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基于语义Web的关键词相关度的搜索模型,是通过计算搜索关键词在各类教学资源网页主要内容文档块中出现的条件概率,来描述该网页与搜索关键词的相关度,同时利用教学资源网页与资源库课程的归属关系,修正计算的相关度结果。该智能搜索系统能够有效地解决用户搜索资源库时返回过多不相关页面的现状,同时根据媒体、课程与关键词的相关度进行排序,使用户能够从系统返回的近似媒体簇中迅速得到有用信息,从而提高检索准确率。 相似文献
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本文结合多元智能理论与商务英语教学实践,把智能目标落实到商务英语课程教学中,使培养各种能力与商务英语课堂教学有机结合起来。帮助商务英语教师明确什么是学生应当掌握的最有价值的知识,应该训练哪些方面的智能,如何探索恰当的教学方法提高学生的商务英语能力,从而更好地实现人才培养目标,使商务英语专业的毕业生在新世纪具有更强的竞争力和适应力。 相似文献
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多媒体主题搜索指在Web中搜索与主题相关的,并且包含多媒体的网页。目前各大搜索引擎（Google、百度）相继推出了多媒体搜索引擎,主要是利用网页中的相关文本提取描述多媒体信息的关键词进行多媒体信息检索,这种搜索引擎能够直接、快速地从Web中寻找多媒体资源。但所搜索得到的网页往往有大量的重复,根据中国互联网网络信息中心2008年发布的统计报告显示, 相似文献
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刘彦宇 《洛阳师范学院学报》2012,(2):80-83
艺术设计专业的学生在制作网页时具有艺术审美优势,但是由于高职院校在艺术设计专业领域开设的网页设计课程很少涉及到计算机科学及信息技术领域的相关知识,往往使得网页设计脱离实际,过于追求美观而忽视用户体验,华而不实.本文提出了一种基于学生先前知识的网页设计教学内容的选择方法.在有限的教学时间内,根据学生的先前知识状态,有针对性地扩展计算机科学及信息技术领域的相关教学内容.从学生的学习效果和学习水平测试分析中得出:这种方法可以更有针对性地选择教学内容,灵活地实施教学. 相似文献
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刘焕春 《中小学实验与装备》2005,15(6):22-23
实施新课程以来，笔根据实验教学目标，科学探究性实验的特点与要求，遵从学生的认知规律，把活动与探究性实验进行了精心的设计，使得活动与探究性实验有序开展，循序渐进，帮助学生取得知识技能的方法不断完善。 相似文献
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金秋荣 《中学历史教学研究》2004,(4):36-37
在传统课程中，教师教的主要是知识与技能，教学方法以讲授式为主，所以评价的内容和手段也是比较单一的。而在新课程背景下，教师要改变过去过分重视知识传授的倾向，帮助学生形成积极主动的学习态度，要在传授知识的过程中发展学生多种学科共通的能力(如搜索和处理信息的能力，判断性思考能力)，培养学生的良好情感、态度、价值观。教学目标多元了，评价内容也就丰富了。 相似文献
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Ray McAleese 《Interactive Learning Environments》2013,21(1):23-49
This paper identifies two important themes in a consideration of skill acquisition in information studies. First, the means by which students, in general, acquire competency in transferable skills such as information retrieval and information searching. Second, how information searching is a special ability that is facilitated by new technologies, such as hypermedia/server/client information systems along with knowledge elicitation and representation techniques. Following a discussion of a generalizable framework for skill acquisition, the paper considers information need—from a transferable skills perspective. The use of knowledge elicitation techniques such as graphical browsers is emphasized. The paper highlights the distinction between discovering and revealing tacit knowledge. The paper concludes with a discussion of recent work on using Multi-dimensional Scaling and other scaling techniques such as Pathfinder (PFNet) algorithms to uncover tacit knowledge in pre paration for information searching. The paper includes a number of recommendations on the way information need—as a transferable skill—can be facilitated in information studies courses. 相似文献
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This study examined epistemic metacognition as a reflective activity about knowledge and knowing in the context of online
information searching on the Web, and whether it was related to prior knowledge on the topic, study approach, and domain-specific
beliefs about science. In addition, we investigated whether Internet-based learning was influenced by epistemic metacognition
and the individual differences examined. Seventy 8th grade students were interviewed retrospectively after searching for online
information about the scientifically controversial topic of dinosaur extinction. Both qualitative and quantitative analyses
were performed. Findings showed that participants expressed reflections about the simplicity/complexity, certainty/uncertainty,
source, and justification of knowledge at different levels of sophistication, according to three patterns of epistemic metacognition.
Prior knowledge was not related to epistemic metacognition in the search context, while study approach and epistemic beliefs
about science were associated significantly, although modestly, with aspects of online knowledge evaluation. Moreover, findings
revealed that Internet-based learning was influenced by overall science-related epistemic beliefs. Learning from Internet
sources was also affected by study approach and epistemic reflections about the justification of online knowledge, as well
as by the interaction between beliefs about the justification of scientific knowledge and beliefs about the justification
of the knowledge accessed concerning the topic. 相似文献
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Chia‐Ching Lin 《International Journal of Science Education》2013,35(15):2001-2022
The main purpose of this study was to examine the structural relationships between scientific epistemological views (SEVs) and information commitments (ICs) of high school students in Taiwan. Data were collected from 486 Taiwanese high school students via two self‐reporting instruments: one was the SEV questionnaire, including five scales for representing students’ views toward scientific knowledge; and the other was the ICs survey, involving six scales for exploring their evaluative standards and searching strategies of online science information. Structural equation modelling analysis was used to examine the relationships between the aspects of SEVs and ICs. The results of the measurement model confirmed that both the SEVs and ICs instruments had highly satisfactory validity and reliability. The structural equation modelling analysis further indicated that students’ SEVs guided their evaluative standards and searching strategy when dealing with Web‐based science information. For example, students who viewed scientific knowledge as more changeable and tentative significantly tended to adopt a more sophisticated evaluative standard, such as carefully inspecting the content of web sites for judging the usefulness. The findings in general suggested that students with more constructivist‐oriented SEVs might develop more advanced standards and searching strategy toward online scientific information to derive great benefit from Web‐based environments. Consequently, the role of SEVs should be highlighted as increasingly metacognitive engagement with online science information. 相似文献
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档案室作为高校行政管理，教学管理、学生管理和为教学服务，科研服务，师生服务重要职能部门，必须立足全球视野，时代高度，一方面，必须加强从事工作人员的理论武装，提高素质，盘活馆藏等基础建设，增加投入，另一方面，更应着力做好信息搜集，安全保密，情报检索与网络建设等创新性，开拓性工作。 相似文献
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信息素质是当代大学生综合素质的重要体现,也是高职生应具备的基本素质。高职院校的信息素质包括知识层面、意识层面和能力层面,其载体是公共课、专业基础课、专业课和信息检索课。信息素质教育应分阶段进行,具有逐级性,做到信息素质教育与专业课教育相结合、课内与课外教育相结合、多媒体多途径教育相结合,全面提高与重点课程相结合,信息检索课与项目建设相结合。 相似文献
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郭绍华 《黑龙江教育学院学报》2011,30(6):200-202
信息时代人们能够使用和开采的信息量极其巨大,信息更新速度不断加快。互联网作为一个巨量、开放的信息库,其信息量一直呈几何级数式速度增长。面对如此纷繁的信息,如何剔除无用的信息,提取有用的知识是一个非常现实的问题。20世纪90年代中期搜索引擎的诞生,为人们寻求网上信息资源提供了方便,随着网络应用的深入,网络信息检索技术应该... 相似文献
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Jennifer G. Cromley Roger Azevedo 《Educational technology research and development : ETR & D》2009,57(3):287-313
New literacies researchers have identified a core set of strategies for locating information, one of which is “reading a Web page to locate information that might be present there” (Leu et al. in: Rush, Eakle, Berger (eds) Secondary school reading and writing: What research reveals for classroom practices, 2007, p. 46). Do middle-school, high school, and undergraduate students (N = 51) differ in effectiveness at locating information within extended hypermedia? Students completed a pretest measure of knowledge about the circulatory system. They then gave verbal answers to 10 researcher-developed questions about the circulatory system, which they answered by searching the environment and thinking aloud about the task. Consistent with large-scale national and international studies, students were only moderately successful at locating information. Successfully locating information was significantly associated with having more prior knowledge, efficient searching, and giving better quality answers to the researcher-posed questions. It was also associated with specific strategies only at the level of individual questions. That is, the “ideal” strategy depended on the question and how the answer was phrased in the text. Implications of the results for teaching students how to search in hypermedia are offered. 相似文献