TY  - CHAP
A1  - Loeb, Horst W.
A1  - Schartner, Karl-Heinz
A1  - Dachwald, Bernd
A1  - Ohndorf, Andreas
A1  - Seboldt, Wolfgang
T1  - An Interstellar – Heliopause mission using a combination of solar/radioisotope electric propulsion
T2  - Presented at the 32nd International Electric Propulsion Conference
N2  - There is common agreement within the scientific community that in order to understand our local galactic environment it will be necessary to send a spacecraft into the region beyond the solar wind termination shock. Considering distances of 200 AU for a new mission, one needs a spacecraft travelling at a speed of close to 10 AU/yr in order to keep the mission duration in the range of less than 25 yrs, a transfer time postulated by ESA.Two propulsion options for the mission have been proposed and discussed so far: the solar sail propulsion and the ballistic/radioisotope electric propulsion. As a further alternative, we here investigate a combination of solar-electric propulsion and radioisotope-electric propulsion. The solar-electric propulsion stage consists of six 22 cm diameter “RIT-22”ion thrusters working with a high specific impulse of 7377 s corresponding to a positive grid voltage of 5 kV. Solar power of 53 kW BOM is provided by a light-weight solar array. The REP-stage consists of four space-proven 10 cm diameter “RIT-10” ion thrusters that will be operating one after the other for 9 yrs in total. Four advanced radioisotope generators provide 648 W at BOM. The scientific instrument package is oriented at earlier studies. For its mass and electric power requirement 35 kg and 35 W are assessed, respectively. Optimized trajectory calculations, treated in a separate contribution, are based on our “InTrance” method.The program yields a burn out of the REP stage in a distance of 79.6 AU for a usage of 154 kg of Xe propellant. With a C3 = 45,1 (km/s)2 a heliocentric probe velocity of 10 AU/yr is reached at this distance, provided a close Jupiter gravity assist adds a velocity increment of 2.7 AU/yr. A transfer time of 23.8 yrs results for this scenario requiring about 450 kg Xe for the SEP stage, jettisoned at 3 AU. We interpret the SEP/REP propulsion as a competing alternative to solar sail and ballistic/REP propulsion. Omiting a Jupiter fly-by even allows more launch flexibility, leaving the mission duration in the range of the ESA specification.
Y1  - 2011
N1  - 32nd International Electric Propulsion Conference, 11-15 September. Wiesbaden, Germany
SP  - 1
EP  - 7
ER  - 
TY  - JOUR
A1  - Hartung, Frank
A1  - Kumwilaisak, W.
T1  - An intraframe error concealment: nonlinear pattern alignment and directional interpolation / Kumwilaisak, W. ; Hartung, F.
JF  - Conference on Image Processing, 2004. ICIP '04. 2004 International / Vol. 2 .
Y1  - 2004
N1  - http://dx.doi.org/10.1109/ICIP.2004.1419426
SP  - 825
EP  - 828
ER  - 
TY  - JOUR
A1  - Kämper, Klaus-Peter
A1  - Döpper, J.
A1  - Ehrfeld, W.
A1  - Hagemann, B.
T1  - An investigation of computer modelling for micro-injection moulding. Hill, S.D.J.; Kämper, K.-P.; Dasbach, U.; Döpper, J.; Ehrfeld, W.; Kaupert, M.
JF  - Simulation and design of microsystems and microstructures : [... contains the papers presented at the First International Conference on the Simulation and Design of Microsystems and Microstructures, MicroSIM '95, which was held in Southampton, UK, in September 1995] / [organised by: Wessex Institute of Technology, UK]. Ed.: R. A. Adey
Y1  - 1995
SN  - 1-85312-390-0
SP  - 275
PB  - Computational Mechanics Publ.
CY  - Southampton [u.a.]
ER  - 
TY  - JOUR
A1  - Ziemons, Karl
T1  - An investigation of the spin structure of the proton in deep inelastic scattering of polarised muons and polarised protons
JF  - Nuclear Physics B
N2  - The spin asymmetry in deep inelastic scattering of longitudinally polarised muons by longitudinally polarised protons has been measured in the range 0.01<×<0.7. The spin dependent structure function g1(x) for the proton has been determined and, combining the data with earlier SLAC measurements, its integral over x found to be 0.126±0.010(stat.)±0.015(syst.), in disagreement with the Ellis-Jaffe sum rule. Assuming the validity of the Biorken sum rule, this result implies a significant negative value for the integral of g1 for the neutron. These integrals lead to the conclusion, in the naïve quark parton model, that the total quark spin constitutes a rather small fraction of the spin of the nucleon. Results are also presented on the asymmetries in inclusive hadron production which are consistent with the above picture.
Y1  - 1989
SN  - 0550-3213
N1  - European Muon Collaboration
VL  - 328
IS  - 1
SP  - 1
EP  - 35
ER  - 
TY  - JOUR
A1  - Poghossian, Arshak
A1  - Schöning, Michael Josef
A1  - Schroth, P.
A1  - Simonis, A.
A1  - Lüth, H.
T1  - An ISFET-based penicillin sensor with high sensitivity, low detection limit and long lifetime
JF  - Sensors and Actuators B. 76 (2001), H. 1-3
Y1  - 2001
SN  - 0925-4005
SP  - 519
EP  - 526
ER  - 
TY  - JOUR
A1  - Abel, Alexander
A1  - Kahmann, Stephanie Lucina
A1  - Mellon, Stephen
A1  - Staat, Manfred
A1  - Jung, Alexander
T1  - An open-source tool for the validation of finite element models using three-dimensional full-field measurements
JF  - Medical Engineering & Physics
N2  - Three-dimensional (3D) full-field measurements provide a comprehensive and accurate validation of finite element (FE) models. For the validation, the result of the model and measurements are compared based on two respective point-sets and this requires the point-sets to be registered in one coordinate system. Point-set registration is a non-convex optimization problem that has widely been solved by the ordinary iterative closest point algorithm. However, this approach necessitates a good initialization without which it easily returns a local optimum, i.e. an erroneous registration. The globally optimal iterative closest point (Go-ICP) algorithm has overcome this drawback and forms the basis for the presented open-source tool that can be used for the validation of FE models using 3D full-field measurements. The capability of the tool is demonstrated using an application example from the field of biomechanics. Methodological problems that arise in real-world data and the respective implemented solution approaches are discussed.
Y1  - 2020
U6  - http://dx.doi.org/10.1016/j.medengphy.2019.10.015
SN  - 1350-4533
VL  - 77
SP  - 125
EP  - 129
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Förster, Arnold
A1  - Verghese, S.
A1  - Zamdmer, N.
A1  - Hu, Qing
T1  - An optical correlator using a low-temperature-grown GaAs photoconductor / S. Verghese ; N. Zamdmer ; Qing Hu .... A. Förster
JF  - Applied physics letters. 69 (1996), H. 6
Y1  - 1996
SN  - 0003-6951
N1  - ISSN der E-Ausg.: 1077-3118
SP  - 842
EP  - 844
ER  - 
TY  - CHAP
A1  - Alhwarin, Faraj
A1  - Schiffer, Stefan
A1  - Ferrein, Alexander
A1  - Scholl, Ingrid
T1  - An Optimized Method for 3D Body Scanning Applications Based on KinectFusion
T2  - Communications in Computer and Information Science
Y1  - 2019
U6  - http://dx.doi.org/10.1007/978-3-030-29196-9_6
SN  - 1865-0929
N1  - 11th International Joint Conference on Biomedical Engineering Systems and Technologies, BIOSTEC 2018; Funchal; Portugal; 19 January 2018 through 21 January 2018
VL  - 1024
SP  - 100
EP  - 113
PB  - Springer
ER  - 
TY  - JOUR
A1  - Funke, Harald
A1  - Beckmann, Nils
A1  - Abanteriba, Sylvester
T1  - An overview on dry low NOx micromix combustor development for hydrogen-rich gas turbine applications
JF  - International Journal of Hydrogen Energy
Y1  - 2019
U6  - http://dx.doi.org/10.1016/j.ijhydene.2019.01.161
SN  - 0360-3199
VL  - 44
IS  - 13
SP  - 6978
EP  - 6990
PB  - Elsevier
CY  - Amsterdam
ER  - 
TY  - JOUR
A1  - Stulpe, Werner
A1  - Gudder, S.
A1  - Hagler, J.
T1  - An Uncertainty Relation for Joint Position-Momentum Measurements
JF  - Foundations of Physics Letters. 1 (1988), H. 3
Y1  - 1988
SN  - 1572-9524
SP  - 287
EP  - 292
ER  -