and are observed. The concept of assembly line rebalancing or task reassignment are crucial for the assembly which is designed for small volume production because of the demand variation and rapid innovation of new product. In this dissertation, two forms of rebalancing are provided, forward planning and real time adjustment. The first one is to develop a planning schedule before production begins given the task time improvement is deterministic. The second one is to rebalance the line after the improvements are realized given the task time improvement is random. Algorithms address one sided and two sided assembly lines are proposed. Computation experiments are performed in order to test the performance of the novel algorithms and empirically validate the merit of improvement of production statistics.
Book Synopsis Risk Oriented Stochastic Assembly Line Balancing by : Prakhash Udayakumar
Download or read book Risk Oriented Stochastic Assembly Line Balancing written by Prakhash Udayakumar and published by . This book was released on 2010 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: In a single model manual assembly line, product flows through series of workstations arranged in a sequential manner. Each workstation has a finite number of tasks and each task has probabilistic processing time. Due to the probabilistic nature of task time, the task times can exceed the expected standard task time at some instance. If a series of tasks exceeds in a particular station, then there is a risk that the product may exceed the cycle time. As a result, a small variability in task time can lead to large delays in the delivery lead time of the product. Most of the line balancing approaches assume deterministic task times thereby ignoring the impact of task time variability on the system performance measures. The larger the variability of task time, the higher the risk associated with the station. In this paper, the impact of variability in task time is quantified in terms of risk. Risk is defined as potential loss caused when the product fails to complete within the specified station time. For line balancing, in addition to cycle time balancing, the risk should be balanced in order to improve the performance of the assembly line. In this research, a risk based assembly line balancing technique for highly variable task times is presented. The results from the case study show that the method increases the performance of the assembly line while balancing the risk of delays at each station.
Book Synopsis Assembly Line Balancing by : Motokazu Orihata
Download or read book Assembly Line Balancing written by Motokazu Orihata and published by . This book was released on 1968 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Minimizing Costs in Assembly Line Balancing with Stochastic Task Times and Off-line Repairs by : Fred N. Silverman
Download or read book Minimizing Costs in Assembly Line Balancing with Stochastic Task Times and Off-line Repairs written by Fred N. Silverman and published by . This book was released on 1983 with total page 23 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Balancing and Sequencing of Assembly Lines by : Armin Scholl
Download or read book Balancing and Sequencing of Assembly Lines written by Armin Scholl and published by Physica. This book was released on 1999-02-26 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book deals with two main decision problems which arise when flow-line production systems are installed and operated. The assembly line balancing problem consists of partitioning the work, necessary to assemble the product(s), among different stations of an assembly line. If several models of a product are jointly processed on a line, this medium-term problem is connected with the short-term problem of determining an operating sequence of the models. In Part I balancing and sequencing problems are discussed, classified, and arranged within a hierarchical planning system. In the present second edition special emphasis is given to u-shaped assembly lines which are important components of modern just-in-time production systems. Part II is concerned with exact and heuristic procedures for solving those decision problems. For each problem type considered, a survey of existing procedures is given and new efficient solution methods are developed. Comprehensive numerical investigations showing the effectiveness of the new methods and their superiority over existing approaches are reported.
Book Synopsis Single and Mixed-model Assembly Line Balancing Methods for Both Deterministic and Normally Distributed Work Element Times by : Dodla Nageswara Rao
Download or read book Single and Mixed-model Assembly Line Balancing Methods for Both Deterministic and Normally Distributed Work Element Times written by Dodla Nageswara Rao and published by . This book was released on 1971 with total page 462 pages. Available in PDF, EPUB and Kindle. Book excerpt: Line balancing is concerned with the optimal assignment of work elements to individual operators in an assembly tine of a mass producing system. This paper summarizes the assembly line balancing terminology, the computational methods, and objective functions applicable to a wide variety of assembly lines. Single and mixed-model situations for both constant and variable work element times are examined. A Back Tracking Method of Assembly Line Balancing (BALB) is developed and programmed in FORTRAN IV. BALB, as a manual procedure was able to find an optimal solution to problems that other existing methods such as Helgeson and Birnie's positional weight technique, could not yield. In general, BALB was also found to be simple and more efficient than the heuristic methods by Tonge, Hoffman, Mansoor and Arcus. The computer program, *BALB, accepts data for both single and mixed-model ALB problems and considers both constant and variable work element times. This program uses production shift time as the criterion for balancing the mixed-model lines. Numerical examples are used throughout the paper to illustrate the steps of various methods.
Book Synopsis Operations Management by : David Bennett
Download or read book Operations Management written by David Bennett and published by . This book was released on 2006 with total page 384 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book 1980 Agricultural Outlook written by and published by . This book was released on 1979 with total page 622 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry Publisher : ISBN 13 : Total Pages :1624 pages Book Rating :4.:/5 (35 download)
Book Synopsis Hearings, Reports and Prints of the Senate Committee on Agriculture, Nutrition, and Forestry by : United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry
Download or read book Hearings, Reports and Prints of the Senate Committee on Agriculture, Nutrition, and Forestry written by United States. Congress. Senate. Committee on Agriculture, Nutrition, and Forestry and published by . This book was released on 1980 with total page 1624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Conference Papers Index written by and published by . This book was released on 1979 with total page 582 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monthly. Papers presented at recent meeting held all over the world by scientific, technical, engineering and medical groups. Sources are meeting programs and abstract publications, as well as questionnaires. Arranged under 17 subject sections, 7 of direct interest to the life scientist. Full programs of meetings listed under sections. Entry gives citation number, paper title, name, mailing address, and any ordering number assigned. Quarterly and annual indexes to subjects, authors, and programs (not available in monthly issues).
Book Synopsis Energy Efficiency in Manufacturing Systems by : Sebastian Thiede
Download or read book Energy Efficiency in Manufacturing Systems written by Sebastian Thiede and published by Springer Science & Business Media. This book was released on 2012-04-23 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: Energy consumption is of great interest to manufacturing companies. Beyond considering individual processes and machines, the perspective on process chains and factories as a whole holds major potentials for energy efficiency improvements. To exploit these potentials, dynamic interactions of different processes as well as auxiliary equipment (e.g. compressed air generation) need to be taken into account. In addition, planning and controlling manufacturing systems require balancing technical, economic and environmental objectives. Therefore, an innovative and comprehensive methodology – with a generic energy flow-oriented manufacturing simulation environment as a core element – is developed and embedded into a step-by-step application cycle. The concept is applied in its entirety to a wide range of case studies such as aluminium die casting, weaving mills, and printed circuit board assembly in order to demonstrate the broad applicability and the benefits that can be achieved.
Book Synopsis EBOOK: Operations and Supply Chain Management, Global edition by : F. Robert Jacobs
Download or read book EBOOK: Operations and Supply Chain Management, Global edition written by F. Robert Jacobs and published by McGraw Hill. This book was released on 2013-06-16 with total page 797 pages. Available in PDF, EPUB and Kindle. Book excerpt: Resourceful companies today must successfully manage the entire supply flow, from the sources of the firm, through the value-added processes of the firm, and on to the customers of the firm. The fourteenth Global Edition of Operations and Supply Chain Management provides well-balanced coverage of managing people and applying sophisticated technology to operations and supply chain management.
Book Synopsis Rwanda by : International Monetary Fund. African Dept.
Download or read book Rwanda written by International Monetary Fund. African Dept. and published by International Monetary Fund. This book was released on 2022-12-19 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Supported by a large policy package, Rwanda’s economy rebounded in 2021 after contracting in the preceding year due to the COVID-19 shock. However, the country now faces multi-faceted challenges—pandemic scars, headwinds from the war in Ukraine, and climate-related shocks, meanwhile inflationary pressures have increased markedly. Downside risks are significant from the war spillovers, through further pressures on energy, food, and fertilizer prices, global financial tightening, and slowdown in major trading partners, in addition to climate-related shocks. Against this backdrop, the authorities have requested a new Policy Coordination Instrument (PCI) and an arrangement under the Resilience and Sustainability Facility (RSF) to support their efforts in maintaining macroeconomic stability, advancing their reform agenda, including on climate to enhance Rwanda’s resilience to climate-related shocks, and insuring against downside risks. They will cancel the current PCI (expiring in June 2023) upon approval of the new PCI.
Book Synopsis Decision Making Under Uncertainty by : Mykel J. Kochenderfer
Download or read book Decision Making Under Uncertainty written by Mykel J. Kochenderfer and published by MIT Press. This book was released on 2015-07-24 with total page 350 pages. Available in PDF, EPUB and Kindle. Book excerpt: An introduction to decision making under uncertainty from a computational perspective, covering both theory and applications ranging from speech recognition to airborne collision avoidance. Many important problems involve decision making under uncertainty—that is, choosing actions based on often imperfect observations, with unknown outcomes. Designers of automated decision support systems must take into account the various sources of uncertainty while balancing the multiple objectives of the system. This book provides an introduction to the challenges of decision making under uncertainty from a computational perspective. It presents both the theory behind decision making models and algorithms and a collection of example applications that range from speech recognition to aircraft collision avoidance. Focusing on two methods for designing decision agents, planning and reinforcement learning, the book covers probabilistic models, introducing Bayesian networks as a graphical model that captures probabilistic relationships between variables; utility theory as a framework for understanding optimal decision making under uncertainty; Markov decision processes as a method for modeling sequential problems; model uncertainty; state uncertainty; and cooperative decision making involving multiple interacting agents. A series of applications shows how the theoretical concepts can be applied to systems for attribute-based person search, speech applications, collision avoidance, and unmanned aircraft persistent surveillance. Decision Making Under Uncertainty unifies research from different communities using consistent notation, and is accessible to students and researchers across engineering disciplines who have some prior exposure to probability theory and calculus. It can be used as a text for advanced undergraduate and graduate students in fields including computer science, aerospace and electrical engineering, and management science. It will also be a valuable professional reference for researchers in a variety of disciplines.
