Bridging and enriching top-down and participatory learning: The case of smallholder, organic conservation agriculture farmers in Zimbabwe
- Authors: Mukute, Mutizwa
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/432967 , vital:72919 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122261"
- Description: This article discusses the combined use of top-down and participatory learning approaches during the course of a 42-month organic conservation agriculture project that is being implemented in eight districts of Mashonaland East Province in Zimbabwe. The initial 18-month project was extended by a further 24 months in order to build on what had been achieved by deepening organic conservation agriculture practices, by increasing the understanding of, and access to, markets, and by expanding farmer agency. The top-down approach involves farmer representatives, known as ‘access farmers’ in the project, undergoing training at training centres and then returning to their respective farmer associations to train other farmers in what they have learnt. Participatory learning includes farmer-to-farmer learning within and among associations, and trainers learning from, and acting on, farmer experiences. Expansive learning, which combines, and goes beyond, both approaches and allows for joint learning, innovation and agency, has been used to support the associations to learn about, practise and benefit from organic conservation agriculture. This was stimulated by change laboratory workshops being conducted with each of the 32 farmer associations formed during the first 18 months of the project. The main argument in the present article is that combining these seemingly opposite approaches to learning is feasible and is essential for accelerating practice-oriented changes in agriculture. The concept that appears to enable this linkage is dialectics.
- Full Text:
- Date Issued: 2012
- Authors: Mukute, Mutizwa
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/432967 , vital:72919 , xlink:href="https://www.ajol.info/index.php/sajee/article/view/122261"
- Description: This article discusses the combined use of top-down and participatory learning approaches during the course of a 42-month organic conservation agriculture project that is being implemented in eight districts of Mashonaland East Province in Zimbabwe. The initial 18-month project was extended by a further 24 months in order to build on what had been achieved by deepening organic conservation agriculture practices, by increasing the understanding of, and access to, markets, and by expanding farmer agency. The top-down approach involves farmer representatives, known as ‘access farmers’ in the project, undergoing training at training centres and then returning to their respective farmer associations to train other farmers in what they have learnt. Participatory learning includes farmer-to-farmer learning within and among associations, and trainers learning from, and acting on, farmer experiences. Expansive learning, which combines, and goes beyond, both approaches and allows for joint learning, innovation and agency, has been used to support the associations to learn about, practise and benefit from organic conservation agriculture. This was stimulated by change laboratory workshops being conducted with each of the 32 farmer associations formed during the first 18 months of the project. The main argument in the present article is that combining these seemingly opposite approaches to learning is feasible and is essential for accelerating practice-oriented changes in agriculture. The concept that appears to enable this linkage is dialectics.
- Full Text:
- Date Issued: 2012
Bruising in slaughter cattle: its relationship with creatine kinase (CK) levels and meat quality
- Authors: Mpakama, Thandiswa
- Date: 2012
- Subjects: Beef quality , Creatine kinase , Cattle -- Transportation
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11821 , http://hdl.handle.net/10353/d1006850 , Beef quality , Creatine kinase , Cattle -- Transportation
- Description: The objective of the study was to determine the effects of pre-slaughter conditions and anima-l related factors on bruising, creatine kinase (CK) and beef quality. Three hundred and twenty one cattle from three breeds (108 Bonsmara, 130 Beefmaster and 83 Brahman) were used in this study. The animals were grouped according to age categories as follows; Group 1(16months), Group 2 (18months) and Group 3 (24 months). Blood samples for CK determination were collected at exsanguisation using disposable vacutainer tubes. The Muscularis longisimus thoracis et lumborum (LTL) muscle was used to determine beef colour (L,* a* and b*) and ultimate pH. Significant P (<0.05) breed effects were observed on bruising score and CK levels with Bonsmara breed having the highest percentage (80 percent) of bruising score and higher CK (705.3±80.57) values. The higher CK levels were also in winter season. The effect of breed, sex and age at slaughter on meat quality (pHu, L*, a*, b*) was also observed. There were positive correlations between distance travelled and meat quality, while there was no relationship observed between CK and distance travelled. Therefore, it was concluded that animal related factors had an effect on meat quality and CK levels.
- Full Text:
- Date Issued: 2012
- Authors: Mpakama, Thandiswa
- Date: 2012
- Subjects: Beef quality , Creatine kinase , Cattle -- Transportation
- Language: English
- Type: Thesis , Masters , MSc Agric (Animal Science)
- Identifier: vital:11821 , http://hdl.handle.net/10353/d1006850 , Beef quality , Creatine kinase , Cattle -- Transportation
- Description: The objective of the study was to determine the effects of pre-slaughter conditions and anima-l related factors on bruising, creatine kinase (CK) and beef quality. Three hundred and twenty one cattle from three breeds (108 Bonsmara, 130 Beefmaster and 83 Brahman) were used in this study. The animals were grouped according to age categories as follows; Group 1(16months), Group 2 (18months) and Group 3 (24 months). Blood samples for CK determination were collected at exsanguisation using disposable vacutainer tubes. The Muscularis longisimus thoracis et lumborum (LTL) muscle was used to determine beef colour (L,* a* and b*) and ultimate pH. Significant P (<0.05) breed effects were observed on bruising score and CK levels with Bonsmara breed having the highest percentage (80 percent) of bruising score and higher CK (705.3±80.57) values. The higher CK levels were also in winter season. The effect of breed, sex and age at slaughter on meat quality (pHu, L*, a*, b*) was also observed. There were positive correlations between distance travelled and meat quality, while there was no relationship observed between CK and distance travelled. Therefore, it was concluded that animal related factors had an effect on meat quality and CK levels.
- Full Text:
- Date Issued: 2012
Budgeting, forecasting and financial planning as a strategic tool in the Eastern Cape's manufacturing industry
- Authors: Abrahams, Shaheed
- Date: 2012
- Subjects: Budget process -- South Africa -- Eastern Cape , Business forecasting -- South Africa -- Eastern Cape , Business planning -- South Africa -- Eastern Cape , Manufacturing industries -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:8940 , http://hdl.handle.net/10948/d1008408 , Budget process -- South Africa -- Eastern Cape , Business forecasting -- South Africa -- Eastern Cape , Business planning -- South Africa -- Eastern Cape , Manufacturing industries -- South Africa -- Eastern Cape
- Description: The primary objective of the study is to assess whether organisations are using their budgeting, forecasting and financial planning information as a strategic tool in the decision-making process. The research aims to investigate the various factors that hinder the success of the finance department in delivering a quality financial plan, budget or forecast to top management and the rest of the organisation.
- Full Text:
- Date Issued: 2012
- Authors: Abrahams, Shaheed
- Date: 2012
- Subjects: Budget process -- South Africa -- Eastern Cape , Business forecasting -- South Africa -- Eastern Cape , Business planning -- South Africa -- Eastern Cape , Manufacturing industries -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: vital:8940 , http://hdl.handle.net/10948/d1008408 , Budget process -- South Africa -- Eastern Cape , Business forecasting -- South Africa -- Eastern Cape , Business planning -- South Africa -- Eastern Cape , Manufacturing industries -- South Africa -- Eastern Cape
- Description: The primary objective of the study is to assess whether organisations are using their budgeting, forecasting and financial planning information as a strategic tool in the decision-making process. The research aims to investigate the various factors that hinder the success of the finance department in delivering a quality financial plan, budget or forecast to top management and the rest of the organisation.
- Full Text:
- Date Issued: 2012
Building a Graphical Fuzzing Framework
- Zeisberger, Sascha, Irwin, Barry V W
- Authors: Zeisberger, Sascha , Irwin, Barry V W
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429772 , vital:72638 , https://digifors.cs.up.ac.za/issa/2012/Proceedings/Research/59_ResearchInProgress.pdf
- Description: Fuzz testing is a robustness testing technique that sends malformed data to an application’s input. This is to test an application’s behaviour when presented with input beyond its specification. The main difference between traditional testing techniques and fuzz testing is that in most traditional techniques an application is tested according to a specification and rated on how well the application conforms to that specification. Fuzz testing tests beyond the scope of a specification by intelligently generating values that may be interpreted by an application in an unintended manner. The use of fuzz testing has been more prevalent in academic and security communities despite showing success in production environments. To measure the effectiveness of fuzz testing, an experiment was conducted where several publicly available applications were fuzzed. In some instances, fuzz testing was able to force an application into an invalid state and it was concluded that fuzz testing is a relevant testing technique that could assist in developing more robust applications. This success prompted a further investigation into fuzz testing in order to compile a list of requirements that makes an effective fuzzer. The aforementioned investigation assisted in the design of a fuzz testing framework, the goal of which is to make the process more accessible to users outside of an academic and security environment. Design methodologies and justifications of said framework are discussed, focusing on the graphical user interface components as this aspect of the framework is used to increase the usability of the framework.
- Full Text:
- Date Issued: 2012
- Authors: Zeisberger, Sascha , Irwin, Barry V W
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/429772 , vital:72638 , https://digifors.cs.up.ac.za/issa/2012/Proceedings/Research/59_ResearchInProgress.pdf
- Description: Fuzz testing is a robustness testing technique that sends malformed data to an application’s input. This is to test an application’s behaviour when presented with input beyond its specification. The main difference between traditional testing techniques and fuzz testing is that in most traditional techniques an application is tested according to a specification and rated on how well the application conforms to that specification. Fuzz testing tests beyond the scope of a specification by intelligently generating values that may be interpreted by an application in an unintended manner. The use of fuzz testing has been more prevalent in academic and security communities despite showing success in production environments. To measure the effectiveness of fuzz testing, an experiment was conducted where several publicly available applications were fuzzed. In some instances, fuzz testing was able to force an application into an invalid state and it was concluded that fuzz testing is a relevant testing technique that could assist in developing more robust applications. This success prompted a further investigation into fuzz testing in order to compile a list of requirements that makes an effective fuzzer. The aforementioned investigation assisted in the design of a fuzz testing framework, the goal of which is to make the process more accessible to users outside of an academic and security environment. Design methodologies and justifications of said framework are discussed, focusing on the graphical user interface components as this aspect of the framework is used to increase the usability of the framework.
- Full Text:
- Date Issued: 2012
Butterfly bones
- Authors: Gowans, Elisabeth
- Date: 2012
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5986 , http://hdl.handle.net/10962/d1015723
- Description: Butterfly Bones is a lyrical sequence of poetry and prose poems organised to trace a rhythmical, emotional pattern of experience. In its subject matter, the sequence presents an implied personal narrative recording the author's grief in the ten months following her mother's death in January 2011. It presents brief, vivid scenes from the poet's daily life in a rural village outside Grahamstown, and observations of creatures and her natural surroundings, which serve as a counterpoint to her grief. It can also be read as a meditation on writing, solitude and the possibilities of poetry.
- Full Text:
- Date Issued: 2012
- Authors: Gowans, Elisabeth
- Date: 2012
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5986 , http://hdl.handle.net/10962/d1015723
- Description: Butterfly Bones is a lyrical sequence of poetry and prose poems organised to trace a rhythmical, emotional pattern of experience. In its subject matter, the sequence presents an implied personal narrative recording the author's grief in the ten months following her mother's death in January 2011. It presents brief, vivid scenes from the poet's daily life in a rural village outside Grahamstown, and observations of creatures and her natural surroundings, which serve as a counterpoint to her grief. It can also be read as a meditation on writing, solitude and the possibilities of poetry.
- Full Text:
- Date Issued: 2012
Can contracts be both plain and precise?
- Siebörger, Ian, Adendorff, Ralph D
- Authors: Siebörger, Ian , Adendorff, Ralph D
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123299 , vital:35425 , https://doi.org/10.2989/16073614.2011.651944
- Description: One argument against the use of plain language in legal documents is that it is impossible to convey legal meanings in plain language with the same precision as in specialist legal discourse (Hunt, 2003). We tested this claim by redrafting an extract from a lease agreement into plain English in three stages, producing three versions of the extract in progressively plainer English. We submitted these with the original lease agreement to a senior advocate to elicit his opinion on whether the plain-language versions of the extract are equivalent to the original in legal force. Various differences between the versions are analysed using lexical semantics and Systemic Functional Grammar (as described in Halliday & Matthiessen, 2004). This analysis reveals that the redrafted versions could easily be altered to eliminate the difference between them and the original extract, and that ‘plain language’ as conceived by redrafters of official documents may be easy for non-experts to read, but more difficult for experts. This demonstrates that a ‘one-size-fits-all’ approach to readability is often not tenable, and that plain-language activists can learn much from research (such as Street, 1993) which asserts the existence of a plurality of literacies.
- Full Text:
- Date Issued: 2012
- Authors: Siebörger, Ian , Adendorff, Ralph D
- Date: 2012
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/123299 , vital:35425 , https://doi.org/10.2989/16073614.2011.651944
- Description: One argument against the use of plain language in legal documents is that it is impossible to convey legal meanings in plain language with the same precision as in specialist legal discourse (Hunt, 2003). We tested this claim by redrafting an extract from a lease agreement into plain English in three stages, producing three versions of the extract in progressively plainer English. We submitted these with the original lease agreement to a senior advocate to elicit his opinion on whether the plain-language versions of the extract are equivalent to the original in legal force. Various differences between the versions are analysed using lexical semantics and Systemic Functional Grammar (as described in Halliday & Matthiessen, 2004). This analysis reveals that the redrafted versions could easily be altered to eliminate the difference between them and the original extract, and that ‘plain language’ as conceived by redrafters of official documents may be easy for non-experts to read, but more difficult for experts. This demonstrates that a ‘one-size-fits-all’ approach to readability is often not tenable, and that plain-language activists can learn much from research (such as Street, 1993) which asserts the existence of a plurality of literacies.
- Full Text:
- Date Issued: 2012
Can project managers do it alone?: the role of total project leadership on project success
- Authors: Mangqalaza, Qaqambile
- Date: 2012
- Subjects: Project managers , Project management , Strategic planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8802 , http://hdl.handle.net/10948/d1017029
- Description: The primary objective of the study was to establish the role that is played by team member leadership and strategic leadership, in complementing project manager competencies, on project success. Ultimately, the study is meant to assist project organizations and project managers in crafting leadership development programmes and plans that entrench leadership as a complementary aspect among project participators. The study is modelled on the concept that there are essentially three levels of leadership in projects, namely: (a) executive, (b) management and (c) operational level (DuBrin, 2010). There is therefore a complementary leadership relationship between company executives, project managers and team members that contribute to project success. Most current project leadership practices emphasize the project manager’s competencies as the key driving force in project success. Howell and Shamir (2005) assert that many writers in leadership agree that leadership is an interdependent relationship between the leader and the follower, yet leadership theories are too “leader-centric”. Beyer (1999) and Yukl (1998) in Howell and Shamir (2005) also criticized charismatic leadership theories as promoting stereotypes of “heroic leadership” that single-handedly determine the fate of the groups and organizations and that followers are a submissive lot to the leader’s will and demands. The literature study revealed that there are different perspectives on project success. Project managers and team members mostly focus on operational objectives of cost, time and quality requirements to the detriment of the business results, yet top management focus on business results. Further the literature showed that certain leadership theories only recognise the project manager for leadership on projects while others accept that followers themselves are leaders and that formal leadership is becoming irrelevant. Leadership is meant to be distributed to various role players in the team since it is a complementary construct. The empirical study consisted of a structured questionnaire distributed to a population of company executives, project managers and project team members in various project organizations predominantly in the Eastern Cape. The structured questionnaire was aimed at gathering views on the aspects of project success and project leadership, especially the role played by the strategic leadership and team member leadership as active participants that complement the project manager in achieving project success. The results of the empirical study revealed that: Project success straddled both the notion of meeting time, cost and quality requirements as well as achieving strategic business results. Leadership is a relationship between the leader and the led and that it must be dispersed to various participators in the team. Top management (executives) play a valuable role in linking projects to strategy and ensuring an aligned selection of projects. Team members play an active role in leadership, empowering the project leader and influencing his or her behaviour and consequently determining the results of the leadership relationship. Recommendations are presented for increasing project success through total leadership. These recommendations include that: Management in project organisations should expand the definition and understanding of project success at all levels. Executive management in project organisations should always view projects as strategic weapons to compete in the market place. The strategic imperatives of projects and project selection are not a once-off exercise but further taken to implementation at project level through strategy implementation and monitoring. Team members should be recognised as active participators in project leadership relationship. It is an obsolete idea to assume that as a result of the project manager having good leadership qualities and competencies that the team members will automatically follow.
- Full Text:
- Date Issued: 2012
- Authors: Mangqalaza, Qaqambile
- Date: 2012
- Subjects: Project managers , Project management , Strategic planning
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8802 , http://hdl.handle.net/10948/d1017029
- Description: The primary objective of the study was to establish the role that is played by team member leadership and strategic leadership, in complementing project manager competencies, on project success. Ultimately, the study is meant to assist project organizations and project managers in crafting leadership development programmes and plans that entrench leadership as a complementary aspect among project participators. The study is modelled on the concept that there are essentially three levels of leadership in projects, namely: (a) executive, (b) management and (c) operational level (DuBrin, 2010). There is therefore a complementary leadership relationship between company executives, project managers and team members that contribute to project success. Most current project leadership practices emphasize the project manager’s competencies as the key driving force in project success. Howell and Shamir (2005) assert that many writers in leadership agree that leadership is an interdependent relationship between the leader and the follower, yet leadership theories are too “leader-centric”. Beyer (1999) and Yukl (1998) in Howell and Shamir (2005) also criticized charismatic leadership theories as promoting stereotypes of “heroic leadership” that single-handedly determine the fate of the groups and organizations and that followers are a submissive lot to the leader’s will and demands. The literature study revealed that there are different perspectives on project success. Project managers and team members mostly focus on operational objectives of cost, time and quality requirements to the detriment of the business results, yet top management focus on business results. Further the literature showed that certain leadership theories only recognise the project manager for leadership on projects while others accept that followers themselves are leaders and that formal leadership is becoming irrelevant. Leadership is meant to be distributed to various role players in the team since it is a complementary construct. The empirical study consisted of a structured questionnaire distributed to a population of company executives, project managers and project team members in various project organizations predominantly in the Eastern Cape. The structured questionnaire was aimed at gathering views on the aspects of project success and project leadership, especially the role played by the strategic leadership and team member leadership as active participants that complement the project manager in achieving project success. The results of the empirical study revealed that: Project success straddled both the notion of meeting time, cost and quality requirements as well as achieving strategic business results. Leadership is a relationship between the leader and the led and that it must be dispersed to various participators in the team. Top management (executives) play a valuable role in linking projects to strategy and ensuring an aligned selection of projects. Team members play an active role in leadership, empowering the project leader and influencing his or her behaviour and consequently determining the results of the leadership relationship. Recommendations are presented for increasing project success through total leadership. These recommendations include that: Management in project organisations should expand the definition and understanding of project success at all levels. Executive management in project organisations should always view projects as strategic weapons to compete in the market place. The strategic imperatives of projects and project selection are not a once-off exercise but further taken to implementation at project level through strategy implementation and monitoring. Team members should be recognised as active participators in project leadership relationship. It is an obsolete idea to assume that as a result of the project manager having good leadership qualities and competencies that the team members will automatically follow.
- Full Text:
- Date Issued: 2012
Can sport impact rational investor behaviour? : an evaluation of the impact of national sporting performance on stock market returns in South Africa
- Authors: De Beer, Carl Francois
- Date: 2012
- Subjects: Investments -- Psychological aspects -- Research -- South Africa Finance -- Psychological aspects -- Research -- South Africa Sports -- Economic aspects -- Research -- South Africa Sports -- Psychological aspects -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MEcon
- Identifier: vital:1013 , http://hdl.handle.net/10962/d1002748
- Description: The finance industry is an extremely fast and complex world dominated by the Efficient Markets Hypothesis (EMH). This theory contains many assumptions which include that investors are rational utility maximisers and that market prices reflect all relevant economic information available to the public. However, over the years, a new form of financial literature known as behavioural finance has been gaining momentum. Behavioural finance seeks to bridge the gap between psychology and economics in an attempt to gain a better understanding of how markets react to different situations. Behavioural finance has also gained much attention in recent years due to the EMH’s inability to explain many economic anomalies. This study first considers the differences between behavioural finance theory and EMH theory before explaining how an individual’s mood has the ability to influence one’s risk taking preferences. Mood changes were also found to be linked to changes in the way an individual reacts to different situations, the way they thinks and processes thoughts. Negative events were also found to have a greater influence on an individual’s mood than positive events did, resulting in an asymmetric relationship between positive and negative results. This study then examines numerous studies indicating how non-economic events can have a statistical and significant influence on stock market returns before analysing previous literature where sport was found to influence market prices. The aim of this study is to determine if South African national sporting performance can influence investors in such a way that it has the ability to impact on market returns. Using standard event study methodology, this study determines the constant mean return using the daily All-Share price index on the JSE for the period of 1 January 1990 to 31 December 2010. This study focuses on three of South Africa’s most popular sports, namely soccer, cricket and rugby and examine if these three sports have the ability to influence market returns. Although there is some evidence of a relationship between stock returns and sporting performance in the descriptive analysis, the regression results indicate that sporting performance in South Africa does not significantly explain abnormal market returns on the JSE. The study provides a number of possible reasons for this finding and concludes by suggesting areas for future research.
- Full Text:
- Date Issued: 2012
- Authors: De Beer, Carl Francois
- Date: 2012
- Subjects: Investments -- Psychological aspects -- Research -- South Africa Finance -- Psychological aspects -- Research -- South Africa Sports -- Economic aspects -- Research -- South Africa Sports -- Psychological aspects -- Research -- South Africa
- Language: English
- Type: Thesis , Masters , MEcon
- Identifier: vital:1013 , http://hdl.handle.net/10962/d1002748
- Description: The finance industry is an extremely fast and complex world dominated by the Efficient Markets Hypothesis (EMH). This theory contains many assumptions which include that investors are rational utility maximisers and that market prices reflect all relevant economic information available to the public. However, over the years, a new form of financial literature known as behavioural finance has been gaining momentum. Behavioural finance seeks to bridge the gap between psychology and economics in an attempt to gain a better understanding of how markets react to different situations. Behavioural finance has also gained much attention in recent years due to the EMH’s inability to explain many economic anomalies. This study first considers the differences between behavioural finance theory and EMH theory before explaining how an individual’s mood has the ability to influence one’s risk taking preferences. Mood changes were also found to be linked to changes in the way an individual reacts to different situations, the way they thinks and processes thoughts. Negative events were also found to have a greater influence on an individual’s mood than positive events did, resulting in an asymmetric relationship between positive and negative results. This study then examines numerous studies indicating how non-economic events can have a statistical and significant influence on stock market returns before analysing previous literature where sport was found to influence market prices. The aim of this study is to determine if South African national sporting performance can influence investors in such a way that it has the ability to impact on market returns. Using standard event study methodology, this study determines the constant mean return using the daily All-Share price index on the JSE for the period of 1 January 1990 to 31 December 2010. This study focuses on three of South Africa’s most popular sports, namely soccer, cricket and rugby and examine if these three sports have the ability to influence market returns. Although there is some evidence of a relationship between stock returns and sporting performance in the descriptive analysis, the regression results indicate that sporting performance in South Africa does not significantly explain abnormal market returns on the JSE. The study provides a number of possible reasons for this finding and concludes by suggesting areas for future research.
- Full Text:
- Date Issued: 2012
Capturefoundry: a gpu accelerated packet capture analysis tool
- Nottingham, Alastair, Richter, John, Irwin, Barry V W
- Authors: Nottingham, Alastair , Richter, John , Irwin, Barry V W
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430112 , vital:72666 , https://doi.org/10.1145/2389836.2389877
- Description: Packet captures are used to support a variety of tasks, including network administration, fault diagnosis and security and network related research. Despite their usefulness, processing packet capture files is a slow and tedious process that impedes the analysis of large, long-term captures. This paper discusses the primary components and observed performance of CaptureFoundry, a stand-alone capture analysis support tool designed to quickly map, filter and extract packets from large capture files using a combination of indexing techniques and GPU accelerated packet classification. All results are persistent, and may be used to rapidly extract small pre-filtered captures on demand that may be analysed quickly in existing capture analysis applications. Performance results show that CaptureFoundry is capable of generating multiple indexes and classification results for large captures at hundreds of megabytes per second, with minimal CPU and memory overhead and only minor additional storage space requirements.
- Full Text:
- Date Issued: 2012
- Authors: Nottingham, Alastair , Richter, John , Irwin, Barry V W
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/430112 , vital:72666 , https://doi.org/10.1145/2389836.2389877
- Description: Packet captures are used to support a variety of tasks, including network administration, fault diagnosis and security and network related research. Despite their usefulness, processing packet capture files is a slow and tedious process that impedes the analysis of large, long-term captures. This paper discusses the primary components and observed performance of CaptureFoundry, a stand-alone capture analysis support tool designed to quickly map, filter and extract packets from large capture files using a combination of indexing techniques and GPU accelerated packet classification. All results are persistent, and may be used to rapidly extract small pre-filtered captures on demand that may be analysed quickly in existing capture analysis applications. Performance results show that CaptureFoundry is capable of generating multiple indexes and classification results for large captures at hundreds of megabytes per second, with minimal CPU and memory overhead and only minor additional storage space requirements.
- Full Text:
- Date Issued: 2012
Cardiovascular disease and metabolic syndrome in health transition and evidence-based medicine: a perspective from Africa
- Authors: Longo-Mbenza, B
- Date: 2012
- Subjects: Cardiovascular Disease Cardiovascular systems -- Diseases -- Treatment
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/11260/1078 , vital:30578
- Description: The Cardiovascular Disease (CVD) pandemic worldwide presents a true challenge today with a high health burden that is only expected to rise. I address the causes and prevention of CVD, as well as CVD rehabilitation and physiology. As a member of the American Heart Association and European Society of cardiology, I practice under the level of evidence and the strength of recommendation of particular treatment options, as outlined in the tables below.
- Full Text:
- Date Issued: 2012
- Authors: Longo-Mbenza, B
- Date: 2012
- Subjects: Cardiovascular Disease Cardiovascular systems -- Diseases -- Treatment
- Language: English
- Type: text , Lectures
- Identifier: http://hdl.handle.net/11260/1078 , vital:30578
- Description: The Cardiovascular Disease (CVD) pandemic worldwide presents a true challenge today with a high health burden that is only expected to rise. I address the causes and prevention of CVD, as well as CVD rehabilitation and physiology. As a member of the American Heart Association and European Society of cardiology, I practice under the level of evidence and the strength of recommendation of particular treatment options, as outlined in the tables below.
- Full Text:
- Date Issued: 2012
Carriage of goods by sea - from Hague to Rotterdam: safer waters
- Authors: Metuge, Denning N
- Date: 2012
- Subjects: International trade , Transportation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10235 , http://hdl.handle.net/10948/d1011561 , International trade , Transportation
- Description: The back bone of international trade has always been international transport. Without good transport networks, the movement of goods and services from one frontier to another would be an uphill task, and would greatly hinder development in international trade. The impact of such poor transport networks would reflect negatively on economies that rely on international trade for the growth of their nations. Nevertheless, perfect transport networks would be useless if the performance of the business of carriage was not regulated by a law developed to meet the standards established by time, and that would regulate the relationship of the parties under contracts of carriage, mainly the carrier, consignor and consignee, so as to ensure certainty and equality in the allocation of risks between the parties thereunder. This research focuses on the carriage of goods by sea. Like most other modes of transport, one of the major issues that arises in the business of carriage of goods by sea is the conflict between the carrier, consignor and consignee, with regards to the allocation of risk in the carriage. Over the years, early rules that were developed to regulate the relationship of the parties under contracts of carriage of goods by sea placed the carrier in a dominant position over the consignor. The carrier issued a standard bill of lading which exempted him from almost all liability for damage or loss of the goods in his care. The consignors and bona fide third parties, not satisfied with the terms of carriage contracts brought a lot of pressure to bear on their governments to enact legislation protecting their interests in the transaction. The United States of America were the first to pass such national law revising the position of the parties under contracts of carriage. In 1893 the United States of America passed the Harter Act. This Act aimed at imposing limits of liability on the carrier to which no derogation could be brought. However, this was a dangerous precedence which was going to hinder international trade rather than improve on it, as different nations developing local legislation on carriage meant conflict of laws. In order to avoid the extensive nationalisation of carriage laws, the international maritime community set to develop rules that would regulate carriage by sea. Over the years convention has succeeded convention such that today four international regimes (The Hague Rules, Hague-Visby Rules, Hamburg Rules and Rotterdam Rules), exist regulating carriage of goods by sea. This research takes an in-depth look at these regimes that were developed to regulate carriage by sea, and the author aims to identify a particular regime that meets the standards of modern day practice of carriage of goods, and advocate for the ratification of this regime, to the exclusion of all others so as to foster uniformity, certainty and equality in the business of carriage of goods by sea.
- Full Text:
- Date Issued: 2012
- Authors: Metuge, Denning N
- Date: 2012
- Subjects: International trade , Transportation
- Language: English
- Type: Thesis , Masters , LLM
- Identifier: vital:10235 , http://hdl.handle.net/10948/d1011561 , International trade , Transportation
- Description: The back bone of international trade has always been international transport. Without good transport networks, the movement of goods and services from one frontier to another would be an uphill task, and would greatly hinder development in international trade. The impact of such poor transport networks would reflect negatively on economies that rely on international trade for the growth of their nations. Nevertheless, perfect transport networks would be useless if the performance of the business of carriage was not regulated by a law developed to meet the standards established by time, and that would regulate the relationship of the parties under contracts of carriage, mainly the carrier, consignor and consignee, so as to ensure certainty and equality in the allocation of risks between the parties thereunder. This research focuses on the carriage of goods by sea. Like most other modes of transport, one of the major issues that arises in the business of carriage of goods by sea is the conflict between the carrier, consignor and consignee, with regards to the allocation of risk in the carriage. Over the years, early rules that were developed to regulate the relationship of the parties under contracts of carriage of goods by sea placed the carrier in a dominant position over the consignor. The carrier issued a standard bill of lading which exempted him from almost all liability for damage or loss of the goods in his care. The consignors and bona fide third parties, not satisfied with the terms of carriage contracts brought a lot of pressure to bear on their governments to enact legislation protecting their interests in the transaction. The United States of America were the first to pass such national law revising the position of the parties under contracts of carriage. In 1893 the United States of America passed the Harter Act. This Act aimed at imposing limits of liability on the carrier to which no derogation could be brought. However, this was a dangerous precedence which was going to hinder international trade rather than improve on it, as different nations developing local legislation on carriage meant conflict of laws. In order to avoid the extensive nationalisation of carriage laws, the international maritime community set to develop rules that would regulate carriage by sea. Over the years convention has succeeded convention such that today four international regimes (The Hague Rules, Hague-Visby Rules, Hamburg Rules and Rotterdam Rules), exist regulating carriage of goods by sea. This research takes an in-depth look at these regimes that were developed to regulate carriage by sea, and the author aims to identify a particular regime that meets the standards of modern day practice of carriage of goods, and advocate for the ratification of this regime, to the exclusion of all others so as to foster uniformity, certainty and equality in the business of carriage of goods by sea.
- Full Text:
- Date Issued: 2012
Case study of the educational experiences of four teenage mothers in two high schools in the Buffalo City Metropole
- Authors: Adams, Hermie E
- Date: 2012
- Subjects: Teenage girls -- Sexual behavior -- South Africa -- Eastern Cape , High schools -- South Africa -- Eastern Cape -- Social conditions
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16168 , http://hdl.handle.net/10353/468 , Teenage girls -- Sexual behavior -- South Africa -- Eastern Cape , High schools -- South Africa -- Eastern Cape -- Social conditions
- Description: Teenage pregnancy is a worldwide phenomenon. World Health Organisation (2009) reports that teenage mothers between the ages of 15-19 years account for 11% of births recorded worldwide. In South Africa it has been estimated that teenagers aged 17-19 account for 93% of all teenage pregnancies. A large proportion of these adolescents return to school after giving birth. Research has shown that there is a great deal of controversy about not only pre-marital sex, but also concerning whether teenage mothers should be allowed back in school at all. The aim of this study was to gain some insights into the lived experiences of teenage mothers in schools with particular reference to how they cope with school work and the responsibilities of motherhood. A case study of four teenage mothers who returned to school after giving birth was carried out. In-depth phenomenological interviewing designed to elicit the voices of the selected adolescents was done. There were five main findings. First, all four teenagers were minors, under the age of 18 when they gave birth. Two of them were even under the statutory age of consent. Second, upon return to school, teenage mothers experienced stigmatisation from peers and teachers and this forced them to continually negotiate their dual identities as mothers and learners. Third, teenage mothers experienced psychological emotions of stress; low self-esteem; shame and depression. Fourth, they also had sociological experiences in the form of material, financial and social support from family and friends. In some cases they experienced rejection from peers and abandonment by boyfriends who had made them pregnant. Some educators discriminated against and ridiculed teenage mothers. Fifth, teenage mothers reorganised their lives after childbirth and established routines that enabled them to cope with the demands of school work and the responsibilities of motherhood. iii The study concludes that, although viewed with scepticism by sections of the community and some educators, and given that some pregnancies are a result of abuse and unequal power relations between men and women in society, the policy of allowing teenage mothers back to school after giving birth gives them another chance to re-focus their lives. It is recommended that the voices of teenage mothers who return to school after childbirth should be taken into account to inform any planning for future policies on teenage pregnancy by schools and the state. It is further recommended that all educators should also be trained to be able to assist the teenage mothers instead of alienating them. There should also be counselling services available for the teenage mothers to enable them to deal with psychological and sociological problems they might encounter. For further research, students from different backgrounds should be the target of similar research. Another area of research should focus on academic performance of teenage mothers who return to school after giving birth. Lastly, there should be research that seeks to link what is taught in the Life Orientation curriculum and voices of teenage mothers.
- Full Text:
- Date Issued: 2012
- Authors: Adams, Hermie E
- Date: 2012
- Subjects: Teenage girls -- Sexual behavior -- South Africa -- Eastern Cape , High schools -- South Africa -- Eastern Cape -- Social conditions
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:16168 , http://hdl.handle.net/10353/468 , Teenage girls -- Sexual behavior -- South Africa -- Eastern Cape , High schools -- South Africa -- Eastern Cape -- Social conditions
- Description: Teenage pregnancy is a worldwide phenomenon. World Health Organisation (2009) reports that teenage mothers between the ages of 15-19 years account for 11% of births recorded worldwide. In South Africa it has been estimated that teenagers aged 17-19 account for 93% of all teenage pregnancies. A large proportion of these adolescents return to school after giving birth. Research has shown that there is a great deal of controversy about not only pre-marital sex, but also concerning whether teenage mothers should be allowed back in school at all. The aim of this study was to gain some insights into the lived experiences of teenage mothers in schools with particular reference to how they cope with school work and the responsibilities of motherhood. A case study of four teenage mothers who returned to school after giving birth was carried out. In-depth phenomenological interviewing designed to elicit the voices of the selected adolescents was done. There were five main findings. First, all four teenagers were minors, under the age of 18 when they gave birth. Two of them were even under the statutory age of consent. Second, upon return to school, teenage mothers experienced stigmatisation from peers and teachers and this forced them to continually negotiate their dual identities as mothers and learners. Third, teenage mothers experienced psychological emotions of stress; low self-esteem; shame and depression. Fourth, they also had sociological experiences in the form of material, financial and social support from family and friends. In some cases they experienced rejection from peers and abandonment by boyfriends who had made them pregnant. Some educators discriminated against and ridiculed teenage mothers. Fifth, teenage mothers reorganised their lives after childbirth and established routines that enabled them to cope with the demands of school work and the responsibilities of motherhood. iii The study concludes that, although viewed with scepticism by sections of the community and some educators, and given that some pregnancies are a result of abuse and unequal power relations between men and women in society, the policy of allowing teenage mothers back to school after giving birth gives them another chance to re-focus their lives. It is recommended that the voices of teenage mothers who return to school after childbirth should be taken into account to inform any planning for future policies on teenage pregnancy by schools and the state. It is further recommended that all educators should also be trained to be able to assist the teenage mothers instead of alienating them. There should also be counselling services available for the teenage mothers to enable them to deal with psychological and sociological problems they might encounter. For further research, students from different backgrounds should be the target of similar research. Another area of research should focus on academic performance of teenage mothers who return to school after giving birth. Lastly, there should be research that seeks to link what is taught in the Life Orientation curriculum and voices of teenage mothers.
- Full Text:
- Date Issued: 2012
Cash transfers and poverty reduction in South Africa: a case study of old age pensions
- Authors: Kasere, Gayle Farai
- Date: 2012
- Subjects: Poverty -- Economic aspects -- South Africa -- Eastern Cape Poverty -- Grahamstown -- Eastern Cape Social security -- South Africa Pensions -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3321 , http://hdl.handle.net/10962/d1003109
- Description: Social assistance in the form of cash grants is a large and fiscally costly component of anti-poverty policy in South Africa. A critical question arises: Are the grants effective tools for reducing poverty in South Africa and, moreover, how significant is their impact on poverty? As a measure of reducing poverty, the government has expanded the social grants system since the advent of the new democracy in 1994. The country's social grant system is quite comprehensive and it is intended to cover vulnerable individuals over their life course from childhood to adulthood and into old age. Policy discourse surrounding the grants centres on the sustainability of the system and its implications for socio-economic development and poverty alleviation. It is therefore important that the significance of grants is identified and assessed particularly in relation to very poor households. This dissertation focuses specifically on one particular grant, namely, the old age pension. It does so in the context of the sustainable livelihoods conceptual framework and the history of the social grant system in South Africa. Statistical data collected by the South African government as well as more localised evidence gathered in the Eastern Cape town of Grahamstown is used to ascertain the significance of old age pensions for poverty reduction. While there is some evidence to suggest that pensions contribute to poverty reduction, this does not translate into poverty alleviation. In fact, there is some unevenness in the impact of pensions on poverty. In this regard, the decision-making structures in poor households regularly influence the way pension money is allocated and used within households. Grant money is normally shared in extended households, such that the pension does not simply benefit the recipient but the recipient's household as a whole. Although there is cause for concern regarding the propensity of social grants to affect people's behaviour negatively, there is a case to be made for retaining grants as an important, though not the only, form of anti-poverty strategy. This highlights the need for continued research on the social grant system and pensions more specifically.
- Full Text:
- Date Issued: 2012
- Authors: Kasere, Gayle Farai
- Date: 2012
- Subjects: Poverty -- Economic aspects -- South Africa -- Eastern Cape Poverty -- Grahamstown -- Eastern Cape Social security -- South Africa Pensions -- South Africa
- Language: English
- Type: Thesis , Masters , MSocSc
- Identifier: vital:3321 , http://hdl.handle.net/10962/d1003109
- Description: Social assistance in the form of cash grants is a large and fiscally costly component of anti-poverty policy in South Africa. A critical question arises: Are the grants effective tools for reducing poverty in South Africa and, moreover, how significant is their impact on poverty? As a measure of reducing poverty, the government has expanded the social grants system since the advent of the new democracy in 1994. The country's social grant system is quite comprehensive and it is intended to cover vulnerable individuals over their life course from childhood to adulthood and into old age. Policy discourse surrounding the grants centres on the sustainability of the system and its implications for socio-economic development and poverty alleviation. It is therefore important that the significance of grants is identified and assessed particularly in relation to very poor households. This dissertation focuses specifically on one particular grant, namely, the old age pension. It does so in the context of the sustainable livelihoods conceptual framework and the history of the social grant system in South Africa. Statistical data collected by the South African government as well as more localised evidence gathered in the Eastern Cape town of Grahamstown is used to ascertain the significance of old age pensions for poverty reduction. While there is some evidence to suggest that pensions contribute to poverty reduction, this does not translate into poverty alleviation. In fact, there is some unevenness in the impact of pensions on poverty. In this regard, the decision-making structures in poor households regularly influence the way pension money is allocated and used within households. Grant money is normally shared in extended households, such that the pension does not simply benefit the recipient but the recipient's household as a whole. Although there is cause for concern regarding the propensity of social grants to affect people's behaviour negatively, there is a case to be made for retaining grants as an important, though not the only, form of anti-poverty strategy. This highlights the need for continued research on the social grant system and pensions more specifically.
- Full Text:
- Date Issued: 2012
Causes and consequences of early marriage in Lusikisiki: a research paper
- Authors: Jongizulu, Siziwe
- Date: 2012
- Subjects: Teenage marriage -- South Africa -- Eastern Cape , Forced marriage -- South Africa , Children's rights -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9074 , http://hdl.handle.net/10948/d1008414 , Teenage marriage -- South Africa -- Eastern Cape , Forced marriage -- South Africa , Children's rights -- South Africa -- Eastern Cape
- Description: The purpose of the study was to identify causes and consequences of early marriages in Lusikisiki. The population of this study is a convenience sample from Lusikisiki. The researcher thought that this was appropriate because these subjects would be sharing their personal experiences in the form of case studies. The ages of subjects that were interviewed were 40 years & 47 years old (both married early) and those that married late were both 50 years old. The idea that guided the study was an exploratory one aimed at understanding the phenomenon of early marriage. The aim was to explore the following ideas: Young girls are being given into marriage at their early age by their parents because of the bride price (ilobola)Women that are given into marriage early feel victimized by this process early marriage disrupts the school pattern of young girls Men are the main beneficiaries of early marriage.
- Full Text:
- Date Issued: 2012
- Authors: Jongizulu, Siziwe
- Date: 2012
- Subjects: Teenage marriage -- South Africa -- Eastern Cape , Forced marriage -- South Africa , Children's rights -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9074 , http://hdl.handle.net/10948/d1008414 , Teenage marriage -- South Africa -- Eastern Cape , Forced marriage -- South Africa , Children's rights -- South Africa -- Eastern Cape
- Description: The purpose of the study was to identify causes and consequences of early marriages in Lusikisiki. The population of this study is a convenience sample from Lusikisiki. The researcher thought that this was appropriate because these subjects would be sharing their personal experiences in the form of case studies. The ages of subjects that were interviewed were 40 years & 47 years old (both married early) and those that married late were both 50 years old. The idea that guided the study was an exploratory one aimed at understanding the phenomenon of early marriage. The aim was to explore the following ideas: Young girls are being given into marriage at their early age by their parents because of the bride price (ilobola)Women that are given into marriage early feel victimized by this process early marriage disrupts the school pattern of young girls Men are the main beneficiaries of early marriage.
- Full Text:
- Date Issued: 2012
Causes and effects of teachers' job satisfaction or dissatisfaction and their impact on leaner performance: a case study of two schools in the Ngqeleni Area of the Libode Mega-District, Eastern Cape Province of South Africa
- Authors: Dukwana, Mzamo Jeffrey
- Date: 2012
- Subjects: Teachers -- Job satisfaction -- Teaching and learning , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18433 , http://hdl.handle.net/11260/d1007159
- Description: The study investigated the relationship between teachers' job satisfaction-or dissatisfaction-and learner performance in two schools (one Junior Secondary School and one Senior Secondary School) in the Libode Mega-district, Eastern Cape Province, South Africa. The study is qualitative in nature; the interview was used as the method of collecting data. Six School Management Team (SMT) members and ten teachers were purposively selected from the two schools in the Libode Mega-district. The researcher administered the interview and interviewed the selected SMT members and teachers. The researcher used the video/sound/audio recorder as the research instrument to collect data. To analyze data, the researcher transcribed the recorded interview responses, presented the responses without editing them, interpreted the responses and themes. The findings were derived from the themes. The main findings of the study revealed that there was low morale and job dissatisfaction among teachers. The study`s finding of “low morale and job dissatisfaction among teachers” could be regarded as the reference of the general situation ('picture') of the relationship between teachers` job dissatisfaction and learner performance in the schools of the Libode Mega Education District. The findings have also revealed that there is a proportional relationship between teachers` job satisfaction and learner performance, i.e. the more satisfied teachers are with their jobs the more likely they perform better on their tasks, this results in good leaner performance, while low the levels of job satisfaction among teachers result in poor learner performance. The study recommends that the website- based, electronic information systems should be developed by the National Department of Education in order to grant teachers, or any school stakeholder, absolute anonymity to log or report complaints, dissatisfaction, suggestions, disapproval, appraisals and opinions on matters that concern the education system in South Africa. The study recommends that pupil-teacher ratio policy, and policies on working conditions in schools should be constantly reviewed. The introduction of change- management workshops for teachers to adapt to innovations in the education curriculum is also recommended.
- Full Text:
- Date Issued: 2012
- Authors: Dukwana, Mzamo Jeffrey
- Date: 2012
- Subjects: Teachers -- Job satisfaction -- Teaching and learning , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18433 , http://hdl.handle.net/11260/d1007159
- Description: The study investigated the relationship between teachers' job satisfaction-or dissatisfaction-and learner performance in two schools (one Junior Secondary School and one Senior Secondary School) in the Libode Mega-district, Eastern Cape Province, South Africa. The study is qualitative in nature; the interview was used as the method of collecting data. Six School Management Team (SMT) members and ten teachers were purposively selected from the two schools in the Libode Mega-district. The researcher administered the interview and interviewed the selected SMT members and teachers. The researcher used the video/sound/audio recorder as the research instrument to collect data. To analyze data, the researcher transcribed the recorded interview responses, presented the responses without editing them, interpreted the responses and themes. The findings were derived from the themes. The main findings of the study revealed that there was low morale and job dissatisfaction among teachers. The study`s finding of “low morale and job dissatisfaction among teachers” could be regarded as the reference of the general situation ('picture') of the relationship between teachers` job dissatisfaction and learner performance in the schools of the Libode Mega Education District. The findings have also revealed that there is a proportional relationship between teachers` job satisfaction and learner performance, i.e. the more satisfied teachers are with their jobs the more likely they perform better on their tasks, this results in good leaner performance, while low the levels of job satisfaction among teachers result in poor learner performance. The study recommends that the website- based, electronic information systems should be developed by the National Department of Education in order to grant teachers, or any school stakeholder, absolute anonymity to log or report complaints, dissatisfaction, suggestions, disapproval, appraisals and opinions on matters that concern the education system in South Africa. The study recommends that pupil-teacher ratio policy, and policies on working conditions in schools should be constantly reviewed. The introduction of change- management workshops for teachers to adapt to innovations in the education curriculum is also recommended.
- Full Text:
- Date Issued: 2012
CdTe quantum dots functionalized with 4-amino-2, 2, 6, 6-tetramethylpiperidine-N-oxide as luminescent nanoprobe for the sensitive recognition of bromide ion
- Adegoke, Oluwasesan, Hosten, Eric C, McCleland, Cedric, Nyokong, Tebello
- Authors: Adegoke, Oluwasesan , Hosten, Eric C , McCleland, Cedric , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/244393 , vital:51253 , xlink:href="https://doi.org/10.1016/j.aca.2012.01.040"
- Description: A novel bromide ion-selective modified nanoprobe sensor based on 4-amino-2,2,6,6-tetramethylpiperidine-N-oxide (4AT)-functionalized CdTe quantum dots (QDs-4AT) has been developed. Fluorescence quenching of the QDs by 4AT was observed. The functionalized QDs-4AT nanoprobe allowed a highly sensitive determination of bromide ion via analyte-induced change in the photoluminescence (fluorescence recovery) of the modified QDs. A detection limit of 0.6 nM of bromide ion was obtained, while the interfering effect of other inorganic cations and anions was investigated to examine the selectivity of the nanoprobe. The linear range was between 0.01 and 0.13 μM. Combined fluorescence lifetime and electron paramagnetic resonance measurements confirmed electron transfer processes between bromide ion and QDs-4AT.
- Full Text:
- Date Issued: 2012
- Authors: Adegoke, Oluwasesan , Hosten, Eric C , McCleland, Cedric , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/244393 , vital:51253 , xlink:href="https://doi.org/10.1016/j.aca.2012.01.040"
- Description: A novel bromide ion-selective modified nanoprobe sensor based on 4-amino-2,2,6,6-tetramethylpiperidine-N-oxide (4AT)-functionalized CdTe quantum dots (QDs-4AT) has been developed. Fluorescence quenching of the QDs by 4AT was observed. The functionalized QDs-4AT nanoprobe allowed a highly sensitive determination of bromide ion via analyte-induced change in the photoluminescence (fluorescence recovery) of the modified QDs. A detection limit of 0.6 nM of bromide ion was obtained, while the interfering effect of other inorganic cations and anions was investigated to examine the selectivity of the nanoprobe. The linear range was between 0.01 and 0.13 μM. Combined fluorescence lifetime and electron paramagnetic resonance measurements confirmed electron transfer processes between bromide ion and QDs-4AT.
- Full Text:
- Date Issued: 2012
Challenges experienced in the first year of implementation of a teaching and learning virtual partnership at the University of Namibia
- Mufeti, K, Foster, Gregory G, Terzoli, Alfredo
- Authors: Mufeti, K , Foster, Gregory G , Terzoli, Alfredo
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431234 , vital:72756 , https://rcetj.org/index.php/rcetj/article/view/178
- Description: Advances in information and communication technologies are enabling higher educa-tion institutions to build virtual partnerships with other institutions. Virtual partner-ships are defined here as collaborations between geographically dispersed institutions, where interaction between these institutions is enabled mainly by electronic modes of communication. This article reports on the participants’ experiences of the implemen-tation of one such partnership from the perspective of a partner in a developing con-text. It uses the SANTED Virtual Classroom Project (VCP), a virtual partnership initia-tive between the Departments of Computer Science at the University of Namibia (UNAM) and Rhodes University (RU), as a case study. In the VCP, the department at RU was tasked with building teaching and human resource capacity in the department at UNAM. The article focuses on the challenges experienced at UNAM during the first year of implementation of the VCP and lessons learned.
- Full Text:
- Date Issued: 2012
- Authors: Mufeti, K , Foster, Gregory G , Terzoli, Alfredo
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/431234 , vital:72756 , https://rcetj.org/index.php/rcetj/article/view/178
- Description: Advances in information and communication technologies are enabling higher educa-tion institutions to build virtual partnerships with other institutions. Virtual partner-ships are defined here as collaborations between geographically dispersed institutions, where interaction between these institutions is enabled mainly by electronic modes of communication. This article reports on the participants’ experiences of the implemen-tation of one such partnership from the perspective of a partner in a developing con-text. It uses the SANTED Virtual Classroom Project (VCP), a virtual partnership initia-tive between the Departments of Computer Science at the University of Namibia (UNAM) and Rhodes University (RU), as a case study. In the VCP, the department at RU was tasked with building teaching and human resource capacity in the department at UNAM. The article focuses on the challenges experienced at UNAM during the first year of implementation of the VCP and lessons learned.
- Full Text:
- Date Issued: 2012
Challenges faced by female secondary school principals in the Qumbu Education District of the Eastern Cape Province of South Africa
- Authors: Sobekwa, Jonguxolo
- Date: 2012
- Subjects: School principals -- Education (Secondary) , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18453 , http://hdl.handle.net/11260/d1007759
- Description: The purpose of this study was to investigate and explore the challenges faced by female secondary school principals when discharging their duties. This study was done because it was not a normal practice before 1994 to have a female person as the head of a learning institution. This was specifically linked to the implementation of equity as enshrined and entrenched in the constitution no.108, of 1996 of the Republic of South Africa. It is almost 18 years since the proclamation of equity in the constitution; it was therefore of great importance to evaluate the ground covered in terms of implementation of this equity. The equity mentioned in Chapter 2, section 9 of the constitution resulted in the formulation of the Employment Equity Act no.55 of 1998 as amended. The implementation of the Employment Equity Act no.55 of 1998 was expected to have an impact on the way the female school secondary principals were received by the community. Currently all departments are compelled to employ women in managerial positions and this receives opposition in some sectors of the population. This study was conducted in Qumbu education district in the Eastern Cape Province of South Africa. It focused on secondary school principals. The study used a quantitative research design to elicit data from the respondents. Data were collected from 46 participants through the use of a questionnaire. 32 questionnaires were returned and the data were processed. The Statistical Package for Social Sciences (SPSS) was used in the analysis of the data. The findings of the study revealed several challenges confronting female secondary school principals both in the workplace and at home. In the workplace, on one hand, female principals are faced with insubordination from male educators; poor parental involvement and cultural stereotypes; and on the other hand, at home, they were confronted by minimal support from their partners/ spouses. In the light of the findings, the researcher recommended that the Department of Basic Education organize capacity-building workshops to develop leadership skills; replacement strategies for ageing principals; women‟s conferences to advocate women‟s rights; and programmes for female principals and their husbands, called Men As Partners (MAP). The study succeeded in portraying a picture of what is presently taking place in secondary schools that are headed by female principals. Some of the limitations encountered by the researcher during the study included the reluctance of the participants to take part in the research, the non-accessibility of schools in deep rural areas, the return rate of completed questionnaires; and the obtaining of permission to undertake the study.
- Full Text:
- Date Issued: 2012
- Authors: Sobekwa, Jonguxolo
- Date: 2012
- Subjects: School principals -- Education (Secondary) , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18453 , http://hdl.handle.net/11260/d1007759
- Description: The purpose of this study was to investigate and explore the challenges faced by female secondary school principals when discharging their duties. This study was done because it was not a normal practice before 1994 to have a female person as the head of a learning institution. This was specifically linked to the implementation of equity as enshrined and entrenched in the constitution no.108, of 1996 of the Republic of South Africa. It is almost 18 years since the proclamation of equity in the constitution; it was therefore of great importance to evaluate the ground covered in terms of implementation of this equity. The equity mentioned in Chapter 2, section 9 of the constitution resulted in the formulation of the Employment Equity Act no.55 of 1998 as amended. The implementation of the Employment Equity Act no.55 of 1998 was expected to have an impact on the way the female school secondary principals were received by the community. Currently all departments are compelled to employ women in managerial positions and this receives opposition in some sectors of the population. This study was conducted in Qumbu education district in the Eastern Cape Province of South Africa. It focused on secondary school principals. The study used a quantitative research design to elicit data from the respondents. Data were collected from 46 participants through the use of a questionnaire. 32 questionnaires were returned and the data were processed. The Statistical Package for Social Sciences (SPSS) was used in the analysis of the data. The findings of the study revealed several challenges confronting female secondary school principals both in the workplace and at home. In the workplace, on one hand, female principals are faced with insubordination from male educators; poor parental involvement and cultural stereotypes; and on the other hand, at home, they were confronted by minimal support from their partners/ spouses. In the light of the findings, the researcher recommended that the Department of Basic Education organize capacity-building workshops to develop leadership skills; replacement strategies for ageing principals; women‟s conferences to advocate women‟s rights; and programmes for female principals and their husbands, called Men As Partners (MAP). The study succeeded in portraying a picture of what is presently taking place in secondary schools that are headed by female principals. Some of the limitations encountered by the researcher during the study included the reluctance of the participants to take part in the research, the non-accessibility of schools in deep rural areas, the return rate of completed questionnaires; and the obtaining of permission to undertake the study.
- Full Text:
- Date Issued: 2012
Challenges faced by high school managers in dealing with pregnant learners in their schools: a case study of selected high schools in the Idutywa district, Eastern Cape Region
- Authors: Tyumre, Nocawe
- Date: 2012
- Subjects: School principals -- Pregnant teenagers -- Education (Secondary) , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18448 , http://hdl.handle.net/11260/d1007300
- Description: The purpose of the study was to investigate the challenges faced by high school managers in dealing with pregnant learners in their schools and also ways of dealing with such challenges in selected Senior Secondary Schools in the Idutywa Education District (IED) in the Eastern Cape Province. The study mainly focused on rural schools. Qualitative research method was used and a Case Study design was used to conduct the study. The sample constituted of 16 high School Management Team (SMT) members from the four chosen high schools. An interview schedule designed by the researcher was used to gather data. The collected data were analysed using codes, segments, categories and themes. The researcher interpreted the data and the findings of the study showed that pregnancy changed the behaviour of female learners as a result, School Management Teams (SMT) found it difficult to deal with pregnant learner behaviours in terms of punishing them or expelling them due to South African Schools Act (1996). The study showed that, the School Management Teams in the four selected high schools felt that there should be parental involvement in schools when dealing with learner behaviours. The study showed that pregnant learners dropout of school before they completed their matriculation and they returned anytime after giving birth and SMT had no choice but to accept them even if they returned in the middle of the year. The study further showed that teachers had to assist pregnant learners by organizing catch up programmes so that they produce good results at the end of the year. According to the findings of the study it was clear that pregnancy really affected school policies in terms of learner discipline, learner absenteeism, school dropout and learner overall results. The researcher recommended that, the Department of Education should formulate a policy on pregnant learners that will not allow pregnant learners to attend school while being pregnant in order to assist School Management Teams in schools. The formulated policy should allow School Management Teams to expel pregnant learners in school.
- Full Text:
- Date Issued: 2012
- Authors: Tyumre, Nocawe
- Date: 2012
- Subjects: School principals -- Pregnant teenagers -- Education (Secondary) , South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , M Ed
- Identifier: vital:18448 , http://hdl.handle.net/11260/d1007300
- Description: The purpose of the study was to investigate the challenges faced by high school managers in dealing with pregnant learners in their schools and also ways of dealing with such challenges in selected Senior Secondary Schools in the Idutywa Education District (IED) in the Eastern Cape Province. The study mainly focused on rural schools. Qualitative research method was used and a Case Study design was used to conduct the study. The sample constituted of 16 high School Management Team (SMT) members from the four chosen high schools. An interview schedule designed by the researcher was used to gather data. The collected data were analysed using codes, segments, categories and themes. The researcher interpreted the data and the findings of the study showed that pregnancy changed the behaviour of female learners as a result, School Management Teams (SMT) found it difficult to deal with pregnant learner behaviours in terms of punishing them or expelling them due to South African Schools Act (1996). The study showed that, the School Management Teams in the four selected high schools felt that there should be parental involvement in schools when dealing with learner behaviours. The study showed that pregnant learners dropout of school before they completed their matriculation and they returned anytime after giving birth and SMT had no choice but to accept them even if they returned in the middle of the year. The study further showed that teachers had to assist pregnant learners by organizing catch up programmes so that they produce good results at the end of the year. According to the findings of the study it was clear that pregnancy really affected school policies in terms of learner discipline, learner absenteeism, school dropout and learner overall results. The researcher recommended that, the Department of Education should formulate a policy on pregnant learners that will not allow pregnant learners to attend school while being pregnant in order to assist School Management Teams in schools. The formulated policy should allow School Management Teams to expel pregnant learners in school.
- Full Text:
- Date Issued: 2012
Challenges of instructional leadership in historically disadvantaged schools in South Africa
- Authors: Tshazibana, Vukile Shadrack
- Date: 2012
- Subjects: School management and organization -- South Africa , Educational leadership -- South Africa , Children with social disabilities -- Education -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9565 , http://hdl.handle.net/10948/d1016059
- Description: The research presented in this thesis investigates challenges faced by principals in historically disadvantaged schools in terms of their role as instructional leaders facilitating the implementation of curriculum policies. The study consists of two parts. The first study sampled 25 school principals, 80 teachers and 11 department of education officials from the Uitenhage and Port Elizabeth education districts in the Eastern Cape. Data obtained in the first study were generated by administering a pen-and-paper questionnaire and individual interviews to selected participants. The second study employed an online questionnaire that was open to principals, teachers and departmental officials in all provinces of South Africa in order to generate data over as wide a geographic range as possible. Mixed methods were used to analyse the qualitative and quantitative data from the two studies. Thematic analysis techniques were employed to categorise qualitative data and the quantitative data were subjected to analytical techniques to provide descriptive and inferential statistics. The data revealed that school principals view themselves as change agents who should be in the forefront of change and curriculum implementation, and that they believe that they know what is expected of them in this regard. However, they recognise that they are not adequately prepared for the task of instructional leadership. The data also suggest that teachers have expectations that principals should be trained in instructional leadership and work closely with departmental officials in order to provide guidance and leadership at school level to address their professional needs. Problems related to capacity and skills of subject advisors and other district officials were revealed by the study. These issues are generally and informally recognised, but have not been formally raised within the Department of Education. The findings of the study also highlight the fact that, after nearly two decades in the new political dispensation, there are still vast differences within the South African schooling system between school types. These differences are most evident between ex-Model C schools and historically disadvantaged ex-DET schools, and it is recognised that principals in ex-DET schools need support tailored to their particular circumstances and context. The findings in this study support the notion that much needs to be done in South Africa in terms of empowering school principals; especially those from historically disadvantaged schools. The data provide insights into some of the constraints of local context, which enables better understandings of the challenges of instructional leadership in historically disadvantaged schools. These understandings should be of value when considering strategies to support principals in their role of instructional leaders.
- Full Text:
- Date Issued: 2012
- Authors: Tshazibana, Vukile Shadrack
- Date: 2012
- Subjects: School management and organization -- South Africa , Educational leadership -- South Africa , Children with social disabilities -- Education -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:9565 , http://hdl.handle.net/10948/d1016059
- Description: The research presented in this thesis investigates challenges faced by principals in historically disadvantaged schools in terms of their role as instructional leaders facilitating the implementation of curriculum policies. The study consists of two parts. The first study sampled 25 school principals, 80 teachers and 11 department of education officials from the Uitenhage and Port Elizabeth education districts in the Eastern Cape. Data obtained in the first study were generated by administering a pen-and-paper questionnaire and individual interviews to selected participants. The second study employed an online questionnaire that was open to principals, teachers and departmental officials in all provinces of South Africa in order to generate data over as wide a geographic range as possible. Mixed methods were used to analyse the qualitative and quantitative data from the two studies. Thematic analysis techniques were employed to categorise qualitative data and the quantitative data were subjected to analytical techniques to provide descriptive and inferential statistics. The data revealed that school principals view themselves as change agents who should be in the forefront of change and curriculum implementation, and that they believe that they know what is expected of them in this regard. However, they recognise that they are not adequately prepared for the task of instructional leadership. The data also suggest that teachers have expectations that principals should be trained in instructional leadership and work closely with departmental officials in order to provide guidance and leadership at school level to address their professional needs. Problems related to capacity and skills of subject advisors and other district officials were revealed by the study. These issues are generally and informally recognised, but have not been formally raised within the Department of Education. The findings of the study also highlight the fact that, after nearly two decades in the new political dispensation, there are still vast differences within the South African schooling system between school types. These differences are most evident between ex-Model C schools and historically disadvantaged ex-DET schools, and it is recognised that principals in ex-DET schools need support tailored to their particular circumstances and context. The findings in this study support the notion that much needs to be done in South Africa in terms of empowering school principals; especially those from historically disadvantaged schools. The data provide insights into some of the constraints of local context, which enables better understandings of the challenges of instructional leadership in historically disadvantaged schools. These understandings should be of value when considering strategies to support principals in their role of instructional leaders.
- Full Text:
- Date Issued: 2012