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   718篇
  免费   34篇
管理学   118篇
民族学   7篇
人口学   64篇
丛书文集   4篇
理论方法论   111篇
综合类   6篇
社会学   377篇
统计学   65篇
  2022年   5篇
  2020年   16篇
  2019年   19篇
  2018年   31篇
  2017年   23篇
  2016年   27篇
  2015年   22篇
  2014年   19篇
  2013年   108篇
  2012年   23篇
  2011年   26篇
  2010年   21篇
  2009年   17篇
  2008年   16篇
  2007年   18篇
  2006年   23篇
  2005年   26篇
  2004年   22篇
  2003年   24篇
  2002年   23篇
  2001年   20篇
  2000年   18篇
  1999年   13篇
  1998年   13篇
  1997年   10篇
  1996年   10篇
  1995年   6篇
  1994年   5篇
  1993年   6篇
  1992年   10篇
  1991年   17篇
  1990年   5篇
  1989年   5篇
  1988年   8篇
  1987年   8篇
  1986年   4篇
  1985年   8篇
  1984年   7篇
  1983年   11篇
  1982年   5篇
  1981年   7篇
  1980年   3篇
  1979年   6篇
  1978年   3篇
  1977年   4篇
  1974年   8篇
  1973年   3篇
  1972年   3篇
  1971年   3篇
  1968年   2篇
排序方式: 共有752条查询结果,搜索用时 343 毫秒
171.
172.
173.
在过去的十年,我们对miRNA生源和机理的理解得以快速发展;然而,许多关于miRNA表达与细胞功能如何关联的基本问题依然存在。为了能在未来实现对这个层次的理解,可能需要将单细胞水平miRNA的丰度进行定量,从而绘制细胞表型关系。本文介绍一种高灵敏度并且高效的miRNA检测方法——LNA-ELF-FISH,可以在原位的单一细胞中看见单个miRNA分子  相似文献   
174.
175.
Summary.  The paper presents a statistical analysis of patterns in the incidence of disciplinary sanction (yellow and red cards) that were taken against players in the English Premier League over the period 1996–2003. Several questions concerning sources of inconsistency and bias in refereeing standards are examined. Evidence is found to support a time consistency hypothesis, that the average incidence of disciplinary sanction is predominantly stable over time. However, a refereeing consistency hypothesis, that the incidence of disciplinary sanction does not vary between referees, is rejected. The tendency for away teams to incur more disciplinary points than home teams cannot be attributed to the home advantage effect on match results and appears to be due to a refereeing bias favouring the home team.  相似文献   
176.
Whilst the advent of new and increasingly accessible communication technologies undoubtedly provides new, positive, and effective ways for individuals to communicate and connect with their communities, it simultaneously provides additional means and forums for perpetrators to abuse and harass their victims. Furthermore, such technologies enable perpetrators of family violence to overcome geographical boundaries and continue their abuse post‐separation, particularly where there are children of the relationship. This paper reviews and classifies the existing literature on technology‐facilitated abuse, identifying predominant themes in relation to context and focus, as well as the gaps. New forms of criminality as well as new ways to perpetrate existing forms of criminality are described.  相似文献   
177.
178.
Extracurricular involvement in the school‐age years has widespread potential benefits for children's subsequent socioemotional development, especially for low‐income youth. However, there is a dearth of research on interventions aimed at increasing school‐age extracurricular involvement in low‐income youth. Thus, the present study aimed to test the collateral effect of a brief, family‐focused intervention for low‐income families, the Family Check‐Up, on children's school‐age extracurricular involvement via improvements in maternal positive behavior support (PBS) in early childhood. The sample (n = 630, 50% female, 50% White, 28% Black/African American) represented a subsample of families from the Early Steps Multisite Study. At the age of two, families were randomly assigned to the Family Check‐Up or Women, Infants, and Children Nutritional Supplement Services as usual. Mother‐child dyads participated in observed interaction tasks at child ages 2 and 3 that were subsequently coded to assess PBS. Primary caregivers reported on children's school‐age extracurricular involvement at ages 7.5, 8.5, and 9.5. Results indicated that although there was not a direct path between intervention status and children's school‐age extracurricular involvement, a significant indirect path emerged from intervention group to changes in PBS between ages 2 to 3 to children's school‐age extracurricular involvement. The results are discussed in terms of implications for designing preventive interventions in early childhood that promote extracurricular involvement at school‐age, particularly for children at risk for maladaptive outcomes.  相似文献   
179.
180.
In this article the author argues that one of the prime organizational imperatives for the development of a responsive, operational, ‘corporate social policy’ must be reform of the strategic planning process. Indeed he argues that this reform is the essential pre-requisite to making the true integration of social responsibility and business needs.  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