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  - CHAP
A1  - Mayntz, Joscha
A1  - Keimer, Jona
A1  - Dahmann, Peter
A1  - Hille, Sebastian
A1  - Stumpf, Eike
A1  - Fisher, Alex
A1  - Dorrington, Graham
T1  - Electrical Drive and Regeneration in General Aviation Flight with Propellers
T2  - Deutscher Luft- und Raumfahrtkongress 2020
N2  - Electric flight has the potential for a more sustainable and energy-saving way of aviation compared to fossil fuel aviation. The electric motor can be used as a generator inflight to regenerate energy during descent. Three different approaches to regenerating with electric propeller powertrains are proposed in this paper. The powertrain is to be set up in a wind tunnel to determine the propeller efficiency in both working modes as well as the noise emissions. Furthermore, the planned flight tests are discussed. In preparation for these tests, a yaw stability analysis is performed with the result that the aeroplane is controllable during flight and in the most critical failure case. The paper shows the potential for inflight regeneration and addresses the research gaps in the dual role of electric powertrains for propulsion and regeneration of general aviation aircraft.
KW  - Propeller Aerodynamics
KW  - Flight Tests
KW  - Flight Mechanics
KW  - Electrical Flight
KW  - Inflight Regeneration, Recuperation
Y1  - 2022
U6  - https://doi.org/10.25967/530100
N1  - Deutscher Luft- und Raumfahrtkongress 2020, 1. - 3. September 2020, Online
PB  - DGLR
CY  - Bonn
ER  - 
TY  - CHAP
A1  - Wolf, Martin R.
A1  - Lenz, Laura L.
T1  - The economic effectiveness of serious games in the healthcare environment : application and evaluation of the Comparative Transformation Model (CTM)
T2  - IEEE 3rd International Conference on Serious Games and Applications for Health : SeGAH 2014 ; Rio de Janeiro, Brazil, May 14 - 16
Y1  - 2015
SN  - 978-1-4799-4823-9
U6  - https://doi.org/10.1109/SeGAH.2014.7067089
SP  - 135
EP  - 142
PB  - IEEE [u.a.]
CY  - Piscataway, NJ
ER  - 
TY  - JOUR
A1  - Fabo, Sabine
ED  - Mohr, Klaus
T1  - Sisyphus wird Steiff
JF  - Prädikat spießig (Boxhorn ; 21)
N2  - Eine Reise durch die fremde Welt eines Kaufhaus-Schaufensters. Plüschtiere mit eingebauter Bewegungstechnik - knuffig oder nur eine Ausformulierung des Ernst des Lebens?
Y1  - 2010
SN  - 1864-2535
VL  - 2010
SP  - 58
EP  - 61
PB  - FH Aachen, Fachbereich Gestaltung
CY  - Aachen
ER  - 
TY  - CHAP
A1  - Peeken, Heinz
A1  - Troeder, Christoph
A1  - Benner, Joachim
A1  - Platt, Werner
T1  - A new approach to describe the mechanical performance of flexible couplings in drive systems
T2  - Proceedings of the International Conference on Rotordynamics : September 14 - 17, 1986, Tokyo
Y1  - 1986
N1  - International Conference on Rotordynamics <1986, Tōkyō>
SP  - 159
EP  - 163
PB  - IFToMM
CY  - Tokyo
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  - Anik, Sabri
A1  - Tuelbentci, K.
T1  - Lichtbogenschweißen : Untersuchung der Schweißschlacke und der Wirkungen auf das Entfernen der Schlacke ; Teil 3
JF  - Technische Rundschau : TR ; das Schweizer Industrie-Magazin
Y1  - 1974
SN  - 0040-148X
VL  - 66
IS  - 2
SP  - 43
EP  - 47
PB  - Medtrix Group
CY  - Basel
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  - CHAP
A1  - Ringbeck, Thorsten
A1  - Schwarte, Rudolf
A1  - Buxbaum, Bernd
ED  - Korevaar, Eric John
T1  - Introduction of a new opto-electrical phase-locked loop in CMOS technology: the PMD-PLL
T2  - Optical wireless communications II / [SPIE Conference on Optical Wireless Communications II], 22 September 1999, Boston, Massachusetts. - (SPIE proceedings series ; 3850)
Y1  - 1999
SN  - 0-8194-3443-4
SN  - 0038-7355
SN  - 0361-0748
SN  - 0277-786X
N1  - Conference on Optical Wireless Communications <2, 1999, Boston, Mass.
SP  - 108
EP  - 116
PB  - SPIE
CY  - Bellingham, Wash.
ER  - 
TY  - CHAP
A1  - Augenstein, Eckardt
A1  - Kuperjans, Isabel
A1  - Lucas, K.
ED  - Tsatsaronis,, Georgios
T1  - EUSEBIA - Decision-Support-System for Technical, Economical and Ecological Design and Evaluation of Industrial Energy Systems
T2  - ECOS 2002 : proceedings of the 15th International Conference on Efficiency, Costs, Optimization, Simulation and Environmental Impact of Energy Systems, Berlin, Germany July 3 - 5, 2002. - Vol. 1
Y1  - 2002
SN  - 3-00-009533-0
SP  - 446
EP  - 453
PB  - Techn. Univ., Inst. for Energy Engineering
CY  - Berlin
ER  -