一种多功能电能表抄表器的设计

本文提出了一种能读取电感式电能表正反向计量数据的抄表器设计方案，采用该方案设计的抄表器不仅适用于普通居民家庭和企事业单位电能电度表的自动抄表，而且也适用于要求能计量反向供电的特殊用户。文中提出的方案已经取得了成功的应用，显示出其良好的推广前景。     

习题教学与学生素质的培养

由于各种原因，习题教学往往被认为是应试教育的附属品，其实在习题教学中包含着多方面的素质教育，问题在于我们如何对待。本文就习题教学中有关对学生的兴趣、思维能力、认知水平等素质的培养方面谈几点看法。     

乙炔的制取和化学性质微型实验的改进

简述了高中教材中乙炔的制取和性质实验的不足之处，给出了改进后的实验装置与实验步骤，并阐述了改进后的实验装置的特点。     

高温高湿环境对运动能力的影响

根据体育运动的开展情况来看,在高温高湿环境下,人体的运动能力会受到极大影响,需要确保环境温度与人体热平衡的协调性,才能真正达到体育锻炼的目的。文章就高温高湿环境对运动能力的影响进行分析,提出高温高湿环境下保持运动能力的有效策略,对于促进运动能力有效提高有着重要现实意义。     

Exploring the pedagogical features of integrating essential competencies of scientific inquiry in classroom teaching

ABSTRACT

Background: As inquiry-based instruction is not universally implemented in science classrooms, it is crucial to introduce instructional strategies through the use of contextualized learning activities to allow students with different background knowledge and abilities to learn the essential competencies of scientific inquiry and promote their emotional perception and engagement.

Purpose: This study explores how essential scientific competencies of inquiry can be integrated into classroom teaching practices and investigates both typical and gifted secondary students’ emotional perception and engagement in learning activities.

Sample: A case teacher along with 226 typical and 18 gifted students from a suburban secondary school at Taiwan participated in this study.

Design and methods: After attending twelve 3-hour professional development workshops that focused on scientific inquiry teaching, the case teacher voluntarily developed and elaborated her own teaching activities through the discussions and feedback that she received from workshop participants and science educators. Quantitative and qualitative data were collected through activity worksheet, questionnaire, video camera, and tape recorders. Frequency distribution, Mann-Whitney U test, and discourse analysis were used for data analyses.

Results: Case teacher’s teaching activities provide contextual investigations that allow students to practice making hypotheses, planning investigations, and presenting and evaluating findings. Students’ learning outcomes reveal that typical students can engage in inquiry-based learning with positive emotional perception as well as gifted students regardless of their ability level. Both gifted and typical students’ positive emotional perception of and active engagement in learning provide fresh insight into feasible instructions for teachers who are interested in inquiry-based teaching but have little available time to implement such instructions into their classrooms.

Conclusions: The results of our work begin to address the critical issues of inquiry-based teaching by providing an exemplary teaching unit encompassing essential scientific competencies     

Investigating pre-service teachers’ acceptance of Web 2.0 technologies in their future teaching: a Chinese perspective

In recent years, there has been an exponential growth of the explorations around the pedagogical use of Web 2.0 technologies in China. This study offers an alternate perspective by examining predictors of pre-service teachers’ uptake of Web 2.0 technologies for teaching purposes. On the basis of prior related research focusing on the pedagogical use of ICT, an eight-factor research model was hypothesised. Data were collected from two universities in China through a questionnaire (N?=?464). Structural equation modelling analysis results suggested that perceived usefulness, perceive enjoyment, subjective norm, technological pedagogical and content knowledge, and facilitating conditions had statistically significant direct effects on intention to use Web 2.0 technologies. The findings can help stakeholders in China (e.g. teacher educators, school leaders, and education policy makers) develop a better understanding of the realities of teachers’ pedagogical use Web 2.0 technologies in China.     

China Launched Manned Spacecraft Successfully

After 2 years of preparations, China has successfully launched its second manned spacecraft. On Wednesday morning, Shenzhou 6 blasted off from Northwest China＇s Jiuquan Satellite Launch Center.     

发展市场经济中的信用障碍问题

信用体系是市场经济存在的基石。市场经济中包括政府、企业、个人三大信用为主体建立的三个基础信用体系，而道德、产权、法律是社会信用制度的三个不同层面。我国在发展市场经济过程中不仅存在信用风险，而且存在信用障碍，所以要构建适应市场经济发展的信用体系。     

当代中国双重视野下的杜拉斯

杜拉斯在中国的文学接受和研究中具有特殊的地位。在20世纪80年代她的作品刚刚被介绍到中国的时候，是作为高雅文学而受到文化精英们赏识的。现在，她的作品却变成了商业性很强的产品，她的名字也变成了通俗文学的一个标志。杜拉斯在中国文化中已是一种蕴涵着文学品位、情趣意味的文化意象。文章旨在通过比较分析“学术界”和“大众”对杜拉斯的两种评价的兴趣重点、认识层次、评价尺度，总结出当代中国双重视野下对杜拉斯的不同理解和接受、阐释的原因。揭示出“精英文化”和“大众文化”之间有差异又有重合的这种当代矛盾现象。     

商业企业的SP促销策略初探

SP促销是现代市场营销宝库中使用最为广泛的一种拓展市场、促进销售的利器。SP促销对激励消费购买行为。增进销售。扩大营业额，提高企业知名度等方面有着独特的功效。只有认真研究SP促销的特点，灵活运用SP促销方式．才能更好地发挥SP促销在商业企业营销活动中的作用。