Environmental Education as Critical Education: how teachers and students handle the challenge

Previous research studies suggest that environmental education for social change has to be considered as critical education rather than as nature study. In a participatory research approach, classroom projects with teacher teams in five senior high schools were initiated and in‐service seminars were offered. A theorising debate about environmental education resulted in a critical environmental education concept based on human action in local social systems and the questioning of the norms and value judgements of the people concerned. Classroom projects were analysed with respect to locally constructed critical knowledge and in view of the teaching/learning culture. This study shows that teachers are most concerned about ways of handling a complex and value‐laden process. It is concluded that reflection on processes and methods is essential if teachers are to understand their students’ critical exploration of social issues.     

Scientific Understanding,Control of the Environment and Science Education

The concerns of this paper are two-fold. First, the paper addresses the allegation made by the indigenous science movement that violence is evident in the control of nature because science is inherently violent. This charge, if not refuted, undermines the claim that science is neutral. Next, the article considers the shortcomings of a school science curriculum based on traditional social values of control.     

浅谈体育实验中心的建设模式与管理

论述了如何建好、管好体育实验室的设想。作者认为,建立并完善实验中心的模式,是提高实验室管理水平切实可行的方法。     

The Effects of Trainee Characteristics on Training Effectiveness in Improving Organizational Performance

Despite the existence of many comprehensive and user‐friendly guides to evaluate training programs, most practitioners have had difficulty assessing training effects on corporate outcomes. Research revealed that trainees, organizational, and training‐related factors might influence the effectiveness of training in terms of organizational performance. The current study examines the effects of trainee characteristics among those factors, specifically what kind of trainee characteristics could affect training effectiveness in terms of job performance in a company. In addition, telephone surveys were conducted to aid in understanding of the reasons for leaving and high turnover of company personnel. The current and terminated employees who went through training programs in the company differed when considering previous sales experience in years and type of sales experience as trainee characteristics factors, with those still employed having a statistically higher average number of years and a higher rated type of sales experience. The current employees demonstrated higher job performance. The implications of these results on the attainment of training effectiveness as well as the selection decisions in the organization are discussed.     

技术创新中的职能分工

技术创新过程中创新职能的分工导因于市场交易效率的改进与固定学习费用的增加。职能分工经济来源于企业对重复的固定学习费用的节约。当今全球技术创新中新趋势的出现与市场交易效率的改进导致创新职能分工不断深化,使得以技术导入为基础的创新日趋重要。     

Student Motivation and Internet Technology: Are Students Empowered to Learn Science?

The Kids as Global Scientists (KGS) project engages students in the study of atmospheric science through the use of current imagery and on‐line communication in a reform‐minded, inquiry‐based curricular program. This article presents case study data on one sixth‐grade classroom of KGS participants during the 8‐week program. Six students representing three motivation levels were selected for intensive study to help illustrate how different students view learning science and the use of technology both before and after a technology‐rich program. Pre‐ and postassessment scores were analyzed for the entire class, and the six students' comments from individual interviews served as one example of voices for each motivation group. Results indicated that students made significant gains in weather content knowledge as measured by written assessments, and interviews revealed a high level of student motivation and satisfaction with the project. We conclude with a discussion of the program characteristics we believe are important for creating a learning environment that fosters the motivation and achievement we observed. © 2000 John Wiley & Sons, Inc. J Res Sci Teach 37: 459–479, 2000.     

国家创新型城市评价指标体系研究

本文提出了国家创新城市的评价指标体系、国家创新型城市建设阶段和若干政策建议。指标体系包括创新体系、创新基础条件、创新资源集聚、创新效率、创新效益、创新支撑引领功能、创新辐射示范作用7个方面共41个指标,一些指标均设置了阈值。我国应先选择一批创新基础好的城市进行试点,加大对试点城市自主创新基础能力建设的投入,"先行先试"税收优惠、政府采购等政策,并要加强对国家创新型城市的评价,试点的创新型城市也要努力改善创新创业环境,将产业结构优化升级转移到依靠自主创新上来。     

基于Atmega64的CAN转IIC通讯系统

文章介绍了一种CAN转IIC通讯系统设计。该系统使用Atmega64作为主控芯片,并使用SJA1000独立CAN总线控制器和TJA1050高速CAN收发器组成CAN接口,系统的主要作用是完成上下层系统的通讯连接。本系统通过实际的验证,通讯正常。     

An integrated microfluidic cell array for apoptosis and proliferation analysis induction of breast cancer cells

In vitro sensitivity testing of tumor cells could rationalize and improve the choice of chemotherapy and hormone therapy. In this report, a microfluidic device made from poly(dimethylsiloxane) and glass was developed for an assay of drug induced cytotoxicity. We evaluated the apoptotic and proliferation-inhibitory effects of anticancer drugs mitomycin C (MMC) and tamoxifen (TAM) using MCF-7 breast cancer cells. MMC and TAM both induced apoptosis and inhibited proliferation of MCF-7 cells in a concentration-dependent manner. MMC caused the expression of antiapoptotic protein Bcl-2 a dose-dependent reduction in MCF-7 cells. The expression of Bcl-2 did not change significantly in MCF-7 cells treated by TAM. The results in the microfluidic device were correlated well with the data obtained from the parallel experiments carried out in the conventional culture plates. The developed microfluidic device could be a potential useful tool for high content screening and high throughput screening research.     

我国男子跆拳道技战术发展现状及对策研究

我国男子跆拳道面临着外国选手进步快、世界水平越来越高、技术粗糙、自身经验不足、缺乏高质量陪练等一系列困难,经过努力,自2007年以来水平上升较快,建议今后从研究规则、密切关注技战术发展方向、狠抓细节技术、增强选手自控能力和专项体能、多参加高水平比赛等方面入手进一步增强运动员竞争力。