Parents’ perspectives and experiences regarding the impact of adolescents’ use of social media on the parent-adolescent relationship
- Authors: Poswa, Prudence
- Date: 2019
- Subjects: Mass media and children , Parent and teenager -- Psychological aspects Parenthood -- Psychological aspects Adolescent psychotherapy Communication in families
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/43290 , vital:36782
- Description: Parent-adolescent relationships are perceived to be an essential part of human relationships. They affect areas of social development and relationship formation in the adolescent’s current and future life. With today’s rapidly changing and technologically advancing world, adolescents as well as parents, increasingly spend a large amount of time engaging on social media. This may have an influence on the parent-adolescent relationship. The purpose of this study was to gain an understanding of the impact of social media on the parent-adolescent relationship as experienced by parents. A qualitative research approach was used with a descriptive, explorative and contextual research design. Data was collected through the use of individual, semi-structured interviews. This data was analysed by following the guidelines provided by Tesch and Guba’s model was used to ensure the trustworthiness of the study. This study has sought to expand the knowledge base regarding the perceived impact of social media on the parent-child relationship and to offer recommendations regarding how the effective use of social media can enhance the relationship between parent and child.
- Full Text:
- Date Issued: 2019
- Authors: Poswa, Prudence
- Date: 2019
- Subjects: Mass media and children , Parent and teenager -- Psychological aspects Parenthood -- Psychological aspects Adolescent psychotherapy Communication in families
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/43290 , vital:36782
- Description: Parent-adolescent relationships are perceived to be an essential part of human relationships. They affect areas of social development and relationship formation in the adolescent’s current and future life. With today’s rapidly changing and technologically advancing world, adolescents as well as parents, increasingly spend a large amount of time engaging on social media. This may have an influence on the parent-adolescent relationship. The purpose of this study was to gain an understanding of the impact of social media on the parent-adolescent relationship as experienced by parents. A qualitative research approach was used with a descriptive, explorative and contextual research design. Data was collected through the use of individual, semi-structured interviews. This data was analysed by following the guidelines provided by Tesch and Guba’s model was used to ensure the trustworthiness of the study. This study has sought to expand the knowledge base regarding the perceived impact of social media on the parent-child relationship and to offer recommendations regarding how the effective use of social media can enhance the relationship between parent and child.
- Full Text:
- Date Issued: 2019
Exploring the leadership capacity development needs of middle management within a selected higher education institution
- Authors: Moodley, Kumaree
- Date: 2014
- Subjects: LCSHDevelopment leadership Educational leadership
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11309 , vital:26909
- Description: The twenty first century society is characterised by a lack of certainty and an unstable economic, social, political, and technological environment. Many South African higher education institutions are facing many challenges in understanding and responding to organisational change and development and this has implications for leadership. Ensuring an adequate leadership skills base is one of the key priorities for the transforming South African higher education landscape, especially as this pertains to developing the type of leaders who can meaningfully engage staff in change and transformation processes (Herbst, 2007). Effective leadership is vital for a productive, functional organisation and it is important to cultivate leadership development initiatives that are in alignment with and contribute to the achievement of the desired strategic outcomes. There is increasing emphasis on developing executive and middle management staff to be highly competent in achieving the strategic goals and priorities of the institution. The focus of this study is to explore the leadership capacity development needs of middle managers employed by a specific higher education institution in the Eastern Cape. The study will use the well-documented scholarship from Bernard Bass‟s interpretation of transformational, transactional, and laissez-faire leadership styles to frame the understanding of the leadership styles of middle managers as well as their developmental needs with regard to leadership (Bass, 1997). This will be used as an interpretive lens to assess the leadership development needs, including leadership skills needs, and the effectiveness of leadership development programmes in addressing the needs of middle managers within the higher education institution that is the focus of this study.
- Full Text:
- Date Issued: 2014
- Authors: Moodley, Kumaree
- Date: 2014
- Subjects: LCSHDevelopment leadership Educational leadership
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: http://hdl.handle.net/10948/11309 , vital:26909
- Description: The twenty first century society is characterised by a lack of certainty and an unstable economic, social, political, and technological environment. Many South African higher education institutions are facing many challenges in understanding and responding to organisational change and development and this has implications for leadership. Ensuring an adequate leadership skills base is one of the key priorities for the transforming South African higher education landscape, especially as this pertains to developing the type of leaders who can meaningfully engage staff in change and transformation processes (Herbst, 2007). Effective leadership is vital for a productive, functional organisation and it is important to cultivate leadership development initiatives that are in alignment with and contribute to the achievement of the desired strategic outcomes. There is increasing emphasis on developing executive and middle management staff to be highly competent in achieving the strategic goals and priorities of the institution. The focus of this study is to explore the leadership capacity development needs of middle managers employed by a specific higher education institution in the Eastern Cape. The study will use the well-documented scholarship from Bernard Bass‟s interpretation of transformational, transactional, and laissez-faire leadership styles to frame the understanding of the leadership styles of middle managers as well as their developmental needs with regard to leadership (Bass, 1997). This will be used as an interpretive lens to assess the leadership development needs, including leadership skills needs, and the effectiveness of leadership development programmes in addressing the needs of middle managers within the higher education institution that is the focus of this study.
- Full Text:
- Date Issued: 2014
The isolation and partial characterization of a2-antiplasmin and plasminogen from ostrich plasma
- Authors: Thomas, Adele René
- Date: 2000
- Subjects: Serpins , Ostriches , Antifibrinolytic agents , Plasminogen , Plasmin
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:11080 , http://hdl.handle.net/10948/274 , http://hdl.handle.net/10948/d1005751 , Serpins , Ostriches , Antifibrinolytic agents , Plasminogen , Plasmin
- Description: This study reports the isolation, purification and partial characterisation of the ostrich serpin, a2AP, as well as its target enzyme, ostrich plasmin, in its active and inactive proenzyme, viz. plasminogen, forms. Three different procedures were undertaken to isolate and purify ostrich a2AP. The first one involved L-lysine-Sepharose chromatography, ammonium sulfate fractionation, ion-exchange chromatography on Toyopearl Super-Q 650S, and ostrich plasminogen-Sepharose affinity chromatography. The second procedure replaced the latter chromatographic step with gel filtration on Sephadex G-200 and hydroxylapatite chromatography, while the third one employed instead the theoretically more efficient LBSI-Sepharose chromatographic step. The third procedure yielded purified ostrich a2AP, but the degree of purity and yield were relatively low. Ostrich plasminogen was highly purified after L-lysine-Sepharose chromatography and ostrich plasmin was obtained by the urokinase-activation of the purified ostrich plasminogen Ostrich a2AP revealed an Mr of 77-84 K and two isoelectric forms of pI 3.85 and 6.18. Nterminal sequence analysis showed ostrich a2AP to have only 2 out of 11 residues in common with both those of human and bovine a2AP. Ostrich a2AP showed the largest inhibitory effects on ostrich plasmin, followed by comm. bovine chymotrypsin, trypsin and plasmin, in that order, and it appeared to be a much less potent plasmin inhibitor than bovine aprotinin, but a much more potent one than the synthetic inhibitors, DFP and EACA. Ostrich plasminogen showed an Mr of 92 K and multiple isoelectric forms (~7) in the pI range 6.01-9.18, with a major one of pI 6.01. It showed a total of 775 amino acid residues and its N-terminal sequence showed ~53 percent identity with those of human, rabbit, cat, and ox plasminogens. Ostrich plasmin revealed an Mr of 78 K, two isoelectric forms of pI 4.07 and 6.01, and a total of 638 amino acid residues. N-terminal sequence analysis showed that 2-4 residues are identical to the 5 of human, cat, dog, rabbit, and ox plasmins. The pH and temperature optima of ostrich plasmin were determined as 8.0 and 40 oC, respectively. The thermodynamic and kinetic parameters of ostrich plasmin were computed, and plasmin was shown to prefer Lys to Arg residues in the S1 position. In conclusion, ostrich a2AP, plasminogen and plasmin showed definite similarities to their mammalian counterparts, but there were also significant differences.
- Full Text:
- Date Issued: 2000
- Authors: Thomas, Adele René
- Date: 2000
- Subjects: Serpins , Ostriches , Antifibrinolytic agents , Plasminogen , Plasmin
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:11080 , http://hdl.handle.net/10948/274 , http://hdl.handle.net/10948/d1005751 , Serpins , Ostriches , Antifibrinolytic agents , Plasminogen , Plasmin
- Description: This study reports the isolation, purification and partial characterisation of the ostrich serpin, a2AP, as well as its target enzyme, ostrich plasmin, in its active and inactive proenzyme, viz. plasminogen, forms. Three different procedures were undertaken to isolate and purify ostrich a2AP. The first one involved L-lysine-Sepharose chromatography, ammonium sulfate fractionation, ion-exchange chromatography on Toyopearl Super-Q 650S, and ostrich plasminogen-Sepharose affinity chromatography. The second procedure replaced the latter chromatographic step with gel filtration on Sephadex G-200 and hydroxylapatite chromatography, while the third one employed instead the theoretically more efficient LBSI-Sepharose chromatographic step. The third procedure yielded purified ostrich a2AP, but the degree of purity and yield were relatively low. Ostrich plasminogen was highly purified after L-lysine-Sepharose chromatography and ostrich plasmin was obtained by the urokinase-activation of the purified ostrich plasminogen Ostrich a2AP revealed an Mr of 77-84 K and two isoelectric forms of pI 3.85 and 6.18. Nterminal sequence analysis showed ostrich a2AP to have only 2 out of 11 residues in common with both those of human and bovine a2AP. Ostrich a2AP showed the largest inhibitory effects on ostrich plasmin, followed by comm. bovine chymotrypsin, trypsin and plasmin, in that order, and it appeared to be a much less potent plasmin inhibitor than bovine aprotinin, but a much more potent one than the synthetic inhibitors, DFP and EACA. Ostrich plasminogen showed an Mr of 92 K and multiple isoelectric forms (~7) in the pI range 6.01-9.18, with a major one of pI 6.01. It showed a total of 775 amino acid residues and its N-terminal sequence showed ~53 percent identity with those of human, rabbit, cat, and ox plasminogens. Ostrich plasmin revealed an Mr of 78 K, two isoelectric forms of pI 4.07 and 6.01, and a total of 638 amino acid residues. N-terminal sequence analysis showed that 2-4 residues are identical to the 5 of human, cat, dog, rabbit, and ox plasmins. The pH and temperature optima of ostrich plasmin were determined as 8.0 and 40 oC, respectively. The thermodynamic and kinetic parameters of ostrich plasmin were computed, and plasmin was shown to prefer Lys to Arg residues in the S1 position. In conclusion, ostrich a2AP, plasminogen and plasmin showed definite similarities to their mammalian counterparts, but there were also significant differences.
- Full Text:
- Date Issued: 2000
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