关于大学英语阅读教学的思考     

郑摄 《浙江工贸职业技术学院学报》2003,3(1):95-97

本文分析了大学英语阅读教学中存在的问题,并结合当前的英语阅读考试的特点,提出促进学生阅读能力的培养和提高化解问题的途径和方法.  相似文献   

离子色谱抑制器的历史及发展     

王慕华  郑云法 《丽水学院学报》2003,25(2):34-37

描述了离子色谱抑制器的历史及发展。新的抑制器对于使用者无须太多的介入 ,主要是通过电解去离子水产生抑制中和反应所需的酸和碱 ,能够永久的再生和抑制。抑制器与其它仪器结合 ,如抑制器与淋洗液发生器的结合使用 ,推动了离子色谱的发展  相似文献   

不同运动坐标系中波谱的转换     

洪新华  郑勇 《天中学刊》1997,12(5):29-31

利用洛仑兹变换，可导出运动坐标系中观察到的波谱与静止坐标系中观察到的波谱之间的转换关系，并可得出由于速度不同时运动坐标系中波谱的表达式．在低速情况下（v<相似文献   

应用型本科院校大学生创新实践课程教学研究——以五邑大学材料科学与工程专业中《新能源材料与器件专业综合训练》为例     

何鑫  刘争  张弛  曾庆光  范东华  于洋 《教育教学论坛》2019,(29):206-207

文章以五邑大学材料科学与工程专业中的综合创新实践课程——《新能源材料与器件专业综合训练》为例,探讨了应用型本科院校大学生创新课程的教学实践,通过项目式实践教学,循序渐进地开展不同层次的项目课题研究,课题来源于企业实践、教师科研和学生科技创新等项目。着力培养学生综合利用知识去研究和解决行业中复杂工程问题的能力,培养学生自主学习和终身学习的能力,以及创新和团队合作的能力。  相似文献   

基于网络教学平台的混合式教学模式建构   总被引：1，自引：0，他引：1  

孙翔  冯庆革  黄华存  唐艳葵  梁艳  刘峥  马大朝 《教育教学论坛》2019,(20):184-186

教学改革是高等教育改革的难点问题。当前,互联网+背景下慕课与翻转课堂的融合是教学改革的热点,本文构建了混合式教学具体措施:课程典型问题集、典型案例库和立体化教材资源库构建、MOOC或SPOC+线上线下交互活动、SPOC+翻转课堂教学模式和范式,并提出改革意义,对教学改革具有一定的参考价值和指导意义。  相似文献   

初中物理教科书中的能量概念比较研究     

TAN Xiao PEN Zheng 《课程.教材.教法》2008,(12)

当前,在世界范围内,能量概念在科学教育尤其是物理教育中占据着越来越重要的地位。然而,能量概念的特殊性决定了能量概念教学的多样性和复杂性。关于能量概念的教学,我国的中学物理课程与国外的许多教程有较大差异。比较国内外物理教科书中关于能量概念的呈现方式和教学方式的差异,对改进能量概念在教科书中的呈现方式进而帮助学生进一步理解能量的概念具有一定意义。  相似文献   

农业比重下降对国民经济可持续发展的影响   总被引：1，自引：0，他引：1  

刘铮  李先 《辽宁师范大学学报(社会科学版)》2008,31(4):30-33

近年农业在国民经济中所占份额呈逐渐下降趋势。这种下降既有产业演进合理性,又存隐忧。农业基础地位要求政府加大反哺力度,加快土地流转制度改革,鼓励农业创新,拓展经济功能和非经济功能对国民经济增长的推动作用。现阶段,巩固农业的基础地位,应运用“五个统筹”的科学发展观,促进农业与第二、第三产业又好又快协调发展。  相似文献   

儿童依恋类型的影响因素分析及安全型依恋的培养   总被引：3，自引：0，他引：3  

王金良郑海燕  牟宏伟 《四川教育学院学报》2005,21(8):7-8

本文对影响依恋形成的几个因素进行了分析，这些因素来自父母、家庭以及儿童自身三方面，并且针对这些影响因素我们提出了相应的应对策略，对于培养安全型依恋的儿童具有重要参考价值。  相似文献   

Effects on cytotoxicity and antibacterial properties of the incorporations of silver nanoparticles into the surface coating of dental alloys     

Xiao-ting Shen  Yan-zhen Zhang  Fang Xiao  Jing Zhu  Xiao-dong Zheng 《Journal of Zhejiang University. Science. B》2017,18(7):615-625

The aim of this study was to research the changes in cytotoxicity and antibacterial properties after silver nanoparticles (AgNPs) were incorporated into the surface coating of dental alloys. AgNPs were attached to cobalt chromium alloys and pure titanium using a hydrothermal method, according to the reaction: AgNO₃+NaBH₄→ Ag+1/2H₂+1/2B₂H₆+NaNO₃. A 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay was used to evaluate the cytotoxicity of the alloys when in contact with osteogenic precursor cells (MC3T3-E1) from mice and mesenchymal stem cells (BMSC) from rats. The antibacterial properties of dental alloys incorporating three different concentrations (10, 4, and 2 μmol/L) of AgNPs were tested on Staphylococcus aureus (SA) and Streptococcus mutans (MS). High cytotoxicity values were observed for all dental alloys that contained 0% of AgNPs (the control groups). The incorporation of AgNPs reduced cytotoxicity values. No significant difference was observed for antibacterial performance when comparing dental alloys containing AgNPs to the respective control groups. The results demonstrated that the cobalt chromium alloys and pure titanium all had cytotoxicity to MC3T3-E1 and BMSC and that the incorporation of AgNPs could reduce this cytotoxicity. The concentrations of AgNPs adopted in this study were found to have no antibacterial action against SA or MS.  相似文献   

The effectiveness of self-regulated learning scaffolds on academic performance in computer-based learning environments: a meta-analysis     

Lanqin Zheng 《Asia Pacific Education Review》2016,17(2):187-202

This meta-analysis examined research on the effects of self-regulated learning scaffolds on academic performance in computer-based learning environments from 2004 to 2015. A total of 29 articles met inclusion criteria and were included in the final analysis with a total sample size of 2648 students. Moderator analyses were performed using a random effects model that focused on the three main areas of scaffold characteristics (including the mechanism, functions, delivery forms, mode, and number of scaffolds; how to promote self-regulated learning by scaffolds); demographics of the selected studies (including sample groups, sample size, learning domain, research settings, and types of computer-based learning environments); and research methodological features (including research methods, types of research design, types of organization for treatment, and duration of treatment). Findings revealed that self-regulated learning scaffolds in computer-based learning environments generally produced a significantly positive effect on academic performance (ES = 0.438). It is also suggested that both domain-general and domain-specific scaffolds can support the entire process of self-regulated learning since they demonstrated substantial effects on academic performance. Different impacts of various studies and their methodological features are presented and discussed.  相似文献