• A homogenously weighted moving average scheme for observations under the effect of serial dependence and measurement inaccuracy 

  Thanwane, Maonatlala; Shongwe, Sandile C.; Aslam, Muhammad; Malela-Majika, Jean-Claude; Albassam, Mohammed (Growing Science, 2021-05-11)

  The combined effect of serial dependency and measurement errors is known to negatively affect the statistical efficiency of any monitoring scheme. However, for the recently proposed homogenously weighted moving average ...
• COVID-19 pandemic in Malawi : did public sociopolitical events gatherings contribute to its first-wave local transmission? 

  Nyasulua, Juliet Charity Yauka; Munthali, Richard Junganiko; Nyondo-Mipando, Alinane Linda; Pandya, Himani; Nyirenda, Laywell; Nyasulu, Peter Suwirakwenda; Manda, S.O.M. (Samuel) (Elsevier, 2021-05)

  INTRODUCTION : The COVID-19 pandemic in Malawi emerged amidst widespread anti-government demonstrations and subsequent mass gatherings. This paper describes the incidence and factors associated with the spread of the ...
• Double sampling monitoring schemes : a literature review and some future research ideas 

  Motsepa, Collen M.; Malela-Majika, Jean-Claude; Castagliola, Philippe; Shongwe, Sandile C. (Taylor and Francis, 2022)

  Adapted from the acceptance sampling field, the double sampling monitoring schemes implement a two-stage strategy to decide whether the process being monitored is in-control or out-of-control. That is, a master sample is ...
• A new CUSUM control chart under uncertainty with applications in petroleum and meteorology 

  Aslam, Muhammad; Shafqat, Ambreen; Albassam, Mohammed; Malela-Majika, Jean-Claude; Shongwe, Sandile Charles (Public Library of Science, 2021-02)

  Please read abstract in the article.
• A hybrid homogeneously weighted moving average control chart for process monitoring : discussion 

  Malela-Majika, Jean-Claude; Shongwe, Sandile Charles; Adeoti, Olatunde Adebayo (Wiley, 2021-12)

  Please read abstract in the article.
• Distribution-free double-sampling precedence monitoring scheme to detect unknown shifts in the location parameter 

  Malela-Majika, Jean-Claude; Shongwe, Sandile Charles; Aslam, Muhammad; Chong, Zhi Lin; Rapoo, Eeva Maria (Wiley, 2021-12)

  In most applications, parametric monitoring schemes are used to monitor the majority of industrial and nonindustrial processes in order to improve the quality of the outputs or services. However, parametric monitoring ...
• Coverage of maternal viral load monitoring during pregnancy in South Africa : results from the 2019 national Antenatal HIV Sentinel Survey 

  Woldesenbet, Selamawit A.; Kufa-Chakezha, Tendesayi; Lombard, Carl; Manda, S.O.M. (Samuel); Cheyip, Mireille; Ayalew, Kassahun; Puren, Adrian (Wiley, 2021-10)

  OBJECTIVES : South Africa has made remarkable progress in increasing the coverage of antiretroviral therapy (ART) among pregnant women; however, viral suppression among pregnant women receiving ART is reported to be low. ...
• Focal palatitis (previously focal palatine erosions) in captive cheetahs (Acinonyx jubatus) 

  Steenkamp, Gerhardus; Boy, Sonja C.; Van Staden, Paul Jacobus; Bester, Marthan Nieuwoudt (Frontiers Media, 2021-07-12)

  Focal palatine erosion (FPE) is a misleading term that is used in the literature to describe inflammatory lesions associated with depressions of the palatal mucosa in cheetah. Cheetahs have large cheek teeth and these ...
• Modelling representative population mobility for COVID-19 spatial transmission in South Africa 

  Potgieter, A.; Fabris-Rotelli, Inger Nicolette; Kimmie, Z.; Dudeni-Tlhone, N.; Holloway, J.P.; Janse van Rensburg, C.; Thiede, Renate Nicole; Debba, P.; Manjoo-Docrat, R.; Abdelatif, N.; Khuluse-Makhanya, S. (Frontiers Media, 2021-10-22)

  The COVID-19 pandemic starting in the first half of 2020 has changed the lives of everyone across the world. Reduced mobility was essential due to it being the largest impact possible against the spread of the little ...
• Upper bounds for the capacity for severely fading MIMO channels under a scale mixture assumption 

  Ferreira, Johannes Theodorus (MDPI, 2021-06-30)

  A cornerstone in the modeling of wireless communication is MIMO systems, where a complex matrix variate normal assumption is often made for the underlying distribution of the propagation matrix. A popular measure of ...
• The prevalence of abnormal Doppler’s of the umbilical artery in a low-risk pregnant population in South Africa 

  Hlongwane, T.M.A.G. (Tsakane); Cronje, Tanita; Nkosi, B.S.S.; Pattinson, Robert Clive (Elsevier, 2021-04)

  BACKGROUND : The assessment of fetal blood flow using Doppler waveform can be used to identify placental insufficiency, and hence is a tool to identify fetuses at risk of stillbirth due to fetal growth restriction (FGR). ...
• National prevalence of coronary heart disease and stroke in South Africa from 1990–2017 : a systematic review and meta-analysis 

  Abdelatif, Nada A.; Peer, Nasheeta; Manda, S.O.M. (Samuel) (Clinics Cardive, 2021-03-26)

  BACKGROUND : South Africa is experiencing an increasing burden of cardiovascular diseases, including coronary heart disease (CHD) and stroke. We aimed to obtain overall national prevalence estimates of CHD and stroke in ...
• Long-term blood pressure trajectories and associations with age and body mass index among urban women in South Africa 

  Wandai, Muchiri E.; Manda, S.O.M. (Samuel); Aagaard-Hansen, Jens; Norris, Shane A. (Clinics Cardive, 2021-07-26)

  BACKGROUND : Blood pressure (BP) is known to increase inevitably with age. Understanding the different ages at which great gains could be achieved for intervention to prevent and control BP would be of public health ...
• Identifying nutrient patterns in South African foods to support national nutrition guidelines and policies 

  Balakrishna, Yusentha; Manda, S.O.M. (Samuel); Mwambi, Henry; Van Graan, Averalda (MDPI, 2021-09)

  Food composition databases (FCDBs) provide the nutritional content of foods and are essential for developing nutrition guidance and effective intervention programs to improve nutrition of a population. In public and ...
• Quantile-based generalized logistic distribution 

  Omachar, Brenda V. (University of Pretoria, 2014)

  This dissertation proposes the development of a new quantile-based generalized logistic distribution GLDQB, by using the quantile function of the generalized logistic distribution (GLO) as the basic building block. This ...
• A simulation study for evaluating the performance of clustering measures in multilevel logistic regression 

  Adam, Nicholas Siame; Twabi, Halima S.; Manda, S.O.M. (Samuel) (BMC, 2021-11-13)

  BACKGROUND : Multilevel logistic regression models are widely used in health sciences research to account for clustering in multilevel data when estimating effects on subject binary outcomes of individual-level and ...
• Measuring preservice teachers’ ethnocentrism : a South African case study 

  West, Joyce Phillis; Evans, Rinelle; Jordaan, J.C. (Joyce) (University of KwaZulu-Natal, School of Education and Development, 2021-12)

  The 21st century can be marked by growing ethnocentrism. Ethnocentrism in education could have detrimental effects on classroom practices and learner performance. With a quantitative, institutional case study research ...
• A novel single composite Shewhart-EWMA control chart for monitoring the process mean 

  Malela-Majika, Jean-Claude; Shongwe, Sandile C.; Castagliola, Philippe; Mutambayi, Ruffin M. (Wiley, 2022-06)

  Please read abstract in the article.
• A multivariate triple exponentially weighted moving average control chart 

  Malela-Majika, Jean-Claude; Chatterjee, Kashinath; Koukouvinos, Christos (Wiley, 2022-06)

  Statistical process monitoring (SPM) is mostly populated with univariate control charts used to monitor a single variable (or quality characteristic). Nowadays, industries and online environments are filled with processes ...
• A comparison of Bayesian spatial models for HIV mapping in South Africa 

  Ayalew, Kassahun Abere; Manda, S.O.M. (Samuel); Cai, Bo (MDPI Publishing, 2021-10-26)

  Despite making significant progress in tackling its HIV epidemic, South Africa, with 7.7 million people living with HIV, still has the biggest HIV epidemic in the world. The Government, in collaboration with developmental ...

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