A mineral systems approach to the development of structural targeting criteria for orogenic gold deposits in the Asankrangwa gold belt of the Kumasi Basin, South-west Ghana
- Authors: Gelber, Benjamin D J
- Date: 2018
- Subjects: Gold ores -- Geology -- Ghana -- Kumasi , Gold mines and mining -- Ghana -- Kumasi , Asankrangwa (Ghana) , Geodynamics -- Ghana -- Kumasi , Prospecting -- Geophysical methods , Orogenic belts -- Ghana -- Kumasi
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63143 , vital:28367
- Description: The Kumasi Basin in South-west Ghana lies at the centre of the best-endowed Paleoproterozoic gold province in the world. The Kumasi Basin and margins of the adjacent volcanic belts are host to six world class gold camps: (1) 62 Moz Obuasi camp, (2) 22 Moz Prestea-Bogoso camp, (3) 11 Moz Asanko Gold Mine camp, (4) 9 Moz Edikan camp, (5) 7 Moz Bibiani camp, (6) 5 Moz Chirano camp, as well as several additional minor gold camps and many more prospects. Cumulatively these camps account for>116 Moz of endowment and contribute to making south-west Ghana the greatest Paleoproterozoic gold province in the world. Gold deposits in the Kumasi Basin are shear zone hosted and mineralisation ranges from disseminated to massive sulphide refractory deposits, to free milling quartz vein style deposits. Structural relationships and age dating indicate that most deposits are genetically related and were formed during a single episode of gold mineralisation during the D4 NNW-SSE crustal shortening deformation event of the Eburnean Orogeny (2125 – 1980 Ma). The understanding of structural controls on mineralisation is critical for exploration success as it allows exploration to focus on areas where these structural controls exist. This study uses a mineral systems approach to understand the relationship between the geodynamic history and structural controls on gold mineralisation in the Kumasi Basin at various scales, and define targeting criteria which can be applied for the purpose of developing predictive exploration models for making new discoveries in the Asanko Gold Mine camp located in the Asankrangwa Belt. The study used a quantitative analysis to establish residual endowment potential in the Asankrangwa Belt, providing the basis for a business model and resulting exploration strategy. Once established, a Fry autocorrelation analysis was applied to identify trends in deposit and camp spatial distribution to which critical geological processes were ascribed. Observed trends were mapped from multi-scale geophysical data sets and through interpretation of existing geophysical structure models, and structural criteria for targeting orogenic gold deposits at the regional and camp scales were developed. Results show that different structural controls on mineralisation act at the regional and camp scale. At the regional scale the distribution of gold camps was found to be controlled by fundamental N-S and NW-SE basement structures with gold camps forming where they intersect NE-SW first and second order structural corridors. At the Asanko Gold Mine camp scale, deposit distribution was found to be related to the intersection between major second order D3 NE-SW shear zones, minor third order D4 NNE-SSW brittle faults, and cryptic NW-SE upward propagating basement structures. In addition to these structural criteria, deposits in the Asanko Gold Mine camp were found to be aligned along a NNE-SSW lineament caused by the interaction between the N-S basement structure and the NE-SW trending Asankrangwa Belt shear corridor.
- Full Text:
- Date Issued: 2018
- Authors: Gelber, Benjamin D J
- Date: 2018
- Subjects: Gold ores -- Geology -- Ghana -- Kumasi , Gold mines and mining -- Ghana -- Kumasi , Asankrangwa (Ghana) , Geodynamics -- Ghana -- Kumasi , Prospecting -- Geophysical methods , Orogenic belts -- Ghana -- Kumasi
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63143 , vital:28367
- Description: The Kumasi Basin in South-west Ghana lies at the centre of the best-endowed Paleoproterozoic gold province in the world. The Kumasi Basin and margins of the adjacent volcanic belts are host to six world class gold camps: (1) 62 Moz Obuasi camp, (2) 22 Moz Prestea-Bogoso camp, (3) 11 Moz Asanko Gold Mine camp, (4) 9 Moz Edikan camp, (5) 7 Moz Bibiani camp, (6) 5 Moz Chirano camp, as well as several additional minor gold camps and many more prospects. Cumulatively these camps account for>116 Moz of endowment and contribute to making south-west Ghana the greatest Paleoproterozoic gold province in the world. Gold deposits in the Kumasi Basin are shear zone hosted and mineralisation ranges from disseminated to massive sulphide refractory deposits, to free milling quartz vein style deposits. Structural relationships and age dating indicate that most deposits are genetically related and were formed during a single episode of gold mineralisation during the D4 NNW-SSE crustal shortening deformation event of the Eburnean Orogeny (2125 – 1980 Ma). The understanding of structural controls on mineralisation is critical for exploration success as it allows exploration to focus on areas where these structural controls exist. This study uses a mineral systems approach to understand the relationship between the geodynamic history and structural controls on gold mineralisation in the Kumasi Basin at various scales, and define targeting criteria which can be applied for the purpose of developing predictive exploration models for making new discoveries in the Asanko Gold Mine camp located in the Asankrangwa Belt. The study used a quantitative analysis to establish residual endowment potential in the Asankrangwa Belt, providing the basis for a business model and resulting exploration strategy. Once established, a Fry autocorrelation analysis was applied to identify trends in deposit and camp spatial distribution to which critical geological processes were ascribed. Observed trends were mapped from multi-scale geophysical data sets and through interpretation of existing geophysical structure models, and structural criteria for targeting orogenic gold deposits at the regional and camp scales were developed. Results show that different structural controls on mineralisation act at the regional and camp scale. At the regional scale the distribution of gold camps was found to be controlled by fundamental N-S and NW-SE basement structures with gold camps forming where they intersect NE-SW first and second order structural corridors. At the Asanko Gold Mine camp scale, deposit distribution was found to be related to the intersection between major second order D3 NE-SW shear zones, minor third order D4 NNE-SSW brittle faults, and cryptic NW-SE upward propagating basement structures. In addition to these structural criteria, deposits in the Asanko Gold Mine camp were found to be aligned along a NNE-SSW lineament caused by the interaction between the N-S basement structure and the NE-SW trending Asankrangwa Belt shear corridor.
- Full Text:
- Date Issued: 2018
A mineralogical, geochemical and metallogenic study of unusual Mn/Na/Ba assemblages at the footwall of conglomeratic iron-ore at farm Langverwacht, Northern Cape Province of South Africa
- Authors: Bursey, James Rodney
- Date: 2018
- Subjects: Iron ores -- Geology -- South Africa -- Northern Cape , Conglomerate -- South Africa -- Northern Cape , Petrology -- South Africa -- Northern Cape , Manganese -- South Africa -- Northern Cape , Sodium -- South Africa -- Northern Cape , Barium -- South Africa -- Northern Cape
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/62516 , vital:28201
- Description: The Postmasburg Manganese Field (PMF), located in the Northern Cape province of South Africa, plays host to significant deposits of iron and manganese that have been utilized since their discovery in 1922 by Captain L.T. Shone. Further afield, lies the massive high-grade manganese deposit of the Kalahari Manganese Field (KMF), which drew attention away from the PMF after its discovery. These deposits are not limited to iron and manganese ore, but contain significant assemblages of alkali-rich rocks - which is the focus of this study. The existence of alkali-rich assemblages beneath conglomeratic iron-ore on farm Langwervacht, has come under investigation in this study, and in particular, the enrichment of these rocks in Ba, Na and Mn. Petrographic analysis of the clast-supported conglomerate unit (ore-zone), has uncovered the presence of vugs (up to 8mm across) which contain barite, K-feldspar and fluorapatite. In addition to this, the ore-zone of one of the three boreholes contains late carbonate veins (kutnohorite), which travel along Fe-clast boundaries, and exploit clast-fractures and areas of weakness. Further down, within the ‘enriched-zone’ of alkalis, the mineralogy is more diverse - containing elevated concentrations of Ba, Na and Mn. Seventeen distinct minerals containing these three key elements have been identified - along with one solid-solution series in the form of hollandite-coronadite. The existence of minerals such as natrolite, aegirine, albite, banalsite, barite, serandite, celsian and hollandite-coronadite are indicative of hydrothermal activity having influenced these rocks. Bulk-geochemistry was used to compare the major and trace elements of each borehole and the associated units. Both the trace elements and the REE’s from the ore-zone are enriched by an average of 5-10x relative to the BIF standard used - which immediately suggests an influx of elements. Compared to PAAS (Post Archaean Australian Shales), the ore-zone REE’s are slightly depleted, but more importantly the profiles are very similar to that of the Mapedi shales achieved in previous studies. This result points towards a strong shale influence in the ore-zone protolith. Expectedly, many of the enriched-zone trace elements and REE’s show far greater enrichment than what is observed in the ore-zone. Trace and Rare Earth Element profiles between the ore-zone and the enriched-zone are, however, generally correlative, with profiles reflecting similar enrichments and depletions for a given element - even within different rock units. This suggests that the hydrothermal fluid has moved in a general upward direction, reacting with host-rock units, and relinquishing elements carried in solution - wherever conditions have been favourable for the accommodation of these elements. This study has shed light on the relationship between the ore-zone and the enriched-zone, and results suggest that the process of alkali enrichment is not directly related to the process of upgrading of the iron ores. This is due to the extent of the alkali-enrichment below the ore-zone, as well as enrichment factors in some trace elements being superior to that of Fe2O3 in the ore- zone. Hence, both of these zones have both been affected by a later hydrothermal fluid. The source of the fluid is likely a mature basinal brine, of oxidized, alkaline nature - which leached elements (Ba, K, Na, Pb, Ca) from older rocks, and carried them in solution. On a local-scale, this fluid has exploited areas of weakness in the form of fractures, less consolidated conglomeratic material and crosscutting veins. Manganese and iron has been remobilized on a local scale - producing secondary textures and partitioning into phases such as Mn-rich calcite and serandite. Comparisons to other studies in the PMF and KMF have revealed very similar alkali-rich assemblages, bearing many of the same minerals observed in this study - even within more manganiferous deposits. These findings have led to suggestions of a possible regional-scale hydrothermal overprint, which may have imparted a similar geochemical signal over the entire region - with the assistance of faults and unconformities. Of course, proving this is no mean feat, but current work on the source of barium in barite, using Sr isotopes from samples across the region may shed light on the source of at least one key element of these deposits.
- Full Text:
- Date Issued: 2018
- Authors: Bursey, James Rodney
- Date: 2018
- Subjects: Iron ores -- Geology -- South Africa -- Northern Cape , Conglomerate -- South Africa -- Northern Cape , Petrology -- South Africa -- Northern Cape , Manganese -- South Africa -- Northern Cape , Sodium -- South Africa -- Northern Cape , Barium -- South Africa -- Northern Cape
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/62516 , vital:28201
- Description: The Postmasburg Manganese Field (PMF), located in the Northern Cape province of South Africa, plays host to significant deposits of iron and manganese that have been utilized since their discovery in 1922 by Captain L.T. Shone. Further afield, lies the massive high-grade manganese deposit of the Kalahari Manganese Field (KMF), which drew attention away from the PMF after its discovery. These deposits are not limited to iron and manganese ore, but contain significant assemblages of alkali-rich rocks - which is the focus of this study. The existence of alkali-rich assemblages beneath conglomeratic iron-ore on farm Langwervacht, has come under investigation in this study, and in particular, the enrichment of these rocks in Ba, Na and Mn. Petrographic analysis of the clast-supported conglomerate unit (ore-zone), has uncovered the presence of vugs (up to 8mm across) which contain barite, K-feldspar and fluorapatite. In addition to this, the ore-zone of one of the three boreholes contains late carbonate veins (kutnohorite), which travel along Fe-clast boundaries, and exploit clast-fractures and areas of weakness. Further down, within the ‘enriched-zone’ of alkalis, the mineralogy is more diverse - containing elevated concentrations of Ba, Na and Mn. Seventeen distinct minerals containing these three key elements have been identified - along with one solid-solution series in the form of hollandite-coronadite. The existence of minerals such as natrolite, aegirine, albite, banalsite, barite, serandite, celsian and hollandite-coronadite are indicative of hydrothermal activity having influenced these rocks. Bulk-geochemistry was used to compare the major and trace elements of each borehole and the associated units. Both the trace elements and the REE’s from the ore-zone are enriched by an average of 5-10x relative to the BIF standard used - which immediately suggests an influx of elements. Compared to PAAS (Post Archaean Australian Shales), the ore-zone REE’s are slightly depleted, but more importantly the profiles are very similar to that of the Mapedi shales achieved in previous studies. This result points towards a strong shale influence in the ore-zone protolith. Expectedly, many of the enriched-zone trace elements and REE’s show far greater enrichment than what is observed in the ore-zone. Trace and Rare Earth Element profiles between the ore-zone and the enriched-zone are, however, generally correlative, with profiles reflecting similar enrichments and depletions for a given element - even within different rock units. This suggests that the hydrothermal fluid has moved in a general upward direction, reacting with host-rock units, and relinquishing elements carried in solution - wherever conditions have been favourable for the accommodation of these elements. This study has shed light on the relationship between the ore-zone and the enriched-zone, and results suggest that the process of alkali enrichment is not directly related to the process of upgrading of the iron ores. This is due to the extent of the alkali-enrichment below the ore-zone, as well as enrichment factors in some trace elements being superior to that of Fe2O3 in the ore- zone. Hence, both of these zones have both been affected by a later hydrothermal fluid. The source of the fluid is likely a mature basinal brine, of oxidized, alkaline nature - which leached elements (Ba, K, Na, Pb, Ca) from older rocks, and carried them in solution. On a local-scale, this fluid has exploited areas of weakness in the form of fractures, less consolidated conglomeratic material and crosscutting veins. Manganese and iron has been remobilized on a local scale - producing secondary textures and partitioning into phases such as Mn-rich calcite and serandite. Comparisons to other studies in the PMF and KMF have revealed very similar alkali-rich assemblages, bearing many of the same minerals observed in this study - even within more manganiferous deposits. These findings have led to suggestions of a possible regional-scale hydrothermal overprint, which may have imparted a similar geochemical signal over the entire region - with the assistance of faults and unconformities. Of course, proving this is no mean feat, but current work on the source of barium in barite, using Sr isotopes from samples across the region may shed light on the source of at least one key element of these deposits.
- Full Text:
- Date Issued: 2018
A narrative study of patients’ illness experiences on antiretroviral treatment
- Authors: Tsope, Lindiwe
- Date: 2018
- Subjects: AIDS (Disease) Social aspects South Africa , HIV infections Social aspects South Africa , Stigma (Social psychology) , Antiretroviral agents , Disclosure of information , Social media in medicine South Africa , Discourse analysis, Narrative
- Language: English
- Type: text , Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/63032 , vital:28356
- Description: Eight female respondents, who have publicly disclosed their HIV-positive status on social media, were involved in a semi-structured in-depth interview process. Using the theoretical frameworks of symbolic interactionism and social constructionism, the study explores the effects of antiretroviral treatment on patients’ illness experiences, looking at the personal and social symbolisms and meanings attached to taking antiretrovirals. The study revealed a positive and inspirational aspect of living with HIV/AIDS and especially consuming antiretroviral therapy. It became evident that the knowledge participants had of antiretrovirals before consuming them was misguided and based more on false ‘general knowledge’ among laypersons than actual medical fact. Moreover, the study revealed that there is a social reconstruction of narratives that has taken place in each participant’s life due to consuming antiretrovirals. Publicly disclosing their statuses has also proved to have both negative and positive consequences for the individuals and for society at large. While there is a consensus that participants’ illness experiences are directly affected by antiretroviral treatment, each participant’s narrative is different, yet positive.
- Full Text:
- Date Issued: 2018
- Authors: Tsope, Lindiwe
- Date: 2018
- Subjects: AIDS (Disease) Social aspects South Africa , HIV infections Social aspects South Africa , Stigma (Social psychology) , Antiretroviral agents , Disclosure of information , Social media in medicine South Africa , Discourse analysis, Narrative
- Language: English
- Type: text , Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/63032 , vital:28356
- Description: Eight female respondents, who have publicly disclosed their HIV-positive status on social media, were involved in a semi-structured in-depth interview process. Using the theoretical frameworks of symbolic interactionism and social constructionism, the study explores the effects of antiretroviral treatment on patients’ illness experiences, looking at the personal and social symbolisms and meanings attached to taking antiretrovirals. The study revealed a positive and inspirational aspect of living with HIV/AIDS and especially consuming antiretroviral therapy. It became evident that the knowledge participants had of antiretrovirals before consuming them was misguided and based more on false ‘general knowledge’ among laypersons than actual medical fact. Moreover, the study revealed that there is a social reconstruction of narratives that has taken place in each participant’s life due to consuming antiretrovirals. Publicly disclosing their statuses has also proved to have both negative and positive consequences for the individuals and for society at large. While there is a consensus that participants’ illness experiences are directly affected by antiretroviral treatment, each participant’s narrative is different, yet positive.
- Full Text:
- Date Issued: 2018
A psychobiographical study of Temple Grandin
- Authors: Wannenburg, Nicola
- Date: 2018
- Subjects: Grandin, Temple , Psychology Biographical methods , Psychoanalysis , Autistic women United States Biography , Women animal specialists United States Biography , Developmental psychology , Erikson, Erik H (Erik Homburger), 1902-1994
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/57358 , vital:26877
- Description: Psychobiographical researchers methodically formulate life histories and interpret them by means of psychological theories. The research typically focuses on exemplary and completed lives. The cases that are studied are usually of individuals who are of particular interest to society as a result of excelling in their particular fields, be they to benefit or detriment of society. Temple Grandin was chosen for this study using purposive sampling as she meets the psychobiographical requirement of being an extraordinary individual. As an individual with autism Grandin faced many challenges growing up. Despite a difficult and absent beginning, Grandin developed into a stable and scientifically creative adult who contributes to society. She excels as an animal scientist and designer of humane livestock handling facilities and has an international reputation for her contribution to the livestock industry and animal welfare. The primary aim of this study is to describe and interpret the life of Temple Grandin through Erikson’s (1950/1973) theory of psychosocial development. A mixed method approach (Yin, 2006) was employed for the conduction of this study. The overarching data processing and analysis guidelines for this study were provided by Miles and Huberman (1994, 2002a, 2002b). The conduction of the processing and analysis of data was aided by Alexander’s (1988, 1990) method of asking the data questions as well as an integration of Yin’s (2014) time series analysis with Erikson’s (1950/1973) triple bookkeeping approach. This study contributes to the development of psychobiographical research in South Africa as well as to personality and developmental theory.
- Full Text:
- Date Issued: 2018
- Authors: Wannenburg, Nicola
- Date: 2018
- Subjects: Grandin, Temple , Psychology Biographical methods , Psychoanalysis , Autistic women United States Biography , Women animal specialists United States Biography , Developmental psychology , Erikson, Erik H (Erik Homburger), 1902-1994
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/57358 , vital:26877
- Description: Psychobiographical researchers methodically formulate life histories and interpret them by means of psychological theories. The research typically focuses on exemplary and completed lives. The cases that are studied are usually of individuals who are of particular interest to society as a result of excelling in their particular fields, be they to benefit or detriment of society. Temple Grandin was chosen for this study using purposive sampling as she meets the psychobiographical requirement of being an extraordinary individual. As an individual with autism Grandin faced many challenges growing up. Despite a difficult and absent beginning, Grandin developed into a stable and scientifically creative adult who contributes to society. She excels as an animal scientist and designer of humane livestock handling facilities and has an international reputation for her contribution to the livestock industry and animal welfare. The primary aim of this study is to describe and interpret the life of Temple Grandin through Erikson’s (1950/1973) theory of psychosocial development. A mixed method approach (Yin, 2006) was employed for the conduction of this study. The overarching data processing and analysis guidelines for this study were provided by Miles and Huberman (1994, 2002a, 2002b). The conduction of the processing and analysis of data was aided by Alexander’s (1988, 1990) method of asking the data questions as well as an integration of Yin’s (2014) time series analysis with Erikson’s (1950/1973) triple bookkeeping approach. This study contributes to the development of psychobiographical research in South Africa as well as to personality and developmental theory.
- Full Text:
- Date Issued: 2018
A psychosocial reading of novice clinical psychologists’ talk about whiteness
- Authors: Kennedy, Brink
- Date: 2018
- Subjects: Clinical psychology Practice South Africa , White people Race identity South Africa , White privilege (Social structure) South Africa , White people Race identity Psychological aspects , Intercultural communication , Psychoanalysis and racism South Africa , Mentalization Based Therapy
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/60212 , vital:27751
- Description: This research presents a case study report of interview encounters with two novice white South African clinical psychologists. A psychosocial research methodology is employed to examine the discursive strategies that participants engage in when speaking about whiteness in the context of their professional identity and practice, as well as to examine the ways in which these discursive strategies support or constrain ‘mentalizing’ in relation to raced experience. One case study highlights an individualistic discourse of ‘racial innocence’, which constructs the speaker as being free of racial enculturation and consciousness, eliding a broader social context. I argue that this discourse closes down mentalizing in relation to more difficult, intractable aspects of raced experience in clinical work, relating to differences in positionality as well as issues of inequality. I also propose that this discourse may be understood in terms of a ‘pretend’ mode of thought, where aspects of the wider social context and of race in particular are experienced as being unrelated to intimate personal experience. The other case study highlights a discourse of ‘uneasy whiteness’ that involves awareness of white positionality, and that is grounded in a constructionist sensibility. This positions the speaker as being inevitably implicated in white privilege and racism in ways that she may be ignorant of. I argue that the discourse facilitates a particular type of mentalizing that is sensitive to the interpellation of intimate personal experience with a wider social context that encompasses a range of discourses and practices. It closes down mentalizing, however, in so far as it allows a reified construction of whiteness. I find the concept of psychic equivalence, which equates external (concrete, factual) reality and internal (subjective, symbolic) reality, useful in terms of understanding this reification. Overall the research highlights the tension between constructionist and individualistic modes of thinking within clinical psychology research and practice in the South African context. At the level of methodology, it presents an example of how these modes may be integrated within research. At the level of content, it explores differences between constructionist and individualistic talk in relation to race and psychological practice.
- Full Text:
- Date Issued: 2018
- Authors: Kennedy, Brink
- Date: 2018
- Subjects: Clinical psychology Practice South Africa , White people Race identity South Africa , White privilege (Social structure) South Africa , White people Race identity Psychological aspects , Intercultural communication , Psychoanalysis and racism South Africa , Mentalization Based Therapy
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/60212 , vital:27751
- Description: This research presents a case study report of interview encounters with two novice white South African clinical psychologists. A psychosocial research methodology is employed to examine the discursive strategies that participants engage in when speaking about whiteness in the context of their professional identity and practice, as well as to examine the ways in which these discursive strategies support or constrain ‘mentalizing’ in relation to raced experience. One case study highlights an individualistic discourse of ‘racial innocence’, which constructs the speaker as being free of racial enculturation and consciousness, eliding a broader social context. I argue that this discourse closes down mentalizing in relation to more difficult, intractable aspects of raced experience in clinical work, relating to differences in positionality as well as issues of inequality. I also propose that this discourse may be understood in terms of a ‘pretend’ mode of thought, where aspects of the wider social context and of race in particular are experienced as being unrelated to intimate personal experience. The other case study highlights a discourse of ‘uneasy whiteness’ that involves awareness of white positionality, and that is grounded in a constructionist sensibility. This positions the speaker as being inevitably implicated in white privilege and racism in ways that she may be ignorant of. I argue that the discourse facilitates a particular type of mentalizing that is sensitive to the interpellation of intimate personal experience with a wider social context that encompasses a range of discourses and practices. It closes down mentalizing, however, in so far as it allows a reified construction of whiteness. I find the concept of psychic equivalence, which equates external (concrete, factual) reality and internal (subjective, symbolic) reality, useful in terms of understanding this reification. Overall the research highlights the tension between constructionist and individualistic modes of thinking within clinical psychology research and practice in the South African context. At the level of methodology, it presents an example of how these modes may be integrated within research. At the level of content, it explores differences between constructionist and individualistic talk in relation to race and psychological practice.
- Full Text:
- Date Issued: 2018
A reconciliation study of different resource estimation methods and drill hole spacing as applied to the Langer Heinrich calcrete-hosted uranium deposit, Namibia
- Authors: Baufeldt, Sven
- Date: 2018
- Subjects: Uranium -- Namibia , Calcretes -- Namibia , Carnotite -- Namibia , Uranium mines and mining -- Namibia , Uranium ores -- Geology -- Namibia , Langer-Heinrich Uranium mine
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/62527 , vital:28203
- Description: The Langer Heinrich calcrete hosted uranium deposit is situated approximately 90 km to east of the coastal town of Swakopmund in Namibia. It is run by an Australian owned company, Paladin Energy Limited, along with China National Nuclear Corporation (CNNC) who maintain 25% of the shares. Production commenced in 2007 and has been ongoing. Carnotite is the primary and only ore mineral, and the nature of mineralisation within the Langer Heinrich palaeo channel dictates westward-directed continuous open pit mining. Smaller-scale 1micro pits target near-surface, high-grade, lenses toward the east. The high variability in uranium grade over relatively short distances complicates the grade estimation process. This combined with a low uranium price, and a study aimed at optimising of mine production is one of the key drivers for the research presented in this thesis. The efficacy of four resource estimation techniques, commonly used in the mining industry, are investigated by application to variable exploration, infill drilling and grade-control drill pattern spacing. The drill spacing includes regular grids of 50 m x 50 m, 25 m x 25 m and 12,5 m x 12,5 m exploration data. Also included is grade control drill data, drilled on a 4 m x 4 m spacing. The current selective mining unit (SMU) is 4mE x 4mN x 3mRl which is an indication of the minimum dimension whereby the loading equipment can separate ore from waste. The two datasets are processed by four estimation techniques: Inverse Distance Weighting (IDW, squared and cubed), Ordinary Kriging (OK), Multiple Indicator Kriging (MIK) and Conditional Simulation (CS). The two datasets consisted of real-time mining data from pit G1 (micro-pit) in the eastern parts of the mining licence, and pit H1 (continuous larger open pit) in the western area of the palaeo channel. The reconciliation project aims to provide results suitable for devising optimised mining strategies, particularly in future targets where drill spacing can perhaps be improved to provide suitable data with a greater cost saving strategy. Along with the optimal drill spacing or combination thereof, a preferred estimation technique can be suggested and recommended for future operations that involve mining of surficial calcrete-hosted uranium deposits. Results of this study show that 12,5 m x 12,5 m drill spacing provided estimation accuracies similar to that of the narrow 4 m x 4 m grade control spacing (blast hole drilling spacing). The 12,5 m x 12,5m spacing has potential for accurate grade estimations during mining, and could be supplemented by infill downhole radiometric logging on a 4 m x 4 m spacing when 1 Micro pit: Small pits within palaeo channel usually targeted for their near surface high-grade ore necessary. In general, Multiple Indicator Kriging (MIK) provided the most accurate and robust estimations on the wider spaced exploration data and conditional simulation (CS) proved more efficient on the narrow grade control data. These results correspond with current exploration practices for surficial uranium deposits world-wide. Deposit type, therefore complexity and hence SMU sizes play a pivotal role in drill hole planning and estimation accuracies.
- Full Text:
- Date Issued: 2018
- Authors: Baufeldt, Sven
- Date: 2018
- Subjects: Uranium -- Namibia , Calcretes -- Namibia , Carnotite -- Namibia , Uranium mines and mining -- Namibia , Uranium ores -- Geology -- Namibia , Langer-Heinrich Uranium mine
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/62527 , vital:28203
- Description: The Langer Heinrich calcrete hosted uranium deposit is situated approximately 90 km to east of the coastal town of Swakopmund in Namibia. It is run by an Australian owned company, Paladin Energy Limited, along with China National Nuclear Corporation (CNNC) who maintain 25% of the shares. Production commenced in 2007 and has been ongoing. Carnotite is the primary and only ore mineral, and the nature of mineralisation within the Langer Heinrich palaeo channel dictates westward-directed continuous open pit mining. Smaller-scale 1micro pits target near-surface, high-grade, lenses toward the east. The high variability in uranium grade over relatively short distances complicates the grade estimation process. This combined with a low uranium price, and a study aimed at optimising of mine production is one of the key drivers for the research presented in this thesis. The efficacy of four resource estimation techniques, commonly used in the mining industry, are investigated by application to variable exploration, infill drilling and grade-control drill pattern spacing. The drill spacing includes regular grids of 50 m x 50 m, 25 m x 25 m and 12,5 m x 12,5 m exploration data. Also included is grade control drill data, drilled on a 4 m x 4 m spacing. The current selective mining unit (SMU) is 4mE x 4mN x 3mRl which is an indication of the minimum dimension whereby the loading equipment can separate ore from waste. The two datasets are processed by four estimation techniques: Inverse Distance Weighting (IDW, squared and cubed), Ordinary Kriging (OK), Multiple Indicator Kriging (MIK) and Conditional Simulation (CS). The two datasets consisted of real-time mining data from pit G1 (micro-pit) in the eastern parts of the mining licence, and pit H1 (continuous larger open pit) in the western area of the palaeo channel. The reconciliation project aims to provide results suitable for devising optimised mining strategies, particularly in future targets where drill spacing can perhaps be improved to provide suitable data with a greater cost saving strategy. Along with the optimal drill spacing or combination thereof, a preferred estimation technique can be suggested and recommended for future operations that involve mining of surficial calcrete-hosted uranium deposits. Results of this study show that 12,5 m x 12,5 m drill spacing provided estimation accuracies similar to that of the narrow 4 m x 4 m grade control spacing (blast hole drilling spacing). The 12,5 m x 12,5m spacing has potential for accurate grade estimations during mining, and could be supplemented by infill downhole radiometric logging on a 4 m x 4 m spacing when 1 Micro pit: Small pits within palaeo channel usually targeted for their near surface high-grade ore necessary. In general, Multiple Indicator Kriging (MIK) provided the most accurate and robust estimations on the wider spaced exploration data and conditional simulation (CS) proved more efficient on the narrow grade control data. These results correspond with current exploration practices for surficial uranium deposits world-wide. Deposit type, therefore complexity and hence SMU sizes play a pivotal role in drill hole planning and estimation accuracies.
- Full Text:
- Date Issued: 2018
A review of Climate-Smart system innovations in two Agricultural Colleges in the North West Province of South Africa
- Authors: Van Staden, Wilma
- Date: 2018
- Subjects: Crops and climate South Africa North-West , Sustainable agriculture South Africa North-West , Agriculture Environmental aspects South Africa North-West , Agricultural colleges Curricula South Africa , Agricultural innovations , Agricultural ecology South Africa North-West
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/63426 , vital:28410
- Description: This study was centred on the Agricultural Innovation System in the North West Province, South Africa as a response to climate change. The study developed during a time when Climate-Smart Agriculture emerged in policy and was developed as a strategic agricultural innovation process in response to changes in climate that increased food insecurity. The Agricultural Colleges embedded in the agricultural system realised that they were teaching students without a clear provision for climate change and therefore needed to initiate climate responsive innovations to comply with the Climate-Smart strategy that had been proposed by the provincial authorities. This provided the context for the study to track and support the innovation process of transitioning towards Climate-Smart responsive curriculum and learning practices within the system. A theoretical framework for the study was developed using a Cultural Historical Activity Theory perspective. This allowed the researcher to approach the research process as two case studies of innovation within the Agricultural Innovation System of the North West Province. The study developed as an iterative process of innovation support and tracking. At the early stages of the research process, data were generated through document analysis and a survey completed by the research participants at the preliminary consultative workshop. The contextual data allowed the researcher to begin to develop a clear contextual profile for both case studies. The consultative workshops were held to orientate the research around the central problems and challenges related to curriculum alignment with provincial Climate-Smart Agricultural policies. The methodology thereafter was developed as an iterative process of successive intervention-innovation workshops where the participating staff in each college reviewed their curriculum with the support of a Climate-Smart Innovation Tool. This tool was developed as a mediating resource for participants to undertake intervention work towards curriculum innovation in their context. The historical analysis from the two consultative workshops and the data derived from the initial use of the Climate-Smart Innovation Tool was used to model the activity systems in the respective colleges and the provincial system. This analysis enabled the researcher to scope how the system was currently functioning and how it had changed over time. During the workshops, curriculum innovations were reviewed and a fuller picture of the challenges of system innovation emerged, especially from a curriculum innovation vantage point. This system analysis was used to analyse emergent tensions and contradictions within the system and to build a picture of the complexities of participating staff initiating innovations towards Climate-Smart responsiveness in the colleges and within the Agricultural Innovation System. During the review and tracking of the supported innovation process the Climate-Smart Innovation Tool was developed into online sub-tools where either Departments or individual lecturers could review and track their own Climate-Smart responsiveness. The tool was shown to be a useful tool for surfacing contradictions, and identifying absences, and thus for charting out the start of reflexive learning and change processes needed for introducing climate responsive knowledge into the system. The study reveals that catalysing of curriculum and learning system innovation aligned with wider innovations in the agricultural innovation system requires specific tools, time and the understanding of the importance of micro-level innovation. The innovations within the system revealed the significance of allowing for time and processes that facilitate ‘ascending’ from the abstract concept of Climate-Smart Agriculture into more concrete curriculum processes. The curriculum review tool developed for this study served as an important double stimulation tool, along with activity system mapping, and ongoing refinement and clarification of the object of Climate-Smart Agriculture and associated contradictions and action plans for climate smart responsiveness in the college context. The tools and processes that were developed during this study, assisting in the emergence of micro-level innovation of the curriculum and learning system. The barriers and processes hampering curriculum and learning innovation within the system were identified. The study concludes with the recommendations on how a Climate-Smart innovation process might best be supported with reflexive tools within a curriculum and learning system during a time of institutional flux.
- Full Text:
- Date Issued: 2018
- Authors: Van Staden, Wilma
- Date: 2018
- Subjects: Crops and climate South Africa North-West , Sustainable agriculture South Africa North-West , Agriculture Environmental aspects South Africa North-West , Agricultural colleges Curricula South Africa , Agricultural innovations , Agricultural ecology South Africa North-West
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/63426 , vital:28410
- Description: This study was centred on the Agricultural Innovation System in the North West Province, South Africa as a response to climate change. The study developed during a time when Climate-Smart Agriculture emerged in policy and was developed as a strategic agricultural innovation process in response to changes in climate that increased food insecurity. The Agricultural Colleges embedded in the agricultural system realised that they were teaching students without a clear provision for climate change and therefore needed to initiate climate responsive innovations to comply with the Climate-Smart strategy that had been proposed by the provincial authorities. This provided the context for the study to track and support the innovation process of transitioning towards Climate-Smart responsive curriculum and learning practices within the system. A theoretical framework for the study was developed using a Cultural Historical Activity Theory perspective. This allowed the researcher to approach the research process as two case studies of innovation within the Agricultural Innovation System of the North West Province. The study developed as an iterative process of innovation support and tracking. At the early stages of the research process, data were generated through document analysis and a survey completed by the research participants at the preliminary consultative workshop. The contextual data allowed the researcher to begin to develop a clear contextual profile for both case studies. The consultative workshops were held to orientate the research around the central problems and challenges related to curriculum alignment with provincial Climate-Smart Agricultural policies. The methodology thereafter was developed as an iterative process of successive intervention-innovation workshops where the participating staff in each college reviewed their curriculum with the support of a Climate-Smart Innovation Tool. This tool was developed as a mediating resource for participants to undertake intervention work towards curriculum innovation in their context. The historical analysis from the two consultative workshops and the data derived from the initial use of the Climate-Smart Innovation Tool was used to model the activity systems in the respective colleges and the provincial system. This analysis enabled the researcher to scope how the system was currently functioning and how it had changed over time. During the workshops, curriculum innovations were reviewed and a fuller picture of the challenges of system innovation emerged, especially from a curriculum innovation vantage point. This system analysis was used to analyse emergent tensions and contradictions within the system and to build a picture of the complexities of participating staff initiating innovations towards Climate-Smart responsiveness in the colleges and within the Agricultural Innovation System. During the review and tracking of the supported innovation process the Climate-Smart Innovation Tool was developed into online sub-tools where either Departments or individual lecturers could review and track their own Climate-Smart responsiveness. The tool was shown to be a useful tool for surfacing contradictions, and identifying absences, and thus for charting out the start of reflexive learning and change processes needed for introducing climate responsive knowledge into the system. The study reveals that catalysing of curriculum and learning system innovation aligned with wider innovations in the agricultural innovation system requires specific tools, time and the understanding of the importance of micro-level innovation. The innovations within the system revealed the significance of allowing for time and processes that facilitate ‘ascending’ from the abstract concept of Climate-Smart Agriculture into more concrete curriculum processes. The curriculum review tool developed for this study served as an important double stimulation tool, along with activity system mapping, and ongoing refinement and clarification of the object of Climate-Smart Agriculture and associated contradictions and action plans for climate smart responsiveness in the college context. The tools and processes that were developed during this study, assisting in the emergence of micro-level innovation of the curriculum and learning system. The barriers and processes hampering curriculum and learning innovation within the system were identified. The study concludes with the recommendations on how a Climate-Smart innovation process might best be supported with reflexive tools within a curriculum and learning system during a time of institutional flux.
- Full Text:
- Date Issued: 2018
A review of the implementation of the CAPS Life Skills curriculum training, as a recontextualising process, in engaging teachers in environmental education in two districts of the Eastern Cape Province
- Authors: Yoyo, Sindiswa
- Date: 2018
- Subjects: Life skills Study and teaching (Continuing education) South Africa Eastern Cape , Environmental education Curricula South Africa Eastern Cape , Teachers In-service training South Africa Eastern Cape , Curriculum change South Africa Eastern Cape , Teachers Education (Continuing education) South Africa Eastern Cape
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61767 , vital:28057
- Description: This study examines how the implementation of CAPS Life Skills curriculum training (as a recontextualising process) is engaging teachers in environmental education. The research was centred on training manuals for Life Skills (Official Recontextualisation Field) and their use in CAPS training at district level in two Eastern Cape sites of recontextualisation (Professional Recontextualisation Field). During the training, teachers developed lesson plans that were reviewed and group interviews were conducted on the training process and its outcomes. The manuals, training process, lesson plans and interview transcripts were analysed for evidence of environmental education, notably content, teaching and learning methods and assessment strategies. Bernstein’s (1990) framework of the pedagogic device underpins this study. Here the concept of the relay is key for tracking the "relay” of the content, teaching and learning methods and assessment strategies through the processes of recontextualisation into the lesson plans for the field of production. During the process of de-location and relocation, gaps are created and this study sought to track and probe patterns of omissions that took place during the relay process in two cases of training. The review of the in-service training course process of recontextualisation and its cascading approach exposed challenges of omission as it became clear that at each level of the recontextualisation process, gaps were apparent. The study highlighted how the 3-5 day workshop process reviewed was not a robust model for professional development. It was not effective and changes in the mode of delivery and processes of support that reach into curriculum practice in the context of the school are recommended. The study concludes that there is a need for continuous professional development as teachers need ongoing support especially for a "new” curriculum like CAPS that is content driven.
- Full Text:
- Date Issued: 2018
- Authors: Yoyo, Sindiswa
- Date: 2018
- Subjects: Life skills Study and teaching (Continuing education) South Africa Eastern Cape , Environmental education Curricula South Africa Eastern Cape , Teachers In-service training South Africa Eastern Cape , Curriculum change South Africa Eastern Cape , Teachers Education (Continuing education) South Africa Eastern Cape
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61767 , vital:28057
- Description: This study examines how the implementation of CAPS Life Skills curriculum training (as a recontextualising process) is engaging teachers in environmental education. The research was centred on training manuals for Life Skills (Official Recontextualisation Field) and their use in CAPS training at district level in two Eastern Cape sites of recontextualisation (Professional Recontextualisation Field). During the training, teachers developed lesson plans that were reviewed and group interviews were conducted on the training process and its outcomes. The manuals, training process, lesson plans and interview transcripts were analysed for evidence of environmental education, notably content, teaching and learning methods and assessment strategies. Bernstein’s (1990) framework of the pedagogic device underpins this study. Here the concept of the relay is key for tracking the "relay” of the content, teaching and learning methods and assessment strategies through the processes of recontextualisation into the lesson plans for the field of production. During the process of de-location and relocation, gaps are created and this study sought to track and probe patterns of omissions that took place during the relay process in two cases of training. The review of the in-service training course process of recontextualisation and its cascading approach exposed challenges of omission as it became clear that at each level of the recontextualisation process, gaps were apparent. The study highlighted how the 3-5 day workshop process reviewed was not a robust model for professional development. It was not effective and changes in the mode of delivery and processes of support that reach into curriculum practice in the context of the school are recommended. The study concludes that there is a need for continuous professional development as teachers need ongoing support especially for a "new” curriculum like CAPS that is content driven.
- Full Text:
- Date Issued: 2018
A review of the re-structuring of the Nelson Mandela Academic Hospital through the change management approach
- Authors: Nodikida, Mzulungile
- Date: 2018
- Subjects: Organizational change -- Case studies , Organizational change -- Management , Reengineering (Management) -- South Africa -- Mthatha , Leadership -- South Africa -- Mthatha , Organizational behavior -- South Africa -- Mthatha , Corporate culture -- South Africa -- Mthatha , Nelson Mandela Academic Hospital
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/58339 , vital:27236
- Description: The research used a change management approach to analyze the restructuring of the Nelson Mandela Academic Hospital from a tertiary to a central hospital. The study was underpinned by two objectives. Firstly, to analyze the restructuring of the Nelson Mandela Academic Hospital from a tertiary to a "central" hospital using the Core Elements Framework of change management developed by Antwi and Kale (2014). Secondly, to use the knowledge gained through literature review combined with the experiences of the managers at Nelson Mandela Academic Hospital to inform future healthcare reforms in general and particularly in the restructuring of hospitals. The Core Elements Framework by Antwi and Kale (2014) identifies six fundamental change elements from both emergent and planned change management approaches. The six elements are regarded by theorists from the two different schools of thought i.e. emergent change and planned change as key for successful change. The Core Elements Framework by Antwi and Kale, (2014) demonstrates the strength of not viewing the two approaches to change management as mutually exclusive but as complementing each other when the other is falling short. The study identified the following: ■ The change was prompted by clearly identifiable external factors more than internal factors. ■ There was notable lack of organizational harmony which may have negatively impacted the change process. ■ The Private Public Partnership (PPP) funding model which was aimed at delivering the central hospital collapsed, after a study discovered that it benefited the private sector more than the public sector. ■ There was no proper consultation of major stakeholders for preparation of the change. ■ Resources in all material forms were not made available for the change to take off, this means that there was no organizational capacity to execute the change. The study draws the conclusion that lack of organizational capacity, organizational harmony and a proper consultation process for stakeholders are the main reasons why the restructuring of the Nelson Mandela Academic Hospital is not yielding the desired results. The study recommends that organizations should implement a multidimensional approach for any change initiative to be successful and that organizations must ensure the availability of the necessary resources when embarking on change.
- Full Text:
- Date Issued: 2018
- Authors: Nodikida, Mzulungile
- Date: 2018
- Subjects: Organizational change -- Case studies , Organizational change -- Management , Reengineering (Management) -- South Africa -- Mthatha , Leadership -- South Africa -- Mthatha , Organizational behavior -- South Africa -- Mthatha , Corporate culture -- South Africa -- Mthatha , Nelson Mandela Academic Hospital
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/58339 , vital:27236
- Description: The research used a change management approach to analyze the restructuring of the Nelson Mandela Academic Hospital from a tertiary to a central hospital. The study was underpinned by two objectives. Firstly, to analyze the restructuring of the Nelson Mandela Academic Hospital from a tertiary to a "central" hospital using the Core Elements Framework of change management developed by Antwi and Kale (2014). Secondly, to use the knowledge gained through literature review combined with the experiences of the managers at Nelson Mandela Academic Hospital to inform future healthcare reforms in general and particularly in the restructuring of hospitals. The Core Elements Framework by Antwi and Kale (2014) identifies six fundamental change elements from both emergent and planned change management approaches. The six elements are regarded by theorists from the two different schools of thought i.e. emergent change and planned change as key for successful change. The Core Elements Framework by Antwi and Kale, (2014) demonstrates the strength of not viewing the two approaches to change management as mutually exclusive but as complementing each other when the other is falling short. The study identified the following: ■ The change was prompted by clearly identifiable external factors more than internal factors. ■ There was notable lack of organizational harmony which may have negatively impacted the change process. ■ The Private Public Partnership (PPP) funding model which was aimed at delivering the central hospital collapsed, after a study discovered that it benefited the private sector more than the public sector. ■ There was no proper consultation of major stakeholders for preparation of the change. ■ Resources in all material forms were not made available for the change to take off, this means that there was no organizational capacity to execute the change. The study draws the conclusion that lack of organizational capacity, organizational harmony and a proper consultation process for stakeholders are the main reasons why the restructuring of the Nelson Mandela Academic Hospital is not yielding the desired results. The study recommends that organizations should implement a multidimensional approach for any change initiative to be successful and that organizations must ensure the availability of the necessary resources when embarking on change.
- Full Text:
- Date Issued: 2018
A social realist study of employability development in engineering education
- Authors: Nudelman, Gabrielle Reeve
- Date: 2018
- Subjects: Critical realism , Electrical engineering -- Study and teaching (Higher) -- South Africa -- Cape Town , Employability , Career education -- South Africa -- Cape Town , School-to-work transition -- South Africa -- Cape Town
- Language: English
- Type: thesis , text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62884 , vital:28307
- Description: This qualitative case study of a course pairing offered to final-year electrical engineering students at the University of Cape Town in 2015 was undertaken in order to better understand the ways in which participation in undergraduate courses can prepare engineering students for the workplace. The course pairing consisted of New Venture Planning and Professional Communication Studies. While the former aimed to expose students to the knowledge relating to starting a new business, the latter focused on teaching students how to create written and oral texts to support such an endeavour. Using Roy Bhaskar’s critical realism as a theoretical underlabourer, the study develops understandings regarding the generative mechanisms at work during the two courses. In support of this, the study posits an understanding of employability that moves beyond the acquisition of discrete workplace skills. Rather, employability is conceptualised as discursive transformation, with students being deemed “work-ready” when they develop discursive identities as engineers. Data generation took place by means of focus group and individual interviews, ethnographic observation and documentary research. Margaret Archer’s social realist tools – in particular, analytical dualism and the morphogenetic framework were used to trace the students’ transformations over the course pairing. It was argued that those students who developed discursive identities of engineers were those who, in Archer’s terms, emerged as social actors at the end of the course pairing. Two characteristics of the courses were found to enable this transformation: those parts that promoted deepened understanding of what the role of “engineer” entailed and the parts that provided spaces for students to develop their own personal identities. The findings of the study indicated that discursive identities as engineers were more likely to be developed through the group work and spaces for reflection engendered by the courses than as a result of the formal curriculum. The implications of the research are that, while a focus on employability in engineering education is valid and productive, this needs to be supported by opportunities for authentic learning experiences which afford students the opportunity to engage in learning that promotes real-life application of knowledge. , Thesis (PhD)--Rhodes University, Faculty of Education, Education, 2018
- Full Text:
- Date Issued: 2018
- Authors: Nudelman, Gabrielle Reeve
- Date: 2018
- Subjects: Critical realism , Electrical engineering -- Study and teaching (Higher) -- South Africa -- Cape Town , Employability , Career education -- South Africa -- Cape Town , School-to-work transition -- South Africa -- Cape Town
- Language: English
- Type: thesis , text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/62884 , vital:28307
- Description: This qualitative case study of a course pairing offered to final-year electrical engineering students at the University of Cape Town in 2015 was undertaken in order to better understand the ways in which participation in undergraduate courses can prepare engineering students for the workplace. The course pairing consisted of New Venture Planning and Professional Communication Studies. While the former aimed to expose students to the knowledge relating to starting a new business, the latter focused on teaching students how to create written and oral texts to support such an endeavour. Using Roy Bhaskar’s critical realism as a theoretical underlabourer, the study develops understandings regarding the generative mechanisms at work during the two courses. In support of this, the study posits an understanding of employability that moves beyond the acquisition of discrete workplace skills. Rather, employability is conceptualised as discursive transformation, with students being deemed “work-ready” when they develop discursive identities as engineers. Data generation took place by means of focus group and individual interviews, ethnographic observation and documentary research. Margaret Archer’s social realist tools – in particular, analytical dualism and the morphogenetic framework were used to trace the students’ transformations over the course pairing. It was argued that those students who developed discursive identities of engineers were those who, in Archer’s terms, emerged as social actors at the end of the course pairing. Two characteristics of the courses were found to enable this transformation: those parts that promoted deepened understanding of what the role of “engineer” entailed and the parts that provided spaces for students to develop their own personal identities. The findings of the study indicated that discursive identities as engineers were more likely to be developed through the group work and spaces for reflection engendered by the courses than as a result of the formal curriculum. The implications of the research are that, while a focus on employability in engineering education is valid and productive, this needs to be supported by opportunities for authentic learning experiences which afford students the opportunity to engage in learning that promotes real-life application of knowledge. , Thesis (PhD)--Rhodes University, Faculty of Education, Education, 2018
- Full Text:
- Date Issued: 2018
A spatio-temporal, landscape perspective on acacia dealbata invasions and broader land-use and cover changes in the Northern Eastern Cape, South Africa
- Authors: Gouws, Aidan John
- Date: 2018
- Subjects: Acacia -- South Africa -- Eastern Cape , Biological invasions -- South Africa -- Eastern Cape , Plant invasions -- South Africa -- Eastern Cape , Acacia -- Biological control -- South Africa -- Eastern Cape , Eastern Cape (South Africa) -- Rural conditions
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/62373 , vital:28161
- Description: Biological invasions are a wicked, social-ecological problem, interacting with numerous components within and across a range of spatio-temporal scales, with the potential to disturb broader socio-economic and ecological systems. Acacia dealbata is an invasive shrub in South Africa, widely naturalised across the grassland biome. Although the deployment of a biocontrol agent on A. dealbata is apparently justified considering its highly invasive and ecologically destructive nature, it should proceed with caution due to the integration of the species into the livelihoods of rural communities. This study sought to understand the nature and extent of the A. dealbata invasion in the northern Eastern Cape. Research was conducted in nine villages in rural Matatiele, Mount Fletcher and Maclear, selected for the pervasiveness of A. dealbata around these villages. A time-series of aerial photographs were systematically classified according to designated A. dealbata and land-use/land cover (LULC) categories in ArcGIS to track changes in the extent and rate of spread of A. dealbata, while standard vegetation surveying techniques were used to determine the current abundance and productivity of A. dealbata in selected areas. A high degree of spatial variability characterised the extent, density and biomass of A. dealbata, as well as the annual rate of spread and biomass production. The growth, productivity and spread of A. dealbata were significantly positive, and relatively few biophysical conditions correlated with the invasion. This was indicative of the broad range of invaded and potentially invasible habitats, suggesting that the extent and abundance of A. dealbata will likely continue to increase, barring deliberate intervention. Broader changes in LULC were also apparent, multidirectional and spatio- temporally variable. Despite a net increase in A. dealbata, the invasion was found to be highly dynamic, with various LULC transitioning to A. dealbata, but in turn A. dealbata transitioning to other LULC. Indeed, biological invasions are dynamic, context-specific phenomena, shaped by the heterogeneity of landscapes. Management interventions to limit or control A. dealbata should therefore consider the spatio-temporal dynamics of invaded landscapes, as well as the local-scale abundance, productivity and biophysical conditions of the area, while taking into consideration the livelihood requirements of the local communities.
- Full Text:
- Date Issued: 2018
- Authors: Gouws, Aidan John
- Date: 2018
- Subjects: Acacia -- South Africa -- Eastern Cape , Biological invasions -- South Africa -- Eastern Cape , Plant invasions -- South Africa -- Eastern Cape , Acacia -- Biological control -- South Africa -- Eastern Cape , Eastern Cape (South Africa) -- Rural conditions
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/62373 , vital:28161
- Description: Biological invasions are a wicked, social-ecological problem, interacting with numerous components within and across a range of spatio-temporal scales, with the potential to disturb broader socio-economic and ecological systems. Acacia dealbata is an invasive shrub in South Africa, widely naturalised across the grassland biome. Although the deployment of a biocontrol agent on A. dealbata is apparently justified considering its highly invasive and ecologically destructive nature, it should proceed with caution due to the integration of the species into the livelihoods of rural communities. This study sought to understand the nature and extent of the A. dealbata invasion in the northern Eastern Cape. Research was conducted in nine villages in rural Matatiele, Mount Fletcher and Maclear, selected for the pervasiveness of A. dealbata around these villages. A time-series of aerial photographs were systematically classified according to designated A. dealbata and land-use/land cover (LULC) categories in ArcGIS to track changes in the extent and rate of spread of A. dealbata, while standard vegetation surveying techniques were used to determine the current abundance and productivity of A. dealbata in selected areas. A high degree of spatial variability characterised the extent, density and biomass of A. dealbata, as well as the annual rate of spread and biomass production. The growth, productivity and spread of A. dealbata were significantly positive, and relatively few biophysical conditions correlated with the invasion. This was indicative of the broad range of invaded and potentially invasible habitats, suggesting that the extent and abundance of A. dealbata will likely continue to increase, barring deliberate intervention. Broader changes in LULC were also apparent, multidirectional and spatio- temporally variable. Despite a net increase in A. dealbata, the invasion was found to be highly dynamic, with various LULC transitioning to A. dealbata, but in turn A. dealbata transitioning to other LULC. Indeed, biological invasions are dynamic, context-specific phenomena, shaped by the heterogeneity of landscapes. Management interventions to limit or control A. dealbata should therefore consider the spatio-temporal dynamics of invaded landscapes, as well as the local-scale abundance, productivity and biophysical conditions of the area, while taking into consideration the livelihood requirements of the local communities.
- Full Text:
- Date Issued: 2018
A survey of organizational culture and organizational performance in a manufacturing company
- Authors: Dom, Veliswa Virginia
- Date: 2018
- Subjects: Corporate culture -- South Africa -- Eastern Cape , Organizational behavior -- South Africa -- Eastern Cape , Factories -- South Africa -- Eastern Cape , Analysis of variance , Shift systems -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , Competing Values Framework (CVF)
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/61861 , vital:28069
- Description: The purpose of this research was to explore the relationship between organizational culture and organizational performance in a manufacturing company. This company supplies metal products to the motor vehicle manufacturing industry, where the quality and quantity of parts produced is of paramount importance, since the buyers of these products are quality conscious. The organization has three production shifts that rotate each week. Anecdotal observations are that irrespective of the time that a shift operates over the course of the month, the different shifts tend to perform at different levels in terms of quality and quantity of output. This study therefore sought to investigate if these differences between shifts are statistically significant, and if so, whether these shifts also have differences in organizational culture. Components of organizational culture include values, norms, beliefs, attitudes, principles and expectations that give the organization a unique personality and differentiate it from other organizations. While the literature indicates that qualitative or quantitative approaches can be used in organizational culture research, this research adopted the quantitative approach, making use of the Competing Values Framework (CVF). The CVF is a four-category organizational culture typology established by Cameron and Quinn (2006). The framework is based on two dimensions: stability or flexibility of the organization, and external or internal focus. In this research, the CVF was used as a measurement tool to evaluate organizational culture. In order to determine differences in organizational culture between shifts, a survey was undertaken (N=138) which measured employee perceptions pertaining to the existing organizational culture of each of the three production shifts at the company. Secondly, differences in performance between the shifts were examined by using the performance data for a three-month period for each shift in terms of quantity and quality. This data was obtained from the management of the production process at the company. Statistical analysis was done using ANOVA to analyse the differences between the shifts. The findings indicated that the dominant existing organizational culture at the company under investigation is a clan culture. Furthermore, there is a statistically significant difference between the cultures of all the three shifts at the manufacturing company. The results also indicated that there is a statistically significant difference in the quantity and quality of production between the three shifts. In conclusion, the research indicated there are differences in culture and in performance, but given the nature of the data, it was not possible to statistically analyse the relationship between shift culture and performance. However, it is conceivable that cultural differences between shifts may be contributing to performance differences. With regards to further research, it is recommended that this research be extended to other branches of the manufacturing company in other regions, in order to determine whether there are any significant differences in culture and performance between these branches and their shifts. Research could also be extended to other South African organizations to create a sufficiently large sample of shift and/or business units, so as to be able to do statistical analysis of the relationship between culture and performance.
- Full Text:
- Date Issued: 2018
- Authors: Dom, Veliswa Virginia
- Date: 2018
- Subjects: Corporate culture -- South Africa -- Eastern Cape , Organizational behavior -- South Africa -- Eastern Cape , Factories -- South Africa -- Eastern Cape , Analysis of variance , Shift systems -- South Africa -- Eastern Cape , Employees -- Rating of -- South Africa -- Eastern Cape , Competing Values Framework (CVF)
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/61861 , vital:28069
- Description: The purpose of this research was to explore the relationship between organizational culture and organizational performance in a manufacturing company. This company supplies metal products to the motor vehicle manufacturing industry, where the quality and quantity of parts produced is of paramount importance, since the buyers of these products are quality conscious. The organization has three production shifts that rotate each week. Anecdotal observations are that irrespective of the time that a shift operates over the course of the month, the different shifts tend to perform at different levels in terms of quality and quantity of output. This study therefore sought to investigate if these differences between shifts are statistically significant, and if so, whether these shifts also have differences in organizational culture. Components of organizational culture include values, norms, beliefs, attitudes, principles and expectations that give the organization a unique personality and differentiate it from other organizations. While the literature indicates that qualitative or quantitative approaches can be used in organizational culture research, this research adopted the quantitative approach, making use of the Competing Values Framework (CVF). The CVF is a four-category organizational culture typology established by Cameron and Quinn (2006). The framework is based on two dimensions: stability or flexibility of the organization, and external or internal focus. In this research, the CVF was used as a measurement tool to evaluate organizational culture. In order to determine differences in organizational culture between shifts, a survey was undertaken (N=138) which measured employee perceptions pertaining to the existing organizational culture of each of the three production shifts at the company. Secondly, differences in performance between the shifts were examined by using the performance data for a three-month period for each shift in terms of quantity and quality. This data was obtained from the management of the production process at the company. Statistical analysis was done using ANOVA to analyse the differences between the shifts. The findings indicated that the dominant existing organizational culture at the company under investigation is a clan culture. Furthermore, there is a statistically significant difference between the cultures of all the three shifts at the manufacturing company. The results also indicated that there is a statistically significant difference in the quantity and quality of production between the three shifts. In conclusion, the research indicated there are differences in culture and in performance, but given the nature of the data, it was not possible to statistically analyse the relationship between shift culture and performance. However, it is conceivable that cultural differences between shifts may be contributing to performance differences. With regards to further research, it is recommended that this research be extended to other branches of the manufacturing company in other regions, in order to determine whether there are any significant differences in culture and performance between these branches and their shifts. Research could also be extended to other South African organizations to create a sufficiently large sample of shift and/or business units, so as to be able to do statistical analysis of the relationship between culture and performance.
- Full Text:
- Date Issued: 2018
A thematic analysis of the challenges experienced by those living with tuberculosis
- Authors: Walaza, Robert Letsholo
- Date: 2018
- Subjects: Tuberculosis Patients South Africa , Tuberculosis Social aspects , South Africa Social conditions , Poor Health and hygiene South Africa , Poor Medical care South Africa , Social medicine South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/61850 , vital:28068
- Description: Friedrich Engels (1820-1895) in his study, The condition of the working class in England, argued that the cause of illness and death amongst the working class was due to their living conditions such as poor housing, over-crowding, poor sanitation, food shortage, low paying jobs and a lack of material resources. The objective of the study was to understand the experiences of six South African individuals who have shared their experiences and challenges of living with TB on the TB&ME blog, and to show how TB is linked to the living conditions of these individuals. The study found that the challenges experienced by TB patient bloggers are of a social nature and confirms Engel’s study findings on the conditions of the working class in England. For example, a disease such as TB has a direct association with the living conditions of people, especially the poor. Thus, socio economic status of TB patient bloggers plays a role in the escalation of their ill health. Further, the study found that gender is central in understanding non-compliance to treatment. This is significant as it highlights the need to not only focus on issues of socioeconomics, but gender issues in fighting TB. Despite the negative consequences associated with living with TB, the bloggers have noted that the support from loved ones and other stakeholders in the fight against TB alleviates the challenges inherent in living with TB.
- Full Text:
- Date Issued: 2018
- Authors: Walaza, Robert Letsholo
- Date: 2018
- Subjects: Tuberculosis Patients South Africa , Tuberculosis Social aspects , South Africa Social conditions , Poor Health and hygiene South Africa , Poor Medical care South Africa , Social medicine South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/61850 , vital:28068
- Description: Friedrich Engels (1820-1895) in his study, The condition of the working class in England, argued that the cause of illness and death amongst the working class was due to their living conditions such as poor housing, over-crowding, poor sanitation, food shortage, low paying jobs and a lack of material resources. The objective of the study was to understand the experiences of six South African individuals who have shared their experiences and challenges of living with TB on the TB&ME blog, and to show how TB is linked to the living conditions of these individuals. The study found that the challenges experienced by TB patient bloggers are of a social nature and confirms Engel’s study findings on the conditions of the working class in England. For example, a disease such as TB has a direct association with the living conditions of people, especially the poor. Thus, socio economic status of TB patient bloggers plays a role in the escalation of their ill health. Further, the study found that gender is central in understanding non-compliance to treatment. This is significant as it highlights the need to not only focus on issues of socioeconomics, but gender issues in fighting TB. Despite the negative consequences associated with living with TB, the bloggers have noted that the support from loved ones and other stakeholders in the fight against TB alleviates the challenges inherent in living with TB.
- Full Text:
- Date Issued: 2018
Advanced radio interferometric simulation and data reduction techniques
- Authors: Makhathini, Sphesihle
- Date: 2018
- Subjects: Interferometry , Radio interferometers , Algorithms , Radio telescopes , Square Kilometre Array (Project) , Very Large Array (Observatory : N.M.) , Radio astronomy
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/57348 , vital:26875
- Description: This work shows how legacy and novel radio Interferometry software packages and algorithms can be combined to produce high-quality reductions from modern telescopes, as well as end-to-end simulations for upcoming instruments such as the Square Kilometre Array (SKA) and its pathfinders. We first use a MeqTrees based simulations framework to quantify how artefacts due to direction-dependent effects accumulate with time, and the consequences of this accumulation when observing the same field multiple times in order to reach the survey depth. Our simulations suggest that a survey like LADUMA (Looking at the Distant Universe with MeerKAT Array), which aims to achieve its survey depth of 16 µJy/beam in a 72 kHz at 1.42 GHz by observing the same field for 1000 hours, will be able to reach its target depth in the presence of these artefacts. We also present stimela, a system agnostic scripting framework for simulating, processing and imaging radio interferometric data. This framework is then used to write an end-to-end simulation pipeline in order to quantify the resolution and sensitivity of the SKA1-MID telescope (the first phase of the SKA mid-frequency telescope) as a function of frequency, as well as the scale-dependent sensitivity of the telescope. Finally, a stimela-based reduction pipeline is used to process data of the field around the source 3C147, taken by the Karl G. Jansky Very Large Array (VLA). The reconstructed image from this reduction has a typical 1a noise level of 2.87 µJy/beam, and consequently a dynamic range of 8x106:1, given the 22.58 Jy/beam flux Density of the source 3C147.
- Full Text:
- Date Issued: 2018
- Authors: Makhathini, Sphesihle
- Date: 2018
- Subjects: Interferometry , Radio interferometers , Algorithms , Radio telescopes , Square Kilometre Array (Project) , Very Large Array (Observatory : N.M.) , Radio astronomy
- Language: English
- Type: text , Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/57348 , vital:26875
- Description: This work shows how legacy and novel radio Interferometry software packages and algorithms can be combined to produce high-quality reductions from modern telescopes, as well as end-to-end simulations for upcoming instruments such as the Square Kilometre Array (SKA) and its pathfinders. We first use a MeqTrees based simulations framework to quantify how artefacts due to direction-dependent effects accumulate with time, and the consequences of this accumulation when observing the same field multiple times in order to reach the survey depth. Our simulations suggest that a survey like LADUMA (Looking at the Distant Universe with MeerKAT Array), which aims to achieve its survey depth of 16 µJy/beam in a 72 kHz at 1.42 GHz by observing the same field for 1000 hours, will be able to reach its target depth in the presence of these artefacts. We also present stimela, a system agnostic scripting framework for simulating, processing and imaging radio interferometric data. This framework is then used to write an end-to-end simulation pipeline in order to quantify the resolution and sensitivity of the SKA1-MID telescope (the first phase of the SKA mid-frequency telescope) as a function of frequency, as well as the scale-dependent sensitivity of the telescope. Finally, a stimela-based reduction pipeline is used to process data of the field around the source 3C147, taken by the Karl G. Jansky Very Large Array (VLA). The reconstructed image from this reduction has a typical 1a noise level of 2.87 µJy/beam, and consequently a dynamic range of 8x106:1, given the 22.58 Jy/beam flux Density of the source 3C147.
- Full Text:
- Date Issued: 2018
Al-Shabaab and the sources of its resilience and resurgence: Cold War legacies and Jihadism in Somalia
- Authors: Gardiner, Richard
- Date: 2018
- Subjects: Shabaab (Organization) , Jihad , Cold War -- Influence , Cold War -- Social aspects -- Somalia , Somalia -- Foreign relations , Refugees, Somalian -- South Africa
- Language: English
- Type: text , Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/63833 , vital:28495
- Description: This study examines the continued development and survival of the group, Harakat al-Shabaab al-Mujahidin, commonly known as al-Shabaab – which emerged in 2006 as the militant wing of Somalia’s Islamic Courts Union and became an independent group in 2007. The group has survived in spite of the fact that it has endured significant losses of personnel, resources and territory in Somalia. The study examines al-Shabaab’s sources of resilience, resurgence and diversity. To achieve this, the study focused on the narratives of nine Somali nationals living and working in Durban, Grahamstown and Port Elizabeth, who fled their home country as a result of the ongoing violence and instability. Through understanding war as experience and placing the individual and community at the center of analysis, a people-centered approach is developed in understanding the organisation. This allows the study to challenge the state centered approaches to security and International Relations (IR) theory, which is important in the case of an armed, transnational, non-state actor such as al-Shabaab, whose operation and mobilisation requires no territorial base. The study makes use of social constructivism as a theoretical lens, as it provides an alternative way of analysing a non-state actor, specifically within an African context. The study argues that al-Shabaab's war within Somalia and East Africa is a territorial manifestation of a global phenomenon which highlights the importance of understanding its unique history within Somalia and East Africa. Importantly, the study also shows that veterans of the Afghan-Soviet war brought back ideas and tactics which have played a central part in shaping al-Shabaab's ideology and tactics. It is argued that al-Shabaab's process of decentralisation has ensured their survival but also alienated them from the Somali population. It is demonstrated that their insurgent tactics and process of intelligence gathering means that they operate in the shadows, making it difficult to locate them. Furthermore, the study shows that the role of regional actors and the presence of African Union peacekeepers have ensured that they have a constant enemy which provides a sense of cohesion and drive. The study concludes that al-Shabaab exists at a nexus of factors; its survival has and will depend on both domestic and transnational factors. Without the transnational nature of the organisation, al-Shabaab would not have become the organisation it is today. However, the future of al-Shabaab is heavily dependent on the security situation within Somalia. The immediate objectives of the group are focused within Somalia. Therefore, if the state institutions are consolidated within the country and human security levels improve, the organisation will struggle to operate with the same freedom it currently enjoys.
- Full Text:
- Date Issued: 2018
- Authors: Gardiner, Richard
- Date: 2018
- Subjects: Shabaab (Organization) , Jihad , Cold War -- Influence , Cold War -- Social aspects -- Somalia , Somalia -- Foreign relations , Refugees, Somalian -- South Africa
- Language: English
- Type: text , Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/63833 , vital:28495
- Description: This study examines the continued development and survival of the group, Harakat al-Shabaab al-Mujahidin, commonly known as al-Shabaab – which emerged in 2006 as the militant wing of Somalia’s Islamic Courts Union and became an independent group in 2007. The group has survived in spite of the fact that it has endured significant losses of personnel, resources and territory in Somalia. The study examines al-Shabaab’s sources of resilience, resurgence and diversity. To achieve this, the study focused on the narratives of nine Somali nationals living and working in Durban, Grahamstown and Port Elizabeth, who fled their home country as a result of the ongoing violence and instability. Through understanding war as experience and placing the individual and community at the center of analysis, a people-centered approach is developed in understanding the organisation. This allows the study to challenge the state centered approaches to security and International Relations (IR) theory, which is important in the case of an armed, transnational, non-state actor such as al-Shabaab, whose operation and mobilisation requires no territorial base. The study makes use of social constructivism as a theoretical lens, as it provides an alternative way of analysing a non-state actor, specifically within an African context. The study argues that al-Shabaab's war within Somalia and East Africa is a territorial manifestation of a global phenomenon which highlights the importance of understanding its unique history within Somalia and East Africa. Importantly, the study also shows that veterans of the Afghan-Soviet war brought back ideas and tactics which have played a central part in shaping al-Shabaab's ideology and tactics. It is argued that al-Shabaab's process of decentralisation has ensured their survival but also alienated them from the Somali population. It is demonstrated that their insurgent tactics and process of intelligence gathering means that they operate in the shadows, making it difficult to locate them. Furthermore, the study shows that the role of regional actors and the presence of African Union peacekeepers have ensured that they have a constant enemy which provides a sense of cohesion and drive. The study concludes that al-Shabaab exists at a nexus of factors; its survival has and will depend on both domestic and transnational factors. Without the transnational nature of the organisation, al-Shabaab would not have become the organisation it is today. However, the future of al-Shabaab is heavily dependent on the security situation within Somalia. The immediate objectives of the group are focused within Somalia. Therefore, if the state institutions are consolidated within the country and human security levels improve, the organisation will struggle to operate with the same freedom it currently enjoys.
- Full Text:
- Date Issued: 2018
Aligning local government service delivery communication with digital citizen engagement: a case study of Makana Municipality
- Authors: Machiri, Mwazvita Chipo
- Date: 2018
- Subjects: Political participation South Africa Makana , Municipal services South Africa Makana , Communication in public administration South Africa Makana , Internet in public administration South Africa Makana , Information technology South Africa Makana , Electronic government information South Africa Makana , Government accountability South Africa Makana
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/194146 , vital:45423
- Description: The effective management of local municipalities in South Africa determines the quality of service delivery to citizens. Policies and other legislation have been implemented in an attempt to improve service delivery backlogs in South Africa since post-apartheid. However, these have not been effective in meeting community needs, hence leading to poor service delivery and increased community protests of frustration. These problems are partly linked to the lack of communication between government and citizens, and within internal government. Government needs to be held accountable for the services it provides, and improve on these services through practicing transparency, providing information to citizens, and allowing citizens to provide feedback on the various challenges experienced. Information access and communication is vital to the citizen engagement process, as this supports evidence-based engagement between citizens and government. Over the most recent years, innovative ICTs have emerged as a critical strategic tool in facilitating communication between the government and its citizens, commonly referred to as digital citizen engagement. The effective implementation of such initiatives at the local government level, especially in resource-constrained contexts, is not straightforward. This research aims to develop a guiding framework for aligning municipal communication processes with innovative ICTs to support ongoing social accountability and transparency through citizen engagement in local municipalities. The formulation of this framework is built on the Adaptive Structuration Theory, which is based on studying organisational change that occurs due to implementation and adoption of technology. Using a pragmatist approach and case study of Makana Municipality, the research study investigates a digital citizen engagement initiative called MobiSAM (Mobile Social Accountability Monitoring). The key findings from the qualitative empirical investigation indicates that there are significant social and political factors to consider when aligning Digital Citizen Engagement initiatives in a resource-constrained environment. The findings illustrated that the change and alignment process of DCE in local municipalities rely on a diverse set of inputs from different stakeholders, and a dynamic change process, which result in key citizen engagement outcomes of empowerment, accountability, transparency, and increased engagement depending – all depending on the success of the process. The extent of the outcomes will vary with the effectiveness of change management, idea generation, and participation, which Preliminaries are impacted by perceived usefulness, attitude towards the system, and the intentions of the user. The proposed framework provides a guideline for the implementation and introduction of innovations ICTs for citizen engagement at local government level. , Thesis (MCom) -- Faculty of Commerce, Information Systems, 2018
- Full Text:
- Date Issued: 2018
- Authors: Machiri, Mwazvita Chipo
- Date: 2018
- Subjects: Political participation South Africa Makana , Municipal services South Africa Makana , Communication in public administration South Africa Makana , Internet in public administration South Africa Makana , Information technology South Africa Makana , Electronic government information South Africa Makana , Government accountability South Africa Makana
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/194146 , vital:45423
- Description: The effective management of local municipalities in South Africa determines the quality of service delivery to citizens. Policies and other legislation have been implemented in an attempt to improve service delivery backlogs in South Africa since post-apartheid. However, these have not been effective in meeting community needs, hence leading to poor service delivery and increased community protests of frustration. These problems are partly linked to the lack of communication between government and citizens, and within internal government. Government needs to be held accountable for the services it provides, and improve on these services through practicing transparency, providing information to citizens, and allowing citizens to provide feedback on the various challenges experienced. Information access and communication is vital to the citizen engagement process, as this supports evidence-based engagement between citizens and government. Over the most recent years, innovative ICTs have emerged as a critical strategic tool in facilitating communication between the government and its citizens, commonly referred to as digital citizen engagement. The effective implementation of such initiatives at the local government level, especially in resource-constrained contexts, is not straightforward. This research aims to develop a guiding framework for aligning municipal communication processes with innovative ICTs to support ongoing social accountability and transparency through citizen engagement in local municipalities. The formulation of this framework is built on the Adaptive Structuration Theory, which is based on studying organisational change that occurs due to implementation and adoption of technology. Using a pragmatist approach and case study of Makana Municipality, the research study investigates a digital citizen engagement initiative called MobiSAM (Mobile Social Accountability Monitoring). The key findings from the qualitative empirical investigation indicates that there are significant social and political factors to consider when aligning Digital Citizen Engagement initiatives in a resource-constrained environment. The findings illustrated that the change and alignment process of DCE in local municipalities rely on a diverse set of inputs from different stakeholders, and a dynamic change process, which result in key citizen engagement outcomes of empowerment, accountability, transparency, and increased engagement depending – all depending on the success of the process. The extent of the outcomes will vary with the effectiveness of change management, idea generation, and participation, which Preliminaries are impacted by perceived usefulness, attitude towards the system, and the intentions of the user. The proposed framework provides a guideline for the implementation and introduction of innovations ICTs for citizen engagement at local government level. , Thesis (MCom) -- Faculty of Commerce, Information Systems, 2018
- Full Text:
- Date Issued: 2018
An action research approach: developing intercultural competence in German Studies at Rhodes University
- Authors: Collins, Morgan Gwyneth
- Date: 2018
- Subjects: Action research in education -- South Africa -- Makhanda , German language -- Study and teaching -- Foreign speakers , Cultural relations , Multicultural education , World citizenship
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63910 , vital:28505
- Description: The need to develop interculturally competent graduates is a concern for universities across the world. In South African universities this need is linked to globalization and increased diversity in terms of student demographics since 1994. Considering the legacy of apartheid, South African universities especially, and pressingly, need to respond to both global and national diversity concerns. ICC can play a significant role in creating more culturally inclusive spaces as students are provided with opportunities to “relate to and with people from vastly different cultural and ethnic backgrounds” (Spitzberg & Changnon, 2009, p. 4). In a similar way, Germany has faced, and continues to face, challenges relating to diversity especially in relation to migrants and as such, interculturality is a topic of debate in society and scholarly discourse. Therefore, ICC is as relevant to German society as it is South African society. Courses that explicitly deal with ICC are however, not common in South African universities and discourse, and as a result universities are “missing out on developing students’ intercultural competence” (Deardorff & Quinlan, 2016). This thesis aimed to address this gap by investigating the viability and necessity of introducing a module that deals explicitly with ICC into the German Studies course at Rhodes University. In doing so it contributed to the creation of disciplinary knowledge as well as furthering the aim of aiding the creation of responsible global citizenship, alongside ‘academic citizenship’, and aiding the internationalisation at home concept by encouraging the students to understand their own lived reality in a diverse society. This research made use of an action research approach to implementing a module and tracing its development. Student responses, as well as reflection and observation, found that a module dealing explicitly with ICC was viable and able to contribute to developing students’ sense of cultural self-awareness and their awareness of ICC as a set of transferrable skills and knowledges. This module aimed to serve as an introduction to ICC for students in order to begin to develop their intercultural competence and increase their awareness and critical approach to culture and intercultural encounters.
- Full Text:
- Date Issued: 2018
- Authors: Collins, Morgan Gwyneth
- Date: 2018
- Subjects: Action research in education -- South Africa -- Makhanda , German language -- Study and teaching -- Foreign speakers , Cultural relations , Multicultural education , World citizenship
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/63910 , vital:28505
- Description: The need to develop interculturally competent graduates is a concern for universities across the world. In South African universities this need is linked to globalization and increased diversity in terms of student demographics since 1994. Considering the legacy of apartheid, South African universities especially, and pressingly, need to respond to both global and national diversity concerns. ICC can play a significant role in creating more culturally inclusive spaces as students are provided with opportunities to “relate to and with people from vastly different cultural and ethnic backgrounds” (Spitzberg & Changnon, 2009, p. 4). In a similar way, Germany has faced, and continues to face, challenges relating to diversity especially in relation to migrants and as such, interculturality is a topic of debate in society and scholarly discourse. Therefore, ICC is as relevant to German society as it is South African society. Courses that explicitly deal with ICC are however, not common in South African universities and discourse, and as a result universities are “missing out on developing students’ intercultural competence” (Deardorff & Quinlan, 2016). This thesis aimed to address this gap by investigating the viability and necessity of introducing a module that deals explicitly with ICC into the German Studies course at Rhodes University. In doing so it contributed to the creation of disciplinary knowledge as well as furthering the aim of aiding the creation of responsible global citizenship, alongside ‘academic citizenship’, and aiding the internationalisation at home concept by encouraging the students to understand their own lived reality in a diverse society. This research made use of an action research approach to implementing a module and tracing its development. Student responses, as well as reflection and observation, found that a module dealing explicitly with ICC was viable and able to contribute to developing students’ sense of cultural self-awareness and their awareness of ICC as a set of transferrable skills and knowledges. This module aimed to serve as an introduction to ICC for students in order to begin to develop their intercultural competence and increase their awareness and critical approach to culture and intercultural encounters.
- Full Text:
- Date Issued: 2018
An activity theoretical investigation into how leadership can be developed within a group of class monitors in a Namibian secondary school
- Authors: Kalimbo, Tomas
- Date: 2018
- Subjects: School management and organization -- Namibia , Educational leadership -- Namibia , Education, Secondary -- Namibia , Student government -- Namibia , Student participation in administration -- Namibia , Cultural Historical Activity Theory
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61734 , vital:28053
- Description: Literature suggests that developing leadership in learners benefits them and their schools in general. Learners are prepared as future leaders and they gain leadership skills and democratic values and principles. Learner leaders therefore contribute to transformation in their schools. However, research on the same topic has also found that learners have limited leadership development opportunities, as they are not authentically and democratically involved in leadership in many schools. Informed by the distributed perspective of leadership, this study investigates how leadership can be developed within a group of class monitors in a Namibian secondary school. Its overarching goal was to develop leadership and build transformative agency within class monitors. The study was designed as an interventionist study, theoretically and analytically framed by Engestrom’s second generation of Cultural Historical Activity Theory (CHAT). Multiple methods were used for data collection, including questionnaires, semi-structured interviews, document analysis and Change Laboratory workshops. Data analysis took the form of content analysis and coding, as well as using the CHAT lens to surface contradictions. The findings of the study revealed that there was conceptual awareness on what learner leadership and leadership development meant among participants. However, little was being done to develop leadership in class monitors. Traditional leadership practices and cultural belief that learners are mere children, as well as confinement to formal leadership structures and policies were the main hindering inner contradictions within the research school. A formative intervention was instituted through the Change Laboratory workshop process and it resulted in leadership training to capacitate and empower class monitors, as well as enhance their transformative agency. The study thus recommends for a shift from traditional autocratic leadership practices to a contemporary distributed perspective of leadership that recognises the need to develop leadership in learners.
- Full Text:
- Date Issued: 2018
- Authors: Kalimbo, Tomas
- Date: 2018
- Subjects: School management and organization -- Namibia , Educational leadership -- Namibia , Education, Secondary -- Namibia , Student government -- Namibia , Student participation in administration -- Namibia , Cultural Historical Activity Theory
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/61734 , vital:28053
- Description: Literature suggests that developing leadership in learners benefits them and their schools in general. Learners are prepared as future leaders and they gain leadership skills and democratic values and principles. Learner leaders therefore contribute to transformation in their schools. However, research on the same topic has also found that learners have limited leadership development opportunities, as they are not authentically and democratically involved in leadership in many schools. Informed by the distributed perspective of leadership, this study investigates how leadership can be developed within a group of class monitors in a Namibian secondary school. Its overarching goal was to develop leadership and build transformative agency within class monitors. The study was designed as an interventionist study, theoretically and analytically framed by Engestrom’s second generation of Cultural Historical Activity Theory (CHAT). Multiple methods were used for data collection, including questionnaires, semi-structured interviews, document analysis and Change Laboratory workshops. Data analysis took the form of content analysis and coding, as well as using the CHAT lens to surface contradictions. The findings of the study revealed that there was conceptual awareness on what learner leadership and leadership development meant among participants. However, little was being done to develop leadership in class monitors. Traditional leadership practices and cultural belief that learners are mere children, as well as confinement to formal leadership structures and policies were the main hindering inner contradictions within the research school. A formative intervention was instituted through the Change Laboratory workshop process and it resulted in leadership training to capacitate and empower class monitors, as well as enhance their transformative agency. The study thus recommends for a shift from traditional autocratic leadership practices to a contemporary distributed perspective of leadership that recognises the need to develop leadership in learners.
- Full Text:
- Date Issued: 2018
An analysis of fusing advanced malware email protection logs, malware intelligence and active directory attributes as an instrument for threat intelligence
- Authors: Vermeulen, Japie
- Date: 2018
- Subjects: Malware (Computer software) , Computer networks Security measures , Data mining , Phishing , Data logging , Quantitative research
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63922 , vital:28506
- Description: After more than four decades email is still the most widely used electronic communication medium today. This electronic communication medium has evolved into an electronic weapon of choice for cyber criminals ranging from the novice to the elite. As cyber criminals evolve with tools, tactics and procedures, so too are technology vendors coming forward with a variety of advanced malware protection systems. However, even if an organization adopts such a system, there is still the daily challenge of interpreting the log data and understanding the type of malicious email attack, including who the target was and what the payload was. This research examines a six month data set obtained from an advanced malware email protection system from a bank in South Africa. Extensive data fusion techniques are used to provide deeper insight into the data by blending these with malware intelligence and business context. The primary data set is fused with malware intelligence to identify the different malware families associated with the samples. Active Directory attributes such as the business cluster, department and job title of users targeted by malware are also fused into the combined data. This study provides insight into malware attacks experienced in the South African financial services sector. For example, most of the malware samples identified belonged to different types of ransomware families distributed by known botnets. However, indicators of targeted attacks were observed based on particular employees targeted with exploit code and specific strains of malware. Furthermore, a short time span between newly discovered vulnerabilities and the use of malicious code to exploit such vulnerabilities through email were observed in this study. The fused data set provided the context to answer the “who”, “what”, “where” and “when”. The proposed methodology can be applied to any organization to provide insight into the malware threats identified by advanced malware email protection systems. In addition, the fused data set provides threat intelligence that could be used to strengthen the cyber defences of an organization against cyber threats.
- Full Text:
- Date Issued: 2018
- Authors: Vermeulen, Japie
- Date: 2018
- Subjects: Malware (Computer software) , Computer networks Security measures , Data mining , Phishing , Data logging , Quantitative research
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63922 , vital:28506
- Description: After more than four decades email is still the most widely used electronic communication medium today. This electronic communication medium has evolved into an electronic weapon of choice for cyber criminals ranging from the novice to the elite. As cyber criminals evolve with tools, tactics and procedures, so too are technology vendors coming forward with a variety of advanced malware protection systems. However, even if an organization adopts such a system, there is still the daily challenge of interpreting the log data and understanding the type of malicious email attack, including who the target was and what the payload was. This research examines a six month data set obtained from an advanced malware email protection system from a bank in South Africa. Extensive data fusion techniques are used to provide deeper insight into the data by blending these with malware intelligence and business context. The primary data set is fused with malware intelligence to identify the different malware families associated with the samples. Active Directory attributes such as the business cluster, department and job title of users targeted by malware are also fused into the combined data. This study provides insight into malware attacks experienced in the South African financial services sector. For example, most of the malware samples identified belonged to different types of ransomware families distributed by known botnets. However, indicators of targeted attacks were observed based on particular employees targeted with exploit code and specific strains of malware. Furthermore, a short time span between newly discovered vulnerabilities and the use of malicious code to exploit such vulnerabilities through email were observed in this study. The fused data set provided the context to answer the “who”, “what”, “where” and “when”. The proposed methodology can be applied to any organization to provide insight into the malware threats identified by advanced malware email protection systems. In addition, the fused data set provides threat intelligence that could be used to strengthen the cyber defences of an organization against cyber threats.
- Full Text:
- Date Issued: 2018
An analysis of how visualisation processes can be used by teachers participating in an intervention programme to teach for conceptual understanding of geometry
- Authors: Muhembo, Gottfried Mbundu
- Date: 2018
- Subjects: Geometry -- Study and teaching (Secondary) -- Namibia -- Kavango East , Visualization , Mathematics teachers -- Namibia -- Kavango East , Effective teaching -- Namibia -- Kavango East , Mathematics -- Study and teaching -- Activity programs
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/62439 , vital:28190
- Description: Visualisation in general and visualisation processes in particular have received much attention in the mathematics education research literature. Literature suggests that the appropriate use of visualisation helps learners to develop their conceptual understanding and skills of geometry as it allows them to visually interpret and understand fundamental mathematical and geometrical concepts. It is claimed that visual tools play an important role in communicating mathematical ideas through diagrams, gestures, images, sketches or drawings. Learning mathematics through visualisation can be a powerful tool to explore mathematical problems and give meaning to mathematical concepts and relationships between them. This interpretive case study focused on how selected teachers taught concepts in geometry through visualisation processes for conceptual understanding as a result of an intervention programme. The study was conducted at four high schools by four mathematics teachers in the Kavango East Region in Northern Namibia. The participants were involved in a three-week intervention programme and afterwards taught three lessons each on the topic of geometry. The data collection method of this research was: focus group and stimulus recall interviews, classroom observations and recorded videos. This research is located in constructivism. I used vertical and horizontal analysis strategies to analyse the data. My analytical instrument consisted of an observation schedule which I used in each lesson to identify how each of the visualisation processes was evident in each of the observed lessons. This study revealed that the participant teachers used visualisation processes in most of their lessons and these processes were used accurately in line with the requirements of the grade 8 mathematics syllabi. The visualisation processes were used through designed visual materials, posters and through the use of geometrical objects such as chalkboard ruler, protractor and compass. The results from this study also confirmed that visualisation processes can be a powerful instructional tool for enhancing learners’ conceptual understanding of geometry.
- Full Text:
- Date Issued: 2018
- Authors: Muhembo, Gottfried Mbundu
- Date: 2018
- Subjects: Geometry -- Study and teaching (Secondary) -- Namibia -- Kavango East , Visualization , Mathematics teachers -- Namibia -- Kavango East , Effective teaching -- Namibia -- Kavango East , Mathematics -- Study and teaching -- Activity programs
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: http://hdl.handle.net/10962/62439 , vital:28190
- Description: Visualisation in general and visualisation processes in particular have received much attention in the mathematics education research literature. Literature suggests that the appropriate use of visualisation helps learners to develop their conceptual understanding and skills of geometry as it allows them to visually interpret and understand fundamental mathematical and geometrical concepts. It is claimed that visual tools play an important role in communicating mathematical ideas through diagrams, gestures, images, sketches or drawings. Learning mathematics through visualisation can be a powerful tool to explore mathematical problems and give meaning to mathematical concepts and relationships between them. This interpretive case study focused on how selected teachers taught concepts in geometry through visualisation processes for conceptual understanding as a result of an intervention programme. The study was conducted at four high schools by four mathematics teachers in the Kavango East Region in Northern Namibia. The participants were involved in a three-week intervention programme and afterwards taught three lessons each on the topic of geometry. The data collection method of this research was: focus group and stimulus recall interviews, classroom observations and recorded videos. This research is located in constructivism. I used vertical and horizontal analysis strategies to analyse the data. My analytical instrument consisted of an observation schedule which I used in each lesson to identify how each of the visualisation processes was evident in each of the observed lessons. This study revealed that the participant teachers used visualisation processes in most of their lessons and these processes were used accurately in line with the requirements of the grade 8 mathematics syllabi. The visualisation processes were used through designed visual materials, posters and through the use of geometrical objects such as chalkboard ruler, protractor and compass. The results from this study also confirmed that visualisation processes can be a powerful instructional tool for enhancing learners’ conceptual understanding of geometry.
- Full Text:
- Date Issued: 2018