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14 January 2019 | Story Eugene Seegers | Photo Anja Aucamp
Study Bug Bites Historian Early
Prof Corene de Wet, South Campus researcher, is a dedicated historian and educator.

From a childhood dream of being a historian, to a decades-long educator and double doctorate-holder, Prof Corene de Wet has led an eventful life. Realising that her undergrad qualification on its own would not get her a job, she completed the Higher Diploma in Education at the then Potchefstroom University for Christian Higher Education. However, “just to buy some time for myself,” she decided to study part-time while teaching in Winburg.

Prof De Wet calls it “being bitten by the part-time study bug.” By 1991, she had obtained her BEd (an honours degree at the time), MEd, and DEd degrees. In 1999, she graduated with a PhD in History. Today, Prof De Wet is still a research associate on our South Campus.

Tremendous milestones and mentors

Dr Lynette Jacobs, co-researcher on several projects, says, “Prof De Wet was the first woman to receive a full professorship in the Faculty of Education, and the first woman in the faculty to obtain an NRF rating. She received her professorship at a time when the academic world belonged to men. She outclassed her peers, rising head and shoulders above the crowd.”

Prof De Wet says her superhero is Prof Daniella Coetzee, South Campus Principal and long-time colleague. “Prof Coetzee is a brilliant academic and organiser. She makes every member of her staff feel special. I am ever thankful that she saw the need for a researcher on the South Campus and that she appointed me in this position,” says Prof De Wet.

“She is a seasoned academic who
still enjoys international recognition.”
—Dr Lynette Jacobs.

Generational history and work ethic

Although much has changed in education since her initial research, Prof De Wet believes that both her doctoral dissertations still bear scrutiny. Regarding the zeitgeist and its impact on the written history of a nation, Prof De Wet says, “We regularly hear many voices today who say that history must be ‘rewritten’. My thesis dealt with exactly that: How different generations of historians wrote histories influenced by the spirit of the time, or by textbooks, or by their own political or world views, or their philosophy on life. Thus, different generations interpret the same events differently.”

During a career spanning more than four decades, Prof De Wet has upheld a strong work ethic. This has enabled her to maintain her C-rating as an NRF researcher. “If one doesn’t dare, if you are too afraid of critique or failure, you won’t get anywhere in academia,” she says, adding, “Criticism is part of academic life. Therefore, take chances, and learn from healthy, constructive criticism.”

News Archive

Fight against Ebola virus requires more research
2014-10-22

 

Dr Abdon Atangana
Photo: Ifa Tshishonge
Dr Abdon Atangana, a postdoctoral researcher in the Institute for Groundwater Studies at the University of the Free State (UFS), wrote an article related to the Ebola virus: Modelling the Ebola haemorrhagic fever with the beta-derivative: Deathly infection disease in West African countries.

“The filoviruses belong to a virus family named filoviridae. This virus can cause unembellished haemorrhagic fever in humans and nonhuman monkeys. In literature, only two members of this virus family have been mentioned, namely the Marburg virus and the Ebola virus. However, so far only five species of the Ebola virus have been identified, including:  Ivory Coast, Sudan, Zaire, Reston and Bundibugyo.

“Among these families, the Ebola virus is the only member of the Zaire Ebola virus species and also the most dangerous, being responsible for the largest number of outbreaks.

“Ebola is an unusual, but fatal virus that causes bleeding inside and outside the body. As the virus spreads through the body, it damages the immune system and organs. Ultimately, it causes the blood-clotting levels in cells to drop. This leads to severe, uncontrollable bleeding.

Since all physical problems can be modelled via mathematical equation, Dr Atangana aimed in his research (the paper was published in BioMed Research International with impact factor 2.701) to analyse the spread of this deadly disease using mathematical equations. We shall propose a model underpinning the spread of this disease in a given Sub-Saharan African country,” he said.

The mathematical equations are used to predict the future behaviour of the disease, especially the spread of the disease among the targeted population. These mathematical equations are called differential equation and are only using the concept of rate of change over time.

However, there is several definitions for derivative, and the choice of the derivative used for such a model is very important, because the more accurate the model, the better results will be obtained.  The classical derivative describes the change of rate, but it is an approximation of the real velocity of the object under study. The beta derivative is the modification of the classical derivative that takes into account the time scale and also has a new parameter that can be considered as the fractional order.  

“I have used the beta derivative to model the spread of the fatal disease called Ebola, which has killed many people in the West African countries, including Nigeria, Sierra Leone, Guinea and Liberia, since December 2013,” he said.

The constructed mathematical equations were called Atangana’s Beta Ebola System of Equations (ABESE). “We did the investigation of the stable endemic points and presented the Eigen-Values using the Jacobian method. The homotopy decomposition method was used to solve the resulted system of equations. The convergence of the method was presented and some numerical simulations were done for different values of beta.

“The simulations showed that our model is more realistic for all betas less than 0.5.  The model revealed that, if there were no recovery precaution for a given population in a West African country, the entire population of that country would all die in a very short period of time, even if the total number of the infected population is very small.  In simple terms, the prediction revealed a fast spread of the virus among the targeted population. These results can be used to educate and inform people about the rapid spread of the deadly disease,” he said.

The spread of Ebola among people only occurs through direct contact with the blood or body fluids of a person after symptoms have developed. Body fluid that may contain the Ebola virus includes saliva, mucus, vomit, faeces, sweat, tears, breast milk, urine and semen. Entry points include the nose, mouth, eyes, open wounds, cuts and abrasions. Note should be taken that contact with objects contaminated by the virus, particularly needles and syringes, may also transmit the infection.

“Based on the predictions in this paper, we are calling on more research regarding this disease; in particular, we are calling on researchers to pay attention to finding an efficient cure or more effective prevention, to reduce the risk of contamination,” Dr Atangana said.


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