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   367篇
  免费   17篇
管理学   40篇
民族学   8篇
人口学   34篇
理论方法论   41篇
综合类   15篇
社会学   210篇
统计学   36篇
  2024年   1篇
  2023年   6篇
  2022年   5篇
  2021年   11篇
  2020年   16篇
  2019年   24篇
  2018年   22篇
  2017年   23篇
  2016年   28篇
  2015年   21篇
  2014年   11篇
  2013年   53篇
  2012年   17篇
  2011年   9篇
  2010年   12篇
  2009年   15篇
  2008年   9篇
  2007年   17篇
  2006年   15篇
  2005年   9篇
  2004年   6篇
  2003年   8篇
  2002年   6篇
  2001年   7篇
  2000年   5篇
  1999年   4篇
  1998年   2篇
  1996年   2篇
  1995年   2篇
  1993年   2篇
  1992年   2篇
  1991年   2篇
  1990年   1篇
  1989年   1篇
  1988年   2篇
  1986年   2篇
  1985年   2篇
  1983年   1篇
  1982年   1篇
  1974年   1篇
  1972年   1篇
排序方式: 共有384条查询结果,搜索用时 15 毫秒
41.
We aimed to explore the association between age of onset of gambling problems and current psychopathological and clinical status, personality profile and therapeutic outcome in a sample of pathological gamblers. A total of 904 consecutive pathological gambling patients were administered several instruments about gambling behavior, psychopathology and personality. They received a 4-month cognitive-behavioral group treatment. Information of dropouts and relapses during treatment was registered. Older age of onset of gambling problems was associated with higher general psychopathology (SCL-90-R Paranoid Ideation, Psychoticism, Depression; P < 0.015). Younger age of onset was related to greater severity of pathological gambling (P < 0.015), higher novelty seeking, and lower self-directedness (P < 0.015). No statistically significant association was found between age of onset and relapse and dropouts during treatment. Age of onset of gambling problems seems to influence the clinical presentation of pathological gambling but not treatment outcome.  相似文献   
42.
Highly skewed outcome distributions observed across clusters are common in medical research. The aim of this paper is to understand how regression models widely used for accommodating asymmetry fit clustered data under heteroscedasticity. In a simulation study, we provide evidence on the performance of the Gamma Generalized Linear Mixed Model (GLMM) and log-Linear Mixed-Effect (LME) model under a variety of data-generating mechanisms. Two case studies from health expenditures literature, the cost of strategies after myocardial infarction randomized clinical trial on the cost of strategies after myocardial infarction and the European Pressure Ulcer Advisory Panel hospital prevalence survey of pressure ulcers, are analyzed and discussed. According to simulation results, the log-LME model for a Gamma response can lead to estimations that are biased by as much as 10% of the true value, depending on the error variance. In the Gamma GLMM, the bias never exceeds 1%, regardless of the extent of heteroscedasticity, and the confidence intervals perform as nominally stated under most conditions. The Gamma GLMM with a log link seems to be more robust to both Gamma and log-normal generating mechanisms than the log-LME model.  相似文献   
43.
Principal points are cluster means for theoretical distributions. A discriminant methodology based on principal points is introduced. The principal point classification method is useful in clinical trials where the goal is to distinguish and differentiate between different treatment effects. Particularly, in psychiatric studies where placebo response rates can be very high, the principal point classification is illustrated to distinguish specific drug responders from non-specific placebo responders.  相似文献   
44.
45.
Exploiting the exogenous variation in user fees caused by a Swedish childcare reform, we are able to identify the causal effect of childcare costs on fertility in a context in which childcare enrollment is almost universal, user fees are low, and labor force participation of mothers is very high. Anticipation of a reduction in childcare costs increased the number of first and higher-order births, but only seemed to affect the timing of second births. For families with many children we also find a marginally significant negative income effect on fertility.  相似文献   
46.
In this study, we investigated whether incorporating eye tracking into cognitive interviewing is effective when pretesting survey questions. In the control condition, a cognitive interview was conducted using a standardized interview protocol that included pre-defined probing questions for about one-quarter of the questions in a 52-item questionnaire. In the experimental condition, participants’ eye movements were tracked while they completed an online version of the questionnaire. Simultaneously, their reading patterns were monitored for evidence of response problems. Afterward, a cognitive interview was conducted using an interview protocol identical to that in the control condition. We compared both approaches with regard to the number and types of problems they detected. We found support for our hypothesis that cognitive interviewing and eye tracking complement each other effectively. As expected, the hybrid method was more productive in identifying both questionnaire problems and problematic questions than applying cognitive interviewing alone.  相似文献   
47.
A gender divide in gambling is commonly observed among college populations. This study examines whether settings where students gamble on poker mediate the relationship between gender and poker gambling behaviours. Undergraduate poker players, 126 females and 242 males, were randomly sampled from three universities in Montreal, Canada. Three outcomes measuring risky behaviours were considered: severity of gambling problems as measured by the Problem Gambling Severity Index (PGSI), past-year poker spending and past-year poker debt. Multiple mediation analyses were conducted. The effect of gender on outcomes was analysed through three putative mediators: gambling on poker in private residences, in public locations or on the Internet. Male gender positively relates to risky gambling behaviours and occurrence of gambling in various settings. Risky gambling behaviours are positively related to gambling in various settings. Overall, the occurrence of playing poker in public locations and on the Internet emerged as significant mediators in relation to PGSI score, past-year poker spending and past-year poker debt. Given the nature of the processes by which gender is related to risky gambling behaviours among undergraduate students, gambling needs to be understood through a perspective that focuses as much on contexts as it does on individuals.  相似文献   
48.
This article examines how the social and political contexts in receiving countries affect the transnational political practices of migrants and refugees, such as their mobilization around political events in their homeland. The case study explores the political participation of Turks and Kurds in Germany and the Netherlands in its full complexity, that is in both the immigration country and in homeland politics. The findings suggest that transnational political practices should not be reduced to a function of the political opportunity structures of particular receiving countries for two main reasons: (a) more inclusive political structures, which provide for more participation and co‐operation on immigrant political issues, may at the same time, and for that very reason, serve to exclude dialogue on homeland politics; (b) homeland political movements may draw on a different range of resources than their immigrant political counterparts, including those outside the local political institutional context.  相似文献   
49.
This article analyses informal caregiving and volunteering in organizations over 17 years in Sweden, with a focus on links between these two forms of unpaid activities. The discussion is based on results from a national survey that was repeated four times in the period 1992–2009. Links were found between the different types of activities. In all four studies a substantial group of the population was involved both in informal caregiving and volunteering. This group of ‘active citizens’ are commonly also engaged in informal social networks. This ‘double active’ group had increased over time and they provide a substantial amount of hours of involvement. Patterns outlined in this article demonstrate that unpaid activities represent a multifaceted phenomenon, and that the boundaries between informal caregiving and volunteering as forms of engagement may be more fluid than has previously been acknowledged. The results challenge the literature in which informal caregiving is viewed as a major obstacle to volunteering. At the same time, however, informal caregiving in general was found to be increasing. There might be reasons to be cautious about the possible risk that too much pressure on citizens for informal caregiving might jeopardize the type of double involvement that is outlined in this article.  相似文献   
50.
One of the most important factors affecting inequitable health opportunities is the work activity. The respective supervisor exerts influence on the subordinates’ health and well-being. This study investigates health-promoting leadership behavior among low-skilled, culturally diverse workforces through interviews with employees and managers of the lowest hierarchical level (N?=?53). Information and approachability as well as appreciative feedback and showing interest of the supervisor are identified as relevant target group specific leadership behavior. Health-promoting effects of work design, learning opportunities as well as strain the supervisors themselves suffer from were also examined.  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