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   25123篇
  免费   488篇
各国政治   903篇
工人农民   1637篇
世界政治   1693篇
外交国际关系   847篇
法律   14759篇
中国共产党   2篇
中国政治   83篇
政治理论   5510篇
综合类   177篇
  2020年   225篇
  2019年   266篇
  2018年   1543篇
  2017年   1514篇
  2016年   1377篇
  2015年   359篇
  2014年   358篇
  2013年   1712篇
  2012年   595篇
  2011年   1289篇
  2010年   1289篇
  2009年   922篇
  2008年   1143篇
  2007年   1130篇
  2006年   460篇
  2005年   467篇
  2004年   569篇
  2003年   566篇
  2002年   413篇
  2001年   688篇
  2000年   622篇
  1999年   509篇
  1998年   298篇
  1997年   254篇
  1996年   223篇
  1995年   230篇
  1994年   267篇
  1993年   226篇
  1992年   339篇
  1991年   372篇
  1990年   331篇
  1989年   344篇
  1988年   320篇
  1987年   334篇
  1986年   338篇
  1985年   341篇
  1984年   296篇
  1983年   324篇
  1982年   263篇
  1981年   242篇
  1980年   180篇
  1979年   251篇
  1978年   171篇
  1977年   154篇
  1976年   131篇
  1975年   121篇
  1974年   135篇
  1973年   117篇
  1972年   112篇
  1971年   94篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
851.
Right-wing populist parties portray immigrants as economic or symbolic threats in their political advertisements by constructing a moral divide between the “good” ordinary people and “bad” immigrants. Yet, it remains unclear how these different threat appeals contribute to the formation of anti-immigrant attitudes among citizens and what role visual elements play in producing these effects. A survey-experiment with a quota sample of 471 participants reveals that, overall, symbolic threat appeals exert stronger effects on anti-immigrant attitudes than economic ones. When presented via text alone, only symbolic—not economic—threat appeals increased anti-immigrant attitudes via the activation of heuristic processing such as the reliance on negative stereotypes or feelings of anxiety, in particular among lower-educated citizens. When visuals were present, both types of threat appeals enhanced anti-immigrant attitudes among citizens across all education levels based on heuristic processing. Additionally, high image-text congruency induced cognitive argument approval resulting in higher anti-immigrant attitudes.  相似文献   
852.
This article argues that the effectiveness of the tactics ruling parties use to control the electoral arena may depend on the electoral experience of its subordinates. To substantiate this point, the work examines Russia’s “locomotives” – the practice of placing regional governors on the list of the ruling party, United Russia, during national legislative elections. It argues that electoral payoffs also came from select regions without locomotives. Given the move to appointed governors, list exclusion likely indicated gubernatorial vulnerability. As a result, governors left off United Russia’s list may have responded by seeking to demonstrate their electoral utility, and those with longer tenures were more likely to succeed in these efforts. An analysis of the 2007 Duma elections shows that United Russia’s vote share was higher in regions where long-serving governors were left off the list. Since Russia’s appointment system dramatically changed the gubernatorial corps between 2007 and 2011, the article also considers changes in the effects of list placement over time. It finds that the relationship between list exclusion and higher vote shares for United Russia disappears as governors with electoral experience were removed from office.  相似文献   
853.
The One Laptop per Child (OLPC) project aims to make low-cost computers accessible to the “world’s poorest children,” presuming that the gadgets will support their empowerment via education. The project’s success globally, however, has been mixed at best, with many countries terminating their purchases due to cost, inadequate infrastructure, and negative side effects. In October 2010, Ghana suspended the country’s 3-year participation. This study examines the complex history and failure of OLPC Ghana in two pilot schools, one urban and one rural, with particular attention to gender bias. The analysis draws on interviews with government personnel, students, and teachers in the pilot classes. Despite lacking electric power in the rural community, UNDP’s Millennium Villages Project played a strong support role, making OLPC somewhat more effective with less of a gender divide in the rural school than in the urban school in Accra. Both pilot schools faced severe sustainability challenges raising decade-old questions about modernity and technological determinism. Further, in both schools, particularly the urban school, a digital divide by gender was evident.  相似文献   
854.
In light of changing global trends that connect women’s empowerment and development, this paper extends debates by exploring how projects aimed at empowering women in the Global South intertwine with diverse women’s lived realities in ways that complicate assessments of “success” or “failure.” The article begins by analyzing the incorporation of the concept of empowerment into mainstream development, demonstrating that the conceptual fuzziness of empowerment has allowed it to be associated with vastly different development strategies: some have interpreted it narrowly to promote self-help strategies whereas others have interpreted it broadly to promote structural change. The former has targeted women with “choice-enhancing” resources that are thought to have spillover effects; the latter tends to adopt a more holistic approach. In order to explore how these contrasting strategies affect women’s empowerment experiences and outcomes on the ground, this article then draws on comparative ethnographies of two microfinance non-governmental organizations (NGOs) that are emblematic of these diverging approaches. It finds that despite their differences, both spillover and holistic approaches lead to diverse and contradictory experiences that defy easy classification as “empowering” or “disempowering.” This finding reveals the advantages and limitations of relying on the concept of empowerment for evaluating development outcomes and raises questions about our ability to generalize about the effects of the varying approaches encompassed under the current feminization of policy. The analysis also suggests that we should adjust our understanding of women’s agency to include the agency women exercise when they transform, challenge, or reject empowerment projects themselves.  相似文献   
855.
856.
857.
858.
This paper deals with civil society mobilizations and resistance in relation to a world heritage site—the ninth-century Khmer temple Preah Vihear, which is located in the northern province of Cambodia and borders eastern Thailand. In particular, the paper explores resistance in terms of (re)categorizations from a historical and discursive–materialistic perspective. The field of resistance studies has mainly been preoccupied with entities such as texts, signs, symbols, identity, and language. In this article, however, we bring in physical and material entities in order to display the ways in which matter is of importance in the (re)construction of discourses and thereby for resistance.  相似文献   
859.
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   
860.
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