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29 March 2019 | Story Lacea Loader
Edward Kiesswetter
Edward Kieswetter, newly appointed SARS Commissioner.

The Chairperson of the Council of the University of the Free State (UFS), Mr Willem Louw, extended a message of congratulations to Mr Edward Kieswetter on his appointment by President Cyril Ramaphosa this week as Commissioner of the South African Revenue Service (SARS).

Mr Kieswetter served as Deputy Chairperson of the UFS Council from 2008 to 2014 and was Visiting Professor at the university’s Business School until 2018.

“On behalf of the Council and the university community, I wish Mr Kieswetter well in his work as newly appointed SARS Commissioner. It is evident that the high-level selection panel made an exceptionally good choice for this crucial position. Mr Kieswetter’s vast experience as former SARS deputy commissioner, his subsequent track record of transformative leadership, and his experience in turning around a large institution will serve him well in this new role,” says Mr Louw.

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Dr Abdon Atangana cements his research globally by solving fractional calculus problem
2014-12-03

 

Dr Abdon Atangana

To publish 29 papers in respected international journals – and all of that in one year – is no mean feat. Postdoctoral researcher Abdon Atangana at the Institute for Groundwater Studies at the University of the Free State (UFS) reached this mark by October 2014, shortly before his 29th birthday.

His latest paper, ‘Modelling the Advancement of the Impurities and the Melted Oxygen concentration within the Scope of Fractional Calculus’, has been accepted for publication by the International Journal of Non-Linear Mechanics.

In previously-published research he solved a problem in the field of fractional calculus by introducing a fractional derivative called ‘Beta-derivative’ and its anti-derivative called ‘Atangana-Beta integral’, thereby cementing his research in this field.

Dr Atangana, originally from Cameroon, received his PhD in Geohydrology at the UFS in 2013. His research interests include:
• the theory of fractional calculus;
• modelling real world problems with fractional order derivatives;
• applications of fractional calculus;
• analytical methods for partial differential equations;
• analytical methods for ordinary differential equations;
• numerical methods for partial and ordinary differential equations; and
• iterative methods and uncertainties modelling.

Dr Atangana says that, “Applied mathematics can be regarded as the bridge between theory and practice. The use of mathematical tools for solving real world problems is as old as creation itself. As written in the book Genesis ‘And God saw the light, that it was good; and divided the light from the darkness’, the word division appears here as the well-known method of separation of variables, this method is usually employed to solve a class of linear partial differential equations”.

“A mathematical model is a depiction of a system using mathematical concepts and language. The procedure of developing a mathematical model is termed mathematical modelling. Mathematical models are used not only in natural sciences, but also in social sciences such as economics, psychology, sociology and political sciences. These models help to explain systems and to study the effects of different components, and to make predictions about behaviours.”

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