A5056305338- Advanced Fiber Optic Sensors
- Advanced Fiber Laser Technologies
- Photonic and Optical Devices
- Photonic Crystal and Fiber Optics
- Engineering Education and Curriculum Development
- Per- and polyfluoroalkyl substances research
- Toxic Organic Pollutants Impact
- Hybrid Renewable Energy Systems
- Energy and Environment Impacts
- Semiconductor Lasers and Optical Devices
- Atmospheric chemistry and aerosols
- Biomedical and Engineering Education
- Advanced Aircraft Design and Technologies
- Fuel Cells and Related Materials
- Air Quality and Health Impacts
- Robotics and Sensor-Based Localization
- Structural Health Monitoring Techniques
- Problem and Project Based Learning
- Engineering Education and Pedagogy
- Laser Design and Applications
- Target Tracking and Data Fusion in Sensor Networks
- Integrated Energy Systems Optimization
- Advanced Battery Technologies Research
- Acoustic Wave Resonator Technologies
- Inertial Sensor and Navigation
University of Johannesburg
2016-2025
Delft University of Technology
2023-2024
Netherlands Environmental Assessment Agency
2021
University of Antwerp
2008-2017
University of Pretoria
2017
Institute of Environmental Assessment and Water Research
2010-2015
Consejo Superior de Investigaciones Científicas
2010
Universidade do Estado do Rio de Janeiro
2008
Zuid-Afrikaans Hospital
1993-1994
Deutsches Zentrum für Luft- und Raumfahrt e. V. (DLR)
1992
In 1950, approximately 1.8 billion lived in rural areas and subsequently, population growth averaged 1.0 per cent year, with the result that nearly doubled, reaching 3.4 2018 is expected to peak 2021 at just over billion. Rural villages are lacking behind urban when it come stages of industrial revolutions societal development respect technological advancement. Today, world faced new wave advanced revolution called Industry 4.0. Despite impressive work being implemented successfully create...
The SSP (Shared Socio-economic Pathways) scenarios are intensively used in climate and environmental research to explore uncertain future developments possible response strategies. This paper briefly describes an update of the generated by IMAGE 3.2 model. presents changes method key scenario updates. As such, it serves as a reference for updated with 3.2.
Perfluorooctane sulfonate (PFOS) and other perfluoroalkyl compounds (PFCs) were measured in liver samples from 29 marine tucuxi dolphins Rio de Janeiro state (RJ), Brazil. PFC measurement combined liquid chromatography mass spectrometry, using a CapLC system connected to Quadrupole-LIT spectrometer. PFOS was the only detected it so all samples. concentrations (ng·g−1 dw) of (n = 23) highly contaminated Guanabara Bay (in RJ) varied between 43 2431 as well 76 427 areas RJ than quoted bay 6)....
The aim of the paper is to present a method for evaluating brushless DC motors (BLDC) fixed wing Unmanned Aerial Vehicles (UAVs). Selection BLDC motor, which operates in its efficient region UAV platform's specifications, will affect endurance capabilities platform. A four-constant model presented as means modelling and predicting characteristics motors. Further, physical testing each motor performed on constructed test bench. Validation model's results compared testing. methods provide...
Sinkholes are geohazards that commonly form in karstifiable terrain and an ever-present danger to infrastructure human life. This paper aims answer the question: Can a cover-subsidence sinkhole's volume be determined using fibre Bragg grating sensor strain data machine-learning techniques? Exploratory analysis was conducted on collected from experimental test rig whereby sinkhole formed. It found statistical techniques algorithms assume normality inappropriate when performing phase...
The maritime industry plays a pivotal role in the modern economy, global trade, safety and transportation globally. Due to rapid advancement utilisation of technology field, is increasingly vulnerable cybersecurity threats. last decade saw many instances infrastructure having been exploited or attacked, such as vessels themselves, port supply chain. Each component constituting requires unique system critical operations ensure cybersecurity, however this paper focuses on certain aspects only....
This paper presents the design of a power plant in form 100 W hydrogen fuel cell to provide sufficient maintain steady, level flight for small scale fixed wing unmanned aerial vehicle (UAV). The size is smaller than any other previously used this type application. What makes aircraft unique cell, which will be integrated into UAV achieve objective sustaining using only power. Performances and are evaluated data from laboratory tests.
This paper presents design considerations for a low altitude long endurance solar powered unmanned aerial vehicle (LALE UAV). The addressed include the determination of available power, UAV wing flights and electrical power energy balance UAV. Using these considerations, was designed flight simulated Based on simulation results it is in principle possible to build LALE
The paper presented provides theoretical findings of the critical solar UAV parameters required for prolonged flight. being, battery energy density, wing surface area, total weight and area. are based on two individual models, a an aerodynamic model, which combined to form powered model.
This paper describes how the rural development of a small village was enabled through improvement water security. The Gwakwani in Northern Limpopo province South Africa entirely dependent on diesel powered borehole pump for their supply. cost and unreliability supply resulted limited opportunity growth village. As community enabler, solar-powered installed village, which enhanced availability reliability to community. A second installed, allowed establishment small-scale drip irrigation...
A method for the interfacing of a super capacitor in hybrid vehicle power system is demonstrated. The use Split-Pi bi-directional DC-DC converter proposed to overcome problems large voltage swing capacitors narrow input range motor controllers. topology and operational characteristics are presented. Results from using terminal voltages below above controller drive mode regeneration Gain control demonstrated feed forward by direct computation required gain.
An optical fiber sensor system for localization of a vibrational disturbance along the is presented. The based on serial array identical Fabry-Perot interferometers, formed directly in single mode SMF-28e by pairs Bragg gratings with reflectivity 0.04% each. Interferometers were interrogated an intensity modulated distributed feedback diode laser. We present signal processing algorithm disturbed interferometer and experimental results 14 in-fiber interferometers. Simple configuration use...