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   529篇
  免费   56篇
管理学   32篇
民族学   8篇
人口学   45篇
丛书文集   4篇
理论方法论   78篇
综合类   6篇
社会学   382篇
统计学   30篇
  2024年   2篇
  2023年   9篇
  2022年   3篇
  2021年   8篇
  2020年   24篇
  2019年   37篇
  2018年   40篇
  2017年   65篇
  2016年   47篇
  2015年   22篇
  2014年   21篇
  2013年   93篇
  2012年   24篇
  2011年   21篇
  2010年   15篇
  2009年   16篇
  2008年   20篇
  2007年   21篇
  2006年   13篇
  2005年   14篇
  2004年   13篇
  2003年   12篇
  2002年   7篇
  2001年   5篇
  2000年   8篇
  1999年   2篇
  1998年   3篇
  1997年   4篇
  1996年   1篇
  1994年   2篇
  1993年   1篇
  1991年   1篇
  1990年   3篇
  1988年   1篇
  1985年   1篇
  1984年   2篇
  1983年   1篇
  1982年   2篇
  1978年   1篇
排序方式: 共有585条查询结果,搜索用时 406 毫秒
531.
532.
Three studies were conducted to determine whether differential patterns of categorization observed in studies using visual familiarization and object‐examining measures hold up as procedural confounds are eliminated. In Experiment 1, we attempted as direct a comparison as possible between visual and object‐examining measures of categorization. Consistent with previous reports, 9‐month‐old infants distinguished a basic‐level contrast (dog–horse) in the visual task, but not in the examining task. Experiment 2 was designed to reduce levels of nonexploratory activity in an examining task; 9‐month‐olds again failed to distinguish categories of dogs and horses. In Experiment 3, we adopted a paired‐comparison test format in the object‐examining task. Infants did display a novel category preference under paired testing conditions. The results suggest that the different patterns of categorization often seen in looking and touching tasks are a reflection, not of different categorization processes, but of the differential sensitivity of the tasks.  相似文献   
533.
The social functioning of 64 young adolescents (10‐ to 12‐year olds) was examined in relation to negative emotionality and regulation during early adolescence, as well as two, four, and six years earlier. Young adolescents who were viewed as relatively high in social functioning (i.e., high teacher‐rated school social competence; low mother‐ or father‐rated problem behavior) were generally viewed as relatively low on negative emotionality and high on regulatory abilities during early adolescence as well as two, four, and six years earlier. Furthermore, negative emotionality and regulation during early adolescence, and in some cases at previous time periods, contributed unique variance to the prediction of social functioning during early adolescence. Young adolescents who were consistently low in social functioning across time were higher on negative emotionality and lower on regulation than were young adolescents who were consistently high on social functioning over time.  相似文献   
534.
In the 1992 Ruby Ridge, Idaho, incident during which U.S. Marshal William Degan and Sammy and Vicki Weaver were killed, law enforcement and the Weavers socially constructed each other's roles. We focus on how the framing of what happened on Ruby Ridge changed. Drawing on Gamson's (1968) discussion of law enforcement strategies, we suggest that certain federal agencies were challenged about the justness of their actions. The Weavers, white separatists, and others tried to alter the dominant frame of the federal government from a legitimating one to that of unjust authority. To counter that, investigations by the Senate Subcommittee on Terrorism and the Department of Justice portrayed certain agents as incompetent rather than unjust. Various federal agencies “yielded ground” by recognizing mistakes, making payments to the Weavers and Kevin Harris, and charging one official and temporarily suspending others, but they maintained the legitimacy frame.  相似文献   
535.
This study tested the hypothesis that the effects of income and cumulative risk on the development of effortful control during preschool would be mediated by parenting. The study utilized a community sample of 306 children (36–40 months) representing the full range of family income, with 29 percent at or near poverty and 28 percent lower income. Two dimensions of effortful control (executive control and delay ability) were assessed at four time points, each separated by nine months, and growth trajectories were examined. Maternal warmth, negativity, limit setting, scaffolding, and responsiveness were observed. Above the effects of child cognitive ability, income, and cumulative risk, scaffolding predicted higher initial levels of executive control that remained higher across the study, and limit setting predicted greater gains in executive control. Parenting did not predict changes in delay ability. Significant indirect effects indicated that scaffolding mediated the effects of income and cumulative risk on growth in executive control. The findings suggest that parenting behaviors can promote effortful control in young children and could be targets of prevention programs in low‐income families.  相似文献   
536.
537.
This paper explores infant feeding practices and experiences of mothers in Canada and Norway, two countries where breastfeeding rates are relatively high. Based on interviews with 33 Canadian mothers and 27 Norwegian mothers, we also examine how mothers feel, think and talk about their infant feeding decisions and experiences, and examine similarities and divergences across their stories. Our findings reveal that infant feeding is very much organized according to the logic of the broader medical discourse, a finding which lends support to arguments that contemporary parenthood is characterized by a process of increasing medicalization. Our findings also reveal the existence of a broader culture of pressure, competition, judgement and surveillance regarding breastfeeding, suggesting that the high breastfeeding rates in these two countries are not merely a result of favourable structural conditions, but also of strong cultural expectations towards breastfeeding. We discuss our findings in connection with the broader argument that medical discourses and health professionals are becoming the primary authorities and moral gatekeepers of contemporary parenthood.  相似文献   
538.
This article elaborates on the impact of EU migration policies on African countries, taking Mali as a case study. Building upon fieldwork in the country, it argues that enhanced European involvement (EU and individual member states) has caused Mali to develop a more control-oriented dimension to its migration policy and to strengthen its links with European development actors and the Malian diaspora. While these reverberations of EU policies can be likened to what scholars have established for other African countries, Mali is unusual because of its large exposure to altered regional patterns of migration cooperation. Many of the regional refoulements and deportations end in Mali despite the fact (or, perhaps, because of the fact) that the official Malian state does little to regulate these operations. In the absence of official policy responses, civil society organizations have stepped in to provide returned migrants with basic care and reception.  相似文献   
539.
This paper examines a case study of a severely physically disabled man, Ralph, in terms of his interaction with his carers. He communicates using various systems of augmentative and alternative communication (AAC, such as symbol boards and high-tech devices), the vocabulary for which has mostly been selected for him by others. The starting point of the paper is the assumption that disabled people have traditionally held a disempowered position in society (relative to non-disabled people), and the question asked is to what extent is Ralph further disempowered by the limited vocabulary available to him in his AAC systems, and in the way others interact with him. The paper draws on the work of Bourdieu, according to whom ‘Language is not only an instrument of communication or even of knowledge, but also an instrument of power’ (1977, 648). I consider the tensions between the drive towards the empowerment of disabled individuals, as exemplified by the provision of AAC, and opposition to allowing access to certain types of vocabulary (especially expletives such as ‘the F word’), unless it is expressed in ‘the nicest possible way’.  相似文献   
540.
The marginalized frailty model is often used for the analysis of correlated times in survival data. When only two correlated times are analyzed, this model is often referred to as the Clayton–Oakes model [7,22]. With time-to-event data, there may exist multiple end points (competing risks) suggesting that an analysis focusing on all available outcomes is of interest. The purpose of this work is to extend the single risk marginalized frailty model to the multiple risk setting via cause-specific hazards (CSH). The methods herein make use of the marginalized frailty model described by Pipper and Martinussen [24]. As such, this work uses the martingale theory to develop a likelihood based on estimating equations and observed histories. The proposed multivariate CSH model yields marginal regression parameter estimates while accommodating the clustering of outcomes. The multivariate CSH model can be fitted using a data augmentation algorithm described by Lunn and McNeil [21] or by fitting a series of single risk models for each of the competing risks. An example of the application of the multivariate CSH model is provided through the analysis of a family-based follow-up study of breast cancer with death in absence of breast cancer as a competing risk.  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