884 resultados para CAVE, Virtual Reality Environment, 3D, Stereoscopic simulator
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Pós-graduação em Desenvolvimento Humano e Tecnologias - IBRC
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
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A utilização de Ambientes Virtuais de Aprendizagem (AVAs) torna-se, a cada dia, mais evidente em diversas instituições de ensino público e particular, assim como em órgãos governamentais e privados. Várias versões de AVAs encontram-se disponíveis para utilização gratuita, cada uma com suas idiossincrasias. No Brasil, já são quase mil instituições que utilizam referidos ambientes. Esses números expressam a necessidade de investimentos e de novas pesquisas na área. Este trabalho especifica e desenvolve um AVA que tem por objetivo minimizar problemas encontrados em muitas abordagens de ambientes atualmente disponíveis, propondo um ambiente denominado de Ambiente Colaborativo de Aprendizagem Interdisciplinar (ACAI), desenvolvido para disponibilizar uma infra-estrutura que permita integrar os conceitos de: trabalho colaborativo, comunidades virtuais de aprendizagem, interdisciplinaridade, adaptação de interfaces e, de forma complementar, permitir a geração de recomendações automáticas a seus usuários baseadas em seus perfis.
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Esta dissertação aborda metodologias de criação de objetos tridimensionais destinados a ambientes virtuais interativos, contextualizando as principais técnicas de implementação computacional envolvidas no processo. Foi utilizado como estudo de caso o Sistema de Instruções Técnicas Virtuais, desenvolvido pelo Laboratório de Realidade Virtual (LaRV) da Universidade Federal do Pará (UFPA) para as Centrais Elétricas do Norte do Brasil S/A (Eletronorte), como recurso de treinamento e simulação de procedimentos de manutenção e operação da Usina Hidrelétrica de Tucuruí.
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Os Sistemas de Detecção e Prevenção de Intrusão (Intrusion Detection Systems – IDS e Intrusion Prevention Systems - IPS) são ferramentas bastante conhecidas e bem consagradas no mundo da segurança da informação. Porém, a falta de integração com os equipamentos de rede como switches e roteadores acaba limitando a atuação destas ferramentas e exige um bom dimensionamento de recursos de hardware como processamento, memória e interfaces de rede de alta velocidade, utilizados para implementá-las. Diante de diversas limitações deparadas por pesquisadores e administradores de redes, surgiu o conceito de Rede Definida por Software (Software Defined Network – SDN), que ao separar os planos de controle e de dados, permite adaptar o funcionamento da rede de acordo com as necessidades de cada um. Desta forma, devido à padronização e flexibilidade propostas pelas SDNs, e das limitações apresentadas dos IPSs, esta dissertação de mestrado propõe o IPSFlow, um framework que utiliza uma rede baseada na arquitetura SDN e o protocolo OpenFlow para a criação de um IPS com ampla cobertura e que permite bloquear um tráfego caracterizado pelos IDS(s) como malicioso no equipamento mais próximo da origem. Para validar o framework, experimentos no ambiente virtual Mininet foram realizados utilizando-se o Snort como IDS para analisar tráfego de varredura (scan) gerado pelo Nmap de um host ao outro. Os resultados coletados apresentam que o IPSFlow funcionou conforme planejado ao efetuar o bloqueio de 85% do tráfego de varredura.
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This article aims to contribute to the process of inclusion of students with disabilities in regular schools by reporting the results of a survey that aimed to verify whether Learning Objects (LO) are efficient tools in constructing teaching and learning of subject content within the inclusive education context. Participant, tutor and trainer experiences of a distance learning Ministry of Education (MEC) course on Assistive Technology were analyzed. The course was offered to public schools teachers from all over the country. The course activities were recorded in a Virtual Learning Environment (VLE) called TelEduc, along with group reports of course participants. Three categories were selected for data analysis: a) interactivity and feedback from the team trainer; b) applicability of the content covered in the course, and c) new learning. The results showed that LO can promote the learning of subject content. Having been designed as educational resources to support teaching and learning, they can enhance educational inclusion of people with disabilities. As for the process of distance formation for teachers, the course contributed to consolidating sound and efficient training of participants by providing: a closer encounter with the world of technology, the possibility of integration of technology in the classroom; conducting theoretical and practical studies, appreciation of diversity and all students' potential; innovations in strategies and learning resources and reflective action.
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This research aims to investigate the possible causes for the dropout of participants under instruction in distance courses. Data gathered from the Specialization Course in Specialized Educational Support Services - SES, sponsored by the Department for Continuing Education, Literacy and Diversity of the Ministry of Education - SECAD / MEC - and the Open University of Brazil – OUB, will be analyzed. The objective of the course is to graduate teachers who work in classrooms equipped with multifunctional resources in regular schools to give specialized educational support for students with special educational needs marked by disabilities, global development disorders and high abilities/highly gifted students. In order to analyze dropout data in the first semester of the ongoing course, a sample of 1349 participants enrolled in the distance course was considered; 216 of these had their enrollment cancelled on request or because they stopped accessing the Virtual Learning Environment - VLE / Teleduc Platform showing no interest in the course. However, the information below aims to present and discuss only the tabulated data of the 98 participants who requested to have their enrollment officially cancelled by submitting the online dropout term. The findings showed the main reasons for dropping out were personal problems, lack of time to commit to an ongoing distance course, difficulty using ICT and the tools available in the VLE. The research also highlighted the importance of developing digital inclusion initiatives as well as on-site supporting poles as a way to soften the barriers of technological accessibility and the dropout rate in this kind of courses.
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The aim of this study was to evaluate the effects of virtual reality and strength training on the balance, fear of falling and handgrip strength of older women with a history of falls. The fear of falling, mobility and grip strength were evaluated in 11 elderly fallers (72.4 ± 5.2 years). The faller group was submitted to 12 weeks of virtual reality and muscle strength training. The results showed improvement in mobility (p = 0.0004) and in the fear of falling (p = 0.002). No significant difference was observed for hand grip strength. It can be concluded that virtual reality and muscle strength interventions are beneficial for mobility and fear of falling in older women with a history of falls.
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This work includes an analysis about the distance learning Online. By bibliographic researches were was observed some Distance Learning peculiarities in Brazil, since its implementation until the present days. Was considered aspects of activities the teachers, main problems, advantages, needed resources for implementation the distance learning course and the approach on a virtual learning environment. (TelEduc) The text was written from books, articles and web pages related to Online distance learning in order to provide the reader an overview of this teaching modality increasingly growing in Brazil
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Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
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In inclusive school there are many students and some with disabilities. One of the dimensions of human development of all people's is the sexuality, although there are erroneous beliefs about the relationship sexuality and disability. Teachers must be prepared to deal with the sexuality of their students with disabilities in school, and proposals of education in the form of distance education has been an alternative to the training. This article relate an educational proposal for teachers, linked to a part of the activities undertaken in the discipline "Human Development and Family" on a course of specialization in Special Education in Distance Education mode. Describes an educational object named "Game: challenges and actions in school" , that presented four situations on behaviors involving sexuality of students: question about sexuality, masturbation in the classroom, dating from students and discrimination an obese colleague. In each one, there was potential actions to the teachers choose and, consequently, its unfolding. The choice of actions would lead to the end of a "teacher profile", offering reflections. Teachers reported positive unsolicited comments about the content of the game. It is concluded that the proposal is an important educational tool used in the Virtual Learning Environment that can assist in teacher training courses in sexuality education.
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Visualisation in the field of dentistry has nor, thus far, reached the same development as other medical fields. Potential applications of visualisation techniques in this area, however, are many, ranging from educational displays to training for delicate procedures. This paper reports on the investigation of techniques for handling three-dimensional models of teeth, aiming at investigation of dental structures. An algorithm was implemented for this purpose, which reconstructs three-dimensional teeth models from two-dimensional contour slices. Results employing various data sets are presented, including the output of VRML models for exploration.
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Pós-graduação em Educação - FCT