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30 November 2021 | Story Leonie Bolleurs | Photo Supplied
Prof Johan Meyer, Senior Professor in the Department of Mathematics and Applied Mathematics, says he is looking forward to learning from others in the field during this collaboration.

What do trees, black holes, earthquakes, and time structures have in common? 

The answer to this question is that these, in one way or the other, form the focus of some of the abstracts delivered during the Annual Congress of the South African Mathematical Society. The society has as its main objective the advancement of mathematics in South Africa. 

The Department of Mathematics and Applied Mathematics at the University of the Free State (UFS), in conjunction with the South African Mathematical Society (SAMS 2021), is hosting the 64th Annual Congress of the society this week (29 November to 1 December 2021).

Prof Johan Meyer, Senior Professor in the department, says the congress, which is being conducted online, is focusing on all aspects of mathematics research, including history and teaching.

Learning from others in the field

The congress, which aims to share the latest research results in mathematics, will be attended by staff and students from universities across South Africa as well as abroad. “Anyone from the public is, of course, welcome to attend or even share their results if they are also involved in mathematics research,” adds Prof Meyer. 

He says that he is looking forward to learning from others in the field during this collaboration. 

The congress will include discussions on more than 120 abstracts, covering category theory, algebra, topology, logic; functional analysis and operator theory; finite groups and combinatorial structures; graph theory and combinatorics; lie symmetries and nonlinear differential equations; and applied and numerical mathematics.

Array of interesting topics presented

“It is important in many areas of science and engineering to predict and to simulate rare, random events, the occurrence of which may have negative or even catastrophic consequences. Examples include internet server overflows, mechanical breakdowns, floods, and financial crashes. Rare events can also have a positive effect, triggering for example chemical reactions or driving genetic evolution via random mutations.” Prof Hugo Touchette from Stellenbosch University will be shedding some light on this interesting topic in his presentation on Predicting and simulating rare events.

Prof Jeandrew Brink, Associate Professor in the Department of Mathematics and Applied Mathematics at the UFS, is presenting a plenary session on the topic Determining the geometry of strong field space-times in spite of tacitly assuming the answer during every measurement. In South Africa, state-of-the art pulsar timing data from the MeerKAT telescope will make a considerable contribution to conducting GR orbital tests. Prof Brink comments on how pulsar timing tests differ from tests using gravitational wave detectors, as well as what we can learn from the framework already employed to perform pulsar timing measurements.

News Archive

Care centre goes high-tech to help sexual abuse victims
2016-11-25

Description: Colposcope Tags: Colposcope

The colposcope, donated by the Discovery Fund,
will be used during gynaecological examinations
to detect any irregularities.
Photo: Supplied

Rape is one of South Africa’s most pressing social problems. Rape levels in the country are often discussed and reported on, but it does not deter perpetrators from this behaviour. According to Africa Check, of the more than 42 000 rape cases reported in 2015, 15 790 were child rape cases.

In an effort to assist victims of sexual assault and rape, the University of the Free State (UFS) Department of Family Medicine adopted the Tshepong Thuthuzela Care Centre, under the leadership of UFS lecturer Dr Mariaan Kotze.

The Discovery Fund donated a colposcope to Tshepong Thuthuzela Care Centre, an instrument that works with the help of a bright light and which is used to examine victims of abuse. It has also become a standard of good practice in the assessment of child abuse worldwide. According to Dr Kotze, the new instrument will also be used for training health practitioners by rendering clinical forensic services to abuse victims.

Managing complex issues

The care centre works with between 80 and 120 victims of rape each month, a third of whom are children under 14 years of age. According to Dr Kotze, the management of child sexual abuse victims is more complex than with adults; as there is a higher chance of missing or over-diagnosing abnormalities. Also, she says, the examination process is often observed by a group of healthcare practitioners, an experience which is often intrusive and intimidating for the child. With the colposcope, the timeframe of the examination is shortened, and can be captured and viewed in real time, without the victim being present.

Best care for victims

The colposcope is a magnifier and light source used during gynaecological examinations. It is instrumental in providing the best care to victims of sexual abuse, and helps diagnose and assist in the treatment of cases of abuse. Its ability to capture and review images at the time of examination allows for retrospective research, and improves the ability of expert witnesses in court cases.

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