Publikationen

2022

• Simplified dynamic inflow for control engineering models

  Geisler, J. . (2022). Simplified dynamic inflow for control engineering models. In Torque 2022. Delft: IOP Publishing. http://doi.org/10.1088/1742-6596/2265/3/032101 (Original work published Mai 2022)

  Abstract

  anzeigen ▸

  Simplified turbine models are needed wherever computational resources are limited and the model needs to run in real-time or faster, or when it is used in analytical procedures such as linearization. These use cases are typically given in control engineering applications, especially advanced methods such as nonlinear model predictive control or state estimation. Many such models with varying levels of detail have been proposed, but most of them rely on a quasi-stationary, rotor averaged/effective representation of aerodynamic forces. Unsteady aerodynamic effects such as dynamic inflow (sometimes referred to as dynamic wake) or dynamic stall are usually neglected. But with ever more advanced methods more detailed yet still computationally efficient models are needed. Therefore, this work proposes an approach for adding the effect of dynamic inflow to any rotor effective force or moment that was previously modeled as quasi-stationary. Novel to this work is the suitability for nonlinear as well as linear models and a focus on computational efficiency while still optimally recreating the effect.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Geisler, Jens

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Conference Paper
  • • Jens Geisler

• Netzintegration von Windenergieanlagen

  Jauch, C. . (2022). Netzintegration von Windenergieanlagen. In Einführung in die Windenergietechnik (3. Aufl., S. 407–471). München: Carl Hanser Verlag. http://doi.org/10.3139/9783446473225.010 (Original work published April 2022)

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Jauch, Clemens

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Book Chapter
  • • Prof. Dr. Clemens Jauch

• Two-loop prediction of the anomalous magnetic moment of the muon in the Two-Higgs Doublet Model with GM2Calc 2

  Athron, P. ., Balazs, C. ., Cherchiglia, A. ., Jacob, D. H. J., Stöckinger, D. ., Stöckinger-Kim, H. ., & Voigt, A. . (2022). Two-loop prediction of the anomalous magnetic moment of the muon in the Two-Higgs Doublet Model with GM2Calc 2. The European Physical Journal C, 82, 31. http://doi.org/10.1140/epjc/s10052-022-10148-9 (Original work published März 2022)

  Abstract

  anzeigen ▸

  We present an extension of the GM2Calc software to calculate the muon anomalous magnetic moment (a_μ^BSM) in the Two-Higgs Doublet Model. The Two-Higgs Doublet Model is one of the simplest and most popular extensions of the Standard Model. It is one of the few single field extensions that can give large contributions to a_μ^BSM. It is essential to include two-loop corrections to explain the long standing discrepancy between the Standard Model prediction and the experimental measurement in the Two-Higgs Doublet Model. The new version GM2Calc 2 implements the state of the art two-loop calculation for the general, flavour violating Two-Higgs Doublet Model as well as for the flavour aligned Two-Higgs Doublet Model and the type I, II, X and Y flavour conserving variants. Input parameters can be provided in either the gauge basis or the mass basis, and we provide an easy to use SLHA-like command-line interface to specify these. Using this interface users may also select between Two-Higgs Doublet Model types and choose which contributions to apply. In addition, GM2Calc 2 also provides interfaces in C++, C, Python and Mathematica, to make it easy to interface with other codes.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Journal Article
  • • Peter Athron
    • Csaba Balazs
    • Adriano Cherchiglia
    • Douglas Jacob
    • Dominik Stöckinger
    • Hyejung Stöckinger-Kim
    • Alexander Voigt
  • • arXiv
    • Higgs
    • Muon
    • magnetic moment
    • Teilchenphysik

• Comparison of the Energetic Efficiency of Gas Separation Technologies Using the Physical Optimum by the Example of Oxygen Supply Options

  Weber, S. ., Volta, D. ., & Kuck, J. . (2022). Comparison of the Energetic Efficiency of Gas Separation Technologies Using the Physical Optimum by the Example of Oxygen Supply Options. Energies, Energies 15(5), 22. http://doi.org/https://doi.org/10.3390/en15051855 (Original work published März 2022)

  Abstract

  anzeigen ▸

  This study applies the Physical Optimum (PhO) as a reference value to rate the efficiency of two technical options for the oxygen supply of a hospital. The systematic comparison of the alternative processes using the PhO as a benchmark for the minimum input (exergy in this case) required to run a process with a certain benefit allows to determine the potential for optimization of each technology. Differences are analyzed by visualizing the losses of each individual production step in a process as well as by the resulting overall energy demand, including the primary energy. Possible alternatives are purchasing liquid oxygen from a cryogenic process or the production by means of Pressure Swing Adsorption (PSA) on site. The cryogenic production shows a lower exergy demand even though it also has a higher potential for optimization. Yet, the total losses, significantly impacted by the unavoidable transportation, sum up, resulting in the conclusion that the PSA is the preferable option overall, considering energy aspects. Finally, additional criteria such as economic, legal, and structural consequences of the respective choices are briefly outlined.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Rohm, Samanta Alena
    • Volta, Dirk

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Journal Article
  • • Samanta Weber
    • Dirk Volta
    • Jürgen Kuck

• Potential of Onshore Wind Turbine Inertia in Decarbonising the Future Irish Energy System

  Thiesen, H. ., & Jauch, C. . (2022). Potential of Onshore Wind Turbine Inertia in Decarbonising the Future Irish Energy System. Applied Sciences, 12(6), 16. http://doi.org/10.3390/app12062984 (Original work published März 2021)

  Abstract

  anzeigen ▸

  Power system inertia is an essential part for grid frequency stability and decreases due to the replacement of fossil fuel fired power plants with variable renewable energy sources. This development is not represented sufficiently in unit commitment and economic dispatch models. If considered at all, only synchronous inertia from fossil fuel driven power plants is modelled. This results in increased CO2 emissions, curtailed renewable energy and high system costs. While wind turbines are a source for synthetic inertia and an important renewable energy source, their capability to provide inertia is not incorporated into energy system models. The work at hand closes this research gap and applies a methodology to depict synthetic inertia provided by wind turbines as part of the optimisation dispatch model. A unit commitment and economic inertia dispatch model of the the all-Island Irish power system is created. The potential of wind inertia is analysed and quantified by assessing CO2 emissions, curtailed renewable energy and system costs. Results show that synthetic inertia provided by wind turbines can save up 30.99% of the CO2 emissions, reduce curtailment by up to 39.90% and reduce system costs by 32.72%.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Thiesen, Henning
    • Jauch, Clemens

  • Abteilung/Einrichtung

    • Wind Energy Technology Institute

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Journal Article
  • • Henning Thiesen
    • Prof. Dr. Clemens Jauch

• FlexibleDecay: An automated calculator of scalar decay widths

  Athron, P. ., Büchner, A. ., Harries, D. ., Kotlarski, W. ., Stöckinger, D. ., & Voigt, A. . (2022). FlexibleDecay: An automated calculator of scalar decay widths. Computer Physics Communications, 283, 27. http://doi.org/https://doi.org/10.1016/j.cpc.2022.108584 (Original work published Februar 2023)

  Abstract

  anzeigen ▸

  We present FlexibleDecay, a tool to calculate decays of scalars in a broad class of BSM models. The tool aims for high precision particularly in the case of Higgs boson decays. In the case of scalar and pseudoscalar Higgs boson decays the known higher order SM QED, QCD and EW effects are taken into account where possible. The program works in a modified MS scheme that exhibits a decoupling property with respect to heavy BSM physics, with BSM parameters themselves treated in the MS/DR-scheme allowing for an easy connection to high scale tests for, e.g., perturbativity and vacuum stability, and the many observable calculations readily available in MS/DR programs. Pure BSM effects are taken into account at the leading order, including all one-loop contributions to loop-induced processes. The program is implemented as an extension to FlexibleSUSY, which determines the mass spectrum for arbitrary BSM models, and does not require any extra configuration from the user. We compare our predictions for Higgs decays in the SM, singlet extended SM, type II THDM, CMSSM and MRSSM, as well as for squark decays in the CMSSM against a selection of publicly available tools. The numerical differences between our and other programs are explained. The release of FlexibleDecay officially deprecates the old effective couplings routines in FlexibleSUSY.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Journal Article
  • • Peter Athron
    • Adam Büchner
    • Dylan Harries
    • Wojciech Kotlarski
    • Dominik Stöckinger
    • Alexander Voigt
  • • arXiv
    • Teilchenphysik
    • Higgs
    • BSM
    • Decays

• Kommunikative Bedingungen maschineller Übersetzbarkeit

  Wittkowsky, M. . (2022). Kommunikative Bedingungen maschineller Übersetzbarkeit. Fach - Sprache - Kommunikation (Bd. 3, S. 309). Franziska Heidrich-Wilhelms und Klaus Schubert. http://doi.org/10.18442/fsk-3 (Original work published Februar 2022)

  Abstract

  anzeigen ▸

  Kann ein regelbasiertes maschinelles Übersetzungssystem eine annehmbare Zieltextqualität generieren? Und wenn ja, wie? Diese Arbeit verbindet die beiden großen Themen Übersetzung und die Redaktion über den Untersuchungsgegenstand der Optimierung maschinell übersetzter Texte. Es werden unter anderem Gemeinsamkeiten in der digitalen Auszeichnung von Sprachdaten für informationsverwaltende Systeme und in der semantischen Kennzeichnung für regelbasierte MÜ Systeme betrachtet. Neben den Untersuchungsergebnissen liefert die Arbeit Vorschläge zur Optimierung der kommunikativen Bedingungen für die regelbasierte MÜ. Neben diesen Inhalten beleuchtet die Autorin Prozesse und Akteure sowie Herausforderungen im Fachgebiet der mehrsprachigen Fachkommunikation.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Wittkowsky, Marion

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

  Filter Tags

  • 2022
  • Book
  • • Marion Wittkowsky

• Comparison of methods for the calculation of the real dilogarithm regarding instruction-level parallelism

  Voigt, A. . (2022). Comparison of methods for the calculation of the real dilogarithm regarding instruction-level parallelism. http://doi.org/https://doi.org/10.48550/arXiv.2201.01678 (Original work published Januar 2022)

  Abstract

  anzeigen ▸

  We compare different methods for the computation of the real dilogarithm regarding their ability for using instruction-level parallelism when executed on appropriate CPUs. As a result we present an instruction-level-aware method and compare it to existing implementations.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2022
  • Unpublished
  • • Alexander Voigt
  • • arXiv
    • dilogarithm
    • C

• Good Tech and Social Good: Value Creation by Korean Social and High-Tech Oriented Start-Ups

  Berg, S.-H. ., & Mitra, J. . (2022). Good Tech and Social Good: Value Creation by Korean Social and High-Tech Oriented Start-Ups. Volume 8 Issue 1, 8(1), 29–45. Abgerufen von https://EconPapers.repec.org/RePEc:sae:jouent:v:8:y:2022:i:1:p:29-45

  Abstract

  anzeigen ▸

  Through an exploration of Korean high-tech social enterprises, we aim to identify and explore critically (a) how socially engaged, early stage, high technology firms combine social and economic objectives with which to scale up their ventures; and (b) how socially engaged firms seek entrepreneurial opportunity development, including the internationalisation process and the support of stake holding institutions to help scale up the value creation process. We highlight ‘people’, ‘organisations’ and the ‘environment’ dimensions, enabling an understanding of the drivers of socially entrepreneurial activity both from individual and societal perspectives. The analytical framework of our study is based on empirical data acquired from individual in-depth interviews, group interviews, active participatory observations and survey data from 2018 to 2021. We found that social motivation and objectives of the entrepreneurs are equally strong drivers and that they are the principal factors for the scaling up process. The motivation is strengthened by the proactive role of government initiatives which also attract other key stakeholders in the growth process. A combination of digital technology with a high degree of social motivation of the entrepreneurs tends to lead to the development of international market opportunities and attract the interests of international foundations.

  • Suche auf Google Scholar

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Abteilung/Einrichtung

    • Jackstädt-Zentrum Flensburg (JZF)

  • Profilbereich

    • Start-up- und KMU-Management

  • Forschungsfeld

    • Entrepreneurship

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2022
  • Journal Article
  • • Su-Hyun Berg
    • Jay Mitra
  • • Social and technological entrepreneurship
    • high-tech start-ups
    • digital technology
    • South Korea
    • internationalisation

• LSP Teacher Training Summer School . The TRAILs project

  Chateaureynaud, M.-A. . (Hrsg.). (2022). LSP Teacher Training Summer School . The TRAILs project. Champs Didactiques Plurilingues : données pour des politiques stratégiques (Bd. 13, S. 280). Brüssel (Belgien): Peter Lang. http://doi.org/10.3726/b20096

  Abstract

  anzeigen ▸

  This book is the result of research carried out in partnership with seven European universities as part of an Erasmus+ project on training teachers of Language for Specifi c Purpose (LSP) in higher education. All university partners, i.e. Bordeaux (France), Zagreb (Croatia), Jade (Germany), Cádiz (Spain), Adam Mickiewicz (Poland), Ljubljana (Slovenia), Arcola Research (UK), and Bergamo (Italy) carried out surveys and developed a detailed report showing that in Europe there is very little training for this type of teaching, and that teachers generally need to be trained in the specifi cities of the language fi eld they are going to teach. Medical or maritime English, legal Spanish, French for tourism, etc. require both an expert domain knowledge and a grounding in language teaching. Several testimonies highlight this situation and show the lack of career development prospects for LSP teachers at European universities. The members of the Erasmus+ TRAILs project have therefore been interested in the specifi c needs of LSP teachers and have been able to update the information through several types of surveys. The competences of LSP teachers were thus identifi ed. Based on this precise inventory, they are proposing to draw up a complete training programme. A pedagogical approach has been developed: resources, lesson preparation, course design, innovative pedagogical approaches are presented. The research presented in this book goes well beyond the TRAILs project and questions the training of specialised language teachers. More generally, it highlights the need to provide effective training and professional development for LSP teachers and offers a contribution to overcoming the shortcomings of LSP teacher education.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

  • BibTeX
  • EndNote X3 XML
  • EndNote 7 XML
  • EndNote tagged
  • RIS

  Weiterführende Links

  anzeigen ▸

  • Abteilung/Einrichtung

    • CIVU – Center for Interaction, Visualization and Usability

  • Profilbereich

    • Informatik und Gestaltung

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

  Filter Tags

  • 2022
  • Book
  • • Marie-Anne Chateaureynaud