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Techno-economic study for sugarcane basse to liquid biofuels in South Africa: a comparison between biological and thermological process routes by University of Stellenbosch. Faculty of Engineering. Centre for Renewable and Sustainable Energy Studies, Liebbrand, N. H., Knoetze, J. H., Gorgens, J.
Published 2010“…For each main process route, various modes or configurations were evaluated, and in total eleven process scenarios were modelled, for which fourteen economic models were developed to include different scales of biomass input. …”
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Organisational discourses : electronic windows on the work of HIV/AIDS-care organisations by Solomons, Cecily
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Correlation between SQUID and Fluxgate Magnetometer Data-sets for Geomagnetic Storms: Hermanus by Matladi, Thabang-Kingsley
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The hydrodynamics of supercritical packed countercurrent columns by Franken, Hendrik Hermanus
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Page will reload when a filter is selected or excluded.- Achievement 2 results 2
- Bilingual mode of instruction 2 results 2
- "The challenges of ever-increasing demand for university education in the face of inadequate human and infrastructural resources and rapidly increasing population have necessitated distance learning programmes. This study evaluated Universities of Ibadan and Lagos Distance Learning Programmes. Samples of 200 participants (100 graduates. and 100 employers) were purposively selected. Two research questions guided the research. Two validated instruments with reliability coefficients of 0.82 and O.86 respectively, were used to collect data. Data were analysed using chi square and independent t-test. Findings revealed that graduates of UIDLC performed significantly better than their ULDLI counterparts, in terms of class of degree obtained: a chi-square value of (1632.18) which is significant at 0.05, (p < 0.05). This shows that there is a statistical significant difference in the performance of UIDLC distance learning education graduates and their ULDLI counterparts and it is to the advantage of UIDLC . In addition, graduates of both programmes were making similar positive impact in their work environment as the difference in their job performance is not statistically significant. The two distance learning institutions strove to achieve the objectives of providing quality education through distance learning mode of instruction in educating distance learners to enhance learner's productivity.Recommendations made were: the two institutions must aim at improving teachinglearning resources, learner-support services and establishing human resource development centres to aid develop strong and holistic human resources in order to improve quality of their graduates and also position distance education in Nigeria for international recognition." 1 results 1
- An electronic component is an entity in a system which can not be further sub divided in the course of a given relability. However a component can make up parts which is regarded as self-contained unit. Thus while thereliability of a system can be influenced by altering its structure, the reliability of what is considered a component cannot be changed in such a manner, and if different characteristics are desired, the component must be replaced by another with different reliability parameters. Electronic components can be classified into two groups. The first group are those that are observed only until they fail, because either they cannot repaired, or the repair is uneconomical, or the problem is such that only the life history up to the first failure is of interest. These called non-reparable (or non-repaired) and their failures are catastrophic. The second group are those components that are repaired upon failure, hence their life histories consist of alternating operating and repair periods. They are called repairable components. This paper presents the basic concept of electronic component reliability and quality assurance. A brief historical perspective is presented along with operational definitions. The factors affecting reliability as well as the costs to provide reliability re also described. Failure modes are depicted as well as the environmental effects that affects reliability. 1 results 1
- Anambra state 1 results 1
- Basic Science 1 results 1
- Bilingual mode of instruction is considered very important at the primary level of education. This becomes very necessary due to the multiplicity of languages evident in some countries like Nigeria. Consequently, bilingual situation is observed in primary schools at certain levels of primary education. Pupils learn and are taught in English language which is quite different from their ethnic languages. The study therefore investigated the effect of bilingual mode of instruction on pupils’ achievement in Social Studies. The study adopted quasi- experimental approach. Stratified and simple random sampling was used to draw a sample of200 basic six (6) pupils from four schools (two rural and two urban schools) for the study. The instrument (Social Studies Achievement Test (SSAT) was developed by the researchers and used for data collection. The instrument was subjected to Kuder Richardson 21 with reliability coefficient of 0.82. The result of the study show that the bilingual mode of instruction has significant effect on achievement of pupils in Social Studies F (1.191) - 72.738, p< 0.05 Partial Eta Square n?= .276. Therefore the effect size (27.6%) is moderate. Hence, mode of instruction accounted for 27.6% of the total variance in the pupils’ achievement in Social Studies. 1 results 1
- COVID-19 1 results 1
- Computer literacy 1 results 1
- Effective teaching 1 results 1
- Forest conservation information, 1 results 1
- Gender 1 results 1
- Homestay 1 results 1
- It adopted quasi- experimental approach. A multistage sampling technique was used to draw a sample of200 basic six (6) pupils from four schools. The instrument used for the data collection was Basic Science achievement Test (BSAT). It was developed by the researchers. Trial test of the instrument was done using Kuder Richardson 21. The reliability coefficient is 0.80. The result of the study shows that the bilingual mode of instruction had significant effect on Basic Science F (1.191) = 57.10, p< 0.05 Partial Eta Square = .230. Therefore the effect size (23%) is moderate. The bilingual mode of instruction also has significant main effect on gender in achievement of pupils in Basic Science F (1191)=9.76, p= .002 partial eta squared = .049 . However the effect size (4.9%) is low. Therefore, it was recommended that policy makers should include the use of bilingual mode of instruction in policy formulation for basic schools. 1 results 1
- It is widely known that formal learning is best experienced in the confinement of classroom environment. Educational and other related activities were mopped together because of homestay induced by COVID-19 pandemic, resulting in remote teaching-learning mode and manipulations of computers and the internet which were alien to some undergraduates and lecturers. The study therefore, examined the influence of Homestay, Socio-Economic Status and Computer Literacy on Undergraduates' Learning Attitude during Covid-19 Pandemic's Induced “Pedagogical Restructuring’’ in the University of Ibadan. Ex-post facto design ofcross-sectional study and multi-stage sampling techniques guided the study. Five faculties, 20 departments, 30 Economics, 400 undergraduates and 30 teachers were randomly selected for the study. Three research questions and three validated instruments-Depression, Anxiety and Stress Scales (r = 0.85), Undergraduates' SocioEconomic Status and Computer Literacy Scale (r = 0.75), Attitude to Learning Scale (r = 0.70), were used in the study. Data obtained were analysed using descriptive statistics and multiple regression at 0.05. Results revealed that most respondents experienced one psychological trauma during COVID-19 pandemic homestay. Further finding showed that independent variables were reliable predictors of undergraduates' attitude to learning during COVID-19 pandemic homestay (F(2.396) =9.470, p<0.005). Computer literacy made the highest contribution to the students' attitude to learning (β = 1.91, t = 3.815, p<0.05), followed by experiences of the undergraduates (β = .159, t = 3.174, p<0.05). The paper recommends that the University of Ibadan management should consider the socio-economic status of its undergraduates before advancing into individual differences', sensitive educational event such as adoption of online platforms during COVID-19 pandemic. 1 results 1
- Learning- attitude 1 results 1
- Reliability, 1 results 1
- School Location 1 results 1
- Social Studies 1 results 1
- Socio-economic status 1 results 1
- The Covid-19 pandemic has brought extraordinary challenges and has affected the educational sectors in all ramifications. This, therefore calls for the need to sustain and provide quality education despite its challenges and forced many institutions to reposition their educational practices which predominantly adopted the conventional methods of teaching and learning, as well as assessment which was on venue-based and restricted in terms of online accessibility, swiftness, assessment and materials interaction. In the new normal period, there is much emphasize to reposition our institutions for teaching and learning in terms of the mode of instruction and assessment. Many countries, Nigeria inclusive were forced to migrate to a more robust innovative online teaching and learning, and different forms of online instruction and assessment using diverse platforms such as Emergence Remote Teaching (ERT), google meet, zoom, Microsoft team and others. These online teaching platforms have implications for lecturer-student interaction, satisfaction, engagement, and success in curriculum planning and implementation issues. Seventy-five lecturers in the faculty of Education from the 11 departments partake in the study. Questionnaires and structured interviews were used to collect data. Data collected were analyzed using the descriptive statistics of mean, while the qualitative data was content analyzed. This study identified the challenges of teaching staff and students in teaching and learning using ERT, University of Ibadan as a case study. Challenges idented includes: internet connectivity, technological experiences, power supply,and lack of access to reliable internet connection .The perceived benefitswere a reduction in transportation costs, effective distance learning, stability in communication and lecturers' familiarisation with online emerging technology. ERT platforms should be designed with engaging and interactive content, instructors and students' learning activities to maintain students’ interest during the lesson session were recommended. 1 results 1
- The need for conservation of forests resources, which are presently under continuous depletion, is topical to sustainable development in Nigeria. Despite this, the annual rate of forest depletion in Anambra State is alarming. One of the adduced reasons for this had been inadequate access of residents who rely on forest resources for their livelihood to environmental amelioration information. This study therefore reports the media in use or that could be employed to effectively keep Anambra State residents’ abreast on environmental amelioration issues. The study employed multistage stratified random sampling technique where the state was stratified into three senatorial districts. One local government area with urban, peri-urban and rural settlements were then purposively selected in each district to account for the socio economic background of the people in the study area. Two wards each were picked from each settlement and thirty questionnaires were administered in each ward, giving a total of 540 respondents for the study. Data generated were analysed using descriptive (Tables, frequency counts, percentages and pie chart) and inferential (Pearson’s correlation coefficient, Chi-square and one way Analysis of variance) test statistics at p = 0.05. The study revealed that more people (40.9%) had access to radio followed by television (24.5%) and radio was favored as the most appropriate and reliable medium for dissemination of forest conservation information (FCI) in the study area. Further, majority of respondents listened to radio and television programs in the evening (57.7%). However majority (63.3%) of the respondents could not compare extension agents and mass media messages because they do not have access to extension agents. The study also observed a significant difference in the effectiveness of the different modes of receiving information in the three senatorial districts and a strong positive relationship between the information sources in the study area and access of the sources to the people for FCI. Also, even though a strong positive relationship existed between the respondents’ access to media and the reliability of the media for FCI in Anambra North (r = 0.92), Central (r = 0.86) and South (r = 0.91) senatorial districts, the reliability of media for FCI does not have a relationship with respondents’ access to media among in Anambra North, (χ2 = 59.13), Central (χ2 = 88.0) and South (χ2 = 60.5). In general, environmental outreach goals in the study area will continue to rely on effective communication to the local people who share their rural frontier with the earth’s biological wealth. 1 results 1
- The study evaluated pre-school education in Nigeria with respect to the nation's policy statements on this level of education and the extent to which the policy statements are being implemented. The variables of interest included pre-school teachers' instructional delivery modes, class size, and instructional material provision and use. The sample consisted of 93 pre-school teachers and 2859 pupils aged 4 - 5 years. Schools were selected through stratified random sampling to ensure adequate representation of private, public, urban and rural schools. Three valid and reliable classroom observational instruments were used to record instructional delivery in 216 lessons in 72 pre-primary classrooms. Data analysis involved the use of frequency, percentages, t- test, chi-square and graphical illustrations. The results revealed that teacher whole-class interaction characterized by direct instruction was the prevailing approach. Direction of communication was mainly from the teachers to the whole class, whereas the more personal ope-to-one communication between teacher and pupil occurred less frequently; use of play did not feature; the class size ranged from 8 to 99; minimal or no instructional materials were used by the teachers during teaching-learning activities. The practice, which emerged, showed that great differences exist between policy recommendations and practice on what and how pre-school programmes should be, organized in Nigeria and these may hinder our achieving the set out objectives for this level. 1 results 1
- This study sought to determine the principles of teaching they consider when designing tasks for teaching, the types of tasks that address the principles being implemented and how they seek feedback on the theoretical and practical aspects of the framework by the mathematics teachers in primary, secondary, colleges of education and university in Oyo state. The study adopted a descriptive research design of correlational type to achieve the purpose of the study. A total number of two hundred (241) and forty-one mathematics teachers in Ibadan, Oyo state, Nigeria were selected as respondents. Sampling was done using stratifies sampling technique from primary, secondary and Colleges of education in Oyo State, Nigeria. The age range of respondents was 47±10.5 years with mean of 48.41 and 3.75 standard deviation. The research instrument employed was self-developed questionnaire for the purpose of data collection for the study. The questionnaire consists of demographic section, and principles of teaching that teachers across the categories of school, types of tasks that addresses the principles of teaching indicated and how feedback is obtained on the theoretical and practical aspect of the framework. The instrument was pilot tested using mathematics teachers in Ogun state teaching staff commission and the reliability coefficients obtained were 0.81, 0.63 and 0.73 for primary, secondary and college of education respectively. Data collected was analysed using using statistical tools like frequency counts, percentages and measure of central tendency (mode). The findings revealed that there were similar responses on the principles of teaching indicated by all the categories of the teachers except the university teachers. On the issue of types of tasks that address the principles indicated there was consensus in their responses, and finally, there is a wider disparity on how the mathematics teachers at various educational levels seek feedback on the theoretical and practical aspect of the framework. It was concluded that varying degree of performance of learners in mathematics at the various level of education was due to disparity in the method of seeking for feedback and to some extent the differences in the types of tasks that address the principles of teaching being claimed. Based on this, researcher recommended that standard as listed in principles of teaching should be adhere to by mathematics teachers, tasks that are commensurate with the standard of principles of teaching and the appropriate measures of feedback should be followed to the later. 1 results 1
- Through this study researchers sought to evaluate the effects of qualification on instructional delivery modes of practicing preschool teachers in Nigeria. The sample consisted of 93 preschool teachers and 2,859 pupils aged 4 to 5 years. Schools were selected through stratified random sampling to ensure adequate representation of private, public, urban, and rural schools. A questionnaire and two valid and reliable classroom observational instruments were used to record instructional delivery in 216 lessons in 72 preprimary classrooms. Data analysis involved the use of frequency, percentages, t-test, chi-square, and graphical illustrations. The results revealed that none of the teachers observed had preschool education training; teacher whole-class interaction characterized by direct instruction was the prevailing approach; use of play did not feature; whole-class activity occurred more than individual pupil activity monologue, and other distracting behaviors occurred less frequently. The direction of communication was mainly from the teacher to the whole class, whereas the more personal one-to-one communication between teacher and pupil occurred less frequently. 1 results 1
- catastrophic failure, 1 results 1
- degradation failure 1 results 1
- degree of failure, 1 results 1
- evaluation, pre-school education, Nigeria policy statements, instructional delivery modes. 1 results 1
- failure rate, 1 results 1
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