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   14044篇
  免费   380篇
财政金融   3033篇
工业经济   1014篇
计划管理   2262篇
经济学   3029篇
综合类   152篇
运输经济   102篇
旅游经济   226篇
贸易经济   2225篇
农业经济   623篇
经济概况   1744篇
信息产业经济   2篇
邮电经济   12篇
  2023年   76篇
  2021年   85篇
  2020年   194篇
  2019年   257篇
  2018年   342篇
  2017年   341篇
  2016年   314篇
  2015年   211篇
  2014年   333篇
  2013年   1610篇
  2012年   394篇
  2011年   475篇
  2010年   431篇
  2009年   450篇
  2008年   409篇
  2007年   363篇
  2006年   335篇
  2005年   268篇
  2004年   273篇
  2003年   275篇
  2002年   274篇
  2001年   277篇
  2000年   292篇
  1999年   294篇
  1998年   301篇
  1997年   260篇
  1996年   200篇
  1995年   216篇
  1994年   232篇
  1993年   234篇
  1992年   250篇
  1991年   248篇
  1990年   192篇
  1989年   174篇
  1988年   154篇
  1987年   153篇
  1986年   158篇
  1985年   231篇
  1984年   246篇
  1983年   237篇
  1982年   208篇
  1981年   193篇
  1980年   165篇
  1979年   163篇
  1978年   153篇
  1977年   128篇
  1976年   123篇
  1975年   136篇
  1974年   98篇
  1973年   97篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
51.
The 1992 Horizontal Merger Guidelines of the Department of Justice and the Federal Trade Commission outline an enforcement policy which makes a long overdue break with its predecessors in awarding no decisive or predominant role to market concentration as a criterion of anticompetitive effect. However, the new policy does not provide an adequate substitute criterion: the tests that it prescribes for screening merger proposals are so specified that a potentially large proportion of anticompetitive mergers can escape challenge without showing any promise of improving efficiency. The time is ripe for a comprehensive inquiry aimed at formulating a more satisfactory policy.  相似文献   
52.
Our examination of the cross-section of expected returns reveals economically and statistically significant compensation (about 6 to 9 percent per annum) for beta risk when betas are estimated from time-series regressions of annual portfolio returns on the annual return on the equally weighted market index. The relation between book-to-market equity and returns is weaker and less consistent than that in Fama and French (1992). We conjecture that past book-to-market results using COMPUS-TAT data are affected by a selection bias and provide indirect evidence.  相似文献   
53.
54.
55.
S. 《De Economist》1867,16(2):350-362
  相似文献   
56.
Abstract:  Loan announcement effects for 152 Canadian companies are examined to investigate the efficiency of monitoring by banks facing lender environmental liability. Market reaction to the announcement of bank debt to 'environmental' firms is more positive and significant than for 'non-environmental' firms and, for firms in industries with a higher likelihood of experiencing spill events, is more positive and significant, reinforcing earlier results that establish a relationship between specific loan/borrower characteristics and announcement period excess returns and providing further evidence on the 'uniqueness' of bank loans by demonstrating the superior ability of banks to monitor corporate borrowers exposed to environmental liability.  相似文献   
57.
58.
K.S. Larsen 《Futures》2003,35(2):163-167
Relations between rich and poor (across and within countries) appeared in some questions in Images; there were clear differences between what the powerful and the powerless hoped and expected from the future. This is compared with what actually happened and a deeper analysis is made of ‘power’ as an organizing concept. It turned out that the pessimism associated with powerlessness tended to make better predictions.  相似文献   
59.
This paper employs a latent variable approach to isolate the effects of changing tastes on the share of total meat expenditure on different categories of meat products in Greece during the period 1965–1995. We find that changes in the relative expenditure on different categories of meat cannot be explained by changes in the relative prices of the different meat products and increased expenditure alone. For pork products in particular, the increase in the share of expenditure has been greater than would be expected as a result of the relative fall in their price. The increase can therefore be associated with changes in taste. This finding is of general interest to those conducting empirical research into consumer behaviour both in economies where there have been significant changes in patterns of food consumption, and where, as in the case of many less industrialised economies, rapid structural changes in food consumption patterns are still to come. It is also of importance to policy makers in assessing die effectiveness of advertising or promotional campaigns in influencing longer term changes in consumer preferences for different products.  相似文献   
60.
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