全文获取类型
收费全文 | 2606篇 |
免费 | 41篇 |
专业分类
各国政治 | 126篇 |
工人农民 | 62篇 |
世界政治 | 152篇 |
外交国际关系 | 66篇 |
法律 | 1917篇 |
中国政治 | 21篇 |
政治理论 | 286篇 |
综合类 | 17篇 |
出版年
2020年 | 30篇 |
2019年 | 22篇 |
2018年 | 22篇 |
2017年 | 33篇 |
2016年 | 40篇 |
2015年 | 23篇 |
2014年 | 38篇 |
2013年 | 187篇 |
2012年 | 60篇 |
2011年 | 68篇 |
2010年 | 36篇 |
2009年 | 35篇 |
2008年 | 56篇 |
2007年 | 71篇 |
2006年 | 71篇 |
2005年 | 74篇 |
2004年 | 72篇 |
2003年 | 70篇 |
2002年 | 70篇 |
2001年 | 156篇 |
2000年 | 123篇 |
1999年 | 76篇 |
1998年 | 26篇 |
1995年 | 18篇 |
1994年 | 22篇 |
1993年 | 21篇 |
1992年 | 63篇 |
1991年 | 69篇 |
1990年 | 61篇 |
1989年 | 84篇 |
1988年 | 83篇 |
1987年 | 72篇 |
1986年 | 76篇 |
1985年 | 65篇 |
1984年 | 35篇 |
1983年 | 41篇 |
1982年 | 19篇 |
1981年 | 30篇 |
1979年 | 28篇 |
1978年 | 21篇 |
1977年 | 27篇 |
1976年 | 19篇 |
1975年 | 31篇 |
1974年 | 30篇 |
1973年 | 31篇 |
1972年 | 32篇 |
1971年 | 24篇 |
1970年 | 20篇 |
1969年 | 24篇 |
1968年 | 20篇 |
排序方式: 共有2647条查询结果,搜索用时 0 毫秒
971.
972.
The nexus with transnational organized crime is increasingly a focus for security planners in their analyses of terror groups.
Their approach is best described by the phrase “methods, not motives.” While the motives of terrorists and organized criminals
remain divergent most often, our research indicates this is not always the case. For that reason, this report argues that
such a general approach has become too restrictive and can be misleading since the interaction between terrorism and organized
crime is growing deeper and more complex all the time. In short, the lines of separation are no longer unequivocal.
The report analyzes the relationship between international organized crime and terrorism in a systematic way in order to highlight
the shortcomings of the “methods, not motives” argument. In so doing, the report considers the factors that most closely correspond
to crime-terror interaction and identifies those regions of developed and developing states most likely to foster such interactions.
Likewise, the paper will suggest an evolutionary spectrum of crime-terror interactions that serves as a common basis for discussion
of such often used terms as “nexus.”
The centerpiece of the report is a groundbreaking methodology for analysts and investigators to overcome this growing complexity,
identify crime-terror interactions more quickly and to assess their importance with confidence. The approach is derived from
a standard intelligence analytical framework, and has already proven its utility in law enforcement investigations.
The report is the product of a recently concluded and peer-reviewed 18-month NIJ sponsored research project, and includes
empirical evidence drawn from numerous case studies developed in the course of the research program.
This project was supported by Grant No. 2003-IJ-CX-1019 awarded by the National Institute of Justice, Office of Justice Programs,
U.S. Department of Justice. Points of view in this document are those of the authors and do not necessarily represent the
official position or policies of the US Department of Justice.
Research assistance on this project was provided by Allison Irby, Douglas M. Hart, Patricia A. Craig-Hart, Dr. Phil Williams,
Steven Simon, Nabi Abdullaev, and Bartosz Stanislawski. Drafting and editing help was provided by Laura Covill. 相似文献
973.
974.
975.
976.
The genetically determined polymorphism of alpha 2 HS-glycoprotein was analyzed by immunoblotting ultrathin-layer polyacrylamide gel isoelectric focusing in the pH range 4-6.5 and neuraminidase pretreated sera. In a Libyan population sample from Tripoli (n = 110) three common phenotypes, alpha 2 HSG 1-1, 2-1, and 2-2, were observed. The allele frequencies were alpha 2 HSG1 = 0.8364 and alpha 2 HSG2 = 0.1636. The theoretical exclusion rate in cases of disputed paternity is 11.8%. 相似文献
977.
Frederic I. Salop 《政策研究评论》1989,9(2):307-326
With the Comprehensive Anti-apartheid Act of 1986, Congress instituted economic sanctions against South Africa, thereby reversing the historic course of U. S. foreign policy. This political innovation constituted a great victory for minority interests. This article utilizes the agenda-setting literature to examine the relationship between Anti-apartheid movement activity in the United States and adoption of economic sanctions against South Africa. The analysis is based upon an events data set consisting of 1353 events appearing in the New York Times between 1960 and 1986, interviews with activists and legislators, and archived materials. The ar- ticle concludes that although the Anti-apartheid movement was only in- directly involved in moving sanctions legislation to the policy agenda, the movement exerted direct influence in the policy process once the legislation had agenda status. 相似文献
978.
The paper gives the results of tests for influence of luminol solution of different composition on detectability of haptoglobin fractions in the bloodstains of different ages. It was stated that alkaline luminol solutions reduce intensity of fractions and may hamper Hp phenotype determination especially in old stains. 相似文献
979.
980.