Recent accredited publications of the department are listed here, updated annually.

For 2019 and newer we give the paper title, journal title, and the author(s) from the department who made the largest contribution to the paper (with their contribution in brackets).

2022
  • A descriptive model for predictors of stroke in South Africa using the least absolute shrinkage and selection operator (LASSO) logistic regression. International Journal On Disability And Human Development. Delson Chikobvu (0.5)
  • A Different Way of Choosing a Threshold in a Bivariate Extreme Value Study. Statistics, Optimization And Information Computing. Andréhette Verster (0.5)
  • A homogeneously weighted moving average control chart for Conway–Maxwell Poisson distribution. Journal Of Applied Statistics. Sandile Shongwe (0.25)
  • A Markov Chain Approach to the Pattern of Blood Donation Status at a Blood Service Centre in Zimbabwe. Open Public Health Journal. Delson Chikobvu (0.5) Coster Chideme (0.5)
  • A Markov jump process approach to modeling blood donor status: Donor retention and attrition rates at a blood service center in Zimbabwe. Health Science Reports. Delson Chikobvu (0.5) Coster Chideme (0.5)
  • A new warranty policy for heterogeneous items subject to monotone degradation processes. Proceedings Of The Institution Of Mechanical Engineers Part O-Journal Of Risk And Reliability. Maksim Finkelshtein (0.5)
  • A novel single composite Shewhart-EWMA control chart for monitoring the process mean. Quality And Reliability Engineering International. Sandile Shongwe (0.25)
  • A preliminary study on the siphon mechanism in Giraffe (Giraffa camelopardalis). Animals. Sean van der Merwe (0.2)
  • A Preventive Replacement Policy for a System Subject to Bivariate Generalized Polya Failure Process. Mathematics. Maksim Finkelshtein (0.3333)
  • A simulation study to compare reference and other priors in the case of a standard univariate Student-t distribution. South African Statistical Journal. Abrie Van der Merwe (0.25) Michael von Maltitz (0.25) Pieter Groenewald (0.25)
  • Acceptance reliability sampling plan for items with two failure modes. Statistics. Maksim Finkelshtein (0.5)
  • Age-replacement policy for items described by stochastic degradation with dependent increment. Ima Journal Of Management Mathematics. Maksim Finkelshtein (0.3333)
  • Analysis of modifiable and non-modifiable predictors of stroke in South Africa using Bayesian quantile regression model. International Journal On Disability And Human Development. Delson Chikobvu (0.5)
  • Balancing load and performance for different failure models. Applied Stochastic Models In Business And Industry. Maksim Finkelshtein (0.3333) Niladri Chakraborty (0.3333)
  • Bias Reduced Peaks over Threshold Tail Estimation. Revstat Statistical Journal. Andréhette Verster (0.25) Jan Beirlant (0.25)
  • Combined hierarchical tourist arrival forecasts for great Zimbabwe national monuments. African Journal Of Hospitality, Tourism And Leisure. Delson Chikobvu (0.3333) Tendai Makoni (0.3333)
  • Comparing riskiness of exchange rate volatility using the value at risk and expected shortfall methods. Investment Management & Financial Innovations. Delson Chikobvu (0.5) Thabani Ndlovu (0.5)
  • Development of an early career academic supervisor in Statistics - A discussion towards a guiding rubric. Orion. Michael von Maltitz (0.125)
  • Estimating rubber covered conveyor belting cure times using multiple simultaneous optimisations ensemble. Operational Research In Engineering Sciences: Theory And Applications. Delson Chikobvu (0.5) Domongo Pavolo (0.5)
  • Estimating the dependence parameter in bivariate extreme value statistics through a Bayesian approach. Orion. Andréhette Verster (0.5)
  • Evaluating the neutrophil-to-lymphocyte ratio as an indicator for early referral of patients with COVID-19 pneumonia to a high-care facility. Samj South African Medical Journal. Sean van der Merwe (0.3333)
  • Extreme value modelling of the monthly South African industrial index (J520) returns. Statistics, Optimization And Information Computing. Delson Chikobvu (0.5) Owen Jakata (0.5)
  • Extreme value modelling of the South African Industrial Index (J520) returns using the generalised extreme value distribution. International Journal Of Applied Management Science. Delson Chikobvu (0.5) Owen Jakata (0.5)
  • Jackknifing then model averaging: investigating the improvements to fitness to data and prediction accuracy of two-input under-fitted and just-fitted response models. International Journal Of Operational Research. Delson Chikobvu (0.5) Domongo Pavolo (0.5)
  • Modelling tourist arrivals in South Africa to assess the impact of the COVID-19 pandemic on the tourism sector. African Journal Of Hospitality, Tourism And Leisure. Delson Chikobvu (0.5) Musara Chipumuro (0.5)
  • Monitoring non-parametric profiles using adaptive EWMA control chart. Scientific Reports. Sandile Shongwe (0.3333)
  • Monitoring univariate and multivariate profiles using the triple exponentially weighted moving average scheme with fixed and random explanatory variables. Computers & Industrial Engineering. Sandile Shongwe (0.25)
  • New extended distribution-free homogenously weighted monitoring schemes for monitoring abrupt shifts in the location parameter. Plos One. Sandile Shongwe (0.3333)
  • On a bivariate copula for modeling negative dependence: application to New York air quality data. Statistical Methods And Applications. Maksim Finkelshtein (0.3333)
  • On a hazard (failure) rate process with delays after shocks. Statistics And Probability Letters. Maksim Finkelshtein (0.3333)
  • On degradation-based remaining lifetime. Probability In The Engineering And Informational Sciences. Maksim Finkelshtein (0.5)
  • On history-dependent mixed shock models. Probability In The Engineering And Informational Sciences. Maksim Finkelshtein (0.3333)
  • On Properties of the Phase-type Mixed Poisson Process and its Applications to Reliability Shock Modeling. Methodology And Computing In Applied Probability. Maksim Finkelshtein (0.3333)
  • On some general survival models with delayed failures. Communications In Statistics-Theory And Methods. Maksim Finkelshtein (0.5)
  • On the general δ-shock model. Test. Maksim Finkelshtein (0.3333)
  • On the improved generalized linear model-based monitoring methods for Poisson distributed processes. Concurrency Computation Practice And Experience. Niladri Chakraborty (0.25)
  • On the Time-Dependent Delta-Shock Model Governed by the Generalized PoLya Process. Methodology And Computing In Applied Probability. Maksim Finkelshtein (0.3333)
  • Optimal Preventive Replacement for Cold Standby Systems With Elements Exposed to Shocks During Operation and Task Transfers. Ieee Transactions On Systems, Man, And Cybernetics: Systems. Maksim Finkelshtein (0.3333)
  • Optimal preventive switching of components in degrading systems. Reliability Engineering And System Safety. Maksim Finkelshtein (0.3333)
  • Reducing degradation and age of items in imperfect repair modeling. Test. Maksim Finkelshtein (0.5)
  • Replacement Policy for Heterogeneous Items Subject to Gamma Degradation Processes. Methodology And Computing In Applied Probability. Maksim Finkelshtein (0.3333)
  • Stochastic properties of generalized finite ??-mixtures. Probability In The Engineering And Informational Sciences. Maksim Finkelshtein (0.3333)
  • Student Housing Satisfaction at a South African University. Journal Of Student Affairs Research And Practice. Michael von Maltitz (0.0909) Wilben Pretorius (0.0909)
  • Suitability of the 2.5% net discount rate for quantum of damage calculations in South Africa. South African Actuarial Journal. Frans Koning (0.25)
  • The value of brain-computer interface measurements when using ambiguous search queries. Lecture Notes In Networks And Systems. Robert Schall (0.3333)
  • "Using criterion-based model averaging in two-input multiple response surface methodology problems. International Journal Of Operational Research. Delson Chikobvu (0.5) Domongo Pavolo (0.5)"
2021
  • A Bayesian-Frequentists approach for detecting outliers in a one-way variance components model. Communications In Statistics-Theory And Methods. Abraham Van der Merwe (0.25) Morne Sjolander (0.25) Piet Groenewald (0.25)
  • A homogenously weighted moving average scheme for observations under the effect of serial dependence and measurement inaccuracy. International Journal Of Industrial Engineering Computations. Sandile Shongwe (0.2)
  • A hybrid homogeneously weighted moving average control chart for process monitoring: Discussion. Quality And Reliability Engineering International. Sandile Shongwe (0.33)
  • A novel simulation-based adaptive MEWMA approach for monitoring linear and logistic profiles. Ieee Access. Sandile Shongwe (0.33)
  • A robust method for the assessment of average bioequivalence in the presence of outliers and skewness. Pharmaceutical Research. Robert Schall (0.33) Sean Van der Merwe (0.33)
  • Analysing and quantifying the effect of predictors of stroke direct costs in South Africa using quantile regression. Bmc Public Health. Delson Chikobvu (0.5)
  • Anthropogenic influences on distance traveled and vigilance behavior and stress-related endocrine correlates in free-roaming giraffes. Animals. Sean Van der Merwe (0.25)
  • Association of attention deficit and hyperactivity disorder symptoms with visual functioning difficulties in Grade 1 learners. Sajch South African Journal Of Child Health. Robert Schall (0.25)
  • Distribution-free double-sampling precedence monitoring scheme to detect unknown shifts in the location parameter. Quality And Reliability Engineering International. Sandile Shongwe (0.2)
  • Estimation of population median under robust measures of an auxiliary variable. Mathematical Problems In Engineering. Sandile Shongwe (0.2)
  • Failure rate monitoring in generalized gamma-distributed process. Quality Technology And Quantitative Management. Niladri Chakraborty (0.5)
  • Fitting nonstationary cox processes: An application to fire insurance data. North American Actuarial Journal. Jan Beirlant (0.33)
  • Generalization of the pairwise stochastic precedence order to the sequence of random variables? Probability In The Engineering And Informational Sciences. Maksim Finkelshtein (0.5)
  • Gluteal muscle activation during rehabilitation exercises in female field hockey players. South African Journal Of Physiotherapy. Robert Schall (0.25)
  • Hierarchical forecasting of the Zimbabwe International Tourist Arrivals. Statistics, Optimization And Information Computing. Delson Chikobvu (0.33) Tendai Makoni (0.33)
  • Modelling international tourist arrivals volatility in Zimbabwe using a GARCH process. African Journal Of Hospitality, Tourism And Leisure. Delson Chikobvu (0.5) Tendai Makoni (0.5)
  • Modelling non-modifiable risk factors of stroke in South Africa: Classical and Bayesian logistic regression approaches. International Journal On Disability And Human Development. Delson Chikobvu (0.5)
  • Morphological and skill-related fitness components as potential predictors of injury in elite netball players: A cohort study. South African Journal Of Physiotherapy. Robert Schall (0.33)
  • On degradation-based imperfect repair and induced generalized renewal processes. Test. Maksim Finkelshtein (0.5)
  • On dynamic information-based life extension. Proceedings Of The Institution Of Mechanical Engineers Part O-Journal Of Risk And Reliability. Maksim Finkelshtein (0.33) Shyamal Ghosh (0.33)
  • On optimal maintenance of degrading multistate systems with state-dependent cost of repair. Applied Stochastic Models In Business And Industry. Maksim Finkelshtein (0.5)
  • On some properties of α-mixtures. Metrika. Maksim Finkelshtein (0.33)
  • On the new operational characteristic for degrading systems executing missions of fixed duration. Applied Stochastic Models In Business And Industry. Maksim Finkelshtein (0.5)
  • Optimal abort rules for additive multi-attempt missions. Reliability Engineering & System Safety. Maksim Finkelshtein (0.33)
  • Optimal aborting strategy for three-phase missions performed by multiple units. Reliability Engineering & System Safety. Maksim Finkelshtein (0.33)
  • Optimal inspection for missions with a possibility of abortion or switching to a lighter regime. Top. Maksim Finkelshtein (0.33) Shyamal Ghosh (0.33)
  • Optimal warranty policy with inspection for heterogeneous, stochastically degrading items. European Journal Of Operational Research. Maksim Finkelshtein (0.33)
  • Quantile regression analysis of modifiable and non-modifiable predictors of stroke among adults in South Africa. Open Public Health Journal. Delson Chikobvu (0.5)
  • Quantile regression analysis of non-modifiable predictors of stroke in South Africa. International Journal On Disability And Human Development. Delson Chikobvu (0.5)
  • Randomised controlled cross-over trial measuring brain-computer interface metrics to characterise the user experience of search engines when ambiguous search queries are used. Communications In Computer And Information Science. Robert Schall (0.33)
  • Relationship between hikers' self-reported physical activity responses and ratings of perceived exertion. African Journal For Physical Activity And Health Sciences (Ajphes). Formelry African Journal For Physical, Health Education, Recreation And Dance (Ajpherd). Robert Schall (0.25)
  • Robust distribution-free hybrid exponentially weighted moving average schemes based on simple random sampling and ranked set sampling techniques. Mathematical Problems In Engineering. Sandile Shongwe (0.25)
  • Soil fertilization synergistically enhances the impact of pollination services in increasing seed yield of sunflower under dryland conditions. Journal Of Agricultural Science. Sean Van der Merwe (0.25)
  • The relationship between core stability and athletic performance in female university athletes. South African Journal Of Sports Medicine. Robert Schall (0.33)
  • Virtual age, is it real? - Discussing virtual age in reliability context. Applied Stochastic Models In Business And Industry. Maksim Finkelshtein (0.5)
  • Rejoinder to “Virtual age, is it real?”. Applied Stochastic Models In Business And Industry. Maksim Finkelshtein (0.5)
2020
  • Confidence intervals for extreme Pareto-type quantiles. SCANDINAVIAN JOURNAL OF STATISTICS. Jan Beirlant (0.33)
  • A Markov model for the effects of virological failure on HIV/AIDS progression in tuberculosis co-infected patients receiving antiretroviral therapy in a rural clinic in northern South Africa. SAMJ SOUTH AFRICAN MEDICAL JOURNAL. Delson Chikobvu (0.33)
  • Determining Cure Time of Rubber-Covered Mining Conveyor Belts using Multiresponse Surface Methodology. International Journal of Operations and Quantitative Management. Delson Chikobvu (0.5)
  • Probabilistic Flood Height Estimation of the Limpopo River at the Beitbridge using r-Largest Order Statistics. Applied Mathematics and Information Sciences. Delson Chikobvu (0.17)
  • Effects of antiretroviral therapy on CD4+ cell count, HIV viral load and death in a South African cohort: A modelling study. Pakistan Journal of Biological Sciences. Delson Chikobvu (0.33)
  • Analysing extreme risk in the South African financial index (J580) using the generalised extreme value distribution. Statistics, Optimization and Information Computing. Delson Chikobvu (0.5)
  • Balancing mission success probability and risk of system loss by allocating redundancy in systems operating with a rescue option. Reliability Engineering & System Safety. Maxim Finkelstein (0.33)
  • Is perfect repair always perfect?. TEST. Maxim Finkelstein (0.5)
  • Mission abort policy optimization for series systems with overlapping primary and rescue subsystems operating in a random environment. Reliability Engineering & System Safety. Maxim Finkelstein (0.33)
  • On a new age-replacement policy for items with observed stochastic degradation. Quality and Reliability Engineering International. Maxim Finkelstein (0.33)
  • Optimal aborting rule in multi-attempt missions performed by multicomponent systems. European Journal of Operational Research. Maxim Finkelstein (0.33)
  • On optimal life extension for degrading systems. Proceedings of the Institution of Mechanical Engineers Part O-Journal of Risk and Reliability. Maxim Finkelstein (0.5)
  • Stochastic modelling of operational quality of k-out-of-n systems. Top. Maxim Finkelstein (0.5)
  • A hybrid preventive maintenance model for systems with partially observable degradation. IMA Journal Management Mathematics. Maxim Finkelstein (0.33)
  • Optimal preventive replacement policy for homogeneous cold standby systems with reusable elements. RELIABILITY ENGINEERING & SYSTEM SAFETY. Maxim Finkelstein (0.33)
  • Optimal mission abort policies for multistate systems. RELIABILITY ENGINEERING & SYSTEM SAFETY. Maxim Finkelstein (0.33)
  • On missions’ quality of performance for systems with partially or completely observable degradation. Proceedings of the Institution of Mechanical Engineers, Part O: Journal of Risk and Reliability. Maxim Finkelstein (0.5)
  • Optimal multi-attempt missions with cumulative effect. RELIABILITY ENGINEERING & SYSTEM SAFETY. Maxim Finkelstein (0.33)
  • On some stochastic properties of lives lived and left in non-stationary populations. JOURNAL OF MATHEMATICAL BIOLOGY. Maxim Finkelstein (0.5)
  • Analysing extreme risk in the South African financial index (J580) using the generalised extreme value distribution. Statistics, Optimization and Information Computing. Owen Jakata (0.5)
  • Prediction error estimation of the survey-weighted least squares model under complex sampling. South African Statistical Journal. Ariane Neethling (0.33)
  • Determining Cure Time of Rubber-Covered Mining Conveyor Belts using Multiresponse Surface Methodology. International Journal of Operations and Quantitative Management. Domongo Pavolo (0.5)
  • Assessing consistency in clinical trials with two subgroups and binary endpoints: A new test within the logistic regression model. STATISTICS IN MEDICINE. Arne Ring (0.25)
  • Catholyte as an environmentally friendly detergent:  effect on the colourfastness of black dyed textiles. JOURNAL OF THE TEXTILE INSTITUTE. Robert Schall (0.33)
  • Using intentional humour in a higher education classroom: connecting with, and building on Lovorn and Holaway (2015). European Journal of Humour Research. Robert Schall (0.33)
  • A robust Bayesian mixed effects approach for zero inflated and highly skewed longitudinal count data emanating from the zero inflated discrete Weibull distribution. Statistics in Medicine. Robert Schall (0.25)
  • Selected wetland soil properties correlate to Rift Valley fever livestock mortalities reported in 2009-10 in central South Africa. PLoS One. Robert Schall (0.08)
  • Physical and physiological profile of U18, U19, U21 and senior elite netball players. South African Journal of Sports Medicine. Robert Schall (0.33)
  • Epidemiology of injuries among U18, U19, U21 and senior elite netball players. South African Journal of Sports Medicine. Robert Schall (0.33)
  • Prevalence of ADHD Symptoms and their Association with Learning-Related Skills in Grade 1 Children in South Africa. South African Journal of Education. Robert Schall (0.25)
  • Analysis of power play in 2018 Varsity Cup rugby competition. SOUTH AFRICAN JOURNAL FOR RESEARCH IN SPORT PHYSICAL EDUCATION AND RECREATION. Robert Schall (0.5)
  • Incidence of match injuries of South African junior netball players. SOUTH AFRICAN JOURNAL FOR RESEARCH IN SPORT PHYSICAL EDUCATION AND RECREATION. Robert Schall (0.33)
  • Time-motion analysis of elite under-19 female netball players using GPS. South African Journal for Research in Sport, Physical Education and Recreation. Robert Schall (0.25)
  • A Markov model for the effects of virological failure on HIV/AIDS progression in tuberculosis co-infected patients receiving antiretroviral therapy in a rural clinic in northern South Africa. SAMJ SOUTH AFRICAN MEDICAL JOURNAL. Claris Shoko (0.33)
  • Effects of antiretroviral therapy on CD4+ cell count, HIV viral load and death in a South African cohort: A modelling study. Pakistan Journal of Biological Sciences. Claris Shoko (0.33)
  • An empirical study of the behaviour of the smple kurtosis in samples from symmetric stable distributions. South African Statistical Journal. Sean van der Merwe (0.5) Martin van Zyl (0.5)

2019
  • Ridge regression estimators for the extreme value index. Extremes. Jan Beirlant (0.33)
  • Estimation of the extreme value index in a censorship framework: Asymptotic and finite sample behavior. Journal Of Statistical Planning And Inference. Jan Beirlant (0.33)
  • A comparison of the time homogeneous and time non-homogeneous markov models for monitoring HIV/AIDS disease progression: Results from patients on ART.. Biomedical Research (India). Delson Chikobvu (0.33)
  • A superiority of viral load over CD4 cell count when predicting mortality in HIV patients on therapy. Bmc Infectious Diseases. Delson Chikobvu (0.5)
  • Modelling extreme risk of the South African Financial Index (J580) using the generalised Pareto distribution. Journal of Economic and Financial Sciences. Delson Chikobvu (0.5)
  • Statistical modelling of Zimbabwe's international tourist arrivals using both symmetric and asymmetric volatility models. Journal of Economic and Financial Sciences. Delson Chikobvu (0.5)
  • On some characteristics of quality for systems operating in a random environment . Proceedings Of The Institution Of Mechanical Engineers Part O-Journal Of Risk And Reliability. Maxim Finkelstein (0.5)
  • Analysis and optimal design of systems operating inn a random environment and having a rescue option . International Journal Of General Systems. Maxim Finkelstein (0.33)
  • Stochastic modeling for systems with delayed failures. Reliability Engineering & System Safety. Maxim Finkelstein (0.5)
  • On operation termination for degrading systems with two types of failures. Proceedings Of The Institution Of Mechanical Engineers Part O-Journal Of Risk And Reliability. Maxim Finkelstein (0.33)
  • New failure and minimal repair processes for repairable systems in a random environment. Applied Stochastic Models In Business And Industry. Maxim Finkelstein (0.5)
  • Preventive maintenance for homogeneous and heterogeneous systems. Applied Stochastic Models In Business And Industry. Maxim Finkelstein (0.5)
  • Some results on discrete mixture failure rates. Communications In Statistics-Theory And Methods. Maxim Finkelstein (0.5)
  • Optimal preventive maintenance for systems having a continuous output and operating in a random environment. Top. Maxim Finkelstein (0.5)
  • Comparing lifetimes of coherent systems with dependent components operating in random environments. Journal Of Applied Probability. Maxim Finkelstein (0.5)
  • Optimal loading of elements in series systems exposed to external shocks. Reliability Engineering & System Safety. Maxim Finkelstein (0.5)
  • Stochastic modeling of quality of systems operating in a heterogeneous environment. Applied Stochastic Models In Business And Industry. Maxim Finkelstein (0.5)
  • Modelling extreme risk of the South African Financial Index (J580) using the generalised Pareto distribution. Journal of Economic and Financial Sciences. Owen Jakata (0.5)
  • Statistical modelling of Zimbabwe's international tourist arrivals using both symmetric and asymmetric volatility models. Journal of Economic and Financial Sciences. Tendai Makoni (0.5)
  • Using shrinkage estimators to reduce bias and MSE in estimation of heavy tails. Revstat-Statistical Journal. Gaonyalelwe Maribe (0.33)
  • Sample size determination in bioequivalence studies using statistical assurance. British Journal Of Pharmacology. Arne Ring (0.17)
  • A generalized Bayesian nonlinear mixed-effects regression model for zero-inflated longitudinal count data in tuberculosis trials. Pharmaceutical Statistics. Robert Schall (0.25)
  • Sample size determination in bioequivalence studies using statistical assurance. British Journal Of Pharmacology. Robert Schall (0.17)
  • Physical demands on elite lead rugby union referees. International Journal Of Performance Analysis In Sport. Robert Schall (0.25)
  • Comparison of match-related performance indicators between major professional rugby competitions. International Journal Of Sports Science & Coaching. Robert Schall (0.5)
  • Team performance indicators as predictors of final log position and team success in Aviva Premiership, Guinness Pro 14, French Top 14 and Super Rugby. International Journal Of Performance Analysis In Sport. Robert Schall (0.5)
  • Whole tree water use: Effects of tree morphology and environmental factors. Ecological Indicators. Robert Schall (0.2)
  • A comparison of the time homogeneous and time non-homogeneous markov models for monitoring HIV/AIDS disease progression: Results from patients on ART.. Biomedical Research (India). Claris Shoko (0.33)
  • A superiority of viral load over CD4 cell count when predicting mortality in HIV patients on therapy. Bmc Infectious Diseases. Claris Shoko (0.5)
  • Bayesian testing the process capability indices. South African Statistical Journal. Morne Sjolander (0.33)
  • Bayesian process monitoring schemes for the two-parameter exponential distribution. Communications In Statistics-Theory And Methods. Abrie van der Merwe (0.5)
  • Bayesian testing the process capability indices. South African Statistical Journal. Abrie van der Merwe (0.33)
  • A method for Bayesian regression modelling of composition data. South African Statistical Journal. Sean van der Merwe (1)
  • Bayesian process monitoring schemes for the two-parameter exponential distribution. Communications In Statistics-Theory And Methods. Ruaan van Zyl (0.5)
  • Bayesian testing the process capability indices. South African Statistical Journal. Ruaan van Zyl (0.33)
  • Using shrinkage estimators to reduce bias and MSE in estimation of heavy tails. Revstat-Statistical Journal. Andréhette Verster (0.33)


    For 2018 back to 2016 we list the paper title and all authors. Authors who were UFS staff at time of writing are marked with an asterisk.
2018
  • Hierarchical forecasting of tourist arrivals at the Victoria Falls Rainforest, Zimbabwe. By T Makoni and D Chikobvu*.
  • Optimal mission abort policy with multiple shock number thresholds. By G Levitin and M Finkelstein*.
  • Using shrinkage estimators to reduce bias and MSE in estimation of heavy tails. By J Beirlant*, G Maribe, A Verster*.
  • How publication guidelines for clinical pharmacology trials may help to accelerate knowledge transfer. By A Ring* and K Breithaupt-Grögler.
  • Teaching statistics for Master Students in Africa - background and experiences. By A Ring*.
  • Equivalence Tests in Subgroup Analyses. By A Ring*, M Scharpenberg, S Grill, R Schall*, and W Brannath.
  • Modelling and Forecasting Zimbabwe's Tourist Arrivals Using Time Series Method: A Case Study of Victoria Falls Rainforest. By T Makoni, and D Chikobvu*.
  • A Markov Model to Estimate Mortality Due to HIV/AIDS Using Viral Load Levels-Based States and CD4 Cell Counts: A Principal Component Analysis Approach. By C Shoko, D Chikobvu*, and P Bessong.
  • A Markov model to estimate mortality due to HIV/AIDS using CD4 cell counts based states and viral load: a principal component analysis approach. By D Chikobvu*, and C Shoko.
  • On optimal operational sequence of components in a warm standby system. By M Finkelstein*, N Hazra*, and J Cha.
  • On stochastic comparisons of finite mixtures for some semiparametric families of distributions. By N Hazra* and M Finkelstein*.
  • Time-homogeneous Markov process for HIV/AIDS progression under a combination treatment therapy: cohort study, South Africa. By C Shoko, and D Chikobvu*.
  • Determinants of viral load rebound on HIV/AIDS patients receiving antiretroviral therapy: results from South Africa. By C Shoko, and D Chikobvu*.
  • Modelling tourism demand volatility using a seasonal autoregressive intergrated moving average autoregressive conditional heteroscedasticity model for Victoria Falls Rainforest arrivals in Zimbabwe. By T Makoni, and D Chikobvu*.
  • Penalized bias reduction in extreme value estimation for censored Pareto-type data, and long-tailed insurance applications. By J Beirlant*, G Maribe, and A Verster*.
  • A Markov model to estimate mortality due to HIV/AIDS using CD4 cell counts based states and viral load: a principal component analysis approach. By D Chikobvu*, and C Shoko.
  • An optimal replacement of systems with failure rates described by a random jump process. By J Cha, M Finkelstein*, and G Levitin.
  • Bivariate preventive maintenance of systems with lifetimes dependent on a random shock process. By J Cha, M Finkelstein*, and G Levitin.
  • Heterogeneous standby systems with shocks-driven preventive replacements. By G Levitin, M Finkelstein*, and Y Dai.
  • Mission abort policy balancing the uncompleted mission penalty and system loss risk. By G Levitin, M Finkelstein*, and Y Dai.
  • On a New Shot Noise Process and the Induced Survival Model. By J Cha, and M Finkelstein*.
  • On information-based residual lifetime in survival models with delayed failures. By J Cha, and M Finkelstein*.
  • On preventive maintenance under different assumptions on the failure/repair processes. By J Cha, and M Finkelstein*.
  • On stochastic comparisons of minimum order statistics from the location-scale family of distributions. N Hazra*, M Kuiti, M Finkelstein*, and A Nanda.
  • On stochastic comparisons for population age and remaining lifetime. By J Cha, and M Finkelstein*.
  • Optimal mission abort policy for partially repairable heterogeneous systems. By J Cha, M Finkelstein* and G Levitin.
  • Optimal Mission Abort Policy for Systems Operating in a Random Environment. By G Levitin, and M Finkelstein*.
  • Optimal mission abort policy for systems in a random environment with variable shock rate. By G Levitin, and M Finkelstein*.
  • Optimal Mission Duration for Partially Repairable Systems Operation in a Random Environment. By M Finkelstein* and G Levitin.
  • Optimal mission duration for systems subject to shocks and internal failures. By M Finkelstein* and G Levitin.
  • Optimizing availability of heterogeneous standby systems exposed to shocks. By G Levitin, M Finkelstein*, and Y Dai.
  • Stochastic ordering for populations of manufactured items. By N Hazra*, M Finkelstein*, and J Cha.
  • Point Processes for Reliability Analysis: Shocks and Repairable Systems. By J Cha and M Finkelstein*.
  • Robust fit of Bayesian mixed effects regression models with application to colony forming unit count in tuberculosis research. D Burger, and R Schall*.
  • Robust Bayesian nonlinear mixed-effects modeling of time to positivity in tuberculosis trials. D Burger, R Schall*, and D Chen.
  • A Bayesian approach to inference on the variance of lognormal data. By J Harvey, and A van der Merwe.


2017
  • Penalized bias reduction in extreme value estimation for censored Pareto-type data, and long-tailed insurance applications. By J Beirlant*, G Maribe, and A Verster*.
  • Estimation of extreme inter-day changes to peak electricity demand using Markov chain analysis: A comparative analysis with extreme value theory. By C Sigauke, and D Chikobvu*.
  • Comparisons of performance indicators between Super Rugby and Currie Cup competition during 2014 Season. By R Schoeman, D Coetzee, and R Schall*.
  • Vulnerability mapping as a tool to manage the environmental impacts of oil and gas extraction. By S Esterhuyse, F Sokolic, N Redelinghuys, M Avenant, A Kijko, J Glazewski, L Plit, M Kemp, A Smit, AT Vos, MJ von Maltitz*.
  • Modelling censored losses using splicing: a global fit strategy with mixed Erlang and extreme value distributions. By T Reynkens, R Verbelen, J Beirlant*, and K Antonio.
  • Fitting tails affected by truncation. By J Beirlant*, IF Alves, T Reynkens.
  • A non-linear mixed model approach for excess of loss benchmark rating. By R Verlaak, and J Beirlant*.
  • Bivariate preventive maintenance for repairable systems subject to random shocks. JH Cha, M Finkelstein*, and G Levitin.
  • Value-at-Risk estimation of gold market with Stable and Generalised Hyperbolic Distributions. By K Chinhamu, and D Chikobvu*.
  • Optimal portfolio selection with stochastic maximum downside risk and uncertain implicit transaction costs. By S Muchori, and D Chikobvu*.
  • On stochastic comparisons for load-sharing series and parallel systems. By M Finkelstein*, and NK Hazra*.
  • The performance of univariate goodness-of-fit tests for normality based on the empirical characteristic function in large samples. By JM van Zyl*.
  • Modelling international tourist arrivals and volatility to the Victoria Falls Rainforest, Zimbabwe: Application of the GARCH family of models. By M Tendai, and D Chikobvu*.
  • Exact expressions for the weights used in least-squares regression estimation for the log-logistic and Weibull distribution. By JM van Zyl*.
  • A Bayesian control chart for a common coefficient of variation. By R van Zyl, and AJ van der Merwe*.
  • Bayesian control charts for tolerance limits in the case of normal populations. By R van Zyl, and AJ van der Merwe*.
  • Redundancy optimization for series-parallel phased mission systems exposed to random shocks. By G Levitin, M Finkelstein*, and Y Dai.
  • Preventive maintenance for systems with reparable minor failures. By M Finkelstein*, and M Shafiee.
  • Optimal Mission Duration for Partially Repairable Systems Operating in a Random Environment. By M Finkelstein*, and G Levitin.
  • Optimal backup in heterogeneous standby systems exposed to shocks. By G Levitin, and M Finkelstein*.
  • On stochastic comparisons of maximum order statistics from the location-scale family of distributions. By NK Hazra*, MR Kuiti, M Finkelstein*, AK Nanda.
  • On preventive maintenance of systems with lifetimes dependent on a random shock process. By JH Cha, M Finkelstein*, and G Levitin.
  • On optimal grouping and stochastic comparisons for heterogeneous items. By NK Hazra*, M Finkelstein*, and JH Cha.
  • On a single discrete scale for preventive maintenance with two shock processes affecting a complex system. By M Finkelstein*, I Gertsbakh, and R Vaisman.
  • Effect of element separation in series-parallel systems exposed to random shocks. By G Levitin, and M Finkelstein*.
  • A new stress-strength model for systems subject to stochastic shocks. By G Levitin, and M Finkelstein*.
  • Investigating the Performance of a Variation of Multiple Correspondence Analysis for Multiple Imputation in Categorical Data Sets. By J Nienkemper-Swanepoel, and MJ von Maltitz*.
  • Generalising Ward's Method for Use with Manhattan Distances. T Strauss, and MJ von Maltitz*.
  • Quantifying South Africa's sulphur dioxide emission efficiency in coal-powered electricity generation by fitting the three-parameter log-logistic distribution. By ME Girmay*, and D Chikobvu*.
  • Evaluating risk in precious metal prices with Generalised Lambda, Generalised Pareto and Generalised Extreme Value distributions. By K Chinhamu, C Huang, and D Chikobvu*.
  • Chemotherapy in the Elderly with Non-Small Cell Lung Cancer: A Non-Interventional, Prospective, Multicentric Observational Study. By  DF Heigener, G Hoeffken, D Wuerflein, M Feurer, A Rittmeyer, RM Huber, M Pietsch, A Ring*, K Deppermann.
  • Statistical reporting of clinical pharmacology research. By A Ring*, R Schall*, YK Loke, S Day.
  • Anolyte as an alternative bleach for stained cotton fabrics. By K Seiphetlheng, HJH Steyn, and R Schall*.
  • Morphological and skill-related fitness components as potential predictors of injuries in elite female field hockey players. By M Naicker, D Coetzee, and R Schall*.
  • Time-motion analysis of simulated elite Karate kumite matches. By E Le Roux, FF Coetzee, CJ van Rensburg, and R Schall*.
  • Analysis of Super Rugby from 2011 to 2015. By R Schoeman, D Coetzee, and R Schall*.
  • Precipitation intensity-duration-frequency curves and their uncertainties for Ghaap plateau. By CM Tfwala, LD van Rensburg, R Schall*, SM Mosia, and P Dlamini.
  • Age of diagnosis, incidence and prevalence of recurrent respiratory papillomatosis - A South African perspective. By RY Seedat, and R Schall*.

2016
  • Effect of uncertainty in total parasite infestation on accuracy and precision of estimates of ectoparasiticide efficacy. By R Schall*, DA Burger*, and TP Erasmus.
  • Classical optimal replacement strategies revisited. By M Finkelstein*, M Shafiee, and AN Kotchap*.
  • Justifying the Gompertz curve of mortality via the generalised Polya process of shocks. By JH Cha, and M Finkelstein*.
  • New shock models based on the generalised Polya process. By JH Cha, and M Finkelstein*.
  • On information-based warranty policy for repairable products from heterogeneous population. By H Lee, JH Cha, and M Finkelstein*.
  • On preventive maintenance of systems subject to shocks. By M Finkelstein*, and I Gertsbakh.
  • On some mortality rate processes and mortality deceleration with age. By JH Cha, and M Finkelstein*.
  • On some properties of shock processes in a 'natural' scale. By JH Cha, and M Finkelstein*.
  • Optimal long-run imperfect maintenance with asymptotic virtual age. By JH Cha, and M Finkelstein*.
  • Preventive maintenance of multistate systems subject to shocks. By M Finkelstein*, and I Gertsbakh.
  • Phase I and Phase II - control charts for the variance and generalised variance. By R van Zyl, and AJ van der Merwe*.
  • Estimation under the matrix variate elliptical model. By J van Niekerk, A Bekker, M Arashi, and DJ de Waal*.
  • Regression with an infinite number of observations applied to estimating the parameters of the stable distribution using the empirical characteristic function. By JM van Zyl*.
  • Accuracy and precision of alternative estimators of ectoparasiticide efficacy. By R Schall*, DA Burger*, and HG Luus.
  • Evidence for change: the affective impact of computer-assisted teaching and learning in statistics. By L van der Merwe*, and R Schall*.
  • Bias reduced tail estimation for censored Pareto type distributions. By J Beirlant*, A Bardoutsos, T de Wet, and I Gijbels.
  • Cluster randomised trial of a tailored intervention to improve the management of overweight and obesity in primary care in England. By J Goodfellow, S Agarwal, F Harrad, D Shepherd, T Morris, A Ring*, N Walker, S Rogers, and R Baker.
  • Limited role of culture conversion for decision-making in individual patient care and for advancing novel regimens to confirmatory clinical trials. By PPJ Phillips, CM Mendel, DA Burger*, A Crook, AJ Nunn, R Dawson, AH Diacon, and SH Gillespie.
  • Reliability study of a coherent system with single general standby component. By P Kundu, NK Hazra*, and AK Nanda.
  • Some results on majorisation and their applications. By A Kundu, S Chowdhury, AK Nanda, and NK Hazra*.
  • Stochastic mean absolute deviation model with random transaction costs: securities from the Johannesburg stock market. By S Mushori, and D Chikobvu*.
  • A Multivariate Gamma Distribution applied to compositional data analysis. By DJ de Waal*, R Coetzer*, and S van der Merwe*.
  • On stochastic comparisons for population age and remaining lifetime. By JH Cha, and M Finkelstein*.
  • Tail fitting for truncated and non-truncated Pareto-type distributions. J Beirlant*, IF Alves, and I Gomes.
  • Bayesian process control for the Phase II Shewart-type p-chart. By L Raubenheimer, and AJ van der Merwe*.
  • Mean-of-order p reduced-bias extreme value index estimation under a third-order framework. By F Caeiro, MI Gomes, J Beirlant*, and T de Wet.
  • A world-wide survey and field study in clinical haemostasis laboratories to evaluate FVIII:C activity assay variability of ADYNOVATE and OBIZUR in comparison with ADVATE. By PL Turecek, S Romeder-Finger, C Apostol, A Bauer, A Crocker-Buqué, DA Burger*, R Schall*, and H Gritsch.
  • On ageing concepts for repairable items from heterogeneous populations. By JH Cha, and M Finkelstein*.
  • Rainfall prediction for sustainable economic growth. By R Chifurira, D Chikobvu*, and D Dubihlela.
  • Tail fitting for truncated and non-truncated Pareto-type distributions. J Beirlant*, IF Alves, and I Gomes.
  • On stochastic comparisons for population age and remaining lifetime. By JH Cha, and M Finkelstein*.


BLOEMFONTEIN CAMPUS FACULTY CONTACT

Elfrieda van den Berg (Marketing Manager)
T: +27 51 401 2531
E:vdberge@ufs.ac.za
QWAQWA CAMPUS FACULTY CONTACT

Dilahlwane Mohono (Faculty Officer)
T: +27 58 718 5284
E:naturalscienceqq@ufs.ac.za

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