溶液体积测量不确定度评估中ΔV=VβΔt公式的质疑

为了考察体胀公式ΔV=VβΔt应用的合理性,分别用体胀公式和导出的准确算式计算了水溶液和常见有机溶液的温变体积差,并于国标值进行了对照。结果发现,体胀公式对水溶液的计算结果大多存在不可接受的误差,而有机溶液与准确算式基本一致,表明体胀公式只适用于有机溶液而不适合水溶液,原因是有机溶剂的密度随温度的变化成线性而水不是。为使体胀公式适合于水溶液,通过对水溶液的温度-密度曲线进行乘幂线性化改造而修正的体胀公式,可得到与准确算式和国标基本一致的结果。     

“竹帘”背后的中国——1949-1971年《时代》周刊的中国报道评析

1949.10.1-1971.4.9《时代》周刊的报道中所呈现的中国,是一个极度负面的＂风雨飘摇的邪恶帝国＂的形象,这一形象与中国的实际情况相距较远,其报道存在比较明显的不准确和片面的成分。导致这一时期《时代》周刊对中国的报道不太客观公正的原因主要有二：一是其持有强烈的＂反共主义＂意识形态;二是其将中国视为严重威胁美国国家利益的敌人。     

试论学习环境及其数字化——一种教学论的视角

为了探寻一条可操作的学习环境设计途径,本文通过分析得出了学习环境的本质是要对学习活动提供保障的观点,尝试从教学论的视角出发,将教学环境对学习活动的六大保障要素视为教学论视角下的学习环境,并从组成结构的完备性方面同国际上公认的学习环境要素观进行了耦合性分析,阐释了观点的完备性,提出了从六大保障要素着手设计学习环境的新途径.此外,在信息技术应用于教学的背景之下,本文提出了学习环境数字化的问题,认为学习环境的数字化是一种技术应用的高级方式,具体手段包括构建纯粹的数字化学习环境和混合的数字化学习环境,后者是一种更复杂、更高级的手段.通过分析技术应用观的历史变迁以及ACOT的成功案例,本文提出了学习环境数字化要树立一种"技术方式观",并以改善学习品质为目标.     

汉代美学二题

汉代美学的整体特点在于它的过渡性质,阴阳五行学说将此前的阴阳说与五行说融为一体,提供了一个包括对中国古代艺术影响很大的宇宙观;汉儒的《乐记》、《诗大序》则分别对先秦儒家的音乐与诗歌美学作了总结,提出了对后世影响很大的“以道制欲”“以理节情”的审美规范。     

大学生入党动机调查与分析

当前大学生的入党动机可以分为主动型、被动型和模糊型,应客观地看待大学生的入党动机现状,分析不端正的入党动机产生的原因,采取有效对策,引导大学生树立正确的入党动机.     

温州中小民营企业社会责任的调查与分析

中小民营企业社会责任缺失,直接影响了企业的可持续发展。通过对温州285家中小民营企业社会责任进行随机调查,结果表明,存在企业社会责任意识淡薄、认知度偏低、理念滞后、行为受企业财务目标影响大、外部监管机制缺失等问题。因此,需要建立健全企业社会责任外部监管机制,提升企业社会责任内部效应,促使温州中小民营企业自觉履行社会责任。     

提高高校教师教育技术应用能力的研究

如何利用现代教育技术来实现教育的最优化?高校教师在应用其过程中必须认识到这是一个系统工程。就如何科学应用现代教育技术,从5个方面提出一些意见和建议。     

Measurement invariance of the ICT engagement construct and its association with students’ performance in China and Germany: Evidence from PISA 2015 data

The present study investigated the factor structure of and measurement invariance in the information and communication technology (ICT) engagement construct, and the relationship between ICT engagement and students’ performance on science, mathematics and reading in China and Germany. Samples were derived from the Programme for International Student Assessment (PISA) 2015 survey. Configural, metric and scalar equivalence were found in a multigroup exploratory structural equation model. In the regression model, a significantly positive association between interest in ICT and student achievement was found in China, in contrast to a significantly negative association in Germany. All achievement scores were negatively and significantly correlated with perceived ICT competence scores in China, whereas science and mathematics achievement scores were not predicted by scores on ICT competence in Germany. Similar patterns were found in China and Germany in terms of perceived autonomy in using ICT and social relatedness in using ICT to predict students’ achievement. The implications of all the findings were discussed.     

Closing the Gap: Fostering Successful Research‐Practice Partnerships in Counselor Education

Research‐practice partnerships offer counselor educators an opportunity to generate scholarship that can promote client welfare and create systemic change in practice and policy. The purpose of this article is to articulate strategies for building and sustaining research‐practice partnerships, as well as suggest methods for evaluating these partnerships.     

New Professional Farmers’ Training (NPFT): A multivariate analysis of farmers’ participation in lifelong learning in Shaanxi,China

International Review of Education - With urbanisation, rural-urban migration has meant falling levels of rural labour, loss of agricultural land and lowered agricultural productivity, all of which...