Bridging scientific reasoning and conceptual change through adaptive web‐based learning     

Hsiao‐Ching She  Ya‐Wen Liao 《科学教学研究杂志》2010,47(1):91-119

This study reports an adaptive digital learning project, Scientific Concept Construction and Reconstruction (SCCR), and examines its effects on 108 8th grade students' scientific reasoning and conceptual change through mixed methods. A one‐group pre‐, post‐, and retention quasi‐experimental design was used in the study. All students received tests for Atomic Achievement, Scientific Reasoning, and Atomic Dependent Reasoning before, 1 week after, and 8 weeks after learning. A total of 18 students, six from each class, were each interviewed for 1 hour before, immediately after, and 2 months after learning. A flow map was used to provide a sequential representation of the flow of students' scientific narrative elicited from the interviews, and to further analyze the level of scientific reasoning and conceptual change. Results show students' concepts of atoms, scientific reasoning, and conceptual change made progress, which is consistent with the interviewing results regarding the level of scientific reasoning and quantity of conceptual change. This study demonstrated that students' conceptual change and scientific reasoning could be improved through the SCCR learning project. Moreover, regression results indicated students' scientific reasoning contributed more to their conceptual change than to the concepts students held immediately after learning. It implies that scientific reasoning was pivotal for conceptual change and prompted students to make associations among new mental sets and existing hierarchical structure‐based memory. © 2009 Wiley Periodicals, Inc. J Res Sci Teach 47: 91–119, 2010  相似文献   

Facilitating Students’ Conceptual Change and Scientific Reasoning Involving the Unit of Combustion     

Chin-Quen Lee  Hsiao-Ching She 《Research in Science Education》2010,40(4):479-504

This article reports research from a 3 year digital learning project to unite conceptual change and scientific reasoning in the learning unit of combustion. One group of students had completed the course combining conceptual change and scientific reasoning. The other group of students received conventional instruction. In addition to the quantitative data, six students from each group were interviewed to evaluate their conceptual change, correct concepts and scientific reasoning. Results indicate that the experimental group’s students significantly outperformed the conventional group on the Combustion Achievement Test (CAT), Scientific Reasoning Test (SRT) and Combustion Dependent Reasoning Test (CDRT). Moreover, the experimental group’s students use higher levels of scientific reasoning more frequently and changed their alternative concepts more successfully than did the conventional group. Furthermore, once the experimental group’s students’ successfully changed their conceptions, their concepts tended to be more stable than the conventional group’s students, even after the 6th week of learning. These results demonstrate that combining conceptual change and scientific reasoning indeed improves students’ conceptual change and scientific reasoning ability more effectively than conventional instruction.  相似文献   

INVESTIGATING PRESERVICE TEACHERS’ UNDERSTANDING OF BALANCE CONCEPTS UTILIZING A CLINICAL INTERVIEW METHOD AND A VIRTUAL TOOL     

Jennifer Wilhelm  Shirley Matteson  Xiaobo She 《International Journal of Science and Mathematics Education》2013,11(5):1209-1231

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Enlightenments on Comparison and Contrast of Confucius Cultures Between China and Korea     

Liu Xin-geng  Wu Ping-li  She Zhi-zi 《海南广播电视大学学报》2008,9(4)

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我国综合格斗运动的发展问题及对策研究     

贾瑞聪 《中华武术(研究)》2020,(2):121-123,120

近年来UFC等综合格斗赛事以非常快的速度风靡全球,而我国综合格斗运动虽也在不断发展,但与UFC等全球大型赛事相比较,仍然处于不完善的落后局面。本文通过文献资料法对我国综合格斗运动发展问题的研究,得出我国综合格斗运动发展中存在训练系统不科学、商业运作能力不足等问题,提出应该加强综合格斗赛事宣传,创立和引进更加科学化的训练体制,以利于我国综合格斗运动的快速发展。  相似文献   

改进MFCC参数在非特定人语音识别中的研究   总被引：1，自引：0，他引：1  

田莎莎  唐菀  佘纬 《科技通报》2013,29(3)

随着信息时代的高速发展,人们越来越关注计算机的便携使用方式,以语音输入代替手动输入成为计算机未来发展的一个必然趋势.本文在MFCC特征参数的基础上,提出了一种改进MFCC特征参数--BMFCC特征参数,以提高原MFCC特征参数在语音识别时的识别率和运算速度.BMFCC特征参数在进行参数的提取时,分为特征分量加权、特征分量求差分、主成分分析三个步骤.仿真实验结果表明,本文提出的BMFCC特征参数在识别率和有运算速度上均优于MFCC特征参数,且更具鲁棒性.  相似文献   

《自然科学》教学渗透思想教育的探索与思考     

佘子妃 《湖州师范学院学报》2000,(Z1)

联系《自然科学》中如何“渗透爱国主义教育,渗透环境保护意识,渗透严谨治学、一丝不苟的学习态度教育,渗透爱国主义教育”等四个方面的教学实践经验,阐述了挖掘育人资源、广开育人渠道、优化育人环境、强化素质教育、完善学生人格的重要性,力求探寻到教书育人紧密结合的最佳视点．  相似文献   

中华始祖旅游地的网络舆情分析--黄帝陵、炎帝陵、舜帝陵网络舆情特征及其比较     

许春晓  佘白连 《昆明大学学报》2015,(3)

对始祖旅游的网络舆情的定量研究,能更好地指导始祖旅游地的建设和管理决策。文章选取炎帝陵、黄帝陵和舜帝陵景区这三个广被认可的始祖旅游地,通过整理网络文本,提炼出高频词汇,析出游客对其各项内容的评价。总结出旅游者对始祖旅游总体评价较高;对始祖旅游地的自然风景较满意;始祖旅游地承载着爱国主义教育、增强民族自豪感和休闲等功能;始祖旅游地文化旅游开发单一,文化内涵挖掘不够等结论。因此,始祖旅游地需塑造独特体验、建设经典品牌,深挖人文内涵、丰富旅游精品,开发研学旅游、扩展旅游市场,整合宣传资源、构建营销系统,实现景区合作、提升旅游效益。  相似文献   

基于遗传算法的座舱综合显示器色彩匹配设计方法     

佘代锐  杨俊超  史越  杨达玲 《科技通报》2014,(12)

为解决座舱综合显示器画面色彩匹配设计效率和效果的问题,提出了一种基于遗传算法的座舱显示器色彩匹配设计方法。该方法进行色彩方案基因的有效编码,构建了合理的适应度函数,建立了多目标加权综合遗传模型,最终实现座舱综合显示器色彩匹配设计的自动生成和优化。应用实例证明该方法在短时间内能得到满足设计需求的方案,可用于飞行器座舱综合显示器画面色彩匹配设计。  相似文献   

专利国际申请的费用及其控制策略研究*--基于专利审查高速路的研究视角   总被引：1，自引：0，他引：1  

佘力焓  朱雪忠 《情报杂志》2014,(10)

全球专利申请激增,专利国际申请费用成为专利申请人获得一国专利权必须考虑的成本,主要为价格成本和交易成本。各国政府根据专利国际申请的态势和本国的国情来制定专利申请价格,因地制宜调整专利国际申请所需的费用。同时,许多国家积极参与专利审查国际协作(专利审查高速路)之中,该合作模式本身并不需要支付使用费或仅仅支付少量费用,且能提高专利申请的授权率、减少答复审查意见通知书的次数、降低继续审查请求及申诉率等,从而降低专利申请至授权之间的交易成本,实现资源的优化配置,促进科技创新。  相似文献