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   76991篇
  免费   3297篇
各国政治   4583篇
工人农民   3115篇
世界政治   6562篇
外交国际关系   3940篇
法律   38984篇
中国共产党   12篇
中国政治   770篇
政治理论   21374篇
综合类   948篇
  2021年   424篇
  2020年   1194篇
  2019年   1542篇
  2018年   1805篇
  2017年   2107篇
  2016年   2296篇
  2015年   1863篇
  2014年   2127篇
  2013年   10648篇
  2012年   1872篇
  2011年   2007篇
  2010年   1970篇
  2009年   2170篇
  2008年   2017篇
  2007年   2028篇
  2006年   2160篇
  2005年   2035篇
  2004年   1919篇
  2003年   1720篇
  2002年   1754篇
  2001年   2187篇
  2000年   1911篇
  1999年   1625篇
  1998年   1239篇
  1997年   1070篇
  1996年   1047篇
  1995年   1010篇
  1994年   1049篇
  1993年   1045篇
  1992年   1192篇
  1991年   1224篇
  1990年   1168篇
  1989年   1200篇
  1988年   1185篇
  1987年   1184篇
  1986年   1224篇
  1985年   1242篇
  1984年   1107篇
  1983年   1117篇
  1982年   974篇
  1981年   926篇
  1980年   738篇
  1979年   837篇
  1978年   647篇
  1977年   588篇
  1976年   540篇
  1975年   482篇
  1974年   493篇
  1973年   483篇
  1972年   426篇
排序方式: 共有10000条查询结果,搜索用时 703 毫秒
61.
62.
Technology transfer has generally had little impact on the assistive technology industries serving small, highly fragmented “disability markets.” Persons with disabilities often require specialized, relatively sophisticated technology. Third-party payer reimbursement rates and the low levels of disposable income among disability populations often cap product pricing. Transferring technology to these industry segments therefore poses special challenges. In October 1998, the Rehabilitation Engineering Research Center on Technology Transfer initiated the “Demand-Pull Project on Wheeled Mobility.” Successful transfers resulting from this project demonstrate that a systematic technology transfer process can be successfully applied to industries serving specialized and underserved niche markets.  相似文献   
63.
The EU has regulated chemicals since the late 1960s using both general and sectoral legislation, and exposure-based, hazard-based and risk-based decisions. A new proposal from the European Commission – on the Registration, Evaluation and Authorization of Chemicals (REACH) – will build on the experiences of the existing legislation and introduce some new concepts in the management of chemicals. This article is aimed at assessing the current chemical control mechanisms in the EU and those put forward in REACH to demonstrate how REACH is a new paradigm in chemicals management. REACH will carry forward today's experience and approach to the management of chemicals in the EU and introduces some novel aspects, such as utilizing market-based mechanisms and putting into operation the 'substitution principle'.  相似文献   
64.
65.
66.
In 1970, the Congress enacted the Organized Crime Control Act. Title IX of the 1970 Act is the Racketeer Influence and Corrupt Organization Act or RICO. This Act had its origins in legislation going back as far as 1934, but coming forward to 1961. The 1970 Act borrowed ideas from this earlier legislation, principally “enterprise,” but also the use predicate statutes to define “racketeering activity.” The ideas are not new, but their combination affects how prosecutors and law enforcement agents investigate, try, and sanction violations of the Act. RICO’s drafting also reflects organizational theory and economic analysis. The investigation and prosecution of a single crime committed by an individual on a single day and in a single place maybe done using one set of procedural and evidentiary rules. Nevertheless, the investigation and prosecution of patterns of diverse offenses committed by, through, and against licit and illicit enterprises require sophisticated procedures, evidentiary rules, and criminal sanctions. In addition, antisocial conduct is more than a challenge to the administration of criminal justice; it also requires the full panoply of civil sanctions, including public injunctions as well private enforcement of injunctive relief and treble damages. RICO has had a profound effect on the prosecution of organized crime, white-collar crime, and other forms of similar criminal behavior. William J. & Dorothy K. O’Neill Professor of Law, Notre Dame Law School; A.B. 1957, University of Notre Dame; J.D. 1960, Notre Dame Law School. Professor Blakey was the Chief Counsel of the Subcommittee on Criminal Laws and Procedures of the United States Senate Committee on the Judiciary in 1969-70 when the Organized Crime Control Act of 1970, Pub. L. No. 91-542, 84 Stat. 922 (1970) was processed, Title IX of which is the Racketeer Influence and Corrupt Organization Act or RICO. For a general treatment of the statute from a variety of perceptive, see the collection of law review literature in G. Robert Blakey & Kevin Roddy, “Reflections on Reves v. Ernst & Young: Its Meaning an Impact on Substantive, Accessory, Aiding, Abetting and Conspiracy Liability under RICO,” 33 Amer. Crim. L. Rev. 1345, 1348 n. 3(1996).  相似文献   
67.
68.
69.
70.
The present study measured the existence of traumatic stress symptomatology as reported by certified law enforcement officers within the State of Delaware. A questionnaire was devised which documented age, sex, race, education, years of service, marital status, children, rank, position, and shift work. The questionnaire was divided into parts which assessed the exposure and the frequency of specific traumatic incidents experienced in the line of duty, and the frequency of experienced traumatic symptomatology criteria: re-experiencing, numbing, and arousal.  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