### DISSERTATION JKU LINZ

The fact that this exterior domain can touch arbitrarily many interior subdomains and that the diameter of its boundary is larger than those of the interior subdomains leads to special difficulties in the analysis. The exterior problem is approximated using the boundary element method. PhD thesis as PDF file 1. Furthermore, the bound is independent of jumps in the diffusion coefficient across subdomain interfaces. The main difficulty in the construction of efficient and parameter-robust preconditioners for electromagnetic problems is indicated by the different scaling of solenoidal and irrotational fields in the curl-curl problem. The global solution is then constructed iteratively from the repeated solution of local problems.

Timo Gnambs Toward an assessment of generalized opinion leadership: By our separate treatment of edge-based, face-based, and cell-based functions, and by including the corresponding gradient functions, we can establish the local exact sequence property: Generally, the dissertations written in our department are based on quantitative-empirical research studies. Kurt Hoffmann Using e-learning in college Mag. The dissertation itself is usually written cumulatively, i.

Tanja Jardin Computer-aided cooperative learning Behaviour, Risk Taking and Personality Asc.

## Johannes Kepler University Linz (Linz/Austria) – JKU goes Gender – prize for dissertation

For a listing of open PhD positions, see the latest news. Kurt Hoffmann Using e-learning in college Mag.

Current dissertations Author Working title Mag. By our separate treatment of edge-based, face-based, and cell-based functions, and by including the corresponding gradient functions, we can establish the local exact sequence property: Since the desired eigenfunctions belong to the orthogonal complement of the gradient functions, we have to perform an orthogonal projection in each iteration step.

PhD thesis as PDF file 2. A short outline of the construction is as dissertwtion. In particular, the condition number of the corresponding preconditioned system is bounded in terms of a logarithmic expression in the local problem disssertation.

We provide explicit condition number bounds that depend on a few geometric parameters, and which are quasi-optimal in special liz. The role of interpersonal influence among the elderly in dealing with information and communication technologies. Bernad Batinic including an explanation of the topic of interest as well as a short CV including a list of any publications and conference contributions. Ulrich Langer External Referee: Generally, the dissertations written in our department are based on quantitative-empirical research studies.

# NUMA: Finished PhD Theses – Dipl.-Ing. Clemens Pechstein

Considering benchmark problems involving highly singular eigensolutions, we demonstrate the performance of the constructed preconditioners and the eigenvalue solver in combination with hp -discretization on geometrically refined, anisotropic meshes.

The gradient fields of higher-order H 1 -conforming shape functions are H curl -conforming and can be chosen explicitly as shape functions for H curl. Klaus Priller The role of interpersonal influence among the elderly in dealing with information and communication technologies Dipl. Our results are confirmed in numerical experiments. A main advantage is that we can choose an arbitrary polynomial order on each edge, face, and cell without destroying the global exact sequence.

For details, please refer to the curriculum of dissertatioon given doctoral program as the online course cataloge KUSSS. An analogous principle is used for the construction of H div -conforming basis functions.

The fact that this exterior domain can touch arbitrarily many interior subdomains and that the diameter of its boundary is larger than those of the interior subdomains leads to special difficulties in the analysis.

Finally, we consider nonlinear stationary magnetic field problems in two dimensions, as an important application of our preceding analysis. The key point is to respect the de Rham Complex already in the construction of the finite element basis functions and not, as usual, only for the definition of the local FE-space.

A challenging diseertation in computational electromagnetics is the Maxwell eigenvalue problem. Timo Gnambs Toward an assessment of generalized opinion leadership: The exterior problem dissettation approximated using the boundary element method. First, we consider the case of unbounded domains, where one subdomain corresponds to an exterior problem, while the other subdomains are bounded.

This requires the solution of a potential problem, which can be done approximately by a couple of PCG-iterations. The main difficulty in the construction of efficient and parameter-robust preconditioners for electromagnetic problems is indicated by the different scaling of solenoidal and irrotational fields in the curl-curl problem. Finite and boundary element discretizations of elliptic partial differential equations result in large linear systems of algebraic equations.

We prove rigorous bounds for the condition number of the preconditioned FETI system that depend only on the coefficient variation in the vicinity of the subdomain interfaces.

Furthermore, the bound is independent of jumps in the diffusion coefficient across subdomain interfaces. Toward an assessment of generalized opinion leadership: