Factors contributing to relapse of adult drug users in Buffalo City Municipality Metropolitan, South Africa
- Authors: Charlie, Thobeka V
- Date: 20xx
- Subjects: Substance abuse
- Language: English
- Type: Thesis , Masters , MPH
- Identifier: http://hdl.handle.net/10353/18380 , vital:42258
- Description: According to the WHO [2014], one in every 14 people is regular users of drugs, adding up to a total of 3.74 million people (taken as a percentage of the population as of 2013). While the United Nations Office on Drug Crimes (UNDOC) revealed that in 2015, 167,750 people have died due to direct use of drugs, the patterns of drug use have increased from 1.3% to 9.8% in 2018 (UNDOC, 2018:49-51). The Eastern Cape is one of the poorest provinces of South Africa characterized by a poor primary and secondary education system, a lack of basic facilities, and poor transport infrastructure. It is evident that South Africa in general, and the Eastern Cape in particular, is experiencing a major problem with drug and substance abuse, which is especially common in school-going children. Furthermore, the Eastern Cape have limited access to specialized drug rehabilitative services due to the geographical location of existing services and the cost associated with travelling. Rehabilitation centres are available in both the State-funded and privately-owned institutions, yet the researcher was perplexed as to why, despite the proven effectiveness of the rehabilitation program in the private health care facility, relapse of the drug abusers in the Eastern Cape continues to occur. This study aimed to explore and describe the reasons why adult drug abusers who previously completed a detoxification program at Clinic A in Buffalo City Municipality, relapse after discharge. Understanding the reasons or factors of relapse assisted in the formulation of recommendations to adjust the program and prevent or reduce relapses. In this study, a qualitative, descriptive, contextual and exploratory, qualitative research design was followed to gain insight into and understand the reasons that contributed to the relapse of the adult drug abuser in a private health care facility in the Eastern Cape. 9 The population was defined as the entire group of persons who met the inclusion criteria, who relapsed after successful completion of a drug detoxification program. The sample consisted of 25 relapsed persons who were willing to participate. In Phase 1 of the study, the researcher invited relapsed adult abusers who were readmitted for the detoxification program from January to December 2019 to participate in an individual interview. The data was then reduced into patterns, categories and themes by clustering and coding the data according to Tesch’s steps of analysis. In Phase 2 of the study, the researcher critically analysed the detoxification program currently used in the private health care facility. National and international articles and best-practice standards were also consulted. Finally, a literature control was done to place the findings of the study in the context of what was already known. In the phenomenology, the literature should be reviewed after data collection and analysis so that the information in the literature does not influence the researcher in any way. In phase 3 of the study, the researcher wrote recommendations to improve the detoxification program at Clinic A [BCM].
- Full Text:
- Date Issued: 20xx
- Authors: Charlie, Thobeka V
- Date: 20xx
- Subjects: Substance abuse
- Language: English
- Type: Thesis , Masters , MPH
- Identifier: http://hdl.handle.net/10353/18380 , vital:42258
- Description: According to the WHO [2014], one in every 14 people is regular users of drugs, adding up to a total of 3.74 million people (taken as a percentage of the population as of 2013). While the United Nations Office on Drug Crimes (UNDOC) revealed that in 2015, 167,750 people have died due to direct use of drugs, the patterns of drug use have increased from 1.3% to 9.8% in 2018 (UNDOC, 2018:49-51). The Eastern Cape is one of the poorest provinces of South Africa characterized by a poor primary and secondary education system, a lack of basic facilities, and poor transport infrastructure. It is evident that South Africa in general, and the Eastern Cape in particular, is experiencing a major problem with drug and substance abuse, which is especially common in school-going children. Furthermore, the Eastern Cape have limited access to specialized drug rehabilitative services due to the geographical location of existing services and the cost associated with travelling. Rehabilitation centres are available in both the State-funded and privately-owned institutions, yet the researcher was perplexed as to why, despite the proven effectiveness of the rehabilitation program in the private health care facility, relapse of the drug abusers in the Eastern Cape continues to occur. This study aimed to explore and describe the reasons why adult drug abusers who previously completed a detoxification program at Clinic A in Buffalo City Municipality, relapse after discharge. Understanding the reasons or factors of relapse assisted in the formulation of recommendations to adjust the program and prevent or reduce relapses. In this study, a qualitative, descriptive, contextual and exploratory, qualitative research design was followed to gain insight into and understand the reasons that contributed to the relapse of the adult drug abuser in a private health care facility in the Eastern Cape. 9 The population was defined as the entire group of persons who met the inclusion criteria, who relapsed after successful completion of a drug detoxification program. The sample consisted of 25 relapsed persons who were willing to participate. In Phase 1 of the study, the researcher invited relapsed adult abusers who were readmitted for the detoxification program from January to December 2019 to participate in an individual interview. The data was then reduced into patterns, categories and themes by clustering and coding the data according to Tesch’s steps of analysis. In Phase 2 of the study, the researcher critically analysed the detoxification program currently used in the private health care facility. National and international articles and best-practice standards were also consulted. Finally, a literature control was done to place the findings of the study in the context of what was already known. In the phenomenology, the literature should be reviewed after data collection and analysis so that the information in the literature does not influence the researcher in any way. In phase 3 of the study, the researcher wrote recommendations to improve the detoxification program at Clinic A [BCM].
- Full Text:
- Date Issued: 20xx
Hegemonic conceptualisations of contestation in the Middle East: a case study of Iraq
- Authors: Kwitshi, Aviwe
- Date: 200
- Subjects: Terrorism Insurgency
- Language: English
- Type: Thesis , Masters , MSoc. Sci (Political Science)
- Identifier: http://hdl.handle.net/10353/18130 , vital:42235
- Description: This dissertation illustrated how the production of discourse defining ‘terrorism’ evolved after the emergence of the United States as hegemon, a position that enabled it to develop meaning narratives to arrive at discursive constructs that were selfrewarding, in that they justified its invasion of Iraq in 2003. This study was able to analyse the construction of the ‘war on terror’ discourse used about the Middle East (ME) as a result of the US hegemonic position, using both Gramsci’s analysis of discourse and Foucault’s concepts of power relations. Gramsci proposes the production of discourses through the concept of ’hegemony’. On the other hand, for Foucault (1980: 93), ‘‘relations of power cannot in themselves be established, consolidated nor implemented without the production, accumulation, circulation and functioning of a discourse’’. This study focuses on the period after World War II, drawing on events in the Middle East, in particular Iraq, and examining the influence of the US in the region during this period. In addition, this study addresses the conceptualisation of ‘terrorism’ and discourse around this phenomenon as a function of power and a generally accepted outcome of the exercise of hegemony. The study illustrates how power works through discourse based on Foucault’s conceptualisation of the relationship between power and discourse, and the hegemon’s intention of utilising its discursive power in shaping the views and actions of others.
- Full Text:
- Date Issued: 200
- Authors: Kwitshi, Aviwe
- Date: 200
- Subjects: Terrorism Insurgency
- Language: English
- Type: Thesis , Masters , MSoc. Sci (Political Science)
- Identifier: http://hdl.handle.net/10353/18130 , vital:42235
- Description: This dissertation illustrated how the production of discourse defining ‘terrorism’ evolved after the emergence of the United States as hegemon, a position that enabled it to develop meaning narratives to arrive at discursive constructs that were selfrewarding, in that they justified its invasion of Iraq in 2003. This study was able to analyse the construction of the ‘war on terror’ discourse used about the Middle East (ME) as a result of the US hegemonic position, using both Gramsci’s analysis of discourse and Foucault’s concepts of power relations. Gramsci proposes the production of discourses through the concept of ’hegemony’. On the other hand, for Foucault (1980: 93), ‘‘relations of power cannot in themselves be established, consolidated nor implemented without the production, accumulation, circulation and functioning of a discourse’’. This study focuses on the period after World War II, drawing on events in the Middle East, in particular Iraq, and examining the influence of the US in the region during this period. In addition, this study addresses the conceptualisation of ‘terrorism’ and discourse around this phenomenon as a function of power and a generally accepted outcome of the exercise of hegemony. The study illustrates how power works through discourse based on Foucault’s conceptualisation of the relationship between power and discourse, and the hegemon’s intention of utilising its discursive power in shaping the views and actions of others.
- Full Text:
- Date Issued: 200
Modelling false positive reduction in maritime object detection
- Authors: Nkele, Nosiphiwo
- Date: 20xx
- Subjects: Computer vision Neural networks (Computer science)
- Language: English
- Type: Thesis , Masters , MSc (Computer Science )
- Identifier: http://hdl.handle.net/10353/17168 , vital:40862
- Description: Target detection has become a very significant research area in computer vision with its applications in military, maritime surveillance, and defense and security. Maritime target detection during critical sea conditions produces a number of false positives when using the existing algorithms due to sea waves, dynamic nature of the ocean, camera motion, sea glint, sensor noise, sea spray, swell and the presence of birds. The main question that has been addressed in this research is how can object detection be improved in maritime environment by reducing false positives and promoting detection rate. Most of Previous work on object detection still fails to address the problem of false positives and false negatives due to background clutter. Most of the researchers tried to reduce false positives by applying filters but filtering degrades the quality of an image leading to more false alarms during detection. As much as radar technology has previously been the most utilized method, it still fails to detect very small objects and it may be applied in special circumstances. In trying to improve the implementation of target detection in maritime, empirical research method was proposed to answer questions about existing target detection algorithms and techniques used to reduce false positives in object detection. Visible images were retrained on a pre-trained Faster R-CNN with inception v2. The pre-trained model was retrained on five different sample data with increasing size, however for the last two samples the data was duplicated to increase size. For testing purposes 20 test images were utilized to evaluate all the models. The results of this study showed that the deep learning method used performed best in detecting maritime vessels and the increase of dataset improved detection performance and false positives were reduced. The duplication of images did not yield the best results; however, the results were promising for the first three models with increasing data.
- Full Text:
- Date Issued: 20xx
- Authors: Nkele, Nosiphiwo
- Date: 20xx
- Subjects: Computer vision Neural networks (Computer science)
- Language: English
- Type: Thesis , Masters , MSc (Computer Science )
- Identifier: http://hdl.handle.net/10353/17168 , vital:40862
- Description: Target detection has become a very significant research area in computer vision with its applications in military, maritime surveillance, and defense and security. Maritime target detection during critical sea conditions produces a number of false positives when using the existing algorithms due to sea waves, dynamic nature of the ocean, camera motion, sea glint, sensor noise, sea spray, swell and the presence of birds. The main question that has been addressed in this research is how can object detection be improved in maritime environment by reducing false positives and promoting detection rate. Most of Previous work on object detection still fails to address the problem of false positives and false negatives due to background clutter. Most of the researchers tried to reduce false positives by applying filters but filtering degrades the quality of an image leading to more false alarms during detection. As much as radar technology has previously been the most utilized method, it still fails to detect very small objects and it may be applied in special circumstances. In trying to improve the implementation of target detection in maritime, empirical research method was proposed to answer questions about existing target detection algorithms and techniques used to reduce false positives in object detection. Visible images were retrained on a pre-trained Faster R-CNN with inception v2. The pre-trained model was retrained on five different sample data with increasing size, however for the last two samples the data was duplicated to increase size. For testing purposes 20 test images were utilized to evaluate all the models. The results of this study showed that the deep learning method used performed best in detecting maritime vessels and the increase of dataset improved detection performance and false positives were reduced. The duplication of images did not yield the best results; however, the results were promising for the first three models with increasing data.
- Full Text:
- Date Issued: 20xx
Poverty alleviation strategies and their impact on the livelihoods in Gqumahashe Village (Alice, Eastern Cape) South Africa
- Authors: Thengela, Ntombizanele
- Date: 20xx
- Subjects: Poverty Alleviation
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/18291 , vital:42249
- Description: There are between forty-five to fifty-seven percent (45-57%), South Africans who are engulfed in poverty. In an attempt to identify policy instruments that could help change the status quo, the South African government introduced various strategies to alleviate poverty and some have been seen to be relatively successful. The aim of the study was to identify poverty alleviation strategies in Gqhumahashe village and their impact on the livelihoods of the inhabitants. A qualitative approach and a phenomenological research design were used in conducting this study as these approaches allowed participants to share first-hand experiences regarding the issue under investigation. Purposive sampling method was employed to select participants for the study. Twenty-five participants were selected to participate in this study to share their experience as beneficiaries of these poverty alleviation programmes. The data obtained through in-depth interviews were analysed thematically as well as discussed and supported by the relevant literature. Thematic analysis was used to analyse audiotaped interviews. The findings revealed that there are poverty alleviation strategies in place in Gqhumahashe village. Those strategies include free basic and higher education, school feeding schemes, early childhood development and Kari-Gude literacy programmes for elderly. There are also projects such as the Expanded Public Works Programmes; Community Works Projects and the Municipality Infrastructure Grants. Lastly, Free Health Care Services and Social Welfare Service or Social Grants are strategies that are available in the village to alleviate poverty. The findings also revealed that there is high rate of unemployment in the village. In conclusion, the participants were very happy about the Municipality Infrastructure Grant because it has opened many opportunities for the inhabitants to be employed and it improved the road infrastructure. The recommendation drawn from the study, were that government should create more sustainable jobs for the disadvantaged. Government should also create jobs for the unemployed young graduates. The study recommends that these programmes to alleviate poverty should be extended to other villages across South Afric
- Full Text:
- Date Issued: 20xx
- Authors: Thengela, Ntombizanele
- Date: 20xx
- Subjects: Poverty Alleviation
- Language: English
- Type: Thesis , Masters , MSW
- Identifier: http://hdl.handle.net/10353/18291 , vital:42249
- Description: There are between forty-five to fifty-seven percent (45-57%), South Africans who are engulfed in poverty. In an attempt to identify policy instruments that could help change the status quo, the South African government introduced various strategies to alleviate poverty and some have been seen to be relatively successful. The aim of the study was to identify poverty alleviation strategies in Gqhumahashe village and their impact on the livelihoods of the inhabitants. A qualitative approach and a phenomenological research design were used in conducting this study as these approaches allowed participants to share first-hand experiences regarding the issue under investigation. Purposive sampling method was employed to select participants for the study. Twenty-five participants were selected to participate in this study to share their experience as beneficiaries of these poverty alleviation programmes. The data obtained through in-depth interviews were analysed thematically as well as discussed and supported by the relevant literature. Thematic analysis was used to analyse audiotaped interviews. The findings revealed that there are poverty alleviation strategies in place in Gqhumahashe village. Those strategies include free basic and higher education, school feeding schemes, early childhood development and Kari-Gude literacy programmes for elderly. There are also projects such as the Expanded Public Works Programmes; Community Works Projects and the Municipality Infrastructure Grants. Lastly, Free Health Care Services and Social Welfare Service or Social Grants are strategies that are available in the village to alleviate poverty. The findings also revealed that there is high rate of unemployment in the village. In conclusion, the participants were very happy about the Municipality Infrastructure Grant because it has opened many opportunities for the inhabitants to be employed and it improved the road infrastructure. The recommendation drawn from the study, were that government should create more sustainable jobs for the disadvantaged. Government should also create jobs for the unemployed young graduates. The study recommends that these programmes to alleviate poverty should be extended to other villages across South Afric
- Full Text:
- Date Issued: 20xx
The Factors Influencing the Behavioural Intention of Overweight Adults to Use Wearable Devices for Sustained Health Monitoring
- Authors: Ogundele , Oluwaseyi Caleb
- Date: 20xx
- Subjects: Digital media
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: http://hdl.handle.net/10353/13903 , vital:39725
- Description: The volume of wearable devices that can be used for sustained health monitoring purposes is continuously growing within the healthcare sector. These devices allow users to track their own activity levels in real time. However, there are factors that may inhibit the behavioural intention to sustain the use of wearable devices for health monitoring in the long term by overweight adults. These factors include privacy concerns, costs of obtaining wearable devices, theft, frequent charging and short battery life of wearable devices and bulkiness of some wearable devices. It is against this backdrop that this study examined the factors influencing the behavioural intention of overweight adults in South Africa to make use of wearable devices for sustained health monitoring. This research made use of the Expectation Confirmation Model (ECM) as the theoretical foundation of the study. In achieving the aim of this study, a qualitative research approach was used. The purposive sampling technique was selected to identify twenty (20) overweight adults (aged 18-59 years) who are using wearable devices in East London, South Africa. Interviews were conducted with the twenty participants to identify the factors that will influence their behavioural intention to make use of wearable devices to monitor their health. Through thematic analysis, data provided by participants was grouped and summarised into relevant themes to answer the main research question. The study developed a framework that identifies the factors influencing behavioural intention of overweight adults to continue using wearable devices for sustained health monitoring. The factors that were identified include confirmation, perceived usefulness and satisfaction of wearable devices for sustained health monitoring. The realisation of weight loss, monitoring of daily activities and calories through the use of wearable devices was found to positively influence the behavioural intention of the users of wearable devices to continue their usage. However, the major factors that may inhibit the continuous usage of wearable devices for sustained health monitoring are privacy concerns, costs of obtaining wearable devices, theft, frequent charging and short battery life of wearable devices and bulkiness of some wearable devices. Based on the findings, the study recommended the following: (1) the wearable device manufacturers should assure the users of their privacy and confidentiality by providing the needed ii | P a g e interfaces for this purpose; (2) the manufacturers of wearable devices should make the devices less bulky so that they can be more portable; (3) South African government should provide security operatives in isolated areas where people are not feeling secure; (4) the manufacturers of wearable devices make the purchase prices of wearable devices more affordable, especially for low income people; and (5) the manufacturers of wearable devices should improve on battery life and quality of wearable devices so that the devices are more time efficient and require less charging of the devices.
- Full Text:
- Date Issued: 20xx
- Authors: Ogundele , Oluwaseyi Caleb
- Date: 20xx
- Subjects: Digital media
- Language: English
- Type: Thesis , Masters , MCom (Information Systems)
- Identifier: http://hdl.handle.net/10353/13903 , vital:39725
- Description: The volume of wearable devices that can be used for sustained health monitoring purposes is continuously growing within the healthcare sector. These devices allow users to track their own activity levels in real time. However, there are factors that may inhibit the behavioural intention to sustain the use of wearable devices for health monitoring in the long term by overweight adults. These factors include privacy concerns, costs of obtaining wearable devices, theft, frequent charging and short battery life of wearable devices and bulkiness of some wearable devices. It is against this backdrop that this study examined the factors influencing the behavioural intention of overweight adults in South Africa to make use of wearable devices for sustained health monitoring. This research made use of the Expectation Confirmation Model (ECM) as the theoretical foundation of the study. In achieving the aim of this study, a qualitative research approach was used. The purposive sampling technique was selected to identify twenty (20) overweight adults (aged 18-59 years) who are using wearable devices in East London, South Africa. Interviews were conducted with the twenty participants to identify the factors that will influence their behavioural intention to make use of wearable devices to monitor their health. Through thematic analysis, data provided by participants was grouped and summarised into relevant themes to answer the main research question. The study developed a framework that identifies the factors influencing behavioural intention of overweight adults to continue using wearable devices for sustained health monitoring. The factors that were identified include confirmation, perceived usefulness and satisfaction of wearable devices for sustained health monitoring. The realisation of weight loss, monitoring of daily activities and calories through the use of wearable devices was found to positively influence the behavioural intention of the users of wearable devices to continue their usage. However, the major factors that may inhibit the continuous usage of wearable devices for sustained health monitoring are privacy concerns, costs of obtaining wearable devices, theft, frequent charging and short battery life of wearable devices and bulkiness of some wearable devices. Based on the findings, the study recommended the following: (1) the wearable device manufacturers should assure the users of their privacy and confidentiality by providing the needed ii | P a g e interfaces for this purpose; (2) the manufacturers of wearable devices should make the devices less bulky so that they can be more portable; (3) South African government should provide security operatives in isolated areas where people are not feeling secure; (4) the manufacturers of wearable devices make the purchase prices of wearable devices more affordable, especially for low income people; and (5) the manufacturers of wearable devices should improve on battery life and quality of wearable devices so that the devices are more time efficient and require less charging of the devices.
- Full Text:
- Date Issued: 20xx
The impact of exchange rate volatility on manufacturing production : a case study of South Africa
- Authors: Dube, Ziphozethu
- Date: 20
- Subjects: Foreign exchange rates -- South Africa Manufacturing industries -- South Africa Industrial productivity
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/8294 , vital:32193
- Description: The study examined the impact of exchange rate volatility on manufacturing production for the period of 1994 - 2015 in South Africa. The study evaluated the literature on exchange rate volatility and manufacturing production which was conducted and resulted into specification of an empirical model. The Autoregressive Distributive Lag (ARDL) was employed towards deducing the relationship of exchange rate volatility and manufacturing production. This study made use of monthly data to examine the relationship of exchange rate volatility and manufacturing production. However, the data frequency selected, ensured an adequate number of observations and results revealed that exchange rate volatility has a negative relationship with manufacturing production in the long run, nonetheless considering South Africa as an export economy the results were consistent with Ayinde (2014) who found that this relationship is seen to exist. A positive relationship was noted within the short run period. The unstable business environment in South Africa has been worsened by the political climate and unstable policies that has a ripple effect. Due to this aspect the study recommended the need for stabilizer policies for monetary, fiscal, trade and exchange rate management. The government should properly manage the exchange rate and design suitable policies that will reduce the deviation of the exchange rate thereby encourage production. Exchange rate stability is viewed to be key for export-oriented manufacturing sectors in a macroeconomic environment. The South African economy has felt such heaviness of political unrest and polices that do not result in stability. It would be key for policymakers to be vigilant and implement such measures to get the economy ticking in the right direction.
- Full Text:
- Date Issued: 20
- Authors: Dube, Ziphozethu
- Date: 20
- Subjects: Foreign exchange rates -- South Africa Manufacturing industries -- South Africa Industrial productivity
- Language: English
- Type: Thesis , Masters , MCom
- Identifier: http://hdl.handle.net/10353/8294 , vital:32193
- Description: The study examined the impact of exchange rate volatility on manufacturing production for the period of 1994 - 2015 in South Africa. The study evaluated the literature on exchange rate volatility and manufacturing production which was conducted and resulted into specification of an empirical model. The Autoregressive Distributive Lag (ARDL) was employed towards deducing the relationship of exchange rate volatility and manufacturing production. This study made use of monthly data to examine the relationship of exchange rate volatility and manufacturing production. However, the data frequency selected, ensured an adequate number of observations and results revealed that exchange rate volatility has a negative relationship with manufacturing production in the long run, nonetheless considering South Africa as an export economy the results were consistent with Ayinde (2014) who found that this relationship is seen to exist. A positive relationship was noted within the short run period. The unstable business environment in South Africa has been worsened by the political climate and unstable policies that has a ripple effect. Due to this aspect the study recommended the need for stabilizer policies for monetary, fiscal, trade and exchange rate management. The government should properly manage the exchange rate and design suitable policies that will reduce the deviation of the exchange rate thereby encourage production. Exchange rate stability is viewed to be key for export-oriented manufacturing sectors in a macroeconomic environment. The South African economy has felt such heaviness of political unrest and polices that do not result in stability. It would be key for policymakers to be vigilant and implement such measures to get the economy ticking in the right direction.
- Full Text:
- Date Issued: 20
The title goes here
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/6048 , vital:29486
- Description: abstract with a full stop.
- Full Text:
- Date Issued: 20xx
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/6048 , vital:29486
- Description: abstract with a full stop.
- Full Text:
- Date Issued: 20xx
The title goes here
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/9776 , vital:34941
- Description: abstract with a full stop.
- Full Text: false
- Date Issued: 20xx
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/9776 , vital:34941
- Description: abstract with a full stop.
- Full Text: false
- Date Issued: 20xx
The title goes here
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5884 , vital:29414
- Description: abstract with a full stop.
- Full Text:
- Date Issued: 20xx
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/5884 , vital:29414
- Description: abstract with a full stop.
- Full Text:
- Date Issued: 20xx
The title goes here
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/10597 , vital:35631
- Description: abstract with a full stop.
- Full Text: false
- Date Issued: 20xx
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/10597 , vital:35631
- Description: abstract with a full stop.
- Full Text: false
- Date Issued: 20xx
The title goes here
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/12043 , vital:39130
- Description: abstract with a full stop.
- Full Text:
- Date Issued: 20xx
- Authors: Surname, Firstnames
- Date: 20xx
- Subjects: Folk music -- Zimbabwe
- Language: English
- Type: Thesis , Masters/Doctoral , Degree
- Identifier: http://hdl.handle.net/10353/12043 , vital:39130
- Description: abstract with a full stop.
- Full Text:
- Date Issued: 20xx
A systems approach to marketing in less developed agriculture with reference to Bululwane Irrigation Scheme
- Authors: Zenda, Sipho Macriba
- Date: 2002
- Subjects: Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11192 , http://hdl.handle.net/10353/d1001045 , Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Full Text: false
- Date Issued: 2002
- Authors: Zenda, Sipho Macriba
- Date: 2002
- Subjects: Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Language: English
- Type: Thesis , Masters , MSc Agric (Agricultural Economics)
- Identifier: vital:11192 , http://hdl.handle.net/10353/d1001045 , Farm produce -- South Africa -- Marketing , Farms, Small -- South Africa , Sustainable agriculture -- South Africa , Agricultural development projects -- South Africa , Irrigation farming -- South Africa
- Full Text: false
- Date Issued: 2002
The effects of goat kraal manure, sewage sludge and effective microorganisms on the composting of pine bark and the nutritional value of the composts
- Authors: Mupondi, Lushian Tapiwa
- Date: 2005
- Subjects: Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Language: English
- Type: Thesis , Masters , MSc Agric (Soil Science)
- Identifier: vital:11171 , http://hdl.handle.net/10353/d1001008 , Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Full Text: false
- Date Issued: 2005
- Authors: Mupondi, Lushian Tapiwa
- Date: 2005
- Subjects: Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Language: English
- Type: Thesis , Masters , MSc Agric (Soil Science)
- Identifier: vital:11171 , http://hdl.handle.net/10353/d1001008 , Compost , Fertilizers , Sewage sludge as fertilizer , Goats , Manures , Compost plants
- Full Text: false
- Date Issued: 2005
Gender perceptual differences and their effects on the implementation of policy in the prevention of HIV/AIDS in Makoni District, Zimbabwe
- Authors: Musabaeka, True Shame
- Date: 2006
- Subjects: AIDS (Disease) in women -- Zimbabwe , Sexually transmitted diseases -- Zimbabwe , Sexual consent -- Zimbabwe , Sexual behavior surveys -- Zimbabwe , Social perception -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11406 , http://hdl.handle.net/10353/308 , AIDS (Disease) in women -- Zimbabwe , Sexually transmitted diseases -- Zimbabwe , Sexual consent -- Zimbabwe , Sexual behavior surveys -- Zimbabwe , Social perception -- Zimbabwe
- Description: This study sought to establish gender perceptual differences and their effects on the implementation of Policy in the prevention of HIV/AIDS in Makoni District, Zimbabwe. The role of women as caregivers to HIV/AIDS sufferers is also highlighted and how this has deprived them towards social, political and economic development. The source of the data used was the World Health Organisation (WHO) project on Family Planning and AIDS. The sample of the study comprised of 100 men and women from Makoni District, Zimbabwe. In addition to the survey question, focus group discussions (FGDs) were conducted. The FGD data complimented the survey results with qualitative information. The objectives of the study looked at people’s attitudes, cultural practices and sexual practices. These were analysed to determine how the gender issues within them affected the HIV/AIDS prevention strategies. The five major prevention strategies focused on in this study are: · promotion of condom use; · reduction of the number of sexual partners; · sticking to one sexual partner; · control and Treatment of Sexually Transmitted Diseases (STDs); and · Voluntary Counseling and Testing (VCT) for HIV to prevent vertical transmission of the disease. Although, the majority of the women indicated that it was acceptable for a married woman to ask her husband to use condoms, this was disputed by the findings from the FGDs. Issues of trust and fidelity were raised,but many men and women reported that they were not prepared to confront one another. The FGD results revealed that the men assert that it is normal for every man to have extra marital relationships, therefore they do not see anything wrong with it. It also came out that there are women who both have no income or partner to support them financially and are living in absolute poverty. These women, if anything, are more likely to increase the number of their sexual partners than reduce them so that they increase their economic base inorder to support their families. It has been established that for effective treatment and control of STDs, there is need for both partners to cooperate and seek treatment at the same time. However, the findings from this study revealed that lack of communication between sexual partners hampered the treatment of these diseases. On the other hand, the men indicated that talking to their wives about STDs would compel them to say where they got it. On the other hand the women reported that their men would accuse them of infidelity if they told them of an STD. FGD results however revealed that men and women were prepared to have HIV testing so that they would know of their status before planning a family. The gender perceptual differences on HIV/AIDS prevention have been identified as follows: · the need for male compliance to use condoms effectively; · the fear of losing trust by suggesting condom use; and · acceptance of male promiscuity by society that perpetuates that risky behaviour and exposure to HIV/AIDS infection and lack of communication between sexual partners, are a hindrance for effective control and treatment of STDs.
- Full Text:
- Date Issued: 2006
- Authors: Musabaeka, True Shame
- Date: 2006
- Subjects: AIDS (Disease) in women -- Zimbabwe , Sexually transmitted diseases -- Zimbabwe , Sexual consent -- Zimbabwe , Sexual behavior surveys -- Zimbabwe , Social perception -- Zimbabwe
- Language: English
- Type: Thesis , Masters , M Soc Sc (Dev)
- Identifier: vital:11406 , http://hdl.handle.net/10353/308 , AIDS (Disease) in women -- Zimbabwe , Sexually transmitted diseases -- Zimbabwe , Sexual consent -- Zimbabwe , Sexual behavior surveys -- Zimbabwe , Social perception -- Zimbabwe
- Description: This study sought to establish gender perceptual differences and their effects on the implementation of Policy in the prevention of HIV/AIDS in Makoni District, Zimbabwe. The role of women as caregivers to HIV/AIDS sufferers is also highlighted and how this has deprived them towards social, political and economic development. The source of the data used was the World Health Organisation (WHO) project on Family Planning and AIDS. The sample of the study comprised of 100 men and women from Makoni District, Zimbabwe. In addition to the survey question, focus group discussions (FGDs) were conducted. The FGD data complimented the survey results with qualitative information. The objectives of the study looked at people’s attitudes, cultural practices and sexual practices. These were analysed to determine how the gender issues within them affected the HIV/AIDS prevention strategies. The five major prevention strategies focused on in this study are: · promotion of condom use; · reduction of the number of sexual partners; · sticking to one sexual partner; · control and Treatment of Sexually Transmitted Diseases (STDs); and · Voluntary Counseling and Testing (VCT) for HIV to prevent vertical transmission of the disease. Although, the majority of the women indicated that it was acceptable for a married woman to ask her husband to use condoms, this was disputed by the findings from the FGDs. Issues of trust and fidelity were raised,but many men and women reported that they were not prepared to confront one another. The FGD results revealed that the men assert that it is normal for every man to have extra marital relationships, therefore they do not see anything wrong with it. It also came out that there are women who both have no income or partner to support them financially and are living in absolute poverty. These women, if anything, are more likely to increase the number of their sexual partners than reduce them so that they increase their economic base inorder to support their families. It has been established that for effective treatment and control of STDs, there is need for both partners to cooperate and seek treatment at the same time. However, the findings from this study revealed that lack of communication between sexual partners hampered the treatment of these diseases. On the other hand, the men indicated that talking to their wives about STDs would compel them to say where they got it. On the other hand the women reported that their men would accuse them of infidelity if they told them of an STD. FGD results however revealed that men and women were prepared to have HIV testing so that they would know of their status before planning a family. The gender perceptual differences on HIV/AIDS prevention have been identified as follows: · the need for male compliance to use condoms effectively; · the fear of losing trust by suggesting condom use; and · acceptance of male promiscuity by society that perpetuates that risky behaviour and exposure to HIV/AIDS infection and lack of communication between sexual partners, are a hindrance for effective control and treatment of STDs.
- Full Text:
- Date Issued: 2006
An investigation of the efficacy of the Office of the Auditor-General in ensuring public financial accountability in the Gauteng Province
- Authors: Khumalo, Mildred Tariro
- Date: 2007
- Subjects: Finance, Public -- South Africa , Budget -- South Africa -- Gauteng , Liability (Law)
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11645 , http://hdl.handle.net/10353/283 , Finance, Public -- South Africa , Budget -- South Africa -- Gauteng , Liability (Law)
- Description: Increasing accountability is a key element in a wide variety of governance reforms, from national level, public sector restructuring, to anti corruption campaigns and to centralise service delivery at local levels. (Van Wyk, 2002:311). Financial accountability has a major effect on performance issues, and these two combined have implications on democratic accountability. It is obviously a fact that when public officials become accountable, this will have a positive effect on service delivery. The introduction of the Public Finance Management Act (PFMA) 1999 (Act 1 of 1999) as amended by Act 29 of 1999 adopts an approach to financial management, which emphasises the need for accountability of results by focusing on output and responsibility rather than the rule driven approach of the previous Exchequer Acts. One quickly realises that the PFMA aims to regulate financial management at both National and Provincial levels of government. It directs attention at revenue, expenditure, assets and liabilities and aims to see that these are managed efficiently and effectively. Public finance accountability is increasingly becoming important in the public sector. One means of effecting accountability is through auditing. For this reason the Office of the Auditor -General through the Constitution of the Republic of South Africa 1996 (Act 108 of 1996 section 216 (1)) was established to facilitate effective accountability through auditing. The Office of the Auditor -General’s role is by no means minor, for it plays a major role in curbing corruption and acts as a ‘watchdog’ of the nation over public funds. Amidst high mismanagement and misuse of public resources, as well as corruption, especially in developing countries, the major question one asks is how effective the Auditor -General can be in ensuring effective public financial management and accountability within state departments so as to improve service delivery.
- Full Text:
- Date Issued: 2007
- Authors: Khumalo, Mildred Tariro
- Date: 2007
- Subjects: Finance, Public -- South Africa , Budget -- South Africa -- Gauteng , Liability (Law)
- Language: English
- Type: Thesis , Masters , MPA
- Identifier: vital:11645 , http://hdl.handle.net/10353/283 , Finance, Public -- South Africa , Budget -- South Africa -- Gauteng , Liability (Law)
- Description: Increasing accountability is a key element in a wide variety of governance reforms, from national level, public sector restructuring, to anti corruption campaigns and to centralise service delivery at local levels. (Van Wyk, 2002:311). Financial accountability has a major effect on performance issues, and these two combined have implications on democratic accountability. It is obviously a fact that when public officials become accountable, this will have a positive effect on service delivery. The introduction of the Public Finance Management Act (PFMA) 1999 (Act 1 of 1999) as amended by Act 29 of 1999 adopts an approach to financial management, which emphasises the need for accountability of results by focusing on output and responsibility rather than the rule driven approach of the previous Exchequer Acts. One quickly realises that the PFMA aims to regulate financial management at both National and Provincial levels of government. It directs attention at revenue, expenditure, assets and liabilities and aims to see that these are managed efficiently and effectively. Public finance accountability is increasingly becoming important in the public sector. One means of effecting accountability is through auditing. For this reason the Office of the Auditor -General through the Constitution of the Republic of South Africa 1996 (Act 108 of 1996 section 216 (1)) was established to facilitate effective accountability through auditing. The Office of the Auditor -General’s role is by no means minor, for it plays a major role in curbing corruption and acts as a ‘watchdog’ of the nation over public funds. Amidst high mismanagement and misuse of public resources, as well as corruption, especially in developing countries, the major question one asks is how effective the Auditor -General can be in ensuring effective public financial management and accountability within state departments so as to improve service delivery.
- Full Text:
- Date Issued: 2007
Assessment of antibacterial potentials of Garcinia Kola seed extracts and their interactions with antibiotics
- Authors: Sibanda, Thulani
- Date: 2007
- Subjects: Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11242 , http://hdl.handle.net/10353/71 , Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants
- Description: The antibacterial potency of the extracts of the seed of Garcinia kola (bitter kola) was investigated in this study against a panel of referenced, environmental and clinical bacterial strains. The killing rates of the active extract as well as their potential for combination antibacterial therapy with standard antibiotics were also elucidated using standard procedures. The aqueous and acetone extracts of the seed were screened for activity against 27 bacterial isolates. The aqueous extract exhibited activity mainly against Gram positive organisms with Minimum inhibitory concentration (MIC) values ranging from 5 mgml-1 – 20 mgml-1, while the acetone extract showed activity against both Gram negative and Gram positive organisms with MIC values ranging from 10 mgml-1 - 0.156 mgml-1. The acetone extract also showed rapid bactericidal activity against Staphylococcus aureus ATCC 6538 with a 3.097 Log10 reduction in counts within 4 hours at 0.3125 mgml-1 and a 1.582 Log10 reduction against Proteus vulgaris CSIR 0030 at 5 mgml-1 after 1 hour. In addition, the aqueous, methanol and acetone extracts of the seeds also exhibited activity against four clinical strains of Staphylococcus isolated from wound sepsis specimens. The MIC values for the aqueous extract were 10 mgml-1 for all the isolates while the acetone and methanol extracts had lower values ranging from 0.3125 - 0.625 mgml-1. The acetone extract was strongly bactericidal against Staphylococcus aureus OKOH3 resulting in a 2.70 Log10 reduction in counts at 1.25 mgml-1 within 4 hours of exposure and a complete elimination of the organism after 8 hours. The bactericidal vi activity of the same extract against Staphylococcus aureus OKOH1 was weak, achieving only a 2.92 Log10 reduction in counts at 1.25 mgml-1 (4× MIC) in 24 hours. In the test for interactions between the acetone extract of the seeds and antibiotics, synergistic interactions were observed largely against Gram positive organisms using the FIC indices, (indices of 0.52 - 0.875) with combinations against Gram negatives yielding largely antagonistic interactions (indices of 2.0 to 5.0). Synergy (≥ 1000 times or ≥ 3 Log10 potentiation of the bactericidal activity) against both Gram negative and Gram positive organisms was detected by time kill assays mainly involving the antibiotics tetracycline, chloramphenicol, amoxycillin and penicillin G. Combinations involving erythromycin and ciprofloxacin consistently gave antagonistic or indifferent interactions. We conclude that the acetone extract of Garcinia kola seeds possess strong bactericidal activities against both Gram positive and Gram negative organisms and can be therapeutically useful in the treatment of bacterial infections including the problematic staphylococcal wound infections. In addition, the acetone extract can be a potential source of broad spectrum resistance modifying compounds that can potentially improve the performance of antibiotics in the treatment of drug resistant infections.
- Full Text:
- Date Issued: 2007
- Authors: Sibanda, Thulani
- Date: 2007
- Subjects: Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants
- Language: English
- Type: Thesis , Masters , MSc (Microbiology)
- Identifier: vital:11242 , http://hdl.handle.net/10353/71 , Drug resistance in microorganisms , Garcinia , Antibiotics , Medicinal plants
- Description: The antibacterial potency of the extracts of the seed of Garcinia kola (bitter kola) was investigated in this study against a panel of referenced, environmental and clinical bacterial strains. The killing rates of the active extract as well as their potential for combination antibacterial therapy with standard antibiotics were also elucidated using standard procedures. The aqueous and acetone extracts of the seed were screened for activity against 27 bacterial isolates. The aqueous extract exhibited activity mainly against Gram positive organisms with Minimum inhibitory concentration (MIC) values ranging from 5 mgml-1 – 20 mgml-1, while the acetone extract showed activity against both Gram negative and Gram positive organisms with MIC values ranging from 10 mgml-1 - 0.156 mgml-1. The acetone extract also showed rapid bactericidal activity against Staphylococcus aureus ATCC 6538 with a 3.097 Log10 reduction in counts within 4 hours at 0.3125 mgml-1 and a 1.582 Log10 reduction against Proteus vulgaris CSIR 0030 at 5 mgml-1 after 1 hour. In addition, the aqueous, methanol and acetone extracts of the seeds also exhibited activity against four clinical strains of Staphylococcus isolated from wound sepsis specimens. The MIC values for the aqueous extract were 10 mgml-1 for all the isolates while the acetone and methanol extracts had lower values ranging from 0.3125 - 0.625 mgml-1. The acetone extract was strongly bactericidal against Staphylococcus aureus OKOH3 resulting in a 2.70 Log10 reduction in counts at 1.25 mgml-1 within 4 hours of exposure and a complete elimination of the organism after 8 hours. The bactericidal vi activity of the same extract against Staphylococcus aureus OKOH1 was weak, achieving only a 2.92 Log10 reduction in counts at 1.25 mgml-1 (4× MIC) in 24 hours. In the test for interactions between the acetone extract of the seeds and antibiotics, synergistic interactions were observed largely against Gram positive organisms using the FIC indices, (indices of 0.52 - 0.875) with combinations against Gram negatives yielding largely antagonistic interactions (indices of 2.0 to 5.0). Synergy (≥ 1000 times or ≥ 3 Log10 potentiation of the bactericidal activity) against both Gram negative and Gram positive organisms was detected by time kill assays mainly involving the antibiotics tetracycline, chloramphenicol, amoxycillin and penicillin G. Combinations involving erythromycin and ciprofloxacin consistently gave antagonistic or indifferent interactions. We conclude that the acetone extract of Garcinia kola seeds possess strong bactericidal activities against both Gram positive and Gram negative organisms and can be therapeutically useful in the treatment of bacterial infections including the problematic staphylococcal wound infections. In addition, the acetone extract can be a potential source of broad spectrum resistance modifying compounds that can potentially improve the performance of antibiotics in the treatment of drug resistant infections.
- Full Text:
- Date Issued: 2007
Design and implementation of a network revenue management architecture for marginalised communities
- Authors: Tarwireyi, Paul
- Date: 2007
- Subjects: Community development -- South Africa -- Eastern Cape , Computer network architectures -- South Africa -- Design and construction , Computer network protocols -- South Africa -- Eastern Cape -- Design and construction , Revenue management , Computer networks -- Social aspects
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11374 , http://hdl.handle.net/10353/72 , Community development -- South Africa -- Eastern Cape , Computer network architectures -- South Africa -- Design and construction , Computer network protocols -- South Africa -- Eastern Cape -- Design and construction , Revenue management , Computer networks -- Social aspects
- Description: Rural Internet connectivity projects aimed at bridging the digital divide have mushroomed across many developing countries. Most of the projects are deployed as community centred projects. In most of the cases the initial deployment of these projects is funded by governments, multilateral institutions and non-governmental organizations. After the initial deployment, financial sustainability remains one of the greatest challenges facing these projects. In the light of this, externally funded ICT4D interventions should just be used for “bootstrapping” purposes. The communities should be “groomed” to take care of and sustain these projects, eliminating as soon as possible a dependency on external funding. This master thesis presents the design and the implementation of a generic architecture for the management of the costs associated with running a computer network connected to the Internet, The proposed system, called the Network Revenue Management System, enables a network to generate revenue, by charging users for the utilization of network resources. The novelty of the system resides in its flexibility and adaptability, which allow the exploration of both conventional and non-conventional billing options, via the use of suitable ‘adapters’. The final goal of the exploration made possible by this system is the establishment of what is regarded as equitable charging in rural, marginalized communities - such as the community in Dwesa, South Africa.
- Full Text:
- Date Issued: 2007
- Authors: Tarwireyi, Paul
- Date: 2007
- Subjects: Community development -- South Africa -- Eastern Cape , Computer network architectures -- South Africa -- Design and construction , Computer network protocols -- South Africa -- Eastern Cape -- Design and construction , Revenue management , Computer networks -- Social aspects
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11374 , http://hdl.handle.net/10353/72 , Community development -- South Africa -- Eastern Cape , Computer network architectures -- South Africa -- Design and construction , Computer network protocols -- South Africa -- Eastern Cape -- Design and construction , Revenue management , Computer networks -- Social aspects
- Description: Rural Internet connectivity projects aimed at bridging the digital divide have mushroomed across many developing countries. Most of the projects are deployed as community centred projects. In most of the cases the initial deployment of these projects is funded by governments, multilateral institutions and non-governmental organizations. After the initial deployment, financial sustainability remains one of the greatest challenges facing these projects. In the light of this, externally funded ICT4D interventions should just be used for “bootstrapping” purposes. The communities should be “groomed” to take care of and sustain these projects, eliminating as soon as possible a dependency on external funding. This master thesis presents the design and the implementation of a generic architecture for the management of the costs associated with running a computer network connected to the Internet, The proposed system, called the Network Revenue Management System, enables a network to generate revenue, by charging users for the utilization of network resources. The novelty of the system resides in its flexibility and adaptability, which allow the exploration of both conventional and non-conventional billing options, via the use of suitable ‘adapters’. The final goal of the exploration made possible by this system is the establishment of what is regarded as equitable charging in rural, marginalized communities - such as the community in Dwesa, South Africa.
- Full Text:
- Date Issued: 2007
Development of a web-based interface for a wireless sensor network monitoring system
- Authors: Gumbo, Sibukele
- Date: 2007
- Subjects: Wireless LAN , Sensor networks , Wireless communication systems , Web sites -- Design , User interfaces (Computer systems)
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11372 , http://hdl.handle.net/10353/68 , Wireless LAN , Sensor networks , Wireless communication systems , Web sites -- Design , User interfaces (Computer systems)
- Description: In the recent past, wireless sensor technology has undergone advancements in its autonomous data collecting aspects, and has become an area worth investigating in relation to structural monitoring applications. The system described in this thesis aims at acquiring, storing and displaying overhead transmission line related data collected from a wireless sensor network. Open source tools were used in its development and implementation. The inherent linearly aligned topology of transmission line monitoring devices is not without shortcomings; hence analysis of linear node placement, hardware and software components was carried out to determine the feasibility of the system. Their limited data processing capabilities has motivated the development of a post processing wireless sensor application in order to present any collected structural data in an understandable format.
- Full Text:
- Date Issued: 2007
- Authors: Gumbo, Sibukele
- Date: 2007
- Subjects: Wireless LAN , Sensor networks , Wireless communication systems , Web sites -- Design , User interfaces (Computer systems)
- Language: English
- Type: Thesis , Masters , MSc (Computer Science)
- Identifier: vital:11372 , http://hdl.handle.net/10353/68 , Wireless LAN , Sensor networks , Wireless communication systems , Web sites -- Design , User interfaces (Computer systems)
- Description: In the recent past, wireless sensor technology has undergone advancements in its autonomous data collecting aspects, and has become an area worth investigating in relation to structural monitoring applications. The system described in this thesis aims at acquiring, storing and displaying overhead transmission line related data collected from a wireless sensor network. Open source tools were used in its development and implementation. The inherent linearly aligned topology of transmission line monitoring devices is not without shortcomings; hence analysis of linear node placement, hardware and software components was carried out to determine the feasibility of the system. Their limited data processing capabilities has motivated the development of a post processing wireless sensor application in order to present any collected structural data in an understandable format.
- Full Text:
- Date Issued: 2007
Enhancing phosphorus availability in some phosphate fixing soils of the Transkei region, South Africa using goat manure
- Authors: Gichangi, Elias Maina
- Date: 2007
- Subjects: Phosphorus in agriculture , Soils -- Phosphorus content , Phosphatic fertilizers , Soils -- Phosphorus content -- South Africa -- Transkei
- Language: English
- Type: Thesis , Doctoral , PhD (Soil Science)
- Identifier: vital:11960 , http://hdl.handle.net/10353/80 , Phosphorus in agriculture , Soils -- Phosphorus content , Phosphatic fertilizers , Soils -- Phosphorus content -- South Africa -- Transkei
- Description: Low availability of soil phosphorus (P) caused by strong sorption of P is a major constraint to agricultural production in most South African soils, particularly those from the high rainfall areas. The aim of this study was therefore to investigate whether combined addition of goat manure with inorganic P fertilizers could enhance P availability in some P fixing soils of the Transkei region, South Africa. The study addressed the following specific objectives (i) to assess P sorption capacities and requirements of selected soils and their relationship with selected soil properties and single point sorption test, (ii) to assess the effects of goat manure and lime addition on P sorption properties of selected P fixing soils (iii) to assess the temporal changes in concentration of inorganic and microbial biomass P fractions following application of inorganic fertilizer P with goat manure in a laboratory incubation experiment, and, (iv) to assess the effects of goat manure application with inorganic phosphate on inorganic and microbial biomass P fractions, P uptake and dry matter yield of maize. Sorption maxima (Smax) of seven soils examined ranged from 192.3 to 909.1 (mg P kg-1) and were highly and positively correlated with sorption affinity constant (r = 0.93, p = 0.01) and organic C (r = 0.71, p = 0.01). The amount of P required for maintaining a soil solution concentration of 0.2 mg P l-1 ranged from 2.1 to 123.5 mg P kg-1 soil. Soils collected from Qweqwe (a Cambisol), Qunu (an Acrisol), Ncihane (a Luvisol) and Bethania (a Ferralsol) had lower external P requirement values and were classified as lower sorbers, whereas soils from Ntlonyana (a Planosol), Chevy Chase (a Ferralsol) and Flagstaff (a Ferralsol) were classified as moderate sorbers. The results suggested that P availability could be compromised in 43 percent iii of the soils studied and that measures to mitigate the adverse effects of P sorption were needed to ensure that P is not a limiting factor to crop production, where such soils are found. Goat manure addition at varying rates (5, 10 and 20 tha-1 dry weight basis) to two of the moderately P fixing soils from Chevy Chase and Flagstaff, reduced P sorption maxima (Smax) compared to the control treatment. Phosphate sorption decreased with increasing amounts of goat manure in both soils but the extent of reduction was greater on Chevy Chase soil than on Flagstaff soil. The relative liming effects of the different rates of goat manure followed the order 20 t GM ha-1 > 10 t GM ha-1 > 5 t GM ha-1. In a separate experiment, addition of inorganic P at varying rates (0, 90, 180, and 360 kg P ha-1) to Flagstaff soil increased labile P fractions (resin P, biomass P and NaHCO3-Pi) and the increases were greater when goat manure was co-applied. The control treatments contained only 17.2 and 27.5 mg P kg-1 of resin extractable P in the un-amended and manure amended treatments, respectively which increased to 118.2 and 122.7 mg P kg-1 on day 28 of incubation. Biomass P concentration was increased from 16.8 to 43.9 mg P kg-1 in P alone treatments but the fraction was greatly enhanced with manure addition, increasing it from 32.6 to 97.7 mg P kg-1. NaOH-Pi was the largest extractable Pi fraction and ranged from 144.3 to 250.6 mg P kg-1 and 107.5 to 213.2 mg P kg-1 in the unamended and manure amended treatments, respectively. Dry matter yield and P uptake by maize grown in the glasshouse were highly and significantly (p = 0.05) correlated with the different P fractions in the soil. The correlations followed the order resin P (r = 0.85) > NaOH-Pi (r = 0.85) > NaHCO3-Pi (r = 0.84) >> biomass P (r = 0.56) for dry matter yield at 6 weeks after planting. At 12 weeks after planting, goat manure had iv highly significant effects on resin P and biomass P but had no effect on NaHCO3-Pi and NaOH–Pi. The combination of biomass P, resin P and NaHCO3-Pi explained 75.8 percent of the variation in dry matter yield of which 63.0 percent of the variation was explained by biomass P alone. The greatest increase in biomass P occurred when added P was co-applied with 5 or 10 tha-1 goat manure. The predictive equation for maize dry matter yield (DM) was: DM (g) = 1.897 biomass P + 0.645 resin P (r = 0.73). Resin P was the fraction that was most depleted due to plant uptake and decreased by 56 to 68 percent between the 6th week and the 12th week of sampling indicating that it played a greater role in supplying plant available P. The results therefore suggested that the use of goat manure may allow resource poor farmers to use lower levels of commercial phosphate fertilizers because of its effect to reduce soil P sorption. In addition, higher increases in biomass P due to manure addition observed at lower rates of added P indicated that goat manure has potential for enhancing bioavailability and fertilizer use efficiency of small inorganic P applications.
- Full Text:
- Date Issued: 2007
- Authors: Gichangi, Elias Maina
- Date: 2007
- Subjects: Phosphorus in agriculture , Soils -- Phosphorus content , Phosphatic fertilizers , Soils -- Phosphorus content -- South Africa -- Transkei
- Language: English
- Type: Thesis , Doctoral , PhD (Soil Science)
- Identifier: vital:11960 , http://hdl.handle.net/10353/80 , Phosphorus in agriculture , Soils -- Phosphorus content , Phosphatic fertilizers , Soils -- Phosphorus content -- South Africa -- Transkei
- Description: Low availability of soil phosphorus (P) caused by strong sorption of P is a major constraint to agricultural production in most South African soils, particularly those from the high rainfall areas. The aim of this study was therefore to investigate whether combined addition of goat manure with inorganic P fertilizers could enhance P availability in some P fixing soils of the Transkei region, South Africa. The study addressed the following specific objectives (i) to assess P sorption capacities and requirements of selected soils and their relationship with selected soil properties and single point sorption test, (ii) to assess the effects of goat manure and lime addition on P sorption properties of selected P fixing soils (iii) to assess the temporal changes in concentration of inorganic and microbial biomass P fractions following application of inorganic fertilizer P with goat manure in a laboratory incubation experiment, and, (iv) to assess the effects of goat manure application with inorganic phosphate on inorganic and microbial biomass P fractions, P uptake and dry matter yield of maize. Sorption maxima (Smax) of seven soils examined ranged from 192.3 to 909.1 (mg P kg-1) and were highly and positively correlated with sorption affinity constant (r = 0.93, p = 0.01) and organic C (r = 0.71, p = 0.01). The amount of P required for maintaining a soil solution concentration of 0.2 mg P l-1 ranged from 2.1 to 123.5 mg P kg-1 soil. Soils collected from Qweqwe (a Cambisol), Qunu (an Acrisol), Ncihane (a Luvisol) and Bethania (a Ferralsol) had lower external P requirement values and were classified as lower sorbers, whereas soils from Ntlonyana (a Planosol), Chevy Chase (a Ferralsol) and Flagstaff (a Ferralsol) were classified as moderate sorbers. The results suggested that P availability could be compromised in 43 percent iii of the soils studied and that measures to mitigate the adverse effects of P sorption were needed to ensure that P is not a limiting factor to crop production, where such soils are found. Goat manure addition at varying rates (5, 10 and 20 tha-1 dry weight basis) to two of the moderately P fixing soils from Chevy Chase and Flagstaff, reduced P sorption maxima (Smax) compared to the control treatment. Phosphate sorption decreased with increasing amounts of goat manure in both soils but the extent of reduction was greater on Chevy Chase soil than on Flagstaff soil. The relative liming effects of the different rates of goat manure followed the order 20 t GM ha-1 > 10 t GM ha-1 > 5 t GM ha-1. In a separate experiment, addition of inorganic P at varying rates (0, 90, 180, and 360 kg P ha-1) to Flagstaff soil increased labile P fractions (resin P, biomass P and NaHCO3-Pi) and the increases were greater when goat manure was co-applied. The control treatments contained only 17.2 and 27.5 mg P kg-1 of resin extractable P in the un-amended and manure amended treatments, respectively which increased to 118.2 and 122.7 mg P kg-1 on day 28 of incubation. Biomass P concentration was increased from 16.8 to 43.9 mg P kg-1 in P alone treatments but the fraction was greatly enhanced with manure addition, increasing it from 32.6 to 97.7 mg P kg-1. NaOH-Pi was the largest extractable Pi fraction and ranged from 144.3 to 250.6 mg P kg-1 and 107.5 to 213.2 mg P kg-1 in the unamended and manure amended treatments, respectively. Dry matter yield and P uptake by maize grown in the glasshouse were highly and significantly (p = 0.05) correlated with the different P fractions in the soil. The correlations followed the order resin P (r = 0.85) > NaOH-Pi (r = 0.85) > NaHCO3-Pi (r = 0.84) >> biomass P (r = 0.56) for dry matter yield at 6 weeks after planting. At 12 weeks after planting, goat manure had iv highly significant effects on resin P and biomass P but had no effect on NaHCO3-Pi and NaOH–Pi. The combination of biomass P, resin P and NaHCO3-Pi explained 75.8 percent of the variation in dry matter yield of which 63.0 percent of the variation was explained by biomass P alone. The greatest increase in biomass P occurred when added P was co-applied with 5 or 10 tha-1 goat manure. The predictive equation for maize dry matter yield (DM) was: DM (g) = 1.897 biomass P + 0.645 resin P (r = 0.73). Resin P was the fraction that was most depleted due to plant uptake and decreased by 56 to 68 percent between the 6th week and the 12th week of sampling indicating that it played a greater role in supplying plant available P. The results therefore suggested that the use of goat manure may allow resource poor farmers to use lower levels of commercial phosphate fertilizers because of its effect to reduce soil P sorption. In addition, higher increases in biomass P due to manure addition observed at lower rates of added P indicated that goat manure has potential for enhancing bioavailability and fertilizer use efficiency of small inorganic P applications.
- Full Text:
- Date Issued: 2007
Growth performance, carcass characteristics and meat quality of Nguni, Bonsmara and Angus steers raised on natural pasture
- Authors: Muchenje, Voster
- Date: 2007
- Subjects: Cattle -- Feeding and feeds , Cattle -- Growth , Nguni cattle , Aberdeen -- Angus cattle , Bonsmara cattle , Meat industry and trade -- Quality control
- Language: English
- Type: Thesis , Doctoral , PhD (Animal Science)
- Identifier: vital:11580 , http://hdl.handle.net/10353/199 , Cattle -- Feeding and feeds , Cattle -- Growth , Nguni cattle , Aberdeen -- Angus cattle , Bonsmara cattle , Meat industry and trade -- Quality control
- Description: The objective of the current study was to compare tick loads, growth, carcass characteristics and meat quality of Nguni, Bonsmara and Angus steers raised on natural pasture. A total of 30, 7-month old steers each of Bonsmara and Angus, and 40 Nguni steers were kept at the University of Fort Hare Farm till slaughter at 18 months. Monthly weights of the steers were recorded. Carcasses were electrically stimulated. The m. longissimus thoracis et lumborum was sampled for the measurement of meat colour, pH, drip loss, sarcomere length (SL), water holding capacity (WHC), cooking losses, myofibrillar fragmentation length (MFL), Warner Bratzler shear force (WBSF), fatty acid profiles and sensory characteristics of the steers. Urine samples were collected at the slaughter line for the determination of stress hormone concentrations. The Nguni had the lowest tick load (P < 0.05) while the Angus had the highest tick load (P < 0.05). Tick load did not affect the growth rate and carcass characteristics of the steers. Bonsmara and Angus steers had higher (P < 0.05) carcass weight and dressing percentage than the Nguni steers. Meat quality characteristics were similar (P > 0.05) among all the breeds, except that Nguni meat was darker (L*) (P < 0.05) than meat from the other two breeds. The Bonsmara had the highest (P > 0.05) concentrations while the Nguni had the lowest (P > 0.05) concentrations of stress hormones. There were significant (P < 0.05) correlations between WB values of meat aged for two and 21 days in Nguni and Bonsmara, but not in Angus. The correlations among stress responsiveness hormones and meat quality were breed-dependent. Except monounsaturated fatty acids (MUFA) and the n-6/n-3 ratio, fatty acid profiles among the breeds were similar (P > 0.05). Cholesterol levels among the breeds were similar (P > 0.05). The Nguni had the best (P < 0.05) sensory characteristics, such as flavour and tenderness. It can be concluded that while the Nguni is a small framed breed, its meat quality is similar to that of Bonsmara and Angus and has the best meat taste when raised on natural pasture.
- Full Text:
- Date Issued: 2007
- Authors: Muchenje, Voster
- Date: 2007
- Subjects: Cattle -- Feeding and feeds , Cattle -- Growth , Nguni cattle , Aberdeen -- Angus cattle , Bonsmara cattle , Meat industry and trade -- Quality control
- Language: English
- Type: Thesis , Doctoral , PhD (Animal Science)
- Identifier: vital:11580 , http://hdl.handle.net/10353/199 , Cattle -- Feeding and feeds , Cattle -- Growth , Nguni cattle , Aberdeen -- Angus cattle , Bonsmara cattle , Meat industry and trade -- Quality control
- Description: The objective of the current study was to compare tick loads, growth, carcass characteristics and meat quality of Nguni, Bonsmara and Angus steers raised on natural pasture. A total of 30, 7-month old steers each of Bonsmara and Angus, and 40 Nguni steers were kept at the University of Fort Hare Farm till slaughter at 18 months. Monthly weights of the steers were recorded. Carcasses were electrically stimulated. The m. longissimus thoracis et lumborum was sampled for the measurement of meat colour, pH, drip loss, sarcomere length (SL), water holding capacity (WHC), cooking losses, myofibrillar fragmentation length (MFL), Warner Bratzler shear force (WBSF), fatty acid profiles and sensory characteristics of the steers. Urine samples were collected at the slaughter line for the determination of stress hormone concentrations. The Nguni had the lowest tick load (P < 0.05) while the Angus had the highest tick load (P < 0.05). Tick load did not affect the growth rate and carcass characteristics of the steers. Bonsmara and Angus steers had higher (P < 0.05) carcass weight and dressing percentage than the Nguni steers. Meat quality characteristics were similar (P > 0.05) among all the breeds, except that Nguni meat was darker (L*) (P < 0.05) than meat from the other two breeds. The Bonsmara had the highest (P > 0.05) concentrations while the Nguni had the lowest (P > 0.05) concentrations of stress hormones. There were significant (P < 0.05) correlations between WB values of meat aged for two and 21 days in Nguni and Bonsmara, but not in Angus. The correlations among stress responsiveness hormones and meat quality were breed-dependent. Except monounsaturated fatty acids (MUFA) and the n-6/n-3 ratio, fatty acid profiles among the breeds were similar (P > 0.05). Cholesterol levels among the breeds were similar (P > 0.05). The Nguni had the best (P < 0.05) sensory characteristics, such as flavour and tenderness. It can be concluded that while the Nguni is a small framed breed, its meat quality is similar to that of Bonsmara and Angus and has the best meat taste when raised on natural pasture.
- Full Text:
- Date Issued: 2007