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Synthesis and characterization of binary and ternary palladium alloys for use as alternative counter electrode catalysts in dye sensitized solar cells

  • Authors: Zingwe, Nyengerai Hillary
  • Date: 2020
  • Subjects: Electrocatalysis Chemistry
  • Language: English
  • Type: Thesis , Doctoral , PhD (Chemistry)
  • Identifier: http://hdl.handle.net/10353/18513 , vital:42580
  • Description: The dye sensitized solar cell counter electrode facilitates the regeneration of the dye molecules thereby ensuring the provision of higher sunlight to electricity conversion efficiency. The standard platinum electrode suffers from low efficiency due to corrosion by the redox mediator as well as being extremely expensive due to high demand. As an alternative this research study illustrates the efforts undertaken to replace the standard platinum counter electrode with palladium alloy counter electrodes. Application of palladium alloys ensures sustenance of high catalytic activity by palladium which is as effective as platinum. Although palladium is equally as expensive as platinum, its application in the form of alloys minimizes the amount required to produce an effective counter electrode to 0.001-0.004 moles thereby ensuring the provision of high efficiency at a lower cost. Furthermore, charge transfer from the other alloyed elements to the palladium atom increases active sites leading to higher catalytic activity than platinum. Additionally, changes in crystal structure due to alloying enhances resistance to corrosion thus enabling the longevity of the alloy counter electrode in the electrolyte ___________________________________________________________________________ Electrochemical analysis was conducted to determine the catalytic functionality of the developed alloys in cobalt, ferrocene and iodine redox mediators. The binary (PdNi-reduced graphene oxide (rGO) and PdCo-rGO) and ternary (PdNiCo-rGO) palladium alloys were fabricated via a hydrothermal method. In order to determine the composition which could provide the maximum activity, optimization was conducted through variation of the molar ratios of the precursor solutions. The properties of the synthesized palladium alloys were determined using various techniques including x-ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), cyclic voltammetry (CV), and electrochemical impedance spectroscopy (EIS). The developed alloys were observed to comprise of palladium, nickel, cobalt, and carbon atoms. The particles were spherical in nature for all the unsupported alloys with the carbon supported alloys exhibiting spherical particle wholly surrounded by graphene sheets. Cyclic voltammetry and electrochemical impedance spectroscopy analysis showed that the carbon supported alloys PdNi-rGO, PdCo-rGO and PdNiCo-rGO produced the highest catalytic activities due to the synergy between their respective alloys and the incorporated reduced graphene oxide. The high catalytic effectiveness of these alloys yielded power conversion efficiency in the order PdNiCo-rGO (9.01) > PdNi-rGO (8.4.%) > PdCo-rGO (6.56%) > Pt (5.7%) which were better than the platinum efficiency in the cobalt redox mediator. The higher efficiency in the cobalt redox mediator relative to the iodine electrolyte illustrates that they are viable alternatives to the, corrosive and volatile iodine. Obtained results show that, the high recombination rates between the photogenerated electrons and the oxidized dye molecule which have been reported to reduce power conversion efficiency in one electron redox mediators did not affect the performance of the cell. However, these higher recombination rates affected the ferrocene electrolyte leading to extremely poor efficiency metrics. The obtained results indicated that reduced graphene oxide supported PdNi-rGO, PdNiCo-rGO as well as the unsupported PdNi3 alloys could successfully be implemented as substitutes to the platinum counter electrode in dye sensitized solar cells. The application of the palladium alloys is vital for improving stability and power conversion efficiency, as well as reducing cost.
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  • Date Issued: 2020

An intracategorical intersectional framework for understanding ‘supportability’ in womxn’s narratives of their pregnancy

  • Authors: Kalyanaraman, Yamini
  • Date: 2019
  • Subjects: Pregnancy -- Psychological aspects -- South Africa , Prenatal care -- South Africa , Pregnant women -- South Africa -- Psycology , Medical care -- South Africa -- Eastern Cape
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/96647 , vital:31304
  • Description: In South Africa, the current Maternal Mortality Ratio (MMR) is 135 per 100,000 live births, with a long way to go before it can achieve the Sustainable Development Goal (SDG) global target of under 70 per 100,000 live births by 2030. This research project focuses on the narratives of pregnant womxn in the Eastern Cape Province, using an intracategorical intersectional framework and Macleod’s ‘supportability’ model as a base. The study aims to locate womxn’s pregnancies within the interweaving biological, psychological, social, economic, cultural and political contexts within which they occur, while focusing specifically on the aspect of ‘supportability’. Through purposive sampling and snowballing methods, the research team recruited participants who were 18 years and older, in or past the second trimester of their pregnancy, and able to access antenatal care. Research data were produced using photo-elicitation techniques on 92 photographs and narratives from 32 interviews. An intersectional thematic analysis was used to generate themes, which highlighted different aspects that enabled or hindered pregnancy ‘supportability’. In accordance with prior research, it was revealed that womxn found emotional and tangible support the most beneficial. Findings from this study reveal the interconnectedness between a womxn’s personal (emotional, physical and cognitive) experiences of pregnancy, the micro-interactions of support (un)available from partners, family, friends, healthcare workers, workplaces and community members, and the macrostructures of socioeconomic policies, religiosity, cultural practices and healthcare systems. For example, gendered perceptions (a macro-structure) influence the instrumental support provided by partners (a micro-interaction), which impacts the womxn’s well-being (personal). Certain themes that emerged from the different narratives were: the importance of making available pregnancy-related information to the womxn; a desire for non-judgement and acceptance of their pregnancies within their community; and the need for adequate communication in microinteractions. The findings of this research also indicate that, despite the financial tensions inherent in each womxn’s life, the participants were driven by overarching hopes for their child’s future.
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  • Date Issued: 2019

Application of health belief model in developing contextual guidelines for adherence to antiretroviral treatment among adolescents and youths in Buffalo City Metropolitan Municipality District, East London, South Africa

  • Authors: Mayeye, Bulelwa
  • Date: 2018
  • Subjects: HIV-positive children--Treatment--Management AIDS (Disease) in adolescence HIV-positive youth
  • Language: English
  • Type: Thesis , Doctoral , Nursing
  • Identifier: http://hdl.handle.net/10353/15572 , vital:40472
  • Description: Background: Adhering to the treatment instructions for a long-term illness poses a great challenge to the client especially adolescents and youths. In public health centers it is observed that most adolescents and youths on Ante Retroviral Treatment (ART) do not continue taking ART and do not honor their Art related scheduled appointments at the clinic. An increase loss to follow up among these cohorts is noticeable in Buffalo City Metropolitan Municipality district. Inconsistent adherence to ART may result in the development of resistance mutations. Purpose: The purpose of the study was to develop and describe context – specific antiretroviral treatment guidelines based on the biomedical, cognitive and psychosocial needs of the adolescents and youths at the Buffalo City Metropolitan Municipality district. Methodology: The study was conducted in two phases, phase one consisted of quantitative and qualitative approaches. For phase one an explanatory sequential mixed method of quantitative and qualitative designs was employed. The study was guided by Health Belief Model. The target population were adolescents and youths receiving ART from the selected health facilities in Buffalo City Metropolitan Municipality District in the Province of the Eastern Cape. Participants were chosen based on purposive sampling. A convenience sample of 206 adolescents and youths between the ages of 14 to 24 attending ARV clinics were approached. Ethical considerations, that is, the rights of all the participants were honoured. Data was collected using self administered questionnaires followed by semi-structured interview where face to face interviews were conducted. Reliability validity and trustworthiness of the research was ensured. Quantitative data was analysed through descriptive statistics. For qualitative approach transcrips were coded thematically. In Phase 2, context – specific antiretroviral treatment guidelines were developed to promote adherence to ART by adolescents and youths of Buffalo City Metropolitan Municipality district. Results: About 35percent of the participants indicated low adherence, 31percent for moderate adherence and 34percent for high adherence. A strong correlation between interpersonal relationship and adherence (p = 0.008), a correlation between aspect of care related to clinic and adherence (p = 0.028), a significant correlation between social support and adherence to ART (p = 0.006) and a significant relationship between self- efficacy and adherence to ART (p = 0.000) were obtained. No correlation between demographic status and adherence except for race. Results from the interviews revealed that barriers to adherence were more evident than enabling factors. Recommendations: Health service providers should strengthen ART adherence programmes for adolescents and youths by applying principles as they appear in the context – based guidelines.
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  • Date Issued: 2018

Factors affecting effective ecological restoration of Portulacaria afra (spekboom)-rich subtropical thicket and aboveground carbon endpoint projections

  • Authors: Van der Vyver, Marius Lodewyk
  • Date: 2018
  • Subjects: Restoration ecology , Plant conservation -- South Africa Portulacaria afra -- South Africa Shrubs -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , DPhil
  • Identifier: http://hdl.handle.net/10948/23250 , vital:30468
  • Description: Among the requirements to achieve effective ecological restoration on a landscape scale are a scientific underpinning, strong adaptive management and the setting of realistic endpoints. Efficacy and success depend on a complex interplay of factors of both local and regional influence. Biome-wide restoration experiments are rare, but valuable for evaluating efficacy of different protocols according to local context. The Thicket-wide Plot (TWP) experiment was initiated by the Subtropical Thicket Restoration Programme to inform landscape-scale ecological restoration of degraded Portulacaria afra (spekboom)-rich Subtropical Thicket. Thirteen different planting treatments of Portulacaria afra (spekboom) truncheons were planted as replicated rows on 0.25 ha fenced plots across the distribution range of spekboom-rich thicket habitat to better establish effective restoration protocols. I used a rule-based learning ensemble algorithm to evaluate 60 different predictors that potentially impact effective restoration, covering a range of climatic, topographic, edaphic, ecological and management related factors observed at 227 of these TWP plots. Percentage survivorship and aboveground biomass carbon sequestration rate (ABCsr) were taken as proxies for efficacy derived from subsequent monitoring data gathered 2 - 5 years after establishment, and a new allometric model I developed for spekboom. I found herbivory and identification of target habitat the two most important predictors of restoration efficacy, both well within the control of the practitioner. Highest survivorship and ABCsr were associated with larger truncheons planted deeper. The only exception to this pattern was found amongst the two smallest size truncheon categories. The application of external rooting hormone or watering treatment to truncheons were found of no significance to effective restoration, while all the pruned treatments were, in association with lesser planting depth, found to be significantly less effective than untreated truncheons planted deeper. When the restoration protocol is optimal (largest truncheons planted deepest in target habitats and protected from herbivory), my results show higher annual carbon sequestration rates (1.46 - 3.7 t C ha−1 yr−1 in aboveground biomass) than most older restoration sites that have been identified as benchmarks of success. In order to project ABC endpoints, I generated 40 new species-specific allometric models and used them to estimate biomass and carbon of intact and degraded stands on five sites spread out across the region. The highest AGC for stands in both intact and degraded states were estimated at 42.96 t Cha−1 and 12.98 t C ha−1 respectively, and the lowest at 26.32 t C ha−1 and 2.52 t C ha−1. Large canopy dominant (LCD) species contributed the largest AGC portion at three intact stands. The second largest portion was recorded for spekboom. The difference between paired stands on each sample site ranged between 23.8 and 32.8 t C ha−1, which provide a realistic target for biome-wide restoration that, when adopted together with current protocols, may be reached within three decades of inception.
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  • Date Issued: 2018

Abalone stock enhancement at Cape Recife, Eastern Cape Province of South Africa

  • Authors: Witte, Warren
  • Date: 2017
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/45695 , vital:25532
  • Description: The potential for restocking depleted natural reefs with hatchery abalone, Haliotis midae, to support a commercial ranching venture in the Eastern Cape Province of South Africa was investigated. A baseline stock assessment and analysis of historical fishery data provided compelling evidence of significant declines in the abalone stock, attributed to uncontrolled illegal fishing over the last 20 years at the study site. A ranching pilot study was undertaken where small-scale replicated seeding experiments were set up which quantified the effect of seed size, density and habitat on survival and growth of hatchery-reared abalone. Thirty-six experimental plots were seeded with 8400 abalone spread evenly over two broad habitats. Mean retrievals of seeded abalone were 17% ranging from 4 - 42% after a minimum of eight months at large. Release density and large-scale habitat had no significant effect on seed survival, but smaller seed size (40.0 ±3.7mm shell length) achieved higher (F1, 22 = 4.64, p = 0.042) retrievals than larger seed size (53 ±3.7mm). Growth rates were an average of 30% higher in the shallow sites compared deeper sites (t1, 1091 = -2.79, p = 0.005). There was seasonal component in growth with a 0.55 ± 0.04 mm per month higher rate in summer than during winter (t1, 1091 = -12.45, p < 0.001). Abalone seed releases were also conducted on a larger scale, which focused on the economic potential for commercial-scale ranching. Over 160 sites were seeded with 1.4 million hatchery reared abalone or 30 metric tonnes. Seventeen sites underwent long-term monitoring of survival with repeated sampling events on sites over a period of up to 666 days. Nine of these sites were seeded with 140800 small abalone (29 – 40 mm), three sites with 25100 medium abalone (30 – 46 mm) and five sites with 14700 large abalone (60 – 84 mm). There was a significant difference in survival between the seed sizes (F4,6329 = 304.3, P < 0.001). The Generalized Linear Mixed Model (GLMM) calculation estimated the instantaneous apparent mortality rate for small, medium and large abalone at 1.19 yr-1 , -0.9 yr-1 and -0.67 yr-1 , which equated to a survival rate of 21%, 28% and 36% per year respectively. The weighted mortality rate calculated according to the seed size differential mortality and the number of seed released for those sizes was 1 yr-1 or 25% survival. In conjunction with a conservative somatic growth rate of 1.2mm.m-1 and plausible emigration rates, a range of biomass harvesting estimates were obtained. Movement and mortality were investigated using video analysis which showed that hatchery seed had the ability to move considerably once released onto natural reefs and confirmed that mortality immediately following releases was due to the heavy predation pressure as confirmed by shell collections. This project has demonstrated that potential exists for ranching in South Africa and highlights critical factors that need to be addressed if ranching is to be an economically viable operation.
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  • Date Issued: 2017

Beyond War, Violence, and Suffering: Everyday Life in the Honde Valley Borderland Communities during Zimbabwe’s Liberation War and the RENAMO Insurgency, c.1960-2016

  • Authors: Nyachega, Nicholas
  • Date: 2017
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/7023 , vital:21210
  • Description: This thesis examines the history of the Honde Valley area, in Mutasa District, along the Zimbabwe-Mozambique border. It uses two historic developments: the Zimbabwe liberation war and RENAMO insurgency to explore daily life and mundane experiences of the borderland communities, mainly from the late 1970s to 2016. Because earlier historians of these two historic developments have been much interested in studying the aspects of violence and suffering, this study extends the focus of analysis to the mundane experiences. I argue that in borderland areas, there are other wartime aspects of life worth investigating other than violence and suffering. In doing so, the thesis deploys the notions of conviviality and the everyday to understand the daily experiences of the Honde Valley communities during the disruptions caused to everyday life by these wars. Admittedly, twentieth century wars in Zimbabwe and Mozambique transformed the area that had previously remained at the fringes of colonial power from 1890-1950, into a new and bitterly contested ‘sharp end’ of the war. Nonetheless, peoples’ experiences during these wars cannot be understood merely in relation to violence and suffering. Furthermore, I argue that although some families were forcibly moved into liberation war “Protected Villages ”, they innovatively designed new mechanisms and alternative lifestyles in response to the state’s routinised control. The thesis concludes that beyond the confines of war-induced violence and suffering, Honde Valley communities used their borderland location to evade the pressures of war and continued with life.
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  • Date Issued: 2017

Help or hindrance? a critical analysis of the agreement on sanitary and phytosanitary measures, and its effects on developing countries

  • Authors: Waterworth, Tayla
  • Date: 2017
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: http://hdl.handle.net/10962/7090 , vital:21216
  • Description: WHILE it is accepted that the category of "developing country" is a broad one, it can nevertheless be acknowledged that the countries which fall within this categorisation share several common features. Such common features include their lack of financial resources and scientific capacity, and their reliance on trade in primary agricultural goods. The Agreement on Sanitary and Phytosanitary Measures was originally created to regulate trade in primary agricultural goods, and so its provisions are of great significance to developing countries. In its Preamble the Agreement acknowledges both the unique circumstances of developing countries and its desire to assist them in entering into and expanding within the international trading markets. As part of this endeavour, several provisions were included in the Agreement which purport to protect and provide for the interests of developing countries. In its inception, its Preamble, and the very nature of its content, the Agreement shows a desire to assist developing countries wherever possible. Unfortunately, a close analysis of the provisions of the Agreement shows that this desire has not been fulfilled. Many of the provisions of the Agreement are heavily skewed toward the interests of importing Members, often at the expense of developing Members - particularly those that export primary agricultural goods. Even the provisions of the Agreement which purport to provide protection and special and differential treatment specifically for developing countries frequently fall short, either as a result of ambiguous phrasing or poor textual interpretation by the dispute settlement bodies of the World Trade Organization. As a result, there exists a potential within the Agreement to have a significant detrimental impact on the international trading opportunities of exporting developing countries. In this thesis I analyse the provisions of the Agreement to determine where, why and how they are likely to have, or are having, a detrimental impact on developing countries (particularly exporting developing countries). After identifying these problems I examine and discuss several potential solutions and how they may be implemented to minimise - or even remove - the negative impact on developing countries and their international trading markets.
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  • Date Issued: 2017

Inter-role conflict and coping strategies of employed mothers : a study of selected private schools in the Mthatha area of the Eastern Cape Province, South Africa

  • Authors: Tegbe, Dzigbordi
  • Date: 2017
  • Subjects: Role conflict Working mothers Women -- Employment , Children of working mothers
  • Language: English
  • Type: Thesis , Masters , MSoc
  • Identifier: http://hdl.handle.net/10353/7830 , vital:30768
  • Description: Working women are finding it increasingly challenging to establish a balance between work and family life. This often results in work-family conflicts which affect women teachers’ well-being. The current study utilised role theory to investigate the effect of work-family conflicts on work related income, using the Mthatha community as case study. The study explored the impact of inter-role conflict on stress related illness and the coping strategies working women can adopt to create work-family balance. The motivation of the study is based on limited research regarding the impact of work-family on South African working mothers, where feminisation of labour force is compelling women to devote more time to their work roles thus neglecting their traditional roles as mothers. The research design used a cross section survey, and the sampling procedure applied a multi-stage concept of data collection, where both qualitative and quantitative methods were used to delve into the issues of inter-role conflict and coping strategies of employed mother-teachers, to establish causal relationships geared towards explaining the phenomena. The population consisted of working mothers in Mthatha private schools, where data was collected using a work-family conflict questionnaire. The results of the study established a positive relationship between the multi-tasking of mother-teachers and inter-role conflicts, and also confirmed that work roles/tasks have become overwhelming. Consequently, working women families are neglected, while support from extended families is not coming or is insufficient to alleviate the burdens of role conflicts. The conflicts lead to stress-related illnesses and individually, women are not interested in consulting psychologists to manage their stress. The women suffer ailments such as headaches, general pains, sleep dysfunction, high or low blood pressure, heart diseases, and become moody and tearful, expressing low self-esteem. Women teachers in Mthatha were of the view that proper strategies are needed to mitigate their stress. Some of these coping strategies involve a good condition of service at school, refraining from applying medication to solve stress, taking part in exercise and rest, and having a relaxing time with family and friends. The findings of this study can help through suggesting useful strategies that can be utilised by working teachers who are mothers to mitigate their inter-role conflict. It will also lead to more insight into role theories.
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  • Date Issued: 2017

The role of midwives with regard to the clinical supervision of midwifery students

  • Authors: Maya, Sindiswa
  • Date: 2017
  • Subjects: Midwifery -- Study and teaching -- South Africa -- Eastern Cape Midwives -- Training of -- South Africa -- Eastern Cape , Nursing -- Study and teaching -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MCur
  • Identifier: http://hdl.handle.net/10948/45421 , vital:38615
  • Description: This study investigated how registered midwives view their role with regard to the clinical supervision of midwifery students. The information obtained from this study assisted with recommending assistance to nurse educators to enhance the support of midwives in the clinical supervision of midwifery students.The proposed study followed a qualitative, explorative, descriptive and contextual design and the research populations were midwives working in the maternity units. Non-probability purposive sampling was applied to secure a useful sample and correct data to be collected. Semi-structured one-on-one audio-captured interviews were the method of data collection, observational and personal field notes were used to enhance collected data. The researcher was the data collector. Twenty- two participants, inclusive of two participants for the pilot study were interviewed. Data were analyzed using Tesch’s method of analysis for qualitative data and an independent coder was sought to assist with the coding process. Two predominant themes emerged from the interviews with the participants. The researcher noted that although the midwives agreed that their clinical supervisory role was of importance and necessity almost all the midwives agreed that there were some identified issues that hindered the effectiveness of their role.
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  • Date Issued: 2017

Relevance of the family assessment for least developed countries (FALDC) assessment tool rendering child protection services in the Eastern Cape, South Africa

  • Authors: Mgidi, Siphelele
  • Date: 2016
  • Subjects: Child abuse -- South Africa -- Prevention Family social work -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10353/6335 , vital:29578
  • Description: Assessment tools have been used for various purposes, including for protecting children from maltreatment. The main aim of this study was to to evaluate and determine the relevance of the Family Assessment for Leased Developed Countries (FALDC) assessment tool for child protection services in the Eastern Cape Province. The research was conducted using the social developmental welfare approach (Patel, 2005) and ecological systems theory (Healy, 2005). The study made use of the qualitative research method; in doing so the study made use of the case study design. In using the qualitative research method, focus group discussions were conducted with 29 social workers involved in child protection services. The findings of the study indicated that the FALDC assessment tool provides information useful for child protection services even though it contains sections that are regarded as less relevant to child protection. The study also founded that the FALDC assessment tool is relevant to child protection in the South African context, yet it needs to be aligned so that it provides much of the information desired by those involved in child protection. A conclusion drawn from this study is that the FALDC assessment tool appears to be relevant for child protection services. The FALDC assessment tool needs to be adjusted taking into consideration other aspects important to child protection in the South African child protection context.
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  • Date Issued: 2016

“Bold Distinguished You”: a critical discourse analysis of the representation of masculinity in Destiny Man, 2012 - 2013

  • Authors: Hutcheson, Lauren
  • Date: 2015
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/56032 , vital:26767
  • Description: Radical social and economic changes have transformed the employment opportunities available to black men in South Africa, and consumer magazines like Destiny Man have been quick to respond. Historical shifts in the configuration of an ideal black masculinity have been proposed over time in magazine representations of black men. Critiques of the representations of black men in consumer magazines pre- and post- independence interrogate the politics of the ways in which black masculinity has been, and is, configured around classed identities. In this study, I present the findings of a critical discourse analysis (CDA) on the construction and representation of masculinity within a contemporary South African’s men’s lifestyle magazine, Destiny Man. This study presents an analysis of the subject positions that this magazine constructs for its male readers. Destiny Man proposes particular kinds of discursive subjects in its sets of representations, both in word and image. The images and copy validate a neo-liberal elite masculinity achieved through self-surveillance and a variety of technologies of self, with the ultimate focus on material success. I argue that these representations have implications for the development of masculinities in a context marked by extreme inequality.
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  • Date Issued: 2015

Aggrey Klaaste : the relentless community-builder

  • Authors: Mbonambi, Phakama
  • Date: 2014
  • Subjects: Klaaste, Aggrey , Sowetan (Johannesburg, South Africa) , Newspaper editors -- South Africa -- Biography , Nation-building -- South Africa , South Africa -- Politics and government -- 20th century
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:5999 , http://hdl.handle.net/10962/d1020882
  • Description: This thesis looks at the life and times of Aggrey Klaaste, the larger-than-life late editor of Sowetan who shot to fame by championing a novel idea of nation building. His initiative started in 1988 as flames of violence engulfed South Africa and it seemed as if an apocalypse was on the cards. Sickened by what the frustrated black community was doing to itself, for example the use of the dreadful practice of necklacing against the so-called collaborators, he called for moral regeneration. He wanted his compatriots to look into the future and take their destiny in their own hands. Through nation building he tirelessly launched into crusading journalism that sought to heal the scars of the black community after decades of apartheid. It was grassroots community building. He rewarded ordinary men and women who made a difference in their communities. He actively sought peace to end the violence of the 1980s and 1990s. He spoke his mind without wearing any ideological blinkers, even as some thought his initiative would disturb the march to freedom. He was the ultimate newspaperman. This thesis argues that by calling for reconciliation and rebuilding of battered black communities even before freedom came, Klaaste was ahead of his time and even predated Nelson Mandela. Klaaste preferred to do what was right and not be shackled to any ideology. In doing so, he angered many people who felt his thinking was derailing the struggle for freedom. But Klaaste stressed that nation building was ideologically neutral and was meant for everyone. By contradicting prevailing political orthodoxy, he very likely risked his own life. But, like a true leader, he stuck to his convictions. Klaaste was exemplary in calling for reconciliation and building when others called for breaking. Ten years after he died, as the country still grapples with issues he raised in his popular weekly column On The Line, it is worth appraising his thinking and actions. The thesis also looks at the environment that influenced his thinking. His life is interwoven with South African history. That he began his adult life shakily, spending his days in a drunken stupor at Johannesburg shebeens to being awarded the Order for Meritorious Service for his outstanding community work, makes him an interesting subject to look at. It’s a story of a man who vanquished his demons and, through his compassionate community engagement, became an asset to the country. It’s a story of redemption. As his private life attests, he was man with flaws – like anyone else. But Aggrey Klaaste strived to do what was right for his community at all times. He was a restless community builder.
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  • Date Issued: 2014

Shembe religion's integration of African traditional religion and Christianity : a sociological case study

  • Authors: Shange, Nombulelo Tholithemba
  • Date: 2014
  • Subjects: Shembe Church Christianity and other religions -- South Africa -- Inanda Christianity and culture -- South Africa -- Inanda Independent churches -- South Africa -- Inanda Religious tolerance -- South Africa -- Inanda South Africa -- Religious life and customs
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3365 , http://hdl.handle.net/10962/d1011819
  • Description: The Shembe Church's integration of African Traditional Religion and Christianity has been met by many challenges. This merger has been rejected by both African traditionalists and Christians. The Shembe Church has been met by intolerance even though the movement in some ways creates multiculturalism between different people and cultures. This thesis documents the Shembe Church's ideas and practices; it discusses how the Shembe Church combines two ideologies that appear to be at odds with each other. In looking at Shembe ideas and practices, the thesis discusses African religion-inspired rituals like ukusina, ancestral honouring, animal sacrificing and virgin testing. The thesis also discusses the heavy Christian influence within the Shembe Church; this is done by looking at the Shembe Church's use of The Bible and Moses' Laws which play a crucial role in the Church. The challenges the Shembe Church faces are another main theme of the thesis. The thesis looks at cases of intolerance and human rights violations experienced by Shembe members. This is done in part by looking at the living conditions at eBuhleni, located at Inanda, KZN. The thesis also analyses individual Shembe member's experiences and discusses how some members of the Shembe church experience the acceptance of the Shembe religion in South African society. This thesis concludes by trying to make a distinction between intolerance and controversy. I try to highlight the idea that what many Shembe followers see as discrimination and intolerance towards them is sometimes a difference in opinion from other cultural groups. Sometimes these differences are not geared towards criticising other religious groups or perpetuating intolerance.
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  • Date Issued: 2014

Investigating the incorporation of education about, in/through and for the environment in the Geography junior phase curriculum: a case study of three Namibian schools

  • Authors: Anyolo, Eveline Omagano
  • Date: 2012
  • Subjects: Environmental education -- Namibia -- Case studies Education, Primary -- Curricula -- Namibia Geography teachers -- Namibia -- Case studies
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1594 , http://hdl.handle.net/10962/d1003476
  • Description: This study was carried out to investigate how education about, in/through and for the environment is incorporated in the Namibian Geography Junior Phase curriculum in three schools in Oshana Education Region. Education about, in/through and for the environment are three forms of environmental education identified by Fien (1998). This study is a qualitative, interpretive case study. It reviews the activities, content knowledge, methods, competencies and resources and describes how they were used by teachers in fostering education about, in/through and for the environment in the curriculum. Data was generated through document analysis, observations and semi-structured interviews. The results were interpreted and discussed in relation to the research question which is: How is education about, in/through and for the environment incorporated in the Geography Junior Phase curriculum? Key findings of the study suggested that teachers incorporated education about, in/through and for the environment in their teaching. Teachers used the prescribed syllabus to structure their environmental learning lessons. Most methods, resources and activities used by the teachers promoted education about the environment. The study also found that most types of knowledge about the environment were covered by the teachers. This enabled learners to examine the complexity and interrelatedness of natural systems. The study found that the way the resources were used exclusively supported education about the environment. Linking learning to local context in this study encouraged education in/through the environment and enhanced the learning process through real life experience. The study also found that, although teachers taught their learners for the environment, they did not empower them in taking actions towards environmental problems. Based on the insights offered by this research, the study identified further support required by teachers and made recommendations for effective incorporation of about, in/through andfor the environment in the curriculum.
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  • Date Issued: 2012

Love Interrupted (Short story anthology)

  • Authors: Malatji, Reneilwe
  • Date: 2012
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:21016 , http://hdl.handle.net/10962/6004
  • Description: This collection of stories focuses on struggles between black South African men and women. Several of the stories explore how the rise of the affluent and powerful black woman is redefining relationships. Other stories in the collection describe women who do not know how to free themselves from their subservient role, or do not want to. Issues of interracial relations between blacks and whites in contemporary South Africa also feature in most of the stories.
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  • Date Issued: 2012

Misconceptions in electrostatics among learners at university entry point: a South African case study

  • Authors: Muthiraparampil, Susamma Thomas
  • Date: 2012
  • Subjects: Electrostatics -- Learners -- Education (Tertiary)
  • Language: English
  • Type: Thesis , Masters , M Ed
  • Identifier: vital:18450 , http://hdl.handle.net/11260/d1007755
  • Description: The study explored misconceptions in electrostatics and their origins amongst learners at entry point in a South African University. Available literature showed misconceptions in electrostatics amongst High School learners and confirmed textbooks as one of the sources of misconceptions. It was therefore important to look for misconceptions in electrostatics amongst first year Bachelor of Science (B.Sc 1) learners in physics courses and their origins at the start of the academic year. The study also explored educators' misconceptions in the topic to check whether they could also be a source of learners' misconceptions. The results were intended to give guidance on how to eliminate learners' misconceptions at school rather than carrying them to higher education institutions. The study used the ex-post facto research design and was a case-study. The ex-post facto research design enabled the researcher to investigate whether one or more pre-existing conditions have possibly caused the existing problem of misconceptions. The sample consisted of 198 learners from B.Sc 1 physics course and 28 educators from 15 High Schools in one education district in the Eastern Cape Province of South Africa. The data were collected through questionnaires, analysis of textbooks, and interviews. The Statistical Package for Social Sciences (SPSS) version 17 was used for quantitative analysis whereas categorization and coding were used for qualitative analysis. The study revealed that learners had misconceptions in electrostatics. The origins of misconceptions were traced to educators, textbooks, intuition, daily language and lack of hands-on activities. It emerged from the study that educators also had misconceptions and the cause of their misconceptions were textbooks, websites and gaps in content knowledge. The recommendations from the study were the following: identify preliminary knowledge of learners during introduction of the lesson; introduce the iii constructivist approach to teaching in the teacher training curriculum so that learners at school can be taught using the same approach; frequent upgrading of educators through inservice workshops to reduce educators' misconceptions which, in turn, will help to reduce the misconceptions among learners; introduction of conceptual change textbooks.
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  • Date Issued: 2012

“Beautiful powerful you” : an analysis of the subject positions offered to women readers of Destiny magazine

  • Authors: Jangara, Juliana
  • Date: 2011
  • Subjects: Destiny Magazine , Women's periodicals , Women, Black -- South Africa -- Social conditions , Sex role -- South Africa , Femininity -- South Africa , Women -- Identity , Feminism and mass media , Femininity (Philosophy)
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3533 , http://hdl.handle.net/10962/d1013395
  • Description: Women's magazines are popular cultural forms which offer readers representations intended to advise women on how to work towards and achieve idealised femininities. They perform such a function within the wider socio-historical context of gender relations. In a country such as South Africa, where patriarchal gender relations have historically been structured to favour men over women and masculinity over femininity, the representation of femininity in contemporary women's magazines may serve to reinforce or challenge these existent unequal gender relations. Informed by a feminist poststructuralist understanding of the gendered positioning of subjects through discourse, this study is a textual analysis that investigates the subject positions or possible identities offered to readers of Destiny, a South African business and lifestyle women's magazine. Black women, who make up the majority of Destiny's readership, have historically been excluded from the formal economy. In light of such a background, Destiny offers black women readers, through its representations of well-known business women, possible identities to take up within the white male dominated field of business practice. The magazine also offers 'lifestyle content', which suggests to readers possible ways of being in other areas of social life. Through a method of critical discourse analysis, this study critically analyses the subject positions offered to readers of Destiny, in order to determine to what extent the magazine's representations of business women endorse or confront unequal gender relations. The findings of this study are that Destiny offers women complex subject positions which simultaneously challenge and reassert patriarchy. While offering readers positions from which to challenge race based gender discrimination – a legacy of the apartheid past – the texts analysed tend to neglect non-racially motivated gender prejudice. It is concluded that although not comprehensively challenging unequal gender relations, the magazine whittles away some tenets of patriarchy.
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  • Date Issued: 2011

Developing a systematic model for the capturing and use of African oral poetry: the Bongani Sitole experience

  • Authors: Mostert, André M
  • Date: 2010
  • Subjects: Sitole, Bongani, 1937- Communication and culture Oral tradition in literature Oral tradition -- Africa Ethnoscience -- Africa Folk poetry, African
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3579 , http://hdl.handle.net/10962/d1002154
  • Description: Oral traditions and oral literature have long contributed to human communication. The advent of arguably the most important technology, the written word, altered human ability to create and develop. However, this development for all its potential and scope created one of the most insidious dichotomies. As the written word developed so too the oral word became devalued and pushed to the fringes of societal development. One of the unfortunate outcomes has been a focus on the nomenclatures associated with orality and oral tradition, which although of importance, has skewed where the focus could and should have been located, namely, how to support and maintain the oral word and its innate value to human society in the face of what has become rampant technological developments. It is now ironic that technology is creating a fecund environment for a rebirth of orality. The study aims to mobilize technauriture as a paradigm in order to further embed orality and oral traditions to coherently embrace this changing technological environment. The central tenet of the study is that in order to enhance the status of orality the innate value embodied in indigenous knowledge systems must be recognized. Using the work of Bongani Sitole, an oral poet, as a backdrop the study will demonstrate a basic model that can act as a foundation for the effective integration of orality into contemporary structures. This is based on work that I published in the Journal of African Contemporary Studies (2009). Given the obvious multi-disciplinary nature of the material the work covers a wide cross section of the debate, from questions of epistemology and knowledge in general in terms of oral traditions, through the consciousness and technical landscapes, via the experience with Sitole’s material to issues of copyright and ownership. This work has also been submitted for publication together with my supervisor as a co-author. The study intends to consolidate the technauriture debate and lay a solid foundation to support further study.
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  • Date Issued: 2010

Aspects of the ecology and biology of the isopod, Exosphaeroma hylocoetes, (Barnard, 1940) in three temporarily open/closed southern African estuaries

  • Authors: Henninger, Tony Oskar
  • Date: 2009
  • Subjects: Estuaries -- South Africa -- Eastern Cape Estuarine ecology -- South Africa -- Eastern Cape Isopoda -- South Africa -- Eastern Cape Estuarine biology -- South Africa -- Eastern Cape Ruppia maritima
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:5640 , http://hdl.handle.net/10962/d1005322
  • Description: Temporarily open/closed estuaries (TOCE’s) are the numerically dominant type of estuary accounting for ≈ 70 % of all estuaries along the South African coastline. Despite their numerical dominance, aspects of the biology of organisms within these systems, particularly macrocrustacea remain poorly understood. This study firstly assessed the abundance and biomass of the most common isopod, Exosphaeroma hylocoetes, in three Eastern Cape TOCE’s, (the West Kleinemonde, East Kleinemonde and Kasouga Estuaries), and their response to mouth breaching events. This study was followed by aspects of the biology of the isopod including their utilisation of submerged macrophytes as a refuge from predation and/or possible food source, as well as the growth rates of the isopods in the laboratory under different environmental conditions. Mean isopod abundances and biomasses ranged between 0 and 4 791 ind. m⁻² and 0 and 9.65 mg dwt. m⁻² in the West Kleinemonde Estuary and between 0 and 108 ind. m⁻² and 0 and 0.318 mg dwt. m⁻² in the nearby East Kleinemonde Estuary. In the Kasouga Estuary, the values ranged between 0 and 3 650 ind. m⁻² and 0 and 5.105 mg dwt. m⁻². Temporal and spatial changes in the abundance and biomass of E. hylocoetes within the three systems was primarily linked to mouth phase, with populations declining when the mouth was open and to a lesser extent, seasonality. In all three estuaries maximum isopod abundances and biomasses were recorded in their middle and upper reaches, which could be ascribed to the presence of submerged macrophytes particularly Ruppia maritima, in two of the estuaries. Males (5.71 ± 0.41 mm) were significantly larger than females (3.99 ± 0.26 mm), but the sex ratios were skewed in favour of females, (a common feature in many isopod populations). Females were found carrying brood throughout the study, releasing offspring directly into the water column, to allow recruitment to the populations. The larger the female, the larger the brood carried (up to a maximum of 72 embryo/mancas). Results of laboratory experiments indicate that the close association of Exosphaeroma hylocoetes with submerged macrophytes is a result of the plant stands providing a refuge against predation by selected ichthyofauna. However stable carbon isotope and fatty acid analyses indicate that E. hylocoetes made use of ephiphytic algae and detritus on the stems of R. maritima, rather than the submerged macrophyte itself. There were no significant differences in the growth rates of male and female isopods at combinations of temperature (15 and 25 °C) and salinity (15 and 35 ‰). Laboratory growth studies revealed that males lived longer than females (25.77 ± 3.40 weeks vs 21.52 ± 3.00 weeks), and therefore achieved larger overall size. Females, however, reached sexual maturity (at 2.5 mm) at a faster rate (two to four weeks) than males (5.5 mm after 6.5 to 11 weeks), dependent on temperature. Exosphaeroma hylocoetes with its association with submerged macrophytes, early maturity, its growth rates and longevity, female-biased sex ratios and year-round breeding, all contribute to its success in temporary open/closed estuaries.
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  • Date Issued: 2009

The attitudes of isiXhosa-speaking students toward various languages of learning and teaching (LOLT) issues at Rhodes University

  • Authors: Aziakpono, Philomina
  • Date: 2008
  • Subjects: Rhodes University -- Students -- Attitudes Language and education -- South Africa Xhosa language -- Study and teaching (Higher) -- South Africa English language -- Study and teaching (Higher) -- South Africa Education, Bilingual -- South Africa Language policy -- South Africa Language planning -- South Africa
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2339 , http://hdl.handle.net/10962/d1002621
  • Description: This study aims at eliciting opinions and beliefs of isiXhosa-speaking students to revealtheir attitudes toward various languages of learning and teaching (LOLT) issues at RhodesUniversity, and to determine the influence of a number of variables (such as age, gender,schooling background, level of study and field of study) on these attitudes. Another aim of the study is to compare the findings of this research to the recent findings on isiXhosaspeaking students’ language attitudes at the University of the Western Cape (Dyers 1999) and the University of Fort Hare (Dalvit 2004). Qualitative and quantitative methods were used: data was gathered using a survey that employed a questionnaire and interviews (individual and focus group). The questionnaire data is analysed through using percentage scores as well as mean values coupled with Chi-square tests, while the interviews are analysed qualitatively to further confirm the results of the quantitative analysis. Results are also compared with other recent surveys at South African universities. The results reveal that respondents had a generally positive attitude toward English as LOLT, based mainly on instrumental motivations. More importantly, there was a positive attitude toward the use of isiXhosa alongside English. The motivations for the use of isiXhosa were both instrumental and integrative in nature. The majority of respondents who supported a bilingual arrangement did not, however, believe that a fully-fledged bilingual policy would be practical, mainly because of the multilingual nature of Rhodes University. They felt, however, that providing English and isiXhosa exam question-papers, bilingual tutor support and isiXhosa definitions of discipline-specific technical terms would facilitate learning. Most of the variables mentioned above had an influence on the relevant language attitudes, often confirming the findings of other studies. For instance, schooling background greatly influenced the language attitudes of respondents. Those from previously advantaged English-only schools showed very positive attitudes toward an English-only policy, while most respondents from formerly disadvantaged DET bilingual schools were favourably disposed toward a bilingual policy of English and isiXhosa at Rhodes University. A comparison of the findings of this study with those of recent findings on isiXhosa students’ language attitudes at other universities reveals that respondents at the University of Fort Hare were most favourable toward a bilingual policy, those at the University of the Western Cape were to some extent favourable toward a bilingual arrangement, while respondents at Rhodes University were least favourable toward a bilingual policy.
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  • Date Issued: 2008
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