TY - JOUR A1 - Beck, Daniel A1 - Buchleitner, Martin A1 - Ferrein, Alexander A1 - Niemüller, Tim A1 - Steinbauer, Gerald T1 - Mostly Harmless & AllemaniACs - mixed innovations Y1 - 2014 SP - 1 EP - 8 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Dylla, Frank A1 - Lakemeyer, Gerhard T1 - Acting and Deliberating using Golog in Robotic Soccer - A Hybrid Architecture / Dylla, Frank ; Ferrein, Alexander ; Lakemeyer, Gerhard JF - Proc. 3rd International Cognitive Robotics Workshop (CogRob 2002) Y1 - 2002 SP - 1 EP - 7 ER - TY - JOUR A1 - Ferrein, Alexander T1 - Logic-based robot control in highly dynamic domains / Ferrein, Alexander ; Lakemeyer, Gerhard JF - Robotics and Autonomous Systems. 56 (2008), H. 11 Y1 - 2008 SN - 0921-8890 SP - 980 EP - 991 ER - TY - JOUR A1 - König, Johannes Alexander A1 - Wolf, Martin R. T1 - GHOST: An Evaluated Competence Developing Game for Cybersecurity Awareness Training JF - International Journal on Advances in Security N2 - To train end users how to interact with digital systems is indispensable to ensure a strong computer security. 'Competence Developing Game'-based approaches are particularly suitable for this purpose because of their motivation-and simulation-aspects. In this paper the Competence Developing Game 'GHOST' for cybersecurity awareness trainings and its underlying patterns are described. Accordingly, requirements for an 'Competence Developing Game' based training are discussed. Based on these requirements it is shown how a game can fulfill these requirements. A supplementary game interaction design and a corresponding evaluation study is shown. The combination of training requirements and interaction design is used to create a 'Competence Developing Game'-based training concept. A part of these concept is implemented into a playable prototype that serves around one hour of play respectively training time. This prototype is used to perform an evaluation of the game and training aspects of the awareness training. Thereby, the quality of the game aspect and the effectiveness of the training aspect are shown. Y1 - 2018 SN - 1942-2636 VL - 11 IS - 3 & 4 SP - 274 EP - 287 PB - IARIA Journals ER - TY - JOUR A1 - Ferrein, Alexander A1 - Steinbauer, Gerald A1 - McPhillips, Graeme A1 - Potgieter, Anet T1 - RoboCup Standard Platform League - Team Zadeat : an intercontinental research effort Y1 - 2008 SP - 1 EP - 7 ER - TY - JOUR A1 - Gräßl, Andreas A1 - Renz, Wolfgang A1 - Hezel, Fabian A1 - Dieringer, Matthias A. A1 - Winter, Lukas A1 - Özerdem, Celal A1 - Rieger, Jan A1 - Kellmann, Peter A1 - Santoro, Davide A1 - Lindel, Tomasz D. A1 - Frauenrath, Tobias A1 - Pfeiffer, Harald A1 - Niendorf, Thoralf T1 - Modular 32-channel transceiver coil array for cardiac MRI at 7.0T JF - Magnetic Resonance in Medicine N2 - Purpose To design and evaluate a modular transceiver coil array with 32 independent channels for cardiac MRI at 7.0T. Methods The modular coil array comprises eight independent building blocks, each containing four transceiver loop elements. Numerical simulations were used for B1+ field homogenization and radiofrequency (RF) safety validation. RF characteristics were examined in a phantom study. The array's suitability for accelerated high spatial resolution two-dimensional (2D) FLASH CINE imaging of the heart was examined in a volunteer study. Results Transmission field adjustments and RF characteristics were found to be suitable for the volunteer study. The signal-to-noise intrinsic to 7.0T together with the coil performance afforded a spatial resolution of 1.1 × 1.1 × 2.5 mm3 for 2D CINE FLASH MRI, which is by a factor of 6 superior to standardized CINE protocols used in clinical practice at 1.5T. The 32-channel transceiver array supports one-dimensional acceleration factors of up to R = 4 without impairing image quality significantly. Conclusion The modular 32-channel transceiver cardiac array supports accelerated and high spatial resolution cardiac MRI. The array is compatible with multichannel transmission and provides a technological basis for future clinical assessment of parallel transmission techniques at 7.0T. Y1 - 2013 U6 - https://doi.org/10.1002/mrm.24903 SN - 1522-2594 VL - 72 IS - 1 SP - 276 EP - 290 PB - Wiley-Liss CY - New York ER - TY - JOUR A1 - Ferrein, Alexander A1 - Konur, Savas A1 - Lakemeyer, Gerhard T1 - Learning Decision Trees for Action Selection in Soccer Agents / Konur, Savas ; Ferrein, Alexander ; Lakemeyer, Gerhard Y1 - 2004 N1 - Proceedings of Workshop on Agents in dynamic and real-time environments SP - 1 EP - 7 ER - TY - JOUR A1 - Ferrein, Alexander T1 - Specifying Soccer Moves with Golog JF - Book of abstracts : Cologne, 15 - 17 September 2004 / 1st International Working Conference IT and Sport & 5th conference DVS-Section Computer Science in Sport Y1 - 2005 SN - 3-00-014576-1 N1 - International Working Conference IT and Sport 1, 2004, Köln ; Deutsche Vereinigung für Sportwissenschaft SP - 161 EP - 165 PB - German Sport Univ. CY - Köln ER - TY - JOUR A1 - Schopp, Christoph A1 - Doll, Timo A1 - Gräser, Ulrich A1 - Harzheim, Thomas A1 - Heuermann, Holger A1 - Kling, Rainer A1 - Marso, Michael T1 - Capacitively Coupled High-Pressure Lamp Using Coaxial Line Networks JF - IEEE Transactions on Microwave Theory and Techniques N2 - This paper describes the development of a capacitively coupled high-pressure lamp with input power between 20 and 43 W at 2.45 GHz, using a coaxial line network. Compared with other electrodeless lamp systems, no cavity has to be used and a reduction in the input power is achieved. Therefore, this lamp is an alternative to the halogen incandescent lamp for domestic lighting. To serve the demands of domestic lighting, the filling of the lamp is optimized over all other resulting requirements, such as high efficacy at low induced powers and fast startups. A workflow to develop RF-driven plasma applications is presented, which makes use of the hot S-parameter technique. Descriptions of the fitting process inside a circuit and FEM simulator are given. Results of the combined ignition and operation network from simulations and measurements are compared. An initial prototype is built and measurements of the lamp's lighting properties are presented along with an investigation of the efficacy optimizations using large signal amplitude modulation. With this lamp, an efficacy of 135 lmW -1 is achieved. Y1 - 2016 U6 - https://doi.org/10.1109/TMTT.2016.2600326 SN - 0018-9480 VL - 64 IS - 10 SP - 3363 EP - 3368 PB - IEEE CY - New York, NY ER - TY - JOUR A1 - Heuermann, Holger A1 - Schiek, Burkhard T1 - Line Network Network (LNN): an alternative in-fixture calibration procedure JF - IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 45 (1997), H. 3 Y1 - 1997 SN - 0018-9480 SP - 408 EP - 413 ER - TY - JOUR A1 - Heuermann, Holger A1 - Peters, N. A1 - Schmitz, T. A1 - Sadeghfam, Arash T1 - Concept of Balanced Antennas with Load-Invariant Base Impedance Using a Two Element LC-Coupler. Peters, N., Schmitz, Th., Sadeghfam, A., Heuermann, H. JF - Proceedings of the European microwave association : journal of the European microwave association Y1 - 2005 SP - 117 EP - 122 PB - PLUS CY - Pisa ER - TY - JOUR A1 - Foltz, Christian A1 - Schneider, Nicole A1 - Wolf, Martin R. A1 - Kausch, Bernhard A1 - Schlick, Christopher A1 - Luczak, Holger ED - Nagl, Manfred T1 - Usability engineering JF - Collaborative and distributed chemical engineering : from understanding to substantial design process support; results of the IMPROVE Project. - (Lecture notes in computer science ; 4970) Y1 - 2008 SN - 978-3-540-70552-9 U6 - https://doi.org/10.1007/978-3-540-70552-9_21 SP - 527 EP - 554 PB - Springer CY - Berlin ER - TY - JOUR A1 - Ferrein, Alexander A1 - Beck, Daniel A1 - Lakemeyer, Gerhard T1 - A Simulation Environment for Middle-Size Robots with Multi-level Abstraction / Beck, Daniel ; Ferrein, Alexander ; Lakemeyer, Gerhard JF - RoboCup 2007: Robot Soccer World Cup XI Y1 - 2007 SN - 978-3-540-68846-4 N1 - Lecture Notes in Computer Science ; 5001 SP - 136 EP - 147 PB - Springer CY - Berlin ER - TY - JOUR A1 - Heuermann, Holger A1 - Sadeghfam, Arash T1 - On the design of multimode integrated circuits in multilayered processes / Sadeghfam, A. ; Heuermann, H. JF - European Microwave Conference, 2007, 9-12 Oct. 2007 Y1 - 2007 SN - 978-2-87487-001-9 N1 - EuMC 2007 ; European Microwave Conference ; (37 : ; 2007.10.09-12 : ; Munich) SP - 516 EP - 519 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Jacobs, Stefan A1 - Schiffer, Stefan A1 - Beck, Daniel T1 - Robust Collision Avoidance in Unknown Domestic Environments / Jacobs, Stefan ; Ferrein, Alexander ; Schiffer, Stefan ; Beck, Daniel ; Lakemeyer, Gerhard JF - ROBOCUP 2009: ROBOT SOCCER WORLD CUP XIII Y1 - 2009 N1 - Lecture Notes in Computer Science ; 5949 SP - 116 EP - 127 PB - Springer CY - Berlin ER - TY - JOUR A1 - Ferrein, Alexander A1 - Dylla, Frank A1 - Lakemeyer, Gerhard A1 - Murray, Jan T1 - Towards a League-Independent Qualitative Soccer Theory for RoboCup / Dylla, Frank ; Ferrein, Alexander ; Lakemeyer, Gerhard ; Murray, Jan ; Obst, Oliver ; Röfer, Thomas ; Stolzenburg, Frieder ; Visser, Ubbo JF - RoboCup 2004: Robot Soccer World Cup VIII / Daniele Nardi ... (ed.). Y1 - 2005 SN - 978-3-540-25046-8 N1 - Lecture Notes in Computer Science ; 3276 SP - 611 EP - 618 PB - Springer CY - Berlin ER - TY - JOUR A1 - Roepke, Rene A1 - Köhler, Klemens A1 - Drury, Vincent A1 - Schroeder, Ulrik A1 - Wolf, Martin R. A1 - Meyer, Ulrike T1 - A pond full of phishing games - analysis of learning games for anti-phishing education JF - Model-driven Simulation and Training Environments for Cybersecurity. MSTEC 2020 N2 - Game-based learning is a promising approach to anti-phishing education, as it fosters motivation and can help reduce the perceived difficulty of the educational material. Over the years, several prototypes for game-based applications have been proposed, that follow different approaches in content selection, presentation, and game mechanics. In this paper, a literature and product review of existing learning games is presented. Based on research papers and accessible applications, an in-depth analysis was conducted, encompassing target groups, educational contexts, learning goals based on Bloom’s Revised Taxonomy, and learning content. As a result of this review, we created the publications on games (POG) data set for the domain of anti-phishing education. While there are games that can convey factual and conceptual knowledge, we find that most games are either unavailable, fail to convey procedural knowledge or lack technical depth. Thus, we identify potential areas of improvement for games suitable for end-users in informal learning contexts. Y1 - 2020 SN - 978-3-030-62433-0 U6 - https://doi.org/10.1007/978-3-030-62433-0_32020 N1 - Lecture Notes in Computer Science, vol 12512 SP - 41 EP - 60 PB - Springer CY - Cham ER - TY - JOUR A1 - Schopp, Christoph A1 - Rohrbach, Felix A1 - Langer, Luc A1 - Heuermann, Holger T1 - Detection of welding wire length by active S11 measurement JF - IEEE Transactions on Plasma Science N2 - A novel method to determine the extruded length of a metallic wire for a directed energy deposition (DED) process using a microwave (MW) plasma jet with a straight-through wire feed is presented. The method is based on the relative comparison of the measured frequency response obtained by the large-signal scattering parameter (Hot-S) technique. In the practical working range, repeatability of less than 6% for a nonactive plasma and 9% for the active plasma state is found. Measurements are conducted with a focus on a simple solution to decrease the processing time and reduce the integration time of the process into the existing hardware. It is shown that monitoring a single frequency for magnitude and phase changes is sufficient to achieve good accuracy. A combination of different measurement values to determine the length is possible. The applicability to different diameter of the same material is shown as well as a contact detection of the wire and metallic substrate. KW - Circuit simulation KW - Hot S-parameter KW - Modeling KW - Plasma KW - Plasma diagnostics Y1 - 2024 U6 - https://doi.org/10.1109/TPS.2024.3356659 SN - 0093-3813 (Print) SN - 1939-9375 (Online) IS - Early Access SP - 1 EP - 6 PB - IEEE ER - TY - JOUR A1 - Heuermann, Holger A1 - Schiek, B. T1 - Procedures for the Determination of the Scattering Parameters for Network Analyzer Calibration JF - IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 42 (1993), H. 2 Y1 - 1993 SN - 0018-9456 SP - 528 EP - 531 ER - TY - JOUR A1 - Ferrein, Alexander A1 - Beck, Daniel A1 - Lakemeyer, Gerhard T1 - Landmark-Based Representations for Navigating Holonomic Soccer Robots / Beck, Daniel ; Ferrein, Alexander ; Lakemeyer, Gerhard JF - RoboCup 2008 : robot soccer world cup XII / Luca Iocchi ... (eds.) Y1 - 2009 SN - 978-3-642-02921-9 N1 - Lecture Notes in Computer Science ; 5399 SP - 25 EP - 36 PB - Springer CY - Heidelberg ER -