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Perceptions regarding shared value within the South African mining industry

  • Authors: Khubana, Talifhani
  • Date: 2021-04
  • Subjects: Automation , Business planning , Gold mines and mining -- South Africa
  • Language: English
  • Type: Doctoral theses , text
  • Identifier: http://hdl.handle.net/10948/51710 , vital:43365
  • Description: Mining has been a key driver of socioeconomic change, economic growth and environmental impact for decades. However, the industry’s volatility and its negative social and environmental effects are sources of concern. In this context, the study investigated the stakeholders’ perceptions of Shared Value (SV) within the mining industry of South Africa. This included establishing antecedents and outcomes of SV within the South African mining industry. The study also aimed to fill the research gap and contribute to the existing body of knowledge regarding the mining industry and SV in South Africa. The comprehensive literature review in this study included discussion on the overview of the South African mining industry, theories related to SV, theoretical perspectives on SV, and the experiential studies supporting the study’s hypothetical model. The empirical investigation conducted by means of a survey was undertaken under the unprecedented conditions of COVID-19 pandemic. The primary data was statistically examined in six phases: exploratory factor analysis (EFA); Cronbach’s alpha; descriptive statistics; Pearson’s product correlation; and regression analysis. The ANOVA was also conducted to determine the influence of demographic factors on SV perceptions. The empirical results confirmed that automation and innovation (through three pillars, namely, innovation for value chain inclusivity, automation and business model innovation, infrastructure development) and employment conditions are the antecedents of SV. The study illustrated three approaches of SV: reconceiving the product/service and markets, reimagining value chain productivity and development of the enabling environment. Furthermore, the study revealed competitive advantage and sustainability performance as the outcomes of SV. This study makes a notable contribution throughout management and strategy practices as it provides insightful guidelines for stakeholders to understand how to adapt and enforce SV strategies, while empirical results could also be utilised by the government as a guide to formulate policies and strategies relating to the mining industry. , Thesis (DPhil) -- Faculty of Business and Economic Sciences, Business Management, 2021
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  • Date Issued: 2021-04

The protection of children during assert forfeiture procedure

  • Authors: Khunou, Lesego
  • Date: 2021-04
  • Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Children's rights
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/51207 , vital:43221
  • Description: As South Africa was transitioning into a new democracy there was an upsurge of organised crimes in the country. In the pursuit of tackling the rise of organised crimes in South Africa which would destabilise the country's economy, the Prevention of Organised Crimes Act was introduced however the act was not only for organised crime, it was for crimes such as money laundering, racketeering and gang activities amongst other crimes. , Thesis (LLM) -- Faculty of Law, Criminal and Procedural Law, 2021
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  • Date Issued: 2021-04

The representation of women in selected isiXhosa drama books

  • Authors: Klaas, Sibusiso
  • Date: 2021-04
  • Subjects: Women in literature , Xhosa drama -- 20th century -- History and criticism , Xhosa drama -- 21st century -- History and criticism , Pragmatics , Discourse analysis , Mothlabane, H. E. (Hlumela Elephylet), 1953- -- Criticism and interpretation , Ngewu, L. L. (Lubabalo Livingstone), 1950-2012 -- Criticism and interpretation , Buzani, Nompumezo -- Criticism and interpretation
  • Language: English
  • Type: thesis , text , Masters , MA
  • Identifier: http://hdl.handle.net/10962/177672 , vital:42845
  • Description: The current study focused on the representation of women in isiXhosa drama books. The aim of the study was to understand how women are represented in these post-1990 dramas written by both female and male authors. Furthermore, the study aimed to look at whether the authors took note of developments made by African women in a broader context such as social, political, spiritual and economic spheres. The study followed a pragmatic approach which is useful to analyse drama, the meanings and the events related to situations. A discourse analysis was also applied as it is difficult to separate it from pragmatics. This means that the study outlined the correlation of pragmatics with discourse analysis and drama. Four isiXhosa books were selected which are Iinkunzi ezimbini by Hlumela Mothlabane 1994, Yeha mfazi obulala indoda 1997 and Kuphek’amadoda kupheth’abafazi We-ena! 2007 by Lubabalo Livingstone Ngewu and Imida by Nompumezo Buzani 2016. Episodes from the four selected isiXhosa drama books were identified. Upon identifying the episodes, they were categorised in to themes in order to highlight the representation of women in the books. This was done using a qualitative research method because it useful to be used in natural setting to understand meanings and social life. Many themes were identified in the four selected isiXhosa drama books. The dominating themes are women who are educated, employed and do not tolerate ill treatment. This shows that the authors in a way are paying attention to the events occurring post-1990 as some of these were not popular pre-1990. The study acknowledges that there is limited research conducted that analyses drama books from both male and female authors. Therefore, future studies could look into this. , Thesis (MA) -- Faculty of Humanities, School of Language & Literatures, Education, 2021
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  • Date Issued: 2021-04

The application and outcomes of action research as a team development intervention

  • Authors: Kloppers, Paul
  • Date: 2021-04
  • Subjects: Teams in the workplace , Teams in the workplace|xTraining of , Management -- South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/51721 , vital:43366
  • Description: An action research design was used to develop a team development intervention to determine the effect of the team development intervention on team functioning, as considered within a postmodern paradigm. A team of nine members agreed to participate in this study. For the purpose of this study, the researcher targeted an existing (intact) team who was already operating as a team within the work context. Therefore, convenience sampling (purposive) was used to select the relevant team. Data was collected using focus group sessions. The initial intention was to record these sessions to allow for collecting verbatim data that would aid the process of data analysis. However, due to participant concerns regarding confidentiality, the researcher suggested introducing a co-facilitator who would record proceedings by making process notes. The additional benefit of this approach included observation data that was obtained during the focus group sessions. A nine-step model was used as a guideline to conduct the focus group discussion and an intervention in the form of a team workshop was designed. The workshop, consisting of three integrated sessions, was implemented and the effect thereof determined by conducting a follow-up session with the team. The data collected from the focus group session before as well as after the workshop was processed and interpreted using thematic analysis. Issues of trustworthiness and data authenticity was dealt with during the focus group sessions by means of reciprocal feedback loops. The teambuilding workshop that was informed by the focus group input, focused on creating awareness around communication (interpersonal), behaviours driven by team values (interpersonal), as well as managing focus and energy (team processes). The team reported that the style and content of the workshop was apt and that the process was a good learning experience. This seems to support research suggesting that team building has a positive effect on developing interpersonal relationships, which could then benefit organisational performance. The results are discussed in relation to theory and suggestions are proposed for future research. , Thesis (MCom) -- Faculty of Business and Economic Sciences, Industrial Psychology, 2021
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  • Date Issued: 2021-04

Factors influencing the automation of procurement processes at Higher Education Institutions in South Africa

  • Authors: Kock, Yolandi
  • Date: 2021-04
  • Subjects: Automation , Business logistics , Industrial procurement
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/51732 , vital:43367
  • Description: The main objective of this research was to evaluate the factors that influence the automation of procurement processes at Higher Education Institutions in South Africa. This was appropriate due to the important role that procurement plays in the day to day activities in the higher education environment and the need to fully automate procurement systems to assist in cost saving efforts and process efficiency. The study employed the survey method in the collection of data and questionnaires were the main data collection instrument. Seventy (70) respondents, who all form part of the Purchasing Consortium of Southern Africa (PURCO SA) were targeted to participate in the empirical study. Initial review of the topic revealed limited research into automated procurement systems at higher education institutions in South Africa, but indicated that universities in countries like Ghana, Italy, Kenya and Zimbabwe were more advanced in terms of automation. The study achieved its purpose by reaching both the main and the secondary research objectives successfully, highlighting the factors that influence the automation of procurement processes. The analysis further revealed time and cost savings as well as process efficiencies when using automated procurement systems. The study concludes with recommendations for Procurement Managers and recommendations on future research. , Thesis (MBA) -- Faculty of Business and Economic Sciences , Business Administration, 2021
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  • Date Issued: 2021-04

Rheology behaviour of slurries as a function of particle size and ion concentration

  • Authors: Kondlo, Princess Kholiwe
  • Date: 2021-04
  • Subjects: Port Elizabeth (South Africa) , Eastern Cape (South Africa) , South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/53333 , vital:45141
  • Description: In this work, the rheological properties of alumina slurries milled to different particle sizes were investigated. Viscosity increases as the particle size decreases. When increasing amounts of calcium hydroxide, strontium hydroxide or barium hydroxide are added, the viscosity first goes down and then goes up. This can be explained in terms of changes in pH and changes in ionic strength impacting on the surface potential of the particles in suspension. Adding the same concentration of different cations results in different viscosities, with the order being (from high to low viscosity) Ba>Sr>Ca. Effects of partial dissolution of and structural changes to the alumina particles at high pH cannot be excluded. In order to better understanding the different effects, it was attempted to measure the zeta potential of the slurries at different pH values. This resulted in highly positive zeta potential values over the complete pH range, without the observationof an iso-electric point. This does not fit to the observed changes in rheology and contrasts withliterature data. One explanation would be that the measurement system used is unsuitable to yield correct zeta potential values for the materials under investigation. , Thesis (MSc) -- Faculty of Science, Department of Chemistry, 2021
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  • Date Issued: 2021-04

Motivation to learn science and make sense of the concept of malleability through the traditional blast furnace in a grade 9 Physical Science class

  • Authors: Kudumo, Wilfred Peter
  • Date: 2021-04
  • Subjects: Science -- Study and teaching (Secondary) -- Namibia -- Kavango West , Metals -- Effect of high temperatures on , Blast furnaces , Ethnoscience -- Namibia -- Kavango West , Ubuntu (Philosophy) , Culturally relevant pedagogy , Motivation in education -- Namibia -- Kavango West , Continuity Argumentative Theory (CAT)
  • Language: English
  • Type: thesis , text , Masters , MEd
  • Identifier: http://hdl.handle.net/10962/177262 , vital:42804
  • Description: The current situation of teaching and learning science in Namibia is of great concern since it does not seem to take into consideration learners’ socio-cultural backgrounds. As a result, learners are finding that science is not relevant to their everyday life experiences and hence are not motivated to learn it. This is compounded in part by the fact that the Namibian curriculum seems to be silent on how science teachers should include learners’ socio-cultural backgrounds, for example, local or indigenous knowledge in their teaching repertoires. It is against this background that in this study I explored how mobilising the cultural practice of a traditional blast furnace (mudukuto) as an approach enables and/or constrains learners’ motivation to learn science and make sense of the concept of malleability. This is a qualitative case study underpinned by a combination of interpretive and Ubuntu paradigms. It was carried out in a rural school in Namibia, Kavango West Region, where I am currently teaching. The participants in the study were grade 9 learners and one expert community member. Focus group interviews, participatory observation, learners’ reflections, and stimulated recall interviews were used to gather qualitative data. Vygotsky’s socio-cultural theory was used as a theoretical framework and Ogunniyi`s Continuity Argumentative Theory (CAT) was used as analytical framework or lens to analyse the data. A thematic approach to analyse data was employed. That is, qualitative data were analysed inductively to come up with sub-themes and themes. The findings of the study revealed that the traditional furnace motivated the learners involved in this study to learn science and learners were able to extract science concepts on malleability from the traditional practice. The implication for this study is that when science is related to learners’ daily life or real-world experiences, they are enabled to bridge the gap from what they learn at home or in the community with school science. The study thus recommends that teachers should make an effort to integrate local or indigenous knowledge and practices to make science accessible and relevant in their classrooms. , Thesis (MEd) -- Faculty of Education, Education, 2021
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  • Date Issued: 2021-04

Best practice psychosocial–cultural care guideline for primary caregivers of couples in the Talensi and Nabdam districts of Ghana experiencing infertility

  • Authors: Kuug, Anthony Kolsabilik
  • Date: 2021-04
  • Subjects: Caregivers -- Infertility -- Ghana , Couples -- Infertility -- Ghana
  • Language: English
  • Type: Doctoral theses , text
  • Identifier: http://hdl.handle.net/10948/51264 , vital:43258
  • Description: Infertility remains a major clinical and social problem, affecting approximately one in every ten couples. The implications of infertility range from physical abuse to denial of family property, divorce, psychological problems, such as withdrawal, anxiety and depression to social isolation, scorn, rejection and stigmatisation. The health of infertile couples needs holistic attention because, while their medical and surgical needs are addressed to correct physical and physiological barriers of infertility, their psychological and emotive needs, which constitute the psychosocial aspects of infertility, need to be addressed as well. The current study explored and described the experiences of couples with infertility and primary caregivers who rendered care to couples. The study aimed to develop a best practice psychosocial-cultural care guideline for primary caregivers to enhance the management of couples experiencing infertility in Talensi and Nabdam districts of the Upper East Region in Ghana. The study followed a qualitative design while making use of explorative, descriptive contextual and interpretive ethnographic approaches. The research populations comprised couples experiencing infertility and the primary caregivers who cared for them, consisting of public health nurses and midwives. The research study comprised three phases. In Phase 1, semi-structured interviews, narrative sketching and storytelling were used to collect data on experiences of couples with infertility while semi-structured interviews were used to explore and describe the experiences of primary caregivers who cared for them. The interviews were transcribed and analysed using Tesch’s eight steps of data analysis to make sense of the data collected. The researcher ensured the validity of the study by conforming to the Lincoln and Guba’s approach to trustworthiness by using an independent coder to validate the researcher’s coding. In Phase 2, an integrative literature review was conducted to identify previous guidelines and systematic reviews regarding psychosocial–cultural care of infertility. Relevant guidelines and reviews were selected and critically appraised. Data were extracted and synthesised for the development of a best practice guideline for psychosocial–cultural care of couples experiencing infertility. An independent appraiser critically appraised relevant guidelines to ensure trustworthiness. In phase 3, the findings of Phases 1 and 2 were integrated to formulate a draft best practice guideline for psychosocial–cultural care of couples experiencing infertility. The guideline was reviewed by a six-member expert panel and modified based on their recommendations, suggestions and comments leading to the finalisation of the best practice psychosocial–cultural care guideline for primary caregivers of couples experiencing infertility in the Talensi and Nabdam districts in Ghana. , Thesis (PhD) -- Faculty of Health Sciences, 2021
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  • Date Issued: 2021-04

The combating of gang activities in terms of the Prevention of Organised Crime Act 121 of 1998

  • Authors: Lande,Sonwabise
  • Date: 2021-04
  • Subjects: Crime Prevention- South Africa , Law-- South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/55175 , vital:49580
  • Description: This treatise discuses, the effectiveness of the Prevention of Organised Crime Act (POCA), specifically, Chapter Four of the Act. POCA was enacted for the purposes of tackling, inter alia, the threat posed by money laundering, racketeering and criminal gang activities. Moreover, POCA was enacted to supplement the common law, specifically the doctrines of common purpose, conspiracy, public violence as well as incitement. In this respect, the legislative framework in line with POCA- aimed at addressing money laundering and racketeering have contributed significantly in addressing such crimes. However, the same cannot be said about its effect on dealing with criminal gang activities. The criticisms which have been raised for the increase of criminal gang activities are that the sentences provided for in Chapter Four of POCA are viewed as inadequate in terms of deterrence because they are too lenient. The sentences do not hold gang leaders accountable but rather focus on foot soldiers. Likewise, POCA is similar to and does not expand the common law. This treatise aims to demystify the issues relating to criminal gang activities in South Africa. It investigates the extent to which Chapter Four of POCA adds significant value to the common law in respect of criminalising criminal gang related activities. It concludes and make recommendations on how criminal gang activities can be tackled while upholding South Africa’s constitutional values.bstract text. , Thesis (LLM) -- Faculty of Law, Criminal and Procedural Law, 2021
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  • Date Issued: 2021-04

The application of the prevention and combating of corrupt activities act

  • Authors: Landman, Johan Abraham
  • Date: 2021-04
  • Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Corrupt practices--South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/51201 , vital:43223
  • Description: The study will address the application of the Prevention and Combatting of Corrupt Activities Act (PCCAA) and the various offences that is created by PCCAA and how the coutls apply PCCAA in corruption cases. This study will compare the crimes that was created under the repealed Corruption Act with the crimes created under PCCAA, lt will further show how the courls interpreted the application of PCCAA. The infamous case of former police commissioner, Jacki Selebi will be discussed and how the Supreme coutl of Appeal applied section 4 of PCCAA. lt will furlher explore why section 5 of PCCAA needs amendment to be able to prosecute foreign public officials under PCCAA. The PCCAA Amendment Bill is currently before parliament to amend section 5 of PCCAA. This study will further explore how corruption is dealt considering hospitality and gifts. This must be the most unnoticed form of bribery that occurs which PCCAA does not specifically clearly addresses. This will shorlly be compared to the German Penal Code. All legislation has strengths and weaknesses, including PCCAA. This study will explore those strengths and weaknesses and how they can be solved. lt will explore loopholes within PCCAA and the strategy of 'unbundling' corruption and its effects. lt has been stressed by the courts that corruption is a very serious crime and therefore the reporting thereof is impoftant. This study will discuss the reporling of corruption in terms of section 34 of PCCAA. This study will fufther show through South African case law that the courls are too lenient when sentencing individuals guilty of corruption and that the minimum sentence needs to be the starting point for sentencing offenders. The courts should not have discretion to deviate from this minimum sentence given how serious the courls express corruption to be and the devastating effects it has. , Thesis (LLM) -- Faculty of Law, Criminal and Procedural Law, 2021
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  • Date Issued: 2021-04

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Nature conservation, protected areas and local communities : the Tsitsikamma National Park

  • Authors: Le Fleur, Yvette Adele
  • Date: 2021-04
  • Subjects: National parks and reserves -- South Africa -- Eastern Cape , Protected areas -- Management , Programme of Work on Protected Areas , Human ecology -- South Africa -- Tsitsikamma , Nature conservation -- Citizen participation
  • Language: English
  • Type: thesis , text , Masters , MSocSc
  • Identifier: http://hdl.handle.net/10962/177247 , vital:42803
  • Description: Since the twentieth century, protected areas, usually in the form of nature reserves or national parks, have become increasingly more dominant as an international conservation strategy. An important factor in protected area management is the relationship between protected areas and its surrounding communities. Historically, the fortress conservation model based on the exclusion of human use and occupation prevailed in relation to protected areas. It is known that this approach brought with it many social and environmental injustices to local communities living in or adjacent to parks. However, a shift in conservation thinking occurred towards the end of the twentieth century, where it has increasingly been advocated for a more participatory approach in protected area management. South Africa has signed the international Convention on Biological Diversity that promotes a participatory approach to nature conservation, which is also reflected in the country’s national laws and policies. In relation to the literature and the lens of political ecology, this thesis sets out to assess in what ways and to what extent the participatory approach has been embraced by South Africa’s conservation authorities. As a case study, it looks at the Tsitsikamma National P ark ( incorporated into the larger Garden Route National Park). In order to get insight on h ow the participatory approach plays itself out at the T NP and what the nature of local communities’ relationship with the park is, this study looks at the aspects of (1) local communities’ socio-economic conditions, (2) their relationship with their natural environment, (3) their perception of nature conservation and (4) their perception of tourism. Then, taking all these aspects into account, (5) how local communities, in general, perceive their relationship with the p ark and its authorities. This study looked at the communities of Kurland, Nature’s Valley, Covie and Storms River. It shows in concurrence with other studies, that despite progressive laws and policies that express the intention of the South African state and SANParks to embrace the participatory approach, its implementation o n t he g round is riddled with challenges. , Thesis (MSocSc) -- Faculty of Humanities, Athropology, 2021
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  • Date Issued: 2021-04

Psychologists perceptions of English-speaking South African’s potential meaning attached to post-traumatic stress disorder symptoms

  • Authors: Le Roux, Carmen Jade
  • Date: 2021-04
  • Subjects: Post-traumatic stress disorder -- South Africa
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/51276 , vital:43259
  • Description: South Africa is characterised by high levels of trauma and multiple forms of violence exposure which are said to be causal factors in post-traumatic stress disorder (PTSD). Culture is imperative in constructing the reality of individuals as it provides the templates which are used to describe, understand, predict, and control the world within which individuals exist. Culture is regarded as being influential on the ways in which individuals ascribe meaning and make sense of their traumatic experiences and symptoms. Culture is also integral to the healing process as it influences and guides the illness narrative created by individuals. The aim of this study is to understand the potential meanings attached to PTSD symptoms and the role of culture on these meaning ascriptions. These meanings are explored through the perception of Mental Healthcare Practitioners. The study uses qualitative methodology; specifically, an exploratory and descriptive design. The sample is identified through non-probability purposive sampling, and the data is collected through semi-structured interviews. The data is analysed using thematic analysis which identified major themes of understanding and acceptance. These themes followed a non-linear and interactive process, and present participants ascribing varying meanings to their trauma experience, PTSD symptoms and/or PTSD diagnosis. These meanings are discussed through the interpretivist lens of social constructionism. The findings of the study identified that individuals within the white English-speaking cultural group tend to understand their traumatic experience, their symptoms of PTSD and/or their PTSD diagnosis from an individualistic frame of reference, whilst individuals from the coloured English speaking cultural group tend to understand their traumatic experience, their symptoms of PTSD and/or their PTSD diagnosis from a collective frame of reference. , Thesis (MA) -- Faculty of Health Sciences, 2021
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  • Date Issued: 2021-04

Customer experience in the grocery retail sector in South Africa

  • Authors: Leander, Donovan
  • Date: 2021-04
  • Subjects: Customer services -- Management , Consumer satisfaction , Grocery trade-Case studies
  • Language: English
  • Type: Master's theses , text
  • Identifier: http://hdl.handle.net/10948/51743 , vital:43368
  • Description: Customer Experience (CX) is the measurement of interaction between a customer and an organisation over a long time. Customer Experience is a strategic marketing effort that aims to improve the customer journey and touchpoints with the organisations’ product and services. It involves the complete customer journey – starting with the search process, purchase and after-sale processes of the experience. Google Trends identified that online users from all over the world search the key words “Customer Experience” more, often than not. This study considered a reliable measure for Customer Experience. This study endeavours to explore Customer Experience in the grocery retail sector in South Africa to put customer needs at the centre of their business. Extensive research on Customer Experience exist, however Customer Experience in the grocery retail sector in South Africa has not been measured using Professor Phillip Klaus’s new scale in CX. A broad literature review was conducted and Factors influencing Customer Experience in the grocery retail sector were identified and explored. The academic literature selected for the study is founded in the academic theories of Experienced Utility and Service-Dominant (S-D) Logic. The literature formed the foundation for the conceptual model that included the proposed Brand Experience (BE), Service Experience (SE) and Post-purchase / Consumption Experience (PE) independent factors. This treatise formed part of a bigger study of Customer Experience undertaken, using a questionnaire distributed via email, which 858 respondents completed. The study was quantitative. Data analysis included the use of descriptive and inferential statistics, Exploratory Factor Analysis, Reliability and Validity of Measurement, One-Sample T-Tests and the measurement of relationship between the factors. There is a need for companies to explore and understand CX in order to differentiate themselves strategically and to improve the bottom line. This study contributes to the body of knowledge by using academic literature and theories to explore Customer Experience in the grocery retail sector in South Africa. BE involves the customers’ perception of the brand and influence the customer’s experience. Customers look for clues to help inform their SE and expect companies to know their product and basic service promise. The findings of the study identified that BE and SE had a positive and significant influence on each other. Customers will show signs of commitment to an organisation during a positive PE. Similarly, the findings concluded that PE and CX had a statistical and practical significant positive correlation. PE was highlighted as a key determinant of CX. A positive CX will lead to a repeat purchases. Marketing managers need to take into account these factors when formulating CX strategies to influence the bottom line of the organisation. This study concludes with managerial recommendations that the grocery retail sector can implement to influence CX. Some of the recommendations include the appointment of a professional to manage all social media content; training and development opportunities for employees to enhance customer and shopping experience; and the use of customer data from loyalty programmes to promote personalised offers. In summary, a continuous review of CX with the emphasis on PE is recommended, to understand the changing needs of customers in the grocery retail sector. , Thesis (MBA) -- Faculty of Business and Economic Sciences, Business Administration, 2021
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  • Date Issued: 2021-04

A theoretical study of alkoxyl radical and radical cation mediated cyclisation reactions in unsaturated alkanols

  • Authors: Lee, Peter Mattison Clarke
  • Date: 2021-04
  • Subjects: Gqeberha (South Africa) , Eastern Cape (South Africa) , Density functionals
  • Language: English
  • Type: Doctoral theses , text
  • Identifier: http://hdl.handle.net/10948/52130 , vital:43430
  • Description: A large part of this computational study focussed on selectivity patterns for 4-penten- 1-oxyl radical 1,5- and 1,6-cyclisations and for those of analogous 5-hexenyl, 4- penten-1-aminyl, 4-penten-1-iminyl and 3-phenylpropan-1-oxyl radicals. The study furthermore included cyclisation reactions of the radical cations of 4-penten-1-ol and 3-phenylpropan-1-ol. Calculations were performed for all applicable species involved in the two cyclisation modes studied, i.e. 1,5- and 1,6-cyclisation. These species included radical and radical cation precursors, as well as relevant radical transition state structures and radical adducts. All cyclisation systems investigated used the Density Functional Theory (DFT) functional B3LYP with a combination of eight basis sets. Each basis set used was a progressively higher level of theory than B3LYP/6-31G* which was used as a starting point. Cyclisations for unsubstituted species, e.g. the 4-penten-1-oxyl radical 1,5- and 1,6-cyclisations, were also simulated using the ωB97X-D and ωB97X-V functionals which account for dispersive effects. The same set of eight basis sets were used with these two functionals. , Thesis (PhD) -- Faculty of Science, School of Computer Science, Mathematics, Physics and Statistics, 2021
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  • Date Issued: 2021-04

An investigation into the current state of web based cryptominers and cryptojacking

  • Authors: Len, Robert
  • Date: 2021-04
  • Subjects: Cryptocurrencies , Malware (Computer software) , Computer networks -- Security measures , Computer networks -- Monitoring , Cryptomining , Coinhive , Cryptojacking
  • Language: English
  • Type: thesis , text , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/178248 , vital:42924
  • Description: The aim of this research was to conduct a review of the current state and extent of surreptitious crypto mining software and its prevalence as a means for income generation. Income is generated through the use of a viewer's browser to execute custom JavaScript code to mine cryptocurrencies such as Monero and Bitcoin. The research aimed to measure the prevalence of illicit mining scripts being utilised for “in-browser" cryptojacking while further analysing the ecosystems that support the cryptomining environment. The extent of the research covers aspects such as the content (or type) of the sites hosting malicious “in-browser" cryptomining software as well as the occurrences of currencies utilised in the cryptographic mining and the analysis of cryptographic mining code samples. This research aims to compare the results of previous work with the current state of affairs since the closure of Coinhive in March 2018. Coinhive were at the time the market leader in such web based mining services. Beyond the analysis of the prevalence of cryptomining on the web today, research into the methodologies and techniques used to detect and counteract cryptomining are also conducted. This includes the most recent developments in malicious JavaScript de-obfuscation as well as cryptomining signature creation and detection. Methodologies for heuristic JavaScript behaviour identification and subsequent identification of potential malicious out-liars are also included within the research of the countermeasure analysis. The research revealed that although no longer functional, Coinhive remained as the most prevalent script being used for “in-browser" cryptomining services. While remaining the most prevalent, there was however a significant decline in overall occurrences compared to when coinhive.com was operational. Analysis of the ecosystem hosting \in-browser" mining websites was found to be distributed both geographically as well as in terms of domain categorisations. , Thesis (MSc) -- Faculty of Science, Computer Science, 2021
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  • Date Issued: 2021-04

The impact of translanguaging and acculturation towards implementation of the Incremental Indigenous African Languages programme in former Model-C schools (Alfred Nzo West District, Eastern Cape)

  • Authors: Lepheana, Jeremia
  • Date: 2021-04
  • Subjects: Translanguaging (Linguistics) , Acculturation -- South Africa -- Eastern Cape , Model C schools (South Africa) , Multilingual education -- South Africa -- Eastern Cape , Multicultural education -- South Africa -- Eastern Cape , Incremental Indigenous African Languages Programme
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/177236 , vital:42802 , 10.21504/10962/177236
  • Description: This thesis explores the possibilities of multilingual language instruction within multi-ethnic classrooms in former Model-C schools shaped by multiple discursive practices. The researcher reviews current research on multilingualism and teaching and proposes strategies for overcoming the English prescriptivism, and monolingual mind-set in education. The research reported in this dissertation is both a qualitative and quantitative study, which sought to investigate the patterns of translanguaging in classrooms in five primary schools in Alfred Nzo West district (Maluti sub-district). In quantitative research, questionnaires were used to gather data from teachers and learners. In the qualitative research methodology, document analysis method of collecting data was employed. Purposive sampling was the major sampling method to ensure that relevant data was collected. Language in Education Policy formed the major analytical framework for this study. The aim of the study was to investigate the impact of translanguaging as it is used by teachers and learners in the class in selected primary schools in Alfred Nzo West district. The research focuses on how primary school learners and their teachers engage with teaching and learning, and the strategies that teachers use to promote the use of two or three languages in classrooms to help learners to understand content and concepts in English, Sesotho and isiXhosa as there are multi-ethnic classrooms in the district. The dissertation concludes with some reflections on the findings, implications of the findings for future research and training, and recommendations to use the languages of school children as rich resources for teaching and learning. The Socio-cultural theory formed the theoretical framework that guided this study. According to Vygotsky’s theory of cognitive development, children learn through social interaction that includes collaborative and cooperative dialogue with someone who is more skilled in tasks they are trying to learn. The findings of this study show the misunderstandings of the LiEP, translanguaging and multilingual education. The study also shows the lack of confidence in the ability of African languages to provide quality education. , Thesis (PhD) -- Faculty of Humanities, School of Languages, 2021
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  • Date Issued: 2021-04
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