Dance and sexual politics some implications of the status of women in selected dance forms
- Authors: Poona, Sobhna Keshavelal
- Date: 1992
- Subjects: Dance -- Social aspects , Sex discrimination against women
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2145 , http://hdl.handle.net/10962/d1002377 , Dance -- Social aspects , Sex discrimination against women
- Description: This thesis explores, from a feminist perspective, some implications on the status of women in selected dance forms, and addresses the perceptions of women as 'inferior' and 'subordinate'. One of the intentions behind the work was, indeed, to challenge prevailing perceptions and create an awareness of sexism, capitalism and patriarchy, especially for the uncritical and uninformed who have become its victims. Part 1 offers an analysis of the premises upon which social, political and economic inequality are founded and consolidated, with specific reference to sexual inequality and sexual prejudice. Utilising a Marxist-feminist and semiotic approach, the machinations of the traditional mass media are linked to negative imaging of the female body in support of the sexist, patriarchal, capitalist male manipulator, who benefits from women's subordinate social status. Part 2 addresses the issue of sexual politics, and the implications for dance research and performance. The researcher offers a descriptive analysis of four specific dance forms, which serve to highlight the socialisation and educational processes that shape our perceptions and instruct our lives. A set of questionnaires was sent to fourteen autonomous dance institutions, including those attached to national performing arts councils. The thesis concludes with a summary of the results of the questionnaires that were distributed amongst female dancers, dance students and choreographers. The researcher questions our culture's preoccupation with the female body image, and posits the urgent need for an assessment of this situation, and an education which will create a better understanding and a more harmonious climate for development.
- Full Text:
- Date Issued: 1992
- Authors: Poona, Sobhna Keshavelal
- Date: 1992
- Subjects: Dance -- Social aspects , Sex discrimination against women
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2145 , http://hdl.handle.net/10962/d1002377 , Dance -- Social aspects , Sex discrimination against women
- Description: This thesis explores, from a feminist perspective, some implications on the status of women in selected dance forms, and addresses the perceptions of women as 'inferior' and 'subordinate'. One of the intentions behind the work was, indeed, to challenge prevailing perceptions and create an awareness of sexism, capitalism and patriarchy, especially for the uncritical and uninformed who have become its victims. Part 1 offers an analysis of the premises upon which social, political and economic inequality are founded and consolidated, with specific reference to sexual inequality and sexual prejudice. Utilising a Marxist-feminist and semiotic approach, the machinations of the traditional mass media are linked to negative imaging of the female body in support of the sexist, patriarchal, capitalist male manipulator, who benefits from women's subordinate social status. Part 2 addresses the issue of sexual politics, and the implications for dance research and performance. The researcher offers a descriptive analysis of four specific dance forms, which serve to highlight the socialisation and educational processes that shape our perceptions and instruct our lives. A set of questionnaires was sent to fourteen autonomous dance institutions, including those attached to national performing arts councils. The thesis concludes with a summary of the results of the questionnaires that were distributed amongst female dancers, dance students and choreographers. The researcher questions our culture's preoccupation with the female body image, and posits the urgent need for an assessment of this situation, and an education which will create a better understanding and a more harmonious climate for development.
- Full Text:
- Date Issued: 1992
Mtsitso 3
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1992
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Africa South Africa Rustenburg f-sa
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96421 , vital:31274 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC049a-03
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1992
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1992
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Africa South Africa Rustenburg f-sa
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96421 , vital:31274 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC049a-03
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1992
The status of the American bollworm, Heliothis armigera (Hubner) (Lepidoptera : Noctuidae), on sunflower in the central Transvaal
- Authors: Von Maltitz, Emil Friedrich
- Date: 1992
- Subjects: Helicoverpa armigera , Noctuidae -- South Africa -- Transvaal , Noctuidae , Sunflowers -- Diseases and pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5773 , http://hdl.handle.net/10962/d1005461 , Helicoverpa armigera , Noctuidae -- South Africa -- Transvaal , Noctuidae , Sunflowers -- Diseases and pests
- Description: Sunflower production in South Africa has increased four fold since the 1970's. This study was done to elucidate the pest status of Heliothis armigera (Hiibner) on sunflower. Field studies were undertaken at Warmbaths, Brits and Delmas during the summer seasons of 1988/89 to 1990/91. The infestations at the latter two areas were negligible throughout the study period and their statistics have not been included in this thesis. Plant development and oviposition by natural H. armigera populations were found to be correlated as, regardless of planting date, oviposition started at six to seven weeks after planting; when the flowering stage began. A peak in egg numbers was reached by the tenth week with an average for the three seasons at two eggs per plant. The eggs were laid singly on the bracts and bases of the flower buds. A peak in larval numbers was reached at the thirteenth week after planting with the average for the three seasons of 0,4 larvae per plant. The preferred feeding sites were on, between and under the bracts from where the larvae burrow into the pithy tissue of the receptacle. Only six percent of the larvae were found feeding directly on the achenes. Eggs and larvae collected were reared to determine the degree of parasitism. Overall, 19% of the eggs were parasitised; 18% by Telenomus ullyetti Nixon (Scelionidae) and one percent by Trichogrammatoidea lutea (Trichogrammatidae). Larval parasitism at Warmbaths was 23% in 1988/89, 27% in 1989/90 and 34% in 1990/91. Of the parasitised larvae, 44% succumbed to Palexorista prob. laxa (Tachinidae). The remainder were unidentified Braconidae and Ichneumonidae. Predators, such as chrysopids, were observed during the study but their effect on egg and larvae numbers was not studied in detail. A polyhedral virus occurred late in the seasons and caused mortality of the larvae. The low numbers of H. armigera on sunflower, the slight damage to the crop and the reasonably high rate of parasitism, all seem to indicate that H. armigera is not an economica1ly important pest of sunflower and that additional control methods are not justified.
- Full Text:
- Date Issued: 1992
- Authors: Von Maltitz, Emil Friedrich
- Date: 1992
- Subjects: Helicoverpa armigera , Noctuidae -- South Africa -- Transvaal , Noctuidae , Sunflowers -- Diseases and pests
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5773 , http://hdl.handle.net/10962/d1005461 , Helicoverpa armigera , Noctuidae -- South Africa -- Transvaal , Noctuidae , Sunflowers -- Diseases and pests
- Description: Sunflower production in South Africa has increased four fold since the 1970's. This study was done to elucidate the pest status of Heliothis armigera (Hiibner) on sunflower. Field studies were undertaken at Warmbaths, Brits and Delmas during the summer seasons of 1988/89 to 1990/91. The infestations at the latter two areas were negligible throughout the study period and their statistics have not been included in this thesis. Plant development and oviposition by natural H. armigera populations were found to be correlated as, regardless of planting date, oviposition started at six to seven weeks after planting; when the flowering stage began. A peak in egg numbers was reached by the tenth week with an average for the three seasons at two eggs per plant. The eggs were laid singly on the bracts and bases of the flower buds. A peak in larval numbers was reached at the thirteenth week after planting with the average for the three seasons of 0,4 larvae per plant. The preferred feeding sites were on, between and under the bracts from where the larvae burrow into the pithy tissue of the receptacle. Only six percent of the larvae were found feeding directly on the achenes. Eggs and larvae collected were reared to determine the degree of parasitism. Overall, 19% of the eggs were parasitised; 18% by Telenomus ullyetti Nixon (Scelionidae) and one percent by Trichogrammatoidea lutea (Trichogrammatidae). Larval parasitism at Warmbaths was 23% in 1988/89, 27% in 1989/90 and 34% in 1990/91. Of the parasitised larvae, 44% succumbed to Palexorista prob. laxa (Tachinidae). The remainder were unidentified Braconidae and Ichneumonidae. Predators, such as chrysopids, were observed during the study but their effect on egg and larvae numbers was not studied in detail. A polyhedral virus occurred late in the seasons and caused mortality of the larvae. The low numbers of H. armigera on sunflower, the slight damage to the crop and the reasonably high rate of parasitism, all seem to indicate that H. armigera is not an economica1ly important pest of sunflower and that additional control methods are not justified.
- Full Text:
- Date Issued: 1992
Mtsitso 2
- Venancio Mbande and his Chopi timbila xylophone group, Tracey, Andrew T N
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1992
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Africa South Africa Rustenburg f-sa
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96407 , vital:31273 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC049a-02
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1992
- Authors: Venancio Mbande and his Chopi timbila xylophone group , Tracey, Andrew T N
- Date: 1992
- Subjects: Chopi (African people) -- South Africa , Folk music , Xylophone music , Rattle (Musical instrument) , Drum (Musical instrument) , Africa South Africa Rustenburg f-sa
- Language: Chopi
- Type: sound recordings , field recordings , Sound recording material
- Identifier: http://hdl.handle.net/10962/96407 , vital:31273 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC049a-02
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1992
Pegmatite-hosted mineral deposits of central and southern Africa : regional geological settings and preliminary exploration target considerations
- Senzani, Freeman Elther David
- Authors: Senzani, Freeman Elther David
- Date: 1992
- Subjects: Pegmatites -- Africa, Southern , Mineralogy -- Africa, Southern , Pegmatites -- Africa, Central , Mineralogy -- Africa, Central
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5011 , http://hdl.handle.net/10962/d1006087
- Description: Review of literature shows that rocks of all ages from the Archaean to the early Phanerozoic host pegmatite-based mineralisation in the central and southern region of the African continent. The greatest concentrations occur in the Archaean and late Proterozoic orogenic belts, while early to middle Proterozoic granites do not, in general, host mineralisation. Pan-African mineralisation is present, but is not widespread. Some deposits previously considered to be of Pan-African have been shown to be of Proterozoic age. In common with occurrences of other regions, the deposits are closely associated with small, late- to post-tectonic granites. Therefore, preliminary assessment of the potential of granites as sources of pegmatite mineralisation should utilise satellite data or aerial photographs. The granites also tend to be alkaline and peraluminous. Thus, in the next stage, chemical analysis for selected major and trace elements should be conducted directly on granites if they occur as small plutons. For large granitic batholiths or terranes, preliminary stream-sediment surveys may be necessary to reduce the size of the target area. Subsequently, pegmatite zonation around suitable granites should be assessed as it allows attention to be focussed on areas likely to host the specific type of mineralisation being explored for.
- Full Text:
- Date Issued: 1992
- Authors: Senzani, Freeman Elther David
- Date: 1992
- Subjects: Pegmatites -- Africa, Southern , Mineralogy -- Africa, Southern , Pegmatites -- Africa, Central , Mineralogy -- Africa, Central
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5011 , http://hdl.handle.net/10962/d1006087
- Description: Review of literature shows that rocks of all ages from the Archaean to the early Phanerozoic host pegmatite-based mineralisation in the central and southern region of the African continent. The greatest concentrations occur in the Archaean and late Proterozoic orogenic belts, while early to middle Proterozoic granites do not, in general, host mineralisation. Pan-African mineralisation is present, but is not widespread. Some deposits previously considered to be of Pan-African have been shown to be of Proterozoic age. In common with occurrences of other regions, the deposits are closely associated with small, late- to post-tectonic granites. Therefore, preliminary assessment of the potential of granites as sources of pegmatite mineralisation should utilise satellite data or aerial photographs. The granites also tend to be alkaline and peraluminous. Thus, in the next stage, chemical analysis for selected major and trace elements should be conducted directly on granites if they occur as small plutons. For large granitic batholiths or terranes, preliminary stream-sediment surveys may be necessary to reduce the size of the target area. Subsequently, pegmatite zonation around suitable granites should be assessed as it allows attention to be focussed on areas likely to host the specific type of mineralisation being explored for.
- Full Text:
- Date Issued: 1992
An examination of the sonnets of E.E. Cummings
- Authors: Hughes, Jeremy Francis
- Date: 1992
- Subjects: Cummings, E. E. (Edward Estlin), 1894-1962 -- Criticism and interpretation Sonnets, English -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2244 , http://hdl.handle.net/10962/d1002287
- Description: This dissertation examines E. E. Cummings's writings in the sonnet genre and in those genres to which the sonnet is related in various ways. Its fundamental point is that, despite the surface impression of poetic iconoclasm for which Cummings has a popular reputation, in choosing to write sonnets he engages in a traditional literary practice. He does this because his purpose is always to be an artist, as defined by the Aesthetic movement which influenced him. In order to argue his embracing of a traditional artistic role, the theory of genres espoused by Alastair Fowler in his book, Kinds of Literature, is used. Chapter 1 of the thesis comprises general introductory material, both to the range of Aesthetic ideas to which Cummings subscribed, and to Fowler's theory of genres. Several key generic kinds are also described. The second chapter makes use of two of these generic models, the sonnet sequence and the silva, as a way of examining Cummings's deployment of the sonnet within the larger context of his poetry collections. It is a survey of the structure of the anthologies he compiled from Tulips & Chimneys (1922) to 95 Poems (1958). The third chapter explores the three sonnet modes which Cummings first identifies and names when compiling the manuscript of Tulips & Chimneys, and continues to use in his collections up to and including is 5 (1926). Chapter 4 shows how certain themes and concerns from these early sonnets are altered and synthesised as Cummings matures from an aesthete to a Romantic poet. Sonnets from his later books are taken to be representative of three central kinds in all of his work after is 5. Chapters 3 and 4 proceed by means of relatively close readings of individual sonnets. This practice fulfils a double role: it penetrates the apparent obscurity of the more difficult poems, and it attempts to preserve the integrity of individual poems which exemplify different generic tendencies in Cummings's work. One of Cummings's reasons for writing sonnets is that the form favours the achievement of what Wordsworth calls "a feeling of intense unity". In undertaking close readings of a few sonnets I have attempted to preserve that feeling.
- Full Text:
- Date Issued: 1992
- Authors: Hughes, Jeremy Francis
- Date: 1992
- Subjects: Cummings, E. E. (Edward Estlin), 1894-1962 -- Criticism and interpretation Sonnets, English -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2244 , http://hdl.handle.net/10962/d1002287
- Description: This dissertation examines E. E. Cummings's writings in the sonnet genre and in those genres to which the sonnet is related in various ways. Its fundamental point is that, despite the surface impression of poetic iconoclasm for which Cummings has a popular reputation, in choosing to write sonnets he engages in a traditional literary practice. He does this because his purpose is always to be an artist, as defined by the Aesthetic movement which influenced him. In order to argue his embracing of a traditional artistic role, the theory of genres espoused by Alastair Fowler in his book, Kinds of Literature, is used. Chapter 1 of the thesis comprises general introductory material, both to the range of Aesthetic ideas to which Cummings subscribed, and to Fowler's theory of genres. Several key generic kinds are also described. The second chapter makes use of two of these generic models, the sonnet sequence and the silva, as a way of examining Cummings's deployment of the sonnet within the larger context of his poetry collections. It is a survey of the structure of the anthologies he compiled from Tulips & Chimneys (1922) to 95 Poems (1958). The third chapter explores the three sonnet modes which Cummings first identifies and names when compiling the manuscript of Tulips & Chimneys, and continues to use in his collections up to and including is 5 (1926). Chapter 4 shows how certain themes and concerns from these early sonnets are altered and synthesised as Cummings matures from an aesthete to a Romantic poet. Sonnets from his later books are taken to be representative of three central kinds in all of his work after is 5. Chapters 3 and 4 proceed by means of relatively close readings of individual sonnets. This practice fulfils a double role: it penetrates the apparent obscurity of the more difficult poems, and it attempts to preserve the integrity of individual poems which exemplify different generic tendencies in Cummings's work. One of Cummings's reasons for writing sonnets is that the form favours the achievement of what Wordsworth calls "a feeling of intense unity". In undertaking close readings of a few sonnets I have attempted to preserve that feeling.
- Full Text:
- Date Issued: 1992
The effect of temperature and photoperiod on the digestive physiology of the South African abalone Haliotis midae
- Authors: Dixon, Mark Geoffrey
- Date: 1992
- Subjects: Abalone culture , Gastropoda -- Physiology , Gastropoda -- Food , Abalones -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5276 , http://hdl.handle.net/10962/d1005120 , Abalone culture , Gastropoda -- Physiology , Gastropoda -- Food , Abalones -- South Africa
- Description: Inadequate information of the nutritive physiology and the dietary requirements of abalone are the principle factors that currently limit the development of a formulated feed for the commercial culture of Haliotis midae. The need to develop a method to determine apparent digestibility co-efficient's for abalone in order to facilitate further applied nutritional research was identified. Animals between 50 and 80 mm were collected from natural stocks along the east Cape coast of South Africa at Port Alfred and Great Fish point, and acclimated to laboratory conditions. Initial trials demonstrated that H. midae accepted and preferred a semi-purified diet to the seaweed Plocamium corallorhiza, one of the main components of it's natural diet. A technique of determining apparent digestibility co-efficient's (ADC) using the indirect method with chromic oxide as an inert marker was developed. Digestibility trials yielded higher dry matter (DMADC) and crude protein apparent digestibility co-efficient's (CPADC) for the semi-purified diet than for two species of algae, Gelidium amanzii and P. corallorhiza (83.7% and 95.6%, 70.7% and 80.0%, and 29.9% and 57.3% respectively). The ability of the animals to utilize terrestrial animal and plant ingredients efficiently makes it feasible to use conventional feed ingredients in formulated feeds for H. midae. Trials to determine the effect of different temperatures (15°C, 18°C and 22°C) on DMADC and CPADC of the semipurified diet showed that peak digestibility occurred at 18°C. There was also a positive relationship between temperature and consumption rate. Although no enzyme studies with H. midae have been conducted, the peak ADC's at 18°C is attributed to an increase in enzyme activity at this temperature. Transit time, an inverse function of temperature and consumption, is considered to be responsible for the decrease in the ADC' s at 22°C in conjunction with a possible decrease in enzyme activity at this temperature. A photoperiod trial to investigate the effect of darkness on DMADC and CPADC of the semi-purified diet revealed that digestive efficiency decreased with increasing hours of darkness. There was also a positive relationship between duration of darkness and the rate of consumption. The decrease in ADC's is attributed to decreased transit times as the duration of darkness increased . The contribution of this project to the understanding of abalone nutrition, the development of a formulated abalone feed and systems design for abalone farms is discussed.
- Full Text:
- Date Issued: 1992
- Authors: Dixon, Mark Geoffrey
- Date: 1992
- Subjects: Abalone culture , Gastropoda -- Physiology , Gastropoda -- Food , Abalones -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5276 , http://hdl.handle.net/10962/d1005120 , Abalone culture , Gastropoda -- Physiology , Gastropoda -- Food , Abalones -- South Africa
- Description: Inadequate information of the nutritive physiology and the dietary requirements of abalone are the principle factors that currently limit the development of a formulated feed for the commercial culture of Haliotis midae. The need to develop a method to determine apparent digestibility co-efficient's for abalone in order to facilitate further applied nutritional research was identified. Animals between 50 and 80 mm were collected from natural stocks along the east Cape coast of South Africa at Port Alfred and Great Fish point, and acclimated to laboratory conditions. Initial trials demonstrated that H. midae accepted and preferred a semi-purified diet to the seaweed Plocamium corallorhiza, one of the main components of it's natural diet. A technique of determining apparent digestibility co-efficient's (ADC) using the indirect method with chromic oxide as an inert marker was developed. Digestibility trials yielded higher dry matter (DMADC) and crude protein apparent digestibility co-efficient's (CPADC) for the semi-purified diet than for two species of algae, Gelidium amanzii and P. corallorhiza (83.7% and 95.6%, 70.7% and 80.0%, and 29.9% and 57.3% respectively). The ability of the animals to utilize terrestrial animal and plant ingredients efficiently makes it feasible to use conventional feed ingredients in formulated feeds for H. midae. Trials to determine the effect of different temperatures (15°C, 18°C and 22°C) on DMADC and CPADC of the semipurified diet showed that peak digestibility occurred at 18°C. There was also a positive relationship between temperature and consumption rate. Although no enzyme studies with H. midae have been conducted, the peak ADC's at 18°C is attributed to an increase in enzyme activity at this temperature. Transit time, an inverse function of temperature and consumption, is considered to be responsible for the decrease in the ADC' s at 22°C in conjunction with a possible decrease in enzyme activity at this temperature. A photoperiod trial to investigate the effect of darkness on DMADC and CPADC of the semi-purified diet revealed that digestive efficiency decreased with increasing hours of darkness. There was also a positive relationship between duration of darkness and the rate of consumption. The decrease in ADC's is attributed to decreased transit times as the duration of darkness increased . The contribution of this project to the understanding of abalone nutrition, the development of a formulated abalone feed and systems design for abalone farms is discussed.
- Full Text:
- Date Issued: 1992
Training in note making : the effects of a training scheme on first year teacher-training students
- Authors: Ferreira, Ignatius Leopold
- Date: 1992
- Subjects: Note-taking Teachers -- Training of Study skills
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1803 , http://hdl.handle.net/10962/d1003688
- Description: This research work is based upon a training technique devised and recommended by J. Smith (1985) in a pamphlet published by The British Historical Association. The technique involves training school pupils in the making of notes from text books and references and then selecting appropriate points to answer specific questions. The technique was slightly adapted and used on a small Experimental Group drawn from Black first year College of Education students at an Eastern Cape College. A Control Group from the same College received conventional lectures on two topicS from the first year college syllabus - the San and Khoi peoples of Southern Africa. The Experimental Group was given a brief training period in Smith's technique and then worked independently on extended reading passages on the same topics. Both groups received a similar introduction of a video tape on the San and a slide presentation on the Khoi. Both groups wrote the same final test after their learning experiences were over and both groups completed questionnaires on the initial visual input and on their reactions to the learning experience. Comparisons are drawn between the results and the students' reaction to those learning experiences.
- Full Text:
- Date Issued: 1992
- Authors: Ferreira, Ignatius Leopold
- Date: 1992
- Subjects: Note-taking Teachers -- Training of Study skills
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1803 , http://hdl.handle.net/10962/d1003688
- Description: This research work is based upon a training technique devised and recommended by J. Smith (1985) in a pamphlet published by The British Historical Association. The technique involves training school pupils in the making of notes from text books and references and then selecting appropriate points to answer specific questions. The technique was slightly adapted and used on a small Experimental Group drawn from Black first year College of Education students at an Eastern Cape College. A Control Group from the same College received conventional lectures on two topicS from the first year college syllabus - the San and Khoi peoples of Southern Africa. The Experimental Group was given a brief training period in Smith's technique and then worked independently on extended reading passages on the same topics. Both groups received a similar introduction of a video tape on the San and a slide presentation on the Khoi. Both groups wrote the same final test after their learning experiences were over and both groups completed questionnaires on the initial visual input and on their reactions to the learning experience. Comparisons are drawn between the results and the students' reaction to those learning experiences.
- Full Text:
- Date Issued: 1992
The effect of pineapple cultivation on factors influencing soil erodibility in the Eastern Cape, South Africa
- Authors: Boucher, Kim Gillian
- Date: 1992
- Subjects: Soil erosion -- South Africa Pineapple industry -- South Africa -- Eastern Cape Agriculture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4827 , http://hdl.handle.net/10962/d1005502
- Description: The study examines the effect of ridged pineapple cultivation on factors influencing the soil erodibility of Glenrosa and Oakleaf soil forms in the Bathurst district of South Africa. A number of physical and chemical variables influencing soil erodibility are investigated, namely soil moisture, bulk density, porosity, infiltration rate, aggregate stability, shear strength, soil texture, soil structure, penetrability, organic carbon, pH and cation exchange capacity. These soil characteristics are examined in undisturbed soils under natural vegetation and compared to those on adjacent traffic areas, pineapple ridges and pineapple furrows. The results of the analyses between the four sample sites indicate that ridged cultivation of pineapples has a negative effect on factors influencing soil erodibility on the areas studied. The results of the analysis within each of the sample sites do not illustrate any clear relationships and thus depict the complexity and multiplicity of the soil erodibility phenomenon. A further study, augmenting the soil erodibility data with actual soil loss data, is recommended
- Full Text:
- Date Issued: 1992
- Authors: Boucher, Kim Gillian
- Date: 1992
- Subjects: Soil erosion -- South Africa Pineapple industry -- South Africa -- Eastern Cape Agriculture -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4827 , http://hdl.handle.net/10962/d1005502
- Description: The study examines the effect of ridged pineapple cultivation on factors influencing the soil erodibility of Glenrosa and Oakleaf soil forms in the Bathurst district of South Africa. A number of physical and chemical variables influencing soil erodibility are investigated, namely soil moisture, bulk density, porosity, infiltration rate, aggregate stability, shear strength, soil texture, soil structure, penetrability, organic carbon, pH and cation exchange capacity. These soil characteristics are examined in undisturbed soils under natural vegetation and compared to those on adjacent traffic areas, pineapple ridges and pineapple furrows. The results of the analyses between the four sample sites indicate that ridged cultivation of pineapples has a negative effect on factors influencing soil erodibility on the areas studied. The results of the analysis within each of the sample sites do not illustrate any clear relationships and thus depict the complexity and multiplicity of the soil erodibility phenomenon. A further study, augmenting the soil erodibility data with actual soil loss data, is recommended
- Full Text:
- Date Issued: 1992
Observing and describing textual "reality": a critique of the claims to objective reality and authentication in new critical and structuralist literary theory, seen against a background of Feyerabend's ideas concerning paradigms, dominance and ideology
- Authors: Masters, Kenneth Andrew
- Date: 1992
- Subjects: Feyerabend, Paul, 1924-1994 , Criticism , Structuralism (Literary analysis) , Science and the arts , Reality , Objectivity
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2247 , http://hdl.handle.net/10962/d1002290 , Feyerabend, Paul, 1924-1994 , Criticism , Structuralism (Literary analysis) , Science and the arts , Reality , Objectivity
- Description: This thesis sets out to examine the claims to objective reality and authentication in New critical and Structuralist literary theories, concentrating on their claims to "objectivity" and "scientific validity." It examines the nature of these claims in the light of the original ideas proposed by some of the major New critics and structuralists in the development of their respective "sciences" of literary theory. Taking direction from the nature of reality and objectivity shown by the theorists, the thesis then attempts an assessment of the validity of some of the original perceptions and presuppositions concerning scientific objectivity and reality. It proposes that inconsistencies within the literary theories resulted from the theorists' inability to grasp the complexity and fluctuating nature of the borrowed terminology and principles that they were using. It does so by taking a closer look at the development of some of the more influential physical theories and the philosophical ideas raised by these developments. It then uses Feyerabend's work on paradigms, dominance and ideology to attempt an assessment of the reasons for the literary theorists' perceptions and presuppositions regarding objectivity and reality. This amounts to accounting for the specific scientific models chosen as bases, and also to accounting for the desire for the "scientific approach" at all. Its conclusions give an indication of the extent to which these original errors contributed to the theories' necessary adaptations of perspective and eventual loss of influence, and emphasises the need for the total understanding of concepts in one field by researchers in other fields, especially if those concepts are to be used by the researchers with any degree of precision.
- Full Text:
- Date Issued: 1992
- Authors: Masters, Kenneth Andrew
- Date: 1992
- Subjects: Feyerabend, Paul, 1924-1994 , Criticism , Structuralism (Literary analysis) , Science and the arts , Reality , Objectivity
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2247 , http://hdl.handle.net/10962/d1002290 , Feyerabend, Paul, 1924-1994 , Criticism , Structuralism (Literary analysis) , Science and the arts , Reality , Objectivity
- Description: This thesis sets out to examine the claims to objective reality and authentication in New critical and Structuralist literary theories, concentrating on their claims to "objectivity" and "scientific validity." It examines the nature of these claims in the light of the original ideas proposed by some of the major New critics and structuralists in the development of their respective "sciences" of literary theory. Taking direction from the nature of reality and objectivity shown by the theorists, the thesis then attempts an assessment of the validity of some of the original perceptions and presuppositions concerning scientific objectivity and reality. It proposes that inconsistencies within the literary theories resulted from the theorists' inability to grasp the complexity and fluctuating nature of the borrowed terminology and principles that they were using. It does so by taking a closer look at the development of some of the more influential physical theories and the philosophical ideas raised by these developments. It then uses Feyerabend's work on paradigms, dominance and ideology to attempt an assessment of the reasons for the literary theorists' perceptions and presuppositions regarding objectivity and reality. This amounts to accounting for the specific scientific models chosen as bases, and also to accounting for the desire for the "scientific approach" at all. Its conclusions give an indication of the extent to which these original errors contributed to the theories' necessary adaptations of perspective and eventual loss of influence, and emphasises the need for the total understanding of concepts in one field by researchers in other fields, especially if those concepts are to be used by the researchers with any degree of precision.
- Full Text:
- Date Issued: 1992
Rhodes University Annual Report 1992
- Authors: Rhodes University
- Date: 1992
- Subjects: Rhodes University -- history Rhodes University -- employees Rhodes University -- students
- Language: English
- Identifier: vital:20040
- Full Text:
- Date Issued: 1992
- Authors: Rhodes University
- Date: 1992
- Subjects: Rhodes University -- history Rhodes University -- employees Rhodes University -- students
- Language: English
- Identifier: vital:20040
- Full Text:
- Date Issued: 1992
A critical analysis of problems encountered by senior secondary school pupils in the reading and interpretation of 1:50,000 topographical maps and aerial photographs with special reference to black pupils in Transkei
- Authors: Ndlwana, Monica
- Date: 1992
- Subjects: Maps -- Study and teaching (Secondary) Geography -- South Africa -- Transkei -- Study and teaching (Secondary) Black people -- Education -- South Africa -- Transkei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1470 , http://hdl.handle.net/10962/d1003351
- Description: Mapwork is an established part of the geography curriculum, and yet it poses particular problems for pupils and teachers. Maps participate in a complex system of graphic communication: the conceptual abstraction involved in the reading and interpretation of maps requires on the part of pupils a high degree of cognitive and perceptual development; teachers, too, often experience considerable difficulty in imparting the skills necessary for graphic literacy (graphicacy). The peculiar difficulties associated with map reading and the poor performance of pupils in this area have regrettably encouraged an attitude which dismisses mapwork as irrelevant or dispensable in geographical education. Yet graphicacy is essential not only in the learning of geography but in the overall cognitive development of the child, and therefore cannot be excluded from the curriculum. This study attempts to identify some of the specific difficulties experienced by pupils in their attempts to read and interpret maps, and to trace the origin of these difficulties. It argues that the complexity and sophistication of the skills necessary to interpret topographical maps and aerial photographs, for instance, should not be underestimated. Teachers need to be made aware of how pupils acquire map reading skills and of the problems they encounter during this process, so that teaching programmes commensurate with pupils' level of cognitive development can be formulated. It is also important that mapwork be taught in as practical a manner as possible. The findings and recommendations of this study have implications for geography teachers, textbook writers and educational authorities, especially those involved in curriculum and syllabus design.
- Full Text:
- Date Issued: 1992
- Authors: Ndlwana, Monica
- Date: 1992
- Subjects: Maps -- Study and teaching (Secondary) Geography -- South Africa -- Transkei -- Study and teaching (Secondary) Black people -- Education -- South Africa -- Transkei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1470 , http://hdl.handle.net/10962/d1003351
- Description: Mapwork is an established part of the geography curriculum, and yet it poses particular problems for pupils and teachers. Maps participate in a complex system of graphic communication: the conceptual abstraction involved in the reading and interpretation of maps requires on the part of pupils a high degree of cognitive and perceptual development; teachers, too, often experience considerable difficulty in imparting the skills necessary for graphic literacy (graphicacy). The peculiar difficulties associated with map reading and the poor performance of pupils in this area have regrettably encouraged an attitude which dismisses mapwork as irrelevant or dispensable in geographical education. Yet graphicacy is essential not only in the learning of geography but in the overall cognitive development of the child, and therefore cannot be excluded from the curriculum. This study attempts to identify some of the specific difficulties experienced by pupils in their attempts to read and interpret maps, and to trace the origin of these difficulties. It argues that the complexity and sophistication of the skills necessary to interpret topographical maps and aerial photographs, for instance, should not be underestimated. Teachers need to be made aware of how pupils acquire map reading skills and of the problems they encounter during this process, so that teaching programmes commensurate with pupils' level of cognitive development can be formulated. It is also important that mapwork be taught in as practical a manner as possible. The findings and recommendations of this study have implications for geography teachers, textbook writers and educational authorities, especially those involved in curriculum and syllabus design.
- Full Text:
- Date Issued: 1992
Ngalanga 5th movement
- Venancio Mbande and his Timbila players, Tracey, Andrew T N
- Authors: Venancio Mbande and his Timbila players , Tracey, Andrew T N
- Date: 1992
- Subjects: Chopi (African people) -- Music , Folk music -- South Africa , Xylophone (Musical instrument) , Drum (Musical instruments) , Sub-Saharan African music , Africa South Africa Wildebeesfontein f-za
- Language: Chopi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/98903 , vital:31641 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-05
- Description: Traditional Ngalanga dance song for young people with 3 Timbila xylophone and 3 drums accompaniment
- Full Text: false
- Date Issued: 1992
- Authors: Venancio Mbande and his Timbila players , Tracey, Andrew T N
- Date: 1992
- Subjects: Chopi (African people) -- Music , Folk music -- South Africa , Xylophone (Musical instrument) , Drum (Musical instruments) , Sub-Saharan African music , Africa South Africa Wildebeesfontein f-za
- Language: Chopi
- Type: sound recordings , field recordings , sound recording-musical
- Identifier: http://hdl.handle.net/10962/98903 , vital:31641 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-05
- Description: Traditional Ngalanga dance song for young people with 3 Timbila xylophone and 3 drums accompaniment
- Full Text: false
- Date Issued: 1992
The "Big E": the English (first language) endorsement on the teacher's bilingualism certificate: an investigation into the background to and origin of this requirement, an evaluation of past and current examining practices and standards and criteria, a needs assessment, and suggestions and recommendations for sound practice
- Authors: Spingies, Conrad
- Date: 1992
- Subjects: Teachers -- Training of -- South Africa Teachers -- Selection and appointment Teachers -- Language Teachers -- Certification -- South Africa Bilingualism -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1427 , http://hdl.handle.net/10962/d1003308
- Description: South African education authorities demand of teachers a high degree of competency in both official languages. In the Cape Province in particular, teachers are not considered eligible for promotion posts unless they possess the so-called Higher Bilingualism Certificate, signifying their command of both official languages at "First Language" level. In view of the fact that the overwhelming majority of schools nowadays are single-medium institutions; this requirement may strike the objective observer as an anomaly. An attempt was made, therefore, first of all to investigate the historical background to this requirement. The "language question", a problematic feature of South African education since the beginning of the nineteenth.century, was not resolved when legislators chose "bilingualism and language equality" for the Union of South Africa in 1910. The available evidence suggests, however, that bilingualism was actively pursued as an educational ideal at least until the end of the 1940s, and for this reason education authorities placed a high premium on teachers who were "fully bilingual". Nowadays the typical (White) school is a single-medium institution where the second language is rarely if ever heard outside the classroom where it is taught as a subject. The present policy, to demand a high degree of proficiency in both official languages of teachers occupying promotion posts at such a school, may then be described not only as an anomaly, but as an anachronism. A further problem is the fact that the various educational institutions (specifically teachers' colleges and universities) that set examinations leading to the Higher Bilingualism Certificate rarely communicate with one another, and are therefore unable to agree on uniform standards and criteria, or to ensure that such standards are maintained. That this is indeed the case, was confirmed by examination of "Big E" test papers set at three teachers' colleges, two Colleges for Continued Training, and four universities in the Cape Province. In an attempt to establish what assistance and support might be needed by a "second language" user of English in order for him to improve to the point where he resembled a "first language" user of English in his "terminal language behaviour", a comparison (by means of error analysis) of the responses of two groups (an Ll and an L2 group) to the same test paper was undertaken. The available evidence suggests that L2 users may need to be helped to acquire a more extensive vocabulary, but, above all, that they need to improve their ability to handle two crucially important aspects of usage: idiom and grammar. The final chapter attempts to establish pedagogic and linguistic bases for a course intended for "Big E" candidates, and makes recommendations with regard to (i) the content and the form of the course, and (ii) sound examination practice. The concluding thoughts offer the view that such a course could remain useful even in a future South Africa where the emphasis may shift from a demand for teachers who are "fully bilingual" to teachers who have a good command of English.
- Full Text:
- Date Issued: 1992
- Authors: Spingies, Conrad
- Date: 1992
- Subjects: Teachers -- Training of -- South Africa Teachers -- Selection and appointment Teachers -- Language Teachers -- Certification -- South Africa Bilingualism -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1427 , http://hdl.handle.net/10962/d1003308
- Description: South African education authorities demand of teachers a high degree of competency in both official languages. In the Cape Province in particular, teachers are not considered eligible for promotion posts unless they possess the so-called Higher Bilingualism Certificate, signifying their command of both official languages at "First Language" level. In view of the fact that the overwhelming majority of schools nowadays are single-medium institutions; this requirement may strike the objective observer as an anomaly. An attempt was made, therefore, first of all to investigate the historical background to this requirement. The "language question", a problematic feature of South African education since the beginning of the nineteenth.century, was not resolved when legislators chose "bilingualism and language equality" for the Union of South Africa in 1910. The available evidence suggests, however, that bilingualism was actively pursued as an educational ideal at least until the end of the 1940s, and for this reason education authorities placed a high premium on teachers who were "fully bilingual". Nowadays the typical (White) school is a single-medium institution where the second language is rarely if ever heard outside the classroom where it is taught as a subject. The present policy, to demand a high degree of proficiency in both official languages of teachers occupying promotion posts at such a school, may then be described not only as an anomaly, but as an anachronism. A further problem is the fact that the various educational institutions (specifically teachers' colleges and universities) that set examinations leading to the Higher Bilingualism Certificate rarely communicate with one another, and are therefore unable to agree on uniform standards and criteria, or to ensure that such standards are maintained. That this is indeed the case, was confirmed by examination of "Big E" test papers set at three teachers' colleges, two Colleges for Continued Training, and four universities in the Cape Province. In an attempt to establish what assistance and support might be needed by a "second language" user of English in order for him to improve to the point where he resembled a "first language" user of English in his "terminal language behaviour", a comparison (by means of error analysis) of the responses of two groups (an Ll and an L2 group) to the same test paper was undertaken. The available evidence suggests that L2 users may need to be helped to acquire a more extensive vocabulary, but, above all, that they need to improve their ability to handle two crucially important aspects of usage: idiom and grammar. The final chapter attempts to establish pedagogic and linguistic bases for a course intended for "Big E" candidates, and makes recommendations with regard to (i) the content and the form of the course, and (ii) sound examination practice. The concluding thoughts offer the view that such a course could remain useful even in a future South Africa where the emphasis may shift from a demand for teachers who are "fully bilingual" to teachers who have a good command of English.
- Full Text:
- Date Issued: 1992
Phase equilibria in three component systems alcohol-hydrocarbon-water
- Authors: Siswana, Msimelelo Patrick
- Date: 1992
- Subjects: Chemical equilibrium , Liquid-liquid equilibrium , Alcohol as fuel , Hydrocarbons , Water chemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4327 , http://hdl.handle.net/10962/d1004988 , Chemical equilibrium , Liquid-liquid equilibrium , Alcohol as fuel , Hydrocarbons , Water chemistry
- Description: The fuel industry in many parts of the world is blending alcohols with motor fuel either to extend the fuel or to improve its octane rating or both. Unfortunately alcohols are hygroscopic and as a result, water becomes a component of the fuel. This can lead to phase separation and the formation of a water-rich layer which could have serious corrosion consequences. In an attempt to understand the phase-splitting in alcohol-petrol-water blends, phase equilibria in ternary systems (alcohol-hydrocarbon-water) have been determined by experiment. The phase equilibria in these ternary systems are also discussed in terms of modern theories of liquid mixtures and the UNIQUAC theory is applied to the "ethanol + benzene + water" ternary system. The alcohols are all the C₁, C₂, C₃ and C₄ alcohols, and the hydrocarbons include those typically found in petrol, e.g. cyclohexane, benzene and substituted benzenes.
- Full Text:
- Date Issued: 1992
- Authors: Siswana, Msimelelo Patrick
- Date: 1992
- Subjects: Chemical equilibrium , Liquid-liquid equilibrium , Alcohol as fuel , Hydrocarbons , Water chemistry
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4327 , http://hdl.handle.net/10962/d1004988 , Chemical equilibrium , Liquid-liquid equilibrium , Alcohol as fuel , Hydrocarbons , Water chemistry
- Description: The fuel industry in many parts of the world is blending alcohols with motor fuel either to extend the fuel or to improve its octane rating or both. Unfortunately alcohols are hygroscopic and as a result, water becomes a component of the fuel. This can lead to phase separation and the formation of a water-rich layer which could have serious corrosion consequences. In an attempt to understand the phase-splitting in alcohol-petrol-water blends, phase equilibria in ternary systems (alcohol-hydrocarbon-water) have been determined by experiment. The phase equilibria in these ternary systems are also discussed in terms of modern theories of liquid mixtures and the UNIQUAC theory is applied to the "ethanol + benzene + water" ternary system. The alcohols are all the C₁, C₂, C₃ and C₄ alcohols, and the hydrocarbons include those typically found in petrol, e.g. cyclohexane, benzene and substituted benzenes.
- Full Text:
- Date Issued: 1992
Industrial social work : an exploration and an assessment of the practice of social work in industry in South Africa
- Authors: Rankin, Pedro
- Date: 1992
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3279 , http://hdl.handle.net/10962/d1006474
- Description: Industries in South Africa have been employing social workers in increasing numbers during the last decade, and in several of the bigger industries social work seem to have succeeded in establishing itself over the course of time. Certain forces seem to be operating in both industry and social work which could facilitate the introduction and development of industrial social work as a specialised field of practice in South Africa. Very significant variables in this regard are a rapidly changing labour force, and certain socio-political developments in South Africa, that took place especially during the last decade, and in particular during the past two years. A lack of knowledge about the practice of social work in industry exists in South Africa, mainly as a result of a general lack of empirical research into this field. The main purpose of this research project was to add to the knowledge about the nature of industrial social work practice in South Africa, and to contribute to an understanding of the forces influencing its development. In order to achieve this overall purpose, an extensive review of the existing literature was done with the aim of identifying and describing the present trends and issues in industrial social work thinking. This was combined with an empirical investigation into the practice of social workers presently employed in industry in South Africa. In addition to this, the attitude of industries not employing social workers was established with a view of determining factors influencing the further development of industrial social work. A third component of the empirical investigation consisted of a survey of the attitudes and knowledge of community welfare organisations regarding industrial social work practice. This was done in an effort to establish the amount of support for industrial social work from the rest of the profession. The findings of the empirical investigation indicated an emphasis on the individual employee as far as the practice of industrial social work is concerned - an EAP model thus. Industries not employing social workers still seem to need more education as far as the true nature of social work practice is concerned, and there seem to be a reserved acceptance of industrial social work practice amongst community welfare organisations, as well as a lack of knowledge. In conclusion it can be stated that the social work fraternity in South Africa should take more serious notice of occupational social work practice in South Africa in general, and of industrial social work practice in particular, mainly because of its importance to the worker.
- Full Text:
- Date Issued: 1992
- Authors: Rankin, Pedro
- Date: 1992
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3279 , http://hdl.handle.net/10962/d1006474
- Description: Industries in South Africa have been employing social workers in increasing numbers during the last decade, and in several of the bigger industries social work seem to have succeeded in establishing itself over the course of time. Certain forces seem to be operating in both industry and social work which could facilitate the introduction and development of industrial social work as a specialised field of practice in South Africa. Very significant variables in this regard are a rapidly changing labour force, and certain socio-political developments in South Africa, that took place especially during the last decade, and in particular during the past two years. A lack of knowledge about the practice of social work in industry exists in South Africa, mainly as a result of a general lack of empirical research into this field. The main purpose of this research project was to add to the knowledge about the nature of industrial social work practice in South Africa, and to contribute to an understanding of the forces influencing its development. In order to achieve this overall purpose, an extensive review of the existing literature was done with the aim of identifying and describing the present trends and issues in industrial social work thinking. This was combined with an empirical investigation into the practice of social workers presently employed in industry in South Africa. In addition to this, the attitude of industries not employing social workers was established with a view of determining factors influencing the further development of industrial social work. A third component of the empirical investigation consisted of a survey of the attitudes and knowledge of community welfare organisations regarding industrial social work practice. This was done in an effort to establish the amount of support for industrial social work from the rest of the profession. The findings of the empirical investigation indicated an emphasis on the individual employee as far as the practice of industrial social work is concerned - an EAP model thus. Industries not employing social workers still seem to need more education as far as the true nature of social work practice is concerned, and there seem to be a reserved acceptance of industrial social work practice amongst community welfare organisations, as well as a lack of knowledge. In conclusion it can be stated that the social work fraternity in South Africa should take more serious notice of occupational social work practice in South Africa in general, and of industrial social work practice in particular, mainly because of its importance to the worker.
- Full Text:
- Date Issued: 1992
Small-scale gold mining in southern Africa
- Authors: Joubert, Barend Daniel
- Date: 1992
- Subjects: Gold mines and mining -- South Africa , Abandoned mines , Abandoned mines -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5002 , http://hdl.handle.net/10962/d1005615 , Gold mines and mining -- South Africa , Abandoned mines , Abandoned mines -- South Africa
- Description: The general characteristics of gold deposits are reviewed, and a classification of gold deposits based on mineability is proposed. Evaluation, mlnlng and beneficiation methods are briefly discussed. It is concluded that the most viable targets for small-scale companies comprise deposits that require the least pre-production time and expense. Great potential exists for the small-scale reclamation of gold from tailings dumps and abandoned mines in Southern Africa. There is also potential for developing new smallscale gold mines in the Archaean greenstone terranes of the Zimbabwean and Kaapvaal cratons.
- Full Text:
- Date Issued: 1992
- Authors: Joubert, Barend Daniel
- Date: 1992
- Subjects: Gold mines and mining -- South Africa , Abandoned mines , Abandoned mines -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5002 , http://hdl.handle.net/10962/d1005615 , Gold mines and mining -- South Africa , Abandoned mines , Abandoned mines -- South Africa
- Description: The general characteristics of gold deposits are reviewed, and a classification of gold deposits based on mineability is proposed. Evaluation, mlnlng and beneficiation methods are briefly discussed. It is concluded that the most viable targets for small-scale companies comprise deposits that require the least pre-production time and expense. Great potential exists for the small-scale reclamation of gold from tailings dumps and abandoned mines in Southern Africa. There is also potential for developing new smallscale gold mines in the Archaean greenstone terranes of the Zimbabwean and Kaapvaal cratons.
- Full Text:
- Date Issued: 1992
The exploration for and possible genesis of, some Archaean granite/gneiss-hosted gold deposits in the Pietersburg granite-greenstone terrane
- Linklater, Michael Anthony Leonard Flanders
- Authors: Linklater, Michael Anthony Leonard Flanders
- Date: 1992
- Subjects: Gold ores -- Geology -- South Africa , Gneiss , Granite
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4945 , http://hdl.handle.net/10962/d1005557 , Gold ores -- Geology -- South Africa , Gneiss , Granite
- Description: Abstract The gold mineralization event within Archaean granite-greenstone terranes occurred during the late Archaean, and followed the intrusion of syn- to late-tectonic granitic plutons into previously deformed greenstone belts. An Archaean granite/gneiss-hosted gold deposit, in terms of this project, is classified as having a gold-assay cutoff of 1g/metric ton over widths of at least several metres, or higher grades over narrower widths and/or verbal descriptions that indicate such values. Fluid inclusion studies and isotopic data identify two possible origins for the auriferous fluids; namely magmatic and metamorphic. The exploration target according to the magmatic model, is a late-Archaean, hydrothermally altered, mineralized and fractured granitic intrusion preferably with a granodioritic or quartz-dioritic composition. The exploration target according to the metamorphic replacement model is a granitic stock that has intruded a zone of crustal weakness such as a shear zone, active during the late Archaean. Alternatively, the granitic intrusion should be affected by regionally extensive late-Archaean shearing. It should be hydrothermally altered, deformed and mineralized. Five areas within the Pietersburg granite-greenstone terrane were selected for the 'Regional Area Selection' phase of exploration for Archaean granite/gneiss-hosted gold deposits; namely Roodepoort, Waterval, Ramagoep, Moletsie and Matlala. Roodepoort contains a known granodiorite-hosted gold deposit; the Knight's Pluton, and served as an orientation survey for this project. The use and interpretation of LANDSAT images formed an integral part of exploration techniques; to assess their usefulness in the exploration of Archaean granite/gneiss-hosted gold deposits. Area selection criteria for granite/gneiss-hosted gold mineralization at Roodepoort are the major ENE-trending shear zone, the NNW-trending lineament and hydrothermal alteration, shearing, quartz-stockworks and sulphide mineralization within the Knight's Pluton. The origin of the gold within the Knight's Pluton is uncertain; both magmatic and metamorphic models are possibilities. Ongoing exploration is in progress at Roodepoort. The only area selection criterion for granite/gneiss-hosted gold mineralization at Waterval is the sericitized, subcropping granites located within trenches. Gold mineralization is insignificant. No area selection criteria for Archaean granite/gneiss-hosted gold mineralization were located at Ramagoep, Matlala and Moletsie. No further exploration is recommended for all these areas. The MES image interpretations were successful in identifying lineaments, granitic outcrops, greenstones, vegetation and soil cover. The Clay-iron images adequately differentiated betweeen iron-rich and clay-bearing areas. However, not all clay-bearing areas were associated with hydrothermal alteratian; field checks were necessary to discriminate between weathered granites and hydrothermally altered granites. The Wallis images served to locally enhance the contrasts of the MES and Clay-iron images.
- Full Text:
- Date Issued: 1992
- Authors: Linklater, Michael Anthony Leonard Flanders
- Date: 1992
- Subjects: Gold ores -- Geology -- South Africa , Gneiss , Granite
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4945 , http://hdl.handle.net/10962/d1005557 , Gold ores -- Geology -- South Africa , Gneiss , Granite
- Description: Abstract The gold mineralization event within Archaean granite-greenstone terranes occurred during the late Archaean, and followed the intrusion of syn- to late-tectonic granitic plutons into previously deformed greenstone belts. An Archaean granite/gneiss-hosted gold deposit, in terms of this project, is classified as having a gold-assay cutoff of 1g/metric ton over widths of at least several metres, or higher grades over narrower widths and/or verbal descriptions that indicate such values. Fluid inclusion studies and isotopic data identify two possible origins for the auriferous fluids; namely magmatic and metamorphic. The exploration target according to the magmatic model, is a late-Archaean, hydrothermally altered, mineralized and fractured granitic intrusion preferably with a granodioritic or quartz-dioritic composition. The exploration target according to the metamorphic replacement model is a granitic stock that has intruded a zone of crustal weakness such as a shear zone, active during the late Archaean. Alternatively, the granitic intrusion should be affected by regionally extensive late-Archaean shearing. It should be hydrothermally altered, deformed and mineralized. Five areas within the Pietersburg granite-greenstone terrane were selected for the 'Regional Area Selection' phase of exploration for Archaean granite/gneiss-hosted gold deposits; namely Roodepoort, Waterval, Ramagoep, Moletsie and Matlala. Roodepoort contains a known granodiorite-hosted gold deposit; the Knight's Pluton, and served as an orientation survey for this project. The use and interpretation of LANDSAT images formed an integral part of exploration techniques; to assess their usefulness in the exploration of Archaean granite/gneiss-hosted gold deposits. Area selection criteria for granite/gneiss-hosted gold mineralization at Roodepoort are the major ENE-trending shear zone, the NNW-trending lineament and hydrothermal alteration, shearing, quartz-stockworks and sulphide mineralization within the Knight's Pluton. The origin of the gold within the Knight's Pluton is uncertain; both magmatic and metamorphic models are possibilities. Ongoing exploration is in progress at Roodepoort. The only area selection criterion for granite/gneiss-hosted gold mineralization at Waterval is the sericitized, subcropping granites located within trenches. Gold mineralization is insignificant. No area selection criteria for Archaean granite/gneiss-hosted gold mineralization were located at Ramagoep, Matlala and Moletsie. No further exploration is recommended for all these areas. The MES image interpretations were successful in identifying lineaments, granitic outcrops, greenstones, vegetation and soil cover. The Clay-iron images adequately differentiated betweeen iron-rich and clay-bearing areas. However, not all clay-bearing areas were associated with hydrothermal alteratian; field checks were necessary to discriminate between weathered granites and hydrothermally altered granites. The Wallis images served to locally enhance the contrasts of the MES and Clay-iron images.
- Full Text:
- Date Issued: 1992
"Constructive critic" or "donor agency": does the World Bank have a role to play in sub-Saharan Africa's development beyond that of providing economic aid?
- Authors: Thompson, Christine Audra
- Date: 1992
- Subjects: Africa, Sub-Saharan -- Economic conditions -- 20th century , World Bank -- Africa, Sub-Saharan , Africa, Sub-Saharan -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2835 , http://hdl.handle.net/10962/d1003045 , Africa, Sub-Saharan -- Economic conditions -- 20th century , World Bank -- Africa, Sub-Saharan , Africa, Sub-Saharan -- Economic conditions
- Description: This thesis attempts to evaluate the role of the World Bank in Sub-Saharan Africa's development. It argues that the World Bank has stepped beyond the boundaries of a typical lending institution by linking its aid to political reform. The study argues that in this capacity the Bank has contributed to the halting democratization process currently underway in Africa. The economic effects of the World Bank's Structural Adjustment Programmes have been less successful. As yet, the programmes have not produced the expected results and there is no evidence of long-term, sustainable economic recovery in Sub-Saharan Africa. These programmes are, however, long-term strategies and it may therefore be too premature to reach a final conclusion. They may also have been affected negatively by unfavourable political environments. This study, noting the negative effects of the international terms of trade and prices for African exports, concludes that although economic recovery in Sub-Saharan Africa will be facilitated by domestic political and economic policy reform, there is also a need for reform of the international economic order. The World Bank has correctly identified the need for domestic improvement, but it has a tendency to disregard the negative consequences of the existing structure of the international economy.
- Full Text:
- Date Issued: 1992
- Authors: Thompson, Christine Audra
- Date: 1992
- Subjects: Africa, Sub-Saharan -- Economic conditions -- 20th century , World Bank -- Africa, Sub-Saharan , Africa, Sub-Saharan -- Economic conditions
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2835 , http://hdl.handle.net/10962/d1003045 , Africa, Sub-Saharan -- Economic conditions -- 20th century , World Bank -- Africa, Sub-Saharan , Africa, Sub-Saharan -- Economic conditions
- Description: This thesis attempts to evaluate the role of the World Bank in Sub-Saharan Africa's development. It argues that the World Bank has stepped beyond the boundaries of a typical lending institution by linking its aid to political reform. The study argues that in this capacity the Bank has contributed to the halting democratization process currently underway in Africa. The economic effects of the World Bank's Structural Adjustment Programmes have been less successful. As yet, the programmes have not produced the expected results and there is no evidence of long-term, sustainable economic recovery in Sub-Saharan Africa. These programmes are, however, long-term strategies and it may therefore be too premature to reach a final conclusion. They may also have been affected negatively by unfavourable political environments. This study, noting the negative effects of the international terms of trade and prices for African exports, concludes that although economic recovery in Sub-Saharan Africa will be facilitated by domestic political and economic policy reform, there is also a need for reform of the international economic order. The World Bank has correctly identified the need for domestic improvement, but it has a tendency to disregard the negative consequences of the existing structure of the international economy.
- Full Text:
- Date Issued: 1992
Complete regularity and related concepts in L-uniform spaces
- Authors: Harnett, Rait Sicklen
- Date: 1992
- Subjects: Uniform spaces , Mathematics -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5403 , http://hdl.handle.net/10962/d1005217 , Uniform spaces , Mathematics -- Research
- Description: L will denote a completely distributive lattice with an order reversing involution. The concept of an L-uniform space is introduced. An extension theorem concerning L-uniformly continuous functions is proved. A characterisation of L-uniformizability, involving L-complete regularity is given. With respect to L--completely regular spaces it is shown that the topological modification of an L-completely regular space is completely regular. Furthermore it is shown that the topologically generated L-topology of a completely regular space is L-completely regular.
- Full Text:
- Date Issued: 1992
- Authors: Harnett, Rait Sicklen
- Date: 1992
- Subjects: Uniform spaces , Mathematics -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5403 , http://hdl.handle.net/10962/d1005217 , Uniform spaces , Mathematics -- Research
- Description: L will denote a completely distributive lattice with an order reversing involution. The concept of an L-uniform space is introduced. An extension theorem concerning L-uniformly continuous functions is proved. A characterisation of L-uniformizability, involving L-complete regularity is given. With respect to L--completely regular spaces it is shown that the topological modification of an L-completely regular space is completely regular. Furthermore it is shown that the topologically generated L-topology of a completely regular space is L-completely regular.
- Full Text:
- Date Issued: 1992