Made available in DSpace on 2014-06-11T19:24:05Z (GMT). No. of bitstreams: 0 Previous issue date: 2011-06-28Bitstream added on 2014-06-13T19:10:11Z : No. of bitstreams: 1 souza_tmmm_me_bauru.pdf: 2472680 bytes, checksum: 7a00c84a14d8f434f6a85a3068956d65 (MD5) / Universidade Estadual Paulista (UNESP) / A televisão digital no Brasil objetiva promover interação entre as diversas áreas, tais como: gestão da informação, tecnologia, educação, comunicação, engenharia e, destancando-se a hospitalidade, para que, juntas, possam buscar resultados, contemplando os seres humanos, matéria prima desses diversificados saberes. Neste contexto, o presente estudo analisa a portabilidade e a mobilidade da televisão digital como possibilidades de promoção para o hospitabilidade social. São recentes as pesquisas sobre televisão digital e hospitabilidade no Brasil. As tecnologias digitais apresentam novos ingredientes aos conceitos da hospitabilidade, convergindo para a possibilidade do resgate do ser social, integrando e reforçando seus vínculos sociais no espaço tecnológico. A metodologia escolhida para este estudo consiste nas pesquisas exploratória, bibliográfica e qualitativa. Assim, com a televisão digital, é possível que tenhamos novas formas de sociabilidade, pois pode ser levada e assistida em e para qualquer lugar, em decorrência dos seus recursos de portabilidade e mobilidade, os quais permitem a construção de laços sociais ou em um conceito mais amplo, a hospitabilidade social nos espaços públicos. A implantação da televisão digital, além do progresso tecnológico, também permite uma sociedade mais comunicativa, com o receptor da mensagem mais ativo, participativo e interativo inclusive na construção de laços de hospitabilidade. Por estas considerações, acredita-se que a televisão digital e as ferramentas de portabilidade e mobilidade contribuem para tornarem os espaços públicos lugares de reconhecimento, de possibilidades de encontro, de proximidade com o outro, de hospitabilidade social / Digital television in Brazil aims to promote interaction between many areas such as information management, technology, education, communications, engineering, and the hospitality, so that together they can get results, considering the human, material os these diverse knowledge. In this context, this study examines the portability and mobility of digital television as opportunities to promote social hospitality. The research on digital television and hospitality in Brazil are recent. Digital tecnhnologies ofter new ingredientes to the concepts of hospitality, converging to the possibility of redemption of the social being, integrating and strengthening their social ties in the technological space. The methodology chosen for this study consists of research, exploratory and qualitative literature. So, with digital television, we way have new forms of sociability, it can be taken and seen anywhere and, due to their portability and mobility capabilities, which allow the construction of social ties or a concept broader social hospitality in public spaces. The deployment of digital television in addition to technological progress, it also allows a more communicative society, with the receiver of the message more active, participatory and interactive including the construction of bonds of hospitality. For these considerations, it is believed that digital television and tools for portability and mobility contribute to public spaces become places of recognition, opportunities for encounters and proximity to the other the social hospitality

[pt] Com mais de 150 milhões de celulares em operação e uma penetração de aproximadamente 80 linhas móveis para cada 100 habitantes, o mercado brasileiro de telefonia móvel está entrando na maturidade, onde a média é de 100 aparelhos para cada 100 habitantes. Seguindo a tendência destes mercados, o processo de implantação da portabilidade numérica foi concluído em Março de 2009 e tem como metas principais reduzir barreiras de mudança, aumentar a competição no setor e estimular migrações entre operadoras. O objetivo desse trabalho é identificar os fatores que influenciam a formação da intenção de troca dos consumidores e, a partir de um modelo, comparar o mercado brasileiro ao alemão, considerado maduro. Para o estudo, uma amostra de 202 usuários foi coletada no mercado brasileiro e 200 no mercado alemão. Utilizando modelagem por equações estruturais, foi possível identificar que, em ambos os mercados a satisfação do consumidor é um antecedente com forte influência sobre o processo de formação de intenção de troca. Além disso, os resultados sugerem existir maior peso da percepção da qualidade do serviço na formação da satisfação no mercado brasileiro. Já no mercado alemão, a maior influência parece vir da percepção do valor pago pelo serviço. Os resultados dos testes de hipótese apontam maior percepção de qualidade e valor dos serviços pelos consumidores alemães, enquanto que no Brasil, os usuários ainda percebem maiores barreiras de mudança. O estudo pretende contribuir para o entendimento das relações existentes entre os construtos estudados e oferecer sugestões que possam auxiliar no desenvolvimento de estratégias pelos participantes do mercado. / [en] With more than 150 million mobile phones under operation and a penetration rate close to 80 lines per 100 inhabitants, the Brazilian mobile market is entering in the maturity, where the average rate is equal to 100 lines per 100 inhabitants. Following the trend of these markets, the introduction of the mobile number portability has been concluded in March 2009 and has as main objectives to reduce the switching barriers, increase the level of competition and encourage the switching process among the operators. The purpose of this study is to identify the elements which influence the switching intention and, based on a model, compare the Brazilian mobile market to the German one, considered already mature. For the study, a sample of 202 users was collected in the Brazilian market and 200 in the German one. Applying the Structural Equation Model (SEM), it was possible to identify, in both markets, that the customer satisfaction is a strong antecedent, with great influence in the switching intention. Moreover, the data analysis indicates that in the Brazilian market the service quality has a higher influence than in the German one. For the German users, the perceived price appear to be more important. The results from the hypotheses tests indicate that the perception of the service quality and the perceived price is higher in the German market, while the Brazilian customers still feel high switching barriers. The findings intent to contribute for the academic knowledge due to the investigation of the relationships among the constructs analyzed, and to suggest insights that can help the market players in the development of market strategies.

GPU-based heterogeneous architectures have been given much attention recently. How to get optimal performance out of those architectures with affordable programming effort remains a complex challenge. The PEPPHER framework is one possible solution. Within the PEPPHER framework, the StarPU run-time system is used to decrease such programming efforts, and at the same time to ensure near optimal performance by efficient scheduling over such architectures. However, adapting a normal C/C++ application to the StarPU runtime system requires additional programming effort. This thesis implements and tests a composition tool for automatic adaptation of normal C/C++ applications withPEPPHER components to StarPU. This composition tool requires XML annotation for applications and several trivial changes to applications, which take limited efforts. Our results obtained by three test cases (vector scale, sorting, andmatrix multiplication) show that automatic adaptation works well on different platforms that StarPU supports. It is also shown that besides StarPU’s dynamic composition, this tool facilitates static composition to improve performance portability of normal C/C++ applications.

Ethernet functionality testing as a generic term used for checking connectivity,throughput and capability to transfer packets over the network. Especially in the packet-switchenvironment, Ethernet testing has become an essential part for deploying a reliable network.Over a long distance Ethernet testing parameter for analyzing network performance must havetwo devices attached and synchronized. Saab Microwave Systems is among the leading suppliers of radar systems developing groundbased,naval and air-borne radar systems. To ensure the correct functionality, the developerwants to verify the performance of computer network and looking for a suitable solution. A software application is required to verify and test the functionality of the Ethernet network andto verify the functionality and performance of the TCP/IP stack of newly added node. Theprograms shall be easily ported to different operating systems and must not depend on specificproduct properties.A software application, “NetBurst”, is developed for Ethernet functionality testing. Theapplication is vendor and platform independent.

[pt] Nos últimos anos, os usuários da Web (World Wide Web) apresentam uma mudança significativa em seu comportamento, tornando-se, além de consumidores, produtores de conteúdo multimídia. Por outro lado, a produção de conteúdo para a TV Digital brasileira, sobre tudo as aplicações interativas escritas na linguagem declarativa NCL (Nested Context Language), ainda é feita por profissionais alocados em emissoras de TV e em produtoras de conteúdo. Considerando o novo perfil dos usuários da grande rede e o fato de que a NCL é uma linguagem hipermídia cujo emprego não se restringe apenas a aplicações da TV Digital, surge a oportunidade de popularizar o uso da NCL como uma nova forma de especificar conteúdo multimídia também para Web. Mais além, uma vez que a NCL é recomendada pelo ITU-T como referencia para serviços IPTV, pode-se vislumbrar uma nova plataforma para o oferecimento de tais serviços na Web. Motivado por esse novo cenário, este trabalho propõe a adaptação do middleware declarativo Ginga-NCL, que é a camada de software responsável pela execução das aplicações NCL, ao ambiente da Web. A adaptação proposta busca oferecer o controle de apresentação do conteúdo, o suporte a edição em tempo de exibição e a sincronização entre os objetos de mídia contidos em ambos os domínios (Web e TV Interativa). Em suma, o trabalho discute como uma página Web pode se beneficiar da API interna de exibidores e dos demais recursos oferecidos pelo middleware Ginga. Adicionalmente também é proposto o suporte a uma nova plataforma pelo middleware a fim de facilitar o processo de adaptação. / [en] Over the past few years the Web (World Wide Web) users have been presenting a significant change on their behavior, becoming, beside consumers, multimedia content producers. On the other hand, the Brazilian Digital TV content production, more especially the interactive applications written in NCL (Nested Context Language) are still made by professionals allocated in TV broadcasters and content producers companies. Considering the new Web users profile and the fact that NCL is a hypermedia programming language whose scope is not restricted to Digital TV application the opportunity to popularize the use of NCL arises as a new way to specify multimedia content also in the Web. Moreover, once NCL is recommend by ITU-T as reference to IPTV service, is reasonable to realize a new platform to deploy such services on the Web. Motivated by this new scenario this work proposes the adaptation of Ginga-NCL declarative middleware, which is the software layer in charge to execute of the NCL application, to the Web environment. The proposed adaptation aim to offer the content presentation control, live editing support and synchronization among media objects from both domains (Web and Interactive TV). In short, the presented work discusses how a Web page can be benefit by the internal player API and other features offered by the middleware Ginga. In addition is also proposed a new platform support for the middleware in order to facilitate adaptation process.

As organizações precisam trocar informações de forma simples e eficiente, com custos tão baixos quanto possível. Essas informações às vezes são apresentadas na forma de documentos com formato e conteúdos pré-definidos. Esses documentos podem ser equivalentes ou quase equivalentes, porém bastantes distintos em diferentes organizações. Numa mesma organização, os documentos podem ser diferentes em contextos históricos. O propósito deste trabalho é facilitar a distribuição dos documentos, superando o problema dos formatos com os quais foram criados. O objetivo é possibilitar a interoperabilidade de documentos e atingir a portabilidade simples e confiável de documentos através da reutilização de formatos e conteúdos, em diferentes combinações plausíveis. Propomos, usar ontologias como solução ao problema da falta de interoperabilidade nas implementações de formatos de documentos. Como prova de conceito consideramos a portabilidade entre os formatos padrão ODF(Open Document Format) e (Office Open XML). / Organizations need to exchange information simple and efficient, with costs as low as possible. Such information is sometimes presented as documents and with pre-defined content. These documents may be equivalent or nearly equivalent, but quite distinct in different organizations. In the same organization, documents can be different historical contexts. The purpose of this work is to enable interoperability of documents and achieve portability of digital documents through the reuse of content and format in different plausible combinations. We propose the characterization of digital documents using ontologies as a solution to the problem of lack of interoperability in the implementations of document formats. As proof of concept we consider the portability between ODF(Open Document Format) and OOXML (Office Open XML) document formats.

Ce travail porte sur l'interaction avec des objets virtuels 3D, et plus particulièrement leur manipulation : sélection, translation et rotation. Les plates-formes les plus utilisées aujourd'hui pour ce type de tâche (ordinateur personnel et appareil mobile) ont été conçues avant tout pour l'interaction 2D, et sont donc peu adaptées à la manipulation 3D. Il existe pourtant une alternative plus efficace : les systèmes de réalité virtuelle. Cependant, les systèmes actuellement disponibles restent trop souvent encombrants, onéreux et/ou intrusifs pour l'utilisateur, et demeurent sous-utilisés pour cette raison. Dans cette thèse, nous étudions de nouvelles approches pour rendre ce type d'interaction moins contraignant, tout en conservant une bonne efficacité de manipulation. Les principaux axes explorés sont la portabilité de l'interface, sa non-intrusivité, et l'utilisation de dispositifs plus largement accessibles au grand public. Nous proposons une première approche visant à répondre simultanément aux critères ci-dessus. Celle-ci consiste à combiner un appareil mobile classique (pour sa portabilité et son accessibilité) avec des objets tangibles passifs (pour une manipulation 3D efficace et non-intrusive). Cette approche présente toutefois encore certaines contraintes : elle est constituée de multiples éléments qui doivent être transportés ensemble, et elle ne se prête pas à l'utilisation de dispositifs à retour de force. Nous introduisons donc dans un deuxième temps une nouvelle technique, appelée «découplage». Basée sur le principe du «pseudo-haptique», celle-ci permet à l'utilisateur de percevoir des forces virtuelles à travers la seule modalité visuelle. Il devient alors possible de se passer complètement de dispositifs haptiques, et des contraintes qui leur sont associées. Nous nous intéressons ensuite à une approche entièrement intégrée, visant à améliorer la portabilité par-rapport à une interface faite d'éléments séparés. Cette approche consiste à se servir des déplacements de l'appareil mobile lui-même dans l'espace réel pour manipuler des objets 3D affichés sur son propre écran. Cette configuration «localement couplée» présente cependant plusieurs particularités qui rendent la manipulation plus complexe. Nous examinons donc en détail les différentes questions que pose cette configuration spécifique. Nous proposons enfin une dernière approche, appelée le «volume tangible», visant à retrouver la simplicité de la manipulation par objets tangibles mais dans un unique dispositif intégré. Nous décrivons une première implémentation de ce dispositif, et discutons de sa faisabilité technique ainsi que de l'accessibilité de cette approche à court et moyen terme. / This work focuses on 3D interaction with virtual objects, more specifically on 3D manipulation: selection, translation, and rotation. The most commonly-used interaction platforms (personal computer, mobile device) were designed for 2D interaction and thus are not well suited to 3D manipulation. There is a more efficient alternative for this task: virtual reality. However, current virtual reality systems are too often bulky, expensive and/or intrusive to the user, and for these reasons remain underused. In this thesis, we propose and study new solutions to make this form of interaction more convenient without reducing its effectiveness. The main objectives we aim for are interface portability, non-intrusiveness, and the use of readily-available hardware. We propose a first approach to simultaneously meet the above criteria. It consists in combining a standard mobile device (for its portability and widespread availability) with passive tangible objects (for efficient 3D manipulation in a non-intrusive manner). Yet, this approach still has drawbacks: it is made of multiple parts that must always be carried together, and is not suitable for adding force-feedback using haptic devices. We thus introduce a new technique, called “decoupling”, that allows the user to perceive virtual forces through the visual modality alone. Based on the concept of “pseudo-haptics”, this technique makes it possible to provide force feedback without the constraints associated with actual haptic devices. We then study a different approach intended to be fully integrated, enhancing the portability aspect compared to an interface made of multiple parts. This approach consists in using the motion of the mobile device itself to manipulate 3D objects displayed on its own screen. However, this “locally-coupled” configuration presents several unique characteristics that make manipulation more complex. We thus investigate the questions raised by this specific configuration. Finally, we introduce a last approach, called the “tangible volume”, aimed at regaining the same directness of manipulation as with tangible objects but in a single integrated device. We describe an early implementation of such a device, and discuss its technical feasibility as well as its potential accessibility to end users in the short and medium term.

Background. At the year of 2021, 770 million people worldwide were living without access to electricity. In parallel with this, electrification of vehicles and other equipment constantly increases which results in a demand for access to reliable off-grid energy to allow for operation in remote locations or places without sufficient energy infrastructure due to external factors such as natural disasters. As the use of fossil fuels is predicted to decrease, the need for sustainable energy production utilizing renewable energy sources has proved to be critical. The combination of these factors results in a need for the development of sustainable off-grid energy systems utilizing renewable energy sources.  Objectives. The objective of this thesis is to highlight needs and present a developed solution to portable off-grid energy production and distribution utilizing renewable energy sources. The goal is to highlight problems within the area of focus and present a potential solution to one, or multiple, of these problems. The presented solution shall be based on a solid engineering foundation and meet the technical requirements developed from needs that arise during the project. Methods. The work presented in this thesis was conducted with the use of DRM, Design Research Methodology, as the choice of research methodology while Design thinking was the choice of design approach. The use of DRM allowed for a structured and efficient research process that allowed for the possibility to validate result. The use of Design thinking as design approach provided methods and tools to support innovation while working with problems that were initially unknown or vaguely defined. Results. The result of the work presented in this thesis provides information regarding multiple problems and critical aspects within the area of focus. A list of requirements for a sustainable energy system to satisfy in order to enter the market is presented, where portability, reliability and redundancy are marked as key requirements. A proposed solution in the form of a portable modular sustainable energy production trailer utilizing different renewable energy sources was developed to allow for off-grid electricity generation. This combined with an energy distribution solution in the form of a energy storage module mounted on the Volvo TA15 system allows for autonomous energy transportation to the location of the energy need.  Conclusions. As the need for sustainable energy constantly increases, development of sustainable energy production and distribution systems that can operate off-grid has proven to be critical. The utilization of renewable energy sources has also been identified as a critical factor in parallel with the phasing out of fossil fuels. The proposed solution has provided evidence of the potential for a portable off-grid hybrid energy system and its potential impact on the global 2030-agenda goals for sustainability.

In this thesis, we address issues associated with programming modern heterogeneous systems while focusing on a special kind of heterogeneous systems that include multicore CPUs and one or more GPUs, called GPU-based systems.We consider the skeleton programming approach to achieve high level abstraction for efficient and portable programming of these GPU-based systemsand present our work on SkePU library which is a skeleton library for these systems. We extend the existing SkePU library with a two-dimensional (2D) data type and skeleton operations and implement several new applications using newly made skeletons. Furthermore, we consider the algorithmic choice present in SkePU and implement support to specify and automatically optimize the algorithmic choice for a skeleton call, on a given platform. To show how to achieve performance, we provide a case-study on optimized GPU-based skeleton implementation for 2D stencil computations and introduce two metrics to maximize resource utilization on a GPU. By devising a mechanism to automatically calculate these two metrics, performance can be retained while porting an application from one GPU architecture to another. Another contribution of this thesis is implementation of the runtime support for the SkePU skeleton library. This is achieved with the help of the StarPUruntime system. By this implementation,support for dynamic scheduling and load balancing for the SkePU skeleton programs is achieved. Furthermore, a capability to do hybrid executionby parallel execution on all available CPUs and GPUs in a system, even for a single skeleton invocation, is developed. SkePU initially supported only data-parallel skeletons. The first task-parallel skeleton (farm) in SkePU is implemented with support for performance-aware scheduling and hierarchical parallel execution by enabling all data parallel skeletons to be usable as tasks inside the farm construct. Experimental evaluations are carried out and presented for algorithmic selection, performance portability, dynamic scheduling and hybrid execution aspects of our work.

No description available.