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Dissertations / Theses on the topic 'Reverse logistics'
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Fonseca, Pedro Alexandre de Oliveira. "Reframing reverse logistics, reducing costs." Master's thesis, NSBE - UNL, 2013. http://hdl.handle.net/10362/11624.
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A Work Project, presented as part of the requirements for the Award of a Masters Degree in Management from the NOVA – School of Business and EconomicsThis paper studies the possible changes on the reverse logistics chain at Worten, the leading Portuguese electronics retailer, in order to further decrease costs while keeping service level high standards. Along this study different solutions are presented which comprise different operational levels such as: process improvement, rationalization of resources utilized, and transports rationalization. By recurring to the data gathered from 10 Worten stores regarding interviews, and activity costing plus the analysis of 295,506 transport movements from 2012, it was determined that there is value up to 250,000 euros to be captured only by standardizing, improving and reframing current reverse logistic processes undertaken by Worten.
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kim, jun. "SOLVING REVERSE LOGISTICS: OPTIMIZING MULTI-ECHELON REVERSE NETWORK." DigitalCommons@CalPoly, 2009. https://digitalcommons.calpoly.edu/theses/178.
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As part of sustainable development initiative, product take-back strategy encourages manufacturers to transform definition of sustainability into business practices that would reduce environmental wastes, while reducing increasingly growing waste management cost from municipal governments. This thesis evaluates the complexity of reverse logistics with regards to product take-back strategy development and presents a programmatic approach of determining appropriate number and location of initial collection points that would reduce variable cost, while promoting more frequent product return. The application of this thesis would grant ‘green’ opportunities for organizations to strategize and execute cost-efficient reverse logistics to advance sustainability. A single-objective, mixed-integer, binary programming was utilized to optimize the variable cost of handling, transshipping, facilities, and carrying of reverse logistics. Apple Inc.’s current product take-back strategy was carefully evaluated and analyzed to suggest potential improvements to its system. Network optimization design methodology along with case study results would provide useful managerial insights and suggest avenues for further research and applications.
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Дядечко, Алла Миколаївна, Алла Николаевна Дядечко, Alla Mykolaivna Diadechko, and I. I. Koblyanska. "Reverse logistics as an instrument of greening logistics." Thesis, Видавництво СумДУ, 2008. http://essuir.sumdu.edu.ua/handle/123456789/16077.
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Soto, Zuluaga Juan Pablo. "Reverse logistics: models and applications." Doctoral thesis, Universitat Pompeu Fabra, 2006. http://hdl.handle.net/10803/7338.
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En los últimos años la Logística Inversa se ha hecho relevante no solo para el mundo académico sino también para el empresarial. Las empresas dan cada día más importancia a esta área, debido a los factores medioambientales y a los beneficios derivados del mejoramiento de su proceso de devoluciones. Así mismo, para tener unos procesos de Logística Inversa eficientes y exitosos, es necesaria la colaboración entre los miembros de la cadena de suministro. Esta tesis se concentra en ambos aspectos, Colaboración y Logística Inversa.El propósito de esta tesis es doble; primero, analizar los problemas que sufren hoy en día las empresas en esta área, partiendo de una perspectiva general, y posteriormente analizando la industria editorial española. En segundo lugar, nosotros proponemos cuatro modelos matemáticos concernientes a los problemas de planificación que presentan las empresas cuando incorporan las devoluciones, y finalmente proponemos unas metodologías para solucionarlos.
During last years Reverse Logistics has become a relevant topic not only for academics but also for the business world. Companies are giving each day more and more importance to this field, because the environmental issues and the benefits that the company can obtain by the improvement of their return's processes. To obtain a successful and efficient Reverse Logistics processes there exist the need to collaborate along the supply chain. This thesis focuses on both of these two topics, Collaboration and Reverse Logistics.
The aim of this thesis is twofold; first, we try to understand the returns processes' problems that companies are facing today from the management point of view, from a general perspective and afterwards on the editorial industry. Secondly, we propose some mathematical models and solution methods related to real planning problems faced by the companies when the returns are incorporated.
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Reddy, Dhananjaya. "A Study on Reverse Logistics." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-11789.
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In the competitive world of manufacturing, companies are often searching for new ways to improve their process, customer satisfaction and stay ahead in the game with their competitors. Reverse logistics has been considered a strategy to bring these things to life for the past decade or so. This thesis work tries to shed some light on the basics of reverse logistics and how reverse logistics can be used as a management strategy. This paper points out the fundamentals of reverse logistics and looks into what kind of decisions today’s logistics managers have to take on a daily basis for the improvement of their logistics model. A growing concern has been developing to control rising global pollution, this paper also brings out some of the effects of reverse logistics decisions on the environment and vice versa. The thesis starts out by compiling the works of researchers and logistics experts in the field of logistics in the theoretical background section. Through a survey conducted in a few manufacturing firms in India, a small picture of the extent to which reverse logistics has penetrated the manufacturing world has been drawn.
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Reznik, V., L. Savchenko, В. Резнік, and Л. Савченко. "Cannibalization process in reverse logistics." Thesis, National Aviation University, 2022. https://er.nau.edu.ua/handle/NAU/54821.
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Continuous health crises, recessions, environmental and climate breakdown make sustainable procurement essential to building more resilient, sustainable and just societies. The UN's 2030 Agenda for Sustainable Development promotes procurement practices that are sustainable in accordance with national policies and prioritiesПостійні кризи в галузі охорони здоров’я, рецесії, екологічні та кліматичні проблеми роблять стабільні закупівлі важливими для побудови більш стійких, стійких і справедливих суспільств. Порядок денний ООН зі сталого розвитку до 2030 року заохочує практику закупівель, яка є стійкою відповідно до національної політики та пріоритетів
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Brito, Marisa P. de. "Managing reverse logistics or reversing logistics management? = Beheersing van retourlogistiek of omgekeerde beheersing van logistiek? /." Rotterdam : Erasmus Research Institute of Management, 2004. http://hdl.handle.net/1765/1132.
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Nguyen, Thi Van Ha. "Development of Reverse Logistics – Adaptability and Transferability." Phd thesis, TUprints, 2012. https://tuprints.ulb.tu-darmstadt.de/3220/1/NguyenHa_Dissertation_2012.pdf.
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The increasing enforcement of take-back laws and the changing requirements of external environments, e.g. shorter lifecycle products, increasing customer demands, and growing electronic retailing and catalogues, have made both producers and distributors in the European industry face the challenges of managing returned and discarded products that relate to reverse logistics. In particular, manufacturers of electrical and electronic equipment have to perform the completely new tasks of collecting their products put on the market at the end-of-life and providing an appropriate recovery program at no charge.
This study investigates the adaptability to reverse logistics in the European electronics industry and the transferability of reverse logistics management models from European countries to Vietnam at firm and network level. This study conducted survey methodology, content analysis of published case studies, and in-depth interview with firms to investigate the adaptability and transferability.
This study made some academic contributions towards enriching the applications of the organizational theories in the specialized field of reverse supply chain management. Moreover, this study also contributed to some managerial implications for producers, distributors, service providers, and policy makers to improve reverse logistics performance at both firm and network level.
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Olovsson, Malin, and Liliane Khalil. "Reverse Logistics Study at Volvo CE CST Europe." Thesis, Mälardalen University, Department of Innovation, Design and Product Development, 2008. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-639.
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Assignment:
The mission of the assignment is to map the four return flows with respect to returning volume, weight, frequency, pick up- and delivery points. Today Volvo CE has a lack of information that concerns their own Reverse logistic processes. It is hard for Volvo CE to see where changes need to be done, due to limited reliable sources.
Purpose:
The purpose with the study is to make the return flows easier, less expansive and more manageable for both Volvo and their dealers. Further, environmental issues have to be considered in order to find improvements of the returning routines. The analysis is done to bring forth a proposal that will contribute to less unnecessary transports and that also will make it possible to reduce cost.
Result:
A couple of improvement areas have been discovered, some of them are radical while others are incremental. The one thing they have in common is to make sure that the return flows are being handled and seen as one common flow rather then separately treated. Among the improvements these are some recommendations to Volvo CE:
- Appoint special delivery point for warranty returns and make sure that the warranty routines are followed so that unnecessary transports can be reduced. - Store less cores for remanufacturing at the Core Hub. Cores that are not needed are not necessary to transport to the Core Hub. - Make better cost registrations and cost follow ups and evaluate customer satisfaction to be able to find improvement areas in the future.
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Salvador, Sherif John Agboola. "Reverse logistics practices in the Nigerian pharmaceutical sector." Thesis, University of Hull, 2017. http://hydra.hull.ac.uk/resources/hull:16450.
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This thesis presents findings from an exploratory study of reverse logistics practices in the Nigerian pharmaceutical private sector. Reverse logistics has received increased attention in recent years due to the sustainability and circular economy implications of value recapture and end-of-life product disposition. A significant amount of reverse logistics research has been done in developed countries but very little has been undertaken in the pharmaceutical industry and developing nations, particularly Africa where recent health crises such as the Ebola virus necessitate safe and proper reverse logistics solutions. This study investigated characteristics, similarities and differences in pharmaceutical reverse logistics practices of 19 private sector pharmaceutical organisations in Nigeria including the regulatory authority to determine facilitating, enabling and inhibiting factors and develop improvement opportunities for the sector. This exploratory research used a multiple case study method involving semi-structured interviews with pharmaceutical supply chain stakeholders and practitioners to explore five research questions within a seven perspectives framework derived for this study. Empirical findings came from within-case, within case-category, and cross case-category analysis of the 19 case organisations. This study contributes a conceptual understanding of pharmaceutical reverse logistics management through operationalising the seven perspectives framework and developing a typology of six important pharmaceutical reverse logistics process flows. This study has identified specific factors that facilitate, drive, or inhibit pharmaceutical reverse logistics practices in Nigeria and differentiated them from those in extant literature. This study impacts research by providing theoretically grounded and empirically informed insights into reverse logistics practices in both the pharmaceutical supply chain and a developing nation, Nigeria. To the researcher’s knowledge, it is the first of its kind to do so. This study augments the reverse logistics content framework by including a seventh perspective, the “when perspective”. The extended reverse logistics framework provides a basic structure upon which researchers can utilise to explore various issues in reverse logistics, thereby providing a starting point for future pharmaceutical reverse logistics researchers, particularly in developing countries. This study contributes to practice by revealing the ‘current state’ of pharmaceutical reverse logistics practices in the Nigerian private sector, identifying improvement opportunities, and suggesting implementable measures to facilitate best practice. Finally, this study contributes to the increasing usage, and applicability of qualitative methods in logistics research.
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Kaga, Akihiro 1975. "Application of real options to reverse logistics process." Thesis, Massachusetts Institute of Technology, 2004. http://hdl.handle.net/1721.1/29525.
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Thesis (M. Eng. in Logistics)--Massachusetts Institute of Technology, Engineering Systems Division, 2004."June 2004."
Includes bibliographical references (leaves 104-106).
In this thesis, real options are used to identify the optimal model for the reverse logistics process of a technology company in the circuit board business. Currently, customers return defective boards and the company repairs the boards and sends them back. Now that the new product cost is falling below the level of the repair cost, the company is considering an alternative operational model, which is to scrap the returned boards and swap them with new products. As the product cost declines, it is also widely fluctuating, and it is this fluctuation that makes the switching option between the repair and swap model valuable. The repair and swap models (with and without switching options) will each produce different cost saving amounts with different degrees of risk. As a result of real options analysis, the swap model with the switching option to repair is determined to be optimal and has only modest risk. Specifically, the costs would be reduced by $1.3 million (of which $0.9 million is the option value) and by 18% compared to the costs under the current model, and the volatility will only moderately increase from 8% to 11%. However, it should be noted that the model is sensitive to both volatility and switching cost. Unlike the traditional methodologies, such as optimization or discounted cash flow analysis, real options quantifies the option value as well as the risk and hence shows the maximum investment necessary to obtain the option. That being said, in this thesis, optimization (the news vendor approach), simulation (Monte Carlo simulation), and discounted cash flow analysis take complementary roles to real options analysis. The option value is significant when the key uncertainties (e.g., the product cost, repair cost, and volume) are volatile
(cont.) because the option allows businesses to capture upside opportunities while protecting them from downside risks.
by Akihiro Kaga.
M.Eng.in Logistics
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Hughes, Nina(Nina Yuchen). "Reverse logistics supply chain process modeling and simulation." Thesis, Massachusetts Institute of Technology, 2019. https://hdl.handle.net/1721.1/122581.
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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, 2019, In conjunction with the Leaders for Global Operations Program at MITThesis: S.M., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, 2019, In conjunction with the Leaders for Global Operations Program at MIT
Cataloged from PDF version of thesis.
Includes bibliographical references (page 67).
As consumer preferences shift towards online shopping and utilizing their homes as fitting rooms, traditional brick and mortar retailers are faced with the challenge to adapt. Many retailers are experiencing a growing number of returned merchandize, many of which cannot be easily resold to consumers due to various supply chain challenges. This thesis explores the opportunities to improve the consumer returns process and presents methods for modeling the supply chain process for reverse logistics in the retail industry derived from case studies. The model then allows for hypothesis testing. By changing parameters in the model, this thesis further explores the scenarios in which the supply chain process may be improved to increase margin and decrease cost. The primary recommendations include specific modifications to the current reverse supply chain flow, enabling new channels that improve speed and margin, as well as developing the decision tool further for better accuracy and integration into the supply chain.
by Nina Hughes.
M.B.A.
S.M.
M.B.A. Massachusetts Institute of Technology, Sloan School of Management
S.M. Massachusetts Institute of Technology, Department of Civil and Environmental Engineering
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Toledo, Hernández Cecília [UNESP]. "Modelo de gerenciamento da logística reversa integrado às questões estratégicas das organizações." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/106428.
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O aumento do número de produtos com vida útil menor, a intensificação no uso do comércio eletrônico, leis cada vez mais exigentes de responsabilidade sobre descarte dos produtos e uma crescente consciência ambiental têm gerado um elevado número de retornos, fazendo crescer a importância da Logística Reversa para as empresas e para a sociedade, de forma geral. Contudo, constatou-se na literatura que se trata de uma área ainda pouco explorada, que carece de histórico e estatísticas que a mapeiem e, portanto, não existem dados concretos para se trabalhar e explorar as oportunidades de melhoria. Com o intuito de mitigar esta carência, foi realizada uma pesquisa bibliográfica acerca da relação entre a Logística Reversa e o desempenho empresarial, bem como uma pesquisa junto às empresas procurando verificar como se dá este relacionamento. A utilização de um método de pesquisa misto com estratégia exploratória possibilitou captar informação sobre os programas e atividades específicas da Logística Reversa nas empresas brasileiras. Como resultados principais desta tese obteve-se um modelo conceitual para abordar a Logística Reversa na estratégia das organizações e um conjunto de indicadores que possibilitam avaliar o seu desempenho. Adotou-se um Método de Tomada de Decisão com Múltiplos Critérios para ajudar na escolha dos indicadores, que foi a chave para o funcionamento adequado do modelo proposto. A validação do modelo, junto a especialistas das empresas envolvidas na pesquisa, demonstrou que seu uso é factível e que ele oferece alternativas sobre como intervir nas atividades da Logística Reversa no sentido de alinhá-la aos objetivos estratégicos das empresas.
The increase in the number of items with a lower useful life, the massive use of ecommerce, an increased environmental awareness and increasingly demanding laws on disposal of products responsibility, has created a elevated number of returns, making to grow the importance of Reverse Logistics for society and companies, in a general fashion. It was found in the literature, however, that Reverse Logistics is still a poorly explored activity, without historical and statistical data that maps it and consequently, there is no concrete data to work with and to explore the opportunities for improvement. With the goal of minimizing this deficiency, a bibliographic research about the relation between the Reverse Logistics and the business performance was made, besides a research along the companies seeking to verify how this relationship is made. Using a mixed research method with exploratory strategy allowed picking up information about the programs and specific activities of Reverse Logistics in Brazilian companies. As the main result of this thesis, a conceptual model for addressing the Reverse Logistics in the organizations strategy and a set of indicators that allow assessing their performance was obtained. A Multiple Criteria Decision Making was adopted to help in the choice of indicators, which was the key to the proper functioning of the proposed model. The validation of the model, along with experts from companies involved in research, has demonstrated that its use is feasible and it offers alternatives on how to intervene in the activities of Reverse Logistics in order to align it with the strategic objectives of companies.
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Sun, Siying. "Inventory Management in Reverse Logistics in FAW Co., Ltd." Thesis, Mälardalens högskola, Akademin för innovation, design och teknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-21619.
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Recycling and remanufacturing returned goods are economically beneficial for companies since the cost of obtaining used parts is lower in many cases and selling price is close to that of a new product. This leads to decreased costs and thereby increased profits for the company. In addition, there are also great environmental benefits by keeping the structural integrity of a part; the energy used for disassembly and refurbishing is much lower than the energy required for raw material extraction and machining. Encompassing the returned goods makes the supply chain to closed loop supply chain, which is different from the traditional supply chain due to reverse logistics. A reverse flow of material is however usually more complex than a forward flow of parts and components from suppliers. This means that inventory management becomes critical and needs to be viewed from a new perspective. The purpose of the report is to study FAW Co., Ltd’s inventory situation in reverse logistics. The report analysed the inventory management in the company, specifically focusing on one product as the instance Motor Engine LFTS-2000since it is in the maturity stage of product life cycle. Two scenarios were designed to consider how different parameters affect inventory levels in reverse logistics. The report analysed how different parameters affect the inventory levels and minimum cost. With the increasing returned goods are processed, inventory levels and minimum cost will decrease correspondingly.
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El, Barky Sahar Sobhy. "An enhanced method for core assessment in reverse logistics." Thesis, University of Strathclyde, 2011. http://oleg.lib.strath.ac.uk:80/R/?func=dbin-jump-full&object_id=18808.
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Fleck, Jonathan M. (Jonathan Michael) 1974. "21st century reverse logistics : consumer to business space explored." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/8730.
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Thesis (M.Eng.)--Massachusetts Institute of Technology, Engineering Systems Division, 2000.Includes bibliographical references (leaves 58-64).
Despite a growing body of information about the importance of good logistics and supply chain management, there remains a dearth of research regarding consumer-to-business reverse logistics (the collection of processes required to move individual goods from individual end-consumers to the appropriate retailer, manufacturer, or third party). Indeed, there is not a comprehensive framework to assist enterprises in understanding, evaluating, creating, implementing, or changing a consumer-to-business reverse logistics policy of program. Given the growth of e-commerce and the Internet channel, where goods are often delivered to end-consumers in quantities of one and may likely be returned in quantities of one, this absence of a framework is peculiar. This thesis seeks to fill that gap by utilizing analysis of existing literature, as well as extrapolation of recent trends and developments in reverse logistics service offerings, technology, and last mile solutions. The results are that there is enough available information on the processes and issues surrounding consumer-to-business reverse logistics that a flexible and pragmatic framework can be proposed for use in the United States. This is accomplished by synthesizing results with original analysis, thought, and context. Though the framework cannot be considered comprehensive, it does provide an initial tool for critique and improvement.
by Jonathan M. Fleck.
M.Eng.
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RANADE, VIKRAM B. "REVERSE LOGISTICS ISSUES IN A GLOBAL SUPPLY CHAIN SCENARIO." University of Cincinnati / OhioLINK, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1099150862.
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Schmid, Eberhard. "Koordination im Reverse Logistics : Konzepte und Verfahren für Recyclingnetzwerke /." Wiesbaden : Betriebswirtschaftlicher Verlag Gabler, 2009. http://bvbr.bib-bvb.de:8991/F?func=service&doc_library=BVB01&doc_number=017039846&line_number=0001&func_code=DB_RECORDS&service_type=MEDIA.
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Schmid, Eberhard. "Koordination im reverse logistics Konzepte und Verfahren für Recyclingnetzwerke." Wiesbaden Gabler, 2008. http://d-nb.info/991333543/04.
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Lee, Yong Joo. "Integrated forward-reverse logistics system design an empirical investigation /." Pullman, Wash. : Washington State University, 2009. http://www.dissertations.wsu.edu/Dissertations/Spring2009/y_lee_042009.pdf.
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Narayana, Naidelage Chamari Pushpamali. "The role of reverse logistics on supply chain performance." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/207373/1/Chamari%20Pushpamali_Narayana%20Naidelage_Thesis.pdf.
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This thesis examines the effect of reverse logistics practices on supply chain performance in the construction sector that adversely impacts the environment. Mixed-method was adopted to examine the role of reverse logistics practices, environmental impacts of reverse logistics strategies, and the effect of reverse logistics on supply chain performance. Results revealed that waste management is the mere focus of reverse logistics in the industry, reuse is environmentally the best option, and reverse logistics favourably impact most of the performance criteria. The study provided recommendations for strategic decision and policy making for successful reverse logistics at macro, meso, and micro levels.
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Tadaros, Marduch. "Reverse Logistics for Lithium-ion Batteries : A study on BPEVs in Sweden." Thesis, Luleå tekniska universitet, Institutionen för ekonomi, teknik och samhälle, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-74371.
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In recent years the amount of newly registered electric vehicles, hybrid electric vehicles, and plug-in hybrid electric vehicles has increased rapidly in the Swedish market. These vehicles could be classified as battery-powered electric vehicles, and a majority carry a lithium-ion battery. The demand for lithium is expected to increase considerably, as a result of such a swift growth in battery-powered electric vehicles. Thus, if the recycling rate of lithium stays at a low level, demand could reach a scarcity-level by 2050. While neither any infrastructure nor an established process for recycling lithium-ion batteries currently exists in Sweden, this study aims to provide necessary input and verified tools for the design of a future reverse supply chain for discarded lithium-ion batteries in Sweden. The literature review of this study covers the subjects of reverse logistics, supply chain network design, and operations research. A thorough situation analysis of the Swedish market for battery-powered electric vehicles is conducted, and the composition, function, and characteristics of lithium-ion batteries are studied. The study finds that estimations of future demand of recyclable lithium-ion batteries in Sweden could be between 206 711 and 726 974 tons accumulated, based on actual and predicted sales numbers until 2030. Even if it is obvious that there are going to be large quantities of such batteries requiring recycling in the future, and even if some established processes exist, there is no defined supply chain for the collection of those batteries. Finally, a mixed-integer programming model for the design and development of a future reverse supply chain is presented. The model, characterized as a discrete multi-period facility location/allocation model, can with minor modifications be used for problems with fluctuating demand or when the demand is assumed to slowly progress until it has reached a steady state.
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Hallberg, Jonatan, and Joel Winninge. "In-plant reverse logistics: The reversed flow of steel scrap for reuse at Sandvik Materials Technology." Thesis, Linköpings universitet, Kommunikations- och transportsystem, 2015. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-119981.
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Syftet med denna studie är att kartlägga flödet av returstål inom SMT för att identifiera eventuella problem samt, om så är fallet, presentera förbättringsförslag för att åtgärda dessa. Kartläggningen visade att ett fåtal produktionsenheter står för majoriteten av returstålet som uppstår inom SMT samt att det överlag föreligger brister i sorteringen. Felsorteringen medför kostnader i form av ökad hantering, minskat materialvärde samt problem vid smältningsprocessen i Stålverket. En av anledningarna till felsorteringen är avsaknaden av återkoppling i form av kostnader och sorteringskvalitet till varje produktionsenhet. Det har via kartläggningen framkommit att transportkostnaderna är låga relativt materialvärdet. Därför är det av vikt att returstålet transporteras till Råvarugården snabbt. Resultatet av denna studie är att returstålsflödet skulle bli effektivare genom förbättrad sortering snarare än genom minskade transportkostnader.
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Alshamrani, Ahmad M. "Combined routing and product take-back strategies in reverse logistics." Full text available, 2003. http://images.lib.monash.edu.au/ts/theses/alshamrani.pdf.
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Wutz, Alexander. "Das Produktalterungsmodell und deterministische Losgrößenmodelle im Rahmen von Reverse Logistics /." Hamburg : Kovač, 2008. http://www.verlagdrkovac.de/978-3-8300-3454-4.htm.
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Wu, Yi S. M. Massachusetts Institute of Technology. "Review and improvement of reverse logistics in an electronics company." Thesis, Massachusetts Institute of Technology, 2006. http://hdl.handle.net/1721.1/38284.
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Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 2006.Includes bibliographical references (leaves 49-50).
InFocus is a worldwide leader in the digital display market. Despite its success in sales, the company posted a net loss in profit in year 2005. The major reasons are its high operating cost and high inventory level. After reviewing its reverse logistics system, we found that current policy to process the returned product does not reap the maximum amount of profit from returns. We proposed to add a new channel to process the product returns. An optimum inventory policy was also developed to maximize the profit. An alternative distribution channel of the service parts was suggested which can cut down the inventory level and reduce the operating cost.
by Yi Wu.
M.Eng.
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Krones, Jonathan Seth. "Reverse logistics and large-scale material recovery from electronics waste." Thesis, Massachusetts Institute of Technology, 2007. http://hdl.handle.net/1721.1/42994.
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Thesis (S.B.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 2007.Includes bibliographical references (p. 107-111).
Waste consolidation is a crucial step in the development of cost-effective, nation-wide material reclamation networks. This thesis project investigates typical and conformational tendencies of a hypothetical end-of-life electronics recycling system based in the United States. Optimal waste processor configurations, along with cost drivers and sensitivities are identified using a simple reverse logistics linear programming model. The experimental procedure entails varying the model scenario based on: type of material being recycled, the properties of current recycling and consolidation practices, and an extrapolation of current trends into the future. The transition from a decentralized to a centralized recycling network is shown to be dependent on the balance between transportation costs and facility costs, with the latter being a much more important cost consideration than the former. Additionally, this project sets the stage for a great deal of future work to ensure the profitability of domestic e-waste recycling systems.
by Jonathan Seth Krones.
S.B.
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Triantafyllou, Maria K. "Sustainable forward and reverse logistics practices across competing supply chains." Thesis, University of Southampton, 2012. https://eprints.soton.ac.uk/360331/.
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In recent years, rapid changes in markets including outsourcing and globalisation of trade and production systems have led to a dramatic upsurge of interest in retail logistics with the aim to minimise operational and logistics costs, improve responsiveness and ameliorate customer services. The notable massification and commodification of production and consumption have created structural changes in traditional urban distribution systems with the establishment of peripheral transshipment and hub systems. In the light of sustainable development, green logistics and transparency on emissions have become a further requirement conforming to the times with a special focus being placed on the logistics of collecting, processing and recycling waste materials. This has increased the need to develop more efficient and effective city distribution plans and to establish optimised logistics models which will integrate the delivery of materials and the collection of waste and returns in order to reduce congestion, costs and emissions. To this end, this thesis aims to investigate opportunities to improve existing delivery mechanisms in a dedicated shopping centre in the UK in order to minimise freight activity and emissions, while optimising the reverse flow system for product returns and waste. Using a substantial database of logistics operations compiled for 92 businesses in Southampton’s shopping centre, the study aimed to understand the current opportunities to better utilise the existing back-load capacity and assess the potential logistical and environmental savings that could arise from the use of a peripheral consolidation centre for core goods and waste. Following statistical analysis on WestQuay managers, logistics providers, waste contractors and head offices responses it was found that the fill rates of delivery vehicles were considerably low and therefore there was a great potential to increase back-load rates and consolidation among loads of different businesses. In examining the waste and return flows it was found that there were already centrally managed collections of general waste and some recyclables and therefore further opportunities to reduce the logistics and environmental impact would lie into the consolidation of forward traffic and the back-loading of specific waste streams such as hazardous materials. The examination however of specific case study examples exhibited the variety in the characteristics and properties of hazardous wastes and the role of material-specific legislation on the way different waste streams should be managed and disposed of which limited the collaboration opportunities among businesses producing different waste streams. Instead the study highlighted the considerable transport, environmental and economic gains that could be achieved by individual businesses through the use of regional waste contractors and recycling sites. With regard to the consolidation of forward flows, the study reviewed a number of existing consolidation schemes and their characteristics to identify potential strengths, weaknesses and risks that would impact on the operation of a consolidation centre in the outskirts of Southampton. Various scenarios regarding the operation of the consolidation scheme were examined considering different take up combinations among different vehicle modes and loads. The scenario analysis suggested that the establishment of the consolidation centre could offer great opportunities to reduce the overall urban freight activity, while mitigating the environmental impacts and cutting down the total costs to businesses.
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Phillips, Hannah(Hannah Michelle). "A data-driven approach to continuous improvement in reverse logistics." Thesis, Massachusetts Institute of Technology, 2020. https://hdl.handle.net/1721.1/126915.
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Thesis: M.B.A., Massachusetts Institute of Technology, Sloan School of Management, in conjunction with the Leaders for Global Operations Program at MIT, May, 2020Thesis: S.M., Massachusetts Institute of Technology, Department of Civil and Environmental Engineering, in conjunction with the Leaders for Global Operations Program at MIT, May, 2020
Cataloged from the official PDF of thesis.
Includes bibliographical references (pages 78-79).
Verizon may rely on third-party logistics providers (3PLs) to manage some aspects of the reverse supply chain of Fios equipment. As a result, it depends on the 3PL to continually strive for increased quality, reliability, capacity, and speed. Above all, in order to have a successful partnership, the process must be economical for the 3PL. As several sources of variation are detrimental to the 3PL's margins and cause operational problems, Verizon is investing in the supplier relationship to ensure that the 3PL is profitable and positioned for the future. Making sure there is a "win-win" relationship is beneficial for both parties and helps to ensure that the investments that have been made will continue to result in success, including operational improvements. To do this, a culture of continuous improvement and data-driven decisions needs to be cultivated and developed at the 3PL. The goal of this project is two-fold. First, there is a need to understand the variation that exists in the 3PL's process as well as the associated costs, which include overtime, ineffective labor and production planning, and high turnover. The secondary goal of the project is to empower the 3PL to make data-driven decisions in the future and start to shift their culture to one that aligns better with Verizon's. By showing the benefits of collaboration between the two companies, this project will help build trust. In this thesis, we discuss how process mining is used to understand the 3PL's current state and guide data-driven continuous improvement. We introduce several opportunities for handling variation, including creating visibility into return volumes, reducing defects caused by incorrect packaging, and creating feedback mechanisms for operators. This is done in close collaboration with the 3PL to ensure they will ultimately have ownership of implementation.
by Hannah Phillips .
M.B.A.
S.M.
M.B.A. Massachusetts Institute of Technology, Sloan School of Management
S.M. Massachusetts Institute of Technology, Department of Civil and Environmental Engineering
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Wutz, Alexander. "Das Produktalterungsmodell und deterministische Losgrössenmodelle im Rahmen von reverse logistics." Hamburg Kovač, 2007. http://d-nb.info/987084410/04.
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Ceccon, Lia <1994>. "THE REVERSE LOGISTICS FRAMEWORK: RETURNS MANAGEMENT IN THE DIESEL CASE." Master's Degree Thesis, Università Ca' Foscari Venezia, 2019. http://hdl.handle.net/10579/15870.
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The present work analyses the return management process in a real business case, namely Diesel. Reverse Logistics is a relatively recent matter: despite the fact that return of products or material to the manufactures has always existed, its definition and scope are still evolving since the end of the twentieth century but it is clear that reverse logistics has become a key competence in the current supply chain best practice. The first two chapters outline the background of the thesis topic from a theoretical point of view: definitions, purpose and delimitations are mentioned. The third and the fourth chapter deal with the subject at a practical level. After having outlined how the company handles the reverse process, we have closely investigated the reasons why the goods return. We have used available data to calculate the incidence rate of each return category and made a comparison in the short run to understand whether the process has been smooth or it has shown critical changes. By observing the best practices, we start defining the main goal that Diesel shall pursuit in order to measure its progress in this field. Then, we have outlined what Diesel is doing and could do to improve and maximize its performance in the reverse logistics field. This conceptual framework of activities, decision variables and performance indicators will raise awareness on the fact that reverse logistics can no longer be defined as the mere opposite flow of the forward logistics. Finally, the Reverse Logistics management requires correct information and adequate procedures in order to achieve the desired level of efficiency and effectiveness: managers working in reverse logistics need to take better and informed decisions.
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Coelho, Tatiene Martins [UNESP]. "Logística reversa no Brasil: proposta de um sistema de retorno de embalagens PET." Universidade Estadual Paulista (UNESP), 2010. http://hdl.handle.net/11449/92978.
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Este trabalho apresenta a descrição do panorama brasileiro em relação à reciclagem de garrafas PET e aos processos envolvidos na recuperação de valor do produto, por meio da aplicação da logistica reversa. A relevância do estudo consiste no levantamento de informações sobre os desafios e oportunidades do setor. Em nível mundial, o Brasil é um dos maiores consumidores de PET em garrafa e os baixos custos industriais da embalagem pós-consumo aliados à falta de estrutura do canal reverso proporcionam um aumento significativo desse resíduo no meio ambiente. Buscou-se mostrar as ações realizadas no Brasil, bem como em outros Países elencados pela Associação Brasileira dos Fabricantes de Embalagens PET - ABIPET. Foi realizada uma pesquisa exploratória que consistiu no levantamento das informações junto a associações referentes ao setor de PET no Brasil. Os resultados, após a análise dos aspectos ambientais, econômicos e sociais, mostram os desafios e oportunidades para retorno de embalagens PET pós-consumo no Brasil e descrevem a necessidade de conscientizar os envolvidos direta e indiretamente; de estruturar as cadeias reversas pós-consumo; de reduzir o consumo a fim de diminuir os resíduos gerados e de envolver os setores industriais para a busca de tecnologias mais limpas junto à cadeia produtiva do PET, a responsabilidade estendida do fabricante, bem como o poder público com o objetivo de auxiliar o processo por meio de políticas públicas
This work presents a description of the Brazilian panorama over the recycling of PET bottles and the processes involved in the recovery of product value through the application of reverse logistics. The relevance of the study is a survey of information on the challenges and opportunities in the industry. Globally, Brazil is one of the largest consumers of PET bottles and the low manufacturing costs of post-consumer packaging coupled with lak of structure of the reverse channel provides a significant increase of this residue in the environment. We tried to show the actions performed in Brazil and other countries listed by the Brazilian Association of Manufacturers of PET Packaging - ABIPET. We performed an exploratory study consisted of getting information from association for the PET industry in Brazil. The results, after analysis of the environemental, economic and social aspects, show the challenges and oportunities for return of post-consumer PET in Brazil and describe the need to educate those involved directly and indirectly, to structure the post-consumer reverse; to reduce consumption in order to reduce the waste generated and to involve industries in the search for cleaner technologies along the production chain of PET, the extended manufacture's responsability and the government in order to assist the process through public policies
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Lagarinhos, Carlos Alberto Ferreira. "Reciclagem de pneus: análise do impacto da legislação ambiental através da logística reversa." Universidade de São Paulo, 2011. http://www.teses.usp.br/teses/disponiveis/3/3133/tde-09032012-140924/.
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O descarte de pneus inservíveis vem se tornando um problema mundial. No Brasil, desde 2002, os fabricantes e importadores são os responsáveis pela coleta e destinação desse material. A partir da revisão da Resolução no 258/99 e aprovação da Resolução no 416/09 houve um crescimento no número de pontos de coleta, empresas de pré-tratamento e valorização energética no país. O Brasil possui capacidade ociosa em todos os processos existentes de reciclagem e valorização energética. Este trabalho apresenta um estudo sobre a logística reversa dos pneus usados no Brasil, desde os pontos de coleta até a sua destinação final, avaliando o cenário atual e propondo mudanças para a melhoria dos sistemas implementados pelos fabricantes, importadores, revendas e distribuidores, e pelas empresas de prétratamento. Foram realizadas pesquisas de campo em pontos de coleta, empresas de pré-tratamento, borracharias, empresas de coprocessamento, de triagem e seleção, reformadores e recicladores, associações que representam os fabricantes, além de entidades internacionais que trabalham com a reciclagem de pneus com o objetivo de avaliar os modelos utilizados e comparar com o sistema implementado no Brasil. Trata-se de uma alternativa para o cumprimento das metas estabelecidas pelos órgãos ambientais para a redução do passivo ambiental. Foi montado um algoritmo genético para simulação da coleta e destinação dos pneus usados no Estado de São Paulo, sendo o excedente da capacidade enviado para os Estados de Minas Gerais e para o Paraná para coprocessamento.The discarding of dischargeable tires has becoming a worldwide problem. In Brazil, since 2002, the manufacturers and importers are responsible for collecting and destination of such product. Since the Resolution revision no 258/99 and approval of Resolution no 416/09 there was an improvement in the collect stations, pre-treatment and energetic valorization companies in the country. Brazil has an idle capacity in all existing recycling processes and energetic valorization. This thesis presents an analysis of reverse logistics for the tires used in Brazil, since the collect stations to the final destination, evaluating a nowadays scenario, proposing changes so that to improve the existing systems used by the manufacturers, importers, resale and dealers as well as for the pre-treatment companies. Field researches in the collect stations, pre-treatment, tire repair, co-processing companies, screening and selection, retread and recyclers, associations that represent the manufacturers and international entities which work with tires recycle, viewing analyze the models used by them and compare to the implemented system in Brazil. It is an alternative to comply with the established targets by the environmental entities for the reduction of the environmental liabilities. It was elaborated an algorithm and made a simulation of all collect and destination stations in São Paulo state, being the capacity surplus sent to Minas Gerais and Paraná states for co-processing.
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Marques, Maurício Dias [UNESP]. "Logística reversa de embalagens de agrotóxicos: uma análise na região da Alta Paulista." Universidade Estadual Paulista (UNESP), 2016. http://hdl.handle.net/11449/141440.
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O presente estudo objetivou analisar a estrutura da logística reversa de embalagens vazias de agrotóxicos na região da Alta Paulista, onde predomina a agricultura com considerável utilização de agrotóxicos. Alicerçada nas determinações legais e discussões de outros pesquisadores, foi efetuada coleta de dados através de formulário aplicado em 48 produtores rurais da região, bem como de questionário em quatro revendedoras de agrotóxicos e duas Centrais de Coleta de embalagens vazias. Os dados levantados junto aos produtores rurais foram analisados quantitativamente por escalonamento multidimensional e tabulação cruzada no programa SPSS 22.0, enquanto os dados dos revendedores e das centrais de coleta foram analisados qualitativamente para averiguar o cumprimento da legislação. A conclusão genérica é de que a logística reversa no primeiro elo da cadeia, os produtores rurais sujeitos da pesquisa, não funciona a contento, pois cerca de 71% a 83% deles não devolvem as embalagens e/ou não cumprem suas obrigações. As revendas procuram cumprir formalmente a legislação e as centrais de coleta realizam sua função, desde que as embalagens vazias cheguem até elas. O estudo propõe mudanças na legislação para melhoria no controle das devoluções das embalagens e incentiva novas pesquisas em outras localidades para confirmar as lacunas aqui encontradas.
This study aimed to analyze the structure of the reverse logistics of empty pesticide containers in the Alta Paulista region, São Paulo, Brazil, dominated by agriculture with considerable use of pesticides. Founded on legal provisions and discussions of other researchers, data collection was done through questionnaire applied in 48 farmers in the region, as well as a questionnaire in four dealers of pesticides and in two central collection of empty containers. The data collected from the farmers were analyzed quantitatively by multidimensional scaling and cross-tabulation in SPSS 22.0, while data from resellers and central collection were analyzed qualitatively in order to ascertain compliance with the legislation. The general conclusion is that reverse logistics in the first link in the chain, the farmers subject of the research, does not work satisfactorily because about 71% to 83% of them do not return the packaging and/or do not fulfill their obligations. The resellers seek to formally comply with the legislation and the central collection seek fulfill its mission since the empty containers arrive there. The study proposes changes in legislation to better control of discards of packaging and encourages further research in other locations to confirm the gaps found here.
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Larsson, Fredrik, and Martin Creutz. "Reverse Logistics : Case study comparison between an electronic and a fashion organization." Thesis, Internationella Handelshögskolan, Högskolan i Jönköping, IHH, Centre of Logistics and Supply Chain Management, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:hj:diva-18229.
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A large number of organizations that offer products today are experiencing returns; whether it is the return of a book from an online book store, the return of a television to the electronic retailer or a garment to a fashion retailer. How organizations handle product returns (reverse logistics) differs and also how much focuses each organization places on it, be-cause after all; it is extremely difficult to actually make revenue on reverse logistics. Why spend time and money on it? This study focuses on comparing an electronic and a fashion organization, how they both are conducting reverse logistics in regards to e-commerce. This is of interest to examine and add to the literature based on research focusing on a comparison between two organizations of a different nature in terms of their reverse logistics. Furthermore, it was of interest to study how each organization operates internally. For example, what are the barriers and drivers of reverse logistics, do they work proactively or reactively and what is the focus in regards to recycling of products? A case study research strategy was applied with an inductive approach. Data was collected through semi-structured interviews with each organization where qualitative data was gathered. Secondary data was collected from literature sources such as academic journals and books. Data was analysed in order to structure the large amount of data to be able to compare the two organizations and draw conclusions. From analysing the data it is concluded that both the electronic and the fashion retailer are experiencing a great amount of returns, which generally follows the sales trend. Furthermore, the two organizations are similar in several aspects regarding reverse logistics although they are selling different products. One of the main drivers for both organizations in regards to reverse logistics is satisfying their customers. Finally, one of the main barriers for each organization was the costs that play a major role in reverse logistics. Overall, the study shows that it greatly depends on the nature of the products how reverse logistics processes are handled in the organization.
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Benedito, Ernest. "Influence of reverse logistics on optimal manufacturing, remanufacturing, and storage capacities." Doctoral thesis, Universitat Politècnica de Catalunya, 2010. http://hdl.handle.net/10803/52089.
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El propósito de la presente tesis es estudiar la influencia de la logística inversa en las capacidades de fabricación, refabricación y almacenaje óptimas de un sistema industrial.
El interés por la logística inversa ha crecido en los últimos años de forma paralela a la preocupación, creciente también, por las cuestiones medioambientales en el mundo industrializado. En el capítulo 2 se hace una introducción a la logística inversa, explicando su definición y los motivos por los que se ha creado esta área de gestión diferenciada de la logística tradicional; se describen los tipos de productos que intervienen en la logística inversa y los distintos procesos para recuperar su valor. Además, se analizan las características del comportamiento de un sistema con logística inversa, comparándolas con las de un sistema tradicional.
En el capítulo 3 se revisa la literatura tanto en el ámbito de la gestión de las capacidades de fabricación y almacenaje en un sistema tradicional como en el ámbito de la logística inversa.
Para cumplir con el objetivo de la tesis, en los capítulos 4, 5 y 6 se estudian tres modelos de un sistema en que el producto recuperado es indistinguible del producto nuevo. El proceso seguido para realizar el estudio ha sido el mismo en cada uno de los modelos presentados: en primer lugar se ha determinado la política de producción óptima utilizando una cierta función de coste y suponiendo que tenemos dadas unas capacidades fijas, en segundo lugar se ha determinado el valor óptimo de las capacidades que optimizan la función de coste y en tercer lugar se estudian las variaciones de las cantidades óptimas al variar algunos parámetros relacionados con la logística inversa.
En el capítulo 4 se pone de manifiesto cómo influye la aleatoriedad de los retornos en las capacidades óptimas estudiando un sistema con demanda uniforme y retornos aleatorios. La función de coste a optimizar es el valor esperado del coste en un periodo.
En el capítulo 5 se estudia un modelo en el que la demanda y los retornos son funciones conocidas, continuas y periódicas. La función de coste a optimizar es el coste incurrido en el periodo y el problema de determinar la política de fabricación óptima es un problema de control óptimo. El modelo presentado permite analizar la variación en las capacidades óptimas al variar el plazo entre la venta y los retornos de los productos.
En el capítulo 6 se trata un modelo con demanda y retornos aleatorios. La función de coste a optimizar es el valor esperado del coste en un periodo. Para realizar el cálculo de las políticas óptimas se hace la hipótesis de independencia estocástica de los retornos, comúnmente utilizada en la literatura. Una vez calculadas las capacidades óptimas se contrasta la validez de la hipótesis mediante simulación. El modelo se utiliza para estudiar la dependencia de las capacidades respecto de la probabilidad de que el producto sea retornado y respecto de los costes variables de refabricación.
Finalmente en el capítulo 7 se recogen las conclusiones y los futuros temas de investigación.The purpose of this thesis is to study the influence of reverse logistics in optimal manufacturing, remanufacturing and storage capacities of an industrial system. The interest in reverse logistics has grown in recent years in parallel with the increasing concern about environmental issues in the industrialized world. In chapter 2, we provide an introduction to reverse logistics: explaining the definition of reverse logistics and the reasons for which has been created as a differentiated area of management of traditional logistics, describing the types of products involved in reverse logistics and the different processes to recover its value, and examining the behavioral characteristics of a reverse logistics systems, compared with the traditional logistics system. In chapter 3 we review the literature both in the field of capacity management in traditional systems and in the field of reverse logistics. To meet the objective of the thesis, we study three models of a system in which the recovered product is indistinguishable from the new product. The process followed for the study was the same in each of the models presented: firstly, we determine the optimal production policy for every value of capacities; the second step is determining the optimal value of the capacities when optimal policies are applied and third we study the dependency of optimal capacities on some parameters related with reverse logistics. In chapter 4 we study a system with uniform demand and random returns to show the influence of the randomness of returns in the optimal capacities. The cost function to optimize is the expected value of cost in a period. In chapter 5 we study a model in which demand and returns are known functions, continuous and periodic. The cost function to optimize is the cost incurred in the period and the problem of determining the optimal production policy is an optimal control problem. Using this model, we analyze the dependence of optimal capacity on the time between sales and product returns. In chapter 6 we present a stochastic model where demand and returns are sequences of random variables. The cost function to optimize is the expected value of cost in a period. To perform the calculation of optimal policies we assume that returns are stochastically independent of demand (this assumption is commonly used in the literature). The hypothesis is validated by simulation after optimal capacity is calculated. The model is used to study the dependence of the optimal capacities on the probability that the product is returned and also on the variable costs of remanufacturing. Finally in chapter 7 we discuss the conclusions and future research topics.
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Sharma, Manu. "Reverse Logistics and Environmental Considerations in Equipment Leasing and Asset Management." Diss., Georgia Institute of Technology, 2004. http://hdl.handle.net/1853/4869.
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Reverse Logistics and Environmental Considerations in Equipment Leasing and Asset Management
Manu Sharma
151 Pages
Directed by Dr. Jane C. Ammons
Today many business enterprises employ capital assets in the form of electronic equipment (e.g., personal computers, workstations and peripherals) in large quantities. As a result of rapid technological progress, these products have a very short life cycle, typically not much more than three or four years. Unfortunately, the disposal of electronic equipment (which contains hazardous materials) presents an environmental problem. In the face of rapid equipment changes, current tax laws and disposal challenges, leasing or procurement contracts with take-back considerations are attractive. For a large electronic equipment leasing company, optimal management of assets supported by good logistics decisions is crucial and may provide a significant competitive advantage. The leasing company tries to maximize operating profits through key decisions associated with the length of leases, efficient utilization of logistics facilities for material flow to and from customer sites, and equipment reuse, refurbishment and disposal actions.
In this research, a mixed integer linear programming (MILP) model is developed to facilitate better decisions from the perspective of an electronic equipment leasing company. The model reduces to a linear program (LP) under certain cost assumptions. All computational results are based on the LP version of the model. A case study with representative industry data validates the approach and demonstrates the utility of the model in answering key research questions. Next, important problem uncertainties are identified and prioritized. The effects of these key uncertainties on optimal lease length and product flow decisions are examined in detail via an extended case study. It is also shown how the leasing company can make near-robust leasing decisions in the face of these uncertainties.
The computational research results also have implications for policy formulation on electronic waste. The important insights include an understanding of the potential impacts and expected effectiveness of alternative environmental legislation in different geographic areas, and the imposition of negative externalities on other policy realms as a result of this non-uniform approach. Therefore, this research contributes new models and understanding to the intersection of the fields of reverse logistics and equipment replacement, and provides valuable insights to both business asset managers and environmental policy makers.
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Rahman, Asgar. "The optimal reverse logistics network for consumer batteries in North America." Thesis, Massachusetts Institute of Technology, 2013. http://hdl.handle.net/1721.1/90702.
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Thesis: S.M. in Engineering and Management, Massachusetts Institute of Technology, Engineering Systems Division, System Design and Management Program, 2013.Cataloged from PDF version of thesis.
Includes bibliographical references (pages 79-81).
The recycling of household consumer batteries is gaining legislative support throughout North America. The intent of this thesis document is to provide a broad overview of the current North American reverse logistics network for consumer batteries. Topics discussed include the viability of recycling for particular battery chemistries, collection methods, recycling methods, the current legislative environment, and the incentives to participate in the reverse logistics network for the various stakeholders identified. This document culminates in the explicit high-level definition of the available reverse logistics networks and the execution of a global warming potential analysis for each network. It is shown that, of the two available reverse logistics networks, in terms of kg C02 equivalents generated per metric ton of batteries processed one network is approximately double the environmental impact of the other. However, despite the magnitude of this difference, in an overall context this difference may not outweigh other factors for consideration. These other factors include cost, materials recovered, and overall environmental impact which would consider ecosystem quality and human health. This research was conducted using available public information as well as interviews with key individuals who are directly participating in the reverse supply chains.
prepared by Asgar Rahman.
S.M. in Engineering and Management
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Lozano, Pruneda Hector 1974. "Reverse logistics process identification in the business to consumer electronic commerce." Thesis, Massachusetts Institute of Technology, 2000. http://hdl.handle.net/1721.1/8732.
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Thesis (M.Eng.)--Massachusetts Institute of Technology, Engineering Systems Division, 2000.Includes bibliographical references (leaves 60-66).
commerce will have to prove its reliability and convenience. Operational excellence and coordination among the supply chain will allow e-vendors to offer services like on-time delivery and simple return processes, vital factors for electronic vendors' success. The purpose of this thesis is to identify the differences across the reverse logistics process. To accomplish this, the return policies and procedures of ninety-three leading companies that sell products on the Internet directly to consumers were carefully studied. Seven different return processes and four main activities included in them were identified and formally described. Each process is designed to satisfy a specific set of needs, thus they differ considerably from each other. Since logistics is a major part of the cost structure of operating a virtual store (e-tailer) every aspect of it has to be carefully studied and efficiently performed. The author has selected this sole aspect of reverse logistics to focus the research of this thesis and identify and describe the different processes that are currently used by e-vendors.
by Hector Lozano Pruneda.
M.Eng.
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Tanai, Yertai. "Capturing value from decentralized supply chain with third party reverse logistics." Kent State University / OhioLINK, 2016. http://rave.ohiolink.edu/etdc/view?acc_num=kent1478561470801379.
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"Reverse logistics: models and applications." Universitat Pompeu Fabra, 2006. http://www.tesisenxarxa.net/TDX-0203106-130305/.
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Rachmat, Agatha, and 謝梅華. "A Multi-Product Reverse Logistics Model for Third-Party Logistics." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/33305916641962386347.
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碩士國立嘉義大學
行銷與運籌研究所
99
A variety of environmental problems now affect our entire world deriving the increase of customer awareness of environmental issues. As these concerns start to affect the customer’s purchasing decisions, manufacturers are increasingly forced to consider their product’s impact on the environment. Such progression has stretched the responsibility of producers beyond the production and distribution to the responsibility for their products at the end-of-life (EOL) of their life cycle. Thus, reverse logistics has been an important issue among industries. It is viewed in the past as a "secondary" operation to the new product side of business, has now moved to the forefront as a strategic and integral part of the drive to improve the production quality and increase customer satisfaction. Reverse logistics is a series of distribution activities involved in product returns, source reduction, conservation, recycling, substitution, reuse, disposal, refurbishment, repair and remanufacturing. Reverse logistics focuses not only on EOL product but also on servicing product return which includes non-used product. With the complexity of reverse logistics, many companies with limited resources outsource their reverse logistics operations to third-party logistics (3PL) providers. Because of the complexity of reverse logistics, developing a mathematical model has been commonly used in order to solve the network problem to gain an optimal result. Most of the previous developed mathematical models focus on discrete mathematical model without considering the uncertainty factor. This research develops a mathematical model that is able to represent the complex network of reverse logistics to be handled within the network provided by 3PL companies. The objective of the mathematic model is to minimize the total operation cost considering multi-product, multi-echelon, and demand uncertainty. Numerical experiments and sensitivity analysis are conducted by using the data from Environmental Protection Administration of Taiwan and Environmental Protection Bureau of Chiayi, Taiwan. The results of numerical experiments show that the optimum of the reverse logistics can be obtained with centralization of the reverse logistics network by a 3PL. From the sensitivity analysis, penalty cost and buying cost are shown to be important in the decision of reverse logistics management.
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Huang, Ying-Chuan, and 黃英泉. "Improvement of Reverse Logistics Scheduling Problem." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/88051691263409600512.
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碩士東吳大學
資訊管理學系
99
The vehicle routing problem with time windows constraints belongs to an optimization problem with large scale, non-linear, and integer solution aggregate constraints. The computational time required for getting the solution becomes longer with the increasing of the problem scale. And hence, the optimum solution cannot be obtained. Currently, the vehicle routing problems mostly focus on the problem of forward logistics and not many studies in reverse logistics have been conducted. In this study, the concept of coloring theory is used to compute the number of the dispatched cars with both time windows and the capacity constraints. The objective is to find the approximated number of cars for vehicle routing problem by utilizing coloring algorithm.
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Kassem, Sally S. "Integrated Forward and Reverse Logistics Network Design." Thesis, 2011. http://spectrum.library.concordia.ca/7337/1/Kassem_PhD_S2011.pdf.
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Many manufacturers are moving towards green manufacturing. One of the actions for environment friendly manufacturing is collection of end-of-life products (EOL). EOL products are transported to the proper facilities for reprocessing or proper disposal. Movement of collected products is performed through reverse logistics networks. Reverse logistics networks may be designed independent of forward logistics networks, or as integrated networks, known as integrated forward and reverse logistics (IFRL) networks. Recent research shows that IFRL networks are more efficient than independent networks. In this work, we study a number of IFRL networks. We present a comprehensive mathematical model to represent an assignment and location-routing IFRL network. Afterwards, this model is decomposed into a number of sub-models that represent different IFRL networks. For each network we develop a solution methodology to solve practical size problems.
Two sub-models based on the comprehensive model are presented to design two IFRL location-routing networks. The first network considers decision on the location to establish a disassembly plant. The second network considers decisions on the location to establish a manufacturing facility. For both networks, routing decisions are assigning customers to vehicles, and establishing vehicles’ routes. We develop two heuristic methods to solve the models. The heuristics are able to reach optimal or near optimal solutions in reasonable computational times.
The vehicle routing problem with simultaneous pickup and delivery and time windows (VRPSPD-TW) is studied in this work. We use a sub-model of the comprehensive model to represent the problem. Classic heuristics and intelligent optimization or metaheuristics are widely used to solve similar problems. Therefore, we develop a heuristic method to solve the VRPSPD-TW. Results of the heuristic serve as initial solutions for a simulated annealing (SA) approach. For most tested problems, the SA approach is able to improve the heuristic solutions, and reach optimal solutions. Computational times are reasonable for the heuristic and SA.
We also study the multi-depot vehicle routing problem with simultaneous pickup and delivery and time windows (MDVRPSPS-TW). A sub-model of the comprehensive model represents the problem. The network considers assignment of customers and vehicles to depots, assignment of customers to vehicles and routing of vehicles within customers’ time windows. We develop a 2-phase heuristic and a SA approach to solve the problem. Heuristic solutions serve as initial solutions for the SA approach. SA is able to reach optimum or near optimum solutions. Computational times are reasonable for the heuristic and SA
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Lee, Tsung-Te, and 李從德. "Reverse Logistics Service Requirements: High-Tech Firms’Perspectives." Thesis, 2007. http://ndltd.ncl.edu.tw/handle/3cv2j4.
Full textAbstract:
碩士國立高雄第一科技大學
運籌管理所
96
Reverse logistics is much more complex than forward logistics, and not easy to manage, therefore, it has become a trend for many firms to outsource their reverse logistics activities to third party logistics providers (3PLs). Hence, it is a critical issue for 3PLs to understand how to utilize their existing resources and service capabilities to meet this demand, and what kind of operational functions are required by the customers. This study attempts to propose an ANP structure to figure out the service requirements by investigating the criteria and elements of reverse logistics operational functions evaluated from high-tech firms’ perspectives, besides, interdependencies among the elements are also observed. The result shows IT management is the most important operational function. It also helps 3PLs to consider the future directions of developing reverse logistics.
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Huang, Alex, and 黃詩彥. "A Exploratory Study on Business Reverse Logistics." Thesis, 2000. http://ndltd.ncl.edu.tw/handle/10060714217150213668.
Full textAbstract:
碩士東吳大學
企業管理學系
88
Business logistics is a significant part for businesses on which enterprises developed logistics management skills to enhance competitiveness. Logistics professionals and researches are placing most emphasis on the forward logistics. However, from the total cycle perspective of a supply chain, it is very important to consider reverse logistics issues. Reverse logistics refers to the role of logistics in product returns, source reduction, recycling, material substitution, reuse of materials, waste disposal, refurbishing, repair and remanufacturing. Thus, the progressing of the reverse logistics knowledge and skills will have a significant effect on business models. The purpose of this study are: to synthesize business reverse logistics studies in the recent foreign literatures and conduct several reverse logistics case studies in Taiwan to build a conceptual analytical model for business reverse logistics study. The business reverse logistics conceptual analytical model is composed of the application background before and after change, motivation for reverse logistics project, performance evaluation and key success factors. The conclusions of this study are as follows. 1.A business reverse logistics conceptual analytical model was developed and applied in this study. It can be used for both academic research and practical use. 2.Any business reverse logistics program needs clear understanding of its application background and motivation. 3.Economy of scale is an important catalytic factor in most reverse logistics program. 4.Government should make more efforts to improve the business reverse logistics. 5.Successful business reverse logistics program can not only increase business profitability but undertake the responsibility for the environmental protection.
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Yang, Cyong-Wun, and 楊瓊雯. "Reverse Logistics Design at Duopoly Manufacturer Market." Thesis, 2011. http://ndltd.ncl.edu.tw/handle/90990192936670181302.
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碩士國立彰化師範大學
行銷與流通管理研究所
99
For environmental legislation and sustainable development, besides traditional forward logistics, reverse logistics also combined into business operation process. In this paper, we discuss two-echelon supply chain system with two manufacturers and one retailer, and manufacturers play the role of Stackelberg leaders. In closed-loop supply chain, manufacturers utilize product take-back strategic and product remanufacturing for cost reduction. We consider three models that no recovery system, manufacturer direct collection system and retailer indirect collection system. The result show that not only wholesale price and retail price are both decrease, but also product demand and supply chain profits are increase after product take-back activity. And the product take-back activity through manufacturers undertake would be more appropriate.
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Badenhorst, Amanda. "A best practice framework in reverse logistics." Thesis, 2013. http://hdl.handle.net/10500/10004.
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Reverse logistics is an important process that is often misunderstood. Reverse logistics can cause considerable cost, but provide numerous opportunities. Many organisations do not understand the correct processes and procedures to follow and how to manage reverse logistics efficiently. The focus of this study was on best practices in reverse logistics. A best practice framework was developed to help organisations overcome problems and manage their reverse logistics more efficiently. This study adopted a mixed method research approach with both qualitative and quantitative elements. A comprehensive literature study was conducted to develop a conceptual best practice framework in reverse logistics and a survey was conducted to seek inputs from industry in South Africa to refine the framework into a workable instrument in practice. The study concluded that the best practices identified in literature have proven to be important in practice, and applying such practices will enable organisations to manage their reverse logistics more efficiently.Business Management
M. Com. (Logistics)
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Lin, Michael, and 林志青. "Design of motherboard global reverse logistics system." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/76375518966994351155.
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Lin, Chun-Hung, and 林俊宏. "The Reverse Logistics Problems about Reclaimable Wastepaper." Thesis, 2008. http://ndltd.ncl.edu.tw/handle/35882808653855187914.
Full textAbstract:
碩士國立屏東科技大學
工業管理系所
96
The material cost of the company in recent years has increased noticeably with gradual depletion of the Earth's resources and the rise of environmental protection consciousness. Reusing the recycled materials not only can reduce the purchase cost of virgin materials but the damage to the natural environment. This study is mainly for the part of the wastepaper recycling and remanufacturing process to study both of the reverse logistics inventory models from recycler and manufacturer perspectives. The price of reclaiming will affects the return rate of wastepaper and the profit of recycler. On the other hand, manufacturer besides orders virgin materials from pulp supplier, also purchase wastepaper from recycler. The enterprises may add in recycled materials in accordance with the specific proportion mixed virgin materials while manufacturing their products. In considering the price of reclaiming and virgin material, the return rate of wastepaper, the rate of demand and productivity and other conditions, the profit models have been constructed of recycler and manufacturer, respectively. Therefore, we obtain the optimal reclaiming price, economic production and order quantity by maximizing their profits.