Browsing Faculty of Natural Science by Title
Now showing items 2063-2082 of 2566
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Revealing the factors that promote divergence in the Bladder Grasshopper Bullacris unicolor (Orthoptera; Pneumoroidea)
(University of the Western Cape, 2019)Variation in sympatric and allopatric populations is believed to be a precursor to eventual speciation. The dispersion of genes from one gene pool into another is prevented by various processes, including the founder effect, ... -
Review of medicine registration system in Tanzania
(University of the Western Cape, 2019)Registration of medicines is an essential function of the national medicine regulatory system of any country. Since the start of the medicine registration system in Tanzania in early 2000s, no systematic review has been ... -
Review of medicine registration system in Tanzania
(University of the Western Cape, 2019)Registration of medicines is an essential function of the national medicine regulatory system of any country. Since the start of the medicine registration system in Tanzania in early 2000s, no systematic review has been ... -
Review of South African genera of the family hexabothriidae price, 1942, parasites of chondrichthyan fishes
(2009)The oligonchoinean monogenean family Hexabothriidae Price, 1942 currently consists of approximately 60 valid species, representing 15 genera. Hexabothriids are gill parasites of chondrichthyan fishes (sharks, rays and ... -
Review of the effectiveness of the medicines regulatory systems in Zambia over the period 1995 to 2015
(University of the Western Cape, 2018)Due to inadequacy of data on the effectiveness of medicines regulatory systems in Zambia, this study was framed. The aim was to evaluate legislative provisions for medicines regulation under three legalregulatory- frameworks ... -
Review of the effectiveness of the medicines regulatory systems in Zambia over the period 1995 to 2015
(University of the Western Cape, 2018)Due to inadequacy of data on the effectiveness of medicines regulatory systems in Zambia, this study was framed. The aim was to evaluate legislative provisions for medicines regulation under three legalregulatory- frameworks ... -
Risk analysis and potential implications of exotic Gyrodactylus species on cultured and wild cyprinids in the Western Cape, South Africa
(University of the Western Cape, 2010)The expansion of the South African aquaculture industry coupled with the lack of effective parasite management strategies may potentially have negative effects on both the freshwater biodiversity and economics of the ... -
Risk based approach of post- approval changes in central America and Dominican republic, identifying opportunities for convergence with EMA and FDA
(University of Western Cape, 2021)In Central American countries (Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica and Panama) and Dominican Republic (DR) the approval timelines for major changes are described ranging from 12 to 18 months, these ... -
A robust audio-based symbol recognition system using machine learning techniques
(University of the Western Cape, 2020-02)This research investigates the creation of an audio-shape recognition system that is able to interpret a user’s drawn audio shapes—fundamental shapes, digits and/or letters— on a given surface such as a table-top using a ... -
Robust computational methods for two-parameter singular perturbation problems
(University of the Western Cape, 2010)This thesis is concerned with singularly perturbed two-parameter problems. We study a tted nite difference method as applied on two different meshes namely a piecewise mesh (of Shishkin type) and a graded mesh (of Bakhvalov ... -
Robust computational methods to simulate slow-fast dynamical systems governed by predator-prey models
(University of the Western Cape, 2019)Numerical approximations of multiscale problems of important applications in ecology are investigated. One of the class of models considered in this work are singularly perturbed (slow-fast) predator-prey systems which ... -
Robust facial expression recognition in the presence of rotation and partial occlusion
(University of Western Cape, 2014)This research proposes an approach to recognizing facial expressions in the presence of rotations and partial occlusions of the face. The research is in the context of automatic machine translation of South African Sign ... -
Robust numerical methods to solve differential equations arising in cancer modeling
(University of the Western Cape, 2020)Cancer is a complex disease that involves a sequence of gene-environment interactions in a progressive process that cannot occur without dysfunction in multiple systems. From a mathematical point of view, the sequence ... -
Robust recognition of facial expressions on noise degraded facial images
(University of the Western Cape, 2011)We investigate the use of noise degraded facial images in the application of facial expression recognition. In particular, we trained Gabor+SVMclassifiers to recognize facial expressions images with various types of noise. ... -
Robust South African sign language gesture recognition using hand motion and shape
(2014)Research has shown that five fundamental parameters are required to recognize any sign language gesture: hand shape, hand motion, hand location, hand orientation and facial expressions. The South African Sign Language ... -
Robust Spectral Methods for Solving Option Pricing Problems
(University of the Western Cape, 2012)Robust Spectral Methods for Solving Option Pricing Problems by Edson Pindza PhD thesis, Department of Mathematics and Applied Mathematics, Faculty of Natural Sciences, University of the Western Cape Ever since the ... -
Rock art in the Northern Cape: the implications of variability in engravings and paintings relative to issues of social context and change in the precolonial past
(2012)This thesis follows and builds upon a previous study at the rock engraving site of Driekopseiland (Morris 2002). The earlier findings are here contrasted with another site in the area, namely Wildebeest Kuil, as a means ... -
The role of aluminium content in the control of the morphology of fly ash based hierarchical zeolite X
(University of the Western Cape, 2015)Coal is the main source of electricity in South Africa, the combustion of which produces a large amount of waste (coal fly ash) annually. The large-scale generation of coal fly ash places major strain on landfills and the ... -
The role of c-reactive protein as a marker for preterm delivery
(University of Western Cape, 2020)Pregnancy associated maternal morbidity and mortality along with adverse pregnancy outcomes have gained momentum over the past few years, particularly in Sub-Saharan Africa and Southern Asia despite the advances in medical ... -
The role of grazers and basal sustrate cover in the control of intertidal algal distribution
(University of the Western Cape, 2006)This study investigated the role of grazing as a possible cause for the upper limit of distribution of algae on a typical South African south coast.