Publikationen

2020

• Simulation of scattered radiation during intraoperative imaging in a virtual reality learning environment

  Süncksen, M. ., Bott, O. ., Dresing, K. ., & Teistler, M. . (2020). Simulation of scattered radiation during intraoperative imaging in a virtual reality learning environment. International Journal of Computer Assisted Radiology and Surgery , 15, 691–701. http://doi.org/10.1007/s11548-020-02126-x (Original work published April 2020)

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  Purpose Scattered radiation, which occurs when using a C-arm for intraoperative radiography, can be better understood through interactive visualization. We developed a virtual reality (VR) approach for the simulation of scattered radiation (SSR) as part of a C-arm training system. In VR, it is important to avoid cyber sickness, which is often caused by increased latency between head motion and image presentation inside the head-mounted display. As the latency requirement interferes with the computational complexity of the SSR, the goal has been to maintain a low latency during the simultaneous computation of the SSR on moderate-cost consumer hardware. Methods For use with a VR C-arm simulator, a CUDA-based Monte Carlo SSR has been improved to utilize GPU resources unused by the VR image generation. Resulting SSR data are visualized through volume rendering with pseudo-colored scattered radiation superimposed onto the virtual operating room. The resulting interactive VR–SSR environment was evaluated with operating room personnel (ORP) and surgeons using questionnaires. Results Depending on the imaged body part and computation parameters, the required computation time to complete one SSR run was between 1.6 and 4.2 s (ankle) and between 7.9 and 14.9 s (thigh), and VR frame times from 11 to 12 ms (95th percentile). The system was evaluated with ORP (n = 46) and surgeons (n = 25). The median of professional C-arm experience was 5 (range 1 to 34) years (ORP) and 12.5 (range 2 to 48) years (surgeons), respectively. The demonstrated prototype was found useful by 78% of ORP and 88% of the surgeons. On a Likert scale, more than 90% of both groups “agreed fully” that the presented way of visualizing SSR in VR helps understanding intraoperative exposure to scattered radiation. Conclusions Leveraging off-the-shelf computer equipment, the feasibility of SSR and VR for interactive training has been demonstrated. Evaluation participants showed a high interest for the presented approach. Feedback suggests that the visualization experienced by the users helps understanding radiation hazards in the operating room.

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    • Teistler, Michael

  • Forschungsprojekt

    • Computerbasierte Ausbildung in der Medizinischen Bildgebung durch virtuelle und spielbasierte Lernumgebungen

  • Abteilung/Einrichtung

    • CIVU – Center for Interaction, Visualization and Usability

  • Profilbereich

    • Informatik und Gestaltung

  • Forschungsfeld

    • Digitalisierung im Gesundheitswesen
    • Human-Computer-Interaction

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

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  • 2020
  • Journal Article
  • • Matthias Süncksen
    • Oliver Bott
    • Klaus Dresing
    • Michael Teistler

• Not up to Standard! Creating a Global Assessment Framework and Universal Proficiency Test for Maritime English.

  Noble, A. ., Van Son, L. ., & John, P. . (2020). Not up to Standard! Creating a Global Assessment Framework and Universal Proficiency Test for Maritime English. In Strategies and Analyses of Language and Communication in Multilingual and International Contexts (S. 10). Cambridge (UK): Cambridge Scholars Publishing. Abgerufen von https://www.cambridgescholars.com/product/978-1-5275-4324-9 (Original work published Februar 2020)

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    • John, Peter

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

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  • 2020
  • Book Chapter
  • • Alison Noble
    • Ludwina Van Son
    • Peter John

• Navigation in Desktop 3D Games with Gamepads: Comparison of Two Approaches for Inexperienced Players

  Wentzlaff, T. ., Janke, F. ., Kockmeyer, M. ., Reinhold, S. ., & Teistler, M. . (2020). Navigation in Desktop 3D Games with Gamepads: Comparison of Two Approaches for Inexperienced Players. In Proceedings of the Conference on Mensch Und Computer (S. 165–168). New York, NY, USA: Association for Computing Machinery. http://doi.org/10.1145/3404983.3410018

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  Common approaches for gamepad-based navigation in desktop 3D games are often not suited for inexperienced players. In particular, novices have difficulties in simultaneously controlling movement and viewing direction in a virtual 3D scene. Here, we compare the currently predominant 3D navigation approach with an alternative approach that is inspired by early 3D games. 20 test users with little or no 3D gaming experience used both approaches to walk along a test course in a virtual 3D scene containing different obstacles. Using the alternative navigation approach, the users finished the course faster and with fewer errors than with the predominant navigation approach. In addition, the pragmatic and the hedonic quality of the alternative approach were rated higher. As a conclusion, the presented alternative approach should be given consideration when designing 3D (serious) games or similar applications for inexperienced players, not only for gamepad-based navigation, but also for comparable interfaces like the typical combination of keyboard and mouse control.

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    • Teistler, Michael

  • Abteilung/Einrichtung

    • CIVU – Center for Interaction, Visualization and Usability

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

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  • 2020
  • Conference Paper
  • • Tobias Wentzlaff
    • Felix Janke
    • Mats Kockmeyer
    • Sascha Reinhold
    • Michael Teistler
  • • inexperienced users
    • serious games
    • gamepad
    • 3D games
    • user performance

• 16 Biotechnology of Marine Fungi: New Workhorses and Applications

  Kramer, A. ., & Labes, A. . (2020). 16 Biotechnology of Marine Fungi: New Workhorses and Applications. The Mycota III. http://doi.org/10.1007/978-3-030-49924-2_16

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  • 2020
  • Journal Article
  • • Annemarie Kramer
    • Antje Labes

• First Eigenmodes Simulation Model of a Wind Turbine - for Control Algorithm Design

  Jauch, C. . (2020). First Eigenmodes Simulation Model of a Wind Turbine - for Control Algorithm Design. http://doi.org/10.13140/RG.2.2.17192.19204

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    • Jauch, Clemens

  • Abteilung/Einrichtung

    • Wind Energy Technology Institute

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  • 2020
  • Report
  • • Prof. Dr. Clemens Jauch
  • • WETI

• Sustainability Prerequisites and Practices in Textile and Apparel Supply Chains

  Warasthe, R. ., Schulz, F. ., Enneking, R. ., & Brandenburg, M. . (2020). Sustainability Prerequisites and Practices in Textile and Apparel Supply Chains. Sustainability, 12. http://doi.org/10.3390/su12239960

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  The proposed study deals with sustainable supply chain management (SSCM) in the textile and apparel (T&A) industry. We analyze prerequisites and practices of supply chain (SC) sustainability in a multiple case study of the German and Ethiopian T&A industry. Our analysis is based on ten semi-structured interviews conducted with the managers of seven companies in the Ethiopian T&A production and the German fair fashion retail industries. The contribution of expert knowledge helps in identifying SC sustainability prerequisites and practices. The chosen cases of production in Ethiopia and retail in Germany highlight the complexity of T&A SCs while representing both the suppliers’ and retailers’ perspectives, which is rare in the related literature. As a major research contribution, the study adapts a framework for SC sustainability in the chemical industry and transfers it to T&A SCs. Moreover, practitioners from the T&A industry find useful insights into relevant practices and their prerequisites, which helps in improving SC sustainability in this sector. The study reveals that management orientation and interest groups such as customers represent the most important prerequisites for sustainability. Manufacturers rely more on internal practices such as monitoring, while retailers focus on external sustainability practices, such as supplier development. In a comparative approach, similarities and differences between T&A SCs and the chemical industry are identified.

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    • Brandenburg, Marcus

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  • 2020
  • Journal Article
  • • Ronak Warasthe
    • Finja Schulz
    • Ralf Enneking
    • Marcus Brandenburg

• C++ für Dummies

  Willemer, A. . (2020). C++ für Dummies (S. 464). Weinheim: Wiley-VCH.

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    • Willemer, Arnold

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

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  • 2020
  • Book
  • • Arnold Willemer

• A systematic mapping of test case generation techniques using UML interaction diagrams

  Minhas, N. M., Masood, S. ., Petersen, K. ., & Nadeem, A. . (2020). A systematic mapping of test case generation techniques using UML interaction diagrams. Journal of Software: Evolution and Process, 32, e2235.

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  • Personenseiten

    • Petersen, Kai

  • Abteilung/Einrichtung

    • FLAIR - Flensburg Artificial Intelligence Research

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  • 2020
  • Journal Article
  • • Nasir Minhas
    • Sohaib Masood
    • Kai Petersen
    • Aamer Nadeem

• A Real-time Distributed Toolkit to Ease Children’s Exploration of IoT

  Wallbaum, T. ., Ananthanarayan, S. ., Matviienko, A. ., & Boll, S. C. (2020). A Real-time Distributed Toolkit to Ease Children’s Exploration of IoT. In Proceedings of the 11th Nordic Conference on Human-Computer Interaction: Shaping Experiences, Shaping Society (S. 1–9).

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    • Wallbaum, Torben

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

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  • 2020
  • Conference Paper
  • • Torben Wallbaum
    • Swamy Ananthanarayan
    • Andrii Matviienko
    • Susanne Boll

• Rapid Metabolome and Bioactivity Profiling of Fungi Associated with the Leaf and Rhizosphere of the Baltic Seagrass Zostera marina

  Petersen, L.-E. ., Marner, M. ., Labes, A. ., & Tasdemir, D. . (2020). Rapid Metabolome and Bioactivity Profiling of Fungi Associated with the Leaf and Rhizosphere of the Baltic Seagrass Zostera marina, Online-Ressource. http://doi.org/10.3390/md17070419

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  • 2020
  • Journal Article
  • • Lars-Erik Petersen
    • Michael Marner
    • Antje Labes
    • Deniz Tasdemir