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   24952篇
  免费   1011篇
  国内免费   5篇
各国政治   1036篇
工人农民   1011篇
世界政治   1830篇
外交国际关系   820篇
法律   16054篇
中国共产党   7篇
中国政治   202篇
政治理论   4801篇
综合类   207篇
  2021年   144篇
  2020年   370篇
  2019年   458篇
  2018年   522篇
  2017年   622篇
  2016年   648篇
  2015年   486篇
  2014年   526篇
  2013年   2359篇
  2012年   631篇
  2011年   724篇
  2010年   618篇
  2009年   654篇
  2008年   724篇
  2007年   733篇
  2006年   732篇
  2005年   663篇
  2004年   654篇
  2003年   669篇
  2002年   612篇
  2001年   1009篇
  2000年   862篇
  1999年   699篇
  1998年   401篇
  1997年   296篇
  1996年   313篇
  1995年   276篇
  1994年   325篇
  1993年   314篇
  1992年   485篇
  1991年   524篇
  1990年   507篇
  1989年   455篇
  1988年   488篇
  1987年   431篇
  1986年   504篇
  1985年   459篇
  1984年   368篇
  1983年   371篇
  1982年   277篇
  1981年   298篇
  1980年   205篇
  1979年   288篇
  1978年   191篇
  1977年   175篇
  1976年   155篇
  1975年   158篇
  1974年   191篇
  1973年   159篇
  1972年   152篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
941.
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   
942.

Research on the health benefits and consequences of close relationships has suggested the linkage in daily emotions (i.e., coregulation) between close partners is an important relationship dynamic. While the coupling of daily emotions among family members (parent–child and marital dyads) has been widely documented, research examining emotional coregulation among ethnic minority youth during adolescence, a period marked by heightened emotion and risk for psychopathology, remains an important area in need of exploration. This study examined correlates of emotional coregulation in a sample of Mexican-origin adolescents (Mage?=?15.02, SD?=?.83) and their parents (Mage?=?41.93, SD?=?6.70). Dyads reported on daily levels of distress and happiness for 14 consecutive days across two waves of data collection a year apart (nwave1?=?428 dyads, nwave2?=?336 dyads). Dyads who reported getting along were more likely to coregulate their daily happiness. Importantly, coregulation of distress was only present in older adolescents who reported above average levels of internalizing symptoms. The results suggest coregulation of distress may shape or be shaped by poor mental health during the later years of adolescence, a time when youth may be establishing a degree of emotional autonomy from parents.

  相似文献   
943.

Across industrialized nations, children and teens are a highly prized target for the advertising industry because young people have a tremendous influence on family purchases; however, media scholars have long suggested that young people are a fundamentally vulnerable audience because they lack the necessary developmental competencies to adequately process and protect themselves from advertising communications. Yet, the precise developmental mechanisms have not been clearly articulated nor is there a clear understanding of how these competencies extend across childhood contexts (e.g., developmental phase, cultures). The current study seeks to lend clarity to this matter by looking at the potential influence that children’s executive function and emotion regulation have on the relationship between television exposure (as a proxy of exposure to advertising messages and other consumption-oriented media content) and consumer behavior across a broad range of ages from two wealthy industrialized countries. Mothers of young elementary school children (5–8 years) and early adolescents (9–12 years) in the Netherlands (N?=?333, 51.7% female child) and the United States of America (N?=?810, 49.6% female child) took part in an online survey to report on their child’s cognitive/affective development, media use, and consumer behavior (i.e., purchase requests, purchase related conflict). The results showed that across ages, executive function via attentional shifting moderated the link between purchase requests and purchase conflict, whereas positively valenced emotion regulation moderated the same relationship but only for older children. Lastly, the findings revealed that while there are differences in reported behavior among children in these two countries, the developmental processes tend to work in the same manner. The discussion focuses on what these findings mean for children’s consumer development as they approach adolescence and how researchers and child advocates should take these developmental factors into account when considering children’s potential vulnerability as consumers.

  相似文献   
944.
Using the 2017 post-election German Longitudinal Election Study (GLES), this article examines the voters for the Alternative for Germany (AfD) in the 2017 German federal election. We show that AfD voters in 2017 were truly ‘flesh of the same flesh’ of the mainstream German political parties, with the AfD drawing its voters from across the political party spectrum as well as from previous non-voters in 2013. In contrast to previous scholarship, we find that in most respects AfD voters in 2017 did not differ demographically from voters for all other parties, be that in terms of gender, education, employment status, and union membership. Furthermore, we find that AfD voters were not driven by anxiety about their own economic situation: they are no ‘losers of globalisation.’ Instead, AfD voters in 2017 were driven solely by two factors: their attitudes towards immigrants/refugees and anti-establishment sentiment/satisfaction with democracy in Germany.  相似文献   
945.
Why did the Punjab bear the brunt of the mass violence and the migration that accompanied the partition of India? This paper makes the case for analytical eclecticism by showing that the following three explanations – centred respectively on democratisation, nationalism, and ideas; the commitment problem; and the security dilemma – account for the violence/migration in the different stages in the run-up to the partition of India. Instead of arguing that ‘everything mattered’, this paper elucidates the complex causality at work by demonstrating how these factors interacted with one another during the different stages leading to India’s partition.  相似文献   
946.
O’Donnell analyses the confluence of Islamophobia and anti-government conspiracy theory in the works of the far-right think tank, the Center for Security Policy (CSP). He argues that, rather than only being a contemporary form of the religious and racialized demonologies that code ‘Islam’ as being the constitutive outside of ‘the ‘West—irrational, religious and authoritarian versus rational, secular and democratic—Islamophobic conspiracism should also be examined in the context of anxieties over the erosion of personal and state sovereignty under neoliberalization. Mobilizing an Islamophobic demonology that constructs ‘Muslims’ as inassimilable to ‘American’ subjectivity, the CSP's Islamophobic conspiracism projects this construction of absolute alterity on to American social and state systems. In doing so, O’Donnell contends, Islamophobic conspiracism takes neoliberalization's estrangement of the state and its citizens to its logical conclusion, transfiguring the societal processes that impact on the freedom of the individual—notably the state and civil society—into something inassimilable to that individual's claims to self-ownership and self-mastery.  相似文献   
947.
This article draws on some findings from research which investigated penal voluntary sector adaptation to the mixed market in criminal justice services. The article firstly reprises the main trends for aligning state relationships with the voluntary sector from the 1980s to the present. We then outline some findings about adaptive experiences, situations and practices of the voluntary sector in criminal justice resettlement in the light of considerable upheaval. The research found that service providing voluntary sector organisations (VSOs) either outwardly comply with, or, in a minority of cases, actively embrace, competitive marketised models of service delivery. Secondly, the sector has normalised commercial approaches to organisational efficiency as well as aligned with bureaucratic practices common to the statutory sector. Despite charges that they are effectively co‐opted by both state and market interests, many have reported conflicts between prioritising long‐term financial viability with their founding ‘ethos and values’. We conclude that while many VSOs have successfully adjusted to market and bureaucratic norms, aspects of that repositioning have been at a cost to their traditions of relative autonomy, localism and distinctiveness, to the possible detriment of a vigorous civil society.  相似文献   
948.
Adolescence is a challenging developmental period marked with declines in emotional well-being; however, self-compassion has been suggested as a protective factor. This cross-sectional survey study (N?=?765, grades 7th to 12th; 53?% female; 4?% Hispanic ethnicity; 64?% White and 21?% Black) examined whether adolescents’ self-compassion differed by age and gender, and secondly, whether its associations with emotional well-being (perceived stress, life satisfaction, distress intolerance, depressive symptoms, and anxiety) also differed by age and gender. The findings indicated that older females had the lowest self-compassion levels compared to younger females or all-age males. Self-compassion was associated with all emotional well-being measures, and gender and/or age moderated the associations with anxiety and depressive symptoms. Among older adolescents, self-compassion had a greater protective effect on anxiety for boys than for girls. Additionally, older adolescents with low and average self-compassion had greater levels of depressive symptoms than those with high self-compassion. These results may inform for whom and at what age self-compassion interventions may be implemented to protect adolescents from further declines in emotional well-being.  相似文献   
949.
Are internalizing and externalizing behavior problems interrelated via mutually reinforcing relationships (with each behavior leading to increases over time in levels of the other behavior) or mutually suppressing relationships (with each behavior leading to decreases over time in levels of the other behavior)? Past research on the directionality of these relationships has led to ambiguous results, particularly in adolescence. Furthermore, the extent to which prior results will generalize to adolescents with low levels of cognitive abilities remains unknown. This second limit is particularly important, given that these adolescents are known to present higher levels of externalizing and internalizing behaviors than their peers with average-to-high levels of cognitive abilities, and that the mechanisms involved in the reciprocal relationships between these two types of behaviors may differ across both populations. This study examines the directionality of the longitudinal relationships between externalizing and internalizing behavior problems as rated by teachers across three measurement waves (corresponding to Grades 8–10) in matched samples of 138 adolescents (34.78?% girls) with low levels of cognitive abilities and 556 adolescents (44.88?% girls) with average-to-high levels of cognitive abilities. The results showed that the measurement structure was fully equivalent across time periods and groups of adolescents, revealing high levels of developmental stability in both types of problems, and moderately high levels of cross-sectional associations. Levels of both internalizing and externalizing behaviors were higher among adolescents with low levels of cognitive abilities relative to those with average-to-high levels of cognitive abilities. Finally, the predictive analyses revealed negative reciprocal longitudinal relationships (i.e., mutually suppressing relationships) between externalizing and internalizing problems, a result that was replicated within samples of adolescents with low, and average-to-high levels of cognitive ability.  相似文献   
950.
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   
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