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WWW信息检索技巧   总被引:17,自引:2,他引:15  
World Wide Web 上存储着大量图文声像并茂的有价值的信息。如何快速、准确地从浩如烟海的信息资源中找到自己最需要的信息一直是网络用户利用信息的最大困难。本文分析了WWW 信息检索困难的原因, 介绍了几种重要的中英文探索引擎, 从查全、查准和加快检索速度等几方面总结了WWW 信息检索的技巧。  相似文献   
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The expertise literature within cognitive science has provided a rich series of ideas which can be used to improve applied practice. The authors of the articles in this special issue have taken many of these ideas and made useful elaborations and extensions. In reaction to the articles, we suggest five blocks to a full utilization of the expertise literature and other constructs in practitioner development. These blocks are: (a) the need to go beyond the cognitive realm to the working alliance for the fundamental construct in the domain; (b) the need to realize that the novice-to-expert path takes a long time—perhaps 15 years—to travel; (c) the inappropriate use of a short experience differential in comparative studies of novices and experts; (d) the importance of reflection for development; and (e) the need for professors, in order to be experts, to also be practitioners in the domain.  相似文献   
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From a social semiotic perspective, image designs in science textbooks are inevitably influenced by the sociocultural context in which the books are produced. The learning environments of Australia and Taiwan vary greatly. Drawing on social semiotics and cognitive science, this study compares classificational images in Australian and Taiwanese junior high school science textbooks. Classificational images are important kinds of images, which can represent taxonomic relations among objects as reported by Kress and van Leeuwen (Reading images: the grammar of visual design, 2006). An analysis of the images from sample chapters in Australian and Taiwanese high school science textbooks showed that the majority of the Taiwanese images are covert taxonomies, which represent hierarchical relations implicitly. In contrast, Australian classificational images included diversified designs, but particularly types with a tree structure which depicted overt taxonomies, explicitly representing hierarchical super-ordinate and subordinate relations. Many of the Taiwanese images are reminiscent of the specimen images in eighteenth century science texts representing “what truly is”, while more Australian images emphasize structural objectivity. Moreover, Australian images support cognitive functions which facilitate reading comprehension. The relationships between image designs and learning environments are discussed and implications for textbook research and design are addressed.  相似文献   
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ABSTRACT

Educational provision and practice is being radically changed in England and Wales and the introduction of the 1988 Education Reform Act is having a significant impact on all aspects of school and post‐school provision. This paper considers some of the developments relating to further education including the issue of inclusive education and the position of special needs coordinators during a time of extensive change.  相似文献   
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Consecutive English and Spanish speaking caregivers of 6–24 month old children were randomly assigned to either a control or intervention group. Parents in the intervention group were instructed to view at least 4 options to discipline a child in an interactive multimedia program. The control group participants received routine primary care with their resident physician. After the clinic visit, all parents were invited to participate in a research study; the participation rate was 98% (258/263). The key measure was the Attitudes Toward Spanking (ATS) scale. The ATS is correlated with parents’ actual use of physical punishment. Parents with higher scores are more likely to use physical punishment to discipline their children. Parents in the intervention group had an ATS score that was significantly lower than the ATS score of parents in the control group (median = 24.0, vs. median = 30; p = 0.043). Parents in the control group were 2 times more likely to report that they would spank a child who was misbehaving compared with parents in the intervention group (16.9% vs. 7.0%, p = 0.015). In the short-term, a brief intervention, integrated into the primary care visit, can affect parents’ attitudes toward using less physical punishment. It may be feasible to teach parents to not use physical punishment using a population-based approach. The findings have implications for how to improve primary care services and the prevention of violence.  相似文献   
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Research in Science Education - Students’ difficulties interpreting diagrams remain a concern in science education. Research about improving diagram comprehension has included few studies of...  相似文献   
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