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   51723篇
  免费   1140篇
  国内免费   13篇
财政金融   9368篇
工业经济   3702篇
计划管理   8728篇
经济学   11778篇
综合类   674篇
运输经济   384篇
旅游经济   899篇
贸易经济   8720篇
农业经济   2396篇
经济概况   6122篇
邮电经济   105篇
  2021年   374篇
  2020年   624篇
  2019年   818篇
  2018年   1180篇
  2017年   1266篇
  2016年   1160篇
  2015年   808篇
  2014年   1163篇
  2013年   5383篇
  2012年   1490篇
  2011年   1576篇
  2010年   1387篇
  2009年   1526篇
  2008年   1543篇
  2007年   1381篇
  2006年   1239篇
  2005年   1195篇
  2004年   1104篇
  2003年   1117篇
  2002年   1034篇
  2001年   988篇
  2000年   995篇
  1999年   881篇
  1998年   886篇
  1997年   876篇
  1996年   868篇
  1995年   755篇
  1994年   800篇
  1993年   823篇
  1992年   812篇
  1991年   834篇
  1990年   719篇
  1989年   617篇
  1988年   588篇
  1987年   609篇
  1986年   641篇
  1985年   926篇
  1984年   874篇
  1983年   890篇
  1982年   836篇
  1981年   746篇
  1980年   721篇
  1979年   725篇
  1978年   592篇
  1977年   568篇
  1976年   473篇
  1975年   444篇
  1974年   423篇
  1973年   374篇
  1972年   289篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
211.
212.
213.
To pinpoint problems, look at hardware, software, support training and the user. The problem may reside in any one, or several, of these areas.  相似文献   
214.
Kosterlitz J 《National journal》1991,23(40):2408-2413
Just about everyone applauds the use of cost estimates for federal programs as a way to curb the federal government's tendency to spend in the face of rising budget deficits. But a nagging question arises: Just how good are these cost estimates?  相似文献   
215.
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   

216.
Hewlett-Packard evaluated its future marketing needs and compared it to the capabilities of current employees. This case study is an example of how other companies can ensure they have the best people to meet their strategic goals.  相似文献   
217.
In summary, changes came slowly at first in the OR. The biggest inventory reduction came about a year after the effort had begun. It would seem that tackling obsolescence, standardizing products, etc. would give an initial "big chunk" savings, with small amounts coming later as inventories are lowered. What we expected did not occur, due to the inherent nature of practices and what was customarily being used. For example, previously, some equipment purchases were paid for by purchasing product, which resulted in long-term commitments and high supply costs. The OR at times seemed more like a process of managing change, not just supplies. FOCUS is a daily process. How many times can you afford to overlook this process? How often are the mistakes of the past repeated? In review, we suggest this simple outline: Follow-through (review each case from start to finish), Obsolescence (schedule inventories every six months), Control (achieve inventory management by adjusting PAR levels to needs), Utilization (utilize product/equipment with your control), and Standardization (standardize products and measure results).  相似文献   
218.
219.
220.
C. J. Oort 《De Economist》1990,138(4):451-463
Summary Does today's banking scene pose a potential threat to the stability of the international financial system? The article discusses three possible sources of vulnerability of the international banking system: a major bank failure causing a general banking crisis via the extensive interbank linkages; the systemic risks allegedly inherent in certain new (as well as traditional) financial products; and the impact of external events such as debt crises, violent swings in exchange or interest rates, deregulation and recession. The author's conclusion is twofold: systemic risks clearly exist, but the probability of a major banking crisis tends to be greatly exaggerated. Banks not only survived the various crises of the seventies and eighties; they also learned in the process. Capital and reserves have been strengthened, provisions for country risk and for general contingencies have increased, supervision has been tightened and it is exercised on a comprehensive as well as a world-wide consolidated basis (i.e. including all contingent and off-balance liabilities, and all offshore activities). Assuming reasonably intelligent policies on the part of the monetary authorities and adequate international coordination, a general banking crisis can be avoided. Official rescue operations do, however, raise difficult questions of an ethical, political and economic nature.  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