16 research outputs found
Timing analysis of an embedded architecture for a real-time power line communications network
Tese de mestrado. Engenharia Electrotécnica e de Computadores (Área de especialização de Telecomunicações). Faculdade de Engenharia. Universidade do Porto, Instituto Superior de Engenharia. Instituto Politécnico do Porto.. 200
Collaborative Augmented Reality
Over the past number of years augmented reality (AR) has become an increasingly pervasive as a consumer level technology. The principal drivers of its recent development has been the evolution of mobile and handheld devices, in conjunction with algorithms and techniques from fields such as 3D computer vision. Various commercial platforms and SDKs are now available that allow developers to quickly develop mobile AR apps requiring minimal understanding of the underlying technology.
Much of the focus to date, both in the research and commercial environment, has been on single user AR applications. Just as collaborative mobile applications have a demonstrated role in the increasing popularity of mobile devices, and we believe collaborative AR systems present a compelling use-case for AR technology.
The aim of this thesis is the development a mobile collaborative augmented reality framework. We identify the elements required in the design and implementation stages of collaborative AR applications. Our solution enables developers to easily create multi-user mobile AR applications in which the users can cooperatively interact with the real environment in real time. It increases the sense of collaborative spatial interaction without requiring complex infrastructure. Assuming the given low level communication and AR libraries have modular structures, the proposed approach is also modular and flexible enough to adapt to their requirements without requiring any major changes
Telematics industry dynamics and strategies for converging technologies
Thesis (S.M.M.O.T.)--Massachusetts Institute of Technology, Sloan School of Management, Management of Technology Program, 2004.Includes bibliographical references.The Telematics Industry faces tremendous challenges for growth. Regardless of the efforts and investment from vehicle manufacturers and suppliers, telematics has not been that profitable industry that many analyst forecasted five years ago; a 40 billion industry by 2003. This paper presents an analysis of the dynamics of the telematics industry and emphasizes on factors affecting the diffusion of telematics innovation. These factors are related to openness of telematics systems and establishment of standards, network externalities effects and attractiveness of complementors, customer's willingness to pay, telematics services pricing, and consumer knowledge of newer technology. Based on an in-depth analysis of the telematics architecture and the technologies converging in the telematics system I suggest a mixed strategy with respect to standards. This strategy favors the growth of this industry. Based on this strategy there are developed some scenarios of how the telematics value network will look like and how the interaction among the players would take place. Finally, a conceptual system dynamic model is presented to illustrate the dynamics of the industry and how the factors influencing the adoption of the telematics all play together to favor or affect the diffusion of the growing telematics industry.by Rodrigo Luis.S.M.M.O.T
Collaborative Augmented Reality
Over the past number of years augmented reality (AR) has become an increasingly pervasive as a consumer level technology. The principal drivers of its recent development has been the evolution of mobile and handheld devices, in conjunction with algorithms and techniques from fields such as 3D computer vision. Various commercial platforms and SDKs are now available that allow developers to quickly develop mobile AR apps requiring minimal understanding of the underlying technology.
Much of the focus to date, both in the research and commercial environment, has been on single user AR applications. Just as collaborative mobile applications have a demonstrated role in the increasing popularity of mobile devices, and we believe collaborative AR systems present a compelling use-case for AR technology.
The aim of this thesis is the development a mobile collaborative augmented reality framework. We identify the elements required in the design and implementation stages of collaborative AR applications. Our solution enables developers to easily create multi-user mobile AR applications in which the users can cooperatively interact with the real environment in real time. It increases the sense of collaborative spatial interaction without requiring complex infrastructure. Assuming the given low level communication and AR libraries have modular structures, the proposed approach is also modular and flexible enough to adapt to their requirements without requiring any major changes
Space station System Engineering and Integration (SE and I). Volume 2: Study results
A summary of significant study results that are products of the Phase B conceptual design task are contained. Major elements are addressed. Study results applicable to each major element or area of design are summarized and included where appropriate. Areas addressed include: system engineering and integration; customer accommodations; test and program verification; product assurance; conceptual design; operations and planning; technical and management information system (TMIS); and advanced development
Integração da Cloud com rede na perspectiva de operador
Mestrado em Engenharia Electrónica e TelecomunicaçõesCloud Computing (CC) tem sido nos últimos tempos um tema bastante
mediático no mundo da tecnologia, sendo claras as suas potencialidades
tanto em termos económicos como em ciência de recursos. Apesar destas
valências, a adopção massiva deste paradigma está ainda condicionada por
aspectos relacionados com interoperabilidade, segurança e Quality of Service
(QoS). _E no sentido de colmatar estas condicionantes que surge o conceito
de Cloud Networking, que consiste na integração das características de CC
na rede.
Actualmente a infraestrutura de rede _e baseada em tecnologias que foram
desenhadas há muitos anos, numa altura em que o contexto e as necessidades
do mundo das comunicações eram completamente distintas das necessidades
actuais. Este fenómeno tem sido bastante abordado e referido
como a ossificação da rede. Esta infra-estrutura é, actualmente, incapaz
de dar resposta _as necessidades do CC, características como a dinâmica e
flexibilidade não se reflectem na rede. No entanto, a rede e CC não podem
ser dissociados, pois _e esta que estabelece uma ponte e permite o acesso a
estes recursos por parte dos utilizadores influenciando negativamente o seu
uso.
No futuro, a virtualização de redes directamente na infra-estrutura dos operadores
de rede irá permitir que os utilizadores interajam e utilizem recursos
de rede de uma forma similar ao que fazem com os recursos de CC. O
problema _e que esta tecnologia ainda está numa fase embrionária e ainda
demorara algum tempo até que se torne uma realidade. Se a longo prazo
a virtualização de rede deve ser vista como um objectivo a atingir, a curto
prazo deverá ser feito um esforço no sentido de trazer algumas das qualidades
referidas para as tecnologias de implementação de redes privadas já
difundidas entre os operadores de rede.
Actualmente as Virtual Private Networks (VPNs) são o mecanismo mais
utilizado pelos utilizadores para integrar os recursos de CC com a sua própria
infra-estrutura. No entanto, existem limitações porque esta integração _e
processada de uma forma estática em escalas de tempo muito superiores
aos de CC e na maioria das vezes obrigando os utilizadores a ter que interagir
com uma diversidade de operadores.
O objectivo principal desta Dissertação _e desenvolver um protótipo que
valide o conceito de Cloud Networking utilizando interfaces e protocolos
bem definidos, como _e o caso da Open Cloud Networking Interface (OCNI)
e Open Cloud Computing Interface (OCCI). Este protótipo ir_a ser capaz de
fornecer um serviço integrado de recursos de rede e CC em que o utilizador
só irá ter que interagir com um único fornecedor. Isto obriga a que uma
linha de comunicação seja estabelecida entre diferentes operadores para uma
rápida e automática integração dos dois domínios.
Nesta dissertação irão ser apresentados e estudados interfaces e protocolos
que facilitem a interoperabilidade entre operadores com vista a sua implementação num protótipo. No domínio da rede irão ser desenvolvidas
ferramentas que permitam o aprovisionamento de recursos com vista a integração de CC com a rede do operador. Irá também ser desenvolvido um
orquestrador que permita a um utilizador, através de um único pedido, criar
uma infra-estrutura que integre recursos de cloud e rede. Posteriormente
irão ser efetuados testes de desempenho da instanciação de um serviço integrado
de CC com a rede. Ainda no âmbito desta dissertação irá ser estudada
uma plataforma de virtualização de rede na qual irão ser feitos testes de
trafego sobre a mesma com vista _a sua integração no protótipo
Design of a Small Form-Factor Flight Control System
This work outlines a design for a small form-factor flight control system designed to fly in a wide variety of airframes. The system was designed with future expansion in mind while providing a complete, all-in-one solution to meet present needs. This system as presented meets most needs while remaining relatively low cost. It has a completely integrated IMU solution as well as on- board GPS. It is capable of basic waypoint navigation. This solution was testing using software and hardware-in-the-loop simulation which proved its functionality
Quality of service in optical burst switching networks
Tese dout., Engenharia Electrónica e Computação, Universidade do Algarve, 2009Fundação para e Ciência e a Tecnologi