全文获取类型
收费全文 | 23301篇 |
免费 | 1340篇 |
专业分类
各国政治 | 1093篇 |
工人农民 | 1056篇 |
世界政治 | 1522篇 |
外交国际关系 | 786篇 |
法律 | 15652篇 |
中国共产党 | 2篇 |
中国政治 | 143篇 |
政治理论 | 4252篇 |
综合类 | 135篇 |
出版年
2020年 | 476篇 |
2019年 | 510篇 |
2018年 | 655篇 |
2017年 | 699篇 |
2016年 | 776篇 |
2015年 | 578篇 |
2014年 | 644篇 |
2013年 | 2479篇 |
2012年 | 590篇 |
2011年 | 625篇 |
2010年 | 642篇 |
2009年 | 665篇 |
2008年 | 651篇 |
2007年 | 659篇 |
2006年 | 673篇 |
2005年 | 563篇 |
2004年 | 549篇 |
2003年 | 502篇 |
2002年 | 522篇 |
2001年 | 879篇 |
2000年 | 768篇 |
1999年 | 642篇 |
1998年 | 315篇 |
1997年 | 248篇 |
1996年 | 261篇 |
1995年 | 250篇 |
1994年 | 241篇 |
1993年 | 235篇 |
1992年 | 403篇 |
1991年 | 435篇 |
1990年 | 423篇 |
1989年 | 396篇 |
1988年 | 423篇 |
1987年 | 403篇 |
1986年 | 445篇 |
1985年 | 425篇 |
1984年 | 352篇 |
1983年 | 330篇 |
1982年 | 243篇 |
1981年 | 236篇 |
1980年 | 199篇 |
1979年 | 321篇 |
1978年 | 191篇 |
1977年 | 159篇 |
1976年 | 132篇 |
1975年 | 172篇 |
1974年 | 200篇 |
1973年 | 157篇 |
1972年 | 131篇 |
1971年 | 118篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
861.
862.
863.
864.
865.
866.
867.
Rachel M. Petrocelli 《Canadian journal of African studies》2016,50(2):149-168
From the late nineteenth century through the mid-twentieth century, Cape Verdean immigrants to Dakar, colonial capital of French West Africa, became a small but important community in terms of significance in both the urban economy and the colonial framework of race and identity. They occupied important labor niches valuable to the colonizer such as painting and domestic work and attached those fields to a unique identity to which only they belonged. Able to capitalize on the ambiguity inherent to colonial race and identity policies, Cape Verdeans bridged categories common to state policies – particularly “foreign” and “native” – in ways not adequately captured by the concept of intermediaries often employed in examinations of immigrant populations to West Africa. Their insertion in Dakar reveals the permeability of such colonial concepts as well as the opportunities immigrants made in town. 相似文献
868.
Kristina L. McDonald Tina Malti Melanie Killen Kenneth H. Rubin 《Journal of youth and adolescence》2014,43(2):233-244
Peer relationships, particularly friendships, have been theorized to contribute to how children and adolescents think about social and moral issues. The current study examined how young adolescent best friends (191 dyads; 53.4 % female) reason together about multifaceted social dilemmas and how their reasoning is related to friendship quality. Mutually-recognized friendship dyads were videotaped discussing dilemmas entailing moral, social-conventional and prudential/pragmatic issues. Both dyad members completed a self-report measure of friendship quality. Dyadic data analyses guided by the Actor-Partner Interdependence Model indicated that adolescent and friend reports of friendship qualities were related to the forms of reasoning used during discussion. Friends who both reported that they could resolve conflicts in a constructive way were more likely to use moral reasoning than friends who reported that their conflict resolution was poor or disagreed on the quality of their conflict resolution. The findings provide evidence for the important role that friendship interaction may play in adolescents’ social and moral development. 相似文献
869.
Research on coparenting documents that mothers’ and fathers’ coordination and mutual support in their parenting roles is linked to their offspring’s adjustment in childhood, but we know much less about the coparenting of adolescents. Taking a family systems perspective, this study assessed two dimensions of coparenting, parents’ shared decision-making and joint involvement in activities with their adolescents, and examined bidirectional associations between these coparenting dimensions and boys’ and girls’ risky behaviors and depressive symptoms across four time points (6 years) in adolescence. Participants were 201 mothers, fathers, and adolescents (M = 11.83, SD = .55 years of age at Time 1; 51 % female). Parents of sons shared more decisions, on average, than parents of daughters. On average, shared decision-making followed an inverted U shaped pattern of change, and parents’ joint involvement in their adolescents’ activities declined. Cross-lagged findings revealed that risky behavior predicted less shared decision-making, and shared decision-making protected against increased risky behavior for boys. For girls and boys, parents’ joint involvement predicted fewer risky behaviors, and lower levels of risky behavior predicted higher levels of joint involvement. In contrast, boys’ and girls’ depressive symptoms predicted less joint involvement. The discussion centers on the nature and correlates of coparenting during adolescence, including the role of child effects, and directions for future research on coparenting during this developmental period. 相似文献
870.
Janine M. Zweig Pamela Lachman Jennifer Yahner Meredith Dank 《Journal of youth and adolescence》2014,43(8):1306-1321
Recent advancements in technology (e.g., social networking, texting) have created new ways for dating youth to relate to one another, including in abusive ways via “cyber dating abuse.” Cyber dating abuse is a form of teen dating violence that overlaps with other types of abuse (e.g., psychological) but also has several unique characteristics. Given the phenomenon’s limited presence in dating violence literature, we focus on identifying how experiencing cyber dating abuse relates to youths’ individual behaviors and experiences (e.g., substance use, sexual activity), psychosocial adjustment, school connection, family relationships, and partner relationships. A total of 3,745 youth (52 % female, 74 % White) in three northeastern states participated in the survey and reported currently being in a dating relationship or having been in one during the prior year. We found that experiences of cyber dating abuse were most significantly correlated with being female, committing a greater variety of delinquent behaviors, having had sexual activity in one’s lifetime, having higher levels of depressive symptoms, and having higher levels of anger/hostility. Further, cyber dating abuse appeared somewhat more strongly related to depressive symptoms and delinquency than did other forms of teen dating violence and abuse. 相似文献