The biology of the South African cliff swallow hirundo spilodera
- Authors: Earlé, Roy Anthony
- Date: 1986
- Subjects: Hirundo pyrrhonota Birds -- Breeding -- South Africa Birds -- Behavior -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5631 , http://hdl.handle.net/10962/d1004927
- Description: The general biology of the South African Cliff Swallow Hirundo spilodera was studied over a two year period in the central Orange Free State. This species is highly colonial, nesting mostly on man-made structures such as concrete road bridges. Adult birds were usually faithful to their breeding colony and very few individuals changed colonies. The Cliff Swallow had a surprisingly large vocal repertoire for a swallow and contact calls of the young were individually recognizable. Three species-specific ectoparasites parasitized the Cliff Swallow but none seemed to have a noticeable negative effect on the swallows. Breeding started earlier in larger colonies than in smaller ones and conspecific brood parasitism was a common feature in some colonies. Individual pairs made up to four breeding attempts per season. The findings of this study are compared with the available information on other members of the Hirundinidae and the advantages and costs of Cliff Swallow coloniality are discussed.
- Full Text:
- Date Issued: 1986
- Authors: Earlé, Roy Anthony
- Date: 1986
- Subjects: Hirundo pyrrhonota Birds -- Breeding -- South Africa Birds -- Behavior -- South Africa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5631 , http://hdl.handle.net/10962/d1004927
- Description: The general biology of the South African Cliff Swallow Hirundo spilodera was studied over a two year period in the central Orange Free State. This species is highly colonial, nesting mostly on man-made structures such as concrete road bridges. Adult birds were usually faithful to their breeding colony and very few individuals changed colonies. The Cliff Swallow had a surprisingly large vocal repertoire for a swallow and contact calls of the young were individually recognizable. Three species-specific ectoparasites parasitized the Cliff Swallow but none seemed to have a noticeable negative effect on the swallows. Breeding started earlier in larger colonies than in smaller ones and conspecific brood parasitism was a common feature in some colonies. Individual pairs made up to four breeding attempts per season. The findings of this study are compared with the available information on other members of the Hirundinidae and the advantages and costs of Cliff Swallow coloniality are discussed.
- Full Text:
- Date Issued: 1986
The conservation status of some unique plant communities in the Eastern Cape
- Authors: Everard, David Alexander
- Date: 1986 , 2013-03-14
- Subjects: Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa , Plant conservation -- South Africa -- Western Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4250 , http://hdl.handle.net/10962/d1007497 , Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa , Plant conservation -- South Africa -- Western Cape
- Description: In response to a growing concern over the rising rates of extinction of the world's plants and of habitat destruction, studies of Southern African threatened plants were initiated in the 1970's. These studies, which have largely concentrated on Western Cape flora, led to the publication of "Threatened Plants of Southern Africa" by Hall et al., 1980, which attempted to list as many threatened or possibly threatened species as possible. It was however marred by a lack of recent herbarium records and detailed studies from many parts of the region, the Eastern Cape being one of these. In order to extend these detailed studies to gain a clearer picture of the numbers of threatened species in the Eastern Cape and evaluate the conservation status of Eastern Cape vegetation this project was initiated. Initially lists of possibly threatened and endemic taxa of the Eastern Cape were compiled from various sources. These listed taxa were then checked against herbarium records, all available information being filled onto index cards for filing purposes. This paper-based filing system was then transferred into a computer-based data bank to facilitate the efficient storage and retrieval of information. Results from this data bank show that there are 662 variously threatened plant taxa in the Eastern Cape, many of which fall into temporary categories which need to be clarified by investigation in the field. Primarily based on the above results, a table ranking the various vegetation types into an order of priority for investigations about conservation requirement was developed.Subtropical Thicket was found to be the vegetation type in most need of investigation and so an extensive phytosociological survey was carried out in the Valley Bushveld which forms the major portion of Subtropical Thicket in the Eastern Cape. Twelve sites were sampled for floristic and environmental variables along a rainfall gradient of between 300 mm yr⁻¹ and 1 000 mm yr⁻¹ and along a longitudinal gradient from the Buffalo River in the east to the Gamtoos-Kromme complex in the west. Floristic data W(re analysed using multivariate techniques of classification and ordination. A classification by two-way species indicator analysis revealed the Valley Bushveld to consist of two orders of thicket, the Kaffrarian Succulent Thicket containing the two suborders, Inland Succulent Thicket and the Coastal Succulent Thicket and the Kaffrarian Thicket containing Coastal Kaffrarian Thicket and Inland Kaffrarian Thicket. Ordina tion by detrended correspondence analysis also grouped sites according to these vegetation categories in a sequence along one axis, to which the rainfall gradient could be related. Variables such as diversity indices, numbers of endemics, numbers of threatened taxa and structural features were also extracted from the data and these were correlated with environmental variables by multiple regression analysis. Species richness and the percent woody component w\!re positively correlated with rainfall while endemism and percent succulent component were strongly negatively correlated with rainfall. Most of the other relationships were explained by interrelationships with rainfall. Finally the sites were evaluated according to floristic criteria indicative of conservation value. The Coastal Succulent Thicket appeared to have the highest conservation value mainly owing to high endemism, while Inland Kaffrarian Thicket was also important as it supports a high number of species. The thickets with high conservation value are therefore the thickets of coastal areas in the western parts of the Eastern Cape which receive a low rainfall and the thickets which receive a rainfall in excess of 800 mm. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 1986
- Authors: Everard, David Alexander
- Date: 1986 , 2013-03-14
- Subjects: Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa , Plant conservation -- South Africa -- Western Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4250 , http://hdl.handle.net/10962/d1007497 , Plant conservation -- South Africa -- Eastern Cape , Endangered species -- South Africa , Plant conservation -- South Africa -- Western Cape
- Description: In response to a growing concern over the rising rates of extinction of the world's plants and of habitat destruction, studies of Southern African threatened plants were initiated in the 1970's. These studies, which have largely concentrated on Western Cape flora, led to the publication of "Threatened Plants of Southern Africa" by Hall et al., 1980, which attempted to list as many threatened or possibly threatened species as possible. It was however marred by a lack of recent herbarium records and detailed studies from many parts of the region, the Eastern Cape being one of these. In order to extend these detailed studies to gain a clearer picture of the numbers of threatened species in the Eastern Cape and evaluate the conservation status of Eastern Cape vegetation this project was initiated. Initially lists of possibly threatened and endemic taxa of the Eastern Cape were compiled from various sources. These listed taxa were then checked against herbarium records, all available information being filled onto index cards for filing purposes. This paper-based filing system was then transferred into a computer-based data bank to facilitate the efficient storage and retrieval of information. Results from this data bank show that there are 662 variously threatened plant taxa in the Eastern Cape, many of which fall into temporary categories which need to be clarified by investigation in the field. Primarily based on the above results, a table ranking the various vegetation types into an order of priority for investigations about conservation requirement was developed.Subtropical Thicket was found to be the vegetation type in most need of investigation and so an extensive phytosociological survey was carried out in the Valley Bushveld which forms the major portion of Subtropical Thicket in the Eastern Cape. Twelve sites were sampled for floristic and environmental variables along a rainfall gradient of between 300 mm yr⁻¹ and 1 000 mm yr⁻¹ and along a longitudinal gradient from the Buffalo River in the east to the Gamtoos-Kromme complex in the west. Floristic data W(re analysed using multivariate techniques of classification and ordination. A classification by two-way species indicator analysis revealed the Valley Bushveld to consist of two orders of thicket, the Kaffrarian Succulent Thicket containing the two suborders, Inland Succulent Thicket and the Coastal Succulent Thicket and the Kaffrarian Thicket containing Coastal Kaffrarian Thicket and Inland Kaffrarian Thicket. Ordina tion by detrended correspondence analysis also grouped sites according to these vegetation categories in a sequence along one axis, to which the rainfall gradient could be related. Variables such as diversity indices, numbers of endemics, numbers of threatened taxa and structural features were also extracted from the data and these were correlated with environmental variables by multiple regression analysis. Species richness and the percent woody component w\!re positively correlated with rainfall while endemism and percent succulent component were strongly negatively correlated with rainfall. Most of the other relationships were explained by interrelationships with rainfall. Finally the sites were evaluated according to floristic criteria indicative of conservation value. The Coastal Succulent Thicket appeared to have the highest conservation value mainly owing to high endemism, while Inland Kaffrarian Thicket was also important as it supports a high number of species. The thickets with high conservation value are therefore the thickets of coastal areas in the western parts of the Eastern Cape which receive a low rainfall and the thickets which receive a rainfall in excess of 800 mm. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 1986
The contribution of psychogenic factors limiting prolonged work performed at different relative intensities
- Authors: Rorke, Stafford Conroy
- Date: 1986
- Subjects: Physical fitness -- Measurement , Physical fitness -- Psychological aspects , Work measurement , Work -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5103 , http://hdl.handle.net/10962/d1004772 , Physical fitness -- Measurement , Physical fitness -- Psychological aspects , Work measurement , Work -- Psychological aspects
- Description: This study investigated the physiological and psychological limitations to prolonged work performed at different relative intensities, through the use of an eclectic integrative methodology. Ten young male caucasian subjects (mean V0₂ max. 60,0 ml.kg⁻¹.min⁻¹ ± 7,9) were randomly exposed to treadmill runs at each of four relative intensities, namely 55%, 65%, 75% and 85% of V0₂ maximum, with the instruction to run to the point of subjective discomfort at which they were no longer willing to continue. Physiological measures of oxygen consumption (V0₂), heart rate (HR), respiratory exchange ratio (R) , minute ventilation volume (Vi), breathing frequency (Vf), tidal volume (Vt) and psychological measures of Ratings of Perceived Exertion (RPE), Perceived Thermal Comfo·rt (PTC), Perceived Pain and Perceived Fatigue were recorded throughout the protocol. The relative intensity was held constant by slight decreases in treadmill speed as subjects fatigued, and through feedback from an on-line oxygen consumption computer-aided data acquisition system. Significant increases in both physiological and psychological measures occurred with increases in relative intensity (p<0,05). HR and Vf increased overtime (p<0,05) whilst Rand Vt decreased over time (p < 0,05) . All psychological ratings increased in intensity over time (p < 0,05). Mean endurance times to exhaustion were 243 minutes ± 70 at 55% relative intensity, 159 minutes ±37 at 65%, 96 minutes ±25 at 75 % and 23 minutes +- 8 at 85%, being within the range reported by earlier researchers . A regression equation for prediction of endurance time given a known relative intensity was developed for this sample: % V0₂ max. = 117,8 + (-10,6 x LN (time)) (where r = -0,91) Convergence rankings indicate the greater contribution of local factors in the overall gestalt of perceived exertion, pain and fatigue, with biomechanical limitations to prolonged work (running) strongly implicated . High inter correlations between psychological rating scales suggest the use of the scale considered most applicable to the task at hand and the psychological response measure required. A coefficient of multiple correlation of 0,94 established the close interrelationship amongst the physiological and psychological parameters measured. Pre- and post-test Fatigue Cluster Analysis questionnaires indicated that the most important clusters contributing toward the sensation of fatigue and subsequent decision to cease activity were Task Aversion and General Fatigue (r = 0,96), followed by Leg Fatigue and Thirst. Motivation, the task at hand and an attainable goal appear to be important considerations in prolonged work performance. Relative intensity appears a valid tool for use in prolonged work studies due to its high predictive capacity for endurance performance times (r=-0,91). It is concluded that workloads considerably below 55% of maximal aerobic capacity are indicated as acceptable workloads for an 8 hour working day.
- Full Text:
- Date Issued: 1986
- Authors: Rorke, Stafford Conroy
- Date: 1986
- Subjects: Physical fitness -- Measurement , Physical fitness -- Psychological aspects , Work measurement , Work -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5103 , http://hdl.handle.net/10962/d1004772 , Physical fitness -- Measurement , Physical fitness -- Psychological aspects , Work measurement , Work -- Psychological aspects
- Description: This study investigated the physiological and psychological limitations to prolonged work performed at different relative intensities, through the use of an eclectic integrative methodology. Ten young male caucasian subjects (mean V0₂ max. 60,0 ml.kg⁻¹.min⁻¹ ± 7,9) were randomly exposed to treadmill runs at each of four relative intensities, namely 55%, 65%, 75% and 85% of V0₂ maximum, with the instruction to run to the point of subjective discomfort at which they were no longer willing to continue. Physiological measures of oxygen consumption (V0₂), heart rate (HR), respiratory exchange ratio (R) , minute ventilation volume (Vi), breathing frequency (Vf), tidal volume (Vt) and psychological measures of Ratings of Perceived Exertion (RPE), Perceived Thermal Comfo·rt (PTC), Perceived Pain and Perceived Fatigue were recorded throughout the protocol. The relative intensity was held constant by slight decreases in treadmill speed as subjects fatigued, and through feedback from an on-line oxygen consumption computer-aided data acquisition system. Significant increases in both physiological and psychological measures occurred with increases in relative intensity (p<0,05). HR and Vf increased overtime (p<0,05) whilst Rand Vt decreased over time (p < 0,05) . All psychological ratings increased in intensity over time (p < 0,05). Mean endurance times to exhaustion were 243 minutes ± 70 at 55% relative intensity, 159 minutes ±37 at 65%, 96 minutes ±25 at 75 % and 23 minutes +- 8 at 85%, being within the range reported by earlier researchers . A regression equation for prediction of endurance time given a known relative intensity was developed for this sample: % V0₂ max. = 117,8 + (-10,6 x LN (time)) (where r = -0,91) Convergence rankings indicate the greater contribution of local factors in the overall gestalt of perceived exertion, pain and fatigue, with biomechanical limitations to prolonged work (running) strongly implicated . High inter correlations between psychological rating scales suggest the use of the scale considered most applicable to the task at hand and the psychological response measure required. A coefficient of multiple correlation of 0,94 established the close interrelationship amongst the physiological and psychological parameters measured. Pre- and post-test Fatigue Cluster Analysis questionnaires indicated that the most important clusters contributing toward the sensation of fatigue and subsequent decision to cease activity were Task Aversion and General Fatigue (r = 0,96), followed by Leg Fatigue and Thirst. Motivation, the task at hand and an attainable goal appear to be important considerations in prolonged work performance. Relative intensity appears a valid tool for use in prolonged work studies due to its high predictive capacity for endurance performance times (r=-0,91). It is concluded that workloads considerably below 55% of maximal aerobic capacity are indicated as acceptable workloads for an 8 hour working day.
- Full Text:
- Date Issued: 1986
The contribution of William Gurnall (1616-1679) to the puritan concept of spiritual combat, with special emphasis on the role of faith
- Van Zyl, Frederick William James
- Authors: Van Zyl, Frederick William James
- Date: 1986
- Subjects: Gurnall, William, 1617-1679 , Puritans , Faith , Spiritual life -- Christianity -- History of doctrines
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1223 , http://hdl.handle.net/10962/d1003916
- Description: The Central figure in this thesis is William Gurnall M.A. (Cambridge) who lived from 1616 to 1679. He was the Rector of the Lavenham Parish church for 35 years, 1644/45-1679. He was one of the few Puritans who remained in the Established Church after the 1662 Act of Uniformity had been promulgated. His 'The Christian in Complete Armour' is one of the greatest practical-pastoral works to come from the pen of any Puritan. It is firmly based on Calvinistic theological principles. While holding common beliefs in many areas, Gurnall nevertheless was at odds with his fellow Puritans over certain crucial issues that directly affected his attitude to the Puritan revolution. His analysis of the person, being, nature, wiles, strategies and weapons of the Christian's great enemy and description of the Christian's resources such as the role of the shield of faith in its multiple uses, which constitute an important contribution to pastoral theory and practice are shown to arise out of Gurnall's theological stance, his own personal history, the history of East Anglia and of Lavenham in particular; his reflections on the 'Days of Great Confusions' and his deep concern for the breakdown in orderly society and the decline of genuine piety in the church. Basically we will concentrate on three issues: First. The real nature and locus of the Christian's spiritual warfare. Second. -- The means used for his investigation, namely, an examination of the person, power, methods and wiles of the Christian's great enemy and the vital role of the shield of faith. -- Third. His conclusions.
- Full Text:
- Date Issued: 1986
- Authors: Van Zyl, Frederick William James
- Date: 1986
- Subjects: Gurnall, William, 1617-1679 , Puritans , Faith , Spiritual life -- Christianity -- History of doctrines
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:1223 , http://hdl.handle.net/10962/d1003916
- Description: The Central figure in this thesis is William Gurnall M.A. (Cambridge) who lived from 1616 to 1679. He was the Rector of the Lavenham Parish church for 35 years, 1644/45-1679. He was one of the few Puritans who remained in the Established Church after the 1662 Act of Uniformity had been promulgated. His 'The Christian in Complete Armour' is one of the greatest practical-pastoral works to come from the pen of any Puritan. It is firmly based on Calvinistic theological principles. While holding common beliefs in many areas, Gurnall nevertheless was at odds with his fellow Puritans over certain crucial issues that directly affected his attitude to the Puritan revolution. His analysis of the person, being, nature, wiles, strategies and weapons of the Christian's great enemy and description of the Christian's resources such as the role of the shield of faith in its multiple uses, which constitute an important contribution to pastoral theory and practice are shown to arise out of Gurnall's theological stance, his own personal history, the history of East Anglia and of Lavenham in particular; his reflections on the 'Days of Great Confusions' and his deep concern for the breakdown in orderly society and the decline of genuine piety in the church. Basically we will concentrate on three issues: First. The real nature and locus of the Christian's spiritual warfare. Second. -- The means used for his investigation, namely, an examination of the person, power, methods and wiles of the Christian's great enemy and the vital role of the shield of faith. -- Third. His conclusions.
- Full Text:
- Date Issued: 1986
The development and evaluation of a Nd:YAG laser incorporating an unstable resonator
- Authors: De Kock, Trevor Neil
- Date: 1986
- Subjects: Nd-YAG lasers , Lasers -- Resonators , Laser beams
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5512 , http://hdl.handle.net/10962/d1008566 , Nd-YAG lasers , Lasers -- Resonators , Laser beams
- Description: Introduction: For approximately the last eight years the Laser Section of the National Physical Research Laboratory (NPRL) has been interested in inter alia, pulsed solid-state lasers and in particular, Nd:YAG. Investigations of various resonator types were undertaken with a view to the improvement of the laser parameters such as output energy, pulse width, beam quality and sensitivity to mirror misalignment. In 1980 a Nd: YAG laser employing a rotating prism Q-switch was constructed (Preussler (1980)). It involves rotating one of the two cavity reflectors so that they are parallel for only a brief instant in time. Typically the prism must rotate at a speed of 20 000 r.p.m. to ensure a single pulse output. Such lasers suffer from the tendency to emit multiple pulses, they are very noisy and they require frequent maintenance because of the short lifetime of the bearings. A resonator employing conventional curved mirrors and an electro-optical Q-switch was constructed in 1980 (Robertson & Preussler (1982)). In 1981 an electro-optically Q-swi tched laser making use of a crossed Porro-prism resonator was investigated due to its relative insensitivity to misalignment of the reflectors compared with the conventional mirror resonator (Nortier (1981)). Improvements in terms of output power, beam divergence and beam quality can be achieved by making use of a so-called unstable resonator. Such a laser has been investigated and is reported on in this study. Chapter 2 provides some background into laser theory and operation while chapter 3 deals with the theory of the unstable resonator. Chapter 4 provides details of the experimental equipment and techniques used in the work and chapter 5 discusses the evaluation of the project and results obtained.
- Full Text:
- Date Issued: 1986
- Authors: De Kock, Trevor Neil
- Date: 1986
- Subjects: Nd-YAG lasers , Lasers -- Resonators , Laser beams
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5512 , http://hdl.handle.net/10962/d1008566 , Nd-YAG lasers , Lasers -- Resonators , Laser beams
- Description: Introduction: For approximately the last eight years the Laser Section of the National Physical Research Laboratory (NPRL) has been interested in inter alia, pulsed solid-state lasers and in particular, Nd:YAG. Investigations of various resonator types were undertaken with a view to the improvement of the laser parameters such as output energy, pulse width, beam quality and sensitivity to mirror misalignment. In 1980 a Nd: YAG laser employing a rotating prism Q-switch was constructed (Preussler (1980)). It involves rotating one of the two cavity reflectors so that they are parallel for only a brief instant in time. Typically the prism must rotate at a speed of 20 000 r.p.m. to ensure a single pulse output. Such lasers suffer from the tendency to emit multiple pulses, they are very noisy and they require frequent maintenance because of the short lifetime of the bearings. A resonator employing conventional curved mirrors and an electro-optical Q-switch was constructed in 1980 (Robertson & Preussler (1982)). In 1981 an electro-optically Q-swi tched laser making use of a crossed Porro-prism resonator was investigated due to its relative insensitivity to misalignment of the reflectors compared with the conventional mirror resonator (Nortier (1981)). Improvements in terms of output power, beam divergence and beam quality can be achieved by making use of a so-called unstable resonator. Such a laser has been investigated and is reported on in this study. Chapter 2 provides some background into laser theory and operation while chapter 3 deals with the theory of the unstable resonator. Chapter 4 provides details of the experimental equipment and techniques used in the work and chapter 5 discusses the evaluation of the project and results obtained.
- Full Text:
- Date Issued: 1986
The development of the meaning of non-ostensive words in a group of primary school children
- Authors: Segal, Denise Erica
- Date: 1986
- Subjects: Connotation (Linguistics) , Children -- Language , Language acquisition
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2372 , http://hdl.handle.net/10962/d1004917 , Connotation (Linguistics) , Children -- Language , Language acquisition
- Description: The purpose of the present study was to investigate word meaning and its development in primary school children (6-12 years) . It was argued that the learning and development of the meanings of words such as pain cannot be primarily explained by means of ostensive definition. Furthermore, existing theories of word meaning which deal predominantly with substantive words fail to account for the learning of non-ostensive words. The pertinent psychological, linguistic and developmental psycholinguistic approaches to word meaning are reviewed briefly. The prototype approaches to word meaning are modified to apply to non-ostensive words . The focus is on conceptual meaning, that is, the way in which the senses of a word alter in different contexts. It is argued that the meaning of the word is its use in a diversity of linguistic contexts. The term "grammar" is applied in a unique way to encompass the meaning of the word (which stems in part from the words with which it co-occurs) as well as its selective use with other words in the language. Ninety-five metalinguistically-phrased tasks comprising short questions and picture-story sequences were analyzed in depth. The tasks were administered individually. A flexible interview afforded additional probing for each question. The analysis comprised percentage scores of responses at different age levels together with verbatim transcripts and qualitative descriptions: Uniformity, variation and developmental trends were found on different tasks for any particular word. Developmental trends were noted in children's understanding of particular words (for example, same), thereby extending the findings of previous researchers. There was evidence for a progression in children's ability to take into consideration that a word alters its sense according to the linguistic context in which it occurs (for example, same as it relates to chair versus dress versus pain). A comprehensive account of the words meaning could be established when a diversity of tasks was applied for each word. Children of different age levels employed different strategies in answering the questions posed. A model is proposed to describe the development of the meaning of non-ostensive words during the primary school years. It is suggested that psycholinguistic studies on word meaning be re-evaluated and that language and reading programmes incorporate the notion of "grammar". Application of this approach to the study of substantive word meaning in preschool children has important implications for theories of word meaning and for therapeutic intervention.
- Full Text:
- Date Issued: 1986
- Authors: Segal, Denise Erica
- Date: 1986
- Subjects: Connotation (Linguistics) , Children -- Language , Language acquisition
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:2372 , http://hdl.handle.net/10962/d1004917 , Connotation (Linguistics) , Children -- Language , Language acquisition
- Description: The purpose of the present study was to investigate word meaning and its development in primary school children (6-12 years) . It was argued that the learning and development of the meanings of words such as pain cannot be primarily explained by means of ostensive definition. Furthermore, existing theories of word meaning which deal predominantly with substantive words fail to account for the learning of non-ostensive words. The pertinent psychological, linguistic and developmental psycholinguistic approaches to word meaning are reviewed briefly. The prototype approaches to word meaning are modified to apply to non-ostensive words . The focus is on conceptual meaning, that is, the way in which the senses of a word alter in different contexts. It is argued that the meaning of the word is its use in a diversity of linguistic contexts. The term "grammar" is applied in a unique way to encompass the meaning of the word (which stems in part from the words with which it co-occurs) as well as its selective use with other words in the language. Ninety-five metalinguistically-phrased tasks comprising short questions and picture-story sequences were analyzed in depth. The tasks were administered individually. A flexible interview afforded additional probing for each question. The analysis comprised percentage scores of responses at different age levels together with verbatim transcripts and qualitative descriptions: Uniformity, variation and developmental trends were found on different tasks for any particular word. Developmental trends were noted in children's understanding of particular words (for example, same), thereby extending the findings of previous researchers. There was evidence for a progression in children's ability to take into consideration that a word alters its sense according to the linguistic context in which it occurs (for example, same as it relates to chair versus dress versus pain). A comprehensive account of the words meaning could be established when a diversity of tasks was applied for each word. Children of different age levels employed different strategies in answering the questions posed. A model is proposed to describe the development of the meaning of non-ostensive words during the primary school years. It is suggested that psycholinguistic studies on word meaning be re-evaluated and that language and reading programmes incorporate the notion of "grammar". Application of this approach to the study of substantive word meaning in preschool children has important implications for theories of word meaning and for therapeutic intervention.
- Full Text:
- Date Issued: 1986
The effect of the pesticide, endosulfan, on hepatic cytochrome P-450, liver and gill ultrastructure, and selected haematological parameters of Oreochromis Mossambicus (Peters, 1852) (Pisces : Cichlidae)
- Authors: Quick, Arthur Joseph Rex
- Date: 1986
- Subjects: Pesticides , Mozambique tilapia , Cichlids
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5195 , http://hdl.handle.net/10962/d1001971 , Pesticides , Mozambique tilapia , Cichlids
- Description: Two possible ways in which fish may acclimate to prolonged exposure· to sublethal levels of endosulfan were investigated: induction of the hepatic monooxygenase system and changes in haematology. These studies also involved an examination of the ultrastructure of liver and gill tissue. Endosulfan caused none of the characteristic phenobarbital-type inductive effects on the liver of Oreochromis mossambicus. There was no increase in cytochrome P-450 levels, microsomal protein or hepatosomatic index. The reasons for the lack of induction are discussed. The effect of endosulfan on the following haematological parameters was determined: haemoglobin, erythrocyte count, microhaematocrit, mean erythrocyte volume and mean erythrocyte haemoglobin concentration. The only effect was an increase in erythrocyte count. The value of changes in haematological parameters as indicators of pollutioninduced anemia in the field is discussed. No changes in gill ultrastructure were noted although electron micrographs of liver tissue showed lesions in hepatocytes. The diagnostic value of pollution-induced pathological changes on cell ultrastructure are discussed. Recommendations are made with regard to future large scale application of pesticides on or near large water bodies
- Full Text:
- Date Issued: 1986
- Authors: Quick, Arthur Joseph Rex
- Date: 1986
- Subjects: Pesticides , Mozambique tilapia , Cichlids
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5195 , http://hdl.handle.net/10962/d1001971 , Pesticides , Mozambique tilapia , Cichlids
- Description: Two possible ways in which fish may acclimate to prolonged exposure· to sublethal levels of endosulfan were investigated: induction of the hepatic monooxygenase system and changes in haematology. These studies also involved an examination of the ultrastructure of liver and gill tissue. Endosulfan caused none of the characteristic phenobarbital-type inductive effects on the liver of Oreochromis mossambicus. There was no increase in cytochrome P-450 levels, microsomal protein or hepatosomatic index. The reasons for the lack of induction are discussed. The effect of endosulfan on the following haematological parameters was determined: haemoglobin, erythrocyte count, microhaematocrit, mean erythrocyte volume and mean erythrocyte haemoglobin concentration. The only effect was an increase in erythrocyte count. The value of changes in haematological parameters as indicators of pollutioninduced anemia in the field is discussed. No changes in gill ultrastructure were noted although electron micrographs of liver tissue showed lesions in hepatocytes. The diagnostic value of pollution-induced pathological changes on cell ultrastructure are discussed. Recommendations are made with regard to future large scale application of pesticides on or near large water bodies
- Full Text:
- Date Issued: 1986
The effects of inbreeding and laboratory-rearing on a pyraustid moth, Mimorista pulchellalis Dyar (Lepidoptera: pyraustidae), imported for the biological control of jointed cactus in South Africa
- Authors: Wright, Margaret Dorothy
- Date: 1986
- Subjects: Pyralidae -- South Africa , Cactus -- South Africa , Moths -- South Africa , Insect pests -- Biological control -- South Africa , Inbreeding
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5615 , http://hdl.handle.net/10962/d1003123 , Pyralidae -- South Africa , Cactus -- South Africa , Moths -- South Africa , Insect pests -- Biological control -- South Africa , Inbreeding
- Description: Inbreeding was thought to be responsible for the loss in the second filial generation (F₂) of Amalafrida leithella Dyar, Cactoblastis mundelli Heinrich, Nanaia sp. Heinrich, Sigelgaita sp. Heinrich and Sigelgaita transilis Heinrich in the laboratory. This pre-empted the investigation of the effects of inbreeding on another cactophagous moth, Mimorista pulchellalis Dyar, an established biological control agent of jointed cactus in South Africa. Initially three populations were set up. A randomly-mating control (OUT 1) population, and a sibmating experimental (IN 1) population, consisted of laboratory-reared stock . A second experimental population (KR 1) comprised a small number of field-collected randomly-mating individuals which recreated the conditions under which the five abovementioned species were lost. The inbreeding depression of fifteen fitness components was assessed. The mean values of each component in each generation of treatments IN 1 and KR 1 were compared with those of OUT 1. In addition the mean values of IN 1 were regressed against the coefficients of inbreeding since inbreeding depression is linear with respect to the probability of two genes at any locus being homozygous through ancestry. The component egg viability was important because a reduction in OUT 1, IN 1 and KR 1 in the F₂ resulted from mated females producing no viable eggs. Duplicate treatments OUT 2, IN 2 and KR 2 were set up to confirm whether this was a general F₂ phenomenon. Assessment of the fitness components prevented a direct evaluation of the numbers of offspring produced. However a hypothetical estimate of population size and growth rate was made using the percentage survival calculated from life-table analysis. Although not statistically demonstrable in the component analysis, life table analysis indicated that egg viability suffered an inbreeding depression and affected population fitness. It was also evident that treatments OUT 1 and 2 were fitter than treatments IN 1 and 2 and KR 1 and 2 with respect to population fitness. Thus, inbreeding, resulting from sibmating and introduction of a small number of individuals to a laboratorYJ caused a decrease in numbers of offspring produced and population growth rate. This is important in relation to the demise of the cactophagous Lepidoptera and to future biological control programmes.
- Full Text:
- Date Issued: 1986
- Authors: Wright, Margaret Dorothy
- Date: 1986
- Subjects: Pyralidae -- South Africa , Cactus -- South Africa , Moths -- South Africa , Insect pests -- Biological control -- South Africa , Inbreeding
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5615 , http://hdl.handle.net/10962/d1003123 , Pyralidae -- South Africa , Cactus -- South Africa , Moths -- South Africa , Insect pests -- Biological control -- South Africa , Inbreeding
- Description: Inbreeding was thought to be responsible for the loss in the second filial generation (F₂) of Amalafrida leithella Dyar, Cactoblastis mundelli Heinrich, Nanaia sp. Heinrich, Sigelgaita sp. Heinrich and Sigelgaita transilis Heinrich in the laboratory. This pre-empted the investigation of the effects of inbreeding on another cactophagous moth, Mimorista pulchellalis Dyar, an established biological control agent of jointed cactus in South Africa. Initially three populations were set up. A randomly-mating control (OUT 1) population, and a sibmating experimental (IN 1) population, consisted of laboratory-reared stock . A second experimental population (KR 1) comprised a small number of field-collected randomly-mating individuals which recreated the conditions under which the five abovementioned species were lost. The inbreeding depression of fifteen fitness components was assessed. The mean values of each component in each generation of treatments IN 1 and KR 1 were compared with those of OUT 1. In addition the mean values of IN 1 were regressed against the coefficients of inbreeding since inbreeding depression is linear with respect to the probability of two genes at any locus being homozygous through ancestry. The component egg viability was important because a reduction in OUT 1, IN 1 and KR 1 in the F₂ resulted from mated females producing no viable eggs. Duplicate treatments OUT 2, IN 2 and KR 2 were set up to confirm whether this was a general F₂ phenomenon. Assessment of the fitness components prevented a direct evaluation of the numbers of offspring produced. However a hypothetical estimate of population size and growth rate was made using the percentage survival calculated from life-table analysis. Although not statistically demonstrable in the component analysis, life table analysis indicated that egg viability suffered an inbreeding depression and affected population fitness. It was also evident that treatments OUT 1 and 2 were fitter than treatments IN 1 and 2 and KR 1 and 2 with respect to population fitness. Thus, inbreeding, resulting from sibmating and introduction of a small number of individuals to a laboratorYJ caused a decrease in numbers of offspring produced and population growth rate. This is important in relation to the demise of the cactophagous Lepidoptera and to future biological control programmes.
- Full Text:
- Date Issued: 1986
The life and work of Robert Paul
- Johnson, Christopher Charles Bonsall
- Authors: Johnson, Christopher Charles Bonsall
- Date: 1986
- Subjects: Paul, Robert, 1906-1980 , Artists -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2510 , http://hdl.handle.net/10962/d1018631
- Description: [From Introduction] When Robert Paul died in 1980, his daughter Colette Wiles gave her father's art materials to an artist who was very close to both Robert and his wife in their last years - Dian Wright. The materials consisted of five different pigments and brushes cut into different shapes to suit the artist. This is remarkable when one considers his proficiency in a variety of media and his accurate portrayal in the far reaching studies he executed of the Zimbabwean landscape. Yet, it is characteristic of his resourcefulness that Paul could make 'something out of nothing'. Paul welcomed the opportunity of new landscape when he arrived in Rhodesia in 1927. Against the backdrop of a chosen isolation from the British Isles, Paul developed his own personal tracks in spite of any early influence through John Piper with the English Southern Landscape idioms of the 1920s. This was a fruitful isolation where the creation of his art retained influences but were manipulated according to his needs and unleashed with a proficiency sometimes equal to his peers, who later found fame under the term 'Neo-Romantics'. Paul remained an individual in Africa. My intention in this essay is three-fold; first, to illustrate the effects and influences of 'chosen' and 'enforced ' isolation on his work. Secondly, I wish to determine the extent of the influence that Piper and the Neo-Romantics had on Paul and to illustrate mostly with anecdotes his life and life-style. He was no mean character. His life-long obsessions with art, alcohol and women were played out with a flair and dry humour which few emulated in his era. Although a strictly academic approach can be applied to the assessment of his work, his life followed thoroughly unorthodox lines. As Bradshaw noted when he wrote the forward to the Catalogue of Paul's Retrospective in 1976, he (Paul) had no historical interests in the accepted sense of the word. , ABBYY FineReader 12
- Full Text:
- Date Issued: 1986
- Authors: Johnson, Christopher Charles Bonsall
- Date: 1986
- Subjects: Paul, Robert, 1906-1980 , Artists -- Zimbabwe
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2510 , http://hdl.handle.net/10962/d1018631
- Description: [From Introduction] When Robert Paul died in 1980, his daughter Colette Wiles gave her father's art materials to an artist who was very close to both Robert and his wife in their last years - Dian Wright. The materials consisted of five different pigments and brushes cut into different shapes to suit the artist. This is remarkable when one considers his proficiency in a variety of media and his accurate portrayal in the far reaching studies he executed of the Zimbabwean landscape. Yet, it is characteristic of his resourcefulness that Paul could make 'something out of nothing'. Paul welcomed the opportunity of new landscape when he arrived in Rhodesia in 1927. Against the backdrop of a chosen isolation from the British Isles, Paul developed his own personal tracks in spite of any early influence through John Piper with the English Southern Landscape idioms of the 1920s. This was a fruitful isolation where the creation of his art retained influences but were manipulated according to his needs and unleashed with a proficiency sometimes equal to his peers, who later found fame under the term 'Neo-Romantics'. Paul remained an individual in Africa. My intention in this essay is three-fold; first, to illustrate the effects and influences of 'chosen' and 'enforced ' isolation on his work. Secondly, I wish to determine the extent of the influence that Piper and the Neo-Romantics had on Paul and to illustrate mostly with anecdotes his life and life-style. He was no mean character. His life-long obsessions with art, alcohol and women were played out with a flair and dry humour which few emulated in his era. Although a strictly academic approach can be applied to the assessment of his work, his life followed thoroughly unorthodox lines. As Bradshaw noted when he wrote the forward to the Catalogue of Paul's Retrospective in 1976, he (Paul) had no historical interests in the accepted sense of the word. , ABBYY FineReader 12
- Full Text:
- Date Issued: 1986
The machine and painting: an investigation into the interrelationship(s) between technology and painting since 1945
- Authors: Hennig, Sybille
- Date: 1986
- Subjects: Art and technology Art, Modern -- 20th century -- History
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2468 , http://hdl.handle.net/10962/d1009435
- Description: Introduction: We, i.e. contemporary Western man, live in a society which has increasingly embraced Science and Technology as the ultimum bonum. The Machine, i.e. Science and Technology, has come to be seen as an impersonal force, a New God - omniscient, omnipotent: to be worshipped and, alas, also to be feared. This mythologem has come to pervade almost every sphere of our lives in a paradigmatic way to the extent where it is hardly ever recognized for what it is and hence fails to arouse the concern it merits. While some of the more perceptive minds - such as Erich Fromm, Rufino Tamayo, Carl Gustav Jung, Konrad Lorenz and Arthur Koestler, to mention but a few - have started ringing the alarm bells, the vast majority of our species seem to plunge ahead with their blinkers firmly in place (more or less contented as long as they can persude themselves that these blinkers were manufactured according to latest technological and scientific specifications). Man’s uniquely human powers - his creative intuition, his feelings, his moral and ethical potential, have become sadly neglected and mistrusted. Homo sapiens – “homo maniacus” as Koestler suggests? - is now at a crossroads: he has reached a point where the next step could be the last step and result in the annihilation of man as a species. Alternately, avoiding that, there is the outwardly less drastic but essentially equally alarming possibility of men becoming robots, while a third alternative has yet to be found. While it does appear as if a lot of young people, noticeably among students, have started reacting against the over mechanization of life, these reactions often tend to follow the swing-of-the-pendulum principle and veer towards the other extreme, throwing out the baby with the bathwater and falling prey to freak-out cults in a kind of mass-irrationalism, rejecting science and technology altogether. Artists who by their very nature perhaps are particularly sensitive - in a kind of seismographic way - to the currents and undercurrents of their age, have become aware of the effects of science and technology on our way of living, and many of them have in one way or another taken a stand in relation to the position of man in our highly technological world. Looking at the art produced over the last four decades, it is truly astonishing to what extent our changed world reflects in our art - a world and a Weltbild very different from that of our ancestors even just a few generations ago. The purpose of the present study is to survey some of the observations and commentaries that painters and certain kindred spirits from the sciences over the last few decades have offered, in the hope of, if not answering, at least defining and posing anew some of the questions that confront us with ever-increasing urgency.
- Full Text:
- Date Issued: 1986
- Authors: Hennig, Sybille
- Date: 1986
- Subjects: Art and technology Art, Modern -- 20th century -- History
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2468 , http://hdl.handle.net/10962/d1009435
- Description: Introduction: We, i.e. contemporary Western man, live in a society which has increasingly embraced Science and Technology as the ultimum bonum. The Machine, i.e. Science and Technology, has come to be seen as an impersonal force, a New God - omniscient, omnipotent: to be worshipped and, alas, also to be feared. This mythologem has come to pervade almost every sphere of our lives in a paradigmatic way to the extent where it is hardly ever recognized for what it is and hence fails to arouse the concern it merits. While some of the more perceptive minds - such as Erich Fromm, Rufino Tamayo, Carl Gustav Jung, Konrad Lorenz and Arthur Koestler, to mention but a few - have started ringing the alarm bells, the vast majority of our species seem to plunge ahead with their blinkers firmly in place (more or less contented as long as they can persude themselves that these blinkers were manufactured according to latest technological and scientific specifications). Man’s uniquely human powers - his creative intuition, his feelings, his moral and ethical potential, have become sadly neglected and mistrusted. Homo sapiens – “homo maniacus” as Koestler suggests? - is now at a crossroads: he has reached a point where the next step could be the last step and result in the annihilation of man as a species. Alternately, avoiding that, there is the outwardly less drastic but essentially equally alarming possibility of men becoming robots, while a third alternative has yet to be found. While it does appear as if a lot of young people, noticeably among students, have started reacting against the over mechanization of life, these reactions often tend to follow the swing-of-the-pendulum principle and veer towards the other extreme, throwing out the baby with the bathwater and falling prey to freak-out cults in a kind of mass-irrationalism, rejecting science and technology altogether. Artists who by their very nature perhaps are particularly sensitive - in a kind of seismographic way - to the currents and undercurrents of their age, have become aware of the effects of science and technology on our way of living, and many of them have in one way or another taken a stand in relation to the position of man in our highly technological world. Looking at the art produced over the last four decades, it is truly astonishing to what extent our changed world reflects in our art - a world and a Weltbild very different from that of our ancestors even just a few generations ago. The purpose of the present study is to survey some of the observations and commentaries that painters and certain kindred spirits from the sciences over the last few decades have offered, in the hope of, if not answering, at least defining and posing anew some of the questions that confront us with ever-increasing urgency.
- Full Text:
- Date Issued: 1986
The manipulated photographic images of Man Ray and Moholy-Nagy: "a deconstructural approach"
- Authors: Fry, Roger Bruce
- Date: 1986
- Subjects: Man Ray, 1890-1976 Moholy-Nagy, László, 1895-1946 Photography, Artistic
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2470 , http://hdl.handle.net/10962/d1009447
- Description: From introduction: In the following essay an emphasis has been placed on manipulated photographic images. Although this implies a whole variety of ways in which these images can be manipulated e.g. in collage, silkscreen etc., the emphasis here is on images that have a fabricated or deliberate manipulation of subject matter to make up the photograph.
- Full Text:
- Date Issued: 1986
- Authors: Fry, Roger Bruce
- Date: 1986
- Subjects: Man Ray, 1890-1976 Moholy-Nagy, László, 1895-1946 Photography, Artistic
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2470 , http://hdl.handle.net/10962/d1009447
- Description: From introduction: In the following essay an emphasis has been placed on manipulated photographic images. Although this implies a whole variety of ways in which these images can be manipulated e.g. in collage, silkscreen etc., the emphasis here is on images that have a fabricated or deliberate manipulation of subject matter to make up the photograph.
- Full Text:
- Date Issued: 1986
The role of the guidance teacher in preparing young people for personal and social life in Gazankulu
- Authors: Machimana, Albert
- Date: 1986
- Subjects: Counselling , Guidance , Life skills , Secondary education , Self concept , Gazankulu
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1381 , http://hdl.handle.net/10962/d1001447
- Description: In the modernising South African society, young people are faced with personal and social problems which make it very difficult for them to adjust positively to life in general. In the end they are frustrated in many situations in life because of their inability to cope with these problems. One of the major problems that the Blacks in South Africa are faced with is that of a poor self-concept. This is a major problem because any adjustment and behaviour in life is, to a large extent, influenced by the self-concept of the individual. This thesis aims at focusing attention on those social issues which play a major role in the development of the self-concept and the lives in general, of Black people in Gazankulu. It is also concerned with the role of the guidance teacher in preparing young people for a more satisfying life (Introduction, p. 1)
- Full Text:
- Date Issued: 1986
The role of the guidance teacher in preparing young people for personal and social life in Gazankulu
- Authors: Machimana, Albert
- Date: 1986
- Subjects: Counselling , Guidance , Life skills , Secondary education , Self concept , Gazankulu
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1381 , http://hdl.handle.net/10962/d1001447
- Description: In the modernising South African society, young people are faced with personal and social problems which make it very difficult for them to adjust positively to life in general. In the end they are frustrated in many situations in life because of their inability to cope with these problems. One of the major problems that the Blacks in South Africa are faced with is that of a poor self-concept. This is a major problem because any adjustment and behaviour in life is, to a large extent, influenced by the self-concept of the individual. This thesis aims at focusing attention on those social issues which play a major role in the development of the self-concept and the lives in general, of Black people in Gazankulu. It is also concerned with the role of the guidance teacher in preparing young people for a more satisfying life (Introduction, p. 1)
- Full Text:
- Date Issued: 1986
Theme in conversational discourse : problems experienced by speakers of Black South African English, with particular reference to the role of prosody in conversational synchrony
- Authors: Gennrich-de Lisle, Daniela
- Date: 1986
- Subjects: English language -- Spoken English -- Foreign speakers , Black English -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2370 , http://hdl.handle.net/10962/d1004512
- Description: This study is an investigation of instances of conversational failure in interaction as evidenced by speakers of Black South African English (BSAE) , with a particular focus on the role of prosody in conversational (a)synchrony. The data analysed consist of six conversations, one SAE-SAE (South African English) encounter, four BSAE- SAE encounters and one BSAE- BSAE encounter. After a theoretical framework is set up, the analysis is conducted by means of two triangulation research processes based on Ethnomethodology. The analysis consists of an investigation into selected extracts which participants and informants alike perceived as 'stressful'. An attempt is made to isolate the sources of each instance of pragmatic failure. Prosodic features are found to be important in establishing and maintaining theme and conversational synchrony. But other factors are also involved. The analysis reveals two major influences of asynchrony: deviance in the use of (in order of importance) prosodic, lexical and syntactic cues to discourse functions; and a mismatch in the application of socio-cultural principles guiding conversational behaviour. The study leads into a brief outline of aims, objectives and conversational competence at a tertiary level and concludes with suggestions for further research.
- Full Text:
- Date Issued: 1986
- Authors: Gennrich-de Lisle, Daniela
- Date: 1986
- Subjects: English language -- Spoken English -- Foreign speakers , Black English -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2370 , http://hdl.handle.net/10962/d1004512
- Description: This study is an investigation of instances of conversational failure in interaction as evidenced by speakers of Black South African English (BSAE) , with a particular focus on the role of prosody in conversational (a)synchrony. The data analysed consist of six conversations, one SAE-SAE (South African English) encounter, four BSAE- SAE encounters and one BSAE- BSAE encounter. After a theoretical framework is set up, the analysis is conducted by means of two triangulation research processes based on Ethnomethodology. The analysis consists of an investigation into selected extracts which participants and informants alike perceived as 'stressful'. An attempt is made to isolate the sources of each instance of pragmatic failure. Prosodic features are found to be important in establishing and maintaining theme and conversational synchrony. But other factors are also involved. The analysis reveals two major influences of asynchrony: deviance in the use of (in order of importance) prosodic, lexical and syntactic cues to discourse functions; and a mismatch in the application of socio-cultural principles guiding conversational behaviour. The study leads into a brief outline of aims, objectives and conversational competence at a tertiary level and concludes with suggestions for further research.
- Full Text:
- Date Issued: 1986
Traditional and modern law of procedure and evidence in the chief's courts of the Ciskei
- Authors: Mqeke, Bangilizwe Richman
- Date: 1986
- Subjects: Customary law -- South Africa , Customary law -- South Africa -- Ciskei , Evidence (Law) -- South Africa , Procedure (Law) -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3687 , http://hdl.handle.net/10962/d1003202 , Customary law -- South Africa , Customary law -- South Africa -- Ciskei , Evidence (Law) -- South Africa , Procedure (Law) -- South Africa
- Description: In this thesis it is intended to show, among other things, the evolution of the Ciskeian traditional African Court practice and procedure from the time of the advent of white rule up to the present day. In chapter two we show the manner in which the various Cape Governors tried to suppress the traditional court system and law by superimposing western type law and norms (repugnancy clause) on the unwilling African population. The case law discussed in chapter 3 clearly shows the problems that arose and which to a large extent, still arise in the application of the Chiefs' Civil Courts Rules. Non-compliance with these rules reveals the need both for the training of the personnel of these courts and reform of the rules governing the Chief's courts. The areas that need urgent attention have been identified and the necessary recommendations have been made.
- Full Text:
- Date Issued: 1986
- Authors: Mqeke, Bangilizwe Richman
- Date: 1986
- Subjects: Customary law -- South Africa , Customary law -- South Africa -- Ciskei , Evidence (Law) -- South Africa , Procedure (Law) -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:3687 , http://hdl.handle.net/10962/d1003202 , Customary law -- South Africa , Customary law -- South Africa -- Ciskei , Evidence (Law) -- South Africa , Procedure (Law) -- South Africa
- Description: In this thesis it is intended to show, among other things, the evolution of the Ciskeian traditional African Court practice and procedure from the time of the advent of white rule up to the present day. In chapter two we show the manner in which the various Cape Governors tried to suppress the traditional court system and law by superimposing western type law and norms (repugnancy clause) on the unwilling African population. The case law discussed in chapter 3 clearly shows the problems that arose and which to a large extent, still arise in the application of the Chiefs' Civil Courts Rules. Non-compliance with these rules reveals the need both for the training of the personnel of these courts and reform of the rules governing the Chief's courts. The areas that need urgent attention have been identified and the necessary recommendations have been made.
- Full Text:
- Date Issued: 1986
Vein and replacement type Sn and Sn-W mineralization in the Southern Kaoko Zone, Damara Province, South West Africa/Namibia
- Authors: Petzel, V
- Date: 1986
- Subjects: Geology, Structural -- Namibia -- Damara Mobile Belt , Geology, Structural -- Namibia -- Kaoko Belt , Veins (Geology) -- Namibia -- Damara Mobile Belt , Veins (Geology) -- Namibia -- Kaoko Belt , Mineralogy -- Namibia -- Damara Mobile Belt , Mineralogy -- Namibia -- Kaoko Belt , Geodynamics -- Namibia -- Damara Mobile Belt , Geodynamics -- Namibia -- Kaoko Belt
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5041 , http://hdl.handle.net/10962/d1007633
- Description: The ENE trending Brandberg West - Goantagab Sn-W belt is located in the Southern Kaoko Zone of the northern coastal branch of the Damara Orogen. The lithologies in this area are turbiditic and consist of three schist units separated by two marble horizons, all of which are correlated with the Swakop Group. The formations are intensely folded by at least three episodes of which the first two are coaxial and resulted in prominent, approximately N-S trending, structures. Sn and Sn-W mineralization predominantly occurs as vein and replacement type mineralization. Vein type mineralization occurs as Brandberg West, Frans Prospect, Gamigab Prospect and the Goantagab Mining Area. The vein type mineralization is accompanied by intense alteration, consisting of greisenization, sericitization, hematitization and carbonatization. Replacement-type, hematite-cassiterite mineralization, occurs in the Goantagab Mining area in the marble close to, or at the schist marble contact. Intense ferruginous alteration of the marbles in this area, is associated with veins, which terminate against, or cross cut the marble. A regional metal zonation, ranging from Sn-W mineralization with minor sulphides at Brandberg West to Sn-sulphide mineralization at Goantagab can be detected. This metal zonation is attributed to the distance of the mineral locality from the source area, with Goantagab representing a distal and Brandberg West a proximal position relative to the source area. Structural, mineralogical and geological features of the mineralization in this area suggest that processes of ore genesis may be related to anorogenic magmatism of Karoo age.
- Full Text:
- Date Issued: 1986
- Authors: Petzel, V
- Date: 1986
- Subjects: Geology, Structural -- Namibia -- Damara Mobile Belt , Geology, Structural -- Namibia -- Kaoko Belt , Veins (Geology) -- Namibia -- Damara Mobile Belt , Veins (Geology) -- Namibia -- Kaoko Belt , Mineralogy -- Namibia -- Damara Mobile Belt , Mineralogy -- Namibia -- Kaoko Belt , Geodynamics -- Namibia -- Damara Mobile Belt , Geodynamics -- Namibia -- Kaoko Belt
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5041 , http://hdl.handle.net/10962/d1007633
- Description: The ENE trending Brandberg West - Goantagab Sn-W belt is located in the Southern Kaoko Zone of the northern coastal branch of the Damara Orogen. The lithologies in this area are turbiditic and consist of three schist units separated by two marble horizons, all of which are correlated with the Swakop Group. The formations are intensely folded by at least three episodes of which the first two are coaxial and resulted in prominent, approximately N-S trending, structures. Sn and Sn-W mineralization predominantly occurs as vein and replacement type mineralization. Vein type mineralization occurs as Brandberg West, Frans Prospect, Gamigab Prospect and the Goantagab Mining Area. The vein type mineralization is accompanied by intense alteration, consisting of greisenization, sericitization, hematitization and carbonatization. Replacement-type, hematite-cassiterite mineralization, occurs in the Goantagab Mining area in the marble close to, or at the schist marble contact. Intense ferruginous alteration of the marbles in this area, is associated with veins, which terminate against, or cross cut the marble. A regional metal zonation, ranging from Sn-W mineralization with minor sulphides at Brandberg West to Sn-sulphide mineralization at Goantagab can be detected. This metal zonation is attributed to the distance of the mineral locality from the source area, with Goantagab representing a distal and Brandberg West a proximal position relative to the source area. Structural, mineralogical and geological features of the mineralization in this area suggest that processes of ore genesis may be related to anorogenic magmatism of Karoo age.
- Full Text:
- Date Issued: 1986
Western influences on the Zulu system of personal naming
- Authors: Dickens, Sybil Maureen
- Date: 1986
- Subjects: Zulu language -- Etymology -- Names , Names, Personal -- Zulu , Names, Zulu
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2378 , http://hdl.handle.net/10962/d1007158 , Zulu language -- Etymology -- Names , Names, Personal -- Zulu , Names, Zulu
- Full Text:
- Date Issued: 1986
- Authors: Dickens, Sybil Maureen
- Date: 1986
- Subjects: Zulu language -- Etymology -- Names , Names, Personal -- Zulu , Names, Zulu
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2378 , http://hdl.handle.net/10962/d1007158 , Zulu language -- Etymology -- Names , Names, Personal -- Zulu , Names, Zulu
- Full Text:
- Date Issued: 1986
Xhosa narrative : an analysis of the production and linguistic properties of discourse with particular reference to "iintsomi" texts
- Authors: Gough, David Huw
- Date: 1986
- Subjects: Folk literature, Xhosa Xhosa language -- Spoken Xhosa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3564 , http://hdl.handle.net/10962/d1002086
- Description: Although the areas I intend to investigate are rather diverse, what unites them is a concern for the ancient and fascinating question of the relationship between language and thought. Assumptions concerning the latter are surely latent as the basis for any inquiry into language. One of my general purposes is to give some overt orientation to this problem which is all too often simply glossed over. More particularly, I am also concerned with shaping a new approach to Bantu linguistic inquiry in terms of an emphasis on discourse analysis. In the context of the burgeoning of discourse analysis internationally, the field has been seriously neglected in Southern Africa. Studies of discourse are, we believe, vital to advancing our knowledge of inter-ethnic communication and understanding, an area that cannot be ignored in Southern Africa. In more general terms, I hope that this thesis represents a challenge to linguistic inquiry in ways that we have already outlined above. Most importantly, is that while it appears that most South African linguists are satisfied with adopting a rigid monotheoretical approach, I differ, advocating a multitheoretical perspective. This, I believe, allows a greater and more holistic view not only of the 'data' in question but also in terms of the general nature of inquiry, as well as the 'world' it attempts to describe. The body of this thesis is divided into two sections which reflect the two central concerns we have outlined above. Section A, divided into three chapters, is chiefly concerned with the conceptual basis of Xhosa narrative and its linguistic manifestation. In this section we shall find cause to query and to redefine traditional approaches to the linguistic categories manifest in Xhosa narrative. In section B, also divided into three chapters, we shall be concerned with the development of a theory of narrative production with specific reference to intsomi production. In this section we include an in depth criticism of previous approaches to this problem before developing and applying our own theory. There are two appendices attached to this thesis. The first presents certain tables and figures relevant to chapter 4. while the second includes the narrative texts from which we draw our examples. (Introduction, p. 21-22)
- Full Text:
- Date Issued: 1986
- Authors: Gough, David Huw
- Date: 1986
- Subjects: Folk literature, Xhosa Xhosa language -- Spoken Xhosa
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:3564 , http://hdl.handle.net/10962/d1002086
- Description: Although the areas I intend to investigate are rather diverse, what unites them is a concern for the ancient and fascinating question of the relationship between language and thought. Assumptions concerning the latter are surely latent as the basis for any inquiry into language. One of my general purposes is to give some overt orientation to this problem which is all too often simply glossed over. More particularly, I am also concerned with shaping a new approach to Bantu linguistic inquiry in terms of an emphasis on discourse analysis. In the context of the burgeoning of discourse analysis internationally, the field has been seriously neglected in Southern Africa. Studies of discourse are, we believe, vital to advancing our knowledge of inter-ethnic communication and understanding, an area that cannot be ignored in Southern Africa. In more general terms, I hope that this thesis represents a challenge to linguistic inquiry in ways that we have already outlined above. Most importantly, is that while it appears that most South African linguists are satisfied with adopting a rigid monotheoretical approach, I differ, advocating a multitheoretical perspective. This, I believe, allows a greater and more holistic view not only of the 'data' in question but also in terms of the general nature of inquiry, as well as the 'world' it attempts to describe. The body of this thesis is divided into two sections which reflect the two central concerns we have outlined above. Section A, divided into three chapters, is chiefly concerned with the conceptual basis of Xhosa narrative and its linguistic manifestation. In this section we shall find cause to query and to redefine traditional approaches to the linguistic categories manifest in Xhosa narrative. In section B, also divided into three chapters, we shall be concerned with the development of a theory of narrative production with specific reference to intsomi production. In this section we include an in depth criticism of previous approaches to this problem before developing and applying our own theory. There are two appendices attached to this thesis. The first presents certain tables and figures relevant to chapter 4. while the second includes the narrative texts from which we draw our examples. (Introduction, p. 21-22)
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- Date Issued: 1986