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Research Articles (University of Pretoria): Recent submissions

  • Public expenditure and economic sustainability : does institutional quality matter? 
    Kpegba, Silas Apealete; Atisu, Lord Kelvin Kofi; Sarfo, Kelvin Nketiah; Oppong, Clement; Akwaa-Sekyi, Ellis Kofi (Wiley, 2024)
    This study aims to provide an empirical insight into whether institutional quality moderates the impact of public expenditure on economic sustainability among the Sub-Saharan African (SSA) countries. Using a quantitative ...
  • Time-varying parameter four-equation DSGE model 
    Gupta, Rangan; Sun, Xiaojin (De Gruyter, 2024-05)
    We build the time-varying parameter feature into the (Sims, E., J. C. Wu, and J. Zhang. 2023. “The Four-Equation New Keynesian Model.” The Review of Economics and Statistics 105 (4): 931–47) four-equation Dynamic Stochastic ...
  • A search for pulsars around Sgr A* in the first Event Horizon Telescope data set 
    Torne, Pablo; Liu, Kuo; Eatough, Ralph P.; Wongphechauxsorn, Jompoj; Cordes, James M.; Desvignes, Gregory; De Laurentis, Mariafelicia; Kramer, Michael; Ransom, Scott M.; Chatterjee, Shami; Wharton, Robert; Karuppusamy, Ramesh; Blackburn, Lindy; Janssen, Michael; Chan, Chi-kwan; Crew, Geoffrey, B.; Matthews, Lynn D.; Goddi, Ciriaco; Rottmann, Helge; Wagner, Jan; Sanchez, Salvador; Ruiz, Ignacio; Abbate, Federico; Bower, Geoffrey C.; Salamanca, Juan J.; Gomez-Ruiz, Arturo I.; Herrera-Aguilar, Alfredo; Jiang, Wu; Lu, Ru-Sen; Pen, Ue-Li; Raymond, Alexander W.; Shao, Lijing; Shen, Zhiqiang; Paubert, Gabriel; Sánchez-Portal, Miguel; Kramer, Carsten; Castillo, Manuel; Navarro, Santiago; John, David; Schuster, Karl-Friedrich; Johnson, Michael D.; Rygl, Kazi L. J.; Akiyama, Kazunori; Alberdi, Antxon; Alef, Walter; Algaba, Juan Carlos; Anantua, Richard; Asada, Keiichi; Azulay, Rebecca; Bach, Uwe; Baczko, Anne-Kathrin; Ball, David; Balokovic, Mislav; Barrett, John; Baubock, Michi; Benson, Bradford A.; Bintley, Dan; Blundell, Raymond; Bouman, Katherine L.; Boyce, Hope; Bremer, Michael; Brinkerink, Christiaan D.; Brissenden, Roger; Britzen, Silke; Broderick, Avery E.; Broguiere, Dominique; Broguiere, Dominique; Bronzwaer, Thomas; Bustamante, Sandra; Byun, Do-Young; Carlstrom, John E.; Ceccobello, Chiara; Chael, Andrew; Chang, Dominic O.; Chatterjee, Koushik; Chen, Ming-Tang; Chen (陈永军), Yongjun; Cheng, Xiaopeng; Cho, Ilje; Christian, Pierre; Conroy, Nicholas S.; Conway, John E.; Crawford, Thomas M.; Cruz-Osorio, Alejandro; Cui, Yuzhu; Dahale, Rohan; Davelaar, Jordy; Deane, Roger; Dempsey, Jessica; Dexter, Jason; Dhruv, Vedant; Doeleman, Sheperd S.; Dougal, Sean; Dzib, Sergio A.; Emami, Razieh; Falcke, Heino; Farah, Joseph; Fish, Vincent L.; Fomalont, Ed; Ford, H. Alyson; Foschi, Marianna; Fraga-Encinas, Raquel; Freeman, William T.; Friberg, Per; Fromm, Christian M.; Fuentes, Antonio; Galison, Peter; Gammie, Charles F.; Garcia, Roberto; Gentaz, Olivier; Georgiev, Boris; Gold, Roman; Gomez, Jose L.; Gu (顾敏峰), Minfeng; Gurwell, Mark; Hada, Kazuhiro; Haggard, Daryl; Haworth, Kari; Hecht, Michael H.; Hesper, Ronald; Heumann, Dirk; Ho (何子山), Luis C.; Ho, Paul; Honma, Mareki; Huang, Chih-Wei L.; Huang (黄磊), Lei; Hughes, David H.; Ikeda, Shiro; Impellizzeri, C. M. Violette; Inoue, Makoto; Issaoun, Sara; James, David J.; Jannuzi, Buell T.; Jeter, Britton; Jiménez-Rosales, Alejandra; Jorstad, Svetlana; Joshi, Abhishek, V.; Jung, Taehyun; Karami, Mansour; Kawashima, Tomohisa; Keating, Garrett K.; Kettenis, Mark; Kim, Dong-Jin; Kim, Jae-Young; Kim, Jongsoo; Kim, Junhan; Kino, Motoki; Koay, Jun Yi; Kocherlakota, Prashant; Kofuji, Yutaro; Koyama, Shoko; Krichbaum, Thomas P.; Kuo, Cheng-Yu; La Bella, Noemi; Lauer, Tod R.; Lee, Daeyoung; Lee, Sang-Sung; Leung, Po Kin; Levis, Aviad; Li (李志远), Zhiyuan; Lico, Rocco; Lindahl, Greg; Lindqvist, Michael; Lisakov, Mikhail; Liu, Jun; Liuzzo, Elisabetta; Lo, Wen-Ping; Lobanov, Andrei P.; Loinard, Laurent; Lonsdale, Colin J.; Marchili, Nicola; Markoff, Sera; Marrone, Daniel P.; Marscher, Alan P.; Marti-Vidal, Ivan; Matsushita, Satoki; Medeiros, Lia; Menten, Karl M.; Michalik, Daniel; Mizuno, Izumi; Mizuno, Yosuke; Moran, James M.; Moriyama, Kotaro; Moscibrodzka, Monika; Muller, Cornelia; Muller, Hendrik; Mus, Alejandro; Musoke, Gibwa; Myserlis, Ioannis; Nadolski, Andrew; Nagai, Hiroshi; Nagar, Neil M.; Nakamura, Masanori; Narayan, Ramesh; Narayanan, Gopal; Natarajan, Iniyan; Nathanail, Antonios; Neilsen, Joey; Neri, Roberto; Ni, Chunchong; Noutsos, Aristeidis; Nowak, Michael A.; Oh, Junghwan; Okino, Hiroki; Olivares, Hector; Ortiz-Leon, Gisela N.; Oyama, Tomoaki; Özel, Feryal; Palumbo, Daniel C. M.; Paraschos, Georgios Filippos; Park, Jongho; Parsons, Harriet; Patel, Nimesh; Pesce, Dominic W.; Piétu, Vincent; Plambeck, Richard; PopStefanija, Aleksandar; Porth, Oliver; Pötzl, Felix M.; Prather, Ben; Preciado-López, Jorge A.; Psaltis, Dimitrios; Pu, Hung-Yi; Ramakrishnan, Venkatessh; Rao, Ramprasad; Rawlings, Mark G.; Rezzolla, Luciano; Ricarte, Angelo; Ripperda, Bart; Roelofs, Freek; Rogers, Alan; Ros, Eduardo; Romero-Canizales, Cristina; Roshanineshat, Arash; Roy, Alan L.; Ruszczyk, Chet; Sanchez-Arguelles, David; Sasada, Mahito; Satapathy, Kaushik; Savolainen, Tuomas; Schloerb, F. Peter; Schonfeld, Jonathan; Small, Des; Sohn, Bong Won; SooHoo, Jason; Souccar, Kamal; Sun, He; Tetarenko, Alexandra J.; Tiede, Paul; Tilanus, Remo P. J.; Titus, Michael; Toscano, Teresa; Traianou, Efthalia; Trent, Tyler; Trippe, Sascha; Turk, Matthew; Van Bemmel, Ilse; van Langevelde, Huib Jan; Van Rossum, Daniel R.; Vos, Jesse; Ward-Thompson, Derek; Wardle, John; Weintroub, Jonathan; Wex, Norbert; Wielgus, Maciek; Wiik, Kaj; Witzel, Gunther; Wondrak, Michael F.; Wong, George N.; Wu, Qingwen; Yadlapalli, Nitika; Yamaguchi, Paul; Yfantis, Aristomenis; Yoon, Doosoo; Young, Andre; Young, Ken; Younsi, Ziri; Yu, Wei; Yuan, Feng; Yuan, Ye-Fei; Zensus, J. Anton; Zhang, Shuo; Zhao, Guang-Yao; Zhao, Shan-Shan (American Astronomical Society, 2023-12-10)
    In 2017 the Event Horizon Telescope (EHT) observed the supermassive black hole at the center of the Milky Way, Sagittarius A* (Sgr A*), at a frequency of 228.1 GHz (λ = 1.3 mm). The fundamental physics tests that even ...
  • Changing the inflation target in emerging markets : the reward of reducing risk 
    Pirozhkova, Ekaterina; Viegi, Nicola (Economics Bulletin, 2023-09-30)
    This paper analyses the effects of change by the South African Reserve Bank (SARB) in its preferred definition of inflation target in July 2017 from a range to a point target. We estimate the implications of this shift ...
  • Management of obesity across women's life course : FIGO best practice advice 
    Maxwell, Cynthia V.; Shirley, Rachelle; O'Higgins, Amy C.; Rosser, Mary L.; O'Brien, Patrick; Hod, Moshe; O'Reilly, Sharleen L.; Medina, Virna P.; Smith, Graeme N.; Hanson, Mark A.; Adam, Sumaiya; Ma, Ronald C.; Kapur, Anil; McIntyre, Harold David; Jacobsson, Bo; Poon, Liona C.; Bergman, Lina; Regan, Lesley; Algurjia, Esraa; McAuliffe, Fionnuala M.; FIGO Committee on Impact of Pregnancy on Long-term Health and the FIGO Division of Maternal and Newborn Health (Wiley, 2023-01)
    Obesity is a chronic, progressive, relapsing, and treatable multifactorial, neurobehavioral disease. According to the World Health Organization, obesity affects 15% of women and has long-term effects on women's health. ...
  • A new global air quality health index based on the WHO air quality guideline values with application in Cape Town 
    Adebayo-Ojo, Temitope Christina; Wichmann, Janine; Arowosegbe, Oluwaseyi Olalekan; Probst-Hensch, Nicole; Schindler, Christian; Kunzli, Nino (Frontiers Media, 2023-10-23)
    OBJECTIVES : This study developed an Air Quality Health Index (AQHI) based on global scientific evidence and applied it to data from Cape Town, South Africa. METHODS : Effect estimates from two global systematic reviews ...
  • Addressing the gap for racially diverse research involvement : the King's model for minority ethnic research participant recruitment 
    Chaudhuri, K.Ray; Podlewska, A.; Lau, Yue Hui; Gonde, C.; McIntosh, A.; Qamar, M.A.; O’Donoghue, S.; Larcombe, K.; Adeeko, M.; Gupta, A.; Bajwah, S.; Lafond, S.; Awogbemila, O.; Van Coller, Riaan; Murtagh, A.M.; Ocloo, J.E. (Elsevier, 2023-12)
    OBJECTIVES : Ethnic minorities (EM) are still underrepresented in research recruitment. Despite wide literature outlining the barriers, enablers and recommendations for driving inclusion and diversity in research, there ...
  • Crossover of engagement among academic staff and students during COVID-19 
    Van der Ross, Melissa Reynell; Olckers, Chantal; Schaap, Pieter (Dove Medical Press, 2023-08-10)
    PURPOSE : Globally, the pandemic had adverse consequences on the engagement and overall well-being of individuals. From a positive psychological perspective, this study drew on processes of social exchange, Kahn’s theory ...
  • An intelligent IoT-based home automation for optimization of electricity use 
    Francis, Antony; Madhusudhanan, Sheema; Jose, Arun Cyril; Malekian, Reza (Wydawnictwo SIGMA, 2023)
    The world is gearing towards renewable energy sources, due to the numerous negative repercussions of fossil fuels. There is a need to increase the efficiency of power generation, transmission, distribution, and use. The ...
  • Gas formation of cobalt and copper in the application of unconstrained Co-Cr-Al-Cu metal powders in submerged arc welding : gas phase thermodynamics and 3D slag SEM evidence 
    Coetsee, Theresa; De Bruin, Frederik (MDPI, 2023-04-05)
    Aluminium metal is not typically added to the submerged arc welding (SAW) process because it is easily oxidised to form unwanted slag in the weld pool. The successful application of aluminium as a de-oxidiser is illustrated ...
  • Botryosphaeriaceae species associated with branch dieback and decline of macadamia trees in South Africa 
    Maduke, Angel N.; Slippers, Bernard; Van der Linde, Elna; Wingfield, Michael J.; Fourie, Gerda (Springer, 2024)
    Botryosphaeriaceae species are important latent pathogens causing diseases on trees utilized in forestry and agriculture. In recent years, there has been an increase in the incidence and severity of branch dieback and ...
  • Hybrid governance and intersectional discrimination : an examination of women's experiences in South Africa 
    Van Dijk, Hilligje Gerritdina; Mangai, Mary S. (Wiley, 2024)
    This research investigates the lived experiences of women in South Africa, focusing on the concept of hybrid governance and intersectional discrimination. Hybrid governance denotes a blend of modern and traditional governance ...
  • Toxoplasmosis epidemic in a population of urbanised allied rock-wallabies (Petrogale assimilis) on Magnetic Island (Yunbenun), North Queensland 
    Bowater, R.O.; Gummow, Bruce; Mackie, T.; Thompson, A.R.; Hayes, D.A.; Goudkamp, K.; Taylor, J.D. (Wiley, 2024-05)
    A mortality event involving 23 allied rock-wallabies (Petrogale assimilis) displaying neurological signs and sudden death occurred in late April to May 2021 in a suburban residential area directly adjacent to Magnetic ...
  • Interspecific transfer of genetic information through polyploid bridges 
    Kauai, Felipe; Bafort, Quinten; Mortier, Frederik; Van Montagu, Marc; Bonte, Dries; Van de Peer, Yves (National Academy of Sciences, 2024-05)
    Hybridization blurs species boundaries and leads to intertwined lineages resulting in reticulate evolution. Polyploidy, the outcome of whole genome duplication (WGD), has more recently been implicated in promoting and ...
  • Empowering rural parents to effectively contribute to their children’s education 
    Morowane, Sam Mokgapego; Marishane, Ramodike Nylon (Education Association of South Africa, 2024-08)
    The high level of inequality in South Africa has widened the gap between rural and urban schools, and the performance of rural schools has been continuously declining compared to urban schools. Poor performance in rural ...
  • Augmentative and alternative communication training : the effect on perceptions of special school teachers 
    Ngcobo, Bathobile Charity; Bornman, Juan (Education Association of South Africa, 2024-08)
    Augmentative and alternative communication (AAC) strategies benefit learners with complex communication needs (CCN) by allowing them to participate, interact and learn. AAC is realised in the South African Education policy; ...
  • Measuring dimensions of teacher resilience in Africa : self-efficacy and teacher efficacy 
    Jonker, Carine; Graham, Marien Alet; Ebersohn, L. (Liesel) (Education Association of South Africa, 2024-08)
    With this article we aimed to contribute evidence on reliable and valid measurement of teacher resilience in an under researched African context and population. Scales from an existing instrument, ENTREEi, were used to ...
  • Performing artists’ career trajectory from a career construction perspective 
    Kleynhans, Ronel; Nel, Petrus; Maree, J.G. (Kobus) (Routledge, 2024)
    The field of performing arts presents an often unpredictable area for career development. Yet many people are drawn to this field as their chosen career trajectory. This study examines the life-career experiences that shape ...
  • Developing operational resilience to navigate transportation disruptions : the role and boundaries of efficiency priority 
    Ataburo, Henry; Ampong, Getrude Effah; Essuman, Dominic (Springer, 2024-09)
    Operational resilience is crucial for navigating the increasing transportation disruption challenges, but building this capability can be expensive and sometimes result in inefficiencies. Meanwhile, firms must prioritize ...
  • Temporal dynamics of plasma catecholamines, metabolic and immune markers, and the corticosterone : DHEA ratio in farmed crocodiles before and after an acute stressor 
    Swanepoel, Andre A.; Truter, Christoff; Viljoen, Francois P.; Myburgh, Jan G.; Harvey, Brian H. (MDPI, 2024-08)
    Commercial crocodilian farms face significant economic and livestock losses attributed to stress, which may be linked to their adopted husbandry practices. The development of appropriate and modernized husbandry guidelines, ...