Peripheral Narrowing among Experienced and Inexperienced Rifle Shooters under Low- and High-Stress Conditions     

Daniel M. Landers  Wang Min Qi  Patricia Courtet 《Research quarterly for exercise and sport》2013,84(2):122-130

Abstract

This study examined Easterbrook's (1959) hypothesis that performance on a primary task would improve or at least be maintained with increased levels of arousal, while performance on a secondary task would decrease. To test this hypothesis, the performance of 20 collegiate rifle shooters (10 experienced, 10 inexperienced) on a primary target shooting task and a secondary auditory task were compared while shooting under low- and high-time stress conditions. Heart rate results, but not a self-report anxiety measure, provided evidence for the effectiveness of the stress manipulation. The results primarily supported Easterbrook's hypothesis. There were no differences in secondary task performance between experienced and inexperienced shooters. However, subjects who first underwent high time stress followed by low (H-L) shot better than those given the reverse order (L-H). These findings are discussed in relation to the attention demands of self-paced sports as well as the transfer effects of stress.  相似文献   

Information recall of younger and older skilled athletes: The role of display complexity,attentional resources and visual exposure duration     

Gershon Tenenbaum  Noa Levy‐Kolker  Michael Bar‐Eli  Robert Weinberg 《Journal of sports sciences》2013,31(6):529-534

This study was concerned with the interactive role of experience of athletic skill with other relevant environmental variables (display complexity, attentional resources, exposure time of stimuli) on perception (recall) of structured handball game situations. Nineteen experienced (older) and 19 less experienced (younger) handball players were assigned randomly either to ball‐bouncing (diverted attention) or to calm seated (focused attention) conditions. In each of the two conditions, the subjects were exposed to a total of 36 slides containing 2–3, 5–6 and 8–10 players. Eighteen slides were exposed for 0.5 s and 18 for 1.0 s. All the slides contained structured defence and offence situations. Recall scores were subjected to repeated‐measures ANOVA using attention condition and age as between‐subject factors and task complexity and exposure duration as within‐subject factors. The results showed that the recall of less experienced players deteriorated more than the recall of more experienced players following exposure to complex displays (≥ 8 players) while engaging in a secondary task (bouncing). The findings suggest that research paradigms should be applied in the field of sport which share both ecological validity and a potential to discover the cognitive substrates underlying experience and age in skilled motor performance.  相似文献   

美国基础研究经费投入与管理对我国未来的经验借鉴     

张丽琴  侯波 《未来与发展》2013,(11):21-24

基础研究是整个科技创新活动的基础和源泉。通过对美国基础研究投入情况总结与分析,为我国基础研究经费投入及绩效评估工作提供借鉴。本文系统分析了美国联邦政府基础研究投入与执行、基础研究经费管理经验,结合我国实际情况,提出了加大基础研究投入力度、充分发挥政府的引导和支持作用、构建有效的协调机制和加强基础研究经费绩效评估等相关政策建议,对我国未来基础研究经费管理提供经验借鉴。  相似文献   

养老保险改革的国际经验与我国的现实选择     

杨波 《未来与发展》2013,(10):7-12

“统账结合”的养老保险制度在我国已经运行十几年时间,存在代际不公平、个人账户空账运行以及老龄化背景下财务不可持续等问题。本文试图通过分析世界养老保险改革的演进过程中积累的经验,为我国养老保险改革提出相应的建议。  相似文献   

如何激发学生阅读诗歌的兴趣     

毛锦花 《科教文汇》2013,(11):158-159

诗歌教学在语文教学中占据重要位置,也是教学难题。学生学习兴趣不高,只是被动接受老师的讲授,对于诗歌的理解停留在文字表面,无法领悟诗歌的内容和意境。本文尝试从朗读、品评、体验等方面来解决这个问题,提高学生阅读诗歌的兴趣。  相似文献   

浅谈高职高专商品学实务教学的几点体会     

徐永红 《科教文汇》2013,(15):111-112

商品学实务是市场营销和连锁经营管理等营销类专业开设的应用性很强的一门专业课,也是其他经济管理类专业的基础课。商品学知识不仅能为学生毕业后从事商品经营工作提供帮助,也能指导学生作为消费者在日常生活中正确地选购商品。本文分析了高职高专开设商品学实务的意义,如何在教学实践中运用各种社会资源,充分调动学生的积极性,取得最好的教学效果。  相似文献   

集聚科技创新资源助推产业转型升级——赴苏州昆山市挂职锻炼体会     

闾浩 《科教文汇》2013,(2):203-205

从高校和科研机构选派教授、博士,组成“科技镇长团”赴苏南县（市、区）挂职,是江苏省委省政府推动政府科技管理工作重心下移,打通科教资源与县域经济发展的“隔膜”．全面提升企业自主创新能力和产业竞争力的一项重要举措。笔者作为昆山“科技镇长团”成员,从挂职干部的角度结合开展工作情况．就集聚科技创新资源,发挥团队优势,助推昆山转型升级谈挂职锻炼体会。  相似文献   

论水彩风景写生的方法和步骤     

万壮 《通化师范学院学报》2005,26(3):81-83

着重阐论了欧美和我国水彩画及水彩风景画发展的趋向;水彩风景写生对于美术专业学生的专业素质提高的价值;结合风景写生的经历观照了水彩风景画的绘画方法和步骤;对画水彩风景写生时的体认.  相似文献   

浅谈体验视角下楚雄黑井古镇散客旅游发展的若干问题   总被引：2，自引：0，他引：2  

钱飞霞 《楚雄师范学院学报》2007,22(3):63-66

旅游者获得的体验质量越高,旅游企业从中得到的经济效益也会随之增加。本文从旅游体验的视角出发,分析了楚雄黑井目前在发展散客旅游中旅游标识系统、住宿、旅游购物等方面的问题,并对此提出了建议。  相似文献   

基于区块链的房屋租赁分配系统设计与实现     

李瑞娥  沈文枫  杨宇华  周丽萍  王洋 《教育技术导刊》2019,18(10):111-116

传统房屋租赁平台存在着用户隐私安全与租赁双方权益难以得到保障等问题。区块链技术是一种去中心化、不可篡改、可追溯、可编程的分布式账本技术,基于区块链的房屋租赁分配系统是解决当前房屋租赁行业相关问题的综合性解决方案。重点研究在非信任情况下通过密码学技术保证用户数据安全与隐私安全,结合时间戳技术将交易信息上链,以解决交易双边信用等问题。使用智能合约实现分布式的自适应寻租与匹配策略,通过对上海市地区进行实验测试,结果表明：以智能合约为基础的房屋自适应寻租匹配策略能够有效保证房屋租赁双方的权益。  相似文献