When birthing makes the news : the depiction of women as a newsworthy item in Die Burger (Oos-Kaap)
- Authors: Preller, Cindy
- Date: 2010
- Subjects: Mass media and women -- South Africa Childbirth -- South Africa Women -- South Africa Die Burger (Port Elizabeth, South Africa) Journalism -- South Africa -- 21st century Mass media -- Moral and ethical aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3480 , http://hdl.handle.net/10962/d1002935
- Description: The thesis “When birthing makes the news: the depiction of women as a newsworthy item in Die Burger (Oos-Kaap)” analyses a common, yet complex news topic in the South African print media due to the sensitive, often sensationalised, nature of the topic. The private experience of birthing is featured more and more in the public domain of newspapers because of widespread service delivery problems within the South African health department. Focussing on the Eastern Cape, I examine the representation of birthing in Die Burger (Oos-Kaap) in texts printed between 2005 and 2007, and scrutinise the media’s monitorial role of a self-appointed public hero acting on behalf of the women, to expose the poor conditions at government hospitals, specifically in the Nelson Mandela Bay region. How the women and their bodies are reported on, creates a discursive tension between the negative portrayals of the birthing women and the monitorial role of the media. The news values of sensationalism and profit are achieved with visceral representations of the reproductive functions of the birthing women. A poststructuralist feminist theoretical framework reveals discourses that perpetuate race, class and gender inequalities in the apparently socially-concerned sample of texts. A Critical discourse analysis (CDA) provides an approach and method to inform a close textual analysis of both the lexical and visual elements of the texts. The discourses in the sample differed from text to text. Despite these differences, the monitorial role of the media is still achieved. My research argues that acting in the public interest with sensationalist copy is still acting in the public interest. I conclude that it is not easy for newspapers to separate sensationalism from accountability. Media practitioners should be aware of their role in constructing women’s identities and be particularly thoughtful when reporting on birthing. In doing so, this research aims to improve the manner in which women and their bodies are reported on within the news industry.
- Full Text:
- Date Issued: 2010
- Authors: Preller, Cindy
- Date: 2010
- Subjects: Mass media and women -- South Africa Childbirth -- South Africa Women -- South Africa Die Burger (Port Elizabeth, South Africa) Journalism -- South Africa -- 21st century Mass media -- Moral and ethical aspects -- South Africa
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3480 , http://hdl.handle.net/10962/d1002935
- Description: The thesis “When birthing makes the news: the depiction of women as a newsworthy item in Die Burger (Oos-Kaap)” analyses a common, yet complex news topic in the South African print media due to the sensitive, often sensationalised, nature of the topic. The private experience of birthing is featured more and more in the public domain of newspapers because of widespread service delivery problems within the South African health department. Focussing on the Eastern Cape, I examine the representation of birthing in Die Burger (Oos-Kaap) in texts printed between 2005 and 2007, and scrutinise the media’s monitorial role of a self-appointed public hero acting on behalf of the women, to expose the poor conditions at government hospitals, specifically in the Nelson Mandela Bay region. How the women and their bodies are reported on, creates a discursive tension between the negative portrayals of the birthing women and the monitorial role of the media. The news values of sensationalism and profit are achieved with visceral representations of the reproductive functions of the birthing women. A poststructuralist feminist theoretical framework reveals discourses that perpetuate race, class and gender inequalities in the apparently socially-concerned sample of texts. A Critical discourse analysis (CDA) provides an approach and method to inform a close textual analysis of both the lexical and visual elements of the texts. The discourses in the sample differed from text to text. Despite these differences, the monitorial role of the media is still achieved. My research argues that acting in the public interest with sensationalist copy is still acting in the public interest. I conclude that it is not easy for newspapers to separate sensationalism from accountability. Media practitioners should be aware of their role in constructing women’s identities and be particularly thoughtful when reporting on birthing. In doing so, this research aims to improve the manner in which women and their bodies are reported on within the news industry.
- Full Text:
- Date Issued: 2010
Aspects of the biology and fisheries of an economically important sparid Dentex macrophthalmus (Bloch 1791) in the Namibe province, Angola
- Potts, Warren M, Inácio, L A, Santos, Carmen V D, Richardson, Timothy J, Sauer, Warwick H H
- Authors: Potts, Warren M , Inácio, L A , Santos, Carmen V D , Richardson, Timothy J , Sauer, Warwick H H
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123096 , vital:35405 , https://doi.org/10.2989/1814232X.2010.538160
- Description: Dentex macrophthalmus is a small, commercially important sparid fish that is abundant in the deeper waters (range 50–500 m) of the Mediterranean Sea (Trunov 1970), the North-West African shelf (Goode and Bean 1896, Fowler 1936), including the Cape Verde and Canary Islands, and the south-eastern Atlantic from the Equator to just south of Lüderitz (27°40′ S) (Trunov 1970). Because of its high abundance, it is of considerable economic importance and is captured in large numbers in both artisanal and commercial fisheries in many countries. Although it is the most important artisanal species along the entire Angolan coast, it is most abundant in the southern region (Kilongo et al. 2007). Despite its economic importance in Angola and elsewhere, relatively little is known on its abundance, fisheries and biology.
- Full Text:
- Date Issued: 2010
- Authors: Potts, Warren M , Inácio, L A , Santos, Carmen V D , Richardson, Timothy J , Sauer, Warwick H H
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123096 , vital:35405 , https://doi.org/10.2989/1814232X.2010.538160
- Description: Dentex macrophthalmus is a small, commercially important sparid fish that is abundant in the deeper waters (range 50–500 m) of the Mediterranean Sea (Trunov 1970), the North-West African shelf (Goode and Bean 1896, Fowler 1936), including the Cape Verde and Canary Islands, and the south-eastern Atlantic from the Equator to just south of Lüderitz (27°40′ S) (Trunov 1970). Because of its high abundance, it is of considerable economic importance and is captured in large numbers in both artisanal and commercial fisheries in many countries. Although it is the most important artisanal species along the entire Angolan coast, it is most abundant in the southern region (Kilongo et al. 2007). Despite its economic importance in Angola and elsewhere, relatively little is known on its abundance, fisheries and biology.
- Full Text:
- Date Issued: 2010
Reproductive biology of a riverine cyprinid, Labeo umbratus (Teleostei: Cyprinidae), in small South African reservoirs
- Potts, Warren M, Booth, Anthony J, Hecht, Thomas, Andrew, Timothy G
- Authors: Potts, Warren M , Booth, Anthony J , Hecht, Thomas , Andrew, Timothy G
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125854 , vital:35826 , https://doi.10.2989/16085910509503849
- Description: The reproductive and recruitment characteristics of moggel, Labeo umbratus, populations were examined in four small South African reservoirs. Reproduction, characterised by an extended spawning season, high fecundity, short incubation time and rapid larval development, appears to be ideally suited to the highly variable environment of small reservoirs. Evidence suggested that L. umbratus spawns in the reservoirs. In two reservoirs where samples were conducted monthly, GSI (gonado-somatic index) was positively correlated with both water temperature and day length, whilst the CPUE (catch per unit effort) of juveniles was not related to any environmental variable. The success of moggel spawning appeared to increase when there was early spring and consistent summer rainfall.
- Full Text:
- Date Issued: 2010
- Authors: Potts, Warren M , Booth, Anthony J , Hecht, Thomas , Andrew, Timothy G
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/125854 , vital:35826 , https://doi.10.2989/16085910509503849
- Description: The reproductive and recruitment characteristics of moggel, Labeo umbratus, populations were examined in four small South African reservoirs. Reproduction, characterised by an extended spawning season, high fecundity, short incubation time and rapid larval development, appears to be ideally suited to the highly variable environment of small reservoirs. Evidence suggested that L. umbratus spawns in the reservoirs. In two reservoirs where samples were conducted monthly, GSI (gonado-somatic index) was positively correlated with both water temperature and day length, whilst the CPUE (catch per unit effort) of juveniles was not related to any environmental variable. The success of moggel spawning appeared to increase when there was early spring and consistent summer rainfall.
- Full Text:
- Date Issued: 2010
Does reservoir trophic status influence the feeding and growth of the sharptooth catfish, Clarias gariepinus (Teleostei: Clariidae)?
- Potts, Warren M, Hecht, Thomas, Andrew, Timothy G
- Authors: Potts, Warren M , Hecht, Thomas , Andrew, Timothy G
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124309 , vital:35591 , https://doi.org/10.2989/A JAS.2008.33.2.6.503
- Description: The diet and growth of sharptooth catfish, Clarias gariepinus, in an oligotrophic system (Kat River Reservoir, Eastern Cape, South Africa) were compared to those in a eutrophic system (Laing Reservoir, Eastern Cape) to determine if the trophic status of a waterbody had an effect on the growth rate of the species. In order of importance, the diet of catfish in Kat River Reservoir consisted of fish, insects, zooplankton, plant material and other items, while the diet of catfish in Laing Reservoir consisted of fish, plant material, zooplankton, other vertebrates and insects. The diets of catfish in the two reservoirs had a similarity index of 68.1% and there was no significant difference in their nutritional value. Fish prey was the most important dietary component in both reservoirs. Temperature regime and zooplankton and zoobenthos density were similar in both systems. However, fish prey density was significantly higher in the eutrophic Laing Reservoir and catfish grew significantly faster in that system. The slower growth rate in Kat River Reservoir was attributed to the higher energy costs associated with the capture of fish prey, which was less abundant than in Laing Reservoir. Trophic status therefore had an indirect effect on catfish growth by influencing the availability of fish prey.
- Full Text:
- Date Issued: 2010
- Authors: Potts, Warren M , Hecht, Thomas , Andrew, Timothy G
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/124309 , vital:35591 , https://doi.org/10.2989/A JAS.2008.33.2.6.503
- Description: The diet and growth of sharptooth catfish, Clarias gariepinus, in an oligotrophic system (Kat River Reservoir, Eastern Cape, South Africa) were compared to those in a eutrophic system (Laing Reservoir, Eastern Cape) to determine if the trophic status of a waterbody had an effect on the growth rate of the species. In order of importance, the diet of catfish in Kat River Reservoir consisted of fish, insects, zooplankton, plant material and other items, while the diet of catfish in Laing Reservoir consisted of fish, plant material, zooplankton, other vertebrates and insects. The diets of catfish in the two reservoirs had a similarity index of 68.1% and there was no significant difference in their nutritional value. Fish prey was the most important dietary component in both reservoirs. Temperature regime and zooplankton and zoobenthos density were similar in both systems. However, fish prey density was significantly higher in the eutrophic Laing Reservoir and catfish grew significantly faster in that system. The slower growth rate in Kat River Reservoir was attributed to the higher energy costs associated with the capture of fish prey, which was less abundant than in Laing Reservoir. Trophic status therefore had an indirect effect on catfish growth by influencing the availability of fish prey.
- Full Text:
- Date Issued: 2010
The valuation of campus built heritage from the student perspective: comparative analysis of Rhodes University in South Africa and St. Mary’s College of Maryland in the United States
- Poor, Joan P, Snowball, Jeanette D
- Authors: Poor, Joan P , Snowball, Jeanette D
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67488 , vital:29102 , https://doi.org/10.1016/j.culher.2009.05.002
- Description: Pre-print , Many universities and colleges around the world have done extensive surveys of their campus built heritage resources. A detailed description and accounting of a campus's built heritage, landscape heritage and archaeology, are often used for historic preservation planning, and sustaining built culture is also an important aspect of campus master planning of future buildings. Such institutions of higher education have deep historical roots, in Europe it is not uncommon for buildings to be dated prior to the sixteenth century. In countries where European colonies were established, institutions of higher education often date to the eighteenth and early nineteenth centuries. Once students have arrived at their chosen campus, however, except for perhaps the first week orientation rituals, do the students actually develop ties to their campus built heritage? This research investigates the knowledge students possess of their respective campus built heritage and the importance of built heritage as a legacy to them. Two institutions are included in this study in an effort of draw comparative assessments. A student questionnaire was administered at Rhodes University in South Africa and St. Mary's College of Maryland in the United States during April 2008. Results indicate students on both campuses place positive intrinsic value on their respective campus built heritage. Just over half (52%) of Rhodes students and about 68% of St. Mary's students were willing to pay some positive amount to protect campus built heritage. Empirical probit model results combining the data from both institutions found that current student knowledge of their respective campus built heritage did not positively relate to the value they place on preservation, even though the visual identity was significant for students and influenced their decision to attend the particular institution. The lack of significance regarding a racial variable coefficient estimate suggests that the use of an institution's visual identity in terms of built heritage may have important marketing implications, particularly in cases where universities or colleges are trying to attract students from more diverse backgrounds. We found no significant relationships between willingness to pay to preserve an institution's built heritage and the demographic variables included in our empirical model. Fundraising data analysis includes positive willingness to pay for conserving built heritage, yet funding for new construction was not significant.
- Full Text:
- Date Issued: 2010
- Authors: Poor, Joan P , Snowball, Jeanette D
- Date: 2010
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/67488 , vital:29102 , https://doi.org/10.1016/j.culher.2009.05.002
- Description: Pre-print , Many universities and colleges around the world have done extensive surveys of their campus built heritage resources. A detailed description and accounting of a campus's built heritage, landscape heritage and archaeology, are often used for historic preservation planning, and sustaining built culture is also an important aspect of campus master planning of future buildings. Such institutions of higher education have deep historical roots, in Europe it is not uncommon for buildings to be dated prior to the sixteenth century. In countries where European colonies were established, institutions of higher education often date to the eighteenth and early nineteenth centuries. Once students have arrived at their chosen campus, however, except for perhaps the first week orientation rituals, do the students actually develop ties to their campus built heritage? This research investigates the knowledge students possess of their respective campus built heritage and the importance of built heritage as a legacy to them. Two institutions are included in this study in an effort of draw comparative assessments. A student questionnaire was administered at Rhodes University in South Africa and St. Mary's College of Maryland in the United States during April 2008. Results indicate students on both campuses place positive intrinsic value on their respective campus built heritage. Just over half (52%) of Rhodes students and about 68% of St. Mary's students were willing to pay some positive amount to protect campus built heritage. Empirical probit model results combining the data from both institutions found that current student knowledge of their respective campus built heritage did not positively relate to the value they place on preservation, even though the visual identity was significant for students and influenced their decision to attend the particular institution. The lack of significance regarding a racial variable coefficient estimate suggests that the use of an institution's visual identity in terms of built heritage may have important marketing implications, particularly in cases where universities or colleges are trying to attract students from more diverse backgrounds. We found no significant relationships between willingness to pay to preserve an institution's built heritage and the demographic variables included in our empirical model. Fundraising data analysis includes positive willingness to pay for conserving built heritage, yet funding for new construction was not significant.
- Full Text:
- Date Issued: 2010
The investigation of alternative processes for the oxidation of phenol
- Authors: Pongoma, Basanda
- Date: 2010
- Subjects: Phenol , Hydroquinone
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10381 , http://hdl.handle.net/10948/1479 , Phenol , Hydroquinone
- Description: The electrochemical oxidation of phenol can be considered as an important process for either producing value added products such as hydroquinone and catechol or for the removal of the phenol from waste water streams to form carbon dioxide. This process had been extensively studied with the main focus on type of anode material used. Even though the anode material could be made from a range of materials, this study focused on using PbO2 as anode material that was made by using Pb-acid battery principles in designing a microporous electrode. In this study, the focus was on using lead dioxide as an anode material that was made by using the formation principles used in the manufacturing of Pb-acid batteries. This allowed for the construction of an electrochemical flow-through micro-porous reactor that contained PbO2 as the anode and Pb as the cathode, allowing for a solution containing phenol to flow through the cell continuously. By applying a suitable potential across the cell, the almost complete oxidation of phenol would occur to form benzoquinone, which was followed by the sequential reduction to other products such as hydroquinone and catechol. The system was shown to be made up of tightly packed micro-porous material that had a very high surface area-to-volume ratio. The study showed that between 80 to 90 percent successful conversion of a 50 mM solution of phenol could be achieved by optimizing the continuous flow process of up to 500 minutes. The main reaction product from this process was hydroquinone, of up to 60 percent with a number of the minor products of which not all could be identified. In order to utilize the characteristics of this reactor system, its design and reaction conditions such as applied potential, phenol concentration, co-solvent concentration and support electrolyte concentration were investigated to optimize the convection of phenol and the yield of hydroquinone.
- Full Text:
- Date Issued: 2010
- Authors: Pongoma, Basanda
- Date: 2010
- Subjects: Phenol , Hydroquinone
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:10381 , http://hdl.handle.net/10948/1479 , Phenol , Hydroquinone
- Description: The electrochemical oxidation of phenol can be considered as an important process for either producing value added products such as hydroquinone and catechol or for the removal of the phenol from waste water streams to form carbon dioxide. This process had been extensively studied with the main focus on type of anode material used. Even though the anode material could be made from a range of materials, this study focused on using PbO2 as anode material that was made by using Pb-acid battery principles in designing a microporous electrode. In this study, the focus was on using lead dioxide as an anode material that was made by using the formation principles used in the manufacturing of Pb-acid batteries. This allowed for the construction of an electrochemical flow-through micro-porous reactor that contained PbO2 as the anode and Pb as the cathode, allowing for a solution containing phenol to flow through the cell continuously. By applying a suitable potential across the cell, the almost complete oxidation of phenol would occur to form benzoquinone, which was followed by the sequential reduction to other products such as hydroquinone and catechol. The system was shown to be made up of tightly packed micro-porous material that had a very high surface area-to-volume ratio. The study showed that between 80 to 90 percent successful conversion of a 50 mM solution of phenol could be achieved by optimizing the continuous flow process of up to 500 minutes. The main reaction product from this process was hydroquinone, of up to 60 percent with a number of the minor products of which not all could be identified. In order to utilize the characteristics of this reactor system, its design and reaction conditions such as applied potential, phenol concentration, co-solvent concentration and support electrolyte concentration were investigated to optimize the convection of phenol and the yield of hydroquinone.
- Full Text:
- Date Issued: 2010
The influence of talent management on strategy
- Authors: Piti, Mfundo
- Date: 2010
- Subjects: Personnel management , Ability , Organizational effectiveness , Employees -- Recruiting
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8623 , http://hdl.handle.net/10948/1501 , Personnel management , Ability , Organizational effectiveness , Employees -- Recruiting
- Description: Research indicates that effective talent management is essential in achieving organisational excellence and is a driving force for business success. This study focused on investigating VWSA Group Service division’s employee talent management process as seen or perceived by employees. The employee attitude and understanding of the 2010 strategy was also evaluated. In achieving this objective a literature review on talent management was conducted and questions formulated which formed part of the survey. The questionnaire was self-administered and sent to the stratified random sample of individuals who were eligible for survey. The main findings of this research are that the 2010 strategy was well received by the employees and that seventy seven percent of the respondents who took part in the study do understand the 2010 strategy and what it is all about. The study also highlighted that employees believe Project 1 in the 2010 strategy will be achieved. Employees were uncertain that compensation and leadership style are variables that influence or promote talent management. From the literature review it is explained that in order for talent management to be effective it must be aligned to organisational strategy. Various recommendations were made, for example conducting of skills gap analysis with a view to identify skills employees need to possess in order to meet the objectives of the 2010 strategy. Another recommendation was the formation of talent pools from which to recruit high talented staff and whose skills will be required to meet the objectives of the organisational strategy. A final point emanating from the study, is that when it comes to talent management and achieving organisational strategy it is not business as usual. Companies need to be aware of brand profiles most desired by highly talented individuals; they also need to be aware of various recruiting strategies as well as acknowledge that different employees are at different levels of the motivational hierarchy.
- Full Text:
- Date Issued: 2010
- Authors: Piti, Mfundo
- Date: 2010
- Subjects: Personnel management , Ability , Organizational effectiveness , Employees -- Recruiting
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8623 , http://hdl.handle.net/10948/1501 , Personnel management , Ability , Organizational effectiveness , Employees -- Recruiting
- Description: Research indicates that effective talent management is essential in achieving organisational excellence and is a driving force for business success. This study focused on investigating VWSA Group Service division’s employee talent management process as seen or perceived by employees. The employee attitude and understanding of the 2010 strategy was also evaluated. In achieving this objective a literature review on talent management was conducted and questions formulated which formed part of the survey. The questionnaire was self-administered and sent to the stratified random sample of individuals who were eligible for survey. The main findings of this research are that the 2010 strategy was well received by the employees and that seventy seven percent of the respondents who took part in the study do understand the 2010 strategy and what it is all about. The study also highlighted that employees believe Project 1 in the 2010 strategy will be achieved. Employees were uncertain that compensation and leadership style are variables that influence or promote talent management. From the literature review it is explained that in order for talent management to be effective it must be aligned to organisational strategy. Various recommendations were made, for example conducting of skills gap analysis with a view to identify skills employees need to possess in order to meet the objectives of the 2010 strategy. Another recommendation was the formation of talent pools from which to recruit high talented staff and whose skills will be required to meet the objectives of the organisational strategy. A final point emanating from the study, is that when it comes to talent management and achieving organisational strategy it is not business as usual. Companies need to be aware of brand profiles most desired by highly talented individuals; they also need to be aware of various recruiting strategies as well as acknowledge that different employees are at different levels of the motivational hierarchy.
- Full Text:
- Date Issued: 2010
Politics in the slum: a view from South Africa
- Authors: Pithouse, Richard, 1970-
- Date: 2010
- Language: English
- Type: Article
- Identifier: vital:6209 , http://hdl.handle.net/10962/d1008579
- Description: [From introduction]The modern state, and its civil society, have always been comfortable with workers in their allotted place – be it formed around the immediate needs of industrial production, like the migrant workers hostels in apartheid South Africa or contemporary Dubai, or an attempt at creating a haven, like the suburban home which has its roots in the gendered and raced class compromise reached in North America after the Second World War. When there has been a part of the population rendered or considered superfluous to the immediate needs of production there has been a degree of comfort with the inevitably bounded spaces into which these people have been abandoned or contained – prisons, ghettos, Bantustans etc. But both the modern state and civil society have always been acutely uncomfortable with that part of the ‘dangerous class’ - vagabonds or squatters - that are, by virtue of their occupation of space outside of state regulation, by definition out of place and threatening to domination constructed, along with other lines of force, on the ordering of space.
- Full Text:
- Date Issued: 2010
- Authors: Pithouse, Richard, 1970-
- Date: 2010
- Language: English
- Type: Article
- Identifier: vital:6209 , http://hdl.handle.net/10962/d1008579
- Description: [From introduction]The modern state, and its civil society, have always been comfortable with workers in their allotted place – be it formed around the immediate needs of industrial production, like the migrant workers hostels in apartheid South Africa or contemporary Dubai, or an attempt at creating a haven, like the suburban home which has its roots in the gendered and raced class compromise reached in North America after the Second World War. When there has been a part of the population rendered or considered superfluous to the immediate needs of production there has been a degree of comfort with the inevitably bounded spaces into which these people have been abandoned or contained – prisons, ghettos, Bantustans etc. But both the modern state and civil society have always been acutely uncomfortable with that part of the ‘dangerous class’ - vagabonds or squatters - that are, by virtue of their occupation of space outside of state regulation, by definition out of place and threatening to domination constructed, along with other lines of force, on the ordering of space.
- Full Text:
- Date Issued: 2010
The devastation of Haiti
- Authors: Pithouse, Richard, 1970-
- Date: 2010
- Language: English
- Type: Article
- Identifier: vital:6207 , http://hdl.handle.net/10962/d1008577
- Description: [From introduction] The devastation of Haiti is not a simple matter of bad luck. Earthquakes, like storms and epidemics, hit the poor with vastly more force than the rich. Much of the press coverage of the catastrophe in Haiti has wilfully disregarded the history of how Haiti was made poor and kept poor by, above all, the same American elites that are now dispensing charity, soldiers and advice. Racism has often been close to the surface or even grinning hideously far above it
- Full Text:
- Date Issued: 2010
- Authors: Pithouse, Richard, 1970-
- Date: 2010
- Language: English
- Type: Article
- Identifier: vital:6207 , http://hdl.handle.net/10962/d1008577
- Description: [From introduction] The devastation of Haiti is not a simple matter of bad luck. Earthquakes, like storms and epidemics, hit the poor with vastly more force than the rich. Much of the press coverage of the catastrophe in Haiti has wilfully disregarded the history of how Haiti was made poor and kept poor by, above all, the same American elites that are now dispensing charity, soldiers and advice. Racism has often been close to the surface or even grinning hideously far above it
- Full Text:
- Date Issued: 2010
Causes of decoupling between larval supply and settlement and consequences for understanding recruitment and population connectivity
- Pineda, Jesus, Porri, Francesca, Starczak, Victroria, Blythe, Jonathan
- Authors: Pineda, Jesus , Porri, Francesca , Starczak, Victroria , Blythe, Jonathan
- Date: 2010
- Language: English
- Type: Article
- Identifier: vital:6869 , http://hdl.handle.net/10962/d1011501
- Description: Marine broadcast spawners have two-phase life cycles, with pelagic larvae and benthic adults. Larval supply and settlement link these two phases and are crucial for the persistence of marine populations. Mainly due to the complexity in sampling larval supply accurately, many researchers use settlement as a proxy for larval supply. Larval supply is a constraining variable for settlement because, without larval supply, there is no settlement. Larval supply and settlement may not be well correlated, however, and settlement may not consistently estimate larval supply. This paper explores the argument that larval supply (i.e., larval abundance near settlement sites) may not relate linearly to settlement. We review the relationship between larval supply and settlement, from estimates and biases in larval supply sampling, to non-behavioral and behavioral components, including small-scale hydrodynamics, competency, gregarious behavior, intensification of settlement, lunar periodicity, predation and cannibalism. Physical and structural processes coupled with behavior, such as small-scale hydrodynamics and intensification of settlement, sometimes result in under- or overestimation of larval supply, where it is predicted from a linear relationship with settlement. Although settlement is a function of larval supply, spatial and temporal processes interact with larval behavior to distort the relationship between larval supply and settlement, and when these distortions act consistently in time and space, they cause biased estimates of larval supply from settlement data. Most of the examples discussed here suggest that behavior is the main source of the decoupling between larval supply and settlement because larval behavior affects the vertical distribution of larvae, the response of larvae to hydrodynamics, intensification of settlement, gregariousness, predation and cannibalism. Thus, larval behavior seems to limit broad generalizations on the regulation of settlement by larval supply. Knowledge of the relationship is further hindered by the lack of a well founded theoretical relationship between the two variables. The larval supply–settlement transition may have strong general consequences for population connectivity, since larval supply is a result of larval transport, and settlement constrains recruitment. Thus, measuring larval supply and settlement effectively allows more accurate quantification and understanding of larval transport, recruitment and population connectivity.
- Full Text:
- Date Issued: 2010
- Authors: Pineda, Jesus , Porri, Francesca , Starczak, Victroria , Blythe, Jonathan
- Date: 2010
- Language: English
- Type: Article
- Identifier: vital:6869 , http://hdl.handle.net/10962/d1011501
- Description: Marine broadcast spawners have two-phase life cycles, with pelagic larvae and benthic adults. Larval supply and settlement link these two phases and are crucial for the persistence of marine populations. Mainly due to the complexity in sampling larval supply accurately, many researchers use settlement as a proxy for larval supply. Larval supply is a constraining variable for settlement because, without larval supply, there is no settlement. Larval supply and settlement may not be well correlated, however, and settlement may not consistently estimate larval supply. This paper explores the argument that larval supply (i.e., larval abundance near settlement sites) may not relate linearly to settlement. We review the relationship between larval supply and settlement, from estimates and biases in larval supply sampling, to non-behavioral and behavioral components, including small-scale hydrodynamics, competency, gregarious behavior, intensification of settlement, lunar periodicity, predation and cannibalism. Physical and structural processes coupled with behavior, such as small-scale hydrodynamics and intensification of settlement, sometimes result in under- or overestimation of larval supply, where it is predicted from a linear relationship with settlement. Although settlement is a function of larval supply, spatial and temporal processes interact with larval behavior to distort the relationship between larval supply and settlement, and when these distortions act consistently in time and space, they cause biased estimates of larval supply from settlement data. Most of the examples discussed here suggest that behavior is the main source of the decoupling between larval supply and settlement because larval behavior affects the vertical distribution of larvae, the response of larvae to hydrodynamics, intensification of settlement, gregariousness, predation and cannibalism. Thus, larval behavior seems to limit broad generalizations on the regulation of settlement by larval supply. Knowledge of the relationship is further hindered by the lack of a well founded theoretical relationship between the two variables. The larval supply–settlement transition may have strong general consequences for population connectivity, since larval supply is a result of larval transport, and settlement constrains recruitment. Thus, measuring larval supply and settlement effectively allows more accurate quantification and understanding of larval transport, recruitment and population connectivity.
- Full Text:
- Date Issued: 2010
The ultrastructure and histology of the defensive epidermal glands of some marine pulmonates
- Authors: Pinchuck, Shirley Clare
- Date: 2010
- Subjects: Snails -- Histology , Snails -- Physiology , Snails -- Cytology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5793 , http://hdl.handle.net/10962/d1005481 , Snails -- Histology , Snails -- Physiology , Snails -- Cytology
- Description: Histology and electron microscopy were used to describe and compare the structure of the dorso-lateral pedal defensive glands of three species of marine Basommatophora, Siphonaria capensis, S. serrata and S. gigas. All three species possessed multi-cellular glands that were larger and most abundant in S. capensis. In S. capensis and S. serrata, defensive glands were composed of two types (type I and II) of large secretory cells filled with product and some irregularly shaped support cells that surrounded a central lumen. The product of both cell types was produced by organelles confined to the bases of the cells. The entire gland was surrounded by a well developed layer of smooth muscle and collagen. Type I cells stained positively for neutral and sulphated mucins, and at the transmission electron microscope level the product had a reticulated appearance. By contrast type II gland cells stained very positively for acidic mucins and the secretory product was formed as large granular vesicles. The product from both types of cell, which appeared to be secreted by holocrine secretion, mixed in the lumen of the duct. Individuals of Siphonaria gigas had two types of lateral pedal glands, a large multi-cellular type and a tubular unicellular gland. The multi-cellular glands, which were surrounded by poorly developed muscle, contained one type of gland cell that stained for neutral and sulphated mucins only, as well as some support cells. The tubular glands contained a heterogeneous product that stained very positively for neutral and sulphated mucins. In addition two species of shell-less marine Systellommatophorans, Onchidella capensis and O. hildae, were examined. Onchidellids also posses large marginal, multi-cellular, epidermal glands that produce a repugnatorial secretion. Like the multi-cellular epidermal glands of siphonariids, those of onchidellids are surrounded by layers of smooth muscle. The muscular capsule was particularly well developed in both species of onchidellid, but more so in O. hildae. In addition, this study has shown that unlike siphonariids, muscle fibres run between the gland cells of O. capensis and O. hildae. Unlike siphonariids, onchidellids have a layer of epithelial cells lining the lumen of the gland. The well developed muscle layer and the strands of muscle running between the different gland cells indicates that the glands can be constricted to forcibly propel their secretions along the length of the duct and away from the body of the animal. Based on their product, glands of O. capensis were comprised of five different types of secretory cell and O. hildae only four. Histological and histochemical staining of the glands of showed that the secretory product is largely made up of acidic mucopolysaccharides and neutral and sulphated mucins. A single species from the order Eupulmonata, Trimusculus costatus, was examined and the glands were very different to the species from the siphonariids and onchidellids. Trimusculus costatus does not have large multi-cellular glands encapsulated in a well developed muscle layer, but based on their cell contents, three different types of large unicellular gland cell can be recognised. The glands of T. costatus gave positive results for acid, neutral and sulphated mucins, but negative results for carboxylated mucin. It is possible that the mucous secreted by T. costatus is also an anti-bacterial agent and whilst not totally eliminating bacteria may prevent the accumulation of epibionts on these sedentary limpets. The acidic or sulphated nature of the secretions may help in this role. The defensive mucous secretions of Siphonaria and Onchidella contain polypropionate derivatives, whilst the active ingredients of Trimusculus mucus have been identified as labdane diterpenes, similar to those produced by opisthobranchs. The structure of the glands thought to produce these repungnatorial secretions is very different, with the glands of T. costatus resembling those of the opisthobranchs.
- Full Text:
- Date Issued: 2010
- Authors: Pinchuck, Shirley Clare
- Date: 2010
- Subjects: Snails -- Histology , Snails -- Physiology , Snails -- Cytology
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5793 , http://hdl.handle.net/10962/d1005481 , Snails -- Histology , Snails -- Physiology , Snails -- Cytology
- Description: Histology and electron microscopy were used to describe and compare the structure of the dorso-lateral pedal defensive glands of three species of marine Basommatophora, Siphonaria capensis, S. serrata and S. gigas. All three species possessed multi-cellular glands that were larger and most abundant in S. capensis. In S. capensis and S. serrata, defensive glands were composed of two types (type I and II) of large secretory cells filled with product and some irregularly shaped support cells that surrounded a central lumen. The product of both cell types was produced by organelles confined to the bases of the cells. The entire gland was surrounded by a well developed layer of smooth muscle and collagen. Type I cells stained positively for neutral and sulphated mucins, and at the transmission electron microscope level the product had a reticulated appearance. By contrast type II gland cells stained very positively for acidic mucins and the secretory product was formed as large granular vesicles. The product from both types of cell, which appeared to be secreted by holocrine secretion, mixed in the lumen of the duct. Individuals of Siphonaria gigas had two types of lateral pedal glands, a large multi-cellular type and a tubular unicellular gland. The multi-cellular glands, which were surrounded by poorly developed muscle, contained one type of gland cell that stained for neutral and sulphated mucins only, as well as some support cells. The tubular glands contained a heterogeneous product that stained very positively for neutral and sulphated mucins. In addition two species of shell-less marine Systellommatophorans, Onchidella capensis and O. hildae, were examined. Onchidellids also posses large marginal, multi-cellular, epidermal glands that produce a repugnatorial secretion. Like the multi-cellular epidermal glands of siphonariids, those of onchidellids are surrounded by layers of smooth muscle. The muscular capsule was particularly well developed in both species of onchidellid, but more so in O. hildae. In addition, this study has shown that unlike siphonariids, muscle fibres run between the gland cells of O. capensis and O. hildae. Unlike siphonariids, onchidellids have a layer of epithelial cells lining the lumen of the gland. The well developed muscle layer and the strands of muscle running between the different gland cells indicates that the glands can be constricted to forcibly propel their secretions along the length of the duct and away from the body of the animal. Based on their product, glands of O. capensis were comprised of five different types of secretory cell and O. hildae only four. Histological and histochemical staining of the glands of showed that the secretory product is largely made up of acidic mucopolysaccharides and neutral and sulphated mucins. A single species from the order Eupulmonata, Trimusculus costatus, was examined and the glands were very different to the species from the siphonariids and onchidellids. Trimusculus costatus does not have large multi-cellular glands encapsulated in a well developed muscle layer, but based on their cell contents, three different types of large unicellular gland cell can be recognised. The glands of T. costatus gave positive results for acid, neutral and sulphated mucins, but negative results for carboxylated mucin. It is possible that the mucous secreted by T. costatus is also an anti-bacterial agent and whilst not totally eliminating bacteria may prevent the accumulation of epibionts on these sedentary limpets. The acidic or sulphated nature of the secretions may help in this role. The defensive mucous secretions of Siphonaria and Onchidella contain polypropionate derivatives, whilst the active ingredients of Trimusculus mucus have been identified as labdane diterpenes, similar to those produced by opisthobranchs. The structure of the glands thought to produce these repungnatorial secretions is very different, with the glands of T. costatus resembling those of the opisthobranchs.
- Full Text:
- Date Issued: 2010
An evaluation of the local economic development strategy: the case of the Nelson Mandela Bay Municipality
- Authors: Pillay, Sareesha
- Date: 2010
- Subjects: Local Economic Development (Programme) , Economic development -- South Africa -- Eastern Cape , Economic policy -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8207 , http://hdl.handle.net/10948/1160 , Local Economic Development (Programme) , Economic development -- South Africa -- Eastern Cape , Economic policy -- South Africa -- Eastern Cape
- Description: The central objective of the research study was to evaluate the 2020 Citywide Economic Growth and Development strategy, with reference to the Nelson Mandela Bay Municipality (NMBM). The Citywide Economic Growth and Development strategy for the NMBM was developed in 2004 in relation to the need for Local Economic Development. The need for Local Economic Development (LED) has been mandated by the national government of South Africa as prescribed in the direction toward developmental local government post - 2000. The National Framework for Local Economic Development in South Africa serves as a strategic implementation guide for municipalities. The National Framework for Local Economic Development provides a supportive foundation to assist municipalities such as the Nelson Mandela Bay Municipality in improving its economic development through concentrations on suggested actions. Through support for municipal Local Economic Development strategies, the objective of Local Economic Development was to offer local government, private sectors, non - profit organisations and local communities the opportunity to work together to improve the local economy. The aim has thus been to enhance competitiveness and encourage inclusive sustainable growth. The 2020 Citywide Economic Growth and Development strategy for the Nelson Mandela Bay Municipality includes its strategic approach to promote sustainable growth within its specified municipal environment. Formulation of the strategy includes descriptions of sector strategies as a mechanism to promote transformation and improved economic development in a sustainable manner. Content Analysis and the case study methods were utilised to evaluate the 2020 Citywide Economic Growth and Development strategy in the undertaking of the research study as a way of examining the formulation of the Local Economic Development strategy of the Nelson Mandela Bay Municipality, in order to determine v the shortcomings in Local Economic Development as brought about by ineffective policy formulation process. Discourse Analysis was also used to understand the policy foundations as influenced by the previous apartheid regime and its accompanied injustices on the citizens of South Africa. The brief descriptions of major economic developments and sector strategies for the Nelson Mandela Bay Municipality shows the detachment of policy content from clear strategic action plans has depicted an incongruence in efficiency and sustainable development. This has placed developmental policy formulation under scrutinisation and evaluation. The findings indicate that there is a need for revision and/ or reformulation of the current 2020 Citywide Economic Growth and Development strategy of the Nelson Mandela Bay Municipality in promotion of effective sustainable development and an improved local economy. The impact of a failure to revise and rework the strategy has detrimental effects on the promotion of an effective and efficient economy in the Nelson Mandela Bay Municipality. Therefore, the lack of detail within the 2020 Citywide Economic Growth and Development strategy must be tackled by policy formulators to ensure economic growth and an alignment with the objectives as contained in the national mandate for economic development.
- Full Text:
- Date Issued: 2010
- Authors: Pillay, Sareesha
- Date: 2010
- Subjects: Local Economic Development (Programme) , Economic development -- South Africa -- Eastern Cape , Economic policy -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MPhil
- Identifier: vital:8207 , http://hdl.handle.net/10948/1160 , Local Economic Development (Programme) , Economic development -- South Africa -- Eastern Cape , Economic policy -- South Africa -- Eastern Cape
- Description: The central objective of the research study was to evaluate the 2020 Citywide Economic Growth and Development strategy, with reference to the Nelson Mandela Bay Municipality (NMBM). The Citywide Economic Growth and Development strategy for the NMBM was developed in 2004 in relation to the need for Local Economic Development. The need for Local Economic Development (LED) has been mandated by the national government of South Africa as prescribed in the direction toward developmental local government post - 2000. The National Framework for Local Economic Development in South Africa serves as a strategic implementation guide for municipalities. The National Framework for Local Economic Development provides a supportive foundation to assist municipalities such as the Nelson Mandela Bay Municipality in improving its economic development through concentrations on suggested actions. Through support for municipal Local Economic Development strategies, the objective of Local Economic Development was to offer local government, private sectors, non - profit organisations and local communities the opportunity to work together to improve the local economy. The aim has thus been to enhance competitiveness and encourage inclusive sustainable growth. The 2020 Citywide Economic Growth and Development strategy for the Nelson Mandela Bay Municipality includes its strategic approach to promote sustainable growth within its specified municipal environment. Formulation of the strategy includes descriptions of sector strategies as a mechanism to promote transformation and improved economic development in a sustainable manner. Content Analysis and the case study methods were utilised to evaluate the 2020 Citywide Economic Growth and Development strategy in the undertaking of the research study as a way of examining the formulation of the Local Economic Development strategy of the Nelson Mandela Bay Municipality, in order to determine v the shortcomings in Local Economic Development as brought about by ineffective policy formulation process. Discourse Analysis was also used to understand the policy foundations as influenced by the previous apartheid regime and its accompanied injustices on the citizens of South Africa. The brief descriptions of major economic developments and sector strategies for the Nelson Mandela Bay Municipality shows the detachment of policy content from clear strategic action plans has depicted an incongruence in efficiency and sustainable development. This has placed developmental policy formulation under scrutinisation and evaluation. The findings indicate that there is a need for revision and/ or reformulation of the current 2020 Citywide Economic Growth and Development strategy of the Nelson Mandela Bay Municipality in promotion of effective sustainable development and an improved local economy. The impact of a failure to revise and rework the strategy has detrimental effects on the promotion of an effective and efficient economy in the Nelson Mandela Bay Municipality. Therefore, the lack of detail within the 2020 Citywide Economic Growth and Development strategy must be tackled by policy formulators to ensure economic growth and an alignment with the objectives as contained in the national mandate for economic development.
- Full Text:
- Date Issued: 2010
Establishing a framework for an integrated, holistic, community based educational support structure
- Authors: Pieterse, Glynis
- Date: 2010
- Subjects: Curriculum planning -- South Africa , Competency-based education -- South Africa , Inclusive education -- South Africa , Teachers -- Training of -- South Africa
- Language: English
- Type: Thesis , Doctoral , DEd
- Identifier: vital:9510 , http://hdl.handle.net/10948/1158 , Curriculum planning -- South Africa , Competency-based education -- South Africa , Inclusive education -- South Africa , Teachers -- Training of -- South Africa
- Description: The restructuring of South African education, after the country’s first non-racial democratic elections in 1994, coincided, with the development of inclusive education in international education. The implementation of inclusive education, internationally, was guided by the Salamanca Statement of 1994 and the international “Education for All” movement. Education White Paper 6 (2001), serves as the blueprint for implementing inclusive education in South Africa. This investigation argues that the successful implementation of the inclusive education system is dependent on the development of an effective, quality education support structure. Such an educational support structure is one that should reflect a holistic, integrated and community based approach to support. Based on this presupposition, the primary research aim of this investigation was the establishment of a framework for a holistic, integrated, community based education support structure to do justice to learners with mainly external barriers to learning (LSEN) and educators finding themselves in an inclusive classroom in Nelson Mandela Metropole and surrounding areas. In order to understand how such a framework can be established, the following guiding secondary research questions were posed: • What was the international perspective on the implementation of inclusive education? • What was the nature of educational provisioning for learners with barriers to learning (LSEN) before 1994, and the implementation of inclusive education policies thereafter? • What were the practical implications of implementing Education White Paper 6 (Department of Education, 2001) for the support roles of education support providers in South African schools? • What is the support challenges facing learners and educators within inclusive classrooms in Nelson Mandela Metropole and surrounding areas? • What support structures are currently available at the different levels of the education system? This investigation was completed from a phenomenological perspective. A constructivist approach to data collection and data analysis was followed, as the investigator did not attempt to prove or disprove theory, but rather to understand the phenomena under investigation from the viewpoint of participants. iv The sample, selected by means of non-probability purposive and theoretical sampling techniques, included 120 educators from 85 different schools in Nelson Mandela Metropole and surrounding areas. In addition, 4 education officials, 4 members of community organisations and 2 teacher union representatives were selected to the sample. Through the process of data analysis, accomplished through the principles inherent to grounded theory, two themes and sub-themes were identified. The investigator presented a discussion on the two themes and sub-themes. This discussion was followed by a proposal for the establishment of a framework for a holistic, integrated, community based educational support structure. The investigation was completed by recommendations related to the primary and secondary research questions. The investigation concluded that the implementation of inclusive education is severely hampered by strong exclusionary factors that are principally related to socio-economic backlogs that have not been successfully addressed by the current government.
- Full Text:
- Date Issued: 2010
- Authors: Pieterse, Glynis
- Date: 2010
- Subjects: Curriculum planning -- South Africa , Competency-based education -- South Africa , Inclusive education -- South Africa , Teachers -- Training of -- South Africa
- Language: English
- Type: Thesis , Doctoral , DEd
- Identifier: vital:9510 , http://hdl.handle.net/10948/1158 , Curriculum planning -- South Africa , Competency-based education -- South Africa , Inclusive education -- South Africa , Teachers -- Training of -- South Africa
- Description: The restructuring of South African education, after the country’s first non-racial democratic elections in 1994, coincided, with the development of inclusive education in international education. The implementation of inclusive education, internationally, was guided by the Salamanca Statement of 1994 and the international “Education for All” movement. Education White Paper 6 (2001), serves as the blueprint for implementing inclusive education in South Africa. This investigation argues that the successful implementation of the inclusive education system is dependent on the development of an effective, quality education support structure. Such an educational support structure is one that should reflect a holistic, integrated and community based approach to support. Based on this presupposition, the primary research aim of this investigation was the establishment of a framework for a holistic, integrated, community based education support structure to do justice to learners with mainly external barriers to learning (LSEN) and educators finding themselves in an inclusive classroom in Nelson Mandela Metropole and surrounding areas. In order to understand how such a framework can be established, the following guiding secondary research questions were posed: • What was the international perspective on the implementation of inclusive education? • What was the nature of educational provisioning for learners with barriers to learning (LSEN) before 1994, and the implementation of inclusive education policies thereafter? • What were the practical implications of implementing Education White Paper 6 (Department of Education, 2001) for the support roles of education support providers in South African schools? • What is the support challenges facing learners and educators within inclusive classrooms in Nelson Mandela Metropole and surrounding areas? • What support structures are currently available at the different levels of the education system? This investigation was completed from a phenomenological perspective. A constructivist approach to data collection and data analysis was followed, as the investigator did not attempt to prove or disprove theory, but rather to understand the phenomena under investigation from the viewpoint of participants. iv The sample, selected by means of non-probability purposive and theoretical sampling techniques, included 120 educators from 85 different schools in Nelson Mandela Metropole and surrounding areas. In addition, 4 education officials, 4 members of community organisations and 2 teacher union representatives were selected to the sample. Through the process of data analysis, accomplished through the principles inherent to grounded theory, two themes and sub-themes were identified. The investigator presented a discussion on the two themes and sub-themes. This discussion was followed by a proposal for the establishment of a framework for a holistic, integrated, community based educational support structure. The investigation was completed by recommendations related to the primary and secondary research questions. The investigation concluded that the implementation of inclusive education is severely hampered by strong exclusionary factors that are principally related to socio-economic backlogs that have not been successfully addressed by the current government.
- Full Text:
- Date Issued: 2010
Israel and Palestine: some critical international relations perspectives on the 'two-state' solution
- Authors: Pienaar, Ashwin Mark
- Date: 2010
- Subjects: Arab-Israeli conflict Jewish-Arab relations Nationalism -- Israel Nationalism -- Palestine Land settlement -- West Bank Land settlement -- Gaza Strip Realism Liberalism Palestinian Arabs -- Politics and government -- 20th century Israel -- Politics and government -- 20th century Israel -- Foreign relations -- Palestine Palestine -- Foreign relations -- Israel
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2820 , http://hdl.handle.net/10962/d1003030
- Description: This research questions whether Israel and Palestine should be divided into two states. Viewed through the International Relations (IR) theories of Realism and Liberalism, the ‘Two-State’ solution is the orthodox policy for Israel and Palestine. But Israelis and Palestinians are interspersed and share many of the same resources making it difficult to create two states. So, this research critiques the aforementioned IR theories which underpin the ‘Two-State’ solution. The conclusion reached is that there ought to be new thinking on how to resolve the Israel-Palestine issue.
- Full Text:
- Date Issued: 2010
Israel and Palestine: some critical international relations perspectives on the 'two-state' solution
- Authors: Pienaar, Ashwin Mark
- Date: 2010
- Subjects: Arab-Israeli conflict Jewish-Arab relations Nationalism -- Israel Nationalism -- Palestine Land settlement -- West Bank Land settlement -- Gaza Strip Realism Liberalism Palestinian Arabs -- Politics and government -- 20th century Israel -- Politics and government -- 20th century Israel -- Foreign relations -- Palestine Palestine -- Foreign relations -- Israel
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:2820 , http://hdl.handle.net/10962/d1003030
- Description: This research questions whether Israel and Palestine should be divided into two states. Viewed through the International Relations (IR) theories of Realism and Liberalism, the ‘Two-State’ solution is the orthodox policy for Israel and Palestine. But Israelis and Palestinians are interspersed and share many of the same resources making it difficult to create two states. So, this research critiques the aforementioned IR theories which underpin the ‘Two-State’ solution. The conclusion reached is that there ought to be new thinking on how to resolve the Israel-Palestine issue.
- Full Text:
- Date Issued: 2010
An evaluation of the impact of corruption, economic status and political influence on the Malawian construction industry
- Authors: Phiri, Mulima Anaclet
- Date: 2010
- Subjects: Construction industry -- Malawi
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9688 , http://hdl.handle.net/10948/1155 , Construction industry -- Malawi
- Description: The key objectives of this MSc (Construction Management) dissertation are to evaluate the negative impact of: corruption; political influence, and the poor economy on the construction industry; in order to gain insight regarding the management of the sector to achieve the desired project deliverables, which are: • Achievement of a functional fit for purpose built environment, which is to the clients’ requirements; • Achievement of a Financially viable product in line with the clients’ budget; • Achievement of a successful and timely completion, and • Achievement of the required quality standard of the final product. To achieve the above mentioned project deliverables, the study entailed the following prominent findings: • There is a need to manage political greed in the distribution of development projects, and functionality of the product to suit the client / community; • There is a need to manage, mitigate and combat corruption in order to diminish the dominance of unscrupulous contractors over others, and to achieve clients’ desired quality standards; • There is a requirement to manage the construction policy formulation process and governance of laws and regulations to revamp the retrogression of the industry, and • There is a requirement to manage project cost to significantly boost the ailing economy. In conclusion, the study evaluates the Malawi construction industry status and improvements there on. The management of the industry’s phenomena and mind set is of paramount importance to the success of the findings in this study. Recommendations to improve the status quo relative to the findings are: to train all active stakeholders in construction management courses; a national initiative to sensitise the community regarding the powers granted to them, as an electorate of the stakeholders; to change the phenomenon of and mindset relative to bribes, and finally to derive a passion for construction and for the associated built environment.
- Full Text:
- Date Issued: 2010
- Authors: Phiri, Mulima Anaclet
- Date: 2010
- Subjects: Construction industry -- Malawi
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9688 , http://hdl.handle.net/10948/1155 , Construction industry -- Malawi
- Description: The key objectives of this MSc (Construction Management) dissertation are to evaluate the negative impact of: corruption; political influence, and the poor economy on the construction industry; in order to gain insight regarding the management of the sector to achieve the desired project deliverables, which are: • Achievement of a functional fit for purpose built environment, which is to the clients’ requirements; • Achievement of a Financially viable product in line with the clients’ budget; • Achievement of a successful and timely completion, and • Achievement of the required quality standard of the final product. To achieve the above mentioned project deliverables, the study entailed the following prominent findings: • There is a need to manage political greed in the distribution of development projects, and functionality of the product to suit the client / community; • There is a need to manage, mitigate and combat corruption in order to diminish the dominance of unscrupulous contractors over others, and to achieve clients’ desired quality standards; • There is a requirement to manage the construction policy formulation process and governance of laws and regulations to revamp the retrogression of the industry, and • There is a requirement to manage project cost to significantly boost the ailing economy. In conclusion, the study evaluates the Malawi construction industry status and improvements there on. The management of the industry’s phenomena and mind set is of paramount importance to the success of the findings in this study. Recommendations to improve the status quo relative to the findings are: to train all active stakeholders in construction management courses; a national initiative to sensitise the community regarding the powers granted to them, as an electorate of the stakeholders; to change the phenomenon of and mindset relative to bribes, and finally to derive a passion for construction and for the associated built environment.
- Full Text:
- Date Issued: 2010
The applicability of the promotion of Administrative Justice Act in review of CCMA arbitration awards
- Phanyane, Namadzavho California
- Authors: Phanyane, Namadzavho California
- Date: 2010
- Subjects: Arbitration (Administrative law) -- South Africa , Arbitration and award -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10219 , http://hdl.handle.net/10948/1282 , Arbitration (Administrative law) -- South Africa , Arbitration and award -- Law and legislation -- South Africa
- Description: South Africa’s employment law has undergone more frequent and dynamic changes than any area of the law, in recent years. The ability of employers and employees to regulate their respective rights and duties vis-à-vis each other by independent agreement has been progressively whittled down by statutory intervention. In so limiting the capacity of parties to the employment relationship to regulate the nature of their relationship, South Africa has followed development in Western industrialised nations. Against this background, the drafters of the Labour Relations Act1 (LRA), as amended, proposed a comprehensive framework of law governing the collective relations between employers and trade unions in all sectors of the economy. The LRA2 created a specialised set of forums and tribunals to deal with labour and employment related matters. It established Bargaining Councils, the Commission for Conciliation Mediation and Arbitration (CCMA), the Labour Court (LC) and the Labour Appeal Court (LAC). It also created procedures designed to accomplish the objective of simple, inexpensive and accessible resolution of labour disputes. In redesigning labour law, the legislature decided that some disputes between employers and employees should be dealt with by arbitrators and others by judges. It is this distinction that resulted in the creation of the CCMA and the Labour Court to perform arbitration and adjudication respectively. The result of adjudication is generally subject to appeal to a higher court. The result of arbitration is generally subject to review. Arbitration was given statutory recognition in South Africa by the Arbitration Act3. That Act provides a framework within which parties in dispute may if they wish appoint their own “judge” and supply him or her with their terms of reference tailored to their needs. With the foregoing in mind, the purpose of this work is the provision of a selection of landmark cases that dealt with the review function of CCMA awards. This selection 1 Act 66 of 1995 as amended comprises of landmark judgments of the different courts of the land. The study uses, as it departure point, legislative framework to elicit the extent to which review is extended to the litigants. Apart from looking at the legislative provisions towards review grounds, reference is made to specific landmark judgments that have an effect on this subject in order to provide a comprehensive and explicit picture of how CCMA arbitration awards may be taken on review. This study focuses on substantive law developed by the Labour Court, High Court, Supreme Court of Appeal and finally the Constitutional Court. This is informed by the very nature and scope of the study because any concentration on procedural and evidentiary aspects of review could lead to failure to achieve the objectives of the study. It looks at specific South African case law, judgments of the courts and the jurisprudence in the field of employment law so that the reader is presented with a clearer picture of recent developments in addressing review of arbitration awards. The concluding remarks are drawn from a variety of approaches used by the authorities in the field of employment law in dealing with review of CCMA arbitration awards and issues for further research are highlighted.
- Full Text:
- Date Issued: 2010
- Authors: Phanyane, Namadzavho California
- Date: 2010
- Subjects: Arbitration (Administrative law) -- South Africa , Arbitration and award -- Law and legislation -- South Africa
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10219 , http://hdl.handle.net/10948/1282 , Arbitration (Administrative law) -- South Africa , Arbitration and award -- Law and legislation -- South Africa
- Description: South Africa’s employment law has undergone more frequent and dynamic changes than any area of the law, in recent years. The ability of employers and employees to regulate their respective rights and duties vis-à-vis each other by independent agreement has been progressively whittled down by statutory intervention. In so limiting the capacity of parties to the employment relationship to regulate the nature of their relationship, South Africa has followed development in Western industrialised nations. Against this background, the drafters of the Labour Relations Act1 (LRA), as amended, proposed a comprehensive framework of law governing the collective relations between employers and trade unions in all sectors of the economy. The LRA2 created a specialised set of forums and tribunals to deal with labour and employment related matters. It established Bargaining Councils, the Commission for Conciliation Mediation and Arbitration (CCMA), the Labour Court (LC) and the Labour Appeal Court (LAC). It also created procedures designed to accomplish the objective of simple, inexpensive and accessible resolution of labour disputes. In redesigning labour law, the legislature decided that some disputes between employers and employees should be dealt with by arbitrators and others by judges. It is this distinction that resulted in the creation of the CCMA and the Labour Court to perform arbitration and adjudication respectively. The result of adjudication is generally subject to appeal to a higher court. The result of arbitration is generally subject to review. Arbitration was given statutory recognition in South Africa by the Arbitration Act3. That Act provides a framework within which parties in dispute may if they wish appoint their own “judge” and supply him or her with their terms of reference tailored to their needs. With the foregoing in mind, the purpose of this work is the provision of a selection of landmark cases that dealt with the review function of CCMA awards. This selection 1 Act 66 of 1995 as amended comprises of landmark judgments of the different courts of the land. The study uses, as it departure point, legislative framework to elicit the extent to which review is extended to the litigants. Apart from looking at the legislative provisions towards review grounds, reference is made to specific landmark judgments that have an effect on this subject in order to provide a comprehensive and explicit picture of how CCMA arbitration awards may be taken on review. This study focuses on substantive law developed by the Labour Court, High Court, Supreme Court of Appeal and finally the Constitutional Court. This is informed by the very nature and scope of the study because any concentration on procedural and evidentiary aspects of review could lead to failure to achieve the objectives of the study. It looks at specific South African case law, judgments of the courts and the jurisprudence in the field of employment law so that the reader is presented with a clearer picture of recent developments in addressing review of arbitration awards. The concluding remarks are drawn from a variety of approaches used by the authorities in the field of employment law in dealing with review of CCMA arbitration awards and issues for further research are highlighted.
- Full Text:
- Date Issued: 2010
Impact of new media technologies on the production of economics news in South Africa : a case study of Fin24.com (www.fin24.com)
- Authors: Phakathi, Bekezela
- Date: 2010
- Subjects: Mass media -- Technological innovations -- South Africa -- Case studies Mass media and technology -- South Africa -- Case studies Journalism, Commercial -- South Africa -- Case studies Online journalism -- South Africa -- Case studies Digital media -- South Africa -- Case studies Communication and technology -- South Africa -- Case studies Social networks -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3510 , http://hdl.handle.net/10962/d1007631
- Description: New media technology continues to provide journalists with sophisticated tools that are changing news processing and gathering. Economics journalists in particular have grasped the possibilities offered by new media technologies. Thus, this paper offers a theoretical and practical look at how new media technologies have impacted the production and processing of economics news in South Africa, with a particular focus on Fin24.com which is South Africa's biggest online economics news publication. Using qualitative research methods and the case-study approach, this thesis documents the impact of new media technologies on the production of economics news. It draws on Witschge and Nygren's (2009) framework which describes how new media technologies change the nature in which news is produced and processed. New media technologies in this study will refer to the Internet, particularly search engines like Google, social networking sites such as Twitter and Facebook, Blogs as well as mobile telephony. Economics journalism will here refer to all coverage of economics and business-related news. This is because the case study (Fin24.com) covers both business and economics journalism by strict definition. Findings reveal that these new media technologies have not only changed economics newsgathering and processing but also journalistic routines. The findings generally show that new media technologies make it easier for economics journalists to produce the news quickly and efficiently. Indeed, the most distinguishing characteristic of new media is its overall speed, which is both challenging and attractive. The findings also reveal that new media technologies within a newsroom can be problematic in a number of ways, mainly raising issues of accuracy and credibility thus challenging the profession of economics journalism more than ever.
- Full Text:
- Date Issued: 2010
- Authors: Phakathi, Bekezela
- Date: 2010
- Subjects: Mass media -- Technological innovations -- South Africa -- Case studies Mass media and technology -- South Africa -- Case studies Journalism, Commercial -- South Africa -- Case studies Online journalism -- South Africa -- Case studies Digital media -- South Africa -- Case studies Communication and technology -- South Africa -- Case studies Social networks -- South Africa -- Case studies
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3510 , http://hdl.handle.net/10962/d1007631
- Description: New media technology continues to provide journalists with sophisticated tools that are changing news processing and gathering. Economics journalists in particular have grasped the possibilities offered by new media technologies. Thus, this paper offers a theoretical and practical look at how new media technologies have impacted the production and processing of economics news in South Africa, with a particular focus on Fin24.com which is South Africa's biggest online economics news publication. Using qualitative research methods and the case-study approach, this thesis documents the impact of new media technologies on the production of economics news. It draws on Witschge and Nygren's (2009) framework which describes how new media technologies change the nature in which news is produced and processed. New media technologies in this study will refer to the Internet, particularly search engines like Google, social networking sites such as Twitter and Facebook, Blogs as well as mobile telephony. Economics journalism will here refer to all coverage of economics and business-related news. This is because the case study (Fin24.com) covers both business and economics journalism by strict definition. Findings reveal that these new media technologies have not only changed economics newsgathering and processing but also journalistic routines. The findings generally show that new media technologies make it easier for economics journalists to produce the news quickly and efficiently. Indeed, the most distinguishing characteristic of new media is its overall speed, which is both challenging and attractive. The findings also reveal that new media technologies within a newsroom can be problematic in a number of ways, mainly raising issues of accuracy and credibility thus challenging the profession of economics journalism more than ever.
- Full Text:
- Date Issued: 2010
The isolation of muscle activity and ground reaction force patterns associated with postural control in four load manipulation tasks
- Authors: Pettengell, Clare Louise
- Date: 2010
- Subjects: Physical fitness , Exercise , Materials handling , Manual work , Lifting and carrying
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5125 , http://hdl.handle.net/10962/d1005203 , Physical fitness , Exercise , Materials handling , Manual work , Lifting and carrying
- Description: Although much effort has been placed into the reduction of risks associated with manual materials handling, risk of musculoskeletal disorder development remains high. This may be due to the additional muscle activity necessary for the maintenance of postural equilibrium during work tasks. This research proposes that postural control and subsequent additional muscle activity is influenced by the magnitude of the external load and the degree of body movement. The objective of this research was to identify whether performing tasks with increased external load and with a greater degree of trunk motion places additional strain on the musculoskeletal system in excess of that imposed by task demands. Twenty-four male and twenty-four female subjects performed four load manipulation tasks under three loading conditions (0.8kg, 1.6kg, and 4kg). Each task comprised of a static and dynamic condition. For the static condition, subjects maintained a stipulated posture for ten seconds. The dynamic condition required subjects to move and replace a box once every three seconds, such that a complete lift and lower cycle was performed in six seconds. Throughout task completion, muscle activity of six pairs of trunk muscles were analysed using surface electromyography. This was accompanied by data regarding ground reaction forces obtained through the use of a force platform. After the completion of each condition subjects were required to identify and rate body discomfort. Differential analysis was used to isolate the muscle activity and ground reaction forces attributed to increased external load and increased trunk movement. It was found that the heaviest loading conditions (4kg) resulted in significantly greater (p<0.05) muscle activation in the majority of muscles during all tasks investigated. The trend of muscle activity attributed to load was similar in all significantly altered muscles and activation was greatest in the heaviest loading condition. A degree of movement efficiency occurred in some muscles when manipulating loads of 0.8kg and 1.6kg. At greater loads, this did not occur suggesting that heavier loading conditions result in additional strain on the body in excess of that imposed by task demands. In manipulated data, trend of vertical ground reaction forces increased with increased load in all tasks. Sagittal movement of the centre of pressure attributed to load was significantly affected in manipulated data in the second movement phase of the “hip shoulder” task and the second movement phase of the “hip twist” task. The “hip reach” task was most affected by increased load magnitude as muscle activity attributed to load was significantly different (p<0.05) under increased loading conditions in both movement phases in all muscles. Further, a significant interactional effect (p<0.05) between condition and data point was found in all muscles with the exception of the right and left lumbar erector spinae during the second movement phase of the “hip reach” task. Muscle activity associated with increased trunk motion resulted in additional strain on the trunk muscles in the “hip shoulder” and “hip reach” tasks as muscle activity associated with the static component of each of the above tasks was greater than that of the dynamic tasks. Trend of ground reaction forces attributed to increased trunk motion generally increased under increased loading conditions. Additionally, a significant interactional effect (p<0.05) between load and muscle activity pattern was found in all muscles during all tasks, with the exception of the right rectus abdominis in the first movement phase of the “hip shoulder’ task, the left rectus abdominis in the second movement phase of the “hip knee” task and the right latissimus dorsi during the first movement phase of the “hip twist” task. This was accompanied by a significant interactional effect (p<0.05) between load and sagittal centre of pressure movement attributed to load, in both movement phases of all tasks investigated. From this research it can be proposed that guidelines may underestimate risk and subsequently under predict the strain in tasks performed with greater external loads as well as tasks which require a greater degree of trunk motion. Therefore, this study illustrates the importance of the consideration of the muscle activity necessary to maintain postural equilibrium in overall load analyses.
- Full Text:
- Date Issued: 2010
- Authors: Pettengell, Clare Louise
- Date: 2010
- Subjects: Physical fitness , Exercise , Materials handling , Manual work , Lifting and carrying
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5125 , http://hdl.handle.net/10962/d1005203 , Physical fitness , Exercise , Materials handling , Manual work , Lifting and carrying
- Description: Although much effort has been placed into the reduction of risks associated with manual materials handling, risk of musculoskeletal disorder development remains high. This may be due to the additional muscle activity necessary for the maintenance of postural equilibrium during work tasks. This research proposes that postural control and subsequent additional muscle activity is influenced by the magnitude of the external load and the degree of body movement. The objective of this research was to identify whether performing tasks with increased external load and with a greater degree of trunk motion places additional strain on the musculoskeletal system in excess of that imposed by task demands. Twenty-four male and twenty-four female subjects performed four load manipulation tasks under three loading conditions (0.8kg, 1.6kg, and 4kg). Each task comprised of a static and dynamic condition. For the static condition, subjects maintained a stipulated posture for ten seconds. The dynamic condition required subjects to move and replace a box once every three seconds, such that a complete lift and lower cycle was performed in six seconds. Throughout task completion, muscle activity of six pairs of trunk muscles were analysed using surface electromyography. This was accompanied by data regarding ground reaction forces obtained through the use of a force platform. After the completion of each condition subjects were required to identify and rate body discomfort. Differential analysis was used to isolate the muscle activity and ground reaction forces attributed to increased external load and increased trunk movement. It was found that the heaviest loading conditions (4kg) resulted in significantly greater (p<0.05) muscle activation in the majority of muscles during all tasks investigated. The trend of muscle activity attributed to load was similar in all significantly altered muscles and activation was greatest in the heaviest loading condition. A degree of movement efficiency occurred in some muscles when manipulating loads of 0.8kg and 1.6kg. At greater loads, this did not occur suggesting that heavier loading conditions result in additional strain on the body in excess of that imposed by task demands. In manipulated data, trend of vertical ground reaction forces increased with increased load in all tasks. Sagittal movement of the centre of pressure attributed to load was significantly affected in manipulated data in the second movement phase of the “hip shoulder” task and the second movement phase of the “hip twist” task. The “hip reach” task was most affected by increased load magnitude as muscle activity attributed to load was significantly different (p<0.05) under increased loading conditions in both movement phases in all muscles. Further, a significant interactional effect (p<0.05) between condition and data point was found in all muscles with the exception of the right and left lumbar erector spinae during the second movement phase of the “hip reach” task. Muscle activity associated with increased trunk motion resulted in additional strain on the trunk muscles in the “hip shoulder” and “hip reach” tasks as muscle activity associated with the static component of each of the above tasks was greater than that of the dynamic tasks. Trend of ground reaction forces attributed to increased trunk motion generally increased under increased loading conditions. Additionally, a significant interactional effect (p<0.05) between load and muscle activity pattern was found in all muscles during all tasks, with the exception of the right rectus abdominis in the first movement phase of the “hip shoulder’ task, the left rectus abdominis in the second movement phase of the “hip knee” task and the right latissimus dorsi during the first movement phase of the “hip twist” task. This was accompanied by a significant interactional effect (p<0.05) between load and sagittal centre of pressure movement attributed to load, in both movement phases of all tasks investigated. From this research it can be proposed that guidelines may underestimate risk and subsequently under predict the strain in tasks performed with greater external loads as well as tasks which require a greater degree of trunk motion. Therefore, this study illustrates the importance of the consideration of the muscle activity necessary to maintain postural equilibrium in overall load analyses.
- Full Text:
- Date Issued: 2010
The depiction of female characters by male writers in selected isiXhosa drama works
- Authors: Peter, Zola Welcome
- Date: 2010
- Subjects: Xhosa drama -- 20th century -- History and criticism , Women in literature , Feminism and literature , Xhosa drama -- Male authors , Gender identity in literature
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8446 , http://hdl.handle.net/10948/1482 , Xhosa drama -- 20th century -- History and criticism , Women in literature , Feminism and literature , Xhosa drama -- Male authors , Gender identity in literature
- Description: This research expresses female character portrayal in various drama works written by males. Chapter one is a general introduction that gives the key to this study, the motivation that leads to the selection of this topic; a literary review on the portrayal of female characters in literary works written by males; the scope of study, the basic composition of the ensuing chapters and the definitions of terms that are of paramount importance for this research. Various literary theories are used in Chapter two for the analysis of the research texts. These literary theories include womanism, gender and feminism which expose the social effects caused by the negative perception of females in social life and the negative portrayal of female characters in male dramatic writings. Other literary theories include onomastics as a literary theory, which exposes the relationship between the name giver of a person and the power the name gives to its bearer, as well as psychoanalysis as a theory which proved to be unavoidable, since this study analyses the personal behaviour of the individual characters within their literary environment. Chapter three depicts the general victimization of female characters in male drama works and exposes the various effects of the attitudes of male writers towards female characters in terms of gender role. Chapter four shows a general stereotypical portrayal of female characters in male written drama texts. This chapter shows the impact of stereotyping on female characters from drama works that puts them in a vulnerable position, showing that it is risky to become a victim of ill-treatment in their communities and the literary world. Chapter five deals with the psychological literary review of female characters, showing them as being suicidal and murderers who easily take their own lives and those of other people. Chapter six is a general conclusion of the works which includes observer remarks from other literary researchers of the literature.
- Full Text:
- Date Issued: 2010
- Authors: Peter, Zola Welcome
- Date: 2010
- Subjects: Xhosa drama -- 20th century -- History and criticism , Women in literature , Feminism and literature , Xhosa drama -- Male authors , Gender identity in literature
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8446 , http://hdl.handle.net/10948/1482 , Xhosa drama -- 20th century -- History and criticism , Women in literature , Feminism and literature , Xhosa drama -- Male authors , Gender identity in literature
- Description: This research expresses female character portrayal in various drama works written by males. Chapter one is a general introduction that gives the key to this study, the motivation that leads to the selection of this topic; a literary review on the portrayal of female characters in literary works written by males; the scope of study, the basic composition of the ensuing chapters and the definitions of terms that are of paramount importance for this research. Various literary theories are used in Chapter two for the analysis of the research texts. These literary theories include womanism, gender and feminism which expose the social effects caused by the negative perception of females in social life and the negative portrayal of female characters in male dramatic writings. Other literary theories include onomastics as a literary theory, which exposes the relationship between the name giver of a person and the power the name gives to its bearer, as well as psychoanalysis as a theory which proved to be unavoidable, since this study analyses the personal behaviour of the individual characters within their literary environment. Chapter three depicts the general victimization of female characters in male drama works and exposes the various effects of the attitudes of male writers towards female characters in terms of gender role. Chapter four shows a general stereotypical portrayal of female characters in male written drama texts. This chapter shows the impact of stereotyping on female characters from drama works that puts them in a vulnerable position, showing that it is risky to become a victim of ill-treatment in their communities and the literary world. Chapter five deals with the psychological literary review of female characters, showing them as being suicidal and murderers who easily take their own lives and those of other people. Chapter six is a general conclusion of the works which includes observer remarks from other literary researchers of the literature.
- Full Text:
- Date Issued: 2010
Validating the use of Hippobromus pauciflorus (L.f) Radlk for the treatment of eye infections in the Eastern Cape South Africa
- Authors: Pendota, Srinivasa Chary
- Date: 2010
- Subjects: Medicinal plants -- South Africa -- Eastern Cape , Herbs -- Therapeutic use , Eye -- Infections -- South Africa -- Eastern Cape , Sapindaceae
- Language: English
- Type: Thesis , Doctoral , PhD (Botany)
- Identifier: vital:11303 , http://hdl.handle.net/10353/d1001052 , Medicinal plants -- South Africa -- Eastern Cape , Herbs -- Therapeutic use , Eye -- Infections -- South Africa -- Eastern Cape , Sapindaceae
- Description: An ethnobotanical survey of plants used for the treatment of eye infections was carried out in the Eastern Cape Province of South Africa. The study revealed that 12 plant species are commonly used with Hippobromus pauciflorus (L.f) Radlk being the most frequent. The crude extracts of the leaves, stem bark and roots of the plant were investigated for antimicrobial activity against 10 bacterial and four fungal strains. The methanol extracts of the plant parts were the most active and showed appreciable activity against Gram-positive and Gram-negative bacteria. The methanol extracts of the leaves and stem bark inhibited the growth of fungi with activities ranging from 78.70 percent to 100 percent on Aspergillus niger and Penicillium notatum. The acetone extracts of the leaves and stem bark were active against A. niger (51.76 percent) and P. notatum (77.22 percent). The aqueous extract of Hippobromus pauciflorus leaves at 50, 100 and 200 mg/kg body weight doses were evaluated for anti-inflammatory, analgesic and antipyretic activities in male Wistar rats. Anti-inflammatory activity was studied by using carrageenan-and histamine induced oedema right hind paw volume while the analgesic effect was evaluated using formalin-induced pain and tail flick nociception response. The brewer’s yeast-induced pyrexia model was used for the antipyretic investigation. The extract at all the doses used significantly inhibited both the carrageenan- and histamine-induced inflammation in a manner that was not dose dependent. The extract reduced the formalin-induced pain licking as well as prolonged the reaction time in the tail flick-induced pain. The effects of the aqueous extract of the plant leaves at 50, 100 and 200 mg/kg body weight doses were investigated for 14 days on some biochemical parameters of male Wistar rats. The extract at all the doses tested did not significantly alter the levels of white blood cells, red blood cells, mean corpuscular volume, platelets, neutrophils, monocytes, lymphocytes and large unstained cells. While the levels of haemoglobin, packed cell volume and basophils increased at specific doses, those of mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration and eosinophils decreased. In vitro antiviral activities of the plant against herpes simplex virus type 1(HSV-1) and coxsakie virus B6 were investigated. Cytotoxicity was evaluated by MTT assay in Vero cells. At concentrations ranging from 165-270/μg/ml there was significant antiviral activity against HSV-1, but toxicity was also noted. There was no antiviral activity against coxsakie virus B6. Bioactivity-guided fractionation of the leaves of H. pauciflorus yielded three known compounds. From the ethyl acetate fraction, two compounds were isolated (epicatechin and -sitosterol ) and from the n- hexane fractions, one compound (lupeol) was isolated. They were isolated and identified using various techniques. The antimicrobial, anti-inflammatory, analgesic and anti-pyretic activity of these compounds have been reported in literature. The structure and distribution of foliar appendages on the leaves of H. pauciflorus were examined by scanning electron microscope. The leaves have long unicellular nonglandular trichomes which were distributed over the mid rib and densely populated at the edges of the adaxial and abaxial surfaces. In general, the experiments and tests conducted in this study appear to have justified the use of Hippobromus pauciflorus for the treatment of eye infections and make a substantial contribution to the knowledge base of the use of herbal medicine for the treatment of the eye infections.
- Full Text:
- Date Issued: 2010
- Authors: Pendota, Srinivasa Chary
- Date: 2010
- Subjects: Medicinal plants -- South Africa -- Eastern Cape , Herbs -- Therapeutic use , Eye -- Infections -- South Africa -- Eastern Cape , Sapindaceae
- Language: English
- Type: Thesis , Doctoral , PhD (Botany)
- Identifier: vital:11303 , http://hdl.handle.net/10353/d1001052 , Medicinal plants -- South Africa -- Eastern Cape , Herbs -- Therapeutic use , Eye -- Infections -- South Africa -- Eastern Cape , Sapindaceae
- Description: An ethnobotanical survey of plants used for the treatment of eye infections was carried out in the Eastern Cape Province of South Africa. The study revealed that 12 plant species are commonly used with Hippobromus pauciflorus (L.f) Radlk being the most frequent. The crude extracts of the leaves, stem bark and roots of the plant were investigated for antimicrobial activity against 10 bacterial and four fungal strains. The methanol extracts of the plant parts were the most active and showed appreciable activity against Gram-positive and Gram-negative bacteria. The methanol extracts of the leaves and stem bark inhibited the growth of fungi with activities ranging from 78.70 percent to 100 percent on Aspergillus niger and Penicillium notatum. The acetone extracts of the leaves and stem bark were active against A. niger (51.76 percent) and P. notatum (77.22 percent). The aqueous extract of Hippobromus pauciflorus leaves at 50, 100 and 200 mg/kg body weight doses were evaluated for anti-inflammatory, analgesic and antipyretic activities in male Wistar rats. Anti-inflammatory activity was studied by using carrageenan-and histamine induced oedema right hind paw volume while the analgesic effect was evaluated using formalin-induced pain and tail flick nociception response. The brewer’s yeast-induced pyrexia model was used for the antipyretic investigation. The extract at all the doses used significantly inhibited both the carrageenan- and histamine-induced inflammation in a manner that was not dose dependent. The extract reduced the formalin-induced pain licking as well as prolonged the reaction time in the tail flick-induced pain. The effects of the aqueous extract of the plant leaves at 50, 100 and 200 mg/kg body weight doses were investigated for 14 days on some biochemical parameters of male Wistar rats. The extract at all the doses tested did not significantly alter the levels of white blood cells, red blood cells, mean corpuscular volume, platelets, neutrophils, monocytes, lymphocytes and large unstained cells. While the levels of haemoglobin, packed cell volume and basophils increased at specific doses, those of mean corpuscular haemoglobin, mean corpuscular haemoglobin concentration and eosinophils decreased. In vitro antiviral activities of the plant against herpes simplex virus type 1(HSV-1) and coxsakie virus B6 were investigated. Cytotoxicity was evaluated by MTT assay in Vero cells. At concentrations ranging from 165-270/μg/ml there was significant antiviral activity against HSV-1, but toxicity was also noted. There was no antiviral activity against coxsakie virus B6. Bioactivity-guided fractionation of the leaves of H. pauciflorus yielded three known compounds. From the ethyl acetate fraction, two compounds were isolated (epicatechin and -sitosterol ) and from the n- hexane fractions, one compound (lupeol) was isolated. They were isolated and identified using various techniques. The antimicrobial, anti-inflammatory, analgesic and anti-pyretic activity of these compounds have been reported in literature. The structure and distribution of foliar appendages on the leaves of H. pauciflorus were examined by scanning electron microscope. The leaves have long unicellular nonglandular trichomes which were distributed over the mid rib and densely populated at the edges of the adaxial and abaxial surfaces. In general, the experiments and tests conducted in this study appear to have justified the use of Hippobromus pauciflorus for the treatment of eye infections and make a substantial contribution to the knowledge base of the use of herbal medicine for the treatment of the eye infections.
- Full Text:
- Date Issued: 2010