Temporary migrant workers and circular migration constitute a growing global phenomenon as the management of migration becomes increasingly important to policymakers. This thesis takes academic discussions on citizenship and migration as its starting point, and examines the role of employers in terms of defining temporary migrant workers and their role in the Swedish labour market. The concept of moral economy is applied in particular to analyse the justifications and negotiations through which working conditions of migrant workers, and their role in local and transnational economies, are established and contested. The role of capital in migration management is studied through ethnographic fieldwork and through interviews with managers in the Swedish wild berry and IT industries; two very different industries that are, however, both shaped by particular structures of seasonal labour and international outsourcing and that increasingly rely on temporary foreign workers from Thailand and India respectively. The conceptualisation of supply chains in these industries offers a particular framework through which relations, as well as management discourses, can be analysed. The study explores how notions of circularity, nation, cultural difference, and transnational economic difference, are managed by private sector actors. It also explores how managers relate to public discourse and emotions in the face of global economic restructuring and changing citizenship, which situates temporary migrants as part of, yet different from, Swedish labour. / Temporära migrantarbetare och cirkulär migration utgör ett växande globalt fenomen till följd av intresset bland regeringar och myndigheter att styra genom sk ”managed migration”. Denna avhandling tar avstamp i forskning om medborgarskap och migration för att undersöka vilken roll arbetsgivare får när det gäller att definiera tillfälliga migrantarbetare och deras roll på den svenska arbetsmarknaden. Begreppet moralisk ekonomi används för att lyfta fram och analysera de praktiker genom vilka migrantarbetarnas arbetsvillkor förhandlas och rättfärdigas, samt hur deras roller i lokala och transnationella ekonomier befästs eller förändras. Ekonomins roll i migrationshantering studeras i denna avhandling genom etnografiskt fältarbete och intervjuer med chefer inom den svenska bärindustrin samt IT industrin; två mycket olika industrier som dock båda struktureras av säsongsarbete respektive internationell outsourcing, och som alltmer använder tillfällig utländsk arbetskraft från Thailand respektive Indien. Genom begreppet utbudskedjor (supply chains) möjliggörs en analys av de relationer, samt de managementdiskurser, som påverkar dessa industrier. Avhandlingen utforskar hur föreställningar om cirkularitet, nation, kulturella skillnader, samt transnationella ekonomiska skillnader, förhandlas av aktörer inom näringslivet. Vidare diskuteras hur chefer relaterar till de diskurser och emotioner som en global ekonomisk omstrukturering och ett förändrat medborgarskap ger upphov till, vilket positionerar tillfälliga migrantarbetare som en del av, men ändå annorlunda än, svensk arbetskraft.

Aucune loi internationale n’a su réagir à la fragmentation de la production transnationale jusqu’à présent pour protéger les travailleurs contre le travail forcé. En réponse à ce phénomène, le droit de la responsabilité sociale et le devoir de vigilance des entreprises se sont développés afin d'accroître l'imputabilité des entreprises transnationales envers les impacts sociaux de leurs activités tout particulièrement le long de leur chaîne de valeur. Jusqu'à récemment, le devoir de vigilance était surtout soutenu par des normes internationales à caractère volontaire et par l'autorégulation des entreprises (Kerr, Janda et Pitts, 2009). Depuis peu, quelques États ont légiféré afin d'augmenter la portée et l'efficacité du devoir de vigilance en ce qui concerne le respect des droits fondamentaux des travailleurs et la protection de l’environnement en France par le biais de « plan de vigilance » ou par rapport à l’élimination du travail forcé en Californie et au Royaume-Uni. Ces lois obligent les entreprises à produire des rapports expliquant les relations et les conditions de travail des ouvriers le long de la chaîne de valeur. En comparaison, au Canada, le devoir de vigilance s'appuie sur des développements jurisprudentiels dont la portée est incertaine (Drouin, 2016). Trois modèles d'encadrement de ce devoir émergent alors: un modèle jurisprudentiel et deux modèles législatifs. L’objectif de ce mémoire est d’évaluer le potentiel du devoir de vigilance à inciter les entreprises transnationales à mieux réparer l’utilisation du travail forcé dans leur chaîne de production pour les victimes. Les trois modèles d’encadrement qui seront analysés sont le modèle jurisprudentiel du Canada, le modèle législatif général de la France et le modèle législatif visant spécifiquement l’abolition du travail forcé de la Californie. Les questions auxquelles nous tenterons de répondre sont les suivantes : Le renforcement du devoir de vigilance permet-il de réparer l’utilisation du travail forcé dans les chaînes de production transnationales? Quels éléments permettent d’accroître l’accès à la réparation pour les victimes de travail forcé dans les chaînes de production transnationale? / International law concerning the use of forced labour in global production chains has yet to be enacted. In response to this phenomenon, corporate social responsibility law and the principle of due diligence have been developed to increase transnational businesses’ accountability towards the social impacts of their activities along the supply chain. Until recently, due diligence was mainly supported by voluntary international norms and by business’ selfregulation mechanism (Kerr, Janda and Pitts, 2009). A few States recently passed legislation that a increases the scope and the efficiency of due diligence. The efforts of France on the matter have focused on the respect of workers’ fundamental rights and of the environment while similar legislative endeavours in California and in the UK have concerned themselves with the specific issue of forced labour. In comparison, in Canada, due diligence is based on jurisprudential developments with an uncertain scope (Drouin, 2016). Three frameworks of due diligence emerge: two legislative models and one jurisprudential models. This thesis seeks to assess the potential of the duty of diligence principle in enticing transnational corporations to remedy the use of forced labour through their supply chains. Three models will be evaluated: the Canadian jurisprudential model, the French general legislative model and the Californian legislative model specifically targeting the abolition of forced labour. The questions we will seek to answer are the following: Does the enhancement of the duty of diligence enable victims of forced labour in transnational production chains to obtain remedies? What are the key elements promoting access to remedy for victims of forced labour in transnational production chains?

Abstract Background and problem statement: Since December 2019 the world have been largely affected by the new corona virus (Covid-19). The corporate industry has experienced the consequences of whole nations isolating themselves to contain the virus. The complex networks of today’s supply chains further complicate this situation. This has challenged companies expertise and preparedness within areas of supply chain risk management and further within procurement. Purpose: This study aims to identify how companies within the Swedish manufacturing industry work with risk management in supply chains mainly targeting risk management within procurement. Furthermore, the study aims to identify how these companies have been affected by the pandemic outbreak and how they have handled the situation by using risk management strategies. Based on this purpose two research questions were constructed. Method: A qualitative study design with some contribution from the quantitative study design have been carried out through semi-structured interviews. By analysing secondary data such as literature and peer-reviewed articles a theoretical framework was constructed. Results: Supply chain risk management is not formalized as a term within the industry, although it is safe to say that companies work with activities and strategies within the area. Strategies that proved effective during the pandemic outbreak were safety stock, geographical placement of suppliers, risk identification and risk analysis. Flexibility within the supply chains also proved to be vital to the success of the companies during this time.

Growing environmental problems have led to increasing pressure on companies to improve their environmental performance. This means that also supply chains must become greener, which has contributed to new challenges when it comes to green collaboration and trust. Research has suggested marketing as a tool to tackle these challenges, but how to use marketing to address these concerns has yet to be explored further. The focus of this thesis is thereby to explore and clarify the possibilities to use green industrial marketing as a tool to meet these new supply chain challenges. In line with that, the overarching aim of the thesis is to explore and advance the understanding of green industrial marketing, with the underlying aim of merging the fields of green marketing and green supply chains. There is also the goal of contributing to companies’ knowledge about the field and thus possibly inspire improvements in green industrial marketing and green supply chain practices. These aims are met by answering two research questions. The first research question regards the practice of green industrial marketing, and how this practice has developed over time. The second research question revolves around what strategies, placing an emphasis on trust, can be identified in companies working in green industrial marketing and how these strategies can improve green supply chain collaboration. The literature review focuses mainly on green industrial marketing, with green marketing, the emergence of green business, industrial marketing, green supply chain management, green marketing strategies, and trust as associated theoretical fields related to green industrial marketing. The study is interpretive and qualitative with a focus on one industry, the Swedish textile service industry, during a 26-year time period. Three sub-studies have been combined to explore the phenomenon of green industrial marketing: a qualitative content analysis, a semi-structured interview study, and a minor case study. The results of this study can improve the understanding of green industrial marketing, both as a practice and theoretical area by describing the strategies, including strategies intended to build trust, that are practiced in markets. A typology of eight identified green industrial trust strategies have been developed. The study also contributes to discussion on the differences between industrial marketing and consumer marketing by clarifying the boundaries of green industrial marketing in relation to green consumer marketing. Among other things, the results of this study show that there is a greater relational focus in green industrial marketing compared to what exists in green consumer marketing. This study also contributes to a merger between the fields of green industrial marketing and green supply chain management by showing how green industrial marketing can contribute to improved collaboration within green supply chains in four ways. The first way is to convey different types of environmental information and green market positions, the second is to improve the integration and coordination of green supply chains, the third is to facilitate supplier evaluations, and the fourth is to build trust. / Växande miljöproblem har lett till ökad press på företag att förbättra sitt miljöarbete. Det innebär att även leverantörskedjor måste bli mer miljövänligt. Forskning har föreslagit marknadsföring som ett verktyg att tackla dessa utmaningar med, men har ännu inte fördjupat sig i hur man använder marknadsföringen för att ta itu med problemen. Fokus för denna avhandling är därför att utforska och klargöra möjligheterna att använda så kallad grön industriell marknadsföring som ett verktyg för att möta dessa nya utmaningar i leverantörskedjan. Det övergripande syftet med avhandlingen att utforska och främja förståelsen av grön industriell marknadsföring. Ett underliggande syfte att sammanföra forskning om grön marknadsföring och gröna leveranskedjor. Det finns också ett mål att bidra till företags kunskap om området och på så sätt inspirera till förbättringar av deras verksamheter. Dessa syften uppnås genom att svara på två forskningsfrågor. Den första forskningsfrågan handlar om praktiken av grön industriell marknadsföring och hur den har utvecklats över tid. Den andra forskningsfrågan kretsar kring vilka strategier, med tonvikt på tillit, som kan identifieras i företag som arbetar med grön industriell marknadsföring och hur dessa strategier kan förbättra grönt samarbete i leverantörskedjan. Resultaten från den här studien kan förbättra förståelsen av grön industriell marknadsföring, både som praktik och teoretiskt område, genom att beskriva de strategier, inklusive strategier avsedda att bygga tillit, som praktiseras på marknader. En typologi med åtta identifierade gröna industriella tillitsstrategier har utvecklats baserad på tidigare litteratur och företagens praktik. Studien bidrar också till diskussion om skillnaderna mellan industriell marknadsföring och konsumentmarknadsföring. Resultaten visar bland annat att det finns ett större relationellt fokus inom grön industriell marknadsföring jämfört med vad som finns inom grön konsumentmarknadsföring.

<p>As society works to reduce its reliance on fossil fuels, the demand for renewable energy and clean energy technologies continues to grow rapidly. Lessons learned from the ongoing electronics waste crisis necessitate closing material loops to secure supply chains and redirect valuable resources away from the landfills.</p><p> </p><p>Inspired by the principles of industrial ecology, the circularization of renewables is demonstrated by applying the notion of Life Cycle Symbiosis (LCS), an extension of Industrial Symbiosis (IS). This is achieved by identifying waste streams that may have value as potential raw material/feedstock and the subsequent development of industrial synergies in the context of end of life (EoL) photovoltaics (PVs). Per metric ton of EoL PVs, the avoided global warming potential (GWP) and ecotoxicity impacts were calculated to be as high as 2750 kg CO₂ eq and 32,000 CTUe respectively, while the water savings and electricity savings were over 37,000 m³ and 3600 MJ. Building upon this work, a hybrid multi objective optimization (MOO) method was proposed to support the creation of industrial synergistic networks or eco industrial parks (EIPs). The hybrid method addresses the challenges associated with the early design and development stages of EIPs (supply, demand, potential synergies, etc.), and also those in relation to considering multiple conflicting sustainability objectives.</p><p> </p><p>Apart from addressing material scarcity, rising pollution levels and exposure to toxins, recovery and circularization may also contribute towards stabilizing feedstock prices. Supply chains for renewables and clean energy technologies are brittle because of risks associated with possible supply deficits stemming from complex geo-political situations and oligopolies. This can translate to price fluctuations among high-value, critical materials on which clean energy technologies rely. In order to ensure a smooth transition to a clean energy technologies, and one that is also sustainable, it is vital to assess the impact of these very complexities on the market dynamics for the critical material feedstocks. To this end, a system dynamics model has been developed to capture price trends of rare earth elements (REEs) used in EVs under varying market scenarios. The proposed model aims to aid automobile manufacturers in developing effective business strategies as they work towards electrifying their vehicle fleets.</p><p>This thesis reports on the development of some strategies rooted in industrial ecology to prevent renewables and clean energy technologies from themselves becoming environmental liabilities in the future.</p>

The dairy industry is a complex system that involves many stakeholders and processes, from production to distribution. To measure and improve the performance of this system, a comprehensive and reliable Performance Measurement System (PMS) is needed. A PMS is a tool that helps to evaluate the efficiency and effectiveness of supply chain operations. One of the components of a PMS is the key performance indicators (KPIs), which reflect the performance of specific aspects of the supply chain. This thesis explores how KPIs can be used to enhance logistics performance in the dairy industry. The research is based on a single case study of a global company that operates in the dairy sector, which faces challenges such as high competition, customer demand variability, and food waste. The research uses a mix of literature review, interviews, and data analysis to identify and evaluate the relevant KPIs for logistics performance, as well as their interrelationships and impacts. The research applies the interpretive structural modeling (ISM) method to develop a hierarchical model of the KPIs and their causal relationships. The interpretive structural model of the indicators shows that the current indicators commonly used in the dairy industry today are not suitable for measuring performance, the indicators do not affect the current performance significantly but rather reflect the. This paper proposes a methodology for qualitatively evaluating performance measures, based on the integration of the ISM approach, the MICMAC analysis, and the seven criteria of a KPI. The ISM approach is a technique for identifying and analyzing the interrelationships among elements of a complex system. By applying this methodology, organizations and researchers can assess the suitability and importance of a set of KPIs. / Mejeriindustrin är ett komplext system som involverar många intressenter och processer, från produktion till distribution. För att mäta och förbättra systemets prestanda behövs ett heltäckande och tillförlitligt system för prestationsmätning (PMS). Ett PMS är ett verktyg som hjälper till att utvärdera effektiviteten i leveranskedjans verksamhet. En av komponenterna i ett PMS är nyckeltal (KPI:er), som är mått som återspeglar prestandan för specifika aspekter av leveranskedjan. Denna studie syftar till att undersöka hur KPI:er kan användas för att förbättra logistiken inom mejeriindustrin. Forskningen baseras på en fallstudie av ett globalt företag som är verksamt inom mejerisektorn, som står inför utmaningar som hög konkurrens, varierande kundefterfrågan och matsvinn. Forskningen använder en blandning av litteraturstudier, intervjuer och dataanalys för att identifiera och utvärdera relevanta KPI:er för logistikprestanda, samt deras inbördes relationer och påverkan. Forskningen tillämpar metoden ISM (Interpretive Structural Modeling) för att utveckla en hierarkisk modell av KPI:erna och deras orsakssamband. Den tolkande strukturella modellen av indikatorerna visar att de nuvarande indikatorerna som vanligtvis används i mejeriindustrin idag inte är lämpliga för att mäta prestanda, indikatorerna påverkar inte den nuvarande prestationen avsevärt utan återspeglar snarare resultaten. I denna rapport föreslås en metod för att utvärdera prestationsmått på ett kvalitativt sätt, baserat på integrationen av ISM-metoden, MICMAC-analysen och de sju kriterierna för en KPI. ISM-metoden är en teknik för att identifiera och analysera de inbördes relationerna mellan olika delar i ett komplext system. Genom att tillämpa denna metod kan organisationer och akademiker utvärdera lämpligheten och vikten av en uppsättning eller en KPI.

<p>  </p> <p>The trucking industry seems to be resistant to electrification, even though truck electrification can lead to large societal as well as user benefits. This dissertation develops a framework to inform policy making and enhance electric vehicle (EV) preparedness in the trucking industry through the study of two interrelated elements: (a) the adoption of electric trucks and (b) the appropriate implementation of electric truck technology. These two elements cover the user perspective, which is not adequately studied, and the agency perspective, which is pivotal in the decision-making process. Specifically, this study addressed the following research questions: (i) which factors affect the purchase decisions of truck fleet managers or owners for electric trucks? (ii) what is the ranking of and interrelationships between the barriers to the adoption of electric trucks? (iii) which location criteria should be considered for the strategic implementation of dynamic wireless charging (DWC) in a freight transportation network and where should this technology be located based on these criteria, and (iv) what is the impact of electric truck adoption on highway revenue and potential of alternative funding mechanisms to recover the revenue loss?</p> <p>For the adoption of electric trucks, a stated preference survey was designed and distributed online to truck fleet managers/owners in the U.S., gathering 200 completed responses. Statistical and multi-criteria decision-making approaches were employed to identify the factors that affect the purchase intentions of truck fleet managers and explore the barriers to electric truck adoption. The results showed that the purchase intentions of truck fleet managers are affected by trucking firm and truck fleet characteristics, behavioral factors/opinions regarding electric trucks, and awareness of innovative charging technologies. Furthermore, electric truck adoption would be accelerated if stakeholders focused on the barriers related to the business model, product availability, and charging time. Additionally, electric truck adopters and non-adopters may not be viewed as one homogenous group, since differences were found in the ranking and interrelationships of barriers to electric truck adoption between these two groups. </p> <p>The implementation of electric truck technology was examined based on the truck fleet managers’ survey, secondary data sources and the case of Indiana, U.S. A multi-criteria decision-making spatial approach was proposed to identify the candidate locations for the deployment of DWC. It was concluded that the most suitable locations for DWC lanes were on interstates, near airports and ports and away from EV charging stations. A data-driven framework was also developed to quantify the impact of electric truck adoption and estimate the optimal fee for each truck to recover the revenue loss. Using the market penetration levels estimated based on the survey data collected, the average annual fuel tax revenue loss for Indiana was approximately $349M. To maintain the same tax revenue per vehicle, annual fees ranging from $969 (in 2021) to $1,243 (in 2035) for single-unit trucks and $6,192 to $7,321 for combination trucks would be needed. To address public relations problems of EV fee implementation, this study also discussed alternative mitigation measures: a vehicle-miles-traveled fee and a pay-as-you-charge fee.</p> <p>In summary, this dissertation contributes to the body of literature by providing significant insights regarding the perspectives of truck fleet managers for electric trucks as well as a comprehensive list of all the location criteria for DWC. The proposed frameworks and study findings can be used by policymakers and other major stakeholders of the EV ecosystem to frame certain strategies to accelerate electric truck adoption, identify the most suitable locations for charging infrastructure, better understand the impact of electric trucks on the highway revenue, and provide the groundwork for developing EV roadmaps.</p>

[ES] Los productos perecederos representan un gran parte de los bienes que se comercializan en el mundo. Éstos productos empiezan a tener un papel más relevante dadas las condiciones de seguridad alimentaria que requiere la humanidad, en el año 2023 la población del planeta superó los 8 mil millones de habitantes, una cifra que presiona aún más el riesgo alimenticio del planeta. La gestión de éste tipo de cadenas de suministros es responsable en parte de la seguridad alimentaria de las personas, actualmente uno (1) de cada tres (3) kilos de comida que se producen en el mundo se pierde o desperdicia. Ésta situación merece un análisis más profundo, y por tanto se requiere dividir el problema en varias partes para saber la conexión del problema. Encontramos que el efecto látigo, un fenómeno que amplifica la demanda aguas arriba de la cadena de suministros, es responsable en cierto modo de ésta pérdida y desperdicio de alimento. Nuestra investigación encontró que existen varias causas que generan el efecto látigo, como la gestión de la demanda, el tiempo de entrega o de reabastecimiento, nivel de deterioro del producto, entre otros. Éstas causas del efecto látigo fueron simuladas en una cadena de 10 retailers, una central de abastos, tres intermediarios rurales y 6 agricultores; con el fin de evidenciar el impacto en el inventario, el desperdicio y el nivel de servicio de una cadena de suministros del banano. Para la simulación diseñamos un modelos de previsión de demanda Prophet, el cual tuvo en cuenta la tendencia y estacionalidad de la demanda del banano, y el tiempo de entrega y de reabastecimiento de los proveedores. Nuestro modelo logró disminuir el efecto látigo en casi una cuarta parte con respecto a un modelo de previsión básico (Naïve), también redujo el inventario en toda la cadena de suministros del banano en casi tres veces con relación al modelo Naïve. Éstos resultados fueron consistentes en todos los escenarios donde se tuvo en cuenta el nivel de desperdicio del banano, cambios en los tiempos de entrega y de reabastecimiento. Nuestro mayor aporte a la investigación fue diseñar un modelo de previsión basado en Prophet, que no se había usado para disminuir el efecto látigo en una cadena de perecederos, evidenciando que el nivel de deterioro del producto afecta en mayor medida el inventario en la cadena de suministros, en comparación con el tiempo de entrega y de reabastecimiento. Los aportes y hallazgos encontrados en la investigación, deben ser ampliados hacia nuevas líneas, que involucren el comportamiento humano como causa del efecto látigo, otro tipo de alimentos que tengan mayor nivel de vida útil, y estructuras de cadenas que tengan variaciones en sus pedidos, tiempos de producción y capacidades organizacionales / [CA] Els productes peribles representen una gran part dels productes venuts al món. Aquests productes comencen a tenir un paper més rellevant donades les condicions de seguretat alimentària que requereix la humanitat. El 2023, la població del planeta va superar els 8.000 milions d'habitants, una xifra que pressiona encara més el risc alimentari del planeta. La gestió d'aquest tipus de cadenes de subministrament és en part responsable de la seguretat alimentària de les persones; actualment es perd o es malgasta un (1) de cada tres (3) quilos d'aliments produïts al món. Aquesta situació mereix una anàlisi més profunda, i per tant cal dividir el problema en diverses parts per conèixer la connexió del problema. Hem trobat que l'efecte fuet, un fenomen que amplifica la demanda aigües amunt de la cadena de subministrament, és una mica responsable d'aquesta pèrdua i malbaratament d'aliments. La nostra investigació va trobar que hi ha diverses causes que generen l'efecte fuet, com ara la gestió de la demanda, el temps de lliurament o reposició, el nivell de deteriorament del producte, entre d'altres. Aquestes causes de l'efecte fuet es van simular en una cadena de 10 minoristes, un centre de subministrament, tres intermediaris rurals i 6 agricultors; per tal de demostrar l'impacte en l'inventari, els residus i el nivell de servei d'una cadena de subministrament de plàtan. Per a la simulació vam dissenyar un model de previsió de la demanda del Profeta, que tenia en compte la tendència i l'estacionalitat de la demanda de plàtan, i el temps de lliurament i reposició dels proveïdors. El nostre model va aconseguir reduir l'efecte fuet en gairebé una quarta part en comparació amb un model bàsic de previsió (Naïve), també va reduir l'inventari a tota la cadena de subministrament de plàtan gairebé tres vegades en comparació amb el model Naïve. Aquests resultats van ser coherents en tots els escenaris on es va tenir en compte el nivell de residus de plàtan, els canvis en els temps de lliurament i reposició. La nostra major contribució a la investigació va ser dissenyar un model de previsió basat en Prophet, que no s'havia utilitzat per reduir l'efecte fuet en una cadena perible, demostrant que el nivell de deteriorament del producte afecta en major mesura l'inventari de la cadena de subministrament. subministraments, en comparació amb el temps de lliurament i reposició. Les contribucions i troballes que es troben a la investigació s'han d'ampliar cap a noves línies, que impliquen el comportament humà com a causa de l'efecte fuet, altres tipus d'aliments que tenen un nivell més alt de vida útil i estructures de cadena que tenen variacions en els seus ordres, temps de producció i capacitats organitzatives / [EN] Perishable products represent a large part of the goods traded in the world. Given the food security conditions required by humanity, these products are beginning to play a more relevant role; in 2023, the world's population exceeded 8 billion inhabitants, putting even more pressure on the planet's food risk. This type of supply chain management is partly responsible for people's food security. One (1) of every three (3) kilos of food produced worldwide needs to be recovered or used. This situation deserves a more profound analysis; therefore, it is necessary to divide the problem into several parts to know the connection of the problem. We found that the bullwhip effect, a phenomenon that amplifies the demand upstream of the supply chain, is responsible in some way for this loss and waste of food. Our research found that several causes generate the bullwhip effect, such as demand management, delivery or replenishment time, and level of product deterioration. These causes of the bullwhip effect were simulated in a chain of 10 retailers, a supply center, three rural intermediaries, and six farmers to demonstrate the impact on a banana supply chain's inventory, waste, and service level. For the simulation, we designed a Prophet demand forecasting model, which considered the trend and seasonality of banana demand and suppliers' delivery and replenishment time. Our model managed to reduce the bullwhip effect by almost a quarter compared to a basic forecasting model (Naïve), and it also reduced inventory in the entire banana supply chain by almost three times compared to the Naïve model. These results were consistent in all scenarios where the level of banana waste, changes in delivery, and replenishment times were considered. Our most significant contribution to the research was to design a forecasting model based on Prophet, which had not been used to reduce the bullwhip effect in a perishable goods chain, showing that the level of product deterioration affects inventory in the supply chain to a greater extent, compared to delivery and replenishment time. The contributions and findings found in the research should be extended to new lines involving human behavior as a cause of the bullwhip effect, other types of foods with a longer shelf life, and chain structures with variations in their orders, production times, and organizational capacities. / Durán Peña, JA. (2024). Diseño de un modelo de previsión de demanda para reducir el efecto látigo en una cadena de suministros de perecederos [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/210911

Die Globalisierung des Agrarhandels führt zu komplexen Lieferketten, was weitreichende Folgen für die Lebensmittelsicherheit haben kann. Entsprechende internationale Vorkommnisse stellen die zuständigen Behörden vor die Herausforderung, Risiken sachgemäß zu managen und zu bewerten. Bei der Analyse von aufgetretenen Problemfällen wurden erhebliche Wissenslücken hinsichtlich der Rolle der Logistik aufgedeckt. Um das Forschungsgebiet der globalen Warenströme abzubilden, wurde anhand einer qualitativen Textanalyse multidisziplinärer Literatur - angelehnt an den Grounded Theory-Ansatz - ein konzeptioneller Bezugsrahmen am Beispiel von Agrarrohstoffen entwickelt. Dieser diente als Grundlage für eine Fallstudie zur empirischen Untersuchung der potentiellen Kontamination von Agrarrohstoffen mit Mykotoxinen. Hierzu wurden Experteninterviews mit 24 Akteuren aus den Bereichen Logistik, Handel, Beschaffung und Richtlinien und Standards durchgeführt. Wir haben verschiedene Ebenen der wichtigsten Konzepte innerhalb (z.B. Logistikprozesse und Hauptakteure) und außerhalb (z.B. Globale Driver) der Warenströme von Agrarrohstoffen bestimmt. Mit Hilfe der Fallstudie konnten wir zudem kritische Dimensionen (z.B. Maßnahmen zur Lebensmittelsicherheit, menschlicher Faktor, Hafenmerkmale) und entsprechende kritische Faktoren für die Lebensmittelsicherheit und ihre Wechselbeziehungen identifizieren. Die Studie zeigt die Notwendigkeit integrativer und nachhaltiger Lösungen, wie die Zusammenarbeit zwischen Wirtschaftsakteuren, als auch mit Behörden, sowie politische Anreize, um z.B. mehr Transparenz und Sorgfalt im Qualitätsmanagement als auch Investitionen in neue Technologien (z. B. Blockchain) im Logistiksektor zu erreichen. Die gewonnenen Erkenntnisse sollten in bestehende und neue Instrumente, die zur Klärung internationaler Lebensmittelsicherheitsvorfälle oder in der Risikofrüherkennung eingesetzt werden und entsprechend der Dynamik des Sektors auf EU- und internationaler Ebene ständig aktualisiert und erweitert werden. / The globalization of agricultural trade leads to complex supply chains, which can have far-reaching consequences for food safety. International food safety incidents are challenging competent authorities to assess and manage food safety risks appropriately. Analysis of respective occurrences revealed substantial knowledge gaps regarding the role of logistics. To map the research area of global commodity flows, a conceptual framework - using agricultural commodities as an example - was developed based on qualitative text analysis of multidisciplinary literature, inspired by the Grounded Theory approach. This served as the foundation for a case study to empirically investigate the potential contamination of agricultural commodities with mycotoxins. For such purpose, expert interviews were conducted with 24 stakeholders from logistics, trade, procurement, and regulations and standards. We identified different levels of key concepts within (e.g., logistics processes and key actors) and outside (e.g., global drivers) the commodity flows of agricultural commodities. The case study further allowed us to identify critical dimensions (e.g., food safety measures, human factor, port characteristics) and corresponding critical factors for food safety and their interrelationships. The study demonstrates the need for integrative and sustainable solutions, such as collaboration between economic actors, as well as with authorities, policy incentives, for example to achieve more transparency and diligence in quality management, as well as more investments in new technologies (e.g. blockchain) in the logistics sector. The knowledge gained calls to be integrated into existing and new tools used to verify and assess international food safety incidents or in early risk detection, and should constantly be updated and expanded according to the unfolding dynamics of the sector at EU and international levels.

Auch wenn Multichannel-Vertriebsstrategien Gegenstand vieler Untersuchungen sind, befassen sich nur wenige Studien mit ihren Auswirkungen auf Logistik- und Transportorganisation. Die zentralen Fragen lauten daher: Wie verändern sich die Warenströme durch die Einführung des Lebensmittelonlinehandels? Und haben verschiedene Formen von Onlineangeboten unterschiedliche Auswirkungen auf die Warenströme? Für die vorliegende kumulative Dissertation wurden Daten aus Frankreich und Deutschland analysiert. Im Mittelpunkt standen die Auswirkungen des Lebensmittelonlinehandels auf die Lieferkette, einschließlich der letzten Meile. Darüber hinaus war es das Ziel, die Strategien und den logistischen Transport der Distributoren im Hinblick auf den Kontext, in dem sie auftreten, zu verstehen. Die Arbeit bietet eine umfassende Untersuchung der beiden Märkte Deutschland und Frankreich. Die Ergebnisse einer vergleichenden Analyse zeigen, wie unterschiedlich sich die Warenflüsse über die gesamte Supply Chain durch das Angebot von Onlinewaren verändern. Neben der letzten Meile erfahren auch die vorgelagerten Strukturen in der Lieferkette eine Veränderung: I) Neue Standorte in Kundennähe für die Organisation der Onlinelebensmitteldistribution werden erschlossen. II) Eine Dezentralisierung von Distributionsstrukturen findet statt. III) Es entstehen neue Beziehungen zwischen Akteuren der Lieferkette. Die Ergebnisse der Analysen tragen zu einem besseren systematischen Verständnis von Onlinelebensmittelpraktiken bei Forschern und Praktikern bei. / Bien que les stratégies de distribution multicanale fassent l'objet de nombreuses recherches, peu d'études traitent de leur impact sur l’organisation de la logistique et des transports. Par conséquent, notre problématique est la suivante : comment les flux de marchandises évoluent-ils suite à l'introduction de l'épicerie en ligne ? Et quels sont les impacts des différentes formes d'offres en ligne sur les chaines d’approvisionnement ? Pour ce mémoire de synthèse, des données provenant de France et d'Allemagne ont été analysées et comparées. L'accent est mis sur l'impact du commerce d'alimentaire en ligne sur la totalité de la chaîne d'approvisionnement. En outre, l'objectif de ce mémoire est de comprendre les stratégies logistiques et de transport des distributeurs en fonction du contexte géographique dans lequel ils interviennent. La recherche est basée sur un ensemble de méthodes, en mettant l'accent sur les méthodes de la recherche qualitative et les analyses quantitatives complémentaires. Grâce à la comparaison de la situation en France et en Allemagne, et à l'analyse approfondie des acteurs du marché (via des entretiens avec des experts), le mémoire offre une réflexion complète sur les deux marchés. Les résultats des analyses montrent que l'offre des biens alimentaire en ligne modifie le flux des marchandises toute au long de la chaine d’approvisionnement, depuis le traitement des commandes jusqu’à la livraison. En effet : 1) de nouveaux sites pour l'organisation de la distribution alimentaire en ligne sont développés, souvent situés à proximité des clients ; 2) on observe une décentralisation des structures de distribution ; 3) de nouvelles relations entre les acteurs de la chaîne d'approvisionnement apparaissent. Les résultats de ces analyses contribuent à une meilleure compréhension systématique des pratiques de la distribution alimentaire en ligne. / Even though multichannel distribution strategies are the subject of many research studies, few have addressed their impact on logistics and transport organisations. The present research addresses this gap by investigating the central questions: ‘How do commodity flows change through the introduction of online grocery services? Can different configurations of online grocery services, and thus different commodity flows, be observed in France and Germany?’ For this cumulative dissertation, data from France and Germany were analysed. The impact of online grocery sales on supply chains was examined through a comparative analysis, and the relevance of different settings and contextual environments was established. The analyses show that the decision to offer goods online impacts the entire supply chain of the grocer, and the impact differs in France and Germany. Order processing, last-mile delivery and upstream structures in the supply chain are experiencing three fundamental areas of change: I) new locations for the organisation of online food distribution – usually close to the customers – are being developed; II) a decentralisation of distribution structures is taking place; and III) new relationships between actors in the supply chain are emerging. The thesis systematically records and describes adaptation mechanisms and reveals the differences in the supply chain structures compared to the stationary food trade. Based on the structured analysis of two neighbouring but distinct markets, further insights relevant to research and practice could be generated. The results of the analyses contribute to a better systematic understanding of online food practices among researchers and practitioners.