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   23043篇
  免费   1343篇
各国政治   1009篇
工人农民   991篇
世界政治   1621篇
外交国际关系   751篇
法律   15399篇
中国共产党   2篇
中国政治   137篇
政治理论   4326篇
综合类   150篇
  2021年   115篇
  2020年   471篇
  2019年   524篇
  2018年   666篇
  2017年   673篇
  2016年   752篇
  2015年   586篇
  2014年   624篇
  2013年   2432篇
  2012年   598篇
  2011年   635篇
  2010年   639篇
  2009年   677篇
  2008年   644篇
  2007年   637篇
  2006年   665篇
  2005年   560篇
  2004年   552篇
  2003年   484篇
  2002年   537篇
  2001年   839篇
  2000年   737篇
  1999年   602篇
  1998年   328篇
  1997年   253篇
  1996年   253篇
  1995年   258篇
  1994年   239篇
  1993年   253篇
  1992年   400篇
  1991年   437篇
  1990年   407篇
  1989年   401篇
  1988年   414篇
  1987年   397篇
  1986年   431篇
  1985年   447篇
  1984年   366篇
  1983年   348篇
  1982年   268篇
  1981年   237篇
  1980年   225篇
  1979年   301篇
  1978年   183篇
  1977年   143篇
  1976年   133篇
  1975年   153篇
  1974年   190篇
  1973年   143篇
  1972年   128篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
931.
Journal of Youth and Adolescence - In the original publication, the legends for Figs 4 and 5 were incorrect, such that each regression line was mislabeled with the incorrect country. Below are the...  相似文献   
932.

Drawing from Race-Based Traumatic Stress theory, the present study examined whether traumatic stress and depressive symptoms differentially help explain the relation between racial/ethnic discrimination and suicidal ideation across gender and racial/ethnic groups. A racially/ethnically diverse group of emerging adults (N?=?1344; Mage?=?19.88, SD?=?2.25; 72% female; 46% Hispanic) completed a battery of self-report measures. A cross-sectional design was employed with a series of hierarchical linear regression models and bootstrapping procedures to examine the direct and indirect relation between racial/ethnic discrimination and suicidal ideation through traumatic stress and depressive symptoms across gender and race/ethnicity. The findings suggest an indirect relation through depressive symptoms, but not traumatic stress, and a serial indirect relation through traumatic stress to depressive symptoms in young women and young men, the latter of which was stronger in young women. The indirect relations did not vary by racial/ethnic group. Cumulative experiences of racial/ethnic discrimination may impact suicide-related risk via increases in psychiatric symptomology (i.e., traumatic stress and depressive symptoms), particularly in young women. Racial/ethnic discrimination experiences should be accounted for as a potential source of psychological distress in the assessment, diagnosis, and treatment of suicidal thoughts and behavior, especially among young women endorsing traumatic stress and depressive symptoms. Further research is warranted to better understand the gender difference in the relation between racial/ethnic discrimination and suicide-related risk.

  相似文献   
933.
Journal of Youth and Adolescence - Dual identity (e.g., strong ethnic and national identity) is a psychological resource for minority groups, but how it develops during adolescence is less clear....  相似文献   
934.
Following 9/11, Al-Qaeda-orchestrated plots were considered the greatest threat to Western security and sparked the coalition’s war on terror. Close to a decade later, the post-9/11 threat landscape had shifted significantly, leading then CIA-director Leon Panetta to describe “the lone-wolf strategy” as the main threat to the United States. Subsequent lone-actor attacks across the West, including the cities of London, Nice, Berlin, Stockholm, Ottawa and Charleston, further entrenched perspectives of a transformed security landscape in the “after, after-9/11” world. The unique features of lone-actor terrorism, including the challenges of interdiction and potential of copycat attacks, mean that the media is likely to play a particularly important role in shaping the reactions of the public, affected communities and copycat attackers. This article presents findings from a content analysis of British and Danish newspaper reporting of lone-actor terrorism between January 2010 and February 2015. The study highlights that lone-actor terrorism is framed, with national variations, as a significant and increasing problem in both countries; that Islamist lone-actors are often represented as distinct from far-right lone-actors; and that some reporting, despite relatively limited amplification of specific terrorist messages, potentially aids lone-actors by detailing state vulnerabilities to attacks.  相似文献   
935.
As transgender and gender-expansive (TGE) youth and young adults (YYA) navigate challenging environments, they often seek spaces for safety and acceptance. This study explores ways in which a group of TGE YYA who were engaged with a community-based service organization make sense of their experiences, challenges, and successes in ways that illuminate the factors and processes associated with resilience. Secondary data analysis was conducted on qualitative responses from 85 TGE YYA ages 13–24. The themes that emerged provide insight into the ways community-based programs and providers can understand and support the resilience of TGE YYA.  相似文献   
936.
937.
The territorialisation of politics is a crucial transformation in state–society relations that has implications on how contemporary politics works. Defined here as the dispute for the physical control of space, be it a municipality, province or portion of land, within one or more politically constituted entities. It does not mean the emergence of a new regime type, but the process through which the territory re-emerges as a new cleavage after neoliberal reforms and authoritarian regimes have weakened/dissolved neo-corporatist arrangements for the resolution of socio-political conflicts in society. It is a cleavage because central political divisions are produced as a result of the physical encounter of or distance between political actors and of the dispute for the control of a territory for sociopolitical goals and causes that are not always territorially defined. Departing from this definition, I also raise potential explanatory hypotheses for the transformations that favoured this transformation in Argentina.  相似文献   
938.
Why do activist groups form alliances and why do some alliances later fall apart? This article asks these questions in the context of a popular mobilisation against resource extraction in Bangladesh. It focuses on the dynamics of a strategic alliance between a locally organised community mobilisation against a British mining company and an urban radical activist group, known for its anti-capitalist activism, to explore the subsequent collapse of the alliance and the demobilisation of one group. Based on the qualitative analysis of in-depth interviews with activists and organisational documents, the article probes the underlying causes of rupture. Although several individual and organisational factors are identified, it is argued that Bangladesh’s confrontational political culture and its authoritarian party system played a critical role, with local activists vulnerable to co-optation or being silenced by powerful political actors. The article contributes to social movement scholarship by emphasising that specific political cultures can undermine efforts to build strategic alliances between diverse social movement organisations.  相似文献   
939.
The main aim of this study was to investigate the causal nature of the relationship between adolescents’ risky sexual behavior on the internet and their perceptions of this behavior. Engagement in the following online behaviors was assessed: searching online for someone to talk about sex, searching online for someone to have sex, sending intimate photos or videos to someone online, and sending one’s telephone number and address to someone exclusively known online. The relationship between these behaviors and adolescents’ perceptions of peer involvement, personal invulnerability, and risks and benefits was investigated. A two-wave longitudinal study among a representative sample of 1,445 Dutch adolescents aged 12–17 was conducted (49% females). Autoregressive cross-lagged structural equation models revealed that perceived peer involvement, perceived vulnerability, and perceived risks were all significant predictors of risky sexual online behavior 6 months later. No reverse causal paths were found. When the relationships between perceptions and risky sexual online behavior were modeled simultaneously, only perceived peer involvement was a determinant of risky sexual online behavior. Findings highlight the importance of addressing peer involvement in future interventions to reduce adolescents’ risky sexual online behavior.  相似文献   
940.
Extracurricular activities provide a key context for youth development, and participation has been linked with positive developmental outcomes. Using data from the 4-H Study of Positive Youth Development (PYD), this study explored how the intentional self regulation ability of youth interacted with participation in extracurricular activities to affect PYD among adolescents living in neighborhoods with relatively low ecological assets. In total, 545 youth were included in the study (50.3% female). Most of the youth were European American (41%) or Latino (37%; African American, 10%; Asian American, 7%; Native American, 4%; and other, 1%). In general, youth with the greatest capacity to self regulate benefitted the most, as compared to their peers with less capacity to self regulate, from involvement in extracurricular activities. Consistent with a developmental systems perspective, and specifically with bioecological theory, the findings from this study confirmed that, within lower asset settings, children with the most positive person-level factors (intentional self regulation) benefit the most from proximal processes such as extracurricular activity involvement.  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