Utilização do protocolo anycast em ambientes virtuais distribuídos visando à escalabilidade do sistema

Distributed Virtual Environments (DVE) allow multiple users interact with a virtual world by sharing, manipulating objects. Each user has his/her own vision of this world and every changes of state of the environment are distributed among other users. Due to technological constraints, most systems for distributed virtual environments support a limited number of users. The major limitation for development of DVE scale are imposed by the communication system. As the number of users grows, the amount of bandwidth required to exchange information in real time among stations to upgrade the environment and keep it in a consistent state for all connected users. Based on this situation is proposed a framework that uses the protocol anycast in the application layer that provides a load balancing among servers in the region and aims at reducing the latency of message delivery between participants selecting the DVE server best suited for the region participant to connect to the environment

Bancos de capacitores se corrente de Inrush

This work discusses about the effects and methods of control and elimination of the currents transients generated by switching capacitor banks, this currents are called inrush currents. Capacitor banks are widely used to compensate a low power factor generated by the widespread use of inductive loads. Currently many of these banks are automatic and therefore the capacitive cells are connected and disconnected according to the inductive loads on the network. However when connecting a capacitor bank to a bus can generate currents transients generated by electromagnetic transients. Aspects of the network, for example, the existence of a bank already connected to the bus, can influence the intensity of this phenomenon. This paper discusses some characteristics of the capacitors and the network to justify and explain the appearance of these transients and discusses its effects on the network and to other equipment. It is concluded that the main cause of this phenomenon is the voltage difference between the capacitor to be connected to the network and the bus, the results of the study were the bases to discuss the traditional methods to mitigate these currents and therefore its negative effects. Although in this paper is yet developed a method of electronic switching that can greatly reduce these transients

Relações públicas e serviços virtuais: a comunicação entre as corporações da internet e o cibernauta

The objective of this study is to adress the action possibilities of the Public Relations professional in management of communication between the virtual services companies and their customers – the cybernauts. For this purpose, a bibliographical research was made about the cyberspace, Internet environment, as well as the cyberculture and the on-line consumer public. It was also studied the possible areas of Public Relations's action, their work tools and means of communication with the customer, in order to verify the specificities of communication mediated by new technologies. Based on these concepts, it was possible to propose an action of this professional in the organizations called dotcom, in order to contribute to the management of the communication flow between companies and this “invisible” public, which relates virtually to the organization, establishing different modes of interaction in relation to tradicional customers, requiring different strategies of relashionsip

A inclusão financeira no Brasil: uma análise da contribuição dos bancos sociais

O objetivo maior deste trabalho é contribuir para se diagnosticar qual a conjuntura atual do setor microfinanceiro no Brasil. Para tanto, inicia uma exposição histórica, com o intuito de demonstrar quais as variáveis condicionantes de nosso estágio atual, chegando até ao último programa lançado pelo governo federal com a finalidade de fomentar os serviços financeiros entre a população de baixa renda - vale ressaltar, o Programa Nacional de Microcrédito Produtivo Orientado (PNMPO). A partir dessa fase, inicia uma exposição dos novos obstáculos, criados, paradoxalmente, no seio do PNMPO e ligados ao excesso de regulação, a serem transpostos para se desenvolver a indústria de microfinanças no país, propondo soluções para estes. Por fim, faz um estudo de caso de uma inovação social, ligada à economia solidária, que apresenta ótimos resultados no que tange a democratização dos serviços microfinanceiros, ocorrida em Fortaleza/CE: o Banco Palmas

O aprimoramento de um software de estúdio virtual por meio de técnicas de matting digital e registro de objetos virtuais

A virtual studio system can use technologies as augmented reality and digital matting to decrease production costs at the same time it provides the same resources of a conventional studio. With this, it’s possible for the current studios, with low cost and using conventional devices, to create productions with greater image quality and effects. Some difficulties are recurrent in virtual studio applications that use augmented reality and digital matting. The virtual objects registration in augmented reality techniques suffer from problems caused by optical distortions in the camera, errors in the marker tracking system, lack of calibration on the equipments or on the environment (lighting, for example), or even by delays in the virtual objects display. On the other hand, the digital matting’s main problem is the real-time execution to preview the scene, which must have optimized processing speed at the same time while maintain the best image quality possible. Taking the given context into consideration, this work aims to give continuity to a virtual studio system called ARStudio, by enhancing digital matting, virtual objects registration and introducing a segmentation based on depth map, yet adding better control over functionalities previously implemented

Estudo das representações do mundo do trabalho de alunos do meio rural através do uso de mídias virtuais

This paper aims to present the representations of the working world of high school students, the State School Prof. Dr. João Deoclécio da Silva Ramos, Distrito de Talhado, São José do Rio Preto (SP), through the use of virtual media, specifically the Blog de Aula – Mutirão de Sociologia (www.mutiraodesociologia.com.br). Understanding the representations of the world work enables students to think of a profession which identify themselves, and stimulate reflection as future professionals. The virtual media, especially blogs, allow students to express their ways of living and thinking the world of work. In the context of the city of Rio Preto, is especially relevant these representations of the world’s rural work, so this project is to collaborate in the development of research concerned with the description and understanding of processes that involve relationships between work, education and rural.

Formação Reflexiva do Professor em Contextos Virtuais: A Experiência do Projeto Teletandem Brasil

This article chiefly aims at discussing issues concerning reflective teacher education for and in virtual environments for language learning. Given the need for research on reflective practice in new virtual environments, we present the experience of pedagogical supervision through mediation in the virtual context for collaborative learning in teletandem. Some research results in this context, such as in Salomão (2008), Kfouri-Kaneoya (2008), Cândido (2010) and Silva (2010), show how favorable and conducive to the development of reflective pre-service teacher education it seems to be, as it emphasizes the co-construction of knowledge in a dynamic relationship between theory and practice.

Alocação de bancos de capacitores em sistemas de distribuição radiais usando busca dispersa

Pós-graduação em Engenharia Elétrica - FEIS

Heurística especializada aplicada na alocação ótima de bancos de capacitores em sistemas de distribuição radial

Pós-graduação em Engenharia Elétrica - FEIS

Tecnologias virtuais e análise videográfica: o YouTube® como recurso de pesquisa para compreensão sobre a imagem do idoso brasileiro = Virtual technologies and videographic analysis : YouTube® as research resource for understanding about brazilian elderly imagem

Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)

O professor que ensina matemática formado em ambientes virtuais de aprendizagem à distância

Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)

Aspectos do real maravilhoso no romance Pedro Páramo, de Juan Rulfo

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A problemática trazida pelos bancos de perfis genéticos criminais no Brasil

Pós-graduação em Direito - FCHS

Uma metodologia para a geração de conteúdos digitais baseado na utilização de estudios virtuais com realidade aumentada

Pós-graduação em Televisão Digital: Informação e Conhecimento - FAAC