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71.
中国古代蒙学教育对于中国古代幼童道德品质的形成有着重要的作用,而蒙学教材是古代实施蒙学教育的主要中介。通过对古代蒙学概念的研究及蒙学教材特点的分析,将会为当代幼童教育的发展提供一些有用的参考与启示。  相似文献   
72.
通过文献资料法、结合实际棒球教学经验,总结出少年儿童棒球传统选材法、科学选材法及选材标准,棒球的相关进攻、防守技术知识,以及棒球运动相关技术知识,希望能对棒球运动员初级选材及相关技术有一定的帮助,同时对中国棒球事业的发展有一定的参考价值.  相似文献   
73.
在生理学课堂教学中适当应用影视资料能激发学生学习兴趣,活跃课堂气氛,取得了良好的教学效果。教师应根据生理学的教学内容,甄选与之匹配的影视资料,合理安排播放时间,使其在课堂上发挥应有的效果。  相似文献   
74.
The aim of this study was to assess the effect of the hand’s acceleration on the propulsive forces and the relative contribution of the drag and lift on their resultant force in the separate phases of the front crawl underwater arm stroke. Ten female swimmers swam one trial of all-out 25-m front crawl. The underwater motion of each swimmer’s right hand was recorded using four camcorders and four periscope systems. Anatomical landmarks were digitised, and the propulsive forces generated by the swimmer’s hand were estimated from the kinematic data in conjunction with hydrodynamic coefficients. When the hand’s acceleration was taken into account, the magnitude of the propulsive forces was greater, with the exception of the mean drag force during the final part of the underwater arm stroke. The mean drag force was greater than the mean lift force in the middle part, while the mean lift force was greater than the mean drag force in the final part of the underwater arm stroke. Thus, swimmers should accelerate their hands from the beginning of their backward motion, press the water with large pitch angles during the middle part and sweep with small pitch angles during the final part of their underwater arm stroke.  相似文献   
75.
Double-leg repeated jumping tasks are commonly used as measures of lower limb stiffness in exercise science research. Within similar stiffness calculations, variation in data-reduction criteria exists. The impact of these varied data-reduction methods on stiffness measures is unknown. Sixteen adolescent female participants from varied physical activity backgrounds performed 15 self-paced, bent-knee continuous jumps (CJb) on two force plates. Leg stiffness was calculated as the ratio of the peak force and the centre of mass displacement for each contact. Using combinations of criteria based on previous literature, 83 data-reduction methods were applied to the raw data. Data reduction suitability was assessed based on intra-trial reliability, the number of participants excluded and the average contacts excluded. Four data-reduction methods were deemed suitable for use with adolescent female populations, with three consecutive contacts within 1 SD of the average jump frequency considered optimal. The average individual stiffness values were not greatly influenced by the data-reduction method; however, for a single participant, a stiffness change of up to 6 kN · m?1 (30%) was observed. The role and potential impact of data-reduction methods used to evaluate measures of lower limb stiffness during repeated jumping tasks warrants consideration.  相似文献   
76.
The challenge of using images for the history of education and childhood will be addressed in this article by looking at them as representations. Central is the relationship between representations and reality. The focus is on the power of paintings as representations of aspects of realities. First the meaning of representation for images as sources for the history of education and childhood – mirrors of realities, complex symbol systems or representations – is explained. A distinction is made between images of real people and images of patterns of human behaviour and the value of the phenomenon of historical sensation as a methodological instrument for insight in that relationship is dealt with. Second, a specific genre of paintings from the seventeenth century, namely portraits of dead children, will be described and analysed to make clear that their value for the history of education and childhood can be studied adequately only by using those images as representations and by interpreting them within the cultural rules and regulations of time and place. This analysis results in the conclusion that images should be considered in their function as representations of aspects of educational and childhood reality.  相似文献   
77.
节能降耗、发展低碳经济是我国现阶段的经济发展的目标,节能降耗涉及行业众多,数据类型不一,数据维度多变化快,需要及时全面的掌握节能减排中的基础数据和过程数据,通过信息化的手段来实现节能减排工作的过程评价、动态监管和决策支持;WEB-GIS是成熟一种的技术架构,可以充分利用internet平台进行信息发布、数据共享和交流协作,是节能减排的信息化是一个重要手段;通过对节能减排所涉及的数据特点进行详细的分析,基于WEBGIS提出系统的架构的构思,并在此基础上提出了系统的功能模块的设计。  相似文献   
78.
在教育领域,多媒体技术在教学过程中已经得到了广泛的应用,这就对多媒体素材库提出了新的要求。多媒体素材库是多媒体课程正常进行的重要保障,需要不断完善多媒体素材库,通过建立多媒体素材库,使教师在进行课件制作时能够更加便利,学生也能够根据自己的需要找到自己想要的资源,从而保证教学工作的高效进行。  相似文献   
79.
某客户外购了一卷冷轧原料,尝试进行高温用捆带的试制,委托对其进行性能评估,以确认该原料钢卷能否满足实际生产的需要,为后续是否批量采购提供科学依据。通过对该冷轧原料进行化学成分、微观组织、力学性能、表面质量和板形进行分析,可以确认其尽管还存在一些不足,但总体上仍能满足使用要求。同时,建议客户在批量采购前最好对产品的捆扎方式、应用对象、生产工艺和性价比进行全面考虑。  相似文献   
80.
For most of us, sex is a subjective, lived experience that is as unique as our genetic make-up, our upbringing, our thoughts, values, feelings, beliefs and ideas. It is through our erotic interactions, or the absence thereof, that we form aspects of our fluid and mutable erotic paths and identities. Despite the proliferation of sexual imagery throughout our culture, many of us still struggle with what sex means to us, what we do, how we experience it and what that says about who we are as people. Some who struggle with this may seek the services of a psychosexual sex therapist. This paper aims to explain how such services function, why they are necessary and how the use of sexually explicit material, in some psychosexual therapeutic contexts, can help unravel the mixed responses we have to sex and our social conditioning, and enhance our overall relationship to eroticism, pleasure and general well-being.  相似文献   
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