The development of a mathematical model for the bioextraction of the critical raw material magnesium from mine waste using acidithiobacillus caldus by Raeburn, Yael

“…Using the previously de-termined mineral reactor conditions (0.5% solids loading, τ1 = 14.6 days, pHi = 1), complete extraction of magnesium was achieved at a stock reactor mean residence time (τs) ≥ 10.4 days, establishing an optimal threshold at Vs : 1.4V1. This set-up achieved the same performance as the CSTR with acid in the feed while eliminating the need for synthetic acid. pH control was achieved using a PI controller for the rate of acid addition, for which ITAE tuning parameters were optimised for both disturbance (Kc = 40.7 mol−1.L, τI = 12 h) and set-point changes (Kc = 20 mol−1.L, τI = 326 h). …”
Get full text

Performance Evaluation of Cognitive Radio Spectrum Sensing Techniques through a Rayleigh Fading Channel by Shumba, Josiah

“…In this project, a MATLAB environment test bed is used to simulate the performance for each spectrum sensing technique across a range of signal-to-noise values, through a Rayleigh fading channel with a given set of parameters for channel delay, channel gain and Doppler shift. …”
Get full text

Developing a methodology for reducing diamond breakage within processing plant by Chele, Motsi John

“…Finally, the cone crushers and pan feeders operating philosophy has been improved to start at high speed to achieve choke feed conditions faster and to promote interparticle crushing. The close side settings were also optimized to reduce liner to liner interaction rather enhance particle-to-particle interaction. …”
Get full text

Sorghum grain : development of methodologies for end-use quality evaluation

Get full text

Pricing methods for American options by Duvel, Heimo

Get full text

The Caesarean Section rate at Mowbray Maternity Hospital: Applying Robson's Ten group classification system by Venter, Eben Kruger

“…A period of 7 years has elapsed and it was thought to be an optimal time to repeat a review of the CSR and compare it with the rates from 2009. …”
Get full text

Investigating a novel in vitro embryo culture system – The Walking Egg Affordable Assisted Reproductive Technology

Get full text

Designing multimodal public transport networks using metaheuristics

Get full text
Get full text

Rheological model for paint properties by Moolman, Pieter Lafras

Get full text

Bore sight error analysis in seeker antennas : a fully functional GUI interfaced ray tracing solution by Barnard, Daniel David

Get full text

The development of a vibration absorber for vibrating screens

Get full text
Get full text

Improved Synthesis Techniques for Uniformly-Spaced Planar Arrays

Get full text

Combinatorial evolution of feedforward neural network models for chemical processes by Schmitz, Gregor Peter Josef

Get full text

Nutritional factors associated with oral lesions in HIV disease and TB infection by Phooko, Puleng M. (Puleng Mpopi)

Get full text

State-based decision support for condition shifting of multimodal continuous processes by Noelle, Francois Frieder

Get full text

A generic computer vision human activity recognition tool. by Jacobs, Johannes Jacobus

Get full text

Analysis of RED packet loss performance in a simulated IP WAN

Get full text

Temperature reconstruction and acoustic time of flight determination for boiler furnace exit temperature measurement by Raikes, Geoff

“…An improved reconstruction technique using radial basis functions (RBF) for interpolation and a least squares algorithm is simulated and its performance was compared to cubic spline interpolation, regression and Lagrange interpolation by evaluating its reconstruction accuracy in terms of mean and root-mean-squared (RMS) error when reconstructing set temperature profiles. Various parameters including transceiver positions, grid divisions and time of flight error, are investigated in terms of how they inform acoustic pyrometry implementation. …”
Get full text

A contingent claims analysis of the pricing of rights isssues with discontinuous diffusion processes by Botha, Russel John

Get full text

Satellite change detection in the albany thicket biome by Mahlasi, Craig

“…Finally, it was shown that using meta-learning the TempCNN can be adapted to be robust in shifting domains by learning the most optimal parameter initializations that allow for capturing the invariant embeddings that facilitate generalisation across domains possible.…”
Get full text