全文获取类型
收费全文 | 557篇 |
免费 | 20篇 |
专业分类
各国政治 | 35篇 |
工人农民 | 37篇 |
世界政治 | 64篇 |
外交国际关系 | 14篇 |
法律 | 230篇 |
中国政治 | 16篇 |
政治理论 | 178篇 |
综合类 | 3篇 |
出版年
2021年 | 5篇 |
2020年 | 5篇 |
2019年 | 13篇 |
2018年 | 9篇 |
2017年 | 13篇 |
2016年 | 14篇 |
2015年 | 9篇 |
2014年 | 17篇 |
2013年 | 100篇 |
2012年 | 14篇 |
2011年 | 20篇 |
2010年 | 10篇 |
2009年 | 8篇 |
2008年 | 17篇 |
2007年 | 15篇 |
2006年 | 24篇 |
2005年 | 19篇 |
2004年 | 17篇 |
2003年 | 15篇 |
2002年 | 14篇 |
2001年 | 15篇 |
2000年 | 14篇 |
1999年 | 12篇 |
1998年 | 7篇 |
1997年 | 11篇 |
1996年 | 10篇 |
1995年 | 9篇 |
1994年 | 9篇 |
1993年 | 12篇 |
1991年 | 4篇 |
1990年 | 3篇 |
1989年 | 4篇 |
1988年 | 5篇 |
1987年 | 5篇 |
1986年 | 11篇 |
1985年 | 7篇 |
1984年 | 11篇 |
1983年 | 4篇 |
1982年 | 7篇 |
1981年 | 5篇 |
1979年 | 10篇 |
1978年 | 4篇 |
1977年 | 3篇 |
1976年 | 5篇 |
1975年 | 3篇 |
1971年 | 3篇 |
1969年 | 3篇 |
1968年 | 4篇 |
1967年 | 5篇 |
1943年 | 2篇 |
排序方式: 共有577条查询结果,搜索用时 15 毫秒
131.
In contrast to the findings of other studies, we conclude that human rights play a significant and substantive role in determining the distribution of U.S. foreign aid. We find that the foreign aid program relates aid to the need of recipient nations, rewards nations for furthering human rights, does not discriminate on the basis of race or religion, and responds to national security interests of the U.S. The finding that the program does what most people assert it should do provides a new explanation for the rigidity of distributions over time. 相似文献
132.
133.
Tiffany R. Layne M.S. Raquel A. Green B.S. Carolyn A. Lewis B.S. Francy Nogales B.S. Tracey C. Dawson Cruz Ph.D. Zendra E. Zehner Ph.D. Sarah J. Seashols‐Williams Ph.D. 《Journal of forensic sciences》2019,64(6):1831-1837
Evaluation of microRNA (miRNA) expression as a potential method for forensic body fluid identification has been the subject of investigation over the past several years. Because of their size and encapsulation within proteins and lipids, miRNAs are inherently less susceptible to degradation than other RNAs. In this work, blood, urine, semen, and saliva were exposed to environmental and chemical conditions mimicking sample compromise at the crime scene. For many treated samples, including 100% of blood samples, miRNAs remained detectable, comparable to the untreated control. Sample degradation varied by body fluid and treatment, with blood remarkably resistant, while semen and saliva are more susceptible to environmental insult. Body fluid identification using relative miRNA expression of blood and semen of the exposed samples was 100% and 94%, respectively. Given the overall robust results herein, the case is strengthened for the use of miRNAs as a molecular method for body fluid identification. 相似文献
134.
135.
136.
137.
138.
When General Creighton Abrams took command of U.S. forces in Vietnam a better war resulted from his superior understanding of the war and more effective conduct of it, including improvement of South Vietnam's armed forces and emphasis on pacification. As American forces were progressively withdrawn, the South Vietnamese took on more and more of the load, winning the counterinsurgency war and fighting valiantly and effectively against the enemy's conventional invasion until the United States Congress drastically reduced materiel and financial assistance at the same time communist forces received massively increased support from their patrons. Thus, inevitably, South Vietnam succumbed. 相似文献
139.
Jenny Lewis 《Australian Journal of Public Administration》2000,59(1):60-71
This paper presents a case study of policy introduction, implementation and termination. It demonstrates how the coupling of a well-defined problem with a workable solution by advocates can generate policy change, even in an area where there has previously been scant governmental interest. It also reveals that increased public funding associated with policy implementation can provide administrators with the legitimacy and authority to advance reform. Finally, this case study indicates the fragility of policies which: have short histories of governmental attention and financing; cross major party political differences towards federalism and Commonwealth/state responsibilities; and solely benefit repressed interests. 相似文献
140.