South East Academic Libraries System (SEALS)
Not a member yet
69550 research outputs found
Sort by
MeerKAT observations of the Abell 141 galaxy cluster
Get PDFThis study is aimed at being an overview and investigation of the behaviour and morphology of radio quiet (RQ) active galactic nuclei (AGN) in the radio and optical/near-infrared (NIR) bands. It is hoped that a concise description of the relation that exists between accretion activity and star formation (SF) will be achieved through utilization of multiwavelength astronomy analysis. This analysis includes the processing of data acquired from the MeerKAT International GHz Tiered Extragalactic Exploration survey (MIGHTEE), the Southern African Large Telescope (SALT), the Hyper Suprime Camera (HSC) mounted on the Subaru telescope and the VISTA telescope. In this thesis, several targets were observed using SALT spectroscopy, but a redshift of only one of them was obtained. Lastly, it was established that for the sample of RQ AGN studied, the AGN contribute a large fraction of the radio emission observed.Thesis (MSc) -- Faculty of Science, Physics and Electronics, 202
Aptamer-based biosensor for prostate specific antigen detection using cobalt phthalocyanine-exfoliated graphite composites
Get PDFThe work focuses on the development of biosensors and their use for the detection of prostate specific antigen (PSA). Four cobalt phthalocyanines (CoPcs) complexes: (1) cobalt tetra pyridyloxy phthalocyanine, (2) cobalt tetra acetamidophenoxy phthalocyanine, (3) cobalt tris(acetamidophenoxy) mono benzoic acid phthalocyanine, and (4) cobalt tris(acetamidophenoxy) mono propionic acid phthalocyanine, an exfoliated graphite (EG), and aptamer are used to make probes for PSA detection. Each complex is π-π stacked onto the EG to form EG-CoPc(π-π) hybrid which was used to modify a glassy carbon electrode (GCE). EG and CoPc were also used to modify the GCE sequential (seq) with CoPc on top to give GCE-EG-CoPc(seq). For the detection PSA, PSA specific aptamer was either sequential added or covalently linked to complexes 3 and 4 on the modified electrodes and was only sequentially added onto complexes 1 and 2 modified electrodes. Electrochemical impedance spectroscopy (EIS) and differential pulse voltammetry (DPV) were the techniques used for the detection of PSA. The electrodes were found to be selective in bovine serum albumin, glucose and cysteine and stable when 50 DPV scans were run. Electrodes gave good % recovery when human serum was spiked with different PSA concentrations.Thesis (MSc) -- Faculty of Science, Chemistry, 202
A critical analysis of the factors influencing knowledge sharing in Indian family owned businesses in South Africa
Get PDFIt is commonly believed that family businesses have formed the backbone of many economies around the globe and that they have been the predominant form of enterprise that has given rise to some of the most famous multinational enterprises. Family businesses contribute to the wealth creation in most economies and conservative estimates suggest that 65% to 80% of all businesses worldwide are owned and managed by families. In South Africa, Indian family owned businesses contribute more to employment than any other family business. There is a general perception amongst South Africans that Indian family owned businesses are more successful and that this success is continued from one generation to the next. Intrigued by this “phenomenon” for many years, the researcher decided to investigate it. The perspective adopted for this research was to look at the research problem from a knowledge management discipline viewpoint, in general, with a specific focus on knowledge sharing and Indian family owned businesses. The purpose of this study is to critically analyse the factors that influence the effectiveness of knowledge sharing in Indian family owned businesses. So the research answered the question: How do Indian family owned businesses in South Africa share their knowledge to ensure the continued success of their businesses through succeeding generations? A positivist research paradigm and philosophy was adopted for this research together with a quantitative research approach using survey research as the research strategy of choice. After conducting an extensive literature review, the next step was to develop and formulate a theoretical model, and flowing from the model and prior research, a research instrument was developed and administered to a qualifying sample of Indian family owned businesses in South Africa. Structural equation modelling was used as the principal mode of statistical analysis to measure the relationships amongst the variables in the model proposed in this study. After analysing the empirical data, the following key factors were identified as statistically significant in being determinants of knowledge sharing in Indian family owned businesses in South Africa: organisational culture, learning organisation, and leadership. These findings serve to contribute to the existing literature within the fields of knowledge management and family business. This study will richly contribute to research-based evidence of the factors that influence knowledge sharing in Indian family owned businesses. The outcomes will allow existing and emerging family businesses to ensure the future success of their enterprises from one generation to the next by embracing the empirical findings of this research and thus ultimately contribute to the future success of the family business as a whole.Thesis (PhD) -- Faculty of Commerce, Management, 202
The Economic Freedom Fighters and Politics of Populism: Enhancing Political Participation, or a Threat to Democracy?
No full textThis study presents a novel approach to understanding the economic freedom fighters (EFF) role in South African politics. The party has been called populist, fascist, and a threat to South Africa's democracy. This study was conducted through virtual ethnography research on the role of the EFF in South Africa's politics and presents the research findings here to understand if the EFF is merely populist, a threat to democracy, or encouraging citizens' political participation. The study's findings indicate that the EFF uses populist stances to attract supporters and voters to the party. But unlike the views of some commentators and scholars, the study presents different findings regarding the EFF's populist attitudes in the country's democracy. While some see such populist stances as a threat to democracy, the study views it as the party's advantage, among others, to encourage citizen political participation
The centralization and racialization of language policy: implications for the ‘below'
Get PDFThe significance of language policies cannot be overlooked, particularly in countries where political ideologies influence perceptions about the use of various languages in various domains. Due to political influence certain languages are regarded as ‘languages of the state’and others are perceived to be ‘languages in the state’. Language practices during apartheid in South Africa were very influential in deciding the plight of indigenous African languages. During this period, indigenous African languages were subjected to suppression, wherein an exoglossic lan-guage policy remained intact. Mekoa (2020) explicates that language was used as an instrument of domination or subjugation during apart-heid and colonization. Mekoa (2020) further indicates that in South Afri-ca, indigenous African languages were denigrated and marginalized through legislative structures of the apartheid government
Ithumbu
No full textIthumbu is a unique neckband traditionally worn by young men in isiXhosa-speaking communities. This wide collar neckband, measuring approximately six inches in width, is meticulously crafted with horizontal bands adorned with beads in navy, white, red, and turquoise blue, each edged with black amaso beads. The design of Ithumbu not only reflects the cultural values and aesthetic preferences of isiXhosa-speaking groups but also symbolises the wearer's social identity and status within the community.Purchased from Mrs Joan BrosterForms part of: Walter Sisulu University Beadwork Collectio
Iphoco
No full textThe symbolic necklace features three flat bead tabs arranged in a chevron design, worn solely for decorative purposes. It holds great significance within the entlombeni ritual, particularly for young men and women. Each tab carries a sense of tradition and cultural symbolism, reflecting the patterns of ancestral heritage and community bonds. When individuals wear this necklace during the entlombeni celebration, they not only adorn themselves with its beauty but also honour their cultural roots and the timeless customs that bind them as a community.Purchased from Mrs Joan BrosterForms part of: Walter Sisulu University Beadwork Collectio
Iphoco
No full textThis necklace is adorned with four flat bead tabs, each meticulously etched with a triangular design. This geometric shape is emblematic of a hut, a symbol that transcends mere aesthetic appeal to imbue the item with cultural significance. The necklace serves not only as an adornment but also as a gender-neutral symbol, worn by both women and men. This piece exemplifies the intersection of artistry, symbolism, and social practice in isiXhosa-speaking cultural groups.Purchased from Mrs Joan BrosterForms part of: Walter Sisulu University Beadwork Collectio
Ubulunga bempungutye
No full textThe necklace is a ceremonial neckband, comprising dual strands of white beads, culminating in a single pearl button. This adornment is further embellished with the pelts and furs derived from a jackal. Notably, this neckband transcends gender boundaries, being universally worn by both males and females. This piece not only serves as a decorative accessory but also signifies cultural and perhaps ritualistic importance, warranting further investigation into its origins, symbolism, and role within isiXhosa-speaking people who utilise it.Purchased from Mrs Joan BrosterForms part of: Walter Sisulu University Beadwork Collectio
Ubulunga obusisiyaca obunentsimbi
No full textThe fringe is a traditional accessory consisting of a necklet of white beads adorned with a fringe of long white hairs, sourced from the tail of a heifer cow known as "inkomo yobulunga" in the isiXhosa-speaking community. This unique cluster of long white hairs resembles a necklace and is often paired with bead streamers. The fringe holds cultural significance and is traditionally worn by individuals such as students, priests, and witch doctors within the community.Purchased from Mrs Joan BrosterForms part of: Walter Sisulu University Beadwork Collectio