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   1196篇
  免费   40篇
财政金融   238篇
工业经济   165篇
计划管理   230篇
经济学   222篇
综合类   8篇
运输经济   13篇
旅游经济   41篇
贸易经济   208篇
农业经济   28篇
经济概况   83篇
  2023年   4篇
  2021年   10篇
  2020年   17篇
  2019年   26篇
  2018年   29篇
  2017年   32篇
  2016年   32篇
  2015年   22篇
  2014年   27篇
  2013年   137篇
  2012年   29篇
  2011年   50篇
  2010年   38篇
  2009年   39篇
  2008年   49篇
  2007年   31篇
  2006年   49篇
  2005年   25篇
  2004年   43篇
  2003年   41篇
  2002年   38篇
  2001年   20篇
  2000年   29篇
  1999年   20篇
  1998年   31篇
  1997年   23篇
  1996年   22篇
  1995年   15篇
  1994年   13篇
  1993年   17篇
  1992年   16篇
  1991年   19篇
  1990年   11篇
  1989年   13篇
  1988年   12篇
  1987年   13篇
  1986年   11篇
  1985年   22篇
  1984年   12篇
  1983年   14篇
  1982年   18篇
  1981年   17篇
  1980年   15篇
  1979年   11篇
  1978年   12篇
  1977年   12篇
  1976年   13篇
  1967年   3篇
  1955年   4篇
  1954年   6篇
排序方式: 共有1236条查询结果,搜索用时 0 毫秒
71.
72.
Medicare's prospective payment system for hospitals (PPS), introduced in the USA in 1983, replaced cost reimbursement with a system of fixed rates which created incentives for hospitals to control costs. Previous studies found that elderly patients were discharged from hospital "quicker and sicker" under PPS and concluded that families were coping at home. We analyse a national longitudinal survey, the first National Health and Nutrition Examination Survey and its Epidemiologic Followup Study, which includes data on more outcomes over a longer period than earlier studies. We find that the rate of admission to nursing homes from the community in the first weeks after a hospital discharge more than tripled under PPS, suggesting that families were not always able to cope. As another response to sicker patients, discharges directly to nursing homes from hospitals, which jumped initially under PPS, may have risen further when payment rates were tightened in the early 1990s. Hospital readmissions fell after the first few years. Our findings are strengthened by the fact that we control for patients' health using health information collected independently of hospital admission.  相似文献   
73.
74.
This paper presents up-to-date estimates of the ability of non-resident fathers to pay child support. While no nationally representative data exist on the incomes of fathers, this issue has become more pertinent in recent years, as child support has become an important national issue. We find that fathers on average are able to pay nearly five times more in child support than they currently pay, and also that low income fathers can afford to pay substantially more than they actually pay. We also find that changes in nonmarital childbearing and the returns to education have had only minimal effects on trends in fathers' incomes.  相似文献   
75.
Britain needs a complete transformation of its policy towards monopoly. Robert Miller argues that freedom of entry is the vital ingredient of policy for regulating monopolies and public utilities.  相似文献   
76.
77.
78.
Serwer A 《Fortune》2003,148(4):173-174
  相似文献   
79.
This study uses a transactional model of stress and coping as a way to understand how outdoor recreationists deal with negative setting elements during a recreation experience. Within the transactional model, coping behaviors can be viewed as the result of on-going transactions among personal and environmental factors, perceptions of threat or stress, and the perceived effectiveness of coping strategies. The current study focuses specifically on the relationship between reported levels of stress and the types of coping strategies used by recreationists in Glacier National Park. Findings suggest that certain behavioral and cognitive coping responses to stress are associated with different levels of reported stress. Specifically, respondents with lower levels of stress were more likely to engage in certain cognitive adjustments to cope with detracting situations. Respondents reporting higher levels of stress were more likely to engage in either direct action aimed at changing the environmental conditions or are displaced entirely from the recreational setting. In addition to these primary findings, the study discusses the range of coping behaviors employed.  相似文献   
80.

The paper presents a conceptual model of an integrated management information system for municipal parks maintenance and operations. Research efforts in management information systems are presented in three categories: Business Research, Federally Sponsored Research, and Park and Recreation Systems Research. A case is made for further empirical research, the development of normative models, and evaluative criteria in an attempt to realize the full potential of electronic data processing in parks and recreation.  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