Obedient daughter, silenced witch: the hysteric in Freudian psychoanalysis
- Authors: Roux, Catharina
- Date: 1989
- Subjects: Freud, Sigmund, 1856-1939 -- Criticism and interpretation , Hysteria , Psychoanalysis , Seduction
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3117 , http://hdl.handle.net/10962/d1004637 , Freud, Sigmund, 1856-1939 -- Criticism and interpretation , Hysteria , Psychoanalysis , Seduction
- Description: This study explores the theoretical consequences of Freud's renunciation of the seduction theory. The dissertation defends the thesis that the seduction theory was shaped as much by Freud's adherence to the nomonological model as by the empirical evidence of child sexual abuse. A renunciation of the seduction theory was inevitable, not because the accounts of the daughters were lies, but because the methodology was inappropriate. The nomonological model obscured the emotional structure of the nuclear family in which the structure itself, through which sexuality emerged, directed the girl's entrance into womanhood and caused the woman's dis-ease. Freud's methodology forced him to isolate an event as cause of an illness and to attribute the event to an agent. The universal perversity of the Victorian father thus became the central theme around which an explanation of a female disease was built. When this theme became theoretically untenable, Freud renounced the seduction theory and, still using the nomonological model, built up the construct of the Oedipus complex in which the father was vindicated. In order to exonerate the father, the transactions through which the child's libido developed were represented as originating in inherent tendencies. As a result, the hierarchical nature of the interaction between parent and child was distorted, and this led to the formulation of the distinction between real events and fantasies as a basic premise on which the difference between the pleasure principle and the reality principle rests. This formulation gave rise to the sharp duality between fantasy and reality which eventually compelled him to separate psychic reality and social reality. The theoretical structure built on this duality could not but fuse hysteria, masochism and "normal" femininity into an explanation of the female state, and obscure the essential social relations between men and women which were structured in terms of dominance and submission. The thesis traces the journey from the perverted father as cause of a female disease, hysteria, to the theoretical conjunction of masochism and hysteria. It comes to the conclusion that Freud's model is unable to explain the self-mutilation of the hysteric; nor is it capable of explaining the hysteric's refusal to participate in the circuit of symbolic exchanges which constituted Victorian society. The study further attempts to understand hysteria in terms of the complex interlacing of fact and fantasy and tries to show that fantasy was rooted in the facts of Victorian culture.
- Full Text:
- Date Issued: 1989
- Authors: Roux, Catharina
- Date: 1989
- Subjects: Freud, Sigmund, 1856-1939 -- Criticism and interpretation , Hysteria , Psychoanalysis , Seduction
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3117 , http://hdl.handle.net/10962/d1004637 , Freud, Sigmund, 1856-1939 -- Criticism and interpretation , Hysteria , Psychoanalysis , Seduction
- Description: This study explores the theoretical consequences of Freud's renunciation of the seduction theory. The dissertation defends the thesis that the seduction theory was shaped as much by Freud's adherence to the nomonological model as by the empirical evidence of child sexual abuse. A renunciation of the seduction theory was inevitable, not because the accounts of the daughters were lies, but because the methodology was inappropriate. The nomonological model obscured the emotional structure of the nuclear family in which the structure itself, through which sexuality emerged, directed the girl's entrance into womanhood and caused the woman's dis-ease. Freud's methodology forced him to isolate an event as cause of an illness and to attribute the event to an agent. The universal perversity of the Victorian father thus became the central theme around which an explanation of a female disease was built. When this theme became theoretically untenable, Freud renounced the seduction theory and, still using the nomonological model, built up the construct of the Oedipus complex in which the father was vindicated. In order to exonerate the father, the transactions through which the child's libido developed were represented as originating in inherent tendencies. As a result, the hierarchical nature of the interaction between parent and child was distorted, and this led to the formulation of the distinction between real events and fantasies as a basic premise on which the difference between the pleasure principle and the reality principle rests. This formulation gave rise to the sharp duality between fantasy and reality which eventually compelled him to separate psychic reality and social reality. The theoretical structure built on this duality could not but fuse hysteria, masochism and "normal" femininity into an explanation of the female state, and obscure the essential social relations between men and women which were structured in terms of dominance and submission. The thesis traces the journey from the perverted father as cause of a female disease, hysteria, to the theoretical conjunction of masochism and hysteria. It comes to the conclusion that Freud's model is unable to explain the self-mutilation of the hysteric; nor is it capable of explaining the hysteric's refusal to participate in the circuit of symbolic exchanges which constituted Victorian society. The study further attempts to understand hysteria in terms of the complex interlacing of fact and fantasy and tries to show that fantasy was rooted in the facts of Victorian culture.
- Full Text:
- Date Issued: 1989
An investigation into the nature and extent of erosion and sedimentation in the Maqalika Dam catchment, Maseru
- Authors: Ntsaba, 'Mankone 'Mabataung
- Date: 1990
- Subjects: Erosion -- Lesotho Sedimentation and deposition -- Lesotho Land use -- Lesotho -- History River sediments -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4799 , http://hdl.handle.net/10962/d1001899
- Description: The study investigates the nature and extent of erosion and deposition in the Maqalika catchment, Maseru. Components of the study include (i) the re-construction of erosion and land use history in the catchment from 1961 to 1985, (li) determination of dominant factors or combinations of factors responsible for the observed erosion distribution at each date, (iii) the identification and evaluation of erosion and deposition features, and their spatial and temporal variations, and (iv) identification of socia-economic problems associated with observed erosion and deposition. Methods employed for the re-construction of erosion and land use history include the use of sequential aerial photography of 1961, 1979 and 1985, orthophoto maps and review of literature from past studies. It has been possible to map erosion and land use for the three time periods pinpointing areas of major change. Results are presented in map form showing the spatial distribution of each erosion class and each land use category. It was however not possible to derive any meaningful relationship between erosion distribution and land use, on the aforementioned maps. The only observation made from the comparison of the maps is that erosion degree and distribution sometimes changes with land use, while land use sometimes changes in response to erosion. Major land use changes are the conversion of agricultural land to urban land use, and grazing land. Due to the mnlti-dimensional nature of soil erosion, hand 'actor analysis was employed to determine which factors or combinations of factors were dominant at each date. Despite the extensive research on the various factors affecting erosion such as those used for the USLE and SLEMSA there is a growing uncertainty as to which factors are more important to erosion. Soil erodibility has been found to be a component of the major controlling factor combinations in all three periods under study. At each date erodibility combined with a number of other factors determined the observed erosion distribution. As suggested by Mosley (1980), Cambell (1985) and Coleman and Scatena (1986) sediment from a catchment is derived principally from spatially limited portions of the catchment. Likewise eroded sediment becomes deposited in spatially limited areas with special characteristics which encourage deposition. Aerial photographic survey aided by ground survey and oblique photographs were employed to identify sediment sources and sinks within the catchment. Some sediment sources are fIxed such as gully floors and sides, while some change location from time to time such as construction sites. An evaluation of portions of the catchment for their ability to supply and deliver sediment has shown that the most eroded areas are not the most active sediment sources. Sediment yield is limited by either supply or transport. Sediment yield was estimated using reservoir survey data which indicate that there is a high rate of soil loss from the catchment. One flaw of this method as a measure of soil loss is that it treats the measured sediment yield as if it were contributed uniformly from the basin. This method however affords the researcher to estimate minimum erosion rates, taking into account that large amounts of sediment are stored at various places within the catchment. The possible socio-economic consequences of erosion and deposition have been identified. These include loss of cropland, destruction of roads and building sites which require methods of reclamation, sedimentation of small reservoirs and ponds, and the formation of gully bottom fills which are potential sediment sources. Conservation measures presently applied in the catchment are assessed and found to be irrelavant to the present erosion problem. Data from the reservoir survey revealed that the estimated rate of soil loss is more important to on-site erosion damage than to off-site damage in the form of the sedimentation of Maqalika reservoir. Appropriate conservation measures such as those suggested by Amimoto (1981) would be relevant to the study area, however the main constraint in their implementation would be lack of legislation and the absence of a sound land use policy. It is therefore concluded that the present land use situation which does not take into consideration the physical constraints of the catchment is partly responsible for accelarated erosion in the catchment.
- Full Text:
- Date Issued: 1990
- Authors: Ntsaba, 'Mankone 'Mabataung
- Date: 1990
- Subjects: Erosion -- Lesotho Sedimentation and deposition -- Lesotho Land use -- Lesotho -- History River sediments -- Lesotho
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4799 , http://hdl.handle.net/10962/d1001899
- Description: The study investigates the nature and extent of erosion and deposition in the Maqalika catchment, Maseru. Components of the study include (i) the re-construction of erosion and land use history in the catchment from 1961 to 1985, (li) determination of dominant factors or combinations of factors responsible for the observed erosion distribution at each date, (iii) the identification and evaluation of erosion and deposition features, and their spatial and temporal variations, and (iv) identification of socia-economic problems associated with observed erosion and deposition. Methods employed for the re-construction of erosion and land use history include the use of sequential aerial photography of 1961, 1979 and 1985, orthophoto maps and review of literature from past studies. It has been possible to map erosion and land use for the three time periods pinpointing areas of major change. Results are presented in map form showing the spatial distribution of each erosion class and each land use category. It was however not possible to derive any meaningful relationship between erosion distribution and land use, on the aforementioned maps. The only observation made from the comparison of the maps is that erosion degree and distribution sometimes changes with land use, while land use sometimes changes in response to erosion. Major land use changes are the conversion of agricultural land to urban land use, and grazing land. Due to the mnlti-dimensional nature of soil erosion, hand 'actor analysis was employed to determine which factors or combinations of factors were dominant at each date. Despite the extensive research on the various factors affecting erosion such as those used for the USLE and SLEMSA there is a growing uncertainty as to which factors are more important to erosion. Soil erodibility has been found to be a component of the major controlling factor combinations in all three periods under study. At each date erodibility combined with a number of other factors determined the observed erosion distribution. As suggested by Mosley (1980), Cambell (1985) and Coleman and Scatena (1986) sediment from a catchment is derived principally from spatially limited portions of the catchment. Likewise eroded sediment becomes deposited in spatially limited areas with special characteristics which encourage deposition. Aerial photographic survey aided by ground survey and oblique photographs were employed to identify sediment sources and sinks within the catchment. Some sediment sources are fIxed such as gully floors and sides, while some change location from time to time such as construction sites. An evaluation of portions of the catchment for their ability to supply and deliver sediment has shown that the most eroded areas are not the most active sediment sources. Sediment yield is limited by either supply or transport. Sediment yield was estimated using reservoir survey data which indicate that there is a high rate of soil loss from the catchment. One flaw of this method as a measure of soil loss is that it treats the measured sediment yield as if it were contributed uniformly from the basin. This method however affords the researcher to estimate minimum erosion rates, taking into account that large amounts of sediment are stored at various places within the catchment. The possible socio-economic consequences of erosion and deposition have been identified. These include loss of cropland, destruction of roads and building sites which require methods of reclamation, sedimentation of small reservoirs and ponds, and the formation of gully bottom fills which are potential sediment sources. Conservation measures presently applied in the catchment are assessed and found to be irrelavant to the present erosion problem. Data from the reservoir survey revealed that the estimated rate of soil loss is more important to on-site erosion damage than to off-site damage in the form of the sedimentation of Maqalika reservoir. Appropriate conservation measures such as those suggested by Amimoto (1981) would be relevant to the study area, however the main constraint in their implementation would be lack of legislation and the absence of a sound land use policy. It is therefore concluded that the present land use situation which does not take into consideration the physical constraints of the catchment is partly responsible for accelarated erosion in the catchment.
- Full Text:
- Date Issued: 1990
Observation and processing of 2.3 GHz radio astronomy survey data
- Authors: Jonas, Justin Leonard
- Date: 1983 , 2013-04-15
- Subjects: Radio astronomy , Southern sky (Astronomy)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5505 , http://hdl.handle.net/10962/d1007280 , Radio astronomy , Southern sky (Astronomy)
- Description: The results of the second part of the Rhodes University Southern Sky Survey at 2.3GHz are presented. The area surveyed extends from 12hOO to 22hOO right ascension between declinations -63º and -24º. The observation technique and data reduction processes are analyzed. Digital data processing techniques used to enhance and display the data are dicussed. The results show that the Galactic emission extends as far as 40º latitude. Filamentary and loop-like structures are found superimposed on this general emission. Many of these features are unidentified as yet. A large region of emission is found to coincide with the Sco-Cen stellar association. A lower limit for the ionizing flux from the stars in the association is derived. All of the non-confused extragalactic sources with flux densities greater than O.5Jy are listed. The flux densities of these sources have been measured and any possible extended features are noted. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
- Full Text:
- Date Issued: 1983
- Authors: Jonas, Justin Leonard
- Date: 1983 , 2013-04-15
- Subjects: Radio astronomy , Southern sky (Astronomy)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5505 , http://hdl.handle.net/10962/d1007280 , Radio astronomy , Southern sky (Astronomy)
- Description: The results of the second part of the Rhodes University Southern Sky Survey at 2.3GHz are presented. The area surveyed extends from 12hOO to 22hOO right ascension between declinations -63º and -24º. The observation technique and data reduction processes are analyzed. Digital data processing techniques used to enhance and display the data are dicussed. The results show that the Galactic emission extends as far as 40º latitude. Filamentary and loop-like structures are found superimposed on this general emission. Many of these features are unidentified as yet. A large region of emission is found to coincide with the Sco-Cen stellar association. A lower limit for the ionizing flux from the stars in the association is derived. All of the non-confused extragalactic sources with flux densities greater than O.5Jy are listed. The flux densities of these sources have been measured and any possible extended features are noted. , KMBT_363 , Adobe Acrobat 9.53 Paper Capture Plug-in
- Full Text:
- Date Issued: 1983
Blogging, journalism and the public sphere: assessing the value of the 'blogosphere' as a new form of the public sphere : a case study of the Mail & Guardian Online's Blogmark
- Authors: Sibanda, Fortune
- Date: 2006
- Subjects: Habermas, Jürgen -- Criticism and interpretation , Mail & Guardian , Blogs -- South Africa , Online journalism -- South Africa , Electronic newspapers -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3483 , http://hdl.handle.net/10962/d1002938 , Habermas, Jürgen -- Criticism and interpretation , Mail & Guardian , Blogs -- South Africa , Online journalism -- South Africa , Electronic newspapers -- South Africa
- Description: The study seeks to investigate whether weblogs can act as virtual public spheres, where people can meet to discuss issues of interest to them. It uses the Mail & Guardian Online’s Blogmark as a case study. Weblogs – highly interactive online journals comprised of links and postings in reverse chronological order – are fast becoming an avenue of choice for many internet users wanting to share opinions and news with others online. Because of their unique read-and-write characteristics, some have equated them to the 18th century coffeehouses, around which the early forms of citizen involvement in public affairs began in early capitalist Europe. Despite their growing popularity, however, not much scholarly work has been dedicated to the practice of blogging in Africa, and particularly in South Africa. The study’s theoretical framework is drawn from Jürgen Habermas’s concept of the public sphere. While noting some of the criticisms of the Habermasian model, it is argued that the concept is instrumental in our understanding of the relationship between the media and democracy. The study, however, adopted a re-worked model of the concept of the public sphere. This model argues for the need to have a multiplicity of public sphericules (instead of one single public sphere as advocated by Habermas), around which individuals can congregate to discuss issues of common concern to them. Using a combination of qualitative content analysis, self-completion questionnaires and a semi-structured interview, the study found Blogmark to be an example of how emerging internet genres such as weblogs can be vehicles of citizen involvement in public life. A range of issues were discussed in the blog, from politics, race and ii i gender issues, to personal anecdotes, relationships, and sex. However, while some posts exhibited high levels of interactivity, with many bloggers joining in to offer their opinions, some read like online monologues. The study argues that although blogging is a practice that is still limited to a few privileged individuals, with the everrising size of the ‘blogosphere’, weblogs such as Blogmark are making a small but not insignificant contribution to the number of voices that can be heard in the public realm.
- Full Text:
- Date Issued: 2006
- Authors: Sibanda, Fortune
- Date: 2006
- Subjects: Habermas, Jürgen -- Criticism and interpretation , Mail & Guardian , Blogs -- South Africa , Online journalism -- South Africa , Electronic newspapers -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3483 , http://hdl.handle.net/10962/d1002938 , Habermas, Jürgen -- Criticism and interpretation , Mail & Guardian , Blogs -- South Africa , Online journalism -- South Africa , Electronic newspapers -- South Africa
- Description: The study seeks to investigate whether weblogs can act as virtual public spheres, where people can meet to discuss issues of interest to them. It uses the Mail & Guardian Online’s Blogmark as a case study. Weblogs – highly interactive online journals comprised of links and postings in reverse chronological order – are fast becoming an avenue of choice for many internet users wanting to share opinions and news with others online. Because of their unique read-and-write characteristics, some have equated them to the 18th century coffeehouses, around which the early forms of citizen involvement in public affairs began in early capitalist Europe. Despite their growing popularity, however, not much scholarly work has been dedicated to the practice of blogging in Africa, and particularly in South Africa. The study’s theoretical framework is drawn from Jürgen Habermas’s concept of the public sphere. While noting some of the criticisms of the Habermasian model, it is argued that the concept is instrumental in our understanding of the relationship between the media and democracy. The study, however, adopted a re-worked model of the concept of the public sphere. This model argues for the need to have a multiplicity of public sphericules (instead of one single public sphere as advocated by Habermas), around which individuals can congregate to discuss issues of common concern to them. Using a combination of qualitative content analysis, self-completion questionnaires and a semi-structured interview, the study found Blogmark to be an example of how emerging internet genres such as weblogs can be vehicles of citizen involvement in public life. A range of issues were discussed in the blog, from politics, race and ii i gender issues, to personal anecdotes, relationships, and sex. However, while some posts exhibited high levels of interactivity, with many bloggers joining in to offer their opinions, some read like online monologues. The study argues that although blogging is a practice that is still limited to a few privileged individuals, with the everrising size of the ‘blogosphere’, weblogs such as Blogmark are making a small but not insignificant contribution to the number of voices that can be heard in the public realm.
- Full Text:
- Date Issued: 2006
A holy people: a study in the ecclesiology of Andrew Murray
- Neethling, Johann Christiaan
- Authors: Neethling, Johann Christiaan
- Date: 1975
- Subjects: Murray, Andrew, 1828-1917 , Nederduitse Gereformeerde Kerk , Nederduitsch Hervormde Kerk van Afrika -- History , Nederduitse Gereformeerde Gemeente Worcester , Nederduitse Gereformeerde Gemeente Bloemfontein , Nederduitse Gereformeerde Gemeente Wellington , Theology, Doctrinal -- South Africa -- History , Church history
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1287 , http://hdl.handle.net/10962/d1013592
- Description: The thesis seeks to show Andrew Murray's growing understanding of what it meant to be the elect of God in contrast to other prevailing notions. In his confrontation with the Trekker communities, the majority of whom were rigid Calvinists, stressing a divine election based on the notions of biological and cultural identity, Murray found little of the holy behaviour which ought to characterize the people of God. The elect should be seen to be the elect by their fruits. Instead there was divisiveness, discrimination, party spirit and other forms of ungodliness. Faced with the immensity of the task in identifying the true Church and building God's people up in holiness, Murray began to sense the necessity of another 'dimension' within the Church's regular means of grace of preaching, the sacraments, and discipline. The revival of 1860, focussed Murray's attention in a new and vital way on the work of the Holy Spirit in breathing new life into the Church and in empowering believers to live lives pleasing to God. The 'indiscriminate' effects of the Holy Spirit's work convinced Murray that the Gospel and thus the Church was not the possession of the white colonist, Dutch or English, but that the black and brown man had an equal claim on the Gospel and as much right to become a member of Christ's Church. Murray's understanding of the Christian life as continual abiding in Christ by the power of the indwelling Holy Spirit meant that the believer came to have the mind of Christ and to partake of His holiness. This holiness evidenced itself in the believer having Christ's concern for the lost. Mission, therefore, became this supreme end of the Church. The struggle with the forces of liberalism raised the new issue that unbelievers could no longer be simply 'heathen blacks' or English but most of all Dutch. The support of the civil courts of those disciplined by the Church brought the whole problem of ecclesiology to the fore and led Murray to the conclusion of the necessary separation of the Church from the State. Murray's discovery that in various ages, nations and Church traditions there were those with the same passionate desire for God' s holiness, led him into an increasing awareness of the catholicity of the Church. True holiness demanded the love and unity of all God's children. Murray's ecclesiology was a biblically-based one at a time when communities were beginning to be formed by other than biblical notions and principles and by a people who were trying to pack more into the notion of a people of God than Scripture gave warrant for. The emphasis for which Murray stood made for an ecclesiology that simply could not be confined.
- Full Text:
- Date Issued: 1975
- Authors: Neethling, Johann Christiaan
- Date: 1975
- Subjects: Murray, Andrew, 1828-1917 , Nederduitse Gereformeerde Kerk , Nederduitsch Hervormde Kerk van Afrika -- History , Nederduitse Gereformeerde Gemeente Worcester , Nederduitse Gereformeerde Gemeente Bloemfontein , Nederduitse Gereformeerde Gemeente Wellington , Theology, Doctrinal -- South Africa -- History , Church history
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1287 , http://hdl.handle.net/10962/d1013592
- Description: The thesis seeks to show Andrew Murray's growing understanding of what it meant to be the elect of God in contrast to other prevailing notions. In his confrontation with the Trekker communities, the majority of whom were rigid Calvinists, stressing a divine election based on the notions of biological and cultural identity, Murray found little of the holy behaviour which ought to characterize the people of God. The elect should be seen to be the elect by their fruits. Instead there was divisiveness, discrimination, party spirit and other forms of ungodliness. Faced with the immensity of the task in identifying the true Church and building God's people up in holiness, Murray began to sense the necessity of another 'dimension' within the Church's regular means of grace of preaching, the sacraments, and discipline. The revival of 1860, focussed Murray's attention in a new and vital way on the work of the Holy Spirit in breathing new life into the Church and in empowering believers to live lives pleasing to God. The 'indiscriminate' effects of the Holy Spirit's work convinced Murray that the Gospel and thus the Church was not the possession of the white colonist, Dutch or English, but that the black and brown man had an equal claim on the Gospel and as much right to become a member of Christ's Church. Murray's understanding of the Christian life as continual abiding in Christ by the power of the indwelling Holy Spirit meant that the believer came to have the mind of Christ and to partake of His holiness. This holiness evidenced itself in the believer having Christ's concern for the lost. Mission, therefore, became this supreme end of the Church. The struggle with the forces of liberalism raised the new issue that unbelievers could no longer be simply 'heathen blacks' or English but most of all Dutch. The support of the civil courts of those disciplined by the Church brought the whole problem of ecclesiology to the fore and led Murray to the conclusion of the necessary separation of the Church from the State. Murray's discovery that in various ages, nations and Church traditions there were those with the same passionate desire for God' s holiness, led him into an increasing awareness of the catholicity of the Church. True holiness demanded the love and unity of all God's children. Murray's ecclesiology was a biblically-based one at a time when communities were beginning to be formed by other than biblical notions and principles and by a people who were trying to pack more into the notion of a people of God than Scripture gave warrant for. The emphasis for which Murray stood made for an ecclesiology that simply could not be confined.
- Full Text:
- Date Issued: 1975
The geology, petrology and geochemistry of the mineralization and hydrothermal alteration at Ongeama, Ongombo and Matchless West Extension, Namibia
- Authors: Moroni, Marilena
- Date: 1991
- Subjects: Geology -- Namibia , Petrology -- Namibia , Geochemistry -- Namibia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5045 , http://hdl.handle.net/10962/d1007693 , Geology -- Namibia , Petrology -- Namibia , Geochemistry -- Namibia
- Description: The Matchless Amphibolite Belt (Damara Orogen, Namibia) hosts several volcanogenic-exhalative, sediment-hosted stratiform cupriferous pyrite deposits. These are thought to be related to submarine volcanism during the early evolutionary stages of a narrow Damaran ocean, the Matchless Trough. The mineralized bodies examined (Ongeama, Ongombo and Matchless West Extension) are deformed and metamorphosed to low-medium grade (greenschist-amphibolite facies). They are associated with metapelite and amphibolite country rocks, and crop out as prominent limonite-rich gossans. The elongated shape of the sulphide bodies suggests a structural control. The mineralization normally consists of a variably developed massive sulphide portion, either quartz-, talc- or amphibole-bearing, and a stratigraphically overlying, extensive horizon of sulphide- and baryte-bearing exhalite (magnetite quartzite and less common talc- and actinolite-bearing schists). Lateral and vertical mineralogical changes within the mineralization match with significant variations in the element distribution. A metamorphosed and deformed alteration pipe, indicating the position of the fluid conduit, can be recognized in association with some ore bodies. The formation of quartz-muscovite and chlorite alteration envelopes (Ongeama, Matchless West Extension) and the presence of subtle mineralogical changes (Ongombo) in the immediate wallrocks, accompanied by extensive redistribution, leaching and introduction of elements from outside, suggest the hydrothermal metasomatic origin of the alteration zones. Element zoning within the mineralized bodies can be related to the original position of the vent, possibly coinciding with the intersection of the axis of the alteration pipe with the sulphide body. Cu, Zn, Au (pro parte) and Mo are enriched proximal to the vent, whereas Pb, Ba, Mn, Ag, Au, Sn, Bi and W enrichment characterizes the distal facies of the mineralization. In spite of the obliterating and disrupting effects of the regional dynamo-metamorphism, the element distribution within the mineralization and alteration zones examined is comparable with the geochemical trends observed in present-day mineralizing systems in early- stage oceanic environments (e.g. Guaymas Basin). During exploration for blind volcanogenic mineralization, the detection of hydrothermally altered rocks is fundamental in indicating the proximity to the mineralization. The localization of the alteration zone is also important in the interpretation of the regional geology of the explored area: in deformed terrains the assessment of the stratigraphic position of the alteration zone, relative to the mineralization, helps in establishing the polarity of the sequence.
- Full Text:
- Date Issued: 1991
- Authors: Moroni, Marilena
- Date: 1991
- Subjects: Geology -- Namibia , Petrology -- Namibia , Geochemistry -- Namibia
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5045 , http://hdl.handle.net/10962/d1007693 , Geology -- Namibia , Petrology -- Namibia , Geochemistry -- Namibia
- Description: The Matchless Amphibolite Belt (Damara Orogen, Namibia) hosts several volcanogenic-exhalative, sediment-hosted stratiform cupriferous pyrite deposits. These are thought to be related to submarine volcanism during the early evolutionary stages of a narrow Damaran ocean, the Matchless Trough. The mineralized bodies examined (Ongeama, Ongombo and Matchless West Extension) are deformed and metamorphosed to low-medium grade (greenschist-amphibolite facies). They are associated with metapelite and amphibolite country rocks, and crop out as prominent limonite-rich gossans. The elongated shape of the sulphide bodies suggests a structural control. The mineralization normally consists of a variably developed massive sulphide portion, either quartz-, talc- or amphibole-bearing, and a stratigraphically overlying, extensive horizon of sulphide- and baryte-bearing exhalite (magnetite quartzite and less common talc- and actinolite-bearing schists). Lateral and vertical mineralogical changes within the mineralization match with significant variations in the element distribution. A metamorphosed and deformed alteration pipe, indicating the position of the fluid conduit, can be recognized in association with some ore bodies. The formation of quartz-muscovite and chlorite alteration envelopes (Ongeama, Matchless West Extension) and the presence of subtle mineralogical changes (Ongombo) in the immediate wallrocks, accompanied by extensive redistribution, leaching and introduction of elements from outside, suggest the hydrothermal metasomatic origin of the alteration zones. Element zoning within the mineralized bodies can be related to the original position of the vent, possibly coinciding with the intersection of the axis of the alteration pipe with the sulphide body. Cu, Zn, Au (pro parte) and Mo are enriched proximal to the vent, whereas Pb, Ba, Mn, Ag, Au, Sn, Bi and W enrichment characterizes the distal facies of the mineralization. In spite of the obliterating and disrupting effects of the regional dynamo-metamorphism, the element distribution within the mineralization and alteration zones examined is comparable with the geochemical trends observed in present-day mineralizing systems in early- stage oceanic environments (e.g. Guaymas Basin). During exploration for blind volcanogenic mineralization, the detection of hydrothermally altered rocks is fundamental in indicating the proximity to the mineralization. The localization of the alteration zone is also important in the interpretation of the regional geology of the explored area: in deformed terrains the assessment of the stratigraphic position of the alteration zone, relative to the mineralization, helps in establishing the polarity of the sequence.
- Full Text:
- Date Issued: 1991
A decade of changes Eastern Cape white commercial farmers' discourses of democracy
- Authors: Böhmke, Werner
- Date: 2005
- Subjects: Farmers -- Psychology , Agriculture -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Democracy -- South Africa -- Eastern Cape , Political culture -- South Africa -- Eastern Cape , Social psychology -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2934 , http://hdl.handle.net/10962/d1002443 , Farmers -- Psychology , Agriculture -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Democracy -- South Africa -- Eastern Cape , Political culture -- South Africa -- Eastern Cape , Social psychology -- South Africa -- Eastern Cape
- Description: This paper deals with an analysis of the discursive accounts of Eastern Cape white commercial farmers on the subject of Democracy. Drawing on the theoretical perspectives of Social Constructionism and Discourse Analysis – which view individuals’ accounts of their realities as produced and informed by their particular social and historical context – the paper seeks to provide an analysis of the content of, and rhetorical strategies within the participants’ accounts and explanations. Such accounts of the social, historical and political circumstances in which Eastern Cape commercial farmers find themselves are thought to provide valuable insights into the manner in which the process of democratisation has been received by members of the agricultural sector. Data collection was conducted via brief, audio taped, semi-structured interviews. The participants were all white men and women, living in a commercial farming region of the Eastern Cape Province. Responses to the interviews were subjected to the Discourse Analytical procedure advanced by Ian Parker. Analyses reveal that participants are critical of the notion of democracy; utilize specific rhetorical and argumentation strategies; make use of notions and techniques of ‘Othering’; and subscribe to a colonial / patriarchal ideology which attempts to idealize pre-democratic South Africa. These findings illustrate what is in many ways still an ongoing political and ideological struggle in the rural regions of the country.
- Full Text:
- Date Issued: 2005
- Authors: Böhmke, Werner
- Date: 2005
- Subjects: Farmers -- Psychology , Agriculture -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Democracy -- South Africa -- Eastern Cape , Political culture -- South Africa -- Eastern Cape , Social psychology -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2934 , http://hdl.handle.net/10962/d1002443 , Farmers -- Psychology , Agriculture -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Democracy -- South Africa -- Eastern Cape , Political culture -- South Africa -- Eastern Cape , Social psychology -- South Africa -- Eastern Cape
- Description: This paper deals with an analysis of the discursive accounts of Eastern Cape white commercial farmers on the subject of Democracy. Drawing on the theoretical perspectives of Social Constructionism and Discourse Analysis – which view individuals’ accounts of their realities as produced and informed by their particular social and historical context – the paper seeks to provide an analysis of the content of, and rhetorical strategies within the participants’ accounts and explanations. Such accounts of the social, historical and political circumstances in which Eastern Cape commercial farmers find themselves are thought to provide valuable insights into the manner in which the process of democratisation has been received by members of the agricultural sector. Data collection was conducted via brief, audio taped, semi-structured interviews. The participants were all white men and women, living in a commercial farming region of the Eastern Cape Province. Responses to the interviews were subjected to the Discourse Analytical procedure advanced by Ian Parker. Analyses reveal that participants are critical of the notion of democracy; utilize specific rhetorical and argumentation strategies; make use of notions and techniques of ‘Othering’; and subscribe to a colonial / patriarchal ideology which attempts to idealize pre-democratic South Africa. These findings illustrate what is in many ways still an ongoing political and ideological struggle in the rural regions of the country.
- Full Text:
- Date Issued: 2005
An investigation into the possible neuroprotective or neurotoxic properties of metrifonate
- Authors: Ramsunder, Adrusha
- Date: 2005 , 2013-06-11
- Subjects: Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3833 , http://hdl.handle.net/10962/d1007560 , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Description: Alzheimer's disease is a progressive neurodegenerative disorder, in which there is a marked decline in neurotransmitters, especially those of the cholinergic pathways. One of the approaches to the symptomatic treatment of Alzheimer's disease is the inhibition of the breakdown of the neurotransmitter acetylcholine, using an acetylcholinesterase inhibitor. One such drug tested, is the organophosphate, metrifonate. Any drug used for the treatment of neurodegenerative disorders should preferably not induce further neurological damage. Thus, in the present study, we investigated whether or not metrifonate is neuroprotective. The in vivo and in vitro effect of this drug on free radicals generation shows that metrifonate increases the level ofthese reactive species. Lipid peroxidation induced using quinolinic acid (QA) and iron (II) and show that metrifonate increased the peroxidative damage induced by using quinolinic acid. Metrifonate is also able to induce lipid peroxidation both in vivo and in vitro. This was reduced in vitro in the presence of melatonin. Using iron (II), in vi/ro, there was no significant difference in the level of lipid peroxidation in the presence of this drug. An investigation of the activity of the mitochondrial electron transport chain and complex I of the electron transport chain in the presence of metrifonate revealed that metrifonate reduces the activity of the electron transport chain at the level of complex I. The activity of the mitochondrial electron transport chain was restored in the presence of melatonin. Pineal organ culture showed that metrifonate does not increase melatonin production. Histological and apoptosis studies show that tissue necrosis and apoptosis respectively, occur in the presence of this agent, which is reduced in the presence of melatonin. Metal binding studies were performed USing ultraviolet spectroscopy, and electrochemical analysis to examine the interaction of metrifonate with iron (II) and iron (III). No shift in the peak was observed in the ultraviolet spectrum when iron (ll) was added to metrifonate. Electrochemical studies show that there may be a very weak or no ligand formed between the metal and drug. This study shows that while drugs such as metrifonate may be beneficial in restoring cognitive function in Alzheimer's disease, it could also have the potential to enhance neurodegeneration, thus worsening the condition, in the long term. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2005
- Authors: Ramsunder, Adrusha
- Date: 2005 , 2013-06-11
- Subjects: Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:3833 , http://hdl.handle.net/10962/d1007560 , Nervous system -- Degeneration -- Treatment , Neurotoxic agents , Alzheimer's disease -- Treatment , Metrifonate
- Description: Alzheimer's disease is a progressive neurodegenerative disorder, in which there is a marked decline in neurotransmitters, especially those of the cholinergic pathways. One of the approaches to the symptomatic treatment of Alzheimer's disease is the inhibition of the breakdown of the neurotransmitter acetylcholine, using an acetylcholinesterase inhibitor. One such drug tested, is the organophosphate, metrifonate. Any drug used for the treatment of neurodegenerative disorders should preferably not induce further neurological damage. Thus, in the present study, we investigated whether or not metrifonate is neuroprotective. The in vivo and in vitro effect of this drug on free radicals generation shows that metrifonate increases the level ofthese reactive species. Lipid peroxidation induced using quinolinic acid (QA) and iron (II) and show that metrifonate increased the peroxidative damage induced by using quinolinic acid. Metrifonate is also able to induce lipid peroxidation both in vivo and in vitro. This was reduced in vitro in the presence of melatonin. Using iron (II), in vi/ro, there was no significant difference in the level of lipid peroxidation in the presence of this drug. An investigation of the activity of the mitochondrial electron transport chain and complex I of the electron transport chain in the presence of metrifonate revealed that metrifonate reduces the activity of the electron transport chain at the level of complex I. The activity of the mitochondrial electron transport chain was restored in the presence of melatonin. Pineal organ culture showed that metrifonate does not increase melatonin production. Histological and apoptosis studies show that tissue necrosis and apoptosis respectively, occur in the presence of this agent, which is reduced in the presence of melatonin. Metal binding studies were performed USing ultraviolet spectroscopy, and electrochemical analysis to examine the interaction of metrifonate with iron (II) and iron (III). No shift in the peak was observed in the ultraviolet spectrum when iron (ll) was added to metrifonate. Electrochemical studies show that there may be a very weak or no ligand formed between the metal and drug. This study shows that while drugs such as metrifonate may be beneficial in restoring cognitive function in Alzheimer's disease, it could also have the potential to enhance neurodegeneration, thus worsening the condition, in the long term. , KMBT_363 , Adobe Acrobat 9.54 Paper Capture Plug-in
- Full Text:
- Date Issued: 2005
Identifying expansive learning opportunities to foster a more sustainable food economy: a case study of Rhodes University dining halls
- Authors: Agbedahin, Adesuwa Vanessa
- Date: 2012
- Subjects: Food supply -- Education (Higher) -- South Africa -- Case studies Food industry and trade -- Education (Higher) -- Standards -- South Africa -- Case studies Food service employees -- Education (Higher) -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1560 , http://hdl.handle.net/10962/d1003442
- Description: This is a one year half thesis. This research was conducted within the context of the food services sector of Higher Education Institution dining halls and in the midst of the rising global call for food resource management and food waste reduction. The main aim of this research therefore was to identify opportunities for learning and change for a more sustainable food economy, contributing to Education for Sustainable Production and Consumption, and by further implication, Education for Sustainable Development. To achieve this aim, I used Cultural Historical Activity Theory as theoretical and methodological framework; drawing on the second and the third generations of this theory. Implicated in the above research approach is the identification of expansive learning opportunities from the surfacing of ‘tensions’ and ‘contradictions’. In this case study of the Rhodes University Campus Food Services, such tensions and contradictions inhibiting a more sustainable food economy, involving food waste production were identified. To narrow the scope of the study, one dining hall formed the focus of the case, with a two phased research approach whereby one research question and three goals were developed for each phase. The former being the exploration phase and the latter being the initial stages of the expansive phase. Methods used in line with the methodological framework included ten individual interviews with food producers (staff members), nine focus group discussions with food consumers (students), observations of the dining hall activities which lasted for over a month and two ‘Change Laboratory Workshops’. Some of the findings of this research are that food wastage cannot be addressed and appropriately curtailed without an intensive consideration of all the stages of food economy. Multiple contradictions and sources of tensions embedded in the Food Services Sector constituted major causes of food waste. Additionally, the lack of substantial food waste related teaching and learning activities, the presence of disputed rules, institutional structure and traditional practices within the Food Services all exacerbated the tensions and contradictions. More so, prioritizing some of this identified contradictions and tensions hindering a more sustainable food economy and relegating some as unimportant or nonurgent is unproductive. Finally, the non-existence of facilitated deliberation, consultation, dialogue, collaboration between food producers and food consumers has been identified as an obstacle to learning and institutional change. Recommendations abound in re-orienting, re-educating, and re-informing the constituents of the food economy. Re-visiting and revising of rules and regulations guiding conduct of students and kitchen staff members in the RU dining halls, as well as revision of existing learning support materials and mediating tools in use is needed. Recognition and consideration of the concerns and interests of students and kitchen staff members are also needed. Finally, there is a need to continue to address the tensions and contradictions identified in this case study, to further the Expansive Learning Process if a more sustainable food economy at Rhodes University is to be established.
- Full Text:
- Date Issued: 2012
- Authors: Agbedahin, Adesuwa Vanessa
- Date: 2012
- Subjects: Food supply -- Education (Higher) -- South Africa -- Case studies Food industry and trade -- Education (Higher) -- Standards -- South Africa -- Case studies Food service employees -- Education (Higher) -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1560 , http://hdl.handle.net/10962/d1003442
- Description: This is a one year half thesis. This research was conducted within the context of the food services sector of Higher Education Institution dining halls and in the midst of the rising global call for food resource management and food waste reduction. The main aim of this research therefore was to identify opportunities for learning and change for a more sustainable food economy, contributing to Education for Sustainable Production and Consumption, and by further implication, Education for Sustainable Development. To achieve this aim, I used Cultural Historical Activity Theory as theoretical and methodological framework; drawing on the second and the third generations of this theory. Implicated in the above research approach is the identification of expansive learning opportunities from the surfacing of ‘tensions’ and ‘contradictions’. In this case study of the Rhodes University Campus Food Services, such tensions and contradictions inhibiting a more sustainable food economy, involving food waste production were identified. To narrow the scope of the study, one dining hall formed the focus of the case, with a two phased research approach whereby one research question and three goals were developed for each phase. The former being the exploration phase and the latter being the initial stages of the expansive phase. Methods used in line with the methodological framework included ten individual interviews with food producers (staff members), nine focus group discussions with food consumers (students), observations of the dining hall activities which lasted for over a month and two ‘Change Laboratory Workshops’. Some of the findings of this research are that food wastage cannot be addressed and appropriately curtailed without an intensive consideration of all the stages of food economy. Multiple contradictions and sources of tensions embedded in the Food Services Sector constituted major causes of food waste. Additionally, the lack of substantial food waste related teaching and learning activities, the presence of disputed rules, institutional structure and traditional practices within the Food Services all exacerbated the tensions and contradictions. More so, prioritizing some of this identified contradictions and tensions hindering a more sustainable food economy and relegating some as unimportant or nonurgent is unproductive. Finally, the non-existence of facilitated deliberation, consultation, dialogue, collaboration between food producers and food consumers has been identified as an obstacle to learning and institutional change. Recommendations abound in re-orienting, re-educating, and re-informing the constituents of the food economy. Re-visiting and revising of rules and regulations guiding conduct of students and kitchen staff members in the RU dining halls, as well as revision of existing learning support materials and mediating tools in use is needed. Recognition and consideration of the concerns and interests of students and kitchen staff members are also needed. Finally, there is a need to continue to address the tensions and contradictions identified in this case study, to further the Expansive Learning Process if a more sustainable food economy at Rhodes University is to be established.
- Full Text:
- Date Issued: 2012
An assessment of the monkfish resource of Namibia
- Authors: Maartens, Lima
- Date: 2000
- Subjects: Lophius -- Namibia Lophius
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5231 , http://hdl.handle.net/10962/d1005074
- Description: Two monkfish species are caught off the coast of Namibia. These are Lophius vomerinus Valenciennes (1837) and L. vaillanti Regan (1903). L. vomerinus is the more abundant of the two and contributes approximately 99% to the total Namibian monkfish landings. The Namibian monkfish fishery is one of the largest and most valuable of its kind in the world. Two fishing fleets harvest the resource, viz. the monkfish and sole fleet and the hake directed fleet. In 1998 and 1999, monkfish were also harvested by one gillnet vessel that had an experimental right. In this study, the biology, abundance and exploitation patterns of monkfish were investigated and used as inputs into a stock assessment framework as a contribution towards the development of a management procedure for this species. Ground and sectioned otoliths and sectioned illicia were used to age Lophius vomerinus. The illicia provided more precise estimates of age, and growth was subsequently modelled using these age estimates. Growth in length and weight was best described by the threeparameter specialised von Bertalanffy model as Lt (cm TL) = 72.29 (1-e⁻°·¹⁴⁽t⁺°·³°⁾) and Wt (kg) = 3.96 (1-e⁻°·¹⁸⁽t⁺°·¹°⁾)²·⁹⁹ for males, and Lt (cm TL) = 111.98 (1-e⁻°·°⁸⁽t⁺°·³⁶⁾) and Wt (kg) = 6.92 (1-e⁻°·¹⁸⁽t⁻°·⁶⁴⁾)³·°³ for females. L. vomerinus is a slow-growing species with a life span in excess of 10 years. Reproductive activity was shown to occur throughout the year, with a slight peak during the winter months. The adult sex ratio of fish > 37 cm TL was biased towards females. Length-at-50% sexual maturity was attained at 32.1 cm TL for females and 23.7 cm TL for males. The rate of natural mortality was estimated at 0.15 year⁻¹, while fishing mortality rates during the 1970s, 1980s and 1990s were estimated at 0.01 year⁻¹, 0.04 year⁻¹ and 0.14 year⁻¹, respectively. Gillnetting for monkfish (300 mm stretched mesh) was highly efficient with a moderate bycatch of around 20% during the two years of operation. The main bycatch species were red crab, spider crab, squalid sharks, rays and Cape and Deep-water hake. The mean length of the monkfish caught in gillnets (67 cm TL) was significantly larger than the monkfish landed by the trawlers (38 cm TL) and less than 1% of immature fish were landed. Gillnet catch-per-unit-effort for monkfish fluctuated between 0.03 and 0.67 kg.day⁻¹.50 m net panel⁻¹, with a soak time of between one and sixteen days. More than 50% (by weight) of monkfish landed by monkfish and sole trawlers, consisted of fish below 36 cm TL. There was a significant increase in catches of juvenile monkfish during 1997 and 1998 in comparison to the period 1994 to 1996. Various types of rigid sorting grids were tested to release juvenile monkfish below 32 cm TL. Five grid designs were tested. These included an “Ex-it” grid with horizontal bars spaced at 55 mm, single grids with vertical and horizontal bars spaced at 55 mm and grids with circular openings of 110 and 168 mm in diameter. The most efficient design was the grid with circular openings of 110 cm in diameter, which ensured the escape of 66% of monkfish smaller than 31 cm TL. However, studies need to be undertaken to quantify the survival of released fish and to test the feasibility of using grid sorters on commercial monkfish and sole trawling gear. The monkfish resource was assessed by means of length cohort analyses, the Thompson and Bell predictive model and by way of a deterministic age-structured production modelling approach. The length cohort analysis models were sensitive to the rate of natural mortality and insensitive to changes in the terminal fishing mortality rate. These biases may, however, not be serious provided that estimates of abundance are used to reflect relative changes. Fish ranging between 26 and 59 cm TL are the most heavily exploited. The Thompson and Bell model predicted that the monkfish resource is exploited above MSY -levels and a reduction of approximately 40% in fishing effort would provide a higher yield. Yield-per-recruit ranged between 10 000 and 14 000 tonnes. Results should, however, be treated with caution, as the condition of steady state was not satisfied. The age-structured production model was tuned using trends in catch-per-unit-effort data, estimated by Generalised Linear Modeling, as well as relative abundance indices calculated from hake biomass surveys. The model was found to be sensitive to both the ‘steepness’ parameter h and estimates of natural mortality. The ‘depletion’ level of the monkfish resource is currently estimated to be 49%. Estimated coefficients of variation were high (> 63%) due to the lack of a consistent trend within the abundance indices to tune the model. Overall productivity of the monkfish resource was estimated to be approximately 16%, similar to other southern African demersal resources. Results of the risk analyses suggest that catches in excess of 7 000 tonnes may be unsustainable and that catches of 5 000 or 6 000 tonnes would decrease the risk of stock collapse and possibly lead to a recovery in the stock. Monkfish management strategies were reviewed and these were considered in relation to the results of this study. The following management recommendations were made: to follow the precautionary approach and implement a total allowable catch for monkfish; to implement rigid sorting grids as these would be the most appropriate way in which to reduce catches of juvenile monkfish; to restrict soak time, depth of operation and implement means to reduce ‘ghost fishing’ by gillnetting and finally, to develop a management procedure for Namibian monkfish with the main objective being the sustainable exploitation of the resource.
- Full Text:
- Date Issued: 2000
- Authors: Maartens, Lima
- Date: 2000
- Subjects: Lophius -- Namibia Lophius
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5231 , http://hdl.handle.net/10962/d1005074
- Description: Two monkfish species are caught off the coast of Namibia. These are Lophius vomerinus Valenciennes (1837) and L. vaillanti Regan (1903). L. vomerinus is the more abundant of the two and contributes approximately 99% to the total Namibian monkfish landings. The Namibian monkfish fishery is one of the largest and most valuable of its kind in the world. Two fishing fleets harvest the resource, viz. the monkfish and sole fleet and the hake directed fleet. In 1998 and 1999, monkfish were also harvested by one gillnet vessel that had an experimental right. In this study, the biology, abundance and exploitation patterns of monkfish were investigated and used as inputs into a stock assessment framework as a contribution towards the development of a management procedure for this species. Ground and sectioned otoliths and sectioned illicia were used to age Lophius vomerinus. The illicia provided more precise estimates of age, and growth was subsequently modelled using these age estimates. Growth in length and weight was best described by the threeparameter specialised von Bertalanffy model as Lt (cm TL) = 72.29 (1-e⁻°·¹⁴⁽t⁺°·³°⁾) and Wt (kg) = 3.96 (1-e⁻°·¹⁸⁽t⁺°·¹°⁾)²·⁹⁹ for males, and Lt (cm TL) = 111.98 (1-e⁻°·°⁸⁽t⁺°·³⁶⁾) and Wt (kg) = 6.92 (1-e⁻°·¹⁸⁽t⁻°·⁶⁴⁾)³·°³ for females. L. vomerinus is a slow-growing species with a life span in excess of 10 years. Reproductive activity was shown to occur throughout the year, with a slight peak during the winter months. The adult sex ratio of fish > 37 cm TL was biased towards females. Length-at-50% sexual maturity was attained at 32.1 cm TL for females and 23.7 cm TL for males. The rate of natural mortality was estimated at 0.15 year⁻¹, while fishing mortality rates during the 1970s, 1980s and 1990s were estimated at 0.01 year⁻¹, 0.04 year⁻¹ and 0.14 year⁻¹, respectively. Gillnetting for monkfish (300 mm stretched mesh) was highly efficient with a moderate bycatch of around 20% during the two years of operation. The main bycatch species were red crab, spider crab, squalid sharks, rays and Cape and Deep-water hake. The mean length of the monkfish caught in gillnets (67 cm TL) was significantly larger than the monkfish landed by the trawlers (38 cm TL) and less than 1% of immature fish were landed. Gillnet catch-per-unit-effort for monkfish fluctuated between 0.03 and 0.67 kg.day⁻¹.50 m net panel⁻¹, with a soak time of between one and sixteen days. More than 50% (by weight) of monkfish landed by monkfish and sole trawlers, consisted of fish below 36 cm TL. There was a significant increase in catches of juvenile monkfish during 1997 and 1998 in comparison to the period 1994 to 1996. Various types of rigid sorting grids were tested to release juvenile monkfish below 32 cm TL. Five grid designs were tested. These included an “Ex-it” grid with horizontal bars spaced at 55 mm, single grids with vertical and horizontal bars spaced at 55 mm and grids with circular openings of 110 and 168 mm in diameter. The most efficient design was the grid with circular openings of 110 cm in diameter, which ensured the escape of 66% of monkfish smaller than 31 cm TL. However, studies need to be undertaken to quantify the survival of released fish and to test the feasibility of using grid sorters on commercial monkfish and sole trawling gear. The monkfish resource was assessed by means of length cohort analyses, the Thompson and Bell predictive model and by way of a deterministic age-structured production modelling approach. The length cohort analysis models were sensitive to the rate of natural mortality and insensitive to changes in the terminal fishing mortality rate. These biases may, however, not be serious provided that estimates of abundance are used to reflect relative changes. Fish ranging between 26 and 59 cm TL are the most heavily exploited. The Thompson and Bell model predicted that the monkfish resource is exploited above MSY -levels and a reduction of approximately 40% in fishing effort would provide a higher yield. Yield-per-recruit ranged between 10 000 and 14 000 tonnes. Results should, however, be treated with caution, as the condition of steady state was not satisfied. The age-structured production model was tuned using trends in catch-per-unit-effort data, estimated by Generalised Linear Modeling, as well as relative abundance indices calculated from hake biomass surveys. The model was found to be sensitive to both the ‘steepness’ parameter h and estimates of natural mortality. The ‘depletion’ level of the monkfish resource is currently estimated to be 49%. Estimated coefficients of variation were high (> 63%) due to the lack of a consistent trend within the abundance indices to tune the model. Overall productivity of the monkfish resource was estimated to be approximately 16%, similar to other southern African demersal resources. Results of the risk analyses suggest that catches in excess of 7 000 tonnes may be unsustainable and that catches of 5 000 or 6 000 tonnes would decrease the risk of stock collapse and possibly lead to a recovery in the stock. Monkfish management strategies were reviewed and these were considered in relation to the results of this study. The following management recommendations were made: to follow the precautionary approach and implement a total allowable catch for monkfish; to implement rigid sorting grids as these would be the most appropriate way in which to reduce catches of juvenile monkfish; to restrict soak time, depth of operation and implement means to reduce ‘ghost fishing’ by gillnetting and finally, to develop a management procedure for Namibian monkfish with the main objective being the sustainable exploitation of the resource.
- Full Text:
- Date Issued: 2000
The individual and the social order in Mill and Hegel : seeking common principles in liberal and communitarian ancestry
- Authors: Koseff, Justin Adam
- Date: 2003
- Subjects: Hegel, Georg Wilhelm Friedrich, 1770-1831 , Mill, John Stuart, 1806-1873 , Liberalism , Communitarianism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2843 , http://hdl.handle.net/10962/d1005624 , Hegel, Georg Wilhelm Friedrich, 1770-1831 , Mill, John Stuart, 1806-1873 , Liberalism , Communitarianism
- Description: This thesis seeks to establish a significant commonality and compatibility between the principles underpinning the political and social philosophies of GWF Hegel and John Stuart Mill. The role of the individual and the social order in both their theories is discussed and assessed separately and in turn in reference to their respective seminal works on the proper structure, principles and function of modern political infrastructure. Through an interpretation of the fundamental tenets and goals of their theories of the social order I argue for a coherent modern reconstruction of their doctrines, within which I locate parallels and contrasts as they apply. Both theorists as ultimately put forward similar arguments for freedom as an intersubjectively·developed capacity, the ideal social order as rational framework for the management of ethical and political engagement, linked to a social holism that ties individual and social progress inextricably. A respect for individual particularity of perspective and practice is integral both of their social frameworks, but that such a space must be harmonised within a rational political community worthy of individual obligation. Finally their social and political theories can be understood as complementary, each providing insights which the other lacks. Mill suffers from an insufficient regard for the social basis of identity and interconnected nature of the modern institutional framework, while Hegel displays an insufficient regard for Mill's caveats concerning the repressive potential of institutional structures and the dangers of overly empowered bureaucracies. In conclusion key elements of the two theorists' projects stand as separate but not in any way fundamentally opposed to each other. This points to the possibility of a via media between a politics of individualism and a politics of community, suggesting strong potential for reconciliation between liberal and communitarian perspectives.
- Full Text:
- Date Issued: 2003
- Authors: Koseff, Justin Adam
- Date: 2003
- Subjects: Hegel, Georg Wilhelm Friedrich, 1770-1831 , Mill, John Stuart, 1806-1873 , Liberalism , Communitarianism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2843 , http://hdl.handle.net/10962/d1005624 , Hegel, Georg Wilhelm Friedrich, 1770-1831 , Mill, John Stuart, 1806-1873 , Liberalism , Communitarianism
- Description: This thesis seeks to establish a significant commonality and compatibility between the principles underpinning the political and social philosophies of GWF Hegel and John Stuart Mill. The role of the individual and the social order in both their theories is discussed and assessed separately and in turn in reference to their respective seminal works on the proper structure, principles and function of modern political infrastructure. Through an interpretation of the fundamental tenets and goals of their theories of the social order I argue for a coherent modern reconstruction of their doctrines, within which I locate parallels and contrasts as they apply. Both theorists as ultimately put forward similar arguments for freedom as an intersubjectively·developed capacity, the ideal social order as rational framework for the management of ethical and political engagement, linked to a social holism that ties individual and social progress inextricably. A respect for individual particularity of perspective and practice is integral both of their social frameworks, but that such a space must be harmonised within a rational political community worthy of individual obligation. Finally their social and political theories can be understood as complementary, each providing insights which the other lacks. Mill suffers from an insufficient regard for the social basis of identity and interconnected nature of the modern institutional framework, while Hegel displays an insufficient regard for Mill's caveats concerning the repressive potential of institutional structures and the dangers of overly empowered bureaucracies. In conclusion key elements of the two theorists' projects stand as separate but not in any way fundamentally opposed to each other. This points to the possibility of a via media between a politics of individualism and a politics of community, suggesting strong potential for reconciliation between liberal and communitarian perspectives.
- Full Text:
- Date Issued: 2003
The influence of individual employee performance metrics on a sub-culture in a professional services firm in Durban, South Africa
- Authors: Zvarevashe, Marshall
- Date: 2013
- Subjects: Performance -- Evaluation Corporate culture -- South Africa Organizational effectiveness Leadership Management -- South Africa Organizational behavior -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:714 , http://hdl.handle.net/10962/d1001868
- Description: In today’s fast paced and global economy, competitive advantage is increasingly focused more on organisational behaviours rather than on the traditional tenets of land, labour and capital. Going beyond the traditional, organisations that are best able to get the most and the best out of their people are the ones most likely to perform better. This study aims to build an understanding of how culture is influenced by individual employee performance metrics that are used in an organisation. Previous research has been done in the broad fields of organisational culture and employee performance metrics separately, but no studies were identified in literature that focused on the interaction of the two concepts specifically. Therefore, this study seeks to answer the following research question: How do individual employee performance metrics influence sub-culture in the context of a professional services firm in Durban? This study predominantly focused not on performance at the organisational level, but rather the more granular level of individual employee performance metrics and sub-culture in one of the divisions of a professional services firm. This qualitative study explores the multiple perspectives of reality of ten of the 32 managers in the Advisory division of a professional services organisation, regarding how individual employee performance metrics influence their world view of work, or the way they perceive, think, feel and interact in the world of work. The focus of the study was limited to one department, in one branch of a multinational organisation and focused only on the horizontal layer of the “manager group” within the staff levels. Semi-structured, in-depth and face-to-face interviews were conducted with these managers as a means of gathering and saturating data. Interviewees were identified using a stratified sampling from the group of managers in the Advisory division. Open coding and constant comparison was used to analyse data. Page ii of viii The results of the study show that managers had very varied and complex perceptions of how the individual performance metrics used to assess their performance influence the sub-culture of their world of work. The key findings manifested that misuse and abuse of performance metrics by leaders, leadership bias in respect to recognition, reward and remunerations, the predominant focus of the division on the bottom line and emphasis on success at all cost, and low employee morale were all aspects of performance that impacted on how employees behaved in the division. The effect of these factors on the managers operating in this division was that there were low levels of employee commitment which were experienced through low morale and reduced productivity; managers felt that there was a restriction in the development of their careers, all of which resulted in a disregard to values of the organisation. This study reflects how the reward and recognition system using the balanced scorecard has shifted the focus of the department away from the organisation’s espoused values. This has resulted in various leadership and management questions for the leadership of the division in this study. This research also adds to existing literature that links performance and culture within the organisational context that it goes beyond the prevalent themes in literature which focus on performance at the organisation level. This study focuses on performance at the employee level and in particular in a professional services firm in South Africa. The study has three interrelated sections which are however considered as standalone. The first section is an evaluation report based on the Advisory division of a professional services firm in Durban, South Africa, and consists of a literature review, the methodology followed in conducting the study, results and the discussion thereof. The report also highlights limitations of the study, recommendations and the perceived value of the study. The report ends with a summary in the form of a conclusion. Section 2 comprises a more comprehensive literature review while Section 3 documents the research methodology followed in the study.
- Full Text:
- Date Issued: 2013
- Authors: Zvarevashe, Marshall
- Date: 2013
- Subjects: Performance -- Evaluation Corporate culture -- South Africa Organizational effectiveness Leadership Management -- South Africa Organizational behavior -- South Africa
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:714 , http://hdl.handle.net/10962/d1001868
- Description: In today’s fast paced and global economy, competitive advantage is increasingly focused more on organisational behaviours rather than on the traditional tenets of land, labour and capital. Going beyond the traditional, organisations that are best able to get the most and the best out of their people are the ones most likely to perform better. This study aims to build an understanding of how culture is influenced by individual employee performance metrics that are used in an organisation. Previous research has been done in the broad fields of organisational culture and employee performance metrics separately, but no studies were identified in literature that focused on the interaction of the two concepts specifically. Therefore, this study seeks to answer the following research question: How do individual employee performance metrics influence sub-culture in the context of a professional services firm in Durban? This study predominantly focused not on performance at the organisational level, but rather the more granular level of individual employee performance metrics and sub-culture in one of the divisions of a professional services firm. This qualitative study explores the multiple perspectives of reality of ten of the 32 managers in the Advisory division of a professional services organisation, regarding how individual employee performance metrics influence their world view of work, or the way they perceive, think, feel and interact in the world of work. The focus of the study was limited to one department, in one branch of a multinational organisation and focused only on the horizontal layer of the “manager group” within the staff levels. Semi-structured, in-depth and face-to-face interviews were conducted with these managers as a means of gathering and saturating data. Interviewees were identified using a stratified sampling from the group of managers in the Advisory division. Open coding and constant comparison was used to analyse data. Page ii of viii The results of the study show that managers had very varied and complex perceptions of how the individual performance metrics used to assess their performance influence the sub-culture of their world of work. The key findings manifested that misuse and abuse of performance metrics by leaders, leadership bias in respect to recognition, reward and remunerations, the predominant focus of the division on the bottom line and emphasis on success at all cost, and low employee morale were all aspects of performance that impacted on how employees behaved in the division. The effect of these factors on the managers operating in this division was that there were low levels of employee commitment which were experienced through low morale and reduced productivity; managers felt that there was a restriction in the development of their careers, all of which resulted in a disregard to values of the organisation. This study reflects how the reward and recognition system using the balanced scorecard has shifted the focus of the department away from the organisation’s espoused values. This has resulted in various leadership and management questions for the leadership of the division in this study. This research also adds to existing literature that links performance and culture within the organisational context that it goes beyond the prevalent themes in literature which focus on performance at the organisation level. This study focuses on performance at the employee level and in particular in a professional services firm in South Africa. The study has three interrelated sections which are however considered as standalone. The first section is an evaluation report based on the Advisory division of a professional services firm in Durban, South Africa, and consists of a literature review, the methodology followed in conducting the study, results and the discussion thereof. The report also highlights limitations of the study, recommendations and the perceived value of the study. The report ends with a summary in the form of a conclusion. Section 2 comprises a more comprehensive literature review while Section 3 documents the research methodology followed in the study.
- Full Text:
- Date Issued: 2013
Regional connectivity, differentiation and biogeography of three species of the genus Lutjanus in the western Indian Ocean
- Authors: Morallana, Jonas Moqebelo
- Date: 2014
- Subjects: Lutjanus -- Indian Ocean , Biogeography -- Indian Ocean , Phylogeography -- Indian Ocean , Lutjanus -- Geographical distribution , Lutjanus -- Variation , Mitochondrial DNA , Animal genetics , Variation (Biology)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5369 , http://hdl.handle.net/10962/d1013293
- Description: Snappers of the genus Lutjanus are small to large predatory fishes occurring in inshore circumtropical and subtropical waters throughout the world. These fishes support fisheries across their distribution range. Within the Western Indian Ocean (WIO), previous studies on Lutjanus kasmira revealed limited spatial genetic differentiation, whereas Lutjanus fulviflamma showed high genetic connectivity. The phylogenetic relationships among WIO snappers are unknown. Previous studies in the Indo-Pacific (IP) did not include any WIO representatives. This study examined (1) the phylogeographic patterns in Lutjanus bohar, L. fulviflamma and L. lutjanus to understand the origins and factors influencing the distribution of diversity in the region, (2) how the physical environment, biological, and ecological factors influence genetic diversity, (3) the placement of WIO snappers in context to those from the IP, as well as the placement of taxa not included previously, (4) extent of differentiation among conspecifics from the two regions, and (5) the relationship of the Caesionidae to the Lutjanidae. Samples were sourced from across the WIO and from peripheral localities, where possible. DNA sequence data were generated from two mitochondrial gene regions (cyt-b and NADH-2) and a nuclear gene region (S7 intron 1). Data were analysed under a phylogeographic framework to examine genetic structure, diversity and differentiation among identified regions for each of the three species. Other sequence data were generated from two mitochondrial gene regions (COII and 16S rDNA) to examine the phylogenetic placement of WIO snappers in context of the IP snappers and the relationship of the Caesionidae to the Lutjanidae. Lutjanus bohar and L. fulviflamma displayed high genetic diversity, but lower diversities were observed for L. lutjanus. Genetic differentiation was observed between Mozambique and Maldives in L. bohar. Lutjanus fulviflamma was differentiated in South Africa, Mozambique, Mauritius and Thailand, while differentiation was observed between Kenya and Tanzania in Lutjanus lutjanus. Overall, low genetic differentiation and high connectivity were observed for each of the three species. This differentiation may result from intrinsic features of the species and extrinsic features of the environment, whereas the connectivity is mainly influenced by the pelagic larval duration. These patterns of differentiation are in accordance with a proposed vicariant biogeographic hypothesis for the origins of regional faunas of the IP. Phylogenies were similar to those published, with additional taxa not altering the previous groupings found. Conspecifics from the two regions clustered together, with varying degrees of differentiation among the WIO and IP, depending on the species. Members of the Caesionidae were nested within Lutjanidae, suggesting that morphological characters separating the two families are taxonomically insignificant. This affirms previous notions that the Caesionidae should be a subfamily within the Lutjanidae. This is the first multi-gene study, examining differentiation in multiple species of snapper over a wide geographic area in the WIO, and the results of this study could have potential implications for fisheries management and conservation.
- Full Text:
- Date Issued: 2014
- Authors: Morallana, Jonas Moqebelo
- Date: 2014
- Subjects: Lutjanus -- Indian Ocean , Biogeography -- Indian Ocean , Phylogeography -- Indian Ocean , Lutjanus -- Geographical distribution , Lutjanus -- Variation , Mitochondrial DNA , Animal genetics , Variation (Biology)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5369 , http://hdl.handle.net/10962/d1013293
- Description: Snappers of the genus Lutjanus are small to large predatory fishes occurring in inshore circumtropical and subtropical waters throughout the world. These fishes support fisheries across their distribution range. Within the Western Indian Ocean (WIO), previous studies on Lutjanus kasmira revealed limited spatial genetic differentiation, whereas Lutjanus fulviflamma showed high genetic connectivity. The phylogenetic relationships among WIO snappers are unknown. Previous studies in the Indo-Pacific (IP) did not include any WIO representatives. This study examined (1) the phylogeographic patterns in Lutjanus bohar, L. fulviflamma and L. lutjanus to understand the origins and factors influencing the distribution of diversity in the region, (2) how the physical environment, biological, and ecological factors influence genetic diversity, (3) the placement of WIO snappers in context to those from the IP, as well as the placement of taxa not included previously, (4) extent of differentiation among conspecifics from the two regions, and (5) the relationship of the Caesionidae to the Lutjanidae. Samples were sourced from across the WIO and from peripheral localities, where possible. DNA sequence data were generated from two mitochondrial gene regions (cyt-b and NADH-2) and a nuclear gene region (S7 intron 1). Data were analysed under a phylogeographic framework to examine genetic structure, diversity and differentiation among identified regions for each of the three species. Other sequence data were generated from two mitochondrial gene regions (COII and 16S rDNA) to examine the phylogenetic placement of WIO snappers in context of the IP snappers and the relationship of the Caesionidae to the Lutjanidae. Lutjanus bohar and L. fulviflamma displayed high genetic diversity, but lower diversities were observed for L. lutjanus. Genetic differentiation was observed between Mozambique and Maldives in L. bohar. Lutjanus fulviflamma was differentiated in South Africa, Mozambique, Mauritius and Thailand, while differentiation was observed between Kenya and Tanzania in Lutjanus lutjanus. Overall, low genetic differentiation and high connectivity were observed for each of the three species. This differentiation may result from intrinsic features of the species and extrinsic features of the environment, whereas the connectivity is mainly influenced by the pelagic larval duration. These patterns of differentiation are in accordance with a proposed vicariant biogeographic hypothesis for the origins of regional faunas of the IP. Phylogenies were similar to those published, with additional taxa not altering the previous groupings found. Conspecifics from the two regions clustered together, with varying degrees of differentiation among the WIO and IP, depending on the species. Members of the Caesionidae were nested within Lutjanidae, suggesting that morphological characters separating the two families are taxonomically insignificant. This affirms previous notions that the Caesionidae should be a subfamily within the Lutjanidae. This is the first multi-gene study, examining differentiation in multiple species of snapper over a wide geographic area in the WIO, and the results of this study could have potential implications for fisheries management and conservation.
- Full Text:
- Date Issued: 2014
A study of the performance of a Bantu sample on a test of perceptual field-dependence under conditions of normal and abnormal sensory environments
- Authors: Cogill, Charles John
- Date: 1970
- Subjects: Perception -- Testing , Senses and sensation -- Cross-cultural studies , Bantu speaking peoples
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3201 , http://hdl.handle.net/10962/d1010503 , Perception -- Testing , Senses and sensation -- Cross-cultural studies , Bantu speaking peoples
- Description: For purposes of this background study, previous research findings relating to the development of the concept of field dependence - independence may be traced in five clearly distinct and logical stages: Stage 1: The Determination of the Factors Responsible for the Maintenance of Proper Orientation to the Upright. Stage 11: The Investigation of Individual Differences in the Manner of Establishing the Upright. Stage III: The Consideration of Possible Hypotheses to Account for Consistent Individual Differences in this Mode of Perception. Stage IV: An Investigation of the Relationship Between an Individual's Characteristic Way of Perceiving and his General Personality Organisation Stage V: The Ultimate Extension and Elaboration of this Work into the Construct of Psychological Differentiation which proposes that individuals are likely to function at a more differentiated or less differentiated level in many areas of behaviour. Some discussion of these stages is necessary to provide background for the present study. Chapter 1, p. 1.
- Full Text:
- Date Issued: 1970
- Authors: Cogill, Charles John
- Date: 1970
- Subjects: Perception -- Testing , Senses and sensation -- Cross-cultural studies , Bantu speaking peoples
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3201 , http://hdl.handle.net/10962/d1010503 , Perception -- Testing , Senses and sensation -- Cross-cultural studies , Bantu speaking peoples
- Description: For purposes of this background study, previous research findings relating to the development of the concept of field dependence - independence may be traced in five clearly distinct and logical stages: Stage 1: The Determination of the Factors Responsible for the Maintenance of Proper Orientation to the Upright. Stage 11: The Investigation of Individual Differences in the Manner of Establishing the Upright. Stage III: The Consideration of Possible Hypotheses to Account for Consistent Individual Differences in this Mode of Perception. Stage IV: An Investigation of the Relationship Between an Individual's Characteristic Way of Perceiving and his General Personality Organisation Stage V: The Ultimate Extension and Elaboration of this Work into the Construct of Psychological Differentiation which proposes that individuals are likely to function at a more differentiated or less differentiated level in many areas of behaviour. Some discussion of these stages is necessary to provide background for the present study. Chapter 1, p. 1.
- Full Text:
- Date Issued: 1970
'Leaders like children playing with a grenade?' : an analysis of how the Arab Spring was received in South Africa
- Authors: Gevers, Tristan Ronald
- Date: 2013
- Subjects: Arab Spring, 2010- Revolutions -- Theory Arab countries -- Social conditions -- 21st century South Africa -- Social condtions -- 21st century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2846 , http://hdl.handle.net/10962/d1006031
- Description: When the Arab Spring took place, it took the world by surprise and sparked renewed interest in the idea of revolution. With differing opinions on what caused such a revolutionary wave throughout the North African and Middle Eastern region, many began looking at their own countries, and South Africa was no different. A debate was sparked in South Africa, as to whether there would be a revolution or not. What I originally set out to accomplish is to find out which side of the debate would be correct through the philosophical context of revolutionary theory. Initially, we attempted to define and consider the history of revolutionary theory. We found that revolutionary theory has gone through four generation and that even finding a theoretically informed definition is difficult. Following this, we considered some social-psychological theories of revolution as well as theories of moral indignation. We found that these theories were incredibly informative and that they provide some insight into the reasoning for revolutionary fear in the South African debate. Through the use of opinion pieces, we then considered the South African debate, and – using socialpsychological theories and the theories of moral indignation - found that both sides of the argument had valuable points, however, they often lacked some foresight. With tentative agreement, we found that the side arguing that there would a revolution in South Africa had a more valuable argument, despite its limitations. However, far more research is required before one can – with more accuracy – predict a revolutionary occurrence in such a way as was done in South Africa.
- Full Text:
- Date Issued: 2013
- Authors: Gevers, Tristan Ronald
- Date: 2013
- Subjects: Arab Spring, 2010- Revolutions -- Theory Arab countries -- Social conditions -- 21st century South Africa -- Social condtions -- 21st century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2846 , http://hdl.handle.net/10962/d1006031
- Description: When the Arab Spring took place, it took the world by surprise and sparked renewed interest in the idea of revolution. With differing opinions on what caused such a revolutionary wave throughout the North African and Middle Eastern region, many began looking at their own countries, and South Africa was no different. A debate was sparked in South Africa, as to whether there would be a revolution or not. What I originally set out to accomplish is to find out which side of the debate would be correct through the philosophical context of revolutionary theory. Initially, we attempted to define and consider the history of revolutionary theory. We found that revolutionary theory has gone through four generation and that even finding a theoretically informed definition is difficult. Following this, we considered some social-psychological theories of revolution as well as theories of moral indignation. We found that these theories were incredibly informative and that they provide some insight into the reasoning for revolutionary fear in the South African debate. Through the use of opinion pieces, we then considered the South African debate, and – using socialpsychological theories and the theories of moral indignation - found that both sides of the argument had valuable points, however, they often lacked some foresight. With tentative agreement, we found that the side arguing that there would a revolution in South Africa had a more valuable argument, despite its limitations. However, far more research is required before one can – with more accuracy – predict a revolutionary occurrence in such a way as was done in South Africa.
- Full Text:
- Date Issued: 2013
Electrospun nanofibers : an alternative sorbent material for solid phase extraction
- Chigome, Samuel, Samuel Chigome
- Authors: Chigome, Samuel , Samuel Chigome
- Date: 2012 , 2012-03-26
- Subjects: Nanofibers -- Research Electrospinning -- Research Sorbents -- Research Extraction (Chemistry) -- Research
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4314 , http://hdl.handle.net/10962/d1004972
- Description: The work described in the thesis seeks to lay a foundation for a better understanding of the use of electrospun nanofibers as a sorbent material. Three miniaturised electrospun nanofiber based solid phase extraction devices were fabricated. For the first two, 10 mg of electrospun polystyrene fibers were used as a sorbent bed for a micro column SPE device (8 mm bed height in a 200 μl pipette tip) and a disk (I) SPE device (5 mm 1 mm sorbent bed in a 1000 μl SPE barrel). While for the third, 4.6 mg of electrospun nylon nanofibers were used as a sorbent bed for a disk (II) SPE device, (sorbent bed consisting of 5 5 mm 350 μm stacked disks in a 500 μl SPE barrel). Corticosteroids were employed as model analytes for performance evaluation of the fabricated SPE devices. Quantitative recoveries (45.5-124.29 percent) were achieved for all SPE devices at a loading volume of 100 μl and analyte concentration of 500 ng ml-1. Three mathematical models; the Boltzmann, Weibull five parameter and the Sigmoid three parameter were employed to describe the break through profiles of each of the sorbent beds. The micro column SPE device exhibited a breakthrough volume of 1400 μl, and theoretical plates (7.98-9.1) while disk (I) SPE device exhibited 400-500 μl and 1.39-2.82 respectively. Disk (II) SPE device exhibited a breakthrough volume of 200 μl and theoretical plates 0.38-1.15. It was proposed that the formats of future electrospun nanofiber sorbent based SPE devices will be guided by mechanical strength of the polymer. The study classified electrospun polymer fibers into two as polystyrene type (relatively low mechanical strength) and nylon type (relatively high mechanical strength).
- Full Text:
- Date Issued: 2012
- Authors: Chigome, Samuel , Samuel Chigome
- Date: 2012 , 2012-03-26
- Subjects: Nanofibers -- Research Electrospinning -- Research Sorbents -- Research Extraction (Chemistry) -- Research
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:4314 , http://hdl.handle.net/10962/d1004972
- Description: The work described in the thesis seeks to lay a foundation for a better understanding of the use of electrospun nanofibers as a sorbent material. Three miniaturised electrospun nanofiber based solid phase extraction devices were fabricated. For the first two, 10 mg of electrospun polystyrene fibers were used as a sorbent bed for a micro column SPE device (8 mm bed height in a 200 μl pipette tip) and a disk (I) SPE device (5 mm 1 mm sorbent bed in a 1000 μl SPE barrel). While for the third, 4.6 mg of electrospun nylon nanofibers were used as a sorbent bed for a disk (II) SPE device, (sorbent bed consisting of 5 5 mm 350 μm stacked disks in a 500 μl SPE barrel). Corticosteroids were employed as model analytes for performance evaluation of the fabricated SPE devices. Quantitative recoveries (45.5-124.29 percent) were achieved for all SPE devices at a loading volume of 100 μl and analyte concentration of 500 ng ml-1. Three mathematical models; the Boltzmann, Weibull five parameter and the Sigmoid three parameter were employed to describe the break through profiles of each of the sorbent beds. The micro column SPE device exhibited a breakthrough volume of 1400 μl, and theoretical plates (7.98-9.1) while disk (I) SPE device exhibited 400-500 μl and 1.39-2.82 respectively. Disk (II) SPE device exhibited a breakthrough volume of 200 μl and theoretical plates 0.38-1.15. It was proposed that the formats of future electrospun nanofiber sorbent based SPE devices will be guided by mechanical strength of the polymer. The study classified electrospun polymer fibers into two as polystyrene type (relatively low mechanical strength) and nylon type (relatively high mechanical strength).
- Full Text:
- Date Issued: 2012
Translating Heaney: a study of Sweeney astray, The cure at Troy, and Beowulf
- Van der Woude, Peter William
- Authors: Van der Woude, Peter William
- Date: 2007
- Subjects: Heaney, Seamus, 1939- Criticism and interpretation Heaney, Seamus, 1939- Sweeney astray Sophocles. Philoctetes -- Translations History and criticism Beowulf -- Translations History and criticism Buile Suibhne Geilt Buile Suibhne Geilt -- Translations History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2213 , http://hdl.handle.net/10962/d1002256
- Description: This thesis examines Seamus Heaney’s approach to translation with specific reference to Sweeney Astray, The Cure at Troy, and Beowulf. An assessment of Heaney’s translations, and the ways in which they relate to his poetry, is essential to an understanding of his work as a poet. This thesis demonstrates the centrality of translation to Heaney’s oeuvre as an effective means to comment on his Northern Irish socio-political context without producing political propaganda. Translation is a valuable means for Heaney to elucidate his contemporary experience by considering it in terms of the recorded past captured within his chosen translations. Instead of comparing the three translations with their original texts, this thesis concentrates on Heaney’s translations as a continuation of his own creative work and as catalysts for further poetry. The translations are explored in chronological order to allow a sense of Heaney’s development as a translator and his efforts to remain critically attuned to the Northern Irish political situation. The first chapter examines Heaney’s translation of the Gaelic poem Buile Suibhne, which is published as Sweeney Astray. In this first major act of translation Heaney recognises the political role that translation is able to play. He draws attention to the protagonist’s sense of cultural ease in both Britain and Ireland, which he argues is exemplary for the people of Ulster and renders the narrative particularly accessible to a Northern Irish readership due to his anglicisation of the text, which is intended as a reminder to both Catholics and Protestants of their shared identity as Irishmen. The second chapter focuses on Heaney’s translation of Sophocles’ Philoctetes, entitled The Cure at Troy. Heaney’s translation contextualises the Ancient Greek concern for personal integrity in the face of political necessity, a situation relevant to his own complex relationship with Northern Irish politics. His alterations to the text accentuate the positive aspects of the play, suggesting the very real possibility of social change within the seemingly constant violence of Northern Ireland. The third chapter explores Heaney’s engagement with the Anglo-Saxon epic poem, Beowulf, as a means of coming to terms with the complex history of Irish colonisation through language. This chapter assesses Heaney’s incorporation of Irish dialectal words into his translation, which lend the poem political weight, and yet prove to be contextually appropriate, rendering Heaney’s Beowulf a masterpiece of readability and subtle political commentary.
- Full Text:
- Date Issued: 2007
- Authors: Van der Woude, Peter William
- Date: 2007
- Subjects: Heaney, Seamus, 1939- Criticism and interpretation Heaney, Seamus, 1939- Sweeney astray Sophocles. Philoctetes -- Translations History and criticism Beowulf -- Translations History and criticism Buile Suibhne Geilt Buile Suibhne Geilt -- Translations History and criticism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2213 , http://hdl.handle.net/10962/d1002256
- Description: This thesis examines Seamus Heaney’s approach to translation with specific reference to Sweeney Astray, The Cure at Troy, and Beowulf. An assessment of Heaney’s translations, and the ways in which they relate to his poetry, is essential to an understanding of his work as a poet. This thesis demonstrates the centrality of translation to Heaney’s oeuvre as an effective means to comment on his Northern Irish socio-political context without producing political propaganda. Translation is a valuable means for Heaney to elucidate his contemporary experience by considering it in terms of the recorded past captured within his chosen translations. Instead of comparing the three translations with their original texts, this thesis concentrates on Heaney’s translations as a continuation of his own creative work and as catalysts for further poetry. The translations are explored in chronological order to allow a sense of Heaney’s development as a translator and his efforts to remain critically attuned to the Northern Irish political situation. The first chapter examines Heaney’s translation of the Gaelic poem Buile Suibhne, which is published as Sweeney Astray. In this first major act of translation Heaney recognises the political role that translation is able to play. He draws attention to the protagonist’s sense of cultural ease in both Britain and Ireland, which he argues is exemplary for the people of Ulster and renders the narrative particularly accessible to a Northern Irish readership due to his anglicisation of the text, which is intended as a reminder to both Catholics and Protestants of their shared identity as Irishmen. The second chapter focuses on Heaney’s translation of Sophocles’ Philoctetes, entitled The Cure at Troy. Heaney’s translation contextualises the Ancient Greek concern for personal integrity in the face of political necessity, a situation relevant to his own complex relationship with Northern Irish politics. His alterations to the text accentuate the positive aspects of the play, suggesting the very real possibility of social change within the seemingly constant violence of Northern Ireland. The third chapter explores Heaney’s engagement with the Anglo-Saxon epic poem, Beowulf, as a means of coming to terms with the complex history of Irish colonisation through language. This chapter assesses Heaney’s incorporation of Irish dialectal words into his translation, which lend the poem political weight, and yet prove to be contextually appropriate, rendering Heaney’s Beowulf a masterpiece of readability and subtle political commentary.
- Full Text:
- Date Issued: 2007
An evaluation of the quality of customer service provided to large power users by Eskom in the Eastern Cape
- Authors: Caza, Akhona Nobusi
- Date: 2014
- Subjects: Eskom (Firm) -- Evaluation , Customer services -- South Africa -- Eastern Cape -- Evaluation , Customer services -- South Africa -- Eastern Cape -- Quality control , SERVQUAL (Service quality framework) , Gap analysis (Planning)
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:862 , http://hdl.handle.net/10962/d1020610
- Description: The aim of this research is to evaluate the level of service quality provided by Eskom to its Large Power User (LPU) customer segment in the Eastern Cape. The research uses the SERVQUAL model in order to assess the customers’ expectations and perceptions of the service provided by Eskom. This evaluation report comprises three sections. Section one consists of (a) a review of service quality literature that exists and is applied to Eskom where relevant, (b) a summary of the method used to conduct the research, (c) the research findings, and (d) a discussion of the research findings and recommendations. Section two consists of a review of the key concepts identified for this study as follows: (a) defining customer service quality by looking at the concepts of the customer, service, quality and the dimensions of quality, (b) the importance of service quality, (c) the components of service quality in Eskom, (d) models of service quality, and (e) the SERVQUAL model used in this study. Section three consists of the detail of the research methodology used to conduct this study. The Gap Model of Service Quality (Parasuraman et al., 1985:44) is evaluated in order to understand the gaps between expected and perceived service. The provider gap (Zeithaml et al., 2006: 34) is also reviewed in order to identify the gaps that occur within the organisation. An extensive review of customer service quality models is undertaken before a discussion of the SERVQUAL model, which was used in this evaluation study, is provided. The researcher adopted the critical realism research paradigm and quantitative data was collected from a sample of 120 Eskom customers within the LPU customer segment in the Eastern Cape. These customers were randomly selected from the Eskom Customer Care and Billing database and comprised customers from Port Elizabeth, Aliwal North, Mthatha and East London Areas within the Eastern Cape. The data was collected online through a questionnaire which was based on SERVQUAL and modified for electricity services. The quantitative data obtained from the study is presented in the form of tables and graphs created from the data obtained from the 45 customers who responded to the questionnaire. The gaps between LPU customer perceptions and expectations were calculated for the five SERVQUAL dimensions. The research identifies the existing gaps in the service delivered by Eskom; this is based on the perceptions and expectations of the LPU customers in the Eastern Cape, who participated in the study. The results reveal that gaps exist between LPU customer perceptions and their expectations of the service provided by Eskom in the Eastern Cape. The key findings reveal that the largest gaps are within the reliability and empathy dimensions and the smallest gap is in the tangibles dimension. The recommendations were made on the basis of the gaps which were identified and these focus on the training of the front line staff responsible for servicing customers. It is recommended that this training should include an overview of the organisation’s policies and procedures to enable employees to respond adequately to customer queries. Recommendation is also made on training staff to interact with customers effectively in order to resolve customer queries satisfactorily. Finally, it is recommended that regular assessments of the existing customer service quality levels are conducted in order for the organisation to remain aware of the current customer perceptions and expectations
- Full Text:
- Date Issued: 2014
- Authors: Caza, Akhona Nobusi
- Date: 2014
- Subjects: Eskom (Firm) -- Evaluation , Customer services -- South Africa -- Eastern Cape -- Evaluation , Customer services -- South Africa -- Eastern Cape -- Quality control , SERVQUAL (Service quality framework) , Gap analysis (Planning)
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:862 , http://hdl.handle.net/10962/d1020610
- Description: The aim of this research is to evaluate the level of service quality provided by Eskom to its Large Power User (LPU) customer segment in the Eastern Cape. The research uses the SERVQUAL model in order to assess the customers’ expectations and perceptions of the service provided by Eskom. This evaluation report comprises three sections. Section one consists of (a) a review of service quality literature that exists and is applied to Eskom where relevant, (b) a summary of the method used to conduct the research, (c) the research findings, and (d) a discussion of the research findings and recommendations. Section two consists of a review of the key concepts identified for this study as follows: (a) defining customer service quality by looking at the concepts of the customer, service, quality and the dimensions of quality, (b) the importance of service quality, (c) the components of service quality in Eskom, (d) models of service quality, and (e) the SERVQUAL model used in this study. Section three consists of the detail of the research methodology used to conduct this study. The Gap Model of Service Quality (Parasuraman et al., 1985:44) is evaluated in order to understand the gaps between expected and perceived service. The provider gap (Zeithaml et al., 2006: 34) is also reviewed in order to identify the gaps that occur within the organisation. An extensive review of customer service quality models is undertaken before a discussion of the SERVQUAL model, which was used in this evaluation study, is provided. The researcher adopted the critical realism research paradigm and quantitative data was collected from a sample of 120 Eskom customers within the LPU customer segment in the Eastern Cape. These customers were randomly selected from the Eskom Customer Care and Billing database and comprised customers from Port Elizabeth, Aliwal North, Mthatha and East London Areas within the Eastern Cape. The data was collected online through a questionnaire which was based on SERVQUAL and modified for electricity services. The quantitative data obtained from the study is presented in the form of tables and graphs created from the data obtained from the 45 customers who responded to the questionnaire. The gaps between LPU customer perceptions and expectations were calculated for the five SERVQUAL dimensions. The research identifies the existing gaps in the service delivered by Eskom; this is based on the perceptions and expectations of the LPU customers in the Eastern Cape, who participated in the study. The results reveal that gaps exist between LPU customer perceptions and their expectations of the service provided by Eskom in the Eastern Cape. The key findings reveal that the largest gaps are within the reliability and empathy dimensions and the smallest gap is in the tangibles dimension. The recommendations were made on the basis of the gaps which were identified and these focus on the training of the front line staff responsible for servicing customers. It is recommended that this training should include an overview of the organisation’s policies and procedures to enable employees to respond adequately to customer queries. Recommendation is also made on training staff to interact with customers effectively in order to resolve customer queries satisfactorily. Finally, it is recommended that regular assessments of the existing customer service quality levels are conducted in order for the organisation to remain aware of the current customer perceptions and expectations
- Full Text:
- Date Issued: 2014
The positive contribution of the religious life to the life of the church
- Authors: Clucas, Robert Stephen
- Date: 1957
- Subjects: Religion , Christian life , Anglicans
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1291 , http://hdl.handle.net/10962/d1014701
- Description: The positive contribution of the religious life to the life of the church as a whole. Chapter one: presuppositions of an Anglican, with particular views of ministry, Bible, church and sacraments. Presupposition as regards friendship acknowledgement of influence of C.S. Lewis. Prejudices from outside. The old prejudices, their causes and historical foundation. New prejudices in the present-day world. Chapter two. Misunderstandings from within. The religious life as a higher way of perfection. False view of detachment. Celibacy of the priesthood. Correctives to those misunderstandings. Chapter three. The temporal and the temporary. Contributions which religious life makes continually in a fallen world. The temporary contributions made at different times. Chapter four. The eternal and the inward. Eternal aspects of the threefold vow and of the worship of community life. Contribution of religious throughout the ages to ascetic and mystical theology, which builds on inner life of the Christian. Chapter five. Conclusions and speculations. Re-examination of definition of the religious life. Side developments of the religious life. Three protestant communities. The religious life and present-day problems.
- Full Text:
- Date Issued: 1957
- Authors: Clucas, Robert Stephen
- Date: 1957
- Subjects: Religion , Christian life , Anglicans
- Language: English
- Type: Thesis , Bachelor , BDiv
- Identifier: vital:1291 , http://hdl.handle.net/10962/d1014701
- Description: The positive contribution of the religious life to the life of the church as a whole. Chapter one: presuppositions of an Anglican, with particular views of ministry, Bible, church and sacraments. Presupposition as regards friendship acknowledgement of influence of C.S. Lewis. Prejudices from outside. The old prejudices, their causes and historical foundation. New prejudices in the present-day world. Chapter two. Misunderstandings from within. The religious life as a higher way of perfection. False view of detachment. Celibacy of the priesthood. Correctives to those misunderstandings. Chapter three. The temporal and the temporary. Contributions which religious life makes continually in a fallen world. The temporary contributions made at different times. Chapter four. The eternal and the inward. Eternal aspects of the threefold vow and of the worship of community life. Contribution of religious throughout the ages to ascetic and mystical theology, which builds on inner life of the Christian. Chapter five. Conclusions and speculations. Re-examination of definition of the religious life. Side developments of the religious life. Three protestant communities. The religious life and present-day problems.
- Full Text:
- Date Issued: 1957
How the South African print media cover economics news: a study of inflation news in four newspapers, 1999-2001
- Authors: Kula, Momelezi Michael
- Date: 2004
- Subjects: Journalism, Commercial -- South Africa , Inflation (Finance) -- South Africa , South Africa -- Newspapers , Mass media -- Political aspects -- Africa , Democracy , Journalism -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3450 , http://hdl.handle.net/10962/d1002904 , Journalism, Commercial -- South Africa , Inflation (Finance) -- South Africa , South Africa -- Newspapers , Mass media -- Political aspects -- Africa , Democracy , Journalism -- Social aspects
- Description: There is a considerable amount of literature arguing that economics and business journalism is growing. This subfield of journalism is important as economics issues impact on everyday lives of the people. Media have an important role to inform people about the economy and give them a voice to take part in public debates. The down side though is that economics journalism is criticised for not serving the public well in this aspect. Evidence suggests that economics journalism lost its critical character and that there is closer in economics debates. Using content analysis, this study examines coverage of inflation as reported by South African print media. Three major findings emerged: 1) Evidence shows that there are a variety of cases of inflation. 2) There are also similarities among newspapers on what they view as causing inflation. 3) However, media do not draw sources from all sectors of society. The elite, who are educated people and government officials, are over-accessed while the ordinary citizens - although also affected by inflation – are marginalized. Company and government sources top source lists in the media. It is argued that sources play an important role in shaping the news content. They do so by identifying problems and prescribing potential solutions. They set parameters and define terms of reference. However, media also play a mediating role. They do so by selecting sources and structuring sources in stories. They may chose to quote or report what their sources say and even comment on it. This study concludes that in South Africa ordinary citizens have no voices in economics debates. Media used bureaucratic sources only and that is a consonant agenda on inflation coverage amongst newspapers. The heavy reliance on bureaucratic sources and the exclusion of some sectors of society in sources lists raises questions about impartiality of these sources on issues relating to their organisations and institutions. These are not viable sources that could provide information that could expose abuse of power.
- Full Text:
- Date Issued: 2004
- Authors: Kula, Momelezi Michael
- Date: 2004
- Subjects: Journalism, Commercial -- South Africa , Inflation (Finance) -- South Africa , South Africa -- Newspapers , Mass media -- Political aspects -- Africa , Democracy , Journalism -- Social aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3450 , http://hdl.handle.net/10962/d1002904 , Journalism, Commercial -- South Africa , Inflation (Finance) -- South Africa , South Africa -- Newspapers , Mass media -- Political aspects -- Africa , Democracy , Journalism -- Social aspects
- Description: There is a considerable amount of literature arguing that economics and business journalism is growing. This subfield of journalism is important as economics issues impact on everyday lives of the people. Media have an important role to inform people about the economy and give them a voice to take part in public debates. The down side though is that economics journalism is criticised for not serving the public well in this aspect. Evidence suggests that economics journalism lost its critical character and that there is closer in economics debates. Using content analysis, this study examines coverage of inflation as reported by South African print media. Three major findings emerged: 1) Evidence shows that there are a variety of cases of inflation. 2) There are also similarities among newspapers on what they view as causing inflation. 3) However, media do not draw sources from all sectors of society. The elite, who are educated people and government officials, are over-accessed while the ordinary citizens - although also affected by inflation – are marginalized. Company and government sources top source lists in the media. It is argued that sources play an important role in shaping the news content. They do so by identifying problems and prescribing potential solutions. They set parameters and define terms of reference. However, media also play a mediating role. They do so by selecting sources and structuring sources in stories. They may chose to quote or report what their sources say and even comment on it. This study concludes that in South Africa ordinary citizens have no voices in economics debates. Media used bureaucratic sources only and that is a consonant agenda on inflation coverage amongst newspapers. The heavy reliance on bureaucratic sources and the exclusion of some sectors of society in sources lists raises questions about impartiality of these sources on issues relating to their organisations and institutions. These are not viable sources that could provide information that could expose abuse of power.
- Full Text:
- Date Issued: 2004