Spatio-temporal variation of the land surface parameters in Temperature, in King Williams Town, Eastern Cape Province, South Africa
- Authors: Willie, Yanga Adrian
- Date: 2020
- Subjects: Environmental sciences
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/12106 , vital:39152
- Description: The world is currently experiencing unprecedented urban growth. The influx of people into urban areas from rural areas is motivated by both economic and social factors such as increased employment opportunities. The latter is a result of, in part, industrialization, and the perceived higher standard of living that is often associated with access to better infrastructure. Surface Heat Island (SHI) is a phenomenon whereby urban areas experience higher surface temperatures than the surrounding rural areas. The presence of the SHI in urban areas has a negative impact not only on city dwellers, but also on the environment and the economy. The development of SHI is often associated with patterns of land use and land cover in urban areas. Numerous methods exist that can be used to study SHI’s. Literature suggests that Land Surface Temperature (LST), derived from satellite imagery, is a proven method that produces reliable results. The aim of this study was to evaluate the SHI in King Williams Town by studying the relationship between land surface temperatures, land cover and land cover indices. The derived indices are the Normalized Difference Vegetation Index (NDVI) and Normalized Difference Built up Index (NDBI). These indices were selected because they are representative of the land cover scheme used in the research study. This study was conducted in the King Williams town area between the years 1995 and 2018 the land surface temperature was derived from Landsat ETM + high thermal band data. The findings from this study provide an idea on the correlation between satellite derived land surface temperature and the land modification which occurred during the urbanization of King Williams Town during a 23 year period between1995 and 2018. The built up land category was the most influential in the development of high land surface temperature levels , vegetation had an opposite effect as a series of data sets illustrated that vegetated areas had a iv cooling effect on the surface. Water bodies in the study area had an insignificant effect on the Surface temperature levels while the grass lands weren’t as cooling as the vegetation but provided a cooling environment in the study area .The spatial distribution of areas of high surface temperature (hot spots) was discovered to be concentrated in the urban areas of the study area which is in the northwest region of the study area and correlates to the land cover and land cover indices associated with built up and artificial surfaces. The cooler areas or patches of land with lower values of land surface temperature were distributed on the outskirts of the study area away from the CBD and residential areas. This was the case because of the high concentration of vegetation and thicker grass lands in those regions.
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The aggressive behaviour among student athletes in collision, contact and noncontact sport
- Authors: Nkqoli , Likhona
- Date: 2019
- Subjects: Sports -- Psychological aspects Aggressiveness
- Language: English
- Type: Thesis , Masters , M Health.Sci.(Human Movement Science)
- Identifier: http://hdl.handle.net/10353/16758 , vital:40771
- Description: Aggressive behaviour among student athletes is often expressed dramatically in both males and females participating in sports. This expression of aggression may have a negative effect on their game during play as well as their psychological well-being. Being either verbally aggressive or physically aggressive during sports has social, economic and psychological consequences, which include changes in character. However, very few international studies and no South African study could be found during a literature search that addressed group differences in the life- and sport aggression among student athletes in contact, non-contact, and collision sports, and gender groups, particularly among varsity sport athletes. Consequently, the aim of this study was to investigate the differences between life- and sport aggression among student athletes in five different sports codes, categorised as collision sport (rugby), contact sport (soccer), and non-contact sports (cricket, netball, basketball), as well as gender differences at a rural university in the Eastern Cape Province, South Afric
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An evaluation of the impact of the biogas digesters project at Melani village, Eastern Cape, South Africa
- Authors: Mthimunye , Thabiso Vincent
- Date: 2018
- Subjects: Biogas
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/14561 , vital:40014
- Description: A study was conducted in Melani rural community of Raymond Mhlaba district in Eastern Cape, with the aim of identifying types of energy sources and households energy utilization. Melani village (32°43’29” S, 27°07’35” E) is 13 km away from Alice, the closest town and its household population is about 350. The survey was conducted with 50% of the randomly chosen households using semi-structured questionnaires and some onset CTA-A hobo current transducers were installed in three households to measure electricity used for either cooking, heating or lighting. The survey shows that electricity (supplied by Eskom) is the main source of energy for cooking, lighting and heating, while paraffin and candles are also used for lighting. The data collected using the data acquisition system has also shown that each household consumes an average of 140 kWh of electricity per month. Assuming this amount of energy being used throughout the year, on average the households consume 1680 kWh of electricity per year. The research concludes that there is a need to promote sustainable energy resources and technologies such as the use of biogas digesters as an alternative source of energy since the households has on average 20 of cattle, 10 of goats, 10 sheep and 4 donkeys. The research has also shown that the economic analysis of the biogas project is financially feasible. The Net present value was high and positive showing the feasibility of the investment on the project. The payback period was implying that the project pays itself off within the service life or within a set payback limit, which must be shorter than the technical service period of 5 years. The research has further shown that the emission factor for carbon dioxide for every 1MWh of electrical energy saved is 1.07 kg and consequently a corresponding volume of avoidance water is 1.40 KL. This can be mentioned that this monthly cost saving in the electrical energy consumption can go a long way in improving the social and economic welfare of the people. More so, it also vi plays a key role in the reduction of the global warming potential and the amount of air pollutant in the atmosphere. The avoidance water also contributed greatly in reducing the total volume of water used in the cooling towers of the coal power generation plant.
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Image processing and data analysis tools of a remote sensing-based euthrophication monitoring system
- Authors: Chamunorwa, Brighton
- Date: 2018
- Subjects: Eutrophication Image processing
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/10210 , vital:35376
- Description: Numerous surface water bodies in South Africa face serious challenges of eutrophication despite several initiatives from government to solve the problem. Government efforts have not been successful particularly because of three issues: 1) insufficient and inconsistent water quality data and 2) the costly nature of collecting this data. Third, the limited uptake of remote sensing based technologies in water quality management due to lack of skills, as well as the lengthy and complex procedures involved in retrieving water quality parameters. This thesis aims to explore the possibilities of using satellite data and simple software for mapping and collecting water quality data. The broad goal was to determine the function of software dedicated to meet the requirements of a remote sensing-based eutrophication-monitoring system. Two specific goal were set in this study: 1. To extract software requirements from available eutrophication management documentation. This was necessary to determine the functions of the dedicated software that matches the legislative requirements and 2. To determine a design capable of handling spatial and temporal requirement of a remote sensing based eutrophication-monitoring system. The study applied Goal Based Requirement Analysis Model [GBRAM] model to extract goals from the National Eutrophication Monitoring Programme [NEMP] implementation plan document and recent publication on remote sensing of water quality monitoring conducted in South Africa. Afterwards, the study used object-oriented concepts to model suitable data objects and processes to implement spatial-temporal requirements of a remote sensing-based eutrophication-monitoring system. Based on the study findings the following are essential functions of a remote sensing based eutrophication-monitoring system. A graphical user interface that allows the user to set up a monitoring programming. Automated image processing procedures. Data assessment methods used to generate eutrophication status information. Numerous display options for viewing data in several perfectives.
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Sustainability challenges and community broadcasting media in Eastern Cape : a comparative study of Forte FM and Vukani FM
- Authors: Mbombo, Nothemba
- Date: 2018
- Subjects: Community radio -- South Africa -- Eastern Cape Radio stations -- South Africa -- Eastern Cape Radio in community development -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , Communication
- Identifier: http://hdl.handle.net/10353/9330 , vital:34325
- Description: This study is a qualitative study focusing on the sustainability challenges affecting the performance of community radio stations in Eastern Cape using Forte FM and Vukani FM as case studies. For the purpose of this study, in-depth interviews and focus group interviews were used to collect data and the researcher had in-depth interviews with the station managers of both radio stations. Another interview was conducted with the programme manager of the Media Development and Diversity Agency (MDDA). In addition, this study conducted one focus group interview with purposively selected participants for each community radio station to get their views on the functioning and sustainability challenges facing each of the radio station and how they see them helping their communities. The findings of the study revealed that the major sustainability challenges faced by the stations are finances and lack of resources. The lack of resources is a major problem as it reflects a lack of political will and policies that have failed to recognize the importance of communication as a social process that can help to bring change and development (Fraser & Estrada, 2003:3). As revealed by the findings of this study, the most serious challenge that both stations face is financial sustainability as they had said they struggle to function because they do not have money to pay their staff, and to pay the National Community Radio Forum (NCRF) in order to be kept on air and to deliver their content to the targeted audiences. This study also found out that the stations are not able to train their reporters while they are not getting a regular assistance from the Minister of Communications. The radio stations noted that the Department of Communications used to assist them some years ago but now support only comes from the MDDA. On the other hand, the study also revealed that the MDDA do assist the community radio stations by providing them with necessary broadcasting and transmission equipment and facilities to make sure that they stay on air. This study therefore, concludes that despite the several sustainability challenges faced by these community radio stations, they are still able to contribute to the development of their communities
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Qualitative assessment of the performance and challenges of the recapitalization and development programme : the case of Buffalo City metropolitan municipality, Eastern Cape, South Africa
- Authors: Maka, Loquitur
- Date: 2017
- Subjects: Mentoring--South Africa--Eastern Cape Land reform--South Africa--Eastern Cape Agricultural assistance--South Africa--Eastern Cape
- Language: English
- Type: Thesis , Masters , Agricultural Extention
- Identifier: http://hdl.handle.net/10353/11619 , vital:39090
- Description: The Recapitalization and Development Programme (RADP) is a tool which seeks to provide black emerging farmers with the social and economic infrastructure and basic resources that are required to run a successful agricultural business. The RADP’s objectives include: to increase production, to guarantee food security, to graduate emerging farmers to commercial farmers and to create jobs opportunities within the agricultural sector. But above all, the unstated objective of the RADP is to revive failing land reform projects. The aim of the study was to evaluate the impact of the RADP, specifically looking at land reform beneficiaries in Buffalo City Metropolitan Municipality. Qualitative research was conducted in the form of seven in-depth case studies of RADP-supported land reform projects, together with interviews with four RADP mentors and three government officials. Some of the challenges in the farms before RADP funding was received included: little or no income, high mortality rate of livestock, and lack of skills. The study revealed that the RADP funds contribute to making a difference to the beneficiaries’ activities and provide the necessary infrastructure and equipment for sustainable commercial production. Even though there were mostly positive responses from the beneficiaries, some were dissatisfied with their mentors because the feel that some mentors do not understand their role and responsibilities. Most beneficiaries who appreciated the mentorship programme seem to be older people. However, the impact as mentioned by the mentors is not sustainable due to the short duration of support by the government both in terms of the mentorship and financial support to the projects.
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Creation and detection of Vector Bessel Beams
- Authors: Omoefe, Idisi David , Forbes, Andrew
- Date: 2016
- Subjects: Vector analysis Quantum theory
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/1785 , vital:27558
- Description: Bessel beams are optical fields which falls into the category of non-diffracting beams. Vector Bessel beams are vector beams possessing cylindrical symmetry. Cylindrically symmetric beams tend to have a tight focal point during propagation. The tight focal beam nature of vector Bessel beams makes them a good potential in various facets of science such as biological optical trapping, wireless communications, remote sensing, microscopy etc. In this research work, vector Bessel beams were generated using the phase of an Axicon that was encoded into a spatial light modulator. Firstly, scalar Bessel beams which possess linear polarization were generated and converted to circularly polarized vector beams by the use of a q-plate. The orbital angular momentum (OAM) modes that are embedded in the vortex beams were detected using modal decomposition technique. This was implemented for both the scalar and vector case using a quarter wave plate. The measure of the degree of non-separability of the vector Bessel beams using tomographic quantum tools was also implemented where the density matrix was reconstructed. The concurrence and fidelity which explore the measure of vectorness of both scalar and vector Bessel beams were calculated from the density matrix. The obtained results show that the spatial modes and polarization are coupled in the vector case as expected.
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Implementing the green city policy in municipal spatial planning : the case of Buffalo City Metropolitan Municipality
- Authors: Dlani, Abongile
- Date: 2016
- Subjects: Climatic changes--South Africa--Eastern Cape City planning--Environmental aspects--South Africa--Eastern Cape Sustainable buildings--South Africa--Eastern Cape
- Language: English
- Type: Thesis , Masters , Administration
- Identifier: http://hdl.handle.net/10353/15583 , vital:40476
- Description: The term “eco-city,” and similar concepts such as “green” and “sustainable” cities, has evolved over time concurrent to the development of the understanding of social change and mankind’s impact on environmental and economic health. With the advent of climate change impacts, modern economies developed the green city policy to create sustainable urban development, low emission, and environmentally friendly cities. In South Africa municipalities, including Buffalo City Metropolitan Municipality (BCMM) have been tasked to develop and implement the green city policy. However, BCMM is yet to develop the green city policy that clearly articulate how the municipality will combat climate change and reduce its GHG omissions in its spatial planning designs.
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