全文获取类型
收费全文 | 49079篇 |
免费 | 988篇 |
国内免费 | 14篇 |
专业分类
财政金融 | 9139篇 |
工业经济 | 3791篇 |
计划管理 | 7720篇 |
经济学 | 10668篇 |
综合类 | 732篇 |
运输经济 | 357篇 |
旅游经济 | 907篇 |
贸易经济 | 7797篇 |
农业经济 | 2448篇 |
经济概况 | 6439篇 |
信息产业经济 | 2篇 |
邮电经济 | 81篇 |
出版年
2021年 | 299篇 |
2020年 | 525篇 |
2019年 | 793篇 |
2018年 | 1011篇 |
2017年 | 1030篇 |
2016年 | 1010篇 |
2015年 | 643篇 |
2014年 | 1097篇 |
2013年 | 4920篇 |
2012年 | 1418篇 |
2011年 | 1534篇 |
2010年 | 1379篇 |
2009年 | 1522篇 |
2008年 | 1485篇 |
2007年 | 1337篇 |
2006年 | 1169篇 |
2005年 | 1037篇 |
2004年 | 1017篇 |
2003年 | 986篇 |
2002年 | 998篇 |
2001年 | 931篇 |
2000年 | 976篇 |
1999年 | 896篇 |
1998年 | 846篇 |
1997年 | 872篇 |
1996年 | 834篇 |
1995年 | 771篇 |
1994年 | 763篇 |
1993年 | 845篇 |
1992年 | 814篇 |
1991年 | 819篇 |
1990年 | 700篇 |
1989年 | 636篇 |
1988年 | 591篇 |
1987年 | 617篇 |
1986年 | 637篇 |
1985年 | 929篇 |
1984年 | 903篇 |
1983年 | 851篇 |
1982年 | 767篇 |
1981年 | 729篇 |
1980年 | 755篇 |
1979年 | 675篇 |
1978年 | 548篇 |
1977年 | 525篇 |
1976年 | 442篇 |
1975年 | 444篇 |
1974年 | 384篇 |
1973年 | 368篇 |
1972年 | 251篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
11.
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
12.
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
13.
14.
15.
16.
This paper applies principles of transition to land tenure and squatting in South Africa. Political transition in South Africa reassigned political property rights, which produced contestable, and rent‐seeking incentives for squatting as a means to privatize land and redistribute wealth. Government failure to establish and protect private property rights in a squatter camp resulted in common‐pool problems that resisted private and public resolution with consequent rent dissipation and social loss. In response to this retreat from duty, informal agents emerged to claim their own share of the prize. Without enforceable rules of capture, the growth of squatter camps in South Africa will continue. JEL classification: D7, H8, K1, K4, R1, R4. 相似文献
17.
Stephen L. Liedtka 《Journal of Business Finance & Accounting》2002,29(7&8):1105-1121
This research extends the literature on nonfinancial performance measures (NFPMs) by assessing (1) the information content of a broader set of NFPMs and (2) whether NFPMs provide information not provided by financial performance measures (FPMs) from all previously identified FPM categories, rather than just earnings and book value. Specifically, exploratory and confirmatory factor analysis results presented in this paper demonstrate that nineteen NFPMs of major airlines capture seven underlying constructs not captured by eighteen common FPMs. Additionally, this research develops reliable composite measures of the identified performance measure constructs, which prior research argues are superior to individual performance measures. 相似文献
18.
19.
20.