关于高校足球运动的损伤预防及措施   总被引：13，自引：0，他引：13  

杨乐 《湖北体育科技》1997,(4)

运动中发生损伤是难以避免的，然而作为大学生最喜爱的足球运动，其发生损伤比例尤为突出。本文采用问卷法对学生的损伤情况加以调查，从而找出一些损伤的产生原因，为今后的体育教学提供有效地预防措施，使损伤降低至最低限度。  相似文献   

专业英语中数学公式与符号的常用表达     

TANG Le 《江西蓝天学院学报》2007,(Z1)

在数学双语教学中,运算法则和函数公式中的数学符号及公式的读写方法有其特殊的表达方式,对常用数学公式与符号用双语进行正确表达,对科技英语教学和学习有重要的参考作用。  相似文献   

PLURALISTIC IGNORANCE AND THE CLIMATE OF OPINION IN A REAL-TIME DISASTER PREDICTION     

Major  Ann Marie 《Int. Journal of Public Opinion Research》1997,9(2):170-190

This study employed a four-fold typology of opinion groups depictingthe relationships between minority–majority status andaccurate–inaccurate perception of the climate of opinionabout the 1990 prediction of a destructive earthquake for themid-United States New Madrid Seismic Zone. Data were collectedfrom 629 residents of the area where the earthquake was predictedto occur. Two frameworks were employed to define the climateof opinion to take into account two key variables that influencepublic response to earthquake predictions: the predication'sbelievability and its importance. Accurate perceptions of theclimate of opinion were differntiated from inaccurate perceptionsbased on more frequent media use and the confidence respondentsfelt about protecting themselves from potential earthquake damages.Inaccurate perceptions of the climate of opinion are differentiatednot by more extensive media use and discussions, but by thecrediability placed on the information from the news media anddiscussions, as well as the perceived influence of these informationsources.  相似文献   

女性与奥林匹克运动发展关系研究   总被引：3，自引：0，他引：3  

王乐 《浙江体育科学》2006,28(6):4-8

妇女参与奥林匹克运动的历史是一个漫长而艰苦的历程。文章在查阅了大量文献资料,详细统计了1896年—2004年历届奥运会女子大、小项目、女运动员人数以及妇女参政的情况,回顾并总结国际妇女争取体育权利、领导决策权和消除性别歧视以及国际奥委会对女性参赛、参政态度改变的历史过程,并在此基础上指出了妇女体育在奥林匹克运动发展过程中存在的一些问题及建议措施。  相似文献   

Learning a practice through practise: presenting knowledge in doctoral spoken presentations     

Marie Manidis  Rebecca Addo 《Studies in Continuing Education》2017,39(3):235-250

Learning to ‘become doctor’ requires PhD candidates to undertake progressive public displays – material and social – of knowledge. Knowledge in doctoral pedagogy is primarily realised textually, with speaking and writing remaining as the primary assessment rubrics of progress and of the qualification. Participating textually begins, in a public sense, with the Confirmation of Candidature presentation/paper and culminates in a Viva Voce/dissertation. Drawing on linguistic ethnographic observations and analyses, this paper uses practice-based perspectives to examine a doctoral candidate practising to present knowledge publicly in a university research centre. The paper focuses on sociomaterial shifts in the trial run and final delivery of the two presentations examining how the candidate is initiated into new actions in response to these changes. Findings reveal how the candidate engages with collective understandings of the practice of presenting knowledge provided by feedback from her doctoral ‘friends’. Learning a practice through practise highlights the importance of participating as learning and learning as participating. This is particularly so in a time of change for doctoral pedagogy, when honing a practice collectively is argued to be advantageous in a localised setting that recognises and fosters the benefits of participation.  相似文献   

Opinion Versus Knowledge: The Influence of Testimony Format on Children’s Judgments in Morally Relevant Contexts     

Jee Young Noh  Laura Marie Elenbaas  Kyung Ja Park  Young Sun Chung  Melanie Killen 《Early education and development》2017,28(2):240-254

Research Findings: To test children’s use of testimony of others, 3 – 9 years (N = 227) made judgments about a potential peer transgression in which the intentions of the protagonist were ambiguous, after hearing two different forms of testimony. The 2 forms of testimony were (a) opposing opinion-based testimony from an adult authority versus a peer consensus group and (b) knowledge-based testimony (eyewitness testimony) that was counter to the participants’ initial judgments. Findings revealed that when testimony was presented in an opinion-based format, children were likely to side with the opinion that reflected their own interpretation of the peer encounter, regardless of whether the opinion came from a peer consensus or an adult authority. However, when knowledge-based testimony was introduced in support of the opposite of children’s initial interpretation of the ambiguous peer encounter, children most often changed their initial judgment to align with the new testimony. That is, children used knowledge-based testimony but not opinion-based testimony to evaluate a potential transgression. Practice or Policy: These findings demonstrate that the way in which testimony is delivered to children has a direct influence on their decision making about peer interactions and has relevance for teacher–student discourse in the classroom.  相似文献   

氟哌啶醇对N-甲基-D-门冬氨酸诱导的大鼠海马神经细胞损伤的保护作用     

严乐勤  魏尔清  沈建中 《科技通报》2002,18(4):265-269

用原代培养大鼠海马神经细胞的方法，观察氟哌啶醇对N－甲基－D－门冬氨酸（NMDA）诱导的大鼠海马神经损伤的保护作用。结果表明，氟哌啶醇能剂量依赖地抑制NMDA诱导的大鼠海马神经细胞内乳酸脱氢酶（LDH）的释放，并改善受损细胞形态，四唑盐比色法（MT）显示存活率增高。提示氟哌啶醇对NMDA诱导的大鼠海马神经细胞损伤有保护作用。  相似文献   

论客观自然的稳定性与思维逻辑化过程的统一     

张礼建  程乐 《科学．经济．社会》2006,24(2):73-75

思维的逻辑化进程与自然结构的稳定性是一个平行过程,这个过程在人与自然的实践中逐渐发展起来,并决定了在自然科学研究中凸显的客观性具有属人性质,其构成的知识也即如此。  相似文献   

Contingency in innovation and the role of national systems: taxol and taxotère in the USA and France     

Vivien Walsh  Muriel Le Roux 《Research Policy》2004,33(9):1307-1327

A very rich collection of archival material is used to compare two anticancer drugs commercialised by multinationals collaborating with public sector research, one in the USA and one in France. The framework of national innovation systems is used to compare the innovative environments for each development (different institutional structures, research programmes, financing, industry-academic-government relationships, environmental concern, and intellectual property regimes). The empirical work was able to bring out the nuances and subtleties of each environment, the way in which innovation took place in practice, and some striking differences from what stereotypical accounts of innovation in each country would have suggested.  相似文献   

北京耕地流失的时空特征与驱动机制   总被引：14，自引：0，他引：14  

孙强  蔡运龙  王乐 《资源科学》2007,29(4):158-163

利用1996年和2004年北京市两期土地利用图，提取各类用地的图斑，运用GIS技术和数理统计方法，分析了1996年～2004年间北京耕地流失的特点及其影响因素。结果发现：1996年～2004年北京土地利用变化中，大多数地类转换都与耕地直接有关，耕地流失是北京土地利用变化的核心问题；城镇扩展主要占用耕地，且耕地生产力高的平原地区因建设占用而流失的耕地量大；远郊山区耕地被建设占用的压力相对较小，但被生态用地占用的压力相对较大；1996年～2004年间，尽管耕地面积减少，但耕地破碎化程度却在加重；地形和交通状况对耕地的空间变化过程影响显著。本文研究表明，第三产业的快速发展是促使北京地区耕地流失的最主要的动力, 由此带来的居民生活水平提高对北京耕地变化的解释力最强，恰好与前人相关研究结论相互印证；人口快速增长、区域土地市场过度竞争、农业结构调整及退耕还林政策也是北京耕地流失的重要驱动因素。  相似文献