Business ethics in Ugandan small and medium-sized enterprises
- Authors: Mayanja, Jamiah
- Date: 2016
- Subjects: Business ethics -- Uganda , Small business -- Uganda
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8521 , vital:26400
- Description: SMEs have been acknowledged by governments globally as a prime source of economic growth and development. In Africa there has been a noticeable increase in the number of SME establishments. In Uganda, SMEs are the most popular business choice and play a major role in the national economy. Although SMEs significant economic contributions are generally acknowledged, being ethical and successful has become a challenge, as many SMEs in Uganda have not fully adopted and integrated ethics into their business strategies. Understanding the reasons for the increased unethical behaviour in SMEs is central to their continued business success. The primary objective of the study was to investigate the factors that influence ethical business conduct in Ugandan SMEs. From a comprehensive literature review, three main independent variables (staff-, business- and external environment factors) were identified as variables influencing ethical business conduct (dependent variable) of SMEs. A hypothetical model was developed to determine whether the independent variables have an influence on the dependent variable. Twelve hypotheses were formulated to test the relationships between three staff factors, five business factors, four external environment factors and ethical business conduct. The study sought the perceptions of SME owners or managers in the Kampala District and utilised the quantitative research paradigm. A survey was conducted with the aid of a structured self-administered questionnaire distributed by three fieldworkers. A combination of convenience and snowball sampling was utilised. The final sample comprised 384 respondents. The validity of the measuring instrument was ascertained by using exploratory factor analysis. The Cronbach‟s alpha values for reliability were calculated for each of the factors identified during the exploratory factor analysis. A total of ten valid and reliable factors were retained. Pearson product-moment correlation and multiple regression analysis were used to test the correlation and statistical significance of the relationships hypothesised between the various independent and dependent variables. One statistically significant relationship was found between the staff factors (employee attitude) and ethical business conduct. Two statistically significant relationships were found between the business factors (knowledge acquisition and management practices) and ethical business conduct. Three statistically significant relationships were found between the external environment factors (legal requirements, industry norm and media power) and ethical business conduct. External environmental factors seem to have a greater influence on SME ethical business conduct in Uganda. Multivariate Analysis of Variance (MANOVA) was used to identify if significant relationships exist between the eight demographic variables and seven reliable and valid independent variables. Furthermore, post-hoc Scheffé tests identified where the significant differences occurred between the different categories. Cohen‟s d-values were calculated in order to assess the practical significance of the mean scores. A total of twelve practical significant relationships were identified. SME owners or managers should consider employing staff with the right attitude to uphold sound ethical business values. They should implement ethical management practices to promote ethical business conduct amongst employees and ensure that employees are made aware of what is regarded as acceptable ethical business behaviour. SME owners or managers should adhere to legal requirements and industry norms to be known as businesses exhibiting ethical behaviour and utilise media to instil and guide ethical values in employees. Lastly, they must pay attention to the role that demographical variables such as: gender, level of education, current employment status, number of years in business and number of employees, play in behaving ethically in business.
- Full Text:
- Date Issued: 2016
- Authors: Mayanja, Jamiah
- Date: 2016
- Subjects: Business ethics -- Uganda , Small business -- Uganda
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8521 , vital:26400
- Description: SMEs have been acknowledged by governments globally as a prime source of economic growth and development. In Africa there has been a noticeable increase in the number of SME establishments. In Uganda, SMEs are the most popular business choice and play a major role in the national economy. Although SMEs significant economic contributions are generally acknowledged, being ethical and successful has become a challenge, as many SMEs in Uganda have not fully adopted and integrated ethics into their business strategies. Understanding the reasons for the increased unethical behaviour in SMEs is central to their continued business success. The primary objective of the study was to investigate the factors that influence ethical business conduct in Ugandan SMEs. From a comprehensive literature review, three main independent variables (staff-, business- and external environment factors) were identified as variables influencing ethical business conduct (dependent variable) of SMEs. A hypothetical model was developed to determine whether the independent variables have an influence on the dependent variable. Twelve hypotheses were formulated to test the relationships between three staff factors, five business factors, four external environment factors and ethical business conduct. The study sought the perceptions of SME owners or managers in the Kampala District and utilised the quantitative research paradigm. A survey was conducted with the aid of a structured self-administered questionnaire distributed by three fieldworkers. A combination of convenience and snowball sampling was utilised. The final sample comprised 384 respondents. The validity of the measuring instrument was ascertained by using exploratory factor analysis. The Cronbach‟s alpha values for reliability were calculated for each of the factors identified during the exploratory factor analysis. A total of ten valid and reliable factors were retained. Pearson product-moment correlation and multiple regression analysis were used to test the correlation and statistical significance of the relationships hypothesised between the various independent and dependent variables. One statistically significant relationship was found between the staff factors (employee attitude) and ethical business conduct. Two statistically significant relationships were found between the business factors (knowledge acquisition and management practices) and ethical business conduct. Three statistically significant relationships were found between the external environment factors (legal requirements, industry norm and media power) and ethical business conduct. External environmental factors seem to have a greater influence on SME ethical business conduct in Uganda. Multivariate Analysis of Variance (MANOVA) was used to identify if significant relationships exist between the eight demographic variables and seven reliable and valid independent variables. Furthermore, post-hoc Scheffé tests identified where the significant differences occurred between the different categories. Cohen‟s d-values were calculated in order to assess the practical significance of the mean scores. A total of twelve practical significant relationships were identified. SME owners or managers should consider employing staff with the right attitude to uphold sound ethical business values. They should implement ethical management practices to promote ethical business conduct amongst employees and ensure that employees are made aware of what is regarded as acceptable ethical business behaviour. SME owners or managers should adhere to legal requirements and industry norms to be known as businesses exhibiting ethical behaviour and utilise media to instil and guide ethical values in employees. Lastly, they must pay attention to the role that demographical variables such as: gender, level of education, current employment status, number of years in business and number of employees, play in behaving ethically in business.
- Full Text:
- Date Issued: 2016
Evaluation of flocculating potentials and charecterization of bioflocculants produced by three bacterial isolates from Algoa Bay, South Africa
- Authors: Okaiyeto, Kunle
- Date: 2016
- Subjects: Flocculation Water -- Purification -- Flocculation Water quality management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2633 , vital:27947
- Description: Flocculation has been widely adopted as one of the most effective methods to remove colloidal particles in water or wastewater treatment. Synthetic flocculants are conventionally used because of their high flocculating efficiency and cost-effectiveness. However, they have been reported to have hazardous properties and implicated in some serious health problems including senile dementia and neuro-toxicity, as well as being recalcitrant in the environment. Consequently, efforts are being geared away from the use of synthetic flocculants in water and wastewater treatment. Hence, the need for safe and eco-friendly flocculants has become imperative. Compared with synthetic flocculants, bioflocculants have special advantages such as safety, biodegradability and harmlessness to the environment and humans; attributes which make them potential alternatives in water treatment, downstream as well as fermentation processes. In the current study, the potentials of bacterial isolates recovered from Algoa Bay in the Eastern Cape Province of South Africa for bioflocculant production were investigated. The bacterial isolates were identified by polymerase chain reaction (PCR) as belonging to the Bacillus genus. The analysis of 16S ribosomal deoxyribonucleic acid (rDNA) nucleotide sequence of isolate M72 showed 99 percent similarity to Bacillus toyonensis strain BCT-7112 and was deposited in the GenBank as Bacillus toyonensis strain AEMREG6 with accession number KP406731. Likewise, the 16S rDNA nucleotide sequences of isolates M69 and M67 showed 98 percent sequence similarity to Bacillus licheniformis strain W7 and Bacillus algicola strain QD43 respectively; and M67 isolate was subsequently deposited in the GenBank as Bacillus sp. AEMREG7 with accession number KF933697.1. The results of the nutritional requirements and fermentation conditions revealed that optimum inoculum size for REG-6 production was 4 percent (v/v), while 5 percent (v/v) and 3 percent (v/v) were most favourable for MBF-W7 and MBF-UFH production respectively. Glucose was the best carbon source for the production of bioflocculants (REG-6 and MBF-UFH) by Bacillus toyonensis AEMREG6 and Bacillus sp. AEMREG7 respectively, while maltose supported optimum bioflocculant (MBF-W7) production by Bacillus specie. Inorganic nitrogen (NH4NO3) was the favoured nitrogen source for both REG-6 and MBF-W7 production, while mixed nitrogen sources [yeast extract + urea + (NH4)2SO4] supported the maximum production of MBF-UFH. The initial medium pH for REG-6 was 5, while MBF-W7 and MBF-UFH were both maximally produced at the initial pH of 6. After a 96 h cultivation period under optimal culture conditions, 3.2 g of purified REG-6 with a maximum flocculating activity of 77 percent was recovered from 1 L fermented broth of Bacillus toyonensis AEMREG6. Yields of 3.8 g and 1.6 g pure bioflocculants with the respective highest flocculating activities of 94.9 percent and 83.2 percent were also obtained from 1 L, 72 h-fermented broths of Bacillus licheniformis and Bacillus sp. AEMREG7 respectively. Furthermore, all the three bioflocculants (REG-6, MBF-W7 and MBF-UFH), displayed thermal stability within the temperature range of 50 to 100 oC, with strong flocculating activities of over 80 percent against kaolin suspension over a wide range of pH range (3–11) and relatively low dosage requirements of 0.1-03 mg/ml in the presence of divalent cations in the treatment of kaolin clay suspension and Thyme River waters. Chemical composition analyses of the bioflocculants showed them to be glycoproteins with a predominantly polysaccharide backbones as shown by the following carbohydrate/protein (w/w) ratios: 77.8 percent:11.5 percent (REG-6); 73.7 percent:6.2 percent (MBF-W7) and 76 percent:14 percent (MBF-UFH).
- Full Text:
- Date Issued: 2016
- Authors: Okaiyeto, Kunle
- Date: 2016
- Subjects: Flocculation Water -- Purification -- Flocculation Water quality management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2633 , vital:27947
- Description: Flocculation has been widely adopted as one of the most effective methods to remove colloidal particles in water or wastewater treatment. Synthetic flocculants are conventionally used because of their high flocculating efficiency and cost-effectiveness. However, they have been reported to have hazardous properties and implicated in some serious health problems including senile dementia and neuro-toxicity, as well as being recalcitrant in the environment. Consequently, efforts are being geared away from the use of synthetic flocculants in water and wastewater treatment. Hence, the need for safe and eco-friendly flocculants has become imperative. Compared with synthetic flocculants, bioflocculants have special advantages such as safety, biodegradability and harmlessness to the environment and humans; attributes which make them potential alternatives in water treatment, downstream as well as fermentation processes. In the current study, the potentials of bacterial isolates recovered from Algoa Bay in the Eastern Cape Province of South Africa for bioflocculant production were investigated. The bacterial isolates were identified by polymerase chain reaction (PCR) as belonging to the Bacillus genus. The analysis of 16S ribosomal deoxyribonucleic acid (rDNA) nucleotide sequence of isolate M72 showed 99 percent similarity to Bacillus toyonensis strain BCT-7112 and was deposited in the GenBank as Bacillus toyonensis strain AEMREG6 with accession number KP406731. Likewise, the 16S rDNA nucleotide sequences of isolates M69 and M67 showed 98 percent sequence similarity to Bacillus licheniformis strain W7 and Bacillus algicola strain QD43 respectively; and M67 isolate was subsequently deposited in the GenBank as Bacillus sp. AEMREG7 with accession number KF933697.1. The results of the nutritional requirements and fermentation conditions revealed that optimum inoculum size for REG-6 production was 4 percent (v/v), while 5 percent (v/v) and 3 percent (v/v) were most favourable for MBF-W7 and MBF-UFH production respectively. Glucose was the best carbon source for the production of bioflocculants (REG-6 and MBF-UFH) by Bacillus toyonensis AEMREG6 and Bacillus sp. AEMREG7 respectively, while maltose supported optimum bioflocculant (MBF-W7) production by Bacillus specie. Inorganic nitrogen (NH4NO3) was the favoured nitrogen source for both REG-6 and MBF-W7 production, while mixed nitrogen sources [yeast extract + urea + (NH4)2SO4] supported the maximum production of MBF-UFH. The initial medium pH for REG-6 was 5, while MBF-W7 and MBF-UFH were both maximally produced at the initial pH of 6. After a 96 h cultivation period under optimal culture conditions, 3.2 g of purified REG-6 with a maximum flocculating activity of 77 percent was recovered from 1 L fermented broth of Bacillus toyonensis AEMREG6. Yields of 3.8 g and 1.6 g pure bioflocculants with the respective highest flocculating activities of 94.9 percent and 83.2 percent were also obtained from 1 L, 72 h-fermented broths of Bacillus licheniformis and Bacillus sp. AEMREG7 respectively. Furthermore, all the three bioflocculants (REG-6, MBF-W7 and MBF-UFH), displayed thermal stability within the temperature range of 50 to 100 oC, with strong flocculating activities of over 80 percent against kaolin suspension over a wide range of pH range (3–11) and relatively low dosage requirements of 0.1-03 mg/ml in the presence of divalent cations in the treatment of kaolin clay suspension and Thyme River waters. Chemical composition analyses of the bioflocculants showed them to be glycoproteins with a predominantly polysaccharide backbones as shown by the following carbohydrate/protein (w/w) ratios: 77.8 percent:11.5 percent (REG-6); 73.7 percent:6.2 percent (MBF-W7) and 76 percent:14 percent (MBF-UFH).
- Full Text:
- Date Issued: 2016
Management of material waste and cost overrun in the Nigerian construction industry
- Authors: Saidu, Ibrahim
- Date: 2016
- Subjects: Construction industry -- Materials management -- Nigeria , Construction industry -- Nigeria -- Management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/3792 , vital:20463
- Description: While wastage of materials has become a serious problem requiring urgent attention in the Nigerian Construction Industry, cost overrun is a problem, which affects 90 percent of the completed projects in the world; the argument on how to reduce/eliminate cost overrun has been on-going for the past 70 years; as the on-site wastage of materials leads to increases in the final project cost. Studies from different parts of the world have shown that construction-material waste represents a relatively large percentage of the production costs. Consequently, as a result of low levels of awareness, the Nigerian construction industry pays little attention to the effects of generated material waste on cost overruns. Thus, this research aimed to investigate the relationship between material waste and cost overrun in the Nigerian construction industry. A comprehensive review of the related literature revealed that all material waste causes are related to cost overrun causes at both pre-contract and post-contract stages of a project; but not vice versa. The mixed method (quantitative and qualitative) approach that is rooted in the positivist paradigm was adopted for this study. Abuja, the federal capital territory of Nigeria was the selected geographical scope of this research, out of which thirty-one (31) construction projects were purposeful selected (projects to the value of 100 million Rand/1.6 billion Naira and above).The research instrument was an interview guide used in conjunction with a tick box. Other sources of data included field investigation (measurement of onsite material waste) and the collection of archival records from bills of quantities, project records, and specifications. Analyses of the findings lead to the conclusion that a relationship exists between material waste and cost overrun; at the pre-contract and at the post-contract stages of a project. The implication is that an increase in material wastage on-site leads to a corresponding increase in the amount of cost overrun, regardless of the percentage allowance for material waste in the process of bill preparation. The study also concluded that the average percentage contribution of material waste to project-cost overruns is four (4) percent. Material-waste sources, causes, and control measures were found to have significant effects (very high, high, medium, low, and very low), in causing or minimising cost overruns at both pre-contract and post-contract stages of projects. The research has developed a conceptual model for the management of material waste and cost overruns in the construction industry based on the results and informed by the theoretical framework. The research has also developed a mathematical model for quantifying the amount of material waste to be generated by a project; as well as a mathematical equation for the effective management of material waste and cost overrun for projects. The study has achieved its aim of establishing an understanding of the issues leading to the relationship between material waste and cost overruns, as well as their management in the Nigerian construction industry. The study recommends that the management of material waste and cost overrun should be revised, based on the findings of this research and included as part of the procurement process. The mathematical models for quantification of onsite material waste, and the mathematical equation for managing material waste and cost overruns developed in the study, could be usefully adopted to improve management of material waste and cost overrun in the Nigerian construction industry.
- Full Text:
- Date Issued: 2016
- Authors: Saidu, Ibrahim
- Date: 2016
- Subjects: Construction industry -- Materials management -- Nigeria , Construction industry -- Nigeria -- Management
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/3792 , vital:20463
- Description: While wastage of materials has become a serious problem requiring urgent attention in the Nigerian Construction Industry, cost overrun is a problem, which affects 90 percent of the completed projects in the world; the argument on how to reduce/eliminate cost overrun has been on-going for the past 70 years; as the on-site wastage of materials leads to increases in the final project cost. Studies from different parts of the world have shown that construction-material waste represents a relatively large percentage of the production costs. Consequently, as a result of low levels of awareness, the Nigerian construction industry pays little attention to the effects of generated material waste on cost overruns. Thus, this research aimed to investigate the relationship between material waste and cost overrun in the Nigerian construction industry. A comprehensive review of the related literature revealed that all material waste causes are related to cost overrun causes at both pre-contract and post-contract stages of a project; but not vice versa. The mixed method (quantitative and qualitative) approach that is rooted in the positivist paradigm was adopted for this study. Abuja, the federal capital territory of Nigeria was the selected geographical scope of this research, out of which thirty-one (31) construction projects were purposeful selected (projects to the value of 100 million Rand/1.6 billion Naira and above).The research instrument was an interview guide used in conjunction with a tick box. Other sources of data included field investigation (measurement of onsite material waste) and the collection of archival records from bills of quantities, project records, and specifications. Analyses of the findings lead to the conclusion that a relationship exists between material waste and cost overrun; at the pre-contract and at the post-contract stages of a project. The implication is that an increase in material wastage on-site leads to a corresponding increase in the amount of cost overrun, regardless of the percentage allowance for material waste in the process of bill preparation. The study also concluded that the average percentage contribution of material waste to project-cost overruns is four (4) percent. Material-waste sources, causes, and control measures were found to have significant effects (very high, high, medium, low, and very low), in causing or minimising cost overruns at both pre-contract and post-contract stages of projects. The research has developed a conceptual model for the management of material waste and cost overruns in the construction industry based on the results and informed by the theoretical framework. The research has also developed a mathematical model for quantifying the amount of material waste to be generated by a project; as well as a mathematical equation for the effective management of material waste and cost overrun for projects. The study has achieved its aim of establishing an understanding of the issues leading to the relationship between material waste and cost overruns, as well as their management in the Nigerian construction industry. The study recommends that the management of material waste and cost overrun should be revised, based on the findings of this research and included as part of the procurement process. The mathematical models for quantification of onsite material waste, and the mathematical equation for managing material waste and cost overruns developed in the study, could be usefully adopted to improve management of material waste and cost overrun in the Nigerian construction industry.
- Full Text:
- Date Issued: 2016
The development of a counselling intervention for people living HIV and AIDS experiencing stress-related psychological conditions in the Eastern Cape province
- Authors: Twaise, Nomvula Virginia
- Date: 2016
- Subjects: AIDS (Disease) -- Patients -- Counseling of -- South Africa -- Eastern Cape , HIV-positive persons -- Counseling of -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/7927 , vital:24322
- Description: People living with HIV and AIDS (PLHIV) suffer from a number of stress-related psychological disorders. The aim of this study was to develop an integrative intervention, which combined Cognitive Behaviour Therapy (CBT), Body-Mind Therapy and Multicultural perspectives to assist health care workers in identifying and treating stressrelated psychological disorders among people living with HIV and AIDS. The study employed an intervention research design using both qualitative and quantitative methods. The quantitative data was collected from PLHIV attending HIV Counselling and Testing (HCT) and Anti-retroviral therapy clinics in the Buffalo City Municipality (BCM) of the Eastern Cape Province. The qualitative data was collected from the health care workers of the selected study sites. Purposive sampling was used to select the study sample. Instruments used included a biographical questionnaire, the Beck Depression Inventory-II (BDI-II), Medical Outcome Study- HIV (MOS-HIV) and focus group interviews to gather data for the development of an intervention model that would address reported stress-related psychological disorders. Findings showed that people living with HIV and AIDS endure stress in their lives on daily basis rather than episodes of severe or clinical depression. Many of the PLHIV are dealing with a number of psychosocial problems that compromise their quality of life and health status. In conclusion, the study illustratively interpreted and discussed the results in relation to the objectives of the study. The study recommends that PLHIV should be exposed to stress management programmes, and health care workers (HCWs) should be offered training in basic counselling skills, stress management and/or debriefing.
- Full Text:
- Date Issued: 2016
- Authors: Twaise, Nomvula Virginia
- Date: 2016
- Subjects: AIDS (Disease) -- Patients -- Counseling of -- South Africa -- Eastern Cape , HIV-positive persons -- Counseling of -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/7927 , vital:24322
- Description: People living with HIV and AIDS (PLHIV) suffer from a number of stress-related psychological disorders. The aim of this study was to develop an integrative intervention, which combined Cognitive Behaviour Therapy (CBT), Body-Mind Therapy and Multicultural perspectives to assist health care workers in identifying and treating stressrelated psychological disorders among people living with HIV and AIDS. The study employed an intervention research design using both qualitative and quantitative methods. The quantitative data was collected from PLHIV attending HIV Counselling and Testing (HCT) and Anti-retroviral therapy clinics in the Buffalo City Municipality (BCM) of the Eastern Cape Province. The qualitative data was collected from the health care workers of the selected study sites. Purposive sampling was used to select the study sample. Instruments used included a biographical questionnaire, the Beck Depression Inventory-II (BDI-II), Medical Outcome Study- HIV (MOS-HIV) and focus group interviews to gather data for the development of an intervention model that would address reported stress-related psychological disorders. Findings showed that people living with HIV and AIDS endure stress in their lives on daily basis rather than episodes of severe or clinical depression. Many of the PLHIV are dealing with a number of psychosocial problems that compromise their quality of life and health status. In conclusion, the study illustratively interpreted and discussed the results in relation to the objectives of the study. The study recommends that PLHIV should be exposed to stress management programmes, and health care workers (HCWs) should be offered training in basic counselling skills, stress management and/or debriefing.
- Full Text:
- Date Issued: 2016
Perceived decision making factors in the use of traditional and alternative medicine for people living with HIV and AIDS
- Authors: Muromo, Tinashe
- Date: 2016
- Subjects: Decision making , HIV-positive persons -- Attitudes , Social influence
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/5687 , vital:20963
- Description: AIDS is one of the most destructive diseases humankind has ever faced and also brings with it profound social, economic and public health consequences, making it one of the most serious health and development challenges in the world today. Zimbabwe, situated in southeastern Africa, is not spared from the pandemic. It continues to be one of the Sub-SaharanAfrican countries mostly heavily impacted by the AIDS epidemic, with almost 1.2 million people infected and over 1.1 million orphans. It ranks, therefore, as fifth highest in the world in the impact HIV and AIDS has had on the country. The most effective response has been to introduce programmes to reduce the number of new infections. Recent research has demonstrated treatment as a preventative measure to be very effective. This approach involves targeting those who are infected so that they are not able to transmit the disease. The decision that has to be made by an infected person, however, is whether to look for traditional treatment, conventional treatment or a combination of the two. Herbal medicine use is becoming very common in many countries, especially in the developing world, where public health safety has become a concern. It has become common to use herbal medicine concomitantly with allopathic or conventional medicine. The present study focused on investigating perceptions leading to the choice of treatment with the traditional alternative medicines (TAM) as (a)/n alternative or compliment to the conventional or allopathic option. This is a qualitative study that explores and describes participant’s perceptions, beliefs, attitudes and feelings around the use of traditional medicine, within the context of the Integrative Behaviour Model (IBM). Data was collected from 20 people living with HIV and AIDS from urban and rural settings of different ethnicities (Shona and Shangani). The data analysis was informed by The Interpretive Phenomenological Analysis with the aid of NVivo (V.10), a computer-assisted Qualitative Data Analysis Software. As predicted by the IBM, both perceived individual and environmental factors were found to be key in influencing decision-making on the use of TAM by people living with HIV and AIDS. Although there were a number of incidents in which either individual or environmental factors were perceived as independently influencing the TAM-use decision-making process, there was a lot of mutual influence between the environment and the individual. Such mutual causation was abstracted as reciprocal determinism. The IMB model assumed a unidirectional causation in which the environment could affect the individual factors. While the present study identified and demonstrated these environmental effects on the individual, it also identified and presented a reverse causation in which the individual would also affect the environment with respect to motivation for TAM use. Individual factors were psychological properties that drove the individual to use TAM. Attitude, social influence and personal agency emerged as the three dimensions of individual factors. Attitudes helped in identification of orientations that located objects of thought on dimensions of judgment about the use of TAM. Social influence explained social pressure experienced and expected regarding the use of TAM. The study demonstrated the importance of both the descriptive and injunctive norm with participants indicating that they perceived important others to be using traditional medicine and that they felt perceived expectations from others to do the same and hence the motivation to comply. Personal agency pointed to the participants’ capacities to originate and direct actions for the purposes of TAM use. All these constructs were found to be very important as perceived determinants of the behavioral intentions of people living with HIV and AIDS to use traditional medicines. In experiential attitude, generally the respondents showed more perceived positive evaluations of pleasurable experiences in their use of traditional medicines. However, there were other outcome evaluations that seemed to be ambivalent and which appeared to cause a lot of tension. The comprehension of experiential attitude was found therefore found to be trichotomous rather than dichotomous as per the IBM. The effects of the instrumental attitude were revealed in the ratings of the extent to which the use of traditional medicine was perceived as useful or rewarding, with the study revealing high ratings of usefulness. It becomes clear, therefore, that for people living with HIV and AIDS social influence, perceived attitudes and personal agency are important decision-making factors in their use of traditional and alternative medicine. Efforts towards education, integration and behaviour change programmes should design messages targeting these behavioral determinants. Understanding of these perceived determinants is crucial to influencing policy as well as the adoption of health practices through education, marketing and other modes of health promotion.
- Full Text:
- Date Issued: 2016
- Authors: Muromo, Tinashe
- Date: 2016
- Subjects: Decision making , HIV-positive persons -- Attitudes , Social influence
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/5687 , vital:20963
- Description: AIDS is one of the most destructive diseases humankind has ever faced and also brings with it profound social, economic and public health consequences, making it one of the most serious health and development challenges in the world today. Zimbabwe, situated in southeastern Africa, is not spared from the pandemic. It continues to be one of the Sub-SaharanAfrican countries mostly heavily impacted by the AIDS epidemic, with almost 1.2 million people infected and over 1.1 million orphans. It ranks, therefore, as fifth highest in the world in the impact HIV and AIDS has had on the country. The most effective response has been to introduce programmes to reduce the number of new infections. Recent research has demonstrated treatment as a preventative measure to be very effective. This approach involves targeting those who are infected so that they are not able to transmit the disease. The decision that has to be made by an infected person, however, is whether to look for traditional treatment, conventional treatment or a combination of the two. Herbal medicine use is becoming very common in many countries, especially in the developing world, where public health safety has become a concern. It has become common to use herbal medicine concomitantly with allopathic or conventional medicine. The present study focused on investigating perceptions leading to the choice of treatment with the traditional alternative medicines (TAM) as (a)/n alternative or compliment to the conventional or allopathic option. This is a qualitative study that explores and describes participant’s perceptions, beliefs, attitudes and feelings around the use of traditional medicine, within the context of the Integrative Behaviour Model (IBM). Data was collected from 20 people living with HIV and AIDS from urban and rural settings of different ethnicities (Shona and Shangani). The data analysis was informed by The Interpretive Phenomenological Analysis with the aid of NVivo (V.10), a computer-assisted Qualitative Data Analysis Software. As predicted by the IBM, both perceived individual and environmental factors were found to be key in influencing decision-making on the use of TAM by people living with HIV and AIDS. Although there were a number of incidents in which either individual or environmental factors were perceived as independently influencing the TAM-use decision-making process, there was a lot of mutual influence between the environment and the individual. Such mutual causation was abstracted as reciprocal determinism. The IMB model assumed a unidirectional causation in which the environment could affect the individual factors. While the present study identified and demonstrated these environmental effects on the individual, it also identified and presented a reverse causation in which the individual would also affect the environment with respect to motivation for TAM use. Individual factors were psychological properties that drove the individual to use TAM. Attitude, social influence and personal agency emerged as the three dimensions of individual factors. Attitudes helped in identification of orientations that located objects of thought on dimensions of judgment about the use of TAM. Social influence explained social pressure experienced and expected regarding the use of TAM. The study demonstrated the importance of both the descriptive and injunctive norm with participants indicating that they perceived important others to be using traditional medicine and that they felt perceived expectations from others to do the same and hence the motivation to comply. Personal agency pointed to the participants’ capacities to originate and direct actions for the purposes of TAM use. All these constructs were found to be very important as perceived determinants of the behavioral intentions of people living with HIV and AIDS to use traditional medicines. In experiential attitude, generally the respondents showed more perceived positive evaluations of pleasurable experiences in their use of traditional medicines. However, there were other outcome evaluations that seemed to be ambivalent and which appeared to cause a lot of tension. The comprehension of experiential attitude was found therefore found to be trichotomous rather than dichotomous as per the IBM. The effects of the instrumental attitude were revealed in the ratings of the extent to which the use of traditional medicine was perceived as useful or rewarding, with the study revealing high ratings of usefulness. It becomes clear, therefore, that for people living with HIV and AIDS social influence, perceived attitudes and personal agency are important decision-making factors in their use of traditional and alternative medicine. Efforts towards education, integration and behaviour change programmes should design messages targeting these behavioral determinants. Understanding of these perceived determinants is crucial to influencing policy as well as the adoption of health practices through education, marketing and other modes of health promotion.
- Full Text:
- Date Issued: 2016
Gender equality in the provision and utilisation of women administrative personnel : a comparative study of the Camdeboo Local Municipality and Inxuba Yethemba Local Municipality
- Authors: Dywili, Mhlobo Douglas
- Date: 2016
- Subjects: Women -- Government policy -- South Africa -- Eastern Cape Sex discrimination against women -- South Africa -- Eastern Cape Women's rights -- South Africa -- Eastern Cape , Equality -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2414 , vital:27817
- Description: In 2000, cabinet adopted the South African Policy framework for women’s empowerment and gender equality, 2000 (Policy framework) which provided for the establishment of the National Gender Machinery (NGM). The NGM is a network of coordinated structures within and outside government which operate cooperatively in facilitating political, social, economic and other forms of transformation to dismantle systemic gender inequality and promote equality between women and men. The implementation of gender equality policy as a function area has constitutionally been given to the national and provincial legislatures in South Africa. The constitution allocated this function to the local sphere of government. Camdeboo and Inxuba Yethemba local municipal authorities are the facilitators of sustainable gender equality policies to citizens on behalf of the national and provincial spheres of government. The study was thus conducted within the Camdeboo local municipality and Inxuba Yethemba local municipality. Camdeboo locoal municipality is one of nine local municipalities in Sarah Baartman district municipality. Inxuba Yethemba local municipality is in Chris Hani district municipality. The purpose of the study was to evaluate the implementation of gender equality in the Provision and Utilisation of Women administration Personnel a comparative study of the Camdeboo local municipality and the Inxuba Yethemba local municipality and to determine the impact of the existing policy on the gender equality policy on the needs of women of both municipalities. For this purpose the fundamental and overall study problem was found to be that the gender equality at the Camdeboo and Inxuba Yethemba is hampered by the implementation of an inadequate municipality gender equality policy and by incompetent municipal personnel in particular and in general by the municipality itself. These action do not satisfy the main purpose of the Employment Equity Act no 55 of 1998 to achieve in the workplace by promoting equal opportunity and fair treatment in all forms of employment through elimination of unfair discrimination as well as the implementation of affirmative action measures. The hypothesis was furthermore based on the fact that the existing gender policy of Camdeboo local municipality and Inxuba Yethemba local municipality gender equality policy are inadequate to satisfy women and impacts negatively if not harmfully on human being of women. The study revealed that besides the implementation of gender equality policy by these incompetent municipal personnel, there are economic, social, political and physical effects on women. In case of applications for senior management position, preference is always given to their male counterparts at the expense of equally qualified female applications. Secondly, Gender equality in human resource determination forms part of the processing phase in the system theory. These two municipalities should be made to commit themselves by appending their signatures to all control measures put in place to evaluate the level and the extent of gender equality across all the departments/ sections in the municipality. Any section/ department that implements gender equality more effectively should be identified applauded and given recognition. This would motivate and eliminate gender inequality. Personnel provision and utilization is of paramount importance to every organization. It then becomes extremely necessary to examine the gender equality on human resource determination.
- Full Text:
- Date Issued: 2016
- Authors: Dywili, Mhlobo Douglas
- Date: 2016
- Subjects: Women -- Government policy -- South Africa -- Eastern Cape Sex discrimination against women -- South Africa -- Eastern Cape Women's rights -- South Africa -- Eastern Cape , Equality -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2414 , vital:27817
- Description: In 2000, cabinet adopted the South African Policy framework for women’s empowerment and gender equality, 2000 (Policy framework) which provided for the establishment of the National Gender Machinery (NGM). The NGM is a network of coordinated structures within and outside government which operate cooperatively in facilitating political, social, economic and other forms of transformation to dismantle systemic gender inequality and promote equality between women and men. The implementation of gender equality policy as a function area has constitutionally been given to the national and provincial legislatures in South Africa. The constitution allocated this function to the local sphere of government. Camdeboo and Inxuba Yethemba local municipal authorities are the facilitators of sustainable gender equality policies to citizens on behalf of the national and provincial spheres of government. The study was thus conducted within the Camdeboo local municipality and Inxuba Yethemba local municipality. Camdeboo locoal municipality is one of nine local municipalities in Sarah Baartman district municipality. Inxuba Yethemba local municipality is in Chris Hani district municipality. The purpose of the study was to evaluate the implementation of gender equality in the Provision and Utilisation of Women administration Personnel a comparative study of the Camdeboo local municipality and the Inxuba Yethemba local municipality and to determine the impact of the existing policy on the gender equality policy on the needs of women of both municipalities. For this purpose the fundamental and overall study problem was found to be that the gender equality at the Camdeboo and Inxuba Yethemba is hampered by the implementation of an inadequate municipality gender equality policy and by incompetent municipal personnel in particular and in general by the municipality itself. These action do not satisfy the main purpose of the Employment Equity Act no 55 of 1998 to achieve in the workplace by promoting equal opportunity and fair treatment in all forms of employment through elimination of unfair discrimination as well as the implementation of affirmative action measures. The hypothesis was furthermore based on the fact that the existing gender policy of Camdeboo local municipality and Inxuba Yethemba local municipality gender equality policy are inadequate to satisfy women and impacts negatively if not harmfully on human being of women. The study revealed that besides the implementation of gender equality policy by these incompetent municipal personnel, there are economic, social, political and physical effects on women. In case of applications for senior management position, preference is always given to their male counterparts at the expense of equally qualified female applications. Secondly, Gender equality in human resource determination forms part of the processing phase in the system theory. These two municipalities should be made to commit themselves by appending their signatures to all control measures put in place to evaluate the level and the extent of gender equality across all the departments/ sections in the municipality. Any section/ department that implements gender equality more effectively should be identified applauded and given recognition. This would motivate and eliminate gender inequality. Personnel provision and utilization is of paramount importance to every organization. It then becomes extremely necessary to examine the gender equality on human resource determination.
- Full Text:
- Date Issued: 2016
Exploration of Nahoon beach milieu for lignocellulose degrading bacteria and optimizing fermentation conditions for holocellulase production by selected strains
- Authors: Fatokun, Evelyn
- Date: 2016
- Subjects: Lignocellulose Lignocellulose -- Biodegradation Water -- Purification -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/1529 , vital:27413
- Description: A significant trend in the modern day industrial biotechnology is the utilization and application of renewable resources, and ecofriendly approach to industrial processes and waste management. As a consequence thereof, the biotechnology of holocellulases: cellulase and xylanase and, enzymatic hydrolysis of renewable and abundant lignocellulosic biomass to energy and value added products are rapidly increasing; hence, cost effective enzyme system is imperative. In that context, exploration of microbiota for strains and enzymes with novel industrial properties is vital for efficient and commercially viable enzyme biotechnology. Consequent on the complex characteristics of high salinity, variable pressure, temperature and nutritional conditions, bacterial strains from the marine environment are equipped with enzyme machinery of industrial importance for adaptation and survival. In this study, bacterial strains were isolated form Nahoon beach and optimized for holocellulase production. Three isolates selected for lignocellulolytic potential were identified by 16S ribosomal deoxyribonucleic acid (rDNA) sequence analysis. Isolate FS1k had 98 percent similarity with Streptomyces albidoflavus strain AIH12, was designated as Streptomyces albidoflavus strain SAMRC-UFH5 and deposited in the GenBank with accession number KU171373. Similarly, isolates CS14b and CS22d with respective percentage similarity of 98 and 99 (percent) with Bacillus cereus strains and Streptomyces sp. strain WMMB251 were named Bacillus cereus strain SAMRC-UFH9 and Streptomyces sp. strain SAMRC-UFH6; and were deposited in the GenBank with accession number KX524510 and KU171374 respectively. Optimal pH, temperature and agitation speed for cellulase production by S. albidoflavus strain SAMRC-UFH5, and B. cereus strain SAMRC-UFH9 were 6 and 7; 40 and 30 (°C); and 100 and 150 (rpm) respectively; while xylanase production was optimal at pH, temperature and agitation speed of 8 and 7; 40 and 30 (°C); and 150 and 50 (rpm) respectively. Maximum cellulase activity of 0.26 and 0.061(U/mL) by S. albidoflavus strain SAMRC-UFH5 and B. cereus strain SAMRC-UFH9 were attained at 60 h respectively, while maximal xylanase activity of 18.54 and 16.6 (U/mL) was produced by S. albidoflavus strain SAMRC-UFH5 and B. cereus strain SAMRC-UFH9 at 48 h and 60 h respectively. Furthermore, xylanase production by S. albidoflavus strain SAMRC-UFH5 and B. cereus strain SAMRC-UFH9 was maximally induced by wheat straw and xylan respectively, while cellulase production was best induced by mannose and carboxymethyl cellulose respectively. On the other hand, cellulase and xylanase production by Streptomyces sp. strain SAMRC-UFH6 was optimal at pH, temperature and agitation speed of 7 and 8, 40 °C and 100 rpm, respectively. Highest production of cellulase and xylanase was attained at 84 and 60 h with respective activity of 0.065 and 6.34 (U/mL). In addition, cellulase and xylanase production by the strain was best induced by beechwood xylan. Moreover, xylanase produced by Streptomyces sp. strain SAMRC-UFH6 at optimal conditions was characterized by optimal pH and temperature of 8 and 80-90 °C respectively; retaining over 70 percent activity at pH 5-10 after 1 h and 60 percent of initial activity at 90 °C after 90 min of incubation. In all, optimization improved cellulase and xylanase production yields, being 40 and 95.5, 10.89 and 72.17, and 10 and 115- fold increase by S. albidoflavus strain SAMRC-UFH5, B. cereus strain SAMRC-UFH9 and Streptomyces sp. SAMRC-UFH6 respectively. The results of this study suggest that the marine bacterial strains are resource for holocellulase with industrial applications.
- Full Text:
- Date Issued: 2016
- Authors: Fatokun, Evelyn
- Date: 2016
- Subjects: Lignocellulose Lignocellulose -- Biodegradation Water -- Purification -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/1529 , vital:27413
- Description: A significant trend in the modern day industrial biotechnology is the utilization and application of renewable resources, and ecofriendly approach to industrial processes and waste management. As a consequence thereof, the biotechnology of holocellulases: cellulase and xylanase and, enzymatic hydrolysis of renewable and abundant lignocellulosic biomass to energy and value added products are rapidly increasing; hence, cost effective enzyme system is imperative. In that context, exploration of microbiota for strains and enzymes with novel industrial properties is vital for efficient and commercially viable enzyme biotechnology. Consequent on the complex characteristics of high salinity, variable pressure, temperature and nutritional conditions, bacterial strains from the marine environment are equipped with enzyme machinery of industrial importance for adaptation and survival. In this study, bacterial strains were isolated form Nahoon beach and optimized for holocellulase production. Three isolates selected for lignocellulolytic potential were identified by 16S ribosomal deoxyribonucleic acid (rDNA) sequence analysis. Isolate FS1k had 98 percent similarity with Streptomyces albidoflavus strain AIH12, was designated as Streptomyces albidoflavus strain SAMRC-UFH5 and deposited in the GenBank with accession number KU171373. Similarly, isolates CS14b and CS22d with respective percentage similarity of 98 and 99 (percent) with Bacillus cereus strains and Streptomyces sp. strain WMMB251 were named Bacillus cereus strain SAMRC-UFH9 and Streptomyces sp. strain SAMRC-UFH6; and were deposited in the GenBank with accession number KX524510 and KU171374 respectively. Optimal pH, temperature and agitation speed for cellulase production by S. albidoflavus strain SAMRC-UFH5, and B. cereus strain SAMRC-UFH9 were 6 and 7; 40 and 30 (°C); and 100 and 150 (rpm) respectively; while xylanase production was optimal at pH, temperature and agitation speed of 8 and 7; 40 and 30 (°C); and 150 and 50 (rpm) respectively. Maximum cellulase activity of 0.26 and 0.061(U/mL) by S. albidoflavus strain SAMRC-UFH5 and B. cereus strain SAMRC-UFH9 were attained at 60 h respectively, while maximal xylanase activity of 18.54 and 16.6 (U/mL) was produced by S. albidoflavus strain SAMRC-UFH5 and B. cereus strain SAMRC-UFH9 at 48 h and 60 h respectively. Furthermore, xylanase production by S. albidoflavus strain SAMRC-UFH5 and B. cereus strain SAMRC-UFH9 was maximally induced by wheat straw and xylan respectively, while cellulase production was best induced by mannose and carboxymethyl cellulose respectively. On the other hand, cellulase and xylanase production by Streptomyces sp. strain SAMRC-UFH6 was optimal at pH, temperature and agitation speed of 7 and 8, 40 °C and 100 rpm, respectively. Highest production of cellulase and xylanase was attained at 84 and 60 h with respective activity of 0.065 and 6.34 (U/mL). In addition, cellulase and xylanase production by the strain was best induced by beechwood xylan. Moreover, xylanase produced by Streptomyces sp. strain SAMRC-UFH6 at optimal conditions was characterized by optimal pH and temperature of 8 and 80-90 °C respectively; retaining over 70 percent activity at pH 5-10 after 1 h and 60 percent of initial activity at 90 °C after 90 min of incubation. In all, optimization improved cellulase and xylanase production yields, being 40 and 95.5, 10.89 and 72.17, and 10 and 115- fold increase by S. albidoflavus strain SAMRC-UFH5, B. cereus strain SAMRC-UFH9 and Streptomyces sp. SAMRC-UFH6 respectively. The results of this study suggest that the marine bacterial strains are resource for holocellulase with industrial applications.
- Full Text:
- Date Issued: 2016
The voice of the child in parental divorce: a narrative inquiry
- Authors: Brand, Carrie
- Date: 2016
- Subjects: Conversation analysis , Children of divorced parents , Divorced parents
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8923 , vital:26443
- Description: Parental divorce is considered one of the most stressful events in the lives of children. The adult perspective has dominated the discourse on divorce, and only recently has research started to consider the viewpoint of children. Research indicates that the nature of the divorce process as experienced by the child is the most important factor in post-divorce adjustment. It also remains a relatively unexplored area, with research on the manner in which children experience the divorce process being limited. The current study aimed to conduct a narrative inquiry into the experiences and perceptions of parental divorce, of a purposive sample of 9 to 10 year old children. The primary aim of the study was to highlight and honour the voice of the child in a parental divorce process. The current research was qualitative in nature and adopted a narrative paradigm. Five children were interviewed qualitatively using an unstructured interview. Data were analysed using thematic analysis. Seven themes were identified. The first theme explored children’s endeavours to describe and explain parental divorce. An additional six themes were developed around the types of stories children told of the divorce process. Themes included, What is a Divorcement, Stories of Loss, Stories of Gain, Stories of Change, Stories of Stability, Healing Stories, and Complicating Stories. This study endeavoured to provide divorced parents and those working with children a greater understanding of the way in which children perceive parental divorce, and insight into the factors that facilitate children’s positive adjustment to parental divorce.
- Full Text:
- Date Issued: 2016
- Authors: Brand, Carrie
- Date: 2016
- Subjects: Conversation analysis , Children of divorced parents , Divorced parents
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8923 , vital:26443
- Description: Parental divorce is considered one of the most stressful events in the lives of children. The adult perspective has dominated the discourse on divorce, and only recently has research started to consider the viewpoint of children. Research indicates that the nature of the divorce process as experienced by the child is the most important factor in post-divorce adjustment. It also remains a relatively unexplored area, with research on the manner in which children experience the divorce process being limited. The current study aimed to conduct a narrative inquiry into the experiences and perceptions of parental divorce, of a purposive sample of 9 to 10 year old children. The primary aim of the study was to highlight and honour the voice of the child in a parental divorce process. The current research was qualitative in nature and adopted a narrative paradigm. Five children were interviewed qualitatively using an unstructured interview. Data were analysed using thematic analysis. Seven themes were identified. The first theme explored children’s endeavours to describe and explain parental divorce. An additional six themes were developed around the types of stories children told of the divorce process. Themes included, What is a Divorcement, Stories of Loss, Stories of Gain, Stories of Change, Stories of Stability, Healing Stories, and Complicating Stories. This study endeavoured to provide divorced parents and those working with children a greater understanding of the way in which children perceive parental divorce, and insight into the factors that facilitate children’s positive adjustment to parental divorce.
- Full Text:
- Date Issued: 2016
Investigating emerging deleuzoguattarian connections to the environment via information technology
- Authors: Siwak, Jakub
- Date: 2016
- Subjects: Mass media and the environment , Neoliberalism
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8329 , vital:26343
- Description: This thesis explores whether or not it is possible to positively inflect – via digital means – people’s orientations toward nature through connecting their duration to the time of animals. The thesis opens with an overview of the contemporary environmental crisis, mapping related significant discourses, events and responses from the early 1960s onward. In this regard, after thematizing the relatively ineffective global institutional response to the environmental crisis to date – in spite of both consistent criticisms proffered by a range of stakeholders and widely available information on the scope of current environmental degradation – the lack of any concerted effort to deal with this issue is accounted for in terms of the dimensions of what Kilbourne, Beckmann and Thelen refer to as the ‘Dominant Social Paradigm’ (DSP). However, it is argued that of these dimensions, the technological dimension is most amenable to pro-environmental inflection, particularly through recent developments within information technology. That is, despite the latter being the privileged technology of neoliberalism, and despite the environmental cost of its current material infrastructure, it is also highly unlikely that societies will abandon their dependence on information technology in the near future. Given this, the importance of considering how such technology can be harnessed to positively re-orientate users’ perceptions of the natural world, in a way that also avoids the pitfall of technophilia, is advanced. In terms of this, both positive and negative appraisals of information technology by prominent new media theorists are discussed, and information technology is put forward as a tool that remains indeterminate in terms of its use. After this, and with a view to exploring how the technological dimension of the DSP might possibly be inflected in a pro-environmental manner, the thesis draws on the works of Gilles Deleuze and Félix Guattari who promote desire and difference outside the ambit of capitalism, particularly through desubjectivation in relation to their concept of ‘becoming-animal.’ Finally, after dealing in addition with some potential theoretical challenges to the application of Deleuze’s ideas within the digital realm, focus shifts to three contemporary digital artefacts which have the capacity, albeit to varying degrees, to facilitate a becoming-animal. In this regard, a distinction is made between those artefacts that precipitate first-, second- and third-order hybrid durationality, and it is argued that the latter category presents the greatest promise of interfacing the time of humans with the time of animals.
- Full Text:
- Date Issued: 2016
- Authors: Siwak, Jakub
- Date: 2016
- Subjects: Mass media and the environment , Neoliberalism
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8329 , vital:26343
- Description: This thesis explores whether or not it is possible to positively inflect – via digital means – people’s orientations toward nature through connecting their duration to the time of animals. The thesis opens with an overview of the contemporary environmental crisis, mapping related significant discourses, events and responses from the early 1960s onward. In this regard, after thematizing the relatively ineffective global institutional response to the environmental crisis to date – in spite of both consistent criticisms proffered by a range of stakeholders and widely available information on the scope of current environmental degradation – the lack of any concerted effort to deal with this issue is accounted for in terms of the dimensions of what Kilbourne, Beckmann and Thelen refer to as the ‘Dominant Social Paradigm’ (DSP). However, it is argued that of these dimensions, the technological dimension is most amenable to pro-environmental inflection, particularly through recent developments within information technology. That is, despite the latter being the privileged technology of neoliberalism, and despite the environmental cost of its current material infrastructure, it is also highly unlikely that societies will abandon their dependence on information technology in the near future. Given this, the importance of considering how such technology can be harnessed to positively re-orientate users’ perceptions of the natural world, in a way that also avoids the pitfall of technophilia, is advanced. In terms of this, both positive and negative appraisals of information technology by prominent new media theorists are discussed, and information technology is put forward as a tool that remains indeterminate in terms of its use. After this, and with a view to exploring how the technological dimension of the DSP might possibly be inflected in a pro-environmental manner, the thesis draws on the works of Gilles Deleuze and Félix Guattari who promote desire and difference outside the ambit of capitalism, particularly through desubjectivation in relation to their concept of ‘becoming-animal.’ Finally, after dealing in addition with some potential theoretical challenges to the application of Deleuze’s ideas within the digital realm, focus shifts to three contemporary digital artefacts which have the capacity, albeit to varying degrees, to facilitate a becoming-animal. In this regard, a distinction is made between those artefacts that precipitate first-, second- and third-order hybrid durationality, and it is argued that the latter category presents the greatest promise of interfacing the time of humans with the time of animals.
- Full Text:
- Date Issued: 2016
The relationship between language and xenophobia: a developmental perspective
- Authors: Chikanda, Flora
- Date: 2016
- Subjects: Xenophobia -- South Africa , Xenophobia in language , Immigrants -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/4942 , vital:20768
- Description: Modernisation, globalisation, neoliberalism and the increase in immigration have morphed into xenophobia, as they have resulted in structures that increased inequalities and competition for scarce resources, although there are other factors such as the global recession that is deepening inequalities and social classes. In South Africa, xenophobia is a topical matter, with chronic violent outbursts. The study addresses the gap in knowledge in the relationship between language and xenophobia. Language is central to human communication and to human socialisation and is not neutral but is embedded in ideologies that favour specific interest groups. The neoliberal ideology compels people as human capital to develop linguistic capital. The paradox is that globalisation transcends the national to transnational, while at the same time being conscious of the local or the indigenous language. Globalisation promotes hybridity and diversity, while at the same time promoting homogeneity or Westernisation, which is contrary to the nationalist ideology to protect the cultural heritage of the locals. This thesis is guided by a range of classical and more contemporary development theories. It includes the use of Marxist theory with regard to ownership and unequal distribution of resources. The culture of violence that manifests in xenophobia in South Africa can also be related to the violence of the colonial and apartheid periods. This thesis is also guided by the post-colonial theory. It also looks at theories of modernity and of globalisation, suggesting that a truly ‘modern’ society should be transformed in all spheres and should value multifaceted human well-being (and not only in terms of economic ‘growth’). A primary objective of this study is to explore the role of language in social institutions such as education in order to understand how matters of language exacerbate xenophobia and to document the challenges related to language that ‘foreigners’ from other parts of Africa face in South Africa. Questions asked include whether they can survive/thrive without knowledge of local languages, whether they are victims of crime because they cannot speak the local languages and whether and how they are being assimilated into South African society. This research therefore, recommends that language planning in South Africa should maintain a balance in the use of the English language as a lingua franca and the use of the indigenous languages so as to avoid the language endangerment of the indigenous languages and monolingualism, as well as subtractive bilingualism. This research is against institutional discrimination of foreigners by use of language as a gate keeper or an entry fee into the higher domains. The results of this research lead to the recommendation on language planning that leads to economic opportunity, higher economic productivity, educational development, enrichment in the sense of creativity innovation, cognitive flexibility, and more effective social integration, while restoring citizens’ sense of self-worth and their experience of emotional and social security, and also promoting social integrity and nation-building. Good language planning should be a crucial aspect of development planning. This research contributes to the field of Development Studies in that it analyses the conflicting issues within language and xenophobia in South Africa, while using the complexity theory to restore a modernised society with modern values that are not xenophobic but open to the global society. It also contributes to the politics of culture by keeping a balance between the endogenous culture versus the exogenous culture; a localised culture versus a globalised culture.
- Full Text:
- Date Issued: 2016
- Authors: Chikanda, Flora
- Date: 2016
- Subjects: Xenophobia -- South Africa , Xenophobia in language , Immigrants -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/4942 , vital:20768
- Description: Modernisation, globalisation, neoliberalism and the increase in immigration have morphed into xenophobia, as they have resulted in structures that increased inequalities and competition for scarce resources, although there are other factors such as the global recession that is deepening inequalities and social classes. In South Africa, xenophobia is a topical matter, with chronic violent outbursts. The study addresses the gap in knowledge in the relationship between language and xenophobia. Language is central to human communication and to human socialisation and is not neutral but is embedded in ideologies that favour specific interest groups. The neoliberal ideology compels people as human capital to develop linguistic capital. The paradox is that globalisation transcends the national to transnational, while at the same time being conscious of the local or the indigenous language. Globalisation promotes hybridity and diversity, while at the same time promoting homogeneity or Westernisation, which is contrary to the nationalist ideology to protect the cultural heritage of the locals. This thesis is guided by a range of classical and more contemporary development theories. It includes the use of Marxist theory with regard to ownership and unequal distribution of resources. The culture of violence that manifests in xenophobia in South Africa can also be related to the violence of the colonial and apartheid periods. This thesis is also guided by the post-colonial theory. It also looks at theories of modernity and of globalisation, suggesting that a truly ‘modern’ society should be transformed in all spheres and should value multifaceted human well-being (and not only in terms of economic ‘growth’). A primary objective of this study is to explore the role of language in social institutions such as education in order to understand how matters of language exacerbate xenophobia and to document the challenges related to language that ‘foreigners’ from other parts of Africa face in South Africa. Questions asked include whether they can survive/thrive without knowledge of local languages, whether they are victims of crime because they cannot speak the local languages and whether and how they are being assimilated into South African society. This research therefore, recommends that language planning in South Africa should maintain a balance in the use of the English language as a lingua franca and the use of the indigenous languages so as to avoid the language endangerment of the indigenous languages and monolingualism, as well as subtractive bilingualism. This research is against institutional discrimination of foreigners by use of language as a gate keeper or an entry fee into the higher domains. The results of this research lead to the recommendation on language planning that leads to economic opportunity, higher economic productivity, educational development, enrichment in the sense of creativity innovation, cognitive flexibility, and more effective social integration, while restoring citizens’ sense of self-worth and their experience of emotional and social security, and also promoting social integrity and nation-building. Good language planning should be a crucial aspect of development planning. This research contributes to the field of Development Studies in that it analyses the conflicting issues within language and xenophobia in South Africa, while using the complexity theory to restore a modernised society with modern values that are not xenophobic but open to the global society. It also contributes to the politics of culture by keeping a balance between the endogenous culture versus the exogenous culture; a localised culture versus a globalised culture.
- Full Text:
- Date Issued: 2016
The influence of decentralisation on community development in Gasabo district of Rwanda
- Authors: Indoha, Janvier Kimenyi
- Date: 2016
- Subjects: Decentralization in government -- Rwanda Community development -- Rwanda
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/14345 , vital:27572
- Description: This study investigated the influence of decentralisation on community development in the Gasabo district of Rwanda. It was based on the assumption that the participation of citizens in decision-making, planning based on local needs and priorities and the implementation of development programmes associated with the decentralisation policy can improve service delivery and result in community development. It is vital that the decentralization policy be well understood so that appropriate strategies may be adopted and implemented with the aim of maximising advantages associated with it. This study provides, in addition to a literature review, a brief historical background of the evolution and transformation of governance in Rwanda. The country‟s system of governance as well as the challenges it has encountered along the way through different régimes are briefly addressed. Also, the legal and regulatory framework of the decentralization policy and strategies adopted and mechanisms of resource transfer are explained. The study used both qualitative and quantitative methods. Primary and secondary data were used in analysing the influence of decentralisation on community development in the Gasabo district of Rwanda. Primary data was collected through survey questionnaires, interviews and focus group discussions, while secondary data were gathered through a literature survey of relevant textbooks, peer-reviewed journals, reports and legislation. The research findings indicated that in the Gasabo district, decentralisation has contributed significantly towards improving governance aspects such as accountability, and citizen participation in development programmes, which are prerequisite factors of development. Concerning the planning process, the research found that the district development plan (DDP) was crafted through drawing its priorities from the national development plans embedded in the Economic Development and Poverty Reduction Strategies (EDPRS) and Rwanda‟s Vision 2020. However, despite the existence of the Joint Action Development Forum (JADF), created to join the development plans of development partners to the DDP, testimonies from development partners revealed that their relationship with the district is characterised by the lack of frank collaboration, leading to their not being fully associated in the planning process. This research also found that the decentralisation policy has contributed only to a limited extent to the improvement of service delivery in Gasabo district. It was observed that effective service delivery is still hampered by the lack of skilled employees, especially in the areas of education, health and engineering, a budget insufficient for the effective implementation of development projects in such a way as to satisfy the expectations of beneficiaries. In view of the aforementioned findings, the study recommends that the central government intervene in training district tax officers regarding mechanisms and strategies of maximising tax collection to draw sufficient funds to carry out development plans. Through building their capacity, the imbalance between the responsibilities and means allocated for carrying out their achievement can be progressively reduced. Furthermore, to prevent development from taking place in a random manner, district authorities should receive technical support from the central government through linking the local planning process to national poverty reduction efforts. The annual performance contract system needs to be strengthened and monitored to evaluate the implementation of district development plans so as to prevent any kind of poor leadership performance, with the aim of optimising available resources.
- Full Text:
- Date Issued: 2016
- Authors: Indoha, Janvier Kimenyi
- Date: 2016
- Subjects: Decentralization in government -- Rwanda Community development -- Rwanda
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/14345 , vital:27572
- Description: This study investigated the influence of decentralisation on community development in the Gasabo district of Rwanda. It was based on the assumption that the participation of citizens in decision-making, planning based on local needs and priorities and the implementation of development programmes associated with the decentralisation policy can improve service delivery and result in community development. It is vital that the decentralization policy be well understood so that appropriate strategies may be adopted and implemented with the aim of maximising advantages associated with it. This study provides, in addition to a literature review, a brief historical background of the evolution and transformation of governance in Rwanda. The country‟s system of governance as well as the challenges it has encountered along the way through different régimes are briefly addressed. Also, the legal and regulatory framework of the decentralization policy and strategies adopted and mechanisms of resource transfer are explained. The study used both qualitative and quantitative methods. Primary and secondary data were used in analysing the influence of decentralisation on community development in the Gasabo district of Rwanda. Primary data was collected through survey questionnaires, interviews and focus group discussions, while secondary data were gathered through a literature survey of relevant textbooks, peer-reviewed journals, reports and legislation. The research findings indicated that in the Gasabo district, decentralisation has contributed significantly towards improving governance aspects such as accountability, and citizen participation in development programmes, which are prerequisite factors of development. Concerning the planning process, the research found that the district development plan (DDP) was crafted through drawing its priorities from the national development plans embedded in the Economic Development and Poverty Reduction Strategies (EDPRS) and Rwanda‟s Vision 2020. However, despite the existence of the Joint Action Development Forum (JADF), created to join the development plans of development partners to the DDP, testimonies from development partners revealed that their relationship with the district is characterised by the lack of frank collaboration, leading to their not being fully associated in the planning process. This research also found that the decentralisation policy has contributed only to a limited extent to the improvement of service delivery in Gasabo district. It was observed that effective service delivery is still hampered by the lack of skilled employees, especially in the areas of education, health and engineering, a budget insufficient for the effective implementation of development projects in such a way as to satisfy the expectations of beneficiaries. In view of the aforementioned findings, the study recommends that the central government intervene in training district tax officers regarding mechanisms and strategies of maximising tax collection to draw sufficient funds to carry out development plans. Through building their capacity, the imbalance between the responsibilities and means allocated for carrying out their achievement can be progressively reduced. Furthermore, to prevent development from taking place in a random manner, district authorities should receive technical support from the central government through linking the local planning process to national poverty reduction efforts. The annual performance contract system needs to be strengthened and monitored to evaluate the implementation of district development plans so as to prevent any kind of poor leadership performance, with the aim of optimising available resources.
- Full Text:
- Date Issued: 2016
The role of apex predators in ecosystem function: fear triggered cascades regulated by differential prey vulnerability
- Authors: Le Roux, Elizabeth
- Date: 2016
- Subjects: Top predators -- Ecology Predation (Biology)
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/14774 , vital:27849
- Description: Trophic cascades involving large terrestrial mammals are very seldom empirically demonstrated. The high species diversity often associated with terrestrial systems is thought to modulate the strength of trophic cascades. In speciose systems, species often vary in vulnerability to consumption, hence some species are less responsive to top-down pressure. African large mammalian herbivores are highly diverse and vary greatly in body size, a characteristic linked to vulnerability to predation. Moreover, Africa is one of the last places to still support megaherbivores, species that have grown large enough to be practically impervious to non-human predation. Thus an African ecosystem is the ideal setting to explore trophic cascades in speciose terrestrial systems. In this study I explored patterns in trophic interaction amongst carnivores, vulnerable mesoherbivore and predator-invulnerable megaherbivores in an intact African savanna at a variety of spatial scales. I examined the mechanistic links between trophic levels at the patch scale through fine scale empirical manipulation of predation risk. In addition, I assessed the landscape scale biological relevance of these trophic interactions through correlative observations over large spatiotemporal scales. I present the first evidence of community level trophic cascades explicitly involving megaherbivores. I demonstrate how megaherbivores’ disregard of predation risk masks the effects of predator-triggered trophic cascades and weakens their impact on the ecosystem. The risk of predation triggered a spatial response in vulnerable species, driving them into safe areas, yet did not influence the space use of megaherbivores. This species-specific spatial response had contrasting effects on nutrient distribution. Vulnerable herbivores’ fear-induced foraging behaviour led to localised nutrient accumulation whereas the foraging behaviour of predator-invulnerable megaherbivores led to nutrient redistribution across the landscape. In addition, the fear-driven spatial differences in mesoherbivore grazing impact and nutrient deposition led to landscape scale changes in the distribution and persistence of herbivore maintained grass communities, so-called grazing lawns. However, the grazing activity of the in-vulnerable megagrazer, white rhino (Ceratotherium simum) weakened the effect of this trophic cascade by creating and maintaining grazing lawns within the risky habitat avoided by mesograzers. This study contributes to our understanding of what drives the variation among patterns of trophic control and provides the first evidence of the modulating influence that megaherbivores have on predator-triggered trophic cascades.
- Full Text:
- Date Issued: 2016
- Authors: Le Roux, Elizabeth
- Date: 2016
- Subjects: Top predators -- Ecology Predation (Biology)
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/14774 , vital:27849
- Description: Trophic cascades involving large terrestrial mammals are very seldom empirically demonstrated. The high species diversity often associated with terrestrial systems is thought to modulate the strength of trophic cascades. In speciose systems, species often vary in vulnerability to consumption, hence some species are less responsive to top-down pressure. African large mammalian herbivores are highly diverse and vary greatly in body size, a characteristic linked to vulnerability to predation. Moreover, Africa is one of the last places to still support megaherbivores, species that have grown large enough to be practically impervious to non-human predation. Thus an African ecosystem is the ideal setting to explore trophic cascades in speciose terrestrial systems. In this study I explored patterns in trophic interaction amongst carnivores, vulnerable mesoherbivore and predator-invulnerable megaherbivores in an intact African savanna at a variety of spatial scales. I examined the mechanistic links between trophic levels at the patch scale through fine scale empirical manipulation of predation risk. In addition, I assessed the landscape scale biological relevance of these trophic interactions through correlative observations over large spatiotemporal scales. I present the first evidence of community level trophic cascades explicitly involving megaherbivores. I demonstrate how megaherbivores’ disregard of predation risk masks the effects of predator-triggered trophic cascades and weakens their impact on the ecosystem. The risk of predation triggered a spatial response in vulnerable species, driving them into safe areas, yet did not influence the space use of megaherbivores. This species-specific spatial response had contrasting effects on nutrient distribution. Vulnerable herbivores’ fear-induced foraging behaviour led to localised nutrient accumulation whereas the foraging behaviour of predator-invulnerable megaherbivores led to nutrient redistribution across the landscape. In addition, the fear-driven spatial differences in mesoherbivore grazing impact and nutrient deposition led to landscape scale changes in the distribution and persistence of herbivore maintained grass communities, so-called grazing lawns. However, the grazing activity of the in-vulnerable megagrazer, white rhino (Ceratotherium simum) weakened the effect of this trophic cascade by creating and maintaining grazing lawns within the risky habitat avoided by mesograzers. This study contributes to our understanding of what drives the variation among patterns of trophic control and provides the first evidence of the modulating influence that megaherbivores have on predator-triggered trophic cascades.
- Full Text:
- Date Issued: 2016
A critical analysis of the role of strategic communication in strategic planning : a case study of South African universities
- Authors: Hadji, Mutambuli James
- Date: 2016
- Subjects: Communication in management Business communication Strategic planning
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/8209 , vital:31978
- Description: The debate on how the communication function can contribute at a strategic level to organisational success is an on-going one because communicators still need to prove their relevance at the top management level. In general, the contribution of communication as a management function in corporate strategy is not known. It is either considered an afterthought or as an element within other functional departments. In this regard, the purpose of this study was to analyse critically the role of communication in strategic planning at the selected South African universities. To achieve this main objective, institutional theory was applied, as it seeks to affirm the role of communication in decision-making with the intention to be legitimised. In-depth interviews were conducted with senior communicators and strategy planners at six universities on how they approach strategic planning in their respective universities. Significant from the findings was the fact that the South African universities follow the same process for strategic planning. Regarding the role of strategic communication, the findings confirmed literature in the sense that communication practice at functional level has been institutionalised but not at the top management level. It was this study’s finding that university reputation and positioning did not prominently feature in the strategic planning processes. Furthermore, this study found that communicators should play a leading in environmental scanning to identify society, industry and commerce with a view to fine-tune the university’s qualification mix. That is, communicators should provide intelligence on changes in the environment which serve as the basis of the development of university strategies. In other words, they should provide vital information to top management to enable them to take informed strategic decisions. Lastly, it was this study’s finding that communicators should conduct evaluation research to assist top management in comparing the set strategic objectives with actual performance. In addition, the communicators should assist top management in determining corrective actions if need be. In view of these findings, this study developed guidelines that will empower communicators to make a more meaningful contribution in the strategic planning process. Given the paucity of research evidence of strategic communication in a university context, the study provides a better understanding of the theory and practice thereof.
- Full Text:
- Date Issued: 2016
- Authors: Hadji, Mutambuli James
- Date: 2016
- Subjects: Communication in management Business communication Strategic planning
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/8209 , vital:31978
- Description: The debate on how the communication function can contribute at a strategic level to organisational success is an on-going one because communicators still need to prove their relevance at the top management level. In general, the contribution of communication as a management function in corporate strategy is not known. It is either considered an afterthought or as an element within other functional departments. In this regard, the purpose of this study was to analyse critically the role of communication in strategic planning at the selected South African universities. To achieve this main objective, institutional theory was applied, as it seeks to affirm the role of communication in decision-making with the intention to be legitimised. In-depth interviews were conducted with senior communicators and strategy planners at six universities on how they approach strategic planning in their respective universities. Significant from the findings was the fact that the South African universities follow the same process for strategic planning. Regarding the role of strategic communication, the findings confirmed literature in the sense that communication practice at functional level has been institutionalised but not at the top management level. It was this study’s finding that university reputation and positioning did not prominently feature in the strategic planning processes. Furthermore, this study found that communicators should play a leading in environmental scanning to identify society, industry and commerce with a view to fine-tune the university’s qualification mix. That is, communicators should provide intelligence on changes in the environment which serve as the basis of the development of university strategies. In other words, they should provide vital information to top management to enable them to take informed strategic decisions. Lastly, it was this study’s finding that communicators should conduct evaluation research to assist top management in comparing the set strategic objectives with actual performance. In addition, the communicators should assist top management in determining corrective actions if need be. In view of these findings, this study developed guidelines that will empower communicators to make a more meaningful contribution in the strategic planning process. Given the paucity of research evidence of strategic communication in a university context, the study provides a better understanding of the theory and practice thereof.
- Full Text:
- Date Issued: 2016
Evaluation of the incidence of enteric viruses, Vibrio species and Escherichia coli pathotypes in effluents of two wastewater treatment plants located in Keiskammahoek and Stutterheim in the Eastern Cape Province of South Africa
- Authors: Adefisoye, Martins Ajibade
- Date: 2016
- Subjects: Escherichia coli -- South Africa -- Eastern Cape Water -- Purification -- South Africa -- Eastern Cape Effluent quality -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/3165 , vital:28328
- Description: South Africa is currently experiencing water shortage crisis, a challenge that has been attributed not only to the scarcity of freshwater, but also to fast degrading water quality. Factors such as rapid urbanisation, population and economic growth, climate change as well as poor operational and maintenance of many of the exisiting water/wastewater treatment facilities have been acknowledged as important contributors to degrading water quality in the country. Untreated or inadequately treated discharged wastewater effluents constitute point source pollution to many freshwater environments in South Africa. Hence, it becomes imperative to evaluate wastewater discharges in other to protect the scarce freshwater resource, the environment and public health. Over a twelve-month sampling period (September 2012 to August 2013), we assessed the bacteriological, virological and physicochemical qualities of the discharged final effluents of two wastewater treatment facilities in the Eastern Cape Province of South Africa. For the physicochemical assessment, a total of 144 final effluent samples were collected from both the final effluent tanks (FE) and the discharge points (DP) of the treatment facilities. Physicochemical parameters including pH, temperature, turbidity, total dissolved solids (TDS), dissolved oxygen (DO), electrical conductivity (EC) and free chlorine concentration were determined on site while biological oxygen demand (BOD), nitrate (NO3-), nitrite (NO2-), phosphate (PO4-) and chemical oxygen demand (COD) were determined in the laboratory. The bacteriological analysis of the samples was done using standard membrane filtration (MF) technique. Bacterial group assessed included: faecal indicator bacteria (faecal coliforms and E. coli) and Vibrio species, while the antibiotic susceptibility profiles of selected E. coli and Vibrio species isolates against some selected antibiotics commonly used in human therapy and veterinary medicine were determind using the standard agar-disc diffusion method. The occurrence and concentrations of human enteric viruses including: human adenovirus (HAdV), hepatitis A virus (HAV) and rotavirus (RoV) in the samples were determined by TaqMan-based real-time polymerase chain reaction (qPCR) following concentration by adsorption-elution method. The physicochemical characteristics of the samples ranged as follows: pH (6.5 – 7.6), TDS (95 – 171 mg/L), EC (134 – 267 μS/cm), temperature (12 – 27 °C), turbidity (1.5 – 65.7 mg/L), free chlorine (0.08 – 0.72 mg/L), DO (2.06 – 9.81 mg/L), BOD (0.13 – 9.81 mg/L), NO3- (0 – 21.5 mg/L), NO2- (0 – 0.72 mg/L), PO4- (0 – 18.3 mg/L) and COD (27 – 680 mg/L). Some of the characteristic such as pH, TDS, EC, temperature, nitrite and DO (on most instances) complied with recommended guidelines. Other characteristics, however, including turbidity, BOD, nitrate, phosphate and COD fell short of the recommended guidelines. All the 48 samples analysed for bacteriological qualities tested positive for the presence of the bacterial groups with significant (P≤0.05) seasonal variation in their densities. Faecal coliforms were detected in counts ranging from 1 CFU/100ml to 2.7 × 104 CFU/100ml. Presumptive E. coli counts ranged generally between 1 CFU/100ml – 1.4 × 105 CFU/100ml while counts of presumptive Vibrio species ranged between 4 CFU/100ml – 1.4 × 104 CFU/100ml. Molecular identification of the presumptive isolates by polymerase chain reactions PCR gave positive reaction rates of 76.2 percent (381/500) and 69.8 percent (279/400) for E.coli and Vibrio species respectively. The antibiotic susceptibility profiling of 205 PCR-confirmed Vibiro isolates against 18 commomly used antibiotics showed resistance frequencies ranging from 0.5 percent (imipenem) to 96.1 percent (penicillin G) at recommended breakpoint concentrations. Eighty-one percent (166/205) of the Vibrio isolates showed multidrug resistance (resistance to 3 or more antibiotics) with the most common multiple antibiotic resistance phenotype (MARP) being AP-T-TM-SMX-PG-NI-PB, occurring in 8 isolates.
- Full Text:
- Date Issued: 2016
- Authors: Adefisoye, Martins Ajibade
- Date: 2016
- Subjects: Escherichia coli -- South Africa -- Eastern Cape Water -- Purification -- South Africa -- Eastern Cape Effluent quality -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/3165 , vital:28328
- Description: South Africa is currently experiencing water shortage crisis, a challenge that has been attributed not only to the scarcity of freshwater, but also to fast degrading water quality. Factors such as rapid urbanisation, population and economic growth, climate change as well as poor operational and maintenance of many of the exisiting water/wastewater treatment facilities have been acknowledged as important contributors to degrading water quality in the country. Untreated or inadequately treated discharged wastewater effluents constitute point source pollution to many freshwater environments in South Africa. Hence, it becomes imperative to evaluate wastewater discharges in other to protect the scarce freshwater resource, the environment and public health. Over a twelve-month sampling period (September 2012 to August 2013), we assessed the bacteriological, virological and physicochemical qualities of the discharged final effluents of two wastewater treatment facilities in the Eastern Cape Province of South Africa. For the physicochemical assessment, a total of 144 final effluent samples were collected from both the final effluent tanks (FE) and the discharge points (DP) of the treatment facilities. Physicochemical parameters including pH, temperature, turbidity, total dissolved solids (TDS), dissolved oxygen (DO), electrical conductivity (EC) and free chlorine concentration were determined on site while biological oxygen demand (BOD), nitrate (NO3-), nitrite (NO2-), phosphate (PO4-) and chemical oxygen demand (COD) were determined in the laboratory. The bacteriological analysis of the samples was done using standard membrane filtration (MF) technique. Bacterial group assessed included: faecal indicator bacteria (faecal coliforms and E. coli) and Vibrio species, while the antibiotic susceptibility profiles of selected E. coli and Vibrio species isolates against some selected antibiotics commonly used in human therapy and veterinary medicine were determind using the standard agar-disc diffusion method. The occurrence and concentrations of human enteric viruses including: human adenovirus (HAdV), hepatitis A virus (HAV) and rotavirus (RoV) in the samples were determined by TaqMan-based real-time polymerase chain reaction (qPCR) following concentration by adsorption-elution method. The physicochemical characteristics of the samples ranged as follows: pH (6.5 – 7.6), TDS (95 – 171 mg/L), EC (134 – 267 μS/cm), temperature (12 – 27 °C), turbidity (1.5 – 65.7 mg/L), free chlorine (0.08 – 0.72 mg/L), DO (2.06 – 9.81 mg/L), BOD (0.13 – 9.81 mg/L), NO3- (0 – 21.5 mg/L), NO2- (0 – 0.72 mg/L), PO4- (0 – 18.3 mg/L) and COD (27 – 680 mg/L). Some of the characteristic such as pH, TDS, EC, temperature, nitrite and DO (on most instances) complied with recommended guidelines. Other characteristics, however, including turbidity, BOD, nitrate, phosphate and COD fell short of the recommended guidelines. All the 48 samples analysed for bacteriological qualities tested positive for the presence of the bacterial groups with significant (P≤0.05) seasonal variation in their densities. Faecal coliforms were detected in counts ranging from 1 CFU/100ml to 2.7 × 104 CFU/100ml. Presumptive E. coli counts ranged generally between 1 CFU/100ml – 1.4 × 105 CFU/100ml while counts of presumptive Vibrio species ranged between 4 CFU/100ml – 1.4 × 104 CFU/100ml. Molecular identification of the presumptive isolates by polymerase chain reactions PCR gave positive reaction rates of 76.2 percent (381/500) and 69.8 percent (279/400) for E.coli and Vibrio species respectively. The antibiotic susceptibility profiling of 205 PCR-confirmed Vibiro isolates against 18 commomly used antibiotics showed resistance frequencies ranging from 0.5 percent (imipenem) to 96.1 percent (penicillin G) at recommended breakpoint concentrations. Eighty-one percent (166/205) of the Vibrio isolates showed multidrug resistance (resistance to 3 or more antibiotics) with the most common multiple antibiotic resistance phenotype (MARP) being AP-T-TM-SMX-PG-NI-PB, occurring in 8 isolates.
- Full Text:
- Date Issued: 2016
A framework for enhancing trust for improved participation in electronic marketplaces accessed from mobile platforms
- Isabirye, Naomi Nabirye, Von Solms, R
- Authors: Isabirye, Naomi Nabirye , Von Solms, R
- Date: 2016
- Subjects: Information technology -- Economic aspects -- South Africa Agricultural innovations -- South Africa Agricultural systems -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/20019 , vital:29053
- Description: Information and communication technologies (ICTs) have been widely researched as a mechanism for improving the socio-economic status of disadvantaged, rural communities. In order to do this numerous technology-based initiatives have been introduced into disadvantaged, rural communities to assist them in various aspects of their lives. Unfortunately, even when the proposed benefit of a particular technology is clearly evident to its initiators, the adoption by the target users is often uncertain. This has also been the case with e-commerce in agriculture. Despite the numerous benefits of e-commerce for agricultural producers, the uptake has been low. Trust is a critical pre-condition for the adoption of e-marketplaces. E-marketplaces expose consumers to the risk of non-delivery or misrepresentation of goods ordered and the misuse of personal information by external parties. Additionally, the time investment needed to make a shift to e-marketplaces and the opinions of important reference groups affects the user’s willingness to trust and depend on an e-marketplace. This study was undertaken to assess the extent to which rural users with limited ICT experience would trust and, consequently, adopt an e-marketplace to support agricultural trade. A pragmatic philosophy was adopted in this study, indicating that the researcher’s view of reality is founded on the practical implications and outcomes that are observed. This study used a Canonical Action Research strategy to design, develop and deploy a voice based e-marketplace to assist the trading activities of a Western Cape based aloe community. The community was allowed to utilise thee-marketplace over a period of eight weeks. Thereafter, interviews were held with the participants to investigate their perceptions of the technology. As a result, a model proposing the factors that must be in place for trust to be achieved in a voice based e-marketplace was proposed. The study found that the trustworthiness of a technology results from the technology’s technical capability to satisfy the needs of its users reliably. Usability and security were found to be important determinants of the trustworthiness of a technology. Furthermore, the requirements elicitation process was found to be central to achieving trust as it defines the necessary criteria for developing secure, usable, functional, and reliable technologies that meet the needs of their users.
- Full Text:
- Date Issued: 2016
- Authors: Isabirye, Naomi Nabirye , Von Solms, R
- Date: 2016
- Subjects: Information technology -- Economic aspects -- South Africa Agricultural innovations -- South Africa Agricultural systems -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/20019 , vital:29053
- Description: Information and communication technologies (ICTs) have been widely researched as a mechanism for improving the socio-economic status of disadvantaged, rural communities. In order to do this numerous technology-based initiatives have been introduced into disadvantaged, rural communities to assist them in various aspects of their lives. Unfortunately, even when the proposed benefit of a particular technology is clearly evident to its initiators, the adoption by the target users is often uncertain. This has also been the case with e-commerce in agriculture. Despite the numerous benefits of e-commerce for agricultural producers, the uptake has been low. Trust is a critical pre-condition for the adoption of e-marketplaces. E-marketplaces expose consumers to the risk of non-delivery or misrepresentation of goods ordered and the misuse of personal information by external parties. Additionally, the time investment needed to make a shift to e-marketplaces and the opinions of important reference groups affects the user’s willingness to trust and depend on an e-marketplace. This study was undertaken to assess the extent to which rural users with limited ICT experience would trust and, consequently, adopt an e-marketplace to support agricultural trade. A pragmatic philosophy was adopted in this study, indicating that the researcher’s view of reality is founded on the practical implications and outcomes that are observed. This study used a Canonical Action Research strategy to design, develop and deploy a voice based e-marketplace to assist the trading activities of a Western Cape based aloe community. The community was allowed to utilise thee-marketplace over a period of eight weeks. Thereafter, interviews were held with the participants to investigate their perceptions of the technology. As a result, a model proposing the factors that must be in place for trust to be achieved in a voice based e-marketplace was proposed. The study found that the trustworthiness of a technology results from the technology’s technical capability to satisfy the needs of its users reliably. Usability and security were found to be important determinants of the trustworthiness of a technology. Furthermore, the requirements elicitation process was found to be central to achieving trust as it defines the necessary criteria for developing secure, usable, functional, and reliable technologies that meet the needs of their users.
- Full Text:
- Date Issued: 2016
Emotional intelligence training model for executive leadership in South Africa
- Authors: Els, Deon André
- Date: 2016
- Subjects: Development leadership -- South Africa , Executives -- Training of -- South Africa , Emotional intelligence -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/7398 , vital:21350
- Description: Global leadership crises and increasing executive leadership failures necessitate a new approach to executive leadership development. Globalisation results in new leadership challenges that affect people, the planet and peace across the world. Critical issues include increasing extremism and terrorism, displaced migrants fleeing to stable countries, earth warming and economic decline. The role of the individual executive leader cannot be isolated from human development challenges. Various executive leadership failures and examples of unethical leadership practises, both internationally and in South Africa, place the focus on ethical governance and emotionally matured leadership development. This study follows a nexus, based on a three-stranded cordial link between human development, emotional intelligence and executive leadership. The central themes of the United Nations Human Development’s (UNDP) reports of 1990 to 2009 as well as the Post-United Nations Human Development Report of 2015 form a framework for evaluating the relationship between human development and executive leadership. Although economic growth is central to human development, the development of people through building human capabilities and active participation to improve their lives, are the main goals of the UNDP-2015. The role of executive leadership, leadership derailment and required executive proficiencies and attributes are investigated by evaluating traditional leadership theories and approaches as a lens for investigating leadership development. The positive effect of globalisation is that it affords new approaches and opportunities for executive leadership development. Emotional intelligence-based leadership, including the role of neuro-leadership, is evaluated and an integrative approach that involves the new paradigm of leadership as a response to human development challenges and globalisation is presented. The new paradigm of integrative leadership approaches includes empirical-based authentic leadership, shared leadership and gender-based leadership. The integrative leadership models of Hatala and Passmore are selected as a framework to propose a theoretical emotional intelligence leadership model for this study. New opportunities to develop emotionally intelligent executive leaders include technology-based training, iLeadership and eLeadership in an environment without boundaries. Time constraints are identified as a key obstacle for leadership development. Various training and executive coaching strategies are evaluated and proposed to accelerate leadership development. The link between human development and executive leadership development is proposed by collective leadership approaches towards Corporate Social Responsibilities (CSR) above entrepreneurial acumen and stakeholder involvement. A positivist approach based on quantitative research using Structural Equation Modelling (SEM) is used. The primary research problem is formulated to investigate the multidimensional and complex nature of factors that influence the success of developing emotionally intelligent executive leaders in South Africa. A conceptual theoretical model comprising of factors that influence Human Development and the perceived success of Emotional Intelligence Training is developed. A total of ten independent variables that influence the two mentioned dependent variables are identified. The proposed model and envisaged hypotheses are empirically tested. The study consists of a 73-itemed questionnaire with 360 participants. The sourced data are statically analysed by means of the exploratory factor analysis (EFA) to assess the discriminate validity of the research instrument and to confirm underlying dimensions of the constructs. Cronbach-alpha coefficients are calculated for each of the identified factors by using SEM. The significance of the hypothesised relationships in the revised model is tested. The value of this study’s contribution to the body of knowledge lies within the findings, the proposed Integrative Emotional Intelligence Leadership Model and recommendations for future research. The proposed model identifies practical training approaches to accelerate executive leadership against a background of serious leadership failures in South Africa.
- Full Text:
- Date Issued: 2016
- Authors: Els, Deon André
- Date: 2016
- Subjects: Development leadership -- South Africa , Executives -- Training of -- South Africa , Emotional intelligence -- South Africa
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/7398 , vital:21350
- Description: Global leadership crises and increasing executive leadership failures necessitate a new approach to executive leadership development. Globalisation results in new leadership challenges that affect people, the planet and peace across the world. Critical issues include increasing extremism and terrorism, displaced migrants fleeing to stable countries, earth warming and economic decline. The role of the individual executive leader cannot be isolated from human development challenges. Various executive leadership failures and examples of unethical leadership practises, both internationally and in South Africa, place the focus on ethical governance and emotionally matured leadership development. This study follows a nexus, based on a three-stranded cordial link between human development, emotional intelligence and executive leadership. The central themes of the United Nations Human Development’s (UNDP) reports of 1990 to 2009 as well as the Post-United Nations Human Development Report of 2015 form a framework for evaluating the relationship between human development and executive leadership. Although economic growth is central to human development, the development of people through building human capabilities and active participation to improve their lives, are the main goals of the UNDP-2015. The role of executive leadership, leadership derailment and required executive proficiencies and attributes are investigated by evaluating traditional leadership theories and approaches as a lens for investigating leadership development. The positive effect of globalisation is that it affords new approaches and opportunities for executive leadership development. Emotional intelligence-based leadership, including the role of neuro-leadership, is evaluated and an integrative approach that involves the new paradigm of leadership as a response to human development challenges and globalisation is presented. The new paradigm of integrative leadership approaches includes empirical-based authentic leadership, shared leadership and gender-based leadership. The integrative leadership models of Hatala and Passmore are selected as a framework to propose a theoretical emotional intelligence leadership model for this study. New opportunities to develop emotionally intelligent executive leaders include technology-based training, iLeadership and eLeadership in an environment without boundaries. Time constraints are identified as a key obstacle for leadership development. Various training and executive coaching strategies are evaluated and proposed to accelerate leadership development. The link between human development and executive leadership development is proposed by collective leadership approaches towards Corporate Social Responsibilities (CSR) above entrepreneurial acumen and stakeholder involvement. A positivist approach based on quantitative research using Structural Equation Modelling (SEM) is used. The primary research problem is formulated to investigate the multidimensional and complex nature of factors that influence the success of developing emotionally intelligent executive leaders in South Africa. A conceptual theoretical model comprising of factors that influence Human Development and the perceived success of Emotional Intelligence Training is developed. A total of ten independent variables that influence the two mentioned dependent variables are identified. The proposed model and envisaged hypotheses are empirically tested. The study consists of a 73-itemed questionnaire with 360 participants. The sourced data are statically analysed by means of the exploratory factor analysis (EFA) to assess the discriminate validity of the research instrument and to confirm underlying dimensions of the constructs. Cronbach-alpha coefficients are calculated for each of the identified factors by using SEM. The significance of the hypothesised relationships in the revised model is tested. The value of this study’s contribution to the body of knowledge lies within the findings, the proposed Integrative Emotional Intelligence Leadership Model and recommendations for future research. The proposed model identifies practical training approaches to accelerate executive leadership against a background of serious leadership failures in South Africa.
- Full Text:
- Date Issued: 2016
Indigenous forests level of deforestation, forest dependency and factors determining willingness to participate in indigenous forest conservation: evidence from resettled farmers of Shamva, Zimbabwe
- Authors: Chivheya, Renias V
- Date: 2016
- Subjects: Forest conservation -- Zimbabwe Forests and forestry -- Economic aspects -- Zimbabwe Deforestation -- Zimbabwe
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2370 , vital:27786
- Description: This study first explored the rate of forest deforestation in Shamva resettlement areas. It then identified and estimated the extent to which these resettled farmers depend on forest for their livelihoods. Evaluation of farmer perceptions on management issues and willingness to participate in indigenous forest conservation and the socio-economic and institutional factors which affect their willingness to participate were also done. Finally the study sought to identify incentives for forests conservation. The study was conducted in Shamva district in Mashonaland Central province. And the respondents were stratified into three groups: A1, A2 and Old resettlement models. The three models differ on how they were implemented and supported which might render them to have different deforestation rates, livelihood strategies and forest dependency. A total of 247 respondents were surveyed, consisting of 98 A1 farmers, 50 A2 farmers and 99 Old resettled farmers. The data was collected using GIS and remote sensing, structured questionnaire interviews and direct observation. The data was analysed using descriptive analysis, KAP analytic framework and binary logistic regression analysis. The land cover/changes results revealed that both deforestation and afforestation are taking place in Shamva resettlement. Woodland and bushland were decreasing, croplands were also decreasing. However woodland dense and grasslands were increasing. Deforestation was found to be as a result of the resettled farmers’ livelihood strategies which were found to be diverse and agriculture being dominant in all models. All the farmers depended on the forest but at varying levels of 19 percent for Old and 14 percent forA1 and 0.02 percent for A2 resettle farmers. 84 percent of the interviewed farmers however, indicated that they are willing to conserve forest with A1 farmers being the highest followed by A2 86 percent and lastly Old resettled farmers at 76.8 percent. Results of the binary regression model revealed that the significant factors which explain willingness to participate in indigenous forest conservation are age, marital status, education, gender, institution, culture and belief, employment and household size. The highest preferred incentive was the provision of free seedlings and the lowest was out grower scheme. The study recommends that GIS and remote sensing should be used to monitor deforestation, off farm projects be encouraged, exotic and indigenous trees be promoted and forest conservation education be promoted in resettlement areas.
- Full Text:
- Date Issued: 2016
- Authors: Chivheya, Renias V
- Date: 2016
- Subjects: Forest conservation -- Zimbabwe Forests and forestry -- Economic aspects -- Zimbabwe Deforestation -- Zimbabwe
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2370 , vital:27786
- Description: This study first explored the rate of forest deforestation in Shamva resettlement areas. It then identified and estimated the extent to which these resettled farmers depend on forest for their livelihoods. Evaluation of farmer perceptions on management issues and willingness to participate in indigenous forest conservation and the socio-economic and institutional factors which affect their willingness to participate were also done. Finally the study sought to identify incentives for forests conservation. The study was conducted in Shamva district in Mashonaland Central province. And the respondents were stratified into three groups: A1, A2 and Old resettlement models. The three models differ on how they were implemented and supported which might render them to have different deforestation rates, livelihood strategies and forest dependency. A total of 247 respondents were surveyed, consisting of 98 A1 farmers, 50 A2 farmers and 99 Old resettled farmers. The data was collected using GIS and remote sensing, structured questionnaire interviews and direct observation. The data was analysed using descriptive analysis, KAP analytic framework and binary logistic regression analysis. The land cover/changes results revealed that both deforestation and afforestation are taking place in Shamva resettlement. Woodland and bushland were decreasing, croplands were also decreasing. However woodland dense and grasslands were increasing. Deforestation was found to be as a result of the resettled farmers’ livelihood strategies which were found to be diverse and agriculture being dominant in all models. All the farmers depended on the forest but at varying levels of 19 percent for Old and 14 percent forA1 and 0.02 percent for A2 resettle farmers. 84 percent of the interviewed farmers however, indicated that they are willing to conserve forest with A1 farmers being the highest followed by A2 86 percent and lastly Old resettled farmers at 76.8 percent. Results of the binary regression model revealed that the significant factors which explain willingness to participate in indigenous forest conservation are age, marital status, education, gender, institution, culture and belief, employment and household size. The highest preferred incentive was the provision of free seedlings and the lowest was out grower scheme. The study recommends that GIS and remote sensing should be used to monitor deforestation, off farm projects be encouraged, exotic and indigenous trees be promoted and forest conservation education be promoted in resettlement areas.
- Full Text:
- Date Issued: 2016
Causes of staff turnover in selected departments: province of the Eastern Cape
- Authors: Khelekethe, Eric Phathisile
- Date: 2016
- Subjects: Labor turnover -- South Africa -- Eastern Cape , Employee retention -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8836 , vital:26434
- Description: This research focused on the impact of staff turnover in selected departments of the Province of the Eastern Cape Province. High staff turnover rate may jeopardise efforts to attain organisational objectives. In addition, `when an organisation loses a critical employee, there is a negative impact, on innovation; consistency in providing service to guests may be jeopardised, and major delays in the delivery of services to customers may occur. The research design used in this study contained elements of both the quantitative and qualitative approaches, which allowed the researcher to use structured questionnaires in data collection, on which space was provided for comments. This study was influenced and shaped by the concerns raised by a number of General Managers in the course of various provincial meetings. The main purpose of this research was to identify retention strategies that could be used by selected departments to reduce the turnover of their talented staff. The research also investigated methods to retain knowledge within departments that could possibly be lost due to a high turnover rate among talented staff. The first step used to resolve the issues discussed above was to conduct a full literature study. The literature study sought to reveal what characteristics were required in the departments that ensured that staff would be happy in those departments and remain there for a long time. The literature study also covered what knowledge management methods could be used in managing valuable knowledge. Secondly, the views of current staff and management of the selected departments on staff and knowledge management strategies were solicited in an empirical study, which involved the completion of structured questionnaires. It is the researcher’s aim that this study will, firstly, contribute to the existing body of knowledge of staff turnover and that the Provincial Departments will take into cognisance the problems that lead to employee turnover. Secondly, that it will contribute to an improvement in employee working conditions in various Provincial Government departments.
- Full Text:
- Date Issued: 2016
- Authors: Khelekethe, Eric Phathisile
- Date: 2016
- Subjects: Labor turnover -- South Africa -- Eastern Cape , Employee retention -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/8836 , vital:26434
- Description: This research focused on the impact of staff turnover in selected departments of the Province of the Eastern Cape Province. High staff turnover rate may jeopardise efforts to attain organisational objectives. In addition, `when an organisation loses a critical employee, there is a negative impact, on innovation; consistency in providing service to guests may be jeopardised, and major delays in the delivery of services to customers may occur. The research design used in this study contained elements of both the quantitative and qualitative approaches, which allowed the researcher to use structured questionnaires in data collection, on which space was provided for comments. This study was influenced and shaped by the concerns raised by a number of General Managers in the course of various provincial meetings. The main purpose of this research was to identify retention strategies that could be used by selected departments to reduce the turnover of their talented staff. The research also investigated methods to retain knowledge within departments that could possibly be lost due to a high turnover rate among talented staff. The first step used to resolve the issues discussed above was to conduct a full literature study. The literature study sought to reveal what characteristics were required in the departments that ensured that staff would be happy in those departments and remain there for a long time. The literature study also covered what knowledge management methods could be used in managing valuable knowledge. Secondly, the views of current staff and management of the selected departments on staff and knowledge management strategies were solicited in an empirical study, which involved the completion of structured questionnaires. It is the researcher’s aim that this study will, firstly, contribute to the existing body of knowledge of staff turnover and that the Provincial Departments will take into cognisance the problems that lead to employee turnover. Secondly, that it will contribute to an improvement in employee working conditions in various Provincial Government departments.
- Full Text:
- Date Issued: 2016
Effects of grazing and housing management systems on greenhouse gas emissions, blood profiles and meat quality of Nguni goats
- Authors: Tapiwa, Chikwanda Allen
- Date: 2016
- Subjects: Goats Goats -- Feeding and feeds Greenhouse gas mitigation , Grazing -- Environmental aspects
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2314 , vital:27752
- Description: The broad objective of this study was to evaluate the effects of grazing and housing management systems on greenhouse gas emissions, blood profiles and meat quality of Nguni goats. A total of 64 castrated Nguni goats were used and a housing structure was designed to accommodate the goats as well as evaluate effects of type of floor on greenhouse gases, meat quality, blood metabolites and fatty acid profiles. In the first experiment: Forty-eight castrated Nguni goats, at 6-7 months old were used for herding (H) or tethering (T) management systems and randomly allocated to pens with earth (E) or slatted (S) floors. Gas sampling was done using static chambers and analysed using a SRI 8610C gas chromatography machine. The highest CH4 fluxes were from the manure of herded goats on earth floors (HE). The highest CO2 fluxes were from manure of herded goats that were housed on slatted floors (HS): The highest N2O fluxes were from the manure of tethered goats that were sheltered on slatted floors (TS). It was concluded from the first experiment that goat manure is an important source of GHG that is influenced by grazing and floor type management systems. The second experiment was done to evaluate greenhouse gas (GHG) emission from disused (DP) vs occupied goat pens (OP) with earth (EF) or slatted (SF) floors. Eight previously occupied pens were used in this study. Sixteen goats were randomly put in the pens labelled occupied pens with earth floors (OPEF) and occupied pens with slatted floors (OPSF) resulting in four goats per OP. There were month by pen use; month by floor type; and use by floor type interaction effects (P < 0.05) on CH4 production. Floor type, use (DP vs OP) and month affected (P < 0.05) CH4 production. Manure on earth floors of occupied pens (OPEF) emitted the highest (P < 0.05) methane followed by earth floors of disused pens (DPEF). The least CH4 was emitted from DPSF. There was pen use (DP vs OP) by floor type interaction effect (P < 0.05) on CO2 emission. Floor type and pen use affected (P < 0.05) CO2 production. Manure in occupied pens with slatted floors (OPSF) produced the highest CO2 and the least CO2 was from disused pens with slatted floors (DPSF). Floor type and month influenced (P < 0.05) N2O production. It was concluded that continued use of goat pens increased GHG emissions. However, disused goat pens with manure remain an important source of GHG as they continued to emit quantifiable levels of CH4, CO2 and N2O. The third experiment was done to determine the effects of grazing and housing management systems on the concentrations of blood metabolites, activity of creatine kinase, body weight (BW), body condition score (BCS) and carcass characteristics using 48 castrated Nguni goats. Tethered goats had higher (P<0.05): urea, creatinine, total protein, globulin concentrations and more activity of CK than herded goats. On the other hand, herded goats had higher (P<0.05) plasma glucose (H: 3.39±0.020 vs T: 3.23±0.020 mmol/L), serum albumin (H: 15.30±0.147 vs T: 14.82±0.144 g/L) concentration. It was concluded that serum concentrations of all the metabolites and the activity of CK were sensitive to grazing system. Herding of goats promoted more glucose concentration and preservation of muscle protein and hence superior body weights and BCS than tethered goats. The fourth experiment was done to determine the effects of grazing and housing management systems on the activity of creatine kinase (CK) and cortisol concentration, and chevon quality. Further, the effect of muscle type [Muscularis longissimus thoracis et. Lumborum (LTL) and triceps brachii (TB)] on chevon quality was also investigated. Forty eight castrated Nguni goats aged 6- 7 months were randomly allocated to tethering (n=24) and herding (n=24) treatments. Floor type affected meat (P<0.05) pH24. Tethered goats had higher (P < 0.05) L* and CL percent than herded goats. Muscle type had a significant influence (P < 0.05) on a*, WBSF and pH. It was observed and concluded that T resulted in higher L* and more CL percent whilst SF lowered the pH24 of chevon; at the same time meat from the TB muscle was more tender, despite having a higher pH24 and more CL percent relative to LTH cuts. The fifth experiment was done to determine the effect of grazing and floor type on fatty acid composition of chevon from tethered and herded Nguni goats. Floor type had no effect on fatty acid composition. Oleic, stearic, palmitic and linoleic were the major fatty acids. Chevon from tethered goats had higher (P < 0.05) proportions of long chain polyunsaturated fatty acids (PUFAs): eicosapentaenoic, docosapentaenoic, docosahexaenoic, conjugated linoleic acid (CLA) and more total SFA, total PUFA, total Omega- 6 and total omega 3 fatty acids than herded goats. On the other hand, chevon from herded goats had more (P < 0.05) C18:1c9, C18:2t9, 12 (n-6), C20:3c11, 14, 17 (n-3) and total MUFA than tethered goats. However, there was no difference (P > 0.05) in the PUFA: SFA and n-6/n-3 fatty acid ratios between the herded and tethered goats. It was concluded that tethering promoted higher proportions of beneficial PUFAs which were more in TB than LTH muscle. The overall conclusions from the whole study were that goat manure is an important source of GHG with high CH4 being emitted from earth floors of herded goats. High CO2 and N2O are emitted from SF of herded and tethered goats, respectively. There were no major differences in meat quality between herded and tethered goats. However, herding promoted more live weight gain than tethering. On the other hand, tethering promoted more beneficial fatty acids. Therefore depending on the objective of the enterprise, smallholder farmers can safely tether or herd their goats. Further, there is need to develop technologies to harness CH4 from goat manure.
- Full Text:
- Date Issued: 2016
- Authors: Tapiwa, Chikwanda Allen
- Date: 2016
- Subjects: Goats Goats -- Feeding and feeds Greenhouse gas mitigation , Grazing -- Environmental aspects
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10353/2314 , vital:27752
- Description: The broad objective of this study was to evaluate the effects of grazing and housing management systems on greenhouse gas emissions, blood profiles and meat quality of Nguni goats. A total of 64 castrated Nguni goats were used and a housing structure was designed to accommodate the goats as well as evaluate effects of type of floor on greenhouse gases, meat quality, blood metabolites and fatty acid profiles. In the first experiment: Forty-eight castrated Nguni goats, at 6-7 months old were used for herding (H) or tethering (T) management systems and randomly allocated to pens with earth (E) or slatted (S) floors. Gas sampling was done using static chambers and analysed using a SRI 8610C gas chromatography machine. The highest CH4 fluxes were from the manure of herded goats on earth floors (HE). The highest CO2 fluxes were from manure of herded goats that were housed on slatted floors (HS): The highest N2O fluxes were from the manure of tethered goats that were sheltered on slatted floors (TS). It was concluded from the first experiment that goat manure is an important source of GHG that is influenced by grazing and floor type management systems. The second experiment was done to evaluate greenhouse gas (GHG) emission from disused (DP) vs occupied goat pens (OP) with earth (EF) or slatted (SF) floors. Eight previously occupied pens were used in this study. Sixteen goats were randomly put in the pens labelled occupied pens with earth floors (OPEF) and occupied pens with slatted floors (OPSF) resulting in four goats per OP. There were month by pen use; month by floor type; and use by floor type interaction effects (P < 0.05) on CH4 production. Floor type, use (DP vs OP) and month affected (P < 0.05) CH4 production. Manure on earth floors of occupied pens (OPEF) emitted the highest (P < 0.05) methane followed by earth floors of disused pens (DPEF). The least CH4 was emitted from DPSF. There was pen use (DP vs OP) by floor type interaction effect (P < 0.05) on CO2 emission. Floor type and pen use affected (P < 0.05) CO2 production. Manure in occupied pens with slatted floors (OPSF) produced the highest CO2 and the least CO2 was from disused pens with slatted floors (DPSF). Floor type and month influenced (P < 0.05) N2O production. It was concluded that continued use of goat pens increased GHG emissions. However, disused goat pens with manure remain an important source of GHG as they continued to emit quantifiable levels of CH4, CO2 and N2O. The third experiment was done to determine the effects of grazing and housing management systems on the concentrations of blood metabolites, activity of creatine kinase, body weight (BW), body condition score (BCS) and carcass characteristics using 48 castrated Nguni goats. Tethered goats had higher (P<0.05): urea, creatinine, total protein, globulin concentrations and more activity of CK than herded goats. On the other hand, herded goats had higher (P<0.05) plasma glucose (H: 3.39±0.020 vs T: 3.23±0.020 mmol/L), serum albumin (H: 15.30±0.147 vs T: 14.82±0.144 g/L) concentration. It was concluded that serum concentrations of all the metabolites and the activity of CK were sensitive to grazing system. Herding of goats promoted more glucose concentration and preservation of muscle protein and hence superior body weights and BCS than tethered goats. The fourth experiment was done to determine the effects of grazing and housing management systems on the activity of creatine kinase (CK) and cortisol concentration, and chevon quality. Further, the effect of muscle type [Muscularis longissimus thoracis et. Lumborum (LTL) and triceps brachii (TB)] on chevon quality was also investigated. Forty eight castrated Nguni goats aged 6- 7 months were randomly allocated to tethering (n=24) and herding (n=24) treatments. Floor type affected meat (P<0.05) pH24. Tethered goats had higher (P < 0.05) L* and CL percent than herded goats. Muscle type had a significant influence (P < 0.05) on a*, WBSF and pH. It was observed and concluded that T resulted in higher L* and more CL percent whilst SF lowered the pH24 of chevon; at the same time meat from the TB muscle was more tender, despite having a higher pH24 and more CL percent relative to LTH cuts. The fifth experiment was done to determine the effect of grazing and floor type on fatty acid composition of chevon from tethered and herded Nguni goats. Floor type had no effect on fatty acid composition. Oleic, stearic, palmitic and linoleic were the major fatty acids. Chevon from tethered goats had higher (P < 0.05) proportions of long chain polyunsaturated fatty acids (PUFAs): eicosapentaenoic, docosapentaenoic, docosahexaenoic, conjugated linoleic acid (CLA) and more total SFA, total PUFA, total Omega- 6 and total omega 3 fatty acids than herded goats. On the other hand, chevon from herded goats had more (P < 0.05) C18:1c9, C18:2t9, 12 (n-6), C20:3c11, 14, 17 (n-3) and total MUFA than tethered goats. However, there was no difference (P > 0.05) in the PUFA: SFA and n-6/n-3 fatty acid ratios between the herded and tethered goats. It was concluded that tethering promoted higher proportions of beneficial PUFAs which were more in TB than LTH muscle. The overall conclusions from the whole study were that goat manure is an important source of GHG with high CH4 being emitted from earth floors of herded goats. High CO2 and N2O are emitted from SF of herded and tethered goats, respectively. There were no major differences in meat quality between herded and tethered goats. However, herding promoted more live weight gain than tethering. On the other hand, tethering promoted more beneficial fatty acids. Therefore depending on the objective of the enterprise, smallholder farmers can safely tether or herd their goats. Further, there is need to develop technologies to harness CH4 from goat manure.
- Full Text:
- Date Issued: 2016
The effect of Acacia karroo tree density on grass species composition, forage yield and quality in different rainfall regimes in the Eastern Cape, South Africa
- Authors: De Ridder, Cornelius Henry
- Date: 2016
- Subjects: Grasses -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/2858 , vital:20357
- Description: It is widely believed that Acacia karroo Hayne trees compete with and negatively affect the production of grasses in their immediate surroundings. This perception formed as a result of observations by farmers of their veld as well as some research. The complexity of plant interactions in different conditions required that research be done to better explain the extent of grass and tree interactions. In response to this need, the effect of a range of Acacia karroo densities on grass production was tested in areas of differing rainfall. Results emphasize the complexity of such plant interactions but highlight rainfall as influencing the effect of tree density on grass production and grass quality. Study sites were chosen with significant differences in tree density and rainfall and this was found to be concomitant with significant differences in grass yield and crude protein (p < 0.001). Grass yield (mass produced) was negatively correlated with tree density (p < 0.001) and was affected by rainfall. High tree density reduced grass yield at the lower rainfall sites, but a reduction in yield was only recorded during dry conditions in the higher rainfall areas. By contrast, the crude protein content of grasses was positively correlated to tree density (p < 0.001). However, as with yield, rainfall played an important part in the strength of the correlation. Soil properties such as temperature (-) (p = 0.011), phosphorus content (+) (p = 0.006), calcium concentration (+) (p = 0.005), acid saturation (-) (p = 0.018), and soil pH (+) (p = 0.008) were also significantly correlated to tree density. Tree density enriched the soil, subsequently benefitting grass quality. The study sites investigated, had different plant communities and environmental conditions with Cradock, Kubusi Drift and Kei Mouth having unique communities and conditions while Adelaide and Cathcart could not be separated in either. Cradock was the driest site and the vegetation was dominated by both grasses and karroid shrubs, differing in pattern and process from the other sites. The Kubusi Drift site had high tree densities, to the extent that the trees altered the grass species composition. The effects of rainfall on grass yield and quality exceeded that of community composition differences.
- Full Text:
- Date Issued: 2016
- Authors: De Ridder, Cornelius Henry
- Date: 2016
- Subjects: Grasses -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , DPhil
- Identifier: http://hdl.handle.net/10948/2858 , vital:20357
- Description: It is widely believed that Acacia karroo Hayne trees compete with and negatively affect the production of grasses in their immediate surroundings. This perception formed as a result of observations by farmers of their veld as well as some research. The complexity of plant interactions in different conditions required that research be done to better explain the extent of grass and tree interactions. In response to this need, the effect of a range of Acacia karroo densities on grass production was tested in areas of differing rainfall. Results emphasize the complexity of such plant interactions but highlight rainfall as influencing the effect of tree density on grass production and grass quality. Study sites were chosen with significant differences in tree density and rainfall and this was found to be concomitant with significant differences in grass yield and crude protein (p < 0.001). Grass yield (mass produced) was negatively correlated with tree density (p < 0.001) and was affected by rainfall. High tree density reduced grass yield at the lower rainfall sites, but a reduction in yield was only recorded during dry conditions in the higher rainfall areas. By contrast, the crude protein content of grasses was positively correlated to tree density (p < 0.001). However, as with yield, rainfall played an important part in the strength of the correlation. Soil properties such as temperature (-) (p = 0.011), phosphorus content (+) (p = 0.006), calcium concentration (+) (p = 0.005), acid saturation (-) (p = 0.018), and soil pH (+) (p = 0.008) were also significantly correlated to tree density. Tree density enriched the soil, subsequently benefitting grass quality. The study sites investigated, had different plant communities and environmental conditions with Cradock, Kubusi Drift and Kei Mouth having unique communities and conditions while Adelaide and Cathcart could not be separated in either. Cradock was the driest site and the vegetation was dominated by both grasses and karroid shrubs, differing in pattern and process from the other sites. The Kubusi Drift site had high tree densities, to the extent that the trees altered the grass species composition. The effects of rainfall on grass yield and quality exceeded that of community composition differences.
- Full Text:
- Date Issued: 2016