体育系学生能力培养初探

文章把体育教学分为几个紧密联系的组成部分,按照各部分的要求,紧密结合实际,多种形式、多种渠道,把所学的理论运用于实践,使学生在实践中获得更丰富的理论知识,在整个教、学、实践、经验总结、进一步学习的过程中提高体育系学生的能力水平,达到体育教学的目的。     

血清肌酸激酶、血尿素氮对武术套路运动员赛前训练监控的应用研究

为探讨血清肌酸激酶、血尿素氮对武术套路运动训练监控的可行性 ,对 2 4名武术套路运动员赛前训练负荷进行了指标的测试。结果表明 :在周大负荷训练后血清肌酸激酶活性升高显著 ,可作为评价武术套路运动员训练负荷的敏感性指标 ,而血尿素氮含量升高并不明显 ,表明血尿素氮对武术套路运动员训练负荷的监测敏感度不高 ;在大强度间歇训练后 ,运动员血清 CK活性显示 ,院队各组比专项班各组升高显著、且恢复慢 ,各组内男子比女子升高幅度大 ,说明 CK活性的变化也受性别的影响 ,血尿素氮含量说明 4个整套的负荷量较大。提示 :教练员在提高强度的同时严格控制负荷量 ,绝对不能出现量和强度同步增加的情况 ,以免运动员机体出现过度疲劳。     

COGNITIVE LOAD FOR CONFIGURATION COMPREHENSION IN COMPUTER-SUPPORTED GEOMETRY PROBLEM SOLVING: AN EYE MOVEMENT PERSPECTIVE

The present study investigated (a) whether the perceived cognitive load was different when geometry problems with various levels of configuration comprehension were solved and (b) whether eye movements in comprehending geometry problems showed sources of cognitive loads. In the first investigation, three characteristics of geometry configurations involving the number of informational elements, the number of element interactivities and the level of mental operations were assumed to account for the increasing difficulty. A sample of 311 9th grade students solved five geometry problems that required knowledge of similar triangles in a computer-supported environment. In the second experiment, 63 participants solved the same problems and eye movements were recorded. The results indicated that (1) the five problems differed in pass rate and in self-reported cognitive load; (2) because the successful solvers were very swift in pattern recognition and visual integration, their fixation did not clearly show valuable information; (3) more attention and more time (shown by the heat maps, dwell time and fixation counts) were given to read the more difficult configurations than to the intermediate or easier configurations; and (4) in addition to number of elements and element interactivities, the level of mental operations accounts for the major cognitive load sources of configuration comprehension. The results derived some implications for design principles of geometry diagrams in secondary school mathematics textbooks.     

分体挂壁式房间空调器透明面板的制造工艺分析

根据空调器透明面板表面质量要求高的特点,通过对透明面板制造过程中模具开发、喷涂工艺及包装流程进行分析,确定模具设计,并对注塑工艺、喷涂的设备、喷涂工艺控制以及包装运输对产品质量控制来提高产品的品质和合格率做了简要介绍,实践证明产品合格率由原来的50%左右提高到90%左右,总体制造成本大大下降,对同类产品的开发有一定的借鉴作用。     

试论东丹国及其政权的性质

东丹国是辽于926年灭亡渤海国之后,辽太祖耶律阿保机在渤海国的故土上一手炮制的政权。该政权不仅是建立在渤海国的故土上,而且在制度方面基本保留了原渤海国的制度,统治的是渤海国的遗民,与原渤海国有着千丝万缕的联系。所谓"东丹",即东契丹之意。由于这些原因,关于东丹国的性质历来是史学家们争议的热点问题之一。本文拟就笔者所掌握的资料和自身的认识对该问题进行阐述。     

Tertiary lymphoid structures as unique constructions associated with the organization,education, and function of tumor-infiltrating immunocytes

Journal of Zhejiang University-SCIENCE B - Tertiary lymphoid structures (TLSs) are formations at sites with persistent inflammatory stimulation, including tumors. These ectopic lymphoid organs...     

“快乐”王子

快乐王子在这个城市的中央广场竖立了很多年。一届一届的市长都曾经在这座巨大的雕塑前站立过,要求当代最杰出的设计师翻修这座雕塑。     

Embedded filming for social change: Learning about HIV/AIDS and rural development professionalism

Rural Development Professionals (RDPs) are key actors in processes of social change for people living with HIV/AIDS in rural areas. This article reports on the filming of a series of workshops and courses for RDPs in Ghana, India, Tanzania and Zambia. In this article the filming and the films are analyzed as tools for learning and social change for different audiences. Analyzing the production and consumption processes shows the interconnectedness of the filming and learning during the courses. The results indicate that the films contribute to improved rural development professionalism in the context of HIV/AIDS.     

快速公交站台乘客候车区域研究

本文旨在研究影响公交站台容量的因素,袭客在公交站台上最有效的候车区域,为公交站台最有效的设计提供依据.     

女子柔道运动的供能体系与训练生化原则初探

本文通过对女子柔道运动员比赛、训练中血乳酸、血糖及血尿素氮等生化指标的测试结果,分析探讨女子柔道运动供能代谢特点及运动训练的一般生化原则。旨在对制定训练计划及掌握运动量提供理论依据。