Showing items 781 - 800 of 978

Your selections:

The lack of resources as a contributory factor to the high failure rate in Standard 10 History examinations in the Alice circuit

The late Archaean Dominion Group, South Africa: petrogenesis of flood-type basalts and their mantle sources

  • Authors: Marsh, Julian S , Rogers, N W , Bowen, M P , Bowen, T B
  • Date: 1988
  • Language: English
  • Type: text , abstracts
  • Identifier: http://hdl.handle.net/10962/131690 , vital:36721
  • Description: The Dominion group has an age of 2.7 - 2.8 Ga and is the earliest of the cover sequences overlying the granite greenstone terrane in the western part of the Archaean Kaapvaal Craton, southern Africa. The Dominion group is largely built of volcanic rocks and is preserved over an area of 15,000 km² with a maximum thickness of 2.7 km.
  • Full Text:
  • Date Issued: 1988

The lazyman's song

The Mfecane as alibi : thoughts on Dithakong and Mbolompo

  • Authors: Cobbing, Julian
  • Date: 1988
  • Language: English
  • Type: Article
  • Identifier: vital:6154 , http://hdl.handle.net/10962/d1007067
  • Description: The ‘mfecane’ is a characteristic product of South African liberal history used by the apartheid state to legitimate South Africa's racially unequal land division. Some astonishingly selective use or actual invention of evidence produced the myth of an internally-induced process of black-on-black destruction centring on Shaka's Zulu. A re-examination of the ‘battles’ of Dithakong and Mbolompo suggests very different conclusions and enables us to decipher the motives of subsequent historiographical amnesias. After about 1810 the black peoples of southern Africa were caught between intensifying and converging imperialistic thrusts: one to supply the Cape Colony with labour; another, at Delagoa Bay, to supply slaves particularly to the Brazilian sugar plantations. The flight of the Ngwane from the Mzinyathi inland to the Caledon was, it is argued, a response to slaving. But they ran directly into the colonial raiding-grounds north of the Orange. The (missionary-led) raid on the still unidentified ‘Mantatees’ (not a reference to MaNtatisi) at Dithakong in 1823 was one of innumerable Griqua raids for slaves to counter an acute shortage of labour among Cape settlers after the British expansionist wars of 1811–20. Similar Griqua raids forced the Ngwane south from the Caledon into the Transkei. Here, at Mbolompo in 1828, the Ngwane were attacked yet again, this time by a British army seeking ‘free’ labour after the reorganisation of the Cape's labour-procurement system in July 1828. The British claim that they were parrying a Zulu invasion is exposed as propaganda, and the connexions between the campaign and the white-instigated murder of Shaka are shown. In short, African societies did not generate the regional violence on their own. Rather, caught within the European net, they were transformed over a lengthy period in reaction to the attentions of external plunderers. The core misrepresentations of ‘the mfecane’ are thereby revealed; the term, and the concept, should be abandoned.
  • Full Text:
  • Date Issued: 1988

The orientation of the standard six pupil transferring from primary to secondary schooling

  • Authors: Pollock, Graeme Mackenzie
  • Date: 1988
  • Subjects: Student adjustment , Students, Transfer of
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1377 , http://hdl.handle.net/10962/d1001443
  • Description: Pupils entering High School for the first time experience many problems of orientation and adjustment. This study arose from the conviction that something could be done to alleviate this time of stress to the benefit of both pupil and school alike. A brief review of literature showed that despite a fair amount of research having been done in Britain and the United States, there is still a dearth of information relating directly to the South African situation. Most transition studies differentiate between factors affecting academic adjustment, those relating to personal adjustment after transfer, and those which involve adjustment to environmental factors. In general studies approached orientation pogrammes from two perspectives - those that handled orientation as an event with its concomitant administrative and practical advantages, and those that saw it to be a process which has more person-focussed advantages. Most researchers agree that each school has its own needs and that the orientation programme should reflect those needs. Many favour a problem-solving approach to the design of any programme and emphasize the need for constant evaluation of the programme to maintain relevance and effectiveness. A low-key investigation into adjustment problems faced by new pupils in the High School was conducted by means of a questionnaire. Three main areas of information were investigated: attitude to school; personal adjustment as indicated by the self-concept; and general impression of Secondary School. The results confirmed that problems of orientation and adjustment are experienced by pupils in the South African Education System and revealed a framework upon which an orientation programme could be based. An overview of existing orientation programme objectives stresses the fact that orientation must be concerned with the total adjustment of the child - personal, academic and environmental - and that, of necessity, it involves the whole family. An orientation programme is outlined and expanded upon in order to provide a framework upon which other programmes could be designed, specific to the particular needs of the schools involved. Finally, certain observations are offered which may lead to a better understanding of the demands of the orientation process
  • Full Text:
  • Date Issued: 1988

The Path

  • Authors: Bunyan, David
  • Date: 1988
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/460369 , vital:75923 , https://journals.co.za/doi/epdf/10.10520/AJA00284459_117
  • Description: New Coin is one of South Africa's most established and influential poetry journals. It publishes poetry, and poetry-related reviews, commentary and interviews. New Coin places a particular emphasis on evolving forms and experimental use of the English language in poetry in the South African context. In this sense it has traced the most exciting trends and currents in contemporary poetry in South Africa for a decade of more. The journal is published twice a year in June and December by the Institute for the Study of English in Africa (ISEA), Rhodes University.
  • Full Text:
  • Date Issued: 1988

The petrology, mineralogy and geochemistry of the main zone of the Bushveld Complex at Rustenburg Platinum Mines, Union Section

  • Authors: Mitchell, Andrew Alexander
  • Date: 1988
  • Subjects: Mineralogy -- South Africa Petrology -- South Africa Rustenburg Platinum Mines Geochemistry -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4903 , http://hdl.handle.net/10962/d1001563
  • Description: Union Section of Rustenburg Patinum Mines is situated in the northwestern part of the Bushveld Complex, some twenty kilometres north of the Pilanesberg Alkaline Complex. The mining lease area covers a roughly triangular segment of Lower, Critical and Main Zone rocks, transgressed to the north and south by magnetite-bearing ferrogabbro of the Upper Zone. The Main Zone at Union Section is the focus of this study. The prime source of sample material for the study is the deep exploration borehole SK2, but additional, supplementary samples were collected on surface and underground, as well as from a second surface exploration borehole, SK4. In line with the recommendations of SACS (1980), the top of the Critical Zone, and therefore the base of the Main Zone, is taken to be the top of the Bastard Cyclic Unit. Sharpe (1985) suggested that the succession from the base of the Main is an isotopically separate entity Zone up to the Pyroxenite Marker from the rest of the Bushveld layered succession. This is not strictly true, as there is evidence that more than one parental magma was involved in the formation of this interval. It is, however, true that there are fundamental differences, particularly in isotopic makeup, between the Main Zone rocks below the pyroxenite Marker and those above (the latter having been assigned by Molyneux (1970) to subzone C of the Main Zone). Kruger et al. (1986, in press) suggested that the Pyroxenite Marker marks the base of the Upper Zone, and this convention is adhered to here. The implication of this is that the rocks which formerly constituted subzone C of the Main Zone are now considered part of the Upper Zone. The Main Zone rocks below the pyroxenite Marker were originally subdivided by Molyneux (1970) into two subzones, A and B. The results of the present study indicate that this subdivision is not justified. Instead, eight units have been distinguished in the Main Zone on geochemical, petrological and mineralogical bases. Each of these units is characterized by a coherent set, or progression, of chemical and petrological characteristics. The specific assignment of genetic connotations to these units has been deliberately avoided , at least until further studies of the Main Zone prove this to be justified. The demarcation of the eight units is illustrated in the composite diagram (Fig. 34) in the back pocket of this work, and the reasons for the subdivisions are listed in Table 6 (at the end of chapter 7 of this thesis). Until the late 1970's, it was thought that most layered cumulates formed by crystal settling (Wager and Brown, 1968). More recently, there has been a fundamental conceptual change, and many workers now believe that most cumulate rocks formed by in situ crystallization at the floor and walls of the magma chamber (McBirney and Noyes, 1979, Irvine, 1980a; Campbell, 1987). There is, however, some evidence for the physical separation of phases undergoing cotectic crystallization, particularly in the Upper Critical Zone and lower part of the Main Zone (Eales et al., 1986). This process, which has been alluded to in the past by various authors (Ferguson and Botha, 1963; Vermaak, 1976) involves the flotation of early-formed plagioclase crystals due to their positive bouyancy in tholeiitic liquids. The result is an apparent decoupling of the chemistry of pyroxene and plagioclase, as in unit IV of the Main Zone, where plagioclase becomes more anorthitic upwards, whilst pyroxene becomes more iron-rich. There is some substantial evidence, particularly in reversals in the strontium isotope initial ratio and the orthopyroxene Mg/(Mg+Fe) ratio , for multiple intrusion in the Main Zone. Although the largest and most important magma influx in the Main Zone was a high-R₀ aluminous tholeiite, as suggested by Sharpe (1985), the intrusive history of the Main Zone is believed to be far more complex than Sharpe (op. cit.) suggested. Significantly, there is strong evidence for small influxes of Upper Zone-type (Fe-rich tholeiite) magma in the upper reaches of the Main Zone. These are believed to be precursors to the major influx of Upper Zone-type magma at the pyroxenite Marker (Kruger et al, 1986, in press). The fate of intercumulus liquids in cumulate rocks has recently recieved substantial attention (Sparks et al., 1985; Morse, 1986; Barnes, 1986: Campbell, 1987). It is believed that the migration, or at least redistribution, of intercumulus liquids has played a vital role in modifying fractionation trends in the Main Zone. More importantly, the accumulation of late-stage intercumulus liquids is believed to be responsible for the formation of the Fe-rich ultramafic pegmatite bodies that interrupt the layered cumulates in borehole SK2 , Adobe Acrobat 9.53 Paper Capture Plug-in
  • Full Text:
  • Date Issued: 1988

The political department and the retraction of paramountcy in India 1935-1947

  • Authors: Moëd, Madeleine
  • Date: 1988
  • Subjects: India , India -- Politics and government -- 1919-1947
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: vital:2526 , http://hdl.handle.net/10962/d1001855
  • Description: The Political Department and the Indian Political Service stand accused of sins of omission and commission. The evidence suggests that they were badly hampered by ill-conceived training prodecures, a lack of manpower and above all the incoherent policy of the British government towards the Indian states. The failure of the 1935 Federation Act which formally established the Political Department was not due to princely intransigence inspired by political officers. Between 1935 and 1947 the Political Department embarked on a vigorous programme of combining the resources of the smaller states to strengthen them as viable partners in a new India. Their lack of success in effecting the federation of the states with India in 1947 was not a result of the disinclination of political officers to implement reform as much as their inability to do so. Many princes were also unwilling to sacrifice a measure of sovereignty for efficient government and paramountcy precluded forcing internal reform on the princes. Paramountcy was never clearly defined and thus its retraction in 1947 took place amidst confusion and misunderstanding on all sides. The Indian Political Service was always treated as secondary to the Indian Civil Service and the states to British India. Britain's emphasis on constitutional change in British India, reflected in the Cripps Mission of 1942, the Cabinet Mission of 1946 and the rush towards independence in 1947 resulted in her inattention to the Political Department and the princes which culminated in the abandonment of both in 1947.
  • Full Text:
  • Date Issued: 1988

The Port Elizabeth disturbances of October, 1920

  • Authors: Baines, Gary F, 1955-
  • Date: 1988
  • Subjects: Black people -- South Africa -- Port Elizabeth -- Social conditions , Police shootings -- South Africa -- Port Elizabeth , Labor movement -- South Africa -- Port Elizabeth -- History
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: vital:2529 , http://hdl.handle.net/10962/d1001858
  • Description: Chapter one suggests thet trade and merchant capital, which were crucial to Port Elizabeth's economic development during the nineteenth century, was subsumed by the rise of manufactures and industrial capital after the First World War. Industrial expansion was cut short by the post-war recession, which caused un- and underemployment. The black worker, who experienced a severe loss in real earnings on account of the increased cost of living, became involved in a struggle with employers for wage increases. Chapter two shows how the policy of segregation was applied in Port Elizabeth, which meant that the workers were subjected to an increasing degree of control and regulation of their daily lives. The conditions of reproduction in the black townships fostered inter-racial and cross-class mobilisation which culminated in the formation of a general labour union, the Port Elizabeth Industrial and Commercial Workers' Union (PEICWU). Chapter three will suggest links between the tradition in Port Elizabeth of worker resistance and the unionisation of black workers in the post-war period. Thus, the first three chapters attempt to provide a historical perspective for analysing the underlying causes of the 1920 Port Elizabeth disturbances. The immediate cause of the disturbances was the arrest of the Union leader, Masabalala, after he called for a general strike. Chapter four will show how the intervention of the local authorities provoked a spontaneous act of defiance on the part of Union members. A demonstration outside the Baakens Street Police Station to demand the release of Masabalala, precipitated the tragic shootings of 23 October 1920. The repressive violence which left 22 dead (with two further deaths resulting indirectly from the incident) was unprecedented in South African history. The resolution of the crisis brought the workers no nearer to obtaining a reasonable settlement of the wage issue. If anything, the resolve of employers to deny wage demands was hardened by the actions of the local authorities, who attributed the disturbances to ' agitation '. Such thinly-disguised justifications of the shootings by the dominant classes, however, provoked recriminations from other quarters. Chapter five examines the legal and political ramifications of the Port Elizabeth shootings. The circumstances of the shootings prompted the Smuts Government to appoint a Commission of Enquiry in the face of public pressure. The Commission found that the Police and vigilantes were largely to blame for the high death toll. But the Government's 'whitewash' of the findings could not absolve the Police from culpability entirely, nor could it sidestep its own responsibility and liability to victims of the shootings. Finally, in Chapter six, an attempt will be made to assess the long term impact of the shootings on the PElCU and the black labour movement in Port Elizabeth generally. The outcome of the episode was a victory for employers, which dealt a body blow to worker organisation which only became resurgent in the 1950s.
  • Full Text:
  • Date Issued: 1988

The power, the glory

The presented case study aims to demonstrate the efficacy of psychotherapy with a child previously treated with medication

  • Authors: Cheesman, C
  • Date: 1988
  • Subjects: Child psychotherapy
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3167 , http://hdl.handle.net/10962/d1007730 , Child psychotherapy
  • Description: The impetus for using the therapy with J.B. for this study was primarily the challenge inherent in the situation from the moment the parents and J.B. arrived for their family interview and assessment. They had been through many professionals by then, and much medication. They were sceptical of our intervention, since nothing to date had relieved the situation, and J.B. still had outbursts of rage towards his mother, he was still expressing suicidal ideation and anxiety. The challenge was particularly in relation to the mother, who had great difficulty conceptualising J.B. 's problems as being emotional and relational in nature - she was infinitely more comfortable with physiological interpretations of everything. This had the effect on the therapist and the supervisor of frequently reassuring their belief in psychotherapy as the treatment of choice in this case, or if in fact there was a lurking 'disease ' or organic cause to the child's behaviour. The pressure was thus considerable in this respect, despite the fact that the child had been examined physically and nothing found. This study aims to demonstrate the efficacy of psychotherapy, and the changes that took place, with this patient who was previously treated with medication.
  • Full Text:
  • Date Issued: 1988

The profit maximising pricing model

The promotion of a racially integrated Catholic community at King William's Town : challenges and opportunities

  • Authors: Fahy, Paul
  • Date: 1988
  • Subjects: Apartheid -- South Africa -- Religious aspects -- Catholic Church
  • Language: English
  • Type: text , Thesis , Masters , MA
  • Identifier: vital:1218 , http://hdl.handle.net/10962/d1001548
  • Description: Taking as its point of departure the model of the Church as a sacrament of unity, this study explores its implications for the fostering of a racially integrated Catholic community within an apartheid society. The particular context within which the investigation is conducted is the Sacred Heart Church, King William's Town, where the writer is pastor to a multiracial congregation. A dialogical approach is adopted between theology and praxis, in terms of which the data from a social analysis of the community are brought into a creative dialogue with the Vatican II vision of the Church. Findings from the analysis show that the attitudes of congregants to a racially integrated community are generally ambivalent. Historical, theological, psychosocial and political factors are seen to play an important role in shaping these attitudes. Arising from the dialogue between theology and praxis, the model of a pilgrim Church suggests itself as more relevant and realistic. This model constitutes a proximate goal. The sacrament model of the Church provides direction and focus for the pilgrim Church and is viewed as the ultimate goal. These models must be seen as complementary. The study concludes with a pastoral plan aimed at attaining the goals described. The main thrust of this plan is directed at changing congregants' attitudes to a racially integrated community. The strategies suggested involve the motivation of congregants to become actively involved, the transformation of congregants' attitudes, the promotion of a positive attitude to conflict and the challenging of apartheid structures. A differential approach is suggested in the pursuit of these objectives. A final conclusion to be drawn from this study is that the search for community is never-ending and that the fostering of a racially integrated Catholic community is a slow and painful process.
  • Full Text:
  • Date Issued: 1988

The psychological experience of being in hiding against the background of political repression in South Africa during the 1986 general State of Emergency: a phenomenological explication

  • Authors: Scheepers, Esca
  • Date: 1988
  • Subjects: Violence -- South Africa -- Psychological aspects , South Africa -- Politics and government -- 1989-1994
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3111 , http://hdl.handle.net/10962/d1004586 , Violence -- South Africa -- Psychological aspects , South Africa -- Politics and government -- 1989-1994
  • Description: This is a study in Critical Psychology which examines the psychological costs of one of the direct outcomes of political repression - the experience of being in hiding. The aims of the study can be depicted on two levels: it is first and foremost an attempt to provide a true account of the phenomenon of being in hiding. On a second level of equal importance it is an implicit and overt critique of the social order in which this phenomenon takes place. The psychological experience of being in hiding is examined and discussed in its proper socio-political context. Therefore, the theoretical part of the mini-thesis has a strong political bearing, focusing on the State, and extra-parliamentary opposition in South Africa. repression The empirical part of the mini-thesis explicates the psychological experience of being in hiding with the aid of the phenomenological method of investigation. Due to the lack of research on this or similar topics, it is discussed within the framework of the experience of a stressful life event. For the five subjects being in hiding was an extreme intervention which was imposed upon their existences and which brought about a qualitative transformation in the individual subjects mode of being-in-the-world - not only in terms of practicalities, but also on a deep experiential level. It was a phenomenon which touched on fundamental parts of their experience of themselves and their individual worlds and the way in which they actualized themselves. For them it essentially entailed a loss of relationships and roles which resulted in an experience of a measure of encapsulation or separation from the world of others . It was a profound, multi - dimensional disruption of the structure of the subject ' s existence which infused a rich emotional experience .
  • Full Text:
  • Date Issued: 1988

The role of male competition and female choice in the mating success of a Lek-breeding Southern African Cichlid fish Pseudocrenilabrus Philander (Pisces: Cichlidae)

  • Authors: Chan, Tin-Yam
  • Date: 1988
  • Subjects: Cichlids -- Africa, Southern -- Physiology Courtship in animals Fishes -- Reproduction Cichlids Pseudocrenilabrus philander Lek-breeding Courtship Reproduction Spawning Competition Rivalry
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5599 , http://hdl.handle.net/10962/d1002049
  • Description: A lek-breeding cichlid fish Pseudocrenilabrus philander was studied experimentally. Females in choice-chamber experiments showed no active choice for male size and colour, or for other male attributes, but preferred males which courted most actively. In a laboratory lek, the significant determinants of the strongly skewed mating success in males were territory size, side-shake and female chasing frequency. Together these three variables explained 79% of the variation in male mating success, with territory size alone accounting for 75% of the variation and the other two variables each accounting for 2% of the remaining variation. As there was no difference in territory quality in the laboratory lek, territory size became the principal measure of the effect of male-male competition since it was directly related to dominance. Both side-shake and female chasing could be identified as the basic factors influencing female choice, as they had an immediate effect on the display-response mating system of females. Thus, the relative importance of these three variables indicated that sexual selection in this particular lek mating species operated chiefly through the agency of intrasexual competition for dominance. However, both female behaviour and their requirement for a prolonged pre-spawning courtship had the effect of promoting male rivalry and favouring mating with dominant males. Although the intense male competition excluded subordinate males from practising normal courtship behaviour, competitively inferior males might "make the best of a bad situation" by facultatively adopting an alternative sneaking tactic to gain access to females. Spawning intrusions by females to steal freshly-laid eggs also occurred frequently. However, territorial males appeared to be relatively more tolerant of female intruders than male sneakers. Interference during spawning could lead to a longer pre-spawning courtship and even multiple-mating by females. The results of the present study and the behavioural evidence shown by males and females did not support the ʺrunaway selection modelʺ of the mating pattern in terms of sexual selection in leks, but conformed to the rival ʺwar propaganda modelʺ
  • Full Text:
  • Date Issued: 1988

The selection and evaluation of grey-level thresholds applied to digital images

  • Authors: Brink, Anton David
  • Date: 1988
  • Subjects: Image processing -- Digital techniques
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5443 , http://hdl.handle.net/10962/d1001996
  • Description: Many applications of image processing require the initial segmentation of the image by means of grey-level thresholding. In this thesis, the problems of automatic threshold selection and evaluation are addressed in order to find a universally applicable thresholding method. Three previously proposed threshold selection techniques are investigated, and two new methods are introduced. The results of applying these methods to several different images are evaluated using two threshold evaluation techniques, one subjective and one quantitative. It is found that no threshold selection technique is universally acceptable, as different methods work best with different images and applications
  • Full Text:
  • Date Issued: 1988

The sulphidization of mineral surfaces as applied to the froth flotation process

  • Authors: Ramagwede, Mudzimba Hubert
  • Date: 1988 , 2013-02-28
  • Subjects: Sulfide minerals , Flotation
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:4296 , http://hdl.handle.net/10962/d1004590
  • Description: This work constitutes a fundamental study of the interaction between soluble sulphide,copper (II) oxide and cerussite particles in the presence of Ca²⁺ ,Mg²⁺ starch , gum arabic and Triton X- IOO . A detailed investigation of the effect of pH of the system on the rate of sulphide uptake was made . In addition , the structural form of the surface precipitat.es were determined with the aid of scanning electron microscopy . On the basis of these results , it was concluded that adsorption of sulphide on cerussite in the presence or absence of Ca²⁺ starch, gum arabic and Triton X-IOO could either lead to the formation of a non-uniform or a uniform sulphide layer depending on the experimental conditions . However , the interaction of copper (II) · oxide wi th soluble sulphide in the presence or absence of the above mentioned species always led to the formation or a non-uniform sulphide layer . Preliminary experiments of the interaction between xanthate and sulphidized surface showed that oxide surface covered with metal sulphide layer reacts with less xanthate than the free oxide surface.
  • Full Text:
  • Date Issued: 1988

The timing of moult, morphology, and an assessment of the races of the Redwinged Starling

  • Authors: Craig, Adrian J F K
  • Date: 1988
  • Subjects: To be catalogued
  • Language: English
  • Type: article
  • Identifier: http://hdl.handle.net/10962/465560 , vital:76620 , https://zoologicalbulletin.de/articles/bzb-1980-1989/187-volume-39-4-november-1988
  • Description: An examination of wing-moult and the morphology of museum specimens of the Redwinged Starling has revealed clinal variation in wing-and tail-length in eastern Africa, but only two distinct groups with regard to the timing of wing-moult. Multivariate analysis suggests that only two subspecies should be recognised, O. morio rueppellii in Ethiopia and O. m. morio from Kenya to South Africa. Overlap and intergradation occurs in northern Kenya and adjacent areas.
  • Full Text: false
  • Date Issued: 1988

The wind is blowing again

The wind is blowing again

  • Disclaimer
  • Privacy
  • Copyright
  • Contact