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   137189篇
  免费   3238篇
  国内免费   1篇
财政金融   25740篇
工业经济   11607篇
计划管理   21824篇
经济学   29268篇
综合类   1454篇
运输经济   973篇
旅游经济   2502篇
贸易经济   23685篇
农业经济   6131篇
经济概况   16950篇
信息产业经济   8篇
邮电经济   286篇
  2021年   851篇
  2020年   1657篇
  2019年   2410篇
  2018年   2392篇
  2017年   2561篇
  2016年   2734篇
  2015年   2115篇
  2014年   3458篇
  2013年   15393篇
  2012年   4261篇
  2011年   4214篇
  2010年   3748篇
  2009年   4344篇
  2008年   3910篇
  2007年   3272篇
  2006年   3597篇
  2005年   3560篇
  2004年   3140篇
  2003年   2893篇
  2002年   2870篇
  2001年   2619篇
  2000年   2574篇
  1999年   2465篇
  1998年   2333篇
  1997年   2355篇
  1996年   2186篇
  1995年   2007篇
  1994年   2015篇
  1993年   1987篇
  1992年   2043篇
  1991年   1946篇
  1990年   1818篇
  1989年   1676篇
  1988年   1614篇
  1987年   1613篇
  1986年   1695篇
  1985年   2446篇
  1984年   2321篇
  1983年   2136篇
  1982年   1980篇
  1981年   1903篇
  1980年   1869篇
  1979年   1817篇
  1978年   1629篇
  1977年   1618篇
  1976年   1384篇
  1975年   1270篇
  1974年   1189篇
  1973年   1185篇
  1972年   897篇
排序方式: 共有10000条查询结果,搜索用时 8 毫秒
141.
Previous research finds that large companies previously judged to be excellent growth companies have subsequently been poor investments. We examine small companies selected by Business Week on the basis of multiple criteria used in annual articles featuring highly rated growth companies. We study the investment performance over the three years before eleven annual Business Week publications and the three years after publication. We find positive excess returns in the pre‐publication period, but negative excess returns in the post‐publication period. This reversal in investment performance appears to be due to a mean‐reversion tendency in operating performance, in which the earnings and the past rates of return on capital of such companies subsequently decrease significantly.  相似文献   
142.
The intrinsic value approach amortizes over the life of the option, the difference between the stock price on the date of the grant and the exercise price of the option. The fair market value approach amortizes over the life of the option, the market value of stock options on the date of the grant. These approaches do not reflect the changes in the option–based compensation cost after the grant date. This paper proposes an economic cost approach that not only adjusts for the changes in the value of the options during its life but also records the issuance of the stock at fair market value on the exercise date.  相似文献   
143.
144.
We study the role of institutional investors around the world using a comprehensive data set of equity holdings from 27 countries. We find that all institutional investors have a strong preference for the stock of large firms and firms with good governance, while foreign institutions tend to overweight firms that are cross-listed in the U.S. and members of the Morgan Stanley Capital International World Index. Firms with higher ownership by foreign and independent institutions have higher firm valuations, better operating performance, and lower capital expenditures. Our results indicate that foreign and independent institutions, with potentially fewer business ties to firms, are involved in monitoring corporations worldwide.  相似文献   
145.
This article examines the economic outcome of 2006 and builds a forecast for 2007–2010. The medium-term development risks of the Russian economy are analyzed.  相似文献   
146.
一、全球经济展望 实际上要想做得精确非常容易,但是要想做正确是很难的,经济学家在社会当中只会"正确"两字,所以我想给大家介绍各种各样的想法,并进行讨论,你们可以自己判断经济的前景到底如何,以及我们面临怎样的风险.  相似文献   
147.
Using a measure of default likelihood based on an option pricing method, we provide evidence that Fed policy actions affect the financial distress of commercial banks. When the Fed increases (decreases) interest rates, the measure of default likelihood increases (decreases). We show that when the Fed uses a tight money policy, the increase in default likelihood is more pronounced for banks that have less capital, have greater financial leverage, are smaller, have fewer growth opportunities, and have lower asset quality. Additionally, the effects on bank default likelihood are more pronounced when the Fed's policy signals less concern about economic growth, as indicated by its bias toward further tightening, and when there is a market expectation of higher short‐term market rates in the future.  相似文献   
148.
An issue in the pricing of contingent claims is whether to account for consumption risk. This is relevant for contingent claims on stock indices, such as the FTSE 100 share price index, as investor’s desire for smooth consumption is often used to explain risk premiums on stock market portfolios, but is not used to explain risk premiums on contingent claims themselves. This paper addresses this fundamental question by allowing for consumption in an economy to be correlated with returns. Daily data on the FTSE 100 share price index are used to compare three option pricing models: the Black–Scholes option pricing model, a GARCH (1, 1) model priced under a risk-neutral framework, and a GARCH (1, 1) model priced under systematic consumption risk. The findings are that accounting for systematic consumption risk only provides improved accuracy for in-the-money call options. When the correlation between consumption and returns increases, the model that accounts for consumption risk will produce lower call option prices than observed prices for in-the-money call options. These results combined imply that the potential consumption-related premium in the market for contingent claims is constant in the case of FTSE 100 index options.  相似文献   
149.
Replacement investment is essentially a regenerative optimal stopping problem; that is, the key decision concerns when to terminate the life of existing plant – and hence when to start over again. This paper examines this optimisation problem within a continuous time framework and studies the qualitative and quantitative impact of uncertainty on the timing of new investment (and the criteria that should be used for terminating the life of existing plant).  相似文献   
150.
The speed with which communist China has embuaced markets has surprised Western analysis and observers, But Chinese economic progress will founder in corruption and inefficiency, argues Professor Steven Cheung of the university of Hong Kong, untess she insitutes a well-defined system of private property rights to safeguord investment and stimulate trade.  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