对大学体育教学过程师生互动问题的思考

体育教学中的师生互动的结构包括:师生互动的主体、师生互动的基础和条件、师生互动的过程、师生互动的结果。体育教学中的师生互动具有教育性、交互性和连续性、网络性、组织化和非正式化相结合、非对应性、系统性和综合性等特征。     

单纯性肥胖对青少年脑血流的影响

本实验观察了18名单纯性肥胖青少年和18名同龄正常非肥胖青少年多普勒脑血流。结果显示。单纯性肥胖青少年脑血流速度发生改变。但其脑血管顺应性和弹性仍然正常。     

影响高校女生体育教学质量的因素及对策

从生理、心理特点以及教材教法等方面对影响高校女生体育教学质量的因素进行分析,并提出相应的对策,为提高高校女生体育教学质量探索新思路。     

Design and development of VR learning environments for children with ASD

Basic social interaction and executing certain tasks can be difficult for children with autism spectrum disorder (ASD). The symptoms of such behaviour include inappropriate gestures, body language and facial expressions, lack of interest in certain tasks, cognitive disability in coordination of limbs, and a difficulty in comprehending tasks’ requirements. This paper will discuss our efforts to develop virtual learning environments for children with ASD to improve their gestures and their interests in comprehending tasks’ requirements. Virtual environments are ideal for imparting skills necessary for independence before encouraging children with ASD to try these out in the real world and gain real-life experience. A high-end solution and a simplified solution will be presented together with a discussion on their comparison study.     

Pressurizing the STEM Pipeline: an Expectancy-Value Theory Analysis of Youths’ STEM Attitudes

Over the past decade, there has been a strong national push to increase minority students’ positive attitudes towards STEM-related careers. However, despite this focus, minority students have remained underrepresented in these fields. Some researchers have directed their attention towards improving the STEM pipeline which carries students through our educational system and into STEM careers. Previous research has shown that expectancy-value theory (EVT) is useful for examining the short-term as well as long-term academic motivations and intentions of elementary age minority students. These findings provide insights into ways we may be able to potentially “patch” particular STEM pipeline leaks. In the current study, we advance this research by using EVT as a framework to examine the STEM attitudes of young students directly. We hypothesize that students’ academic-related expectancies for success and subjective task values will be associated with an increase in STEM attitudes. Data for this study was gathered over the course of a large-scale computing intervention which sought to increase students’ STEM interest. This computing intervention took place in an urban elementary school district located within the southeastern USA. Results from this study indicate that both intrinsic values and utility values predict students’ STEM attitudes but they influence attitudes related to the various dimensions of STEM differently. These findings demonstrate that EVT provides a useful framework, which can be integrated into future computing interventions, to help encourage positive STEM attitudes in young children, thus increasing the internal pressure (or flow) within the STEM pipeline.     

Curriculum Interventions for Area Measurement Instruction to Enhance Children’s Conceptual Understanding

This study examined the effectiveness of 3 curriculum interventions focused on strengthening children’s ability to solve area measurement problems and explored the instructional perspectives of the instructor who implemented the interventions. The interventions involved various degrees of emphasis on area measurement and knowledge of 2-dimensional geometry. Participants were 131 fourth graders, recruited from a city in northern Taiwan, and 1 instructor. The results confirmed the effectiveness of an enriched curriculum integrating knowledge of 2-dimensional geometry in enhancing children’s conceptual understanding of area measurement. The group that received the enriched curriculum outperformed the other groups that received the curricula stressing only 2-dimensional geometry or numerical calculations for area measurement in solving the area problems requiring mathematical judgments and explanations. The curriculum also facilitated children’s reasoning in distinguishing between the perimeter and area of a rectangle, which required higher-order mathematical thinking. Interview data revealed that approximately all children from the 3 intervention groups could identify the mathematical subject-matter components highlighted in the curricula. Interviewees tended to consider the use of formulae to solve area measurement problems to be important, despite some differences in learning gains among the 3 groups. In interviews, the participating instructor revealed a change of perspective regarding the importance of offering students opportunities for manipulation and geometric operations when teaching area measurement, prompted by curriculum enactment.     

基于BFT和CDS的集成供应链避险机制研究

本文从决策者的有限理性角度,指出了集成供应链风险管理者的金字塔式心理账户结构;据此,构建了基于BFT和CDS、以多心理账户行为证券组合理论为核心的集成供应链避险模型;因有限理性符合风险管理者实际情景,决定了本研究较传统避险分析更为逼近集成供应链的现实避险决策。     

大学生创业现状分析及发展对策

大学生创业成了社会的新亮点，他们有思想有激情．但他们缺乏经验，缺乏资金．缺乏相应的心理准备；国家重视，宏观引导；在创业链上进行优化；提倡创业观念，培育创业文化．加强创业教育和创业基地建设；为社会持续创造价值，为大学生创业公司提供更多的融资机会和成长机会，促进大学生创业的成功。     

热力循环及总能系统学科发展战略思考

热力循环与总能系统是本世纪能源与环境科学的主要议题之一,也是在国家中长期科技规划中位于优先领域的需要关注的重点。本文分析了该学科的地位和作用,指出了学科交叉的发展特点,提出了学科发展方向:能的梯级利用与热力循环创新、能量释放的新机理、中低温能源转换利用与正逆耦合循环、多能源综合互补系统、控制污染排放的新途径。本文提出的热力循环与总能系统发展战略旨在开辟节约能源、能源与环境协调发展的新方向。