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   12627篇
  免费   231篇
财政金融   2341篇
工业经济   1106篇
计划管理   1916篇
经济学   2709篇
综合类   180篇
运输经济   75篇
旅游经济   147篇
贸易经济   1853篇
农业经济   715篇
经济概况   1802篇
信息产业经济   2篇
邮电经济   12篇
  2020年   111篇
  2019年   156篇
  2018年   196篇
  2017年   197篇
  2016年   188篇
  2015年   137篇
  2014年   178篇
  2013年   1162篇
  2012年   266篇
  2011年   310篇
  2010年   283篇
  2009年   336篇
  2008年   317篇
  2007年   264篇
  2006年   251篇
  2005年   279篇
  2004年   237篇
  2003年   268篇
  2002年   219篇
  2001年   260篇
  2000年   248篇
  1999年   238篇
  1998年   233篇
  1997年   241篇
  1996年   260篇
  1995年   233篇
  1994年   226篇
  1993年   194篇
  1992年   220篇
  1991年   236篇
  1990年   202篇
  1989年   165篇
  1988年   165篇
  1987年   136篇
  1986年   190篇
  1985年   254篇
  1984年   254篇
  1983年   251篇
  1982年   221篇
  1981年   231篇
  1980年   197篇
  1979年   215篇
  1978年   188篇
  1977年   162篇
  1976年   136篇
  1975年   137篇
  1974年   130篇
  1973年   101篇
  1972年   102篇
  1971年   92篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
2.
3.
Using a sample of Australian Multi-sector trusts we examine selectivity and market timing performance and extend the analysis to include the relatively new measure of volatility timing. This is of particular relevance to our data set, as high levels of volatility persistence are prevalent in Australia. In addition we consider the stability, asymmetry and seasonality of the various performance and risk measures. A survivorship adjustment procedure is also employed in order to assess the impact of survivorship on selectivity, market timing and volatility timing performance.  相似文献   
4.
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   
5.
6.
The paper asks the question – as time series analysis moves from consideration of conditional mean values and variances to unconditional distributions, do some of the familiar concepts devised for the first two moments continue to be helpful in the more general area? Most seem to generalize fairly easy, such as the concepts of breaks, seasonality, trends and regime switching. Forecasting is more difficult, as forecasts become distributions, as do forecast errors. Persistence can be defined and also common factors by using the idea of a copula. Aggregation is more difficult but causality and controllability can be defined. The study of the time series of quantiles becomes more relevant.  相似文献   
7.
8.
Previous research on unit management buyouts, UMBs, has shown that selling firms benefit from the selloff transaction. The current research demonstrates that when the selling firm has either poor liquidity or poor earnings, selling firm shareholders do not benefit as much. We hypothesize that the unit managers have knowledge about the selling firm's difficulties so they do not pay as large a premium for the assets. Since the unit managers technically are employed by the selling firm shareholders, their bargaining to achieve a better price is an agency cost. Finally, selloff frequency does not affect seller abnormal returns.  相似文献   
9.
10.
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