• Some theoretical comments regarding the run-length properties of the synthetic and runs-rules monitoring schemes – Part 2 : Steady-state 

  Shongwe, Sandile Charles; Graham, Marien Alet (Taylor and Francis, 2018)

  In this paper, the long term (also known as the steady-state mode) run-length theoretical properties of the four different types of synthetic and runs-rules monitoring schemes, that were empirically analysed in part 1 of ...
• Some theoretical comments regarding the run-length properties of the synthetic and runs-rules monitoring schemes – Part 1 : Zero-state 

  Shongwe, Sandile Charles; Graham, Marien Alet (Taylor and Francis, 2018)

  In this paper, we discuss the short-term (also known as zero-state mode) run-length theoretical properties of the four different types of synthetic and runs-rules monitoring schemes that were empirically analyzed in another ...
• Probabilistic SEM : an augmentation to classical Structural Equation Modelling 

  Yoo, Keunyoung (University of Pretoria, 2018)

  Structural equation modelling (SEM) is carried out with the aim of testing hypotheses on the model of the researcher in a quantitative way, using the sampled data. Although SEM has developed in many aspects over the past ...
• Linking trust and collaboration in project teams to project management success 

  Bond-Barnard, T.J. (Taryn Jane); Fletcher, Lizelle; Steyn, Herman (Emerald, 2018)

  PURPOSE : The purpose of this paper is to emphasise the importance of high levels of trust and collaboration for increasing the likelihood of project management (PM) success. However, the link between these three constructs ...
• The use of negative pressure wave treatment in athlete recovery 

  Jansen van Rensburg, Audrey; Janse van Rensburg, Dina Christina; Van Buuren, H E.; Grant, C.C. (Catharina Cornelia); Fletcher, Lizelle (Health and Medical Publishing Group, 2017)

  BACKGROUND : Athletes need to recover fully to maximise performance in competitive sport. Athletes who replenish more quickly and more efficiently are able to train harder and more intensely. Elite athletes subjectively ...
• On the use of Lèvy processes in option pricing 

  Kwinje, Clemence Rangarirai (University of Pretoria, 2018)

  In this dissertation, we t various nancial models to observed stock prices and we calculate the option prices under each of these models. All of the models considered are based on Lévy processes, which are processes with ...
• A spatial variant of the Gaussian mixture of regressions model 

  Delport, Marion (University of Pretoria, 2018)

  In this study the nite mixture of multivariate Gaussian distributions is discussed in detail including the derivation of maximum likelihood estimators, a discussion on identi ability of mixture components as well as a ...
• Oral, maxillofacial and dental diseases in captive cheetahs (Acinonyx jubatus) 

  Steenkamp, Gerhardus; Boy, S.C.; Van Staden, Paul Jacobus; Bester, Marthan Nieuwoudt (Elsevier, 2018-01)

  Descriptions of several oral, maxillofacial and dental conditions/diseases exist for a variety of captive large felids, but little is reported on the pathology of free roaming large felids. Apart from focal palatine erosions ...
• The injury and illness profile of male and female participants in a 94.7 km cycle race : a cross-sectional study 

  Breedt, Mia; Janse van Rensburg, Dina Christina; Fletcher, Lizelle; Grant, C.C. (Catharina Cornelia); Schwellnus, Martin Peter (Lippincott Williams and Wilkins, 2018)

  OBJECTIVE : To describe the incidence and patterns of injury and illness of male and female participants during a 94.7 km distance cycling event. DESIGN : Descriptive study. SETTING : Momentum 94.7 Cycle Challenge 2014. ...
• Learner-to-teacher bullying as a potential factor influencing teachers’ mental health 

  Woudstra, Marit Helen; Janse van Rensburg, Estie; Visser, M.J. (Maretha Johanna); Jordaan, J.C. (Joyce) (Education Association of South Africa, 2018-02)

  Learner-to-teacher bullying is a focus area that has not been widely researched. The current research, underpinned by the ecosystemic paradigm, examined the proportion of teachers who reported exposure to bullying by ...
• Advances in Wishart type modeling for channel capacity 

  Ferreira, J.T. (Johannes); Bekker, Andriette, 1958-; Arashi, Mohammad (National Statistical Institute of Portugal, 2018)

  This paper paves the way when the assumption of normality is challenged within the wireless communications systems arena. Innovative results pertaining to the distributions of quadratic forms and their associated eigenvalue ...
• The prevalence, risk factors predicting injury and the severity of injuries sustained during competition in professional mixed martial arts in Africa 

  Venter, Santa-Marie; Janse van Rensburg, Dina Christina; Fletcher, Lizelle; Grant, C.C. (Catharina Cornelia) (Health and Medical Publishing Group, 2017)

  BACKGROUND : Professional mixed martial arts (MMA) has gained international popularity. No African-based studies have reported the prevalence or severity of injuries, risk factors associated with injuries or return-to-play ...
• The effect of methylphenidate-OROS® on the narrative ability of children with attention-deficit hyperactivity disorder 

  Rausch, Tessa L.; Kendall, D.L. (Diane); Kover, Sara T.; Louw, Elizabeth M.; Zsilavecz, Ursula Louise; Van der Merwe, Anita (AOSIS OpenJournals, 2017-02-27)

  BACKGROUND AND OBJECTIVE : Children with attention-deficit hyperactivity disorder (ADHD) experience difficulty with expressive language, including form (e.g. grammatical construction) and content (e.g. coherence). The ...
• Email communication in project management : a bane or a blessing? 

  Smit, Marius C.; Bond-Barnard, T.J. (Taryn Jane); Steyn, Herman; Fabris-Rotelli, Inger Nicolette (AOSIS, 2017-08-11)

  BACKGROUND : Project success used to be measured solely in terms of efficiency metrics such as scope, cost and time; however, there are proposals that more attention should be paid to process-related performance factors ...
• Bayesian kernel density estimation 

  Rademeyer, Estian (University of Pretoria, 2018-02-15)

  This dissertation investigates the performance of two-class classi cation credit scoring data sets with low default ratios. The standard two-class parametric Gaussian and naive Bayes (NB), as well as the non-parametric ...
• Inheritance of phenotypic traits in the progeny of a Ceratocystis interspecific cross 

  Fourie, Arista; Wingfield, Michael J.; Wingfield, Brenda D.; Van der Nest, Magrieta Aletta; Loots, Mattheus Theodor; Barnes, Irene (Elsevier, 2018-07)

  Ceratocystis fimbriata is a fungal plant pathogen that causes black rot on Ipomoea batatas. Based on inoculation studies on numerous tree species, the pathogen is known to be host specific. The closely related species, ...
• A comparative study of the psychological problems of HIV-infected and HIV-uninfected children in a South African sample 

  Visser, M.J. (Maretha Johanna); Hecker, H.E.; Jordaan, J.C. (Joyce) (Taylor and Francis, 2018-01)

  According to research children living with HIV experience elevated levels of depression, anxiety, ADHD and disruptive behavioural disorders. Although South Africa’s paediatric population that is infected with the human ...
• Identifying factors associated with the discharge of male State patients from Weskoppies Hospital 

  Prinsloo, Riaan G.; Swanepoel, Andre; Lippi, Gian (AOSIS, 2017-12-04)

  Background: Designated psychiatric facilities are responsible for the care, treatment and reintegration of State patients. The necessary long-term care places a considerable strain on health-care resources. Resource use ...
• A generally weighted moving average exceedance chart 

  Chakraborty, Niladri; Human, Schalk William; Balakrishnan, Narayanaswamy (Taylor and Francis, 2018-03)

  Distribution-free control charts gained momentum in recent years as they are more efficient in detecting a shift when there is a lack of information regarding the underlying process distribution. However, a distribution-free ...
• Nonparametric signed‐rank control charts with variable sampling intervals 

  Coelho, M.L.I.; Graham, Marien Alet; Chakraborti, Subhabrata (Wiley, 2017-12)

  Variable sampling interval (VSI) charts have been proposed in the literature for normal theory (parametric) control charts and are known to provide performance enhancements. In the VSI setting, the time between monitored ...

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