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   12239篇
  免费   627篇
各国政治   662篇
工人农民   384篇
世界政治   890篇
外交国际关系   388篇
法律   8181篇
中国共产党   8篇
中国政治   64篇
政治理论   2241篇
综合类   48篇
  2021年   81篇
  2020年   230篇
  2019年   272篇
  2018年   336篇
  2017年   380篇
  2016年   406篇
  2015年   333篇
  2014年   320篇
  2013年   1144篇
  2012年   300篇
  2011年   363篇
  2010年   346篇
  2009年   379篇
  2008年   389篇
  2007年   388篇
  2006年   408篇
  2005年   312篇
  2004年   308篇
  2003年   282篇
  2002年   302篇
  2001年   502篇
  2000年   458篇
  1999年   312篇
  1998年   194篇
  1997年   156篇
  1996年   131篇
  1995年   121篇
  1994年   153篇
  1993年   132篇
  1992年   203篇
  1991年   226篇
  1990年   209篇
  1989年   222篇
  1988年   212篇
  1987年   199篇
  1986年   239篇
  1985年   216篇
  1984年   163篇
  1983年   177篇
  1982年   115篇
  1981年   130篇
  1980年   86篇
  1979年   139篇
  1978年   77篇
  1977年   75篇
  1976年   69篇
  1974年   75篇
  1973年   69篇
  1972年   67篇
  1970年   47篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
The DNA commission of the International Society of Forensic Genetics (ISFG) was convened at the 21st congress of the International Society for Forensic Genetics held between 13 and 17 September in the Azores, Portugal. The purpose of the group was to agree on guidelines to encourage best practice that can be universally applied to assist with mixture interpretation. In addition the commission was tasked to provide guidance on low copy number (LCN) reporting. Our discussions have highlighted a significant need for continuing education and research into this area. We have attempted to present a consensus from experts but to be practical we do not claim to have conveyed a clear vision in every respect in this difficult subject. For this reason, we propose to allow a period of time for feedback and reflection by the scientific community. Then the DNA commission will meet again to consider further recommendations.  相似文献   
32.
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   
33.
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   
34.
35.
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   
36.
37.
38.
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   
39.
40.
Although there has been speculation regarding the pervasiveness and nature of judicial decisions regarding life-sustaining medical treatment (LSMT), no attempt has been made to empirically assess their prevalence or the issues they address. An exploratory study utilizing a mail survey of a nationwide random sample (N = 905) of state trial court judges was conducted to provide initial information regarding this decision-making process. Twenty-two percent of the responding judges had heard at least one LSMT case, and judicial review did not appear endemic to particular states. The number of judges hearing LSMT cases dropped from 1975 to 1981 but has increased since then. Three major issues predominate: patient competency, appointment of a surrogate decisionmaker, and resolution of the ultimate issue of forgoing LSMT. Relatively few cases either contested a prior directive's validity or involved imposing sanctions for instituting or forgoing LSMT. Although subject to different interpretations, the results suggest the courts are having a significant impact on certain aspects of the LSMT decision-making process. However, the infrequency with which any one judge is called upon to make an LSMT decision causes concern about the judiciary's ability to respond in a timely and appropriate manner. With their potential for a profound effect on the actions of health care providers, greater attention to this decision-making process is warranted.  相似文献   
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