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The Global ETD Search service is a free service for researchers
to find electronic theses and dissertations. This service is
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Networked Digital Library of Theses and Dissertations.
Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
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Showing 1 to 3 of 3 (0.054 seconds)Spelling suggestions: "subject:"dataanalise"" "subject:"baananalise""
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Die aard, doel en effektiwiteit van assessering in tersiêre wiskunde (Afrikaans)Louw, Cecilia Jacomina 19 June 2007 (has links)
Mathematics, as a subject, is used in various scientific careers as a selection tool. It is regarded as the cornerstone of scientific literacy. However, since learners in South Africa do not perform optimally in mathematics they do not enjoy international recognition. Education renewal is ongoing, and South Africa currently follows an outcomes-based (OBE) approach. The teaching of mathematics cannot be renewed successfully if assessment methods are not regularly adapted to meet new developments in the field. The incorporation of an OBE approach at school level made it necessary to facilitate assessment renewal in tertiary mathematics at the Tshwane University of Technology (TUT). TUT is engaged in a merger of three institutions, which has made the development of new curricula and teaching material essential. Hence this a perfect time to introduce assessment renewal. The primary purpose of this thesis is to report on the research study and its results, and to make recommendations for improving the practice. The overarching research hypothesis in this study is that a suitable assessment would probably enhance the effectiveness of a student’s learning. The research focused on the following questions: -- To what extent are outcomes-based strategies effectively and regularly introduced in the teaching of mathematics at TUT? -- Will tertiary mathematics facilitators be prepared to implement outcomes-based strategies at TUT? -- To what extent are outcomes-based strategies strategies in subjects supported by mathematics implemented at TUT? -- How does the ecology of TUT affect the implementation of outcomes-based strategies? -- What other factors could influence the level of implementation of OBS at TUT? -- Have any of the mathematics facilitators at TUT received suitable and adequate training in the implementation of outcomes-based strategies? -- What are the possible implications of the study for TUT’s assessment policy? Action research was chosen as the research design because it is ideally suited to improving practice. Quantitative and qualitative data were collected through questionnaires, personal interviews, interviews with focus groups, observations, documentation and a reflective diary. The main findings are as follows:– -- OBE strategies are not being introduced throughout TUT in the teaching of mathematics. -- Group work and peer assessments are rare occurences. -- Some lecturers are convinced that new assessment methods would lower the standard of their teaching. -- Uncertainty about the merger and the varying teaching conditions at the different campuses tend to inhibit lecturers, making them less willing to undertake assessment renewals. -- TUT should review its admission criteria. -- The lecturers cited large class groups, a lack of marking assistance and ignorance about OBE as reasons for failing to undertake assessment renewal. The study prepared respondents for assessment renewal. In the interim, however, TUT has introduced a Policy on Teaching, Learning and Technology, whereby OBE has been selected as the teaching model for TUT. In future, respondents will receive training and guidance in the implementation of OBE. This study has hopefully made a significant contribution to this positive development. / Thesis (PhD (Curriculum Studies))--University of Pretoria, 2007. / Curriculum Studies / unrestricted
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An analysis of precision agriculture in the South African summer grain producing areas / Hendriks J.Hendriks, Joseph January 2011 (has links)
Both globally and locally, agriculture faces ever increasing challenges such as high input costs, strict environmental laws, decrease in land for cultivation and an increase in demand due to the growing global population. Profitability and sustainability requires more effective production systems. Precision agriculture is identified as such a system and is built upon a system approach that aims to restructure the total system of agriculture towards low input, high efficiency and sustainable agriculture.
The aim of this study was to analyse the state of precision agriculture in the summer grain producing areas of South Africa, specifically the North West and Free State provinces. In order to achieve this, a literature study was conducted. During the literature study the term ‘precision agriculture’ was defined and discussed. The precision agriculture cycle and its components were explained and benefits of precision agriculture were identified. The literature study was concluded with identifying and discussing the most widely used and most beneficial technologies as well as reasons for slow adoption.
Findings from the literature study were used to investigate the state of precision agriculture locally. In order to achieve this, a quantitative approach was used and information was collected by means of an empirical study using a questionnaire. Questionnaires were distributed to farmers using selling agents of an agricultural company that is well represented in the targeted areas. The data was then statistically analysed.
The survey showed that only 52% of summer grain producing farmers in the North West and Free State provinces of South Africa practises precision agriculture as defined in the
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literature study. The study also revealed that the majority of precision agriculture farmers are over the age of 40, have more than 16 years of farming experience, are well educated, cultivate more than 1,000 hectares and uses none or little irrigation. The most commonly used precision agriculture technologies were grid soil sampling and yield monitors. The perception among most of the farmers was that precision technologies are not very affordable, not easily available and that it lacks proper testing with regards to efficiency. The group of summer grain–producing farmers that have correctly implemented precision agriculture as per definition stated that the benefits they derived from precision technologies include reduction in input costs, increased outputs and improved management skills. Too high implementation costs and technologies not providing enough benefits were among the main reasons farmers do not implement precision agriculture.
It was concluded that a significant effort and amount of work is needed to increase the use of precision agriculture among summer grain–producing farmers in the targeted areas. A consolidated effort from government, agricultural institutions and agricultural companies will be needed to achieve this goal. Implementing precision agriculture as a system will require education (from primary to tertiary institutions) and improved marketing strategies. Only then will precision technologies be able to help meet the future demands placed on the agriculture sector. / Thesis (M.B.A.)--North-West University, Potchefstroom Campus, 2012.
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An analysis of precision agriculture in the South African summer grain producing areas / Hendriks J.Hendriks, Joseph January 2011 (has links)
Both globally and locally, agriculture faces ever increasing challenges such as high input costs, strict environmental laws, decrease in land for cultivation and an increase in demand due to the growing global population. Profitability and sustainability requires more effective production systems. Precision agriculture is identified as such a system and is built upon a system approach that aims to restructure the total system of agriculture towards low input, high efficiency and sustainable agriculture.
The aim of this study was to analyse the state of precision agriculture in the summer grain producing areas of South Africa, specifically the North West and Free State provinces. In order to achieve this, a literature study was conducted. During the literature study the term ‘precision agriculture’ was defined and discussed. The precision agriculture cycle and its components were explained and benefits of precision agriculture were identified. The literature study was concluded with identifying and discussing the most widely used and most beneficial technologies as well as reasons for slow adoption.
Findings from the literature study were used to investigate the state of precision agriculture locally. In order to achieve this, a quantitative approach was used and information was collected by means of an empirical study using a questionnaire. Questionnaires were distributed to farmers using selling agents of an agricultural company that is well represented in the targeted areas. The data was then statistically analysed.
The survey showed that only 52% of summer grain producing farmers in the North West and Free State provinces of South Africa practises precision agriculture as defined in the
v
literature study. The study also revealed that the majority of precision agriculture farmers are over the age of 40, have more than 16 years of farming experience, are well educated, cultivate more than 1,000 hectares and uses none or little irrigation. The most commonly used precision agriculture technologies were grid soil sampling and yield monitors. The perception among most of the farmers was that precision technologies are not very affordable, not easily available and that it lacks proper testing with regards to efficiency. The group of summer grain–producing farmers that have correctly implemented precision agriculture as per definition stated that the benefits they derived from precision technologies include reduction in input costs, increased outputs and improved management skills. Too high implementation costs and technologies not providing enough benefits were among the main reasons farmers do not implement precision agriculture.
It was concluded that a significant effort and amount of work is needed to increase the use of precision agriculture among summer grain–producing farmers in the targeted areas. A consolidated effort from government, agricultural institutions and agricultural companies will be needed to achieve this goal. Implementing precision agriculture as a system will require education (from primary to tertiary institutions) and improved marketing strategies. Only then will precision technologies be able to help meet the future demands placed on the agriculture sector. / Thesis (M.B.A.)--North-West University, Potchefstroom Campus, 2012.
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