From traditional approaches to computer-adaptive and web-based tests. 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. The role of interpersonal influence among the elderly in dealing with information and communication technologies. In particular, the condition number of the corresponding preconditioned system is bounded in terms of a logarithmic expression in the local problem size. The exterior problem is approximated using the boundary element method. For a listing of open PhD positions, see the latest news. This requires the solution of a potential problem, which can be done approximately by a couple of PCG-iterations.

Robust Schwarz-type methods for Maxwell’s equations rely on a FE-space splitting, which also has to provide a correct splitting of the kernel of the curl-operator. For details, please refer to the curriculum of the given doctoral program as the online course cataloge KUSSS. 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. Wearable Tracking Technology Mag. PhD thesis as PDF file 1. In particular, the condition number of the corresponding preconditioned system is bounded in terms of a logarithmic expression in the local problem size.

dissertation jku linz

We provide explicit condition number bounds that depend on a few geometric parameters, and which are quasi-optimal in special cases. Our results are ddissertation in numerical experiments.

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

In particular, the condition number of the corresponding preconditioned system is bounded in terms of a logarithmic expression in the local problem size. 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.

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PhD thesis as PDF file 1. An analogous principle is used for the construction of H div -conforming basis functions.

NUMA – PhD Theses – Sabine Zaglmayr

The global solution is then constructed iteratively from the repeated solution of local problems. Here, suitable preconditioners are needed in order to ensure that the number of iterations depends only weakly on the size hku the local problems.

Leszek DemkowiczUniversity of Texas at Austin. Furthermore, the bound is independent of jumps in the diffusion coefficient across subdomain interfaces.

Tanja Jardin Computer-aided cooperative learning The hp -version of FEM combines local mesh refinement h and local increase of the polynomial order of the approximation space p. Kurt Hoffmann Using e-learning in college Mag.

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

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

Second, we consider elliptic equations with highly heterogeneous coefficient distributions. Furthermore, the incorporation of a coarse solve ensures the scalability disseftation the method, which means that the number of iterations is independent of the number of subdomains. Prospective doctoral students should send their applications to Univ. Ulrich Langer External Referee: The main contribution of this work is a general, unified construction principle for H curl – and H div -conforming finite elements of variable and arbitrary order for various element topologies suitable for unstructured hybrid meshes.

Bernad Batinic including an explanation of the topic dissertatiom interest as well as a short CV including a list of any publications and conference contributions.

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For a listing of open PhD positions, see the latest news. Numerical examples illustrate the robustness and performance of the method. This requires the solution of a potential problem, which can be done approximately by a couple of PCG-iterations. We also demonstrate that FETI preconditioners can lead to robust behavior even for certain coefficient distributions that are highly varying in the vicinity of the subdomain interfaces.

Finite and dissfrtation element discretizations of elliptic partial differential equations result in large linear systems of algebraic equations.

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. In the next step we extend the gradient functions disseetation a hierarchical and conforming basis of the desired polynomial space. The exterior problem is approximated using the boundary element method.

dissertation jku linz

PhD thesis as PDF file 2. 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. For its solution we use the subspace version of the locally optimal preconditioned gradient method.

Further practical advantages will be discussed by means of the following two issues. From traditional approaches to computer-adaptive and web-based tests. A short outline of the construction is as follows.

dissertation jku linz

Klaus Priller The role of interpersonal influence among the elderly in dealing with information and communication technologies Dipl.