Psychological capital as a moderator on the relationship between work-life balance and turnover intentions amongst selected bank employees in the Amathole district, Eastern Cape province
- Authors: Nyahwema, Cloudious
- Date: 2017
- Subjects: Employee competitive behavior -- South Africa -- Eastern Cape Employee motivation -- South Africa -- Eastern Cape Human capital -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/13556 , vital:39679
- Description: Globalisation has facilitated high mobility among 21st century employees allowing brain circulation to occur. However, high employee mobility also means organisations are losing employees to competitors some of which are global business moguls with better resources leaving emerging businesses at a disadvantage. Lately, the South African banking sector has also been affected with high employee turnover requiring the need for investigation. For these reasons, the main objective of the study was to investigate whether psychological capital significantly moderates the relationship between work-life balance and turnover intentions among selected bank employees in Amathole district, Eastern Cape Province of South Africa. The study also examined if there is a positive and significant relationship between psychological capital and work-life balance among selected bank employees. In addition, the study sought to examine if there is a positive and significant relationship between psychological capital and turnover intention among selected bank employees. The study followed a quantitative research approach. Therefore, survey questionnaires were used as means of data collection and data was analysed using the Statistical Package for Social Sciences (SPSS). Research results indicated that psychological capital significantly moderates the relationship between work-life balance and turnover intentions among selected bank employees. A significantly positive relationship between psychological capital (PsyCap) and work-life balance among selected bank employees was found. The results also revealed that there is no significant relationship between psychological capital and turnover intentions among selected bank employees.
- Full Text:
- Date Issued: 2017
- Authors: Nyahwema, Cloudious
- Date: 2017
- Subjects: Employee competitive behavior -- South Africa -- Eastern Cape Employee motivation -- South Africa -- Eastern Cape Human capital -- Psychological aspects
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/13556 , vital:39679
- Description: Globalisation has facilitated high mobility among 21st century employees allowing brain circulation to occur. However, high employee mobility also means organisations are losing employees to competitors some of which are global business moguls with better resources leaving emerging businesses at a disadvantage. Lately, the South African banking sector has also been affected with high employee turnover requiring the need for investigation. For these reasons, the main objective of the study was to investigate whether psychological capital significantly moderates the relationship between work-life balance and turnover intentions among selected bank employees in Amathole district, Eastern Cape Province of South Africa. The study also examined if there is a positive and significant relationship between psychological capital and work-life balance among selected bank employees. In addition, the study sought to examine if there is a positive and significant relationship between psychological capital and turnover intention among selected bank employees. The study followed a quantitative research approach. Therefore, survey questionnaires were used as means of data collection and data was analysed using the Statistical Package for Social Sciences (SPSS). Research results indicated that psychological capital significantly moderates the relationship between work-life balance and turnover intentions among selected bank employees. A significantly positive relationship between psychological capital (PsyCap) and work-life balance among selected bank employees was found. The results also revealed that there is no significant relationship between psychological capital and turnover intentions among selected bank employees.
- Full Text:
- Date Issued: 2017
Monitoring changes in vegetation distribution to ascertain the extent of degradation in the savannas of Nkonkobe Local Municipality, Eastern Cape, South Africa
- Authors: Masiza, Wonga
- Date: 2016
- Subjects: Savanna ecology -- South Africa -- Eastern Cape Land degradation -- South Africa -- Eastern Cape Vegetation management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/2027 , vital:27598
- Description: Savanna degradation is an environmental problem occurring in most countries around the world and it poses threats to biodiversity conservation, the food industry, and other economic sectors. According to FAO, South Africa’s rangelands exhibit the highest rate of fragmentation in comparison to range ecosystems in neighbouring countries including Lesotho and Swaziland, and consensus among researchers is that communal rangelands are more degraded than commercial rangelands. Although researchers and communities have identified the occurrence of land degradation in communal savannas at a local scale, land degradation has been poorly estimated because little has been done to quantify the extent and dynamics of perceived and observed changes associated with land degradation. The main goal of this study is to provide empirical insights on the direction of changes in the communal savannas of Nkonkobe Local Municipality in order to inform policy formulation and implementation. Additional to the communal sites is a private farm included for comparative analysis of trends in communal and commercial savannas. Landsat imagery was used to map, assess, and quantify the extent of land degradation in Nkonkobe Local Municipality, over a period of 30 years between 1984 and 2014. Field investigations were undertaken in June 2015 to acquire reference data to guide supervised classification of Landsat images. Three algorithms (Mahalanobis-distance, Minimum-distance, and Maximum likelihood classification) were compared to identify a classifier that produced the best results. The maximum likelihood classifier produced the best results with classification accuracy levels of 95.24 percent, 89.66 percent, and 95.65 percent for Honeydale Farm, Thyume, and Sheshegu respectively. Regression analysis revealed that both communal and private lands have experienced statistically significant increases in bush encroachment and decreases in surface water. Communal savannas have been confronted more by expansion of built-up area, decrease in open grassland, abandonment of arable land, soil erosion, and a steady invasion by Acacia Karroo compared to the privately owned commercial farm. The land cover changes measured through this investigation suggest an environmental shift that threatens biodiversity and agricultural activity. The study provides empirically informed insights about the direction to which these savannas are changing with the hope that the findings will prompt formulation and implementation of effective policies.
- Full Text:
- Date Issued: 2016
- Authors: Masiza, Wonga
- Date: 2016
- Subjects: Savanna ecology -- South Africa -- Eastern Cape Land degradation -- South Africa -- Eastern Cape Vegetation management -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/2027 , vital:27598
- Description: Savanna degradation is an environmental problem occurring in most countries around the world and it poses threats to biodiversity conservation, the food industry, and other economic sectors. According to FAO, South Africa’s rangelands exhibit the highest rate of fragmentation in comparison to range ecosystems in neighbouring countries including Lesotho and Swaziland, and consensus among researchers is that communal rangelands are more degraded than commercial rangelands. Although researchers and communities have identified the occurrence of land degradation in communal savannas at a local scale, land degradation has been poorly estimated because little has been done to quantify the extent and dynamics of perceived and observed changes associated with land degradation. The main goal of this study is to provide empirical insights on the direction of changes in the communal savannas of Nkonkobe Local Municipality in order to inform policy formulation and implementation. Additional to the communal sites is a private farm included for comparative analysis of trends in communal and commercial savannas. Landsat imagery was used to map, assess, and quantify the extent of land degradation in Nkonkobe Local Municipality, over a period of 30 years between 1984 and 2014. Field investigations were undertaken in June 2015 to acquire reference data to guide supervised classification of Landsat images. Three algorithms (Mahalanobis-distance, Minimum-distance, and Maximum likelihood classification) were compared to identify a classifier that produced the best results. The maximum likelihood classifier produced the best results with classification accuracy levels of 95.24 percent, 89.66 percent, and 95.65 percent for Honeydale Farm, Thyume, and Sheshegu respectively. Regression analysis revealed that both communal and private lands have experienced statistically significant increases in bush encroachment and decreases in surface water. Communal savannas have been confronted more by expansion of built-up area, decrease in open grassland, abandonment of arable land, soil erosion, and a steady invasion by Acacia Karroo compared to the privately owned commercial farm. The land cover changes measured through this investigation suggest an environmental shift that threatens biodiversity and agricultural activity. The study provides empirically informed insights about the direction to which these savannas are changing with the hope that the findings will prompt formulation and implementation of effective policies.
- Full Text:
- Date Issued: 2016
The impact of South Africa's economic diplomacy on Africa's development
- Authors: Mlaba, Lindokuhle Hendrick
- Date: 2016
- Subjects: Economic development Africa -- Economic conditions Economic development -- Political aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/11531 , vital:26935
- Description: South Africa has become a significant role player in the international relations since being readmitted into the world community after the first democratic election in 1994. The primary focus of country’s international relations is the African continent. South Africa has played a pivotal role in bringing peace across the continent. There has also been an increase in South Africa’s engagement with the continent on economic and trade issues. South Africa’s economic diplomacy has been scrutinized from different angles. There has been perceptions of a South Africa with imperialists or hegemonic tendencies resembling those of the West. There are also those who view South Africa’s economic role in the continent in the positive light as a contributor to economic growth and development. The South African governments have always preached the notion of the “African agenda” and the interest in fair trade and engagement with the continent. This study assesses different debates regarding South Africa’s economic diplomacy in Africa and explores if this is benefiting the continent’s development. The study also considers if such economic diplomacy has positive spin off for the South African economy. Since economic diplomacy is operated at government level the study also considers how economic diplomacy is coordinated in South Africa. There are a number of recommendations presented for the improvement of economic diplomacy in South Africa.
- Full Text:
- Date Issued: 2016
- Authors: Mlaba, Lindokuhle Hendrick
- Date: 2016
- Subjects: Economic development Africa -- Economic conditions Economic development -- Political aspects
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/11531 , vital:26935
- Description: South Africa has become a significant role player in the international relations since being readmitted into the world community after the first democratic election in 1994. The primary focus of country’s international relations is the African continent. South Africa has played a pivotal role in bringing peace across the continent. There has also been an increase in South Africa’s engagement with the continent on economic and trade issues. South Africa’s economic diplomacy has been scrutinized from different angles. There has been perceptions of a South Africa with imperialists or hegemonic tendencies resembling those of the West. There are also those who view South Africa’s economic role in the continent in the positive light as a contributor to economic growth and development. The South African governments have always preached the notion of the “African agenda” and the interest in fair trade and engagement with the continent. This study assesses different debates regarding South Africa’s economic diplomacy in Africa and explores if this is benefiting the continent’s development. The study also considers if such economic diplomacy has positive spin off for the South African economy. Since economic diplomacy is operated at government level the study also considers how economic diplomacy is coordinated in South Africa. There are a number of recommendations presented for the improvement of economic diplomacy in South Africa.
- Full Text:
- Date Issued: 2016
The contribution of the Anglican church to education in the Cape
- Authors: Rawlins, G E
- Date: 1960
- Subjects: Church and education -- South Africa , Church of England -- Education -- South Africa , Education -- South Africa -- Cape of Good Hope
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1978 , http://hdl.handle.net/10962/d1013055
- Description: In his "Onderwys in Kaapland, 1652 - 1939", Dr. P.S. du Toit makes special references to the educational work of the Anglican Church, indicating that there is some contribution. This attitude has as its aim to expose more of the reef of which the outcrops receive attention by Dr. du Toit ... much can happen between 1807 and 1829, and some of what did is described in these pages. One of Dr. du Toit's interests is the effect of the attempt to make English and instruction in English the basis of all education. Chap. 1, p. 1.
- Full Text:
- Date Issued: 1960
- Authors: Rawlins, G E
- Date: 1960
- Subjects: Church and education -- South Africa , Church of England -- Education -- South Africa , Education -- South Africa -- Cape of Good Hope
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1978 , http://hdl.handle.net/10962/d1013055
- Description: In his "Onderwys in Kaapland, 1652 - 1939", Dr. P.S. du Toit makes special references to the educational work of the Anglican Church, indicating that there is some contribution. This attitude has as its aim to expose more of the reef of which the outcrops receive attention by Dr. du Toit ... much can happen between 1807 and 1829, and some of what did is described in these pages. One of Dr. du Toit's interests is the effect of the attempt to make English and instruction in English the basis of all education. Chap. 1, p. 1.
- Full Text:
- Date Issued: 1960
An investigation into school principals' experience and perceptions of participative management
- Authors: Mungunda, Charles
- Date: 2004
- Subjects: Education -- Namibia Educational change -- Namibia School management and organization -- Namibia Educational leadership -- Namibia Management -- Employee participation -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1599 , http://hdl.handle.net/10962/d1003481
- Description: The purpose of this research was to investigate three principals’ perceptions and experience of participative management and to gain insight into and understanding of the dimensions involved in participative management from the perspective of the three principals. The research was conducted within the interpretive paradigm, since I was interested in understanding the subjective experience and individual perceptions of three principals with regard to participative management and the meaning they attach to it in their natural settings: how they describe, interpret and make sense of participative management. Data were collected by means of questionnaires, interviews and observation. The findings indicate overwhelming support for the notion that participative management (collegiality) does have a positive influence with regard to creating a sense of common goals, shared vision, a sense of ownership, commitment and improved human relations. The respondents emphasized the critical role of the leader in facilitating the implementation of collegiality as well as an increasing awareness of the potential of participative management to improve human development through delegation. The responses revealed interesting paradoxes with regard to the tensions between leadership and leaderless organizations, as well as between autonomy and interdependence. Responses also reflect the sentiment that participative management should be selective, involving only those with the necessary skills and expertise in the decision-making process. While there is an appreciation of the benefits to be derived from collegiality, critical statements about participative management include the time-consuming nature of participative management, and the notion that participative management impinges on the authority of the principals.
- Full Text:
- Date Issued: 2004
- Authors: Mungunda, Charles
- Date: 2004
- Subjects: Education -- Namibia Educational change -- Namibia School management and organization -- Namibia Educational leadership -- Namibia Management -- Employee participation -- Namibia
- Language: English
- Type: Thesis , Masters , MEd
- Identifier: vital:1599 , http://hdl.handle.net/10962/d1003481
- Description: The purpose of this research was to investigate three principals’ perceptions and experience of participative management and to gain insight into and understanding of the dimensions involved in participative management from the perspective of the three principals. The research was conducted within the interpretive paradigm, since I was interested in understanding the subjective experience and individual perceptions of three principals with regard to participative management and the meaning they attach to it in their natural settings: how they describe, interpret and make sense of participative management. Data were collected by means of questionnaires, interviews and observation. The findings indicate overwhelming support for the notion that participative management (collegiality) does have a positive influence with regard to creating a sense of common goals, shared vision, a sense of ownership, commitment and improved human relations. The respondents emphasized the critical role of the leader in facilitating the implementation of collegiality as well as an increasing awareness of the potential of participative management to improve human development through delegation. The responses revealed interesting paradoxes with regard to the tensions between leadership and leaderless organizations, as well as between autonomy and interdependence. Responses also reflect the sentiment that participative management should be selective, involving only those with the necessary skills and expertise in the decision-making process. While there is an appreciation of the benefits to be derived from collegiality, critical statements about participative management include the time-consuming nature of participative management, and the notion that participative management impinges on the authority of the principals.
- Full Text:
- Date Issued: 2004
The investigation of the hydrolysis reaction of m-phenylene to resorcinol
- Authors: Khaile, Thebeeapelo John
- Date: 2002
- Subjects: Resorcinol
- Language: English
- Type: Thesis , Masters , MTech (Chemistry)
- Identifier: vital:10961 , http://hdl.handle.net/10948/107 , Resorcinol
- Description: The purpose of this study was to characterise the resinous material formed during the acid catalysed hydrolysis of m-phenylenediamine (MPDA) to resorcinol, and to establish a reaction mechanism that could explain the formation of both resorcinol and the resinous materials in the reaction. A further objective was to determine reaction conditions that would lead to reduced formation of the resins during the hydrolysis reaction. The number of compounds present in a sample taken during the course of the hydrolysis reaction was determined by HPLC fitted with a photodiode array detector. Five main components were detected. These compounds were identified as mphenylenediamine, m-aminophenol, resorcinol, 3,3’-aminodiphenylamine and 3- amino-3’-hydroxydiphenylamine by means of GC-MS. 3,3’-Diaminodiphenylamine is formed by self-condensation of MPDA and 3-amino-3’-hydroxydiphenylamine is formed by the reaction of MPDA with resorcinol. The degree of formation of these intermediates is substantially reduced when MPDA is added dose-wise to phosphoric acid at a reaction temperature of 220oC. The reaction mechanism of the hydrolysis reaction was investigated by isotopic lable incorporation, followed by analysis by NMR. This was done by hydrolysing MPDA using deuterated phosphoric acid (D3PO4). D3PO4 was generated by dissolving phosphorus pentoxide in deuterium oxide. The resorcinol product obtained from the hydrolysis using D3PO4 was found to be deuterated on the C-2, C-4 and C-6 positions. This suggests that the hydrolysis reaction involves protonation of MPDA on these positions, and this results in the formation of an iminium ion as one of the resonance forms. Hydrolysis then occurs on the positively charged carbon of this species. Fertiliser grade phosphoric acid can be used in the hydrolysis reaction, provided sulphates are removed before the acid is used in the hydrolysis reaction. The hydrolysis reaction using either ammonium sulphate or sulphuric acid produces resorcinol in yields lower than 60% if the hydrolysis is conducted in one pass. If these catalysts are used in the hydrolysis reaction, the reaction mixture needs to be re-heated after removal of resorcinol in order to increase the yield. Hydrolysis of MPDA using zirconium phosphate as catalyst gave resorcinol yields in excess of 90% over 24 hours. These reactions were carried out at very low concentrations of MPDA (0.3%). The mode of catalysis in these reactions is unclear. There is a possibility that the reaction is catalysed by phosphoric acid that leaches out of zirconium phosphate at high temperatures. The reaction might therefore not differ mechanistically from the phosphoric acid catalysed reaction. Further studies are required to clarify this point.
- Full Text:
- Date Issued: 2002
- Authors: Khaile, Thebeeapelo John
- Date: 2002
- Subjects: Resorcinol
- Language: English
- Type: Thesis , Masters , MTech (Chemistry)
- Identifier: vital:10961 , http://hdl.handle.net/10948/107 , Resorcinol
- Description: The purpose of this study was to characterise the resinous material formed during the acid catalysed hydrolysis of m-phenylenediamine (MPDA) to resorcinol, and to establish a reaction mechanism that could explain the formation of both resorcinol and the resinous materials in the reaction. A further objective was to determine reaction conditions that would lead to reduced formation of the resins during the hydrolysis reaction. The number of compounds present in a sample taken during the course of the hydrolysis reaction was determined by HPLC fitted with a photodiode array detector. Five main components were detected. These compounds were identified as mphenylenediamine, m-aminophenol, resorcinol, 3,3’-aminodiphenylamine and 3- amino-3’-hydroxydiphenylamine by means of GC-MS. 3,3’-Diaminodiphenylamine is formed by self-condensation of MPDA and 3-amino-3’-hydroxydiphenylamine is formed by the reaction of MPDA with resorcinol. The degree of formation of these intermediates is substantially reduced when MPDA is added dose-wise to phosphoric acid at a reaction temperature of 220oC. The reaction mechanism of the hydrolysis reaction was investigated by isotopic lable incorporation, followed by analysis by NMR. This was done by hydrolysing MPDA using deuterated phosphoric acid (D3PO4). D3PO4 was generated by dissolving phosphorus pentoxide in deuterium oxide. The resorcinol product obtained from the hydrolysis using D3PO4 was found to be deuterated on the C-2, C-4 and C-6 positions. This suggests that the hydrolysis reaction involves protonation of MPDA on these positions, and this results in the formation of an iminium ion as one of the resonance forms. Hydrolysis then occurs on the positively charged carbon of this species. Fertiliser grade phosphoric acid can be used in the hydrolysis reaction, provided sulphates are removed before the acid is used in the hydrolysis reaction. The hydrolysis reaction using either ammonium sulphate or sulphuric acid produces resorcinol in yields lower than 60% if the hydrolysis is conducted in one pass. If these catalysts are used in the hydrolysis reaction, the reaction mixture needs to be re-heated after removal of resorcinol in order to increase the yield. Hydrolysis of MPDA using zirconium phosphate as catalyst gave resorcinol yields in excess of 90% over 24 hours. These reactions were carried out at very low concentrations of MPDA (0.3%). The mode of catalysis in these reactions is unclear. There is a possibility that the reaction is catalysed by phosphoric acid that leaches out of zirconium phosphate at high temperatures. The reaction might therefore not differ mechanistically from the phosphoric acid catalysed reaction. Further studies are required to clarify this point.
- Full Text:
- Date Issued: 2002
Exploring women's experience of fundal pressure during the second stage of labour
- Authors: Okafor, Uchenna Benedine
- Date: 2018
- Subjects: Labor (Obstetrics) Childbirth
- Language: English
- Type: Thesis , Masters , Magister of Curationis
- Identifier: http://hdl.handle.net/10353/15532 , vital:40424
- Description: Background and Aim: Despite the use of fundal pressure globally, there is a scarcity of information available on how women experience the application of uterine fundal pressure (UFP) during the second stage of labour. The aim of study was to explore the experiences of women concerning UFP application during the second stage of labour. Understanding women’s perception about UFP is important in informing the generation of new ideas to improve on the application of UFP for better outcomes. Methods: This was a qualitative, interpretive, and phenomenological analysis designed to explore the experiences of women regarding the application of UFP during the second stage of labour. Hermeneutics was applied to interpret the participants’ descriptions of their experiences as they tried to make sense of their exposure to UFP; bearing this in mind, the participants’ own interpretation was not distorted. The researcher immersed herself in each transcript, in order to make sense of each participant’s experiences and to gain a sense of what the participant had experienced during UFP application. Each interview was transcribed and analysed independently; and the convergences and divergences of themes were identified without losing the original meaning of each participant’s description before moving on to the subsequent interviews. The target population was women who had had UFP during second stage of labour. A purposive sampling method was used to select three women who were admitted to the DVDHMOU during the research period and who met the inclusion criteria. Information was collected through individual face-to-face interviews and semi-structured interview guide. The principal question was framed as: “Can you please share with me how you felt when the midwives pushed on your tummy to get the baby out”? An audio tape was used to record the interviews, and a notepad was used to make notes of gestures such smiles or other facial expressions. After each interview, the recorded interview was transferred onto a laptop and a file was opened for the interviewee, identified by a pseudonym. The interviews were transcribed verbatim as Word documents. Trustworthiness was maintained by applying the principles of credibility, transferability, dependability and conformability. Ethical approval was granted by the Ethical Committee of the University of Fort Hare. Permission to conduct the study was sought from the Eastern Cape Research Committee and Buffalo City Metropolitan Health District. Informed consent was obtained from the participants prior to data collection. Each interview was analysed separately after completion. Data was analysed using thematic content analysis applicable to interpretative phenomenological analysis (IPA) studies using six steps: reading and re-reading; initial noting; developing emergent themes; searching for connections across the emergent themes; moving to the next case; and lastly, looking for patterns across cases. Findings: The findings of this study indicated that the informants had feelings of fear, loneliness, worry and tearfulness; but also happiness associated with UFP during second stage of labour. They were also worried and expressed fear and anxiety concerning their infants; and their ability to give birth increased as they get tired in the process of pushing during UFP application. However, seeing their infants for the first time took most of the worries away, and all informants expressed relief when the birthing process was over. They also felt that their birthing experience was a very painful event; and were left alone, and they had not been given anything to drink or eat during labour. Midwives threatened them that their inability to pushing appropriately, could cause the death of their infants, leaving them with feelings of guilt and despair when their babies did not cry directly after birth. The findings demonstrated that midwives did not properly inform women what to expect during the second stage of their labour, whilst the midwives expected birthing mothers to know what was happening to them and how to react. Women in labour therefore depended almost entirely on information received from family members, and went into labour with preconceived ideas about labour pain. Although women do experience pain during the second stage of labour, the application UFP increased their pain. Four main themes emerged from the analysis, which are: perceived severity of UFP pain,emotional/physical reaction to UFP pain, perceptions of UFP and perception of midwives care and treatment. Conclusion: The uterine fundal pressure is not a pleasant experience for the women in the second stage of labour. Labouring women experienced pain, fear, and anxiety. However, they felt a sense of happiness after delivery. Before the application of UFP during the second stage of labour, midwives should explain to women the process of UFP application and what they can expect to happen; and where possible, and after explaining the procedure, midwives should get written permission before they apply the intervention during labour.
- Full Text:
- Date Issued: 2018
- Authors: Okafor, Uchenna Benedine
- Date: 2018
- Subjects: Labor (Obstetrics) Childbirth
- Language: English
- Type: Thesis , Masters , Magister of Curationis
- Identifier: http://hdl.handle.net/10353/15532 , vital:40424
- Description: Background and Aim: Despite the use of fundal pressure globally, there is a scarcity of information available on how women experience the application of uterine fundal pressure (UFP) during the second stage of labour. The aim of study was to explore the experiences of women concerning UFP application during the second stage of labour. Understanding women’s perception about UFP is important in informing the generation of new ideas to improve on the application of UFP for better outcomes. Methods: This was a qualitative, interpretive, and phenomenological analysis designed to explore the experiences of women regarding the application of UFP during the second stage of labour. Hermeneutics was applied to interpret the participants’ descriptions of their experiences as they tried to make sense of their exposure to UFP; bearing this in mind, the participants’ own interpretation was not distorted. The researcher immersed herself in each transcript, in order to make sense of each participant’s experiences and to gain a sense of what the participant had experienced during UFP application. Each interview was transcribed and analysed independently; and the convergences and divergences of themes were identified without losing the original meaning of each participant’s description before moving on to the subsequent interviews. The target population was women who had had UFP during second stage of labour. A purposive sampling method was used to select three women who were admitted to the DVDHMOU during the research period and who met the inclusion criteria. Information was collected through individual face-to-face interviews and semi-structured interview guide. The principal question was framed as: “Can you please share with me how you felt when the midwives pushed on your tummy to get the baby out”? An audio tape was used to record the interviews, and a notepad was used to make notes of gestures such smiles or other facial expressions. After each interview, the recorded interview was transferred onto a laptop and a file was opened for the interviewee, identified by a pseudonym. The interviews were transcribed verbatim as Word documents. Trustworthiness was maintained by applying the principles of credibility, transferability, dependability and conformability. Ethical approval was granted by the Ethical Committee of the University of Fort Hare. Permission to conduct the study was sought from the Eastern Cape Research Committee and Buffalo City Metropolitan Health District. Informed consent was obtained from the participants prior to data collection. Each interview was analysed separately after completion. Data was analysed using thematic content analysis applicable to interpretative phenomenological analysis (IPA) studies using six steps: reading and re-reading; initial noting; developing emergent themes; searching for connections across the emergent themes; moving to the next case; and lastly, looking for patterns across cases. Findings: The findings of this study indicated that the informants had feelings of fear, loneliness, worry and tearfulness; but also happiness associated with UFP during second stage of labour. They were also worried and expressed fear and anxiety concerning their infants; and their ability to give birth increased as they get tired in the process of pushing during UFP application. However, seeing their infants for the first time took most of the worries away, and all informants expressed relief when the birthing process was over. They also felt that their birthing experience was a very painful event; and were left alone, and they had not been given anything to drink or eat during labour. Midwives threatened them that their inability to pushing appropriately, could cause the death of their infants, leaving them with feelings of guilt and despair when their babies did not cry directly after birth. The findings demonstrated that midwives did not properly inform women what to expect during the second stage of their labour, whilst the midwives expected birthing mothers to know what was happening to them and how to react. Women in labour therefore depended almost entirely on information received from family members, and went into labour with preconceived ideas about labour pain. Although women do experience pain during the second stage of labour, the application UFP increased their pain. Four main themes emerged from the analysis, which are: perceived severity of UFP pain,emotional/physical reaction to UFP pain, perceptions of UFP and perception of midwives care and treatment. Conclusion: The uterine fundal pressure is not a pleasant experience for the women in the second stage of labour. Labouring women experienced pain, fear, and anxiety. However, they felt a sense of happiness after delivery. Before the application of UFP during the second stage of labour, midwives should explain to women the process of UFP application and what they can expect to happen; and where possible, and after explaining the procedure, midwives should get written permission before they apply the intervention during labour.
- Full Text:
- Date Issued: 2018
Digestible energy as a criterion for the development of diets for the African sharptooth catfish, Clarias gariepinus (Pisces: Clariidae)
- Authors: Rouhani, Q A
- Date: 1993
- Subjects: Clariidae , Catfishes -- Africa , Catfishes -- Nutrition -- Requirements -- Africa , Catfishes , Clarias
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5259 , http://hdl.handle.net/10962/d1005103
- Description: Based on a number of attributes, the African sharptooth catfish, Clarias gariepinus is an ideal aquaculture species. Much work has been undertaken on developing the technology for the commercial culture of the species inclusive of determining the nutritional requirements for cost effective feed formulation. However, digestible energy (DE) values for specific feed ingredients were unknown. As DE values are not interchangeable between species, this study set out to determine the DE values for conventional and unconventional feed-ingredients for the formulation of an optimal feed. The ultimate goal in feed formulation is to produce a diet that supports the maximum production at the least cost. The indirect method was found to be most suitable in obtaining DE values for the catfish. Feed samples were marked by adding 2% chromic oxide as an inert indicator. The fish were then force-fed and faecal samples were obtained from the hindgut by stripping the fish 10 hours after feeding as this was found to be when the hind-gut was at its fullest and the feed maximally digested. A linear based computer programme was used to formulate experimental diets using the established DE values as an additional variable. The formulated feed was tested and compared to a commercial catfish diet and a standard reference diet (H-440). All of the newly formulated feeds were found to be cheaper to manufacture (by between 5 and 10%). Statistically (ANOVA), all of the experimental diets resulted in higher specific growth rates (SGR) than the standard reference diet. The commercial diet also resulted in a lower SGR than those experimental diets with similar protein levels.
- Full Text:
- Date Issued: 1993
- Authors: Rouhani, Q A
- Date: 1993
- Subjects: Clariidae , Catfishes -- Africa , Catfishes -- Nutrition -- Requirements -- Africa , Catfishes , Clarias
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:5259 , http://hdl.handle.net/10962/d1005103
- Description: Based on a number of attributes, the African sharptooth catfish, Clarias gariepinus is an ideal aquaculture species. Much work has been undertaken on developing the technology for the commercial culture of the species inclusive of determining the nutritional requirements for cost effective feed formulation. However, digestible energy (DE) values for specific feed ingredients were unknown. As DE values are not interchangeable between species, this study set out to determine the DE values for conventional and unconventional feed-ingredients for the formulation of an optimal feed. The ultimate goal in feed formulation is to produce a diet that supports the maximum production at the least cost. The indirect method was found to be most suitable in obtaining DE values for the catfish. Feed samples were marked by adding 2% chromic oxide as an inert indicator. The fish were then force-fed and faecal samples were obtained from the hindgut by stripping the fish 10 hours after feeding as this was found to be when the hind-gut was at its fullest and the feed maximally digested. A linear based computer programme was used to formulate experimental diets using the established DE values as an additional variable. The formulated feed was tested and compared to a commercial catfish diet and a standard reference diet (H-440). All of the newly formulated feeds were found to be cheaper to manufacture (by between 5 and 10%). Statistically (ANOVA), all of the experimental diets resulted in higher specific growth rates (SGR) than the standard reference diet. The commercial diet also resulted in a lower SGR than those experimental diets with similar protein levels.
- Full Text:
- Date Issued: 1993
Guibourtacacidin: a new Leuco-anthocyanidin from Rhodesian copalwood; (Guibourtia coleosperma)
- Authors: De Bruyn, Guustaaf Cornelis
- Date: 1962
- Subjects: Phanerogams , Angiosperms , Flavonoids , Anthocyanidins
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4459 , http://hdl.handle.net/10962/d1011043
- Description: A new leuco-anthocyanidin, (+)-7,4'dihydroxyflavan- 3:4-diol has been isolated from the heartwood of Guibourtia coleosperma. The heartwood extractives were fractionated by enrichment procedures involving fractional precipitation and Craig partitioning, to give a high RF (subscript) low molecular weight fraction containing the above leuco -anthocyanidin. This was further fractionated by "preparative" paper chromatography . The leuco-anthocyanidin was amorphous and present in low proportion (0.004%) in the wood. On boiling with alcoholic hydrochloric acid the compound gave an anthocyanidin which was identified as 3,7,4'-trihydroxyflavylium chloride. The degradation products formed by alkali fusion, on a micro-scale, were resorcinol and ♭-resorcylic acid, and also p (underscore)-hydroxybenzoic acid. This indicated resorcinol and phenol A and B nuclei respectively. The formation of amorphous dimethyl ether and tetra-acetoxy derivatives indicated two phenolic and two alcoholic hydroxyl groups. The above indicates that the compound was 7,4'-dihydroxyflavan- 3:4- diol and a molecular weight estimation showed it to be monomeric. Comparison of the infrared absorption spectra of the natural dimethyl ether with synthetic (±) dimethoxyflavan- 3:4-diol, to which a tentative 2:3- trans- 3:4-cis conformation had been assigned (Phatak and Kulkarni 94), showed close identity. Crystalline (±)-7, 4 '-dihydroxyflavan- 3:4 - diol was synthesised by catalytic hydrogenation over platinum oxide of the corresponoing (±) -7,4'-dihydroxyflavanonol. The flavanonol was synthesised by sodium hyposulphite reduction of the 7,4 ' -dihydroxyflavonol. The infrared absorption spectra of the natural and synthetic diols were similar but not identical. Chromatographic evidence showed the apparent identity of the synthetic and natural flavan- 3:4- diols, and two possible configurations were assigned for the natural flavan-3:4-diol. The new leuco-anthocyanidin was observed to form an O(underscore)-ethyl ether derivative on manipulation in ethanol. A monomeric leuco- fisetinidin from the heartwood was identified, by two dimensional paper chromatography, as (+) - mollisacacidin. The condensed tannins found also in the heartwood of G.(underscore)- coleosperma appear to be polymeric forms of leuco - fisetinidin and leuco - guibourtinidin. These polymeric tannins form a large proportion of the heartwood extractives and furnish high yields of fisetinidin and guibourtinidin chlorides on boiling with alcoholic hydrochloric acid. Examination of some other members of the Guibourtia spp . by paper chromatography showed that only G (underscore). coleosperma contained the new leuco - anthocyanidin as well as a leuco - fisetinidin. G. (underscore) tessmannii and G. (underscore) demeusii heartwoods contained only leuco-fisetinidin and the related polymers and a close chemical relationship to G.(underscore) coleosperma is thus apparent. G.(underscore) arnoldiana on the other hand is not chemically interrelated with the above members since it appeared to contain only leuco - cyanidin. (±) - 7,4 ' -Dihydroxyflavan- 4-ol was synthesised by hydrogenation of the corresponding flavanone over platinum oxide. Observations were made regarding its reddenig and ease of condensation.
- Full Text:
- Date Issued: 1962
- Authors: De Bruyn, Guustaaf Cornelis
- Date: 1962
- Subjects: Phanerogams , Angiosperms , Flavonoids , Anthocyanidins
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4459 , http://hdl.handle.net/10962/d1011043
- Description: A new leuco-anthocyanidin, (+)-7,4'dihydroxyflavan- 3:4-diol has been isolated from the heartwood of Guibourtia coleosperma. The heartwood extractives were fractionated by enrichment procedures involving fractional precipitation and Craig partitioning, to give a high RF (subscript) low molecular weight fraction containing the above leuco -anthocyanidin. This was further fractionated by "preparative" paper chromatography . The leuco-anthocyanidin was amorphous and present in low proportion (0.004%) in the wood. On boiling with alcoholic hydrochloric acid the compound gave an anthocyanidin which was identified as 3,7,4'-trihydroxyflavylium chloride. The degradation products formed by alkali fusion, on a micro-scale, were resorcinol and ♭-resorcylic acid, and also p (underscore)-hydroxybenzoic acid. This indicated resorcinol and phenol A and B nuclei respectively. The formation of amorphous dimethyl ether and tetra-acetoxy derivatives indicated two phenolic and two alcoholic hydroxyl groups. The above indicates that the compound was 7,4'-dihydroxyflavan- 3:4- diol and a molecular weight estimation showed it to be monomeric. Comparison of the infrared absorption spectra of the natural dimethyl ether with synthetic (±) dimethoxyflavan- 3:4-diol, to which a tentative 2:3- trans- 3:4-cis conformation had been assigned (Phatak and Kulkarni 94), showed close identity. Crystalline (±)-7, 4 '-dihydroxyflavan- 3:4 - diol was synthesised by catalytic hydrogenation over platinum oxide of the corresponoing (±) -7,4'-dihydroxyflavanonol. The flavanonol was synthesised by sodium hyposulphite reduction of the 7,4 ' -dihydroxyflavonol. The infrared absorption spectra of the natural and synthetic diols were similar but not identical. Chromatographic evidence showed the apparent identity of the synthetic and natural flavan- 3:4- diols, and two possible configurations were assigned for the natural flavan-3:4-diol. The new leuco-anthocyanidin was observed to form an O(underscore)-ethyl ether derivative on manipulation in ethanol. A monomeric leuco- fisetinidin from the heartwood was identified, by two dimensional paper chromatography, as (+) - mollisacacidin. The condensed tannins found also in the heartwood of G.(underscore)- coleosperma appear to be polymeric forms of leuco - fisetinidin and leuco - guibourtinidin. These polymeric tannins form a large proportion of the heartwood extractives and furnish high yields of fisetinidin and guibourtinidin chlorides on boiling with alcoholic hydrochloric acid. Examination of some other members of the Guibourtia spp . by paper chromatography showed that only G (underscore). coleosperma contained the new leuco - anthocyanidin as well as a leuco - fisetinidin. G. (underscore) tessmannii and G. (underscore) demeusii heartwoods contained only leuco-fisetinidin and the related polymers and a close chemical relationship to G.(underscore) coleosperma is thus apparent. G.(underscore) arnoldiana on the other hand is not chemically interrelated with the above members since it appeared to contain only leuco - cyanidin. (±) - 7,4 ' -Dihydroxyflavan- 4-ol was synthesised by hydrogenation of the corresponding flavanone over platinum oxide. Observations were made regarding its reddenig and ease of condensation.
- Full Text:
- Date Issued: 1962
Efficient market hypothesis in South Africa: an analysis using the flexible form unit root test
- Authors: Nomatye, Anelisa
- Date: 2019
- Subjects: Stocks -- Prices -- South Africa , Stock exchanges -- South Africa Stocks -- South Africa Johannesburg Stock Exchange Economic indicators -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/42825 , vital:36697
- Description: An efficient stock market is characterised by prices that are reflective of all the information such that there are no opportunities for arbitrageurs. In an efficient market, it is impossible to beat the market, therefore it follows that stock prices in an efficient market should follow a random walk. This study investigates whether the Johannesburg Stock Exchange (JSE) is an efficient market using the JSE Top 40 listed stocks, thus the relevance of the EMH in the current South African market is analysed. A corerlation analysis is undertaken to find whether the individual stocks in the different sectors are correlated in their returns, or if there are any intersector correlations. This analysis showed that individual sector stocks are mostly correlated, however, the individual sector stocks do not show a relationship with common sectors. The data used is monthly data of the individual stocks from 31 January 1999 to 30 June 2018. The study takes into consideration that the period is post the Asian Contagion and during the dot.com bubble. Also considered is the Global Financial crisis that occurred in 2007/2008. The study period thus allows enough time for market corerction. The study utilises the conventional unit root tests; the augmented Dickey-Fuller (ADF), Phillips- Perron (PP) and the Kwiatkowski–Phillips–Schmidt–Shin (KPSS) tests. Also utilised are modified unit root tests of Elliot, Rothenburg and Stock (ERS) (1996) as well as Ng and Perron (2001). Due to criticisms of the initially utilised unit roots, the nonlinear test of Kapetanois et al. (2003) and the Flexible Fourier form (FFF) is employed. Based on the empirical analysis, the study demonstrates that although the studies received conflicting evidence the FFF demonstrates the most “power” of the tests, thus is deemed to provide more accurate results. This test provided evidence of stationarity in the JSE market, thus implying inefficiency. The results were different for only two of the forty stocks, namely, Shoprite and Bidvest which implied efficiency. The study thus found that the EMH is not relevant to the current South African market and other theories should be considered in analysing the market. This also provides a case for behavioural finance to be analysed, as the assumption that all investors are rational is questioned.
- Full Text:
- Date Issued: 2019
- Authors: Nomatye, Anelisa
- Date: 2019
- Subjects: Stocks -- Prices -- South Africa , Stock exchanges -- South Africa Stocks -- South Africa Johannesburg Stock Exchange Economic indicators -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10948/42825 , vital:36697
- Description: An efficient stock market is characterised by prices that are reflective of all the information such that there are no opportunities for arbitrageurs. In an efficient market, it is impossible to beat the market, therefore it follows that stock prices in an efficient market should follow a random walk. This study investigates whether the Johannesburg Stock Exchange (JSE) is an efficient market using the JSE Top 40 listed stocks, thus the relevance of the EMH in the current South African market is analysed. A corerlation analysis is undertaken to find whether the individual stocks in the different sectors are correlated in their returns, or if there are any intersector correlations. This analysis showed that individual sector stocks are mostly correlated, however, the individual sector stocks do not show a relationship with common sectors. The data used is monthly data of the individual stocks from 31 January 1999 to 30 June 2018. The study takes into consideration that the period is post the Asian Contagion and during the dot.com bubble. Also considered is the Global Financial crisis that occurred in 2007/2008. The study period thus allows enough time for market corerction. The study utilises the conventional unit root tests; the augmented Dickey-Fuller (ADF), Phillips- Perron (PP) and the Kwiatkowski–Phillips–Schmidt–Shin (KPSS) tests. Also utilised are modified unit root tests of Elliot, Rothenburg and Stock (ERS) (1996) as well as Ng and Perron (2001). Due to criticisms of the initially utilised unit roots, the nonlinear test of Kapetanois et al. (2003) and the Flexible Fourier form (FFF) is employed. Based on the empirical analysis, the study demonstrates that although the studies received conflicting evidence the FFF demonstrates the most “power” of the tests, thus is deemed to provide more accurate results. This test provided evidence of stationarity in the JSE market, thus implying inefficiency. The results were different for only two of the forty stocks, namely, Shoprite and Bidvest which implied efficiency. The study thus found that the EMH is not relevant to the current South African market and other theories should be considered in analysing the market. This also provides a case for behavioural finance to be analysed, as the assumption that all investors are rational is questioned.
- Full Text:
- Date Issued: 2019
The promotion of ethical egoism through morality mechanics in mass effect, fable III & fallout new vegas: a role-playing video game exploration
- Authors: Grobler, Carli
- Date: 2016
- Subjects: Egoism , Ethics Altruism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/7699 , vital:23393
- Description: The aim of this study is to determine whether or not ethical egoism is promoted during gameplay of three role-playing video games namely Mass Effect, Fable III and Fallout New Vegas. The rapid expansion of the video gaming industry as well as game studies as an academic field have made it necessary to understand what effects video games may have on society. This study shows that gamers come into contact with various ethico-moral dilemmas during gameplay and act in an egoistic manner in order to complete video games. Firstly, an explanation of game and gameplay are provided as well as an outline of two game studies methodologies, namely narratology and ludology. These two methodologies are then combined into a hybrid approach which is used to analyse the video games from both a narrative and gameplay point of view which allows for a more comprehensive analysis of each respective game. Thereafter, a discussion of B.F. Skinner's behaviourism is given in order to better understand gamer behaviour. Skinner's concepts of positive reinforcement, schedules of reinforcement and operant conditioning are then linked to video games to show behaviourism's influences on game design. Ethical egoism, as theorised by Thomas Hobbes and Jesse Kalin, provides the ethico-moral theory necessary for the analysis of the morality mechanic in each game. Ethico-moral dilemmas identified within each game are discussed with regards to the hybrid approach which details both narrative and gameplay consequences of in-game ethico-moral decision making. The study concludes that gamers are ethical egoists when engaged in gameplay, due to their desire to complete the video game. However, during gameplay, gamers are exposed to altruism which is often promoted through the narrative and the nature of in-game objectives. Suggestions for further studies are also given for example a more detailed analysis of gamer behaviour, a qualitative study of in-game ethico-moral actions as well as a study of games that are non-violent in nature.
- Full Text:
- Date Issued: 2016
- Authors: Grobler, Carli
- Date: 2016
- Subjects: Egoism , Ethics Altruism
- Language: English
- Type: Thesis , Masters , MA
- Identifier: http://hdl.handle.net/10948/7699 , vital:23393
- Description: The aim of this study is to determine whether or not ethical egoism is promoted during gameplay of three role-playing video games namely Mass Effect, Fable III and Fallout New Vegas. The rapid expansion of the video gaming industry as well as game studies as an academic field have made it necessary to understand what effects video games may have on society. This study shows that gamers come into contact with various ethico-moral dilemmas during gameplay and act in an egoistic manner in order to complete video games. Firstly, an explanation of game and gameplay are provided as well as an outline of two game studies methodologies, namely narratology and ludology. These two methodologies are then combined into a hybrid approach which is used to analyse the video games from both a narrative and gameplay point of view which allows for a more comprehensive analysis of each respective game. Thereafter, a discussion of B.F. Skinner's behaviourism is given in order to better understand gamer behaviour. Skinner's concepts of positive reinforcement, schedules of reinforcement and operant conditioning are then linked to video games to show behaviourism's influences on game design. Ethical egoism, as theorised by Thomas Hobbes and Jesse Kalin, provides the ethico-moral theory necessary for the analysis of the morality mechanic in each game. Ethico-moral dilemmas identified within each game are discussed with regards to the hybrid approach which details both narrative and gameplay consequences of in-game ethico-moral decision making. The study concludes that gamers are ethical egoists when engaged in gameplay, due to their desire to complete the video game. However, during gameplay, gamers are exposed to altruism which is often promoted through the narrative and the nature of in-game objectives. Suggestions for further studies are also given for example a more detailed analysis of gamer behaviour, a qualitative study of in-game ethico-moral actions as well as a study of games that are non-violent in nature.
- Full Text:
- Date Issued: 2016
An investigation of the security of passwords derived from African languages
- Authors: Sishi, Sibusiso Teboho
- Date: 2019
- Subjects: Computers -- Access control -- Passwords , Computer users -- Attitudes , Internet -- Access control , Internet -- Security measures , Internet -- Management , Data protection
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/163273 , vital:41024
- Description: Password authentication has become ubiquitous in the cyber age. To-date, there have been several studies on country based passwords by authors who studied, amongst others, English, Finnish, Italian and Chinese based passwords. However, there has been a lack of focused study on the type of passwords that are being created in Africa and whether there are benefits in creating passwords in an African language. For this research, password databases containing LAN Manager (LM) and NT LAN Manager (NTLM) hashes extracted from South African organisations in a variety of sectors in the economy, were obtained to gain an understanding of user behaviour in creating passwords. Analysis of the passwords obtained from these hashes (using several cracking methods) showed that many organisational passwords are based on the English language. This is understandable considering that the business language in South Africa is English even though South Africa has 11 official languages. African language based passwords were derived from known English weak passwords and some of the passwords were appended with numbers and special characters. The African based passwords created using eight Southern African languages were then uploaded to the Internet to test the security around using passwords based on African languages. Since most of the passwords were able to be cracked by third party researchers, we conclude that any password that is derived from known weak English words marked no improvement in the security of a password written in an African language, especially the more widely spoken languages, namely, isiZulu, isiXhosa and Setswana.
- Full Text:
- Date Issued: 2019
- Authors: Sishi, Sibusiso Teboho
- Date: 2019
- Subjects: Computers -- Access control -- Passwords , Computer users -- Attitudes , Internet -- Access control , Internet -- Security measures , Internet -- Management , Data protection
- Language: English
- Type: text , Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10962/163273 , vital:41024
- Description: Password authentication has become ubiquitous in the cyber age. To-date, there have been several studies on country based passwords by authors who studied, amongst others, English, Finnish, Italian and Chinese based passwords. However, there has been a lack of focused study on the type of passwords that are being created in Africa and whether there are benefits in creating passwords in an African language. For this research, password databases containing LAN Manager (LM) and NT LAN Manager (NTLM) hashes extracted from South African organisations in a variety of sectors in the economy, were obtained to gain an understanding of user behaviour in creating passwords. Analysis of the passwords obtained from these hashes (using several cracking methods) showed that many organisational passwords are based on the English language. This is understandable considering that the business language in South Africa is English even though South Africa has 11 official languages. African language based passwords were derived from known English weak passwords and some of the passwords were appended with numbers and special characters. The African based passwords created using eight Southern African languages were then uploaded to the Internet to test the security around using passwords based on African languages. Since most of the passwords were able to be cracked by third party researchers, we conclude that any password that is derived from known weak English words marked no improvement in the security of a password written in an African language, especially the more widely spoken languages, namely, isiZulu, isiXhosa and Setswana.
- Full Text:
- Date Issued: 2019
The interactive effects of light, temperature and CO₂/O₂ ratios in photosynthesis of Coix lachryma-jobi L
- Authors: Mjwara, Jabulani Michael
- Date: 1992
- Subjects: Coix , Plants -- Effect of light on , Plants -- Effect of oxygen on , Plants -- Effect of carbon dioxide on , Photosynthesis , Plants -- Effect of temperature on
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4216 , http://hdl.handle.net/10962/d1003785
- Description: A portable infra red gas analyzer was used to investigate the interactive effects of light, temperature, and CO,jO, ratios under controlled environmental conditions in an attempt to model gas exchange characteristics of Coix Iachryma-jobi L. Plotting light response curves as a function of temperature (20, 25 30 and 35°C) revealed no sign of light saturation even at a photosynthetic photon flux density (PPFD) close to 2000 !Lmol m-' sol. High net assimilation rates (A) of approximately 24 !Lmol CO, m"s'! were realized at 30-35°C. Assimilation (A) versus internal CO, partial pressure (C,) curves showed a steep rise with increase in C, but saturated at approximately 150 (JLII-!) and all the results, either in the absence or presence of 0" showed a similar response under all temperature regimes. C. Iachryma-jobi exhibited low CO, compensation points cr ) between 0 and 10 JLlI-! under similar experimental temperatures and either at 0 or 21%0,. The slopes of double reciprocal plots of llA versus llCi, were nearly identical and crossed the yintercept at almost identical points under all 0, concentrations. These data indicate first; that there was no apparent 0, inhibition and second; indicated that the apparent inhIbitor constant (K,) for 0, at the site of carboxylation did not change with increase in [OJ from 0 to 21% oxygen. These observations were further confirmed by results obtained from the analysis of apparent carboxylation efficiency (CE, as defined as the slope of response of A to increasing CO,), as no inhibition of A with increase of [OJ occurred. These characteristics were consistent with typical features of C,photosynthesis. The absence of 0, inhibition and low r values indicated that an efficient CO, concentrating mechanism which eliminates photorespiration exists in C. Iachryma-jobi. At the light microscope level, leaf anatomy exhibited typical C, structure viz. bundle sheath with large chloroplasts and this sheath is further surrounded by a radiate Kranz mesophyU cells. Furthermore the anatomical features suggested that C. wchryma-jobi was an NADP-ME species. Stomatal conductance (g,) to assimilation (g,/A) indicated an increase in A with decrease in g" an essential feature of improving water use efficiency (WUE), but one which drastically reduces CO, diffusion rate. The physical lintitation (stomatal lintitation, t) to CO, diffusion under various [0,] and temperatures, but constant PPFD, did not exhibit statistically significant change in t values at either 0 or 21% a, within each temperature regime, however there was a marked decrease in t as the plant approached its optimum photosynthetic temperature.
- Full Text:
- Date Issued: 1992
- Authors: Mjwara, Jabulani Michael
- Date: 1992
- Subjects: Coix , Plants -- Effect of light on , Plants -- Effect of oxygen on , Plants -- Effect of carbon dioxide on , Photosynthesis , Plants -- Effect of temperature on
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:4216 , http://hdl.handle.net/10962/d1003785
- Description: A portable infra red gas analyzer was used to investigate the interactive effects of light, temperature, and CO,jO, ratios under controlled environmental conditions in an attempt to model gas exchange characteristics of Coix Iachryma-jobi L. Plotting light response curves as a function of temperature (20, 25 30 and 35°C) revealed no sign of light saturation even at a photosynthetic photon flux density (PPFD) close to 2000 !Lmol m-' sol. High net assimilation rates (A) of approximately 24 !Lmol CO, m"s'! were realized at 30-35°C. Assimilation (A) versus internal CO, partial pressure (C,) curves showed a steep rise with increase in C, but saturated at approximately 150 (JLII-!) and all the results, either in the absence or presence of 0" showed a similar response under all temperature regimes. C. Iachryma-jobi exhibited low CO, compensation points cr ) between 0 and 10 JLlI-! under similar experimental temperatures and either at 0 or 21%0,. The slopes of double reciprocal plots of llA versus llCi, were nearly identical and crossed the yintercept at almost identical points under all 0, concentrations. These data indicate first; that there was no apparent 0, inhibition and second; indicated that the apparent inhIbitor constant (K,) for 0, at the site of carboxylation did not change with increase in [OJ from 0 to 21% oxygen. These observations were further confirmed by results obtained from the analysis of apparent carboxylation efficiency (CE, as defined as the slope of response of A to increasing CO,), as no inhibition of A with increase of [OJ occurred. These characteristics were consistent with typical features of C,photosynthesis. The absence of 0, inhibition and low r values indicated that an efficient CO, concentrating mechanism which eliminates photorespiration exists in C. Iachryma-jobi. At the light microscope level, leaf anatomy exhibited typical C, structure viz. bundle sheath with large chloroplasts and this sheath is further surrounded by a radiate Kranz mesophyU cells. Furthermore the anatomical features suggested that C. wchryma-jobi was an NADP-ME species. Stomatal conductance (g,) to assimilation (g,/A) indicated an increase in A with decrease in g" an essential feature of improving water use efficiency (WUE), but one which drastically reduces CO, diffusion rate. The physical lintitation (stomatal lintitation, t) to CO, diffusion under various [0,] and temperatures, but constant PPFD, did not exhibit statistically significant change in t values at either 0 or 21% a, within each temperature regime, however there was a marked decrease in t as the plant approached its optimum photosynthetic temperature.
- Full Text:
- Date Issued: 1992
Organisational leaders' perceptions of the challenges and constraints of the leadership development of Blacks in South African private organisations
- Authors: Nyamuda, Paul Andrew
- Date: 2000
- Subjects: Leadership , Black people -- South Africa , Black people -- Employment -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:3033 , http://hdl.handle.net/10962/d1002542 , Leadership , Black people -- South Africa , Black people -- Employment -- South Africa
- Description: In recent years, it has become clear that a lot of corporate collapse can be traced down to poor leadership. As more and more black executives are climbing the corporate ladder, it is becoming all the more necessary to explore how their effective leadership development can occur with private organisations in South Africa. There are many challenges and constraints associated with the leadership development of these executives. This can be expected as they are entering an environment which has been largely white-dominated. As a result they find themselves facing the challenges of succeeding amidst negative perceptions they have experienced from their superiors and subtle pressures from subordinates. Therefore, it can only be expected that if organisations are to maintain a competitive advantage they need to understand how to effectively develop this new breed of leaders. Hence, the researcher has used a qualitative approach to investigate the complexities of the experiences of black executives in private organisations. In terms of the theoretical framework, the research focuses on some of the new approaches to leadership. It was discovered that leadership development is essentially a process that goes beyond mere training sessions, and largely involves the relationships one has within the organisation. This involves relationships with superiors, peers, and subordinates. The research indicates that if these relationships are managed effectively, leadership development is enhanced. Whilst the role of formal training programs appeared somewhat downplayed, it was clear that these programs had a strong role in terms of their psychological impact on participants. They certainly affected their perception of the organisation and their own self-efficacy. The research, therefore illustrates how there are a variety of individual and organisational attributes that form a basis for effective leadership development of blacks in private organisations. The researcher argues that if these are implemented, organisational well-being is enhanced.
- Full Text:
- Date Issued: 2000
- Authors: Nyamuda, Paul Andrew
- Date: 2000
- Subjects: Leadership , Black people -- South Africa , Black people -- Employment -- South Africa
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: vital:3033 , http://hdl.handle.net/10962/d1002542 , Leadership , Black people -- South Africa , Black people -- Employment -- South Africa
- Description: In recent years, it has become clear that a lot of corporate collapse can be traced down to poor leadership. As more and more black executives are climbing the corporate ladder, it is becoming all the more necessary to explore how their effective leadership development can occur with private organisations in South Africa. There are many challenges and constraints associated with the leadership development of these executives. This can be expected as they are entering an environment which has been largely white-dominated. As a result they find themselves facing the challenges of succeeding amidst negative perceptions they have experienced from their superiors and subtle pressures from subordinates. Therefore, it can only be expected that if organisations are to maintain a competitive advantage they need to understand how to effectively develop this new breed of leaders. Hence, the researcher has used a qualitative approach to investigate the complexities of the experiences of black executives in private organisations. In terms of the theoretical framework, the research focuses on some of the new approaches to leadership. It was discovered that leadership development is essentially a process that goes beyond mere training sessions, and largely involves the relationships one has within the organisation. This involves relationships with superiors, peers, and subordinates. The research indicates that if these relationships are managed effectively, leadership development is enhanced. Whilst the role of formal training programs appeared somewhat downplayed, it was clear that these programs had a strong role in terms of their psychological impact on participants. They certainly affected their perception of the organisation and their own self-efficacy. The research, therefore illustrates how there are a variety of individual and organisational attributes that form a basis for effective leadership development of blacks in private organisations. The researcher argues that if these are implemented, organisational well-being is enhanced.
- Full Text:
- Date Issued: 2000
An exploratory study of the factors that influence the retention of managers in small to medium business enterprises
- Authors: Carr, Nathan Lars Armitage
- Date: 2013
- Subjects: Employee retention -- South Africa -- Eastern Cape Small business -- South Africa -- Eastern Cape Executives -- South Africa -- Eastern Cape Human capital -- Management Personnel management -- South Africa -- Eastern Cape Organizational effectiveness -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:813 , http://hdl.handle.net/10962/d1007740
- Description: Integrative Summary: Small to Medium Business Enterprises (SME's) are widely recognised as the driver of economic growth. SME's are responsible for employing large sections of the working population and, in doing so, facilitate the development of skills for many thousands of workers. Whilst SME's may differ (according to various definition criteria such as size or turnover) from other types of organisation, they share one common denominator across all organisations: their overall effectiveness depends largely on the individual and collective people that make up the organisation -their employees. In this context the central question relevant to the research is "how do SME's retain their valued employee managers?" A quantitative research method was applied in the research. Data was collected by way of a structured self-administered survey questionnaire designed from a post positivist paradigm. The survey was constricted by way of modifying and adapting previous surveys designed to investigate factors that influence staff retention, to be relevant to managers employed by SME's. The sample consisted of 35 managers employed by SME's in and around East London in the Eastern Cape, South Africa. The results of the research give rise to a number of clear indicators on the key retention factors of employee managers. Based on the research results SME's that want to have the best chance of retaining their employee managers need strong and effective leadership within the organisation, must address soft organisational factors that are conducive to an open and trusted working environment and the roles of managers must have inherent job factors that allow a sense of freedom to plan and execute tasks autonomously. Economic factors such as pay and financial benefits were identified through the research as being the least important factor when it came to manager retention. These conclusions provide SME owners and senior managers with insight into the factors that are most likely to influence their ability to retain employee managers.
- Full Text:
- Date Issued: 2013
- Authors: Carr, Nathan Lars Armitage
- Date: 2013
- Subjects: Employee retention -- South Africa -- Eastern Cape Small business -- South Africa -- Eastern Cape Executives -- South Africa -- Eastern Cape Human capital -- Management Personnel management -- South Africa -- Eastern Cape Organizational effectiveness -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MBA
- Identifier: vital:813 , http://hdl.handle.net/10962/d1007740
- Description: Integrative Summary: Small to Medium Business Enterprises (SME's) are widely recognised as the driver of economic growth. SME's are responsible for employing large sections of the working population and, in doing so, facilitate the development of skills for many thousands of workers. Whilst SME's may differ (according to various definition criteria such as size or turnover) from other types of organisation, they share one common denominator across all organisations: their overall effectiveness depends largely on the individual and collective people that make up the organisation -their employees. In this context the central question relevant to the research is "how do SME's retain their valued employee managers?" A quantitative research method was applied in the research. Data was collected by way of a structured self-administered survey questionnaire designed from a post positivist paradigm. The survey was constricted by way of modifying and adapting previous surveys designed to investigate factors that influence staff retention, to be relevant to managers employed by SME's. The sample consisted of 35 managers employed by SME's in and around East London in the Eastern Cape, South Africa. The results of the research give rise to a number of clear indicators on the key retention factors of employee managers. Based on the research results SME's that want to have the best chance of retaining their employee managers need strong and effective leadership within the organisation, must address soft organisational factors that are conducive to an open and trusted working environment and the roles of managers must have inherent job factors that allow a sense of freedom to plan and execute tasks autonomously. Economic factors such as pay and financial benefits were identified through the research as being the least important factor when it came to manager retention. These conclusions provide SME owners and senior managers with insight into the factors that are most likely to influence their ability to retain employee managers.
- Full Text:
- Date Issued: 2013
Climate change mitigation and resilience by four major supermarkets in East London, South Africa
- Authors: Sibanda, Patience
- Date: 2017
- Subjects: Climatic changes -- Economic aspects -- South Africa -- Eastern Cape Climate change mitigation -- South Africa -- Eastern Cape Agriculture -- Environmental aspects
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5406 , vital:29231
- Description: Climate change is a human development challenge. Its negative impacts have the potential to reverse the human development gains made in Africa. South Africa, just like many other countries in the Global South, is being negatively affected by climate change. The country`s economy is largely dependent on agriculture, extractive industries and manufacturing, all of which are vulnerable to climate change in different ways. This vulnerability means different public and private stakeholders must institute sustainable climate change mitigation and adaptation measures so as to ameliorate climate change impacts. Gradually transforming to an environmentally friendly ‘green economy’ and the reduction of greenhouse gas emissions are some of South Africa’s climate change mitigation priorities. Just like the public sector, the private sector has a major role to play in this transition to a low carbon economy through minimising its carbon emissions in their operations. Against this background, this qualitative research examines the role played by four major supermarkets (Shoprite, Spar, Pick n Pay and Woolworths), in climate change mitigation and resilience building. It does so through an appraisal of their mitigation and resilience programs. The four supermarkets were purposively selected in East London, Eastern Cape. Data collection combined heavy reliance on desktop discourse analysis with field interviews in the form of purposively sampled key informant interviews. The results show that the four major supermarkets are implementing a variety of climate change mitigation and resilience strategies. These include reduction of greenhouse gas emissions, prioritisation of renewable energy, recycling and environmentally friendly packaging, promotion of sustainable ways of farming and improved fuel efficiency in their transport systems. In terms of policy improvement, the study recommends that there is need for supermarkets to learn from each other’s’ climate change mitigation initiatives so as to advance South Africa’s ‘green economy’ agenda.
- Full Text:
- Date Issued: 2017
- Authors: Sibanda, Patience
- Date: 2017
- Subjects: Climatic changes -- Economic aspects -- South Africa -- Eastern Cape Climate change mitigation -- South Africa -- Eastern Cape Agriculture -- Environmental aspects
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/5406 , vital:29231
- Description: Climate change is a human development challenge. Its negative impacts have the potential to reverse the human development gains made in Africa. South Africa, just like many other countries in the Global South, is being negatively affected by climate change. The country`s economy is largely dependent on agriculture, extractive industries and manufacturing, all of which are vulnerable to climate change in different ways. This vulnerability means different public and private stakeholders must institute sustainable climate change mitigation and adaptation measures so as to ameliorate climate change impacts. Gradually transforming to an environmentally friendly ‘green economy’ and the reduction of greenhouse gas emissions are some of South Africa’s climate change mitigation priorities. Just like the public sector, the private sector has a major role to play in this transition to a low carbon economy through minimising its carbon emissions in their operations. Against this background, this qualitative research examines the role played by four major supermarkets (Shoprite, Spar, Pick n Pay and Woolworths), in climate change mitigation and resilience building. It does so through an appraisal of their mitigation and resilience programs. The four supermarkets were purposively selected in East London, Eastern Cape. Data collection combined heavy reliance on desktop discourse analysis with field interviews in the form of purposively sampled key informant interviews. The results show that the four major supermarkets are implementing a variety of climate change mitigation and resilience strategies. These include reduction of greenhouse gas emissions, prioritisation of renewable energy, recycling and environmentally friendly packaging, promotion of sustainable ways of farming and improved fuel efficiency in their transport systems. In terms of policy improvement, the study recommends that there is need for supermarkets to learn from each other’s’ climate change mitigation initiatives so as to advance South Africa’s ‘green economy’ agenda.
- Full Text:
- Date Issued: 2017
Exploring the identity construction of Johannesburg bodybuilders with Photovoice
- Authors: Rogers, Keegan
- Date: 2018
- Subjects: Identity (Psychology) Bodybuilders Athletes
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/12631 , vital:39294
- Description: Identity is a complex concept involving not only who one is, but who one is becoming. Identity is often shaped by one’s experiences and by one’s environment. The identity of bodybuilders is constructed through their experiences, which are often hidden. Using Participant Action Research, specifically Photovoice, the participants were provided a platform to share their experience from their own perspective. This research aimed to explore the identity of bodybuilders and what shapes their identity. Four male bodybuilders between the ages of twenty-one and twenty-eight participated in the study. The sample of participants consisted of two black males and two Caucasian males. The four athletes either selected or took photographs of significant aspects in their life that they felt contributed to their identity. The researcher conducted semi-structured interviews with the athletes regarding the photographic images they took. The interview transcripts and photographs were analysed using Thematic Analysis. Five main themes were identified: Diet (including water intake and on/off season cycles), Presentation of physique, Psychological impact on self-confidence, Risks involved with bodybuilding and Impact on personal life. Significances of the themes were discussed with the aim of increasing awareness regarding the experience of bodybuilders and how their experience as bodybuilders has shaped their identity.
- Full Text:
- Date Issued: 2018
- Authors: Rogers, Keegan
- Date: 2018
- Subjects: Identity (Psychology) Bodybuilders Athletes
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/12631 , vital:39294
- Description: Identity is a complex concept involving not only who one is, but who one is becoming. Identity is often shaped by one’s experiences and by one’s environment. The identity of bodybuilders is constructed through their experiences, which are often hidden. Using Participant Action Research, specifically Photovoice, the participants were provided a platform to share their experience from their own perspective. This research aimed to explore the identity of bodybuilders and what shapes their identity. Four male bodybuilders between the ages of twenty-one and twenty-eight participated in the study. The sample of participants consisted of two black males and two Caucasian males. The four athletes either selected or took photographs of significant aspects in their life that they felt contributed to their identity. The researcher conducted semi-structured interviews with the athletes regarding the photographic images they took. The interview transcripts and photographs were analysed using Thematic Analysis. Five main themes were identified: Diet (including water intake and on/off season cycles), Presentation of physique, Psychological impact on self-confidence, Risks involved with bodybuilding and Impact on personal life. Significances of the themes were discussed with the aim of increasing awareness regarding the experience of bodybuilders and how their experience as bodybuilders has shaped their identity.
- Full Text:
- Date Issued: 2018
A critical discourse analysis of the construction of adolescent-friendly services within training documents used by the National Adolescent-friendly Clinic Initiative in South Africa
- Authors: Ferrucci, Daniella
- Date: 2018
- Subjects: Discourse analysis Teenagers Reproductive health
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/12722 , vital:39315
- Description: The objective of this study was to critically explore the construction of adolescent and youth sexual and reproductive health and services within the South African National Adolescent-Friendly Clinic Initiative (NAFCI), by examining the training manuals and information booklets used to train the health service providers working within this programme. This was completed through the use of Foucauldian discourse analysis (FDA) and positioning theory. FDA was used to look for themes or discourses that emerged in the text, and to examine the role that power and language played in the talk around adolescent sexual and reproductive health. Positioning theory was used to explore the manner in which the young woman and health service provider were positioned within the documents, and the implications this had in relation to sexual and reproductive health and services. The discourses that emerged included discourses of risk, namely the “adolescent-in-transition” and the “sex-as-danger-and-disease” discourse; followed by the empowering discourse, the discourse of rights and responsibility, expert advice, and management and surveillance. These discourses generally depicted adolescent sexual and reproductive health in a mostly negative and problematic manner, which needed to be managed and governed by the more powerful and dominant medical expert. These discourses also positioned the young woman and the health care provider in contradictory ways. The young woman was either positioned as risk-seeking and problematic, due to her sexual behaviour, leaving her vulnerable in terms of her health and power; or she was positioned in a positive, healthy and responsible light. The health service provider was also positioned in contradictory ways. First she was positioned as an advisor and expert, due to her knowledge and skills; but then her position shifts into that a problem and a hindrance to accessing sexual and reproductive health services. The implications of these discourses serve to make sexual and reproductive healthcare a problem located within the individual. It fails to acknowledge the structural imbalances that are known to South Africa, but rather tries to construct it as a problem that needs to be managed by placing responsibility on the young woman and the health service providers.
- Full Text:
- Date Issued: 2018
- Authors: Ferrucci, Daniella
- Date: 2018
- Subjects: Discourse analysis Teenagers Reproductive health
- Language: English
- Type: Thesis , Masters , MSoc
- Identifier: http://hdl.handle.net/10353/12722 , vital:39315
- Description: The objective of this study was to critically explore the construction of adolescent and youth sexual and reproductive health and services within the South African National Adolescent-Friendly Clinic Initiative (NAFCI), by examining the training manuals and information booklets used to train the health service providers working within this programme. This was completed through the use of Foucauldian discourse analysis (FDA) and positioning theory. FDA was used to look for themes or discourses that emerged in the text, and to examine the role that power and language played in the talk around adolescent sexual and reproductive health. Positioning theory was used to explore the manner in which the young woman and health service provider were positioned within the documents, and the implications this had in relation to sexual and reproductive health and services. The discourses that emerged included discourses of risk, namely the “adolescent-in-transition” and the “sex-as-danger-and-disease” discourse; followed by the empowering discourse, the discourse of rights and responsibility, expert advice, and management and surveillance. These discourses generally depicted adolescent sexual and reproductive health in a mostly negative and problematic manner, which needed to be managed and governed by the more powerful and dominant medical expert. These discourses also positioned the young woman and the health care provider in contradictory ways. The young woman was either positioned as risk-seeking and problematic, due to her sexual behaviour, leaving her vulnerable in terms of her health and power; or she was positioned in a positive, healthy and responsible light. The health service provider was also positioned in contradictory ways. First she was positioned as an advisor and expert, due to her knowledge and skills; but then her position shifts into that a problem and a hindrance to accessing sexual and reproductive health services. The implications of these discourses serve to make sexual and reproductive healthcare a problem located within the individual. It fails to acknowledge the structural imbalances that are known to South Africa, but rather tries to construct it as a problem that needs to be managed by placing responsibility on the young woman and the health service providers.
- Full Text:
- Date Issued: 2018
Physiochemical and heavy metals fingerprints of the final effluents of Adelaide and Seymour wastewater treatment facilities in the Eastern Cape, South Africa
- Authors: Mutukwa, Dorcas
- Date: 2017
- Subjects: Water -- Purification Effluent quality -- Testing
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/8089 , vital:31520
- Description: Wastewater contains pathogens, heavy metals, nutrients, organic matter and other toxic chemicals and when discharged into the environment without proper treatment, it may cause adverse health problems and environment degradation. There have been reports in the Eastern Cape Province, South Africa of inadequate treated wastewater effluents being discharged into freshwater environments. This study reports on the physicochemical and heavy metals qualities for two wastewater treatment facilities in the Eastern Cape, South Africa over a six-month sampling period (September 2015 to February 2016). Wastewater effluent samples were collected from the influents, final effluents and receiving waterbodies as well as sludge samples in replicates. The physicochemical parameters were analysed using standard methods (APHA, 2012). The acid digested heavy metals samples were analysed using Atomic Absorption Spectrophotometer (iCE 3500 Thermo Fisher Spectrometer). The concentrations were compared to recommended limits used in South Africa and World Health Organisation (WHO). Physicochemical qualities assessed at Adelaide wastewater treatment plant ranged as follows: temperature (21.6 - 30.5 oC), turbidity (2.1 – 71.3 NTU), electrical conductivity (EC) (743.0 – 898.3 μ/Scm) and dissolved oxygen (DO) (2.11 – 3.50 mg/L) while the ranges of the parameter assessed at Seymour wastewater treatment plant ranged as follows: chemical dissolved oxygen (COD) (41.7 – 115.3 mg/L), EC (628 and 797.7 μ/Scm) and nitrates (4.6 – 11.0 mg/L. The heavy metals concentration for the final effluents at Adelaide wastewater treatment plant ranged as follows: Cd (0 – 0.002 mg/L), Cu (0 – 0.096 mg/L) and Fe (0 – 0.498 mg/L). Cu concentrations in sludge at Seymour wastewater treatment plant ranged between 83.82 and 132.07 mg/L. Reduction efficiencies of Adelaide in removing chlorides and sulphates were 33 and 36 percent respectively. Findings of study revealed negative impacts of inadequately treated effluents on receiving waterbodies and this puts communities which rely on the water as immediate source of fresh water for domestic purposes at health risk.
- Full Text:
- Date Issued: 2017
- Authors: Mutukwa, Dorcas
- Date: 2017
- Subjects: Water -- Purification Effluent quality -- Testing
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: http://hdl.handle.net/10353/8089 , vital:31520
- Description: Wastewater contains pathogens, heavy metals, nutrients, organic matter and other toxic chemicals and when discharged into the environment without proper treatment, it may cause adverse health problems and environment degradation. There have been reports in the Eastern Cape Province, South Africa of inadequate treated wastewater effluents being discharged into freshwater environments. This study reports on the physicochemical and heavy metals qualities for two wastewater treatment facilities in the Eastern Cape, South Africa over a six-month sampling period (September 2015 to February 2016). Wastewater effluent samples were collected from the influents, final effluents and receiving waterbodies as well as sludge samples in replicates. The physicochemical parameters were analysed using standard methods (APHA, 2012). The acid digested heavy metals samples were analysed using Atomic Absorption Spectrophotometer (iCE 3500 Thermo Fisher Spectrometer). The concentrations were compared to recommended limits used in South Africa and World Health Organisation (WHO). Physicochemical qualities assessed at Adelaide wastewater treatment plant ranged as follows: temperature (21.6 - 30.5 oC), turbidity (2.1 – 71.3 NTU), electrical conductivity (EC) (743.0 – 898.3 μ/Scm) and dissolved oxygen (DO) (2.11 – 3.50 mg/L) while the ranges of the parameter assessed at Seymour wastewater treatment plant ranged as follows: chemical dissolved oxygen (COD) (41.7 – 115.3 mg/L), EC (628 and 797.7 μ/Scm) and nitrates (4.6 – 11.0 mg/L. The heavy metals concentration for the final effluents at Adelaide wastewater treatment plant ranged as follows: Cd (0 – 0.002 mg/L), Cu (0 – 0.096 mg/L) and Fe (0 – 0.498 mg/L). Cu concentrations in sludge at Seymour wastewater treatment plant ranged between 83.82 and 132.07 mg/L. Reduction efficiencies of Adelaide in removing chlorides and sulphates were 33 and 36 percent respectively. Findings of study revealed negative impacts of inadequately treated effluents on receiving waterbodies and this puts communities which rely on the water as immediate source of fresh water for domestic purposes at health risk.
- Full Text:
- Date Issued: 2017
Strategic management of construction companies
- Authors: Van Rooyen, Roelof Petrus
- Date: 2013
- Subjects: Construction industry -- Planning , Business planning -- South Africa -- Eastern Cape , Corporate turnarounds -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9712 , http://hdl.handle.net/10948/d1020407
- Description: The research emanated from an investigation of GB7, GB8 and GB9 main contractors in the Eastern Cape Province of South Africa. The study was focussed on the strident economic times in the construction industry following the FIFA Soccer World Cup from August 2010 to December 2012. The research was conducted to identify the key strategy or combination of strategies keeping construction entities in operation. The study further investigates the key elements of a successful turnaround strategy as well as the most effective methods in implementing strategies within construction organizations. The research took the form of an empirical quantitative study where a descriptive survey was used to collect data. Structured interviews were held with the target population to collect data in the field. The study established that geographic diversification was the most effective method utilized by main contractors for survival during the study timeframe. The study also found that lowering of profit margins and preliminary and general amounts were most effective methods in the use of turn around strategies. The study finally concluded that effective steps were taken by main contractors in the Eastern Cape to implement corporate strategies within their organizations. Step by step guidance to all employees on new processes was the key element in successful strategic implementation of a strategy within construction organizations. The research conducted contributes to the strategic management competency within the built environment as well as the existing body of knowledge within the construction industry. All members of the construction industry in South Africa involved with strategic level planning of entities would value the study.
- Full Text:
- Date Issued: 2013
- Authors: Van Rooyen, Roelof Petrus
- Date: 2013
- Subjects: Construction industry -- Planning , Business planning -- South Africa -- Eastern Cape , Corporate turnarounds -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Masters , MSc
- Identifier: vital:9712 , http://hdl.handle.net/10948/d1020407
- Description: The research emanated from an investigation of GB7, GB8 and GB9 main contractors in the Eastern Cape Province of South Africa. The study was focussed on the strident economic times in the construction industry following the FIFA Soccer World Cup from August 2010 to December 2012. The research was conducted to identify the key strategy or combination of strategies keeping construction entities in operation. The study further investigates the key elements of a successful turnaround strategy as well as the most effective methods in implementing strategies within construction organizations. The research took the form of an empirical quantitative study where a descriptive survey was used to collect data. Structured interviews were held with the target population to collect data in the field. The study established that geographic diversification was the most effective method utilized by main contractors for survival during the study timeframe. The study also found that lowering of profit margins and preliminary and general amounts were most effective methods in the use of turn around strategies. The study finally concluded that effective steps were taken by main contractors in the Eastern Cape to implement corporate strategies within their organizations. Step by step guidance to all employees on new processes was the key element in successful strategic implementation of a strategy within construction organizations. The research conducted contributes to the strategic management competency within the built environment as well as the existing body of knowledge within the construction industry. All members of the construction industry in South Africa involved with strategic level planning of entities would value the study.
- Full Text:
- Date Issued: 2013