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Understanding climate change and rural livelihoods in Zimbabwe: adaptation by communal farmers in Ngundu, Chivi District

  • Authors: Nciizah, Elinah
  • Date: 2020
  • Subjects: Agriculture -- Zimbabwe , Agriculture -- Climatic factors -- Chivi District (Zimbabwe) , Chivi District (Zimbabwe) -- Rural conditions
  • Language: English
  • Type: text , Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/118765 , vital:34666
  • Description: Climate change and variability is a global phenomenon which has deeply localised patterns, dynamics and effects. Amongst those people who are particularly vulnerable to climate change effects are small-scale farmers who are dependent in large part on rain-fed agriculture in pursuing their livelihoods. This is true of small-scale farmers in contemporary Zimbabwe and, more specifically, farmers in communal areas. At the same time, at international and national levels, there are attempts currently to minimise the effects of, and to adapt to, climate change. However, adaptation measures also exist at local levels amongst small-scale farmers, such as communal farmers in Zimbabwe. In this context, as its main objective, this thesis examines climate change and small-scale farmer livelihood adaptation to climate change with specific reference to communal farmers in Chivi District in Zimbabwe and, in particular, in Ward 25 which is popularly known as Ngundu. In pursuing this main objective, a number of subsidiary objectives are addressed, including a focus on the established livelihoods of Ngundu farmers, the perceptions and concerns of Ngundu farmers about climate change, the coping and adaptation measures of Ngundu farmers, and the enablements and constraints which affect attempts by Ngundu farmers to adopt such measures. The fieldwork for the thesis involved a diverse array of research methods, such as a questionnaire survey, life-history interviews, key informant interviews, focus group discussions and transect walks. In terms of theoretical framing, the thesis makes use of both middle-level theory (the Sustainable Livelihoods Framework) and macro-theory in the form of the sociological work of Margaret Archer. Combined, these two theories allow for a focus on both structure and agency when seeking to understand livelihood adaptations to climate change by communal farmers in Ngundu. The thesis concludes that there are massive constraints inhibiting adaptation measures by Ngundu farmers, but that this should not distract from the deep, often historically-embedded, concerns of Ngundu farmers about climate change and the multiple ways in which they express agency in and through adaptation and coping activities. It also highlights the need for more specifically sociological investigations of climate change and small-scale farmer adaptation, as well as the need for localised studies which are able to identify and analyse the specificities of adaptation.
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  • Date Issued: 2020

Understanding individual, family and community perspectives on delaying early birth among adolescent girls

  • Authors: Samandari, Ghazaleh , Sarker, Bidhan Krishna , Grant, Carolyn , Talukder, Aloka , Mahfuz, Sadia Nishat , Brent, Lily , Nitu, Syeda N.A. , Aziz, Humaira , Gullo, Sara
  • Date: 2020
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/281153 , vital:55697 , xlink:href="https://doi.org/10.1186/s12905-020-01044-z"
  • Description: Background: Pregnancy among adolescent girls in Bangladesh is high, with 66% of women under the age of 18 reporting a first birth; this issue is particularly acute in the northern region of Bangladesh, an area that is especially impoverished and where girls are at heightened risk. Using formative research, CARE USA examined the underlying social, individual and structural factors influencing married girls’ early first birth and participation in alternative opportunities (such as education or economic pursuits) in Bangladesh. Methods: In July of 2017, researchers conducted in-depth interviews of community members in two sub-districts of northern Bangladesh (Kurigram Sadar and Rajarhat). Participants (n = 127) included adolescent girls (both married and unmarredi), husbands of adolescent girls, influential adults in the girls’ lives, community leaders, and health providers. All interviews were transcribed, coded and organized using Dedoose software. Results: Participants recognize the health benefits of delaying first birth, but stigma around infertility and contraceptive use, pressure from mothers-in-law and health provider bias interfere with a girl’s ability to delay childbearing. Girls’ social isolation, lack of mobility or autonomy, and inability to envision alternatives to early motherhood compound the issue; provider bias may also prevent access to methods. While participants agree that pursuit of education and economic opportunities are important, better futures for girls do not necessarily supersede their marital obligations of childrearing and domestic chores. Conclusions: Findings indicate the need for a multi-level approach to delaying early birth and stimulating girls’ participation in economic and educational pursuits. Interventions must mitigate barriers to reproductive health care; train adolescent girls on viable economic activities; and provide educational opportunities for girls. Effective programs should also address contextual issues by including immediate members of the girls’ families, particularly the husband and mother-in-law.
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  • Date Issued: 2020

Understanding of biological teleology from a naturalistic perspective

  • Authors: Abrahams, Sanaa
  • Date: 2020
  • Subjects: Teleology , Biology -- Philosophy , Evolution (Biology) -- Philosophy
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/140534 , vital:37896
  • Description: To the extent that teleological thinking is metaphysically suspect, many theorists attempt to shift the stigma of functional explanations by reducing function ascriptions, and aim thus to de-legitimise an appeal to teleological causal relations in an analysis of function. The point is to dispel the mystery which envelops the application of function concepts by reformulating biological functional explanations so as to dispense with teleology. My project is to interrogate the success with which teleological explanations have thus been eliminated in the biological sciences, and, over the course of this thesis, I conclude that a kind of teleological causation nevertheless remains the most adequate explanatory ground of natural products. My proposal is that functional explanations are causal explanations for the presence and maintenance of self-reproducing systems. I contend that, insofar as the attribution of function presupposes the valuation of a function-bearing system as a causal necessity for its constituent parts, functional explanation references distinct and irreducible holistic properties. Using Kantian metaphysics to frame the discussion, this thesis aims first to explore critically the subject of functional characterisations of biological phenomena, and second, the metaphysical basis of modern science. Its chief contributions to the philosophical function debate reside in proposing novel arguments in justification of what I consider is an improved formulation of an attempted definition of biological function, in which teleological causal powers are explicitly recognised and accommodated in functional explanation. Moreover, this thesis attempts a naturalistic reconstruction of the metaphysical entailments of the real causality of a whole
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  • Date Issued: 2020

Understanding of the underlying resistance mechanism of the Kat-G protein against isoniazid in Mycobacterium tuberculosis using bioinformatics approaches

  • Authors: Barozi, Victor
  • Date: 2020
  • Subjects: Mycobacterium tuberculosis , Isoniazid , Drug resistance in microorganisms , Proteins -- Microbiology
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/146592 , vital:38540
  • Description: Tuberculosis (TB) is a multi-organ infection caused by rod-shaped acid-fast Mycobacterium tuberculosis. The World Health Organization (WHO) ranks TB among the top 10 fatal infections and the leading the cause of death from a single infection. In 2017, TB was responsible for an estimated 1.3 million deaths among both the HIV negative and positive populations worldwide (WHO, 2018). Approximately 23% (roughly 1.7 billion) of the world’s population is estimated to have latent TB with a high risk of reverting to active TB infection. In 2017, an estimated 558,000 people developed drug resistant TB worldwide with 82% of the cases being multi-drug resistant TB (WHO, 2018). South Africa is ranked among the 30 high TB burdened countries with a TB incidence of 322,000 cases in 2017 accounting for 3% of the world’s TB cases. TB is curable and is clinically managed through a combination of intensive and continuation phases of first-line drugs (isoniazid, rifampicin, ethambutol, and pyrazinamide). Second-line drugs which include fluoroquinolones, injectable aminoglycoside and injectable polypeptides are used in cases of first line drug resistance. The third-line drugs include amoxicillin, clofazimine, linezolid and imipenem. These have variable but unproven efficacy to TB and are the last resort in cases of total drug resistance (Jilani et al., 2019). TB drug resistance to first-line drugs especially isoniazid in M. tuberculosis has been attributed to single nucleotide polymorphisms (SNPs) in the catalase peroxidase enzyme (katG), a protein important in the activation of the pro-drug isoniazid. The SNPs especially at position 315 of the katG enzyme are believed to reduce the sensitivity of the M. tuberculosis to isoniazid while still maintaining the enzyme’s catalytic activity - a mechanism not completely understood. KatG protein is important for protecting the bacteria from hydro peroxides and hydroxyl radicals present in an aerobic environment. This study focused on understanding the mechanism of isoniazid drug resistance in M. tuberculosis as a result of high confidence mutations in the katG through modelling the enzyme with its respective variants, performing MD simulations to explore the protein behaviour, calculating the dynamic residue network analysis (DRN) of the variants in respect to the wild type katG and finally performing alanine scanning. From the MD simulations, it was observed that the high confidence mutations i.e. S140R, S140N, G279D, G285D, S315T, S315I, S315R, S315N, G316D, S457I and G593D were not only reducing the backbone flexibility of the protein but also reducing the protein’s conformational variation and space. All the variant protein structures were observed to be more compact compared to the wild type. Residue fluctuation results indicated reduced residue flexibility across all variants in the loop region (position 26-110) responsible for katG dimerization. In addition, mutation S315T is believed to reduce the size of the active site access channel in the protein. From the DRN data, residues in the interface region between the N and C-terminal domains were observed to gain importance in the variants irrespective of the mutation location indicating an allosteric effect of the mutations on the interface region. Alanine scanning results established that residue Leucine at position 48 was not only important in the protein communication but also a destabilizing residue across all the variants. The study not only demonstrated change in the protein behaviour but also showed allosteric effect of the mutations in the katG protein.
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  • Date Issued: 2020

Understanding popular resistance to xenophobia in South Africa: ‘people think’ and the possibility of alternative politics

  • Authors: Parker, Jemima
  • Date: 2020
  • Subjects: Xenophobia -- South Africa , Nationalism -- South Africa , Lazarus, Sylvain -- Political and social views , Political culture -- South Africa , Social change -- South Africa -- Political aspects , Discourse analysis -- South Africa -- Political aspects , South Africa -- Politics and government -- 1994- , Political science -- Philosophy , Political sociology -- South Africa
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/115006 , vital:34069
  • Description: This thesis is concerned with the crisis of xenophobia in South Africa. It argues, firstly, that xenophobia itself is not primarily a reaction to poverty, inequality, or any other set of social conditions. Rather, xenophobia must be considered to be a collective political discourse which has arisen in post-apartheid South Africa from an exclusionary conception of state nationalism. Where this work may be distinguished from the majority of research on xenophobia in South Africa is in the fact that its particular focus is on instances where ‘ordinary’ South Africans have challenged and resisted xenophobic violence in their communities through collective political mobilisation. I suggest that these sites of resistance deserve careful consideration in their own right. I argue that they may demonstrate a subjective break with the oppressive politics of state nationalism through the affirmation of alternative political conceptions. Drawing on the political theory of Sylvain Lazarus, and his principal thesis that people are capable of thinking politics in ways which can subjectively think beyond the social and the extant (underscored by his political and methodological axiom, people think), this thesis argues that these sites of resistance show that people – and especially those who are considered to be marginalised from the domain of legitimate politics – can and do think politically, and it is in the thought of people that new and potentially emancipatory visions of politics may emerge.
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  • Date Issued: 2020

Understanding the context of multifaceted collaborations for social-ecological sustainability: A methodology for cross-case analysis

  • Authors: Cockburn, Jessica J , Schoon, Michael , Cundill, Georgina , Robinson, Cathy , Aburto, Jamie A , Alexander, Steve M , Baggio, Jacopo A , Barnaud, Cecile , Chapman, Mollie , Llorente, Marina G , Garcia-Lopez, Gustavo A , Hill, Rosemary , Speranza, Chinwe I , Lee, Jean , Meek, Chanda L , Rosenberg, Eureta , Schultz, Lisen , Thondhlana, Gladman
  • Date: 2020
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/370725 , vital:66371 , xlink:href="https://doi.org/10.5751/ES-11527-250307"
  • Description: There are limited approaches available that enable researchers and practitioners to conduct multiple case study comparisons of complex cases of collaboration in natural resource management and conservation. The absence of such tools is felt despite the fact that over the past several years a great deal of literature has reviewed the state of the science regarding collaboration. Much of this work is based on case studies of collaboration and highlights the importance of contextual variables, further complicating efforts to compare outcomes across case-study areas and the likely failure of approaches based on one size fits all generalizations. We expand on the standard overview of the field by identifying some of the challenges associated with managing complex systems with multiple resources, multiple stakeholder groups with diverse knowledges/understandings, and multiple objectives across multiple scales, i.e., multifaceted collaborative initiatives. We then elucidate how a realist methodology, within a critical realist framing, can support efforts to compare multiple case studies of such multifaceted initiatives. The methodology we propose considers the importance and impact of context for the origins, purpose, and success of multifaceted collaborative natural resource management and conservation initiatives in social-ecological systems.
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  • Date Issued: 2020

Understanding the links between smallholder farmers and retailers of meat and vegetables in Mthatha, Mqanduli, Port St Johns and Tsolo, Eastern Cape, South Africa

  • Authors: Qaula, Nyaniso
  • Date: 2020
  • Subjects: Farms, Small
  • Language: English
  • Type: Thesis , Masters , M Agric
  • Identifier: http://hdl.handle.net/10353/18823 , vital:42811
  • Description: It is commonly accepted that one of the challenges faced by smallholder farmers is lack of ‘access to markets’. This is especially so against the backdrop of the supermarket revolution, which is widely understood to give advantage to large-scale farmers at the expense of smallholder farmers. Given that supermarkets are now well established even within South Africa’s former homelands, it would seem that even smallholders based in these areas are at a disadvantage. The purpose of this study is to delve deeply into the market access of smallholder farmers, and to do so specifically across a large area of the former Transkei where supermarkets are well established and where there are also a range of other types of retailers. The study seeks to understand the links between smallholder farmers and diverse kinds of food retailers of meat and vegetables in and around the towns of Mthatha, Mqanduli, Port St Johns and Tsolo in the Eastern Cape Province, South Africa. For each of these sites, the study estimates the share of purchased fresh vegetables and meat that ultimately originates from smallholder farmers within the former Transkei, as opposed to large-scale farmers further afield. The findings suggest that smallholder farmers account for about 24% to 40% of fresh vegetables, and 3% to 13% of meat. The difference between vegetables and meat seems to relate to the fact that smallholder farmers account for a reasonably large share of the fresh vegetables sold by at least some supermarkets, whereas smallholder livestock farmers are largely unable to sell to abattoirs, whether because of the standards imposed by these abattoirs (including the one in Mthatha), or because of the cost of transport. The differences between sites appear to be a function of several factors, including differential market size and resource endowments. The study further sought to identify the advantages and disadvantages that the different types of retailers experience in procuring from smallholder farmers, and also identify the advantages and disadvantages that smallholder farmers experience in supplying different types of retailers. The advantage of working with smallholder farmers is that smallholder farmers can even deliver on Sundays, unlike other suppliers that refuse to work during weekends. The disadvantage is that smallholder farmers are not producing consistently therefore it is hard to rely on smallholder farmers for supply of produce. The advantage that smallholder farmers experience in supplying different types of retailers is that they get their cash right away after delivering the produce. The challenge that smallholder farmers experience when supplying food retailers is that some of the supermarkets will see the sample and order large quantity, however on the day of delivery they will complain and say it is not the good quality so the farmers must reduce the selling price. The study suggests the strategy that could be used by farmers to access the market, which is to enhance knowledge of market skills and negotiation skills.
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  • Date Issued: 2020

Understanding the livelihoods of Zimbabwean informal traders in South Africa: the case of Makhanda

  • Authors: Musiyandaka, Tariro Henrietta
  • Date: 2020
  • Subjects: Informal sector (Economics) South Africa Makhanda , Foreign workers, Zimbabwean South Africa Makhanda Economic conditions , Foreign workers, Zimbabwean South Africa Makhanda Social conditions , Street vendors South Africa Makhanda
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10962/164535 , vital:41127
  • Description: Increasingly, Zimbabweans are migrating from their country for both economic and political reasons, with South Africa being the primary destination. In seeking employment in South Africa, Zimbabweans face numerous initial problems, including the high unemployment rate in the country alongside restrictions on their employment in the formal economy. In this context, Zimbabweans often turn to work in the informal economy, including as informal traders. This thesis seeks to understand the lives and livelihoods of Zimbabwean informal traders in Makhanda in the Eastern Cape Province of South Africa. Drawing upon the Sustainable Livelihoods Approach, and in the light of existing literature on Zimbabweans more broadly in South Africa, the thesis examines the livelihoods of a purposeful sampled grouping of six informal traders from Zimbabwe in Makhanda. It discusses their reasons for leaving Zimbabwe, their journey from Zimbabwe to Makhanda, relationships amongst themselves and their ongoing relationships with family back home, as well as their hopes and plans for the future. It also examines more specifically their livelihood activities, the daily challenges they face in pursuing their livelihoods and concerns about their livelihood status in South Africa. Despite the many deep-rooted systemic obstacles confronting these Zimbabwean informal traders, the thesis concludes that they demonstrate significant micro-level ingenuity in pursuing their livelihoods in South Africa. , Thesis (MA) -- Faculty of Faculty of Humanities, Sociology, 2020
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  • Date Issued: 2020

Understanding the Pyrimethamine drug resistance mechanism via combined molecular dynamics and dynamic residue network analysis:

  • Authors: Amusengeri, Arnold , Tata, Rolland B , Tastan Bishop, Özlem
  • Date: 2020
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/163022 , vital:41005 , https://doi.org/10.3390/molecules25040904
  • Description: In this era of precision medicine, insights into the resistance mechanism of drugs are integral for the development of potent therapeutics. Here, we sought to understand the contribution of four point mutations (N51I, C59R, S108N, and I164L) within the active site of the malaria parasite enzyme dihydrofolate reductase (DHFR) towards the resistance of the antimalarial drug pyrimethamine. Homology modeling was used to obtain full-length models of wild type (WT) and mutant DHFR. Molecular docking was employed to dock pyrimethamine onto the generated structures. Subsequent all-atom molecular dynamics (MD) simulations and binding free-energy computations highlighted that pyrimethamine’s stability and affinity inversely relates to the number of mutations within its binding site and, hence, resistance severity.
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  • Date Issued: 2020

Understanding the relationship between mangrove composition, stand dynamics and resource use in the Ntafufu estuary, Eastern Cape, as basis for sustainable resource use

  • Authors: Mvakade, Monica , Rajkaran, Anusha
  • Date: 2020
  • Subjects: Estuarine ecology -- South Africa -- Eastern Cape , Aquatic ecology , Marine sciences , Fresh water
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/49215 , vital:41611
  • Description: Traditionally, coastal communities along the Wild Coast in the Eastern Cape, used mangrove forests for their livelihoods and socio-economic needs. Mangroves along the Eastern Cape coast are threatened by both natural and human factors. The wood obtained from the mangroves by rural households was used as poles for house and fence construction, firewood, and traditional medicine. This is a threat to the status of several mangrove species in this and surrounding areas. The harvesting of mangrove trees will have a direct and indirect effect on the other biotic and abiotic components of the mangrove ecosystems. The Department of Agriculture, Forestry and Fisheries (DAFF) (currently the Department of Environment, Forestry and Fisheries, or DEFF), through the National Forest Act no 84 of 1998, was directly responsible for the wellbeing of the national forests in South Africa. This also includes the mangroves as a specific national forest type. Several estuaries with mangroves occur within state forests. The harvesting and clear-felling of trees for timber and land conversion and associated waste of harvested mangrove poles and laths causes the many changes in mangrove forests. The aim of this study was to develop a framework for sustainable management of the mangroves for the Mtambalala forest management unit. This was done in relation to the requirements of the current legislation, policy guidelines and business plan of the management authority. The aim was pursued through two specific objectives. The first objective was to understand the variation in the composition in different parts of the Ntafufu Estuary, and the population dynamics of the main mangrove species, as basis for the development of sustainable resource use practices. Plots along transects were used to measure seedling to adult ratios, population structure and abiotic characteristics. The second objective was to understand the community use and requirements of mangrove wood from the Ntafufu Estuary. A participatory approach was followed to collect demographic data from each community, the requirements of mangrove poles and behaviour of harvesters. This was used to set up a framework to guide the sustainable management of mangroves based on the current status and stand dynamics of the mangrove communities. There are three mangrove species found in the Ntafufu Estuary: Bruguiera gymnorhiza (black mangrove) regenerates under the mangrove canopy and forms layers of even-aged stands. Avicennia marina (white mangrove) does not regenerate under a mangrove canopy i.e. the seedlings establish outside the canopy. A few Rhizophora mucronata (red mangrove) trees exist in the lower intertidal zone and form multiple stems on stilt roots. The mangrove associate, Hibiscus tiliaceus (wild cotton tree- mangrove associate), forms dense clusters of scrambling stems. Some of the Avicennia individuals show signs of mangrove bleeding and one individual of Bruguiera showed indications of disease. Mngazana and Ntafufu Estuaries had the highest tree densities of 2594 and 1402 trees ha-1 respectively, typical of riverine mangrove forest. The seedling to adult ratio was high in this study: 12.8 for B. gymnorrhiza and 24.3 for A. marina. Abandoned cut stems and laths were found during the study. Bark harvested for traditional medicine and cattle feeding in mangroves was also prevalent and expected to reduce the health of the forest. Mangroves in the Ntafufu Estuary are expanding, and the population structure of the three mangrove species showed a healthy balance between young and mature stems. The harvesting of Black mangrove (B. gymnorrhiza) poles for mainly roof construction is relatively limited. As part of the functions of the DAFF, the use of the mangrove resources has to be balanced with the resource availability from the mangroves, and this should result in a healthy functioning mangrove forest. Development of a participatory forest management (PFM) plan for a forest estate and its forest management unit, require an understanding of the mangrove communities and their dynamics, and the current level of resource use associated with the mangroves. The study recommended that a Mangrove Pole Harvesters Group is needed to practice silviculture through guidance of relevant governmental personnel.
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  • Date Issued: 2020

Understanding the underlying resistance mechanism of Mycobacterium tuberculosis against Rifampicin by analyzing mutant DNA - directed RNA polymerase proteins via bioinformatics approaches

  • Authors: Monama, Mokgerwa Zacharia
  • Date: 2020
  • Subjects: Mycobacterium tuberculosis , Rifampin , Drug resistance , Homology (Biology) , Tuberculosis -- Chemotherapy
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/167508 , vital:41487
  • Description: Tuberculosis or TB is an airborne disease caused by the non-motile bacilli, Mycobacterium tuberculosis (MTB). There are two main forms of TB, namely, latent TB or LTB, asymptomatic and non-contagious version which according to the World Health Organization (WHO) is estimated to afflict over a third of the world’s population; and active TB or ATB, a symptomatic and contagious version which continues to spread, affecting millions worldwide. With the already high reported prevalence of TB, the emergence of drug-resistant strains has prompted the development of novel approaches to enhance the efficacy of known drugs and a desperate search for novel compounds to combat MTB infections. It was for this very purpose that this study was conducted. A look into the resistance mechanism of Rifampicin (Rifampin or RIF), one of the more potent first-line drugs, might prove beneficial in predicting the consequence of an introduced mutation (which usually occur as single nucleotide polymorphisms or SNPs) and perhaps even overcome it using appropriate therapeutic interventions that improve RIF’s efficacy. To accomplish this task, models of acceptable quality were generated for the WT and clinically relevant, RIF resistance conferring, SNPs occurring at codon positions D516, H526 and S531 (E .coli numbering system) using MODELLER. The models were accordingly ranked using GA341 and z-DOPE score, and subsequently validated with QMEAN, PROCHECK and VERIFY3D. MD simulations spanning 100 ns were run for RIF-bound (complex) and RIF-free (holo) DNA-directed RNA polymerase (DDRP) protein systems for the WT and SNP mutants using GROMACS. The MD frames were analyzed using RMSD, Rg and RMSF. For further analysis, MD-TASK was used to analyze the calculated dynamic residue networks (DRNs) from the generated MD frames, determining both change in average shortest path (ΔL) and betweenness centrality (ΔBC). The RMSD analysis revealed that all of the SNP complex models displayed a level instability higher than that of the WT complex. A majority of the SNP complex models were also observed to have similar compactness to the WT holo when looking at the calculated Rg. The RMSF results also hinted towards possible physiological consequences of the mutations (generally referred to as a fitness cost) highlighted by the increased fluctuations of the zinc-binding domain and the MTB SI α helical coiled coil. For the first time, to the knowledge of the authors, DRN analysis was employed for the DDRP protein for both holo and complex systems, revealing insightful information about the residues that play a key role in the change in distance between residue pairs along with residues that play an essential role in protein communication within the calculated RIN. Overall, the data supported the conclusions drawn by a recent study that only concentrated on RIF-resistance in rpoB models which suggested that the binding pocket for the SNP models may result in the changed coordination of RIF which may be the main contributor to its impaired efficacy.
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  • Date Issued: 2020

Underutilisation of information communication and technology in the building construction industry case study : department of public works in the Amathole district in the Eastern Cape

  • Authors: Camngca, Vuyokazi Precious
  • Date: 2020
  • Subjects: Construction industry -- Technological innovations -- South Africa -- Amathole District Municipality.
  • Language: English
  • Type: Thesis , Masters , MBE
  • Identifier: http://hdl.handle.net/10948/49407 , vital:41718
  • Description: This study investigated the causes and effects of the underutilisation of Information Communication Technology (ICT) in the building section of the Amathole Region. The construction industry’s daily processes demand both heavy usages of data and data communication between project participants to meet client requirements. This industry is characterised by inaccurate and untimely communications that often result in costly delays and extensions of the project timeframe. ICT is a potential solution to this problem. The objectives of the study are, therefore, to determine why the above, a technically skilled occupational government institution in the Eastern Cape, does not employ ICT efficiently and optimally during this time of the looming global fourth industrial revolution. The literature review detailed the causes of and impact level of ICT’s utilisation and its potential benefits. For data collection, the researcher held unstructured interviews with a Chief Quantity Surveyor, Chief Architect, Engineer, Building Inspectors, and a Quantity Surveyor who dealt directly with construction projects. The key findings revealed that a lack of understanding of existing and newly available ICT software and hardware technology existed amongst certain senior officials within the building technology. The previously alluded, combined with the fear of the inability to learn and apply such new technology, has led to a culture of resistance to change from these more senior officials to utilise applications such as AutoCAD. The above-mentioned resistance, has also triggered the prevention of access to and lack of ICT resources, training, and inadequate funding, thereby eventually resulting in the underutilisation of ICT within the whole building section. This change also adversely affects all officials, especially the junior officials who have graduated using the most recent ICT technology during their studies. The researcher deduced, from the above findings, that adequate change management and continuous development, combined with the allocation of proper resources, would be necessary for all staff members. It was also determined that investments had to be made in the ICT equipment through the provision of a sufficient budget in the building section at AR.
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  • Date Issued: 2020

Underutilisation of information communication and technology in the building construction industry case study: Department of Public Works in the Amathole district in the Eastern Cape

  • Authors: Camngca, Vuyokazi Precious
  • Date: 2020
  • Subjects: Construction industry -- Information technology , Construction industry -- Data processing Information technology Communication and technology
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/50632 , vital:42280
  • Description: This study investigated the causes and effects of the underutilisation of Information Communication Technology (ICT) in the building section of the Amathole Region. The construction industry’s daily processes demand both heavy usages of data and data communication between project participants to meet client requirements. This industry is characterised by inaccurate and untimely communications that often result in costly delays and extensions of the project timeframe. ICT is a potential solution to this problem. The objectives of the study are, therefore, to determine why the above, a technically skilled occupational government institution in the Eastern Cape, does not employ ICT efficiently and optimally during this time of the looming global fourth industrial revolution. The literature review detailed the causes of and impact level of ICT’s utilisation and its potential benefits. For data collection, the researcher held unstructured interviews with a Chief Quantity Surveyor, Chief Architect, Engineer, Building Inspectors, and a Quantity Surveyor who dealt directly with construction projects. The key findings revealed that a lack of understanding of existing and newly available ICT software and hardware technology existed amongst certain senior officials within the building technology. The previously alluded, combined with the fear of the inability to learn and apply such new technology, has led to a culture of resistance to change from these more senior officials to utilise applications such as AutoCAD. The above-mentioned resistance, has also triggered the prevention of access to and lack of ICT resources, training, and inadequate funding, thereby eventually resulting in the underutilisation of ICT within the whole building section. This change also adversely affects all officials, especially the junior officials who have graduated using the most recent ICT technology during their studies. The researcher deduced, from the above findings, that adequate change management and continuous development, combined with the allocation of proper resources, would be necessary for all staff members. It was also determined that investments had to be made in the ICT equipment through the provision of a sufficient budget in the building section at AR.
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  • Date Issued: 2020

Unfair discrimination relating to mental illness

  • Authors: Skosana, Hlengiwe
  • Date: 2020
  • Subjects: Discrimination -- Mental health
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: http://hdl.handle.net/10948/47443 , vital:39991
  • Description: Section 9 of the Constitution of the Republic of South Africa, 1996 provides that everyone has the right to equality. The Employment Equity Act, the Promotion and Prevention of Unfair Discrimination Act and the Labour Relations Act were promulgated to fulfil the Constitution’s goals of promoting equality and prohibiting unfair discrimination. Section 6(1) of The Employment Equity Act promotes equality in the workplace and prohibits unfair discrimination; section 187 of the Labour Relations Act provides that dismissals on the grounds listed in the section are automatically unfair; and section 6 of the Promotion and Prevention of Unfair Discrimination Act prohibits unfair discrimination in general. International law prohibits unfair discrimination. Article 1 of the International Labour Organisation’s Convention concerning Discrimination in Respect of Employment and Occupation provides that discrimination in the workplace that has the effect of impairing or nullifying equal opportunity or treatment is prohibited; Article 7 of the United Nations Declaration of Human Rights provides that all are equal before the law and are entitled to protection against any discrimination; and the United Nations Charter and the African United Charter on Human and People’s Rights both promote the right to equality. South Africa has signed and/or ratified these international anti-discrimination laws, and is, accordingly, bound by them. The South African anti-discrimination legislation and international anti-discrimination laws prohibit unfair discrimination, whether it is direct or indirect, or on a listed (that is, a specified ground such as race or disability) or unlisted ground, on a policy, rule or practice. Discrimination based on a listed ground is presumed to be unfair. If discrimination is based on an unlisted ground, the complainant must prove that the discrimination is unfair by applying the Harksen v Lane NO 1997 (11) BCLR 1489 (CC) test. The Harksen v Lane NO test asks whether the discrimination has the attributes and characteristics which have the potential to impair the fundamental human dignity of persons as human beings or to affect them adversely in a comparably serious manner. If the answer is yes, the discrimination is unfair. Mental illness is not a listed ground, meaning it is unlisted. The Labour Appeal Court and Labour Court have, therefore, had to consider whether discriminating against an employee on the basis of their mental illness is unfair, or dismissing them because of their mental illness constituted an automatically unfair dismissal. In the leading case of New Way Motor & Diesel Engineering (Pty)Ltd v Marsland [2009] 12 BLLR 1181 (LAC), the Labour Appeal Court applied the Harksen v Lane NO test and held that the employee’s dismissal was automatically unfair in terms of section 187(1)(f) of the Labour Relations Act. In the recent case of Jansen v Legal Aid South Africa (JA121/2014) [2018] ZALCCT 17, the Labour Court agreed with the Labour Appeal Court decision in New Way Motor & Diesel Engineering (Pty) Ltd v Marsland that dismissing an employee because of their mental illness is automatically unfair in terms of section 187(1)(f) of the LRA, and unfair discrimination in terms of section 6(1) of the EEA. Despite the consistency in case law, the anti-discrimination legislation does not list mental illness as an unfair ground, which means unfairness cannot be presumed. The complainant must, accordingly, prove the dismissal is automatically unfair in terms of section 187(1)(f) of the LRA or that it is unfair discrimination in terms of section 6(1) of the EEA.
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  • Date Issued: 2020

Unpacking the link between adaptive capacity, assets and responses of rural livelihoods facing multiple stressors in the Eastern Cape

  • Authors: Dalu, Mwazvita Tapiwa Beatrice
  • Date: 2020
  • Language: English
  • Type: thesis , text , Doctoral , Ph.D
  • Identifier: http://hdl.handle.net/10962/147103 , vital:38593 , doi:10.21504/10962/147103
  • Description: Thesis (PhD.)--Rhodes University, Faculty of Science, Environmental Science, 2020.
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  • Date Issued: 2020

Unravelling the replication biology of Providence virus in a cell culturebased model system

  • Authors: Jarvie, Rachel Anne
  • Date: 2020
  • Subjects: Virology -- Research , RNA viruses , Viruses -- Reproduction , Providence virus
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/142339 , vital:38071
  • Description: There has been an increase in the number of viral outbreaks in the last decade; the majority of these are attributed to insect-human or animal-human transfer. Despite this awareness, there is limited understanding of the replication biology of the viruses causing the outbreaks and there are few model systems that are available to study RNA virus replication and viral persistence. In this study, we describe a Providence (PrV)-based model system to study virus replication biology. PrV is a single-stranded RNA virus that can cross Kingdom boundaries; it is capable of establishing a productive infection in insect and mammalian cell culture and it is also capable of replicating in plants. Only one other virus has been reported to infect a similar host range - the Nodavirus, Flock House virus (FHV). First, we performed a bioinformatic analysis of the PrV genome and validated the tools that were currently available to work with this model system in mammalian cells. Our data indicate that PrV infection of human cervical cancer (HeLa) cells results in the production of p130, p104/p40 and VCAP, albeit at low levels. While PrV replication in insect cells is associated with the Golgi apparatus and secretory vesicles, in HeLa cells, PrV replication is associated with the mitochondria. It is interesting to note that FHV replication factories are located on the outer mitochondrial membrane. In an attempt to study PrV virus replication in vitro, we adapted the BioID system reported by Roux et al. (2012). Here a promiscuous biotin ligase enzyme (BirA) was fused to a protein of interest and the expression of the fusion protein in mammalian cells resulted in the proximitybased biotinylation of proteins associated with the protein of interest. Using p40 as the protein of interest, we studied the fusion protein (BirA-p40) in transiently transfected HeLa cells and in a stable cell line, using western blot analysis and confocal microscopy. We faced challenges comparing the data collected using the two antibody-based detection techniques and the lack of BirA-p40 detection when using western analysis was attributed to the associated of p40 with detergent resistant membranes. BirA-p40 was subsequently expressed using in vitro coupled transcription/translation reactions, in the presence of excess biotin. While BirA-p40 was robustly expressed under these conditions, biotinylation of BirA-p40 was not detected. We attributed this to the conditions used in the experiments and given additional time, we would extend the duration of biotinylation, in vitro. PrV replication in mammalian cells was detectable using confocal microscopy however the levels of fluorescence were relatively low. The knowledge that p40 was associated with detergent resistant membranes led us to question the impact of detergent treatment of live cells on the detection of PrV replication. PrV-infected HeLa cells were treated with detergents with varying biochemical characteristics and the impact of these treatments on the detection of PrV replication were evaluated. We observed that linear and non-ionic detergents, namely NP-40 and Triton X-100, were most effective at enhancing the detection of viral replication in PrV-infected HeLa cells. Our data confirm that detergent treatment results in enhanced detection, and not enhanced PrV replication, in HeLa cells. Using the stable BirA-p40 expressing HeLa cell line, we showed that the protein is associated with membranes in vitro, and that the enhanced expression of BirA-p40 results in the formation of greater volumes of detergent-resistant membranes. In addition, detergent treatment of unfixed PrV-infected HeLa cells revealed the presence of the PrV p40 protein in the nucleoli of the cells. This is the first report of PrV proteins, which are translated in the cytosol of the mammalian cells, occurring in the nucleus. Our study has resulted in a deeper understanding of PrV replication in mammalian cell lines. A ‘simple RNA virus’ with only three predicted open reading frames has exhibited high levels of complexity within its elegant simplicity. This study has also highlighted the challenges associated with studying RNA virus replication biology in vitro. Looking forward, the identification of detergent-based enhancement for the detection of PrV replication provides the opportunity to perform more targeted PrV replication studies. The PrV-based model system can also be applied to the identification and analysis of potential broad-spectrum antiviral drugs in vitro. The latter application is particularly relevant considering the increase in the number of viral outbreaks over the last decade.
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  • Date Issued: 2020

Unsustainable trade-offs: provisioning ecosystem services in rapidly changing Likangala River catchment in southern Malawi

  • Authors: Pullanikkatil, Deepa , Mograbi, Penelope J , Palamuleni, Lobina , Ruhiiga, Tabukeli , Shackleton, Charlie M
  • Date: 2020
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/176308 , vital:42683 , https://doi.org/10.1007/s10668-018-0240-x
  • Description: Provisioning ecosystem services of the Likangala River Catchment in southern Malawi are important for livelihoods of those living there. Remote sensing, participatory mapping and focus group discussions were used to explore the spatio-temporal changes and trade-ofs in land-cover change from 1984 to 2013, and how that afects provisioning ecosystem services in the area. Communities derive a number of provisioning ecosystem services from the catchment. Forty-eight species of edible wild animals (including birds), 28 species of edible wild plants and fungi, 22 species of medicinal plants, construction materials, ornamental fowers, frewood, honey, gum, reeds and thatch/weaving grasses were derived from the catchment and used by local communities.
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  • Date Issued: 2020

Uphicotho lweencwadi zabantwana ezikhethiweyo eziguqulelwe esiXhoseni

  • Authors: Madolo, Yolisa
  • Date: 2020
  • Subjects: Children's literature, South African , Xhosa fiction -- Juvenile literature , Xhosa language -- Juvenile literature , Translating and interpreting in literature , Xhosa literature , Xhosa language -- Translating
  • Language: Xhosa
  • Type: text , Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/150515 , vital:38981
  • Description: Appraisal of African languages’ children’s literature and its translation seems to be developing at a slow pace. This literary genre seems to be the last on the literary critics’ list. As a result, children’s literature translators seem to do as they please, with no fear that there is someone to critique the work. Translation for children is more than just literary translation, because it is meant for a special audience, whose language skills are still developing. The translator, therefore, needs to be someone dedicated in target language development. This translation needs a translator with a deep knowledge of both the source and target languages and their cultures. This will result in a translation that is readable and acceptable in the target language. The aim of this study was to critically analyse 20 selected isiXhosa translated stories, looking at how they have been translated in order to sound original in the target language. A sample of five stories were taken and analysed looking at their macrostructure. The findings of the analysis were that the isiXhosa stories resembled the English ones. Even the equivalence of the translated versions showed that the translation transferred the message in the source texts. However there were challenges as indicated. The study was done using Skopos theory, which advocates for the translator to always keep their audience in mind. It suggests that the translator should always strive for a translation that is acceptable to the target language. Various strategies can be used by the translator to fulfil this. Some of the strategies found to have been used in the translations are adaptation through omission, addition, addition of target culture specific terms, and changing sentence mode. Generally, the source language message seems to have been successfully transferred to the target language. However, errors in some stories were a cause for concern, as they could deter the target reader’s interest in the stories. Such errors are spelling mistakes, word division errors, incorrect concord use, etc. These errors are a matter of concern in literature, more especially children’s literature where children are still developing their reading skills.
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  • Date Issued: 2020

Uphononongo nzulu lwamasiko nezithethe kwiincwadi ezichongiweyo zesiXhosa: "Ityala lamawele no "Ukuba ndandazile"

  • Authors: Diko, Mlamli
  • Date: 2020
  • Subjects: Xhosa (African people) , Mqhayi, S E K -- Ityala lamawele , Tamsanqa, Witness K -- Ukuba ndandazile , Xhosa (African people) -- Social life and customs , Authors, South African -- 19th century -- Criticism and interpretation , Xhosa (African people) -- Rites and ceremonies , Mqhayi, S E K -- Critisicism and interpretation , Tamsanqa, Witness, K -- Criticism and interpretation , Xhosa literature -- Criticism and interpretation , Xhosa fiction -- History and criticism
  • Language: Xhosa
  • Type: text , Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/145232 , vital:38420
  • Description: Olu phando lujolise ekubhentsiseni nasekuphononongeni nzulu indima yamasiko nezithethe kwiincwadi ezichongiweyo zesiXhosa ezizezi, “Ityala Lamawele” (1914) ibhalwe nguSamuel Edward Krune Mqhayi kunye no “Ukuba Ndandazile” (1967) ibhalwe nguWitness Kholekile Tamsanqa. Amasiko nezithethe aya kuthi aphononongwe ngala: ukulobola, ingqithi nesithembu. Kwakhona, la masiko nezi zithethe ziya kuthi ziphicothwe kugudlwa kwizinto zesiNtu ezinobuzaza eziqhushekwe zaze zancathama phantsi kwawo. Umzekelo, phantsi kwesiko lokulobola kukho izithethe ezithiwe qhushe phantsi kwalo ezifana nokuhota, ukuyalwa komtshakazi nezinye. Zonke ezi zinto ziya kuthi zivelelwe. La masiko nezi zithethe zichongwe kuba kukholeleka into ethi zitshatshele ngokwendima eziyidlalayo kwezi ncwadi zimbini. Ukubalasela kwawo la masiko nezithethe akwaneli ekubeni indima yawo ityhilwe kwezi ncwadi kuphela, koko indima yawo ithi ityhile banzi ngentlalo kaXhosa. Lilonke, aba babhali babini ababhali ngezinto ezingaziwayo okanye ezibuntsomirha, koko babhala ngemiba echaphazela amaXhosa ngqo. Umphandi uya kuthi aqhaqhe iindlela la masiko nezithethe aqhutywa ngazo, iinjongo zokwenziwa kwawo kwakunye neziphumo xa ethe la masiko enziwa okanye angenziwa ngokusesikweni. Konke oku kuya kuthi kwenziwe egameni lobuXhosa bemveli. Umphandi uya kukwenza oku ngeenjongo zokuphicotha nzulu intsingiselo ngokwamasiko nezithethe zamaXhosa ezama ukutyhila obona bunyani bufihlakeleyo bamasiko nezithethe kunye nokuzalana kwawo nentlalo yamaXhosa. Ngaphezulu, kukutyhila into ethi kwaXhosa amasiko nezithethe ziintsika zokuphila, ngako oko ananto ithile ayithethayo kuthi thina maXhosa ungaphiki nje kuba ezakwaLizwi zidungadungile ngendlela yazo kumzi kaPhalo ze zasahlukanisa nezinto zoobawo bethu. Kunamhlanje nje azinqabanga iintetho ezithi ukunqula iminyanya nezinyanya bubuhedeni, ukuxhela ibhokhwe kuyongxengxezwa bubudimoni. Kule ngxoxo, kuya kujongwa isakhono nobuchule bababhali abathe babusebenzisa njengesixhobo sokukhusela inkcubeko yamaXhosa eyathi yabhunyulwa ngamaNgesi yasala nje ibhityile, yiyo ke ngoku le esele igululwa okwamathumbu ngurhulumente wenkululeko. Lilonke, kwa kolu phando kunconywa ababhali abaziingcungela ekubeni basebenzise ulwazi lwabo lolwimi ekukhuseleni inkcubeko yamaXhosa athi xa ahlomla ngayo uMkonto (2005: v) athi: The study of the survival of cultural traditional customs in isiXhosa literature is an overdue task facing literary critics. Le ngcali ingentla apha ihlaba ikhwelo kubaphandi besiXhosa ukuba banyathelele phezulu bephanda bebhentsisa ubunyani bamasiko nezithethe kuncwadi lwesiXhosa. Olu phando, ngaphezu kwazo zonke izizathu, lusabela elo khwelo. Kwelinye icala, uthi uSaule (1996) xa ethetha ngoMqhayi, nangona uMqhayi lo wayenobuhlobo nabefundisi bezakwaLizwi nokhanyo kodwa akazange ayivumele ingqondo nentliziyo yakhe ithwetyulwe ziinkolo neenkcubeko zasemzini. Ukutsho ngokwakhe oku uSaule (1996: 20) xa ahambisa enjenje: Although Mqhayi was obviously a brain child of the missionaries, he did not, unlike many writers at that time, allow their influence to engulf his thoughts. He uses a Bible as a technique rather than as an instrument that guides him towards predestined objectives. Le ngcinga kaSaule ingentla igxininisiwe kwilixa elingaphambili nguDikeni (1992: 12) xa wayesithi: It is clear that Mqhayi as one of the early writers could not address the political situation of the South Africa directly in his novel. He had to use an extended metaphor to avoid the strict laws of censorship. This he did by using a Biblical story and adapting it to his culture. Ngokwezi ngcali zimbini, kuyaqapheleka ukuba nangona uMqhayi lo ifuthe laseNtshona lazama kangangoko linako ukumthwebula kodwa ukuhlakanipha kwakhe kwamenza wagwencela okwesikhwenene kwiingcambu zakhe, kwisizwe sakhe, kumasiko nezithethe zakwaXhosa. Kungani ke ukuba singangamphakamiseli phezulu lo mbhali ngokuthi simane sindwendwela iimbalo zakhe sihlaba sikhangela ukuba zithetha ukuthini na kuthi sizwe sikaXhosa xa sikule ndawo sikuyo nje? Kwelinye icala, uMkonto (2005) umqhwabela izandla uTamsanqa xa athi nangona wayefundile akazange ayivumele imfundo imntywilisele eludakeni lwaseNtshona hleze buthi obu buncwane bezi ncwadi zakhe zifana no “Buzani Kubawo” (1958), “Ukuba Ndandazile” (1967), “Imitha Yelanga” (1967) kunye nezinye zaziya kufela engqondweni yakhe engakhange afundise umzi kaXhosa ngobuXhosa bawo. UMkonto (2005: 17) uhambisa athi xa ethetha ngoTamsanqa: Most of his experiences which he shared with people at the time were of hardships ... probably these were some of the experiences that triggered the themes expressed in ‘Buzani kubawo’ and ‘Ukuba ndandazile’ Ngokwala mazwi angentla, okona kuncomekayo ngoTamsanqa kukuba uthe nokuba sele ehlangabezana neenzingo zobomi kodwa wabona kukuhle ukuba afundise umzi kaXhosa ngaloo mahla ndinyuka kuba kakade lisiko kwaXhosa into yokuba xa uye wagileka endaweni ethile uze ufundise abanye ukwenzela ukuba bangangeni kulaa mgibe ubuwele kuwo. Bubuntu ke obo. Ubukhulu becala bezinto athe wadlula kuzo uTamsanqa zicazululwe kwisahluko sesibini esidandalazisa ubunzululwazi mlando mbali wobom ngababhali. Okunye, uTamsanqa sesinye sezizukulwana esathi saneTamsanqa lokukhula ngeliya xesha amasiko nezithethe kwaXhosa bezisaqhutywa ngendlela encomekayo kunangoku, kodwa umfundi makaqaphele ukuba umphandi akazami kuthelekisa amaxesha amasiko nezithethe ezaziqhutywa kodwa ubona kubalulekile ukuba icace inkolelo ethi amasiko nezithethe namaxesha awayeqhutywa ngawo awasafani. Kolu phando nzulu okunye okuphambili kukuthi nangona aba babhali babini bathi basebenzisa ulwimi oluntsokothileyo nezagwelo zokubhala ezifihlakeleyo ngendlela enomkhitha kodwa loo nto ibe lulutho kumzi kaPhalo kuba ushiyeke ufumbethe ulwimi lwesiXhosa. Ngaphezu koko amaXhosa ashiyeke efumbethe ulwazi ngamasiko nezithethe ekusafuneka efundisiwe. Ingcambu yolu phando ke ingamasiko nezithethe kusetyenziswa isiThako samaSiko neziThethe esiza kuchazwa banzi kwimihlathi engezantsi. Ngaphandle kokuphonononga nzulu intsingiselo yamasiko nezithethe, olu phando lukwayinkuthazo kwabanye ababhali ukuba bazeke mzekweni benjenjeya ukuzalisa umphanda kaXhosa ngamasiko nezithethe kunye nolwimi olusulungekileyo khona ukuze izizukulwana ngezizukulwana zibe nento yokufunda. Ukongeza, kukukhuthaza abo babhali baneembalo ezintlakekileyo nezibutenxarha ngokwamasiko nezithethe, nolwimi ke, ukuba baziqhelanise nokufunda iincwadi zesiXhosa, bafunde isiXhosa, baphande ngokuzinikela ngemiba yesiXhosa. Njengamntu mtsha, olu phando lukhuthaza olunye ulutsha ngokubaluleka kokulondolozwa kwenkcubeko ukuze isizukulwana esizayo sibe nokufunda kuyo. Uphando olu lujolise ekukhuliseni iimbalo zesiXhosa ingakumbi ke xa sele lubhalwe ngesiXhosa. Likho iqaqobana elibhalileyo ngesiXhosa kodwa ezinye zezo mbalo ziyakhwinisa ngenxa yegrama etenxileyo, umgangatho ophantsi wokusetyenziswa kolwimi ukunonga iintetho, nezinye iziphene. Masibe sisithi ziinzame ekukhucululeni nasekuphuculeni oko kwenziwa ngabeLungu; masingaligxeki kakhulu elo gcuntswana. Enye yezinto ezikhwinisayo kuluncwadi lwesiXhosa kukunqongophala kweencwadi ezibonisa isiNtu sethu ngendlela egqibeleleyo nemsulwa. Iyathuthumba into yokunqongophala kweencwadi ezingembali yethu ebhalwe sithi. Oku kunqongophala kufika kube negalelo elibi kubafundi neetitshala zesiXhosa ezona kufuneka zingcamle ubuncwane benkcubeko yazo kunye nabafundi jikelele. Iincwadi eziya kuthi zisetyenziswe zezo zababhali abaziinjojeli kubhalo lwesiXhosa, uS.E.K. Mqhayi noW.K. Tamsanqa. Isizathu soko asikokuba umphandi uzama ukuthelekisa ababhali koko uya kubachonga, okokuqala, ngenxa yokuba bengababhali abaphume izandla kuncwadi lwesiXhosa. Okwesibini, kunconywa ubuchule babo ekusebenziseni ulwimi nesakhono njengesixhobo sokuphakamisa umgangatho woncwadi lwesiNtu ngokuyeleleneyo namasikonezithethe. Okwesithathu, iimbalo zabo zezinye zeembalo ezithe zaphakanyiswa kakhulungabaphandi de zafumana amawonga ngamawonga. Okwesine, kudederhu lweencwadizesiXhosa ezingaka andinokwazi ukuthi ndilume umthamo omkhulu endizojika ndixakane nawo ndingakwazi ukuwuhlafuna ndiwucokisise hleze ndomiwe emqaleni ndingabisalugqiba kwa olo phando.
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  • Date Issued: 2020

Upwelling on the Southeast Madagascan shelf: frequency, extent, and driving mechanisms

  • Authors: Collins, Matthew
  • Date: 2020
  • Subjects: Upwelling (Oceanography) -- Madagascar , Oceanography -- Research -- Madagascar Marine biology -- Indian Ocean
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/49060 , vital:41597
  • Description: The southeast coast of Madagascar, namely the region surrounding the town of Fort Dauphin, is an area that regularly experiences upwelling events. Two unique high frequency data sets, UTR data, and wind data retrieved from a nearby airport, are the primary data sets used to investigate the nature of the upwelling, i.e. the area that experiences upwelling, how often it occurs, and its mechanisms. To complement the in-situ data, several different satellite data sources are used alongside the in-situ data to study this relatively remote region, i.e. SST, chlorophyll-a concentration, current, and wind data. The results refine upon previous literature on the topic. The upwelling covers an area of 1o latitude by 1.3o longitude, and occurs on average 14 times per annum. The mechanism driving the upwelling can be attributed to both wind and current, with wind the more dominant driver along the south coast, and current more dominant along the east coast. Separate to the main objective of the thesis is the importance of in-situ data when analysing small scale events such as upwelling events. While the in-situ wind data were found to be unreliable due to its location within a valley, the UTR data were of vital importance in identifying and studying the finer details of the upwelling events. The satellite SST data, by comparison, were lacking in their ability to investigate the upwelling events. The satellite derived wind data, however, did prove useful when analysing the wind as a driver of the upwelling.
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  • Date Issued: 2020
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