This research work is on time-delayed models of infectious diseases dynamics. The dynamics of infectious diseases are studied in the presence of time delays representing temporary immunity or latency. We have designed and analysed time-delayed models with various parameters to simulate disease dynamics, in a view to gaining insight into the behaviour of a population in the presence of infectious diseases, and the reaction of the population to changes in the management procedure of such infections.

A qualitative study was done to explore and describe the problems of teenage mothers in the southern Hho-Hho region of Swaziland. Ten teenage mothers wrote naive sketches and fourteen teenage mothers were interviewed. The findings of the research indicated a lack of support for the teenage mother in all the dimensions studies in this research which include physical, social, cultural, emotional, spiritual, economical and educational. This lack of support systems were found to be the paramount problem and need urgent attention. The vicious circle of lack of support, ignorance, interruption of education and unplanned motherhood can only be addressed if all stakeholders including the multidisciplinary team actively participate to prevent teenage pregnancy and provide support for teenagers in general. / Nursing Science / M.A. (Nursing Science)

A qualitative study was done to explore and describe the problems of teenage mothers in the southern Hho-Hho region of Swaziland. Ten teenage mothers wrote naive sketches and fourteen teenage mothers were interviewed. The findings of the research indicated a lack of support for the teenage mother in all the dimensions studies in this research which include physical, social, cultural, emotional, spiritual, economical and educational. This lack of support systems were found to be the paramount problem and need urgent attention. The vicious circle of lack of support, ignorance, interruption of education and unplanned motherhood can only be addressed if all stakeholders including the multidisciplinary team actively participate to prevent teenage pregnancy and provide support for teenagers in general. / Adanced Nursing Sciences / M.A. (Nursing Science)

In this thesis, I study the performance behaviour of hedge funds and mutual funds. I study a basket of various risk statistics that are widely used to measure the fluctuation of asset prices. Those risk statistics are used to rank the performance of the assets. The linear dependence relation of these risk measures in ranking assets is investigated and the set of risk measures is reduced by excluding risk measures that produce linearly dependent ranking vectors to other risk measures. The ranks within each of the selected remaining risk statistics are standardised and then linearly transformed into a new set of linearly independent factors where principal component analysis is carried out as a variable reduction technique to remove the noise while preserve the main variation of the original data. The transformed factors are sorted in descending order according to their contribution to the variation of the original data. The factor loadings of the first two principal components PC1 and PC2 are reviewed and interpreted as styles (PC1 as consistency and PC2 as aggression). The universe of a set of hedge funds is classified according to these styles as BL=(low consistency, low aggression), BR=(high consistency, low aggression), TL=(low consistency, high aggression) and TR=(high consistency, high aggression). I examine the performance behaviour of the four different classified classes whereby this classification method provides an indication on returns and management styles of hedge funds. A three-factor prediction model for asset returns is introduced by regressing 12 weeks' forward rank of return on the historical ranks of risk statistics. The first few principal components, which explain the main variation of information captured by risk statistics, are used in the prediction model. The robustness of the model is tested by applying the model to the following 12-week period using the set of independent factors. An investment strategy is constructed based on the prediction model using the set of independent factors. I discover high evidence of predictability and I test for out-of-sample forecasting performance. I then examine the use of subsets of risk statistics from the basket rather than using the set of all risk statistics. I further study the use of the so-called σ2/μ risk measure in predicting the market “turning point” of performance of a portfolio of hedge funds. Risk measure quantity σ2/μ replaces the traditional variance σ2 in the Black-Scholes option valuation formula when it is evaluated for hedge funds.

A qualitative study was done to explore and describe the problems of teenage mothers in the southern Hho-Hho region of Swaziland. Ten teenage mothers wrote naive sketches and fourteen teenage mothers were interviewed. The findings of the research indicated a lack of support for the teenage mother in all the dimensions studies in this research which include physical, social, cultural, emotional, spiritual, economical and educational. This lack of support systems were found to be the paramount problem and need urgent attention. The vicious circle of lack of support, ignorance, interruption of education and unplanned motherhood can only be addressed if all stakeholders including the multidisciplinary team actively participate to prevent teenage pregnancy and provide support for teenagers in general. / Nursing Science / M.A. (Nursing Science)

A qualitative study was done to explore and describe the problems of teenage mothers in the southern Hho-Hho region of Swaziland. Ten teenage mothers wrote naive sketches and fourteen teenage mothers were interviewed. The findings of the research indicated a lack of support for the teenage mother in all the dimensions studies in this research which include physical, social, cultural, emotional, spiritual, economical and educational. This lack of support systems were found to be the paramount problem and need urgent attention. The vicious circle of lack of support, ignorance, interruption of education and unplanned motherhood can only be addressed if all stakeholders including the multidisciplinary team actively participate to prevent teenage pregnancy and provide support for teenagers in general. / Adanced Nursing Sciences / M.A. (Nursing Science)

This diploma thesis tries to analyze aspects of mind mapping as an effective instrument for active and creative teaching of physics at the elementary school and high school. The opening part contains basic knowledge of learning theories, creativity, psychological aspects of mind mapping, difference between mind mapping and conceptual mapping and methodology of the mind mapping. Practical part of the thesis contains methodical advice for teaching physics using mind maps in different levels of teaching process. This thesis presents results of an experiment on success rate of elementary school pupils in solving quantitative tasks using mind mapping

The academic challenges faced by pregnant and nursing students in Zimbabwe do not seem to attract the attention of scholars. This study focused on the educational challenges faced by pregnant and nursing adult learners at Morgenster Teachers‟ College, a tertiary education institution. Participants‟ perceptions of the academic challenges they faced were established through the use of a qualitative methodology in which the semi-structured interview was the dominant data collection method. Non-participant observation and document analysis were employed to complement the dominant method. The findings indicated that the academic challenges faced by mothering adult learners are related to physical problems, social relationships, inadequate financial resources and administrative problems. The study revealed that such students develop strategies to alleviate some of the educational challenges they face. In view of the findings, recommendations are made to improve the learning environment of mothering students and for further research to address the problem. / M. Ed. (Adult Education) / Educational Studies

The academic challenges faced by pregnant and nursing students in Zimbabwe do not seem to attract the attention of scholars. This study focused on the educational challenges faced by pregnant and nursing adult learners at Morgenster Teachers‟ College, a tertiary education institution. Participants‟ perceptions of the academic challenges they faced were established through the use of a qualitative methodology in which the semi-structured interview was the dominant data collection method. Non-participant observation and document analysis were employed to complement the dominant method. The findings indicated that the academic challenges faced by mothering adult learners are related to physical problems, social relationships, inadequate financial resources and administrative problems. The study revealed that such students develop strategies to alleviate some of the educational challenges they face. In view of the findings, recommendations are made to improve the learning environment of mothering students and for further research to address the problem. / M. Ed. (Adult Education) / Educational Studies