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   1800篇
  免费   56篇
管理学   225篇
民族学   26篇
人才学   1篇
人口学   235篇
丛书文集   4篇
理论方法论   169篇
综合类   32篇
社会学   768篇
统计学   396篇
  2024年   5篇
  2023年   20篇
  2022年   30篇
  2021年   47篇
  2020年   72篇
  2019年   117篇
  2018年   157篇
  2017年   153篇
  2016年   118篇
  2015年   65篇
  2014年   102篇
  2013年   298篇
  2012年   108篇
  2011年   65篇
  2010年   64篇
  2009年   54篇
  2008年   49篇
  2007年   38篇
  2006年   39篇
  2005年   31篇
  2004年   32篇
  2003年   20篇
  2002年   22篇
  2001年   20篇
  2000年   12篇
  1999年   11篇
  1998年   15篇
  1997年   10篇
  1996年   15篇
  1995年   13篇
  1994年   8篇
  1993年   2篇
  1992年   9篇
  1991年   3篇
  1990年   2篇
  1989年   2篇
  1988年   2篇
  1987年   4篇
  1985年   3篇
  1984年   2篇
  1983年   2篇
  1976年   1篇
  1975年   1篇
  1974年   1篇
  1973年   1篇
  1972年   1篇
  1971年   2篇
  1969年   1篇
  1968年   2篇
  1964年   1篇
排序方式: 共有1856条查询结果,搜索用时 15 毫秒
911.
This article analyzes the links between migratory processes and the evolution of nationality legislation in Spain. We argue that this case challenges the theoretical models that link immigration to liberalizing reforms in citizenship law. Despite large‐scale immigration experienced over the last two decades, Spanish nationality law has remained strongly focused on keeping ties with Spanish communities abroad. To account for the high degree of stability of Spanish citizenship law we structure our analysis along three basic lines: the historical conceptions derived from Spain's past as a colonial power, as well as its tradition as a country of emigration; the lack of incentives for political actors to introduce the reform of citizenship law in the political agenda; and the strategies adopted by those political actors in relation to the politicization of immigration.  相似文献   
912.
The complex triparametric Pearson (CTP) distribution is a flexible model belonging to the Gaussian hypergeometric family that can account for over- and underdispersion. However, despite its good properties, not much attention has been paid to it. So, we revive the CTP comparing it with some well-known distributions that cope with overdispersion (negative binomial, generalized Poisson and univariate generalized Waring) as well as underdispersion (Conway–Maxwell–Poisson (CMP) and hyper-Poisson (HP)). We make a simulation study that reveals the performance of the CTP and shows that it has its own space among count data models. In this sense, we also explore some overdispersed datasets which seem to be more appropriately modelled by the CTP than by other usual models. Moreover, we include two underdispersed examples to illustrate that the CTP can provide similar fits to the CMP or HP (sometimes even more accurate) without the computational problems of these models.  相似文献   
913.
The work–family literature is dominated by studies of white middle-class workers. In this study, we sought to expand this focus by examining work–family issues from the perspective of Mexicans who have immigrated to the USA within the past five years. Using data from qualitative in-depth interviews (N?=?22) and quantitative structured interviews (N?=?150), we documented the work–family experiences associated with immigration, and we examined the extent to which these experiences differed by gender as well as their mental health effects. The in-depth interviews clearly indicated that separation from family and community was a common and poignant strain experienced by Mexican immigrants who came to the USA to find work, and that these experiences did not differ between women and men. Quantitative analyses corroborated the qualitative findings by indicating women and men had similar levels of work–family strain. Analyses also indicated that higher levels of work–family strain were associated with more perceived stress, anxiety and depression, and that these associations did not differ between women and men. Finally, modest evidence suggested that the effects of work–family strain on mental health may be lower when the realities experienced by immigrants in finding employment and sending money home matched their expectations. This study adds a new voice to the work–family literature and the context and results make clear the tension between work and family: families frequently benefit from adults’ paid work, but this paid work is not without costs.  相似文献   
914.
915.
916.
It is desirable to strive for uniformity in decisions on social assistance. By presenting hypothetical new clients to social workers and asking for decisions, we investigated the occurrence of lack of agreement in decision-making. Surveys were made in Stockholm, Göteborg and Malmö. The results demonstrated variation in the assessment of applications for social assistance between the cities as well as within parts of the same city and between individual social workers in the same office. The reasons for these variations are discussed.  相似文献   
917.
918.
919.
Current methods for estimating feral pigeon (Columba livia f. domestica) population size and for monitoring population trends are mainly based on indices, which according to the current literature on wildlife census methods often produce biased results. Distance Sampling techniques have never been used in this context, even though they could theoretically produce absolute abundance estimates at relatively low costs. The aim of this paper was to investigate the performance of Distance Sampling to census feral pigeons, and to compare these results with those obtained by using Quadrate Counts, a widespread method for monitoring these birds. Surveys were performed in Pisa (Italy) in two different periods of the year 2004 (end of January–beginning of February, and November), which correspond to minimum (January–February) and maximum (November) numbers for pigeon populations. We considered 40 line transects each about 250 m long for Distance Sampling, and 40 250 × 250 m cells for Quadrate Counts. In both cases, sampling units were randomized in a stratified design. In contrast to Quadrate Counts, Distance Sampling detected the predicted increase of abundance from January–February to November with an acceptable precision and no increase of costs per survey. Even though the possible biases (due to the not rigorously random distribution of transects and to the spiked nature of collected distance data) should be further investigated, results suggest that Distance Sampling is a viable and efficient alternative to the traditional methods used to estimate feral pigeons population size and to monitor trends.  相似文献   
920.
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