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GVU Technical Report Series

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Author: Stasko, John T. × Author: McCrickard, D. Scott ×

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    Evaluating Animation as a Mechanism for Maintaining Peripheral Awareness
    (Georgia Institute of Technology, 2000) McCrickard, D. Scott ; Stasko, John T. ; Catrambone, Richard
    Animation is becoming increasingly used to communicate information within some limited viewing area. Little is known, however, about the effectiveness and the possible distractions of animation used in this way. This article describes an initial experiment exploring the information awareness and distraction capabilities of different styles of animation.
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    Exploring Animation as a Presentation Technique for Dynamic Information Sources
    (Georgia Institute of Technology, 1999) McCrickard, D. Scott ; Stasko, John T. ; Zhao, Qiang Alex
    The constantly growing and changing nature of certain information sources creates new problems in presenting it to the user. While it may be desirable to maintain awareness of changes to this information, it is typically not a person's primary task. This article describes how animation can be used to communicate dynamic information in a limited space and with limited disruption to the user. We focus on a study on the preferences and reactions of twenty-five participants to tkscore, an application that presents NCAA Tournament game scores using a variety of different animated displays. Results from the study are provided along with future research directions.
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    PML: Representing Procedural Domains for Multimedia Presentations
    (Georgia Institute of Technology, 1998) Ram, Ashwin ; Catrambone, Richard ; Guzdial, Mark ; Kehoe, Colleen Mary ; McCrickard, D. Scott ; Stasko, John T.
    A central issue in the development of multimedia systems is the presentation of the information to the user of the system and how to best represent that information to the designer of the system. Typically, the designers create a system in which content and presentation are inseparably linked; specific presentations and navigational aids are chosen for each piece of content and hard-coded into the system. We argue that the representation of content should be decoupled from the design of the presentation and navigational structure, both to facilitate modular system design and to permit the construction of dynamic multimedia systems that can determine appropriate presentations in a given situation on the fly. We propose a new markup language called PML (Procedural Markup Language) which allows the content to be represented in a flexible manner by specifying the knowledge structures, the underlying physical media, and the relationships between them using cognitive media roles. The PML description can then be translated into different presentations depending on such factors as the context, goals, presentation preferences, and expertise of the user.
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    Real Clock Time Animation Support for Developing Software Visualizations
    (Georgia Institute of Technology, 1995) Stasko, John T. ; McCrickard, D. Scott
    Developers building software visualizations must use a graphics library and user interface toolkit as an underlying support platform. Often, these support environments are large, difficult to learn, low-level, and lacking primitives for capabilities such as animation. We have developed a graphics support environment called Polka-RC for building software visualizations. Polka-RC is a second generation system that leverages the continuous animation primitives of the mature system Polka, and adds the capability of specifying real clock time-based animation activations and durations. The new Polka-RC animation model also provides a flexible multiprocess program-to-visualization mapping. In this article we describe the Polka-RC methodology, list advantages of the approach, and describe how the methodology influences the design of software visualizations and algorithm animations.