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   782篇
  免费   38篇
管理学   119篇
民族学   14篇
人口学   91篇
理论方法论   71篇
综合类   11篇
社会学   361篇
统计学   153篇
  2023年   22篇
  2022年   6篇
  2021年   5篇
  2020年   26篇
  2019年   32篇
  2018年   49篇
  2017年   74篇
  2016年   51篇
  2015年   32篇
  2014年   39篇
  2013年   148篇
  2012年   38篇
  2011年   23篇
  2010年   33篇
  2009年   22篇
  2008年   30篇
  2007年   14篇
  2006年   26篇
  2005年   16篇
  2004年   9篇
  2003年   7篇
  2002年   8篇
  2001年   13篇
  2000年   17篇
  1999年   8篇
  1998年   8篇
  1997年   8篇
  1996年   3篇
  1995年   2篇
  1994年   3篇
  1993年   4篇
  1992年   3篇
  1991年   2篇
  1990年   4篇
  1989年   7篇
  1988年   5篇
  1985年   3篇
  1984年   2篇
  1983年   2篇
  1982年   5篇
  1981年   2篇
  1980年   3篇
  1978年   1篇
  1973年   1篇
  1971年   2篇
  1967年   1篇
  1964年   1篇
排序方式: 共有820条查询结果,搜索用时 31 毫秒
41.
This study proposes a usefulalternative to the ``aggregate deprivationindex' which is used to measure the well-beingsof individuals in different countries orgeographic locations. Furthermore, we alsopropose an improvement index which alleviateswell known difficulties associated withovertime comparisons of ``aggregate deprivationindex'. While deriving our indexes, we pursuedan economic approach to index numbers theoryand relied on the assumptions of optimizingbehavior. The proposed achievement index hasits roots in the theory of quantity indexeswhose axiomatic properties are wellestablished. The roots of our improvement indexon the other hand, is well grounded in theproductivity growth literature. The study alsoprovides a numerical example.  相似文献   
42.
Although attitudes toward homosexuality have become more liberal, particularly in industrialized Western countries, there is still a great deal of variance in terms of worldwide levels of homonegativity. Using data from the two most recent waves of the World Values Survey (1999–2004, 2005–2009), this article seeks to explain this variance by means of a multilevel analysis of 79 countries. We include characteristics on the individual level, as age or gender, as well as aggregate variables linked to specificities of the nation-states. In particular, we focus on the religious denomination of a person and her religiosity to explain her attitude toward homosexuality. We find clear differences in levels of homonegativity among the followers of the individual religions.  相似文献   
43.
We focus on the construction of confidence corridors for multivariate nonparametric generalized quantile regression functions. This construction is based on asymptotic results for the maximal deviation between a suitable nonparametric estimator and the true function of interest, which follow after a series of approximation steps including a Bahadur representation, a new strong approximation theorem, and exponential tail inequalities for Gaussian random fields. As a byproduct we also obtain multivariate confidence corridors for the regression function in the classical mean regression. To deal with the problem of slowly decreasing error in coverage probability of the asymptotic confidence corridors, which results in meager coverage for small sample sizes, a simple bootstrap procedure is designed based on the leading term of the Bahadur representation. The finite-sample properties of both procedures are investigated by means of a simulation study and it is demonstrated that the bootstrap procedure considerably outperforms the asymptotic bands in terms of coverage accuracy. Finally, the bootstrap confidence corridors are used to study the efficacy of the National Supported Work Demonstration, which is a randomized employment enhancement program launched in the 1970s. This article has supplementary materials online.  相似文献   
44.
45.
Engagement in the context of child protection is of significant international interest, as the participation of family is a central notion in child and family social work. Drawing on in‐depth, semistructured interviews with a sample of 26 child protection workers in 1 region in Estonia, this article reports the findings of the participants' perspectives on family engagement in the context of child protection assessment. Child protection workers perceive the engagement related to 3 aspects: first, it is associated to the acts of the worker; second, it is associated to parental part of actions—depending on parents themselves; and third, engagement was seen as “doing together” with the family, referring to partnership. The aim of the engagement was mainly considered in the terms of empowerment—empowering family to cope on their own and to take charge of their lives. The negative image of child protection was recognised as one of the main barriers to the family engagement. Understanding the family and their situation was seen as the basis for a trusting relationship, being the most crucial factor to promoting family engagement.  相似文献   
46.
Games and toys are irreplaceable basic needs of children of almost every age. They are also some of the most significant traces of culture. Some of our games and toys lost their original functions, and it is not remembered why they were functionally significant in Turkish Cypriot culture. Families and cultural identity also play a major role regarding different factors leading to changes in toy selection. The purpose of this study is to explore the knowledge and opinions of families regarding games and, in particular, toy selection for 6–12 year old children of Turkish Cypriot families. A survey was administered to 100 households in North Cyprus, and was used as a data collection tool. It was found that the most important factors in the selection of children’s games and toys were (1) the economic opportunities, and (2) children’s desires for toys after seeing them with their friends. A considerable number of families in Northern Cyprus see game-toy selection as important in a child’s social, psychomotor, mental, and cultural construction. Families, especially those living with difficulties, indicated that they cannot afford enough time to encourage playing traditional games. Although new versions of traditional games and toys are being developed and used, it is seen that educated and high-income families are more conscious about the importance of having information about them than others.  相似文献   
47.
In this article, two new powerful tests for cointegration are proposed. The general idea is based on an intuitively appealing extension of the traditional, rather restrictive cointegration concept. In this article, we allow for a nonlinear, but most importantly a different, asymmetric convergence process to account for negative and positive changes in our cointegration approach. Using Monte Carlo simulations we verify, that the estimated size of the first test depends on the unknown value of a signal-to-noise ratio q. However, our second test—which is based on the original ideas of Kanioura and Turner—is more successful and robust in the sense that it works in all of the different evaluated situations. Furthermore it is shown to be more powerful than the traditional residual based Enders and Siklos method. The new optimal test is also applied in an empirical example in order to test for potential nonlinear asymmetric price transmission effects on the Swedish power market. We find that there is a higher propensity for power retailers to rapidly and systematically increase their retail electricity prices subsequent to increases in Nordpool's wholesale prices, than there is for them to reduce their prices subsequent to a drop in wholesale spot prices.  相似文献   
48.
In this study, we investigate linear regression having both heteroskedasticity and collinearity problems. We discuss the properties related to the perturbation method. Important observations are summarized as theorems. We then prove the main result that states the heteroskedasticity-robust variances can be improved and that the resulting bias is minimized by using the matrix perturbation method. We analyze a practical example for validation of the method.  相似文献   
49.
50.
One of the most prevalent problems in face transplant patients is an inability to generate facial expression of emotions. The purpose of this study was to measure the subjective recognition of patients’ emotional expressions by other people. We examined facial expression of six emotions in two facial transplant patients (patient A = partial, patient B = full) and one healthy control using video clips to evoke emotions. We recorded target subjects’ facial expressions with a video camera while they were watching the clips. These were then shown to a panel of 130 viewers and rated in terms of degree of emotional expressiveness on a 7-point Likert scale. The scores for emotional expressiveness were higher for the healthy control than they were for patients A and B, and these varied as a function of emotion. The most recognizable emotion was happiness. The least recognizable emotions in Patient A were fear, surprise, and anger. The expressions of Patient B scored lower than those of Patient A and the healthy control. The findings show that partial and full-face transplant patients may have difficulties in generating facial expression of emotions even if they can feel those emotions, and different parts of the face seem to play critical roles in different emotional expressions.  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