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   1662篇
  免费   58篇
  2023年   11篇
  2022年   8篇
  2020年   20篇
  2019年   21篇
  2018年   31篇
  2017年   35篇
  2016年   42篇
  2015年   44篇
  2014年   34篇
  2013年   161篇
  2012年   61篇
  2011年   65篇
  2010年   45篇
  2009年   48篇
  2008年   70篇
  2007年   60篇
  2006年   69篇
  2005年   52篇
  2004年   58篇
  2003年   66篇
  2002年   65篇
  2001年   22篇
  2000年   22篇
  1999年   29篇
  1998年   36篇
  1997年   38篇
  1996年   25篇
  1995年   31篇
  1994年   31篇
  1993年   34篇
  1992年   32篇
  1991年   23篇
  1990年   25篇
  1989年   20篇
  1988年   16篇
  1987年   21篇
  1986年   17篇
  1985年   21篇
  1984年   15篇
  1983年   21篇
  1982年   15篇
  1981年   25篇
  1980年   21篇
  1979年   24篇
  1978年   16篇
  1977年   12篇
  1976年   20篇
  1975年   8篇
  1973年   7篇
  1971年   5篇
排序方式: 共有1720条查询结果,搜索用时 31 毫秒
991.
992.
993.
The purpose of this study was to examine the relationship between religiosity and sexual and reproductive health (SRH) knowledge and awareness of campus SRH services among college students on a racially and ethnically diverse college campus. The sample included 996 undergraduate students at a large public university in California. For women, there was a consistent pattern across religious affiliations of more frequent attenders reporting lower SRH knowledge than less frequent attenders. These findings suggest that higher rates of religious attendance among Catholic, Protestant, and Evangelical women pose a risk for lower SRH knowledge. The results suggest the need for SRH outreach and educational materials targeting men in general, who had lower levels of SRH knowledge and awareness of SRH services overall, and taking religiosity into account, particularly with regard to women.  相似文献   
994.
Going public with our research is both an “art” and a “science.” It involves elements of “vulnerability” and elements of “resiliency,” two key themes that have emerged in my program of research on domestic violence and religion. I harness the concepts of vulnerability and resiliency to argue that public engagement involves the scholar in an ongoing negotiation between the science and the art of disseminating his or her research results. The article concludes with references to our web‐based resources ( http://www.theraveproject.org ) and the way we have used stained glass to tell the story of research results.  相似文献   
995.
Motivation is often used as a predictor of a problematic style of video game engagement, implying that individuals' gaming undermines optimal functioning. Drawing from recent advances in Self‐Determination Theory (SDT), the present study explores the links between gaming motivations, the daily frustration of basic psychological needs, and reports of problematic video gaming (PVG). A sample of 1029 participants (72.8% male; M = 22.96 years; SD = 4.13 years) completed items regarding their gaming engagement and gaming motivation as well as their experience of needs frustration and PVG symptoms. Results revealed positive associations between gaming motivations and PVG, and between daily needs frustration and PVG. Finally, after comparing several competing models, a mediational model whereby needs frustration explained the association between individuals' gaming motivation and PVG emerged as best fitting the data. The discussion addresses the theoretical and practical implications of these findings in the context of recent research.  相似文献   
996.
There is a recent increase in interest of Bayesian analysis. However, little effort has been made thus far to directly incorporate background knowledge via the prior distribution into the analyses. This process might be especially useful in the context of latent growth mixture modeling when one or more of the latent groups are expected to be relatively small due to what we refer to as limited data. We argue that the use of Bayesian statistics has great advantages in limited data situations, but only if background knowledge can be incorporated into the analysis via prior distributions. We highlight these advantages through a data set including patients with burn injuries and analyze trajectories of posttraumatic stress symptoms using the Bayesian framework following the steps of the WAMBS-checklist. In the included example, we illustrate how to obtain background information using previous literature based on a systematic literature search and by using expert knowledge. Finally, we show how to translate this knowledge into prior distributions and we illustrate the importance of conducting a prior sensitivity analysis. Although our example is from the trauma field, the techniques we illustrate can be applied to any field.  相似文献   
997.
Depression in low-income Latino populations can be treated using group cognitive behavioral therapy (GCBT). However, effective delivery of GCBT for depression in primary care settings is often impeded by high dropout rates and poor homework adherence. In this study, we describe the structure, processes, and outcomes (including attendance, homework completion, and symptom measures) of GCBT for Spanish-speaking Latino patients with depression in an urban public sector primary care setting. For this study, 96 Latino patients in a primary care clinic participated in at least 1 session of GCBT. Although depressive symptoms among these patients, as measured by the PHQ-9, significantly decreased during treatment, attendance and homework completion were limited. Even with a strategy in place to allow patients to continue in treatment after missing several sessions, 23% of patients dropped out of therapy following their initial session, and approximately half of all patients completed less than 50% (or 8) therapy sessions. Homework was only completed 23% of the time it was checked. Greater session attendance prospectively predicted lower depressive symptoms over time. We discuss potential strategies to increase engagement, treatment effects, and symptom reduction for depression in primary care settings.  相似文献   
998.
Our aims are to (1) set forth a multiprinciple system for selecting among clinical trials competing for limited space in an immunotherapy production facility that supplies products under investigation by scientific investigators; (2) defend this system by appealing to justice principles; and (3) illustrate our proposal by showing how it might be implemented. Our overarching aim is to assist manufacturers of immunotherapeutic products and other potentially breakthrough experimental therapies with the ethical task of prioritizing requests from scientific investigators when production capacity is limited.  相似文献   
999.
1000.
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