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   139801篇
  免费   3944篇
  国内免费   14篇
财政金融   26090篇
工业经济   12150篇
计划管理   22354篇
经济学   30326篇
综合类   1555篇
运输经济   1003篇
旅游经济   2586篇
贸易经济   23920篇
农业经济   6327篇
经济概况   17189篇
信息产业经济   7篇
邮电经济   252篇
  2021年   864篇
  2020年   1667篇
  2019年   2438篇
  2018年   2399篇
  2017年   2610篇
  2016年   2769篇
  2015年   2150篇
  2014年   3491篇
  2013年   15641篇
  2012年   4324篇
  2011年   4489篇
  2010年   4004篇
  2009年   4564篇
  2008年   4121篇
  2007年   3466篇
  2006年   3759篇
  2005年   3709篇
  2004年   3234篇
  2003年   3014篇
  2002年   2951篇
  2001年   2691篇
  2000年   2605篇
  1999年   2485篇
  1998年   2386篇
  1997年   2399篇
  1996年   2228篇
  1995年   2057篇
  1994年   2041篇
  1993年   2009篇
  1992年   2056篇
  1991年   1966篇
  1990年   1851篇
  1989年   1701篇
  1988年   1624篇
  1987年   1623篇
  1986年   1709篇
  1985年   2517篇
  1984年   2375篇
  1983年   2191篇
  1982年   2040篇
  1981年   1958篇
  1980年   1930篇
  1979年   1864篇
  1978年   1660篇
  1977年   1629篇
  1976年   1409篇
  1975年   1288篇
  1974年   1207篇
  1973年   1199篇
  1972年   904篇
排序方式: 共有10000条查询结果,搜索用时 296 毫秒
251.
This study examines whether the uncertainty arising from a firm's exposure to future environmental costs (environmental uncertainty) affects the market's price sensitivity to reported earnings. Specifically, when environmental uncertainty is significantly high, are investors more responsive to reported earnings released by 'high-polluting' firms than reported earnings announced by 'low-polluting' firms within the same industry? The initial impact of Title IV (the acid rain provisions) of the 1990 Clean Air Act Amendments (1990 CAAA) on the US electric utility industry provides the research setting required to isolate the effects of environmental uncertainty while addressing this question. Consistent with theoretical predictions, we find that the earnings response coefficients (ERCs) of high-polluting electric utilities are significantly greater than those of their low-polluting counterparts during a predicted period of elevated environmental uncertainty. In adjoining sample years associated with lower environmental uncertainty, we observe no statistical difference in the magnitude of the ERCs between these two groups. In addition, the study's findings suggest that the magnitude of the ERC is increasing in the firm's exposure to future environmental costs, after controlling for other factors that potentially affect ERCs.  相似文献   
252.
尽管偶尔有些失望与不信任的言论出现,经济生活的全球化现在仍然成为了必然之势。在过去的几十年中,恐怕再也没有其他场所比全球金融市场更能体现这种日渐普遍的趋势。资本流动的倍增给发达国家和发展中国家都创造了无数新的盈利机会,同时,也给这些国家的政策制定者带来了艰巨的挑战,一切还都尘埃未定。  相似文献   
253.
This paper uses evidence from late nineteenth-and early twentieth-century personnel records of two Australian banks to examine the nature of internal labour markets prior to the Second World War. It is argued that the industry possessed all the classic features of internal labour markets: limited ports of entry, internal promotion, long careers, and assignment of wages by well-defined rules. The paper then examines the reasons why banks adopted internal labour markets. Finally, the paper examines the recent decline of internal labour markets and examines the role of technological and social changes in this decline.  相似文献   
254.
This paper investigates the price adjustment and lead-lag relations between returns on five size-based portfolios in the Taiwan stock market. It finds evidence that the price adjustment of small-stock portfolios is not slower than that of large-stock portfolios. Additionally, limited evidence supports a positive leading role of large-stock portfolio returns over small-stock portfolio returns. These two findings are substantially different from the results of previous research on developed markets.  相似文献   
255.
This paper explores the methodology of sectoral productivity growth measurement within the framework of input-output analysis. A method which ensures that sectoral productivity growth rates are consistent with productivity growth rates for the economy as a whole (as well as allowing for external trade) is suggested. New estimates are presented on total factor productivity in UK agriculture using a Tornqvist index procedure. In addition, new estimates of agricultural labour productivity growth are presented, taking account not only of labour employed in agriculture but also of labour employed in ancillary industries on the supply side. The empirical results confirm that part of the labour previously employed on farms has shifted “upstream” to industries providing agriculture with fertilises, machinery and other inputs.  相似文献   
256.
257.
258.
Rapport de la Commission chargée d'étudier l'organisation du corps consulaire français. (Mémorial diplomatique van 24 en 31Januari, 7 en 14Februari 1885).  相似文献   
259.
260.
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