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   45612篇
  免费   613篇
财政金融   7944篇
工业经济   2880篇
计划管理   7438篇
经济学   10402篇
综合类   738篇
运输经济   189篇
旅游经济   492篇
贸易经济   8832篇
农业经济   1464篇
经济概况   5184篇
信息产业经济   44篇
邮电经济   618篇
  2021年   179篇
  2020年   287篇
  2019年   411篇
  2018年   2699篇
  2017年   2495篇
  2016年   1669篇
  2015年   485篇
  2014年   679篇
  2013年   2938篇
  2012年   1214篇
  2011年   2687篇
  2010年   2434篇
  2009年   2244篇
  2008年   2292篇
  2007年   2531篇
  2006年   787篇
  2005年   1037篇
  2004年   1108篇
  2003年   1182篇
  2002年   853篇
  2001年   687篇
  2000年   665篇
  1999年   536篇
  1998年   550篇
  1997年   508篇
  1996年   525篇
  1995年   460篇
  1994年   508篇
  1993年   513篇
  1992年   482篇
  1991年   505篇
  1990年   460篇
  1989年   382篇
  1988年   394篇
  1987年   386篇
  1986年   412篇
  1985年   578篇
  1984年   534篇
  1983年   539篇
  1982年   521篇
  1981年   449篇
  1980年   441篇
  1979年   456篇
  1978年   382篇
  1977年   348篇
  1976年   275篇
  1975年   268篇
  1974年   251篇
  1973年   241篇
  1972年   197篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
41.
The purpose of this study was to assess the basis behavior of the Live Cattle Futures contract at the Chicago Mercantile Exchange (CME) before and after the 1995 contract changes. Additionally, an alternative method of basis calculation utilizing weighted mean futures prices versus settlement futures prices was compared to determine which method provides a better representation of the basis level. Within a regression model with heteroskedascity error framework, we found that the level of nearby basis in the period after June 1995 has shifted lower and the average monthly open interest of net commercial long positions has substantially increased after the contract modifications. These empirical results are consistent with the notion that more long activity entered the market in response to the contract modifications. Additionally, an alternative (new) measure of basis calculation (cash price minus weighted mean futures price) produced similar results to two other commonly used measures. In conclusion, the 1995 contract changes have neither increased nor decreased the volatility of live cattle basis. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:557–590, 2004  相似文献   
42.
43.
44.
45.
The notion that prices impound a wide array of information, including market expectations, has led to earnings forecast models conditioned on prices. Yet, presumably, analysts' forecasts capture both public information and certain private information not previously impounded in prices. Accordingly, price-based models are seemingly an inefficient, and less effective, source of expecta-tions. This article investigates this hypothesis using financial analysts', price-based, and naive forecasts. Results indicate that analysts' forecasts (1) are at least as accurate as price-based and naive models, and (2) yield better expectations for market tests relating returns and earnings. These inferences are robust across different information environments. The evidence suggests that analysts either possess private information or are more effective information processors, or both.  相似文献   
46.
Cost of equity estimates are compared for three pricing models: the traditional local CAPM, the single (market) factor global CAPM, and the two‐factor global CAPM, with both market and currency index factors. For 2989 US stocks, the average difference in the cost of equity estimates is about 48 basis points between the local CAPM and the single‐factor global CAPM, and is about 61 basis points between the two global models. For 70 developed‐market ADRs, the corresponding average differences are 76 and 47 basis points, respectively. For 48 emerging‐market ADRs, the corresponding average differences are 57 and 70 basis points.  相似文献   
47.
48.
49.
An interest charge is made up of an award for waiting known as the real rate of interest, a premium for risk and compensation for transaction costs. Where inflation exists the lender seeks further compensation. In order to understand the composition and evolution of different versions of the usury prohibition it is necessary to ask which components of an interest charge are prohibited by each version. The Judaic prohibition has two aspects which are of particular interest to business historians and students of usury. First, the general rule is that a reward for waiting is prohibited. This focuses on the time-based part of interest charge. Second, interest is prohibited because it amounts to placing a stumbling block before the blind. This focuses on the typical gullibility of the borrower confronted by a more expert, better funded lender. Economics confirms and enriches our understanding of these important aspects of the prohibition. They achieve this by increasing our understanding of two facts: first, that the borrower is a gullible individual subject to irrational and inconsistent behaviour; and, second, that this behaviour relates to the waiting aspect of interest which is proscribed in the prohibition. How far these insights apply to other civilisations' prohibition, particularly those which derive from the Judaic prohibition, merits further study; so also do the ethical lessons of the Mosaic rules for a globalised society based on capitalism.  相似文献   
50.
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