TY - CHAP A1 - Grund, Raphael M. A1 - Altherr, Lena ED - Reiff-Stephan, Jörg ED - Jäkel, Jens ED - Schwarz, André T1 - Development of an open source energy disaggregation tool for the home automation platform Home Assistant T2 - Tagungsband AALE 2023 : mit Automatisierung gegen den Klimawandel N2 - In order to reduce energy consumption of homes, it is important to make transparent which devices consume how much energy. However, power consumption is often only monitored aggregated at the house energy meter. Disaggregating this power consumption into the contributions of individual devices can be achieved using Machine Learning. Our work aims at making state of the art disaggregation algorithms accessibe for users of the open source home automation platform Home Assistant. KW - Home Automation Platform KW - Home Assistant KW - Open Source KW - Machine Learning KW - Energy Disaggregation Y1 - 2023 SN - 978-3-910103-01-6 U6 - http://dx.doi.org/10.33968/2023.02 N1 - 19. AALE-Konferenz. Luxemburg, 08.03.-10.03.2023. BTS Connected Buildings & Cities Luxemburg (Tagungsband unter https://doi.org/10.33968/2023.01) SP - 11 EP - 20 PB - le-tex publishing services GmbH CY - Leipzig ER - TY - CHAP A1 - Hadinejad-Mahram, Hafez A1 - Gligorevic, Snjezana A1 - Ritscher, Matthias T1 - Joint iterative channel estimation and parallel interference cancellation for coded DS-CDMA T2 - Proceeding of the International Conference on Telecommunications 2002 : [Beijing, 23 - 26 June 2002]. Vol. 2 Y1 - 2002 SP - 566 EP - 570 ER - TY - CHAP A1 - Hagebeuker, Bianca A1 - Ringbeck, Thorsten A1 - Frydlewicz, Paul A1 - Jesorsky, Oliver A1 - Sünkel, Thomas ED - Grote, Caspar T1 - PMD-Sensoren als Schlüsselkomponenten für die mehrdimensionale Umfelderfassung des Fahrzeuginnenraums T2 - Begleittexte zum Entwicklerforum KFZ-Elektronik & FlexRay Solution Day : 15.Mai 2007, Ludwigsburg Y1 - 2007 N1 - Entwicklerforum Kfz-Elektronik <2007, Ludwigsburg> ; FlexRay Solution Day <2007, Ludwigsburg> SP - 287 EP - 296 PB - WEKA-Fachzeitschr.-Verl. CY - Poing ER - TY - CHAP A1 - Hartung, Frank A1 - Hillgärtner, Michael A1 - Schmitz, Günter A1 - Schuba, Marko A1 - Adolphs, Fabian A1 - Hoffend, Jens A1 - Theis, Jochen T1 - IT-Sicherheit im Automobil T2 - AmE 2014 : Automotive meets Electronics, Beiträge der 5. GMM-Fachtagung vom 18. bis 19. Februar 2014 in Dortmund. (GMM-Fachbericht ; 78) Y1 - 2014 SN - 978-3-8007-3580-8 SP - CD-ROM PB - VDE-Verl. CY - Berlin ER - TY - CHAP A1 - Harzheim, Thomas A1 - Heuermann, Holger T1 - Phase Repeatable Synthesizers as a New Harmonic Phase Standard for Nonlinear Network Analysis T2 - IEEE Transactions on Microwave Theory and Techniques Y1 - 2018 U6 - http://dx.doi.org/10.1109/TMTT.2018.2817513 SP - 1 EP - 8 PB - IEEE ER - TY - CHAP A1 - Harzheim, Thomas A1 - Heuermann, Holger A1 - Marso, Michel T1 - An Adaptive Biasing Method for SRD Comb Generators T2 - 2016 German Microwave Conference (GeMiC) Y1 - 2016 U6 - http://dx.doi.org/10.1109/GEMIC.2016.7461613 N1 - GeMiC 2016 ; March 14–16, 2016, Bochum, Germany SP - 289 EP - 292 PB - IEEE ER - TY - CHAP A1 - Heinol, Horst-Guenther A1 - Xu, Zhanping A1 - Schwarte, Rudolf A1 - Ringbeck, Thorsten ED - Deppe, Gerd-Joachim T1 - Experimentelle Ergebnisse eines neuartigen schnellen 3D-MeEsystems mit modifizierten elektrooptischen Modulationskomponenten T2 - Optische Formerfassung : Erfahrungsaustausch zwischen Anwendern und Entwicklern ; Manuskripte der Vorträge und Präsentationen zur DGZfP-VDI/VDE-GMA-Fachtagung am 28. und 29. April 1997 in der Stadthalle in Langen. - (GMA-Bericht ; 30) Y1 - 1997 SP - 99 EP - 103 PB - Gesellschaft Mess- und Automatisierungstechnik CY - Düsseldorf ER - TY - CHAP A1 - Hess, Holger A1 - Luan, Xuming A1 - Schwarte, Rudolf A1 - Zhang, Zhigang A1 - Xu, Zhanping A1 - Heinol, Horst-Guenther A1 - Buxbaum, Bernd A1 - Ringbeck, Thorsten ED - Fujisada, Hiroyuki T1 - Three-dimensional intelligent sensing based on the PMD technology T2 - Sensors, Systems, and Next-Generation Satellites V : 17 - 20 September 2001, Toulouse, France. - (SPIE proceedings series ; 4540) Y1 - 2001 SN - 0-8194-4265-8 SN - 0038-7355 SN - 0361-0748 SN - 0277-786X N1 - Sensors, systems, and next-generation satellites <5, 2001, Toulouse> SP - 482 EP - 488 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Heuermann, Holger A1 - Finger, Torsten T1 - 2.45 GHz Plasma Powered Spark Plug by Thermal and EM-Optimization Y1 - 2014 N1 - Ansys High Frequency Simulation Conference - AHFSC 2014, Munich; 02/2014 ER - TY - CHAP A1 - Heuermann, Holger A1 - Harzheim, Thomas A1 - Mühmel, Marc T1 - A maritime harmonic radar search and rescue system using passive and active tags T2 - 2020 17th European Radar Conference (EuRAD) KW - Harmonic Radar KW - Rescue System KW - Frequency Doubler KW - Transponder KW - Tag Y1 - 2021 SN - 978-2-87487-061-3 U6 - http://dx.doi.org/10.1109/EuRAD48048.2021.00030 N1 - Proceedings of the 17th European Radar Conference, 13th - 15th January 2021, Utrecht, Netherlands SP - 73 EP - 76 PB - IEEE ER - TY - CHAP A1 - Heuermann, Holger A1 - Sadeghfam, Arash T1 - Universaler Plasmajet für verschiedene Behandlungsschritte der Klebetechnik T2 - Tagungsband / 15. Kolloquium Gemeinsame Forschung in der Klebtechnik : 3. und 4. März 2015, Maternushaus, Köln / DECHEMA Y1 - 2015 SP - 85 EP - 87 CY - Köln ER - TY - CHAP A1 - Heuermann, Holger A1 - Sadeghfam, Arash T1 - Analog Amplitude-Locked Loop Circuit to Support RF Energy Solutions T2 - IEEE MTT-S International Microwave Symposium Digest Y1 - 2016 SN - 978-150900698-4 U6 - http://dx.doi.org/10.1109/MWSYM.2016.7540092 ER - TY - CHAP A1 - Heuermann, Holger A1 - Sadeghfam, Arash A1 - Finger, Torsten T1 - Alternative ignition system based on microwave plasma T2 - Advanced ignition systems for gasoline engines : [Vorträge der 1st International Conference Advanced Ignition Systems for Gasoline Engines - 1. Internationale Tagung Zündsysteme für Ottomotoren, 12.-13. November 2012, Berlin] Y1 - 2013 SN - 9783816931904 SP - 95 EP - 103 PB - Expert-Verl. CY - Renningen ER - TY - CHAP A1 - Hoegen, Anne von A1 - Doncker, Rik W. De A1 - Bragard, Michael A1 - Hoegen, Svenja von T1 - Problem-Based Learning in Automation Engineering: Performing a Remote Laboratory Session Serving Various Educational Attainments T2 - 2021 IEEE Global Engineering Education Conference (EDUCON) Y1 - 2021 U6 - http://dx.doi.org/10.1109/EDUCON46332.2021.9453925 SP - 1605 EP - 1614 ER - TY - CHAP A1 - Hoegen, Anne von A1 - Doncker, Rik W. De A1 - Rütters, René T1 - Teaching Digital Control of Operational Amplifier Processes with a LabVIEW Interface and Embedded Hardware T2 - The 23rd International Conference on Electrical Machines and Systems (ICEMS), Hamamatsu, Japan Y1 - 2020 U6 - http://dx.doi.org/10.23919/ICEMS50442.2020.9290928 SP - 1117 EP - 1122 ER - TY - CHAP A1 - Hofmann, Till A1 - Limpert, Nicolas A1 - Mataré, Viktor A1 - Ferrein, Alexander A1 - Lakemeyer, Gerhard T1 - Winning the RoboCup Logistics League with Fast Navigation, Precise Manipulation, and Robust Goal Reasoning T2 - RoboCup 2019: Robot World Cup XXIII. RoboCup Y1 - 2019 SN - 978-3-030-35699-6 U6 - http://dx.doi.org/10.1007/978-3-030-35699-6_41 N1 - Lecture Notes in Computer Science, vol 11531 SP - 504 EP - 516 PB - Springer CY - Cham ER - TY - CHAP A1 - Hofmann, Till A1 - Mataré, Victor A1 - Neumann, Tobias A1 - Schönitz, Sebastian A1 - Henke, Christoph A1 - Limpert, Nicolas A1 - Niemueller, Tim A1 - Ferrein, Alexander A1 - Jeschke, Sabina A1 - Lakemeyer, Gerhard T1 - Enhancing Software and Hardware Reliability for a Successful Participation in the RoboCup Logistics League 2017 Y1 - 2018 SN - 978-3-030-00308-1 U6 - http://dx.doi.org/10.1007/978-3-030-00308-1_40 N1 - Lecture Notes in Computer Science, vol 11175 SP - 486 EP - 497 PB - Springer CY - Cham ER - TY - CHAP A1 - Hofmann, Till A1 - Mataré, Victor A1 - Schiffer, Stefan A1 - Ferrein, Alexander A1 - Lakemeyer, Gerhard T1 - Constraint-based online transformation of abstract plans into executable robot actions T2 - Proceedings of the 2018 AAAI Spring Symposium on Integrating Representation, Reasoning, Learning, and Execution for Goal Directed Autonomy Y1 - 2018 SP - 549 EP - 553 ER - TY - CHAP A1 - Hüning, Felix T1 - Power semiconductors : key components for HEV/EV T2 - FISITA 2014 World Automotive Congress : 2 - 6 June, Maastricht, the Netherlands International Federation of Automotive Engineering Societies Y1 - 2014 N1 - Datenformat: PDF PB - KIVI CY - [s.l.] ER - TY - CHAP A1 - Hüning, Felix T1 - Power Semiconductors for the automotive 48V board net T2 - PCIM Europe 2016 Conference Proceedings Y1 - 2016 SN - 978-3-8007-4186-1 SP - 1963 EP - 1969 PB - VDE Verl. CY - Berlin ER - TY - CHAP A1 - Hüning, Felix T1 - Sustainable changes beyond covid-19 for a second semester physics course for electrical engineering students T2 - Blended Learning in Engineering Education: challenging, enlightening – and lasting? N2 - The course Physics for Electrical Engineering is part of the curriculum of the bachelor program Electrical Engineering at University of Applied Science Aachen. Before covid-19 the course was conducted in a rather traditional way with all parts (lecture, exercise and lab) face-to-face. This teaching approach changed fundamentally within a week when the covid-19 limitations forced all courses to distance learning. All parts of the course were transformed to pure distance learning including synchronous and asynchronous parts for the lecture, live online-sessions for the exercises and self-paced labs at home. Using these methods, the course was able to impart the required knowledge and competencies. Taking the teacher’s observations of the student’s learning behaviour and engagement, the formal and informal feedback of the students and the results of the exams into account, the new methods are evaluated with respect to effectiveness, sustainability and suitability for competence transfer. Based on this analysis strong and weak points of the concept and countermeasures to solve the weak points were identified. The analysis further leads to a sustainable teaching approach combining synchronous and asynchronous parts with self-paced learning times that can be used in a very flexible manner for different learning scenarios, pure online, hybrid (mixture of online and presence times) and pure presence teaching. Y1 - 2021 SN - 978-2-87352-023-6 N1 - SEFI 49th Annual Conference Technische Universität Berlin (online), 13 – 16 September 2021 SP - 1405 EP - 1409 ER - TY - CHAP A1 - Hüning, Felix A1 - Heuermann, Holger A1 - Wache, Franz-Josef T1 - Wireless CAN T2 - Tagungsband AALE 2018 : das Forum für Fachleute der Automatisierungstechnik aus Hochschulen und Wirtschaft ; 15. Fachkonferenz, Regensburg ; [15. Konferenz für Angewandte Automatisierungstechnik in Lehre und Entwicklung / TH Köln; VFAALE, Verein der Freunde und Förderer der Angewandten Automatisierungstechnik] N2 - Das vorgestellte System zu Wireless CAN bietet die Möglichkeit, CAN kabellos zu übertragen. Beide vorgestellten und entwickelten Konzepte funktionieren korrekt und ermöglichen den Auf-bau von kabellosen CAN Schnittstellen. Durch den kleinen Aufbau kann diese Technologie auch für eingebettete Systeme verwendet werden. Zudem bietet dieser Ansatz die Möglichkeit, durch die Entwicklung von geeigneten ICs die Größe des Systems bis auf Bauteilgröße zu reduzieren, um eine noch bessere Integration in eingebettete Systeme zu ermöglichen. Dadurch wird die Technologie attraktiv für Einsatzgebiete, wo die oben aufgelisteten Vorteile zum Tragen kommen können. Diese Einsatzgebiete können sowohl im Automobil als auch im Industriebereich liegen. Y1 - 2018 SP - 135 EP - 144 PB - VDE Verlag ER - TY - CHAP A1 - Hüning, Felix A1 - Mund, Cindy T1 - Integration of agile development in standard labs T2 - 51st Annual Conference of the European Society for Engineering Education (SEFI) N2 - In addition to the technical content, modern courses at university should also teach professional skills to enhance the competencies of students towards their future work. The competency driven approach including technical as well as professional skills makes it necessary to find a suitable way for the integration into the corresponding module in a scalable and flexible manner. Agile development, for example, is essential for the development of modern systems and applications and makes use of dedicated professional skills of the team members, like structured group dynamics and communication, to enable the fast and reliable development. This paper presents an easy to integrate and flexible approach to integrate Scrum, an agile development method, into the lab of an existing module. Due to the different role models of Scrum the students have an individual learning success, gain valuable insight into modern system development and strengthen their communication and organization skills. The approach is implemented and evaluated in the module Vehicle Systems, but it can be transferred easily to other technical courses as well. The evaluation of the implementation considers feedback of all stakeholders, students, supervisor and lecturers, and monitors the observations during project lifetime. KW - professional skills KW - active learning KW - lab work KW - Agile development Y1 - 2023 U6 - http://dx.doi.org/10.21427/NK4Z-WS73 N1 - 51st Annual Conference of the European Society for Engineering Education, Technological University Dublin 10th-14th September, 2023 ER - TY - CHAP A1 - Hüning, Felix A1 - Stüttgen, Marcel T1 - Work in Progress: Interdisciplinary projects in times of COVID-19 crisis – challenges, risks and chances T2 - 2021 IEEE Global Engineering Education Conference (EDUCON) Y1 - 2021 U6 - http://dx.doi.org/10.1109/EDUCON46332.2021.9454006 SP - 1175 EP - 1179 ER - TY - CHAP A1 - Hüning, Felix A1 - Wache, Franz-Josef A1 - Magiera, David T1 - Redundant bus systems using dual-mode radio T2 - Proceedings of Sixth International Congress on Information and Communication Technology N2 - Communication via serial bus systems, like CAN, plays an important role for all kinds of embedded electronic and mechatronic systems. To cope up with the requirements for functional safety of safety-critical applications, there is a need to enhance the safety features of the communication systems. One measure to achieve a more robust communication is to add redundant data transmission path to the applications. In general, the communication of real-time embedded systems like automotive applications is tethered, and the redundant data transmission lines are also tethered, increasing the size of the wiring harness and the weight of the system. A radio link is preferred as a redundant transmission line as it uses a complementary transmission medium compared to the wired solution and in addition reduces wiring harness size and weight. Standard wireless links like Wi-Fi or Bluetooth cannot meet the requirements for real-time capability with regard to bus communication. Using the new dual-mode radio enables a redundant transmission line meeting all requirements with regard to real-time capability, robustness and transparency for the data bus. In addition, it provides a complementary transmission medium with regard to commonly used tethered links. A CAN bus system is used to demonstrate the redundant data transfer via tethered and wireless CAN. Y1 - 2021 SN - 978-981-16-2379-0 SN - 978-981-16-2380-6 U6 - http://dx.doi.org/10.1007/978-981-16-2380-6_73 N1 - Proceedings of Sixth International Congress on Information and Communication Technology, ICICT 2021, Brunel University, London, February 25–26, 2021 SP - 835 EP - 842 PB - Springer CY - Singapore ER - TY - CHAP A1 - Kallweit, Stephan A1 - Ferrein, Alexander A1 - Scholl, Ingrid A1 - Reichert, Walter T1 - Mobile Autonome Systeme in der Lehre, am Beispiel der ROS Summer School T2 - Tagungsband AALE 2014 : das Forum für Fachleute der Automatisierungstechnik aus Hochschulen und Wirtschaft ; 11. Fachkonferenz, Regensburg ; [11. Konferenz für Angewandte Automatisierungstechnik in Lehre und Entwicklung / Ostbayerische Technische Hochschule Regensburg; VFAALE, Verein der Freunde und Förderer der Angewandten Automatisierungstechnik] Y1 - 2014 SN - 978-3-8356-7142-3 N1 - Die Textverteilung der elektronischen Zweitveröffentlichung entspricht nicht der der o.g. Verlagsausgabe. SP - 157 EP - 163 PB - Dt. Industrieverl. CY - München ER - TY - CHAP A1 - Kirsch, Maximilian A1 - Mataré, Victor A1 - Ferrein, Alexander A1 - Schiffer, Stefan T1 - Integrating golog++ and ROS for Practical and Portable High-level Control T2 - 12th International Conference on Agents and Artificial Intelligence Y1 - 2020 U6 - http://dx.doi.org/10.5220/0008984406920699 ER - TY - CHAP A1 - Krause, Gregor T1 - Energiemanagement in Gebäuden T2 - Energiemanagement in Gebäuden : 24. April 2002 : Tagung und Ausstellung Y1 - 2002 SP - 1 EP - 10 PB - Fachhochschule Aachen CY - Aachen ER - TY - CHAP A1 - Krückel, Kai A1 - Nolden, Florian A1 - Ferrein, Alexander A1 - Scholl, Ingrid T1 - Intuitive visual teleoperation for UGVs using free-look augmented reality displays T2 - 2015 IEEE International Conference on Robotics and Automation (ICRA), Seattle, WA Y1 - 2015 U6 - http://dx.doi.org/10.1109/ICRA.2015.7139809 SP - 4412 EP - 4417 ER - TY - CHAP A1 - Köllensperger, P. A1 - Bragard, Michael A1 - Plum, T. A1 - De Doncker, R. W. T1 - The dual GCT : a new high-power device using optimized GCT technology T2 - Conference record of the 2007 IEEE Industry Applications Conference : 42. IAS annual meeting ; September 23 - 27, 2007, New Orleans, Louisiana, USA Y1 - 2007 SN - 978-1-4244-1260-0 (Online) SN - 978-1-4244-1259-4 (Print) U6 - http://dx.doi.org/10.1109/07IAS.2007.76 SP - 358 EP - 365 PB - IEEE Operations Center CY - Piscataway, NJ ER - TY - CHAP A1 - König, Johannes Alexander A1 - Kaiser, Steffen A1 - Wolf, Martin T1 - Entwicklung und Evaluierung eines Regeleditors für die grafische Erstellung von „Smart Living Environment“-Services T2 - Angewandte Forschung in der Wirtschaftsinformatik 2019 : Tagungsband zur 32. AKWI-Jahrestagung / hrsg. von Martin R. Wolf, Thomas Barton, Frank Herrmann, Vera G. Meister, Christian Müller, Christian Seel N2 - In diesem Paper wird die Entwicklung und Evaluation eines grafischen Regeleditors für das Erstellen von „Smart Living Environments“-Services vorgestellt. Dafür werden zunächst die Deduktion und Implementierung des grafischen Regeleditors erläutert. Anschließend wird eine Probandenstudie vorgestellt, in welcher der Mehrwert bezogen auf die Aspekte Zeit, Fehleranfälligkeit und Gebrauchstauglichkeit festgestellt wird. Y1 - 2019 SN - 978-3-944330-62-4 SP - 234 EP - 243 PB - mana-Buch CY - Heide ER - TY - CHAP A1 - König, Johannes Alexander A1 - Völker, Veronika A1 - Wolf, Martin T1 - The user-focused storybuilding framework for competence developing games - a design-framework considering the basics of an educational game’s story T2 - ACHI 2018 : The Eleventh International Conference on Advances in Computer-Human Interactions N2 - During the development of a Competence Developing Game’s (CDG) story it is indispensable to understand the target audience. Thereby, CDGs stories represent more than just the plot. The Story is about the Setting, the Characters and the Plot. As a toolkit to support the development of such a story, this paper introduces the UserFocused Storybuilding (short UFoS) Framework for CDGs. The Framework and its utilization will be explained, followed by a description of its development and derivation, including an empirical study. In addition, to simplify the Framework use regarding the CDG’s target audience, a new concept of Nine Psychographic Player Types will be explained. This concept of Player Types provides an approach to handle the differences in between players during the UFoS Framework use. Thereby, this article presents a unique approach to the development of target group-differentiated CDGs stories. KW - Competence Developing Game KW - Serious Game KW - Video Game KW - Story KW - Player Types Y1 - 2018 SN - 978-1-61208-616-3 N1 - Proceeding of the Eleventh International Conference on Advances in Computer-Human Interactions (ACHI 2018), Rome, Italy. SP - 98 EP - 106 ER - TY - CHAP A1 - König, Johannes Alexander A1 - Wolf, Martin ED - Stephanidis, C. T1 - The pyramid assessment framework for ‘competence developing games’ T2 - Communications in Computer and Information Science Y1 - 2016 SN - 978-331940541-4 U6 - http://dx.doi.org/10.1007/978-3-319-40542-1_37 SN - 1865-0929 N1 - 18th International Conference on Posters’ Extended Abstracts, HCI International 2016; Toronto; Canada; 17 July 2016 through 22 July 2016 VL - 618 SP - 232 EP - 237 PB - Springer ER - TY - CHAP A1 - König, Johannes Alexander A1 - Wolf, Martin T1 - Cybersecurity awareness training provided by the competence developing game GHOST T2 - ACHI 2018 : The Eleventh International Conference on Advances in Computer-Human Interactions N2 - This paper introduces a Competence Developing Game (CDG) for the purpose of a cybersecurity awareness training for businesses. The target audience will be discussed in detail to understand their requirements. It will be explained why and how a mix of business simulation and serious game meets these stakeholder requirements. It will be shown that a tablet and touchscreen based approach is the most suitable solution. In addition, an empirical study will be briefly presented. The study was carried out to examine how an interaction system for a 3D-tablet based CDG has to be designed, to be manageable for non-game experienced employees. Furthermore, it will be explained which serious content is necessary for a Cybersecurity awareness training CDG and how this content is wrapped in the game KW - Awareness KW - CDG KW - Serious Game KW - tablet game KW - business simulation Y1 - 2018 SN - 978-1-61208-616-3 N1 - Proceeding of the Eleventh International Conference on Advances in Computer-Human Interactions (ACHI 2018), Rome, Italy. SP - 81 EP - 87 ER - TY - CHAP A1 - Küppers, Malte A1 - Schuba, Marko A1 - Neugebauer, Georg A1 - Höner, Tim A1 - Hack, Sacha T1 - Security analysis of the KNX smart building protocol T2 - ARES '23: Proceedings of the 18th International Conference on Availability, Reliability and Security N2 - KNX is a protocol for smart building automation, e.g., for automated heating, air conditioning, or lighting. This paper analyses and evaluates state-of-the-art KNX devices from manufacturers Merten, Gira and Siemens with respect to security. On the one hand, it is investigated if publicly known vulnerabilities like insecure storage of passwords in software, unencrypted communication, or denialof-service attacks, can be reproduced in new devices. On the other hand, the security is analyzed in general, leading to the discovery of a previously unknown and high risk vulnerability related to so-called BCU (authentication) keys. Y1 - 2023 U6 - http://dx.doi.org/10.1145/3600160.3605167 N1 - Article No.: 87 ARES 2023, August 29–September 01, 2023, Benevento, Italy SP - 1 EP - 7 PB - ACM ER - TY - CHAP A1 - Land, Ingmar A1 - A., Peter A1 - Gligorevic, Snjezana T1 - Computation of symbol-wise mutual information in transmission systems with logAPP decoders and application to EXIT charts T2 - 5th International ITG Conference on Source and Channel Coding (SCC) : January 14 - 16, 2004, Erlangen ; conference record. (ITG-Fachbericht ; 181) Y1 - 2004 SN - 3-8007-2802-8 SP - 195 EP - 202 PB - VDE-Verl. CY - Berlin [u.a.] ER - TY - CHAP A1 - Leingartner, Max A1 - Maurer, Johannes A1 - Steinbauer, Gerald A1 - Ferrein, Alexander T1 - Evaluation of sensors and mapping approaches for disasters in tunnels T2 - IEEE International Symposium on Safety, Security, and Rescue Robotics : SSRR : 21-26 Oct. 2013, Linkoping, Sweden Y1 - 2013 SN - 978-1-4799-0879-0 SP - 1 EP - 7 ER - TY - CHAP A1 - Leise, Philipp A1 - Altherr, Lena T1 - Optimizing the design and control of decentralized water supply systems – a case-study of a hotel building T2 - EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization N2 - To increase pressure to supply all floors of high buildings with water, booster stations, normally consisting of several parallel pumps in the basement, are used. In this work, we demonstrate the potential of a decentralized pump topology regarding energy savings in water supply systems of skyscrapers. We present an approach, based on Mixed-Integer Nonlinear Programming, that allows to choose an optimal network topology and optimal pumps from a predefined construction kit comprising different pump types. Using domain-specific scaling laws and Latin Hypercube Sampling, we generate different input sets of pump types and compare their impact on the efficiency and cost of the total system design. As a realistic application example, we consider a hotel building with 325 rooms, 12 floors and up to four pressure zones. KW - Engineering optimization KW - Energy efficiency KW - Water KW - Pump System KW - Latin Hypercube Sampling Y1 - 2018 SN - 978-3-319-97773-7 SN - 978-3-319-97772-0 U6 - http://dx.doi.org/10.1007/978-3-319-97773-7_107 N1 - EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. 17-19 September 2018. Lisboa, Portugal SP - 1241 EP - 1252 PB - Springer CY - Cham ER - TY - CHAP A1 - Leise, Philipp A1 - Altherr, Lena A1 - Pelz, Peter F. T1 - Technical Operations Research (TOR) - Algorithms, not Engineers, Design Optimal Energy Efficient and Resilient Cooling Systems T2 - FAN2018 - Proceedings of the International Conference on Fan Noise, Aerodynamics, Applications and Systems N2 - The overall energy efficiency of ventilation systems can be improved by considering not only single components, but by considering as well the interplay between every part of the system. With the help of the method "TOR" ("Technical Operations Research"), which was developed at the Chair of Fluid Systems at TU Darmstadt, it is possible to improve the energy efficiency of the whole system by considering all possible design choices programmatically. We show the ability of this systematic design approach with a ventilation system for buildings as a use case example. Based on a Mixed-Integer Nonlinear Program (MINLP) we model the ventilation system. We use binary variables to model the selection of different pipe diameters. Multiple fans are model with the help of scaling laws. The whole system is represented by a graph, where the edges represent the pipes and fans and the nodes represents the source of air for cooling and the sinks, that have to be cooled. At the beginning, the human designer chooses a construction kit of different suitable fans and pipes of different diameters and different load cases. These boundary conditions define a variety of different possible system topologies. It is not possible to consider all topologies by hand. With the help of state of the art solvers, on the other side, it is possible to solve this MINLP. Next to this, we also consider the effects of malfunctions in different components. Therefore, we show a first approach to measure the resilience of the shown example use case. Further, we compare the conventional approach with designs that are more resilient. These more resilient designs are derived by extending the before mentioned model with further constraints, that consider explicitly the resilience of the overall system. We show that it is possible to design resilient systems with this method already in the early design stage and compare the energy efficiency and resilience of these different system designs. Y1 - 2018 N1 - International Conference on Fan Noise, Aerodynamics, Applications and Systems 18-20.04.2018 Darmstadt, Deutschland SP - 1 EP - 12 ER - TY - CHAP A1 - Leise, Philipp A1 - Breuer, Tim A1 - Altherr, Lena A1 - Pelz, Peter F. T1 - Development, validation and assessment of a resilient pumping system T2 - Proceedings of the Joint International Resilience Conference, JIRC2020 N2 - The development of resilient technical systems is a challenging task, as the system should adapt automatically to unknown disturbances and component failures. To evaluate different approaches for deriving resilient technical system designs, we developed a modular test rig that is based on a pumping system. On the basis of this example system, we present metrics to quantify resilience and an algorithmic approach to improve resilience. This approach enables the pumping system to automatically react on unknown disturbances and to reduce the impact of component failures. In this case, the system is able to automatically adapt its topology by activating additional valves. This enables the system to still reach a minimum performance, even in case of failures. Furthermore, timedependent disturbances are evaluated continuously, deviations from the original state are automatically detected and anticipated in the future. This allows to reduce the impact of future disturbances and leads to a more resilient system behaviour. KW - water supply system KW - fault detection KW - anticipation strategy Y1 - 2020 SN - 978-90-365-5095-6 N1 - Proceedings of the Joint International Resilience Conference 2020. Interconnected: Resilience Innovations for Sustainable Development Goals. 23 - 27 November, 2020 SP - 97 EP - 100 ER - TY - CHAP A1 - Leise, Philipp A1 - Simon, Nicolai A1 - Altherr, Lena T1 - Comparison of Piecewise Linearization Techniques to Model Electric Motor Efficiency Maps: A Computational Study T2 - Operations Research Proceedings 2019 N2 - To maximize the travel distances of battery electric vehicles such as cars or buses for a given amount of stored energy, their powertrains are optimized energetically. One key part within optimization models for electric powertrains is the efficiency map of the electric motor. The underlying function is usually highly nonlinear and nonconvex and leads to major challenges within a global optimization process. To enable faster solution times, one possibility is the usage of piecewise linearization techniques to approximate the nonlinear efficiency map with linear constraints. Therefore, we evaluate the influence of different piecewise linearization modeling techniques on the overall solution process and compare the solution time and accuracy for methods with and without explicitly used binary variables. KW - MINLP KW - Powertrain KW - Piecewise linearization KW - Efficiency optimization Y1 - 2020 SN - 978-3-030-48439-2 SN - 978-3-030-48438-5 U6 - http://dx.doi.org/10.1007/978-3-030-48439-2_55 N1 - Annual International Conference of the German Operations Research Society (GOR), Dresden, Germany, September 4-6, 2019 SP - 457 EP - 463 PB - Springer CY - Cham ER - TY - CHAP A1 - Lenz, Laura L. A1 - Wolf, Martin ED - Kritz, Willy Christian T1 - Economic evaluation of serious games with the comparative assessment framework COSEGA T2 - The shift from teaching to learning : individual, collective and organizational learning through gaming simulation ; proceedings of the 45th conference of the International Simulation and Gaming Association, Dornbirn 2014 Y1 - 2014 SN - 978-3-7639-5422-3 SP - 374 EP - 386 PB - Bertelsmann CY - [Bielefeld] ER - TY - CHAP A1 - Limpert, Nicolas A1 - Schiffer, Stefan A1 - Ferrein, Alexander T1 - A Local Planner for Ackermann-Driven Vehicles in ROS SBPL T2 - Proceedings of the International Conference on Pattern Recognition Association of South Africa and Robotics and Mechatronics (PRASA-RobMech), 2015 Y1 - 2015 U6 - http://dx.doi.org/10.1109/RoboMech.2015.7359518 SP - 172 EP - 177 ER - TY - CHAP A1 - Lindenlauf, Simon A1 - Höfken, Hans-Wilhelm A1 - Schuba, Marko T1 - Cold Boot Attacks on DDR2 and DDR3 SDRAM T2 - 10th International Conference on Availability, Reliability and Security (ARES) 2015 Y1 - 2015 U6 - http://dx.doi.org/10.1109/ARES.2015.28 SP - 287 EP - 292 ER - TY - CHAP A1 - Lindner, Marvin A1 - Kolb, Andreas A1 - Ringbeck, Thorsten T1 - New insights into the calibration of ToF-sensors T2 - 2008 IEEE Computer Society Conference on Computer Vision and Pattern Recognition workshops : Anchorage, AK, 23 - 28 June 2008 N2 - Time-of-flight (ToF) sensors have become an alternative to conventional distance sensing techniques like laser scanners or image based stereo. ToF sensors provide full range distance information at high frame-rates and thus have a significant impact onto current research in areas like online object recognition, collision prevention or scene reconstruction. However, ToF cameras like the photonic mixer device (PMD) still exhibit a number of challenges regarding static and dynamic effects, e.g. systematic distance errors and motion artefacts, respectively. Sensor calibration techniques reducing static system errors have been proposed and show promising results. However, current calibration techniques in general need a large set of reference data in order to determine the corresponding parameters for the calibration model. This paper introduces a new calibration approach which combines different demodulation techniques for the ToF- camera 's reference signal. Examples show, that the resulting combined demodulation technique yields improved distance values based on only two required reference data sets. Y1 - 2008 SN - 978-1-4244-2339-2 SN - 978-1-4244-2340-8 SP - 1 EP - 5 PB - IEEE Service Center CY - Piscataway, NJ ER - TY - CHAP A1 - Logen, Steffen A1 - Höfken, Hans A1 - Schuba, Marko T1 - Simplifying RAM Forensics : A GUI and Extensions for the Volatility Framework T2 - 2012 Seventh International Conference on Availability, Reliability and Security (ARES), 20-24 August 2012, Prague, Czech Republic N2 - The Volatility Framework is a collection of tools for the analysis of computer RAM. The framework offers a multitude of analysis options and is used by many investigators worldwide. Volatility currently comes with a command line interface only, which might be a hinderer for some investigators to use the tool. In this paper we present a GUI and extensions for the Volatility Framework, which on the one hand simplify the usage of the tool and on the other hand offer additional functionality like storage of results in a database, shortcuts for long Volatility Framework command sequences, and entirely new commands based on correlation of data stored in the database. Y1 - 2012 SN - 978-1-4673-2244-7 U6 - http://dx.doi.org/10.1109/ARES.2012.12 SP - 620 EP - 624 PB - IEEE CY - New York ER - TY - CHAP A1 - Lohr, Jürgen T1 - High Quality Streaming und High Definition Media Services N2 - In: Konferenzband zur Konferenz Medienproduktion 2007, 1.12.2008. 29 S. High Quality Streaming beschäftigt sich mit High Definition Television und Mehrkanal Sound. In diesem Beitrag werden die Technologien und Anwendungsperspektiven für HD Medien-Dienstleistungen beschrieben. Der Beitrag entstand im Rahmen der Konferenz Medienproduktion „Expansion und Mobilität“ am 7. Dezember 2007. Der Beitrag beschreibt Geschäftsmodelle, Technologien und neue Anwendungen für High Quality Streaming. Neben der Präsentation wurden auch die Medienproduktionen der unterschiedlichen HQ-Mediendienste vorgeführt. Die Mediendienste sind im Rahmen der Forschungsarbeit High Quality Media Services des Studiengangs Communication and Multimedia Design (Fachbereich Elektrotechnik und Informationstechnik) an der Fachhochschule Aachen entstanden. Eine Marktevaluierung der deutschen und niederländischen Märkte, internationale Expertengesprächen sowie ein Prototypen HDMediaservices bilden die Basis der Forschungsarbeit. Die Mediendienste stehen zur Demonstration unter dem Link media.fh-aachen.de bereit. HQ-Mediendienste bedeuten: Gestochen scharfe Bilder in High Definition, volle Klänge in Surround und das über das Internet, wo doch gerade mal die briefmarkengroßen Bilder mit unscharfen Konturen und krätzenden Klängen der heutigen Portale wie YouTube Alltag sind. KW - HDTV KW - High Quality Streaming KW - High Definition Media Services Y1 - 2007 ER - TY - CHAP A1 - Lorenz, Imke-Sophie A1 - Altherr, Lena A1 - Pelz, Peter F. ED - Neufeld, Janis S. ED - Buscher, Udo ED - Lasch, Rainer ED - Möst, Dominik ED - Schönberger, Jörn T1 - Assessing and Optimizing the Resilience of Water Distribution Systems Using Graph-Theoretical Metrics T2 - Operations Research Proceedings 2019 N2 - Water distribution systems are an essential supply infrastructure for cities. Given that climatic and demographic influences will pose further challenges for these infrastructures in the future, the resilience of water supply systems, i.e. their ability to withstand and recover from disruptions, has recently become a subject of research. To assess the resilience of a WDS, different graph-theoretical approaches exist. Next to general metrics characterizing the network topology, also hydraulic and technical restrictions have to be taken into account. In this work, the resilience of an exemplary water distribution network of a major German city is assessed, and a Mixed-Integer Program is presented which allows to assess the impact of capacity adaptations on its resilience. KW - OR 2019 KW - business analytics KW - decision analytics KW - digital economy KW - mathematical optimization Y1 - 2020 SN - 978-3-030-48439-2 SN - 978-3-030-48438-5 U6 - http://dx.doi.org/10.1007/978-3-030-48439-2_63 N1 - Annual International Conference of the German Operations Research Society (GOR), Dresden, Germany, September 4-6, 2019 SP - 521 EP - 527 PB - Springer CY - Cham ER - TY - CHAP A1 - Lorenz, Imke-Sophie A1 - Altherr, Lena A1 - Pelz, Peter F. T1 - Resilience enhancement of critical infrastructure – graph-theoretical resilience analysis of the water distribution system in the German city of Darmstadt T2 - 14th WCEAM Proceedings N2 - Water suppliers are faced with the great challenge of achieving high-quality and, at the same time, low-cost water supply. Since climatic and demographic influences will pose further challenges in the future, the resilience enhancement of water distribution systems (WDS), i.e. the enhancement of their capability to withstand and recover from disturbances, has been in particular focus recently. To assess the resilience of WDS, graph-theoretical metrics have been proposed. In this study, a promising approach is first physically derived analytically and then applied to assess the resilience of the WDS for a district in a major German City. The topology based resilience index computed for every consumer node takes into consideration the resistance of the best supply path as well as alternative supply paths. This resistance of a supply path is derived to be the dimensionless pressure loss in the pipes making up the path. The conducted analysis of a present WDS provides insight into the process of actively influencing the resilience of WDS locally and globally by adding pipes. The study shows that especially pipes added close to the reservoirs and main branching points in the WDS result in a high resilience enhancement of the overall WDS. KW - Resilient infrastructure KW - Resilience assessment KW - Resilience metric graph theory KW - Water distribution system KW - Case study Y1 - 2020 SN - 978-3-030-64228-0 SN - 978-3-030-64227-3 U6 - http://dx.doi.org/10.1007/978-3-030-64228-0_13 N1 - 14th WCEAM Proceedings. World Congress on Engineering Asset Management, 28-31 July 2019, Singapore Part of the Lecture Notes in Mechanical Engineering book series (LNME) SP - 137 EP - 149 PB - Springer CY - Cham ER - TY - CHAP A1 - Lorenz, Imke-Sophie B. A1 - Altherr, Lena A1 - Pelz, Peter F. T1 - Graph-theoretic resilience analysis of a water distribution system's topology T2 - World Congress on Resilience, Reliability and Asset Management 2019 N2 - Water suppliers are faced with the great challenge of achieving high-quality and, at the same time, low-cost water supply. In practice, the focus is set on the most beneficial maintenance measures and/or capacity adaptations of existing water distribution systems (WDS). Since climatic and demographic influences will pose further challenges in the future, the resilience enhancement of WDS, i.e. the enhancement of their capability to withstand and recover from disturbances, has been in particular focus recently. To assess the resilience of WDS, metrics based on graph theory have been proposed. In this study, a promising approach is applied to assess the resilience of the WDS for a district in a major German City. The conducted analysis provides insight into the process of actively influencing the resilience of WDS KW - Resilience Assessment KW - Graph Theory KW - Water Supply System KW - Case Study Y1 - 2019 N1 - World Congress on Resilience, Reliability and Asset Management, 28-31 July 2019. Furama Riverfront Hotel, Singapore SP - 106 EP - 109 ER - TY - CHAP A1 - Luszczynski, K. A1 - Engels, Elmar T1 - Vergleichende Untersuchung zur Topologie von zelloptimalen, elektromobilitäts-optimierten Ladungsausgleichsvorrichtungen T2 - Tagungsband zur AALE-Tagung 2012 : 9. Fachkonferenz Y1 - 2012 SN - 978-3-8356-3305-6 N1 - AALE 2012 SP - 165 EP - 174 PB - Oldenbourg Industrieverlag CY - München ER - TY - CHAP A1 - Maike, Müller A1 - Lenz, Laura A1 - Wolf, Martin T1 - Steigerung der Effektivität durch Prozessmodellierungs-Tools - Änderbarkeit und Transparenz von Prozessen am Beispiel der Business Simulation Apollo 13 T2 - Informatik 2014 N2 - Die Nutzung von Prozessmodellierungsmethoden oder - werkzeugen kann erheblichen Einfluss auf die Effektivität von Prozessen haben. Das gilt insbesondere für Situationen, in denen Personen unter Stress stehen oder ungeübt sind. In diesen Fällen geben Prozessmodelle konkrete Empfehlungen, nach denen sich die handelnden Personen richten könnten. In Experimenten mit der Business-Simulation Apollo 13 haben wir den Effekt eines Einsatzes von Prozessmodellierungsmethoden und -werkzeugen untersucht. Bereits bekannte Theorien (z.B. über geeignete Verhältnisse von Kommunikationsinhalten) konnten bestätigt werden. Darüber hinaus haben wir eine besondere Bedeutung der Übertragbarkeit von Prozessmodellen in konkrete Handlungen identifiziert. Y1 - 2014 SN - 978-3-88579-626-8 SN - 1617-5468 SP - 357 EP - 369 PB - Gesellschaft für Informatik e.V. CY - Bonn ER - TY - CHAP A1 - Marco, Heather G. A1 - Ferrein, Alexander T1 - AGNES: The African-German Network of Excellence in Science T2 - Proceedings of the 2nd Developing World Robotics Forum, Workshop at IEEE AFRICON 2017 Y1 - 2017 SP - 1 EP - 2 ER - TY - CHAP A1 - Mataré, Victor A1 - Schiffer, Stefan A1 - Ferrein, Alexander ED - Steinbauer, Gerald ED - Ferrein, Alexander T1 - golog++ : An integrative system design T2 - CogRob 2018. Cognitive Robotics Workshop : Proceedings of the 11th Cognitive Robotics Workshop 2018 co-located with 16th International Conference on Principles of Knowledge Representation and Reasoning (KR 2018) Tempe, AZ, USA, October 27th, 2018 Y1 - 2019 SN - 1613-0073 SP - 29 EP - 35 ER - TY - CHAP A1 - Meck, Marvin M. A1 - Müller, Tim M. A1 - Altherr, Lena A1 - Pelz, Peter F. T1 - Improving an industrial cooling system using MINLP, considering capital and operating costs T2 - Operations Research Proceedings 2019 N2 - The chemical industry is one of the most important industrial sectors in Germany in terms of manufacturing revenue. While thermodynamic boundary conditions often restrict the scope for reducing the energy consumption of core processes, secondary processes such as cooling offer scope for energy optimisation. In this contribution, we therefore model and optimise an existing cooling system. The technical boundary conditions of the model are provided by the operators, the German chemical company BASF SE. In order to systematically evaluate different degrees of freedom in topology and operation, we formulate and solve a Mixed-Integer Nonlinear Program (MINLP), and compare our optimisation results with the existing system. KW - Engineering optimisation KW - Mixed-integer programming KW - Industrial optimisation KW - Cooling system KW - Process engineering Y1 - 2020 SN - 978-3-030-48438-5 (Print) SN - 978-3-030-48439-2 (Online) U6 - http://dx.doi.org/10.1007/978-3-030-48439-2_61 N1 - Annual International Conference of the German Operations Research Society (GOR), Dresden, Germany, September 4-6, 2019. SP - 505 EP - 512 PB - Springer CY - Cham ER - TY - CHAP A1 - Moll, Florian A1 - Köhler, Klemens A1 - Wolf, Martin T1 - Konzeption von IT-Sicherheitslösungen unter ethischen Gesichtspunkten am Beispiel einer Monitoring-App für mobile Endgeräte T2 - Angewandte Forschung in der Wirtschaftsinformatik 2019 : Tagungsband zur 32. AKWI-Jahrestagung N2 - Die steigende Popularität von mobilen Endgeräten im privaten und geschäftlichen Umfeld geht mit einem Anstieg an Sicherheitslücken und somit potentiellen Angriffsflächen einher. Als ein Element der technischen und organisatorischen Maßnahmen zum Schutz eines Netzwerkes können Monitoring-Apps dienen, die unerwünschtes Verhalten und Angriffe erkennen. Die automatisierte Überwachung von Endgeräten ist jedoch rechtlich und ethisch komplex. Dies in Kombination mit einer hohen Sensibilität der Nutzer und Nutzerinnen dieser Geräte in Bezug auf Privatsphäre, kann zu einer geringen Akzeptanz und Compliance führen. Eine datenschutzrechtlich und ethisch einwandfreie Konzeption solcher Apps bereits im Designprozess führt zu höherer Akzeptanz und verbessert so die Effizienz. Diese Analyse beschreibt Möglichkeiten zur Umsetzung. Y1 - 2019 SN - 978-3-944330-62-4 SP - 61 EP - 72 PB - mana-Buch CY - Heide ER - TY - CHAP A1 - Müller, Tim M. A1 - Altherr, Lena A1 - Ahola, Marja A1 - Schabel, Samuel A1 - Pelz, Peter F. ED - Rodrigues, H. C. T1 - Multi-Criteria optimization of pressure screen systems in paper recycling – balancing quality, yield, energy consumption and system complexity T2 - EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization N2 - The paper industry is the industry with the third highest energy consumption in the European Union. Using recycled paper instead of fresh fibers for papermaking is less energy consuming and saves resources. However, adhesive contaminants in recycled paper are particularly problematic since they reduce the quality of the resulting paper-product. To remove as many contaminants and at the same time obtain as many valuable fibres as possible, fine screening systems, consisting of multiple interconnected pressure screens, are used. Choosing the best configuration is a non-trivial task: The screens can be interconnected in several ways, and suitable screen designs as well as operational parameters have to be selected. Additionally, one has to face conflicting objectives. In this paper, we present an approach for the multi-criteria optimization of pressure screen systems based on Mixed-Integer Nonlinear Programming. We specifically focus on a clear representation of the trade-off between different objectives. Y1 - 2019 SN - 978-3-319-97773-7 U6 - http://dx.doi.org/10.1007/978-3-319-97773-7_105 N1 - EngOpt 2018 Proceedings of the 6th International Conference on Engineering Optimization. 17-19 September 2018. Lisboa, Portugal PB - Springer International Publishing CY - Basel ER - TY - CHAP A1 - Müller, Tim M. A1 - Altherr, Lena A1 - Leise, Philipp A1 - Pelz, Peter F. T1 - Optimization of pumping systems for buildings: Experimental validation of different degrees of model detail on a modular test rig T2 - Operations Research Proceedings 2019 N2 - Successful optimization requires an appropriate model of the system under consideration. When selecting a suitable level of detail, one has to consider solution quality as well as the computational and implementation effort. In this paper, we present a MINLP for a pumping system for the drinking water supply of high-rise buildings. We investigate the influence of the granularity of the underlying physical models on the solution quality. Therefore, we model the system with a varying level of detail regarding the friction losses, and conduct an experimental validation of our model on a modular test rig. Furthermore, we investigate the computational effort and show that it can be reduced by the integration of domain-specific knowledge. KW - Experimental validation KW - MINLP KW - Engineering optimization KW - Water supply system KW - Network design Y1 - 2020 SN - 978-3-030-48438-5 U6 - http://dx.doi.org/10.1007/978-3-030-48439-2_58 N1 - Annual International Conference of the German Operations Research Society (GOR), Dresden, Germany, September 4-6, 2019 SP - 481 EP - 488 PB - Springer CY - Cham ER - TY - CHAP A1 - Müller, Tim M. A1 - Schmitt, Andreas A1 - Leise, Philipp A1 - Meck, Tobias A1 - Altherr, Lena A1 - Pelz, Peter F. A1 - Pfetsch, Marc E. T1 - Validation of an optimized resilient water supply system T2 - Uncertainty in Mechanical Engineering N2 - Component failures within water supply systems can lead to significant performance losses. One way to address these losses is the explicit anticipation of failures within the design process. We consider a water supply system for high-rise buildings, where pump failures are the most likely failure scenarios. We explicitly consider these failures within an early design stage which leads to a more resilient system, i.e., a system which is able to operate under a predefined number of arbitrary pump failures. We use a mathematical optimization approach to compute such a resilient design. This is based on a multi-stage model for topology optimization, which can be described by a system of nonlinear inequalities and integrality constraints. Such a model has to be both computationally tractable and to represent the real-world system accurately. We therefore validate the algorithmic solutions using experiments on a scaled test rig for high-rise buildings. The test rig allows for an arbitrary connection of pumps to reproduce scaled versions of booster station designs for high-rise buildings. We experimentally verify the applicability of the presented optimization model and that the proposed resilience properties are also fulfilled in real systems. KW - Optimization KW - Mixed-integer nonlinear programming KW - Water distribution system KW - Resilience KW - Validation Y1 - 2021 SN - 978-3-030-77255-0 SN - 978-3-030-77256-7 U6 - http://dx.doi.org/10.1007/978-3-030-77256-7_7 N1 - Proceedings of the 4th International Conference on Uncertainty in Mechanical Engineering (ICUME 2021), June 7–8, 2021 SP - 70 EP - 80 PB - Springer CY - Cham ER - TY - CHAP A1 - Nees, Franz A1 - Stengel, Ingo A1 - Meister, Vera G. A1 - Barton, Thomas A1 - Herrmann, Frank A1 - Müller, Christian A1 - Wolf, Martin T1 - Angewandte Forschung in der Wirtschaftsinformatik 2020 : Tagungsband zur 33. AKWI-Jahrestagung am 14.09.2020, ausgerichtet von der Hochschule Karlsruhe - Wirtschaft und Technik / hrsg. von Franz Nees, Ingo Stengel, Vera G. Meister, Thomas Barton, Frank Herrmann, Christian Müller, Martin R. Wolf N2 - Tagungsbeiträge aus den Bereichen KI, Prozessorganisation und Plattformen für Geschäftsprozesse, Sicherheit und Datenschutz sowie Prototypen und Modelle. Y1 - 2020 U6 - http://nbn-resolving.de/urn/resolver.pl?urn:nbn:de:kobv:526-opus4-13840 SN - 978-3-944330-66-2 PB - mana-Buch CY - Heide ER - TY - CHAP A1 - Neth, Jannik A1 - Schuba, Marko A1 - Brodkorb, Karsten A1 - Neugebauer, Georg A1 - Höner, Tim A1 - Hack, Sacha T1 - Digital forensics triage app for android T2 - ARES '23: Proceedings of the 18th International Conference on Availability, Reliability and Security N2 - Digital forensics of smartphones is of utmost importance in many criminal cases. As modern smartphones store chats, photos, videos etc. that can be relevant for investigations and as they can have storage capacities of hundreds of gigabytes, they are a primary target for forensic investigators. However, it is exactly this large amount of data that is causing problems: extracting and examining the data from multiple phones seized in the context of a case is taking more and more time. This bears the risk of wasting a lot of time with irrelevant phones while there is not enough time left to analyze a phone which is worth examination. Forensic triage can help in this case: Such a triage is a preselection step based on a subset of data and is performed before fully extracting all the data from the smartphone. Triage can accelerate subsequent investigations and is especially useful in cases where time is essential. The aim of this paper is to determine which and how much data from an Android smartphone can be made directly accessible to the forensic investigator – without tedious investigations. For this purpose, an app has been developed that can be used with extremely limited storage of data in the handset and which outputs the extracted data immediately to the forensic workstation in a human- and machine-readable format. KW - Android KW - Digital triage KW - Triage-app Y1 - 2023 SN - 9798400707728 U6 - http://dx.doi.org/10.1145/3600160.3605017 N1 - ARES 2023: The 18th International Conference on Availability, Reliability and Security. August 29 - September 1, 2023. Benevento, Italy. PB - ACM ER - TY - CHAP A1 - Neugebauer, Georg A1 - Brutschy, Lucas A1 - Meyer, Ulrike A1 - Wetzel, Susanne ED - Garcia-Alfaro, Joaquin ED - Lioudakis, Georgios ED - Cuppens-Boulahia, Nora ED - Foley, Simon ED - Fitzgerald, William M. T1 - Privacy-preserving multi-party reconciliation secure in the malicious model T2 - DPM 2013, SETOP 2013: Data Privacy Management and Autonomous Spontaneous Security N2 - The problem of fair and privacy-preserving ordered set reconciliation arises in a variety of applications like auctions, e-voting, and appointment reconciliation. While several multi-party protocols have been proposed that solve this problem in the semi-honest model, there are no multi-party protocols that are secure in the malicious model so far. In this paper, we close this gap. Our newly proposed protocols are shown to be secure in the malicious model based on a variety of novel non-interactive zero-knowledge-proofs. We describe the implementation of our protocols and evaluate their performance in comparison to protocols solving the problem in the semi-honest case. KW - Privacy-enhancing technologies KW - Secure multi-party computation KW - Cryptographic protocols KW - Zero-knowledge proofs KW - Malicious model Y1 - 2014 SN - 978-3-642-54567-2 (Print) SN - 978-3-642-54568-9 (Online) U6 - http://dx.doi.org/10.1007/978-3-642-54568-9_12 N1 - 8th International Workshop, DPM 2013, and 6th International Workshop, SETOP 2013, Egham, UK, September 12-13, 2013. Part of the Lecture Notes in Computer Science book series (LNSC,volume 8247) SP - 178 EP - 193 PB - Springer CY - Berlin ER - TY - CHAP A1 - Neumann, Tobias A1 - Dülberg, Enno A1 - Schiffer, Stefan A1 - Ferrein, Alexander T1 - A rotating platform for swift acquisition of dense 3D point clouds T2 - Intelligent Robotics and Applications: 9th International Conference, ICIRA 2016, Tokyo, Japan, August 22-24, 2016, Proceedings, Part I Y1 - 2016 SN - 978-3-319-43505-3 (Print) SN - 978-3-319-43506-0 (Online) U6 - http://dx.doi.org/10.1007/978-3-319-43506-0_22 N1 - Series: Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) VL - 9834 SP - 257 EP - 268 PB - Springer ER - TY - CHAP A1 - Neumann, Tobias A1 - Ferrein, Alexander A1 - Kallweit, Stephan A1 - Scholl, Ingrid T1 - Towards a mobile mapping robot for underground mines T2 - 7th Conference of Robotics and Mechatronics : RobMech 2014 : 27th and 28th Nov. 2014, Cape Town Y1 - 2014 SP - 1 EP - 6 ER - TY - CHAP A1 - Niemueller, Tim A1 - Ferrein, Alexander A1 - Reuter, Sebastian A1 - Jeschke, Sabina A1 - Lakemeyer, Gerhard T1 - The RoboCup Logistics League as a Holistic Multi-Robot Smart Factory Benchmark T2 - Proceedings of the IROS 2015 Open forum on evaluation of results, replication of experiments and benchmarking in robotics research N2 - With autonomous mobile robots receiving increased attention in industrial contexts, the need for benchmarks becomes more and more an urgent matter. The RoboCup Logistics League (RCLL) is one specific industry-inspired scenario focusing on production logistics within a Smart Factory. In this paper, we describe how the RCLL allows to assess the performance of a group of robots within the scenario as a whole, focusing specifically on the coordination and cooperation strategies and the methods and components to achieve them. We report on recent efforts to analyze performance of teams in 2014 to understand the implications of the current grading scheme, and derived criteria and metrics for performance assessment based on Key Performance Indicators (KPI) adapted from classic factory evaluation. We reflect on differences and compatibility towards RoCKIn, a recent major benchmarking European project. Y1 - 2015 ER - TY - CHAP A1 - Niemueller, Tim A1 - Lakemeyer, Gerhard A1 - Ferrein, Alexander ED - Finzi, Alberto T1 - The RoboCup Logistics League as a Benchmark for Planning in Robotics T2 - Proceedings of the 3rd Workshop on Planning and Robotics (PlanRob-15); Jerusalem, Israel 7-8/6/2015 Y1 - 2015 SP - 63 EP - 68 ER - TY - CHAP A1 - Niemueller, Tim A1 - Neumann, Tobias A1 - Henke, Christoph A1 - Schönitz, Sebastian A1 - Reuter, Sebastian A1 - Ferrein, Alexander A1 - Jeschke, Sabina A1 - Lakemeyer, Gerhard T1 - Improvements for a robust production in the RoboCup logistics league 2016 T2 - RoboCup 2016: Robot World Cup XX. RoboCup 2016. Y1 - 2017 SN - 978-3-319-68792-6 U6 - http://dx.doi.org/10.1007/978-3-319-68792-6_49 SP - 589 EP - 600 PB - Springer CY - Cham ER - TY - CHAP A1 - Niemueller, Tim A1 - Neumann, Tobias A1 - Henke, Christoph A1 - Schönitz, Sebastian A1 - Reuter, Sebastian A1 - Ferrein, Alexander A1 - Jeschke, Sabina A1 - Lakemeyer, Gerhard T1 - International Harting Open Source Award 2016: Fawkes for the RoboCup Logistics League T2 - RoboCup 2016: RoboCup 2016: Robot World Cup XX. RoboCup 2016 Y1 - 2017 SN - 978-3-319-68792-6 U6 - http://dx.doi.org/10.1007/978-3-319-68792-6_53 N1 - Lecture Notes in Computer Science, LNCS, Vol 9776 SP - 634 EP - 642 PB - Springer CY - Cham ER - TY - CHAP A1 - Niemueller, Tim A1 - Reuter, Sebastian A1 - Ewert, Daniel A1 - Ferrein, Alexander A1 - Jeschke, Sabina A1 - Lakemeyer, Gerhard ED - Almeida, Luis T1 - The Carologistics Approach to Cope with the Increased Complexity and New Challenges of the RoboCup Logistics League 2015 T2 - RoboCup 2015: Robot World Cup XIX Y1 - 2016 SN - 978-3-319-29339-4 U6 - http://dx.doi.org/10.1007/978-3-319-29339-4_4 N1 - Lecture Notes in Computer Science ; 9513 SP - 47 EP - 59 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Niemueller, Tim A1 - Reuter, Sebastian A1 - Ferrein, Alexander ED - Almeida, Luis T1 - Fawkes for the RoboCup Logistics League T2 - RoboCup 2015: Robot World Cup XIX Y1 - 2016 SN - 978-3-319-29339-4 U6 - http://dx.doi.org/10.1007/978-3-319-29339-4_31 N1 - Lecture Notes in Computer Science ; 9513 SP - 365 EP - 373 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Niemueller, Tim A1 - Reuter, Sebastian A1 - Ferrein, Alexander A1 - Jeschke, Sabina A1 - Lakemeyer, Gerhard ED - Almeida, Luis T1 - Evaluation of the RoboCup Logistics League and Derived Criteria for Future Competitions T2 - RoboCup 2015: Robot World Cup XIX Y1 - 2016 SN - 978-3-319-29339-4 U6 - http://dx.doi.org/10.1007/978-3-319-29339-4_3 N1 - Lecture Notes in Computer Science ; 9513 SP - 31 EP - 43 PB - Springer International Publishing CY - Cham ER - TY - CHAP A1 - Niemüller, Tim A1 - Ewert, Daniel A1 - Reuter, Sebastian A1 - Ferrein, Alexander A1 - Jeschke, Sabina A1 - Lakemeyer, Gerhard T1 - The Carologistics RoboCup Logistics Team 2013 T2 - RoboCup 2013 : Eindhoven Y1 - 2013 SP - 1 EP - 8 ER - TY - CHAP A1 - Niemüller, Tim A1 - Ewert, Daniel A1 - Reuter, Sebastian A1 - Karras, Ulrich A1 - Ferrein, Alexander T1 - Towards benchmarking cyber-physical systems in factory automation scenarios T2 - KI 2013: advances in artificial intelligence : 36th Annual German Conference on AI, Koblenz, Germany, September 16-20, 2013 ; proceedings / Ingo J. Timm ... (ed.). (Lecture notes in computer science ; 8077) Y1 - 2013 SN - 978-3-642-40941-7 SP - 296 EP - 299 PB - Springer CY - Berlin [u.a.] ER - TY - CHAP A1 - Niemüller, Tim A1 - Lakemeyer, Gerhard A1 - Ferrein, Alexander T1 - Aspects of integrating diverse software into robotic systems extended abstract T2 - ICRA 2013 - 8th Workshop on Software Development and Integration in Robotics (SDIR), Karlsruhe, Germany Y1 - 2013 SP - 1 EP - 2 ER - TY - CHAP A1 - Niemüller, Tim A1 - Lakemeyer, Gerhard A1 - Ferrein, Alexander ED - Boots, Byron T1 - Incremental task-level reasoning in a competitive factory automation scenario T2 - Designing intelligent robots : reintegrating AI II ; papers from the AAAI spring symposium ; [held March 25 - 27, 2013 in Palo Alto, California, USA, on the campus of Stanford University]. (Technical Report / Association for the Advancement of Artificial Intelligence ; 2013,4) Y1 - 2013 SN - 9781577356011 SP - 43 EP - 48 ER - TY - CHAP A1 - Nikolovski, Gjorgji A1 - Limpert, Nicolas A1 - Nessau, Hendrik A1 - Reke, Michael A1 - Ferrein, Alexander T1 - Model-predictive control with parallelised optimisation for the navigation of autonomous mining vehicles T2 - 2023 IEEE Intelligent Vehicles Symposium (IV) N2 - The work in modern open-pit and underground mines requires the transportation of large amounts of resources between fixed points. The navigation to these fixed points is a repetitive task that can be automated. The challenge in automating the navigation of vehicles commonly used in mines is the systemic properties of such vehicles. Many mining vehicles, such as the one we have used in the research for this paper, use steering systems with an articulated joint bending the vehicle’s drive axis to change its course and a hydraulic drive system to actuate axial drive components or the movements of tippers if available. To address the difficulties of controlling such a vehicle, we present a model-predictive approach for controlling the vehicle. While the control optimisation based on a parallel error minimisation of the predicted state has already been established in the past, we provide insight into the design and implementation of an MPC for an articulated mining vehicle and show the results of real-world experiments in an open-pit mine environment. KW - Mpc KW - Control KW - Path-following KW - Navigation KW - Automation Y1 - 2023 SN - 979-8-3503-4691-6 (Online) SN - 979-8-3503-4692-3 (Print) U6 - http://dx.doi.org/10.1109/IV55152.2023.10186806 N1 - IEEE Symposium on Intelligent Vehicle, 4.-7. June 2023, Anchorage, AK, USA. PB - IEEE ER - TY - CHAP A1 - Nikolovski, Gjorgji A1 - Reke, Michael A1 - Elsen, Ingo A1 - Schiffer, Stefan T1 - Machine learning based 3D object detection for navigation in unstructured environments T2 - 2021 IEEE Intelligent Vehicles Symposium Workshops (IV Workshops) N2 - In this paper we investigate the use of deep neural networks for 3D object detection in uncommon, unstructured environments such as in an open-pit mine. While neural nets are frequently used for object detection in regular autonomous driving applications, more unusual driving scenarios aside street traffic pose additional challenges. For one, the collection of appropriate data sets to train the networks is an issue. For another, testing the performance of trained networks often requires tailored integration with the particular domain as well. While there exist different solutions for these problems in regular autonomous driving, there are only very few approaches that work for special domains just as well. We address both the challenges above in this work. First, we discuss two possible ways of acquiring data for training and evaluation. That is, we evaluate a semi-automated annotation of recorded LIDAR data and we examine synthetic data generation. Using these datasets we train and test different deep neural network for the task of object detection. Second, we propose a possible integration of a ROS2 detector module for an autonomous driving platform. Finally, we present the performance of three state-of-the-art deep neural networks in the domain of 3D object detection on a synthetic dataset and a smaller one containing a characteristic object from an open-pit mine. KW - 3D object detection KW - LiDAR KW - autonomous driving KW - Deep learning KW - Three-dimensional displays Y1 - 2021 SN - 978-1-6654-7921-9 U6 - http://dx.doi.org/10.1109/IVWorkshops54471.2021.9669218 N1 - 2021 IEEE Intelligent Vehicles Symposium Workshops (IV Workshops), 11-17 July 2021, Nagoya, Japan. SP - 236 EP - 242 PB - IEEE ER - TY - CHAP A1 - Nursinski-Stolberg, André A1 - Gangatharan, Kiritharan A1 - Czarnecki, Christian ED - Mayr, Heinrich C. ED - Pinzger, Martin T1 - Development of a subject-oriented reference process model for the telecommunications industry T2 - GI Edition Proceedings Band 259 INFORMATIK 2016 N2 - Generally the usage of reference models can be structured top-down or bottom-up. The practical need of agile change and flexible organizational implementation requires a consistent mapping to an operational level. In this context, well-established reference process models are typically structured top-down. The subject-oriented Business Process Management (sBPM) offers a modeling concept that is structured bottom-up and concentrates on the process actors on an operational level. This paper applies sBPM to the enhanced Telecom Operations Map (eTOM), a well-accepted reference process model in the telecommunications industry. The resulting design artifact is a concrete example for a combination of a bottom-up and top-down developed reference model. The results are evaluated and confirmed in practical context through the involvement of the industry body TMForum. KW - Subject-oriented Business Process Management KW - Reference Process Model KW - eTOM KW - Telecommunications Industry. Y1 - 2016 SN - 9783885796534 SN - 1617-5468 N1 - 26.-30. September 2016, Klagenfurt. SP - 699 EP - 712 PB - Gesellschaft für Informatik e.V. CY - Bonn ER - TY - CHAP A1 - Nötzold, K. A1 - Uphues, A. A1 - Wegener, R. A1 - Fink, K. A1 - Bragard, Michael A1 - Griessel, R. A1 - Soter, S. T1 - Inverter based test setup for LVRT verification of a full-scale 2 MW wind power converter T2 - 15th European Conference on Power Electronics and Applications (EPE), 2013 : 2 - 6 Sept. 2013, Lille, France / [EPE Association; PELS, IEEE Power Electronics Society] Y1 - 2013 SN - 978-1-4799-0115-9 (Online-Ausg.) U6 - http://dx.doi.org/10.1109/EPE.2013.6634752 SP - 1037 EP - 1042 PB - IEEE CY - Piscataway, NJ ER - TY - CHAP A1 - Nötzold, K. A1 - Uphues, A. A1 - Wegener, R. A1 - Soter, S. A1 - Fink, K. A1 - Bragard, Michael A1 - Griessel, R. T1 - Inverter based test setup for LVRT verification of a full-scale 2 MW wind power converter T2 - EPE Joint Wind Energy and T&D Chapters Seminar : 28th and 29th of June 2012, in the Utzon Centre, Aalborg, Denmark ; papers, posters, presentations. - Session 2: Grid connection, compliance Y1 - 2012 PB - EPE Association CY - Brussels ER - TY - CHAP A1 - Ostkotte, Sebastian A1 - Peters, Constantin A1 - Hüning, Felix A1 - Bragard, Michael T1 - Design, implementation and verification of an rotational incremental position encoder based on the magnetic Wiegand effect T2 - 2022 ELEKTRO (ELEKTRO) N2 - This paper covers the use of the magnetic Wiegand effect to design an innovative incremental encoder. First, a theoretical design is given, followed by an estimation of the achievable accuracy and an optimization in open-loop operation. Finally, a successful experimental verification is presented. For this purpose, a permanent magnet synchronous machine is controlled in a field-oriented manner, using the angle information of the prototype. KW - Position Encoder KW - Rotational Encoder KW - Wiegand Effect KW - Angle Sensor KW - Incremental Encoder Y1 - 2022 SN - 978-1-6654-6726-1 SN - 978-1-6654-6727-8 U6 - http://dx.doi.org/10.1109/ELEKTRO53996.2022.9803477 SN - 2691-0616 N1 - 2022 ELEKTRO (ELEKTRO), 23-26 Mai 2022, Krakow, Poland. PB - IEEE ER - TY - CHAP A1 - Penne, Jochen A1 - Profittlich, Martin A1 - Ringbeck, Thorsten A1 - Buxbaum, Bernd ED - D, Nicola D'Apuzzo T1 - Touchless detailed 3D scan of human hand anatomy using time-of-flight cameras T2 - Proceedings of the International Conference on 3D Body Scanning Technologies : Lugano, Switzerland, 19-20 October 2010 Y1 - 2010 SN - 978-3-033-02714-5 SP - 361 EP - 369 PB - Hometrica Consulting CY - Zürich ER - TY - CHAP A1 - Pisarczyk, Rafael A1 - Ritz, Thomas A1 - Sachtleben, Johanna ED - Boll-Westermann, Susanne T1 - KMU-taugliche Modelle zur Entwicklung gebrauchstauglicher mobiler Unternehmenssoftware T2 - Mensch & Computer 2013 - Workshopband : 13. fachübergreifende Konferenz für interaktive und kooperative Medien Y1 - 2013 SN - 978-3-486-77855-7 (Print) SN - 978-3-486-78123-6 (E-Book) U6 - http://dx.doi.org/10.1524/9783486781236 SP - 29 EP - 38 PB - Oldenbourg CY - München ER - TY - CHAP A1 - Rausch, Lea A1 - Friesen, John A1 - Altherr, Lena A1 - Pelz, Peter F. ED - Kliewer, Natalia ED - Ehmke, Jan Fabian ED - Borndörfer, Ralf T1 - Using mixed-integer programming for the optimal design of water supply networks for slums T2 - Operations Research Proceedings 2017 N2 - The UN sets the goal to ensure access to water and sanitation for all people by 2030. To address this goal, we present a multidisciplinary approach for designing water supply networks for slums in large cities by applying mathematical optimization. The problem is modeled as a mixed-integer linear problem (MILP) aiming to find a network describing the optimal supply infrastructure. To illustrate the approach, we apply it on a small slum cluster in Dhaka, Bangladesh. Y1 - 2018 SN - 978-3-319-89919-0 (Print) SN - 978-3-319-89920-6 (Online) U6 - http://dx.doi.org/10.1007/978-3-319-89920-6_68 N1 - International Conference of the German Operations Research Society (GOR), Freie Universiät Berlin, Germany, September 6-8, 2017. SP - 509 EP - 516 PB - Springer CY - Cham ER - TY - CHAP A1 - Rausch, Lea A1 - Leise, Philipp A1 - Ederer, Thorsten A1 - Altherr, Lena A1 - Pelz, Peter F. ED - Papadrakakis, M. ED - Ppadopoulos, V. ED - Stefanou, G. ED - Plevris, V. T1 - A comparison of MILP and MINLP solver performance on the example of a drinking water supply system design problem T2 - ECCOMAS Congress 2016 VII European Congress on Computational Methods in Applied Sciences and Engineering N2 - Finding a good system topology with more than a handful of components is a highly non-trivial task. The system needs to be able to fulfil all expected load cases, but at the same time the components should interact in an energy-efficient way. An example for a system design problem is the layout of the drinking water supply of a residential building. It may be reasonable to choose a design of spatially distributed pumps which are connected by pipes in at least two dimensions. This leads to a large variety of possible system topologies. To solve such problems in a reasonable time frame, the nonlinear technical characteristics must be modelled as simple as possible, while still achieving a sufficiently good representation of reality. The aim of this paper is to compare the speed and reliability of a selection of leading mathematical programming solvers on a set of varying model formulations. This gives us empirical evidence on what combinations of model formulations and solver packages are the means of choice with the current state of the art. KW - Technical Operations Research KW - Mixed-Integer Nonlinear Optimisation KW - Solver Per- formance KW - Drinking Water Supply KW - System Design Problem Y1 - 2016 SN - 978-618-82844-0-1 N1 - ECCOMAS Congress 2016 VII European Congress on Computational Methods in Applied Sciences and Engineering, 5–10 June 2016.Crete Island, Greece SP - 8509 EP - 8527 ER - TY - CHAP A1 - Reke, Michael A1 - Peter, Daniel A1 - Schulte-Tigges, Joschua A1 - Schiffer, Stefan A1 - Ferrein, Alexander A1 - Walter, Thomas A1 - Matheis, Dominik T1 - A Self-Driving Car Architecture in ROS2 T2 - 2020 International SAUPEC/RobMech/PRASA Conference, Cape Town, South Africa Y1 - 2020 SN - 978-1-7281-4162-6 U6 - http://dx.doi.org/10.1109/SAUPEC/RobMech/PRASA48453.2020.9041020 SP - 1 EP - 6 ER - TY - CHAP A1 - Ringbeck, Thorsten A1 - Albrecht, M. A1 - Frey, J. A1 - [u.a.], ED - Lerch, Reinhard T1 - Time-of-Flight 3D-camera for autonomous navigation and industrial automation T2 - Proceedings : 11th international conference, 13 - 15 May 2003, Exhibition Centre Nuremberg, Germany ; an event of the Association for Sensor Technology, AMA Y1 - 2003 N1 - Internationale Messe mit Kongress Sensor PB - AMA Service CY - Wunstorf/Germany ET - CD-ROM-Ausg. ER - TY - CHAP A1 - Ringbeck, Thorsten A1 - Buxbaum, Bernd T1 - Layoutoptimierte PMD-Strukturen für die schnelle 3D-Erfassung T2 - Messen in der Fertigung : 3D-Meßtechnik in Produktion und Entwicklung ; Fachtagung Optische Formerfassung ; Stuttgart, 5. - 6. Oktober 1999. - (Berichtsband / Deutsche Gesellschaft für Zerstörungsfreie Prüfung ; 70) Y1 - 1999 SN - 3-931381-30-7 N1 - Fachtagung Optische Formerfassung <1999, Stuttgart> SP - 233 EP - 243 PB - DGfZP CY - Berlin ER - TY - CHAP A1 - Ringbeck, Thorsten A1 - Hagebeuker, Bianca ED - Grün, Armin T1 - A 3D time of flight camera of object detection T2 - Optical 3-D measurement techniques VIII : applications in GIS, mapping, manufacturing, quality control, robotics, navigation, mobile mapping, medical imaging, cultural heritage, VR generation and animation; papers presented to the conference organized at ETH Zurich, Switzerland, July 9 - 12, 2007. - Vol. 1 Y1 - 2007 SN - 3-906467-67-8 (Gesamtwerk) N1 - Conference on Optical 3-D Measurement Techniques <8, 2007, Zürich> SP - 1 EP - 16 PB - ETH CY - Zürich ER - TY - CHAP A1 - Ringbeck, Thorsten A1 - Schwarte, Rudolf A1 - Buxbaum, Bernd ED - Korevaar, Eric John T1 - Introduction of a new opto-electrical phase-locked loop in CMOS technology: the PMD-PLL T2 - Optical wireless communications II / [SPIE Conference on Optical Wireless Communications II], 22 September 1999, Boston, Massachusetts. - (SPIE proceedings series ; 3850) Y1 - 1999 SN - 0-8194-3443-4 SN - 0038-7355 SN - 0361-0748 SN - 0277-786X N1 - Conference on Optical Wireless Communications <2, 1999, Boston, Mass. SP - 108 EP - 116 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Ringbeck, Thorsten A1 - Schwarte, Rudolf A1 - Buxbaum, Bernd A1 - Hess, Rudolf ED - Tang, Suning T1 - Optical GMSK modem for infrared wireless communication based on a new receiver principle in CMOS technology T2 - Optoelectronic interconnects VIII : 25 - 26 January 2001, San Jose, USA. - (Proceedings of SPIE ; 4292) Y1 - 2001 SN - 0-8194-3970-3 SN - 0038-7355 SN - 0361-0748 SN - 0277-786X N1 - Optoelectronic Interconnects <8, 2001, San Jose, Calif.> SP - 25 EP - 34 PB - SPIE CY - Bellingham, Wash. ER - TY - CHAP A1 - Ritschel, Konstantin A1 - Stenzel, Adina A1 - Czarnecki, Christian A1 - Hong, Chin-Gi ED - Gesellschaft für Informatik e.V. (GI), T1 - Realizing robotic process automation potentials: an architectural perspective on a real-life implementation case T2 - GI Edition Proceedings Band 314 "INFORMATIK 2021" Computer Science & Sustainability N2 - The initial idea of Robotic Process Automation (RPA) is the automation of business processes through a simple emulation of user input and output by software robots. Hence, it can be assumed that no changes of the used software systems and existing Enterprise Architecture (EA) is required. In this short, practical paper we discuss this assumption based on a real-life implementation project. We show that a successful RPA implementation might require architectural work during analysis, implementation, and migration. As practical paper we focus on exemplary lessons-learned and new questions related to RPA and EA. KW - Robotic Process Automation KW - Enterprise Architecture KW - Implementation Case Y1 - 2021 SN - 9783885797081 SN - 1617-5468 N1 - INFORMATIK 2021 – 51. Jahrestagung der Gesellschaft für Informatik, 27. September – 01. Oktober 2021 / Virtuell, Berlin. https://informatik2021.gi.de/ SP - 1303 EP - 1311 PB - Köllen CY - Bonn ER - TY - CHAP A1 - Ritz, Thomas ED - Zabel, Armin T1 - Produktion von kundenindividuellen Informationsdienstleistungen T2 - Workshop Internetbasierte Vertriebsunterstützung in der Praxis : 26. April 2001, Institutszentrum Stuttgart der Fraunhofer-Gesellschaft (IZS) / Fraunhofer Institut Arbeitswirtschaft und Organisation Y1 - 2001 N1 - Bei dem Beitrag im Tagungsband handelt es sich um einen Ausdruck von PowerPoint-Folien. PB - Fraunhofer IAO CY - Stuttgart ER - TY - CHAP A1 - Ritz, Thomas T1 - DISMED - an innovation portal for printing and media industry T2 - CRIS 2000 : the fifth conference on Current Research Information Systems in Europe, in Helsinki (Finland), 25-27 May 2000 Y1 - 2001 N1 - Programmpunkt: Cybercafé. PB - CORDIS Archive CY - [s.l.] ER - TY - CHAP A1 - Ritz, Thomas T1 - Production and distribution of personalized information services employing mass customization T2 - 2nd Interdisciplinary World Congress on Mass Customization and Personalization : MCPC'03, October 6 - 8, 2003, Technische Universität München, Munic, Germany Y1 - 2003 SP - Part IV PB - Techn. Univ. (TUM) CY - München ET - CD-Ausg. ER - TY - CHAP A1 - Ritz, Thomas T1 - Personalized information services : an electronic information commodity and its production T2 - Electronic publishing '01 : 2001 in the digital publishing odyssey ; proceedings of an ICCC/IFIP conference held at the University of Kent at Canterbury, Kent, United Kingdom, 5 - 7 July, 2001 ; [proceedings of the Fifth Conference on Electronic Publishing] Y1 - 2001 SN - 1-58603-191-0 SP - 48 EP - 58 PB - IOS Press [u.a.] CY - Amsterdam ER - TY - CHAP A1 - Ritz, Thomas ED - König-Ries, Brigitta T1 - Die benutzerzentrierte Entwicklung mobiler Unternehmenssoftware T2 - MMS 2007: Mobilität und mobile Informationssysteme : 2nd conference of GI-Fachgruppe MMS ; March 6th, 2007 in Aachen, Germany Y1 - 2007 SN - 978-3-88579-198-0 SP - 23 EP - 35 PB - Ges. für Informatik CY - Bonn ER - TY - CHAP A1 - Ritz, Thomas A1 - Fuchs, Britta ED - Breitner, Michael T1 - Kosten-Nutzen-Bewertungen bei mobilen Anwendungen T2 - Mobile und Ubiquitäre Informationssysteme - Technologien, Prozesse, Marktfahigkeit. Proceedings zur 3. Konferenz Mobile und Ubiquitäre Informationssysteme (MMS 2008) 26. - 28. Februar 2008, München, Germany. - (GI-Edition : Proceedings ; 123) Breitner, Michael H. [Hrsg.] Y1 - 2008 SN - 978-3-88579-217-8 SP - 164 EP - 177 PB - Ges. für Informatik CY - Bonn ER - TY - CHAP A1 - Ritz, Thomas A1 - Izquierdo Tello, César A1 - Damm, Sebastian T1 - Connecting a pedelec to the cloud as basis for gamification in multi modal mobility planning T2 - MobileCloud 2014 : 2nd IEEE International Conference on Mobile Cloud Computing, Services, and Engineering Oxford, United Kingdom 7-10 April 2014 Y1 - 2014 SN - 978-1-4799-2504-9 U6 - http://dx.doi.org/10.1109/MobileCloud.2014.25 SP - 101 EP - 108 PB - IEEE Service Center CY - Piscataway, NJ ER - TY - CHAP A1 - Ritz, Thomas A1 - Stender, Michael ED - Pousttchi, Key T1 - Modellierung von Business-to-Business Geschäftsprozessen im Mobile Commerce T2 - Mobile Commerce - Anwendung und Perspektiven : [proceedings zum] 3. Workshop Mobile Commerce, Universität Augsburg, 04.02.2003. - (GI-Edition : Proceedings ; 25) Y1 - 2003 SN - 3-88579-354-7 SP - 27 EP - 41 PB - Ges. für Informatik CY - Bonn ER -