变形体重力做功的研究     

蒋达国 《四川职业技术学院学报》2006,16(1):97-98

刚体是从实物抽象出的理想模型,其重心相对刚体是不变的,变形体的形状是会发生改变的,其重心相对实际物体的位置是变化的,因此在运动过程中,重力做功的计算比质点及刚体在运动过程中重力做功的计算要复杂得多．本文对变形体重力做功进行了研究,并总结了变形体重力做功的三种计算方法:根据重力做功与重力势能变化的关系计算,根据重力做功的定义计算,用微元法计算．  相似文献   

行政公益诉讼提起主体论     

刘巍 《宜宾学院学报》2005,5(2):53-54

公益诉讼是现在法学界研究讨论比较多的话题。而行政公益诉讼作为其中的一个分支，其重要性不言而喻。正所谓无原告，无诉讼，则行政公益诉讼的主体范围就成为重中之重。我国并没有在实际意义上建立行政公益诉讼，对其主体范围也不明确，因此研究主体范围问题大有必要。  相似文献   

人体摄影的美学思考   总被引：1，自引：0，他引：1  

向上 《湖南科技学院学报》2005,26(8):270-272

罗丹说：“在任何民族中，没有什么比人体的美更能激起富有感官的柔情的美了．”黑格尔也认为。人体是高于一切其他形象的最自由最美的形象”，从石器时代的维纳斯到古希腊雕刻，以及文艺复兴时期的绘画雕塑，都有人体艺术的经典之作。摄影作为对美的一种全新的记录手段和艺术表现手段，人始终是它的关照核心。借助摄影的技术扣艺术手段表现人体之美，人体摄影作为一门艺术在她短短一百五十年的发展中趋渐成熟，形成了自己独特的美学特征．本文试图从人体摄影的历史沿革、形态演变等方面着手探讨人体摄影的美学品格。  相似文献   

Change in the body temperature of healthy term infant over the first 72 hours of life     

李萌霞  孙革  NEUBAUER Henning 《浙江大学学报(A卷英文版)》2004,5(4):486-493

Objective: To determine the range of body temperature in a group of healthy Chinese term neonates over the first 72 hours of life and to assess the influence of body weight, gestational age and route of delivery. Method: All 200 consecutive cases of neonates delivered at our hospital from March to August 2001 were included in this retrospective study. Temperatures were measured immediately after delivery, after 30 minutes, 1 hour, 2 hours, 8 hours and 15 hours and on the 2nd and 3rd day. Axillary temperatures ranging from 36.5 oC to 37 oC were regarded as normal. No cases of maternal fever or systemic infection of the newborns were discovered. All infants were discharged in good general condition. Results: The mean rectal temperature at birth was 37.19 ℃. The lowest average temperature was reached at 1 hour after delivery (36.54 ℃) with a significant difference between natural delivery (36.48 ℃) and section (36.59 ℃) (P<0.05). Temperature subsequently rose to 36.70 ℃ at 8 hours and 36.78 ℃ at 15 hours (P<0.05). Hypothermia was seen in 51.8% and hypothermia in 42.5% of the patients. On the 3rd day after delivery, 96% of all temperatures were in the normal range. A significant relation was found between hypothermia and both low birth weight (P<0.001) and low gestational age (P<0.05). Conclusion: The reference range presently used did not include all physiological temperatures in the first 72 hours of life. Considering other factors, such as birth weight, route of delivery, gestational age and body temperature on the 2nd and 3rd day of life, may help to correctly assess the significance of temperatures beyond the reference range.  相似文献   

当身体成为旗帜--关于卫慧、棉棉为代表的"另类写作"的思考     

董燕 《宜宾学院学报》2006,6(1):53-56

兴起于20世纪90年代的“另类写作”是当代女性写作中一道独特的风景线,其文学表现为:思想内容粗鄙、创作视野狭窄、艺术上不断恶性自我复制和自我模仿以及反美学原则的文化倾向。本文试从“另类写作”产生的社会历史语境、思想文化继承及其市场化商业炒作等三方面阐释其创作生成背景,从而指出当下女性写作的新生之路。  相似文献   

高校办学自主权变迁的实证再研究(二)--高校内部学术决策权运行现状     

刘亚荣  屈潇潇  康宁 《复旦教育论坛》2020,18(2):18-23

在我国政府持续下放办学自主权的同时,高校内部也急需调整组织结构,提升高校学术自主能力。为此,高校一方面设立各种专业学术治理机构,为校级学术权力的行使提供基本的组织载体;另一方面普遍进行校院两级管理体制改革。实证研究表明,在高校内部学术治理机构建设方面,各种专门化的学术治理机构普及程度非常高,且大多数改革是自发进行的,决策内容涵盖与学术事务相关的所有综合决策、人力资源专项决策和学术事务专项决策,机构职能定位以咨询议事为主,机构人员仍然以高层行政管理角色为主,通过参与以及专业权威影响行使权力;在纵向分权方面,无论是否实行校院两级管理,高校一旦获得更多的办学自主权,在"如何提供"生产决策方面,都基本下放到了院系层面,使其在学术治理方面获得更多的影响力和自主性,而校院两级管理改革更加提升了二级学院整体的决策权力水平,资源配置方面尤为显著。  相似文献   

留学日本与创造社小说家的生命意识     

黄健 《徐州师范大学学报(哲学社会科学版)》2007,33(1):1-5

20世纪初期,赴日本留学的创造社小说家借助开放的日本文化环境,在思想意识和文学观念上开启了通向西方现代社会的窗口,确立了反叛传统的生命价值追求。通过“日本之桥”,他们广泛吸纳了西方现代思潮——浪漫主义、表现主义、唯美主义、弗洛伊德的精神分析学等思想文化及文学思潮,形成了以“生命冲动”和“艺术至上”为核心的审美观和文学态度。此外,当时日本社会流行的文学思潮,也显著影响了创造社小说家现代生命意识的形成。  相似文献   

论体态语在英语课堂教学中的作用     

黄立侠 《黄山学院学报》2003,(2)

课堂教学中教师在课堂上利用身体、表情、动作这样的无声语言,即体态语、积极创设情景,形成氛围,通过课堂活动,增加学生学习英语的社会实践性,激发学生学习英语的兴趣及主动性,以得到综合能力的培养。运用体态语是课堂教学的技巧与艺术,最终也提高了教学的课堂效率。  相似文献   

Overweight,perceived overweight and involvement in bullying in middle adolescence     

《Child abuse & neglect》2016

Overweight is reportedly a risk factor for being bullied, and body image may mediate this association. Research on associations between overweight and bullying has so far only focused on children and early adolescents. We explored associations between actual and perceived overweight at age 15 and involvement in bullying at ages 15 and 17. A total of 2070 Finnish adolescents responded to a survey at ages 15 and 17. Self-reported weight and height, perceived weight and involvement in bullying were elicited. Being overweight at age 15 was not associated with being bullied or with being a bully at age 15 or 17. Perceived overweight among girls was associated with subsequent involvement in bullying as a bully and in feeling shunned. Weight related bullying may decrease from pre- and early adolescence to middle adolescence. The associations between perceived overweight and self-identification as a bully, and those between perceived overweight and feeling isolated may be explained by the phenomena representing psychological dysfunction.  相似文献   

优秀游泳运动员的形态特点研究     

陈静侬 《韩山师范学院学报》2001,22(2):108-111

尽量减少身体在水中前进的阻力，是游泳运动员取得好成绩的重要因素之一，对此，运动员自身的体形特点显得非常重要，身材高大，宽肩窄髋，流线型好，有利于游泳竞技项目。  相似文献