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17 December 2018 | Story Xolisa Mnukwa
Karla takes netball world by storm
Karla Pretorius, vice-captain of the Protea netball team, has become a leading player in world netball.

The University of the Free State (UFS) has produced a number of exceptional netball players over the years, but none quite on the level of Karla Pretorius, who is widely considered as probably the very best in her position.

 

A whole new level


Pretorius, who is completing her postgraduate studies in Dietetics, was already deemed one of the best when she left for Australia at the end of 2016; however, she has since risen to a whole new level. The Protea vice-captain plays for the Sunshine Coast Lightning in Australia’s Suncorp Super Netball league, the world’s leading competition. She is scheduled to return there again next year. Karla comfortably leads the stats with a total of 50 intercepts and was named in the Team of the Tournament.

 

According to the former Australian coach, Norma Plummer, who is now at the helm of the Proteas, “Karla currently has to be one of the best, if not the best, goal defenders playing at this moment in time.”

 

Karla’s ability to come through with speed-anticipating interceptions is something that is so exciting to watch. She is very versatile and can switch from one-on-one to split circle or other defensive styles, explained Norma. She says Karla is light in stature but physically very strong.

 

Keep on improving

 

According to Pretorius, who played for the Kovsies between 2009 and 2015, playing in an environment where every possible aspect gets attention – with emphasis on detail – has benefited her immensely. “Everything is done so professionally to eventually push you to become the best possible player.” Karla explained that she experiences challenges in many fields of her life but has the chance to play with and against the best players with different skills, which helps her to keep on improving and bettering her craft.

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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