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12 May 2020 | Story Andre Damons | Photo Pexels

A data scientist and research coordinator at the University of the Free State (UFS), in collaboration with his supervisor at the University of Pretoria (UP), is at the forefront of the fight against the Covid-19 virus with accurate data and analysis.
Herkulaas Combrink of the Centre for Teaching and Learning at the UFS and PhD candidate in Computer Science at the UP, said accurate data is important to prevent widespread panic and sensationalism during a global disaster such as the current pandemic. This information helps people to make informed decisions and to reduce their exposure to the threat of the virus.

Assisting decision-makers

“I, along with colleagues from the World Health Organization, the Centers for Disease Control and Prevention in the USA, the provincial office of the Centers for Disease Control and Prevention, provincial clinicians, and the Free State Department of Health led by Dr David Motau, have been able to progress significantly in terms of evidence-based tools to assist provincial and national decision-makers during these turbulent times.”
“It does come at a cost, though, in that we have worked continuously since the lockdown, dedicating all our time and efforts to the department from all over to ensure that we are not part of some of the global statistics we have seen,” said Combrink. 

A paper written together with his supervisor, Dr Vukosi Marivate, has also been accepted by the Department of Higher Education and Training (DHET)-accredited Data Science Journal.  This paper is related to a framework for sharing public data to the public in a way that is useful, usable, and understandable. 

Ongoing projects

Combrink said it is hard to name all those who are/were involved in the great work done by the Free State Department of Health, but some of them include Dr Elizabeth Reji (Head of Department, Family Medicine), Dr Collin Noel (surgeon, senior lecturer at the UFS), Dr Sammy Mokoena (community health registrar, UFS), Dr Ming-Han Motloung (public health medicine specialist, senior lecturer, UFS), Dr Perpetual Chikobvu (Director: Information Management at the Department of Health, affiliated lecturer at the UFS), as well as Alfred Deacon (lecturer at the UFS), who have worked at some point during this short space of time on one of the many projects. 

Some of the projects include the following:

• A provincial database for screening and monitoring.
• A data pipeline and assembly of hospital information flow, liaised with the NICD, Vodacom, and the different district managers to ensure that the pipeline occurs in a timely manner.
• Digitised paper-based capturing tools for rapid data capturing and processing.
• Incorporated state-of-the-art visualisation tools to action data into useful information for decision-makers in certain areas.
• Provided both provincial and national projections, stress testing different scenarios using a variety of statistical, computational, and/or machine-learning approaches to add to the already existing projections of the Council for Scientific and Industrial Research (CSIR).
• Training healthcare professionals in the field to apply these tools within their own districts.
No easy task

“These aforementioned feats were by no means easy and are not completed yet, but we are getting there. In the foreseeable future, I will be working closely with national and international researchers to deploy a tool for hospital managers in the Free State that will assist them when we move from level 5 to any level below.”

“In addition to this, I am constantly providing support to the Free State Department of Health regarding any analysis required for decision-making purposes. The teams we work in comprise highly competent individuals with a passion for solving problems from multidisciplinary perspectives,” according to Combrink.

News Archive

Stress and fear on wild animals examined
2013-06-04

 

Dr Kate Nowak in the Soutpansberg Mountain
Photo: Supplied
04 June 2013

Have you ever wondered how our wild cousins deal with stress? Dr Kate Nowak, visiting postdoctoral researcher at the Zoology and Entomology Department at the UFS Qwaqwa Campus, has been assigned the task to find out. She is currently conducting research on the effects that stress and fear has on primate cognition.

The Primate and Predator project has been established over the last two years, following Dr Aliza le Roux’s (also at the Zoology and Entomology Department at Qwaqwa) interest in the effects of fear on primate cognition. Dr le Roux collaborates with Dr Russel Hill of Durham University (UK) at the Lajuma Research Centre in Limpopo and Dr Nowak has subsequently been brought in to conduct the study.

Research on humans and captive animals has indicated that stress can powerfully decrease individuals’ cognitive performance. Very little is known about the influence of stress and fear on the cognition of wild animals, though. Dr Nowak will examine the cognition of wild primates during actual risk posed by predators. This is known as the “landscape of fear” in her research.

“I feel very privileged to be living at Lajuma and on top of a mountain in the Soutpansberg Mountain Range. We are surrounded by nature – many different kinds of habitats including a tall mist-belt forest and a variety of wildlife which we see regularly, including samangos, chacma baboons and vervet monkeys, red duiker, rock hyrax, banded mongooses, crowned eagles, crested guinea fowl and cape batis. And of course those we don't see but find signs of, such as leopard, genet, civet and porcupine. Studying the behaviour of wild animals is a very special, and very humbling, experience, reminding us of the diversity of life of which humans are only a very small part,” said Dr Nowak.

At present, the research team is running Giving up Densities (GUD) experiments. This represents the process during which an animal forsakes a patch dense with food to forage at a different spot. The animal faces a trade-off between meeting energy demands and safety – making itself vulnerable to predators such as leopards and eagles. Dr le Roux said that, “researchers from the US and Europe are embracing cognitive ecology, revealing absolutely stunning facts about what animals can and can’t do. Hence, I don’t see why South Africans cannot do the same.”

Dr Nowak received the Claude Leon Fellowship for her project. Her research as a trustee of the foundation will increase the volume and quality of research output at the UFS and enhance the overall culture of research. Her analysis on the effect that stress and fear have on wild primates’ cognition will considerably inform the emerging field of cognitive ecology.

The field of cognitive ecology is relatively new. The term was coined in the 1990s by Les Real to bring together the fields of cognitive science and behavioural ecology.


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