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本文研究了Rademacher级数所产生的分形维数,得到精确的公式.  相似文献   

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Biographical surveys of 65 inventors employed in the mining industry were contrasted with those of a control group of men of similar age, education and period of employment who had failed to display inventiveness in their work. The following variables were taken into account: family life; course of learning; origin and development of interests; financial status; health and physical fitness; course of professional work. It was shown that positive parental attitudes had influenced the development of certain features in theses people as children, which later resulted in their adult life in a creative approach to their professional work. In a similar way, negative parental attitudes were restrictive and made development of such features difficult.  相似文献   

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A sample of 2072 respondents In 176 courses from four different departments In a community college completed a questionnaire concerning their attitudes towards various aspects of their studies. Results showed that the factor structure of the responses from the different departments was almost Identical, In spite of differences In students' demographic background and the purpose of studies. A regression analysis on the general satisfaction with courses revealed the teacher as the major contributor and the Interpersonal relations between students as an additional factor. When the willingness to continue studying in the same college was analysed, the Interpersonal relations between students were the major factor when the analysis was based on individual scores, but not when it was based on class‐averages. In both cases the difficulty of the course and the general evaluation of its quality were significant additional contributors. It was concluded that in order to evaluate higher education courses accurately, a generally applicable tool can be devised, but that this tool should cover social aspects of the study‐situation not yet Included in currently used evaluation questionnaires.  相似文献   

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Judgements made about the personal qualities of candidates for a Postgraduate Certificate in Education course were compared with similar judgements made about students later in the course and with their teaching competence as demonstrated on final teaching practice. Little correspondence was found. While very high initial ratings were usually confirmed by later good performance, teaching competence was generally not predictable from the initial judgements.  相似文献   

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教材是教学活动的基本依据 ,是教育改革成果的集中体现。本文主要阐述了我国新形势下教育学院所面临的问题以及如何进行教材改革 ,提出优选教材 ,基本教材与补充教材相结合 ,文字教材与软件教材相结合的教材改革思路。  相似文献   

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Because school learning entails not just accretion of knowledge but the structuring and restructuring of knowledge and cognitive skills, the conception and construction of educational achievement measures must be cast in developmental terms. And because student characteristics as well as social and educational experiences influence current performance, the interpretation and implications of educational achievement measures must be relative to intrapersonal and situational contexts. These points imply a strategy of comprehensive assessment in context that focuses on the processes and structures involved in subject-matter competence as moderated in performance by personal and environmental influences. This article addresses in detail both the nature of developing competence and its measurement in terms of context-dependent task performance. Construct-irrelevant task difficulty that might jeopardize the meaning of test scores as well as construct-irrelevant influences that might jeopardize implications for action are taken into account via the comprehensive measurement of relevant contextual factors. Comprehensive assessment in context thus facilitates valid interpretations of the meaning and implications of ability and achievement scores in particular instances, thereby lightening the interpretive and ethical burdens on test users and enhancing the validity of test use.  相似文献   

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分形几何的特征及其维数   总被引:6,自引:0,他引:6  
本文介绍了分形几何发展的三个阶段,分形几何的特征与维数。  相似文献   

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This reports the results of a study carried out in the north of England to compare the attitudes of teachers of educationally sub‐normal and normal children in special schools, junior schools and secondary modern schools. Teachers answered questions about their experience and qualifications, contact with parents, attitudes to children and satisfaction in teaching. Teachers in special schools tended to show attitudes similar to those of parents or social workers. They appeared better trained for the task in hand, more interested in their pupils, more concerned about their job and more satisfied generally.  相似文献   

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