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   4889篇
  免费   986篇
财政金融   831篇
工业经济   403篇
计划管理   1144篇
经济学   1198篇
综合类   1篇
运输经济   109篇
旅游经济   53篇
贸易经济   1333篇
农业经济   290篇
经济概况   513篇
  2023年   8篇
  2022年   7篇
  2021年   86篇
  2020年   190篇
  2019年   516篇
  2018年   256篇
  2017年   412篇
  2016年   376篇
  2015年   391篇
  2014年   391篇
  2013年   637篇
  2012年   407篇
  2011年   378篇
  2010年   320篇
  2009年   226篇
  2008年   239篇
  2007年   187篇
  2006年   167篇
  2005年   140篇
  2004年   120篇
  2003年   105篇
  2002年   100篇
  2001年   90篇
  2000年   58篇
  1999年   17篇
  1998年   8篇
  1997年   6篇
  1996年   3篇
  1995年   4篇
  1994年   3篇
  1992年   1篇
  1991年   1篇
  1990年   3篇
  1989年   1篇
  1987年   4篇
  1986年   1篇
  1984年   1篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1979年   1篇
  1977年   1篇
  1976年   1篇
  1975年   4篇
  1974年   1篇
  1973年   2篇
  1972年   2篇
排序方式: 共有5875条查询结果,搜索用时 0 毫秒
971.
Food labels provide measurable benefits by improving diet quality of Americans by as much as four to six points on a 100‐point Healthy Eating Index scale. Among nutritional panels, serving sizes, nutrient content claims, list of ingredients, and health claims, the use of health claims on food labels provides the highest level of improvement in diet quality. The data source for this analysis is the 1994 to 1996 Continuing Survey of Food Intakes for Individuals (CSFII) and the accompanying Diet and Health Knowledge Survey (DHKS).  相似文献   
972.
This study demonstrates that education level and warning vocabulary affect consumer reactions to warnings. Consumers who did not complete high school were not able to comprehend warnings that contained difficult vocabulary as well as warnings with simple words. They perceived products that carry warnings with simple words as safer than products labeled with warnings containing difficult words. Finally, consumers with more education were found to have more negative attitudes toward warnings with difficult words than warnings with simple words despite understanding the warnings equally well.  相似文献   
973.
974.
975.
Are currency crises caused by manias and panics in financial markets, or by unsustainable deteriorations in domestic macroeconomic conditions? This question is explored in the context of the recent Asian currency crisis. The theoretical concept of vulnerability is used to identify three early‐warning indicators of susceptibility to a currency crisis: rapid accumulation of mobile capital; domestic lending booms; and overvalued exchange rates. It is shown that the crisis and noncrisis countries of Asia may be distinguished empirically, using these indicators, over the decade preceding the crisis. This exercise provides convincing evidence that the crisis emanated largely from domestic macroeconomic conditions.  相似文献   
976.
977.
In this article, we provide a detailed characterization of the intraday return volatility in gold futures contracts traded on the COMEX division of the New York Mercantile Exchange. The approach allows the study of intraday patterns, interday ARCH effects, and announcement effects in a coherent framework. We show that the intraday patterns exert a profound impact on the dynamics of return volatility. Among the 23 U.S. macroeconomic announcements, we identify employment reports, gross domestic product, consumer price index, and personal income as having the greatest impact. Finally, by appropriately filtering out the intraday patterns, we find that the high‐frequency returns reveal long‐memory volatility dependencies in the gold market, which have important implications on the pricing of long‐term gold options and the determination of optimal hedge ratios. © 2001 John Wiley & Sons, Inc. Jrl Fut Mark 21:257–278, 2001  相似文献   
978.
Mass media is one means by which consumers learn how to behave as consumers. Consumers’ beliefs about minorities as consumers are also influenced by mass media, and the impact is likely highest among young children. A content analysis of 813 commercials in children's television programming reveals that while Caucasians continue to be the predominant models in terms of numbers and in the types of roles they play, the numerical representation of minorities, especially Blacks, has improved. However, the study found that minorities are more likely than Caucasians to have minor roles and to be portrayed in certain product categories, settings, and relationships. Societal impacts and implications for minority consumers are discussed.  相似文献   
979.
The focus of this article is how a non‐zero risk premium affects an economic agent's optimal hedging decision when exposed to a nonmarketed event. The analysis is not confined to the optimal use of one particular hedging instrument, rather, the optimal payoff based on the agent's preferences is derived. We show, for various preferences, how the size of a risk premium affects the degree of nonlinearity in the optimal hedging instrument. This result is in contrast to known results for contingent exposure in the case of a zero risk premium. We demonstrate an inefficacy of the approach of confining the analysis to one particular hedging instrument in the case of standard exposure. © 2000 John Wiley & Sons, Inc. Jrl Fut Mark 20:823–841, 2000  相似文献   
980.
Consumers face an increasing availability of information on health and nutritional aspects of foods, especially on food package labels. Previous research has identified that this information is positively valued, but the effect of presenting several items of information simultaneously is not well understood. We conduct a choice experiment to identify the effects of multiple health and nutrition information labels for two products representing a healthy and less healthy food choice. Although our consumers attach positive utility to most of the individual labels evaluated here, the simultaneous presence of more than one label only has positive impact on utility in one of nine possible cases. Therefore, promotion of multiple labels should not be considered beneficial a priori either from a regulatory or business perspective. In addition, results show that consumers show a higher willingness to pay for nutrition and health labels for less healthy products.  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