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Symeon P. Vlachopoulos Costas I. Karageorghis Peter C. Terry 《Journal of sports sciences》2013,31(10):815-823
In this study, we examined the factor structure and internal consistency of the Flow State Scale using responses of exercise participants.This self-report questionnaire consists of nine subscales designed to assess flow in sport and physical activity. It was administered to 1231 aerobic dance exercise participants. Confirmatory factor analyses were used to test three competing measurement models of the flow construct: a single-factor model, a nine-factor model and a hierarchical model positing a higher-order flow factor to explain the intercorrelations between the nine first-order factors. The single-factor model showed a poor fit to the data. The nine-factor model and the hierarchical model did not show an adequate fit to the data. All subscales of the Flow State Scale displayed acceptable internal consistency ( f > 0.70), with the exception of transformation of time ( f = 0.65). Collectively, the present results do not provide support for the tenability of the single-factor, nine-factor or hierarchical measurement models in an exercise setting. 相似文献
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Peter Bloomfield Margaret Mackintosh Barry Costas Eric Dell Sally Graham David Quinn 《Education 3-13》2013,41(2):117-131
The elements of global education should be at the heart of all learning and teaching. In ITE we often protect ‘our subject’ in the belief that it should have more prominence in the curriculum and more teaching time in school. In this article a group of ITE tutors comment on their learning about global education and its inclusion in their subject following a study trip, with students and teachers, to The Gambia. A truly cross-curricular strand develops and ideas within subjects are matched to key concepts of global education. An experiential model of tutor CPD evolves which includes personal challenge of values and attitudes. 相似文献
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Costas D. Porpodas 《欧洲师范教育杂志》1985,8(2):147-162
In view of the elevation of the primary teachers’ training in Greece to a university level, this paper reports on one aspect of those teachers’ training in the existing primary teachers training institutions, that of the curriculum structure.
The effectiveness of their training was investigated by means of a questionnaire, answered by a sample of 324 experienced primary teachers.
According to the results, the Greek primary teachers seriously question the structure and content of the curriculum in the primary teachers training institutions (the Pedagogical Academies), since it contributes to the training of a type of teacher whom neither they want nor the society needs. For an improved and more effective primary teachers’ training scheme they proposed the focusing of the curriculum on the educational sciences. 相似文献
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George Malandrakis Penelope Papadopoulou Costas Gavrilakis Athanasios Mogias 《The Journal of environmental education》2019,50(1):23-36
A scale was developed to assess primary school Teachers’ Self-Efficacy on Education for Sustainable Development (TSESESD). It includes four domains of competences: values and ethics, systems thinking, emotions and feelings, and actions. The scale development is consistent with key principles of educational and social psychology research. Nine hundred twenty-four (924) primary education student teachers and 88 in-service primary teachers participated in the study. Findings demonstrated that TSESESD has good psychometric properties, strong validity and reliability scores, adequate internal consistency (Cronbach α?=?0.97), and satisfactory mean inter-correlation of items within domains (M?=?0.78). TSESESD is considered a reliable instrument for teacher preparation programs aiming to develop primary school teachers’ self-efficacy in ESD. 相似文献
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Costas Dimitracopoulos 《Metascience》2013,22(2):443-445
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Eleni A. Kyza Costas P. Constantinou George Spanoudis 《International Journal of Science Education》2013,35(18):2489-2525
We report on a study investigating the relationship between cognitive ability grouping, reflective inquiry scaffolding, and students’ collaborative explanations of an ecosystem disturbance which took place when a number of flamingo birds died in a salt lake because of nearby intensive human activities. Twenty-six pairs of students from two intact sixth-grade classes participated in the study. All students investigated scientific data relating to the ecosystem problem using a web-based learning environment. One class was provided with web-based reflective inquiry scaffolding (WorkSpace), while the other class used PowerPoint. The main data analyzed for this study consisted of each pair’s written explanation and task-related artifacts. Findings show that the web-based reflective scaffolding supported students in providing valid evidence in support of their explanations. The analyses of the students’ collaborative explanations showed no statistically significant differences that could be attributed to prior achievement between students in the WorkSpace condition, while differences were found between the different cognitive ability pairs in the PowerPoint class. These findings suggest that the WorkSpace scaffolding may have provided more influential support to lower cognitive ability pairs in creating evidence-based explanations. 相似文献
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Tao Wen Quanbo Ge Xinan Lyu Lei Chen Costas Constantinou Clive Roberts Baigen Cai 《Journal of The Franklin Institute》2021,358(1):131-150
As a typical railway Cyber-physical System (CPS), radio-based train control systems have been playing an increasingly important role in rail transit. The engaged network, Global System for Mobile Communications for Railway (GSM-R), which is an out-dated wireless communication technology, will be decommissioned due to diminishing support from industry, and a new generation successor, e.g. Long-Term Evolution (LTE), is urgently required to replace the current network. The radio-based train control systems must be safety critical, which relies on a high-security Data Communication System (DCS). In this paper, a novel wireless network migration methodology in DCS is proposed. By using this methodology, the high-security required DCS performance in radio-based train control systems is maintained and the network migration cost, e.g. the used number of base station (BS), is reduced when updating the GSM-R to LTE. 相似文献
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A sliding mode controller is developed for optimal transient operation of a continuous bioreactor. The sliding mode is the singular arc from the solution of an optimal control problem. The proposed controller is applied through simulations to an anaerobic digester and its performance is evaluated in terms of optimality and robustness properties. 相似文献