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    Pebbles and Urns: A Tangible, Presence-Based Service Delivery Framework

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    Date
    2013-01-11
    Author
    Plymale, William O.
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    Abstract
    Wireless and pervasive computing research continues to study ways the Internet of Things (IoT)
    can make lives easier and more productive. Areas of interest include advances in new
    architectures and frameworks that support large-scale IoT deployments beyond research
    prototypes, simple and inexpensive human-to-device and device-to-device interfaces, and user
    decision making support with opportunistic information services.

    This dissertation investigates the design and implementation of a general-purpose framework
    upon which IoT and opportunistic computing (OC) systems can be built.

    The result of this work is Pebbles and Urns (P&U), a casually accessible system designed to
    deliver information to a person that is pertinent and beneficial to them with respect to their
    current activity, location and other contexts. P&U is a proximity-based information delivery
    framework that leverages a simple, inexpensive tangible interface and context-rich, physicallysituated,
    distributed information repositories. By its proposed use of enforced proximity, local
    context, and location-specific services, P&U can support the situated interaction between user
    and place.

    The P&U framework is based on a layered architecture consisting of an isolated physical
    communication layer, a data repository supporting opportunistic service composition and
    delivery, and a controller/interface providing user feedback. Serving as a potential IoT design
    pattern, P&U application developers can use the framework API\'s and software tools to build
    and deploy P&U systems.

    As validation of this work, P&U prototypes are constructed using the framework, API\'s and
    software tools. The prototypes are based on use cases depicting a person engaged in the day-today
    activities of attending class, going to the gym and grocery shopping. Performance
    measurements are performed on the prototypes profiling core components of the framework.
    Results indicate proper functioning of P&U tangible interfaces, communication connections,
    service request and delivery, and internal framework operations.

    Contributions of this research include a general-purpose framework, a simple IoT interface and
    an opportunistic engine.
    URI
    http://hdl.handle.net/10919/19223
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    • Doctoral Dissertations [14916]

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