Essays about: "eigenvalue problem"

Showing result 11 - 15 of 36 essays containing the words eigenvalue problem.

  1. 11. Computation of Eigenmodes in Three-Dimensional Structures

    University essay from KTH/Skolan för teknikvetenskap (SCI)

    Author : Daniel Lilja; Olof Hummelgren; [2020]
    Keywords : ;

    Abstract : In this thesis the eigenmodes and eigenvalues of three dimensional structures are analyzed using the Python environment FEniCS in combination with an implementation of the Arnoldi method in MATLAB for calculation of eigenpairs. This is done by considering separable solutions of the wave equation and subsequently expressing these as the solutions to an eigenvalue problem. READ MORE

  3. 12. Image Processing using Graph Laplacian Operator

    University essay from KTH/Skolan för elektroteknik och datavetenskap (EECS)

    Author : David Wobrock; [2019]
    Keywords : ;

    Abstract : The latest image processing methods are based on global data-dependent filters. These methods involve huge affinity matrices which cannot fit in memory and need to be approximated using spectral decomposition. READ MORE

  4. 13. Artificial Neural Networks to Solve Inverse Problems in Quantum Physics

    University essay from Lunds universitet/Matematisk fysik; Lunds universitet/Fysiska institutionen; Lunds universitet/Fasta tillståndets fysik

    Author : Victor Lantz; [2019]
    Keywords : Artificial Neural Networks; ANN; Deep learning; Quantum physics; Inverse problem; Inverse; Machine learning; Density functional theory; DFT; Physics; Computational physics; Technology and Engineering;

    Abstract : Inverse problems are important in quantum physics as their solutions are essential in order to describe a number of systems using measurable information, e.g. excitation energies or material properties. The problem with inverse problems is that they are usually very hard to solve. READ MORE

  5. 14. Modeling and Simulation of Brake Squeal in Disc Brake Assembly

    University essay from Karlstads universitet/Fakulteten för hälsa, natur- och teknikvetenskap (from 2013)

    Author : Jenny Nilman; [2018]
    Keywords : Brake Squeal; Complex Eigenvalue Analysis; Model Validation; Parametric Study; High Frequency; Brake Noise;

    Abstract : Brake squeal is an old and well-known problem in the vehicle industry and is a frequent source for customer complain. Although, brake squeal is not usually affecting the performance of the brakes, it is still important to address the problem and to predict the brakes tendency to squeal on an early stage in the design process. READ MORE

  6. 15. Approximating extrema of quadratic forms using Krylov subspaces

    University essay from Lunds universitet/Matematik LTH

    Author : Simon Hallborn; [2017]
    Keywords : Approximations; Quadratic forms; Krylov subspaces; Eigenvalue problems; Norms; Logarithmic norms; Mathematics and Statistics;

    Abstract : In this thesis approximations to quadratic forms using Krylov subspaces are presented. These quantities are approximations of the norm and logarithmic norm of a matrix. In order to find these quantities an eigenvalue problem has to be solved, but because of limited storage and time, this is not feasible in practice with large matrices. READ MORE