Implementation of strategies used to manage conflict between students and staff in secondary schools in Malawi : towards a comprehensive framework
- Authors: Zimpita, Valentino Tipitana
- Date: 2018
- Subjects: Conflict management Conflict management -- Study and teaching Violence -- Prevention
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9412 , vital:34348
- Description: The study aimed at examining how strategies used to manage conflict between students and staff in secondary schools in Malawi were implemented. This was after it had been noted that conflicts in secondary schools in Malawi usually ended in violence. The study employed a pragmatic research paradigm. In this paradigm, a researcher employs mixed methods approach which collects both quantitative and qualitative data. Using a concurrent triangulation mixed method design, the two types of data were collected concurrently and analysed simultaneously. Study participants were head teachers, teachers, students, education officials and parents. Most of the teachers were randomly sampled while a few other teachers, the head teachers, the education officials and the parents were purposefully sampled. The study found that there were various causes of conflict in secondary schools in Malawi which included misunderstanding of human rights, poor communication between students and staff, poor school management by head teachers and lack of students‘ involvement in decisions that concerned them. The study further found that conflict was in a way beneficial to schools as it was a learning point for both students and staff. However, such benefits were overshadowed by the many evils that violence brought such as disturbing teaching and learning. The study also found that there were two approaches in the way schools managed conflict; engagement of students and calling for police intervention. It transpired that on the overall, stakeholders were aware of different conflict management skills but they did not know how best to use them. In addition, it transpired that stakeholders were not comfortable with win-win approaches to conflict management. This was against a background that the stakeholders were involved in conflict management in different ways. It also came out clear that support to secondary schools in the management of conflict was at two levels; school level and system level. On the part of monitoring, it transpired that the mechanism which were there were ad hoc and they included inspection visits and the requirement that head teachers should always submit reports which could carry issues related to conflict. The study concluded that poorly managed conflicts which turned into violence were a menace to secondary schools in Malawi. In this regard, there was need to ensure effective conflict management in order to avoid violence. To achieve this, the study has made a number of recommendations. Among them, it has been recommended that schools should from time to time take stork of the likely causes of conflict and address them accordingly. It has also been recommended that schools should put in place mechanisms for ensuring two way communication so that students feel free to air out their concerns. At Ministry level, it has been recommended that the MoEST should take guidance and counselling seriously by among other things training teacher councillors and making the post an established one. It has also been recommended that the MoEST should make sure that head teachers, deputy head teachers, teachers, parents and even education officials are inducted in conflict management.
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Implementation of the school nutrition programme in selected high schools in KwaZulu-Natal Province : implications on learners' nutrition education
- Authors: Mafugu, Tafirenyika
- Date: 2018
- Subjects: School children -- Nutrition -- KwaZulu-Natal School children -- Food -- South Africa -- KwaZulu-Natal Child welfare -- South Africa -- KwaZulu-Natal
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9637 , vital:34812
- Description: The study sought to: examine training, monitoring and support provided to NSNP stakeholders; establish what informs the procurement and preparation of the food; determine its nutritional value; identify challenges encountered in the implementation of the school nutritrition programme; and evaluate the implications of the NSNP on learners’ nutritional education in Pinetown district in South Africa. Underpinned by the pragmatic research paradigm, the study followed a mixed methods research approach which utilised a convergent parallel research design. A random sample of 108 learners and purposive samples of 32 different stakeholders participated in the study. Descriptive and inferential statistics were used to analyse quantitative data, while qualitative data were categorised into themes which were presented in tables and text. The two forms of data were merged at the interpretation phase through triangulation of results. The study found that some of the key stakeholders of NSNP were not adequately supported and trained, and that monitoring was only done regularly by the teacher coordinators. District field officers lacked adequate expertise to train stakeholders. Food was prepared following a menu which was not updated in some schools, and food handlers in two schools could not understand quantities on the menu. The suppliers used the menu for procurement of food. The observed mean intakes per child per day for energy, protein, total fat, cholesterol, dietary fibre, vitamin K and sodium were significantly lower than the expected mean nutrient intakes, while the intakes of all other nutrients were not significantly different statistically, from the expected nutrient intakes. The intakes of all nutrients were below the minimum of 30 percent of RDA which was recommended by the Department of Basic Education. Fruits were rarely supplied. Nutritional education was not adequately taught across the curriculum and most respondents were not aware of basic nutritional principles. Training stakeholders and early payment of the suppliers could significantly improve learners’ benefit from the programme. The study’s proposed framework of implementation of the school nutrition programme recommends ways to improve the implementation process, including the incorporation of nutrition education into the Life Orientation curriculum to enhance good food choices that curb prevalent nutrient disorders among South Africans.
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Implementing values education as a vehicle to enhance moral regeneration among youths in secondary schools in Gokwe South District, Zimbabwe: towards a holistic framework
- Authors: Ndondo, Shepherd
- Date: 2018
- Subjects: Values -- Study and teaching -- Zimbabwe Moral education
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9423 , vital:34350
- Description: This study focused on the implementation of values education strategies in secondary schools in Gokwe South District in Zimbabwe. The study employed the interpretive paradigm and it used the qualitative approach and case study research design. Purposive sampling was used to select 34 participants who were rich informants and these included 1 District Schools Inspector, 3 School heads, 3 School counsellors, 3 Religious Studies teachers, 3 History teachers, 3 Arts and Culture teachers and 18 learners (6 from each school). Data were obtained through face to face interviews, focus groups and document analysis. The study revealed that most learners in these schools embodied ubuntu that shaped their behaviour. ln order to deal with elements of indiscipline, the schools adopted values education strategies which included Positive discipline, Guidance and Counselling, teaching of Religious Studies, Citizenship Education, teaching of Arts and Culture, and Parental Involvement which were implemented in the selected schools in different ways. Imparting values based knowledge to students is a commendable step, however, there were gaps that were noted in the implementation process. Some subjects like Citizenship Education existed on paper but not in practice in some schools, as students claimed ignorance of their existence. Although these subjects were supervised and supported by the District Schools Inspector (DSI) and the School heads, lack of funds and limited resources negatively affected their implementation. With regard to discipline procedures, it was noted that some teachers utilized corporal punishment, despite it being outlawed in the country, as stated in the Ministry of Education Sports and Culture Circular P.35 of 1999. It emerged that there was lack of qualified School counsellors, Arts and Culture teachers and inadequate Parental Involvement in values disciplines. It was also established that lack of financial resources constrained the implementation of values education strategies in that teachers could not go for staff development workshops. Notwithstanding the hindrances encountered, the study found that there were pockets of good practices in implementing values education. The study concluded that selected secondary schools used several strategies in values education which involved counselling misbehaving learners and involving parents when their children have behaviour problems. It was also revealed that members of the school community were playing different roles in the implementation process. The study recommended that there should be active participation of all members in positive disciplinary procedures so that values education strategies become effective.The study also recommended that teachers be trained in teaching values disciplines for effective implementation. Lastly, based on the findings of the study and literature, the researcher proposed an alternative model for implementing values education strategies that will hopefully contribute to the eradication of moral decadence among the youths.
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Incidence of porcine circovirus type 2 and porcine parvoviruses in swine herds of some communities in Eastern Cape, South Africa
- Authors: Afolabi, Kayode Olayinka
- Date: 2018
- Subjects: Swine -- Diseases Swine -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9691 , vital:34820
- Description: Porcine circovirus type 2 (PCV2) is one of the swine pathogens of global economic importance. Since its first detection in early 1990s as the main etiologic agent of porcine multisystemic wasting syndrome (PMWS) and many other porcine circovirus-associated diseases (PCVAD), the virus has been extensively studied and has been found to be present in virtually all the pig producing countries of the world. As a viral pathogen that brings about clinical diseases aided by co-infecting pathogens, the involvement of many other viral agents including porcine parvoviruses (PPVs) have caught the attention of stakeholders worldwide. However, no surveillance study of the viral pathogens has been carried out in South Africa as there are little or no information on their prevalence in the swine herds of the country. This present study therefore aimed at detection and molecular characterization of PCV2 and PPVs in swine herds of some selected communities in Eastern Cape Province, South Africa. A total of 375 field samples were collected from seven commercial and communal farms from three District Municipalities of Eastern Cape, South Africa between 2015 and 2016. Structured questionnaires were also administered to each farm at the time of sample collection to obtain some important information relating to health status and farm management practices in the sampled farms. With the aid of conventional PCR method, 339 samples were initially screened for the presence of PCV2; positive amplicons were sequenced and obtained partial genomes of the virus were preliminarily analyzed. In order to obtain the complete genomes of the virus, four overlapping primer pairs were used to amplify the full-genome of PCV2 from the initial positive samples; amplified genomes were sequenced using the Sanger methods, sequenced PCV2 genomes were assembled and characterized. Furthermore, the prevalences of some designated PPVs in the sampled farms were obtained using 110 samples randomly selected from the previously archived samples and screened with 6 different primer pairs specific for the detection of 7 PPVs. All the amplified parvoviruses’ genomes were sequenced; their sequenced partial genomes were subsequently base-culled and analysed. The data obtained revealed that 54/339 (15.93 percent) samples from the swine herds were positive for PCV2; whereas the degree of occurrence of the viral pathogen as observed at farm level ranges from approximately 5.6 to 60 percent. The majority 15/17 (88 percent) of the analyzed partial sequences were found clustering with other PCV2b strains in the phylogenetic analysis. More interestingly, two other sequences obtained were also found clustering within PCV2d genotype in the initial screening and analysis. Furthermore, 15 complete PCV2 genomes were successfully amplified, sequenced and assembled. NJ and ML phylogenetic analysis of the complete ORF2 gene and full genomes unanimously showed 11 of the assembled genomes belonging to genotype PCV2b. Another 3 of the characterized sequences formed clade with other reference mutant PCV2b and PCV2b subtype 1C (PCV2d) strains from different parts of the world. The last sequence however, clustered with other reference strains belonging to PCV2 intermediate clade 2 (PCV2-IM2) recently identified in a global PCV2 strains phylogenetic analysis. Other genetic analyses including multiple sequence alignment and p-distance analysis also confirmed the outcomes of the phylogenetic analyses of the complete capsid gene and fullgenomes of the virus. On the other hand, the findings of the molecular profiling for PPVs showed that all the screened parvoviruses were present in the study area, having prevalence of 29.1 percent (PPV1), 21.8 percent (PPV2), 5.5 percent (PPV3), 43.6 percent (PPV4), 21.8 percent (PBo-likeV) and 44.6 percent for PBoV1 and PBoV2. Double infection of the screened PPVs was observed to be very rampant among the pigs as high as 20/110 (18.2 percent) for PPV2/PPV4 and PPV4/PBoV; followed by 19/110 (17.3 percent) of the samples for PPV1/PPV4 and PPV1/PBoV. Three of the viruses were found simultaneously in 19 of the screened samples representing 17.3 percent, whereas 8 (7.3 percent) samples were positive for four of the viruses. Phylogenetic analyses of PPV1, PPV2 and PBoVs 1 and 2 were conducted with two major clades homologous for each of them. This is the first report of PCV2 in swine herds of the Province and the first detection of PCV2b, PCV2d and PCV2-IM2 strains in South African swine herds. It follows the first reported case of PCV2a in an outbreak of porcine multisystemic wasting syndrome (PMWS) in Gauteng Province, South Africa over two decades ago. Also, this is the first major epidemiologic study on PPVs in the country following the initial case study of 1975. These findings confirmed the presence of the allimportant viral pathogens among pigs and also give preliminary insights into the possibility of co-infections of the pathogens in the studied area. This could however result in a serious large scale outbreak of devastating disease(s) associated with the viral pathogens, thereby ultimately resulting in huge economic losses if no appropriate measures are taken to effectively curb their spread across the country.
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Influence of trans-border trading activities on senior secondary school students' academic performance in economics in Ogun State, Nigeria
- Authors: Titus, Adesegun Benedict
- Date: 2018
- Subjects: Smuggling -- Education (Secondary) Borderlands -- Nigeria
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9659 , vital:34814
- Description: The study investigated the influence of transborder trading activities on senior secondary school students’ academic performance in economics in Ogun state, Nigeria. A descriptive survey research design involving 320 students that comprised males and females were selected through stratified random sampling technique. Two self-developed instruments were used: student questionnaire on transborder trading activities (SQTTA) with a Cronbach alpha index of 0.7845; and the economics achievement test (EAT) with a co-efficient index of r= 0.814. The results of the data collected were collated, coded, analyzed and interpreted through the use of descriptive research statistics of frequency, mean, percentages, and standard deviation while Step-wise regression analysis was used to test the hypotheses raised in the study, and the inferential statistics t-test was used to test the significant differences between the independent and dependent variables. The results revealed that there is a positive significant influence of smuggling on students’ academic performance in economics concepts (t=4.123; df =307, p<0.05) and a negative significant influence of school location on students’ academic performance in economics concepts (t=0.952; df=307, p>0.05). The study revealed that the most prevalent transborder trading activities like smuggling of used tyres, small firearms and fairly used clothes had negative influence on students’ academic performance. Based on these findings, discussions were focused on the involvement of students in trans-border trading activities and the location of schools, amongst others, which has no significant influence on students’ academic performance. However, it was recommended that schools should not be located near border areas in future.
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Inmate incarceration and rehabilitation : a cross sectional study of rehabilitation programmes and facilities in correctional centres in North Western Nigeria
- Authors: Amali, Sadiq Ewaoda
- Date: 2018
- Subjects: Criminal -- Rehabilitation Prisoners -- Counseling of Prisoners -- Mental health services
- Language: English
- Type: Thesis , Doctoral , Social Sciences
- Identifier: http://hdl.handle.net/10353/9984 , vital:35215
- Description: The study was conducted in Kano Central and Goron-Dutse prisons, North Western, Nigeria to determine the effectiveness of these correctional centres with regards to inmate rehabilitation. Both quantitative and qualitative collection was conducted concurrently and incorporated in the explanation of the results. This was achieved as the study empirically examined the experiences of convicted inmates and correctional officials in both correctional centres with a sample that compromised of both convicted male and female inmates as well as male and female correctional officials. A total of 250 questionnaires were administered to convicted inmates in Kano central and Goron-Dutse prisons. A sample size of 250 was determined using the sample size calculator at a confidence level of 95 percent, confidence interval of +/-5.97 percent, and with a population of 3488. Data for this study was generated from 250 respondents. Out of 250 respondents, questionnaires were administered to 140 inmates in Kano Central Prison and 110 questionnaires were administered to inmates in Goron Dutse Prison. The number of respondents in Kano Central Prisons is higher than that of Goron-Dutse Prison due to disparity in population of inmates. Also, 207 questionnaires were administered to correctional officials in Kano Central and Goron-Dutse prisons. A sample size of 207 was determined using the sample size calculator at a confidence interval of +/-5, confidence level of 95 percent and population of 449 correctional officials. Out of the 207 respondents, 107 questionnaires were administered to correctional officials in Kano Central Prison and 100 to correctional officials in Goron-Dutse Prison. The number of respondents in Kano Central Prison is higher than that of Goron-Dutse prison due to disparity in population of correctional officials. The selections were done using purposive sampling procedures. Rank, involvement in rehabilitation programmes were also used as criteria for selection of correctional officials as respondents. Furthermore, 28 correctional officials were selected purposively across the two correctional centres were interviewed. Thus, 14 correctional officials each were selected in Kano Central and Goron Dutse prisons using purposive sampling method. Thus, a total of 28 in-depth interviews were conducted in the study area. This study empirically probed into the factors mitigating against the effective rehabilitation of inmates. Therefore, against this background, this study involved an appraisal of rehabilitation programmes and facilities which was followed by an evaluation of inmates’ opinion of the correctional centre social setting and overall practices. Thus, inmate’s perceptions of correctional officials’ attitudes towards them and also its implication for re-integration principle was thoroughly appraised. The findings of this study were analyzed with the assistance of computer applications such as SPSS and atlas.ti.6. Some findings from this study revealed that only 15.7 percent of inmates in Kano Central prisons were satisfied with rehabilitation programmes, 37.3 percent were satisfied in Goron-Dutse prison while the majority of the inmates (88 percent) in Goron-Dutse prison stated that the relationship with correctional officials was cordial compared to 53.5 percent of the inmates in Kano Central prison. Also, data revealed that 64.2 percent of the inmates in Goron-Dutse Prison stated that medical attention was good and very good. The results also reveals that (58.9 percent) correctional officials stated that their relationship with inmates was very cordial compared to those of Goron-Dutse Prison (41.1 percent).Pearson Chi-square statistics showed that there was no statistical difference in correctional officials’ perceptions of the relationship with inmates between the two correctional centres (p.value>0.05). This study recommends that it is imperative for the Nigerian government to make more efforts with the provision of adequate rehabilitation programmes and facilities in the two correctional centres and correctional centres across the country as an exploration of existing literature reveals that most correctional centres in Nigeria lacked basic facilities for inmate rehabilitation as inmates were idle during incarceration.
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Institutions, Production and Marketing of maize in Zimbabwe. Case of Marondera District of Mashonaland East Province
- Authors: Mafuse, Never
- Date: 2018
- Subjects: Food security Food supply
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/15687 , vital:40506
- Description: Food security situation in Zimbabwe is deteriorating despite the efforts made by the government for embarking on agrarian reforms in terms of redressing colonial imbalances and taking on the major trading investment risks. The government assured the resettled farmers that if they invest in maize production, they would not be stranded by lack of marketing services as the markets are liberalized. However, this market liberalization policy occurring in maize sector has resulted in A1 resettled farmers becoming more vulnerable to traders preying on their weaknesses as the policy is not living up to expectations and is failing to bring dramatic increases in agricultural growth. This may mean that sending children to school is a nightmare for those who depend on farming for educating their children, inadequate food in the home, unpaid loans and subsequent impoverishment. The resettled A1farmers will remain trapped in the poverty cycle as long as institutions are not corrected. The general aim of the study was to evaluate institutional factors influencing maize production and marketing by A1 resettled farmers of Marondera district in Mashonaland East province of Zimbabwe. Using a sample of 343 farmers randomly selected in Marondera District, different econometric models like Data envelopment Analysis, Cob Douglas, Binary logistic, and Tobit as well as descriptive statistics were used to analyse the data. Institutional variables were captured in two ways: as a dummy showing whether farmers have access to institutional variables and as a continuous variable indicating importance of institutions on maize production and marketing. The study found out that, most of the A1 farmers are old, with a mean age of 47 years and a maximum of 55 years of farming experience. It is also dominated by male farmers who are literate. Results also showed that most of A1 farmers from the sample are married and very few separated. These farmers sell most their maize and keep little for consumption though they are still using convectional farming methods. Most of the farmers from the sample generate their incomes from farming activities only and they have good access to market and production information as well as extension xvi messages through training .They however have poor access to financial credit and weak social capital as well as low contract farming. Results also indicated that A1 farmers pursue the formal supply chains than informal supply chains. It is noted that, A1 farmers participate in a number of markets that include agricultural inputs markets seed, fertilizers, chemicals.; credit markets which includes banks as well as labour markets which can in the form of (maricho). In terms production and marketing efficiency, the study found out that A1 farmers are technically, allocatively and economically inefficient. The maximum efficient score is 1 while the minimum score is 0.01 for both production and marketing stage. The mean scores for production stage are 0.195, 0.504 and 0.072 for technical, allocative and economic efficient respectively. The mean scores for marketing are 0.103, 0.688, and 0.068 for technical, allocative and economic efficiency respectively. Farmers are performing better at production stage than at marketing technically while there is better allocative and economic efficiency at marketing stage. Results for determinants of technical, allocative and economic efficiency at production stage showed that, cattle ownership, farming experience, access to financial credit and (member of farmer organisation) which was used as a proxy indicator for social capital ,access to information, contract farming, distance to input market ,area planted to maize and quantity of seed used influences marketing efficiency of A1 maize farmers in Marondera District. Access to credit, Access to market, distance to market, road infrastructure, farming experience and access to information influences technical, allocative and economic efficiency at marketing stage. Cooperative membership, road infrastructure, contractual farming arrangements, and access to financial credit and transport cost to market influence choice of marketing channel respectively. Finally results from the non linear cob Douglas reveals that, maize production is significantly influenced by contract with value chain actors, access to market xvii information, access to financial credit, total topdressing used , total basal fertilizer used, total herbicides used, and total area put under maize production. The results showed that, future of A1 resettled farmers depends on correcting the institutions which are of paramount importance for maize production and marketing. The study therefore recommended the government to improve institutional environment that has direct link with institutional innovations necessary for sustainable maize production and marketing. This can be done through correcting inefficiencies and ineffective institutions by creating and maintaining both environment and arrangement that will transform maize production and marketing systems to operate efficiently. The study presents policy options to address both production and marketing of maize arguing that new direction of production and marketing of maize depends on correcting dysfunctional institutions. Policy options include increasing A1 farmers access to financial credit by removing the stringent collateral requirements which are not attainable by most A1 farmers as their asset endowment is limited to non capital. Addressing imperfections in the input markets by improving the supply of chemical fertilisers and seed at affordable prices as this influences total area put under maize production. The other policy is for private companies and NGOs to offer contract farming to A1 maize farmers as this will help them to increase total area put under maize production, access to market, access to credit, and access to information and reduces long distances to purchase inputs. Introducing focused training to motivate resettled A1 farmers on formation farmer organisations as this assists in social capital which is an important asset in maize production and marketing.Improving road infrastructure by creating a fund that would be used to maintain the road rather waiting for DDF only.
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Laccase production by selected bacteria species isolated from some aquatic and terrestrial milieu of the Eastern Cape : applications in wastewater treatment
- Authors: Unuofin, John Onolame
- Date: 2018
- Subjects: Laccase Sewage -- Purification -- Biological treatment Water -- Purification
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9626 , vital:34810
- Description: Aromatic pollutants are a diverse group of chemicals which are continuously produced from industrialization, urbanization and sophistication in technological advancement. Pristine water source polluted by these chemicls makes the water unsafe for human consumption, and as well disrupts the trophic structure of the aquatic milieu. Physico-chemical treatment techniques employed so far have been accompanied by major drawbacks which have overriden the relative successes recorded, hence, greener, simpler and more efficient methods of pollutant transformation is imperative. The prospect of enzymatic treatment of pollutants has gradually been receiving growing attention in contemporary times due to the their environmental friendliness and production economic feasiblity. Laccase, a multicopper oxidase has heightened its appeal towards environmental and biotechnological applications due to its broad substrate specificity and its requirement of atmospheric molecular oxygen as a cosubstrate and the discharge of water as the byproduct. Hence, this present study was designed to evaluate the biotechnological potentials of laccases produced by some bacteria species from some aquatic biomes of the Eastern Cape Province, South Africa. The laccase-producing bacteria were isolated from selected environmental samples by selective enrichment using selective aromatic compounds as sole carbon source and subsequently, laccase-screening phenolic substrates. The laccase-producing bacteria were identified by molecular techniques as proteobacteria belonging to the following genera: Achromobacter, Bordetella, Citrobacter, Pseudomonas and Stenotrophomonas. Optimisation of laccase production in a submerged fermentation was by traditional and statistical methods, where four isolates (Hb9c; Achromobacter xylosoxidans HWN16, Hb16c; Bordetella bronchisepta HSO16, Berl11b2; Stenotrophomonas maltophilia BIJ16, Ie1c; Citrobacter freundii LLJ16) were evaluated for the fermentative production of laccase from lignocellulosic agroindustrial residues. Predictions from statistical optimisation showed that weakly acidic conditions (pH 5) and low agitation speed (100 rpm) were required for maximum laccase production from mandarin peelings (0.5 g/200 mL) and NaNO3 (0.25 g/200 mL) in Hb9c, maize stover (0.50 g/200 mL) and NaNO3 (0.050 g/200mL) in Berl11b2 while a lower agitation speed (50 rpm) was required for maximum laccase output from 2.0 g/200 mL maize stover and 0.050 g/200 mL KNO3 in Ie1c. However, 2.50 g/200 mL wheat bran, 0.050 g/200 mL yeast extract and 50 rpm agitiation under acidic conditions (pH3) yielded maximum laccase titres in Hb16c. Further characterisation of Hb9c and Ie1c laccase secretions portrayed their polyextremotolerant capacities. They were active at a broad range of tempertaure (0-90 degreesC); with optima at 70°C (Hb9c) and 60°C (Ie1c), pH (3-11); with optima at pH 6 (Ie1c) and pH 8 (Hb9c), respectively, and were equally thermo- and pH-stable. Their activities were either improved or left unabated by high concentrations of cations, detergents, and chloride. In addition, catalytic activities of Hb9c and Ie1c laccase secretions increased when they were preincubated with 2 – 20 percent of fluoride, a potent inhibitor. Consequently, a molecular perspective depicted the isolates to have multiple homologous laccase encoding genes. The enzymes were successfully immobilised on solid supports comprising gelatin and Na-alginate with a recovery of cca. 85 percent residual activity after 8 cycles of oprertional stability experiments. The immobilised laccases were remarkable in the decolourisation of synthetic dyes, albeit, free forms also elicited satisfactory performances. Ultimately, the application of free laccases in denim bleaching, individually or with a blend of a mediator, ABTS, showed that denim colours could be bleached without the need for chemical bleaching agents. The results obtained suggest the bacteria laccases produced from lignocellulosic wastes may serve as potent degraders of phenolic pollutants in water and, may also contribute to the bioeconomy and promote greener techniques for industrial applications.
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Livelihood and unemployment transitions : drivers and effects on welfare in Nigeria
- Authors: Fashogbon, Ayodele Emmanuel
- Date: 2018
- Subjects: Social service -- Nigeria Social problems -- Nigeria Nigeria -- Social conditions
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9176 , vital:34302
- Description: Hunger, unemployment and social crisis are increasing in Nigeria. Statistics supports it that most of the able-bodied youth, both male and female, are not in employment, school or training in Nigeria while poverty rate is as high as a decade ago. A number of research efforts have looked at the micro and macroeconomic paths of the problem with less attention on dynamism of unemployment vis-a-vis the labour market transition, hence this study. This study investigates dynamism of labour market by assessing pattern and transition in labour market and out of labour, as well as determining the effect size of households head’s unemployment on household welfare. To achieve this objective, the General Household Survey (GHS) panel data for 2010/211 and 2012/2013 for Nigeria was used coupled with panel regression analyses to identify determinants of transitions from unemployment to productive sectors, and determinants of transition from productive sectors to unemployment, as well as effect of unemployment on household welfare while controlling for potential endogeneity in unemployment. Across the productive sectors and between 2010 and 2013, the descriptive results of transition show that workforce in the services sector (68 percent) are the most persistent, followed by agriculture (59 percent) and least is mining and manufacturing (44 percent). Transition from nonemployment occurred the most to services sector (22 percent), followed by out-of-labour force (18 percent), agriculture (15 percent) and least to mining and manufacturing (5 percent). Further, the results show that there are both locations and gender differences in the extent of transitions in the labour market. The econometric analyses reveal that job search characteristics, age, educational levels, gender, family ties, locations and time significantly determine transition from unemployment to productive sectors (agriculture or non-agriculture). Likewise, job characteristics, demographic variables, social network, location and time significantly determine switch from one productive sector to another or to unemployment. Moreover, it explicitly reveals as well from the analysis that household head month of unemployment reduces household total consumption and food consumption by 6.4 percent with gender and sectorial differences. The study recommends a combined and swift intervention on three sides: one, there is a need to stimulate education either through scholarship, or adult education from both public and private sectors; two, need to create jobs for youth to reduce potential social and economic crisis; and lastly there is a need to provide social support either in terms of public workfare, skills for jobs and unemployment benefits.
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Macro-prudential banking regulation, interest rate spread and the conduct of monetary policy in South Africa
- Authors: Shayanewako,Varaidzo Batsirai
- Date: 2018
- Subjects: Monetary policy Economic stabilization
- Language: English
- Type: Thesis , Doctoral , D.Com
- Identifier: http://hdl.handle.net/10353/14093 , vital:39843
- Description: The joint implementation of macro-prudential regulatory and monetary policies is necessary for modern banking systems not only to achieve optimal interest rate spread but to cushion the economy against the catastrophic effects of systemic risk. Therefore, the understanding of the interconnection between macroprudential regulation, interest rate spread and monetary policy, supported with empirical evidence, enables economies to build health and sound financial systems and achieve desirable growth rates. Thus, this study utilises the Vector Error Correction (VEC) mechanism to empirically investigate the interconnection between macro-prudential regulation, interest rate spread and monetary policy in South Africa. Quarterly time series data for the period from 1994 to 2016 was employed with the New Keynesian Dynamic Stochastic General Equilibrium (NKDSGE) model as the framework for analysis. The findings of this study suggest that a negative relationship exists between interest rate spread, macro-prudential regulation and monetary policy in South Africa. Moreover, the systems equation provided evidence that a short run causality running from macroprudential regulation to monetary policy is prevalent in South Africa. The empirical model of the study was found to be desirable as evidence of no serial correlation, no ARCH effect and non-normality in residuals was detected. Evidence from this study further suggest that interest rate spread has a dampening effect on monetary policy, but in the long-run this effect seems reversible in South Africa. As a result, this study recommends that caution should be taken on the appropriate selection of measures of macro-prudential regulation and its tool-kit as it can be used to disguise the symptoms of a lax monetary policy. This implies that the South African Reserve Bank (SARB) should sternly supervise and regulate the extension of credit by commercial banks in line with its inflation targeting monetary policy rule in order to achieve financial stability and ensure optimal interest rate spread that can stimulate the economy to growth.
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Molecular characterization of streptococcus agalactiae isolated from pregnant women in the Eastern Cape, South Africa and Windhoek, Namibia and antibacterial activities of some medicinal plant extracts on the isolates
- Authors: Mukesi, Munyaradzi
- Date: 2018
- Subjects: Streptococcus Medicinal plants Pregnant women
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/13034 , vital:39437
- Description: Streptococcus agalactiae (S. agalactiae) also known as group B Streptococcus (GBS) is one of the leading causes of bacterial morbidity and mortality among neonates worldwide. It is the cause of invasive Early Onset Disease (EOD), which occurs in the first 7 days of life and characterised by sepsis, pneumonia and meningitis and Late Onset Disease (LOD) occurring between 7 and 89 days of life. Late onset disease is characterised by meningitis and long term neurological sequelae such as cerebral palsy, hearing impairment and cognitive challenges. S. agalactiae does not only infect neonates, it also infects the elderly, immunocompromised individuals and pregnant and non-pregnant women, causing invasive disease. In the world, 10-40 percent of healthy women are rectally or vaginally colonised with GBS and they face the risk of passing it to their babies during the process of childbirth. During parturition, a GBS colonized pregnant woman transfers the bacterium to her new-born as the baby passes through the ruptured membrane, thus infecting the child. However, GBS has been reported to be transferred even without rupture of membranes. Once it infects the membranes, it is transferred into the amniotic fluid and subsequently infects the baby. It can be aspirated into the lungs causing pneumonia or it can infect the blood stream and disseminated round the body causing septicaemia, meningitis and other infections. Once in the neonate’s body, the bacteria is able to evade the immune system as the host immune system is not yet fully developed. Bacterial evasion of the immune system is enhanced by its various virulence factors which are deployed to help it escape the immune system. These include the polysaccharide capsule, haemolysin and the release of complement inactivating factors such C5a peptidase. The World Health Organisation (WHO) (2010) recommends universal screening of pregnant women to identify those colonised and who are at risk of passing the bacterium to their babies during birth. WHO also recommends identification of at risk women and providing Intrapartum Antibiotic Prophylaxis (IAP) using penicillin. However, problems arise in penicillin allergic women and while alternatives for IAP include erythromycin and clindamycin, there is increasing resistance to these drugs thereby limiting therapeutic options. Antimicrobial susceptibility testing is also not always possible in most resource constrained countries due to poor infrastructure, limited access to health care and the logistical problems in implementing the WHO guidelines. Alternative therapeutic options to GBS infection include developing new and potent antibiotics, development of a vaccine, use of medicinal plants and the use of bacteriophage therapy. While these look like better alternatives there is massive scientific work to be carried out to ensure proper characterisation and efficiency of such alternatives. This process should be followed by in vitro diagnostic testing, experiments with animal models and clinical trials. The problems encountered during vaccine development to curtail GBS infection are compounded by the multiplicity of S. agalactiae capsular types which vary in different geographic locations. Medicinal plants are a cheap and convenient option since they are widely used in communities but the phytochemical components of the plants have to be identified and subjected to in vitro testing to evaluate their therapeutic efficacy as antimicrobial agents. This study therefore sought to isolate GBS from pregnant women between 35 and 37 weeks gestation in Windhoek (Namibia) and the Eastern Cape (South Africa), to determine the prevalence of GBS colonisation in the vagina and rectum of the pregnant women, characterise the isolates by molecular techniques, determine the antimicrobial resistance profiles and genes of the isolates and explore the efficacies of medicinal plant extracts as possible candidates for therapeutic options.
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Molecular epidemiology of vibrio pathogens in selected surface waters and treated final effluents of wastewater treatment plants in Chris Hani District Municipality in the Eastern Cape Province, South Africa
- Authors: Ayodeji, Onsula Charles
- Date: 2018
- Subjects: Sewage disposal plants Sewage -- Purification Water -- Purification -- South Africa -- Eastern Cape
- Language: English
- Type: Thesis , Doctoral , Microbiology
- Identifier: http://hdl.handle.net/10353/10464 , vital:35478
- Description: Access to clean and safe water is essential for the survival of human beings. Nevertheless pollution from wastewater treatment plants (WWTPs) effluents often impacts the microbiological qualities of surface waters. Availability of freshwater resources is indispensable for preventing waterborne diseases. The current study evaluated the physicochemical properties and abundance of Vibrio species in selected rivers and WWTPs in the Eastern Cape Province of South Africa, over a one year sampling regime (December, 2016 to November, 2017). Water samples were collected monthly at designated locations along the banks of two rivers, treated effluents from 500 m upstream and downstream discharge points of two WWTPs and examined for physicochemical qualities, prevalence of Vibrio pathogens and their antibiogram profiles using both cultural and molecular techniques. The findings reveal the qualities of Tsomo and Great Fish river qualities with respect to electrical conductivity (EC) (137.75 – 377.69 mg/l), total suspended solids (TSS) (52.00 – 725.19 mg/l) and temperature (12.7 – 23 oC) and the treated effluents of WW-AD and WW-CR WWTPs with respect to EC (525.73 – 1071.89 mg/l), free chlorine (0.00 mg/l – 0.68 mg/l), temperature (12.4 – 28.8 oC), TSS (14.67 – 276.44 mg/l) exceeds the permissible limits set for effluent discharged to freshwater by South Africa guidelines. Other physicochemical qualities such as turbidity (63.11 – 797.17 NTU), BOD (3.30 – 5.26 mg/l) and TDS (68.88 – 148.14 mg/l) for Tsomo and Great Fish river and turbidity (20.33 – 310 NTU), biological oxygen demand (BOD) (1.28 – 4.96 mg/l), and total dissolve solid (TDS) (262.89 – 534.89 mg/l) for WWTPs WW-AD and WW-CR did not comply with WHO and EU standards as no regulation is set for them in the South African guidelines for domestic water usage. Statistical analysis revealed that pH, electrical conductivities, dissolved oxygen and total dissolved solid were significantly different whereas temperature did not differ significantly with respect to the four seasons (P < 0.05). The Vibrio densities for Great Fish river ranged between 0 and 3.29 log10 CFU/ml with the highest obtained in the spring. The Tsomo River Vibrio densities varied between 0 to 3.56 log10 CFU/ml and the maximum densities recorded during summer. The presumptive Vibrio densities in WW-AD and WW-CR WWTPs ranged from 0 to 3.67 log10 CFU/ml and 0 to 4.42 log10 CFU/ml with autumn and spring having the highest loads respectively. Molecular identification of the presumptive Vibrio species revealed 424 positive for the Vibrio genus. Of these, 21.69 percent, 11.79 percent, 8.25 percent and 2.12 percent were confirmed as V. cholerae, V. mimicus, V. parahaemolyticus and V. fluvialis respectively. The presence of potentially Vibrio pathogens in the rivers and treated effluents suggests potential public health threat to the communities relying on receiving watersheds where the effluents are discharged. Results of antibiotic sensitivity testing revealed high sensitivities against Ofloxacin (85.54 percent), Cefuroxime (81.93 percent), and Ciprofloxacin (74.70 percent), whereas resistance against other antibiotics follow this order: Imipenem (42.17 percent), Amoxicillin-Clavulanic Acid (54.17 percent), Ampicillin (63.54 percent), Nitrofurantoin (71.79 percent) and Polymyxin B (97.44 percent). Surprisingly, the resistance of Vibrio species against the known effective Carbapenems was relatively high (Meropenem (38.54 percent) and Imipenem (58.88 percent). Multiple antibiotic resistance phenotypes (MARP) of the isolates were resistant to two or more antibiotics whereas the calculated multiple antibiotic resistance index (MARI) ranged from 0.2 to 0.7. The observed high multiple antibiotics index suggest the recovered Vibrio pathogens are of high antimicrobial usage origin. Increase in antimicrobial resistance profiles towards conventionally used antibiotics as indicated in this study calls for adequate sanitation facilities and proper surveillance programs towards monitoring of antimicrobial resistance determinants in wastewater treatment effluents and receiving watersheds. This will in turn enhance early detection of resistant strains of public health importance, and supports the prompt notification and investigation of outbreaks. It further advocates the need for constant monitoring programme by the relevant regulatory agencies to ensure total compliance of the wastewater treatment facilities to the stipulated standards.
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Molecular studies on cholera and non-cholera causing vibrio pathogens isolated from some water resources and aquatic animals in Eastern Cape Province, South Africa
- Authors: Abioye, Oluwatayo Emmanuel
- Date: 2018
- Subjects: Vibrio cholerae -- Pathogens Vibrio cholerae
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9154 , vital:34283
- Description: The global socioeconomic and disease burdens of cholera; a disease caused by Vibrio cholerae have been ongoing since it was first reported in India in 1563. Unfortunately, emerging non-cholera causing Vibrio pathogens have been contributing to the malady of Vibrio genus globally in the recent years. The history of cholera outbreaks in South Africa have been well documented but information regarding other non-cholera Vibrio pathogens, is deficient in the literature. This study evaluated the statuses of aquatic animals including crustaceans, molluscs, and fish as important reservoirs of six key pathogenic Vibrio spp. in some important water resources and fish markets in the Eastern Cape, South Africa, between December 2016 and November 2017. Physiochemical parameters that are vital for water quality assessment were determined for all the water sampling points using standard methods. The parameters include pH, electrical conductivity (EC), total dissolved solids (TDS), salinity, temperature, total dissolved solids, turbidity and biological oxygen demand (BOD5). Vibrio spp. densities in water and aquatic animal samples were determined using membrane filtration and Most Probable NumberPolymerase chain reaction (MPN-PCR) methods respectively. Presumptive Vibrio spp. were recovered from the samples by direct plating of water samples and aliquots of aquatic animal homogenates on thiosulfate-citrate-bile salts-sucrose (TCBS) agar. Where necessary, samples were enriched using alkaline peptone water (APW) for optimum isolation of the targeted Vibrio spp. Presumptive isolates were identified and delineated into the six targeted pathogenic Vibrio spp. using PCR method. The antibiogram fingerprint of selected Vibrio spp. against a panel 18 panels of antibacterial agents were also carried out. Multiple antibiotic resistance phenotypes (MARPs) per set of isolates from water sampling sites and aquatic animal types were determined. Finally, multiple antibiotic resistance indices (MARI) for isolates recovered from the samples were determined. All experiments were done in replicate and data compared using one-way analysis of variance and one-tail t-test as appropriate. Correlation and regression analysis were also carried out as appropriate. Uncontrolled agricultural, industrial and domestic wastewater influxes, as well as run-off intrusions into the water resources investigated, were observed throughout the sampling season. The physicochemical qualities of the water resources varied with seasons. While pH observed for all the water sampling sites complied with South Africa and international standards, most sampling sites did not comply with set standards for one or more of the remaining physicochemical parameters. The parameters that frequently exhibited significant correlation and regression with Vibrio spp. densities were TDS, TSS, turbidity and temperature. The densities of Vibrio spp. in the samples studied varied with season and the highest density per sample types were observed in the summer. The prevalence of Vibrio spp. in freshwater, brackish water and aquatic animal samples were 79 percent, 78 percent and 86 percent respectively. The respective prevalence of V. cholerae, V. mimicus, V. fluvialis, V.alginolyticus, V. vulnificus and V. parahaemolyticus in freshwater samples (18 percent, 3 percent, ~1 percent, ~1 percent, <1 percent, < percent), brackish water(12 percent, 3 percent, 28 percent,~1 percent, ~1 percent, 9 percent) and aquatic animals (9 percent, 1 percent, 17 percent, 1 percent, 1 percent, 17 percent) were observed. All isolates from all the sample types showed very high antibiotic resistance against ampicillin and polymyxin B. Furthermore, MARPs were observed among isolates from the three sample types. Multiple antibiotic resistance indices (MARI) above 0.2 was observed at one site on Kowie River, three on Kubusi River and one on Buffalo River. The findings of this study suggest that most South Africa water-bodies especially freshwater resources are not well protected. This need to be addressed in a country like South Africa where availability of the freshwater resource for human activities is a critical issue. Base on the prevalence of pathogenic Vibrio spp. especially MARPs and sites that exhibited above 0.2 threshold for MARI, environmental base Vibrio species monitoring programs are recommended.
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Non-farm enterprises and rural development in South Africa : a case of the Eastern Cape
- Authors: Dapira, Clarah
- Date: 2018
- Subjects: Rural development--South Africa--Eastern Cape--Case studies Rural development--South Africa South Africa--Economic conditions
- Language: English
- Type: Thesis , Doctoral , Development Studies
- Identifier: http://hdl.handle.net/10353/15463 , vital:40410
- Description: There is growing recognition that the limited success in rural development policies in many developing countries, including South Africa, is mainly a result of the failure to conceptualize such interventions beyond agriculture and incorporate non-farm enterprises into the mix. Non-farm enterprises are increasingly viewed as having the potential to become one of the drivers of rural development. However, it is an area that remains poorly documented and dimly understood as it has received limited scholarly attention in recent years. The study was carried out in the rural areas of Port St John’s Local Municipality in the Eastern Cape Province of South Africa. The study was premised on the assumption that non-farm enterprises have the potential to become one of the drivers of rural development in terms of employment creation, income generation and diversification of the rural economy. The thesis demonstrates that the hope that non-farm enterprises can add value to the rural economy in terms of creating the much needed employment opportunities is still a goal to be realised. Nevertheless, the income generated by these enterprises is contributing immensely to household welfare, especially improving accessibility to food by poor households. The study recommends the implementation of tailor made capacity building and training programmes aimed at enhancing the skills of rural artisans. This is an area that requires state-mediated intervention to augment the rural economy in order to redress the uneven development of the past.
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Parental involvement and grade 8 learners' academic achievement in mathematics : a study of selected schools in East London, South Africa
- Authors: Eesuola, Omobola Foluke
- Date: 2018
- Subjects: Education -- Parent participation -- South Africa
- Language: English
- Type: Thesis , Doctoral , Education
- Identifier: http://hdl.handle.net/10353/10497 , vital:35497
- Description: This investigation springs from the realization that academic achievement is influenced by different environmental factors. The influence of parental involvement on learners’ academic achievement has been recognized globally by experts in the education industry. As integral as parental involvement is, education industry is yet to come to terms on the best type of parental involvement needed for the teaching and learning of Mathematics in high schools especially at the transition phase. The aim of this study was to establish the relationship between parental involvement and grade 8 learners’ academic achievement in Mathematics. Quantitative research method was used for data collection. The data was collected with the use of parental involvement questionnaire for learners (PIQL) and learners Mathematics academic achievement scores. The research was conducted in six schools (public and private) within the East London Education District. The total sample size was 460 Grade 8 learners who were randomly selected across the board. The outcomes of the investigation revealed that parental involvement enhances the academic achievement of grade 8 learners irrespective of a definition of it or the measure of achievement. Furthermore, the results of this findings indicate that good parenting styles, parental support and parental educational background (r = 0.54; P < 0.05), (r =0.20; P< 0.05), (r = 0.68; P < 0.05) respectively are prerequisite for learners’ academic achievement in mathematics, showing that the variables are significantly related to learners academic achievement in mathematics; while parental involvement in the area of communication and family structure were very weak (r = 0.05; P > 0.05), (R=0.09; R2=.005; P < 0.05). This study therefore, recommended that parental involvement should be beefed up especially in areas of communication and family structure, by both the parents and teachers in order to enhance learners’ academic achievement in Mathematics.
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Parents' experiences with involvement in the education development of children under six years in the Bubi District of Zimbabwe
- Authors: Mhlanga, Sibonginkosi
- Date: 2018
- Subjects: Education -- Parent participation -- Zimbabwe Education, Elementary -- Zimbabwe
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9467 , vital:34354
- Description: This study on parental involvement in Early Childhood Development in the Bubi district of Zimbabwe investigates parents’ experiences with involvement in the education development of children under six years. Early Childhood Development in Zimbabwe is a community based programme, hence the interest on parents in their involvement in the education and development. To investigate this phenomenon a thorough background of the Bronfenbrenner’s ecological systems theory was employed. The theory is based on the principles of interconnectedness within settings and the linkages between settings that affect individual development. The study focused on the immediate, being the microsystems. The interpretive paradigm and the qualitative approach were employed to explore the parents’ experiences with involvement in the education development of children under six years. Purposive sampling was used to select a small sample of two Heads of schools, four Early Childhood Development teachers and sixteen parents; these were from two schools in the Bubi district of Matabeleland, North Province of Zimbabwe. Obtained results reveal that all the stakeholders involved in the study seem to have limited knowledge of parental involvement. It also emerged that the involvement in the district is biased towards the physical needs of the school only. The results also revealed that there are so many factors that contribute to the non-involvement of parents in their children’s education and development such as poverty, lack of knowledge, culture and attitude, just to mention a few. In view of the findings the study recommends that the Government should provide statutory instruments that clearly state the role of the parents, especially because of the fact that, currently, the programme in the country is community based. The colleges should also empower student teachers during their training on parental involvement.
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Perception of climate change impacts, adaptation responses and national response policy outreach by smallholder farmers in Amathole District, South Africa
- Authors: Popoola, Oluwaseun Oluwabunmi
- Date: 2018
- Subjects: Climatic changes -- South Africa -- Eastern Cape Global environmental change Climate change mitigation
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9000 , vital:34181
- Description: The climate is changing, with imminent threats. Projections for increased inconsistencies in climatic elements such as rainfall and temperature have continued to raise concerns particularly amongst farmers. The majority of South African smallholder and resource-poor farmers rely heavily on rain-fed agriculture, making them vulnerable to the vagaries of climate change risks. As sustainability is crucial to the continuous survival of this population, this study assessed the farmers’ perceptions of climate change impacts on agricultural production activities as well as their adaptation responses. The South African national climate change response policy was developed and approved in October 2011 in order to institute a responsive intervention system for the moderation of climate change impacts on South Africa’s citizens. Amongst its priorities is building capacity and resilience in the country’s agricultural sector, with the public agricultural extension system as a principal component for climate change sensitisation, education and capacity-building. With current global climate change conditions, the urgency to provide agricultural knowledge on adaptation has risen. Smallholder farmers, in particular, are challenged in this regard, and face numerous restraining factors. Therefore, this study investigated several key issues related to climate change sensitization activities and response. A multistage sampling procedure was used in the selection of the study sample (n = 301) residing in the rural settlements of Mbahashe Local Municipality, in Amathole District Municipality, Eastern Cape Province, South Africa. A cross-sectional household survey was carried out in eighteen villages surrounding the three major towns in the municipality – Idutywa, Elliotdale and Willowvale. Data was collected using semi-structured questionnaires. Descriptive and inferential statistical tools were used for data analysis. Findings revealed a perceived increase in temperature levels and a drastic decline in rainfall; perceived harsh and aggressive climatic conditions, with attendant problems of drought. There is a perceived increased difficulty in production activities as a result of water scarcity. Poor soil conditions, pest infestations and disease infections, poor vegetation and limited grazing, decreased livestock growth rate, reduced livestock weight, milk production and reproduction rates, reduction in quantity of egg production, egg quality and sizes, are amongst many other perceived challenges. There is a growing threat of unsustainable agricultural production, which may in due course increase poverty levels among the smallholder farmers. Adaptation responses were extremely limited. Findings also revealed that there is an extremely low awareness of the national climate change response policy, and a dearth of sensitisation campaigns and capacity-building training of smallholder farmers in the study area. There is also a significant lack of access to agricultural extension services that might disseminate information and build capacity for an appropriate climate change response. Analysis also revealed that public extension services play a minute role in rural farmers’ climate change knowledge; they get their information elsewhere. The most critical constraint to climate change coping and adaptation in the study area was lack of access to agricultural extension services. The study recommends government intervention in the form of appropriate, functional extension services, particularly for carrying out climate change coping and adaptation education and support. It also strongly endorses the tower gardening concept, practised in a number of countries, including parts of South Africa to facilitate an exigent intervention project to curb declining crop production and sustain the livelihoods of farmers, before major intervention schemes are set up by various governing bodies. There is an immense need to buffer the adaptation capacities of livestock smallholder farmers in rural communities through the implementation of adaptation promotional schemes for rural livestock sustainability. Productivity and efficient commercialization of both indigenous and hybrid poultry production should be beefed up by encouraging poultry breeding programs and breed improvement activities, subsidizing commercial feeds to encourage supplementary feeding, provision of better infrastructure for improved housing and the facilitation of health care systems like vaccination programs. This study also recommends that efforts to create awareness, knowledge and skills in relation to climate change be intensified through an enhanced use of all media. In addition, agricultural extension departments functioning at the local level should be financially and technically capacitated to allow for enhanced performance by their field officers.
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Play as an indicator of public opinion in online political commentary : a content analysis of online news forums leading up to the 2014 South African General Elections
- Authors: Moyo, Lungisani
- Date: 2018
- Subjects: Online journalism Content analysis (Communication)
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/10678 , vital:35667
- Description: This study seeks to look at play as an indicator of public opinion in online political commentary of online news forums leading to the 2014 South African general elections. A qualitative content analysis was used to analyse viewers’s comments about 2014 South African general elections posted online. The concepts of critical discourse analysis, frame analysis play theory and network analysis were applied to extend and inform the study. A corpus of all commentary appended to 2014 South African general election news reports published online by Media24, Times Media Group, Mail &Guardian, Independent Newspapers, Caxton CTP, and TNA Media were selected. The study employed a purposive sampling technique and 1000 comments were extracted. The sample began four weeks before the election and ended two weeks after the event. NVIVO 11 was utilized to code these readers’ comments into their respective categories. The core findings of this thesis reflect that online readers do not just engage in play but are more interactive and participative on these online public forums and their political discourse echo political affiliations with different political parties, bearing in mind that South Africa has 13 political parties that participated and are represented in parliament. In addition, the findings revealed that, play cannot be parted with and remains inseparable with "what is real"; instead, play renews the real world by giving it sense and meaning. Play does not "re-present" nor falsify certainty but it enunciates certainty. The findings also revealed that most participants identify themselves with the ANC as the ruling party, the DA as the main opposition, the EFF as the most vocal party and then other parties. The findings further revealed that participants have different perspectives on different economic and socio-political matters such as, entertainment, slate politics, and political affiliation, cadre deployment, political bias, economic meltdown, diaspora, and western influence, abuse of power by those in high places, land reform programme, political power struggles, leadership change and corruption.
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Pre-service education students’ application of visualisation strategies to solve mathematical word-problems
- Authors: Shaw , Peter
- Date: 2018
- Subjects: Mathematics -- Study and teaching
- Language: English
- Type: Thesis , Doctoral , PhD (Education)
- Identifier: http://hdl.handle.net/10353/12941 , vital:39406
- Description: This classroom-based action research dissertation examined visualisation strategies used by pre-service Intermediate Phase PGCE education students to solve mathematical word-problems. The setting was an Eastern Cape university. Previous literature indicated a positive correlation between the use of visual scaffolds and success in solving word problems. However, a gap was found insofar as little research had been published on the application of visualisation to word-problems by student teachers in South Africa. This thesis advances our understanding of the role visualisation may play in assisting student teachers to solve word-problems. The theoretic framework was informed by Bruner’s theory of learning. The research was grounded in the hermeneutic tradition. An interpretivist research paradigm was expedited by using an inductive, naturalistic perspective and relativist ontology. Thirtyeight student-teachers participated in the study. Parallel and convergent qualitative and quantitative data gathering instruments were used, thereby facilitating triangulation and examination for microgenesis. It was found that vestiges of past teaching practices initially limited the participants’ knowledge to a deeply-flawed, banking model of routines and an instrumental perception of mathematics. Disruptive calls for social justice impeded progress. Albeit visualisation strategies liberated understanding, many foundational concepts and skills had to be reconstructed. The confluence of time and rehearsal culminated in some measure of expertise. Sustained effort enabled new knowledge to be compressed and consigned to long-term memory. Salient visual representations assisted participants to conceptualise relational mathematical metaconcepts and reduced the cognitive demands imposed by word-problems but that achievement was a hard-won prize.
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Production and molecular characterization of peroxidases from novel ligninolytic proteobacteria and bacillus strains
- Authors: Falade, Ayodeji Osmund
- Date: 2018
- Subjects: Peroxidase Catalase
- Language: English
- Type: Thesis , Doctoral , PhD
- Identifier: http://hdl.handle.net/10353/9702 , vital:34823
- Description: Inadequate quantity is a major impediment to the industrial application of peroxidase and other industrial enzymes. Consequently, efforts are geared towards increasing peroxidase production by searching for new microbes with enhanced production capacity. In this study, three novel ligninolytic bacteria: Raoultella ornithinolytica OKOH-1 (KX640917), Ensifer adhaerens NWODO-2 (KX640918) and Bacillus sp. FALADE-1 (KX640922) were optimized for peroxidase production and their peroxidases characterized using molecular and biochemical approaches. Molecular analysis confirmed the presence of peroxidase genes in the three bacteria. BLAST result and phylogenetic analysis of the deduced amino acid sequences suggested that Raoultella ornithinolytica OKOH-1 peroxidase (RaoPrx) belongs to a DyP-type peroxidase family while peroxidases from Ensifer adhaerens NWODO-2 and Bacillus sp. FALADE-1 are catalase-peroxidases. The peroxidase genes are available in the GenBank with MF370527, MF374336 and MF407314 as respective accession numbers. Upon optimization, Raoultella ornithinolytica OKOH-1 exhibited the highest peroxidase production at pH 5, 35 oC and 150 rpm. Biochemical characterization showed that RaoPrx had a wide substrate specificity as it was able to oxidize all the tested substrates in this study (ABTS, veratryl alcohol, guaiacol and pyrogallol), except 2, 6-Dimethoxyphenol. However, highest activity by the enzyme was recorded with pyrogallol as substrate. The enzyme had an optimum activity at pH 6 and 50 oC and was very stable at high temperatures (50 oC – 70 oC). Its pH stability was over a pH range of 5.0 – 7.0. Moreover, RaoPrx activity was significantly enhanced by Ag+, Cu2+, Zn2+and Fe2+ while Ca2+, Mg2+, Ba2+, Al3+, Co2+, NaN3 and EDTA inhibited the activity of the enzyme. Nevertheless, RaoPrx exhibited a remarkable dye-decolourizing activity on congo red and melanin, indicating the biotechnological potential of the enzyme in dye decolourization and development of cosmetic agent. Generally, the results from this study suggest that ligninolytic bacteria hold a great potential for enhanced peroxidase production that could meet the increasing industrial demand.
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