Browsing Research Articles (University of Pretoria) by Title

Browsing Research Articles (University of Pretoria) by Title

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  • Tracking of marine predators to protect Southern ocean ecosystems 
    Hindell, Mark A.; Reisinger, Ryan Rudolf; Ropert-Coudert, Yan; Huckstadt, Luis A.; Trathan, Philip N.; Bornemann, Horst; Charrassin, Jean-Benoit; Chown, Steven L.; Costa, Daniel P.; Danis, Bruno; Lea, Mary-Anne; Thompson, David; Torres, Leigh G.; Van de Putte, Anton P.; Alderman, Rachael; Andrews-Goff, Virginia; Arthur, Ben; Ballard, Grant; Bengtson, John; Bester, Marthan Nieuwoudt; Blix, Arnoldus Schytte; Boehme, Lars; Bost, Charles-Andre; Boveng, Peter; Cleeland, Jaimie; Constantine, Rochelle; Corney, Stuart; Crawford, Robert J.M.; Dalla Rosa, Luciano; De Bruyn, P.J. Nico; Delord, Karine; Descamps, Sebastien; Double, Mike; Emmerson, Louise; Fedak, Mike; Friedlaender, Ari; Gales, Nick; Goebel, Michael E.; Goetz, Kimberly T.; Guinet, Christophe; Goldsworthy, Simon D.; Harcourt, Rob; Hinke, Jefferson T.; Jerosch, Kerstin; Kato, Akiko; Kerry, Knowles R.; Kirkwood, Roger; Kooyman, Gerald L.; Kovacs, Kit M.; Lawton, Kieran; Lowther, Andrew D.; Lydersen, Christian; Lyver, Phil O’B.; Makhado, Azwianewi B.; Márquez, Maria E.I.; McDonald, Birgitte I.; McMahon, Clive Reginald; Muelbert, Monica; Nachtsheim, Dominik; Nordøy, Erling S.; Olmastroni, Silvia; Phillips, Richard A.; Pistorius, Pierre Anton; Plotz, Joachim; Putz, Klemens; Ratcliffe, Norman; Ryan, Peter G.; Santos, Mercedes; Southwell, Colin; Staniland, Iain; Takahashi, Akinori; Tarroux, Arnaud; Trivelpiece, Wayne; Wakefield, Ewan; Weimerskirch, Henri; Wienecke, Barbara; Xavier, Jose C.; Wotherspoon, Simon; Jonsen, Ian D.; Raymond, Ben (Nature Research, 2020-04)
    Southern Ocean ecosystems are under pressure from resource exploitation and climate change. Mitigation requires the identifcation and protection of Areas of Ecological Signifcance (AESs), which have so far not been ...
  • Tracking progress towards the sustainable development goals in four rural villages in Limpopo, South Africa 
    Wernecke, Bianca; Mathee, Angela; Kunene, Zamantimande; Balakrishna, Yusentha; Kapwata, Thandi; Mogotsi, Mirriam; Sweijd, Neville; Minakawa, Noboru; Wright, Caradee Yael (Ubiquity Press, 2021-02)
    BACKGROUND: Measuring national progress towards the Sustainable Development Goals (SDGs) enables the identification of gaps which need to be filled to end poverty, protect the planet and improve lives. Progress is typically ...
  • Tracking the antigenic evolution of foot-and-mouth disease virus 
    Reeve, Richard; Borley, Daryl W.; Maree, Francois Frederick; Upadhyaya, Sasmita; Lukhwareni, Azwidowi; Esterhuysen, Jan J.; Harvey, William T.; Blignaut, Belinda; Fry, Elizabeth E.; Parida, Satya; Paton, David J.; Mahapatra, Mana (Public Library of Science, 2016-07-22)
    Quantifying and predicting the antigenic characteristics of a virus is something of a holy grail for infectious disease research because of its central importance to the emergence of new strains, the severity of outbreaks, ...
  • Tracking the railway line in-service behaviour through metallurgical and mechanical property characterisation 
    Mwamba, A.; Mabeba, A.D.; Moema, Joseph; Phasha, M. (AOSIS Open Journals, 2021-12)
    Wear, contact-impact, fatigue and corrosion properties are important factors initiating rail track degradation and are composition dependent. This work focuses on the effect of chromium content on the metallurgical and ...
  • Tracking, targeting, and conserving soil biodiversity 
    Guerra, Carlos A.; Bardgett, Richard D.; Caon, Lucrezia; Crowther, Thomas W.; Delgado-Baquerizo, Manuel; Montanarella, Luca; Navarro, Laetitia M.; Orgiazzi, Alberto; Singh, Brajesh K.; Tedersoo, Leho; Vargas-Rojas, Ronald; Briones, Maria J.I.; Buscot, Francois; Cameron, Erin K.; Cesarz, Simone; Chatzinotas, Antonis; Cowan, Don A.; Djukic, Ika; Van den Hoogen, Johan; Lehmann, Anika; Maestre, Fernando T.; Marin, Cesar; Reitz, Thomas; Rillig, Matthias C.; Smith, Linnea C.; De Vries, Franciska T.; Weigelt, Alexandra; Wall, Diana H.; Eisenhauer, Nico (American Association for the Advancement of Science, 2021-01)
    Nature conservation literature and policy instruments mainly focus on the impacts of human development and the benefits of nature conservation for oceans and aboveground terrestrial organisms (e.g., birds and plants) and ...
  • TrackT : accurate tracking of RFID tags with mm-level accuracy using first-order Taylor series approximation 
    Wang, Zhongqin; Ye, Ning; Malekian, Reza; Xiao, Fu; Wang, Ruchuan (Elsevier, 2016-12)
    Radio Frequency Identification (RFID) technology is widely used to achieve indoor object tracking and positioning. Currently, many methods need to deploy a large number of reference tags beforehand and some are limited ...
  • Traction apophysitis of the knee : a case report 
    Malherbe, Kathryn (Elsevier, 2019-01)
    We report a case of a 12-year-old boy who presented with infrapatellar pain, with subsequent diagnosis of traction apophysitis of the knee (Sinding-Larsen-Johansson disease). Conventional radiographs are frequently reported ...
  • Trade and climate change : constructing a multilateral agenda for Africa 
    Vickers, Brendan (Institute for Strategic Studies, University of Pretoria, 2012-05)
    Climate and trade issues lie at the intersection of two of the world's most contested multilateral negotiations--the United Nations Framework Convention on Climate Change and the World Trade Organisation's Doha Round. With ...
  • Trade defence instruments in Africa : possible scenarios for implementation under the TFTA 
    El Taweel, Khaled; Brink, G.F. (Gustav Francois) (Edinburgh University Press, 2018-04)
    Africa is moving towards more economic integration, leading to the conclusion of the Tripartite Free Trade Agreement (TFTA). The trade remedies annex, essential to ensure economic survival of industries in member states, ...
  • Trade liberalisation, competitiveness and the real exchange rate (RER) : an analysis of developments in South Africa during the 1990s 
    Rangasamy, L.; Harmse, Chris (Faculty of Economic and Management Sciences, University of Pretoria, 2003-12)
    This paper tests whether tariff liberalisation has lead to increased competitiveness in the South African economy. The 46 sectors of the South African economy are classified as exportable, importable, importable and ...
  • Trade openness and foreign direct investment in Africa 
    Kandiero, Tonia; Chitiga-Mabugu, Margaret (Juta, 2006-09)
    Africa's share of foreign direct investment (FDI) has lagged behind other regions in the world, despite a sharp increase in FDI inflows to the region in 2001. Factors contributing to this circumstance include perceptions ...
  • Trade uncertainties and the hedging abilities of Bitcoin 
    Bouri, Elie; Gkillas, Konstantinos; Gupta, Rangan (Wiley, 2020-11)
    In this paper, we first estimate the monthly realised correlation, based on daily data, between stock returns of the United States (US) and Bitcoin returns. Then, we relate the realised correlation over the period October ...
  • Trade unions as suppliers of goods and service 
    Barnard, Jacolien; Botha, Monray Marsellus (Juta Law Journals, 2018)
    Trade unions are important vehicles through which social justice is achieved in the South African society. They play a role in the social, political, and economic spheres. Trade unions are powerful institutions and many ...
  • The trade-off between chain performance and fragility considering coordination strategies of agri-food chains : a South African egg chain’s case study 
    Setene, Letlama; Jordaan, Daniel Du Plessis Scheepers (Wageningen Academic Publishers, 2021)
    The mainstream strategy in the coordination of agri-food chains has traditionally focused more on the enhancement of chain performance by adopting lean and highly integrated strategies. These strategies are premised on ...
  • Trade-off or pecking order : evidence from South African manufacturing, mining, and retail firms 
    Moyo, Vusani; Wolmarans, Hendrik Petrus; Brummer, L.M., 1940- (Clute Institute for Academic Research, 2013-08)
    This study tests the trade-off and pecking order hypotheses of corporate financing decisions and estimates the speed of adjustment toward target leverage using a cross-section of 42 manufacturing, 24 mining and 21 retail ...
  • A trade-off study between down-dip and breast mining on the Merensky Reef at Khomanani 2 
    Ferreira, S.J.S. (Southern African Institute of Mining and Metallurgy, 2012-04)
    Anglo American Platinum’s Khomanani 2 shaft changed over from down-dip mining to breast mining in 2004. The changeover was made to ensure that production targets were met, as it was said that predevelopment for down-dip ...
  • Trade-offs between immunity and testosterone in male African ground squirrels 
    O'Brien, Kelsey A.; Waterman, Jane M.; Anderson, W. Gary; Bennett, Nigel Charles (Company of Biologists, 2018-08)
    The immunocompetence handicap hypothesis (ICHH) proposes that testosterone has both beneficial effects on male reproductive potential and negative effects by suppressing the immune system. However, support for the ICHH ...
  • Trade-offs of predation and foraging explain sexual segregation in African buffalo 
    Hay, C.T.; Cross, Paul C.; Funston, Paul J. (Blackwell, 2008)
    Many studies have investigated why males and females segregate spatially in sexually dimorphic species. These studies have focused primarily on temperate zone ungulates in areas lacking intact predator communities, and few ...
  • Tradeoffs between resources and risks shape the responses of a large carnivore to human disturbance 
    Mills, Kirby L.; Belant, Jerrold L.; Beukes, Maya; Droge, Egil; Everatt, Kristoffer T.; Fyumagwa, Robert; Green, David S.; Hayward, Matt W.; Holekamp, Kay E.; Radloff, F.G.T.; Spong, Goran; Suraci, Justin P.; Van der Weyde, Leanne K.; Wilmers, Christopher C.; Carter, Neil H.; Sanders, Nathan J. (Nature Research, 2023-10-17)
    Wide-ranging carnivores experience tradeoffs between dynamic resource availabilities and heterogeneous risks from humans, with consequences for their ecological function and conservation outcomes. Yet, research investigating ...
  • Trading behaviour connectedness across commodity markets : evidence from the hedgers’ sentiment perspective 
    Ji, Qiang; Bahloul, Walid; Geng, Jiang-Bo; Gupta, Rangan (Elsevier, 2020-04)
    This paper analyses the connectedness network for commercial traders’ sentiment across agriculture, energy, metals and livestock futures markets. The findings find that: (a) producer/merchant/processor/user (PMPU) in ...