田径跳跃项目专项动作协调能力研究   总被引：1，自引：1，他引：0  

刘擎 《内江师范学院学报》2011,26(6):107-110

通过对田径跳跃项目专项动作特征的研究,对田径跳跃项目专项动作协调能力进行了探索,认为田径跳跃项目的动作协调能力在运动技术上表现为：爆发性用力;跑跳结合;摆、蹬结合和空间动作的控制与定向能力四个方面,这将有助于我们对其专项运动协调能力水平做出科学的量度和判断,提高专项运动协调能力.  相似文献   

Classroom action research on formative assessment in a context-based chemistry course     

Johannes Vogelzang  Wilfried F. Admiraal 《Educational Action Research》2017,25(1):155-166

Context-based science courses stimulate students to reconstruct the information presented by connecting to their prior knowledge and experiences. However, students need support. Formative assessments inform both teacher and students about students’ knowledge deficiencies and misconceptions and how students can be supported. Research on formative assessments suggests a positive impact on students’ science achievement, although its success depends on how the formative assessment is implemented in class. The aim of this study was to provide insights into the effects of formative assessments on achievement during a context-based chemistry course on lactic acid. In a classroom action research setting, a pre-test/post-test control group design with switching replications was applied. Student achievement was measured in two pre-tests, two post-tests and a retention test. Participants were Grade 9 students from one secondary school in the Netherlands. Repeated-measures analysis showed a significant effect of formative assessments on students’ achievement. During the implementation of the formative assessments, intriguing discussions emerged between students, between students and teacher, and between teachers. Adding formative assessments to context-based approaches reinforces their strength to meet with the current challenges of chemistry education. Formative assessments affect students’ achievement positively and stimulate feedback between students and teacher(s).  相似文献   

从费尔巴哈、赫斯到马克思:实践唯物主义的生成图谱     

吴苑华 《嘉应学院学报》2003,21(1):5-9

本文从费尔巴哈直观唯物主义和赫斯行动哲学对青年马克思哲学思想的思维性引领,意欲展示青年马克思实践唯物主义哲学思想的曲线性生成图谱及其内在的逻辑指认。  相似文献   

论自由基反应及其影响因素     

文耀智 《邵阳学院学报(社会科学版)》2001,23(2):42-48

上世纪初发现自由基反应,其特点有三引发、传递和终止;分为单分子和双分子反应.共振杂化体越多的自由基越稳定,对自由基稳定有利的空间构型其反应易进行,溶剂化作用、氢键的形成、过渡态活化能等对自由基反应都有影响.  相似文献   

Increasing the uptake of peer feedback in primary school writing: findings from an action research enquiry     

Stuart Ian Boon 《Education 3-13》2016,44(2):212-225

This article reports on how an action research strategy was used to increase children's uptake of feedback during peer assessment in primary school writing. Several different strategies were used in the study that had been successful in increasing students’ uptake of peer feedback in contexts such as higher education. In order to evaluate how successful these actions were, several different data collection methods were drawn upon to triangulate findings including children's work, observations, informal interviews and mind mapping. Thematic analysis was used to analyse the data generated. Findings are consistent with those from research in other settings which suggest that pupils make better use of feedback if: it is task-involving and useful; there is sufficient time given for them to act on it and discuss it with their peers; and they are asked to reflect on how it has been used to improve the quality of the assessed work.  相似文献   

The P,A and R of participatory action research with unaccompanied girls     

Mervi Kaukko 《Educational Action Research》2016,24(2):177-193

This article discusses the possibilities and the challenges of conducting participatory action research (PAR) with unaccompanied asylum-seeking children and youth. Drawing from a PAR project with 12 unaccompanied asylum-seeking girls in a Finnish reception centre, the paper explores the P, A and R of PAR asking the following questions: what kind of participation is relevant in such a challenging phase of life, being in a new society without families; what is ‘good’ action in these circumstances; and, finally, what is the involvement of the children in conducting the research when they find the practical end product clearly more interesting? The results show that as a flexible and child-centred research method, PAR can be used to promote the participation of children and youth in a reception centre. However, participation in research should not be mandatory: unaccompanied children who have often had too many responsibilities and inadequate protection in the past desire to be assured that it is the adults’ responsibility to make the right decisions concerning the improvements of the children’s lives.  相似文献   

论詹姆士的重效果思想与中国传统的重名思想     

王元明 《天津师范大学学报(社会科学版)》2002,(5):10-15

姆士提出,实用主义方法是一种确定方向的态度,它不是看最先的原则、范畴,而是看最后的效果和事实。这种重效果思想对于冲击中国传统的重名轻效果的思维方式对人们的束缚具有重要意义。儒家的重名轻效果、重义轻利的思想导致了中国社会停滞落后。这种思维方式也是我们党犯“左”的错误的重要思想根源之一。实事求是的实质是突破这种僵化的思维方式,重视实践效果,坚持在实践中检验和发展真理。  相似文献   

由Kuhn-Tucker条件看线性规划的对偶问题   总被引：3，自引：0，他引：3  

安中华 《培训与研究》2004,21(2):22-24

利用非线性规划的kuhn-Tucker条件给对偶线性规划一个统一简洁的定义，并给出线性规划与其对偶线性规划的变量和Kuhn-Tucker乘子的完整关系。  相似文献   

大鼠左心室流出道电生理特性的观察   总被引：1，自引：1，他引：1  

李建东  陈彦静  马建伟  王德宝  葛赋贵 《河北北方学院学报(医学版)》2001,18(2):14-15

目的为了观察大鼠左心室流出道组织是否具有自动节律性.方法利用细胞内微电极记录技术,观察了18例大鼠左心室流出道组织的电生理特征.结果16例(88.89%)出现了自律性电活动,并且可在局部组织记录到典型的慢反应动作电位.结论大鼠左心室流出道组织具有自律性.其生理功能有待进一步研究.  相似文献   

数字功率表设计与制作   总被引：1，自引：0，他引：1  

李松柏  朱娟  聂应国 《内江师范学院学报》2006,21(2):40-43

以时分割模拟乘法器为核心,采用CM O S双积分A/D转换器ICL 7107完成A/D转换和驱动LED显示,设计制作三位半数字功率表。介绍其设计,制作与实验。  相似文献