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   11773篇
  免费   586篇
各国政治   439篇
工人农民   488篇
世界政治   819篇
外交国际关系   325篇
法律   8102篇
中国共产党   1篇
中国政治   62篇
政治理论   2079篇
综合类   44篇
  2021年   65篇
  2020年   193篇
  2019年   232篇
  2018年   310篇
  2017年   305篇
  2016年   382篇
  2015年   265篇
  2014年   274篇
  2013年   999篇
  2012年   355篇
  2011年   382篇
  2010年   294篇
  2009年   320篇
  2008年   293篇
  2007年   267篇
  2006年   287篇
  2005年   616篇
  2004年   343篇
  2003年   253篇
  2002年   247篇
  2001年   474篇
  2000年   419篇
  1999年   300篇
  1998年   182篇
  1997年   149篇
  1996年   126篇
  1995年   118篇
  1994年   144篇
  1993年   131篇
  1992年   209篇
  1991年   234篇
  1990年   226篇
  1989年   245篇
  1988年   227篇
  1987年   216篇
  1986年   253篇
  1985年   223篇
  1984年   172篇
  1983年   183篇
  1982年   114篇
  1981年   121篇
  1980年   86篇
  1979年   137篇
  1978年   80篇
  1977年   78篇
  1976年   69篇
  1974年   95篇
  1973年   78篇
  1972年   80篇
  1971年   62篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
This paper compares the Medicare prospective payment system (PPS) to four all-payer rate-setting systems that operated under HCFA waiver authority. The study examines the experience of Medicare, Medicaid, and commercial insurers under the two approaches. Data from several American Hospital Association surveys and from Medicaid 2082 report forms are analyzed. The paper concludes that the all-payer waiver programs have been as successful as PPS in controlling the rate of growth in Medicare costs. In addition, Medicaid programs are more successful in controlling their outlays in all-payer rate-setting environments than when they "go alone." Finally, there is no evidence to suggest that hospitals can increase charges in response to greater financial need under either PPS or the state waivers. Nevertheless, it appears that commercial insurers are better able to compete with Blue Cross plans in all-payer rate-setting states than elsewhere.  相似文献   
92.
Assessment of competency for execution presents two compelling ethical questions for mental health professionals: whether clinicians can ethically provide such assessment, and if so, how it should be done in order to maximize quality and minimize ethical conflict. In this article we address the issue of whether to participate and, if so, how. The question of whether to participate is discussed by summarizing the arguments for and against participation and offering guidelines for making a decision. The question of how to proceed is discussed in two contexts: preadjudication (before a formal decision about competency) and postadjudication (following a determination of "incompetent" and transfer of the offender to another facility for treatment and further assessment). Finally, recommendations are made regarding research that would improve the quality of execution competency assessments.  相似文献   
93.
94.
Weissert  Carol S. 《Publius》1992,22(3):93-109
Rapidly escalating health-care inflation and congressionallymandated expansions have led to large increases in spendingfor Medicaid, the federal-state program of health care for thepoor. These increases came at a time when state budgets werealready under recession-induced stresses. In addition, 1991brought new pressures for Medicaid spending from the courtsand closer federal scrutiny and control over revenues used forthe program's state "match." Yet the Medicaid picture is farfrom bleak. Diversity, innovation, and an emerging stale policyrole also characterize the program in ways that epitomize thestrengths and weaknesses of the American intergovernmental system.  相似文献   
95.
96.
97.
98.
99.
100.
Danger: implants     
The superheated debate over breast implants awakened a sleeping giant of an issue clouding "medical devices"--the government's clumsy nomenclature for any medical product that is not a drug, from breast implants and artificial hips to X-ray machines and surgical thread. Some 130 categories of high-risk devices are in use with little or no proof of safety, reliability or effectiveness. All appeared before 1976, the year that the Food and Drug Administration got the authority to regulate such products. Under activist chief David Kessler and with added clout from a 1990 law, the FDA plans to scrutinize the entire 130-item list. Five will get special attention starting early next year: saline-filled breast implants, inflatable penile implants, testicular implants, heart-bypass pumps and cranial stimulators. U.S. News has looked at all five devices, using FDA data obtained through the Freedom of Information Act. In-depth computer analysis suggested that penile implants deserve closer examination. Why is clear from the following report.  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