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Auflistung nach Autor:in "Wieland, Jonathan"

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  • Konferenzbeitrag
    Loci Spheres: A Mobile App Concept Based on the Method of Loci
    (Mensch und Computer 2017 - Tagungsband, 2017) Wieland, Jonathan; Müller, Jens; Pfeil, Ulrike; Reiterer, Harald
    The method of loci is a technique to memorize large quantities of information by associating the items to be learned with familiar places (loci). The effectiveness of the technique has been well established, but the initial creation of the loci can be a tedious task. With the aim of supporting flexible learning in situ, we introduce Loci Spheres, a novel concept which facilitates the creation of loci using mobile devices. We present three variants which support the technique to varying degrees: spatial loci (uses spatial input) and panning loci (uses panning) to define and navigate the loci, and no loci (baseline condition), where users have to create the loci within their imagination. In an in-the-wild study we investigated perceived system support, usage behavior, and effectiveness of the three variants. With this work we introduce a novel memorization tool which addresses the potential barrier involved in loci creation and provide a set of four design principles on how to leverage the technique with mobile devices in everyday situations.
  • Konferenzbeitrag
    A Qualitative Comparison Between Augmented and Virtual Reality Collaboration with Handheld Devices
    (Mensch und Computer 2019 - Tagungsband, 2019) Müller, Jens; Zagermann, Johannes; Wieland, Jonathan; Pfeil, Ulrike; Reiterer, Harald
    Handheld Augmented Reality (AR) displays offer a see-through option to create the illusion of virtual objects being integrated into the viewer's physical environment. Some AR display technologies also allow for the deactivation of the see-through option, turning AR tablets into Virtual Reality (VR) devices that integrate the virtual objects into an exclusively virtual environment. Both display configurations are typically available on handheld devices, raising the question of their influence on users' experience during collaborative activities. In two experiments, we studied how the different display configurations influence user experience, workload, and team performance of co-located and distributed collaborators during a spatial referencing task. A mixed-methods approach revealed that participants' opinions were polarized towards the two display configurations, regardless of the spatial distribution of collaboration. Based on our findings, we identify critical aspects to be addressed in future research to better understand and support co-located and distributed collaboration using AR and VR displays.