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An empirical analysis of the asset price monetary policy transmission channel in South Africa

  • Authors: Du Preez, Wilhelmus Petrus
  • Date: 2021-10
  • Subjects: Monetary policy South Africa , Banks and banking, Central South Africa , Transmission mechanism (Monetary policy) South Africa , Capital assets pricing model , Securities South Africa , Stocks Prices South Africa , Repurchase agreements South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/190318 , vital:44983
  • Description: The asset pricing channel of monetary policy transmission breeds an interesting study. There has been an ongoing debate to determine whether monetary policy committees should directly influence the asset pricing channel through changes in the central bank control interest rate or whether monetary policy committees should refrain from targeting the asset pricing channel to meet their policy objectives. The study aims to critically analysis the asset pricing channel, firstly on a global context to set the scene and then to critically focus on the study performed by Muroyiwa et al. (2017) who conducted a study on the South African monetary policy and its interdependence on the stock market through utilisation of an SVAR model. It was concluded that monetary policy does significantly influence stock prices. The purpose of this study is to build on the results which have been formed by Muroyiwa et al. (2017) and to expand on the period under analysis which encapsulates 1999:01 to 2007:12 in order to conclude whether there are conflicting conclusions or conclusions which build on what has already been done. The results from the research shows that when the monetary policy committee decides to influence changes in the repo rate, the repo rate will have a direct effect on the asset markets, the indexes that were used to represent the asset market are the all share index, industrial 15 index and the financial 15 index. Furthermore. The study which has expanded the period under analysis has supplemented and built on the results provided by Muroyiwa et al. (2017). , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2021
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  • Date Issued: 2021-10

An evolutionary study of legless skinks’ (Acontias Cuvier, 1817) head and vertebrae morphology

  • Authors: Evlambiou, Anthony Andreas
  • Date: 2021-10
  • Subjects: Skinks South Africa , Acontias South Africa , Typhlosaurus South Africa , Acontias Morphology , Acontias Phylogeny , Acontias Evolution , Vertebrae , Skull Growth , Evolutionary developmental biology
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/190690 , vital:45018
  • Description: Environmental factors and/or processes can produce differences in general shape between individuals or particular parts of individuals. Examples of these biological processes may include ontogenetic development, adaptation to local geographic factors, or long-term evolutionary diversification. An organism is not likely to be able to optimise a single structure for multiple purposes and so trade-offs are likely to occur. An example of such a structure is the cranium, as it can be used for multiple activities such as defensive and sexual behaviour, locomotion, prey capture, and ingestion. Morphological characteristics have historically been used in the description of species. Genetic analyses have gained popularity as species delineation techniques and have been particularly useful in identifying cryptic species, especially among morphological conserved species like legless skinks of the subfamily Acontinae (e.g. Acontias Cuvier, 1817 and Typhlosaurus Weigmann, 1834). However, completely doing away with morphological techniques during species descriptions is not the best option. Therefore, novel methods to identify species, especially those with similar body plans, are needed. In this dissertation, we explore the links between head shape and vertebral number to environmental pressures to determine whether the evolutionary process is driven by environmental pressures (soil or biome) or is retained through ancestry. A novel species/clade delineation linked to vertebral number is also investigated. Head shape was expected to have a close link to the environment and the number of vertebrae was expected to have a closer link to ancestry. The first chapter investigates the drivers behind Acontias head shape evolution using geometric morphometric techniques. We found that environmental pressures did affect the evolution of head shape especially in the “soil” and “biome” categories but further investigation is advised. The second chapter explores the viability of using vertebral counts as a novel method for species and/or clade delineation in Acontias and to determine whether vertebral number can be linked to the environment. Delineating species based on vertebral count is likely not an option, however, delineating clades proved to show promising results. A link between vertebral count and environment was found in Acontias with larger bodied species occurring in different environments to smaller body species. In conclusion, the genus Acontias is difficult to delineate morphologically. Genetic sequence analyses can indicate differences and delineate the species. Even though there were differences in morphology based on environmental factors, it is not sufficient to delineate this subfamily alone. Further research is advised and this dissertation provides a good basis to work with. , Thesis (MSc) -- Faculty of Science, Zoology and Entomology, 2021
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  • Date Issued: 2021-10

Assessing South African medical interns’ experience and confidence in managing obstetric emergencies

  • Date: 2021-10
  • Subjects: Interns (Medicine) Obstetrical emergencies Article
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/11260/7629 , vital:54737 , ("https://10.7196/SAMJ.2021.v111i11.15897")
  • Description: Background. Medical doctors in South Africa (SA) are required to complete a 2-year internship at training hospitals, including a 4-month rotation in obstetrics and gynaecology. Following this, doctors are allocated to community service posts, many of which are at district- and primary-level facilities where supervision is limited. Recent triennial Saving Mothers reports identify district hospitals (DHs) as the second leading site for maternal deaths of all causes, the leading site for maternal deaths secondary to obstetric haemorrhage, and the most likely site for the lack of a skilled doctor to be identified as a factor in deaths associated with caesarean delivery. Objectives. To describe the self-perceived readiness of medical interns completing their training to manage obstetric emergencies, based on the Essential Steps in the Management of Obstetric Emergencies modules in the Health Professions Council of South Africa’s internship logbook. Methods. This cross-sectional descriptive study assessed medical interns in the last 3 months of their training, using a self-administered online questionnaire. Data collection took place between October and December 2019. Results. Cluster sampling of interns at training facilities throughout SA resulted in a total of 182 respondents from 17 hospitals in seven provinces in the country, with an overall response rate of 34.1%. Most interns had experience with and confidence in the management of miscarriage and hypertension in pregnancy. However, gaps in labour ward management, pregnancy-related sepsis and surgical skills were identified. Only 42.3% of respondents were confident in their ability to diagnose obstructed labour, 26.3% had performed an assisted delivery, 39.0% were confident in their knowledge of the indications for and contraindications to assisted deliveries, and 35.7% had been involved in the delivery of a baby with shoulder dystocia. Regarding pregnancy-related sepsis, 54.4% had experience with managing a wound abscess and 29.7% were confident managing puerperal endometritis. While 78.0% felt confident to perform a caesarean section (CS), only 28.6% had performed uterine compression suture for uterine atony at CS. Additionally, there was a statistically significant variation in scores between training hospitals. Conclusions. An incongruity exists between the shortcomings in DH obstetric services, the prioritisation of placement of community service doctors at primary healthcare facilities and DHs, and the self-perceived readiness of medical interns completing their training to manage obstetric emergencies safely. This situation highlights the importance of clinical support for junior doctors at DHs and standardisation of intern training at accredited facilities across SA.
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  • Date Issued: 2021-10

Assessing the local awareness and perception of invasive alien plants: A case study of Port St Johns Local Municipality, Eastern Cape Province, South Africa

  • Authors: Somkala, Avela Abongile
  • Date: 2021-10
  • Subjects: Alien plants , Invasive plants
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10353/22600 , vital:52595
  • Description: Invasive alien plants (IAPs) are introduced species that constitute a self-sustaining population, consistently producing offspring in large numbers and at considerable distances from the parent plants with the potential to spread over a large area. Species invasions are one of the main conservation threats today and have caused modification of ecosystems, particularly in coastal areas. Therefore, Port St Johns Local Municipality (PSJ LM) was an appropriate study site to evaluate the local awareness and perceptions of IAPs. The study investigated the local community’s perceptions of invasive alien plants' uses and ecological impacts. Information about the local awareness and perceptions of invasive alien plant species in PSJ LM was gathered through semi-structured interviews, observation and guided field walks with 120 participants between February and April 2021. The participants included 30 people working on the alien plant eradication project in PSJ LM (Wards 1, 2 and 3) and 90 randomly selected community members. The data collected were entered in Microsoft Excel 2016 programme and analyzed for descriptive statistical patterns using Statistical Package for Social Studies (SPSS) version 22.0. Biological invasion by IAPs was ubiquitously perceived, with participants working on invasive alien plant eradication project in the area exhibiting more scientifically based knowledge on IAPs than ordinary community members. Invasive alien plants in the area appear to have adverse environmental and socio-economic impacts, as the participants are not benefiting from these plant species. Similarly, costs of eradicating these species were also acknowledged. The ability of local community members to identify IAPs is vital in effective management of the spread of these species. A total of seven invasive IAPs were recorded. Evaluating the perceptions of local people towards IAPs provides valuable insights for development planning and future management programmes focusing on biological invasions. The study will provide a basis for an enabling policy and institutional environment that provides a coherent framework for the sustainable management of IAPs in the Eastern Cape Province. , Thesis (MPhil) -- Faculty of Science and Agriculture, 2021
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  • Date Issued: 2021-10

Barriers to participation in sports among urban adolescents at an International School in Cape Town, South Africa

  • Authors: Klaasen, Robyn Jade
  • Date: 2021-10
  • Subjects: Urban teenagers -- Sports , Sports administration
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10353/22155 , vital:51991
  • Description: The benefits of participating in sport have been well documented and great emphasis has been placed on the role that it plays in the development of character and social skills, apart from physical and psychological benefits. Sport represents an optimal means of enabling children and adolescents to meet their daily requirements for physical activity to maintain health. Conversely, despite all of the widely acknowledged benefits, participation in sport among children and adolescents continues to decline throughout the world. Although a great deal of research has been conducted to identify barriers to participation in sport, most of it has concerned poor, rural, disadvantaged, or other marginalised groups. As a consequence, a large proportion of the research has attributed low rates of participation in sport to practical barriers, which usually take the forms of either logistical problems or a lack of resources. The aim of this study was to identify the barriers to participation in sport among adolescents in an affluent, urban setting, at an international school in Cape Town, South Africa. The Barriers to Sport Participation Questionnaire was used to identify the social, personal, and practical barriers that affected 107 adolescents who were enrolled in the school. The data was analysed by means of the SPSS (IBM, Version 27) software package and seven significant barriers were identified. Fear of academic failure, environmental constraints, and lack of interest were identified as the primary barriers, thereby emphasising the significant influence of personal barriers, rather than practical ones. It was also found that the influence of particular barriers was greater on females than their male counterparts and that the respondents who either did not participate in sport themselves or were from households in which other members did not do so were more adversely affected by some barriers than the others. Significant correlations were found between some grades and certain barriers, the most notable being those between respondents in Grades 7, 9, and 10 and the fear of academic failure barrier. In light of these findings, it could be concluded that the global decline in participation in sport among the youth is a complex problem and that particular barriers, which might not have been identified in previous research, could be particularly influential in affluent environments. As it is evident that as barriers can be specific to particular groups and settings, the optimal means of overcoming them is unlikely to be found through the adoption of a one-size-fitsall approach. Instead, further research and customised interventions are required. , Thesis (HMS) -- Faculty of Health Sciences, 2021
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  • Date Issued: 2021-10

Building the field component of a smart irrigation system: A detailed experience of a computer science graduate

  • Authors: Pipile, Yamnkelani Yonela
  • Date: 2021-10
  • Subjects: Irrigation efficiency Computer-aided design South Africa , Irrigation projects Computer-aided design South Africa , Internet of things , Machine-to-machine communications , Smart water grids South Africa , Raspberry Pi (Computer) , Arduino (Programmable controller) , ZigBee , MQTT (MQ Telemetry Transport) , MQTT-SN , XBee
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/191814 , vital:45167
  • Description: South Africa is a semi-arid area with an average annual rainfall of approximately 450mm, 60 per cent of which goes towards irrigation. Current irrigation systems generally apply water in a uniform manner across a field, which is both inefficient and can kill the plants. The Internet of Things (IoT), an emerging technology involving the utilization of sensors and actuators to build complex feedback systems, present an opportunity to build a smart irrigation solution. This research project illustrates the development of the field components of a water monitoring system using off the shelf and inexpensive components, exploring at the same time how easy or difficult it would be for a general Computer Science graduate to use hardware components and associated tools within the IoT area. The problem was initially broken down through a classical top-down process, in order to identify the components such as micro-computers, micro- controllers, sensors and network connections, that would be needed to build the solution. I then selected the Raspberry Pi 3, the Arduino Arduino Uno, the MH-Sensor-Series hygrometer, the MQTT messaging protocol, and the ZigBee communication protocol as implemented in the XBee S2C. Once the components were identified, the work followed a bottom-up approach: I studied the components in isolation and relative to each other, through a structured series of experiments, with each experiment addressing a specific component and examining how easy was to use the component. While each experiment allowed the author to acquire and deepen her understanding of each component, and progressively built a more sophisticated prototype, towards the complete solution. I found the vast majority of the identified components and tools to be easy to use, well documented, and most importantly, mature for consumption by our target user, until I encountered the MQTT-SN (MQTT-Sensor Network) implementation, not as mature as the rest. This resulted in us designing and implementing a light-weight, general ZigBee/MQTT gateway, named “yoGa” (Yonella's Gateway) from the author. At the end of the research, I was able to build the field components of a smart irrigation system using the selected tools, including the yoGa gateway, proving practically that a Computer Science graduate from a South African University can become productive in the emerging IoT area. , Thesis (MSc) -- Faculty of Science, Computer Science, 2021
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  • Date Issued: 2021-10

Coaches perspective on the positional demands of school boy (u18/u19) rugby players during a 70-minute match

  • Authors: Barnard, Devon Vernon
  • Date: 2021-10
  • Subjects: Rugby football coaches South Africa , Rugby Union football players South Africa , Rugby football injuries South Africa , School sports South Africa , School sports Coaching South Africa , School sports Physiological aspects
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/190089 , vital:44962
  • Description: INTRODUCTION: Rugby union has been one of the team sports that has grown over the last few years, and the margin between success and failure for teams has become narrower as the years have gone by. The game consists of players going through different movements such as sprints and/or collisions, that vary in intensity. The demands that face schoolboy rugby players are not well understood, and the lack of research in this area leads to a potential lack of understanding of the perceptions that coaches have about the demands that schoolboys are faced with during a match. OBJECTIVE: Therefore, the purpose of this study was to determine the perceptions that the schoolboy rugby coaches had surrounding the demands that their players are faced with during a 70-minute match. There were a few secondary purposes of the study, such as determining which school, government or private, had a better understanding or perception of the demands, as well as comparing strength and conditioning coaches’ perceptions to regular coaches’ perceptions. METHODS: This was a cross-sectional, descriptive study to determine the coach’s perceptions. These perceptions were collected through an online questionnaire, which consisted of ten sections and 74 questions. The questionnaire was piloted on a subject group with different types of experience. Coaches from the top 100 schools list were contacted through their school website. RESULTS: The questionnaire had a 72% response rate: 41 responses from 51 emails. The 41 responses consisted of 23 government schools and 18 private schools, which included 11 of the top 20 rugby schools in South Africa, with most responses coming from the Eastern Cape (41.5%). Results indicated that a government school’s coaches had significantly (p<0.05) more experience than private schools’ coaches, and that they had significantly (p<0.05) better academic qualifications than private schools. However, strength and conditioning coaches had significantly (p<0.01) better academic qualifications than coach, whereas coaches had significantly (p<0.01) better coaching qualifications than strength and conditioning coaches. CONCLUSION: “Experience has been shown to be a potential reason for what is described as a good coach”. This is also another potential reason why government schools are a dominant force in schoolboy rugby in South Africa. However, this is also coupled with better qualifications showing the dual importance of both experience and education. This study has shown that coaches, within a South African cohort, overall had good general perception of the demands of school level rugby matches. , Thesis (MSc) -- Faculty of Science, Human Kinetics and Ergonomics, 2021
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  • Date Issued: 2021-10

Consequences of citizens’ non-reporting of crime to the Police: A survey of Mthatha Policing Precinct, South Africa

  • Date: 2021-10
  • Subjects: Citizen crime reporting Victims of crimes surveys Article
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/11260/7962 , vital:57343 , ("https://iipccl.org/wp-content/uploads/2021/10/035.pdf")
  • Description: Whilst citizens are at liberty to decide whether or not to report a crime to the police, nonreporting of crime to the police may come with a heavy price. This study evaluates the consequences of non-reporting of crime to the police in South Africa’s Mthatha policing area. It comes against a backdrop of a rise in criminal activities in South Africa. A survey was conducted among households in selected residential areas of Mthatha, from where 120 respondents were selected through stratified random sampling technique. Data analysis was done using SPSS to reveal both descriptive and inferential statistics. From the analysis, continued engagement in criminal activities by perpetrators, resulting in absence of investigations was found to be the major impact of non-reporting of crime to the police. Findings also revealed that the victims bear the most implications of non-reporting of crime. Inability to identify crime hot spots, misallocation of policing resources and inability to determine crime trends and tendencies were also viewed as significant impacts of non-reporting of crime to the police. A factor analysis revealed officials’ inability to determine trends and tendencies that could inform policing strategies as the most significant component.
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  • Date Issued: 2021-10

Echogenic liposomes for ultrasound-triggered drug delivery

  • Authors: Izuchukwu, Ezekiel Charles
  • Date: 2021-10
  • Subjects: Liposomes , Drug delivery systems , Colon (Anatomy) Cancer Treatment , Transmission electron microscopy , Fourier transform infrared spectroscopy , Liquid chromatography , Echogenic liposomes , Ultrasound-triggered drug delivery
  • Language: English
  • Type: Masters theses , text
  • Identifier: http://hdl.handle.net/10962/188997 , vital:44805
  • Description: Colorectal cancer is one of common cancers worldwide. It is the third most diagnosed cancer and the second leading cause of death. The use of 5-fluorouracil (5-FU) alone or in a chemotherapy regime has been the effective treatment of colorectal cancer patients. The efficacy of 5-FU in colorectal cancer treatment is significantly limited by drug resistance, gastrointestinal, and bone marrow toxicity through high-level expression of thymidylate synthase, justifying a need to improve its therapeutic index. Liposomes are colloidal membranes comprising of one or more lipid bilayers enclosing an aqueous core. They have been used to improve the therapeutic index of many anti-cancer drugs by changing drug absorption, elongating biological half-life, reducing metabolism, and reducing toxicity to healthy tissues. Echogenic liposomes are specifically designed to respond to external triggering like ultrasound stimulation by entrapping a gas or an emulsion that can vaporize. A liposome's unique property is that it can entrap both hydrophobic and hydrophilic substances simultaneously in the lipid bilayer and the aqueous core, respectively. These stimuli-responsive liposomes can be triggered externally with ultrasound, to release the chemotherapeutic cargo only at the required site. This research aims to formulate echogenic liposomes encapsulating 5-FU for potential ultrasound triggered release (echogenic). Liposome formulations wereprepared with lipid composition of crude soybean lecithin and cholesterol by thin-filmhydration method and the drug was passively loaded in the formulation. The 5-FU loadedliposomes were evaluated by dynamic light scattering (DLS) for particle size, polydispersityindex, and zeta potential and transmission electron microscopy (TEM) for morphology.Encapsulated liposomal formulations were also evaluated using physicochemical techniquesincluding thermogravimetric analysis (TGA), differential scanning calorimetry (DSC),Fourier-transform infrared spectroscopy (FTIR), and X-ray diffraction (XRD). Theencapsulation efficiency and release kinetics were studied using a validated high-performanceliquid chromatography (HPLC) method. Echogenic properties were explored by entrapping abiocompatible gas (argon) at the same time as the drug (5-FU) using a pressure/freezemethodology. The liposomal formulations were typically spherical with a size of about 150 nmand encapsulation efficiency of 62%. Low-frequency ultrasound (20 kHz) was used to triggerthe drug release from the complete formulation at 10%, 15%, and 20% amplitude and exposuretime of 5 min and 10 min. The rate of drug release from the nano-carrier was a function of theultrasound amplitude and exposure time and reached a maximum of 65% release under theconditions investigated. The cumulative release was investigated, with and without theapplication of ultrasound. It was demonstrated that the application of ultrasound resulted in complete release (99%) after 12 h while this dropped to 70% without ultrasound. These results are encouraging for optimizing ultrasound parameters for triggered and controlled release of the 5-FU, for conditions such as the management of cancer where low-power ultrasound can be applied. , Thesis (MSc) -- Faculty of Science, Chemistry, 2021
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  • Date Issued: 2021-10

Ecological infrastructure importance for drought mitigation in rural South African catchments: the Cacadu Catchment case example

  • Authors: Xoxo, Beauten Sinetemba
  • Date: 2021-10
  • Subjects: Sustainable Development Goals , Water security South Africa , Remote sensing , Watershed restoration South Africa , Restoration ecology South Africa , Ecosystem services South Africa , SDG 15.3.1‎
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/191203 , vital:45070
  • Description: Water scarcity is recognised as one of the significant challenges facing many countries, including South Africa. The threat of water scarcity is exacerbated by the coupled impacts of climate and anthropogenic drivers. Ongoing droughts and continued land cover change and degradation influence the ability of catchments to partition rainwater runoff, thereby affecting streamflow returns. However, quantifying land degradation accurately remains a challenge. This thesis used the theoretical lens of investing in ecological infrastructure to improve the drought mitigation function in rural catchments. This theoretical framework allows for a social-ecological systems approach to understand and facilitate science-based strategies for promoting ecosystem recovery. Specifically, this study aimed to explore the role and benefit of ecological infrastructure for improving drought mitigation, and consequently, water security for rural communities. Thus, this study sought to assess the consequences of human actions to catchment health status using the 15th Sustainable Development Goal indicator for the proportion of degraded land over the total land area as a surrogate. Secondly, hydrological modelling was used to describe how different land covers influence catchment hydrology, which related to how ecological infrastructure enables drought risk-reduction for mitigation regulation. Finally, this study developed a spatial prioritisation plan for restoration to improve drought mitigation for four focal ecological infrastructure (EI) categories (i.e. wetlands, riparian margins, abandoned agricultural fields and grasslands). The focal EI categories were selected for their importance in delivering water-related ecosystem services when sustainably managed. Chapter 1 sets the scene (i.e. provides the study background) and Chapter 2 provides a review of the literature. In Chapter 3, the recently released global GIS toolbox (TRENDS.EARTH) was used for tracking land change and for assessing the SDG 15.3.1 degradation indicator of i.e. Cacadu catchment over 15 years at a 300 m resolution. The results showed a declining trend in biomass productivity within the Cacadu catchment led to moderate degradation, with 16.79% of the total landscape degraded, which was determined by the pugin using the one-out, all-out rule. The incidence of degradation was detected in middle reaches of the catchment (i.e. S10F-J), while some improvement was detected in upper reaches (S10A-C) and lower reaches (S10J). In Chapter 4, a GIS-based Analytic Hierarchical Process (AHP) based on community stakeholder priorities, open-access spatial datasets and expert opinions, was used to identify EI focal areas that are best suitable for restoration to increase the drought mitigation capacity of the Cacadu catchment. The collected datasets provided three broad criteria (ecosystem health, water provision and social benefit) for establishing the AHP model using 12 spatial attributes. Prioritisation results show that up to 89% of the Cacadu catchment is suitable for restoration to improve drought mitigation. Catchments S10B-D, and S10F, S10G and S10J were highly prioritised while S10A, S10E and S10H received low priority, due to improving environmental conditions and low hydrological potential. Areas that were prioritised with consideration for local livelihoods overlap the areas for drought mitigation and form a network of villages from the middle to lower catchment reaches. Prioritised restoration areas with a consideration of societal benefit made up 0.56% of wetlands, 4.27% of riparian margins, 92.06% of abandoned croplands, and 51.86% of grasslands. Chapter 5 reports on use of the Pitman groundwater model to help understand the influence of land modification on catchment hydrology, and highlight the role of restoration interventions. The Cacadu catchment is ungauged, therefore the neighbouring Indwe catchment was used for parameter transfer through a spatial regionalisation technique. Results suggest that degradation increases surface runoff and aggravates recharge reduction, thereby reducing streamflow during low flow periods. In areas where there is natural land cover recovery, the Pitman Model simulated similar dry season streamflow to the natural land cover. Combining the outcomes from the three assessments allowed the study to highlight the role and benefits of ecological infrastructure in terms of drought mitigation. Study findings were interpreted to make recommendations for the role and benefit of ecological infrastructure for drought mitigation at a landscape scale and tertiary catchment level, within the context of available management options. The results support the notion that multiple science data sources can promote investments in ecological infrastructure. However, better spatial and temporal resolution datasets at a national level are still needed to improve the accuracy of studies such as the one outlined in this thesis. The study recommends adopting better ecosystem protection approaches and collaborative governance at multiple levels to reduce the vulnerability of rural communities to drought impacts. , Thesis (MSc) -- Faculty of Science, Institute for Water Research, 2021
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  • Date Issued: 2021-10

Effects of elevated temperature, rainfall and soil nutrients on acacia mearnsii invasion

  • Authors: Kharivha, Tshililo
  • Date: 2021-10
  • Subjects: Acacia mearnsii , Acacia mearnsii Effect of high temperatures on South Africa , Acacia mearnsii Climatic factors South Africa , Plant invasions South Africa , Invasive plants , Climatic changes South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/189997 , vital:44954
  • Description: Climate change is associated with the risk of plant invasion hence a better understanding of the effects of elevated temperature, precipitation and soil nutrients on dominant invasive plants is needed for effective ecological planning. This study was set out to: (i) examine how elevated temperature (±2°C increase), (ii) high (above local average) and low (below local average) precipitation, (iii) elevated soil nutrient content (increase in soil N), and (iv) a combination of the above manipulations affects germination and growth of Acacia mearnsii, a dominant invasive plant in South Africa. The study further evaluated how the above-mentioned treatments affect soil chemical properties following A. mearnsii germination and growth. The above-mentioned specific objectives were tested under manipulated greenhouse conditions over six experimental months. The results indicated that the above-mentioned climate change scenarios have the potential to facilitate germination and growth of the invasive species A. mearnsii, and this is likely to proliferate its invasion in future. Results showed that seed germination was significantly high under all climate change manipulation treatments (˃50%) with highest seed germination recorded under high rainfall treatment (64%). Plant height was significantly higher under high temperature and high rainfall treatments throughout all the experimental months, though it was lowest under high nitrogen and combined treatment with high rainfall. The numbers of branches were high under higher temperature and low rainfall treatments than under high rainfall, high nitrogen and both combined treatments of low and high rainfall. Relative to the control, plants grown under climate change scenarios increased their root lengths, but this varied across different treatments. Total dry biomass was relatively high under high temperature treatment (0,7 g). Lower plant dry biomass was observed under low and high rainfall treatments (0,4 g), high nitrogen and combined treatments with both low and high rainfall treatments (0,1 g). Concerning the effects of climate change scenarios on soil chemical properties, soil pH levels were significantly higher after A. mearnsii germination and growth than before the experiment was setup. Soil resistivity was significantly higher in climate change treatments receiving nitrogen and combined treatments of low rainfall than other treatments and the soils before experiment. Soil total P was significantly higher in all the climate change treatments after A. mearnsii germination experiment than the before experiment soils. Soils receiving high temperature, high nitrogen, and combined treatment of low rainfall had significantly higher soil total N than other treatments and the before experiment soils. Soil total C was significantly higher in soils receiving high temperature, high nitrogen, and combined treatment of low rainfall after A. mearnsii germination than other treatments and before experiment soils. The findings suggest that future climate change scenarios of increased temperature and rainfall with soil nutrients could considerably enhance growth and germination success of the invasive plant A. mearnsii. Similarly, climate change scenarios could enhance some soil nutrient properties, which in turn, is likely to give the invasive plant A. mearnsii a germination and growth advantage. These results are the first in South Africa to show that future climate changes have the potential to facilitate A. mearnsii germination and growth, making it more invasive. The findings have implications for invasive plants management, especially action for managing the plant through clearing of the plant in sensitive ecosystems (e.g. riparian systems). , Thesis (MSc) -- Faculty of Science, Environmental Science, 2021
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  • Date Issued: 2021-10

Evaluating the physiological, morphological and nutritional effects of elevated atmospheric CO2 and drought on select South African maize cultivars

Evaluation of Megabruchidius tonkineus (Coleoptera: Chrysomelidae: Bruchinae), a candidate biological control agent for Gleditsia triacanthos L. (Fabaceae) in South Africa

  • Authors: Salgado Astudillo, Sara Elizabeth
  • Date: 2021-10
  • Subjects: Honey locust South Africa , Honey locust Biological control South Africa , Invasive plants Biological control South Africa , Biogeography South Africa , Biogeography Climatic factors South Africa , Megabruchidius tonkineus South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/188386 , vital:44749
  • Description: Gleditsia triacanthos L. (Fabaceae) (honey locust) is a fast-growing, deciduous tree indigenous to the United States of America. Introduced around the world as an ornamental tree, it has become invasive in a number of countries. Where it is invasive, G. triacanthos competes and replaces indigenous species; it creates dense stands along watercourses, posing a significant environmental threat. In South Africa, G. triacanthos is regarded as one of the country’s fastest spreading weeds. Gleditsia triacanthos produces numerous seeds contained in large hanging pods. Once dislodged from the pods, the seeds are dispersed by birds and mammals, including livestock, which eat the pods. It has been suggested that the seeds should be the target for biological control programme. Some invasive alien plant species are characterised by their ability to spread and establish in new ecosystems because they tolerate a wide range of environmental conditions. In order to predict areas of likely invasion, species distribution models (SDMs) are used to identify areas climatically suitable for their invasion, so enabling better targeted control of the plant species. Gleditsia triacanthos adapts to a wide range of climates and soil types, and tolerates salinity, drought and frost. Currently primarily restricted to the Grassland Biome of South Africa, G. triacanthos has doubled its distribution area in the past 15 years, and it is not known how far the species will spread. In this study we used two different modelling programmes, CLIMEX and MaxEnt, to predict areas where G. triacanthos could find favourable growing conditions; both SDMs showed that most of the country is suitable for G. triacanthos and that it will probably continue to spread, if left unmanaged, into new bioregions, such as the Karoo. In South Africa, the Asian seed-feeding bruchid, Megabruchidius tonkineus (Pic, 1914) (Coleoptera: Chrysomelidae: Bruchinae) has been recorded in the plant’s seed pods and has been considered as a biological control agent. The insect was not released as part of a formal biological control programme and neither host-specificity nor impact studies were conducted on the species prior to its discovery. In 2017 a decision was made to re-consider its status as a Abstract biological control agent until further details of its biology, host specificity, and impact on the seeds of G. triacanthos in South Africa were available. This study shows that Megabruchidius tonkineus has established across the entire G. triacanthos population in South Africa damaging approximately 9% of seeds. Laboratory studies show that, Megabruchidius tonkineus completes its larval development in the seeds of G. triacanthos in about 66.80 ± 0.6880 SE days before eclosing. In addition, the adult females oviposit on the following Fabaceae species: Arachis hypogaea, Albizia, julibrissin, Cicer arietinum, Pisum sativum, Dipogon lignosus, Peltophorum africanum, Podalyria buxifolia Senegalia burkei, Umtiza listerina and Vachellia sieberiana. However, larval development was limited to G. triacanthos. It is concluded that the seed-feeding beetle is not a threat to native Fabaceae species in South Africa, however, it does not damage enough G. triacanthos seeds to be considered a valuable biological control agent at this stage, and additional seed-feeding biological control agents should be considered to reduce the number of G. triacanthos seeds entering the environment. , Thesis (MSc) -- Faculty of Science, Zoology and Entomology, 2021
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  • Date Issued: 2021-10

Exploring affordances and hindrances when using Grade 8 Physical Science learners’ home language to mediate learning of chemical bonding

  • Authors: Shilongo, Wilhelm Nghidiputate
  • Date: 2021-10
  • Subjects: Science Study and teaching (Secondary) Namibia , Code switching (Linguistics) , Chemical bonds , Education, Bilingual Namibia , Native language and education Namibia , ‎Socio-cultural theory
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/191079 , vital:45056
  • Description: It seems code-switching from English to learners’ home language is a regular practice in Namibian schools. That is, science teachers mediate specific challenging science topics such as chemical bonding through code-switching from English to learners’ home languages. Based on anecdotal evidence and on Grade 10 Examiners’ Reports for previous years, chemical bonding is one of the challenging key concepts in Physical Science, and yet it is an important concept in the study of chemistry. Therefore, the purpose of this interventionist study was to investigate how the use of learners’ home language enables and/or constrains Grade 8 Physical Science learners’ sense making of the topic, chemical bonding. The study is a convergent parallel mixed method case study and was underpinned by an interpretive paradigm. It was conducted with 17 Grade 8 learners in a rural school, where I teach, in the Oshana region. I used a diagnostic test to elicit learners’ prior knowledge on this topic, a post-intervention test, observation, reflections, focus group interview and stimulated recall interviews as my data collection methods. I used Vygotsky’s (1978) Socio-Cultural Theory as my theoretical framework to help explain how learners make sense of the concept of chemical bonding when learners’ home language is used in a Physical Science class. To analyse the quantitative data obtained, I used a descriptive statistics and inferential statistics method. In the descriptive statistics, data were compiled into graphs, tables, and other visual representations, while for the inferential statistics, a t-test was used to establish the significant difference of the data collected. On the other hand, a thematic approach to analyse the qualitative data was employed to come up with sub-themes and themes. The findings of the study revealed that learners’ home language stimulates learners’ interest to learn new concepts, and enhances learners’ understanding and participation during the science lessons. Another finding of the study revealed that learners’ prior knowledge in chemical bonding contained some misconceptions. Furthermore, the findings of the study also revealed that learners learn best when their prior knowledge are elicited before they are introduced to new concepts in their science classrooms. The study recommends that learners’ home language should be incorporated into Physical Science lessons, especially when the teachers are teaching challenging concepts such as chemical bonding. , Thesis (MEd) -- Faculty of Education, Education, 2021
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  • Date Issued: 2021-10

Green Synthesis of HIV-1 Protease Inhibitors

  • Authors: Hartley, Shaun Neil
  • Date: 2021-10
  • Subjects: Uncatalogued
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/190145 , vital:44967
  • Description: Thesis embargoed until October 2022 , Thesis (MSc) -- Faculty of Science, Chemistry, 2021
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  • Date Issued: 2021-10

Impact of press freedom on reportage of corruption in the Nigerian oil and gas industry : a comparative content analysis of four Nigerian Newspapers

  • Authors: Ayodeji-Falade, Monisola Bolajoko
  • Date: 2021-10
  • Subjects: Newspapers -- Nigeria , Freedom of the press , Mass media -- Nigeria
  • Language: English
  • Type: Doctoral theses , text
  • Identifier: http://hdl.handle.net/10353/21805 , vital:51787
  • Description: A free press is pivotal to eradication of corruption in the society as the press remains the most powerful channel of communication that cut across all publics. Thus, this study seeks to evaluate the impact of press freedom on reportage of corruption in the oil and gas industry through a content analysis of four Nigerian newspapers (The Punch, Vanguard, Guardian and Nigerian Tribune). The study adopted a mixed research method involving both quantitative and qualitative approaches. Quantitative data were collected and analysed through content analysis of the selected newspapers while the qualitative data collected through interview of the respective newspaper correspondents were analysed using thematic analysis. The study revealed that 534 stories were published on corruption in the Nigerian oil and gas sector by all the newspapers within the study period (July 2018-June 2019), with the Punch having the highest magnitude of stories (n = 196, 36.70percent) while Nigerian Tribune had the highest number of stories reported on its front and back pages (n = 143, 92.25percent). However, Guardian had the highest number of full-paged stories (n = 15, 20percent) whereas the Punch and Nigerian Tribune adopted the widest range of publication formats with news being the most dominant format employed by all the dailies (n = 462, 86.52percent). Although, all the newspapers employed more episodic frame (n = 432, 80.89percent) than thematic frame (n = 93,17.41percent), framing analysis revealed oil theft, vandalism, alleged-fraud, environmental consequences and economic consequences as the major frames used in the coverage of stories on corruption in the Nigerian oil and gas industry. Thematic analysis showed that the newspaper correspondents did not have access to adequate information on corruption in the sector while journalists in the country are still being subjected to intimidation, arrest and imprisonment. These findings suggest that the selected newspapers gave prominence to reportage of corruption in the oil and gas sector in country, which implies that the newspapers are fulfilling their agenda-setting roles and social responsibility in the society. Nevertheless, the level of press freedom in Nigeria has partly affected the reportage of corruption in the oil and gas sector of the country as this has restricted the use of investigative reporting occasioned by the lack of access to classified information on corruption and envisaged harm by potential sources and journalists. Nevertheless, this study proposes an anticorruption-media model, which focuses on the significance of the media as an anticorruption agent in a developing country. , Thesis (PhD) -- Faculty of Social Sciences and Humanities, 2021
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  • Date Issued: 2021-10

In a novel landscape, in the Eastern Cape, South Africa, what are the key vegetation resources that support livestock production?

  • Authors: Liversage-Quinlan, William Peter
  • Date: 2021-10
  • Subjects: Mzimvubu River Watershed (South Africa) , Livestock productivity South Africa Mzimvubu River Watershed , Range ecology South Africa Mzimvubu River Watershed , Land degradation South Africa Mzimvubu River Watershed , Vegetation dynamics South Africa Mzimvubu River Watershed , Novel landscapes
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/190053 , vital:44959
  • Description: The Tsitsa River is the largest remaining river that is without a dam in South Africa, and so the government has pledged to install two major dams for irrigation and hydroelectricity, under the Mzimvubu Water Project. These dams are intended to supply water and electricity to surrounding communities as well as the large neighbouring urban areas of Mthatha and Tsolo. However, large areas of the Tsitsa Catchment (~494 000 ha) are degraded, posing the possibility that if these dams were to be created, they would inevitably fill with sediment and silt within a few decades. To address these issues, the Tsitsa Project was established in 2014 to co-ordinate actions by government, developers and local communities in order to restore the landscape condition and prevent soil erosion, as well as to improve the livelihoods of the people who live there (Fabricius, Biggs, & Powell, 2016). Research into the landscape condition as well and the environmental interactions with local communities are therefore highly necessary in order to guide restoration practices to their best effect. The economic necessity for livestock production in the catchment indicates its urgent need for a better understanding of its current effects on the catchment landscape and vegetation. The overall goal of this study is to contribute to the knowledge needed to manage the area in a sustainable way. This paper will therefore examine the key vegetation resources that support livestock production in an area of the Tsitsa River Catchment, by describing the various types that exist, and by determining their relative production levels of usable livestock forage. , Thesis (MSc) -- Faculty of Science, Institute for Water Research, 2021
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  • Date Issued: 2021-10

Investigating the feasibility of using remote sensing in index-based crop insurance for South Africa’s smallholder farming systems

  • Authors: Masiza, Wonga https://orcid.org/0000-0002-6224-3812
  • Date: 2021-10
  • Subjects: Precision farming , Agricultural engineering , Climatic changes
  • Language: English
  • Type: Doctoral theses , text
  • Identifier: http://hdl.handle.net/10353/23000 , vital:54890
  • Description: Crop farming in Sub-Saharan Africa (SSA) is largely practiced by resource-poor farmers under rain-fed and unpredictable weather conditions. Since agriculture is the mainstay of SSA’s economy, the lack of improved and adapted agricultural technologies in this region sets back economic development and the fight against poverty. Overcoming this constraint and achieving the sustainable development goal to end poverty, requires innovative tools that can be used for weather risk management. One tool that has been gaining momentum recently is index-based crop insurance (IBCI). Since the launch of the first IBCI program in Africa around 2005, the number of IBCI programs has increased. Unfortunately, these programs are constrained by poor product design, basis risk, and low uptake of contracts. When these issues were first pointed-out in the earliest IBCI programs, many reports suggested satellite remote sensing (RS) as a viable solution. Hence, the first objective of this study was to assess how RS has been used in IBCI, the challenges RS faces, and potential contributions of RS that have not yet been meaningfully exploited. The literature shows that IBCI programs are increasingly adopting RS. RS has improved demarcation of unit areas of insurance and enabled IBCI to reach inaccessible areas that do not have sufficient meteorological infrastructure. However, the literature also shows that IBCI is still tainted by basis risk, which emanates from poor contract designs, the influence of non-weather factors on crop yields, imperfect correlations between satellite-based indices and crop yields, and the lack of historical data for calibration. Although IBCI reports cover vegetation and crop health monitoring, few to none cover crop type and crop area mapping. Furthermore, areas including high-resolution mapping, data fusion, microwave RS, machine learning, and computer vision have not been sufficiently tested in IBCI. The second objective of this study was to assess how RS and machine learning techniques can be used to enhance the mapping of smallholder crop farming landscapes. The findings show that machine learning ensembles and the combination of optical and microwave data can map a smallholder farming landscape with a maximum accuracy of 97.71 percent. The third objective was to identify factors that influence crop yields and crop losses in order to improve IBCI design. Results demonstrated that the pervasive notion that low yields in smallholder farms are related to rainfall is an oversimplification. Factors including fertilizer use, seed variety, soil properties, soil moisture, growing degree-days, management, and socioeconomic conditions are some of the most important factors influencing crop yields and crop losses in smallholder farming systems. This shows why IBCI needs to be part of a comprehensive risk management system that understands and approaches smallholder crop farming as complex by linking insurance with advisories and input supplies. Improved inputs and good farming practices could reduce the influence of non-weather factors on crop losses, and thereby reduce basis risk in weather-based index insurance (WII) contracts. The fourth objective of this study was to assess how well the combination of synthetic aperture radar (SAR) and optical indices estimate soil moisture. As stated earlier, soil moisture was found to be one of the most important factors affecting crop yields. Although this method better estimated soil moisture over the first half of the growing season, estimation accuracies were comparable to those found in studies that had used similar datasets (RMSE = 0.043 m3 m-3, MAE = 0.034 m3 m- 3). Further interrogation of interaction effects between the variables used in this study and consideration of other factors that affect SAR backscatter could improve the method. More importantly, incorporating high-resolution satellite-based monitoring of soil moisture into IBCI could potentially reduce basis risk. The fifth objective of this study was to develop an IBCI for smallholder crop farming systems. The proposed IBCI scheme covers maize and derives index thresholds from crop water requirements and satellite-based rainfall estimates. It covers rainfall deficits over the vegetative, mid-season, and late-season stages of maize growth. The key contribution of this system is the derivation of index thresholds from CWR and site-specific rainfall conditions. The widely used approach, which calibrates IBCI by correlating yields and rainfall, exposes contracts to basis risk because, by simply correlating yield and rainfall data, it overlooks the influence of non-weather factors on crop yields and losses. The proposed system must be linked or bundled with non-weather variables that affect crop yields. Effectively, this means that the insurance must be linked or bundled with advisories and input supplies to address the influence of non-weather factors on crop losses. This system also incorporates a crop area-mapping component, which was found to be lacking in many IBCI systems. In conclusion, an IBCI that is based on crop water requirements, which incorporates crop area mapping and links insurance with non-weather crop yield-determining factors, is potentially capable of improving crop insurance for smallholder farming systems. , Thesis (PhD) -- Faculty of Science and Agriculture, 2021
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  • Date Issued: 2021-10

Investigation of sediment buffering function of the Gatberg Floodplain Wetland in the upper Tsitsa River Catchment, South Africa

  • Authors: Pakati, Sibuyisele Sweetness
  • Date: 2021-10
  • Subjects: Sedimentation and deposition South Africa Eastern Cape , Sediment transport South Africa Eastern Cape , Floodplain morphology South Africa Eastern Cape , Wetlands South Africa Eastern Cape , Suspended sediments South Africa Eastern Cape , Floods South Africa Eastern Cape , Fluvial geomorphology South Africa Eastern Cape , Floodplain plants South Africa Eastern Cape , Inundation depth
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/190792 , vital:45028
  • Description: Floodplain wetlands are important components of river systems that provide various ecosystem services such as sediment buffering. These wide and often expansive storage areas have a substantial impact on downstream water quality by trapping sediment and storing ‘contaminants’ adhered to sediment thus improving water quality. The planned construction of the Ntabelanga and Lalini Dams in the Tsitsa River Catchment has been proposed; however, due to the steep landscapes and erodible soils, this promotes high erosion rates that can potentially reduce the lifespan of the proposed dams. The existing wetlands in the Tsitsa River Catchment have therefore been identified as key sediment buffers that can reduce sediment transport, but the effectiveness of these buffers is poorly researched. This study attempts to investigate the current sediment buffering function of the Gatberg Floodplain Wetland over one wet season (August 2019 to August 2020). Time integrated samplers were installed above and below the wetland to determine relative sediment volume and character coming in and out of the wetland. Five transects were surveyed across the wetland width to evaluate the topography and vegetation characteristics. Surface sediment samples on the floodplain were taken at key morphological features along each transect and along the river longitudinal profile to determine organic content, particle size, and type of stored sediment. Astro turf mats were deployed on targeted transects and on key floodplain features to determine sediment accumulation rates. Field measurements of vegetation parameters (height, density, and stem diameter) were taken to calculate vegetation-induced hydraulic roughness to understand possible sedimentation feedbacks. The relative sediment volume coming into the wetland was greater than that leaving the wetland. This implies that some of the sediment is buffered within the wetland. An approximate proportion of 73% trapping efficiency of the incoming sediment was buffered within the floodplain wetland during the wet season. This accumulated approximately 4 tons within the wetland over the monitoring frame. Bed particle size in the longitudinal profile increased with distance downstream, this was due to localized tributary and hillslope inputs. Inundation depth varied across the floodplain wetland with deeper inundation depths at the head of the wetland than at the bottom; where particle size was larger with an increase in water level depth. This may be linked to both high stream velocities and variability of the floodplain topography. However, the observed trends were inconclusive and uncertain. Stronger correlations with particle size were shown by vegetation roughness (b* = 0.41) and distance from the channel (b* = -0.38). Flood benches and banks had a coarser D50 particle size than back swamps and oxbows. Coarser sediment in flood benches are associated with proximity to the sediment-laden water that experiences abrupt flow velocity changes, while finer material in oxbows are due to minimal flow velocities which reduce with distance from the channel. Finer particles remain in suspension and are carried aloft for longer periods at very low velocities. Therefore, particle size decreased with distance from the channel due to longer travel distances and high surface area relative to weight. Further results showed that finer surface sediment particle size was associated with high vegetation roughness whilst coarser material was associated with low roughness. This was due to vegetation geometry and type or changes in flow velocity and energy. Grassy vegetation induced finer particle size than shrubby vegetation that has a greater line spacing. Furthermore, vegetation roughness varied over the wet season; roughness was highest in late summer and low in early summer. Low roughness was due to fire occurrence in the study area which resulted in a decrease in biomass. Increasing vegetation roughness can be due to increased flood events, and the introduction of non-perennial species; which can increase sediment accumulation rates. Although studies have shown that vegetation density is the most essential factor affecting flow resistance and sedimentation processes; vegetation height and stem diameter for this study area seem to contrast these observations and rather may be the most significant contributing factors in sedimentation. This concluded that vegetation density may not always be the most essential component in sedimentation processes. Sediment particle size was inversely proportional to organic content; finer particle size are more cohesive and more capable of carrying organics. Regions further away from the channel such as oxbows with stable moisture conditions favour plant growth and soil formation thus are susceptible to high organic content. Flood benches are closer to the channel, thus have coarser material and fluctuating moisture conditions that have unstable high water flow velocities. High sediment accumulation rates on flood benches and oxbows is due to high connectivity to sediment-laden water and high hydroperiods or high residence time for sediment accumulation in oxbows. Sediment accumulation rate was shown to be a function of particle size itself (b* = 0.67) rather than the expected vegetation roughness. Although a true representation of sediment accumulation rates in the Gatberg Wetland was limited by the disturbance of astro turf mats by animals and possibly by high flooding events; the wetland can be regarded as a good sediment buffer as some sediment was stored (e.g. up to 48,04 kg/m2 in flood benches) within the wetland over the monitoring period. , Thesis (MSc) -- Faculty of Science, Geography, 2021
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  • Date Issued: 2021-10

Is there an inverse-u relationship between financialisation and investment?: South Africa’s stock market capitalisation in comparative perspective

  • Authors: Owen, Michael Robert
  • Date: 2021-10
  • Subjects: Monetary policy South Africa , Globalization , Economics South Africa , Capital movements South Africa , Stock exchanges South Africa , Investments South Africa , Economic development South Africa , South Africa Economic conditions 1991-
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/191084 , vital:45058
  • Description: In recent decades, the growth and fluctuations in the financial sector have become increasingly disjointed from events in the real economy. There has been a dramatic increase in global market integration and globalisation since the 2008 financial crisis. The argument presented in the thesis shows perspective from the two general debates in Economics. The Orthodox view, which suggests there is an efficient flow of resources between people and institutions over time, supports the argument that there is a positive relationship between financialisation and economic growth. Alternatively, the Heterodox view argues that financial liberalisation fails to anticipate market effects and requires intervention in order to limit negative consequences. More recent studies have proposed an inverse-U theory between financialisation and investment, which suggests that there is a threshold, above which further financial development and financial globalisation has detrimental effects on the real economy. With South Africa being a developing country that is highly reliant on capital inflows to finance the economy, there is space for more acute research to investigate whether South Africa has surpassed this threshold. This study focusses on one aspect of this relationship, namely the relationship between Stock Market Capitalisation and Investment. It uses panel data analysis and other methods to explore whether such an inverse-U relationship exists internationally, and whether South Africa is suffering from the effects of financialisation. , Thesis (MCom) -- Faculty of Commerce, Economics and Economic History, 2021
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  • Date Issued: 2021-10
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