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   10422篇
  免费   583篇
各国政治   416篇
工人农民   354篇
世界政治   807篇
外交国际关系   299篇
法律   7069篇
中国共产党   1篇
中国政治   54篇
政治理论   1965篇
综合类   40篇
  2021年   60篇
  2020年   192篇
  2019年   232篇
  2018年   231篇
  2017年   291篇
  2016年   295篇
  2015年   245篇
  2014年   268篇
  2013年   984篇
  2012年   234篇
  2011年   302篇
  2010年   286篇
  2009年   299篇
  2008年   286篇
  2007年   257篇
  2006年   273篇
  2005年   248篇
  2004年   249篇
  2003年   232篇
  2002年   237篇
  2001年   462篇
  2000年   418篇
  1999年   291篇
  1998年   181篇
  1997年   147篇
  1996年   123篇
  1995年   117篇
  1994年   144篇
  1993年   131篇
  1992年   196篇
  1991年   217篇
  1990年   203篇
  1989年   212篇
  1988年   204篇
  1987年   190篇
  1986年   231篇
  1985年   206篇
  1984年   159篇
  1983年   169篇
  1982年   112篇
  1981年   120篇
  1980年   85篇
  1979年   131篇
  1978年   74篇
  1977年   73篇
  1976年   69篇
  1974年   73篇
  1973年   66篇
  1972年   66篇
  1970年   46篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
361.
The impact of institutions on the economic vote stands as a well‐established proposition for the advanced democracies of Europe. We know less, however, regarding the institutional effects on the economic vote in the developing democracies of Latin America. Carrying out an analysis of presidential elections in 18 Latin American countries, we offer evidence that the usual Eurocentric conceptualization of the clarity of responsibility is not ideal for understanding the economic vote in this region. There does exist a powerful effect of institutions on the economic vote within Latin American democracies, but one uniquely associated with its presidential regimes and dynamic party systems. Rules for these elections—such as concurrence, term limits, and second‐round voting—suggest that we should reconceptualize the notion of the clarity of responsibility in Latin America, focusing more on individuals in power and their constraints, and less on the political parties from which they hail.  相似文献   
362.
During the last decades, the activities of pirates have increased exponentially in Eastern Africa, with their attacks becoming considerably more violent. In addition to the intrastate and interstate conflicts, the lack of state capacity and the presence of terrorist groups, maritime piracy represents a serious and sustained threat to economic security. Indeed, from an economic point of view, pirates affect international trade through an increasing insecurity related to the prompt delivery of the goods transported. The aim of this work is to explore the main works on maritime piracy analyzed in quantitative economics.  相似文献   
363.
364.
Despite having equally vast endowments of natural resources and similar socioeconomic profiles, the Indian states of Bihar and Odisha pursued markedly different development strategies during India’s first decade of economic liberalization. Whereas Bihar turned away from its natural resource sector and adopted policies of social empowerment, Odisha courted private investment in extractive industries and aggressively pursued market reforms. To account for this divergence, we argue that the social composition of political power in each state directly shaped the strategies that leaders embraced towards the natural resource sector and overall development. This paper makes contributions to the writings on natural resources and the political economy of India. We show that the presence of abundant natural resources does not necessarily result in a predictable pathway of sectoral and economic policy outcomes. Instead, social factors can be a powerful determinant of how resource-rich states approach their economies.  相似文献   
365.
This article presents an analytic approach to the study of gender meaning in an academic context. In the presentation empirical material from an interview study among 29 Danish male and female university students is applied. The analytic approach is based on the conception of gender meaning as a culturally constructed phenomenon in continuous process. Current gender meaning is seen as a construction based on the idea of coherence between the gendered sign on the body and a variety of components including sexual and professionally related aspects. The connections between body sign and the components as well as among the components themselves are a continuous goal of negotiation processes among the male and female students.  相似文献   
366.
Some Aboriginal youth are at disproportionate risk of using substances and developing abuse and dependence disorders. However, not all Aboriginal youth misuse substances and limited research has examined the protective factors conferring against substance use among these youth. The present study aimed to identify protective factors related to the alcohol use trajectories from early adolescence to emerging adulthood among off-reserve Canadian Aboriginal youth. Participants (N = 330; 50.3% male) aged 12–23 were selected from cycles 2–7 of Statistics Canada’s NLSCY. Multilevel modeling was employed to identify protective factors for two constructs of alcohol use. Participation in weekly activities and optimism were found to be protective for both the frequency of alcohol use and heavy drinking trajectories. Attendance of religious services was also found to be protective for heavy drinking behaviors. In contrast, positive peer relationships were a risk factor for frequency of alcohol use, but not heavy drinking. The results provide preliminary evidence of important developmental factors to integrate into substance use intervention programs targeting Aboriginal youth.  相似文献   
367.
Labor market dualism—the segmentation of workers between formal, legally protected employment and informal, unprotected status—has long drawn attention from scholars and policymakers in Latin America. This article argues that lasting patterns of economic and political segmentation of workers arose earlier in the region's history than has previously been understood, well before the classic “incorporation” period. Late‐nineteenth‐century practices for the recruitment and retention of workers shaped Latin America's first sets of labor laws, most notably those governing union organization and individual worker job stability. Subsequently, these first laws served as important templates for development, constraining and conditioning the labor codes adopted under mass‐based politics. Using historical data drawn from Chile, Peru, and Argentina, this article shows how differing recruitment practices and variation in the extension of effective suffrage rights and electoral participation shaped early legal labor market segmentation and inequality in Latin America.  相似文献   
368.
Depression is a common and debilitating disorder in adolescence. Sleep disturbances and depression often co-occur with sleep disturbances frequently preceding depression. The current study investigated whether catastrophic worry, a potential cognitive vulnerability, mediates the relationship between adolescent sleep disturbances and depressive symptoms, as well as whether there are gender differences in this relationship. High school students, ages 16–18, n = 1,760, 49 % girls, completed annual health surveys including reports of sleep disturbance, catastrophic worry, and depressive symptoms. Sleep disturbances predicted depressive symptoms 1-year later. Catastrophic worry partially mediated the relationship. Girls reported more sleep disturbances, depressive symptoms, and catastrophic worry relative to boys. The results, however, were similar regardless of gender. Sleep disturbances and catastrophic worry may provide school nurses, psychologists, teachers, and parents with non-gender specific early indicators of risk for depression. Several potentially important practical implications, including suggestions for intervention and prevention programs, are highlighted.  相似文献   
369.
The peer context is a central focus in research on adolescent risk behaviors but few studies have investigated the role of the peer context in the perpetration of adolescent dating violence. This longitudinal study examined between-subjects and within-person contemporaneous and lagged effects of peer attributes, measured with social network analyses, on trajectories of dating violence perpetration and determined if effects varied by grade and/or sex of the adolescent. Data are from adolescents who participated in a five-wave panel study beginning when they were in 7 through 9th grade and ending when they were in 10 through 12th grade (n = 3,412); half were male, 40.5 % were white, 49.9 % were black and 10.4 % were of another race/ethnicity. Significant between-subjects effects indicate that adolescents who typically have friends who use dating violence, and girls who are typically high in social status, are at increased risk for using dating violence throughout adolescence. Adolescents who typically have high quality friendships and girls who typically have friends with pro-social beliefs are at decreased risk for using dating violence throughout adolescence. Significant within-person contemporaneous effects indicate that both boys and girls reported lower levels of dating violence than usual at times when they had more friends with pro-social beliefs, and reported higher levels of dating violence than usual at times when they had higher social status. None of the lagged effects were significant and none of the effects varied across grade. These findings suggest that the peer context plays an important role in the development of the perpetration of adolescent dating violence.  相似文献   
370.
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   
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