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   38850篇
  免费   812篇
财政金融   7589篇
工业经济   3131篇
计划管理   6276篇
经济学   8398篇
综合类   446篇
运输经济   270篇
旅游经济   589篇
贸易经济   5968篇
农业经济   1845篇
经济概况   5119篇
信息产业经济   5篇
邮电经济   26篇
  2021年   228篇
  2020年   432篇
  2019年   595篇
  2018年   785篇
  2017年   780篇
  2016年   731篇
  2015年   500篇
  2014年   776篇
  2013年   3944篇
  2012年   1029篇
  2011年   1156篇
  2010年   1061篇
  2009年   1219篇
  2008年   1073篇
  2007年   923篇
  2006年   858篇
  2005年   784篇
  2004年   747篇
  2003年   776篇
  2002年   716篇
  2001年   752篇
  2000年   804篇
  1999年   770篇
  1998年   735篇
  1997年   716篇
  1996年   680篇
  1995年   637篇
  1994年   641篇
  1993年   647篇
  1992年   674篇
  1991年   681篇
  1990年   590篇
  1989年   512篇
  1988年   500篇
  1987年   446篇
  1986年   523篇
  1985年   731篇
  1984年   720篇
  1983年   706篇
  1982年   615篇
  1981年   598篇
  1980年   560篇
  1979年   554篇
  1978年   469篇
  1977年   428篇
  1976年   379篇
  1975年   369篇
  1974年   320篇
  1973年   286篇
  1972年   246篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
Biosecurity and wine tourism   总被引:1,自引:0,他引:1  
  相似文献   
42.
43.
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   
44.
45.
46.
Irving Fisher has been overlooked as an influence on William Vickrey's work on taxation and as a link between Edgeworth and Vickrey. Vickrey was Fisher's last and greatest student.  相似文献   
47.
48.
Despite the importance of the London markets and the significance of the relationship for market makers, little published research is available on arbitrage between the FTSE‐100 Index futures and the FTSE‐100 European index options contracts. This study uses the put–call–futures parity condition to throw light on the relationship between options and futures written against the FTSE Index. The arbitrage methodology adopted in this study avoids many of the problems that have affected prior research on the relationship between options or futures prices and the underlying index. The problems that arise from nonsynchroneity between options and futures prices are reduced by the matching of options and futures prices within narrow time intervals with time‐stamped transaction data. This study allows for realistic trading and market‐impact costs. The feasibility of strategies such as execute‐and‐hold and early unwinding is examined with both ex‐post and ex‐ante simulation tests that take into consideration possible execution time lags for the arbitrage trade. This study reveals that the occurrence of matched put–call–futures trios exhibits a U‐shaped intraday pattern with a concentration at both open and close, although the magnitude of observed mispricings has no discernible intraday pattern. Ex‐post arbitrage profits for traders facing transaction costs are concentrated in at‐the‐money options. As in other major markets, despite important microstructure differences, opportunities are generally rapidly extinguished in less than 3 min. The results suggest that arbitrage opportunities for traders facing transaction costs are small in number and confirm the efficiency of trading on the London International Financial Futures and Options Exchange. © 2002 John Wiley & Sons, Inc. Jrl Fut Mark 22:31–58, 2002  相似文献   
49.
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   
50.
This study investigates whether economic consequences have an effect on the length of the period over which goodwill is amortized. It finds that there is a significant relationship between the size of the firm and the length of the amortization period. It also finds, when the only firms included in the sample are those reporting debt covenant restrictions dependent in part on goodwill accounting, evidence that the length of the amortization period for goodwill is related to the firm's leverage.  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