A variance shift model for outlier detection and estimation in linear and linear mixed models by Gumedze, Freedom Nkhululeko

“…Likelihood ratio and score test statistics are developed as objective measures for the variance shift estimates. The proposed test statistics initially assume balanced longitudinal data with a Gaussian distributed response variable. …”
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Vulnerability of selected native and invasive woody species to streamflow variability in Western Cape fynbos riparian ecotones by Crous, Casparus Johannes

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Three essays on economic impact assessment of the use of the Heavily Indebted Poor Countries (HIPC) initiative for poverty reduction in Ghana by Osei-Fosu, Anthony Kofi

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Influence of ecosystem variability on the demography and reproductive performance of two Eudyptes penguins, Macaroni and Eastern Rockhopper Penguins, at sub-Antarctic Marion Island... by Dakwa, Farisayi E

“…There was inter-annual variation in pre-breeding variables (arrival dates and mass on arrival) and breeding variables (breeding success and fledging mass) in both penguins which could indicate variability in prey availability and climatic conditions across the breeding seasons from 1994–2019. …”
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The effects of race and assertiveness on active and passive influencing : a four year follow-up by Van der Westhuizen, Varenka

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Shrinkage estimation in ARMA-GARCH regression models with an application in Bitcoin returns

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Studies of the laser thermal probe in cardiovascular disease by Rosenthal, Eric

“…The initial use of optical fibres to transmit laser energy intravascularly was accompanied by a high rate of perforations and the production of inadequate vascular channels when used for recanalisation. …”
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Broad-based black economic empowerment : the holy grail for financial health? A study of companies listed on the Johannesburg Stock Exchange by Dreyer, Jan Adriaan

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Workplace internet leisure browsing, recovery experiences and occupational well-being by Stander, Xander

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The relationship between knowledge creation dimensions and the entrepreneurial performance of a local government institution in South Africa

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A study of the WKY as a rat model of depression by Van Zyl, Petrus Jurgens

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Seedling quality, plant growth and fruit yield and quality of tomato (Solanum lycopersicum L.) in response to Trichoderma harzianum and arbuscular mycorrhizal fungi

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Role of cell membrane integrity and oxidation stress in development of external browning of white seedless table grapes (Vitis vinifera L.) by Botes, Wilhelmina Jacoba

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Multiwavelength studies of classical novae by Aydi, Elias

“…Estimates of the distance and measurements of the line velocities suggest that the nova might be associated with the Sagittarius stream. …”
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Towards an improved understanding of the biomechanical implications and risk of injury of barefoot running by Tam, Nicholas

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Ethnic and political dynamics of poverty, employment, and wages in Kenya by Magero, Joshua

“…Finally, one of the key limitations in this thesis is data limitation, especially with regards the ethnicity variable, which we inferred by from proxies. This might have an impact on the robustness of our result. …”
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Ethnic and political dynamics of poverty, employment, and wages in Kenya by Magero, Joshua

“…Finally, one of the key limitations in this thesis is data limitation, especially with regards the ethnicity variable, which we inferred by from proxies. This might have an impact on the robustness of our result. …”
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Antioxidant properties and cellular protective effects of selected African green leafy vegetables

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Holocene vegetation history and environmental change in the forest-grassland mosaic of the Central Highlands of Madagascar by Razafimanantsoa, Andriantsilavo Hery Isandratana

“…This suggests that a threshold might have been reached, with a resulting shift in vegetation composition. …”
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