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   4635篇
  免费   110篇
财政金融   463篇
工业经济   220篇
计划管理   817篇
经济学   830篇
综合类   14篇
运输经济   32篇
旅游经济   34篇
贸易经济   738篇
农业经济   214篇
经济概况   1344篇
邮电经济   39篇
  2023年   32篇
  2021年   37篇
  2020年   60篇
  2019年   93篇
  2018年   118篇
  2017年   112篇
  2016年   101篇
  2015年   76篇
  2014年   150篇
  2013年   416篇
  2012年   168篇
  2011年   197篇
  2010年   141篇
  2009年   155篇
  2008年   150篇
  2007年   135篇
  2006年   120篇
  2005年   84篇
  2004年   124篇
  2003年   124篇
  2002年   102篇
  2001年   64篇
  2000年   70篇
  1999年   54篇
  1998年   58篇
  1997年   53篇
  1996年   61篇
  1995年   43篇
  1994年   33篇
  1993年   54篇
  1992年   50篇
  1991年   40篇
  1990年   44篇
  1989年   48篇
  1988年   49篇
  1987年   38篇
  1986年   48篇
  1985年   69篇
  1984年   58篇
  1983年   40篇
  1982年   37篇
  1981年   32篇
  1980年   25篇
  1978年   26篇
  1977年   21篇
  1976年   19篇
  1974年   18篇
  1973年   18篇
  1972年   28篇
  1970年   18篇
排序方式: 共有4745条查询结果,搜索用时 0 毫秒
21.
This paper discusses the impact of a redistribution of current income from the White to the Black population on the distribution of sectoral output, and total employment by means of a semi‐closed input‐output model.

The results show that a redistribution of current income towards Black households — which no doubt will have positive social and political repercussions — has a non‐negative effect on GDP and a definite positive effect on the performance of sectors with a high private consumption expenditure component, as well as on total employment.  相似文献   

22.
Different viewpoints were expressed at the 1990 annual national conference of the South African Society for Agricultural Extension regarding the role of extension in the development of the farmer as entrepreneur. It is expected that public funding will increasingly be limited to functions of general public interest. To achieve independence farmers should be willing to expose themselves to entrepreneur development stimuli. it is in the public interest to develop scarce human, economic and natural resources. Research findings indicate distinct behavioral differences between entrepreneurs of differing perceptions. A comprehensive interdisciplinary education is recommended for agriculturalists. Because needs change, education programmes must be re‐evaluated from time to time. It serves little purpose to educate people in extension who do not have a technical message to communicate. The state extension service seeks closer cooperation and liaison with agricultural co‐operative and private sector know‐how. Departmental policy will probably be less rigid in future.

A clear distinction should be made between information and extension services. The adoption of an ethical code for extensionists may be opportune. Relevancy is an important contributing factor to extensionist credibility.  相似文献   

23.
Seven computerprograms for non-linear regression or curve fitting problems are compared. The comparison of the programs, running in different computing centra, is restricted to the fit performance. Six model functions are fitted according to the least squares criterion to data series, arising from practical work. The special least squares minimization programs turned out to be better suited for these problems than general optimizing programs.  相似文献   
24.
25.
Simulated annealing: An introduction   总被引:1,自引:0,他引:1  
  相似文献   
26.
27.
28.
In this paper we revisit the Dutch disease paying particular attention to the role of specific factors of production and capital stock dynamics. The main insight is that if the natural resource rich windfall is substantial but not large enough for the country to become a rentier, capital goods must be produced at home and adjustment to natural resource windfall takes time. It takes time to build this home-grown capital. Specific factors are crucial to explain the dynamic responses of the real exchange rate, capital intensities and wages in response to a natural resource windfall. If a country is small and the windfall is large, it may be able to import capital and migrant labour in which case the Dutch disease can be avoided.  相似文献   
29.
30.
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