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Search Results: 1 - 10 of 57209 matches for " 姜勇 "
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四种社交类型大班幼儿内外控制点的研究

心里发展与教育 , 1996,
Abstract: 本研究采用了“同伴提名法”和访谈问卷法,对北京市区三所幼儿园的6个大班幼儿进行了社交类型与内外控制点的研究。结果表明,大班幼儿的内外控是稳定的,支持了麦克尔(mischel,m.)的实验结果。受欢迎型幼儿在内控点上人数占优,被拒绝型幼儿在外控点上人数居多。在日常生活选择中无论成就感还是失败感幼儿的外控得分要显着高于内控得分,但在失败感上内控得分显着高于在成就感上的内控得分。幼儿对教师的教育活动评价具有公正性,把成就和失败都归因于教师的居多。在他人具体评价时幼儿更易于倾向内控。
森林生态系统微量元素循环及其影响因素

应用生态学报 , 2009,
Abstract: 森林生态系统微量元素循环受制于森林中地下部分土壤环境条件和地上部分凋落物周转、穿透雨性质以及林火等重要生态过程.文中重点对森林生态系统地上部分微量元素循环及其影响因素进行了综合评述.文献资料显示,在大多数森林生态系统中,凋落物和穿透雨是保证林木微量元素营养供应和平衡的重要来源,而火烧、环境污染和施肥等也会对一些森林生态系统微量元素循环产生重要影响.凋落物分解的调控机理、全球变化及环境污染对微量元素循环过程的影响、退化生态系统恢复和重建过程中微量元素平衡等应是今后森林生态系统微量元素循环研究的重点.
《武经总要》纂修考

图书情报工作 , 2006,
Abstract: ?〔〕通过《武经总要》修纂的历史背景,考出编纂该书较为准确的年代(应始于庆历三年十月,讫于庆历七年四月至六月间)。同时,对学界常忽略的另外几位参修人员进行考实,说明其编纂原则并就它对后世的影响做进一步探讨。
棕榈油研究现况和进展
Research Status and Progress of Palm Oil
 [PDF]

燕飞, 戴智勇,
Hans Journal of Food and Nutrition Science (HJFNS) , 2014, DOI: 10.12677/HJFNS.2014.31002
Abstract:
棕榈油又称棕油、棕皮油,是从油棕树上棕果的果皮中榨取出来的油脂,为不干性油,是植物油的一种;棕榈油中饱和脂肪酸和不饱和脂肪酸的比例接近于1:1,主要含有棕榈酸(C16)和油酸(C18)两种最普通的脂肪酸,棕榈油还含有丰富的β-胡萝卜素、维生素A和维生素E。人体对棕榈油的消化和吸收率超过97%,和其他所有植物食用油一样,棕榈油本身不含有胆固醇。棕榈油资源丰富,具有抗氧化性、抗癌作用、降低胆固醇和抗糖尿病等生理功能,开发利用前景广阔
Palm oil as a kind of non-drying oil, (also known as dendê oil, from Portuguese) is an edible vegetable oil derived from the mesocarp (reddish pulp) of the fruit of the oil palms. Palm oil contains saturated and unsaturated fatty acids in the ratio of nearly 1:1 and mainly in the forms of palmitic acid (C16) and oleic acid (C18), which are two kinds of the most common fatty acids. In addition, palm oil is also rich in beta carotene, vitamin A and vitamin E. The absorption and digestion rate of palm oil in human body are more than 97%. Like all vegetable oils, palm oil does not contain cholesterol. Palm oil can be derived from extensive resources, and the physiological functions are also formidable, including anti-oxidation, anti-cancer, lowering cholesterol and anti-diabetes, etc. Therefore, the development and utilization of palm oil in the commercial food industry around the world are buoyed and have broad market prospects.
早产儿的临床特点及营养支持对其生产发育的影响
Clinical Features of Premature and Nutrition Intervention Effect on the Growth and Development of Premature Infants
 [PDF]

燕飞, 戴智勇,
Hans Journal of Food and Nutrition Science (HJFNS) , 2014, DOI: 10.12677/HJFNS.2014.32006
Abstract:

早产儿是指凡胎龄满28周以上,不足37周,出生体重在2500 g以下,身长47 cm以下的活产新生儿。早产儿具有体温调节中枢发育不全、胃动力不成熟、免疫力低下、并发症多等特点,是一个极度未成熟的群体。人类和动物研究均表明,在妊娠晚期和生后早期敏感阶段的营养不良将会对远期的生长发育产生不良影响,表现为大脑重量降低、脑细胞数减少、运动协调能力降低,另外也有足够证据表明,在关键时期的营养不良可造成大脑结构和功能的永久性损害。鉴于早产儿特殊的生理特点,营养支持对早产儿的生长发育起到十分重要的作用。
Premature refers to a live birth infant ,whose gestation period is between 28 weeks and 37 weeks; birth weight is less than 2500 g; born height is below 47 cm. Premature infant is an extremely immature group, always accompanying with hypoplasia in temperature-regulating center, immature in stomach function, low immunity and some complications. In reluctant experiments on human and animals, it’s acknowledged that malnutrition occurring at the initial phase and maturation phase will be harmful for further growth and development, characterized by reduction of brain weight or an amount of brain cells, and weak coordination function. By the way, it’s proved by enough evidence that the damage on the brain structure and function caused by malnutrition in critical period is permanent and irreversible. In consideration of the particularity of physiological needs of premature, nutrition intervention will play a very important role in the growth and development of premature infants.

Automatic Spectral Clustering of User Sessions Based on the Similarity of Global Alignment
基于全序列比对相似度的用户会话自动谱聚类

大庆,
计算机科学 , 2012,
Abstract: Focusing on the problem of low accuracy of similarity measurement and necessarily determining the number of clustering in advance in clustering algorithms of user sessions in existing personalized recommendation services sys- tans, a global alignment method based on dynamic programming algorithm was proposed to measure similarity between user sessions by integrating the information of serialized visiting pages and visiting times. On this basis,automatic spec- tral clustering was done on the user sessions by using improved NJW clustering algorithm. Experimental results show that the algorithm achieves a higher clustering performance than the comparative algorithms by considering the overall characteristics and local information of user sessions. It can also improve the efficiency of Web personalized recommen- lotion services.
中班幼儿责任心水平影响因素的协方差结构模型分析
,陈琴
心里发展与教育 , 1997,
Abstract: 本研究采用协方差结构模型分析(sem)方法,对北京市区15所幼儿园的120名中班幼儿责任心的影响因素进行了研究,着重探讨了影响中班幼儿责任心水平的主要因素,以及这些因素间的关系.研究发现,在影响中班幼儿责任心水平的因素中,同伴和教师的影响作用最大;家长自身的责任心水平通过家长对幼儿责任心的要求而对幼儿的责任行为发生作用.
远志的化学成分研究Ⅱ
,屠鹏飞
中国中药杂志 , 2004,
Abstract: 目的:研究远志的化学成分。方法:采用多种色谱方法进行分离,利用光谱数据结合理化分析进行结构鉴定。结果:从远志根皮的正丁醇层中分离得到4个蔗糖酯类化合物,分别鉴定为:sibiricoseA5(1),sibiricoseA6(2),tenuifolisideA(3)和3′,6disinapoylsucrose(4)。结论:化合物1和2为首次从该植物中分离得到。
云南地区雷电流幅值初步探究
,,李鹏
电瓷避雷器 , 2014,
Abstract: 雷电流幅值是研究区域雷电分布极其重要的一个参数,对云南省气象部门2011-2013年ADTD雷电监测网所收集的雷电数据进行数理统计分析,并按照IEEE工作组和DL/T推荐的特征函数进行拟合,结果表明:云南正负闪雷电流幅值频率分布和累计概率分布均存在显著差异,采用IEEE工作组推荐的公式对云南雷电流累计概率分布进行拟合效果最佳,在此基础上验证了云南雷电流幅值频率分布符合正态分布同时得出了云南地区雷电流幅值累计概率密度分布公式。为进一步研究云南雷电资源特征和防灾减灾工作提供了不可或缺的技术资料。
感性意识的偏见――浅析黑格尔的感性确定性

安徽大学学报(哲学社会科学版) , 2015,
Abstract: 在《精神现象学》中黑格尔对感性问题做了非常独特的处理。与康德从一种抽象的意识入手不同,黑格尔着眼于现实的感性意识,认为现实的感性意识不是一个抽象的意识结构,而是一种朴素的存在观,即它确信直接性对象的存在。而感性确定性的辩证法自身表明,这只不过是一种偏见,任何存在都是包含中介的普遍者。以此,黑格尔否定了康德关于直接被给予性的提法,从而避免了陷入自在之物的泥潭。
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