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A synecological study of the East London coast dune forests

- Burns, Michael Edmund Reid

Authors: Burns, Michael Edmund Reid
Date: 1987
Subjects: Sand dune plants -- South Africa , Sand dune ecology -- South Africa
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4241 , http://hdl.handle.net/10962/d1006134 , Sand dune plants -- South Africa , Sand dune ecology -- South Africa
Description: Quantitative community descriptions, based on point quarter sample data, are made for a number of dune forest units along the East London coast. These are supported by multivariate classifications and ordinations which illustrate the inter community variation between the sampled seaward, landward and dune valley sites. Climax valley forest is floristically most characteristic and can be clearly distinguished from the seaward and landward thicket communities which tend to show a degree of similarity. Within-forest community differences are shown to be more significant than variation along the coast. This appears to indicate that climoedaphic gradients established laterally to the coast induce a greater floristic response than the rainfall gradient within the study area. The state of developnent within the dune soil profile and the rate and effect of salt spray deposition are considered to be important factors influencing dune forest succession and are discussed in some detail. An overview of certain other climatic variables as well as the geological features within the study area is also given. A phenology study of the dune forest, scrub-thicket and strand plant cornnunities shows some general patterns of flowering and fruiting phenorhythms. Although much variation was observed, there appears to be a bimodal hyperactive phenophase response which is thought to be related to rainfall or periods of favourable soil moisture conditions. A brief discussion of some of the positive and negative human influences on the coastline is given. This includes a description of the management activities carried out in the area as well as the demands placed on ·the coastal resource.
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A taxonomic revision of the genus Synodontis (Pisces, Mochokidae) in Southern Africa

- White, Peter Nevins

Authors: White, Peter Nevins
Date: 1987
Subjects: Mochokidae -- Africa, Southern -- Classification , Synodontis -- Africa, Southern -- Classification
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:5193 , http://hdl.handle.net/10962/d1001969 , Mochokidae -- Africa, Southern -- Classification , Synodontis -- Africa, Southern -- Classification
Description: The alpha taxonomy of the southern African Synodontis is reviewed, based on the analysis of 48 characters. The previously descriptive characters of barbel branching and humeral process shape are compared by various quantitative methods. The variation in colour pattern is recorded with the aid of detailed line drawings. The definitions of head length, head width and humeral process length are altered slightly from their traditional descriptions to ensure greater consistency and precision in measurement. New characters include the size of the caudal fork, the number, shape and arrangement of the premaxillary teeth, and two measurements between the cranium and pectoral girdle. Both uni- and bivariate methods are used to record and compare the intraspecific variation of each character. Principal components analysis of 19 morphometric characters is used to assess the degree of similarity of nine allopatric populations of S. zambezensis. Ten species are recognized from the study area, two of which are described as new: S. nebulosus Peters 1852, S. zambezensis Peters 1852, S. nigromaculatus Boulenger 1905, S. njassae Keilhack 1908, S. woosnami Boulenger 1911, S. macrostigma Boulenger 1911, S. leopardinus Pellegrin 1914, S. thamalakanensis Fowler 1935, S. macrostoma sp.n. and S.vanderwaali sp.n. A key to their identification is provided. Characters are discussed in terms of their contribution to the identification of the southern African species and, where possible, suggestions made concerning the value of these characters to the taxonomy of the genus as a whole. The rejection of certain characters previously used in Synodontis keys is discussed and alternatives proposed. The state of southern African Synodontis taxonomy is assessed and recommendations for future research are given
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An analysis of problems arising out of English medium instruction of pupils in ten Ciskeian schools, with particular reference to geography in standard eight

- Weimann, Alan Gilbert

Authors: Weimann, Alan Gilbert
Date: 1987
Subjects: Geography -- Study and teaching (Secondary) -- South Africa -- Ciskei , Language and education -- South Africa -- Ciskei , Native language and education -- South Africa -- Ciskei , Students, Black -- Education -- South Africa -- Ciskei , Language arts -- South Africa -- Ciskei
Language: English
Type: Thesis , Masters , MEd
Identifier: vital:1342 , http://hdl.handle.net/10962/d1001408
Description: Pupils in the Republic of South Africa in the T.B.V.C. States (Transkei, Bophuthatswana, Venda and Ciskei) are expected to commence study in all school subjects, except the first language (Xhosa, Tswana, Venda etc.) and the third language (Afrikaans), through the medium of English at the Std 3 level. English thus is the official medium of instruction for the greater part of the pupil's school experience. All examinations in all subjects (except those mentioned above) are set and answered through the medium of English. School textbooks from Std 3 upwards, in all subjects, are written in English. It is fairly safe to assert, therefore, that English should be the language life of the Higher Primary and Secondary School classroom. In 1953 a UNESCO report of proceedings of a conference held in 1951 maintained that the best medium for teaching a pupil was that of the mother-tongue. The report pleaded for mother-tongue instruction to be extended to as late a stage as possible in a pupil's school life (UNESCO 1953). While such a plea may be grounded on sound psychological and pedagogical reasoning, it is often ignored because of the realities existing within the educational system. The R.S.A. and the T.B.V.C. states are a case in point for as I have already mentioned, examinations, textbooks, and for that matter tertiary education at the post-matriculation level, all employ English as instructional medium. Pragmatism carries the day and the black pupil is compelled to use English. Other factors applicable to the South African context are the existence of many different ethnic groups, each with its own language, and the fact that a shortage of qualified and experienced teachers in many subjects and different levels within the schools has meant that often teachers whose first language is English are involved in teaching pupils from these various language groups
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An empirical phenomenological study of happiness

- Parker, Peter Burns

Authors: Parker, Peter Burns
Date: 1987
Subjects: Happiness
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:2912 , http://hdl.handle.net/10962/d1002077
Description: The aim of this study was to investigate man's attunement when happy. Having established a question which would elicit actual experiences of this phenomenon, the researcher collected sixty-four written accounts of the experience. Of these he chose the twelve psychologically richest accounts and, having interviewed each of these twelve subjects to push their written descriptions to their limits, he analysed the resulting protocols using an empirical phenomenological method. The general structure of the experience of happiness suggested that happiness emerged as a special openness against a background where individuals were less than happy. During happiness there is a breaking through the bonds of the individual's mundane, everyday disclosure of the world. It transports the individual to an existence in which the ruptures which form part of man's lived relationships to himself, to his fellowman, to the world and to life itself are healed, and in which life is lived in increased harmony with all. There is a coming home to the self, a move toward wholeness which is enlivened bodily by a radiating vibrancy (often a tingling lightness and brightness), as the individual expands with energy, power, self-confidence and mastery, and rises above the troubles of life. This structure of happiness was dialogued with the writing of existential philosophers and psychologists, psychoanalysts and humanists
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An intelligent computer-based tutor for elementary mechanics problems

- Oberem, Graham Edmund

Authors: Oberem, Graham Edmund
Date: 1987
Subjects: Physics -- Programmed instruction Physics -- Computer-assisted instruction
Language: English
Type: Thesis , Doctoral , PhD
Identifier: vital:5444 , http://hdl.handle.net/10962/d1001997
Description: ALBERT, an intelligent problem-solving monitor and coach, has been developed to assist students solving problems in one-dimensional kinematics. Students may type in kinematics problems directly from their textbooks. ALBERT understands the problems, knows how to solve them, and can teach students how to solve them. The program is implemented in the TUTOR language and runs on the Control Data mainframe PLATO system. A natural language interface was designed to understand kinematics problems stated in textbook English. The interface is based on a pattern recognition system which is intended to parallel a cognitive model of language processing. The natural language system has understood over 60 problems taken directly from elementary Physics textbooks. Two problem-solving routines are included in ALBERT. One is goal-directed and solves the problems using the standard kinematic equations. The other uses the definition of acceleration and the relationship between displacement and average velocity to solve the problems. It employs a forward-directed problem-solving strategy. The natural language interface and both the problem-solvers are fast and completely adequate for the task. The tutorial dialogue system uses a modified version of the natural language interface which operates in a two-tier fashion. First an attempt is made to understand the input with the pattern recognition system, and if that fails, a keyword matching system is invoked. The result has been a fairly robust language interface. The tutorial is driven by a tutorial management system (embodying a tutorial model) and a context model. The context model consists of a student model, a tutorial status model and a dynamic dialogue model. ALBERT permits a mixed initiative dialogue in the discussion of a problem. The system has been tested by Physics students in more than 80 problemsolving sessions and the results have been good. The response of the students has been very favourable
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An investigation into the dimensions underlying the success and failure of new consumer products in South Africa

- Tucker, Alison

Authors: Tucker, Alison
Date: 1987
Subjects: Consumer behavior -- South Africa , Consumer satisfaction , New products -- South Africa , Marketing -- South Africa
Language: English
Type: Thesis , Masters , MCom
Identifier: vital:1190 , http://hdl.handle.net/10962/d1004448
Description: From Introduction: While companies in their initial stages may well produce only one product, most established companies produce a number of products. Reference can therefore be made to their product mixes which serve as their source of revenues and profits. The product mix must be carefully planned. Inherent in such planning is the monitoring of the mix to determine whether or not it strikes a good balance in terms of factors such as sales growth, sales stability and profitability. The product mix must be optimal vis-a-vis the opportunities and threats present in the external environment at any point in time. Since the latter changes over time, so too should the product mix change in order to maintain the required balance between the environment and the product mix, as well as the required balance in terms of sales growth, sales stability and profitability.
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Anorogenic alkaline ring-type complexes of the Damaraland Province, Namibia, and their economic potential

- Potgieter, J E

Authors: Potgieter, J E
Date: 1987
Subjects: Alkalic igneous rocks -- Namibia
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4907 , http://hdl.handle.net/10962/d1001567
Description: Anorogenic alkaline ring-type complexes form within continental plate settings. Alkaline magmatism is derived from the upper mantle, in which mantle metasomatism plays an important part, as well as from partial melting of the lower crust. Radial and concentric fractures develop during the ascent of alkaline magma. Extrusion of basic and felsic magma takes place along these fractures with felsic volcanics building-up central volcanoes. As a result of emptying of the magma chamber, the superstructure of the volcano collapses and a caldera is formed. During the caldera stage syenitic and granitic material are intruded into ring fractures. Alkaline ring-type complexes may be classified as (i) alkaline qranite and syenite-type and (ii) carbonatite and undersaturated-type. These ring-type complexes occur as distinct igneous provinces. Some major provinces occur in Brazil, Corsica, Namibia, Nigeria, Norway, Saudi-Arabia and Sudan. In Namibia the Damaraland igneous province is of Mesozoic aqe and it contains 15 alkaline ring-type complexes . These complexes are situated along north-eastern trends which correspond to transform directions of the South Atlantic. During the opening of the South Atlantic (Gondwana breakup) Pan-African age lineaments were reactivated which allowed emplacement of anorogenic alkaline magmatism. A zonation of alkaline granite and syenitetype in the west and carbonatite and undersaturated-type ring-complexes in the east correlates with down- and upwarp axes parallel to the line of Gondwana fragmentation. Alkali- and H⁺-metasomatism is related to the alkaline and syenite-type whereas alkali metasomatism (fenitization) is associated with carbonatite and undersaturated-type ring-complexes. Sn, W and Ta mineralization is associated with alkaline granites of some of the alkaline granite and syenite-type ring-complexes. Fe, F, PO₄ , Nb, Th, REE, Sr, Zn and Pb mineralization is associated with carbonatite complexes. Potential exists for: (i) porphyry Cu-Mo and epithermal-type (Au, Ag, Pt-metals, base metals) mineralization in the alkaline granite and syenite-type ring-complexes and (ii) disseminated Cu, Au, Aq and Pt-metals in carbonatite and undersaturated-type ring-complexes
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Aspects of brutality : anxious concepts in sculpture since 1950

- Lang, Graham Charles

Authors: Lang, Graham Charles
Date: 1987
Subjects: Sculpture, Modern -- 20th century Violence in art
Language: English
Type: Thesis , Masters , MFA
Identifier: vital:2484 , http://hdl.handle.net/10962/d1012724
Description: It would be wrong to suggest that this essay is in any way a comprehensive study of brutal sculpture. Certainly not. There have been many deliberate omissions for reasons which become clear in the text. Very briefly, omissions of certain sculptors and their work are largely due to my wish to avoid repetitive ideas and images. My view in this essay is to provide a cross-section of ideas and works, whereby the reader might gain some insight into the varied nature of this kind of sculpture. Thus, there seemed very little need for endless similarities of concept and expression. It was the diversity which I felt was important. The chapter which discusses concepts of beauty is also not a comprehensive study. This subject demands more than a humble essay to do it any justice. However, my reasons for touching the vague and controversial outline of these concepts were, primarily, to suggest that notions of beauty as the sole criterion in the judgement of art are too limiting, and, consequently, to introduce the concept of vitalism, which I believe is more valid. Finally, I wish to mention the personal motive behind this work. Over the years, I have witnessed the emergence of brutal elements in my own work, which I found disturbing at times. I have never been able to answer satisfactorily the criticism I've received. All I knew was that these things came from a very deep source. It is with this in mind that I embarked on this project, hoping to achieve two things. Firstly, to provide an objective survey of an important development in art, and, secondly , to answer some of my criticism. Foreword, p. 1.
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Aspects of the anaerobic digestion of wattle tannins

- Hurlow, Elton Lloyd

Authors: Hurlow, Elton Lloyd
Date: 1987
Subjects: Tanneries -- Waste disposal
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4300 , http://hdl.handle.net/10962/d1004909
Description: The aqueous extract from the bark of the black wattle tree, (Acacia mearnsii De Wild)(1), is used extensively in the tanning industry for the production of sole and other heavy leathers as well as in lighter leathers and skins. The commercial extract is available in an easily dissolvable spray dried form and in deference to its genus name Mimosaceae is referred to in the trade as Mimosa(3). Mimosa extract consists primarily of high molecular weight polymeric flavonoid units which also constitutes the active tanning ingredient. Lower phenolics, gums and sugars or the so called "non-tannins" are present as impurities and contribute up to 40% to (3 ) the total mass of the extract.
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Aspekte van die erotiek in enkele romans van André P Brink

- Milton, Laura

Authors: Milton, Laura
Date: 1987
Subjects: Brink, André P (André Philippus), 1935-2015 -- Criticism and interpretation
Language: Afrikaans
Type: Thesis , Masters , MA
Identifier: vital:3571 , http://hdl.handle.net/10962/d1002094 , Brink, André P (André Philippus), 1935-2015 -- Criticism and interpretation
Description: Die doel van hierdie studie is om ondersoek in te stel na aspekte van die erotiek in enkele romans van André P. Brink. Die studie bestaan uit twee afsonderlike dele: genoem 'teorie' en 'praktyk'. In die teoretiese deel sal daar eerstens kortliks gekyk word na 'n definiering van enkele kernbegrippe - onder andere 'seksualiteit', 'erotiek' en 'pornografie'. Daar word nie gepoog om algemeen-geldende definisies te formuleer nie, maar eerder definisies wat nuttig is vir die doel van hierdie studie. Daarna sal ondersoek ingestel word na Brink self se teoretiese formulerings met betrekking tot die erotiek. In die tweede deel sal gekonsentreer word op die erotiek in die praktyk van Brink se romans. Eerstens sal die keuse van romans verduidelik word en dan sal daar oorgegaan word tot 'n bespreking van drie romans: Die ambassadeur (1963), Kennis van die Aand (1973) en 'n Oomblik in die wind (1975). Ten slotte sal die gevolgtrekkings van die studie kortliks saamgevat word (Introduction, p. 1)
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Black entrepreneural experience and practice in Port Elizabeth

- Davies, William J

Authors: Davies, William J
Date: 1987
Subjects: Africans -- Commerce Port Elizabeth (South Africa) -- Commerce
Language: English
Type: Book , Text
Identifier: http://hdl.handle.net/10962/2292 , vital:20273 , ISBN 086810163X
Description: Black business development in South Africa has been restricted by discriminatory legislation, regulation and custom for many years. Black entrepreneurs have been deliberately and systematically excluded from access to economic opportunities which might have facilitated their participation in moulding the national economy. This situation stemmed from a widely-held White view that Blacks should not have a permanent stake in non- "homeland" South African towns and that the interests of White business should be protected (Hart, 1972). Given these circumstances, Black business has not developed and diversified with the growth of capitalism in South Africa. In fact, capitalism's predominant interest in the Black population has been as labour units, not as partners in economic ventures. Those Blacks in business who have grown, and have established relatively successful business ventures, have done so despite the obstacles devised by the system. The successful Black businessman, therefore, reflects a particular brand of entrepreneurship characterised by determination, tenacity and a capacity to adapt over and above that which is usually required for survival in a competitive environment. The nature and scale of businesses to which Blacks were allowed access was limited to those which provide the daily domestic necessities of urban Black communities; ie, mainly convenience retailing (Davies, 1972). Black businessmen were also denied the right to acquire land in urban areas and such businesses as were allowed had to be conducted from rented premises. Thus, Black experience of crucial elements of entrepreneural development (such as locational choice, market selection and capital formation through property ownership) has been minimal, and so conditional that the aspirations of all but the most determined businessmen have been severely inhibited. Even the most competent Black entrepreneur has not been able to stray very far from the mould of "trader", which has become the stereotype of Black business. Hence, most business ventures in urban Black townships are associated with convenience retailing and service activities, mainly of modest proportions and not necessarily a reflection of the individual's business choice. The underdeveloped status of Black entrepreneurship in South Africa is thus due entirely to their exclusion from opportunities to gain experience, to take risks and to compete. The view of Blacks as not having an interest in, or an aptitude for, business is little more than a transparent rationalisation for institutionalised racism. The apparent lack of competitiveness amongst Blacks is the result of a complex set of inequities imposed over decades of "relative deprivation in terms of upbringing, nutritional standards, education and training, medical services, entrepreneural and professional opportunities, and horizontal and vertical mobility" (Leatt et al, 1986). It is against this background that the situation of Black business in Port Elizabeth must be seen. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
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Changing attitudes of Black South Africans toward the United States of America

- Hirschmann, David

Authors: Hirschmann, David
Date: 1987
Subjects: Public opinion -- South Africa Black people -- South Africa -- Attitudes United States -- Relations -- South Africa South Africa -- Relations -- United States United States -- Foreign public opinion, South African
Language: English
Type: Book , Text
Identifier: http://hdl.handle.net/10962/1888 , vital:20236 , ISBN 0868101494
Description: There is a tendency to term a major civil uprising a "revolution" only after it has succeeded to come close to success. While the final outcome of the present strife in South Africa remains uncertain, its dimensions amount to a revolution: in terms of breadth and depth of hostility, the determination to demonstrate the express that hostility, the period of sustained violence and disruption, the suffering involved and the acceptance of that suffering as essential to change, and the uncompromising and the increasingly fundamental objectives of the movement. The conflict has, of course, been there for centuries. The movement for change has been building up for most of this century. It has never been allowed to gain effective momentum. The present situation is different: it represents a broad, serious and sustained threat to the continuation of white rule. In accordance with the simple model set out above, the white rulers are pro-Western (President Botha has made much of this), capitalist (and of this too) and receive effective backing from domestic and international corporations, and from major Western Governments, such as the United Kingdom, the United States, West Germany and Japan. There are, however, certain specifics of the South African situation, and of its relationship with the United States, which must be kept in mind. For a start, the United States is not the ex-colonial power (as in the Philippines), nor is it the historical regional power (as in Latin America) nor the dominant proximate power (as in Nicaragua). Second, race is so important an element in this conflict, that notions of class exploitation and imperialism, as analytically valid as they may be, may have a more difficult time in taking hold of the minds of black South Africans. Third, and related to race, the United States experience with the civil rights movement may be seen by some blacks as having been successful, and therefore indicative of a political system worthy of respect. Fourth, the diplomatic activities of the United States under leaders like Kennedy and Carter may have left a residue of respect for United States intentions, and a readiness to distinguish Reagan's Constructive Engagement from an entity called "the United States Government", or from "the United States" as a whole. People may also distinguish between more or less progressive corporations, and between those companies and the United States Government. Further, for decades United States entertainment and mass media have strengthened bonds of music, humour, fashions and fun: there is a long-standing mass cultural connection between black South Africans and the United States which may influence evolving attitudes. There is no comparable connection with Eastern countries. Through strict censorship and control of education, black South Africans will have been denied the material on which to build a full understanding of the East. A number of leading blacks have trained or been on extended visits to Western countries. A number of them are religious leaders, such as Boesak and Tutu, who, while angry with the West, are not pro-communist in any form. The principal liberation organization, the African National Congress (ANC), emphasises a rather open-ended and undefined socialism, contains divergent ideological threads, and continues to court Western support. Furthermore, inside the country, radicalism may be more concerned with "black" radicalism than with "class" radicalism. It is also uncertain what lessons South African blacks have learned from the twenty-five years of domestic and foreign policy experience of independent Africa, nor how they assess the Mozambican, Angolan and Zimbabwean revolutionary and post-revolutionary programe, nor do we know how all of this effects the vision black South Africans hold of post-apartheid South Africa's future and of its place in the world. The purpose of the research was to begin to try to find answers to some of these questions, and in particular to investigate attitudes of black South African towards the United States of America; more particularly to observe if changes in attitude were taking place as the current prolonged period of crisis takes its course. , Digitised by Rhodes University Library on behalf of the Institute of Social and Economic Research (ISER)
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COSATU constitution as amended at COSATU 2nd National Congress l987

- COSATU

Authors: COSATU
Date: 1987
Subjects: COSATU
Language: English
Type: text
Identifier: http://hdl.handle.net/10962/109708 , vital:33182
Description: We the Trade Union representatives here present firmiy commit ourselves to a unified democratic South Africa, free of oppression and economic exploitation. We believe that this can only be achieved under the leadership of a united working class. Our history has taught us that to achieve this goal we will have to carry out the following tasks. To organise the unorganised workers and build effective trade unions based on the democratic organisation of workers in the factories, mines, shops, farms and other workplaces. Organise national industrial trade unions, financed and controlled by their worker members through democratically elected committees. Unify these industrial unions into a national worker controlled federation. Combat the divisions amongst the workers of South Africa and unite them into a strong and confident working class. Encourage democratic worker organisation and leadership in all spheres of our society together with other progressive sectors of the community. Reinforce and encourage progressive international worker contact and solidarity so as to assist one another in our struggles.We call on all those who identify with this commitment to join us and the workers whom we represent as comrades in the struggle ahead. We call on all trade unions to strive to unite their members in their ranks without discrimination and prejudice, and therefore resolve that this federation shall determinedly seek to further and protect the interests of all workers and that its guiding motto shall be the universal slogan of working class solidarity: "AN INJURY TO ONE IS AN INJURY TO ALL".
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CSP-i : an implementation of CSP

- Wrench, Karen Lee

Authors: Wrench, Karen Lee
Date: 1987 , 2013-03-08
Subjects: Synchronization--Computers , Programming languages (Electronic computers)
Language: English
Type: Thesis , Masters , MSc
Identifier: vital:4579 , http://hdl.handle.net/10962/d1003124 , Synchronization--Computers , Programming languages (Electronic computers)
Description: CSP (Communicating Sequential Processes) is a notation proposed by Hoare, for expressing process communication and synchronization. Although this notation has been widely acclaimed, Hoare himself never implemented it as a computer language. He did however produce the necessary correctness proofs and subsequently the notation has been adopted (in various guises) by the designers of other concurrent languages such as Ada and occam. Only two attempts have been made at a direct and precise implementation of CSP. With closer scrutiny, even these implementations are found to deviate from the specifications expounded by Hoare, and in so doing restrict the original proposal. This thesis comprises two main sections. The first of these includes a brief look at the primitives of concurrent programming, followed by a comparative study of the existing adaptations of CSP and other message passing languages. The latter section is devoted to a description of the author's attempt at an original implementation of the notation. The result of this attempt is the creation of the CSP-i language and a suitable environment for executing CSP-i programs on an IBM PC. The CSP-i implementation is comparable with other concurrent systems presently available. In some aspects, the primitives featured in CSP-i provide the user with a more efficient and concise notation for expressing concurrent algorithms than several other message-based languages, notably occam. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
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