Sökning: "Lie group analysis"
Visar resultat 1 - 5 av 29 avhandlingar innehållade orden Lie group analysis.
1. Symmetries and conservation laws
Sammanfattning : 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. LÄS MER
2. Polisanmälningar i grundskolan
Sammanfattning : This thesis is about police reports concerning school violence in Sweden involving children below the age of criminal responsibility. Police reports about incidents caused by pupils in Swedish compulsory schools have increased since at least the 1980s. LÄS MER
3. Expressing emotions through vibration for perception and control
Sammanfattning : This thesis addresses a challenging problem: “how to let the visually impaired ‘see’ others emotions”. We, human beings, are heavily dependent on facial expressions to express ourselves. A smile shows that the person you are talking to is pleased, amused, relieved etc. LÄS MER
4. Painlevé analysis and transformations for nonlinear partial differential equations
Sammanfattning : Nonlinear partial differential equations play a fundamental role in the description of many physical models. In order to get a complete understanding of the phenomena which are modeled it is important to obtain exact analytic solutions. LÄS MER
5. Admissible transformations and the group classification of Schrödinger equations
Sammanfattning : We study admissible transformations and solve group classification problems for various classes of linear and nonlinear Schrödinger equations with an arbitrary number n of space variables.The aim of the thesis is twofold. LÄS MER