@misc{Czarnecki2020, author = {Czarnecki, Christian}, title = {Buchbesprechung : Anwendungsorientierte Wirtschaftsinformatik - Strategische Planung, Entwicklung und Nutzung von Informationssystemen}, series = {Anwendungen und Konzepte der Wirtschaftsinformatik (AKWI-Journal)}, journal = {Anwendungen und Konzepte der Wirtschaftsinformatik (AKWI-Journal)}, publisher = {Technische Hochschule Wildau}, address = {Wildau}, issn = {2296-4592}, doi = {10.26034/lu.akwi.2020.3264}, pages = {101 -- 101}, year = {2020}, language = {de} } @incollection{Czarnecki2019, author = {Czarnecki, Christian}, title = {Robotergesteuerte Prozessautomatisierung}, series = {Enzyklop{\"a}die der Wirtschaftsinformatik}, booktitle = {Enzyklop{\"a}die der Wirtschaftsinformatik}, publisher = {Gito}, address = {Berlin}, pages = {1 -- 3}, year = {2019}, language = {de} } @incollection{Czarnecki2018, author = {Czarnecki, Christian}, title = {Establishment of a central process governance organization combined with operational process improvements : Insights from a BPM Project at a leading telecommunications operator in the Middle East}, series = {Business process management cases : digital innovation and business transformation in practice}, booktitle = {Business process management cases : digital innovation and business transformation in practice}, editor = {vom Brocke, Jan and Mendling, Jan}, publisher = {Springer}, address = {Cham}, isbn = {978-3-319-58306-8}, doi = {10.1007/978-3-319-58307-5}, pages = {57 -- 76}, year = {2018}, abstract = {Because of customer churn, strong competition, and operational inefficiencies, the telecommunications operator ME Telco (fictitious name due to confidentiality) launched a strategic transformation program that included a Business Process Management (BPM) project. Major problems were silo-oriented process management and missing cross-functional transparency. Process improvements were not consistently planned and aligned with corporate targets. Measurable inefficiencies were observed on an operational level, e.g., high lead times and reassignment rates of the incident management process.}, language = {en} } @article{Czarnecki2015, author = {Czarnecki, Christian}, title = {Moderne Telekommunikationsprodukte erfordern standardisierte Gesch{\"a}ftsprozesse}, series = {Wirtschaft und Wissenschaft}, journal = {Wirtschaft und Wissenschaft}, number = {2}, publisher = {Deutsche Telekom AG. Fachhochschule Leipzig}, address = {Leipzig}, pages = {7 -- 7}, year = {2015}, language = {de} } @incollection{CroonCzarnecki2021, author = {Croon, Philipp and Czarnecki, Christian}, title = {Liability for loss or damages caused by RPA}, series = {Robotic process automation : Management, technology, applications}, booktitle = {Robotic process automation : Management, technology, applications}, editor = {Czarnecki, Christian and Fettke, Peter}, publisher = {De Gruyter}, address = {Oldenbourg}, isbn = {9783110676778}, doi = {10.1515/9783110676693-202}, pages = {135 -- 151}, year = {2021}, abstract = {Intelligent autonomous software robots replacing human activities and performing administrative processes are reality in today's corporate world. This includes, for example, decisions about invoice payments, identification of customers for a marketing campaign, and answering customer complaints. What happens if such a software robot causes a damage? Due to the complete absence of human activities, the question is not trivial. It could even happen that no one is liable for a damage towards a third party, which could create an uncalculatable legal risk for business partners. Furthermore, the implementation and operation of those software robots involves various stakeholders, which result in the unsolvable endeavor of identifying the originator of a damage. Overall it is advisable to all involved parties to carefully consider the legal situation. This chapter discusses the liability of software robots from an interdisciplinary perspective. Based on different technical scenarios the legal aspects of liability are discussed.}, language = {en} } @inproceedings{CordesGligorevicBlicharski2019, author = {Cordes, Sven and Gligorevic, Snjezana and Blicharski, Peter}, title = {Analysis of sine precision influence on DOA estimation using the MUSIC algorithm}, series = {2019 20th International Radar Symposium (IRS)}, booktitle = {2019 20th International Radar Symposium (IRS)}, isbn = {978-3-7369-9860-5}, doi = {10.23919/IRS.2019.8768162}, pages = {1 -- 10}, year = {2019}, language = {en} } @article{CollPeralesSchulteTiggesRondinoneetal.2022, author = {Coll-Perales, Baldomero and Schulte-Tigges, Joschua and Rondinone, Michele and Gozalvez, Javier and Reke, Michael and Matheis, Dominik and Walter, Thomas}, title = {Prototyping and evaluation of infrastructure-assisted transition of control for cooperative automated vehicles}, series = {IEEE Transactions on Intelligent Transportation Systems}, volume = {23}, journal = {IEEE Transactions on Intelligent Transportation Systems}, number = {7}, publisher = {IEEE}, issn = {1524-9050 (Print)}, doi = {10.1109/TITS.2021.3061085}, pages = {6720 -- 6736}, year = {2022}, abstract = {Automated driving is now possible in diverse road and traffic conditions. However, there are still situations that automated vehicles cannot handle safely and efficiently. In this case, a Transition of Control (ToC) is necessary so that the driver takes control of the driving. Executing a ToC requires the driver to get full situation awareness of the driving environment. If the driver fails to get back the control in a limited time, a Minimum Risk Maneuver (MRM) is executed to bring the vehicle into a safe state (e.g., decelerating to full stop). The execution of ToCs requires some time and can cause traffic disruption and safety risks that increase if several vehicles execute ToCs/MRMs at similar times and in the same area. This study proposes to use novel C-ITS traffic management measures where the infrastructure exploits V2X communications to assist Connected and Automated Vehicles (CAVs) in the execution of ToCs. The infrastructure can suggest a spatial distribution of ToCs, and inform vehicles of the locations where they could execute a safe stop in case of MRM. This paper reports the first field operational tests that validate the feasibility and quantify the benefits of the proposed infrastructure-assisted ToC and MRM management. The paper also presents the CAV and roadside infrastructure prototypes implemented and used in the trials. The conducted field trials demonstrate that infrastructure-assisted traffic management solutions can reduce safety risks and traffic disruptions.}, language = {en} } @article{ClaessensFuchsbergerGuentheretal.2003, author = {Claessens, J. and Fuchsberger, A. and G{\"u}nther, C. and Horn, G. and Howker, K. and Hulsebosch, R.J. and Mitchell, C. and Paterson, K. and Preneel, B. and Schellekens, D. and Schuba, Marko}, title = {Pioneering Advanced Mobile Privacy and Security}, pages = {1 -- 17}, year = {2003}, language = {en} } @article{ClaerFerreinSchiffer2019, author = {Claer, Mario and Ferrein, Alexander and Schiffer, Stefan}, title = {Calibration of a Rotating or Revolving Platform with a LiDAR Sensor}, series = {Applied Sciences}, volume = {Volume 9}, journal = {Applied Sciences}, number = {issue 11, 2238}, publisher = {MDPI}, address = {Basel}, issn = {2076-3417}, doi = {10.3390/app9112238}, pages = {18 Seiten}, year = {2019}, language = {en} } @inproceedings{ChristianMontagSchubaetal.2018, author = {Christian, Esser and Montag, Tim and Schuba, Marko and Allhof, Manuel}, title = {Future critical infrastructure and security - cyberattacks on charging stations}, series = {31st International Electric Vehicle Symposium \& Exhibition and International Electric Vehicle Technology Conference (EVS31 \& EVTeC 2018)}, booktitle = {31st International Electric Vehicle Symposium \& Exhibition and International Electric Vehicle Technology Conference (EVS31 \& EVTeC 2018)}, publisher = {Society of Automotive Engineers of Japan (JSAE)}, address = {Tokyo}, isbn = {978-1-5108-9157-9}, pages = {665 -- 671}, year = {2018}, language = {en} } @inproceedings{ChircuCzarneckiFriedmannetal.2023, author = {Chircu, Alina and Czarnecki, Christian and Friedmann, Daniel and Pomaskow, Johanna and Sultanow, Eldar}, title = {Towards a Digital Twin of Society}, series = {Proceedings of the 56th Hawaii International Conference on System Sciences 2023}, booktitle = {Proceedings of the 56th Hawaii International Conference on System Sciences 2023}, publisher = {University of Hawai'i}, address = {Honolulu}, isbn = {978-0-9981331-6-4}, pages = {6748 -- 6757}, year = {2023}, abstract = {This paper describes the potential for developing a digital twin of society- a dynamic model that can be used to observe, analyze, and predict the evolution of various societal aspects. Such a digital twin can help governmental agencies and policy makers in interpreting trends, understanding challenges, and making decisions regarding investments or policies necessary to support societal development and ensure future prosperity. The paper reviews related work regarding the digital twin paradigm and its applications. The paper presents a motivating case study- an analysis of opportunities and challenges faced by the German federal employment agency, Bundesagentur f¨ur Arbeit (BA), proposes solutions using digital twins, and describes initial proofs of concept for such solutions.}, language = {en} } @article{ChenSchoembergKraffetal.2016, author = {Chen, Bixia and Schoemberg, Tobias and Kraff, Oliver and Dammann, Philipp and Bitz, Andreas and Schlamann, Marc and Quick, Harald H. and Ladd, Mark E. and Sure, Ulrich and Wrede, Karsten H.}, title = {Cranial fixation plates in cerebral magnetic resonance imaging: a 3 and 7 Tesla in vivo image quality study}, series = {Magnetic Resonance Materials in Physics, Biology and Medicine}, volume = {29}, journal = {Magnetic Resonance Materials in Physics, Biology and Medicine}, number = {3}, publisher = {Springer}, address = {Berlin}, issn = {1352-8661}, doi = {10.1007/s10334-016-0548-1}, pages = {389 -- 398}, year = {2016}, abstract = {Objective This study assesses and quantifies impairment of postoperative magnetic resonance imaging (MRI) at 7 Tesla (T) after implantation of titanium cranial fixation plates (CFPs) for neurosurgical bone flap fixation. Materials and methods The study group comprised five patients who were intra-individually examined with 3 and 7 T MRI preoperatively and postoperatively (within 72 h/3 months) after implantation of CFPs. Acquired sequences included T₁-weighted magnetization-prepared rapid-acquisition gradient-echo (MPRAGE), T₂-weighted turbo-spin-echo (TSE) imaging, and susceptibility-weighted imaging (SWI). Two experienced neurosurgeons and a neuroradiologist rated image quality and the presence of artifacts in consensus reading. Results Minor artifacts occurred around the CFPs in MPRAGE and T2 TSE at both field strengths, with no significant differences between 3 and 7 T. In SWI, artifacts were accentuated in the early postoperative scans at both field strengths due to intracranial air and hemorrhagic remnants. After resorption, the brain tissue directly adjacent to skull bone could still be assessed. Image quality after 3 months was equal to the preoperative examinations at 3 and 7 T. Conclusion Image quality after CFP implantation was not significantly impaired in 7 T MRI, and artifacts were comparable to those in 3 T MRI.}, language = {en} } @inproceedings{ChajanSchulteTiggesRekeetal.2021, author = {Chajan, Eduard and Schulte-Tigges, Joschua and Reke, Michael and Ferrein, Alexander and Matheis, Dominik and Walter, Thomas}, title = {GPU based model-predictive path control for self-driving vehicles}, series = {IEEE Intelligent Vehicles Symposium (IV)}, booktitle = {IEEE Intelligent Vehicles Symposium (IV)}, publisher = {IEEE}, isbn = {978-1-7281-5394-0}, doi = {10.1109/IV48863.2021.9575619}, pages = {1243 -- 1248}, year = {2021}, abstract = {One central challenge for self-driving cars is a proper path-planning. Once a trajectory has been found, the next challenge is to accurately and safely follow the precalculated path. The model-predictive controller (MPC) is a common approach for the lateral control of autonomous vehicles. The MPC uses a vehicle dynamics model to predict the future states of the vehicle for a given prediction horizon. However, in order to achieve real-time path control, the computational load is usually large, which leads to short prediction horizons. To deal with the computational load, the control algorithm can be parallelized on the graphics processing unit (GPU). In contrast to the widely used stochastic methods, in this paper we propose a deterministic approach based on grid search. Our approach focuses on systematically discovering the search area with different levels of granularity. To achieve this, we split the optimization algorithm into multiple iterations. The best sequence of each iteration is then used as an initial solution to the next iteration. The granularity increases, resulting in smooth and predictable steering angle sequences. We present a novel GPU-based algorithm and show its accuracy and realtime abilities with a number of real-world experiments.}, language = {en} } @inproceedings{BuxbaumSchwarteXuetal.1999, author = {Buxbaum, Bernd and Schwarte, Rudolf and Xu, Zhanping and Ringbeck, Thorsten and [u.a.],}, title = {Charge Transfer Simulation in PMD-Structures}, series = {Sensor 99 : proceedings / 9th Int'l Fair and Conference for Sensors, Transducers \& Systems, May 18 - 20, 1999, Exhibition Centre N{\"u}rnberg/Germany. - Vol. 2}, booktitle = {Sensor 99 : proceedings / 9th Int'l Fair and Conference for Sensors, Transducers \& Systems, May 18 - 20, 1999, Exhibition Centre N{\"u}rnberg/Germany. - Vol. 2}, publisher = {AMA Service GmbH}, address = {Wunsdorf}, pages = {427 -- 432}, year = {1999}, language = {en} } @inproceedings{BuxbaumSchwarteRingbecketal.1998, author = {Buxbaum, Bernd and Schwarte, Rudolf and Ringbeck, Thorsten and [u.a.],}, title = {A new approach in optical broadband communication systems : a high integrated optical phase locked loop based on a mixing and correlating sensor, the Photonic Mixer Device (PMD)}, series = {Proceedings / OPTO 98, Internationaler Kongress und Fachausstellung f{\"u}r Optische Sensorik, Messtechnik und Elektronik, 18. - 20. Mai 1998, Kongresszentrum Erfurt}, booktitle = {Proceedings / OPTO 98, Internationaler Kongress und Fachausstellung f{\"u}r Optische Sensorik, Messtechnik und Elektronik, 18. - 20. Mai 1998, Kongresszentrum Erfurt}, publisher = {ACS Organisations GmbH}, address = {Wunsdorf}, pages = {59 -- 64}, year = {1998}, language = {en} } @inproceedings{BuxbaumSchwarteRingbecketal.2000, author = {Buxbaum, Bernd and Schwarte, Rudolf and Ringbeck, Thorsten and [u.a.],}, title = {Pseudo-Noise Laserradar zur schnellen 3D-Aufnahme auf Basis der PMD-Smart-Pixel Technologie - Prinzip und experimentelle Verifikation}, series = {Bildverarbeitung im industriellen Einsatz : Tagung Stuttgart, 18. und 19. Oktober 2000 = Image processing and machine vision / VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik. - (VDI-Berichte ; 1572)}, booktitle = {Bildverarbeitung im industriellen Einsatz : Tagung Stuttgart, 18. und 19. Oktober 2000 = Image processing and machine vision / VDI/VDE-Gesellschaft Mess- und Automatisierungstechnik. - (VDI-Berichte ; 1572)}, publisher = {VDI-Verl.}, address = {D{\"u}sseldorf}, isbn = {3-18-091572-2}, issn = {0083-5560}, pages = {49 -- 59}, year = {2000}, language = {de} } @inproceedings{BuxbaumSchwarteRingbecketal.2001, author = {Buxbaum, Bernd and Schwarte, Rudolf and Ringbeck, Thorsten and [u.a.],}, title = {Wireless LAN based on optical CDMA using a new high-speed correlation receiver (MSM-PMD)}, series = {Optical wireless communications IV : 21-22 August, 2001, Denver, USA. - (SPIE proceedings series ; 4530)}, booktitle = {Optical wireless communications IV : 21-22 August, 2001, Denver, USA. - (SPIE proceedings series ; 4530)}, editor = {Korevaar, Eric John}, publisher = {SPIE}, address = {Bellingham, Wash.}, isbn = {0-8194-4254-2}, pages = {168 -- 178}, year = {2001}, language = {en} } @inproceedings{BuxbaumSchwarteRingbecketal.2002, author = {Buxbaum, Bernd and Schwarte, Rudolf and Ringbeck, Thorsten and [u.a.],}, title = {MSM-PMD as correlation receiver in a new 3D-ranging system}, series = {Laser radar ranging and atmospheric lidar techniques III : 17 - 18 September 2001, Toulouse, France. - (SPIE proceedings series ; 4546)}, booktitle = {Laser radar ranging and atmospheric lidar techniques III : 17 - 18 September 2001, Toulouse, France. - (SPIE proceedings series ; 4546)}, editor = {Schreiber, Ulrich}, publisher = {SPIE}, address = {Bellingham, Wash.}, isbn = {0-8194-4271-2}, issn = {0038-7355}, pages = {145 -- 154}, year = {2002}, language = {en} } @inproceedings{BuxbaumSchwarteRingbeck2000, author = {Buxbaum, Bernd and Schwarte, Rudolf and Ringbeck, Thorsten}, title = {Synchronization in spread spectrum laser radar systems based on PMD-DLL}, series = {Laser radar technology and applications V : 26 - 28 April 2000, Orlando, USA. - (SPIE proceedings series ; 4035)}, booktitle = {Laser radar technology and applications V : 26 - 28 April 2000, Orlando, USA. - (SPIE proceedings series ; 4035)}, editor = {Kamerman, Gary W.}, publisher = {SPIE}, address = {Bellingham, Wash.}, isbn = {0-8194-3661-5}, issn = {0038-7355}, pages = {204 -- 216}, year = {2000}, language = {en} } @inproceedings{BuxbaumSchwarteRingbeck1999, author = {Buxbaum, Bernd and Schwarte, Rudolf and Ringbeck, Thorsten}, title = {PMD-PLL: receiver structure for incoherent communication and ranging systems}, series = {Optical wireless communications II / [SPIE Conference on Optical Wireless Communications II], 22 September 1999, Boston, Massachusetts. - (SPIE proceedings series ; 3850)}, booktitle = {Optical wireless communications II / [SPIE Conference on Optical Wireless Communications II], 22 September 1999, Boston, Massachusetts. - (SPIE proceedings series ; 3850)}, editor = {Korevaar, Eric John}, publisher = {SPIE}, address = {Bellingham, Wash.}, isbn = {0-8194-3443-4}, issn = {0038-7355}, pages = {116 -- 130}, year = {1999}, language = {en} } @incollection{BuxbaumLangeRingbeck2009, author = {Buxbaum, Bernd and Lange, Robert and Ringbeck, Thorsten}, title = {3D-Imaging}, series = {Handbuch Fahrerassistenzsysteme : Grundlagen, Komponenten und Systeme f{\"u}r aktive Sicherheit und Komfort ; mit 45 Tabellen}, booktitle = {Handbuch Fahrerassistenzsysteme : Grundlagen, Komponenten und Systeme f{\"u}r aktive Sicherheit und Komfort ; mit 45 Tabellen}, editor = {Winner, Hermann}, edition = {1. Auflage}, publisher = {Vieweg + Teubner}, address = {Wiesbaden}, isbn = {978-3-8348-0287-3}, pages = {187 -- 197}, year = {2009}, language = {de} } @inproceedings{BuxbaumHessRingbeck2001, author = {Buxbaum, Bernd and Hess, Holger and Ringbeck, Thorsten}, title = {The photonic mixer device : new perspectives in optical wireless communication}, series = {International Workshop on Optical MEMS and Integrated Optics : Universit{\"a}t Dortmund, Universit{\"a}tskolleg Bommerholz, 11. \& 12. June 2001}, booktitle = {International Workshop on Optical MEMS and Integrated Optics : Universit{\"a}t Dortmund, Universit{\"a}tskolleg Bommerholz, 11. \& 12. June 2001}, editor = {Voges, Edgar}, publisher = {Univ.}, address = {Dortmund}, pages = {(12)1 -- (12)5}, year = {2001}, language = {en} } @article{BrueckSorgerGligorevicetal.2000, author = {Br{\"u}ck, Stefan and Sorger, Ulrich and Gligorevic, Snjezana and Stolte, Norbert}, title = {Interleaving for outer convolutional codes in DS-CDMA systems}, series = {IEEE transactions on communications}, volume = {Vol. 48}, journal = {IEEE transactions on communications}, number = {Iss. 7}, issn = {0090-6778}, pages = {1100 -- 1107}, year = {2000}, language = {en} } @inproceedings{BroennerHoefkenSchuba2016, author = {Broenner, Simon and H{\"o}fken, Hans-Wilhelm and Schuba, Marko}, title = {Streamlining extraction and analysis of android RAM images}, series = {Proceedings of the 2nd international conference on information systems security and privacy}, booktitle = {Proceedings of the 2nd international conference on information systems security and privacy}, organization = {ICISSP International Conference on Information Systems Security and Privacy <2, 2016, Rome, Italy>}, isbn = {978-989-758-167-0}, doi = {10.5220/0005652802550264}, pages = {255 -- 264}, year = {2016}, language = {en} } @inproceedings{BrockmannSultanowCzarnecki2019, author = {Brockmann, Carsten and Sultanow, Eldar and Czarnecki, Christian}, title = {Is enterprise architecture still relevant in the digital age?}, series = {GI Edition Proceedings Band 295 INFORMATIK 2019, Workshop-Beitr{\"a}ge}, booktitle = {GI Edition Proceedings Band 295 INFORMATIK 2019, Workshop-Beitr{\"a}ge}, editor = {Draude, Claude and Lange, Martin and Sick, Bernhard}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885796893}, issn = {1617-5468}, doi = {10.18420/inf2019_ws01}, pages = {21 -- 21}, year = {2019}, language = {en} } @inproceedings{BrockmannSultanowCzarnecki2018, author = {Brockmann, Carsten and Sultanow, Eldar and Czarnecki, Christian}, title = {Enterprise architectures between agility and traditional methodologies}, series = {GI Edition Proceedings Band 285 Workshops der INFORMATIK 2018}, booktitle = {GI Edition Proceedings Band 285 Workshops der INFORMATIK 2018}, editor = {Czarnecki, Christian and Brockmann, Carsten and Sultanow, Eldar and Koschmider, Agnes and Selzer, Annika and Gesellschaft f{\"u}r Informatik e. V.,}, publisher = {K{\"o}llen}, address = {Bonn}, isbn = {9783885796794}, issn = {1617-5468}, pages = {1 Seite}, year = {2018}, abstract = {For this year's workshop on Enterpirse Architecture in Research and Practice we have received eight submissions from which four have passed the rigorous peer-review. The acceptance quote of 50\% assures that only advancements in the field are included in our workshop.}, language = {en} } @inproceedings{BraunHoefkenSchubaetal.2015, author = {Braun, Sebastian and H{\"o}fken, Hans-Wilhelm and Schuba, Marko and Breuer, Michael}, title = {Forensische Sicherung von DSLRoutern}, series = {Proceedings of D-A-CH Security 2015. St. Augustin 8. und 9. September 2015}, booktitle = {Proceedings of D-A-CH Security 2015. St. Augustin 8. und 9. September 2015}, pages = {11 S.}, year = {2015}, language = {de} } @inproceedings{BrandesGligorevicSchnelletal.2007, author = {Brandes, Sinja and Gligorevic, Snjezana and Schnell, Michael and Rokitansky, Carl-Herbert and Ehammer, Max and Gr{\"a}upl, Thomas and Schlereth, Armin and Rihacek, Christoph}, title = {Final assessment of the B-VHF overlay concept}, series = {IEEE Aerospace Conference : 3-10 March 2007, Big Sky, Mont.}, booktitle = {IEEE Aerospace Conference : 3-10 March 2007, Big Sky, Mont.}, organization = {Institute of Electrical and Electronics Engineers}, isbn = {1-4244-0525-4}, pages = {1 -- 18}, year = {2007}, language = {en} } @inproceedings{BrandesEppleGligorevicetal.2009, author = {Brandes, Sinja and Epple, U. and Gligorevic, Snjezana and Schnell, Michael and Haindl, Bernhard and Sajatovic, Miodrag}, title = {Physical layer specification of the L-band Digital Aeronautical Communications System (L-DACS1)}, series = {Integrated Communications, Navigation and Surveillance Conference : ICNS '09 : 13 - 15 May 2009, Arlington, Va.}, booktitle = {Integrated Communications, Navigation and Surveillance Conference : ICNS '09 : 13 - 15 May 2009, Arlington, Va.}, organization = {Institute of Electrical and Electronics Engineers}, isbn = {978-1-4244-4733-6 ; 978-1-4244-4734-3}, pages = {1 -- 12}, year = {2009}, language = {en} } @article{BragardvanHoekDeDoncker2012, author = {Bragard, Michael and van Hoek, H. and De Doncker, R. W.}, title = {A major design step in IETO concept realization that allows overcurrent protection and pushes limits of switching performance}, series = {IEEE transactions on power electronics}, volume = {27}, journal = {IEEE transactions on power electronics}, number = {9}, publisher = {IEEE}, address = {New York}, issn = {0885-8993}, doi = {10.1109/TPEL.2012.2189136}, pages = {4163 -- 4171}, year = {2012}, abstract = {This paper presents the latest prototype of the integrated emitter turn-off thyristor concept, which potentially ranks among thyristor high-power devices like the gate turn-off thyristor and the integrated gate-commutated thyristor (IGCT). Due to modifications of the external driver stage and mechanical press-pack design optimization, this prototype allows for full device characterization. The turn-off capability was increased to 1600 A with an active silicon area of 823mm2 . This leads to a transient peak power of 672.1kW/cm² . Within this paper, measurements and concept assessment are presented and a comparison to state-of-the-art IGCT devices is provided.}, language = {en} } @inproceedings{BragardSubeSchneideretal.2019, author = {Bragard, Michael and Sube, Maike and Schneider, Maike and Jungemann, Christoph}, title = {Introducing a Cross-University Bachelor's Programme with Orientation Semester - Enabling a Permeable Academic Education System}, series = {2019 20th International Conference on Research and Education in Mechatronics (REM)}, booktitle = {2019 20th International Conference on Research and Education in Mechatronics (REM)}, isbn = {978-1-5386-9257-8}, doi = {10.1109/REM.2019.8744132}, pages = {1 -- 6}, year = {2019}, language = {en} } @article{BragardSoltauThomasetal.2010, author = {Bragard, Michael and Soltau, N. and Thomas, S. and De Doncker, R. W.}, title = {The balance of renewable sources and user demands in grids : power electronics for modular battery energy storage systems}, series = {IEEE transactions on power electronics}, volume = {25}, journal = {IEEE transactions on power electronics}, number = {12}, publisher = {IEEE}, address = {New York}, issn = {0885-8993}, doi = {10.1109/TPEL.2010.2085455}, pages = {3049 -- 3056}, year = {2010}, abstract = {The continuously growing amount of renewable sources starts compromising the stability of electrical grids. Contradictory to fossil fuel power plants, energy production of wind and photovoltaic (PV) energy is fluctuating. Although predictions have significantly improved, an outage of multi-MW offshore wind farms poses a challenging problem. One solution could be the integration of storage systems in the grid. After a short overview, this paper focuses on two exemplary battery storage systems, including the required power electronics. The grid integration, as well as the optimal usage of volatile energy reserves, is presented for a 5- kW PV system for home application, as well as for a 100- MW medium-voltage system, intended for wind farm usage. The efficiency and cost of topologies are investigated as a key parameter for large-scale integration of renewable power at medium- and low-voltage.}, language = {en} } @inproceedings{BragardSoltauDeDonckeretal.2010, author = {Bragard, Michael and Soltau, N. and De Doncker, R. W. and Schmiegel, A.}, title = {Design and implementation of a 5 kW photovoltaic system with li-ion battery and additional DC-DC converter}, series = {2010 IEEE Energy Conversion Congress and Exposition (ECCE 2010) : Atlanta, Georgia, USA, 12 - 16 September 2010 / [sponsored by the IEEE Power Electronics and Industry Applications Societies]}, booktitle = {2010 IEEE Energy Conversion Congress and Exposition (ECCE 2010) : Atlanta, Georgia, USA, 12 - 16 September 2010 / [sponsored by the IEEE Power Electronics and Industry Applications Societies]}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4244-5286-6 (Print)}, doi = {10.1109/ECCE.2010.5618220}, pages = {2944 -- 2949}, year = {2010}, language = {en} } @inproceedings{BragardRongeDeDoncker2011, author = {Bragard, Michael and Ronge, C. and De Doncker, R. W.}, title = {Sandwich design of high-power thyristor based devices with integrated MOSFET structure}, series = {Proceedings of the 2011 - 14th - European Conference on Power Electronics and Applications (EPE 2011) : Aug. 30, 2011 - Sept. 1, 2011, Birmingham, United Kingdom}, booktitle = {Proceedings of the 2011 - 14th - European Conference on Power Electronics and Applications (EPE 2011) : Aug. 30, 2011 - Sept. 1, 2011, Birmingham, United Kingdom}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-61284-167-0 (Print)}, year = {2011}, language = {en} } @article{BragardRichter2008, author = {Bragard, Michael and Richter, S. A.}, title = {LED-Kreisel als Praxis-Booster}, series = {Elektor : electronics worldwide}, volume = {39}, journal = {Elektor : electronics worldwide}, number = {12}, issn = {0932-5468}, pages = {16}, year = {2008}, language = {de} } @inproceedings{BragardKoellenspergerDeDoncker2007, author = {Bragard, Michael and K{\"o}llensperger, P. and De Doncker, R. W.}, title = {Der Internally Commutated Thyristor (ICT) : ein neuartiger GCT mit integrierter Ausschalteinheit}, series = {"Nowoczesne urządzenia zasilające w energetyce" : X międzynarodowa konferencja naukowo techniczna, Zakopane, 14-16 marca 2007 r. : materiały konferencyjne}, booktitle = {"Nowoczesne urządzenia zasilające w energetyce" : X międzynarodowa konferencja naukowo techniczna, Zakopane, 14-16 marca 2007 r. : materiały konferencyjne}, editor = {Dmowski, Antoni}, publisher = {APS Energia}, address = {Warszawa}, isbn = {83-918709-7-9}, pages = {7.1 -- 7.9}, year = {2007}, language = {de} } @misc{BragardHueningKowalewski2023, author = {Bragard, Michael and H{\"u}ning, Felix and Kowalewski, Paul}, title = {Vorrichtung zur Relativlagenbestimmung [Offenlegungschrift]}, year = {2023}, abstract = {Die Erfindung betrifft eine Vorrichtung zur Bestimmung einer Relativlage zwischen einem feststehenden Teil und einem zu demselben in eine Bewegungsrichtung bewegbaren beweglichen Teil, wobei der feststehende Teil mit einem Wiegandsensor versehen ist, wobei der Wiegandsensor zwischen zwei gegenpolig zueinander ausgebildeten Permanentmagneten angeordnet ist und dass der bewegliche Teil eine Mehrzahl von beabstandet zueinander angeordneten Magnetisierungsstegen aus einem magnetisch leitenden Material aufweist, die in der Bewegungsrichtung zumindest eine gleich große Erstreckung aufweisen wie der Permanentmagnet, dass ein Abstand zwischen benachbarten Magnetisierungsstegen derart gew{\"a}hlt ist, dass in einer ersten Relativlage ein erster Permanentmagnet von einem der Magnetisierungsstege {\"u}berdeckt ist und ein zweiter Permanentmagnet nicht von einem der Magnetisierungsstege {\"u}berdeckt ist.}, language = {de} } @inproceedings{BragardHoekHoegenetal.2018, author = {Bragard, Michael and Hoek, Hauke van and Hoegen, Anne von and Doncker, Rik W. De}, title = {Motivation-based Learning: Teaching Fundamentals of Electrical Engineering with an LED Spinning Top}, series = {2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, booktitle = {2018 IEEE 59th International Scientific Conference on Power and Electrical Engineering of Riga Technical University (RTUCON)}, isbn = {978-1-5386-6903-7}, doi = {10.1109/RTUCON.2018.8659810}, pages = {1 -- 6}, year = {2018}, language = {en} } @inproceedings{BragardGottschlichDeDoncker2011, author = {Bragard, Michael and Gottschlich, J. and De Doncker, R. W.}, title = {Design and realization of a credit card size driver stage for high power thyristor based devices with integrated MOS structure}, series = {2011 IEEE 8th International Conference on Power Electronics and ECCE Asia (ICPE \& ECCE 2011) : Jeju, South Korea, 30 May 2011 - 3 June 2011 / [co-sponsored by the Korean Institute of Power Electronics ...]}, booktitle = {2011 IEEE 8th International Conference on Power Electronics and ECCE Asia (ICPE \& ECCE 2011) : Jeju, South Korea, 30 May 2011 - 3 June 2011 / [co-sponsored by the Korean Institute of Power Electronics ...]}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-61284-958-4 (Print)}, doi = {10.1109/ICPE.2011.5944661}, pages = {1182 -- 1189}, year = {2011}, language = {en} } @misc{BragardDeDonckerMuraetal.2011, author = {Bragard, Michael and De Doncker, R. W. and Mura, F and Dick, C.}, title = {Halbleiterbauelement und Verfahren zur Herstellung desselben [Offenlegungsschrift]}, publisher = {Deutsches Patent- und Markenamt / Europ{\"a}isches Patentamt / WIPO}, address = {M{\"u}nchen / Den Hague / Geneva}, pages = {10 S. / 23 S. : graph. Darst.}, year = {2011}, language = {de} } @article{BragardConradvanHoeketal.2011, author = {Bragard, Michael and Conrad, M. and van Hoek, H. and De Doncker, R. W.}, title = {The integrated emitter turn-off thyristor (IETO) : an innovative thyristor-based high power semiconductor device using MOS assisted turn-off}, series = {IEEE transactions on industry applications}, volume = {47}, journal = {IEEE transactions on industry applications}, number = {5}, publisher = {IEEE}, address = {New York}, issn = {0093-9994}, doi = {10.1109/TIA.2011.2161432}, pages = {2175 -- 2182}, year = {2011}, language = {en} } @inproceedings{BragardConradDeDoncker2010, author = {Bragard, Michael and Conrad, M. and De Doncker, R. W.}, title = {The integrated emitter turn-off thyristor (IETO) : an innovative thyristor based high power semiconductor device using MOS assisted turn-off}, series = {2010 IEEE Energy Conversion Congress and Exposition (ECCE 2010) : Atlanta, Georgia, USA, 12 - 16 September 2010 / [sponsored by the IEEE Power Electronics and Industry Applications Societies]}, booktitle = {2010 IEEE Energy Conversion Congress and Exposition (ECCE 2010) : Atlanta, Georgia, USA, 12 - 16 September 2010 / [sponsored by the IEEE Power Electronics and Industry Applications Societies]}, publisher = {IEEE}, address = {Piscataway, NJ}, isbn = {978-1-4244-5286-6 (Print)}, doi = {10.1109/ECCE.2010.5618410}, pages = {4551 -- 4557}, year = {2010}, language = {en} } @misc{BragardBuddeHenteetal.2008, author = {Bragard, Michael and Budde, W. O. and Hente, D. and Jacobs, J. H. A. M. and Waffenschmidt, E.}, title = {Lighting system : [patent of invention]}, publisher = {WIPO / United States Patent and Trademark Office}, address = {Geneva / Alexandria, VA}, pages = {32 S. : graph. Darst.}, year = {2008}, language = {en} } @article{BragardBragard2003, author = {Bragard, Michael and Bragard, G.}, title = {Erweiterungen f{\"u}r das CBL2-Messinterface von Texas-Instruments}, series = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.}, volume = {56}, journal = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.}, number = {2}, publisher = {Seeberger}, address = {Neuss}, issn = {0025-5866}, pages = {87 -- 88}, year = {2003}, abstract = {Das von Texas-Instruments (TI) vertriebene Interface CBL2 wird {\"u}ber einige TI-Grafik-Rechner (TI-92, TI-89 usw.) angesteuert. Wegen seiner Handlichkeit wird dieses System beim Unterricht in wechselnden R{\"a}umen »großen« Messwerterfassungssystemen oft vorgezogen. Das CBL2 bietet drei analoge Eing{\"a}nge, die immerhin mit 10 Bit Aufl{\"o}sung und bis zu einer Frequenz von 50 kHz arbeiten. Weiterhin besitzt das CBL2 eine Buchse f{\"u}r angeblich nur einen digitalen Ein- bzw. Ausgang. An diesem Eingang wird standardm{\"a}ßig haupts{\"a}chlich der Bewegungssensor CBR betrieben. In diesem Beitrag werden Erweiterungsm{\"o}glichkeiten dieses Anschlusses beschrieben.}, language = {de} } @phdthesis{Bragard2012, author = {Bragard, Michael}, title = {The integrated emitter turn-off thyristor : an innovative MOS-gated high-power device. - (Aachener Beitr{\"a}ge des ISEA ; 62)}, publisher = {Shaker}, address = {Aachen}, isbn = {978-3-8440-1152-4}, pages = {III, 164 S. : Ill., graph. Darst.}, year = {2012}, abstract = {This thesis introduces the Integrated Emitter Turn-Off (IETO) Thyristor as a new high-power device. Known state-of-the-art research activities like the Dual GCT, the ETO thyristor and the ICT were presented and critically reviewed. A comparison with commercialized solutions identifies the pros and cons of each type of device family. Based on this analysis, the IETO structure is proposed, covering most benefits of each device class. In particular the combination of a MOS-assisted turn-off with a thyristor-based device allows a voltage-controlled MOS switching and the low on-state voltage of the thyristors. The following synthesis of an IETO device stands on a three-dimensional field of optimization spanned by electric, mechanical and thermal aspects. From an electric point of view, the lowest possible parasitic inductance and resistance within the commutation path are optimization criteria. The mechanical construction has to withstand the required contact pressure of multiple kilo Newtons. Finally, thermal borders limit the maximum average current of the device. FEM simulations covering these three aspects are performed for several design proposals. An IETO prototype is constructed and measurements on various test benches attest thermal, mechanical and electric performance. A local decoupling of the external driver stage and the presspack housing is presented by a cable connection. This separation enables a thermal and mechanical independence, which is advantageous in terms of vibrations and thermal cycles including increased reliability. The electric pulse performance of the prototype device is a factor of 3.1 above today''s solutions. In single-pulse measurements, a current up to 1600 A was successfully turned off at 115°C with an active silicon area of 823 mm². One reason for this increased turn-off capability is the extremely low-inductive construction. Additional functionality of the IETO thyristor like over-current self-protection and defined short-circuit failure state are successfully verified.}, language = {en} } @article{BragardBragard2012, author = {Bragard, G. and Bragard, Michael}, title = {Ein kosteng{\"u}nstiges, universelles Modellbauinterface}, series = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.}, volume = {65}, journal = {Der mathematische und naturwissenschaftliche Unterricht : MNU ; Organ des Deutschen Vereins zur F{\"o}rderung des Mathematischen und Naturwissenschaftlichen Unterrichts e.V.}, number = {5}, publisher = {Seeberger}, address = {Neuss}, issn = {0025-5866}, pages = {290 -- 293}, year = {2012}, abstract = {Wir stellen einen USB-Baustein vor, der eine kosteng{\"u}nstige und universelle M{\"o}glichkeit schafft , im Unterricht den Themenkreis Messen-Steuern-Regeln zu behandeln. Die Funktionalit{\"a}t orientiert sich am CVK-Interface der Firma Fischertechnik. Im Gegensatz zu kommerziellen L{\"o}sungen erlaubt unser Aufbau auch den preiswerten Einsatz in Gruppen- oder Einzelarbeit. Abschließend berichten wir {\"u}ber ein Beispiel aus dem Unterrichtseinsatz.}, language = {de} } @article{BooysenRiegerFerrein2011, author = {Booysen, Tracy and Rieger, Michael and Ferrein, Alexander}, title = {Towards inexpensive robots for science \& technology teaching and education in Africa}, publisher = {IEEE}, address = {New York}, isbn = {978-1-61284-992-8}, pages = {1 -- 6}, year = {2011}, language = {en} } @inproceedings{BooysenMathewKnoxetal.2015, author = {Booysen, Tracy and Mathew, Thomas and Knox, Greig and Fong, W. K. and St{\"u}ttgen, Marcel and Ferrein, Alexander and Steinbauer, Gerald}, title = {The Scarab Project}, series = {ICRA 2015 Developing Countries Forum}, booktitle = {ICRA 2015 Developing Countries Forum}, pages = {3 S.}, year = {2015}, abstract = {Urban Search and Rescue (USAR) is an active research field in the robotics community. Despite recent advances for many open research questions, these kind of systems are not widely used in real rescue missions. One reason is that such systems are complex and not (yet) very reliable; another is that one has to be an robotic expert to run such a system. Moreover, available rescue robots are very expensive and the benefits of using them are still limited. In this paper, we present the Scarab robot, an alternative design for a USAR robot. The robot is light weight, humanpackable and its primary purpose is that of extending the rescuer's capability to sense the disaster site. The idea is that a responder throws the robot to a certain spot. The robot survives the impact with the ground and relays sensor data such as camera images or thermal images to the responder's hand-held control unit from which the robot can be remotely controlled.}, language = {en} } @inproceedings{BonneyNagelSchuba2016, author = {Bonney, Gregor and Nagel, Stefan and Schuba, Marko}, title = {Risiko Smart Home - Angriff auf ein Babymonitorsystem}, series = {Proceedings of DACH Security 2016, Klagenfurt, Austria, September 2016}, booktitle = {Proceedings of DACH Security 2016, Klagenfurt, Austria, September 2016}, editor = {Schartner, P.}, pages = {371 -- 378}, year = {2016}, abstract = {Unser Zuhause wird zunehmend intelligenter. Smart Homes bieten uns die Steuerung von Haus- oder Unterhaltungstechnik bequem vom Smartphone aus. Junge Familien nutzen die Technologie, um mittels vernetzten Babymonitorsystemen ihren Nachwuchs von {\"u}berall aus im Blick zu haben. Davon auszugehen, dass solche Systeme mit einem Fokus auf Sicherheit entwickelt wurden, um die sehr pers{\"o}nlichen Daten zu sch{\"u}tzen, ist jedoch ein Trugschluss. Die Untersuchung eines handels{\"u}blichen und keineswegs billigen Systems zeigt, dass die Ger{\"a}te sehr einfach kompromittiert und missbraucht werden k{\"o}nnen.}, language = {de} } @inproceedings{BonneyHoefkenPaffenetal.2015, author = {Bonney, Gregor and H{\"o}fken, Hans-Wilhelm and Paffen, Benedikt and Schuba, Marko}, title = {ICS/SCADA Security - Analysis of a Beckhoff CX5020 PLC}, series = {1st International Conference on Information Systems Security and Privacy : ICISSP 2015}, booktitle = {1st International Conference on Information Systems Security and Privacy : ICISSP 2015}, organization = {International Conference on Information Systems Security and Privacy <1, 2015, Angers>}, pages = {1 -- 6}, year = {2015}, language = {en} }