全文获取类型
收费全文 | 15696篇 |
免费 | 483篇 |
专业分类
各国政治 | 559篇 |
工人农民 | 1276篇 |
世界政治 | 677篇 |
外交国际关系 | 568篇 |
法律 | 9793篇 |
中国政治 | 40篇 |
政治理论 | 3229篇 |
综合类 | 37篇 |
出版年
2020年 | 174篇 |
2019年 | 192篇 |
2018年 | 1450篇 |
2017年 | 1405篇 |
2016年 | 1245篇 |
2015年 | 285篇 |
2014年 | 209篇 |
2013年 | 829篇 |
2012年 | 356篇 |
2011年 | 1083篇 |
2010年 | 1206篇 |
2009年 | 819篇 |
2008年 | 900篇 |
2007年 | 841篇 |
2006年 | 185篇 |
2005年 | 227篇 |
2004年 | 360篇 |
2003年 | 309篇 |
2002年 | 170篇 |
2001年 | 314篇 |
2000年 | 258篇 |
1999年 | 232篇 |
1998年 | 111篇 |
1997年 | 78篇 |
1996年 | 88篇 |
1995年 | 112篇 |
1994年 | 113篇 |
1993年 | 92篇 |
1992年 | 154篇 |
1991年 | 162篇 |
1990年 | 147篇 |
1989年 | 160篇 |
1988年 | 126篇 |
1987年 | 143篇 |
1986年 | 129篇 |
1985年 | 135篇 |
1984年 | 112篇 |
1983年 | 125篇 |
1982年 | 89篇 |
1981年 | 83篇 |
1980年 | 59篇 |
1979年 | 114篇 |
1978年 | 77篇 |
1977年 | 65篇 |
1976年 | 51篇 |
1975年 | 47篇 |
1974年 | 55篇 |
1973年 | 58篇 |
1972年 | 44篇 |
1968年 | 41篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
Wolfgang Durner 《Natur und Recht》2010,32(12):900-900
93.
94.
This study examined crime and violence against abortion clinics, testing elements of several theories that may help explain the variation of such attacks. The study theoretically and methodologically improved upon the prior research on abortion-related crime and violence. Theoretically, it investigated previously unexamined hypotheses from the social movement literature that may be relevant to this type of behavior. Methodologically, it used more careful measures for several variables, employed unique and heretofore ignored data bases, and examined hundreds of criminal acts across several types of crime (e.g., violence, vandalism, and harassment) directed at abortion clinics. Employing robust logistic regression and correcting for clustering of clinics by state, the study investigated the cross-sectional effects of state-level cultural and structural characteristics on anti-abortion crimes against clinics and staff. Results indicated that some crimes against clinics are more likely in areas where female empowerment is weaker, female victimization is more tolerated, and the anti-abortion movement has failed to reduce abortions. 相似文献
95.
96.
This paper aims to review randomized experiments in criminology with offending outcomes and reasonably large numbers that were published between 1982 and 2004. A total of 83 experiments are summarized, compared with only 35 published between 1957 and 1981: 12 on policing, 13 on prevention, 14 on corrections, 22 on courts, and 22 on community interventions. Randomized experiments are still relatively uncommon, but there have been more large-scale multi-site experiments and replication programs. There have also been several experiments in which 100 or more places were randomly assigned. Relatively few experiments (only 10 out of 83) were conducted outside the United States. Meta-analyses suggest that prevention methods, correctional therapy, batterer programs, drug courts, juvenile restitution and deterrent policing were effective in reducing offending, while Scared Straight and boot camp programs caused a significant increase in offending. 相似文献
97.
In this article we explore how much state is necessary to make governance work. We begin by clarifying concepts of governance and the “shadow of hierarchy” and we follow this clarification with a brief overview of empirical findings on governance research in developed countries. We then discuss the dilemmas for governance in areas of limited statehood, where political institutions are too weak to hierarchically adopt and enforce collectively binding rules. While prospects for effective policymaking appear to be rather bleak in these areas, we argue that governance research has consistently overlooked the existence of functional equivalents to the shadow of hierarchy. We assert that governance with(out) government can work even in the absence of a strong shadow of hierarchy, we identify functional equivalents to the shadow of hierarchy, and we discuss to what extent they can help overcome issues of legitimacy and effectiveness in areas of limited statehood. 相似文献
98.
J B Kempton A Sirignano D H DeGaetano P J Yates W F Rowe 《Journal of forensic sciences》1992,37(6):1534-1540
The fingernail ridge patterns of a pair of identical twins were compared to each other, their parents, and an unrelated subject. The patterns of the twins' nails showed regions of strong similarity but were distinguishable from one another. Fewer similarities were found when comparing the nails to those of the parents and the unrelated control. The twins were shown to be monozygotic by means of DNA profiling. This therefore represents the first demonstration of unique fingernail ridge patterns in subjects shown conclusively to be identical twins. When the fingernail ridge patterns were examined with a scanning electron microscope, the backscattered electron (BEI) images were found to have superior contrast when compared to the secondary electron (SEI) images. 相似文献
99.
100.
An important national initiative in juvenile justice is Juvenile Offender Reentry (JOR). The renewed emphasis on offender reintegration has generated significant attention to juvenile justice practices, with the notable exception of juvenile confinement facilities. Juvenile detention and, to a lesser degree, juvenile corrections practitioners are involved but not invested in reentry, having made very few programmatic changes to accommodate JOR initiatives largely because these initiatives have been external to the institution and its staff. Yet, reentry is a powerful concept for juvenile facility practitioners, and the application of reentry principles could have a profound impact on daily operations. This article addresses a range of issues about investing juvenile institutions in reentry practices. Several reentry models are discussed along with their implications for daily operations and programs. 相似文献