Faculties of University Bonn: Search
Now showing items 41-50 of 404
Lichtinduzierter Ladungstransport in undotierten Lithiumniobat-Kristallen
(2012-06-14)
Die Kombination von optischer Nichtlinearität und der Möglichkeit zur ferroelektrischen Domänenstrukturierung machen Lithiumniobat-Kristalle zu einem der wichtigsten Materialien im Bereich optischer Technologien. Unerwünschte ...
Measurement of beauty production in deep inelastic scattering at HERA using decays into electrons
(2011-03-29)
The production of beauty quarks in $ep$ interactions has been studied with the ZEUS detector at HERA for exchanged four-momentum squared $Q^{2} > 10 GeV^{2}$, using an integrated luminosity of $363 pb^{-1}$. The beauty ...
Phasengenaue Impedanzspektroskopie und -tomographie für geophysikalische Anwendungen
(2011-03-22)
Die elektrische Impedanzspektroskopie und die spektrale elektrische Impedanztomographie sind leistungsfähige Methoden zur nichtinvasiven Charakterisierung von Materialien bezüglich ihrer strukturellen Eigenschaften. Bei ...
Isotopes for fundamental research 83mKr for KATRIN and 101Rh and 109Cd for XRD studies on planets
(2011-03-15)
The feasibility of production of 83Rb from liquid, natural Br at the Bonn Cyclotron was shown. Production of 83Rb/83mKr generators for KATRIN Collaboration was optimized. 83mKr ...
Embedding the DFSZ–Axino in mSUGRA with R–Parity Violation and its implications for Dark Matter
(2011-01-21)
We embed the DFSZ axion in supersymmetry with broken R–parity. As Supersymmetry provides hundreds of free parameters we restrict ourselves to the lepton–number violating scenario in minimal supergravity models with ...
Information-theoretic approach for the characterization of interactions in nonlinear dynamical systems
(2011-05-11)
Symbolic time series analysis provides us a solid and broadly used toolkit for the characterization of interactions between nonlinear dynamical systems. In this thesis, information-theoretic measures are evaluated with ...
Observation of W → τντ Decays with the ATLAS Experiment
(2011-05-04)
Physics studies of processes with t leptons in the final state, while challenging at hadron colliders, are of great importance at the LHC. The τ leptons provide important signatures in searches for the Higgs boson as well ......
Weak Lensing & Substructure
(2011-05-10)
Understanding the evolution of the dark matter halos of galaxies after they become part of a cluster is essential for understanding their own evolution.
This thesis is a feasibility study on applying galaxy-galaxy ...
This thesis is a feasibility study on applying galaxy-galaxy ...
Datengetriebenes Clustering funktionell tomographischer Daten
(2011-02-24)
In der vorliegenden Arbeit wurden mit Hilfe eines datengetriebenen Verfahrens dynamische Eigenschaften von Daten der funktionellen Magnetresonanztomographie (fMRT) mit dem Ziel analysiert, neuronale Aktivität auf der Basis ...
On the origin and nature of brown dwarfs and massive planets
(2011-03-02)
In this thesis the apparent peculiarities of brown dwarfs (BDs) are pointed out which force us to treat them as a population apart from, but yet still related to the stellar population. In particular, the properties that ...