A content analysis of psychology Masters theses from South African universities
- Authors: Robson, Brian
- Date: 2019
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/113924 , vital:33845
- Description: Expected release date-April 2022
- Full Text: false
- Authors: Robson, Brian
- Date: 2019
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/113924 , vital:33845
- Description: Expected release date-April 2022
- Full Text: false
A contribution to a generic revision of Simochromis and Tropheus (Pisces : Cichlidae) - from Lake Tanganyika, with special reference to the Pharyngeal Apophysis and its taxonomic importance
- Authors: Axelrod, Glen S
- Date: 1978
- Subjects: Cichlids -- Tanganyika, Lake
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5349 , http://hdl.handle.net/10962/d1007510 , Cichlids -- Tanganyika, Lake
- Description: The purpose of this thesis is to investigate the taxonomic status of Simochromis and Tropheue. Material for the study wae collected during three visits to Lake Tanganyika in 1976-1977. Tropheus polli G. S . Axelrod 1977, was found and described, and a new species of Simochromis was found and will be described in a forthcoming paper. Nine colour varieties of Tropheus maorii and three colour varieties of Tropheus duboisi were found and described. A diagnosis and description, with colour photographs, is given using morphometries and meristics of the five species of Simochromis and four species of Tropheus. A dissection and cleaning technique tor the pharyngeal apophysis and lower pharyngeal bone is explained, together with a method for the interpretation of relative bone composition of the pharyngeal apophysis. Photographs are included. The dentition is examined, evaluated and figured. Doubt has been cast upon the taxonomic validity of the composition of the pharyngeal apophysis as an indicator of affinity at the sub familial level. This is shown by its seeming lack of functional relationship, apparent arbitrary variation, interspecific variability in Simochromis and Tropheus, and intraspecific variability in S. diagramma and T. duboisi. Thus, the apophysis cannot be considered a reliable cichlid taxonomic characteristic at any level of classification, unless its validity is Substantiated in each instance. Furthermore, it is considered very probable that the Tropheus-Simochromis species complex is a monophyletic assemblage at the genus level, on the basis of similar dentition and mouth form, which is unique in Lake Tanganyika. It is proposed on phyletic grounds that Simochromis and Tropheus be united into the one genus Tropheus, and that Tropheus be divided into the subgenera , Tropheus (Tropheus) and Tropheus (Simochromis), along the lines of its previous division in two separate genera. Characteristics supporting this division include differences in the anal and dorsal fin meristic counts noted in the original descriptions of the genera. In addition, two modifications of the dentition were found during the course of this study which are not mentioned in any previous literature. It is considered probable, that Tropheus (Tropheus) and Tropheus (Simochromis) are monophyletic sister groups within the Tropheus complex. Pseudosimochromis Nelissen 1977 is not considered to be a taxonomically valid genus on either phyletic or gradistic grounds, and is included within Tropheus (Simochromis). The lower pharyngeal bone of T . (S.) diagramma is considered to be plesiomorphic in tooth arrangement, size and shape. A preliminary worKing hypothesis is established on the basis of the conjectures made and other available information which supports the phyletic relationship suggested by Fryer and lIes (1972). An illustration is given.
- Full Text:
- Authors: Axelrod, Glen S
- Date: 1978
- Subjects: Cichlids -- Tanganyika, Lake
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5349 , http://hdl.handle.net/10962/d1007510 , Cichlids -- Tanganyika, Lake
- Description: The purpose of this thesis is to investigate the taxonomic status of Simochromis and Tropheue. Material for the study wae collected during three visits to Lake Tanganyika in 1976-1977. Tropheus polli G. S . Axelrod 1977, was found and described, and a new species of Simochromis was found and will be described in a forthcoming paper. Nine colour varieties of Tropheus maorii and three colour varieties of Tropheus duboisi were found and described. A diagnosis and description, with colour photographs, is given using morphometries and meristics of the five species of Simochromis and four species of Tropheus. A dissection and cleaning technique tor the pharyngeal apophysis and lower pharyngeal bone is explained, together with a method for the interpretation of relative bone composition of the pharyngeal apophysis. Photographs are included. The dentition is examined, evaluated and figured. Doubt has been cast upon the taxonomic validity of the composition of the pharyngeal apophysis as an indicator of affinity at the sub familial level. This is shown by its seeming lack of functional relationship, apparent arbitrary variation, interspecific variability in Simochromis and Tropheus, and intraspecific variability in S. diagramma and T. duboisi. Thus, the apophysis cannot be considered a reliable cichlid taxonomic characteristic at any level of classification, unless its validity is Substantiated in each instance. Furthermore, it is considered very probable that the Tropheus-Simochromis species complex is a monophyletic assemblage at the genus level, on the basis of similar dentition and mouth form, which is unique in Lake Tanganyika. It is proposed on phyletic grounds that Simochromis and Tropheus be united into the one genus Tropheus, and that Tropheus be divided into the subgenera , Tropheus (Tropheus) and Tropheus (Simochromis), along the lines of its previous division in two separate genera. Characteristics supporting this division include differences in the anal and dorsal fin meristic counts noted in the original descriptions of the genera. In addition, two modifications of the dentition were found during the course of this study which are not mentioned in any previous literature. It is considered probable, that Tropheus (Tropheus) and Tropheus (Simochromis) are monophyletic sister groups within the Tropheus complex. Pseudosimochromis Nelissen 1977 is not considered to be a taxonomically valid genus on either phyletic or gradistic grounds, and is included within Tropheus (Simochromis). The lower pharyngeal bone of T . (S.) diagramma is considered to be plesiomorphic in tooth arrangement, size and shape. A preliminary worKing hypothesis is established on the basis of the conjectures made and other available information which supports the phyletic relationship suggested by Fryer and lIes (1972). An illustration is given.
- Full Text:
A contribution to cabbage pest management by subsistence and small-scale farmers in the Eastern Cape, South Africa
- Authors: Mkize, Nolwazi
- Date: 2004
- Subjects: Cabbage -- Diseases and pests , Insect pests -- Integrated control -- South Africa -- Eastern Cape , Farms, Small -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5659 , http://hdl.handle.net/10962/d1005342 , Cabbage -- Diseases and pests , Insect pests -- Integrated control -- South Africa -- Eastern Cape , Farms, Small -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Description: The interaction between farmers, agricultural scientists and extension workers is sometimes overlooked in agricultural entomology. In an attempt to respond to this reality this study examines some foundation of this interaction in relation to the pest management practices of subsistence and small-scale farmers and also highlights the problems that might arise in the implementation of IPM. Problems involving pests occurrence; language barriers; beliefs, knowledge and perception about insects, and visual literacy are examined. The thesis has a two-fold focus, firstly the study of pests on cabbages of subsistence farmers in Grahamstown and secondly a broader focus on other aspects such as cultural entomology, perception of insects and visual literacy specifically in relation to Xhosa speaking people in the Eastern Cape. The most important crop for emergent farmers in the Eastern Cape are cabbages, which have a variety of pests of which diamondback moths and are the most important. Traditional pest management practices tend to influence the development of IPM programmes adopted by these farmers. Eastern Cape farmers apply periodic cropping systems, which had an effect on the population densities of diamondback moth (DBM), other lepidopteran pests and their parasitoids. Considering the maximum population densities of DBM, which were 0.2 - 2.9 larvae/plant, there were no major pest problems. The availability of parasitoids, even in highly disturbed and patchy environments, showed good potential for biological control. Since some extension officers cannot speak the local farmers’ language, a dictionary of insect names was formulated in their language (isiXhosa) to assist communication. Response-frequency distribution analysis showed that the dictionary is essentially complete. The literal translations of some names show that isiXhosa speakers often relate insects to people, or to their habitat or classify them according to their behaviour. Farmers from eight sites in the Eastern Cape were interviewed regarding their knowledge and perception of insect pests and their control thereof. To some extent, farmers still rely on cultural control and have beliefs about insects that reflected both reality and superstition. There is no difference between the Ciskei and Transkei regions regarding insect-related beliefs. Farmers generally lack an understanding of insect ecology. There is a need for farmers to be taught about insects to assist with the implementation of IPM. Leftover pesticides from commercial farms or detergents are sometimes used to manage the pests. When training illiterate or semi-literate farmers, it is important to understand their media literacy so as to design useful graphic and object training media. Generally farmers showed that they either understand graphic or object media depending on the features of the insects being looked at. These findings are discussed with regard to the potential development of IPM training material for subsistence and small-scale farmers in a community.
- Full Text:
- Authors: Mkize, Nolwazi
- Date: 2004
- Subjects: Cabbage -- Diseases and pests , Insect pests -- Integrated control -- South Africa -- Eastern Cape , Farms, Small -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5659 , http://hdl.handle.net/10962/d1005342 , Cabbage -- Diseases and pests , Insect pests -- Integrated control -- South Africa -- Eastern Cape , Farms, Small -- South Africa -- Eastern Cape , Agriculture -- South Africa -- Eastern Cape
- Description: The interaction between farmers, agricultural scientists and extension workers is sometimes overlooked in agricultural entomology. In an attempt to respond to this reality this study examines some foundation of this interaction in relation to the pest management practices of subsistence and small-scale farmers and also highlights the problems that might arise in the implementation of IPM. Problems involving pests occurrence; language barriers; beliefs, knowledge and perception about insects, and visual literacy are examined. The thesis has a two-fold focus, firstly the study of pests on cabbages of subsistence farmers in Grahamstown and secondly a broader focus on other aspects such as cultural entomology, perception of insects and visual literacy specifically in relation to Xhosa speaking people in the Eastern Cape. The most important crop for emergent farmers in the Eastern Cape are cabbages, which have a variety of pests of which diamondback moths and are the most important. Traditional pest management practices tend to influence the development of IPM programmes adopted by these farmers. Eastern Cape farmers apply periodic cropping systems, which had an effect on the population densities of diamondback moth (DBM), other lepidopteran pests and their parasitoids. Considering the maximum population densities of DBM, which were 0.2 - 2.9 larvae/plant, there were no major pest problems. The availability of parasitoids, even in highly disturbed and patchy environments, showed good potential for biological control. Since some extension officers cannot speak the local farmers’ language, a dictionary of insect names was formulated in their language (isiXhosa) to assist communication. Response-frequency distribution analysis showed that the dictionary is essentially complete. The literal translations of some names show that isiXhosa speakers often relate insects to people, or to their habitat or classify them according to their behaviour. Farmers from eight sites in the Eastern Cape were interviewed regarding their knowledge and perception of insect pests and their control thereof. To some extent, farmers still rely on cultural control and have beliefs about insects that reflected both reality and superstition. There is no difference between the Ciskei and Transkei regions regarding insect-related beliefs. Farmers generally lack an understanding of insect ecology. There is a need for farmers to be taught about insects to assist with the implementation of IPM. Leftover pesticides from commercial farms or detergents are sometimes used to manage the pests. When training illiterate or semi-literate farmers, it is important to understand their media literacy so as to design useful graphic and object training media. Generally farmers showed that they either understand graphic or object media depending on the features of the insects being looked at. These findings are discussed with regard to the potential development of IPM training material for subsistence and small-scale farmers in a community.
- Full Text:
A contribution to the biology of Tilapia mossambica Peters in Lake Sibaya, South Africa
- Authors: Bruton, Michael N
- Date: 1973
- Subjects: Cichlids , Tilapia , Mozambique tilapia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5839 , http://hdl.handle.net/10962/d1009950 , Cichlids , Tilapia , Mozambique tilapia
- Description: An account is given of some aspects of the biology of Tilapia mossambica Peters in Lake Sibaya, South Africa. Previous work on Tilapia in Lake Sibaya is reviewed. Apart from brief gillnet surveys, which recorded the species' presence, no research on T. mossambica had been performed at Lake Sibaya before the two-year study of Minshull who collected data on food preferences, depth distribution of juveniles and breeding biology of adults. The main physiographical features of the lake are outlined. Lake Sibaya is a warm shallow coastal lake with extensive shallow terraces in the littoral which shelve abruptly into underwater valleys. The substrate is predominantly sandy. Aquatic macrophytes are generally restricted to water 1-7 m deep. Adult fishes (over 8 cm SL) are usually absent from water deeper than 12 m and shallower than 0.5 m, whereas juveniles may occur at all depths, and fry only in very shallow water. T. mossambica inhabits the littoral in the warm and transition periods (August to April) but moves into deep water in the cool season (May to July). Exposed and sheltered shallow areas are utilised for different purposes by adult fishes, the former for nesting, and the latter for feeding and mouth-brooding. Habitat selection by males was governed by nest site selection. Habitat Nests were most common in sheltered, sparsely vegetated littoral and sublittoral areas, but also present in well-vegetated sheltered areas. Breeding females preferred sheltered littoral areas but ventured onto the terrace to release the young. Juvenile and fry T. mossambica inhabited shallow exposed shores with a temperature gradient which reversed diurnally. The breeding, shoaling and feeding behaviour of T. mossambica is described, and integrated with data on T. mossambica from other systems. The breeding season spans seven months. Shoaling takes place in shallow water probably as a means of protection. T. mossambica is an omnivorous feeder relying largely on diatoms. The main predator is probably the barbel Clarias gariepinus, but avian predators may be more important. A method whereby the time of formation of rings on the scales of T. mossambica is described. The fishes were found to reach maturity after one year at a length of about 8 cm in females, and after two years at 10 cm in males. The breeding population had a standard length mode of 14 cm (females) and 17 cm (males). The maximum final size was about 24 cm SL. An estimate of the standing crop for fishes in the littoral and subiittoral areas of the eastern and southern shores of the south basin is given. The data were derived from a mark and recapture The biology of T. mossambica in Lake Sibaya as revealed by the present study is discussed with reference to data on the same and similar species in other systems. The utilis ation of the available resources in the lake by T. mossambica is commented upon, and reference is made to the significance of stunting, and the import ance of the retention of generalised characters for the successful habitation of the cyclically-renewed habitat of the littoral. Precocious breeding in T. mossambica is regarded as a functional adaptation which increases the proportion of fishes small enough to utilise the rich food resources in shallow water.
- Full Text:
- Authors: Bruton, Michael N
- Date: 1973
- Subjects: Cichlids , Tilapia , Mozambique tilapia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5839 , http://hdl.handle.net/10962/d1009950 , Cichlids , Tilapia , Mozambique tilapia
- Description: An account is given of some aspects of the biology of Tilapia mossambica Peters in Lake Sibaya, South Africa. Previous work on Tilapia in Lake Sibaya is reviewed. Apart from brief gillnet surveys, which recorded the species' presence, no research on T. mossambica had been performed at Lake Sibaya before the two-year study of Minshull who collected data on food preferences, depth distribution of juveniles and breeding biology of adults. The main physiographical features of the lake are outlined. Lake Sibaya is a warm shallow coastal lake with extensive shallow terraces in the littoral which shelve abruptly into underwater valleys. The substrate is predominantly sandy. Aquatic macrophytes are generally restricted to water 1-7 m deep. Adult fishes (over 8 cm SL) are usually absent from water deeper than 12 m and shallower than 0.5 m, whereas juveniles may occur at all depths, and fry only in very shallow water. T. mossambica inhabits the littoral in the warm and transition periods (August to April) but moves into deep water in the cool season (May to July). Exposed and sheltered shallow areas are utilised for different purposes by adult fishes, the former for nesting, and the latter for feeding and mouth-brooding. Habitat selection by males was governed by nest site selection. Habitat Nests were most common in sheltered, sparsely vegetated littoral and sublittoral areas, but also present in well-vegetated sheltered areas. Breeding females preferred sheltered littoral areas but ventured onto the terrace to release the young. Juvenile and fry T. mossambica inhabited shallow exposed shores with a temperature gradient which reversed diurnally. The breeding, shoaling and feeding behaviour of T. mossambica is described, and integrated with data on T. mossambica from other systems. The breeding season spans seven months. Shoaling takes place in shallow water probably as a means of protection. T. mossambica is an omnivorous feeder relying largely on diatoms. The main predator is probably the barbel Clarias gariepinus, but avian predators may be more important. A method whereby the time of formation of rings on the scales of T. mossambica is described. The fishes were found to reach maturity after one year at a length of about 8 cm in females, and after two years at 10 cm in males. The breeding population had a standard length mode of 14 cm (females) and 17 cm (males). The maximum final size was about 24 cm SL. An estimate of the standing crop for fishes in the littoral and subiittoral areas of the eastern and southern shores of the south basin is given. The data were derived from a mark and recapture The biology of T. mossambica in Lake Sibaya as revealed by the present study is discussed with reference to data on the same and similar species in other systems. The utilis ation of the available resources in the lake by T. mossambica is commented upon, and reference is made to the significance of stunting, and the import ance of the retention of generalised characters for the successful habitation of the cyclically-renewed habitat of the littoral. Precocious breeding in T. mossambica is regarded as a functional adaptation which increases the proportion of fishes small enough to utilise the rich food resources in shallow water.
- Full Text:
A contribution to the ecology and systematics of the genus Petrotilapia (Pisces : Cichlidae) in Lake Malawi
- Authors: Marsh, Alan Clive
- Date: 2013-03-20
- Subjects: Cichlids -- Nyasa, Lake , Petrotilapia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5355 , http://hdl.handle.net/10962/d1009513 , Cichlids -- Nyasa, Lake , Petrotilapia
- Description: The nominal species Petrotilapia tridentiger Trewavas, a rock-frequenting fish from Lake Malawi, occurs in three distinct male and female colour forms at Monkey Bay. Field observations on courtship and aggression indicate that the three colour forms are distinct species. The taxonomy of the three species of Petrotilapia that occur at Monkey Bay is revised. R. tridentiger is redescribed and two new species, P. genalutea and P. nigra, are described. The three species are very similar morphologically and are considered to be sibling species. The only morphological character which reliably separates the three sibling species is live coloration: Live coloration is considered to be an important component of the specific mate recognition systems in Petrotilapia species. The coloration of a further fourteen forms of Petrotilapia is described and it is suggested that these forms are valid species. Space resource partitioning plays an important role in facilitating the coexistence of Petrotilapia sibling species. Space is partially partitioned in terms of depth range. In shallow water, where all three species are sympatric, there are differences in the feeding sites used by the various Petrotilapia forms. Changes in niche breadth and overlap, which are associated with changes in the abundance of epilithic algae, indicate that competition for feeding space occurs between the three Petrotilapia species. The Petrotilapia species partition their resources according to a social dominance hierarchy. Dominant forms, such as territorial males, R. tridentiger females and schooling R. genalutea females, have access to rich food supplies which occur within the territories of certain highly aggressive Pseudotronheus species. are facultative and opportunistic .feeders. Petrotilapia species Speciation in allopatry is considered to be the mechanism which adequately explains the current diversity of the genus Petrotilapia. The importance of an integrative approach to future systematic and ecological research on Lake Malawi cichlids is stressed. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
- Full Text:
- Authors: Marsh, Alan Clive
- Date: 2013-03-20
- Subjects: Cichlids -- Nyasa, Lake , Petrotilapia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5355 , http://hdl.handle.net/10962/d1009513 , Cichlids -- Nyasa, Lake , Petrotilapia
- Description: The nominal species Petrotilapia tridentiger Trewavas, a rock-frequenting fish from Lake Malawi, occurs in three distinct male and female colour forms at Monkey Bay. Field observations on courtship and aggression indicate that the three colour forms are distinct species. The taxonomy of the three species of Petrotilapia that occur at Monkey Bay is revised. R. tridentiger is redescribed and two new species, P. genalutea and P. nigra, are described. The three species are very similar morphologically and are considered to be sibling species. The only morphological character which reliably separates the three sibling species is live coloration: Live coloration is considered to be an important component of the specific mate recognition systems in Petrotilapia species. The coloration of a further fourteen forms of Petrotilapia is described and it is suggested that these forms are valid species. Space resource partitioning plays an important role in facilitating the coexistence of Petrotilapia sibling species. Space is partially partitioned in terms of depth range. In shallow water, where all three species are sympatric, there are differences in the feeding sites used by the various Petrotilapia forms. Changes in niche breadth and overlap, which are associated with changes in the abundance of epilithic algae, indicate that competition for feeding space occurs between the three Petrotilapia species. The Petrotilapia species partition their resources according to a social dominance hierarchy. Dominant forms, such as territorial males, R. tridentiger females and schooling R. genalutea females, have access to rich food supplies which occur within the territories of certain highly aggressive Pseudotronheus species. are facultative and opportunistic .feeders. Petrotilapia species Speciation in allopatry is considered to be the mechanism which adequately explains the current diversity of the genus Petrotilapia. The importance of an integrative approach to future systematic and ecological research on Lake Malawi cichlids is stressed. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
- Full Text:
A contribution to the oceanology of the Prince Edward Islands
- Authors: Parker, Llewellyn Derek
- Date: 1985
- Subjects: Oceanography -- Prince Edward Islands
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5605 , http://hdl.handle.net/10962/d1002055
- Description: While the terrestrial ecosystem of the Prince Edward Island Group has been subject to intensive research, the marine ecosystem has to a large extent been neglected. This together with the possible existence of an "island effect" at these islands, as was first proposed after the visit to these islands of the French vessel Marion Dufresne, led to the initiation of a programme to determine the distribution of standing stocks and the productivity of phytoplankton and zooplankton in the neritic seas of these islands. To do this and before a detailed biological survey could be attempted, it was first necessary to define the physical and chemical properties of the circuminsular waters. This dissertation discusses the results of several surveys to these islands in the light of a possible "island effect" and comments upon processes likely to influence such an effect
- Full Text:
- Authors: Parker, Llewellyn Derek
- Date: 1985
- Subjects: Oceanography -- Prince Edward Islands
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5605 , http://hdl.handle.net/10962/d1002055
- Description: While the terrestrial ecosystem of the Prince Edward Island Group has been subject to intensive research, the marine ecosystem has to a large extent been neglected. This together with the possible existence of an "island effect" at these islands, as was first proposed after the visit to these islands of the French vessel Marion Dufresne, led to the initiation of a programme to determine the distribution of standing stocks and the productivity of phytoplankton and zooplankton in the neritic seas of these islands. To do this and before a detailed biological survey could be attempted, it was first necessary to define the physical and chemical properties of the circuminsular waters. This dissertation discusses the results of several surveys to these islands in the light of a possible "island effect" and comments upon processes likely to influence such an effect
- Full Text:
A contribution to the petrology of kimberlites
- Authors: Kruger, Floris Johan
- Date: 1978 , 2013-10-17
- Subjects: Kimberlite -- Africa, Southern , Petrology , Igneous rocks -- Inclusions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5024 , http://hdl.handle.net/10962/d1006886 , Kimberlite -- Africa, Southern , Petrology , Igneous rocks -- Inclusions
- Description: The petrogenetic relationships of the different varieties of kimberlite in the De Beers Mine and Letseng-Ia-terai composite diatremes have been investigated using petrographic and chemical methods. Kimberlites in the Letseng-Ia-terai diatreme were found to be strongly contaminated by crustal material, mainly basalt. A method to correct for the effects of the contamination has been developed and applied to these kimberlites. Using the corrected data, the four kimberlite types in each group appear to be related to each other by crystal/liquid fractionation models. However the two groups cannot be related to each other. The De Beer Mine has two varieties of kimberlite, a monticellite apatite and calcite rich variety which intruded first, and a phlogopite rich type forming a discrete cylindrical body within the earlier kimberlite. These two kimberlites do not appear to be related by any of the fractionation models discussed. An examination of the data from this work and published sources, suggests that kimberlites are derived from below the low velocity zone by small degrees of partial melting involving garnet lherzolite with subordinate phlogopite and carbonate. Diamonds are probably incorporated as xenocrysts in the magma. Upward movement and emplacement of kimberlite appears to have been very rapid. The diatremes were probably eroded and shaped by gas, derived from the kimberlite magma, escaping to surface along weak zones in the earth's crust. Xenoliths of crustal material incorporated in the kimberlite on intrusion have also been studied and various features due to alteration by the magma are described, including the formation of natrolite and cebollite. The latter is a rare mineral that has not been described from kimberlite before. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Authors: Kruger, Floris Johan
- Date: 1978 , 2013-10-17
- Subjects: Kimberlite -- Africa, Southern , Petrology , Igneous rocks -- Inclusions
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5024 , http://hdl.handle.net/10962/d1006886 , Kimberlite -- Africa, Southern , Petrology , Igneous rocks -- Inclusions
- Description: The petrogenetic relationships of the different varieties of kimberlite in the De Beers Mine and Letseng-Ia-terai composite diatremes have been investigated using petrographic and chemical methods. Kimberlites in the Letseng-Ia-terai diatreme were found to be strongly contaminated by crustal material, mainly basalt. A method to correct for the effects of the contamination has been developed and applied to these kimberlites. Using the corrected data, the four kimberlite types in each group appear to be related to each other by crystal/liquid fractionation models. However the two groups cannot be related to each other. The De Beer Mine has two varieties of kimberlite, a monticellite apatite and calcite rich variety which intruded first, and a phlogopite rich type forming a discrete cylindrical body within the earlier kimberlite. These two kimberlites do not appear to be related by any of the fractionation models discussed. An examination of the data from this work and published sources, suggests that kimberlites are derived from below the low velocity zone by small degrees of partial melting involving garnet lherzolite with subordinate phlogopite and carbonate. Diamonds are probably incorporated as xenocrysts in the magma. Upward movement and emplacement of kimberlite appears to have been very rapid. The diatremes were probably eroded and shaped by gas, derived from the kimberlite magma, escaping to surface along weak zones in the earth's crust. Xenoliths of crustal material incorporated in the kimberlite on intrusion have also been studied and various features due to alteration by the magma are described, including the formation of natrolite and cebollite. The latter is a rare mineral that has not been described from kimberlite before. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
A contribution to the respiratory physiology of three South African freshwater pulmonate snails, Bulinus (Physopsis) Africanus (Krauss), Bulinus (Bulinus) Tropicus (Krauss), and Lymnaea Natalensis Krauss
- Authors: Alberts, I E
- Date: 1966
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:20965 , http://hdl.handle.net/10962/5696
- Description: From Introduction: The use of chemical molluscicides in the control of schistosome transmitting snails has been largely based on empirical studies of toxicity, rather than on a clear understanding of basic physiology and biochemistry of snail hosts. It is therefore possible that purely physiological studies may in themselves provide information which could be of value in the development of more effective mollucicides. In this investigation an attempt has been made to understand some aspects of the respiratory physiology of three species of fresh-water pulmonate snails, all of which are of medical and veterinary importance in the Republic of South Africa. Bulinus (Physopsis) africanus (Krauss) is the intermediate host of Schistosoma haematobium, the causative organism of human schistosomiasis (Bilharziasis). Bulinus (Bulinus) tropicus (Krauss) is the intermediate host of the conical flukes Calicophoron calicophorum and Paramphistomum microbothrium and of the liver fluke Fasciola hepatica, while Lymnaea natalensis Krauss is the intermediate host of the liver fluke Fasciola gigantica.
- Full Text:
- Authors: Alberts, I E
- Date: 1966
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:20965 , http://hdl.handle.net/10962/5696
- Description: From Introduction: The use of chemical molluscicides in the control of schistosome transmitting snails has been largely based on empirical studies of toxicity, rather than on a clear understanding of basic physiology and biochemistry of snail hosts. It is therefore possible that purely physiological studies may in themselves provide information which could be of value in the development of more effective mollucicides. In this investigation an attempt has been made to understand some aspects of the respiratory physiology of three species of fresh-water pulmonate snails, all of which are of medical and veterinary importance in the Republic of South Africa. Bulinus (Physopsis) africanus (Krauss) is the intermediate host of Schistosoma haematobium, the causative organism of human schistosomiasis (Bilharziasis). Bulinus (Bulinus) tropicus (Krauss) is the intermediate host of the conical flukes Calicophoron calicophorum and Paramphistomum microbothrium and of the liver fluke Fasciola hepatica, while Lymnaea natalensis Krauss is the intermediate host of the liver fluke Fasciola gigantica.
- Full Text:
A contribution towards an understanding of the intensive tank culture of an ornamental Cichlid, Aulonocara Baenschi, from Chipoka, Lake Malawi
- Authors: Impson, N D (Neville Dean)
- Date: 1988
- Subjects: Cichlids -- Nysas, Lake , Cichlids -- Nyasa, Lake -- Physiology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5208 , http://hdl.handle.net/10962/d1004596 , Cichlids -- Nysas, Lake , Cichlids -- Nyasa, Lake -- Physiology
- Description: The intensive tank culture of ornamental mouthbrooding cichlids poses several problems which limit their aquaculture potential. This project addressed some of these problems for Aulonocara baenschi. The production of juveniles in 2501 aquaria was accelerated when: a) aquaria were equipped with refuges, b) females of less than 70mm in standard length were used as broodstock, c) mouthbrooding females were replaced with gravid females at seven day intervals, and d) embryos were removed from the mouths of females at replacement times for artificial incubation. Two sex ratios also accelerated juvenile production. The sex ratio (male:females) 1:30 yielded the highest spawning returns per tank, and therefore represented the most effective utilization of aquarium space (a critical consideration for the small-scale culturist). Contrastingly, the sex ratio 1:12 yielded the highest clutch sizes and a high percentage female spawning return, and therefore represented the most effective utilization of broodstock (an important consideration for culturists inhibited by financial constraints or having an abundance of culture vessels). The reproductive behaviour of A. baenschi was described. Emphasis was given to aspects of reproduction of relevance to culture, for example; spawning times and seasons, clutch size and its relationship with female size, age and size of sexes at first spawning, embryo development rate and size of first swimming juveniles. The slow growth rate of juveniles, combined with a late attainment of marketable size (± seven months) was a major limitation affecting the cuIture potential of A. baenschi. Two factors favouring the cuIture of this species was the high survival rate recorded for both adults and juveniles, and the comparatively high prices fetched by fish on domestic wholesale markets (R4,00 per fish). It is recommended that A. baenschi should not be cultured exclusively for the relatively small South African ornamental fish market. A more profitable strategy for domestic culturists should involve a major production effort with A. baenschi and other desirable species of Aulonocara (e.g . A. ethelwynnae; A. hansbaenschi; A. stuartgranti & A. maylandi) for foreign markets (in particular, the U.S.A.; Western Europe & Japan). Not only are these markets massive, but prevailing exchange rates of the Rand with these currencies favour such a strategy.
- Full Text:
- Authors: Impson, N D (Neville Dean)
- Date: 1988
- Subjects: Cichlids -- Nysas, Lake , Cichlids -- Nyasa, Lake -- Physiology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5208 , http://hdl.handle.net/10962/d1004596 , Cichlids -- Nysas, Lake , Cichlids -- Nyasa, Lake -- Physiology
- Description: The intensive tank culture of ornamental mouthbrooding cichlids poses several problems which limit their aquaculture potential. This project addressed some of these problems for Aulonocara baenschi. The production of juveniles in 2501 aquaria was accelerated when: a) aquaria were equipped with refuges, b) females of less than 70mm in standard length were used as broodstock, c) mouthbrooding females were replaced with gravid females at seven day intervals, and d) embryos were removed from the mouths of females at replacement times for artificial incubation. Two sex ratios also accelerated juvenile production. The sex ratio (male:females) 1:30 yielded the highest spawning returns per tank, and therefore represented the most effective utilization of aquarium space (a critical consideration for the small-scale culturist). Contrastingly, the sex ratio 1:12 yielded the highest clutch sizes and a high percentage female spawning return, and therefore represented the most effective utilization of broodstock (an important consideration for culturists inhibited by financial constraints or having an abundance of culture vessels). The reproductive behaviour of A. baenschi was described. Emphasis was given to aspects of reproduction of relevance to culture, for example; spawning times and seasons, clutch size and its relationship with female size, age and size of sexes at first spawning, embryo development rate and size of first swimming juveniles. The slow growth rate of juveniles, combined with a late attainment of marketable size (± seven months) was a major limitation affecting the cuIture potential of A. baenschi. Two factors favouring the cuIture of this species was the high survival rate recorded for both adults and juveniles, and the comparatively high prices fetched by fish on domestic wholesale markets (R4,00 per fish). It is recommended that A. baenschi should not be cultured exclusively for the relatively small South African ornamental fish market. A more profitable strategy for domestic culturists should involve a major production effort with A. baenschi and other desirable species of Aulonocara (e.g . A. ethelwynnae; A. hansbaenschi; A. stuartgranti & A. maylandi) for foreign markets (in particular, the U.S.A.; Western Europe & Japan). Not only are these markets massive, but prevailing exchange rates of the Rand with these currencies favour such a strategy.
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A convenient approach to the deterministic routing of MIDI messages
- Authors: Shaw, Brent Roy
- Date: 2018
- Subjects: MIDI (Standard) , Microcontrollers , XMOS Limited , Computer architecture , Embedded computer systems
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63256 , vital:28387
- Description: This research investigates the design and development of a Wireless MIDI Connection Management solution in order to create a deterministic MIDI transmission system. A investigation of the MIDI protocol show it to have certain limitation that can be overcome through the use of transmission solutions. These solutions can be used to improve on the versatility of MIDI while overcoming the MIDI's notorious cable length limitation. XMOS's deterministic XS1 microcontrollers are used to enable the design of a real-time system. The MIDINet system is investigated to identify both the strengths and weaknesses of such a connection management system, while other systems for network transmission of MIDI messages are reviewed. These investigations lead to a design concept for a new network MIDI transmission system that allows for the remote management of connections. The design and subsequent implementation of both the transmission system and the connection management system are then detailed. A testing methodology is then devised to allow for the newly created connection management system to be compared to the MIDINet system. The findings show the deterministic system to have lower latency than that of the MIDINet system, while utilising more compact and power efficient hardware.
- Full Text:
- Authors: Shaw, Brent Roy
- Date: 2018
- Subjects: MIDI (Standard) , Microcontrollers , XMOS Limited , Computer architecture , Embedded computer systems
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/63256 , vital:28387
- Description: This research investigates the design and development of a Wireless MIDI Connection Management solution in order to create a deterministic MIDI transmission system. A investigation of the MIDI protocol show it to have certain limitation that can be overcome through the use of transmission solutions. These solutions can be used to improve on the versatility of MIDI while overcoming the MIDI's notorious cable length limitation. XMOS's deterministic XS1 microcontrollers are used to enable the design of a real-time system. The MIDINet system is investigated to identify both the strengths and weaknesses of such a connection management system, while other systems for network transmission of MIDI messages are reviewed. These investigations lead to a design concept for a new network MIDI transmission system that allows for the remote management of connections. The design and subsequent implementation of both the transmission system and the connection management system are then detailed. A testing methodology is then devised to allow for the newly created connection management system to be compared to the MIDINet system. The findings show the deterministic system to have lower latency than that of the MIDINet system, while utilising more compact and power efficient hardware.
- Full Text:
A corporate social responsibility (CSR) analysis of the transformation of the mobile telephone industry of South Africa
- Authors: Nyamande, Godfrey
- Date: 2019
- Subjects: Social responsibility of business -- South Africa , Cell phone systems -- Moral and ethical aspects -- South Africa , Mobile communication systems -- Moral and ethicsl aspects -- South Africa , Telecommunication -- Moral and ethicsl aspects -- South Africa
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/93887 , vital:30967
- Description: Corporate Social Responsibility (CSR) requires companies to fulfil certain responsibilities in society that are outside of the core operational activities of the company. The socio-economic dynamics of the region or country that the company operates from, as well as the pressures those stakeholders tend to apply, have a bearing on the direction that the CSR development takes. Mirvis and Googins (2006) described the CSR developmental path followed by international companies. Before that Carroll (1991) had suggested a developmental pyramid that suggested that philanthropy represented the highest level of CSR development. This pyramid was later revised by Visser (2005) in order to suit the African environment. In South Africa CSR development is mainly driven by legislation through the BEE Act of 2003. This has resulted in the birth of industry charters that guide the development of CSR in different industries. To fulfil the requirements of the charter and score vital B-BBEE points, companies have to engage with both internal and external stakeholders, holistically. One such industry is the telecommunications industry, which formed the basis for this research, with special emphasis on the mobile telecommunications industry. The research set out to explore how the industry charter and company practices compared with the existing literature on CSR. The aim of this research was therefore to analyse the existing CSR practices in the mobile telecommunication industry in South Africa, where the B-BBEE Act plays a pivotal role in influencing practice. Using publically available documents, this research conducted an analysis of the B-BBEE components in the telecommunications charter as the catalyst to development of CSR in the South African mobile telecommunications industry, with the three dominant companies, - MTN, Vodacom and Cell C – being utilised as case studies. Key research findings were that transformation is still low in terms of equitable gender and racial representation at the top management level. The industry charter attempts to address these and other social challenges and economic problems. However, it does not address ecological issues that may emanate from the industry operations. Therefore, a CSR assessment framework that addresses all stakeholders for sustainable economic development is proposed.
- Full Text:
- Authors: Nyamande, Godfrey
- Date: 2019
- Subjects: Social responsibility of business -- South Africa , Cell phone systems -- Moral and ethical aspects -- South Africa , Mobile communication systems -- Moral and ethicsl aspects -- South Africa , Telecommunication -- Moral and ethicsl aspects -- South Africa
- Language: English
- Type: text , Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10962/93887 , vital:30967
- Description: Corporate Social Responsibility (CSR) requires companies to fulfil certain responsibilities in society that are outside of the core operational activities of the company. The socio-economic dynamics of the region or country that the company operates from, as well as the pressures those stakeholders tend to apply, have a bearing on the direction that the CSR development takes. Mirvis and Googins (2006) described the CSR developmental path followed by international companies. Before that Carroll (1991) had suggested a developmental pyramid that suggested that philanthropy represented the highest level of CSR development. This pyramid was later revised by Visser (2005) in order to suit the African environment. In South Africa CSR development is mainly driven by legislation through the BEE Act of 2003. This has resulted in the birth of industry charters that guide the development of CSR in different industries. To fulfil the requirements of the charter and score vital B-BBEE points, companies have to engage with both internal and external stakeholders, holistically. One such industry is the telecommunications industry, which formed the basis for this research, with special emphasis on the mobile telecommunications industry. The research set out to explore how the industry charter and company practices compared with the existing literature on CSR. The aim of this research was therefore to analyse the existing CSR practices in the mobile telecommunication industry in South Africa, where the B-BBEE Act plays a pivotal role in influencing practice. Using publically available documents, this research conducted an analysis of the B-BBEE components in the telecommunications charter as the catalyst to development of CSR in the South African mobile telecommunications industry, with the three dominant companies, - MTN, Vodacom and Cell C – being utilised as case studies. Key research findings were that transformation is still low in terms of equitable gender and racial representation at the top management level. The industry charter attempts to address these and other social challenges and economic problems. However, it does not address ecological issues that may emanate from the industry operations. Therefore, a CSR assessment framework that addresses all stakeholders for sustainable economic development is proposed.
- Full Text:
A corpus-based approach to writing in German as a foreign language in the South African tertiary context
- Authors: Ortner, Gwyndolen Jeanie
- Date: 2016
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3660 , http://hdl.handle.net/10962/d1021256
- Description: German Studies students at Rhodes University have normally never studied the German language before enrolling for the first-year course and face the challenge of a fairly rapid linguistic advancement in order to engage meaningfully with the literatures and cultures of German-speaking countries. This thesis investigates the process of teaching and learning to write in a more academic way in German as a foreign language at Rhodes University, using corpus linguistic tools for both analysis and instruction. The past 20 years have shown a shift from traditional teaching methods resting on notions of an underlying prescriptive grammar, to teaching based on insights from real-life language data (Gabrielatos, 2005; Krummes & Ensslin, 2012; Sinclair, 1997) and applications of corpora to teaching and learning have shown to be highly successful in many European contexts (Aijmer, 2010; Johns, 1991; Granger, et al., 2002; Varley, 2009). In the South African context however, this is a relatively new concept with few publications on the application of corpus linguistics to language teaching (Van Rooy, 2008), and one which does not seem to have reached its full potential. A writing course was instituted whose aim was two-fold: 1. to teach learners “every-day academic” German words (TAG words) and phrases (collocations) based on German mother-tongue corpus evidence; 2. to have learners write short assignments in German at regular intervals (Homstad & Thorson, 1996; Estes, et al., 1998); both aims with the overarching objective to improve the students’ academic register in German. After the writing course, 80% of the participants perceived that their writing had improved and specifically attributed this to the corpus-based instruction received during the writing course, and regular writing in German. Quantitative data (from the learner corpus created) shows a marked improvement in the use of the collocations taught. Moreover, participants (weaker students in particular) also found that their writing in English had improved as a result of the various exercises they had to complete as part of our German writing course.
- Full Text:
- Authors: Ortner, Gwyndolen Jeanie
- Date: 2016
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3660 , http://hdl.handle.net/10962/d1021256
- Description: German Studies students at Rhodes University have normally never studied the German language before enrolling for the first-year course and face the challenge of a fairly rapid linguistic advancement in order to engage meaningfully with the literatures and cultures of German-speaking countries. This thesis investigates the process of teaching and learning to write in a more academic way in German as a foreign language at Rhodes University, using corpus linguistic tools for both analysis and instruction. The past 20 years have shown a shift from traditional teaching methods resting on notions of an underlying prescriptive grammar, to teaching based on insights from real-life language data (Gabrielatos, 2005; Krummes & Ensslin, 2012; Sinclair, 1997) and applications of corpora to teaching and learning have shown to be highly successful in many European contexts (Aijmer, 2010; Johns, 1991; Granger, et al., 2002; Varley, 2009). In the South African context however, this is a relatively new concept with few publications on the application of corpus linguistics to language teaching (Van Rooy, 2008), and one which does not seem to have reached its full potential. A writing course was instituted whose aim was two-fold: 1. to teach learners “every-day academic” German words (TAG words) and phrases (collocations) based on German mother-tongue corpus evidence; 2. to have learners write short assignments in German at regular intervals (Homstad & Thorson, 1996; Estes, et al., 1998); both aims with the overarching objective to improve the students’ academic register in German. After the writing course, 80% of the participants perceived that their writing had improved and specifically attributed this to the corpus-based instruction received during the writing course, and regular writing in German. Quantitative data (from the learner corpus created) shows a marked improvement in the use of the collocations taught. Moreover, participants (weaker students in particular) also found that their writing in English had improved as a result of the various exercises they had to complete as part of our German writing course.
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A corpus-based investigation of Xhosa English in the classroom setting
- Authors: Platt, Candice Lee
- Date: 2004 , 2013-06-03
- Subjects: English language -- Study and teaching (Foreign speakers) -- South Africa , Computational linguistics , Black English -- South Africa , Black people -- South Africa -- Eastern Cape -- Education
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2379 , http://hdl.handle.net/10962/d1007613 , English language -- Study and teaching (Foreign speakers) -- South Africa , Computational linguistics , Black English -- South Africa , Black people -- South Africa -- Eastern Cape -- Education
- Description: This study is an investigation of Xhosa English as used by teachers in the Grahamstown area of the Eastern Cape. The aims of the study were firstly, to compile a 20 000 word mini-corpus of the spoken English of Xhosa mother-tongue teachers in Grahamstown, and to use this data to describe the characteristics of Xhosa English used in the classroom context; and secondly, to assess the usefulness of a corpus-based approach to a study of this nature. The English of five Xhosa mother-tongue teachers was investigated. These teachers were recorded while teaching in English and the data was then transcribed for analysis. The data was analysed using Wordsmith Tools to investigate patterns in the teachers' language. Grammatical, lexical and discourse patterns were explored based on the findings of other researchers' investigations of Black South African English and Xhosa English. In general, many of the patterns reported in the literature were found in the data, but to a lesser extent than reported in literature which gave quantitative information. Some features not described elsewhere were also found. The corpus-based approach was found to be useful within the limits of pattern-matching. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Authors: Platt, Candice Lee
- Date: 2004 , 2013-06-03
- Subjects: English language -- Study and teaching (Foreign speakers) -- South Africa , Computational linguistics , Black English -- South Africa , Black people -- South Africa -- Eastern Cape -- Education
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2379 , http://hdl.handle.net/10962/d1007613 , English language -- Study and teaching (Foreign speakers) -- South Africa , Computational linguistics , Black English -- South Africa , Black people -- South Africa -- Eastern Cape -- Education
- Description: This study is an investigation of Xhosa English as used by teachers in the Grahamstown area of the Eastern Cape. The aims of the study were firstly, to compile a 20 000 word mini-corpus of the spoken English of Xhosa mother-tongue teachers in Grahamstown, and to use this data to describe the characteristics of Xhosa English used in the classroom context; and secondly, to assess the usefulness of a corpus-based approach to a study of this nature. The English of five Xhosa mother-tongue teachers was investigated. These teachers were recorded while teaching in English and the data was then transcribed for analysis. The data was analysed using Wordsmith Tools to investigate patterns in the teachers' language. Grammatical, lexical and discourse patterns were explored based on the findings of other researchers' investigations of Black South African English and Xhosa English. In general, many of the patterns reported in the literature were found in the data, but to a lesser extent than reported in literature which gave quantitative information. Some features not described elsewhere were also found. The corpus-based approach was found to be useful within the limits of pattern-matching. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
A correlational analysis investigating relationships between gender role ideology and attitudes towards gender-based violence
- Authors: Krutani, Siposetu
- Date: 2019
- Subjects: Women -- Violence against -- South Africa , Sex role -- Psychological aspects -- South Africa , Male domination (Social structure) -- South Africa , Rhodes University -- Students -- Attitudes , Rape in universities and colleges -- South Africa , Social movements -- South Africa -- Makhanda , Women college students -- Violence against -- South Africa , Male college students -- South Africa -- Attitudes , Women college students -- Psychology -- South Africa , Male college students -- Psychology -- South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/96658 , vital:31305
- Description: This study forms part of a larger project investigating attitudes towards intimate partner violence, dating violence and other forms of gender-based violence with the Rhodes University context. The primary purpose was to establish a baseline descriptive understanding of participants‟ attitudes towards and perceptions of gender-based violence. With the aim to generate results that would somehow inform the larger project, the current study sought to investigate whether a relationship exists between gender-role ideology and attitudes towards gender-based violence amongst a university population which was inclusive of registered students and employees of the university (n = 308). Four samples were categorised: student sample, academic staff sample, administrative support staff sample and operational support staff sample. A once-off, cross sectional survey design was used to obtain the data. The results of the study revealed that the participants in the study uphold largely non-traditional gender-role ideologies, are generally intolerant of dating violence and are rejecting of rape myths. As predicted in the literature, the study revealed that demographics such as gender, religion, age, level of education, number of years spent in the institution, race, and student accommodation have an impact on the relationship between adherence to traditional gender-role ideology and tolerance towards dating violence, as well as on the relationship between adherence to traditional gender-role ideology and rape myth acceptance and the relationship between rape myth acceptance and tolerance towards dating violence. The study contributes to the growing body of knowledge on gender-based violence in institutions of higher learning and could help improve sexual violence prevention programmes in such contexts.
- Full Text:
- Authors: Krutani, Siposetu
- Date: 2019
- Subjects: Women -- Violence against -- South Africa , Sex role -- Psychological aspects -- South Africa , Male domination (Social structure) -- South Africa , Rhodes University -- Students -- Attitudes , Rape in universities and colleges -- South Africa , Social movements -- South Africa -- Makhanda , Women college students -- Violence against -- South Africa , Male college students -- South Africa -- Attitudes , Women college students -- Psychology -- South Africa , Male college students -- Psychology -- South Africa
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10962/96658 , vital:31305
- Description: This study forms part of a larger project investigating attitudes towards intimate partner violence, dating violence and other forms of gender-based violence with the Rhodes University context. The primary purpose was to establish a baseline descriptive understanding of participants‟ attitudes towards and perceptions of gender-based violence. With the aim to generate results that would somehow inform the larger project, the current study sought to investigate whether a relationship exists between gender-role ideology and attitudes towards gender-based violence amongst a university population which was inclusive of registered students and employees of the university (n = 308). Four samples were categorised: student sample, academic staff sample, administrative support staff sample and operational support staff sample. A once-off, cross sectional survey design was used to obtain the data. The results of the study revealed that the participants in the study uphold largely non-traditional gender-role ideologies, are generally intolerant of dating violence and are rejecting of rape myths. As predicted in the literature, the study revealed that demographics such as gender, religion, age, level of education, number of years spent in the institution, race, and student accommodation have an impact on the relationship between adherence to traditional gender-role ideology and tolerance towards dating violence, as well as on the relationship between adherence to traditional gender-role ideology and rape myth acceptance and the relationship between rape myth acceptance and tolerance towards dating violence. The study contributes to the growing body of knowledge on gender-based violence in institutions of higher learning and could help improve sexual violence prevention programmes in such contexts.
- Full Text:
A cost-benefit analysis of electricity supply in a developing country, with reference to Venda
- Authors: Themeli, Tshimangadzo Booi
- Date: 1992
- Subjects: Electrification -- Economic aspects -- South Africa -- Venda , Electric utilities -- South Africa -- Venda , Cost effectiveness , Electrification -- Cost effectiveness
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1022 , http://hdl.handle.net/10962/d1002757 , Electrification -- Economic aspects -- South Africa -- Venda , Electric utilities -- South Africa -- Venda , Cost effectiveness , Electrification -- Cost effectiveness
- Description: This study concentrates specificaUy on assessing those elements of private and external costs and benefits which need to be accounted for in analyzing the role of electricity supply in a developing region. To facilitate this aim, three interrelated questions are addressed. The first question examines the reasons why a critical need for electrification in developing areas exists. In this regard, a selective review of the literature on development economics is offered, illuminating the previous neglect of the rural dimension in development and the associated problems of poverty and inequality, a lack of infrastructure and the general inability to fulfill basic needs. The second question is devoted exclusively to an economic analysis of the supply of electricity in developing areas. A broad theoretical review on whether an unregulated or regulated (private or public) sector should be responsible for the provision of electrification is presented. This evaluation highlights the various welfare implications and efficiency considerations that appear to be relevant in the present context. The final question, which constitutes the central proposition of the thesis, establishes how electrification should be supplied in developing areas. To this end, the conditions specific to a region in Venda are discussed. An attempt is made to identify the private and external costs and benefits relating to electricity supply and the corresponding costs and benefits pertaining to alternative sources of energy. Since the incidence and nature of these costs and benefits could only be ascertained from individual households, it was deemed necessary to undertake a questionnaire study of residents in Makwarela township and its periurban settlement of Lufule-Tshisele. A number of basic trends were evident from the research results. As far as the various benefits are concerned, respondents tended to place a much higher value on both the private and external benefits associated with electricity than its alternatives. At the same time, the survey found that although the private (or monetary) cost of electricity far exceeded the corresponding cost of alternative energy sources, the external costs were significant in the case of alternative energy sources, but virtually non-existent in the case of electricity. On the whole, the Venda survey seems to suggest that an economic case can be made for involving the broader community in subsidising the supply of electricity in Makwarela, Lufule-Tshisele and other areas. While such a subsidy can perhaps be justified on distribution grounds alone, and more specifically in terms of the rapid and pronounced effect it is likely to have on the quality of life in the region, its real worth lies in the fact that it may confer certain external benefits on the community.
- Full Text:
- Authors: Themeli, Tshimangadzo Booi
- Date: 1992
- Subjects: Electrification -- Economic aspects -- South Africa -- Venda , Electric utilities -- South Africa -- Venda , Cost effectiveness , Electrification -- Cost effectiveness
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:1022 , http://hdl.handle.net/10962/d1002757 , Electrification -- Economic aspects -- South Africa -- Venda , Electric utilities -- South Africa -- Venda , Cost effectiveness , Electrification -- Cost effectiveness
- Description: This study concentrates specificaUy on assessing those elements of private and external costs and benefits which need to be accounted for in analyzing the role of electricity supply in a developing region. To facilitate this aim, three interrelated questions are addressed. The first question examines the reasons why a critical need for electrification in developing areas exists. In this regard, a selective review of the literature on development economics is offered, illuminating the previous neglect of the rural dimension in development and the associated problems of poverty and inequality, a lack of infrastructure and the general inability to fulfill basic needs. The second question is devoted exclusively to an economic analysis of the supply of electricity in developing areas. A broad theoretical review on whether an unregulated or regulated (private or public) sector should be responsible for the provision of electrification is presented. This evaluation highlights the various welfare implications and efficiency considerations that appear to be relevant in the present context. The final question, which constitutes the central proposition of the thesis, establishes how electrification should be supplied in developing areas. To this end, the conditions specific to a region in Venda are discussed. An attempt is made to identify the private and external costs and benefits relating to electricity supply and the corresponding costs and benefits pertaining to alternative sources of energy. Since the incidence and nature of these costs and benefits could only be ascertained from individual households, it was deemed necessary to undertake a questionnaire study of residents in Makwarela township and its periurban settlement of Lufule-Tshisele. A number of basic trends were evident from the research results. As far as the various benefits are concerned, respondents tended to place a much higher value on both the private and external benefits associated with electricity than its alternatives. At the same time, the survey found that although the private (or monetary) cost of electricity far exceeded the corresponding cost of alternative energy sources, the external costs were significant in the case of alternative energy sources, but virtually non-existent in the case of electricity. On the whole, the Venda survey seems to suggest that an economic case can be made for involving the broader community in subsidising the supply of electricity in Makwarela, Lufule-Tshisele and other areas. While such a subsidy can perhaps be justified on distribution grounds alone, and more specifically in terms of the rapid and pronounced effect it is likely to have on the quality of life in the region, its real worth lies in the fact that it may confer certain external benefits on the community.
- Full Text:
A counter-narrative analysis of psychological riot in contemporary painting
- Authors: Ng’ok, Ivy Chemutai
- Date: 2018
- Subjects: Painting -- South Africa , Painting -- Psychological aspects , Distress (Psychology) in art , Imperialism in art , Violence in art , Patriarchy in art Political art
- Language: English
- Type: text , Thesis , Masters , MFA
- Identifier: http://hdl.handle.net/10962/60458 , vital:27782
- Description: I am rioting against a system of my own beliefs about the world. In my mind, I struggle to overcome these beliefs, hence, I construct the psychological riot as ‘the disturbance of the mind’. In this mini-thesis, I argue that it exists in the psyche too. This definition of psyche becomes painterly. My psychological riot is difficult to trace, let alone paint. The beliefs that I target are patriarchy within a post-colonial context. I use theories that are simultaneously psychological and corporeal. They address violence colonialist system. The psychological riot is an practical submission.
- Full Text:
- Authors: Ng’ok, Ivy Chemutai
- Date: 2018
- Subjects: Painting -- South Africa , Painting -- Psychological aspects , Distress (Psychology) in art , Imperialism in art , Violence in art , Patriarchy in art Political art
- Language: English
- Type: text , Thesis , Masters , MFA
- Identifier: http://hdl.handle.net/10962/60458 , vital:27782
- Description: I am rioting against a system of my own beliefs about the world. In my mind, I struggle to overcome these beliefs, hence, I construct the psychological riot as ‘the disturbance of the mind’. In this mini-thesis, I argue that it exists in the psyche too. This definition of psyche becomes painterly. My psychological riot is difficult to trace, let alone paint. The beliefs that I target are patriarchy within a post-colonial context. I use theories that are simultaneously psychological and corporeal. They address violence colonialist system. The psychological riot is an practical submission.
- Full Text:
A critical analysis of A2 Fast Track Lowveld sugar cane farms in Zimbabwe in global value chains: interrogating the lives of farmers and farm labourers
- Chingono, Kudakwashe Rejoice
- Authors: Chingono, Kudakwashe Rejoice
- Date: 2019
- Subjects: International trade , Sugar trade -- Zimbabwe , Sugar growing -- Zimbabwe -- Social aspects , Agriculture -- Zimbabwe -- Social aspects
- Language: English
- Type: text , Thesis , Masters , MSocSci
- Identifier: http://hdl.handle.net/10962/93933 , vital:30972
- Description: The sugar cane industry has for many years been a lucrative business with a booming global market. In Zimbabwe, the sugar cane industry is no exception, as it has been regarded as one of the most efficient in the region and even in the world. The sugar cane farms and mills in Zimbabwe are located in Triangle and Chiredzi, in the south-eastern part of the country and they are under the ownership of Tongaat Hullet and the Zimbabwean A2 farmers. The focus of this is on the A2 fast track farms in Hippo Valley, which are now owned by black farmers but as out-growers for Tongaat Hullet. The crucial question addressed in the thesis is whether the A2 sugar cane farmers and their workers, located at the production end of the sugar cane global value chain, are benefitting from their involvement in this value chain. A number of scholars argue that global value chains lead to economic and social upgrading at the production end of the chain, based on thoughts contained in modernisation and trickledown theory. There is an assumption, then, that integration into the global economy leads to economic upgrading which translates into social upgrading. In drawing upon critical global value theorists, bolstered by the Marxist perspective, considers the importance of a more critical view of global value chains in relation to the sugar cane industry in Zimbabwe, with the particular focus on A2 farms. Thus, the main objective of the thesis is to consider the lives and livelihoods of A2 sugar cane farmers and sugar cane workers through a case study, in the context of global value chains and arguments around economic and social upgrading. This is pursued through a case study of six A2 farms, which involved interviewing farmers, supervisors, and both permanent and temporary workers. The thesis concludes that there is no significant evidence of social upgrading amongst the labour force, and that the A2 farmers are in constant tension with Tongaat Hullet in seeking to engage in economic upgrading of their status as commercial farmers.
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- Authors: Chingono, Kudakwashe Rejoice
- Date: 2019
- Subjects: International trade , Sugar trade -- Zimbabwe , Sugar growing -- Zimbabwe -- Social aspects , Agriculture -- Zimbabwe -- Social aspects
- Language: English
- Type: text , Thesis , Masters , MSocSci
- Identifier: http://hdl.handle.net/10962/93933 , vital:30972
- Description: The sugar cane industry has for many years been a lucrative business with a booming global market. In Zimbabwe, the sugar cane industry is no exception, as it has been regarded as one of the most efficient in the region and even in the world. The sugar cane farms and mills in Zimbabwe are located in Triangle and Chiredzi, in the south-eastern part of the country and they are under the ownership of Tongaat Hullet and the Zimbabwean A2 farmers. The focus of this is on the A2 fast track farms in Hippo Valley, which are now owned by black farmers but as out-growers for Tongaat Hullet. The crucial question addressed in the thesis is whether the A2 sugar cane farmers and their workers, located at the production end of the sugar cane global value chain, are benefitting from their involvement in this value chain. A number of scholars argue that global value chains lead to economic and social upgrading at the production end of the chain, based on thoughts contained in modernisation and trickledown theory. There is an assumption, then, that integration into the global economy leads to economic upgrading which translates into social upgrading. In drawing upon critical global value theorists, bolstered by the Marxist perspective, considers the importance of a more critical view of global value chains in relation to the sugar cane industry in Zimbabwe, with the particular focus on A2 farms. Thus, the main objective of the thesis is to consider the lives and livelihoods of A2 sugar cane farmers and sugar cane workers through a case study, in the context of global value chains and arguments around economic and social upgrading. This is pursued through a case study of six A2 farms, which involved interviewing farmers, supervisors, and both permanent and temporary workers. The thesis concludes that there is no significant evidence of social upgrading amongst the labour force, and that the A2 farmers are in constant tension with Tongaat Hullet in seeking to engage in economic upgrading of their status as commercial farmers.
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A critical analysis of community participation at the primary level of the health system in Goromonzi District, Zimbabwe
- Authors: Gondo, Rachel
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/1454 , vital:20059
- Description: The adoption of the primary health care approach by Zimbabwe in 1980 signalled the government’s intention to consolidate the gains of the liberation struggle by providing equitable health for all citizens regardless of race and class. This approach frames community participation as central to the design and implementation of responsive health systems. Having earned international recognition for its pro-poor policies in the social sectors after independence in 1980, the Zimbabwean government over the last three decades has overseen a progressive decline in the provision of health services and near collapse of the health sector. Participation of communities, whether in the form of organised groups or as unorganised members of the public, is argued to be an important pillar in the effective performance of a health system. There has been extensive research conducted on Zimbabwe’s implementation of primary health care in light of health status, accessibility and health services uptake. A few studies have been undertaken to demonstrate that the participation of communities in the health system is an important factor in improving the effectiveness of the health system in Zimbabwe. This thesis analyses the existing mechanisms for community participation in the health system in Zimbabwe and brings out multiple perspectives on the underlying contradictions, tensions and processes at play between policy and practice. This thesis makes a contribution to the growing number of studies on participation in health by offering an empirically rich critical analysis of community participation in the health system in one ward located in Goromonzi District in Zimbabwe. In examining the structural and procedural forms of the health system, insights concerning the nature and form of community participation in primary health care are brought to the fore. The thesis concludes that the ways in which community participation takes place in the health system in Zimbabwe is influenced by a number of socio-economic, political and societal factors and this in turn has a bearing on how health policy expresses itself in practice.
- Full Text:
- Authors: Gondo, Rachel
- Date: 2016
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/1454 , vital:20059
- Description: The adoption of the primary health care approach by Zimbabwe in 1980 signalled the government’s intention to consolidate the gains of the liberation struggle by providing equitable health for all citizens regardless of race and class. This approach frames community participation as central to the design and implementation of responsive health systems. Having earned international recognition for its pro-poor policies in the social sectors after independence in 1980, the Zimbabwean government over the last three decades has overseen a progressive decline in the provision of health services and near collapse of the health sector. Participation of communities, whether in the form of organised groups or as unorganised members of the public, is argued to be an important pillar in the effective performance of a health system. There has been extensive research conducted on Zimbabwe’s implementation of primary health care in light of health status, accessibility and health services uptake. A few studies have been undertaken to demonstrate that the participation of communities in the health system is an important factor in improving the effectiveness of the health system in Zimbabwe. This thesis analyses the existing mechanisms for community participation in the health system in Zimbabwe and brings out multiple perspectives on the underlying contradictions, tensions and processes at play between policy and practice. This thesis makes a contribution to the growing number of studies on participation in health by offering an empirically rich critical analysis of community participation in the health system in one ward located in Goromonzi District in Zimbabwe. In examining the structural and procedural forms of the health system, insights concerning the nature and form of community participation in primary health care are brought to the fore. The thesis concludes that the ways in which community participation takes place in the health system in Zimbabwe is influenced by a number of socio-economic, political and societal factors and this in turn has a bearing on how health policy expresses itself in practice.
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A critical analysis of development NGO programmes in rural areas: a case study of East Cape Agricultural Research Project in South Africa
- Authors: Sanyangore, Agnes
- Date: 2019
- Subjects: East Cape Agricultural Research Project , Non-governmental organization -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape , Agricultural development projects -- South Africa -- Eastern Cape , Land reform -- South Africa -- Eastern Cape , Land tenure -- South Africa -- Eastern Cape
- Language: English
- Type: text , Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/96187 , vital:31248
- Description: For a number of decades now, development non-governmental organisations (DNGOs) have been central to the world-wide development system which involves funding from international donors. Overall, DNGOs rely quite fundamentally on their donors for organisational sustainability, such that upward accountability to donors is inevitable. At the same time, as development agents, DNGOs are often celebrated for the deep participatory methodologies used when engaging with the beneficiaries of their programmes, leading to significant downward accountability – as least potentially. Often, for DNGOs, an awkward tension between upward and downward accountability exists. This thesis considers this tension by examining a DNGO in South Africa, namely, the East Cape Agricultural Research Project (ECARP), which focuses on questions around land redistribution. ECARP works with farm labourers and dwellers on commercial farms and small-scale farmers on redistributed farms. In the context of a broader understanding of ECARP’s mission, capacities and programmes, the thesis looks specifically at ECARP’s food security and sovereignty programme amongst small-scale farmers on redistributed farms. By drawing upon Interface theory, the thesis discusses in detail the diverse manner in which ECARP uses participatory methodologies in this particular programme. The thesis concludes that there is a reasonable degree of downward accountability in this programme, but that this does not distract from the fact that ECARP remains within the tension-riddled space marked by dual demands for accountability.
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- Authors: Sanyangore, Agnes
- Date: 2019
- Subjects: East Cape Agricultural Research Project , Non-governmental organization -- South Africa -- Eastern Cape , Rural development -- South Africa -- Eastern Cape , Agricultural development projects -- South Africa -- Eastern Cape , Land reform -- South Africa -- Eastern Cape , Land tenure -- South Africa -- Eastern Cape
- Language: English
- Type: text , Thesis , Masters , MSocSc
- Identifier: http://hdl.handle.net/10962/96187 , vital:31248
- Description: For a number of decades now, development non-governmental organisations (DNGOs) have been central to the world-wide development system which involves funding from international donors. Overall, DNGOs rely quite fundamentally on their donors for organisational sustainability, such that upward accountability to donors is inevitable. At the same time, as development agents, DNGOs are often celebrated for the deep participatory methodologies used when engaging with the beneficiaries of their programmes, leading to significant downward accountability – as least potentially. Often, for DNGOs, an awkward tension between upward and downward accountability exists. This thesis considers this tension by examining a DNGO in South Africa, namely, the East Cape Agricultural Research Project (ECARP), which focuses on questions around land redistribution. ECARP works with farm labourers and dwellers on commercial farms and small-scale farmers on redistributed farms. In the context of a broader understanding of ECARP’s mission, capacities and programmes, the thesis looks specifically at ECARP’s food security and sovereignty programme amongst small-scale farmers on redistributed farms. By drawing upon Interface theory, the thesis discusses in detail the diverse manner in which ECARP uses participatory methodologies in this particular programme. The thesis concludes that there is a reasonable degree of downward accountability in this programme, but that this does not distract from the fact that ECARP remains within the tension-riddled space marked by dual demands for accountability.
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A critical analysis of employment equity measures in South Africa
- Authors: Laher, Ismail
- Date: 2007
- Subjects: South Africa. Employment Equity Act, 1998 , Labor laws and legislation -- South Africa , Discrimination in employment -- Law and legislation -- South Africa , Affirmative action programs -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3680 , http://hdl.handle.net/10962/d1003195 , South Africa. Employment Equity Act, 1998 , Labor laws and legislation -- South Africa , Discrimination in employment -- Law and legislation -- South Africa , Affirmative action programs -- Law and legislation -- South Africa
- Description: This thesis analyses the Employment Equity Act 55 of 1998 and its application in labour law in South Africa. After an initial examination of the general concepts with regards to employment equity and current international conventions regarding employment equity, the study will move on to examine employment equity as it stands in the law today. In examining the current law regarding employment equity, a brief historical background will be offered in order to show the legacy of apartheid: the immense disparity between the different categories of South African people in the modern era. By using this background and analysing the relevant provisions of the Constitution, it will be argued that there is a very real need for employment equity measures to bring about a true sense of equality in South Africa and that such measures are fully endorsed by the Constitution. After it has been established that affirmative action is an important tool in the creation of an equal South Africa, the measures put in place to help create this equal South Africa will be critically analysed. This critical analysis will point out certain weaknesses in the current affirmative action system. Following this critical analysis of the South African employment equity law, the employment equity systems used in Brazil, Canada and Malaysia will be examined in detail. The purpose of this analysis will be to find the strengths and weaknesses and successes and failures of these foreign systems. This will be done in order to highlight those areas of the foreign systems that can be implemented into South African law in order to make the South African employment equity system stronger. The weaknesses of those systems will also be highlighted in order to learn valuable lessons from other system’s failures so that South Africa does not make the same mistakes. The final part of this thesis will be in depth discussions and the proposal of solutions to the weaknesses of the South African employment equity system that have been highlighted throughout the thesis. These proposals will be put forward in order to ensure the most efficient and effective employment equity system in South Africa. There will also be a reassessment of the most valuable lessons learned from the foreign systems that would be easily implemented into or avoided by the South African system in order to ensure an effective employment equity system. The purpose, therefore, of this thesis is to critically analyse employment equity in South Africa. A further purpose will be to propose certain amendments and changes to the current system to ensure the Employment Equity Act is reflective of the needs of the people South Africa.
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- Authors: Laher, Ismail
- Date: 2007
- Subjects: South Africa. Employment Equity Act, 1998 , Labor laws and legislation -- South Africa , Discrimination in employment -- Law and legislation -- South Africa , Affirmative action programs -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3680 , http://hdl.handle.net/10962/d1003195 , South Africa. Employment Equity Act, 1998 , Labor laws and legislation -- South Africa , Discrimination in employment -- Law and legislation -- South Africa , Affirmative action programs -- Law and legislation -- South Africa
- Description: This thesis analyses the Employment Equity Act 55 of 1998 and its application in labour law in South Africa. After an initial examination of the general concepts with regards to employment equity and current international conventions regarding employment equity, the study will move on to examine employment equity as it stands in the law today. In examining the current law regarding employment equity, a brief historical background will be offered in order to show the legacy of apartheid: the immense disparity between the different categories of South African people in the modern era. By using this background and analysing the relevant provisions of the Constitution, it will be argued that there is a very real need for employment equity measures to bring about a true sense of equality in South Africa and that such measures are fully endorsed by the Constitution. After it has been established that affirmative action is an important tool in the creation of an equal South Africa, the measures put in place to help create this equal South Africa will be critically analysed. This critical analysis will point out certain weaknesses in the current affirmative action system. Following this critical analysis of the South African employment equity law, the employment equity systems used in Brazil, Canada and Malaysia will be examined in detail. The purpose of this analysis will be to find the strengths and weaknesses and successes and failures of these foreign systems. This will be done in order to highlight those areas of the foreign systems that can be implemented into South African law in order to make the South African employment equity system stronger. The weaknesses of those systems will also be highlighted in order to learn valuable lessons from other system’s failures so that South Africa does not make the same mistakes. The final part of this thesis will be in depth discussions and the proposal of solutions to the weaknesses of the South African employment equity system that have been highlighted throughout the thesis. These proposals will be put forward in order to ensure the most efficient and effective employment equity system in South Africa. There will also be a reassessment of the most valuable lessons learned from the foreign systems that would be easily implemented into or avoided by the South African system in order to ensure an effective employment equity system. The purpose, therefore, of this thesis is to critically analyse employment equity in South Africa. A further purpose will be to propose certain amendments and changes to the current system to ensure the Employment Equity Act is reflective of the needs of the people South Africa.
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