Showing items 101 - 120 of 465

Your selections:

Chateau de Sable

Cheikhul Khadim

Chikiling Ling Lee

Colonial photography in nineteenth century Grahamstown: an analysis of the Dr W.G. Atherstone Bequest

  • Authors: Waters, Hywell George
  • Date: 2000
  • Subjects: Atherstone, W. G. (William Guybon), 1814-1898 Art and photography Photography -- Technique
  • Language: English
  • Type: Thesis , Masters , MFA
  • Identifier: vital:2426 , http://hdl.handle.net/10962/d1002222
  • Description: The research for this degree comprises of a theoretical dissertationand a practicalcomponent of exhibited photographs. The theoretical research investigates the original photographic prints and glass-plate negatives taken betweenthe 1840's and 1890's, by the late Dr. W.G. Atherstone - an enthusiastic, Grahamstown amateur photographer. Dr W. G Atherstone's prints and negatives were examined by the author to deduce and establish his photographic abilities, his numerous techniques, diverse subject matter and the pictorialconstructionof his images. Selected works will be examined in order to interpret and illustrate his diverse interests and approaches towards photography. The selection of these photographs was determined by their pertinence to subject matter, and to the pictorial and historical considerations of the candidate. These issues are finally examined in relation to the candidates's own approach to photography today.
  • Full Text:
  • Date Issued: 2000

Comparative Spectroscopic and Electrochemical Properties of Bis (octakis (dodecylthio) naphthalocyaninato) europium (III) and Bis (tetra-tert-butylnaphthalocyaninato) europium (III) Complexes

  • Authors: Nyokong, Tebello , Furuya, Fumio , Kobayashi, Nagao , Du, Daming , Liu, Wei , Jiang, Jianzhuang
  • Date: 2000
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/293174 , vital:57062 , xlink:href="https://doi.org/10.1021/ic990483b"
  • Description: Bis(substituted-2,3-naphthalocyaninato)europium(III) complexes:  bis(octakis(dodecylthio)-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(SC12H25)8]2, 1} and bis(tetra-tert-butyl-2,3-naphthalocyaninato)europium(III) {Eu[2,3-Nc(t-Bu)4]2, 2} have been synthesized by cyclic tetramerization of naphthalonitriles with Eu(acac)3·H2O in the presence of 1,8-diazabicyclo[5.4.0]undec-7-ene (DBU) in refluxing n-octanol. These compounds were characterized by UV−visible, magnetic circular dichroism (MCD), near-IR, IR, EPR, and mass spectroscopies. The absorption and MCD spectra of 1 showed splitting of the Q band, with peaks at 700 and 784 nm, red shifted from the Q band of 2 at 763 nm. The absorption and MCD spectral band deconvolution calculations of complex 1 gave two A terms in the Q-band region. The A terms are assigned to 2A2 → 2E1 transitions. Cyclic voltammograms of 1 and 2 showed reversible oxidation couples at E1/2 = −0.28 V (for 2) and −0.25 V (for 1) vs ferrocenium/ferrocene (Fc+/Fc). The second oxidation exhibited a complicated behavior for both complexes. The reduction couples for 2 were observed at E1/2 = −0.61, −1.64, −1.97, and −2.42 V, and for 1 they were observed at E1/2 = −0.62, −1.60, −1.86, and −2.27 V vs Fc+/Fc. Spectral changes observed on chemical oxidation and reduction of the complexes are presented, and the behaviors of 1 and 2 are compared.
  • Full Text:
  • Date Issued: 2000

Comparative study on the biological performance of progenies of Western Sanga x Afrikaner and Bonsmara cattle in the sourish mixed bushveld of the North West Province

  • Authors: Moraka, Joseph Ntlhoki
  • Date: 2000
  • Subjects: Beef cattle breeds , Bonsmara cattle , Afrikaner cattle
  • Language: English
  • Type: Thesis , Masters , MTech
  • Identifier: vital:10947 , http://hdl.handle.net/10948/21 , Beef cattle breeds , Bonsmara cattle , Afrikaner cattle
  • Description: The study compares the biological performance of progenies of the Afrikaner x Western Sanga crossbred (small frame) and the Bonsmara (medium frame) cattle on the following traits: calving and growth rates as well as mortalities. The study was conducted in the Sourish Mixed Bushveld of the North West province. The objective was to identify a lowcare cattle breed, which can withstand unfavourable conditions under which most farmers in the North West Province operate. The results of this study indicated that, under good management, the Bonsmara cattle have higher growth rates compared to the Sanga cattle. There were statistical differences with regards to birth, pre-wean and wean masses, (P< 0.0001). Sanga cattle however were able to maintain higher calving rates under all varying conditions (Bonsmara 77% average and Sanga 84% average). The Sanga, due to its lower nutritional requirements, on average requires 15% less of the surface area required by the Bonsmara. Sanga cattle also returned better yields in terms of kilogram weaned calf per LSU and per hectare. With regard to herd mortalities, there was no significant difference (P = 0.03329).
  • Full Text:
  • Date Issued: 2000

Comparison of plant diversity in protected and communal lands in the Bushbuckridge lowveld savanna, South Africa

  • Authors: Shackleton, Charlie M
  • Date: 2000
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/181885 , vital:43777 , xlink:href="https://doi.org/10.1016/S0006-3207(00)00001-X"
  • Description: Patterns of higher plant species richness and beta diversity were assessed using standard Modified-Whittaker plots in relation to land use, slope position and mean annual rainfall across a rainfall gradient in the savanna areas of the Bushbuckridge lowveld, South Africa. In particular, comparison of communal areas with adjacent protected areas was important in showing the impacts of potential changes in land use within an overarching catchment management plan. Although most of the protected areas considered preservation of biodiversity as their primary goal, they were characterised by significantly fewer plant species than the adjacent, highly utilised, communal lands, at both the plot and point scale. Slope position also had a significant effect on plant species richness, with eutrophic bottomlands having c. 30% more species than the dystrophic toplands. This adds weight to the need for greater public awareness for the judicious use and management of the sensitive bottomlands, which fringe the primary drainage lines that are vital for sustained supplies of good quality surface water in this semi-arid environment. The total number of species increased with increasing mean annual rainfall across the rainfall gradient. This suggests that, if the catchment management plan aims to identify additional areas for conservation, the higher rainfall areas should be the first to be assessed. Species turnover was greater along the rainfall gradient than the catenal gradient between toplands and bottomlands.
  • Full Text:
  • Date Issued: 2000

Computers in science teaching: a reality or dream; The role of computers in effective science education: a case of using a computer to teach colour mixing; Career oriented science education for the next millennium

  • Authors: Nadarajah, Kumaravel
  • Date: 2000
  • Subjects: Science -- Study and teaching Computer-assisted instruction Education -- Data processing
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1460 , http://hdl.handle.net/10962/d1003341
  • Description: Science education in South Africa is not improving much. Many science educators do not have appropriate science qualifications. Majority of the learners have limited facilities to learn science. In this dilemma the move to OBE may result in further substantial deterioration of science education. A possible way out is to use computers in science education to facilitate the learning process. This study was designed to investigate how computers contribute to learners’ skills development in a physics course. A series of interactive computer simulations of colour mixing and a number of closely related traditional practical activities are aimed to promote learners’ understanding of colour. It was concluded that while computer environments have greater potentialas learning tools, they also limit interactions in significant ways.
  • Full Text:
  • Date Issued: 2000

Constitutional frameworks and democratization in Africa since independence

  • Authors: Neirynck, Karim
  • Date: 2000
  • Subjects: Democracy -- Africa , Constitutions -- Africa , Africa -- Politics and government -- 1960-
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2816 , http://hdl.handle.net/10962/d1003026 , Democracy -- Africa , Constitutions -- Africa , Africa -- Politics and government -- 1960-
  • Description: The subject of this thesis is international studies, specifically a study of constitutional frameworks in Africa in the second half of the 20th century, focussing on a statistical correlation between constitutional frameworks, party systems, electoral systems and the Index of Democracy. The struggle to consolidate new democracies - especially those in Eastern Europe, Latin America and Asia - has given rise to a wide-ranging debate about the hard choices concerning democratic political institutions and political markets. According to Stepan and Skach " this literature has produced provocative hypotheses about the effects of institutions on democracy" (Stepan and Skach, 1993 : 1). It forms part of the' new institutionalism I literature in comparative politics that'holds as a premise that political democracy depends not only on economic and social conditions but also on the design of political institutions (Koelble, 1995 : 231-243). " One fundamental political-institutional question that has only received serious scholarly attention concerns the impact of different constitutional frameworks on democratic consolidation. Although the topic has been increasingly debated and discussed, little systematic cross-regional evidence [especially for our field of research: Africa] has been brought to bear on it " (Stepan and Skach, 1993 : 1-2). So far, only the book"on regime transitions in Africa written by Bratton and Van De Walle seeks to fill this empirical gap (Bratton and Van De Walle, 1997, preface xiii). In this thesis, we paid particular attention to the dichotomy between (pure) parliamentarism and (pure) presidentialism. Each type has fundamental characteristics, and for the purposes of classification these characteristics are necessary and sufficient. It was not our purpose to weigh the benefits and drawbacks of parliamentarism and presidentialism. Our intention was to report and analyse different sources of data, and we based our case exclusively on statistic correlatiohs between regime type and the record of democratic success and failure. We collected a data set about constitutional frameworks (matrix1), democracy indices (matrix2), party systems (matrix3) and election systems (matrix4). The basis for matrix 1 was the constitutions of the African countries (over time) and relevant literature. The basis for matrix 2 was the annual Freedom House ratings made by Raymond D. Gastil and others. The basis for matrix 3 and 4 was relevant literature. Once these matrices had been composed, we compared them and calculated statistic correlations. This long-dyration model allowed us to estimate whether African constitutional frameworks, party systems and electoral systems exhibit positive or negative correlation with the index of democracy.
  • Full Text:
  • Date Issued: 2000

COSATU 7th national congress

  • Authors: COSATU
  • Date: 2000
  • Subjects: COSATU
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/178662 , vital:42972
  • Full Text:
  • Date Issued: 2000

Criteria social workers employ in making child custody recommendations

  • Authors: Froneman, Anna Petronella
  • Date: 2000
  • Subjects: Custody of children -- South Africa Social work with children -- South Africa
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: vital:696 , http://hdl.handle.net/10962/d1006414
  • Description: During this study, an attempt was made to investigate the process employed by social workers in conducting child custody evaluations and making decisions related to the process, as well as to provide insight into which criteria are currently being used. The goal was to explore the perceived usefulness of these criteria from the perspective of social work, and to assess the adequacy of the requirements of the custody report in reflecting the above process and decision-making. In order to meet this goal, literature and empirical studies were conducted. The literature study focuses on the history of child custody matters, custody decision-making and legislation, types of custody arrangements, criteria social workers employ in making child custody recommendations, evaluator bias and custody evaluation reports. During the empirical research phase, a non-probability purposive sampling procedure was adopted. Five family counsellors from the office of the family advocate serving the Eastern Cape were selected. After an interview schedule was compiled to cover certain topics and their sequence, semi-structured interviews were conducted with the family counsellors. In order to compare the criteria stated in the interviews with the criteria applied in the custody reports, three cases from each family counsellor were selected and the final custody report and recommendation were studied. This study has revealed the following: some of the family counsellors experience proqlems with the process of custody evaluations; certain aspects regarding the process are not in line with some ofthe literature; some of the criteria used by the family counsellors are not evident in the custody reports and are not discussed in detail; a lack of training exists for the family counsellors; and the family counsellors experience some form of bias. Finally, based on the research findings, recommendations were made regarding the process of custody evaluation, the criteria social workers employ when conducting child custody evaluations, training and bias of family counsellors, the role of the family advocate and possible future research.
  • Full Text:
  • Date Issued: 2000

Cuba's revolutionist and anti-imperialist foreign policy in Southern Africa: the case of Angola and Namibia

  • Authors: Othieno, Timothy
  • Date: 2000
  • Subjects: Cuba -- Foreign Relations -- Africa, Southern , Cuba -- Dependency on foreign countries -- History , Cuba -- Foreign relations -- Angola , Cuba -- Foreign relations -- Namibia , Cuba -- Politics and government
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2819 , http://hdl.handle.net/10962/d1003029 , Cuba -- Foreign Relations -- Africa, Southern , Cuba -- Dependency on foreign countries -- History , Cuba -- Foreign relations -- Angola , Cuba -- Foreign relations -- Namibia , Cuba -- Politics and government
  • Description: This study examines Cuba’s role in the two southern African countries of Angola and Namibia during the Cold War period. It argues that Cuba’s ideological motivations have been embodied in the mutually reinforcing concepts of proletarian internationalism and anti-imperialism. These conceptual perspectives constitute some of the central variables that influence Cuba’s foreign policy behaviour in international relations. It is within this context that one can understand Cuba’s involvement in Southern Africa. This study also attempts to explain that Cuban foreign policy towards Africa was based on two complementary and contextual objectives namely, promoting nationalism at home and nurturing revolutionary Marxist-Leninist governments, as well as supporting anti-colonial and anti-imperialist movements abroad. For the purpose of achieving these foreign policy objectives, Cuba not only engaged in state-to-state relations with Angola and Namibia; but had cordial relations with the rest of the continent and in particular Southern Africa, which also became a direct military testing ground for Cuba’s commitment to an anti-colonial and anti-imperialist revolutionary stance. Furthermore, the thesis shows that Cuba’s relentless hatred of imperialism is rooted in its historical relationship with the United States because from the turn of the century till 1958, the Americans interfered in Cuba’s internal affairs by supporting corrupt administrations and exploited the country. These practices by the United States laid the foundation for Cuba’s anti-colonialism and antiimperialism abroad. Ultimately, this thesis shows that Cuban involvement in Angola and Namibia can be conceptualised within these contexts (anti-imperialism, anti-colonialism, proletarian internationalism and revolutionary Marxism-Leninism). The role of Cuban nationalism in the realisation of these objectives and ideals, as well as its role in perpetuating and consolidating her foreign policy is assessed in this study. This nationalism and ideals of internationalism constitutes the central idea in the Cuban revolution. Finally, this thesis asserts that Cuban motives for getting involved in the politics of Southern Africa were not motivated by economic or imperialistic reasons. Rather, the historical similarity and colonial experiences between Africa and Cuba were some of the central causal factors.
  • Full Text:
  • Date Issued: 2000

Cumulative mild head injury in contact sport: a comparison of the cognitive profiles of rugby players and non-contact sport controls with normative data

  • Authors: Bold, Lisa Clare
  • Date: 2000
  • Subjects: Head -- Wounds and injuries -- Psychology , Neuropsychological tests , Head -- Wounds and injuries , Sports injuries -- Psychological aspects
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2935 , http://hdl.handle.net/10962/d1002444 , Head -- Wounds and injuries -- Psychology , Neuropsychological tests , Head -- Wounds and injuries , Sports injuries -- Psychological aspects
  • Description: This study investigates the effects of cumulative mild head injury on the cognitive functioning of elite rugby players. A comprehensive battery of neuropsychological tests was administered to top national (Springbok) rugby players (n=26), national Under 21 rugby players (n= 19), and a non-contact sport control group of national hockey players (n=21). The test results of the Total Rugby group (Springbok Rugby and Under 21 Rugby players), the Under 21 Rugby group, the hockey controls, and the Total Rugby and Under 21 Rugby forward and backline players respectively, were each compared with established normative data. Results showed significant differences in the direction of a poorer performance relative to the norms for the Total Rugby and Under 21 Rugby groups, and for the Total Rugby Forwards and Under 21 Rugby Forwards, on tests sensitive to the effects of diffuse brain damage. On the other hand, the Hockey Control group and the Total Rugby Backs and Under 21 Rugby Backs tended to perform within the normal range or better than the norm on some tests. These results confirm the hypothesis that rugby players, and the forward players in particular, are at risk of adverse cognitive effects consequent on cumulative mild head injury. The theoretical implications are that the aggregate effects of multiple exposures to mild head injuries in the rugby players served to reduce their brain reserve capacities and acted as a threshold-lowering influence associated with symptom onset.
  • Full Text:
  • Date Issued: 2000

CUSA meeting procedure booklet

  • Authors: CUSA
  • Date: 2000
  • Subjects: CUSA
  • Language: English
  • Type: text
  • Identifier: http://hdl.handle.net/10962/137076 , vital:37485
  • Full Text:
  • Date Issued: 2000

Cyanide-induced free radical production and lipid peroxidation in rat brain homogenate is reduced by aspirin

  • Authors: Daya, Santylal , Walker, Roderick B , Anoopkumar-Dukie, Shailendra
  • Date: 2000
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/184346 , vital:44210 , xlink:href="https://doi.org/10.1007/BF02674529"
  • Description: The neuroprotective properties of aspirin were investigated using cyanide-induced neurotoxicity as model. Cyanide, a known neurotoxic agent significantly increased lipid peroxidation and superoxide anion levels in rat brain homogenate in a concentration-dependent manner (0.25–1.0 mM). When homogenate, containing 1.0 mM KCN was cotreated with aspirin (1.0 mM) there was a significant decrease in lipid peroxidation. Aspirin (0.5 mM and 1.0 mM) also significantly reduced KCN-induced superoxide anion generation. The results of the present report therefore indicate a neuroprotective role for aspirin.
  • Full Text:
  • Date Issued: 2000

Dabiya-Baba Sissoko

Dalulu

Debbo

Dee Dee goes the distance

  • Authors: Thomas, Cornelius
  • Date: 2000
  • Subjects: Bridgewater, Dee Dee Jazz musicians -- United States -- Biography
  • Type: article
  • Identifier: http://hdl.handle.net/10962/32968 , vital:24099 , This image is held at the Cory Library for Humanities Research at Rhodes University. For further information contact cory@ru.ac.za. The digitisation of this image was made possible through a generous grant received from the Andrew W. Mellon Foundation 2014-2017. , MS 20 022
  • Description: Photocopied article from the newspaper The Daily Dispatch about Jazz musicians
  • Full Text:
  • Date Issued: 2000

Dekendo

  • Disclaimer
  • Privacy
  • Copyright
  • Contact