College of Science, Engineering and Technology: Recent submissions

  • Towards a security framework for the semantic web 
    Mbaya, Ibrahim Rajab (2009-08-25)
    With the increasing use of the Web and the need to automate, interoperate, and reason about resources and services on the Web, the Semantic Web aims to provide solutions for the future needs of World Wide Web computing. ...
  • Hydrogen and Muonium behaviour in diamond 
    Joseph, Sithole Makgamathe (2009-08-25)
    This work is aimed at the understanding of the dynamical behavior of hydrogen in diamond. The investigation was carried out using Transverse Field muon Spin Rotation (TF-SR) and the Longitudinal Field muon Spin Relaxation ...
  • Static and dynamic traversable wormholes 
    Adamiak, Jaroslaw Pawel (2009-08-25)
    The aim of this work is to discuss the effects found in static and dynamic wormholes that occur as a solution of Einstein equations in general relativity. The ground is prepared by presentation of "faster than light" ...
  • Modal satisifiability in a constraint logic environment 
    Stevenson, Lynette (2009-08-25)
    The modal satisfiability problem has to date been solved using either a specifically designed algorithm, or by translating the modal logic formula into a different class of problem, such as a first-order logic, a ...
  • High level waste system impacts from acid dissolution of sludge 
    Ketusky, Edward Thomas (2009-08-25)
    Currently at the Savannah River Site (SRS), there are fifteen single-shell, 3.6-million liter tanks containing High Level Waste. To close the tanks, the sludge must be removed. Mechanical methods have had limited success. ...
  • Geometric Steiner minimal trees 
    De Wet, Pieter Oloff (2009-08-25)
    In 1992 Du and Hwang published a paper confirming the correctness of a well known 1968 conjecture of Gilbert and Pollak suggesting that the Euclidean Steiner ratio for the plane is 2/3. The original objective of this ...
  • Applying mobile agents in an immune-system-based intrusion detection system 
    Zielinski, Marek Piotr (2009-08-25)
    Nearly all present-day commercial intrusion detection systems are based on a hierarchical architecture. In such an architecture, the root node is responsible for detecting intrusions and for issuing responses. However, an ...
  • The fractal geometry of Brownian motion 
    Potgieter, Paul (2009-08)
    After an introduction to Brownian motion, Hausdorff dimension, nonstandard analysis and Loeb measure theory, we explore the notion of a nonstandard formulation of Hausdorff dimension. By considering an adapted form of the ...
  • Researching the effects of culture on usability 
    Ford, Gabrielle (2005-01)
    An experiment was conducted to determine the effects of subjective culture on the usability of computerized systems. The results of the experiment did not provide sufficient evidence to conclude that any of the tested ...
  • The predictors of success of computer aided learning of pre-calculus algebra 
    Yushau, Balarabe (2009-08-25)
    Mathematics achievement has been of great concern to researchers involved in mathematics education. This concern has resulted in research seeking to determine for example, the factors that positively or negatively contribute ...
  • Tidal distortion of a neutron star in the vicinity of a black hole 
    Naidoo, Monogaran (2009-08-25)
    We will consider the scenario of the co-rotation of a fluid star (in specific, a neutron star) and a black hole. The neutron star (or primary)is assumed to have constant angular velocity. The tidal effects on the primary ...
  • Maximal nontraceable graphs 
    Singleton, Joy Elizabeth (2009-08-25)
    A graph G is maximal nontraceable (MNT) (maximal nonhamiltonian (MNH)) if G is not traceable (hamiltonian), i.e. does not contain a hamiltonian path (cycle), but G+xy is traceable (hamiltonian) for all nonadjacent vertices ...
  • Linear perturbations of a Schwarzschild black hole 
    Kubeka, Amos Soweto (2013-02)
    We firstly numerically recalculate the Ricci tensor of non-stationary axisymmetric space-times (originally calculated by Chandrasekhar) and we find some discrepancies both in the linear and non-linear terms. However, ...
  • Shock Excited 1720 MHz Masers 
    De Witt, Aletha (2009-08-25)
    1720 MHz OH masers have been detected towards a number of supernova remnants (SNRs) at the shock interface where the SNR slams into the interstellar medium. Models indicate that these masers are shock excited and can only ...
  • An investigation into the application of systematic software reuse in a project-centric organisation 
    Chapman, Mark Jonathon (2009-08-25)
    The software development continues to become more competitive and demanding, placing pressure on developers. Changes in the international political climate have resulted in shrinking military budgets, putting developers ...
  • An information systems auditor's profile 
    Carroll, Mariana (2009-08-25)
    The increasing dependence upon Information Systems (IS) in the last few decades by businesses has resulted in many concerns regarding auditing. Traditional IS auditing has changed from auditing "around the computer" to ...
  • Constructing programs, how children with Attention Deficit Hyperactivity Disorder (ADHD) learn to program 
    Pilkington, Colin Leon (2009-08)
    Many learners find the study of introductory computer programming difficult. This is also true of children with attention deficit hyperactivity disorder (ADHD), and we need an improved understanding of how they learn ...
  • A mathematical explanation of the transition between laminar and turbulent flow in Newtonian fluids, using the Lie groups and finite element methods 
    Goufo, Emile Franc Doungmo (2009-08-25)
    In this scientific work, we use two effective methods : Lie groups theory and the finite element method, to explain why the transition from laminar flow to turbulence flow depends on the variation of the Reynolds number. ...
  • An approach to facilitating the training of mobile agent programmers and encouraging the progression to an agent-oriented paradigm 
    Schoeman, Martha Anna (2009-08-25)
    Mobile agents hold significant benefits for the rapid expansion of Internet applications and current trends in computing. Despite continued interest, the promised deployment has not taken place, indicating a need for a ...
  • The construction of optimal drape surfaces with constrained first and second derivatives 
    Fossati, Reiner Justin (2003-01)
    The need to construct optimal drape surfaces arises in airborne geophysical surveys where it is necessary to fly a safe distance above the ground and within the performance limits of the aircraft used, but as close as ...

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