首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   4741篇
  免费   91篇
  国内免费   50篇
教育   3176篇
科学研究   558篇
各国文化   125篇
体育   174篇
综合类   168篇
文化理论   17篇
信息传播   664篇
  2024年   4篇
  2023年   30篇
  2022年   62篇
  2021年   111篇
  2020年   178篇
  2019年   193篇
  2018年   194篇
  2017年   226篇
  2016年   207篇
  2015年   213篇
  2014年   408篇
  2013年   672篇
  2012年   416篇
  2011年   407篇
  2010年   255篇
  2009年   236篇
  2008年   216篇
  2007年   177篇
  2006年   176篇
  2005年   127篇
  2004年   103篇
  2003年   80篇
  2002年   52篇
  2001年   56篇
  2000年   26篇
  1999年   17篇
  1998年   6篇
  1997年   10篇
  1996年   2篇
  1995年   2篇
  1994年   3篇
  1993年   4篇
  1992年   3篇
  1991年   6篇
  1988年   2篇
  1957年   2篇
排序方式: 共有4882条查询结果,搜索用时 219 毫秒
1.
In this article we examine the complex relationship between care experience, mental health and exclusion from school and how young people (YP) negotiate these different experiences and identities. The study is a secondary analysis, informed by symbolic interactionist theory, of interviews conducted with 19 care experienced YP in Scotland. Not all of the YP were excluded and not all had a formal mental health diagnosis, as such our study design allows interrogation of the contexts and relationships which not only facilitate but also disrupt pathways to exclusion. It also allows reconsideration of assumptions of vulnerability which are often applied to care experienced YP. Our findings suggest that these YP are moving beyond ‘role playing’ the identities ascribed to them and actively seek out relationships which enable them to construct alternative identities.  相似文献   
2.
In recent years, the transnational movement of people has resulted in increasing tension and debates about national identity. The present research utilized a discourse analytic approach to examine accounts of national identity in the U.S. among native-born U.S. residents, Mexicans living in Mexico, and Mexicans living in the U.S. Our analysis focused on two sets of diverging accounts of national identity. A first set involved participants' explanations of national identity as natural/essential, “felt”, or conditional, which served to either constrain how “American” immigrants could be or allowed for a more inclusive definition of national identity. A second set of accounts involved participants theorizing the national polity as a multicultural or monocultural space which functioned to construct national boundaries as permeable or reinforced (White) American dominance. These patterns of talk emerged across all interviews, although U.S. participants attended to more flexible and dilemmatic (e.g. inclusionary and exclusionary) accounts of national identity. We discuss the implications for the complexity of national identity.  相似文献   
3.
Drawing on acculturation and social identity literatures, the present research extends on initial work on social group connectedness among older immigrants to examine in a quasi-experimental study the well-being benefits of participating in heritage culture groups. Older immigrant clients (N = 66) of six aged-care agencies in Australia were given diary booklets in which to complete a set of measures on selected days when they did or did not attend the agencies’ heritage culture group activities, over a 2-month period. Results showed that heritage group participation reduced loneliness and increased well-being. Future research should replicate and extend these findings to assist our understanding of how heritage culture group participation aids first-generation older immigrants with aging successfully in a foreign land.  相似文献   
4.
[目的/意义] 两个国家间的创新合作机会有些是显性直接的,有些是潜在间接的。在此试图构建一种计量和分析专利引用关系的方法,用于发现两国间潜在的间接创新合作机会。[方法/过程] 全球价值链上不同环节专利之间的引用关系中,蕴含着相互衔接、配套的间接合作关系,而不同环节的专利通常具有不同的功能,即IPC存在一定跨越度。因此,设计"专利引用跨越度"指标及算法,用于计量和筛选专利引用网络中"引用跨越度"达到预设阈值的专利引用关系,作为发现间接创新合作机会的基础数据。以新加坡在中国获得授权的发明专利为样本,基于专利引用跨越度计量并配合人工解读和识别,发现中新两国间一系列的间接创新合作机会。[结果/结论] 基于专利引用跨越度计量的两国间间接创新合作机会发现的方法,被实验检验为有效。  相似文献   
5.
The article presents an analysis of 93 essays written in an upper secondary school context. The essays were collected in relation to a larger research project, which went on for 5 years in a Danish upper secondary school (2010–2015). The material represents both genders and the students are 15–17 years old. We deploy a theoretical framework taken from Norbert Elias’ notion on established-outsider relations [Elias, N., &; Scotson, J. L. (1994 [1965]). The established and the outsiders. London: SAGE] as well as his use of personal pronouns [Elias, N. (1978). What is sociology? London: Hutchinson, Elias, N. (2001). The society of individuals. New York: The Continuum International Publishing Group] in illustrating how people negotiate, position and navigate within figurational contexts [Elias, N. (1994 [1939]). The civilizing proces. Oxford: Blackwell.]. We do this in an effort to interpret how young people negotiate ‘we-I-relations’ when it comes to their sporting identity. Elias’ processual framework provides a tool for a much needed analysis of how young people continually orientate and develop their sense of selves. The web of human interdependencies and processes of change are key words when it comes to understanding the social practices and doings of the students’ constructions of self-steering. What social scientists may see as laziness and drop-outs of sports [Seippel, Ø. (2016). Prek, vekker og kjedelig? Trening og mening blant ungdom: 1985–2013. In Ø. Seippel, M. K. Sisjord, &; Å Strandbu (Eds.), Ungdom og Idrett. Oslo: Cappelen Damm Akademisk] can in the essays of students be analysed as a struggle for group connectedness and social inclusion in the classroom. The results of our research show that identity is a multiple concept and an ongoing process of emotional work [Elias, N. (1987). On human beings and their emotions: A process-sociological essay. Theory Culture Society, 4, 339–361], but also a power balance of playing and presenting what is imagined as the right performance as not being shamed as outcasts.  相似文献   
6.
机械、仪表工业类核心期刊的引文分析   总被引:10,自引:0,他引:10  
高非 《情报学报》2001,20(2):247-251
对《中文核心期刊要目总览》收录的机械、仪表工业类 2 5种核心期刊中 1998年所载论文的引文进行调查统计。对平均载文量、引文的数量、文献类型、语种分布、年代分布和各种中文文献被引频次等有关信息进行定量分析 ,客观地对该类 2 5种核心期刊的引文水平和一般规律进行综合评价  相似文献   
7.
《情报学报》被引的定量分析   总被引:45,自引:1,他引:44  
程刚  邹志仁 《情报学报》2001,20(5):632-640
文章依据南京大学中国社会科学研究评价中心研制的《中文社会科学引文索引》(CSS CI) (1998)数据库 ,对《情报学报》载文被CSSCI(1998)来源期刊的引用情况进行统计分析和评价  相似文献   
8.
本文先简要的介绍了入侵检测系统的组成和几个应用层次,接着讨论了数据融合技术中的Dempster-Shafer证据理论,并尝试给出了其在入侵检测的身份识别的一个算法和实例.  相似文献   
9.
运用引文分析法,以1994-2004年的<中国运动医学杂志>刊载的论文引文为研究对象,分析我国运动医学领域研究者吸收和借鉴科技文献的一般规律和该领域的研究特点.结果表明:我国运动医学领域论文的篇均引文数较高,外文引文比例较大,说明研究者有较强的信息吸收能力,能够及时跟踪国际学术发展动向;该领域引文的半衰期较长,说明运动医学属于基础研究与应用研究并重的学科;高频引用的中文期刊涉及体育类、生物类、医疗卫生类的核心期刊,显示了运动医学交叉学科的特点.  相似文献   
10.
中国科技论文产出力和影响力发展的波动分析   总被引:5,自引:0,他引:5  
党亚茹 《情报学报》2002,21(1):121-128
本文以 1989— 1998年SCI收录中国科技论文量和引文量为评价依据 ,建立了科技论文产出力和影响力的发展波动分布模型 ,以发展波动强度系数为评价因子 ,给出 10年来中国科学发展趋势的评价分析  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号