Author:Sweijd, Neville; Zaitchik, BFDate:Jun 2021The 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
Author:Stoltz, M; Stoltz, George G; Obara, K; Wang, T; Bryant, DDate:Nov 2021Hidden 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
Author:Taljaard, Susan; Van Niekerk, Lara; Adams, JB; Riddin, TDate:Mar 2023Rapid 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
Author:Oberholzer, MM; Oberholster, PJ; Ndlela, Luyanda L; Botha-Oberholtster, AM; Truter, CJDate:Jun 2022Acid 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
Author:Ramutshatsha-Makhwedzha, D; Munyengabe, A; Mavhungu, ML; Mbaya, R; Baloyi, Siwela JDate:May 2023In 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
Author:Mtsweni, Jabu S; Thaba, James MDate:2022Cyberspace 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
Author:Naicker, Denver; Moodley, MackaylanDate:Mar 2024Self-sovereign identity is an emerging blockchain technology field. Its use cases primarily surround identity and credential management and advocate the privacy of user details during the verification process. Our endeavor was to test and ...Read more
Author:Wahab, OO; Olasunkanmi, LO; Govender, Krishna K; Govender, PPDate:Feb 2022The 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
Author:Bredenkamp, IE; Kritzinger, E; Herselman, Martha EDate:Jul 2021The 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
Author:Rust, FC; Sono, P; Van Dijk, G G; Fourie, H; Smit, Michelle ADate:Sep 2021In 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
Author:Meissner, R; Gonçalves, Duarte PDDate:Jan 2022Actors’ 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
Author:Bello-Salau, H; Onumanyi, Adeiza J; Adebiyi, RF; Adekale, AD; Bello, RS; Ajayi, ODate:Oct 2023Road 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
Author:Akintemi, EO; Govender, Krishna K; Singh, TDate:Feb 2022Density 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
Author:O'Connell, Johannes S; VdM Steyn, WJ; Maina, JDate:Dec 2024Ageing has a profound effect on pavement performance, especially regarding cracking. Due to budgetary constraints, South Africa has pioneered the use of thin asphalt concrete layers. The research described in this paper is based on a short-term ...Read more
Author:Van Niekerk, Lara; Taljaard, Susan; Lamberth, SJ; Adams, JB; Weerts, Steven P; MacKay, CFDate:May 2022Globally, 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
Author:Dudeni-Tlhone, Nontembeko; Mutanga, O; Debba, Pravesh; Cho, Moses ADate:Aug 2023Hyperspectral 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