Analysis of the supply chain is necessary to improve performance. For this reason, supply chain management (SCM) has received a lot of attention recently and supply chain design (SCD) is a concept that forms an integral part of the adoption and implementation of SCM. Effective SCD contributes towards better supply chain integration (SCI) which, in turn, contributes towards improved supply chain performance. The focus of this study is on the analysis of SCD practices. Designing the supply chain structure is a complex and demanding undertaking that needs to be aligned with the needs of the supply chain’s end customers, because their needs ultimately have to be satisfied. This study proposes a conceptual framework that has been developed from literature to assist organisations in the analysis of their SCD practices, with the aim of improving supply chain performance. The conceptual framework was exploratively tested by means of empirical research to determine whether it can be used as an assessment tool to assess the SCD practices of organisations. The study concluded that the conceptual framework that was developed in this study can be used as an assessment tool with which organisations can analyse their SCD practices. / Business Management / D. Com. (Business Management)

Wiss. Hochsch. für Unternehmensführung, Diss.--Vallendar, 2004.

Le supply chain management fait l'objet d'une attention particulière de la part des entreprises et des chercheurs notamment en sciences de gestion. Il s'articule autour de la mutualisation de ressources et des compétences de chaque membre de la supply chain et la synergie qui subsiste entre eux afin de créer collectivement une valeur supérieure à la somme des valeurs créées séparément par chacun. Cette alliance, qui nécessite la coopération collective dans la création et le partage équitable de la valeur, est caractérisée par des comportements opportunistes qui entraînent des défaillances comme l'effet Bullwhip. Ainsi, notre objectif est d'analyser ces comportements afin de comprendre leur dynamique au sein de la supply chain. A cet égard, nous nous appuyons sur la perspective des dilemmes sociaux pour proposer deux mécanismes : un mécanisme motivationnel (partage de l'identité de la supply chain) et un mécanisme structurel (investissement dans les ressources relationnelles) pour à la fois réduire et décourager l'opportunisme. Afin d'appuyer notre raisonnement, ces mécanismes sont articulés pour créer un capital social qui, en facilitant le supply chain management, permet d'améliorer la performance de la supply chain. Cela a donné lieu à la conception d'un modèle intégrateur de la dynamique sociale de la supply chain. Celui-ci a été validé auprès d'un échantillon de 130 répondants (Responsables supply chain, directeurs logistiques, etc.). Les données collectées ont été analysées tout d'abord par une analyse univariée, suivie d'une analyse en composantes principales afin d'épurer nos échelle de mesure. En second lieu, nous avons fait appel aux modèles d'équations structurelles PLS-PM (régressions aux moindres carrées partiels), pour estimer d'une part, la validité convergente ainsi que la validité discriminante des échelles de mesures, et d'autre part, valider nos hypothèses de recherche relatives aux antécédents et aux conséquences du capital social de la supply chain. Les résultats d'analyse nous ont permis de valider toutes les hypothèses selon lesquelles les deux mécanismes de résolution du dilemme social permettent de développer un capital social au sein de la supply chain qui, en agissant comme un lubrificateur des relations inter-organisationnelle, permet d'améliorer la performance de la supply chain. / Supply chain management is subject of particular interest to professionals and researchers especially in management science. It revolves around the sharing of resources and expertise between supply chain members, and the synergy that exists between them to collectively create value that is more than the sum of the values created separately by each member. This alliance, which requires collective cooperation in the creation and the equitable sharing of the value, is characterized by opportunistic behaviors that lead to failure, as illustrated by the Bullwhip effect. Thus, our objective is to analyze these behaviors in an attempt to understand their dynamics within the supply chain. In this regard, we rely on the perspective of social dilemmas to propose two mechanisms: a motivational mechanism (sharing the identity of the supply chain) and a structural mechanism (investment in relational resources) to discourage and reduce opportunism. To support our reasoning, these mechanisms are articulated to create social capital, facilitating supply chain management, in turn improving supply chain performance. This leads to the design of an integrative model of supply chain social dynamics. This was validated with a sample of 130 respondents (supply chain heads, logistics managers, etc.). The collected data were analyzed first by univariate analysis followed by principal component analysis to refine our scale. Second, we used PLS-PM (partial least squares regression) structural equation models to estimate, on one hand, the convergent and the discriminant validity of the measurement scales validity, and on the other hand, validate our research hypotheses on the antecedents and the consequences of social capital in the supply chain. The results of these analyses have allowed us to validate all the assumptions that the two mechanisms for resolving social dilemma help develop social capital within the supply chain, and act to lubricate inter-organizational relations, allowing improved supply chain performance.

In order to succeed with the Sustainable Development Goals, the mining of minerals will need to not only continue, but increase in the coming years. The extraction of minerals such as gold and cobalt is often associated with human rights violations and the financing of criminal enterprises. This has led to increased pressure on firms to implement effective responsible sourcing practices. While often seen as a major challenge to many firms, if leveraged correctly, responsible sourcing can be turned into significant competitive advantages and increased supply chain visibility. Given the need for more research in this area, the aim of this study is to understand what responsible sourcing practices are used among manufacturing companies so that an approach for responsible sourcing of minerals can be developed. Using a qualitative research design and following a systematic combining approach, interviews with large industrial manufacturers were conducted. Using thematic analysis, this thesis identifies the main drivers, enablers, barriers, and strategies used by manufacturing companies. While the findings show that responsible sourcing is on the agenda for all companies, it is clear that some firms take responsible sourcing more seriously than others. Therefore, it is suggested that firms need to depart from a cost-centric perspective and instead see the benefits and long-term value generated from responsible sourcing. Furthermore, the findings suggest that some companies are becoming increasingly aware of the need to know their supply chain, and how responsible sourcing practices can be beneficial by providing supply chain visibility. However, the current practices are limited because they are an inherently static representation of a dynamic system. The implementation of a supply chain digital twin is therefore presented as a potential way for firms to improve their responsible sourcing practices while at the same time gaining substantial business value. / För att lyckas med målen för hållbar utveckling måste brytningen av mineraler inte bara fortsätta, utan även öka under de kommande åren. Utvinning av mineraler som guld och kobolt är ofta förknippad med kränkningar av mänskliga rättigheter och finansiering av kriminella organisationer. Detta har lett till ett ökat tryck på företag att införa effektiva metoder för ansvarsfullt inköp. Även om det ofta ses som en stor utmaning för många företag kan ansvarsfullt inköp, om det används på rätt sätt, omvandlas till betydande konkurrensfördelar och bidra till ökad synlighet i leveranskedjan. Med tanke på behovet av mer forskning på detta område är syftet med den här studien att förstå vilka metoder för ansvarsfullt inköp som används bland tillverkningsföretag, så att ett tillvägagångssätt för ansvarsfullt inköp av mineraler kan utvecklas. Genom en kvalitativ forskningsdesign och enligt en systematisk kombinationsmetod genomfördes intervjuer med stora tillverkande företag. Med hjälp av tematisk analys identifieras i denna avhandling de viktigaste drivkrafterna, möjliggörarna, hindren och strategierna som används av tillverkningsföretag. Resultaten visar att ansvarsfullt inköp står på agendan för alla företag, men det är tydligt att vissa företag tar ansvarsfullt inköp på större allvar än andra. Därför föreslås det att företag måste avvika från ett kostnadsfokuserat perspektiv och istället se fördelarna och det långsiktiga värdet som genereras av ansvarsfullt inköp. Dessutom tyder resultaten på att vissa företag blir allt mer medvetna om behovet av att känna till sin leverantörskedja och hur ansvarsfulla inköpsmetoder kan vara fördelaktiga genom att ge större synlighet i leverantörskedjan. De nuvarande metoderna är dock begränsade eftersom de är en statisk representation av ett dynamiskt system. Implementeringen av en digital tvilling i försörjningskedjan presenteras därför som ett potentiellt sätt för företag att förbättra sina metoder för ansvarsfulla inköp samtidigt som de får ett betydande affärsvärde.

Introduktion- Den miljömässiga varianten av Supply chain management, även kallad Green supply chain management, har som mål att minimera eller eliminera negativ miljöpåverkan. Onödiga transporter innebär negativ miljöpåverkan. Trots transporters påverkan på miljön, finns lite forskning om samband mellan transporter och Green supply chain management. Syftet med studien är därför att utforma en strategi för att uppnå Green supply chain management och minska på onödiga transporter med fokus på osäkerhet, variation och transparens.   Metod- För att möjliggöra ett besvarande av syfte har en fallstudie bedrivits med hjälp av litteratur och ett fallföretag.   Resultat, analys, diskussion och slutsats - Fallföretaget påverkas negativt av osäkerhet, variation och har även brist på transparens i försörjningskedjan. Onödiga transporter genom återkallningar skapas på grund av kvalitetsbristerskapar hinder för en effektiv supply chain management strategi. Ett systematiskt tillvägagångssätt genom PDCA kan hjälpa fallföretaget att skapa en stabil grund och uppnå Green supply chain management. Det är viktigt att Plan-Do-Check-Act bedrivs med god kommunikation för att skapa transparens, hindra osäkerhet och variation. Green supply chain management kan uppnås genom en kombination av ISO 9001, ISO 14001 och Lean. Dessa delar ska bedrivas med Plan-Do-Check-Act för att minska på onödiga transporter. / Introduction- The environmental variant of Supply Chain Management, also known as the Green supply chain management, aims to minimize or eliminate negative environmental impacts.  Unnecessary transports are a negative environmental aspect and means negative environmental impact. Although transports affect the environment, there is little research on the relationship between transport and Green supply chain management. The purpose of the study is therefore to design a strategy for achieving Green supply chain management and reduce unnecessary transport with a focus on uncertainty, variability and transparency. Method- To enable the answering of purpose, a case study conducted with the help of literature and a case company. Results- The case company is negatively affected by uncertainty, variety, and also by a lack of transparency in the supply chain. Unnecessary transportations through recalls are created because of quality defects. This creates obstacles for a supply chain management strategy to be more effective. A systematic approach by Plan-Do-Check-Act can help the case company to create a stable basis and achieve green supply chain management. It is necessary to conduct Plan-Do-Check-Act with good communication in order to create transparency, prevent uncertainty and variation. Green supply chain management can be achieved through a combination of ISO 9001, ISO 14001 and Lean. These parts should be conducted with PDCA, which can reduce unnecessary transportation.

It has been argued for the past years that one of today’s main important factors for gaining competitive advantage is to implement CSR activities. There have been many studies showing the many benefits CSR have, not only to the organizations but also to society and the environment. However, CSR does not only concern the organization itself but also ensuring that the social and environmental behaviour is accomplished throughout the whole supply chain. Larger firms have the ability to implement and focus on several tasks at once, while small and medium-sized enterprises are struggling with limited resources and cannot afford any mistakes. This study is focusing on how SMEs with limited resources implement CSR within the supply chain and what difficulties they experience, since CSR is often seen as a complex and resource based issue. A case study was conducted at a SME in a B2B context and the study is based on a qualitative approach, with empirical data gathered from five in-depth interviews. After the empirical data was analysed it was concluded that by decreasing the supplier base is a way of gaining stronger contact and trust, also centralizing the supplier base in order to decrease transportation and emissions. SMEs with limited resources can outsource duties such as checkups and audits to external companies in order to assure quality and environmental criteria’s. Also, being an SME with limited resources indicates that the employees have to take on multiple roles in order to adapt to all customer and supplier demands, which was shown to be a complexity since obligations such as making a profitable procurement, were often prioritized before CSR. It was also found that the internal CSR communication was a major contributor to the lack of knowledge as well as interest in the subject, CSR is not seen as an obligation if not having anyone responsible for the CSR activities. Lastly, both CSR and digitalization were found to be two crucial keystones for organizational survival on the market.

Humanitarian logistics and relief supply chain management is a relatively new area of investigation which is typically associated with unexpected disasters that require immediate actions and responses. It can be defined as “the process of planning, implementing, and controlling the efficient, cost-effective flow and storage of goods and materials, as well as related information, from point of origin to point of consumption for the purpose of meeting the end beneficiary‟s requirements” (Thomas, 2005).In both man-made and natural disaster relief processes, humanitarian logistics and relief supply chain operations have been hampered by a lack of information and coordination between actors. Especially in sudden-onset disasters, humanitarian logistics and relief supply chain teams have to be deployed in situations with destabilized infrastructure and with very limited knowledge about the situation at hand (Beamon 2004, Long and Wood 1995, Tomasini and Van Wassenhove 2004).This lack directly affects effective performance in terms of validity and reliability enhancement in which an adapted resiliency management in relief supply chain strategies could offer a solution to cover the problem.The purpose of study ahead is to underline the beneficial advantages offered by using resiliency methods in humanitarian logistics and relief supply chain operations, and enriching the existing benefits that relief chain management teams through the humanitarian logistics techniques have brought to satisfy the survival needs.In fact, the end result of the research will be in both fields of humanitarian logistics and relief supply chain management, and the use of resiliency theories to overcome on barriers and difficulties during relief and aid operations.

<div>As the manufacturing and healthcare systems becomes more complex, efficiently managing these systems requires cooperation and coordination between different parties. This dissertation examines the coordination issues in a supply chain problem and diagnostic decision making in the healthcare system. Below, we provide a brief description of the problem and results achieved. </div><div> </div><div>With supply chain becoming increasingly extended, the uncertainty in the upstream production process can greatly affect the material flow that aims toward meeting the uncertain demand at the downstream. In Chapter 2, we analyze a two-location system in which the upstream production facility experiences random capacities and the downstream store faces random demands. Instead of decomposing the profit function widely used to treat multi-echelon systems, our approach builds on the notions of stochastic functions, in particular, the stochastic linearity in midpoint and the directional concavity in midpoint, which establishes the concavity and submodularity of the profit functions. In general, it is optimal to follow a two-level state-dependent threshold policy such that an order is issued at a location if and only if the inventory position of that location is below the corresponding threshold. When the salvage values of the ending inventories are linear, the profit function becomes decomposable in the inventory positions at different locations and the optimal threshold policy reduces to the echelon base-stock policy. The effect of production and demand uncertainty on inventory levels depends critically on whether the production capacity is limited or ample in relation to the demand. Only when the capacity is about the demand, the upstream facility holds positive inventory; otherwise, all units produced are immediately shipped to the downstream. We further extend our analysis to situations with general stochastic production functions and with multiple locations.</div><div> </div><div> </div><div>In Chapter 3, we examine the two-stage supply chain problem (described in Chapter 2) under the decentralized control. We consider two scenarios. In the first scenario, the retail store does not have any supply information including the inventory level at the manufacturing facility. We show that the upstream and downstream can be dynamically coordinated with proper transfer payment defined on local inventories and their own value function in the dynamic recursion. In the second scenario, the demand distribution is unknown to the manufacturing facility as well as the retail store does not know the supply information. We characterize the optimal transfer contracts under which coordination can be achieved, and propose an iterative algorithm to compute the optimal transfer contracts in the decentralized setting. The total profit of the decentralized system under our algorithm is guaranteed to converge to the centralized optimal channel profit for any demand and supply distribution functions. </div><div> </div><div>In Chapter 4, we provide a case study for the framework developed in [1]. The authors study the evaluation and integration of new medical research considering the operational impacts. As a case study, we first describe their two-station queueing control model using the MDP framework. We then present the structural properties of the MDP model. Since multiple classes of patients are considered in the MDP model, it becomes challenging to solve when the the number of patient classes increases. We describe an efficient heuristic algorithm developed by [1] to overcome the curse of dimensionality. We also test the numerical performance of their heuristic algorithm, and find that the largest optimality gap is less than 1.50% among all the experiments. </div><div> </div>

Univ., Diss--Marburg, 2007.

Zugl.: Marburg, Univ., Diss., 2008