课程内容研究的新视野——TIMSS课程分析工具“主题追踪图”的演进与启示     

张新宇  袁智强  占小红 《比较教育研究》2011,(1):76-80

美国密歇根州立大学施密特教授等人研究开发并完善的TIMSS"主题追踪图"作为重要的整体性课程分析工具,其使用的建模方法有效弥补了传统研究方法的不足。本文通过检索"主题追踪图"的演变轨迹,认为基于该工具的国际课程比较能全面反映各国课程在主题选择与组织层面的异同,而构建的课程连贯性理想模型更是提供了一种全新的课程内容研究思路与范式。  相似文献   

3DV quality model based depth maps for view synthesis in FTV system     

张秋闻  安平  张艳  张兆杨  王元庆 《上海大学学报(英文版)》2011,15(4):335-341

Depth maps are used for synthesis virtual view in free-viewpoint television (FTV) systems.When depth maps are derived using existing depth estimation methods,the depth distortions will cause undesirable artifacts in the synthesized views.To solve this problem,a 3D video quality model base depth maps (D-3DV) for virtual view synthesis and depth map coding in the FTV applications is proposed.First,the relationships between distortions in coded depth map and rendered view are derived.Then,a precisely 3DV quali...  相似文献   

基于教育主题地图的微内容学习环境的构建研究   总被引：1，自引：1，他引：0  

张豪锋  朱喜梅  冯晓晓 《现代教育技术》2011,21(2):94-96

越来越多的微内容出现在教与学环境中,如何运用各种技术对微内容进行整合就成为亟待解决的问题。文章引入了主题地图的概念,指出教育主题地图应满足的6C要求,希望借助它达到整合微内容资源的目的。最后以基于英语词汇学习的开源微型网络为例,阐述这一网络的构建过程。  相似文献   

概念图及其在数学学习中的现实意义   总被引：10，自引：1，他引：10  

王兄  汤服成 《数学教育学报》2004,13(3):16-18

概念图是用来组织与表征知识的工具.在数学学习中概念图具有重要的现实意义,它可以激励学习者主动建构概念,培养元认知知识和自主性,激发猜想并检验猜想等.学习制作概念图时,要注意:布置任务的形式由结构化逐渐转向弱结构化;概念图制作时应首先集中在一个主题,然后再与其它概念图或主题相连接.  相似文献   

中高级英美留学生叙事语篇零形回指偏误分析     

高世玉 《牡丹江教育学院学报》2020,(1):19-22

在汉语作为第二语言习得中,零形回指对外国留学生来说是一个老大难的问题。通过分析HSK动态作文语料库中英美留学生叙事语篇偏误材料,将偏误类型归为:零形回指不足和零形回指过度两大类,同一话题链中零形回指不足、小句之间使用关联词语连接的偏误、人称作定语多余的偏误、话题转移、小句间语义变化五小类。并进一步分析零形回指偏误产生的原因,应当包括汉语零形回指分布复杂、英语母语负迁移、教材编写方面的影响和泛化学习策略的使用。  相似文献   

运用概念图进行生物教学对学生认知方式的影响     

刘恩山  徐洪林 《教育学报》2003,(7):36-40

本研究以高二学生为被试 ,采用不同教学方法进行高中生物“新陈代谢”一章的教学后 ,对高二学生的认知方式及其学业成绩进行了分析。结果表明 :(1)不同的教与学方法对学生的认知方式会产生显著影响。 (2 )使用画概念图的实验班学生多选择“规则 (P)”为其认知方式。这表明 ,学生主要以有意义的方式在进行学习和建构自己的认知结构 ,其生物学业成绩较好。 (3)运用传统教学法的控制班选择“回忆 (R)”为主要认知方式。这表明 ,控制班学生以机械记忆为主构建自己的认知结构  相似文献   

Application of machine learning techniques to assess the trends and alignment of the funded research output     

《Journal of Informetrics》2020,14(2):101018

Research and development activities are regarded as one of the most influencing factors of the future of a country. Large investments in research can yield a tremendous outcome in terms of a country’s overall wealth and strength. However, public financial resources of countries are often limited which calls for a wise and targeted investment. Scientific publications are considered as one of the main outputs of research investment. Although the general trend of scientific publications is increasing, a detailed analysis is required to monitor the research trends and assess whether they are in line with the top research priorities of the country. Such focused monitoring can shed light on scientific activities evolution as well as the formation of new research areas, thus helping governments to adjust priorities, if required. But monitoring the output of the funded research manually is not only very expensive and difficult, it is also subjective. Using structural topic models, in this paper we evaluated the trends in academic research performed by federally funded Canadian researchers during the time-frame of 2000–2018, covering more than 140,000 research publications. The proposed approach makes it possible to objectively and systematically monitor research projects, or any other set of documents related to research activities such as funding proposals, at large-scale. Our results confirm the accordance between the performed federally funded research projects and the top research priorities of Canada.  相似文献   

基于SuperMap的地形图图幅查询系统设计与实现     

戚国强 《嘉应学院学报》2011,29(8):82-86

基于VB和SuperMap Objects 2008平台,设计实现地形图图幅查询系统.该系统可在1954年北京坐标系或1980年西安坐标系下,实现任意单点或批量坐标解算任意国家基本比例尺地形图新、旧图幅编号,并能根据任意新、旧图幅编号计算四角图廓坐标,并可视化输出.  相似文献   

Looking through the journal Health Psychology:A 29-year review     

胡静  王家奇 《读与写:教育教学刊》2011,(11):3-4,15

Reflected in the journal Health Psychology,various topics concerning the relationship between physical health and psychological as well as sociocultural factors,being investigated on different levels and with kinds of methods,are integrated on the platform provided by health psychology.  相似文献   

移位映射的分布混沌集     

邓金虹 《周口师范学院学报》2011,28(2):30-33

研究了与移位映射有关的分布混沌集.通过引入p-分布攀援和轨道不变映射的概念,找到移位映射的分布混沌集.并给出了f的定义,讨论了f与σ的分布混沌关系.  相似文献