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Design, modelling and simulation of 2 novel 6 DOF hybrid machines.
(2012)
Industrial robot arms are an essential part of automated manufacturing, and perform tasks
such as component assembly, welding, light machining, spray painting, etc. They are highly
repeatable, can be calibrated to be ...
End-pumped solid-state lasers.
(2010)
This dissertation consists of four sections, with the focus on near- and mid-infrared lasers using Yttrium Lithium Fluoride (YLF) crystals doped with various rare-earth ions as a gain medium. As introduction a general ...
Clifford-Fischer theory applied to certain groups associated with symplectic, unitary and Thompson groups.
(2012)
The character table of a finite group is a very powerful tool to study the groups and to prove
many results. Any finite group is either simple or has a normal subgroup and hence will be of
extension type. The classification ...
An institutional analysis of South Africa's new cooperative act : evidence from selected case studies in KwaZulu-Natal.
(2010)
Cooperatives are a means through which farmers may gain economic power by reducing unit transaction costs associated with production, marketing and distribution of products. In South Africa, cooperatives are promoted as a ...
Analysis of mixed convection in an air filled square cavity.
(2010)
A steady state two-dimensional mixed convection problem in an air filled square unit cavity has been numerically investigated. Two different cases of heating are investigated and compared. In the first case, the bottom ...
The application of multistate Markov models to HIV disease progression.
(2011)
Survival analysis is a well developed area which explores time to single
event analysis. In some cases, however, such methods may not adequately
capture the disease process as the disease progression may involve ...
Rangeland degradation assessment using remote sensing and vegetation species.
(2011)
The degradation of rangeland grass is currently one of the most serious environmental problems in South Africa. Increaser and decreaser grass species have been used as indicators to evaluate rangeland condition. Therefore, ...
Genetic studies on drought tolerance and grain shattering in rice.
(2010)
Grain yield of rice can be enhanced by breeding for drought tolerance and optimum shattering. New generations of rice, the interspecific fixed lines known to carry more drought tolerance traits, are a potential source for ...
The impacts of woody invasive alien plants on stream hydrogeomorphology in small headwater streams of KwaZulu-Natal.
(2010)
South Africa has a long history of problems with invasive alien species. In an assessment of alien invading plants and water resources in South Africa Versveld et al. (1998) estimated that Invasive Alien Plants (IAPs) in ...
Production and high temperature treatment of syngas.
(2010)
Gas cleaning is an essential step in many chemical processes. The reason for cleaning is to remove components that can damage equipment or inhibit further reactions. The treatment can include the removal of particulates, ...