Browsing by Author "Montabert, Cyril"

Now showing 1 - 4 of 4
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    Accounts from a Claims Reuse Experience: Design of an Airline Fares Tracker
    Montabert, Cyril; Tarpley, Anderson Ray III (Department of Computer Science, Virginia Polytechnic Institute & State University, 2007-12-01)
    Previous research efforts have led to the establishment of a repository of claims as reusable knowledge entities. Through the analysis, design, and prototyping of a notification system aimed at monitoring airfares across time, airlines, and location, this paper presents the various work-products resulting from a scenario-based design approach coupled with the Claims Reuse Library to support reuse-centric claims analysis. Finally, we share our experience and findings using the Claims Reuse Library as a core to knowledge transfer.
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    Performance Evaluation of Navigation Approaches on High-resolution Displays
    Menon, Suraj; Montabert, Cyril; Tungare, Manas; North, Christopher L. (Department of Computer Science, Virginia Polytechnic Institute & State University, 2007-12-01)
    We conducted a study to discover if the data navigation techniques suitable for high-resolution displays differed significantly from those traditionally used for single-screen desktop displays. The high-resolution capability of the former display makes it possible to show more data at once without having the user drill-down to get to the details. At the same time, the larger physical size makes it difficult for the user to interact with such a display using current day interaction techniques. Given these factors, we compare the performance of users on tasks that involve navigating into hierarchically-structured data. The specific visualization we use is a cushion treemap, displayed at multiple resolutions—on a 3x3, 17” tiled screen display; on a 2x2, 17” tiled screen display; on a single 17” screen display, and on a 66” SMART Board™. Through the performance evaluation of 24 users, we show that beyond a certain resolution and physical screen size, the drill-down technique fares relatively poorly, while the straightforward technique of displaying all the data at once results in better performance at the tasks we studied.
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    Study and Redesign of a Semi-public Display: Online Enlightenment
    Montabert, Cyril; Agarwal, Rahul; Lee, Christine; McCrickard, D. Scott (Department of Computer Science, Virginia Polytechnic Institute & State University, 2007-05-01)
    Semi-public displays are systems designed to strengthen awareness and collaboration among small co-located group environments. Placed in a semi-public space, Online Enlightenment is a physical device associated with MSN® Messenger to provide information regarding the online status of peers. The raison d'être of the system is to leverage group members’ awareness of their peers’ availability through changes of their online status in order to facilitate meeting scheduling, promote opportunistic collaboration, and foster project teamwork without introducing distraction. At an early stage of the development process, this paper presents the results of a usability study of the system and proposes a redesigned mock-up to address the identified deficiencies.
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    Supporting Requirements Reuse in a User-centric Design Framework through Task Modeling and Critical Parameters
    Montabert, Cyril (Virginia Tech, 2006-05-16)
    Many software systems fail as a direct consequence of errors in requirements analysis. Establishing formal metrics early in the design process, using attributes like critical parameters, enables designers to properly assess software success. While critical parameters alone do not have the potential to drive design, establishing requirements tied to critical parameters helps designers capture design objectives. For the design of interactive systems, the use of scenario-based approaches offers natural user centricity and facilitates knowledge reuse through the generation of claims. Unfortunately, the requirements-analysis phase of scenario-based design does not offer sufficient built-in and explicit techniques needed for capturing the critical-parameter requirements of a system. Because success depends heavily on user involvement and proper requirements, there is a crucial need for a requirements-analysis technique that bridges the gap between scenarios and critical parameters. Better establishing requirements will benefit design. By adapting task-modeling techniques to support critical parameters within the requirements-analysis phase of scenario-based design, we are able to provide designers with a systematic technique for capturing requirements in a reusable form that enables and encourages knowledge transfer early in the development process. The research work presented concentrates on the domain of notification systems, as previous research efforts led to the identification of three critical parameters. Contributions of this work include establishment of a structured process for capturing critical-parameter requirements within a user-centric design framework and introduction of knowledge reuse at the requirements phase. On one hand, adapting task models to capture requirements bridges the gap between scenarios and critical parameters, which benefits design from user involvement and accurate requirements. On the other hand, using task models as a reusable component leverages requirements reuse which benefits design by increasing quality while reducing development costs and time-to-market.