全文获取类型
收费全文 | 1474篇 |
免费 | 69篇 |
专业分类
各国政治 | 105篇 |
工人农民 | 80篇 |
世界政治 | 175篇 |
外交国际关系 | 94篇 |
法律 | 726篇 |
中国政治 | 10篇 |
政治理论 | 341篇 |
综合类 | 12篇 |
出版年
2023年 | 15篇 |
2022年 | 7篇 |
2021年 | 15篇 |
2020年 | 55篇 |
2019年 | 50篇 |
2018年 | 49篇 |
2017年 | 66篇 |
2016年 | 61篇 |
2015年 | 63篇 |
2014年 | 60篇 |
2013年 | 260篇 |
2012年 | 64篇 |
2011年 | 46篇 |
2010年 | 45篇 |
2009年 | 37篇 |
2008年 | 52篇 |
2007年 | 48篇 |
2006年 | 46篇 |
2005年 | 51篇 |
2004年 | 50篇 |
2003年 | 41篇 |
2002年 | 31篇 |
2001年 | 34篇 |
2000年 | 50篇 |
1999年 | 23篇 |
1998年 | 25篇 |
1997年 | 20篇 |
1996年 | 14篇 |
1995年 | 13篇 |
1994年 | 13篇 |
1993年 | 13篇 |
1992年 | 10篇 |
1991年 | 7篇 |
1990年 | 10篇 |
1989年 | 14篇 |
1988年 | 11篇 |
1987年 | 10篇 |
1986年 | 7篇 |
1985年 | 4篇 |
1984年 | 9篇 |
1983年 | 8篇 |
1982年 | 4篇 |
1981年 | 4篇 |
1979年 | 4篇 |
1978年 | 4篇 |
1975年 | 3篇 |
1974年 | 2篇 |
1973年 | 2篇 |
1969年 | 2篇 |
1965年 | 2篇 |
排序方式: 共有1543条查询结果,搜索用时 8 毫秒
61.
Violence,Guns, and Suicide in New Orleans: Results from a Qualitative Study of Recent Suicide Decedents 下载免费PDF全文
Rajeev Ramchand Ph.D. Enchanté Franklin M.S.W. M.A. Elizabeth Thornton M.A. Sarah M. Deland M.D. Jeffrey C. Rouse M.D. 《Journal of forensic sciences》2018,63(5):1444-1449
Many Americans own guns to protect themselves against other people, but there is evidence that both victimization and gun access increase suicide risk. We conducted qualitative interviews with informants of 17 suicide cases in New Orleans of the 60 who died between January 2015 and April 2016 to understand the relationship between past trauma, gun access and storage, and suicide. Nine cases had experienced a past trauma, including three who had recently had a family member killed by homicide. Eight died via firearm; of those, seven owned the guns they used to take their lives and stored them locked (but loaded) at home or in their cars. Preventing community violence and addressing its sequelae may be important for reducing suicides. A multi‐pronged strategy consisting of policies, education, and marketing will likely be needed to address the risk of suicide conferred by gun access. 相似文献
62.
63.
The Application of Flow Cytometry as a Rapid and Sensitive Screening Method to Detect Contamination of Vitreous Humor Samples and Avoid Miscalculation of the Postmortem Interval 下载免费PDF全文
Cristina Cordeiro M.Sc. Rafael Seoane Ph.D. Ana Camba M.Sc. Elena Lendoiro M.Sc. María S. Rodríguez‐Calvo Ph.D. Duarte N. Vieira Ph.D. José I. Muñoz‐Barús Ph.D. 《Journal of forensic sciences》2015,60(5):1346-1349
Research into maximizing the speed, precision, and reliability of estimating the postmortem interval (PMI) has been a recurring object of investigation and methodologies based on the vitreous humor (VH) have provided good results. However, contamination from causes not readily apparent, such as blood, can occur, and thus lead not only to an erroneous estimation of PMI, but also interfere with the correct identification of other substances in the VH. We have developed a flow cytometry method which quantifies blood contamination and is able to detect erythrocytes in 1:750,000 dilution of contaminated VH which affects the results of hypoxanthine. It is an improvement on the previous more complex mass spectrometry method, being faster, more sensitive, and readily available. As such, it could be proposed for the rapid screening of appropriate samples by detecting and eliminating blood contaminated samples from PMI estimation. 相似文献
64.
65.
Dominik Hangartner André Bächtiger Rita Grünenfelder Marco R. Steenbergen 《Swiss Political Science Review》2007,13(4):607-644
Two challenges stand out in the study of deliberation: the development of appropriate methodological tools and the development of more unified analytical frameworks. On the one hand, analysing deliberative processes is demanding and time‐consuming; hence we tend to have only few and non‐randomly selected cases at the group or context level. In addition, the real world of deliberation presents us with a complex matrix of nested, cross‐classified, and repeated speakers. This article shows that Bayesian multi‐level modelling provides an elegant way to tackle these methodological problems. On the other hand, we attempt to enrich comparative institutionalism with individual characteristics and psychologically relevant variables (such as group composition). Focusing on Swiss and German parliamentary debates we show that institutional factors ‐ in particular, consensus systems ‐, the gender composition of committees and plenary sessions, and age matter for the quality of deliberation. Furthermore, we also show that partisan affiliation ‐ government or opposition status of MPs ‐ affects deliberative quality and can refine institutional arguments. We conclude that a multi‐level approach to deliberation focusing on contextual and actor‐related characteristics and using Bayesian hierarchical modelling paves the way toward a more advanced understanding ‐ and methodological handling ‐ of deliberative processes. 相似文献
66.
67.
68.
69.
André Eschet-Schwarz 《Political Behavior》1989,11(3):255-272
Political participation in the process of semidirect democracy differs in several important respects from political participation in elections in representative democracies. This study discusses patterns of participation in 300 referenda at the cantonal and federal level in Switzerland during the 1879–1981 period. The purpose of this survey is to account for cross-temporal and cross-cantonal variations in terms of: (a) referenda type, (b) competition intensity, and (c) the influence of a multiple political culture. The findings suggest that distinctive political cultures and life styles, and other collective factors account for turn-out percentages and competition intensity. Voters tend to mobilize essentially to reject constitutional revisions and laws rather than accept them. The significance of cross-temporal differences was found to diminish during the 1952–1981 period. This tendency toward increasing standardization of Swiss political participation does not, however, completely blur the specificity of participation within cantons, suggesting that the multicultural nature of Swiss society is still prevalent. 相似文献
70.