Made available in DSpace on 2014-12-17T14:53:05Z (GMT). No. of bitstreams: 1 EvertonS_DISSERT.pdf: 1215528 bytes, checksum: 9fd0b2ab4c831dc0b107eb1bed7bb87b (MD5) Previous issue date: 2012-01-27 / Conselho Nacional de Desenvolvimento Cient?fico e Tecnol?gico / This work presents a hybrid approach for the supplier selection problem in Supply Chain Management. We joined decision-making philosophy by researchers from business school and researchers from engineering in order to deal with the problem more extensively. We utilized traditional multicriteria decision-making methods, like AHP and TOPSIS, in order to evaluate alternatives according decision maker s preferences. The both techiniques were modeled by using definitions from the Fuzzy Sets Theory to deal with imprecise data. Additionally, we proposed a multiobjetive GRASP algorithm to perform an order allocation procedure between all pre-selected alternatives. These alternatives must to be pre-qualified on the basis of the AHP and TOPSIS methods before entering the LCR. Our allocation procedure has presented low CPU times for five pseudorandom instances, containing up to 1000 alternatives, as well as good values for all considered objectives. This way, we consider the proposed model as appropriate to solve the supplier selection problem in the SCM context. It can be used to help decision makers in reducing lead times, cost and risks in their supply chain. The proposed model can also improve firm s efficiency in relation to business strategies, according decision makers, even when a large number of alternatives must be considered, differently from classical models in purchasing literature / Este trabalho apresenta uma abordagem h?brida para o problema de sele??o de fornecedores em cadeias de suprimentos geridas com base na metodologia SCM (do ingl?s, Supply Chain Management). Busca-se combinar as filosofias de avalia??o tradicionalmente adotadas pelos pesquisadores oriundos da escola de neg?cios e pelos pesquisadores oriundos da ?rea de engenharia, esta ?ltima baseada em otimiza??o, para o trato do problema. Para tal, utilizam-se t?cnicas multicrit?rios tradicionais, como os m?todos AHP e TOPSIS para avaliar as alternativas segundo a prefer?ncia dos decisores. Ambas as t?cnicas s?o modeladas de maneira a suportar defini??es da Teoria dos Conjuntos Fuzzy, tratando-se assim informa??es imprecisas. Adicionalmente, apresenta-se um algoritmo GRASP, com base em m?ltiplos objetivos, para a aloca??o de pedidos entre as alternativas pr?-selecionadas por meio dos m?todos supracitados. Este algoritmo, por sua vez, apresenta tempos de CPU relativamente baixos para cinco inst?ncias pseudo-aleat?rias, contendo entre 20 e 1000 alternativas, bem como valores pr?ximos aos valores m?nimos para cada um dos objetivos considerados. Destaca-se que o modelo proposto se mostrou apropriado para a avalia??o de fornecedores no contexto apresentado, podendo-se auxiliar os decisores na redu??o de lead times, custos e riscos de sua cadeia de suprimentos, bem como na melhoria da efici?ncia desta estrutura em rela??o ? sua vis?o de neg?cios, mesmo quando um n?mero elevado de alternativas ? considerado, diferentemente dos modelos cl?ssicos apresentados na literatura

Submitted by Caroline Falcao (caroline.rfalcao@ufpe.br) on 2017-06-01T17:19:38Z No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Patricia TESE.pdf: 2509023 bytes, checksum: 8b18c1c702d02a05b1c449ff04234257 (MD5) / Made available in DSpace on 2017-06-01T17:19:38Z (GMT). No. of bitstreams: 2 license_rdf: 811 bytes, checksum: e39d27027a6cc9cb039ad269a5db8e34 (MD5) Patricia TESE.pdf: 2509023 bytes, checksum: 8b18c1c702d02a05b1c449ff04234257 (MD5) Previous issue date: 2012-06-18 / Para que o processo colaborativo ocorra de forma eficiente, as atividades de identificar os melhores fornecedores para um novo produto ou serviço ou avaliar o desempenho de um fornecedor antigo são tarefas essenciais no gerenciamento da cadeia de suprimentos. O problema de seleção de fornecedores se enquadra no contexto multicritério por envolver diversos critérios qualitativos e quantitativos na tomada de decisão. Esta pesquisa tem como principal objetivo propor um modelo de apoio à decisão para a classificação de fornecedores em níveis de colaboração no gerenciamento da cadeia de suprimentos de uma forma estruturada, utilizando o método ELECTRE TRI. Diversos trabalhos têm explorado o problema de seleção de fornecedores no contexto multicritério. A maioria destes estudos aborda as problemáticas de escolha e ordenação e são propostos métodos específicos para este fim. A problemática de classificação não é muito explorada e, além disso, existem poucos trabalhos que tratam especificamente do assunto colaboração com fornecedores no contexto multicritério. Considerando que na maioria dos casos, em diversos ramos de atuação, as empresas possuem em sua base, fornecedores com características e graus de desempenho diferentes, torna-se necessário decidir em que nível colaborar com cada tipo de fornecedor. Com a utilização do modelo proposto torna-se possível gerenciar os fornecedores, considerando suas diferenciação em termos de desempenho, classificando-os em níveis de colaboração apropriados, de forma a viabilizar a adoção de estratégias distintas com cada categoria. Desta forma, é possível que a decisão no contexto apresentado ocorra de forma sistematizada, e tendo em vista a natureza repetitiva deste problema, o modelo proposto se constitui em uma ferramenta útil de apoio à decisão, a qual pode ser utilizada periodicamente de acordo com as necessidades do decisor, a fim de fornecer feedback da avaliação dos fornecedores, acompanhar a evolução do desempenho nos critérios definidos e rever a estratégia adotada se necessário. / The processes of identifying the best suppliers for a new product or service or even to evaluate the performance of an existing supplier are essential tasks in managing the supply chain, in order to enable that the collaborative process occurs in an efficient manner. The supplier selection problem (SSP) fits the multicriteria context due to involve several qualitative and quantitative criteria in the decision making process. So, the main objective of this research is to propose a model of multiple criteria decision aid for suppliers sorting in levels of collaboration in supply chain management, using ELECTRE TRI method. Several studies have approached the supplier selection problem in multicriteria context. Most of these studies address the choice and ranking problems and specific methods are proposed for this purpose. However, the sorting problem is not much explored, and in addition, there are few studies that specifically address the subject of collaboration with suppliers considering multicriteria context. Whereas in most cases, in several business segments, companies have at their base, suppliers with different features and degrees of performance, it becomes necessary to decide at what level to collaborate with each type of supplier. Thus, using the proposed model makes it possible to manage suppliers, considering their differentiation in terms of performance, sorting them into appropriate levels of collaboration in order to facilitate the adoption of different strategies with each category. Moreover, with the use of this model, it is possible that the decision in this context occurs in a systematic manner and, considering the repetitive nature of this problem, the proposed model constitutes a useful tool for decision aid. This tool can be used periodically in accordance with the needs of the decision maker in order to provide feedback of the evaluation to suppliers, monitoring the performance in the defined criteria set and, reviewing the strategy adopted if necessary.

The complexity in the vehicles production process is due mainly to the large number of Assembled components that are generally characterized by a high technological content. The castings, one of these components, fit perfectly in this category and they only can be made at a competitive quality and cost level if a proper tooling is available. The molds and dies manufacturing process requires modern computer technologies and materials of high reliability and performance. Although made to mass production, toolings are unique products whose manufacturing requires technical knowledge and familiarity with the casting process where they will be employed. The selection of a casting tooling supplier is usually a complicated and time- consuming issue. The decision process is based on several criteria that can be conflicting or superposed, objective or subjective. In the present paper the analytic hierarchy process (AHP) was used to select a tooling supplier for the manufacturing of a transmission housing by the die casting process. Several qualitative and quantitative criteria for the tooling supplier selection were identified through the technical literature review and discussion with foundry specialists. Subsequently, the criteria hierarchy was established in three levels and comparison matrixes were developed to determine the priorities among them. The consistency ratio for each matrix was calculated and the final score of each potential supplier was determined. The study was concluded with a sensitivity analysis that contributed to confirm the choice of the selected supplier. The application of the methodology improved the selection process by reducing the subjectivity and by weighing the major selection criteria. / A complexidade no processo de produção de veículos deve-se, entre outras razões, aos inúmeros componentes utilizados na montagem, que em geral tem elevado conteúdo tecnológico. Os fundidos enquadram-se perfeitamente nesta categoria e somente podem ser produzidos com qualidade e custo competitivo com o emprego de moldes apropriados. A fabricação destes moldes é feita usando-se modernas tecnologias computacionais e materiais de alto desempenho e confiabilidade. Embora destinados à produção em massa, cada molde é um produto único cuja manufatura requer conhecimento técnico específico e familiaridade com o processo de fundição onde serão utilizados. A escolha de um fornecedor para moldes de fundição é normalmente um problema complicado e que consome tempo, a análise envolve múltiplos critérios, que podem ser conflitantes ou superpostos, objetivos ou subjetivos. O objetivo deste trabalho é mostrar a utilização do processo hierárquico analítico (AHP) para selecionar um fornecedor de um molde para uso no processo de fundição sob pressão, para produção de uma carcaça de transmissão. Através da revisão de literatura técnica e contatos com especialistas, diversos critérios qualitativos e quantitativos foram identificados para a escolha do fornecedor. Posteriormente estes critérios foram hierarquizados em três níveis e as prioridades entre eles identificadas em matrizes de comparação. A seguir, calculou-se a razão de consistência para cada uma das matrizes e obteve-se o escore final de cada fornecedor em potencial. O estudo foi concluído com uma análise de sensibilidade, que contribuiu para ratificar a escolha do fornecedor selecionado. A aplicação do método melhorou o processo de seleção pela redução da subjetividade e pela ponderação dos critérios julgados importantes em um fabricante de moldes complexos.

Master Thesis deals with supplier rating with usage of fuzzy logic as an advanced decision-making method. There was made a model for selection of the optimal technologies supplier for a self-service vehicle wash. The main solution is realized with support of programs MS Excel and MATLAB.

The diploma thesis decsribes the company purchasing processes. The thesis is focusing on the company purchasing functions. It defines the working methods and the processes through which the purchasing processes are coordinated. The target is to describe the complexity of the system and its complete structure. The theoretical part presents theoretical solutions to the problems related to absence of the strategic purchasing in the company. It describes the missing processes and suggests how to implement the strategic sourcing department. The practical part is focusing on presenting the solution to problems related to material procuring based on the company financial analysis. The goal is to implement missing processes in the company organization a to focus on the supplier selection and the supplier development as the key purchasing problem. The diploma thesis describes the purchasing system in its complexity. The thesis is structurized to describe every single function and process ensuring that the material procurement works effectively and efficiently.

The master's thesis is focused on optimal selection of transportation solution provider as a key activity of inbound logistics department of manufacturing company ABC s.r.o. The summary of general activities and objectives of inbound logistics are followed by the analysis of last selection procedure. Then there is mentioned suggestion of new selection procedure using the methods of Multiple Criteria Decision Making which is based on the knowledge from specialized logistical literature. This work assume that using the methods of Multiple Criteria Decision Making will result in more effective selection procedure in company ABC s.r.o.

C­lem t©to diplomov© prce je nvrh vhodn© metody, jak vyhodnotit dodavatele model letadel a leteck©ho p­sluenstv­ holandsk© spoleÄnosti Aviation Megastore. Tato poleÄnost existuje na trhu ji v­ce ne 25 let a m v­ce ne 170 dodavatel po cel©m svÄtÄ. Proto vznikla poteba jednotliv© vrobce a distributory ohodnotit a zvit jejich vvoj bÄhem jednotlivch let, p­padnÄ u nÄkterch vybranch dodavatel zvit vzhledem k neuspokojivm vsledkm monost ukonÄen­ spoluprce. Pro vyhodnocen­ bude pouit program MS Excel a MATLAB.

This master thesis deals with the financing of the revitalization of a particular block of flats in Brno. The thesis contains process of reconstruction, comparison of supplier´s offers and bank credit products and return on investments. Based the selection criteria, analysis and calculations is chosen optimal supplier and bank institution. The result of this thesis is a proposal for the flat owners association how to efficiently finance revitalization.

The growing need to source manufacturing activities to original equipment manufacturers has presented a strategic challenge for firms in evaluating and selecting supplier partners for their products. Supplier performance evaluation is a well-researched area within supply chain management. Though several authors have contributed with models for supplier selection, there still exist uncertainties regarding how high-tech start-up firms should capitalize on these models. By conducting a case study at AB Realisator Management Consulting currently developing a new firefighting robot concept called FUMO™, the authors were able to develop a model for supplier selection and test it on a real case scenario. Results indicate that high-tech start-up firms in general should apply the following step-by-step process for selecting suppliers: Align supply chain strategy with product characteristics regarding supply and demand uncertainty, select supplier performance metrics from the comprehensive bank of metrics presented in this thesis related to the supply chain strategy, evaluate suppliers based on the selected performance metrics using the decision making framework Analytic Hierarchy Process (AHP). By following the suggested process step by step, incorporating performance metrics to the AHP structure, high-tech start-up firms will be able to find strategically suitable suppliers to manufacture their products. / Det växande behovet av att lägga ut tillverkningsverksamhet till externa leverantörer har bidragit med en strategisk utmaning för företag, gällande att utvärdera och välja leverantörer för sina produkter. Leverantörsutvärdering är ett väl utforskat område inom supply chain management. Även om flera författare har bidragit med modeller för leverantörsutvärdering, finns det fortfarande oklarheter om hur högteknologiska nystartsföretag bör dra nytta av dessa modeller. Genom att utföra en fallstudie på AB Realisator Management Consulting som för närvarande utvecklar ett nytt robotkoncept för brandförsvaret, har författarna kunnat utveckla en modell för val av leverantörer, samt testat den på ett verkligt scenario. Resultat visar att högteknologiska nystartsföretag i allmänhet bör tillämpa följande steg-för-steg-process för val av leverantörer: Matcha supply chain-strategi med produktattribut baserat på osäkerhet i tillgång och efterfrågan, välja mätvärden relaterade till vald supply chain-strategi från den omfattande mätvärdesbanken som presenteras i denna avhandling, utvärdera leverantörer utifrån valda mätvärden genom att applicera beslutsverktyget Analytic Hierarchy Process (AHP). Genom att följa den föreslagna processen steg för steg kommer högteknologiska nystartsföretag kunna välja strategiskt lämpliga leverantörer för att tillverka sina produkter.

Background: The business-to-business (B2B) industry stands for a significant portion of the environmental issue, yet the customer is still having price, quality, and service as major determinants for the choice of suppliers. The difficulty on how to evaluate environmental factors is hence increasingly demanding. One common and simple way for businesses to present their efforts towards sustainability is to certify their Environmental Management System with an ISO 14001 certification. Nonetheless, the question remains of the value of this premise in Sweden in our contemporary world. This study thereby investigates the value of working with environmentally sustainable business partners in the B2B market in Sweden. Purpose: This paper aims to explore the cost and benefits of working with environmentally sustainable business partners, using ISO 14001 as a reference point, within the Swedish B2B market.  Method: This study adheres to the interpretivist paradigm, with a qualitative approach. Nine semi-structured interviews with six B2B companies in Sweden were conducted and analysed via thematic analysis, using codes and emerging themes.  Conclusion: There are severe gaps in the ISO 14001 framework, and that one cannot trust it as much regarding the environment as intended or as much as firms do today. The real value for environmental sustainability is created when sustainable B2B firms start selecting suppliers based on their own sustainable values, not on time efficiency or costs. For a shared responsibility, firms have to evaluate suppliers based on actual and not perceived environmentally sustainable efforts.