Developing Environmentally Responsible Behaviours Through the Implementation of Argumentation- and Problem-Based Learning Models

Research in Science Education - The purpose of this research is to investigate the effect of using argumentation and problem-based learning approaches on the development of environmentally...     

Search for Symbol Sense Behavior: Students in Upper Secondary Education Solving Algebraic Physics Problems

Research in Science Education - Students in upper secondary education encounter difficulties in applying mathematics in physics. To improve our understanding of these difficulties, we examined...     

《搜神记》“动物报恩”故事来源与演变

魏晋南北朝时期的志怪小说在佛教的影响下形成了一系列新的故事类型。《搜神记》中的＂动物报恩＂故事直接来源于佛经＂动物报恩＂故事,又接受了本民族文化的合理改造。它的产生受到佛教观念、本土朴素道德标准和传统财富、爵位观念的共同影响。     

What's in It for Me? Incentives,Learning, and Completion in Massive Open Online Courses

This study investigated the distribution of incentives (e.g., certificates, badges) for massive open online course (MOOC) completion, and relationships between incentives and MOOC outcomes. Participants were 779 MOOC students internationally who participated in at least 303 different MOOCs offered by at least 12 providers. MOOC participants most commonly intended to receive, and in actuality received, free and paid course certificates of completion; other incentives (e.g., digital badges, postsecondary credits) were far less common. In addition, MOOC participants' intentions to receive both free and paid certificates were consistently and positively related to perceived learning and course completion, net other factors. (Keywords: massive open online courses, MOOCs, motivation, incentives, microcredentials, certificates of completion)     

试论企业集团产生和发展的动因

自20世纪80年代以来，我国学者对企业集团的理论建设进行了一些有益探讨，但是他们大都没有跳出科技的交易成本分析框架。交易成本分析实际上只是一种静态分析方法，仅能在既定条件下分析各商业交易主体的哪些商业交易应当选用企业集团内部市场来组织、哪些商业交易又应当选用企业外部市场来组织或企业内部市场来组织，但无法揭示在动态条件转产发展的深层原因，因而使用这一分析框架所得出的结论都不可避免地带有一定的局限性。如果将垄断和竞争因素以及专业化因素引入交易成本分析框架，就能较好地理解企业集团的产生和发展。     

A Cross-Age Study of the Understanding of Three Genetic Concepts: How Do They Image the Gene, DNA and Chromosome?

The study was carried out with 175 Turkish students by using drawings at different ages understanding of gene, DNA and chromosome concepts. Students from 8th, 9th, 11th grades and, science and biology student teachers were simply asked to draw the structure of gene, DNA and chromosome in a cell and also to give explanations about these three concepts. Differences in understanding between the age groups were found to be significant for the concepts of gene and DNA. None of the groups exhibit sound understanding and regardless of the age levels, students in all groups had alternative ideas about the three concepts investigated.     

高职院校教学管理工作的探索

在新世纪新形势高职院校教学管理工作有新的要求; 目前高职院校在教学管理中存在的问题; 加强高职院校教学管理工作的建议和措施。     

540MPa级高强度滚型车轮用钢的研制与应用

通过在碳锰钢的基础上添加Nb微合金化元素,成功开发出珠光体占10%的铁素体＋珠光体组织的高强度车轮用钢,该钢钢质纯净、晶粒细小、强度高、成形性能优良,已成功应用于轿车轮辋制造。     

PCL一839卡在FDM位置控制系统的应用研究

概述了FDM位置控制系统和PCL一839卡的特点,并详细介绍了如何在FDM位置控制系统中应用PCL一839卡,包括硬件连接和软件的设计。