首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   11301篇
  免费   569篇
各国政治   454篇
工人农民   398篇
世界政治   858篇
外交国际关系   323篇
法律   7666篇
中国共产党   1篇
中国政治   69篇
政治理论   2054篇
综合类   47篇
  2021年   69篇
  2020年   206篇
  2019年   254篇
  2018年   255篇
  2017年   311篇
  2016年   327篇
  2015年   261篇
  2014年   284篇
  2013年   1046篇
  2012年   261篇
  2011年   325篇
  2010年   303篇
  2009年   317篇
  2008年   308篇
  2007年   270篇
  2006年   284篇
  2005年   266篇
  2004年   272篇
  2003年   260篇
  2002年   251篇
  2001年   531篇
  2000年   472篇
  1999年   345篇
  1998年   211篇
  1997年   149篇
  1996年   125篇
  1995年   123篇
  1994年   147篇
  1993年   138篇
  1992年   214篇
  1991年   231篇
  1990年   232篇
  1989年   230篇
  1988年   228篇
  1987年   208篇
  1986年   240篇
  1985年   215篇
  1984年   164篇
  1983年   177篇
  1982年   121篇
  1981年   125篇
  1980年   87篇
  1979年   139篇
  1978年   80篇
  1977年   74篇
  1976年   70篇
  1974年   73篇
  1973年   67篇
  1972年   66篇
  1970年   49篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
12.
In a case of first impression, the Trademark Trial and AppealBoard of the US Patent and Trademark Office has held that theflavour orange is not registrable for use with quick-dissolvingantidepressant tablets and pills.  相似文献   
13.
This paper links the policy context regarding S&T parks to the objectives and characteristics of the established parks and incubators in a relatively small, converging European country. S&T parks and incubators in Greece during the past decade and a half have gradually shifted in terms of ownership and management from university/research institute to the private sector and in terms of financing from public to private funds, also involving the provision of seed capital and access to venture capital. This gradual shift toward more private engagement has created a variety of models out of which, it is hoped, successful innovative companies will emerge in larger numbers than in the past.
  相似文献   
14.
Abstract. The paper replies to Bix and Soper ( Bix 2007 ; Soper 2007 ). Bix's paper raises methodological questions, especially whether a form‐theorist merely needs to reflect on form from the arm‐chair so to speak. A variety of methods is called for, including conceptual analysis, study of usage, “education in the obvious,” general reflection on the nature of specific functional legal units, empirical research on their operation and effects, and still more. Further methodological remarks are made in response to Soper's paper. Soper suggests the possibility of substituting “form v. substance” of a unit as the central contrast here rather than form v. complementary material or other components of a unit. Various reasons are given here for not doing this. Among other things, it is also argued here that form does not, contrary to Soper's suggestion, always follow substance.  相似文献   
15.
This article evaluates the effectiveness of OAS mechanisms for safeguarding democracy through multilateral diplomacy, what some scholars have dubbed the interamerican defense of democracy regime. Drawing on a range of international relations theories, this study derives competing hypotheses about member states' responses to democratic crises in the Americas. It then analyzes all instances in which a collective response—that is, an application of Resolution 1080 or the Inter-American Democratic Charter—was debated in the OAS between 1991 and 2002. Patterns of state behavior suggest that domestic politics, rather than the structural or systemic traits of the interamerican system, best explain foreign policy responses to crises of democracy in the region. The OAS record in confronting such crises is uneven.  相似文献   
16.
We use data from 1983 and 1985 on the volume of Medicare physician services to analyze whether Medicare's Prospective Payment System (PPS), which resulted in a significant decline in hospital spending, led to a partially offsetting increase in real expenditures for physician services. We also analyze the effect of increases in assignment rates, increasing incomes of the elderly, and other factors on real expenditures during this period. Our main conclusion is that PPS has at most a small positive effect on real physician expenditures. Because people spent less time in the hospital, Medicare physician spending declined; but because of incentives to shift radiology and other services out of the hospital, some of this decline was offset. We also conclude that the sharp increase in Medicare assignment rates over this period, along with the rising incomes of the elderly during this period, contributed to the observed growth.  相似文献   
17.
18.
Correlation between plasma and bone marrow tricyclic antidepressants has not been studied before. Two groups of rabbits were given 10 and 20 mg of desipramine/kg body weight, respectively. Desipramine was administered to the animals once daily by mouth for 5 days. On the fifth day the animals were sacrificed and blood and bone marrow samples were collected and analyzed using a high performance liquid chromatographic (HPLC) method. Data showed that a correlation exists between bone marrow and blood desipramine. The bone marrow desipramine concentration increased as its blood levels increased. The average ratio of bone marrow to blood desipramine +/- S.D. (standard deviation) in both dosage groups was 37.2 +/- 4.46 with a range of 30.99-44.82. This investigation is promising and shows that bone marrow could be used as an alternative tissue in the absence of a suitable blood sample.  相似文献   
19.
This article examines voluntary mediation and provides suggested criteria for attorneys in deciding whether or not to use mediation. The author discusses what mediation has to offer, what it takes to make it work, and important cautions for attorneys in deciding about the use of this process.  相似文献   
20.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号