A history of the Xhosa, c1700-1835
- Authors: Peires, J B (Jeffrey B)
- Date: 1977
- Subjects: Xhosa (African people) -- History
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2611 , http://hdl.handle.net/10962/d1013024
- Description: The boundaries of the territory occupied by the Xhosa fluctuated considerably, but in the period 1700-1835 they did not often extend west of the Sundays River, or east of the Mbashe River, along the coastal strip which separates the escarpment of South Africa's inland plateau from the Indian Ocean. It is an area of temperate grassland, permitting the cultivation of cereals and light crops, such as maize, millet, tobacco and pumpkins but better suited to stock-farming than intensive agriculture.
- Full Text:
- Date Issued: 1977
- Authors: Peires, J B (Jeffrey B)
- Date: 1977
- Subjects: Xhosa (African people) -- History
- Language: English
- Type: text , Thesis , Masters , MA
- Identifier: vital:2611 , http://hdl.handle.net/10962/d1013024
- Description: The boundaries of the territory occupied by the Xhosa fluctuated considerably, but in the period 1700-1835 they did not often extend west of the Sundays River, or east of the Mbashe River, along the coastal strip which separates the escarpment of South Africa's inland plateau from the Indian Ocean. It is an area of temperate grassland, permitting the cultivation of cereals and light crops, such as maize, millet, tobacco and pumpkins but better suited to stock-farming than intensive agriculture.
- Full Text:
- Date Issued: 1977
A study of the distribution of nutrients during the growth of cayenne pineapples under field conditions
- Authors: Fowler, William Mackenzie
- Date: 1977
- Subjects: Plants -- Nutrition , Pineapple -- Crop yields , Growth (Plants) , Field Crops -- Nutrition
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4260 , http://hdl.handle.net/10962/d1011888 , Plants -- Nutrition , Pineapple -- Crop yields , Growth (Plants) , Field Crops -- Nutrition
- Description: The purpose of this study was to determine the uptake and distribution of nutrients during the growth of the Cayenne cultivar of Ananas comosus (L) Merr under field conditions in the Eastern Cape. The study was also done to help explain the apparent drop in the nutrient levels in the basal section of the "D"- leaf of the pineapple plant during the winter months and to determine the best part or parts of the plant to sample in order to measure the nutrient status of the pineapple plant at any stage of its growth. The investigation was conducted by selecting a plot within a production land on two farms in the pineapple growing region of the Eastern Cape. Plants were sampled from each plot at regular intervals from planting of the pineapple tops until the harvesting of the fruit of the first plant crop. Plant growth was measured and the nutrient concentrations in each section of the plant were determined. The total amounts of nutrients for each plant part were calculated and the nutrient uptake was compared and plotted on distribution diagrams.
- Full Text:
- Date Issued: 1977
- Authors: Fowler, William Mackenzie
- Date: 1977
- Subjects: Plants -- Nutrition , Pineapple -- Crop yields , Growth (Plants) , Field Crops -- Nutrition
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4260 , http://hdl.handle.net/10962/d1011888 , Plants -- Nutrition , Pineapple -- Crop yields , Growth (Plants) , Field Crops -- Nutrition
- Description: The purpose of this study was to determine the uptake and distribution of nutrients during the growth of the Cayenne cultivar of Ananas comosus (L) Merr under field conditions in the Eastern Cape. The study was also done to help explain the apparent drop in the nutrient levels in the basal section of the "D"- leaf of the pineapple plant during the winter months and to determine the best part or parts of the plant to sample in order to measure the nutrient status of the pineapple plant at any stage of its growth. The investigation was conducted by selecting a plot within a production land on two farms in the pineapple growing region of the Eastern Cape. Plants were sampled from each plot at regular intervals from planting of the pineapple tops until the harvesting of the fruit of the first plant crop. Plant growth was measured and the nutrient concentrations in each section of the plant were determined. The total amounts of nutrients for each plant part were calculated and the nutrient uptake was compared and plotted on distribution diagrams.
- Full Text:
- Date Issued: 1977
A study of the rabbit eye test system to determine the activity of acidic non-steroidal anti-inflammatory agents
- Authors: Wiseman, Ian Charles
- Date: 1977
- Subjects: Nonsteroidal anti-inflammatory agents , Anti-inflammatory agents
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3855 , http://hdl.handle.net/10962/d1013276
- Description: From introduction : "Inflammation per se, has been defined sufficiently to permit a rational approach to the search for drugs that modify this process, but satisfactory animal models for most rheumatoid diseases are not available". (Swingle 1974) In the search for new meaningful procedures for the detection and evaluation of anti-inflammatory drugs, the rabbit eye as a test system was studied.
- Full Text:
- Date Issued: 1977
- Authors: Wiseman, Ian Charles
- Date: 1977
- Subjects: Nonsteroidal anti-inflammatory agents , Anti-inflammatory agents
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3855 , http://hdl.handle.net/10962/d1013276
- Description: From introduction : "Inflammation per se, has been defined sufficiently to permit a rational approach to the search for drugs that modify this process, but satisfactory animal models for most rheumatoid diseases are not available". (Swingle 1974) In the search for new meaningful procedures for the detection and evaluation of anti-inflammatory drugs, the rabbit eye as a test system was studied.
- Full Text:
- Date Issued: 1977
African art and myth
- Authors: Till, C M
- Date: 1977
- Subjects: Art, African , Art and mythology , Mythology, African
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2494 , http://hdl.handle.net/10962/d1013306
- Full Text:
- Date Issued: 1977
- Authors: Till, C M
- Date: 1977
- Subjects: Art, African , Art and mythology , Mythology, African
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2494 , http://hdl.handle.net/10962/d1013306
- Full Text:
- Date Issued: 1977
An ideographic study of bisexuality
- Authors: Parker, Peter Burns
- Date: 1977
- Subjects: Bisexuality -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3036 , http://hdl.handle.net/10962/d1002545 , Bisexuality -- Psychological aspects
- Description: This research can be seen as being a step towards an answer to the question "what is bisexuality?". Such an aim, however, appears to be a contradiction in terms. Surely we must be assuming an answer by asking the question. How can one ask a question such as “what is bisexuality?", if we have no conception of what the word bisexuality means? Owing to the lack of information in the literature with which to answer the question of this study, it was decided that an in-depth study of one individual would be a most suitable starting point to begin an illumination of the themes which lie in the depths of this complex phenomenon . An in-depth study would hopefully do this without lapsing into the stereo - typed ways of thinking and terminology that could eventuate from a more populous and necessarily more superficial approach (Kotze 1974). Arising out of the prevailing conception of human sexuality as comprising two modes of sexual existence - heterosexuality and homosexuality only, the idea of bisexuality is hardly to be found in the ordinary man's or, for that matter, the psychologist 's, conceptual frameworks. The only extensive work that has been undertaken to date which uncovers, to a certain extent, the nature of human sexuality, is that of Kingsley (1948 and 1953). Although it must be kept in mind that this research is dated, it certainly does indicate that perhaps it would not be unrealistic to begin to reconceptualise our views on man's sexual mode of existence . This thesis presents the case of a man, who, according to our present view, does not exist.
- Full Text:
- Date Issued: 1977
- Authors: Parker, Peter Burns
- Date: 1977
- Subjects: Bisexuality -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3036 , http://hdl.handle.net/10962/d1002545 , Bisexuality -- Psychological aspects
- Description: This research can be seen as being a step towards an answer to the question "what is bisexuality?". Such an aim, however, appears to be a contradiction in terms. Surely we must be assuming an answer by asking the question. How can one ask a question such as “what is bisexuality?", if we have no conception of what the word bisexuality means? Owing to the lack of information in the literature with which to answer the question of this study, it was decided that an in-depth study of one individual would be a most suitable starting point to begin an illumination of the themes which lie in the depths of this complex phenomenon . An in-depth study would hopefully do this without lapsing into the stereo - typed ways of thinking and terminology that could eventuate from a more populous and necessarily more superficial approach (Kotze 1974). Arising out of the prevailing conception of human sexuality as comprising two modes of sexual existence - heterosexuality and homosexuality only, the idea of bisexuality is hardly to be found in the ordinary man's or, for that matter, the psychologist 's, conceptual frameworks. The only extensive work that has been undertaken to date which uncovers, to a certain extent, the nature of human sexuality, is that of Kingsley (1948 and 1953). Although it must be kept in mind that this research is dated, it certainly does indicate that perhaps it would not be unrealistic to begin to reconceptualise our views on man's sexual mode of existence . This thesis presents the case of a man, who, according to our present view, does not exist.
- Full Text:
- Date Issued: 1977
An investigation of plant-derived cardiac glycosides as a possible basis for aposematism in the aphidophagous hoverfly Ischiodon aegryptius (Wiedemann) (Diptera: Syrphidae)
- Authors: Malcolm, Stephen Baillie
- Date: 1977
- Subjects: Diptera , Syrphidae , Aphidophagous insects , Predatory animals , Insect-plant relationships , Insect pests -- Biological control , Insects as carriers of disease
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5864 , http://hdl.handle.net/10962/d1012798 , Diptera , Syrphidae , Aphidophagous insects , Predatory animals , Insect-plant relationships , Insect pests -- Biological control , Insects as carriers of disease
- Description: The chemical defences of insects against predators are either passive or aggressive. Passive defence is achieved through crypsis, and aggressive defence is maintained by a conspicuous or 'aposematic' (Poulton, 1890) appearance that advertises some noxious quality of the insect harmful to a predator. Aposematism is mutually beneficial to both the bearer and its predator, whereas crypsis only benefits the prey species. It is therefore not surprising that the fascinating array of chemical defences in insects is both diverse and widespread (Roth and Eisner, 1962). Intro. p. 1.
- Full Text:
- Date Issued: 1977
- Authors: Malcolm, Stephen Baillie
- Date: 1977
- Subjects: Diptera , Syrphidae , Aphidophagous insects , Predatory animals , Insect-plant relationships , Insect pests -- Biological control , Insects as carriers of disease
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5864 , http://hdl.handle.net/10962/d1012798 , Diptera , Syrphidae , Aphidophagous insects , Predatory animals , Insect-plant relationships , Insect pests -- Biological control , Insects as carriers of disease
- Description: The chemical defences of insects against predators are either passive or aggressive. Passive defence is achieved through crypsis, and aggressive defence is maintained by a conspicuous or 'aposematic' (Poulton, 1890) appearance that advertises some noxious quality of the insect harmful to a predator. Aposematism is mutually beneficial to both the bearer and its predator, whereas crypsis only benefits the prey species. It is therefore not surprising that the fascinating array of chemical defences in insects is both diverse and widespread (Roth and Eisner, 1962). Intro. p. 1.
- Full Text:
- Date Issued: 1977
Art and power : an investigation into the effect politics, the church and economics have had on the content of a work of art and the development of art in general
- Authors: Heydenrych, Albert B
- Date: 1977
- Subjects: Art and religion , Politics in art , Art and industry , Art and state
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2499 , http://hdl.handle.net/10962/d1013390
- Full Text:
- Date Issued: 1977
- Authors: Heydenrych, Albert B
- Date: 1977
- Subjects: Art and religion , Politics in art , Art and industry , Art and state
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2499 , http://hdl.handle.net/10962/d1013390
- Full Text:
- Date Issued: 1977
Aspects of imagery, syntax and metrics in the poetry of George Herbert
- Authors: Edgecombe, Rodney Stenning
- Date: 1977
- Subjects: Herbert, George, 1593-1633 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2294 , http://hdl.handle.net/10962/d1011613 , Herbert, George, 1593-1633 -- Criticism and interpretation
- Description: I intend In this thesis to examine some central features of George Herbert's art - aspects of his imagery syntax and metrics. These topics have been chosen because they encompass large areas of his poetic practice, ramifying as they do into questions of theme, tone and structure. Even a partial. survey of Herbert' s imagery, such as the one I attempt to offer, should enable the reader to judge the range of experience that Herbert brings to bear upon a comparatively circumscribed number of themes, (The "Affliction " poems, for example, are wonderfully diverse, although they have a common thematic centre). A brief examination of the traditions within which Herbert's manipulation of imagery falls should allow one also to judge his resourcefulness, especially in the composites of emblem and symbol he devises on occasion; which in the concluding analyses I attempt to show the structural significance of image patterns in representative poems from The Temple. Thus Chapter I falls into three sections: a brief discussion of emblematic and symbolic traditions together with Herbert 's place in relation to them, a deliberately selective glance over some images (a full examination is far beyond the scope of this thesis), and finally some close analyses of poems in the course of which I try to show the imagery operating as a structural and coordinating device. In Chapter II, I move on to the closely related area of syntax, examining Herbert's formulation of his material, and finding - amongst other things - that there is evidence of "grammatical" imagery where the disposition of a sentence provides a concrete embodiment of the theme. This interrelationship of imagery and syntax (and of imagery and metrics) is a corollory of poetry's organic nature, and in order to stress the mutual collaboration of these features, I have subjected a single poem, "The Flower" to an analysis from three different angles, assuming that each approach will further illuminate the others. All the lyrics would yield riches if treated in this way but my limits of space have naturally precluded so elaborate an undertaking. Even In the analyses of poems that are treated only once, I have been at pains to allow in a glimmering of topics other than that in hand, so as to enlarge the scope of my examination. Although the material in Chapter II is designed to highlight the structural, tonal and thematic effects of syntax in turn, such divisions remain theoretical rather than actual, for they combine almost indivorcibly into a complex whole. Chapter III is patterned like Chapter I in that it moves from a general survey of Herbert's metrics, his rhyme and his stanzaic design, to further close analyses of his metrical procedures in particular lyrics. Both here and in the preceding chapters I have undertaken to look at Herbert's work in close detail, because, as I have already suggested, his is an art of compression, of telescoping a whole range of meanings into the neatest and most compact shape. Given the differences in mode and intention, his poetry often puts one in mind of Jane Austen's fiction - at least in the profundity it achieves within a consciously limited scale and a critical magnifying glass seems to me to be the most apposite aid for such a study as I have undertaken.
- Full Text:
- Date Issued: 1977
- Authors: Edgecombe, Rodney Stenning
- Date: 1977
- Subjects: Herbert, George, 1593-1633 -- Criticism and interpretation
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2294 , http://hdl.handle.net/10962/d1011613 , Herbert, George, 1593-1633 -- Criticism and interpretation
- Description: I intend In this thesis to examine some central features of George Herbert's art - aspects of his imagery syntax and metrics. These topics have been chosen because they encompass large areas of his poetic practice, ramifying as they do into questions of theme, tone and structure. Even a partial. survey of Herbert' s imagery, such as the one I attempt to offer, should enable the reader to judge the range of experience that Herbert brings to bear upon a comparatively circumscribed number of themes, (The "Affliction " poems, for example, are wonderfully diverse, although they have a common thematic centre). A brief examination of the traditions within which Herbert's manipulation of imagery falls should allow one also to judge his resourcefulness, especially in the composites of emblem and symbol he devises on occasion; which in the concluding analyses I attempt to show the structural significance of image patterns in representative poems from The Temple. Thus Chapter I falls into three sections: a brief discussion of emblematic and symbolic traditions together with Herbert 's place in relation to them, a deliberately selective glance over some images (a full examination is far beyond the scope of this thesis), and finally some close analyses of poems in the course of which I try to show the imagery operating as a structural and coordinating device. In Chapter II, I move on to the closely related area of syntax, examining Herbert's formulation of his material, and finding - amongst other things - that there is evidence of "grammatical" imagery where the disposition of a sentence provides a concrete embodiment of the theme. This interrelationship of imagery and syntax (and of imagery and metrics) is a corollory of poetry's organic nature, and in order to stress the mutual collaboration of these features, I have subjected a single poem, "The Flower" to an analysis from three different angles, assuming that each approach will further illuminate the others. All the lyrics would yield riches if treated in this way but my limits of space have naturally precluded so elaborate an undertaking. Even In the analyses of poems that are treated only once, I have been at pains to allow in a glimmering of topics other than that in hand, so as to enlarge the scope of my examination. Although the material in Chapter II is designed to highlight the structural, tonal and thematic effects of syntax in turn, such divisions remain theoretical rather than actual, for they combine almost indivorcibly into a complex whole. Chapter III is patterned like Chapter I in that it moves from a general survey of Herbert's metrics, his rhyme and his stanzaic design, to further close analyses of his metrical procedures in particular lyrics. Both here and in the preceding chapters I have undertaken to look at Herbert's work in close detail, because, as I have already suggested, his is an art of compression, of telescoping a whole range of meanings into the neatest and most compact shape. Given the differences in mode and intention, his poetry often puts one in mind of Jane Austen's fiction - at least in the profundity it achieves within a consciously limited scale and a critical magnifying glass seems to me to be the most apposite aid for such a study as I have undertaken.
- Full Text:
- Date Issued: 1977
Categories of experience amongst the Xhosa : a psychological study
- Authors: Schweitzer, Robert David
- Date: 1977
- Subjects: Xhosa (African people) -- Psychology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3237 , http://hdl.handle.net/10962/d1013172
- Description: Transcultural studies of psychological states may be seen as falling within two schools, one adopting a position in which universal criteria of "mental health" are assumed, the other a cultural relativist position in which phenomena are understood in terms of the context in which they occur. The present study, in adopting the latter position, examines categories of experience amongst the Xhosa in terms of their meaning within Xhosa cosmology. The thoughts and practices of a Xhosa Iqgira (diviner) were extensively examined using an idiographic approach. This was corroborated by in-depth interviews with his consultees who were undergoing the categories being studied. Three categories, thwasa, phambana and amafufunyana are explicated. Thwasa is seen to be related to the individual- shade communion. Phambana is predominantly related to custom and witchcraft. Amafufunyana is related to disharmonious interpersonal situations within the community. The universalist position, derived from descriptive psychiatry, has often viewed the mental status of amaqgira {diviners) as neurotic or even psychotic. This finding is not supported in the present study. The implications of the research for community mental health in Southern Africa are discussed.
- Full Text:
- Date Issued: 1977
- Authors: Schweitzer, Robert David
- Date: 1977
- Subjects: Xhosa (African people) -- Psychology
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3237 , http://hdl.handle.net/10962/d1013172
- Description: Transcultural studies of psychological states may be seen as falling within two schools, one adopting a position in which universal criteria of "mental health" are assumed, the other a cultural relativist position in which phenomena are understood in terms of the context in which they occur. The present study, in adopting the latter position, examines categories of experience amongst the Xhosa in terms of their meaning within Xhosa cosmology. The thoughts and practices of a Xhosa Iqgira (diviner) were extensively examined using an idiographic approach. This was corroborated by in-depth interviews with his consultees who were undergoing the categories being studied. Three categories, thwasa, phambana and amafufunyana are explicated. Thwasa is seen to be related to the individual- shade communion. Phambana is predominantly related to custom and witchcraft. Amafufunyana is related to disharmonious interpersonal situations within the community. The universalist position, derived from descriptive psychiatry, has often viewed the mental status of amaqgira {diviners) as neurotic or even psychotic. This finding is not supported in the present study. The implications of the research for community mental health in Southern Africa are discussed.
- Full Text:
- Date Issued: 1977
Death and transcendence in northern European art
- Authors: Pratt, S R
- Date: 1977
- Subjects: Death in art , Art -- Europe, Northern
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2505 , http://hdl.handle.net/10962/d1015230
- Description: [From Introduction]. Time has revealed two distinct tendencies in the history of thought and art in Europe. That development in European culture which began in Ancient Greece is marked by a positive confidence in the relationship of man to his world. Parallel with but in opposition to this development is a separate progression in culture. The continuity of art in Northern Europe appears to be associated with the adherence of Northern man to a negative, fatalistic sense of being - to a spirit which is in conflict with a hostile violent environment. The purposo of this investigation is to determine, through art the nature of this sense of being in Northern Europe. No direct definition would be capable of conveying the fullest meaning of that spirit. lt is a feeling. To understand this morbid fatalism, it is therefore necessary to refer to the pre-Christian religion of the Germanic Barbarians - through which the Northern spirit manifested itself in the form of ragnarök. Ragnarök which can be translated as a moaning obscurity, shadows, twilight, fateful destiny, was a term used by Nordic bards in its broadest sense to describe the end of the world - the inevitable destruction of life.
- Full Text:
- Date Issued: 1977
- Authors: Pratt, S R
- Date: 1977
- Subjects: Death in art , Art -- Europe, Northern
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2505 , http://hdl.handle.net/10962/d1015230
- Description: [From Introduction]. Time has revealed two distinct tendencies in the history of thought and art in Europe. That development in European culture which began in Ancient Greece is marked by a positive confidence in the relationship of man to his world. Parallel with but in opposition to this development is a separate progression in culture. The continuity of art in Northern Europe appears to be associated with the adherence of Northern man to a negative, fatalistic sense of being - to a spirit which is in conflict with a hostile violent environment. The purposo of this investigation is to determine, through art the nature of this sense of being in Northern Europe. No direct definition would be capable of conveying the fullest meaning of that spirit. lt is a feeling. To understand this morbid fatalism, it is therefore necessary to refer to the pre-Christian religion of the Germanic Barbarians - through which the Northern spirit manifested itself in the form of ragnarök. Ragnarök which can be translated as a moaning obscurity, shadows, twilight, fateful destiny, was a term used by Nordic bards in its broadest sense to describe the end of the world - the inevitable destruction of life.
- Full Text:
- Date Issued: 1977
Die psigopaat as kliënt in die Maatskaplike Werk
- Authors: Venter, Pieter Viviers
- Date: 1977
- Language: Afrikaans
- Type: Thesis , Masters , MSocSc
- Identifier: vital:21106 , http://hdl.handle.net/10962/6410
- Full Text:
- Date Issued: 1977
- Authors: Venter, Pieter Viviers
- Date: 1977
- Language: Afrikaans
- Type: Thesis , Masters , MSocSc
- Identifier: vital:21106 , http://hdl.handle.net/10962/6410
- Full Text:
- Date Issued: 1977
Explanation of the geological map of the country east of Kariba
- Authors: Broderick, T J
- Date: 1977
- Subjects: Geology -- Kariba, Lake (Zambia and Zimbabwe) -- Maps , Geology -- Kariba, Lake (Zambia and Zimbabwe)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5075 , http://hdl.handle.net/10962/d1014650
- Description: The area covers part of the western end of the Zambezi Metamorphic Belt as it is known in Rhodesia. Most of the rocks are paragneisses of various ages that have suffered a long and complex history which has taken them into the highest facies of metamorphism and into the realm of granitization. Only the Karoo sediments of the Zambezi Valley are unaffected by these metamorphic events. From the scanty geochronological results obtainable from the north of Rhodesia, the history of this area started more than 2 500 million years ago. In the east and south-east of the mapped area are a group of highly migmatized granitic gneisses which represent a continuation westwards of similar rocks found in the area described in Bulletin 51 by Wiles (1961}. These Urungwe Paragneisses are regarded as forrning the basement on which all other rocks in the area lie, although their relationship with the Basement Complex is unknown. Climatically Kariba is hot and humid. Mean summer temperatures average 30°C (86°F), with temperatures in October that often exceed 40°C (100°F). Away from the Lake the humidity decreases and the increased altitudes above the Escarpment have a cooling effect. The township's mean annual rainfall is 665 millimetres (26,2 inches), most of which falls in the months between November and February. Basically. the area is well timbered but population pressures in the tribal areas, and depredation by elephants elsewhere, have made serious inroads upon the natural vegetation. The gneissic terrain above the Escarpment is characterized by mufuti trees (Brachystegia boehmiz). The baobab (Adansonia digitata) is common in the larger river valleys and in the low-lying area surrounding the lake shore where it occurs together with mopane (Colophospermum mopane) and thick jessie bush. In the river valleys, trees typical of the Zambezi Valley are common and include the tamarind (Tamarindus indica), mumvey (Kigelia africana) and Steculia species. Buffalo beans (Mucuma coriacea) are not uncommon in grassy river-beds. Physiographically, the area can be subdivided into three distinct regions, all of which have a marked geological control. They are- (1) The fault-lined Gwembe trough which has subsequently been inundated by the waters of Lake Kariba to an average altitude of 487 metres (1 600 feet) above sea level since the completion of the dam across the upstream entrance to the Kariba Gorge in 1960. The fiat land that now forms part of the lake shore is underlain by sediments of Karoo age and these, in the mapped area, occupy the Charara and Gachegache Basins, that lie to the north and south respectively of the Msango Range. These fiat-lying areas give way sharply to the gneissic terrain of the Zambezi Metamorphic Belt along the fault-lined Zambezi Escarpment. (2) The northern boundary of the area and the Msango Range are underlain by metasediments of the Makuti Group. The relief is strongly influenced by the regional geological structure of these complexly folded rocks with resistant meta-arkose and quartzite forming the sharp ridges and metapelites occupying the valleys. The ridges and valleys trend eastwards in the Msango Range, but along the northern boundary they trend north-westwards. (3) The linear topographic features of the Makuti Group terrain give way southwards to the older gneisses along an abrupt scarp edge, the base of which is marked by the Tsororo River. This terrain of gneisses is very rugged and highly dissected above the Zambezi Escarpment until it flattens out, at about 900 metres (2 950 feet) above sea level, into the Urungwe Tribal Trust Lands. In the rugged country above the Escarpment, granulites of the Piriwiri Group stand out above the gneisses as steep-sided conical bills. The country rises in a series of fault-lined steps to its highest point, at Nyamangwe trigonometrical beacon, which stands at 1 336 metres (4 382 feet) above sea level.
- Full Text:
- Date Issued: 1977
- Authors: Broderick, T J
- Date: 1977
- Subjects: Geology -- Kariba, Lake (Zambia and Zimbabwe) -- Maps , Geology -- Kariba, Lake (Zambia and Zimbabwe)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5075 , http://hdl.handle.net/10962/d1014650
- Description: The area covers part of the western end of the Zambezi Metamorphic Belt as it is known in Rhodesia. Most of the rocks are paragneisses of various ages that have suffered a long and complex history which has taken them into the highest facies of metamorphism and into the realm of granitization. Only the Karoo sediments of the Zambezi Valley are unaffected by these metamorphic events. From the scanty geochronological results obtainable from the north of Rhodesia, the history of this area started more than 2 500 million years ago. In the east and south-east of the mapped area are a group of highly migmatized granitic gneisses which represent a continuation westwards of similar rocks found in the area described in Bulletin 51 by Wiles (1961}. These Urungwe Paragneisses are regarded as forrning the basement on which all other rocks in the area lie, although their relationship with the Basement Complex is unknown. Climatically Kariba is hot and humid. Mean summer temperatures average 30°C (86°F), with temperatures in October that often exceed 40°C (100°F). Away from the Lake the humidity decreases and the increased altitudes above the Escarpment have a cooling effect. The township's mean annual rainfall is 665 millimetres (26,2 inches), most of which falls in the months between November and February. Basically. the area is well timbered but population pressures in the tribal areas, and depredation by elephants elsewhere, have made serious inroads upon the natural vegetation. The gneissic terrain above the Escarpment is characterized by mufuti trees (Brachystegia boehmiz). The baobab (Adansonia digitata) is common in the larger river valleys and in the low-lying area surrounding the lake shore where it occurs together with mopane (Colophospermum mopane) and thick jessie bush. In the river valleys, trees typical of the Zambezi Valley are common and include the tamarind (Tamarindus indica), mumvey (Kigelia africana) and Steculia species. Buffalo beans (Mucuma coriacea) are not uncommon in grassy river-beds. Physiographically, the area can be subdivided into three distinct regions, all of which have a marked geological control. They are- (1) The fault-lined Gwembe trough which has subsequently been inundated by the waters of Lake Kariba to an average altitude of 487 metres (1 600 feet) above sea level since the completion of the dam across the upstream entrance to the Kariba Gorge in 1960. The fiat land that now forms part of the lake shore is underlain by sediments of Karoo age and these, in the mapped area, occupy the Charara and Gachegache Basins, that lie to the north and south respectively of the Msango Range. These fiat-lying areas give way sharply to the gneissic terrain of the Zambezi Metamorphic Belt along the fault-lined Zambezi Escarpment. (2) The northern boundary of the area and the Msango Range are underlain by metasediments of the Makuti Group. The relief is strongly influenced by the regional geological structure of these complexly folded rocks with resistant meta-arkose and quartzite forming the sharp ridges and metapelites occupying the valleys. The ridges and valleys trend eastwards in the Msango Range, but along the northern boundary they trend north-westwards. (3) The linear topographic features of the Makuti Group terrain give way southwards to the older gneisses along an abrupt scarp edge, the base of which is marked by the Tsororo River. This terrain of gneisses is very rugged and highly dissected above the Zambezi Escarpment until it flattens out, at about 900 metres (2 950 feet) above sea level, into the Urungwe Tribal Trust Lands. In the rugged country above the Escarpment, granulites of the Piriwiri Group stand out above the gneisses as steep-sided conical bills. The country rises in a series of fault-lined steps to its highest point, at Nyamangwe trigonometrical beacon, which stands at 1 336 metres (4 382 feet) above sea level.
- Full Text:
- Date Issued: 1977
Gewestelike verskynsels in die Afrikaanse spreektaal van Oos-Kaapland met spesiale verwysing na Albanie
- Van der Mescht, J W F (Johannes Willem Frederik)
- Authors: Van der Mescht, J W F (Johannes Willem Frederik)
- Date: 1977
- Subjects: Afrikaans language -- Dialects
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3643 , http://hdl.handle.net/10962/d1014568
- Description: By 'n dialekgeografiese studie van hierdie aard sal dit by uitstek die verstandigste wees om te begin by 'n omgewing waarin die ondersoeker gebore is en grootgeword het. Die omgang van die ondersoek en die uitgestrektheid van die gebied wat hierby betrokke is maak dit egter vir 'n boorling net so moeilik as vir 'n goeie waarnemer uit enige ander spraakgebied wat ook daartoe in staat behoort te wees om bepaalde foniese, leksikale, grammatiese, semantiese en sintaktiese verskynsels, eienaardighede en tendensies in die spreektaal op te merk. My bekendheid en omgang met Afrikaanssprekendes in hierdie streek wil ek nietemin kortliks soos volg aandui: (a) Wat vir hierdie studie as "randgebiede" beskou kan word. Gebore en opgegroei in Willowmore (19 jaar), onderwysopleiding op Graaff-Reinet (3 jaar). Onderwysondervinding In die distrik Steytlerville (2 ½ jaar). (b) Die eintlike ondersoekgebied. Onderwysondervinding in Oos-Londen en omgewing (6 jaar) , Grahamstad (10 ½ jaar) afgesien van talle lisensies in Oos-Londen en Port E1izabeth en besoeke aan omliggende dorpe en distrikte.
- Full Text:
- Date Issued: 1977
- Authors: Van der Mescht, J W F (Johannes Willem Frederik)
- Date: 1977
- Subjects: Afrikaans language -- Dialects
- Language: Afrikaans
- Type: Thesis , Masters , MA
- Identifier: vital:3643 , http://hdl.handle.net/10962/d1014568
- Description: By 'n dialekgeografiese studie van hierdie aard sal dit by uitstek die verstandigste wees om te begin by 'n omgewing waarin die ondersoeker gebore is en grootgeword het. Die omgang van die ondersoek en die uitgestrektheid van die gebied wat hierby betrokke is maak dit egter vir 'n boorling net so moeilik as vir 'n goeie waarnemer uit enige ander spraakgebied wat ook daartoe in staat behoort te wees om bepaalde foniese, leksikale, grammatiese, semantiese en sintaktiese verskynsels, eienaardighede en tendensies in die spreektaal op te merk. My bekendheid en omgang met Afrikaanssprekendes in hierdie streek wil ek nietemin kortliks soos volg aandui: (a) Wat vir hierdie studie as "randgebiede" beskou kan word. Gebore en opgegroei in Willowmore (19 jaar), onderwysopleiding op Graaff-Reinet (3 jaar). Onderwysondervinding In die distrik Steytlerville (2 ½ jaar). (b) Die eintlike ondersoekgebied. Onderwysondervinding in Oos-Londen en omgewing (6 jaar) , Grahamstad (10 ½ jaar) afgesien van talle lisensies in Oos-Londen en Port E1izabeth en besoeke aan omliggende dorpe en distrikte.
- Full Text:
- Date Issued: 1977
Instability in the magnetotail
- Authors: English, Daniel Rowe
- Date: 1977
- Subjects: Magnetotails
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5425 , http://hdl.handle.net/10962/d1011764 , Magnetotails
- Description: The magnetic induction field due to the Earth only would, if undisturbed by any outside agency, resemble macroscopically the field due to a magnetic dipole. Hcwever the field is disturbed by the interplanetary magnetic field, of which the most important component is that of the Sun. If the Sun's magnetic field were effectively steady, it would also be a dipole field, and approximately constant in the region within about twenty earth radii from the earth. Also, if we treat the Sun as a dipole, its dipole axis is roughly normal to the ecliptic plane. The Earth, treated as a dipole, has an axis which is inclined to the normal to the ecliptic plane at an angle which varies daily from a few degrees to nearly a third of a right angle. However, in this paper, it is proposed to treat both dipole axes as contra-parallel and effectively normal to the ecliptic plane, so that a general idea of the combined field can be obtained. Then the effect of a steady field due to the Sun, on the Earth's field would be the formation of a "neutral ring" surrounding the Earth; that is, a closed "neutral line", this being a line of points at each of which the net nagnetic induction is zero. As the point of observation passes through this line, the field changes direction. Intro. p. v.
- Full Text:
- Date Issued: 1977
- Authors: English, Daniel Rowe
- Date: 1977
- Subjects: Magnetotails
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5425 , http://hdl.handle.net/10962/d1011764 , Magnetotails
- Description: The magnetic induction field due to the Earth only would, if undisturbed by any outside agency, resemble macroscopically the field due to a magnetic dipole. Hcwever the field is disturbed by the interplanetary magnetic field, of which the most important component is that of the Sun. If the Sun's magnetic field were effectively steady, it would also be a dipole field, and approximately constant in the region within about twenty earth radii from the earth. Also, if we treat the Sun as a dipole, its dipole axis is roughly normal to the ecliptic plane. The Earth, treated as a dipole, has an axis which is inclined to the normal to the ecliptic plane at an angle which varies daily from a few degrees to nearly a third of a right angle. However, in this paper, it is proposed to treat both dipole axes as contra-parallel and effectively normal to the ecliptic plane, so that a general idea of the combined field can be obtained. Then the effect of a steady field due to the Sun, on the Earth's field would be the formation of a "neutral ring" surrounding the Earth; that is, a closed "neutral line", this being a line of points at each of which the net nagnetic induction is zero. As the point of observation passes through this line, the field changes direction. Intro. p. v.
- Full Text:
- Date Issued: 1977
La femme dans l'oeuvre litteraire de Jean-Paul Sartre
- Authors: Seiler, Miriam Zimet
- Date: 1977
- Subjects: Sartre, Jean-Paul, 1905-1980 -- Criticism and interpretation
- Language: French
- Type: Thesis , Masters , MA
- Identifier: vital:3641 , http://hdl.handle.net/10962/d1014302
- Description: [From introduction]. Pourquoi examiner Ie rôle de la femme dans l' oeuvre de Sartre? Jean-Paul Sartre est l'un des philosophes les plus importants de ce siècle, un philosophe qui s'est consacré ấ un examen de l'homme et de ses rapports avec l'existence par la liberté conscienter; un penseur qui a montré son individualisme dans le domaine de la politique, n'acceptant que ce qu'il trouve défendable; un romancier et un dramaturge dont l'oeuvre a connu un succès mondial.
- Full Text:
- Date Issued: 1977
- Authors: Seiler, Miriam Zimet
- Date: 1977
- Subjects: Sartre, Jean-Paul, 1905-1980 -- Criticism and interpretation
- Language: French
- Type: Thesis , Masters , MA
- Identifier: vital:3641 , http://hdl.handle.net/10962/d1014302
- Description: [From introduction]. Pourquoi examiner Ie rôle de la femme dans l' oeuvre de Sartre? Jean-Paul Sartre est l'un des philosophes les plus importants de ce siècle, un philosophe qui s'est consacré ấ un examen de l'homme et de ses rapports avec l'existence par la liberté conscienter; un penseur qui a montré son individualisme dans le domaine de la politique, n'acceptant que ce qu'il trouve défendable; un romancier et un dramaturge dont l'oeuvre a connu un succès mondial.
- Full Text:
- Date Issued: 1977
Precipitation effects on atmospheric electron densities
- Authors: Huang, Cheryl Yu-Yin
- Date: 1977
- Subjects: Precipitation (Chemistry)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5527 , http://hdl.handle.net/10962/d1012441 , Precipitation (Chemistry)
- Description: In this thesis the effects of precipitated electrons on electron densities in the upper atmosphere are investigated. A method for solving the continuity equation has been developed , and this has been used to calculate electron density profiles under various conditions: daytime equilibrium conditions, with and without additional ionization by precipitated electrons; and nighttime conditions, with and without precinitation . This preliminary study seems to show that certain effects may be attributable to precipitation, and that these effects may be significant at night.
- Full Text:
- Date Issued: 1977
- Authors: Huang, Cheryl Yu-Yin
- Date: 1977
- Subjects: Precipitation (Chemistry)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5527 , http://hdl.handle.net/10962/d1012441 , Precipitation (Chemistry)
- Description: In this thesis the effects of precipitated electrons on electron densities in the upper atmosphere are investigated. A method for solving the continuity equation has been developed , and this has been used to calculate electron density profiles under various conditions: daytime equilibrium conditions, with and without additional ionization by precipitated electrons; and nighttime conditions, with and without precinitation . This preliminary study seems to show that certain effects may be attributable to precipitation, and that these effects may be significant at night.
- Full Text:
- Date Issued: 1977
Sensory dominance : an experiment across cultures
- Authors: Locke, Hester W
- Date: 1977
- Subjects: Perception -- Testing , Senses and sensation -- Testing , Dominance (Psychology)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3214 , http://hdl.handle.net/10962/d1012744
- Description: Physical and intellectual differences in the home environment of Xhosa and White children suggested that the interaction of touch and vision in situations of sensory conflict and the development of dominance may be different in children from these homes. Children aged 5-13 years were tested on apparatus which created a conflict of tactual and visual judgement about the perceived size of the stimulus. Xhosa and White subjects performed similarly except when only tactual judgement was allowed and the Xhosa group were less influenced by touch. The study concludes that for children touch and vision contribute equally to the resolution of sensory conflict when both senses are active in size-judgements and when only one mode is allowed for judging then the resolution is biased towards this mode. This outcome is different from that of experiments with adults and has implications for theories derived from them.
- Full Text:
- Date Issued: 1977
- Authors: Locke, Hester W
- Date: 1977
- Subjects: Perception -- Testing , Senses and sensation -- Testing , Dominance (Psychology)
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3214 , http://hdl.handle.net/10962/d1012744
- Description: Physical and intellectual differences in the home environment of Xhosa and White children suggested that the interaction of touch and vision in situations of sensory conflict and the development of dominance may be different in children from these homes. Children aged 5-13 years were tested on apparatus which created a conflict of tactual and visual judgement about the perceived size of the stimulus. Xhosa and White subjects performed similarly except when only tactual judgement was allowed and the Xhosa group were less influenced by touch. The study concludes that for children touch and vision contribute equally to the resolution of sensory conflict when both senses are active in size-judgements and when only one mode is allowed for judging then the resolution is biased towards this mode. This outcome is different from that of experiments with adults and has implications for theories derived from them.
- Full Text:
- Date Issued: 1977
Some aspects of the theory, application, and computation of generalised inverses of matrices
- Authors: Cretchley, Partricia C
- Date: 1977
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/6212 , vital:21063
- Description: The idea of generalising the classical notion of the inverse of a non-singular matrix arose as far back as in 1920, but it was not until the late fifties that the development of the theory gained any impetus. Since then , as is the case in the development of many new concepts , work done in parallel in various parts of the world has resulted in a great deal of untidiness in the literature : confusion over terminology , and even duplication of theory. More recently, however, some attempts have been made to bring together people active in the field of generalised inverses, in order to reach consensus on some aspects of definition and terminology, and to publish more general works on the subject. Towards this purpose, a symposium on the theory and application of generalised inverses of matrices was held in Lubbock, Texas, and its proceedings published in 1968 (see [25] ). A few other works of this nature (see [4], (19a] ) have appeared , but the bulk of the literature still comprises numerous diverse papers offering further ideas on the theoretical properties which these matrices have , and drawing attention to their application in areas of statistics , numerical analysis , filtering , modern control and estimation theory, pattern recognition and many others. This essay offers a look at generalised inverses in the following way: firstly a broad basis and background is established in the first three chapters to provide greater understanding of the motivation for the remaining chapters, where the approach then changes to become far more detailed. Within this general framework, Chapter 1 offers a brief glimpse of the history and development of work in the field. In Chapter 2 some of the most significant properties of these inverses are described, while in Chapters 3 and 4 and 5 attention is given to interesting and remarkable computational algorithms relating to generalised inverses (some well suited to machine processing). The material of Chapters 4 and 5 is largely due to Decell, Stallings and Boullion, and Tanabe, in [6], [24] and [27], respectively, while the source of material for the first three chapters is the literature generally, with Penrose's two papers providing a rough framework for Chapters 1 and 2 (see [17]).
- Full Text:
- Date Issued: 1977
- Authors: Cretchley, Partricia C
- Date: 1977
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/6212 , vital:21063
- Description: The idea of generalising the classical notion of the inverse of a non-singular matrix arose as far back as in 1920, but it was not until the late fifties that the development of the theory gained any impetus. Since then , as is the case in the development of many new concepts , work done in parallel in various parts of the world has resulted in a great deal of untidiness in the literature : confusion over terminology , and even duplication of theory. More recently, however, some attempts have been made to bring together people active in the field of generalised inverses, in order to reach consensus on some aspects of definition and terminology, and to publish more general works on the subject. Towards this purpose, a symposium on the theory and application of generalised inverses of matrices was held in Lubbock, Texas, and its proceedings published in 1968 (see [25] ). A few other works of this nature (see [4], (19a] ) have appeared , but the bulk of the literature still comprises numerous diverse papers offering further ideas on the theoretical properties which these matrices have , and drawing attention to their application in areas of statistics , numerical analysis , filtering , modern control and estimation theory, pattern recognition and many others. This essay offers a look at generalised inverses in the following way: firstly a broad basis and background is established in the first three chapters to provide greater understanding of the motivation for the remaining chapters, where the approach then changes to become far more detailed. Within this general framework, Chapter 1 offers a brief glimpse of the history and development of work in the field. In Chapter 2 some of the most significant properties of these inverses are described, while in Chapters 3 and 4 and 5 attention is given to interesting and remarkable computational algorithms relating to generalised inverses (some well suited to machine processing). The material of Chapters 4 and 5 is largely due to Decell, Stallings and Boullion, and Tanabe, in [6], [24] and [27], respectively, while the source of material for the first three chapters is the literature generally, with Penrose's two papers providing a rough framework for Chapters 1 and 2 (see [17]).
- Full Text:
- Date Issued: 1977
South African art, the romantic principle and the Grahamstown group
- Authors: Clark, George Phillip Haven
- Date: 1977
- Subjects: Art, South African , Art -- South Africa -- Grahamstown
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2501 , http://hdl.handle.net/10962/d1014638
- Description: The purpose of this essay is to examine the "rumblings in the belly of Leviathan from which we are able to diagnose his disease" (Comfort). Adopting a cyclical idea of art, it aims to point out that South African art has degenerated to a state where the much publicised so-called leaders of art are simply using charm techniques to woo the consent of a society whose metaphysics are derived from twentieth century collective materialism. The South African situation is examined, as is the Romantic principle underlying all genuine artistic activity. It is proposed that the cure lies in a reinstatement of this principle and in a readjustment of the concepts of reality and unreality. Finally, the Grahamstown Group is propounded as an embodiment of the Romantic principle with its implicit concept of artistic reality.
- Full Text:
- Date Issued: 1977
- Authors: Clark, George Phillip Haven
- Date: 1977
- Subjects: Art, South African , Art -- South Africa -- Grahamstown
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2501 , http://hdl.handle.net/10962/d1014638
- Description: The purpose of this essay is to examine the "rumblings in the belly of Leviathan from which we are able to diagnose his disease" (Comfort). Adopting a cyclical idea of art, it aims to point out that South African art has degenerated to a state where the much publicised so-called leaders of art are simply using charm techniques to woo the consent of a society whose metaphysics are derived from twentieth century collective materialism. The South African situation is examined, as is the Romantic principle underlying all genuine artistic activity. It is proposed that the cure lies in a reinstatement of this principle and in a readjustment of the concepts of reality and unreality. Finally, the Grahamstown Group is propounded as an embodiment of the Romantic principle with its implicit concept of artistic reality.
- Full Text:
- Date Issued: 1977
The animal image in art
- Authors: Hall, Elizabeth
- Date: 1977
- Subjects: Animals in art
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2496 , http://hdl.handle.net/10962/d1013329
- Full Text:
- Date Issued: 1977
- Authors: Hall, Elizabeth
- Date: 1977
- Subjects: Animals in art
- Language: English
- Type: Thesis , Masters , MFA
- Identifier: vital:2496 , http://hdl.handle.net/10962/d1013329
- Full Text:
- Date Issued: 1977