Writing left: Ruth First and radical South African journalism in the 1950's
- Authors: Pinnock, Don
- Date: 1992
- Subjects: First, Ruth, 1925-1982 Journalism -- Political aspects -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2822 , http://hdl.handle.net/10962/d1003032
- Description: In a prison cell in Johannesburg in 1953 after months of solitary confinement Ruth First, one of South Africa's finest investigative joumalists, attempted to commit suicide. In a sense, information for this thesis has been gathered around the question of why First felt her life had reached a point where she wished it extinguished. The answer involves who she was, what she believed in and her perception at that moment in time of the magnitude of the defeat of all she had worked for. But this question has broader implications - it has been asked because its answer throws light not only on the particular joumalist, but on the radical press and on the political movements which gave it both life and readers. This study is divided into six sections: Origins and influences looks, firstly, at early Jewish migrations and Ruth's life up to the end of her schooling in Johannesburg, then at her university years and the influence on her life of the Communist Party of South Africa. A vigorously provocative life traces debates which led to the formation of the South African Congress of Democrats and the Congress Alliance. It looks, also, at the political influence of the white Left and the radical social fratemity. Trumpeters of freedom locates the origins of the radical press tradition in South Africa, then looks at the development of the two publications to which Ruth devoted most of her time: The Guardian/New Age and Fighting Talk. Writing left focuses on First's writing in connection with three campaigns: the farm labour and the potato boycott, womens' passes and the bus boycotts. These chapters are not a history of these campaigns, but an analysis of the influence on them of First's joumalism. Word wars is about the Treason Trial of 1956. The contention here is that the trial, in which First was one of the 'chief co-conspirators ', not only put the Congress Alliance in the dock, but was about the definition of three words: communism, violence and treason. In many ways it was a trial of the language of the Left, the tools of First's trade. Shifting focus looks at the period after Sharpeville and the 1960 State of Emergency. It considers the shift in First's writing necessitated by greater political oppression, a banning order and her exploration of the writing of books. Chapter 12 considers the massive setback to the Congress Alliance of the Rivonia Trial and the tactical errors which led the Congress leadership to the conclusion that armed struggle would succeed at that point in time. The final chapter is about First's detention, and her perceived personal defeat which resulted in her attempted suicide. The Postscript looks at First's successful attempts to come to terms with both a political and personal defeat. The work effectively ends, however, with her departure from South Africa.
- Full Text:
- Date Issued: 1992
- Authors: Pinnock, Don
- Date: 1992
- Subjects: First, Ruth, 1925-1982 Journalism -- Political aspects -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2822 , http://hdl.handle.net/10962/d1003032
- Description: In a prison cell in Johannesburg in 1953 after months of solitary confinement Ruth First, one of South Africa's finest investigative joumalists, attempted to commit suicide. In a sense, information for this thesis has been gathered around the question of why First felt her life had reached a point where she wished it extinguished. The answer involves who she was, what she believed in and her perception at that moment in time of the magnitude of the defeat of all she had worked for. But this question has broader implications - it has been asked because its answer throws light not only on the particular joumalist, but on the radical press and on the political movements which gave it both life and readers. This study is divided into six sections: Origins and influences looks, firstly, at early Jewish migrations and Ruth's life up to the end of her schooling in Johannesburg, then at her university years and the influence on her life of the Communist Party of South Africa. A vigorously provocative life traces debates which led to the formation of the South African Congress of Democrats and the Congress Alliance. It looks, also, at the political influence of the white Left and the radical social fratemity. Trumpeters of freedom locates the origins of the radical press tradition in South Africa, then looks at the development of the two publications to which Ruth devoted most of her time: The Guardian/New Age and Fighting Talk. Writing left focuses on First's writing in connection with three campaigns: the farm labour and the potato boycott, womens' passes and the bus boycotts. These chapters are not a history of these campaigns, but an analysis of the influence on them of First's joumalism. Word wars is about the Treason Trial of 1956. The contention here is that the trial, in which First was one of the 'chief co-conspirators ', not only put the Congress Alliance in the dock, but was about the definition of three words: communism, violence and treason. In many ways it was a trial of the language of the Left, the tools of First's trade. Shifting focus looks at the period after Sharpeville and the 1960 State of Emergency. It considers the shift in First's writing necessitated by greater political oppression, a banning order and her exploration of the writing of books. Chapter 12 considers the massive setback to the Congress Alliance of the Rivonia Trial and the tactical errors which led the Congress leadership to the conclusion that armed struggle would succeed at that point in time. The final chapter is about First's detention, and her perceived personal defeat which resulted in her attempted suicide. The Postscript looks at First's successful attempts to come to terms with both a political and personal defeat. The work effectively ends, however, with her departure from South Africa.
- Full Text:
- Date Issued: 1992
Ngalanga 3rd 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/10962/98877 , vital:31637 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-03
- 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/10962/98877 , vital:31637 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-03
- Description: Traditional Ngalanga dance song for young people with 3 Timbila xylophone and 3 drums accompaniment
- Full Text: false
- Date Issued: 1992
Isiyeye sabaThembu
- Date: 1955-01-10 , 2023-09-01
- Subjects: Beadwork , Necklace
- Language: English
- Type: realia , Personal adornment
- Identifier: http://hdl.handle.net/11260/8686 , vital:68084
- Description: Isiyeye sabaThembu,A white bead strip with two navy lines and trees. Fringed with pink and green beads and a pearl button, pink denotes old age among the Thembu and green denotes a wish for new life or wealth, Ornately tasseled in bead streamers of navy, white and pink, Worn by adult men and women, The beaded necklace forms part of the beadwork collection that was acquired from Mrs Broster in 1992. , Purchased from Mrs Joan Broster , Forms part of: Walter Sisulu University Beadwork Collection
- Full Text: false
- Date Issued: 1955-01-10
- Date: 1955-01-10 , 2023-09-01
- Subjects: Beadwork , Necklace
- Language: English
- Type: realia , Personal adornment
- Identifier: http://hdl.handle.net/11260/8686 , vital:68084
- Description: Isiyeye sabaThembu,A white bead strip with two navy lines and trees. Fringed with pink and green beads and a pearl button, pink denotes old age among the Thembu and green denotes a wish for new life or wealth, Ornately tasseled in bead streamers of navy, white and pink, Worn by adult men and women, The beaded necklace forms part of the beadwork collection that was acquired from Mrs Broster in 1992. , Purchased from Mrs Joan Broster , Forms part of: Walter Sisulu University Beadwork Collection
- Full Text: false
- Date Issued: 1955-01-10
Images of a changing frontier worldview in Eastern Cape art from Bushman rock art to 1875
- Authors: Cosser, Marijke
- Date: 1992
- Subjects: Art, San , Rock paintings -- South Africa , Art, South African -- 19th century , Art -- South Africa -- History , Painters -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2400 , http://hdl.handle.net/10962/d1002196 , Art, San , Rock paintings -- South Africa , Art, South African -- 19th century , Art -- South Africa -- History , Painters -- South Africa
- Description: A discussion of the concept of worldview shows that how an artist conceives the world in his images is governed by his worldview - an amalgam of the worldview of the group of which he is a part modified by his own ideas, beliefs, attitudes, perceptions and upbringing. The author proposes that studying an artist's work can reveal his, and hence his group's, worldview and thus the attitudes prevalent when the work was produced. A brief historical sketch of the Eastern Cape to 1834 introduces the various settlers in the area. Though no known examples of Black, Boer or Khoi pictorial art are extant, both the Bushmen and the British left such records. A short analysis of rock art shows how the worldview of the Bushman is inherent in their images which reflect man's world as seen with the "inner" eye of the spirit. In white settler art, the author submits that spatial relationships changed in response to a growing confidence as the "savage" land was "civilised" and that the position, pose and size of figures - and the inclusion or exclusion of certain groups - reflect socio-political changes. The two foremost nineteenth-century Eastern Cape artists, Thomas Baines and Frederick I'Ons, succeeded in capturing the atmosphere of Frontier life but are shown to interpret their surroundings through the rose-tinted spectacles of British Romanticism. They also reveal individuality in approach - Baines preferring expansive views while I'Ons's landscapes tend to be "closed-in", strictly following the coulisse scheme of Picturesque painting. Perhaps, the author postulates, such differences result from the very different environments, i.e. Norfolk and London, in which the two grew up. I'Ons is shown typically to use generalised landscapes as backdrops for his foreground figures, while comparing Baines's scenes with modern photographs shows that he adjusted the spacial elements of the topography as well as the temporal sequence of events to suit aesthetic considerations. Lithographed reports of his work contain even further adjustments. The author concludes that the use of Africana art as historical records must be treated with great caution.
- Full Text:
- Date Issued: 1992
- Authors: Cosser, Marijke
- Date: 1992
- Subjects: Art, San , Rock paintings -- South Africa , Art, South African -- 19th century , Art -- South Africa -- History , Painters -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2400 , http://hdl.handle.net/10962/d1002196 , Art, San , Rock paintings -- South Africa , Art, South African -- 19th century , Art -- South Africa -- History , Painters -- South Africa
- Description: A discussion of the concept of worldview shows that how an artist conceives the world in his images is governed by his worldview - an amalgam of the worldview of the group of which he is a part modified by his own ideas, beliefs, attitudes, perceptions and upbringing. The author proposes that studying an artist's work can reveal his, and hence his group's, worldview and thus the attitudes prevalent when the work was produced. A brief historical sketch of the Eastern Cape to 1834 introduces the various settlers in the area. Though no known examples of Black, Boer or Khoi pictorial art are extant, both the Bushmen and the British left such records. A short analysis of rock art shows how the worldview of the Bushman is inherent in their images which reflect man's world as seen with the "inner" eye of the spirit. In white settler art, the author submits that spatial relationships changed in response to a growing confidence as the "savage" land was "civilised" and that the position, pose and size of figures - and the inclusion or exclusion of certain groups - reflect socio-political changes. The two foremost nineteenth-century Eastern Cape artists, Thomas Baines and Frederick I'Ons, succeeded in capturing the atmosphere of Frontier life but are shown to interpret their surroundings through the rose-tinted spectacles of British Romanticism. They also reveal individuality in approach - Baines preferring expansive views while I'Ons's landscapes tend to be "closed-in", strictly following the coulisse scheme of Picturesque painting. Perhaps, the author postulates, such differences result from the very different environments, i.e. Norfolk and London, in which the two grew up. I'Ons is shown typically to use generalised landscapes as backdrops for his foreground figures, while comparing Baines's scenes with modern photographs shows that he adjusted the spacial elements of the topography as well as the temporal sequence of events to suit aesthetic considerations. Lithographed reports of his work contain even further adjustments. The author concludes that the use of Africana art as historical records must be treated with great caution.
- Full Text:
- Date Issued: 1992
The exploitation of methane from landfill
- Authors: Schütte, Renate
- Date: 1992
- Subjects: Methane , Waste products as fuel , Refuse as fuel , Sanitary landfills -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4530 , http://hdl.handle.net/10962/d1015949
- Description: A review of literature on the subject of methane exploitation from landfill is presented in conjunction with the results of experiments concerning landfill gas extraction at the Grahamstown Landfill Site. A description of the LFG extraction system and the utilisation of LFG at the Grahamstown Landfill Site is included. Data concerning LFG enhancement parameters, LFG compositions and flow rates, refuse composition, LFG modelling, LFG pumping trials and the economics of LFG extraction and utilisation are presented. The indication is that LFG can be economically extracted and utilised as a heating fuel in South Africa.
- Full Text:
- Date Issued: 1992
- Authors: Schütte, Renate
- Date: 1992
- Subjects: Methane , Waste products as fuel , Refuse as fuel , Sanitary landfills -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4530 , http://hdl.handle.net/10962/d1015949
- Description: A review of literature on the subject of methane exploitation from landfill is presented in conjunction with the results of experiments concerning landfill gas extraction at the Grahamstown Landfill Site. A description of the LFG extraction system and the utilisation of LFG at the Grahamstown Landfill Site is included. Data concerning LFG enhancement parameters, LFG compositions and flow rates, refuse composition, LFG modelling, LFG pumping trials and the economics of LFG extraction and utilisation are presented. The indication is that LFG can be economically extracted and utilised as a heating fuel in South Africa.
- Full Text:
- Date Issued: 1992
The role of the queen in wax secretion and comb building in the Cape honeybee, Aps mellifera capensis (Escholtz)
- Authors: Whiffler, Lynne Anne
- Date: 1992
- Subjects: Honeybee Honey, Comb Beeswax Bee culture -- Queen rearing
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5763 , http://hdl.handle.net/10962/d1005451
- Description: The role of the queen in wax secretion and comb building was studied in the the Cape honeybee, Apis mellifera capensis (Escholtz). The percentage of bees bearing wax and the amount of wax borne by these bees did not differ between the experiments. This meant that the queenless and queenright colonies had the potential to construct equal amounts of comb as the amounts of wax available for comb building was the same. Contrary to this prediction, queenright colonies constructed 8 times more comb than their queenless counterparts. Queenright Apis mellifera scutellata colonies constructed 4 times more comb than their queenless counterparts. The increased amount of 9-oxo-2-decanoic acid (90DA) in the A.m.capensis mandibular gland secretions could not alone account for this difference. In fact, A.m.capensis and A.m.scutellata colonies constructed similar amounts of comb when they were given their own queens or queens from the other race. Worker bees need to have direct contact with their queen for comb building to be enhanced. Even when the queen had her mandibular glands extirpated and tergite glands occluded large amounts of comb were constructed than when access to the queen was limited. Direct access to the head of a mated queen proved to be the stimulus enhancing comb building. No comb was constructed when the workers had access to the abdomen of the queen. Virgin queens did not stimulate comb building. The relatively large amounts of 90DA and 9HDA from the mandibular glands of Cape virgin queens had not influenced comb building. Worker sized cells were generally constructed. These cells were slightly smaller than those constructed by European honeybees, but were indicative of African bees. A few queen less colonies constructed cells that were of an intermediate drone and worker size. Four mandibular gland pneromones were measured by gas chromatography. No correlations between these pheromones and the comb construction measurements were found. It is unlikely that the mandibular gland pheromones are the only pheromones that stimulate comb building. Pheromones from other glands on the head may contribute towards the enhancement of comb building, and they are not present in virgin queens
- Full Text:
- Date Issued: 1992
- Authors: Whiffler, Lynne Anne
- Date: 1992
- Subjects: Honeybee Honey, Comb Beeswax Bee culture -- Queen rearing
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5763 , http://hdl.handle.net/10962/d1005451
- Description: The role of the queen in wax secretion and comb building was studied in the the Cape honeybee, Apis mellifera capensis (Escholtz). The percentage of bees bearing wax and the amount of wax borne by these bees did not differ between the experiments. This meant that the queenless and queenright colonies had the potential to construct equal amounts of comb as the amounts of wax available for comb building was the same. Contrary to this prediction, queenright colonies constructed 8 times more comb than their queenless counterparts. Queenright Apis mellifera scutellata colonies constructed 4 times more comb than their queenless counterparts. The increased amount of 9-oxo-2-decanoic acid (90DA) in the A.m.capensis mandibular gland secretions could not alone account for this difference. In fact, A.m.capensis and A.m.scutellata colonies constructed similar amounts of comb when they were given their own queens or queens from the other race. Worker bees need to have direct contact with their queen for comb building to be enhanced. Even when the queen had her mandibular glands extirpated and tergite glands occluded large amounts of comb were constructed than when access to the queen was limited. Direct access to the head of a mated queen proved to be the stimulus enhancing comb building. No comb was constructed when the workers had access to the abdomen of the queen. Virgin queens did not stimulate comb building. The relatively large amounts of 90DA and 9HDA from the mandibular glands of Cape virgin queens had not influenced comb building. Worker sized cells were generally constructed. These cells were slightly smaller than those constructed by European honeybees, but were indicative of African bees. A few queen less colonies constructed cells that were of an intermediate drone and worker size. Four mandibular gland pneromones were measured by gas chromatography. No correlations between these pheromones and the comb construction measurements were found. It is unlikely that the mandibular gland pheromones are the only pheromones that stimulate comb building. Pheromones from other glands on the head may contribute towards the enhancement of comb building, and they are not present in virgin queens
- Full Text:
- Date Issued: 1992
The effects of a 160 km run on selected anthropometric, physiological and psychological parameters
- Authors: Oltmann, Carmen
- Date: 1992
- Subjects: Marathon running -- Psychological effects , Marathon running -- Physiological effects
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5148 , http://hdl.handle.net/10962/d1009706 , Marathon running -- Psychological effects , Marathon running -- Physiological effects
- Description: Twenty-one male subjects volunteered to participate in this study of the effects of an ultramarathon run under competitive conditions. Selected anthropometric measurements were made before and after the race. Blood samples were taken before, and within 10 min. of completing the race. Haematocrit and cortisol concentrations were analysed from each sample. Three ratings of perceived exertion (RPE) - local, central and overall, were obtained at two-hourly intervals throughout the race. The shortened form of the Eysenck Personality Inventory (EPI) was administered before the race. The Profile of Mood States (POMS) test was completed both before and immediately after the race. The average running intensity was estimated to be about 32% VO₂max which would not have caused major lactate accumulation. Repetitive compressive forces as a result of heel-strike resulted in intervertebral disc fluid loss. This resulted in a significant (p<0.05) decrease in stature after the race. Mobilization of glycogen, trig1ycerides and protein for metabolism as well as fluid loss via sweat resulted in significantly decreased body mass after the race. Plasma volume and serum cortisol concentrations were significantly increased after the race compared to pre-race baseline levels. Local RPE responses were dominant throughout the entire race, followed by overall RPE. Running 160 km had an effect on mood state. "Depression", "fatigue" and "confusion" (profile of Mood states) were all significantly increased compared to pre-race scores. Sleep deprivation as a result of running through the night was probably an important contributing factor. The anthropometric profile of the ultramarathon runners in this sample was more like that of the general population than elite marathon runners from the literature. The ultramarathon runners were more extroverted than elite marathon runners, but exhibited a similar Profile of Mood state before the race. The stressor - running 160 km - resulted in a 'strain response'. This was evident in the decreased stature and mass, and increased serum cortisol, "depression", "confusion" and above all "fatigue".
- Full Text:
- Date Issued: 1992
- Authors: Oltmann, Carmen
- Date: 1992
- Subjects: Marathon running -- Psychological effects , Marathon running -- Physiological effects
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5148 , http://hdl.handle.net/10962/d1009706 , Marathon running -- Psychological effects , Marathon running -- Physiological effects
- Description: Twenty-one male subjects volunteered to participate in this study of the effects of an ultramarathon run under competitive conditions. Selected anthropometric measurements were made before and after the race. Blood samples were taken before, and within 10 min. of completing the race. Haematocrit and cortisol concentrations were analysed from each sample. Three ratings of perceived exertion (RPE) - local, central and overall, were obtained at two-hourly intervals throughout the race. The shortened form of the Eysenck Personality Inventory (EPI) was administered before the race. The Profile of Mood States (POMS) test was completed both before and immediately after the race. The average running intensity was estimated to be about 32% VO₂max which would not have caused major lactate accumulation. Repetitive compressive forces as a result of heel-strike resulted in intervertebral disc fluid loss. This resulted in a significant (p<0.05) decrease in stature after the race. Mobilization of glycogen, trig1ycerides and protein for metabolism as well as fluid loss via sweat resulted in significantly decreased body mass after the race. Plasma volume and serum cortisol concentrations were significantly increased after the race compared to pre-race baseline levels. Local RPE responses were dominant throughout the entire race, followed by overall RPE. Running 160 km had an effect on mood state. "Depression", "fatigue" and "confusion" (profile of Mood states) were all significantly increased compared to pre-race scores. Sleep deprivation as a result of running through the night was probably an important contributing factor. The anthropometric profile of the ultramarathon runners in this sample was more like that of the general population than elite marathon runners from the literature. The ultramarathon runners were more extroverted than elite marathon runners, but exhibited a similar Profile of Mood state before the race. The stressor - running 160 km - resulted in a 'strain response'. This was evident in the decreased stature and mass, and increased serum cortisol, "depression", "confusion" and above all "fatigue".
- Full Text:
- Date Issued: 1992
An evaluation of the use of computers in a South African primary school
- Authors: Mostert, Orla
- Date: 1992
- Subjects: Education, Elementary -- South Africa -- Computer-assisted instruction Computer-assisted instruction -- South Africa Educational technology -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1528 , http://hdl.handle.net/10962/d1003410
- Description: The introduction of the computer into the educational arena is unique as pressure for its inclusion has come not from educationalists, but from public demand based on the conviction that exposure to computers is an essential ingredient of modern education. This has resulted in computers being added to school curricula before there has been careful research into its educational implications, making huge demands on teachers involved in the innovation. South African primary schools involved in computer education have followed international trends in their adoption of computers, initially perceiving computer education as a separate subject added on to the present curriculum. However, changing trends in computer use internationally are now beginning to reflect educators' changing perceptions of the nature of primary education, and educators are calling for the use of computers to be integrated into the curriculum rather than being seen as an area of study in themselves. This investigation attempts to outline general trends and perceptions of computer use in a South African primary school. Despite a high level of computer usage at the observed school, the computer was seen by teachers, in the main, as an extra subject, and has not yet led to any significant changes in teaching styles and methods. The research suggests that two main issues need to be resolved before computer education in primary schools reflects the present paradigm shift towards learner-centered educational practices. Firstly, there is a need to rethink the delivery of the curriculum towards one which promotes a greater degree of problem solving and decision making on the part of the learner. Secondly, it would appear that teachers need to be made more aware of this trend.
- Full Text:
- Date Issued: 1992
- Authors: Mostert, Orla
- Date: 1992
- Subjects: Education, Elementary -- South Africa -- Computer-assisted instruction Computer-assisted instruction -- South Africa Educational technology -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1528 , http://hdl.handle.net/10962/d1003410
- Description: The introduction of the computer into the educational arena is unique as pressure for its inclusion has come not from educationalists, but from public demand based on the conviction that exposure to computers is an essential ingredient of modern education. This has resulted in computers being added to school curricula before there has been careful research into its educational implications, making huge demands on teachers involved in the innovation. South African primary schools involved in computer education have followed international trends in their adoption of computers, initially perceiving computer education as a separate subject added on to the present curriculum. However, changing trends in computer use internationally are now beginning to reflect educators' changing perceptions of the nature of primary education, and educators are calling for the use of computers to be integrated into the curriculum rather than being seen as an area of study in themselves. This investigation attempts to outline general trends and perceptions of computer use in a South African primary school. Despite a high level of computer usage at the observed school, the computer was seen by teachers, in the main, as an extra subject, and has not yet led to any significant changes in teaching styles and methods. The research suggests that two main issues need to be resolved before computer education in primary schools reflects the present paradigm shift towards learner-centered educational practices. Firstly, there is a need to rethink the delivery of the curriculum towards one which promotes a greater degree of problem solving and decision making on the part of the learner. Secondly, it would appear that teachers need to be made more aware of this trend.
- Full Text:
- Date Issued: 1992
Managing historical primary and secondary sources : a study of the efficacy of a teaching handbook prepared for first-year Vista University students
- Authors: Watson, Kelvin Innes
- Date: 1992
- Subjects: History -- Study and teaching (Secondary) -- South Africa History -- Study and teaching (Higher) -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1670 , http://hdl.handle.net/10962/d1003553
- Description: This study examines the teaching of primary and secondary sources in history at secondary and tertiary level. The various methods used to teach these aspects of the nature of history are compared to the Vista University teaching model. To establish the effectiveness of the vista Block A module for HIS100 students, two test instruments were devised to assess their skills in handling primary and secondary sources. Their skills in identifying relevant points from a passage of historical prose were also tested. A number of statistical techniques were applied to the data from the test instruments. This data was analysed in qualitative and quantitative terms. The results of this analysis suggested that students would probably benefit from a skills-orientated approach to studying history. On the basis of this study, it is recommended that the existing Vista teaching model be revised or amended so that a more effective method of teaching students about the nature of historical sources can be introduced.
- Full Text:
- Date Issued: 1992
- Authors: Watson, Kelvin Innes
- Date: 1992
- Subjects: History -- Study and teaching (Secondary) -- South Africa History -- Study and teaching (Higher) -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1670 , http://hdl.handle.net/10962/d1003553
- Description: This study examines the teaching of primary and secondary sources in history at secondary and tertiary level. The various methods used to teach these aspects of the nature of history are compared to the Vista University teaching model. To establish the effectiveness of the vista Block A module for HIS100 students, two test instruments were devised to assess their skills in handling primary and secondary sources. Their skills in identifying relevant points from a passage of historical prose were also tested. A number of statistical techniques were applied to the data from the test instruments. This data was analysed in qualitative and quantitative terms. The results of this analysis suggested that students would probably benefit from a skills-orientated approach to studying history. On the basis of this study, it is recommended that the existing Vista teaching model be revised or amended so that a more effective method of teaching students about the nature of historical sources can be introduced.
- Full Text:
- Date Issued: 1992
The anatomy and ecophysiology of Mariscus congestus from three different habitats in the Albany and Bathurst districts of the Eastern Cape, investigated under field and laboratory conditions
- Authors: Sonnenberg, Bernd Jürgen
- Date: 1992
- Subjects: Cyperaceae -- South Africa , Plant anatomy , Plant physiology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4229 , http://hdl.handle.net/10962/d1003798 , Cyperaceae -- South Africa , Plant anatomy , Plant physiology
- Description: An investigation of the anatomy and gas exchange characteristics of Mariscus congestus in three different habitats was undertaken in order to establish whether M. congestus from the three different habitats displayed any ecotypic responses when placed in a new similar environment. It was hoped that the results of this investigation would yield evidence that would support the ecotype concept similar to the investigations of Milner and Hiesey (1964), Green (1969) and Slayter and Ferrar (1977). On the basis of the site leaf anatomy, M. congestus investigated at the coast (site 1) differed in many respects from the inland plants (sites 2 and 3). These differences suggest that the coastal plants may have undergone a slight ecotypic divergence from the inland plants. The anatomical investigation also suggested that the leaves of M. congestus from all three sites may either be C₄ NADP-ME or PCK and that all had typical Chlorocyperiod anatomy. The habitat microclimates at sites 1-3 had different light and water regimes. There were no significant differences between the 12 month temperature environments of the three sites. There was however, a minor difference between the coastal (high temperature) and the inland (lower temperature) sites. M. congestus at the three sites had significantly different CO₂ assimilation rates, transpiration and stomatal conductance in response to the differing habitat microclimates. The water use efficiency of the sites were however, similar. Site 1 attained the highest CO₂ assimilation rates, transpiration, stomatal conductance, and water use efficiency and site 3 the lowest. Under similar conditions the gas exchange data for the potted plants indicated that M. congestus from the different sites was typically C₄. The optimal photosynthetic temperatures of all the sites was above 30°C and they did not show significant inhibition of CO₂ assimilation by different oxygen concentrations. The results of the laboratory investigation of the potted plants suggested that the only site-specific (ecotypic) response of M. eongestus was the light intensity at which the plants from the different sites were light saturated. The light and temperature response of field plants under field conditions was not comparable to the light and temperature response of potted plants under laboratory conditions. This may have been due to the field results being obtained under differing water and soil nutrient regimes. The potted plants may also have had a reduced root mass compared to their field counterparts and the potted plants may have also have become root bound. Under field conditions the plants had differing light saturation points and optimal photosynthetic temperatures compared to the potted plants. This investigation thus did not support the hypothesis stated in this thesis. The data in this investigation thus may indicate that plants with as diverse habitats as Mariscus congestus that are removed from their natural habitats display rapid changes in gas exchange characteristics in response to their new microclimates, with few ecotypic physiological characteristics of the old habitat being retained.
- Full Text:
- Date Issued: 1992
- Authors: Sonnenberg, Bernd Jürgen
- Date: 1992
- Subjects: Cyperaceae -- South Africa , Plant anatomy , Plant physiology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4229 , http://hdl.handle.net/10962/d1003798 , Cyperaceae -- South Africa , Plant anatomy , Plant physiology
- Description: An investigation of the anatomy and gas exchange characteristics of Mariscus congestus in three different habitats was undertaken in order to establish whether M. congestus from the three different habitats displayed any ecotypic responses when placed in a new similar environment. It was hoped that the results of this investigation would yield evidence that would support the ecotype concept similar to the investigations of Milner and Hiesey (1964), Green (1969) and Slayter and Ferrar (1977). On the basis of the site leaf anatomy, M. congestus investigated at the coast (site 1) differed in many respects from the inland plants (sites 2 and 3). These differences suggest that the coastal plants may have undergone a slight ecotypic divergence from the inland plants. The anatomical investigation also suggested that the leaves of M. congestus from all three sites may either be C₄ NADP-ME or PCK and that all had typical Chlorocyperiod anatomy. The habitat microclimates at sites 1-3 had different light and water regimes. There were no significant differences between the 12 month temperature environments of the three sites. There was however, a minor difference between the coastal (high temperature) and the inland (lower temperature) sites. M. congestus at the three sites had significantly different CO₂ assimilation rates, transpiration and stomatal conductance in response to the differing habitat microclimates. The water use efficiency of the sites were however, similar. Site 1 attained the highest CO₂ assimilation rates, transpiration, stomatal conductance, and water use efficiency and site 3 the lowest. Under similar conditions the gas exchange data for the potted plants indicated that M. congestus from the different sites was typically C₄. The optimal photosynthetic temperatures of all the sites was above 30°C and they did not show significant inhibition of CO₂ assimilation by different oxygen concentrations. The results of the laboratory investigation of the potted plants suggested that the only site-specific (ecotypic) response of M. eongestus was the light intensity at which the plants from the different sites were light saturated. The light and temperature response of field plants under field conditions was not comparable to the light and temperature response of potted plants under laboratory conditions. This may have been due to the field results being obtained under differing water and soil nutrient regimes. The potted plants may also have had a reduced root mass compared to their field counterparts and the potted plants may have also have become root bound. Under field conditions the plants had differing light saturation points and optimal photosynthetic temperatures compared to the potted plants. This investigation thus did not support the hypothesis stated in this thesis. The data in this investigation thus may indicate that plants with as diverse habitats as Mariscus congestus that are removed from their natural habitats display rapid changes in gas exchange characteristics in response to their new microclimates, with few ecotypic physiological characteristics of the old habitat being retained.
- Full Text:
- Date Issued: 1992
Self-reports on the effectiveness of psychotherapy with therapists-in-training: an 18-month follow-up study at a psychology training clinic
- Authors: Angus, Catherine Clare
- Date: 1993
- Subjects: Uncatalogued
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/193069 , vital:45295
- Description: The purpose of this study is to ascertain whether the clients who make use of the services of the Psychology Clinic at Rhodes University perceive the masters students being trained at the Clinic as providing adequate psychotherapy. Using a sample of 18 clients, who underwent psychotherapy at the Rhodes Psychology Clinic during 1990, a follow-up study was conducted to ascertain the perceived success of that psychotherapy. Those variables most pertinent to the outcome of psychotherapy are examined. The study uses both qualitative and quantitative methodology and shows that, overall, 89% of the clients who participated in this study perceived the psychotherapy at the Rhodes Psychology Clinic to be satisfactory. The study also highlights those factors which were perceived to be negative in the psychotherapeutic equation and it is hoped that the findings can be beneficial in planning more efficient services for the Clinic in the future. , Thesis (MA) -- Faculty of Humanities, Psychology, 1993
- Full Text:
- Date Issued: 1993
- Authors: Angus, Catherine Clare
- Date: 1993
- Subjects: Uncatalogued
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10962/193069 , vital:45295
- Description: The purpose of this study is to ascertain whether the clients who make use of the services of the Psychology Clinic at Rhodes University perceive the masters students being trained at the Clinic as providing adequate psychotherapy. Using a sample of 18 clients, who underwent psychotherapy at the Rhodes Psychology Clinic during 1990, a follow-up study was conducted to ascertain the perceived success of that psychotherapy. Those variables most pertinent to the outcome of psychotherapy are examined. The study uses both qualitative and quantitative methodology and shows that, overall, 89% of the clients who participated in this study perceived the psychotherapy at the Rhodes Psychology Clinic to be satisfactory. The study also highlights those factors which were perceived to be negative in the psychotherapeutic equation and it is hoped that the findings can be beneficial in planning more efficient services for the Clinic in the future. , Thesis (MA) -- Faculty of Humanities, Psychology, 1993
- Full Text:
- Date Issued: 1993
Mtsitso 6
- 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/10962/96444 , vital:31277 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC049a-06
- 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/10962/96444 , vital:31277 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC049a-06
- Description: Traditional dance song accompanied by timbila xylophone rattles and one drum
- Full Text: false
- Date Issued: 1992
An assessment of a new personality measure of authoritarianism in the South African context
- Authors: Léger, Paul
- Date: 1992
- Subjects: Authoritarianism (Personality trait) -- Research , Authoritarianism -- Research -- South Africa , Psychological tests -- Research , Personality tests -- Research
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3007 , http://hdl.handle.net/10962/d1002516 , Authoritarianism (Personality trait) -- Research , Authoritarianism -- Research -- South Africa , Psychological tests -- Research , Personality tests -- Research
- Description: The aim of the research was to assess the psychometric properties of Altemeyer's (1981) Right-Wing Authoritarianism scale (RWA scale)- developed in response to identified methodological weaknesses in personality measures of authoritarianism to date - within a South African setting. A modified version of the 24-item attitudinal scale, together with a demographic questionnaire was administered to a white and black sample of South African university students. Subsequent psychometric analysis of the data indicated that the scale was a significantly less powerful measure of authoritarianism in a cross-cultural context, than originally hoped for. Not only did the analysis show an absence of psychometric equivalence but revealed substantial problems within the content of the scale itself. An ensuing discussion of these findings situated the debate within a broader theoretical context. It was argued that the RWA scale, and its underpinning conceptualization, although possibly comprising a methodological refinement over existing measures of authoritarianism, did not constitute grounds for a viable approach to research on authoritarianism in the South African context. It was concluded that a model of authoritarianism resting on the assumptions of positivistic psychology, inevitably failed to account for the social and political dynamics of a changing society. As a socially relevant enterprise, it was suggested that the debate on authoritarianism be extended beyond the confines of individualistic psychology and research priority directed instead to the crucial role of societal factors giving rise to the individual manifestation of the phenomenon.
- Full Text:
- Date Issued: 1992
- Authors: Léger, Paul
- Date: 1992
- Subjects: Authoritarianism (Personality trait) -- Research , Authoritarianism -- Research -- South Africa , Psychological tests -- Research , Personality tests -- Research
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3007 , http://hdl.handle.net/10962/d1002516 , Authoritarianism (Personality trait) -- Research , Authoritarianism -- Research -- South Africa , Psychological tests -- Research , Personality tests -- Research
- Description: The aim of the research was to assess the psychometric properties of Altemeyer's (1981) Right-Wing Authoritarianism scale (RWA scale)- developed in response to identified methodological weaknesses in personality measures of authoritarianism to date - within a South African setting. A modified version of the 24-item attitudinal scale, together with a demographic questionnaire was administered to a white and black sample of South African university students. Subsequent psychometric analysis of the data indicated that the scale was a significantly less powerful measure of authoritarianism in a cross-cultural context, than originally hoped for. Not only did the analysis show an absence of psychometric equivalence but revealed substantial problems within the content of the scale itself. An ensuing discussion of these findings situated the debate within a broader theoretical context. It was argued that the RWA scale, and its underpinning conceptualization, although possibly comprising a methodological refinement over existing measures of authoritarianism, did not constitute grounds for a viable approach to research on authoritarianism in the South African context. It was concluded that a model of authoritarianism resting on the assumptions of positivistic psychology, inevitably failed to account for the social and political dynamics of a changing society. As a socially relevant enterprise, it was suggested that the debate on authoritarianism be extended beyond the confines of individualistic psychology and research priority directed instead to the crucial role of societal factors giving rise to the individual manifestation of the phenomenon.
- Full Text:
- Date Issued: 1992
Ngalanga 1st 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/10962/98867 , vital:31635 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-01
- 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/10962/98867 , vital:31635 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-01
- Description: Traditional Ngalanga dance song for young people with 3 Timbila xylophone and 3 drums accompaniment
- Full Text: false
- Date Issued: 1992
Petrogenesis of the upper critical zone in the Western Bushveld Complex with emphasis on the UG1 Footwall and Bastard units
- Authors: De Klerk, William Johan
- Date: 1992
- Subjects: Petrogenesis -- South Africa Formations (Geology) -- South Africa Mineralogy -- South Africa Geochemistry -- South Africa Petrology -- Africa, Southern Rustenburg Platinum Mines
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4986 , http://hdl.handle.net/10962/d1005598
- Description: This study is an account of the stratigraphic sequence, the petrography, mineralogy (microprobe investigations of orthopyroxene, clinopyroxene, olivine and plagioclase feldspar), and whole-rock major- and traceelement geochemistry of the silicate cumulates of the Upper Critical Zone in the western Bushveld Complex. Two parts of the study - an investigation of a 350m column incorporating the MG3 and UGI Footwall Units, and a comparison of two additional Upper Critical Zone profiles with a previously compiled profile between the UGI and Bastard Units - are focused on RPM Union Section in the northwestern sector of the Complex. The third part is a detailed vertical and lateral investigation of the Bastard Unit at the top of the Critical Zone, which draws on sampling and data compilation from seventeen profiles in the western limb of the Complex. The MG3 Unit (45m) is made up of a lower chromitite layer overlain by a norite-pyroxenite-anorthosite sequence while the UGlFW Unit (295m) is composed of a related series of lower chromitite layers (MG4) overlain by a pyroxenite-norite-anorthosite sequence capped by the UGI chromitite layer. These mafic cumulates display a distinctive pattern of oscillating cryptic variation in whole-rock Mg/(Mg+Fe), FeO/Ti0₂, Cr/Co and Ni/V ratios through the sequence. Sympathetic oscillations are recorded for compositions of orthopyroxene and plagioclase feldspar and eight subcycles are recognised through the UGlFW Unit. The entire sequence is characterised by the presence of small, spheroidal, embayed and irregularly shaped plagioclase grains which are poikilitically enclosed in cumulus orthopyroxene grains of both pyroxenites and norites. This texture is indicative of partial resorption of pre-existing feldspar primocrysts within the melt prior to their being incorporated into the host orthopyroxene grains. Textural, geochemical and isotopic data suggest that this sequence was built up by periodic additions of fresh, relatively primitive liquid into fractionated resident liquid, and subsequent mixing within the magma chamber. The Bastard Unit sequence, described in Chapter 4, is the last and most complete cyclic unit (c. 60m) of the Critical Zone, and its upper contact defines the boundary between the Critical and Main Zones of the Complex. This Unit can conveniently be sub-divided into a lower part, where orthopyroxene occurs as a cumulus phase, and the upper part which is composed entirely of anorthosite (Giant Mottled Anorthosite). The basal part of the Unit (≤ 18m) comprises a thin chromitite layer < O.5cm) overlain by a pyroxenite-melanorite-norite-leuconorite sequence. The basal pyroxenite is orthocumulate in character and rapidly gives way to norites and leuconorites. A distinct threefold subdivision emerges within the Giant Mottled Anorthosite which is predominantly an adcumulate which becomes orthocumulate in character at its top. Apart from minor deviations in thicknesses these lithologies are recorded over the entire strike-length covered in this study. Profiles of cryptic variation are compiled for orthopyroxene, plagioclase and whole-rock data and show that the Bastard Unit displays a characteristic pattern which is maintained throughout the western Bushveld Complex. A minor yet distinctive reversal in cryptic variation is revealed at a level which is stratigraphically variable within the lower Giant Mottled Anorthosite, and results in a double cuspate pattern. A remarkable feature of the basal Bastard pyroxenites is that although the modal proportion of mafic to felsic constituents varies systematically away from the northwestern sector, the Mg/(Mg+Fe) ratio of orthopyroxenes remains constant at 0.804 over a lateral strike distance of 171km. Within the upper part of the Unit the orthopyroxene is markedly Fe-rich and it is here that inverted primary pigeonite appears for the first time as a cumulus phase. In addition, K-feldspar, oscillatory zoned plagioclase grains and high levels of incompatible trace elements are noted at this level. On the basis of the data presented it is concluded that the Bastard Unit represents the crystallisation of a final, relatively large influx of hotter primitive liquid, with upper Critical Zone affinities, and subsequent mixing with a column of cooler (less dense) supernatant liquid which had in part hybridized with the overlying Main Zone magma. It is hypothesised that this new liquid was emplaced as a basal flow beneath supernatant liquid and that it initiated the deposition of mafic cumulates at its base. The supernatant liquid is interpreted as representing the fractionated residuum produced by crystallisation of earlier cyclic units, with plagioclase on the liquidus, and that it contained an abundance of small plagioclase primocrysts in suspension. Development of the Unit can be viewed as a two-stage process. In the lower half of the unit, chemical and physical parameters typical of the new magma dominated the crystallisation process, and resulted in cumulates very similar to other relatively complete Upper Critical Zone units. In the upper, leucocratic sequence, above a minor reversal, crystallisation was from a liquid which was the product of mixing of a minor pulse of primitive liquid with the reservoir of hybridized supernatant liquid. Although the Bastard Unit is not continuous around the entire Western limb of the Complex, it is concluded that it developed in a single, or connected, magma chamber and that its irruptive feeder zone was located in the proximal northwestern facies of the Complex.
- Full Text:
- Date Issued: 1992
- Authors: De Klerk, William Johan
- Date: 1992
- Subjects: Petrogenesis -- South Africa Formations (Geology) -- South Africa Mineralogy -- South Africa Geochemistry -- South Africa Petrology -- Africa, Southern Rustenburg Platinum Mines
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4986 , http://hdl.handle.net/10962/d1005598
- Description: This study is an account of the stratigraphic sequence, the petrography, mineralogy (microprobe investigations of orthopyroxene, clinopyroxene, olivine and plagioclase feldspar), and whole-rock major- and traceelement geochemistry of the silicate cumulates of the Upper Critical Zone in the western Bushveld Complex. Two parts of the study - an investigation of a 350m column incorporating the MG3 and UGI Footwall Units, and a comparison of two additional Upper Critical Zone profiles with a previously compiled profile between the UGI and Bastard Units - are focused on RPM Union Section in the northwestern sector of the Complex. The third part is a detailed vertical and lateral investigation of the Bastard Unit at the top of the Critical Zone, which draws on sampling and data compilation from seventeen profiles in the western limb of the Complex. The MG3 Unit (45m) is made up of a lower chromitite layer overlain by a norite-pyroxenite-anorthosite sequence while the UGlFW Unit (295m) is composed of a related series of lower chromitite layers (MG4) overlain by a pyroxenite-norite-anorthosite sequence capped by the UGI chromitite layer. These mafic cumulates display a distinctive pattern of oscillating cryptic variation in whole-rock Mg/(Mg+Fe), FeO/Ti0₂, Cr/Co and Ni/V ratios through the sequence. Sympathetic oscillations are recorded for compositions of orthopyroxene and plagioclase feldspar and eight subcycles are recognised through the UGlFW Unit. The entire sequence is characterised by the presence of small, spheroidal, embayed and irregularly shaped plagioclase grains which are poikilitically enclosed in cumulus orthopyroxene grains of both pyroxenites and norites. This texture is indicative of partial resorption of pre-existing feldspar primocrysts within the melt prior to their being incorporated into the host orthopyroxene grains. Textural, geochemical and isotopic data suggest that this sequence was built up by periodic additions of fresh, relatively primitive liquid into fractionated resident liquid, and subsequent mixing within the magma chamber. The Bastard Unit sequence, described in Chapter 4, is the last and most complete cyclic unit (c. 60m) of the Critical Zone, and its upper contact defines the boundary between the Critical and Main Zones of the Complex. This Unit can conveniently be sub-divided into a lower part, where orthopyroxene occurs as a cumulus phase, and the upper part which is composed entirely of anorthosite (Giant Mottled Anorthosite). The basal part of the Unit (≤ 18m) comprises a thin chromitite layer < O.5cm) overlain by a pyroxenite-melanorite-norite-leuconorite sequence. The basal pyroxenite is orthocumulate in character and rapidly gives way to norites and leuconorites. A distinct threefold subdivision emerges within the Giant Mottled Anorthosite which is predominantly an adcumulate which becomes orthocumulate in character at its top. Apart from minor deviations in thicknesses these lithologies are recorded over the entire strike-length covered in this study. Profiles of cryptic variation are compiled for orthopyroxene, plagioclase and whole-rock data and show that the Bastard Unit displays a characteristic pattern which is maintained throughout the western Bushveld Complex. A minor yet distinctive reversal in cryptic variation is revealed at a level which is stratigraphically variable within the lower Giant Mottled Anorthosite, and results in a double cuspate pattern. A remarkable feature of the basal Bastard pyroxenites is that although the modal proportion of mafic to felsic constituents varies systematically away from the northwestern sector, the Mg/(Mg+Fe) ratio of orthopyroxenes remains constant at 0.804 over a lateral strike distance of 171km. Within the upper part of the Unit the orthopyroxene is markedly Fe-rich and it is here that inverted primary pigeonite appears for the first time as a cumulus phase. In addition, K-feldspar, oscillatory zoned plagioclase grains and high levels of incompatible trace elements are noted at this level. On the basis of the data presented it is concluded that the Bastard Unit represents the crystallisation of a final, relatively large influx of hotter primitive liquid, with upper Critical Zone affinities, and subsequent mixing with a column of cooler (less dense) supernatant liquid which had in part hybridized with the overlying Main Zone magma. It is hypothesised that this new liquid was emplaced as a basal flow beneath supernatant liquid and that it initiated the deposition of mafic cumulates at its base. The supernatant liquid is interpreted as representing the fractionated residuum produced by crystallisation of earlier cyclic units, with plagioclase on the liquidus, and that it contained an abundance of small plagioclase primocrysts in suspension. Development of the Unit can be viewed as a two-stage process. In the lower half of the unit, chemical and physical parameters typical of the new magma dominated the crystallisation process, and resulted in cumulates very similar to other relatively complete Upper Critical Zone units. In the upper, leucocratic sequence, above a minor reversal, crystallisation was from a liquid which was the product of mixing of a minor pulse of primitive liquid with the reservoir of hybridized supernatant liquid. Although the Bastard Unit is not continuous around the entire Western limb of the Complex, it is concluded that it developed in a single, or connected, magma chamber and that its irruptive feeder zone was located in the proximal northwestern facies of the Complex.
- Full Text:
- Date Issued: 1992
Isiyambane segqirha
- Date: 1960-07-07 , 2023-09-01
- Subjects: Beadwork , Head-band
- Language: English
- Type: realia , Personal adornment
- Identifier: http://hdl.handle.net/11260/8598 , vital:68019
- Description: A head-band in white strip decorated in four pearl buttons navy chevrons and diamonds,The strip is positioned infront head and long bead streamers covers the face, worn by deviner, It is part of Walter Sisulu University Beadwork Collection that was acquired from Mrs Broster in 1992. , Purchased from Mrs Joan Broster , Forms part of: Walter Sisulu University Beadwork Collection
- Full Text: false
- Date Issued: 1960-07-07
- Date: 1960-07-07 , 2023-09-01
- Subjects: Beadwork , Head-band
- Language: English
- Type: realia , Personal adornment
- Identifier: http://hdl.handle.net/11260/8598 , vital:68019
- Description: A head-band in white strip decorated in four pearl buttons navy chevrons and diamonds,The strip is positioned infront head and long bead streamers covers the face, worn by deviner, It is part of Walter Sisulu University Beadwork Collection that was acquired from Mrs Broster in 1992. , Purchased from Mrs Joan Broster , Forms part of: Walter Sisulu University Beadwork Collection
- Full Text: false
- Date Issued: 1960-07-07
Timbila 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) , Rattle (Musical instruments) , Whistling music , Flute (Woodwind instrument) , 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/10962/98912 , vital:31642 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-06
- Description: Traditional Timbila dance song with 3 Timbila xylophone, flute, 3 drums, rattles and whistling 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) , Rattle (Musical instruments) , Whistling music , Flute (Woodwind instrument) , 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/10962/98912 , vital:31642 , International Library of African Music, Rhodes University, Grahamstown, South Africa , ATC076a-06
- Description: Traditional Timbila dance song with 3 Timbila xylophone, flute, 3 drums, rattles and whistling accompaniment
- Full Text: false
- Date Issued: 1992
A study of the effect of progesterone on the body weight regulation in intact female rats
- Authors: Ravelingien, Jo
- Date: 1992
- Subjects: Progesterone -- Physiological effect , Body weight -- Regulation , Rats -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3787 , http://hdl.handle.net/10962/d1003265 , Progesterone -- Physiological effect , Body weight -- Regulation , Rats -- Research
- Description: It is the aim of this study to elucidate the influence of progesterone on body weight regulation in intact female rats. A study of the literature includes a description of the body weight regulation and the effects of ovarian hormones on it. The controlled-system approach tries to link behavioral and physiological factors altering energy balance. The experimental study is subdivided into food-intake - and food-selection studies, a locomotor activity study, a study eliciting a possible role of thermogenesis, and finally rat liver studies which consist of a gas chromatography analysis of hepatic fatty acids and an electron microscopy study examining the ultrastructure of hepatocytes. It can be concluded that the effect of progesterone treatment on the body weight of intact female rats depends on the route of administration. There is a significant increase in body weight after subcutaneous progesterone injections without changes in total caloric intake and nutrient selection habits, indicating the importance of energy expenditure. But changes in spontaneous activity make no contribution in the progesterone-induced energy storage. It is also concluded that peripherally located brown adipose tissue thermogenesis is not changed, without ruling out the effect of more centrally located thermogenic organs as the liver. In this organ, small but significant changes in the fatty acid profile occur during the subcutaneous progesterone treatment.
- Full Text:
- Date Issued: 1992
- Authors: Ravelingien, Jo
- Date: 1992
- Subjects: Progesterone -- Physiological effect , Body weight -- Regulation , Rats -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3787 , http://hdl.handle.net/10962/d1003265 , Progesterone -- Physiological effect , Body weight -- Regulation , Rats -- Research
- Description: It is the aim of this study to elucidate the influence of progesterone on body weight regulation in intact female rats. A study of the literature includes a description of the body weight regulation and the effects of ovarian hormones on it. The controlled-system approach tries to link behavioral and physiological factors altering energy balance. The experimental study is subdivided into food-intake - and food-selection studies, a locomotor activity study, a study eliciting a possible role of thermogenesis, and finally rat liver studies which consist of a gas chromatography analysis of hepatic fatty acids and an electron microscopy study examining the ultrastructure of hepatocytes. It can be concluded that the effect of progesterone treatment on the body weight of intact female rats depends on the route of administration. There is a significant increase in body weight after subcutaneous progesterone injections without changes in total caloric intake and nutrient selection habits, indicating the importance of energy expenditure. But changes in spontaneous activity make no contribution in the progesterone-induced energy storage. It is also concluded that peripherally located brown adipose tissue thermogenesis is not changed, without ruling out the effect of more centrally located thermogenic organs as the liver. In this organ, small but significant changes in the fatty acid profile occur during the subcutaneous progesterone treatment.
- Full Text:
- Date Issued: 1992
The FITE for reading teaching : an examination of the initial training of senior primary teachers at a sample of institutions in England and South Africa
- Authors: McKellar, David William
- Date: 1992
- Subjects: Reading (Elementary) -- South Africa Reading (Elementary) -- Great Britain Teachers -- Training of -- South Africa Teachers -- Training of -- Great Britain
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1545 , http://hdl.handle.net/10962/d1003427
- Description: Primary school teachers are expected to teach reading. Whether they are adequately prepared to fulfil this role, particularly for those preparing to teach in the senior primary phase, is the concern of this thesis. Reading teaching models are useful to reading teaching course developers for devising initial training syllabuses. Such models are described, followed by an example of such a syllabus developed at Rhodes University. The Rhodes University model, described early in the thesis, is used as a background for the further consideration of aspects of reading teaching at other institutions. This model is also used as an instrument for assessing the pre-service teaching experience of student teachers. The study focuses on English speaking teacher training institutions where the majority of the student teachers are preparing to teach in English speaking primary schools. Because of the considerable influence of developments in England on South African English speaking teacher training institutions, reading teaching developments in England from 1972 to 1990 are described. The pioneering work of Cook and Moyle provides a background against which subsequent developments in reading teaching are traced. Reports produced by the Department of Education and Science provide many insights into the state of reading teaching in schools in England as well as developments in teacher training. The reading teaching courses at six teacher training institutions are examined - three in England and three in South Africa. The differences are considerable, particularly the amount of time allocated to reading teaching during the four years of initial teacher education and training common to the six institutions. Two cohorts of student teachers review and assess the Rhodes University reading teaching course in terms of the extent of its interest and value for them as prospective teachers, and the amount of time allocated to the course. The most disturbing finding of this study is the nature of reading teaching observed in schools by student teachers. It is suggested that if reading teaching in senior primary schools is to be improved, the deadlocked cycle needs to be broken by education authorities, teachers and teacher trainers resolving the problem jointly.
- Full Text:
- Date Issued: 1992
- Authors: McKellar, David William
- Date: 1992
- Subjects: Reading (Elementary) -- South Africa Reading (Elementary) -- Great Britain Teachers -- Training of -- South Africa Teachers -- Training of -- Great Britain
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:1545 , http://hdl.handle.net/10962/d1003427
- Description: Primary school teachers are expected to teach reading. Whether they are adequately prepared to fulfil this role, particularly for those preparing to teach in the senior primary phase, is the concern of this thesis. Reading teaching models are useful to reading teaching course developers for devising initial training syllabuses. Such models are described, followed by an example of such a syllabus developed at Rhodes University. The Rhodes University model, described early in the thesis, is used as a background for the further consideration of aspects of reading teaching at other institutions. This model is also used as an instrument for assessing the pre-service teaching experience of student teachers. The study focuses on English speaking teacher training institutions where the majority of the student teachers are preparing to teach in English speaking primary schools. Because of the considerable influence of developments in England on South African English speaking teacher training institutions, reading teaching developments in England from 1972 to 1990 are described. The pioneering work of Cook and Moyle provides a background against which subsequent developments in reading teaching are traced. Reports produced by the Department of Education and Science provide many insights into the state of reading teaching in schools in England as well as developments in teacher training. The reading teaching courses at six teacher training institutions are examined - three in England and three in South Africa. The differences are considerable, particularly the amount of time allocated to reading teaching during the four years of initial teacher education and training common to the six institutions. Two cohorts of student teachers review and assess the Rhodes University reading teaching course in terms of the extent of its interest and value for them as prospective teachers, and the amount of time allocated to the course. The most disturbing finding of this study is the nature of reading teaching observed in schools by student teachers. It is suggested that if reading teaching in senior primary schools is to be improved, the deadlocked cycle needs to be broken by education authorities, teachers and teacher trainers resolving the problem jointly.
- Full Text:
- Date Issued: 1992
Neotype description for the African catfish Clarias Gariepinus (Burchell, 1822) (Pisces: Siluroidei: Clariidae)
- Skelton, Paul H (Paul Harvey), Teugels, Guy G
- Authors: Skelton, Paul H (Paul Harvey) , Teugels, Guy G
- Date: 1992
- Subjects: Catfishes -- Africa , Clariidae -- Africa
- Language: English
- Type: Text
- Identifier: vital:14995 , http://hdl.handle.net/10962/d1019675 , ISBN 0-86810-231-8 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 56
- Description: A neotype for Clarias gariepinus (Burchell, 1822) is designated and described. Data from 41 specimens from the type locality are also presented. The geographical distribution of the species is discussed. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1992
- Authors: Skelton, Paul H (Paul Harvey) , Teugels, Guy G
- Date: 1992
- Subjects: Catfishes -- Africa , Clariidae -- Africa
- Language: English
- Type: Text
- Identifier: vital:14995 , http://hdl.handle.net/10962/d1019675 , ISBN 0-86810-231-8 , Ichthyological Bulletin of the J.L.B. Smith Institute of Ichthyology; No. 56
- Description: A neotype for Clarias gariepinus (Burchell, 1822) is designated and described. Data from 41 specimens from the type locality are also presented. The geographical distribution of the species is discussed. , Rhodes University Libraries (Digitisation)
- Full Text:
- Date Issued: 1992