11 citations · 15 across the 13 of their papers we have counts for
10 papers · 1 filter
Heat Conduction with Phase Change in Permafrost Modules of Vegetation Models
David Hötten, Jenny Niebsch, Ronny Ramlau +1
We consider the problem of heat conduction with phase change, that is essential for permafrost modeling in Land Surface Models and Dynamic Global Vegetation Models. These models re…
On some analytic properties of the atmospheric tomography operator: Non-Uniqueness and reconstructability issues
Ronny Ramlau, Bernadett Stadler
In this paper, we consider the atmospheric tomography operator, which describes the effect of turbulent atmospheric layers on incoming planar wavefronts. Given wavefronts from diff…
An Inverse Problems Approach to Pulse Wave Analysis in the Human Brain
Lukas Weissinger, Simon Hubmer, Ronny Ramlau +1
Cardiac pulsations in the human brain have received recent interest due to their possible role in the pathogenesis of neurodegenerative diseases. Further interest stems from their…
Regularization of linear inverse problems with irregular noise using embedding operators
Xinyan Li, Simon Hubmer, Shuai Lu +1
In this paper, we investigate regularization of linear inverse problems with irregular noise. In particular, we consider the case that the noise can be preprocessed by certain adjo…
Estimating solution smoothness and data noise with Tikhonov regularization
Daniel Gerth, Ronny Ramlau
A main drawback of classical Tikhonov regularization is that often the parameters required to apply theoretical results, e.g., the smoothness of the sought-after solution and the n…
Subspace Recycling-based Regularization Methods
Ronny Ramlau, Kirk M. Soodhalter, Victoria Hutterer
Subspace recycling techniques have been used quite successfully for the acceleration of iterative methods for solving large-scale linear systems. These methods often work by augmen…