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   58225篇
  免费   1158篇
财政金融   10648篇
工业经济   4356篇
计划管理   9724篇
经济学   13240篇
综合类   648篇
运输经济   379篇
旅游经济   904篇
贸易经济   9245篇
农业经济   2879篇
经济概况   7210篇
信息产业经济   4篇
邮电经济   146篇
  2021年   348篇
  2020年   615篇
  2019年   903篇
  2018年   1131篇
  2017年   1131篇
  2016年   1114篇
  2015年   777篇
  2014年   1208篇
  2013年   5757篇
  2012年   1663篇
  2011年   1793篇
  2010年   1526篇
  2009年   1761篇
  2008年   1718篇
  2007年   1522篇
  2006年   1442篇
  2005年   1362篇
  2004年   1246篇
  2003年   1265篇
  2002年   1126篇
  2001年   1203篇
  2000年   1171篇
  1999年   1059篇
  1998年   1091篇
  1997年   1038篇
  1996年   1050篇
  1995年   934篇
  1994年   969篇
  1993年   949篇
  1992年   947篇
  1991年   991篇
  1990年   896篇
  1989年   711篇
  1988年   735篇
  1987年   703篇
  1986年   738篇
  1985年   1066篇
  1984年   1028篇
  1983年   1001篇
  1982年   925篇
  1981年   879篇
  1980年   831篇
  1979年   844篇
  1978年   711篇
  1977年   616篇
  1976年   531篇
  1975年   513篇
  1974年   478篇
  1973年   429篇
  1972年   348篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
241.
242.
243.
In summary, substance abuse is a serious problem in America. In fact, a Gallup poll ranked drug use as the Nation's number one problem. As a rapidly accelerating component of health care costs, charges for alcohol and drug abuse treatment are helping to drive up medical care expenses. The substance abuse crisis is also affecting employers, both public and private, who are struggling to provide needed health benefits while controlling spiraling plan costs. Despite the upward pressure on health costs, the problem is so serious that there has been a steady increase in the incidence of coverage for substance abuse treatment in employer-provided medical care plans, to the point that virtually all plans now provide some benefits. Nevertheless, health plans typically cover substance abuse treatment on a more restrictive basis than other illnesses. This may change, however, as the interest in, and the need for, comprehensive substance abuse treatment benefits grows.  相似文献   
244.
245.
The potential of EDI is virtually unlimited, but the success of any EDI initiative hinges on its ability to directly support strategies that achieve your institution's business objectives. At its most fundamental level, EDI technology automates current business practices, speeding up the exchange of business information. This application of EDI most often is found in a hospital's material management department. But EDI integrated internally within a hospital and externally with suppliers and vendors has the potential to go beyond simple automation and to transform processes. This is where the full value of EDI can be realized. No matter which level of EDI participation hospital management decides is appropriate to fulfill its business objectives and strategies, EDI will affect the entire institution's exchange of information with its internal and external audiences. The question management must answer is: Will the hospital's EDI strategy be offensive and managed, or defensive and reactive? Today's environment leaves no room for a "no-strategy" EDI option. The options are either to proactively shape EDI, or reactively play catch-up. EDI can work for you. Adequately developing an EDI game plan in support of your business objectives and calling on your suppliers and other trading partners to work with you will ensure EDI is an asset to your facility.  相似文献   
246.
This paper has grown out of a long standing personal concern that the current approaches to design teaching are too narrowly based and that they can distort the very activity that they set out to encourage. A survey of the comments made in Examiner's Reports of pupil's work in public design examinations during 1986 & 1987 provides some insight into the difficulties that pupils experienced in carrying out their design activities.Design activity in schools developed from the beginnings initiated by the curriculum development projects of the late 1960's and early 1970's. These put forward methodical approaches to designing which have become widely used in UK secondary schools and which are now firmly embedded in the publications and project assessment framework of the current national examinations.The present study suggests that, while these methodical approaches clearly work, they imply a logical progression of thought which does not necessarily parallel the pattern of human thinking. It is recognised that pupil's design folios written up at the end of a project can be made to describe a logical, systematic procedure which has more to do with the assessment framework than the actual developments of design ideas during the project. Indeed, teachers and candidates were being actively encouraged to base their work on these structured frameworks:The actual style and quality of the folder presentation is also important. This is particularly so when working to a detailed mark scheme. Certainly it is easier to mark a folder which broadly follows the pattern of the mark scheme than one which is very erratic. Teachers are advised as to the advantages of using the mark scheme as a teaching tool and as a guide for folder presentation. NEA, 1986.Finally, the paper examines some more recent developments in the procedural models of design activity and the way in which professional designers approach their work. These insights provide an indication of the way forward for school design work and its assessment.  相似文献   
247.
What happens in today's hospitals when keeping the faith with donors clashes with fiscal politics? An enterprising assistant attorney general asked that question and turned up some disquieting answers.  相似文献   
248.
249.
250.
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