Browsing Applied Mathematics by Issue Date
Now showing items 120 of 500

Contributions to the study of general relativistic shearfree perfect fluids: an approach involving Cartan's equivalence method, differential forms and symbolic computation
(University of Waterloo, 1993)It has been conjectured that general relativistic shearfree perfect ﬂuids with a barotropic equation of state, and such that the energy density, µ, and the pressure, p, satisfy µ + p ̸= 0, cannot simultaneously be rotating ... 
MultiResolution Approximate Inverses
(University of Waterloo, 1999)This thesis presents a new preconditioner for elliptic PDE problems on unstructured meshes. Using ideas from second generation wavelets, a multiresolution basis is constructed to effectively compress the inverse of the ... 
Contributions to the Study of the Validity of Huygens' Principle for the Nonselfadjoint Scalar Wave Equation on Petrov Type D Spacetimes
(University of Waterloo, 2000)This thesis makes contributions to the solution of Hadamard's problem through an examination of the question of the validity of Huygens'principle for the nonselfadjoint scalar wave equation on a Petrov type D spacetime. ... 
On the Solution of the HamiltonJacobi Equation by the Method of Separation of Variables
(University of Waterloo, 2000)The method of separation of variables facilitates the integration of the HamiltonJacobi equation by reducing its solution to a series of quadratures in the separable coordinates. The case in which the metric tensor is ... 
A Probabilistic Approach to Image Feature Extraction, Segmentation and Interpretation
(University of Waterloo, 2000)This thesis describes a probabilistic approach to imagesegmentation and interpretation. The focus of the investigation is the development of a systematic way of combining color, brightness, texture and geometric features ... 
Two and ThreeDimensional Coding Schemes for Wavelet and FractalWavelet Image Compression
(University of Waterloo, 2001)This thesis presents two novel coding schemes and applications to both two and threedimensional image compression. Image compression can be viewed as methods of functional approximation under a constraint on the amount ... 
Complex Bases, Number Systems and Their Application to FractalWavelet Image Coding
(University of Waterloo, 2002)This thesis explores new approaches to the analysis of functions by combining tools from the fields of complex bases, number systems, iterated function systems (IFS) and wavelet multiresolution analyses (MRA). The ... 
The de BroglieBohm Causal Interpretation of Quantum Mechanics and its Application to some Simple Systems
(University of Waterloo, 2003)The de BroglieBohm causal interpretation of quantum mechanics is discussed, and applied to the hydrogen atom in several contexts. Prominent critiques of the causal program are noted and responses are given; it is argued ... 
WellPosedness of Boundary Control Systems
(Society for Industrial and Applied Mathematics, 20030101)Continuity of the input/output map for boundary control systems is shown through the system transfer function. Our approach transforms the question of continuity of the input/output map of a boundary control system to ... 
Impulsive Control and Synchronization of ChaosGeneratingSystems with Applications to Secure Communication
(University of Waterloo, 2004)When two or more chaotic systems are coupled, they may exhibit synchronized chaotic oscillations. The synchronization of chaos is usually understood as the regime of chaotic oscillations in which the corresponding ... 
Probabilistic Properties of Delay Differential Equations
(University of Waterloo, 2004)Systems whose time evolutions are entirely deterministic can nevertheless be studied probabilistically, <em>i. e. </em> in terms of the evolution of probability distributions rather than individual trajectories. This ... 
The Dynamics of Inhomogeneous Cosmologies
(University of Waterloo, 2004)In this thesis we investigate cosmological models more general than the isotropic and homogeneous FriedmannLemaître models. We focus on cosmologies with one spatial degree of freedom, whose matter content ... 
Multiscale Methods in Image Modelling and Image Processing
(University of Waterloo, 2005)The field of modelling and processing of 'images' has fairly recently become important, even crucial, to areas of science, medicine, and engineering. The inevitable explosion of imaging modalities and approaches ... 
Mutual Information Based Methods to Localize Image Registration
(University of Waterloo, 2005)Modern medicine has become reliant on medical imaging. Multiple modalities, e. g. magnetic resonance imaging (MRI), computed tomography (CT), etc. , are used to provide as much information about the patient as ... 
The modeling of blood rheology in small vessels
(University of Waterloo, 2005)Blood is a dense suspension of flexible red blood cells. In response to a background flow, these cells distribute themselves nonuniformly throughout the vessel. As a result, material properties that are well defined ... 
Synchronization in Heterogeneous Networks of Hippocampal Interneurons
(University of Waterloo, 2005)The hippocampus is one of the most intensely studied brain structures and the oscillatory activity of the hippocampal neurons is believed to be involved in learning and memory consolidation. Therefore, studying rhythm ... 
Detectability of Singularly Perturbed Systems
(University of Waterloo, 2005)A form of detectability, known as the inputoutputtostate stability property, for singularly perturbed systems is examined in this work. This work extends the result of a paper by Christofides & Teel wherein they ... 
Hydrodynamic Modeling of Dielectric Response in Graphene and Carbon Nanotubes
(University of Waterloo, 2006)This thesis studies two important carbon structures, graphene and carbon nanotubes, with the purpose of understanding how their threedimensional electron density distribution affects the way fast ions interact with them. ... 
Stability of Hybrid Singularly Perturbed Systems with Time Delay
(University of Waterloo, 2006)Hybrid singularly perturbed systems (SPSs) with time delay are considered and exponential stability of these systems is investigated. This work mainly covers switched and impulsive switched delay SPSs . Multiple ... 
Consolidation and wave propagation in a porous medium
(University of Waterloo, 2006)Basic diffusion analytical solutions of onedimensional consolidation are presented for the case of a semiinfinite domain. Typical tractions considered include instantaneous loads of the medium with a free boundary ...