Using assessment strategically to gestate a student thesis
- Authors: Grant, Carolyn
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/281164 , vital:55698 , xlink:href="https://hdl.handle.net/10520/EJC153523"
- Description: In the context of higher education in South Africa and drawing on the author's experience as a lecturer in two higher education institutions (HEIs), this article presents her attempts to bring together - and into balance - teaching, supervision and research in an endeavour to offer a transformative learning experience for her post graduate students. It does this by foregrounding student assessment in the Master of Education (MEd) degree in the field of Educational Leadership and Management (ELM) where the development of a half thesis, underpinned by research, stands as the evidence of success. The author suggests that the MEd (ELM) degree be conceptualised differently in order that the half thesis be permitted to gestate over a two-year period. Within this conceptualisation, she argues that inspired teaching and meaningful research is best attained through a community of learning approach which seeks to foreground participatory learning, the advancement of scholarly discourse and the development of student agency. Through the use of a case study, the author provides evidence to suggest that a range of authentic assessment strategies which are purposeful and in alignment with the teaching strategies, the content and the intended outcomes of the qualification being taught are essential. She further argues that well-crafted, formative, recursive and sustainable feedback is an essential part of the gestation process.
- Full Text:
- Date Issued: 2013
- Authors: Grant, Carolyn
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/281164 , vital:55698 , xlink:href="https://hdl.handle.net/10520/EJC153523"
- Description: In the context of higher education in South Africa and drawing on the author's experience as a lecturer in two higher education institutions (HEIs), this article presents her attempts to bring together - and into balance - teaching, supervision and research in an endeavour to offer a transformative learning experience for her post graduate students. It does this by foregrounding student assessment in the Master of Education (MEd) degree in the field of Educational Leadership and Management (ELM) where the development of a half thesis, underpinned by research, stands as the evidence of success. The author suggests that the MEd (ELM) degree be conceptualised differently in order that the half thesis be permitted to gestate over a two-year period. Within this conceptualisation, she argues that inspired teaching and meaningful research is best attained through a community of learning approach which seeks to foreground participatory learning, the advancement of scholarly discourse and the development of student agency. Through the use of a case study, the author provides evidence to suggest that a range of authentic assessment strategies which are purposeful and in alignment with the teaching strategies, the content and the intended outcomes of the qualification being taught are essential. She further argues that well-crafted, formative, recursive and sustainable feedback is an essential part of the gestation process.
- Full Text:
- Date Issued: 2013
Weevil borne microbes contribute as much to the reduction of photosynthesis in water hyacinth as does herbivory
- Venter, Nic, Hill, Martin P, Hutchinson, Sarah-Leigh, Ripley, Bradford S
- Authors: Venter, Nic , Hill, Martin P , Hutchinson, Sarah-Leigh , Ripley, Bradford S
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/423573 , vital:72073 , xlink:href="https://doi.org/10.1016/j.biocontrol.2012.10.011"
- Description: Arthropods released for weed biocontrol can have effects other than simply removing biomass and frequently decrease photosynthetic rate more than can be attributed to the mere loss of photosynthetic surface area. Some of this effect may result because biological control agents facilitate the transfer and ingress of deleterious microbes into plant tissues on which they feed. We evaluated this facilitation effect using water hyacinth (Eichhornia crassipes) and a weevil (Neochetina eichhorniae) and compared the reductions in photosynthetic rates between leaves subject to herbivory by adult weevils sterilized with 3.5% chlorine bleach, to those that were unsterilized. The results showed that weevils carried both fungi and bacteria, transferred these to leaves on which they fed, and that microbes and biomass removal contributed almost equally to the 37% decrease in photosynthetic productivity. Hence, maximising the effectiveness of using arthropods that damage leaf surfaces for biocontrol requires the presence of microorganisms that are deleterious to plants.
- Full Text:
- Date Issued: 2013
- Authors: Venter, Nic , Hill, Martin P , Hutchinson, Sarah-Leigh , Ripley, Bradford S
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/423573 , vital:72073 , xlink:href="https://doi.org/10.1016/j.biocontrol.2012.10.011"
- Description: Arthropods released for weed biocontrol can have effects other than simply removing biomass and frequently decrease photosynthetic rate more than can be attributed to the mere loss of photosynthetic surface area. Some of this effect may result because biological control agents facilitate the transfer and ingress of deleterious microbes into plant tissues on which they feed. We evaluated this facilitation effect using water hyacinth (Eichhornia crassipes) and a weevil (Neochetina eichhorniae) and compared the reductions in photosynthetic rates between leaves subject to herbivory by adult weevils sterilized with 3.5% chlorine bleach, to those that were unsterilized. The results showed that weevils carried both fungi and bacteria, transferred these to leaves on which they fed, and that microbes and biomass removal contributed almost equally to the 37% decrease in photosynthetic productivity. Hence, maximising the effectiveness of using arthropods that damage leaf surfaces for biocontrol requires the presence of microorganisms that are deleterious to plants.
- Full Text:
- Date Issued: 2013
X-ray photoelectron spectroscopy analysis of the effect of alkyl-and arylthio substituents on manganese phthalocyanines for self-assembled monolayer formation on gold
- Coates, Megan, Nyokong, Tebello
- Authors: Coates, Megan , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/190490 , vital:44999 , xlink:href="https://doi.org/10.1016/j.elecom.2013.03.019"
- Description: Self-assembled monolayers of an octa-substituted alkylthio and arylthio manganese phthalocyanines were formed on gold. X-ray photoelectron spectroscopy was used to analyse both of the phthalocyanine layers on gold. Approximately 60% of the sulphur groups in the aryl substituted-SAM surface were bound to gold through the cleavage of the C S bond, as opposed to only 37% for the alkyl substituted-SAM.
- Full Text:
- Date Issued: 2013
- Authors: Coates, Megan , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/190490 , vital:44999 , xlink:href="https://doi.org/10.1016/j.elecom.2013.03.019"
- Description: Self-assembled monolayers of an octa-substituted alkylthio and arylthio manganese phthalocyanines were formed on gold. X-ray photoelectron spectroscopy was used to analyse both of the phthalocyanine layers on gold. Approximately 60% of the sulphur groups in the aryl substituted-SAM surface were bound to gold through the cleavage of the C S bond, as opposed to only 37% for the alkyl substituted-SAM.
- Full Text:
- Date Issued: 2013
Zinc (II) 2, 9, 16, 23-tetrakis [4-(N-methylpyridyloxy)]-phthalocyanine anchored on an electrospun polysulfone polymer fiber: Application for photosensitized conversion of methyl orange
- Zugle, Ruphino, Nyokong, Tebello
- Authors: Zugle, Ruphino , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/232741 , vital:50020 , xlink:href="https://doi.org/10.1016/j.molcata.2012.10.001"
- Description: In this work, a comparative study of photodegradation of methyl orange, an azo dye, in homogeneous aqueous solution of a quarternized cationic zinc phthalocyanine and a heterogeneous catalytic system based on the same phthalocyanine anchored on polysulfone polymer fiber is presented. In both cases, conversion involved the azo bond of the dye with no detectable opening up of the aromatic benzene rings. The reaction kinetics in both cases were consistent with first order with the conversion occurring in the homogeneous system being faster than when the functionalized polymer fiber was used. The reaction products consisted of a coupling product as well as a series of oligopolymeric products.
- Full Text:
- Date Issued: 2013
- Authors: Zugle, Ruphino , Nyokong, Tebello
- Date: 2013
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/232741 , vital:50020 , xlink:href="https://doi.org/10.1016/j.molcata.2012.10.001"
- Description: In this work, a comparative study of photodegradation of methyl orange, an azo dye, in homogeneous aqueous solution of a quarternized cationic zinc phthalocyanine and a heterogeneous catalytic system based on the same phthalocyanine anchored on polysulfone polymer fiber is presented. In both cases, conversion involved the azo bond of the dye with no detectable opening up of the aromatic benzene rings. The reaction kinetics in both cases were consistent with first order with the conversion occurring in the homogeneous system being faster than when the functionalized polymer fiber was used. The reaction products consisted of a coupling product as well as a series of oligopolymeric products.
- Full Text:
- Date Issued: 2013
A Feminist Analysis of Lyman Frank Baum’s The Wonderful Wizard of Oz, Lucy Maud Montgomery’s Anne of Green Gables and Frances Hodgson Burnett’s The Secret Garden
- Authors: Becker, Bonnie
- Date: 2013-01
- Subjects: Fiction , Children , Orphans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23214 , vital:55905
- Description: The primary aim of this project is to provide a close contextual and textual analysis of the selected children’s classics: The Wonderful Wizard of Oz, Anne of Green Gables and The Secret Garden using the feminist literary theory. From this perspective I have shown how the selected works of Lyman Frank Baum, Lucy Maud Montgomery and Frances Hodgson Burnett’s writing have contributed to women’s stereotypical roles within society and perpetuated their subjugated position. I have also conducted an examination of the extent to which the female protagonists attempt to emancipate themselves from gender oppression. A comparative study of the selected children’s texts has not yet been conducted and therefore this project serves as a significant contribution to this field of study. An exploration of the historical background of the authors and children’s literature is conducted to provide an overview into the inner workings of the writers’ lives and the historical significance of children’s literature as a genre. The theoretical framework of feminist literary theory is used in the analysis of the selected texts. The connection between feminist literary theory and children’s literature is highlighted and provides further understanding of the purpose of this study. The history of feminism as both a movement and a contemporary literary criticism is explored. Simone de Beauvoir’s The Second Sex is used when analysing the texts’ characters and how they are based on society’s stereotypical gender roles. Luce Irigaray’s Speculum of the Other Woman and This Sex Which is Not One is examined to aid in an exploration of psychological female oppression through feminine and masculine discourse evident in the creation of the novels’ female and male characters. Hélène Cixous’ “The Laugh of the Medusa” and The Newly Born Woman is interrogated according to the stereotypical ideology surrounding the terms masculinity and femininity and how these terms are interpreted in the selected works. Judith Butler’s Gender Trouble and Undoing Gender are additionally explored to assist in the understanding of the concept of gender performativity and through the lens of Butler’s interpolation of gender the move towards the emancipation of women is seen in the selected children’s texts. The close textual feminist analysis focuses on the female protagonists: Dorothy, Anne and Mary as well as the secondary female characters: the wicked witches, Aunt Em, the Queen of the Field-Mice, the princess made from china, Glinda’s female soldiers from The Wonderful Wizard of Oz; Marilla Cuthbert, Rachel Lynde and Diana Barry from Anne of Green Gables and Martha, Mrs Sowerby and Mrs Craven from The Secret Garden. The portrayal of the secondary male characters are additionally explored according to feminist literary theory: The Scarecrow, the Tin Woodman, the Lion and the wizard Oz from The Wonderful Wizard of Oz; Matthew Cuthbert and Gilbert Blythe from Anne of the Green Gables’ and Mr Craven, Colin Craven and Dickon Sowerby from The Secret Garden. The comparison of these children’s classics by Baum, Montgomery and Burnett provides insight into the selected works of all three writers, through the lens offered by feminist literary theory. Through the interrogation of these representative female protagonists found in early children’s literature, an understanding of not only the subordination of women, as evident in literature during this era, is illustrated but also the comprehension that women’s liberation was foreshadowed in these early children’s novels. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Becker, Bonnie
- Date: 2013-01
- Subjects: Fiction , Children , Orphans
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23214 , vital:55905
- Description: The primary aim of this project is to provide a close contextual and textual analysis of the selected children’s classics: The Wonderful Wizard of Oz, Anne of Green Gables and The Secret Garden using the feminist literary theory. From this perspective I have shown how the selected works of Lyman Frank Baum, Lucy Maud Montgomery and Frances Hodgson Burnett’s writing have contributed to women’s stereotypical roles within society and perpetuated their subjugated position. I have also conducted an examination of the extent to which the female protagonists attempt to emancipate themselves from gender oppression. A comparative study of the selected children’s texts has not yet been conducted and therefore this project serves as a significant contribution to this field of study. An exploration of the historical background of the authors and children’s literature is conducted to provide an overview into the inner workings of the writers’ lives and the historical significance of children’s literature as a genre. The theoretical framework of feminist literary theory is used in the analysis of the selected texts. The connection between feminist literary theory and children’s literature is highlighted and provides further understanding of the purpose of this study. The history of feminism as both a movement and a contemporary literary criticism is explored. Simone de Beauvoir’s The Second Sex is used when analysing the texts’ characters and how they are based on society’s stereotypical gender roles. Luce Irigaray’s Speculum of the Other Woman and This Sex Which is Not One is examined to aid in an exploration of psychological female oppression through feminine and masculine discourse evident in the creation of the novels’ female and male characters. Hélène Cixous’ “The Laugh of the Medusa” and The Newly Born Woman is interrogated according to the stereotypical ideology surrounding the terms masculinity and femininity and how these terms are interpreted in the selected works. Judith Butler’s Gender Trouble and Undoing Gender are additionally explored to assist in the understanding of the concept of gender performativity and through the lens of Butler’s interpolation of gender the move towards the emancipation of women is seen in the selected children’s texts. The close textual feminist analysis focuses on the female protagonists: Dorothy, Anne and Mary as well as the secondary female characters: the wicked witches, Aunt Em, the Queen of the Field-Mice, the princess made from china, Glinda’s female soldiers from The Wonderful Wizard of Oz; Marilla Cuthbert, Rachel Lynde and Diana Barry from Anne of Green Gables and Martha, Mrs Sowerby and Mrs Craven from The Secret Garden. The portrayal of the secondary male characters are additionally explored according to feminist literary theory: The Scarecrow, the Tin Woodman, the Lion and the wizard Oz from The Wonderful Wizard of Oz; Matthew Cuthbert and Gilbert Blythe from Anne of the Green Gables’ and Mr Craven, Colin Craven and Dickon Sowerby from The Secret Garden. The comparison of these children’s classics by Baum, Montgomery and Burnett provides insight into the selected works of all three writers, through the lens offered by feminist literary theory. Through the interrogation of these representative female protagonists found in early children’s literature, an understanding of not only the subordination of women, as evident in literature during this era, is illustrated but also the comprehension that women’s liberation was foreshadowed in these early children’s novels. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
Children’s Grants and Social Security Communities in the Eastern Cape : The Case of Nqabarha Administrative Area
- Authors: Mwangolela, Tafadzwa Fungay
- Date: 2013-01
- Subjects: Children -- Services for -- South Africa -- Eastern Cape , Grants in aid , Social Security -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23159 , vital:55664
- Description: This study examines the impact of children’s grants on household access to food, education and health care. In the face of increased poverty and socio-economic inequalities, social grants are a critical poverty alleviation intervention implemented by the government of South Africa. The children’s grants are offered as part of the social security system which is provided for in the Republic of South Africa Constitution of 1996 and the Social Assistance Act of 2004. The basic needs conceptual framework is the lens informing the focus of the study. Among other major findings, the study reveals that (a) childrens grants play a critical role in improvement of access to food, health care and education, (b) childrens grants are used as collateral, to access short term loans, and (c) social networks and home gardens play a significant role in aiding children’s grants to ensure household access to food, education and health care. , Thesis (MA) -- Faculty Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Mwangolela, Tafadzwa Fungay
- Date: 2013-01
- Subjects: Children -- Services for -- South Africa -- Eastern Cape , Grants in aid , Social Security -- South Africa -- Eastern Cape
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23159 , vital:55664
- Description: This study examines the impact of children’s grants on household access to food, education and health care. In the face of increased poverty and socio-economic inequalities, social grants are a critical poverty alleviation intervention implemented by the government of South Africa. The children’s grants are offered as part of the social security system which is provided for in the Republic of South Africa Constitution of 1996 and the Social Assistance Act of 2004. The basic needs conceptual framework is the lens informing the focus of the study. Among other major findings, the study reveals that (a) childrens grants play a critical role in improvement of access to food, health care and education, (b) childrens grants are used as collateral, to access short term loans, and (c) social networks and home gardens play a significant role in aiding children’s grants to ensure household access to food, education and health care. , Thesis (MA) -- Faculty Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
Group 12 metal chalcogenides as single source molecular precursors for the preparation of metal sulfide nanoparticles
- Osuntokun, Jejenija https://orcid.org/0000-0003-0886-2732
- Authors: Osuntokun, Jejenija https://orcid.org/0000-0003-0886-2732
- Date: 2013-01
- Subjects: Ligands , Chalcogenides , Chemistry, Inorganic
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27428 , vital:67295
- Description: Twelve Zn(II), Cd(II) and Hg(II) complexes of mixed ligands: alkyl thiourea, 1-ethoxylcarbonyl-1-cyanoethylene-2,2-dithiolate and tetramethylthiuram disulfide were synthesized by the reaction between the ligands and the respective metal salts. The compounds were characterized by elemental analysis, infrared (IR), 1H- and 13C-NMR spectroscopy. Four coordinate geometries were proposed for the compounds based on elemental and spectroscopic analyses. The metal complexes were at best sparingly soluble in polar coordinating solvents such as DMSO and DMF and insoluble in most organic solvents. This makes it practically impossible to grow single crystals suitable for X-ray crystallographic analysis and also resulted in extremely poor 13C-NMR spectra for some of the complexes. Thermogravimetric analysis on some of the complexes showed that they decomposed to their respective metal sulfides and thus suitable as single molecular precursors for the preparation of metal sulfide nanoparticles. Nine of the complexes with good yield were thermolysed and used as single source precursors to synthesized hexadexylamine capped metal sulfide nanoparticles. The optical and structural properties of the nanoparticles were studied using UV-Visible, photoluminescence (PL), scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD) and energy dispersive spectroscopy (EDX). The absorption and emission spectra of the nanoparticles show quantum confinement. The SEM showed the morphology of the particles as nearly spherical, the EDX spectra revealed peaks corresponding to respective metal and sulfur with traces of contaminants being phosphorus from tri-n-octylphosphine (TOP). , Thesis (MSc) -- Faculty of Science and Agriculture, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Osuntokun, Jejenija https://orcid.org/0000-0003-0886-2732
- Date: 2013-01
- Subjects: Ligands , Chalcogenides , Chemistry, Inorganic
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27428 , vital:67295
- Description: Twelve Zn(II), Cd(II) and Hg(II) complexes of mixed ligands: alkyl thiourea, 1-ethoxylcarbonyl-1-cyanoethylene-2,2-dithiolate and tetramethylthiuram disulfide were synthesized by the reaction between the ligands and the respective metal salts. The compounds were characterized by elemental analysis, infrared (IR), 1H- and 13C-NMR spectroscopy. Four coordinate geometries were proposed for the compounds based on elemental and spectroscopic analyses. The metal complexes were at best sparingly soluble in polar coordinating solvents such as DMSO and DMF and insoluble in most organic solvents. This makes it practically impossible to grow single crystals suitable for X-ray crystallographic analysis and also resulted in extremely poor 13C-NMR spectra for some of the complexes. Thermogravimetric analysis on some of the complexes showed that they decomposed to their respective metal sulfides and thus suitable as single molecular precursors for the preparation of metal sulfide nanoparticles. Nine of the complexes with good yield were thermolysed and used as single source precursors to synthesized hexadexylamine capped metal sulfide nanoparticles. The optical and structural properties of the nanoparticles were studied using UV-Visible, photoluminescence (PL), scanning electron microscopy (SEM), transmission electron microscopy (TEM), powder X-ray diffraction (XRD) and energy dispersive spectroscopy (EDX). The absorption and emission spectra of the nanoparticles show quantum confinement. The SEM showed the morphology of the particles as nearly spherical, the EDX spectra revealed peaks corresponding to respective metal and sulfur with traces of contaminants being phosphorus from tri-n-octylphosphine (TOP). , Thesis (MSc) -- Faculty of Science and Agriculture, 2013
- Full Text:
- Date Issued: 2013-01
Leaners' perceptions of factors contributing to poor academic performance in rural high schools of the Fort Beaufort Education District
- Authors: Tom, Lusu Lennox
- Date: 2013-01
- Subjects: Education, Higher , School management and organization , Teacher effectiveness
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10353/25272 , vital:64137
- Description: This research investigates learners’ perceptions of factors which they believe contribute to their poor academic performance in high schools. The study focuses on four schools in Fort Beaufort district of the Eastern Cape. Twenty-four learners (6 from each school) participated in this study. Using a theoretical framework drawn from Bandura (1977) the study explored the views of learners in both under and high performing schools. One main research question was posed, answered and discussed for the purpose of the study. Data was collected through individual interviews, focus group discussions and document analyses. The findings of the study revealed a number of factors contributing to poor academic performance. These were learner factors, teacher factors, home factors and teaching resources. Regarding learner factors, the study revealed that while learners were committed and motivated to do their work in order to avoid low income jobs, this did not always happen as they found themselves getting distracted during class time and this affected their performance. The study revealed that some of the teachers lacked commitment, and were very unprofessional and incompetent. This, according to the learners, contributed to poor learner performance in the various subjects. Home factors also played a role in learner performance. The study revealed that home factors were seen to be enabling when parents were supportive and helpful to their children. At the same time, home factors tended to impede learning when learners were given household chores to do and this impinged on their study time. Some parents were also illiterate and as a result were not able to help their children with homework or supervise them while they were busy with their homework. The lack of teaching and learning resources such as textbooks, computers and laboratories as well as overcrowded classrooms also contributed to poor learner performance. This study makes the following recommendations: Teachers should be closely monitored by principals to ensure that they come to class regularly and are punctual so that learners do not lose time necessary to cover the content on their syllabus. Teachers should plan and prepare for lessons thoroughly. Lessons must cover a wide range of activities during their teaching to actively engage learners and prepare them adequately for their assessment tasks, including examinations. Teachers should be work-shopped regularly in order to capacitate them on the latest trends and pedagogies in education as well as rejuvenate their professionalism. It is important that teachers be active researchers in class in order to appraise themselves their learners’ needs and how they can, from the learners’ point of view, improve service delivery. From time to time teachers should work closely with parents to develop strategies they can jointly use to monitor and support children’s learning effectively. , Thesis (MEd) -- Faculty of Education, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Tom, Lusu Lennox
- Date: 2013-01
- Subjects: Education, Higher , School management and organization , Teacher effectiveness
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10353/25272 , vital:64137
- Description: This research investigates learners’ perceptions of factors which they believe contribute to their poor academic performance in high schools. The study focuses on four schools in Fort Beaufort district of the Eastern Cape. Twenty-four learners (6 from each school) participated in this study. Using a theoretical framework drawn from Bandura (1977) the study explored the views of learners in both under and high performing schools. One main research question was posed, answered and discussed for the purpose of the study. Data was collected through individual interviews, focus group discussions and document analyses. The findings of the study revealed a number of factors contributing to poor academic performance. These were learner factors, teacher factors, home factors and teaching resources. Regarding learner factors, the study revealed that while learners were committed and motivated to do their work in order to avoid low income jobs, this did not always happen as they found themselves getting distracted during class time and this affected their performance. The study revealed that some of the teachers lacked commitment, and were very unprofessional and incompetent. This, according to the learners, contributed to poor learner performance in the various subjects. Home factors also played a role in learner performance. The study revealed that home factors were seen to be enabling when parents were supportive and helpful to their children. At the same time, home factors tended to impede learning when learners were given household chores to do and this impinged on their study time. Some parents were also illiterate and as a result were not able to help their children with homework or supervise them while they were busy with their homework. The lack of teaching and learning resources such as textbooks, computers and laboratories as well as overcrowded classrooms also contributed to poor learner performance. This study makes the following recommendations: Teachers should be closely monitored by principals to ensure that they come to class regularly and are punctual so that learners do not lose time necessary to cover the content on their syllabus. Teachers should plan and prepare for lessons thoroughly. Lessons must cover a wide range of activities during their teaching to actively engage learners and prepare them adequately for their assessment tasks, including examinations. Teachers should be work-shopped regularly in order to capacitate them on the latest trends and pedagogies in education as well as rejuvenate their professionalism. It is important that teachers be active researchers in class in order to appraise themselves their learners’ needs and how they can, from the learners’ point of view, improve service delivery. From time to time teachers should work closely with parents to develop strategies they can jointly use to monitor and support children’s learning effectively. , Thesis (MEd) -- Faculty of Education, 2013
- Full Text:
- Date Issued: 2013-01
Perspectives of communities on use of alcohol among children in rural areas
- Authors: Noganta, Nandi
- Date: 2013-01
- Subjects: Children -- Alcohol use , Youth -- Alcohol use -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25382 , vital:64234
- Description: Globalisation raises hopes that communities will become self reliant through development success and thus become an integrated whole (Offiong 2001). But the creation of global village leads to fragmentation of communities, a loss of norms and local values. This study focuses on communities of the Eastern Cape Province, exploring the nature of and extent to which children use alcohol as a consequence of cultural rituals. The researcher aims to develop a culturally sensitive psycho-social approach to address alcohol use among children. The purpose of the research was to investigate the extent to which certain cultural practices contribute towards alcohol use among children in the rural areas of the Eastern Cape Province. Thus exploring the nature and extent to which children use alcohol as a consequence of cultural rituals and to explore whether families and communities are aware of the impact of alcohol use by children in the community. The research was qualitative in nature and through semi-structured interview schedules the researcher was able to gain insight in the area of substance use amongst children in the rural areas of the Eastern Cape Province. Community members, learners from schools, educators and probation officers formed part of the research sample. The research findings suggest that community members are aware that the traditional rituals that are carried out in the rural areas have been contributing to the issue of children using alcohol. However, the community members feel challenged as they become conflicted by their traditional rituals and this impacts upon children using alcohol. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Noganta, Nandi
- Date: 2013-01
- Subjects: Children -- Alcohol use , Youth -- Alcohol use -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/25382 , vital:64234
- Description: Globalisation raises hopes that communities will become self reliant through development success and thus become an integrated whole (Offiong 2001). But the creation of global village leads to fragmentation of communities, a loss of norms and local values. This study focuses on communities of the Eastern Cape Province, exploring the nature of and extent to which children use alcohol as a consequence of cultural rituals. The researcher aims to develop a culturally sensitive psycho-social approach to address alcohol use among children. The purpose of the research was to investigate the extent to which certain cultural practices contribute towards alcohol use among children in the rural areas of the Eastern Cape Province. Thus exploring the nature and extent to which children use alcohol as a consequence of cultural rituals and to explore whether families and communities are aware of the impact of alcohol use by children in the community. The research was qualitative in nature and through semi-structured interview schedules the researcher was able to gain insight in the area of substance use amongst children in the rural areas of the Eastern Cape Province. Community members, learners from schools, educators and probation officers formed part of the research sample. The research findings suggest that community members are aware that the traditional rituals that are carried out in the rural areas have been contributing to the issue of children using alcohol. However, the community members feel challenged as they become conflicted by their traditional rituals and this impacts upon children using alcohol. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
Perspectives of communities on use of alcohol among children in rural areas
- Noganta, Nandi https://orcid.org/0000-0002-7115-3261
- Authors: Noganta, Nandi https://orcid.org/0000-0002-7115-3261
- Date: 2013-01
- Subjects: Alcohol use , Substance abuse , Children
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23192 , vital:55893
- Description: Globalisation raises hopes that communities will become self reliant through development success and thus become an integrated whole (Offiong 2001). But the creation of global village leads to fragmentation of communities, a loss of norms and local values. This study focuses on communities of the Eastern Cape Province, exploring the nature of and extent to which children use alcohol as a consequence of cultural rituals. The researcher aims to develop a culturally sensitive psycho-social approach to address alcohol use among children. The purpose of the research was to investigate the extent to which certain cultural practices contribute towards alcohol use among children in the rural areas of the Eastern Cape Province. Thus exploring the nature and extent to which children use alcohol as a consequence of cultural rituals and to explore whether families and communities are aware of the impact of alcohol use by children in the community. The research was qualitative in nature and through semi-structured interview schedules the researcher was able to gain insight in the area of substance use amongst children in the rural areas of the Eastern Cape Province. Community members, learners from schools, educators and probation officers formed part of the research sample. The research findings suggest that community members are aware that the traditional rituals that are carried out in the rural areas have been contributing to the issue of children using alcohol. However, the community members feel challenged as they become conflicted by their traditional rituals and this impacts upon children using alcohol. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Noganta, Nandi https://orcid.org/0000-0002-7115-3261
- Date: 2013-01
- Subjects: Alcohol use , Substance abuse , Children
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23192 , vital:55893
- Description: Globalisation raises hopes that communities will become self reliant through development success and thus become an integrated whole (Offiong 2001). But the creation of global village leads to fragmentation of communities, a loss of norms and local values. This study focuses on communities of the Eastern Cape Province, exploring the nature of and extent to which children use alcohol as a consequence of cultural rituals. The researcher aims to develop a culturally sensitive psycho-social approach to address alcohol use among children. The purpose of the research was to investigate the extent to which certain cultural practices contribute towards alcohol use among children in the rural areas of the Eastern Cape Province. Thus exploring the nature and extent to which children use alcohol as a consequence of cultural rituals and to explore whether families and communities are aware of the impact of alcohol use by children in the community. The research was qualitative in nature and through semi-structured interview schedules the researcher was able to gain insight in the area of substance use amongst children in the rural areas of the Eastern Cape Province. Community members, learners from schools, educators and probation officers formed part of the research sample. The research findings suggest that community members are aware that the traditional rituals that are carried out in the rural areas have been contributing to the issue of children using alcohol. However, the community members feel challenged as they become conflicted by their traditional rituals and this impacts upon children using alcohol. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
Pregnant teenagers' readiness for motherhood: a quantitative investigation in Nkonkobe Municipality, Eastern Cape
- Authors: Pitso, Tsolo Joseph
- Date: 2013-01
- Subjects: Teenage mothers -- South Africa , Teenage pregnancy -- South Africa , Motherhood -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27440 , vital:67298
- Description: The issue of teenage motherhood has been a concern, globally, continentally and locally. The quantitative study assessed whether the pregnant teenagers were ready for motherhood. This report analysed the current positions of women whose first child was to be born when they were teenagers in the rural Eastern Cape setting. The structured questionnaires were given to 106 pregnant teenagers who visited the War Memorial clinic for pregnancy check-up and convenient sampling was used to select these respondents. The items of the questionnaire were divided into the following sub-topics: prenatal and postnatal challenges and roles and responsibilities of motherhood. The study found that most of the pregnant teenagers were aware of the prenatal and postnatal challenges but they were not ready to perform the roles and responsibilities associated with motherhood. The analysis of data was divided in terms of descriptive and inferential statistics. The binary regression model was used to assess the factors affecting the pregnant teenagers’ readiness for motherhood. The finding of this study indicated that most (about 79%) of the pregnant teenagers were not aware of the roles and responsibilities of motherhood In addition to being not ready to face the psycho-social challenges of motherhood. Hence they indicated low level of readiness to motherhood. The psycho-social theory of Erikson posited that children who had strong and intact psycho-social relationships with the caregivers might have a high possibility of acquiring their identity during adolescent stage and this will help them to interact both effectively and efficiently with their peers and the society at large. While those do had negative psycho-social development have a high chance of facing identity crisis/confusion. As a result, they might lead them to being victims of psycho-social interaction such as early pregnancy. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Pitso, Tsolo Joseph
- Date: 2013-01
- Subjects: Teenage mothers -- South Africa , Teenage pregnancy -- South Africa , Motherhood -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/27440 , vital:67298
- Description: The issue of teenage motherhood has been a concern, globally, continentally and locally. The quantitative study assessed whether the pregnant teenagers were ready for motherhood. This report analysed the current positions of women whose first child was to be born when they were teenagers in the rural Eastern Cape setting. The structured questionnaires were given to 106 pregnant teenagers who visited the War Memorial clinic for pregnancy check-up and convenient sampling was used to select these respondents. The items of the questionnaire were divided into the following sub-topics: prenatal and postnatal challenges and roles and responsibilities of motherhood. The study found that most of the pregnant teenagers were aware of the prenatal and postnatal challenges but they were not ready to perform the roles and responsibilities associated with motherhood. The analysis of data was divided in terms of descriptive and inferential statistics. The binary regression model was used to assess the factors affecting the pregnant teenagers’ readiness for motherhood. The finding of this study indicated that most (about 79%) of the pregnant teenagers were not aware of the roles and responsibilities of motherhood In addition to being not ready to face the psycho-social challenges of motherhood. Hence they indicated low level of readiness to motherhood. The psycho-social theory of Erikson posited that children who had strong and intact psycho-social relationships with the caregivers might have a high possibility of acquiring their identity during adolescent stage and this will help them to interact both effectively and efficiently with their peers and the society at large. While those do had negative psycho-social development have a high chance of facing identity crisis/confusion. As a result, they might lead them to being victims of psycho-social interaction such as early pregnancy. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
Pregnant teenagers’ readiness for motherhood:A quantitative investigation in Nkonkobe Municipality, Eastern Cape
- Authors: Pitso, Tsolo Joseph
- Date: 2013-01
- Subjects: Teenage Mothers , Teenage Pregnancy
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23142 , vital:55652
- Description: The issue of teenage motherhood has been a concern, globally, continentally and locally. The quantitative study assessed whether the pregnant teenagers were ready for motherhood. This report analysed the current positions of women whose first child was to be born when they were teenagers in the rural Eastern Cape setting. The structured questionnaires were given to 106 pregnant teenagers who visited the War Memorial clinic for pregnancy check-up and convenient sampling was used to select these respondents. The items of the questionnaire were divided into the following sub-topics: prenatal and postnatal challenges and roles and responsibilities of motherhood. The study found that most of the pregnant teenagers were aware of the prenatal and postnatal challenges but they were not ready to perform the roles and responsibilities associated with motherhood. The analysis of data was divided in terms of descriptive and inferential statistics. The binary regression model was used to assess the factors affecting the pregnant teenagers’ readiness for motherhood. The finding of this study indicated that most (about 79 percent) of the pregnant teenagers were not aware of the roles and responsibilities of motherhood In addition to being not ready to face the psycho-social challenges of motherhood. Hence they indicated low level of readiness to motherhood. The psycho-social theory of Erikson posited that children who had strong and intact psycho-social relationships with the caregivers might have a high possibility of acquiring their identity during adolescent stage and this will help them to interact both effectively and efficiently with their peers and the society at large. While those do had negative psycho-social development have a high chance of facing identity crisis/confusion. As a result, they might lead them to being victims of psycho-social interaction such as early pregnancy. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2021
- Full Text:
- Date Issued: 2013-01
- Authors: Pitso, Tsolo Joseph
- Date: 2013-01
- Subjects: Teenage Mothers , Teenage Pregnancy
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23142 , vital:55652
- Description: The issue of teenage motherhood has been a concern, globally, continentally and locally. The quantitative study assessed whether the pregnant teenagers were ready for motherhood. This report analysed the current positions of women whose first child was to be born when they were teenagers in the rural Eastern Cape setting. The structured questionnaires were given to 106 pregnant teenagers who visited the War Memorial clinic for pregnancy check-up and convenient sampling was used to select these respondents. The items of the questionnaire were divided into the following sub-topics: prenatal and postnatal challenges and roles and responsibilities of motherhood. The study found that most of the pregnant teenagers were aware of the prenatal and postnatal challenges but they were not ready to perform the roles and responsibilities associated with motherhood. The analysis of data was divided in terms of descriptive and inferential statistics. The binary regression model was used to assess the factors affecting the pregnant teenagers’ readiness for motherhood. The finding of this study indicated that most (about 79 percent) of the pregnant teenagers were not aware of the roles and responsibilities of motherhood In addition to being not ready to face the psycho-social challenges of motherhood. Hence they indicated low level of readiness to motherhood. The psycho-social theory of Erikson posited that children who had strong and intact psycho-social relationships with the caregivers might have a high possibility of acquiring their identity during adolescent stage and this will help them to interact both effectively and efficiently with their peers and the society at large. While those do had negative psycho-social development have a high chance of facing identity crisis/confusion. As a result, they might lead them to being victims of psycho-social interaction such as early pregnancy. , Thesis (MA) -- Faculty of Social Sciences and Humanities, 2021
- Full Text:
- Date Issued: 2013-01
Production and biochemical characterization of new bioflocculants from bacteria isolated from freshwater and marine environments of the Eastern Cape in South Africa
- Mabinya, Leonard Vuyani https://orcid.org/0000-0002-0682-7282
- Authors: Mabinya, Leonard Vuyani https://orcid.org/0000-0002-0682-7282
- Date: 2013-01
- Subjects: Flocculation , Bacteria
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24228 , vital:62445
- Description: The production and characterization of bioflocculants produced by three bacteria belonging to Arthrobacter, Halomonas and Micrococcus genera and isolated from freshwater and marine environments were evaluated both as axenic cultures and as consortia. The influences of cultutre conditions such as carbon, nitrogen and metal ions sources, as well as initial pH on bioflocculant production by individual isolates were investigated. Both Arthrobacter sp. Raats and Halomonas sp. Okoh utilized urea as a nitrogen source of choice for optimal production of the bioflocculants with Micrococcus sp. Leo having a preference for peptone. All three strains differed in as far as the carbon source of choice was concerned with lactose, glucose and sucrose the preferred carbon sources respectively. Also, all three bacterial strains produced an extracellular bioflocculant aerobically but an intial pH 7.0 of the culture media was suitable for both Arthrobacter sp. Raats and Halomonas sp. Okoh with a slightly alkaline pH of 9.0 preferred by Micrococcus sp. Leo. The presence of Mg2+ cations stimulated bioflocculant production by both Arthrobacter sp. Raats and Micrococcus sp. Leo while Ca2+ resulted in more efficient bioflocculant production by Halomonas sp. Okoh. Chemical analyses revealed the bioflocculants produced by both Halomonas sp. Okoh and Micrococcus sp. Leo to be predominantly polysaccharides whereas Arthrobacter sp. Raats produced principally a glycoprotein composed of about 56percent protein and 25percent total carbohydrate. Response surface methodology (RSM) was used to optimize production medium for bioflocculant production by a consortium of Halomonas sp. Okoh and Micrococcus sp. Leo. Plackett-Burman experimental design showed that fructose, ammonium sulphate and MgCl2 were significant in the high yield of the bioflocculant. Furthermore, central composite design showed that optimal concentration of these critical nutritional sources were 16.14 g/L, 1.55 g/L and 1.88 g/L for fructose, ammonium sulphate and MgCl2 respectively. Quantification of the bioflocculant showed a yield of 6.43 g/L which was in close accord with the predicted value of 6.51 g/L. FTIR spectrometry of the bioflocculant indicated the presence of carboxyl, hydroxyl and amino groups, typical for heteropolysaccharide, while SEM imaging revealed a lattice-like structure. The efficiency of the nutrient optimization suggests suitability for industrial applicability. , Thesis (PhD) -- Faculty of Science and Agriculture, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Mabinya, Leonard Vuyani https://orcid.org/0000-0002-0682-7282
- Date: 2013-01
- Subjects: Flocculation , Bacteria
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24228 , vital:62445
- Description: The production and characterization of bioflocculants produced by three bacteria belonging to Arthrobacter, Halomonas and Micrococcus genera and isolated from freshwater and marine environments were evaluated both as axenic cultures and as consortia. The influences of cultutre conditions such as carbon, nitrogen and metal ions sources, as well as initial pH on bioflocculant production by individual isolates were investigated. Both Arthrobacter sp. Raats and Halomonas sp. Okoh utilized urea as a nitrogen source of choice for optimal production of the bioflocculants with Micrococcus sp. Leo having a preference for peptone. All three strains differed in as far as the carbon source of choice was concerned with lactose, glucose and sucrose the preferred carbon sources respectively. Also, all three bacterial strains produced an extracellular bioflocculant aerobically but an intial pH 7.0 of the culture media was suitable for both Arthrobacter sp. Raats and Halomonas sp. Okoh with a slightly alkaline pH of 9.0 preferred by Micrococcus sp. Leo. The presence of Mg2+ cations stimulated bioflocculant production by both Arthrobacter sp. Raats and Micrococcus sp. Leo while Ca2+ resulted in more efficient bioflocculant production by Halomonas sp. Okoh. Chemical analyses revealed the bioflocculants produced by both Halomonas sp. Okoh and Micrococcus sp. Leo to be predominantly polysaccharides whereas Arthrobacter sp. Raats produced principally a glycoprotein composed of about 56percent protein and 25percent total carbohydrate. Response surface methodology (RSM) was used to optimize production medium for bioflocculant production by a consortium of Halomonas sp. Okoh and Micrococcus sp. Leo. Plackett-Burman experimental design showed that fructose, ammonium sulphate and MgCl2 were significant in the high yield of the bioflocculant. Furthermore, central composite design showed that optimal concentration of these critical nutritional sources were 16.14 g/L, 1.55 g/L and 1.88 g/L for fructose, ammonium sulphate and MgCl2 respectively. Quantification of the bioflocculant showed a yield of 6.43 g/L which was in close accord with the predicted value of 6.51 g/L. FTIR spectrometry of the bioflocculant indicated the presence of carboxyl, hydroxyl and amino groups, typical for heteropolysaccharide, while SEM imaging revealed a lattice-like structure. The efficiency of the nutrient optimization suggests suitability for industrial applicability. , Thesis (PhD) -- Faculty of Science and Agriculture, 2013
- Full Text:
- Date Issued: 2013-01
Significance of accuracy in the orthographical development of isiXhosa in a post-democratic South Africa
- Authors: Saul, Zandisile W.
- Date: 2013-01
- Subjects: Xhosa language , Xhosa language -- Orthography and spelling , Xhosa language -- Grammar
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/23056 , vital:55325
- Description: IsiXhosa language is one of the first languages in sub-Saharan Africa to be reduced into writing. The first written texts in isiXhosa were produced by British missionaries in the Tyhume river valley as early as 1824. In spite of these early developments, there still remain today many inconsistencies and anomalies with regard to the standardization of isiXhosa orthography that require attention. This research focuses on the status quo of the current orthography of isiXhosa which is used in the writing of the selected texts which were published from 2000 to date. The research study investigates how these texts are written, that is, whether they are written according to the principles of the writing of this language as developed by the respective language boards or not. The reason for doing this is that this language has become one of the official languages of the Republic of South Africa. Therefore, in order for it to be read and written without any difficulty by anyone, as it is expected to be used as a medium of instruction even at tertiary level in the future, it should be written accurately and consistently. The study analyses a number of isiXhosa written texts including the following: (1) Selected literary texts which were published from 2000 to date. (2) Selected publications by government departments. (3) Selected translated texts. (4) Some of the newspapers and magazines which are currently in circulation in this language. (5) Some dictionaries of isiXhosa. (6) The updated isiXhosa Orthography as compiled by the PanSALB (2008). The aims of the study are outlined in Chapter 1. This chapter also provides the theoretical framework within which the research is located. Chapter 2 is about the theoretical perspectives on the development of the art of writing and orthography. The historical background, that is, the development of the art of writing and the general as well as the specific requirements of a good orthography are discussed. Chapters 3, 4 and 5 observe and analyse the orthographical features of some written documents of isiXhosa such as writing of capital letters, word division, usage of concords, etc. These three chapters also observe and analyse the various anomalies and inconsistencies in the spelling of isiXhosa words that were identified in the consulted texts. Chapter 6 is devoted to the conclusion and the recommendations. , Thesis (PhD) -- Faculty of Social Science and Humanities,2013
- Full Text:
- Date Issued: 2013-01
- Authors: Saul, Zandisile W.
- Date: 2013-01
- Subjects: Xhosa language , Xhosa language -- Orthography and spelling , Xhosa language -- Grammar
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/23056 , vital:55325
- Description: IsiXhosa language is one of the first languages in sub-Saharan Africa to be reduced into writing. The first written texts in isiXhosa were produced by British missionaries in the Tyhume river valley as early as 1824. In spite of these early developments, there still remain today many inconsistencies and anomalies with regard to the standardization of isiXhosa orthography that require attention. This research focuses on the status quo of the current orthography of isiXhosa which is used in the writing of the selected texts which were published from 2000 to date. The research study investigates how these texts are written, that is, whether they are written according to the principles of the writing of this language as developed by the respective language boards or not. The reason for doing this is that this language has become one of the official languages of the Republic of South Africa. Therefore, in order for it to be read and written without any difficulty by anyone, as it is expected to be used as a medium of instruction even at tertiary level in the future, it should be written accurately and consistently. The study analyses a number of isiXhosa written texts including the following: (1) Selected literary texts which were published from 2000 to date. (2) Selected publications by government departments. (3) Selected translated texts. (4) Some of the newspapers and magazines which are currently in circulation in this language. (5) Some dictionaries of isiXhosa. (6) The updated isiXhosa Orthography as compiled by the PanSALB (2008). The aims of the study are outlined in Chapter 1. This chapter also provides the theoretical framework within which the research is located. Chapter 2 is about the theoretical perspectives on the development of the art of writing and orthography. The historical background, that is, the development of the art of writing and the general as well as the specific requirements of a good orthography are discussed. Chapters 3, 4 and 5 observe and analyse the orthographical features of some written documents of isiXhosa such as writing of capital letters, word division, usage of concords, etc. These three chapters also observe and analyse the various anomalies and inconsistencies in the spelling of isiXhosa words that were identified in the consulted texts. Chapter 6 is devoted to the conclusion and the recommendations. , Thesis (PhD) -- Faculty of Social Science and Humanities,2013
- Full Text:
- Date Issued: 2013-01
The impact of beliefs and values on agricultural change: a case of Murombedzi Irrigation Scheme, Zimbabwe
- Authors: Nyika, Emery
- Date: 2013-01
- Subjects: Agriculture -- Environmental aspects , Farms, Small , Agricultural productivity
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10353/25698 , vital:64469
- Description: Since the mid 1970s there has been an increasing effort to raise the level of adoption of agricultural innovations in small-scale farming for improved production. NGOs and governments have engaged in a participatory approach not only to empower local people, but also to give them an opportunity to learn, access, and utilize innovations that have been introduced in the agriculture sector. However due to several factors small-scale farmers in Zimbabwe have failed to fully adopt these changes that would enhance their farming activities. Most of these farmers have rather preferred maintaining and practising their preliterate farming methods. Like most irrigation schemes Murombedzi Irrigation Scheme is self funded due to the fact that the government has failed to fund most of such projects. This has subsequently left projects such as the Murombedzi Irrigation Scheme to provide for their own agricultural needs. NGOs have in the past provided assistance to these small-scale farmers but mostly in cases of drought. This study is an assessment of the impact of beliefs and values on the adoption of agricultural change in Murombedzi Irrigation Scheme. The study investigates the extent to which beliefs and values have an effect on small-scale farmer’s access and utilization to adopting innovations. Research findings reveal that farming production in Murombedzi is low and the local farmers have been passive participants in gaining training and education that can assist them in gaining knowledge on the effectiveness of implementing innovations. However; the farmers prefer to maintain their traditional methods that have been effectively used by their fore fathers. It is a common belief among the informants that their ancestors are to be kept pleased at all times and this means practicing traditional farming which, for them, has proved to be effective in the past. As a result, this calls for an empirical research to be carried out at the grass roots level to explore the dynamics that influence the status quo on the ground. This study was conducted to help agricultural change to be implemented in small-scale farming for the benefit of agricultural production. The focus was on a local irrigation scheme that is self funded. Data was gathered using an ethnographic research design. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
- Authors: Nyika, Emery
- Date: 2013-01
- Subjects: Agriculture -- Environmental aspects , Farms, Small , Agricultural productivity
- Language: English
- Type: text
- Identifier: http://hdl.handle.net/10353/25698 , vital:64469
- Description: Since the mid 1970s there has been an increasing effort to raise the level of adoption of agricultural innovations in small-scale farming for improved production. NGOs and governments have engaged in a participatory approach not only to empower local people, but also to give them an opportunity to learn, access, and utilize innovations that have been introduced in the agriculture sector. However due to several factors small-scale farmers in Zimbabwe have failed to fully adopt these changes that would enhance their farming activities. Most of these farmers have rather preferred maintaining and practising their preliterate farming methods. Like most irrigation schemes Murombedzi Irrigation Scheme is self funded due to the fact that the government has failed to fund most of such projects. This has subsequently left projects such as the Murombedzi Irrigation Scheme to provide for their own agricultural needs. NGOs have in the past provided assistance to these small-scale farmers but mostly in cases of drought. This study is an assessment of the impact of beliefs and values on the adoption of agricultural change in Murombedzi Irrigation Scheme. The study investigates the extent to which beliefs and values have an effect on small-scale farmer’s access and utilization to adopting innovations. Research findings reveal that farming production in Murombedzi is low and the local farmers have been passive participants in gaining training and education that can assist them in gaining knowledge on the effectiveness of implementing innovations. However; the farmers prefer to maintain their traditional methods that have been effectively used by their fore fathers. It is a common belief among the informants that their ancestors are to be kept pleased at all times and this means practicing traditional farming which, for them, has proved to be effective in the past. As a result, this calls for an empirical research to be carried out at the grass roots level to explore the dynamics that influence the status quo on the ground. This study was conducted to help agricultural change to be implemented in small-scale farming for the benefit of agricultural production. The focus was on a local irrigation scheme that is self funded. Data was gathered using an ethnographic research design. , Thesis (MSoc) -- Faculty of Social Sciences and Humanities, 2013
- Full Text:
- Date Issued: 2013-01
A critical analysis of the screen adaptation of Saule's Unyana womntu
- Authors: Mbatsha,Thembisa
- Date: 2012-12
- Subjects: Motion picture authorship , Literature -- Adaptations
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23078 , vital:55400
- Description: This research will concentrate on various aspects of the screen adaptation of “Unyana womntu” (Saule, 1989). This study comprises of six chapters. In Chapter 1 of this study, the research aims and objectives are formulated. The research methods that are to be followed will involve a thorough reading of the written text, as well as a comprehensive repetitive viewing of all the episodes of the screen version. In the final part of Chapter 1, background information is provided on the personal life of the author as well as on his contributions to the African literary tradition. Background information on the production of the screen version is also provided. In the Chapter 2, the theoretical aspects of the phenomenon of literary adaptation are discussed. This discussion provides a framework for the analysis of the adaptation of “Unyana womntu” (Saule, 1989) in the remaining chapters of this study. The aim of this chapter is to identify and discuss the most important principles which come into play when the written text is adapted into a screen production. Since the screen production belongs to the genre of the performing arts, this chapter is introduced with a discussion on the performing arts and on the drama, in particular. The section will be concluded with a discussion on the different sub-types of the drama which can be found, including the screen production. The main emphasis is on an analysis of the basic features and principles of the drama in screen format. Since the screen play Unyana Womntu (1998) is based upon a novel by the same title, the literary features of the novel are to be discussed here as well. The specific features of the Xhosa novel will also receive attention. In Chapter 3, the adaptation of the background of the novel “Unyana womntu” (Saule, 1989) into the screen production is critically evaluated. Aspects such as the adaptation of the macro-features as well as the micro-features of the background are identified and critically analysed Chapter 4 deals with the adaptation of the character element. This discussion takes place within a particular theoretical framework which defines the essential elements of characterization within the novel and within the drama respectively. It also deals with the manner in which each of these elements is subjected to the process of adaptation. The aim of Chapter 5 is to analyse the adaptation of the plot of “Unyana womntu” (Saule, 1989) from a written text into a screen production. This analysis is based upon a well-constructed theoretical framework that addresses the various aspects of the plot, as found within narrative texts. Chapter 6 contains a general conclusion which will finally present the observations and findings drawn from the entire study , Thesis (MA) -- Faculty of Social Science and Humanities, 2012
- Full Text:
- Date Issued: 2012-12
- Authors: Mbatsha,Thembisa
- Date: 2012-12
- Subjects: Motion picture authorship , Literature -- Adaptations
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/23078 , vital:55400
- Description: This research will concentrate on various aspects of the screen adaptation of “Unyana womntu” (Saule, 1989). This study comprises of six chapters. In Chapter 1 of this study, the research aims and objectives are formulated. The research methods that are to be followed will involve a thorough reading of the written text, as well as a comprehensive repetitive viewing of all the episodes of the screen version. In the final part of Chapter 1, background information is provided on the personal life of the author as well as on his contributions to the African literary tradition. Background information on the production of the screen version is also provided. In the Chapter 2, the theoretical aspects of the phenomenon of literary adaptation are discussed. This discussion provides a framework for the analysis of the adaptation of “Unyana womntu” (Saule, 1989) in the remaining chapters of this study. The aim of this chapter is to identify and discuss the most important principles which come into play when the written text is adapted into a screen production. Since the screen production belongs to the genre of the performing arts, this chapter is introduced with a discussion on the performing arts and on the drama, in particular. The section will be concluded with a discussion on the different sub-types of the drama which can be found, including the screen production. The main emphasis is on an analysis of the basic features and principles of the drama in screen format. Since the screen play Unyana Womntu (1998) is based upon a novel by the same title, the literary features of the novel are to be discussed here as well. The specific features of the Xhosa novel will also receive attention. In Chapter 3, the adaptation of the background of the novel “Unyana womntu” (Saule, 1989) into the screen production is critically evaluated. Aspects such as the adaptation of the macro-features as well as the micro-features of the background are identified and critically analysed Chapter 4 deals with the adaptation of the character element. This discussion takes place within a particular theoretical framework which defines the essential elements of characterization within the novel and within the drama respectively. It also deals with the manner in which each of these elements is subjected to the process of adaptation. The aim of Chapter 5 is to analyse the adaptation of the plot of “Unyana womntu” (Saule, 1989) from a written text into a screen production. This analysis is based upon a well-constructed theoretical framework that addresses the various aspects of the plot, as found within narrative texts. Chapter 6 contains a general conclusion which will finally present the observations and findings drawn from the entire study , Thesis (MA) -- Faculty of Social Science and Humanities, 2012
- Full Text:
- Date Issued: 2012-12
Development & evaluation of modified lignocellulose-clinoptilolite composites for water treatment
- Authors: Vala, Mavula Kikwe Remy
- Date: 2012-12
- Subjects: Lignocellulose , Lignocellulose -- Biotechnology
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24521 , vital:63051
- Description: Municipalities, mining, textile and many other industries release wastewater into water bodies. Thus, the entire ecosystem (biota and abiota) including drinking water is affected by polluted effluents. The growing environmental concern over water pollution (due to inorganic and persistent organic compounds) attracts a significant amount of research in the removal of pollutants from water. In this study, lignocellulose and clinoptilolite were modified for the preparation of composites, with high adsorption properties, suitable for the removal of pollutants. Grass (Kikuyu grass) material was first treated with boiling water in order to remove soluble compounds and then with sulfuric acid in order to free functional groups within lignocellulose. The lignocellulose obtained was then chemically modified with three different siloxanes (3-aminopropyl-terminated poly (di)methylsiloxanes) of different molecular weights. For clinoptilolite, impurities were removed by reflux in hydrochloric acid before chemical modification with siloxanes. Grafting of siloxanes onto lignocellulose and clinoptilolite as well as the preparation of composites were successfully achieved by means of dibutyltin dilaurate (catalyst) after reflux under nitrogen. The modified materials were characterized by FT-IR, XRD, SEM and TGA and results confirmed successful modification of the materials. Solid state 29Si and 13C NMR were used to investigate the nature of the composite prepared with siloxane NH40D (CNH40D). The investigation revealed a possible bond between the modified lignocellulose and the modified clinoptilolite in the composite. The sorptive and/or ion exchange properties of the materials prepared for the removal of pollutants from water were then investigated. Phenol red, used motor (engine) oil and cyanide were used (with regard to textile, oil spill and gold mining effluents respectively) to simulate water pollution in the laboratory. It was found that adsorption properties of lignocellulose were significantly increased after sulfuric acid treatment, suggesting the availability of lignocellulose functional groups as adsorption sites. When further modified with siloxanes, lignocellulose showed less efficiency in adsorbing phenol red. The general mechanism of phenol red uptake onto lignocellulose and clinoptilolite modified with siloxane or composites was: rapid initial adsorption, slow uptake, small rate increase and then equilibrium. The mechanism of phenol red uptake could be well represented by the pseudo second-order kinetic model with equilibrium being reached after a period of time, ranging between 1-5 hours. The linear Langmuir model was the best model for describing adsorption of phenol red onto lignocellulose modified with siloxanes and composites while the Freundlich model appeared to be best for clinoptilolite modified with siloxanes. The general mechanism of used motor oil uptake onto lignocellulose and clinoptilolite modified with siloxane or composites was: rapid uptake, equilibrium and the process occurs over a short period (10 min). The pseudo second-order kinetic model appeared to be the best representation of this adsorption. The linear Langmuir isotherms are the best fitted model for used motor oil uptake onto the adsorbents prepared. Adsorption of cyanide occurred very quickly (10 to 30 min). For lignocellulose and clinoptilolite modified with siloxanes, desorption occurred soon after adsorption and thus no kinetic model nor isotherms of adsorption were deduced. However, adsorption of cyanide onto composites could be represented by the pseudo second-order kinetic model. Nanofibres were fabricated by electrospinning of the modified lignocellulose and composites by blending them with PAN in a solvent mixture of DMF-DMSO. Nanofiltration was achieved by packing the nanofibres prepared into a pipette and filtering polluted water. Nanofiltration was assessed by measurement of the turbidity of water which dropped from 63 NTU for polluted water to 3.06 NTU for filtered water. , Thesis (PhD) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-12
- Authors: Vala, Mavula Kikwe Remy
- Date: 2012-12
- Subjects: Lignocellulose , Lignocellulose -- Biotechnology
- Language: English
- Type: Doctoral theses , text
- Identifier: http://hdl.handle.net/10353/24521 , vital:63051
- Description: Municipalities, mining, textile and many other industries release wastewater into water bodies. Thus, the entire ecosystem (biota and abiota) including drinking water is affected by polluted effluents. The growing environmental concern over water pollution (due to inorganic and persistent organic compounds) attracts a significant amount of research in the removal of pollutants from water. In this study, lignocellulose and clinoptilolite were modified for the preparation of composites, with high adsorption properties, suitable for the removal of pollutants. Grass (Kikuyu grass) material was first treated with boiling water in order to remove soluble compounds and then with sulfuric acid in order to free functional groups within lignocellulose. The lignocellulose obtained was then chemically modified with three different siloxanes (3-aminopropyl-terminated poly (di)methylsiloxanes) of different molecular weights. For clinoptilolite, impurities were removed by reflux in hydrochloric acid before chemical modification with siloxanes. Grafting of siloxanes onto lignocellulose and clinoptilolite as well as the preparation of composites were successfully achieved by means of dibutyltin dilaurate (catalyst) after reflux under nitrogen. The modified materials were characterized by FT-IR, XRD, SEM and TGA and results confirmed successful modification of the materials. Solid state 29Si and 13C NMR were used to investigate the nature of the composite prepared with siloxane NH40D (CNH40D). The investigation revealed a possible bond between the modified lignocellulose and the modified clinoptilolite in the composite. The sorptive and/or ion exchange properties of the materials prepared for the removal of pollutants from water were then investigated. Phenol red, used motor (engine) oil and cyanide were used (with regard to textile, oil spill and gold mining effluents respectively) to simulate water pollution in the laboratory. It was found that adsorption properties of lignocellulose were significantly increased after sulfuric acid treatment, suggesting the availability of lignocellulose functional groups as adsorption sites. When further modified with siloxanes, lignocellulose showed less efficiency in adsorbing phenol red. The general mechanism of phenol red uptake onto lignocellulose and clinoptilolite modified with siloxane or composites was: rapid initial adsorption, slow uptake, small rate increase and then equilibrium. The mechanism of phenol red uptake could be well represented by the pseudo second-order kinetic model with equilibrium being reached after a period of time, ranging between 1-5 hours. The linear Langmuir model was the best model for describing adsorption of phenol red onto lignocellulose modified with siloxanes and composites while the Freundlich model appeared to be best for clinoptilolite modified with siloxanes. The general mechanism of used motor oil uptake onto lignocellulose and clinoptilolite modified with siloxane or composites was: rapid uptake, equilibrium and the process occurs over a short period (10 min). The pseudo second-order kinetic model appeared to be the best representation of this adsorption. The linear Langmuir isotherms are the best fitted model for used motor oil uptake onto the adsorbents prepared. Adsorption of cyanide occurred very quickly (10 to 30 min). For lignocellulose and clinoptilolite modified with siloxanes, desorption occurred soon after adsorption and thus no kinetic model nor isotherms of adsorption were deduced. However, adsorption of cyanide onto composites could be represented by the pseudo second-order kinetic model. Nanofibres were fabricated by electrospinning of the modified lignocellulose and composites by blending them with PAN in a solvent mixture of DMF-DMSO. Nanofiltration was achieved by packing the nanofibres prepared into a pipette and filtering polluted water. Nanofiltration was assessed by measurement of the turbidity of water which dropped from 63 NTU for polluted water to 3.06 NTU for filtered water. , Thesis (PhD) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-12
Examining learners' and teachers' perceptions of the relationship between school infrastructure and learners' performance in Fort Beaufort Education District, Eastern Cape Province, South Africa
- Ajibade, Benedicta Aremevbemi
- Authors: Ajibade, Benedicta Aremevbemi
- Date: 2012-12
- Subjects: School facilities , Education and state -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24695 , vital:63526
- Description: This study examined learners’ and teachers’ perceptions of the relationship between school infrastructure and learners’ performance in Fort Beaufort Education District, Eastern Cape. The study arose from a concern that, despite South African Government’s commitment to funding the renovation of some old and dilapidated school buildings and constructing new ones so that there would be an improvement in both teaching and learning in affected secondary schools. Regrettably, most school buildings remain in deplorable conditions. There has been poor learner performance at all levels of the secondary education system in some rural areas of the Eastern Cape Province. Learners’ performance in the Province’s high schools has been described as the worst in the country. From the literature, it appears that no thorough and conclusive studies looking into the issues relating to school buildings and learners’ performance as perceived by learners and teachers in South Africa have been conducted. Hence, the researcher was motivated to examine the relationship between school buildings and learners’ performance. The study was placed within the post-positivism paradigm and used a mixed method research design that incorporated concurrent procedures in the collection, analysis and interpretation of the data. Likert-scale questionnaires were used to collect quantitative data while qualitative data were collected through interviews and observations. A total of 240 learners completed the questionnaire. The researcher conducted 48 brief interviews (36 with teachers and 12 with school principals) from 12 selected secondary schools. Furthermore, the researcher made observations to assess the state of the buildings. At school level, the study revealed that most of the school buildings were in deplorable condition. The teaching and learning environment also compounded the problem of poor learners’ performance. Learners’ motivation/morale, health and safety were not guaranteed in most of the schools, and teachers’ expressed difficulty in performing their job effectively. Large classes, lack of teaching and learning resources, and limited infrastructure were some of the factors hindering teaching and learning at school level. Results obtained from the study showed that the principals and teachers perceived strong links between the condition of their school buildings and learners’ performance. About half of the learners perceived some link between the condition of their schools and their academic performance. The study observed that the majority of school buildings were old and in very bad conditions with few under renovation from the Correctional service department. The study also showed that most schools lack recreational facilities, do not have electricity, laboratories, library and water. Most of the educators are unhappy about their work environment and are not motivated. The study has put forth recommendations for educational planners and for policies regarding the funding norms. Furthermore, based on the findings of the study, there is need for collaborative effort among educational stakeholders to ensure adequate and appropriated delivery of school infrastructure specifically school building that will translate into improved teaching practice at school level and better learners’ performance. , Thesis (MEd) -- Faculty of Education, 2012
- Full Text:
- Date Issued: 2012-12
- Authors: Ajibade, Benedicta Aremevbemi
- Date: 2012-12
- Subjects: School facilities , Education and state -- South Africa
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24695 , vital:63526
- Description: This study examined learners’ and teachers’ perceptions of the relationship between school infrastructure and learners’ performance in Fort Beaufort Education District, Eastern Cape. The study arose from a concern that, despite South African Government’s commitment to funding the renovation of some old and dilapidated school buildings and constructing new ones so that there would be an improvement in both teaching and learning in affected secondary schools. Regrettably, most school buildings remain in deplorable conditions. There has been poor learner performance at all levels of the secondary education system in some rural areas of the Eastern Cape Province. Learners’ performance in the Province’s high schools has been described as the worst in the country. From the literature, it appears that no thorough and conclusive studies looking into the issues relating to school buildings and learners’ performance as perceived by learners and teachers in South Africa have been conducted. Hence, the researcher was motivated to examine the relationship between school buildings and learners’ performance. The study was placed within the post-positivism paradigm and used a mixed method research design that incorporated concurrent procedures in the collection, analysis and interpretation of the data. Likert-scale questionnaires were used to collect quantitative data while qualitative data were collected through interviews and observations. A total of 240 learners completed the questionnaire. The researcher conducted 48 brief interviews (36 with teachers and 12 with school principals) from 12 selected secondary schools. Furthermore, the researcher made observations to assess the state of the buildings. At school level, the study revealed that most of the school buildings were in deplorable condition. The teaching and learning environment also compounded the problem of poor learners’ performance. Learners’ motivation/morale, health and safety were not guaranteed in most of the schools, and teachers’ expressed difficulty in performing their job effectively. Large classes, lack of teaching and learning resources, and limited infrastructure were some of the factors hindering teaching and learning at school level. Results obtained from the study showed that the principals and teachers perceived strong links between the condition of their school buildings and learners’ performance. About half of the learners perceived some link between the condition of their schools and their academic performance. The study observed that the majority of school buildings were old and in very bad conditions with few under renovation from the Correctional service department. The study also showed that most schools lack recreational facilities, do not have electricity, laboratories, library and water. Most of the educators are unhappy about their work environment and are not motivated. The study has put forth recommendations for educational planners and for policies regarding the funding norms. Furthermore, based on the findings of the study, there is need for collaborative effort among educational stakeholders to ensure adequate and appropriated delivery of school infrastructure specifically school building that will translate into improved teaching practice at school level and better learners’ performance. , Thesis (MEd) -- Faculty of Education, 2012
- Full Text:
- Date Issued: 2012-12
Integrating legacy applications into service oriented architecture middleware
- Makamba, Makaziwe https://orcid.org/0000-0001-6998-4480
- Authors: Makamba, Makaziwe https://orcid.org/0000-0001-6998-4480
- Date: 2012-12
- Subjects: Service-oriented architecture (Computer science) , Computer architecture
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24294 , vital:62599
- Description: Information and Communication Technology (ICT) is a dynamic approach that is widely recognized as an innovative and powerful tool for socio-economic development, it is a key catalyst for the emergence of knowledge economy. ICT have been used to develop applications, promote transparency and efficiency in multiple services such e-Learning, e-Government, e-Health and e-Judiciary especially for Marginalized Rural Areas (MRAs). The ICT approach is designed to bridge the digital divide. This approach has been widely deployed in many programs and it has led to the development of a new field which is Information and Communication Technology for Development (ICT4D). Within the context of ICT4D there are arrays of e-services that have been deployed to improve the impoverished communities. Some of these applications have failed to bring the changes that were designed to bring in the community due to the use of old architectures. There is therefore a need to develop a system that will integrate legacy applications into contemporary architectures. To solve the problem of the legacy applications we have developed TeleWeaver Service Oriented Architecture (SOA) middleware into which we integrate an e-Commerce and e-Learning applications into SOA middleware. For this integration system there are specific technologies that were used to integrate legacy applications into SOA middleware: RESTful web services using the slim API, SOAP via Nu-SOAP technologies were used to integrate these legacy applications. Specific methodologies were used to achieve the objectives of this research. The literature review, brainstorming, interviews and development of the system are some of the methods that were used to achieve the objectives of this study. The research methodology is mainly through experiments and to study TeleWeaver SOA middleware architecture. Interviews were conducted to analyze and understand the community needs, since the application discussed in this thesis is tested and implemented for a rural community. The community is called Dwesa, and falls under the ICT project within the Siyakhula Living Lab (SLL). A basic prototyping and Unified Modeling Language (UML) was created to design the system. This thesis presents the design and implementation of a system that integrates legacy applications into an SOA middleware that brings flexibility and effectiveness to these ICT e-services. The research focuses on integrating legacy applications into Service Oriented Architecture (SOA) middleware. It seeks to bring flexibility to e-services that are developed for MRAs. The use of SOA architecture that supports re-usability and interoperability of application provides effectiveness to the e-services. The novelty of the system is in its flexibility, usability and sustainability. SOA is an approach that provides a separation between the interface of the service and its underlying implementation. One of the achievements of the integration project is its ability to connect to SOA middleware. This increases the effectiveness of these e-services. The usability and performance evaluations are conducted to test and evaluate the system within the SLL on the TeleWeaver platform. , Thesis (MSc) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-12
- Authors: Makamba, Makaziwe https://orcid.org/0000-0001-6998-4480
- Date: 2012-12
- Subjects: Service-oriented architecture (Computer science) , Computer architecture
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24294 , vital:62599
- Description: Information and Communication Technology (ICT) is a dynamic approach that is widely recognized as an innovative and powerful tool for socio-economic development, it is a key catalyst for the emergence of knowledge economy. ICT have been used to develop applications, promote transparency and efficiency in multiple services such e-Learning, e-Government, e-Health and e-Judiciary especially for Marginalized Rural Areas (MRAs). The ICT approach is designed to bridge the digital divide. This approach has been widely deployed in many programs and it has led to the development of a new field which is Information and Communication Technology for Development (ICT4D). Within the context of ICT4D there are arrays of e-services that have been deployed to improve the impoverished communities. Some of these applications have failed to bring the changes that were designed to bring in the community due to the use of old architectures. There is therefore a need to develop a system that will integrate legacy applications into contemporary architectures. To solve the problem of the legacy applications we have developed TeleWeaver Service Oriented Architecture (SOA) middleware into which we integrate an e-Commerce and e-Learning applications into SOA middleware. For this integration system there are specific technologies that were used to integrate legacy applications into SOA middleware: RESTful web services using the slim API, SOAP via Nu-SOAP technologies were used to integrate these legacy applications. Specific methodologies were used to achieve the objectives of this research. The literature review, brainstorming, interviews and development of the system are some of the methods that were used to achieve the objectives of this study. The research methodology is mainly through experiments and to study TeleWeaver SOA middleware architecture. Interviews were conducted to analyze and understand the community needs, since the application discussed in this thesis is tested and implemented for a rural community. The community is called Dwesa, and falls under the ICT project within the Siyakhula Living Lab (SLL). A basic prototyping and Unified Modeling Language (UML) was created to design the system. This thesis presents the design and implementation of a system that integrates legacy applications into an SOA middleware that brings flexibility and effectiveness to these ICT e-services. The research focuses on integrating legacy applications into Service Oriented Architecture (SOA) middleware. It seeks to bring flexibility to e-services that are developed for MRAs. The use of SOA architecture that supports re-usability and interoperability of application provides effectiveness to the e-services. The novelty of the system is in its flexibility, usability and sustainability. SOA is an approach that provides a separation between the interface of the service and its underlying implementation. One of the achievements of the integration project is its ability to connect to SOA middleware. This increases the effectiveness of these e-services. The usability and performance evaluations are conducted to test and evaluate the system within the SLL on the TeleWeaver platform. , Thesis (MSc) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-12
Preparation and characterisation of nanocomposite biodegradable films of hake fish gelatine and Na-montmorillonite
- Authors: Mutize, Innocent
- Date: 2012-12
- Subjects: Nanocomposites (Materials) , Food -- Packaging
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24261 , vital:62595
- Description: Hake fish (Merluccius paradoxus) based films were prepared using gelatine extracted from hake fish bones and skins. They were characterized using FTIR, TGA and XRD. Polyethylene glycol and distilled water were used as plasticizer and solvent respectively. Montmorillonite clay was also added to the film matrix at different concentration (1-13percent gelatine weight) to improve the films‟ functional properties. Fourier Transform Infrared (FTIR), Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) and Ultra Violet-Visible (UV-Vis) spectroscopy analysis were used to characterise gelatine extracted from hake fish bones and skins. The extraction time and temperature were varied between 30 mins to 120 mins and 45°C to 75°C respectively. The yields of the gelatines extracted at the stated conditions were calculated from the hydroxyproline content giving values of 30 to 39percent, 43 to 55percent and 50 to 57percent for extraction at 45°C, 60°C and 75°C respectively. The effect of polyethylene glycol content on the mechanical and barrier properties of hake fish gelatine films was also investigated. The addition of polyethylene glycol to the film solution increased the water vapour permeability from 0.0321 ± 0.0011 ng.m/m2.s.Pa to 0.0993 ± 0.0007 ng.m/m2.s.Pa between 5 and 35percent polyethylene glycol content and decreased tensile strength from 41.92 ± 2.17 MPa to 29.93 ± 0.17 MPa. Sodium treated Montmorillonite was incorporated in the hake fish gelatine film solution in order to assess the effect of Montmorillonite clay on the film mechanical, barrier and thermal properties. Hake fish gelatine-montmorillonite composite films were successfully prepared and characterized. X-ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) analysis indicated that the Montmorillonite clay in the film matrices was in an exfoliated state. Water vapour permeability was reduced from 0.0312 ± 0.0016 ng.m/m2.s.Pa to 0.0081 ± 0.0001ng.m/m2.s.Pa and tensile strength improved from 29.93 ± 0.17MPa to 76.78 ± 1.13 MPa. , Thesis (MSc) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-12
- Authors: Mutize, Innocent
- Date: 2012-12
- Subjects: Nanocomposites (Materials) , Food -- Packaging
- Language: English
- Type: Master's theses , text
- Identifier: http://hdl.handle.net/10353/24261 , vital:62595
- Description: Hake fish (Merluccius paradoxus) based films were prepared using gelatine extracted from hake fish bones and skins. They were characterized using FTIR, TGA and XRD. Polyethylene glycol and distilled water were used as plasticizer and solvent respectively. Montmorillonite clay was also added to the film matrix at different concentration (1-13percent gelatine weight) to improve the films‟ functional properties. Fourier Transform Infrared (FTIR), Sodium Dodecyl Sulfate Polyacrylamide Gel Electrophoresis (SDS-PAGE) and Ultra Violet-Visible (UV-Vis) spectroscopy analysis were used to characterise gelatine extracted from hake fish bones and skins. The extraction time and temperature were varied between 30 mins to 120 mins and 45°C to 75°C respectively. The yields of the gelatines extracted at the stated conditions were calculated from the hydroxyproline content giving values of 30 to 39percent, 43 to 55percent and 50 to 57percent for extraction at 45°C, 60°C and 75°C respectively. The effect of polyethylene glycol content on the mechanical and barrier properties of hake fish gelatine films was also investigated. The addition of polyethylene glycol to the film solution increased the water vapour permeability from 0.0321 ± 0.0011 ng.m/m2.s.Pa to 0.0993 ± 0.0007 ng.m/m2.s.Pa between 5 and 35percent polyethylene glycol content and decreased tensile strength from 41.92 ± 2.17 MPa to 29.93 ± 0.17 MPa. Sodium treated Montmorillonite was incorporated in the hake fish gelatine film solution in order to assess the effect of Montmorillonite clay on the film mechanical, barrier and thermal properties. Hake fish gelatine-montmorillonite composite films were successfully prepared and characterized. X-ray Diffraction (XRD) and Fourier Transform Infrared (FTIR) analysis indicated that the Montmorillonite clay in the film matrices was in an exfoliated state. Water vapour permeability was reduced from 0.0312 ± 0.0016 ng.m/m2.s.Pa to 0.0081 ± 0.0001ng.m/m2.s.Pa and tensile strength improved from 29.93 ± 0.17MPa to 76.78 ± 1.13 MPa. , Thesis (MSc) -- Faculty of Science and Agriculture, 2012
- Full Text:
- Date Issued: 2012-12