Search for dissertations about: "differential transform method"

Showing result 1 - 5 of 22 swedish dissertations containing the words differential transform method.

2. 1. Numerical Conformal Mappings for Waveguides

   Author : Anders Andersson; Börje Nilsson; Joachim Toft; Michael Benedicks; Växjö universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; waveguide; building block method; numerical conformal mappings; Schwarz–Christoffel mapping; rounded corners method; approximate curve factors; outer polygon method; boundary curvature; zipper method; geodesic algorithm; acoustic wave scattering; electro-magnetic wave scattering; Applied mathematics; Tillämpad matematik; Mathematics; Matematik;

   Abstract : Acoustic or electro-magnetic scattering in a waveguide with varying direction and cross-section can be re-formulated as a two-dimensional scattering problem, provided that the variations take place in only one dimension at a time. By using the so-called Building Block Method, it is possible to construct the scattering properties of a combination of scatterers when the properties of each scatterer are known. READ MORE

4. 2. Some Applications of Variational Inequalities in Mathematical Finance and Numerics

   Author : Martin Dahlgren; Matematik LTH; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Matematik; Mathematics; HJB quasi variational inequalities; option pricing; Impulse control; parabolic PDE; finite element method; Galerkin method;

   Abstract : This thesis contains two parts. The first part deals with a stochastic impulse control problem, subject to the restriction of a minimum time lapse in between interventions made by the controller. We prove existence of an optimal control and show that the value function of the control problem satisfies a system of quasi-variational inequalities. READ MORE

5. 3. Assessment and differential diagnosis in childhood apraxia of speech

   Author : Susanne Rex; Karolinska Institutet; Karolinska Institutet; []
   Keywords : ;

   Abstract : Introduction and aims: Childhood Apraxia of Speech (CAS) is a disorder of speech motor planning and programming affecting the ability to transform the linguistic code into movements needed for intelligible speech. CAS is difficult to differential diagnose from other speech sound disorders (SSDs) and the diagnostic procedure involves many decisions based on outcomes from assessments before arriving at the appropriate diagnosis/es. READ MORE

6. 4. Analysis of Complex Biological Samples using Liquid Chromatography-Fourier Transform Ion Cyclotron Resonance Mass Spectrometry

   Author : Margareta Ramström; Jonas Bergquist; Per Håkansson; Karin Markides; Carol Robinson; Uppsala universitet; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Analytical chemistry; mass spectrometry; liquid chromatography; protein; proteomics; peptide; Fourier transform ion cyclotron resonance mass spectrometry; cerebrospinal fluid; amyotrophic lateral sclerosis; electrospray ionization; electron capture dissociation; Analytisk kemi; Analytical chemistry; Analytisk kemi;

   Abstract : Studies of protein and peptide expression are vital in order to understand complex biological systems. As demonstrated in this thesis, on-line packed capillary liquid chromatography-Fourier transform ion cyclotron resonance mass spectrometry (LC-FTICR MS) is a useful analytical tool for such studies. READ MORE

7. 5. Mathematical Analysis of Forced Convective Flow Due to Stretching Sheet and Instabilities of Natural Convective Flow

   Author : Prashant G Metri; Sergei Silvestrov; Rebei Bel-Fdhila; Mälardalens högskola; []
   Keywords : NATURVETENSKAP; NATURAL SCIENCES; Boundary layer theory; Heat and Mass transfer; Partial differential equations; Stretching sheet; Mathematics Applied Mathematics; matematik tillämpad matematik;

   Abstract : The investigations presented in the thesis are theoretical studies of magnetohydrodynamic flows, heat and mass transfer in Newtonian/non-Newtonian cooling liquids, due to horizontal/vertical stretching sheet. The theoretical studies include the effect of magnetic field, uniform and non-uniform heat source/sink (flow and temperature dependent heat source/sink) effects. READ MORE