全文获取类型
收费全文 | 9083篇 |
免费 | 356篇 |
专业分类
各国政治 | 572篇 |
工人农民 | 366篇 |
世界政治 | 800篇 |
外交国际关系 | 409篇 |
法律 | 5238篇 |
中国政治 | 43篇 |
政治理论 | 1928篇 |
综合类 | 83篇 |
出版年
2021年 | 78篇 |
2020年 | 157篇 |
2019年 | 208篇 |
2018年 | 277篇 |
2017年 | 305篇 |
2016年 | 295篇 |
2015年 | 201篇 |
2014年 | 253篇 |
2013年 | 1126篇 |
2012年 | 264篇 |
2011年 | 259篇 |
2010年 | 210篇 |
2009年 | 205篇 |
2008年 | 242篇 |
2007年 | 259篇 |
2006年 | 254篇 |
2005年 | 212篇 |
2004年 | 225篇 |
2003年 | 216篇 |
2002年 | 190篇 |
2001年 | 264篇 |
2000年 | 214篇 |
1999年 | 181篇 |
1998年 | 121篇 |
1997年 | 111篇 |
1996年 | 78篇 |
1995年 | 89篇 |
1994年 | 81篇 |
1993年 | 91篇 |
1992年 | 128篇 |
1991年 | 159篇 |
1990年 | 134篇 |
1989年 | 146篇 |
1988年 | 134篇 |
1987年 | 158篇 |
1986年 | 141篇 |
1985年 | 153篇 |
1984年 | 140篇 |
1983年 | 141篇 |
1982年 | 106篇 |
1981年 | 94篇 |
1980年 | 90篇 |
1979年 | 96篇 |
1978年 | 77篇 |
1977年 | 60篇 |
1976年 | 68篇 |
1975年 | 63篇 |
1974年 | 75篇 |
1973年 | 68篇 |
1972年 | 60篇 |
排序方式: 共有9439条查询结果,搜索用时 15 毫秒
51.
This paper describes the governance system of Spanish listed firms in the early 1990's. Although the institutional setting of the Spanish Stock Exchanges differs little from other European national markets, we found important differences in several aspects of corporate governance. In particular, some of the standard mechanisms of control (e.g. boards and institutional shareholders) do not play an active role, whereas ownership is relatively concentrated. Moreover, power indices suggest that controlling blocs of large shareholders are very likely to form. We thus conclude that the ownership of shares is a pivotal mechanism in the governance of Spanish corporations. 相似文献
52.
Tracy L. Devine Guzmán 《Bulletin of Latin American research》2005,24(1):92-122
If categories of 'race' and nationality are social and historical constructions laden with irrefutable meaning and consequences, then ethnic identities, like any other forms of identity, are means to other ends that may or may not be particular. Twentieth‐century indigenist history in Brazil reveals how the cultural politics of indigenism and nationalism can coalesce in a tautological politics of identity that undermines individual liberty and democratic heterogeneity. The concepts 'post‐indigenism,'post‐nationalism' and 'post‐identity' point to the strategic suspension of the infinite heterogeneity of the political subject as a means to widen the ground of shared experience and common interests beyond the realm of hollow and oppressive essentialisms. 相似文献
53.
Charles B. Fleming Richard F. Catalano Monica L. Oxford Tracy W. Harachi 《Journal of Quantitative Criminology》2002,18(4):423-439
The social development model (SDM) is a theory of behavior that has proven useful in explaining the etiology of delinquency, violence, and substance use among adolescents as well as early antisocial behavior among pre-adolescents. A further test of the model is its generalizability across population groups. A section of the SDM representing prosocial influences in the etiology of problem behavior was compared for boys and girls and for children from low- and non low-income families using three waves of child, parent and teacher survey data on a sample of 851 elementary school students. Multiple group structural equation modeling was used to assess differences across groups in both measurement of model constructs and hypothesized structural paths between constructs. The results indicate overall similarity in the reliability of measurement models and validity of structural models. 相似文献
54.
55.
56.
57.
58.
The concentration of thyreoglobulin (tg) was determined for death caused by hanging, strangulation by ligature, and throttling. Cases of sudden death (traumatic aortic rupture, penetrating wounds of the heart) were used for comparison. The mean values in cases of hanging (149.9±202.3 ng/ml), strangulation by ligature (193.1±173.3), manual strangulation (561.6±173.9) are distinguishable from violent acute deaths (23.3±27.6) and living healthy individuals (17.3±16.1). By means of statistical comparisons, significant differences were found between throttling and strangulation by ligature and between throttling and hanging (adjusted P<0.001). In connection with examination of the bodies high tg values can be regarded as a vital reaction in obstructive asphyxia. 相似文献
59.
60.
A growing body of evidence shows that minorities are disproportionately the targets of police brutality, but important theoretical questions about the causes of that inequity remain unanswered. One promising line of research involves structural‐level analyses of the incidence of police brutality complaints; however, existing studies do not incorporate variables from alternative theoretical explanations. Drawing on the community accountability hypothesis and the threat hypothesis, we tested the predictions of two prominent structural‐level explanations of police brutality in a study of civil rights criminal complaints. The study included cities of 150,000+ population (n = 114). The findings reveal that two community accountability variables—ratio percent Hispanic citizens to percent Hispanic police officers and the presence of citizen review—were related positively to police brutality complaints, partially supporting that perspective. Two threat hypothesis measures of threatening people—percent black and percent Hispanic (in the Southwest)—were related positively to complaints, as predicted. The relative degree of support for the two hypotheses is assessed. 相似文献