Now showing items 1-10 of 68
Multiple outlier detection and cluster analysis of multivariate normal data
(Stellenbosch : Stellenbosch University, 2003-12)
ENGLISH ABSTRACT: Outliers may be defined as observations that are sufficiently aberrant to arouse the suspicion of the analyst as to their origin. They could be the result of human error, in which case they should be ...
Implementation and evaluation of two prediction techniques for the Lorenz time series
(Stellenbosch : Stellenbosch University, 2003-03)
ENGLISH ABSTRACT: This thesis implements and evaluates two prediction techniques used to forecast deterministic chaotic time series. For a large number of such techniques, the reconstruction of the phase space ...
Comparative analysis of predictive equations for transfer processes in different porous structures
(Stellenbosch : Stellenbosch University, 2012-12)
ENGLISH ABSTRACT: Research on transfer processes in various types of porous media has become important for the optimization of high technology engineering devices and processes. In this study the micro-structural parameters ...
Investigating the effect of compression on the permeability of fibrous porous media
(Stellenbosch : Stellenbosch University, 2014-04)
ENGLISH ABSTRACT: Fluid flow through porous media plays an important role in a variety of contexts of which filtration is one. Filtration efficiency of fibrous filters depends on the micro-structural characterization of ...
Laminar flow through isotropic granular porous media
(Stellenbosch : University of Stellenbosch, 2006-12)
An analytical modelling procedure for predicting the streamwise pressure gradient for steady laminar incompressible flow of a Newtonian fluid through homogeneous isotropic granular porous media is introduced. The modelling ...
The crossing number of a graph in the plane
(Stellenbosch : University of Stellenbosch, 2005-03)
Heuristics for obtaining upper bounds on crossing numbers of small graphs in the plane, and a heuristic for obtaining lower bounds to the crossing numbers of large graphs in the plane are presented in this thesis. It is ...
Powered addition as modelling technique for flow processes
(Stellenbosch : University of Stellenbosch, 2010-03)
ENGLISH ABSTRACT: The interpretation – and compilation of predictive equations to represent the general trend – of collected data is aided immensely by its graphical representation. Whilst, by and large, predictive ...
The development of an integrated effectiveness model for aerial targets
(Stellenbosch : University of Stellenbosch, 2007-03)
During the design or acquisition of missile systems the effectiveness of the system needs to be evaluated. Often actual testing is not possible and therefore mathematical models need to be constructed and solved with the ...
Spherical parameterisation methods for 3D surfaces
(Stellenbosch : University of Stellenbosch, 2005-12)
The surface of a 3D model may be digitally represented as a collection of flat polygons in R3. The collection is known as a polygonal mesh. This representation method has become standard in computer graphics.
Spectral difference methods for solving equations of the KdV hierarchy
(Stellenbosch : Stellenbosch University, 2008-03)
The Korteweg-de Vries (KdV) hierarchy is an important class of nonlinear evolution equa- tions with various applications in the physical sciences and in engineering. In this thesis analytical solution methods were used ...