• Design and implementation issues for a class of distribution-free Phase II EWMA exceedance control charts 

  Graham, Marien Alet; Mukherjee, Amitava; Chakraborti, Subhabrata (Taylor and Francis, 2017)

  Distribution-free (nonparametric) control charts can play an essential role in process monitoring when there is dearth of information about the underlying distribution. In this paper, we study various aspects related to ...
• Probabilistic tsunami hazard assessment from incomplete and uncertain historical catalogues with application to tsunamigenic regions in the Pacific Ocean 

  Smit, Ansie; Kijko, Andrzej; Stein, Alfred (Springer, 2017-08)

  The paper presents a new method for empirical assessment of tsunami recurrence parameters, namely the mean tsunami activity rate λT, the Soloviev–Imamura frequency–magnitude power law bT-value, and the coastline-characteristic, ...
• Weighted-type Wishart distributions with application 

  Arashi, Mohammad; Bekker, Andriette, 1958-; Van Niekerk, Janet (National Statistical Institute of Portugal, 2017)

  In this paper, we consider a general framework for constructing new valid densities regarding a random matrix variate. However, we focus speci cally on the Wishart distribution. The methodology involves coupling the ...
• The stabilizing effect of an oligomeric proanthocyanidin on red blood cell membrane structure of poorly controlled type II diabetes 

  Visser, J.; Van Staden, Paul Jacobus; Soma, Prashilla; Buys, A.V. (Antonia Vergina); Pretorius, E. (Nature Publishing Group, 2017-05-15)

  Type II diabetes (T2D) is a pandemic characterized by pathological circulating inflammatory markers, high-glucose levels and oxidative stress. The hematological system is especially vulnerable to these aberrant circulating ...
• Integrated analysis and transcript abundance modelling of H3K4me3 and H3K27me3 in developing secondary xylem 

  Hussey, Steven G.; Loots, Mattheus Theodor; Van der Merwe, Karen; Mizrachi, Eshchar; Myburg, Alexander Andrew (Nature Publishing Group, 2017-06-13)

  Despite the considerable contribution of xylem development (xylogenesis) to plant biomass accumulation, its epigenetic regulation is poorly understood. Furthermore, the relative contributions of histone modifications to ...
• Kinetic interpretation of log-logistic dose-time response curves 

  Focke, Walter Wilhelm; Van der Westhuizen, Isbe; Musee, Ndeke; Loots, Mattheus Theodor (Nature Publishing Group, 2017-05-22)

  A Hill-type time-response curve was derived using a single-step chemical kinetics approximation. The rate expression for the transformation is a differential equation that provides an interpolation formula between the ...
• Comparing geographic area-based and classical population-based incidence and prevalence rates, and their confidence intervals 

  Chen, Ding-Geng (Din) (Elsevier, 2017-09)

  To quantify the HIV epidemic, the classical population-based prevalence and incidence rates (P rates) are the two most commonly used measures used for policy interventions. However, these P rates ignore the heterogeneity ...
• An ‘apples to apples’ comparison of various tests for exponentiality 

  Visagie, I.J.H. (Jaco); Allison, J.S.; Santana, L.; Smit, N. (Springer, 2017-05)

  The exponential distribution is a popular model both in practice and in theoretical work. As a result, a multitude of tests based on varied characterisations have been developed for testing the hypothesis that observed ...
• Predicting a dissociative disorder from type of childhood maltreatment and abuser-abused relational tie 

  Kruger, Christa; Fletcher, Lizelle (Routledge, 2017-02)

  We investigate the types of childhood maltreatment and abu-ser–abused relational ties that best predict a dissociative disorder (DD). Psychiatric inpatients (n = 116; mean age = 35; F: M = 1.28:1) completed measures of ...
• Accelerated testing with application in finance 

  Oppel, Anel (University of Pretoria, 2017)

  The event of a default for low-default portfolios, such as sovereign debt or banks, have received much attention as a result of the increasing instabilities in financial markets. The lack of sufficient default information ...
• Dependence structures in multidimensional arrays 

  Lau, Kwok-Ho (University of Pretoria, 2017)

  In the process of data acquisition the information obtained are more than often contaminated by noise. To purify the data smoothers are designed to remove the noise. The LULU operators are such smoothers, more speci cally, ...
• The analysis of a grouped response variable using maximum likelihood estimation under constraints 

  Hendriks, Johannes Jurgens (University of Pretoria, 2017)

  No abstract
• Reliability of the functional auditory performance indicators to monitor progress in 5-year-old children with autism spectrum disorder 

  Muller, Carien; Kritzinger, Alta M. (Aletta Margaretha); Pottas, Lidia; Bodenstein, Lovina (University of Johannesburg, 2016-12-03)

  There is a need to dynamically monitor progress of functional auditory performance in young children with autism spectrum disorder (ASD). The Functional Auditory Performance Indicators (FAPI) is a monitoring tool for ...
• The FitTrack Index as fitness indicator : a pilot study 

  Janse van Rensburg, Dina Christina; Grant, C.C. (Catharina Cornelia); Audrey; Janse van Rensburg; Botha, Roelf Petrus Gerhardus; Wood, Paola Silvia; Nolte, Kim; Fletcher, Lizelle; Du Toit, Peet J.; Pepper, Michael Sean; Kruger, P.E. (Pieter Ernst) (Elsevier, 2016-12)

  BACKGROUND : The FitTrack Index is a web-based programme developed in South Africa and widely used by athletes to indicate their fitness. A need exists for a self-managed, noninvasive tool to evaluate and categorise ...
• The use of cyproterone acetate in a forensic psychiatric cohort of male sex offenders and its associations with sexual activity and sexual functioning 

  Lippi, Gian; Van Staden, Paul Jacobus (Health and Medical Publishing Group, 2017-03-10)

  BACKGROUND : Cyproterone acetate (CPA) is a steroidal anti-androgenic medication used in the field of psychiatry for the treatment of paraphilic disorders, hypersexuality, and inappropriate sexual behaviour which may be ...
• A generally weighted moving average signed-rank control chart 

  Chakraborty, N.; Chakraborti, Subhabrata; Human, Schalk William; Balakrishnan, N. (Wiley, 2016-12)

  The idea of process monitoring emerged so as to preserve and improve the quality of a manufacturing process. In this regard, control charts are widely accepted tools in the manufacturing sector for monitoring the quality ...
• Consumers' subjective and objective consumerism knowledge and subsequent complaint behaviour concerning consumer electronics : a South African perspective 

  Donoghue, Sune; Van Oordt, Chanelle; Strydom, Nina (Wiley, 2016-07)

  Although there is immense international support for consumer protection, the notion exists that consumer protection can only exist in developed countries with ample fiscal resources and expertise to properly act in the ...
• Increased risk of suicide in schizophrenia patients with linkage to chromosome 13q 

  Malherbe, P.J.; Ehlers, Rene; Roos, J.L. (Johannes Louw); Karayiorgou, M. (Elsevier, 2017-05)

  We link schizophrenia in families from the genetically isolated South African Afrikaner population to chromosome 13q (n =51), 1p (n =23) and combined 13q & 1p (n =18). Patients with linkages to chromosome 13q were 4.16 ...
• Wishart distributions : advances in theory with Bayesian application 

  Bekker, Andriette, 1958-; Van Niekerk, Janet; Arashi, Mohammad (Elsevier, 2017-03)

  In this paper, we generalize the Wishart distribution utilizing a fresh approach that leads to the hypergeometric Wishart generator distribution with the Wishart generator and the Wishart as special cases. Important ...
• UPLC-MS metabonomics reveals perturbed metabolites in HIV-infected sera 

  Williams, Aurelia Alvina; Kgoadi, Khanyisile; Steffens, Francois; Meyer, Debra; Steenkamp, Paul (Bentham Science, 2014)

  Immune responses to infection by the human immunodeficiency virus (HIV) and the use of highly active antiretroviral therapy (HAART) to treat HIV infection, contributes to metabolic irregularities in the host. Current ...

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