929 resultados para Graphic simulators


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Tese de doutoramento, Linguística (Linguística Aplicada), Universidade de Lisboa, Faculdade de Letras, 2015

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Relatório da prática de ensino supervisionada, Mestrado em Ensino das Artes Visuais, Universidade de Lisboa, 2014

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Relatório da prática de ensino supervisionada, Mestrado em Ensino de Artes Visuais, Universidade de Lisboa, 2014

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Relatório da Prática de Ensino Supervisionada, Mestrado em Ensino da Matemática, Universidade de Lisboa, 2015

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Ongoing collaboration with Christian Marclay. ‘Graffiti Composition’ and ‘Screenplay’ are two related works consisting of live musical improvisation and performance. They are part of an ongoing collaboration with the artist Christian Marclay. 'Graffiti Composition' involved Beresford directing an invited orchestra of improvising musicians. The work focuses on making music from the random compositional acts of strangers. Prior to realization, Marclay fly-posted several hundred sheets of blank manuscript paper, collecting the sheets some days later, after passers-by had written on them – using either traditional music notation or more transgressive interference modes (colour-blocks, torn holes in or abstract graphic symbols on the paper) – and sending photographs of them to Beresford. Beresford’s directorial decisions helped these random graffiti become music via simple formal processes – restricting each musician to a handout of two MS each, or stipulating a mini-concerto for each player. Beresford’s contribution explores the paradox of improvisation stipulated by strangers and controlled, however loosely, by the structuring agency of a musical director. ‘Screenplay’ extended this collaborative process between Marclay and Beresford. Beresford and other musicians responding to a visual track comprising found and public domain moving images manipulated by Marclay – gunfight scenes from a TV Western; running water; racing cars morphing into crying children, and so on, in black-and-white, with single-colour blocks appearing and developing as lines, spots, and other suggestive ‘notation’. The elliptical, surprising, humorous nature of the images at times is hyperexplicated by the improvised music, and at others challenged, ignored or contradicted by the musicians’ interaction. ‘Graffiti Composition’ was performed by the LSO at St. Luke’s, London, March 22, 2005. ‘Screenplay’ premiered in Dundee in 2006, and toured Europe during 2007. Reviewed in the Herald (21 Feb 06) and Times (24 March 07). Beresford’s work as improviser, composer and performer was profiled in The Wire (April 2002, May 2005).

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Relatório da Prática de Ensino Supervisionada, Mestrado em Ensino da Matemática, Universidade de Lisboa, 2015

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Renewable based power generation has significantly increased over the last years. However, this process has evolved separately from electricity markets, leading to an inadequacy of the present market models to cope with huge quantities of renewable energy resources, and to take full advantage of the presently existing and the increasing envisaged renewable based and distributed energy resources. This paper proposes the modelling of electricity markets at several levels (continental, regional and micro), taking into account the specific characteristics of the players and resources involved in each level and ensuring that the proposed models accommodate adequate business models able to support the contribution of all the resources in the system, from the largest to the smaller ones. The proposed market models are integrated in MASCEM (Multi- Agent Simulator of Competitive Electricity Markets), using the multi agent approach advantages for overcoming the current inadequacy and significant limitations of the presently existing electricity market simulators to deal with the complex electricity market models that must be adopted.

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The study of electricity markets operation has been gaining an increasing importance in last years, as result of the new challenges that the electricity markets restructuring produced. This restructuring increased the competitiveness of the market, but with it its complexity. The growing complexity and unpredictability of the market’s evolution consequently increases the decision making difficulty. Therefore, the intervenient entities are forced to rethink their behaviour and market strategies. Currently, lots of information concerning electricity markets is available. These data, concerning innumerous regards of electricity markets operation, is accessible free of charge, and it is essential for understanding and suitably modelling electricity markets. This paper proposes a tool which is able to handle, store and dynamically update data. The development of the proposed tool is expected to be of great importance to improve the comprehension of electricity markets and the interactions among the involved entities.

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Electricity Markets are not only a new reality but an evolving one as the involved players and rules change at a relatively high rate. Multi-agent simulation combined with Artificial Intelligence techniques may result in sophisticated tools very helpful under this context. Some simulation tools have already been developed, some of them very interesting. However, at the present state it is important to go a step forward in Electricity Markets simulators as this is crucial for facing changes in Power Systems. This paper explains the context and needs of electricity market simulation, describing the most important characteristics of available simulators. We present our work concerning MASCEM simulator, presenting its features as well as the improvements being made to accomplish the change and challenging reality of Electricity Markets.

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In this paper we study the optimal natural gas commitment for a known demand scenario. This study implies the best location of GSUs to supply all demands and the optimal allocation from sources to gas loads, through an appropriate transportation mode, in order to minimize total system costs. Our emphasis is on the formulation and use of a suitable optimization model, reflecting real-world operations and the constraints of natural gas systems. The mathematical model is based on a Lagrangean heuristic, using the Lagrangean relaxation, an efficient approach to solve the problem. Computational results are presented for Iberian and American natural gas systems, geographically organized in 65 and 88 load nodes, respectively. The location model results, supported by the computational application GasView, show the optimal location and allocation solution, system total costs and suggest a suitable gas transportation mode, presented in both numerical and graphic supports.

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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

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Dissertação para obtenção do grau de Mestre em Engenharia Civil na Área de Especialização em Edificações

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Projeto de Intervenção apresentado à Escola Superior de Educação de Lisboa para a obtenção de grau de Mestre em Didática da Língua Portuguesa no 1º e 2º CEB

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Dissertação apresentada à escola Superior de Educação de Lisboa para obtenção de grau de mestre em Educação Matemática na Educação Pré-Escolar e nos 1º e 2º Ciclos do Ensino Básico

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Projeto para obtenção do grau de Mestre em Engenharia Informática e de Computadores