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   10869篇
  免费   315篇
各国政治   402篇
工人农民   391篇
世界政治   726篇
外交国际关系   307篇
法律   6863篇
中国共产党   1篇
中国政治   71篇
政治理论   2331篇
综合类   92篇
  2020年   107篇
  2019年   171篇
  2018年   205篇
  2017年   228篇
  2016年   231篇
  2015年   169篇
  2014年   202篇
  2013年   986篇
  2012年   228篇
  2011年   276篇
  2010年   226篇
  2009年   278篇
  2008年   284篇
  2007年   282篇
  2006年   269篇
  2005年   252篇
  2004年   238篇
  2003年   249篇
  2002年   250篇
  2001年   425篇
  2000年   369篇
  1999年   301篇
  1998年   160篇
  1997年   125篇
  1996年   140篇
  1995年   133篇
  1994年   141篇
  1993年   136篇
  1992年   236篇
  1991年   252篇
  1990年   240篇
  1989年   248篇
  1988年   228篇
  1987年   229篇
  1986年   264篇
  1985年   257篇
  1984年   230篇
  1983年   215篇
  1982年   151篇
  1981年   128篇
  1980年   114篇
  1979年   151篇
  1978年   85篇
  1977年   112篇
  1976年   96篇
  1975年   72篇
  1974年   89篇
  1973年   83篇
  1972年   78篇
  1971年   69篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
191.
Hospitals tempted to operate their own physician incentive plans are reminded that, under OBRA 1986, they are precluded from paying physician incentives of any kind to reduce or limit Medicare or Medicaid covered services. In light of the proposed regulations and the guidance of the preamble, hospitals should review their incentive plans to determine whether physicians providing direct patient care are receiving prohibited payments. Further, supervising physicians who are receiving incentives for certain hospital departments may not influence direct care over patients served by those departments, even through other physicians. Some risk may also exist if incentives are based on a formula that considers patients of the supervising physician's medical group. Finally, it may be useful to develop a utilization and quality of care review program specifically designed to assure that patient undertreatment does not occur as a result of any supervising physician incentive program.  相似文献   
192.
While the regulations are revolutionary in their use of "substantial compliance," the interpretation and application of HCFA's new remedial scheme are still uncertain, as states are given broad discretion in defining important terms and in applying and interpreting the criteria to select remedies. Further complicating the issue is the fact that some states, including California, intend to seek waivers from HCFA to substitute their own state enforcement systems for most, if not all, of the new federal system. Based upon these uncertainties, the enforcement of nursing facility standards will likely be in a state of flux for some time to come.  相似文献   
193.
In the West economically motivated crime is usually perceived as a matter for the police while the performance of the economy is a matter for the political authorities. This paper argues that the growth and evolution of the modern underground economy has made such a distinction obsolete. Not only have the frontiers between the legitimate and the criminal sectors of the economy blurred, but the distinction between the explicitly criminal and the merely informal aspects of the modern underground economy has become largely meaningless. Given the tremendous growth of underground activity, this means that the issue must now be addressed not just on the enterprise level, as a police matter, but on the level of the economy as a whole, by economic policy makers. This in fact is something that many developing countries long ago realized. The paper therefore asks whether developing countries have been any more successful in using monetary, fiscal and balance of payments policy to mitigate the adverse social and economic impact of widespread underground economic activity than have Western countries who have relied mainly on the sanction of criminal law. It concludes that both approaches are deficient in so far as they neglect the degree to which modern underground activity can no longer be seen as a manifestation of deviant economic behavior so much as a virtual economic insurgency against the status quo distribution of income and wealth and the codes of economic behavior which accompany it. However dramatic are the financial manifestations of the spread of enterprise crime, ultimately the challenge it poses must be addressed as the political and ideological level.  相似文献   
194.
195.
"Social and economic indicators depict Mexico as a country of intermediate development. It is also in intermediate stages of demographic and epidemiologic transitions. When these traits are translated into socio-demographic perspectives, all projections indicate that for the next fifty years we can expect: (i) percentage decreases in child and teen-age populations, (ii) large percentage and absolute increases in adult population, and (iii) important increases in the elderly population.... Among elders death due to infectious diseases is less common than within other sectors of [the] population. Mortality associated with chronic ailments has increased, with recent and remarkable changes during the last twenty years. This transformation is not evenly distributed. It is more accelerated in developed and urban areas as contrasted with the rural and less developed." (SUMMARY IN ENG)  相似文献   
196.
"Tijuana has been the most extraordinary example of the modern demographic history of the [Mexican] northern border. This article is an essay on the economic, social, and demographic development of this important urban center during this century. Its purpose is two fold. On the one hand, to understand Tijuana's general population change in light of a unique socioeconomic development in the country, which has been characterized by a close dependence on the United States as well as by the creation of several federal programs aimed [at integrating] the natural economies. On the other hand, to introduce the discussion of the Mexico-United States border region to the non-specialist in this field." (SUMMARY IN ENG)  相似文献   
197.
198.
199.
Tort reform is controversial because of the need to balance cost considerations with the legitimate needs of plaintiffs who have suffered malpractice injury. In addition, proponents and opponents of the different proposals often formulate their positions based largely on anecdotal evidence and concerns of special interest groups rather than careful studies. As a result, it may be some time before malpractice reform is addressed comprehensively at the federal level, leaving the states to their own reform devices.  相似文献   
200.
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