155 research outputs found

    Social Networking Tools for the DCC

    Get PDF

    The design and evaluation of non-visual information systems for blind users

    Get PDF
    This research was motivated by the sudden increase of hypermedia information (such as that found on CD-ROMs and on the World Wide Web), which was not initially accessible to blind people, although offered significant advantages over traditional braille and audiotape information. Existing non-visual information systems for blind people had very different designs and functionality, but none of them provided what was required according to user requirements studies: an easy-to-use non-visual interface to hypermedia material with a range of input devices for blind students. Furthermore, there was no single suitable design and evaluation methodology which could be used for the development of non-visual information systems. The aims of this research were therefore: (1) to develop a generic, iterative design and evaluation methodology consisting of a number of techniques suitable for formative evaluation of non-visual interfaces; (2) to explore non-visual interaction possibilities for a multimodal hypermedia browser for blind students based on user requirements; and (3) to apply the evaluation methodology to non-visual information systems at different stages of their development. The methodology developed and recommended consists of a range of complementary design and evaluation techniques, and successfully allowed the systematic development of prototype non-visual interfaces for blind users by identifying usability problems and developing solutions. Three prototype interfaces are described: the design and evaluation of two versions of a hypermedia browser; and an evaluation of a digital talking book. Recommendations made from the evaluations for an effective non-visual interface include the provision of a consistent multimodal interface, non-speech sounds for information and feedback, a range of simple and consistent commands for reading, navigation, orientation and output control, and support features. This research will inform developers of similar systems for blind users, and in addition, the methodology and design ideas are considered sufficiently generic, but also sufficiently detailed, that the findings could be applied successfully to the development of non-visual interfaces of any type

    Contextual memory in group workspaces

    Get PDF
    Thesis (S.M.)--Massachusetts Institute of Technology, School of Architecture and Planning, Program in Media Arts and Sciences, 2009.Cataloged from PDF version of thesis.Includes bibliographical references (p. 125-129).This thesis presents the design and implementation of MemTable, an interactive touch table that supports co-located group meetings by capturing both digital and physical interactions in its memory. The goal of the project is to demonstrate hardware and software design principles that integrate recording, recalling, and reflection during the life cycle of a project in one tabletop system. MemTable's hardware design prioritizes ergonomics, social interaction, structural integrity, and streamlined implementation. Its software supports heterogeneous input modalities for a variety of contexts: brainstorming, decision making, event planning, and story-boarding. The user interface introduces personal menus, capture elements, and tagging to help identify the context of meeting interactions. It records the history of the implicit and explicit events during meetings. A preliminary evaluation is presented of user feedback on the capture and recall features. A longitudinal design plan outlines a framework for future work that integrates review and reflection functions into a comprehensive system. Additional features are presented for browsing and searching prior meeting data, visualizing long term work patterns, and integrating meeting data with external web services.by Seth E. Hunter.S.M

    The Use of Multiple Slate Devices to Support Active Reading Activities

    Get PDF
    Reading activities in the classroom and workplace occur predominantly on paper. Since existing electronic devices do not support these reading activities as well as paper, users have difficulty taking full advantage of the affordances of electronic documents. This dissertation makes three main contributions toward supporting active reading electronically. The first contribution is a comprehensive set of active reading requirements, drawn from three decades of research into reading processes. These requirements explain why existing devices are inadequate for supporting active reading activities. The second contribution is a multi-slate reading system that more completely supports the active reading requirements above. Researchers believe the suitability of paper for active reading is largely due to the fact it distributes content across different sheets of paper, which are capable of displaying information as well as capturing input. The multi-slate approach draws inspiration from the independent reading and writing surfaces that paper provides, to blend the beneficial features of e-book readers, tablets, PCs, and tabletop computers. The development of the multi-slate system began with the Dual-Display E-book, which used two screens to provide richer navigation capabilities than a single-screen device. Following the success of the Dual-Display E-book, the United Slates, a general-purpose reading system consisting of an extensible number of slates, was created. The United Slates consisted of custom slate hardware, specialized interactions that enabled the slates to be used cooperatively, and a cloud-based infrastructure that robustly integrated the slates with users' existing computing devices and workflow. The third contribution is a series of evaluations that characterized reading with multiple slates. A laboratory study with 12 participants compared the relative merits of paper and electronic reading surfaces. One month long in-situ deployments of the United Slates with graduate students in the humanities found the multi-slate configuration to be highly effective for reading. The United Slates system delivered desirable paper-like qualities that included enhanced reading engagement, ease of navigation, and peace-of-mind while also providing superior electronic functionality. The positive feedback suggests that the multi-slate configuration is a desirable method for supporting active reading activities

    Information Outlook, January 1997

    Get PDF
    Volume 1, Issue 1https://scholarworks.sjsu.edu/sla_io_1997/1000/thumbnail.jp

    Human-Computer Interaction

    Get PDF
    In this book the reader will find a collection of 31 papers presenting different facets of Human Computer Interaction, the result of research projects and experiments as well as new approaches to design user interfaces. The book is organized according to the following main topics in a sequential order: new interaction paradigms, multimodality, usability studies on several interaction mechanisms, human factors, universal design and development methodologies and tools

    Hypertext Semiotics in the Commercialized Internet

    Get PDF
    Die Hypertext Theorie verwendet die selbe Terminologie, welche seit Jahrzehnten in der semiotischen Forschung untersucht wird, wie z.B. Zeichen, Text, Kommunikation, Code, Metapher, Paradigma, Syntax, usw. Aufbauend auf jenen Ergebnissen, welche in der Anwendung semiotischer Prinzipien und Methoden auf die Informatik erfolgreich waren, wie etwa Computer Semiotics, Computational Semiotics und Semiotic Interface Engineering, legt diese Dissertation einen systematischen Ansatz fĂŒr all jene Forscher dar, die bereit sind, Hypertext aus einer semiotischen Perspektive zu betrachten. Durch die VerknĂŒpfung existierender Hypertext-Modelle mit den Resultaten aus der Semiotik auf allen Sinnesebenen der textuellen, auditiven, visuellen, taktilen und geruchlichen Wahrnehmung skizziert der Autor Prolegomena einer Hypertext-Semiotik-Theorie, anstatt ein völlig neues Hypertext-Modell zu prĂ€sentieren. Eine EinfĂŒhrung in die Geschichte der Hypertexte, von ihrer Vorgeschichte bis zum heutigen Entwicklungsstand und den gegenwĂ€rtigen Entwicklungen im kommerzialisierten World Wide Web bilden den Rahmen fĂŒr diesen Ansatz, welcher als Fundierung des BrĂŒckenschlages zwischen Mediensemiotik und Computer-Semiotik angesehen werden darf. WĂ€hrend Computer-Semiotiker wissen, dass der Computer eine semiotische Maschine ist und Experten der kĂŒnstlichen Intelligenz-Forschung die Rolle der Semiotik in der Entwicklung der nĂ€chsten Hypertext-Generation betonen, bedient sich diese Arbeit einer breiteren methodologischen Basis. Dementsprechend reichen die Teilgebiete von Hypertextanwendungen, -paradigmen, und -strukturen, ĂŒber Navigation, Web Design und Web Augmentation zu einem interdisziplinĂ€ren Spektrum detaillierter Analysen, z.B. des Zeigeinstrumentes der Web Browser, des Klammeraffen-Zeichens und der sogenannten Emoticons. Die Bezeichnung ''Icon'' wird als unpassender Name fĂŒr jene Bildchen, welche von der graphischen BenutzeroberflĂ€che her bekannt sind und in Hypertexten eingesetzt werden, zurĂŒckgewiesen und diese Bildchen durch eine neue Generation mĂ€chtiger Graphic Link Markers ersetzt. Diese Ergebnisse werden im Kontext der Kommerzialisierung des Internet betrachtet. Neben der Identifizierung der Hauptprobleme des eCommerce aus der Perspektive der Hypertext Semiotik, widmet sich der Autor den InformationsgĂŒtern und den derzeitigen Hindernissen fĂŒr die New Economy, wie etwa der restriktiven Gesetzeslage in Sachen Copyright und Intellectual Property. Diese anachronistischen BeschrĂ€nkungen basieren auf der problematischen Annahme, dass auch der Informationswert durch die Knappheit bestimmt wird. Eine semiotische Analyse der iMarketing Techniken, wie z.B. Banner Werbung, Keywords und Link Injektion, sowie Exkurse ĂŒber den Browser Krieg und den Toywar runden die Dissertation ab

    Supporting students' construction of hypermedia

    Get PDF
    This thesis considers the proposition that hypermedia may be employed effectively in higher education. More specifically, the question of its use by undergraduate music students to assist in writing essays and dissertations is investigated. The work begins with a review of general issues relating to educational hypermedia, such as its history, application, design and architecture. A user-centred approach to hypermedia development is advocated, and after critique and analysis of the literature, a framework for human-computer interaction for educational hypermedia is proposed. A case study is reported which serves to facilitate the undertaking of original research, as well as to evaluate the proposed framework. Other environments are also selected to carry out more generic research. Both reading strategies and writing strategies are investigated, and the results from these studies are used to conduct a repertory grid analysis of students' approaches to and perceptions of essay and dissertation development. The outcome of this experiment concludes with a proposal for a structural model of essay and dissertation development. Analysis of the model suggests the need for further survey analysis of taskartefact usage in specific educational domains, and experimental studies into electronic document manipulation and the reading of music from computer screens are investigated with respect to the case study environment. The implications of the research carried out in this thesis have assisted in and helped to justify the design of the prototype system HECTOR (Hypermedia, from Essay Conception TO Realisation). It aims to support students in their research, planning and writing of essays and dissertations. HECTOR has been evaluated in the field, and the results of this go some way to supporting the hypothesis of the thesis - that hypermedia can be employed effectively in higher education

    Collaborative and Social Interaction within Groups of Patrons in Academic and Public Libraries: Implications for Digital Libraries

    Get PDF
    This Master’s thesis investigates patrons’ information-seeking behaviour in physical libraries. Information available to meet patron’s information needs, and constraints that limit the use of this information have been examined by a number of researchers in the last few years. However, there is a dearth of literature on the information-seeking processes, including the act of selecting books from shelves, and the kind of social interaction that may occur between patrons attending the library in groups. To address this gap we identified in the literature, this thesis used a qualitative method to investigate the behaviour of patrons when visiting libraries, and the way patrons within groups treat each other from the time they enter the library until they leave. 83 groups were observed in both public and academic libraries, totalling 217 participants. The observations and analysis of the study results increase our understanding of collaborative behaviour, group characteristics and other influential factors, such as location, time, physical environment, ambience and layout of the library. Our study also compared the findings with some previous work on similar concepts. Most findings highlight possible implications of social and book interaction in digital libraries, and emphasise the need to support more group collaboration among users of Digital Libraries, without limitations of shared time or location
    • 

    corecore