An analysis of the nature of classroom activities: A comparative study of an immersion English class and a non-immersion English class in the mainland of China

This study was designed to investigate the nature of activities in an immersion English class and a non-immersion English class in the mainland of China, and to find out the differences between these two types of class through data gained from observation and interviews. Spoken discourse analysis was used to analyze the data, where Engeström??s activity complex system was used as the analytical framework to examine the nature of activities in the two types of classes. The results showed that it is the dynamic and situated nature of activity that makes a difference between the activities in these two classes. The interaction among the activity components, the social relations emerging through the process, the use of target language as the main mediational tool, and the subject content revealed in the activities enhance our emic understanding of the nature of activities. Implications can be drawn for English language teaching and for students?? English language learning for the schools in the mainland of China. This study contributes to both immersion education and classroom interaction.     

Wearable skin-like optoelectronic systems with suppression of motion artifacts for cuff-less continuous blood pressure monitor

According to the statistics of the World Health Organization, an estimated 17.9 million people die from cardiovascular diseases each year, representing 31% of all global deaths. Continuous non-invasive arterial pressure (CNAP) is essential for the management of cardiovascular diseases. However, it is difficult to achieve long-term CNAP monitoring with the daily use of current devices due to irritation of the skin as well as the lack of motion artifacts suppression. Here, we report a high-performance skin-like optoelectronic system integrated with ultra-thin flexible circuits to monitor CNAP. We introduce a theoretical model via the virtual work principle for predicting the precise blood pressure and suppressing motion artifacts, and propose optical difference in the frequency domain for stable optical measurements in terms of skin-like devices. We compare the results with the blood pressure acquired by invasive (intra-arterial) blood pressure monitoring for >1500 min in total on 44 subjects in an intensive care unit. The maximum absolute errors of diastolic and systolic blood pressure were ±7/±10 mm Hg, respectively, in immobilized, and ±10/±14 mm Hg, respectively, in walking scenarios. These strategies provide advanced blood pressure monitoring techniques, which would directly address an unmet clinical need or daily use for a highly vulnerable population.     

办公建筑孔洞设置对工业厂房通风优化模拟研究

基于计算流体力学CFD软件,建立了数值模型,并对工业厂房的风环境进行了模拟,分析了办公建筑不同的孔洞开启方案对工业厂房通风的影响。研究结果表明:倾角为60°的倾斜孔洞和中心高度为12m的孔洞可以使工业厂房通风效果达到最佳状态。在此基础上,优化了孔洞的设置方式,并结合模拟进行了验证,为工业厂房类建筑通风设计提供决策参考。     

论高级技工学校专业英语课程的复合型管理

本文以高级技工学校专业英语课程的复合型管理为理念,对高级技工学校专业英语课程的特点进行阐述并对现行的专业英语课程管理的利弊进行分析。在此基础上,对专业英语复合型管理的概念及途径进行论述,进一步阐明在高级技工学校专业英语课程复合型管理的意义,以期达到对高级技工学校外语课程的全面构建与管理。     

影响大学生英语写作的几种文化因素

一、几种文化因素的分析与例证(一)语言表达差异因素。每一种语言的表达方式都有其文化的内涵。这种文化的内涵反映了同一种文化中的人们的共同习得。也就是说,不同的文化有其不同的语言表达方式。这种语言表达的差异性正是我们在英文写作时必须注意和必须学会正确使用的地方所     

一个微分系统的奇点的Hamilton量比较方法

应用微分方程定性理论及分支理论分析Z6 等变系统的奇点及其Hamilton,并给出怎样比较Hamilton量大小的一种方法     

对当今社会道德滑坡及德育滞后的原因分析

在市场经济条件下，由于历史原因以及改革开放带来的某些负面影响，国人的人生观、价值观受到了极大的冲击和影响，出现了道德沉沦、观念模糊、信仰危机等一系列人格异化现象，而德育工作的槽对滞后则对道德滑坡无能为力。本文试就社会道德滑坡和德育滞后的原因作一分析。     

《反对本本主义》:毛泽东思想形成的主要标志

所谓毛泽东思想的形成是指毛泽东思想的基本形态，也就是其主体部分和“活的灵魂”已经形成。从这一判断标准出发，在详细考察以毛泽东为代表中国共产党人的革命活动和理论贡献的基础上，可以看出《反对本本主义》的发表标志着毛泽东思想已基本形成。     

科技学术期刊青年编辑培养对策探讨

针对新时期科技学术期刊青年编辑成长的心路历程,将其划分为4个阶段,即新奇阶段、功利阶段、责任阶段和兴趣阶段.根据编辑部人才培养实践及青年编辑成长体会,探讨新时期青年编辑培养的对策.     

科技学术期刊微信公众平台问题分析与影响力提升策略

移动互联网时代智能终端的普及和微信的快速发展,给科技期刊带来了新的机遇和挑战.通过分析目前科技期刊微信公众平台存在的问题,提出利用微信公众平台基于优质内容、精准推送、服务意识、传播分享这4个方面的策略来提升科技期刊影响力.认为随着科技期刊数字化建设的发展,社交新媒体将与科技期刊融合发展.