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Auflistung nach Autor:in "Klein, Florian"

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  • Konferenzbeitrag
    Asynchronous logging and fast recovery for a large-scale distributed in-memory storage
    (Informatik 2014, 2014) Beineke, Kevin; Klein, Florian; Schöttner, Michael
    Large-scale interactive applications and online graph analytic processing require very fast data access to many small data objects. DXRAM addresses these challenges by keeping all data always in memory of potentially many nodes aggregated in a data center. Data loss in case of node failures is prevented by an asynchronous logging on flash disks. In this paper we present the architecture of a novel logging service designed to support billions of small data objects, flash disk characteristics and fast node recovery. The latter is challenging if 32-64 GB of in-memory data of a failed node needs to be recovered in seconds from the logs.
  • Zeitschriftenartikel
    Evaluation of Mixed Reality Support for Bridge Inspectors Using BIM Data - Digital Prototype for a Manual Task with a Long-Lasting Tradition
    (i-com: Vol. 21, No. 2, 2022) Riedlinger, Urs; Klein, Florian; Hill, Marcos; Lambracht, Christian; Nieborowski, Sonja; Holst, Ralph; Bahlau, Sascha; Oppermann, Leif
    Bridge inspectors work for the safety of our infrastructure and mobility. In regular intervals, they conduct structural inspections – a manual task with a long-lasting and firmly normed analogue tradition. In our collaborative research project, we developed Mixed Reality (MR) and Virtual Reality (VR) prototypes to support that work digitally. We propose a mixed analogue and digital workflow using Building Information Modeling (BIM) data that can be ready-to-hand for bridge inspectors during their work on-site at a bridge. In this paper, we describe the system and the evaluation results of our final MR demonstrator at a autobahn-bridge in Germany. We identified a need for a digital MR tool to support the bridge inspection in-situ. In general, this matches with the trend to bring the computer-supported office-work out into the real world. However, there are also challenges to consider, like lacking BIM data for existing bridges and structures, appropriate user-interfaces in this new application domain, or the need to adopt norms and guidelines for public tender. We argue to consider a user-centered design approach for future developments to best profit from the bridge inspectors’, as well as the MR- and CSCW-researchers expertise, and ultimately increase the acceptance of the developed information systems.