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School grounds as a place for environmental learning in the life skills learning programme

  • Authors: Mambinja, Sindiswa
  • Date: 2009
  • Subjects: Environmental education -- Study and teaching (Elementary) -- South Africa --Grahamstown Life skills -- Study and teaching (Elementary) -- South Africa Education -- South Africa -- Curricula Education, Elementary -- South Africa School grounds -- South Africa -- Grahamstown Curriculum-based assessment -- South Africa
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1757 , http://hdl.handle.net/10962/d1003642
  • Description: With the intention of improving my own practice, the study investigated how school grounds could be used for environmental learning in the Foundation Phase Life Skill Learning Programme within the Revised National Curriculum Statement. The research was conducted in the Grade One class of Ntaba Maria Primary School situated in Grahamstown East. The study was an action research case study based on interpretive approach to research. It had two cycles comprised of two lesson plans. The first Lesson Plan focused on an audit of the school grounds to identify environmental issues. The second Lesson Plan was informed by the audit, and addressed one of the identified environmental issues. Data was gathered through analysis of curriculum documents, video recordings and photographs of learning interactions, journal entries and learners’ work. The study highlighted that school grounds provided a context for environmental learning within Life Orientation Learning Area especially when integrated with other learning areas. There were cases however, where assessment standards were only partly addressed. The study also revealed that the Life Orientation Learning Area was also limiting for school grounds learning opportunities in some cases. In other cases the study highlighted the open-ended nature of some of its assessment standards. The study also revealed how school grounds related activities offered opportunities and challenges for constructivist, situated and active learning. Opportunities and challenges regarding group work, language use, active engagement with information learning in authentic settings, and action and action competence; emerged as issues from the analysis. Finally, the study shed light on how reflection on learners’ work and assessment of these could help teachers modify activities and do them differently so as to enhance the achievement of skills, knowledge, attitudes and values. The achievement of investigative and problem-solving skills through the two lesson plans was critically evaluated as the processes of values education employed in the lesson implementation.
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  • Date Issued: 2009

Making sense of Men's Health: an investigation into the meanings men and women make of Men's Health

  • Authors: McCance-Price, Maris
  • Date: 2006
  • Subjects: Men's Health (South Africa) , Men's magazines -- South Africa , Men in mass media , Women in mass media , Sex role in mass media , Men in popular culture , Women in popular culture , Mass media -- Social aspects
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3464 , http://hdl.handle.net/10962/d1002919 , Men's Health (South Africa) , Men's magazines -- South Africa , Men in mass media , Women in mass media , Sex role in mass media , Men in popular culture , Women in popular culture , Mass media -- Social aspects
  • Description: This study investigates the popular pleasures produced by readers of men's magazines, focusing primarily on the publication, Men's Health, which represents a new type of magazine catering for men. Using qualitative research methods such as textual analysis and reception analysis, the study explores the pleasures produced by both men and women from the consumption of such texts. The theoretical perspective of cultural studies informs this project, an approach that focuses on the generation and circulation of meanings in society. Focusing on the notion of the active audience and Hall's encoding/decoding model, this study examines readers' interpretations of the Men's Health text, focusing on the moment of consumption in the circuit of culture. Reception theory proposes the existence of "clustered readings" produced by interpretive communities that are socially rather than individually constructed. As a critical ethnography, the study interrogates these meanings with particular reference to questions of gender relations and power in society. Access to different discourses is structured by the social position of readers within relations of power and this study takes gender as a structuring principle. Therefore, this study also explores the particular discursive practices through which masculine and feminine imagery is produced by the Men's Health text and by its readers. The research findings support the more limited notion of the active audience espoused by theorists such as Hall (1980) offering further evidence to suggest that readers produce readings other than those preferred by the text and that therein lies the pleasure of the text for male and female readers. The research concludes that the popularity of Men's Health derives from the capacity of its readers to make multiple meanings of the text.
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  • Date Issued: 2006

Monetary policy transmission in South Africa: the prime rate-demand for credit phase

  • Authors: Lehobo, Limakatso
  • Date: 2006
  • Subjects: South African Reserve Bank , Monetary policy -- South Africa , Banks and banking -- South Africa , Bank loans -- South Africa , Financial institutions -- South Africa , Finance -- South Africa
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: vital:1128 , http://hdl.handle.net/10962/d1020850
  • Description: A voluminous literature attempts to explain the various channels of the monetary policy transmission mechanism through which central banks ultimately achieve price stability. However, most research focuses on interest rate pass-through and the demand for money phase, while there is limited research on the demand for credit. This study endeavours to contribute to the understanding of this neglected phase of monetary policy transmission by exploring the response of the real demand for bank credit by the private sector to changes in the real prime rate from 1990:1 to 2004:4 in South Africa. Firstly, the behaviour of the real prime rate in relation to the repo rate is explored using graphical analysis. The study observes that an increase in the repo rate causes an increase in the real prime rate, such that there is always a margin of three or four percentage points between the two rates. Secondly, using secondary data, the Johansen methodology is used to determine the relationship between the demand for bank credit and its determinants (GDP, inflation, real prime rate and real yield on government bonds). Two co-integrating relationships are found. The Gaussian errors from one co-integrating vector are used to model the Vector Error Correction Model, which provides the short-run dynamics and the long-run results, through the use of Eviews 5 software. The results of the study show that while all other variables are negatively related to the demand for bank credit in the long-run, GDP has a positive influence. In the short-run, yield on government bonds and inflation coefficients depict a positive association, while the coefficients of real prime rate and GDP are negative. The error correction coefficient is -0.32, which implies that a 32% adjustment to equilibrium happens in the demand for bank credit in a quarter and that the complete adjustment takes about three quarters to complete. Thirdly, the generalised impulse responses results indicate that the impact on the real prime rate affects the demand for bank credit from the first quarter. The study concludes that the real prime rate has a negative impact on the demand for credit both in the short-run and long-run.
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  • Date Issued: 2006

Teacher's beliefs regarding the role of extensive reading in English language learning : a case study

  • Authors: Kajinga, Gilford
  • Date: 2006
  • Subjects: Reading Children -- Books and reading Bilingualism in children Education, Bilingual English language -- Study and teaching -- Foreign speakers
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1793 , http://hdl.handle.net/10962/d1003678
  • Description: Research suggests numerous views to account for the influence on practice of teachers’ beliefs. One view states that teachers’ lived experiences shape their beliefs about practice. Another view attributes the influence to school experiences. This research sets out to gain insight into teachers’ beliefs on the role of extensive reading in second language learning. A case study of 9 teachers from 3 schools in Grahamstown, South Africa selected purposefully and conveniently was utilised. The teachers were viewed to be knowledgeable on this matter by virtue of their profession while the 3 schools were selected to represent a private school, a former Model C and former Department of Education and Training (DET) school. Data was mainly collected by means of semi-structured interviews, which utilised in-depth open-ended questions to yield teachers’ past experiences. The findings revealed the following: all the teachers appeared to believe that extensive reading was invaluable and enhanced language skills. However, white and black teachers differed in terms of their early experiences of reading. Whereas for white teachers early experiences with literacy were encountered in the home, for black teachers the school was where they had their first exposure to literacy. In addition formal training in the form of an ACE (Advanced Certificate in Education) seemed to have influenced black teachers’ beliefs about the subject at hand, whereas the role of teacher education/ training was not as significant for white teachers.
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  • Date Issued: 2006

An exploration of how professional graphic design discourse impacts on innovation : a focus on the articulation of a South African design language in i-jusi

  • Authors: Moys, Jeanne Louise
  • Date: 2004
  • Subjects: Graphic arts -- South Africa , Words in art , Writing in art
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:3468 , http://hdl.handle.net/10962/d1002923 , Graphic arts -- South Africa , Words in art , Writing in art
  • Description: This study examines the graphic design industry’s call for ‘a South African design language’ in post-apartheid South Africa and how the non-commercial publication i-jusi is envisaged as a space for graphic designers to innovate a South African design language. The central premise of this research is that graphic design, as a form of cultural production, is discursive. In this respect, graphic design practice is constructed and constrained by professional discourse, which is in turn informed by social structures. However, discourse is also a site of contestation and graphic designers may challenge or negotiate professional discourse in their practice. Thus, as Wolff (1981) argues, the possibility for innovation within graphic design practice may exist at a particular historical moment, although this possibility is itself situated within social structures. In this study, the impact of professional graphic design discourse on the attempt to innovate a South African design language in i-jusi is explored. Utilising qualitative interviews and other texts selected from graphic design commentary (conference presentations and published articles), the motivations of the producers of i-jusi are examined with a view to assessing how their articulation of a South African design language is informed by professional graphic design discourse.
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  • Date Issued: 2004

The perceptions that mentors and in-service teachers in the basic education teacher diploma have of the nature and role of the mentoring system

  • Authors: Mostert, Johan André
  • Date: 2004
  • Subjects: Education -- Namibia Teaching -- Namibia Curriculum planning -- Namibia Educational change -- Namibia Teachers -- Training of -- Namibia Teachers -- In-service training -- Namibia
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: vital:1695 , http://hdl.handle.net/10962/d1003578
  • Description: This contextual analysis is concerned with the study of the Basic Education Teacher's Diploma In-service Curriculum. It is based on the following assumptions: firstly, that the BETD (Inset and Preset) represents the Namibian Educational Reform in the realm of Teacher Education. Secondly, it is assumed that the BETD as a vehicle for reform in Teacher Education should yield teachers who are capable of change and development. Based on the above-mentioned assumptions, this analysis examines this Teacher Education course/programme against some criteria pertinent to its philosophy. A critical analysis of its curriculum in terms of some core subjects, as well as its practical implementation, will form the basis of this scrutiny. Secondary to the above, this analysis also intends to reflect this sociohistoric and economic context in which the BETD has been designed. An underlying motive in this analysis is to study the dynamics between the philosophy, which represents the heart and intention of the Namibian educational reform on the one hand and implementation which in turn delivers the end product or final outcome of the course on the other hand. This analysis should also fit into the current debate between conservatives who claim that the BETD lacks content and is therefore inferior, and those who claim that the course adequately prepares teachers for the needs of Basic Education.
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  • Date Issued: 2004

Development of effective solutions for the implementation and management of owner-driver schemes in the Province of the Eastern Cape

  • Authors: Ranchod, Sanjiv
  • Date: 2001
  • Subjects: Transportation, Automotive -- Dispatching , Small business -- Management Case studies , Storage and removal trade -- Subcontracting -- South Africa , Trucking -- South Africa , Contracting out -- South Africa
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: vital:10891 , http://hdl.handle.net/10948/55 , Transportation, Automotive -- Dispatching , Small business -- Management Case studies , Storage and removal trade -- Subcontracting -- South Africa , Trucking -- South Africa , Contracting out -- South Africa
  • Description: Introduction: During the past decade, companies have examined their core business, and anything that was not related to this, or did not add value to their product, was outsourced. One of the functions which fell into this category was the distribution operation, or more commonly known as transportation (in and out bound). In many instances, the distribution function was given up for tender, and specialised transport businesses, called third party logistic providers, whose core business was transport, were given the opportunity of taking over the distribution function. Some progressive companies went a little beyond the traditional approach and created opportunities for their own employees to be involved in the newly created, outsourced distribution network. This was largely an empowerment opportunity, with the aim of creating SME’s (Small-Medium-Enterprises), and providing people from a previously disadvantaged background (black people and other ethnic minorities) the opportunity to go into a business enterprise for themselves. The latter, although, politically the correct thing to do, simultaneously created opportunities and problems. Many of the companies that empowered their own employees, through Owner-Driver schemes, used the driving competency levels as the main criteria for the transition process. The other required skills were often overlooked or ignored. This empowerment process was driven to promote “Black Economic Empowerment”, an important national imperative. Although this process was an honorable gesture on the part of many companies, the process often took place without much foresight The viability and long-term continuity of the business were not taken into account. It is the researchers personal view, based on interviews with O-D’s and companies operating O-D schemes that the O-D’s which were empowered to operate their own business ventures, had limited or insufficient business skills and the very businesses that were given to them to improve their lifestyle were at risk of becoming unviable enterprises. This is clearly evident in some of the schemes being operated by companies such as Autonet and South African Breweries (hereinafter referred to as SAB). Other Eastern Cape companies that operate Owner-Driver schemes include Italtile, Shatterprufe and Ready Mix Materials (hereinafter referred to as RMM), and according to Management consultants spoken to, have obtained mixed levels of success with their schemes. The above schemes were confirmed with the various companies mentioned.
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  • Date Issued: 2001

An examination of the drafting-responding process used to develop students' writing in an English Language for Academic Purposes Course

  • Authors: Quinn, Lynn
  • Date: 2000
  • Subjects: English language -- Study and teaching (Higher) -- Foreign speakers , Rhodes University -- Academic Development Programme , Academic writing -- Study and teaching (Higher) -- South Africa , Educational anthropology -- South Africa , Educational sociology -- South Africa
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2359 , http://hdl.handle.net/10962/d1002642 , English language -- Study and teaching (Higher) -- Foreign speakers , Rhodes University -- Academic Development Programme , Academic writing -- Study and teaching (Higher) -- South Africa , Educational anthropology -- South Africa , Educational sociology -- South Africa
  • Description: Many students when they arrive at university do not possess the “cultural capital” (Bourdieu 1977) which is favoured by the institution. The purpose of the English Language for Academic Purposes (ELAP) course and the drafting-responding process is to help students to begin to acquire the “cultural capital” required to succeed at university. The research reported on in this thesis examined the drafting-responding process as it is used to develop students’ writing in the ELAP course at Rhodes University. The process involved students submitting drafts of their essays on which they received constructive and formative feedback from their ELAP tutor. This feedback was then used to revise their essays before a final version was submitted for assessment. The research took the form of a case study with an essentially interpretive orientation. I examined the drafts (with the tutor’s comments) and final versions of seven students’ ELAP essays. Additional data was obtained by interviewing the students and the tutor. Underpinning my beliefs regarding the role of writing in learning as well as my orientation to research is an understanding of knowledge and learning as being socially constructed. All writing is embedded in and dependent on, not only the immediate social circumstances, but also the broader social and cultural context. In analysing and discussing the data in this research I used Halliday’s (1985) definition of context, in which he draws a broad distinction between the immediate context of situation and the broader context of culture The research findings showed that the drafting-responding process can help students with the process of developing the academic literacy they need in order to write essays within specific situational contexts, in this case, the context of the ELAP course. In addition, at a broader level, it can help students to begin the process of being initiated into the culture of the university as a whole.
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  • Date Issued: 2000

An investigation into the enlightenment and aspects of Spanish life which may have influenced Los Caprichos (1797-1799) of Francisco de Goya (1746-1828)

  • Authors: Ralls, Warren John
  • Date: 1997
  • Subjects: Goya, Francisco, 1746-1828 -- Criticism and interpretation Goya, Francisco, 1746-1828. Caprichos
  • Language: English
  • Type: Thesis , Masters , MFA
  • Identifier: vital:2421 , http://hdl.handle.net/10962/d1002217
  • Description: The aim of this mini-thesis was to investigate if the Spanish artist Francisco Jose de Goya y Lucientes (1746-1828) was aware of the progress that enlightened thought brought to Spain during the late eighteenth-century, and to see whether this had any effect on his series Los Caprichos (1797-1799). According to some contemporary historians, such as Dowling (1985, p. 347), the " ... specific subject-matter of the Caprichos came directly from the ideology of the Spanish Enlightenment. " The contemporary historian Jeremy Black (1990, p. 208) described the Enlightenment as a " ... tendency towards critical enquiry and the application of reason." Enlightened thinkers were primarily critics who used reason as a goal and a method to create a better society. Reason was believed to be a characteristic trait of the human species, human development and social organisation. The Enlightenment is not a purely seventeenth and eighteenth century phenomenon, but originated in the ideas of the classical civilizations and also the humanism of the Middle Ages and Renaissance in Europe. Many intellectuals were responsible for this new direction of thinking. The ideas of these scientists and philosophers are discussed in some detail, especially those beliefs which are clearly seen in the subject-matter of Los Caprichos. In addition, consideration is given to the possible effects of some of the historical events on the life and work of Goya, for example, the French Revolution (1789) and the Reign of Terror (1793-1794) which followed the Revolution. In order to understand the background of the environment into which Goya was born and in which he developed, research was done on Spanish life and the monarchs of the eighteenth century. Specific attention is given to two Spanish kings from the House of Bourbon: Charles 3, who began numerous enlightened reforms in Spain and reigned around the time of Goya's early artistic and social development, and Charles 4 who did not continue the reforming policies of his father and ruled Spain when the Caprichos were produced. The extent to which the Enlightenment spread to Spain is investigated, especially during the period in which Goya lived. Notable progressive thinkers of this European country are discussed, and special attention is given to those open-minded people whom Goya met. There appears to be proof that Goya may have been inspired by numerous of these learned Spaniards, and where this has motivated the Caprichos, special mention is made. The general census of the twentieth century, however, seems to be that Goya was not a towering intellectual thinker, but he was most certainly not an illiterate, unintelligent person either. The themes of Los Caprichos strongly suggest that he was influenced by enlightened individuals many of whom were his friends, such as the wealthy businessman and art-collector Sebastian Martinez (17 ?-1800) (with whom Goya stayed during a serious illness in 1792-1793). The letters written by Goya to his childhood friend Martin Zapater (1746-18 ?) and selected prints from the Caprichos provide sufficient proof to indicate that enlightened thought inspired the work of Goya. It must be recognised, however, that there were other events that could have been influential such as: his appointment as Painter to the King in 1786, which provided Goya with a regular salary and released him from the demands of patrons, giving his imagination free reign; the illness that he suffered from 1792 until 1793, which could have caused Goya to view his life in perspective and could have given him the courage to criticise society. On a smaller scale, the possible love affair that Goya had with the Duchess of Alba, which turned sour, was possibly a blow to his self esteem. This is a subject which is seen in a few of the prints from Los Caprichos. The research gathered for this mini-thesis is from the ex post facto source-material available through Rhodes University library, and any other attainable published data connected to Goya. This information consists of secondary sources which include copies of manuscripts dating from the time of Goya as well as first-hand observations of Goya's art.
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  • Date Issued: 1997

The development and evaluation of a Nd:YAG laser incorporating an unstable resonator

  • Authors: De Kock, Trevor Neil
  • Date: 1986
  • Subjects: Nd-YAG lasers , Lasers -- Resonators , Laser beams
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:5512 , http://hdl.handle.net/10962/d1008566 , Nd-YAG lasers , Lasers -- Resonators , Laser beams
  • Description: Introduction: For approximately the last eight years the Laser Section of the National Physical Research Laboratory (NPRL) has been interested in inter alia, pulsed solid-state lasers and in particular, Nd:YAG. Investigations of various resonator types were undertaken with a view to the improvement of the laser parameters such as output energy, pulse width, beam quality and sensitivity to mirror misalignment. In 1980 a Nd: YAG laser employing a rotating prism Q-switch was constructed (Preussler (1980)). It involves rotating one of the two cavity reflectors so that they are parallel for only a brief instant in time. Typically the prism must rotate at a speed of 20 000 r.p.m. to ensure a single pulse output. Such lasers suffer from the tendency to emit multiple pulses, they are very noisy and they require frequent maintenance because of the short lifetime of the bearings. A resonator employing conventional curved mirrors and an electro-optical Q-switch was constructed in 1980 (Robertson & Preussler (1982)). In 1981 an electro-optically Q-swi tched laser making use of a crossed Porro-prism resonator was investigated due to its relative insensitivity to misalignment of the reflectors compared with the conventional mirror resonator (Nortier (1981)). Improvements in terms of output power, beam divergence and beam quality can be achieved by making use of a so-called unstable resonator. Such a laser has been investigated and is reported on in this study. Chapter 2 provides some background into laser theory and operation while chapter 3 deals with the theory of the unstable resonator. Chapter 4 provides details of the experimental equipment and techniques used in the work and chapter 5 discusses the evaluation of the project and results obtained.
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  • Date Issued: 1986

The development of an in-service training programme for mathematics teachers on the development and use of resource materials in black schools at the standard six-seven level

Adreno-active substances and the pineal gland

  • Authors: Midlane, Graham Wallace
  • Date: 1979
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: vital:3738 , http://hdl.handle.net/10962/d1001530
  • Description: The pineal gland, a biochemically very active neuroendocrine transducer which is innervated by the sympathetic nervous system, was used in vivo to evaluate the effect of different þ-adrenoceptor agonists and antagonists on pineal enzyme levels. Hydroxyindole-O-methyltransferase (HIOMT), an enzyme with a circadian activity and unknown control was not significantly affected by these drugs. The activity of serotonin N-acetyltransferase, another pineal enzyme with a greater amplitude of circadian rhythmicity and which is under noradrenergic neural control, the degree of blockade depending on the selectivity and affinity of the agent used. An attempt was also made to alter the oestrous cycle of the rat by dosing with þ-active substances. Only propranolol had any effect on the oestrous cycle. It was not possible to establish an absolute link between the alteration in pineal enzyme activity and an influence on the oestrous cycle. It was concluded that the pineal enzyme studies are useful pharmacological means for evaluating þ-active substances
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  • Date Issued: 1979

The polysaccharides of Opuntia ficus-indica (L.) Mill. and Opuntia aurantiaca Lindl.

  • Authors: McGarvie, Donald
  • Date: 1977
  • Subjects: Polysaccharides
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:4438 , http://hdl.handle.net/10962/d1007597
  • Description: The partially acetylated acidic mucilage isolated from the cactus Opuntia ficus-indica consists of a highly branched molecule containing D-galactose, L-arabinose, D-xylose, D-galacturonic acid and L-rhamnose in the ratio 2.9:6.6:3.8:1.3 : 1.0. A partial hydrolysis study led to the isolation of fourteen oligosaccharides and a degraded polysaccharide. Periodate oxidation of the degraded polysaccharide and methylation analysis of the degraded and reduced degraded polysaccharides led to the proposal of a structure for the degraded polysaccharide consisting of a chain of alternating α-l,4-D-galactopyranosyluronic acid and β-1,2-Lrhamnopyranosyl units with branches consisting of short chains of β-1,6-D-galactopyranosyl units Iinked to C-3 of the rhamnose residues. An insight into the nature of the peripheral side-chains was obtained by methylation studies of the oligosaccharides and the native polysaccharide. The majority of the side-chains are terminated by D-xylopyranosyl and L-arabinofuranosyl units while there is a small proportion of D-galactopyranosyl end-groups. The remaining units of the peripheral chains consists of mainly 1,3- and 1,5-1 inked L-arabinofuranosyl units. The acidic polysaccharide isolated from the jointed cactus Opuntia aurantiaca contains D-galactose, L-arabinose, D-xylose, D-galacturonic acid and L-rhamnose in the ratio 5.9:5 .5:3.4: 1. 2:1.0 . A partial hydrolysis study revealed a similar series of galactose containing oligosaccharides as was identified from the mucilage of Opuntia ficus-indica. The degraded polysaccharide isolated from the partial hydrolysate was methylated and a possible structure proposed for the repeating unit. Methylation studies of the native polysaccharide indicated a polysaccharide with a more complex structure than that for the mucilage of Opuntia ficus-indica.
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  • Date Issued: 1977

The Hamilton-Jacobi theory in general relativity theory and certain Petrov type D metrics

  • Authors: Matravers, David Richard
  • Date: 1973
  • Subjects: Hamilton-Jacobi equations , General relativity (Physics) , Generalized spaces
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: vital:5422 , http://hdl.handle.net/10962/d1007551 , Hamilton-Jacobi equations , General relativity (Physics) , Generalized spaces
  • Description: Introduction: The discovery of new solutions to Einstein's field equations has long been a problem in General Relativity. However due to new techniques of Newman and Penrose [1], Carter [2] and others there has been a considerable proliferation of new solutions in recent times. Consequently a new problem has arisen. How are we to interpret the new solutions physically? The tools available, despite a spate of papers in the past fifteen years, remain inadequate although often sophisticated. Any attempts at physical interpretations of metrics are beset with difficulties. There is always the possibility that two entirely different physical pictures will emerge. For example a direct approach would be to attempt an "infilling" of the metric, that is, an extension of the metric into the region occupied by the gravitating matter. However even for the Kerr [1] metric the infilling is by no means unique, in fact a most natural "infilling" turns out to be unphysical (Israel [1]). Yet few people would doubt the physical significance of the Kerr metric. Viewed in this light our attempt to discuss, among other things, the physical interpretation of type D metrics is slightly ambitious. However the problems with regard to this type of metric are not as formidable as for most of the other metrics, since we have been able to integrate the geodesic equations. Nevertheless it is still not possible to produce complete answers to all the questions posed. After a chapter on Mathematical preliminaries the study divides naturally into four sections. We start with an outline of the Hamilton-Jacobi theory of Rund [1] and then go on to show how this theory can be applied to the Carter [2] metrics. In the process we lay a foundation in the calculus of variations for Carter's work. This leads us to the construction of Killing tensors for all but one of the Kinnersley [1] type D vacuum metrics and the Cartei [2] metrics which are not necessarily vacuum metrics. The geodesic equations, for these metrics, are integrated using the Hamilton-Jacobi procedure. The remaining chapters are devoted to the Kinnersley [1] type D vacuum metrics. We omit his class I metrics since these are the Schwarzschild metrics, and have been studied in detail before. Chapter three is devoted to a general study of his class II a metric, a generalisation of the Kerr [1] and NUT (Newman, Tamburino and Unti [1]) metrics. We integrate the geodesic equations and discuss certain general properties: the question of geodesic completeness, the asymptotic properties, and the existence of Killing horizons. Chapter four is concerned with the interpretation of the new parameter 'l', that arises in the class II a and NUT metrics. This parameter was interpreted by Demianski and Newman [1] as a magnetic monopole of mass. Our work centers on the possibility of obtaining observable effects from the presence of 'l'. We have been able to show that its presence is observable, at least in principle, from a study of the motion of particles in the field. In the first place, if l is comparable to the mass of the gravitating system, a comparatively large perihelion shift is to be expected. The possibility of anomalous behaviour in the orbits of test particles, quite unlike anything that occurs in a Newtonian or Schwarzschild field, also arises. In the fifth chapter the Kinnersley class IV metrics are considered. These metrics, which in their simplest form have been known for some time, present serious problems and no interpretations have been suggested. Our discussion is essentially exploratory and the information that does emerge takes the form of suggestions rather than conclusions. Intrinsically the metrics give the impression that interesting results should be obtainable since they are asymptotically flat in certain directions. However the case that we have dealt with does not appear to represent a radiation metric.
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  • Date Issued: 1973

The development of native policy in the Transkei and in Glen Gray between 1870 and 1900

  • Authors: Griffiths, M S
  • Date: 1939
  • Subjects: Transkei (South Africa) -- History , Black people -- South Africa -- Legal status, Laws, etc. -- South Africa -- History
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: vital:2607 , http://hdl.handle.net/10962/d1012098 , Transkei (South Africa) -- History , Black people -- South Africa -- Legal status, Laws, etc. -- South Africa -- History
  • Description: The Transkeian Territories extend over a stretch of 17000 square miles between the north eastern border of the Cape Colony and the southern border of Natal. In 1870 this was an exclusively Native area ; inhabited by some half million natives tribally organised under independent chiefs and grouped into racial entities according to origln; customs, and language dialects.
  • Full Text:
  • Date Issued: 1939
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