全文获取类型
收费全文 | 8179篇 |
免费 | 0篇 |
专业分类
各国政治 | 199篇 |
工人农民 | 1069篇 |
世界政治 | 167篇 |
外交国际关系 | 278篇 |
法律 | 4630篇 |
政治理论 | 1836篇 |
出版年
2021年 | 3篇 |
2018年 | 1272篇 |
2017年 | 1196篇 |
2016年 | 1009篇 |
2015年 | 56篇 |
2014年 | 12篇 |
2013年 | 10篇 |
2012年 | 182篇 |
2011年 | 911篇 |
2010年 | 1011篇 |
2009年 | 577篇 |
2008年 | 729篇 |
2007年 | 685篇 |
2006年 | 1篇 |
2005年 | 58篇 |
2004年 | 165篇 |
2003年 | 137篇 |
2002年 | 26篇 |
2001年 | 1篇 |
2000年 | 4篇 |
1998年 | 9篇 |
1997年 | 11篇 |
1996年 | 19篇 |
1995年 | 29篇 |
1994年 | 22篇 |
1993年 | 1篇 |
1984年 | 9篇 |
1983年 | 8篇 |
1982年 | 5篇 |
1979年 | 5篇 |
1978年 | 7篇 |
1977年 | 9篇 |
排序方式: 共有8179条查询结果,搜索用时 15 毫秒
271.
Organized youth programs provide a context where adolescents experience strong emotions and may develop new ways of thinking about and dealing with emotions. The current study examined youth’s reports of positive and negative emotions arising during the course of their work in different types of project-based programs; learning about emotions from different sources (e.g., from observing peers, interacting with adult staff, or engaging in self-reflection); and longitudinal associations between emotional experiences and learning. Quantitative data were collected at two time points from 319 youth (57% female; M age?=?15.8 years; 33% Latino, 29% Black, 32% White, 6% other) participating in 14 Midwestern programs focused on Leadership, Arts and Performance (Arts), and Science, Technology, Engineering, and Math (STEM). Overall, positive emotions occurred more frequently than negative emotions, but emotional experiences differed based on the focus of the program. There were few significant differences in emotional learning from various sources (self, peers, staff) across the three types of programs. Multiple regression models controlling for prior learning indicated that, consistent with theory, positive emotions predicted subsequent learning about emotions from all sources. In contrast, negative emotions predicted increased learning from peers but decreased learning from self, suggesting that experiencing negative (vs. positive) emotions may lead youth to attend to different sources of information. The study’s findings have implications for theory, research, and practice. 相似文献
272.
Kevin T. Wolff Celina Cuevas Jonathan Intravia Michael T. Baglivio Nathan Epps 《Journal of youth and adolescence》2018,47(11):2279-2300
Adverse childhood experiences (ACEs) have been identified as a key risk factor associated with a wide range of negative life outcomes, including juvenile delinquency. Much less work has explored whether certain combinations of ACEs, or typologies of trauma, exist, and whether or not these subgroups are differentially associated with certain youth-level and/or community-level characteristics. The current study uses latent class analysis to examine ACE typologies among a sample of over 92,000 juvenile offenders between the ages of 10 and 18 in the state of Florida (52% male, 37.3% White, 46.8% Black, 15.9% Hispanic). Multilevel multinomial logistic regression is used to assess the relationship between both individual- and community-level factors and class membership. The findings suggest that a total of five distinct ACE typologies exist among the sample of juvenile offenders, and age, race, and sex were significantly associated with class membership. Additionally, controlling for individual-level characteristics, community-level measures of immigrant concentration, residential instability, and two separate measures of concentrated disadvantage and affluence were significantly related to class membership. This study contributes to the understanding of adverse childhood experiences, and adds to existing knowledge regarding the relationship between contextual factors and childhood abuse, maltreatment, and trauma. The identification of ACE subgroups with distinct characteristics may help guide prevention strategies and tailor treatment provided by the juvenile justice system. 相似文献
273.
Brian D. Christens Kymberly Byrd N. Andrew Peterson David T. LardierJr. 《Journal of youth and adolescence》2018,47(8):1649-1662
Psychological empowerment encompasses several key aspects of youth civic and sociopolitical development. Most research has focused on psychological empowerment’s emotional component, which entails learned hopefulness about one’s own ability to participate in and lead community change efforts. Fewer studies have assessed critical awareness of how social power operates—psychological empowerment’s cognitive component. The confluence of these two components has been termed critical hopefulness. A complex relationship exists between these two components, and previous research has found relatively small proportions of participants reporting both high levels of critical awareness and simultaneously high levels of hopefulness about their ability to exert influence in the sociopolitical domain. The current study of urban high school students in the Northeastern U.S. (n?=?389; 53.5% female) investigates heterogeneity according to these two components of psychological empowerment. Latent class cluster analyses were conducted and seven distinct groups of participants emerged. Students identifying as Hispanic/Latinx were more likely to be classified into a profile group exhibiting critical hopefulness. Differences were observed between psychological empowerment profile groups on self-reported levels of psychological sense of community, civic engagement, and social justice orientation. Furthermore, a larger proportion of this overall sample was classified into groups that exhibited critical hopefulness than in a previous study of adults. These findings provide useful insights for efforts to engage young people in civic life and to promote sociopolitical development. 相似文献
274.
Atika Khurana Daniel Romer Laura M. Betancourt Hallam Hurt 《Journal of youth and adolescence》2018,47(9):1992-2005
Developmental imbalance models attribute the rise in risk-taking during adolescence to a universal imbalance between rising reward sensitivity and lagging cognitive control. This study tested predictions of an alternate Lifespan Wisdom Model that distinguishes between exploratory/adaptive (e.g., sensation seeking) and maladaptive (e.g., acting-without-thinking, delay discounting) risk-taking propensities and attributes the latter to a sub-set of youth with weak cognitive control. Latent trajectory modeling of six waves of data from 387 adolescents (52% females; spanning average ages of 11–18 years) revealed distinct sub-groups with heterogeneous trajectory patterns for acting-without-thinking and delay-discounting. Only those trajectory groups with weak cognitive control, characterized as “high-increasing” acting-without thinking and “high-stable” delay discounting were predictive of a maladaptive risk-taking outcome, namely substance use disorder. Sensation seeking demonstrated a universal peak, but high levels of sensation seeking were not associated with weakness in cognitive control and were unrelated to substance use disorder, controlling for impulsivity. The findings suggest that maladaptive risk-taking characterized by weak cognitive control over reward-driven impulses is a phenomenon limited to only a sub-set of youth. 相似文献
275.
Despite the large contingent of students living in rural areas, existing research on the processes that precede the college enrollment of rural adolescents is limited. With a particular focus on gender, this study investigated rural adolescents’ perceptions of family and place and how these perceptions related to their educational aspirations and subsequent college enrollment using a nationwide sample of rural adolescents (N?=?3456; 52.5% female). Female adolescents reported higher academic achievement, educational aspirations, parental expectations, and family responsibility and enrolled in two-year and four-year institutions at greater rates compared to male adolescents, who reported significantly higher rural identity and perceptions of job opportunities in the rural community. Utilizing a multiple group moderated mediation approach, the results provided evidence that adolescents’ increased perceptions of their parents’ educational expectations were associated with increased educational aspirations and college enrollment and that adolescents’ increased perceptions of job opportunities in their rural community were associated with decreased educational aspirations. In addition, the results showed that gender moderated the relation between perceptions of job opportunities in the rural community and postsecondary enrollment. These findings highlight how the developmental resources of family and place relate to adolescents’ educational aspirations and subsequent postsecondary enrollment. 相似文献
276.
This paper appraises the role of critical-feminist figurations within the environmental humanities, focusing on the capacity of figures to produce situated environmental knowledges and pose site-specific ethical obligations. We turn to four environments—the home, the skies, the seas and the microscopic—to examine the work that various figures do in these contexts. We elucidate how diverse figures—ranging from companion animals to birds, undersea creatures and bugs—reflect productive traffic between longstanding concerns in feminist theory and the environmental humanities, and generate new insights related to situated knowledges, feminist care-ethics and the politics of everyday sensory encounters. We also argue, however, that certain figures have tested the limits of theoretical approaches which have emerged as the product of dialogue between feminist theory and environmental studies. In particular, we explore how particular figures have complicated ethical questions of how to intervene in broad environmental threats borne of anthropogenic activities, and of who or what to include in relational ethical frameworks. 相似文献
277.
Tanika Sarkar 《Feminist Review(on-Line)》2018,118(1):7-24
We set out by noting the preference for circular flows in ecological thought, and the related abhorrence of inefficiency and waste that Western ecology shares with mainstream economic thinking. This has often been manifest in a shared disdain both for uncontained, free-burning fire and for ‘unmanaged’ sexual desire. The paper constructs a ‘pyrosexual’ counter-narrative that explores the mutually constitutive and generative implication of sex and fire. Bringing together the solar ecology of Georges Bataille, feminist and queer thinking about sexuality and reproduction, and a range of ways of theorising biological life and fire, we explore how fire mediates between organismic desire and the energetic dynamics of the earth and solar system. The first section takes a genealogical approach to fire and sex that traces their entanglement from the initial ‘assembling’ of fire through to the emergence of a fire-handling creature. The second section looks at how fire has been contained and intensified by human actors, and the role that heat-driven transformations of inorganic matter have played in the incitement and channeling of desire in urban spaces. The third section addresses the development of industrial ‘heat engines’ and the implications for desire and reproduction of tapping vast reservoirs of subterranean solar energy. We round off by beginning to consider what alternative possibilities might lie in the renegotiation of sex and fire on a planet undergoing rapid change. 相似文献
278.
279.
280.
Jolien Trekels Kathrin Karsay Steven Eggermont Laura Vandenbosch 《Journal of youth and adolescence》2018,47(7):1440-1455
Although media exposure has been related to cognitive preoccupation with appearance, research rarely investigated adolescents’ behavioral self-sexualization. To address this gap, the present study among 12- to 16-year-olds (N?=?1527; 50.2% girls) in Austria, Belgium, Spain, and South-Korea (1) investigates whether different types of media use relate to self-sexualization, (2) explores the explanatory value of rewarded appearance ideals, and (3) considers culture and gender as moderating factors. Despite cultural variation, a general trend of increasing self-sexualization with social media use and magazine reading appeared across the countries. Moreover, women’s magazine reading and rewards were related to self-sexualization among all the girls across the countries, which suggests that girls may be more vulnerable to the examined effects. Overall, this study provides a better understanding of the unique contribution of specific media genres to youth’s self-sexualization and points at the importance of social media use in girls’ and boys’ engagement in sexualizing appearance behaviors across four countries. 相似文献