Making Science Vivid: Using a historical episodes map

Many have argued that the inclusion of the history of science in science teaching might promote an understanding of the nature of science as well as the attitudes toward science. However, its inclusion in science teaching may not have the desired effect due to the limited coverage it receives in textbooks and the limited time available for teaching. A historical episodes map (HEM) is thus developed with four storylines and more than 20 events related to the history of science and is designed to fit in with regular teaching topics. A total of 329 students in Grade 7 were involved in the experimental group and the control group. The control group was taught using the textbook only, while the experimental group was also taught using the textbook plus HEM materials and associated discussion. The intervention of such teaching lasted for a month and a half. The findings reveal that the exposure of students to HEM materials did promote the students’ understanding of the nature of science as well as their attitudes toward science.     

一种新的灰色马尔科夫预测模型及其应用

以奥运会奖牌数预测的实际问题为背景,结合灰色系统理论与马尔科夫预测的相关理论与方法,提出了一种新的奥运会奖牌数预测的灰色马尔科夫预测模型,从而为未来奥运会奖牌数预测提供了一种有效的方法。     

民族地区高校大学生适应现代生活方式新探

生活方式是人类社会发展变化的标尺,民族地区传统生活方式向现代生活方式的转变是社会的进步,适应了社会发展的规律。现代生活方式是社会化大生产背景下的产物,物质生活的富裕往往造成了人文精神和人类自身的迷失,严重的影响到当下年轻人精神与自控能力。民族地区社会转型时期。大学生怎样适应现代生活方式是民族地区高校思想政治教育的重要课题。     

加强实验室安全管理,促进平安校园建设

通过对高等学校实验室安全事故成因的梳理,分析当前学校所面临的实验室安全问题。结合北京工业大学实验室安全管理的工作实践,积极研究探索适应新形势下的实验室安全管理的可行性对策,保证学校实验教学与科研工作的安全有序进行,促进平安校园建设。     

PLC技术及其发展研究

本文介绍了电力线通信技术的概念及优缺点,分析了电力线通信中特殊的技术问题,以及现代电力线通信的应用现状与发展前景。     

基于SPI总线的三相电能表的设计

本文提出了一种采用专用电能计量芯片CS5460A的三相电表系统,利用CS5460A进行电量采集,P89LPC932做数据处理,通过Serial Peripheral Interface(SPI)端口传送电流、电压、有功、无功等实时测量值,并用以太网控制器ENC28J60实现以太网通信,还能配合上位机显示,对电能进行集中管理.由于采用SPI总线通信,只须四条线,不仅节省了I/O口线,而且大大简化了电路设计.     

事件动态

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