Changes and continuities in the labour process on commercial farms in post-Apartheid South Africa : studies from Eastern Cape and KwaZulu-Natal Provinces
- Authors: Kheswa, Nomzamo Sybil
- Date: 2014
- Subjects: Agricultural laborers -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- KwaZulu-Natal , Agricultural wages -- South Africa -- Eastern Cape , Agricultural wages -- South Africa -- KwaZulu-Natal , Eastern Cape (South Africa) -- Rural conditions , KwaZulu-Natal (South Africa) -- Rural conditions , Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions , Agricultural laborers -- South Africa -- KwaZulu-Natal -- Social conditions , Agricultural laborers -- Legal status, laws, etc. -- South Africa -- Eastern Cape , Agricultural laborers -- Legal status, laws, etc. -- South Africa -- KwaZulu-Natal , Apartheid -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3366 , http://hdl.handle.net/10962/d1011978 , Agricultural laborers -- South Africa -- Eastern Cape , Agricultural laborers -- South Africa -- KwaZulu-Natal , Agricultural wages -- South Africa -- Eastern Cape , Agricultural wages -- South Africa -- KwaZulu-Natal , Eastern Cape (South Africa) -- Rural conditions , KwaZulu-Natal (South Africa) -- Rural conditions , Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions , Agricultural laborers -- South Africa -- KwaZulu-Natal -- Social conditions , Agricultural laborers -- Legal status, laws, etc. -- South Africa -- Eastern Cape , Agricultural laborers -- Legal status, laws, etc. -- South Africa -- KwaZulu-Natal , Apartheid -- South Africa
- Description: This thesis examines the agricultural labour process on commercial farms in post-apartheid South Africa with a particular focus on systems of labour control on these farms. Considerable literature exists about the labour process in capitalist society but the capitalist labour process does not exist in any pure form. Rather, different labour processes exist and the specific form they take depends on spatial and temporal conditions. Additionally, labour processes are often economic sector-specific. Because of variation in capitalist labour processes, differences in systems of labour control (or labour control regimes) also arise. Historically, up until the end of apartheid in 1994, the labour control regime on commercial farms in South Africa was marked by a paternalistic despotism of a racialised kind. This in part reflected the fact that commercial farms were simultaneously sites of both economic production and social reproduction and, further, they were very privatised agrarian spaces largely unregulated (specifically with regard to labour) by the state. Since the end of apartheid, commercial farms have been subjected to multiple pressures. Notably, the South African state has strongly intervened in labour relations on commercial farms, and commercial farms have been subjected to ongoing neo-liberal restructuring. This has led to the prospects of changes in the prevailing labour control system on commercial farms. In this context, the thesis pursues the following key objective: to understand changes and continuities in the labour process on commercial farms – and particularly labour control systems – subsequent to the end of apartheid in South Africa. It does so with reference to four farms in Eastern Cape and KwaZulu-Natal Provinces.
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- Date Issued: 2014
The design of a new passenger terminal for Durban Harbour
- Authors: Tyson, Dave
- Date: 2014
- Subjects: Harbors -- Design and construction Harbors -- South Africa -- Durban -- Design and construction
- Language: English
- Type: Thesis , Masters , MArch
- Identifier: http://hdl.handle.net/10948/38975 , vital:35016
- Description: Cruise holidays from Durban Harbour to Mozambique and Mauritius have been popular for many years but have increased dramatically in recent years. Due to the encroaching industrial development of the terminals location, the experience of arrival to the current passenger terminal is one of being exported (human trafficking), as opposed to that of going on holiday. This image is enhanced by passengers sitting on cheap plastic chairs while they wait for their number to be called. After which they journey through a series of makeshift partitions before standing in front of a photograph of the ship to have a photograph taken. This causes a rather depressing boarding process and the traveller only begins to experience the holiday vibe once on board the ship.
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- Date Issued: 2014
Using a mobile pill reminder to support medication compliance in South Africa
- Authors: Mukandatsama, Cainos
- Date: 2014
- Subjects: Mobile apps -- South Africa , Mobile computing -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/4889 , vital:20719
- Description: This project investigated how to develop a mobile intervention to support medication compliance for patients with chronic and acute diseases. Chronic diseases cannot be cured but can be controlled, usually by taking medication every-day. Therefore, it is very crucial for a patient with a chronic disease to take their medication on time to prevent complications or negative impact on their health. Due to the widespread use of mobile phones, having an automated mobile mechanism to remind patients to take medication is regarded as an effective way of supporting medication compliance. The focus of the research was on investigating how mobile health applications can be used to support patients with chronic and acute diseases in South Africa. Literature identified that medication compliance is low and that a need exists for an intervention to increase compliance. The main goal of this research was to produce a mobile health application to assist medication compliance and support patients with chronic and acute diseases in South Africa and investigate its perceived usefulness. The project made use of two field studies to substantiate its results. The first field study involved patients with chronic diseases and the second one involved patients with acute diseases. The feedback from the first field study and from a literature review was used to redesign the mobile application. The project also investigated the attitude of patients taking medication over a short period of time as well as how such patients compared with those taking chronic medication. The project identified the benefits and disadvantages of using an m-health application to support medication compliance based on the participants’ feedback and behaviour observed in using the application.
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- Date Issued: 2014
Engaging within zones of proximal development on Facebook : the case of using Facebook to support learning and mentoring on a NQF Level 5 environmental education, training and development practices learnership
- Authors: Chetty, Preven
- Date: 2015
- Subjects: Social media -- Study and teaching (Higher) -- South Africa , Internet in education , Online social networks , Organizational learning , Employees -- Training of , Group work in education
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:2024 , http://hdl.handle.net/10962/d1017335
- Description: This study focuses on two roll-outs of a, year-long National Qualification Framework (NQF) level 5, environmental education learnership in South Africa and attempts at enhancing collaborative learning at workplaces using a familiar social networking site called Facebook. This study uses the Facebook group sites created for the workplace course component of the course as one of the means of data collection. Additional interviews and focus groups with learners and administrators on both Environmental Education Training and Development Practices (EETDP) courses also informed the study. The study is located within the context of the rise of the information age, its effects on socio-ecological landscape at large and ways of using social networking sites in order to facilitate scaffolding and meaning making within zones of proximal development for environmental education learnerships. It also looks at the model of apprenticeship and workplace based learning as it is broadly located at the nexus of the SAQA-led academic inquiry into workplace based learning and professional development. It was found that the use of Facebook on the EETDP learnership allowed for collaborative learning to take place between peer to peer interactions as well as between tutors and learners. It was also noted that scaffolding processes requires both technical assistance and strong instructional input from course tutors. One of the most important findings in terms of collaborative learning and engaging within the Zone of Proximal Development (ZPD) was that learners were able to communicate more effectively and freely with both fellow learners and tutors on course after participating on the Facebook group sites. The study offers recommendations on how a social networking platform like Facebook can be utilised effectively for environmental education. The study recommends that scaffolding of workplace based tasks and concepts needs to be better integrated with the course and in both online and offline interactions between learners. It also illustrates how social networking sites can become powerful tools for creating meaning making when combined with course work.
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- Date Issued: 2015
Forest governance, conservation and livelihoods: the case of forest protected areas and local communities in north-western Zimbabwe
- Authors: Mutekwa, Vurayai
- Date: 2017
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/7396 , vital:21254
- Description: Forest protected areas (FPAs) constitute one of the main strategies for achieving the triple benefits of biodiversity conservation, livelihoods sustenance and climate regulation. The quality of FPA governance plays a major role in the achievement of these conservation objectives. Governance encompasses policies, institutions, actors, processes and power and how they interplay to determine conservation outcomes. Currently, no research has systematically explored the historical and contemporary governance of Zimbabwe’s protected indigenous forests and its implications on forest condition and local communities’ livelihoods. This is despite the fact that improving forest governance depends on learning from those that prevailed in the past as well as those currently obtaining on the ground in terms of how they have performed in relation to conservation and livelihood sustenance. This study assessed Zimbabwe’s historical and contemporary FPA governance and its implications on social and ecological outcomes. The overall rationale of the study was to provide evidence of the impact of past governance arrangements on forest condition and local communities’ livelihoods, improve understanding of the current governance arrangements and propose future FPA governance strategies and mechanisms to enhance conservation and local communities’ livelihood outcomes. Accordingly, the specific objectives of the study were to: 1) characterize and collate historical governance of FPAs in western Zimbabwe, 2) evaluate the impact of governance on forest condition and local communities’ livelihoods, 3) explore the nature of contemporary governance at the forest level, and 4) propose the governance model for Zimbabwe’s FPAs into the future. The study employed a combination of quantitative and qualitative data collection and analysis methods including the systematic literature review methodology. Using specific case studies of indigenous FPAs in western Zimbabwe as examples, the study initially evaluated through literature review (Chapter 2) the history of forest governance in Zimbabwe showing how four main powers (force, regulation, market and legitimation) led to different types of local community exclusion and how community agency countered exclusion especially from the year 2000 to date. Chapter 3 uses six case study forests to assess the quality of historical FPA governance by analyzing the application of seven governance principles. The results showed that the quality of governance was high during precolonial times, deteriorated with the inception of colonialism and remained poor after independence in 1980. Forest condition also varied in tandem with the quality of governance variations showing a positive relationship between the two variables. Participation in decision making, fairness in sharing benefits and effective rule enforcement emerged as key principles for FPA authorities to earn local community support and improve forest condition. Chapter 4 employed remote sensing techniques to determine the impact of governance on FPA land cover change by comparing FPAs with in situ and ex situ inhabitants. Results revealed that there was a significant relationship between governance quality and land cover change. FPAs with in situ inhabitants experienced higher forest loss than those with ex situ inhabitants. Poor governance accelerated forest conversion to other land uses particularly agriculture and settlement. Chapter 5 explored contemporary FPA governance at the forest level. Results showed that human agency that led to the invasion of FPAs from the year 2000 onwards disrupted the governance arrangements that were previously in place subjecting Zimbabwe’s FPAs to near open access by local communities and other actors. The FPAs’ contemporary governance is characterized by involvement of multiple actors with diverse interests, lack of Forestry Commission legitimacy, very low levels of local people’s participation in decision making and rule enforcement, lack of compliance with FPA rules and actual benefits that do not match local communities’ expectations. Overall, the study has revealed the ineffectiveness of the conventional centralized FPA governance in achieving positive conservation and local communities’ livelihoods outcomes. The study recommended a shift from conventional centralized governance to pro-people adaptive collaborative management (ACM). This has the potential to address most of the governance ills affecting Zimbabwe’s FPAs if it is designed and implemented with the full commitment of all relevant actors. This governance approach should, however, avoid some of the pitfalls such as elite capture, corruption in benefit sharing, gender inequality and technocratic professional management approaches that have characterized some collaborative governance systems in developing countries further perpetuating marginalization and poverty amongst local communities. Forestry Commission must also exercise visionary leadership and motivation. ACM becomes possible through leadership, vision, establishment and maintenance of links through culture and management and high levels of motivation. Designing and implementing ACM avoiding the highlighted pitfalls improves the capacity of the FPAs to continue providing social and ecological benefits such as improvement of local communities’ livelihoods, biodiversity protection and climate change mitigation.
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- Date Issued: 2017
The intent by black professionals to leave private sector organisations in the Nelson Mandela Bay
- Authors: Moruri, Thabiso Vincent
- Date: 2017
- Subjects: Professional employees -- South Africa -- Port Elizabeth Employee loyalty -- South Africa -- Port Elizabeth , Employee retention -- South Africa --Port Elizabeth Labor turnover -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/19201 , vital:28787
- Description: Since the dispensation of the democracy in 1994, the South African labour market has been inclusive to the race that previously was excluded in certain positions in the private sector. Black professionals, managers and senior managers have since increased in the market and they became in demand due to the introduction of the Equity laws by the government of South Africa. The purpose of this study was to investigate the reason why black professionals do not stay or develop loyalty with the private sector organisation that employ them within the Nelson Mandela Bay region. Factors that could affect the reason to stay or not with these private organisations were identified and researched. These factors are, Employment Equity, Career Development, Diversity Management, Trust, Transformation and Management Style. Literature review on the views of scholars about these factors was done. A questionnaire to investigate these factors was distributed to black professionals that still work for the private organisations in the Nelson Mandela Metro and to the ones that opted not to stay. Interviews were also conducted with the professionals that are specialists in the field of human resources. The following are the main findings of the study. Racial prejudice towards black professionals is evident in these organisations. There is lack of equity and affirmative action is not implemented properly, which assists in the decision not to stay with these organisations. Career development is determined by race, meaning those who are developed are chosen by their race. The lack of career development is also perpetuated by the lack of proper strategies and the respondents feel that these strategies need to be reviewed. The lack of career development also contributes to the decision whether to stay or not. Trust between the black professionals and their superiors is not a problem. The black professionals are happy with how their superiors support them and how they reward them. Racial discrimination plays a role in the superior’s ability to manage diversity and this also contributes in the decisions whether to stay or not with private organisations. The lack of the diversity management influenced by racial prejudice, gives enough reasons to the black professionals to leave the organisations. Lack of transformation is evident. It seems that black professionals are only given manager or senior manager positions only to comply with the laws of the country. The respondents seemed to be happy with the management style of their superiors.
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- Date Issued: 2017
Uphononongo ngokobunzululwazi bume-ntlalo befuthe lasentshona kule mihla kwiincwadi zedrama: ekaqangule esihloko sithi “amaza” nekatamsanqa ethi “buzani kubawo.”
- Authors: Somkebe, Pindo Cynthia
- Date: 2017
- Subjects: Xhosa drama -- Criticism and interpretation Xhosa literature
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/20844 , vital:29406
- Description: Umba wokuguquka kwamaxesha nefuthe laseNtshona kudale uqhankqalazo, ungquzulwano novukelwano oludale unxunguphalo phakathi komzali nomntwana wakhe. Olu phando lugxile kakhulu kwincwadi kaTamsanqa ethi ‘Buzani kubawo’ nekaQangule ethi ‘Amaza’. Kuyafumaniseka ukuba ungquzulwano kwezi Drama zimbini lwenziwe kukudibana kwenkcubeko yaseNtshona neyemveli, zangquzulana. Abalinganiswa bamacala omabini baye banezinye iingqondo ezingahambelaniyo nelinye icala. Abalinganiswa abaziintloko bezi Drama zombini (ulutsha) bakholelwa kwinkcubeko yaseNtshona, babe abazali babo bona bekholelwa kwinkcubeko yemveli. Naxa abantu benkcubeko yemveli babeqhubeka nenkcubeko yabo yemveli, babengayithandi inkcubeko yaseNtshona eyamkelwe ngabantwana babo, ebenza ukuba bayijongele phantsi inkcubeko yabo yemveli. Apha ndizama ukuveza ukuguquka kwamaxesha ngenxa yefuthe laseNtshona okudale uqhankqalazo, ungquzulwano novukelwano phakathi komzali nomntwana nendlela oku kudala ngayo iyantlukwano ekuhlaleni naphakathi kwesizwe siphela. Oku kuza kwenziwa ngokuthi kuphononongwe nzulu ezi ncwadi zimbini zeDrama nendlela aba babhali abawudalance ngayo lo mcimbi wolu qhankqalazo. Ezinye izinto endiza kuziveza ziindlela zokuthetha ezithi zisetyenziswe ngabalinganiswa. Oku kwenziwa ngokuthi kugxeleshwe kakhulu kumagama nesigama esisetyenziswe ngaba babhali ukuzama ukuphuhlisa umxholo wabo. Unobangela wolu ngquzulwano kukuba abantu abadala abakholelwa kwinkcubeko yemveli bafuna ukuqweqwedisa abantwana abakholelwa kwinkcubeko yaseNtshona ukuba mabatshate ngenkani nabantu abangabathandiyo, nto leyo edale isiphelo esingekho sihle nokuphalala kwegazi kwezi Drama zimbini. Ngokuthe ngqo, ngokokucinga kwam, inkcubeko yaseAfrika ibonakala ikhuthaza ukuba ootata babenamalungelo angentla kwawoomama abashiyeka bona becinezelekile. Intwazana enguThobeka kuBuzani kubawo noNamhla kuAmaza bavezwe njengamaxhoba engcinezelo yamadoda xa bezibona sele begaxeleka emitshatweni namadoda abangawathandiyo. UThobeka utshatiswa noGugulethu angamaziyo ngenkani kuBuzani kubawo kanti uNamhla yena utshatiswa noSidima angamfuniyo, yena ezifunela uLizo wakhe kuAmaza. UThobeka uzibona ethobela abazali bakhe ngokuhamba aye eMthatha kuGugulethu ongamfuniyo kanti uyokuzibulalisa ngale ndoda kunye nabantwana athi ngabakhe. UNamhla kwelinye icala uthandana noLizo amthandayo ngoku angumfazi kaSidima, utshata noSidima ngomsesane abesele ewunikwe nguLizo. Unesibindi sokungenisa uLizo entangeni engekatshati kanti nangoku sele etshatile akayekanga ukungenisa uLizo apha kwaSidima. Apha ndiza kuveza uluvo lweengcali malunga neenkcubeko ezahlukileyo, unobangela wolu ngquzulwano neendlela ezinokwenziwa ukuthintela oku kungquzulana kule mihla siphila kuyo. Ukuqukumbela, isiphelo esibi sabalinganiswa senziwe kukunganyamezelani kwabantu abadala nabantwana benyanzelwa ngenkcubeko yemveli abangayifuniyo. Kuyinyaniso kona ukuba ngenxa yeenguqulelo ezininzi ezenzekileyo kweli, nezithe zalitshintsha ngokupheleleyo eli lizwe, uphando olutsha ngale miba lunganegalelo elikhulu. Ngoko ke, esi sifundo sigxile ekuphandeni nzulu ngendlela ephuhliswe ngayo le miba kwezi ncwadi zeDrama zimbini. Ababhali beethiyori ezahlukileyo ezisetyenziswe ekuhlalutyeni kolu phando benze kwakwazeka ukuchaza ngale miba yongquzulwano ngokunxulumene noncwadi. Inkcubeko ibonakala ingunozala nonobangela wendlela ubuni nongquzulwano obuthatyathwa ngayo ngabantu kwiintlanga zonke.
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- Date Issued: 2017
Parental involvement in homework of rural combined schools in the King William's Town Education District
- Authors: Mbembeni, Malixole Ivan
- Date: 2018
- Subjects: Education -- Parent participation -- South Africa
- Language: English
- Type: Thesis , Masters , Education
- Identifier: http://hdl.handle.net/10353/9940 , vital:35152
- Description: While parental involvement in homework is significant, few parents are able to assist in rural communities. The purpose of this study was to investigate the way parents and/or caregivers in rural communities are involved in the homework of their children. The main question was to find how parents in rural communities get involved in homework. The study adopted an interpretive paradigm, a qualitative approach, and a case study design to guide data collection and interpretation. Data was collected in two public combined schools in the King William’s Town District of the Eastern Cape Department of Education (ECDoE). One-on-one semi-structured interviews were used to collect data from parents, educators and principals whilst focus group interviews were used with learners. Documents were collected for background context of the schools. Documents collected include the school journals, learner portfolios, staff establishment, and school timetable. Schools were chosen purposefully because of their rural context and convenience to the researcher. Purposive sampling was also used in the selection of participants. To enhance the trustworthiness of the study, data sources were triangulated, participants were allowed to use their own language, data was mechanically recorded and transcribed and verbatim quotes were used in analysing data. The study found that all participants in both schools supported the need for parents to be involved in homework. Educators, largely, had a pessimistic view about parents; they felt that the parents do not meet their expectations in terms of assisting learners with homework. The study found that although parents see the need for their involvement in homework, in reality they are not always involved. Those parents who are able to assist with homework use a variety of strategies like assisting with the actual homework, referring their children to those who can assist, monitoring and supervising, assisting financially, and organising infrastructure. The study also found that there are several challenges facing parents in rural communities that hinder them from assisting optimally. These include negative attitude towards homework, lack of subject knowledge, irresponsibility, lack of finances and material resources, community commitments, not having enough time, family responsibilities, lack of commitment by learners, and homework overload. These challenges suggest that many parents in rural communities may not be able to provide the necessary leadership for modelling purposes to learners. This can be attributed to several exogenous and exogenous factors that have an impact on homework completion by learners. This study, in addition, found that participants have a good sense of what can be done to improve parental involvement in homework. These include the revival of Adult Basic Education (ABET), the need for integrated efforts by Non-Governmental Organizations (NGOS), government departments, schools, and community organizations to improve infrastructure in rural communities, have awareness campaigns on the significance of parental involvement, provision of access to Information Communication Technology (ICT), establishment of homework support groups and quiz clubs, provision of incentives for parental assistance, and reduction of child labour.
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- Date Issued: 2018
Application of some missing data techniques in estimating missing data in high blood pressure covariates
- Authors: Odeyemi, A. S
- Date: 2019
- Subjects: Missing observations (Statistics) Hypertension
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15189 , vital:40195
- Description: Cases recorded with high blood pressure are a major concern in both public and private hospitals. Adequate provision of health information of patients relating to high blood pressure in Eastern Cape Hospitals hinges so much on the outcome of statistical analysis results. The usual statistical methodologies become inadequate in handling statistical analysis of data collected due to incomplete patients’ information stored in the hospital database. From time to time, new methods are developed to address the problem of missing data. High blood pressure is linked to a lot of diseases such hypertension, cardiovascular disease, kidney disease and stroke. In this study, we developed a new method for addressing the problem of missing data in assessing model used for estimating missing values in terms of minimum errors(using RMSE, MAE, and SE) and goodness-of-fits(using 2 R and adjusted 2 R ) of this model and P-value. . The study compared six different methods: Original data (OD), Listwise deletion (LD), Mean imputations (MEI), Mean above (MA), and Mean above below(MAB) and two steps nearest neighbour (2-NN).The comparison was performed using original data set, and missing values at 5%, 10%, 20%, 30% were simulated on Framingham risk scores under MCAR and MAR simulation on BMI values given some assumptions. Five performance indicators were used to describe the model minimum errors and goodness of fit for all the methods. The results showed that the 2-NN is the best replacement method at lower levels (5% and10%) of missing values while MA and MEI performed best at higher levels(15% and 20%) of missing values. All comparison was based on estimates closest to those of the original data where no value was missing. MAR results showed that 2-NN performed better than LD,MA,MAB, and MEI at 5%,10%, and 20% levels of missing data in terms of absolute difference in p-value to original data.
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- Date Issued: 2019
Epibenthic biodiversity, habitat characterisation and anthropogenic pressure mapping of unconsolidated sediment habitats in Algoa Bay, South Africa
- Authors: Truter, Hannah Jessie
- Date: 2019
- Subjects: Aquatic ecology , Marine sciences Conservation biology Ecology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/43812 , vital:37049
- Description: Implementation of an ecosystem-based management approach for marine systems requires a comprehensive understanding of the biophysical marine environment and the cumulative human impacts at different spatio-temporal scales. In Algoa Bay, South Africa, this study describes the epibenthic communities occurring in unconsolidated marine habitats. It further investigates the potential abiotic factors that influence their distribution and abundance, compares epibenthic communities with existing habitat information and evaluates the protection status of the marine environment in the Bay. Seabed imagery, covering a total area of 171.4m², and sediment samples were collected from 13 stations from which 106 epibenthic species were identified. Multivariate analyses revealed two statistically distinct communities that did not align with the Algoa Bay benthic habitat types defined in the current National Biodiversity Assessment (NBA, 2012). Further assessment indicated that community differences were driven by the presence of rock substrate. A range of abiotic factors were tested against the epibenthic communities to explore patterns and identify potential drivers. The combination of abiotic factors depth, mean grain size, mean bottom temperature and mean bottom current explained 55% fitted variation in epibenthic data. The degree of long-term variability in several of these parameters were likewise identified as explanatory variables, including bottom temperature, current speed and dissolved oxygen. The link between abiotic factors and the epibenthic communities observed indicate that these variables can act as surrogates for habitat mapping in the future. The existing and proposed Marine Protected Area (MPA) in conjunction with the NBA 2012 habitat types does well in protecting the majority of habitats in the Bay, however there remain habitats that lack protection. Utilising the benthic communities and potential drivers identified in this study, the proposed MPA boundary delineations should be somewhat altered to include missing habitat types.
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- Date Issued: 2019
Perceptions of climatic change and food insecurity: a case study of Buhera District, Eastern Zimbabwe
- Authors: Mashiri, Martin
- Date: 2019
- Subjects: Food security
- Language: English
- Type: Thesis , Masters , MSoc (Rural Development)
- Identifier: http://hdl.handle.net/10353/16287 , vital:40706
- Description: The world is experiencing strange weather conditions which have, arguably not been experienced before. Some parts of the world are experiencing severe drought, other parts are receiving above normal rainfall associated with violent cyclones. The changing environmental conditions are perceived by environmental scientists as the consequences of climatic change that has been triggered by global warming which has been largely attributed to an increase of greenhouse emissions due to human activities such as transportation, industry and energy production. Sub-Saharan Africa contributes the least greenhouse gas emissions in the world but it is unfortunate that the region is suffering most from the perceived impacts of climatic change. The region has been experiencing prolonged drought conditions that have negatively impacted food production and it is projected that millions will suffer malnutrition and starvation in future if the perceived causes of climatic change are not addressed. This research seeks to make an in-depth analysis on the perceptions of climatic change and food insecurity in Buhera district east of Zimbabwe. The researcher used interviews and observations to gather firsthand information from a diverse number of participants. The findings of this research largely drew upon the Sustainable Livelihood Framework as a lens for interpretation. The results of this research indicate that there is less food available in Buhera due to poor crop production; perceived to be as a result of the changing climate
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- Date Issued: 2019
Records Management Programmes at the Walter Sisulu University, in South Africa: Case Study of Nelson Mandela Drive Campus
- Authors: Giba, Nozipho
- Date: 2019
- Subjects: Records -- Management
- Language: English
- Type: Thesis , Masters , M.LIS
- Identifier: http://hdl.handle.net/10353/17575 , vital:41098
- Description: The main aim of this study was to investigate the status of records management programme at Walter Sisulu University (WSU) using the Nelson Mandela Drive Site of Mthatha Campus. In carrying out this study, four research objectives with thirtyseven (37) research questions were posed. Purposive Sampling was employed to sample 30 Administrative support staff. The instruments used for data collection were questionnaire and face to face interview. Twenty-nine (29) questionnaires out of the thirty (30) returned completed and five senior managers were interviewed face to face. Descriptive statistic was used to analyse the research questions on the questionnaire and thematic approach was used for analysing the response from the interviews. The major findings of the study revealed WSU fell below the requirements in terms of records management programme on maintaining records that document its business activities. Inadequate infrastructure, inadequacy regarding the desirable control of WSU records at each stage as required by the records life cycle framework was also found to be inadequate and limited knowledge of legal requirements regarding records management. Based on these findings, the following recommendations were made. Effort should be made to implement a Centralised control of Decentralised Registry System (Integrated Registry System), provision of training of staff, as well as proper infrastructural facilities.
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- Date Issued: 2019
Synthesis and characterization of MXS (M = Mo & V) and carbon supported MXS nanocomposites as Pt-free counter electrodes for electrode for DSSC application
- Authors: Bede, Asanda
- Date: 2020
- Subjects: Voltammetry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/18599 , vital:42612
- Description: It has been reported that the morphology, crystalline phase composition and electrochemical properties of counter electrode materials such MxS (Mo, V) and carbon supported MxS (Mo, V) composite nanomaterials was of considerable importance because it governs the efficiency of many photon assisted chemical and physical reactions in dye sensitized solar cells (DSSCs). The efficiency of DSSCs with composite counter electrode materials is reliant on the stability of the photochemistry reactions which can be optimized by appropriate doping levels of the composite materials. Moreover, the microstructure such as surface area, distribution of the MxS (Mo, V) and carbon supported MxS (Mo, V) composite nanomaterials, and the stability of the electrostatic bonds between the MxS (Mo, V) with the carbon support also play a significant role in the performance of the DSSCs. This work evaluates the effect of different mole ratios of the MxS (Mo, V) and carbon supported MxS (Mo, V) composite nanomaterials on the morphological, structural and electrochemical properties of the composite materials. MoS2 nanoflakes nanostructures have been synthesized by hydrothermal technique using sodium orthovanadate (Na2MoO4) as precursor. In this work Carbon supported MoS2 NFs have been prepared by physically/chemically mixing different mole ratios of MoS2 NFs with multi-walled carbon nanotubes (MWCNTs) and polyvinylidene in N-methyl-2-pyrrolidinone. The morphological, structural and electrochemical properties of the composite counter electrode materials have been investigated using SEM, XRD FTIR, TEM, RS and CV. SEM analysis has revealed the presence of large MoS2 nanoflakes (NFs) as synthesized. SEM analysis has also revealed significant change in the surface morphology of carbon supported MoS2 composite nanostructures with the change in the mole ratio of the MoS2 NFs and carbon support multi-walled carbon nanotubes. Structural analysis through HRTEM analysis revealed a d-spacing of 0.65 nm with a corresponding (002) lattice plane belonging to a trigonal crystalline phase of MoS2. Also, HRTEM analysis has revealed d-spacing of 0.291 nm corresponding to 002 plane of MWCNTs. Raman spectroscopy has revealed Characteristic Raman vibration frequencies and symmetries at 264.6 cm-1(Eg), 354.2 cm-1 (Ag ) belonging trigonal phase of MoS2 (1T-MoS2). FTIR analysis has revealed a narrow peak at 457.6 cm-1 due Mo-S vibration bond. This observation confirms the success of synthesis of MoS2 nanostructures. Cyclic voltammetry (CV), charge-discharge (CD) and electrochemical impedance spectroscopy (EIS) measurements have revealed that the ratio 6:3:1 have shown to be optimum ratio due to its large reduction rate compared to pristine MoS2 NFs and other carbon supported MoS2 NFs. Calculated Rreduction for the carbon supported MoS2 NFs is the order 3:6:1>1:8:1>6:3:1>8:1:1 indicating the trend of ratio 3:6:1 appeared to have higher reduction rate than the rest of the material and it had far less ΔEpp than the rest of other ratios. All CV curves for both pristine MoS2 NFs and carbon supported MoS2 NFs confirmed a distinct Faradic characteristic. The VS2 nanosheets (NSs) and carbon supported VS2 NSs were also effectively synthesized via hydrothermal method. The SEM micrographs for VS2 NSs and carbon supported VS2 NSs samples reveals level increased. Furthermore, SEM-EDX analysis have confirmed the presence of V and S as well as C and O on carbon supported VS2 nanocomposites, and it clearly shown a gradually blending as the ratios increases. The structural studies through XRD analysis have revealed peaks at 2θ angles of 15.4◦, 28.2◦, 34.2◦, 36.2◦, 43.3◦,48.3◦, 54.4◦, 57.7◦ and 66.2◦ which correspond to the lattice planes (001), (002), (100), (011), (102), (003), (110), (103) and (201) belonging to hexagonal VS2 (H-VS2) crystalline phase as per JCPDS card 36-1139. The HRTEM have revealed that the VS2 NSs have an edge to edge length of ~ 0.294 – 1.248 µm. Also, HRTEM micrographs of VS2 NSs have revealed interplanar d spacing of 0.571 nm belonging to the (001) lattice plane of hexagonal VS2 (H-VS2) structure. FTIR analysis have shown a peak at 558 cm-1 attributed to V-S which is evident that sulfur has bonded with the metal (V) and is in agreement with EDS. CV, CD and EIS measurements have shown that the ratio 1:8:1 is more superior to VS2 NSs and other carbon supported VS2 NSs. Based on Rreduction for the carbon supported nanosheets VS2 nanosheets are ordered as 1:8:1>3:6:1>6:3:1>8:1:1. Carbon supported VS2 NSs of the mole ratio 1:8:1 showed a small resistance of 0.32 Ω. This is further evidence that the carbon supported VS2 NSs of the mole ratio 1:8:1 in addition to revealing excellent catalytic behaviour is also more chemically stable and has good conductivity properties._________
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- Date Issued: 2020