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The effect of phosphorus fertilizer application on growth, biomass and nutritive value of Pigeon pea (Cajanus cajan (L.) Millsp.) varieties in Alice, South Africa

  • Authors: Mpabanga, Nkosi
  • Date: 2017
  • Subjects: Phosphatic fertilizers Soil fertility Plants -- Effect of phosphorus on
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10353/6180 , vital:29501
  • Description: Low soil fertility has been identified to be among the major causes of low pasture quantity and quality. Scarcity of high quality forage mainly during the dry season threatens animal productivity in some areas of South Africa, thus the need for identifying livestock feed alternatives. Pigeon pea is a woody legume that has continually been an important shrub in agroforestry and can provide protein-rich livestock feed during times of shortage. Soil fertility to support the production of pigeon pea can be enhanced by application of fertilisers. Therefore, this study was carried out firstly, to determine the effect of phosphorus fertiliser on the growth performance and biomass production of three pigeon pea varieties, and secondly, to investigate the influence of phosphorus application on the nutrient and anti-nutrient content of three pigeon pea varieties. The field experiment was done at the University of Fort Hare research farm in Alice, South Africa. The factors investigated were three pigeon pea varieties namely Chitedze 1, Chitedze 2 and CIMMYT 1 and three phosphorus fertiliser application rates of 0, 40 and 60 kg P/ha. The study was a 3× 3 factorial experiment set up in a randomised complete block design and was replicated three times. The growth performance attributes evaluated in this study include the number of branches, plant height and root collar diameter. Root collar diameter was not significantly (p>0.05) different among the pigeon pea varieties and phosphorus levels. Likewise, the application of phosphorus was not significant (p>0.05) on plant height and the number of branches of all the varieties. However, when P level was varied, there were significant differences among the varieties, and so were the interaction (p<0.05) between variety and phosphorus on plant height and the number of branches. There was no significant (p>0.05) difference among the phosphorus levels on the fresh leaf yield of Chitedze 1 and Chitedze 2, but phosphorus application at 40 kg P/ha increased the fresh leaf yield of CIMMYT 1. Phosphorus application at 60 kg P/ha increased (p<0.05) the dry matter content of Chitedze 1 and Chitedze 2. Furthermore, the results of the trial show that the application of 40 kg P/ha and 60 kg P/ha increased (p<0.05) the dry matter yield of the varieties CIMMYT 1 and Chitedze 2, respectively. The effects of phosphorus application on the nutrient composition of the three pigeon pea varieties varied. The composition of hemicellulose of all the varieties was significantly (p<0.05) increased by the application of 40 kg P/ha. Conversely, the concentration of crude protein, phosphorus, copper and iron, and the calcium to phosphorus ratio of all the pigeon pea varieties was not significantly (p>0.05) affected by phosphorus application and there was no interactive effect of variety and phosphorus. The proximate compositions of fat, total non-structural carbohydrates, ash, neutral detergent fibre, acid detergent fibre, cellulose, neutral detergent insoluble nitrogen, acid detergent insoluble nitrogen of the pigeon pea varieties varied significantly (p<0.05) at different phosphorus application levels. There was an interactive (p<0.05) effect of variety and the level of phosphorus on the concentration of calcium (Ca), potassium (K), magnesium (Mg), sodium, zinc, manganese, and the K/(Ca+Mg) ratio. The digestible dry matter, dry matter intake and the relative feed value were significantly (p<0.05) different among the pigeon pea varieties at varying phosphorus levels. The anti-nutrient composition of Chitedze 2 was not significantly (p>0.05) affected by phosphorus application but the concentration of phenols and saponins of Chitedze 1 was significantly (p<0.05) increased when 60 kg P/ha was applied, but these anti-nutrients were reduced (p<0.05) for CIMMYT 1 at 60 kg P/ha. It can be concluded that phosphorus application influences the biomass production and chemical composition while the optimum phosphorus level vary among the pigeon pea varieties.
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  • Date Issued: 2017

The effect of point of substitution and silver based nanoparticles on the photophysical and optical nonlinearity of indium carboxyphenoxy phthalocyanine

  • Authors: Oluwole, David O , Ngxeke, Sixolisile M , Britton, Jonathan , Nyokong, Tebello
  • Date: 2017
  • Subjects: To be catalogued
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/10962/188596 , vital:44768 , xlink:href="https://doi.org/10.1016/j.jphotochem.2017.07.032"
  • Description: Indium(III) chloride 1,8(11),15(18),22(25)-tetra-(3-carboxyphenoxy) phthalocyanine (1) and indium(III) chloride 2,9(10),16(17),23(24)-tetra–(3-carboxyphenoxy) phthalocyanine (2) were covalently linked to glutathione capped silver nanoparticles (AgNPs–GSH) and silver selenide/zinc sulfide (Ag2Se/ZnS–GSH) quantum dots via amide bond formation. The photophysical and nonlinear optical behaviour of the metallophthalocyanines and their conjugates with nanoparticles were investigated using the open aperture Z–scan technique. Complex 2 showed enhanced photophysical properties compared to 1. The conjugates revealed improved triplet state quantum yields (except for 1-AgNPs-GSH which afforded lower triplet state quantum yields in comparison to 1) and nonlinear optical activities in comparison to the Pc complexes. The synthesized complexes, nanoparticles and their conjugates could be potential nonlinear optical materials due to their good nonlinear optical activities.
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  • Date Issued: 2017

The effect of pula devaluation on non-mining export sector in Botswana

  • Authors: Makhale, Lebone Matshelanoka
  • Date: 2017
  • Subjects: Devaluation of currency -- Botswana Inflation (Finance) -- Botswana , Foreign exchange rates -- Botswana Developing countries -- Commerce
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: http://hdl.handle.net/10948/18080 , vital:28574
  • Description: This dissertation investigates the effects of exchange rate devaluation on non-mining exports in Botswana over the period 1984-2012 and the exchange rate pass-through effect to consumer prices. The economy of Botswana is significantly dependent on mineral exports, particularly the diamond. The dominance and over-reliance on diamond exports in the economy has led to low levels of economic diversification. Bank of Botswana has over the years devalued the pula, in attempt to stimulate growth of non-mining export industries and to enhance non-mining export competitiveness. However, raising export competitiveness this way may be inflationary and have no significant effect on non-mining exports. The study investigates the existence of cointegration between real effective exchange rate and the non-mining exports using the Johansen method of cointegration. The vector error correction model is used, to examine the short-run dynamics of the model. The results suggest that a positive long-run relationship exists between real effective exchange rate and Botswana’s non-mining exports. The results of the exchange rate pass-through suggest that nominal exchange rate has a short term relationship with consumer prices in Botswana. However this relationship does not hold over the long run.
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  • Date Issued: 2017

The effect of quantitative feed restriction on growth performance, carcass characteristics and selected meat quality parameters in broiler chickens

  • Authors: Velele, Siphelo
  • Date: 2017
  • Subjects: Broilers (Chickens) Poultry -- Breeding Meat -- Quality
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10353/8888 , vital:33907
  • Description: The study investigated the effects of quantitative feed restriction on growth performance, carcass characteristics, internal organs, breast muscle pH and meat colour in broiler chickens. A total of 90, un-sexed, day-old broiler chicks were procured from an accredited supplier and were used for the current trial. For the first 14 days, all birds were brooded in one house and subjected to a uniform day-to-day management. Water was supplied throughout the trial, whereas, feed was only supplied ad libitum between days 1-14 and 29-35 days in feed restricted birds. Feed phases included starter (1-14 days), grower (15-28) and finisher (29-35), respectively. On day 15, birds were randomly allocated to three treatments; each treatment was replicated three times with 10 birds per replicate. The first treatment (T1) group, which acted as control group, was ad libitum feeding for the whole trial duration (1-35 days). For treatments 2 (T2) and 3(T3), 85 percent and 70 percent of the Cobb 500 broiler feed intake standards were applied for a period of 14 days (days 15-28), respectively. Average daily feed intake (ADFI) was determined daily and then average body weight (ABW) was determined weekly. Feed conversion ratio and average daily weight gain was thus computed for each experimental unit (replicate). On day 35, broiler birds were electrically stunned and slaughtered by a sharp knife and then hung for complete bleeding. Data collected included slaughter, carcass, breast, thigh, wing, drumstick, feet, head, spleen, heart, gizzard, intestines (small & large) and liver weights. Breast muscle was further used for the determination of colour (L*, b* and a*), initial (pHi) and ultimate breast pH (pHu) measurements. Although, quantitative feed restriction (T2 & T3) significantly affected growth performance in weeks 3 and 4, birds submitted to T2 performed similar (P>0.05) to control in the final stage, whilst birds in T3 was the poorest (P<0.05). Furthermore, birds subjected to T2 showed no differences of edible carcass portions to the control, however, T3 group showed lower (P<0.05) slaughter and wing weights. Breast ultimate pH values of birds under T2 were similar to control, but birds in T3 had significantly higher (P<0.05) values. Birds under T2 had less (P<0.05) reddish breast meat colour than control at 45 minutes. At 24 hours post-mortem, birds in T3 had lower (P<0.05) lightness values and birds submitted to T2 had higher (P<0.05) yellowness values. Liver weight was significantly lower in birds under T3 and higher (P<0.05) gizzard weights were found in birds subjected to T2. Birds under T2 performed similar to control and were able to compensate for the weight loss when high plane of feed was re-introduced. It can be concluded from the results that restricting 15 percent of feed from Cobb 500 standard feed intake had moderately affected broiler performance. Moreover, restricting 15percent of feed significantly reduced feed intake in broiler chicken.
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  • Date Issued: 2017

The effect of recent amendments to the LRA within the context of collective bargaining

  • Authors: Kandile, Msondezi Gorden
  • Date: 2017
  • Subjects: Collective bargaining -- South Africa Collective labor agreements -- South Africa , Labor laws and legislation -- South Africa South Africa -- Labour Relations Act, 1995
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: http://hdl.handle.net/10948/17831 , vital:28459
  • Description: The Labour Relations Act, 1995 makes no provision of a legally enforceable duty to bargain, but affords certain rights to unions such as organisational rights. Although employers are obliged to grant these rights to representative unions, they are not compelled to engage in bargaining with them as there is no duty to negotiate. However, the refusal to bargain will result in power play in order to convince the other party to negotiate. If an employer refuses to negotiate with a union, the union is able to strike without any fear of dismissal of its members, provided that the strike takes place with requirements of the Act. The questions that need to be answered are amongst others whether the amendments on organisational rights will truly broaden access to section 14 and 16 rights of the Labour Relations Act? Further than that, to investigate whether these amendments will lead a decline in industrial action related to organisational rights. It also becomes imperative to find whether these arrangements will enable commissioners to carry out the mandate of minimizing the proliferation of trade unions. The study aims to provide understanding of the principles of collective bargaining in the workplace. This in turn promotes better understanding of the rights enshrined in section 23(5) of the Constitution which provides that trade unions, employers’ organisation and employers have the right to engage in collective bargaining. This right is given effect to the Labour Relations Act as amended. The law regarding collective bargaining in South Africa has been interpreted in two ways; the Labour Relations Act refers to a duty to bargain collectively, while the Constitution refers to a right to engage in collective bargaining. These two interpretations have been subjected to judicial criticism in three cases in the South African National Defence Force. They are currently the main cases dealing with this issue in South Africa. The implications that a trade union is entitled to embark on strike action in order to obtain organisational rights in circumstances where it is not regarded as sufficiently representative, provides some form of relief for minority unions. Against this background, the critical legal question is the impact of recent amendments to the Labour Relations Act within the context of collective bargaining.
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  • Date Issued: 2017

The effect of rural development projects on food security and malnutrition

  • Authors: Xipu, Ncedisa Tandile
  • Date: 2017
  • Subjects: Rural development -- South Africa -- Eastern Cape , Food security -- South Africa -- Eastern Cape Food supply -- South Africa -- Eastern Cape Eastern Cape (South Africa) -- Economic conditions
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10948/13447 , vital:27195
  • Description: The purpose of this research was to investigate the impact of rural development projects on food insecurity and malnutrition at Siyazama food garden project in Sakhisizwe Municipality. The study followed a qualitative approach which included in-depth interviews of twenty-six (26) Siyazama food garden project members and four (4) municipal officials. The process of collecting data also made use of observations. Data was analyzed qualitatively, using thematic analysis of the content of the data, which employed an interpretative approach, resulting in a presentation of data, which is textual rather than statistical. The study found that the level of food insecurity and malnutrition in the studied area is still regarded as being high as most of the participants reported that they still have a problem in accessing all the vital nutritional elements which constitute a balanced diet. Also, the study also found that although most of the rural development projects like the Siyazama food gardening project have a profound effect in tackling food insecurity and malnutrition on household level, in South Africa there is a debate about the sustainability or such projects in solving this issue. The study found a number of challenges facing the Siyazama Food gardening project which include: theft, poor management, lack of support, lack of agricultural expertise and conflict amongst members. The study concluded by making some recommendations with to view of resolving the above mentioned challenges.
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  • Date Issued: 2017

The effect of shade on the biological control of Salvinia molesta D.S. Mitchell [Salviniaceae] by the weevil, Cyrtobagous salviniae Calder and Sands [Curculionidae]

  • Authors: Maseko, Zolile
  • Date: 2017
  • Subjects: Salvinia molesta , Aquatic weeds -- Biological control , Beetles , Insects as biological pest control agents
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/4808 , vital:20726
  • Description: Salvinia molesta, a floating aquatic weed, is a global menace in many water bodies and waterways. The weed disrupts the ecological balance wherever it invades and also has wide ranging economic and health impacts. Its impact has resulted in the need to control it, and while chemical and mechanical control are often ineffective, biological control by the weevil Cyrtobagous salviniae is largely successful. However, in many parts of the world, including South Africa, biological control of S. molesta has been less effective where the weed grows as an understory species. Shallow and shaded waters characteristically found at the margins of water bodies provide a refuge for S. molesta. Therefore, the aim of the study was to determine the effect of shade on the efficacy of biological control of S. molesta. Investigations into the problems associated with control in the shade were carried out in a greenhouse and in the field. In controlled greenhouse experiments, plants were grown at high and low nutrient levels in individual mesocosms, at three varying levels of shade, where half the mesocosms were inoculated with C. salviniae. Plants in high nutrient conditions were significantly more productive in terms of biomass accumulation, compared to those grown at low nutrient levels, in both the absence and presence of herbivory at all levels of shade tested. Plants grown in the shade and in high nutrient conditions had significantly higher quality compared to the ones exposed to full sun. Higher plant quality in the shade consequently resulted in accelerated fecundity for C. salviniae resulting in significantly higher weevil populations. Furthermore, less damage was recorded on plants in the shade, possibly due to the high nitrogen concentrations which may have deterred grazing by C. salviniae. However, in the absence of shading, plants were of lower quality and consequently sustained more damage from herbivores despite lower weevil populations. In contrast to the greenhouse, there were no differences in biomass recorded in the field at two nutrient levels and in the presence of herbivory for both shade and open sites. Nutrients added to high nutrient treatment quadrats diffused evenly across the water body resulting in uniform nutrient distribution, hence uniform plant biomass and carbon-nitrogen ratio. Despite the lack of statistical differences, more weevils were found in the full sun plots, while modest populations were recorded in the shade. Higher weevil populations consequently led to more damage in the sun, a situation that has been observed in most field sites in South Africa. The results therefore suggest that nutrients were pivotal in plant growth compared to light regimes (amount of PAR). Plant quality significantly influenced weevil populations and plant damage in both studies, demonstrating that plant nitrogen plays a crucial role in the plant- herbivore system. Furthermore, in both the greenhouse and field, despite lack of statistical differences, plants exposed to full sunlight suffered more damage than shade plants, pointing towards better control in the sun compared to the shade, suggesting that there is greater preference of sun-exposed plants for grazing by the weevils. The results from this study add to the growing body of literature that plant quality is a major factor in determining the success of aquatic weed biological control programmes.
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  • Date Issued: 2017

The effect of strategic leadership on competitive advantage & innovation performance : a case of small business in the Buffalo City Metropolitan Municipality

  • Authors: Maziti, Lindah
  • Date: 2017
  • Subjects: Small business -- Technological innovations Small business -- Management Competition
  • Language: English
  • Type: Thesis , Masters , MCom
  • Identifier: http://hdl.handle.net/10353/8619 , vital:33200
  • Description: Orientation: The manner in which Small, Medium and Micro Enterprises (SMMEs) perform is important for the sustainability of the enterprise. The role of strategic leadership on competitive advantage and innovation performance are investigated within this. Research purpose: To determine whether strategic leadership has an effect on competitive advantage and innovation performance in SMMEs. Secondly, to determine if innovation performance has an effect on competitive advantage. Motivation for the study: Contradictory views still exist on the concept of strategic leadership and its effect on competitive advantage and innovation performance and the effect of innovation performance on competitive advantage in SMMEs. This study contributes to these views within the South African SMME context. Research design, approach and method: A cross-sectional survey design was used and a questionnaire self-administered to a sample of 275 SMMEs in the Buffalo City Metropolitan Municipality drawn through simple random sampling from a population 950 SMMEs available from the Eastern Cape Development Corporation (ECDC) database. Main findings: The result showed that strategic leadership have a positive effect on competitive advantage and innovation performance in SMMEs. Furthermore, the results showed that there is a positive effect of innovation performance on competitive advantage in SMMEs. Practical implications: More is needed to develop strategic leadership. This can be done through leadership training and development, support from government of leaders of SMMEs and finally, a leader can take personal efforts to acquire competencies that allow them to make better decisions in managing the small business. Contribution: The study advances theory on leadership by showing its role on competitive advantage and innovation performance.
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  • Date Issued: 2017

The effect of submersion in water and breathing modality (assisted breathing and apnea) on different stages of the information processing chain

  • Authors: Goodenough, Luke Brian
  • Date: 2017
  • Subjects: Deep diving -- Physiological aspects , Scuba diving -- Physiological aspects , Apnea , Cognition -- Testing , Neurophysiology , Underwater breathing apparatus
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/7448 , vital:21261
  • Description: Limited research has explored the impact of working underwater on the cognitive functioning of divers and even less has focused on the effect of breathing modality (assisted breathing and apnea) underwater. Research on the effect of submersion in water and apnea on cognitive performance is also very limited. As a result, the purpose of this study was to determine the effect of submersion in water and breathing modality on different stages of the information processing chain. This was achieved by testing participants in a laboratory setting under three conditions; on land, underwater with assisted breathing and underwater in apnea. Five different tests were used to determine which aspects of cognitive functioning were impaired in which condition. The recognition task result in the assisted breathing condition was significantly faster (p=0.04) but less accurate (p=0.01) than on land. The memory task was significantly (p=0.042) worse in terms of speed in the apnea condition compared to land, however accuracy was not affected. Performance in the visual detection task was impacted on in both underwater conditions compared to land with speed and accuracy being significantly worse (p<0.01) in the underwater conditions. These results indicate that simple tasks, (reaction time and tracking task) are not affected by condition whereas more complex tasks are. For tasks where an effect was found for only one condition, the effect was attributed to a specific aspect of that condition; either the breath hold or assisted breathing component of the condition. For tasks that were found to be affected in both underwater conditions, the effect was attributed to the actual submersion in water. The effect of the different conditions and the nature of the task they impact on should be considered for underwater work places as the general equipment used may impact on the quality of observations that are made.
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  • Date Issued: 2017

The effect of synthetically-derived xanthone compounds on the suppression of the progression of breast cancer and the associated complications

  • Authors: Davison, Candace
  • Date: 2017
  • Subjects: Breast -- Cancer -- Chemotherapy Breast -- Cancer -- Prevention , Antibacterial agents -- Therapeutic use
  • Language: English
  • Type: Thesis , Doctoral , DPhil
  • Identifier: http://hdl.handle.net/10948/13889 , vital:27354
  • Description: Breast cancer is the most frequently diagnosed cancer in women worldwide.A treatment regime, both effective and safe and can only be achieved once more effective chemotherapeutic agents are discovered or identified. These “drugs” must selectively induce cell death such as apoptosis or necroptosis in the cancer cells. Apoptotic cell death allows a cell to “commit suicide” in genetically- controlled or programmed mechanism(s). The microenvironment of the tumour is important since a nurturing malignant environment is required for tumour maintenance, progression and ultimately the development of metastasis. Due to the correlation of the tumour microenvironment to aggressive tumour progression, emphasis should be placed on the constituents of the tumour’s microenvironment. In recent years, the understanding of intracellular pathways in cancer cells has increased rapidly, contributing to the development of drugs with more specific targets such as growth factors, signalling molecules, cell adhesion proteins, proteases, cell-cycle proteins, modulators of apoptosis and molecules that promote angiogenesis and metastasis. The main aim of this study was thus to identify a few potential or active compounds from a library of synthetically-derived compounds as possible alternative breast cancer treatment candidates.
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  • Date Issued: 2017

The effect of the integration of design, procurement, and construction relative to health and safety

  • Authors: Deacon, Claire Helen
  • Date: 2017
  • Subjects: Construction industry -- Management Building -- Safety measures , Industrial safety
  • Language: English
  • Type: Thesis , Doctoral , PhD
  • Identifier: http://hdl.handle.net/10948/15038 , vital:28115
  • Description: The rates of fatalities, injuries and diseases from work, has been a longstanding challenge for centuries. The challenge is validated by the fact that there is not a paper, or publication, that appears to have been written worldwide, without discussion regarding the extent of the problem in the construction industry. Despite there being prescriptive statutory requirements applicable to the sector, all attempts to reduce the reduce the accident rates in South Africa appear to have been largely unsuccessful. The review of literature indicates that most research has focused on design, designers, roles of stakeholders, inter alia that relate to construction health and safety. Given the situation noted, the research investigated design, various aspects of the construction process and stakeholders, and the inclusion of procurement as a major component of the construction process. A triangulated, or mixed methods research methodology was utilised for the thesis. The qualitative methodology utilised in Action Research (AR) and a total of three FGs’ sought to develop a theoretical model that would identify multi-stakeholder policies, practice and education requirements. An extensive international, African and South African literature review was conducted as part of the secondary research and the grounding for the mixed methodology of research. The information sought to contextualise the South African paradigm and practices. Two quantitative, multi-stakeholders’ studies were conducted during the development of the research. The quantitative aspect considers the perceptions of those practicing or involved in H&S, the interface regarding the stakeholders and ‘issues’ experienced in the challenges relating to daily work. Themes were developed, inter alia: a general; workers; management (including supervision, responsibilities and pricing); a stakeholders’ theme (including project managers; design and designers, and client), and the construction H&S theme (including the CHSA, construction H&S Manager (CHSM), construction H&S Officer (CHSO)). A total of 22 hypotheses were tested. The hypotheses considered all the stakeholders, within the framework of the research. Only 1 hypothesis was not supported, and hypothesis was partially supported. Three AR FGs’ were held in the Sarah Baartman District (a building focus) and at the Bhisho offices (a civil engineering focus) of the ECDRPW. The research considered the procurement processes that underpins a project, with some elements relative to the interface of H&S, design, the stages of work, and the current legislative framework. A validated theoretical model, the ‘Deacon Procurement, Design and Health and Safety Model’ emerged from the qualitative aspect of the research. The salient findings indicate a tendency in the industry to operate in silos, adhere to minimum levels of compliance, and not determining other aspects that could possibly reduce project and financial risk. Therefore, stakeholders need to work together, across the stages of work. Level of confidence is low among clients and built environment groups regarding H&S across the project life cycle, resulting in the non-compliance, and increased project risk. Clients such as the National Treasury do not identify H&S risks during project planning, resulting in the lack of adequate resources for projects, with supply chain management and procurement not ensuring compliance and technical expertise. Due to lack of knowledge CHSAs’, CHSMs’, and CHSOs,’ are not appointed timeously, resulting in noncompliance, and increased project risk. The construction H&S practitioners level of confidence is affected by lack of experience, not knowledge, in contrast to the lack of H&S knowledge of built environment professionals. A range of recommendations are provided that include, inter alia: development of policy, guidelines and practice notes regarding H&S, supply chain management and procurement; education and training, continuing professional development, training and workshops, and further research.
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  • Date Issued: 2017

The effect of the Marikana events on the collective bargaining process in South Africa

  • Authors: Butjie, Boitumelo Cordelia
  • Date: 2017
  • Subjects: Collective bargaining -- Mining industry , Strikes and lockouts -- Miners -- South Africa -- Marikana
  • Language: English
  • Type: Thesis , Masters , LLM
  • Identifier: http://hdl.handle.net/10948/9239 , vital:26482
  • Description: The basic structures of collective bargaining in South Africa have evolved since industrialisation, through the Wiehahn-Commission era until the Farlam one and beyond, resulting in a number of legislative changes from 1924 to 2014. While dealing with collective bargaining, it is not possible to divorce the powerful history of mining from the South African story, from the diamond fields in Kimberley to the discovery of gold on the Witwatersrand in 1886, where the mine employees’ focused on cheap, unskilled labour and migrant system in the 1900s to the tragic events at Marikana in 2012. In the advent of the industry revolution, employment relationships changed as competitive demands placed a great need for advancing economic developments which are often expressed through collective-bargaining. The objective of collective bargaining is to arrive at an agreement between the employer and employees to determine mutually beneficial terms and conditions of employment such agreement may prohibit unions to embark on an industrial action for as long as it is in place. Strikes became important during the Industrial Revolution, when many worked in factories and mines. Often when employees’ demands are not met, they resort to strike action. Strike action is when a number of employees stop rendering their service in protest to express their grievances. These strikes are usually led by labour unions to get better pay, working hours or working conditions during collective bargaining as a last resort. While trade union leadership fails to advance employees’ cause, employees resort to informal alternative structures to negotiate on their behalf. South Africans have a tradition of taking to the streets in protest when unhappy about issues and this tradition did not spring up during the apartheid era but has been around from as early as 1922 to date. Protests in South Africa today draw from past repertoires and at the same time push for new political practices and directions. Strikes are often used to: Pressure governments to change its policies like in the Rand Revolt; Strikes can destabilise the rule of a particular political party like a series of strikes by blacks in the 1970s and 1980s including the 1973 Durban dockworkers and the 1987 miners’ strikes; Strikes are often part of a broader social movement taking the form of a campaign of civil resistance like Treatment Action Campaign and community struggles such Abahlali Base Mjondolo. On the strike issues in South Africa, the researcher draws from the terrible incident that transpired in August 2012 at Lonmin Mine-Marikana and how it has affected the collective bargaining landscape in South Africa. The first real and significant labour unrest, the Witwatersrand miner strike rocked South Africa to the core in 1922 and in 2012, ninety years later the violent strike by the Rock Operational Drillers at Lonmin following the Marikana massacre and as such did not enjoy statutory protection under the LRA because was classified as wildcat strike. Normally, a wildcat strike constitutes a violation of a collective bargaining agreement in place and as such is not protected unless a union joins it and ratifies the protest. The union may, however, discipline its members for participating in a wildcat strike and impose fines. Among other things miners mainly demanded a wage increment of R12500 per month. The fight between AMCU and NUM for organisational rights also found its way into the equation. A strike wave, not only linked to the mining sector, made 2012 the most protest filled year since the end of apartheid, rolled out across South Africa, closing some industrial operations and crippling others. Commentators argue that the strike wave emerged from a landscape of extreme inequality and poverty, made intolerable by the additional financial burdens arising from the migrant labour system. These factors influenced the industrial action and institutions of collective bargaining comprising of both company and union structures and processes, were found wanting in their ability to address the root causes of the crisis. The post-Marikana strike wave made a mark in the workers struggle movement as it drew in thousands of workers to join AMCU and at the same time weakening NUM, the then majority union. The strike led to the rise and growth of AMCU which was seen by miners as the driver for change. The 2012 strike wave and the Marikana massacre not only changed the balance of forces on the ground against the NUM, but also generated divisions within COSATU. The divisions were between those who decided to remain deaf to the workers’ call for transformation and those who had already realised that a decisive turn in economic policy was needed to avoid a social, economic and political crisis. In the aftermath of the strike, a number community struggles increased as 2012 began and on the other side, a number of splinter groups from COSATU mushroomed which was hobbled by in fights. NUM’s collapse is indeed part of a series of recent failures for COSATU.
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  • Date Issued: 2017

The effect of the Xpert MTB/RIF test on the time to MDR-TB treatment initiation in a rural setting: a cohort study in South Africa’s Eastern Cape Province

  • Authors: Iruedo, Joshua , O’Mahony , Don , Mabunda, Sikhumbuzo A , Wright, Graham , Cawe , Busisiwe
  • Date: 2017
  • Subjects: South Africa Multidrug-resistant tuberculosis Computer File
  • Language: English
  • Type: text , article
  • Identifier: http://hdl.handle.net/11260/6098 , vital:45115 , https://DOI10.1186/s12879-017-2200-8
  • Description: Background: There are significant delays in initiation of multidrug-resistant tuberculosis (MDR –TB) treatment. The Xpert MTB/RIF test has been shown to reduce the time to diagnosis and treatment of MDR-TB predominantly in urban centres. This study describes the time to treatment of MDR-TB and the effect of Xpert MTB/RIF on time to treatment in a deprived rural area in South Africa. Methods: This was a retrospective cohort study analysing the medical records of patients diagnosed with MDR-TB in King Sabata Dalindyebo Sub-District between 2009 and 2014. Numerical data were reported using the Kruskal-Wallis and Wilcoxon sum rank tests and categorical data compared using the two-sample test of proportions. Results: Of the 342 patients with MDR-TB identified, 285 were eligible for analysis, of whom 145 (61.4%) were HIV positive. The median time from sputum collection to MDR-TB diagnosis was 27 days (IQR: 2–45) and differed significantly between diagnostic modalities: Xpert MTB/RIF, 1 day (IQR: 1–4; n = 114: p less 0.0001); Line Probe Assay 12 days (IQR: 8–21; n = 28; p less 0.0001); and culture/phenotypic drug sensitivity testing 45 days (IQR: 39–59; n = 143: p less 0.0001). The time from diagnosis to treatment initiation was 14 days (IQR: 8–27) and did not differ significantly between diagnostic modality. The median time from sputum collection to treatment initiation was 49 days (IQR: 20–69) but differed significantly between diagnostic modalities: Xpert MTB/RIF, 18 days (IQR: 11–27; n = 114; p less 0.0001); Line Probe Assay 29 days (IQR: 14.5–53; n = 28; p les 0.0001); and culture/phenotypic drug sensitivity, 64 days (IQR: 50–103; n = 143: P less 0.0001). Age, sex and HIV status did not influence the time intervals. Conclusions: Xpert MTB/RIF significantly reduced the time to MDR-TB treatment in a deprived rural setting as a result of a reduced time to diagnosis. However, the national target of five days was not achieved. Further research is needed to explore and address programmatic and patient-related challenges contributing to delayed treatment initiation. Keywords: Xpert MTB/RIF, MDR-TB, Rural, Time-to-treatment, Cohort study
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  • Date Issued: 2017

The effect of total standing duration during sit-stand regimes on cognitive performance, rating of perceived exertion and heart rate frequency

  • Authors: Berndt, Ethan
  • Date: 2017
  • Subjects: Standing position , Sedentary behavior , Work environment , Employee health promotion , Office furniture -- Design , Industrial hygiene , Employees -- Health risk assessment , Human engineering
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/7433 , vital:21260
  • Description: Although there may be numerous health benefits of sit-stand workstations, the effects of sedentary or non-sedentary work configurations on cognitive performance and executive function remain unclear (Bantoft et al., 2016). It is essential to determine any performance effects of these different work configurations; as improvements in the workplace, working posture and discomfort need to be justified in terms of improvements (or no deterioration) in work performance (Liao and Drury, 2000). The aim of the current research was to investigate the effect of two sit-stand regimes differing in total standing duration, on cognitive task performance, physiological responses and subjective ratings of perceived exertion. This laboratory based investigation incorporated a repeated measures design, where a test battery was utilized. Three experimental conditions were tested during three separate testing sessions by 30 participants. Condition 2 (15 minutes standing, followed by 45 minutes seated) and Condition 3 (15 minutes seated, followed by 15 minutes standing, followed by 15 minutes seated, followed by 15 minutes standing) were compared to each other and Condition 1 (60 minutes seated). The findings of this study show that even though the two different sit-stand regimes did not result in a significant impact on cognitive task performance, an immediate postural effect for psychomotor response time and a delayed postural effect for working memory were found. The participants perceived Condition 3 as the most physically exerting condition. Heart rate frequency was not significantly different between the conditions, but the immediate seated posture had a significantly lower heart rate frequency compared to the standing posture; indicating that being seated elicited lower energy expenditure compared to standing. Heart rate frequency while standing had a greater degree of variation compared to being seated. Taking the findings of this study into account, it is recommended that: one should be seated while performing this type of working memory task; that one should be standing while performing this type of psychomotor task; that the recommendation that implementing standing at work can be used as a blanket strategy to increase energy expenditure in all individuals needs to be explored further and that individual differences may impact energy expenditure.
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  • Date Issued: 2017

The effect of using a six brick Duplo block guided play approach on pre-school learners’ visual perceptual abilities

  • Authors: Jemutai, Sarah
  • Date: 2017
  • Subjects: Teaching -- Aids and devices , Early childhood education -- South Africa Early childhood education -- Kenya Education, Preschool -- South Africa Education, Preschool -- Kenya
  • Language: English
  • Type: Thesis , Masters , MEd
  • Identifier: http://hdl.handle.net/10948/17724 , vital:28442
  • Description: This study investigated the possible effects that the use of guided play using the 6 Brick Duplo Block approach might have in terms of the development of aspects of visual perception in pre-literate 5-7year old children. An explanatory sequential mixed-method design was employed. Seventy-seven Grade R learners in two schools, one in the Republic of South Africa and the other in the Republic of Kenya, comprised the purposive convenience sample. Quantitative pre- and post-intervention data were generated using the Visual Perception Aspects Test (VPAT) and analysed using Excel functions to generate descriptive and inferential statistics. The pre-test mean score in the Kenyan school was statistically and practically significantly lower than the South African pre-test mean score. This difference was attributed to the amount and type of play that took place in the natural settings of these schools prior to the intervention and the nature and amount of play material available in each. The largest improvements from the pre- to post-tests occurred in the South African and Kenyan experimental groups and the difference between them dropped from the 99% level of confidence in the pre-test to the 95% level of confidence in the post-test. These findings suggest that using the 6 Brick Duplo Block approach may accelerate the development of aspects of visual discrimination in pre-literate 5-7-year-old children and that the approach may be most effective when used with children who have had little previous exposure to guided play at school. Qualitative data were obtained through open-ended classroom observations and semi-structured teacher interviews with the experimental group class teachers. Classroom observation revealed that the learners were enthusiastic about the guided play and the semi-structured interviews revealed that they realise the importance of using guided play for developing the visual skills necessary for reading, writing and numeracy. The overall findings of this study suggest that the development of aspects of visual perception were accelerated in the study sample of pre-literate Grade R learners when their teachers facilitated guided play using the 6 Brick Duplo Block approach. Recommendations are made that curriculum developers, early childhood advisors and teachers should be made aware of the potential of using guided play and reconsider the Piaget‟s stages of cognitive development to design appropriate instructional materials that promote learners‟ visual perceptual growth and development.
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  • Date Issued: 2017

The effectiveness of health and safety service providers' relative to construction

  • Authors: Ayesu-Koranteng, Emma
  • Date: 2017
  • Subjects: Construction industry -- Health aspects -- South Africa Industrial safety -- South Africa
  • Language: English
  • Type: Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10948/15149 , vital:28151
  • Description: The construction industry (CI) is well known to be one of the most dangerous industries in South Africa (SA) due to the complex nature of construction activities, advancement in technologies and an aging workforce, emphasising the need for training. Over the past two decades, the industry has come under the spotlight regarding Health and Safety (H&S). The Occupational Health and Safety (OH&S) Act 85 of 1993 and Construction Regulations (CR) 2014 as amended are the statutes that govern the H&S in the construction workplace. These statutes aim to provide minimum guidelines by which all operating in the industry should abide by in order to ensure the safety of all persons at work. A fundamental aspect of the OH&S Act and CR is for construction employers to assess occupational hazards and conduct risk assessments with remedies to mitigate or prevent such risks. Furthermore, employers are compelled by law to ensure that employees are made aware of the risks at the induction stage, in addition to preventative measures associated with their work activities. Therefore, training forms the structure by which H&S in the workplace can be improved. Training in itself is not enough if it is not based on the employees’ needs as assessed. Training needs to be relevant and effective if it is to have a significant effect in the prevention and possible reduction in the number of occupational injuries and fatalities in the CI. A question that led to the basis of this research was why there were such poor H&S practices in the CI when the statutes clearly require the importance of training. This research is aimed at establishing the effectiveness of service providers relative to construction. Service providers offer services such as training, auditing, SHEQ management, and other H&S related matters. Of fundamental importance is that training has a direct or indirect influence on the health and safety (H&S) of employees in the workplace. Thus, this research aims to determine the effectiveness of training offered by these service providers relative to construction. The researcher utilised the quantitative data collection method to collect primary data from a sample surveyed through a questionnaire, whilst collecting secondary data from books, the Internet, professional journals, and articles. The sampled population consisted of service providers, health and safety practitioners, construction managers, supervisors, and workers, all from the Nelson Mandela Bay Municipal Area. The data was analysed quantitatively using the Statistical Package for Social Sciences (SPSS), ANOVA and the one-sample t-test. The literature reviewed and findings of this quantitative research amongst construction personal such as top, senior, middle management (TSMM), and general workers and labourers (GWL) in the Nelson Mandela Bay Municipal area formed the basis of this study. The study reveals that training offered by service providers was indirectly unrelated to construction. Furthermore, the study also showed that management concurred that there was a strong belief that language did not influence their ability to understand the contents of the training, which is mainly provided in English. The group believed that training from service providers were at the correct level. Alternatively, GWL were of the belief that language influenced their ability to understand the training received. The study also indicated that procurement of these service providers were not based on their skills, knowledge and background in construction. This may be attributed to the fact that management are more advanced in terms of education than GWL. Lastly, the study revealed that a significant number of Safety, Health and Environment (SHE) officers are in the process of registering with the South African Council for the Project and Construction Management Professions (SACPCMP), the professional body responsible for the registration of Construction Health and Safety (CH&S) professions. This study will conclude with findings, conclusions, and recommendations that will be valuable to construction companies relative to the services of service providers.
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  • Date Issued: 2017

The effectiveness of Lesotho's industrial policy in poverty reduction

  • Authors: Tlhatlosi, Lekupa Paul
  • Date: 2017
  • Subjects: Poverty -- Lesotho Industrial policy -- Lesotho -- Economic conditions
  • Language: English
  • Type: Thesis , Masters , MA
  • Identifier: http://hdl.handle.net/10948/45475 , vital:38620
  • Description: This study investigated and evaluated whether the Lesotho’s Industrial Policy had been effective in poverty reduction. The study focuses on the manufacturing sector in Lesotho to establish the effectiveness of the policy on workers in this sector. These people are often characterized by low education, lack of skills and poverty among other things. The study revealed that the current Industrial policy in Lesotho is no longer appropriate, relevant or responsive to the needs of Lesotho and Basotho people. It is not reducing or addressing the poverty situation but rather, it promotes and paves the way for activities that increase poverty in Lesotho. Poverty has remained the subject of intense debate to the extent that it has inhibited consistency in policies, resulting in less substantial success. Where there is a shared vision, views on the causes of poverty and conflicting goals and priorities often result in compromises and inconsistencies. Therefore, the link between policy and poverty reduction becomes important and influential since whichever strategy is applied and followed will have direct results and bearing on the policies. Lesotho is faced with serious challenges of unemployment, poverty, HIV/AIDS and other development deficiencies due to the increasing closure of mines in the Republic of South Africa, high retrenchment rates, declining prices of both gold and other commodities on the world market and the changing faces and demands of the world.
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  • Date Issued: 2017

The effectiveness of medium-fidelity simulation on the clinical readiness of student midwives

  • Authors: Ntlokonkulu, Zukiswa Brenda
  • Date: 2017
  • Subjects: Obstetrics Midwifery Emergency medical services , Simulated patients
  • Language: English
  • Type: Thesis , Masters , MCur
  • Identifier: http://hdl.handle.net/10353/4503 , vital:28345
  • Description: Simulation affords the student a safe and supportive environment in which to practise skills repeatedly without causing any harm to a real patient. The Department of Nursing Sciences at the University of Fort Hare has a laboratory that offers lowto medium-fidelity simulation in the form of task trainers and mannequins. These task trainers and mannequins are used in general nursing, and in community and midwifery nursing sciences, for the demonstration of skills, the practising of skills by students and for formative assessments. In midwifery, task trainers are used for vaginal examinations, abdominal palpation breech and vaginal deliveries and the management of post-partum haemorrhage (PPH). Given that in a real-life clinical environment limited opportunities exist for students to practise during an obstetrical emergency, medium-fidelity simulation (MFS) in midwifery ideally positions the student in a practical environment without risking the patient’s safety. Despite the availability of MFS at UFH, its benefit on the clinical readiness of student midwives is not known. The present study was designed to assess the effectiveness of MFS in enhancing the clinical readiness of student midwives at the University of Fort Hare. The main research objective of the study was to explore, describe and analyse the effect of medium-fidelity simulation on student midwives’ confidence, critical thinking ability, communication, satisfaction and team work in an obstetrical clinical emergency environment. This was a qualitative, interpretive, phenomenological analysis designed to explore the student midwives’ lived experiences regarding the effectiveness of mediumfidelity simulation and the effect of these experiences on clinical readiness. The target population was fourth-year Bachelor of nursing student midwives at the University of Fort Hare. Purposive sampling was used to select five student midwives who were team leaders during the management of PPH using MFS. Ethical approval was granted by the University of Fort Hare Ethics Committee. Informed consent was obtained from the participants prior to data collection. Trustworthiness was ensured by observing the principles of transferability, credibility, confirmability and dependability. Data was collected through individual face-to-face interviews and a semi-structured interview guide. All fourth-year student midwives had viewed an on-line video entitled Essential Steps in Management of Obstetrical Emergency(ESMOE) Postpartum Haemorrhage, in which the procedure was demonstrated. The video, sent via Backboard, was presented in such a way that student midwives had the opportunity to watch it repeatedly in order to thoroughly comprehend the demonstrated skill. A semi-structured interview guide was used for data collection. Interviews were conducted in the simulation laboratory. A Samsung smartphone was used to record interviews and a notepad was used to make notes of gestures, such as smiles or other facial expressions. Data was analysed using thematic content analysis applicable to interpretative phenomenological analysis (IPA) studies using the six steps: reading and re-reading; initial noting taking; developing emergent themes; searching for connections across the emergent themes; moving to the next case and lastly, looking for patterns across cases. The major findings indicated that the participants had differing views regarding the concept of clinical readiness; some held that clinical readiness meant being ready or prepared to handle any eventuality in the course of work, others opined that it was a state of being conversant with the policies and procedures in the clinical ward. Participants believed that clinical readiness was parallel to being competent and that midwives should always be ready to anticipate complications that might arise with the patient, endeavouring to analyse and interpret such conditions clinically. Participants expressed the need to see the simulation skill demonstrated repeatedly for thorough understanding of the technique, so that they could work independently in an obstetrical emergency situation. During simulation, participants were confident in delegating duties to team members, affirming that in order to ensure that tasks were carried out, team leaders should receive regular updates from team members.
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  • Date Issued: 2017

The effectiveness of the strategic decision-making process in an automotive multinational company

  • Authors: Naidoo, Kushen
  • Date: 2017
  • Subjects: Strategic planning Decision making , Automobile industry and trade
  • Language: English
  • Type: Thesis , Masters , MBA
  • Identifier: http://hdl.handle.net/10948/50055 , vital:41997
  • Description: Strategic decision-making has become a crucial part of running an organisation as a result of globalisation. When large multinational companies grow over time there will need to be an emphasis on making effective strategic decisions in order to operate the multinational successfully. Currently most of the strategic decisions are made at the parent company within ABC Automotive. The aim of this study was to determine what decisions could be made by the local subsidiary instead of decisions being made at the parent company. The objective of this paper was compiled in order to investigate the effectiveness of the strategic decision-making process within an automotive multinational company by gathering relevant information through specified communication channels. This study follows a case study format of ABC Automotive based in South Africa. The study focuses on describing the decision-making process in an automotive multinational company with an emphasis on centralised and decentralised strategic decision-making processes. This is supported by defining the steering department of the automotive multinational company under the study called ABC Automotive. From the literature reviewed this study focusses on main strategic key decisions which are; financial; production; marketing; operational; employment; personnel; and research and development. The study is then concluded with recommendations made by the researcher based on the literature review and the empirical study. The recommendations include the description of which decisions ABC Automotive is able to make at the local subsidiary as opposed to decisions being made at the parent company.
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  • Date Issued: 2017

The effects of a lion (Panthera Leo) re-introduction on a resident cheetah (Acinonyx Jubatus) population In Mountain Zebra National Park, Eastern Cape, South Africa

  • Authors: Van de Vyver, Daniel
  • Date: 2017
  • Language: English
  • Type: text , Thesis , Masters , MSc
  • Identifier: http://hdl.handle.net/10962/7420 , vital:21259
  • Description: The global decline of large (> 10 kg) carnivores has resulted in a variety of conservation measures being put into practice to prevent extinctions. The establishment of predator-proof fences around protected areas has been a successful tool for reducing human-predator conflict. Furthermore, the re-introduction of large carnivores into small (< 1 000 km²), enclosed reserves has aided in the conservation of many species. Cheetahs (Acinonyx jubatus) and lions (Panthera leo) have benefitted from such re-introductions. The re-introduction of cheetahs before lions into the Mountain Zebra National Park (MZNP) in the Eastern Cape Province of South Africa provided a unique opportunity to study the effects of lions on an already established cheetah population. Spatial data were downloaded remotely from GPS collared individuals (n=4) and cheetah kill data were collected using the GPS cluster method before (2012-2013) and after (2013-2014) the lion (n=3) re-introduction. The same methods were used for lion kill data collection once they had been re-introduced. In general, cheetah home range size did not change after the lion re-introduction. Cheetahs selected areas with a combination of open and closed vegetation covers, while lions selected either open or closed areas of vegetation covers. In addition, as vegetation cover became thicker, the presence of cheetahs decreased. The cheetahs preyed upon seven species before and 11 species after the lion re-introduction. Medium sized prey comprised the bulk of the cheetah diet with kudu (Tragelaphus strepsiceros) and springbok (Antidorcas marsupialis) being the preferred species both before and after the lion re-introduction. The lion diets consisted of medium to large sized prey, with the male lions selecting eland (Tragelaphus oryx) and buffalo (Syncerus caffer) and the lioness selecting red hartebeest (Alcelaphus buselaphus). The cheetahs had no significant dietary overlap with the lions and there was only one record of kleptoparasitism. The results of my study indicate that cheetahs are able to co-exist with lions when lions are at low densities in an enclosed reserve. The cheetahs did not experience landscape-level displacement because they made fine-scale adjustments to avoid lions within their environment. This adaptability may have important management implications for future re-introductions of cheetahs into enclosed game reserves.
  • Full Text:
  • Date Issued: 2017
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