Refine
Year of publication
Institute
- Fachbereich Medizintechnik und Technomathematik (1569)
- Fachbereich Elektrotechnik und Informationstechnik (712)
- IfB - Institut für Bioengineering (564)
- Fachbereich Energietechnik (562)
- Fachbereich Chemie und Biotechnologie (538)
- INB - Institut für Nano- und Biotechnologien (533)
- Fachbereich Luft- und Raumfahrttechnik (481)
- Fachbereich Maschinenbau und Mechatronik (266)
- Fachbereich Wirtschaftswissenschaften (207)
- Solar-Institut Jülich (161)
- Fachbereich Bauingenieurwesen (150)
- ECSM European Center for Sustainable Mobility (84)
- MASKOR Institut für Mobile Autonome Systeme und Kognitive Robotik (62)
- Fachbereich Architektur (31)
- Nowum-Energy (25)
- Fachbereich Gestaltung (24)
- Institut fuer Angewandte Polymerchemie (24)
- Sonstiges (21)
- Kommission für Forschung und Entwicklung (20)
- Freshman Institute (18)
- ZHQ - Bereich Hochschuldidaktik und Evaluation (8)
- IMP - Institut für Mikrowellen- und Plasmatechnik (4)
- Arbeitsstelle fuer Hochschuldidaktik und Studienberatung (3)
- FH Aachen (2)
- IaAM - Institut für angewandte Automation und Mechatronik (2)
- Kommission für Planung und Finanzen (2)
- Senat (2)
- Digitalisierung in Studium & Lehre (1)
Has Fulltext
- no (4709) (remove)
Language
- English (4709) (remove)
Document Type
- Article (3202)
- Conference Proceeding (1038)
- Part of a Book (195)
- Book (146)
- Doctoral Thesis (32)
- Conference: Meeting Abstract (29)
- Patent (25)
- Other (10)
- Report (10)
- Conference Poster (5)
Keywords
- Gamification (6)
- avalanche (6)
- Earthquake (5)
- Enterprise Architecture (5)
- MINLP (5)
- solar sail (5)
- Additive manufacturing (4)
- Diversity Management (4)
- Energy storage (4)
- Engineering optimization (4)
Results are presented on the ratios of the nucleon structure function in copper to deuterium from two separate experiments. The data confirm that the nucleon structure function,F 2, is different for bound nucleons than for the quasi-free ones in the deuteron. The redistribution in the fraction of the nucleon's momentum carried by quarks is investigated and it is found that the data are compatible with no integral loss of quark momenta due to nuclear effects.
The spin asymmetry in deep inelastic scattering of longitudinally polarised muons by longitudinally polarised protons has been measured over a large x range (0.01<x<0.7). The spin-dependent structure function g1(x) for the proton has been determined and its integral over x found to be 0.114±0.012±0.026, in disagreement with the Ellis-Jaffe sum rule. Assuming the validity of the Bjorken sum rule, this result implies a significant negative value for the integral of g1 for the neutron. These values for the integrals of g1 lead to the conclusion that the total quark spin constitutes a rather small fraction of the spin of the nucleon.
Purpose
To calculate local specific absorption rate (SAR) correctly, both the amplitude and phase of the signal in each transmit channel have to be known. In this work, we propose a method to derive a conservative upper bound for the local SAR, with a reasonable safety margin without knowledge of the transmit phases of the channels.
Methods
The proposed method uses virtual observation points (VOPs). Correction factors are calculated for each set of VOPs that prevent underestimation of local SAR when the VOPs are applied with the correct amplitudes but fixed phases.
Results
The proposed method proved to be superior to the worst-case calculation based on the maximum eigenvalue of the VOPs. The mean overestimation for six coil setups could be reduced, whereas no underestimation of the maximum local SAR occurred. In the best investigated case, the overestimation could be reduced from a factor of 3.3 to a factor of 1.7.
Conclusion
The upper bound for the local SAR calculated with the proposed method allows a fast estimation of the local SAR based on power measurements in the transmit channels and facilitates SAR monitoring in systems that do not have the capability to monitor transmit phases
A microscopic photometric method for measuring erythrocyte deformability. Artmann, Gerhard Michael
(1986)
Gearboxes are mechanical transmission systems that provide speed and torque conversions from a rotating power source. Being a central element of the drive train, they are relevant for the efficiency and durability of motor vehicles. In this work, we present a new approach for gearbox design: Modeling the design problem as a mixed-integer nonlinear program (MINLP) allows us to create gearbox designs from scratch for arbitrary requirements and—given enough time—to compute provably globally optimal designs for a given objective. We show how different degrees of freedom influence the runtime and present an exemplary solution.