全文获取类型
收费全文 | 32815篇 |
免费 | 373篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 6001篇 |
工业经济 | 1918篇 |
计划管理 | 5232篇 |
经济学 | 7466篇 |
综合类 | 642篇 |
运输经济 | 69篇 |
旅游经济 | 234篇 |
贸易经济 | 6824篇 |
农业经济 | 799篇 |
经济概况 | 3328篇 |
信息产业经济 | 45篇 |
邮电经济 | 631篇 |
出版年
2020年 | 165篇 |
2019年 | 227篇 |
2018年 | 2598篇 |
2017年 | 2405篇 |
2016年 | 1557篇 |
2015年 | 284篇 |
2014年 | 416篇 |
2013年 | 1513篇 |
2012年 | 840篇 |
2011年 | 2375篇 |
2010年 | 2146篇 |
2009年 | 1914篇 |
2008年 | 1865篇 |
2007年 | 2234篇 |
2006年 | 412篇 |
2005年 | 690篇 |
2004年 | 770篇 |
2003年 | 919篇 |
2002年 | 563篇 |
2001年 | 371篇 |
2000年 | 405篇 |
1999年 | 292篇 |
1998年 | 321篇 |
1997年 | 312篇 |
1996年 | 311篇 |
1995年 | 298篇 |
1994年 | 307篇 |
1993年 | 292篇 |
1992年 | 326篇 |
1991年 | 340篇 |
1990年 | 270篇 |
1989年 | 214篇 |
1988年 | 235篇 |
1987年 | 216篇 |
1986年 | 263篇 |
1985年 | 347篇 |
1984年 | 332篇 |
1983年 | 290篇 |
1982年 | 306篇 |
1981年 | 329篇 |
1980年 | 279篇 |
1979年 | 278篇 |
1978年 | 252篇 |
1977年 | 184篇 |
1976年 | 185篇 |
1975年 | 193篇 |
1974年 | 140篇 |
1973年 | 157篇 |
1972年 | 117篇 |
1971年 | 101篇 |
排序方式: 共有10000条查询结果,搜索用时 171 毫秒
91.
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
92.
W. Scott Bauman C. Mitchell Conover Don R. Cox 《The Journal of Financial Research》2002,25(2):169-186
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
93.
94.
Erik Benrud 《Journal of Economics and Finance》2007,31(2):143-165
The demand for and supply of analysts’ opinions in this model yield an equilibrium that demonstrates how the information content
of the opinions reacts to changes in exogenous parameters. The model also shows how changes in the parameters make analysts’
opinions more or less dispersed; for example, a decline in investor risk aversion, a decrease in market volatility, and an
increase in information costs can lead to analysts’ opinions becoming more similar. Recognizing how exogenous factors can
affect the supply and demand of analysts’ opinions gives additional insights into questions concerning what may appear to
be herd behavior by analysts and also the relationship between forecast dispersion and information content. (JEL: G29, C71) 相似文献
95.
E. A. Abramova D. R. Belousov K. V. Mikhailenko 《Studies on Russian Economic Development》2008,19(1):35-45
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
96.
97.
Ohne Zusammenfassung
Dipl.-Ing. (univ.) Michael Belau ist Director und Head of Rental Management
Dipl.-Wirtschaftsing. (FH) Michael Schildger ist Vice President und Head of Finance
Dr. Verena Sturm ist Manager Corporate Real Estate Services 相似文献
98.
99.
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
100.