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   271篇
  免费   6篇
财政金融   53篇
工业经济   13篇
计划管理   81篇
经济学   46篇
综合类   1篇
运输经济   12篇
旅游经济   17篇
贸易经济   32篇
农业经济   8篇
经济概况   14篇
  2023年   1篇
  2022年   1篇
  2021年   2篇
  2020年   5篇
  2019年   11篇
  2018年   14篇
  2017年   7篇
  2016年   8篇
  2015年   1篇
  2014年   5篇
  2013年   47篇
  2012年   5篇
  2011年   8篇
  2010年   4篇
  2009年   9篇
  2008年   7篇
  2007年   7篇
  2006年   4篇
  2005年   3篇
  2004年   6篇
  2003年   8篇
  2002年   4篇
  2001年   5篇
  2000年   4篇
  1999年   5篇
  1998年   5篇
  1997年   3篇
  1996年   3篇
  1995年   1篇
  1994年   6篇
  1993年   2篇
  1992年   2篇
  1991年   2篇
  1990年   5篇
  1989年   8篇
  1988年   8篇
  1987年   3篇
  1986年   6篇
  1985年   9篇
  1984年   3篇
  1983年   1篇
  1982年   6篇
  1981年   4篇
  1980年   1篇
  1979年   4篇
  1978年   3篇
  1976年   8篇
  1975年   1篇
  1973年   1篇
  1925年   1篇
排序方式: 共有277条查询结果,搜索用时 15 毫秒
31.
32.
33.
34.
35.
In the context of the massive expansion of the knowledge base facing all fields of professional activity, instructional science (which embraces the use of a knowledge-engineering approach to curriculum design) could well help to unvael the complexity of important pedagogical issues confronting accounting educationalists. The delineation and use of an expert knowledge base within the framework of the ‘dimensions of processing model’ of human information processing provides a valuable focus for making decision about the breadth, depth and nature of specific educatinal objectives. Knowledge engineering, which is fundamental to this process, appears to provide an appropriate framework for the systematic planning, development, delivery and evaluation of high-quality education and training programmes. Such an approach base while ensuring practitioners and teachers to keep pace with their rapidly changing knowledge base while ensuring that students acquire and become competent in the use of the cognitive skills they need in order to work effectively in their chosen profession.  相似文献   
36.
37.
38.
The analysis of two earlier writers is replicated using a data base pertaining to Melbourne, Australia, for the period 1901 to 1976. Several alternative functional forms of the population density functions are tested to determine comparative goodness of fit to the data. Population estimates are obtained and contrasted to actual population figures, and finally density functions incorporating time as an argument are estimated.  相似文献   
39.
It is argued that the ongoing CAP/GATT reforms provide a basis for the introduction of environmental cross-compliance (ECC). ECC enables policymakers to restrict output-related direct support payments to those farmers who comply with specified environmental guidelines aimed at reducing the external damage effects of agricultural production. This paper is an exploratory investigation of ECC and presents the results of a farm-level linear programming analysis of 15 North-West England arable farms. The environmental guidelines, which relate to permanent as opposed to rotational set-aside and to levels of fertiliser use, are widely applicable to the extent that ECC can be implemented as a voluntary policy system. They are clearly effective in achieving policy goals since all but one of the farmers investigated would comply with the full range of restrictions considered. Within this range, gross margins are reduced by up to 10 per cent while area and output of seed crops are reduced by around 22 per cent and 12 per cent respectively. Row crops area and output are more robust, each falling by just under 4 per cent.  相似文献   
40.
In INTERECONOMICS No. 3, 1976, we published an Interview with Professor Dr Walter Hallstein, former President of the EEC Commission, on the Belgian Prime Minister’s, Leo Tindemans’, “Report on the European Union”. Meanwhile the Report has been discussed on occasion of the last European Council meeting in Luxembourg whose unfortunate outcome pointed out in a dramatic way the weakness of the political will of the Community. In the following article the President of the Council, Gaston Thorn, explains his views of the significance of the so-called “Tindemans 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