Publikationen

2021

• Recommendation on use of wind lidars

  Reuder, J., Cheynet, E., Clifton, A., van Dooren, M. F., Gottschall, J., Jakobsen, J. B., … Zasso, A. (2021). Recommendation on use of wind lidars. http://doi.org/10.5281/zenodo.4672351 (Original work published 2025)

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    • Schlipf, David

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  • 2021
  • Miscellaneous
  • • Joachim Reuder
    • Etienne Cheynet
    • Andy Clifton
    • Marijn van Dooren
    • Julia Gottschall
    • Jasna Jakobsen
    • Jakob Mann
    • Jose Palma
    • David Schlipf
    • Mikael Sjøholm
    • Juan-Jose Trujillo
    • Ludovic Thobois
    • Ines Würth
    • Alberto Zasso

• A Spectral Model of Grid Frequency for Assessing the Impact of Inertia Response on Wind Turbine Dynamics

  Guo, F., & Schlipf, D. (2021). A Spectral Model of Grid Frequency for Assessing the Impact of Inertia Response on Wind Turbine Dynamics. Energies, 14. http://doi.org/10.3390/en14092492 (Original work published 2025)

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    • Schlipf, David

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  • 2021
  • Journal Article
  • • Feng Guo
    • David Schlipf

• RTTPROBS: A RTT Probing Scheme for RTT Aware Multi-path Scheduling

  Lübben, R., Wette, P., & Gübner, S. (2021). RTTPROBS: A RTT Probing Scheme for RTT Aware Multi-path Scheduling. In . (Original work published 2025)

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    • Lübben, Ralf

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  • 2021
  • Conference Paper
  • • Ralf Lübben
    • Philip Wette
    • Sascha Gübner

• Teilwicklungsanlauf von Käfigläufermotoren mit kombinierter Stern-Dreieck-Wicklung

  Huth, G., & Löhlein, B. (2021). Teilwicklungsanlauf von Käfigläufermotoren mit kombinierter Stern-Dreieck-Wicklung. http://doi.org/10.1007/s00502-021-00900-6

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  Mit Rücksicht auf die Netzverhältnisse müssen Käfigläufermotoren mit einem geeigneten Anlaufverfahren an das Drehstromnetz geschaltet werden. Liegen, wie zum Beispiel bei Kompressoren, schwere Anlaufbedingungen vor, so kommt neben dem verstärkten Stern-Dreieck-Anlauf häufig der Teilwicklungsanlauf zum Einsatz. Wenn zur Steigerung der Energieeffizienz eine kombinierte Stern-Dreieck-Wicklung zum Einsatz kommt, bietet sich die Drehfeldwicklung zusätzlich auch für den Teilwicklungsanlauf an, wenn die kombinierte Wicklung als Parallelschaltung ausgeführt ist. Die Möglichkeiten hierzu werden unter Berücksichtigung des Oberfeldverhaltens analysiert und am Beispiel von zwei Käfigläufermotoren wird das Betriebsverhalten simulativ untersucht.

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  • 2021
  • Journal Article
  • • Gerhard Huth
    • Bernd Löhlein

• The impact of entrepreneurship on economic, social and environmental welfare and its determinants: a systematic review

  Neumann, T. (2021). The impact of entrepreneurship on economic, social and environmental welfare and its determinants: a systematic review, 71(3), 553–584,. http://doi.org/10.1007/s11301-020-00193-7

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  This paper presents a systematic review of (a) the impact of entrepreneurship on economic, social and environmental welfare and (b) the factors determining this impact. Research over the past 25 years shows that entrepreneurship is one cause of macroeconomic development, but that the relationship between entrepreneurship and welfare is very complex. The literature emphasizes that the generally positive impact of entrepreneurship depends on a variety of associated determinants which affect the degree of this impact. This paper seeks to contribute to the literature in three ways. First, it updates and extends existing literature reviews with the recently emerged research stream on developing countries, and incorporates studies analysing not only the impact of entrepreneurship on economic growth and welfare but also on social and environmental welfare. Second, it identifies and structures the current knowledge on the determinants of this impact. And third, it provides a roadmap for future research which targets the shortcomings of the existing empirical literature on this topic. The review of 102 publications reveals that the literature generally lacks research which (a) goes beyond the common measures of economic welfare, (b) examines the long-term impact of entrepreneurship and (c) focuses on emerging and developing countries. Regarding the determinants of the impact of entrepreneurship, the results highlight the need for empirical research which addresses both already investigated determinants which require more attention (e.g. survival, internationalisation, qualifications) and those which are currently only suspected of shaping the impact of entrepreneurship (e.g. firm performance, the entrepreneur’s socio-cultural background and motivations).

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  • 2021
  • Journal Article
  • • Thomas Neumann

• A Key Manipulation Attack on Some Recent Isogeny-Based Key Agreement Protocols

  Gönen, M. E., Tutdere, S., & Uzunkol, O. (2021). A Key Manipulation Attack on Some Recent Isogeny-Based Key Agreement Protocols. Bulletin of the Iranian Mathematical Society . http://doi.org/10.1007/s41980-021-00534-6

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  Recently, Daghigh et al. proposed some isogeny-based key agreement protocols in Bull. Iran. Math. Soc. 43 (2017), no. 4, 77-88. They claimed that their key exchange protocols based on supersingular isogenies provide the same security level as the Jao et al.’s protocol SIDH. This paper addresses first a vulnerability of these protocols to a key manipulation attack. Hence, unlike the security claims of Daghigh et al., these protocols unfortunately do not provide the same security when compared with SIDH. Second, we show in particular that the secret dual isogenies of the protocols can easily be retrieved by applying our key manipulation attack. We also discuss lastly the countermeasures to this attack.

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    • Uzunkol, Osmanbey

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

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  • 2021
  • Journal Article
  • • Mehmet Gönen
    • Seher Tutdere
    • Osmanbey Uzunkol

• Akademische (Weiter-)Bildung im Learning Hub

  Bartscher, T., & Nissen, R. (2021). Akademische (Weiter-)Bildung im Learning Hub. Deggendorf/Flensburg: i:ad-Studie 2021. (Original work published 2021)

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    • Bartscher, Thomas

  • Fachbereich

    • Fachbereich 4: Wirtschaft

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  • 2021
  • Report
  • • Thomas Bartscher
    • Regina Nissen

• Training Visuospatial And Visuomotor Skills For Ultrasound Imaging With A Game

  Teistler, M., Reinhold, S., Süncksen, M., & Mayer, L. (2021). Training Visuospatial And Visuomotor Skills For Ultrasound Imaging With A Game. In 107th Scientific Assembly and Annual Meeting (RSNA 2021). Chicago, IL, USA: Radiological Society of North America. (Original work published Dezember 2021)

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    • Teistler, Michael

  • Forschungsprojekt

    • Entwicklung und praktischer Einsatz virtueller und spielbasierter Lernsysteme in der medizinischen Bildgebung

  • 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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  • 2021
  • Conference Paper
  • • Michael Teistler
    • Sascha Reinhold
    • Matthias Süncksen
    • Lukas Mayer

• Digital Competences of Prospective Engineers and Science Teachers: A Latent Profile and Correspondence Analysis

  Schulze-Heuling, L., Wild, S., & Vest, A. (2021). Digital Competences of Prospective Engineers and Science Teachers: A Latent Profile and Correspondence Analysis. International Journal of Education in Mathematics, Science and Technology (IJEMST), 9(4), 760-782. http://doi.org/https://doi.org/10.46328/ijemst.1831 (Original work published Oktober 2021)

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    • Vest, Anja

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

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  • 2021
  • Journal Article
  • • Lydia Schulze-Heuling
    • Steffen Wild
    • Anja Vest

• The Physical Optimum as an Ideal Reference Value for Balancing Thermodynamic Processes Integrating the Exergetic Evaluation by the Example of Heat Supply

  Volta, D., & Weber, S. (2021). The Physical Optimum as an Ideal Reference Value for Balancing Thermodynamic Processes Integrating the Exergetic Evaluation by the Example of Heat Supply. MDPI Energies, 14(15), 15. http://doi.org/https:// doi.org/10.3390/en14154426 (Original work published Juli 2021)

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  This paper contains the basic definition and application of the physical optimum as a method for process evaluation and optimization. By means of the exemplary balance of a wood pellet-fired boiler, the conventional efficiency is compared to the PhO. Furthermore, this study demonstrates the possibility of applying the thermodynamic state variable exergy as a physical reference property of a system within the PhO method. To explain the approach, the heat generation in the wood pellet-fired boiler is compared to the supply from a heat pump, which itself is connected to a power plant. Furthermore, the process-independent PhO is explained in order to illustrate the limitations of feasible optimization. Additionally, possible research topics such as the inte-gration of dynamic behavior in the method are approached. As a conclusion, the differences be-tween the methods outline the advantage of the PhO in the optimization process.

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    • Volta, Dirk
    • Rohm, Samanta Alena

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

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  • 2021
  • Journal Article
  • • Dirk Volta
    • Samanta Weber
  • • physical optimum
    • PhO
    • reference process
    • energy efficiency
    • energy optimization
    • method comparison
    • energy