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25 July 2022 | Story Lunga Luthuli

From an early age, many have been taught that strangers are not only a danger to the individual, but to the communities too.

A StrangerKind (ASK), an organisation hosting unconventional conversations in communities on topics and responding to questions that many may not have the opportunity to ask, has partnered with the University of the Free State to host the talks that aims to promote curiosity, diversity, and social cohesion.

As part of the ASKcampus – a first to be hosted at any university in the country – participants will have an opportunity to talk to a stranger in a safe setting and ask any question that comes to mind, without any judgement.

Michelle Nöthling, Assistant Researcher in Kovsie Support Services, said: “The ASK event is an opportunity for participants to pick a topic from a list that sparks curiosity and book an available 45-minute time slot. During your session, you sit down to a one-on-one conversation with a stranger who will briefly introduce themselves and their topic. They will then share their personal life experience on that topic with you.”

The event, which will be launched at the Thakaneng Bridge, Bloemfontein Campus, on 28 July 2022, is open to both UFS staff and students.

“During the individual sessions, participants may ask the strangers anything about the chosen topic. We even encourage you to ask those questions that you might otherwise have been too shy, or felt were too ignorant, to ask. What is more, is that the strangers you will meet will be fellow UFS staff and students. But you will not know who your stranger is until you sit down with them,” said Michelle.

Individuals who want to know more about becoming a UFS stranger are encouraged to visit the organisation’s YouTube channel or register to attend training and become a ‘stranger’.

Be curious. Be brave. Talk to strangers.

Launch details:
Date
: 28 July 2022
Time
: 10:00-14:00
Venue
: Thakaneng Bridge, Bloemfontein Campus

News Archive

Research helps farmers save with irrigation
2017-02-15

Description: Irrigation research Tags: Irrigation research

Marcill Venter, lecturer in the Department of
Agricultural Economics at the University of the
Free State, has developed the mathematical
programming system, Soil Water Irrigation
Planning and Energy Management in order to
determine irrigation pump hours.
Photo: Rulanzen Martin

Her advice to farmers is that they should make sure they are aware of the total cost (investment and operating costs) of an irrigation system. In most cases the investment cost is low, but the operating cost over the lifetime of the system is high.

“It is very important to have a look at the total cost and to install the most economic system,” says Marcill Venter, lecturer at the University of the Free State (UFS), who has done research on the economic sustainability of water-pipe systems.

Irrigation systems important components for farming
This research comes at a time when many farmers are relying on their irrigation systems due to persistent drought and low rainfall during 2016. South Africa has also experienced an abnormal increase in electricity tariffs in recent years. Due to tariff increases which threaten the future profitability of irrigation producers, the Water Research Commission (WRC) has launched and financed a project on the sustainable management of irrigation farming systems. “I had the opportunity to work on the project as a researcher,” says Venter.

The heart of every irrigation system is the water pipes that bring life to crops and livestock, and this is what Venter’s research is about. “Water pipes are part of the whole design of irrigation systems. The design of the system impact certain factors which determine the investment and operating costs,” she says.

Mathematical system to help farmers
Venter and Professor Bennie Grové, also from the Department of Agricultural Economics at the UFS, designed the Soil Water Irrigation Planning and Energy Management (SWIP-E) programming model as part of the WRC’s project, as well as for her master’s degree. “The model determines irrigation pump hours through a daily groundwater budget, while also taking into account the time-of-use electricity tariff structure and change in kilowatt requirements arising from the main-line design,” says Venter. The model is a non-linear programming model programmed in General Algebraic Modeling System (GAMS).

Design of irrigation system important for sustainability

The main outcome of the study is that the time-of-use electricity tariff structure (Ruraflex) is always more profitable than the flat-rate structure (Landrate). The interaction between the management and design of a system is crucial, as it determines the investment and operating costs. Irrigation designers should take the investment and operating cost of a system into account during the design process. The standards set by the South African Irrigation Institute (SAII) should also be controlled and revised.

Water-pipe thickness plays major role in cost cuts
There is interaction between water-pipe thickness, investment and operating costs. When thinner water pipes are installed, it increases the friction in the system as well as the kilowatt usage. A high kilowatt increases the operating cost, but the use of thinner water pipes lowers the investment cost. Thicker water pipes therefore lower the friction and the kilowatt requirements, which leads to lower operating costs, but thicker pipes have a higher investment cost. “It is thus crucial to look at the total cost (operating and investment cost) when investing in a new system. Farmers should invest in the system with the lowest total cost,” says Venter.

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