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18 January 2023 | Story Edzani Nephalela | Photo Henco Myburg
Thembeni Nxangisa
Free State MEC for Agriculture and Rural Development, Thembeni Nxangisa, representing Minister Barbara Creecy during the Fifth Global Change Conference at the University of the Free State

From 30 January to 2 February 2023, the University of the Free State is hosting researchers, members of industry and government, businesspeople, funders, and foreign diplomatic missions for the fifth National Global Change Conference.

The purpose of the conference is to share and debate current local research and development initiatives that form part of the Global Change Grand Challenge (GCC5), one of the focus areas developed under the Department of Science and Innovation's Ten-Year Innovation Plan.  

The GCC5 supports knowledge generation and technological innovation to enable South Africa, Africa, and the world to respond to global environmental change, including climate change, in an informed and innovative way.

The four-day event is taking place on the Bloemfontein Campus of the UFS under the theme: ‘Research and innovation accelerating transformations to global sustainability’. It is jointly organised by the Department of Science and Innovation, the National Research Foundation, the South African Global Change Science Committee, and the UFS.  

Topics on the conference agenda include the state of the southern oceans; the role of physics in power grids; climate and health, water resources, and global crises; and agriculture in a changing environment, among other topics.  

For more information on GCC5, kindly click here.

Follow the discussion on UFS social media platforms.

 



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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