EEG闪光刺激诱发试验对运动员神经疲劳评定的研究   总被引：1，自引：0，他引：1  

张振民  李风素  郭丹华 《体育科学》1995,(6)

本文常规EEG诊断运动疲劳的阳性率为54.54％,应用间歇性节律闪光刺激诱发试验同步记录的EEG结果表明:有运动疲劳的运动员组Alpha波幅下降29％(P<0.05),随着闪光刺激频率的加快产生节律同化的频度逐渐下降、无节律同化的阳性率上升到72.73％(P<0.001),潜伏期和恢复期时间不正常的阳性率分别为74.56％和85.46％(G<0.001),比常规EEG诊断运动疲劳的阳性率明显高。  相似文献   

近十年国外企业信息服务研究进展   总被引：1，自引：0，他引：1  

廖璠 《图书情报知识》2008,(3):47-52

本文从国外企业信息服务的评价研究、技术研究、市场经营研究、业务发展模式研究、发展战略研究、管理研究、变革研究等理论研究的角度以及信息服务的技术应用、专利服务应用、实证研究等角度出发,综述了国外企业信息服务近十年来取得的研究成果和经验,指出行业应用是信息服务发展的取向,重评价、重技术、重市场、重业务外包是企业信息服务研究的几大特点,文章旨在为我国企业信息服务的研究和实践提供参考。  相似文献   

第43届世乒赛女子单打比赛评析     

蔡学玲 《北京体育大学学报》1996,(3)

第43届世界乒乓球锦标赛,中国选手邓亚萍、乔红等在面临欧亚外国选手及“海外兵团”有力挑战后,连闯数关,包揽世乒赛女子单打前三名,说明中国女队的技战术水平在世界乒坛仍占有较大优势,心理素质也日趋成熟,但中国女队也存在后备力量不理想,年轻选手心理素质不够稳定,技术风格不够凶狠等问题,需引起我们思想上足够的重视。  相似文献   

我国信息资源共享实践及理论研究进展   总被引：53，自引：0，他引：53  

马费成  裴雷 《情报学报》2005,24(3):277-285

本文通过回顾信息资源共享的历史发展,研究信息资源共享的实践和理论进展,提出了信息资源共享的关键和目前存在的问题  相似文献   

农村留守儿童心理健康现状与对策--以浏阳市澄潭江镇为例     

董颖  李维江  成夏炎 《湖南第一师范学报》2015,(2)

通过对浏阳市澄潭江镇小源村的儿童、村民以及教育工作者进行问卷调查、访谈等不同方式的沟通和交流，了解到当地留守儿童的心理健康现状，并通过对收集的数据进行统计整理和分析，只有家庭、学校、社会和政府四个层面密切配合才能做好农村留守儿童心理健康教育。  相似文献   

Guiding Low Spatial Ability Individuals through Visual Cueing: The Dual Importance of Where and When to Look     

Victoria A. Roach  Graham M. Fraser  James H. Kryklywy  Derek G.V. Mitchell  Timothy D. Wilson 《Anatomical sciences education》2019,12(1):32-42

Research suggests that spatial ability may predict success in complex disciplines including anatomy, where mastery requires a firm understanding of the intricate relationships occurring along the course of veins, arteries, and nerves, as they traverse through and around bones, muscles, and organs. Debate exists on the malleability of spatial ability, and some suggest that spatial ability can be enhanced through training. It is hypothesized that spatial ability can be trained in low-performing individuals through visual guidance. To address this, training was completed through a visual guidance protocol. This protocol was based on eye-movement patterns of high-performing individuals, collected via eye-tracking as they completed an Electronic Mental Rotations Test (EMRT). The effects of guidance were evaluated using 33 individuals with low mental rotation ability, in a counterbalanced crossover design. Individuals were placed in one of two treatment groups (late or early guidance) and completed both a guided, and an unguided EMRT. A third group (no guidance/control) completed two unguided EMRTs. All groups demonstrated an increase in EMRT scores on their second test (P < 0.001); however, an interaction was observed between treatment and test iteration (P = 0.024). The effect of guidance on scores was contingent on when the guidance was applied. When guidance was applied early, scores were significantly greater than expected (P = 0.028). These findings suggest that by guiding individuals with low mental rotation ability “where” to look early in training, better search approaches may be adopted, yielding improvements in spatial reasoning scores. It is proposed that visual guidance may be applied in spatial fields, such as STEMM (science, technology, engineering, mathematics and medicine), surgery, and anatomy to improve student's interpretation of visual content. Anat Sci Educ. © 2018 American Association of Anatomists.  相似文献   

硼酸盐发光材料的研究进展   总被引：1，自引：0，他引：1  

黄宏升 《安康学院学报》2011,23(3):92-94

近年来,硼酸盐发光材料研究是一个比较活跃的领域,学者们在此方面进行了大量的研究。本文对国内外硼酸盐发光材料的总体研究状况进行了简述,并着重从无水硼酸盐及水合硼酸盐两大体系介绍了纳米硼酸盐发光材料的研究现状,同时对硼酸盐发光材料研究的发展方向提出了展望。  相似文献   

The effect of smartphones and playing video games on decision-making in soccer players: A crossover and randomised study     

Leonardo S. Fortes  Dalton De Lima-Junior  Lenamar Fiorese  José R. A. Nascimento-Júnior  Arnaldo L. Mortatti  Maria E. C. Ferreira 《Journal of sports sciences》2020,38(5):552-558

ABSTRACT

The objective of this study was to analyse the effect of the use of social networks in smartphones or playing video games on the passing decision-making performance in professional soccer athletes. Participants were 25 male professional soccer athletes (mean ± SD: age 23.4 ± 2.8 years). The participants performed three randomised conditions divided into three groups: control (CON), smartphone (SMA), and video game (VID). Before and after each experimental condition, the Stroop Task assessed the level of induced mental fatigue. Then, the athletes performed a simulated soccer match. A CANON® camera recorded the matches for further analysis on passing decision-making performance. A group effect was identified (p < .01) with impairment on passing decision-making performance for the SMA (p = .01, ES = 0.5) and VID (p = .01, ES = 0.5) conditions. We concluded that the use of social networks on smartphones and/or playing video games right before official soccer matches might impair the passing decision-making performance in professional soccer athletes.  相似文献   

对中学生异性交往偏差问题的个案研究——基于青春期心理健康教育的视角     

刘朝辉  冀晨 《唐山师范学院学报》2011,33(5):133-136

学会交往是中学生成长的重要的内容,但在处理与异性同学的关系时,常出现＂交往过密＂这一偏差行为。通过呈现家长、教师开展心理健康教育的过程,能从其做法中吸取经验教训,获得有益启示。  相似文献   

中学生主体性与心理健康的相关研究     

肖亚歌 《成都教育学院学报》2011,(3):21-23,50

运用ZTX和MHT量表对郑州市两所中学学生进行问卷调查结果表明：中学生主体性水平与其心理健康水平存在显著负相关;中学生主体性水平越高,其心理健康水平则越高。  相似文献