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Facebook3d

Rodrigues, Diego Adalberto de Jesus
Fonte: Universidade da Madeira Publicador: Universidade da Madeira
Tipo: Dissertação de Mestrado
Publicado em //2009 Português
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INTRODUCTION With the advent of Web 2.0, social networking websites like Facebook, MySpace and LinkedIn have become hugely popular. According to (Nilsen, 2009), social networking websites have global1 figures of almost 250 millions unique users among the top five2, with the time people spend on those networks increasing 63% between 2007 and 2008. Facebook alone saw a massive growth of 566% in number of minutes in the same period of time. Furthermore their appeal is clear, they enable users to easily form persistent networks of friends with whom they can interact and share content. Users then use those networks to keep in touch with their current friends and to reconnect with old friends. However, online social network services have rapidly evolved into highly complex systems which contain a large amount of personally salient information derived from large networks of friends. Since that information varies from simple links to music, photos and videos, users not only have to deal with the huge amount of data generated by them and their friends but also with the fact that it‟s composed of many different media forms. Users are presented with increasing challenges, especially as the number of friends on Facebook rises. An example of a problem is when a user performs a simple task like finding a specific friend in a group of 100 or more friends. In that case he would most likely have to go through several pages and make several clicks till he finds the one he is looking for. Another example is a user with more than 100 friends in which his friends make a status update or another action per day...

Galerias e mundos virtuais na educação : aplicação à história da arte

Martins, Maria da Conceição de Magalhães
Fonte: Universidade Aberta de Portugal Publicador: Universidade Aberta de Portugal
Tipo: Dissertação de Mestrado
Publicado em //2012 Português
Relevância na Pesquisa
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Dissertação de Mestrado em Expressão Gráfica e Audiovisual apresentada à Universidade Aberta; As tecnologias integradas no currículo permitem uma regeneração do ensino e das práticas pedagógicas. Ao utilizar a multimédia no ensino estamos a contribuir para a modernização dos métodos de estudo. Neste projeto ao utilizarem-se aplicações de multimédia específicas foi com o intuito de proporcionar aos alunos situações motivacionais e promotoras de uma aprendizagem significativa dos conteúdos abordados na disciplina de História e Cultura das Artes. É ainda propósito deste projeto estudar e compreender a intercessão das novas tecnologias, sobretudo os ambientes tridimensionais no processo de ensino aprendizagem. Neste sentido, aplicou-se a tecnologia VRML/X3D como apoio à transmissão de conhecimentos na História da Arte. Para tal, criou-se uma aplicação que permitiu fazer o estudo da usabilidade, funcionalidade e acessibilidade deste ambiente 3D no âmbito educativo. Procurou-se com esta investigação, estudar o impacto pedagógico desta aplicação e averiguar se esta facilita a aquisição de conteúdos pedagógicos assim como, desenvolvimento de competência dos alunos, após a sua utilização. O resultado obtido nos exames nacionais constitui-se como indicador positivo a favor da utilização desta aplicação de multimédia...

Centro de interpretação virtual : Castrum Quiffiones

Pacheco, António Benjamim Campos
Fonte: Universidade Aberta de Portugal Publicador: Universidade Aberta de Portugal
Tipo: Dissertação de Mestrado
Publicado em //2014 Português
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Dissertação de Mestrado em Expressão Gráfica e Audiovisual apresentada à Universidade Aberta; Esta investigação debruçou-se na análise e conceção de um protótipo de ambientes virtuais 3D aplicados à exploração temática de uma estação arqueológica, para o período da Idade do Ferro (Cultura Castreja) com eleva-ção para a Romanização existente na área metropolitana do Porto, mais espe-cificamente, o Castro de Guifões (CASTRUM QUIFFIONES).; This research has looked at the analysis and design of a prototype 3D virtual environment applied to the thematic exploration of an archaeological sta-tion, for the period of the Iron Age (Castro Culture) elevation for the existing Romanization, in the Porto metropolitan area, more specifically, Castro Guifões (CASTRUM QUIFFIONES).

High-resolution digital 3D models of Algar do Penico Chamber: limitations, challenges, and potential

Silvestre, Ivo; Rodrigues, J. I.; Figueiredo, Mauro; Veiga-Pires, C.
Fonte: IJS Publicador: IJS
Tipo: Artigo de Revista Científica
Publicado em //2015 Português
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The study of karst and its geomorphological structures is important for understanding the relationships between hydrology and climate over geological time. In that context, we conducted a terrestrial laser-scan survey to map geomorphological structures in the karst cave of Algar do Penico in southern Portugal. The point cloud data set obtained was used to generate 3D meshes with different levels of detail, allowing the limitations of mapping capabilities to be explored. In addition to cave mapping, the study focuses on 3D-mesh analysis, including the development of two algorithms for determination of stalactite extremities and contour lines, and on the interactive visualization of 3D meshes on the Web. Data processing and analysis were performed using freely available open-source software. For interactive visualization, we adopted a framework based on Web standards X3D, WebGL, and X3DOM. This solution gives both the general public and researchers access to 3D models and to additional data produced from map tools analyses through a web browser, without the need for plug-ins.

Depósitos fosfáticos marinhos na costa sudeste e sul do Brasil: potenciais áreas de ocorrência identificadas com dados de retroespalhamento acústico do fundo e sedimentológicos analisados sobre mapa batimétrico 3D

Pinho,Marcelo Peres de; Madureira,Lauro Saint Pastous; Calliari,Lauro Júlio; Griep,Gilberto Henrique; Cooke,Caroline Vieira
Fonte: Sociedade Brasileira de Geofísica Publicador: Sociedade Brasileira de Geofísica
Tipo: Artigo de Revista Científica Formato: text/html
Publicado em 01/03/2011 Português
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Dados batimétricos, sedimentológicos e de retroespalhamento acústico do fundo foram integrados em um SIG (Sistema de Informação Geográfica) 3D. Ecossondas operando na frequência de 38 kHz foram utilizadas para coletar dados da costa brasileira, ao longo de 14.596 milhas náuticas. As operações ocorreram sobre a plataforma continental, talude e região oceânica adjacente, entre Chuí-RS (34°S) e o Cabo de São Tomé-RJ (22°S), Brasil. Os dados batimétricos obtidos por estas ecossondas durante seis cruzeiros de prospecção pesqueira foram complementados com informações de altimetria por satélite e outros cruzeiros de oportunidade, permitindo a criação de uma malha batimétrica com 5.397.090 pontos. A partir desta malha, foi gerada uma representação 3D do fundo marinho utilizando a linguagem para descrição de ambientes tridimensionais interativos X3D. Feições de fundo como o Cone e o Terraço do Rio Grande, o Platô de São Paulo, além de outras, puderam ser identificadas nestes mapas batimétricos. O SIG 3D permitiu realizar o cruzamento das informações de retroespalhamento acústico e sedimentológicos sobre os mapas batimétricos, auxiliando na identificação das regiões com características típicas de depósitos fosfáticos. O SIG 3D mostrou-se vantajoso em relação às representações bidimensionais...

Direito tributário internacional do Brasil

Xavier, Alberto
Fonte: Forense Publicador: Forense
Tipo: Livro
Português
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Divulgação dos SUMÁRIOS das obras recentemente incorporadas ao acervo da Biblioteca Ministro Oscar Saraiva do STJ. Em respeito à lei de Direitos Autorais, não disponibilizamos a obra na íntegra.; Localização na estante: 336.2:341 X3d

Um servidor de dados multimídia para sistemas virtuais de ensino

Soares Souza, Armando; da Fonseca de Souza, Fernando (Orientador)
Fonte: Universidade Federal de Pernambuco Publicador: Universidade Federal de Pernambuco
Tipo: Outros
Português
Relevância na Pesquisa
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O grande diferencial dos LMS (Learning Management System) mais sofisticados está no fato deles disponibilizarem uma maior aproximação e facilidade de entendimento do conteúdo gerenciado e disponibilizado ao aluno ou aprendiz. Para isso, o uso de recursos multimídia como áudio, imagens, vídeos e objetos de realidade virtual, inseridos no conteúdo oferecido, permite um aprendizado mais agradável e mais atrativo para o aluno que usa o LMS com estes recursos. Devido à grande dificuldade de se manipular, inserir e recuperar tais objetos multimídia e de realidade virtual nos conteúdos gerenciados por LMS, sentiu-se a necessidade de especificar e implementar um servidor de dados que facilitasse tal manipulação integrada a um LMS O objetivo principal deste trabalho é desenvolver um Servidor de Dados para manipulação e gerenciamento de objetos multimídia e objetos de realidade virtual em um LMS, tendo sido escolhido como estudo de caso o LMS AMADEUS-MM. O referido servidor tem como finalidade principal o gerenciamento de conteúdo multimídia em ambientes virtuais de ensino, com particular eficiência no armazenamento e transferência de dados multimídia (imagens, áudios, vídeos) e mundos de realidade virtual. O Servidor de Dados Multimídia provê uma estrutura de dados para o gerenciamento do conteúdo multimídia em um ambiente virtual de ensino...

VEPersonal uma infra-estrutura para geração e manutenção de ambientes virtuais adaptativos

Salerno de Aquino, Marcus; César Frery Orgambide, Alejandro (Orientador)
Fonte: Universidade Federal de Pernambuco Publicador: Universidade Federal de Pernambuco
Tipo: Outros
Português
Relevância na Pesquisa
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Os avanços das técnicas de Realidade Virtual têm contribuído para que os Ambientes Virtuais se tornem mais dinâmicos e mais realistas. Além disso, essas técnicas são importantes para tornar tais sistemas mais próximos da realidade dos usuários. Técnicas para geração de ambientes virtuais que se adaptam ao perfil do usuário têm sido desenvolvidas, incorporando procedimentos de acompanhamento de ações e modificando o ambiente em função deste comportamento. Esta tese apresenta o sistema VEPersonal (Personalized Virtual Environment), uma infra-estrutura para gerenciamento de componentes de realidade virtual, que permite adaptar ambientes virtuais, em tempo real, em função do nível de conhecimento do usuário ou de suas necessidades. Tais componentes são armazenados em um SGBD com suporte a XML para permitir a reutilização na construção de novos mundos virtuais. Cada objeto do mundo pode conter vários níveis de informação que são apresentados ao usuário de acordo com o seu nível de conhecimento ou a sua capacidade de aprendizado. Uma sociedade de agentes monitora as ações do usuário, calcula as atualizações necessárias e determina quais objetos e qual o nível de detalhes devem ser apresentados ao mundo virtual do usuário corrente. Um modelo do usuário e um modelo do ambiente mantêm informações atualizadas sobre o perfil do usuário e o ambiente utilizado...

An X3D Framework for Developing Adaptive Virtual Environments

Lopes, Luiz Fernando Braga; Universidade Federal de Uberlândia; Dias Júnior, José Barbosa; Universidade Federal de Uberlândia; Damasceno, Eduardo Filgueiras; Universidade Federal de Uberlândia; Cardoso, Alexandre; Universidade Federal de Uberlândia;
Fonte: Editora da UFLA Publicador: Editora da UFLA
Tipo: info:eu-repo/semantics/article; info:eu-repo/semantics/publishedVersion; Peer-reviewed Article Formato: application/pdf
Publicado em 26/08/2015 Português
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Developing CIMA-basee cyberinfrastructure for remote access to scientific instruments and collaborative e-research

Pearse, M.; Du Boulay, D.; Chee, C.; Chiu, K.; Coddington, P.; Gerson, A.; King, T.; McMullen, D.; Quilici, R.; Turner, P.; Wendelborn, A.; Wyatt, M.; Zhang, D.
Fonte: ASC; Australia Publicador: ASC; Australia
Tipo: Conference paper
Publicado em //2007 Português
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An infrastructure for remote instrument access, data acquisition and data management is being developed for e-Research. The Common Instrument Middleware Architecture (CIMA) is being used to provide a scalable and extensible basis for the cyberinfrastructure, and X-ray diffraction is targeted as an ideal development domain. Australian research is enhancing the CIMA model to enable federated Grid storage via SRB, and the use of the Kepler workflow system. Kepler has been introduced to enable automated data management, and the facile extraction and generation of instrument and experimental metadata. The system permits real-time deposition of experimental data into an SRB data store using a schema that allows for searching on the basis of metadata or user supplied annotations, image file previewing and data management and download. The CCLRC scientific metadata model is being adopted for metadata definition. In addition to monitoring, CIMA is being further extended to support instrument control, and is being embedded as a component in a feature rich portal for remote instrument access. The architecture supports remote access to multiple instruments from a single portal. The use of Pushlet and AJAX technologies has been introduced for push based portlet refresh and updating. An X3D based 3D virtual representation of the instrument provides data collection simulation and (pseudo) real time instrument representation. A tool for multi-user collaborative image evaluation is being developed for the infrastructure system.

Legend and virtual reconstruction: Porsenna’s mausoleum in X3D

Fonte: Athens : Hellenic Ministry of Culture Publicador: Athens : Hellenic Ministry of Culture
Tipo: Artikel
Português
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Design and implementation of a DSP-based control interface unit (CIU)

Kavousanos-Kavousanakis, Andreas
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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Approved for public release, distribution is unlimited; This research involves the development of a human-body motion tracking system constructed with the use of commercial off-the-shelf (COTS) components. The main component of the system investigated in this thesis is the Control Interface Unit (CIU). The CIU is a component designed to receive data from the magnetic, angular rate, and gravity (MARG) sensors and prepare them to be transmitted through a wireless configuration. A simple and effective algorithm is used to filter the sensor data without singularities, providing the measured attitude in the quaternion form for each human limb. Initial calibration of the MARG sensors is also performed with the use of linear calibrating algorithms. The testing and evaluation of the whole system is performed by MATLABʼ and SIMULINKʼ simulations, and by the realtime visualization using a human avatar designed with the X3D graphics specifications. Through this research, it is discovered that the MARG sensors had to be redesigned to overcome an erratum on the Honeywell magnetometer HMC1051Z data sheet. With the redesigned MARG sensors, the testing results showed that the CIU was performing extremely well. The overall motion tracking system is capable of tracking human body limb motions in real time.

Implementation of a human avatar for the MARG project in networked virtual environments

Yildiz, Faruk
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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Approved for public release; distribution is unlimited.; The objective of the ongoing MARG project is to animate human motions captured by 15 MARG sensors in wireless networked virtual environment (NVES). Three avatars were developed previously, but none of them met all the desired requirements. The first one was overly simplistic and did not implement H-Anim standards. The other two were created using laser-scanned data and followed the H-Anim standards, but one had its adjacent joints broken and the other was capable of rotating only one joint. Therefore, the cartoon-type humanoid, Andy, was developed to meet the needs of the MARG project. The humanoid Andy implements H-Anim standards using built-in X3D humanoid nodes and is capable of controlling all its 15 joints in NVES. Another need of the MARG project was a wireless network interface for real-time data streaming. A concurrent client-server program implementing multicasting using TCP and UDP protocols was developed for this purpose. Using WiSER2400.IP serial adapters between the MARG sensors and the server program adds a wireless capability to the project. The server program converts the raw MARG sensor data to quaternions using the Quest algorithm. Multiple clients are supported by the system. Each client program receives the motion data and updates the humanoid Andy.

Evaluating the effectiveness of waterside security alternatives for force protection of Navy ships and installations using X3D graphics and agent-based simulation

Sullivan, Patrick Joseph
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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Approved for public release, distribution unlimited; The individuals charged with the task of planning, developing and implementing force protection measures both at the unit and installation level must consider numerous factors in formulating the best defensive posture. Currently, force protection professionals utilize multiple sources of information regarding capabilities of systems that are available, and combine that knowledge with the requirements of their installation to create an overall plan. A crucial element missing from this process is the ability to determine, prior to system procurement, the most effective combination of systems and employment for a wide range of possible terrorist attack scenarios. This thesis is inspired by the work done by James Harney, LT, USN (2003). The thesis will expand the Anti-Terrorism Force Protection Tool developed during the original thesis by including the capability of testing force protection measures in multiple scenarios by utilizing models of force protection equipment and forces, virtual worlds of existing naval facilities, and terrorist agents that exhibit intent and behavioral characteristics which can test the effectiveness of the force protection equipment used. The result of this work is a scalable and repeatable methodology for generating large-scale...

Effectiveness evaluation of force protection training using computer-based instruction and X3D simulation

Cruzbaez, Wilfredo
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
16.648749%
Due to growing operational constraints accelerated by the Global War on Terror, the United States Navy is looking for alternative methods of training to maintain its force in a high status of readiness. Updates in technology over the last decade have prompted Navy officials to take the initiative to update its training technologies. Computer-Based Instruction provides alternative means of training so that the training of war-fighters can be accomplished efficiently and effectively, saving the U.S. Navy time and resources while maintaining a high state of readiness. The goal of this thesis is to combine the principles of Instructional Design Systems (ISD) technology and advanced Simulation in order to produce a multimedia training capability for Navy and Marine Corps Officers. Specifically this thesis applies ISD principles to engineer and improve the Anti-Terrorism Force Protection (AT/FP) Officer Course Level II (ATO Level II Course) lessons for use by Navy and Marine Corps officers. The SavageStudio scenario generation application, originally designed for assessment of force protection measures in a port environment, is used to allow students to develop simulation lessons for this course. The final product of this thesis is a training course consisting of two lessons combining Computer- Based Training and Simulation providing interactive lessons and exercises...

Integration of robotics and 3D visualization to modernize the Expeditionary Warfare Demonstrator (EWD)

Fitzpatrick, Christian R.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
16.648749%
Approved for public release, distribution unlimited; In the summer of 2008, the Commandant of the Marine Corps (CMC) released a message to all Marines and Sailors detailing plans to revitalize U.S. naval amphibious competency. Current responsibilities in Iraq and Afghanistan have significantly reduced available training time causing overall amphibious readiness to suffer. In response, this thesis evaluates 3D visualization techniques and other virtual environment technologies available to support these mission-critical training goals. The focus of this research is to modernize the Expeditionary Warfare Demonstrator (EWD) located aboard Naval Amphibious Base (NAB) Little Creek, Virginia. The EWD has been used to demonstrate doctrine, tactics, and procedures for all phases of amphibious operations to large groups of Navy, Marine Corps, Joint, Coalition and civilian personnel for the last 55 years. However, it no longer reflects current doctrine and is therefore losing credibility and effectiveness. In its current configuration, the EWD is limited to a single training scenario since the display’s ship models rely on a static pulley system to show movement and the terrain display ashore is fixed. To address these shortfalls, this thesis first recommends the usage of the wireless communication capability within Sun’s Small Programmable Object Technology (SunSPOT) to create robotic vehicles to replace the current ship models. This enables large-group visualization and situational awareness of the numerous coordinated surface maneuvers needed to support Marines as they move from ship to shore. The second recommendation is to improve visualization ashore through the creation of Extensible 3D Graphics (X3D) scenes depicting high-fidelity 3D models and enhanced 3D terrain displays for any location. This thesis shows how to create these scenes and project them from overhead in order to modernize the gymnasium-sized EWD into an amphibious wargaming table suitable for both amphibious staff training and operational planning. Complimentary use of BASE-IT projection tables and digital 3D holography can further provide smallgroup...

Interoperability, data control and battlespace visualization using XML, XSLT and X3D

Neushul, James D.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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Approved for public release, distribution unlimited; This work represents the realization of Network-Centric goals of interoperability, information management, systems integration and cohesive battlespace visualization using networked computer technology. The application of structured data methodologies using the E xtensible Markup Language (XML) allows organizations and systems to exchange and process battlespace information cooperatively. The practical application of this technology is demonstrated. Governance of information systems using structured data and the rejection of proprietary, application specific solutions is a leadership responsibility that is defined as Data Control. XML is presented as a leadership control measure that can be used to achieve Network-Centricity on the battlefield. The fundamental principles of XML application development are presented in the context of warfighting. Exemplars address a cross-section of battlespace applications. The visualization of the physical battlefield is demonstrated with network delivered 3D terrain views. Geodesy and position reporting is addressed using an XML defined data structure to enforce interoperability. An XML expression of the Battlespace Generic Hub is applied to joint and multilateral interoperability and information exchange. An approach to the effective employment of multiple different...

3D battlespace visualization using operational planning data

Hutton, Claude O.
Fonte: Monterey, California. Naval Postgraduate School Publicador: Monterey, California. Naval Postgraduate School
Tipo: Tese de Doutorado
Português
Relevância na Pesquisa
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Approved for public release, distribution unlimited; In modern combat operations today the display of operational data is still tied to stove-piped and proprietary systems and software. Additionally, combat systems are still using 2D displays of the battlefield in order to reflect a picture of the battlefield to the warfighter. Stepping away from stove-piped and proprietary systems and reflecting a 3D picture of the battlefield is the direction that this thesis research explores. Research is conducted to explore technologies needed to provide operational forces with web-based 3D visualizations of operational data. Technologies used in this research are XML, XSLT, JAVA, X3D and VRML. A prototype application is developed that allows for the 3D display of operational data. The research demonstrates how operational data can be stored in a database and accessed through a web-based 3D representation of the area of operation. Data sets used in this prototype include Digital Terrain Elevation Data and operational planning data. Access to the data is provided through a web-based interface. The web-based view of the data provides both 2D and 3D views. This research shows that current open source technology can provide the warfighter with a web-based 3D view of the battlefield.

Integration of Robotics and 3D Visualization to Modernize the Expeditionary Warfare Demonstrator (EWD)

Christian Fitzpatrick
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Português
Relevância na Pesquisa
16.648749%
Sponsored Report (for Acquisition Research Program); In the summer of 2008, the Commandant of the Marine Corps (CMC) released a message to all Marines and Sailors detailing plans to revitalize U.S. naval amphibious competency. Current responsibilities in Iraq and Afghanistan have significantly reduced available training time causing overall amphibious readiness to suffer. In response, this thesis evaluates 3D visualization techniques and other virtual environment technologies available to support these mission-critical training goals. The focus of this research is to modernize the Expeditionary Warfare Demonstrator (EWD) located aboard Naval Amphibious Base (NAB) Little Creek, Virginia. The EWD has been used to demonstrate doctrine, tactics, and procedures for all phases of amphibious operations to large groups of Navy, Marine Corps, Joint, Coalition and civilian personnel for the last 55 years. However, it no longer reflects current doctrine and is therefore losing credibility and effectiveness. In its current configuration, the EWD is limited to a single training scenario since the display’s ship models rely on a static pulley system to show movement and the terrain display ashore is fixed. To address these shortfalls...

DIY X3D, Do It Yourself X3D Graphics!

Brutzman, Don
Fonte: Escola de Pós-Graduação Naval Publicador: Escola de Pós-Graduação Naval
Tipo: Conferência ou Objeto de Conferência
Português
Relevância na Pesquisa
17.267029%
Web2D 2014 Conference Vancouver Canada, 8-10 August 2014