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This article presents the results of research into the implicit theories of creativity of Educational Science students preparing for the role of educational counsellors. Educational Science students will soon be working in educational institutions where they are expected to support creativity. Prospective (pre)school counsellors were asked about how they perceive and how they experience creativity in their own schooling by means of a questionnaire and focus group interview. Participants’ answers were analyzed using quantitative and qualitative content analyses. The data obtained from the questionnaire showed that the students mainly defined creativity as the characteristic of a person or process. They saw the major possibility for developing creativity during university studies in stimulating teaching activities and a supportive educational climate. The data from the focus group expanded the students’ definition of creativity through the domain of the expression and the valuation of creativity. In the discussion about the development of creativity during university studies, the role of the study program and the students’ individual characteristics were highlighted. The aspects of Educational Science education that need to be changed to increase the quality of the preparation of future educational counsellors are also considered. 相似文献
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For bulk piezoelectric ceramics plates, the fundamental thickness-stretch (TSt) waves are always coupled to the in-plane extension waves and the symmetric thickness-shear waves. The occurrence of these spurious modes in bulk piezoelectric ceramics plates is undesirable as it may interfere with the operation of transducers. 1–3 piezoelectric composites are promising candidates to suppress the spurious modes mentioned above. However, theoretical modelling of multiphase ceramic composite objects is very complex. In this study, a simple analytical TSt vibration model is constructed from three-dimensional equations of linear piezoelectricity. The mechanical damping is considered in the model by introducing a complex elastic constant. The performance of 1–3 piezoelectric composites is analysed and the electrical impedance results from theoretical and experimental analysis are compared. The results show that there is excellent agreement between the experimental electrical impedance and that obtained by the theoretical TSt vibration analysis. This indicates that 1–3 piezoelectric composites can be operated in a nearly pure TSt vibration mode near the fundamental resonance. The analytical model we present is valid for analysing 1–3 piezoelectric composites plates with large aspect ratios quickly and efficiently. 相似文献
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Besides the well-known cube-on-cube orientation relationship (OR) between M23C6 carbide and matrix, we have determined a new OR named as the twin-related OR in a long-term ageing Ni-based superalloy on the basis of the extensive and detailed electron diffraction analyses. Furthermore, by means of atomic-resolution high angle annular dark-field imaging technique which is implemented in the aberration-corrected scanning transmission electron microscope, we elucidated the interfacial characteristics between M23C6 and matrix for above two types of ORs. Taking into account of the interfacial characteristics, we propose that the twin-related OR possesses a higher total interfacial energy. Thus, its frequency of occurrence is lower than that of the cube-on-cube OR though both ORs are usually seen in the long-term ageing samples. 相似文献
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