全文获取类型
收费全文 | 1272篇 |
免费 | 65篇 |
专业分类
各国政治 | 138篇 |
工人农民 | 73篇 |
世界政治 | 111篇 |
外交国际关系 | 111篇 |
法律 | 579篇 |
中国政治 | 68篇 |
政治理论 | 250篇 |
综合类 | 7篇 |
出版年
2023年 | 14篇 |
2022年 | 9篇 |
2021年 | 29篇 |
2020年 | 45篇 |
2019年 | 49篇 |
2018年 | 68篇 |
2017年 | 76篇 |
2016年 | 59篇 |
2015年 | 47篇 |
2014年 | 51篇 |
2013年 | 177篇 |
2012年 | 73篇 |
2011年 | 102篇 |
2010年 | 37篇 |
2009年 | 30篇 |
2008年 | 61篇 |
2007年 | 54篇 |
2006年 | 57篇 |
2005年 | 41篇 |
2004年 | 52篇 |
2003年 | 42篇 |
2002年 | 30篇 |
2001年 | 21篇 |
2000年 | 14篇 |
1999年 | 6篇 |
1998年 | 9篇 |
1997年 | 15篇 |
1996年 | 6篇 |
1995年 | 5篇 |
1994年 | 10篇 |
1993年 | 5篇 |
1992年 | 2篇 |
1991年 | 6篇 |
1990年 | 4篇 |
1989年 | 1篇 |
1988年 | 3篇 |
1987年 | 4篇 |
1986年 | 4篇 |
1985年 | 1篇 |
1984年 | 2篇 |
1983年 | 4篇 |
1982年 | 1篇 |
1980年 | 3篇 |
1978年 | 1篇 |
1977年 | 2篇 |
1976年 | 1篇 |
1967年 | 2篇 |
1966年 | 1篇 |
1959年 | 1篇 |
排序方式: 共有1337条查询结果,搜索用时 15 毫秒
41.
María A. Ramos-Olazagasti Héctor R. Bird Glorisa J. Canino Cristiane S. Duarte 《Journal of youth and adolescence》2017,46(1):28-44
Early alcohol use is associated with multiple negative outcomes later in life, including substance use disorders. Identification of factors related to this very early risk indicator can help inform early prevention efforts. This study prospectively examined the relationship between childhood adversities and early initiation of alcohol use (by age 14) among Puerto Rican youth, the Latino subgroup at highest risk for alcohol use disorders in adulthood. The data come from the Boricua Youth Study, a longitudinal study of Puerto Rican youth in two sites (South Bronx, New York, and the standard metropolitan area of San Juan, Puerto Rico). We focus on youth who were ages 10 and older at Wave 1 [M age at Wave 1 (SE)?=?11.64(0.05), N?=?1259, 48.85?% females]. Twelve childhood adversities were measured at Wave 1 and include 10 adverse childhood experiences commonly studied and two additional ones (exposure to violence and discrimination) that were deemed relevant for this study’s population. Early initiation of alcohol use was determined based on youth report at Waves 1 through 3 (each wave 1 year apart). Cox proportional hazards models showed that, when considered individually, adversities reflecting child maltreatment, parental maladjustment, and sociocultural stressors were related to early initiation of alcohol use. Significant gender interactions were identified for parental emotional problems and exposure to violence, with associations found among girls only. Adversities often co-occurred, and when they were considered jointly, physical and emotional abuse, parental antisocial personality, and exposure to violence had independent associations with early alcohol use, with a stronger influence of exposure to violence in girls compared to boys. The accumulation of adversities, regardless of the specific type of exposure, increased the risk for starting to drink at a young age in a linear way. The associations between childhood adversities and early alcohol use were generally consistent across sociocultural contexts, in spite of differences in the prevalence of exposure to adversity. Our findings highlight the importance of targeting multiple adversities and expanding the notion of adversity to capture the experiences of specific groups more adequately. 相似文献
42.
43.
44.
Jeremy M. Berkowitz 《国际相互影响》2018,44(4):709-748
State sponsorship of terrorism, where a government deliberately provides resources and material support to a terrorist organization, is common in the international system. Sponsorship can provide significant strategic and political benefits for a state, but there are inherent international and domestic risks associated with delegating foreign policy to these actors. Using principal–agent analysis, I develop a model that evaluates the impact of potential costs and benefits on a state’s decision to sponsor terrorism. I test my model by using a novel dataset on sponsorship behaviors that ranges from 1970 to 2008. The results of my analysis support the validity of the principal–agent model in explaining sponsorship, as states will be more likely to engage in sponsorship when the strategic benefits of weakening the targeted state are high and the risks of international reputation loss and domestic dissatisfaction are low. 相似文献
45.
This paper studies changes in voting preferences over election campaigns. Building on the literature on spatial models and valence issues, we study whether (1) ideological distance to political parties, (2) assessments of party competence to handle different policy issues, and (3) voter-updated candidate evaluations are factors that explain shifts in voter choices in the weeks preceding the election. To test our hypotheses, we use data from three survey panels conducted for the 2008, 2011 and 2015 Spanish general elections. Our findings show that valence factors are more influential than ideological indifference to account for campaign conversion. 相似文献
46.
47.
Understanding the prevalence and correlates of decisional autonomy within specific cultural contexts is necessary to fully
comprehend how family processes are embedded within culture. The goals of this study were to describe mothers’ and fathers’
decision-making with adolescents (M = 12.51 years, SD = 0.58; 51% female), including parent-unilateral, joint, and youth-unilateral decision-making, and to examine
the socio-cultural and family characteristics associated with these different types of decision-making in 246 Mexican-origin
families. Mothers reported more joint and youth-unilateral decision-making and less parent-unilateral decision-making than
did fathers. Fathers reported more youth-unilateral decision-making with sons than with daughters. Further, for mothers, more
traditional gender role attitudes and higher levels of mother-adolescent conflict were associated with more parent-unilateral
and less joint decision-making. In contrast, for fathers, lower levels of respect values were associated with more youth-unilateral
decision-making with sons, and higher levels of parent-adolescent warmth were associated with more youth-unilateral decision-making
with daughters. The importance of understanding the different correlates of mothers’ and fathers’ decision-making with sons
versus daughters is discussed. 相似文献
48.
Roosa MW O'Donnell M Cham H Gonzales NA Zeiders KH Tein JY Knight GP Umaña-Taylor A 《Journal of youth and adolescence》2012,41(3):307-319
Mexican American youth are at greater risk of school failure than their peers. To identify factors that may contribute to
academic success in this population, this study examined the prospective relationships from 5th grade to 7th grade of family
(i.e., human capital [a parent with at least a high school education], residential stability, academically and occupationally
positive family role models, and family structure) and individual characteristics (i.e., externalizing symptoms, bilingualism,
gender, and immigrant status) to the academic performance of 749 Mexican American early adolescents (average age = 10.4 years
and 48.7% were girls in 5th grade) from economically and culturally diverse families as these youth made the transition to
junior high school. Results indicated that while controlling for prior academic performance, human capital and positive family
role models assessed when adolescents were in 5th grade positively related to academic performance in 7th grade. Further,
being a girl also was related to greater 7th grade academic success, whereas externalizing symptoms were negatively related
to 7th grade academic performance. No other variables in the model were significantly and prospectively related to 7th grade
academic performance. Implications for future research and interventions are discussed. 相似文献
49.
Aerika S. Brittian Megan O’Donnell George P. Knight Gustavo Carlo Adriana J. Umaña-Taylor Mark W. Roosa 《Journal of youth and adolescence》2013,42(3):328-341
Experiences with perceived discrimination (e.g., perceptions of being treated unfairly due to race or ethnicity) are expected to impact negatively youths’ prosocial development. However, resilience often occurs in light of such experiences through cultural factors. The current longitudinal study examined the influence of perceived discrimination on the emergence of Mexican American adolescents’ later prosocial tendencies, and examined the mediating role of Mexican American values (e.g., familism, respect, and religiosity). Participants included 749 adolescents (49 % female) interviewed at 5th, 7th, and 10th grade. Results of the current study suggested that, although perceived discrimination was associated negatively with some types of prosocial tendencies (e.g., compliant, emotional, and dire) and related positively to public prosocial helping, the associations were mediated by youths’ Mexican American values. Directions for future research are presented and practical implications for promoting adolescents’ resilience are discussed. 相似文献
50.
In this article, we apply a new, original technique of cohort analysis to test empirically whether political disenchantment in the post-communist countries of Central and Eastern Europe can be linked to the previous political culture. On the basis of International Social Survey Programme 1996 and 2006 data we find a surprisingly similar and unique cohort effect in all analysed post-communist countries, reflecting persistent generational differences in perceived political competence (interest and understanding of political processes). However, the communist legacy does not seem to be important for explaining low self-efficacy or distrust in political authorities and their responsiveness to citizens' demands. 相似文献