Stereotype threat and gender differences in chemistry

Stereotype threat theory (STT) offers one explanation for achievement differences in math and science for both women and minority students. Specifically, STT posits that the perceived risk of confirming a negative stereotype about an individual’s identity group acts as a psychological burden that negatively impacts performance. This study examined the impact of stereotype threat (ST) on gender differences in chemistry achievement, self-efficacy, and test-anxiety using a four-group, quasi-experimental design. 153 introductory-level college chemistry students were randomly assigned to one of four ST conditions including an explicit ST condition, an implicit ST condition, a reverse ST condition, and a nullified condition. Results indicated that there were no gender differences by ST condition; however, overall, the men had higher self-efficacy and lower test-anxiety than the women. An analysis of open-ended questions asking students about their intent to major in chemistry, beliefs regarding barriers to their achievement on the chemistry test, and gender differences in opportunities and mental capacity to achieve in chemistry provided insight into the quantitative results. Implications of our findings for future research on ST are discussed.     

大都市边缘区域耕地数量变化的时空特征及动力机制——以广州市花都区为例

土地利用/土地覆盖变化已成为全球变化研究的核心领域和热点问题之一，其中大都市边缘区域耕地变化研究意义尤为重大。本研究利用广州市花都区近30年来的普查、更新调查和逐年统计数据，结合卫星影像资料和实地调研，在深入分析耕地数量变化时空特征基础上，重点对耕地变化影响因子进行灰色关联分析，揭示出：工业化及产业结构调整、人口增长及城市化分别构成全区耕地减少的第一、二驱动因子，经济对外开放对耕地数量变化的影响力不断加强，土地政策、土地规划、经济政策和行政区划等制度因子亦对耕地数量周期性变化产生重要影响。研究认为综合运用耕地保护管制和经济调节手段、建立土地资源节约型产业结构体系、加强建设用地规划与整理整治、促进集约用地和内涵式发展等是大都市边缘区域耕地变化调控的主要路径。     

《尘埃落定》傻子形象与藏族机智人物阿古顿巴比较

阿来《尘埃落定》中的傻子少爷形象借鉴了世界文学中类似人物的精神品质,但却与藏族口传文学中的民间智慧人物阿古顿巴有着直接的传承关系。与此同时,傻子少爷与阿古顿巴之间又存在较为显著的文化差异或时代变异。而这种传承与变异无疑都是与阿来的民族文化身份与新的写作语境息息相关的。     

国家自然科技资源共享平台安全保障措施研究

本文从八大类自然科技资源共享过程中面临的五大共性安全问题，即共享程度、实物安全、数据信息安全、网络安全和交易安全问题出发，分别从问题阐述、现有安全保障措施支撑能力分析、安全保障措施构建三方面进行论述。     

广东省旅游业“滑坡”现象分析及出路

分析了当前境内、外旅游市场的特点和潜力,认为:要重视国内游客市场;境外游客中,港、澳、台和到港、澳的外国游客仍是广东境外客源市场的最大部份。必须树立旅游市场形象,开发新的、富有特色的旅游资源,发展短线旅游,整顿旅游市场和加强旅游宣传招徕工作。     

郴州市校园集体舞开展现状的调查研究

运用文献资料、问卷调查、访谈、数理统计等方法时郴州市城区中学校园集体舞开展现状进行了调查研究.结果表明;开展现状很不乐观,概括原因有学校学校领导和教师不够重视、集体舞教师教学能力欠缺、学生学习态度欠佳、场地不足,家长和教师的担忧及舞种太少等.针对各方原因进行了分析并提出建设性建议,旨在促进郴州市乃至湖南省中学校园集体舞...     

利用新兴通讯工具 创新学生管理方法

QQ、微博、微信、陌陌等新兴通讯工具,不但带来了人与人之间交流、沟通方式的变化,也在人们的广泛参与中形成一些公共空间,在大学生中颇受欢迎。因此,利用QQ、微博、微信、陌陌、电子邮件、飞信等新型交流、互动、娱乐、传播工具中形成的公共话题,与学生全面沟通,在开放、平等、公共、批判、多元的媒体通讯中,适时引导,从而更好地发挥辅导员的职责功用,是创新学生管理方法的重要手段。     

Automatic recommendation system based on hybrid filtering algorithm

Education and Information Technologies - Web recommendation systems are ubiquitous in the world used to overcome the product overload on e-commerce websites. Among various filtering algorithms,...     

Teacher–Student Interactions in Korean High School Science Classrooms

This paper provides a preliminary picture of teacher–student interaction in Korean senior high schools. In order to do this, the Questionnaire on Teacher Interaction (QTI) was translated into Korean and administered to 439 students (99 science-independent stream students, 195 science-oriented stream students and 145 humanities stream students). Based on the results from this survey, interviews with some students and teachers were also carried out and three science classrooms were also observed. It was found that the teacher–student interactions in Korean senior high school science classrooms reflect the general image of the youth-elder relationship in society as well as the senior high school's unique nature – portraying a scene of directing teachers and obeying students. It was also found that students experience unique interactions in their science classrooms with their particular teachers. It was considered that this difference comes from the overlapping of a teacher's personal characteristics with the nature of a stream (e.g., curriculum, expectation towards the students in that stream). This article reports part of a larger study conducted with Korean senior high school students and teachers. The aim of the main study was to investigate three different aspects of the high school science classroom environments in Korea, namely, the degree of implementation of constructivism, the pattern of teacher–student interactions, and the learning environment in laboratory classes. Based on the realisation that teacher–student interactions have not been systematically dealt with especially at the senior high school level in Korea, this article pays particularly attention to this aspect. The intention was also to provide useful insights for improving the current situation in senior high school science classrooms in Korea.     

呼吸方法在长拳套路演练中的运用

在长拳套路演练中,如何正确运用长拳的呼吸方法,理解呼吸方法对长拳套路演练所产生的影响,并提出"提、托、聚、沉"这几种不同的呼吸方法,及其这几种呼吸方法在长拳套路演练中的合理运用,长拳套路演练中,合理地分配、调节自身的体能有着重要意义.