中学生互联网使用及干预策略研究     

王素然 《廊坊师范学院学报》2006,22(4):101-103

使用自编《中学生互联网使用调查问卷》对某中学学生互联网使用情况进行全面调查,调查结果显示了中学生互联网使用的特点及影响,这些提醒人们必须要对中学生互联网的使用进行积极而适当的干预。  相似文献   

The expected value of possession in professional rugby league match-play     

Thomas Kempton  Nicholas Kennedy  Aaron J. Coutts 《Journal of sports sciences》2016,34(7):645-650

This study estimated the expected point value for starting possessions in different field locations during rugby league match-play and calculated the mean expected points for each subsequent play during the possession. It also examined the origin of tries scored according to the method of gaining possession. Play-by-play data were taken from all 768 regular-season National Rugby League (NRL) matches during 2010–2013. A probabilistic model estimated the expected point outcome based on the net difference in points scored by a team in possession in a given situation. An iterative method was used to approximate the value of each situation based on actual scoring outcomes. Possessions commencing close to the opposition’s goal-line had the highest expected point equity, which decreased as the location of the possession moved towards the team’s own goal-line. Possessions following an opposition error, penalty or goal-line dropout had the highest likelihood of a try being scored on the set subsequent to their occurrence. In contrast, possessions that follow an opposition completed set or a restart were least likely to result in a try. The expected point values framework from our model has applications for informing playing strategy and assessing individual and team performance in professional rugby league.  相似文献   

Perceptual-cognitive expertise of handball coaches in their young and middle adult years     

Lennart Fischer  Joseph Baker  Rebecca Rienhoff  Bernd Strauß  Judith Tirp  Dirk Büsch 《Journal of sports sciences》2016,34(17):1637-1642

There is little research investigating the maintenance of perceptual-cognitive expertise in general and even less comparing coaches of different ages. The aim of this study was to test for perceptual-cognitive differences between age groups, licence levels, and their interaction. This study investigated differences in skilled performance between young and middle-aged coaches of three different skill levels. Participants performed an accuracy-oriented pattern recall (mean distance in pixel) and a time-oriented flicker test (mean detection time in ms). There were some significant differences between age groups and between skill groups for both tests, but no interactions. For the pattern recall test, the effect sizes were larger for skill level differences, while for the flicker test effects were larger for ageing. These results suggest coaches are able to maintain accuracy skills better than reaction timed tasks. This is in line with findings on speeded performance in general populations, which show declines with age. Moreover, results also support findings on perceptual expertise in skills where accuracy was important.  相似文献   

信息咨询服务的创新发展与用户需求特点分析     

文正芳 《宜宾学院学报》2004,7(1):106-108

文章对当代图书馆信息咨询服务工作随着网络时代的到来呈现出的创新变化和用户需求的特点进行了分析 ,提出当代图书馆信息咨询服务的发展方向和策略  相似文献   

第17届排球世锦赛中外女排进攻效果对比研究     

潘文刚  杨管 《辽宁体育科技》2016,(1):95-98

运用录像观察、数理统计和对比分析等方法,对中外女排在第17届世锦赛中扣球技战术运用情况进行研究。结果表明：中国女排是以两边拉开进攻为主并结合高度与速度等快变战术为一体的技战术打法;进攻战术的总体运用效果十分理想,与其他各国相比扣死率较高且失误率低;后排攻在比赛中展现出了强大的实力,但在强攻和快攻方面与巴西、美国等欧美强队相比还存在一定差距。建议中国女排应进一步加强对强攻能力的训练,尤其要努力丰富年轻队员的大赛阅历以保证其技术发挥的稳定性;在面对欧美强队时应努力提高一传到位率,并加强进攻队员之间的掩护配合,使各种快变战术能够在比赛中得到有效发挥,并尽量避免自身进攻方式及手段的单一化。  相似文献   

论“篮板球”在现代篮球竞赛中取胜的积极作用     

刘强 《教育教学论坛》2019,(1):210-211

本文在提出篮板球的有关概念以后,全方位、多层次分析论述了篮板球在现代篮球竞赛中取胜的积极作用,阐明篮板球对篮球策略运用的重要意义。通过对这些问题的分析研究,可以增强读者对篮板球在现代篮球竞赛中取胜的积极作用的信念,明确篮球战术的发展方向。并可作为指导篮球训练与比赛实践的理论参考。  相似文献   

计算机网络安全策略简述   总被引：1，自引：0，他引：1  

郑立文 《宁德师专学报(自然科学版)》2001,13(2):148-149

随着电子商务时代的到来 ,计算机网络的全局性安全得到广泛关注 .就计算机网络的安全策略作一简要的陈述 .  相似文献   

辽宁参与东北亚区域经济合作的策略选择   总被引：1，自引：0，他引：1  

李公允  王咏梅 《沈阳教育学院学报》2006,8(1):1-5

参与东北亚区域经济合作是辽宁走向世界经济舞台的重要历史机遇。针对东北亚区域经济发展的现状和特点,辽宁应做出自己的策略选择:要从被动参与转到主动出击;从单边自主转到双边或多边合作;从单一领域和产业转到所有领域和产业。为此,辽宁要加快自身的国际化建设进程。  相似文献   

A response to strategies and tactics through participatory action research in a developmental mathematics course     

German Alonso Moreno  David Rutledge 《Educational Action Research》2018,26(3):420-438

This paper explores the value of participatory action research in a community college developmental mathematics course. The authors used the framework of critical mathematics education in order to understand the critical conversations of students about their learning experiences, and also to help the instructor of the course develop the curriculum that attended to student experiences. The authors also draw on Michel de Certeau’s ideas about strategies and tactics to understand how students responded to their past learning experiences. Data results from the study show that students can gain a better understanding of their own learning and subsequently develop deeper content knowledge when they are more involved in the teaching and learning process. Lastly, the authors conclude that as adult learners grow in their understanding of the learning processes and of the content being presented, participatory action research can play an important role in the entire development of thinking and intellectual engagement.  相似文献   

实施《体育与健康课程标准》的教学策略研究     

曾怀光 《广东教育学院学报》2005,25(2):92-95

传统的体育教学策略形成了一种固有模式，它是紧紧围绕教材进行的，各个学段的设计既可以具有相关因素，也可以互不相关。而在《体育与健康课程标准》中体现的现代体育教学策略关注的是学生在教学活动中的思维变化过程，强调课程结构的完整性与呼应性，整个教学活动的设计是连贯的、递进的。前后比较，显现了新旧教学策略的差异性。  相似文献