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   20625篇
  免费   1227篇
各国政治   659篇
工人农民   1435篇
世界政治   1133篇
外交国际关系   635篇
法律   13898篇
中国共产党   1篇
中国政治   87篇
政治理论   3927篇
综合类   77篇
  2020年   359篇
  2019年   366篇
  2018年   1652篇
  2017年   1646篇
  2016年   1505篇
  2015年   507篇
  2014年   457篇
  2013年   1336篇
  2012年   466篇
  2011年   1273篇
  2010年   1509篇
  2009年   1066篇
  2008年   1010篇
  2007年   968篇
  2006年   390篇
  2005年   327篇
  2004年   423篇
  2003年   397篇
  2002年   261篇
  2001年   468篇
  2000年   367篇
  1999年   306篇
  1998年   168篇
  1997年   158篇
  1996年   139篇
  1995年   171篇
  1994年   180篇
  1993年   131篇
  1992年   228篇
  1991年   250篇
  1990年   226篇
  1989年   241篇
  1988年   223篇
  1987年   185篇
  1986年   220篇
  1985年   236篇
  1984年   246篇
  1983年   196篇
  1982年   158篇
  1981年   138篇
  1980年   133篇
  1979年   160篇
  1978年   103篇
  1977年   94篇
  1976年   70篇
  1975年   75篇
  1974年   81篇
  1973年   66篇
  1972年   55篇
  1971年   57篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
Fatal fall from a height initiated with a swinging motion on the sagittal plane of the victim's body is examined. Method of analytical mechanics is adopted to establish the functional relations between the swinging angle of the body and the force needed to sustain the body until release, and the amount of the horizontal displacement that would occur after release. The analysis is applied to support an expert opinion presented in a criminal court in which two accused were convicted of murder for dropping a female victim from a bridge. The results indicate that it is unlikely for the body to locate as recorded by the police investigation report in the case. This study demonstrates that a straightforward mechanical analysis can be utilized to examine uncommon falling scenarios.  相似文献   
2.
3.
This article presents the findings of the first research study of the Institutional Hearing Program (IHP), a prison-based immigration court system run by the U.S. Department of Justice. Although the IHP has existed for four decades, little is publicly known about the program's origin, development, or significance. Based on original analysis of archival records, this study makes three central contributions. First, it traces the origin and growth of the IHP within federal, state, and municipal correctional facilities. Notably, although the IHP began in 1980 as a program to deport Cuban asylum seekers held in civil detention in an Atlanta prison, it now operates to deport noncitizens serving prison sentences in twenty-three federal prisons, nineteen state prison systems, and a few municipal jails. Second, this article uncovers the crucial role that prison-based immigration courts have played in shaping the design of carceral institutions around the priorities of an immigration system that primarily targets Latinos for deportation. Third, this article shows how immigration courts embedded in carceral spaces have served as influential, yet overlooked, incubators of changes to immigration law and practice that today apply to all immigration courts, not just the IHP. These findings have important implications for contemporary understandings of the relationship between immigration detention, racialized control of migration, and penal punishment.  相似文献   
4.
In 1991 the FCC implemented a price cap plan for local exchange carriers' interstate access service designed to deal with the regulatory boundaries problem arising from the breakup of AT&T in 1984. The experience with the price cap plan demonstrates the difficulty of predicting productivity growth accurately and makes clear that regulators cannot depend upon a pure price cap plan to keep prices within a reasonable range of costs. With periodic reviews to readjust plan parameters, however, a price cap plan can maintain the rate-of-return close to the target rate-of-return without diminishing the price cap plan's incentives for efficient production. A simple method of recalculating the X-factor based on the rate-of-return over the previous three years worked well in simulations. If this procedure had been used over the price cap period 1991 to 2000, prices would have been 20 percent lower and expenditures on LECs' telecommunications service subject to a price cap would have been $3.8 billion lower.  相似文献   
5.
6.
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   
7.
8.
This article explores the influence that state finance has had on the Romanian party system by examining the entry and exit of parties throughout the period of 1990 – 2004 and focusing on the number of parties that gained representation in the parliament as well as the party incumbency rate. I find that state finance has had a limited influence on the party system as a whole but has been influential for specific parties. I argue that the influence of state finance partly depends on when the system was introduced. In developing party systems, the influence of state finance on individual parties is more differential.  相似文献   
9.
After the Agreement on the Trade-Related Aspects of Intellectual Property Rights (TRIPS) came into operation in 1995 developing countries have found themselves in a process of continual negotiation over intellectual property rights and access to medicines. These negotiations have taken place in the World Trade Organization and in the context of free trade agreements. The paper suggests that the only real win for developing countries has been the Doha Declaration on the TRIPS Agreement and Public Health in 2001. What have been the lessons for developing countries in a decade of negotiations over access to medicines? Drawing on themes of rule complexity and regulatory ritualism the paper discusses four key lessons for developing countries. It concludes by arguing that developing countries will do better if they adopt a networked governance approach to negotiation rather than continuing to rely on traditional coalition formation.  相似文献   
10.
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