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   918篇
  免费   52篇
管理学   47篇
民族学   9篇
人口学   97篇
丛书文集   6篇
理论方法论   146篇
综合类   9篇
社会学   604篇
统计学   52篇
  2024年   2篇
  2023年   22篇
  2022年   6篇
  2021年   20篇
  2020年   30篇
  2019年   59篇
  2018年   52篇
  2017年   78篇
  2016年   39篇
  2015年   34篇
  2014年   43篇
  2013年   147篇
  2012年   38篇
  2011年   54篇
  2010年   31篇
  2009年   31篇
  2008年   35篇
  2007年   37篇
  2006年   27篇
  2005年   27篇
  2004年   30篇
  2003年   21篇
  2002年   13篇
  2001年   9篇
  2000年   10篇
  1999年   8篇
  1998年   7篇
  1997年   3篇
  1996年   3篇
  1995年   4篇
  1994年   7篇
  1993年   2篇
  1992年   2篇
  1991年   4篇
  1990年   1篇
  1989年   3篇
  1988年   6篇
  1987年   3篇
  1986年   1篇
  1985年   3篇
  1984年   1篇
  1983年   3篇
  1982年   2篇
  1981年   3篇
  1980年   2篇
  1977年   1篇
  1976年   3篇
  1972年   1篇
  1971年   2篇
排序方式: 共有970条查询结果,搜索用时 499 毫秒
61.
In recent years, the lesbian and gay “scene” of bars, nightclubs, and dance parties has been undergoing a structural decline in many Western cities. This article aimed to examine the relevance of the scene to same-sex attracted young adults amid these changes. An online survey was conducted with 572 same-sex attracted young women and men in Sydney. Only a minority of respondents participated in the scene at least weekly (16%), and the majority did not regard the scene as important to their leisure time (60%). However, respondents valued the scene as a space to connect with other same-sex attracted people and display same-sex affection without fear of hostility. Lesbian and gay identified respondents tended to be more socially engaged with the scene compared to other same-sex attracted respondents. The findings suggest that while the scene continues to be valued by many same-sex attracted young people, improved social attitudes have made participating in the scene less of an imperative.  相似文献   
62.
Using longitudinal data from the Fragile Families and Child Well‐being Study (N = 1,162) and the National Evaluation of Welfare‐to‐Work Strategies (N = 1,308), we estimate associations between material and instrumental support available to low‐income mothers and young children’s socioemotional well‐being. In multivariate OLS models, we find mothers’ available support is negatively associated with children’s behavior problems and positively associated with prosocial behavior in both data sets; associations between available support and children’s internalizing and prosocial behaviors attenuate but remain robust in residualized change models. Overall, results support the hypothesis that the availability of a private safety net is positively associated with children’s socioemotional adjustment.  相似文献   
63.
A significant proportion (4%, Australian Institute of Health and Welfare, 2008) of children and young people in Australia live in some form of residential care, usually in small group‐homes staffed by residential care workers in shifts. However, as Hawkins‐Rodgers (2007) points out, these placements are often not resourced to heal the effects of trauma and multiple attachment disruptions in their residents. The lack of an archetypal ‘family’ has led in the past to family therapists considering that there is little work to be done with such clients. This leaves such placements to be supported most frequently by clinicians who specialise in behaviour management and other linearly founded models of practice. The Alternate Care Clinic (ACC) is the first mental health service in New South Wales dedicated entirely to children and young people in out of home care with a high level of complex needs. This article examines the systemic therapeutic model the clinic has developed in the last two years. In particular, the article seeks to explore the importance of ‘meaning making’ in a diffuse parental system, particularly with regards to the term ‘family’. The complexities of working in this area and possible ways forward are illustrated with a closely worked case study.  相似文献   
64.
Both treatment efficacy and safety are typically the primary endpoints in Phase II, and even in some Phase III, clinical trials. Efficacy is frequently measured by time to response, death, or some other milestone event and thus is a continuous, possibly censored, outcome. Safety, however, is frequently measured on a discrete scale; in Eastern Cooperative Oncology Group clinical trial E2290, it was measured as the number of weekly rounds of chemotherapy that were tolerable to colorectal cancer patients. For the joint analysis of efficacy and safety, we propose a non-parametric, computationally simple estimator for the bivariate survival function when one time-to-event is continuous, one is discrete, and both are subject to right-censoring. The bivariate censoring times may depend on each other, but they are assumed to be independent of both event times. We derive a closed-form covariance estimator for the survivor function which allows for inference to be based on any of several possible statistics of interest. In addition, we derive its covariance with respect to calendar time of analysis, allowing for its use in sequential studies.  相似文献   
65.
We investigate the effect of unobserved heterogeneity in the context of the linear transformation model for censored survival data in the clinical trials setting. The unobserved heterogeneity is represented by a frailty term, with unknown distribution, in the linear transformation model. The bias of the estimate under the assumption of no unobserved heterogeneity when it truly is present is obtained. We also derive the asymptotic relative efficiency of the estimate of treatment effect under the incorrect assumption of no unobserved heterogeneity. Additionally we investigate the loss of power for clinical trials that are designed assuming the model without frailty when, in fact, the model with frailty is true. Numerical studies under a proportional odds model show that the loss of efficiency and the loss of power can be substantial when the heterogeneity, as embodied by a frailty, is ignored. An erratum to this article can be found at  相似文献   
66.
Disabled asylum seekers have been found to often experience extreme deprivation. Possible causes and solutions are explored, drawing on the experiences of disabled asylum seekers themselves as well as on a series of interviews with people working in the asylum and immigration sector. It is suggested that action is required to reduce immediate suffering, but that systemic change is needed to address the causes of this deprivation.  相似文献   
67.
This study examines how different types of international volunteering influence common program outcomes such as building organizational capacity, developing international relationships, and performing manual labor. Survey responses were collected from 288 development-oriented volunteer partner organizations operating in 68 countries. Data on the duration of volunteer service, the volunteers’ skill levels, and other variables were used to develop a rough typology of international volunteering. Binary logistic regression models then assessed differences in outcomes across five volunteering types. Findings suggest that future research needs to be more precise about how the nuances and complexity of diverse forms of international volunteering influence outcomes.  相似文献   
68.
Understanding how people view flash flood risks can help improve risk communication, ultimately improving outcomes. This article analyzes data from 26 mental models interviews about flash floods with members of the public in Boulder, Colorado, to understand their perspectives on flash flood risks and mitigation. The analysis includes a comparison between public and professional perspectives by referencing a companion mental models study of Boulder‐area professionals. A mental models approach can help to diagnose what people already know about flash flood risks and responses, as well as any critical gaps in their knowledge that might be addressed through improved risk communication. A few public interviewees mentioned most of the key concepts discussed by professionals as important for flash flood warning decision making. However, most interviewees exhibited some incomplete understandings and misconceptions about aspects of flash flood development and exposure, effects, or mitigation that may lead to ineffective warning decisions when a flash flood threatens. These include important misunderstandings about the rapid evolution of flash floods, the speed of water in flash floods, the locations and times that pose the greatest flash flood risk in Boulder, the value of situational awareness and environmental cues, and the most appropriate responses when a flash flood threatens. The findings point to recommendations for ways to improve risk communication, over the long term and when an event threatens, to help people quickly recognize and understand threats, obtain needed information, and make informed decisions in complex, rapidly evolving extreme weather events such as flash floods.  相似文献   
69.
70.
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