The enhancement of quality education using self-assessment strategies in the Zambezi region of Namibia

This sequential explorative mixed methods study aims to explore how selfassessment strategies can be used to enhance quality education in schools in the Zambezi region of Namibia. The researcher posits that teachers are key in enhancing quality education if accorded appropriate recourses to innovate and explore the use of self-assessment strategies in schools. A pragmatic research approach was used to guide this sequential explorative mixed methods study. The study sought participants’ perceptions on four sub-problems of the study: What entails quality and quality education? How can self-assessment strategies be linked to quality and quality education in general terms? What recourses are available to ensure that quality education is realised by the use of self-assessment strategies in the Zambezi region? How can self-assessment strategy models be developed to enhance the quality of education in the Zambezi region? Purposefully sampled school principals and heads of departments of five combined schools participated in the study. During the first phase, face-to-face interviews were conducted with the five participating school principals while the HoDs were engaged in a focus group interview. The qualitative data was later used to inform the design of the second phase of the study (quantitative). In the second phase, fifty-four teachers completed Likert-scale questionnaires which were analysed using IBM SPSS.19 and Microsoft Excel to compare with the qualitative data. This study revealed that schools have common understandings of quality and quality education albeit defined differently. The study also revealed that external professional support is inadequate to support teachers in continuous professional development activities. Furthermore, the study showed that the available recourses are seldom utilised to enhance quality education in schools. Finally, the study revealed that the use of one type of teacher self-evaluation (TSE) deprives innovative teachers from initiating and exploring other viable self-assessment strategies. Therefore, this study propagates the use of alternative self-assessment strategies that can contribute towards the enhancement of quality education in schools in the Zambezi region of Namibia.Educational Leadership and ManagementD. Ed

Towards a Sustainable Energy Future for Sub-Saharan Africa

Current global population is estimated at 7.5 billion with 1.25 billion living in developed countries and 6.25 billion in less developed countries. Africa’s population is approximated at 1.25 billion with 1.02 billion in sub-Saharan Africa. Globally, an estimated 1.4 billion people lack access to electricity and 3 billion rely on solid fuels for cooking and space heating. Two thirds of those lacking access to electricity live in sub-Saharan Africa, whereas only about 16% of those in sub-Saharan Africa use modern energy forms as the primary cooking fuel. Lack of access to electricity has adverse socio-economic effects, while heavy reliance on solid fuels has negative socio-economic, health, and environmental impacts. Several initiatives are being undertaken to mitigate the situation; notable are future aspirations for universal access to clean and modern energy expressed in the 2030 sustainable development goals (goal number 7), 2063 African Union Commission Agenda, Paris Agreement, and the United Nations Sustainable Energy for All (SE4A). This chapter discusses the past and present energy situation and presents possible scenarios for a sustainable energy future in sub-Saharan Africa, with a particular emphasis on Southern Africa

Zambia research situation analysis on orphans and other vulnerable children

This item is archived in the repository for materials published for the USAID supported Orphans and Vulnerable Children Comprehensive Action Research Project (OVC-CARE) at the Boston University Center for Global Health and Development.Addressing the needs of orphans and vulnerable children (OVC) and mitigating negative outcomes of the growing OVC population worldwide is a high priority for national governments and international stakeholders across the globe who recognize this as an issue with social, economic, and human rights dimensions. Assembling the relevant available data on OVC in one place, and acknowledging the gaps that still exist in our knowledge, will assist policy makers and program implementers to make evidence-based decisions about how best to direct funding and program activities and maximize positive outcomes for children and their caretakers. This Research Situation Analysis, Zambia Country Brief presents a program-focused summary of available information on: • The number of orphans and vulnerable children in Zambia • Current policies, programs and interventions designed and implemented to assist them • Gaps in these policies, programs and interventions • OVC research conducted between 2004-2008 • Gaps in the Zambian OVC evidence base. The Brief analyzes the available data for critical gaps in the national response and our understanding about whether current interventions are fulfilling the needs and improving the lives of vulnerable children. The report then recommends actions required to increase the knowledge base for improving the effectiveness and impact of OVC programs

Evolution and spatial variability of heavy metals in mussels (<i>Mytilus edulis</i> L.) in the Scheldt estuary (1996-2002)

This paper presents data on the heavy metal contamination of the soft tissues of marine mussels along the Scheldt Estuary. The study considered both arms of the Scheldt estuary, i.e. the relatively polluted Western Scheldt (WS) and the now marine tidal bay of the Eastern Scheldt (ES). The two systems present an ideal opportunity to investigate, in a field situation, the role of physico-chemical and pollution gradients on metal accumulation in mussels. In the WS, depending on the metal, tissues concentrations decreased by 2 - 6 times from Hansweert (the landward limit for mussels) to Westkapelle on the North Sea coast. Similar decreases were also observed in the ES. With a few exceptions (i.e. Cd, Cu), there were no clear differences in tissue metal concentrations between WS and ES. The study also showed strong positive correlations between tissue metal concentrations and distance from the sea in both systems for most metals. Similar trends were observed for both WS and ES indicating that salinity and metal gradients are not entirely responsible for increasing metal tissue levels towards the inland. Additionally, the influence of the constructed storm surge barrier was evident as heavy metal levels in mussels at sites around the barrier were considered elevated. Furthermore, there were only modest decreases in metal concentrations in mussel tissues between 1996 to 2002, further indication that even in the cleaner ES, efforts to reduce the impact of environmental metal pollution take time to give results

Kenya research situation analysis on orphans and other vulnerable children

This item is archived in the repository for materials published for the USAID supported Orphans and Vulnerable Children Comprehensive Action Research Project (OVC-CARE) at the Boston University Center for Global Health and Development.Addressing the needs of orphans and vulnerable children (OVC) and mitigating negative outcomes of the growing OVC population worldwide is a high priority for national governments and international stakeholders that recognize this as an issue with social, economic, and human rights dimensions. Assembling the relevant available data on OVC in one place, and acknowledging the gaps that still exist in our knowledge, will assist policy makers and program implementers to make evidence-based decisions about how best to direct funding and program activities and maximize positive outcomes for children and their caretakers. This Research Situation Analysis, Kenya Country Brief, presents a program-focused summary of available information on: • The number of orphans and vulnerable children in Kenya. • Current policies, programs and interventions designed and implemented to assist them. • Gaps in these policies, programs and interventions. • OVC research conducted between 2004 and 2008. • Gaps in the Kenyan OVC evidence base.The Brief analyzes the available data for critical gaps in the national response and our understanding about whether current interventions are fulfilling the needs and improving the lives of vulnerable children. The report then recommends actions required to increase the knowledge base for improving the effectiveness and impact of OVC programs.The USAID | Project SEARCH, Orphans and Vulnerable Children Comprehensive Action Research (OVC-CARE) Task Order, is funded by the U.S. Agency for International Development under Contract No. GHH-I-00-07-00023-00, beginning August 1, 2008. OVC-CARE Task Order is implemented by Boston University. The opinions expressed herein are those of the authors and do not necessarily reflect the views of the funding agency

Career maturity, career knowledge, and self knowledge among psychology honours students : an exploratory study

This study explores career maturity, self knowledge and career knowledge and how they influence career decision-making processes among psychology honours students at a South African institution of higher learning. A mixed method approach was used to collect data among (N=62) students who were asked to fill in two career development questionnaires namely, the Career Decision-making Difficulties Questionnaire (CDDQ) and the Career Development Questionnaire (CDQ). 10 scales were measured using the CDDQ. Analysis of the CDDQ revealed moderate difficulties on the General Indecisiveness, Dysfunctional Beliefs and Occupational Information scales. Pertaining to the CDQ, 5 distinct scales which explore the levels of Self information (Self knowledge), Decision making, Career information (Career knowledge), Integration of self information and career information, and Career planning were assessed. Analysis of the CDQ revealed that respondents had adequate levels of career maturity. The results of the content analysis on the qualitative data indicate clinical psychology to be the most popular in relation to other fields of study, followed by research psychology counselling psychology and psychometry.Dissertation (MA)--University of Pretoria, 2010.Psychologyunrestricte

Modelling and testing of a low temperature solar organic rankine cycle power plant.

Doctor of Philosophy in Mechanical Engineering. University of KwaZulu-Natal, Durban 2016.The post-apartheid era in South Africa has brought with it great challenges regarding electricity supply with demand far outstripping supply mainly due to the refocusing of the economy to foster industrialisation, the mass electrification programme, as well as several years of underinvestment in power generation and distribution infrastructure. Currently South Africa obtains about 77% of her electricity from coal, 6.5% from nuclear and the rest from a mix of diesel, gas and renewables. The government has adopted a diversification policy that encourages growth in electricity generation from renewable resources; this has led to renewed interest in renewables energies research and development as well as investment. By February 2015, government had procured 4 terawatts of renewable energy – electricity from IPP’s while Eskom completed the grid-connected 100 megawatts Sere Wind farm. This current research is a response to the current energy scenario vis-à-vis supply challenges and research space. The research investigated the technical, economic and environmental viability of a small to medium sized low temperature solar thermal organic Rankine cycle (ORC) power plant. Mathematical and computer models were developed for the ORC, and for the cycle components. The ORC model involved 14 working fluids and three plant configurations. The solar field model employed ethylene glycol water as the heat transfer fluid and involved a 9-collector solar field and a 180-collector solar field. An evaporator model was developed based on a counter flow double pipe configuration and a flow boiling process incorporating both convective and nucleate boiling. Ethylene glycol water was placed on the shell side; the tube side fluid was modelled on four candidate working fluids. The condenser model was based on a flow of vapour over a bundle of horizontal tubes. The working fluid was modelled from five organic fluids; the cooling liquid was ethylene glycol water and was placed on the tube side. Preliminary turbine design models for both radial inflow and axial configurations were developed. The designs were presented in terms of geometric and thermodynamic parameters. The initial results have shown that small turbines for low temperature cycles are feasible. The results of the economic and environmental analyses were a negative NPV value (ZAR -126 389.64), six years energy payback period (EPBP) and 426.9 days (1.17 years) carbon payback period (CPBP). Both the EPBP and CPBP values are comparable with similar technologies. A sensitive analysis based on locally designed and produced power block and solar field produced a positive NPV value. The experimental set-up and experimental procedures were successively achieved but the experiments had to be postponed pending supply of a non-defective unit. The data obtained from the manufacturer show the ORC as a viable power supply. The results of these models and simulations have been published in six peer-reviewed journal papers and six peer-reviewed conferences and conference proceedings. Overall, the research can be considered to have been a success judging by the quantity and quality of research output. A post-research proposal is being prepared and covers the outstanding tasks

Career maturity, career knowledge, and self knowledge among psychology honours students : an exploratory study

This study explores career maturity, self knowledge and career knowledge and how they influence career decision-making processes among psychology honours students at a South African institution of higher learning. A mixed method approach was used to collect data among (N=62) students who were asked to fill in two career development questionnaires namely, the Career Decision-making Difficulties Questionnaire (CDDQ) and the Career Development Questionnaire (CDQ). 10 scales were measured using the CDDQ. Analysis of the CDDQ revealed moderate difficulties on the General Indecisiveness, Dysfunctional Beliefs and Occupational Information scales. Pertaining to the CDQ, 5 distinct scales which explore the levels of Self information (Self knowledge), Decision making, Career information (Career knowledge), Integration of self information and career information, and Career planning were assessed. Analysis of the CDQ revealed that respondents had adequate levels of career maturity. The results of the content analysis on the qualitative data indicate clinical psychology to be the most popular in relation to other fields of study, followed by research psychology counselling psychology and psychometry.Dissertation (MA)--University of Pretoria, 2010.Psychologyunrestricte

Duration of cART Before Delivery and Low Infant Birthweight Among HIV-Infected Women in Lusaka, Zambia

To estimate the association between duration of combination antiretroviral therapy (cART) during pregnancy and low infant birthweight (LBW), among women ≥37 weeks gestation