• Preface for the special Issue on computational techniques in theoretical and applied statistics 

  Marques, Filipe J.; Bekker, Andriette, 1958-; Arashi, Mohammad (International Academic Press, 2018-09)

  Recent technological developments and the exponential increase in computational power provide researchers in statistics with endless possibilities for developing methodologies and applying new techniques. This special ...
• On parameter estimation in multi-parameter distributions 

  Visagie, I.J.H. (Jaco) (International Academic Press, 2018-09)

  Many-multi parameter distributions have limit cases containing fewer parameters. This paper demonstrates that, when fitting distributions to data realized from a distribution resembling one of these limit cases, the ...
• Testing for normality in any dimension based on a partial differential equation involving the moment generating function 

  Henze, Norbert; Visagie, I.J.H. (Jaco) (Springer, 2019-05)

  We use a system of first-order partial differential equations that characterize the moment generating function of the d-variate standard normal distribution to construct a class of affine invariant tests for normality in ...
• A cross-sectional study of 2550 amateur cyclists shows lack of knowledge regarding relevant sports nutrition guidelines 

  Sparks, I.M.; Janse van Rensburg, Dina Christina; Fletcher, Lizelle; Jansen van Rensburg, Audrey (Health and Medical Publishing Group, 2018)

  BACKGROUND : Amateur cyclists use a wide variety of supplements and nutritional substances to increase performance in addition to their training. OBJECTIVES : The intended nutritional supplement use, carbohydrate (CHO) ...
• Microporous polyolefin strands as controlled-release devices for mosquito repellents 

  Mapossa, Antonio B.; Sibanda, Mthokozisi Mayibongwe; Sitoe, Alcides; Focke, Walter Wilhelm; Braack, L.E.O.; Ndonyane, Cyril; Mouatcho, Joel Claude; Smart, Jansie; Muaimbo, Herminio; Androsch, Rene; Loots, Mattheus T. (Elsevier, 2019-03)

  The main vectors of malaria in Africa, i.e. An. arabiensis, An. gambiae s.s. and An. funestus, are attracted by human foot odour and they tend to bite victims in the ankle area. Hence, affordable mosquito-repellent ...
• Adaptation and validation of a self‐report measure of youth‐friendly primary healthcare services 

  Boersema, G.C. (Christelle); Van Wyk, Neltjie C.; Louw, Elizabeth M. (Wiley, 2019-06)

  AIM : To adapt the Youth‐Friendly Health Services‐World Health Organization+ questionnaire to suit the health needs of youth in the South African context, and estimate its psychometric properties. BACKGROUND : Youth‐friendly ...
• Quantifying rehabilitation risks for surface-strip coal mines using a soil compaction Bayesian network in South Africa and Australia : to demonstrate the R(2)AIN Framework 

  Weyer, Vanessa D.; De Waal, Alta; Lechner, Alex M.; Unger, Corinne J.; O'Connor, Tim G.; Baumgartl, Thomas; Schulze, Roland; Truter, Wayne Frederick (Wiley, 2019-03)

  Environmental information is acquired and assessed during the environmental impact assessment process for surface‐strip coal mine approval. However, integrating these data and quantifying rehabilitation risk using a holistic ...
• Introduction to the special issue “Uncertainty in remote sensing image analysis” 

  Stein, Alfred; Ge, Yong; Fabris-Rotelli, Inger Nicolette (MDPI Publishing, 2018)

  Images obtained from satellites are of an increasing resolution. In addition, the frequency of their observations is increasing, and is expected to continue to increase in the near future. Despite these rapid developments, ...
• Catastrophic musculoskeletal injuries in thoroughbred racehorses on racetracks in Gauteng- South Africa 

  Spargo, Keith E.; Rubio-Martinez, Luis M.; Wheeler, Dale P.; Fletcher, Lizelle; Carstens, Ann (AOSIS OpenJournals, 2019-02-28)

  The incidence and types of catastrophic musculoskeletal injuries in Thoroughbreds that resulted in euthanasia on selected racetracks in South Africa between 1998 and 2012 were investigated by an observational retrospective ...
• Towards developing a metabolic-marker based predictive model for Phytophthora nicotianae tolerance in citrus rootstocks 

  Sakupwanya, Masiyiwa Ngoni; Labuschagne, Nico; Loots, Mattheus Theodor; Apostolides, Zeno (Springer, 2018-07)

  Root rot of citrus trees caused by Phytophthora nicotianae is responsible for severe economic losses in citriculture. Use of resistant rootstocks is an effective method of managing this problem, however, breeding and ...
• Assessment of the value of group-based counselling for career construction 

  Maree, J.G. (Kobus); Cook, Antoinette V.; Fletcher, Lizelle (Routledge, 2018)

  This article reports on the change in the career adaptability of participants exposed to an intervention programme characterized by career and selfconstruction principles compared to the change in participants who participated ...
• Medical marijuana laws and marijuana use among U.S. adolescents : evidence from Michigan youth risk behavior surveillance data 

  Chen, Xinguang; Yu, Bin; Stanton, Bonita; Cook, Robert L.; Chen, Ding-Geng (Din); Okafor, Chukwuemeka (Sage, 2018-03)

  Research findings are inconsistent regarding a positive association between the passage of state medical marijuana laws (MML) and the adolescent access and the use of marijuana. We utilized a novel analytical approach to ...
• Bivariate gamma type distributions for modeling wireless performance metrics 

  Andriette, 1958-; Ferreira, J.T. (Johannes) (International Academic Press, 2018-09)

  In this paper a bivariate gamma type distribution, its noncentral counterpart, and a linked bivariate Weibullised gamma type distribution, following an elliptical assumption, are proposed and studied. The adaptability of ...
• A Bayesian perspective on intervention research : using prior information in the development of social and health programs 

  Chen, Ding-Geng (Din); Fraser, Mark W. (University of Chicago Press, 2017)

  OBJECTIVE : By presenting a simulation study that compares Bayesian and classical frequentist approaches to research design, this paper describes and demonstrates a Bayesian perspective on intervention research. METHOD ...
• A Bayesian approach to sample size estimation and the decision to continue program development in intervention research 

  Chen, Ding-Geng (Din); Fraser, Mark W. (University of Chicago Press, 2017)

  OBJECTIVE : In intervention research, the decision to continue developing a new program or treatment is dependent on both the change-inducing potential of a new strategy (i.e., its effect size) and the methods used to ...
• On the interchangeability of barrier option pricing models 

  Visagie, I.J.H. (Jaco) (South African Statistical Association, 2018)

  An important question when modelling option prices is which of the multitude of option pricing models to use. In this paper, the calculation of barrier option prices is considered. These exotic options are found in many ...
• Beta regression in the presence of outliers – a wieldy Bayesian solution 

  Van Niekerk, Janet; Bekker, Andriette, 1958-; Arashi, Mohammad (Sage, 2019)

  Real phenomena often leads to challenges in data. One of these is outliers or influential values. Especially in a small sample, these values can have a major influence on the modeling process. In the beta regression ...
• Anterior cruciate ligament injuries of the knee : patterns of association between the mechanism of injury and pathology visualised on magnetic resonance imaging 

  Strauss, G.L.; Janse van Rensburg, Dina Christina; Grant, C.C. (Catharina Cornelia); Jansen van Rensburg, Audrey; Velleman, Mark D.; Fletcher, Lizelle (Health and Medical Publishing Group, 2018)

  BACKGROUND : Anterior cruciate ligament (ACL) injuries are common among athletes and the general public. These injuries may lead to significant absence from all activities with associated financial and social burdens for ...
• Computational methods applied to a skewed generalized normal family 

  Bekker, Andriette, 1958-; Ferreira, J.T. (Johannes); Arashi, M.; Rowland, B.W. (Taylor and Francis, 2018)

  Some characteristics of the normal distribution may not be ideal to model in many applications. We develop a skew generalized normal (SGN) distribution by applying a skewing method to a generalized normal distribution, and ...
• Untangle the structural and random zeros in statistical modelings 

  Tang, W.; He, H.; Wang, W.J.; Chen, Ding-Geng (Din) (Taylor and Francis, 2018)

  Count data with structural zeros are common in public health applications. There are considerable researches focusing on zero-inflated models such as zero-inflated Poisson (ZIP) and zero-inflated Negative Binomial (ZINB) ...

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