Using Cooperative Learning Strategies to Cultural Background Teaching in College English

The aim of this innovation project is toconduct a pilot by employing cooperative learning strategies, peer assessment and self-assessment in the process of teaching cultural background in College English Integrated Course to change teachers' role as a dominator as that to explore a feasible yet effective way which will help students to learn the cultural background and obtained some cognitive progress in performance and achievements. According to the findings obtained from the survey, we can see that by employing of the cooperative learning strategy, students' enthusiasm, participation and learning effectiveness have been greatly enhanced. What's more, the application of cooperative learning strategy in teaching cultural background not only motivated students, enhanced students' critical thinking but also reduced teachers' heavy workload. It is a win-win situation both for teacher and the students.

中日石油管线竞争的经济与战略博弈分析

本文以中日石油管线竞争为例,应用博弈理论分析中日油气之争的起因,阐明中日对俄罗斯远东石油竞争的经济和战略背景。说明这种竞争的不可避免性和非合作性并预计在更广范围将影响到我国海外能源战略。

利用切比雪夫不等式的背景建模算法

针对运动目标检测问题中的背景建模问题,提出一种结合切比雪夫不等式和核密度估计的背景建模方法。首先利用样本均值与样本方差及切比雪夫不等式,快速计算各像素点属于前景和背景的概率,判别出前景点、背景点及可疑点。对可疑点再利用核密度估计方法,估计其属于前景与背景的概率密度来进行背景前景判别,最后通过设定阈值完成实时背景建模。实验结果证明,利用切比雪夫不等式能快速区分有明显特征的前景点与背景点,采用背景更新算法能得到理想的背景图像,降低了背景图像提取的误差,显著地提高了背景建模的速度。