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   12130篇
  免费   244篇
财政金融   2314篇
工业经济   943篇
计划管理   1870篇
经济学   2636篇
综合类   177篇
运输经济   71篇
旅游经济   147篇
贸易经济   1734篇
农业经济   695篇
经济概况   1773篇
信息产业经济   2篇
邮电经济   12篇
  2020年   106篇
  2019年   147篇
  2018年   187篇
  2017年   189篇
  2016年   174篇
  2015年   119篇
  2014年   164篇
  2013年   1130篇
  2012年   257篇
  2011年   306篇
  2010年   274篇
  2009年   328篇
  2008年   313篇
  2007年   259篇
  2006年   244篇
  2005年   278篇
  2004年   223篇
  2003年   256篇
  2002年   203篇
  2001年   245篇
  2000年   234篇
  1999年   232篇
  1998年   223篇
  1997年   227篇
  1996年   231篇
  1995年   228篇
  1994年   222篇
  1993年   185篇
  1992年   209篇
  1991年   224篇
  1990年   187篇
  1989年   152篇
  1988年   156篇
  1987年   130篇
  1986年   176篇
  1985年   242篇
  1984年   245篇
  1983年   239篇
  1982年   212篇
  1981年   228篇
  1980年   192篇
  1979年   207篇
  1978年   177篇
  1977年   158篇
  1976年   135篇
  1975年   134篇
  1974年   129篇
  1973年   97篇
  1972年   102篇
  1971年   92篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
The United States (US) exports more than US$6 billion in agricultural commodities to the European Union(EU) each year, but one issue carries the potential to diminish this trade: use of biotechnology in food production. The EU has adopted more stringent policies towards biotechnology than the US. Understanding differences in European and American policies towards genetically modified (GM) foods requires a greater understanding of consumers’ attitudes and preferences. This paper reports results from the first large‐scale, cross‐Atlantic study to analyse consumer demand for genetically modified food in a non‐hypothetical market environment. We strongly reject the frequent if convenient assumption in trade theory that consumer preferences are identical across countries: the median level of compensation demanded by English and French consumers to consume a GM food is found to be more than twice that in any of the US locations. Results have important implications for trade theory, which typically focuses on differences in specialization, comparative advantage and factor endowments across countries, and for on‐going trade disputes at the World Trade Organization.  相似文献   
93.
We analyze the potential competitive effects of the proposed Basel II capital regulations on US bank credit card lending. We find that bank issuers operating under Basel II will face higher regulatory capital minimums than Basel I banks, with differences due to the way the two regulations treat reserves and gain-on-sale of securitized assets. During periods of normal economic conditions, this is not likely to have a competitive effect; however, during periods of substantial stress in credit card portfolios, Basel II banks could face a significant competitive disadvantage relative to Basel I banks and nonbank issuers.  相似文献   
94.
95.
96.
97.
98.
Agriculture's importance in the process of economic growth highlights the role of sustained advances in farm production practices by improving the quantity and quality of farm products. In this context, investment in improved agricultural technology continues to be an important avenue of assistance to the developing countries. However, the increased resource pressures facing both aid donors and recipients have emphasised the need for the prior assessment of the potential benefits of aid projects to assist effective aid planning and management. Here, the main requirements are to establish viable project goals for translation into effective programmes, to predict the likely project impacts, and to evaluate the potential benefits and costs of adopting the project's outcomes. An ex ante assessment of assistance in controlling a major livestock disease in Indonesia's eastern islands is described in this paper. The annual net benefits from controlling this disease ranged between $A0.45 and $A2.5 million according to the mortality rate reduction achieved. The benefits were shared between beef producers and consumers according to the market elasticity conditions assumed.  相似文献   
99.
JOHN W. BUDD 《劳资关系》1996,35(2):245-260
Opponents of U.S. and Canadian strike replacement legislation contend that restricting the use of strike replacements significantly alters bargaining power and increases strike activity. This article uses data on Canadian manufacturing collective-bargaining agreements to investigate these hypotheses. Although a general ban on strike replacements is found to be associated with longer strikes, little evidence is found to suggest that banning permanent strike replacements significantly influences strike incidence, strike duration, or negotiated wages.  相似文献   
100.
The Chicago Board Options Exchange concurrently listed European‐style and American‐style options on the Standard and Poor's 500 Index from April 2, 1986 through June 20, 1986. This unique time period allows for a direct measurement of the early exercise premium in American‐style index options. In this study, using ask quotes, we find average early exercise premiums ranging from 5.04 to 5.90% for calls, and from 7.97 to 10.86% for puts. Additionally, we are able to depict a potentially useful functional form of the early exercise premium. As in previous studies, we find some instances of negative early exercise premiums. However, a trading simulation shows that traders must be able to trade within the bid–ask spread to profit from these apparent arbitrage opportunities. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:287–313, 2003  相似文献   
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