全文获取类型
收费全文 | 2561篇 |
免费 | 39篇 |
专业分类
各国政治 | 26篇 |
工人农民 | 29篇 |
世界政治 | 411篇 |
外交国际关系 | 131篇 |
法律 | 1575篇 |
中国共产党 | 104篇 |
中国政治 | 122篇 |
政治理论 | 179篇 |
综合类 | 23篇 |
出版年
2019年 | 3篇 |
2018年 | 4篇 |
2016年 | 5篇 |
2015年 | 4篇 |
2014年 | 23篇 |
2013年 | 14篇 |
2012年 | 186篇 |
2011年 | 170篇 |
2010年 | 65篇 |
2009年 | 44篇 |
2008年 | 182篇 |
2007年 | 202篇 |
2006年 | 212篇 |
2005年 | 230篇 |
2004年 | 184篇 |
2003年 | 174篇 |
2002年 | 167篇 |
2001年 | 140篇 |
2000年 | 151篇 |
1999年 | 82篇 |
1998年 | 32篇 |
1997年 | 30篇 |
1996年 | 28篇 |
1995年 | 24篇 |
1994年 | 14篇 |
1993年 | 14篇 |
1992年 | 13篇 |
1991年 | 12篇 |
1990年 | 8篇 |
1989年 | 3篇 |
1988年 | 20篇 |
1987年 | 7篇 |
1986年 | 9篇 |
1985年 | 8篇 |
1984年 | 15篇 |
1983年 | 15篇 |
1982年 | 13篇 |
1981年 | 7篇 |
1980年 | 17篇 |
1979年 | 10篇 |
1978年 | 6篇 |
1977年 | 6篇 |
1976年 | 3篇 |
1974年 | 4篇 |
1963年 | 4篇 |
1962年 | 5篇 |
1959年 | 4篇 |
1958年 | 3篇 |
1957年 | 2篇 |
1956年 | 3篇 |
排序方式: 共有2600条查询结果,搜索用时 15 毫秒
61.
The present study examined the longitudinal links between perceptions of family connectedness and body satisfaction in 1,774
(52% female) adolescents. Participants (10–15 years of age at Time 1) completed self-report measures at three measurement
occasions separated by 1 year each. Mean group difference results showed that both body satisfaction levels and perceived
levels of family connectedness decreased over 2 years for the whole sample. As expected, girls were generally less satisfied
with their bodies than boys, particularly in the older cohort. Structural equation modelling was used to assess stability
coefficients and cross-lagged effects, and longitudinal bidirectional effects between perceptions of family connectedness
and body satisfaction were found for girls, but not for boys. This result suggests that adolescent girls’ body satisfaction
is both affected by and a predictor of perceived family connectedness. 相似文献
62.
Previous studies have indicated homophily in depressive symptoms among adolescent friends, resulting from both peer selection
and socialization processes. However, developmental differences and the role of school transitions in these processes have
not been elucidated. A sample of 367 (51% female) adolescents was followed from 6th to 11th grade to investigate prospective
relationships between adolescents’ and their friends’ depressive symptoms in middle school and in high school. Results revealed
that students selected friends with similar levels of depressive symptoms after each school transition. Additionally, friends
appeared to socialize adolescents to become more similar in depressive affect in late middle school years. These findings
suggest normative selection effects after school transitions, followed by socialization effects in middle school, but not
high school. 相似文献
63.
This study examined the mediated and moderated effects of a universal family-focused preventive intervention, delivered during young adolescence, on internalizing symptoms assessed in young adulthood. Sixth grade students (N=446; 52% female; 98% White) and their families from 22 rural Midwestern school districts were randomly assigned to the experimental conditions in 1993. Self-report questionnaires were administered at seven time points (pre-test to young adulthood-age 21) to those receiving the Iowa Strengthening Families Program (ISFP) and to the control group. Results showed that growth factors of adolescent internalizing symptoms (grades 6-12) were predicted by ISFP condition and risk status (defined as early substance initiation). Moderation of the condition effect by risk status was found, with higher-risk adolescents benefitting more from the ISFP. Results also supported the hypothesis that the ISFP's effect on internalizing symptoms in young adulthood was mediated through growth factors of adolescents' internalizing symptoms; risk moderation, however, was only marginally significant in young adulthood. The relative reduction rate on clinical or subclinical levels of young adult internalizing symptoms was 28%, indicating that for every 100 young adults displaying clinical or subclinical levels of internalizing symptoms from school districts not offering an intervention, there could be as few as 72 displaying those levels of symptoms in school districts that offered middle school prevention programming. These findings highlight how the positive effects of family-focused universal interventions can extend to non-targeted outcomes and the related potential public-health impact of scaling up these interventions. 相似文献
64.
Studies on homophobia among adolescents routinely depart from the assumption that this attitude will be continued into adulthood. However, little research has been conducted on how the transition toward adulthood actually affects homophobia. While earlier studies relied on cross-sectional observations, the present analysis makes use of the Belgian Political Panel Survey (2008-2011), tracking 2,815 respondents (52?% female, 48?% male) between the ages of 18 and 21. A conditional change model shows that while men had substantially higher levels of homophobia than women to begin with, this difference grew even larger throughout the observation period. The discrepancy between Muslim respondents and those with other religions became larger as well. Overall, the gender and religious differences already present in adolescence had become further polarized at the end of the observation period. Friendship relations with persons with a different sexual orientation, on the other hand, significantly reduced prejudice, especially among men, while the results also show that changes in the level of homophobia are related strongly to conservative views on gender roles. We conclude that groups that already display high levels of homophobia during adolescence are likely to grow even more extreme in their views in the transition to adulthood. 相似文献
65.
According to Gottfredson and Hirschi??s self-control theory, child and adolescent variation in self-control results primarily from variations in parental socialization. Although much research reveals a link between parenting and self-control, many recent studies indicate that the etiology of self-control is more complex than what has been theoretically specified. In further considering this issue, the current study first presents a theoretical model that emphasizes the role that peers may play in the development of self-control, even when accounting for the influence of parents. Next, we empirically assess the extent to which peer behavior influences self-control during childhood. The data come from a sample of U.S. families (n?=?776); 48% of the subjects are male, their age was 9?years, and non-Hispanic whites represented 84% of the sample. The analysis revealed that peer behavior is significantly associated with subsequent self-control, even after accounting for differences in parental socialization, prior self-control, and other potential sources of spuriousness. The implications of the findings for theory and future research are discussed. 相似文献
66.
67.
探讨俄罗斯联邦公民在中华人民共和国境内的法律地位问题之一个方面,即在中国境内居留的法律依据对于建立和发展中俄两国的睦邻友好合作伙伴关系越来越具有现实意义。根据中华人民共和国法律的规定,我们可以把俄罗斯联邦公民在中国境内居留的法律依据划分为取得入境签证、取得外国人居留证和国际直接过境三种。 相似文献
68.
赫安泽 《共产党员(沈阳)》2011,(3):39-39
铁岭市坚持16年开展“廉洁勤政公仆”、“廉内助”的“双廉”评选活动,如今,经过各级党委、政府和人民群众精心浇灌的584朵“双廉”鲜花,已在全市绽放得更加绚丽多彩。 相似文献
69.
Asylum-seekers and national histories of detention 总被引:1,自引:0,他引:1
The Australian system of mandatory detention of asylum–seekers has become increasingly controversial. Insofar as commentary on detention has been framed historically, critics have pointed to Australia's race–based exclusionary laws and policies over the twentieth century. In this article, we suggest that exclusion and detention are not equivalent practices, even if they are often related. Here we present an alternative genealogy of mandatory detention and protests against it. Quarantine–detention and the internment of "enemy aliens" in wartime are historic precedents for the current detention of asylum–seekers. Importantly, in both carceral practices, non–criminal and often non–citizen populations were held in custody en masse and without trial. Quarantine, internment and incarceration of asylum–seekers are substantively connected over the twentieth century, as questions of territory, security and citizenship have been played out in Australia's histories of detention. 相似文献
70.