Due to its great importance, both from the fundamental and from the practical points of view, it is imperative that the concept of entanglement is explored. In this thesis I investigate the connection between information ...
Gaigher, Estelle(University of Pretoria, 2007-02-02)
This study extended existing research on structured problem solving into disadvantaged South African classrooms. Sixteen disadvantaged urban South African high schools participated in a quasi-experimental study to investigate ...
Laurens, Susan(University of Pretoria, 2007-02-06)
The bicyclic substrates 1-oxo-2,8-diaryl-2,5,8-triaza-1<font face="symbol">l</font face>5-phosphabicyclo[3.3.0]-octane 3 were studied before. The molecular rearrangement of the alcoholysis product of 3 (the eight-membered ...
Zander, Claudia; Plastino, Angel Ricardo (Angelo); Casas, Montserrat(American Institute of Physics, 2007-03-16)
There exists an interesting relationship between entanglement and the time evolution of composite quantum systems: quantum entanglement enhances the 'speed' of evolution of certain quantum states, as measured by the time ...
Brink, D.J.; Van den Berg, N.G.; Prinsloo, Linda Charlotta; Hodgkinson, I.J.(American Institute of Physics, 2007-04-07)
In this paper we investigate the reflection of circularly polarized light from the exocuticle of the scarabaeid beetle Gymnopleurus virens. Reflection spectra are deeply modulated, exhibiting a number of relatively narrow ...
Berger, W.A.; Miller, H.G.(American Institute of Physics, 2007-05)
The iterative algorithm recently proposed by Waxman for solving eigenvalue problems, which relies on the method of moments, has been modified to improve its convergence considerably without sacrificing its benefits or ...
Meyer, Walter Ernst(University of Pretoria, 2007-06-18)
Since the development of deep level transient spectroscopy (DLTS) in the 1970’s by Lang and others, the technique has become a powerful analytical tool to characterise the electrical properties of defects in semiconductors. ...
Gaigher, Estelle; Rogan, John M.; Braun, Max Willi Hermann(Taylor & Francis, 2007-07)
A study on the effect of a structured problem-solving strategy on problem-solving skills and conceptual understanding of physics was undertaken with 189 students in 16 disadvantaged South African schools. This paper focuses ...
Kassier, Gunter Horst(University of Pretoria, 2007-08-13)
A fully automated Temperature Dependent Hall (TDH) measurement setup has been assembled for the purposes of this study. This TDH setup is capable of measuring samples in the 20 K to 370 K temperature range. Sample sizes ...
When using Schottky barrier diodes (SBDs) on silicon (Si) to study the thermal stability of radiation-induced defects, point defects injection into the silicon substrate can occur at temperatures where silicidation occurs. ...
Kunert, Herbert W.; Machatine, Augusto Gonçalo Jose; Malherbe, Johan B.; Barnas, J.; Hoffmann, A.; Wagner, M.R.(Elsevier, 2008)
We have examined the effect of Time Reversal Symmetry (TRS) on vibrational modes and on the electronic band structure of Si and Ge. Most of the primary non-interacting modes are not affected by TRS. Only phonons originating ...
Entanglement is closely related to some fundamental features of the dynamics of
composite quantum systems: quantum entanglement enhances the “speed” of evolution of certain quantum states, as measured by the time required ...
Kunert, Herbert W.; Machatine, Augusto Gonçalo Jose; Malherbe, Johan B.; Barnas, J.; Hoffmann, A.; Wagner, M.R.(Elsevier, 2008)
The Space Symmetry and the Time Reversal Symmetry of vibrational modes in Si, Ge and diamond are investigated. Using Space Symmetry we have derived the Lattice Mode Representation. Reducing it onto phonon species we obtain ...
Schonfeldt, Johann-Heinrich Christiaan(University of Pretoria, 2008-04-24)
The maximum entropy principle, pioneered by Jaynes, provides a method for finding the least biased probability distribution for the description of a system or process, given as prior information the expectation values of ...