E-Dissertationen: Browsing E-Dissertationen by Title
Now showing items 2094-2113 of 4067
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Low-column density gas clumps in the inner and outer halo of the Milky Way
Ben Bekhti, Nadya (2009-03-30)More than 40 years ago the occurrence of several narrow absorption lines in QSO (quasi-stellar object) spectra was recognized for the first time (Bahcall 1966). Soon after their detection it became clear that the absorption ... -
Low-dimensional Representations for Diverse Collections of 3D Surface Meshes
Hahner, Sara Vera (2024-02-29)The surfaces of 3D shapes are discretized by surface meshes that represent them in a processable way. This enables simulations of deforming components in CAE, animations for movies, or representations of human organs to ... -
Low-energy scattering on the lattice
Bour Bour, Shahin (2014-06-24)In this thesis we present precision benchmark calculations for two-component fermions in the unitarity limit using an ab initio method, namely Hamiltonian lattice formalism. We calculate the ground state energy for unpolarized ... -
Low-rank Tensor Recovery
Stojanac, Željka (2016-10-28)Low-rank tensor recovery is an interesting subject from both the theoretical and application point of view. On one side, it is a natural extension of the sparse vector and low-rank matrix recovery problem. On the other ... -
The Low-Resolution DRAO Survey of Polarized Emission at 1.4 GHz
Wolleben, Maik (2005)This thesis deals with the realization and analysis of a new polarization survey of the northern sky at a frequency of 1.4 GHz. Survey observations were carried out using the DRAO 26-m telescope and are absolutely calibrated. ... -
Lower semicontinuity, optimization and regularity of variational problems under general PDE constraints
Arroyo Rabasa, Adolfo (2018-04-12)We investigate variational properties of integral functionals defined on spaces of measures satisfying a general PDE constraint. The study of these properties is motivated by the following three problems: existence of ... -
Lösungen für das Stefan-Problem mit Gibbs–Thomson-Gesetz bei lokaler Minimierung
Röger, Matthias (2003)In dieser Arbeit wird ein neues Existenzresultat für das Stefan-Problem mit Gibbs-Thomson-Problem vorgestellt.Im Unterschied zum Vorgehen von Luckhaus bei seinem Beweis der Existenz und Uneindeutigkeit schwacher Lösungen ... -
Die Lößvorkommen des Pleiser Hügellandes bei Bonn und von Neustadt/Wied sowie der Picardie: Mineralogisch-geochemische und geomorphologische Charakterisierung, Verwitterungs-Beeinflussung und Herkunft der Lösse
Smykatz-Kloss, Bettina (2004)Die vorliegenden Untersuchungen wurden an den im Verlaufe des ICE-Trassenausbaus (Köln-Frankfurt) frisch aufgeschlossenen Lößprofilen Birlinghoven, Rauschendorf, Bockeroth, Thomasberg (alle im Pleiser Hügelland nahe Bonn) ... -
Lypd6: Ein neuartiger Modulator neuronaler nikotinischer Acetylcholinrezeptoren
Morsch, Marco (2009-05-15)Nikotinischce Acetylcholinrezeptoren (nAChRs) zeigen für unterschiedliche Agonisten spezifische Sensitivitäten und Desensitisierungskinetiken. Diese Rezeptoreigenschaften können z.B. durch Schlangenneurotoxine oder den ... -
Lysine-specific histone demethylase 1 (LSD1): A novel molecular target for tumor therapy
Lim, Soyoung (2010-01-27)Aberrant epigenetic changes in DNA methylation and histone acetylation are hallmarks of most cancers, while histone methylation had been considered to be irreversible and less versatile. Recently, several histone demethylases ... -
Machine learning approaches for adaptive optics in microscopy
Vishniakou, Ivan (2023-05-08)Microscopic imaging is an essential tool for science. For instruments that operate close to the physically possible diffraction limit, a main remaining challenge are aberrating operating conditions. For microscopy, such ... -
Machine learning for monitoring groundwater resources over Europe
Ma, Yueling (2022-08-30)Groundwater (GW) is an important natural resource for Europe and the world, and has been affected by extreme weather and climate, e.g., summer heat waves and droughts, and human overexploitation. As climate change and human ... -
Machine Learning Methodologies for Interpretable Compound Activity Predictions
Rodríguez Pérez, Raquel (2020-02-26)Machine learning (ML) models have gained attention for mining the pharmaceutical data that are currently generated at unprecedented rates and potentially accelerate the discovery of new drugs. The advent of deep learning ... -
Machine Learning to Elucidate Mechanisms of Human Cognition and Epilepsy
Jahanbekam, Amirhossein (2020-11-25)Machine learning approaches, a branch of computer science based on the study of complex statistical algorithms, help researchers predict and discover facts about the outside world that may otherwise be too latent and ... -
Magnetic Fields and the Formation of Aspherical Planetary Nebulae
de Lima Leal Ferreira, Marcelo (2015-02-19)The general evolution of stars with initial mass between 0.8 and 8 solar masses is believed to be well understood until the last stages, when significant mass loss starts. However, an initially spherical star may evolve ... -
Magnetic Outflows in the Virgo Galaxy NGC 4388
Damas Segovia, Ancor (2017-07-21)We investigate the effects of ram pressure on the ordered magnetic field of the edge-on Virgo galaxy NGC 4388 hosting a radio halo and strong nuclear outflows. New radio images in total and polarized intensity were obtained ... -
Magnetic Quantum Walks of Neutral Atoms in Optical Lattices
Sajid, Muhammad (2018-09-17)This thesis focuses on the simulation of the physics of a charged particle under an external magnetic field by using discrete-time quantum walks of a spin-1/2 particle in a two-dimensional lattice. By Floquet-engineering ... -
Magnetic Resonance Rheology on Phantoms and Human Brains
Kofahl, Anna-Lisa (2017-07-05)In this thesis first systematic measurements on phantoms and human brains using Magnetic Resonance Rheology (MRR) are presented and means to evaluate the acquired data are investigated.
MRR is a novel technique ... -
Magnetisation of the IGM: Role of Starburst Dwarf Galaxies
Purkayastha, Amrita (2014-01-30)Magnetic fields are ubiquitous in the Cosmos. They are observed on all scales -- from our solar system to galaxy clusters millions of light years away. The dynamo theory and the theory of gravitational compression during ... -
Magnetische Hyperfeinwechselwirkungen in den metamagnetischen seltenen Erd-Kobalt Laves Phasen RCo2
Müller, Stephan (2003)Die vorliegende Arbeit befasst sich mit dem Studium der magnetischen Eigenschaften der RCo2 Laves Phasen (R = Pr, Nd Sm (leichte Seltene Erden) und Gd, Tb, Dy, Ho, Er, Tm (schwere Seltene Erden)) ...