• Current steering with sequential stimulation in cochlear implants 

  Roux, Johanie (University of Pretoria, 2017-12)

  Current steering has been proposed to increase place pitch resolution in cochlear implant (CI) users. Many studies have shown that a current steering effect can be achieved when simultaneous stimulation is used (Koch, ...
• Viability of cochlear travelling wave signal processing for cochlear implants 

  Schmidt, Larry (University of Pretoria, 2016-02)

  English: The travelling wave encodes acoustic information by stimulating the auditory nerve fibres. Understanding the travelling wave and its process is important for the development of cochlear implants speech processors. ...
• Signal processing by octopus cells for acoustic and electrical hearing : a modelling study 

  Blignaut, Gertruida Elizabeth (University of Pretoria, 2016-07)

  A computational model of a single octopus cell as well as a population of octopus cells was developed. The models were used to investigate the ability of octopus cells to compensate for the travelling wave delay, remove ...
• The analysis of distributed resources on a load sharing reticulation network 

  Van der Merwe, Carel Aron (University of Pretoria, 2023-12-01)

  Traditional reticulation network designs are outdated, based on single value static yearly maximum demands, and do not consider the dynamic nature of load-side DR installations. The increasing presence of privately driven ...
• Delay- and disruption-tolerant routing algorithms to support human activity on mars 

  Kamps, Jason Jack (University of Pretoria, 2024)

  Deep-space activity is expected to increase rapidly in the coming decades. Most notably, crewed missions to Mars will take place. With humans venturing light minutes away from Earth for the first time, communication becomes ...
• Bi-directional DC-DC converter with energy management and protection capabilities For LVDC grids 

  Doma, Anesu Emmanuel (University of Pretoria, 2024-06)

  The work outlines a framework for enhancing the efficacy of current LVDC microgrid protection techniques. Currently, the two most significant challenges are the detection and interruption of fault currents. The primary aim ...
• Energy-efficient adaptive data rate optimisation scheme for LoRaWAN 

  Kufakunesu, Rachel (University of Pretoria, 2023-11)

  The Internet of Things (IoT) is a paradigm that has revolutionised wireless network technologies worldwide owing to its low power consumption, low cost of deployment, long-range communication, and its ability to accommodate ...
• Non-line-of-sight identification and mitigation for indoor localization using ultra-wideband sensor networks 

  De Carvalho e Silva, Bruno Jorge (University of Pretoria, 2020)

  With the advent of Industry 4.0, indoor localization is central to many applications across multiple domains. Although impulse-radio ultra-wideband (IR-UWB) enables high precision time-of-arrival (TOA) based ranging and ...
• Operational cost and emissions minimisation of a multi-microgrid system through energy management 

  Gildenhuys, Tiaan (University of Pretoria, 2019-12)

  Existing energy management problems for a multi-microgrid (MMG) system only minimise the operational cost. This study proposes a multi-objective operational cost and emissions minimisation (OCEM) problem for a grid-tied ...
• Model-plant mismatch diagnosis using plant model ratios for a grinding mill circuit under model predictive control 

  Mittermaier, Heinz Karl (University of Pretoria, 2023-11-01)

  Model-based controllers often extend improved performance to mineral processing plants by leveraging predictive models to account for system dynamics, handling constraints, adapting to changing conditions, and optimizing ...
• Dense medium separation : A dynamic model and medium loss analysis 

  Lowry, Claire Sarah (University of Pretoria, 2024-02-09)

  In this study, a model of a dense medium separation circuit of an iron ore plant in South Africa is developed, focusing on the flow of medium in the circuit. The model is validated using plant data. The model is used to ...
• Few-shot Learning for Joint Classification of Instrument, Pitch, and Playing Technique of Tones Produced by Bowed String Instruments 

  Kok, Pieter Cornelius (University of Pretoria, 2023-12)

  Instrument playing technique classification is a problem in music information retrieval (MIR) that has only selectively been explored in the context of specific instrumentations or datasets. Classifying playing techniques ...
• The Effect of Temperature Change on the Performance Characteristics of RF PIN Diode Limiters for VHF Applications 

  Botha, Cornelius Johannes (University of Pretoria, 2023-06)

  This work presents the effect of temperature change on the capacitance of GaAs PIN diodes and the resulting change in performance of RF limiters at VHF. Device temperatures were varied between -25 ºC and 100 ºC, with ...
• End-to-end automated speech recognition using a character based small scale transformer architecture. 

  Loubser, Alexander (University of Pretoria, 2024-02-12)

  This study explores the feasibility of constructing a small-scale speech recognition system capable of competing with larger, modern automated speech recognition (ASR) systems in both performance and word error rate (WER). ...
• Specific emitter identification with multiple transmission codes and receivers 

  Diedericks, Lodewicus Johannes (University of Pretoria, 2023)

  This research introduces an specific emitter identification (SEI) system to enhance secure transmission systems, addressing a critical gap in existing studies. Existing studies lack a comprehensive solution for authenticating ...
• An energy-efficient sensing matrix for wireless multimedia sensor networks 

  Skosana, Vusi Josias (University of Pretoria, 2023-08-22)

  A Wireless Multimedia Sensor Network (WMSN) make possible new surveillance applications in environments that traditional systems would not handle, including search and rescue operations after a disaster. However, WMSNs ...
• Low-cost capacitive CMOS capacitive E. Coli biosensor for point-of-need water quality monitoring 

  Andrews, George (University of Pretoria, 2023)

  Exposure to pathogenic Escherichia coli (E. coli) bacteria through contaminated water can cause potentially life-threatening diarrhea and vomiting, and it is a useful water quality indicator. Simulations and experiments ...
• Micro-grid energy optimisation with demand management 

  Louw, Jacobus (University of Pretoria, 2023)

  Pressure on the utility grid and aims to reduce carbon emissions have led to the development of micro-grids. Extensive research has been done to optimally utilise the various energy sources present therein. Demand management ...
• Optimal sizing and control of supercapacitors for cost-effective hybridization of battery-alone energy storage systems 

  Masaki, Mukalu Sandro (University of Pretoria, 2022)

  With growing effects of global warming, batteries have a crucial role to play in supporting global effort to reach carbon neutrality. However, batteries remain prone to early failure. Operational causes of premature ...
• Evaluation and expansion of observable dynamic froth flotation models for control 

  Venter, Jaco-Louis (University of Pretoria, 2023)

  This work builds on existing observable dynamic models of froth flotation circuits, aimed at on-line parameter estimation and model-based control. The models are analysed and two main limitations are identified and ...

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