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06 July 2018 Photo Charl Devenish and Johan Roux
Prestigious academic medals awarded to outstanding UFS students
UFS Dean medal recipients top left; Sophia Pitcher, top right; HJ Prinsloo, centre; Lesley Jean Wright, bottom right; Mashudu Mathobo and Senate’s medal recipient bottom left; Enrico Scheltema at the 2018 June Graduation ceremonies.

During the recent June graduation ceremonies at the University of the Free State (UFS), the winter chill subsided with some heart-warming academic achievements in postgraduate studies. Four students were awarded a Dean’s medal for the best master’s degree in their respective faculties, and the overall best achiever received a Senate’s medal. The faculties in the limelight were Education, the Humanities, Theology and Religion, and Natural and Agricultural Sciences boasting both a Dean’s and Senate’s medal. 

Biblical analysis and interpretation
Interestingly, the Bible served as subject matter for two master’s degrees from two different faculties – each receiving a Dean’s medal. HJ Prinsloo, under the guidance of his study leader, Prof Francois Tolmie from the Faculty of Theology and Religion, took a closer look at Paul’s letter to the Galatians. “I hope that my studies made me become a critical-thinking theologian who can make a contribution to the interpretation of Paul’s letters,” Prinsloo said. He would like to continue his research by doing a PhD. “My academic interest is the rhetoric of the undisputed Pauline letters in the New Testament.” He gave all the glory and honour to God for his achievement. 

A few blocks down in the Faculty of the Humanities, Sophia Lynn Pitcher sunk her teeth into the Masoretic cantillation accents of the Hebrew Bible a complex medieval notation for recording the chanting and recitation of the Old Testament text. “Her prosodic model is ground-breaking in that it provides the key to unlocking the intonational patterns of the Old Testament, which will have significant implications for biblical interpretation and exegesis for Bible translators and students,” said her study leader, Prof Jacobus Naude, and co-study leader, Prof Cynthia Miller-Naude. “The study of the Masoretic accents has been largely ignored by Hebrew and biblical scholars,” they elaborated. “Her research demonstrates that it is possible to understand the Old Testament in light of the sounds of its sentences, as well as the words on the written page.”

Class time
In her striking polka-dot, ankle-high laced-up sneakers, Lesley Jean Wright not only earned her master’s degree with specialisation in Psychology of Education, but also the Dean’s Medal in the Faculty of Education. Although she has always been an achiever, it was the first time that she received an award of this calibre at university level. “My research is part of the way in which I have chosen to change the world in which I live,” she explains her passion and drive. “The best part of my studies was learning in so much more depth about an area of which I knew very little in academic terms.” She completed her research titled, A Collaborative Inquiry Towards Understanding the Experiences of ‘Out’ Lesbian and Gay Teachers in Gauteng Schools, under the guidance of her supervisor and mentor, Prof Dennis Francis from Stellenbosch University

Maths minds

The Faculty of Natural and Agricultural Sciences had a proud moment when two of their students received sought-after awards. “Modelling real-world problems with mathematical tools is perhaps one of the most difficult exercises in research,” said Prof Abdon Atangana about the research of his student, Mashudu Mathobo, who received a Dean’s medal. Prof Atangana commended Mathobo’s passion, devotion, and dedication to his studies. “He was at my door every morning to discuss the previous night’s work.” Mathobo revised Theis’s mathematical model portraying the movement of groundwater to find a more accurate solution. He came up with an exact groundwater flow equation for a confined aquifer, taking all Theis’s assumptions into account, as well as high-order terms that Theis removed from his equation. 

Also using mathematics to solve problems of a different kind, was Actuarial Science student and Senate’s medal recipient, Enrico Scheltema. Currently in his honours year, he received this noteworthy award for his undergraduate studies. He is driven by his love for problem-solving and is looking forward to entering the workplace next year. “It is an interesting feeling to be awarded for something you did some time ago,” Scheltema said. While he is yet to fully appreciate the magnificence of his achievement, the faculty and university salutes the young man for his brilliance and dedication.

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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