全文获取类型
收费全文 | 24245篇 |
免费 | 425篇 |
专业分类
财政金融 | 4443篇 |
工业经济 | 1854篇 |
计划管理 | 3873篇 |
经济学 | 5165篇 |
综合类 | 260篇 |
运输经济 | 152篇 |
旅游经济 | 314篇 |
贸易经济 | 3682篇 |
农业经济 | 1343篇 |
经济概况 | 3527篇 |
信息产业经济 | 3篇 |
邮电经济 | 54篇 |
出版年
2020年 | 218篇 |
2019年 | 322篇 |
2018年 | 455篇 |
2017年 | 421篇 |
2016年 | 420篇 |
2015年 | 276篇 |
2014年 | 423篇 |
2013年 | 2192篇 |
2012年 | 600篇 |
2011年 | 648篇 |
2010年 | 563篇 |
2009年 | 666篇 |
2008年 | 634篇 |
2007年 | 552篇 |
2006年 | 526篇 |
2005年 | 516篇 |
2004年 | 465篇 |
2003年 | 492篇 |
2002年 | 452篇 |
2001年 | 460篇 |
2000年 | 476篇 |
1999年 | 437篇 |
1998年 | 424篇 |
1997年 | 411篇 |
1996年 | 451篇 |
1995年 | 406篇 |
1994年 | 415篇 |
1993年 | 366篇 |
1992年 | 411篇 |
1991年 | 422篇 |
1990年 | 393篇 |
1989年 | 327篇 |
1988年 | 302篇 |
1987年 | 278篇 |
1986年 | 343篇 |
1985年 | 473篇 |
1984年 | 459篇 |
1983年 | 438篇 |
1982年 | 413篇 |
1981年 | 419篇 |
1980年 | 372篇 |
1979年 | 393篇 |
1978年 | 345篇 |
1977年 | 297篇 |
1976年 | 280篇 |
1975年 | 275篇 |
1974年 | 242篇 |
1973年 | 211篇 |
1972年 | 200篇 |
1971年 | 167篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
We examine the association between abnormal returns and earnings management in the context of price control regulations to test the construct validity of the earnings management model. Abnormal returns are used as a market–based measure, and discretionary accruals are employed to measure earnings management. Our results support the hypotheses that (1) price control regulations affect firms' security prices negatively, (2) firms make income–decreasing discretionary accruals to increase the likelihood of price increase approval, and (3) firms that are affected most negatively by the regulations manage earnings more aggressively. We conclude that the earnings management model we use in this study is capable of predicting opportunistic discretionary accruals. 相似文献
2.
An Empirical Analysis of Entrant and Incumbent Bidding in Road Construction Auctions 总被引:3,自引:0,他引:3
Dakshina G. De Silva Timothy Dunne Georgia Kosmopoulou 《The Journal of industrial economics》2003,51(3):295-316
This paper explores differences in the bidding patterns of entrants and incumbents in road construction auctions. We find that entrants bid more aggressively and win auctions with significantly lower bids than incumbents. The differences in their bidding patterns are consistent with a model of auctions in which the distribution of an entrant's costs exhibits greater dispersion than that of an incumbent's and relations of stochastic dominance in the distributions do not persist for the entire range of estimated costs. We also find that more efficient firms bid, on average, more aggressively and firms with greater backlogs bid less aggressively. 相似文献
3.
4.
In this paper we will analyze the relationship between the value and duration moments of a cash flow and movements in the yield curve. We will show that for changes in the yield curve which can be related to tn , the 1st order changes in the net present value of a cash flow are linearly dependent on the n + lth duration moments, and that the 2nd order changes are dependent on the sum of duration moments of order 2 n + 1 and 2 n + 2. We will use this relationship to tilt tracking portfolios so as to protect them against specific changes in the yield curve. 相似文献
5.
6.
7.
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
8.
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
9.
In the presence of foreign factor ownership tariffs change not only the terms of (goods) trade but also income flows between countries. Assume that only the home country owns factors abroad. Then the optimal tariff is negative if and only if foreign factor ownership entails trade-pattern reversals. Trade-pattern reversals are neither a necessary nor a sufficient condition for a negative optimal tariff if the foreign country owns factors in the home country. Changes in the home country's tariff shift the foreign country's offer curve. This adds a new dimension to optimal tariff analysis. 相似文献
10.
Previous tests for structural changes (slope changes) and shifts (intercept changes) in the Phillips curve and union wage determination specify the date of structural change a priori. This article tests for structural changes and shifts without specifying the change point ex ante . The results support the belief that structural changes occurred in the early 1980s. Contrary to some previous research, however, the results do not support a structural shift in the Phillips curve. 相似文献