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   9307篇
  免费   222篇
  国内免费   2篇
管理学   1479篇
民族学   32篇
人口学   785篇
丛书文集   27篇
理论方法论   871篇
综合类   106篇
社会学   4698篇
统计学   1533篇
  2020年   120篇
  2019年   169篇
  2018年   183篇
  2017年   223篇
  2016年   192篇
  2015年   149篇
  2014年   213篇
  2013年   1565篇
  2012年   239篇
  2011年   251篇
  2010年   204篇
  2009年   186篇
  2008年   238篇
  2007年   230篇
  2006年   241篇
  2005年   230篇
  2004年   198篇
  2003年   169篇
  2002年   186篇
  2001年   194篇
  2000年   205篇
  1999年   174篇
  1998年   167篇
  1997年   149篇
  1996年   141篇
  1995年   152篇
  1994年   163篇
  1993年   139篇
  1992年   152篇
  1991年   172篇
  1990年   185篇
  1989年   149篇
  1988年   180篇
  1987年   149篇
  1986年   147篇
  1985年   146篇
  1984年   159篇
  1983年   146篇
  1982年   107篇
  1981年   101篇
  1980年   102篇
  1979年   126篇
  1978年   100篇
  1977年   73篇
  1976年   88篇
  1975年   61篇
  1974年   82篇
  1973年   54篇
  1971年   45篇
  1970年   45篇
排序方式: 共有9531条查询结果,搜索用时 442 毫秒
121.
The term "investigational" has become the fulcrum upon which coverage decisions turn. All third-party payers, including the federal government, use varying definitions of the term for the purpose of excluding treatments from coverage for payment. Unfortunately, no consistent definition of the term is available to payers to guide them in their coverage decisions.  相似文献   
122.
Coverage decisions by third-party payers are relying more and more heavily on the conclusions of technology assessment programs about the safety and effectiveness of technologies applied in specific clinical situations. Assessment programs vary markedly in the sophistication and rigor of their methodology. Payers differ as to how such assessment information is integrated into their decision-making processes. Finally, coverage decisions about a specific technology can vary widely across the country.  相似文献   
123.
The challenge of world health   总被引:1,自引:0,他引:1  
2 development specialists have expounded on the demands world health has placed on public health. Striking declines in infant and child mortality occurred with the advent of biomedical and technical interventions in developing countries after World War II. At the same time, these interventions promoted longer lives by curing and/or treating chronic diseases in developed countries. In the 1970s, however, it was apparent that the hospital based, curative approach could not meet health needs and was very costly. In developed countries, biomedical and social sciences showed that chronic diseases did not occur due to modernization but from unhealthy behaviors, diet, and lifestyle. In fact, in 1975, the US Centers for Disease Control announced that unhealthy lifestyles contributed to 50% of all deaths while the medical system was responsible for only 11%. The US and other developed countries then began to promote healthy lifestyles, and in the 1980s, considerable improvements in health occurred, especially among adults. Developing countries which depended on the Western medical model did not experience health gains in the 1970s. Yet developing countries where health systems concentrated on carrying essential services to all people and promoted basic hygiene and sound dietary practices continued to achieve considerable health gains. In 1978, WHO an UNICEF hosted the International Conference on Primary Health Care in Alma Ata, the Soviet Union to hold these developing countries with community based health systems as models of primary health care (PHC). The 1980s witnessed the spread of PHC especially in the form of child survival which focused on oral rehydration therapy and breast feeding. The biomedical and social sciences are needed to move this health policy and program strategy forward. Governments must see to policies that promote healthy people. Political will is needed to make human welfare a high priority.  相似文献   
124.
125.
Prior to the 1980s, managed care was virtually nonexistent as a force in health care. Presently, 64 percent of employees in America are covered by managed care plans, including health maintenance organizations (20 percent) and preferred provider organizations (44 percent). In contrast, only 29 percent of employees were enrolled in managed care plans in 1988 and only 47 percent in 1991. To date, the primary reason for this incredible growth in managed care has been economic-market pressure to reduce health care costs. For the foreseeable future, political pressures are likely to fuel this growth, as managed care is at the center of President Clinton's national health care plan. Although there are numerous legal issues surrounding managed care, this article focuses primarily on antitrust implications when forming managed care entities. In addition, the corporate practice of medicine doctrine, certain tax issues, and the fraud and abuse laws are discussed.  相似文献   
126.
127.
128.
In attempting to manage their practices efficiently, doctors may not allow seriously ill patients enough time to sort out their feelings and raise important questions. What is at stake here is not information about prognosis and treatments but the very survival of the soul.  相似文献   
129.
This article describes mortality patterns for nonprofit organizations in a major U.S. metropolitan area between 1980 and 1988. Twenty percent of the nonprofits in a panel ceased operations during this period. Mortality rates were found to vary widely. In some instances, high mortality was found in parts of the sector that were growing rapidly. Overall, nonprofits that ceased to operate were younger and smaller, used fewer strategies to attract funders, and had less diversified income streams than survivors. These patterns also varied substantially. The results point to the drawbacks of using limited or commonsense information and the necessity of theory-based research.  相似文献   
130.
In October 1992, the American College of Physician Executives sponsored a study tour to Berlin, Germany, and Amsterdam, Holland. Meetings were held with government officials, third-party payers, and providers, and on-site visits were made at hospitals, clinics, and academic centers. The purpose was to study the health care delivery system in those countries and to share some insights with the countries' hosts on the U.S. system. In a series of reports that began in the July issue of the journal, 5 of the 10 study tour participants describe their impressions of the tour and of the health care systems in the countries that were visited. In this final report, the implications of the German and Dutch systems for reform of the U.S. health care system are discussed.  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