Inventory Optimization of Deteriorating Items: A Comprehensive Review of Carbon-Control Policies and Their Impact on Shelf Life, Greening Effects, and Rework Policies

[EN] This study examines the deteriorating inventory management problem for items with short shelf life, considering alternative carbon control strategies from 2018 to 2023. These policies include carbon cap and trade, trade and credit policy, carbon-emission control, and others. The study takes into account critical elements such as shelf life, optimal policies, modelling approaches, greening effects, subsidies, and rework policies. The analysis started with a search for 'EOQ Model' in the Science Direct database, which generated 788 items. For a comprehensive evaluation, were restricted our resources to 329 scientific publications, including deterioration. Following that, it was limited to carbon emissions, obtaining 123 results. The papers referenced above cover a wide range of issues, including remanufacturing and rework, as well as carbon caps and trade-credit systems for data collection, yielding 45 and 32 research articles, respectively. The review prioritizes respected publications of peer-reviewed journals papers for reliable results were examined. A review of the literature suggested that future research should concentrate on stochastic modelling. The emphasis has been placed on identifying future study gaps that will aid in the development of most relevant models. The current work will serve as a guideline for selecting the suitable mathematical technique(s) and methodology(s) in various situations involving deteriorating items. The current analysis examined 42 research papers on deteriorating inventory modelling accessible in the literature to characterize its current state and indicate probable future directions. Future research needs have also been identified. This comprehensive study is firmly believed to fill a knowledge gap on deteriorating inventory and support in the formulation of appropriate methods for the creation of a successful and effective inventory control system for deteriorating products.Verma, P.; Mishra, VK. (2023). Inventory Optimization of Deteriorating Items: A Comprehensive Review of Carbon-Control Policies and Their Impact on Shelf Life, Greening Effects, and Rework Policies. WPOM-Working Papers on Operations Management. 15(1):39-56. https://doi.org/10.4995/wpom.20268395615

An integrated approach to value chain analysis of end of life aircraft treatment

Dans cette thèse, on propose une approche holistique pour l’analyse, la modélisation et l’optimisation des performances de la chaîne de valeur pour le traitement des avions en fin de vie (FdV). Les recherches réalisées ont débouché sur onze importantes contributions. Dans la première contribution, on traite du contexte, de la complexité, de la diversité et des défis du recyclage d’avions en FdV. La seconde contribution traite du problème de la prédiction du nombre de retraits d’avions et propose une approche intégrée pour l’estimation de ce nombre de retraits. Le troisième et le quatrième articles visent à identifier les parties prenantes, les valeurs perçues par chaque partenaire et indiquent comment cette valeur peut affecter les décisions au stade de la conception. Les considérations relatives à la conception et à la fabrication ont donné lieu à quatre contributions importantes. La cinquième contribution traite des défis et opportunités pouvant résulter de l’application des concepts de la chaîne logistique verte, pour les manufacturiers d’avions. Dans la sixième contribution, un outil d’aide à la décision a été développé pour choisir la stratégie verte qui optimise les performances globales de de toute la chaîne de valeur en tenant compte des priorités et contraintes de chaque partenaire. Dans la septième contribution, un modèle mathématique est proposé pour analyser le choix stratégique des manufacturiers en réponse aux directives en matière de FdV de produits comme le résultat des interactions des compétiteurs dans le marché. La huitième contribution porte sur les travaux réalisés dans le cadre d’un stage chez le constructeur d’avions, Bombardier. Cette dernière traite de l’apport de « l’analyse du cycle de vie » au stade de la conception d’avions. La neuvième contribution introduit une méthodologie d’analyse de la chaîne de valeur dans un contexte de développement durable. Finalement, les dixième et onzième contributions proposent une approche holistique pour le traitement des avions en FdV en intégrant les concepts du « lean », du développement durable et des contraintes et opportunités inhérentes à la mondialisation des affaires. Un modèle d’optimisation intégrant les modèles d’affaires, les stratégies de désassemblage et les structures du réseau qui influencent l’efficacité, la stabilité et l’agilité du réseau de récupération est proposé. Les données requises pour exploiter le modèle sont indiquées dans l’article. Mots-clés: Fin de vie des avions, analyse de la chaîne de valeurs, développement durable, intervenants.The number of aircrafts at the end of life (EOL) is continuously increasing. Dealing with retired aircrafts considering the environmental, social and economic impacts is becoming an emerging problem in the aviation industry in near future. This thesis seeks to develop a holistic approach in order to analyze the value chain of EOL aircraft treatment in the context of sustainable development. The performed researches have led to eleven main contributions. In the first contribution, the complexity and diversity of the EOL aircraft recycling including the challenges and problem context are discussed. The second contribution addresses the challenges for estimation of retired aircrafts and proposes an integrated approach for prediction of EOL aircrafts. The third and fourth contributions aim to identify the players involved in EOL recycling context, values perceived by different shareholders and formulate that how such value can affect design decisions. Design stage consideration and manufacture’s issues are discussed and have led to four main contributions. The fifth contribution addresses the opportunities and challenges of applying green supply chain for aircraft manufacturers. In the sixth contribution, a decision tool is developed to aid manufactures in early stage of design for their green strategy choices. In the seventh contribution, a mathematical model is developed in order to analyze the strategic choice of manufacturers in response to EOL directives as the result of the interaction of competitors in the market. An internship project has been also performed in Bombardier and led to the eighth contribution, which addresses life cycle approach and incorporating the sustainability in early stage of design of aircraft. The ninth contribution introduces a methodology for analyzing the value chain in the context of sustainable development. Finally, the tenth and eleventh contributions propose a holistic approach to EOL aircraft treatment considering lean principals, sustainable development, and global business environment. An optimization model is developed to support decision making in both strategic and managerial level. The analytical approaches, decision tools and step by step guidelines proposed in this thesis will aid decision makers to identify appropriate strategies for the EOL aircraft treatment in the sustainable development context. Keywords: End of life aircraft, value chain analysis, sustainable development, stakeholders

Sustainable supply chain management towards disruption and organizational ambidexterity:A data driven analysis

Balancing sustainability and disruption of supply chains requires organizational ambidexterity. Sustainable supply chains prioritize efficiency and economies of scale and may not have sufficient redundancy to withstand disruptive events. There is a developing body of literature that attempts to reconcile these two aspects. This study gives a data-driven literature review of sustainable supply chain management trends toward ambidexterity and disruption. The critical review reveals temporal trends and geographic distribution of literature. A hybrid of data-driven analysis approach based on content and bibliometric analyses, fuzzy Delphi method, entropy weight method, and fuzzy decision-making trial and evaluation laboratory is used on 273 keywords and 22 indicators obtained based on the experts’ evaluation. The most important indicators are identified as supply chain agility, supply chain coordination, supply chain finance, supply chain flexibility, supply chain resilience, and sustainability. The regions show different tendencies compared with others. Asia and Oceania, Latin America and the Caribbean, and Africa are the regions needs improvement, while Europe and North America show distinct apprehensions on supply chain network design. The main contribution of this review is the identification of the knowledge frontier, which then leads to a discussion of prospects for future studies and practical industry implementation

Integrating community, education, and global sustainability: The Vash Recycling Model.

Action research engages researchers and communities in iterative, reflective inquiry to address issues and solve problems with the support of data analysis. The study was structured by and analyzed using the prototype Vash Recycling Model (VRM). For three years, January 2005 through December 2007, this study engaged textiles, apparel, and merchandising students at West Virginia University in collaboration with The Mission, a homeless shelter in Clarksburg, in a joint recycling project. The VRM, found to be an effective guide in textiles and apparel recycling, assisted environmental sustainability, and in 2007 eliminated 679,271 pounds of waste from the landfill while generating {dollar}101,824.21 to support organizational stability. This effort is critical as textiles and apparel processes and practices negatively impact land, water, and energy resources worldwide. Further testing in various geographical locations, with different populations, and with other recyclables could extend model utility and reinforce global sustainability efforts

Moving E-Waste Management into the 21st Century: Protecting Health and Wealth from the Dangers of Electronic Waste

Thesis advisor: Michael CermakElectronic waste (e-waste) is being generated faster than ever, threatening the health of people at home and abroad. This paper advocates for improvements in e-waste management that increase environmental protection in innovative ways that also benefit workers. It reviews what is being done around the world in response to the problem and then introduces suggestions on how public and private actors can cooperate to achieve better results, particularly within the United States. The paper begins by examining the successes and failures of extended producer responsibility (EPR) regulations in Europe, the United States, China, and Japan. It then goes on to advocate for a system combining EPR with a refundable deposit to encourage consumer-driven increases in return rates. If people could receive five to ten dollars for recycling their old cell phone or laptop, far fewer would end up in landfills. The paper culminates with an examination of how the idea of “green-collar jobs” can apply to ewaste management. It examines non-college training programs to prepare people to work in this industry and bring them out of poverty. Several reports have discussed the e-waste issue and its policy implications but this will be the first that brings in the labor aspect.Thesis (BA) — Boston College, 2009.Submitted to: Boston College. College of Arts and Sciences.Discipline: College Honors Program.Discipline: International Studies Honors Program.Discipline: International Studies

Sustainable Industrial Engineering along Product-Service Life Cycle/Supply Chain

Sustainable industrial engineering addresses the sustainability issue from economic, environmental, and social points of view. Its application fields are the whole value chain and lifecycle of products/services, from the development to the end-of-life stages. This book aims to address many of the challenges faced by industrial organizations and supply chains to become more sustainable through reinventing their processes and practices, by continuously incorporating sustainability guidelines and practices in their decisions, such as circular economy, collaboration with suppliers and customers, using information technologies and systems, tracking their products’ life-cycle, using optimization methods to reduce resource use, and to apply new management paradigms to help mitigate many of the wastes that exist across organizations and supply chains. This book will be of interest to the fast-growing body of academics studying and researching sustainability, as well as to industry managers involved in sustainability management

PROCEEDINGS 5th PLATE Conference

The 5th international PLATE conference (Product Lifetimes and the Environment) addressed product lifetimes in the context of sustainability. The PLATE conference, which has been running since 2015, has successfully been able to establish a solid network of researchers around its core theme. The topic has come to the forefront of current (political, scientific & societal) debates due to its interconnectedness with a number of recent prominent movements, such as the circular economy, eco-design and collaborative consumption. For the 2023 edition of the conference, we encouraged researchers to propose how to extend, widen or critically re-construct thematic sessions for the PLATE conference, and the paper call was constructed based on these proposals. In this 5th PLATE conference, we had 171 paper presentations and 238 participants from 14 different countries. Beside of paper sessions we organized workshops and REPAIR exhibitions

Implementation of European Union environmental policy : the case of the Packaging Waste Directive

This thesis provides a critical review of the processes shaping the implementation of European Union (EU) environmental policy. It focuses on two aspects of this dynamic, the interpretation of EU law by Member States and the use of legislative and price-based policy instruments to achieve policy objectives. The overall aim of the study is to examine the extent to which price-based regulation can contribute to the EU's policy objective of sustainable development. The focus for the research is the formulation of the Packaging and Packaging Waste Directive and its implementation in two Member States, Britain and Germany. A variety of research methods were employed, including literature and document searches, personal correspondences, telephone interviews, and postal surveys. The latter stage included a survey of British and German businesses affected by national packaging waste legislation. The first major finding was that the methods used by Member States to implement EU requirements are a major determinant of the sustainability outcomes achieved. By adopting command-and-control legislation and punitive environmental charges, Germany has achieved high recycling rates and significant reductions in packaging consumption. Britain's market-led approach has struggled to achieve its environmental targets but has produced a relatively cost-efficient recycling system. However, the second major finding was that environmental charges have not altered industry behaviour significantly. Whilst German firms were found to be more actively involved in preventative waste management than their British counterparts, this has been brought about primarily by legislative provisions and the readiness of national authorities to resort to constrictive regulation. The main contribution of price-based regulation has instead been the generation of hypothecation revenue for pollution control. From these findings, a conceptual model outlining the sustainability outcomes produced by legislation and price-based regulation is developed and discussed. From this evidence, it is concluded that the use of price-based regulation alongside state-determined implementation has led to some divergence in the sustainability outcomes achieved by EU environmental law. Moreover, the economic approach to environmental problems does little to resolve the fundamental conflicts of priorities between the EU's environmental agenda and its other policy domains. Some options for greater co-ordination of economic instruments at the EU level are suggested and evaluated. The thesis therefore provides a wide-ranging analysis of the practical application of price-based environmental regulation. Its primary contribution is that it assesses how political and practical issues combine to influence the implementation of environmental policy. Furthermore, by assessing EU policy in terms of its contribution to sustainable development, the study has sought to provide a holistic examination of the forces determining the success of the EU's environmental programme