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   2820篇
  免费   163篇
管理学   331篇
民族学   39篇
人才学   1篇
人口学   321篇
丛书文集   2篇
理论方法论   231篇
综合类   63篇
社会学   1381篇
统计学   614篇
  2024年   5篇
  2023年   38篇
  2022年   35篇
  2021年   51篇
  2020年   124篇
  2019年   125篇
  2018年   232篇
  2017年   264篇
  2016年   200篇
  2015年   123篇
  2014年   148篇
  2013年   488篇
  2012年   243篇
  2011年   117篇
  2010年   110篇
  2009年   88篇
  2008年   88篇
  2007年   64篇
  2006年   61篇
  2005年   47篇
  2004年   44篇
  2003年   49篇
  2002年   37篇
  2001年   35篇
  2000年   22篇
  1999年   11篇
  1998年   10篇
  1997年   12篇
  1996年   8篇
  1995年   9篇
  1994年   9篇
  1993年   6篇
  1992年   9篇
  1991年   9篇
  1990年   7篇
  1989年   12篇
  1988年   8篇
  1987年   4篇
  1986年   5篇
  1985年   4篇
  1984年   2篇
  1979年   2篇
  1978年   2篇
  1977年   2篇
  1975年   3篇
  1974年   1篇
  1973年   3篇
  1972年   1篇
  1971年   2篇
  1967年   1篇
排序方式: 共有2983条查询结果,搜索用时 15 毫秒
991.
992.
993.
This study examines the relationships among variables that were likely to mediate the effects of exposure to domestic violence on children's internalizing problems (i.e., children's appraisals of domestic violence and their perceptions of family relationships). The study was conducted with 79 children exposed to domestic violence, including 41 boys and 38 girls, aged between 9 and 12 years old. Indicators used for children's appraisals of violence were attribution of blame and perceived threat. Children's perceptions of family relationships were based on their levels of parentification and the degree of their loyalty conflicts. A path analysis was used to verify the predictive model's pathways and to test the multiple mediator effects. Findings confirm the contribution of mediating variables and also reflect the association between self-blame and children's parentification. The results stress the relevance of evaluating the combined role of different potential mediators to provide a better understanding of the impact of domestic violence on children.  相似文献   
994.
Marco Pecoraro 《LABOUR》2014,28(3):309-337
Using two periods' panel data from the Swiss Graduate Survey, this study examines the incidence, persistence and wage effects of overeducation. An alternative measure of overeducation that accounts for graduate heterogeneity in perceived skills mismatch is used. This analysis differs from previous panel data studies in that two estimation methods are applied to control for unobserved ability. Results indicate that graduates who are overeducated and mismatched in skills are the most penalized in terms of earnings. This evidence is still valid when unobserved ability is accounted for, whereas the pay penalty is no more significant for graduates who are overeducated but matched in skills. This result is robust to different definitions of perceived skills mismatch and is consistent with the notion that apparent overeducation reflects a lack of unobserved attributes, such as ability.  相似文献   
995.
Early adulthood represents a period of transition that is marked by change and exploration. For some, this transition is uncomplicated, yet for others, it is problematic. While many studies have explored factors that predict adjustment in childhood and adolescence, substantially less is known about childhood factors that predict adjustment during the transition into adulthood. Furthermore, it remains unclear whether childhood factors that predict adult adjustment differ between African American and Caucasian males. Accordingly, the current study examined childhood predictors of early adult (age 19–20) adjustment in a community sample of 397 African American and Caucasian males. Findings indicated that African American and Caucasian males who experienced high levels of peer delinquency, depressive symptoms, and conflicted parent–child communication in childhood were more likely to experience adjustment issues in early adulthood. For African American males, low academic achievement was important for predicting adult adjustment, while low organization involvement uniquely predicted adult adjustment for Caucasian males.  相似文献   
996.
This article describes the annual evolution of nuptiality in Spain from the beginning of the last century up to the present day. The analysis is based on data on first marriages from population registration data (Movimiento Natural de Población) after various adjustment and estimation operations. This source has an advantage with respect to census data, since it allows us to follow the annual nuptiality fluctuations that are very sensitive to prevailing social and economic conditions. Over the long term, the phases of nuptiality in Spain are comparable to those observed in Western Europe. However, leaving aside the period disturbed by the Civil War (1936–1939), Spain does exhibit some particular features: a long interlude from 1940 to 1959 marked by late marriage, rooted in the long depression of the Spanish economy; a prolonged rise in nuptiality which lasted until the end of the 1970s, corresponding to the late arrival of the first oil shock in Spain; and finally, a certain delay in the decline of marriage, accompanied—since the early 2000s only—by a parallel diffusion of cohabitation. Last, Spain is converging with Europe in another aspect that is seldom taken into account. While, from 1950 to 1980, it was one of the few European countries to register a first marriage rate unfavourable to women, the reversal of this trend since the 1980s has brought Spain closer to the majority of its neighbours.  相似文献   
997.
Consideration of reference systems for semivalues leads us to a global representation of the action of a semivalue on a game. Using this representation, we show how to modify semivalues to take account of coalition structures on the player set. The players' allocations according to a semivalue, including a modified semivalue, can be computed by means of products of matrices obtained from the multilinear extension of the game.  相似文献   
998.
The gearing adjustment is approached axiomatically. The gearing adjustment defines a capital maintenance concept; the revaluation criteria compatible with it are investigated. It is proved that one and only one kind of revaluation criterion is compatible with the gearing adjustment.  相似文献   
999.
Logical principles, in particular the law of noncontradiction and the law of exclusion of middle term, play different roles at different levels of discourse: valid formulae in an axiomatic calculus, methodological requirements (of consistency and completeness) for formalized systems. When postulated as formal laws, —pvp and —(p·—p), they are totally interdefinable and equivalent as well (DeMorgan's transformations are proof of this). If postulated as methodological requirements, the principles are not equivalent, although they could still be said in some sense to be interdefinable (the existence of consistent yet incomplete systems shows that the requirements are not equivalent; still, completeness of a system can be defined in terms of consistency of another system which keeps a definite relationship with the first one).There exists a third level of discourse: scientific praxis. At this level, the principles come even farther apart: they neither have the same logical value nor is one definable in terms of the other. However, they keep a family resemblance which justifies our dealing with them jointly. Let us call the principles at this level pragmatic imperatives. They deal with paradoxes, which are of two types: knots (conflicts) and blanks (gaps in the scientific pattern). The left-hand pragmatic imperative says: Be intolerant with knots, try to remove (dissolve) them. The right-hand pragmatic imperative says: Try to remove (fill) all blanks. The knot-removing and the blank-dissolving imperatives are prior to and more important than the laws of noncontradiction and excluded middle and the requirements of consistency and completeness. Logical principles are not prime categories: pragmatic imperatives are primordial.  相似文献   
1000.

When heterogeneous players make strategic investment decisions in multi-stage contests, they might conserve resources in a current contest to spend more in a subsequent contest, if the degree of heterogeneity in the current (subsequent) contest is sufficiently large (small). We confirm these predictions using data from German professional soccer, in which players are subject to a one-match ban if they accumulate five yellow cards. Players with four yellow cards facing the risk of being suspended for the next match are (i) less likely to be fielded when the heterogeneity in the current match increases and (ii) more likely to receive a fifth yellow card in the current match when heterogeneity in the next match increases or heterogeneity in the next match but one (when they return from their ban) decreases.

  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