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Author: Christian Alexander Ullrich
Publisher: Springer Science & Business Media
ISBN: 3658037695
Category : Business & Economics
Languages : en
Pages : 202
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Book Description
Christian A. Ullrich investigates the optimization potential of integrated supply chain scheduling approaches. Considering a company-internal supply chain, the author ́s first research question is whether the results of integrating machine scheduling and vehicle routing are significantly better than those of classic decomposition approaches which break down the overall problem and solve the subproblems successively. The scope is then broadened to include the machine and transportation scheduling problems of two and more companies at consecutive supply chain stages. The last part of this dissertation addresses supply chain contracting issues.
Author: Christian Alexander Ullrich
Publisher: Springer Science & Business Media
ISBN: 3658037695
Category : Business & Economics
Languages : en
Pages : 202
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Book Description
Christian A. Ullrich investigates the optimization potential of integrated supply chain scheduling approaches. Considering a company-internal supply chain, the author ́s first research question is whether the results of integrating machine scheduling and vehicle routing are significantly better than those of classic decomposition approaches which break down the overall problem and solve the subproblems successively. The scope is then broadened to include the machine and transportation scheduling problems of two and more companies at consecutive supply chain stages. The last part of this dissertation addresses supply chain contracting issues.
Author: Shi Chen
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Project supply chains are complex systems of organizations, information, and processes that aim at delivering specific resources required by respective project tasks at scheduled times so that the project can be carried out smoothly and delivered within the target time and budget. Lots of anecdotal evidence from a variety of industries, such as the construction industry and the aviation industry, suggests that supply chain issues have caused significant project delays and cost overruns, creating the need to carry out research on project supply chains. The body of literature on project-based supply chain management, however, is relatively new and lacks quantitative modeling and analysis. In this dissertation, we provide quantitative models and analysis to address the scheduling, coordination, and capacity planning problems in project supply chains facing uncertainties in time, demand, and technology. In Chapter 2, we study the optimal material release scheduling problem in project supply chains with processing time uncertainties. In contrast to the classical studies in product supply chains, where the focus is on the quantity of inventory to be stocked, this chapter focuses on the timing of releasing the materials required by each project task, which affects the profitability of the project, as late releases could delay the project while early releases could incur substantial financing costs. We characterize the optimal material release schedules. Additionally, we quantify the value of quick response and production flexibility and we show that quick response is more desirable when the processing times are more volatile, the project margin is less, and the correlation of the processing times are smaller. In Chapter 3, we study the incentive and coordination problem in decentralized project supply chains. Since most projects are unique and customized, project supply chains are usually configured with many specialized suppliers involved. Each supplier takes the responsibility of delivering the materials required by a respective task at a specific time. We examine some commonly used contracts and explain the reason why those contracts cannot provide proper incentives to the suppliers. We introduce an optimal contract that can coordinate the supply chain, which requires three critical components: target material delivery schedule, deposit and balance terms, and penalty/bonus terms. We show how to coordinate the supply chain by properly setting the target material delivery schedule and the timing of payments. In addition, we show that under certain conditions, the contract that we introduced can still coordinate the channel even if the manufacturer's estimate of the supply lead times is inaccurate. Last, we also show that the manufacturer's expected profit does not depend on the mean of the supply lead times and it is not necessarily a decreasing function of the variance of the supply lead times, suggesting that lead time reduction may not benefit the manufacturer as much as one would expect. In Chapter 4, we study the optimal capacity planning problem in data center capacity expansion projects. There are several ways to expand data center capacity. For example, one is through extending data center space capacity, and another way is through replacing the fleet of existing equipment by new equipment. Extending data center space capacity can be regarded as a unique project and can be analyzed using the models developed in the previous chapters. The study of this chapter, however, focuses on expanding data center capacity through new technology introduction. In particular, we consider a two-period problem. In the first period, there is only one type of equipment and one type of demand; while in the second period, new equipment is available and there is an additional type of demand. We study the optimal capacity plans in the two periods. Moreover, we compare three strategies: solo-technology rollover strategy, dual-technology rollover strategy, and a strategy that allows an upgrading option for the old equipment. We find that under the dual-technology rollover strategy, which is the most flexible strategy, the optimal capacity level of the old equipment is the lowest in the first period and highest at the end of the second period.
Author: Micael Thunberg
Publisher: Linköping University Electronic Press
ISBN: 9176857034
Category :
Languages : en
Pages : 100
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Book Description
Supply chain management (SCM) has been stressed as a remedy to many of the underlying issues in the construction industry. However, the positive examples where SCM has been successfully utilised and diminished the lingering issues in construction is scarce. The question is why. Previous studies have stressed the importance of planning both the construction project as such but also the supply chain and the logistics. As an important part of SCM, supply chain planning (SCP) focuses on planning different aspects of the supply chain through involving different members of the supply chain in the planning process. SCP in construction is scarce as the planning of the logistics in general. Failing to plan the supply chain, involving supply chain members in the planning, and integrating the processes of planning the supply chains and the construction project can be one reason for the low numbers of successful SCM adoption in construction. In improving the SCP in construction, this thesis develops a SCP framework for construction that involves the main contractor, subcontractors, and suppliers. The aim is to improve SCP, collaboration, and eliminate many of the common problems in construction through a SCM and SCP perspective. The developed framework is based on an existing planning framework for sales and operations planning. This framework is generic and synthesises planning in general. It consists of identifying/developing: outcomes, input, organisation, process, key performance measurements, and IT-tools. It is thus necessary to investigate what these aspects means in a construction context. Four research objects will be fulfilled: Objective 1. Identify common logistical problems and linkages between them Objective 2. Develop a SCP process Objective 3. Develop a SCP organisation Objective 4. Identify performance measurements
Author: Zhi-Long Chen
Publisher: Springer Nature
ISBN: 3030903745
Category : Business & Economics
Languages : en
Pages : 699
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Book Description
Supply chain scheduling is a relatively new research area with less than 20 years of history. It is an intersection of two traditional areas: supply chain management and scheduling. In this book, the authors provide a comprehensive coverage of supply chain scheduling. The book covers applications, solution algorithms for solving related problems, evaluation of supply chain conflicts, and models for encouraging cooperation between decision makers. Supply chain scheduling studies detailed scheduling issues within supply chains, as motivated by a variety of applications in the real world. Topics covered by the book include: Coordinated decision making in centralized supply chains, including integrated production and distribution scheduling, joint scheduling and product pricing, and coordinated subcontracting and scheduling. Coordination and competition issues in decentralized supply chains, including conflict and cooperation within scheduling decisions made by different parties in supply chains, and both cooperative and non-cooperative supply chain scheduling games. The book describes a variety of representative problems within each of these topics. The authors define these problems mathematically, describe corresponding applications, and introduce solution methods for solving each problem to improve supply chain performance.
Author: Usha Ramanathan
Publisher: Springer Science & Business Media
ISBN: 1447153529
Category : Technology & Engineering
Languages : en
Pages : 259
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Book Description
In the 21st century, supply chain operations and relationships among supply chain partners have become highly challenging, necessitating new approaches, e.g., the development of new models. Supply Chain Strategies, Issues and Models discusses supply chain issues and models with examples from actual industrial cases. Expert authors with a wide spectrum of knowledge working in various areas of supply chain management from various geographical locations offer refreshing, novel and insightful ideas and address possible solutions using established theories and models. Supply Chain Strategies, Issues and Models features studies that have used mathematical modeling, statistical analyses and also descriptive qualitative studies. The chapters cover many relevant themes related to supply chains and logistics including supply chain complexity, information sharing, quality (six sigma), electronic Kanbans, inventory models, scheduling, purchasing and contracts. To facilitate easy reading, the chapters that deal with supply chain related issues are first, followed by studies on inventory, scheduling, purchasing and logistics. This book can be used as a useful resource of supply chain management by academics, students and practitioners. This book can serve as a helping tool in managerial decision making for investments in collaboration and information exchange to improve forecasts, scheduling and inventory management, and for supply chain managers to leverage product and process complexities into competitive advantage. Some interesting mathematical models can appeal to students and researchers interested in modeling the impact of information sharing in supply chains.
Author: Zhengwei Wang
Publisher:
ISBN:
Category : Business logistics
Languages : en
Pages : 99
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Book Description
The concept of supply chain management has been evolving in construction industry steadily since mid-1990s as more and more firms experience the power of collaboration for business growth and market expansion. Unlike most manufacturing supply chains, a construction supply chain is more unique and complex due to its characteristics such as one-off project, non-repetition, and highly-customized nature. Although many researchers have devoted their efforts in construction supply chain management and construction project management, there has been a significant gap between what are being studied and what are experienced in practices. The main contribution of this study to the academic literature is its effort toward filling this gap. This dissertation includes three essays, triggered by common operational challenges encountered in the construction practices. First, we study a resource-dependent project network consisting of multiple concurrent projects that are independent in operations but are subject to the same final quality inspection upon completion. In addition, each independent project consists of a set of activities, the earliest start times of which depend on the availability of required supplies and the precedence relationships among the activities. Thus, the supplier selection and coordination among these activities need to be considered to guarantee a timely completion of each project. The problem is modeled as a mixed integer linear program (MILP), which contributes the literature as a new mathematical model that describes a common operational problem emerged in coordinating the project resource allocation, the activity schedule, and the final project review operations. Secondly, we present a formal structural analysis of the problem introduced above, and investigate the effectiveness of a mathematical programming based heuristic. The heuristic decomposes the MILP model into three sub-problems aforementioned, which can be solved independently and consecutively. The overall objective is improved by updating a weight vector in the supplier selection sub-problem, where the shadow prices of some constraints in the project activity scheduling sub-problem and project review sequencing sub-problem are utilized to guide the weight updates. Our empirical studies show that the proposed heuristic is capable of generating near-optimal solutions in a short computational time. Finally, we conduct a study on project scheduling policies under uncertainty. We focus on the uncertainty that commonly exists in the duration of completing each project activity. Two problems are investigated in this essay. First, we study the impact of a collaboration policy on final project review, under both batch mode slot assignment and sequential mode slot assignment. The benefits of collaboration compared to its non-collaboration counterpart are shown using computer simulation. Then, the resource allocation problem based on time-resource tradeoff problem with uncertain activity durations is introduced. The general problem is discussed and an algorithm for a special case is presented. Five future extensions from this research are also discussed, such as (1) constrained project scheduling with renewable and nonrenewable resources; (2) project scheduling with inspection requirement and multiple objectives; (3) supplier selection based on 3PL and 4PL in practice; (4) sustainability application; and (5) alternative decomposition schemes of the heuristics.
Author: B. Vipin
Publisher: Springer Nature
ISBN: 9811627746
Category : Business & Economics
Languages : en
Pages : 275
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Book Description
This edited book addresses the challenges in managing the operations and supply chain of organizations in the era of internet of things and Industry 4.0. It presents cutting edge research on real world operations related problems, in-depth analyses, and relevant managerial implications. Wide variety of solution approaches such as quantitative, quantitative, and simulations are presented in the context of managing the operations and supply chains. Consisting of selected papers from the XXIII Annual International Conference of Society of Operations Management, this volume is part of a two volume series with the other book consisting of chapters on quantitative decision making. This edited book covers various quantitative models on operations and supply chain management such as inventory optimization, machine learning-operations research integrated model for healthcare systems, game-theoretic analysis of review strategies in truthful information sharing, design of contracts in supply chains, supply chain optimization, inventory routing, and shop floor scheduling. In addition to the quantitative models, several innovative heuristics are proposed for different problems. This book explores qualitative models on improving the performance of small and medium enterprises and petroleum industries and a simulation model for staff allocation in the information technology industry. Finally, this book provides review articles on vaccine supply chains and behavioral operations management. The book throws light on the emerging trends in the use of analytics, optimization, and simulation tools and empirical analysis to improve the performance of operations and supply chains of organizations. It will serve as an essential resource for practitioners, students, faculty members and scholars in operations management and related areas to gain knowledge and pursue high quality research on developments in areas such as managing the resource management and the solution methodology---innovative tools employed in addressing the real world problems and the different optimization techniques.
Author: Fred Sollish
Publisher: John Wiley & Sons
ISBN: 0470130881
Category : Business & Economics
Languages : en
Pages : 483
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Book Description
The Procurement and Supply Manager's Desk Reference "Finally, a cohesive volume written for the worldwide profession of purchasing and supply chain management." —James D. Reeds, CPM, CFPIM, CIRM, CPCM, President, Institute for Supply Management-Silicon Valley "Great resource. This work is educational, informative, and certainly, most practical." —Peter Sterlacci, Director, Professional Development, San Jose State University "Complete with useful information-the authors are extraordinary experts in the field of supply chain management." —Michael Geraghty, MBA, President, Geraghty International, and author of Anybody Can Negotiate—Even You! Destined to become every supply manager's essential desktop tool with in-depth, authoritative coverage of each topic Leaving no stone unturned in covering all aspects of the purchasing and sourcing function, The Procurement and Supply Manager's Desk Reference is filled with everything every supply manager needs to know about the key roles and responsibilities of a procurement manager. Filled with practical aids such as checklists and customizable forms, this essential book provides an easy-to-use road map for the supply manager in the new millennium. With an eye toward incorporating proactive strategies and best practices, The Procurement and Supply Manager's Desk Reference offers detailed coverage and tips on: Procurement and Best Business Practices Sourcing Management How to select suppliers and measure performance The best way to leverage computer systems Providing value to the organization Identifying those strategies that will work best for your business for years to come
Author: Marcel Sieke
Publisher: Springer
ISBN: 3658243821
Category : Business & Economics
Languages : en
Pages : 158
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Book Description
In recent years, the design of contracts in supply chains has received significant attention from researchers and practitioners. Companies try to improve their profits by designing efficient contracts that ensure a high availability of the product at a low cost. In this book the author presents a quantitative approach for designing optimal supply chain contracts. Firstly, service level contracts, which are frequently used between a supplier and a manufacturer, are analyzed. For this contract type, optimal contract parameter combinations are identified that lead to a coordinated supply chain. Secondly, an optimal contract selection strategy is developed for a supply chain where a manufacturer can choose among multiple potential buyers. Potential readership includes scholars of supply chain management and management science, graduate students interested in these areas as well as interested practitioners involved in negotiating contracts.
Author: W. C. Benton
Publisher: Irwin Professional Publishing
ISBN: 9780071289139
Category : Business logistics
Languages : en
Pages : 0
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Book Description
This text outlines the most current methods in purchasing and supply chain management. Real case studies and exercises help students transform purchasing theory into purchasing practice and implementation. Topics include purchasing business processes, price cost analysis, professional services, and healthcare purchasing.
