Sökning: "eigenvalue problem"
Visar resultat 11 - 15 av 61 avhandlingar innehållade orden eigenvalue problem.
11. Krylov methods for nonlinear eigenvalue problems and matrix equations
Sammanfattning : Nonlinear eigenvalue problems (NEPs) arise in many fields of science and engineering. Such problems are often defined by large matrices, which have specific structures, such as being sparse, low-rank, etc. Like the linear eigenvalue problem, the eigenvector appears in a linear form, whereas the eigenvalue appears in a nonlinear form. LÄS MER
12. Resonant Microwave Sensors for Industrial Applications
Sammanfattning : This thesis presents developments in the area of microwave-based sensor systems for industrial applications. The work is motivated by a need for advanced measurement techniques in industry in general, and the process industry in particular. LÄS MER
13. Eigenfrequency Analysis FE-Adaptivity and a Nonlinear Eigenproblem Algorithm
Sammanfattning : Engineering often pose the problem of computing the frequencies with which a system oscillates and the corresponding displacement patterns the system forms, and in case damping is present then the rates of which the amplitudes of the displacement patterns decay are also required. It is necessary to compute these quantities within a prescribed accuracy and the effort required for the computations should be minimised. LÄS MER
14. Cut isogeometric methods on trimmed multipatch surfaces
Sammanfattning : Partial differential equations (PDE) on surfaces appear in a variety of applications, such as image processing, modeling of lubrication, fluid flows, diffusion, and transport of surfactants. In some applications, surfaces are drawn and modeled by using CAD software, giving a very precise patchwise parametric description of the surface. LÄS MER
15. Eigenvalue analysis and convergence acceleration techniques for summation-by-parts approximations
Sammanfattning : Many physical phenomena can be described mathematically by means of partial differential equations. These mathematical formulations are said to be well-posed if a unique solution, bounded by the given data, exists. LÄS MER