The ballads of Carl Loewe : examined within their cultural, human and aesthetic context
- Authors: Mierowska, Jean Elaine Nora
- Date: 1989
- Subjects: Loewe, Carl, 1796-1869. Songs. Selections Loewe, Carl, 1796-1869. Songs
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2649 , http://hdl.handle.net/10962/d1002314
- Description: This thesis has been written in order to provide, especially for the non-German-reading musician, a fuller picture of Loewe and his ballads than has been available up to now. This picture is developed within the literary background history of the ballad poems, and the literary, mental, and musical climate at the beginning of the Romantic era; further, Loewe's life, as revealed in his many letters, his diaries, and his autobiography, provides the human context from which the ballads emerge as a logical extension of his personality. These earlier parts of the thesis have considerable bearing on the appreciation of Loewe's timely position in musical history, treating as they do with the popularity of the ballad poems, the rapid expansion of the means of musical/emotional expression, and the complete acceptance of that most romantic and versatile of soloinstruments, the piano. Loewe's temperamental affinity with the poetry of the ballads is shown to have affected his choice of subject, and in many cases the ultimate quality of the music is obviously dependent upon the strength or otherwise of his attraction. After observations on Loewe's vocal and piano writing, the thesis treats the ballads primarily with regard to their feeling and emotional content, and investigates the musical means by which this is conveyed. Categories are suggested, and ballads of similar dramatic, pictorial, or emotional type are discussed and compared. Certain formal characteristics are examined, in particular Loewe's use of highly organised motivic work in certain ballads, which foreshadows its later use by Liszt, Wagner and others. Over one hundred of Loewe's 120 ballads are dealt with, some in extensive detail~ and copious musical examples are given. The few comparatively well-known ballads receive due attention, but it was regarded as important to bring to light some of the more neglected or unknown ballads, many of which possess great beauty and originality, amply repaying study and, still more, performance. As a corollary, the approach of the performer is considered, and the Conclusion argues for an informed :esthetic appreciation of Loewe's ballads and their place in teday's vocal repertoire.
- Full Text:
- Date Issued: 1989
- Authors: Mierowska, Jean Elaine Nora
- Date: 1989
- Subjects: Loewe, Carl, 1796-1869. Songs. Selections Loewe, Carl, 1796-1869. Songs
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2649 , http://hdl.handle.net/10962/d1002314
- Description: This thesis has been written in order to provide, especially for the non-German-reading musician, a fuller picture of Loewe and his ballads than has been available up to now. This picture is developed within the literary background history of the ballad poems, and the literary, mental, and musical climate at the beginning of the Romantic era; further, Loewe's life, as revealed in his many letters, his diaries, and his autobiography, provides the human context from which the ballads emerge as a logical extension of his personality. These earlier parts of the thesis have considerable bearing on the appreciation of Loewe's timely position in musical history, treating as they do with the popularity of the ballad poems, the rapid expansion of the means of musical/emotional expression, and the complete acceptance of that most romantic and versatile of soloinstruments, the piano. Loewe's temperamental affinity with the poetry of the ballads is shown to have affected his choice of subject, and in many cases the ultimate quality of the music is obviously dependent upon the strength or otherwise of his attraction. After observations on Loewe's vocal and piano writing, the thesis treats the ballads primarily with regard to their feeling and emotional content, and investigates the musical means by which this is conveyed. Categories are suggested, and ballads of similar dramatic, pictorial, or emotional type are discussed and compared. Certain formal characteristics are examined, in particular Loewe's use of highly organised motivic work in certain ballads, which foreshadows its later use by Liszt, Wagner and others. Over one hundred of Loewe's 120 ballads are dealt with, some in extensive detail~ and copious musical examples are given. The few comparatively well-known ballads receive due attention, but it was regarded as important to bring to light some of the more neglected or unknown ballads, many of which possess great beauty and originality, amply repaying study and, still more, performance. As a corollary, the approach of the performer is considered, and the Conclusion argues for an informed :esthetic appreciation of Loewe's ballads and their place in teday's vocal repertoire.
- Full Text:
- Date Issued: 1989
The Benthic invertebrate community of a Southern Cape estuary : structure and possible food sources
- Authors: Whitfield, A K
- Date: 1989
- Language: English
- Type: text , Article
- Identifier: vital:7154 , http://hdl.handle.net/10962/d1011871
- Description: Cluster analysis of invertebrate communities in the Swartvlei estuary revealed that vegetated (Zostera capensis) sites were distinct from unvegetated ones. `Indicator species' for the eelgrass group included Melita zeylinaca, Loripes clausus, Natica tecta and Palaemon pacificus, whereas those for the bare sand community were Urothoe pulchella, Callianassa kraussi, Iphinoe truncata and Pontogeloides latipes. Infaunal bivalves comprised >60 % of the invertebrate biomass at Zostera sites but <5 % at bare sand sites. Conversely the infaunal anomuran C. kraussi dominated the sandy sites (>80 %) and was a minor component (<5 %) at eelgrass sites. The supratidal invertebrate community was dominated by Orchestia spp. which live and feed on wrack detritus. Litterbag experiments revealed that degradation of Zostera leaf wrack was rapid during the first thirty days after deposition but slow between 40 and 140 days. Laboratory experiments indicated that Orchestia consumption of wrack material could not account for the rapid weight loss recorded in the natural environment. Preliminary diet analyses of intertidal and infratidal zoobenthos revealed that most invertebrate species feed on detritus and associated microorganisms. Filamentous algae and diatoms dominated the gut contents of only three out of 18 macrobenthic species, and living Zostera was not an important food item for any invertebrate examined.
- Full Text: false
- Date Issued: 1989
- Authors: Whitfield, A K
- Date: 1989
- Language: English
- Type: text , Article
- Identifier: vital:7154 , http://hdl.handle.net/10962/d1011871
- Description: Cluster analysis of invertebrate communities in the Swartvlei estuary revealed that vegetated (Zostera capensis) sites were distinct from unvegetated ones. `Indicator species' for the eelgrass group included Melita zeylinaca, Loripes clausus, Natica tecta and Palaemon pacificus, whereas those for the bare sand community were Urothoe pulchella, Callianassa kraussi, Iphinoe truncata and Pontogeloides latipes. Infaunal bivalves comprised >60 % of the invertebrate biomass at Zostera sites but <5 % at bare sand sites. Conversely the infaunal anomuran C. kraussi dominated the sandy sites (>80 %) and was a minor component (<5 %) at eelgrass sites. The supratidal invertebrate community was dominated by Orchestia spp. which live and feed on wrack detritus. Litterbag experiments revealed that degradation of Zostera leaf wrack was rapid during the first thirty days after deposition but slow between 40 and 140 days. Laboratory experiments indicated that Orchestia consumption of wrack material could not account for the rapid weight loss recorded in the natural environment. Preliminary diet analyses of intertidal and infratidal zoobenthos revealed that most invertebrate species feed on detritus and associated microorganisms. Filamentous algae and diatoms dominated the gut contents of only three out of 18 macrobenthic species, and living Zostera was not an important food item for any invertebrate examined.
- Full Text: false
- Date Issued: 1989
The co-operative model as an instrument in the community economic development process
- Authors: Barratt, Neal
- Date: 1989
- Subjects: Fraternal organizations -- South Africa Producer cooperatives Wages -- South Africa Working class -- South Africa Cape Town (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2046 , vital:20250 , ISBN 0868101796
- Description: There has recently been considerable interest in the viability of co-operative enterprise as a means to both social and economic empowerment. The objectives of this broadly-based research have been to address a number of basic aspects of co-operative endeavour. The first of these concerns the realisation that 'cooperative' has become something of a generic term, often incorrectly applied, for any venture which involves a group of persons working towards a common goal, and which has consequently achieved a certain popularity as a political catchword in some circles. The purpose here has been to outline the social, economic and basic legal conditions circumscribed by an accurate definition of this term. The second objective has been to state clearly the different types of co-operative which exist. All subscribe to a similar set of philosophical principles, yet have different purposes. The major categories of co-operative enterprise are called Producer Co-operatives, Service Co-operatives, Worker Cooperatives, Housing Co-operatives, Benefit Societies and Consumer Co-operatives. This list is not exhaustive, and the various other sub-divisions of co-operative endeavour fall under the aegis of one or other of these categories. The third objective has been to acknowledge the different emphases which can be exploited by co-operative projects. These fall into two broad categories; namely, as instruments of economic or of social change. Having investigated the nature of co-operative endeavour, it has been important to accept the fact that despite much well- meaning activity in a sphere which has been lauded by some as a universal panacea to the social and economic ills which beset South Africa in these present times, the success rate of co-operatives has been far less than perfect. The reasons for this situation rest on a number of factors; the most important of which have to do with the degree of cooperative community ethos, access to capital for startup costs, the degree and nature of skills available, and the degree of training and experience in marketing and market analysis, costing, bookkeeping, general literacy and management skills. The research which has been conducted in this field has resulted in the production of a companion instruction manual, in workshop format, which will permit training and exercises in the above areas, and which is available from the Development Studies Unit. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1989
- Authors: Barratt, Neal
- Date: 1989
- Subjects: Fraternal organizations -- South Africa Producer cooperatives Wages -- South Africa Working class -- South Africa Cape Town (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/2046 , vital:20250 , ISBN 0868101796
- Description: There has recently been considerable interest in the viability of co-operative enterprise as a means to both social and economic empowerment. The objectives of this broadly-based research have been to address a number of basic aspects of co-operative endeavour. The first of these concerns the realisation that 'cooperative' has become something of a generic term, often incorrectly applied, for any venture which involves a group of persons working towards a common goal, and which has consequently achieved a certain popularity as a political catchword in some circles. The purpose here has been to outline the social, economic and basic legal conditions circumscribed by an accurate definition of this term. The second objective has been to state clearly the different types of co-operative which exist. All subscribe to a similar set of philosophical principles, yet have different purposes. The major categories of co-operative enterprise are called Producer Co-operatives, Service Co-operatives, Worker Cooperatives, Housing Co-operatives, Benefit Societies and Consumer Co-operatives. This list is not exhaustive, and the various other sub-divisions of co-operative endeavour fall under the aegis of one or other of these categories. The third objective has been to acknowledge the different emphases which can be exploited by co-operative projects. These fall into two broad categories; namely, as instruments of economic or of social change. Having investigated the nature of co-operative endeavour, it has been important to accept the fact that despite much well- meaning activity in a sphere which has been lauded by some as a universal panacea to the social and economic ills which beset South Africa in these present times, the success rate of co-operatives has been far less than perfect. The reasons for this situation rest on a number of factors; the most important of which have to do with the degree of cooperative community ethos, access to capital for startup costs, the degree and nature of skills available, and the degree of training and experience in marketing and market analysis, costing, bookkeeping, general literacy and management skills. The research which has been conducted in this field has resulted in the production of a companion instruction manual, in workshop format, which will permit training and exercises in the above areas, and which is available from the Development Studies Unit. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1989
The design and implementation of a fourth generation programming language
- Authors: Iverson, Carn Martin
- Date: 1989 , 2013-03-04
- Subjects: Programming languages (Electronic computers) , Fourth generation computers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4584 , http://hdl.handle.net/10962/d1004652 , Programming languages (Electronic computers) , Fourth generation computers
- Description: IV is a very high level language designed for use in a real time production control environment. While most fourth generation languages are intended for use by end users, IV is more suitable for skilled professional programmers. One of the major design objectives of IV is a dramatic improvement in programmer efficiency during application program development. Non-procedural constructs provided by the language and the use of a number of interactive development tools provide an environment for achieving this goal. This report presents a language proposal for IV, and addresses related design and implementation issues.
- Full Text:
- Date Issued: 1989
- Authors: Iverson, Carn Martin
- Date: 1989 , 2013-03-04
- Subjects: Programming languages (Electronic computers) , Fourth generation computers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4584 , http://hdl.handle.net/10962/d1004652 , Programming languages (Electronic computers) , Fourth generation computers
- Description: IV is a very high level language designed for use in a real time production control environment. While most fourth generation languages are intended for use by end users, IV is more suitable for skilled professional programmers. One of the major design objectives of IV is a dramatic improvement in programmer efficiency during application program development. Non-procedural constructs provided by the language and the use of a number of interactive development tools provide an environment for achieving this goal. This report presents a language proposal for IV, and addresses related design and implementation issues.
- Full Text:
- Date Issued: 1989
The drift from the farms to town : a case study of migration from white-owned farms in the Eastern Cape to Grahamstown
- Authors: Manona, Cecil Wele
- Date: 1989
- Subjects: Rural-urban migration -- South Africa -- Eastern Cape Agricultural laborers -- South Africa -- Eastern Cape -- Economic conditions Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions Government, Resistance to -- South Africa -- Eastern Cape Grahamstown (South Africa) -- History
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2088 , http://hdl.handle.net/10962/d1002651
- Description: The study deals with the migration of large numbers of black workers from white-owned farms in the Albany and Bathurst districts to Grahamstown. In South Africa the migration of farm residents to the towns has not yet received much attention from researchers. Instead, most migrant studies have concentrated on the migration from the 'homeland' areas and for this reason little is known about the people who have been associated with the farms in some cases for five generations. From the 1940s these farms were rapidly losing labour largely on account of the introduction of mechanization and land rationalization. At that time many farm dwellers were migrating to Grahamstown and, to same extent, Port Elizabeth. The past few decades witnessed a massive further migration from these farms and this, together with natural increase, contributed to the 53,9% increase in Graharnstown's black population in the 1970-80 decade. The study has these aims: 1. To consider the factors that have promoted the move away from the farms , especially as from the end of the Second World War. 2. To account for the overwhelming attraction of Grahamstown as a destination among those who must, or decide to, migrate. 3. To assess the mode of adaptation of those who settle in Grahamstown pennanently. Those who have been in town for several decades provide a background for the central focus of the study, the new irrmigrants who came to town a decade ago or more recently. The latter include people who migrated to town from August 1984, i.e. during a period of extra-ordinary political developments and serious unrest in Grahamstown. The study places an emphasis on the way the imnigrants themselves perceive the process. The aims of the study which have been mentioned above revolve around the impoverishment of rural inhabitants who must now work for wages with hardly any measure of autonomy over the major aspects of their lives while those who go and live in town must contend with a competitive urban economy in which economic opportunities are scarce. This is the central problem of this thesis.
- Full Text:
- Date Issued: 1989
- Authors: Manona, Cecil Wele
- Date: 1989
- Subjects: Rural-urban migration -- South Africa -- Eastern Cape Agricultural laborers -- South Africa -- Eastern Cape -- Economic conditions Agricultural laborers -- South Africa -- Eastern Cape -- Social conditions Government, Resistance to -- South Africa -- Eastern Cape Grahamstown (South Africa) -- History
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2088 , http://hdl.handle.net/10962/d1002651
- Description: The study deals with the migration of large numbers of black workers from white-owned farms in the Albany and Bathurst districts to Grahamstown. In South Africa the migration of farm residents to the towns has not yet received much attention from researchers. Instead, most migrant studies have concentrated on the migration from the 'homeland' areas and for this reason little is known about the people who have been associated with the farms in some cases for five generations. From the 1940s these farms were rapidly losing labour largely on account of the introduction of mechanization and land rationalization. At that time many farm dwellers were migrating to Grahamstown and, to same extent, Port Elizabeth. The past few decades witnessed a massive further migration from these farms and this, together with natural increase, contributed to the 53,9% increase in Graharnstown's black population in the 1970-80 decade. The study has these aims: 1. To consider the factors that have promoted the move away from the farms , especially as from the end of the Second World War. 2. To account for the overwhelming attraction of Grahamstown as a destination among those who must, or decide to, migrate. 3. To assess the mode of adaptation of those who settle in Grahamstown pennanently. Those who have been in town for several decades provide a background for the central focus of the study, the new irrmigrants who came to town a decade ago or more recently. The latter include people who migrated to town from August 1984, i.e. during a period of extra-ordinary political developments and serious unrest in Grahamstown. The study places an emphasis on the way the imnigrants themselves perceive the process. The aims of the study which have been mentioned above revolve around the impoverishment of rural inhabitants who must now work for wages with hardly any measure of autonomy over the major aspects of their lives while those who go and live in town must contend with a competitive urban economy in which economic opportunities are scarce. This is the central problem of this thesis.
- Full Text:
- Date Issued: 1989
The effects of a South African Black youth jive on selected biophysical physiological and psycho-social parameters
- Authors: Masipa, Mochaki Deborah
- Date: 1989
- Subjects: Movement, Psychology of , Dance, Black -- Physiological aspects , Dance -- Physiological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5158 , http://hdl.handle.net/10962/d1015682
- Description: This study investigated the effects of a South African Black youth jive on selected Biophysical, Physiological and Psycho-social parameters, using 31 Black youths, males and females (mean age 19.29 yrs) as subjects. All subjects participated in the pre- and post-programme testing protocols (acting as their own control) and in a 7-week jive programme. While the female subjects were significantly (p<0.05) heavier with a greater percentage body fat than their male counterparts, a two factor analysis of variance revealed no significant changes in body composition (p<0.05) of either sex group. However, significant improvements did occur in the cardio-respiratory . parameters of working and recovery heart rates, predicted V0₂ max, and the anaerobic capacity. Here, the males exhibited superior cardio-respiratory qualities and performed better in all motor fitness parameters except flexibility, where no significant sex difference occurred. Also, there were significant improvements in all motor fitness tests with the exception of power (as tested in the 18-Item Illinois test). No significant differences occurred between male and female psycho-social responses with no changes occurring after the 7- week programme. It can be concluded that involvement in the 7-week jive programme improved physiological parameters but failed to bring about alterations in the biophysical and psycho-social domains..
- Full Text:
- Date Issued: 1989
- Authors: Masipa, Mochaki Deborah
- Date: 1989
- Subjects: Movement, Psychology of , Dance, Black -- Physiological aspects , Dance -- Physiological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5158 , http://hdl.handle.net/10962/d1015682
- Description: This study investigated the effects of a South African Black youth jive on selected Biophysical, Physiological and Psycho-social parameters, using 31 Black youths, males and females (mean age 19.29 yrs) as subjects. All subjects participated in the pre- and post-programme testing protocols (acting as their own control) and in a 7-week jive programme. While the female subjects were significantly (p<0.05) heavier with a greater percentage body fat than their male counterparts, a two factor analysis of variance revealed no significant changes in body composition (p<0.05) of either sex group. However, significant improvements did occur in the cardio-respiratory . parameters of working and recovery heart rates, predicted V0₂ max, and the anaerobic capacity. Here, the males exhibited superior cardio-respiratory qualities and performed better in all motor fitness parameters except flexibility, where no significant sex difference occurred. Also, there were significant improvements in all motor fitness tests with the exception of power (as tested in the 18-Item Illinois test). No significant differences occurred between male and female psycho-social responses with no changes occurring after the 7- week programme. It can be concluded that involvement in the 7-week jive programme improved physiological parameters but failed to bring about alterations in the biophysical and psycho-social domains..
- Full Text:
- Date Issued: 1989
The effects of externally induced socio-economic and political changes in rural areas: the Keiskammahoek district 1948-1986: a pilot project
- de Wet, Christopher J, Leibbrandt, M V, Palmer, Robin C G, Mills, M E, Tantsi, V
- Authors: de Wet, Christopher J , Leibbrandt, M V , Palmer, Robin C G , Mills, M E , Tantsi, V
- Date: 1989
- Subjects: Land use -- South Africa -- Keiskammahoek Keiskammahoek (South Africa) -- Economic conditions Keiskammahoek (South Africa) -- Social conditions Ciskei (South Africa) -- Social conditions Ciskei (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/1848 , vital:20233 , ISBN 0868101893
- Description: This Working Paper contains the results of a pilot investigation undertaken in 1986/87 in selected areas of the Keiskammahoek District of Ciskei. The pilot study was undertaken in order to compile a comprehensive plan for a long-term study of the Keiskammahoek District as a whole. Such a study would be designed to analyse socio-economic and political changes which have taken place in the District, measured against the results of a major multidisciplinary research project (The Keiskammahoek Rural Survey) which was undertaken in the area between 1948 and 1950. The existence of the Keiskammahoek Rural Survey affords a unique opportunity for comparative social science research, particularly because it is well known that substantial changes have taken place in the District. However, the precise nature and scale of the changes were unknown; hence, the decision to conduct a pilot survey first. The results of the pilot survey, published here, have turned out to be extremely valuable in formulating proposals for a subsequent on-going research undertaking; and have fully justified the time and money devoted to the exploratory investigation which constituted the basis of the pilot project. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1989
- Authors: de Wet, Christopher J , Leibbrandt, M V , Palmer, Robin C G , Mills, M E , Tantsi, V
- Date: 1989
- Subjects: Land use -- South Africa -- Keiskammahoek Keiskammahoek (South Africa) -- Economic conditions Keiskammahoek (South Africa) -- Social conditions Ciskei (South Africa) -- Social conditions Ciskei (South Africa) -- Economic conditions
- Language: English
- Type: Book , Text
- Identifier: http://hdl.handle.net/10962/1848 , vital:20233 , ISBN 0868101893
- Description: This Working Paper contains the results of a pilot investigation undertaken in 1986/87 in selected areas of the Keiskammahoek District of Ciskei. The pilot study was undertaken in order to compile a comprehensive plan for a long-term study of the Keiskammahoek District as a whole. Such a study would be designed to analyse socio-economic and political changes which have taken place in the District, measured against the results of a major multidisciplinary research project (The Keiskammahoek Rural Survey) which was undertaken in the area between 1948 and 1950. The existence of the Keiskammahoek Rural Survey affords a unique opportunity for comparative social science research, particularly because it is well known that substantial changes have taken place in the District. However, the precise nature and scale of the changes were unknown; hence, the decision to conduct a pilot survey first. The results of the pilot survey, published here, have turned out to be extremely valuable in formulating proposals for a subsequent on-going research undertaking; and have fully justified the time and money devoted to the exploratory investigation which constituted the basis of the pilot project. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
- Full Text:
- Date Issued: 1989
The effects of high school accounting study on first year students' performance in financial accounting at selected South African universities
- Authors: Rowlands, Jeffrey Everard
- Date: 1989
- Subjects: Accounting -- Study and teaching (Higher) , Accounting -- Study and teaching (Secondary)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:873 , http://hdl.handle.net/10962/d1001605
- Description: This thesis examines the opinions of a sample of accounting students and a sample of accounting lecturers regarding the effect of prior study of accounting on performance in the first year university financial accounting course. A comparison is also made of actual performance in the first year course of two groups of students, those who have studied accounting at secondary school and those who have not. For the comparison of actual performance data were collected over a three year period (1985-1987). Two separate research designs were used to test for differences in performance. Both research designs indicated that students with secondary school accounting scored higher on early tests and examinations but that the two groups of students scored equally on the final examination. The survey of students' opinions included students from two universities. The major findings showed that students, regardless of whether or not they had studied accounting at secondary level, believed those who had to be advantaged in the first year financial accounting course. The majority of respondents indicated that high school accounting was, in their opinion, a desirable preparation for the university course. The survey of lecturers' opinions included lecturers from 15 South African universities. The findings of primary concern showed that lecturers believed students with prior exposure to accounting to be at an advantage in the first year financial accounting course.
- Full Text:
- Date Issued: 1989
- Authors: Rowlands, Jeffrey Everard
- Date: 1989
- Subjects: Accounting -- Study and teaching (Higher) , Accounting -- Study and teaching (Secondary)
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:873 , http://hdl.handle.net/10962/d1001605
- Description: This thesis examines the opinions of a sample of accounting students and a sample of accounting lecturers regarding the effect of prior study of accounting on performance in the first year university financial accounting course. A comparison is also made of actual performance in the first year course of two groups of students, those who have studied accounting at secondary school and those who have not. For the comparison of actual performance data were collected over a three year period (1985-1987). Two separate research designs were used to test for differences in performance. Both research designs indicated that students with secondary school accounting scored higher on early tests and examinations but that the two groups of students scored equally on the final examination. The survey of students' opinions included students from two universities. The major findings showed that students, regardless of whether or not they had studied accounting at secondary level, believed those who had to be advantaged in the first year financial accounting course. The majority of respondents indicated that high school accounting was, in their opinion, a desirable preparation for the university course. The survey of lecturers' opinions included lecturers from 15 South African universities. The findings of primary concern showed that lecturers believed students with prior exposure to accounting to be at an advantage in the first year financial accounting course.
- Full Text:
- Date Issued: 1989
The empty-nest stage of life : a comparative study of women and men facing transition
- Authors: Kaplan, Ernest
- Date: 1989
- Subjects: Empty nesters , Parent and child , Sex role -- Psychological aspect , Men -- Sexual behavior , Women -- Sexual behavior
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2899 , http://hdl.handle.net/10962/d1002063
- Description: This thesis encompasses a study of the empty-nest stage of life. For the purposes of this study, the above-mentioned stage was defined as that period in the family when the youngest child matriculates. Thirty-five empty-nest couples were interviewed during 1984, in the city of Port Elizabeth, South Africa. The mean age of the subjects was 49.5, and the standard deviation was 4.9. The couples were asked about their attitudes towards the empty-nest, using a structured questionnaire, the Family Attitude Survey (FAS). This survey consisted of nine-point attitude statements, which focused on theoretical issues pertinent to this stage, viz. children are on-time or off-time with regard to major life events, impact of children leaving home on the parents, degree of parental involvement with children, parent-child relationships, ageing, sexuality, menopause, work-career, and attitudes towards the past, future and death. The general purpose of the present study was to determine the extent to which the empty-nest stage of life constitutes a negative crisis period, or a positive period of stability and growth for the empty-nest parents. Overall, it was concluded that the empirical evidence depicting the empty- nest stage of life as a positive period of stability and growth rather than a negative crisis period, is persuasive for some of the empty-nest parents in the present study, in view of the empirical findings regarding certain of the above-mentioned theoretical issues examined in the present thesis. Notwithstanding this, it was deemed essential to qualify the above conclusion, given the fact that the same and other respondents experienced difficulty with the following issues, viz. children being off-time with regard to major life events, the departure of children from the home, overinvolvement with children, problematic relationships with them, perceptions of themselves as failures as parents, inability to accept their own ageing, problems with changing sexuality, diminishing enjoyment in their occupations, and lack of prospects for future career advancement, negative preoccupation with the past and future, anxiety about death, and an impoverished marital relationship. It was also demonstrated empirically that wives experience particular psychological problems at this time, viz., firstly, they are more adversely affected by their children's departure from the home than their husbands, secondly, they undergo a rehearsal for widowhood more frequently than them, and thirdly, a minority of them are unable to come to terms with the menopause. Finally, the finding that the majority of wives experienced relief with the onset of the menopause when viewed from the perspectives of general emotional impact, children, and the spousal relationship, conflicts with existing theories in this area. However, it is supported by and large by the majority of empirical studies.
- Full Text:
- Date Issued: 1989
- Authors: Kaplan, Ernest
- Date: 1989
- Subjects: Empty nesters , Parent and child , Sex role -- Psychological aspect , Men -- Sexual behavior , Women -- Sexual behavior
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2899 , http://hdl.handle.net/10962/d1002063
- Description: This thesis encompasses a study of the empty-nest stage of life. For the purposes of this study, the above-mentioned stage was defined as that period in the family when the youngest child matriculates. Thirty-five empty-nest couples were interviewed during 1984, in the city of Port Elizabeth, South Africa. The mean age of the subjects was 49.5, and the standard deviation was 4.9. The couples were asked about their attitudes towards the empty-nest, using a structured questionnaire, the Family Attitude Survey (FAS). This survey consisted of nine-point attitude statements, which focused on theoretical issues pertinent to this stage, viz. children are on-time or off-time with regard to major life events, impact of children leaving home on the parents, degree of parental involvement with children, parent-child relationships, ageing, sexuality, menopause, work-career, and attitudes towards the past, future and death. The general purpose of the present study was to determine the extent to which the empty-nest stage of life constitutes a negative crisis period, or a positive period of stability and growth for the empty-nest parents. Overall, it was concluded that the empirical evidence depicting the empty- nest stage of life as a positive period of stability and growth rather than a negative crisis period, is persuasive for some of the empty-nest parents in the present study, in view of the empirical findings regarding certain of the above-mentioned theoretical issues examined in the present thesis. Notwithstanding this, it was deemed essential to qualify the above conclusion, given the fact that the same and other respondents experienced difficulty with the following issues, viz. children being off-time with regard to major life events, the departure of children from the home, overinvolvement with children, problematic relationships with them, perceptions of themselves as failures as parents, inability to accept their own ageing, problems with changing sexuality, diminishing enjoyment in their occupations, and lack of prospects for future career advancement, negative preoccupation with the past and future, anxiety about death, and an impoverished marital relationship. It was also demonstrated empirically that wives experience particular psychological problems at this time, viz., firstly, they are more adversely affected by their children's departure from the home than their husbands, secondly, they undergo a rehearsal for widowhood more frequently than them, and thirdly, a minority of them are unable to come to terms with the menopause. Finally, the finding that the majority of wives experienced relief with the onset of the menopause when viewed from the perspectives of general emotional impact, children, and the spousal relationship, conflicts with existing theories in this area. However, it is supported by and large by the majority of empirical studies.
- Full Text:
- Date Issued: 1989
The exploration and evaluation of groundwater units in the Van Rynevelds Pass Dam Basin, north of Graaff-Reinet, Cape Province
- Authors: Woodford, A C
- Date: 1989 , 2013-08-30
- Subjects: Aquifers -- South Africa -- Graaff-Reinet , Hydrogeology -- South Africa , Groundwater -- South Africa -- Graaff-Reinet
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4880 , http://hdl.handle.net/10962/d1013275
- Description: This thesis deals with a groundwater investigation conducted in the Van Rynevelds Pass Dam basin, north of Graaff-Reinet, in the Cape Province. The objective of the study was to assess the groundwater potential of the basin in terms of its development and exploitation as a municipal supply. In order to achieve this objective, fieldwork was carried out involving a hydrocensus, geological/geophysical mapping, drilling, aquifer testing and hydrochemical sampling. The fieldwork was conducted during the period January 1983 to February 1984. The investigation revealed that the most significant ground water occurrence in the study area is an alluvial/weathered bedrock aquifer (Graaff-Reinet aquifer ) . The volume of ground water stored in the Graaff-Reinet aquifer is in the order of 27 x 10⁶ m³, while its exploitation potential is conservatively estimated at 9 300 m³/day. However, the quality of this water is poor and should be blended with dam water or better quality groundwater. Two minor fractured aquifer units were also identified.
- Full Text:
- Date Issued: 1989
- Authors: Woodford, A C
- Date: 1989 , 2013-08-30
- Subjects: Aquifers -- South Africa -- Graaff-Reinet , Hydrogeology -- South Africa , Groundwater -- South Africa -- Graaff-Reinet
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4880 , http://hdl.handle.net/10962/d1013275
- Description: This thesis deals with a groundwater investigation conducted in the Van Rynevelds Pass Dam basin, north of Graaff-Reinet, in the Cape Province. The objective of the study was to assess the groundwater potential of the basin in terms of its development and exploitation as a municipal supply. In order to achieve this objective, fieldwork was carried out involving a hydrocensus, geological/geophysical mapping, drilling, aquifer testing and hydrochemical sampling. The fieldwork was conducted during the period January 1983 to February 1984. The investigation revealed that the most significant ground water occurrence in the study area is an alluvial/weathered bedrock aquifer (Graaff-Reinet aquifer ) . The volume of ground water stored in the Graaff-Reinet aquifer is in the order of 27 x 10⁶ m³, while its exploitation potential is conservatively estimated at 9 300 m³/day. However, the quality of this water is poor and should be blended with dam water or better quality groundwater. Two minor fractured aquifer units were also identified.
- Full Text:
- Date Issued: 1989
The history of Pirie Mission and amaHleke chiefdom
- Authors: Vazi, Clifford Mlandeli
- Date: 1989
- Subjects: Presbyterian Church -- Missions -- South Africa , Pirie Mission , Ross, John , Xhosa (African people) -- History
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2528 , http://hdl.handle.net/10962/d1001857
- Description: This thesis deals with the history of the amaHleke people and Pirie Mission, which have become so closely associated that they cannot be separated. It covers the period from the time of Chief Hleke to 1967, the year in which the amaHleke cheiftainship was resuscitated. The first chapter relates the origin of the amaHleke, from the time of Hleke himself (17th century) to Jwarha (about 1820). It explains the relationship between the different branches of the Hleke royal line, and it covers the Hleke settlement at the Mgqakhwebe river. The second chapter deals with the establishment of Pirie Mission by the Presbyterian missionaries John and Bryce Ross. It discusses the various aspects of the mission operation, and explains why and how the amaHleke opposed it. But the situation changed as a result of the 1850-3 Frontier War. Whereas the other Xhosa were expelled from their lands, the Hleke connection with Pirie Mission enabled them to stay on. The Hleke were therefore united with the mission, whether they liked it or not. The remainder of the chapter describes the educational and cultural changes which the mission imposed on them. The third chapter covers economic change at Pirie. Like other mission stations, it was converted from communal to individual land tenure. This was opposed by Chief Jwarha as a blow to his authority, but it did not result in the growth of a peasant class. The chapter concludes with the implementation of betterment in 1963. The fourth chapter explains what happened to the mission after the death of Bryce Ross. The Ross missionaries had frustrated black aspirations in teh church. This was especially frustrating to Burnet and Ntsikana Gaba, the great-grandsons of the prophet Ntsikana. Burnet broke away under the banner of the "Wee Free" branch of the Church of Scotland. This church also could not accommodate Burnet's aspirations. The remainder of the chapter deals with educational developments, with an emphasis on the introduction of Bantu Education. The last chapter deals with the political history of Pirie after the death of Chief Jwarha. The Cape government tried to replace chieftainship by a headman and a Village Management Board. But the Board did not function satisfactorily, and it was scrapped in 1921. Pirie continued to be administered by headmen. Applications for the revival of chieftainship were turned down, partly because there was no agreement on Jwarha's heir. However, this was finally resolved in 1967 with the appointment of Chief Pani Busoshe.
- Full Text:
- Date Issued: 1989
- Authors: Vazi, Clifford Mlandeli
- Date: 1989
- Subjects: Presbyterian Church -- Missions -- South Africa , Pirie Mission , Ross, John , Xhosa (African people) -- History
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2528 , http://hdl.handle.net/10962/d1001857
- Description: This thesis deals with the history of the amaHleke people and Pirie Mission, which have become so closely associated that they cannot be separated. It covers the period from the time of Chief Hleke to 1967, the year in which the amaHleke cheiftainship was resuscitated. The first chapter relates the origin of the amaHleke, from the time of Hleke himself (17th century) to Jwarha (about 1820). It explains the relationship between the different branches of the Hleke royal line, and it covers the Hleke settlement at the Mgqakhwebe river. The second chapter deals with the establishment of Pirie Mission by the Presbyterian missionaries John and Bryce Ross. It discusses the various aspects of the mission operation, and explains why and how the amaHleke opposed it. But the situation changed as a result of the 1850-3 Frontier War. Whereas the other Xhosa were expelled from their lands, the Hleke connection with Pirie Mission enabled them to stay on. The Hleke were therefore united with the mission, whether they liked it or not. The remainder of the chapter describes the educational and cultural changes which the mission imposed on them. The third chapter covers economic change at Pirie. Like other mission stations, it was converted from communal to individual land tenure. This was opposed by Chief Jwarha as a blow to his authority, but it did not result in the growth of a peasant class. The chapter concludes with the implementation of betterment in 1963. The fourth chapter explains what happened to the mission after the death of Bryce Ross. The Ross missionaries had frustrated black aspirations in teh church. This was especially frustrating to Burnet and Ntsikana Gaba, the great-grandsons of the prophet Ntsikana. Burnet broke away under the banner of the "Wee Free" branch of the Church of Scotland. This church also could not accommodate Burnet's aspirations. The remainder of the chapter deals with educational developments, with an emphasis on the introduction of Bantu Education. The last chapter deals with the political history of Pirie after the death of Chief Jwarha. The Cape government tried to replace chieftainship by a headman and a Village Management Board. But the Board did not function satisfactorily, and it was scrapped in 1921. Pirie continued to be administered by headmen. Applications for the revival of chieftainship were turned down, partly because there was no agreement on Jwarha's heir. However, this was finally resolved in 1967 with the appointment of Chief Pani Busoshe.
- Full Text:
- Date Issued: 1989
The human skin-blanching assay as an indicator of topical corticosteroid bioavailability and potency: an update
- Smith, Eric W, Meyer, Eric, Haigh, John M, Maibach, Harold I
- Authors: Smith, Eric W , Meyer, Eric , Haigh, John M , Maibach, Harold I
- Date: 1989
- Language: English
- Type: Book chapter
- Identifier: vital:6440 , http://hdl.handle.net/10962/d1006627 , ISBN 0824780361
- Description: The human skin-blanching (or vasoconstrictor) assay has evolved from initial observations that corticosteroids induce a pallor or whitening of the skin to which they are applied. McKenzie and Stoughton (1962) are generally recognized as having developed the first scientific bioassay for comparing corticosteroid potency. The extensive use of this bioassay to compare drug release from topical delivery systems has demonstrated numerous instances in which the topical bioavailability may vary greatly, dependent on the character of the delivery vehicle. It has become evident that simply incorporating an intrinsically potent drug into a formulation does not necessarily produce a clinically efficacious product.
- Full Text:
- Date Issued: 1989
- Authors: Smith, Eric W , Meyer, Eric , Haigh, John M , Maibach, Harold I
- Date: 1989
- Language: English
- Type: Book chapter
- Identifier: vital:6440 , http://hdl.handle.net/10962/d1006627 , ISBN 0824780361
- Description: The human skin-blanching (or vasoconstrictor) assay has evolved from initial observations that corticosteroids induce a pallor or whitening of the skin to which they are applied. McKenzie and Stoughton (1962) are generally recognized as having developed the first scientific bioassay for comparing corticosteroid potency. The extensive use of this bioassay to compare drug release from topical delivery systems has demonstrated numerous instances in which the topical bioavailability may vary greatly, dependent on the character of the delivery vehicle. It has become evident that simply incorporating an intrinsically potent drug into a formulation does not necessarily produce a clinically efficacious product.
- Full Text:
- Date Issued: 1989
The IMSSA Review Number 8
- INDEPENDENT MEDIATION SERVICE OF SOUTH AFRICA (IMSSA)
- Authors: INDEPENDENT MEDIATION SERVICE OF SOUTH AFRICA (IMSSA)
- Date: 1989
- Subjects: IMSSA
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/176085 , vital:42658
- Description: The first six months of 1989 has proved to be as busy as predicted, and the demand for mediation and arbitration services has increased steadily during this period. Year on year, whereas there were some 120 mediations and 75 arbitrations during the first six months of 1988, there were 195 mediations and 117 arbitrations during the first six months of 1989. This increase in demand may be attributed to a number of factors. In the first place, with the ever increasing unionisation of workers in South Africa a wider range of parties are resorting to third party intervention to resolve disputes. Secondly, labour and management who have had experience of mediation and arbitration, have continued to use third party neutrals to assist them in the process of dispute resolution. And thirdly, given the current political climate and the attitude of the major trade union federations to the recent amendments to the Labour Relations Act, it is apparent that parties are turning with greater frequency to independent third party neutrals to assist them resolve conflict. There are, for example, an increasing number of recognition agreements which require that conflicts of right be adjudicated through private arbitration under the auspices of IMSSA. Some German multinationals have, in accordance with the IG Metaal Code of Conduct for German investors in South Africa, agreed to refer disputes of right to private arbitration. IMSSA has for some time now been cited in the disputes procedures of many recognition agreements as the source of mediators.
- Full Text:
- Date Issued: 1989
- Authors: INDEPENDENT MEDIATION SERVICE OF SOUTH AFRICA (IMSSA)
- Date: 1989
- Subjects: IMSSA
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10962/176085 , vital:42658
- Description: The first six months of 1989 has proved to be as busy as predicted, and the demand for mediation and arbitration services has increased steadily during this period. Year on year, whereas there were some 120 mediations and 75 arbitrations during the first six months of 1988, there were 195 mediations and 117 arbitrations during the first six months of 1989. This increase in demand may be attributed to a number of factors. In the first place, with the ever increasing unionisation of workers in South Africa a wider range of parties are resorting to third party intervention to resolve disputes. Secondly, labour and management who have had experience of mediation and arbitration, have continued to use third party neutrals to assist them in the process of dispute resolution. And thirdly, given the current political climate and the attitude of the major trade union federations to the recent amendments to the Labour Relations Act, it is apparent that parties are turning with greater frequency to independent third party neutrals to assist them resolve conflict. There are, for example, an increasing number of recognition agreements which require that conflicts of right be adjudicated through private arbitration under the auspices of IMSSA. Some German multinationals have, in accordance with the IG Metaal Code of Conduct for German investors in South Africa, agreed to refer disputes of right to private arbitration. IMSSA has for some time now been cited in the disputes procedures of many recognition agreements as the source of mediators.
- Full Text:
- Date Issued: 1989
The initial years (ca. 1528-1565) of Claude le Jeune : Huguent and musical humanist
- Potgieter, Johann Hendrik Loedolff Smuts
- Authors: Potgieter, Johann Hendrik Loedolff Smuts
- Date: 1989
- Subjects: Le Jeune, Claude, d. 1600 Music -- France -- 16th century -- History and criticism
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2673 , http://hdl.handle.net/10962/d1007392
- Description: Claude Le Jeune (born at Valenciennes , ca. 1528; died at Paris, 1600) was a towering figure in French Renaissance music. In spite of this, few biographical details have survived the turmoils of his time , which was marked primarily by the Wars of Religion, the last years of the reign of the Valois, and the struggle of Henry IV for the crown of France. In order, therefore, to attain a more complete picture of Le Jeune's life and work, the general historical and spiritual background, circumstantial evidence, is considered more implicating much intensely than usual. The two dominating beacons in Le Jeune's life are his allegiance to the Reformed Faith , involving close connections to leading Huguenot figures, and his inclination towards Humanism, confirmed by his association, from 1570 onwards, with the Academie de Poesie et de Musique of Jean-Antoine De Baïf. The present study is concerned with the initial years of Claude Le Jeune, covering the thirty- seven years of his life from 1528 (the assumed year of birth) intil 1565. In terms of publications, this period includes his "youthful" works : four early chansons from 1552, the Dix Pseaumes with a dialogue for seven voices , Mais qui es-tu,of 1564, and a single motet à 3, Nigra sum sed formosa, published in 1565. The background of his northern homeland is screened with particular attention to the involvement of the members of the Le Jeune family in the religious affairs of the time. Also the general cultural and musical milieu of the Netherlands is investigated within this and Le Jeune's first published works are considered biographical framework. These works still bear the stodginess and gaucheness of an apprentice. The probability of a sojourn in Italy is explored with positive findings. This visit most likely brought Le Jeune within the circle of the ageing Willaert at Venice, Major focus is placed upon the Dix Pseaumes, the first comprehensive collection to appear entirely under Le Jeunes ' s own name and dominating the initial period of his creative life. Detailed analyses reveal the hand of a now asserted composer. well-versed in technical matters and in possession of a fine perception for both the tenets of Calvinism and the aspirations of musical Humanism . As far as the latter is concerned. pertinent attention is given to its roots in the rhetorical and philosophical traditions. and how Le Jeune accommodated issues which sprouted from these and occupied the theorists of his time. Musical text expression holds. since the Dix Pseaumes. a central place in Le Jeune's works in which he maintains a fresh and subtle approach steering clear of the dogmatism of some contemporary theorists. Using various musical devices (modes, chiavette, melody, rhythm, harmony, texture, and even structure) to serve text expression. Le Jeune' s parlance gradually develops a currency in its own right. often expressing the meaning or implication of a text more comprehensively than can be attained by means of a linguistic medium. Appropriate to this particular trait of development in language. recognition is given Le Jeune's musical language. Included into the discussion are concordances of works by other composers where these exist as well as references to the relevant musical topography. A concluding summary of the moulding forces in the initial years of Claude Le Jeune's life as well as the gradual formulation of his distinct musical language concludes this study which can be regarded as an introduction to a more comprehensive programme of research on the life, times and works of Claude Le Jeune, Huguenot and Musical Humanist. A general bibliography is included while the folling appendices are included. 1 . A Bibliography of the works of Claude Le Jeune (all printed editions from 1552-1775). complete with descriptions . text incipits. sources. and class nubers; 2 . some relevant documents; 3. the literary texts of the works discussed; and 4. the "youthful" works. all of these (except the chanson spirituelle. Mais qui es- tu,as yet not republished . Various portraits. maps and other relevant illustrations are intended to enhance the presentation.
- Full Text:
- Date Issued: 1989
- Authors: Potgieter, Johann Hendrik Loedolff Smuts
- Date: 1989
- Subjects: Le Jeune, Claude, d. 1600 Music -- France -- 16th century -- History and criticism
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2673 , http://hdl.handle.net/10962/d1007392
- Description: Claude Le Jeune (born at Valenciennes , ca. 1528; died at Paris, 1600) was a towering figure in French Renaissance music. In spite of this, few biographical details have survived the turmoils of his time , which was marked primarily by the Wars of Religion, the last years of the reign of the Valois, and the struggle of Henry IV for the crown of France. In order, therefore, to attain a more complete picture of Le Jeune's life and work, the general historical and spiritual background, circumstantial evidence, is considered more implicating much intensely than usual. The two dominating beacons in Le Jeune's life are his allegiance to the Reformed Faith , involving close connections to leading Huguenot figures, and his inclination towards Humanism, confirmed by his association, from 1570 onwards, with the Academie de Poesie et de Musique of Jean-Antoine De Baïf. The present study is concerned with the initial years of Claude Le Jeune, covering the thirty- seven years of his life from 1528 (the assumed year of birth) intil 1565. In terms of publications, this period includes his "youthful" works : four early chansons from 1552, the Dix Pseaumes with a dialogue for seven voices , Mais qui es-tu,of 1564, and a single motet à 3, Nigra sum sed formosa, published in 1565. The background of his northern homeland is screened with particular attention to the involvement of the members of the Le Jeune family in the religious affairs of the time. Also the general cultural and musical milieu of the Netherlands is investigated within this and Le Jeune's first published works are considered biographical framework. These works still bear the stodginess and gaucheness of an apprentice. The probability of a sojourn in Italy is explored with positive findings. This visit most likely brought Le Jeune within the circle of the ageing Willaert at Venice, Major focus is placed upon the Dix Pseaumes, the first comprehensive collection to appear entirely under Le Jeunes ' s own name and dominating the initial period of his creative life. Detailed analyses reveal the hand of a now asserted composer. well-versed in technical matters and in possession of a fine perception for both the tenets of Calvinism and the aspirations of musical Humanism . As far as the latter is concerned. pertinent attention is given to its roots in the rhetorical and philosophical traditions. and how Le Jeune accommodated issues which sprouted from these and occupied the theorists of his time. Musical text expression holds. since the Dix Pseaumes. a central place in Le Jeune's works in which he maintains a fresh and subtle approach steering clear of the dogmatism of some contemporary theorists. Using various musical devices (modes, chiavette, melody, rhythm, harmony, texture, and even structure) to serve text expression. Le Jeune' s parlance gradually develops a currency in its own right. often expressing the meaning or implication of a text more comprehensively than can be attained by means of a linguistic medium. Appropriate to this particular trait of development in language. recognition is given Le Jeune's musical language. Included into the discussion are concordances of works by other composers where these exist as well as references to the relevant musical topography. A concluding summary of the moulding forces in the initial years of Claude Le Jeune's life as well as the gradual formulation of his distinct musical language concludes this study which can be regarded as an introduction to a more comprehensive programme of research on the life, times and works of Claude Le Jeune, Huguenot and Musical Humanist. A general bibliography is included while the folling appendices are included. 1 . A Bibliography of the works of Claude Le Jeune (all printed editions from 1552-1775). complete with descriptions . text incipits. sources. and class nubers; 2 . some relevant documents; 3. the literary texts of the works discussed; and 4. the "youthful" works. all of these (except the chanson spirituelle. Mais qui es- tu,as yet not republished . Various portraits. maps and other relevant illustrations are intended to enhance the presentation.
- Full Text:
- Date Issued: 1989
The karyology and taxonomy of the southern African yellowfish (Pisces : cyprinidae)
- Authors: Oellermann, Lawrence Keith
- Date: 1989
- Subjects: Barbus -- South Africa Cyprinidae -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5192 , http://hdl.handle.net/10962/d1001968
- Description: The southern African yellowfish (Barbus aeneus, B. capensls, B. kimberleyensis, B. natalensis and B. polylepis) are very similar, which limits the utility of traditional taxonomic methods. For this reason yellowfish similarities were explored using multivariate analysis and karyology. Meristic, morphometric and Truss (body shape) data were examined using multiple discriminant, principal component and cluster analyses. The morphological study disclosed that although the species were very similar two distinct groups occurred; B. aeneus-B. kimberleyensis and B. capensis-B. polylepis-B. natalensis. Karyology showed that the yellowfish were hexaploid, B. aeneus and B. kimberleyensis having 148 chromosomes while the other three species had 150 chromosomes. Because the karyotypes of the species were variable the fundamental number for each species was taken as the median value for ten spreads. Median fundamental numbers were B. aeneus = 196, B. natalensis = 200, B. kimberleyensis = 204, B. polylepis = 206 and B. capensis = 208. The lower chromosome number and higher fundamental number was considered the more apomorphic state for these species. Silver-staining of nucleoli showed that the yellowfish are probably undergoing the process of diploidization. Southern African Barbus and closely related species used for outgroup comparisons showed three levels of ploidy. The diploid species karyotyped were B.anoplus (2N=48), B. argenteus (2N=52), B. trimaculatus (2N=42-48), Labeo capensis (2N=48) and L. umbratus (2N=48); the tetraploid species were B. serra (2N=102), B. trevelyani (2N=±96), Pseudobarbus afer (2N=96) and P. burgi (2N=96); and the hexaploid species were B. marequensis (2N=130-150) and Varicorhinus nelspruitensis (2N=130-148). The taxonomic implications of polyploidy for the African cyprinids were considered, and its effect on species was discussed.
- Full Text:
- Date Issued: 1989
- Authors: Oellermann, Lawrence Keith
- Date: 1989
- Subjects: Barbus -- South Africa Cyprinidae -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5192 , http://hdl.handle.net/10962/d1001968
- Description: The southern African yellowfish (Barbus aeneus, B. capensls, B. kimberleyensis, B. natalensis and B. polylepis) are very similar, which limits the utility of traditional taxonomic methods. For this reason yellowfish similarities were explored using multivariate analysis and karyology. Meristic, morphometric and Truss (body shape) data were examined using multiple discriminant, principal component and cluster analyses. The morphological study disclosed that although the species were very similar two distinct groups occurred; B. aeneus-B. kimberleyensis and B. capensis-B. polylepis-B. natalensis. Karyology showed that the yellowfish were hexaploid, B. aeneus and B. kimberleyensis having 148 chromosomes while the other three species had 150 chromosomes. Because the karyotypes of the species were variable the fundamental number for each species was taken as the median value for ten spreads. Median fundamental numbers were B. aeneus = 196, B. natalensis = 200, B. kimberleyensis = 204, B. polylepis = 206 and B. capensis = 208. The lower chromosome number and higher fundamental number was considered the more apomorphic state for these species. Silver-staining of nucleoli showed that the yellowfish are probably undergoing the process of diploidization. Southern African Barbus and closely related species used for outgroup comparisons showed three levels of ploidy. The diploid species karyotyped were B.anoplus (2N=48), B. argenteus (2N=52), B. trimaculatus (2N=42-48), Labeo capensis (2N=48) and L. umbratus (2N=48); the tetraploid species were B. serra (2N=102), B. trevelyani (2N=±96), Pseudobarbus afer (2N=96) and P. burgi (2N=96); and the hexaploid species were B. marequensis (2N=130-150) and Varicorhinus nelspruitensis (2N=130-148). The taxonomic implications of polyploidy for the African cyprinids were considered, and its effect on species was discussed.
- Full Text:
- Date Issued: 1989
The kinetics and mechanism of the oxidation of chromium (III) chloride
- Authors: Sole, Kathryn Clare
- Date: 1989 , 2013-08-28
- Subjects: Chromium chloride--Oxidation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4301 , http://hdl.handle.net/10962/d1004921 , Chromium chloride--Oxidation
- Description: The kinetic behaviour of anhydrous CrCl₃ in gaseous oxidising atmospheres has been examined in the temperature range 350 to 630°C in order to identify optimum reaction conditions and to establish the mechanism by which the reaction is controlled. The reaction under consideration is CrCl₃ (s) + ¾ O₂ (g) → ½ Cr₂O₃ (s) + ³/₂ Cl₂ (g). The main experimental techniques used were isothermal and programmed-temperature thermogravimetry, supplemented by scanning electron-microscopy, surface-area determinations and porosity measurements. The effects of sample pelletisation, gas flowrate, temperature, oxygen partial pressure, pellet porosity and the addition of other oxide species on the rate and extent of reaction have been studied. The reaction is shown to occur in a single step, starting at -350°C under non-isothermal conditions, and exhibiting a deceleratory rate over most of the reaction. Isothermal thermogravimetric curves were fitted to a number of kinetic rate expressions, and a series of statistical analyses used to identify the rate equation which best describes the experimental data. Supporting evidence was provided by scanning electron-microscopic examination of partially-reacted samples. It is concluded that the reaction is under chemical control, and that reaction occurs by means of a linearly-advancing reactant-product interface. The reaction kinetics can be described by a contracting-geometry rate expression. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 1989
- Authors: Sole, Kathryn Clare
- Date: 1989 , 2013-08-28
- Subjects: Chromium chloride--Oxidation
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4301 , http://hdl.handle.net/10962/d1004921 , Chromium chloride--Oxidation
- Description: The kinetic behaviour of anhydrous CrCl₃ in gaseous oxidising atmospheres has been examined in the temperature range 350 to 630°C in order to identify optimum reaction conditions and to establish the mechanism by which the reaction is controlled. The reaction under consideration is CrCl₃ (s) + ¾ O₂ (g) → ½ Cr₂O₃ (s) + ³/₂ Cl₂ (g). The main experimental techniques used were isothermal and programmed-temperature thermogravimetry, supplemented by scanning electron-microscopy, surface-area determinations and porosity measurements. The effects of sample pelletisation, gas flowrate, temperature, oxygen partial pressure, pellet porosity and the addition of other oxide species on the rate and extent of reaction have been studied. The reaction is shown to occur in a single step, starting at -350°C under non-isothermal conditions, and exhibiting a deceleratory rate over most of the reaction. Isothermal thermogravimetric curves were fitted to a number of kinetic rate expressions, and a series of statistical analyses used to identify the rate equation which best describes the experimental data. Supporting evidence was provided by scanning electron-microscopic examination of partially-reacted samples. It is concluded that the reaction is under chemical control, and that reaction occurs by means of a linearly-advancing reactant-product interface. The reaction kinetics can be described by a contracting-geometry rate expression. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 1989
The life and times of Ethel Tawse Jollie : a case study of the transference and adaptation of British social and political ideas of the Edwardian era to a colonial society
- Authors: Lowry, Daniel William
- Date: 1989
- Subjects: Jollie, Ethel Tawse, 1876-1950 Zimbabwe -- History -- 1890-1965
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2525 , http://hdl.handle.net/10962/d1001854
- Description: This is an appraisal of the career of Ethel Tawse Jollie (1876-1950), the first woman parliamentarian in Southern Rhodesia, and the British Empire overseas, prolific writer and leading intellectual of her political generation who played a key role in the achievement of responsible government in Southern Rhodesia in 1923. As the founder and principal organiser of the Responsible Government Association she imported from Britain a singular political philosophy which made a lasting impression on Rhodesia's political character and social identity. She was an influential figure in British imperialist circles and in the women's suffrage controversy. No other Rhodesian politician had achieved such prominence in the metropole, or possessed such a thoroughly formed, comprehensive ideology, and the propaganda skills necessary to give it effect. The study traces the formation of her ideas within the intellectual milieu of pre-1914 Britain and - through her - its subsequent adaptation in Rhodesia; how, through her marriage to Archibald Colquhoun - explorer, writer and Cecil Rhodes's first Administrator of Mashonaland - she became steeped in the ideology of the Edwardian Radical Right - that reaction to imperial decline denoted by the slogan 'National Efficiency'. By 1915. when she arrived in Rhodesia, she had come to believe that by 1915, when she arrived in Rhodesia, she had come to believe that the salvation of the Empire lay in its 'patriotic' periphery where it was possible to create new societies on Radical Right principles. Both in and out of parliament she gave to Rhodesian public policy and identity a distinct Radical Right hue, which she further enhanced by her involvement in various extra parliamentary pressure groups. It is a life and times study and considerable use is made of contemporary ballads and novels in the belief that immersion in the atmosphere of the period is particularly useful in an intellectual biography of this kind. Comparisons are also made with other British peripheries notably Ulster, Canada and New Zealand. The study challenges the traditional view of Rhodesia as a neo-Victorian intellectual backwater; seeing it rather as a society which continued to import selectively ideas from elsewhere in the Empire. It should interest Commonwealth and - because of its central character - women's historians.
- Full Text:
- Date Issued: 1989
- Authors: Lowry, Daniel William
- Date: 1989
- Subjects: Jollie, Ethel Tawse, 1876-1950 Zimbabwe -- History -- 1890-1965
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2525 , http://hdl.handle.net/10962/d1001854
- Description: This is an appraisal of the career of Ethel Tawse Jollie (1876-1950), the first woman parliamentarian in Southern Rhodesia, and the British Empire overseas, prolific writer and leading intellectual of her political generation who played a key role in the achievement of responsible government in Southern Rhodesia in 1923. As the founder and principal organiser of the Responsible Government Association she imported from Britain a singular political philosophy which made a lasting impression on Rhodesia's political character and social identity. She was an influential figure in British imperialist circles and in the women's suffrage controversy. No other Rhodesian politician had achieved such prominence in the metropole, or possessed such a thoroughly formed, comprehensive ideology, and the propaganda skills necessary to give it effect. The study traces the formation of her ideas within the intellectual milieu of pre-1914 Britain and - through her - its subsequent adaptation in Rhodesia; how, through her marriage to Archibald Colquhoun - explorer, writer and Cecil Rhodes's first Administrator of Mashonaland - she became steeped in the ideology of the Edwardian Radical Right - that reaction to imperial decline denoted by the slogan 'National Efficiency'. By 1915. when she arrived in Rhodesia, she had come to believe that by 1915, when she arrived in Rhodesia, she had come to believe that the salvation of the Empire lay in its 'patriotic' periphery where it was possible to create new societies on Radical Right principles. Both in and out of parliament she gave to Rhodesian public policy and identity a distinct Radical Right hue, which she further enhanced by her involvement in various extra parliamentary pressure groups. It is a life and times study and considerable use is made of contemporary ballads and novels in the belief that immersion in the atmosphere of the period is particularly useful in an intellectual biography of this kind. Comparisons are also made with other British peripheries notably Ulster, Canada and New Zealand. The study challenges the traditional view of Rhodesia as a neo-Victorian intellectual backwater; seeing it rather as a society which continued to import selectively ideas from elsewhere in the Empire. It should interest Commonwealth and - because of its central character - women's historians.
- Full Text:
- Date Issued: 1989
The life and times of Kama Chungwa, 1798-1875
- Authors: Yekela, Drusilla Siziwe
- Date: 1989
- Subjects: Kama, William, 1798-1875 , Shaw, William, 1798-1872 , Methodist Church of Southern Africa -- Missions , Gqunukhwebe (African people) -- History , Wesleyville mission , Gqunukhwebe (African people) -- Kings and rulers , South Africa -- History -- Frontier Wars, 1811-1878 , South Africa -- History -- Xhosa Cattle-Killing, 1856-1857 , Converts -- South Africa , Cape of Good Hope (South Africa) -- Politics and government
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2520 , http://hdl.handle.net/10962/d1001849
- Description: Few students of History understand the derivation and/or origin of the Gqunukhwebe oath "Ndifung' uChungw' efel' ennyameni: I swear by Chungwa who is lying dead at Mnyameni (Alexandria)." A desire to eludicate this point and other related facts inspired me to undertake a close examination of the history of the Gqunukhwebe people, selecting as my main theme the life-work of Chief Kama. In the first chapter I am discussing the creation of the Gqunukhwebe Chiefdom under Khwane by the Xhosa King, Tshiwo. The central theme here is the Black-White confrontation of the 17th - 18th centuries on the Cape Eastern Frontier. As a result of the collision the Gqunukhwebe people were forced to make a home on the banks of the Thwecu River along the east coast. It was here that Kama reached early manhood. The second chapter describes the establishment of Wesleyville Missionary Station by William Shaw in 1823, the first Methodist Missionary Institution in all Xhosaland. In chapter three the discussion centers on the significance of Kama's conversion. An unforeseen outcome of his public profession of the Christian faith was that it not only stigmatized the latter religion as a force destructive of the old order in Xhosa society, but it also reshaped Kama's political image for the good of his religious life. He not only fled from the neighbourhood of his relations and sojourned in a strange land, but also reinforced the Colonial forces in the contemporary frontier struggles. His integrity, self-sacrifice and pro-Colonial inclination eventually won him Middledrift. Chapter four opens with Kama's settling in Middledrift. The theme here is two-pronged. It presents the 'Cattle-Killing' delusion as a source of new trials for the 'priest-chief', and at the same time exposes the Colonial Government's efforts to gain ascendancy above the Xhosa chiefs. Kama's land was the first testing ground in this respect, and the Chief was initially agreeable to the scheme. Chapter five alludes to instances of Chief Kama's unco-operative attitude as signs that his compromising spirit had its limits. An atmosphere of disregard towards Kama pervades the period. But the adversities that threatened to dominate his later life did not by any means shake his Christian principles and convictions. The traces of his good works may to this day be seen in Middledrift, the traditional home of the Kamas.
- Full Text:
- Date Issued: 1989
- Authors: Yekela, Drusilla Siziwe
- Date: 1989
- Subjects: Kama, William, 1798-1875 , Shaw, William, 1798-1872 , Methodist Church of Southern Africa -- Missions , Gqunukhwebe (African people) -- History , Wesleyville mission , Gqunukhwebe (African people) -- Kings and rulers , South Africa -- History -- Frontier Wars, 1811-1878 , South Africa -- History -- Xhosa Cattle-Killing, 1856-1857 , Converts -- South Africa , Cape of Good Hope (South Africa) -- Politics and government
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2520 , http://hdl.handle.net/10962/d1001849
- Description: Few students of History understand the derivation and/or origin of the Gqunukhwebe oath "Ndifung' uChungw' efel' ennyameni: I swear by Chungwa who is lying dead at Mnyameni (Alexandria)." A desire to eludicate this point and other related facts inspired me to undertake a close examination of the history of the Gqunukhwebe people, selecting as my main theme the life-work of Chief Kama. In the first chapter I am discussing the creation of the Gqunukhwebe Chiefdom under Khwane by the Xhosa King, Tshiwo. The central theme here is the Black-White confrontation of the 17th - 18th centuries on the Cape Eastern Frontier. As a result of the collision the Gqunukhwebe people were forced to make a home on the banks of the Thwecu River along the east coast. It was here that Kama reached early manhood. The second chapter describes the establishment of Wesleyville Missionary Station by William Shaw in 1823, the first Methodist Missionary Institution in all Xhosaland. In chapter three the discussion centers on the significance of Kama's conversion. An unforeseen outcome of his public profession of the Christian faith was that it not only stigmatized the latter religion as a force destructive of the old order in Xhosa society, but it also reshaped Kama's political image for the good of his religious life. He not only fled from the neighbourhood of his relations and sojourned in a strange land, but also reinforced the Colonial forces in the contemporary frontier struggles. His integrity, self-sacrifice and pro-Colonial inclination eventually won him Middledrift. Chapter four opens with Kama's settling in Middledrift. The theme here is two-pronged. It presents the 'Cattle-Killing' delusion as a source of new trials for the 'priest-chief', and at the same time exposes the Colonial Government's efforts to gain ascendancy above the Xhosa chiefs. Kama's land was the first testing ground in this respect, and the Chief was initially agreeable to the scheme. Chapter five alludes to instances of Chief Kama's unco-operative attitude as signs that his compromising spirit had its limits. An atmosphere of disregard towards Kama pervades the period. But the adversities that threatened to dominate his later life did not by any means shake his Christian principles and convictions. The traces of his good works may to this day be seen in Middledrift, the traditional home of the Kamas.
- Full Text:
- Date Issued: 1989
The metabolism of abscisic acid in higher plant tissues
- Authors: Cowan, Ashton Keith
- Date: 1989
- Subjects: Plants -- Metabolism Plant cells and tissues Abscisic acid -- Metabolism
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4176 , http://hdl.handle.net/10962/d1002024
- Description: The biosynthesis of ABA from R-[2-¹⁴C]-MVA was demonstrated in Persea americana cv. Fuerte mesocarp and in mature seeds of Hordeum vulgare cv. Dyan and cv. Himalaya. Radioactivity from R-[2-¹⁴-C]-MVA was also incorporated into the 1',4'-trans ABA diol in Persea americana mesocarp and a possible role for this metabolite as a precursor of ABA in plants is discussed. The biosynthesis of ABA from MVA could not be demonstrated in either turgid and waterstressed Hordeum vulgare cv. Dyan, Pisum sativum cv. Black-eyed Susan and Phaseolus vulgaris cv. Top-crop or in immature seeds of Pisum sativum and Phaseolus vulgaris. (R,S,)-[2-¹⁴C]-ABA was catabolised to PA, DPA and aqueous conjugates in leaves and mature seeds of Hordeum vulgare cv. Dyan, seedlings and immature seeds of Pisum sativum and Phaseolus vulgaris and in mesocarp from ripening fruits of Persea americana. PA and DPA were identified by either microchemical methods and/or capillary GC-MS. 7'-Hydroxy ABA was characterised as a novel ABA catabolite in light-grown and etiolated leaves of Hordeum vulgare by capillary GC-MS. Circular dichroism analysis revealed that it was derived predominantly from the (R)-enantiomer of ABA. This catabolite was absent in similar studies using the dicotyledons Pisum sativum and Phaseolus vulgaris. Refeeding studies with [¹⁴C]-PA, [C]-DPA and [¹⁴C]-7'-hydroxy ABA were used to confirm the metabolic interrelationship between ABA and its catabolites in both vegetative and non-vegetative tissues from monocotyledonous and dicotyledonous species. The methyl ester of (R,S,)-ABA was hydrolysed efficiently by light-grown leaves of Hordeum vulgare. Older, vegetative tissues catabolised (R,S,)-ABA more efficiently than their younger counterparts. In contrast, small, immature seeds of Pisum sativum catabolised (R,S,)-ABA more effectively than larger, immature seeds of this species. Light did not appear to influence ABA biosynthesis but markedly enhanced ABA catabolism. Light stimulated the overall rate of ABA catabolism in both vegetative and non-vegetative tissue. Water stress reduced ABA catabolism in Hordeum vulgare leaves but had little effect on this process in Phaseolus vulgaris seedlings. Pretreatment of tissues with (R,S,)-ABA retarded the catabolism of (R,S,)-[2-¹⁴C]-ABA, negating ABA-induced conversion to PA. Cycloheximide inhibited ABA biosynthesis and catabolism but did not affect ABA conjugation. Chloramphenicol and lincomycin had little or no effect on ABA metabolism suggesting that the enzymes involved were labile and cytoplasmic in origin. Ancymidol and cycocel inhibited ABA biosynthesis while AM01618 stimulated this process. The cytokinins, benzyladenine, kinetin, isopentenyl adenine and zeatin also inhibited ABA biosynthesis. These results are discussed in relation to the possible involvement of carotenoids in ABA biosynthesis. AM01618, ancymidol andcycocel did not significantly influence the conversion of ABA to PA and DPA while cytokinins appeared to enhance this process only in vegetative tissue. The information derived from these studies was then used in attempts to develop a cell-free system from higher plants capable of metabolising ABA. A cell-free system prepared from imbibed Hordeum vulgare cv. Dyan embryos biosynthesized and catabolised ABA. This is the first demonstration of a cell-free system from non-vegetative tissue capable of metabolising ABA and could prove useful for elucidating its biosynthetic route. This cell-free system generated the terpenyl pyrophosphates IPP, FPP and GGPP from MVA. ABA was produced from both MVA and IPP in the presence of 0₂ and NADPH. The biosynthesis of ABA was stimulated by the addition of the squalene 2,3-oxide cyclase and kaurene synthetase inhibitor, AM01618 and a "cold-pool trap" of (R,S,)-ABA. Ancymidol, cycocel and cytokinins reduced incorporation of label from MVA into ABA. Similar cell-free preparations, in the absence of AM01618, converted (R,S,)-[2-¹⁴-C]-ABA into PA, 7'-hydroxy ABA and water-soluble conjugates. Although the methyl ester of (R,S,)-ABA was efficiently hydrolysed in this cell-free system no DPA was generated. The possible involvement of mixed function oxidase activity and soluble oxidases is discussed in relation to ABA metabolism. While cell-free preparations from Persea americana cv. Fuerte mesocarp and immature seeds of Pisum sativum and Phaseolus vulgaris were unable to synthesize ABA from MVA, these tissue homogenates converted ABA into more polar acidic products. PA and DPA were identified as products of ABA catabolism in extracts from immature seeds of Phaseolus vulgaris and the l',4'-cis diol of ABA in extracts from Pisum sativum immature seeds
- Full Text:
- Date Issued: 1989
- Authors: Cowan, Ashton Keith
- Date: 1989
- Subjects: Plants -- Metabolism Plant cells and tissues Abscisic acid -- Metabolism
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4176 , http://hdl.handle.net/10962/d1002024
- Description: The biosynthesis of ABA from R-[2-¹⁴C]-MVA was demonstrated in Persea americana cv. Fuerte mesocarp and in mature seeds of Hordeum vulgare cv. Dyan and cv. Himalaya. Radioactivity from R-[2-¹⁴-C]-MVA was also incorporated into the 1',4'-trans ABA diol in Persea americana mesocarp and a possible role for this metabolite as a precursor of ABA in plants is discussed. The biosynthesis of ABA from MVA could not be demonstrated in either turgid and waterstressed Hordeum vulgare cv. Dyan, Pisum sativum cv. Black-eyed Susan and Phaseolus vulgaris cv. Top-crop or in immature seeds of Pisum sativum and Phaseolus vulgaris. (R,S,)-[2-¹⁴C]-ABA was catabolised to PA, DPA and aqueous conjugates in leaves and mature seeds of Hordeum vulgare cv. Dyan, seedlings and immature seeds of Pisum sativum and Phaseolus vulgaris and in mesocarp from ripening fruits of Persea americana. PA and DPA were identified by either microchemical methods and/or capillary GC-MS. 7'-Hydroxy ABA was characterised as a novel ABA catabolite in light-grown and etiolated leaves of Hordeum vulgare by capillary GC-MS. Circular dichroism analysis revealed that it was derived predominantly from the (R)-enantiomer of ABA. This catabolite was absent in similar studies using the dicotyledons Pisum sativum and Phaseolus vulgaris. Refeeding studies with [¹⁴C]-PA, [C]-DPA and [¹⁴C]-7'-hydroxy ABA were used to confirm the metabolic interrelationship between ABA and its catabolites in both vegetative and non-vegetative tissues from monocotyledonous and dicotyledonous species. The methyl ester of (R,S,)-ABA was hydrolysed efficiently by light-grown leaves of Hordeum vulgare. Older, vegetative tissues catabolised (R,S,)-ABA more efficiently than their younger counterparts. In contrast, small, immature seeds of Pisum sativum catabolised (R,S,)-ABA more effectively than larger, immature seeds of this species. Light did not appear to influence ABA biosynthesis but markedly enhanced ABA catabolism. Light stimulated the overall rate of ABA catabolism in both vegetative and non-vegetative tissue. Water stress reduced ABA catabolism in Hordeum vulgare leaves but had little effect on this process in Phaseolus vulgaris seedlings. Pretreatment of tissues with (R,S,)-ABA retarded the catabolism of (R,S,)-[2-¹⁴C]-ABA, negating ABA-induced conversion to PA. Cycloheximide inhibited ABA biosynthesis and catabolism but did not affect ABA conjugation. Chloramphenicol and lincomycin had little or no effect on ABA metabolism suggesting that the enzymes involved were labile and cytoplasmic in origin. Ancymidol and cycocel inhibited ABA biosynthesis while AM01618 stimulated this process. The cytokinins, benzyladenine, kinetin, isopentenyl adenine and zeatin also inhibited ABA biosynthesis. These results are discussed in relation to the possible involvement of carotenoids in ABA biosynthesis. AM01618, ancymidol andcycocel did not significantly influence the conversion of ABA to PA and DPA while cytokinins appeared to enhance this process only in vegetative tissue. The information derived from these studies was then used in attempts to develop a cell-free system from higher plants capable of metabolising ABA. A cell-free system prepared from imbibed Hordeum vulgare cv. Dyan embryos biosynthesized and catabolised ABA. This is the first demonstration of a cell-free system from non-vegetative tissue capable of metabolising ABA and could prove useful for elucidating its biosynthetic route. This cell-free system generated the terpenyl pyrophosphates IPP, FPP and GGPP from MVA. ABA was produced from both MVA and IPP in the presence of 0₂ and NADPH. The biosynthesis of ABA was stimulated by the addition of the squalene 2,3-oxide cyclase and kaurene synthetase inhibitor, AM01618 and a "cold-pool trap" of (R,S,)-ABA. Ancymidol, cycocel and cytokinins reduced incorporation of label from MVA into ABA. Similar cell-free preparations, in the absence of AM01618, converted (R,S,)-[2-¹⁴-C]-ABA into PA, 7'-hydroxy ABA and water-soluble conjugates. Although the methyl ester of (R,S,)-ABA was efficiently hydrolysed in this cell-free system no DPA was generated. The possible involvement of mixed function oxidase activity and soluble oxidases is discussed in relation to ABA metabolism. While cell-free preparations from Persea americana cv. Fuerte mesocarp and immature seeds of Pisum sativum and Phaseolus vulgaris were unable to synthesize ABA from MVA, these tissue homogenates converted ABA into more polar acidic products. PA and DPA were identified as products of ABA catabolism in extracts from immature seeds of Phaseolus vulgaris and the l',4'-cis diol of ABA in extracts from Pisum sativum immature seeds
- Full Text:
- Date Issued: 1989
The modification of a computer simulation for use in the professional training of South African secondary school teachers with specific reference to the probationary year
- Authors: Marsh, Cecille Joan Anna
- Date: 1989
- Subjects: Computer simulations , High school teachers , Teacher training
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1376 , http://hdl.handle.net/10962/d1001442
- Description: The topic of this thesis arose out of a desire to meet the need for a practical means of supplementing the preparation of Higher Diploma of Education (H.D.E.) students for their future role as first-year teachers. It was established that this need was not adequately filled by conventional university teacher-training methods. The literature about computerised simulation of role-playing and teaching activities was investigated and the investigation indicated that such simulations had been relatively successful. A published American computer simulation, TENURE, in which the student plays the role of a first-year teacher, was selected for modification to meet the needs of South African students. This program is implemented in the TUTOR computer language and runs on the Control Data South Africa PLATO system. In order to determine the needs of South African students, two groups of Rhodes University students worked through the simulation as it was being modified. The modifications were adapted according to the students' responses to a questionnaire. The simulation has been tested by 72 H.D.E. students and several educationists and the response has been positive
- Full Text:
- Date Issued: 1989
- Authors: Marsh, Cecille Joan Anna
- Date: 1989
- Subjects: Computer simulations , High school teachers , Teacher training
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1376 , http://hdl.handle.net/10962/d1001442
- Description: The topic of this thesis arose out of a desire to meet the need for a practical means of supplementing the preparation of Higher Diploma of Education (H.D.E.) students for their future role as first-year teachers. It was established that this need was not adequately filled by conventional university teacher-training methods. The literature about computerised simulation of role-playing and teaching activities was investigated and the investigation indicated that such simulations had been relatively successful. A published American computer simulation, TENURE, in which the student plays the role of a first-year teacher, was selected for modification to meet the needs of South African students. This program is implemented in the TUTOR computer language and runs on the Control Data South Africa PLATO system. In order to determine the needs of South African students, two groups of Rhodes University students worked through the simulation as it was being modified. The modifications were adapted according to the students' responses to a questionnaire. The simulation has been tested by 72 H.D.E. students and several educationists and the response has been positive
- Full Text:
- Date Issued: 1989