TY - GEN A1 - Dinkel, Michael A1 - Heinz, Paul A1 - Pyczak, Florian A1 - Volek, Andreas A1 - Ott, Michael A1 - Affeldt, Ernst A1 - Vossberg, Andreas A1 - Göken, Mathias A1 - Singer, Robert F. ED - Reed, Roger C. ED - Green, Kenneth A. ED - Caron, Pierre ED - Gabb, Timothy P. ED - Fahrmann, Michael G. ED - Huron, Eric S. ED - Woodard, Shiela R. T1 - New Boron and Silicon Free Single Crystal-Diffusion Brazing Alloys T2 - Superalloys 2008, proceedings of the Eleventh International Symposium on Superalloys, held September 14 - 18, 2008, Pennsylvania, USA Y1 - 2008 SN - 978-0-87339-728-5 SP - 211 EP - 220 PB - TMS CY - Warrendale, Pa. ER - TY - CHAP A1 - Heinz, Paul A1 - Volek, Andreas A1 - Singer, Robert F. A1 - Dinkel, Michael A1 - Pyczak, Florian A1 - Göken, Mathias A1 - Ott, Michael A1 - Affeldt, Ernst A1 - Vossberg, Andreas ED - Öchsner, Andreas ED - Murch, Graeme E. T1 - Diffusion brazing of single crystalline nickel base superalloys using boron free nickel base braze alloys T2 - Diffusion in Solids and Liquids III, 3rd International Conference on Diffusion in Solids and Liquids, Liege Konferenz Y1 - 2008 SN - 978-3-908451-51-8 SP - 294 EP - 299 PB - Trans Tech Publ. CY - Stafa-Zurich [u.a.] ER - TY - CHAP A1 - Dinkel, Michael A1 - Pyczak, Florian A1 - Göken, Mathias A1 - Heinz, Paul A1 - Volek, Andreas A1 - Singer, Robert F. A1 - Ott, Michael A1 - Affeldt, Ernst A1 - Vossberg, Andreas ED - Lecomte-Beckers, Jacqueline ED - Carton, M. ED - Schubert, F. ED - Ennis, P. J. T1 - Nanoindentation and Orientation Measurements in Single Crystalline Brazing Joints of Nickel-Base Superalloys T2 - Materials for advanced power engineering 2006, proceedings of the 8th Liege Conference, Bd. 2 Y1 - 2006 SN - 3-89336-436-6 SP - 633 EP - 642 PB - Forschungszentrum CY - Jülich ER - TY - GEN A1 - Bolz, Sebastian A1 - Oehring, Michael A1 - Lindemann, Janny A1 - Pyczak, Florian A1 - Paul, Jonathan A1 - Stark, Andreas A1 - Lippmann, Thomas A1 - Roth-Fagaraseanu, Dan A1 - Schreyer, Andreas A1 - Weiß, Sabine A1 - Schrüfer, Susanne T1 - Microstructure and mechanical properties of a forged beta-solidifying gamma TiAl alloy in different heat treatment conditions T2 - Intermetallics Y1 - 2015 VL - 2015 IS - 58 SP - 71 EP - 83 ER - TY - GEN A1 - Oehring, Michael A1 - Lindemann, Janny A1 - Pyczak, Florian A1 - Paul, Jonathan A1 - Stark, Andreas A1 - Lippmann, Thomas A1 - Schrüfer, Susanne A1 - Roth-Fagaraseanu, Dan A1 - Schreyer, Andreas A1 - Weiß, Sabine T1 - Microstructure and mechanical properties of a forged β-solidifying γ TiAl alloy in different heat treatment conditions T2 - Intermetallics N2 - In the cast condition g titanium aluminide alloys that solidify completely through the b phase are characterized by fine and homogeneous microstructures, weak textures and low segregation. For these reasons such alloys have a relatively good workability and can be closed-die forged without preceding ingot breakdown even if the alloys contain no large fractions of the b phase at the working temperature. The present work was devoted to a combined study of the constitution and microstructural morphologies that develop in various two-step heat treatments of a single-step forged b solidifying alloy. The study included high-energy X-ray diffraction for in situ investigations of the constitution at the heat treatment temperature. It was observed that the phase ransformations are quite sluggish in the material which results in fine microstructures and some conditions that significantly deviate from thermodynamic equilibrium. Further, tensile and creep testing was carried out on the different material conditions in order to identify the range in which the properties can be varied. It is found that this easily forgeable material exhibits comparable strength, ductility and creep strength as more conventional peritectically solidifying alloys. KW - TiAl KW - Titanium Aluminides KW - hot die forging KW - TNB-V4 Y1 - 2015 UR - http://www.sciencedirect.com/science/article/pii/S096697951400301X U6 - https://doi.org/10.1016/j.intermet.2014.11.008 SN - 0966-9795 VL - 2015 IS - 58 SP - 71 EP - 83 ER - TY - GEN A1 - Liang, Zhida A1 - Paul, Jonathan A1 - Stark, Andreas A1 - Bezold, Andreas A1 - Neumeier, Steffen A1 - Göken, Mathias A1 - Pyczak, Florian T1 - High-Temperature CoNi-Based Superalloys Strengthened by γ′-(Ni,Co)3(Cr,Al,Ti,X): The Effect of Refractory Elements T2 - Metallurgical and materials transactions. A, Physical metallurgy and materials science N2 - Recent research on Co-based and CoNi-based alloys revealed that the Co–Al–W-system provides interesting properties, however, the high content of W addition triggers high mass density of alloys which limits its industrial application. Therefore, new high temperature superalloys based on the Co–Ni–Al–Ti-system with high content Cr and strengthened by γ′-(Ni,Co)3(Cr,Al,Ti) precipitates, have been developed, and the effect of different refractory element additions was investigated. STEM-EDS and HEXRD were employed to determine the elemental partitioning behavior and the lattice misfit between the γ and γ′ phases. Ta and Nb strongly concentrate within the γ′ phase, whereas Mo weakly partitions to the γ phase. W distributes equally between the γ and γ′ phases. These new superalloys have an unexpectedly high positive misfit compared with some conventional Ni-based superalloys and Co-based superalloys. Nb and Ta additions increase the lattice misfit further, while Mo and W decrease the lattice misfit. The effect of refractory elements alloying on the yield stress at room temperature was evaluated by analyzing the contributions of different strengthening mechanisms. Alloying with Nb or Ta significantly improves precipitation strengthening by increasing the antiphase boundary energy. Mo has the highest solid solution strengthening effect in the γ phase, followed by W. Compared with some conventional Ni-based superalloys, the investigated new CoNi-based superalloys exhibited better mechanical properties at high temperature, which indicates that these compositionally complex alloys are possible candidates for high temperature applications. Y1 - 2022 U6 - https://doi.org/10.1007/s11661-022-06795-y SN - 1543-1940 VL - 54 (2023) IS - 5 SP - 1620 EP - 1634 ER - TY - GEN A1 - Kao, Ming-Chao A1 - Schewe, Lukas Paul A1 - Akhtar, Arub A1 - Rehm, Jana A1 - Bin Anooz, Saud Bin A1 - Galazka, Zbigniew A1 - Popp, Andreas A1 - Flege, Jan Ingo A1 - Vonk, Vedran A1 - Stierle, Andreas T1 - Structure and Stability of Al-alloyed β-Ga2O3(100) surfaces T2 - Verhandlungen der DPG, Berlin 2024 N2 - β-Ga2O3 (GaO) holds great promise in high-power applications. GaO is predicted to outperform the leading technologies based on SiC and GaN due to a three times higher calculated critical field strength. It has been identified that alloying with Al results in an almost linear increase in the bandgap between Ga2O3 (4.85eV) and Al2O3 (7eV). A critical issue in the bandgap engineering of GaO is maintaining reasonable electron mobility, which is low for the pure material (150cm2/V/S). This project aims to explore GaO by Al alloying, which allows tunable wide bandgaps for engineering material properties and at the same time maintains excellent crystal quality. PXRD and their Rietveld refinement on several AlGaO crystals indicate a preferential ordering of Al and Ga over octahedral and tetrahedral sites. The results of an SXRD study using synchrotron radiation addressing the surface structure of β-AlxGa2−xO3(100) substrates with x=0−0.25. Our results indicate that the GaO(100) surface is nearly bulk terminated and remains smooth up to 800°C and 10−5mbar of molecular oxygen. KW - high-power applications KW - bandgap engineering KW - crystal quality KW - X-ray diffraction Y1 - 2024 UR - https://www.dpg-verhandlungen.de/year/2024/conference/berlin/part/o/session/67/contribution/10 SN - 0420-0195 PB - Deutsche Physikalische Gesellschaft CY - Bad Honnef ER - TY - GEN A1 - Kao, Ming-Chao A1 - Schewe, Lukas Paul A1 - Akhtar, Arub A1 - Vlad, Alina A1 - Keller, Thomas F. A1 - Henkel, Karsten A1 - Anooz, Saud Bin A1 - Popp, Andreas A1 - Galazka, Zbigniew A1 - Flege, Jan Ingo A1 - Stierle, Andreas A1 - Vonk, Vedran T1 - Surface termination of β-Ga₂O₃(100) as-cleaved single crystals T2 - Applied physics letters N2 - The surface of β-Ga₂O₃ single crystals cleaved along their (100) plane is investigated using surface x-ray diffraction and atomic force microscopy. The results show the surface to consist of a single, so-called B-termination, which means that the crystal cleaves at planes formed by edge-sharing oxygen octahedra, thereby breaking the longest and weakest Ga–O bonds. Refinement of the atomic positions results in small displacements from the bulk structure, at most approximately 0.01 Å. Atomic force microscopy suggests that relatively large terraces form together with steps of half the a-axis length of approximately 0.6 nm, which means that terraces have the same atomic termination, related by the crystal symmetry. These results are important as a fundamental property of β-Ga₂O₃ when processed or used in various semiconductor applications. KW - X-ray KW - Gallium oxide Y1 - 2026 U6 - https://doi.org/10.1063/5.0309937 SN - 0003-6951 VL - 128 IS - 7 SP - 1 EP - 5 PB - AIP Publishing CY - Melville, NY ER - TY - GEN A1 - Ho, Paul S. A1 - Zschech, Ehrenfried A1 - Schmeißer, Dieter A1 - Meyer, Moritz Andreas A1 - Huebner, Rene A1 - Hauschildt, Meike A1 - Zhang, Lijuan A1 - Gall, Martin A1 - Kraatz, Matthias T1 - Scaling effects on microstructure and reliability for cu interconnects KW - scaling KW - microstructure KW - interconnects Y1 - 2010 ER - TY - GEN A1 - Mauß, Fabian A1 - Nakov, Galin A1 - Wenzel, Paul A1 - Steiner, Rüdiger A1 - Krüger, Christian A1 - Zhang, Yongzeh A1 - Rawat, Rajesh A1 - Borg, Andreas A1 - Perlman, Cathleen A1 - Fröjd, Karin A1 - Lehtiniemi, Harry T1 - Soot Simulation under Diesel Engine Conditions Using a Flamelet Approach T2 - SAE International Journal of Engines Y1 - 2010 SN - 1946-3936 VL - 2 IS - 2 SP - 89 EP - 104 ER - TY - CHAP A1 - Christl, Andreas A1 - Gorenz, Paul A1 - Herzog, Nicoleta A1 - Egbers, Christoph T1 - Eccentric Taylor-Couette Flow with orbital motion of the inner cylinder Y1 - 2011 ER - TY - CHAP A1 - Paul, Andreas ED - Stewin, Patrick ED - Mulliner, Collin T1 - Verwundbarkeitsanalyse des Industrial-Ethernet Protokolls Profinet IO T2 - Proceedings of the Seventh GI SIG SIDAR Graduate Workshop on Reactive Security (SPRING) Y1 - 2012 UR - http://www.sec.t-labs.tu-berlin.de/spring/Program.html N1 - Technical Report SR-2012-01 PB - GI FG SIDAR CY - Berlin ER - TY - CHAP A1 - Schuster, Franka A1 - Paul, Andreas A1 - König, Hartmut T1 - A Distributed Intrusion Detection System for Industrial Automation Networks T2 - Proceedings of the 17th International Conference on Emerging Technologies & Factory Automation, Krakau, Polen, September 2012 N2 - Modern automation is measured in terms of interoperability and easy administration. Introducing technology focussing on these criteria, however, induce new security risks to existing and future automation installations. Current security approaches in automation do not keep pace with the rising security challenges. Prevalent in automation is the use of access control to protect the system from malicious activity, such as extern attacks. Means to inspect the automation traffic to identify attacks that already have overcome access control or are initiated from inside the automation system are not available, yet. For filling this gap, we investigate in the application of intrusion detection techniques on industrial automation. In this paper, we present the current state of an intrusion detection system tailored to the analysis of operation down to traffic between automation devices on field layer. Y1 - 2012 SN - 978-1-4673-4736-5 U6 - https://doi.org/10.1109/ETFA.2012.6489703 SP - 1 EP - 4 PB - IEEE ER - TY - CHAP A1 - Paul, Andreas A1 - Schuster, Franka A1 - König, Hartmut T1 - Towards the Protection of Industrial Control Systems - Conclusions of a Vulnerability Analysis of Profinet IO T2 - Detection of Intrusions and Malware, and Vulnerability Assessment, 10th International Conference, DIMVA 2013, Berlin, Germany, July 18-19, 2013, proceedings Y1 - 2013 SN - 978-3-642-39234-4 SP - 160 EP - 176 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Schuster, Franka A1 - Paul, Andreas A1 - König, Hartmut T1 - Towards Learning Normality for Anomaly Detection in Industrial Control Networks T2 - Proceedings of the 7th IFIP WG 6.6 International Conference on Autonomous Infrastructure, Management, and Security (AIMS 2013), Barcelona, Spain, June 25-28, 2013 Y1 - 2013 SN - 978-3-642-38997-9 SP - 61 EP - 72 PB - Heidleberg CY - Berlin [u.a.] ER - TY - CHAP A1 - Nobis, Matthias A1 - Reinke, Peter A1 - Schmidt, Marcus A1 - Redlich, Marcel A1 - Egbers, Christoph A1 - Herzog, Nicoleta A1 - Gorenz, Paul A1 - Christl, Andreas T1 - Untersuchung der instationären Gleitlagerströmung T2 - 21. GALA-Tagung 2013, Lasermethoden in der Strömungsmesstechnik, 03. - 05. September 2013, München Y1 - 2013 SN - 978-3-9805613-9-6 SP - 51.1 EP - 51.10 PB - Dt. Gesellschaft für Laser-Anemometrie CY - Karlsruhe ER - TY - GEN A1 - Oehring, Michael A1 - Stark, Andreas A1 - Paul, Jonathan David Heaton A1 - Lippmann, Thomas A1 - Pyczak, Florian T1 - Microstructural refinement of boron-containing β-solidifying γ-titanium aluminide alloys through heat treatments in the β phase field T2 - Intermetallics Y1 - 2012 SN - 0966-9795 IS - 32 SP - 12 EP - 20 ER - TY - CHAP A1 - Gabrisch, Heike A1 - Lorenz, Uwe A1 - Oehring, Michael A1 - Paul, Jonathan A1 - Pyczak, Florian A1 - Rackel, Marcus W. A1 - Schimansky, Frank-Peter A1 - Stark, Andreas T1 - TiAlNb-alloy with a modulated B19 containing constituent produced by powder metallurgy T2 - Intermetallic-based alloys - science, technology and applications, symposium held November 25-30, Boston, Massachusetts, U.S.A Y1 - 2013 U6 - https://doi.org/10.1557/opl.2012.1575 SP - 35 EP - 40 PB - Cambridge Univ. Press CY - Cambridge ER - TY - CHAP A1 - Kleeberg, Andreas A1 - Rücker, Jacqueline A1 - Zippel, Paul T1 - Sedimentation und Zusammensetzung von partikulärem organischen Material im tiefen, eutrophen Scharmützelsee (Brandenburg) T2 - Deutsche Gesellschaft für Limnologie, Tagungsbericht 1997 (Frankfurt am Main) KW - shallow lakes Y1 - 1998 SN - 3-9805678-1-8 SP - 447 EP - 451 PB - Eigenverlag der DGL CY - Krefeld ER - TY - GEN A1 - Pyczak, Florian A1 - Bauer, Alexander A1 - Göken, Mathias A1 - Lorenz, Uwe A1 - Neumeier, Steffen A1 - Oehring, Michael A1 - Paul, Jonathan A1 - Schell, Norbert A1 - Schreyer, Andreas A1 - Symanzik, Felix T1 - The effect of tungsten content on the properties of L12-hardened Co-Al-W alloys T2 - Journal of Alloys and Compounds Y1 - 2015 SN - 0925-8388 IS - 632 SP - 110 EP - 115 ER - TY - CHAP A1 - Schuster, Franka A1 - Paul, Andreas A1 - Rietz, René A1 - König, Hartmut T1 - Potentials of Using One-class SVM for Detecting Protocol-specific Anomalies in Industrial Networks T2 - Proceedings of the 2015 IEEE Symposium on Computational Intelligence in Cyber Security (IEEE CICS 2015) Y1 - 2015 U6 - https://doi.org/10.1109/SSCI.2015.22 SP - 83 EP - 90 PB - IEEE Press CY - New York ER - TY - CHAP A1 - Paul, Andreas A1 - Schuster, Franka A1 - König, Hartmut T1 - Network Topology Exploration for Industrial Networks T2 - 2nd EAI International Conference on Industrial Networks and Intelligent Systems (INISCOM 2016), October 31 - November 1, 2016, Leicester, Great Britain Y1 - 2017 UR - http://www.springer.com/de/book/9783319525686 SN - 978-3-319-52568-6 U6 - https://doi.org/10.1007/978-3-319-52569-3 SP - 63 EP - 76 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Zaussinger, Florian A1 - Christl, Andreas A1 - Gorenz, Paul A1 - Neben, Matthias A1 - Egbers, Christoph T1 - An applied Couette-Taylor system as a simplified bearing model T2 - Book of abstracts, ICTW 19, 19th International Couette-Taylor Workshop, June 24-26, 2015 Cottbus, Germany Y1 - 2015 SP - 170 EP - 171 PB - BTU CY - Cottbus ER - TY - GEN A1 - Schuster, Franka A1 - Paul, Andreas A1 - König, Hartmut T1 - Messung der technischen IT-Sicherheit in Energieversorgungsanlagen zur Erfüllung des IT-Sicherheitsgesetzes T2 - International Journal for Electricy and Heat Generation, VGB Powertech Y1 - 2017 SN - 1435-3199 VL - 97 IS - 3 SP - 76 EP - 82 ER - TY - CHAP A1 - Schuster, Franka A1 - Kopp, Fabian Malte A1 - Paul, Andreas A1 - König, Hartmut T1 - Attack and Fault Detection in Process Control Communication Using Unsupervised Machine Learning T2 - IEEE 16th International Conference on Industrial Informatics (INDIN), Porto, Portugal, 18-20 July 2018 Y1 - 2018 SN - 978-1-5386-4829-2 U6 - https://doi.org/10.1109/INDIN.2018.8472054 SP - 433 EP - 438 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Schuster, Franka A1 - Paul, Andreas A1 - Kopp, Fabian Malte A1 - König, Hartmut T1 - Catching Intrusions: Classifier Performances for Detecting Network-specific Anomalies in Energy Systems T2 - 2018 International Conference on Smart Energy Systems and Technologies (SEST), Seville, Spain, September 2018 Y1 - 2018 SN - 978-1-5386-5326-5 U6 - https://doi.org/10.1109/SEST.2018.8495702 PB - IEEE CY - Piscataway, NJ ER - TY - GEN A1 - Kundel, Dominika A1 - Meyer, Svenja A1 - Birkhofer, Herbert A1 - Fliessbach, Andreas A1 - Mäder, Paul A1 - Scheu, Stefan A1 - Kleunen, Mark van A1 - Birkhofer, Klaus T1 - Design and Manual to Construct Rainout-Shelters for Climate Change Experiments in Agroecosystems T2 - Frontiers in Environmental Science N2 - Climate change models predict reduced summer precipitations for most European countries, including more frequent and extreme summer droughts. Rainout-shelters which intercept part of the natural precipitation provide an effective tool to investigate effects of different precipitation levels on biodiversity and ecosystem functioning. In this study, we evaluate and describe in detail a fixed-location rainout-shelter (2.5 × 2.5 m) with partial interception of natural rainfall. We provide a complete parts list, a construction manual and detailed CAD drawings allowing to rebuild and use these shelters for rainfall manipulation studies. In addition, we describe a rainout-shelter control treatment giving the possibility to quantify and account for potential shelter artifacts. To test the rainout-shelters, we established the following three treatments each in eight winter wheat plots of the agricultural long-term farming system comparison trial DOK in Therwil (Switzerland): (1) A rainout-shelter with 65% interception of rainfall, (2) a rainout-shelter control without interception of rainfall, and (3) an ambient control. The rainout-shelter effectively excluded 64.9% of the ambient rainfall, which is very close to the a priori calculated exclusion of 65.1%. In comparison to the ambient control plots, gravimetric soil moisture decreased under the rainout-shelter by a maximum of 11.1 percentage points. Air temperature under the rainout-shelter differed little from the ambient control (−0.55°C in 1.2 m height and +0.19°C in 0.1 m height), whereas soil temperatures were slightly higher in periods of high ambient temperature (+1.02°C), but remained basically unaffected in periods of low ambient temperature (+0.14°C). A maximum edge effect of 0.75 m defined a sampling area of 1 × 1 m under the rainout-shelter. The rainout-shelters presented here, proved to sustain under heavy weather and they were well-suited to be used in agricultural fields where management operations require the removal of the rainout-shelters for management operations. Overall, the results confirmed the good performance of the presented rainout-shelters regarding rainout-shelter artifacts, predictable rain exclusion, and feasibility for experimental studies in agricultural fields. KW - rainout-shelter design, summer drought, climate change, precipitation, wheat, CAD drawings Y1 - 2018 U6 - https://doi.org/10.3389/fenvs.2018.00014 SN - 2296-665X VL - 6 ER - TY - GEN A1 - Lazurenko, Daria V. A1 - Stark, Andreas A1 - Esikov, Maksim A. A1 - Paul, Jonathan A1 - Bataev, Ivan A. A1 - Kashimbetova, Adelya A. A1 - Mali, Vyacheslav I. A1 - Lorenz, Uwe A1 - Pyczak, Florian T1 - Ceramic-Reinforced γ-TiAl-Based Composites: Synthesis, Structure, and Properties T2 - Materials Y1 - 2019 U6 - https://doi.org/10.3390/ma12040629 SN - 1996-1944 VL - 12 IS - 4 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 - Werkzeuge und Veröffentlichungen 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. 85 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 - Implementierung und Umsetzung 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 - 122 EP - 124 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 - 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 -