一种测试水泥初凝时间的新方法     

张明海  张战营 《洛阳工业高等专科学校学报》1998,(1)

采用流变学的小振幅振荡动态分析法测量了普通水泥、高铝水泥、纯铝酸钙水泥的动态时间谱,从各种水泥的动态时间谱上求出它们的初疑时间分别为179min、60min、143min,与国标测定的结果基本吻合。  相似文献   

用微机验证李萨如图形     

王学勤  王振义 《雁北师范学院学报》1998,(2)

用命名新名词的办法,澄清了在李萨如图形中存在的混乱现象。进一步用微机验证了其主要结论的正确性。  相似文献   

一类非线性电报方程的整体光滑解存在性     

陶长琪  徐晔 《商丘师范学院学报》1998,(Z1)

研究了下列半线性电报方程的Cauchy问题的整体光滑解的存在唯一性．  相似文献   

反全球化问题研究述评   总被引：3，自引：0，他引：3  

李丹 《教学与研究》2005,29(5):63-68

反全球化问题是随着西雅图事件而进入学术界的研究视域的。几年来,学者们撰写了大量文章,对反全球化的含义、主体、实质等各个方面进行了深入的探讨,达成了一些共识,也出现了一定的分歧。对有关反全球化的这些基本问题进行梳理,有助于人们从不同角度和方位认识反全球化运动。  相似文献   

The effectiveness of a special school experience for improving preservice teachers’ efficacy to teach children with special educational needs and disabilities     

Janine K. Coates  Jo Harris  Michael Waring 《British Educational Research Journal》2020,46(5):909-928

Increasingly, preservice teachers are required to demonstrate their ability to effectively cater for the needs of a diverse range of learners, including those with special educational needs and disabilities (SEND). Higher education institutions (HEI) delivering teacher education programmes are responsible for promoting the development of inclusive practices. This multi-method study assessed the effectiveness of a special school experience for preservice teachers at one HEI in England. A total population sample of 48 preservice teachers completed self-efficacy questionnaires at three time points during their training; and 13 took part in qualitative semi-structured interviews towards the end of the study. Analysis of variance (ANOVA) findings from the questionnaire data showed that the experience had a significant positive impact on preservice teachers’ self-efficacy, improving knowledge, understanding and confidence to teach inclusively. A thematic analysis of the qualitative findings revealed that the experience challenged preservice teacher expectations about learners with SEND, developing understanding about learner needs and effective differentiation. This article concludes with recommendations for effective inclusion training for preservice teachers.  相似文献   

Reflection through assessment: A systematic narrative review of teacher feedback and student self-perception     

《Studies in Educational Evaluation》2020

Beginning with two important meta-analyses by Hattie and Timperley (2007) and Shute (2008), the relationship between teacher feedback and student self-perception has received more attention. One way students enact a self-perception is by reflectively writing about their participation within a particular field of study. The current review analyzes how teacher feedback facilitates and supports the formation of self-perception made visible in students’ reflective writing. The following electronic databases were searched up to February 2018: CINAHL, Academic Search Complete, PsycINFO, ERIC, ProQuest Dissertations and Theses, and Google Scholar. Five themes in total were constructed. These themes indicate contexts when feedback might lead to students reflecting through writing on a self-perception. Features of feedback that most likely promote this kind of reflection can be described as: content situated, dialogic, and empathic. As a secondary category of themes, feedback should position students as: fluid and/or vulnerable.  相似文献   

数字创新创业：研究新范式与新进展     

刘志阳  林嵩  邢小强 《研究与发展管理》2021,33(1):1-11

数字技术改变了传统创新创业的要素和流程以及组织管理的基本内容,催生了新的价值创造和分配途径。数字创新创业实践的大量涌现使学者们开始反思现有创新创业理论和方法的解释力和适用性。本文从数字创新创业的概念出发,对比分析了数字创新创业与传统创新创业的内涵特征,重点梳理了不同学科、产业以及流程视角下的现有数字创新创业研究主题,着重强调未来数字创新创业研究应该基于多学科交叉、多维度方法和中国情境应用进行深入拓展。  相似文献   

产业集群演进机制和竞争优势研究述评   总被引：18，自引：0，他引：18  

马刚 《科学学研究》2005,23(2):188-196

产业集群的演进机制和竞争优势作为当前区域经济和产业经济领域内的热点问题,引起了经济学界、管理学界的诸多关注和广泛探讨。本文首先对产业集群的基本内涵做一简要概述,然后基于此内涵从多个理论视角对产业集群的演进机制和竞争优势及其相关内容的研究现状和进展进行梳理、分析、比较和评述,以期有一个深入全面的认识,并为进一步的研究奠定基础,找准方向。  相似文献   

基础研究绩效评估综述   总被引：12，自引：1，他引：11  

赵丽娟 《科学学与科学技术管理》2005,26(10):44-48

通过对国内外有关基础研究绩效评估方面文献资料的分析,结合实际评估中存在的问题,着重从基础研究绩效评估的产生与发展、评估方法、评估指标体系的构建以及评估结果的利用方面对其进行评述。针对基础研究绩效评估中存在的问题,提出基础研究绩效评估的改进思路。  相似文献   

中美同行评议公正性政策比较研究   总被引：6，自引：0，他引：6  

龚旭 《科研管理》2005,26(3):1-7

同行评议是科学评价的重要方式,也是政府基础科学资助机构资源配置的主要方式之一,公正高效的同行评议是保证科学质量的基础。本文通过比较美国国家科学基金会(NSF)与中国国家自然科学基金委员会(NSFC)的同行评议公正性政策,分析其政策实施的背景和制度条件,进而提出改进NSFC评议公正性的建议。  相似文献