How do pre-kindergarteners spend their time? Gender,ethnicity, and income as predictors of experiences in pre-kindergarten classrooms   总被引：2，自引：0，他引：2  

Diane M. Early  Iheoma U. Iruka  Sharon Ritchie  Oscar A. Barbarin  Donna-Marie C. Winn  Gisele M. Crawford  Pamela M. Frome  Richard M. Clifford  Margaret Burchinal  Carollee Howes  Donna M. Bryant  Robert C. Pianta 《Early childhood research quarterly》2010

The current paper considers how children spend their time in state-funded pre-kindergarten programs and how time use relates to ethnicity, gender, and family income, based on the assumption that how time is spent in pre-kindergarten is relevant for the programs’ success in narrowing achievement gaps. Classroom observations of 2061 children in 652 pre-k programs in 11 states were analyzed. Findings indicated that the pre-kindergarten day was roughly equally divided among free choice, teacher-assigned activities, and meals/routines. Children spent much of their time in language/literacy, social studies, and art, and less time in math and gross motor activities. Much of the pre-k day was spent in ‘no coded learning activity.’ Children in classes with lower proportions of Latino and African American children and higher average income-to-need ratios were generally engaged in richer and more stimulating experiences. The child-level variables of ethnicity and income were generally unrelated to how children spent their time, above and beyond the effects of classroom-level ethnicity and income. There were generally small, but significant gender differences – always in the gender-stereotyped direction – in how time was spent, especially during free choice time.  相似文献   

C语言指针使用分析     

杨智明 《保山学院学报》2012,(2):67-70

指针是C语言的双刃剑,若准确、良好地使用,能使编写的程序精炼而高效;若使用稍有不当,就会使程序出现意想不到的错误而带来灾难。因此,通过对几种指针类型的定义与使用作对比分析,归纳整理出灵活使用指针的技巧与方法。  相似文献   

Where Does the Money Go? Rutgers University Library Tracks Reserve Collection Purchases     

《Journal Of Access Services》2013,10(3):17-26

ABSTRACT

Rutgers University Libraries are using a Microsoft Access database to track the purchase of books requested by teaching faculty for use in the Reserve Collection. Reports are generated which show what is purchased, how money was spent. Combined with circulation figures and LC Subject areas, the database provides documentation of library support of on-campus programs and research areas.  相似文献   

Modeling risk for child abuse and harsh parenting in families with depressed and substance-abusing parents     

《Child abuse & neglect》2015

Children with substance abusing parents are at considerable risk for child maltreatment. The current study applied an actor–partner interdependence model to examine how father only (n = 52) and dual couple (n = 33) substance use disorder, as well as their depressive symptomology influenced parents’ own (actor effects) and the partner's (partner effects) overreactivity in disciplinary interactions with their children, as well as their risk for child maltreatment. Parents completed the Center for Epidemiologic Studies Depression Scale (CES-D; Radloff, 1977), the overreactivity subscale from the Parenting Scale (Arnold, O’Leary, Wolff, & Acker, 1993), and the Brief Child Abuse Potential Inventory (Ondersma, Chaffin, Mullins, & LeBreton, 2005). Results of multigroup structural equation models revealed that a parent's own report of depressive symptoms predicted their risk for child maltreatment in both father SUD and dual SUD couples. Similarly, a parent's report of their own depressive symptoms predicted their overreactivity in disciplinary encounters both in father SUD and dual SUD couples. In all models, partners’ depressive symptoms did not predict their partner's risk for child maltreatment or overreactivity. Findings underscore the importance of a parent's own level of depressive symptoms in their risk for child maltreatment and for engaging in overreactivity during disciplinary episodes.  相似文献   

浅述跳远助跑与起跳动作技术     

赵斌 《搏击·武术科学》2009,(2)

文章运用文献资料法、综合分析法、调查法等研究方法,对跳远运动进行分析研究,全面地介绍了跳远助跑与起跳技术在跳远学习和训练中的重要性,并从现代跳远的特点出发,研究跳远运动员助跑速度和动作的准确性,以期为跳远的发展提供可行性参考。  相似文献   

门捷列夫的预言及其认识论意义     

邢如萍  成素梅 《科学技术与辩证法》2010,27(2):50-55

门捷列夫根据元素周期律（表）,对未知元素的存在和各种性质做出成功的预言,由此成为科学哲学中预言主义主张的依据,成为一个颇有争议的典型科学案例。文章回顾并重审元素周期律的相关史实,揭示出门捷列夫元素周期律（表）的理论特征,指出相对于严格的定律或理论标准,元素周期律（表）有非完整性的特征。通过分析,证明元素周期律（表）仅是一种具有局部合理性的知识组织形式,门捷列夫通过元素周期表做出的新颖性预言,只是理论的一个局部内容的逻辑推演结论,不能作为新颖性预言主张的依据。  相似文献   

经济快速发展地区土地利用生态风险评价——以昆山市为例   总被引：1，自引：0，他引：1  

孙洪波  杨桂山  朱天明  苏伟忠  万荣荣 《资源科学》2010,32(3)

本文从土地利用视角,在传统生态风险评价框架改进基础上,构建风险三要素评价模型并对昆山地区综合生态风险空间分异分级进行分析,研究结果表明:①风险源强度极点为玉山镇,主因在于工业污染强度大、建设用地比例高以及路网密度大等;较高的镇包括陆家、千灯、花桥和周市;较低的镇包括张浦、淀山湖和巴城;最低的为周庄与锦溪,主因来自在于其旅游重镇及重要粮食作物产区的地位;②受体暴露度最大为巴城与周市,玉山、张浦、锦溪、周庄其次,淀山湖相对较低;陆家、千灯和花桥最低,受体暴露度大的区域发生潜在生态风险的可能性更大;③风险效应值最高为玉山镇;陆家、千灯、花桥和周市较高,张浦、淀山湖和巴城较低,周庄与锦溪的最低;风险源强与风险效应存在极高相关性,相关系数达0.961;④综合生态风险的高风险区位于玉山镇;巴城、周市、陆家较高风险;张浦、千灯、花桥和淀山湖较低;周庄和锦溪则最低,昆山综合生态风险值的空间分布呈现以玉山为极点,自北向南递减趋势。  相似文献   

优化期刊管理提高期刊利用率   总被引：15，自引：0，他引：15  

洪利标 《图书馆论坛》2005,25(5):195-197

分析期刊订购管理的优化与日常业务管理的简化,探讨开发期刊信息资源,提高期刊利用率的具体措施.  相似文献   

发挥广播优势,做足时效文章     

孟夏  雪莉 《浙江传媒学院学报》2004,11(3):45-46

新闻是媒体之本,媒体传播新闻的时效如何,是大众在获取信息时取舍的标准之一.而广播除具有伴随性收听、完全解放受众视觉的特点以外,最大的优势就是快捷了,报道速度可以快到与事件发展同步.特别是突发事件、突发新闻,任何媒体都难以做到象广播那样快速、方便.这就是广播的优势.广播作为不可或缺的新闻媒体,发挥其特有的时效优势,做足时效文章,或许是广播走出"弱势"的一个突破口.  相似文献   

试析高职高专院校图书馆电子期刊的利用与服务     

屈健民 《晋图学刊》2006,(4):51-53

分析了电子期刊的特点和优势及对图书馆工作的影响,并根据高职高专院校用户群的实际情况,提出在电子期刊资源软硬件建设的基础上,应重点做好电子期刊资源的宣传推广和用户培训工作,以及对教师、科研人员及毕业班学生提供高层次的定题、科研查新等服务。  相似文献