Latest News Archive

Please select Category, Year, and then Month to display items
Previous Archive
20 December 2022 | Story Gerda-Marié van Rooyen | Photo Supplied
Crystal-Donna Roberts
Crystal-Donna Roberts is a multifaceted lady. She appears regularly in soaps and is now a published author too. Speurder Sammi, an Afrikaans book written for early teens, explores themes such as anxiety, trauma, and pain.

She loved mysteries from a young age. Growing up, Crystal- Donna Roberts was fond of Columbo and Murder she wrote. Roberts, who graduated with a BA Drama and Theatre Arts in 2005, says she had always liked the tricky puzzles Scooby-Doo and Nancy Drew had to solve. She eagerly joined them on their missions page by page. Being an actress and having a busy schedule in front of cameras, Roberts actively decided to put time aside last year to write while participating in the Jakes Gerwel mentorship programme for upcoming authors. A lifelong dream came true when she wrote her debut novel, Speurder Sammi: Die blou steen (Detective Sammi: The blue stone). Tafelberg published her mystery-based story, which Roberts launched in September.

“Sammi is a teenager who lives with her artist aunt Valerie. The duo went on holiday visiting Oumie and Dedda in the Northern Cape. Although Sammi will miss her friends, April and Lerato, she is looking forward to a change of scenery. It will also distract her mind from the anticipation of waiting for acceptance at an art school she fancies. However, rural towns are full of surprises – and chancers.”

“There are teenage memories we seldom forget. The memory of growing pains is still vivid in my mind. I recall it and draw inspiration from it.”

Roberts doesn’t have set rituals when she writes. “I allow myself to do what my body and soul likes. Sometimes this means simply sitting down and enjoying a cup of tea.” Looking back on her fellowship, she discovered her love for creating new worlds and allowing the story to develop a storyline of its own. “I’ve learned I still have a lot to learn – this excites me. I also learned the importance of deadlines, even though they are scary.”

The former UFS student says she chose the Northern Cape as the setting for her story as it is one of the most beautiful parts of our country. “It is one of the prettiest parts of our country. I wanted my character to explore new horizons, but to remain between her loved ones when she goes through her healing and strengthening process.” Although Roberts is determined to write her second book, the details are still unknown. In the meantime, she enjoys reading Walter Russel’s The Secret of Light. She draws inspiration from Andrew Davidson’s The Gargoyle. “Apart from the story that deeply resonates with me, I can appreciate the detail in the story and Davidson’s writing style.”

To enquire about stockists selling Speurder Sammi, visit www.nb.co.za.


Presenter and television, theatre and film actress, Roberts is currently starring in kykNET’s drama series, Fraksie. She is also known for her roles in 7de Laan, Getroud Met Rugby, Montana, Vallei van Sluiers, Krotoa, and The Endless River.

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.”

We use cookies to make interactions with our websites and services easy and meaningful. To better understand how they are used, read more about the UFS cookie policy. By continuing to use this site you are giving us your consent to do this.

Accept