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   1640篇
  免费   96篇
管理学   90篇
民族学   16篇
人口学   199篇
丛书文集   10篇
理论方法论   230篇
综合类   12篇
社会学   1129篇
统计学   50篇
  2024年   1篇
  2023年   20篇
  2022年   17篇
  2021年   10篇
  2020年   49篇
  2019年   81篇
  2018年   87篇
  2017年   118篇
  2016年   82篇
  2015年   61篇
  2014年   71篇
  2013年   290篇
  2012年   84篇
  2011年   86篇
  2010年   58篇
  2009年   54篇
  2008年   65篇
  2007年   80篇
  2006年   72篇
  2005年   44篇
  2004年   62篇
  2003年   39篇
  2002年   49篇
  2001年   20篇
  2000年   18篇
  1999年   11篇
  1998年   12篇
  1997年   10篇
  1996年   7篇
  1995年   7篇
  1994年   3篇
  1993年   2篇
  1992年   4篇
  1991年   5篇
  1990年   6篇
  1989年   4篇
  1988年   5篇
  1987年   7篇
  1986年   6篇
  1985年   5篇
  1984年   8篇
  1983年   5篇
  1981年   3篇
  1980年   2篇
  1978年   1篇
  1977年   1篇
  1975年   1篇
  1971年   2篇
  1967年   1篇
排序方式: 共有1736条查询结果,搜索用时 15 毫秒
61.
Maternal education differences in children's academic skills have been strongly linked to parental investment behaviors. This study extended this line of research to investigate whether these same maternal education patterns in parenting are observed among a set of parenting behaviors that are linked to young children's health. Drawing on data from the Early Childhood Longitudinal Study, Birth Cohort (n = 5,000) and longitudinal models incorporating random effects, the authors found that higher levels of maternal education were associated with more advantageous health investment behaviors at each phase of early development (9 months, 2 years, 4 years, 5 years). Moreover, these disparities were typically largest at the developmental stage when it was potentially most sensitive for children's long‐term health and development. These findings provide further evidence of a developmental gradient associated with mothers' education and new insight into the salience of mothers' education for the short‐ and long‐term health and well‐being of their children.  相似文献   
62.
The authors examine factors associated with the advancement or dissolution of newly formed sexual relationships. Data from the 2006–2010 National Survey of Family Growth (NSFG) was used to examine women and men aged 18–39 (n = 2,774) whose most recent sexual relationship began within the 12 months before their interview. Results indicate that newly formed sexual relationships are often transitory. By 12 months, only 23% of respondents remained in nonresidential sexual relationships, another 27% were cohabiting with that partner, and half had ended their relationships. Sexual relationships formed before age 25 are significantly more likely to break up than to transition into cohabitation. Indicators of social class disadvantage, such as living with a stepparent, expedited cohabitation, whereas measures of advantage, such as having a college‐educated mother, deterred transitions into shared living. Racial differences also emerge: Blacks were less likely than Whites to transition rapidly into shared living.  相似文献   
63.
This article aims to broaden the ways we conceptualize citizenship and implement citizenship education in social studies. To do so, the authors explore media texts as a curricular and pedagogical site for teaching lessons about citizenship. Specifically, the authors investigate how media drafts the boundaries of citizenship for Latin@ youth, and influences how young people come to understand who is and who is not perceived as a citizen entitled to rights and freedoms. Media texts, like formal social studies curricula, are powerful and enduring educators that shape how students know the world and imagine their place in it. Therefore, this article addresses how social studies teachers can integrate media texts into the classroom to explore representations of Latin@s and the impact that media has on our citizenship identities and experiences.  相似文献   
64.
65.
Across the United States, many afterschool and out-of-school time programs are making constructive and lasting impacts on the lives of homeless children and youth by providing expanded learning opportunities and positive youth development outcomes in a safe space. In this brief, we profile two youth-serving organizations and the After School Division of the California Department of Education to illustrate how afterschool programs can be part of the solution for homeless children and youth. Staff from these organizations shared their practices, successes, challenges, and lessons learned. Most importantly, they shared a message of hope and a vision for what is possible in the midst of trauma, uncertainty, and displacement.  相似文献   
66.
Urbanization poses threats to earth’s biota, and retention of remnant native habitat in protected areas within expanding urban boundaries may help alleviate threats to wildlife. However, it is unclear for nearly all nonsynanthropic (i.e., not benefiting from an association with humans) species whether vital rates in urban habitats can sustain populations or if populations persist only through immigration from outside the urban boundary. We conducted a three-year study of spotted towhees (Aves: Pipilo maculatus) breeding in four undeveloped parks in Portland, OR, USA, to measure park-specific seasonal reproductive output (F) and annual adult survival (SA). We developed a stochastic model that combined F and SA with an estimate of first-year survival to measure population growth rate (λ) in all parks assumed to be closed to immigration. F differed among parks but SA did not. Relatively high F was possible because many pairs raised >1 brood/season. When combined with empirical estimates of survival through the 30-day period of post-fledging parental care (SD = 0.645), only 2 of 4 parks were self-sustaining (i.e., λ > 1.0). However, SD reflected substantial loss of fledglings to domestic cats (Felis catus). Assuming no loss to cats and either partial compensatory or additive mortality of fledglings substantially improved prospects of population persistence for declining (sink) populations. Moreover, allowing low levels of immigration to sinks reversed population declines in most parks even when vital rates were insufficient to maintain populations. Our results suggest that nonsynanthropic bird species can persist in urban landscapes, but also that offspring mortality in the post-fledging period may be a critical determinant of population viability.  相似文献   
67.
The methods used when samples of journal articles are treated as the basis for measuring levels of quantification in national sociologies are examined. The data come from every identified example in English. It is found that operational definitions of ‘quantitative’ vary, while ‘qualitative’ work is characterised simply by the absence of sophisticated quantification, which is sometimes taken to imply quantitative incompetence rather than methodological choice. The articles used as data on the state of a whole national sociology are usually drawn from elite general journals in which many sociologists have never published, and ignore the authors’ national backgrounds and publications elsewhere. It is concluded that there is a gap between concepts and operational definitions which it would be desirable to fill.  相似文献   
68.
This study examines how preadolescent African American students in Washington, D.C., used a linguistic practice called ‘joning,’ a style of verbal play similar to ritual insults, in peer interactions. Sociolinguists have focused on how children socialize each other into vernacular styles appropriate for peer group use but often assume that they disalign with social and linguistic norms for classroom behavior. Drawing from a nine‐month ethnographic study that the author conducted in an after‐school program, this article analyzes the structure and function of joning as a vernacular style of African American Vernacular English and its uses in constructing classroom identities. Joning often facilitated student learning, but it was perceived as a socially and physically risky linguistic practice because of its uses as conflict talk in the local community. Focusing on preadolescence as a key stage of language socialization, this article shows how minority students modify peer‐learned linguistic practices to pursue academic success on their own terms.  相似文献   
69.
The current study explored two possible comparison groups for the double Face‐to‐Face Still‐Face (FFSF) paradigm to evaluate their effects on infant behavior and different hypotheses about the nature of the Still‐Face (SF) effect, an effect not fully understood. Mothers and their 4‐month‐old infants were randomly assigned to one of three groups, a double FFSF group (GroupFFSF, n = 44), a control, semi‐structured play group (GroupStory, n = 46), or a control, unstructured play group (GroupPlay, n = 28). As hypothesized, GroupFFSF infants exhibited the classic SF response (decreased positive affect and gaze to mother; increased negative affect) and GroupPlay infants showed an increase in negative affect over episodes. Contrary to expectations, GroupStory infants displayed a similar, but less intense, pattern of behavior as GroupFFSF. Taken together, the findings indicate that multiple episodes of face‐to‐face play exceeded 4‐month‐olds' regulatory capacities and that infants are sensitive to shared communicative intentions and violations of social expectations, whether these violations are negative or positive in nature.  相似文献   
70.
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