TY - CHAP A1 - Schuster, Franka A1 - Paul, Andreas A1 - König, Hartmut ED - Rudel, Steffi ED - Lechner, Ulrike T1 - Anwendung des SICIA-Verfahrens in der Praxis – am Beispiel eines ISMS T2 - IT-Sicherheit für Kritische Infrastrukturen - State of the Art : Ergebnisse des Förderschwerpunkts IT-Sicherheit für Kritische Infrastrukturen ITS/KRITIS des BMBF Y1 - 2018 SN - 978-3-943207-33-0 SN - 978-3-943207-34-7 SP - 139 EP - 144 PB - Professur für Wirtschaftsinformatik, Universität der Bundeswehr München CY - Neubiberg ET - 1. Auflage ER - TY - GEN A1 - Schuster, Franka A1 - Paul, Andreas A1 - Mehner, Stefan A1 - König, Hartmut A1 - Kanisch, Heiko T1 - IT-Sicherheit im Kraftwerk - Methoden zur automatisierten Sicherheitsbewertung und Anomalieerkennung in hochsensiblen Netzen T2 - 51. Kraftwerkstechnisches Kolloquium, 21. - 23. Oktober 2019, Dresden N2 - Die zunehmende Digitalisierung auch in Kraftwerken erfordert entsprechend auf diesen Bereich zugeschnittene IT-Sicherheitsverfahren und -technologien. Aktuell stellt die obligatorische Implementierung eines angemessenen Sicherheitsprozesses, wie eines Informationssicherheitsmanagementsystems (ISMS), Betreiber von Erzeugungsanlagen, Energienetzen und anderen kritischen Infrastrukturen vor eine große Herausforderung, denn es gilt, zahlreiche Anforderungen bei der Implementierung zu erfüllen, ohne dass konkrete Methoden zur Umsetzung verfügbar sind. Gleichzeitig ist derEinsatz von IT-Sicherheitstechnologien aus der Bürowelt aufgrund gänzlich anderer Eigenschaften und Anforderungen industrieller Netze kaum möglich. Zur Adressierung dieser Problematik wurden von der Brandenburgischen Technischen Universität Cottbus-Senftenberg (BTU) und der Lausitz Energie Kraftwerke AG (LEAG) innovative Verfahren zur (1) systematischen Bewertung sowie (2) Verbesserung der IT-Sicherheit in hochsensiblen Netzen konzipiert und prototypisch implementiert, die ein diesem Beitrag mit den zugehörigen Forschungsprojekten vorgestellt werden. Um eine Beeinflussung empfindlicher Kraftwerksanlagen auszuschließen, wurde für alle Methoden ein nichtintrusiver Entwicklungsansatz verfolgt, der sich durch eine passive und vom jeweiligen industriellen Prozess vollständig entkoppelte Analyse auszeichnet und sich daher für einen breiten Einsatz in Netzen mit hohen Verfügbarkeitsanforderungen eignet. Y1 - 2019 UR - https://tu-dresden.de/ing/maschinenwesen/ifvu/evt/kraftwerkstechnisches-kolloquium/51-kraftwerkstechnisches-kolloquium-2019 SN - 978-3-934409-94-1 SN - 978-3-934409-93-4 SP - 680 EP - 703 PB - SAXONIA Standortentwicklungs- und -verwaltungsgesellschaft mbH CY - Freiberg ER - TY - CHAP A1 - Rieck, Konrad A1 - Wressnegger, Christian A1 - König, Hartmut A1 - Paul, Andreas A1 - Schuster, Franka A1 - Kanisch, Heiko A1 - Moder, Christoph ED - Rudel, Steffi ED - Lechner, Ulrike T1 - INDI – Intelligente Intrusion-Detection-Systeme für Industrienetze T2 - IT-Sicherheit für Kritische Infrastrukturen - State of the Art : Ergebnisse des Förderschwerpunkts IT-Sicherheit für Kritische Infrastrukturen ITS/KRITIS des BMBF Y1 - 2018 SN - 978-3-943207-33-0 SN - 978-3-943207-34-7 SP - S. 19 PB - Professur für Wirtschaftsinformatik, Universität der Bundeswehr München CY - Neubiberg ET - 1. Auflage ER - TY - CHAP A1 - Schuster, Franka A1 - Paul, Andreas A1 - König, Hartmut ED - Rudel, Steffi ED - Lechner, Ulrike T1 - SICIA – IT-Sicherheit in kritischen Netzen messen und systematisch verbessern T2 - IT-Sicherheit für Kritische Infrastrukturen - State of the Art : Ergebnisse des Förderschwerpunkts IT-Sicherheit für Kritische Infrastrukturen ITS/KRITIS des BMBF Y1 - 2018 SN - 978-3-943207-33-0 SN - 978-3-943207-34-7 SP - 27 EP - 28 PB - Professur für Wirtschaftsinformatik, Universität der Bundeswehr München CY - Neubiberg ET - 1. Auflage ER - TY - CHAP A1 - Rieck, Konrad A1 - Wressnegger, Christian A1 - König, Hartmut A1 - Paul, Andreas A1 - Schuster, Franka A1 - Kanisch, Heiko A1 - Moder, Christoph ED - Rudel, Steffi ED - Lechner, Ulrike T1 - Prozessnahe Kommunikation als besondere Herausforderung T2 - IT-Sicherheit für Kritische Infrastrukturen - State of the Art : Ergebnisse des Förderschwerpunkts IT-Sicherheit für Kritische Infrastrukturen ITS/KRITIS des BMBF Y1 - 2018 SN - 978-3-943207-33-0 SN - 978-3-943207-34-7 SP - S. 57 PB - Professur für Wirtschaftsinformatik, Universität der Bundeswehr München CY - Neubiberg ET - 1. Auflage ER - TY - GEN A1 - Kundel, Dominika A1 - Bodenhausen, Natacha A1 - Bracht Jørgensen, Helene A1 - Truu, Jaak A1 - Birkhofer, Klaus A1 - Hedlund, Katarina A1 - Mäder, Paul A1 - Fliessbach, Andreas T1 - Effects of simulated drought on biological soil quality, microbial diversity and yields under long-term conventional and organic agriculture T2 - FEMS Microbiology Ecology N2 - Drought and agricultural management influence soil microorganisms with unknown consequences for the functioning ofagroecosystems. We simulated drought periods in organic (biodynamic) and conventional wheat fields and monitoredeffects on soil water content, microorganisms and crops. Above the wilting point, water content and microbial respirationwere higher under biodynamic than conventional farming. Highest bacterial and fungal abundances were found inbiodynamically managed soils, and distinct microbial communities characterised the farming systems. Most biological soilquality parameters and crop yields were only marginally affected by the experimental drought, except for arbuscularmycorrhizal fungi (AMF), which increased in abundance under the experimental drought in both farming systems. AMFwere further strongly promoted by biodynamic farming resulting in almost three times higher AMF abundance underexperimental drought in the biodynamic compared with the conventional farming system. Our data suggest an improvedwater storage capacity under biodynamic farming and confirms positive effects of biodynamic farming on biological soilquality. The interactive effects of the farming system and drought may further be investigated under more substantialdroughts. Given the importance of AMF for the plant’s water supply, more in-depth studies on AMF may help to clarify theirrole for yields under conditions predicted by future climate scenarios. KW - microbial diversity KW - rainout shelter KW - PLFA KW - amplicon-based sequencing KW - DOK trial KW - soil organic carbon Y1 - 2020 U6 - https://doi.org/doi: 10.1093/femsec/fiaa205 SN - 1574-6941 VL - 96 IS - 12 ER - TY - GEN A1 - Li, Yuzhi A1 - Pyczak, Florian A1 - Stark, Andreas A1 - Wang, Li A1 - Oehring, Michael A1 - Paul, Jonathan A1 - Lorenz, Uwe T1 - Temperature dependence of misfit in different Co–Al–W ternary alloys measured by synchrotron X-ray diffraction T2 - Journal of Alloys and Compounds Y1 - 2020 SN - 0925-8388 VL - 819 ER - TY - GEN A1 - Lazurenko, Daria V. A1 - Laptev, Ilia S. A1 - Golkovsky, Mikhail G. A1 - Stark, Andreas A1 - Paul, Jonathan A1 - Bataev, Ivan A. A1 - Ruktuev, Alexey A. A1 - Song, Lin A1 - Gollwitzer, Christian A1 - Pyczak, Florian T1 - Influence of the Ti/Al/Nb ratio on the structure and properties on intermetallic layers obtained on titanium by non-vacuum electron beam cladding T2 - Materials Characterization Y1 - 2020 SN - 1044-5803 VL - 163 ER - TY - GEN A1 - Fröbel, Ulrich A1 - Stark, Andreas A1 - Paul, Jonathan A1 - Pyczak, Florian T1 - Assessment of the capability of Zr, Y, La, Gd, Dy, C, and Si to enhance the creep strength of gamma titanium aluminide alloys based on their effect on flow stress and thermal activation parameters T2 - Intermetallics Y1 - 2023 U6 - https://doi.org/10.1016/j.intermet.2023.108018 SN - 1879-0216 SN - 0966-9795 VL - Vol. 162 ER - TY - GEN A1 - Fünning, Tabea A1 - Paul, Martin A1 - Manganelli, Costanza Lucia A1 - Wenger, Christian A1 - Mai, Andreas A1 - Steglich, Patrick T1 - Comparative simulation analysis of photonic ultrasound sensors based on silicon waveguides T2 - Scientific reports N2 - Pressure sensors based on photonic integrated circuits (PIC) offer the prospect of outstanding sensitivities, extreme miniaturization and have the potential for highly scalable production using CMOS compatible processing. PIC-based pressure sensors detect the change in optical properties, i.e. the intensity or phase of the optical carrier wave inside miniaturized waveguide structures. The detection of ultrasound is achieved by engineering the waveguide architecture such that a pressure causes a high change in the effective refractive index of the waveguide. A range of PIC-based pressure sensors have been reported, but a comparison of the sensitivity of the different approaches is not straightforward, since different pressure sensitive waveguide architectures as well as photonic layouts and measurement setups impact the performance. Additionally, the used sensitivity unit is not uniform throughout the different studies, further complicating a comparison. In this work, a detailed simulation study is carried out by finite element modeling of different pressure sensitive waveguide architectures for a consistent comparison. We analyze three different sensor architectures: (A) a free standing membrane located within a tiny air gap above the waveguide, (B) a waveguide located on top of a deflectable membrane as well as (C) a waveguide embedded inside a pressure-sensitive polymer cladding. The mechanical response of the structures and the resulting changes in mode propagation, i.e. the change of the effective refractive index, are analyzed. The waveguide sensitivities in RIU/MPa for different waveguide types (strip, slot) and polarization states (TE, TM) are compared. The results reveal inherent limitations of the different waveguide designs and create a basis for the selection of suitable designs for further ultrasound sensor development. Possibilities for enhancing waveguide sensitivity are identified and discussed. Additionally, we have shown that the studied approaches are extensible to SiN waveguides. KW - Ultrasound sensor Y1 - 2025 U6 - https://doi.org/10.1038/s41598-025-01953-9 SN - 2045-2322 VL - 15 IS - 1 SP - 1 EP - 13 PB - Springer Science and Business Media LLC CY - [London] ER - TY - GEN A1 - Kalra, Amanpreet A1 - Alvarado Chavarin, Carlos A1 - Nitsch, Paul-Gregor A1 - Tschammer, Rudi A1 - Flege, Jan Ingo A1 - Ratzke, Markus A1 - Zoellner, Marvin Hartwig A1 - Schubert, Markus Andreas A1 - Wenger, Christian A1 - Fischer, Inga Anita T1 - Deposition of CeOₓ/SnOₓ-based thin films via RF magnetron sputtering for resistive gas sensing applications T2 - Physica B, Condensed matter N2 - Cerium oxide-tin oxide (CeOx/SnOx) thin films with varying Sn content were deposited using RF magnetron sputtering and investigated for hydrogen sensing applications. Structural, compositional, and morphological properties were characterized using X-ray diffraction (XRD), X-ray photoelectron spectroscopy (XPS), atomic force microscopy (AFM), transmission electron microscopy (TEM), and energy-dispersive X-ray spectroscopy (EDX). Gas sensing measurements showed effective hydrogen detection at room temperature, with the sensitivity strongly influenced by Sn content and oxygen vacancy concentration. Higher Sn concentration enhanced the sensing response, which was correlated with microstructural features obtained from AFM and EDX, as well as with the presence of Ce3+ and Ce4+ oxidation states identified by XPS. This study highlights the potential of CeOx/SnOx thin films for possible back-end-of-line integration and provides proof-of-principle for room-temperature hydrogen sensing. KW - RF magnetron sputtering KW - CeOx/SnOx thin film KW - Room temperature KW - Hydrogen sensing Y1 - 2026 U6 - https://doi.org/10.1016/j.physb.2025.418098 SN - 0921-4526 VL - 723 SP - 1 EP - 7 PB - Elsevier BV CY - Amsterdam ER -