A post restucturing assessment of employee attitudes in South African National Science Council
- Authors: Bugaari, Lynn
- Date: 2012
- Subjects: Job enrichment , Employees -- Attitudes , Employee morale , Performance standards
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9945 , http://hdl.handle.net/10948/d1013702
- Description: Research problem: The restructuring of an organisation can be classified as a transformational intervention (Litwin & Burke, 1992). As such is it has a potential to significantly influence key employee attitudes that are related to employee and organisational performance. Any deterioration in these attitudes could impact negatively on organisational outcomes. As part of the monitoring and review of change interventions, management needs to understand the change in employee attitudes towards their work and management in their business units and towards the broader organisation in order that, if necessary, corrective action can be taken. Research objectives: To address the research problem, research objectives and questions were established. The main objective of the study was to investigate whether there has been a change in attitudes of employees in two business units of a South African National Science Council after the implementation of restructuring in the organisation and the business units. The key attitudes to be measured are job and management satisfaction, perceived organisational support, organisational commitment and a dimension of employee engagement, dedication. Research questions: Four research questions were established and these were; What is the change in employee attitudes post-restructuring? In particular what is the change in employee job satisfaction; management satisfaction, employee engagement, commitment to the organisation and perceived organisational support? What is the relationship between the sub-groups, distinguished by gender, occupational level, race, home language, age, number of years of service and business unit, and employee attitudes pre-restructuring? What is the relationship between the sub-groups distinguished by gender, occupational level, race, home language, age, number of years of service and business unit, and employee attitudes post-restructuring? What is the relationship between the sub-groups distinguished by gender, occupational level, race, home language, age, number of years of service and business unit, and the change in employee attitudes pre and post-restructuring? Research design: The nature of this research is descriptive. In order to solve the research questions the researcher used a pre-test and post-test measurement of employee attitudes. A survey using a structured self-administered questionnaire was used to collect information regarding employee attitudes before and after the restructuring of the organisation and business units. Major findings: The results from the survey showed that there was a change in the levels of organisational commitment, job satisfaction and management satisfaction at the National Science Council after the restructuring had taken place. Also, the impact of the sub-groups in the organisation on affective factors was evident in the level of occupation and employee engagement, race and management satisfaction, the business unit and the levels of perceived organisational support, management satisfaction and employee engagement, home language and employee engagement, the number of years the employee had worked for the organisation and management satisfaction, age and job satisfaction and employee engagement.
- Full Text:
- Date Issued: 2012
- Authors: Bugaari, Lynn
- Date: 2012
- Subjects: Job enrichment , Employees -- Attitudes , Employee morale , Performance standards
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:9945 , http://hdl.handle.net/10948/d1013702
- Description: Research problem: The restructuring of an organisation can be classified as a transformational intervention (Litwin & Burke, 1992). As such is it has a potential to significantly influence key employee attitudes that are related to employee and organisational performance. Any deterioration in these attitudes could impact negatively on organisational outcomes. As part of the monitoring and review of change interventions, management needs to understand the change in employee attitudes towards their work and management in their business units and towards the broader organisation in order that, if necessary, corrective action can be taken. Research objectives: To address the research problem, research objectives and questions were established. The main objective of the study was to investigate whether there has been a change in attitudes of employees in two business units of a South African National Science Council after the implementation of restructuring in the organisation and the business units. The key attitudes to be measured are job and management satisfaction, perceived organisational support, organisational commitment and a dimension of employee engagement, dedication. Research questions: Four research questions were established and these were; What is the change in employee attitudes post-restructuring? In particular what is the change in employee job satisfaction; management satisfaction, employee engagement, commitment to the organisation and perceived organisational support? What is the relationship between the sub-groups, distinguished by gender, occupational level, race, home language, age, number of years of service and business unit, and employee attitudes pre-restructuring? What is the relationship between the sub-groups distinguished by gender, occupational level, race, home language, age, number of years of service and business unit, and employee attitudes post-restructuring? What is the relationship between the sub-groups distinguished by gender, occupational level, race, home language, age, number of years of service and business unit, and the change in employee attitudes pre and post-restructuring? Research design: The nature of this research is descriptive. In order to solve the research questions the researcher used a pre-test and post-test measurement of employee attitudes. A survey using a structured self-administered questionnaire was used to collect information regarding employee attitudes before and after the restructuring of the organisation and business units. Major findings: The results from the survey showed that there was a change in the levels of organisational commitment, job satisfaction and management satisfaction at the National Science Council after the restructuring had taken place. Also, the impact of the sub-groups in the organisation on affective factors was evident in the level of occupation and employee engagement, race and management satisfaction, the business unit and the levels of perceived organisational support, management satisfaction and employee engagement, home language and employee engagement, the number of years the employee had worked for the organisation and management satisfaction, age and job satisfaction and employee engagement.
- Full Text:
- Date Issued: 2012
An analysis of the Southern African Development Community (SADC) preventive diplomacy in the kingdom of Lesotho: a case study
- Authors: Bukae, Nkosi Makhonya
- Date: 2012
- Subjects: Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8196 , http://hdl.handle.net/10948/d1008296 , Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Description: The focus of this study is the Southern African Development Community (SADC) preventive diplomacy interventions in Lesotho in 1994, 1998 and 2007. The core aim of the study was to evaluate the efficacy of the SADC security mechanism (the Organ on Politics, Defence and Security (OPDS) in conflict prevention, management and resolution on the basis of the Lesotho experience. Data for this qualitative case study was collected through interviews and document analysis. The twenty four participants for the study were drawn from the SADC OPDS unit, Lesotho political parties, Civil Society Organisations (CSOs), Academics from the University of Botswana (UB) and the National University of Lesotho (NUL), retired Botswana Defence officers who participated in the Lesotho missions and office of the post-2007election dispute dialogue facilitator in Lesotho. Documents on the SADC Treaties, Protocols, Communiqués and interventions in other set ups were used to highlight its operational policies, mandate, structures, successes and challenges. Lesotho was chosen as a case study because SADC employed both non-coercive (SADC Troika and Eminent Person mediation, 1994 and 2007 respectively) and coercive measures (the 1998 military intervention). The findings of the study revealed that SADC as a regional body had its own successes and challenges. Different perceptions on the SADC interventions in Lesotho emerged mainly between the participants from the ruling party and the opposition parties. While the former commended SADC for successfully mitigating the calamitous effects of 1994, 1998 and 2007 post-electoral violence, the opposition parties viewed the regional organisations as engaged in illegal interference in the domestic affairs of the country to defend the incumbent governing party. It also emerged from the study that the SADC security mechanism has numerous structural and operational flaws. There were several unanswered questions revolving around the legality and mandate of some of the missions. For instance, no concrete evidence emerged as to whether the 1998 military intervention was authorised by the SADC. The study also revealed that SADC has learnt valuable lessons from the Lesotho missions. Some of the reforms which the SADC has introduced in the OPDS such as the establishment of the SADC Stand by Force, Early Warning structures, the Mediation Unit, and a panel of expert mediators emanated mainly from the Lesotho experiences. The study recommends that SADC needs to harmonise the efforts of its OPDS structures such as the Mediation Unit; the Troika; the Inter-State Defence and Security Committee (ISDSC); the Inter-State Politics and Diplomacy Committee (ISPDC) and the Summit of Heads of States and Governments for rapid, coherent and well coordinated interventions in future regional preventive missions. It is also recommended that SADC should focus on identifying and mitigating underlying causal factors such as underdevelopment; poverty; deprivation of freedoms, marginalisation and other forms of social stratifications and oppression in its preventive diplomacy missions if durable peace is to be achieved in Lesotho and any other future cases.
- Full Text:
- Date Issued: 2012
- Authors: Bukae, Nkosi Makhonya
- Date: 2012
- Subjects: Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: vital:8196 , http://hdl.handle.net/10948/d1008296 , Southern African Development Community , Diplomatic negotiations in international disputes , Diplomacy , Conflict management -- Lesotho , Africa, Southern -- Politics and government , Lesotho -- Politics and government
- Description: The focus of this study is the Southern African Development Community (SADC) preventive diplomacy interventions in Lesotho in 1994, 1998 and 2007. The core aim of the study was to evaluate the efficacy of the SADC security mechanism (the Organ on Politics, Defence and Security (OPDS) in conflict prevention, management and resolution on the basis of the Lesotho experience. Data for this qualitative case study was collected through interviews and document analysis. The twenty four participants for the study were drawn from the SADC OPDS unit, Lesotho political parties, Civil Society Organisations (CSOs), Academics from the University of Botswana (UB) and the National University of Lesotho (NUL), retired Botswana Defence officers who participated in the Lesotho missions and office of the post-2007election dispute dialogue facilitator in Lesotho. Documents on the SADC Treaties, Protocols, Communiqués and interventions in other set ups were used to highlight its operational policies, mandate, structures, successes and challenges. Lesotho was chosen as a case study because SADC employed both non-coercive (SADC Troika and Eminent Person mediation, 1994 and 2007 respectively) and coercive measures (the 1998 military intervention). The findings of the study revealed that SADC as a regional body had its own successes and challenges. Different perceptions on the SADC interventions in Lesotho emerged mainly between the participants from the ruling party and the opposition parties. While the former commended SADC for successfully mitigating the calamitous effects of 1994, 1998 and 2007 post-electoral violence, the opposition parties viewed the regional organisations as engaged in illegal interference in the domestic affairs of the country to defend the incumbent governing party. It also emerged from the study that the SADC security mechanism has numerous structural and operational flaws. There were several unanswered questions revolving around the legality and mandate of some of the missions. For instance, no concrete evidence emerged as to whether the 1998 military intervention was authorised by the SADC. The study also revealed that SADC has learnt valuable lessons from the Lesotho missions. Some of the reforms which the SADC has introduced in the OPDS such as the establishment of the SADC Stand by Force, Early Warning structures, the Mediation Unit, and a panel of expert mediators emanated mainly from the Lesotho experiences. The study recommends that SADC needs to harmonise the efforts of its OPDS structures such as the Mediation Unit; the Troika; the Inter-State Defence and Security Committee (ISDSC); the Inter-State Politics and Diplomacy Committee (ISPDC) and the Summit of Heads of States and Governments for rapid, coherent and well coordinated interventions in future regional preventive missions. It is also recommended that SADC should focus on identifying and mitigating underlying causal factors such as underdevelopment; poverty; deprivation of freedoms, marginalisation and other forms of social stratifications and oppression in its preventive diplomacy missions if durable peace is to be achieved in Lesotho and any other future cases.
- Full Text:
- Date Issued: 2012
Synthesis and photophysical properties of covalent conjugates of aqua platinum (II) and octacarboxy-substituted zinc phthalocyanine
- Bulgakov, Roman A, Kuznetsova, Nina A, Dolotova, Olga V, Solovieva, Ludmila I, Mack, John, Chidawanyika, Wadzanai J U, Kaliya, Oleg L, Nyokong, Tebello
- Authors: Bulgakov, Roman A , Kuznetsova, Nina A , Dolotova, Olga V , Solovieva, Ludmila I , Mack, John , Chidawanyika, Wadzanai J U , Kaliya, Oleg L , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/242726 , vital:51073 , xlink:href="https://doi.org/10.1142/S1088424612501209"
- Description: New covalent conjugates of aqua platinum(II) and octacarboxy-substituted zinc phthalocyanine, bearing one, two, three and four aqua platinum moieties on the periphery of the Pc ligand have been synthesized and characterized. The effect of the stepwise introduction of the aqua platinums on the photophysical and photochemical properties of these compounds has been investigated in dimethylsulfoxide solution. It has been found that aqua platinum moieties have only a limited effect on the dynamics of the singlet and triplet excited states, on the ability to sensitize singlet oxygen formation and on the photostability. Each conjugate has a high singlet oxygen quantum yield (ΦΔ 0.51–0.62) and thus retains potential for use as a dual action anticancer drugs by acting as a sensitizer for PDT in addition to the likely chemotherapeutic effects of the Pt(II) complexes.
- Full Text:
- Date Issued: 2012
- Authors: Bulgakov, Roman A , Kuznetsova, Nina A , Dolotova, Olga V , Solovieva, Ludmila I , Mack, John , Chidawanyika, Wadzanai J U , Kaliya, Oleg L , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/242726 , vital:51073 , xlink:href="https://doi.org/10.1142/S1088424612501209"
- Description: New covalent conjugates of aqua platinum(II) and octacarboxy-substituted zinc phthalocyanine, bearing one, two, three and four aqua platinum moieties on the periphery of the Pc ligand have been synthesized and characterized. The effect of the stepwise introduction of the aqua platinums on the photophysical and photochemical properties of these compounds has been investigated in dimethylsulfoxide solution. It has been found that aqua platinum moieties have only a limited effect on the dynamics of the singlet and triplet excited states, on the ability to sensitize singlet oxygen formation and on the photostability. Each conjugate has a high singlet oxygen quantum yield (ΦΔ 0.51–0.62) and thus retains potential for use as a dual action anticancer drugs by acting as a sensitizer for PDT in addition to the likely chemotherapeutic effects of the Pt(II) complexes.
- Full Text:
- Date Issued: 2012
The analysis of the strain level and the predicted human error probability for critical hospital tasks
- Authors: Burford, Eva-Maria
- Date: 2012
- Subjects: Nursing errors -- South Africa -- Prevention , Nursing -- South Africa -- Psychological aspects , Hospitals -- Employees -- Health and hygiene -- South Africa , Nursing -- Job stress -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5104 , http://hdl.handle.net/10962/d1005182 , Nursing errors -- South Africa -- Prevention , Nursing -- South Africa -- Psychological aspects , Hospitals -- Employees -- Health and hygiene -- South Africa , Nursing -- Job stress -- South Africa
- Description: South African hospitals, as a result of numerous factors, have the problem of an increasing workload for nursing staff, which in turn may affect patient treatment quality. This project aimed at addressing patient treatment quality specifically from the perspective of worker capabilities by investigating the strain level and predicted human error probability associated with specific patient-centered tasks in the South African health care sector. This was achieved through two independent yet interlinked studies which focused on seven patient-centred tasks. The tasks analysed were the tasks of setting up and changing intravenous medication, administering injection and pill medication, measuring blood glucose, temperature and heart rate and blood pressure. In the first study, work environment and task characteristics, task structure and execution were analysed. In addition to the task execution, the resulting strain levels, in the form of heart rate measures and subjective ratings of workload, were studied. The second study determined the error protocols and predictive error probability within the healthcare environment for the seven pre-defined tasks. The results for the first study established that different organizational and environment factors could affect task complexity and workload. The individual task components and information processing requirements for each task was also established. For the strain analysis, significant results for the tasks were determined for heart rate frequency and the heart rate variability measures, but some of these were contradictory. For the second study, specific error protocols and error reporting data were determined for the hospital where this research was conducted. Additionally the predictive error probability for the pre-defined tasks was determined. This combined approach and collective results indicate that strain and predictive error probability as a result of task workload can be determined in the field as well as being able to identify which factors have an effect on task strain and error probability. The value of this research lies in the foundation that the gathered information provides and the numerous potential applications of this data. These applications include providing recommendations aimed at improving nursing work environment with regards to workload, improving patient treatment as a result of a reduction in errors and the potential foundation these results provide for future research
- Full Text:
- Date Issued: 2012
- Authors: Burford, Eva-Maria
- Date: 2012
- Subjects: Nursing errors -- South Africa -- Prevention , Nursing -- South Africa -- Psychological aspects , Hospitals -- Employees -- Health and hygiene -- South Africa , Nursing -- Job stress -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5104 , http://hdl.handle.net/10962/d1005182 , Nursing errors -- South Africa -- Prevention , Nursing -- South Africa -- Psychological aspects , Hospitals -- Employees -- Health and hygiene -- South Africa , Nursing -- Job stress -- South Africa
- Description: South African hospitals, as a result of numerous factors, have the problem of an increasing workload for nursing staff, which in turn may affect patient treatment quality. This project aimed at addressing patient treatment quality specifically from the perspective of worker capabilities by investigating the strain level and predicted human error probability associated with specific patient-centered tasks in the South African health care sector. This was achieved through two independent yet interlinked studies which focused on seven patient-centred tasks. The tasks analysed were the tasks of setting up and changing intravenous medication, administering injection and pill medication, measuring blood glucose, temperature and heart rate and blood pressure. In the first study, work environment and task characteristics, task structure and execution were analysed. In addition to the task execution, the resulting strain levels, in the form of heart rate measures and subjective ratings of workload, were studied. The second study determined the error protocols and predictive error probability within the healthcare environment for the seven pre-defined tasks. The results for the first study established that different organizational and environment factors could affect task complexity and workload. The individual task components and information processing requirements for each task was also established. For the strain analysis, significant results for the tasks were determined for heart rate frequency and the heart rate variability measures, but some of these were contradictory. For the second study, specific error protocols and error reporting data were determined for the hospital where this research was conducted. Additionally the predictive error probability for the pre-defined tasks was determined. This combined approach and collective results indicate that strain and predictive error probability as a result of task workload can be determined in the field as well as being able to identify which factors have an effect on task strain and error probability. The value of this research lies in the foundation that the gathered information provides and the numerous potential applications of this data. These applications include providing recommendations aimed at improving nursing work environment with regards to workload, improving patient treatment as a result of a reduction in errors and the potential foundation these results provide for future research
- Full Text:
- Date Issued: 2012
Marketers' perceptions of negotiation behaviour in a global scale
- Authors: Burhan, Ahmad Mtengwa
- Date: 2012
- Subjects: Negotiation in business -- Tanzania , Business enterprises -- Tanzania , Export marketing -- Tanzania
- Language: English
- Type: Thesis , Doctoral , DBA
- Identifier: vital:9297 , http://hdl.handle.net/10948/d1013705
- Description: The success of international business depends on effective negotiations. Such negotiations do no happen in a vacuum, but usually in a specific environment that includes; time, surrounding, place, culture and people. The business environmental setting includes legal and political pluralism, currency fluctuations, foreign exchange, foreign government controls, bureaucracy, instability, change, ideological and cultural differences, as well as the influence of external stakeholders. These business negotiations environments can influence the behaviour of negotiation in global firms, impacting firms internationally. The reasons to negotiate on an international level may include considerations such as: choice of venue, culture to observe; and the outcome of the negotiation process. The aim of this study was to determine the influence of the international marketing environment, awareness of negotiation skill, interest groups and negotiation atmosphere on behaviour of marketers in a global firm. The study assessed the impact of negotiation behaviour on business agreements based on trust and certainty and level of commitment. The purpose of the study was to gauge the impact of negotiations behaviour pertaining to failure of business negotiations in Tanzania. In addition, the study endeavoured to determine the impact of environmental variables on the negotiation behaviour of marketers. The questionnaires used in the study comprised seven variables with statements linked to a five-point Likert-type interval scale varying from “strongly agree” to “strongly disagree. Self-administered questionnaires were used for data collection from global firms’ marketers and their management representatives; 323 questionnaires were collected from respondents. This study contributed to the literature on negotiation behaviour in a global firm and the perceptions of such global marketers in Tanzania. Many international companies in Tanzania find it difficult to formulate and implement a comprehensive business strategy; therefore, this study intends to equip international business managers with the leadership skills required. Based on the findings of this study, the negotiators and government are expected to play a major role in business negotiations to promote effective trade agreements despite limitations of political influence in the negotiation process. Political stability in a country enhances foreign business which in turn improves negotiation behaviour. A just legal system, with clear and unambiguous business guidelines and policies would benefit and promote local businesses and government representatives and negotiators in respect of international business negotiation behaviour. Reasonable tax and interest rates and fair business policies should improve international trade negotiations and business practices. In order to conduct successful international negotiations aspects such as culture, language differences, customs and traditions are important and should enjoy high priority. Aspects such as these mentioned influence the conducting and atmosphere and outcome of negotiations. The study reveals that the use of specialists and interpreters are imperative to guarantee understanding and successful outcomes. According to the findings negotiators should possess good negotiating skills to be able to steer the negotiation process through the different phases of negotiation that requires different negotiating skills at each stage of negotiation. It is clear that to have successful win-win negotiation outcomes the leading negotiator should put together a good team, with expert knowledge of product or conditions and negotiating skill, as well as possessing the attributes mentioned in the previous paragraph. The negotiator should also be able to determine authority limits, patience and observe negotiation ethics. No team disagreements concerning the business/project matters should be aired in front of counterparts during negotiations and professional conduct must prevail at all times. The findings of the study indicated that awareness of the practice of offering concessions regarding government tariff laws and price discounts that is in line with traditions in Tanzania. Concessions should not be made until all issues have been discussed, to avoid granting unnecessary benefits during negotiation that might be interpreted as bribery. This study concluded that it is important that marketers meet the requirements of business practices by sharing clear guidelines and policies regarding business practices, as this will lead to fruitful decisions. It was also found that negotiation behaviour improves when negotiators are willing to share information and agree that all communication must be in writing; marketers are more comfortable when there is a clear understanding of matters agreed upon, the choice of trading partners and that all trading agreements are written and a contract signed by all the parties, including governments where necessary. Marketers’ intentions are derived from the common interests of both parties and the negotiations should always take place in avenue that is suitable to both parties, conducted in fairness and offers must be reasonable and attainable with a positive outcome as the ultimate aim for both parties. This study reveals that negotiators insist on the use an agent or agents and sub-contractors to ensure mutually beneficial strategic business partnerships. However, when the role of the interest groups is explained to all participants, negotiation behaviour improves. It can also be concluded that negotiators allow interest groups to participate as team leaders and their number should be equal to the number of foreign negotiators, to ensure that marketers feel more at ease and comfortable to participate. An atmosphere based on bargaining power exerts a positive influence on the level of commitment among negotiating partners; and can be a predictor of the range of agreement as well as shape limits and priorities among dimensions of rivalry. However, it is important for marketers to express willingness to accept the terms of their counterpart’s bargaining zone regardless of non-profitable quotas at stake; identify areas of bargaining from foreign traders even if they are not attractive enough for local traders and are comfortable with the counterparts’ bargaining zone regarding fixed rates on exporting and importing quotas between trading partners to build trust among negotiators. In conclusion, it was found that negotiation behaviour has a positive influence on the level of commitment of trading partners. A positive business relationship is created on trust and a high-level of commitment which should be of great satisfaction to negotiating parties for future prospective negotiations.
- Full Text:
- Date Issued: 2012
- Authors: Burhan, Ahmad Mtengwa
- Date: 2012
- Subjects: Negotiation in business -- Tanzania , Business enterprises -- Tanzania , Export marketing -- Tanzania
- Language: English
- Type: Thesis , Doctoral , DBA
- Identifier: vital:9297 , http://hdl.handle.net/10948/d1013705
- Description: The success of international business depends on effective negotiations. Such negotiations do no happen in a vacuum, but usually in a specific environment that includes; time, surrounding, place, culture and people. The business environmental setting includes legal and political pluralism, currency fluctuations, foreign exchange, foreign government controls, bureaucracy, instability, change, ideological and cultural differences, as well as the influence of external stakeholders. These business negotiations environments can influence the behaviour of negotiation in global firms, impacting firms internationally. The reasons to negotiate on an international level may include considerations such as: choice of venue, culture to observe; and the outcome of the negotiation process. The aim of this study was to determine the influence of the international marketing environment, awareness of negotiation skill, interest groups and negotiation atmosphere on behaviour of marketers in a global firm. The study assessed the impact of negotiation behaviour on business agreements based on trust and certainty and level of commitment. The purpose of the study was to gauge the impact of negotiations behaviour pertaining to failure of business negotiations in Tanzania. In addition, the study endeavoured to determine the impact of environmental variables on the negotiation behaviour of marketers. The questionnaires used in the study comprised seven variables with statements linked to a five-point Likert-type interval scale varying from “strongly agree” to “strongly disagree. Self-administered questionnaires were used for data collection from global firms’ marketers and their management representatives; 323 questionnaires were collected from respondents. This study contributed to the literature on negotiation behaviour in a global firm and the perceptions of such global marketers in Tanzania. Many international companies in Tanzania find it difficult to formulate and implement a comprehensive business strategy; therefore, this study intends to equip international business managers with the leadership skills required. Based on the findings of this study, the negotiators and government are expected to play a major role in business negotiations to promote effective trade agreements despite limitations of political influence in the negotiation process. Political stability in a country enhances foreign business which in turn improves negotiation behaviour. A just legal system, with clear and unambiguous business guidelines and policies would benefit and promote local businesses and government representatives and negotiators in respect of international business negotiation behaviour. Reasonable tax and interest rates and fair business policies should improve international trade negotiations and business practices. In order to conduct successful international negotiations aspects such as culture, language differences, customs and traditions are important and should enjoy high priority. Aspects such as these mentioned influence the conducting and atmosphere and outcome of negotiations. The study reveals that the use of specialists and interpreters are imperative to guarantee understanding and successful outcomes. According to the findings negotiators should possess good negotiating skills to be able to steer the negotiation process through the different phases of negotiation that requires different negotiating skills at each stage of negotiation. It is clear that to have successful win-win negotiation outcomes the leading negotiator should put together a good team, with expert knowledge of product or conditions and negotiating skill, as well as possessing the attributes mentioned in the previous paragraph. The negotiator should also be able to determine authority limits, patience and observe negotiation ethics. No team disagreements concerning the business/project matters should be aired in front of counterparts during negotiations and professional conduct must prevail at all times. The findings of the study indicated that awareness of the practice of offering concessions regarding government tariff laws and price discounts that is in line with traditions in Tanzania. Concessions should not be made until all issues have been discussed, to avoid granting unnecessary benefits during negotiation that might be interpreted as bribery. This study concluded that it is important that marketers meet the requirements of business practices by sharing clear guidelines and policies regarding business practices, as this will lead to fruitful decisions. It was also found that negotiation behaviour improves when negotiators are willing to share information and agree that all communication must be in writing; marketers are more comfortable when there is a clear understanding of matters agreed upon, the choice of trading partners and that all trading agreements are written and a contract signed by all the parties, including governments where necessary. Marketers’ intentions are derived from the common interests of both parties and the negotiations should always take place in avenue that is suitable to both parties, conducted in fairness and offers must be reasonable and attainable with a positive outcome as the ultimate aim for both parties. This study reveals that negotiators insist on the use an agent or agents and sub-contractors to ensure mutually beneficial strategic business partnerships. However, when the role of the interest groups is explained to all participants, negotiation behaviour improves. It can also be concluded that negotiators allow interest groups to participate as team leaders and their number should be equal to the number of foreign negotiators, to ensure that marketers feel more at ease and comfortable to participate. An atmosphere based on bargaining power exerts a positive influence on the level of commitment among negotiating partners; and can be a predictor of the range of agreement as well as shape limits and priorities among dimensions of rivalry. However, it is important for marketers to express willingness to accept the terms of their counterpart’s bargaining zone regardless of non-profitable quotas at stake; identify areas of bargaining from foreign traders even if they are not attractive enough for local traders and are comfortable with the counterparts’ bargaining zone regarding fixed rates on exporting and importing quotas between trading partners to build trust among negotiators. In conclusion, it was found that negotiation behaviour has a positive influence on the level of commitment of trading partners. A positive business relationship is created on trust and a high-level of commitment which should be of great satisfaction to negotiating parties for future prospective negotiations.
- Full Text:
- Date Issued: 2012
Silenced women of John Steinbeck's dustbowl trilogy
- Authors: Burri, Stella Teresia
- Date: 2012
- Subjects: Steinbeck, John, 1902-1968 -- Criticism and interpretation , Steinbeck, John, 1902-1968 -- Grapes of wrath , Steinbeck, John, 1902-1968 -- Political and social views , Steinbeck, John, 1902-1968 -- Appreciation
- Language: English
- Type: Thesis , Masters , MA (English)
- Identifier: vital:11838 , http://hdl.handle.net/10353/d1005643 , Steinbeck, John, 1902-1968 -- Criticism and interpretation , Steinbeck, John, 1902-1968 -- Grapes of wrath , Steinbeck, John, 1902-1968 -- Political and social views , Steinbeck, John, 1902-1968 -- Appreciation
- Description: The primary aim of this project is to examine selected works by John Steinbeck, a significant American writer. Through a close contextual and textual analysis of Steinbeck’s Dustbowl Trilogy, which consists of the novels In Dubious Battle, Of Mice and Men, and The Grapes of Wrath, this project will interrogate Steinbeck’s contribution to the silencing of women and their inferior placement in their society and determine the extent to which Steinbeck promotes patriarchal ideology through his literature. A close examination of the modernist era in which these novels were written will provide the method of interrogating Steinbeck’s portrayal of women’s situation during the Depression and determine whether it is a reflection of the reality of women’s situation at that time given the political and environmental factors of the 1930s. The theories of various feminist critics, including Simone de Beauvoir, Judith Butler, Gayle Rubin, Luce Irigaray, Sherry Ortner, and Sandra Gilbert and Susan Gubar will be explored in order to elucidate the author’s treatment of the female characters and determine the extent to which patriarchal ideology is embedded in his writing. A brief examination of some of his contemporaries, namely F. Scott Fitzgerald, William Faulkner and Ernest Hemingway, will reveal the general treatment of women in male authored modernist literature and determine the extent to which Steinbeck’s female subjugation is representative.
- Full Text:
- Date Issued: 2012
- Authors: Burri, Stella Teresia
- Date: 2012
- Subjects: Steinbeck, John, 1902-1968 -- Criticism and interpretation , Steinbeck, John, 1902-1968 -- Grapes of wrath , Steinbeck, John, 1902-1968 -- Political and social views , Steinbeck, John, 1902-1968 -- Appreciation
- Language: English
- Type: Thesis , Masters , MA (English)
- Identifier: vital:11838 , http://hdl.handle.net/10353/d1005643 , Steinbeck, John, 1902-1968 -- Criticism and interpretation , Steinbeck, John, 1902-1968 -- Grapes of wrath , Steinbeck, John, 1902-1968 -- Political and social views , Steinbeck, John, 1902-1968 -- Appreciation
- Description: The primary aim of this project is to examine selected works by John Steinbeck, a significant American writer. Through a close contextual and textual analysis of Steinbeck’s Dustbowl Trilogy, which consists of the novels In Dubious Battle, Of Mice and Men, and The Grapes of Wrath, this project will interrogate Steinbeck’s contribution to the silencing of women and their inferior placement in their society and determine the extent to which Steinbeck promotes patriarchal ideology through his literature. A close examination of the modernist era in which these novels were written will provide the method of interrogating Steinbeck’s portrayal of women’s situation during the Depression and determine whether it is a reflection of the reality of women’s situation at that time given the political and environmental factors of the 1930s. The theories of various feminist critics, including Simone de Beauvoir, Judith Butler, Gayle Rubin, Luce Irigaray, Sherry Ortner, and Sandra Gilbert and Susan Gubar will be explored in order to elucidate the author’s treatment of the female characters and determine the extent to which patriarchal ideology is embedded in his writing. A brief examination of some of his contemporaries, namely F. Scott Fitzgerald, William Faulkner and Ernest Hemingway, will reveal the general treatment of women in male authored modernist literature and determine the extent to which Steinbeck’s female subjugation is representative.
- Full Text:
- Date Issued: 2012
Self-perceived professional identity of pharmacy educators
- Authors: Burton, Susan
- Date: 2012
- Subjects: Academic identity , Communities of practice , Identity (Philosophical concept) , Pharmacy -- Study and teaching , Pharmacy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10139 , http://hdl.handle.net/10948/d1008352 , Academic identity , Communities of practice , Identity (Philosophical concept) , Pharmacy -- Study and teaching , Pharmacy
- Description: The philosophy of pharmaceutical care, which defines a patient-centred approach to practice, has been embraced and upheld by national and international pharmaceutical organisations for two decades. However, pharmacists have been slow to change their practice and implement a pharmaceutical care approach. It has been suggested that amongst other factors, short-comings in pharmaceutical education have contributed to this reluctance of the profession to transform practice. Efforts to address these short-comings in pharmaceutical education have focused on the curriculum and pedagogic practices, and not on the pharmacy educators themselves. Palmer (1998) asserts that “good teaching cannot be reduced to technique; good teaching comes from the identity and integrity of the teacher”. In essence, "we teach who we are" and good teachers have one common trait: “a strong sense of personal identity that infuses their work”. This study identified, described and analysed the self-perceived professional identities of pharmacy educators within the South African context. This included ascertaining factors and contexts which contributed to participants’ self-perception of their professional identity. In an effort to understand the influence the educators have on practice and on changing practice and vice-versa, the attitudes, beliefs and behaviours of participants regarding the philosophy and practice of pharmaceutical care, and pharmaceutical education were also explored. Situated within a constructivist-interpretive, qualitative paradigm and making use of methodological triangulation, this study was conducted in three phases, each employing a different qualitative method to collect data. The first phase made use of narrative analysis to gain an in-depth understanding of pharmacy educators’ perceived professional identities and to explore how their experiences, across various contexts, have formed their professional identities. In-depth individual narrative interviews were used to provide a forum in which the participants could reflect upon and tell their professional life-story. This phase of the study also made use of the exploration of metaphors to further investigate the participants’ professional identity and, more particularly, their images of themselves as “teacher” and role model for students. A maximum variation, purposeful sampling approach was used to recruit eight pharmacy academics - one from each school or faculty of pharmacy in South Africa, as participants in this phase of the study. The second and third phases explored more widely, the insights gained from the first phase and the formation of professional identity, attitudes, beliefs and practices of pharmacy educators in South Africa. Two focus groups were employed during the second phase and the study sample was broadened to include a further ten pharmacy educators. In the third phase, a purpose-designed, qualitative questionnaire was used to extend the study sample to all pharmacy educators in South Africa. A convenience sampling approach was used in both the second and third phases of the study. Thematic analysis and interpretation of the narrative interview and focus group transcripts and the questionnaire responses were conducted using qualitative data analysis software – Atlas.ti®. A multiplicity of self-perceived professional identities was described. However, all of these were multi-faceted and could be situated on a continuum between pharmacist identity on one end and academic identity on the other. In addition, six key determinants were recognised as underpinning the participants’ self-perception of their professional identity. These included three structural determinants: expected role; knowledge base; and practice, and three determinants relating to the emotional dimensions and agency of professional identity: professional status; passions; and satisfiers. The professional identity of the participants had been formed through membership of multiple pharmacy-related communities of practice and continued to be sustained through a nexus of multi-membership. There was extensive support by the participants for the concept of pharmaceutical care; however, it did not impact extensively on their role as pharmacy educators. Furthermore, many expressed concern around the use of the term ‘pharmaceutical care’: its definition; its lack of penetration into, and implementation within the practice environment; and even its relevance to the South African healthcare context. Many of the participants perceived the professional development of future pharmacists to be integral to their role as educators, and was often their source of greatest professional satisfaction. However, concern was also expressed at the dissonance that students were perceived to experience, sometimes, because of the incongruities that they are taught and what they experience in practice. This study has afforded pharmacy educators in South Africa an opportunity to understand better “who” they are as professionals, and to reflect on their role as educators and as role models for future pharmacist. Moreover, the findings contribute to a collective understanding of the professional identity of pharmacy educators and socialisation of pharmacy students into the profession. The insights and recommendations emerging from the study have the potential to make academic pharmacy a more attractive career choice which may have positive implications for the future attraction and retention of pharmacists to academic posts within universities.
- Full Text:
- Date Issued: 2012
- Authors: Burton, Susan
- Date: 2012
- Subjects: Academic identity , Communities of practice , Identity (Philosophical concept) , Pharmacy -- Study and teaching , Pharmacy
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:10139 , http://hdl.handle.net/10948/d1008352 , Academic identity , Communities of practice , Identity (Philosophical concept) , Pharmacy -- Study and teaching , Pharmacy
- Description: The philosophy of pharmaceutical care, which defines a patient-centred approach to practice, has been embraced and upheld by national and international pharmaceutical organisations for two decades. However, pharmacists have been slow to change their practice and implement a pharmaceutical care approach. It has been suggested that amongst other factors, short-comings in pharmaceutical education have contributed to this reluctance of the profession to transform practice. Efforts to address these short-comings in pharmaceutical education have focused on the curriculum and pedagogic practices, and not on the pharmacy educators themselves. Palmer (1998) asserts that “good teaching cannot be reduced to technique; good teaching comes from the identity and integrity of the teacher”. In essence, "we teach who we are" and good teachers have one common trait: “a strong sense of personal identity that infuses their work”. This study identified, described and analysed the self-perceived professional identities of pharmacy educators within the South African context. This included ascertaining factors and contexts which contributed to participants’ self-perception of their professional identity. In an effort to understand the influence the educators have on practice and on changing practice and vice-versa, the attitudes, beliefs and behaviours of participants regarding the philosophy and practice of pharmaceutical care, and pharmaceutical education were also explored. Situated within a constructivist-interpretive, qualitative paradigm and making use of methodological triangulation, this study was conducted in three phases, each employing a different qualitative method to collect data. The first phase made use of narrative analysis to gain an in-depth understanding of pharmacy educators’ perceived professional identities and to explore how their experiences, across various contexts, have formed their professional identities. In-depth individual narrative interviews were used to provide a forum in which the participants could reflect upon and tell their professional life-story. This phase of the study also made use of the exploration of metaphors to further investigate the participants’ professional identity and, more particularly, their images of themselves as “teacher” and role model for students. A maximum variation, purposeful sampling approach was used to recruit eight pharmacy academics - one from each school or faculty of pharmacy in South Africa, as participants in this phase of the study. The second and third phases explored more widely, the insights gained from the first phase and the formation of professional identity, attitudes, beliefs and practices of pharmacy educators in South Africa. Two focus groups were employed during the second phase and the study sample was broadened to include a further ten pharmacy educators. In the third phase, a purpose-designed, qualitative questionnaire was used to extend the study sample to all pharmacy educators in South Africa. A convenience sampling approach was used in both the second and third phases of the study. Thematic analysis and interpretation of the narrative interview and focus group transcripts and the questionnaire responses were conducted using qualitative data analysis software – Atlas.ti®. A multiplicity of self-perceived professional identities was described. However, all of these were multi-faceted and could be situated on a continuum between pharmacist identity on one end and academic identity on the other. In addition, six key determinants were recognised as underpinning the participants’ self-perception of their professional identity. These included three structural determinants: expected role; knowledge base; and practice, and three determinants relating to the emotional dimensions and agency of professional identity: professional status; passions; and satisfiers. The professional identity of the participants had been formed through membership of multiple pharmacy-related communities of practice and continued to be sustained through a nexus of multi-membership. There was extensive support by the participants for the concept of pharmaceutical care; however, it did not impact extensively on their role as pharmacy educators. Furthermore, many expressed concern around the use of the term ‘pharmaceutical care’: its definition; its lack of penetration into, and implementation within the practice environment; and even its relevance to the South African healthcare context. Many of the participants perceived the professional development of future pharmacists to be integral to their role as educators, and was often their source of greatest professional satisfaction. However, concern was also expressed at the dissonance that students were perceived to experience, sometimes, because of the incongruities that they are taught and what they experience in practice. This study has afforded pharmacy educators in South Africa an opportunity to understand better “who” they are as professionals, and to reflect on their role as educators and as role models for future pharmacist. Moreover, the findings contribute to a collective understanding of the professional identity of pharmacy educators and socialisation of pharmacy students into the profession. The insights and recommendations emerging from the study have the potential to make academic pharmacy a more attractive career choice which may have positive implications for the future attraction and retention of pharmacists to academic posts within universities.
- Full Text:
- Date Issued: 2012
Motivation levels of tuberculosis healthcare staff at a district hospital in Kenya
- Authors: Busolo, Mellanda Isia
- Date: 2012
- Subjects: Health services administration , Employee motivation , Tuberculosis -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10135 , http://hdl.handle.net/10948/d1008292 , Health services administration , Employee motivation , Tuberculosis -- Prevention
- Description: Background: The success of tuberculosis (TB) treatment largely depends on healthcare team factors within a healthcare system, as healthcare workers play a vital role in fostering patient adherence to TB treatment. Strengthening motivation amongst Kenya’s TB healthcare workers should thus be reinforced in order to improve on clinical outcomes of TB treatment in Kenya. Objectives: To determine motivational needs of TB healthcare staff at a district hospital in Kenya and to provide recommendations on how to enhance their motivation. Design: TB healthcare workers including nurses, doctors, pharmacists and community healthcare workers were purposively sampled from a district hospital in Kenya. Their motivational levels were measured using a questionnaire adapted from Bennet and colleagues (2000). Key Findings: A high level of job satisfaction was present in more than 50 percent of the employees, although the ‘extrinsic job satisfaction’ sub-scale stood out as scoring relatively poorly in comparison to the other ‘job satisfaction’ sub-scales. Cognitive motivation yielded mixed results with 44 percent of respondents rating themselves as being satisfied, and 56 percent between neutral and very dissatisfied. The overall organisational commitment was positive, with the majority (60 percent) of respondents rating themselves as being committed to their organisation. The majority (96 percent) of workers rated their performance at work as very high. Conclusion: Improvement in staff motivation can be attributed to how well a hospital's management organises and runs its hospital. It was recommended that hospitals should provide an environment where motivational strategies are continuously implemented and where change is positively rewarded. This may, in turn, have a positive impact on TB treatment outcomes. The study may be of interest to key decision makers in Kenya’s healthcare system as well as TB programme managers, hospital managers and health managers in general. Further investigations are needed in order to determine whether Kenya’s public healthcare system has a staff retention strategy that is up to date with the motivational needs of Kenya’s health workforce.
- Full Text:
- Date Issued: 2012
- Authors: Busolo, Mellanda Isia
- Date: 2012
- Subjects: Health services administration , Employee motivation , Tuberculosis -- Prevention
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:10135 , http://hdl.handle.net/10948/d1008292 , Health services administration , Employee motivation , Tuberculosis -- Prevention
- Description: Background: The success of tuberculosis (TB) treatment largely depends on healthcare team factors within a healthcare system, as healthcare workers play a vital role in fostering patient adherence to TB treatment. Strengthening motivation amongst Kenya’s TB healthcare workers should thus be reinforced in order to improve on clinical outcomes of TB treatment in Kenya. Objectives: To determine motivational needs of TB healthcare staff at a district hospital in Kenya and to provide recommendations on how to enhance their motivation. Design: TB healthcare workers including nurses, doctors, pharmacists and community healthcare workers were purposively sampled from a district hospital in Kenya. Their motivational levels were measured using a questionnaire adapted from Bennet and colleagues (2000). Key Findings: A high level of job satisfaction was present in more than 50 percent of the employees, although the ‘extrinsic job satisfaction’ sub-scale stood out as scoring relatively poorly in comparison to the other ‘job satisfaction’ sub-scales. Cognitive motivation yielded mixed results with 44 percent of respondents rating themselves as being satisfied, and 56 percent between neutral and very dissatisfied. The overall organisational commitment was positive, with the majority (60 percent) of respondents rating themselves as being committed to their organisation. The majority (96 percent) of workers rated their performance at work as very high. Conclusion: Improvement in staff motivation can be attributed to how well a hospital's management organises and runs its hospital. It was recommended that hospitals should provide an environment where motivational strategies are continuously implemented and where change is positively rewarded. This may, in turn, have a positive impact on TB treatment outcomes. The study may be of interest to key decision makers in Kenya’s healthcare system as well as TB programme managers, hospital managers and health managers in general. Further investigations are needed in order to determine whether Kenya’s public healthcare system has a staff retention strategy that is up to date with the motivational needs of Kenya’s health workforce.
- Full Text:
- Date Issued: 2012
The jazz divas an analysis of the musical careers of six New Brighton vocalists
- Authors: Butete, Netsayi
- Date: 2012
- Subjects: Jazz musicians -- Research -- South Africa -- Port Elizabeth Ethnomusicology -- Research -- South Africa Sex discrimination against women -- South Africa Sex discrimination in employment -- South Africa Apartheid -- South Africa
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:2633 , http://hdl.handle.net/10962/d1002298
- Description: There has been insufficient academic research on the music of the Eastern Cape in general and Port Elizabeth and New Brighton in particular. This study, as part of the International Library of African Music (ILAM)lRed Location Museum Music History Project (ILAMIRLMHP) - an oral history intervention to save the music history of New Brighton from extinction through research and documentation of the memories of veteran musicians - is focused on jazz vocalists. The primary objective of my study is to investigate, critically analyze, interpret and document the career experiences of six New Brighton jazz vocalists in the context of performing in the Port Elizabeth music industry during the apartheid and the post-apartheid eras. The secondary objectives are to stimulate research interests in music students and ethnomusicologists to pursue research on the music of Port Elizabeth and the Eastern Cape and to inspire and motivate the vocalists to continue making music with renewed zeal. A qualitative research paradigm informed the field research necessary for this study. The fieldwork paved the way for an eclectic framework of analysis grounded in Pierre Bourdieu's notions of habitus, field and capital, examining the impact of the context on the vocalists' habitus which influenced how they viewed and interpreted their past and current experiences in the performance field. Data obtained through extensive interviewing of New Brighton's contemporary female vocalists and their male counterparts revealed that they have no opportunity to make commercial recordings. The musicians have to migrate to Johannesburg to have successful music careers, although personality politics, greed and lack of professionalism also work against the musicians' success. The data shows that New Brighton musicians, both male and female, do not have enough performance opportunities and there are fewer chances to tour now than there were from the 1960s through the 1980s. As in the apartheid era, female vocalists are still discriminated against in terms of pay, and men discriminate in how they pay other male musicians. Analysis of the vocalists' jazz compositions revealed that their song lyrics depict a bona fide urban African culture and reflect the emotional needs of the society in which they live.
- Full Text:
- Date Issued: 2012
- Authors: Butete, Netsayi
- Date: 2012
- Subjects: Jazz musicians -- Research -- South Africa -- Port Elizabeth Ethnomusicology -- Research -- South Africa Sex discrimination against women -- South Africa Sex discrimination in employment -- South Africa Apartheid -- South Africa
- Language: English
- Type: Thesis , Masters , MMus
- Identifier: vital:2633 , http://hdl.handle.net/10962/d1002298
- Description: There has been insufficient academic research on the music of the Eastern Cape in general and Port Elizabeth and New Brighton in particular. This study, as part of the International Library of African Music (ILAM)lRed Location Museum Music History Project (ILAMIRLMHP) - an oral history intervention to save the music history of New Brighton from extinction through research and documentation of the memories of veteran musicians - is focused on jazz vocalists. The primary objective of my study is to investigate, critically analyze, interpret and document the career experiences of six New Brighton jazz vocalists in the context of performing in the Port Elizabeth music industry during the apartheid and the post-apartheid eras. The secondary objectives are to stimulate research interests in music students and ethnomusicologists to pursue research on the music of Port Elizabeth and the Eastern Cape and to inspire and motivate the vocalists to continue making music with renewed zeal. A qualitative research paradigm informed the field research necessary for this study. The fieldwork paved the way for an eclectic framework of analysis grounded in Pierre Bourdieu's notions of habitus, field and capital, examining the impact of the context on the vocalists' habitus which influenced how they viewed and interpreted their past and current experiences in the performance field. Data obtained through extensive interviewing of New Brighton's contemporary female vocalists and their male counterparts revealed that they have no opportunity to make commercial recordings. The musicians have to migrate to Johannesburg to have successful music careers, although personality politics, greed and lack of professionalism also work against the musicians' success. The data shows that New Brighton musicians, both male and female, do not have enough performance opportunities and there are fewer chances to tour now than there were from the 1960s through the 1980s. As in the apartheid era, female vocalists are still discriminated against in terms of pay, and men discriminate in how they pay other male musicians. Analysis of the vocalists' jazz compositions revealed that their song lyrics depict a bona fide urban African culture and reflect the emotional needs of the society in which they live.
- Full Text:
- Date Issued: 2012
A model for automated topic spotting in a mobile chat based mathematics tutoring environment
- Authors: Butgereit, Laura Lee
- Date: 2012
- Subjects: Mobile communication systems in education , Mathematics -- Study and teaching , Tutors and tutoring -- Mathematics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9809 , http://hdl.handle.net/10948/d1013741
- Description: Systems of writing have existed for thousands of years. The history of civilisation and the history of writing are so intertwined that it is hard to separate the one from the other. These systems of writing, however, are not static. They change. One of the latest developments in systems of writing is short electronic messages such as seen on Twitter and in MXit. One novel application which uses these short electronic messages is the Dr Math® project. Dr Math is a mobile online tutoring system where pupils can use MXit on their cell phones and receive help with their mathematics homework from volunteer tutors around the world. These conversations between pupils and tutors are held in MXit lingo or MXit language – this cryptic, abbreviated system 0f ryting w1ch l0ks lyk dis. Project μ (pronounced mu and indicating MXit Understander) investigated how topics could be determined in MXit lingo and Project μ's research outputs spot mathematics topics in conversations between Dr Math tutors and pupils. Once the topics are determined, supporting documentation can be presented to the tutors to assist them in helping pupils with their mathematics homework. Project μ made the following contributions to new knowledge: a statistical and linguistic analysis of MXit lingo provides letter frequencies, word frequencies, message length statistics as well as linguistic bases for new spelling conventions seen in MXit based conversations; a post-stemmer for use with MXit lingo removes suffixes from the ends of words taking into account MXit spelling conventions allowing words such as equashun and equation to be reduced to the same root stem; a list of over ten thousand stop words for MXit lingo appropriate for the domain of mathematics; a misspelling corrector for MXit lingo which corrects words such as acount and equates it to account; and a model for spotting mathematical topics in MXit lingo. The model was instantiated and integrated into the Dr Math tutoring platform. Empirical evidence as to the effectiveness of the μ Topic Spotter and the other contributions is also presented. The empirical evidence includes specific statistical tests with MXit lingo, specific tests of the misspelling corrector, stemmer, and feedback mechanism, and an extensive exercise of content analysis with respect to mathematics topics.
- Full Text:
- Date Issued: 2012
- Authors: Butgereit, Laura Lee
- Date: 2012
- Subjects: Mobile communication systems in education , Mathematics -- Study and teaching , Tutors and tutoring -- Mathematics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:9809 , http://hdl.handle.net/10948/d1013741
- Description: Systems of writing have existed for thousands of years. The history of civilisation and the history of writing are so intertwined that it is hard to separate the one from the other. These systems of writing, however, are not static. They change. One of the latest developments in systems of writing is short electronic messages such as seen on Twitter and in MXit. One novel application which uses these short electronic messages is the Dr Math® project. Dr Math is a mobile online tutoring system where pupils can use MXit on their cell phones and receive help with their mathematics homework from volunteer tutors around the world. These conversations between pupils and tutors are held in MXit lingo or MXit language – this cryptic, abbreviated system 0f ryting w1ch l0ks lyk dis. Project μ (pronounced mu and indicating MXit Understander) investigated how topics could be determined in MXit lingo and Project μ's research outputs spot mathematics topics in conversations between Dr Math tutors and pupils. Once the topics are determined, supporting documentation can be presented to the tutors to assist them in helping pupils with their mathematics homework. Project μ made the following contributions to new knowledge: a statistical and linguistic analysis of MXit lingo provides letter frequencies, word frequencies, message length statistics as well as linguistic bases for new spelling conventions seen in MXit based conversations; a post-stemmer for use with MXit lingo removes suffixes from the ends of words taking into account MXit spelling conventions allowing words such as equashun and equation to be reduced to the same root stem; a list of over ten thousand stop words for MXit lingo appropriate for the domain of mathematics; a misspelling corrector for MXit lingo which corrects words such as acount and equates it to account; and a model for spotting mathematical topics in MXit lingo. The model was instantiated and integrated into the Dr Math tutoring platform. Empirical evidence as to the effectiveness of the μ Topic Spotter and the other contributions is also presented. The empirical evidence includes specific statistical tests with MXit lingo, specific tests of the misspelling corrector, stemmer, and feedback mechanism, and an extensive exercise of content analysis with respect to mathematics topics.
- Full Text:
- Date Issued: 2012
An enabling environment for women agri-entrepreneurs in the Tsitsikama area
- Authors: Buyambo, Ntombentsha
- Date: 2012
- Subjects: Agricultural administration -- South Africa , Agriculture -- Economic aspects -- South Africa , Women -- Agriculture
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8786 , http://hdl.handle.net/10948/d1013755
- Description: Agriculture plays an important role in the economy of every nation. Most countries depend on agriculture and other industries to survive. Economies around the world experience difficulties. There are many countries that have the potential to stimulate their economic growth through agriculture. The untapped resources have the potential of providing food, jobs and increased financial stability. Many countries utilise their agricultural sector to grow their economy. The growth of unemployment in South Africa has a big impact on our economy. This has caused an increase in poverty and unemployment (Ukpere & Slabbert, 2009). Women’s role in agriculture and food security is critical, but there is still lack of visibility regarding their participation and contribution in agriculture and development in general. This has led to two forms of agriculture in South Africa; so-called subsistence farming in the communal areas and white commercial farming (Kwa, 2001). Most emerging farmers are on communal land where they share decisions and ownership is unsecured, which discourages investment and limits productivity (Farmer's weekly, 2012). The main objective of the research was to determine if the women in the Tsitsikamma (Eastern Cape, South Africa), area have knowledge and strategies to manage their agribusiness in order to create an enabling environment and be competitive in their farming businesses. The qualitative method was used to answer questions in order to understand people’s perceptions, perspectives and understanding of particular situations. It is based on the belief that the researcher’s ability to interpret and make sense of what he or she sees is critical for an understanding of any social phenomenon. In seeking to create an enabling environment, a qualitative analysis investigated this particular situation. The sample consisted of 25 out of a possible 30 women in the agriculture industry. A structured questionnaire was used and interviews were conducted with women involved in agriculture regardless of owning a farm. This study was based in the farming industry, particular farm women who are interested or involved in agribusiness in the Tsitsikamma region. The results of the questionnaire revealed key findings, which enabled the researcher to draw meaningful conclusions and recommendations. The findings have suggested that the women farmers can overcome the identified constraints affecting the opportunities to grow their farming businesses. Further empirical results indicated that they do not have any strategies in running their farming businesses. The study also highlights areas in agribusiness that should be improved.
- Full Text:
- Date Issued: 2012
- Authors: Buyambo, Ntombentsha
- Date: 2012
- Subjects: Agricultural administration -- South Africa , Agriculture -- Economic aspects -- South Africa , Women -- Agriculture
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8786 , http://hdl.handle.net/10948/d1013755
- Description: Agriculture plays an important role in the economy of every nation. Most countries depend on agriculture and other industries to survive. Economies around the world experience difficulties. There are many countries that have the potential to stimulate their economic growth through agriculture. The untapped resources have the potential of providing food, jobs and increased financial stability. Many countries utilise their agricultural sector to grow their economy. The growth of unemployment in South Africa has a big impact on our economy. This has caused an increase in poverty and unemployment (Ukpere & Slabbert, 2009). Women’s role in agriculture and food security is critical, but there is still lack of visibility regarding their participation and contribution in agriculture and development in general. This has led to two forms of agriculture in South Africa; so-called subsistence farming in the communal areas and white commercial farming (Kwa, 2001). Most emerging farmers are on communal land where they share decisions and ownership is unsecured, which discourages investment and limits productivity (Farmer's weekly, 2012). The main objective of the research was to determine if the women in the Tsitsikamma (Eastern Cape, South Africa), area have knowledge and strategies to manage their agribusiness in order to create an enabling environment and be competitive in their farming businesses. The qualitative method was used to answer questions in order to understand people’s perceptions, perspectives and understanding of particular situations. It is based on the belief that the researcher’s ability to interpret and make sense of what he or she sees is critical for an understanding of any social phenomenon. In seeking to create an enabling environment, a qualitative analysis investigated this particular situation. The sample consisted of 25 out of a possible 30 women in the agriculture industry. A structured questionnaire was used and interviews were conducted with women involved in agriculture regardless of owning a farm. This study was based in the farming industry, particular farm women who are interested or involved in agribusiness in the Tsitsikamma region. The results of the questionnaire revealed key findings, which enabled the researcher to draw meaningful conclusions and recommendations. The findings have suggested that the women farmers can overcome the identified constraints affecting the opportunities to grow their farming businesses. Further empirical results indicated that they do not have any strategies in running their farming businesses. The study also highlights areas in agribusiness that should be improved.
- Full Text:
- Date Issued: 2012
Genetic algorithm for Artificial Neural Network training for the purpose of Automated Part Recognition
- Authors: Buys, Stefan
- Date: 2012
- Subjects: Genetic algorithms , Software architecture
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9648 , http://hdl.handle.net/10948/d1008356 , Genetic algorithms , Software architecture
- Description: Object or part recognition is of major interest in industrial environments. Current methods implement expensive camera based solutions. There is a need for a cost effective alternative to be developed. One of the proposed methods is to overcome the hardware, camera, problem by implementing a software solution. Artificial Neural Networks (ANN) are to be used as the underlying intelligent software as they have high tolerance for noise and have the ability to generalize. A colleague has implemented a basic ANN based system comprising of an ANN and three cost effective laser distance sensors. However, the system is only able to identify 3 different parts and needed hard coding changes made by trial and error. This is not practical for industrial use in a production environment where there are a large quantity of different parts to be identified that change relatively regularly. The ability to easily train more parts is required. Difficulties associated with traditional mathematically guided training methods are discussed, which leads to the development of a Genetic Algorithm (GA) based evolutionary training method that overcomes these difficulties and makes accurate part recognition possible. An ANN hybridised with GA training is introduced and a general solution encoding scheme which is used to encode the required ANN connection weights. Experimental tests were performed in order to determine the ideal GA performance and control parameters as studies have indicated that different GA control parameters can lead to large differences in training accuracy. After performing these tests, the training accuracy was analyzed by investigation into GA performance as well as hardware based part recognition performance. This analysis identified the ideal GA control parameters when training an ANN for the purpose of part recognition and showed that the ANN generally trained well and could generalize well on data not presented to it during training.
- Full Text:
- Date Issued: 2012
- Authors: Buys, Stefan
- Date: 2012
- Subjects: Genetic algorithms , Software architecture
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9648 , http://hdl.handle.net/10948/d1008356 , Genetic algorithms , Software architecture
- Description: Object or part recognition is of major interest in industrial environments. Current methods implement expensive camera based solutions. There is a need for a cost effective alternative to be developed. One of the proposed methods is to overcome the hardware, camera, problem by implementing a software solution. Artificial Neural Networks (ANN) are to be used as the underlying intelligent software as they have high tolerance for noise and have the ability to generalize. A colleague has implemented a basic ANN based system comprising of an ANN and three cost effective laser distance sensors. However, the system is only able to identify 3 different parts and needed hard coding changes made by trial and error. This is not practical for industrial use in a production environment where there are a large quantity of different parts to be identified that change relatively regularly. The ability to easily train more parts is required. Difficulties associated with traditional mathematically guided training methods are discussed, which leads to the development of a Genetic Algorithm (GA) based evolutionary training method that overcomes these difficulties and makes accurate part recognition possible. An ANN hybridised with GA training is introduced and a general solution encoding scheme which is used to encode the required ANN connection weights. Experimental tests were performed in order to determine the ideal GA performance and control parameters as studies have indicated that different GA control parameters can lead to large differences in training accuracy. After performing these tests, the training accuracy was analyzed by investigation into GA performance as well as hardware based part recognition performance. This analysis identified the ideal GA control parameters when training an ANN for the purpose of part recognition and showed that the ANN generally trained well and could generalize well on data not presented to it during training.
- Full Text:
- Date Issued: 2012
Barriers faced by SMMEs in accessing finance
- Authors: Caga, Siyabonga Macpherson
- Date: 2012
- Subjects: Small business -- Finance , Small business
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8784 , http://hdl.handle.net/10948/d1013348
- Description: SMMEs have been cited as major players in economic development in South Africa and in other developing countries. In South Africa SMMEs contribute more than 52 percent towards the GDP. Subsequently, the South African government has taken various steps to encourage their growth and to improve access to finance for SMMEs. Despite this, securing finance remains a challenge in this group of enterprises. Since SMMEs have unique financial needs, commercial banks and other funders are faced with difficulties in catering for them. Banks in particular have been reluctant in financing these high-risk ventures. SMME owners as a result still prefer informal sources of finance such as personal savings, retained earnings or friends or family rather than bank loans. The study purpose was to examine the barriers that are faced by SMMEs in accessing finance. To do this a survey was conducted on 40 SMMEs operating in the manufacturing sector in Tshwane Metropolitan Municipality. The research findings indicated various barriers that are faced by SMMEs in accessing finance. Dominating among the barriers are those that are related to perceived risks of SMMEs by funders, including lack of collateral or business assets, lack of financial statements, excessive red tape by funders, administrative burden associated with applications as well as unfair evaluation of risks and profitability of SMMEs by funders. Other factors that were identified as barriers were those that are associated with poor business plan development, poor business training and development and source of funding. The majority of the respondents recommended that there must be better risk and profitability evaluation, easy loan repayment methods, more government support for SMMEs, flexible eligibility criteria for SMME loans and proper loan amount allocations.
- Full Text:
- Date Issued: 2012
- Authors: Caga, Siyabonga Macpherson
- Date: 2012
- Subjects: Small business -- Finance , Small business
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:8784 , http://hdl.handle.net/10948/d1013348
- Description: SMMEs have been cited as major players in economic development in South Africa and in other developing countries. In South Africa SMMEs contribute more than 52 percent towards the GDP. Subsequently, the South African government has taken various steps to encourage their growth and to improve access to finance for SMMEs. Despite this, securing finance remains a challenge in this group of enterprises. Since SMMEs have unique financial needs, commercial banks and other funders are faced with difficulties in catering for them. Banks in particular have been reluctant in financing these high-risk ventures. SMME owners as a result still prefer informal sources of finance such as personal savings, retained earnings or friends or family rather than bank loans. The study purpose was to examine the barriers that are faced by SMMEs in accessing finance. To do this a survey was conducted on 40 SMMEs operating in the manufacturing sector in Tshwane Metropolitan Municipality. The research findings indicated various barriers that are faced by SMMEs in accessing finance. Dominating among the barriers are those that are related to perceived risks of SMMEs by funders, including lack of collateral or business assets, lack of financial statements, excessive red tape by funders, administrative burden associated with applications as well as unfair evaluation of risks and profitability of SMMEs by funders. Other factors that were identified as barriers were those that are associated with poor business plan development, poor business training and development and source of funding. The majority of the respondents recommended that there must be better risk and profitability evaluation, easy loan repayment methods, more government support for SMMEs, flexible eligibility criteria for SMME loans and proper loan amount allocations.
- Full Text:
- Date Issued: 2012
Educators' perceptions of conflict at three Northern area schools in Port Elizabeth: a case study
- Authors: Cain, Gerard Garth
- Date: 2012
- Subjects: Conflict of interests -- South Africa -- Port Elizabeth , Career development -- South Africa -- Port Elizabeth , Educators -- South Africa -- Port Elizabeth , Conflict management -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9563 , http://hdl.handle.net/10948/d1013756
- Description: The researcher, who is also an educator, a School Management Team member and a union official, observed that conflict among educators at schools was a cause of concern. This situation prompted the researcher to explore how school leaders and educators perceived conflict among educators at school in order to determine the perceived possible causes of conflict, the perceived possible consequences of conflict, how conflict was currently dealt with and the perceptions regarding appropriate measures to address the handling of conflict. The research was underpinned by the interpretive paradigm and followed a case study approach that involved three primary schools residing in close proximity to one another in the Northern Areas of Port Elizabeth, South Africa. Data was collected from educators and school leaders ranging from Post Level One educators to principals and covering educators from the Foundation Phase, Intermediate Phase and Senior Phase. Data was gathered by making use of an open-ended questionnaire, semi-structured personal interviews and semi-structured focus group interviews. The findings revealed that the research participants mostly viewed conflict negatively and associated it (conflict) with disagreements, misunderstandings, verbal and non-verbal fighting, and diverse views or opinions. The possible causes as identified by the participants were categorised into data-based conflict, relationship conflict, structural conflict, interest-based conflict and needs-based conflict. Data-based conflict related to issues concerned with communication, a lack of transparency and consultation, and the spreading of gossip and untruths. Relationship conflict pertained to favouritism, not valuing the opinions of others, and a lack of respect or tolerance. Structural conflict, as highlighted by the participants, were linked to issues of management and leadership, workload allocations and time tabling, punctuality and time issues and the role and responsibilities of employees. Value-based conflict was ascribed to different beliefs and viewpoints of people and differences in valuing guidance from others. Interest-based conflict was closely connected to appointments and limited possibilities around promotion posts as well as to issues with resources. Needs-based conflict focused on individuals‟ self-esteem needs and people‟s need for power and (or) status. Conflict was also perceived as having both positive and negative consequences. Positive aspects related to improved relationships, better understanding, change and improved attitudes and the development of personal growth. Negative aspects of conflict were associated with the manifestation of defiant attitudes and intolerance, poor cooperation, the formation of groups and cliques, poor morale and work ethic, poor health and stress, absenteeism and negative effects on teaching and the learners. Regarding the handling of conflict, the findings highlighted the perception that conflict is mostly avoided and (or) inadequately handled and when it was dealt with, it was done unprofessionally and inappropriately. The findings also pertained to suggestions in dealing with conflict in an appropriate manner. Here, the following important practical ways or aspects of handling conflict were suggested, namely ensuring that aggrieved parties were provided with opportunities to raise their issues, listening with serious intent, applying confidentiality and professionalism, openness and transparency, provision of fair hearings and treatment, the utilisation of policies and procedures, the value of conflict management training and the inclusion of external intervention in resolving conflict. Various outcomes were suggested by the findings. These were linked to striving towards a win-win situation, respect and understanding for all, compromise and agreement and satisfying all parties with agreements reached. The promotion of third party intervention was emphasised, with participants highlighting the characteristics that these third parties had to reflect and the procedures which they had to follow when attempting to resolve conflicts. Recommendations are also provided. In terms of these recommendations drafted, this study concludes that the recommendations can be grouped related to professional development opportunities and policies and procedures. Finally, in exploring educators‟ perceptions of conflict in three Northern Areas primary schools in Port Elizabeth, the researcher gained valuable insights into conflict among educators at schools, which could benefit educators (teachers, SMT‟s and principals) and education in general.
- Full Text:
- Date Issued: 2012
- Authors: Cain, Gerard Garth
- Date: 2012
- Subjects: Conflict of interests -- South Africa -- Port Elizabeth , Career development -- South Africa -- Port Elizabeth , Educators -- South Africa -- Port Elizabeth , Conflict management -- South Africa -- Port Elizabeth
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:9563 , http://hdl.handle.net/10948/d1013756
- Description: The researcher, who is also an educator, a School Management Team member and a union official, observed that conflict among educators at schools was a cause of concern. This situation prompted the researcher to explore how school leaders and educators perceived conflict among educators at school in order to determine the perceived possible causes of conflict, the perceived possible consequences of conflict, how conflict was currently dealt with and the perceptions regarding appropriate measures to address the handling of conflict. The research was underpinned by the interpretive paradigm and followed a case study approach that involved three primary schools residing in close proximity to one another in the Northern Areas of Port Elizabeth, South Africa. Data was collected from educators and school leaders ranging from Post Level One educators to principals and covering educators from the Foundation Phase, Intermediate Phase and Senior Phase. Data was gathered by making use of an open-ended questionnaire, semi-structured personal interviews and semi-structured focus group interviews. The findings revealed that the research participants mostly viewed conflict negatively and associated it (conflict) with disagreements, misunderstandings, verbal and non-verbal fighting, and diverse views or opinions. The possible causes as identified by the participants were categorised into data-based conflict, relationship conflict, structural conflict, interest-based conflict and needs-based conflict. Data-based conflict related to issues concerned with communication, a lack of transparency and consultation, and the spreading of gossip and untruths. Relationship conflict pertained to favouritism, not valuing the opinions of others, and a lack of respect or tolerance. Structural conflict, as highlighted by the participants, were linked to issues of management and leadership, workload allocations and time tabling, punctuality and time issues and the role and responsibilities of employees. Value-based conflict was ascribed to different beliefs and viewpoints of people and differences in valuing guidance from others. Interest-based conflict was closely connected to appointments and limited possibilities around promotion posts as well as to issues with resources. Needs-based conflict focused on individuals‟ self-esteem needs and people‟s need for power and (or) status. Conflict was also perceived as having both positive and negative consequences. Positive aspects related to improved relationships, better understanding, change and improved attitudes and the development of personal growth. Negative aspects of conflict were associated with the manifestation of defiant attitudes and intolerance, poor cooperation, the formation of groups and cliques, poor morale and work ethic, poor health and stress, absenteeism and negative effects on teaching and the learners. Regarding the handling of conflict, the findings highlighted the perception that conflict is mostly avoided and (or) inadequately handled and when it was dealt with, it was done unprofessionally and inappropriately. The findings also pertained to suggestions in dealing with conflict in an appropriate manner. Here, the following important practical ways or aspects of handling conflict were suggested, namely ensuring that aggrieved parties were provided with opportunities to raise their issues, listening with serious intent, applying confidentiality and professionalism, openness and transparency, provision of fair hearings and treatment, the utilisation of policies and procedures, the value of conflict management training and the inclusion of external intervention in resolving conflict. Various outcomes were suggested by the findings. These were linked to striving towards a win-win situation, respect and understanding for all, compromise and agreement and satisfying all parties with agreements reached. The promotion of third party intervention was emphasised, with participants highlighting the characteristics that these third parties had to reflect and the procedures which they had to follow when attempting to resolve conflicts. Recommendations are also provided. In terms of these recommendations drafted, this study concludes that the recommendations can be grouped related to professional development opportunities and policies and procedures. Finally, in exploring educators‟ perceptions of conflict in three Northern Areas primary schools in Port Elizabeth, the researcher gained valuable insights into conflict among educators at schools, which could benefit educators (teachers, SMT‟s and principals) and education in general.
- Full Text:
- Date Issued: 2012
The syntheses and photophysical properties of 4, 4′-isopropylidendioxydiphenyl substituted ball-type dinuclear Mg (II) and Zn (II) phthalocyanines
- Canlıca, Mevlüde, Nyokong, Tebello
- Authors: Canlıca, Mevlüde , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/243554 , vital:51163 , xlink:href="https://doi.org/10.1016/j.poly.2011.10.024"
- Description: The syntheses of ball-type dinuclear Zn(II) and Mg(II) phthalocyanines containing four 4,4′-isopropylidendioxydiphenyl substituents at the peripheral and non-peripheral positions are presented. The structures of the synthesized compounds were characterized using elemental analyses, and UV–Vis, FT-IR, 1H NMR and mass spectroscopies. The ΦF values were 0.14, 0.11, 0.22, 0.15 and ΦT values were 0.84, 0.88, 0.62, 0.74, for 6–9, respectively. The largest triplet yields were observed for the non-peripherally substituted complexes 6 and 7, showing that non-peripheral substitution favors increased population of the triplet state. All complexes showed reasonably long triplet lifetimes with τT 510, 310, 910 and 350 μs in DMSO, respectively.
- Full Text:
- Date Issued: 2012
- Authors: Canlıca, Mevlüde , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/243554 , vital:51163 , xlink:href="https://doi.org/10.1016/j.poly.2011.10.024"
- Description: The syntheses of ball-type dinuclear Zn(II) and Mg(II) phthalocyanines containing four 4,4′-isopropylidendioxydiphenyl substituents at the peripheral and non-peripheral positions are presented. The structures of the synthesized compounds were characterized using elemental analyses, and UV–Vis, FT-IR, 1H NMR and mass spectroscopies. The ΦF values were 0.14, 0.11, 0.22, 0.15 and ΦT values were 0.84, 0.88, 0.62, 0.74, for 6–9, respectively. The largest triplet yields were observed for the non-peripherally substituted complexes 6 and 7, showing that non-peripheral substitution favors increased population of the triplet state. All complexes showed reasonably long triplet lifetimes with τT 510, 310, 910 and 350 μs in DMSO, respectively.
- Full Text:
- Date Issued: 2012
Schottky barrier diode parameters of Ag/MgPc/p-Si structure
- Canlıca, Mevlüde, Coskun, Mustafa, Altındal, Ahmet, Nyokong, Tebello
- Authors: Canlıca, Mevlüde , Coskun, Mustafa , Altındal, Ahmet , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/245820 , vital:51408 , xlink:href="https://doi.org/10.1142/S1088424612500824"
- Description: An Ag/Pc/p-Si Schottky barrier (SB) diode was fabricated. The current-voltage (I-V), capacitance-voltage (C-V) and conductance-voltage (G-V) measurements were carried out to determine the characteristic parameters such as barrier height, ideality factor and series resistance of the SB diode. The non-linear behavior of ln (I) vs. ln (V) and ln (I/V) vs. V1/2 plots indicated that the thermoionic emission theory can be applied to evaluate junction parameters for the investigated SB diode rather than space-charge limited conduction (SCLC) mechanism and bulk-limited Poole–Frenkel emission. The bulk doping concentration NB and fixed oxide charges Nf was determined from the measured high frequency C-V curve and was found to be 9.5 × 1014 cm-3 and 2.3 × 1013 cm-2, respectively. The values of barrier height obtained from Norde's function were compared with those from the forward bias current-voltage characteristic, and it was seen that there was a good agreement between barrier heights from both methods.
- Full Text:
- Date Issued: 2012
- Authors: Canlıca, Mevlüde , Coskun, Mustafa , Altındal, Ahmet , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/245820 , vital:51408 , xlink:href="https://doi.org/10.1142/S1088424612500824"
- Description: An Ag/Pc/p-Si Schottky barrier (SB) diode was fabricated. The current-voltage (I-V), capacitance-voltage (C-V) and conductance-voltage (G-V) measurements were carried out to determine the characteristic parameters such as barrier height, ideality factor and series resistance of the SB diode. The non-linear behavior of ln (I) vs. ln (V) and ln (I/V) vs. V1/2 plots indicated that the thermoionic emission theory can be applied to evaluate junction parameters for the investigated SB diode rather than space-charge limited conduction (SCLC) mechanism and bulk-limited Poole–Frenkel emission. The bulk doping concentration NB and fixed oxide charges Nf was determined from the measured high frequency C-V curve and was found to be 9.5 × 1014 cm-3 and 2.3 × 1013 cm-2, respectively. The values of barrier height obtained from Norde's function were compared with those from the forward bias current-voltage characteristic, and it was seen that there was a good agreement between barrier heights from both methods.
- Full Text:
- Date Issued: 2012
The synthesis, photophysical and dielectric properties of ball-type dinuclear zinc phthalocyanine
- Canlıca, Mevlüde, Altındal, Ahmet, Nyokong, Tebello
- Authors: Canlıca, Mevlüde , Altındal, Ahmet , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/243532 , vital:51161 , xlink:href="https://doi.org/10.1142/S1088424612500836"
- Description: The synthesis of ball-type dinuclear Zn(II) phthalocyanine containing four 4,4′-(9H-fluorene-9,9-diyl)diphenol substituents at the non-peripheral position is presented. The structure of the synthesized compound was characterized using elemental analyzes, and UV-vis, FT-IR, 1H NMR and mass spectroscopies. The ΦF value was 0.16 and ΦT value was 0.72. The complex showed reasonably long triplet lifetimes with τT 7210 μs in DMSO. The frequency and temperature dependence of the dielectric properties of ZnPc were also investigated in the frequency range of 40–105 Hz and in the temperature range of 300–440 °K. It has been observed that both dielectric constant ε′ and dielectric loss ε″ decrease with the rise in frequency as they increase with the rise in temperature. The decrease in ε′ with increasing frequency is attributed to the fact that as the frequency increases, the polarizability contribution from orientation sources decreases and finally disappears.
- Full Text:
- Date Issued: 2012
- Authors: Canlıca, Mevlüde , Altındal, Ahmet , Nyokong, Tebello
- Date: 2012
- Subjects: To be catalogued
- Language: English
- Type: text , article
- Identifier: http://hdl.handle.net/10962/243532 , vital:51161 , xlink:href="https://doi.org/10.1142/S1088424612500836"
- Description: The synthesis of ball-type dinuclear Zn(II) phthalocyanine containing four 4,4′-(9H-fluorene-9,9-diyl)diphenol substituents at the non-peripheral position is presented. The structure of the synthesized compound was characterized using elemental analyzes, and UV-vis, FT-IR, 1H NMR and mass spectroscopies. The ΦF value was 0.16 and ΦT value was 0.72. The complex showed reasonably long triplet lifetimes with τT 7210 μs in DMSO. The frequency and temperature dependence of the dielectric properties of ZnPc were also investigated in the frequency range of 40–105 Hz and in the temperature range of 300–440 °K. It has been observed that both dielectric constant ε′ and dielectric loss ε″ decrease with the rise in frequency as they increase with the rise in temperature. The decrease in ε′ with increasing frequency is attributed to the fact that as the frequency increases, the polarizability contribution from orientation sources decreases and finally disappears.
- Full Text:
- Date Issued: 2012
The impact of clothing and protective gear on biophysical, physiological, perceptual and performance responses of rugby players during a simulated rugby protocol
- Authors: Cannon, Michael-John
- Date: 2012
- Subjects: Protective clothing -- Rugby football -- Health aspects -- Research , Rugby football injuries -- Prevention -- Research , Sports injuries -- Prevention -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5124 , http://hdl.handle.net/10962/d1005202 , Protective clothing -- Rugby football -- Health aspects -- Research , Rugby football injuries -- Prevention -- Research , Sports injuries -- Prevention -- Research
- Description: Background: Clothing and protective gear worn during intermittent exercise has shown to increase physiological and perceptual responses, and negatively impact performance capacities, due to increased heat strain, suggested to hasten the onset of fatigue. However, the mechanisms of fatigue experienced in rugby remain unclear. Objectives: The aim of this study was establish whether clothing and protective gear worn during a simulated rugby protocol impacts players‘ biophysical, physiological, perceptual and performance responses. Methods: 15 registered university and school first XV rugby players with a mean (± SD) age of 20.9 years (± 1.9) volunteered to participate in the study. Testing was performed in a controlled laboratory setting, with temperatures having to be within the range of 16º C-22º C. The mean (± SD) ambient temperature was 17.6º C (± 1.6) for the control condition and 17.3º C (1.5) for the experimental condition. The mean (± SD) relative humidity was 65.2 % (± 9.5) for the control condition and 66.3 % (± 10.0) for the experimental condition. Player‘s performed two protocols of 80-minutes; a control condition (minimal clothing and protective gear) and an experimental condition (full clothing and protective gear). Physiological, perceptual and performance responses were measured at set intervals during the protocol, while biophysical responses were measured pre-, at half-time and post-protocol during a 3-minute EMG treadmill protocol. Results: Muscle activity significantly (p< 0.05) increased with increasing running speeds. There were no significant (p> 0.05) differences for muscle activity between conditions, except for the semitendinosus muscle, which was significantly (p< 0.05) higher during the control condition while running at high speeds. Players‘ heart rates, core temperatures and perceptual responses were significantly (p< 0.05) higher during the experimental condition, compared to the control condition. Performance responses were significantly (p< 0.05) lower during the experimental condition. Conclusion: The main driver of physiological and perceptual responses was the exercise itself. However, the additional clothing and protective gear exacerbated the responses, particularly towards the end stages of the protocol. This negatively impacted players‘ performance. Muscle activity appeared to be unaffected by increased body temperatures. However, core temperatures never reached critically high levels during either condition.
- Full Text:
- Date Issued: 2012
- Authors: Cannon, Michael-John
- Date: 2012
- Subjects: Protective clothing -- Rugby football -- Health aspects -- Research , Rugby football injuries -- Prevention -- Research , Sports injuries -- Prevention -- Research
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5124 , http://hdl.handle.net/10962/d1005202 , Protective clothing -- Rugby football -- Health aspects -- Research , Rugby football injuries -- Prevention -- Research , Sports injuries -- Prevention -- Research
- Description: Background: Clothing and protective gear worn during intermittent exercise has shown to increase physiological and perceptual responses, and negatively impact performance capacities, due to increased heat strain, suggested to hasten the onset of fatigue. However, the mechanisms of fatigue experienced in rugby remain unclear. Objectives: The aim of this study was establish whether clothing and protective gear worn during a simulated rugby protocol impacts players‘ biophysical, physiological, perceptual and performance responses. Methods: 15 registered university and school first XV rugby players with a mean (± SD) age of 20.9 years (± 1.9) volunteered to participate in the study. Testing was performed in a controlled laboratory setting, with temperatures having to be within the range of 16º C-22º C. The mean (± SD) ambient temperature was 17.6º C (± 1.6) for the control condition and 17.3º C (1.5) for the experimental condition. The mean (± SD) relative humidity was 65.2 % (± 9.5) for the control condition and 66.3 % (± 10.0) for the experimental condition. Player‘s performed two protocols of 80-minutes; a control condition (minimal clothing and protective gear) and an experimental condition (full clothing and protective gear). Physiological, perceptual and performance responses were measured at set intervals during the protocol, while biophysical responses were measured pre-, at half-time and post-protocol during a 3-minute EMG treadmill protocol. Results: Muscle activity significantly (p< 0.05) increased with increasing running speeds. There were no significant (p> 0.05) differences for muscle activity between conditions, except for the semitendinosus muscle, which was significantly (p< 0.05) higher during the control condition while running at high speeds. Players‘ heart rates, core temperatures and perceptual responses were significantly (p< 0.05) higher during the experimental condition, compared to the control condition. Performance responses were significantly (p< 0.05) lower during the experimental condition. Conclusion: The main driver of physiological and perceptual responses was the exercise itself. However, the additional clothing and protective gear exacerbated the responses, particularly towards the end stages of the protocol. This negatively impacted players‘ performance. Muscle activity appeared to be unaffected by increased body temperatures. However, core temperatures never reached critically high levels during either condition.
- Full Text:
- Date Issued: 2012
Third crime unlucky
- Authors: Cartwright, Robert Oliver
- Date: 2012
- Subjects: South African fiction (English) -- 21st century , Creative writing (Higher education) , Creative writing -- Fiction
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5987 , http://hdl.handle.net/10962/d1015729
- Description: This is a contemporary mystery novel set in the Eastern Cape. A town’s airstrip, situated between the golf club and the military base, acts as host to the local flying club and an active skydiving school. An amateur investigator uses unorthodox methods and the help of friends to find the cause of aeroplane fires and sabotage. His investigations lead him via geological research and insurance reports into contact with members of the aviation, property development and military fields.
- Full Text:
- Date Issued: 2012
- Authors: Cartwright, Robert Oliver
- Date: 2012
- Subjects: South African fiction (English) -- 21st century , Creative writing (Higher education) , Creative writing -- Fiction
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:5987 , http://hdl.handle.net/10962/d1015729
- Description: This is a contemporary mystery novel set in the Eastern Cape. A town’s airstrip, situated between the golf club and the military base, acts as host to the local flying club and an active skydiving school. An amateur investigator uses unorthodox methods and the help of friends to find the cause of aeroplane fires and sabotage. His investigations lead him via geological research and insurance reports into contact with members of the aviation, property development and military fields.
- Full Text:
- Date Issued: 2012
Comparative biogeography and ecology of freshwater fishes in the Breede and associated river systems, South Africa
- Authors: Chakona, Albert
- Date: 2012
- Subjects: Freshwater fishes -- South Africa -- Breede River , Freshwater fishes -- South Africa -- Geographical distribution , Freshwater fishes -- Ecology , Feshwater fishes -- Genetics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5372 , http://hdl.handle.net/10962/d1015694
- Description: Distribution patterns and levels of genetic diversity in extant taxa are a product of complex palaeogeographic processes and climatic oscillations as well as the species’ intrinsic ecological adaptations. The Cape Floristic Region of South Africa presents a unique system for studying the processes that promote species diversification and distribution patterns. This region has a high degree of endemism of both terrestrial and aquatic biota and is clearly isolated from neighbouring areas by the Cape Fold Mountains and the Great Escarpment. The objective of this study was to firstly examine the ecology of freshwater fishes belonging to the genera Galaxias, Pseudobarbus and Sandelia in the south-western CFR. This was followed by an assessment of the genetic diversity of these taxa. Unique lineages were identified and their distribution was mapped. The work aimed to explore the role of the region’s complex palaeogeographic and climatic history as well as the role of the species’ ecological adaptations in driving lineage diversification and shaping contemporary distribution patterns. The four main components of the study can be summarised as follows: 1. Habitat associations of three widely distributed lineages of Galaxias zebratus Pseudobarbus burchelli and Sandelia capensis were evaluated at multiple localities in minimally disturbed mountain tributaries of the Breede, Duiwenhoks and Goukou River systems. The lineages have distinct habitat associations which were related to differences in their morphological traits. The slender-bodied Galaxias ‘nebula’ and the fusiform-shaped Pseudobarbus ‘Breede’ are capable of exploiting upper reaches with faster water velocity. By contrast, the laterally compressed Sandelia ‘eastern’ is restricted to lower reaches, making this lineage more susceptible to a wide array of impacts. 2. A recently discovered lineage of Galaxias zebratus, (Galaxias ‘nebula’), was found to be capable of tolerating emersion for a prolonged period of time. This is the first time that such capabilities have been documented in an African galaxiid. These adaptations have implications for the interpretation of Galaxias ‘nebula’s wide distribution range. 3. The phylogeography of Galaxias ‘nebula’ across its entire distribution range was investigated using two mitochondrial genes (cytochrome c oxidase subunit I (COI) and cytochrome b (cyt b)). This lineage has a complex evolutionary history that was influenced by both intrinsic and extrinsic factors. Rare events such as episodic drainage connections during Pleistocene and Holocene pluvial periods, possibly augmented by river confluences during periods of lower sea-levels and river capture events seem to be the most credible explanation for the extensive contemporary distribution and the relatively shallow genetic divergence between different river systems. 4. Mitochondrial cyt b sequences were used (i) to assess genetic diversity in G. zebratus, P. burchelli and S. capensis from the south-western CFR and (ii) to determine the roles of intrinsic ecological adaptations and extrinsic landscape and climatic changes in promoting genetic diversification and shaping present day distribution patterns of lineages in the three taxa. Marine incursions during periods of major sea-level transgressions are proposed to have isolated populations in upland refugia, thereby driving allopatric divergence in these species. Subsequent connections of rivers during wetter periods and lower sea-levels are proposed to have facilitated post-speciation dispersal of lineages to attain present day distribution patterns. While detailed morphological studies and further genetic analysis are needed to substantiate the taxonomic status of the newly discovered lineages of Galaxias zebratus, Pseudobarbus burchelli and Sandelia capensis, results of the present study indicate that the south-western CFR represents a previously unrecognised centre of freshwater fish diversity and microendemism in the broader Cape Floristic Region. Accurate identification of lineages and comprehensive mapping of their distribution is a fundamental pre-requisite for ecological studies, assessing conservation status and implementation of appropriate conservation measures.
- Full Text:
- Date Issued: 2012
- Authors: Chakona, Albert
- Date: 2012
- Subjects: Freshwater fishes -- South Africa -- Breede River , Freshwater fishes -- South Africa -- Geographical distribution , Freshwater fishes -- Ecology , Feshwater fishes -- Genetics
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: vital:5372 , http://hdl.handle.net/10962/d1015694
- Description: Distribution patterns and levels of genetic diversity in extant taxa are a product of complex palaeogeographic processes and climatic oscillations as well as the species’ intrinsic ecological adaptations. The Cape Floristic Region of South Africa presents a unique system for studying the processes that promote species diversification and distribution patterns. This region has a high degree of endemism of both terrestrial and aquatic biota and is clearly isolated from neighbouring areas by the Cape Fold Mountains and the Great Escarpment. The objective of this study was to firstly examine the ecology of freshwater fishes belonging to the genera Galaxias, Pseudobarbus and Sandelia in the south-western CFR. This was followed by an assessment of the genetic diversity of these taxa. Unique lineages were identified and their distribution was mapped. The work aimed to explore the role of the region’s complex palaeogeographic and climatic history as well as the role of the species’ ecological adaptations in driving lineage diversification and shaping contemporary distribution patterns. The four main components of the study can be summarised as follows: 1. Habitat associations of three widely distributed lineages of Galaxias zebratus Pseudobarbus burchelli and Sandelia capensis were evaluated at multiple localities in minimally disturbed mountain tributaries of the Breede, Duiwenhoks and Goukou River systems. The lineages have distinct habitat associations which were related to differences in their morphological traits. The slender-bodied Galaxias ‘nebula’ and the fusiform-shaped Pseudobarbus ‘Breede’ are capable of exploiting upper reaches with faster water velocity. By contrast, the laterally compressed Sandelia ‘eastern’ is restricted to lower reaches, making this lineage more susceptible to a wide array of impacts. 2. A recently discovered lineage of Galaxias zebratus, (Galaxias ‘nebula’), was found to be capable of tolerating emersion for a prolonged period of time. This is the first time that such capabilities have been documented in an African galaxiid. These adaptations have implications for the interpretation of Galaxias ‘nebula’s wide distribution range. 3. The phylogeography of Galaxias ‘nebula’ across its entire distribution range was investigated using two mitochondrial genes (cytochrome c oxidase subunit I (COI) and cytochrome b (cyt b)). This lineage has a complex evolutionary history that was influenced by both intrinsic and extrinsic factors. Rare events such as episodic drainage connections during Pleistocene and Holocene pluvial periods, possibly augmented by river confluences during periods of lower sea-levels and river capture events seem to be the most credible explanation for the extensive contemporary distribution and the relatively shallow genetic divergence between different river systems. 4. Mitochondrial cyt b sequences were used (i) to assess genetic diversity in G. zebratus, P. burchelli and S. capensis from the south-western CFR and (ii) to determine the roles of intrinsic ecological adaptations and extrinsic landscape and climatic changes in promoting genetic diversification and shaping present day distribution patterns of lineages in the three taxa. Marine incursions during periods of major sea-level transgressions are proposed to have isolated populations in upland refugia, thereby driving allopatric divergence in these species. Subsequent connections of rivers during wetter periods and lower sea-levels are proposed to have facilitated post-speciation dispersal of lineages to attain present day distribution patterns. While detailed morphological studies and further genetic analysis are needed to substantiate the taxonomic status of the newly discovered lineages of Galaxias zebratus, Pseudobarbus burchelli and Sandelia capensis, results of the present study indicate that the south-western CFR represents a previously unrecognised centre of freshwater fish diversity and microendemism in the broader Cape Floristic Region. Accurate identification of lineages and comprehensive mapping of their distribution is a fundamental pre-requisite for ecological studies, assessing conservation status and implementation of appropriate conservation measures.
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- Date Issued: 2012