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   17295篇
  免费   418篇
财政金融   3399篇
工业经济   1192篇
计划管理   2799篇
经济学   3663篇
综合类   173篇
运输经济   118篇
旅游经济   253篇
贸易经济   3234篇
农业经济   675篇
经济概况   1977篇
信息产业经济   2篇
邮电经济   228篇
  2023年   103篇
  2021年   131篇
  2020年   251篇
  2019年   317篇
  2018年   505篇
  2017年   496篇
  2016年   474篇
  2015年   315篇
  2014年   478篇
  2013年   2032篇
  2012年   505篇
  2011年   611篇
  2010年   590篇
  2009年   568篇
  2008年   532篇
  2007年   457篇
  2006年   398篇
  2005年   330篇
  2004年   319篇
  2003年   331篇
  2002年   343篇
  2001年   326篇
  2000年   350篇
  1999年   327篇
  1998年   328篇
  1997年   283篇
  1996年   245篇
  1995年   235篇
  1994年   257篇
  1993年   258篇
  1992年   279篇
  1991年   272篇
  1990年   220篇
  1989年   200篇
  1988年   175篇
  1987年   175篇
  1986年   181篇
  1985年   255篇
  1984年   270篇
  1983年   266篇
  1982年   231篇
  1981年   216篇
  1980年   184篇
  1979年   184篇
  1978年   167篇
  1977年   146篇
  1976年   141篇
  1975年   156篇
  1974年   110篇
  1973年   108篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
42.
The notion that prices impound a wide array of information, including market expectations, has led to earnings forecast models conditioned on prices. Yet, presumably, analysts' forecasts capture both public information and certain private information not previously impounded in prices. Accordingly, price-based models are seemingly an inefficient, and less effective, source of expecta-tions. This article investigates this hypothesis using financial analysts', price-based, and naive forecasts. Results indicate that analysts' forecasts (1) are at least as accurate as price-based and naive models, and (2) yield better expectations for market tests relating returns and earnings. These inferences are robust across different information environments. The evidence suggests that analysts either possess private information or are more effective information processors, or both.  相似文献   
43.
44.
This paper highlights the difficulty of developing HT firms in a peripheral region of Spain. Although the endogenous development of HT firms in these regions is possible, their evolution depends on more central regions. The firm's geographical location and the type of HT production are the most important endogenous factors governing the firm's success.  相似文献   
45.
46.
47.
Popular monthly coincident indices of business cycles, e.g. the composite index and the Stock–Watson coincident index, have two shortcomings. First, they ignore information contained in quarterly indicators such as real GDP. Second, they lack economic interpretation; hence the heights of peaks and the depths of troughs depend on the choice of an index. This paper extends the Stock–Watson coincident index by applying maximum likelihood factor analysis to a mixed‐frequency series of quarterly real GDP and monthly coincident business cycle indicators. The resulting index is related to latent monthly real GDP. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   
48.
Borda's vote method was used by the French Academy from 1796 to 1803 when Napoleon got it abolished. In the laws and regulations of the Academy there are stipulations regarding the election of new members. The practice is demonstrated by some examples from the protocols. In fact, Borda presented two vote methods which he showed would give the same conclusion. The method which has not been in the limelight proves to be the same one as is used for selecting the best player in chess tournaments.  相似文献   
49.
In One destiny: Our common future in Africa the author relates, in popular fashion, a series of incidents which convinced him that the basic difference between black and white in South Africa is cultural deep‐seated and the cause of underdevelopment and conflict He develops a circular argument in which world‐view is taken as the root of perceptions, values and activities. The effects of experience and economic and political factors are given secondary importance. This argument cannot accommodate social change and differentiation, and the author tends to concentrate on perceptions and events which he finds morally unacceptable. He gives an unbalanced assessment and an ethnocentric interpretation of African life. Possible reasons for this type of argument are explored and an alternative which takes its departure from the interaction between experience and perception is offered  相似文献   
50.
The paper hypothesizes that diversification by firms based in the pharmaceutical industry during the 1977-86 time period was primarily undertaken to reduce the risks associated with being dependent upon a technologically dynamic environment. Consistent with this non-efficiency motive for diversification, declining economic performance is predicted. A longitudinal empirical analysis provides support for these propositions.  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