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1.
美国国会图书馆是美国规模最大的图书馆,也是世界上最大的国家图书馆之一。 该馆藏书近1.1亿册,并以每年250万册的增长速度发展,它收藏的范围很广,包括书籍、手稿、照片和录音、乐谱、地图,其中超过3300万件的手稿、现代绘  相似文献   

2.
人的手指之所以灵巧,就是因为大脑对手指的支配最精细。在大脑皮层仅管理一个大拇指活动的代表区域,就比管理一整条大腿的代表区域大10倍多。医学家发现,脑萎缩病人手指的灵活协调性大为下降。相反,经常利用手指从事灵巧、精细动作的人,则较少发生脑萎缩和老年性痴呆症。实践证明,多动手、勤练手指能锻炼大脑,延缓大脑衰老、增进记忆力、预防老年性痴呆症。老年人可以通过以下几种方式锻练手指:一玩乐器。德国波恩科学研究所的专家证实,老年人若能经常弹琴,会有明显地延缓脑衰亡功效。弹琴时眼看乐谱,大脑则根据乐谱内容向手指发出指令,指挥…  相似文献   

3.
本文主要介绍提高数学知识记忆力的六种方法,即目标记忆、理解记忆、反复阅读与尝试回忆相结合记忆、系统化记忆、联想发展记忆和数形结合记忆.要学会结合实际情况,正确地选择和运用不同的方法来,充分发挥各种感官的作用,从不同的角度记忆数学知识.  相似文献   

4.
运用问卷调查法、情景记忆法和自我报告法,研究运动记忆策略和记忆监控与动作记忆成绩的关系。结果表明,运动记忆策略知识与动作记忆成绩相关不显著,动作记忆监控与动作记忆成绩有显著的相关关系。  相似文献   

5.
体院学生学习英语最常遇到的一个问题就是词汇不足,词汇不足会使学生在听、说、读、写四方面受到严重的限制。在教学中注重运用兴趣记忆、技巧记忆、对比记忆、联想记忆、阅读记忆的方法增加学生英语词汇量,从而达到在较短的时间内记忆较多词汇的目的。  相似文献   

6.
正无论是职业魔术师还是普通魔术爱好者,对已掌握的魔术节目进行定期复习是保持状态的必要环节。随着魔术阅历的增长,表演者积累的魔术节目数量在不断增加,缺乏策略的复习难免事倍功半。本文尝试从记忆类型维度考察魔术的记忆特征,并按照这种特征需求构建更加有效的复习策略。程序性记忆与陈述性记忆美国心理学家安德森将长时记忆分为程序性记忆和陈述性记忆两部分。程序性记忆是指如何做事情或者如何掌握技能的记忆。例如所学到的魔术手法、技巧就是程序性记忆。而陈述性记忆则是指对于有关事实、事件和情景的记忆,可以较  相似文献   

7.
陈禾塬 《武当》2006,(1):57-57
十堰市武当养生研究会刚刚成立便在武当山下喜获武林至宝——《练手余功》、《采气图》、《五行延寿桩》、《八十一难经》等一批珍贵资料。与此同时,发现的还有一些“武当道医药书”、“古乐谱”、《均州志》、《左传》、《西厢记》、《旧唐书》,等等。  相似文献   

8.
<正> 在体育教学和训练中,运动记忆具有重要意义。运动记忆是一种复杂的心理过程,是指对运动动作和完成动作过程的记忆。它包括身体位置的记忆,运动形式、方向、速度的记忆,以及复杂成套技术要领和系统完整科学知识的记忆。运动表象是指在人脑中重现出来的动作形象。运动表象是通过视觉表象进行的,反映动作在一定时间、空间和力量方面的特点,如身体的位置、动作的力量、幅度、方向、速度等。运动表象是运动记忆的基础,运动记忆依  相似文献   

9.
记忆是人脑对过去经验过的事物的反映。它的内容总是来源于感知过的材料。由于所感知材料性质的不同,记忆又可分为感知形象的记忆、词语概念的记忆、情感的记忆和运动的记忆。这四种记忆在体育教学和运动训练中,都有重要的意义。一、记忆的概念和意义记忆是一种复杂的心理过程,它包括识记、保持、再认和重现。所谓识记,就是经过感知在人的头脑中留下痕迹的过程;保持是指巩固识记内容的过程;再认是当经验过的事物再  相似文献   

10.
通过文献资料法、录像观察法、案例分析法等,从文化记忆理论视角,研究我国篮球文化记忆构建与传承。篮球文化记忆构建基于我国篮球文化的发展,通过文字、图像、建筑、仪式等记忆载体实现构建,在多元文化影响下,资本的高度介入使我国篮球文化记忆产生断裂。传承策略:凝练篮球文化符号,稳定文化记忆承载方式;系统构建篮球仪式,“活化”篮球文化记忆;强化篮球仪式行为治理,增强社会认同;创新篮球文化传播形式,构建多彩篮球文化记忆。  相似文献   

11.
This study examined the effect of carbohydrate ingestion on metabolic and performance-related responses during and after a simulated 1h cycling time trial. Eight trained male cyclists (VO 2 peak = 66.5ml kg -1 min -1 ) rode their own bicycles mounted on a windload simulator to imitate real riding conditions. At a self-selected maximal pace, the cyclists performed two 1h rides (separated by 7 days) and were fed either an 8% carbohydrate or placebo solution. The beverages were administered 25 min before (4.5ml kg -1 ) and at the end (4.5ml kg -1 ) of the ride. With carbohydrate feeding, plasma glucose tended (P = 0.21) to rise before the time trial. Compared with rest, the plasma glucose concentration decreased significantly (P < 0.05) at the end of both rides, with no statistically significant difference being observed between treatments. Thereafter, plasma glucose increased significantly (P < 0.05) at 15 and 30 min into recovery, and was significantly higher at 30 min during the carbohydrate trial compared with the placebo trial. No significant changes in plasma free fatty acids were observed during the ride. However, a significant increase (P < 0.05) in free fatty acids was found at 15 and 30 min into recovery, with no difference between trials. Mean power output was significantly (P < 0.05) greater during the carbohydrate compared with the placebo trial (mean - S.E.: 277-3 and 269-3W, respectively). The greater distance covered in the carbohydrate compared with the placebo trial (41.5-1.06 and 41.0–1.06km, respectively; P < 0.05) was equivalent to a 44s improvement. We conclude that pre-exercise carbohydrate ingestion significantly increases endurance performance in trained cyclists during a 1h simulated time trial. Although the mechanism for this enhancement in performance with carbohydrate ingestion cannot be surmised from the present results, it could be related to a higher rate of carbohydrate oxidation, or to favourable effects of carbohydrate ingestion on the central component of fatigue.  相似文献   

12.
The biology and medicine of rowing are briefly reviewed. Effort in a 2000 -m race is about 70% aerobic. Because the boat (and in some instances a cox) must be propelled, successful competitors are very tall, with a large lean mass and aerobic power. Large hearts may lead to erroneous diagnoses of a cardiomyopathy. Large respiratory minute volumes must be developed by chest muscles that are also involved in rowing. The vital capacity is typically large, and breathing becomes entrained. Expiration cannot be slowed relative to inspiration (as normally occurs at high rates of ventilation) and the limiting flow velocity may be reached, with the potential for airway collapse. Performance is strongly related to the power output at the ‘anaerobic threshold’, and lactate measures provide a guide to an appropriate intensity of endurance training. Peak blood lactate levels are higher in males (commonly 11–19 mmol·l -1 and occasionally as high as 25 mmol·l -1) than in females (9–11 mmol·l -1), probably because males have a greater muscle mass in relation to blood volume. The skeletal muscles are predominantly slow twitch in type, developing an unusual force and power at low contraction velocities. Many rowers have a suboptimal diet, eating excessive amounts of fat. Lightweight rowers also have problems of weight cycling. Aerobic power and muscle endurance often change by 10% over the season, but such fluctuations can be largely avoided by a well-designed winter training programme. Injuries include back and knee problems, tenosynovitis of the wrist and, since the introduction of large blades, fractures of the costae.  相似文献   

13.
我国体育市场管理法规研究   总被引:12,自引:0,他引:12  
采用调查法和比较法对全国体育市场立法和管理现状进行调查,对部分较早出台并有一定代表性的省市的体育市场管理法规的立法和管理情况进行了研究,提出了体育市场管理立法和管理的原则、基本程序、措施及其一般模式,为规范全国体育市场管理提供参考依据。  相似文献   

14.
重新认识体育的社会关联   总被引:3,自引:1,他引:2  
体育与政治之间存在一个悖论,体育的发展与经济实力之间没有直线相关,体育与教育部分重叠,体育与宗教最为近缘,体育可借用科学手段,体育的艺术禀性日益明显,体育与养生反映着两种人生观。  相似文献   

15.
本文在专家访谈、问卷调查、数理统计和文献资料分析的基础上,探析了上海社区体育竞赛参与者的特点、参与者对社区体育赛事运作管理的看法等问题。在此基础上从引进社区体育赛事的志愿者、整合社区体育赛事的各种资源、开发社区体育竞赛的无形资产、组建非营利性的专业团队、规范社区体育赛事的服务管理等方面提出了进一步满足上海社区居民日益增长的体育竞赛参赛需求的对策与措施。  相似文献   

16.
对全面把握游泳训练环节的探讨   总被引:4,自引:0,他引:4  
从系统观点出发,结合训练实践,对全面把握游泳训练环节进行探讨。认为应强化非智力因素在运动员多年训练中的作用,在育材全过程中不断选材,从整体上把握动态训练的全过程,把培养高水平运动员的整个过程置于一个严格的科学控制之下。  相似文献   

17.
我国优秀游泳运动员出发技术辅助训练的研究   总被引:3,自引:0,他引:3  
林洪  于仙贵  程燕 《体育科学》1998,18(4):53-56
为改进我国优秀游泳运动员的出发技术,采用观测和实验方法,通过拍摄运动员陆上和水下出发技术录像以及出发计时,对出发技术进行运动生物力学诊断和分析。在此基础上,根据运动员自身特点和不同泳姿提出相应的入水启动方式,并研制出发训练辅助器材,对出发预备姿势、腾起角度以及飞行远度和入水角进行控制。实践证明:这是一种快捷、有效的出发技术辅助训练方法。  相似文献   

18.
影响和限制耐力性运动项目的成绩的生理因素是复杂的和多方面的,取决于训练的强度和运动成绩.大强度持续性运动可导致呼吸肌疲劳.运动性呼吸疲劳可能在决定运动耐量方面起到关键的作用:一方面通过直接影响运动肌力量的生成(外周疲劳),另一方面,通过肢体用力自感不安反馈引起工作肌运动单位输出功率下降(中枢疲劳).对呼吸肌进行训练,可能有助于提高耐力性项目的运动成绩.  相似文献   

19.
A regression analysis of competitors' tournament results in relation to their world rankings was proposed to identify the effect of home advantage in international ‘grand-slam’ tennis and ‘major’ golf tournaments. The results provided little evidence of home advantage in either the grand-slam tennis or the golf tournaments held in 1993. The only possible evidence of home advantage was found in the Wimbledon tennis and the US Open golf championships. Even these findings can be explained, at least partially, by (1) the availability of information concerning the low world rankings of the British tennis players competing at Wimbledon, and (2) selective entry, allowing only the world's top-ranked foreign golfers into the US open golf tournament. In both cases, the lower ranking home competitors have a greater opportunity to perform above their anticipated world rankings. Therefore, provided entry into tennis and golf tournaments is truly ‘open’ to both the host nation's representatives and foreign competitors alike, home advantage does not appear to be a major factor influencing the competitors' performance in such competitions. These findings may be explained by the relatively objective nature of the scoring systems used in tennis and golf, unlike the subjective influence of refereeing decisions on the results of team-games such as soccer.  相似文献   

20.
结合欧洲足球技战术的发展特点,就鲁能泰山足球队的体能训练、技术训练、防守阵型、进攻方式、定位球、职业态度、球星培养等诸方面所存在的不足进行了分析,提出相应的改进意见。  相似文献   

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