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22 March 2019 | Story Rulanzen Martin | Photo Stephen Collett
Prof Johann Rossouw Inaugural lecture
Prof Heidi Hudson, Dean of the Faculty of the Humanities; Prof Fani de Beer, Prof Rossouw’s mentor; Prof Johann Rossouw; and Dr Engela van Staden, Vice-Rector: Academic.

For Prof Johann Rossouw from the Department of Philosophy, the Naval Hill Planetarium – a digital planetarium on a hill in the centre of a modern city, was the perfect place to deliver his inaugural lecture titled, The soul of the academy.

The message of his inaugural lecture was on “the form adopted by the contemporary university, which is so focused on the quantitative that the qualitative is neglected. The focus on training is so strong that the university no longer pays attention to the education of students”.

Prof Rossouw referred to the soul of the academy as the highest in humanity, especially the part which cannot be counted. He also referred to the words of Blaise Pascal in the 17th century: “The heart has its reasons of which reason knows nothing”.

“Do we understand any of this in the contemporary university? And do we still remember the earliest origins from which the academy originated; that Philosophy is the mother discipline of all other disciplines, and how all contemporary disciplines form part of a bigger, coherent entity?” he asked.

The inaugural lecture took place on 28 February 2019. Prof Rossouw has a C2-rating from the National Research Foundation, and it is thanks to him, among other things, that the Department of Philosophy is the only South African Philosophy department with modernity studies as its main focus.

At the end of 2018, he was promoted to Professor of Philosophy at the University of the Free State (UFS), and currently he serves as acting Head of Department. “Due to Prof Rossouw’s involvement, among other things, research on African philosophy, critical theory, postcolonial thinking, and tradition and modernity is conducted in the department,” Prof Heidi Hudson (Dean: the Humanities) said.

Prof Rossouw started his formal training in Philosophy at the age of 12, and in 1991 he obtained a BA degree majoring in Philosophy and Psychology at the University of Pretoria, with distinction. He obtained his MA degree, a critical study of apartheid on the basis of Michel Foucault’s thinking, at Unisa in 1998. In 2002, he obtained his DEA in Philosophy at the University of Lyon 3 under the leadership of Régis Debray, and in 2013 his PHD on the theological trail in Bernard Stiegler’s thinking at Monsh University (Melbourne), under Michael Janover.

In 2016, he won a prize from the South African Academy for Science and Culture for one of the best Afrikaans humanity articles published in 2015.

 

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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