TY  - CHAP
A1  - Ferrein, Alexander
A1  - Meeßen, Marcus
A1  - Limpert, Nicolas
A1  - Schiffer, Stefan
ED  - Lepuschitz, Wilfried
T1  - Compiling ROS schooling curricula via contentual taxonomies
T2  - Robotics in Education
N2  - The Robot Operating System (ROS) is the current de-facto standard in robot middlewares. The steadily increasing size of the user base results in a greater demand for training as well. User groups range from students in academia to industry professionals with a broad spectrum of developers in between. To deliver high quality training and education to any of these audiences, educators need to tailor individual curricula for any such training. In this paper, we present an approach to ease compiling curricula for ROS trainings based on a taxonomy of the teaching contents. The instructor can select a set of dedicated learning units and the system will automatically compile the teaching material based on the dependencies of the units selected and a set of parameters for a particular training. We walk through an example training to illustrate our work.
Y1  - 2021
SN  - 978-3-030-67411-3
U6  - https://doi.org/10.1007/978-3-030-67411-3_5
N1  - RiE: International Conference on Robotics in Education (RiE);
Advances in Intelligent Systems and Computing book series (AISC, volume 1316)
SP  - 49
EP  - 60
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  - Stopforth, Riaan
A1  - Davrajh, Shaniel
A1  - Ferrein, Alexander
T1  - Design considerations of the duo fugam dual rotor UAV
T2  - 2017 Pattern Recognition Association of South Africa and Robotics and Mechatronics (PRASA-RobMech)
Y1  - 2017
SN  - 978-1-5386-2314-5
U6  - https://doi.org/10.1109/RoboMech.2017.8261115
SP  - 7
EP  - 13
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  - https://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  - 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  - https://doi.org/10.1007/978-3-319-68792-6_49
SP  - 589
EP  - 600
PB  - Springer
CY  - Cham
ER  - 
TY  - CHAP
A1  - Hofmann, Till
A1  - Limpert, Nicolas
A1  - Mataré, Victor
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  - https://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  - Finger, Felix
A1  - Khalsa, R.
A1  - Kreyer, Jörg
A1  - Mayntz, Joscha
A1  - Braun, Carsten
A1  - Dahmann, Peter
A1  - Esch, Thomas
A1  - Kemper, Hans
A1  - Schmitz, O.
A1  - Bragard, Michael
T1  - An approach to propulsion system modelling for the conceptual design of hybrid-electric general aviation aircraft
T2  - Deutscher Luft- und Raumfahrtkongress 2019, 30.9.-2.10.2019, Darmstadt
N2  - In this paper, an approach to propulsion system modelling for hybrid-electric general aviation aircraft is presented. Because the focus is on general aviation aircraft, only combinations of electric motors and reciprocating combustion engines are explored. Gas turbine hybrids will not be considered. The level of the component's models is appropriate for the conceptual design stage. They are simple and adaptable, so that a wide range of designs with morphologically different propulsive system architectures can be quickly compared. Modelling strategies for both mass and efficiency of each part of the propulsion system (engine, motor, battery and propeller) will be presented.
Y1  - 2019
ER  - 
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  - https://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  - PAT
A1  - Bragard, Michael
A1  - Hüning, Felix
A1  - Kowalewski, Paul
T1  - Vorrichtung zur Relativlagenbestimmung [Offenlegungschrift]
N2  - Die Erfindung betrifft eine Vorrichtung zur Bestimmung einer Relativlage zwischen einem feststehenden Teil und einem zu demselben in eine Bewegungsrichtung bewegbaren beweglichen Teil, wobei der feststehende Teil mit einem Wiegandsensor versehen ist, wobei der Wiegandsensor zwischen zwei gegenpolig zueinander ausgebildeten Permanentmagneten angeordnet ist und dass der bewegliche Teil eine Mehrzahl von beabstandet zueinander angeordneten Magnetisierungsstegen aus einem magnetisch leitenden Material aufweist, die in der Bewegungsrichtung zumindest eine gleich große Erstreckung aufweisen wie der Permanentmagnet, dass ein Abstand zwischen benachbarten Magnetisierungsstegen derart gewählt ist, dass in einer ersten Relativlage ein erster Permanentmagnet von einem der Magnetisierungsstege überdeckt ist und ein zweiter Permanentmagnet nicht von einem der Magnetisierungsstege überdeckt ist.
Y1  - 2023
N1  - Offenlegungschrift zu DE102022115350A1 2023.12.21
ER  - 
TY  - CHAP
A1  - Wittig, M.
A1  - Rütters, René
A1  - Bragard, Michael
ED  - Reiff-Stephan, Jörg
ED  - Jäkel, Jens
ED  - Schwarz, André
T1  - Application of RL in control systems using the example of a rotatory inverted pendulum
T2  - Tagungsband AALE 2024 : Fit für die Zukunft: praktische Lösungen für die industrielle Automation
N2  - In this paper, the use of reinforcement learning (RL) in control systems is investigated using a rotatory inverted pendulum as an example. The control behavior of an RL controller is compared to that of traditional LQR and MPC controllers. This is done by evaluating their behavior under optimal conditions, their disturbance behavior, their robustness and their development process. All the investigated controllers are developed using MATLAB and the Simulink simulation environment and later deployed to a real pendulum model powered by a Raspberry Pi. The RL algorithm used is Proximal Policy Optimization (PPO). The LQR controller exhibits an easy development process, an average to good control behavior and average to good robustness. A linear MPC controller could show excellent results under optimal operating conditions. However, when subjected to disturbances or deviations from the equilibrium point, it showed poor performance and sometimes instable behavior. Employing a nonlinear MPC Controller in real time was not possible due to the high computational effort involved. The RL controller exhibits by far the most versatile and robust control behavior. When operated in the simulation environment, it achieved a high control accuracy. When employed in the real system, however, it only shows average accuracy and a significantly greater performance loss compared to the simulation than the traditional controllers. With MATLAB, it is not yet possible to directly post-train the RL controller on the Raspberry Pi, which is an obstacle to the practical application of RL in a prototyping or teaching setting. Nevertheless, RL in general proves to be a flexible and powerful control method, which is well suited for complex or nonlinear systems where traditional controllers struggle.
KW  - Rotatory Inverted Pendulum
KW  - MPC
KW  - LQR
KW  - PPO
KW  - Reinforcement Learning
Y1  - 2024
SN  - 978-3-910103-02-3
U6  - https://doi.org/10.33968/2024.53
N1  - 20. AALE-Konferenz. Bielefeld, 06.03.-08.03.2024.
(Tagungsband unter https://doi.org/10.33968/2024.29)
SP  - 241
EP  - 248
PB  - le-tex publishing services GmbH
CY  - Leipzig
ER  - 
TY  - PAT
A1  - Hüning, Felix
T1  - Positionssensorvorrichtung
N2  - Die Erfindung betrifft eine Positionssensorvorrichtung zur Bestimmung einer Absolutposition eines beweglichen ersten Teils relativ zu einem ortsfesten zweiten Teil mit einem mit dem beweglichen ersten Teil gekoppelter Codekörper, der dazu eingerichtet ist, eine Codespur mit einer Mehrzahl von in Spurrichtung aufeinanderfolgenden Codeelementen zu enthalten zur Bildung eines Codewortes, mit einer magnetischen Detektionseinrichtung zur Detektion der Codespur, wobei die Detektionseinrichtung zum einen an dem Codekörper befestigte und entlang der Spurrichtung in einem solchen Abstand gegenpolig zueinander angeordnete Permanentmagneten aufweist, dass der Abstand mit einer vorgegebenen Länge der jeweiligen Codeelemente übereinstimmt, und zum anderen eine Anzahl von ortsfest und quer zu dem Codekörper versetzt
angeordnete Wiegandsensoren aufweist, wobei der Abstand des Wiegandsensors zu einer Erstreckungsebene der Permanentmagneten derart gewählt ist, dass bei Überdeckung des Wiegandsensors durch den Permanentmagneten ein Wiegandpuls in dem Wiegandsensor induziert wird.
Y1  - 2024
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  - CHAP
A1  - Schneider, Dominik
A1  - Wisselink, Frank
A1  - Czarnecki, Christian
A1  - Nölle, Nikolai
T1  - Benefits and framework conditions for information-driven business models concerning the Internet of Things
T2  - Digitalization in companies
N2  - In the context of the increasing digitalization, the Internet of Things (IoT) is seen as a technological driver through which completely new business models can emerge in the interaction of different players. Identified key players include traditional industrial companies, municipalities and telecommunications companies. The latter, by providing connectivity, ensure that small devices with tiny batteries can be connected almost anywhere and directly to the Internet. There are already many IoT use cases on the market that provide simplification for end users, such as Philips Hue Tap. In addition to business models based on connectivity, there is great potential for information-driven business models that can support or enhance existing business models. One example is the IoT use case Park and Joy, which uses sensors to connect parking spaces and inform drivers about available parking spaces in real time. Information-driven business models can be based on data generated in IoT use cases. For example, a telecommunications company can add value by deriving more decision-relevant information – called insights – from data that is used to increase decision agility. In addition, insights can be monetized. The monetization of insights can only be sustainable, if careful attention is taken and frameworks are considered. In this chapter, the concept of information-driven business models is explained and illustrated with the concrete use case Park and Joy. In addition, the benefits, risks and framework conditions are discussed.
Y1  - 2024
SN  - 978-3-658-39093-8 (Print)
SN  - 978-3-658-39094-5 (eBook)
U6  - https://doi.org/10.1007/978-3-658-39094-5_5
SP  - 59
EP  - 75
PB  - Springer
CY  - Wiesbaden
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Marais, Stephen
A1  - Potgieter, Anet
A1  - Steinbauer, Gerald
T1  - RoboCup Junior: A vehicle for S&T education in Africa?
Y1  - 2011
SN  - 978-1-61284-992-8
N1  - AFRICON, 2011
SP  - 1
EP  - 6
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Steinbauer, Gerald
T1  - 20 Years of RoboCup -  A Subjective Retrospection
JF  - KI - Künstliche Intelligenz
N2  - This summer, RoboCup competitions were held for the 20th time in Leipzig, Germany. It was the second time that RoboCup took place in Germany, 10 years after the 2006 RoboCup in Bremen. In this article, we give an overview on the latest developments of RoboCup and what happened in the different leagues over the last decade. With its 20th edition, RoboCup clearly is a success story and a role model for robotics competitions. From our personal view point, we acknowledge this by giving a retrospection about what makes RoboCup such a success.
Y1  - 2016
U6  - https://doi.org/10.1007/s13218-016-0449-5
SN  - 1610-1987
VL  - 30
IS  - 3
SP  - 225
EP  - 232
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Steinbauer, Gerald
A1  - McPhillips, Graeme
A1  - Niemüller, Tim
A1  - Potgieter, Anet
T1  - Team Zadeat 2009 : team report
Y1  - 2009
VL  - 6
SP  - 1
ER  - 
TY  - GEN
A1  - Lindel, Tomasz Dawid
A1  - Greiser, Andreas
A1  - Waxman, Patrick
A1  - Dietterle, Martin
A1  - Seifert, Frank
A1  - Fontius, Ulrich
A1  - Renz, Wolfgang
A1  - Dieringer, Matthias A.
A1  - Frauenrath, Tobias
A1  - Schulz-Menger, Jeanette
A1  - Niendorf, Thoralf
A1  - Ittermann, Bernd
T1  - Cardiac CINE MRI at 7 T using a transmit array
T2  - 2012 ISMRM Annual Meeting Proceedings
N2  - With its need for high SNR and short acquisition times, Cardiac MRI (CMR) is an intriguing target application for ultrahigh field MRI. Due to the sheer size of the upper torso, however, the known RF issues of 7T MRI are also most prominent in CMR. Recent years brought substantial progress but the full potential of the ultrahigh field for CMR is yet to be exploited. Parallel transmission (pTx) is a promising approach in this context and several groups have already reported B1 shimming for 7T CMR. In such a static pTx application amplitudes and phases of all Tx channels are adjusted individually but otherwise imaging techniques established in current clinical practice 1.5 T and 3 T are applied. More advanced forms of pTx as spatially selective excitation (SSE) using Transmit SENSE promise additional benefits like faster imaging with reduced fields of view or improved SAR control. SSE requires the full dynamic capabilities of pTx, however, and for the majority of today's implemented pTx hardware the internal synchronization of the Tx array does not easily permit external triggering as needed for CMR. Here we report a software solution to this problem and demonstrate the feasibility of CINE CMR at 7 T using a Tx array.
Y1  - 2012
SN  - 1545-4428
N1  - ISMRM 20th Annual Meeting & Exhibition, 5-11 May 2012, Melbourne, Australia
ER  - 
TY  - JOUR
A1  - Leingartner, Max
A1  - Maurer, Johannes
A1  - Ferrein, Alexander
A1  - Steinbauer, Gerald
T1  - Evaluation of Sensors and Mapping Approaches for Disasters in Tunnels
JF  - Journal of Field Robotics
N2  - Ground or aerial robots equipped with advanced sensing technologies, such as three-dimensional laser scanners and advanced mapping algorithms, are deemed useful as a supporting technology for first responders. A great deal of excellent research in the field exists, but practical applications at real disaster sites are scarce. Many projects concentrate on equipping robots with advanced capabilities, such as autonomous exploration or object manipulation. In spite of this, realistic application areas for such robots are limited to teleoperated reconnaissance or search. In this paper, we investigate how well state-of-the-art and off-the-shelf components and algorithms are suited for reconnaissance in current disaster-relief scenarios. The basic idea is to make use of some of the most common sensors and deploy some widely used algorithms in a disaster situation, and to evaluate how well the components work for these scenarios. We acquired the sensor data from two field experiments, one from a disaster-relief operation in a motorway tunnel, and one from a mapping experiment in a partly closed down motorway tunnel. Based on these data, which we make publicly available, we evaluate state-of-the-art and off-the-shelf mapping approaches. In our analysis, we integrate opinions and replies from first responders as well as from some algorithm developers on the usefulness of the data and the limitations of the deployed approaches, respectively. We discuss the lessons we learned during the two missions. These lessons are interesting for the community working in similar areas of urban search and rescue, particularly reconnaissance and search.
Y1  - 2016
U6  - https://doi.org/10.1002/rob.21611
SN  - 1556-4967
VL  - 33
IS  - 8
SP  - 1037
EP  - 1057
PB  - Wiley-VCH
CY  - Weinheim
ER  - 
TY  - CHAP
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
A1  - Lakemeyer, Gerhard
T1  - Fuzzy representations and control for domestic service robots in Golog
T2  - Intelligent robotics and applications : 4th International conference, ICIRA 2011, Aachen, Germany, December 6-8, 2011, proceedings, part I. (Lecture notes in computer science ; 7102)
Y1  - 2011
SN  - 978-3-642-25486-4
SP  - 241
EP  - 250
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Information Channels
JF  - Information Technology. Nr. 52 (2000), H. 08. Mai 2000
Y1  - 2000
SP  - 15
EP  - 15
ER  - 
TY  - RPRT
A1  - Thoma, Andreas
A1  - Laarmann, Lukas
A1  - Merkens, Torsten
A1  - Franzke, Till
A1  - Möhren, Felix
A1  - Buttermann, Lilly
A1  - van der Weem, Dirk
A1  - Fischer, Maximilian
A1  - Misch, Philipp
A1  - Böhme, Mirijam
A1  - Röth, Thilo
A1  - Hebel, Christoph
A1  - Ritz, Thomas
A1  - Franke, Marina
A1  - Braun, Carsten
T1  - Entwicklung eines intermodalen Mobilitätskonzeptes für die Pilotregion NRW/Rhein-Maas Euregio und Schaffung voller Kundenakzeptanz durch Transfer von Standards aus dem PKW-Bereich auf ein Flugtaxi : Schlussbericht : Projektakronym: SkyCab (Kategorie B) : Laufzeit in Monaten: 6 : Hauptthema: Kategorie B: Innovative Ideen mit Bezug zu UAS/Flugtaxis
Y1  - 2020
N1  - Förderkennzeichen BMVI 45UAS1027A-F
PB  - FH Aachen
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Stender, Michael
T1  - Mobilität meistern - Integration von mobilen Akteuren durch ad-hoc Integrationskonzepte
JF  - Wireless Technologien nutzbar machen: UMTS und alternative Netzwerktechnologien für innovative mobile Anwendungen in Vertrieb und Service
Y1  - 2002
N1  - IAO-Forum 5. Juni 2002, Stuttgart
ER  - 
TY  - JOUR
A1  - Rens, Gavin
A1  - Varzinczak, Ivan
A1  - Meyer, Thomas
A1  - Ferrein, Alexander
T1  - A Logic for Reasoning about Actions and Explicit Observations
JF  - AI 2010: Advances in Artificial Intelligence 23rd Australasian Joint Conference, Adelaide, Australia, December 7-10, 2010. Proceedings
Y1  - 2010
SN  - 978-3-642-17431-5
N1  - Lecture Notes in Computer Science ; 6464
SP  - 395
EP  - 404
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - The double-LNN Calibration technique for scattering parameter measurements of microstrip devices
JF  - Conference proceedings
Y1  - 1995
N1  - European Microwave Conference <25, 1995, Bologna>
SP  - 343
EP  - 347
PB  - NEXUS House
CY  - Kent
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Stender, Michael
ED  - Weisbecker, Anette
T1  - Ad-hoc Anwendungsintegration mit mobilen CRM-Systement
JF  - Electronic Business : Innovationen, Anwendungen und Technologien
Y1  - 2004
SN  - 3-8167-6621-8
SP  - 92
EP  - 97
PB  - Fraunhofer-IRB-Verl.
CY  - Stuttgart
ER  - 
TY  - CHAP
A1  - Damm, Sebastian
A1  - Ritz, Thomas
A1  - Strauch, Jakob
ED  - Klink, Stefan
T1  - Benutzerzentrierte Anforderungsanalyse für die Produktlinien-Entwicklung mobiler Unternehmenssoftware
T2  - EMISA 2010 : Einflussfaktoren auf die Entwicklung flexibler, integrierter Informationssysteme ; Beiträge des Workshops der GI-Fachgruppe Entwicklungsmethoden für Informationssysteme und deren Anwendung (EMISA), 07. - 08.10.2010 in Karlsruhe, Germany. - (GI-Edition : Proceedings ; 172)
Y1  - 2010
SN  - 978-3-88579-266-6
SP  - 117
EP  - 130
PB  - Ges. für Informatik
CY  - Bonn
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Niemüller, Tim
A1  - Steinbauer, Gerald
T1  - Team Zadeat 2010 : application for participation
Y1  - 2010
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - Sure Methods of On-Wafer Scattering Parameter Measurements with Self-Calibration Procedures
Y1  - 1996
N1  - 46th ARFTG conference digest : November 30 - December 1. 1995, Safari Resort, Scottsdale, Arizona / Automatic RF Techniques Group. [Publ. chairman: Ed. Godshalk]
SP  - 136
EP  - 145
ER  - 
TY  - BOOK
A1  - Wolf, Martin R.
A1  - Foltz, Christian
A1  - Killich, S.
T1  - K3 User Guide
Y1  - 2000
SP  - 1
EP  - 13
PB  - RWTH
CY  - Aachen
ER  - 
TY  - JOUR
A1  - Hoffmann, Andreas
A1  - Rohrbach, Felix
A1  - Uhl, Matthias
A1  - Ceblin, Maximilian
A1  - Bauer, Thomas
A1  - Mallah, Marcel
A1  - Jacob, Timo
A1  - Heuermann, Holger
A1  - Kuehne, Alexander J. C.
T1  - Atmospheric pressure plasma-jet treatment of polyacrylonitrile-nonwovens—Stabilization and roll-to-roll processing
JF  - Journal of Applied Polymer Science
N2  - Carbon nanofiber nonwovens represent a powerful class of materials with prospective application in filtration technology or as electrodes with high surface area in batteries, fuel cells, and supercapacitors. While new precursor-to-carbon conversion processes have been explored to overcome productivity restrictions for carbon fiber tows, alternatives for the two-step thermal conversion of polyacrylonitrile precursors into carbon fiber nonwovens are absent. In this work, we develop a continuous roll-to-roll stabilization process using an atmospheric pressure microwave plasma jet. We explore the influence of various plasma-jet parameters on the morphology of the nonwoven and compare the stabilized nonwoven to thermally stabilized samples using scanning electron microscopy, differential scanning calorimetry, and infrared spectroscopy. We show that stabilization with a non-equilibrium plasma-jet can be twice as productive as the conventional thermal stabilization in a convection furnace, while producing electrodes of comparable electrochemical performance.
KW  - batteries and fuel cells
KW  - electrospinning
KW  - fibers
KW  - irradiation
KW  - porous materials
Y1  - 2022
U6  - https://doi.org/10.1002/app.52887
SN  - 0021-8995 (Print)
SN  - 1097-4628 (Online)
N1  - Weitere Informationen: Bundesministerium für Bildung und Forschung, Fördernummer: 13XP5036E. Deutsche Forschungsgemeinschaft, Fördernummern: 390874152, 441209207, 327886311
VL  - 139
IS  - 37
SP  - 1
EP  - 9
PB  - Wiley
ER  - 
TY  - CHAP
A1  - Schopp, Christoph
A1  - Heuermann, Holger
T1  - Electrodeless low pressure lamp with bi-static matching at 2.45 GHz
T2  - 2013 European Microwave Conference (EuMC) , Nuremberg
Y1  - 2013
SN  - 978-1-4799-0264-4
SP  - 881
EP  - 884
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
T1  - Autonome Entscheidungsfindung bei Robotern : Planwirtschaft
JF  - Linux-Magazin
Y1  - 2004
SN  - 1432-640X (Print)
IS  - 7
SP  - 50
EP  - 53
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Dylla, Frank
A1  - Lakemeyer, Gerhard
T1  - Specifying Multirobot Coordination in ICPGolog - From Simulation towards Real Robots / Dylla, Frank ; Ferrein, Alexander ; Lakemeyer, Gerhard
Y1  - 2003
N1  - AOS-4 at IJCAI-03
SP  - 1
EP  - 10
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - GSOLT: the calibration procedure for all multi-port vector network analyzers
JF  - IEEE MTT-S International Microwave Symposium digest : Philadelphia, Pennsylvania, 8 - 13 June 2003 ; [including: 2003 International Microwave Symposium digest, vol. 1-3, RF Integrated Circuit Symposium digest, Automatic RF Techniques Group Symposium digest . Vol. 3
Y1  - 2003
SN  - 0-780-37696-X
N1  - Nebent.: 2003 IEEE MTT-S International Microwave Symposium
SP  - 1815
EP  - 1818
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Poppel, Kristin Isabel
A1  - Wolf, Martin R.
T1  - Möglichkeiten und Potentiale von Revisionsmarketing
JF  - Zeitschrift Interne Revision : ZIR ; Fachzeitschrift für Wissenschaft und Praxis
Y1  - 2013
SN  - 0044-3816
VL  - 48
IS  - 4
SP  - 200
EP  - 208
PB  - Erich Schmidt Verlag
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - Microwave On-Wafer Measurements with Activ Needle Probe Tips
Y1  - 1997
N1  - 47th ARFTG Conference digest : June 20 - 21, 1996, Moscone Convention Center, San Francisco, California / Automatic RF Techniques Group. [Publication chair: Ed Godshalk
SP  - 208
EP  - 214
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Lünebach, M.
T1  - A Novel Dual-Mode-Design for Push-Push Oscillators with Improved Phase Noise Performance. Heuermann, Holger; Lünebach, M.
JF  - Conference proceedings : 3 - 7 October 2005, CNIT la Défense, Paris, France; [comprises the] 35th European Microwave Conference 2005 ; The European Conference on Wireless Technology 2005 ; European Radar Conference 2005 ; GAAS 2005, The European Gallium A. Vol. 1
Y1  - 2005
SN  - 2-9600551-0-1
N1  - European Microwave Conference ; (35, 2005, Paris) ; European Microwave Week ; (2005, Paris)
SP  - 4 pp.
PB  - Horizon House Publ
CY  - London
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Modelling Production of personalized information services and their delivery on multiple distribution channels
JF  - Personalization Techniques in Electronic Publishing on the Web. Workshop in the Framework of the 2nd international conference on Adaptive Hypermedia and adaptive web based systems (AH2002) in Malaga (ES)
Y1  - 2002
N1  - AH <2, 2002, Málaga>
SP  - 19
EP  - 30
ER  - 
TY  - CHAP
A1  - Niemüller, Tim
A1  - Ewert, Daniel
A1  - Reuter, Sebastian
A1  - Ferrein, Alexander
A1  - Jeschke, Sabina
A1  - Lakemeyer, Gerhard
T1  - RoboCup logistics league sponsored by festo: A competitive factory automation testbed
T2  - RoboCup 2013: Robot World Cup XVII :  Eindhoven; Netherlands; 1 July 2013 through 1 July 2013. (Lecture notes in computer science ; 8371)
N2  - A new trend in automation is to deploy so-called cyber-physical systems (CPS) which combine computation with physical processes. The novel RoboCup Logistics League Sponsored by Festo (LLSF) aims at such CPS logistic scenarios in an automation setting. A team of robots has to produce products from a number of semi-finished products which they have to machine during the game. Different production plans are possible and the robots need to recycle scrap byproducts. This way, the LLSF is a very interesting league offering a number of challenging research questions for planning, coordination, or communication in an application-driven scenario. In this paper, we outline the objectives of the LLSF and present steps for developing the league further towards a benchmark for logistics scenarios for CPS. As a major milestone we present the new automated referee system which helps in governing the game play as well as keeping track of the scored points in a very complex factory scenario.
Y1  - 2014
SN  - 978-3-662-44467-2 (Print) 978-3-662-44468-9 (Online)
SP  - 336
EP  - 347
PB  - Springer
CY  - Berlin
ER  - 
TY  - BOOK
A1  - Bochmann, Sandra
A1  - Ritz, Thomas
T1  - Prototyping tools for mobile applications
Y1  - 2013
SN  - 978-3-943356-45-8
PB  - Steinbeis-Ed.
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Steinbauer, Gerald
A1  - Vassos, Stavros
T1  - Action-Based Imperative Programming with YAGI
N2  - Many tasks for autonomous agents or robots are best described by a specification of the environment and a specification of the available actions the agent or robot can perform. Combining such a specification with the possibility to imperatively program a robot or agent is what we call the actionbased imperative programming. One of the most successful such approaches is Golog. In this paper, we draft a proposal for a new robot programming language YAGI, which is based on the action-based imperative programming paradigm. Our goal is to design a small, portable stand-alone YAGI interpreter. We combine the benefits of a principled domain specification with a clean, small and simple programming language, which does not exploit any side-effects from the implementation language. We discuss general requirements of action-based programming languages and outline YAGI, our action-based language approach which particularly aims at embeddability.
Y1  - 2012
N1  - Cognitive Robotics
AAAI Technical Report WS-12-06
SP  - 24
EP  - 31
ER  - 
TY  - CHAP
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
T1  - A System Layout for Cognitive Service Robots
T2  - Cognitive Robot Architectures. Proceedings of EUCognition 2016
Y1  - 2017
SN  - 1613-0073
N1  - CEUR-WS Vol-1855
SP  - 44
EP  - 45
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  - JOUR
A1  - Ritz, Thomas
A1  - Benz, Axel
ED  - Spath, Dieter
T1  - Informationserfassung im Außendienst
JF  - CRM-Systeme in produzierenden Unternehmen. - (IAO-Forum : mit Anwenderberichten)
Y1  - 2004
N1  - Fraunhofer IAO Forum 31. März 2004
VL  - 2004
PB  - IRB-Verl.
CY  - Stuttgart
ER  - 
TY  - BOOK
A1  - Anthrakidis, Anette
A1  - Jahn, Roland
A1  - Ritz, Thomas
A1  - Schöttler, Mirjam
A1  - Wallenborn, Ramona
A1  - Warmke, Gisela
T1  - Urbanes eCarSharing in einer vernetzten Gesellschaft
Y1  - 2013
SN  - 978-3-943356-70-0
PB  - Steinbeis-Edition
CY  - Stuttgart
ET  - 1. Aufl.
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Lakemeyer, Gerhard
T1  - Wie Roboter die Welt sehen : Roboterfußball im Dienst der Wissenschaft / Ferrein, Alexander ; Lakemeyer, Gerhard
JF  - Bild und Erkenntnis : Formen und Funktionen des Bildes in Wissenschaft und Technik / RWTH. Andreas Beyer ; Markus Lohoff (Hrsg.)
Y1  - 2005
SN  - 3-422-06463-X
SP  - 360
EP  - 361
PB  - Deutscher Kunstverlag
CY  - München
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 R.
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
N1  - 33. AKWI-Jahrestagung am 14.09.2020, ausgerichtet von der Hochschule Karlsruhe - Wirtschaft und Technik
PB  - mana-Buch
CY  - Heide
ER  - 
TY  - BOOK
A1  - Heuermann, Holger
T1  - Mikrowellentechnik
Y1  - 2014
ET  - 4. Aufl.
ER  - 
TY  - CHAP
A1  - Zug, Sebastian
A1  - Niemueller, Tim
A1  - Hochgeschwender, Nico
A1  - Seidensticker, Kai
A1  - Seidel, Martin
A1  - Friedrich, Tim
A1  - Neumann, Tobias
A1  - Karras, Ulrich
A1  - Kraetzschmar, Gerhard K.
A1  - Ferrein, Alexander
T1  - An Integration Challenge to Bridge the Gap Among Industry-Inspired RoboCup Leagues
T2  - RoboCup 2016: Robot World Cup XX. RoboCup 2016.
Y1  - 2017
SN  - 978-3-319-68792-6
U6  - https://doi.org/10.1007/978-3-319-68792-6_13
N1  - Lecture Notes in Computer Science, LNCS, Vol 9776
SP  - 157
EP  - 168
PB  - Springer
CY  - Cham
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Hermanns, Lutz
A1  - Lakemeyer, Gerhard
T1  - Comparing Sensor Fusion Techniques for Ball Position Estimation / Ferrein, Alexander ; Hermanns, Lutz ; Lakemeyer, Gerhard
JF  - RoboCup 2005: Robot Soccer World Cup IX
Y1  - 2006
SN  - 978-3-540-35437-6
N1  - Lecture Notes in Computer Science ; 4020
SP  - 154
EP  - 165
PB  - Springer
CY  - Berlin
ER  -