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Auflistung nach Autor:in "Bareth, Ulrich"

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  • Konferenzbeitrag
    Algorithmic optimizations for energy-efficient monitoring of spatial objects on smartphones
    (INFORMATIK 2010. Service Science – Neue Perspektiven für die Informatik. Band 1, 2010) Bareth, Ulrich
    Location-based services are about to take the next step to proactive services which need continuous positioning for monitoring spatial objects. But so far that also results in severe battery drain in mobile devices due to deficient positioning APIs and the absence of energy-efficient positioning with several positioning methods. By using a hierarchical positioning concept this work provides a general algorithmic optimization to extend existing positioning APIs for energy-efficient positioning without diminishing accuracy. First prototypic implementations on Android handsets show a promising decrease in energy consumption.
  • Konferenzbeitrag
    Geofencing and background tracking - the next features in LBSs
    (INFORMATIK 2011 – Informatik schafft Communities, 2011) Küpper, Axel; Bareth, Ulrich; Freese, Behrend
    The upcoming generation of LBSs will be significantly determined by geofencing applications and background tracking. A geofence is a small geographic area that is defined to generate a location event as soon as a user enters or leaves this geofence and to process this event in the context of an LBS. Background tracking continuously monitors the whereabouts of a user and is thus the major prerequisite for detecting location events. Both functions can be regarded as important enablers for an improvement and broad establishment of information relevance in mobile environments. After an overview of the emergence of LBSs in the recent years, this article provides an introduction into geofencing and background tracking and demonstrates their working for location-based recommender systems.