In recent years, the position of (post-)millennial girls and young women within the digital landscape of social media has proven to be a topic of much interest to a number of feminists, journalists and cultural commentators. On the one hand, girls’ (social) media practices are p…
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This thesis reports the results of an investigation of the effects of adding Tinuvin\(\char{msam10}{0x72}\)327 to PIC-100 acrylate resin on such important parameters as cure depth, critical energy, part density, dimension accuracy and surface quality. Initially, an experimental …
The thesis focuses on the asteroseismology of main sequence B-type stars, particularly β Cephei and Be stars. Photometric observations of these stars were analysed in order to detect stellar oscillations. The photometric data analysed in this thesis were collected using the Sola…
The use of memory strategies can promote independence in people who have an acquired brain injury but people often do not take readily to using such strategies. Certain demographic variables have been associated with the use of memory strategies these variables cannot be changed…
Currently the extraction of valuable components from oils is of growing interest. Palm fatty acid distillate is a by-product from palm oil refining process which contains valuable minor components. The scope of the present work was to investigate the enrichment of high value low…
Remote electronic voting has long been considered a panacea for many of the problems with existing, paper-based election mechanisms: assurance that one’s vote has been counted as cast; ability to vote without fear of coercion; fast and reliable tallying; improvement in voter tur…
This thesis presents a Cloud-based-Multi-Agent System (Clobmas) that uses multiple double auctions, to enable applications to self-adapt, based on their QoS requirements and budgetary constraints. We design a marketplace that allows applications to select services, in a decentra…
Game Semantics is an approach to denotational semantics that has been successful in providing accurate, fully abstract models for various programming languages. It has thereafter been applied, amongst other things, to model checking, access control analysis, information flow ana…
This thesis reports a new method for stability analysis and maximum time delay estimation in networked control systems with applications to distributed energy systems. The proposed new method is based on using finite difference approximation for the delay term and then the Lyapu…
Many approaches have been proposed for the recognition of mathematical formulae, traditionally using the results of optical character recognition over scanned documents. However, optical character recognition generally performs poorly when presented with mathematics, making it d…
Hollow low density microspheres were prepared by adsorbing kaolin nanoparticles onto a polystyrene (PS) template. A cationic polyelectrolyte, poly(diallydimethylammonium chloride), was initially adsorbed on the PS to render the surface cationic enabling the kaolin nanoparticles …
Segmentation of complex scenes to aid surveillance is still considered an open research problem. In this thesis a computational model (CM) has been developed to classify a scene into foreground, moving-shadow and background regions. It has been demonstrated how the CM, with the …
This thesis investigates the development of the Brazilian vaccine industry. This industry has experienced a sharp growth in the last decades supported by public policies and a protected and fast-growing public market. In addition, this development is apparently characterized by …
The research conducted an Information and Communication Technology (ICT) field survey, the results revealed that Tanzania is still lagging behind in the ICT sector due to the lack of an internationally connected terrestrial ICT infrastructure; Internet connectivity to the rest o…
The thesis appraises certain key processes – albeit rather limited in number and scope – widely assumed to be associated with assessing the role of technological capability building in developing country (DC) firms. The latter are affected by their DC status on both the demand s…
The oxidation resistance of four prototype single crystal nickel-based superalloys for industrial gas turbine applications is studied. All contain greater quantities of Cr than in most existing single crystal superalloys; two are alloyed with Si, one with Re. To explain the resu…
One of the major limiting factors of the CMOS device, circuit and system simulation in sub 100nm regimes is the statistical variability introduced by the discreteness of charge and granularity of matter. The statistical variability cannot be eliminated by tuning the layout or by…
The static and dynamic properties of carbon fibre composites of varying orientation, stacking sequence and geometry has been analysed in terms of modulus and material loss factor up to strain rates applicable to golf club shafts. No noticeable change in modulus or damping was se…
This thesis investigates the incorporation of target phase into sonar signal processing, for enhanced information in the context of acoustical oceanography. A sonar system phase calibration method, which includes both the amplitude and phase response is proposed. The technique i…