Browsing Faculty of Science by Title

Now showing items 1272-1291 of 1929

    • Die objektiewe evaluering van geurstowwe 

      Le Roux, J. (Jozua) (Stellenbosch : Stellenbosch University, 1967-03)
      ENGLISH ABSTRACT: no abstract available

    • Observation on animal life on Marion & Prince Edward Islands 

      Van Zinderen Bakker, E. M., Jr. (Project Stellenbosch : Antarctic Legacy, 2011-08-19)
      Article published in The South African Journal of Science by E.M Van Zinderen Bakker Jr. June 1967, p.242-246. The article reflects his observations on the animal life on Marion and Prince Edward Islands during his research ...

    • Off-line signature verification 

      Coetzer, Johannes (Stellenbosch : University of Stellenbosch, 2005-03)
      A great deal of work has been done in the area of off-line signature verification over the past two decades. Off-line systems are of interest in scenarios where only hard copies of signatures are available, especially ...

    • Off-line signature verification using classifier ensembles and flexible grid features 

      Swanepoel, Jacques Philip (Stellenbosch : University of Stellenbosch, 2009-12)
      ENGLISH ABSTRACT: In this study we investigate the feasibility of combining an ensemble of eight continuous base classifiers for the purpose of off-line signature verification. This work is mainly inspired by the process ...

    • Off-line signature verification using ensembles of local Radon transform-based HMMs 

      Panton, Mark Stuart (Stellenbosch : Stellenbosch University, 2011-03)
      ENGLISH ABSTRACT: An off-line signature verification system attempts to authenticate the identity of an individual by examining his/her handwritten signature, after it has been successfully extracted from, for example, ...

    • Old dogmas and new hearts: a role for adult stem cells in cardiac repair? 

      Niesler, Carola U. (Clinics Cardiv Publishing, 2004-08)
      The vast developmental repertoire of embryonic stem cells is well recognised. These primitive stem cells can differentiate in vivo and in vitro into cells of all three embryonic germ layers (endoderm, mesoderm, ectoderm), ...

    • Olfactory communicatiaon : chemical characterization of the interdigital secretion of the black wildebeest, Connochaetes gnou 

      Slade, Desmond (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: The black wildebeest, Connochaetes gnou, is a terriorial animal and although it is not generally accepted, it is believed that it defines its territory by scent marking, using interdigital and preorbital ...

    • Olfactory cue mediated neonatal recognition in sheep, Ovis aries 

      Burger, B. V.; Viviers, Marlize Z.; Le Roux, Neil J.; Morris, John; Bekker, Jan P. I.; Le Roux, Maritha (Springer Verlag, 2011-10)
      The strong bond between ewe and lamb formed shortly after parturition is an important factor in lamb survival. Evidence exists that a ewe can distinguish her lamb by its unique smell, but the constituents of such a putative ...

    • Olfactory ecology 

      Tribe, G. D.; Burger, B. V. (Wiley-Blackwell, 2011)
      INTRODUCTION: As the morning sky over Zululand begins to lighten, and before the intense heat of the sun's rays breaks through the morning mist, the air is filled with the sound of flying dung beetles as they begin to ...

    • On a unified categorical setting for homological diagram lemmas 

      Michael Ifeanyi, Friday (Stellenbosch : Stellenbosch University, 2011-12)
      ENGLISH ABSTRACT: Some of the diagram lemmas of Homological Algebra, classically known for abelian categories, are not characteristic of the abelian context; this naturally leads to investigations of those non-abelian ...

    • On algebraic geometric codes and some related codes 

      Guenda, Kenza (Stellenbosch : University of Stellenbosch, 2006-12)
      The main topic of this thesis is the construction of the algebraic geometric codes (Goppa codes), and their decoding by the list-decoding, which allows one to correct beyond half of the minimum distance. We also consider ...

    • On commutativity and lie nilpoten y in matrix algebras 

      Sehoana, Mahlare Gerald (Stellenbosch : Stellenbosch University, 2015-12)
      ENGLISH ABSTRACT : In this thesis we first discuss the proof by Mirzakhani [9] of Schur's Theorem which gives the maximum number of linearly independent matrices in a commutative algebra of n×n matrices over a field F. An ...

    • On evolutionary algorithms for effective quantum computing 

      Kruger, Markus Gustav (Stellenbosch : Stellenbosch University, 2012-03)
      ENGLISH ABSTRACT: The goal of this thesis is to present evolutionary algorithms, and demonstrate their applicability in quantum computing. As an introduction to evolutionary algorithms, it is applied to the simple but ...

    • On non-archimedean dynamical systems 

      Joyner, Sheldon T (Stellenbosch : Stellenbosch University, 2000-12)
      ENGLISH ABSTRACT: A discrete dynamical system is a pair (X, cf;) comprising a non-empty set X and a map cf; : X ---+ X. A study is made of the effect of repeated application of cf; on X, whereby points and subsets of X ...

    • On providing an efficient and reliable virtual block storage service 

      Esterhuyse, Eben (Stellenbosch : Stellenbosch University, 2001-03)
      ENGLISH ABSTRACT: This thesis describes the design and implementation of a data storage service. Many clients can be served simultaneously in an environment where processes execute on different physical machines and ...

    • On subnormal subgroups in factorized groups 

      Oberholzer, Ria M (Stellenbosch : Stellenbosch University, 2004-04)
      ENGLISH ABSTRACT: In this thesis we give a survey of research done on a problem on subnormal subgroups in factorized groups G = AB, where A and B are two subgroups of G with H a subgroup of A n B which is subnormal in ...

    • On the analysis of refinable functions with respect to mask factorisation, regularity and corresponding subdivision convergence 

      De Wet, Wouter de Vos (Stellenbosch : University of Stellenbosch, 2007-12)
      We study refinable functions where the dilation factor is not always assumed to be 2. In our investigation, the role of convolutions and refinable step functions is emphasized as a framework for understanding various ...

    • On the cloacal region of Anura in particular of larval Ascaphus 

      Van Dijk, D. E. (D. Eddie) (Stellenbosch: University of Stellenbosch, 1959-12)
      ENGLISH ABSTRACT: The ontogeny of the cloacal region of Ascaphus is described from limited larval material (beginning approximately at the stage of hind-limb bud development). A comprehensive series of Bufo angusticeps ...

    • On the coefficients of Drinfeld modular forms of higher rank 

      Basson, Dirk Johannes (Stellenbosch : Stellenbosch University, 2014-04)
      ENGLISH ABSTRACT: Rank 2 Drinfeld modular forms have been studied for more than 30 years, and while it is known that a higher rank theory could be possible, higher rank Drinfeld modular forms have only recently been de ...

    • On the computation of freely generated modular lattices 

      Semegni, Jean Yves (Stellenbosch : Stellenbosch University, 2008-12)
      Please refer to full text for abstract.