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10 October 2018 | Story UFS | Photo Leonie Bolleurs
Two from Kovsies win Agricultural Student of the Year competition
The competition was an opportunity to force yourself out of your comfort zone and to benchmark yourself against students from other universities. Chéri-Lynn Steyn is pictured here with Mario van den Heever, winner of the Animal Science category of the competition.
This year, two Kovsies won the Old Mutual and Plaas Media Agricultural Student of the Year titles. Chéri-Lynn  Steyn was named the best Agricultural Economics student, and Mario van den Heever was the best Animal Science student. 

Chéri-Lynn  is currently doing her final year of BScAgric in Animal Science and Agricultural Economics. After obtaining her master’s degree, she would like to write modelling programmes for livestock, either for feeding pens or grazing systems. “This is something which fascinates me,” said Cheri-Lynn.

On obtaining his master’s, Mario (currently a final-year student) would like to follow the entrepreneurial route. After winning the competition, he believes that his chosen study field was the right career for him.

The main objective of the competition was to encourage students to pursue careers in an agricultural field. Students are therefore motivated to critically reflect on the major issues within the agricultural sector.

Strong competition

Students from the agricultural faculties of the University of the Free State, the University of Pretoria, Stellenbosch University, and the University of KwaZulu-Natal participated in the competition. 

Among others, they had to submit an essay of 5 000 words on a prescribed topic. Following this, a semi-final was held at each university during which the students had to present their essays and the best student in each of the subject fields for that particular university was chosen. The students competed in the categories Agricultural Economics, Animal Science, and Crop Production. 

Great opportunity for benchmarking

In Agricultural Economics – the category in which Chéri-Lynn  was named the winner – the topic of land expropriation without compensation was investigated, and the question was put whether South Africa would derive any socio-economic benefit from the proposed expropriation.

In Animal Science – which was won by Mario – students had to investigate the South African meat classification system. The question which was asked was whether the current system could be reformed to meet the needs of modern meat consumers in terms of meat quality and whether an international grading system should be adopted.

The Head of the Department of Agricultural Economics at the UFS, Dr Frikkie Maré, said he was very proud of the students. Both of them are currently research assistants in the department.

“The UFS prepares its students very well for the workplace. There are many opportunities to get exposure in the industry; we have almost every week someone from a well-known company to talk to us as students, or even a course, a congress or a farmer’s day that we have to attend,” said Chéri-Lynn .

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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