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Browsing Conference Publications by Publication Type "Article"

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The 2020 WMO symposium on climatological, meteorological and environmental factors in the COVID-19 pandemic: A special issue from symposium presentations

Author: Sweijd, Neville ; Zaitchik, BF Date: Jun 2021 The COVID-19 pandemic has become one of the great historical events of the modern era, presenting a generational challenge to the world. Questions about the role of weather on SARS-CoV-2 transmission led to the gathering of scientists at an ... Read more
Acceleration of hidden Markov model fitting using graphical processing units, with application to low-frequency tremor classification

Author: Stoltz, M ; Stoltz, George G ; Obara, K ; Wang, T ; Bryant, D Date: Nov 2021 Hidden Markov models (HMMs) are general purpose models for time-series data widely used across the sciences because of their flexibility and elegance. Fitting HMMs can often be computationally demanding and time consuming, particularly when ... Read more
Advancing ecosystem accounting in estuaries: Swartkops Estuary case study

Author: Taljaard, Susan ; Van Niekerk, Lara ; Adams, JB ; Riddin, T Date: Mar 2023 Rapid degradation of ecosystems and loss of ecosystem services have sparked interest in developing approaches to report and integrate such change with socio-economic information systems, such as the System of National Accounts. Here we describe ... Read more
Advocating circular economy in wastewater treatment: Struvite formation and drinking water reclamation from real municipal effluents

Author: Mavhungu, A ; Masindi, Vhahangwele ; Foteinis, S ; Mbaya, R ; Tekere, M ; Kortidis, I ; Chatzisymeon, E Date: Aug 2020 In this pilot study, the circular economy concept in wastewater treatment was examined, through a zero liquid discharge (ZLD) process where struvite was recovered and drinking water was reclaimed. A stage wise approach was followed for struvite ... Read more
Assessing alternative supporting organic materials for the enhancement of water reuse in subsurface constructed wetlands receiving acid mine drainage

Author: Oberholzer, MM ; Oberholster, PJ ; Ndlela, Luyanda L ; Botha-Oberholtster, AM ; Truter, CJ Date: Jun 2022 Acid mine drainage (AMD) is a global problem with severe consequences for the environment. South Africa’s abandoned mines are a legacy from the country’s economic dependence on the mining sector, with consequent negative impacts on ecosystems. ... Read more
Biowaste biorefineries in South Africa: Current status, opportunities, and research and development needs

Author: Sekoa, Patrick T ; Chunilall, Viren ; Msele, K ; Buthelezi, L ; Johakimu, Jonas ; Andrew, Jerome E ; Zungu, M ; Moloantoa, K ; Maningi, N ; Habimana, O ; Swartbooi, Ashton M Date: Dec 2023 As one of the highest carbon-emitting nations, South Africa is working tirelessly to swiftly transition to sustainable technologies in order to strengthen its green economy initiatives. Amongst the technologies that are explored in the ... Read more
Breakthrough studies for the sorption of methylene blue dye from wastewater samples using activated carbon derived from waste banana peels

Author: Ramutshatsha-Makhwedzha, D ; Munyengabe, A ; Mavhungu, ML ; Mbaya, R ; Baloyi, Siwela J Date: May 2023 In the current study, an activated carbon derived from waste banana peel using H2SO4 was applied for the first time in a packed-bed column for methylene blue (MB) dye removal from wastewater. The pore structure and surface of banana peel ... Read more
Building an integrated cyber defence capability for African missions

Author: Mtsweni, Jabu S ; Thaba, James M Date: 2022 Cyberspace has been designated by organizations such as NATO as the fifth domain for battlespace, and many nations are already having and/or building their capabilities in the cyber defence environment in order to protect and defend their ... Read more
Cellulose nanocrystals and snail shell-reinforced polyvinyl alcohol bioplastic films: Additive concentration optimization and mechanical properties assessment

Author: Gbadeyan, Oluwatoyin J ; Fagbemi, Olajumoke D ; Jerome, Andrew E ; Adali, S ; Glen, B ; Sithole, Bishop B Date: Jul 2022 This study focused on modeling and optimization of the concentration of poly (vinyl alcohol) (PVA), cellulose nanocrystals (CNC), snail shell nanoparticles (SSN), and glycerol for the development of bioplastic films. The response surface ... Read more
Computational study of the mechanistic pathway of hydroxyl radical-initiated degradation of disperse red 73 dye

Author: Wahab, OO ; Olasunkanmi, LO ; Govender, Krishna K ; Govender, PP Date: Feb 2022 The mechanisms of hydroxyl radical (·OH) degradation of disperse red 73 (DR73) dye were investigated using density functional theory (DFT) calculations. Comparative feasibility of ·OH attack at the azo (N=N) site or on a > C–N group was ... Read more
A conceptual framework for consumer IS compliance awareness: South African government context

Author: Bredenkamp, IE ; Kritzinger, E ; Herselman, Martha E Date: Jul 2021 The requirement for consumers to divulge personal data to obtain basic products/services from organizations, is becoming the norm. It has, to a large extent, benefitted consumers as it enabled organizations to profile their customers to provide ... Read more
Conceptualising a benefit assessment framework for the South African National Roads Agency Ltd SOC research and development programme

Author: Rust, FC ; Sono, P ; Van Dijk, G G ; Fourie, H ; Smit, Michelle A Date: Sep 2021 In low-income countries Research and Development funding is limited and has to be invested with a view of optimum return, both economic return but also “softer” benefits such as human resource development. The assessment of these benefits is ... Read more
Considering the 'other' in wildlife crime mitigation: A South African strategy case study

Author: Meissner, R ; Gonçalves, Duarte PD Date: Jan 2022 Actors’ worldviews are critical when developing strategies; not every actor holds the same problem perception and solution. This is the case with wildlife trafficking. Not only does the state have an interest in safeguarding South Africa’s ... Read more
Creating pathways to impact: Investing in supply chain and logistics capacity development in Africa

Author: Grobbelaar, S ; Meyer, Isabella A ; Van Eeden, J ; Vandaele, N ; Van Wassenhove, L ; Besiou, M ; Decouterre, C ; Rafter, S ; Nolting, C ; Dondofema, Richmore A Date: Mar 2023 African logistics and supply chain management capabilities are essential to the performance of the continent's commercial and humanitarian supply chains. This study reviewed the challenges for researchers and practitioners in advancing logistics ... Read more
A critical appraisal of various implementation approaches for realtime pothole anomaly detection: Towards safer roads in developing nations

Author: Bello-Salau, H ; Onumanyi, Adeiza J ; Adebiyi, RF ; Adekale, AD ; Bello, RS ; Ajayi, O Date: Oct 2023 Road infrastructure is essential to national security and growth. Potholes on the road surface causes accidents and costly automotive damage. Novel technology that detects potholes and alerts drivers in real time may address this challenge. ... Read more
A DFT study of the chemical reactivity properties, spectroscopy and bioactivity scores of bioactive flavonols

Author: Akintemi, EO ; Govender, Krishna K ; Singh, T Date: Feb 2022 Density function theory calculations was used to determine the molecular parameters, electronic and chemical reactivity descriptors, spectroscopy, and non-linear optical properties, electronic dipole moment, polarizability and hyperpolarizability ... Read more
Disaggregation and assessment of estuarine pressures at the country-level to better inform management and resource protection – the South African experience

Author: Van Niekerk, Lara ; Taljaard, Susan ; Lamberth, SJ ; Adams, JB ; Weerts, Steven P ; MacKay, CF Date: May 2022 Globally, the ability of estuaries to sustain functionality and productivity is deteriorating rapidly under ever-increasing anthropogenic pressures. We present a systematic approach to identify, characterise and rank global pressures affecting ... Read more
Distinguishing tree species from in situ hyperspectral and temporal measurements through ensemble statistical learning

Author: Dudeni-Tlhone, Nontembeko ; Mutanga, O ; Debba, Pravesh ; Cho, Moses A Date: Aug 2023 Hyperspectral sensors capture and compute spectral reflectance of objects over many wavelength bands, resulting in a high-dimensional space with enough information to differentiate between spectrally similar objects. Due to the curse of ... Read more
Domain-specific sentiment analysis of tweets using machine learning methods

Author: Sefara, Tshephisho Joseph ; Rangata, Mapitsi R Date: Dec 2023 Most general sentiment analysers degrade quality when tested on Tweets in the broadcast domain. This domain covers both radio and television broadcast. This paper proposes domain-specific data in the broadcast domain. Furthermore, it proposes ... Read more
Effective management of closed hypereutrophic estuaries requires catchment-scale interventions

Author: Lemley, DA ; Lamberth, SJ ; Manuel, W ; Nunes, M ; Rishworth, GM ; Van Niekerk, Lara ; Adams, JB Date: Jun 2021 Increased nutrient loading associated with rapid population growth is the leading cause of deteriorating water quality in urbanized estuaries globally. Small estuaries are particularly sensitive to changes when connection with the marine ... Read more

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