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   1455篇
  免费   44篇
管理学   142篇
民族学   10篇
人才学   1篇
人口学   154篇
丛书文集   5篇
教育普及   1篇
理论方法论   163篇
综合类   8篇
社会学   891篇
统计学   124篇
  2023年   15篇
  2022年   7篇
  2021年   9篇
  2020年   22篇
  2019年   59篇
  2018年   50篇
  2017年   68篇
  2016年   50篇
  2015年   28篇
  2014年   53篇
  2013年   249篇
  2012年   43篇
  2011年   69篇
  2010年   30篇
  2009年   38篇
  2008年   42篇
  2007年   44篇
  2006年   44篇
  2005年   42篇
  2004年   38篇
  2003年   29篇
  2002年   36篇
  2001年   29篇
  2000年   22篇
  1999年   32篇
  1998年   18篇
  1997年   23篇
  1996年   27篇
  1995年   22篇
  1994年   18篇
  1993年   23篇
  1992年   20篇
  1991年   19篇
  1990年   17篇
  1989年   13篇
  1988年   9篇
  1987年   13篇
  1986年   20篇
  1985年   12篇
  1984年   9篇
  1983年   7篇
  1982年   8篇
  1981年   9篇
  1980年   6篇
  1979年   11篇
  1978年   7篇
  1976年   9篇
  1975年   6篇
  1973年   6篇
  1970年   4篇
排序方式: 共有1499条查询结果,搜索用时 15 毫秒
1.
In our zeal to deal with alcohol and drug abuse, we may have a distorted picture of what the majority of college students actually think about alcohol and drug use. Students in this study done at a public university located in the Deep South report being generally intolerant of substance abuse.  相似文献   
2.
Family therapy in Australia has recently begun a conversation with the indigenous people of this country. Part of this dialogue has involved family therapists listening to the stories of violence and oppression perpetrated against the Aboriginal people under the name of “protection”. This article is part of the ongoing exchange between family therapists and Kooris documenting the suffering of “the stolen generation”. Here two young people removed from their families as small children and raised in the same Aboriginal children's home, speak personally through their art, of an agonising search for family and cultural identity.  相似文献   
3.
4.
5.
Most strategies to prevent child sexual abuse rely on therapeutic work with abusers or direct work with children training them to recognize and resist molestation. However, many authors, activists and professionals in this field assert the need to challenge broader social attitudes towards sexuality and violence. In 1992 an attempt at such an intervention was employed by Edinburgh District Council in their “Zero Tolerance Campaign”. This was a public awareness campaign which aimed to increase people's understanding of the extent and nature of violence against women and girls and to emphasize that such crimes should not be tolerated. Through challenging misconceptions, encouraging public discussion and focusing on strategies to prevent such crimes, the campaign organizers hoped to transform the social climate which is conducive to the abuse of women at any age. This article explores public response to the Zero Tolerance Campaign and, in particular, focuses on reactions to the two advertisements which addressed the sexual abuse of girls.  相似文献   
6.
7.
8.
9.
Nonprofit organizations rely on the mission to attract resources and guide decision making. Increasingly, mission statements are recognized as a strong management tool that can motivate employees and keep them focused on the organization's purpose. This research investigated employee attitudes toward the mission in a youth and recreation service organization. In general, the employees expressed positive attitudes toward the organization's mission, and those attitudes were related to employee satisfaction and intentions to remain with the organization. However, dissatisfaction with pay tended to override employee's mission attachment as explanation of why they may leave the organization. The implication is that mission might be salient in attracting employees but less effective in retaining them.  相似文献   
10.
The benchmark dose (BMD) is an exposure level that would induce a small risk increase (BMR level) above the background. The BMD approach to deriving a reference dose for risk assessment of noncancer effects is advantageous in that the estimate of BMD is not restricted to experimental doses and utilizes most available dose-response information. To quantify statistical uncertainty of a BMD estimate, we often calculate and report its lower confidence limit (i.e., BMDL), and may even consider it as a more conservative alternative to BMD itself. Computation of BMDL may involve normal confidence limits to BMD in conjunction with the delta method. Therefore, factors, such as small sample size and nonlinearity in model parameters, can affect the performance of the delta method BMDL, and alternative methods are useful. In this article, we propose a bootstrap method to estimate BMDL utilizing a scheme that consists of a resampling of residuals after model fitting and a one-step formula for parameter estimation. We illustrate the method with clustered binary data from developmental toxicity experiments. Our analysis shows that with moderately elevated dose-response data, the distribution of BMD estimator tends to be left-skewed and bootstrap BMDL s are smaller than the delta method BMDL s on average, hence quantifying risk more conservatively. Statistically, the bootstrap BMDL quantifies the uncertainty of the true BMD more honestly than the delta method BMDL as its coverage probability is closer to the nominal level than that of delta method BMDL. We find that BMD and BMDL estimates are generally insensitive to model choices provided that the models fit the data comparably well near the region of BMD. Our analysis also suggests that, in the presence of a significant and moderately strong dose-response relationship, the developmental toxicity experiments under the standard protocol support dose-response assessment at 5% BMR for BMD and 95% confidence level for BMDL.  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