TY  - JOUR
A1  - Grande, Marion
A1  - Meffert, Elisabeth
A1  - Schoenberger, Eva
A1  - Jung, Stefanie
A1  - Frauenrath, Tobias
A1  - Huber, Walter
A1  - Hussmann, Katja
A1  - Moormann, Mareike
A1  - Heim, Stefan
T1  - From a concept to a word in a syntactically complete sentence: An fMRI study on spontaneous language production in an overt picture description task
JF  - NeuroImage
N2  - Spontaneous language has rarely been subjected to neuroimaging studies. This study therefore introduces a newly developed method for the analysis of linguistic phenomena observed in continuous language production during fMRI.

Most neuroimaging studies investigating language have so far focussed on single word or — to a smaller extent — sentence processing, mostly due to methodological considerations. Natural language production, however, is far more than the mere combination of words to larger units. Therefore, the present study aimed at relating brain activation to linguistic phenomena like word-finding difficulties or syntactic completeness in a continuous language fMRI paradigm. A picture description task with special constraints was used to provoke hesitation phenomena and speech errors. The transcribed speech sample was segmented into events of one second and each event was assigned to one category of a complex schema especially developed for this purpose. The main results were: conceptual planning engages bilateral activation of the precuneus. Successful lexical retrieval is accompanied – particularly in comparison to unsolved word-finding difficulties – by the left middle and superior temporal gyrus. Syntactic completeness is reflected in activation of the left inferior frontal gyrus (IFG) (area 44). In sum, the method has proven to be useful for investigating the neural correlates of lexical and syntactic phenomena in an overt picture description task. This opens up new prospects for the analysis of spontaneous language production during fMRI.
Y1  - 2012
U6  - https://doi.org/10.1016/j.neuroimage.2012.03.087
SN  - 1522-2586
VL  - 61
IS  - 3
SP  - 702
EP  - 714
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - A 14 W SPST Switch with Four PIN-Diodes In a 0402-SMD-Package
Y1  - 2008
SN  - 978-3-8007-3086-5
N1  - Microwave Conference (GeMIC), 2008 German
SP  - 318
EP  - 321
ER  - 
TY  - JOUR
A1  - Niemüller, Tim
A1  - Ferrein, Alexander
A1  - Lakemeyer, Gerhard
T1  - A Lua-based Behavior Engine for Controlling the Humanoid Robot Nao
JF  - RoboCup 2009: Robot Soccer World Cup XIII
Y1  - 2010
N1  - Lecture Notes in Computer Science ; 5949
SP  - 240
EP  - 251
ER  - 
TY  - JOUR
A1  - Niemueller, Tim
A1  - Karras, Ulrich
A1  - Ferrein, Alexander
T1  - Meisterschaft der Maschinen: Die Industrial Logistic Liga
JF  - C´t Magazin für Computertechnik
Y1  - 2017
IS  - 26
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - The In-Fixture Calibration Procedure Line-Network-Network-LNN
JF  - Conference proceedings : monday 6th to thursday 9th september 1993, Palacio de Congresos, Madrid, Spain ; [the international conference and exhibition designed for the Microwave Community]
Y1  - 1992
SN  - 0-946821-23-2
N1  - European Microwave Conference <23, 1993, Madrid>
SP  - 500
EP  - 505
PB  - Reed Exhibition Companies
CY  - Tunbridge Wells
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, B.
T1  - Robust Algorithms for Txx Network Analyzer Self-Calibration Procedures
JF  - IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 43 (1994), H. 1
Y1  - 1994
SN  - 0018-9456
SP  - 18
EP  - 23
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Siebel, Nils T.
A1  - Steinbauer, Gerald
T1  - Hybrid control for autonomous systems — Integrating learning, deliberation and reactive control
JF  - Robotics and Autonomous Systems
Y1  - 2010
SN  - 0921-8890
VL  - 58
IS  - 9
SP  - 1037
EP  - 1038
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Ibrahim, Irfan
T1  - Improvements in the flicker noise reduction technique for osillator designs / Ibrahim, Irfan ; Heuermann, Holger
JF  - European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE
Y1  - 2009
SN  - 978-1-4244-4748-0
N1  - EuMC 2009
SP  - 1215
EP  - 1218
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - A Synthesis Technique for Mono- and Mixed-Mode Symmetrical Filter
JF  - Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association . Vol. 1
Y1  - 2004
SN  - 1-580-53992-0
N1  - European Microwave Conference ; (34, 2004, Amsterdam) ; European Microwave Week ; (7, 2004, Amsterdam)
SP  - 309
EP  - 312
PB  - Horizon House Publ
CY  - London
ER  - 
TY  - JOUR
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
A1  - Lakemeyer, Gerhard
T1  - Reasoning with Qualitative Positional Information for Domestic Domains in the Situation Calculus
JF  - Journal of Intelligent & Robotic Systems
Y1  - 2011
SN  - 0921-0296
VL  - 63
IS  - 2
SP  - 273
EP  - 300
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Harzheim, Thomas
A1  - Mühmel, Marc
A1  - Heuermann, Holger
T1  - A SFCW harmonic radar system for maritime search and rescue using passive and active tags
JF  - International Journal of Microwave and Wireless Technologies
N2  - This paper introduces a new maritime search and rescue system based on S-band illumination harmonic radar (HR). Passive and active tags have been developed and tested while attached to life jackets and a small boat. In this demonstration test carried out on the Baltic Sea, the system was able to detect and range the active tags up to a distance of 5800 m using an illumination signal transmit-power of 100 W. Special attention is given to the development, performance, and conceptual differences between passive and active tags used in the system. Guidelines for achieving a high HR dynamic range, including a system components description, are given and a comparison with other HR systems is performed. System integration with a commercial maritime X-band navigation radar is shown to demonstrate a solution for rapid search and rescue response and quick localization.
KW  - Radar
KW  - microwave measurements
KW  - harmonic radar
KW  - harmonic radar tags
KW  - nonlinear VNA measurements
Y1  - 2021
U6  - https://doi.org/10.1017/S1759078721000520
VL  - 13
IS  - Special Issue 7
SP  - 691
EP  - 707
PB  - Cambridge University Press
CY  - Cambridge
ER  - 
TY  - JOUR
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
A1  - Lakemeyer, Gerhard
T1  - Caesar: an intelligent domestic service robot
JF  - Intelligent service robotics
N2  - In this paper we present CAESAR, an intelligent domestic service robot. In domestic settings for service robots complex tasks have to be accomplished. Those tasks benefit from deliberation, from robust action execution and from flexible methods for human–robot interaction that account for qualitative notions used in natural language as well as human fallibility. Our robot CAESAR deploys AI techniques on several levels of its system architecture. On the low-level side, system modules for localization or navigation make, for instance, use of path-planning methods, heuristic search, and Bayesian filters. For face recognition and human–machine interaction, random trees and well-known methods from natural language processing are deployed. For deliberation, we use the robot programming and plan language READYLOG, which was developed for the high-level control of agents and robots; it allows combining programming the behaviour using planning to find a course of action. READYLOG is a variant of the robot programming language Golog. We extended READYLOG to be able to cope with qualitative notions of space frequently used by humans, such as “near” and “far”. This facilitates human–robot interaction by bridging the gap between human natural language and the numerical values needed by the robot. Further, we use READYLOG to increase the flexible interpretation of human commands with decision-theoretic planning. We give an overview of the different methods deployed in CAESAR and show the applicability of a system equipped with these AI techniques in domestic service robotics
Y1  - 2012
U6  - https://doi.org/10.1007/s11370-012-0118-y
SN  - 1861-2776
N1  - Special Issue on Artificial Intelligence Techniques for Robotics: Sensing, Representation and Action, Part I
VL  - 5
IS  - 4
SP  - 259
EP  - 276
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Schiffer, Stefan
A1  - Lakemeyer, Gerhard
T1  - Embedding fuzzy controllers in golog  / Ferrein, Alexander ; Schiffer, Stefan ; Lakemeyer, Gerhard
JF  - IEEE International Conference on Fuzzy Systems, 2009. FUZZ-IEEE 2009
Y1  - 2009
SN  - 978-1-4244-3596-8
SP  - 894
EP  - 899
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Rumiantsev, A.
A1  - Schott, S.
T1  - Advanced on-wafer multiport calibration methods for mono- and mixed-mode device characterization
JF  - On wafer characterization : 63rd ARFTG conference digest, spring 2004, 11 June 2004, Fort Worth, TX / Automatic RF Techniques Group. [Conference chair: John Cable. Publication chair: J. G. Burns]
Y1  - 2004
SN  - 0-7803-8371-0
N1  - Microwave Theory and Techniques Society. ; Automatic RF Techniques Group ; ARFTG conference ; (63 : ; 2004.06.11 : ; Fort Worth, Tex.)
SP  - 91
EP  - 96
PB  - IEEE Operations Center
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Erkens, Holger
T1  - Blocking structures for mixed-mode systems. / Erkens, Holger ; Heuermann, Holger
JF  - Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association. Vol. 1
Y1  - 2004
SN  - 1-580-53992-0
N1  - European Microwave Conference ; (34, 2004, Amsterdam) ; European Microwave Week ; (7, 2004, Amsterdam)
SP  - 297
EP  - 300
PB  - Horizon House Publ.
CY  - London
ER  - 
TY  - JOUR
A1  - Ellerweg, Roland
A1  - Ritz, Thomas
A1  - Schuhmann, Stefan
T1  - Anwendungsentwicklung für iPhone und Windows Mobile : ein bisschen von allem
JF  - iX : Magazin für professionelle Informationstechnik
Y1  - 2009
SN  - 0935-9680 (Print)
SN  - 1612-1392 (Online)
IS  - 3
SP  - 132
EP  - 135
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - A Fast and Robust Procedure for the Determination of the Scattering Parameters for Network Analyzer Calibration
Y1  - 1992
N1  - Precision electromagnetic measurements : conference Paris, 9-12 June 1992 = Conférence sur les Mesures Electromagnétiques de Précision.
SP  - 373
EP  - 374
CY  - Paris
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Fritz, Christian
A1  - Lakemeyer, Gerhard
T1  - On-Line Decision-Theoretic Golog for Unpredictable Domains / Ferrein, Alexander ; Fritz, Christian ; Lakemeyer, Gerhard
JF  - KI 2004: Advances in Artificial Intelligence : 27th Annual German Conference on AI, KI 2004, Ulm, Germany, September 20-24, 2004. Proceedings
Y1  - 2004
N1  - Lecture Notes in Computer Science ; 3238
SP  - 322
EP  - 336
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Hillebrand, Jürgen
A1  - Sadeghfam, Arash
T1  - Novel Concept of a Digital SigmaDelta-PLL-Phase-Shift-Modulator / Hillebrand, Jürgen ; Sadeghfam, Arash ; Heuermann, Holger
Y1  - 2008
SN  - 978-3-8007-3086-5
N1  - Microwave Conference (GeMIC), 2008 German
SP  - 123
EP  - 126
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Steinbauer, Gerald
A1  - McPhillips, Graeme
A1  - Potgieter, Anet
T1  - Establishing the RoboCup Standard League in Africa - applying for the RoboCup Standard League with a German-Austrian-South African Research Project
Y1  - 2007
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - LNN (Line-Network-Network): Verfahren zur Kalibrierung von Netzwerkanalysatoren
JF  - Kleinheubacher Berichte : Vorträge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 36. 1992 (1992)
Y1  - 1992
SP  - 327
EP  - 335
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Ellerweg, Roland
T1  - Benutzerzentrierte Entwicklung mobiler Unternehmenssoftware, Teil 2 : die Iterative Entwicklung
JF  - dot.net-magazin
Y1  - 2008
SN  - 1619-7933
VL  - 2008
IS  - 12
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Fritz, Christian
A1  - Lakemeyer, Gerhard
T1  - Using Golog for Deliberation and Team Coordination in Robotic Soccer / Ferrein, Alexander ; Fritz, Christian ; Lakemeyer, Gerhard
JF  - Künstliche Intelligenz : KI. 19 (2005), H. 1
Y1  - 2005
SN  - 0933-1875
SP  - 24
EP  - 30
ER  - 
TY  - JOUR
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
T1  - ERIKA—Early Robotics Introduction at Kindergarten Age
JF  - Multimodal Technologies Interact
N2  - In this work, we report on our attempt to design and implement an early introduction to basic robotics principles for children at kindergarten age. One of the main challenges of this effort is to explain complex robotics contents in a way that pre-school children could follow the basic principles and ideas using examples from their world of experience. What sets apart our effort from other work is that part of the lecturing is actually done by a robot itself and that a quiz at the end of the lesson is done using robots as well. The humanoid robot Pepper from Softbank, which is a great platform for human–robot interaction experiments, was used to present a lecture on robotics by reading out the contents to the children making use of its speech synthesis capability. A quiz in a Runaround-game-show style after the lecture activated the children to recap the contents they acquired about how mobile robots work in principle. In this quiz, two LEGO Mindstorm EV3 robots were used to implement a strongly interactive scenario. Besides the thrill of being exposed to a mobile robot that would also react to the children, they were very excited and at the same time very concentrated. We got very positive feedback from the children as well as from their educators. To the best of our knowledge, this is one of only few attempts to use a robot like Pepper not as a tele-teaching tool, but as the teacher itself in order to engage pre-school children with complex robotics contents.
Y1  - 2018
U6  - https://doi.org/10.3390/mti2040064
SN  - 2414-4088
VL  - 2
IS  - 4
PB  - MDPI
CY  - Basel
ER  - 
TY  - JOUR
A1  - Holtrup, S.
A1  - Sadeghfam, Arash
A1  - Heuermann, Holger
A1  - Awakowicz, P.
T1  - Characterization and optimization technique for microwave-driven high-intensity discharge lamps using hot S-parameters
JF  - IEEE transactions on microwave theories and techniques
N2  - High-intensity discharge lamps can be driven by radio-frequency signals in the ISM frequency band at 2.45 GHz, using a matching network to transform the impedance of the plasma to the source impedance. To achieve an optimal operating condition, a good characterization of the lamp in terms of radio frequency equivalent circuits under operating conditions is necessary, enabling the design of an efficient matching network. This paper presents the characterization technique for such lamps and presents the design of the required matching network. For the characterization, a high-intensity discharge lamp was driven by a monofrequent large signal at 2.45 GHz, whereas a frequency sweep over 300 MHz was performed across this signal to measure so-called small-signal hot S-parameters using a vector network analyzer. These parameters are then used as an equivalent load in a circuit simulator to design an appropriate matching network. Using the measured data as a black-box model in the simulation results in a quick and efficient method to simulate and design efficient matching networks in spite of the complex plasma behavior. Furthermore, photometric analysis of high-intensity discharge lamps are carried out, comparing microwave operation to conventional operation.
Y1  - 2014
U6  - https://doi.org/10.1109/TMTT.2014.2342652
SN  - 0018-9480
VL  - 62
IS  - 10
SP  - 2471
EP  - 2480
PB  - IEEE
CY  - New York
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Mass Customized Production of Information Services - The combination of economies-of-scale with economies-of-scope
JF  - Media firms : structures, operations, and performance ; [World Media Economics Conference, 5th : 2002 : Turku, Finland] / ed. by Robert G. Picard
Y1  - 2002
SN  - 0-8058-4165-2
N1  - World Media Economics Conference (5, 2002, Turku)
PB  - Erlbaum
CY  - Mahwah, NJ [u.a.]
ER  - 
TY  - JOUR
A1  - Niemüller, Tim
A1  - Ferrein, Alexander
A1  - Beck, Daniel
A1  - Lakemeyer, Gerhard
T1  - Design Principles of the Component-Based Robot Software Framework Fawkes
JF  - Simulation, Modeling, and Programming for Autonomous Robots
Y1  - 2010
N1  - Lecture Notes in Computer Science ; 6472 ; Second International Conference, SIMPAR 2010, Darmstadt, Germany, November 15-18, 2010. Proceedings
SP  - 300
EP  - 311
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Steinbauer, Gerald
T1  - On the Way to High-Level Programming for Resource-Limited Embedded Systems with Golog
JF  - Simulation, Modeling, and Programming for Autonomous Robots
Y1  - 2010
N1  - Lecture Notes in Computer Science ; 6472 ; Second International Conference, SIMPAR 2010, Darmstadt, Germany, November 15-18, 2010. Proceedings
SP  - 229
EP  - 240
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
T1  - Robot controllers for highly dynamic environments with real-time constraints
JF  - Künstliche Intelligenz : KI. 24 (2010), H. 2
Y1  - 2010
SN  - 1610-1987
SP  - 175
EP  - 178
ER  - 
TY  - JOUR
A1  - Heinrichs, Uwe
A1  - Utting, Jane F.
A1  - Frauenrath, Tobias
A1  - Hezel, Fabian
A1  - Krombach, Gabriele A.
A1  - Hodenius, Michael A. J.
A1  - Kozerke, Sebastian
A1  - Niendorf, Thoralf
T1  - Myocardial T2 mapping free of distortion using susceptibility-weighted fast spin-echo imaging: A feasibility study at 1.5 T and 3.0 T
JF  - Magnetic Resonance in Medicine
N2  - This study demonstrates the feasibility of applying free-breathing, cardiac-gated, susceptibility-weighted fast spin-echo imaging together with black blood preparation and navigator-gated respiratory motion compensation for anatomically accurate T₂ mapping of the heart. First, T₂ maps are presented for oil phantoms without and with respiratory motion emulation (T₂ = (22.1 ± 1.7) ms at 1.5 T and T₂ = (22.65 ± 0.89) ms at 3.0 T). T₂ relaxometry of a ferrofluid revealed relaxivities of R2 = (477.9 ± 17) mM⁻¹s⁻¹ and R2 = (449.6 ± 13) mM⁻¹s⁻¹ for UFLARE and multiecho gradient-echo imaging at 1.5 T. For inferoseptal myocardial regions mean T₂ values of 29.9 ± 6.6 ms (1.5 T) and 22.3 ± 4.8 ms (3.0 T) were estimated. For posterior myocardial areas close to the vena cava T₂-values of 24.0 ± 6.4 ms (1.5 T) and 15.4 ± 1.8 ms (3.0 T) were observed. The merits and limitations of the proposed approach are discussed and its implications for cardiac and vascular T₂-mapping are considered.
Y1  - 2009
U6  - https://doi.org/10.1002/mrm.22054
SN  - 1522-2594
VL  - 62
IS  - 3
SP  - 822
EP  - 828
PB  - Wiley-Liss
CY  - New York
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Erkens, H.
T1  - EVM- und BER-optimierter differentieller Einseitenbandmodulator / Erkens, H., Heuermann, H.
JF  - German Microwave Conference - GeMiC 2005 - : conference proceedings ; University of Ulm, April 5 - 7, 2005 [Elektronische Ressource] / ed.: Wolfgang Menzel. IMA, VDE ...
Y1  - 2005
SN  - 3-00-015423-X
N1  - German Microwave Conference <2005, Ulm>
PB  - Univ
CY  - Ulm
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Ellerweg, Roland
T1  - Benutzerzentrierte Entwicklung mobiler Unternehmenssoftware, Teil 1
JF  - dot.NET-Magazin
Y1  - 2008
SN  - 1619-7933
VL  - 2008
IS  - 11
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Ibrahim, Irfan
T1  - Novel theory and architecture of a vector signal generator implemented with two PLLs / Ibrahim, Irfan ; Heuermann, Holger
JF  - European Conference on Wireless Technology, 2008. EuWiT 2008.
Y1  - 2008
SN  - 978-2-87487-008-8
SP  - 85
EP  - 88
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - Dual mode radio: A new tranceiver architecture for UWB and 60 GHz-applications
JF  - European Conference on Wireless Technology, 2008. EuWiT 2008.
Y1  - 2008
SN  - 978-2-87487-008-8
SP  - 147
EP  - 150
ER  - 
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  - Wolf, Martin R.
A1  - Armbruster, S.
A1  - Schlick, Christopher
A1  - Simon, S.
T1  - Marktübersicht Telekooperationssysteme / Wolf, M.; Armbruster, S.; Schlick, C.; Simon, S.
JF  - Elsa Insight (1997)
Y1  - 1997
SP  - 8
EP  - 9
PB  - -
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  - Wolf, Martin R.
A1  - Biesen, Ina van der
A1  - Greeb, Birgit
T1  - Mein Freund, die Uni
JF  - Die neue Hochschule : DNH : für anwendungsbezogene Wissenschaft und Kunst
Y1  - 2014
SN  - 0340-448X
N1  - Gedr. Ausgabe in der Bibliothek Eupener Str. vorhanden.
VL  - 2014
IS  - 2
SP  - 54
EP  - 56
PB  - HLB
CY  - Bonn
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  - Heuermann, Holger
T1  - Leerläufe als postulierte Kalibrierstandards fuer Messungen auf planaren Schaltungen
JF  - tm - Technisches Messen. 64. 1997 (1997), H. 6
Y1  - 1997
SP  - 230
EP  - 237
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  - Wolf, Martin R.
A1  - Foltz, Christian
A1  - Luczak, Holger
A1  - Eggersmann, M.
T1  - Entwurf eines Referenzszenarios zur Analyse und Gestaltung von Entwicklungsprozessen in der verfahrenstechnischen Industrie / Foltz, C.; Wolf, M.; Luczak, H.; Eggersmann, M.; Schneider, R.; Marquardt, W.
JF  - Komplexe Arbeitssysteme - Herausforderung für Analyse und Gestaltung : Bericht zum 46. Arbeitswissenschaftlichen Kongress der Gesellschaft für Arbeitswissenschaft vom 15. - 18. März 2000 ; [Technische Universität Berlin]
Y1  - 2000
SN  - 3-9806222-5-8
N1  - Arbeitswissenschaftlicher Kongress <46, 2000, Berlin>
SP  - 545
EP  - 548
PB  - GfA-Press
CY  - Dortmund
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  - Wolf, Martin R.
A1  - Altgen, Jannik
T1  - IT Service Management in der Region Aachen : White Paper
Y1  - 2013
SP  - 1
EP  - 13
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  - Heuermann, Holger
A1  - Graf, W.
T1  - Direkte on-wafer-Messung des Wellenwiderstandes einer Mikrostreifenleitung
JF  - Kleinheubacher Berichte : Vorträge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 41. 1998 (1998)
Y1  - 1998
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  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Graf, W.
T1  - Direkte Messung der Dispersion des Wellenwiderstandes einer Mikrostreifenleitung
JF  - Kleinheubacher Berichte : Vorträge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 40. 1997 (1997)
Y1  - 1997
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Sadeghfam, Arash
T1  - Electrically tunable bandpass filter with integrated carrier suppression for UHF RFID systems / Sadeghfam, Arash ; Heuermann, Holger
JF  - European Conference on Wireless Technology, 2008. EuWiT 2008.
Y1  - 2008
SN  - 978-2-87487-008-8
SP  - 306
EP  - 309
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - Calibration of a Network Analyzer Without a Thru Connection for Nonlinear and Multiport Measurements
JF  - IEEE Transactions on Microwave Theory and Techniques. 56 (2008), H. 11, 1
Y1  - 2008
SN  - 0018-9480
SP  - 2505
EP  - 2510
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Thalayasingam, K.
T1  - Novel vector non-linear measurement system for intermodulation measurements  / Thalayasingam, K.; Heuermann, H.
JF  - European Microwave Conference, 2009 : EuMC 2009 ; Sept. 29, 2009 - Oct. 1, 2009, Rome, Italy ; part of European Microwave Week (EuMW) / sponsored by EuMA, European Microwave Association ... Endorsed by IEEE
Y1  - 2009
SN  - 978-1-4244-4748-0
N1  - European Microwave Conference ; (39 : ; 2009.09.29-10.01 : ; Rome)
SP  - 926
EP  - 929
PB  - IEEE
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Stender, Michael
T1  - Modeling of B2B mobile commerce processes
JF  - International Journal of Production Economics
Y1  - 2006
U6  - https://doi.org/10.1016/j.ijpe.2005.05.017
SN  - 0925-5273
VL  - 101
IS  - 1
SP  - 128
EP  - 139
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
A1  - Foltz, Christian
A1  - Schlick, Christopher
A1  - Luczak, Holger
T1  - Groupware support for chemical process design / Wolf, M.; Foltz, C.; Schlick, C.; Luczak, H.
JF  - Human-computer interaction : proceedings of HCI International '99 (the 8th International Conference on Human-Computer Interaction), Munich, Germany, August 22 - 26, 1999
Y1  - 1999
N1  - HCI - International Conference on Human-Computer Interaction ; 8 (Munich, Germany) : 1999.08.22-26 ; in 2 Bänden
SP  - 343
EP  - 347
PB  - Erlbaum
CY  - Mahwah, NJ
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
A1  - Simon, S.
A1  - Schlick, Christopher
T1  - Computergestützte Kooperation - Eine Seifenblase? / Wolf, M.; Simon, S.; Schlick, C.
JF  - Rechnergestützte Kooperation in Verwaltungen und großen Unternehmen : Tagungsband zum Workshop der GI-Gachgruppe / Peter Mambrey ... ( Hrsg.)
Y1  - 1997
SP  - 220
EP  - 234
PB  - Univ., Fachbereich Mathematik u. Informatik
CY  - Essen
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Hoof, Antonius J. M.
T1  - Personalisierung von Content basierten Services - Produktion von personalisierten Informationsdienstleistungen
JF  - Content Management : digitale Inhalte als Bausteine einer vernetzten Welt ; 18. Juni 2002, Stuttgart / Innovationsforum. Veranst. Verein zur Förderung Produktionstechnischer Forschung e.V., Stuttgart. [Fraunhofer-Institut Arbeitswirtschaft und Organisatio
Y1  - 2002
SN  - 3-8167-6155-0
SP  - 91
EP  - 106
PB  - Fraunhofer-IRB-Verl.
CY  - Stuttgart
ER  - 
TY  - JOUR
A1  - Fuchs, Britta
A1  - Ritz, Thomas
T1  - Absatzkanäle kaum verknüpft
JF  - IT-Mittelstand : IT-Business im Mittelstand
Y1  - 2011
VL  - 2011
IS  - 9
SP  - 16
PB  - Medienhaus-Verlag
CY  - Bergisch-Gladbach
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Sadeghfam, Arash
A1  - Boehm, H.
T1  - Ultra Compact Multi-Mode Filter with Novel Rat-Race Inductor. Sadeghfam, Arash; Heuermann, Holger; Boehm, H.
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. 2
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  - Schiffer, Stefan
A1  - Ferrein, Alexander
A1  - Lakemeyer, Gerhard
T1  - Proceedings of the Fourth International Conference on Intelligent Robotics and Applications (ICIRA 2011)
JF  - Proceedings of the Fourth International Conference on Intelligent Robotics and Applications (ICIRA 2011)
Y1  - 2010
SP  - 1
EP  - 10
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
A1  - Pisarczyk, Rafael
A1  - Sachtleben, Johanna
A1  - Leßenich, Nina
T1  - Usability Engineering maßgeschneidert : Modellbaukasten zur Entwicklung gebrauchstauglicher mobiler Software
JF  - Wissenschaft trifft Praxis
Y1  - 2014
SN  - 2198-8544 (Print)
SN  - 2198-9362 (Online)
N1  - Der Link führt zum vollständigen Heft, der Artikel beginnt auf S.79.
VL  - 1
IS  - 1
SP  - 79
EP  - 88
PB  - Begleitforschung Mittelstand-Digital c/o WIK-Consult GmbH
CY  - Bad Honnef
ER  - 
TY  - JOUR
A1  - Wallenborn, Ramona
A1  - Ritz, Thomas
T1  - Mobilität miteinander teilen : städtisches eCarsharing in einer vernetzten Gesellschaft ; [vernetztes Fahren von morgen]
JF  - Neue Mobilität : das Magazin vom Bundesverband eMobilität
Y1  - 2014
SN  - 2191-5636
VL  - 5
IS  - 14 (Herbstausg.)
SP  - 92
EP  - 95
PB  - Bundesverband eMobilität BEM
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - LNN( Line-Network-Network): The In-Fixture Calibration Procedure
Y1  - 1993
N1  - XXIVth General Assembly of the International URSI, Kyoto
SP  - 149
EP  - 149
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - A Generalization of the Txx Network Analyzer Self-Calibration Procedure
JF  - Conference proceedings : monday 24th to thursday 27th august 1992, Helsinki University of Technology, Espoo, Finland ; [the international conference and exhibition designed for the Microwave Community]. Vol. 2
Y1  - 1992
SN  - 0-946821-77-1
N1  - European Microwave Conference <22, 1992, Espoo> ; Teknillinen Korkeakoulu <Helsinki>
SP  - 907
EP  - 912
PB  - Microwave Exhibitions and Publishers
CY  - Tunbridge Wells
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, B.
T1  - 15-term self-calibration methods for the error-correction of on-wafer measurements
JF  - IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 46 (1997), H. 5
Y1  - 1997
SN  - 0018-9456
SP  - 1105
EP  - 1110
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
A1  - Luczak, Holger
A1  - Springer, J.
A1  - Simon, S.
ED  - Miyamoto, Hiroyuki
T1  - The role of metaphors in computer supported cooperative work
JF  - Proceedings of WWDU '97 Tokyo, Fifth International Scientific Conference on Work with Display Units : November 3 - 5, 1997, Tokyo /
Y1  - 1997
N1  - International Scientific Conference on Work with Display Units ; International Scientific Conference on Work with Display Units ; (5 ; 1997.11.03-05 ; Tokyo)
SP  - 191
EP  - 192
PB  - -
CY  - Tokyo
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
T1  - Planwirtschaft
JF  - Linux Magazin (2004)
Y1  - 2004
SN  - 1432-640X
SP  - 50
EP  - 53
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Meyer, Thomas
T1  - A Brief Overview of Artificial Intelligence in South Africa
JF  - AI Magazine
N2  - South Africa in recent years is the establishment of a number of research hubs involved in AI activities ranging from mobile robotics and computational intelligence, to knowledge representation and reasoning, and human language technologies. In this survey we take the reader through a quick tour of the research being conducted at these hubs, and touch on an initiative to maintain and extend the current level of interest in AI research in the country.
Y1  - 2012
U6  - https://doi.org/10.1609/aimag.v33i1.2357
SN  - 0738-4602
VL  - 33
IS  - 1
SP  - 99
EP  - 101
PB  - AAAI
CY  - Menlo Park
ER  - 
TY  - JOUR
A1  - Steinbauer, Gerald
A1  - Ferrein, Alexander
T1  - 20 Years of RoboCup
JF  - KI - Künstliche Intelligenz
Y1  - 2016
U6  - https://doi.org/10.1007/s13218-016-0442-z
SN  - 1610-1987
VL  - 30
IS  - 3-4
SP  - 221
EP  - 224
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
A1  - Foltz, Christian
A1  - Schlick, Christopher
A1  - Luczak, Holger
T1  - Entwicklung und Evaluation eines groupware-basierten Unterstützungssystems für verfahrenstechnische Entwickler / Wolf, M.; Foltz, C.; Schlick, C.; Luczak, H.
JF  - Komplexe Arbeitssysteme - Herausforderung für Analyse und Gestaltung : Bericht zum 46. Arbeitswissenschaftlichen Kongress der Gesellschaft für Arbeitswissenschaft vom 15. - 18. März 2000 ; [Technische Universität Berlin]
Y1  - 2000
SN  - 3-9806222-5-8
N1  - Arbeitswissenschaftlicher Kongress <46, 2000, Berlin>
SP  - 95
EP  - 98
PB  - GfA-Press
CY  - Dortmund
ER  - 
TY  - JOUR
A1  - Ferrein, Alexander
A1  - Fritz, Christian
A1  - Lakemeyer, Gerhard
T1  - Extending DTGOLOG with Options / Ferrein, Alexander ; Fritz, Christian ; Lakemeyer, Gerhard
JF  - IJCAI-03, Proceedings of the Eighteenth International Joint Conference on Artificial Intelligence, Acapulco, Mexico, August 9-15, 2003
Y1  - 2003
SP  - 1391
EP  - 1393
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - Calibration procedures with series impedances and unknown lines simplify on-wafer measurements
JF  - IEEE transactions on microwave theory and techniques : MTT ; a publication of the IEEE Microwave Theory and Techniques Society. 47 (1999), H. 1
Y1  - 1999
SN  - 0018-9480
SP  - 1
EP  - 5
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, B.
T1  - Error corrected impedance measurements with a network analyzer
JF  - IEEE transactions on instrumentation and measurement : IM / Institute of Electrical and Electronics Engineers, Instrumentation and Measurement Group. 44 (1995), H. 2
Y1  - 1995
SN  - 0018-9456
SP  - 295
EP  - 299
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
A1  - Simon, S.
A1  - Schlick, Christopher
T1  - Qualitative and Quantitative Analysis of Cooperation / Wolf, M. ; Simon, S. ; Schlick, C.
JF  - Proceedings : May 26 - 29, 1998, Cannes (France) = Actes : 26 - 29 mai 1998 / INRIA, Institut National de Recherche en Informatique et en Automatique, Unité de recherche ... F. Darses ..., eds
Y1  - 1998
N1  - COOP ; Institut National de Recherche en Informatique et en Automatique ; Centre ; (Sophia Antipolis) ; International Conference on the Design of Cooperative Systems ; (3 ; 1998.05.26-29 ; Cannes) ; Conference Internationale sur la Conception de Systèmes Coopératifs ; (3 ; 1998.05.26-29 ; Cannes) ; COOP ; (3 ; 1998.05.26-29 ; Cannes)
SP  - 1
EP  - 5
PB  - -
CY  - Cannes
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Personalized Information Services: Production and Distribution of these Services employing Mass-Customization
Y1  - 2002
N1  - International Congress on Mass Media and Communications in the e-society of the 21st Century, Moskau, 17.-19.10.2002
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - Robuster Algorithmus zur Streuparameterbestimmung für systemfehlerkorrigierte Netzwerkanalysatoren
JF  - Kleinheubacher Berichte : Vorträge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 35. 1991 (1991)
Y1  - 1991
SP  - 555
EP  - 556
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
T1  - Von Security Awareness zum Secure Behaviour
JF  - Hakin9 Extra – IT-Forensik
N2  - Security Awareness ist derzeit ein viel diskutiertes Thema. Es reicht nicht, einfach nur ein paar technische Systeme (z.B. Firewalls) zu installieren, um ein angemessenes Schutzniveau zu erzielen. Neben einer guten Organisation von IT Security ist es auch notwendig, den Mitarbeiter einzubinden. Der vielzitierte "Faktor Mensch" ist derjenige, der die Technik korrekt anwenden muss und der durch falsches Verhalten technische und organisatorische Schutzmaßnahmen aushebeln kann. Deshalb reicht es nicht aus, wenn sich der Mitarbeiter der Gefahren bewusst ("aware") ist, er muss auch dementsprechend "sicher" handeln.
Y1  - 2012
SN  - 1733-7186
VL  - 2012
IS  - 5
SP  - 18
EP  - 19
PB  - Software Wydawnictwo
CY  - Warszawa
ER  - 
TY  - JOUR
A1  - Kob, Malte
A1  - Frauenrath, Tobias
T1  - A system for parallel measurement of glottis opening and larynx position
JF  - Biomedical Signal Processing and Control
N2  - The simultaneous assessment of glottal dynamics and larynx position can be beneficial for the diagnosis of disordered voice or speech production and swallowing. Up to now, methods either concentrate on assessment of the glottis opening using optical, acoustical or electrical (electroglottography, EGG) methods, or on visualisation of the larynx position using ultrasound, computer tomography or magnetic resonance imaging techniques.

The method presented here makes use of a time-multiplex measurement approach of space-resolved transfer impedances through the larynx. The fast sequence of measurements allows a quasi simultaneous assessment of both larynx position and EGG signal using up to 32 transmit–receive signal paths. The system assesses the dynamic opening status of the glottis as well as the vertical and back/forward motion of the larynx.

Two electrode-arrays are used for the measurement of the electrical transfer impedance through the neck in different directions. From the acquired data the global and individual conductivity is calculated as well as a 2D point spatial representation of the minimum impedance.

The position information is shown together with classical EGG signals allowing a synchronous visual assessment of glottal area and larynx position. A first application to singing voice analysis is presented that indicate a high potential of the method for use as a non-invasive tool in the diagnosis of voice, speech, and swallowing disorders.
KW  - EGG
KW  - Transfer impedance
KW  - Tomography
KW  - Larynx position
KW  - Voice assessment
Y1  - 2009
U6  - https://doi.org/10.1016/j.bspc.2009.03.004
SN  - 1746-8108
VL  - 4
IS  - 3
SP  - 221
EP  - 228
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
A1  - Foltz, Christian
A1  - Killich, Stephan
A1  - Schmidt, Ludger
T1  - Task and Information Modeling for Cooperative Work / Foltz, Christian ; Killich, Stephan ; Wolf, Martin ; Schmidt, Ludger ; Luczak, Holger
JF  - Systems, social and internationalization design aspects of human-computer interaction / ed. by Michael J. Smith, Gavriel Salvendy  Vol. 2
Y1  - 2001
SN  - 0-8058-3608-X
N1  - International Conference on Human Computer Interaction 9, 2001, New Orleans, La.
SP  - 172
EP  - 176
PB  - -
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Sadeghfam, Arash
T1  - Novel balanced inductor for compact differential systems / Sadeghfam, Arash; Heuermann, Holger
JF  - Conference proceedings : Tuesday 12th, Wednesday 13th and Thursday 14th October, [RAI International Exhibition and Congress Centre, Amsterdam ; part of European Microwave Week 2004] / EuMA, European Microwave Association
Y1  - 2004
SN  - 1-580-53992-0
N1  - European Microwave Conference ; (34, 2004, Amsterdam) ; European Microwave Week ; (7, 2004, Amsterdam)
SP  - 709
EP  - 712
PB  - Horizon House Publ.
CY  - London
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - Error Corrected Impedance Measurements with a Network Analyzer
Y1  - 1994
N1  - 1994 Conference on Precision Electromagnetic Measurements digest : 27 June - 1 July 1994, Boulder, Colorado, USA / Organized by National Institute of Standards and Technology. Ed. by Edie DeWeese
SP  - 125
EP  - 126
ER  - 
TY  - JOUR
A1  - Niemüller, Tim
A1  - Ferrein, Alexander
A1  - Eckel, Gerhard
A1  - Pirro, David
A1  - Podbregar, Patrick
A1  - Kellner, Tobias
A1  - Rath, Christoph
A1  - Steinbauer, Gerald
T1  - Providing Ground-truth Data for the Nao Robot Platform
JF  - RoboCup 2010: Robot Soccer World Cup XIV
Y1  - 2011
SN  - 978-3-642-20217-9
N1  - Lecture Notes in Computer Science ; 6556
SP  - 133
EP  - 144
PB  - Springer
CY  - Berlin
ER  - 
TY  - JOUR
A1  - Droop, Philipp
A1  - Chen, Shaohuang
A1  - Radford, Melissa J.
A1  - Paulßen, Elisabeth
A1  - Gates, Byron D.
A1  - Reilly, Raymond M.
A1  - Radchenko, Valery
A1  - Hoehr, Cornelia
T1  - Synthesis of 197m/gHg labelled gold nanoparticles for targeted radionuclide therapy
JF  - Radiochimica Acta
N2  - Meitner-Auger-electron emitters have a promising potential for targeted radionuclide therapy of cancer because of their short range and the high linear energy transfer of Meitner-Auger-electrons (MAE). One promising MAE candidate is 197m/gHg with its half-life of 23.8 h and 64.1 h, respectively, and high MAE yield. Gold nanoparticles (AuNPs) that are labelled with 197m/gHg could be a helpful tool for radiation treatment of glioblastoma multiforme when infused into the surgical cavity after resection to prevent recurrence. To produce such AuNPs, 197m/gHg was embedded into pristine AuNPs. Two different syntheses were tested starting from irradiated gold containing trace amounts of 197m/gHg. When sodium citrate was used as reducing agent, no 197m/gHg labelled AuNPs were formed, but with tannic acid, 197m/gHg labeled AuNPs were produced. The method was optimized by neutralizing the pH (pH = 7) of the Au/197m/gHg solution, which led to labelled AuNPs with a size of 12.3 ± 2.0 nm as measured by transmission electron microscopy. The labelled AuNPs had a concentration of 50 μg (gold)/mL with an activity of 151 ± 93 kBq/mL (197gHg, time corrected to the end of bombardment).
KW  - 197m/gHg
KW  - Gold nanoparticle (AuNP)
KW  - Meitner-Auger-electron (MAE)
KW  - Targeted radionuclide therapy (TRT)
Y1  - 2023
U6  - https://doi.org/10.1515/ract-2023-0144
SN  - 2193-3405
VL  - 111
IS  - 10
SP  - 773
EP  - 779
PB  - De Gruyter
CY  - Berlin [u.a.]
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
T1  - Selbstkalibrierverfahren zur Systemfehlerkorrektur von Streuparametermessungen auf Halbleitersubstraten
JF  - Mikrowellen und Optronik : Kongreßunterlagen = Microwaves and optronics / MIOP '95, 8. Kongreßmesse für Hochfrequenztechnik, Messehalle Sindelfingen, 30. Mai - 1. Juni 1995. [Hrsg.: Network GmbH]
Y1  - 1995
SN  - 3-924651-45-0
N1  - MIOP ; (8, 1995, Sindelfingen)
SP  - 23
EP  - 29
CY  - Hagenburg
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Graf, W.
T1  - Vergleich mehrerer Naeherungsverfahren zur Berechnung des Wellenwiderstandes von Mikrostreifenleitungen mit experimentellen Ergebnissen
JF  - Kleinheubacher Berichte : Vorträge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 39. 1996 (1996)
Y1  - 1996
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Schiek, Burkhard
T1  - Sichere on-wafer-Streuparameter-Messungen mit Selbstkalibrierverfahren
JF  - Kleinheubacher Berichte : Vorträge und Berichte der gemeinsamen Tagung des U.R.S.I.-Landesausschusses in der Bundesrepublik Deutschland / Hrsg.: Deutsche Telekom AG. 38. 1994 (1994)
Y1  - 1994
SP  - 611
EP  - 622
ER  - 
TY  - JOUR
A1  - Heuermann, Holger
A1  - Emmrich, Thomas
A1  - Bongartz, Simon
T1  - Microwave spark plug to support ignitions with high compression ratios
JF  - IEEE Transactions on Plasma Science
N2  - Upcoming gasoline engines should run with a larger number of fuels beginning from petrol over methanol up to gas by a wide range of compression ratios and a homogeneous charge. In this article, the microwave (MW) spark plug, based on a high-speed frequency hopping system, is introduced as a solution, which can support a nitrogen compression ratio up to 1:39 in a chamber and more. First, an overview of the high-speed frequency hopping MW ignition and operation system as well as the large number of applications are presented. Both gives an understanding of this new base technology for MW plasma generation. Focus of the theoretical part is the explanation of the internal construction of the spark plug, on the achievable of the high voltage generation as well as the high efficiency to hold the plasma. In detail, the development process starting with circuit simulations and ending with the numerical multiphysics field simulations is described. The concept is evaluated with a reference prototype covering the frequency range between 2.40 and 2.48 GHz and working over a large power range from 20 to 200 W. A larger number of different measurements starting by vector hot-S11 measurements and ending by combined working scenarios out of hot temperature, high pressure and charge motion are winding up the article. The limits for the successful pressure tests were given by the pressure chamber. Pressures ranged from 1 to 39 bar and charge motion up to 25 m/s as well as temperatures from 30◦ to 125◦.
KW  - Automotive application
KW  - ignition
KW  - microplasma
KW  - microwave (MW) plasma
KW  - plasma jet
Y1  - 2022
U6  - https://doi.org/10.1109/TPS.2022.3183690
SN  - 1939-9375
IS  - Early Access
SP  - 1
EP  - 6
PB  - IEEE
ER  - 
TY  - JOUR
A1  - Wolf, Martin R.
A1  - Armbruster, S.
A1  - Schlick, Christopher
A1  - Simon, S.
T1  - Marktübersicht Telekooperationssysteme - Das IAW stellt im Internet umfangreiche Informationen über Telekooperationssysteme zur Verfügung / Wolf, M. ; Armbruster, S. ; Schlick, C. ; Simon, S.
JF  - FIR + IAW Mitteilungen. 29 (1997), H. 1
Y1  - 1997
SP  - 11
EP  - 12
PB  - -
ER  - 
TY  - JOUR
A1  - Ritz, Thomas
T1  - Personalized information services : an electronic information commodity and its production
JF  - International Journal of E-Business Strategy Management
Y1  - 2000
SN  - 1467-0305
VL  - 2
IS  - 2
ER  -