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07 May 2025 | Story Precious Shamase | Photo Supplied
Dr Regret Sunge
Dr Regret Sunge – the newly rated NRF Y2 academic.

The University of the Free State (UFS) is proud to announce that Dr Regret Sunge, Lecturer in the Department of Economics and Finance within the Faculty of Economic and Management Sciences, has been awarded a prestigious Y2 rating by the National Research Foundation (NRF). This significant achievement highlights Dr Sunge's exceptional potential as a rising leader in the field of economics and finance.

The NRF Y2-rating is bestowed upon young researchers, typically under the age of 40 and within five years of obtaining their PhD, who have demonstrated considerable potential to establish themselves as leaders in their area of expertise. Dr Sunge's inclusion among the 3,8% of newly rated researchers in South Africa highlights the quality and impact of his work.

Dr Sunge expressed his excitement, stating, "I am thrilled to have received the NRF Y2-rating for the period 1 January 2025 to 31 December 2030. Receiving such recognition through this meticulous process in the field of Economics and Finance – which has a share of only 4,9% of total rated researchers – is even more amazing." He further emphasised the rigorous nature of the NRF rating process, and the insightful feedback received.

 

Factors contributing to this recognition

Dr Sunge attributes his success to a combination of personal dedication, collaborative efforts, and institutional support. His PhD thesis provided a strong foundation, with three of the five reviewed papers originating from this work. Subsequent research collaborations with international peers fostered during his PhD journey further enriched his research by integrating the critical fields of agricultural production and environmental sustainability. The growing number of citations his work has received speaks to its increasing relevance and impact.

The academic also acknowledged the significant influence of key individuals on his research journey, including his PhD supervisor, Prof Nicholas NgepahDr Delphin Kamanda Espoir – a research partner, and his postdoctoral host, Dr Calvin Mudzingiri.

Beyond academic research, Dr Sunge's engagement in research consultation with regional and international organisations has played a vital role. In 2022, he formed a team within the United Nations Young Economists Network (UN-YEN) to study Africa's macroeconomic growth. Additionally, he contributed as a research assistant to the Organisation of Economic Cooperation and Development (OECD) and the African Union Commission (AUC) for their annual Africa Development Dynamics (AfDD) publication.

Dr Sunge also highlighted the crucial institutional support he received from the University of the Free State, specifically the Faculty of Economic and Management Sciences (EMS) on the Qwaqwa Campus, where he was a postdoctoral research fellow at the time of application.

 

Impact of the NRF rating on research standing

The Y2 rating is already proving to be a catalyst for Dr Sunge's research endeavours. "It’s a motivator, I am more confident, and it has greatly enhanced my CV," he noted. He anticipates that this recognition will unlock opportunities for further collaborations and access to competitive research grants and funding programmes, both nationally and internationally.

Furthermore, Dr Sunge's achievement while based on the Qwaqwa Campus enhances the University of the Free State's reputation for supporting young researchers and fostering excellence across all its campuses. His rating serves as a significant source of inspiration for his colleagues on the Qwaqwa Campus, particularly within EMS, where NRF-rated researchers are still few. Dr Sunge hopes that his success will encourage colleagues in the faculty to pursue similar achievements through commitment, dedication, and collaboration.

 

Research focus and its importance

Dr Sunge's research primarily focuses on the intersection of agricultural production and environmental sustainability. His work addresses the critical challenge of ensuring food security amid the growing impact of climate change in a sustainable manner. Recognising the dual challenge of increasing agricultural output to combat food insecurity while mitigating climate change, his research aims to inform environmentally sustainable agrifood systems in South Africa and beyond.

Specifically, his research holds local relevance for Phuthaditjhaba, where livestock agriculture is a significant part of the local economy, with the potential to contribute to more sustainable livelihoods. Utilising a range of econometric methodologies, his research approach is adaptable to various fields of study, facilitating collaboration with researchers from diverse backgrounds.

Acknowledging the dynamic nature of research in economics, particularly in econometrics and data analysis, Dr Sunge emphasises the importance of continuous learning through conferences and workshops. He aims to further develop his econometric and critical thinking skills, as well as sharpen his writing abilities, to elevate his research to new heights.

 

Future research trajectory

Looking ahead, Dr Sunge envisions a research trajectory that combines academic rigour with impactful societal engagement. This involves identifying research problems, providing in-depth academic analysis, and developing solutions that directly benefit communities. His future includes initiating research-based interventions and conducting impact assessments. Achieving this vision necessitates securing research grants, supervising postgraduate students, and actively engaging in community initiatives.

 Over the next five years, Dr Sunge aims to transition from a Y2 to a C-rated researcher, a goal that requires careful planning to balance his research and teaching responsibilities. While committed to advancing his research, Dr Sunge remains passionate about teaching and ensuring that his research activities enhance, rather than detract from, his classroom engagement.

 Dr Sunge’s achievement of the NRF Y2-rating is a significant milestone, both for his personal career and for the University of the Free State. His dedication, collaborative spirit, and impactful research focus serve as an inspiration to colleagues and aspiring economists alike. As Dr Sunge eloquently stated, "My word to aspiring economists, especially from marginalised circumstances, is that with the right mindset, commitment and dedication, we can be counted."

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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