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05 September 2023 | Story Leonie Bolleurs | Photo Supplied
Prof Lesley Green
Prof Lesley Green was announced the winner of the 2023 ASSAf Humanities Book Award in the category ‘Established Researcher’. She delivered a lecture on her book: Rock. Water. Life: Ecology and Humanities for a Decolonial South Africa.

A group of more than 100 academics and students from universities across South Africa and abroad attended the virtual lecture by Prof Lesley Green, winner of the 2023 ASSAf Humanities Book Award in the category ‘Established Researcher’, who discussed her cross-cutting book, titled: Rock. Water. Life: Ecology and Humanities for a Decolonial South Africa. 

The lecture is part of a series focused on the Humanities Book Awards, offering award recipients a platform to discuss the motivation behind their books, the societal impact of their work, and the personal influences that shaped their text. Prof Reddy said that academics and students can anticipate a series of humanities book award lectures in the coming months. 

Prof Vasu Reddy, Deputy Vice-Chancellor: Research and Internationalisation at the University of the Free State (UFS), member of the Academy of Science of South Africa (ASSAf), and member of the Book Award adjudication panel, facilitated the recent (29 August 2023) online 2023 ASSAf Humanities Book Award Lecture. 

Prof Green, Professor of Anthropology and the Director of Environmental Humanities South (EHS) at the University of Cape Town, was announced the winner of the 2023 ASSAf Humanities Book Award in the category ‘Established Researcher’, for which ASSAf received 31 nominations. She received the award at the end of March this year during a ceremony at the Vineyard Hotel in Cape Town.

The first ASSAf Book Prize was awarded in 2017, and since then ASSAf has conferred the award on an individual every two years to recognise and celebrate the significance and impact of well-written scholarly writings on human knowledge and intellectual efforts in South Africa. 

Prof Reddy characterised Prof Green's specific work as an outstanding book that makes a formidable contribution to the field.

Justice-based environmental sciences 

Prof Green’s research centres on justice-based environmental sciences in South Africa, with a particular focus on the relationship between knowledge and democracy in the Global South – a central theme in her award-winning text.

In the three parts of her book, ‘Past Present’, ‘Present Futures’, and ‘Futures Imperfect’, Prof Green explores the interwoven nature of the past, present, and future. Within these three parts, she delves into the fascinating array of identity markers, inequality, racism, colonialism, and environmental destruction in South Africa. 

Prof Reddy noted that the text asserts a need for environmental research and governance to evolve, contributing to addressing South Africa’s deep history of racial oppression and environmental exploitation. “The book also offers an in-depth engagement of environmental conflict, shedding light on matters often overshadowed by daily concerns in contemporary South Africa,” he added. 

The book, linking the humanities and social sciences with the natural sciences and applied sciences, touched on an array of important topics, including the history of contested water access in Cape Town, struggles over fracking in the Karoo, the call for the decolonisation of science (#ScienceMustFall), land restitution versus the politics of soil, contests over baboon management, and the consequences of sending sewage to urban oceans. 

Prof Green has observed the landscape of environmentalism for a couple of years and noticed a series of struggles. “Typically, these conflicts were being presented in highly polemic ways, often showcasing tremendous tension between academic environmentalism and activists on the ground. I noticed recurring patterns – what was being presented as the preferred form of environmentalism was not something I could support. For example, the frack-free Karoo campaign. It left me quite uncomfortable due to the erasure of Khoi and San presence in the Karoo,” she added. 

“So, what kind of environmentalism could I get behind? Questions around a just environmental governance begin to arise for me.”

Property, #ScienceMustFall, and black environmentalism 

During the discussion, Prof Green shared particular images from each section of her book that caused her to pause and reconsider her stance on the type of environmentalism she could support.

“We inherited a way of thinking about the world that was separated from nature and society. We have challenged that division of nature and society in respect of race and racism and sex and sexism, but we have not brought that critique to bear on how we relate to the world. Somehow, under neo-liberal governance, we find ourselves in this space where economics and finance are seen as the hero that will bring it all together. 

These comments merely scratched the surface of Prof Green’s insights into her book – which Prof John Higgins, Emeritus Professor who formerly held the Arderne Chair in Literature at the University of Cape Town (now Senior Research Scholar at UCT), referred to in his closing remarks as a rich description of a magnificent book. According to him, this scholarly book not only circulates and makes knowledge public, but also provides an opportunity to question that very knowledge. 

This marked the first instance where ASSAf combined book selection with a discussion on the chosen book, underscoring the value of scholarly literature.

- In the Emerging Researcher category, Dr Rick de Villiers from the UFS Department of English was a shortlisted candidate for his book, titled: Eliot and Beckett’s Low Modernism: Humility and Humiliation. 

News Archive

Fight against Ebola virus requires more research
2014-10-22

 

Dr Abdon Atangana
Photo: Ifa Tshishonge
Dr Abdon Atangana, a postdoctoral researcher in the Institute for Groundwater Studies at the University of the Free State (UFS), wrote an article related to the Ebola virus: Modelling the Ebola haemorrhagic fever with the beta-derivative: Deathly infection disease in West African countries.

“The filoviruses belong to a virus family named filoviridae. This virus can cause unembellished haemorrhagic fever in humans and nonhuman monkeys. In literature, only two members of this virus family have been mentioned, namely the Marburg virus and the Ebola virus. However, so far only five species of the Ebola virus have been identified, including:  Ivory Coast, Sudan, Zaire, Reston and Bundibugyo.

“Among these families, the Ebola virus is the only member of the Zaire Ebola virus species and also the most dangerous, being responsible for the largest number of outbreaks.

“Ebola is an unusual, but fatal virus that causes bleeding inside and outside the body. As the virus spreads through the body, it damages the immune system and organs. Ultimately, it causes the blood-clotting levels in cells to drop. This leads to severe, uncontrollable bleeding.

Since all physical problems can be modelled via mathematical equation, Dr Atangana aimed in his research (the paper was published in BioMed Research International with impact factor 2.701) to analyse the spread of this deadly disease using mathematical equations. We shall propose a model underpinning the spread of this disease in a given Sub-Saharan African country,” he said.

The mathematical equations are used to predict the future behaviour of the disease, especially the spread of the disease among the targeted population. These mathematical equations are called differential equation and are only using the concept of rate of change over time.

However, there is several definitions for derivative, and the choice of the derivative used for such a model is very important, because the more accurate the model, the better results will be obtained.  The classical derivative describes the change of rate, but it is an approximation of the real velocity of the object under study. The beta derivative is the modification of the classical derivative that takes into account the time scale and also has a new parameter that can be considered as the fractional order.  

“I have used the beta derivative to model the spread of the fatal disease called Ebola, which has killed many people in the West African countries, including Nigeria, Sierra Leone, Guinea and Liberia, since December 2013,” he said.

The constructed mathematical equations were called Atangana’s Beta Ebola System of Equations (ABESE). “We did the investigation of the stable endemic points and presented the Eigen-Values using the Jacobian method. The homotopy decomposition method was used to solve the resulted system of equations. The convergence of the method was presented and some numerical simulations were done for different values of beta.

“The simulations showed that our model is more realistic for all betas less than 0.5.  The model revealed that, if there were no recovery precaution for a given population in a West African country, the entire population of that country would all die in a very short period of time, even if the total number of the infected population is very small.  In simple terms, the prediction revealed a fast spread of the virus among the targeted population. These results can be used to educate and inform people about the rapid spread of the deadly disease,” he said.

The spread of Ebola among people only occurs through direct contact with the blood or body fluids of a person after symptoms have developed. Body fluid that may contain the Ebola virus includes saliva, mucus, vomit, faeces, sweat, tears, breast milk, urine and semen. Entry points include the nose, mouth, eyes, open wounds, cuts and abrasions. Note should be taken that contact with objects contaminated by the virus, particularly needles and syringes, may also transmit the infection.

“Based on the predictions in this paper, we are calling on more research regarding this disease; in particular, we are calling on researchers to pay attention to finding an efficient cure or more effective prevention, to reduce the risk of contamination,” Dr Atangana said.


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