397 research outputs found

    Navigation Assistance in Virtual Worlds

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    Analysis and implementation of the software for personal sports records

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    FyzickĂĄ aktivita plnĂ­ niekoÄŸko dĂŽleĆŸitĂœch benefitov pri udrĆŸiavanĂ­ dobrĂ©ho zdravia, prevencii voči chronickĂœch ochoreniam a mĂĄ pozitĂ­vny vplyv na duĆĄevnĂ© zdravie a celkovĂș kvalitu ĆŸivota. TĂĄto diplomovĂĄ prĂĄca sa zaoberĂĄ touto problematikou. CieÄŸom diplomovej prĂĄce je pochopiĆ„ koncept fyzickej aktivity ako takej, preskĂșmaĆ„ existujĂșce rieĆĄenia na trhu a vytvoriĆ„ ĆĄpecifikĂĄciu poĆŸiadaviek. SĂșčasĆ„ou je nĂĄvrh architektĂșry a implementĂĄcia webovej aplikĂĄcie s ohÄŸadom na pouĆŸiteÄŸnosĆ„. NavrhnutĂĄ aplikĂĄcia podporuje fyzickĂș aktivitu a je pripravenĂĄ pre jej ďalĆĄie rozĆĄĂ­renie.Physical activity has important benefits in maintaining good health, preventing chronic diseases and it has a positive impact on a mental health and an overall quality of the life. This diploma thesis deals with this issue. The objectives of the thesis are to understand a construct of the physical activity, to make a research of existing solutions on the market and to collect a requirement specification. Consequently, a design and implementation of the web application in a respect of the usability is provided. The proposed application encourages to perform a physical activity and it can potentially be further developed

    Self-Organised Schools

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    Self-Organised Schools: Educational Leadership and Innovative Learning Environments describes the results of the research we carried out at fourteen Italian schools that highlight how there is a positive correlation between the capabilities of school self-organization and the innovativeness of learning environments: in other words, the more self-organized schools are, the more innovative learning environments are. The results of this work are part of the strand of research of bottom-up emergency and self-organization, an extremely fruitful trend as shown by Sugata Mitra, the founder of the Self-Organized Learning Environments, according to whom, "education is a self-organized system where learning is an emerging phenomenon". This book gives new insights on self-organization studies, and most of all, to the idea that change - organizational and educational innovation - sparks from the bottom. This book is aimed specifically at school principals of all levels, scholastic reformers, educational scholars, organisation and management consultants who want to innovate learning and management of learning. These actors will benefit drawing useful examples from more than thirty different learning environments worldwide, fourteen examples of schools that self-organize, two frameworks - and two ready-to-use questionnaires - measuring the innovativeness of a learning environment, and the capability of a school to self-organize. Self-organization is the most fascinating future of innovative principal

    Enhancing interaction in mixed reality

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    With continuous technological innovation, we observe mixed reality emerging from research labs into the mainstream. The arrival of capable mixed reality devices transforms how we are entertained, consume information, and interact with computing systems, with the most recent being able to present synthesized stimuli to any of the human senses and substantially blur the boundaries between the real and virtual worlds. In order to build expressive and practical mixed reality experiences, designers, developers, and stakeholders need to understand and meet its upcoming challenges. This research contributes a novel taxonomy for categorizing mixed reality experiences and guidelines for designing mixed reality experiences. We present the results of seven studies examining the challenges and opportunities of mixed reality experiences, the impact of modalities and interaction techniques on the user experience, and how to enhance the experiences. We begin with a study determining user attitudes towards mixed reality in domestic and educational environments, followed by six research probes that each investigate an aspect of reality or virtuality. In the first, a levitating steerable projector enables us to investigate how the real world can be enhanced without instrumenting the user. We show that the presentation of in-situ instructions for navigational tasks leads to a significantly higher ability to observe and recall real-world landmarks. With the second probe, we enhance the perception of reality by superimposing information usually not visible to the human eye. In amplifying the human vision, we enable users to perceive thermal radiation visually. Further, we examine the effect of substituting physical components with non-functional tangible proxies or entirely virtual representations. With the third research probe, we explore how to enhance virtuality to enable a user to input text on a physical keyboard while being immersed in the virtual world. Our prototype tracked the user’s hands and keyboard to enable generic text input. Our analysis of text entry performance showed the importance and effect of different hand representations. We then investigate how to touch virtuality by simulating generic haptic feedback for virtual reality and show how tactile feedback through quadcopters can significantly increase the sense of presence. Our final research probe investigates the usability and input space of smartphones within mixed reality environments, pairing the user’s smartphone as an input device with a secondary physical screen. Based on our learnings from these individual research probes, we developed a novel taxonomy for categorizing mixed reality experiences and guidelines for designing mixed reality experiences. The taxonomy is based on the human sensory system and human capabilities of articulation. We showcased its versatility and set our research probes into perspective by organizing them inside the taxonomic space. The design guidelines are divided into user-centered and technology-centered. It is our hope that these will contribute to the bright future of mixed reality systems while emphasizing the new underlining interaction paradigm.Mixed Reality (vermischte RealitĂ€ten) gehen aufgrund kontinuierlicher technologischer Innovationen langsam von der reinen Forschung in den Massenmarkt ĂŒber. Mit der EinfĂŒhrung von leistungsfĂ€higen Mixed-Reality-GerĂ€ten verĂ€ndert sich die Art und Weise, wie wir Unterhaltungsmedien und Informationen konsumieren und wie wir mit Computersystemen interagieren. Verschiedene existierende GerĂ€te sind in der Lage, jeden der menschlichen Sinne mit synthetischen Reizen zu stimulieren. Hierdurch verschwimmt zunehmend die Grenze zwischen der realen und der virtuellen Welt. Um eindrucksstarke und praktische Mixed-Reality-Erfahrungen zu kreieren, mĂŒssen Designer und Entwicklerinnen die kĂŒnftigen Herausforderungen und neuen Möglichkeiten verstehen. In dieser Dissertation prĂ€sentieren wir eine neue Taxonomie zur Kategorisierung von Mixed-Reality-Erfahrungen sowie Richtlinien fĂŒr die Gestaltung von solchen. Wir stellen die Ergebnisse von sieben Studien vor, in denen die Herausforderungen und Chancen von Mixed-Reality-Erfahrungen, die Auswirkungen von ModalitĂ€ten und Interaktionstechniken auf die Benutzererfahrung und die Möglichkeiten zur Verbesserung dieser Erfahrungen untersucht werden. Wir beginnen mit einer Studie, in der die Haltung der nutzenden Person gegenĂŒber Mixed Reality in hĂ€uslichen und Bildungsumgebungen analysiert wird. In sechs weiteren Fallstudien wird jeweils ein Aspekt der RealitĂ€t oder VirtualitĂ€t untersucht. In der ersten Fallstudie wird mithilfe eines schwebenden und steuerbaren Projektors untersucht, wie die Wahrnehmung der realen Welt erweitert werden kann, ohne dabei die Person mit Technologie auszustatten. Wir zeigen, dass die Darstellung von in-situ-Anweisungen fĂŒr Navigationsaufgaben zu einer deutlich höheren FĂ€higkeit fĂŒhrt, SehenswĂŒrdigkeiten der realen Welt zu beobachten und wiederzufinden. In der zweiten Fallstudie erweitern wir die Wahrnehmung der RealitĂ€t durch Überlagerung von Echtzeitinformationen, die fĂŒr das menschliche Auge normalerweise unsichtbar sind. Durch die Erweiterung des menschlichen Sehvermögens ermöglichen wir den Anwender:innen, WĂ€rmestrahlung visuell wahrzunehmen. DarĂŒber hinaus untersuchen wir, wie sich das Ersetzen von physischen Komponenten durch nicht funktionale, aber greifbare Replikate oder durch die vollstĂ€ndig virtuelle Darstellung auswirkt. In der dritten Fallstudie untersuchen wir, wie virtuelle RealitĂ€ten verbessert werden können, damit eine Person, die in der virtuellen Welt verweilt, Text auf einer physischen Tastatur eingeben kann. Unser Versuchsdemonstrator detektiert die HĂ€nde und die Tastatur, zeigt diese in der vermischen RealitĂ€t an und ermöglicht somit die verbesserte Texteingaben. Unsere Analyse der TexteingabequalitĂ€t zeigte die Wichtigkeit und Wirkung verschiedener Handdarstellungen. Anschließend untersuchen wir, wie man VirtualitĂ€t berĂŒhren kann, indem wir generisches haptisches Feedback fĂŒr virtuelle RealitĂ€ten simulieren. Wir zeigen, wie Quadrokopter taktiles Feedback ermöglichen und dadurch das PrĂ€senzgefĂŒhl deutlich steigern können. Unsere letzte Fallstudie untersucht die Benutzerfreundlichkeit und den Eingaberaum von Smartphones in Mixed-Reality-Umgebungen. Hierbei wird das Smartphone der Person als EingabegerĂ€t mit einem sekundĂ€ren physischen Bildschirm verbunden, um die Ein- und AusgabemodalitĂ€ten zu erweitern. Basierend auf unseren Erkenntnissen aus den einzelnen Fallstudien haben wir eine neuartige Taxonomie zur Kategorisierung von Mixed-Reality-Erfahrungen sowie Richtlinien fĂŒr die Gestaltung von solchen entwickelt. Die Taxonomie basiert auf dem menschlichen Sinnessystem und den ArtikulationsfĂ€higkeiten. Wir stellen die vielseitige Verwendbarkeit vor und setzen unsere Fallstudien in Kontext, indem wir sie innerhalb des taxonomischen Raums einordnen. Die Gestaltungsrichtlinien sind in nutzerzentrierte und technologiezentrierte Richtlinien unterteilt. Es ist unsere Anliegen, dass diese Gestaltungsrichtlinien zu einer erfolgreichen Zukunft von Mixed-Reality-Systemen beitragen und gleichzeitig die neuen Interaktionsparadigmen hervorheben

    Collaborative geographic visualization

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    Dissertação apresentada na Faculdade de CiĂȘncias e Tecnologia da Universidade Nova de Lisboa para a obtenção do grau de Mestre em Engenharia do Ambiente, perfil GestĂŁo e Sistemas AmbientaisThe present document is a revision of essential references to take into account when developing ubiquitous Geographical Information Systems (GIS) with collaborative visualization purposes. Its chapters focus, respectively, on general principles of GIS, its multimedia components and ubiquitous practices; geo-referenced information visualization and its graphical components of virtual and augmented reality; collaborative environments, its technological requirements, architectural specificities, and models for collective information management; and some final considerations about the future and challenges of collaborative visualization of GIS in ubiquitous environment

    "The Hangout was Serious Business:" Exploring Literacies and Learning in an Online Sims Fan Fiction Community

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    abstract: The purpose of this study is to explore the literacy practices members of an online fan community engage in to participate in the space and to question what learning happens through that participation. This dissertation is the product of a two-year virtual ethnographic study of The Sims Writers' Hangout (SWH), a discussion forum website established by fans of The Sims to support members' interests in creating and sharing Sims fan fiction. Affinity space theory informs an understanding of SWH's organization, and a definition of literacies as situated, social practices also frames the study. Data were collected following a discourse-centered online ethnographic approach, which guided systematic observation and interactions with eight key informants. The data corpus includes hundreds of pages of discussion forum posts, member profiles, moderator-created norming texts, numerous digital, multimodal Sims fan fiction texts, virtual interview responses from informants, field notes, and additional virtual artifacts, such as informants' websites and Flickr® photostreams. Study results are presented within three separate manuscripts prepared for publication and presentation, each exploring different lines of inquiry related to SWH. Chapter 3 focuses on tensions visible in the forum discussions to argue for an expansion of affinity space theory that accounts for the “hanging out” members do in the space. Chapter 4 analyzes one informant's literacy practices using a Design perspective. This analysis reveals the collaborative nature of Sims fan fiction literacies. The final manuscript (Chapter 5) offers an analysis of SWH pedagogy using Bernstein's pedagogic device concept. Data illustrate how pedagogic discourse in this online, informal learning space aligns with and challenges Bernstein's theory. Finally, Chapter 6 offers conclusions about how these three analyses expand our understanding of adolescent literacies and 21st century learning. This chapter also contains implications for theory and practice, recommendations for future research, and reflections on lessons learned.Dissertation/ThesisPh.D. Curriculum and Instruction 201
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