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16 February 2022 | Story Leonie Bolleurs | Photo Supplied
Unique PhD Journeys
Prof Liezel Lues and her two doctoral students on graduation day. On the left is Dr Modeni Sibande, who is looking forward to ensuring that Public Administration and Management remains relevant to contemporary evolving issues in society. On the right is Dr Maréve Biljohn, who as a student has always shown commitment to do her best in every aspect of her PhD journey.

In nature, one often comes across cool and surreal phenomena. Experiencing rare happenings in the academia is an altogether different encounter. One that Prof Liezel Lues, Professor in the Department of Public Administration and Management at the University of the Free State (UFS), explains as winning the lottery.

Two of Prof Lues’ doctoral students – representing two different institutions – graduated in 2018. Four years later, on the exact same date, 1 March 2022, Drs Maréve Biljohn and Modeni Sibanda will take up their new positions, respectively as Head of the Department of Public Administration and Management at the UFS and Head of the Department of Public Administration at the University of Fort Hare.

 

Social innovation and service delivery

Dr Biljohn, currently Senior Lecturer in the department, did her thesis on the topic: Social innovation and service delivery by local government: a comparative perspective. With work experience in local government, Dr Biljohn had a good idea of the problems that underpin poor service delivery in this sphere of government.

Public participation in integrated development planning: a case study of Buffalo City Metropolitan Municipality, was the title of Dr Sibanda’s thesis. The study revealed how individuals and communities navigate forms of power and raise the critical consciousness of municipal residents, communities, and public officials.

According to Dr Sibanda, his study was motivated by the need to explore how public participation power dynamics influence Integrated Development Planning outcomes.

He believes by doing so, the complexity of how individuals and communities navigate forms of power in public participation platforms and spaces would be unravelled. Unravelling such public participation power dynamics, he says, would raise critical consciousness and address and challenge visible, hidden, and invisible forms of power on these public platforms and spaces. “Often public participation platforms and spaces neglect and ignore the capacity of such spaces to manage the pervasive, complex power dynamics among stakeholders in municipal strategic development planning processes. This focus to my PhD therefore sought to fill that knowledge gap,” adds Dr Sibanda.

Prof Lues says the value link to their research is buoyed in the South African Local Government. “They have both established a niche area that addresses the challenges South African municipalities face,” she adds.


“There is no doubt that they are suitable for the position of head of department at this point.”


Achieving a coveted status in their careers

On experiencing this unique journey, Prof Lues says: “Of all the relations, a relation between a promoter and a student is the most inspiring and admirable one. Any promoter takes the utmost pride when his/her taught students achieve coveted status in their respective careers. To me, it feels like winning the lottery – twice.”

News Archive

Discovery in Scorpius constellation may signify clean energy for Earth
2017-01-23

 Description: Discovery in Scorpius constellation may signify clean energy for Earth Tags: Discovery in Scorpius constellation may signify clean energy for Earth

Earlier this year, a group of international astronomers
announced the discovery of an exotic binary star system,
AR Scorpii. The system is in the Scorpius constellation.
Photos: Supplied

See article on Nature’s website 

In future, stargazers and astronomers will look at the Scorpius constellation near the Milky Way with new eyes. Earlier this year, a group of international astronomers announced the discovery of an exotic binary star system, AR Scorpii. The system is in the Scorpius constellation.

Prof Pieter Meintjes, researcher in the Department of Physics at the University of the Free State (UFS), worked with four colleagues on what he describes as a “wonderful discovery”. This sensational discovery, which could lead to the production of cleaner energy on Earth, will be published in the research journal, Nature, early in 2017.

Model developed to interpret new set of measurements
The exotic binary star which was discovered consists of a red dwarf and a white dwarf revolving around each other every 3,5 hours. The binary system showed very prominent pulsations of 117 and 118 seconds respectively. The pulsations can be explained by a bundle radiation produced by the white dwarf star.

“These new observations have shown that the radiation is strongly polarised, a sign that we are dealing with synchrotron radiation here. Synchrotron radiation is produced by electrons accelerated to extremely high energy levels in the magnetic field of the white dwarf star,” says Prof Meintjes.

He developed a theoretical model to interpret a new set of measurements that was taken by the 1,9 m telescope and the 10 m SALT telescope at the South African Astronomical Observatory (SAA0).

Totally unique phenomenon could contribute to energy production on Earth
“I further indicated that the interaction between the magnetic fields of the white dwarf star and the red dwarf star induces secondary processes that specifically describe the behaviour of the radiation in the radio band and infrared band accurately. AR Sco is the first white-red dwarf binary system of which all the pulsated radiation could be explained by the synchrotron process, which is totally unique,” says Prof Meintjes.

According to Prof Meintjes, the value of the model lies in the fact that the processes which produce the radiation in AR Sco, can also be applied to produce energy on Earth.

 

Plasma reactors are based on roughly the same processes which apply in AR Sco, and with refining, it could be utilised to generate electricity in future. This will be much cleaner than nuclear energy.

 

The model developed by Prof Meintjes explains all the radiation in the system – from radio waves to X-rays – in terms of electrons accelerated to extremely high energy levels by electric fields in the system, which then produce synchrotron radiation over a very wide band of the electromagnetic spectrum.

Prof Meintjes is currently working on a follow-up article examining the evolution of the AR Sco, in other words, the origin of such a unique system and the final state towards which it is evolving. “My vision for the immediate future is therefore to develop a model for the evolution of the source concerned,” he says.

 

 

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