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A technical and economic evaluation of a passive underground mine-water purification system (PUMPS): a geothermally powered geo-engineering system designed for in-situ bio-remediation of acid mine water

  • Authors: Ntholi, Thakane Thato Prudence
  • Date: 2017
  • Subjects: Water -- Purification -- South Africa Water -- Purification -- Biological treatment , Mine water -- South Africa -- Evaluation Acid mine drainage -- South Africa Environmental geochemistry -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , DPhil
  • Identifier: http://hdl.handle.net/10948/19586 , vital:28900
  • Description: PUMPS mimics natural geothermal vents as a conceptual model designed for the remediation of acid mine water (AMW) in voids of abandoned gold mines of the Witwatersrand Basin in South Africa. In this system, a reaction chamber containing Desulfotomaculum kuznetsovii sulfate reducing bacteria will be set at the bottom of a 3-4 km deep mine that will be flooded. A geothermal system with at least one (1) doublet will be drilled from the bottom of the mine to the depth of 8km, where the temperatures are sufficient for geothermal energy harvesting. AMW, used as a geothermal fluid, will be pumped down the injection well and circulate through hot rock. The hot water is then used to generate electricity and then channelled into the reaction chamber to undergo bio-remediation. Following treatment, the water flows back into the mine voids where it will improve the quality of untreated AMW through dilution. Eventually, the mine will be flooded with clean water that can be stored underground and/or pumped up to surface for social and ecosystem services. Following an introduction and proof of concept for the PUMPS, the research builds further on the technical and economic evaluation of the PUMPS in order to assert its viability and sustainability. The technical viability includes testing the ability for Desulfotomaculum kuznetsovii to survive in high pressure condition; quantifying the amount of energy that can be drawn from the geothermal reservoir; determining the placement and scheme of the geothermal wells; and, finally, developing a robust economic model of the system. Experiments show that Desulfotomaculum Kuznetsovii can tolerate high pressure conditions in of at least 100bar at their ideal sulfate reducing temperature of 63°C. Geochemical modelling shows that AMW can be used effectively as a geothermal fluid for PUMPS. To achieve highest efficiency and minimal fluid loss, the geothermal wells should be placed along the SSE-NNW direction, based on the known stress field across the Witwatersrand Basin. With a flow rate of 30l/s the energy drawn from the geothermal reservoir is sufficient to drive PUMPS and the surplus energy is determined by the volume of AMW treated per day. All results indicate that the PUMPS is technically and economically viable. The economic model shows that the value and viability of the PUMPS is best reflected with a comprehensive inclusion of potential revenue (for example from chemical solution mining of deep seated gold) and financial/environmental incentives.
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  • Date Issued: 2017

A theoretical model for successful management of revenue for beneficiary communities of renewable energy companies in South Africa

  • Authors: Amansure, Ricardo Julian
  • Date: 2017
  • Subjects: Strategic planning -- South Africa , Social responsibility of business -- South Africa , Renewable energy sources -- South Africa
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10948/7408 , vital:21351
  • Description: The Renewable Energy (RE) sector is one of the fastest growing new industries in the Republic of South Africa (RSA). The Bloomberg New Energy Finance Climate Scope Report recently ranked RSA third globally, behind China and Brazil, and first among African countries for investment in clean energy (Glickman, 2014). However, one of the main benefits to be derived from the industry, that of socio-economic and enterprise development, is not being achieved owing to unsuccessful management of revenue for beneficiary communities in the renewable energy sector in RSA. Challenges relating to good governance and long-term planning are causing significant harm to communities that are already vulnerable, and are threatening to have a negative effect on the industry’s ability to fulfil its obligation to alleviate and, ultimately, eradicate poverty in some of the poorest communities in RSA.The primary objective of this study is to develop a model for the successful management of revenue for beneficiary communities in the renewable energy sector in South Africa. The model will provide guidance for enterprises, stakeholders, industry experts and community development practitioners within the renewable energy sector towards a pro-active, effective, and relevant decision-making process to achieve success in managing revenue for beneficiary communities. To address the primary objective, a number of secondary objectives were established by developing a conceptual model comprising variables identified in a comprehensive survey of the related literature. A path diagram, based on the formulation of appropriate hypotheses, was constructed between the independent variable and subsequent intervening and dependent variables. Primary data sourced from the identified national and international population of project management practitioners were collected by means of an electronic measuring instrument. The data were analysed and tested empirically by means of Structural Equation Modelling (SEM). The determinants that were identified through a review of the literature as influencing the success of managing revenue for beneficiary communities of renewable energy companies in South Africa included: the use of outside advice, strategic financial services, strategic planning, strategic partnerships, infrastructure development and project management. In order to achieve the objective, the following research questions were formulated: What is the influence of external factors such as outside advisers and support services on the perceived success of managing revenue for beneficiary communities of renewable energy companies in South Africa? The purpose of this research, therefore, was to evaluate and recommend new methodologies to the renewable energy sector by introducing a model of perceived success in managing revenue for beneficiary communities of renewable energy companies in South Africa. The study provided new insight into managing revenue for beneficiary communities in RSA. With the renewable energy sector being one of the fastest growing sectors in the RSA, and the RSA Government being determined to link the location of renewable energy facilities to economic development, this research has given new insight into managing revenue for SED and ED. The objectives of multi-sector participation, transformational change and sustainable initiatives for beneficiary communities could ensure greater consideration and care when managing beneficiary revenue. Thereby, the opportunity presented by the RE industry for beneficiary communities can change these communities dramatically for the better. The study makes a valuable contribution to the body of knowledge about managing revenue for beneficiary communities. The proposed model has led to a better understanding of the determinants that influence the success of managing revenue for beneficiary communities, namely: distinctive benefits (a combination of two variables: outside advice and support services), financial management, developmental benefits (a combination of two variables: infrastructure development and education), human development, project management and strategic planning. The study has also opened up new avenues of research into this subject.
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  • Date Issued: 2017

A unified data repository for rich communication services

  • Authors: Sogunle, Oluwasegun Francis
  • Date: 2017
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/5777 , vital:20974
  • Description: Rich Communication Services (RCS) is a framework that defines a set of IP-based services for the delivery of multimedia communications to mobile network subscribers. The framework unifies a set of pre-existing communication services under a single name, and permits network operators to re-use investments in existing network infrastructure, especially the IP Multimedia Subsystem (IMS), which is a core part of a mobile network and also acts as a docking station for RCS services. RCS generates and utilises disparate subscriber data sets during execution, however, it lacks a harmonised repository for the management of such data sets, thus making it difficult to obtain a unified view of heterogeneous subscriber data. This thesis proposes the creation of a unified data repository for RCS which is based on the User Data Convergence (UDC) standard. The standard was proposed by the 3rd Generation Partnership Project (3GPP), a major telecommunications standardisation group. UDC provides an approach for consolidating subscriber data into a single logical repository without adversely affecting existing network infrastructure, such as the IMS. Thus, this thesis details the design and development of a prototypical implementation of a unified repository, named Converged Subscriber Data Repository (CSDR). It adopts a polyglot persistence model for the underlying data store and exposes heterogeneous data through the Open Data Protocol (OData), which is a candidate implementation of the Ud interface defined in the UDC architecture. With the introduction of polyglot persistence, multiple data stores can be used within the CSDR and disparate network data sources can access heterogeneous data sets using OData as a standard communications protocol. As the CSDR persistence model becomes more complex due to the inclusion of more storage technologies, polyglot persistence ensures a consistent conceptual view of these data sets through OData. Importantly, the CSDR prototype was integrated into a popular open-source implementation of the core part of an IMS network known as the Open IMS Core. The successful integration of the prototype demonstrates its ability to manage and expose a consolidated view of heterogeneous subscriber data, which are generated and used by different RCS services deployed within IMS.
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  • Date Issued: 2017

A water footprint assessment of dryland pasture based dairy enterprise in the Eastern Cape: a case study

  • Authors: Jenje, Paige
  • Date: 2017
  • Subjects: Water supply, Agricultural -- South Africa , Water supply, Agricultural -- Government policy -- South Africa , Water consumption -- Measurement -- South Africa , Water demand management -- South Africa , Water-supply -- Accounting -- South Africa , Cattle -- Water requirements -- South Africa -- Cast studies
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: http://hdl.handle.net/10962/5362 , vital:20917
  • Description: Water scarcity continues to pose a threat to South Africa, with severe water scarcity predicted within the next fifty years. As a result, national interest has been sparked over the development of market based water resource allocation strategies to alleviate pressures on South Africa's freshwater resources, and ensure compliance with the National Water Act. Agriculture is the largest water user internationally and within South Africa, highlighting the importance of improving the water use efficiency within the industry. This study performed a full water footprint assessment (WFA) of a dryland pasture based dairy enterprise in the Eastern Cape. Following the guidelines of the WFA, this study calculated the blue, green and grey water footprints of dryland pasture based dairy production from crop- to-farm gate by assessing the water footprints of pasture production, bought in feed and concentrates, drinking water and servicing water processes over a period of five years. Following the accounting the of the water footprint, economic and environmental sustainability indicators were used along with the incorporation of the Water Risk Filter tool. This revealed that the case study farm was operating efficiently with the enterprise's highest water related risk being governmental regulation. Water footprint accounting results highlighted that green water was largest contributor to the overall water footprint of over 80%, and grey water contributed the least to the water footprint of dryland pasture based dairy production. Economic productivity results indicated that milk production is highly correlated with annual rainfall due to the breeding strategy undertaken by the farm. Results also indicated little correlation between the monthly water footprint and milk production, with the majority of the enterprise's milk production occurring in the last quarter regardless of the water footprint. The study demonstrated the relationship between the water footprint and economic land and water productivity, along with the value of milk to costs ratio which indicated that approximately R1.00 worth of costs generates between R1.80 and R2.06 value of milk. The sustainability indicators suggested that the farm's management of its effluent dam requires attention to meet the Department of Water and Sanitations effluent waste quality guidelines. The overall analysis of the water footprint suggested that the highest water related risk to dryland dairy production was regulatory risk. This risk suggests that the government cannot be relied upon for the management of freshwater resources within the study area, leaving the onus on the individual dairy farmers. As such, farmers should utilise the water footprint to formulate water stewardship programmes which have the potential to influence the regulation and protection of freshwater resources.
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  • Date Issued: 2017

Abalone stock enhancement at Cape Recife, Eastern Cape Province of South Africa

  • Authors: Witte, Warren
  • Date: 2017
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/45695 , vital:25532
  • Description: The potential for restocking depleted natural reefs with hatchery abalone, Haliotis midae, to support a commercial ranching venture in the Eastern Cape Province of South Africa was investigated. A baseline stock assessment and analysis of historical fishery data provided compelling evidence of significant declines in the abalone stock, attributed to uncontrolled illegal fishing over the last 20 years at the study site. A ranching pilot study was undertaken where small-scale replicated seeding experiments were set up which quantified the effect of seed size, density and habitat on survival and growth of hatchery-reared abalone. Thirty-six experimental plots were seeded with 8400 abalone spread evenly over two broad habitats. Mean retrievals of seeded abalone were 17% ranging from 4 - 42% after a minimum of eight months at large. Release density and large-scale habitat had no significant effect on seed survival, but smaller seed size (40.0 ±3.7mm shell length) achieved higher (F1, 22 = 4.64, p = 0.042) retrievals than larger seed size (53 ±3.7mm). Growth rates were an average of 30% higher in the shallow sites compared deeper sites (t1, 1091 = -2.79, p = 0.005). There was seasonal component in growth with a 0.55 ± 0.04 mm per month higher rate in summer than during winter (t1, 1091 = -12.45, p < 0.001). Abalone seed releases were also conducted on a larger scale, which focused on the economic potential for commercial-scale ranching. Over 160 sites were seeded with 1.4 million hatchery reared abalone or 30 metric tonnes. Seventeen sites underwent long-term monitoring of survival with repeated sampling events on sites over a period of up to 666 days. Nine of these sites were seeded with 140800 small abalone (29 – 40 mm), three sites with 25100 medium abalone (30 – 46 mm) and five sites with 14700 large abalone (60 – 84 mm). There was a significant difference in survival between the seed sizes (F4,6329 = 304.3, P < 0.001). The Generalized Linear Mixed Model (GLMM) calculation estimated the instantaneous apparent mortality rate for small, medium and large abalone at 1.19 yr-1 , -0.9 yr-1 and -0.67 yr-1 , which equated to a survival rate of 21%, 28% and 36% per year respectively. The weighted mortality rate calculated according to the seed size differential mortality and the number of seed released for those sizes was 1 yr-1 or 25% survival. In conjunction with a conservative somatic growth rate of 1.2mm.m-1 and plausible emigration rates, a range of biomass harvesting estimates were obtained. Movement and mortality were investigated using video analysis which showed that hatchery seed had the ability to move considerably once released onto natural reefs and confirmed that mortality immediately following releases was due to the heavy predation pressure as confirmed by shell collections. This project has demonstrated that potential exists for ranching in South Africa and highlights critical factors that need to be addressed if ranching is to be an economically viable operation.
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  • Date Issued: 2017

Access to information by high school learners in selected schools in the Fort Beaufort Education District, Eastern Cape Province

  • Authors: Oyediran- Tidings,Stella Olubukunmi , Nekhwevha, F H
  • Date: 2017
  • Subjects: Information resources -- South Africa -- Eastern Cape Information services -- South Africa -- Eastern Cape nformation technology -- South Africa -- Eastern Cape -- Information services Information literacy -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10353/2094 , vital:27608
  • Description: The level of access to educational information is pertinent to the attainment of quality education by learners. Librarians play a key role in facilitating access to such information. Access to educational information equips the possessor with the power of knowledge to assert their rights under any right regime, and a right to education cannot be fully exercised without corresponding access to educational information. Set in the Fort Beaufort Education District of the Eastern Cape Province of South Africa, this study evaluates the level of access to educational information as an enabler of quality education. Research revealed that despite the acclaimed educational improvement in South Africa, the quality of education in many black constituencies and provinces remains low. Therefore, the objectives of this study include inter alia an investigation of the educational information needs of high school learners in the Fort Beaufort Education District, the educational information available and accessible to them, how the learners access information, the services and technologies accessible to the learners, challenges confronting their access and means of improving learners’ access to educational information in the district and by extension in South Africa.
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  • Date Issued: 2017

Access to information by high school learners in selected schools in the Fort Beaufort Education District, Eastern Cape Province

  • Authors: Oyediran- Tidings,Stella Olubukunmi
  • Date: 2017
  • Subjects: Information resources Information technology -- South Africa -- Eastern Cape -- Information services Information literacy -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Doctoral , Degree
  • Identifier: http://hdl.handle.net/10353/5304 , vital:29186
  • Description: The level of access to educational information is pertinent to the attainment of quality education by learners. Librarians play a key role in facilitating access to such information. Access to educational information equips the possessor with the power of knowledge to assert their rights under any right regime, and a right to education cannot be fully exercised without corresponding access to educational information. Set in the Fort Beaufort Education District of the Eastern Cape Province of South Africa, this study evaluates the level of access to educational information as an enabler of quality education. Research revealed that despite the acclaimed educational improvement in South Africa, the quality of education in many black constituencies and provinces remains low. Therefore, the objectives of this study include inter alia an investigation of the educational information needs of high school learners in the Fort Beaufort Education District, the educational information available and accessible to them, how the learners access information, the services and technologies accessible to the learners, challenges confronting their access and means of improving learners’ access to educational information in the district and by extension in South Africa.
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  • Date Issued: 2017

Accountability of councillors through the batho pele principles in Lukhanji Local Municipality

  • Authors: Tshambu, Avela
  • Date: 2017
  • Subjects: Municipal officials and employees -- South Africa -- Eastern Cape Local officials and employees -- South Africa -- Eastern Cape , Local government -- South Africa -- Eastern Cape Leadership
  • Language: English
  • Type: Thesis , Masters , MPA
  • Identifier: http://hdl.handle.net/10948/21384 , vital:29510
  • Description: The main objective of the study is to explore the accountability of the ward councillors through the application of the Batho Pele principles in Lukhanji Municipality. Accountability is regarded as the key aspect for any government in which it should be monitored and maintained. The main problem to be addressed by this study is the ways in which the ward councillors can improve accountability applying the Batho Pele principles. To address the research problem and to achieve the aims of this study, an empirical research was done by distributing self-administered questionnaires to the participants in Lukhanji Municipality. The research findings revealed that in Lukhanji Municipality poor accountability of the ward councillors in which it needs improvement. Another finding is that poor accountability is caused by the lack of understanding of the Batho Pele principles, lack of understanding of the accountability mechanisms and poor relations between the community and ward councillors. The research findings of the study pointed to the necessity to make a set of recommendations on improving accountability through the application of Batho Pele principles in Lukhanji Municipality.
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  • Date Issued: 2017

Action Plan to 2014 (Reviewed to 2019): evaluating the implementation of Goal 11. The case of Cofimvaba education district, 2010 - 2012

  • Authors: Makasi, Nomonde Sakhiwe
  • Date: 2017
  • Subjects: Education -- South Africa -- Eastern Cape -- Philosophy Education, Primary -- South Africa -- Eastern Cape Preschool children -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MPA
  • Identifier: http://hdl.handle.net/10353/12993 , vital:39414
  • Description: This study involved evaluating the extent to which universal access to quality grade R was realised by 2012 in Cofimvaba education district in the Eastern Cape Province. The evaluation was done through the implementation of goal 11 of the Education Sector Strategy - the Action Plan to 2014, revised to 2019. It further sought to find out whether universal access to grade R occurred to all learners who registered for grade 1 and whether the quality of grade R had improved between 2010 and 2012 in Cofimvaba education district. Improving the quality of grade R in this study included an assessment of the level of qualification of grade R practitioners and an improvement of the quality of grade R tuition through the use of textbooks, workbooks and resource packs supplied to grade R by the Department of Basic Education (DBE). The study used both the qualitative and quantitative methods. Questionnaires were used as data collection methods from grade R practitioners and grade 1 teachers. The respondents in this study consisted of twelve grade R practitioners, ten grade 1 teachers and two officials from Cofimvaba district office. The findings of this study revealed that the universal access to grade R, calculated from grade 1 learners who received formal grade R, was not achieved over the three-year period 2010-2012; albeit the target of grade 1 learners who should have received formal grade R by 2012 was a mere 50 percent. The percentage of grade R learners who received access to the required textbooks fell below the expected target of 100 percent. Although 77.61 percent does not signify bad performance, the non-attainment of 100 percent access to the required textbooks could not be acceptable because the absence of textbooks meant that effective teaching and learning could not have taken place. However, these findings uncovered that the supplied textbooks and workbooks were high quality learning and teaching materials. The findings also uncovered that the ECD-grade R practitioners, at the time, had the necessary work experience and limited qualifications as a means to teach the grade R classes. A pressing matter for the Department was the improvement of conditions of service for practitioners; their professionalisation as well as further improvement of their qualifications. It was revealed, through this study, that there was a slight improvement in the universal access to grade R; however, the quality of grade R still needed attention especially in so far as the provision of suitably qualified practitioners is concerned.
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  • Date Issued: 2017

Activities, functions and structure of public sector pharmaceutical and therapeutics committees in the Eastern Cape Province, South Africa

  • Authors: Henge-Daweti, Vatiswa
  • Date: 2017
  • Subjects: Medical ethics committees -- South Africa -- Eastern Cape Pharmaceutical policy -- South Africa -- Eastern Cape , Pharmaceutical services -- South Africa -- Eastern Cape Pharmaceutical ethics -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10948/15945 , vital:28293
  • Description: The Council of Australian Therapeutic Advisory Groups (CATAG) (2013) define a Pharmaceutical and Therapeutics Committee (PTC) as a ‘multi-disciplinary team committee with a commitment to the overall governance of the medicines management system in health service organizations to ensure the judicious, appropriate, safe, effective and cost-effective use of medicines’. The multi-disciplinary team includes the health care providers, who are actively participating in the health care systems, such as doctors, pharmacists, nurses, administrators, finance officers, quality improvement managers and other staff members who participate in the medicine use processes according to their knowledge and skills. The major role of this committee is to evaluate and promote rational drug use by health care providers and consumers. In addition, this committee is responsible for developing systems and strategies to prevent adverse medicine reactions and medication errors, enhance rational prescribing and dispensing, provide educational activities and ensure the use of quality and cost-effective medicines. This is a cross-sectional study that was aimed at exploring the structure, activities and functions of public sector institutional Pharmaceutical and Therapeutics Committees (PTC) in the Eastern Cape (EC) Province in South Africa (SA). The primary objectives of the study were to (i) investigate and describe the structure, functions and the activities of the institutional PTCs, and (ii) explore and describe the perception of PTC secretariats on the functionality of the institutional PTCs. A purpose-designed questionnaire including both quantitative and qualitative aspects adapted from other international studies was piloted prior to being used for data collection. The secretariats of the institutional PTCs were requested to complete the questionnaire. Data were analysed using descriptive statistics for the quantitative aspects and thematic analysis for the qualitative component of the questionnaire. Data collection commenced after approval by the relevant ethics committees had been granted. The findings of the study reflected that the majority of the PTCs in the EC province, SA are district/sub-district PTCs which are a cluster of a number of health care institutions in close proximity. The PTC members were appointed by the executive authority as recommended by the literature and other guiding documents. As expected the nurses were dominant as the members of the PTCs in these district/sub-district PTCs. The secretariats were the pharmacists where pharmacists were available and chairperson were doctors. These findings correspond to the recommendations by the National Department of Health PTC policy (2015) and the studies conducted in other countries. A number of PTCs had sub-committees formed e.g. ABC analysis review committee, medicine utilization evaluation (MUE) committee and pharmacovigilance committee to optimise their functionality. Out of 15 PTCs only five PTCs with sub-committees reported functions and interventions, establishment of policies and SOPs. The rest had no outcomes or interventions reported. Poor production of policies and SOPs was observed which differs from other countries’ PTCs. The focus of sub-committees in other countries is the development of formulary and policies related to medicine use. These findings pose a question regarding the functionality and effectiveness of the existing institutional PTCs in the province. In addition, the basic documents that are required to run the PTC were unavailable in a number of PTCs. Barriers to the functionality of PTCs were reported i) Lack of pharmacists and training in PTCs. ii) The rural nature of the EC province and iii) Unavailability of resources including lack of re-imbursement of personal costs. These findings reveal that budget allocation for institutional PTCs is crucial for their functionality. It can be concluded that in the EC province the institutional PTCs which are active and effective are low in number and do not cover all geographical areas. Secondly there is a need for training and educating the PTC members on the role of the PTC members, role of sub-committees, development of policies, SOPs and the basic documents for the functionality of the committee. It is also important that during training the monitoring and evaluation of the effectiveness of the committee is emphasised. Therefore, the choice of the PTC objectives should be measurable as they can assist as indicators of effectiveness. Support by the executive authority has been observed.
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  • Date Issued: 2017

Adaptation of the mathematics recovery programme to facilitate progression in the early arithmetic strategies of Grade 2 learners in Zambia

  • Authors: Young, Catherine
  • Date: 2017
  • Subjects: Mathematics -- Study and teaching (Elementary) -- Zambia Arithmetic -- Study and teaching (Elementary) -- Zambia
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: http://hdl.handle.net/10962/4977 , vital:20749
  • Description: Research indicates that many children finish primary school in Southern Africa still reliant on inefficient counting strategies. This study extends the research of the South African Numeracy Chair project to early mathematics intervention with Grade 2 learners. It investigated the possible adaptation of the Mathematics Recovery programme to facilitate learner progression in early arithmetic strategies. This study aimed to investigate the possibility of adapting the Mathematics Recovery programme for use in a whole class setting, and to research the effectiveness of such an adapted programme. This study also aimed to investigate the extent of the phenomenon of unit counting and other early arithmetic strategies used in the early years in Zambia. This study was conducted from an emergent perspective. A review of the literature indicated that children who become stuck using unit counting face later mathematical difficulties, and that teacher over-emphasis on unit counting in the early years of schooling may be a contributing factor. This study used a qualitative design research methodology that consisted of a preparation phase, teaching experiment and retrospective analysis. The context of this teaching experiment was a seven week after-school intervention with a class of Grade 2 learners aged seven to eight in a rural Zambian primary school. Data collection and analysis focused on video recordings of a sample of 6 learners. The experimental teaching content focused on the Early Arithmetic Strategies aspect of the Mathematics Recovery programme. Although limited by time and research focus, this study found that all learners made some progress in early arithmetic strategies, and indicates that the Mathematics Recovery programme has potential for adaptation for early intervention in whole class teaching to address the mathematical education challenges in Zambia and beyond. This study also found that unit counting predominated in the sample learners, but that strategies were not yet entrenched, indicating this was a suitable age for early intervention. This study makes methodological contributions to a growing body of research into the adaptation of the Mathematics Recovery in Southern African contexts and suggests avenues for possible further research.
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  • Date Issued: 2017

Adjusting lion diet estimates to assess lion impacts on small prey in Addo Elephant National Park

  • Authors: Gerber, Amarein Judith
  • Date: 2017
  • Subjects: Wildlife conservation -- South Africa -- Addo Elephant National Park , Lion -- Behavior -- South Africa -- Addo Elephant National Park Lion -- Conservation -- South Africa -- Addo Elephant National Park
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/14311 , vital:27542
  • Description: Populations of small prey species (< 92 kg) can be regulated by competition, habitat-mediated responses, climate change, disease and predation. Populations of small prey species have declined in the Addo Elephant National Park Main Camp Section since the reintroduction of apex predators (lion and spotted hyaena). One possible explanation is predation by lion and spotted hyaena. However, small prey species are not generally considered preferred prey items of these predators, hence their contribution to predator diets needs to be explored. Global Positioning System (GPS) cluster analysis has emerged as a viable approach to locate lion kills for lion diet estimation in AENP, however this technique is known to bias diet estimates to large prey species. Understanding the impact of lion predation on populations of small prey in Main Camp therefore requires better estimates of lion diets. This study investigated the potential underestimation of small prey species in lion diet estimates by combining the data from scat analysis and carcasses located at GPS clusters. The adjusted lion diets were then used to investigate if the impact of lion predation could explain declines in small prey, by relating lion prey preferences to prey population trends in Nyathi. Using the results from Nyathi, it could then be inferred whether lions could have been responsible for the declines observed in Main Camp. Six GPS-collared lions provided location data used to construct individual movement paths, along which spatio-temporal clusters of GPS locations (n = 4896) were identified for ground investigation. Carcasses (n = 643) were recorded at the GPS clusters and scats (n = 256) were collected at GPS clusters with or without carcasses. Data from the located carcasses and scat collections were then used to create a history of feeding events for each collared lion in Main Camp-Colchester and Nyathi from a) carcasses alone or b) a combination of scats and carcasses, based on an estimated short and long lion throughout period. Relative prey availability was estimated based on camera trapping in Nyathi in high lion, low lion and no lion use areas, as lions may encounter some prey species more than other prey species. Jacobs’ index prey preference was used to investigate the importance of prey species to lion diets at three landscape scales: 1) Nyathi, 2) lion UD and 3) core lion UD. Lastly, prey population trends were investigated in Nyathi to provide an indication of possible changes in prey populations. Large prey species dominated the adjusted diets of lions in Main Camp-Colchester and Nyathi. However, when comparing the GPS carcass-derived lion diet estimate to the combined lion diet estimate, small prey were underestimated more often than large prey in the GPS carcass-derived lion diet estimate. Missed feeding events were therefore a function of prey body size. In addition, missed feeding events were also representative of the lion diets based on carcasses, with the tendency for species more often consumed to be missed more often in the diet record. However, even though small prey species were underestimated, they represented the minority of species consumed by lions and were predominantly avoided by lions in Nyathi. Lion prey preferences thus did not correlate to the declines in small prey species in Naythi, suggesting other potential drivers are important for small population trends in Nyathi. Lion predation cannot be ruled out as a driver of the decline in small prey species in Main Camp, due to different ecological conditions (e.g. vegetation density) in Main Camp compared to Nyathi, during the observed small prey population declines. Lion prey preferences in Nyathi revealed fine-scale variations in species specific preferences by lions, as well as site-specific differences in prey preferences when compared to published lion prey preference meta-analyses. These findings suggest that metaanalysis studies should be used as a guideline from which hypotheses about local predatorprey interactions can be developed rather than as an absolute measure of prey preference.
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  • Date Issued: 2017

Adolescent mothers’ breastfeeding experiences in Nelson Mandela Bay health district

  • Authors: Fordjour Afriyie, Vera
  • Date: 2017
  • Subjects: Breastfeeding -- South Africa -- Eastern Cape , Children -- Nutrition -- South Africa -- Port Elizabeth , Teenage mothers -- South Africa -- Port Elizabeth
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/13879 , vital:27316
  • Description: Rationale: There is limited research available in South Africa that explores the breastfeeding experience among adolescent mothers; most of the studies were conducted in developed countries. One such study relating to the above mentioned developed countries stated that social and commitment factors influence the decision to breastfeed by adolescents. Furthermore, while adolescent mothers appreciate the benefits of breastfeeding, pain, public exposure and perceived complexities related to breastfeeding create barriers for them. The researcher was unable to ascertain if similar ambiguities exist among adolescent mothers in South Africa, and in the Eastern Cape (EC) in particular with its high rates of adolescent pregnancy. In order to attempt to develop age appropriate recommendations to assist adolescent mothers with their breastfeeding journey, the researcher undertook this research study to answer the following question: What are the breastfeeding experiences of adolescent mothers in the Nelson Mandela Bay Heath District (NMBHD)? Aim: The research aim was to determine the experiences of adolescent mothers regarding breastfeeding in NMBHD. Methods: The study implemented a qualitative research approach. To enhance the design, the researcher utilised an explorative, descriptive and contextual research design. The ethical principles that guided this study were autonomy, nonmaleficence, beneficence and justice. Fourteen adolescent mothers, attending PHC facilities in the NMBHD participated in the study. Participants were chosen from a purposive sampling technique and data were collected from semi-structured interviews, compromising of individual interviews. The researcher analysed the data using the using the eight steps of the Tesch analysis technique. Data was also analysed by an independent coder. Results obtained from the Tesch approach were compared to that of the independent coder results. Thereafter, the major themes and sub-themes that related to the study objectives were identified. Results: Three themes and 10 sub-themes were identified. Lack of knowledge and poor adherence to EBF, perceived breastmilk insufficiency, as well as incorrect infant feeding advice given by maternal mothers and grandmothers were associated with early introduction of complementary feeding. Most participants were motivated to breastfeed due to its economic and bonding benefits, as well as seeing their infant‟s progress in growth. Challenges of breastfeeding mentioned by the participants include: lack of support from the fathers of their infants and from health care providers, breast milk leakage, and the foul smell associated with the leaking of breast milk. The participants of the study also had suggestions to help improve the support given to adolescent mothers by health care providers in PHC facilities. Conclusions and recommendations: In conclusion, this study‟s findings revealed that adolescent mothers may need extra age appropriate education and support to assist them in breastfeeding successfully at PHC facilities, the community and schools. Maternal mothers and grandmothers were found to be the primary source of a support network for most adolescent mothers as opposed to health care providers who were categorised as being the secondary source of support. Thus, breastfeeding promotion tailored at maternal mothers and grandmothers would be beneficial in improving their knowledge about the recommended infant feeding practices and consequently aid in providing appropriate support and advice to adolescent mothers. Additionally, training and attitude modification of health care providers is needed to provide adolescent mothers with age-appropriate, effective and sensitive care and counselling.
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  • Date Issued: 2017

Adoption and up scaling of conservation agriculture in Malawi

  • Authors: Paul, John Mussa
  • Date: 2017
  • Subjects: Agricultural conservation -- Malawi , Conservation of natural resources -- Malawi Agriculture -- Malawi
  • Language: English
  • Type: Thesis , Doctoral , DPhil
  • Identifier: http://hdl.handle.net/10948/19717 , vital:28943
  • Description: Conservation agriculture (CA) has been widely recommended as one of the best ‘climate smart’ agriculture (CSA) practices in many regions of Africa and beyond. It helps to cushion smallholder farmers from the impacts of climate variability and change manifested through erratic rainfall, prolonged dry spells and droughts. CA is a preferred strategy for rehabilitating degraded agricultural land by improving its soil health for optimal crop production. However, adoption and upscaling of this farming practice in many African countries, which face critical challenges of food insecurity and soil degradation, including Malawi, is not significantly expanding despite these established benefits. This participatory action research study therefore explored factors limiting CA adoption and upscaling among the smallholder farmers in Khombedza Extension Planning Area where Total LandCare, the Malawian Ministry of Agriculture and other NGOs have been supporting farmers to adopt CA practices for more than five years. Participatory approaches were used throughout the research process for data collection, with farmers acting as co-researchers as they are best placed to identify the farming challenges and recommend solutions. Key informant interviews and field observations complemented and validated some of the results from the participatory rural appraisal (PRA) activities. The study findings revealed a number of factors behind low CA adoption and upscaling, with many relating to the poor extension system promoted by NGOs and government extension staff. Other factors relate to farmers’ perceptions and are linked to the CA system itself. The on-farm participatory training clarified the majority of farmers’ understanding and changed their mindset towards CA practices, which in turn increased its visibility in terms of adoption and scale of upscaling across the villages under study. In trying to address the poor extension system, as observed and reported by the majority of participants, the research practically tested a “Farmer Neighbourhood (FN) model”, which provided a greater opportunity for farm level interactive learning and provision of better farmer-to-farmer and farmer-to-field staff extension support. The majority of participants and field staff, as well as members of the National Conservation Agriculture Task Force (NCATF) in Malawi, made a recommendation to replicate this model of targeting and supporting farmers in order to increase CA visibility throughout the country. Participation and interactive farmer learning emerged as major themes, which guided successful implementation of the research whilst addressing the research questions and objectives.
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  • Date Issued: 2017

Affirmative action as a strategy for social justice in South Africa

  • Authors: Sinuka, Zamile Hector
  • Date: 2017
  • Subjects: Affirmative action programs -- Law and legislation -- South Africa , Social justice -- South Africa , Labor laws and legislation -- South Africa , South Africa -- Employment Equity Act -- 1998
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: http://hdl.handle.net/10948/20362 , vital:29268
  • Description: The purpose of this treatise is to develop a spirit of understanding affirmative action as a strategy that gives South Africa a human face of equality. The strategic development of affirmative action as part of Employment Equity Act is based on equality at workplace. This work takes note of the need to integrate human resource development for employment, productivity and education system that is based on formal education, prior knowledge education (RPL) and previous experience. The imbalances were designed to be of racial reflection therefore the redress process is racial in character but non-racial in content as the envisaged society is a non-racial society. The historical background of inequality and racial discrimination is noted in the environment of employment and on how other laws were enforcing the inequality. The arguments against affirmative action are debated and valid points of such arguments are noted as points of concern that must be considered in the process to attain equality. This work views affirmative action as a process that goes beyond employment relations and work as an instrument to change society by addressing social needs and services that have a reflection of inequality. Education is viewed as the out most important process to change the lives of people as affirmative action has a requirement of suitably qualified candidates to be affirmed. In South Africa problems of inequality were political designed but were enforced by various laws that were having material and psychological impact on the previously disadvantaged. The designated groups were divided into Africans, Indians and Coloureds, in Naidoo v Minister of Safety and Security this principle of defining designated racial groups was promoted in correction to the direction that was taken in Motala v University of Natal.Affirmative action is a legal process that addresses political designed problems. It is also a process that is exposed to abuse. Corrupt officials and managers appoint employees that do not qualify for posts on the bases of political affiliation or any other ground of discrimination. This is discussed with reference to the allegations of SADTU selling posts for principals, senior managers appointed in state co-operatives. The above mentioned tendencies are noted as part of negative indicators on the process that is meant to bring equality and non-racial society where all the citizens are given equal opportunities. This work views affirmative action as a strategy that is based on achieving a society that has a human face where race shall not be a point of reference.
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  • Date Issued: 2017

Agribusiness challenges to effectiveness of contract farming in commercialisation of small-scale vegetable farmers

  • Authors: Khapayi, Musa
  • Date: 2017
  • Subjects: Farms, Small -- South Africa -- Eastern Cape , Agriculture -- Economic aspects -- South Africa -- Eastern Cape , Agricultural industries -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Doctoral , DTech
  • Identifier: http://hdl.handle.net/10948/13981 , vital:27363
  • Description: The spread of contract farming in South Africa in recent years has provoked an ideological debate in literature. Linking small-scale vegetable farmers with lucrative agricultural markets through agribusiness value chains is seen as one of the foremost emerging agricultural practices to develop the subsistence farming sector into a mainstream economic sector – thereby revitalising the rural economy and alleviating poverty levels in the developing rural areas of South Africa. However, the challenges agribusiness and small-scale farmers experience in contract farming engagement and the prospects for enhancing the inclusion of small-scale farmers into modern value chains remain open to debate – two decades after transition to democracy. Yet the factors and mechanisms influencing the effective application of contract farming in the transition to commercial farming by small-scale farmers have not been thoroughly explored in South African research. Despite the efforts and the substantial investments made and the various policies and initiatives instigated to fast-track the linkages of small-scale farmers into high-value markets, the success stories of previously disadvantaged farmers operating in commercial agri-food chains are rare. Given the millions of small-scale farmers in former homelands alone, the negligible number of small-scale farmers successfully operating in commercial agri-food chains shows that the objectives to enable small-scale farmers to improve their livelihoods through participation in commercial agri-food chains have not yet been met. The broad objectives of the study were therefore to investigate the agribusiness challenges inherent in contract farming and the conditions and incentives required by agribusiness firms to engage small-scale vegetable farmers in contract farming programmes. Furthermore, the study examined the role played by the South African government to reduce the high transaction costs incurred by agribusinesses when engaging small-scale farmers in contractual arrangements. The Amathole and Sarah Baartman (formerly Cacadu) district municipalities in the Eastern Cape Province of South Africa were chosen as the composite survey area for this study. A predominantly qualitative research approach was applied to gather data on the phenomena under study. The following methodologies and research instruments and tools were selected. Firstly – as the secondary component of the research – a systematic review of literature to date was conducted to guide the empirical research and primary methodology. Secondly, the empirical component of the study comprised a questionnaire survey, unstructured interviews and focus group discussions. The questionnaire survey was used to collect data from the agribusiness firms in the area surveyed concerning the following aspects: the significant determinants of contract farming, the incentives required by the agribusiness firms to engage small-scale vegetable farmers in their contract farming programmes and the challenges faced by agribusiness firms in their interaction with small-scale farmers in contractual arrangements. Unstructured interviews were used to gather data from officials at each of the three levels of government – the Department of Rural Development and Land Reform nationally, Department of Agriculture and Land Reform provincially and (at local government level) two district municipalities – on the role played by government to reduce the high transaction costs incurred by agri-firms when procuring agricultural raw materials from small-scale vegetable farmers. Focus group discussions were conducted with small-scale farmers regarding their perspective on working with agribusiness firms and to establish the distinguishing characteristics of small-scale farmers in the area surveyed. Relevant policy documents collected from two of the three representative groups of the study population, i.e. agribusiness personnel and government officials, provided the essential context. The study revealed a limited number of contract farming business linkages between small-scale vegetable farmers and agribusiness firms in the survey area. Those that do exist are problematic to both the agribusiness firms and the small-scale farmers. It emerged that the contract farming environment in the area surveyed is highly polarised and characterised by a fundamental conflict of interest between agribusiness and farmer. Among the divergent key factors inhibiting contract farming engagement were a lack in terms of quality seeds, trust, entrepreneurial skills and formal contract agreements. Asset endowment (both land and non-land assets) was found to be significant pre-selection determinants in the farmer’s capacity to be contracted. Access to innovative technology, as well as government incentives such as production inputs, were found to be critical to agribusiness firms to engage smallscale farmers in their contract farming programmes. Government assistance in terms of high transaction costs to agribusiness firms working with large groups of small-scale farmers was found to be essential but inadequate under current policy. This impacts directly on the effectiveness and promotion of contract farming. Furthermore, the current results corroborate the findings of numerous South African studies in the vast body of worldwide research. Firstly, lack of land and non-land assets continue to be major impediments to the direct participa-tion of small-scale farmers in contract farming programmes and, secondly, the transaction and market information costs incurred by agribusiness prevent the participation of less endowed farmers in contract farming programmes. Conducted within the interpretivist paradigm, the explorative research identified wide-ranging challenges in the relationship between agri-business and small-scale farmers which directly impact the effective-ness of contract farming as a development and agrarian reform strategy. Despite their problematic relationship, however, agribusiness and small-scale contract farmers were in agreement that the government needs to expand its support for agri-firms to incentivise greater numbers of small-scale farmers having the opportunity to achieve commercial status through contract farming. The study therefore recommends a collaborative partnership between private firms and government, with state support through revised policies and development programmes. These amendments are crucial to enhancing the engagement of small-scale vegetable farmers in lucrative agri-food chains.
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  • Date Issued: 2017

Agricultural urbanism and urban agriculture : exploring the possible role of University of Fort Hare and Buffalo City Municipality in supporting small-scale urban farming in East London, South Africa

  • Authors: Rumsha, Siphamandla
  • Date: 2017
  • Subjects: Urban agriculture -- South Africa -- Eastern Cape Agriculture -- Economic aspects -- South Africa -- Eastern Cape
  • Language: English
  • Type: Thesis , Masters , MSoc
  • Identifier: http://hdl.handle.net/10353/5072 , vital:29054
  • Description: This study investigates the impact of urban agriculture in the city of East London as well as the possibility of adopting agricultural urbanism as an urban farming model to bolster food security. The study goes further to understand the role that could be played by University of Fort Hare and Buffalo City Metropolitan Municipality in capacitating small scale urban farmers in the city of East London. Unemployment and food insecurity are the key challenges that are affecting many families in South Africa, including urban dwellers. The main objective of this study therefore is to investigate the contributions of urban farming in securing food security and livelihoods in East London. This study adopted a mixed methods research approach, where both quantitative and qualitative methods were used to harvest data. Statistical analysis (descriptive) was then used to analyse quantitative data. Thematic approach used to analyse qualitative data. The study shows that urban farming plays an important role in the livelihoods of urban dwellers. However, the sector still faces various challenges such as lack of recognition by authorities. The study also revealed that the city of East London has potential to establish agricultural urbanism as it has most of the essential aspects that are necessary to establish it. The study recommends strengthening of the partnership between University of Fort Hare, Buffalo City Metropolitan Municipality and small scale urban farmers in East London.
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  • Date Issued: 2017

Agricultural-based commodity chains and development: the case of the tobacco sector in Zimbabwe

  • Authors: Thring, Stephen Richard
  • Date: 2017
  • Language: English
  • Type: Thesis , Masters , MSocSc
  • Identifier: http://hdl.handle.net/10962/5337 , vital:20814
  • Description: This thesis examines the nature of governance in the Zimbabwean tobacco value chain and what upgrading implications this has for participants at the lower end of the value chain, with a particular focus on smallholder tobacco growers. The nature of governance and upgrading opportunities will provide further implications for broader economic development in Zimbabwe. Value chain analysis was the over-arching method, adopting a mixed methods approach of both quantitative and qualitative data analysis. Data attained from the Tobacco and Industry Marketing Board (TIMB) was used to construct a Zimbabwean tobacco profile. This information was used to construct a simple Global Value Chain (GVC) framework in order to obtain an understanding of the Zimbabwean tobacco value chain. Information was gathered at the top end of the value chain via documents and data from British American Tobacco (BAT) and information was gathered at the middle and lower end of the value chain through interviews. It was found that the Zimbabwean tobacco value chain is characterised by two types of governance: modular and hierarchy. Modular governance existed where the value chain was disjointed by the leaf merchant and hierarchy governance existed where cigarette manufacturers have vertically integrated themselves backwards into the tobacco growing segment. It was found that contract lines offer smallholder tobacco growers’ financial and technical support that would otherwise be difficult to attain. This increased the likelihood for smallholder tobacco growers to produce a high quality crop that met Good Agricultural Practices (GAP) and other compliancy requirements; therefore achieving product and process upgrading. However, the environmental impact of tobacco growing through deforestation and the possibility of lead cigarette manufacturers relocating their operations to a different geographical location (as is the nature of GVCs) threatens the sustainability of Zimbabwe’s tobacco industry. Despite these issues it was argued that the tobacco value chain could assist Zimbabwe’s economy in diversifying away from simple tobacco production towards valueadding tobacco sectors, such as processing, by-product processing and cigarette manufacturing.
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  • Date Issued: 2017

Agriculture vocational education programme and the promotion of job creation skills in the Free State Technical Vocational Education and Training College

  • Authors: Thwala, William Mandla
  • Date: 2017
  • Subjects: Vocational education -- South Africa -- Free State Job creation -- South Africa -- Free State
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10353/11172 , vital:37199
  • Description: The aim of the study was to investigate agriculture educational programme and the promotion of job creation skills in the OFS FET College. The interpretivism paradigm and design approach were adopted in this qualitative research. The sample consisted of three final year students, three facilitators and one coordinator. The non-probability and purposive sampling techniques was used for the qualitative research. The qualitative data was descriptive, and thematically analysed. The study found that there is a big demand for agricultural professional in South Africa but very few are choosing this career. The quality of education in agricultural sector is not where it should be. The demand for skilled people in the sector is growing, while the number of students enrolling in agriculture-related training continues to decrease. Africa’s agricultural education is failing to produce a new wave of farmers. The study found that FET colleges did not train and provide enough skills to students to enhance development in agriculture sectors and therefore make students non-productive at labour market. The study also found that the FET colleges had left a trail of low skills, partially educated and jobless youth behind. The study also found that the curriculum tended to be outmoded, irrelevant to adequately address the challenges facing modern agriculture .The curriculum still focused on farm production rather than encompassing all segments of agricultural value chains, entrepreneurship, and agriculture business processing market. Agriculture forms the basic food security of every country .It contributes a large proportion of gross domestic product in many developing countries and is the source of income and subsistence for many of the poorest and most vulnerable individuals and households.
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  • Date Issued: 2017

Airline revenue management performance measurement of South African Airways origin-destination revenue management

  • Authors: Githiri, Duncan Wanjau
  • Date: 2017
  • Subjects: Revenue management , Airlines Finance , Performance Measurement , Airlines Rates Mathematical models , South African Airways
  • Language: English
  • Type: text , Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10962/59188 , vital:27455
  • Description: Revenue Management (RM) in the airline industry is the practise of selling fixed capacity as a service over a finite time horizon. The market is characterised by the customers’ willingness to pay different prices for the service. This creates the opportunity to target different customer segments and use price differential to attain the optimal passenger fare mix to maximise revenue. The aim is to maximise revenue and an airline can expect revenue increase of between 3 to 7 percent with the successful implementation of a Revenue Management system. The question of whether the revenue increase can be attributed to the RMS is crucial in determining its level of success and validating the optimisation strategy applied (Rannou and Melli, 2003). South African Airways (SAA) migration from Leg-based optimisation to Origin-Destination (O&D) network based revenue management optimisation created the opportunity for this study to measure and evaluate the RMS performance. Revenue performance measuring tools using inventory systems data to measure RMS performance, ASK (Available Seat Kilometre), RASK (Revenue per Available Seat Kilometre), CASK (Cost per Available Seat Kilometre), RPK (Revenue Passenger Kilometre) and cabin factor yield. The limitations relating to the performance measuring tools utilising inventory system data, is the inability for continuous measurement and the isolation of the impact to revenue due to the RMS on its own. In seeking to gauge the performance of the O&D optimisation, the Revenue Opportunity Model (ROM) is applied. ROM is a post departure measuring tool utilised to continuously measure and isolate the contribution of the RMS on SAA’s O&D network. The revenue opportunity achieved versus the potential revenue was assessed. A revenue comparison of the airlines 2014 and 2015 financial year is performed. The results of the analysis showed the O&D optimisation yielded positive revenue capture on routes that applied the correct optimisation strategy. Recommendations on the optimisation strategy to be applied on routes having average or low revenues captured are presented. The aim is to provide the SAA revenue management department with tangible solutions that would result in increased revenue for the SAA network.
  • Full Text:
  • Date Issued: 2017
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