全文获取类型
收费全文 | 25784篇 |
免费 | 1444篇 |
专业分类
各国政治 | 962篇 |
工人农民 | 1214篇 |
世界政治 | 1673篇 |
外交国际关系 | 812篇 |
法律 | 17311篇 |
中国共产党 | 36篇 |
中国政治 | 215篇 |
政治理论 | 4786篇 |
综合类 | 219篇 |
出版年
2021年 | 131篇 |
2020年 | 530篇 |
2019年 | 545篇 |
2018年 | 734篇 |
2017年 | 782篇 |
2016年 | 880篇 |
2015年 | 681篇 |
2014年 | 715篇 |
2013年 | 2526篇 |
2012年 | 676篇 |
2011年 | 734篇 |
2010年 | 696篇 |
2009年 | 779篇 |
2008年 | 787篇 |
2007年 | 798篇 |
2006年 | 809篇 |
2005年 | 682篇 |
2004年 | 686篇 |
2003年 | 568篇 |
2002年 | 611篇 |
2001年 | 927篇 |
2000年 | 846篇 |
1999年 | 668篇 |
1998年 | 371篇 |
1997年 | 277篇 |
1996年 | 315篇 |
1995年 | 289篇 |
1994年 | 281篇 |
1993年 | 288篇 |
1992年 | 463篇 |
1991年 | 492篇 |
1990年 | 463篇 |
1989年 | 434篇 |
1988年 | 482篇 |
1987年 | 431篇 |
1986年 | 503篇 |
1985年 | 470篇 |
1984年 | 373篇 |
1983年 | 359篇 |
1982年 | 263篇 |
1981年 | 259篇 |
1980年 | 234篇 |
1979年 | 306篇 |
1978年 | 196篇 |
1977年 | 160篇 |
1976年 | 133篇 |
1975年 | 150篇 |
1974年 | 180篇 |
1973年 | 151篇 |
1972年 | 118篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
Phillip L. Hammack Elisabeth Morgan Thompson Andrew Pilecki 《Journal of youth and adolescence》2009,38(7):867-883
Youth with same-sex desire undergo a process of narrative engagement as they construct configurations of identity that provide
meaning and coherence with available sexual taxonomies. This article presents a theoretical analysis and four case studies
centering on the relationship among context, desire, and identity for youth with same-sex desire. Through an interpretive,
holistic analysis of the personal narratives of youth, we examine the integration of same-sex desire, behavior, and identity
in the general life story and the selective appropriation of elements of “master narratives” of sexual identity development.
Narratives were characterized by challenges to integrate desire, behavior, and identity into a configuration that conformed
to the received sexual taxonomy. Implications for theory and further research on sexual identity development are discussed. 相似文献
962.
The present study provides a comparative analysis of sexual-minority and heterosexual emerging adult women’s experiences seeking support for sexual issues from parents and friends. Participants included 229 college women (88 sexual-minority women; 141 heterosexual women), ranging from 18 to 25 years of age, who provided written responses to an inquiry about a time they went to friends and parents for support for a issue related to their sexuality. Responses indicated that the majority of participants had sought support from either a parent or a friend and that mothers and female friends were more likely involved than fathers or male friends, respectively. Sexual issues that participants reported discussing with parents and friends were inductively grouped into five categories: dating and romantic relationships, sexual behavior, sexual health, identity negotiation, and discrimination and violence. Issues that were discussed differed based on sexual orientation identity and the source of support (parent or friend); they did not differ by age. Participants generally perceived parents and friends’ responses as helpful, though sexual-minority participants perceived both parents and friends’ responses as less helpful than did heterosexual participants. Overall, results suggest both similarities and differences between sexual-minority and heterosexual young women’s experiences seeking support for sexual issues from parents and friends. 相似文献
963.
Sycarah Fisher Jennifer L. Reynolds Wei-Wen Hsu Jessica Barnes Kenneth Tyler 《Journal of youth and adolescence》2014,43(10):1688-1699
Although multiracial individuals are the fastest growing population in the United States, research on the identity development of multiracial adolescents remains scant. This study explores the relationship between ethnic identity, its components (affirmation, exploration), and mental health outcomes (anxiety, depressive symptoms) within the contexts of schools for multiracial adolescents. The participants were multiracial and monoracial minority and majority high school students (n = 4,766; 54.6 % female). Among the participants, 88.1 % were Caucasian, 7.4 % were African American, and 4.5 % were multiracial. The research questions examined the relationship between ethnic identity exploration and affirmation on mental health outcomes and explored the role school context plays in this relationship. The findings suggested that multiracial youth experience more exploration and less affirmation than African Americans, but more than Caucasians. In addition, multiracial youth were found to have higher levels of mental health issues than their monoracial minority and majority peers. Specifically, multiracial youth had higher levels of depressive symptoms than their African American and Caucasian counterparts. Multiracial and Caucasian youth had similar levels of anxiety but these levels were significantly higher than African Americans. School diversity did not influence mental health outcomes for multiracial youth. These findings provide insight into the experiences of multiracial youth and underscore the importance of further investigating factors that contribute to their mental health outcomes. 相似文献
964.
965.
966.
Past research indicates that anticipating adverse outcomes, such as early death (fatalism), is associated positively with adolescents’ likelihood of engaging in risky behaviors. Health researchers and criminologists have argued that fatalism influences present risk taking in part by informing individuals’ motivation for delaying gratification for the promise of future benefits. While past findings highlight the association between the anticipation of early death and a number of developmental outcomes, no known research has assessed the impact of location in a context characterized by high perceptions of fatality. Using data from Add Health and a sample of 9,584 adolescents (51 % female and 71 % white) nested in 113 schools, our study builds upon prior research by examining the association between friends’, school mates’, and individual perceptions of early fatality and adolescent risk behaviors. We test whether friends’ anticipation of being killed prior to age 21 or location in a school where a high proportion of the student body subscribes to attitudes of high fatality, is associated with risky behaviors. Results indicate that friends’ fatalism is positively associated with engaging in violent delinquency, non-violent delinquency, and drug use after controlling for individual covariates and prior individual risk-taking. Although friends’ delinquency accounts for much of the effect of friends’ fatalism on violence, none of the potential intervening variables fully explain the effect of friends’ fatalism on youth involvement in non-violent delinquency and drug use. Our results underscore the importance of friendship contextual effects in shaping adolescent risk-taking behavior and the very serious consequences perceptions of fatality have for adolescents’ involvement in delinquency and drug use. 相似文献
967.
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
968.
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
969.
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
970.
Christine M. Wienke Totura Marc S. Karver Ellis L. Gesten 《Journal of youth and adolescence》2014,43(1):40-52
Peer victimization is a well-known national and international problem, contributing to a range of emotional, social, and behavioral consequences. Using structural equation modeling, the authors tested a theoretical model suggesting that psychological distress and student engagement mediate the association between the experience of victimization and concurrent academic achievement. Participants were 469 (46.4 % male, 53.6 % female) 6th to 8th grade students, from randomly selected classrooms in 11 middle schools in a southeastern school district. Structural equation models of the hypothesized effects demonstrated adequate fit to the data, with both symptoms of psychological distress and engagement mediating the relationship between victimization and academic achievement. In general, the results suggest that victimization predicts diminished academic achievement by way of psychological distress and poorer engagement in classroom and academic tasks. However, the direct relationship between victimization and measures of achievement lacked significance across many correlational and path analyses conducted. These findings have implications for researchers and practitioners in understanding how psychological distress and student engagement are associated with the academic performance of students who experience peer victimization. 相似文献