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Karel Kreijns Paul A. Kirschner Wim Jochems Hans van Buuren 《Education and Information Technologies》2011,16(4):365-381
Social presence—the degree to which ‘the other’ in a communication appears to be a ‘real’ person—has captured the attention
of those dealing with learning in groups through computer-supported collaborative learning environments. The concept is important
because it affects participation and social interaction, both necessary for effective collaboration and knowledge construction.
This article reports on the construction and validation of a self-reporting (Dutch-language) Social Presence Scale to determine
perceived social presence in distributed learning groups using computer-supported collaborative learning environments. The
result is a one-dimensional scale consisting of five items with an internal consistency of .81. We used a nomological network
of similar constructs for further validation. The findings suggest that the Social Presence Scale has potential to be useful
as a measure for social presence. 相似文献
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Agaath M. Dekker-Groen Marieke F. van der Schaaf Karel M. Stokking 《Teachers and Teaching》2013,19(2):150-171
The Teachers of Promise study has followed the work histories of 57 primary and secondary teachers who had been identified at the beginning of their third year of teaching as having the potential to make a significant contribution to the profession. Using data from surveys and interviews, this paper reports on what sustained or inhibited their initial commitment to and enthusiasm for ‘making a difference’, six years later, both in the classroom and in broader school leadership roles. Satisfaction with their day-to-day experiences in their schools was a particularly strong driver of teachers’ career decisions over time. Thirty-four teachers responded to survey items that were used to identify three different groups of teachers: a group of 10 primary school teachers with the highest levels of job satisfaction who were ‘fulfilling their promise’; a group of 21 primary and secondary teachers who were ‘persevering and coping’; and three teachers who were ‘detached and disengaged’. The group with the highest levels of job satisfaction taught in primary schools where they felt respected and valued, and supported to develop their teaching and leadership expertise. School leadership practices and school cultures in the other two groups diminished teachers’ overall job satisfaction and contribution to collective knowledge building in their schools. Almost all of the teachers had retained their commitment to students, to their current schools and to teaching as a career, including those with lower levels of satisfaction. Although these teachers reported ‘collegial’ relationships with their peers, individualistic school cultures, most often in secondary schools, impacted on their opportunities to learn with and from their colleagues. Few secondary school teachers felt appreciated, and included in school decision-making or had found it possible to combine high standards of classroom teaching with management responsibilities. The study indicates that while most promising teachers were still satisfied with teaching after nine years, relatively few were in schools where they were able to make the impact that had been predicted for them early in their careers. 相似文献
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Agaath Dekker-Groen Marieke Van der Schaaf Karel Stokking 《Scandinavian Journal of Educational Research》2013,57(2):231-254
In vocational education, students have to develop competences for reflection to self-regulate their development during their career. Students' reflection can be supported by teachers interacting with students and giving them prompts. In this study, 46 videotaped feedback dialogues of 23 teachers and their individual students were analysed. A total of 16 teachers participated in a training programme and 7 teachers formed a control group. The study aimed to investigate teachers' questions and responses and students' reactions, and the effects of the training programme. Analysis showed that, in the post-test, the trained group used a broader repertoire than the control group. The trained group, on average, used more hybrid prompts, deep reasoning questions, and prompt responses, which potentially stimulate students to elaborate and reflect. 相似文献
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Literature shows that feedback that is specific, immediate and goal-oriented is effective on (pre-service) teachers’ performance. Synchronous coaching gives this kind of feedback. Due to immediateness of feedback, pre-service teachers can suffer from cognitive load. We propose a set of standardised keywords through which this performance feedback can be delivered – each keyword acts as a summary for the feedback message. The construction and the selection of the keywords is aimed at the reduction of message ambiguity, while at the same time a low level of cognitive load on the pre-service teacher must be maintained. An in vivo pilot-study with 40 respondents (pre-service teachers and their coaches) supported our hypothesis that usage of such sets of standardised keywords will mitigate the levels of ambiguity and cognitive load. These findings and other considerations for additional research using immediate performance are addressed. 相似文献
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Artworks are an inseparable part of the cultural heritage of societies and provide us with a unique look at cultural developments through time and space. For the best possible conservation, it is paramount to know the constituent materials, condition, and construction techniques of the objects (e.g. painting on wood, fresco, sculpture). Such information is required not only for the surfaces of the objects, but also for the interiors; in the imaging discipline, this is known as depth imaging. Here, we introduce a new method for non-invasive depth imaging as an alternative to traditional non-invasive methods when the latter cannot be used to obtain the required information. We use ultrasonic transverse-wave transmission measurements and turn them into virtual reflection measurements. We achieve this by applying seismic interferometry with active sources. Obtaining reflection measurements by seismic interferometry allows us to apply an advanced imaging technique – prestack depth migration, as used in seismic exploration – to produce a high-resolution depth image of an object. We apply our method to ultrasonic data recorded on a mockup of a painting on a wooden support. We validate our method by comparing our results with an image from X-ray computed tomography. 相似文献
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Karel M. Stokking 《International Journal of Science Education》2013,35(12):1261-1283
Against a background of disappointing percentages of students choosing exact and technical studies and the academic choice research tradition, a study into the choice of physics in secondary education has been carried out. It focuses on the predictive value of certain characteristics of the curriculum, the differences between schools and the stability of the choice variable. Two cohorts of students in a representative sample of schools filled in written questionnaires, four times in two years. The data were analysed in several ways that complemented each other, including multilevel analysis. The main predictor of the choice of physics in secondary education is perceived future relevance and no significant differences between schools exist. The choice variable is not stable. Many students feel uncertain about their choice of study and profession. Academic choice processes should be more connected with career choice processes. Certain characteristics of the physics curriculum can be expected to further the possibilities for students to experience physics and physics-like contents and problems as being personally meaningful and interesting. 相似文献
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Innovation in a professional organization 总被引：1，自引：0，他引：1
The innovation of academic programs has been an issue of considerable interest in higher education policy in the Netherlands during the past five years. Both university administration authorities and the minister of education have tried to stimulate the innovation of academic programs by creating incentives.This article evaluates two innovative projects at the University of Utrecht, and the role of incentives in these particular cases. The results of this evaluation are then reconsidered from a theoretical point of view. Conclusions are formulated with respect to the extent to which innovation can be stimulated, and the kind of incentives suitable for this purpose.This article is a revised version of a paper presented at the 9th European Forum of the Association for Institutional Research, Enschede, The Netherlands, August 24–26, 1987. 相似文献
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Shirima Catherine Naudé Luzelle Esterhuyse Karel 《International Journal for Educational and Vocational Guidance》2021,21(3):607-630
International Journal for Educational and Vocational Guidance - Global socio-economic trends in the world of work, especially in transitional societies like South Africa, confront adolescents with... 相似文献