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   5982篇
  免费   128篇
各国政治   245篇
工人农民   256篇
世界政治   485篇
外交国际关系   212篇
法律   3709篇
中国政治   50篇
政治理论   1136篇
综合类   17篇
  2021年   44篇
  2020年   74篇
  2019年   111篇
  2018年   139篇
  2017年   123篇
  2016年   125篇
  2015年   72篇
  2014年   124篇
  2013年   618篇
  2012年   145篇
  2011年   155篇
  2010年   125篇
  2009年   147篇
  2008年   171篇
  2007年   160篇
  2006年   149篇
  2005年   133篇
  2004年   163篇
  2003年   133篇
  2002年   110篇
  2001年   320篇
  2000年   279篇
  1999年   201篇
  1998年   81篇
  1997年   81篇
  1996年   54篇
  1995年   57篇
  1994年   50篇
  1993年   40篇
  1992年   124篇
  1991年   143篇
  1990年   136篇
  1989年   130篇
  1988年   116篇
  1987年   128篇
  1986年   106篇
  1985年   95篇
  1984年   101篇
  1983年   88篇
  1982年   62篇
  1981年   76篇
  1980年   37篇
  1979年   77篇
  1978年   43篇
  1975年   41篇
  1974年   49篇
  1973年   54篇
  1972年   41篇
  1971年   35篇
  1970年   30篇
排序方式: 共有6110条查询结果,搜索用时 15 毫秒
51.
Henrard  K. 《荷兰国际法评论》2005,52(1):159-163
Netherlands International Law Review -  相似文献   
52.
A 6-month-old girl died suddenly without any previous symptoms of heart failure. Autopsy examination showed cardiomegaly (97 g) with a severely fibrotized myocardium. The left coronary artery was originating from the pulmonary artery. Histologically, the myocardium showed myocardial infarcts of different ages, as well as grossly thickened arterial branches due to increased flow in left-right shunt. We suggest that rare anomalies of the coronary arteries should be considered in the autopsies of suspected sudden infant death syndrome cases.  相似文献   
53.
Many attempts have been made over the last several decades to improve communication among law enforcement agencies. This article is a case study of a “low-level” data sharing project in Florida that could serve as a national model. The Florida Law Enforcement Data Sharing Consortium is a partnership between the University of Central Florida and more than one hundred law enforcement agencies. It offers an inexpensive, yet technically advanced alternative to the proprietary data sharing model. Its distributed architecture was endorsed by the Markle Foundation, the 9/11 Commission, and the 2004 National Security Act. Civil liberties concerns raised by this and other types of data sharing projects are discussed.  相似文献   
54.
U.S. Supreme Court Justice Thurgood Marshall offered his opinion regarding the utility of public opinion polls as a tool for assessing the “evolving standards of decency” regarding capital punishment. His arguments became known as the Marshall hypotheses and spawned a considerable body of empirical testing. The three Marshall hypotheses are: (1) support for capital punishment is inversely associated with knowledge about it, (2) exposure to information about capital punishment produces sentiments in opposition to capital punishment, but (3) exposure to information about capital punishment will have no impact on those who support it for retributive reasons. The results of previous tests of these hypotheses were somewhat mixed but supportive. None of these studies, however, examined the effects of change in knowledge levels with changes, if any, in death penalty attitudes and beliefs as needed for a more complete test of the Marshall hypotheses. The present study addressed this shortcoming. The results provided mixed support for these three hypotheses. That is, death penalty supporters were somewhat less informed than death penalty opponents; exposure to death penalty information and knowledge gains tended to be associated with attitudinal change in a directions suggested by these hypotheses; but, retributivists' attitudes toward and beliefs about capital punishment were not any more resistant to change than were the attitudes and beliefs of non-retributivists.  相似文献   
55.
56.
Using merged administrative data from welfare reform evaluations in three states, we estimate the effects of child care subsidy use on the length of time it takes for a welfare applicant to move into substantial employment. Findings show that the use of a child care subsidy during an unemployed or marginally employed spell of welfare receipt is associated with between a 0.6 and 1.7 quarter (or 11% to 34%) reduction in the time to substantial employment in two of the three state samples. The positive influence of subsidy use on transitions to substantial employment is strongest for those welfare applicants with the lowest earnings who are mixing welfare and work prior to subsidy receipt.  相似文献   
57.
58.
59.
60.
A 1990 report prepared by the Office of Inspector General estimated that as much as $1 billion is lost to the Medicare program annually because (i) secondary payor situations are not detected and (ii) insurance companies often do not pay when they are required to be the primary payors. Office of Inspector General, No. A-09-98-00151, April 1990, Medicare and Medicaid Guide (CCH) [symbol: see text] 39,112, at 25,649. In order to better enforce the MSP provisions, suggestions have been made at the Congressional level to impose sanctions against providers who demonstrate a pattern of inappropriate billing practices such as double billing, repeated failures to screen beneficiaries for other insurance coverage, and the repeated submission to Medicare of bills that should be submitted to another payor. (See the Subcommittee Report on erroneous payments under the MSP program, supra.) Although authority for such sanctions has yet to be adopted, given the fiscal problems currently plaguing the federal government, providers can expect increased enforcement of the MSP provisions as a means of reducing Medicare costs, and should review their screening and billing practices accordingly.  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