Search for dissertations about: "basis of conservation laws"

Showing result 1 - 5 of 7 swedish dissertations containing the words basis of conservation laws.

2. 1. Symmetries and conservation laws

   Author : Raisa Khamitova; Börje Nilsson; Claes Jougréus; Maria Luz Gandarias; Växjö universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; conservation law; Noether s theorem; Lie group analysis; Lie-Bäcklund transformations; basis of conservation laws; formal Lagrangian; self-adjoint equation; quasi-selfadjoint; equation; nonlocal conservation law; Mathematical physics; Matematisk fysik;

   Abstract : Conservation laws play an important role in science. The aim of this thesis is to provide an overview and develop new methods for constructing conservation laws using Lie group theory. The derivation of conservation laws for invariant variational problems is based on Noether’s theorem. READ MORE

4. 2. Uncertainty Quantification and Numerical Methods for Conservation Laws

   Author : Per Pettersson; Jan Nordström; Gianluca Iaccarino; Gunilla Kreiss; Rémi Abgrall; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; uncertainty quantification; polynomial chaos; stochastic Galerkin methods; conservation laws; hyperbolic problems; finite difference methods; finite volume methods; Beräkningsvetenskap med inriktning mot numerisk analys; Scientific Computing with specialization in Numerical Analysis;

   Abstract : Conservation laws with uncertain initial and boundary conditions are approximated using a generalized polynomial chaos expansion approach where the solution is represented as a generalized Fourier series of stochastic basis functions, e.g. orthogonal polynomials or wavelets. READ MORE

5. 3. Numerical ice sheet modeling : Forward and inverse problems

   Author : Gong Cheng; Lina von Sydow; Per Lötstedt; Nina Kirchner; Irina Tezaur; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; ice sheet modeling; finite element method; grounding line migration; inverse problems; adjoint method; Scientific Computing; Beräkningsvetenskap;

   Abstract : Ice sheets have strong influence on the climate system. Numerical simulation provides a mathematical tool to study the ice dynamics in the past and to predict their contribution to climate change in the future. Large scale ice sheets behave as incompressible non-Newtonian fluid. READ MORE

6. 4. In a Man´s World : Tolkninger av lovbrudd gjort i langtransportens yrkeskontekst

   Author : Vanja Lundgren Sørli; Henrik Tham; Eva Tiby; Kjersti Ericsson; Stockholms universitet; []
   Keywords : structures; gender; masculinity; normalization; Key words: Long-distance trucking; occupational crime; techniques of neutralization; ; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP;

   Abstract : Criminological studies have shown that economical and/or occupational crimes are committed within all examined trades and occupations. This is also a fact in the gendered occupational context the Norwegian and Swedish long-distance trucking trade constitutes. READ MORE

7. 5. Oversampled radial basis function methods for solving partial differential equations

   Author : Igor Tominec; Elisabeth Larsson; Bengt Fornberg; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; radial basis function; PDE; oversampling; stability; RBF-FD; RBF-PUM; unfitted;

   Abstract : Partial differential equations (PDEs) describe complex real-world phenomena such as weather dynamics,  object deformations, financial trading prices, and fluid-structure interaction.  The solutions of PDEs are commonly used to enhance the understanding of these phenomena and also as leverage to make technological improvements to consumer products. READ MORE