Fanon’s Curse: re-imagining Marxism in South Africa’s age of retreat
- Helliker, Kirk D, Vale, Peter C J
- Authors: Helliker, Kirk D , Vale, Peter C J
- Date: 2009
- Language: English
- Type: conference paper , text
- Identifier: http://hdl.handle.net/10962/61029 , vital:27924 , http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.587.740&rep=rep1&type=pdf
- Description: Given its growing, even dark, reputation for xenophobia, it seems extraordinary that South Africa remains open to ideas from the outside. Fifteen years after apartheid in South Africa ended, the country’s great cities are branded with the same imported images that clutter glittering malls in New York, London or Sydney. The rapidity of this makeover from apartheid’s grey conformity is held to be testimony to the success of neo-liberal globalisation which was enthusiastically embraced with apartheid’s ending.
- Full Text:
- Authors: Helliker, Kirk D , Vale, Peter C J
- Date: 2009
- Language: English
- Type: conference paper , text
- Identifier: http://hdl.handle.net/10962/61029 , vital:27924 , http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.587.740&rep=rep1&type=pdf
- Description: Given its growing, even dark, reputation for xenophobia, it seems extraordinary that South Africa remains open to ideas from the outside. Fifteen years after apartheid in South Africa ended, the country’s great cities are branded with the same imported images that clutter glittering malls in New York, London or Sydney. The rapidity of this makeover from apartheid’s grey conformity is held to be testimony to the success of neo-liberal globalisation which was enthusiastically embraced with apartheid’s ending.
- Full Text:
Film Review: Hollywood on Safari
- Authors: Amner, Roderick J
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/142680 , vital:38101 , https://doi.org/10.1386/jams.1.2.335_4
- Description: Film Review: Hollywood on Safari.
- Full Text:
- Authors: Amner, Roderick J
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/142680 , vital:38101 , https://doi.org/10.1386/jams.1.2.335_4
- Description: Film Review: Hollywood on Safari.
- Full Text:
Finite fuzzy sets, keychains and their applications
- Authors: Mahlasela, Zuko
- Date: 2009
- Subjects: Fuzzy sets , Finite groups , Lattice theory , Economics -- Mathematical models
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5406 , http://hdl.handle.net/10962/d1005220 , Fuzzy sets , Finite groups , Lattice theory , Economics -- Mathematical models
- Description: The idea of keychains, an (n+1)-tuple of non-increasing real numbers in the unit interval always including 1, naturally arises in study of finite fuzzy set theory. They are a useful concept in modeling ideas of uncertainty especially those that arise in Economics, Social Sciences, Statistics and other subjects. In this thesis we define and study some basic properties of keychains with reference to Partially Ordered Sets, Lattices, Chains and Finite Fuzzy Sets. We then examine the role of keychains and their lattice diagrams in representing uncertainties that arise in such problems as in preferential voting patterns, outcomes of competitions and in Economics - Preference Relations.
- Full Text:
- Authors: Mahlasela, Zuko
- Date: 2009
- Subjects: Fuzzy sets , Finite groups , Lattice theory , Economics -- Mathematical models
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5406 , http://hdl.handle.net/10962/d1005220 , Fuzzy sets , Finite groups , Lattice theory , Economics -- Mathematical models
- Description: The idea of keychains, an (n+1)-tuple of non-increasing real numbers in the unit interval always including 1, naturally arises in study of finite fuzzy set theory. They are a useful concept in modeling ideas of uncertainty especially those that arise in Economics, Social Sciences, Statistics and other subjects. In this thesis we define and study some basic properties of keychains with reference to Partially Ordered Sets, Lattices, Chains and Finite Fuzzy Sets. We then examine the role of keychains and their lattice diagrams in representing uncertainties that arise in such problems as in preferential voting patterns, outcomes of competitions and in Economics - Preference Relations.
- Full Text:
Flies in the ointment a morphological and molecular comparison of Lucilia cuprina and Lucilia sericata (Diptera: Calliphoridae) in South Africa
- Tourle, Robyn, Downie, Douglas A, Villet, Martin H
- Authors: Tourle, Robyn , Downie, Douglas A , Villet, Martin H
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/442156 , vital:73963 , https://doi.org/10.1111/j.1365-2915.2008.00765.x
- Description: Complementary nuclear (28S rRNA) and mitochondrial (COI) genes were sequenced from blowflies that phenotypically resembled Lucilia cuprina (W.), Lucilia sericata (Meigen) or exhibited characters of both species. The aim was to test a long‐held hypothesis that these species hybridize under natural conditions in South Africa (Ullyett, 1945). Blowflies were obtained predominantly from the Cape Town metropolitan area, but reference samples were acquired for L. sericata from Pretoria. Several L. cuprina‐like flies were shown to possess a conflicting combination of nuclear and mitochondrial genes that has also been seen in Hawaiian specimens. Homoplasy, sampling of pseudogenes, hybridization and incomplete lineage sorting are discussed as possible hypotheses for the pattern and the latter is concluded to represent the most likely explanation.
- Full Text:
- Authors: Tourle, Robyn , Downie, Douglas A , Villet, Martin H
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/442156 , vital:73963 , https://doi.org/10.1111/j.1365-2915.2008.00765.x
- Description: Complementary nuclear (28S rRNA) and mitochondrial (COI) genes were sequenced from blowflies that phenotypically resembled Lucilia cuprina (W.), Lucilia sericata (Meigen) or exhibited characters of both species. The aim was to test a long‐held hypothesis that these species hybridize under natural conditions in South Africa (Ullyett, 1945). Blowflies were obtained predominantly from the Cape Town metropolitan area, but reference samples were acquired for L. sericata from Pretoria. Several L. cuprina‐like flies were shown to possess a conflicting combination of nuclear and mitochondrial genes that has also been seen in Hawaiian specimens. Homoplasy, sampling of pseudogenes, hybridization and incomplete lineage sorting are discussed as possible hypotheses for the pattern and the latter is concluded to represent the most likely explanation.
- Full Text:
Fluorescence studies of quantum dots and zinc tetraamino phthalocyanine conjugates
- Britton, Jonathan, Antunes, Edith M, Nyokong, Tebello
- Authors: Britton, Jonathan , Antunes, Edith M , Nyokong, Tebello
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6565 , http://hdl.handle.net/10962/d1004124
- Description: CdTe Qds capped with mercapto propionic acid (MPA) were covalently linked to zinc tetraamino phthalocyanine (ZnTAPc) using N-ethyl-N(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxy succinimide (NHS) as the coupling agents. The results presented give evidence in favour of the formation of an amide bond between ZnTAPc and CdTe QDs. Both the linked ZnTAPc–QD complexes and a mixture of QDs and ZnTAPc (i.e. without chemical linking) showed Förster resonance energy transfer (FRET). ZnTAPc quenched the QDs emission, giving quenching constants in the order of 103 M−1.
- Full Text:
- Authors: Britton, Jonathan , Antunes, Edith M , Nyokong, Tebello
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6565 , http://hdl.handle.net/10962/d1004124
- Description: CdTe Qds capped with mercapto propionic acid (MPA) were covalently linked to zinc tetraamino phthalocyanine (ZnTAPc) using N-ethyl-N(3-dimethylaminopropyl) carbodiimide (EDC) and N-hydroxy succinimide (NHS) as the coupling agents. The results presented give evidence in favour of the formation of an amide bond between ZnTAPc and CdTe QDs. Both the linked ZnTAPc–QD complexes and a mixture of QDs and ZnTAPc (i.e. without chemical linking) showed Förster resonance energy transfer (FRET). ZnTAPc quenched the QDs emission, giving quenching constants in the order of 103 M−1.
- Full Text:
Forecasting solar cycle 24 using neural networks
- Authors: Uwamahoro, Jean
- Date: 2009
- Subjects: Solar cycle , Neural networks (Computer science) , Ionosphere , Ionospheric electron density , Ionospheric forecasting , Solar thermal energy
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5468 , http://hdl.handle.net/10962/d1005253 , Solar cycle , Neural networks (Computer science) , Ionosphere , Ionospheric electron density , Ionospheric forecasting , Solar thermal energy
- Description: The ability to predict the future behavior of solar activity has become of extreme importance due to its effect on the near-Earth environment. Predictions of both the amplitude and timing of the next solar cycle will assist in estimating the various consequences of Space Weather. Several prediction techniques have been applied and have achieved varying degrees of success in the domain of solar activity prediction. These techniques include, for example, neural networks and geomagnetic precursor methods. In this thesis, various neural network based models were developed and the model considered to be optimum was used to estimate the shape and timing of solar cycle 24. Given the recent success of the geomagnetic precusrsor methods, geomagnetic activity as measured by the aa index is considered among the main inputs to the neural network model. The neural network model developed is also provided with the time input parameters defining the year and the month of a particular solar cycle, in order to characterise the temporal behaviour of sunspot number as observed during the last 10 solar cycles. The structure of input-output patterns to the neural network is constructed in such a way that the network learns the relationship between the aa index values of a particular cycle, and the sunspot number values of the following cycle. Assuming January 2008 as the minimum preceding solar cycle 24, the shape and amplitude of solar cycle 24 is estimated in terms of monthly mean and smoothed monthly sunspot number. This new prediction model estimates an average solar cycle 24, with the maximum occurring around June 2012 [± 11 months], with a smoothed monthly maximum sunspot number of 121 ± 9.
- Full Text:
- Authors: Uwamahoro, Jean
- Date: 2009
- Subjects: Solar cycle , Neural networks (Computer science) , Ionosphere , Ionospheric electron density , Ionospheric forecasting , Solar thermal energy
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5468 , http://hdl.handle.net/10962/d1005253 , Solar cycle , Neural networks (Computer science) , Ionosphere , Ionospheric electron density , Ionospheric forecasting , Solar thermal energy
- Description: The ability to predict the future behavior of solar activity has become of extreme importance due to its effect on the near-Earth environment. Predictions of both the amplitude and timing of the next solar cycle will assist in estimating the various consequences of Space Weather. Several prediction techniques have been applied and have achieved varying degrees of success in the domain of solar activity prediction. These techniques include, for example, neural networks and geomagnetic precursor methods. In this thesis, various neural network based models were developed and the model considered to be optimum was used to estimate the shape and timing of solar cycle 24. Given the recent success of the geomagnetic precusrsor methods, geomagnetic activity as measured by the aa index is considered among the main inputs to the neural network model. The neural network model developed is also provided with the time input parameters defining the year and the month of a particular solar cycle, in order to characterise the temporal behaviour of sunspot number as observed during the last 10 solar cycles. The structure of input-output patterns to the neural network is constructed in such a way that the network learns the relationship between the aa index values of a particular cycle, and the sunspot number values of the following cycle. Assuming January 2008 as the minimum preceding solar cycle 24, the shape and amplitude of solar cycle 24 is estimated in terms of monthly mean and smoothed monthly sunspot number. This new prediction model estimates an average solar cycle 24, with the maximum occurring around June 2012 [± 11 months], with a smoothed monthly maximum sunspot number of 121 ± 9.
- Full Text:
Foreign policy ambiguity on the part of an emergent middle power: South African foreign policy through other lenses
- Serrão, Olivier, Bischoff, Paul, 1954-
- Authors: Serrão, Olivier , Bischoff, Paul, 1954-
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/161464 , vital:40629 , DOI: 10.1080/02589341003600189
- Description: This paper attempts to address the ambiguity so frequently highlighted in South Africa's post-apartheid foreign policy. Three central arguments are put forward. Firstly, it is argued that traditional accounts of South Africa's foreign policy, utilizing rationalist or ‘mainstream’ theories of International Relations, are insufficient in themselves to explain the complexities inherent in the country's foreign policy. In this regard, constructivist IR theory offers several key insights into studies of South Africa's foreign policy. Secondly, although it is argued that constructivism, particularly its focus on identity, is crucial to understanding South African foreign policy, it alone cannot sufficiently explain its reception or results on the world stage. Finally, it is argued that in order to fully appreciate both the nature and effects of South Africa's foreign policy, a mixed focus, incorporating insights from both constructivist and materialist-based theories of IR, is necessary.
- Full Text:
- Authors: Serrão, Olivier , Bischoff, Paul, 1954-
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/161464 , vital:40629 , DOI: 10.1080/02589341003600189
- Description: This paper attempts to address the ambiguity so frequently highlighted in South Africa's post-apartheid foreign policy. Three central arguments are put forward. Firstly, it is argued that traditional accounts of South Africa's foreign policy, utilizing rationalist or ‘mainstream’ theories of International Relations, are insufficient in themselves to explain the complexities inherent in the country's foreign policy. In this regard, constructivist IR theory offers several key insights into studies of South Africa's foreign policy. Secondly, although it is argued that constructivism, particularly its focus on identity, is crucial to understanding South African foreign policy, it alone cannot sufficiently explain its reception or results on the world stage. Finally, it is argued that in order to fully appreciate both the nature and effects of South Africa's foreign policy, a mixed focus, incorporating insights from both constructivist and materialist-based theories of IR, is necessary.
- Full Text:
Framing economic news: an examination of coverage of the Growth, Employment and Redistribution (GEAR) strategy in Business Day
- Authors: Mudzamiri, Wonder Tariro
- Date: 2009
- Subjects: Business day English newspapers -- South Africa South African newspapers Mass media -- Economic aspects Economic development -- South Africa South Africa -- Economic policy South Africa -- Politics and government -- 1994-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3469 , http://hdl.handle.net/10962/d1002924
- Description: This thesis examines the way in which Business Day portrayed the neo-liberal logic of the Growth, Employment and Redistribution (GEAR) strategy as both common sense and natural. It utilises framing analysis, adapting its application to the context of media studies as the guiding theoretical framework in trying to understand how Business Day, as representative of the mainstream financial media, frame economic policy issues. Using content analysis, the thesis examines how elite sources are the preferred news sources above ordinary citizens and are thus in a position to shape news content in line with their neo-liberal views on the economy. The thesis analyses how Business Day, by means of the globalisation frame and other frames, legitimated and in the process perpetuated the GEAR strategy as the macroeconomic policy of choice for South Africa in 1996 against the background of the country’s political transformation and economic policy development in preceding years.
- Full Text:
- Authors: Mudzamiri, Wonder Tariro
- Date: 2009
- Subjects: Business day English newspapers -- South Africa South African newspapers Mass media -- Economic aspects Economic development -- South Africa South Africa -- Economic policy South Africa -- Politics and government -- 1994-
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3469 , http://hdl.handle.net/10962/d1002924
- Description: This thesis examines the way in which Business Day portrayed the neo-liberal logic of the Growth, Employment and Redistribution (GEAR) strategy as both common sense and natural. It utilises framing analysis, adapting its application to the context of media studies as the guiding theoretical framework in trying to understand how Business Day, as representative of the mainstream financial media, frame economic policy issues. Using content analysis, the thesis examines how elite sources are the preferred news sources above ordinary citizens and are thus in a position to shape news content in line with their neo-liberal views on the economy. The thesis analyses how Business Day, by means of the globalisation frame and other frames, legitimated and in the process perpetuated the GEAR strategy as the macroeconomic policy of choice for South Africa in 1996 against the background of the country’s political transformation and economic policy development in preceding years.
- Full Text:
Gains derived from illegal activities :an analysis of the taxation consequences
- Mtshawulana, Lungiswa Bukeka
- Authors: Mtshawulana, Lungiswa Bukeka
- Date: 2009
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:886 , http://hdl.handle.net/10962/d1001640
- Description: Income Tax in South Africa is levied in terms of the Income Tax Act 58 of 1962 on taxable income, which, by definition, is arrived at by deducting from "gross income" receipts and accruals that are exempt from tax as well as deductions and allowances provided for in the Act. The Income Tax Act provides no guidance with regard to the taxation of illegal activities, except to prohibit the deduction of expenditure incurred in paying fines or in relation to corrupt activities, as defined. An analysis of the taxation of income derived from theft, fraud and prostitution and the deductibility of expenses relating to that income, is the question addressed in this thesis. In this thesis, an analysis was made of relevant case law in relation to the provisions of the Income Tax Act in an attempt to provide clarity. A brief comparison was also macie of American, United Kingdom and South African tax law. Similarities were found between the American, United Kingdom and South African tax regimes in relation to the taxation of income, but there appeared to be more certainty in America and the United Kingdom in relation to the deduction of expenses. The thesis concludes that recent case decisions have provided certainty in relation to income from illegal activities, but the tax status of the deduction of expenses remains uncertain.
- Full Text:
- Authors: Mtshawulana, Lungiswa Bukeka
- Date: 2009
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:886 , http://hdl.handle.net/10962/d1001640
- Description: Income Tax in South Africa is levied in terms of the Income Tax Act 58 of 1962 on taxable income, which, by definition, is arrived at by deducting from "gross income" receipts and accruals that are exempt from tax as well as deductions and allowances provided for in the Act. The Income Tax Act provides no guidance with regard to the taxation of illegal activities, except to prohibit the deduction of expenditure incurred in paying fines or in relation to corrupt activities, as defined. An analysis of the taxation of income derived from theft, fraud and prostitution and the deductibility of expenses relating to that income, is the question addressed in this thesis. In this thesis, an analysis was made of relevant case law in relation to the provisions of the Income Tax Act in an attempt to provide clarity. A brief comparison was also macie of American, United Kingdom and South African tax law. Similarities were found between the American, United Kingdom and South African tax regimes in relation to the taxation of income, but there appeared to be more certainty in America and the United Kingdom in relation to the deduction of expenses. The thesis concludes that recent case decisions have provided certainty in relation to income from illegal activities, but the tax status of the deduction of expenses remains uncertain.
- Full Text:
Geomagnetically induced current characteristics in southern Africa
- Authors: Ngwira, Chigomezyo Mudala
- Date: 2009
- Subjects: Magnetic Observatory (South African Council for Scientific and Industrial Research) Geomagnetism -- Africa,Southern Computer networks -- Africa, Southern Magnetospheric currents
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5469 , http://hdl.handle.net/10962/d1005254
- Description: Geomagnetically induced currents (GICs), resulting from adverse space weather, have been demonstrated to cause damage to power transformers at mid-latitudes. There is growing concern over possible GIC effects in the Southern African network due to its long power lines. Previous efforts to model the electric field associated with GICs in the Southern Africa region used a uniform ground conductivity model. In an effort to improve the modelling of GICs, GIC data together with Hermanus Magnetic Observatory geomagnetic field data were used to obtain a multilayered ground conductivity model. This process requires a definition of the network coefficients, which are then used in subsequent calculations. This study shows that GIC computed with the new network coefficients and the multilayered ground conductivity model improves the accuracy of GIC modelling. Then GIC statistics are derived based on the recordings of the geomagnetic field at Hermanus, the new network coefficients and ground conductivity model. The geoelectric field is modelled using the plane wave method. The properties of the geomagnetic field, their time derivatives and local geomagnetic indices were investigated to determine their characteristics in relation to the GIC. The pattern of the time derivatives of the horizontal geomagnetic field closely follow the rate of change of the north-south geomagnetic component rather than the east-west component. The correlation between the GIC and the local geomagnetic field indices was also investigated. The results show that there is a higher correlation between the GIC and the east-west components of the geomagnetic local indices than between the GIC and the north-south components. This corresponds very well with the orientation of the power lines feeding the power transformers at the South African Grassridge electrical substation GIC site. Thus, the geoelectric field driving the GIC at Grassridge is north-south oriented. Further, it is shown that the geomagnetic observation sites have a strong directional preference with respect to the Grassridge GIC site.
- Full Text:
- Authors: Ngwira, Chigomezyo Mudala
- Date: 2009
- Subjects: Magnetic Observatory (South African Council for Scientific and Industrial Research) Geomagnetism -- Africa,Southern Computer networks -- Africa, Southern Magnetospheric currents
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5469 , http://hdl.handle.net/10962/d1005254
- Description: Geomagnetically induced currents (GICs), resulting from adverse space weather, have been demonstrated to cause damage to power transformers at mid-latitudes. There is growing concern over possible GIC effects in the Southern African network due to its long power lines. Previous efforts to model the electric field associated with GICs in the Southern Africa region used a uniform ground conductivity model. In an effort to improve the modelling of GICs, GIC data together with Hermanus Magnetic Observatory geomagnetic field data were used to obtain a multilayered ground conductivity model. This process requires a definition of the network coefficients, which are then used in subsequent calculations. This study shows that GIC computed with the new network coefficients and the multilayered ground conductivity model improves the accuracy of GIC modelling. Then GIC statistics are derived based on the recordings of the geomagnetic field at Hermanus, the new network coefficients and ground conductivity model. The geoelectric field is modelled using the plane wave method. The properties of the geomagnetic field, their time derivatives and local geomagnetic indices were investigated to determine their characteristics in relation to the GIC. The pattern of the time derivatives of the horizontal geomagnetic field closely follow the rate of change of the north-south geomagnetic component rather than the east-west component. The correlation between the GIC and the local geomagnetic field indices was also investigated. The results show that there is a higher correlation between the GIC and the east-west components of the geomagnetic local indices than between the GIC and the north-south components. This corresponds very well with the orientation of the power lines feeding the power transformers at the South African Grassridge electrical substation GIC site. Thus, the geoelectric field driving the GIC at Grassridge is north-south oriented. Further, it is shown that the geomagnetic observation sites have a strong directional preference with respect to the Grassridge GIC site.
- Full Text:
Geomorphology and dynamics of the Mfolozi River floodplain, KwaZulu-Natal, South Africa
- Grenfell, Suzanne E, Ellery, William F N, Grenfell, Michael C
- Authors: Grenfell, Suzanne E , Ellery, William F N , Grenfell, Michael C
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6633 , http://hdl.handle.net/10962/d1006827
- Description: The geomorphology and dynamics of the Mfolozi River floodplain and estuary, located in the subtropical region of northern KwaZulu-Natal, South Africa, were considered with respect to existing models of avulsion and alluvial stratigraphy. The Mfolozi River floodplain may be divided into regions based on longitudinal slope and dominant geomorphic processes. Confinement of the Mfolozi River above the floodplain has led to the development of an alluvial fan at the floodplain head, characterized by a relatively high sedimentation rate and avulsion frequency, at a gradient of 0.10%. The lower floodplain is controlled by sea level, with an average gradient of 0.05%. Between the two lies an extremely flat region with an average gradient of 0.02%, which may be controlled by faulting of the underlying bedrock. Avulsion occurrences on the Mfolozi floodplain are linked to the two main zones of aggradation, the alluvial fan at the floodplain head, and toward the river mouth in the lower floodplain. On the alluvial fan, normal flow conditions result in scour from local steepening. During infrequent, large flood events, the channel becomes overwhelmed with sediment and stream flow, and avulses. The resulting avulsion is regional, and affects the location of the channel from the floodplain head to the river mouth. Deposits resulting from such avulsions contribute significantly to the total volume of sediment stored in the floodplain, and tend to persist for long periods after the avulsion. Contrastingly, on the lower floodplain, reaching of the avulsion threshold is not necessarily linked to large flood events, but rather to long-term aggradation on the channel that decreases the existing channels gradient while increasing its elevation above the surrounding floodplain. Resultant avulsions tend to be local and do not contribute significantly to the overall volume of floodplain alluvium.
- Full Text:
- Authors: Grenfell, Suzanne E , Ellery, William F N , Grenfell, Michael C
- Date: 2009
- Language: English
- Type: Article
- Identifier: vital:6633 , http://hdl.handle.net/10962/d1006827
- Description: The geomorphology and dynamics of the Mfolozi River floodplain and estuary, located in the subtropical region of northern KwaZulu-Natal, South Africa, were considered with respect to existing models of avulsion and alluvial stratigraphy. The Mfolozi River floodplain may be divided into regions based on longitudinal slope and dominant geomorphic processes. Confinement of the Mfolozi River above the floodplain has led to the development of an alluvial fan at the floodplain head, characterized by a relatively high sedimentation rate and avulsion frequency, at a gradient of 0.10%. The lower floodplain is controlled by sea level, with an average gradient of 0.05%. Between the two lies an extremely flat region with an average gradient of 0.02%, which may be controlled by faulting of the underlying bedrock. Avulsion occurrences on the Mfolozi floodplain are linked to the two main zones of aggradation, the alluvial fan at the floodplain head, and toward the river mouth in the lower floodplain. On the alluvial fan, normal flow conditions result in scour from local steepening. During infrequent, large flood events, the channel becomes overwhelmed with sediment and stream flow, and avulses. The resulting avulsion is regional, and affects the location of the channel from the floodplain head to the river mouth. Deposits resulting from such avulsions contribute significantly to the total volume of sediment stored in the floodplain, and tend to persist for long periods after the avulsion. Contrastingly, on the lower floodplain, reaching of the avulsion threshold is not necessarily linked to large flood events, but rather to long-term aggradation on the channel that decreases the existing channels gradient while increasing its elevation above the surrounding floodplain. Resultant avulsions tend to be local and do not contribute significantly to the overall volume of floodplain alluvium.
- Full Text:
Glumlazi
- Authors: Krueger, Anton
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229829 , vital:49715 , xlink:href="https://hdl.handle.net/10520/EJC47808"
- Full Text:
- Authors: Krueger, Anton
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/229829 , vital:49715 , xlink:href="https://hdl.handle.net/10520/EJC47808"
- Full Text:
Glumlazi by pravasan pillay. published by tea room books, 2009
- Authors: Krueger, Anton
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , poem
- Identifier: http://hdl.handle.net/10962/468753 , vital:77124 , ISBN 0028-4459 , https://journals.co.za/doi/epdf/10.10520/EJC47808
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
- Authors: Krueger, Anton
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , poem
- Identifier: http://hdl.handle.net/10962/468753 , vital:77124 , ISBN 0028-4459 , https://journals.co.za/doi/epdf/10.10520/EJC47808
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
gpf: A GPU accelerated packet classification tool
- Nottingham, Alastair, Irwin, Barry V W
- Authors: Nottingham, Alastair , Irwin, Barry V W
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428103 , vital:72486 , https://d1wqtxts1xzle7.cloudfront.net/67098560/gPF_A_GPU_Accelerated_Packet_Classificat20210505-17707-zqqa4s.pdf?1620201469=andresponse-content-disposi-tion=inline%3B+filename%3DgPF_A_GPU_Accelerated_Packet_Classificat.pdfandExpires=1714733902andSignature=NQ~1DjH1XOuqF8u1Yq74XyG7kp~y0II81vu40SuWO2GQhSgToTHC7ynbAoP3MGv9do~bX1PCAp2Z2TCKUVHT7CmYNRxDmnpk5G4kefH--0VotMHVtFnHnf5Q9nhrp0MIgSxEhncOrlRx5K5sRhlLkyfDib3RS8Y8vu~FIPvm1DaZrfqCZSpXKmHh9r1etybRBRtUokzayPtgbhE41bQtW9wI8J4-JTQ9doyNC-JflFuEfUnhv5Phf45lr7TALm8G8nGZBp3z9-nSLZDxls2mvvVIANCdutyOMDnMDadGoqjIB2wYwUy~Fm424ZWj7fF89Ytj9xqIU63H4NFE2HodtQ__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: This paper outlines the design of gPF, a fast packet classifier optimised for parallel execution on current generation commodity graphics hard-ware. Specifically, gPF leverages the potential for both the parallel classi-fication of packets at runtime, and the use of evolutionary mechanisms, in the form of a GP-GPU genetic algorithm to produce contextually opti-mised filter permutations in order to reduce redundancy and improve the per-packet throughput rate of the resultant filter program. This paper demonstrates that these optimisations have significant potential for im-proving packet classification speeds, particularly with regard to bulk pack-et processing and saturated network environments.
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- Authors: Nottingham, Alastair , Irwin, Barry V W
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/428103 , vital:72486 , https://d1wqtxts1xzle7.cloudfront.net/67098560/gPF_A_GPU_Accelerated_Packet_Classificat20210505-17707-zqqa4s.pdf?1620201469=andresponse-content-disposi-tion=inline%3B+filename%3DgPF_A_GPU_Accelerated_Packet_Classificat.pdfandExpires=1714733902andSignature=NQ~1DjH1XOuqF8u1Yq74XyG7kp~y0II81vu40SuWO2GQhSgToTHC7ynbAoP3MGv9do~bX1PCAp2Z2TCKUVHT7CmYNRxDmnpk5G4kefH--0VotMHVtFnHnf5Q9nhrp0MIgSxEhncOrlRx5K5sRhlLkyfDib3RS8Y8vu~FIPvm1DaZrfqCZSpXKmHh9r1etybRBRtUokzayPtgbhE41bQtW9wI8J4-JTQ9doyNC-JflFuEfUnhv5Phf45lr7TALm8G8nGZBp3z9-nSLZDxls2mvvVIANCdutyOMDnMDadGoqjIB2wYwUy~Fm424ZWj7fF89Ytj9xqIU63H4NFE2HodtQ__andKey-Pair-Id=APKAJLOHF5GGSLRBV4ZA
- Description: This paper outlines the design of gPF, a fast packet classifier optimised for parallel execution on current generation commodity graphics hard-ware. Specifically, gPF leverages the potential for both the parallel classi-fication of packets at runtime, and the use of evolutionary mechanisms, in the form of a GP-GPU genetic algorithm to produce contextually opti-mised filter permutations in order to reduce redundancy and improve the per-packet throughput rate of the resultant filter program. This paper demonstrates that these optimisations have significant potential for im-proving packet classification speeds, particularly with regard to bulk pack-et processing and saturated network environments.
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Grade 10 life science teachers' understanding and development of critical thinking skills in selected schools in Namibia
- Authors: Avia, Ndiyakuphi
- Date: 2009
- Subjects: Education -- Namibia Life sciences -- Study and teaching (Secondary) -- Namibia Critical thinking -- Study and teaching (Secondary) -- Namibia Education -- Curricula -- Namibia Educational change -- Namibia Teachers -- Training of -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1550 , http://hdl.handle.net/10962/d1003432
- Description: The educational reform policy in Namibia adopted the principles and practice of learner-centred education, a policy based on constructivist epistemology. This approach emphasises that learners are constructors of knowledge and that they must discover information and construct their own learning. Constructivist techniques require the use of critical thinking through learners’ active involvement in the learning process. The aim is for learners to use critical thinking to identify problems, ask questions, reason, examine and solve problems in real situations and make sound decisions. This approach provides learners with activities and experiences that stimulate them to learn to think for themselves and to ask questions. Therefore, teachers need to design activities that require learners to think critically and act independently through mastering these various modes of inquiry. The purpose of this study was to explore how the selected Grade 10 Life Science teachers understand and implement critical thinking in their teaching practice. I conducted the study in two secondary schools from the Omusati region in Namibia using a case study to gain insight into the implementation of critical thinking. Three data collection instruments: interviews, document analysis and class observations were used. The reason for conducting this study was to gain a better understanding of how teachers use various strategies to foster critical thinking skills in Life Science and the challenges they experience in teaching in secondary schools. The results of the study revealed that teachers have a theoretical understanding of what critical thinking implies and the role it plays in learning. They are also aware of the strategies used to develop critical thinking skills. However, these theoretical perspectives do not reflect in their teaching in that some of the strategies that the teachers used did not bring about meaningful learning. Learners are still required to recall factual knowledge, thus active involvement of the learners is limited. The study also revealed that there are specific issues that hamper the implementation of critical thinking, which include superficial understanding of learner-centered education, teacher-tell approach, overcrowded curriculum, inexplicit syllabus, lack of good examples from the textbooks and examinations, too short lesson periods, lack of language proficiency and lack of professional development. The findings indicate that despite the theoretical understanding of the teachers in this study, their actual practice of developing critical thinking skills is problematic. The study concludes that teachers should be encouraged to design better-structured activities in order to involve learners beyond just being listeners. In light of these findings, the study recognizes a need for ongoing in-service professional development to support teachers in modelling critical thinking to their learners and to teach them to think critically. The findings of the study will serve to inform both my and my colleague’s professional practice as advisory teachers with regard to what to focus on when advising and supporting the teachers in schools.
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- Authors: Avia, Ndiyakuphi
- Date: 2009
- Subjects: Education -- Namibia Life sciences -- Study and teaching (Secondary) -- Namibia Critical thinking -- Study and teaching (Secondary) -- Namibia Education -- Curricula -- Namibia Educational change -- Namibia Teachers -- Training of -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1550 , http://hdl.handle.net/10962/d1003432
- Description: The educational reform policy in Namibia adopted the principles and practice of learner-centred education, a policy based on constructivist epistemology. This approach emphasises that learners are constructors of knowledge and that they must discover information and construct their own learning. Constructivist techniques require the use of critical thinking through learners’ active involvement in the learning process. The aim is for learners to use critical thinking to identify problems, ask questions, reason, examine and solve problems in real situations and make sound decisions. This approach provides learners with activities and experiences that stimulate them to learn to think for themselves and to ask questions. Therefore, teachers need to design activities that require learners to think critically and act independently through mastering these various modes of inquiry. The purpose of this study was to explore how the selected Grade 10 Life Science teachers understand and implement critical thinking in their teaching practice. I conducted the study in two secondary schools from the Omusati region in Namibia using a case study to gain insight into the implementation of critical thinking. Three data collection instruments: interviews, document analysis and class observations were used. The reason for conducting this study was to gain a better understanding of how teachers use various strategies to foster critical thinking skills in Life Science and the challenges they experience in teaching in secondary schools. The results of the study revealed that teachers have a theoretical understanding of what critical thinking implies and the role it plays in learning. They are also aware of the strategies used to develop critical thinking skills. However, these theoretical perspectives do not reflect in their teaching in that some of the strategies that the teachers used did not bring about meaningful learning. Learners are still required to recall factual knowledge, thus active involvement of the learners is limited. The study also revealed that there are specific issues that hamper the implementation of critical thinking, which include superficial understanding of learner-centered education, teacher-tell approach, overcrowded curriculum, inexplicit syllabus, lack of good examples from the textbooks and examinations, too short lesson periods, lack of language proficiency and lack of professional development. The findings indicate that despite the theoretical understanding of the teachers in this study, their actual practice of developing critical thinking skills is problematic. The study concludes that teachers should be encouraged to design better-structured activities in order to involve learners beyond just being listeners. In light of these findings, the study recognizes a need for ongoing in-service professional development to support teachers in modelling critical thinking to their learners and to teach them to think critically. The findings of the study will serve to inform both my and my colleague’s professional practice as advisory teachers with regard to what to focus on when advising and supporting the teachers in schools.
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Grade-appropriate literacy and South African grade seven learners' classroom writing in English
- Authors: Hendricks, Monica
- Date: 2009
- Language: English
- Type: text , article
- Identifier: vital:7019 , http://hdl.handle.net/10962/d1007173 , https://doi.org/10.1080/03004430600989593
- Description: preprint , This paper reports on the writing of grade 7 learners in English as an additional language at four differently-resourced schools in the Eastern Cape Province, South Africa. Because grade 7 is the start of the senior phase of schooling, it is vital that learners achieve grade-level competence in the language used as medium of instruction. Learning outcome five which states that ‘the learner will be able to use language to think and reason, as well as access, process and use information for learning’ (Department of Education 2002) is particularly relevant. The primary research question asked what the writing practices in grade 7 additional languages were, and how these contribute to the development of learners’ writing. The findings were that literacy practices at all four schools privilege grammar exercises and personal, expressive writing. In terms of Cummins’s (1984) constructs of BICS (Basic Interpersonal Communicative Skill) and CALP (Cognitive Academic Language Proficiency), learners’ written competencies are mainly conversational (BICS). The personal expressive texts which predominate in learners’ writing have done little to develop a formal, impersonal academic register (CALP). Learners need to become familiar with the more abstract impersonal factual genres associated with disciplinary-based knowledge.
- Full Text:
- Authors: Hendricks, Monica
- Date: 2009
- Language: English
- Type: text , article
- Identifier: vital:7019 , http://hdl.handle.net/10962/d1007173 , https://doi.org/10.1080/03004430600989593
- Description: preprint , This paper reports on the writing of grade 7 learners in English as an additional language at four differently-resourced schools in the Eastern Cape Province, South Africa. Because grade 7 is the start of the senior phase of schooling, it is vital that learners achieve grade-level competence in the language used as medium of instruction. Learning outcome five which states that ‘the learner will be able to use language to think and reason, as well as access, process and use information for learning’ (Department of Education 2002) is particularly relevant. The primary research question asked what the writing practices in grade 7 additional languages were, and how these contribute to the development of learners’ writing. The findings were that literacy practices at all four schools privilege grammar exercises and personal, expressive writing. In terms of Cummins’s (1984) constructs of BICS (Basic Interpersonal Communicative Skill) and CALP (Cognitive Academic Language Proficiency), learners’ written competencies are mainly conversational (BICS). The personal expressive texts which predominate in learners’ writing have done little to develop a formal, impersonal academic register (CALP). Learners need to become familiar with the more abstract impersonal factual genres associated with disciplinary-based knowledge.
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Graphic design, Michael MacGarry: book review
- Authors: Garman, Brian
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/454707 , vital:75368 , https://hdl.handle.net/10520/EJC139903
- Description: When I first saw that this book was out, I looked across at my bookshelf, and wondered if I didn't already have too many design books. If I was going to get this one, it needed to be something different.
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- Authors: Garman, Brian
- Date: 2009
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/454707 , vital:75368 , https://hdl.handle.net/10520/EJC139903
- Description: When I first saw that this book was out, I looked across at my bookshelf, and wondered if I didn't already have too many design books. If I was going to get this one, it needed to be something different.
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Growing of trees in home-gardens by rural households in the Eastern Cape and Limpopo Provinces, South Africa:
- Shackleton, Charlie M, Paumgarten, Fiona, Cocks, Michelle L
- Authors: Shackleton, Charlie M , Paumgarten, Fiona , Cocks, Michelle L
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141360 , vital:37965 , DOI: 10.1080/13504500509469647
- Description: Trees provide a wide range of goods and services to rural households which, when incorporated into their livelihood strategies, help reduce their vulnerability to adversity. Governments and policy makers often ignore the contribution made by trees and consequently resources are focussed on cash crops and livestock. Villagers in the Eastern Cape and Limpopo Province, South Africa utilise a range of trees from home-gardens for various purposes, although predominantly for fruit and shade. Trees are either planted or actively retained in households' home-gardens. There were noticeable differences between the villages in the Eastern Cape and those in Limpopo Province, particularly with respect to the overall density of trees per hectare and the number of species per household, both being significantly greater in Limpopo Province. The five most preferred species were listed for each village, revealing a preference for exotic fruit trees in Limpopo Province and a mix of exotic fruit trees and shade trees in the Eastern Cape. Households also retained useful indigenous species, predominantly fruit-bearing species. A range of factors constrain tree growing in home-gardens and households engage in practices to grow and maintain their trees. Not all of these constraints and practices were significantly different between the various localities.
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- Authors: Shackleton, Charlie M , Paumgarten, Fiona , Cocks, Michelle L
- Date: 2009
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/141360 , vital:37965 , DOI: 10.1080/13504500509469647
- Description: Trees provide a wide range of goods and services to rural households which, when incorporated into their livelihood strategies, help reduce their vulnerability to adversity. Governments and policy makers often ignore the contribution made by trees and consequently resources are focussed on cash crops and livestock. Villagers in the Eastern Cape and Limpopo Province, South Africa utilise a range of trees from home-gardens for various purposes, although predominantly for fruit and shade. Trees are either planted or actively retained in households' home-gardens. There were noticeable differences between the villages in the Eastern Cape and those in Limpopo Province, particularly with respect to the overall density of trees per hectare and the number of species per household, both being significantly greater in Limpopo Province. The five most preferred species were listed for each village, revealing a preference for exotic fruit trees in Limpopo Province and a mix of exotic fruit trees and shade trees in the Eastern Cape. Households also retained useful indigenous species, predominantly fruit-bearing species. A range of factors constrain tree growing in home-gardens and households engage in practices to grow and maintain their trees. Not all of these constraints and practices were significantly different between the various localities.
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Hard choices ahead
- Authors: Pithouse, Richard, 1970-
- Date: 2009
- Language: English
- Type: text , article
- Identifier: vital:6204 , http://hdl.handle.net/10962/d1008573 , http://sacsis.org.za/site/article/334.1
- Description: preprint , From Introduction: In recent weeks people have been willing to risk arrest, violence and in some cases death at the hands of our habitually brutal police force to assert a whole range of demands. These demands have included an insistence on the right to the cities, the right to an income, the right to a decent education and the right to a living wage.
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- Authors: Pithouse, Richard, 1970-
- Date: 2009
- Language: English
- Type: text , article
- Identifier: vital:6204 , http://hdl.handle.net/10962/d1008573 , http://sacsis.org.za/site/article/334.1
- Description: preprint , From Introduction: In recent weeks people have been willing to risk arrest, violence and in some cases death at the hands of our habitually brutal police force to assert a whole range of demands. These demands have included an insistence on the right to the cities, the right to an income, the right to a decent education and the right to a living wage.
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Harmful scripts : raunch femininity as the disguised reiteration of emphasized feminine goals : an exploration of young women's accounts of sexually explicit forms of public expression
- Authors: Thorpe, Jennifer
- Date: 2009 , 2013-07-12
- Subjects: Femininity Women -- Sexual behavior Feminine beauty (Aesthetics) Women's rights Human body -- Political aspects Stereotypes (Social psychology)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2840 , http://hdl.handle.net/10962/d1004521
- Description: Women are subject to a number of societal recommendations about what it means to be an 'ideal' woman. These recommendations take the form of social scripts, constructing an idea of ideal femininity, which women must perform in order to be socially accepted and successful. 'Emphasized femininity', a white, Western, script of femininity is dominant and has been critiqued by feminists, social theorists, and individual women for the limits that it places on women's behaviour. As a result a number of alternative scripts of femininity have arisen. These scripts can provide alternatives to restrictive understandings of female sexuality and beauty - they can serve to challenge 'appropriate' feminine behaviour and hence allow women to live more freely. Raunch femininity is a contemporary alternative that uses sexually explicit public performance, and encourages specific body and dress norms, in an attempt to challenge the norms of emphasized femininity. This thesis looks at raunch femininity, specifically its norms of sexuality and beauty, in the hopes of understanding what the effects of such a script are on women's behaviour. Theoretical understandings and explanations of women's lives are often contradicted by reports that women provide of their lived experiences. For this reason, this thesis investigates the lived experiences of women who self-identify as subscribers to this script in order to assess to what extent superficial expressions of freedom have deeper effects on women's freedom. The tension between theory and empirical reports is evident. However, in many cases, the reports of research participants reveal that the script of raunch femininity, like other scripts of feminine behaviour, has its own limits that women must abide with in order to be accepted. This thesis argues that these limits outweigh the benefits of this script. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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- Authors: Thorpe, Jennifer
- Date: 2009 , 2013-07-12
- Subjects: Femininity Women -- Sexual behavior Feminine beauty (Aesthetics) Women's rights Human body -- Political aspects Stereotypes (Social psychology)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2840 , http://hdl.handle.net/10962/d1004521
- Description: Women are subject to a number of societal recommendations about what it means to be an 'ideal' woman. These recommendations take the form of social scripts, constructing an idea of ideal femininity, which women must perform in order to be socially accepted and successful. 'Emphasized femininity', a white, Western, script of femininity is dominant and has been critiqued by feminists, social theorists, and individual women for the limits that it places on women's behaviour. As a result a number of alternative scripts of femininity have arisen. These scripts can provide alternatives to restrictive understandings of female sexuality and beauty - they can serve to challenge 'appropriate' feminine behaviour and hence allow women to live more freely. Raunch femininity is a contemporary alternative that uses sexually explicit public performance, and encourages specific body and dress norms, in an attempt to challenge the norms of emphasized femininity. This thesis looks at raunch femininity, specifically its norms of sexuality and beauty, in the hopes of understanding what the effects of such a script are on women's behaviour. Theoretical understandings and explanations of women's lives are often contradicted by reports that women provide of their lived experiences. For this reason, this thesis investigates the lived experiences of women who self-identify as subscribers to this script in order to assess to what extent superficial expressions of freedom have deeper effects on women's freedom. The tension between theory and empirical reports is evident. However, in many cases, the reports of research participants reveal that the script of raunch femininity, like other scripts of feminine behaviour, has its own limits that women must abide with in order to be accepted. This thesis argues that these limits outweigh the benefits of this script. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
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