自理让我如此神气     

阿D 《小学生》2005,(Z1)

班主任杨老师讲述(shu) 相宇楠(nan)在我们班表现很突出。自理和管理能力强是她的最大优点。 在一年级刚开学时,老师不熟(shu)悉(xi)同学,同学间也互相不认识,所以班长由我直接指定。因为对学生不熟悉,指定的班长因为这样那样  相似文献   

阅读教学中确定目标的作用     

威廉·E·布兰顿  卡伦·D·伍德  加里·B·穆尔曼  陈春喜 《外国中小学教育》1992,(4)

阅读教学中确定阅读目标,可从多方面帮助学生对文章的理解。学生独立阅读文章时,在老师指导下培养学生提出正确的目标、要求的能力。阅读教学的目标,应该始终是帮助学生向独立阅读过渡,教师确定目标的模式,应逐渐由教师和学生同时确定所代替,而最终让步给完全由学生确定。至少从三个方面来说,目标的确定提高了阅读理解的能力:  相似文献   

诗二首     

D·H·劳伦斯  王竞 《世界文化》1992,(2)

资产阶级真令人恶心资产阶级真令人恶心,尤其是那些人中的男性。体面,冠冕堂皇,是否要我把他当作礼品送上?难道他不漂亮?不健康?不是极好 的样品?难道他外表不像个衣冠楚楚精神饱 满的英国佬?难道他不是上帝自身的形象,猎鹤鸽、打棒球,一天行走30英 里?难道你不羡慕,那么有钱,那么时 髦?不过,请等一下。让他体验一种新的情感,让他置身 于别人的困境,让他遇到道德的难题,或是生活迫使他要重新理解,那时我们可看到他垮了下来,像受潮的蛋白酥皮,我们可看到他一筹莫展,成了傻 瓜,或成了恶痞。当他的智力面临新的考脸,严峻的生死彼关的考验,且看…  相似文献   

冠军由基因决定吗?     

JamesS.Skinner Ph  .D. 《体育科学》2003,23(3):135-139

本文要点: ◆遗传型是机体全部遗传基因的总和,代表了个体的遗传潜力.在决定个体的解剖、生化、生理、行为等特性或遗传表型(如褐色的眼睛、75kg的体重、50 ml/kg/min的最大摄氧量等)上起主导作用.  相似文献   

FID教育与培训委员会1987—1988年报告     

马特  D 王知津 《国外情报科学》1991,(2):21-25,58

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The relationship between peak height velocity and physical performance in youth soccer players   总被引：1，自引：1，他引：0  

Philippaerts RM  Vaeyens R  Janssens M  Van Renterghem B  Matthys D  Craen R  Bourgois J  Vrijens J  Beunen G  Malina RM 《Journal of sports sciences》2006,24(3):221-230

Longitudinal changes in height, weight and physical performance were studied in 33 Flemish male youth soccer players from the Ghent Youth Soccer Project. The players' ages at the start of the study ranged from 10.4 to 13.7 years, with a mean age of 12.2 +/- 0.7 years. Longitudinal changes were studied over a 5 year period. Peak height velocity and peak weight velocity were determined using non-smoothed polynomials. The estimations of peak height velocity, peak weight velocity and age at peak height velocity were 9.7 +/- 1.5 cm x year-1, 8.4 +/- 3.0 kg x year-1 and 13.8 +/- 0.8 years, respectively. Peak weight velocity occurred, on average, at the same age as peak height velocity. Balance, speed of limb movement, trunk strength, upper-body muscular endurance, explosive strength, running speed and agility, cardiorespiratory endurance and anaerobic capacity showed peak development at peak height velocity. A plateau in the velocity curves was observed after peak height velocity for upper-body muscular endurance, explosive strength and running speed. Flexibility exhibited peak development during the tear after peak height velocity. Trainers and coaches should be aware of the individual characteristics of the adolescent growth spurt and the training load should also be individualized at this time.  相似文献   

锌指     

Rhode.  D 颂平 《科学中国》1993,(6):14-22

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The energetics and benefit of an arm swing in submaximal and maximal vertical jump performance     

Lees A  Vanrenterghem J  De Clercq D 《Journal of sports sciences》2006,24(1):51-57

The aims of this study were to investigate the energy build-up and dissipation mechanisms associated with using an arm swing in submaximal and maximal vertical jumping and to establish the energy benefit of this arm swing. Twenty adult males were asked to perform a series of submaximal and maximal vertical jumps while using an arm swing. Force, motion and electromyographic data were recorded during each performance and used to compute a range of kinematic and kinetic variables, including ankle, knee, hip, shoulder and elbow joint powers and work done. It was found that the energy benefit of using an arm swing appears to be closely related to the maximum kinetic energy of the arms during their downswing, and increases as jump height increases. As jump height increases, energy in the arms is built up by a greater range of motion at the shoulder and greater effort of the shoulder and elbow muscles but, as jump height approaches maximum, these sources are supplemented by energy supplied by the trunk due to its earlier extension in the movement. The kinetic energy developed by the arms is used to increase their potential energy at take-off but also to store and return energy from the lower limbs and to "pull" on the rest of the body. These latter two mechanisms become more important as jump height increases with the pull being the more important of the two. We conclude that an arm swing contributes to jump performance in submaximal as well as maximal jumping but the energy generation and dissipation sources change as performance approaches maximum.  相似文献   

如何指导年轻女研究人员参与科学事业     

Nolan.  D 汪凌勇 《中外科技政策与管理》1995,(8):44-47

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运动与垂体前叶机能调控(综述)     

A·D ROGOL  姜文凯 《体育与科学》1992,(3)

内分泌学是研究细胞联络的科学,其领域是探求细胞之间或细胞自身影响的方式。细胞间联系必须有一种传递或信使分子,它由分泌细胞产生并通过体液输送至靶细胞,包括4种主要联络系统:神经、神经内分泌、内分泌和免疫系统。每个系统都能影响和控制另一系统的某些机能,反之,又接受被它所影响系统的调节和指令,因此,它们是高度综合和互相关联的,也反映其进化源十分接近。经典的血液  相似文献