This paper describes QEF a query evaluation framework designed to support complex applications on the grid. QEF has been extended to support querying within a number of different applications, including supporting scientific visualization and implementing a web service semantic search engine. Application requests take a form of a workflow in which tasks are represented as algebraic operators and specific data types are enveloped into a common tuple structure. The implemented system is automatically deployed into schedule grid nodes and autonomously manages query evaluation according to grid environment conditions. The generality of our approach has been tested with a number of applications leading to a full grid web service implementation available at http://codims.epfl.ch.

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<p>Com o avanço da tecnologia de telecomunicações entre dispositivos móveis e a redução dos custos de tais equipamentos, tornou-se popular a utilização da telefonia celular para transmissão de voz e para o entretenimento - em particular, para os jogos. O desenvolvimento de jogos para celular requer a utilização de uma plataforma específica de programação, tal como a plataforma Java Microedition (Java ME), que se encontra disponível gratuitamente na web. Este artigo apresenta um estudo sobre desenvolvimento de jogos para celular na plataforma Java ME e a implementação do jogo Batalha Terrestre que foi idealizado pelos autores. O jogo foi testado no emulador Java Wireless Toolkit 2.5.2 para CLDC, com dispositivo Default Color Phone. Espera-se que este trabalho contribua para aumentar o interesse dos estudantes no desenvolvimento de jogos para celular.</p>

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It is apparent that regulators, sponsors, athletes and sports organizations have become more and more concerned about doping control. Despite the investments made in the past few years, recent studies show that Brazil´s sports confederations have not systematized the doping control process nor have they yet dealt satisfactorily with problems to do with transparency with regard to disclosing the results of tests. This study puts forward an Information System to support the Confederations in reviewing and implementing antidoping measures and procedures. It is also hoped that the proposed integrated database of doping tests can help managers to draw up a public policy for this area.