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Author: Mekentichi Abdesselam Publisher: ISBN: Category : Languages : en Pages : 284
Book Description
As an archetype of the production systems, the flow-shops are featured by their highly dynamic behaviour caused by random disruptions such as machine breakdown, frequent arrivals of new order, tool breakdown, etc. In such cases, the companies need to react in an optimal way, thus the disruptions are discarded or managed and the economic criteria are maintained or even improved. In this context, reactive scheduling can justifiably be considered as a decision support tool that helps the operational managers to mitigate the adverse effects of disruptions occurring during the execution of initial schedule. Among these disruptions, the random arrival of new orders is the most frequently occurring phenomenon in the production shop floor. This random order arrival causes the non-optimality and/or infeasibility in schedule, which reduces resource utilization, increases work in progress (WIP) inventories and subsequently lowers the profit. Hence to aid the manufacturers, in this study a reactive flow-shop scheduling problem subject to the arrival of new order is addressed comprehensively, analysed critically and solved optimally. Though a number of researchers have already proposed the reactive scheduling models, most of them are complex and even difficult to execute within the acceptable time horizon. Therefore in this research, based on a widely adopted and renowned Wagner formulation, a Mixed Integer Non Linear reactive scheduling model is proposed. To ease the implementation, a predictive scheduling model is also developed together with the reactive one. The proposed models are implemented in flow shop of a local automotive industry and assessed by using four performance measures namely the makespan, mean idle time, mean waiting time and resource utilization. For both models the makespan is taken as the main objective function, while constraints such as capacity of the machines, completion time of the jobs and precedence relationships are formulated. The entire model is designed in a spreadsheet and solved by 'What's Best' optimizer. The output obtained by comparing with the current practices demonstrates that the proposed approach has supremacy in reducing the makespan by 26.92% through predictive and 24.07% through the reactive scheduling. Additionally, a considerable reduction in the waiting time (72.22 % and 30 %) is attained through the implementation of the proposed approaches. Meanwhile, the utilization of the resources is also enhanced by 36.84 % through predictive and 61.9 % through reactive schedule thus yielding better productivity of the shop floor. It is expected that the implementation of the proposed approach would help improve the decision making procedure in automotive as well as other manufacturing industries.
Author: Mekentichi Abdesselam Publisher: ISBN: Category : Languages : en Pages : 284
Book Description
As an archetype of the production systems, the flow-shops are featured by their highly dynamic behaviour caused by random disruptions such as machine breakdown, frequent arrivals of new order, tool breakdown, etc. In such cases, the companies need to react in an optimal way, thus the disruptions are discarded or managed and the economic criteria are maintained or even improved. In this context, reactive scheduling can justifiably be considered as a decision support tool that helps the operational managers to mitigate the adverse effects of disruptions occurring during the execution of initial schedule. Among these disruptions, the random arrival of new orders is the most frequently occurring phenomenon in the production shop floor. This random order arrival causes the non-optimality and/or infeasibility in schedule, which reduces resource utilization, increases work in progress (WIP) inventories and subsequently lowers the profit. Hence to aid the manufacturers, in this study a reactive flow-shop scheduling problem subject to the arrival of new order is addressed comprehensively, analysed critically and solved optimally. Though a number of researchers have already proposed the reactive scheduling models, most of them are complex and even difficult to execute within the acceptable time horizon. Therefore in this research, based on a widely adopted and renowned Wagner formulation, a Mixed Integer Non Linear reactive scheduling model is proposed. To ease the implementation, a predictive scheduling model is also developed together with the reactive one. The proposed models are implemented in flow shop of a local automotive industry and assessed by using four performance measures namely the makespan, mean idle time, mean waiting time and resource utilization. For both models the makespan is taken as the main objective function, while constraints such as capacity of the machines, completion time of the jobs and precedence relationships are formulated. The entire model is designed in a spreadsheet and solved by 'What's Best' optimizer. The output obtained by comparing with the current practices demonstrates that the proposed approach has supremacy in reducing the makespan by 26.92% through predictive and 24.07% through the reactive scheduling. Additionally, a considerable reduction in the waiting time (72.22 % and 30 %) is attained through the implementation of the proposed approaches. Meanwhile, the utilization of the resources is also enhanced by 36.84 % through predictive and 61.9 % through reactive schedule thus yielding better productivity of the shop floor. It is expected that the implementation of the proposed approach would help improve the decision making procedure in automotive as well as other manufacturing industries.
Author: Hamilton Emmons Publisher: Springer ISBN: 9781461451532 Category : Business & Economics Languages : en Pages : 334
Book Description
Although several monographs and edited volumes have discussed scheduling in general, most of these works survey the field by contributing a single chapter to production systems like flow shops. Flow Shop Scheduling: Theoretical Results, Algorithms, and Applications is solely dedicated to bringing together a huge body of knowledge on the subject, along distinct design features, in order to help scholars and practitioners easily identify problems of interest. This monograph has been organized into ten distinct flow shop systems and explores their connections. The chapters cover flow shop systems including two-machine, flexible, stochastic, and more. Outside of the traditional flow shops that require a job never revisits any stage, this book also examines the reentrant flow shop, in which a job may cycle back and be reprocessed at the same station or sequence of stations, multiple times. The authors have made the material accessible to a broad readership, using simplified notation and revealing unifying concepts. The results unique to flow shop research should provide the seed for research in other areas of scheduling and in optimization in general.
Author: Henry Mintzberg Publisher: ISBN: Category : Languages : en Pages : 0
Book Description
Synthesizes the empirical literature on organizationalstructuring to answer the question of how organizations structure themselves --how they resolve needed coordination and division of labor. Organizationalstructuring is defined as the sum total of the ways in which an organizationdivides and coordinates its labor into distinct tasks. Further analysis of theresearch literature is neededin order to builda conceptualframework that will fill in the significant gap left by not connecting adescription of structure to its context: how an organization actuallyfunctions. The results of the synthesis are five basic configurations (the SimpleStructure, the Machine Bureaucracy, the Professional Bureaucracy, theDivisionalized Form, and the Adhocracy) that serve as the fundamental elementsof structure in an organization. Five basic parts of the contemporaryorganization (the operating core, the strategic apex, the middle line, thetechnostructure, and the support staff), and five theories of how it functions(i.e., as a system characterized by formal authority, regulated flows, informalcommunication, work constellations, and ad hoc decision processes) aretheorized. Organizations function in complex and varying ways, due to differing flows -including flows of authority, work material, information, and decisionprocesses. These flows depend on the age, size, and environment of theorganization; additionally, technology plays a key role because of itsimportance in structuring the operating core. Finally, design parameters aredescribed - based on the above five basic parts and five theories - that areused as a means of coordination and division of labor in designingorganizational structures, in order to establish stable patterns of behavior.(CJC).
Author: Roberta S. Russell Publisher: ISBN: 9780470233795 Category : Business logistics Languages : en Pages : 776
Book Description
Featuring an ideal balance of managerial issues and quantitative techniques, this introduction to operations management keeps pace with current innovations and issues in the field. It presents the concepts clearly and logically, showing readers how OM relates to real business. The new edition also integrates the experiences of a real company throughout each chapter to clearly illustrate the concepts. Readers will find brief discussions on how the company manages areas such as inventory and forecasting to provide a real-world perspective.
Author: Ruby Parker Puckett Publisher: John Wiley & Sons ISBN: 1118234111 Category : Medical Languages : en Pages : 592
Book Description
The thoroughly revised and updated fourth edition of Foodservice Manual for Health Care Institutions offers a review of the management and operation of health care foodservice departments. This edition of the book which has become the standard in the field of institutional and health care foodservice contains the most current data on the successful management of daily operations and includes information on a wide range of topics such as leadership, quality control, human resource management, product selection and purchasing, environmental issues, and financial management. This new edition also contains information on the practical operation of the foodservice department that has been greatly expanded and updated to help institutions better meet the needs of the customer and comply with the regulatory agencies' standards. TOPICS COVERED INCLUDE: Leadership and Management Skills Marketing and Revenue-Generating Services Quality Management and Improvement Planning and Decision Making Organization and Time Management Team Building Effective Communication Human Resource Management Management Information Systems Financial Management Environmental Issues and Sustainability Microbial, Chemical, and Physical Hazards HACCP, Food Regulations, Environmental Sanitation, and Pest Control Safety, Security, and Emergency Preparedness Menu Planning Product Selection Purchasing Receiving, Storage, and Inventory Control Food Production Food Distribution and Service Facility Design Equipment Selection and Maintenance Learning objectives, summary, key terms, and discussion questions included in each chapter help reinforce important topics and concepts. Forms, charts, checklists, formulas, policies, techniques, and references provide invaluable resources for operating in the ever-changing and challenging environment of the food- service industry.
Author: Gavin Towler Publisher: Elsevier ISBN: 0080966608 Category : Technology & Engineering Languages : en Pages : 1321
Book Description
Chemical Engineering Design, Second Edition, deals with the application of chemical engineering principles to the design of chemical processes and equipment. Revised throughout, this edition has been specifically developed for the U.S. market. It provides the latest US codes and standards, including API, ASME and ISA design codes and ANSI standards. It contains new discussions of conceptual plant design, flowsheet development, and revamp design; extended coverage of capital cost estimation, process costing, and economics; and new chapters on equipment selection, reactor design, and solids handling processes. A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data, and Excel spreadsheet calculations, plus over 150 Patent References for downloading from the companion website. Extensive instructor resources, including 1170 lecture slides and a fully worked solutions manual are available to adopting instructors. This text is designed for chemical and biochemical engineering students (senior undergraduate year, plus appropriate for capstone design courses where taken, plus graduates) and lecturers/tutors, and professionals in industry (chemical process, biochemical, pharmaceutical, petrochemical sectors). New to this edition: - Revised organization into Part I: Process Design, and Part II: Plant Design. The broad themes of Part I are flowsheet development, economic analysis, safety and environmental impact and optimization. Part II contains chapters on equipment design and selection that can be used as supplements to a lecture course or as essential references for students or practicing engineers working on design projects. - New discussion of conceptual plant design, flowsheet development and revamp design - Significantly increased coverage of capital cost estimation, process costing and economics - New chapters on equipment selection, reactor design and solids handling processes - New sections on fermentation, adsorption, membrane separations, ion exchange and chromatography - Increased coverage of batch processing, food, pharmaceutical and biological processes - All equipment chapters in Part II revised and updated with current information - Updated throughout for latest US codes and standards, including API, ASME and ISA design codes and ANSI standards - Additional worked examples and homework problems - The most complete and up to date coverage of equipment selection - 108 realistic commercial design projects from diverse industries - A rigorous pedagogy assists learning, with detailed worked examples, end of chapter exercises, plus supporting data and Excel spreadsheet calculations plus over 150 Patent References, for downloading from the companion website - Extensive instructor resources: 1170 lecture slides plus fully worked solutions manual available to adopting instructors
Author: U.S. Department of Health and Human Services Publisher: Lulu.com ISBN: 1794755136 Category : Reference Languages : en Pages : 208
Book Description
Motivation is key to substance use behavior change. Counselors can support clients' movement toward positive changes in their substance use by identifying and enhancing motivation that already exists. Motivational approaches are based on the principles of person-centered counseling. Counselors' use of empathy, not authority and power, is key to enhancing clients' motivation to change. Clients are experts in their own recovery from SUDs. Counselors should engage them in collaborative partnerships. Ambivalence about change is normal. Resistance to change is an expression of ambivalence about change, not a client trait or characteristic. Confrontational approaches increase client resistance and discord in the counseling relationship. Motivational approaches explore ambivalence in a nonjudgmental and compassionate way.
Author: S. Anil Kumar Publisher: New Age International ISBN: 8122418279 Category : Materials management Languages : en Pages : 19
Book Description
This Book Presents Lucid Treatment Of A Wide Range Of Issues Involved In Production And Operations Management. It Focuses On The Latest Techniques In Production Planning And Control Considered To Be Pivotal For Organizations, Which Aim At Maximizing Their Productivity And Profitability.The Book Further Discusses In Detail The Production System Concept, Facility Location, Plant Layout Design, Production Scheduling, Mass Production Techniques Such As Assembly Line Balancing Maintenance Planning And Control, Scheduling, Quality Control; And Modern Production Management Tools That Include Cim, Tqm And Iso 9000 Series.Primarily Designed As A Textbook For Various Courses Like Bbm, Bba, B.Com., Mba And Also Useful For Students Pursuing Courses, Production And Operations Management, Mechanical, Industrial And Production Engineering Of Bangalore And Other Indian Universities.Salient Features: * Book Is Written In Simple And Lucid Style * Contents Are Presented In A Most Meticulous Manner * Charts Are Provided For Easy Understanding Of The Concepts * Exercises Are Designed For Self-Evaluation And Include Objective Type, Analytical Type And Application Type Questions * Contains Examination Question Bank * Contains Exhaustive Glossary Of Terminologies * Focuses On Materials Management Concepts And Techniques * Focuses On Plant Location And Layout Concepts * Focuses On Statistical Quality Control Concepts And Technique * Focuses On Industrial Engineering Concepts Such As Time Motion Study, Maintenance Management, Waste Management & Automation
Author: Mekentichi Abdesselam
Author: Mekentichi Abdesselam
Author: Hamilton Emmons
Author: Henry Mintzberg
Author: Chapman
Author: Roberta S. Russell
Author: Ruby Parker Puckett
Author: Gavin Towler
Author: U.S. Department of Health and Human Services
Author: S. Anil Kumar
Author: