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18 June 2019 | Story Leonie Bolleurs | Photo Leonie Bolleurs
Dr Christine Engelbrecht from the Agricultural Research Council
Dr Christine Engelbrecht from the Agricultural Research Council presented the keynote lecture on climate dynamics, predicting that El Niños will double in frequency towards the end of the century.
The world will need nearly double the current food supply by 2050 to feed an ever-increasing world population. This is a mammoth, almost impossible task.

Building on knowledge

According to UFS Rector and Vice-Chancellor, Prof Francis Petersen, if we approach challenges such as these with scientific level-headedness, systematically build on knowledge and experience gained, and draw on similar inputs from other specialist fields, the seemingly impossible becomes possible.

“To what extent do we integrate our knowledge across sectors – within the university and outside the university; on the continent as well as globally?” he asked the 300-plus delegates, which included animal scientists, students, and various other role players in the livestock sector, at the 51st South African Society of Animal Science (SASAS) congress on the Bloemfontein Campus of the University of the Free State (UFS). 

Willingness to adapt to new strategies

The theme of this year’s congress was: Managing the ecological footprint of livestock through efficient production. The congress provided a platform for discussions on the impact of livestock production – bringing in elements of critical thinking, as well as the willingness to adopt new strategies. 

During the congress, workshops on topics such as silage, predation management, intensive sheep production, prickly-pear utilisation, and animal welfare provided delegates with the opportunity to discuss challenges faced by the South African livestock producer.

Dr Christine Engelbrecht (Meteorology) from the Agricultural Research Council presented the first keynote address, focusing on climate dynamics. 

“We have high-impact weather systems across Southern Africa. It is projected that strong El Niños are to double in frequency towards the end of the 21st century,” said Dr Engelbrecht. 

She further predicted temperature increases of between 4 and 7 degrees Celsius in the interior before the end of the century. Over the Free State, Northern Cape, and North-West Province, we can expect shorter frost seasons, significant increases in maximum temperatures for both summer and winter, as well as more frequent El Niño-induced droughts. 

Ecological footprint of food

Improved production outputs need to be achieved by using less land, water, and available energy, while ensuring that the degradation and pollution of natural resources are limited. A scientific approach would be a viable option to improve the efficiency of livestock production.

SASAS President, Prof Este van Marle-Köster from the University of Pretoria, pointed out that all food had an ecological impact.

Dr Frikkie Maré, Head of the Department of Agricultural Economics at the UFS, presented a keynote lecture on managing the footprint of beef through efficient production. Comparing the water footprint of different cattle breeds, his question was what could be done to reduce this. 

Animal welfare was introduced to the congress for the first time. Prof Cathy Dwyer from Scotland’s Rural College presented a session on, ‘Can animal welfare contribute to improved production efficiency?’

The oldest conception of animal welfare is the five freedoms adapted to the five welfare needs of animals, namely a suitable environment, a suitable diet, exhibiting normal behaviour patterns, being with or being apart from other animals, and protection from pain, injury, suffering, and disease. Studies demonstrate that animal welfare can be an important and effective part of production efficiency, and that animal welfare should be seen as an integral component of improving the sustainability of livestock. 

Prof HO de Waal from the Predation Management Centre at the UFS presented a session on the impact of predation on livestock production, with the tile: The need for coordinated predation management in South Africa – quo vadis? He said: “The current approach to predation management is fragmented and uncoordinated. Solutions for the management of human-wildlife conflict require a South African institutional memory. Most of the information on predation and the hunting of predators is held by specialist predator hunters and farmers. In a system of coordinated predation management, farmers and government are equal partners, each with specific responsibilities.”

The 2019 SASAS Congress
The 2019 SASAS Congress
Delegates at 2019 SASAS Congress
Delegates at 2019 SASAS Congress
Dr Frike Mare
Dr Frike Mare
Delegates at the SASA Congress
Delegates at the SASA Congress
Cheri-Lynn Steyn recieves Merit Award
Cheri-Lynn Steyn recieves Merit Award
Prof Norman Malwashe
Prof Norman Malwashe
Prof HO de Waal
Prof HO de Waal
Dr Francois Deacon
Dr Francois Deacon

News Archive

Eye tracker device a first in Africa
2013-07-31

 

 31 July 2013

Keeping an eye on empowerment

"If we can see what you see, we can think what you think."

Eye-tracking used to be one of those fabulous science-fiction inventions, along with Superman-like bionic ability. Could you really use the movement of your eyes to read people's minds? Or drive your car? Or transfix your enemy with a laser-beam?

Well, actually, yes, you can (apart, perhaps, from the laser beam… ). An eye tracker is not something from science fiction; it actually exists, and is widely used around the world for a number of purposes.

Simply put, an eye tracker is a device for measuring eye positions and eye movement. Its most obvious use is in marketing, to find out what people are looking at (when they see an advertisement, for instance, or when they are wandering along a supermarket aisle). The eye tracker measures where people look first, what attracts their attention, and what they look at the longest. It is used extensively in developed countries to predict consumer behaviour, based on what – literally – catches the eye.

On a more serious level, psychologists, therapists and educators can also use this device for a number of applications, such as analysis and education. And – most excitingly – eye tracking can be used by disabled people to use a computer and thereby operate a number of devices and machines. Impaired or disabled people can use eye tracking to get a whole new lease on life.

In South Africa and other developing countries, however, eye tracking is not widely used. Even though off-the-shelf webcams and open-source software can be obtained extremely cheaply, they are complex to use and the quality cannot be guaranteed. Specialist high-quality eye-tracking devices have to be imported, and they are extremely expensive – or rather – they used to be. Not anymore.

The Department of Computer Science and Informatics (CSI) at the University of the Free State has succeeded in developing a high-quality eye tracker at a fraction of the cost of the imported devices. Along with the hardware, the department has also developed specialised software for a number of applications. These would be useful for graphic designers, marketers, analysts, cognitive psychologists, language specialists, ophthalmologists, radiographers, occupational and speech therapists, and people with disabilities. In the not-too-distant future, even fleet owners and drivers would be able to use this technology.

"The research team at CSI has many years of eye-tracking experience," says team leader Prof Pieter Blignaut, "both with the technical aspect as well as the practical aspect. We also provide a multi-dimensional service to clients that includes the equipment, training and support. We even provide feedback to users.

"We have a basic desktop model available that can be used for research, and can be adapted so that people can interact with a computer. It will be possible in future to design a device that would be able to operate a wheelchair. We are working on a model incorporated into a pair of glasses which will provide gaze analysis for people in their natural surroundings, for instance when driving a vehicle.

"Up till now, the imported models have been too expensive," he continues. "But with our system, the technology is now within reach for anyone who needs it. This could lead to economic expansion and job creation."

The University of the Free State is the first manufacturer of eye-tracking devices in Africa, and Blignaut hopes that the project will contribute to nation-building and empowerment.

"The biggest advantage is that we now have a local manufacturer providing a quality product with local training and support."

In an eye-tracking device, a tiny infra-red light shines on the eye and causes a reflection which is picked up by a high-resolution camera. Every eye movement causes a change in the reflection, which is then mapped. Infra-red light is not harmful to the eye and is not even noticed. Eye movement is then completely natural.

Based on eye movements, a researcher can study cognitive patterns, driver behaviour, attention spans, even thinking patterns. A disabled person could use their eye-movements to interact with a computer, with future technology (still in development) that would enable that computer to control a wheelchair or operate machinery.

The UFS recently initiated the foundation of an eye-tracking interest group for South Africa (ETSA) and sponsor a biennial-eye tracking conference. Their website can be found at www.eyetrackingsa.co.za.

“Eye tracking is an amazing tool for empowerment and development in Africa, “ says Blignaut, “but it is not used as much as it should be, because it is seen as too expensive. We are trying to bring this technology within the reach of anyone and everyone who needs it.”

Issued by: Lacea Loader
Director: Strategic Communication

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