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   16209篇
  免费   386篇
  国内免费   1篇
财政金融   3440篇
工业经济   1181篇
计划管理   2733篇
经济学   3638篇
综合类   199篇
运输经济   79篇
旅游经济   246篇
贸易经济   2503篇
农业经济   806篇
经济概况   1694篇
邮电经济   77篇
  2020年   174篇
  2019年   240篇
  2018年   263篇
  2017年   321篇
  2016年   292篇
  2015年   199篇
  2014年   328篇
  2013年   1490篇
  2012年   401篇
  2011年   432篇
  2010年   369篇
  2009年   436篇
  2008年   381篇
  2007年   398篇
  2006年   353篇
  2005年   321篇
  2004年   298篇
  2003年   352篇
  2002年   317篇
  2001年   318篇
  2000年   362篇
  1999年   296篇
  1998年   306篇
  1997年   320篇
  1996年   302篇
  1995年   302篇
  1994年   308篇
  1993年   292篇
  1992年   328篇
  1991年   343篇
  1990年   271篇
  1989年   215篇
  1988年   235篇
  1987年   216篇
  1986年   251篇
  1985年   347篇
  1984年   332篇
  1983年   291篇
  1982年   306篇
  1981年   330篇
  1980年   280篇
  1979年   279篇
  1978年   254篇
  1977年   187篇
  1976年   187篇
  1975年   195篇
  1974年   142篇
  1973年   164篇
  1972年   121篇
  1971年   103篇
排序方式: 共有10000条查询结果,搜索用时 984 毫秒
31.
Option-Implied Risk Aversion Estimates   总被引:4,自引:0,他引:4  
Using a utility function to adjust the risk‐neutral PDF embedded in cross sections of options, we obtain measures of the risk aversion implied in option prices. Using FTSE 100 and S&P 500 options, and both power and exponential‐utility functions, we estimate the representative agent's relative risk aversion (RRA) at different horizons. The estimated coefficients of RRA are all reasonable. The RRA estimates are remarkably consistent across utility functions and across markets for given horizons. The degree of RRA declines broadly with the forecast horizon and is lower during periods of high market volatility.  相似文献   
32.
There are two variance components embedded in the returns constructed using high frequency asset prices: the time-varying variance of the unobservable efficient returns that would prevail in a frictionless economy and the variance of the equally unobservable microstructure noise. Using sample moments of high frequency return data recorded at different frequencies, we provide a simple and robust technique to identify both variance components.  相似文献   
33.
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   
34.
35.
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   
36.
37.
This paper examines the influence of unemployment insurance (UI) on the length of nonemployment spells experienced by young workers. The analysis introduces a flexible duration model to estimate the effects of the weekly benefit amount and weeks of eligibility on the amount of time spent between jobs by men, distinguishing between the experiences of UI and non-UI recipients. The empirical findings suggest three conclusions: (1) UI recipients experience longer spells of nonemployment than their non-UI recipient counterparts, at least up to the point of exhaustion of UI benefits; (2) the level of the weekly benefit amount does not significantly affect the length of nonemployment spells; and (3) increasing the number of weeks of eligibility offered by a UI program leads to longer episodes of nonemployment.  相似文献   
38.
39.
Three policy-relevant questions about multifamily mortgage originations (MFOs) are addressed. First, what is the annual volume of MFOs? This analysis highlights differences and problems among three publicly available multifamily lending surveys; the 1993 volume is estimated at $30 billion. Second, what is the size distribution of multifamily mortgages? Using kernel density estimation, variation in this distribution among central cities and suburbs, underserved areas, and lender type is examined. Third, what are the primary determinants of the variation in multifamily lending? A relatively simple regression model is estimated to shed light on the variables most highly correlated with multifamily lending. Tract income relative to MSA median income and minority concentrations are shown to be highly correlated with lending volume, but the largest source of variation is the number of multifamily rental units in the tract.  相似文献   
40.
The Role of Multinational Firms in the Wage-Gap Debate   总被引:2,自引:0,他引:2  
The observation of an increase in the ratio of skilled to unskilled wages in the high-income countries and in some cases in low/middle-income countries has led to considerable discussion and controversy as to its cause. Virtually none of the analyses have considered a role for multinational investment in explaining the wage-gap phenomenon. This paper adapts the authors' earlier work to consider what role multinationals might play in factor markets. It identifies circumstances under which investment liberalization is likely to raise the wage gap in both the skilled-labor abundant and the unskilled-labor abundant country.  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