Department of Applied Mathematics
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Evaluating the effectiveness of neural network techniques in the forecasting of South African basic fuel prices
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT : South Africa has a number of fuel grades available to consumers, one of the most popular being the 95 unleaded standard. The price of this fuel is comprised of many components including transport fees, ... -
Data-driven river flow routing using deep learning: predicting flow along the lower Orange river, Southern Africa
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT : The Vanderkloof Dam, located on the Orange River, is responsible for the water supply to consumers along its 1 400 km reach up to where it flows into the Atlantic Ocean. The Vaal River, which joins the ... -
Ear-based biometric authentication
(Stellenbosch : Stellenbosch University, 2019-04)ENGLISH ABSTRACT : In this thesis novel semi-automated and fully automated ear-based biometric authentication systems are proposed. Within the context of the semiautomated system, a region of interest (ROI) that contains ... -
Computational modelling and optimal control of Ebola virus disease with non-linear incidence rate
(IOP Publishing, 2017)The 2014 Ebola outbreak in West Africa has exposed the need to connect modellers and those with relevant data as pivotal to better understanding of how the disease spreads and quantifying the effects of possible interventions. ... -
Minimum density hyperplanes
(Journal of Machine Learning Research, 2016)Associating distinct groups of objects (clusters) with contiguous regions of high probability density (high-density clusters), is central to many statistical and machine learning approaches to the classification of unlabelled ... -
Transcriptomic profile based cancer disease prediction and patient survival time differentiation
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT : Cancer disease is an abnormal growth of cells, which may be caused by mutations in genes which, as a result, alter the way cells function mainly in the way they grow and divide. Cancer cells are regulated ... -
Systems level cancer disease target identification using tumor microenvironment dynamics
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT : Cancer is the second driving reasons for death around the world. It is an abnormal growth of cells which can migrate and recreate cellular microenvironment and can also be caused by successive alterations ... -
Application of convolutional neural networks to building segmentation in aerial images
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT : Aerial image labelling has found relevance in diverse areas including urban management, agriculture, climate, mining, and cartography. As a result, research efforts have been intensified to find fast ... -
Incompressible flow with variations in density
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT : This study involves the investigation of incompressible flow with variable density. The fact that variable density does not necessarily imply that the flow is compressible, may require some clarification. ... -
Comparison of methods for solving Sylvester systems
(Stellenbosch : Stellenbosch University, 2018-12)ENGLISH ABSTRACT :This thesis serves as a comparative study of numerical methods for solving Sylvester equations, which are linear matrix equations of the form AX + XB + C = 0. These equations have important applications ... -
Hand vein-based biometric authentication with limited training samples
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT : A number of novel hand vein-based biometric authentication systems are proposed. Said systems are non-intrusive and may for example assist with user authentication at automated teller machines. An ... -
Short-term stream flow forecasting and downstream gap infilling using machine learning techniques
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT : Stream flow is an important component in the hydrological cycle and plays a vital role in many hydrological applications. Accurate stream flow forecasts may be used for the study of various hydro-environmental ... -
Automated elephant detection and classification from aerial infrared and colour images using deep learning
(Stellenbosch : Stellenbosch University, 2018-03)ENGLISH ABSTRACT : In this study we attempt to detect and classify elephants in aerial images using deep learning. This is not a trivial task even for a human since elephants naturally blend in with their surroundings, making ... -
Developing a methodology for the assessment of wave energy along the South African Coast
(Stellenbosch : Stellenbosch University, 2018-03-19)ENGLISH ABSTRACT : Ocean wave energy can become one of the alternative energy resources for fossil-fuelled power generation in South Africa. Due to global warming, several studies about the generation of wave energy have ... -
Modifying and generalising the Radon transform for improved curve-sensitive feature extraction
(Stellenbosch : Stellenbosch University, 2017-12-01)ENGLISH ABSTRACT : In this thesis a novel and generic feature extraction protocol that is based on the well-known standard discrete Radon transform (SDRT) is presented. The SDRT is traditionally associated with computerised ... -
Predicting the effect of biofilm growth on the pressure drop over a biofilter
(Stellenbosch : Stellenbosch University, 2017-12)ENGLISH ABSTRACT : Hydrogen sulphide is a poisonous gas produced by several industries. It is therefore crucial to investigate and mathematically model the environmentally friendly biofiltration process, which has the ... -
Die fassinerende meganika van hoppende fietswiele
(LitNet, 2016-05-26)Die gedrag van eksentries-belaaide wiele of hoepels het tydens die afgelope twee dekades aandag geniet, veral met betrekking tot sulke wiele se geneigdheid om te hop. Hier word ’n oorsig gegee oor die verskillende aspekte ... -
Text detection in natural images using convolutional neural networks
(Stellenbosch : Stellenbosch University, 2017-03)ENGLISH ABSTRACT : In this study we attempt to solve the problem of text detection in natural images. This requires us to identify regions in a natural image that contain text. Possible applications range from assistive ... -
Shark identification using the notches in the dorsal fin
(Stellenbosch : Stellenbosch University, 2016-12)ENGLISH ABSTRACT : In order to protect endangered species, such as the Great White shark, a reliable estimate of the population is needed. In counting animals, it is necessary to be able to distinguish between individuals. ... -
Tracking with context
(Stellenbosch : Stellenbosch University, 2016-12-01)ENGLISH ABSTRACT : Tracking in an unconstrained environment presents a difficult challenge. Abrupt object motion, appearance changes, non-rigid objects and occlusion are but a few of the trials faced. To overcome these ...
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