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   22767篇
  免费   364篇
财政金融   4169篇
工业经济   1707篇
计划管理   3666篇
经济学   4948篇
综合类   494篇
运输经济   124篇
旅游经济   304篇
贸易经济   4028篇
农业经济   768篇
经济概况   2869篇
信息产业经济   4篇
邮电经济   50篇
  2021年   117篇
  2020年   193篇
  2019年   311篇
  2018年   980篇
  2017年   999篇
  2016年   726篇
  2015年   244篇
  2014年   387篇
  2013年   1909篇
  2012年   637篇
  2011年   1165篇
  2010年   1017篇
  2009年   998篇
  2008年   933篇
  2007年   993篇
  2006年   430篇
  2005年   452篇
  2004年   486篇
  2003年   526篇
  2002年   449篇
  2001年   367篇
  2000年   385篇
  1999年   343篇
  1998年   368篇
  1997年   344篇
  1996年   352篇
  1995年   275篇
  1994年   270篇
  1993年   302篇
  1992年   318篇
  1991年   318篇
  1990年   273篇
  1989年   228篇
  1988年   197篇
  1987年   219篇
  1986年   245篇
  1985年   332篇
  1984年   272篇
  1983年   286篇
  1982年   236篇
  1981年   248篇
  1980年   248篇
  1979年   240篇
  1978年   211篇
  1977年   171篇
  1976年   180篇
  1975年   159篇
  1974年   151篇
  1973年   134篇
  1972年   111篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
102.
103.
Trades and Quotes: A Bivariate Point Process   总被引:3,自引:0,他引:3  
This article formulates a bivariate point process to jointlyanalyze trade and quote arrivals. In microstructure models,trades may reveal private information that is then incorporatedinto new price quotes. This article examines the speed of thisinformation flow and the circumstances that govern it. A jointlikelihood function for trade and quote arrivals is specifiedin a way that recognizes that an intervening trade sometimescensors the time between a trade and the subsequent quote. Modelsof trades and quotes are estimated for eight stocks using Tradeand Quote database (TAQ) data. The essential finding for thearrival of price quotes is that information flow variables,such as high trade arrival rates, large volume per trade, andwide bid–ask spreads, all predict more rapid price revisions.This means prices respond more quickly to trades when informationis flowing so that the price impacts of trades and ultimatelythe volatility of prices are high in such circumstances.  相似文献   
104.
Received March 5, 2001; revised version received August 5, 2002 Published online: April 30, 2003  相似文献   
105.
An Erratum for this article has been published in Journal of Applied Econometrics 18(2) 2003, 249 Previous empirical work on corporate growth rates using cross‐section or short‐panel econometric techniques suggests that growth rates are random but that some degree of mean reversion exists. This means that size differences between firms are transitory. Another, more natural way to explore the long‐run distribution of firm sizes is to examine data on the growth of particular firms over long periods of time. Using a sample of 147 UK firms observed continually for more than 30 years, our conclusions are that growth rates are highly variable over time and that differences in growth rates between firms do not persist for very long. Further, firms show no tendency to converge to either a common size or to a pattern of stable size differences over time. These results are compared and contrasted with standard approaches that suggest that firms reach and maintain stable positions in a skewed size distribution. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   
106.
F. David Peat 《Futures》2007,39(8):920-929
The progress of human thought in recent centuries has brought not only new knowledge but also new (and sometimes disturbing) questions that tug at the foundations of knowledge itself. The opening years of the twentieth century were marked by optimistic expectations of ever-increasing certainty and scientific and technological progress. Yet the century turned out to be an age of growing cracks in the facade of classical certainty, as relativity, quantum physics and chaos theory each deepened our understanding of the universe yet raised fundamental challenges to ideas about knowledge. Today, although reductionist and mechanistic ways of thinking still prevail in much contemporary thinking about economics, global security and environmental problems, we can nevertheless contemplate an “end of objectivity” in which we realize that we do not stand outside of the systems we study.  相似文献   
107.
108.
The general design for the real-time electricity market presented in this paper optimizes and prices both real and reactive power simultaneously in an AC setting, where all assets—generation, load and transmission—are allowed to bid and are financially settled at the locational price times energy consumed or produced. The result is that transmission lines are compensated for both capacity and admittance, providing incentives for efficient operation of transmission-related assets such as FACTS devices, if price-taking behavior is assumed. Losses are incorporated into the design and become an operating cost for transmission. The market design is shown to be revenue neutral and, under some assumptions, nonconfiscatory.   相似文献   
109.
Recreation Demand and Residential Location   总被引:2,自引:0,他引:2  
We use the properties of competitive location equilibrium to study the demand for recreation and the choice of primary residence location. Location-specific recreation and employment lead to pooling equilibria in which consumers reside according to their preference for recreation. In general, the stronger the taste for recreation, the greater the attraction of living close to the recreation site and the lower the demand for other goods, including housing. We explore the effects of trip frequency, trip length, and recreation cost on the spatial distribution of consumers. We also consider the effect of the wage rate on recreation and location demands.  相似文献   
110.
Cross‐listings of equities internationally are becoming more common. Using data for Europe and North America, previous studies reject the order flow diversion hypothesis, which states that international cross‐listings reduce home‐country trading volume. We test this hypothesis using data for equities cross‐listed in Singapore and Malaysia. We find that trading volume in Malaysia fell 42.9% when Singapore markets were closed for holidays. Furthermore, we show that trading volume in Malaysia did not increase following the implementation of regulations that ended the trading of Malaysian equities in Singapore in 1998. Hence, we reject the order flow diversion hypothesis.  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