第17届世界杯足球赛决赛阶段定位球进球分析   总被引：7，自引：1，他引：6  

林宁 《山东体育学院学报》2004,20(1):68-69

对第17届世界杯足球赛决赛阶段64场比赛的定位球进球进行观察与统计，指出定位球战术在比赛中仍占据重要地位，开场和邻近结束的时间是定位球进球的黄金时段，任意球是定位球进球的主要手段，头顶球在定位球进攻中起重要作用。  相似文献   

A Safe,Helpful, and Ubiquitous Place That Requires Further Study     

Bradley Wade Bishop 《Public Library Quarterly》2016,35(4):318-324

In this article, Bradley Wade Bishop sets forth the unspoken premise that public libraries that offer desired services to their constituents are going to succeed. This article has many specific examples of emergency and continuing services that small public libraries provide. It also suggests the need for extensive research on successful libraries which illustrate all sorts of rules about how to meet the future successfully.  相似文献   

人本主义教育观与大学英语分级教学   总被引：1，自引：0，他引：1  

刘星莹 《广东技术师范学院学报》2005,(2):89-91

人本主义教育观在70年代兴起之后成为一种浪潮很快波及到了语言教育界。它的主要教育思想是以“学生为中心”,主张重视学生的情感诉求,认为教学活动应有助于学生的自我发现、内省和自尊。大学英语分级教学正是这种教育观的体现。本文首先介绍了人本主义教育思想的起源及其核心内容,然后阐述了这种理论在分级教学中的具体运用。  相似文献   

三角形packing问题中零自由度动作的分类   总被引：1，自引：0，他引：1  

何大华  陈传波 《武汉工程职业技术学院学报》2001,13(3):1-5

三角形packing问题中三角形可以进行连续平移和旋转,如果不对三角形放置动作进行限制,则计算将无法实现。本文提出了零自由度动作概念,并对它进行了详细的分类,为求解三角形Packing问题建立了一个接近客观情况的模型。  相似文献   

《切韵》系韵书歌戈韵分合性质研究--歌戈韵在韵书中的反切比较     

陆招英 《福建师范大学学报(哲学社会科学版)》2004,(4):83-86

我们用几种韵书比较切下字系统 ,发现有许多字原本属于开口韵歌、哿的字在《集韵》里分别收在合口韵戈、果韵中 ,但切下字却仍用开口字。开合混置的韵字特别多 ,不仅有开口韵放入合口韵 ,而且也有合口韵放入开口韵 ,但切下字系统不变  相似文献   

Child welfare characteristics in a sample of youth involved in commercial sex: An exploratory study     

《Child abuse & neglect》2019

BackgroundHomeless, runaway, and youth exiting foster care are vulnerable to sexual exploitation, but little research has parsed the societal, community, and individual factors that contribute to their risk.Objectives(1) To estimate child welfare characteristics in a sample of homeless young people who engaged in commercial sex (CS); and (2) To compare young people who were sex trafficked (ST) to those who engaged in some other form of CS.Participants and settingThis study includes 98 homeless young people in Philadelphia, PA, Phoenix, AZ, and Washington, DC, who were interviewed for a larger study of ST and endorsed engagement in CS.MethodsWe used a non-probability, purposive, maximum variation sampling procedure. Interviews were recorded and responses were simultaneously noted on a standardized interview form. Data were analyzed through means, frequencies, and bivariate tests of association.ResultsAverage age of the full sample of 98 homeless young people was 20.9 years; 48% were female and 50% were Black/African American. Forty-six percent of the full sample was sex trafficked. The full sample and the victims of ST differed significantly in three child welfare characteristics, with the ST group more likely to have been maltreated as children, more likely to have had family involvement with the child welfare system (CWS), and more likely to report higher rates of living someplace other than with their biological parents as children.ConclusionsST victims differ from those who engaged in other forms of CS in histories of maltreatment, involvement with the CWS, and exposure to residential instability while growing up.  相似文献   

复合材料自动铺丝张力测控系统的研究   总被引：1，自引：0，他引：1  

员莹 《三门峡职业技术学院学报》2011,10(1):119-121

介绍了一种复合材料预浸纱铺丝设备在铺丝时的张力测控系统,该系统可以同时对八个通道进行张力测量,利用张力传感器测量纤维的张力,通过控制联动阻尼放纱磁粉离合器的阻力矩控制丝的张力。同时介绍了系统的数学模型的建立、硬件、软件设计等。  相似文献   

The influence of teacher practice placement on one's beliefs about intellectual disability: a student's reflection     

OWEN DOODY  MORGAN O CONNOR 《Support for Learning》2012,27(3):113-118

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基于极点配置的机械手电液伺服控制系统设计     

王锡淮  肖健梅 《上海海事大学学报》1998,(4)

介绍了一种基于极点配置的控制系统计算机辅助设计算法,并对某示教再现型机械手的臂回转伺服控制系统进行了设计和仿真计算,取得了较满意的结果。  相似文献   

初探武术进入奥运会的项目设置与裁判评分模式   总被引：11，自引：0，他引：11  

邱丕相  王震  韩雪  刘同为  陆根秀  蔡钢  梅杭强 《上海体育学院学报》1998,(1)

采用文献资料、问卷调查、比较和专家访谈等研究方法,提出并分析了武术进入奥运会的项目设置与裁判评分模式。  相似文献