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   3301篇
  免费   182篇
财政金融   608篇
工业经济   229篇
计划管理   596篇
经济学   798篇
综合类   31篇
运输经济   49篇
旅游经济   83篇
贸易经济   636篇
农业经济   176篇
经济概况   252篇
信息产业经济   2篇
邮电经济   23篇
  2023年   23篇
  2022年   19篇
  2021年   45篇
  2020年   68篇
  2019年   106篇
  2018年   130篇
  2017年   164篇
  2016年   128篇
  2015年   92篇
  2014年   158篇
  2013年   385篇
  2012年   155篇
  2011年   188篇
  2010年   148篇
  2009年   185篇
  2008年   147篇
  2007年   123篇
  2006年   103篇
  2005年   89篇
  2004年   66篇
  2003年   80篇
  2002年   76篇
  2001年   53篇
  2000年   48篇
  1999年   39篇
  1998年   52篇
  1997年   52篇
  1996年   47篇
  1995年   33篇
  1994年   39篇
  1993年   42篇
  1992年   36篇
  1991年   19篇
  1990年   24篇
  1989年   22篇
  1988年   17篇
  1987年   13篇
  1986年   13篇
  1985年   32篇
  1984年   27篇
  1983年   20篇
  1982年   15篇
  1981年   21篇
  1980年   17篇
  1979年   23篇
  1978年   13篇
  1977年   19篇
  1976年   12篇
  1975年   11篇
  1971年   7篇
排序方式: 共有3483条查询结果,搜索用时 62 毫秒
991.
The paper addresses consumers' shopping lists. The current study is based on a survey of 871 lists collected at retail grocery stores. Most items on shopping lists appear on the product category level rather than the brand level. The importance of the brand level varies considerably across product categories. An association between the frequency of a brand's appearance on lists and the amount of money spent on advertising the brand could not be found. A strong link between brands, prices and store names is revealed. Price in the majority of cases refers to brands rather than to product categories. The paper ends with a discussion and with suggestions for future research.  相似文献   
992.
South Korea is arguably the premier development success story of the last half century. Rapid growth coincided with extensive state interventions in the economy, and considerable controversy exists as to how much this performance should be credited to the country's state‐led development strategy and to what extent the lessons from that experience might be portable or applied elsewhere. The salience of this issue has grown as South Korea has become a more important provider of development assistance and advice. Now the country faces challenges in maintaining its superior economic performance, notably interrelated problems revolving around the country's demographics, long‐term fiscal position, and lagging productivity in the services sector domestically, and a taxing environment externally. Finally, the country confronts scenarios involving potential instability, collapse, and/or absorption of its neighbor, North Korea.  相似文献   
993.
Abstract Establishing existence and characterizing equilibria are both important achievements in the study of auctions. However, we recognize that equilibria existence results form the basis for well accepted characterizations. In this survey, we review the landmark results and highlight open questions regarding equilibria existence and characterizations in auctions. In addition, we review the standard assumptions underlying these results, and discuss the suitability of the Nash equilibrium solution concept. We focus our review on single‐object auctions, but also review results in multi‐unit, divisible, combinatorial and double auctions.  相似文献   
994.
The resource‐based view on firm diversification, subsequent to Penrose ( 1959 ), has focused primarily on the fungibility of resources across domains. We make a clear analytical distinction between scale free capabilities and those that are subject to opportunity costs and must be allocated to one use or another, thereby shifting the discourse back to Penrose's ( 1959 ) original argument regarding the stock of organizational capabilities. The existence of resources and capabilities that must be allocated across alternative uses implies that profit‐maximizing diversification decisions should be based upon the opportunity cost of their use in one domain or another. This opportunity cost logic provides a rational explanation for the divergence between total profits and profit margins. Firms make profit‐maximizing decisions to increase total profit via diversification when the industries in which they are currently competing become relatively mature. Due to the spreading of these capabilities across more segments, we may observe that firms' profit‐maximizing diversification actions lead to total profit growth but lower average returns. The model provides an alternative explanation for empirical observations regarding the diversification discount. The self‐selection effect noted in recent work in corporate finance may not be indicative of inferior capabilities of diversifying firms but of the limited opportunity contexts in which these firms are operating. Copyright © 2010 John Wiley & Sons, Ltd.  相似文献   
995.
We report experiments studying mixed strategy Nash equilibria that are theoretically stable or unstable under learning. The Time Average Shapley Polygon (TASP) predicts behavior in the unstable case. We study two versions of Rock-Paper-Scissors that include a fourth strategy, Dumb. The unique Nash equilibrium is identical in the two games, but the predicted frequency of Dumb is much higher in the game where the NE is stable. Consistent with TASP, the observed frequency of Dumb is lower and play is further from Nash in the high payoff unstable treatment. However, Dumb is played too frequently in all treatments.  相似文献   
996.
Do economists reach a conclusion on a given policy issue? One way to answer the question is to survey economists at large. Another is to look at the published judgments of economists who have gone on the record. Relative to an anonymous survey, going on the record makes for much greater accountability, and presumably more personal responsibility. I discuss 11 studies of economists’ published judgments. Several of them show greater support for liberalization than found among economists at large. This is offered as evidence of what I call the forsaken‐liberty syndrome. I discuss the nature of this test of such syndrome and point to some of the larger questions to which it relates.  相似文献   
997.
This paper employs the technique of variance decomposition and impulse response functions to examine the dynamic nature of stock market volatility relationships among six major countries during the pre, around, and post October 1987 crash period. During the period around the crash, the US stock market volatility explains much better the variations of the stock market volatility of Australia, Hong Kong, Japan, Singapore and the UK. Our findings clearly indicate that the crash originated in the US and then spread to other major stock markets.  相似文献   
998.
999.
Summary Many programs in the United States have undertaken to show the benefits to students of integrating academic disciplines. The TEC-Lab project, however, is unique among them because of its innovative approach. First, the TEC-Lab students are in senior high school, grades 9 to 12, while most innovative efforts are concentrated at the elementary and middle school levels. Second, the TEC-Lab approach uses technology as a means of meeting the usual academic requirements, rather than attempting to integrate the other academic areas into technology. The difference between these two approaches is subtle but profound.The first semester of the project was fraught with problems as equipment deliveries were late and installation difficulties delayed implementation even further. There was too little time to provide adequate teacher preparation. The students' lack of familiarity with the technologies in the TEC-Lab complicated implementation.It is actually remarkable that these serious implementation problems apparently had little negative effect on the achievement levels of the students in the project. The lack of significant differences between the TEC-Lab and comparison classes in physical science and geometry in January, 1992 gave an early indication that immersion in the TEC-Lab environment was not disadvantageous to students. The comparisons made in May, 1992 of all TEC-Lab and comparison classes identified only one significant difference in achievement levels, when the TEC-Lab technology class achieved significantly better than the comparison technology class. This difference may well be explained by the overlap between the subject matter of the course and the technologies in use in the TEC-Lab.The changes in student attitudes towards technology during the academic year are particularly provocative. Participation in the TEC-Lab project, whether in one of the TEC-Lab classes or in one of the comparison classes taught by the TEC-Lab teachers, resulted in positive changes in attitude toward technology. The shift was consistent, appearing in each of the factors as well as the overall attitude scale.  相似文献   
1000.
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