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05 April 2024 | Story DR NITHA RAMNATH

The Vice-Chancellor and Principal of the University of the Free State, Prof Francis Petersen, has the pleasure of inviting you to a guest lecture presented by H.E. Dr Reuben E Brigety, the United States Ambassador to South Africa.

Date: Tuesday 23 April 2024
Time: 15:00-16:00
Venue: Centenary Complex, Bloemfontein Campus

RSVP here by no later than 19 April 2024.


About the speaker

Reuben E Brigety II was confirmed as the 29th United States Ambassador to the Republic of South Africa on 21 July 2022.

Previously, he served as the 17th Vice-Chancellor of the University of the South and Mayor of Sewanee from June 2020 until December 2021, and as the Dean of the Elliott School of International Affairs of the George Washington University from 2015 to 2020. Ambassador Brigety’s most recent diplomatic assignment was serving as the US Representative to the African Union and US Permanent Representative to the UN Economic Commission for Africa from September 2013 to September 2015. Previously, Ambassador Brigety served as the Deputy Assistant Secretary of State in the Bureau of African Affairs and as Deputy Assistant Secretary of State in the Bureau of Population, Refugees, and Migration.

A native of Jacksonville, Florida, Ambassador Brigety also held appointments as Assistant Professor of Government and Politics at George Mason University and at the School of International Service at the American University between August 2003 and April 2009. In addition, Ambassador Brigety was a researcher with the Arms Division of Human Rights Watch (HRW) from August 2001 to May 2003, where he conducted research missions in Afghanistan and Iraq. Before joining HRW, Ambassador Brigety was an active-duty US naval officer and held several staff positions in the Pentagon and in fleet support units.

Ambassador Brigety is a 1995 Distinguished Midshipman Graduate of the US Naval Academy, where he earned a BSc in Political Science (with merit), served as the Brigade Commander, and received the Thomas G Pownall Scholarship. He also holds an MPhil and a PhD in International Relations from the University of Cambridge, England, as well as a Doctor of Humane Letters (honoris causa) from Old Dominion University. Ambassador Brigety is a life member of the Council on Foreign Relations, a recipient of the council’s International Affairs Fellowship, and a fellow of the American Academy of Diplomacy.He is married to Dr Leelie Selassie, and together they have two sons.

News Archive

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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