论文化教学及其变量在大学英语教学中的实践

外语教学离不开文化教学.文化教学有其完整的内容体系,在大学英语教学中,通过充分发挥文化教学相关变量的作用,使语言与文化教学有机融合在一起.     

战略环境变迁与国家利益界定——中国国际角色的思维革新

本文以战略环境变迁为分析背景,通过分析新时期中国国家利益界定与维护所出现的新情况,探究中国国际角色应具有的思维革新.本文把中国国家利益分为国内和国外两个变量,提出了经济发展、两岸统一、社会凝聚力和政权合法性建设、引导国民健康的历史观与大国心态、周边安全和领土收复、国家形象建设、海外利益维护等七项利益.在此基础上,根据中国所处的战略环境,将其划分为核心利益、根本利益、重要利益三个层次,并指出了利益维护所应注意的问题.在结论中,本文也提出了在国家利益界定与维护以及学术研究上需进一步重视的问题.     

An analysis of school pupils’ (with low social economic status) perceptions of university,regarding programmes of study

Through its “Aim Higher Project” and “Excellence Challenge Programmes”, the UK government is investing large sums of money into widening participation so that more school leavers stay on to study for higher education (HE) courses, especially those from lower social classes and ethnic groups. Universities are increasingly developing links with local schools and creating novel ways of enhancing these relationships. Nevertheless, as the costs of attending university rise, it may be difficult to widen access especially amongst those “less wealthy” young people which universities are desperate to attract and enrol, due to the more lucrative government funding that the universities will receive. The main aim of the research is to report research findings from a case study incorporating Year 11 pupils (n = 38) from an inner city school (placed second on the Aim Higher register for the most socially disadvantaged), focusing in the main on the programme of study. This exploratory work is longitudinal with the researcher entering the Roman Catholic High School every two weeks during the academic year (over a period of nine months).     

上证指数收益率的月度效应研究——基于含虚拟变量的GARCH模型

股票市场中的月份效应,是违反市场有效性的异常现象之一,主要表现为某些月份的股票收益率显著高于或低于其他月份的收益率。本文主要研究上证股市的月度效应,以2005年至2014年间的有效交易日为样本日期,选取上证指数的收盘价,运用包含虚拟变量的GARCH模型来研究上证股市是否存在月度效应。通过实证研究表明,上证股市存在月度效应,即一年内一、二月的月平均收益率较高,六月份的月平均收益率较低。最后结合我国的实际情况给出上证股市收益率存在月度效应的原因。     

教师变量对小学四年级数学成绩的影响:一个增值性研究

以房山区42所小学的1238名四年级学生和42名数学教师为研究对象,以四年级下学期的数学测验成绩为因变量,四年级上学期的数学测验成绩作为协变量加入两水平线性模型中建立基础增值模型.在控制学生背景变量的条件下,考察教师的特征变量、教学方式和教师培训三个方面对小学生四年级数学学业成绩增长的影响.结果显示,教师的特征变量中,教师的性别、年龄、教龄和学历专业对学生学业成绩的增长无显著影响,而教师的职称和最终受教育水平则对学生学业成绩的增长有显著影响;与教学相关的变量中,是否参加过新课程培训这一变量对学生学业成绩的增长有显著影响.     

牛顿冷却定律在微分方程中的应用

可分离变量的一阶微分方程是一类特殊的一阶微分方程,它在实际中有着广泛的用途。通过两个案例的阐述讨论了牛顿冷却定律在可分离变量微分方程中的应用,让学生感受所学数学知识的实用价值。     

Gait variability and symmetry in world-class senior and junior race walkers

The aim of this study was to analyse gait variability and symmetry in race walkers. Eighteen senior and 17 junior athletes race walked on an instrumented treadmill (for 10 km and 5 km, respectively) at speeds equivalent to 103% of season’s best time for 20 km and 10 km, respectively. Spatio-temporal and ground reaction force (GRF) data were recorded at 2.5 km, and at 4.5, 6.5 and 8.5 km for a subsection of athletes. Gait variability was measured using median absolute deviation (MAD) whereas inter-leg symmetry was measured using the symmetry angle. Both groups showed low variability for step length (<0.9%), step frequency (<1.1%), contact time (≤1.2%) and vertical peak force values (<5%), and neither variability nor symmetry changed with distance walked. Junior athletes were more variable for both step length (P = 0.004) and loading force (P = 0.003); no differences for gait symmetry were found. Whereas there was little mean asymmetry overall, individual analyses identified asymmetry in several athletes (symmetry angle ≥ 1.2%). Importantly, asymmetrical step lengths were found in 12 athletes and could result from underlying imbalances. Coaches are advised to observe athletes on an individual basis to monitor for both variability and asymmetry.     

物理概念教学浅见

本文据当代认知心理学、教育心理学的原理较系统地阐述了关于物理概念教学的方法：（1）区别对待不同类型的概念和学习者;（2）充分发挥变式、比较定义的积极作用;（3）在实践中运用概念;（4）形成概念体系．这对改进传统物理概念教学具有重要意义．