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   946篇
  免费   43篇
管理学   61篇
民族学   6篇
人口学   139篇
丛书文集   8篇
理论方法论   121篇
综合类   7篇
社会学   604篇
统计学   43篇
  2023年   4篇
  2021年   3篇
  2020年   14篇
  2019年   25篇
  2018年   26篇
  2017年   46篇
  2016年   30篇
  2015年   19篇
  2014年   28篇
  2013年   164篇
  2012年   28篇
  2011年   49篇
  2010年   26篇
  2009年   24篇
  2008年   38篇
  2007年   35篇
  2006年   23篇
  2005年   34篇
  2004年   33篇
  2003年   31篇
  2002年   29篇
  2001年   28篇
  2000年   21篇
  1999年   11篇
  1998年   10篇
  1997年   12篇
  1996年   15篇
  1995年   12篇
  1994年   12篇
  1993年   13篇
  1992年   16篇
  1991年   8篇
  1990年   9篇
  1989年   10篇
  1988年   9篇
  1987年   9篇
  1986年   4篇
  1985年   12篇
  1984年   6篇
  1983年   4篇
  1981年   4篇
  1980年   7篇
  1979年   11篇
  1978年   4篇
  1976年   5篇
  1975年   3篇
  1972年   3篇
  1965年   2篇
  1964年   2篇
  1961年   2篇
排序方式: 共有989条查询结果,搜索用时 15 毫秒
1.
The emerging digital transformation in the twenty‐first century is rapidly and significantly changing the business landscape. The fast‐changing activities, expectations and new modes of collaboration suggest it is time to review the current theoretical insights from strategic alliance (SA) research, which are based on assumptions from a different era. We therefore aim to stimulate multidisciplinary debate and theoretical reflections to better understand emerging paradoxes and challenges that contemporary firms face in the formation, evolution and dissolution of strategic alliances. Specifically, we offer alternative visions of SA research and suggest fresh applications or supplements of existing theoretical perspectives and research methods that can better address the research questions emerging from an era of digital transformation.  相似文献   
2.
The authors use an ecological framework and grounded theoretical analysis to explore the circumstances in which working‐class and low‐income custodial African American fathers gain custody of their children, their transition from part‐time to full‐time parents, and the role of support networks in enhancing or inhibiting these men's parenting. Twenty‐four men from an impoverished Midwestern urban area participated in the study. The findings suggest that these men, and perhaps others sharing their demographic profiles, generally become parents by default and are often reluctant to take on a full‐time, single parenting role. Adaptation to the role seems to be enhanced by these men's use of extended kin support networks and shared living arrangements. However, low wages, a lack of sufficient assistance from public assistance programs, and informal custody arrangements often inhibit their fathering.  相似文献   
3.
Ohne Zusammenfassung German translations by Monika Lütke-Daldrup.  相似文献   
4.
Major policy changes like the 1986 Tax Reform Act (TRA) in the United States provide natural experiments to study attitudinal and behavior responses to law. Surprisingly, public evaluations of the TRA became increasingly negative after passage, while general support for the tax system became more positive in response to the changes. To explain this puzzle, we propose a dynamic model of taxpayer attitudes that is consistent with the observed loose linkage between logically-connected concepts. We briefly review the political context, objectives and impacts of the 1986 Tax Reform Act, and present several studies testing the impact of self-interest, prior beliefs, and social discussion on changes in attitudes and behavior.Results suggest that the complexity of taxes and difficulty in knowing objective impacts weakens the role of self-interest in attitudinal changes, thereby strengthening the role of prior beliefs and discussion. Evaluations of tax laws are most responsive to more politically-oriented influences.  相似文献   
5.
6.
Using data from 8 random assignment studies and employing meta‐analytic techniques, this article provides systematic evidence that welfare and work policies targeted at low‐income parents have small adverse effects on some school outcomes among adolescents ages 12 to 18 years at follow‐up. These adverse effects were observed mostly for school performance outcomes and occurred in programs that required mothers to work or participate in employment‐related activities and those that encouraged mothers to work voluntarily. The most pronounced negative effects on school outcomes occurred for the group of adolescents who had a younger sibling, possibly because of the increased home and sibling care responsibilities they assumed as their mothers increased their employment.  相似文献   
7.
Mothers' time‐use patterns were compared in families in which infants spent more than 30 hours per week in child care (In‐Care group; n= 143) versus 0 hours per week (At‐Home group; n= 183) from birth to 6 months of age. In‐Care group mothers spent about 12 fewer hours per week interacting with their infants, for about 32% less time; fathers of these infants were more involved in caregiving. The groups did not differ in the quality of mother‐infant interaction. In the In‐Care group, quantity of interaction was related to greater separation anxiety and concerns about effects of maternal employment. Time‐use data were not related to child outcomes at 15 months of age. Results suggest that the effect of extensive time spent apart on the quantity and quality of mother‐infant interaction may be smaller than anticipated.  相似文献   
8.
What do novice word learners know about the sound of words? Word‐learning tasks suggest that young infants (14 months old) confuse similar‐sounding words, whereas mispronunciation detection tasks suggest that slightly older infants (18–24 months old) correctly distinguish similar words. Here we explore whether the difficulty at 14 months stems from infants' novice status as word learners or whether it is inherent in the task demands of learning new words. Results from 3 experiments support a developmental explanation. In Experiment 1, infants of 20 months learned to pair 2 phonetically similar words to 2 different objects under precisely the same conditions that infants of 14 months (Experiment 2) failed. In Experiment 3, infants of 17 months showed intermediate, but still successful, performance in the task. Vocabulary size predicted word‐learning performance, but only in the younger, less experienced word learners. The implications of these results for theories of word learning and lexical representation are discussed.  相似文献   
9.
10.
Awkward Customers? Parents and Provision for Special Educational Needs   总被引:1,自引:1,他引:0  
This article selectively reports on a small-scale qualitative exploration of the experiences of families who had undergone recent conflict with special educational needs (SEN) professionals. The data were collected over the spring and summer terms of 2001 from 10 families in two local education authorities (LEAs) in the English midlands. The research aimed to examine the parents' perspectives on points of conflict or dissatisfaction between themselves and education professionals. It was concerned with the parents' points of view regarding their pursuit of desired outcomes for their children and the factors that helped or hindered their endeavours. The project found that the parents' negotiation of the SEN system was held by them to be exceptionally difficult and stressful compared to other troubling issues in their lives. The research suggests that dissatisfactions with SEN provision have important implications for the management of LEA Parent partnership Schemes (PPS) in ameliorating the differences between parental aspirations and governmental ambition.  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