Sexual behaviour of adolescent females: a case study of st. Wendolins area, kwaZulu Natal
- Authors: Phelako, Ntokozo
- Date: 2020
- Subjects: Teenagers -- Sexual behavior Youth -- Sexual behavior|
- Language: English
- Type: Thesis , Masters , M (Social Work)
- Identifier: http://hdl.handle.net/10353/11484 , vital:39076
- Description: This study investigated the phenomenon of sexual behaviour of adolescent females, specifically at St. Wendolins in the province of KwaZulu-Natal in South Africa. Adolescence is a critical period for physical, social, and emotional development, and the possibility of adolescents engaging in sexual intercourse is an important social and public health consideration. Sexual intercourse among adolescents is a risk factor for teen pregnancy, clandestine abortions, sexually transmitted infection, school dropouts, and HIV. Adolescents who engage in sexual intercourse may also be exposed to harmful lifestyles, such as use of illicit drugs, alcohol, and cigarette smoking. The South African national HIV public health interventions among adolescents have largely been geared towards sexual abstinence; this emphasis in the prevention interventions may be limited as it may not cater for adolescents with diverse experiences. The study intended to achieve the following specific objectives: to examine the challenges faced by sexual adolescent females; to assess the support services from the social network; and to examine the strategies that are put in place by professionals in supporting teenagers who are sexually active. The study was guided by a qualitative research design in the form of a case study. It also employed in-depth one-on-one interviews, complimented by both focus group discussions and key informants as methods of data collection. The study used nonprobability methodology of sample selection, specifically the purposive sampling technique as well as a snowball . A sample of the study comprised of the nonstudent participants, psychologist, teachers, social workers, Nurses, police officers and other community members Data was analysed qualitatively through content thematic data analysis, which used interpretative approaches and textual presentation. The study established the following: the adolescent stage is a critical time for young girls because of the physical, biological as well as the social changes that they face and need to go through. The factors that face young girls are from all aspects of life; from the home, the community as well as individual factors. The most important factor affecting adolescent females to emerge from the study was social media as a tool that young girls used to learn about sexual behaviour as well as communicating amongst themselves as well as with their sexual partners. 6 The study recommended that the family system needed strengthening. The home is the first place that young girls feel protected, and when the family system is broken down the adolescent females start to look outside and start misbehaving, and end up being sexually active. There should be continuous social work services provided to female adolescents as some are staying alone
- Full Text:
- Date Issued: 2020
- Authors: Phelako, Ntokozo
- Date: 2020
- Subjects: Teenagers -- Sexual behavior Youth -- Sexual behavior|
- Language: English
- Type: Thesis , Masters , M (Social Work)
- Identifier: http://hdl.handle.net/10353/11484 , vital:39076
- Description: This study investigated the phenomenon of sexual behaviour of adolescent females, specifically at St. Wendolins in the province of KwaZulu-Natal in South Africa. Adolescence is a critical period for physical, social, and emotional development, and the possibility of adolescents engaging in sexual intercourse is an important social and public health consideration. Sexual intercourse among adolescents is a risk factor for teen pregnancy, clandestine abortions, sexually transmitted infection, school dropouts, and HIV. Adolescents who engage in sexual intercourse may also be exposed to harmful lifestyles, such as use of illicit drugs, alcohol, and cigarette smoking. The South African national HIV public health interventions among adolescents have largely been geared towards sexual abstinence; this emphasis in the prevention interventions may be limited as it may not cater for adolescents with diverse experiences. The study intended to achieve the following specific objectives: to examine the challenges faced by sexual adolescent females; to assess the support services from the social network; and to examine the strategies that are put in place by professionals in supporting teenagers who are sexually active. The study was guided by a qualitative research design in the form of a case study. It also employed in-depth one-on-one interviews, complimented by both focus group discussions and key informants as methods of data collection. The study used nonprobability methodology of sample selection, specifically the purposive sampling technique as well as a snowball . A sample of the study comprised of the nonstudent participants, psychologist, teachers, social workers, Nurses, police officers and other community members Data was analysed qualitatively through content thematic data analysis, which used interpretative approaches and textual presentation. The study established the following: the adolescent stage is a critical time for young girls because of the physical, biological as well as the social changes that they face and need to go through. The factors that face young girls are from all aspects of life; from the home, the community as well as individual factors. The most important factor affecting adolescent females to emerge from the study was social media as a tool that young girls used to learn about sexual behaviour as well as communicating amongst themselves as well as with their sexual partners. 6 The study recommended that the family system needed strengthening. The home is the first place that young girls feel protected, and when the family system is broken down the adolescent females start to look outside and start misbehaving, and end up being sexually active. There should be continuous social work services provided to female adolescents as some are staying alone
- Full Text:
- Date Issued: 2020
The effect of muscle type and freezing on the evolution of physico-chemical properties during processing of South African biltong and its final textural properties
- Authors: Ngwendu, Nwabisa
- Date: 2020
- Subjects: Biltong Meat -- Quality -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/12128 , vital:39154
- Description: The study investigated the effect of muscle type and freezing on evaluation of mass transfer during processing physico-chemical of South African biltong and its textural properties. In the first experimental phase of this study, mass transfers, physico-chemical and textural properties (hardness, cohesiveness, springiness, and chewiness) of commercially produced biltong from biceps femoris (BF) and semitendinosus (ST) (n=9) were measured. Biltong was dried at 30oC and 40% relative humidity until it had lost 50% of its initial weight. The initial moisture content, water activity (Aw) of BF muscles (74.3% and 0.992) were significantly lower compared those of ST muscles (75.4% and 0.994%). The fat content of BF (2.3%) muscles was higher (P<0.05) than in ST muscles (1.7%). The salt, weight and water gain for the BF muscle were 2.3%, -2.6% and -7.0% respectively and were significantly higher than those of ST muscles which were 2.1, -0.4 and -4.0, respectively. After drying, the moisture content, Aw, and pH were lower in BF (42.2, 0.886 and 5.29) than those of ST muscles (45.1, 0.911 and 5.42). The salt content was higher (P<0.05) in BF muscle than in ST. Among textural properties, hardness was significantly higher in biltong from the BF (233.0N), while the springiness was significantly lower compared to the ST muscle (178.2N). Therefore, it was concluded that the use of different muscles results in variation of biltong physicochemical characteristics. The second experiment investigated the effect of freezing and muscle type on mass transfers, lipid oxidation, physico-chemical and textural properties of biltong. In this experiment, the iii ST muscles were replaced with semimembranosus (SM) muscles. A total of 12 beef muscles were used, with six BF and six SM muscles frozen in a blast freezer at -40 oC till they reached -20oC; then they were transferred to -20oC for 14 days. The thawing loss for the BF and ST muscles was 1.3 and 2.4% respectively, but there were no significant (P>0.05) differences. The protein and salt content were significantly higher in frozen-thawed (24.3 and 0.13%) muscles than in fresh muscle (20.2 and 0.08%); whereas the fat content and pH were lower (P<0.05) in frozen-thawed (5.36) compared to fresh muscles (5.51). Between muscles, the moisture, salt content, and pH were higher in BF muscles than in SM muscles (73.2, 0.12% and 5.49). Aw was affected by the interaction between freezing and muscle type, with frozenthawed SM having lower Aw (0.990). During salting, salt, weight and water gain did not show any differences (P<0.05). There were no major significant differences after salting. There were lower TBARS and pH in frozen-thawed (1.5mgMDA/kg and 5.15) muscles than in fresh muscles (3.3mgMDA/kg and 5.19) as well as in SM muscles (1.8mgMDA/kg and 5.16) than in BF muscles (3.0mgMDA/kg and 5.19). The moisture was significantly lower in frozen-thawed SM (68.1%) than in fresh SM, BF and frozen-thawed BF (69.3,70.5 and 71.7%) after salting. On the final product, the interaction between muscle type and freezing affected the moisture content, TBARS, chewiness and the springiness of biltong, with the biltong from fresh SM (39.8%) having significantly lower moisture content compared frozenthawed BF and ST muscles as well fresh BF muscles (42.8% in average). The TBARS were higher in biltong from fresh BF muscles (5.1mgMDA/kg) compared to other muscles. Furthermore, the chewiness and springiness were higher (P<0.05) in biltong produced from SM frozen-thawed muscles (327.7N and 1.5). The WBSF was higher in biltong from the BF muscles (108.8N) than in the biltong from SM (80.1) but it was not affected by the freezing effect (P>0.05). Freezing did not show any major differences in biltong. iv The third experiment was conducted to determine the effect of freezing African buffalo carcasses on weight loss during salting, physico-chemical and textural properties of biltong. Five muscles (ST, SM, BF, LTL, and RF) were randomly selected from 30 carcasses (15 frozen-thawed and 15 fresh), cut along the grain, traditionally salted and dried at 26oC till they lost 45-50% of their initial weight. The salting weight loss was higher in frozen-thawed muscles (-1.45%) than in fresh muscles (-0.89%). The freezing treatment affected the physico-chemical properties of the biltong. The biltong produced from frozen-thawed muscles showed significantly higher protein and ash (47.6 and 7.6%) compared to fresh (43.9 and 7.1); whereas the moisture, fat, pH and Aw were lower (43.7, 2.1, 0.870 and 5.30, respectively) compared to those of biltong from fresh muscles (45.5%, 2.9%, 0.890 and 5.38). The moisture, pH and fat content were further affected by muscle type. The interactive effect was observed in salt content, with RF frozen-thawed showing higher salt content (8.2%) compared to all other muscles. The hardness and WBSF were significantly higher (P<0.05) in biltong frozen-thawed (204.1N and 135.0N) than in fresh muscles (146.2N and 113.1N). Moreover, the chewiness and springiness were affected (P<0.05) by muscle type, with RF muscle having higher springiness 0.89 and chewiness 171.1N than all the other muscles. Therefore, it can be concluded that freezing buffalo carcasses significantly influenced the quality characteristics of biltong. The fourth experiment studied the effect of drying methods on physico-chemical properties of traditional biltong produced from African buffalo muscles. The BF and SM muscles were randomly selected from 15 fresh carcasses, cut into strips, salted and divided into two batches per muscle. The first batch of each muscle type was dried in the ambient-air drier at 22oC average and the second batch in the cabinet drier at 26 oC till 45-50% weight loss. No differences (P>0.05) were observed in salting weight loss between the drying method and muscle type. The protein content was significantly higher in SM (46%) muscles compared to v BF (43%) but there was no effect (P>0.05) caused by the drying method. The interactions between the muscle type and drying method affected the fat content, with biltong from airdried BF muscles having significant lower (2.1%) fat content. There were no significant differences in other physico-chemical properties of biltong, with moisture content, salt, ash content, Aw and pH being 45.0%, 5.13%, 44.8%, 7.3%, 2.7%, 0.885 and 5.61 on average, respectively. Overall, the findings of the study show that freezing does have a significant effect on the final quality of biltong. However, it can be concluded that a significant effect on the physico-chemical properties of biltong depends on the changes of mass transfers during salting and drying.
- Full Text:
- Date Issued: 2020
- Authors: Ngwendu, Nwabisa
- Date: 2020
- Subjects: Biltong Meat -- Quality -- South Africa
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/12128 , vital:39154
- Description: The study investigated the effect of muscle type and freezing on evaluation of mass transfer during processing physico-chemical of South African biltong and its textural properties. In the first experimental phase of this study, mass transfers, physico-chemical and textural properties (hardness, cohesiveness, springiness, and chewiness) of commercially produced biltong from biceps femoris (BF) and semitendinosus (ST) (n=9) were measured. Biltong was dried at 30oC and 40% relative humidity until it had lost 50% of its initial weight. The initial moisture content, water activity (Aw) of BF muscles (74.3% and 0.992) were significantly lower compared those of ST muscles (75.4% and 0.994%). The fat content of BF (2.3%) muscles was higher (P<0.05) than in ST muscles (1.7%). The salt, weight and water gain for the BF muscle were 2.3%, -2.6% and -7.0% respectively and were significantly higher than those of ST muscles which were 2.1, -0.4 and -4.0, respectively. After drying, the moisture content, Aw, and pH were lower in BF (42.2, 0.886 and 5.29) than those of ST muscles (45.1, 0.911 and 5.42). The salt content was higher (P<0.05) in BF muscle than in ST. Among textural properties, hardness was significantly higher in biltong from the BF (233.0N), while the springiness was significantly lower compared to the ST muscle (178.2N). Therefore, it was concluded that the use of different muscles results in variation of biltong physicochemical characteristics. The second experiment investigated the effect of freezing and muscle type on mass transfers, lipid oxidation, physico-chemical and textural properties of biltong. In this experiment, the iii ST muscles were replaced with semimembranosus (SM) muscles. A total of 12 beef muscles were used, with six BF and six SM muscles frozen in a blast freezer at -40 oC till they reached -20oC; then they were transferred to -20oC for 14 days. The thawing loss for the BF and ST muscles was 1.3 and 2.4% respectively, but there were no significant (P>0.05) differences. The protein and salt content were significantly higher in frozen-thawed (24.3 and 0.13%) muscles than in fresh muscle (20.2 and 0.08%); whereas the fat content and pH were lower (P<0.05) in frozen-thawed (5.36) compared to fresh muscles (5.51). Between muscles, the moisture, salt content, and pH were higher in BF muscles than in SM muscles (73.2, 0.12% and 5.49). Aw was affected by the interaction between freezing and muscle type, with frozenthawed SM having lower Aw (0.990). During salting, salt, weight and water gain did not show any differences (P<0.05). There were no major significant differences after salting. There were lower TBARS and pH in frozen-thawed (1.5mgMDA/kg and 5.15) muscles than in fresh muscles (3.3mgMDA/kg and 5.19) as well as in SM muscles (1.8mgMDA/kg and 5.16) than in BF muscles (3.0mgMDA/kg and 5.19). The moisture was significantly lower in frozen-thawed SM (68.1%) than in fresh SM, BF and frozen-thawed BF (69.3,70.5 and 71.7%) after salting. On the final product, the interaction between muscle type and freezing affected the moisture content, TBARS, chewiness and the springiness of biltong, with the biltong from fresh SM (39.8%) having significantly lower moisture content compared frozenthawed BF and ST muscles as well fresh BF muscles (42.8% in average). The TBARS were higher in biltong from fresh BF muscles (5.1mgMDA/kg) compared to other muscles. Furthermore, the chewiness and springiness were higher (P<0.05) in biltong produced from SM frozen-thawed muscles (327.7N and 1.5). The WBSF was higher in biltong from the BF muscles (108.8N) than in the biltong from SM (80.1) but it was not affected by the freezing effect (P>0.05). Freezing did not show any major differences in biltong. iv The third experiment was conducted to determine the effect of freezing African buffalo carcasses on weight loss during salting, physico-chemical and textural properties of biltong. Five muscles (ST, SM, BF, LTL, and RF) were randomly selected from 30 carcasses (15 frozen-thawed and 15 fresh), cut along the grain, traditionally salted and dried at 26oC till they lost 45-50% of their initial weight. The salting weight loss was higher in frozen-thawed muscles (-1.45%) than in fresh muscles (-0.89%). The freezing treatment affected the physico-chemical properties of the biltong. The biltong produced from frozen-thawed muscles showed significantly higher protein and ash (47.6 and 7.6%) compared to fresh (43.9 and 7.1); whereas the moisture, fat, pH and Aw were lower (43.7, 2.1, 0.870 and 5.30, respectively) compared to those of biltong from fresh muscles (45.5%, 2.9%, 0.890 and 5.38). The moisture, pH and fat content were further affected by muscle type. The interactive effect was observed in salt content, with RF frozen-thawed showing higher salt content (8.2%) compared to all other muscles. The hardness and WBSF were significantly higher (P<0.05) in biltong frozen-thawed (204.1N and 135.0N) than in fresh muscles (146.2N and 113.1N). Moreover, the chewiness and springiness were affected (P<0.05) by muscle type, with RF muscle having higher springiness 0.89 and chewiness 171.1N than all the other muscles. Therefore, it can be concluded that freezing buffalo carcasses significantly influenced the quality characteristics of biltong. The fourth experiment studied the effect of drying methods on physico-chemical properties of traditional biltong produced from African buffalo muscles. The BF and SM muscles were randomly selected from 15 fresh carcasses, cut into strips, salted and divided into two batches per muscle. The first batch of each muscle type was dried in the ambient-air drier at 22oC average and the second batch in the cabinet drier at 26 oC till 45-50% weight loss. No differences (P>0.05) were observed in salting weight loss between the drying method and muscle type. The protein content was significantly higher in SM (46%) muscles compared to v BF (43%) but there was no effect (P>0.05) caused by the drying method. The interactions between the muscle type and drying method affected the fat content, with biltong from airdried BF muscles having significant lower (2.1%) fat content. There were no significant differences in other physico-chemical properties of biltong, with moisture content, salt, ash content, Aw and pH being 45.0%, 5.13%, 44.8%, 7.3%, 2.7%, 0.885 and 5.61 on average, respectively. Overall, the findings of the study show that freezing does have a significant effect on the final quality of biltong. However, it can be concluded that a significant effect on the physico-chemical properties of biltong depends on the changes of mass transfers during salting and drying.
- Full Text:
- Date Issued: 2020
Psychosocial challenges faced by people living with hiv/aids at Victoria Hospital, Alice, Nkonkobe Municipality, Eastern Cape
- Authors: Sam, Ntombifikile
- Date: 2019
- Subjects: HIV infections
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/16210 , vital:40698
- Description: This study investigated the psychosocial challenges faced by people living with HIV/AIDS at Victoria Hospital, Alice, Nkonkobe municipality in the Eastern Cape. This study explored the views, attitudes and perceptions of people living with HIV/AIDS to understand the psychosocial challenges they underwent. The study aimed at achieving the following specific objectives: (i) To investigate the psychosocial challenges faced by people living with HIV and AIDS at the Victoria Hospital. (ii) To assess the impact of families and communities to people living with HIV/AIDS with respect to the lack of psychosocial support provided to people who are infected with HIV and AIDS at the Victoria Hospital in the Alice Area of the province of the Eastern Cape. (iii) To identify possible psychosocial support systems that could be provided by social service practitioners and by social networks for people living with HIV and AIDS and their families. The study used qualitative research approach where in-depth interviews and a focus group with key informants were used as methods of data collection. The study was premised on the systems theory to give a theoretical orientation into understanding the psychosocial challenges of people living with HIV/AIDS and possible support to be given to them. The sample size was made up of 10 patient participants; eight (8) ii females, two (2) males; and three (3) health practitioners. Non-probability sampling technique was used in the study. Specifically, purposive sampling was used to select the participants because the researcher believed that the participants had knowledge and experiences about HIV/AIDS. The data was analysed qualitatively through a content thematic analysis technique. The study found that there are many psychosocial challenges that are faced by people living with HIV/AIDS such as poverty, social support, rejection, depression and stigma and discrimination. The study recommends that the affected communities should have support groups for people living with HIV/AIDS to empower them and their families. The study also recommends the implementation of community engagements in the form of educating communities about HIV/AIDS and the importance of supporting people living with HIV/AIDS. More emphasis on the right to equality and the right for everyone to be treated with dignity and respect, as stated by Chapter 2 of the Bill of Rights of the South African constitution is highly recommended. Based on the evidence provided through the findings, the researcher is optimistic that all the challenges presented will be taken into consideration in future plans and policies.
- Full Text:
- Date Issued: 2019
- Authors: Sam, Ntombifikile
- Date: 2019
- Subjects: HIV infections
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/16210 , vital:40698
- Description: This study investigated the psychosocial challenges faced by people living with HIV/AIDS at Victoria Hospital, Alice, Nkonkobe municipality in the Eastern Cape. This study explored the views, attitudes and perceptions of people living with HIV/AIDS to understand the psychosocial challenges they underwent. The study aimed at achieving the following specific objectives: (i) To investigate the psychosocial challenges faced by people living with HIV and AIDS at the Victoria Hospital. (ii) To assess the impact of families and communities to people living with HIV/AIDS with respect to the lack of psychosocial support provided to people who are infected with HIV and AIDS at the Victoria Hospital in the Alice Area of the province of the Eastern Cape. (iii) To identify possible psychosocial support systems that could be provided by social service practitioners and by social networks for people living with HIV and AIDS and their families. The study used qualitative research approach where in-depth interviews and a focus group with key informants were used as methods of data collection. The study was premised on the systems theory to give a theoretical orientation into understanding the psychosocial challenges of people living with HIV/AIDS and possible support to be given to them. The sample size was made up of 10 patient participants; eight (8) ii females, two (2) males; and three (3) health practitioners. Non-probability sampling technique was used in the study. Specifically, purposive sampling was used to select the participants because the researcher believed that the participants had knowledge and experiences about HIV/AIDS. The data was analysed qualitatively through a content thematic analysis technique. The study found that there are many psychosocial challenges that are faced by people living with HIV/AIDS such as poverty, social support, rejection, depression and stigma and discrimination. The study recommends that the affected communities should have support groups for people living with HIV/AIDS to empower them and their families. The study also recommends the implementation of community engagements in the form of educating communities about HIV/AIDS and the importance of supporting people living with HIV/AIDS. More emphasis on the right to equality and the right for everyone to be treated with dignity and respect, as stated by Chapter 2 of the Bill of Rights of the South African constitution is highly recommended. Based on the evidence provided through the findings, the researcher is optimistic that all the challenges presented will be taken into consideration in future plans and policies.
- Full Text:
- Date Issued: 2019
The influence of briefing on Eastern Cape government project outcomes
- Authors: Binqela, Lukhanyo
- Date: 2019
- Subjects: Government projects -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44562 , vital:38128
- Description: South African Government projects are frequently completed with large cost overruns, extended schedules, quality concerns and an increase in emerging contractors making a significant loss in projects they undertake. The construction phase has been the focus of many studies on the causes of unfavourable project outcomes. However, the crucial stages in the construction process that influence the success of a project are the early ones. This is where major decisions that influence the features and form of a project occur. This study, which adopts a case study approach, aims to establish the influence of the brief development process on the outcome of Government projects in the Eastern Cape. Through the reviewed literature and primary data collection, the study aimed at establishing the influence of the brief that is utilised for a need analysis, to define a detailed scope of works, stakeholder engagement and the time management on Eastern Cape Government project outcomes. The Sarah Baartman district was the selected geographical scope of research. Five projects were selected; these included three schools, one emergency medical service facility and one office facility. The study revealed that Eastern Cape Government projects brief development is based on the client department 2013 Published Norms and Standards for state buildings and a need analysis for other stakeholders is not considered. The study further revealed that there is no stakeholder management in government projects; therefore, there is no stakeholder engagement plan during the brief development. The study further revealed that government time management is suboptimal because stakeholder needs are not realised. The research also found that Eastern Cape Government projects do not achieve stakeholder satisfaction and are delivered late. However, some Government projects are able to meet the desired quality and are within budget. The study thus proposes that the Eastern Cape Government projects need to adopt the dynamic brief development process and implement stakeholder management. The brief development process should be an ongoing process extending throughout the project life cycle responding in an innovative manner to emerging stakeholder requirements.
- Full Text:
- Date Issued: 2019
- Authors: Binqela, Lukhanyo
- Date: 2019
- Subjects: Government projects -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10948/44562 , vital:38128
- Description: South African Government projects are frequently completed with large cost overruns, extended schedules, quality concerns and an increase in emerging contractors making a significant loss in projects they undertake. The construction phase has been the focus of many studies on the causes of unfavourable project outcomes. However, the crucial stages in the construction process that influence the success of a project are the early ones. This is where major decisions that influence the features and form of a project occur. This study, which adopts a case study approach, aims to establish the influence of the brief development process on the outcome of Government projects in the Eastern Cape. Through the reviewed literature and primary data collection, the study aimed at establishing the influence of the brief that is utilised for a need analysis, to define a detailed scope of works, stakeholder engagement and the time management on Eastern Cape Government project outcomes. The Sarah Baartman district was the selected geographical scope of research. Five projects were selected; these included three schools, one emergency medical service facility and one office facility. The study revealed that Eastern Cape Government projects brief development is based on the client department 2013 Published Norms and Standards for state buildings and a need analysis for other stakeholders is not considered. The study further revealed that there is no stakeholder management in government projects; therefore, there is no stakeholder engagement plan during the brief development. The study further revealed that government time management is suboptimal because stakeholder needs are not realised. The research also found that Eastern Cape Government projects do not achieve stakeholder satisfaction and are delivered late. However, some Government projects are able to meet the desired quality and are within budget. The study thus proposes that the Eastern Cape Government projects need to adopt the dynamic brief development process and implement stakeholder management. The brief development process should be an ongoing process extending throughout the project life cycle responding in an innovative manner to emerging stakeholder requirements.
- Full Text:
- Date Issued: 2019
Experience of abuse: why wives do not leave
- Authors: Makhananda, Phakama
- Date: 2018
- Subjects: Abused wives -- South Africa , Family violence , Abused women -- South Africa
- Language: English
- Type: Thesis , Masters , Social Work
- Identifier: http://hdl.handle.net/10353/10625 , vital:35645
- Description: The focus of this study is to investigate factors that cause women to remain in abusive relationships. It has also focused on investigating the experience of abuse, the consequences of abuse and the support that women desire during their time of abuse. Domestic violence against women in South Africa and globally has been increasing by the day. In 2017 there has been more than ten reports of women who have been battered by their partners in South Africa and they were reported dead, therefore the aim is to focus on investigating the reasons why women stay in abusive relationships. The research approach for the study was qualitative in nature. The study adopted snowball sampling as the sampling technique for the study and ten women who have left their partners for two years or longer were interviewed. Interviews were conducted at Living Waters Victim Empowerment Centre in East London and the data was analysed using Interpretative Phenomenological Analysis. The key finding of the study is that financial dependency, culture and children play a major role for women to stay in abusive relationships. All ten participants who were interviewed were aware that they were being abused, however, they used unemployment, children, culture and love for their partners as their reasons for remaining in abusive relationships. The study found that women have been affected physically, emotionally and psychologically by the abuse which has negatively impacted their daily functioning. 4 This study also discovered that if women receive family support during their time of abuse, they will be able to make informed decisions and leave their abusive partners. One of the recommendations of the study is that women should be encouraged to expose the abuse they are enduring through campaigns and workshops. They should also be taught skills that will assist them to escape abusive partners. There is also a need for educational programs that will focus on men and the impact of domestic violence on women and children.
- Full Text:
- Date Issued: 2018
- Authors: Makhananda, Phakama
- Date: 2018
- Subjects: Abused wives -- South Africa , Family violence , Abused women -- South Africa
- Language: English
- Type: Thesis , Masters , Social Work
- Identifier: http://hdl.handle.net/10353/10625 , vital:35645
- Description: The focus of this study is to investigate factors that cause women to remain in abusive relationships. It has also focused on investigating the experience of abuse, the consequences of abuse and the support that women desire during their time of abuse. Domestic violence against women in South Africa and globally has been increasing by the day. In 2017 there has been more than ten reports of women who have been battered by their partners in South Africa and they were reported dead, therefore the aim is to focus on investigating the reasons why women stay in abusive relationships. The research approach for the study was qualitative in nature. The study adopted snowball sampling as the sampling technique for the study and ten women who have left their partners for two years or longer were interviewed. Interviews were conducted at Living Waters Victim Empowerment Centre in East London and the data was analysed using Interpretative Phenomenological Analysis. The key finding of the study is that financial dependency, culture and children play a major role for women to stay in abusive relationships. All ten participants who were interviewed were aware that they were being abused, however, they used unemployment, children, culture and love for their partners as their reasons for remaining in abusive relationships. The study found that women have been affected physically, emotionally and psychologically by the abuse which has negatively impacted their daily functioning. 4 This study also discovered that if women receive family support during their time of abuse, they will be able to make informed decisions and leave their abusive partners. One of the recommendations of the study is that women should be encouraged to expose the abuse they are enduring through campaigns and workshops. They should also be taught skills that will assist them to escape abusive partners. There is also a need for educational programs that will focus on men and the impact of domestic violence on women and children.
- Full Text:
- Date Issued: 2018
Synthesis of indium and lead phthalocyanine as photocatalysts for photodynamic antimicrobial chemotherapy and photo-oxidation of pollutants
- Authors: Osifeko, Olawale L
- Date: 2017
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/5221 , vital:20790
- Description: This thesis explores the synthesis of metallophthalocyanines as potential photosensitizers for application in photodynamic antimicrobial chemotherapy and phototransformation of environmental pollutants. The metallophthalocyanines containing amino substituent were conjugated with magnetic nanoparticle and semiconductor quantum dots via an amide bond and by chemisorption onto gold nanoparticles surface. Techniques such as time-resolved fluorescence measurements, transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), elemental analysis, fourier transform infrared (FTIR), nuclear magnetic resonance (¹H, ¹³C, and cozy of symmetrical phthalocyanine), electronic spectroscopy, as well as mass spectroscopy were employed to characterize all metallophthalocyanines. Quarternized pyridyloxy substituted phthalocyanine and asymmetric (AB3) metallophthalocyanines were embedded in electrospun polystyrene fiber. General trends are described for quantum yields of fluorescence, triplet, singlet oxygen and photodegradation as well as lifetimes of fluorescence and triplet state of the compounds. There is an increase in triplet quantum yield for Pcs in the presence of gold nanoparticles (AuNPs) and semiconductor quantum dots (QDs), but not in the presence of magnetic nanoparticles (MNPs). Photodynamic inactivation of Escherichia coli with the quarternized photosensitizers at low concentrations totally inactivate the bacteria compared to non-charged photosensitiser. Also, a similar trend was observed for the magnetic nanoparticles conjugates. Photooxidations of bisphenol A and 4-chlorophenol were carried out in this study using two asymmetric Indium(III) phthalocyanines photosensitizers. The photooxidation reactions were compared with those of a symmetrical indium(III) phthalocyanines containing four quaternized 4-pyridyloxy substituents. The complexes were embedded in electrospun polystyrene fiber for heterogeneous photocatalysis. The immobilized photosensitizers possess good singlet oxygen generation potentials in aqueous media. The asymmetrical phthalocyanine containing 4-pyridylsulfanyl and one aminophenoxy showed the best photocatalytic behavior.
- Full Text:
- Date Issued: 2017
- Authors: Osifeko, Olawale L
- Date: 2017
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10962/5221 , vital:20790
- Description: This thesis explores the synthesis of metallophthalocyanines as potential photosensitizers for application in photodynamic antimicrobial chemotherapy and phototransformation of environmental pollutants. The metallophthalocyanines containing amino substituent were conjugated with magnetic nanoparticle and semiconductor quantum dots via an amide bond and by chemisorption onto gold nanoparticles surface. Techniques such as time-resolved fluorescence measurements, transmission electron microscopy, X-ray photoelectron spectroscopy (XPS), elemental analysis, fourier transform infrared (FTIR), nuclear magnetic resonance (¹H, ¹³C, and cozy of symmetrical phthalocyanine), electronic spectroscopy, as well as mass spectroscopy were employed to characterize all metallophthalocyanines. Quarternized pyridyloxy substituted phthalocyanine and asymmetric (AB3) metallophthalocyanines were embedded in electrospun polystyrene fiber. General trends are described for quantum yields of fluorescence, triplet, singlet oxygen and photodegradation as well as lifetimes of fluorescence and triplet state of the compounds. There is an increase in triplet quantum yield for Pcs in the presence of gold nanoparticles (AuNPs) and semiconductor quantum dots (QDs), but not in the presence of magnetic nanoparticles (MNPs). Photodynamic inactivation of Escherichia coli with the quarternized photosensitizers at low concentrations totally inactivate the bacteria compared to non-charged photosensitiser. Also, a similar trend was observed for the magnetic nanoparticles conjugates. Photooxidations of bisphenol A and 4-chlorophenol were carried out in this study using two asymmetric Indium(III) phthalocyanines photosensitizers. The photooxidation reactions were compared with those of a symmetrical indium(III) phthalocyanines containing four quaternized 4-pyridyloxy substituents. The complexes were embedded in electrospun polystyrene fiber for heterogeneous photocatalysis. The immobilized photosensitizers possess good singlet oxygen generation potentials in aqueous media. The asymmetrical phthalocyanine containing 4-pyridylsulfanyl and one aminophenoxy showed the best photocatalytic behavior.
- Full Text:
- Date Issued: 2017
Estuarine species and habitat :distribution and connectivity
- Veldkornet, Dimitri Allastair
- Authors: Veldkornet, Dimitri Allastair
- Date: 2016
- Subjects: Estuarine ecology -- Research -- South Africa Estuarine fishes -- Speciation -- South Africa , Aquatic plants -- South Africa
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45388 , vital:38604
- Description: This study explored the distribution of estuarine macrophyte genetic lineages, species and habitats in relation to environmental gradients at various spatial scales. A database was assembled to determine the area and species composition of different estuarine habitats. This can now be used to retrieve information as a baseline for further monitoring and conservation planning. Research has shown that macrophytes occur over a wide range of physiochemical conditions, suggesting that these species have great genetic and phenotypic variation to occupy broad niche ranges. In eight estuaries along the South African coast, sediment and groundwater characteristics were measured in quadrants spanning the salt marsh, ecotone and terrestrial habitats. The results suggested that, in the absence of competition and disturbance at the salt marsh-terrestrial boundary, salt marshes would be unaffected by sea-level rise; and they would migrate landward. However, disturbance at the landward margin of salt marshes has already resulted in changes in species composition and altered environmental conditions. This promotes the encroachment of terrestrial alien invasive plants, leading to a loss of connectivity. A holistic assessment of land-cover changes showed that only 28% of South African estuaries still remain in a natural state. The delineation of all estuaries needs to be consistent and inclusive of all estuarine physical and biological processes, to curb future changes. The research results have been used in national assessments of estuarine health; and they have made a significant contribution to estuary-management plans. In addition, three scientific articles have been published from the thesis; and two more are currently under review.
- Full Text:
- Date Issued: 2016
- Authors: Veldkornet, Dimitri Allastair
- Date: 2016
- Subjects: Estuarine ecology -- Research -- South Africa Estuarine fishes -- Speciation -- South Africa , Aquatic plants -- South Africa
- Language: English
- Type: Thesis , Doctoral , PHD
- Identifier: http://hdl.handle.net/10948/45388 , vital:38604
- Description: This study explored the distribution of estuarine macrophyte genetic lineages, species and habitats in relation to environmental gradients at various spatial scales. A database was assembled to determine the area and species composition of different estuarine habitats. This can now be used to retrieve information as a baseline for further monitoring and conservation planning. Research has shown that macrophytes occur over a wide range of physiochemical conditions, suggesting that these species have great genetic and phenotypic variation to occupy broad niche ranges. In eight estuaries along the South African coast, sediment and groundwater characteristics were measured in quadrants spanning the salt marsh, ecotone and terrestrial habitats. The results suggested that, in the absence of competition and disturbance at the salt marsh-terrestrial boundary, salt marshes would be unaffected by sea-level rise; and they would migrate landward. However, disturbance at the landward margin of salt marshes has already resulted in changes in species composition and altered environmental conditions. This promotes the encroachment of terrestrial alien invasive plants, leading to a loss of connectivity. A holistic assessment of land-cover changes showed that only 28% of South African estuaries still remain in a natural state. The delineation of all estuaries needs to be consistent and inclusive of all estuarine physical and biological processes, to curb future changes. The research results have been used in national assessments of estuarine health; and they have made a significant contribution to estuary-management plans. In addition, three scientific articles have been published from the thesis; and two more are currently under review.
- Full Text:
- Date Issued: 2016
A comparison of open source and proprietary digital forensic software
- Authors: Sonnekus, Michael Hendrik
- Date: 2015
- Subjects: Computer crimes , Computer crimes -- Investigation , Electronic evidence , Open source software
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4717 , http://hdl.handle.net/10962/d1017939
- Description: Scrutiny of the capabilities and accuracy of computer forensic tools is increasing as the number of incidents relying on digital evidence and the weight of that evidence increase. This thesis describes the capabilities of the leading proprietary and open source digital forensic tools. The capabilities of the tools were tested separately on digital media that had been formatted using Windows and Linux. Experiments were carried out with the intention of establishing whether the capabilities of open source computer forensics are similar to those of proprietary computer forensic tools, and whether these tools could complement one another. The tools were tested with regards to their capabilities to make and analyse digital forensic images in a forensically sound manner. The tests were carried out on each media type after deleting data from the media, and then repeated after formatting the media. The results of the experiments performed demonstrate that both proprietary and open source computer forensic tools have superior capabilities in different scenarios, and that the toolsets can be used to validate and complement one another. The implication of these findings is that investigators have an affordable means of validating their findings and are able to more effectively investigate digital media.
- Full Text:
- Date Issued: 2015
- Authors: Sonnekus, Michael Hendrik
- Date: 2015
- Subjects: Computer crimes , Computer crimes -- Investigation , Electronic evidence , Open source software
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4717 , http://hdl.handle.net/10962/d1017939
- Description: Scrutiny of the capabilities and accuracy of computer forensic tools is increasing as the number of incidents relying on digital evidence and the weight of that evidence increase. This thesis describes the capabilities of the leading proprietary and open source digital forensic tools. The capabilities of the tools were tested separately on digital media that had been formatted using Windows and Linux. Experiments were carried out with the intention of establishing whether the capabilities of open source computer forensics are similar to those of proprietary computer forensic tools, and whether these tools could complement one another. The tools were tested with regards to their capabilities to make and analyse digital forensic images in a forensically sound manner. The tests were carried out on each media type after deleting data from the media, and then repeated after formatting the media. The results of the experiments performed demonstrate that both proprietary and open source computer forensic tools have superior capabilities in different scenarios, and that the toolsets can be used to validate and complement one another. The implication of these findings is that investigators have an affordable means of validating their findings and are able to more effectively investigate digital media.
- Full Text:
- Date Issued: 2015
Newspapers' institutional voices in Zimbabwe : speaking to power through editorials between 1 June and 31 December 2013
- Authors: Nyaungwa, Mathew
- Date: 2015
- Subjects: The Herald (Zimbabwe) , NewsDay (Zimbabwe) , Editorials -- Zimbabwe , Journalism -- Political aspects -- Zimbabwe , Journalistic ethics -- Zimbabwe , Journalism -- Objectivity -- Zimbabwe , Journalism -- Zimbabwe -- 21st century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3545 , http://hdl.handle.net/10962/d1017786
- Description: This study investigates the complex role editorials – a newspaper's institutional voice – play in highly-polarised political contexts. Employing Van Dijk's insight that editorials "are usually not only, and even not primarily, directed at the common reader: rather they tend to directly or indirectly address influential news actors" (1992: 244), the study focuses on how the editorials of two Zimbabwean daily newspapers – The Herald, a perceived pro-government newspaper, and NewsDay, a perceived pro-opposition newspaper – speak to those in power. The study looks at these two newspapers' editorials from 1 June to 31 December 2013, which covers the period prior to, during and after the 2013 national elections. The 31 July, 2013 elections took place after four years of an uneasy government of national unity (GNU), which comprised ZANU-PF and the two MDC formations (Raftopoulos, 2013:978). Given the polarisation that is pervasive in the Zimbabwean politics and media, the study draws on Hallin and Mancini (2004)'s "Polarised Pluralist Model". In this model the media are used as instruments of struggle in conflicts, sometimes by dictatorships and by movements struggling against them, but also by contending parties in periods of democratic politics (Hallin and Mancini, 2004:61). Further, the methodological approach that informs this study is primarily qualitative. A qualitative content analysis of 30 editorials seeks to identify themes covered in the editorials. The study also employs a rhetorical analysis of 12 editorials and in-depth interviews and these form the adopted three-stage research design. The findings of this research somewhat contradict the common view in Zimbabwe that the privately-owned media blindly support the opposition while the stateowned media do the same to ZANU-PF (Chari, 2009:10; Mabweazara, 2011:110). Although The Herald openly supported ZANU-PF prior to the election, it shifted after the election as it pushed the ruling party to fulfill pledges made on the campaign trail. Some ZANU-PF officials were also censured by The Herald, although this selective criticism can be linked to factionalism in the party. NewsDay editorials reminded the newly formed government to mend the economy and provide basic services. While, the daily constantly censured Mugabe and ZANU-PF prior to the election, it also occasionally berated the MDC, which can be attributed to its participation in the GNU as that took away the privilege it previously had of not being hold accountable by the press.
- Full Text:
- Date Issued: 2015
- Authors: Nyaungwa, Mathew
- Date: 2015
- Subjects: The Herald (Zimbabwe) , NewsDay (Zimbabwe) , Editorials -- Zimbabwe , Journalism -- Political aspects -- Zimbabwe , Journalistic ethics -- Zimbabwe , Journalism -- Objectivity -- Zimbabwe , Journalism -- Zimbabwe -- 21st century
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3545 , http://hdl.handle.net/10962/d1017786
- Description: This study investigates the complex role editorials – a newspaper's institutional voice – play in highly-polarised political contexts. Employing Van Dijk's insight that editorials "are usually not only, and even not primarily, directed at the common reader: rather they tend to directly or indirectly address influential news actors" (1992: 244), the study focuses on how the editorials of two Zimbabwean daily newspapers – The Herald, a perceived pro-government newspaper, and NewsDay, a perceived pro-opposition newspaper – speak to those in power. The study looks at these two newspapers' editorials from 1 June to 31 December 2013, which covers the period prior to, during and after the 2013 national elections. The 31 July, 2013 elections took place after four years of an uneasy government of national unity (GNU), which comprised ZANU-PF and the two MDC formations (Raftopoulos, 2013:978). Given the polarisation that is pervasive in the Zimbabwean politics and media, the study draws on Hallin and Mancini (2004)'s "Polarised Pluralist Model". In this model the media are used as instruments of struggle in conflicts, sometimes by dictatorships and by movements struggling against them, but also by contending parties in periods of democratic politics (Hallin and Mancini, 2004:61). Further, the methodological approach that informs this study is primarily qualitative. A qualitative content analysis of 30 editorials seeks to identify themes covered in the editorials. The study also employs a rhetorical analysis of 12 editorials and in-depth interviews and these form the adopted three-stage research design. The findings of this research somewhat contradict the common view in Zimbabwe that the privately-owned media blindly support the opposition while the stateowned media do the same to ZANU-PF (Chari, 2009:10; Mabweazara, 2011:110). Although The Herald openly supported ZANU-PF prior to the election, it shifted after the election as it pushed the ruling party to fulfill pledges made on the campaign trail. Some ZANU-PF officials were also censured by The Herald, although this selective criticism can be linked to factionalism in the party. NewsDay editorials reminded the newly formed government to mend the economy and provide basic services. While, the daily constantly censured Mugabe and ZANU-PF prior to the election, it also occasionally berated the MDC, which can be attributed to its participation in the GNU as that took away the privilege it previously had of not being hold accountable by the press.
- Full Text:
- Date Issued: 2015
A framework for implementation of ICT4D initiatives in the Eastern Cape province of South Africa
- Authors: Phingilili, Gcotyelwa
- Date: 2014
- Subjects: Information and Communication Technologies , ICT4D -- Development -- Rural community , Implementation -- ICT initiatives
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11146 , http://hdl.handle.net/10353/d1017789 , Information and Communication Technologies , ICT4D -- Development -- Rural community , Implementation -- ICT initiatives
- Description: South Africa’s rural communities have received Information and Communication Technologies services through initiatives such as tele-centres, living labs, Thusong service centres and donations of computer applications. There is need, with little plans in place to ensure that the rural communities will benefit from those initiatives. As a result of this, it is necessary to establish a framework for implementing Information and Communication Technologies for development initiatives in order to ensure successful implementation of these initiatives in rural communities. Literature shows that in order to successfully implement an ICT initiative for rural communities, there should be active engagement with ICT stakeholders, consultation of Information and Communication Technologies policies, presence of ICT infrastructure, ICT services, monitoring, evaluating, training and maintenance. Current literature on ICT developments shows that in order to successfully implement an ICT initiative for rural communities, there should be active engagement with ICT stakeholders, consultation of ICT policies, and presence of ICT infrastructure, ICT services, monitoring, evaluating, training and maintenance. Unstructured interviews were used as a research method to collect primary data that was used as a basis to develop the proposed framework. Findings from the studies carried out indicated that several ICT4D initiatives which were abandoned due to challenges such lack of proper resources, trainings, lack of local content, access, lack of ownership and lack of stakeholders’ involvement. This study presents a framework for implementing ICT for development initiatives in rural communities which has been developed in order to reduce the number of initiatives that are abandoned or which end up not serving their intended purpose in rural communities of South Africa.
- Full Text:
- Date Issued: 2014
- Authors: Phingilili, Gcotyelwa
- Date: 2014
- Subjects: Information and Communication Technologies , ICT4D -- Development -- Rural community , Implementation -- ICT initiatives
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: vital:11146 , http://hdl.handle.net/10353/d1017789 , Information and Communication Technologies , ICT4D -- Development -- Rural community , Implementation -- ICT initiatives
- Description: South Africa’s rural communities have received Information and Communication Technologies services through initiatives such as tele-centres, living labs, Thusong service centres and donations of computer applications. There is need, with little plans in place to ensure that the rural communities will benefit from those initiatives. As a result of this, it is necessary to establish a framework for implementing Information and Communication Technologies for development initiatives in order to ensure successful implementation of these initiatives in rural communities. Literature shows that in order to successfully implement an ICT initiative for rural communities, there should be active engagement with ICT stakeholders, consultation of Information and Communication Technologies policies, presence of ICT infrastructure, ICT services, monitoring, evaluating, training and maintenance. Current literature on ICT developments shows that in order to successfully implement an ICT initiative for rural communities, there should be active engagement with ICT stakeholders, consultation of ICT policies, and presence of ICT infrastructure, ICT services, monitoring, evaluating, training and maintenance. Unstructured interviews were used as a research method to collect primary data that was used as a basis to develop the proposed framework. Findings from the studies carried out indicated that several ICT4D initiatives which were abandoned due to challenges such lack of proper resources, trainings, lack of local content, access, lack of ownership and lack of stakeholders’ involvement. This study presents a framework for implementing ICT for development initiatives in rural communities which has been developed in order to reduce the number of initiatives that are abandoned or which end up not serving their intended purpose in rural communities of South Africa.
- Full Text:
- Date Issued: 2014
A review of archean orogenic gold deposits in greenstone belts and the Slave Province : exploration in the Yellowknife domain, NWT, Canada
- Authors: Branson, Thomas Keegan
- Date: 2014
- Subjects: Gold ores -- Northwest Territories -- Yellowknife , Gold ores -- Geology , Gold mines and mining -- Northwest Territories -- Yellowknife , Greenstone belts -- Northwest Territories -- Yellowknife , Orogenic belts -- Northwest Territories -- Yellowknife , Prospecting -- Northwest Territories -- Yellowknife , Mining geology , Slave Province (N.W.T. and Nunavut)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5055 , http://hdl.handle.net/10962/d1012142 , Gold ores -- Northwest Territories -- Yellowknife , Gold ores -- Geology , Gold mines and mining -- Northwest Territories -- Yellowknife , Greenstone belts -- Northwest Territories -- Yellowknife , Orogenic belts -- Northwest Territories -- Yellowknife , Prospecting -- Northwest Territories -- Yellowknife , Mining geology , Slave Province (N.W.T. and Nunavut)
- Description: A review of Archean granite-greenstone terranes, orogenic gold deposits, the Slave Province and modern exploration tools, techniques and methods was conducted to identify prospective areas in the Yellowknife domain for hosting orogenic gold deposits and illustrate the best exploration methods for delineating this deposit type. This study identifies Archean granite-greenstone terranes as economically important hosts to quartz-carbonate vein-hosted orogenic gold deposits. These deposits occur at convergent plate margins, but can also be related to local extensional tectonics within a convergent setting. Heat generated from tectonic processes can trigger hydrothermal fluid movement along first-order faults and shear zones. Precipitation of gold-bearing quartz-carbonate veins from the hydrothermal fluids occurs in second- and third-order faults and shear zones related to the first-order structures. This study also identifies the Archean Slave Province in northern Canada as a well-endowed craton with numerous orogenic gold deposits, diamondiferous kimberlites, VMS deposits and several other mineralization styles. In particular, three greenstone belts (Yellowknife, Cameron River and Beaulieu River) associated with likely first-order structures are comprised of prospective rocks for hosting orogenic gold and VMS mineralization. The Yellowknife greenstone belt hosts the past-producing and former world-class Con and Giant orogenic gold deposits, but has been little explored with modern exploration techniques. The Cameron River and Beaulieu River greenstone belts host numerous base and precious metal VMS and BIF-hosted orogenic gold prospects and deposits, indicating mineralization is present. There is considerable potential for significant discoveries to be made using modern exploration techniques in the greenstone belts; however, exploration in the region has been hindered over the past decade by ongoing political negotiations. Once the political negotiations are finalized, application of modern exploration methods and techniques in the prospective greenstone belts should be carried out. Regional scale methodologies should be applied to generate targets using predictive modelling, implicit 3D modelling, 3D geochemistry and exploration targeting so decisions defining a businesses strategy for ground acquisition of high priority targets are made using quantitative analysis. Once ground is acquired, field-based exploration for orogenic gold and VMS deposits should include geological mapping with a focus on structural geology, geochemical sampling and airborne magnetic, radiometric and EM geophysical surveys. Prior to reconnaissance drilling, integration of all data layers and interpretation within a common 3D earth model should be conducted. Following successful reconnaissance drilling, definition drilling along strike and down dip of intersected mineralization, combined with borehole geophysics, should be carried out to delineate the extent of mineralization.
- Full Text:
- Date Issued: 2014
- Authors: Branson, Thomas Keegan
- Date: 2014
- Subjects: Gold ores -- Northwest Territories -- Yellowknife , Gold ores -- Geology , Gold mines and mining -- Northwest Territories -- Yellowknife , Greenstone belts -- Northwest Territories -- Yellowknife , Orogenic belts -- Northwest Territories -- Yellowknife , Prospecting -- Northwest Territories -- Yellowknife , Mining geology , Slave Province (N.W.T. and Nunavut)
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5055 , http://hdl.handle.net/10962/d1012142 , Gold ores -- Northwest Territories -- Yellowknife , Gold ores -- Geology , Gold mines and mining -- Northwest Territories -- Yellowknife , Greenstone belts -- Northwest Territories -- Yellowknife , Orogenic belts -- Northwest Territories -- Yellowknife , Prospecting -- Northwest Territories -- Yellowknife , Mining geology , Slave Province (N.W.T. and Nunavut)
- Description: A review of Archean granite-greenstone terranes, orogenic gold deposits, the Slave Province and modern exploration tools, techniques and methods was conducted to identify prospective areas in the Yellowknife domain for hosting orogenic gold deposits and illustrate the best exploration methods for delineating this deposit type. This study identifies Archean granite-greenstone terranes as economically important hosts to quartz-carbonate vein-hosted orogenic gold deposits. These deposits occur at convergent plate margins, but can also be related to local extensional tectonics within a convergent setting. Heat generated from tectonic processes can trigger hydrothermal fluid movement along first-order faults and shear zones. Precipitation of gold-bearing quartz-carbonate veins from the hydrothermal fluids occurs in second- and third-order faults and shear zones related to the first-order structures. This study also identifies the Archean Slave Province in northern Canada as a well-endowed craton with numerous orogenic gold deposits, diamondiferous kimberlites, VMS deposits and several other mineralization styles. In particular, three greenstone belts (Yellowknife, Cameron River and Beaulieu River) associated with likely first-order structures are comprised of prospective rocks for hosting orogenic gold and VMS mineralization. The Yellowknife greenstone belt hosts the past-producing and former world-class Con and Giant orogenic gold deposits, but has been little explored with modern exploration techniques. The Cameron River and Beaulieu River greenstone belts host numerous base and precious metal VMS and BIF-hosted orogenic gold prospects and deposits, indicating mineralization is present. There is considerable potential for significant discoveries to be made using modern exploration techniques in the greenstone belts; however, exploration in the region has been hindered over the past decade by ongoing political negotiations. Once the political negotiations are finalized, application of modern exploration methods and techniques in the prospective greenstone belts should be carried out. Regional scale methodologies should be applied to generate targets using predictive modelling, implicit 3D modelling, 3D geochemistry and exploration targeting so decisions defining a businesses strategy for ground acquisition of high priority targets are made using quantitative analysis. Once ground is acquired, field-based exploration for orogenic gold and VMS deposits should include geological mapping with a focus on structural geology, geochemical sampling and airborne magnetic, radiometric and EM geophysical surveys. Prior to reconnaissance drilling, integration of all data layers and interpretation within a common 3D earth model should be conducted. Following successful reconnaissance drilling, definition drilling along strike and down dip of intersected mineralization, combined with borehole geophysics, should be carried out to delineate the extent of mineralization.
- Full Text:
- Date Issued: 2014
Guidelines to address the human factor in the South African National Research and Education Network beneficiary institutions
- Authors: Mjikeliso, Yolanda
- Date: 2014
- Subjects: National Research and Education Network (Computer network) Information networks -- South Africa Computer networks -- Security measures -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/9946 , vital:26635
- Description: Even if all the technical security solutions appropriate for an organisation’s network are implemented, for example, firewalls, antivirus programs and encryption, if the human factor is neglected then these technical security solutions will serve no purpose. The greatest challenge to network security is probably not the technological solutions that organisations invest in, but the human factor (non-technical solutions), which most organisations neglect. The human factor is often ignored even though humans are the most important resources of organisations and perform all the physical tasks, configure and manage equipment, enter data, manage people and operate the systems and networks. The same people that manage and operate networks and systems have vulnerabilities. They are not perfect and there will always be an element of mistake-making or error. In other words, humans make mistakes that could result in security vulnerabilities, and the exploitation of these vulnerabilities could in turn result in network security breaches. Human vulnerabilities are driven by many factors including insufficient security education, training and awareness, a lack of security policies and procedures in the organisation, a limited attention span and negligence. Network security may thus be compromised by this human vulnerability. In the context of this dissertation, both physical and technological controls should be implemented to ensure the security of the SANReN network. However, if the human factors are not adequately addressed, the network would become vulnerable to risks posed by the human factor which could threaten the security of the network. Accordingly, the primary research objective of this study is to formulate guidelines that address the information security related human factors in the rolling out and continued management of the SANReN network. An analysis of existing policies and procedures governing the SANReN network was conducted and it was determined that there are currently no guidelines addressing the human factor in the SANReN beneficiary institutions. Therefore, the aim of this study is to provide the guidelines for addressing the human factor threats in the SANReN beneficiary institutions.
- Full Text:
- Date Issued: 2014
- Authors: Mjikeliso, Yolanda
- Date: 2014
- Subjects: National Research and Education Network (Computer network) Information networks -- South Africa Computer networks -- Security measures -- South Africa
- Language: English
- Type: Thesis , Masters , MTech
- Identifier: http://hdl.handle.net/10948/9946 , vital:26635
- Description: Even if all the technical security solutions appropriate for an organisation’s network are implemented, for example, firewalls, antivirus programs and encryption, if the human factor is neglected then these technical security solutions will serve no purpose. The greatest challenge to network security is probably not the technological solutions that organisations invest in, but the human factor (non-technical solutions), which most organisations neglect. The human factor is often ignored even though humans are the most important resources of organisations and perform all the physical tasks, configure and manage equipment, enter data, manage people and operate the systems and networks. The same people that manage and operate networks and systems have vulnerabilities. They are not perfect and there will always be an element of mistake-making or error. In other words, humans make mistakes that could result in security vulnerabilities, and the exploitation of these vulnerabilities could in turn result in network security breaches. Human vulnerabilities are driven by many factors including insufficient security education, training and awareness, a lack of security policies and procedures in the organisation, a limited attention span and negligence. Network security may thus be compromised by this human vulnerability. In the context of this dissertation, both physical and technological controls should be implemented to ensure the security of the SANReN network. However, if the human factors are not adequately addressed, the network would become vulnerable to risks posed by the human factor which could threaten the security of the network. Accordingly, the primary research objective of this study is to formulate guidelines that address the information security related human factors in the rolling out and continued management of the SANReN network. An analysis of existing policies and procedures governing the SANReN network was conducted and it was determined that there are currently no guidelines addressing the human factor in the SANReN beneficiary institutions. Therefore, the aim of this study is to provide the guidelines for addressing the human factor threats in the SANReN beneficiary institutions.
- Full Text:
- Date Issued: 2014
Structural bioinformatics analysis of the Hsp40 and Hsp70 molecular chaperones from humans
- Authors: Adeyemi, Samson Adebowale
- Date: 2014
- Subjects: Structural bioinformatics , Molecular chaperones , Heat shock proteins , Protein-protein interactions , Biomolecules
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4171 , http://hdl.handle.net/10962/d1020962
- Description: HSP70 is one of the most important families of molecular chaperone that regulate the folding and transport of client proteins in an ATP dependent manner. The ATPase activity of HSP70 is stimulated through an interaction with its family of HSP40 co-chaperones. There is evidence to suggest that specific partnerships occur between the different HSP40 and HSP70 isoforms. While some of the residues involved in the interaction are known, many of the residues governing the specificity of HSP40-HSP70 partnerships are not precisely defined. It is not currently possible to predict which HSP40 and HSP70 isoforms will interact. We attempted to use bioinformatics to identify residues involved in the specificity of the interaction between the J domain from HSP40 and the ATPase domain from the HSP70 isoforms from humans. A total of 49 HSP40 and 13 HSP70 sequences from humans were retrieved and used for subsequent analyses. The HSP40 J domains and HSP70 ATPase domains were extracted using python scripts and classified according to the subcellular localization of the proteins using localization prediction programs. Motif analysis was carried out using the full length HSP40 proteins and Multiple Sequence Alignment (MSA) was performed to identify conserved residues that may contribute to the J domain – ATPase domain interactions. Phylogenetic inference of the proteins was also performed in order to study their evolutionary relationship. Homology models of the J domains and ATPase domains were generated. The corresponding models were docked using HADDOCK server in order to analyze possible putative interactions between the partner proteins using the Protein Interactions Calculator (PIC). The level of residue conservation was found to be higher in Type I and II HSP40 than in Type III J proteins. While highly conserved residues on helixes II and III could play critical roles in J domain interactions with corresponding HSP70s, conserved residues on helixes I and IV seemed to be significant in keeping the J domain in its right orientation for functional interactions with HSP70s. Our results also showed that helixes II and III formed the interaction interface for binding to HSP70 ATPase domain as well as the linker residues. Finally, data based docking procedures, such as applied in this study, could be an effective method to investigate protein-protein interactions complex of biomolecules.
- Full Text:
- Date Issued: 2014
- Authors: Adeyemi, Samson Adebowale
- Date: 2014
- Subjects: Structural bioinformatics , Molecular chaperones , Heat shock proteins , Protein-protein interactions , Biomolecules
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4171 , http://hdl.handle.net/10962/d1020962
- Description: HSP70 is one of the most important families of molecular chaperone that regulate the folding and transport of client proteins in an ATP dependent manner. The ATPase activity of HSP70 is stimulated through an interaction with its family of HSP40 co-chaperones. There is evidence to suggest that specific partnerships occur between the different HSP40 and HSP70 isoforms. While some of the residues involved in the interaction are known, many of the residues governing the specificity of HSP40-HSP70 partnerships are not precisely defined. It is not currently possible to predict which HSP40 and HSP70 isoforms will interact. We attempted to use bioinformatics to identify residues involved in the specificity of the interaction between the J domain from HSP40 and the ATPase domain from the HSP70 isoforms from humans. A total of 49 HSP40 and 13 HSP70 sequences from humans were retrieved and used for subsequent analyses. The HSP40 J domains and HSP70 ATPase domains were extracted using python scripts and classified according to the subcellular localization of the proteins using localization prediction programs. Motif analysis was carried out using the full length HSP40 proteins and Multiple Sequence Alignment (MSA) was performed to identify conserved residues that may contribute to the J domain – ATPase domain interactions. Phylogenetic inference of the proteins was also performed in order to study their evolutionary relationship. Homology models of the J domains and ATPase domains were generated. The corresponding models were docked using HADDOCK server in order to analyze possible putative interactions between the partner proteins using the Protein Interactions Calculator (PIC). The level of residue conservation was found to be higher in Type I and II HSP40 than in Type III J proteins. While highly conserved residues on helixes II and III could play critical roles in J domain interactions with corresponding HSP70s, conserved residues on helixes I and IV seemed to be significant in keeping the J domain in its right orientation for functional interactions with HSP70s. Our results also showed that helixes II and III formed the interaction interface for binding to HSP70 ATPase domain as well as the linker residues. Finally, data based docking procedures, such as applied in this study, could be an effective method to investigate protein-protein interactions complex of biomolecules.
- Full Text:
- Date Issued: 2014
Community radio and museum outreach: a case study of community radio practices to inform the environment and sustainability programmes of Livingstone Museum
- Authors: Muloongo, Arthanitius Henry
- Date: 2011
- Subjects: Community radio -- Zambia Livingstone Museum Museum outreach programs -- Zambia Environmental education -- Zambia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1454 , http://hdl.handle.net/10962/d1003335
- Description: This is a qualitative study whose purpose was to investigate the community radio education practices and the museum outreach education activities with a view to understanding how a museum-radio partnership may be used to engage the Livingstone community in environment and sustainability learning. Environment and sustainability issues require a community approach in order to bring about sustained responses to environmental challenges. As such, the study worked with social learning ideas of engaging the community in environment and sustainability learning. The data was generated mainly from face-to-face semi-structured interviews involving three community radio stations, Radio Listener Clubs and museum experts. The data generated was then presented to a strategy workshop involving the Livingstone Museum and Radio Musi-otunya staff. Arising from this workshop, recommendations were made about the possibility of the museum working in partnership with the radio to engage the community in environmental education. The study has shown that much of the museum environmental education activities have been confined to exhibitions and lectures within the museum building, which has affected the number of people being serviced by the museum. These education activities are arranged such that museum expert-led knowledge is presented to the audience with minimal community engagement on the environmental learning content. The study has also shown that community radio programming provides opportunities for community-led social learning which the Livingstone Museum could make use of to engage the community in environmental learning. Community radio programming allows community participation through Radio Listener Clubs, in identification and presentation of local environmental issues. This makes it a suitable tool to address locally relevant environmental issues, by the local community. Environmental issues are different from one place to another. Therefore environmental education approaches that bring issues into the museum may fail to address the different environmental education issues in different community context. The study concludes by recommending that Livingstone Museum should explore the use of community radio so that their expert knowledge and that of the radio producers could be used to shape environmental education programmes to go beyond awareness-raising.
- Full Text:
- Date Issued: 2011
- Authors: Muloongo, Arthanitius Henry
- Date: 2011
- Subjects: Community radio -- Zambia Livingstone Museum Museum outreach programs -- Zambia Environmental education -- Zambia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1454 , http://hdl.handle.net/10962/d1003335
- Description: This is a qualitative study whose purpose was to investigate the community radio education practices and the museum outreach education activities with a view to understanding how a museum-radio partnership may be used to engage the Livingstone community in environment and sustainability learning. Environment and sustainability issues require a community approach in order to bring about sustained responses to environmental challenges. As such, the study worked with social learning ideas of engaging the community in environment and sustainability learning. The data was generated mainly from face-to-face semi-structured interviews involving three community radio stations, Radio Listener Clubs and museum experts. The data generated was then presented to a strategy workshop involving the Livingstone Museum and Radio Musi-otunya staff. Arising from this workshop, recommendations were made about the possibility of the museum working in partnership with the radio to engage the community in environmental education. The study has shown that much of the museum environmental education activities have been confined to exhibitions and lectures within the museum building, which has affected the number of people being serviced by the museum. These education activities are arranged such that museum expert-led knowledge is presented to the audience with minimal community engagement on the environmental learning content. The study has also shown that community radio programming provides opportunities for community-led social learning which the Livingstone Museum could make use of to engage the community in environmental learning. Community radio programming allows community participation through Radio Listener Clubs, in identification and presentation of local environmental issues. This makes it a suitable tool to address locally relevant environmental issues, by the local community. Environmental issues are different from one place to another. Therefore environmental education approaches that bring issues into the museum may fail to address the different environmental education issues in different community context. The study concludes by recommending that Livingstone Museum should explore the use of community radio so that their expert knowledge and that of the radio producers could be used to shape environmental education programmes to go beyond awareness-raising.
- Full Text:
- Date Issued: 2011
Exploring perceptions and implementation experiences of learner-centered education among history teachers : a case study in Namibia
- Authors: Sibeya, Nestor Mutumba
- Date: 2011
- Subjects: Student-centered education -- Namibia , History -- Study and teaching (Secondary) -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1988 , http://hdl.handle.net/10962/d1013226
- Description: The study sought to understand how Grade 9 History teachers perceive and implement learner-centered education (LCE) in selected schools in Caprivi educational region in the Republic of Namibia. It concentrated on three teachers in two combined and junior secondary schools. The research employed a qualitative approach and three data instruments were used: interviews, class observations and document analysis. The findings of the study show that in their interview discussions of the principles, intent and recommended key features of LCE, the three participating teachers generally correctly captured some of the essential intentions of a LCE approach. At times in the interviews they seemed to strongly grasp the essence of a key strategy and its intent, but at other times their views were sketchy. Their view of different teaching strategies at times appeared integrated but not always that strongly. When it came to their classroom practice they could and did use a number of appropriate LCE teaching approaches. The level of effectiveness in their use of many of the approaches varied from effective to far from ideal and in need of quite big improvement. In the area of resources the three classrooms were extremely limited in what they displayed, had and used. There were too few textbooks and almost no posters and wall displays on history and the geography of the world and its peoples that the students were studying. An especially interesting feature was that they all seemed to be consciously engaged in an on-going teaching experiment with the LCE approaches. The LSC [sic] practices were clearly not yet strongly imbedded as solid classroom habits or dispositions, with perhaps the exception of questioning. But this experimenting made them much more self-conscious and reflective about their experiences. They all frankly identified some tensions that they felt existed between the espoused official features of a LCE class and the demands of the covering the curriculum, size of classes etc. Overall it was an encouraging picture of teachers eager to find ways to improve their teaching and experiment with new ideas. But also a picture of people not properly exposed to good or best practice in each teaching strategy and having to reinvent and rediscover on their own even the basics of reasonable practice often making very basic mistakes, for example in questioning.
- Full Text:
- Date Issued: 2011
- Authors: Sibeya, Nestor Mutumba
- Date: 2011
- Subjects: Student-centered education -- Namibia , History -- Study and teaching (Secondary) -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1988 , http://hdl.handle.net/10962/d1013226
- Description: The study sought to understand how Grade 9 History teachers perceive and implement learner-centered education (LCE) in selected schools in Caprivi educational region in the Republic of Namibia. It concentrated on three teachers in two combined and junior secondary schools. The research employed a qualitative approach and three data instruments were used: interviews, class observations and document analysis. The findings of the study show that in their interview discussions of the principles, intent and recommended key features of LCE, the three participating teachers generally correctly captured some of the essential intentions of a LCE approach. At times in the interviews they seemed to strongly grasp the essence of a key strategy and its intent, but at other times their views were sketchy. Their view of different teaching strategies at times appeared integrated but not always that strongly. When it came to their classroom practice they could and did use a number of appropriate LCE teaching approaches. The level of effectiveness in their use of many of the approaches varied from effective to far from ideal and in need of quite big improvement. In the area of resources the three classrooms were extremely limited in what they displayed, had and used. There were too few textbooks and almost no posters and wall displays on history and the geography of the world and its peoples that the students were studying. An especially interesting feature was that they all seemed to be consciously engaged in an on-going teaching experiment with the LCE approaches. The LSC [sic] practices were clearly not yet strongly imbedded as solid classroom habits or dispositions, with perhaps the exception of questioning. But this experimenting made them much more self-conscious and reflective about their experiences. They all frankly identified some tensions that they felt existed between the espoused official features of a LCE class and the demands of the covering the curriculum, size of classes etc. Overall it was an encouraging picture of teachers eager to find ways to improve their teaching and experiment with new ideas. But also a picture of people not properly exposed to good or best practice in each teaching strategy and having to reinvent and rediscover on their own even the basics of reasonable practice often making very basic mistakes, for example in questioning.
- Full Text:
- Date Issued: 2011
Language policy and practice at CM Vellem and PJ Olivier primary schools
- Authors: Fobe, Mila Pamella
- Date: 2010
- Subjects: C M Vellem School P J Olivier School Public schools -- South Africa -- Grahamstown Language policy -- South Africa Language and education -- South Africa -- Grahamstown Native language and education -- South Africa -- Grahamstown Afrikaans language -- Study and teaching (Primary) -- South Africa -- Grahamstown Xhosa language -- Study and teaching (Primary) -- South Africa -- Grahamstown English language -- Study and teaching (Primary) -- South Africa -- Grahamstown
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3586 , http://hdl.handle.net/10962/d1002161
- Description: This study looks at language policy and practice at two Eastern Cape schools. It further explores the link between language learning and teaching. Language implementation strategies were the main focus of this study. The Language-in-education policy of the Republic of South Africa (1997) promotes the use of all nine African languages, which have been afforded the status of official languages. This study looks at the language teaching practices at two Grahamstown primary schools, where isiXhosa and Afrikaans have been used as media of instruction. Qualitative methods were used, and the study took the form of interpretive case studies. , Thuto e, e ikaelela go tshegetsa patlisiso e e ka ga gore dipuo tsa Selegae tsa Seaforika mo Aforikaborwa di tshwanelwa ke go tsewa ka maemo le mokgwa o o lekanang go ya ka Molaotheo wa Aforikaborwa. Ka jalo, e tlaa utolola,e ribilole ditsela le go batla malepa a puso ya Aforikaborwa e ka fitlhelelang setšhaba se se kwa magaeng, se bokgoni jwa kitso ya Seesimane bo leng kwa tlase mo go bona. Bothata ke gore Aforikaborwa e laolwa bogolo ke tiriso e e kwa godimo ya Seesimane mme puso e tshwanelwa ke gore e tlose dikgoreletsi tse di leng teng ga jaana tsa puo. E bowe gape e thibele go se lekalekaneng ga botshelo ka kakaretso mo loagong go go tlholwang ke go sa lekalekaneng ga kitso ya dipuo mo setšhabeng ka kakaretso. Ditshwanelo mo puong fela jaaka ditshwanelo dingwe le dingwe tsa botho, di tshwanelwa ke go sireletswa, jaaka di akareditswe mo Molaotheo o mošwa wa temokerasi wa Aforikaborwa.
- Full Text:
- Date Issued: 2010
- Authors: Fobe, Mila Pamella
- Date: 2010
- Subjects: C M Vellem School P J Olivier School Public schools -- South Africa -- Grahamstown Language policy -- South Africa Language and education -- South Africa -- Grahamstown Native language and education -- South Africa -- Grahamstown Afrikaans language -- Study and teaching (Primary) -- South Africa -- Grahamstown Xhosa language -- Study and teaching (Primary) -- South Africa -- Grahamstown English language -- Study and teaching (Primary) -- South Africa -- Grahamstown
- Language: English
- Type: Thesis , Masters , MA
- Identifier: vital:3586 , http://hdl.handle.net/10962/d1002161
- Description: This study looks at language policy and practice at two Eastern Cape schools. It further explores the link between language learning and teaching. Language implementation strategies were the main focus of this study. The Language-in-education policy of the Republic of South Africa (1997) promotes the use of all nine African languages, which have been afforded the status of official languages. This study looks at the language teaching practices at two Grahamstown primary schools, where isiXhosa and Afrikaans have been used as media of instruction. Qualitative methods were used, and the study took the form of interpretive case studies. , Thuto e, e ikaelela go tshegetsa patlisiso e e ka ga gore dipuo tsa Selegae tsa Seaforika mo Aforikaborwa di tshwanelwa ke go tsewa ka maemo le mokgwa o o lekanang go ya ka Molaotheo wa Aforikaborwa. Ka jalo, e tlaa utolola,e ribilole ditsela le go batla malepa a puso ya Aforikaborwa e ka fitlhelelang setšhaba se se kwa magaeng, se bokgoni jwa kitso ya Seesimane bo leng kwa tlase mo go bona. Bothata ke gore Aforikaborwa e laolwa bogolo ke tiriso e e kwa godimo ya Seesimane mme puso e tshwanelwa ke gore e tlose dikgoreletsi tse di leng teng ga jaana tsa puo. E bowe gape e thibele go se lekalekaneng ga botshelo ka kakaretso mo loagong go go tlholwang ke go sa lekalekaneng ga kitso ya dipuo mo setšhabeng ka kakaretso. Ditshwanelo mo puong fela jaaka ditshwanelo dingwe le dingwe tsa botho, di tshwanelwa ke go sireletswa, jaaka di akareditswe mo Molaotheo o mošwa wa temokerasi wa Aforikaborwa.
- Full Text:
- Date Issued: 2010
A case study: exploring students' experiences of a participative assessment approach on a professionally-orientated postgraduate programme
- Authors: du Toit, Peter
- Date: 2009
- Subjects: Education, Higher -- South Africa Graduate students -- Study and teaching -- South Africa -- Case Studies Action research in education -- South Africa -- Case Studies Universities and colleges -- Graduate work -- South Africa -- Case Studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1432 , http://hdl.handle.net/10962/d1003313
- Description: The study was undertaken as the first cycle of an action research project. It presents a case study that explores the potential of the combined use of self-, peer-, and tutor-driven assessment in enhancing students’ learning in a professionally orientated postgraduate media management course. The study also explores how such a process can contribute to students developing the skills and dispositions required by autonomous learners and professionals. In approaching these questions the study draws directly on students’ own accounts of their experiences and contrasts these accounts with the growing body of literature on participative assessment in higher education that has emerged over the past decade. The study begins by exploring how action research can aid in the development of valuable insights into educational practice. It draws on educational theorists’ use of Habermas’s (1971, 1972 and 1974 in Grundy, 1987: 8) theory of knowledge constitutive interests in developing a conceptual framework against which assessment practice can be understood and argues against instrumental approaches to assessment. Set against a background of outcomes-based education, the study presents an argument for privileging the role of assessment in promoting learning above its other function. It contends that this function is undermined if students are excluded from direct involvement in assessment practice. Informed by research into participative assessment, the study presents a thick description of a particular approach used during the action research cycle and explores how students experienced this process. The findings of the study support theories favouring the involvement of students in their own assessment and suggest that such processes can contribute to meeting students’ present and future learning needs.
- Full Text:
- Date Issued: 2009
- Authors: du Toit, Peter
- Date: 2009
- Subjects: Education, Higher -- South Africa Graduate students -- Study and teaching -- South Africa -- Case Studies Action research in education -- South Africa -- Case Studies Universities and colleges -- Graduate work -- South Africa -- Case Studies
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1432 , http://hdl.handle.net/10962/d1003313
- Description: The study was undertaken as the first cycle of an action research project. It presents a case study that explores the potential of the combined use of self-, peer-, and tutor-driven assessment in enhancing students’ learning in a professionally orientated postgraduate media management course. The study also explores how such a process can contribute to students developing the skills and dispositions required by autonomous learners and professionals. In approaching these questions the study draws directly on students’ own accounts of their experiences and contrasts these accounts with the growing body of literature on participative assessment in higher education that has emerged over the past decade. The study begins by exploring how action research can aid in the development of valuable insights into educational practice. It draws on educational theorists’ use of Habermas’s (1971, 1972 and 1974 in Grundy, 1987: 8) theory of knowledge constitutive interests in developing a conceptual framework against which assessment practice can be understood and argues against instrumental approaches to assessment. Set against a background of outcomes-based education, the study presents an argument for privileging the role of assessment in promoting learning above its other function. It contends that this function is undermined if students are excluded from direct involvement in assessment practice. Informed by research into participative assessment, the study presents a thick description of a particular approach used during the action research cycle and explores how students experienced this process. The findings of the study support theories favouring the involvement of students in their own assessment and suggest that such processes can contribute to meeting students’ present and future learning needs.
- Full Text:
- Date Issued: 2009
An exploration of problems experienced in the interpretation of word problems by grade 12 learners
- Authors: Neshuku, Christian N
- Date: 2009
- Subjects: Education (Secondary) -- Namibia Word problems (Mathematics) Teachers -- Training of -- Namibia Curriculum planning -- Namibia Mathematics -- Study and teaching (Secondary)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1951 , http://hdl.handle.net/10962/d1008206
- Description: This research sought to investigate the problems experienced in the interpretation of word problems by senior secondary school learners, in particular to see how the language used in the articulation of word problems affects the interpretation. The study was conducted in a school in the Oshikoto region of Namibia, a school located in a semi-rural area of Namibia, and selected owing to the accessibility of the required participants. The research was located within an interpretive paradigm focusing on a study sample of 40 learners from a specified class in the selected school. Data were collected through written tests and a semi-structured interview based on written tests, and a comprehensive descriptive analysis of test results was prepared. The findings of the study indicate that the language in which the word problem was articulated did not make a difference. The performance in both English and Oshindonga tests was almost the same. The findings also indicate that vocabulary, syntactic interpretation, semantic relationships, algebraic skills, and practical sense making in relation to real-life are all important for the successful interpretation and solving of word problems. In view of these findings, the study has provided valuable insights into aspects of the teacher education curriculum that need to be revisited in order to improve the training of teachers In teaching word problems.
- Full Text:
- Date Issued: 2009
- Authors: Neshuku, Christian N
- Date: 2009
- Subjects: Education (Secondary) -- Namibia Word problems (Mathematics) Teachers -- Training of -- Namibia Curriculum planning -- Namibia Mathematics -- Study and teaching (Secondary)
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1951 , http://hdl.handle.net/10962/d1008206
- Description: This research sought to investigate the problems experienced in the interpretation of word problems by senior secondary school learners, in particular to see how the language used in the articulation of word problems affects the interpretation. The study was conducted in a school in the Oshikoto region of Namibia, a school located in a semi-rural area of Namibia, and selected owing to the accessibility of the required participants. The research was located within an interpretive paradigm focusing on a study sample of 40 learners from a specified class in the selected school. Data were collected through written tests and a semi-structured interview based on written tests, and a comprehensive descriptive analysis of test results was prepared. The findings of the study indicate that the language in which the word problem was articulated did not make a difference. The performance in both English and Oshindonga tests was almost the same. The findings also indicate that vocabulary, syntactic interpretation, semantic relationships, algebraic skills, and practical sense making in relation to real-life are all important for the successful interpretation and solving of word problems. In view of these findings, the study has provided valuable insights into aspects of the teacher education curriculum that need to be revisited in order to improve the training of teachers In teaching word problems.
- Full Text:
- Date Issued: 2009
A VLBI study of OH masers in a proto-planetary nebula OH 0.9+1.3
- Authors: McAlpine, Kim
- Date: 2008
- Subjects: Very long baseline interferometry , Proto-planetary nebulae , Masers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5499 , http://hdl.handle.net/10962/d1005285 , Very long baseline interferometry , Proto-planetary nebulae , Masers
- Description: This thesis reports the calibration, imaging and analysis of one epoch of VLBA observations of the 1612 MHz OH maser emission from the protoplanetary nebula OH 0.9+1.3. These are the first polarisation VLBI observations of this source and the spatial morphology of the OH emission is resolved on this scale. Proto-planetary nebulae represent the transition phase in the evolution of stars between the asymptotic giant branch (AGB) phase and their emergence as planetary nebulae. A long-standing astronomical question is how the predominantly spherical circumstellar envelopes of AGB stars evolve into the bipolar and axisymmetric structures that are commonly observed in planetary nebula. Proto-planetary nebulae offer a unique opportunity to study this transformation process. The high-resolution VLBI maps produced in this thesis were used to investigate the morphology and kinematics of OH 0.9+1.3 with a view to gaining insight into the development of asymmetries in the circumstellar material. The OH maser emission of OH 0.9+1.3 has a double-peaked profile with one peak blue-shifted and the other red-shifted with respect to the stellar velocity. The total intensity maser maps demonstrate a considerable degree of asymmetry with the blue- and red-shifted emission located in spatially distinct regions of the envelope. The blue-shifted emission is distributed preferentially along an axis at a projected position angle of » 135± ( North through East). The morphology of this source is not consistent with the standard symmetric thin-shell model and an attempt to fit the traditional OH/IR kinematic model of a simple expanding shell to the maser components was found to be unsatisfactory. No definitive evidence of a bipolar outflow was observed either. The high degree of asymmetry observed in the source is consistent with its status as a proto-planetary nebula. The source was imaged in all four Stokes parameters and the fractional linear and circular polarisations of the maser components were derived from the Stokes parameter maps. In all except one of the components the total fractional polarisation was found to be low ( < 15%). The mean fractional linear and circular polarisation were calculated to be 5.54% and 7.11% respectively. The absence of an identifiable Zeeman pair in the Stokes V map prohibited the estimation of the magnetic field in the circumstellar envelope of this source.
- Full Text:
- Date Issued: 2008
- Authors: McAlpine, Kim
- Date: 2008
- Subjects: Very long baseline interferometry , Proto-planetary nebulae , Masers
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5499 , http://hdl.handle.net/10962/d1005285 , Very long baseline interferometry , Proto-planetary nebulae , Masers
- Description: This thesis reports the calibration, imaging and analysis of one epoch of VLBA observations of the 1612 MHz OH maser emission from the protoplanetary nebula OH 0.9+1.3. These are the first polarisation VLBI observations of this source and the spatial morphology of the OH emission is resolved on this scale. Proto-planetary nebulae represent the transition phase in the evolution of stars between the asymptotic giant branch (AGB) phase and their emergence as planetary nebulae. A long-standing astronomical question is how the predominantly spherical circumstellar envelopes of AGB stars evolve into the bipolar and axisymmetric structures that are commonly observed in planetary nebula. Proto-planetary nebulae offer a unique opportunity to study this transformation process. The high-resolution VLBI maps produced in this thesis were used to investigate the morphology and kinematics of OH 0.9+1.3 with a view to gaining insight into the development of asymmetries in the circumstellar material. The OH maser emission of OH 0.9+1.3 has a double-peaked profile with one peak blue-shifted and the other red-shifted with respect to the stellar velocity. The total intensity maser maps demonstrate a considerable degree of asymmetry with the blue- and red-shifted emission located in spatially distinct regions of the envelope. The blue-shifted emission is distributed preferentially along an axis at a projected position angle of » 135± ( North through East). The morphology of this source is not consistent with the standard symmetric thin-shell model and an attempt to fit the traditional OH/IR kinematic model of a simple expanding shell to the maser components was found to be unsatisfactory. No definitive evidence of a bipolar outflow was observed either. The high degree of asymmetry observed in the source is consistent with its status as a proto-planetary nebula. The source was imaged in all four Stokes parameters and the fractional linear and circular polarisations of the maser components were derived from the Stokes parameter maps. In all except one of the components the total fractional polarisation was found to be low ( < 15%). The mean fractional linear and circular polarisation were calculated to be 5.54% and 7.11% respectively. The absence of an identifiable Zeeman pair in the Stokes V map prohibited the estimation of the magnetic field in the circumstellar envelope of this source.
- Full Text:
- Date Issued: 2008
Challenges faced by secondary school teachers in integrating ICT into the curriculum: a multiple case study in the Grahamstown Circuit
- Maholwana-Sotashe, Nikiwe Laura
- Authors: Maholwana-Sotashe, Nikiwe Laura
- Date: 2008
- Subjects: Educational technology -- South Africa -- Grahamstown Education, Secondary -- South Africa -- Grahamstown -- Data processing Information technology -- Study and teaching (Secondary) -- South Africa -- Grahamstown Internet in education -- South Africa -- Grahamstown Information technology -- South Africa -- Grahamstown Computer-assisted instruction -- South Africa -- Grahamstown Education, Secondary -- Curricula -- South Africa -- Grahamstown Educational innovations
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1445 , http://hdl.handle.net/10962/d1003326
- Description: The integration of Information and Communication Technology (ICT) into the curriculum has become the major issue worldwide. The education system does not only pursue the integration of ICT into the curriculum because of its popularity in the market system, but because of the role it is perceived to play in the changing curriculum (encourages active construction of knowledge). According to White Paper 7 e-Education policy (2004:17) every South African learner should be able to use ICTs confidently and creatively to develop the skills and knowledge they need to achieve personal goals and to be full participants in the global community by 2013. The central role played by teachers in teaching and learning requires them to have a holistic understanding of ICT integration. Furthermore they should be able to analyse when ICT integration is appropriate according to what is expected from the learner in the teaching and learning process. Drawing on the evidence from a survey of nine secondary schools in the Grahamstown Circuit of the Eastern Cape, this study examines how teachers from three different types of secondary schools: Former Department of Education (FDET) schools, Former House of Representatives (FHOR) schools and Former Model C (FMC) schools perceive the integration of ICTs in the curriculum. The salient ideas of how teachers perceive the integration of ICTs into the curriculum emerge from what they view as benefits of using ICT and what they view as challenges of integrating ICT into the curriculum. Contrary to expectations, the degree of ICT integration within the curriculum did not correspond directly with the availability of sufficient hardware, software or Internet connectivity at the participating schools.
- Full Text:
- Date Issued: 2008
- Authors: Maholwana-Sotashe, Nikiwe Laura
- Date: 2008
- Subjects: Educational technology -- South Africa -- Grahamstown Education, Secondary -- South Africa -- Grahamstown -- Data processing Information technology -- Study and teaching (Secondary) -- South Africa -- Grahamstown Internet in education -- South Africa -- Grahamstown Information technology -- South Africa -- Grahamstown Computer-assisted instruction -- South Africa -- Grahamstown Education, Secondary -- Curricula -- South Africa -- Grahamstown Educational innovations
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1445 , http://hdl.handle.net/10962/d1003326
- Description: The integration of Information and Communication Technology (ICT) into the curriculum has become the major issue worldwide. The education system does not only pursue the integration of ICT into the curriculum because of its popularity in the market system, but because of the role it is perceived to play in the changing curriculum (encourages active construction of knowledge). According to White Paper 7 e-Education policy (2004:17) every South African learner should be able to use ICTs confidently and creatively to develop the skills and knowledge they need to achieve personal goals and to be full participants in the global community by 2013. The central role played by teachers in teaching and learning requires them to have a holistic understanding of ICT integration. Furthermore they should be able to analyse when ICT integration is appropriate according to what is expected from the learner in the teaching and learning process. Drawing on the evidence from a survey of nine secondary schools in the Grahamstown Circuit of the Eastern Cape, this study examines how teachers from three different types of secondary schools: Former Department of Education (FDET) schools, Former House of Representatives (FHOR) schools and Former Model C (FMC) schools perceive the integration of ICTs in the curriculum. The salient ideas of how teachers perceive the integration of ICTs into the curriculum emerge from what they view as benefits of using ICT and what they view as challenges of integrating ICT into the curriculum. Contrary to expectations, the degree of ICT integration within the curriculum did not correspond directly with the availability of sufficient hardware, software or Internet connectivity at the participating schools.
- Full Text:
- Date Issued: 2008