Now showing items 79-98 of 370

    • Component-based face recognition. 

      Dombeu, Jean Vincent Fonou. (2008)
      Component-based automatic face recognition has been of interest to a growing number of researchers in the past fifteen years. However, the main challenge remains the automatic extraction of facial components for recognition ...
    • Computational study of high order numerical schemes for fluid-structure interaction in gas dynamics. 

      Pedro, Jose Caluyna. (2013)
      Solving the fluid-structure interaction (FSI) problems is particularly challenging. This is because the coupling of the fluid and structure may require different solvers in different points of the solution domain, and with ...
    • Computer assisted education : design, development and evaluation. 

      Murrell, Katherine Ann. (2001)
      Educational institutions throughout the world are increasingly facing classes of educationally, culturally and linguistically diverse student groups. At the same time economic constraints require these institutions to ...
    • A computer mediated system for distance education. 

      Pillay, Nelishia. (1996)
      A problem currently facing South Africa is the large number of poorly educated or uneducated people in many parts of the country. Distance education has proven to be an apt solution to this problem However, one of the ...
    • Computer simulation of the two body abrasive wear process. 

      Naicker, Theo. (2002)
      New computer technologies are applied to the classical material engineering two-body abrasive wear process. The computer simulation provides an interactive and visual representation of the wear process. The influence of ...
    • Conformal motions in Bianchi I spacetime. 

      Lortan, Darren Brendan. (1992)
      In this thesis we study the physical properties of the manifold in general relativity that admits a conformal motion. The results obtained are general as the metric tensor field is not specified. We obtain the Lie derivative ...
    • Conformal symmetries : solutions in two classes of cosmological models. 

      Moodley, Manikam. (1991)
      In this thesis we study the conformal symmetries in two locally rotationally symmetric spacetimes and the homothetic symmetries of a Bianchi I spacetime. The conformal Killing equation in a class AIa spacetime (MacCallum ...
    • Conformal symmetries and classification in shear-free spherically symmetric spacetimes. 

      Manjonjo, Addial Mackingtosh. (2014)
      In this thesis we study the conformal geometry of static and non-static spherically symmetric spacetimes. We analyse the general solution of the conformal Killing vector equation subject to integrability conditions which ...
    • Conformal symmetry and applications to spherically symmetric spacetimes. 

      Manjonjo, Addial Mackingtosh. (2018)
      In this thesis we study static spherically symmetric spacetimes with a spherical conformal symmetry and a nonstatic conformal factor. We analyse the general solution of the conformal Killing vector equation subject to ...
    • Consequences of architecture and resource allocation for growth dynamics of bunchgrass clones. 

      Tomlinson, Kyle Warwick. (2005)
      In order to understand how bunchgrasses achieve dominance over other plant growth forms and how they achieve dominance over one another in different environments, it is first necessary to develop a detailed understanding ...
    • Continuous symmetries of difference equations. 

      Nteumagne, Bienvenue Feugang. (2011)
      We consider the study of symmetry analysis of difference equations. The original work done by Lie about a century ago is known to be one of the best methods of solving differential equations. Lie's theory of difference ...
    • Count data modelling application. 

      Ibeji, Jecinta Ugochukwu. (2019)
      The rapid increase of total children ever born without a proportionate growth in the Nigerian economy has been a concern and making prediction with count data requires applying appropriate regression model.. As count data ...
    • A covariant approach to LRS-II spacetime matching. 

      Paul, Erwin Roderic. (2017)
      In this thesis we examine the spacetime matching conditions covariantly for Locally Rotationally Symmetric class II (LRS-II) spacetimes, of which spherical symmetry is a special case. We use the semi-tetrad 1+1+2 covariant ...
    • Covariates and latents in growth modelling. 

      Melesse, Sileshi Fanta. (2014)
      The growth curve models are the natural models for the increment processes taking place gradually over time. When individuals are observed over time it is often apparent that they grow at different rates, even though ...
    • Credit derivative valuation and parameter estimation for CIR and Vasicek-type models. 

      Maboulou, Alma Prell Bimbabou. (2013)
      A credit default swap is a contract that ensures protection against losses occurring due to a default event of an certain entity. It is crucial to know how default should be modelled for valuation or estimating of ...
    • D-optimal designs for drug synergy. 

      Kabera, Muregancuro Gaëtan. (2009)
      This thesis is fo cused on the construction of optimal designs for detecting drug interaction using the two-variable binary logistic mo del. Two sp eci c mo dels are considered: (1) the binary two-variable logistic mo del ...
    • Data classification using genetic programming. 

      Dufourq, Emmanuel. (2015)
      Genetic programming (GP), a field of artificial intelligence, is an evolutionary algorithm which evolves a population of trees which represent programs. These programs are used to solve problems. This dissertation ...
    • Debugging and repair of description logic ontologies. 

      Moodley, Kodylan. (2010)
      In logic-based Knowledge Representation and Reasoning (KRR), ontologies are used to represent knowledge about a particular domain of interest in a precise way. The building blocks of ontologies include concepts, relations ...
    • Degree theory in nonlinear functional analysis. 

      Pillay, Paranjothi. (1989)
      The objective of this dissertation is to expand on the proofs and concepts of Degree Theory, dealt with in chapters 1 and 2 of Deimling [28], to make it more readable and accessible to anyone who is interested in the ...
    • The design and simulation of routing protocols for mobile ad hoc networks. 

      Kabeto, Mieso Denko. (2000)
      This thesis addresses a novel type of network known as a mobile ad hoc network. A mobile ad hoc network is a collection of entirely mobile nodes that can establish communication in the absence of any fixed infrastructu ...