No description available.

Estágio realizado na kaizen Institute e orientado pelo Eng.º João Castro / Tese de mestrado integrado. Engenharia Industrial e Gestão. Faculdade de Engenharia. Universidade do Porto. 2009

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The use of peer-to-peer applications is growing dramatically, particularly for sharing large files and software. Currently, peer-to-peer file sharing systems are playing a dominant role in the content distribution over Internet. Therefore understanding the impact of peer-to-peer traffic on networks is significant and some reaction is necessary in order to keep the Internet functioning efficiently. In this Thesis, we designed a P2P network flow management system, combining Classifier and Linux TC (Traffic Control). We analyzed the network traffic by using Classifier and classified the network traffic into P2P and NP2P (non-P2P). Linux TC is a tool for implementing the management policy. Finally, the management has implemented in real network environment and improved the network performance.

Estágio realizado no Instituto Kaizen e orientado pelo Eng.º António Costa / Tese de mestrado integrado. Engenharia Mecânica. Faculdade de Engenharia. Universidade do Porto. 2008

Le Global Sourcing est aujourd'hui en pleine expansion car il offre aux entreprises une source potentielle de compétitivité dans un environnement de plus en plus concurrentiel. Néanmoins, il génère aussi une complexification des flux et une fragilisation de la Supply Chain Globale. La problématique du Global Sourcing est vaste et touche les différents niveaux de décision de l'entreprise. Pour cela nous nous sommes focalisés dans ce travail sur les aspects tactiques et opérationnels de ce domaine. Nous avons abordé ainsi diverses questions : Quels leviers d'action pour un pilotage efficace des flux en approvisionnement lointain? Comment sécuriser les approvisionnements lointains dans le contexte industriel actuel ? Les politiques classiques de pilotage de flux sont-elles suffisantes pour les approvisionnements lointains ? En collaboration avec les partenaires industriels de la Chaire Supply Chain de l'Ecole Centrale Paris, nous avons abordé différentes facettes de cette problématique. Nous nous sommes intéressés tout d'abord à la prévision comme élément nécessaire au pilotage des flux lointains et nous avons proposé une méthodologie de sélection et de mise à jour de méthodes de prévision. Les délais longs en approvisionnement lointain font que les erreurs de prévision s'amplifient, ce qui nous a amenés à étudier l'erreur prévisionnelle. Nous avons proposé dans ce sens une modélisation fine de cette erreur et de son évolution en fonction de l'horizon temporelle de la prévision. Dans la dernière étape de ce travail, nous avons utilisé cette modélisation de l'incertitude pour piloter efficacement les flux lointains. Nous avons montré sur des cas réels issus de l'entreprise PSA l'efficacité de la méthode proposée en termes de respect du niveau de service avec un niveau de stock largement inférieur aux méthodes classiques. / Global Sourcing is becoming a common practice in industrial activities since it offers companies opportunities to improve its competitiveness in an increasingly competitive business environment. At the same time, it makes the flows more complex and the supply chain more fragile. Global Sourcing thus gives rise to a wide range of issues and impacts different levels of decision making. To address such a problem, we focus on tactical and operational decision making. We attempt to answer a variety of questions: What are possible actions for flow management in global sourcing? How to secure the procurement in the current industrial context? Are classical flow management policies also efficient in global sourcing? In collaboration with the industrial partners of the Chaire Supply Chain at Ecole Centrale Paris, we consider different problems. Firstly, we are interested in demand forecasting, an essential element for flow management in global sourcing and proposed a methodology to select an appropriate forecasting method and to update it dynamically. The fact that the lead times are long in global sourcing makes the forecast less reliable and less and less reliable when the forecast horizon increases, which requires an evaluation of the forecast accuracy. We propose a detailed model of the forecast accuracy and its evolution with time horizon involved. As the last step of the work, this forecast accuracy model is applied to a real life flow management problem in global sourcing. The case study carried out based on real life data from PSA demonstrates a clear superiority of the proposed method over existing ones in terms of both service level and inventory level.

Made available in DSpace on 2014-06-11T19:26:17Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-06-22Bitstream added on 2014-06-13T19:33:54Z : No. of bitstreams: 1 santos_rcs_me_bauru.pdf: 636591 bytes, checksum: 95f1f26369ad9231892d78cf218dec33 (MD5) / Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) / Este trabalho tem como objetivo principal classificar a práticas de gestão de fluxo em cadeia de suprimentos estudadas como puxadas ou empurradas, verificando quais são os aspectos básicos que a caracterizaram como tais. Para alcançar este objetivo, os objetivos secundários são: adotar, entre os diversos entendimentos presentes na literatura revisada, uma definição de fluxo puxado, empurrado e híbrido, na cadeia de suprimentos e realizar estudos de caso para ilustrar a classificação proposta. Desenvolveu-se uma pesquisa bibliográfica em diversas bases de dados para o referencial teórico, como livros, artigos científicos, dissertações, teses e sites especializados. Para os exemplos de aplicação foram usadas as etapas formais do estudo de caso. Como principais resultados destacam-se a contribuição para a literatura existente sobre Cadeia de Suprimentos, revelando a pesquisa de várias práticas significativas e suas características, bem como uma caracterização destas práticas como puxadas, empurradas ou híbridas, permitindo identificar características e particularidades. Os resultados devem possibilitar ainda que pesquisadores e praticantes ponderem as implicações resultantes deste posicionamento em termos de desempenho esperado de cada prática de gestão de fluxo em cadeia de suprimentos / This paper aims to classify the flow management practices in supply chain studied as pushed or pulled by checking what are the basic aspects that characterize them as such. To achieve this goal, secondary objectives are: to adopt, among the different understandings in the literature reviewed, a definition of flow pulled, pushed and hybrid supply chain and perform case studies to illustrate the proposed classification. A literature search in several databases to the theoretical reference has been developed, such as books, journals articles, dissertations, theses and specialized sites. For the application examples were used formal steps of the case study. As main finding is highlighted the contribution to the literature on supply chain, revealing the significant research of various practices and their characteristics as well as a characterization of these practices as pulled, pushed or hybrid, to identify characteristics and peculiarities. The results should allow researchers and practicioners still to consider the implications arising from this position in terms of expected performance of each management practice in supply chain flow

Orientador: Fernando Bernardi de Souza / Banca: José Alcides Gobbo Junior / Banca: Marcel Andreotti Musetti / Resumo: Este trabalho tem como objetivo principal classificar a práticas de gestão de fluxo em cadeia de suprimentos estudadas como puxadas ou empurradas, verificando quais são os aspectos básicos que a caracterizaram como tais. Para alcançar este objetivo, os objetivos secundários são: adotar, entre os diversos entendimentos presentes na literatura revisada, uma definição de fluxo puxado, empurrado e híbrido, na cadeia de suprimentos e realizar estudos de caso para ilustrar a classificação proposta. Desenvolveu-se uma pesquisa bibliográfica em diversas bases de dados para o referencial teórico, como livros, artigos científicos, dissertações, teses e sites especializados. Para os exemplos de aplicação foram usadas as etapas formais do estudo de caso. Como principais resultados destacam-se a contribuição para a literatura existente sobre Cadeia de Suprimentos, revelando a pesquisa de várias práticas significativas e suas características, bem como uma caracterização destas práticas como puxadas, empurradas ou híbridas, permitindo identificar características e particularidades. Os resultados devem possibilitar ainda que pesquisadores e praticantes ponderem as implicações resultantes deste posicionamento em termos de desempenho esperado de cada prática de gestão de fluxo em cadeia de suprimentos / Abstract: This paper aims to classify the flow management practices in supply chain studied as pushed or pulled by checking what are the basic aspects that characterize them as such. To achieve this goal, secondary objectives are: to adopt, among the different understandings in the literature reviewed, a definition of flow pulled, pushed and hybrid supply chain and perform case studies to illustrate the proposed classification. A literature search in several databases to the theoretical reference has been developed, such as books, journals articles, dissertations, theses and specialized sites. For the application examples were used formal steps of the case study. As main finding is highlighted the contribution to the literature on supply chain, revealing the significant research of various practices and their characteristics as well as a characterization of these practices as pulled, pushed or hybrid, to identify characteristics and peculiarities. The results should allow researchers and practicioners still to consider the implications arising from this position in terms of expected performance of each management practice in supply chain flow / Mestre

No description available.

This diploma thesis deals with selected methods that large companies can use to optimize their business results in the international environment. It focuses namely on methods of outsourcing, offshoring, tax optimization and cash flow management. The first part briefly describes globalization in the world economy and transnational corporations as its major players. The next two chapters are devoted to strategies which lead to cost reductions of enterprises due to outsourcing and offshoring. The fourth part characterizes the way offshoring enters into foreign markets in the form of foreign direct investments. The fifth section deals with tax optimizations for multinational companies. The sixth part mentions the measures taken so far in the area of tax coordination in the world and in particular the European Union and the last chapter briefly defines various options which can be used for cash flow optimization.