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29 May 2019 | Story Ruan Bruwer | Photo Reg Caldecott
Khanyisa Chawane
Khanyisa Chawane is one of 12 members of the national netball team to the World Cup in July. Other team members include former students of the University of the Free State, Maryka Holtzhausen and Karla Pretorius.
Exactly one quarter of the South African netball team to the World Cup tournament in England in July will consist of current and former students from the University of the Free State (UFS).

Less than a year after making her Protea debut, Khanyisa Chawane was selected for the team alongside former UFS students, Maryka Holtzhausen and Karla Pretorius.

Chawane is a fifth-year BSc Geography and Statistics student who made her Kovsie debut in 2015. 

“The selection means so much to me. It’s such an honour and privilege to represent my country at this high level of netball. I’m super excited about it, because any team can win it this year,” Chawane, a centre court player, said.

Both Chawane (2018) and Pretorius (2014 and 2015) were previously named as die best student netball player in the country.

Pretorius, with 80 caps behind her name and widely regarded as the best goal defender in the world, represented and captained the UFS team from 2009 to 2015. She is the Protea vice-captain.

Holtzhausen, a goal attack and only the second player to reach 100 tests for the Proteas (106 in total), played for and captained the UFS between 2007 and 2014. She played her netball in England over the past couple of months. When she returns from the World Cup, she will again take up her part-time job as a sports manager at KovsieSport.

Burta de Kock, who has coached all three players at the UFS, said they serve as a motivation and example for the current group of players from the UFS.

News Archive

Harvard couple to present lectures on Biostatistics and Mathematics at the UFS
2015-12-07


Professor Donald Rubin

Prof Donald Rubin (John L. Loeb Professor of Statistics at Harvard University) and Elizabeth Zell (MStat - mathematical statistician in the Division of Bacterial Diseases) will visit the University of the Free State (UFS) where they will present lectures on their respective work.

Over his prestigious academic career, Prof Don Rubin’s 400 publications and 13 books have earned him around 180 000 citations at an h-index of 113. He is one of the most cited statisticians/mathematicians/economists/psychologists in the world over the last 10 -15 years. He has supervised 35 PhD candidates as sole-supervisor, 17 more as co-supervisor, with a further eight in the pipeline.

Prof Rubin who will meet with UFS academics in the Department of Mathematics and Actuarial Sciences will also deliver a lecture: Rerandomisation to improve covariate balance in experiments.

Randomised experiments are the “gold standard” for estimating causal effects, yet in practice, chance imbalances often exist in covariate distributions between treatment groups. If covariate data are available before units are exposed to treatments, these chance imbalances can be mitigated by first checking covariate balance before the physical experiment takes place. Provided a precise definition of imbalance has been specified in advance, unbalanced randomisations can be discarded, followed by a rerandomisation. This process can continue until a randomisation yielding balance according to the definition is achieved. By improving covariate balance, rerandomisation provides more precise and trustworthy estimates of treatment effects.

Prof Rubin received an honorary professorship from the Faculty of Natural and Agricultural Sciences at the UFS.


Elizabeth Zell

The lecture will take place on:
Date: Tuesday 8 December 2015
Time: 16:00
Venue: Albert Wessels Auditorium, Bloemfontein Campus

Zell earned her Master’s degree in Statistics at North Carolina State University, and for more than two decades, was an active bio-statistical researcher in various offices of the Centers for Disease Control (CDC). Since 2013, she has been the Principal Statistician and President of Stat-Epi Associates, Inc. Her 150+ publications have earned her 14 500 citations at an h-index of over 50. She is a Fellow of the American Statistical Association, and, in 2010, she received the Statistics Section Government Award for outstanding contributions to statistics and public health by the American Public Health Association. During her career at the CDC, she earned more than 20 CDC research awards and honours.

She will deliver two lectures at the UFS. The first is entitled A Potential Outcomes Approach to Documenting the Public Health Impact of the Introduction of PCV13 for the Prevention of Invasive Pneumococcal Disease. The topic of her second lecture is: Assessing the Effectiveness of Intrapartum Antibiotic Prophylaxis for Prevention of Early-Onset Group B Streptococcus Disease through Propensity Score Design

Elizabeth’s lectures will take place on:
Date: Wednesday 9 December 2015
Time: 10:45 and 13:00
Venue: West Block 111, Bloemfontein Campus

For more information, please contact Dr Michael von Maltitz at VMaltitzMJ@ufs.ac.za.

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