Apresentada atualmente como fundamental para a vantagem competitiva das empresas, a desintegração vertical de processos é uma ação geral que, uma vez adotada, leva a novas formas de relacionamento com fornecedores. Estas novas formas de relacionamento de empresas com fornecedores fazem com que cadeias de suprimento passem a ser estruturadas por meio de vínculos de cooperação contratual, em contraposição à estruturação vertical por meio de vínculos de cooperação hegemônica. Nesta dissertação estabelecem-se primeiramente os conceitos de cadeia de suprimento e de desintegração vertical de processos; analisam-se em seguida as várias formas de relacionamento contratual que uma empresa pode estabelecer com fornecedores e daí deduzem-se critérios de escolha de fornecedores em coerência com o relacionamento que a empresa irá estabelecer com os fornecedores escolhidos. Para submeter a teste esta dedução, realizou-se uma pesquisa em duas empresas do ramo químico, por meio da qual se identificaram os critérios que estas empresas adotam para escolher fornecedores e estabelecer com eles vínculos de relacionamento contratual. Os resultados da pesquisa levam à conclusão de que as empresas pesquisadas estabelecem com seus fornecedores os relacionamentos mais adequados conforme as circunstâncias, mas não ‘o relacionamento ideal’. A dissertação se encerra com proposta de um programa de estudos transdisciplinares sobre a gestão de suprimentos em geral e os relacionamentos cliente-fornecedor em especial. / Put nowadays as basic for the competitive advantage of companies, vertical disintegration of processes is a wide action that, once adopted, gives rise to new forms of relationships with suppliers. These new forms of relationships between firms and their suppliers draw to the structuring of supply chains according to links of contractual co-operation, in contrast to their vertical structuring according to links of hegemonic co-operation. In this dissertation the concepts of supply chain and of vertical disintegration of processes are settled first; following it the various forms of contractual relationship that a firm can set up with its suppliers are scrutinized and then criteria for supplier selection are inferred, consistently with the relationship the firm will set in agreement with the chosen suppliers. In order to submit this inference to a trial, a research was undertaken at two companies that carry business in the chemical branch undertaken, identifying the criteria these companies adopt for supplier selection and for setting up with the chosen ones links of contractual co-operation. The results of the research draw to the conclusion that the researched companies set up with their suppliers the most suitable relationships according to circumstances, but not ‘the ideal relationship’. The dissertation ends with the proposal of a program for transdisciplinary studies concerning supply management broadly and customer-supplier relationships in special.

This dissertation consists of two parts. The first part isabout“Managing buyer-supplier relationships in autoproduction chains ­ a case study of Volvo and its supplierrelationship management”. The second part is about“Managing buyer-supplier relationships in telecom supplychains ­ a case study of Ericsson and its supplierrelationship models in different business situations”. The scope of this study is restricted to supply chains inautomotive and telecommunication industries, where the successof supply processes is dependent on how well a company managesits supply chain with horizontal or vertical integration tofulfill customer demands. The research is carried out as a number of case studies ofbuyer-supplier relationship management in the auto and telecomsupply chains. The aim was to analyze how a company fulfillscustomer demand in the best way through different supplierrelationships, and how and why alternative relationship typesare used in reality. The study is based on the relationship between two focalcompanies and their suppliers. Case study methodology is used,and data is collected from selected cases through interviewsand observations. Analysis is carried out within and acrosscases. From the case interpretation and analysis, conclusionsare drawn as to which strategic level of buyer-supplierrelationship is appropriate for different situations. As a result and in conclusion, a static supplychain-reaction model is built at the end of the Part I. Thestatic model describes the importance of collaborativebuyer-supplier relationships in the product developmentprocess. Based on this model, it is concluded in Part II thatthe most suitable supplier relationship is different fordifferent products. For the same product, the most appropriatebuyer-supplier relationship varies with the product’s lifecycle timing. Therefore, two dynamic buyer-supplierrelationship models under different business conditions and indifferent product life-cycle periods are created in Part II.The models apply to dynamic processes, not to interactingcompany organizations in general. The study increases the knowledge regarding selection of themost appropriate supplier relationships in different businesssituations. Key words:buyer-supplier relationship, sourcingstrategy, supply chain management / <p>Qc 20130827</p>

Despite a general consensus concerning the relevance of supply partnerships to agility, the literature reveals disagreements and contradictions regarding their characteristics and, in particular, their duration. This is, whether partnerships in an agile strategy should be long-term (strategic partnerships) or short-term (agile partnerships). The research joins this debate by investigating the types and characteristics of supply partnerships to achieve agility. The underlying premise of the work is that the type of supply partnership is contingent on the degree of turbulence an agile strategy is designed to face. The research was carried out in the fashion industry, given the relevance of agility in this industry. Specifically, the research focused the supply partnerships developed by the footwear companies in the Macerata-Fermo district, the largest footwear district in Italy. The focus on district companies allow the comparison of several companies sharing a very similar business context, allowing a better control of external variables and increasing the internal validity of the study. The field research consisted of a preliminary survey on agility drivers and agile capabilities in the Macerata-Fermo footwear district, followed by an in-depth investigation on supply partnerships using multiple embedded cases studies. Overall six medium-large footwear companies have been analysed in their supply relationships with respect to five key supply categories. For each supply category, the buyer view of the focal firms has been complemented with a view from the supplier side. In total the fieldwork is built upon 30 interviews with 22 informants from 18 companies for a total of more than 23 hours of interviews. In all cases, except two, the key informant was owner, CEO or general manager of the company, eventually supported by another company manager. In two cases, the interviews data have been strengthened by a longitudinal analysis of purchase orders over eight years. The fieldwork highlights that agility drivers and agile capabilities impact on the footwear companies’ decision of developing agile supply partnerships. Specifically footwear companies that are under the pressure of high-turbulence agility drivers (here represented by a high collection renewal rate) and that have developed strong agile capabilities (here represented by a local supply network and a purchase orders postponement) choose agile supply partnerships with respect to supply categories that are sensitive to the fashion trends and therefore difficult to be sourced in a stable way – season after season – from the same suppliers. The main contribution to theory is related to the characteristics of supply partnerships in an agile strategy and specifically to the apparent paradox of “high-involvement & short- term” relationships (i.e. agile supply partnerships). In spite of the presence of time compression diseconomies in building up partnership and of the loss of relational (non- redeployable) benefits in closing down partnerships, scenarios of high-turbulence can give companies an incentive to look for short-term partnerships. Such finding can support a wider claim that different levels of turbulence call for different agility strategies requiring different capabilities and practices. The main contribution to practice is related to the way agile partnerships are selected, started and ended. Given that many industries are facing an increase in market turbulence, it appears that many companies – even outside the fashion industry – might have to learn how to balance high-involvement supply relationships with respect to a shorter time horizon.

Apresentada atualmente como fundamental para a vantagem competitiva das empresas, a desintegração vertical de processos é uma ação geral que, uma vez adotada, leva a novas formas de relacionamento com fornecedores. Estas novas formas de relacionamento de empresas com fornecedores fazem com que cadeias de suprimento passem a ser estruturadas por meio de vínculos de cooperação contratual, em contraposição à estruturação vertical por meio de vínculos de cooperação hegemônica. Nesta dissertação estabelecem-se primeiramente os conceitos de cadeia de suprimento e de desintegração vertical de processos; analisam-se em seguida as várias formas de relacionamento contratual que uma empresa pode estabelecer com fornecedores e daí deduzem-se critérios de escolha de fornecedores em coerência com o relacionamento que a empresa irá estabelecer com os fornecedores escolhidos. Para submeter a teste esta dedução, realizou-se uma pesquisa em duas empresas do ramo químico, por meio da qual se identificaram os critérios que estas empresas adotam para escolher fornecedores e estabelecer com eles vínculos de relacionamento contratual. Os resultados da pesquisa levam à conclusão de que as empresas pesquisadas estabelecem com seus fornecedores os relacionamentos mais adequados conforme as circunstâncias, mas não ‘o relacionamento ideal’. A dissertação se encerra com proposta de um programa de estudos transdisciplinares sobre a gestão de suprimentos em geral e os relacionamentos cliente-fornecedor em especial. / Put nowadays as basic for the competitive advantage of companies, vertical disintegration of processes is a wide action that, once adopted, gives rise to new forms of relationships with suppliers. These new forms of relationships between firms and their suppliers draw to the structuring of supply chains according to links of contractual co-operation, in contrast to their vertical structuring according to links of hegemonic co-operation. In this dissertation the concepts of supply chain and of vertical disintegration of processes are settled first; following it the various forms of contractual relationship that a firm can set up with its suppliers are scrutinized and then criteria for supplier selection are inferred, consistently with the relationship the firm will set in agreement with the chosen suppliers. In order to submit this inference to a trial, a research was undertaken at two companies that carry business in the chemical branch undertaken, identifying the criteria these companies adopt for supplier selection and for setting up with the chosen ones links of contractual co-operation. The results of the research draw to the conclusion that the researched companies set up with their suppliers the most suitable relationships according to circumstances, but not ‘the ideal relationship’. The dissertation ends with the proposal of a program for transdisciplinary studies concerning supply management broadly and customer-supplier relationships in special.

Purpose: The purpose of this paper is to empirically investigate the activities that nascent firms undertake to improve customer attractiveness and gain collaborative commitment from strategic suppliers. Design/methodology/approach: Data from a grounded theory study consisting of 26 participants from 15 firms and a review of extant literature were used to develop a theoretical model that explains how a nascent firm increases its customer attractiveness to elicit commitment and collaboration from strategic suppliers. Findings: The authors find that social capital, born of close social ties and social history, enhances the effectiveness of a nascent firm's relationship-building practices. This counteracts a supplier's collaborative risk and consequently increases the nascent firm's customer attractiveness, thus enabling it to obtain strategic supplier collaborative commitment. Practical implications: This research helps managers by providing direction on what practices nascent firms pursue to gain strategic supplier resources and collaboration. Given the reality of resource constraints in nascent firms, it is suggested that this insight is essential to obtaining crucial external resources needed to survive and grow. Originality/value: Extant research on buyer–supplier collaboration is mostly confined to the context of mature firms and does not account for the unique inter-organizational relational challenges faced by nascent firms. This research uncovers the idiosyncrasies of supplier management in nascent firms, and elucidates on the actions that nascent firm managers take to gain supplier collaborative commitment.

Industrial online-reverse-auctions have become a common procurement strategy used by many firms to reduce the cost of purchased goods and services. The advantages of online-reverse-auctions include significant price reductions, increased purchasing and selling efficiencies, and access to new supply and purchasing markets. Despite these benefits, practitioners and academics alike have raised concerns with respect to the impact of online-reverse-auctions on the buyer-supplier relationship. Previous research suggests that the parameters and characteristics of an online-reverse-auction can influence the perceptions of online-reverse-auction participants. This dissertation investigates this phenomenon by examining how the design of an online-reverse-auction influences the supplier's perception of the buyer-supplier relationship. Specifically, this research considers the effects of online-reverse-auction design in terms of the independent variables of auction control, auction bid visibility, and auction award rules and the dependent variables of supplier commitment to the buyer and supplier trust in the buyer. Using a 2 x 2 x 2 quasi-experimental design and the statistical technique of MANCOVA, this study tests hypotheses related to how different online-reverse-auction design characteristics influence supplier commitment to the buyer and supplier trust in the buyer. The results of the study suggest that the type of online-reverse-auctions buyers utilize can have an impact on supplier perceptions of the buyer supplier relationship. Overall, the result suggest that supplier trust is influenced by the type of auction design buyers utilize, however, supplier commitment is not. Auctions utilizing third party auction providers, partial bid visibility, and post auction negotiations tended to result in higher levels of trust on the part of suppliers. This study makes a contribution to the literature in the following areas. First, this study is one of only a handful of empirical studies examining the effects of online-reverse-auction designs on the buyer-supplier relationship. While a considerable debate exists within the literature concerning the pros and cons of online-reverse-auctions, little empirical work exists. This study makes a contribution by providing insight with respect to how online-reverse-auction designs influence supplier perceptions of the buyer-supplier relationships. Secondly, this analysis considers the buyer-supplier relationship in terms of commitment and trust. Previous studies have largely neglected these constructs despite their prominence in the buyer-supplier relationship literature. Finally, given that the use of online-reverse-auctions seems well entrenched in the purchasing strategies of many buying organizations; this study provides guidance for the design of online-reverse-auctions such that buyers can potentially reduce the negative aspects of the process.

<p>Despite the high expectations that researchers and practitioners had for business-to- business electronic marketplaces (EMs), EMs have not prospered, for reasons that are not well understood. Research to this point on EM adoption is very limited due to their quickly changing nature and the complexity of the issue, which involves multiple economic, political and technical factors at both macro and micro levels.</p> <p>EM adoption and buyer-supplier relationships are related. Buyer-supplier relationships play an important role in firms' EM adoption decisions since businesses are not willing to change their current relationships with trading partners to adopt EMs and their support functionalities, such as auctions, reverse auctions, transaction support, etc. The adoption of EMs also impacts buyer-supplier relationships. A framework is proposed in this thesis to investigate these mentioned issues. A buyer-supplier relationship perspective is adopted to investigate EM adoption, and both the economic and power dimensions of buyer-supplier relationships are examined. It is proposed that power can speed up the adoption of EM functionalities and that the effect of power is moderated by market structure. Some important contingencies are suggested that underlay buyer supplier relationships, such as transaction uncertainty, transaction frequency, transaction specific investment, complexity of product description and non-contractible factors, and it is proposed that they are likely to affect choice of functionality. At the same time, it is proposed that EMs can make short-term relationships efficient and long-term relationships effective. It is also proposed that the use of EMs causes varying degrees of satisfaction of participants with their online trading partners.</p> <p>A case study approach was adopted to examine the framework. A total of five EMs and some of their participating buyers and suppliers were studied to validate the propositions. Some important findings are reported. The first finding was that the classification of EMs should not be a dichotomy, but a continuum. It was also found that complexity of product description could not explain why companies choose to use different functionalities, since simple products tended to be involved in EM trading, in all the functionalities that we studied. It was confirmed that relationship efficiency and effectiveness gains were moderated by the drawbacks of EMs and the lack of participant system and process integration into EM systems. Finally, based on the results of the case studies and the confirmed propositions, a refined framework is presented and described.</p> / Doctor of Philosophy (PhD)

In a business to business context, the adoption of a disruptive technology can introduce great risks and benefits for all involved parties. In order to investigate the issues surrounding disruptive technology adoption, this dissertation analyzes the roles of buyers, suppliers, and employees within the adoption process. First, it is found that interorganizational trust has a positive impact on the likelihood of disruptive technology adoption, thus benefitting incumbent suppliers. Second, pre-existing interorganizational trust is shown to lead to lower quality adoption decisions from the buyers' perspective. Finally, employees are found to be less likely to accept disruptive technologies, as compared to incremental technologies. The influence of buyer, supplier, and employee relationships are complex and are explored in further detail in the following studies. / Business Administration/Marketing

M. Tech. (Department of Logistics Management, Faculty of Management Sciences), Vaal University of Technology. / The food retail industry is an important contributor to the economy. Buyers and suppliers in this industry work in collaboration with each other to achieve superior supply chain performance. To achieve this, they have to find ways and methods to improve it. The purpose of this study was to investigate the drivers of supply chain performance in the food retail industry in the Gauteng province. This study considers three of these drivers, namely buyer-supplier trust, buyer-supplier commitment and supply chain relationship longevity. A quantitative approach was adopted in which a survey questionnaire was used to collect data from 429 managers and staff members from food retailing firms in the Gauteng province. The study used a non-probability convenience sampling technique to select respondents. Data were analysed with the aid of two software packages, namely the Statistical Package for the Social Sciences (SPSS version 24.0) and the Analysis of Moment Structures (AMOS version 24.0). A confirmatory factor analysis was applied in examining and testing the relationships between observed constructs and their causal latent constructs while structural equation modelling was used to test the hypothesised relationships between constructs. The results of the research revealed that buyer-supplier trust, buyer-supplier commitment and supply chain relationship longevity positively and significantly influence supply chain performance. Buyer-supplier trust exerted a positive and significant influence on both buyersupplier commitment and relationship longevity. Also, the results showed that buyer-supplier commitment has a positive and significant influence on relationship longevity. The study concludes that to achieve greater supply chain performance, food retailers should expedite the levels of trust, commitment and length of relationships with their suppliers. The results of this study provide useful insights on how businesses in the food retail industry could benefit from trust, commitment and relationship longevity as well as on how to improve supply chain performance. The results of this study contribute to the existing body of knowledge by generating new information on buyer-supplier relationships. Therefore, the study is useful to buyers and suppliers in the food retail industry who wish to enhance supply chain performance and develop better relationships.

In this study, the adaptive behaviour towards sustainability initiatives is investigated in interorganizational exchange relations. To do so, Small and Medium-sized Enterprises (SMEs) in a supplier role that experienced a situation where a buyer asked them to adapt to a certain sustainability initiative are asked about their power relation with their buyer. During this process, suppliers perceived dependence and buyers perceived power are compared, and the outcome of these measures on the adaptive behaviour towards sustainability is modelled. In order to explain the power relation in the dyad in more detail, the framework of the bases of power as initially introduced by French Jr. and Raven (1959) is integrated in the analysis. Sustainability in the current globalised business environment needs to be tackled on a systems level rather than by focusing on a site. The purpose of this research is to shed some light on the permeation of sustainability initiatives through the upward supply chain. The current academic literature about the drivers of Sustainable Supply Chain Management (SSCM) point towards the buyers as a powerful driver. Therefore, this driver is scrutinized in detail with the aims to: a) deliver practical advice on how to improve sustainability permeation from a buyer s perspective; and b) contribute to academic knowledge by dismantling and analysing the mechanism behind buyer power driven sustainability permeation. An online questionnaire was deployed to collect data from SMEs in a supplier role. The participants were contacted and reminded via email. The questionnaire is based on established instruments to measure suppliers dependence (Bode et al., 2011) and the bases of power (Raven et al., 1998). The quantitative analysis of the responses to the questionnaires is built around a mediation model with suppliers dependence as Independent Variable (IV), the binary outcome of sustainability adaptation as Dependent Variable (DV) and two mediators representing the magnitude of hard and soft power bases in the dyadic exchange relation. The established framework of the bases of power is a suitable instrument to explain the relationship between a supplier s adaptive behaviour towards sustainability and its dependence on its buyer. Measurements solely of how a supplier perceives its dependence on the buyer do not explain the adaptive behaviour of a supplier towards a buyer-requested sustainability initiative. Introducing the bases of power framework and distinguishing between soft and hard bases of power explains why suppliers experiencing hard power bases are more likely to reject a buyer-requested sustainability initiative, whereas suppliers experiencing soft power bases show a significantly higher acceptance of buyer-requested sustainability initiatives. Without dismantling the black box power, the observation that the two effects neutralize each other if not distinguished cannot be made. The original contribution to knowledge is the mechanism behind power in dyadic exchange relations and how this mechanism conduces to the permeation of sustainability through the supply chain. Knowing about the different pathways hard and soft, and their opposite effect on sustainability adaptation, advances knowledge in the SSCM literature and provides guidance for practitioners.