Oxygen isotope geochemistry of the Mesozoic volcanics of the Etendeka Formation, Namibia
- Harris, Christopher, Smith, H Stuart, Milner, Simon C, Erlank, Anthony J, Duncan, Andrew R, Marsh, Julian S, Ikin, Nicholas P
- Authors: Harris, Christopher , Smith, H Stuart , Milner, Simon C , Erlank, Anthony J , Duncan, Andrew R , Marsh, Julian S , Ikin, Nicholas P
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143272 , vital:38219 , https://doi.org/10.1007/BF00371087
- Description: The Etendeka Formation volcanics consist of a bimodal association of basalts and quartz latites. Forty three new whole rock oxygen isotope analyses are reported for all the major magma types. All the rocks except a minor suite of dolerites have higher δ18O values than normal mantle. The basic rocks (average of 29=8.8‰) have significantly different δ18O to the acid rocks (average of 10=14.4‰). These data are apparently consistent with previously published petrogenetic models, which propose that the basalts were affected by crustal contamination and that the quartz latites are crustally derived.
- Full Text: false
- Authors: Harris, Christopher , Smith, H Stuart , Milner, Simon C , Erlank, Anthony J , Duncan, Andrew R , Marsh, Julian S , Ikin, Nicholas P
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143272 , vital:38219 , https://doi.org/10.1007/BF00371087
- Description: The Etendeka Formation volcanics consist of a bimodal association of basalts and quartz latites. Forty three new whole rock oxygen isotope analyses are reported for all the major magma types. All the rocks except a minor suite of dolerites have higher δ18O values than normal mantle. The basic rocks (average of 29=8.8‰) have significantly different δ18O to the acid rocks (average of 10=14.4‰). These data are apparently consistent with previously published petrogenetic models, which propose that the basalts were affected by crustal contamination and that the quartz latites are crustally derived.
- Full Text: false
Parallel process placement
- Authors: Handler, Caroline
- Date: 1989
- Subjects: Parallel programming (Computer science)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4568 , http://hdl.handle.net/10962/d1002033
- Description: This thesis investigates methods of automatic allocation of processes to available processors in a given network configuration. The research described covers the investigation of various algorithms for optimal process allocation. Among those researched were an algorithm which used a branch and bound technique, an algorithm based on graph theory, and an heuristic algorithm involving cluster analysis. These have been implemented and tested in conjunction with the gathering of performance statistics during program execution, for use in improving subsequent allocations. The system has been implemented on a network of loosely-coupled microcomputers using multi-port serial communication links to simulate a transputer network. The concurrent programming language occam has been implemented, replacing the explicit process allocation constructs with an automatic placement algorithm. This enables the source code to be completely separated from hardware considerations
- Full Text:
- Authors: Handler, Caroline
- Date: 1989
- Subjects: Parallel programming (Computer science)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4568 , http://hdl.handle.net/10962/d1002033
- Description: This thesis investigates methods of automatic allocation of processes to available processors in a given network configuration. The research described covers the investigation of various algorithms for optimal process allocation. Among those researched were an algorithm which used a branch and bound technique, an algorithm based on graph theory, and an heuristic algorithm involving cluster analysis. These have been implemented and tested in conjunction with the gathering of performance statistics during program execution, for use in improving subsequent allocations. The system has been implemented on a network of loosely-coupled microcomputers using multi-port serial communication links to simulate a transputer network. The concurrent programming language occam has been implemented, replacing the explicit process allocation constructs with an automatic placement algorithm. This enables the source code to be completely separated from hardware considerations
- Full Text:
Part four of the Rhodes University Skymap Program
- Authors: Wright, Michael Robert
- Date: 1989
- Subjects: Southern sky (Astronomy) Radio astronomy
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5435 , http://hdl.handle.net/10962/d1001988
- Description: The results of the fourth part of the Rhodes University Skymap Program are presented. The observations cover the area of sky between right ascension 14h00m and 02h30m and declination -26⁰ and + 13⁰ at a frequency of 2.3 GHz. Contour maps of this region, with a resolution of 0.38⁰, are presented. Various methods of reducing the effect of the Galactic disc emission are analyzed. The results demonstrate the effectiveness of one of these methods in the production of a flat base level. The filamentary structure of the North Polar Spur is enhanced and results are obtained which support current theories of the origin of this object. The HII region surrounding Ophiuchi is examined in detail. A number of parameters are derived for the HII region. The spur associated with the HII region S54 is also examined. A listing of 1105 point sources appearing in the maps is presented. The limiting flux density of this listing is 0.5 Jy
- Full Text:
- Authors: Wright, Michael Robert
- Date: 1989
- Subjects: Southern sky (Astronomy) Radio astronomy
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5435 , http://hdl.handle.net/10962/d1001988
- Description: The results of the fourth part of the Rhodes University Skymap Program are presented. The observations cover the area of sky between right ascension 14h00m and 02h30m and declination -26⁰ and + 13⁰ at a frequency of 2.3 GHz. Contour maps of this region, with a resolution of 0.38⁰, are presented. Various methods of reducing the effect of the Galactic disc emission are analyzed. The results demonstrate the effectiveness of one of these methods in the production of a flat base level. The filamentary structure of the North Polar Spur is enhanced and results are obtained which support current theories of the origin of this object. The HII region surrounding Ophiuchi is examined in detail. A number of parameters are derived for the HII region. The spur associated with the HII region S54 is also examined. A listing of 1105 point sources appearing in the maps is presented. The limiting flux density of this listing is 0.5 Jy
- Full Text:
Physiological and psychophysical factors in the rating of perceived exertion during uphill overground and treadmill running
- Authors: Olivier, Stephen Chris
- Date: 1989
- Subjects: Physical fitness -- Measurement , Physical fitness -- Physiological aspects , Physical fitness -- Psychological aspects , Running -- Testing
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5161 , http://hdl.handle.net/10962/d1015769
- Description: The purpose of this study was to examine possible differences between the field and laboratory ratings of perceived exertion (RPE) when the performance and physiological measures for the two conditions were equated. Furthermore, the interactive effects of local, central and overall RPE were examined. Finally, the question of the potential effects of attitudes on RPE was addressed. Eleven well-conditioned adult male marathon runners voluntarily participated in the study. After a period of treadmill habituation, biographical and anthropometric data were collected. This was followed by a VO₂ max test and a speed-matching session at 70% of VO₂ max to determine overground running speed at 3.8% and 7. 5% grade. Subjects then completed an attitudinal questionnaire and ran 4km overground. Finally, the above test was repeated on the treadmill, with the gradient and running speed of the overground condition being replicated. Physiological measures and differentiated RPE were obtained during the final two sessions. There were no physical environmental, task characteristic or performance differences between the overground and treadmill conditions. No heart rate or VO₂ differences were observed between the two conditions, but VE was significantly elevated in the laboratory. Local and overall RPE were significantly higher in the laboratory than in the field, but there was no difference for central RPE. Attitudes were more favourable towards the field than towards the laboratory work task. The results suggest that neither heart rate nor VO₂ are major factors directly influencing the perception of exertion. VE however appears to be a potent central signal mediating RPE. The results also indicate that local factors play a more important role in the perception of exertion than was previously thought. Attitudes towards a work task could possibly mediate the self-reports of exertion. The findings of this study also suggest that RPE are influenced by cognition to a large degree. Finally, environmental cues, or the ambience of a particular working environment, can exert a substantial influence on RPE. Direct perceptual translations from laboratory to field situations may therefore be invalid.
- Full Text:
- Authors: Olivier, Stephen Chris
- Date: 1989
- Subjects: Physical fitness -- Measurement , Physical fitness -- Physiological aspects , Physical fitness -- Psychological aspects , Running -- Testing
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5161 , http://hdl.handle.net/10962/d1015769
- Description: The purpose of this study was to examine possible differences between the field and laboratory ratings of perceived exertion (RPE) when the performance and physiological measures for the two conditions were equated. Furthermore, the interactive effects of local, central and overall RPE were examined. Finally, the question of the potential effects of attitudes on RPE was addressed. Eleven well-conditioned adult male marathon runners voluntarily participated in the study. After a period of treadmill habituation, biographical and anthropometric data were collected. This was followed by a VO₂ max test and a speed-matching session at 70% of VO₂ max to determine overground running speed at 3.8% and 7. 5% grade. Subjects then completed an attitudinal questionnaire and ran 4km overground. Finally, the above test was repeated on the treadmill, with the gradient and running speed of the overground condition being replicated. Physiological measures and differentiated RPE were obtained during the final two sessions. There were no physical environmental, task characteristic or performance differences between the overground and treadmill conditions. No heart rate or VO₂ differences were observed between the two conditions, but VE was significantly elevated in the laboratory. Local and overall RPE were significantly higher in the laboratory than in the field, but there was no difference for central RPE. Attitudes were more favourable towards the field than towards the laboratory work task. The results suggest that neither heart rate nor VO₂ are major factors directly influencing the perception of exertion. VE however appears to be a potent central signal mediating RPE. The results also indicate that local factors play a more important role in the perception of exertion than was previously thought. Attitudes towards a work task could possibly mediate the self-reports of exertion. The findings of this study also suggest that RPE are influenced by cognition to a large degree. Finally, environmental cues, or the ambience of a particular working environment, can exert a substantial influence on RPE. Direct perceptual translations from laboratory to field situations may therefore be invalid.
- Full Text:
Plants - yesterday, today, tomorrow? : inaugural lecture delivered at Rhodes University
- Botha, Christiaan Edward Johannes
- Authors: Botha, Christiaan Edward Johannes
- Date: 1989
- Subjects: Botany
- Language: English
- Type: Text
- Identifier: vital:603 , http://hdl.handle.net/10962/d1020672 , ISBN 0868101931
- Description: Inaugural lecture delivered at Rhodes University. , Rhodes University Libraries (Digitisation)
- Full Text:
- Authors: Botha, Christiaan Edward Johannes
- Date: 1989
- Subjects: Botany
- Language: English
- Type: Text
- Identifier: vital:603 , http://hdl.handle.net/10962/d1020672 , ISBN 0868101931
- Description: Inaugural lecture delivered at Rhodes University. , Rhodes University Libraries (Digitisation)
- Full Text:
POTWA Newsletter - Northern Cape Congress
- Post and Telecommunication Workers Association (POTWA)
- Authors: Post and Telecommunication Workers Association (POTWA)
- Date: 1989
- Subjects: POTWA
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/162032 , vital:40750
- Description: The Northern Cape Region of Potwa held a very vibrant regional congress in Vryburg on the 15 & 16 April 1989. The Congress was characterised by a spirit of comradely self-criticism. This political maturity of the comrades went as far as to give a proper critical analysis of the structures of our organisation. The analysis accepted that the functioning of some of our organisation’s structures is not up to standard. The congress also noted that the participation of the general membership in the activities of the organisation is not satisfactory. As it is typical of matured comrades, the congress realised that such problems are not peculiar to Potwa. Shortcomings such as these are indicative of a huge and growing organisation. Because of this, the comrades explored ways and means of solving these problems. The congress concluded that the opening of a regional office combined with effective usage of our Potwa newsletter would go a long way in solving some of our problems.
- Full Text:
- Authors: Post and Telecommunication Workers Association (POTWA)
- Date: 1989
- Subjects: POTWA
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/162032 , vital:40750
- Description: The Northern Cape Region of Potwa held a very vibrant regional congress in Vryburg on the 15 & 16 April 1989. The Congress was characterised by a spirit of comradely self-criticism. This political maturity of the comrades went as far as to give a proper critical analysis of the structures of our organisation. The analysis accepted that the functioning of some of our organisation’s structures is not up to standard. The congress also noted that the participation of the general membership in the activities of the organisation is not satisfactory. As it is typical of matured comrades, the congress realised that such problems are not peculiar to Potwa. Shortcomings such as these are indicative of a huge and growing organisation. Because of this, the comrades explored ways and means of solving these problems. The congress concluded that the opening of a regional office combined with effective usage of our Potwa newsletter would go a long way in solving some of our problems.
- Full Text:
Primêre leerlinge se geskiedenispotentiaal: 'n empiriese ondersoek na senior primêre leerlinge en onderwysers se vermoë om indringende vrae oor 'n historiese gebeurtenis met begrip en insig te beantwoord
- Authors: Hattingh, Johannes Hendrik
- Date: 1989
- Subjects: History -- Study and teaching (Elementary)
- Language: Afrikaans
- Type: text , Thesis , Masters , MEd
- Identifier: vital:1362 , http://hdl.handle.net/10962/d1001428
- Description: The main aim of this research was to determine the potential of senior primary pupils and serving teachers to understand a text that is concerned with a historical event. A test was written by 136 white standard 3, 4 and 5 pupils from a Cape Province primary school, as well as 32 serving teachers from various other Cape Province primary schools. The test consisted of a text and questions based upon it. The testees had 60 minutes at their disposal to study the text and give written answers to the questions. The historical event explained in the text dealt with the Peasant Uprising that occurred in England in 1381. Eight open-ended questions were asked. The questions were graded according to difficulty and based on the model of Merrit to test the following levels of thought: knowledge, application, inference and evaluation. In the dissertation attention is paid to the following aspects: 1. Background for the research. 2. The most important theoretical aspects that play a role in the process of historical understanding. 3. A statistlcal analysis of the results obtained from the pupils and teachers, with attention to those factors that may have influenced the results e.g. verbal IQ, age, interest, etc. 4. The quality of the teachers' and pupils' answers as well as examples from their work to illustrate certain aspects. 5. The most important conclusions that can be drawn from the research. Based on their answers to the graded questions the pupils were grouped into different levels to ascertain whether a significant pattern would emerge for each standard. It became clear, however, that irrespective of age or verbal IQ the pupils could not consistently be grouped into a specific level or category. The most important conclusions of the research are the following: 1. The ability of senior primary pupils to cope with intellectually stimulating material are underestimated. 2. A variety of factors influenced the results of the pupils, but not one of the factors studied in this research was found to be of significant importance. 3. The average primary teacher do have the potential ability to cope with more difficult historical material than the present factual approach would suggest.
- Full Text:
- Authors: Hattingh, Johannes Hendrik
- Date: 1989
- Subjects: History -- Study and teaching (Elementary)
- Language: Afrikaans
- Type: text , Thesis , Masters , MEd
- Identifier: vital:1362 , http://hdl.handle.net/10962/d1001428
- Description: The main aim of this research was to determine the potential of senior primary pupils and serving teachers to understand a text that is concerned with a historical event. A test was written by 136 white standard 3, 4 and 5 pupils from a Cape Province primary school, as well as 32 serving teachers from various other Cape Province primary schools. The test consisted of a text and questions based upon it. The testees had 60 minutes at their disposal to study the text and give written answers to the questions. The historical event explained in the text dealt with the Peasant Uprising that occurred in England in 1381. Eight open-ended questions were asked. The questions were graded according to difficulty and based on the model of Merrit to test the following levels of thought: knowledge, application, inference and evaluation. In the dissertation attention is paid to the following aspects: 1. Background for the research. 2. The most important theoretical aspects that play a role in the process of historical understanding. 3. A statistlcal analysis of the results obtained from the pupils and teachers, with attention to those factors that may have influenced the results e.g. verbal IQ, age, interest, etc. 4. The quality of the teachers' and pupils' answers as well as examples from their work to illustrate certain aspects. 5. The most important conclusions that can be drawn from the research. Based on their answers to the graded questions the pupils were grouped into different levels to ascertain whether a significant pattern would emerge for each standard. It became clear, however, that irrespective of age or verbal IQ the pupils could not consistently be grouped into a specific level or category. The most important conclusions of the research are the following: 1. The ability of senior primary pupils to cope with intellectually stimulating material are underestimated. 2. A variety of factors influenced the results of the pupils, but not one of the factors studied in this research was found to be of significant importance. 3. The average primary teacher do have the potential ability to cope with more difficult historical material than the present factual approach would suggest.
- Full Text:
Rainfall characteristics, rainfall reliability and the definition of drought : Baringo district, Kenya
- Authors: Rowntree, Kate M
- Date: 1989
- Language: English
- Type: Article
- Identifier: vital:6724 , http://hdl.handle.net/10962/d1006802
- Description: Monthly rainfall data for Kabarnet District Office, together with comments taken from the Baringo District Annual Report, are used here to examine the relationship between rainfall characteristics and agricultural drought experienced over the period 1915 to 1943 in order to establish the meteorological criteria for a definition of drought applicable to the former Kerio Native Land Unit, Baringo District, Kenya. The concept of reliable rainfall as a drought threshold is also examined. The analysis shows that the occurrence of drought was related to both the rainfall total and to the seasonal distribution. The meteorological criteria for drought and for reliable rainfall were found to differ between the upland cultivators and the lowland pastoralists, the latter experiencing a higher frequency of drought.
- Full Text: false
- Authors: Rowntree, Kate M
- Date: 1989
- Language: English
- Type: Article
- Identifier: vital:6724 , http://hdl.handle.net/10962/d1006802
- Description: Monthly rainfall data for Kabarnet District Office, together with comments taken from the Baringo District Annual Report, are used here to examine the relationship between rainfall characteristics and agricultural drought experienced over the period 1915 to 1943 in order to establish the meteorological criteria for a definition of drought applicable to the former Kerio Native Land Unit, Baringo District, Kenya. The concept of reliable rainfall as a drought threshold is also examined. The analysis shows that the occurrence of drought was related to both the rainfall total and to the seasonal distribution. The meteorological criteria for drought and for reliable rainfall were found to differ between the upland cultivators and the lowland pastoralists, the latter experiencing a higher frequency of drought.
- Full Text: false
Regional development administration and management in Region D
- Authors: Davies, William J
- Date: 1989
- Subjects: Regional planning -- South Africa -- Ciskei Regional planning -- South Africa -- Transkei Bathurst (South Africa) -- Population Transkei (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2378 , vital:20283 , ISBN 0868101885
- Description: The process of managing and administering regional development in South Africa is in need of drastic revision. Exactly what form such revision takes, however, is not yet clear. The extent to which the structure and organisation of regional development programmes is intricately associated with the ideological principles of macro-apartheid is part of the problem and a great deal of work requires to be done in order to arrive at proposals which could constitute points of departure for constructing a new approach. This research is a small step in that direction and should be seen as a means to an end in an on-going process. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Authors: Davies, William J
- Date: 1989
- Subjects: Regional planning -- South Africa -- Ciskei Regional planning -- South Africa -- Transkei Bathurst (South Africa) -- Population Transkei (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2378 , vital:20283 , ISBN 0868101885
- Description: The process of managing and administering regional development in South Africa is in need of drastic revision. Exactly what form such revision takes, however, is not yet clear. The extent to which the structure and organisation of regional development programmes is intricately associated with the ideological principles of macro-apartheid is part of the problem and a great deal of work requires to be done in order to arrive at proposals which could constitute points of departure for constructing a new approach. This research is a small step in that direction and should be seen as a means to an end in an on-going process. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
Rhodes University Graduation Ceremony 1989
- Authors: Rhodes University
- Date: 1989
- Language: English
- Type: text
- Identifier: vital:8123 , http://hdl.handle.net/10962/d1005706
- Description: Rhodes University Graduation Ceremonies on Friday, 7 April 1989 at 8 p.m. [and] on Saturday, 8 April 1989 at 10 a.m. in the 1820 Settlers National Monument. , Rhodes University East London Graduation Ceremony Saturday; 13 May 1989 at 11.30 a.m. in the Guild Theatre.
- Full Text:
- Authors: Rhodes University
- Date: 1989
- Language: English
- Type: text
- Identifier: vital:8123 , http://hdl.handle.net/10962/d1005706
- Description: Rhodes University Graduation Ceremonies on Friday, 7 April 1989 at 8 p.m. [and] on Saturday, 8 April 1989 at 10 a.m. in the 1820 Settlers National Monument. , Rhodes University East London Graduation Ceremony Saturday; 13 May 1989 at 11.30 a.m. in the Guild Theatre.
- Full Text:
Role of agricultural marketing in transforming subsistence agriculture: African Case Study
- Antrobus, Geoffrey G, Fraser, Gavin C G
- Authors: Antrobus, Geoffrey G , Fraser, Gavin C G
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143112 , vital:38202 , https://ageconsearch.umn.edu/record/197714/
- Description: A lack of agricultural marketing facilities is generally seen as one of the major obstacles to agricultural development. However, subsistence producers in southern Africa are influenced by certain exogeneous factors, such as competition from commercial production, the well-developed marketing system, and off-farm employment opportunities in South Africa. This paper studies the effect of the institution of an organized marketing system in Ciskei on the level of agricultural production. This is found to have had no significant effect because the majority of the able-bodied males are working in the metropolitan areas of South Africa. This has resulted in agriculture becoming a part-time supplementary activity for women, old men, and children in the rural areas.
- Full Text:
- Authors: Antrobus, Geoffrey G , Fraser, Gavin C G
- Date: 1989
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/143112 , vital:38202 , https://ageconsearch.umn.edu/record/197714/
- Description: A lack of agricultural marketing facilities is generally seen as one of the major obstacles to agricultural development. However, subsistence producers in southern Africa are influenced by certain exogeneous factors, such as competition from commercial production, the well-developed marketing system, and off-farm employment opportunities in South Africa. This paper studies the effect of the institution of an organized marketing system in Ciskei on the level of agricultural production. This is found to have had no significant effect because the majority of the able-bodied males are working in the metropolitan areas of South Africa. This has resulted in agriculture becoming a part-time supplementary activity for women, old men, and children in the rural areas.
- Full Text:
Roy Holland, Insights and Outsights. Cape Town David Philip, 1989. Book Review
- Authors: Wylie, Dan
- Date: 1989
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/460504 , vital:75943 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_183
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
- Authors: Wylie, Dan
- Date: 1989
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/460504 , vital:75943 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_183
- Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
- Full Text:
Satchitananda' : meditation and dance around the still point, in the form of a raga performance for piano solo : inaugural lecture/recital delivered at Rhodes University
- Authors: Nowotny, Norbert W
- Date: 1989
- Subjects: Music -- Instruction and study
- Language: English
- Type: Text
- Identifier: vital:656 , http://hdl.handle.net/10962/d1020725 , ISBN 0868101923
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
- Authors: Nowotny, Norbert W
- Date: 1989
- Subjects: Music -- Instruction and study
- Language: English
- Type: Text
- Identifier: vital:656 , http://hdl.handle.net/10962/d1020725 , ISBN 0868101923
- Description: Inaugural lecture delivered at Rhodes University , Rhodes University Libraries (Digitisation)
- Full Text:
Seasonal changes in the physiological and hormonal aspects of reproduction in the male long-fingered bat, Miniopterus schreibersii (Mammalia : Chiroptera)
- Authors: Paton, Joy Carol
- Date: 1989
- Subjects: Bats -- Reproduction
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5590 , http://hdl.handle.net/10962/d1002040
- Description: The reproductive cycle of Miniopterus schreibersii is modified as a consequence of a period of torpor/hibernation over the winter months. This bat is one of three genera which employ the reproductive strategy of delayed implantation in which the blastocyst remains free in the uterine lumen during the winter months. Spermatogenesis is initiated in February, with spermiogenesis occuring in March. Copulation, ovulation and fertilization takes place between March and May after which the testes regress and remain in an inactive condition until the following summer. Activity in the accessory gland complex is initiated in March and continues until early June. Plasma testosterone concentrations reach a peak in May, decline over the winter months and reach a second, unexplainable peak in October. Leydig cells are secretorily active in February/early March after which they undergo vacuolation and final degeneration. The question of the life cyle of Leydig cells is addressed and an increase in a certain cell after Leydig cell activity suggests that this cell type may be the precursor of Leydig cells.
- Full Text:
- Authors: Paton, Joy Carol
- Date: 1989
- Subjects: Bats -- Reproduction
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5590 , http://hdl.handle.net/10962/d1002040
- Description: The reproductive cycle of Miniopterus schreibersii is modified as a consequence of a period of torpor/hibernation over the winter months. This bat is one of three genera which employ the reproductive strategy of delayed implantation in which the blastocyst remains free in the uterine lumen during the winter months. Spermatogenesis is initiated in February, with spermiogenesis occuring in March. Copulation, ovulation and fertilization takes place between March and May after which the testes regress and remain in an inactive condition until the following summer. Activity in the accessory gland complex is initiated in March and continues until early June. Plasma testosterone concentrations reach a peak in May, decline over the winter months and reach a second, unexplainable peak in October. Leydig cells are secretorily active in February/early March after which they undergo vacuolation and final degeneration. The question of the life cyle of Leydig cells is addressed and an increase in a certain cell after Leydig cell activity suggests that this cell type may be the precursor of Leydig cells.
- Full Text:
Shakespeare, Webster and the Moriturus Lyric in Renaissance England
- Authors: Gouws, John S
- Date: 1989
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/457869 , vital:75686 , https://hdl.handle.net/10520/AJA1011582X_75
- Description: It is perhaps a commonplace that the dying will register their experience as a lingering on a threshold, but it is remarkable, in the first place, to record that awareness in a poem, and, in the second place, to insist that the poem be placed at the end of the book. As I hope to show in the course of this discussion, the notion of writing a poem in the face of imminent death is not uncommon in the Renaissance; in fact, the act of doing so is one of the manifestations of a" good death", a mode of" self-fashioning" not restricted to poets. What is unusual and innovative about the Waller example is the inauguration of the self-consciously placed poem in the collected works of a poet, an act which leads inevi-tably to the most famous instance, Tennyson's" Crossing the Bar". Two Emily Dickinson poems suggest that in the nineteenth century the genre was sufficiently established to invite variant forms. In" I heard a Fly buzz-when I died-", the speaker recounts the experience of diminishing consciousness, and in" Because I could not stop for Death-" she crosses the threshold into the next world.'The latler poem of course al-so makes use of the" Death and the Maiden"(the rape of Persephone) motif, and so goes well beyond what can be regarded as a true moritu-rus lyric.
- Full Text:
- Authors: Gouws, John S
- Date: 1989
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/457869 , vital:75686 , https://hdl.handle.net/10520/AJA1011582X_75
- Description: It is perhaps a commonplace that the dying will register their experience as a lingering on a threshold, but it is remarkable, in the first place, to record that awareness in a poem, and, in the second place, to insist that the poem be placed at the end of the book. As I hope to show in the course of this discussion, the notion of writing a poem in the face of imminent death is not uncommon in the Renaissance; in fact, the act of doing so is one of the manifestations of a" good death", a mode of" self-fashioning" not restricted to poets. What is unusual and innovative about the Waller example is the inauguration of the self-consciously placed poem in the collected works of a poet, an act which leads inevi-tably to the most famous instance, Tennyson's" Crossing the Bar". Two Emily Dickinson poems suggest that in the nineteenth century the genre was sufficiently established to invite variant forms. In" I heard a Fly buzz-when I died-", the speaker recounts the experience of diminishing consciousness, and in" Because I could not stop for Death-" she crosses the threshold into the next world.'The latler poem of course al-so makes use of the" Death and the Maiden"(the rape of Persephone) motif, and so goes well beyond what can be regarded as a true moritu-rus lyric.
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Sinxunguphele: a survey of Black attitudes towards South Africa's third State of Emergency in the Eastern Cape
- Authors: De Villiers, Melissa
- Date: 1989
- Subjects: United Democratic Front (South Africa) Alexandria (Cape Province) Africans -- Government relations Freedom of movement Local government -- South Africa -- Eastern Cape Nomzamo Student Guardian Association Nkwinti, Gugile Port Alfred Youth Congress Alexandria Youth Congress (Cape Province) Port Alfred Residents' Civic Association Port Alfred (South Africa) War and emergency legislation -- South Africa
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2025 , vital:20248 , ISBN 086810177X
- Description: On June 12, 1986, the South African government responded to a strong upsurge in popular resistance with an intensive security crackdown. It is estimated that between 25 000 and 40 000 so- called extra-parliamentary opponents were detained during the first twelve months of South Africa's third state of emergency. These detentions, plus a range of other repressive devices, were part of a determined campaign on the part of the state to reorientate the political process in favour of white domination. There can be little doubt that this third state of emergency, two years old in June 1988, has halted - albeit temporarily - the erosion of the state's authority. Extra-parliamentary opposition has been bruised. Yet Pretoria's purpose is not merely to secure the grudging compliance of a submissive and sullen black community. The government's longer-term aim is to create a climate in which selected "moderate" black groups can be persuaded to endorse a reformed version of the present, apartheid-based, constitution. This report is largely based on the findings of an attitudinal survey of township residents in two Eastern Cape towns which was conducted one year after the third emergency was declared. A considerable volume of information on repression in the Eastern Cape - and, particularly, social conflict emanating from the actions of officials of the state - has been gathered over the past three years by organisations of lawyers, church bodies, local communities, and support and monitoring groups such as the Black Sash. Much of this is in the form of signed statements by eye-witnesses, newspaper reports, and documentation from political trials. However, up to this point no empirical study of any scale of such conditions in the region has been undertaken. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
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- Authors: De Villiers, Melissa
- Date: 1989
- Subjects: United Democratic Front (South Africa) Alexandria (Cape Province) Africans -- Government relations Freedom of movement Local government -- South Africa -- Eastern Cape Nomzamo Student Guardian Association Nkwinti, Gugile Port Alfred Youth Congress Alexandria Youth Congress (Cape Province) Port Alfred Residents' Civic Association Port Alfred (South Africa) War and emergency legislation -- South Africa
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2025 , vital:20248 , ISBN 086810177X
- Description: On June 12, 1986, the South African government responded to a strong upsurge in popular resistance with an intensive security crackdown. It is estimated that between 25 000 and 40 000 so- called extra-parliamentary opponents were detained during the first twelve months of South Africa's third state of emergency. These detentions, plus a range of other repressive devices, were part of a determined campaign on the part of the state to reorientate the political process in favour of white domination. There can be little doubt that this third state of emergency, two years old in June 1988, has halted - albeit temporarily - the erosion of the state's authority. Extra-parliamentary opposition has been bruised. Yet Pretoria's purpose is not merely to secure the grudging compliance of a submissive and sullen black community. The government's longer-term aim is to create a climate in which selected "moderate" black groups can be persuaded to endorse a reformed version of the present, apartheid-based, constitution. This report is largely based on the findings of an attitudinal survey of township residents in two Eastern Cape towns which was conducted one year after the third emergency was declared. A considerable volume of information on repression in the Eastern Cape - and, particularly, social conflict emanating from the actions of officials of the state - has been gathered over the past three years by organisations of lawyers, church bodies, local communities, and support and monitoring groups such as the Black Sash. Much of this is in the form of signed statements by eye-witnesses, newspaper reports, and documentation from political trials. However, up to this point no empirical study of any scale of such conditions in the region has been undertaken. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
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Social structure and rural economic development
- Authors: Berger, Guy
- Date: 1989
- Subjects: Social structure -- Developing countries , Rural development-- Developing countries
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2864 , http://hdl.handle.net/10962/d1007643
- Description: New concepts and a synthesis of existing theories may assist in studying the relationship between social structure, development and rural development. The concept of social structure encompasses the concept of economic structure which may be analysed in terms of three "Moments" of production. On this basis, one can distinguish between heterogeneous and homogeneous relations of production structures. "Homogeneous relations" together with "system dynamics" and ''reproduction", define the concept of a mode of production. "Development" refers to the expansion of total productive capacity, premissed on advanced means of production, and corresponding to the particular relations and forces of production in an economic system. The capitalist mode of production has both tendencies and countertendencies to development. The latter prevail in the Third World due to the admixture and heterogeneity of production relations there, and to their subordinate articulation within an international capitalist economic system. In this context, underdevelopment is the result of the specific factors of monopoly competition, dependence-extraversion, disarticulation-unevenness, the three-tier structure of the peripheral economy, surplus transfer, and class structures and struggles. Rural development can be understood in terms of the specific contribution of agriculture to development, theorized as the "Agrarian Question". Agrarian capitalism has been slow to develop in the Third World, and the state of agriculture remains a problem there. "Rural development" has emerged as a deliberate and interventionist state strategy designed to restructure agrarian relations for development. This has contributed to the formation of particular heterogeneous relations of production articulated to the capitalist mode. In this context, the character of the associated classes has left the Agrarian Question unresolved. "Rural development" continues because it has an important~ and even primary, political significance - although this is not without contradictions.
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- Authors: Berger, Guy
- Date: 1989
- Subjects: Social structure -- Developing countries , Rural development-- Developing countries
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2864 , http://hdl.handle.net/10962/d1007643
- Description: New concepts and a synthesis of existing theories may assist in studying the relationship between social structure, development and rural development. The concept of social structure encompasses the concept of economic structure which may be analysed in terms of three "Moments" of production. On this basis, one can distinguish between heterogeneous and homogeneous relations of production structures. "Homogeneous relations" together with "system dynamics" and ''reproduction", define the concept of a mode of production. "Development" refers to the expansion of total productive capacity, premissed on advanced means of production, and corresponding to the particular relations and forces of production in an economic system. The capitalist mode of production has both tendencies and countertendencies to development. The latter prevail in the Third World due to the admixture and heterogeneity of production relations there, and to their subordinate articulation within an international capitalist economic system. In this context, underdevelopment is the result of the specific factors of monopoly competition, dependence-extraversion, disarticulation-unevenness, the three-tier structure of the peripheral economy, surplus transfer, and class structures and struggles. Rural development can be understood in terms of the specific contribution of agriculture to development, theorized as the "Agrarian Question". Agrarian capitalism has been slow to develop in the Third World, and the state of agriculture remains a problem there. "Rural development" has emerged as a deliberate and interventionist state strategy designed to restructure agrarian relations for development. This has contributed to the formation of particular heterogeneous relations of production articulated to the capitalist mode. In this context, the character of the associated classes has left the Agrarian Question unresolved. "Rural development" continues because it has an important~ and even primary, political significance - although this is not without contradictions.
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Some reading problems encountered by Ciskeian second language English readers in subject content areas, with special reference to geography at the Standard Six level
- Authors: Pillay, Lionel Franklin
- Date: 1989
- Subjects: Content area reading , Language arts -- Correlation with content subjects , Language and education , Geography -- Study and teaching (Secondary) , English language -- Study and teaching -- Foreign speakers
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: vital:1368 , http://hdl.handle.net/10962/d1001434
- Description: Since in our educational system a great deal of learning is supposedly dependant upon a child's ability to read and assimilate information from textbooks, this study investigated what reading skills are required by a second language reader of English to read textbooks with comprehension and understanding in relation to the reading skills of a competent reader and how Ciskeian Standard 6 pupils perform in relation to a Geography text prescribed at that level. A test, designed to measure eight reading comprehension skills, was given to a sample of 250 children from four schools in Zwelitsha, Ciskei, to establish whether the subjects are able to: a) give the literal meaning of words; b) derive the appropriate meaning of an ambiguous word from the context in which it appears; c) find answers to questions by making direct reference to the text; d) identify the major points and details in a text; e) use the information in the text to predict what the writer is going to talk about next; f) find the referent for anaphoric terms; g) use discourse markers to predict information/meaning to come, and see the relationships between what they have just read and what they are about to read; h) activate and use the background knowledge and schemata that they have to understand the text topic.The results of this study indicate that these children are: a) unfamiliar with the structure of expository texts; b) linguistically bound to a text and that they fail to use linguistic and contextual clues even when they are explicit in the text. The study also shows that the ability to make inferences and predictions is determined to a large extent by the prior knowledge and background experience that a pupil brings with him to the text and by his ability to activate that background knowledge. The findings suggest that in the English classroom, in an English as a second language (L2) medium situation, the L2 teacher has a responsibility to prepare the child for the study, which includes reading, writing, listening and speaking, of all subjects across the curriculum through the second language, which is the medium of instruction
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- Authors: Pillay, Lionel Franklin
- Date: 1989
- Subjects: Content area reading , Language arts -- Correlation with content subjects , Language and education , Geography -- Study and teaching (Secondary) , English language -- Study and teaching -- Foreign speakers
- Language: English
- Type: text , Thesis , Masters , MEd
- Identifier: vital:1368 , http://hdl.handle.net/10962/d1001434
- Description: Since in our educational system a great deal of learning is supposedly dependant upon a child's ability to read and assimilate information from textbooks, this study investigated what reading skills are required by a second language reader of English to read textbooks with comprehension and understanding in relation to the reading skills of a competent reader and how Ciskeian Standard 6 pupils perform in relation to a Geography text prescribed at that level. A test, designed to measure eight reading comprehension skills, was given to a sample of 250 children from four schools in Zwelitsha, Ciskei, to establish whether the subjects are able to: a) give the literal meaning of words; b) derive the appropriate meaning of an ambiguous word from the context in which it appears; c) find answers to questions by making direct reference to the text; d) identify the major points and details in a text; e) use the information in the text to predict what the writer is going to talk about next; f) find the referent for anaphoric terms; g) use discourse markers to predict information/meaning to come, and see the relationships between what they have just read and what they are about to read; h) activate and use the background knowledge and schemata that they have to understand the text topic.The results of this study indicate that these children are: a) unfamiliar with the structure of expository texts; b) linguistically bound to a text and that they fail to use linguistic and contextual clues even when they are explicit in the text. The study also shows that the ability to make inferences and predictions is determined to a large extent by the prior knowledge and background experience that a pupil brings with him to the text and by his ability to activate that background knowledge. The findings suggest that in the English classroom, in an English as a second language (L2) medium situation, the L2 teacher has a responsibility to prepare the child for the study, which includes reading, writing, listening and speaking, of all subjects across the curriculum through the second language, which is the medium of instruction
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Studying history by correspondence : assessment of the work at the Graaff-Reinet College for Continued Education
- Authors: Van Niekerk, Clive
- Date: 1989
- Subjects: History -- Study and teaching , Teachers -- In-service training -- South Africa , Distance education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1369 , http://hdl.handle.net/10962/d1001435
- Description: The aim of this study was to carry out an investigation of history as a correspondence subject for practising teachers and to make an assessment of work at the Graaff- Reinet College for Continued Training. The problems experienced by lecturers and students involved with the study of history at this institution receive particular attention. At intervals throughout the study attention is given to the need for further training for teachers who are in- service. Teacher qualifications in the Cape Province are also examined to see potential needs for further training in the future. Having determined a need, it is proposed that correspondence courses are best suited to cater for it. A study is made of the models, background and approaches used by other institutions in various parts of the world. Distance education started in England at the end of the eighteenth century. This idea has spread to various countries and today teaching and learning by correspondence takes place in most countries of the world. It is different to conventional classroom education and thus has certain unique characteristics. The definition, characteristics, background and methodology are important if the problems involved are to be understood. These aspects indicate how effective and popular this form of study has become. Particular attention is given to the teaching of in-service teachers who are upgrading their qualifications. The existing and proposed College history syllabi are examined in as far as their appropriateness and relevance are concerned. Emphasis is given to history at Graaff- Reinet College because the author is a history lecturer at this institution. An extended questionnaire was designed and used to collect the required data on the subjects who were from two groups of students studying history at the College, one in 1986 and one in 1987. A pilot study was done in 1986 and a more extended questionnaire was completed by the 1987 students. In chapter six the results of the questionnaire are analysed and particular attention is given to the students' background, motivation for studying and difficulties they encounter. Finally, recommendations are made about how this form of teacher upgrading can be improved and extended in the future
- Full Text:
- Authors: Van Niekerk, Clive
- Date: 1989
- Subjects: History -- Study and teaching , Teachers -- In-service training -- South Africa , Distance education -- South Africa
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1369 , http://hdl.handle.net/10962/d1001435
- Description: The aim of this study was to carry out an investigation of history as a correspondence subject for practising teachers and to make an assessment of work at the Graaff- Reinet College for Continued Training. The problems experienced by lecturers and students involved with the study of history at this institution receive particular attention. At intervals throughout the study attention is given to the need for further training for teachers who are in- service. Teacher qualifications in the Cape Province are also examined to see potential needs for further training in the future. Having determined a need, it is proposed that correspondence courses are best suited to cater for it. A study is made of the models, background and approaches used by other institutions in various parts of the world. Distance education started in England at the end of the eighteenth century. This idea has spread to various countries and today teaching and learning by correspondence takes place in most countries of the world. It is different to conventional classroom education and thus has certain unique characteristics. The definition, characteristics, background and methodology are important if the problems involved are to be understood. These aspects indicate how effective and popular this form of study has become. Particular attention is given to the teaching of in-service teachers who are upgrading their qualifications. The existing and proposed College history syllabi are examined in as far as their appropriateness and relevance are concerned. Emphasis is given to history at Graaff- Reinet College because the author is a history lecturer at this institution. An extended questionnaire was designed and used to collect the required data on the subjects who were from two groups of students studying history at the College, one in 1986 and one in 1987. A pilot study was done in 1986 and a more extended questionnaire was completed by the 1987 students. In chapter six the results of the questionnaire are analysed and particular attention is given to the students' background, motivation for studying and difficulties they encounter. Finally, recommendations are made about how this form of teacher upgrading can be improved and extended in the future
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Syllabus differentiation in mathematics in Ciskei : the reality as against intention
- Deliwe, Mawonga Christopher Columbus
- Authors: Deliwe, Mawonga Christopher Columbus
- Date: 1989
- Subjects: Mathematics -- Study and teaching (Secondary) -- South Africa -- Ciskei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1370 , http://hdl.handle.net/10962/d1001436
- Description: The topic of this half-thesis was conceived after the author had noted with interest, that an alarmingly high number of pupils in the Mdantsane Central District of the Ciskei were registering for Higher Grade (HG) mathematics for their final (Standard 10) year. What mattered most was that the failure rate was abnormally high. As a teacher of the subject for 14 years as at the end of 1988, the author had seen very weak pupils passing through his hands who had nevertheless insisted on registering for the examination in HG mathematics. A look through the Human Sciences Research Council (HSRC) Report of 1971 which recommended the syllabus differentiation, revealed that the intention of the relevant HSRC Committee was to offer a subject at a level in accordance with a pupil's interest, aptitude and ability. In a survey undertaken by the author, samples of teachers, pupils and parents indeed confirmed the existence of a very high number of HG candidates, as suspected. The survey also revealed an aversion to the standard grade (SG) course by some pupils, teachers and even principals. A desire for university education was shown to be in the minds of most pupil respondents. Well sourced registration statistics clearly showed that the Department of Education and Training (DET) in the Republic of South Africa and the Department of Education in the Ciskei had by far the greatest proportion of pupils on the HG in mathematics in comparison with the other race groups.Standard 10 (Std 10) results for two years taken separately confirmed the author's suspicion that aptitude and/or ability were not taken into consideration by most pupils, in the choice of grade. The results were not good at all. In most cases the uninformed pupil was acting alone in taking the important decision, perhaps with only peer group pressure to contend with. Three independent opinions suggested that there was probably a general feeling that Black education was already inferior, even without the syllabus differentiation hence the reluctance to register for the SG option. Furthermore, the investigation indicated that there was no adequate provision for technical education for Blacks in either the RSA or Ciskei which would provide the alternative to a university career for a pupiL Amongst other things, a mild form of pupil screening and a well structured careers guidance programme are suggested in the concluding chapters
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- Authors: Deliwe, Mawonga Christopher Columbus
- Date: 1989
- Subjects: Mathematics -- Study and teaching (Secondary) -- South Africa -- Ciskei
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1370 , http://hdl.handle.net/10962/d1001436
- Description: The topic of this half-thesis was conceived after the author had noted with interest, that an alarmingly high number of pupils in the Mdantsane Central District of the Ciskei were registering for Higher Grade (HG) mathematics for their final (Standard 10) year. What mattered most was that the failure rate was abnormally high. As a teacher of the subject for 14 years as at the end of 1988, the author had seen very weak pupils passing through his hands who had nevertheless insisted on registering for the examination in HG mathematics. A look through the Human Sciences Research Council (HSRC) Report of 1971 which recommended the syllabus differentiation, revealed that the intention of the relevant HSRC Committee was to offer a subject at a level in accordance with a pupil's interest, aptitude and ability. In a survey undertaken by the author, samples of teachers, pupils and parents indeed confirmed the existence of a very high number of HG candidates, as suspected. The survey also revealed an aversion to the standard grade (SG) course by some pupils, teachers and even principals. A desire for university education was shown to be in the minds of most pupil respondents. Well sourced registration statistics clearly showed that the Department of Education and Training (DET) in the Republic of South Africa and the Department of Education in the Ciskei had by far the greatest proportion of pupils on the HG in mathematics in comparison with the other race groups.Standard 10 (Std 10) results for two years taken separately confirmed the author's suspicion that aptitude and/or ability were not taken into consideration by most pupils, in the choice of grade. The results were not good at all. In most cases the uninformed pupil was acting alone in taking the important decision, perhaps with only peer group pressure to contend with. Three independent opinions suggested that there was probably a general feeling that Black education was already inferior, even without the syllabus differentiation hence the reluctance to register for the SG option. Furthermore, the investigation indicated that there was no adequate provision for technical education for Blacks in either the RSA or Ciskei which would provide the alternative to a university career for a pupiL Amongst other things, a mild form of pupil screening and a well structured careers guidance programme are suggested in the concluding chapters
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