Research Articles (Statistics): Recent submissions

Now showing items 261-280 of 485

A laboratory approach for characterizing chronic fatigue : what does metabolomics tell us?

Erasmus, Elardus; Mason, Shayne; Van Reenen, Mari; Steffens, Francois E.; Vorster, B. Chris; Reinecke, Carolus J. (Springer, 2019-11)

INTRODUCTION : Manifestations of fatigue range from chronic fatigue up to a severe syndrome and myalgic encephalomyelitis. Fatigue grossly affects the functional status and quality of life of affected individuals, prompting ...
Reliability and validity of the neonatal feeding assessment scale (NFAS) for the early identification of dysphagia in moderate to late preterm neonates

Viviers, Mari; Kritzinger, Alta M. (Aletta Margaretha); Graham, Marien Alet (Makerere University Medical School, 2019-09)

BACKGROUND : A clinical feeding assessment instrument to assist with early identification of oropharyngeal dysphagia (OPD) in neonates was developed. OBJECTIVE : To investigate the validity and reliability of the Neonatal ...
Series representations for densities functions of a family of distributions—application to sums of independent random variables

Marques, Filipe J.; Loots, Mattheus Theodor; Bekker, Andriette, 1958- (Wiley, 2019-11)

Series representations for several density functions are obtained as mixtures of generalized gamma distributions with discrete mass probability weights, by using the exponential expansion and the binomial theorem. Based ...
Normal mean-variance Lindley Birnbaum-Saunders distribution

Hashemi, Farzane; Naderi, Mehrdad; Jamalizadeh, Ahad (International Press, 2019)

The generalization of Birnbaum-Saunders (BS) distribution has recently received considerable attention to provide accurate inferential results in dealing with survival data, reliability problems, fatigue life studies and ...
Modifying copulas for improved dependence modelling

Le Roux, Colette; De Waal, Alta (CEUR Workshop Proceedings, 2019)

In 2007 and 2008, underestimation of correlations and risks, as well as the misuse of dependence models, lead to the financial crisis. This highlighted the need to improve dependence modelling through both the correlation ...
A two-stage contagious Naive Bayes classifier for detecting sociolinguistic features in text

Derks, Iena Petronella; De Waal, Alta (CEUR Workshop Proceedings, 2019)

Online platforms allow users to masquerade themselves; making virtual interactions anonymous or misleading recipients of the interactions. It also facilitates an environment for cybercrimes, allowing users to take advantage ...
Effective graph sampling of a nonlinear image transform

De Lancey, Mark; Fabris-Rotelli, Inger Nicolette (CEUR Workshop Proceedings, 2019)

The Discrete Pulse Transform (DPT) makes use of LULU smoothing to decompose a signal into block pulses. The most recent and effective implementation of the DPT is an algorithm called the Roadmaker's Pavage, which uses ...
How to manage travel fatigue and jet lag in athletes? A systematic review of interventions

Janse van Rensburg, Dina Christina; Jansen van Rensburg, Audrey; Fowler, Peter; Fullagar, Hugh; Stevens, David James; Halson, Shona; Bender, Amy; Vincent, Grace; Claassen-Smithers, Amanda; Dunican, Ian; Roach, Gregory Daniel; Sargent, Charli; Lastella, Michelle; Cronje, Tanita (BMJ Publishing Group, 2020-08)

OBJECTIVES : We investigated the management of travel fatigue and jet lag in athlete populations by evaluating studies that have applied non-pharmacological interventions (exercise, sleep, light and nutrition), and ...
Family history identifies sporadic schizoaffective disorder as a subtype for genetic studies

Van der Merwe, Nicolaas J.; Karayiorgou, Maria; Ehlers, Rene; Roos, J.L. (Johannes Louw) (AOSIS Open Journals, 2020-04)

BACKGROUND : Schizophrenia is a heterogeneous disorder with strong genetic vulnerability. Family history of schizophrenia has been considered in genetic studies under several models. De novo genetic events seem to play a ...
Small-area variation of cardiovascular diseases and select risk factors and their association to household and area poverty in South Africa : capturing emerging trends in South Africa to better target local level interventions

Dwane, Ntabozuko; Wabiri, Njeri; Manda, S.O.M. (Samuel) (Public Library of Science, 2020-04)

BACKGROUND : Of the total 56 million deaths worldwide during 2012, 38 million (68%) were due to noncommunicable diseases (NCDs), particularly cardiovascular diseases (17.5 million deaths) cancers (8.2 million) which ...
Discerning undifferentiated anxiety from syndromal anxiety in acute-phase schizophrenia

Naidu, Kalai; Van Staden, C.W. (Werdie); Fletcher, Lizelle (BioMed Central, 2020-04)

BACKGROUND : Literature on anxiety in schizophrenia is confined to well-established diagnostic syndromes and the diagnostic category of unspecified anxiety disorder has not been quantitatively verified in this population. ...
Price dynamics of red meat types in South Africa for the period 2013 to 2017

Janse van Rensburg, Estrelita; Casey, Norman Henry; Jordaan, J.C. (Joyce); Webb, E.C. (Edward Cottington) (Elsevier, 2020-06)

The agricultural product market is changing from a producer-orientated to a more consumer-orientated market. Consumer rely on the classification system within the red meat types. Different red meat types and carcass ...
Tongue position and its relation to the cause of death and sequential stages of body decomposition observed during 608 forensic post-mortems

Bernitz, Herman; Van Staden, Paul Jacobus; Rossouw, Servaas Hofmeyr; Jordaan, J.C. (Joyce) (Springer, 2019-07)

The purpose of this study was to document tongue position and its relation to the cause of death and sequential stages of body decomposition, as observed during the routine forensic pathological examination of bodies. The ...
Bedaquiline, moxifloxacin, pretomanid, and pyrazinamide during the first 8 weeks of treatment of patients with drug-susceptible or drug-resistant pulmonary tuberculosis : a multicentre, open-label, partially randomised, phase 2b trial

Tweed, Connor D.; Dawson, Rodney; Burger, Divan Aristo; Conradie, Almari; Crook, Angela M.; Mendel, Carl M.; Conradie, Francesca; Diacon, Andreas H.; Ntinginya, Nyanda E.; Everitt, Daniel E.; Haraka, Frederick; Li, Mengchum; Van Niekerk, Christo H.; Okwera, Alphonse; Rassool, Mohammed S.; Reither, Klaus; Sebe, Modulakgotla A.; Staples, Suzanne; Variava, Ebrahim; Spigelman, Melvin (Elsevier, 2019-12)

Please read abstract in the article.
Learning music theory en passant : a study in an internationally recognised South African university student choir

Barrett-Berg, Michael; Page-Shipp, Roy; Van Niekerk, Caroline; Ferreira, Johannes Theodorus (Cambridge University Press, 2020-07)

While mastery of aspects of music theory is relevant to rapid learning and understanding of a new choral part, many choirs comprise members with no formal education in music theory. Also, the language of music theory is ...
Review of existing knowledge on soil crusting in South Africa

Laker, Michiel Christiaan; Nortje, Gerhardus Petrus (Elsevier, 2019)

Soil crusting (surface sealing) is a widespread and serious problem throughout all nine provinces of South Africa and in neighboring countries, like Botswana, Namibia, Swaziland and Zimbabwe. It is a problem in extensive ...
Dynamic oral texture properties of selected indigenous complementary porridges used in African communities

Makame, James; Cronje, Tanita; Emmambux, Mohammad Naushad; De Kock, Henrietta Letitia (MDPI Publishing, 2019-06-21)

Child malnutrition remains a major public health problem in low-income African communities, caused by factors including the low nutritional value of indigenous/local complementary porridges (CP) fed to infants and young ...
Asymmetric generalizations of symmetric univariate probability distributions obtained through quantile splicing

Mac’Oduol, B.V. (Brenda); Van Staden, Paul Jacobus; King, Robert A.R. (Taylor and Francis, 2020)

Balakrishnan et al. proposed a two-piece skew logistic distribution by making use of the cumulative distribution function (CDF) of half distributions as the building block, to give rise to an asymmetric family of two-piece ...
A unified complex noncentral Wishart type distribution inspired by massive MIMO systems

Ferreira, Johannes Theodorus; Bekker, Andriette, 1958- (SpringerOpen, 2019-12)

Please read abstract in the article.
A generalized Bayesian nonlinear mixed‐effects regression model for zero‐inflated longitudinal count data in tuberculosis trials

Burger, Divan Aristo; Schall, Robert; Jacobs, Rianne; Chen, Ding-Geng (Din) (Wiley, 2019-07)

In this paper, we investigate Bayesian generalized nonlinear mixed‐effects (NLME) regression models for zero‐inflated longitudinal count data. The methodology is motivated by and applied to colony forming unit (CFU) counts ...

Now showing items 261-280 of 485

Search UPSpace

Browse

All of UPSpace
This Collection
- Issue Date
- Authors
- Titles
- Subjects
- Supervisor
- UP Author
- UP Postgraduate
- Type

Recently added

Research Articles (Statistics): Recent submissions

Search UPSpace

Browse

All of UPSpace

This Collection

My Account

UPSpace Workspace