Publikationen

2020

• Inducing the Chemodiversity of Fucus vesiculosus-Derived Fungi by OSMAC Strategy for Discovery of New Anticancer Leads

  Fan, B. ., Tasdemir, D. ., & Labes, A. . (2020). Inducing the Chemodiversity of Fucus vesiculosus-Derived Fungi by OSMAC Strategy for Discovery of New Anticancer Leads (S. Online-Ressource). Kiel: Universitätsbibliothek Kiel.

  • Suche auf Google Scholar

  Exportformate

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

  Filter Tags

  • 2020
  • Book
  • • Bicheng Fan
    • Deniz Tasdemir
    • Antje Labes

• Development of a Flexible Lightweight Hydraulic-Pneumatic Flywheel System for Wind Turbine Rotors

  Alhrshy, L. ., Jauch, C. ., & Kloft, P. . (2020). Development of a Flexible Lightweight Hydraulic-Pneumatic Flywheel System for Wind Turbine Rotors. Fluids, 5. http://doi.org/10.3390/fluids5040162

  Abstract

  anzeigen ▸

  In this paper, the design of a flexible piston accumulator for application in a hydraulic-pneumatic flywheel system in a wind turbine rotor is presented. The flywheel system enables a wind turbine to vary the inertia of its rotor blades to control the power output and, most importantly, to influence the vibratory behaviour of wind turbine components. The method used for designing the flexible accumulator is based on the one hand on test results of a flexible piston accumulator prototype, and on the other hand, on simulation results of a model of a flexible piston accumulator. As a result, a design of flexible piston accumulators for application in the flywheel system is implemented and compared with the design of conventional steel accumulators. Due to the proposed design of the flywheel system, the impact on the mechanical loads of a wind turbine is analysed. The simulation results show that the new design of the piston accumulators causes a lower impact on the mechanical loads of the wind turbine than a previously published design of piston accumulators. It is further shown that the considered wind turbine can take on the flywheel system without the need for reinforcements in the rotor blades.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Alhrshy, Laurence
    • Jauch, Clemens

  • Forschungsprojekt

    • Schwungrad

  • Abteilung/Einrichtung

    • Wind Energy Technology Institute

  • Fachbereich

    • Fachbereich 2: Energy and Life Science

  Filter Tags

  • 2020
  • Journal Article
  • • Laurence Alhrshy
    • Prof. Dr. Clemens Jauch
    • Peter Kloft

• Zuordnung von Sonderausgaben in der Rentenphase als Bestimmungsfaktor für das Vorliegen einer Doppelbesteuerung beim Übergang zur nachgelagerten Besteuerung gesetzlicher Renten

  Chirvi, M. ., Kiesewetter, D. ., Maiterth, R. ., Menzel, M. ., & Tschinkl, D. . (2020). Zuordnung von Sonderausgaben in der Rentenphase als Bestimmungsfaktor für das Vorliegen einer Doppelbesteuerung beim Übergang zur nachgelagerten Besteuerung gesetzlicher Renten. Steuer Und Wirtschaft, 97(3). http://doi.org/https://doi.org/10.9785/stuw-2020-970307

  Abstract

  anzeigen ▸

  Die seit langem kontrovers diskutierte Frage, ob es beim Übergang zur nachgelagerten Rentenbesteuerung zu einer unzulässige Doppelbesteuerung kommt, lässt sich klar beantworten. Wenn die Sonderausgaben, die in der Rentenphase aus den Beiträgen zur gesetzlichen Kranken- und Pflegeversicherung resultieren, als ein die Renten steuerfreistellendes Element des Steuersystems eingestuft werden, existiert kein Doppelbesteuerungsproblem. Vielmehr ist eine deutlich Minderbesteuerung und damit eine Steuervergünstigung für Rentner zu konstatieren. Gänzlich anders verhält es sich, wenn derartige Sonderausgaben nicht als Teil der steuerfreien Rente angesehen werden. Dann unterliegt die Mehrzahl der Rentner einer ungerechtfertigten Doppelbesteuerung. In beiden Fällen lässt sich eine pauschalierte und zudem passgenauere Besteuerung gesetzlicher Renten erreichen, indem § 22 EStG entsprechend modifiziert wird.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Chirvi, Malte

  Filter Tags

  • 2020
  • Journal Article
  • • Malte Chirvi
    • Dirk Kiesewetter
    • Ralf Maiterth
    • Moritz Menzel
    • Dominik Tschinkl

• Managing unreliability in automotive supply networks – an extension of the joint economic lot size model

  Gruchmann, T. ., & Brandenburg, M. . (2020). Managing unreliability in automotive supply networks – an extension of the joint economic lot size model. International Journal of Operational Research, 39(1). http://doi.org/10.1504/IJOR.2020.108838

  Abstract

  anzeigen ▸

  Within assembly network supply chains, supply disruptions can occur on every supplier-buyer link. Managing this network unreliability can help to reduce schedule instability and increases the overall efficiency of the supply chain accordingly. In this line, a stylised assembly network supply chain model is proposed with two suppliers and a single buyer using the joint economic lot sizing approach. This supply network can be disrupted by a shortage occurring at one of the two suppliers due to random machine breakdowns, which consequently creates dependent requirements variations affecting both the buyer and the entire network. First, the basic joint economic lot sizing model is extended by the said schedule instability. Second, a solution approach is presented concerning the determination of optimal lot sizes, the investment into the reliability of the supply network as well as the determination of safety stocks. Furthermore, the sensitivity of relevant model parameters is investigated by means of a numerical example. Managerial implications are accordingly derived focusing on the reliability of the supply network members and internal incentive structures.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Brandenburg, Marcus

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2020
  • Journal Article
  • • Tim Gruchmann
    • Marcus Brandenburg
  • • Schedule instability
    • Automotive supply networks
    • Joint economic lot sizing
    • Supply unreliability
    • Safety stocks

• Preferences for Wealth Taxation - Design, Framing and the Role of Partisanship

  Chirvi, M. ., & Schneider, C. . (2020). Preferences for Wealth Taxation - Design, Framing and the Role of Partisanship. arqus Discussion Paper.

  Abstract

  anzeigen ▸

  Empirical literature on preferences for wealth taxation almost exclusively focuses on either the emotionally loaded estate tax or rather general concepts of redistributive preferences. Yet, it remains unclear whether the exceptional opposition towards the estate tax is applicable to other instruments of net wealth taxation. This study presents, to our knowledge, the first investigation of how individuals want to tax wealth-across a variety of tangible wealth tax instruments. In doing so, we particularly test for the presence of framing effects, incidence concentration and the role of wealth characteristics within the different tax configurations. For this, we conducted a factorial vignette survey experiment with over 3,200 respondents on Amazon's Mechanical Turk (MTurk). Each respondent was randomized into one of four burden-equivalent wealth tax instruments: an estate tax, a one-time wealth tax, a decennial wealth tax or a yearly wealth tax. Subsequently we asked each respondent to state her preferred overall lifetime tax burden for a set of hypothetical individuals. Our findings yield several interesting insights. First, we find that the exceptional opposition towards the estate tax is not applicable to other instruments of wealth taxation and is only valid for certain subgroups. In general, our empirical findings provide preferred tax rates between 12.8 to 14.9 percent of overall lifetime tax burden. Second, we document an exceptional opposition towards the mere name "estate tax" in relation to equivalent wealth tax instruments for certain subgroups. Republicans particularly reject the estate tax with a lower proposed effective tax rate of around 3.1 percentage points compared to all other wealth taxes-even the perfectly congruent one-time wealth tax. Third, we uncover the influence of normative preferences for specific design features on the support for a wealth tax. Proposed effective tax rates of the estate tax and the one-time wealth tax show a significant progressivity, whereas no progressivity can be observed for both periodical taxes. The presence of children has an especially significant negative effect in one-off wealth taxes at the end of the lifetime.

  • Suche auf Google Scholar

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Chirvi, Malte

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2020
  • Unpublished
  • • Malte Chirvi
    • Cornelius Schneider

• An empirically evaluated checklist for surveys in software engineering

  eri, J. S. M., Petersen, K. ., & Mendes, E. . (2020). An empirically evaluated checklist for surveys in software engineering. Information and Software Technology, 119, 106240.

  • Suche auf Google Scholar

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Petersen, Kai

  • Abteilung/Einrichtung

    • FLAIR - Flensburg Artificial Intelligence Research

  Filter Tags

  • 2020
  • Journal Article
  • • Jefferson eri
    • Kai Petersen
    • Emilia Mendes

• Azure DevOps für Anfänger

  Cordts, S. ., & Nasutta, M. . (2020). Azure DevOps für Anfänger. mana-Buch Verlag.

  • Suche auf Google Scholar

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Abteilung/Einrichtung

    • FLAIR - Flensburg Artificial Intelligence Research

  • Fachbereich

    • Fachbereich 4: Wirtschaft

  Filter Tags

  • 2020
  • Book
  • • Sönke Cordts
    • Maren Nasutta

• Untersuchung von opensource Datenbanksystemen auf Härtungsmaßnahmen unter Betrachtung des BSI IT-Grundschutz-Kompendium

  Bendig, H. . (2020). Untersuchung von opensource Datenbanksystemen auf Härtungsmaßnahmen unter Betrachtung des BSI IT-Grundschutz-Kompendium. Wismar University of Applied Sciences. Abgerufen von https://it-forensik.fiw.hs-wismar.de/index.php/Henner_Bendig

  Abstract

  anzeigen ▸

  Die Relevanz von Opensource Software (OSS) steigt immer weiter an. Laut einer Studie der Bitkom setzen heutzutage 69% aller Unternehmen, bewusst OSS ein und bis zu 75% der Unternehmen planen OSS einzusetzen [1]. Gleichzeitig steigt die Gefahr von Angriffen auf moderne Technologien [2]. Datenbanksysteme (DBS) stehen heute schon auf Platz 4 der am häufigsten angegriffenen IT-Systeme [3]. Die Wichtigkeit von Daten im heutigen Zeitalter steigt noch immer weiter man, somit ist eine noch höhere Angriffswahrscheinlichkeit auf DBS wahrscheinlich. In dieser Arbeit wurde die Umsetzbarkeit des Bausteins „APP.4.3 – Relationale Datenbanken“ des IT-Grundschutzkompendium der Bundesagentur für Sicherheit in der Informationstechnik (BSI) in den Opensource DBS Oracle MySQL, PostgreSQL und MongoDB untersucht. Die drei gewählten Systeme sind die derzeit am meist verbreiteten Opensource Datenbanksysteme und bedürfen daher erhöhte Aufmerksamkeit [4] [5]. Organisatorische Maßnahmen wurden anhand von Empfehlungen, Vorgaben und Beispielen erarbeitet. Technische Maßnahmen wurden nach Möglichkeit direkt in den DBS umgesetzt. Sofern keine interne Umsetzung notwendig war, wurden Opensource Erweiterungen von Drittanbietern gesucht und getestet. Anhand der vom BSI bereitgestellten Auditorencheckliste wurden die Maßnahmen bewertet. Organisatorische Maßnahmen wurden aus der Wertung herausgenommen. Es wurden die Punktekategorien 0 für gar nicht umsetzbar, 1 für teilweise umsetzbar und 2 für komplett umsetzbar vergeben. MySQL erreichte 73% der möglichen Punkte, PostgreSQL 67% und MongoDB 47%. Ein Großteil der notwendigen Funktionen wird vom Originalhersteller zwar bereitgestellt aber ist nur in der kommerziell verfügbaren Variante der Systeme aktivierbar. Abstract: The relevance of Open Source Software (OSS) is constantly increasing. According to a study by Bitkom, 69% of all companies today use OSS consciously and up to 75% of companies plan to use OSS [1]. At the same time the danger of attacks on modern technologies is increasing [2]. Database systems (DBS) are already in 4th place among the most frequently attacked IT systems [3]. The importance of data in today s age is still increasing, so an even higher probability of attack on DBS is likely. In this thesis the feasibility of the module ‚APP.4.3 - Relational Databases‘ of the IT basic protection compendium of the German Federal Agency for Information Security (BSI) was examined in the open source DBS Oracle MySQL, PostgreSQL and MongoDB. The three chosen systems are currently the most widespread open source database systems and therefore require special attention [4] [5]. Organisational requirements were developed on the basis of recommendations, specifications and examples. Where possible, technical requirements were implemented directly in the DBS. As far as no internal implementation was possible, open source extensions of third-party providers were searched and tested. The requirements were evaluated using the auditor checklist provided by the BSI. Organizational requirements were removed from the evaluation. The point categories 0 for not realizable at all, 1 for partially realizable and 2 for completely realizable were assigned. MySQL achieved 73% of the possible points, PostgreSQL 67% and MongoDB 47%. Most of the required functions are provided by the original manufacturer but can only be activated in the commercially available version of the systems.

  • Suche auf Google Scholar

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Bendig, Henner

  • Forschungsfeld

    • IT-Security

  Filter Tags

  • 2020
  • Miscellaneous
  • • Henner Bendig

• A gender issue? - How touch-based interactions with dynamic spatial objects support performance and motivation of secondary school students

  Zander, S. ., Montag, M. ., Wetzel, S. ., & Bertel, S. . (2020). A gender issue? - How touch-based interactions with dynamic spatial objects support performance and motivation of secondary school students. Computers & Education, 143, 103677. http://doi.org/https://doi.org/10.1016/j.compedu.2019.103677

  Abstract

  anzeigen ▸

  Mobile devices are seen to incorporate characteristics which can support learning and problem solving in general and specific abilities, such as spatial ones (e.g. mental rotation). Central relevant characteristics of these devices are the availability of multiple representations (e.g. dynamic and static) and the direct interaction via touch, pointing and tracing with displayed information. The primary aim of the present study was to investigate the effectiveness of direct interactive, dynamic interactions with spatial tasks on mobile devices as compared to purely static, non-interactive versions of the same tasks. We expected that dynamic, interactive tasks support mental processes while solving spatial tasks would be especially helpful for learners with difficulties in mental rotation and low expectancies regarding their spatial abilities. Therefore, the second focus of the study was to examine whether the expected beneficial effects of dynamic interactions were equally beneficial for both genders. This was motivated by previous studies that revealed gender differences in performance and motivational beliefs regarding spatial tasks to the disadvantage of females. We used a mixed within-between subject design with presentation format (static vs. dynamic) and gender (female vs. male) as factors and success rate, mental effort, intrinsic motivation, and frustration as dependent variables. The study was conducted in four classes (7th grade, N = 46) in two secondary schools. To test gender related pre-assumptions, spatial abilities and motivation were assessed before solving the actual rotation tasks. A MANOVA with single-comparison follow-up tests revealed increased success rates and decreased mental effort for both genders in the dynamic condition, whereas beneficial effects for intrinsic motivation and frustration were restricted to female students. Process data for rotation behavior was registered for dynamic tasks: an analysis hinted at more exploratory ways of solving spatial tasks for females and at more goal-oriented approaches for male students.

  • Suche auf Google Scholar
  • DOI Verweis

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Bertel, Sven

  • Abteilung/Einrichtung

    • CIVU – Center for Interaction, Visualization and Usability

  • Fachbereich

    • Fachbereich 3: Information und Kommunikation

  Filter Tags

  • 2020
  • Journal Article
  • • Steffi Zander
    • Michael Montag
    • Stefanie Wetzel
    • Sven Bertel
  • • Touch interaction
    • Dynamic representations
    • Spatial abilities
    • Gender differences
    • Motivation

• Digitalisierung und Demenz

  Pornak, S. C., Gaede, H. ., & Lehr, B. . (2020). Digitalisierung und Demenz. Heilberufe, 72, 30–32.

  • Suche auf Google Scholar

  Exportformate

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

  Weiterführende Links

  anzeigen ▸

  • Personenseiten

    • Pornak, Shirin Caroline

  Filter Tags

  • 2020
  • Journal Article
  • • Shirin Pornak
    • Hannah Gaede
    • Bosco Lehr