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Self-esteem of coloured and white scholars and students in South Africa

- Momberg, Allan

Authors: Momberg, Allan
Date: 1976
Subjects: Self-esteem in children , Self-esteem -- Cross-cultural studies
Language: English
Type: Thesis , Masters , MA
Identifier: vital:3217 , http://hdl.handle.net/10962/d1012876
Description: A measure of the self-esteem of 426 subjects was obtained by means of the Coopersmith Self-Esteem Inventory. The sample comprised two Afrikaans, two Coloured and two English groups. Each of the above three groups was made up of pupils and students, (i. e. there were six separate sample groups). The major purpose of this study was to ascertain whether or not the Coloureds could be said to differ meaningfully from their White counterparts with regard to their general level of self-esteem. A secondary objective was to investigate the possibility of the Afrikaans and English groups differing in self-esteem. No significant differences were found to exist between any of the three student sample groups. The ranking of the mean self-esteem scores of these groups was: Afrikaans (highest), Coloured, English (lowest). The only groups that differed significantly from one another at the pupil level were the Afrikaans and the Coloureds. Their ranking was: Afrikaans (highest), English, Coloured (lowest). The prediction arising from the hypothesis of this study was that the Coloureds do not necessarily differ from Whites in their general level of self-esteem. This view is held because factors similar to those which are believed to have facilitated the rise in the self-esteem of the American Negroes are now operating in South Africa. It was concluded that this prediction was upheld.
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Date Issued: 1976

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5-hydroxytryptamine and sexual behaviour in rhesus monkeys

- Gradwell, Peter Bertram

Authors: Gradwell, Peter Bertram
Date: 1976
Subjects: Rhesus monkey -- Behavior Sexual behavior in animals
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:3210 , http://hdl.handle.net/10962/d1012086
Description: Selective inhibition of 5-hydroxytryptamine by parachlorophenylalanine (PCPA) is able to restore sexual receptivity in female rhesus monkeys made unreceptive by bilateral adrenalectomy. PCPA in the doses used reduces the levels of 5-hydroxyindoleacetic acid (5HIAA) in the cerebrospinal fluid to 40 per cent of the normal oestradioltreated condition. Both the increased sexual receptivity and the lowered 5HIAA levels "in the CSF are in turn reversed by 5-hydroxytryptophal (5HTP), the irrmediate precursor of 5HT and the substance whose synthesis is inhibited by PCPA. 5HTP on its own reduces sexual receptivity and increases 5HIAA levels in the CSF of ovariectomised, oestradiol-treated (but otherwise intact) female rhesus monkeys. A substance other than an adrenal androgen has therefore been shown to restore sexual receptivity in adrenalectomised female monkeys . Testosterone propionate and oestradiol benzoate both lower the turnover rates of 5HT in the brains of ovariectomised female monkeys, as measured by the 2 hour probenecid test. Taken together, these findings suggest that adrenal androgens could act on specific sites in the female monkey brain via 5HT-containing neural systems, to control (or at least influence) sexual receptivity. All the results of administering oestradiol to ovariectomised monkeys in these experiments are consistent with the established roles of this hormone in female sexual attractiveness and in the gonadotrophin- controlling systems of the hypothalamo-hypophyseal axis. In contrast to these findings on 5HT and sexual receptivity in female monkeys, no clear role for 5HT- containing neural systems could be demonstrated in the grooming, aggressive or social behaviours of female monkeys. No clear role for 5HT could be demonstrated in the refractory period following ejaculation in male monkeys , or when testosterone replacement is given to castrated male monkeys.
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Date Issued: 1976

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The multiple image in art : a personal response

- Swift, Anthony J M

Authors: Swift, Anthony J M
Date: 1976
Subjects: Art, Modern -- 20th century , Art -- Themes, motives , Art appreciation , Art, Modern -- 20th century -- Philosophy
Language: English
Type: Thesis , Masters , MFA
Identifier: vital:2497 , http://hdl.handle.net/10962/d1013330
Description: The development of this thesis is akin to that of a painting. It is subject to various influences that have evoked ideas and each idea has stimulated other ideas, thus the continuity could have gone beyond the bounds of this work. It is not so much an amalgamation of similar ideas but a development of diverse ideas which have, once composed, a common factor - the Multiple Image. Image refers to some paintings that have been made or part of them, a photograph, a film, a subject visualized in the mind or a complex reforms which is suggestive. Multiple refers to anything that relatively repeats itself, has facsimilies of itself, triptychs, polyptychs or is a conglomeration of ideas in a work of art. Intro., p. 1.
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Date Issued: 1976

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Changes in the aerobic saprophytic microbial flora during biltong production with special reference to the micrococcaceae

- Taylor, M B

Authors: Taylor, M B
Date: 1976
Subjects: Micrococcaceae , Saprophytism
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4120 , http://hdl.handle.net/10962/d1013308
Description: Ninety-four presumptive Micrococcus and Staphylococcus strains isolated from both commercial beef biltong and game biltong, were identified using a scheme based on the system used by Baird-Parker. The changes occurring in both the aerobic, saprophytic microbial flora and the environmental factors, during conversion of beef to biltong, were examined. The predominantly Gram-negative, halo-sensitive flora initially present on the meat, was replaced by Gram-positive, halo-tolerant staphylococci and micrococci, which form the dominant component of the microflora of the final product. This replacement was attributed to changing environmental factors, principally to the increasing sodium chloride concentration and associated decline in water activity. The presence of the antifungal antibiotic, pimaricin, during processing did not influence the bacterial flora of the product. However, the addition of potassium sorbate altered the microbial profile of the product significantly. The presence of these two preservatives, at the concentrations used, could not be detected organoleptically. The importance of the saprophytic microflora of the product ln relation to the environmental factors during processing, is also discussed.
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Date Issued: 1976

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Brian Bradshaw

- Hogge, Rosemary

Authors: Hogge, Rosemary
Date: 1976
Language: English
Type: Thesis , Masters , MA
Identifier: vital:2506 , http://hdl.handle.net/10962/d1016168
Description: One assumes that Brian Bradshaw's career in art had been decided upon at an early age, but in fact it was not so. After he had attended the Canon Slade Grammar School in Bolton, his father suggested various options, some of them interesting, like becoming a veterinary surgeon, but that was rejected because although the boy liked 'putting things right' he didn't savour 'cutting things up'. For the same reason he couldn't follow the family tradition on his mother's side and become a doctor. Nor was his wish to become a sea-captain treated with any seriousness, although he thinks with nostalgia of life at sea; and he is pleased he didn't take up forestry because, although he loves the land and admires the art of designing the great gardens and parks which surrounded the Georgian and Regency houses of the 18th Century, he is appalled by the artificial mess they're making of the land now. So in that interim period before being conscripted, they suggested at home that he spend a few months at the Bolton Municipal School of Art under the guidance of Mr. John R. Gauld, and so his course was set for the future. He studied there for three years and was successful in obtaining the "drawing" and "pictorial design" certificates of the Ministry of Education, before joining His Majesty's Forces in 1942.
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Date Issued: 1976

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An account and explanation of the increased role played by women in the modern Olympic games 1896-1972

- Handley, Bridget Mary

Authors: Handley, Bridget Mary
Date: 1976
Subjects: Olympics -- History , Sports for women -- History , Women Olympic athletes
Language: English
Type: Thesis , Masters , MA
Identifier: vital:5150 , http://hdl.handle.net/10962/d1012149 , Olympics -- History , Sports for women -- History , Women Olympic athletes
Description: This thesis is concerned with the participation of women and girls in the Olympic Games. In these days of women's liberation it seemed appropriate to try to put together the knowledge available about women competitors and their participation in the Olympics. I have tried to set out an overall view with some historical background and then an account leading up to the initial and continuing participation of women in the Games and showing the reasons for the slow beginning and the gradual increase in numbers of competitors and sports. I have also tried to evaluate some well known myths and misconceptions concerning participation and made an attempt with the use of research data to disprove many of these.
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Date Issued: 1976

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Geology of the Elisenheim area, Windhoek district, South West Africa, with special reference to the Matchless amphibolite belt

- Finnemore, S H

Authors: Finnemore, S H
Date: 1976
Subjects: Matchless Copper Mine (Namibia) , Geology, Structural -- Namibia , Amphibolite -- Namibia , Geology -- Namibia
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5053 , http://hdl.handle.net/10962/d1011864
Description: The Elisenheim area is situated just north of Windhoek within the Windhoek Formation of the Swakop Subgroup and is underlain by monotonous succession of semi-pelitic schists with intercalations of amphibolite, talc schist, graphitic schist and marble. Petrographic studies on units of the Matchless amphibolite which outcrop in the south of the property, have resulted in the recognition of three different types of amphibolite, namely, epidote amphibolite, porphyroblastic amphibolite and chlorite-amphibole schist. Amphibole porphyroblasts generally display patchy and zonal intergrowths of hornblende and actinolite which are indicative of non-equilibration during prograde metamorphism. Talc schists have been mapped in the north of the property. All lithotypes have undergone three phases of deformation (Fl, FZ, F3) which terminated with the faulting which underlies the Klein Windhoek, Dobra, Tigenschlücht and Kuruma rivers. Medium grade regional metamorphism accompanied F 1, F Z and F 3 and outlasted the latter. Mineral assemblages throughout the area are those of the amphibolite facies and P, T conditions prevailing during metamorphism are estimated to have been at least 5 kb at ~ 550° C. Petrochemical evidence indicates that the Matchless amphibolites are igneous in origin and genetically related to the ultrabasic talc schists. They are similar in composition to oceanic tholeiites and are thought to have been extruded subaqueously.
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Date Issued: 1976

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Reaction phenomena between Karroo Dolerite and cave sandstone xenoliths in the Bird's River complex

- Kenyon, A K

Authors: Kenyon, A K
Date: 1976
Subjects: Volcanic ash, tuff, etc , Igneous rocks -- Inclusions , Sandstone
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4996 , http://hdl.handle.net/10962/d1005608
Description: Mapping of the north-eastern portion of the Bird1s River Complex revealed that two large xenoliths composed of pyroclastic rocks and sandstone of the Cave Sandstone Stage have reacted with the dolerite. All the reaction phenomena normally associated with Karroo Dolerite are encountered. These are: (a) Metasomatism during the stage of iron enrichment of the dolerite with the production of a pyroxene-plagioclase metasomatic granophyre (b) Metasomatism during the stage of alkali enrichment of the dolerite with the production of a potassium feldspar adinole C c) Assimilation 'vi th the production of contaminated doleri tes Cd) Fusion 'vi th the production of glassy rocks including buchi tes (e) The production of rheomorphic veins
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Date Issued: 1976

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Drummer Hodge : the poetry of the Anglo-Boer War (1899-1902)

- Van Wyk Smith, Malvern

Authors: Van Wyk Smith, Malvern
Date: 1976
Subjects: War poetry -- History and criticism South African War, 1899-1902 -- Literature and the war South African War, 1899-1902 -- Art and the war
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:2252 , http://hdl.handle.net/10962/d1003919
Description: From Preface: This is not a history of the Boer War; nor is it an exclusively literary study of the poetry of that war. If the work that follows has to be defined generically at all, it may be called an exercise in cultural history. It attempts to assess the impact of a particular war on the literary culture, especially the poetry, of both the participants and the observers, whether in South Africa, in Britain and the rest of the English-speaking world, or in Europe. An assumption made throughout this study is that war poetry is not only verse written by men who are or have been under fire. Just as 'War poetry is not to be confused with political, polemical, or patriotic verse, although it can contain elements of all of these, so it is also the work of observers at home as much as that of soldiers at the front. It follows that I have not allowed myself the academic luxury of selecting, on the basis of literary merit only, a handful of outstanding war poems for rigorous analysis and discussion. "Doggerel can express the heart" wrote one of these late-Victorian soldierly versifiers, and I have roamed widely in the attempt to assemble the material which, I believe, records the full range of the impact that the Boer War made not only on Briton and Boer, but on the worId at large. A major thesis of this study is that the Boer War marked the clear emergence of the kind of war poetry which we have come to associate almost exclusively with the First World War. Poems in the style and spirit of "The Charge of the Light Brigade" were written in profusion, but the work which serves as this study's masthead, Hardy's "Drummer Hodge," clearly has --like many of its contemporaries-- more in common with Owen's verse than with Tennyson's. The reasons for the appearance of such poetry are discussed in Chapter 1; the rest of the book provides the evidence of it.
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Date Issued: 1976

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A 22 GHz radio telescope

- Mutch, Laurence Ian

Authors: Mutch, Laurence Ian
Date: 1976
Subjects: Radio telescopes , Paraboloid , Radio astronomy
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5532 , http://hdl.handle.net/10962/d1012919
Description: This thesis reports on the design, construction, testing and operation of the spectral line and continuum receivers built for the 22 GHz Radio Telescope. First results from 'the telescope were obtained and have been analysed to give an estimate of system efficiency. Tests have been performed on the front end and in particular on the 22 GHz mixer in order to determine the minimum detectable temperature. The Sun, Moon and major planets are sources suitable for antenna alignment and consequently a literature survey of emission at 22 GHz from elements of the Solar system has been made.
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Date Issued: 1976

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Stratigraphy and sedimentology of the Cape and Karoo Sequences in the Eastern Cape Province

- Johnson, M R

Authors: Johnson, M R
Date: 1976
Subjects: Sediments (Geology) -- South Africa -- Eastern Cape Geology, Stratigraphic Sedimentology
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:5004 , http://hdl.handle.net/10962/d1005617
Description: The Cape Supergroup (Sequence) comprises three groups, embracing a total of twenty-three formations, with a maximum combined thickness of approximately 8 km. The Table Mountain Group consists of medium-grained (occasionally fine- or coarse-grained), "clean", ultra-quartzose sandstone plus subordinate fine-grained, "dirty", subfeldspathic to feldspathic sandstone, mudrock, and rhythmitite. Average total thickness is about 3000 m. The Bokkeveld Group is composed of mudrock, rhythmitite and subordinate subfeldspathic to feldspathic sandstone (generally fine-grained and "dirty"), with a maximum total thickness of over 3000 m. The Witteberg Group comprises fine- to medium-grained ultra-quartzose sandstone, icaceous streaky rhythmitite, mudrock, and one thin diamictite unit; total thickness is about 1700 m. The strata belonging to the Cape Supergroup appear to have been largely deposited under marine conditions in environments ranging from outer shelf to beach. Deltaic deposits are,however, common in the upper part of the Bokkeveld Group and the Witteberg Group, while the main sandstone units in the upper third of the Table Mountain Group may have accumulated on a coastal alluvial plain. Deposition took place in a basin elongated in an east-west direction, with the palaeoslope inclined towards the south. Palaeocurrents were generally directed down the palaeoslope, but westerly 1 transport directions parallel to the palaeostrike and presumed shoreline are present in both the Table Mountain and Witteberg Groups. I The sedimentary rocks o~ the Karoo Sequence are subdivided into two groups (containing a total of eleven formations) and four ungrouped formations. Using the maximum thicknesses of the individual formations, a combined total thickness of about 12 km can be calculated. The sequence commences with the Dwyka Tillite, a 700-m-thick diamictite unit. The overlying Ecca Group consists of "varved" rhythmitite, dark, massive, fine- to very fine-grained ultra-lithofeldspathic sandstone and subordinate mudrock with a total thickness of 2000 - 3000 m. The Beaufort Group is composed of thick mudstone layers alternating with thinner fine-grained ultra-lithofeldspathic, lithofeldspathic and lithic sandstones, with the exception of the Katberg Formation which consists largely of sandstone. Fining-upward cycles are ubiquitous, while red mudstone is com~on, especially in the upper half of the group. A maximum thickness of about 6000 m was obtained in the East London area. The Molteno Formation Consists of up to 600 m of alternating fine- to coarse-grained sublithic sandstones (frequently pebbly) and grey mudstones, generally forming finingupward cycles. The Elliot Formation (up to 500 m thick) consists of red and grey mUdstones and subordinate fine-grained lithofeldspathic sandstones arranged in fining-upward cycles. The bulk of the Clarens Sandstone consists of very fine-grained massive (occasionally cross-bedded) sandstone, with a maximum thickness of 300 m. The Drakensberg Group, consisting of up to 1200 m of basalt with some pyroclastic intercalations near the base, caps the Karoo sedimentary succession. The deposition of the Dwyka Tillite by glacier action coincided with a major change from the generally shallow marine conditions which characterised the sedimentation of the Cape Supergroup (with the source area located on the craton to the north of the basin) to a deep linear trough receiving clastic sediments from a source area situated south and south-east of the basin. The Ecca Group,the lower half of which is characterised by the presence of "proximal" turbidite sandstones, records the gradual infilling of this basin, with deltaic conditions developing in the upper part of the group in the western half of the study area (i.e. in the Waterford Formation). The overlying strata were virtually all deposited under fluviatile conditions, the chief exceptions being a stratigraphic interval within the lower half of the Beaufort Group which appears to have formed in a large body of water, a~d the aeolian Clarens Sandstone. The fluviatile sediments were all deposite1 by rivers flowin~ towards the north and nort~-west, while the Clarens Sandstone was laid down by winds blowing from the west. The Ecca and Beaufort Group sandstones are characterised by a high rock fragment content with "felsit ic" gra ins being a prc;>minent constituent. This, together with the relative abundance of quartzfeldspar porphyry pebbles in the Katberg Sandstone unit (Beaufort Group) near East London, indicates that volcanic material probably formed a prominent part of the post-Dwyka Karoo provenance.
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Date Issued: 1976

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A comparative study of the vocational interests of black and white school-leaving boys in South Africa

- Breger, Richard Allen

Authors: Breger, Richard Allen
Date: 1976
Subjects: Vocational interests -- South Africa , Vocational interests -- Cross-cultural studies
Language: English
Type: Thesis , Masters , MA
Identifier: vital:3200 , http://hdl.handle.net/10962/d1009692 , Vocational interests -- South Africa , Vocational interests -- Cross-cultural studies
Description: This is an exploratory study to compare the vocational interests of Black and White school-leaving boys in South Africa. The aim of the study is, first, to test the hypothesis that the samples hold similar stereotypes of vocations and that they structure interest fields in a similar way; and, second. to test the hypothesis that the vocational interests of the samples are different. The samples comprise four hundred and ten matriculants from schools in Johannesburg and Soweto. The methodological requirements for conducting cross-cultural research are adhered to as far is practically possible. The main findings provide general support for the hypotheses. It is found that the Black and White samples have similar vocational stereotypes and that they structure interest fields similarly, and in a way which closely approximates the reported structures characteristically found in Western culture. The Black and White samples differ in their vocational interests, although there are also similarities.
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Date Issued: 1976

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Feeding ecology of the cichlid fish Sarotherodon Mossambicus in Lake Sibaya, KwaZulu

- Bowen, Stephen H

Authors: Bowen, Stephen H
Date: 1977
Subjects: Cichlids -- Ecology , Fishes -- Ecology -- South Africa -- KwaZulu-Natal -- Sibaya, Lake
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:5837 , http://hdl.handle.net/10962/d1009688 , Cichlids -- Ecology , Fishes -- Ecology -- South Africa -- KwaZulu-Natal -- Sibaya, Lake
Description: The feeding of the cichlid fish Sarotherodon mossambicus in Lake Sibaya, KwaZulu, was studied in relation to various biotic and abiotic features of the l ake environment from January, 1973 to July, 1975. The primary goal of the study was to determine the cause of stunting and poor condition of adults in this population. Juvenile and adult S. mossambicus feed on a mixture of detritus, bacteria and diatoms that occurs as a flocculent layer on sand substrates throughout the lake. Concentrated gastric acid, commonly at pH values of 1.5 and lower, lyses diatoms and bacteria which are subsequently digested in the intestine. This is the first report of digestion of bacteria by a fish, and the nutritional significance of the finding is discussed. Juveniles feed predominantly on shallow sand terraces found along the margin of much of the lake, while adults usually feed in offshore waters at depths of 3 m and greater. Benthic floc from feeding areas of juveniles and adults have similar concentrations of organic matter, total carbohydrate, soluble carbohydrate and calories, but differ markedly in respect to diatom and protein concentration. Diatom concentrations are generally high in terrace floc but are consistently low in floc from deep water. Protein concentration of benthic floc decreases with increasing depth from 0 - 5 m. Partial correlation analysis shows that protein and diatom concentrations have no correlation independent. of their common relationship to depth, and the evidence implicates detrital bacteria as the primary source of protein in benthic floc. Probable causes of the observed distributions of diatoms and protein are discussed. The protein content of benthic floc profoundly influences its nutritional value. A comparison with available data on animal nutrition shows that the ratio of digestible protein to digestible energy in floc in the shallows is high enough that this food resource would be expected to support good growth, but the ratio for deep water floc is so low that it would be expected to result in conspicuous malnutrition. Thus, inadequate dietary protein is identified as the principal cause of stunting and poor condition of adult S· mossambicus in Lake Sibaya; It is argued that the ratio of digestible protein to digestible calories can be expected to determine the food value of particulate organic matter that includes amorphous detritus in other ecosystems. Despite stunting and poor condition of adults, S. mossambicus are abundant in Lake Sibaya. The precocious breeding of this population is discussed as an adaptation that allows it to maximize reproductive output given the limited resources available to adults. Juvenile S. mossambicus perform daily movements from deep water onto the terraces where they feed and then back into deep water. During periods of relatively low lake level when terrace waters were usually less than 1.5 m deep (1-73 to 1-74), juveniles were present on the terrace throughout daylight hours. At relatively high lake levels (7-74 to 8-75), juveniles were present on the terraces for only about five hours following sunset. Periods of heavy wave action interrupt feeding activity and result in reduced numbers of fish in terrace waters. The possible roles of predator avoidance and temperature in determination of daily feeding behavior are discussed. Daily energy assimilation by juveniles, estimated by a field technique, is approximately 115 cal per g fish dry weight.
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Date Issued: 1977

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Die administratiewe funksionering van bewindsinstellings in die Ciskei met besondere verwysing na plaaslike bestuur

- Groenewald, David Marais

Authors: Groenewald, David Marais
Date: 1976
Subjects: Public institutions -- Administration -- South Africa -- Ciskei , Public institutions -- Management -- South Africa -- Ciskei , Public institutions -- Government -- South Africa -- Ciskei
Language: Afrikaans
Type: Thesis , Masters , MA
Identifier: vital:2877 , http://hdl.handle.net/10962/d1012099 , Public institutions -- Administration -- South Africa -- Ciskei , Public institutions -- Management -- South Africa -- Ciskei , Public institutions -- Government -- South Africa -- Ciskei
Description: As gevolg van die ongekonsolideerde aard van die Bantoegebiede in die Ciskei is dit onmoontlik om diè gebied te begrens binne bepaalde relief kenmerke, soos bv. berge en riviere; of selfs binne administratiewe grense soos bv. magistraatsdistrikte. Intro., p. 1
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Date Issued: 1976

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