TY - JOUR
A1 - Prume, Klaus
A1 - Raeder, H.
A1 - Tyholdt, F.
A1 - Booij, W. E.
T1 - Taking piezoelectric microsystems from the laboratory to production / Raeder, H. ; Tyholdt, F. ; Booij, W. ; Calame, F. ; Ostbo, N. P. ; Bredesen, R. ; Prume, K. ; Rijnders, G. ; Muralt, P.
JF - Journal of Electroceramics. 19 (2007), H. 4
Y1 - 2007
SN - 1385-3449
SP - 357
EP - 362
ER -
TY - JOUR
A1 - Wolf, Martin
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 - 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 - JOUR
A1 - Ferrein, Alexander
A1 - Niemüller, Tim
A1 - Steinbauer, Gerald
T1 - Team Zadeat 2010 : application for participation
Y1 - 2010
ER -
TY - JOUR
A1 - Siepmann, Thomas
A1 - Schuh, G.
A1 - Keil, M.
T1 - TELEflow – Eine Methode zum Reengineering von Prozessen in Wertschöpfungsnetzwerken / Schuh, G.; Siepmann, Th.; Keil, M.
JF - Industrie-Management : Zeitschrift für industrielle Geschäftsprozesse (1997)
Y1 - 1997
SP - 21
EP - 24
ER -
TY - JOUR
A1 - Samm, Doris
A1 - Bosetti, P.-C.
T1 - Testmessungen an einem grossflaechigen (Durchmesser 35 cm) Photomultiplier Test measurements of a large-area (diameter 35 cm) photomultiplier / Bosetti, P.-C.; ... Samm, D. [u.a.]
JF - Verhandlungen der Deutschen Physikalischen Gesellschaft. 25 (1990), H. 1
Y1 - 1990
N1 - Fruehjahrstagung des Fachausschusses Teilchenphysik der Deutschen Physikalischen Gesellschaft e.V. (DPG), Hamburg (Germany), 21-24 Mar 1990
SP - 33
EP - 33
ER -
TY - JOUR
A1 - Mühl, Thomas
A1 - Obolenski, B.
T1 - Textilien und elektromagnetische Strahlung
JF - Melliand-Textilberichte. 85 (2004), H. 3
Y1 - 2004
SN - 0341-0781
SP - 190
EP - 192
ER -
TY - JOUR
A1 - Scholl, Ingrid
A1 - Pelikan, Erich
A1 - Repges, Rudolf
A1 - Tolxdorff, Thomas
T1 - Texture-based feature extraction using the Wavelet transform on x rays.
JF - Medical Imaging 1996: Image Processing
Y1 - 1996
N1 - Proceedings of SPIE 2710
SP - 668
EP - 678
ER -
TY - JOUR
A1 - Bragard, Michael
A1 - Soltau, N.
A1 - Thomas, S.
A1 - De Doncker, R. W.
T1 - The balance of renewable sources and user demands in grids : power electronics for modular battery energy storage systems
JF - IEEE transactions on power electronics
N2 - The continuously growing amount of renewable sources starts compromising the stability of electrical grids. Contradictory to fossil fuel power plants, energy production of wind and photovoltaic (PV) energy is fluctuating. Although predictions have significantly improved, an outage of multi-MW offshore wind farms poses a challenging problem. One solution could be the integration of storage systems in the grid. After a short overview, this paper focuses on two exemplary battery storage systems, including the required power electronics. The grid integration, as well as the optimal usage of volatile energy reserves, is presented for a 5- kW PV system for home application, as well as for a 100- MW medium-voltage system, intended for wind farm usage. The efficiency and cost of topologies are investigated as a key parameter for large-scale integration of renewable power at medium- and low-voltage.
Y1 - 2010
U6 - https://doi.org/10.1109/TPEL.2010.2085455
SN - 0885-8993
VL - 25
IS - 12
SP - 3049
EP - 3056
PB - IEEE
CY - New York
ER -
TY - JOUR
A1 - Hofmann, Till
A1 - Limpert, Nicolas
A1 - Mataré, Victor
A1 - Schönitz, Sebastian
A1 - Niemueller, Tim
A1 - Ferrein, Alexander
A1 - Lakemeyer, Gerhard
T1 - The Carologistics RoboCup Logistics Team 2018
N2 - The Carologistics team participates in the RoboCup Logistics League for the seventh year. The RCLL requires precise vision,
manipulation and path planning, as well as complex high-level decision
making and multi-robot coordination. We outline our approach with an
emphasis on recent modifications to those components.
The team members in 2018 are David Bosen, Christoph Gollok, Mostafa
Gomaa, Daniel Habering, Till Hofmann, Nicolas Limpert, Sebastian Schönitz,
Morian Sonnet, Carsten Stoffels, and Tarik Viehmann.
This paper is based on the last year’s team description.
Y1 - 2018
ER -
TY - JOUR
A1 - Schmidt, K.
A1 - Forkmann, K.
A1 - Sinke, C.
A1 - Gratz, M.
A1 - Bitz, Andreas
A1 - Bingel, U.
T1 - The differential effect of trigeminal vs. peripheral pain stimulation on visual processing and memory encoding is influenced by pain-related fear
JF - NeuroImage
N2 - Compared to peripheral pain, trigeminal pain elicits higher levels of fear, which is assumed to enhance the interruptive effects of pain on concomitant cognitive processes. In this fMRI study we examined the behavioral and neural effects of trigeminal (forehead) and peripheral (hand) pain on visual processing and memory encoding. Cerebral activity was measured in 23 healthy subjects performing a visual categorization task that was immediately followed by a surprise recognition task. During the categorization task subjects received concomitant noxious electrical stimulation on the forehead or hand. Our data show that fear ratings were significantly higher for trigeminal pain. Categorization and recognition performance did not differ between pictures that were presented with trigeminal and peripheral pain. However, object categorization in the presence of trigeminal pain was associated with stronger activity in task-relevant visual areas (lateral occipital complex, LOC), memory encoding areas (hippocampus and parahippocampus) and areas implicated in emotional processing (amygdala) compared to peripheral pain. Further, individual differences in neural activation between the trigeminal and the peripheral condition were positively related to differences in fear ratings between both conditions. Functional connectivity between amygdala and LOC was increased during trigeminal compared to peripheral painful stimulation. Fear-driven compensatory resource activation seems to be enhanced for trigeminal stimuli, presumably due to their exceptional biological relevance.
Y1 - 2016
U6 - https://doi.org/10.1016/j.neuroimage.2016.03.026
SN - 1053-8119
VL - 134
SP - 386
EP - 395
PB - Elsevier
CY - Amsterdam
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 - Köllensperger, P.
A1 - Bragard, Michael
A1 - Plum, T.
A1 - De Doncker, R. W.
T1 - The dual GCT : new high-power device using optimized GCT technology
JF - IEEE transactions on industry applications
Y1 - 2009
U6 - https://doi.org/10.1109/TIA.2009.2027364
SN - 0093-9994
VL - 45
IS - 5
SP - 1754
EP - 1762
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 - Hagemann, Hans-Jürgen
A1 - Stumpe, R.
A1 - Wagner, D.
A1 - Bäuerle, D.
T1 - The influence of contact effects on the dielectric behavior of diffuse phase transitions. Stumpe, R.; Wagner, D.; Bäuerle, D.; Hagemann, H. J.
JF - Ferroelectrics : the international journal devoted to the theoretical, experimental, and applied aspects of ferroelectrics and related materials / Letters section. 4 (1985)
Y1 - 1985
SN - 0731-5171
SP - 143
EP - 147
ER -
TY - JOUR
A1 - Bragard, Michael
A1 - Conrad, M.
A1 - van Hoek, H.
A1 - De Doncker, R. W.
T1 - The integrated emitter turn-off thyristor (IETO) : an innovative thyristor-based high power semiconductor device using MOS assisted turn-off
JF - IEEE transactions on industry applications
Y1 - 2011
U6 - https://doi.org/10.1109/TIA.2011.2161432
SN - 0093-9994
VL - 47
IS - 5
SP - 2175
EP - 2182
PB - IEEE
CY - New York
ER -
TY - JOUR
A1 - Ferrein, Alexander
A1 - Steinbauer, Gerald
T1 - The Interplay of Aldebaran and RoboCup
JF - KI - Künstliche Intelligenz
Y1 - 2016
U6 - https://doi.org/10.1007/s13218-016-0440-1
SN - 1610-1987
VL - 30
IS - 3-4
SP - 325
EP - 326
PB - Springer
CY - Berlin
ER -
TY - JOUR
A1 - Faßbender, Heinz
A1 - Bühler, Gerhard
T1 - The join of a geographical situation display system and a platform independent C2 information system
JF - Proceedings of the 2000 Command and Control Research and Technology Symposium, Juni 2000, Monterey, USA
Y1 - 2000
SP - 1
EP - 7
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Lade, H.
A1 - Warnier, J.
A1 - Wiechert, D. U.
T1 - The performance of Depressed-Cladding Single-Mode Fibres with Different b/a Ratios. Hagemann, H.-J.; Lade, H.; Warnier, J.; Wiechert, D. U.
JF - Journal of Lightwave Technology (J-LT) / Institute of Electrical and Electronics Engineers (IEEE). 9 (1991), H. 6
Y1 - 1991
SN - 0733-8724
SP - 689
EP - 694
ER -
TY - JOUR
A1 - Wolf, Martin
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 - Limpert, Nicolas
A1 - Wiesen, Patrick
A1 - Ferrein, Alexander
A1 - Kallweit, Stephan
A1 - Schiffer, Stefan
T1 - The ROSIN Project and its Outreach to South Africa
JF - R&D Journal
Y1 - 2019
VL - 35
SP - 1
EP - 6
ER -
TY - JOUR
A1 - Wolf, Martin
A1 - Schlick, Christopher
A1 - Springer, J.
ED - Miyamoto, Hiroyuki
T1 - The use of implicit communication mechanisms in desktop-teleconferencing-systems
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 - 193
EP - 194
PB - -
CY - Tokyo
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Hero, A.
A1 - Gonser, U.
T1 - The valence change of Fe in BaTiO3 studied by Mößbauer effect and gravimetry. Hagemann, H. J.; Hero, A.; Gonser, U.
JF - Physica Status Solidi (A) - Applied Research. 61 (1980)
Y1 - 1980
SN - 0031-8965
SP - 63
EP - 72
ER -
TY - JOUR
A1 - Schopp, Christoph
A1 - Britun, Nikolay
A1 - Vorac, Jan
A1 - Synek, Petr
A1 - Snyders, Rony
A1 - Heuermann, Holger
T1 - Thermal and Optical Study on the Frequency Dependence of an Atmospheric Microwave Argon Plasma Jet
JF - IEEE Transactions on Plasma Science
Y1 - 2019
SN - 1939-9375
VL - 47
IS - 7
SP - 3176
EP - 3181
PB - IEEE
CY - New York
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Bachmann, P. K.
A1 - Lade, H.
A1 - Leers, D.
T1 - Thermal properties of C/H-, C/H/O-, C/H/N- and C/H/X-grown polycrystalline CVD diamond. P. K. Bachmann, H. J. Hagemann, H. Lade, ...
JF - Diamond and Related Material. Vol 4. (1995), H. Issue 5-6
Y1 - 1995
N1 - abstract online:
SP - 820
EP - 826
PB - Elsevier Science
CY - New York, NY [u.a.]
ER -
TY - JOUR
A1 - Köhler, Klemens
A1 - Röpke, René
A1 - Wolf, Martin
T1 - Through a mirror darkly – On the obscurity of teaching goals in game-based learning in IT security
JF - ISAGA 2019: Simulation Gaming Through Times and Disciplines
N2 - Teachers and instructors use very specific language communicating teaching goals. The most widely used frameworks of common reference are the Bloom’s Taxonomy and the Revised Bloom’s Taxonomy. The latter provides distinction of 209 different teaching goals which are connected to methods. In Competence Developing Games (CDGs - serious games to convey knowledge) and in IT security education, a two- or three level typology exists, reducing possible learning outcomes to awareness, training, and education. This study explores whether this much simpler framework succeeds in achieving the same range of learning outcomes. Method wise a keyword analysis was conducted. The results were threefold: 1. The words used to describe teaching goals in CDGs on IT security education do not reflect the whole range of learning outcomes. 2. The word choice is nevertheless different from common language, indicating an intentional use of language. 3. IT security CDGs use different sets of terms to describe learning outcomes, depending on whether they are awareness, training, or education games. The interpretation of the findings is that the reduction to just three types of CDGs reduces the capacity to communicate and think about learning outcomes and consequently reduces the outcomes that are intentionally achieved.
KW - IT security education
KW - Competence Developing Games
KW - Game-based learning
KW - Keyword analysis
KW - Bloom’s Taxonomy
Y1 - 2021
U6 - https://doi.org/10.1007/978-3-030-72132-9_6
N1 - ISAGA 2019 - International Simulation and Gaming Association Conference. 26-30 August 2019. Warsaw, Poland.
Part of the Lecture Notes in Computer Science book series (LNCS, volume 11988)
SP - 61
EP - 73
PB - Springer
CY - Cham
ER -
TY - JOUR
A1 - Orzada, S.
A1 - Maderwald, S.
A1 - Poser, B. A.
A1 - Johst, S.
A1 - Kannengiesser, S.
A1 - Ladd, M. E.
A1 - Bitz, Andreas
T1 - Time-interleaved acquisition of modes: an analysis of SAR and image contrast implications
JF - Magnetic Resonance in Medicine
N2 - s the magnetic field strength and therefore the operational frequency in MRI are increased, the radiofrequency wavelength approaches the size of the human head/body, resulting in wave effects which cause signal decreases and dropouts. Especially, whole-body imaging at 7 T and higher is therefore challenging. Recently, an acquisition scheme called time-interleaved acquisition of modes has been proposed to tackle the inhomogeneity problems in high-field MRI. The basic premise is to excite two (or more) different Burn:x-wiley:07403194:media:MRM23081:tex2gif-stack-1 modes using static radiofrequency shimming in an interleaved acquisition, where the complementary radiofrequency patterns of the two modes can be exploited to improve overall signal homogeneity. In this work, the impact of time-interleaved acquisition of mode on image contrast as well as on time-averaged specific absorption rate is addressed in detail. Time-interleaved acquisition of mode is superior in Burn:x-wiley:07403194:media:MRM23081:tex2gif-stack-2 homogeneity compared with conventional radiofrequency shimming while being highly specific absorption rate efficient. Time-interleaved acquisition of modes can enable almost homogeneous high-field imaging throughout the entire field of view in PD, T2, and T2*-weighted imaging and, if a specified homogeneity criterion is met, in T1-weighted imaging as well.
Y1 - 2012
U6 - https://doi.org/10.1002/mrm.23081
SN - 1522-2594
VL - 67
IS - 4
SP - 1033
EP - 1041
PB - Wiley-Liss
CY - New York
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 - Ferrein, Alexander
T1 - Towards applying soccer moves in the RoboCup Standard Platform League
JF - ÖGAI-Journal
Y1 - 2008
SN - 0254-4326
VL - Bd. 27
IS - H. 3
SP - 4
EP - 9
ER -
TY - JOUR
A1 - Booysen, Tracy
A1 - Rieger, Michael
A1 - Ferrein, Alexander
T1 - Towards inexpensive robots for science & technology teaching and 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 - Scholl, Ingrid
A1 - Palm, Christoph
A1 - Lehmann, Thomas Martin
A1 - Spitzer, Klaus
T1 - Trennung von diffuser und spiegelnder Reflexion in Farbbildern des Larynx zur Untersuchung von Farb- und Formmerkmalen der Stimmlippen. Palm, Christoph; Scholl, Ingrid; Lehmann, Thomas Martin; Spitzer, Klaus
JF - Bildverarbeitung für die Medizin
Y1 - 1996
SN - 3-86073-519-5
SP - 229
EP - 234
PB - Verlag der Augustinus-Buchhandlung
CY - Aachen
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 - Schuba, Marko
A1 - Busboom, Axel
A1 - Herwono, Ian
A1 - Zavagli, Guido
T1 - Unambiguous Device Identification and Fast Connection Setup in Bluetooth / Busboom, Axel ; Herwono, Ian ; Schuba, Marko ; Zavagli, Guido
JF - European wireless 2002 : next generation wireless networks: technologies, protocols, services and applications ; technical sessions: 26 - 28 February 2002, tutorials: 25 February 2002, Centro Affari, Florence, Italy ; proceedings / sponsored by EUREL ... General chair: Luciano Lenzini
Y1 - 2002
SP - 1
EP - 5
ER -
TY - JOUR
A1 - Engels, Elmar
A1 - Wiendahl, H.-P.
A1 - Doege, E.
T1 - Universelle hydraulische Try-Out Presse / Teilprojekt A6 / Wiendahl, H.-P. ; Doege, E. ; Engels, E.
JF - Tagungsband : 12. Oktober 1999, Leibnizhaus Hannover / Sonderforschungsbereich 384 Verfügbarkeitssicherung Reaktionsschneller Produktionssysteme, Universität Hannover. Hrsg.: H.-P. Wiendahl ; M. Röhrig
Y1 - 1999
SN - 3-00-005495-2
N1 - Industriekolloquium Verfügbarkeit <1999, Hannover> ; Sonderforschungsbereich Verfügbarkeitssicherung Reaktionsschneller Produktionssysteme
CY - Hannover
ER -
TY - JOUR
A1 - Ferrein, Alexander
A1 - Jacobs, Stefan
A1 - Lakemeyer, Gerhard
T1 - Unreal Golog Bots / Jacobs, Stefan ; Ferrein, Alexander ; Lakemeyer, Gerhard
JF - IJCAI-05 Workshop on Reasoning, Representation, and Learning in Computer Games
Y1 - 2005
SP - 31
EP - 36
ER -
TY - JOUR
A1 - Krause, Gregor
A1 - Kehle, Uwe
T1 - Unterstützung des Motorhochlaufs eines Pumpspeicherkraftwerks durch Mittel der Blindleistungskompensation / Uwe Kehle, Gregor Krause
JF - Ertüchtigung von Kraftwerken und Netzen, insbesondere in den neuen Bundesländern. Energietechnische Gesellschaft am 20. und 21. Oktober 1993 in Mannheim
Y1 - 1993
SN - 3-8007-1967-3
N1 - ETG-Fachbericht ; 47
SP - 287
EP - 296
PB - VDE-Verl.
CY - Berlin [u.a.]
ER -
TY - JOUR
A1 - Hillgärtner, Michael
A1 - Rinkleff, T
T1 - Untersuchung eines hybriden EMV-Simulationsverfahrens anhand eines virtuellen Komponententests
JF - Technisches Messen. 70 (2003), H. 3
Y1 - 2003
SN - 0340-837X
N1 - 2. ISSN: 0178-2312; 3. ISSN: 0171-8096
SP - 133
EP - 140
ER -
TY - JOUR
A1 - Foltz, Christian
A1 - Schneider, Nicole
A1 - Wolf, Martin
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 - 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 - 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 - Hüning, Felix
T1 - Using Trench PowerMOSFETs in Linear Mode
JF - Power Electronics Europe (2012)
N2 - If we think about applications for modern Power MOSFETs using trench technology, running them in linear mode may not be top of the priority list. Yet there are multiple uses for Trench Power MOSFETs in linear mode. In fact, even turning the device on and off in switching applications is a form of linear operation. Also, these components can be run in linear mode to protect the device against voltage surges. This article will illustrate the factors that need to be considered for linear operation and show how Trench Power MOSFETs are suited to it.
Y1 - 2012
SN - 1748-3530
SP - 27
EP - 29
PB - DFA Media
CY - Tonbridge
ER -
TY - JOUR
A1 - Hagemann, Hans-Jürgen
A1 - Ihrig, H.
T1 - Valence change and phase stability of 3d-doped BaTiO3 annealed in oxygen and hydrogen. Hagemann, H. J.; Ihrig, H.
JF - Physical Review B.. 20 (1979), H. 9
Y1 - 1979
SN - 1095-3795
SP - 3871
EP - 3878
ER -
TY - JOUR
A1 - Yazdanbakhsh, Pedram
A1 - Solbach, Klaus
A1 - Bitz, Andreas
T1 - Variable power combiner for RF mode shimming in 7-T MR imaging
JF - IEEE Transaction on Biomedical Engineering
N2 - This contribution discusses the utilization of RF power in an MRI system with RF mode shimming which enables the superposition of circularly polarized modes of a transmit RF coil array driven by a Butler matrix. Since the required power for the individual modes can vary widely, mode-shimming can result in a significant underutilization of the total available RF power. A variable power combiner (VPC) is proposed to improve the power utilization: it can be realized as a reconfiguration of the MRI transmit system by the inclusion of one additional matrix network which receives the power from all transmit amplifiers at its input ports and provides any desired (combined) power distribution at its output ports by controlling the phase and amplitude of the amplifiers’ input signals. The power distribution at the output ports of the VPC is then fed into the “mode” ports of the coil array Butler matrix in order to superimpose the spatial modes at the highest achievable power utilization. The VPC configuration is compared to the standard configuration of the transmit chain of our MRI system with 8 transmit channels and 16 coils. In realistic scenarios, improved power utilization was achieved from 17% to 60% and from 14% to 55% for an elliptical phantom and a region of interest in the abdomen, respectively, and an increase of the power utilization of 1 dB for a region of interest in the upper leg. In general, it is found that the VPC allows significant improvement in power utilization when the shimming solution demands only a few modes to be energized, while the technique can yield loss in power utilization in cases with many modes required at high power level.
Y1 - 2012
U6 - https://doi.org/10.1109/TBME.2012.2205926
SN - 1558-2531
VL - 59
IS - 9
SP - 2549
EP - 2557
PB - IEEE
CY - New York
ER -
TY - JOUR
A1 - Heuermann, Holger
A1 - Ibrahim, Irfan
A1 - Hillebrand, J.
T1 - Vector-Signal-Generator with Two ¿¿-PLL's / Ibrahim, I. ; Hillebrand, J. ; Heuermann, H.
JF - European Conference on Wireless Technologies, 2007. ECWT 2007 ; 8 - 10 October 2007 Munich, Germany
Y1 - 2007
SN - 978-2-87487-003-3
SP - 1
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Y1 - 1996
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T1 - Vergleich mehrerer Naeherungsverfahren zur Berechnung des Wellenwiderstandes von Mikrostreifenleitungen mit experimentellen Ergebnissen
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T1 - Verhandeln statt Energiesparen? Über den Umgang mit Preisnachlässen im Energiebereich
JF - extrACT: Das Magazin der Fachhochschule Aachen (2001)
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