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  • Oil prices and the South African economy : a macro–meso–micro analysis 
    Fofana, Ismael; Chitiga-Mabugu, Margaret; Mabugu, Ramos (Elsevier, 2009-12)
    Three levels of analysis are used to track the channels by which South Africa and its people are impacted by an increase of oil prices, namely the macro-economic level, the meso-economic level and the micro-economic/household ...
  • Oil returns and volatility: The role of mergers and acquisitions 
    Bos, Martijn; Demirer, Riza; Gupta, Rangan; Tiwari, Aviral Kumar (Elsevier, 2018-03)
    This paper provides a novel perspective to the oil-stock market nexus by examining the predictive ability of mergers and acquisitions (M&A) over West Texas Intermediate (WTI) oil returns and volatility using a nonparametric ...
  • Oil shocks and directional predictability of macroeconomic uncertainties of developed economies : evidence from high-frequency data 
    Shahzad, Syed Jawad Hussain; Gupta, Rangan; Demirer, Riza; Pierdzioch, Christian (Wiley, 2022-05)
    Using high-frequency (daily) data on macroeconomic uncertainties and the partial cross-quantilogram approach, we examine the directional predictability of disentangled oil-price shocks for the entire conditional distribution ...
  • Oil shocks and stock market volatility of the BRICS : a GARCH-MIDAS approach 
    Salisu, Afees A.; Gupta, Rangan (Elsevier, 2021-05)
    In this study, we employ the GARCH–MIDAS (Generalised Autoregressive Conditional Heteroskedasticity variant of Mixed Data Sampling) model to investigate the response of stock market volatility of the BRICS group of countries ...
  • Oil shocks and volatility jumps 
    Gkillas, Konstantinos; Gupta, Rangan; Wohar, Mark E. (Springer, 2020-01)
    In this paper, we analyse the role of oil price shocks, derived from expectations of consumers, economists, financial market, and policymakers, in predicting volatility jumps in the S&P500 over the monthly period of ...
  • Oil speculation and herding behavior in emerging stock markets 
    Cakan, Esin; Demirer, Riza; Gupta, Rangan; Marfatia, Hardik A. (Springer, 2019-01)
    This paper explores the relationship between stock and commodity markets from a novel perspective by examining the relationship between speculation in the oil market and investor herding in stock markets. Using firm level ...
  • Oil tail risk and the tail risk of the US Dollar exchange rates 
    Salisu, Afees A.; Olaniran, Abeeb; Tchankam, Jean Paul (Elsevier, 2022-05)
    This study tests both the in-sample and out-of-sample predictive value of oil tail risk for the tail risk of US Dollar exchange rates (USD/CAD, USD/GBP and USD/JPY), where the conditional autoregressive value at risk ...
  • Oil tail risks and the forecastability of the realized variance of oil-price : evidence from over 150 years of data 
    Salisu, Afees A.; Pierdzioch, Christian; Gupta, Rangan (Elsevier, 2022-05)
    We examine the predictive value of tail risks of oil returns for the realized variance of oil returns using monthly data for the modern oil industry (1859:10–2020:10). The Conditional Autoregressive Value at Risk (CAViaR) ...
  • Oil-growth nexus in Nigeria : an ADL-MIDAS approach 
    Tumala, Mohammed M.; Salisu, Afees A.; Atoi, Ngozi V. (Elsevier, 2022-08)
    In this study, we investigate the effect of oil price on the real GDP growth of Nigeria. We contribute to the extant literature on oil price-growth nexus in three ways. First, we employ one of the recently developed Mixed ...
  • Oil-price uncertainty and international stock returns : dissecting quantile-based predictability and spillover effects using more than a century of data 
    Balcilar, Mehmet; Gupta, Rangan; Pierdzioch, Christian (MDPI, 2022-11-11)
    We investigate whether oil-price uncertainty helps forecast the international stock returns of ten advanced and emerging countries. We consider an out-of-sample period of August 1925 to September 2021, with an in-sample ...
  • Oil-price uncertainty and the U.K. unemployment rate : a forecasting experiment with random forests using 150 years of data 
    Gupta, Rangan; Pierdzioch, Christian; Salisu, Afees A. (Elsevier, 2022-08)
    We analyze the predictive role of oil-price uncertainty for changes in the UK unemployment rate using more than a century of monthly data covering the period from 1859 (when the drilling of the first oil well started at ...
  • Oily start towards a medical biotechnology institute. 
    Verschoor, J.A. (Jan Adrianus), 1953-; University of Pretoria, Dept. of Biochemistry. (University of Pretoria, 2012-03-09)
    It is all about bringing scientific discovery in the medical biotechnology field to the bedside of patients who need it, for which an institute is required to transfer the technology from the academic environment into ...
  • Ok, so who wants to colonise my gut? - Overview of probiotics in certain gastro-intestinal disorders 
    Muntingh, George L. (Medpharm Publications, NISC (Pty) Ltd and Cogent, Taylor and Francis Group, 2017)
    Probiotics are being used and perhaps more often than not as a treatment for a variety of gastrointestinal (GI) disorders. With increasing frequency, it is also being advocated as a treatment for several medical conditions, ...
  • The Okavango Delta : the value of tourism 
    Mmopelwa, G.; Blignaut, James Nelson (Faculty of Economic and Management Sciences University of Pretoria, 2006-03)
    In Botswana, tourism is the second most important economic activity after diamond mining and trading. The Okavango Delta in northern Botswana is the largest single tourist centre in the country. This study estimates the ...
  • Okavango Delta, Chobe National Park, Botswana - August 1982 
    Bothma, Jacobus du P.; University of Pretoria. Faculty of Veterinary Science. Dept. of Veterinary Tropical Diseases (2014-03-05)
  • OLA-simple : a software-guided HIV-1 drug resistance test for low-resource laboratories 
    Panpradist, Nuttada; BecK, Ingrid A.; Vrana, Justin; Higa, Nikki; McIntyre, David; Ruth, Parker S.; So, Isaac; Kline, Enos C.; Kanthula, Ruth; Wong-On-Wing, Annie; Lim, Jonathan; Ko, Daisy; Milne, Ross; Rossouw, Theresa M.; Feucht, Ute Dagmar; Chung, Michael; Jourdain, Gonzague; Ngo-Giang-Huong, Nicole; Laomanit, Laddawan; Soria, Jaime; Lai, James; Klavins, Eric D.; Frenkel, Lisa M.; Lutz, Barry R. (Elsevier, 2019-12)
    BACKGROUND : HIV drug resistance (HIVDR) testing can assist clinicians in selecting treatments. However, high complexity and cost of genotyping assays limit routine testing in settings where HIVDR prevalence has reached ...
  • Old Agricultural Building (Artlantis 3D model) 
    Swiegers, Estee; Dey, J.B.; Läuferts, Monika (Department of Architecture, University of Pretoria, 2008-05-26)
    Designed by J B Dey of the Department of Public Works in 1917, this impressive building was only completed in 1921 after the end of the First World War and was officially opened by General Jan Smuts. Initially home to the ...
  • Old Agricultural Building (photos 1) 
    Van Aswegen, Henning; Dey, J.B. (Department of Architecture, University of Pretoria, 2008-09-09)
    Designed by J B Dey of the Department of Public Works in 1917, this impressive building was only completed in 1921 after the end of the First World War and was officially opened by General Jan Smuts. Initially home to the ...
  • Old Agricultural Building (photos 2) 
    Swiegers, Estee; Dey, J.B.; Läuferts, Monika (Department of Architecture, University of Pretoria, 2008-05-22)
    Designed by J B Dey of the Department of Public Works in 1917, this impressive building was only completed in 1921 after the end of the First World War and was officially opened by General Jan Smuts. Initially home to the ...
  • Old Agricultural Building (SketchUp 3D model) 
    Swiegers, Estee; Dey, J.B.; Läuferts, Monika (Department of Architecture, University of Pretoria, 2008-05-26)
    Designed by J B Dey of the Department of Public Works in 1917, this impressive building was only completed in 1921 after the end of the First World War and was officially opened by General Jan Smuts. Initially home to the ...