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Comparative study of the effect of silver nanoparticles on the hexokinase activity from human and Trypanosoma brucei
No full textA century of IsiXhosa written poetry and the ideological contest in South Africa
No full textThe central argument of this inter-disciplinary study is that IsiXhosa written poetry of 1912 – 2012 is a terrain of the struggle between the contending dominant ideologies of Segregation, Apartheid and Charterism (post-Apartheid); and the subordinate/ subaltern ideologies of Africanism, Charterism (pre-democracy), Pan- Africanism, Black Consciousness Movement and other post Apartheid ideologies. The study highlights the mutual relationship between the text and the context by focussing on the ideological contest which manifests itself in both form and structure (i.e. aesthetic ideology) and the content (i.e. authorial ideology) of the poetry of different epochs between 1912 and 2012. The study is located within the framework of Antonio Gramsci’s theory of cultural construction. Gramsci postulates that ideology and culture play a significant role in the process of asserting hegemony. Important concepts that constitute Gramsci’s theory of praxis are: ideology, culture, hegemony, organic intellectuals and both ideological and repressive state apparatuses. The first chapter presents the problem, the objectives, the methodology, and the scope of the study. The second chapter presents Gramsci’s theory of cultural construction and the work of scholars who developed his theory further. The tool that is employed for analysis and interpretation of textual significations of IsiXhosa written poetry is the revolutionary aesthetics, which is proposed by Udenta. The third chapter analyses and interprets literature of the epoch of 1912-1934 and exposes the contest between Segregation and Africanism ideologies. The fourth chapter contextualises and analyses the literature of 1934 – 1948, the second phase of contestation between Segregation and Africanism. The fifth chapter deals with literature of the first and second halves of the Apartheid epoch (1948 - 1973). The Apartheid ideology contested with the Africanist ideology which transformed into the Charterism ideology in 1955. In 1960 Pan-Africanism ideology and in 1969 Black Consciousness Movement ideologies entered the contest. The sixth chapter examines literature of the period 1973 – 1994 which is the second phase of the Apartheid epoch that ends with the “glasnost” period of 1990 - 1994. The seventh chapter studies literature of the democracy period of 1994 – 2012. The eighth chapter is the summary and general conclusion. The illumination of the nexus between culture and ideology during the past century (1912 - 2012) will provide insights that will assist us in addressing the challenges we face during the democracy period, and in the development on Arts and Culture in general, and literature in particula
Financial Accounting II-Module I: FAC20B1
No full textExamination on Financial Accounting II ModuleI: FAC20B
Optimising the teaching-learning environment of first-year nursing students at a public nursing college
No full textTransition from secondary to tertiary education presents unique challenges for first-year nursing students, similar to those experienced by other first-year students at any other tertiary education institution. Nursing students’ experiences are further complicated by the fact that nursing education incorporates almost equal amounts of time for class attendance and clinical practice placement. As a facilitator of learning for first-year nursing students, the researcher had observed how some new students were apprehensive and uncertain in their first year of study at the college. These and other observations, including those of the researcher’s colleagues, prompted the researcher to conduct a study to obtain information on how the first-year students at her college experience their first year of the nursing programme. This study, therefore, examined the experiences of first-year nursing students at a public college in the Eastern Cape Province enrolled in the four-year diploma programme that leads to registration as a nurse and midwife with the South African Nursing Council (SANC). Insights into these experiences were used to develop guidelines for nurse educators to optimise the teaching-learning environment of these students.Kotzé’s (1998) nursing accompaniment theory was used as a theoretical grounding for the study. The study followed a qualitative, explorative, descriptive and contextual design. Two of the college’s campuses were sampled for the study. One campus was in a more rural area and the other in a more urban area. Data was collected using purposive sampling of second-year students who were requested to think back to their first year of the nursing programme. Semi-structured, in-depth, face-to-face, individual interviews were conducted. Interview sessions were digitally recorded and then transcribed verbatim by the researcher. The researcher and an independent coder analysed the transcriptions using Tesch’s method of data analysis. The study’s trustworthiness was demonstrated through the criteria of credibility, transferability, dependability, confirmability and authenticity. The results indicated that students had positive and negative experiences in their first year of the nursing programme. Literature control placed the study’s findings within the existing body of knowledge with regard to students’ experiences of their first year. The students’ suggestions on how to enhance first-year nursing students’ experiences were incorporated into the guidelines that were developed for nurse educators to optimise the teaching-learning environment of first-year nursing students at this college
Analytical Chemistry I : ACHP11P1
No full textExamination on Analytical Chemistry I : ACH11P3, June 201
The influence of contemporary leadership styles on the job satisfaction and organisational commitment of SME employees
No full textSmall and medium-sized enterprises (SMEs) have the potential to enhance economic growth and innovation, create jobs, assist large businesses in the distribution of goods and services, and stimulate competition in the economy. However, SMEs face several challenges that influence their longevity, growth, and success. Poor leadership has been highlighted as influencing the job satisfaction and organisational commitment levels of employees, ultimately contributing to employee turnover and SME failure. This study mentions the dishonest, selfish and corrupt nature of modern leadership and identifies a gap in the literature regarding the practice of leadership, especially among South African SMEs. Against this background, the primary objective of this study was to assess the levels of several contemporary leadership styles displayed by SME owners, namely Servant, Authentic, Ethical and Participative leadership, and to investigate their influence on the Job satisfaction and Organisational commitment levels of employees working in SMEs in the Eastern Cape. A quantitative research paradigm was adopted and a sample was drawn from employees working in SMEs in the Eastern Cape Province. The selection of the sample was done using judgement and convenience sampling. A cross-sectional survey using a structured questionnaire was undertaken, and a total of 236 usable questionnaires were returned on which to undertake the statistical analysis. In order to assess the validity of the dependent variables, namely Job satisfaction and Organisational commitment, tests for uni-dimensionality (using factor analysis) were undertaken. An exploratory factor analysis (EFA) was undertaken on the independent variables and four factors were extracted, which corresponded with the theoretical dimensions of Relational leadership, Participative leadership, Servant leadership and Ethical leadership. The items intended to measure Authentic leadership did not load as expected, but a factor named Relational leadership emerged as a result of several items measuring Ethical and Servant leadership loading together. All the independent and dependent variables returned Cronbach’s alpha coefficients of greater than 0.7. As such, sufficient evidence of validity and reliability for the scales measuring the dependent and the independent variables was provided. The data collected was also subjected to several statistical analyses. These included descriptive statistics, Pearson’s product moment correlations, multiple regression analyses, and analysis of variance (ANOVA). The majority of respondents agreed that they experienced Job satisfaction in the SMEs in which they were employed and that they were committed to these businesses. Relational leadership returned the highest mean score while the lowest score was returned for Participative leadership. The majority of respondents also agreed that the SME owners for whom they worked displayed the leadership styles under investigation. All the independent variables were significantly and positively correlated with the dependent variables, Job satisfaction and Organisational commitment. In addition, significant positive correlations were reported between all the independent variables. The multiple regression analyses revealed that three of the four leadership styles investigated in this study had a significant positive influence on both the Job satisfaction and Organisational commitment levels of employees working in the SMEs. These leadership styles were Servant, Relational, and Ethical leadership. In addition, the results of this study showed that Job satisfaction mediates the relationship between Servant, Relational and Ethical leadership, and the Organisational commitment displayed by employees working in SMEs, but does not mediate the relationship between Participative leadership and Organisational commitment. The findings also showed that the demographic variables investigated in this study had no influence on how SME employees perceived the Servant and Relational leadership behaviours of SME owners. However, the results showed that female respondents perceived SME owners as displaying a Participative leadership style more so than male employees did. The findings also revealed that employees with a post-matric qualification perceived that SME owners displayed higher levels of Participative leadership than those without a post-matric qualification. In addition, the ANOVA revealed that White respondents perceived that SME owners exhibited more ethical behaviours than Black respondents did. Given the findings of this study, several recommendations were put forward to enhance the levels of Servant, Relational and Ethical leadership among SME owners, and to ultimately enhance the levels of Job satisfaction and Organisational commitment experienced by their employees. As such SME owners were provided with practical recommendations on how to attract and retain employees by adopting appropriate leadership behaviours. Employees play a vital role in achieving the goals and vision of a business. Satisfied and committed employees put more effort into ensuring the goals and vision of the business are achieved, contributing to business success and ultimately the economy as a whol
Public Management & Procurement III : FPM3113
No full textExamination on Public Management & Procurement III : FPM3113, June 201
Research and Information IV : REIM4/0
No full textExamination on Research and Information IV : REIM4/0, June 201
Developing a GIS based method for school site identification in the rural Eastern Cape
No full textHistorically, South Africa has not had equal education in terms of funding, curriculum or physical resources and structures. These issues are still present in contemporary South Africa and none more so than the issues surrounding “mud schools”. Recently the Department of Basic Education (DBE) implemented a plan to eradicate inappropriate school structures using the Accelerated Schools Infrastructure Delivery Initiative program (ASIDI). Questions around effective placement of schools are now being asked. Using interviews and analysis of literature, this research developed criteria needed to determine how rural school sites are selected. Geographical Information Systems (GIS) was used to determine if current sites are in the most appropriate areas. The results of the research included a unique set of Eastern Cape criteria as well as an analysis of the current site selection methods used by the DBE. It also revealed that most of the schools are being constructed in acceptable areas. The main result that emerged from the research was that schools will be placed in areas where they are needed. Developing site selection criteria is still needed as South Africa seeks to reduce the education gap between rich and poor schools
Carbonate petrography and geochemistry of BIF of the Transvaal supergroup : evaluating the potential of iron carbonates as proxies for palaeoproterozoic ocean chemistry
No full textThe subject of BIF genesis, particularly their environmental conditions and ocean chemistry at the time of deposition and their evolution through time, has been a subject of much contentiousness, generating a wealth of proposed genetic models and constant refinements thereof over the years. The prevailing paradigm within the various schools of thought, is the widespread and generally agreed upon depositional and diagenetic model(s) which advocate for BIF deposition under anoxic marine conditions. According to the prevailing models, the primary depositional environment would have involved a seawater column whereby soluble Fe²⁺ expelled by hydrothermal activity mixed with free O₂ from the shallow photic zone produced by eukaryotes, forming a high valence iron oxy-hydroxide precursor such as FeOOH or Fe(OH)₃. An alternative biological mechanism producing similar ferric precursors would have been in the form of photo-ferrotrophy, whereby oxidation of ferrous iron to the ferric form took place in the absence of biological O₂ production. Irrespective of the exact mode of primary iron precipitation (which remains contentious to date), the precipitated ferric oxy-hydroxide precursor would have reacted with co-precipitated organic matter, thus acting as a suitable electron acceptor for organic carbon remineralisation through Dissimilatory Iron Reduction (DIR), as also observed in many modern anoxic diagenetic environments. DIR-dominated diagenetic models imply a predominantly diagenetic influence in BIF mineralogy and genesis, and use as key evidence the low δ¹³C values relative to the seawater bicarbonate value of ~0 ‰, which is also thought to have been the dissolved bicarbonate isotope composition in the early Precambrian oceans. The carbon for diagenetic carbonate formation would thus have been sourced through a combination of two end-member sources: pore-fluid bicarbonate at ~0 ‰ and particulate organic carbon at circa -28 ‰, resulting in the intermediate δ¹³C values observed in BIFs today.
This study targets 65 drillcore samples of the upper Kuruman and Griquatown BIF from the lower Transvaal Supergroup in the Hotazel area, Northern Cape, South Africa, and sets out to explore key aspects in BIF carbonate petrography and geochemistry that are pertinent to current debates surrounding their interpretation with regard to primary versus diagenetic processes. The focus here rests on applications of carbonate (mainly siderite and ankerite) petrography, mineral chemistry, bulk and mineral-specific carbon isotopes and speciation analyses, with a view to obtaining valuable new insights into BIF carbonates as potential records of ocean chemistry for their bulk carbonate-carbon isotope signature. Evaluation of the present results is done in light of pre-existing, widely accepted diagenetic models against a proposed water-column model for the origin of the carbonate species in BIF. The latter utilises a combination of geochemical attributes of the studied carbonates, including the conspicuous Mn enrichment and stratigraphic variability in Mn/Fe ratio of the Griquatown BIF recorded solely in the carbonate fraction of the rocks. Additionally, the carbon isotope signatures of the Griquatown BIF samples are brought into the discussion and provide insights into the potential causes and mechanisms that may have controlled these signatures in a diagenetic versus primary sedimentary environment. Ultimately, implications of the combined observations, findings and arguments presented in this thesis are presented and discussed with particular respect to the redox evolution and carbon cycle of the ocean system prior to the Great Oxidation Event (GOE). A crucial conclusion reached is that, by contrast to previously-proposed models, diagenesis cannot singularly be the major contributing factor in BIF genesis at least with respect to the carbonate fraction in BIF, as it does not readily explain the carbon isotope and mineral-chemical signatures of carbonates in the Griquatown and uppermost Kuruman BIFs. It is proposed instead that these signatures may well record water-column processes of carbon, manganese and iron cycling, and that carbonate formation in the water column and its subsequent transfer to the precursor BIF sediment constitutes a faithful record of such processes. Corollary to that interpretation is the suggestion that the evidently increasing Mn abundance in the carbonate fraction of the Griquatown BIF up-section would point to a chemically evolving depositional basin with time, from being mainly ferruginous as expressed by Mn-poor BIFs in the lower stratigraphic sections (i.e. Kuruman BF) to more manganiferous as recorded in the upper Griquatown BIF, culminating in the deposition of the abnormally enriched in Mn Hotazel BIF at the stratigraphic top of the Transvaal Supergroup. The Paleoproterozoic ocean must therefore have been characterised by long-term active cycling of organic carbon in the water column in the form of an ancient biological pump, albeit with Fe(III) and subsequently Mn(III,IV) oxy-hydroxides being the key electron acceptors within the water column. The highly reproducible stratigraphic isotope profiles for bulk δ¹³C from similar sections further afield over distances up to 20 km, further corroborate unabatedly that bulk carbonate carbon isotope signatures record water column carbon cycling processes rather than widely-proposed anaerobic diagenetic processes