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  • Semenology training programs : 8 years’ experience 
    Franken, Daniel R.; Aneck-Hahn, Natalie Hildegard; Lombaard, Carl; Kruger, Thinus F. (Elsevier, 2010-04)
    OBJECTIVE: To evaluate the immediate effect of hands-on training on the quality of technical skills of laboratory technicians. DESIGN: Retrospective analytical study. SETTING: Academic institutions and private infertility ...
  • Semi-automated detection of ungulates using UAV imagery and reflective spectrometry 
    De Kock, Meyer Etienne; Pohunek, Vaclav; Hejcmanova, Pavla (Elsevier, 2022-10)
    In the field of species conservation, the use of unmanned aerial vehicles (UAV) is increasing in popularity as wildlife observation and monitoring tools. With large datasets created by UAV-based species surveying, the need ...
  • Semi-automated usability analysis through eye tracking 
    Malan, Katherine M.; Eloff, Jan H.P.; De Bruin, J.A. (Jhani) (Computer Society of South Africa, 2018-07-10)
    Usability of software is a crucial aspect of successful applications and could give one application a competitive edge over another. Eye tracking is a popular approach to usability evaluation, but is time consuming and ...
  • A semi-autonomous cost effective erection method for overhead line towers 
    Jacobs, B.; Desai, Dawood A.; Du Plessis, Lukas (CIGRE, 2021-10)
    Huge costs are associated with the construction of overhead power lines in the Extra High Voltage category. More economical ways to perform the different aspects of line construction are constantly sought. One area of ...
  • Semi-detached married quarters at Onderstepoort : housing 
    ARC-Onderstepoort Veterinary Research (1940)
    Photo of a semi-detached Victorian "arts and crafts" red brick house for married couples at Onderstepoort
  • Semi-detached married quarters at Onderstepoort (different view) : housing 
    ARC-Onderstepoort Veterinary Research (1940)
    Photo of a semi-detached Victorian "arts and crafts" red brick house for married couples at Onderstepoort with a different view
  • Semi-detached married quarters at Onderstepoort : housing 
    ARC-Onderstepoort Veterinary Research (1940)
    Photo of a semi-detached Victorian "arts and crafts" red brick house for married couples at Onderstepoort
  • Semi-global finite-time observers for nonlinear systems 
    Shen, Yanjun; Xia, Xiaohua (Elsevier, 2008-12)
    It is well known that high gain observers exist for single output nonlinear systems that are uniformly observable and globally Lipschitzian. Under the same conditions, we show that these systems admit semi-global and ...
  • Semi-order units in vector lattices 
    Chitanga, Painos (University of Pretoria, 2021)
    The space C(X) of real-valued continuous functions on a topological space X is a vector lattice and a locally convex topological vector space, but what is the interaction between these structures? In the case of a compact ...
  • A semi-parametric density estimation with application in clustering 
    Salehi, Mahdi; Bekker, Andriette, 1958-; Arashi, Mohammad (Springer, 2023-04)
    The idea behind density-based clustering is to associate groups to the connected components of the level sets of the density of the data to be estimated by a nonparametric method. This approach claims some advantages over ...
  • Semi-parametric mixtures of partially linear models 
    Du Randt, Ruan Jean (University of Pretoria, 2022)
    This mini-dissertation considers semi-parametric finite mixtures of partially linear models with Gaussian errors and focuses on the estimation procedure for such models. The semi-parametric structure allows for flexible ...
  • Semi-parametric mixtures of quantile regressions 
    Gouws, Divan (University of Pretoria, 2023)
    Mixtures of quantile regressions are explored through the lens of a kernel density based EM-type algorithm and a newly proposed CEM-type algorithm. This allows the simultaneous clustering and modeling of conditional ...
  • Semi-scavenging poultry as carriers of avian influenza genes 
    Badruzzaman, A.T.M.; Rahman, Md. Masudur; Hasan, Mahmudul; Hossain, Mohammed Kawser; Husna, Asmaul; Hossain, Ferdaus Mohd Altaf; Giasuddin, Mohammed; Uddin, Md. Jamal; Islam, Mohammad Rafiqul; Alam, Jahangir; Eo, Seong-Kug; Fasina, Folorunso Oludayo; Ashour, Hossam M. (MDPI, 2022-02-21)
    Ducks are the natural reservoir of influenza A virus and the central host for the avian influenza virus (AIV) subtype H5N1, which is highly pathogenic. Semi-scavenging domestic ducks allow for the reemergence of new ...
  • Semi-supervised learning approaches for predicting South African political sentiment for local government elections 
    Ledwaba, Mashadi; Marivate, Vukosi (Association for Computing Machinery (ACM), 2022-06)
    This study aims to understand the South African political context by analysing the sentiments shared on Twitter during the local government elections. An emphasis on the analysis was placed on understanding the discussions ...
  • Semi-synthetic analogues of cryptolepine as a potential source of sustainable drugs for the treatment of malaria, human African trypanosomiasis, and cancer 
    Abacha, Yabalu Z.; Forkuo, Arnold Donkor; Gbedema, Stephen Y.; Mittal, Nimisha; Ottilie, Sabine; Rocamora, Frances; Winzeler, Elizabeth A.; Van Schalkwyk, Donelly A.; Kelly, John M.; Taylor, Martin C.; Reader, Janette; Birkholtz, Lyn-Marie; Lisgarten, David R.; Cockcroft, Jeremy K.; Lisgarten, John N.; Palmer, Rex A.; Talbert, Rosemary C.; Shnyder, Steven D.; Wright, Colin W. (Frontiers Media, 2022-04)
    The prospect of eradicating malaria continues to be challenging in the face of increasing parasite resistance to antimalarial drugs so that novel antimalarials active against asexual, sexual, and liver-stage malaria parasites ...
  • Semilinear De Morgan monoids and epimorphisms 
    Wannenburg, Johann Joubert; Raftery, James G. (Springer, 2024-01)
    A representation theorem is proved for De Morgan monoids that are (i) semilinear, i.e., subdirect products of totally ordered algebras, and (ii) negatively generated, i.e., generated by lower bounds of the neutral element. ...
  • Seminal lipid profiling and antioxidant capacity : a species comparison 
    Jakop, Ulrike; Muller, Karin; Muller, Peter; Neuhauser, Stefanie; Rodrıguez, Isabel Callealta; Grunewald, Sonja; Schiller, Jurgen; Engel, Kathrin M. (Public Library of Science, 2022-03-08)
    On their way to the oocyte, sperm cells are subjected to oxidative stress, which may trigger the oxidation of phospholipids (PL). Applying MALDI-TOF MS, HPTLC and ESI-IT MS, we comparatively analyzed the PL compositions ...
  • Seminal transmission of lumpy skin disease virus in heifers 
    Annandale, Cornelius Henry; Holm, Dietmar Erik; Ebersohn, Karen; Venter, Estelle Hildegard (Wiley, 2014-10)
    It is known that lumpy skin disease virus (LSDV) can be shed in bull semen following infection and that artificial insemination (AI) poses a biosecurity risk. It is however not known whether the use of LSDV infected semen ...
  • Semiochemical studies of Gonipterus sp. 2 (Curculionidae) and pheromone-based masstrapping of Nudaurelia clarki (Saturniidae) in South Africa 
    Scheepers, Luki-Marié (University of Pretoria, 2020)
    In this study, we investigated the pheromones of Gonipterus species 2 (Coleoptera: Curculionidae) and Nudaurelia clarki (Lepidoptera: Saturniidae). These insects are two South African plantation pests that have caused ...
  • Semiochemicals from the African weaver ant, Oecophylla longinoda (Hymenoptera: Formicidae) and their repellency on mango fruit flies 
    Bekele, Bethelihem Mekonnen (University of Pretoria, 2021-02-02)
    Fruit flies (Diptera: Tephritidae) include more than 4300 described species associated with fruits and other plant crops of economic importance. The oriental fruit fly, Bactrocera dorsalis (Hendel), endemic to Southeast ...