94 resultados para Global environment

em Instituto Politécnico do Porto, Portugal


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23rd SPACE AGM and Conference from 9 to 12 May 2012 Conference theme: The Role of Professional Higher Education: Responsibility and Reflection Venue: Mikkeli University of Applied Sciences, Mikkeli, Finland

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Esta dissertação foi desenvolvida no âmbito do 2º ano do Mestrado em Engenharia Mecânica – Ramo de Gestão Industrial no Instituto Superior de Engenharia do Porto. Este projeto realizou-se em ambiente industrial, nomeadamente na Tubembal, S.A. uma empresa localizada no concelho da Trofa, distrito do Porto. Esta empresa dedica-se à transformação de papel e comércio de embalagens, produz tubos e cantoneiras de cartão e é atualmente a maior empresa do sector na Península Ibérica. Esta dissertação baseia-se na aplicação de ferramentas Lean, numa perspetiva de melhoria de um ambiente produtivo industrial, melhorando o desempenho dos processos existentes e consequentemente a produtividade da empresa em estudo, com o objetivo de a tornar mais competitiva num ambiente global. A metodologia Lean tem como principal objetivo a eliminação de desperdício em toda a cadeia de valor e neste sentido surge como fundamental numa cultura de melhoria contínua e focalização no cliente, que se pretende instalar nesta empresa. Foi realizada uma análise profunda a toda a cadeia de valor como forma de identificar os maiores desperdícios e posteriormente apresentadas medidas para combater estes mesmos desperdícios, podendo assim reduzir custos. No projeto de melhoria apresentado à organização constam como principais ações, a implementação da metodologia 5S’s como ferramenta essencial para mudança de hábitos dos funcionários e integração e envolvimento de todos num mesmo projeto comum, na busca da melhoria contínua. Procedeu-se ainda à simulação de algumas propostas de reorganização do layout de forma a encontrar aquela que minimizasse os custos com movimentações e garantisse um fluxo controlado e em segurança dos produtos e pessoas dentro da fábrica. As propostas apresentadas mostram que a reorganização do layout da fábrica pode trazer ganhos significativos para a empresa, redução direta no tempo perdido em deslocações e maior disponibilidade dos meios e consequente direta redução dos custos. Todas as propostas apresentadas visam a adaptação da empresa a um modelo mais dinâmico de negócio, capaz de responder rápida e eficazmente aos seus clientes, adaptando-se ao mercado e garantindo a sua sustentabilidade num futuro próximo.

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This paper presents a collaborative virtual learning environment, which includes technologies such as 3D virtual representations, learning and content management systems, remote experiments, and collaborative learning spaces, among others. It intends to facilitate the construction, management and sharing of knowledge among teachers and students, in a global perspective. The environment proposes the use of 3D social representations for accessing learning materials in a dynamic and interactive form, which is regarded to be closer to the physical reality experienced by teachers and students in a learning context. A first implementation of the proposed extended immersive learning environment, in the area of solid mechanics, is also described, including the access to theoretical contents and a remote experiment to determine the elastic modulus of a given object.These instructions give you basic guidelines for preparing camera-ready papers for conference proceedings. Use this document as a template if you are using Microsoft Word 6.0 or later. Otherwise, use this document as an instruction set. The electronic file of your paper will be formatted further. Define all symbols used in the abstract. Do not cite references in the abstract.

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Teaching and learning computer programming is as challenging as difficult. Assessing the work of students and providing individualised feedback to all is time-consuming and error prone for teachers and frequently involves a time delay. The existent tools and specifications prove to be insufficient in complex evaluation domains where there is a greater need to practice. At the same time Massive Open Online Courses (MOOC) are appearing revealing a new way of learning, more dynamic and more accessible. However this new paradigm raises serious questions regarding the monitoring of student progress and its timely feedback. This paper provides a conceptual design model for a computer programming learning environment. This environment uses the portal interface design model gathering information from a network of services such as repositories and program evaluators. The design model includes also the integration with learning management systems, a central piece in the MOOC realm, endowing the model with characteristics such as scalability, collaboration and interoperability. This model is not limited to the domain of computer programming and can be adapted to any complex area that requires systematic evaluation with immediate feedback.

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In this paper we describe a casestudy of an experiment on how reflexivity and technology can enhance learning, by using ePorfolios as a training environment to develop translation skills. Translation is today a multiskilled job and translators need to assure their clients a good performance and quality, both in language and in technology domains. In order to accomplish it, for the translator all the tasks and processes he develops appear as crucial, being pretranslation and posttranslation processes equally important as the translation itself, namely as far as autonomy, reflexive and critical skills are concerned. Finally, the need and relevance for collaborative tasks and networks amongst virtual translation communities, led us to the decision of implementing ePortfolios as a tool to develop the requested skills and extend the use of Internet in translation, namely in terminology management phases, for the completion of each task, by helping students in the management of the projects deadlines, improving their knowledge on the construction and management of translation resources and deepening their awareness about the concepts related to the development and usability of ePorfolios.

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In the context of the Bologna Declaration a change is taking place in the teaching/learning paradigm. From teaching-centered education, which emphasizes the acquisition and transmission of knowledge, we now speak of learning-centered education, which is more demanding for students. This paradigm promotes a continuum of lifelong learning, where the individual needs to be able to handle knowledge, to select what is appropriate for a particular context, to learn permanently and to understand how to learn in new and rapidly changing situations. One attempt to face these challenges has been the experience of ISCAP regarding the teaching/learning of accounting in the course Managerial Simulation. This paper describes the process of teaching, learning and assessment in an action-based learning environment. After a brief general framework that focuses on education objectives, we report the strengths and limitations of this teaching/learning tool. We conclude with some lessons from the implementation of the project.

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Int’l J. of Information and Communication Technology Education, 3(2), 1-14, April-June 2007

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Project LIHE: the Portuguese Case. ESREA Fourth Access Network Conference – “Equity, Access and Participation: Research, Policy and Practice”. Edinburgh (Scotland), 11 – 13 December, 2003.

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Jornadas de Contabilidade e Fiscalidade promovidas pelo Instituto Superior de Contabilidade e Administração do Porto, em Abril de 2009

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Dissertação apresentada ao Instituto Superior de Contabilidade e Administração para obtenção do Grau de Mestre em Auditoria. Orientada por: Mestre Alcina Dias

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The increasing use of distributed generation units based on renewable energy sources, the consideration of demand-side management as a distributed resource, and the operation in the scope of competitive electricity markets have caused important changes in the way that power systems are operated. The new distributed resources require an entity (player) capable to make them able to participate in electricity markets. This entity has been known as Virtual Power Player (VPP). VPPs need to consider all the business opportunities available to their resources, considering all the relevant players, the market and/or other VPPs to accomplish their goals. This paper presents a methodology that considers all these opportunities to minimize the operation costs of a VPP. The method is applied to a distribution network managed by four independent VPPs with intensive use of distributed resources.

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As doenças cardiovasculares lideram as causas de mortalidade em Portugal. Os factores de risco (FR) associados são sexo masculino, idade avançada, hipertensão arterial, tabagismo e dislipidemias, cuja sinergia amplifica o risco cardiovascular global (RCG). Realizou-se um rastreio em indivíduos da região Norte de Portugal, com o objectivo de determinar o RCG, pela tabela derivada do projecto SCORE. Verificou-se excesso de peso e pressão arterial elevada em mais de metade da amostra. Observou-se que RCG passa a alto risco acima dos 50 anos. O RCG permite estimar a interacção de FR individuais, permitindo definir estratégias interventivas, com potenciais ganhos em saúde.

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An auction model is used to increase the individual profits for market players with products they do not use. A Financial Transmission Rights Auction has the goal of trade transmission rights between Bidders and helps them raise their own profits. The ISO plays a major rule on keep the system in technical limits without interfere on the auctions offers. In some auction models the ISO decide want bids are implemented on the network, always with the objective maximize the individual profits for all bidders in the auction. This paper proposes a methodology for a Financial Transmission Rights Auction and an informatics application. The application receives offers from the purchase and sale side and considers bilateral contracts as Base Case. This goal is maximize the individual profits within the system in their technical limits. The paper includes a case study for the 30 bus IEEE test case.

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The ability to locate an individual is an essential part of many applications, specially the mobile ones. Obtaining this location in an open environment is relatively simple through GPS (Global Positioning System), but indoors or even in dense environments this type of location system doesn't provide a good accuracy. There are already systems that try to suppress these limitations, but most of them need the existence of a structured environment to work. Since Inertial Navigation Systems (INS) try to suppress the need of a structured environment we propose an INS based on Micro Electrical Mechanical Systems (MEMS) that is capable of, in real time, compute the position of an individual everywhere.

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There is a general consensus that in a competitive business environment, firms’ performance will depend on their capacity to innovate. To clarifying how, when and to what extent innovation affects the market and financial performance of firms, the authors deploy seemingly unrelated regression equation model to examine innovation in over 500 Portuguese firms from 1998 to 2004. The results confirm, as theorists have frequently assumed, that innovation positively affects firms’ performance; but they also suggest that the reverse is true, a result that is less intuitively obvious, given the complexity of the innovation process and local, national and global competitive environments.