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An effort to study the influence of tides on the longitudinal variation of vertical E× B drift over the African sector:

  • Authors: Habyarimana, Valence , Habarulema, John B , Mungufeni, Patrick , Uwamahoro, Jean C
  • Date: 2020
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/149026 , vital:38797 , https://doi.org/10.1016/j.jastp.2020.105338
  • Description: Meteorological processes such as tides influence ionospheric variability through vertical coupling. For the first time, we have used data from Communication Navigation Outage and Forecasting System (C/NOFS) satellite from 2008–2015 to develop a Neural Network (NN) vertical E×B drift model over the African region, with inclusion of a proxy of tides as one of the inputs together with other physical and geophysical inputs. Two models (with and without tidal proxy input) were developed for both East and West African sectors. To derive the tidal proxy, we first calculate the 60-day running means per year which were subtracted from the actual vertical E×B drift measurements to obtain a set of residuals. The purpose of the subtraction was to remove long-term trends in vertical E×B drift that could potentially alias into tides.
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  • Date Issued: 2020

An ergonomics approach to understanding perceived barriers to the provision of high-quality healthcare: a Sarah Baartman District clinics case study

  • Authors: Card, Jason
  • Date: 2020
  • Subjects: Medical care -- South Africa -- Eastern Cape , Public health -- South Africa -- Eastern Cape
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/170536 , vital:41933
  • Description: Background:The complex nature of healthcare systemsoftenresultsinthe emergence of context-specific barriers that limit the ability for healthcare stakeholders to ensure safe and effective care delivery. In low-to middle-income (LMIC) countries, such as South Africa (SA), limited financial, material and human resources coupled withpoor infrastructure and poor public health determinants, includingpoverty andpoor education, affectthe ability to maintain andimprove on quality care outcomes.Understanding what different stakeholders perceive as barriers, and if these barriers are understood at different levels, is therefore important when attempting to mitigate the risk for unsafe or inefficient care delivery. Human Factors and Ergonomics (HFE) adoptssystems and participatory approaches for the exploration, analysis, and design of socio-technical systems to optimize both human wellbeing and system performance.The barriers to safe and effective healthcare delivery, from an HFE perspective, are not known in the South African context, particularly in parts of the Eastern Cape Province. Elucidatingthesebarriers, even if self-reported,may guidefuture efforts aimed at mitigating risks.The purpose of this study, therefore,wasto explore and highlight the perceived systemic barriers to local and national healthcare delivery, within the Sarah Baartman District in the Eastern Cape Province of South Africa.Methods: Ashort discussion aimed at introducing HFE and components of the Work Systems Model, followed by a survey that captured participant demographics, job characteristics, the perceived national and local systemic barriers, and proposed solutions, was administered withhealthcare stakeholders from 14 primary healthcare facilities and 1 department office within the Sarah Baartman District.Participants (n=120) included management, pharmacy, administration, maintenance, community-and home-based care and nursing staff.Data from the surveys were thematically analysed and categorised according to components of the work system model (Carayon, 2009) and respective workgroup.Results: The findings revealed many overlapping,systemic barriersthat includedshortages of staff, poor management and leadership, a lack of equipmentand basic necessities, poor infrastructure, patient complexity,and high workloads. The results further indicate that the way in which the reported barriers affect worksystem interactionsand performance are unique to different workgroups. Stakeholders iiproposedthat,among others, the absorption of contract workers, the provision of training and adequate human and medical resources and the maintenance of facilities may mitigate the barriers and improve healthcare delivery.Conclusion: The findings highlight a myriad of perceived systemic barriers perceived in the Sarah Baartman district, some of which were fundamental for the effective function of any healthcare system. These barriers may have wide-spread implications for stakeholders at all levels, ultimately affecting the performance, satisfaction and safety and the quality of care. It is especially important to consider these barriers in light of the COVID-19 epidemic, which emerged throughout this study and the major threat it presents to South African healthcare systems. Future research should aim to explore how these barriers interact to contribute to processes and outcomes, as well as explore the perceptions at provincial and national levels in order to better identify areas and strategies for improvement.
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  • Date Issued: 2020

An evaluation of programme management with reference to inner -city problem buildings: The case of Nelson Mandela Bay Metropolitan Municipality ,South Africa

  • Authors: Conradie, Hendrik Francois , Shaidi,Walter
  • Date: 2020
  • Subjects: Municipal government -- South Africa -- Port Elizabeth , Finance,Public --South Africa --Port Elizabeth
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10948/46670 , vital:39607
  • Description: This research study is qualitative and cross-sectional in nature. Programme management by South African city governments is investigated and evaluated, as related to inner-city decay and problem (derelict; hijacked; dilapidated; overcrowded) buildings. A case study approach, focusing on the Nelson Mandela Bay Municipality in Port Elizabeth, South Africa, is utilised to understand the phenomenon, and to answer the research question. The significant challenge of inner-city and central business district problem buildings in major South African cities has prompted the study; no scientific research has previously been conducted or published on this topic The study started out with this research question, asked in a case study context: to what extent are programmes dealing with inner-city problem buildings and decay managed effectively by city government in South Africa? In the literature review the researcher focused on programme management theory, emphasising the usefulness of project management principles and practice in public sector programme management contexts. In a subsequent chapter the applicable constitutional and legislative frameworks were presented. The researcher developed, as outcome, strategic remedial legal options available to city governments when dealing with transgressing owners of problematic buildings. Problem building by-laws were dealt with in detail. A qualitative research approach, including semi-structured in-depth interviews with political and managerial leaders at the case study city government, assisted the researcher in effective data generation. Data analysis was performed with vigour, based on thematic content analysis.relevant coding practices were utilised in analysis and interpretation of data.
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  • Date Issued: 2020

An evaluation of social sustainability practices in an agri-based private company in the Eastern Cape

  • Authors: Ferreira, Anton William
  • Date: 2020
  • Subjects: Social responsibility of business -- South Africa -- Eastern Cape , Food law and legislation -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape , Private plot agriculture -- South Africa -- Eastern Cape , Employee rights -- South Africa -- Eastern Cape , Employee attitude surveys -- South Africa -- Eastern Cape , Communication in personnel management -- South Africa -- Eastern Cape
  • Language: English
  • Type: text , Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10962/122920 , vital:35371
  • Description: The concept of sustainability has received considerable attention over the last few decades (Scoones, 2007). International awareness and demands for sustainable development have pushed the sustainable narrative into the forefront of developmental goals. The Brundtland Report of 1987, released by the United Nations entitled “Our Common Future” resulted in the classic modern definition of sustainable development. Agriculture is the primary source of food, shelter and fibre for the world and therefore has a leading role to play in the realisation of a sustainable future (Van Calker, Berentsen, Giesen and Huirne, 2005). Most sustainability research in agriculture has adopted a particular scale and dimension, leading to a host of definitions and methodologies for its assessment (Hayati, 2017, Janker and Mann, 2018, Latruffe, Diazabakana, Bockstaller, Desjeux and Finn, 2016, Smith and McDonald, 1998). Different approaches to assessing sustainable agriculture have developed in hand with various conceptual methods resulting in a lack of a common understanding of what sustainable agriculture means (Janker and Mann, 2018, Smith and McDonald, 1998). Agriculture has a leading role to play in sustainable development in the South African context; however, commercial agriculture in South Africa has been associated with human rights violations as well as unsustainable social practices and exploitation of employees (Mather, 2007, Muller, Vermeulen and Glasbergen, 2012b). This research was conducted in an agri-processing company that had expanded rapidly and been experiencing high absenteeism and increased conflict in the work environment in an attempt to identify how many of the chosen indicators of on-farm internal social sustainability were present in the company. The literature review helped to contextualise the subject of sustainability, agricultural sustainability, agricultural social sustainability and various methods for assessing agricultural sustainability. The subject of agriculture social sustainability within the South African context was expanded upon, and a framework was selected from the literature to develop the aims of this research. The Barrientos and Visser (2013) framework had been utilised in evaluating social sustainability in the South African agricultural context before, and when compared with relevant literature was deemed appropriate for this research. Through the use of a case study approach, thirty employees were interviewed on a one on one basis with close ended questions. Data was collected through the use of an odd-numbered Likert scale and simple descriptive statistics were used to answer questions regarding which socially sustainable on-farm internal indicators, identified in the literature and in the chosen framework, occurred in the company in question. The research looked to further critically evaluate the aspects of social sustainability that were implemented by the company and discuss the challenges relating to those identified indicators that were not implemented. Finally, the research made recommendations to improve the on-farm internal social sustainability of the company in question. The results of this research showed that out of the ten indicators of on-farm internal social sustainability that were relevant in the framework, five were present in the company in question and five were absent. Those indicators that were present were: contracts, wages, benefits, communication with management and adequate representation. Indicators that were not present included health and safety, employee wellbeing, the level of discrimination, the level of harsh treatment and employee decision making. It was apparent from the results that there are many challenges to implementing on-farm internal socially sustainable policies and practices in the company. Chief amongst these challenges was communication with employees concerning policies that have been implemented and the information that is available to the employees regarding these policies. The company at the centre of this research should ensure that policies are put in place that helps to convey information to employees and ensure that the policies are implemented efficiently and effectively. It was recommended that the company initiate a Human Resources division that would be responsible for communication and the implementation of policies to increase on-farm internal social sustainability. By increasing social sustainability in the workplace, the company should be able to increase its efficiencies and effectiveness in a competitive global market. The researcher is aware that the findings of this research are not generalizable and are specific to the company in question both in terms of scale and location. Further research is needed to determine the impact of individual indicators and the weighting of each indicator in a specific environment. Further research should be conducted in a company that is in a similar industry and has similar staff demographics to the company at the centre of this research, as the scale of measure will influence the results.
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  • Date Issued: 2020

An evaluation of the cytotoxic activities of novel artemisinin derivatives: towards targeted therapies for triple-negative breast cancers (TNBC)

  • Authors: Kajewole, Deborah Ifeoluwa
  • Date: 2020
  • Subjects: Uncatalogued
  • Language: English
  • Type: thesis , text , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/163329 , vital:41029 , doi:10.21504/10962/163329
  • Description: Thesis (PhD)--Rhodes University, Faculty of Science, Biochemistry and Microbiology, 2020.
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  • Date Issued: 2020

An evaluation of the effectiveness of communication between the education district office and schools in Nelson Mandela Bay

  • Authors: Brown, Xenophon
  • Date: 2020
  • Subjects: Communication in organizations , Communication in management
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: http://hdl.handle.net/10948/50491 , vital:42203
  • Description: This study focuses on an evaluation of communication effectiveness between the school administration office in Nelson Mandela Bay and its representative schools in advancing the business case of school development and heightened learner experience in line with the national development goal. The research uses a qualitative research approach to gather rich insights into the challenges, opportunities and problems that heighten and affect the quality of communication methods, channels and the roles of communication that the interviewed stakeholders representing both the district and schools depict and understand within the communication processes and methods used. Fourteen interviewees were identified using a judgemental and purposive sampling technique. They were identified from the Nelson Mandela Bay district office and schools within the district. Findings from the study reveal that the critical areas of concern include the roles of communication, stakeholder roles in the communication process, methods of communication, and challenges in communication effectiveness. While schools and the district office share the responsibility for providing quality education, it is critical that an effective communication strategy, which embraces computer-mediated communication as a supplementary tool, should be adopted to ensure that this shared mandate could be achieved.
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  • Date Issued: 2020

An evaluation of the integrative propositional analysis model for complex policy environments:The case of the Drakenstein housing policy, 2010-2017

  • Authors: De Wee, Guswin
  • Date: 2020
  • Subjects: Housing policy -- South Africa -- Drakenstein
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10948/46681 , vital:39608
  • Description: This study evaluates the Integrative Propositional Analysis (IPA) (Wallis, 2015), and its usefulness as a complementary model for analysing and evaluating public policy and policy implementation. The IPA model is evaluated in this longitudinal study and seeks to establish the validity of the correlation between the historically implemented results of the Drakenstein Local Municipality Housing Policy against the complexity and systemicity scores of the policy between 2010 and 2017. The IPA model predicts that the higher the complexity and systemicity of the internal logic structure of a policy, the more useful and effective the policy will be, and for its successful implementation. The model is premised on the idea that policies are more useful when they have some level of structure and has been accepted widely for some time (Wallis, 2018). The study thus is an evaluation of the usefulness of the model as complementing policy analysis and evaluation for successful implementation based on the policy internal structure. The research study provided a brief historical background on the development of the IPA and locates it as a ‗science two‘ model based on its systems thinking and Complexity Theory properties to policy analysis. An extensive literature review was undertaken, and secondary data was gathered and analysed to gauge the policy‘s historical success. In examining the Drakenstein‘s housing policy outcomes for evaluating the IPA model, the study adopted both qualitative and quantitative approaches for this exploratory descriptive report. The diagnosis indicated that the revised targets, introduced during the implementation altered the vision of the policy. This allowed for an analysis of the low structure of the policy and its inability to create integrated sustainable human settlements.
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  • Date Issued: 2020

An evaluation of the organisational performance of members of the district based support team in inclusive education – a case study of the Grahamstown circuit

  • Authors: Dyantyi, Khona
  • Date: 2020
  • Subjects: Education -- South Africa -- Grahamstown -- Administration
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10948/47868 , vital:40391
  • Description: Inclusive learning around the world takes into account both the rights of learners and how education systems can adapt in just and equitable ways to respond to learner differences. White Paper 6, launched by the Department of Education in 2001, has been praised in this regard as a groundbreaking post-Apartheid strategy that provides the vision and basis for turning the fragmented and unequal education system in South Africa into one that is inclusive. This represents a fundamental change from an academic placement process throughout the education system to an influx of educational support services. This study specifically explores how one Eastern Cape District Based Support Team perceives its roles and responsibilities. To investigate these viewpoints, a qualitative research model was used within an interpretive framework. For the choice of participants in the study, purposeful sampling methods were used. Data was collected and analysed using thematic data analysis through semi-structured individual interviews and a single focus group interview. The following key findings were revealed in the results. On the one hand, there are significant factors that allow the efficacy of District Based Support Teams as enabling agents of inclusion to be supported. These include: • A substantial degree of alignment between inclusive education theory and current inclusive education policy; • Enabling inclusive education policy and guidelines; • The interpretation of inclusive education by research participants and the goals of inclusive education are aligned with the policy they see as a framework to direct and encourage their practice; • The District Based Support Team's view of their position is basically that of support service with the primary responsibility to allow inclusive learning to be implemented. On the other hand, structural debilitating factors substantially weaken these teams ' effectiveness. These include:South African School and Administration Management System • Early identification of obstacles and admission age • Budget • Support tools/ equipment • Human Resources - human and physical resources • The unproductive inclusion of special schools as resource centres in the District Based Support Teams. • Poor infrastructure • Coordination and cooperation with the National DoE to enforce IE policies. Years after its adoption, the key challenge remains the translation of encouraging policy language into practical action at all levels of the process within the broader context of the failure of Inclusive Education Policy to have any significant impact on the education system. At the district level, it needs innovative leadership across the Specialised Education Support Unit (including District Based Teams and Special School Resource Centers) and firm management within it to allow organisational coordination and intersectoral cooperation within an integrated community context.
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  • Date Issued: 2020

An examination of practices and experiences of teacher educators in the supervision of a national early childhood home based programme

  • Authors: Annatolia, Misi
  • Date: 2020
  • Subjects: Early childhood education -- Zimbabwe
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10948/49362 , vital:41695
  • Description: Zimbabwean teacher educators are, by the nature of their job description, required to supervise student teachers doing teaching practicum for the 0-3 home based programme. However, analysis of supervision reports of the home based programme indicates some inconsistencies in comments made by different supervisors, whereby the descriptors and supervision overall scores do not tally. It seems the supervision of the home based teacher education programme is not being implemented as expected. Hence, the purpose of this qualitative case study was to examine practices and experiences of teacher educators in the supervision of a National Early Childhood Development Home Based Teacher Education Programme (NECDHBTEP). The objective of the study was to address the key question: ‘What are the practices and experiences of teacher educators in the supervision of a NECDHBTEP. In addressing the question, the researcher used supervision as a conceptual framework. The theoretical framework which informed the study was Contextual Supervision (CS) which has its philosophical foundations in constructivism, beneficence and justice. Purposive sampling was employed in the study where two primary teachers’ colleges were selected. From each college, ten teacher educators were selected for semi-structured interviews, two focus group discussions and document analysis on teacher educators’ supervision reports. Triangulation of the data was done so as to enhance its trustworthiness. Three major themes emerged from the study, namely, the influence of home context, experience of supervisors on NECDHBTEP and supervision approaches. The study discovered that the home context, to some extent, influences supervision of the NECDHBTEP. The study also established that teacher educators face multiple challenges when supervising student teachers on the ECD home based programme. The researcher made some recommendations from the findings. One of the recommendations was for colleges to develop a specific supervision instrument for the home based ECD supervision (0-3 years category). Furthermore, there is need for Zimbabwean primary teachers’ colleges to engage in rigorous in-service training for lecturers who are not knowledgeable about the NECDHBTEP.
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  • Date Issued: 2020

An exploration of formative assessment in primary school Natural Sciences classrooms

  • Authors: Mgoqi, Nomvuyo
  • Date: 2020
  • Subjects: Education, Elementary -- South Africa , Science -- Study and teaching (Elementary) -- South Africa , Competency-based education -- South Africa , Curriculum-based education -- South Africa , Science teachers -- Training of -- South Africa , Educational tests and measurements -- South Africa
  • Language: English
  • Type: text , Thesis , Masters , MEd
  • Identifier: http://hdl.handle.net/10962/124167 , vital:35572
  • Description: This research investigated formative assessment in primary school Natural Sciences classrooms. The intention was to explore how teachers use formative assessment strategies to raise classroom standards and to foster higher order cognitive development of learners. My interest in the study was influenced by constant poor achievement of South African learners in literacy and specifically in scientific literacy reported in various international and national benchmark tests. Vygotskian theory of the zone of proximal development was used to provide critical insight into formative assessment processes. Further theoretical lenses included Wylie and Lyons’ (2013) ‘Ten dimensions of formative assessment’ work for reviewing formative assessment strategies and Dalton’s (2003) ‘New Bloom’s Taxonomy’ for insight into cognitive development in classroom contexts. Influenced by the above mentioned reports, a qualitative case study of seven primary school teachers in Cape Town, Western Cape, South Africa was conducted. Underpinned by an interpretive paradigm and driven by the desire to achieve an in-depth understanding of the case under study, three techniques for data generation were employed. The first technique was semi-structured interviews. The second technique of data generation was through lesson observations including pre-lesson discussions and stimulated recall interviews. Observations were conducted to record teachers’ formative assessment practices and report how they use the formative assessment strategies to support student learning or ‘shifting’ their zone of proximal development through formative assessment practices. The third technique was document analysis of lesson plans, teaching and learning activities and assessment tasks worksheets of the two teachers observed. Documents were analysed to gain insights and understanding of how teachers prepared teaching and learning activities and assessments to support learner cognitive development. There were four data analysis phases. Phase I was an analysis of the semi-structured interviews. These were analysed to get a sense of teachers’ perspectives, experiences and challenges regarding formative assessment practices. In order to get a better sense of the quality of formative assessment, classroom observations were analysed using the lens of Wylie and Lyon (2013). This was analysis Phase II. Phase III made use of Dalton’s ‘New Bloom’s Taxonomy’ to gain insight into the role of formative assessment in supporting low, medium and higher order cognitive development. This phase was the document analysis and involved a review of the lesson plans, teaching and learning activities and formative assessment tasks. Phase IV further explored teachers’ experiences regarding implementation of formative assessment. Phase IV is different from Phase I in that it was not only looking at what teachers highlighted as challenges but also at challenges experienced during the lesson observations. This analysis was done across data sources, that is, semi-structured interviews, lesson observations and stimulated recall interviews. Findings from the first set of data showed that teachers viewed formative assessment implementation as a useful practice in the teaching and learning process. However, the diverse views showed lack of clarity of the purpose and definition of formative assessment. The results also revealed some effective attributes of formative assessment were observed during lesson observations at the time of the investigation. However, the results showed that clarifying goals, feedback and classroom collaborations were weakly implemented. These seem to be strategic entry points to begin strengthening the effective implementation of formative assessment classrooms. Supporting teachers regarding use of formative assessment techniques could be one of the means of helping teachers in collecting evidence of student learning. The teachers highlighted some challenges they experienced when implementing formative assessments. Hindrances to implementing effective formative assessment practice reflected structural, technical and attitudinal challenges. The study recommends that since formative assessment is a fundamental part of teaching and learning, teachers need more support and time for reflection to improve their implementation of effective formative assessment. The study also revealed that teachers need enough time to be able to implement effective formative assessment practices. This requires curriculum developers and administrators to revisit curriculum coverage in terms of breadth and depth and to give more time for the implementation of effective formative assessment practices.
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  • Date Issued: 2020

An exploration of how Grade 3 Foundation Phase teachers develop basic scientific process skills using an inquiry-based approach in their classrooms

  • Authors: Nhase, Zukiswa
  • Date: 2020
  • Subjects: Elementary school teaching-- South Africa , Elementary school teachers -- South Africa , Elementary school teachers -- In-service training -- South Africa , Science -- Study and teaching (Elementary) -- South Africa , Learning, Psychology of , Cognition in children , Inquiry-based learning -- South Africa , Active learning -- South Africa , Pedagogical content knowledge -- South Africa , Educational change -- South Africa , Socio-cultural theory
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10962/145181 , vital:38416
  • Description: Some studies have looked at Foundation Phase teachers’ perspectives on the teaching of science in this phase. Such studies have highlighted various challenges on the teaching of science in the Foundation Phase. They pointed out issues such as large class numbers, lack of resources and lack of science knowledge from Foundation Phase teachers. However, none of these studies have looked at how Foundation Phase teachers are using an Inquiry-Based Approach in their classrooms instead few studies have looked at the Foundation Phase teachers’ perspectives about scientific inquiry in this phase. Even though many scholars have presented several challenges to the teaching of science both at secondary and primary level, the argument is strongly made that Foundation Phase learners should be exposed to the learning of science. Generally, children at the Foundation Phase level naturally enjoy observing and thinking about nature; exposing learners to science develops positive attitudes towards science; the use of scientifically informed language at an early age influences the eventual development of scientific concepts; children can understand scientific concepts and reason scientifically; and science is an efficient means for developing scientific thinking. It is within these arguments and discussions that this interpretive case study research sought to explore the Pedagogical Content Knowledge of four Foundation Phase teachers in developing the Scientific Process Skills using an Inquiry-Based Approach in their classrooms and subsequently, the significance of this research study. The socio-cultural theory, Topic Specific Pedagogical Content Knowledge, Zaretskii’s six conditions for development during mediation and the principles of an Inquiry-Based Approach were used as analytical lenses in this research. To use an Inquiry-Based Approach, generally teachers have to understand its principles and know how to develop basic Scientific Process Skills while teaching the science content. In the Foundation Phase, the Natural Sciences component or content is embedded in the Beginning Knowledge study area of the Life Skills subject and this can create difficulties for teachers to even recognise the scientific concepts in the Life Skills. The four IsiXhosa female teachers used the home language of learners as the language of instruction to implement an Inquiry-Based Approach in their classrooms. Data were generated in four phases. Phase one was baseline data through document analysis. Three of the phases were directed by the research question asked. Data were generated using questionnaires, interviews (semi-structured and stimulated recall), lesson observations (videotaped) and group reflections and discussions. From the work of Vygotsky, Zaretskii formulated six conditions that can be used to develop learners’ zone of proximal development in learning and these were used as analytical lenses to analyse data to understand how teachers mediated learning and development of Scientific Inquiry in their Grade 3 classrooms. In addition, the principles of an Inquiry-Based Approach were used as analytical lenses as to how teachers implemented the scientific inquiry approach. The categories or components of Topic Specific Pedagogical Content Knowledge were used as analytical lenses as to how these teachers dealt with science concepts or content when using an inquiry-based Approach in their classrooms. Using the home language of learners as an instructional tool, data showed that learners were afforded the opportunity to freely engage in activities and as a result, the context of learning was non-threatening for both teachers and learners. Although learning activities could be improved, teachers created social spaces for learners to take part in learning. In addition, the use of learners’ environments in the observed lessons made it comfortable for learners to act as young scientists. The new knowledge in this research was presented by the use of the adapted analytical tool, which combined diverse components of theory and literature that aligned with each other. The reflection space for the participants did not only afford the participants to discuss about each other’s lessons or experiences in this research, it allowed the participants to engage with the research objectives. The reflection space strengthened the research ethics if this study. Hence, the concept that says, ‘Absenting the absences’. In conclusion, the study thus recommends further professional development spaces that promote community of practice in using an Inquiry-Based Approach in the Foundation Phase.
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  • Date Issued: 2020

An exploration of organizational expectations of different generations of employees during change

  • Authors: Kawana, Susan Mulemwa
  • Date: 2020
  • Subjects: Organizational change -- Psychological aspects , Organizational behavior -- Namibia -- Case studies , Employees -- Psychology -- Namibia , Organizational change -- Namibia -- Case studies , Intergenerational relations -- Namibia , Namibia. Inland Revenue Directorate , Namibia. Customs and Excise
  • Language: English
  • Type: text , Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10962/142398 , vital:38076
  • Description: The aim of this study is to investigate the organizational expectations of different generations of employees at the Ministry of Finance’s Inland Revenue and Customs and Excise Departments of the Republic of Namibia, which are undergoing organizational change processes. The different generations that were included in this study are Baby Boomers, Generation X, and Generation Y. The study explores the different expectations that the generations have in relation to the changes, in terms of leadership style and communication preferences. This study followed a qualitative approach. Quota sampling was used to select twelve participants for the study. The case study was carried out within a postpositivism paradigm. Data was collected by administering semi-structured, face-to-face interviews. The findings of the study indicate that there are generational differences in respect of preferred leadership styles and communication methods during organizational change. Baby Boomers and Generation X preferred a relationshiporiented leadership style, while generation Y preferred a visionary leadership style. Task-oriented leadership style was not the preferred style of any generation. Rather, in the midst of change, it seems there is a preference for relational leadership across all the Generations. In respect of communication, Baby Boomers preferred face-toface methods, Generation X preferred face-to-face and e-mail methods as sources of change communication, while Generation Y preferred a combination of communication methods. In the midst of change, it seems there is a common preference for face-to-face communication across all the Generations. Furthermore, employees generally did not feel ready for the changes. In the light of these findings, recommendations were made to guide change initiatives amongst employees of various generations. The limitations of the study were its sample size and focus on the public sector. For future research, a larger sample could be selected from all regional offices. Similar research can also be done in the private sector. The findings of the study provide an understanding of the experiences and expectations of different generations of employees during organizational change, and contribute to the body of knowledge on generational differences, readiness for change and the management of different generations as different stakeholders.
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  • Date Issued: 2020

An exploration of the overlap between open source threat intelligence and active internet background radiation

  • Authors: Pearson, Deon Turner
  • Date: 2020
  • Subjects: Computer networks -- Security measures , Computer networks -- Monitoring , Malware (Computer software) , TCP/IP (Computer network protocol) , Open source intelligence
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/103802 , vital:32299
  • Description: Organisations and individuals are facing increasing persistent threats on the Internet from worms, port scanners, and malicious software (malware). These threats are constantly evolving as attack techniques are discovered. To aid in the detection and prevention of such threats, and to stay ahead of the adversaries conducting the attacks, security specialists are utilising Threat Intelligence (TI) data in their defense strategies. TI data can be obtained from a variety of different sources such as private routers, firewall logs, public archives, and public or private network telescopes. However, at the rate and ease at which TI is produced and published, specifically Open Source Threat Intelligence (OSINT), the quality is dropping, resulting in fragmented, context-less and variable data. This research utilised two sets of TI data, a collection of OSINT and active Internet Background Radiation (IBR). The data was collected over a period of 12 months, from 37 publicly available OSINT datasets and five IBR datasets. Through the identification and analysis of common data between the OSINT and IBR datasets, this research was able to gain insight into how effective OSINT is at detecting and potentially reducing ongoing malicious Internet traffic. As part of this research, a minimal framework for the collection, processing/analysis, and distribution of OSINT was developed and tested. The research focused on exploring areas in common between the two datasets, with the intention of creating an enriched, contextualised, and reduced set of malicious source IP addresses that could be published for consumers to use in their own environment. The findings of this research pointed towards a persistent group of IP addresses observed on both datasets, over the period under research. Using these persistent IP addresses, the research was able to identify specific services being targeted. Amongst these persistent IP addresses were significant packets from Mirai like IoT Malware on port 23/tcp and 2323/tcp as well as general scanning activity on port 445/TCP.
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  • Date Issued: 2020

An explorative study of Makana local football association coaches characteristics, experiences and needs

  • Authors: Callow, Gavin
  • Date: 2020
  • Subjects: Makana Local Football Association (South Africa) , Football -- Coaching -- South Africa , Football coaches -- South Africa
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/138785 , vital:37672
  • Description: Introduction: Sports participation has been associated with a number of benefits to young athletes, outside of purely physical health. One of the key components of a successful sports talent identification and development program is effective coaching. A foundation of effective coaching is the coach’s knowledge which can be developed through formal, non-formal and informal means of education. The majority of coach education literature has however focused on coaches from developed countries. Limited studies have looked at the educational experiences and needs of South African coaches, particularly football coaches. The purpose of the current investigation is to establish Local Football Association (LFA) coaches’ perceptions of their educational backgrounds and what knowledge they deem important to be effective coaches. Method: A mixed methods approach was used in which (n=25) Makana LFA coaches answered a questionnaire with the aim of identifying their educational histories and what their current educational needs were. A semi-structured interview was also implemented in which some of the respondents (n=4) were asked more in-depth questions around the same topics, to create a more complete coaching profile. Results: The questionnaire responses highlighted that only 8% of the coaches possess a formal coaching qualification and all of the coaches work on a volunteer basis. Previous experience as a player is the chief source of knowledge for Makana LFA coaches. Not having enough available time is the main perceived barrier for 56% of participants to seeking out further educational opportunities. Fundamentals of coaching was selected by 56% of the coaches as a key subject they want to learn more about. Findings from the interview demonstrate that participants coach multiple teams and often have to rely on senior players to take up assistant coach positions, as well as managing their time effectively to work with all their teams. Informal education is the main source of information for the coaches which includes asking for advice, reading coaching manuals or having a mentor. The coaches value all 3 forms of education, however non-formal workshops are favoured. This is due to all of the coaches already having some form of informal learning experience and formal learning opportunities being too costly to pursue. A combination of lectures, practical sessions and group discussions is desired as a delivery method of coaching knowledge. Discussion: The level of coaching qualifications in the LFA is low, this may have significant implications for talent identification and development in the Sarah Baartman region. All the coaches are volunteer coaches, who primarily rely on informal means of coaching education. ‘Time’ was indicated to be a major barrier, to coaches seeking out educational opportunities. Coaches indicated that they would benefit from a coaching program if it took into consideration their needs, such as wanting to learn more about interpersonal and intrapersonal awareness. Conclusion: If local coaching programs are to be effective, they must reflect the educational needs of their community.
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  • Date Issued: 2020

An exploratory study on UNAM’s opportunities of being an entrepreneurial university

  • Authors: Shiimi, Victoria
  • Date: 2020
  • Subjects: Entrepreneurship -- Namibia , Academic-industrial collaboration -- Namibia , Education, Higher -- Aims and objectives -- Namibia , University of Namibia. Innoviation and Development Department , University of Namibia -- Finance , Education, Higher -- Economic aspects -- Namibia , Education, Higher -- Namibia -- Finance
  • Language: English
  • Type: text , Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10962/144912 , vital:38391
  • Description: Universities, especially those publicly funded by the government are at the edge of the economic woes when budget allocation is cut to support their operations. University should not only focus on research and the traditional role of teaching but, to become innovative by creating third stream income generation projects and activities. This would enable them to bridge the gap in financing from the state. The main goal of the study is to explore whether the university has opportunities to become entrepreneurial. The researcher analyzed the study from the perspective of internal capabilities the institution owns and how these capabilities can be applied to create a competitive advantage and external opportunities for the institution. To achieve the objectives of this study, the researcher employed a case study research design approach. The study was embedded in the interprevists paradigm and, following an inductive approach. The study had a population of 14 Centres at UNAM where a sample of 4 Centres was purposively selected to represent the population because they were responsible for research and entrepreneurship activities. Documents review and semi-structured interviews were used to collect secondary and primary data respectively, which helped in the triangulation to avoid data error. These methods also allowed the researcher to ensure credibility, transferability, trustworthiness and external validity. To adhere to all ethical regulations and procedures, the researcher obtained the ethics approval from the Rhodes Ethics Committee, which, was then used to obtain Gatekeeper permission from UNAM. The study found that UNAM has the internal capabilities required that provides them an opportunity to become entrepreneurial. Through its Innovation and Development Department in collaboration with Inceptus, a UNAM commercial owned holding company. The study recommended that UNAM put structures in place, to begin with, all entrepreneurial projects towards securing third stream income as well as expanding research that focuses on leadership and governance.
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  • Date Issued: 2020

An historical analysis of the development of a company as a single enterprise and the impact on group company taxation

  • Authors: Els, Tania
  • Date: 2020
  • Subjects: Taxation -- South Africa , Taxation -- History , Taxation -- Law and legislation -- South Africa , Business enterprises -- South Africa , Business enterprises -- Taxation -- Law and legislation -- South Africa , Corporation law -- South Africa , South Africa. Income Tax Act, 1962 , South Africa. Companies Act, 2008 , Separate legal personality , Group taxation
  • Language: English
  • Type: text , Thesis , Masters , MCom
  • Identifier: http://hdl.handle.net/10962/154241 , vital:39628
  • Description: The company is considered a separate legal entity in both legislation and jurisprudence. The “veil” separating the company and its shareholders is a doctrine entrenched in company law that originated centuries ago. The doctrine is based on conditions that existed during a period that commenced with trading forms less complicated than the corporate groups found today. Trading forms known as guilds could be traced back to 1087, which gradually developed into regulated companies and, in the last century, into the joint-stock company form. The modern era has seen the development of groups of companies carrying on business as economic units. Company law, in regulating business forms, has failed to acknowledge the corporate group as a new business entity. The main purpose of this research was to analyse the origins of the separate legal personality of a company and its relevance for the present corporate group structures. The research aimed to understand company law and jurisprudence in South Africa in relation to the legal personality of a company and a corporate group. The final objective of this reform-orientated doctrinal research thesis was to provide clarity on the need to consider granting separate legal identity to corporate groups in recognition of their economic unity. A historically contextualised analysis was carried out on the development of trading through unregulated forms of businesses to the creation of the company as a regulated entity. The development of the legal persona of a company in legislation as well as jurisprudence was critically analysed in on the context of companies within a corporate group. A case study of a South African corporate group was used to highlight the different characteristics of the companies doing business in the form of a corporate group. The thesis concluded by recommending that legal personality should be extended to include a corporate group in order to facilitate the introduction of a group taxation regime.
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  • Date Issued: 2020

An ideological analysis of the construction of masculinity in the South African superhero comic book, Kwezi

  • Authors: Reyneke, Brendon George
  • Date: 2020
  • Subjects: Mkize, Loyiso, 1987- -- Kwezi , Superheroes -- South Africa , Comic books, strips, etc. -- South Africa , Graphic novels -- South Africa , Masculinity in literature , Violence in literature , Superheroes, Black
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/144533 , vital:38354
  • Description: In 2014, South African artist and comic book illustrator, Loyiso Mkize created Kwezi, South Africa’s first superhero comic book. His comic features the titular Kwezi as a young, black man living alone on the outskirts of Gold City who discovers he has superpowers. Along with Kwezi, the comic is populated by predominantly black African characters – both good and bad. The creation of Kwezi is an important step in the development of comic books in South Africa as it draws from the cultural and physical landscape of the country and speaks to young black people without them having to look outside of the country for superheroes to identify with. Stuart Hall (Hall, 1997, pp. 272-274) asserts that attempts to reclaim the black subject in popular culture tend to go through two phases. In the first phase blackness is liberated from negative representations and is replaced with more positive depictions. Thereafter though, the black subject is produced inside contemporary “regimes of representation”. In this thesis, I will show how Mkize’s representation of Kwezi follows Stuart Hall’s description of the reclamation of black subjectivity. Using narrative theory, visual social semiotics and Thompson’s modes of operational ideology I will show how in his attempt to represent African blackness positively, Mkize overlooks normative genre representations of masculinity and produces a story of a South African that remains unliberated from patriarchy and hegemonic masculinity. Mkize reproduces many of the hegemonic discourses concerning the masculine body, the power difference between male and female characters and subscribes to the justified, violent actions of the masculine superhero. Typically, in superhero comics there is an erasure of the ordinary man in favour of an excessive and powerful one-dimensional masculine ideal (Brown, 1999, pp. 31-32) At the end of my analysis I will show that Kwezi is constructed in this way as a physically strong and muscular, violent and emotionless, self-made man who is in control and overcomes all obstacles.
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  • Date Issued: 2020

An ideological analysis of the construction of the young female action hero as feminist hero in The Hunger Games film franchise

  • Authors: Mathurine, Kim Elizabeth
  • Date: 2020
  • Subjects: Everdeen, Katniss (Fictitious character) , Women superheroes in motion pictures , Hunger Games films , Feminist film criticism , Feminism and motion pictures , Women in motion pictures
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10962/142900 , vital:38174
  • Description: Young female action heroes have recently stepped into the limelight as commercial celebrations of Girl Power in Hollywood action-adventure films. Feminist films studies however have shown that these independent, tough female heroes claimed as feminist, are still constrained in various ways through stereotypical gender roles within the action-adventure genre. This thesis examines these claims through the ideological analysis of the young female action hero Katniss in The Hunger Games film franchise. Building on existing research on female action heroes, the research asks: ‘to what degree can the claim of Katniss as boundary-breaking, feminist hero be validated’? This question is addressed through a textual analysis of the four films of The Hunger Games film franchise, employing conventions of action-adventure genre, narrative analysis, mise-en-scène and cinematography to unmask the characterisation of the female hero. The discussion of the findings, utilising the themes of Love, Violence and Power, reveal both progressive and regressive elements present in the characterisation of Katniss. The findings indicate that while female action heroes can be celebrated for displaying progressive moments of liberated action, they remain constrained within dominant heteronormative gender roles in commercial Hollywood films, undergoing various acts of transformation and recuperation as a means of containing the threat of their transgressive behaviour.
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  • Date Issued: 2020

An improved systems approach as a phytosanitary measure for Thaumatotibia leucotreta (Lepidoptera: Tortricidae) in export citrus fruit from South Africa

  • Authors: Hattingh, Vaughan , Moore, Sean D , Kirkman, Wayne , Goddard, Mathew K , Thackeray, Sean R , Peyper, Mellissa , Sharp, Gary , Cronjé, Paul , Pringle, Ken
  • Date: 2020
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/423700 , vital:72086 , xlink:href="https://doi.org/10.1093/jee/toz336"
  • Description: A systems approach was previously developed for mitigating phytosanitary risk of Thaumatotibia leucotreta (Meyrick) in citrus fruit exported from South Africa, as an alternative to a standalone cold disinfestation treatment. The present study first tested the original systems approach by applying it on a semicommercial scale in 10 Nova mandarin orchards. Fruit were inspected at points in the production, packing, and simulated shipping process, to assess performance of the systems approach. Additional data were obtained from 17 Valencia orange orchards and six packinghouses. In the second part of this study, the systems approach was accordingly revised and improved, consisting of three measures: 1) preharvest controls and measurements and postpicking sampling, inspection, and packinghouse procedures; 2) postpacking sampling and inspection; and 3) shipping conditions. The model quantifying the effectiveness of the systems approach was improved by correcting errors in the original version, updating parameter values and adding a component that provides for comparison with the risk mitigation provided by a standalone disinfestation treatment. Consequently, the maximum potential proportion of fruit that may be infested with live T. leucotreta after application of the improved systems approach is no greater than the proportion of fruit that may be infested after application of a Probit 9 efficacy postharvest disinfestation treatment to fruit with a 2% pretreatment infestation. The probability of a mating pair surviving is also determined. The model enables a priori determination of the required threshold levels for any of the three measures, based on quantification of the other two measures.
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  • Date Issued: 2020

An in silico analysis, purification and partial kinetic characterisation of a serine protease from Gelidium pristoides

  • Authors: Ntsata, Zolani
  • Date: 2020
  • Subjects: Gelidium Proteolytic enzymes
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10353/12076 , vital:39149
  • Description: The aim of this study was to characterize the protease enzyme (s) from red algae. An in silico analysis of red algae genomes was used to identify gene coding for protease. Protease sequences identified from these genomes were examined for conserved domains, active site and structures. The domain search revealed that the identified sequences were from the five classes of protease enzymes. For function inference, the red algae sequences were aligned to identify the catalytic sites, and the tertiary structures were predicted using homology modelling. An in silico analysis provides an indication of the class and potential functions of the enzymes. However, it cannot predict whether the gene is constitutively expressed in the red algae or under which conditions it may be induced, and it cannot determine the kinetic efficiency of an enzyme against various substrate, or the optimum conditions for the protein activity. Attempts to clone and recombinantly express selected red algae proteases, proved unsuccessful, as the available genomes where from red algae species found mainly in Asia, and the designed primers, therefore, did not amplify a corresponding PCR product from the red algae harvested in South Africa. Crude extracts of red algae collected from Kenton-on-Sea, along the East Coast of South Africa, were screened for protease activity using Benzoyl-Arginine-pNitroAnilide (BApNA) as substrate. The proteases detected in the crude extract were purified using ammonium sulphate precipitation and HiPrep DEAE FF 16/10; CM FF 16/10, and HiPrep Q FF 16/10 columns for ion-exchange chromatography. The HiPrep Q FF 16/10 column yielded active protein, which revealed two bands of 11kDa and 17kDa on SDS-PAGE. It was assumed that these bands represented two subunits of the purified protease. Kinetic characterisation of the purified protease revealed a pH optimum of 9, using BApNA as substrate, a temperature optimum at 60ºC, and sensitivity to temperature when stored above 4ºC. The protease activity was inhibited by Ferric chloride (32%), induced by calcium chloride (156%), no inhibition by magnesium chloride (97%) and slight inhibition by potassium chloride (77%) and manganese chloride (70%). Phenylmethylsulfonyl fluoride (PMSF), a serine protease inhibitor, almost totally inhibited the protease activity, indicating that the protease from red algae was most likely a serine protease. The Km and kcat values were 1.96 µM, and 0.364 s -1 , respectively using BApNA as the substrate. This study revealed that the red algae genome contains numerous genes that encode for proteases from almost all the classes of proteases. A serine protease from the red algae Gelidium pristoides was partially purified and kinetically characterised, confirming that red algae found along the Eastern Coast of South Africa contain genes that express active proteases that may be of medical or industrial interest. Further studies, however, are required to recombinantly express, purify and characterise the numerous proteases encoded by the genes identified in the in silico analysis of this study.
  • Full Text:
  • Date Issued: 2020
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