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   30107篇
  免费   735篇
财政金融   5425篇
工业经济   2153篇
计划管理   5186篇
经济学   6865篇
综合类   310篇
运输经济   188篇
旅游经济   489篇
贸易经济   4805篇
农业经济   1429篇
经济概况   3901篇
邮电经济   91篇
  2021年   180篇
  2020年   290篇
  2019年   405篇
  2018年   610篇
  2017年   604篇
  2016年   579篇
  2015年   422篇
  2014年   639篇
  2013年   2964篇
  2012年   830篇
  2011年   907篇
  2010年   742篇
  2009年   865篇
  2008年   900篇
  2007年   790篇
  2006年   730篇
  2005年   682篇
  2004年   674篇
  2003年   661篇
  2002年   610篇
  2001年   616篇
  2000年   617篇
  1999年   526篇
  1998年   540篇
  1997年   507篇
  1996年   509篇
  1995年   466篇
  1994年   505篇
  1993年   514篇
  1992年   478篇
  1991年   507篇
  1990年   458篇
  1989年   384篇
  1988年   390篇
  1987年   385篇
  1986年   402篇
  1985年   578篇
  1984年   532篇
  1983年   524篇
  1982年   504篇
  1981年   448篇
  1980年   429篇
  1979年   444篇
  1978年   381篇
  1977年   341篇
  1976年   273篇
  1975年   266篇
  1974年   243篇
  1973年   235篇
  1972年   195篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
141.
In this paper we theorize that cognitive ethical orientations play an influential role in the beliefs of consumers when faced with different ranges of moral dilemmas. We examine this proposition in transitional Eastern Europe and results from a sample of 210 Romanian consumers suggest that Romanians are faced with a moral situation where low levels of Machiavellianism and high levels of idealism appear to relate to a higher ethical concern about passively benefiting at the expense of others.  相似文献   
142.
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   
143.
144.
Explaining Firm Employment Growth: Does Location Matter?   总被引:1,自引:0,他引:1  
This paper addresses the question to what extent the location of a firm can be regarded as having an influence on the performance of a firm as measured by employment growth. While in theory it is widely acknowledged that `location' should be considered as a relevant growth determinant, empirical research has so far mainly focused on firm-internal factors. The question raised in this paper is empirically verified by means of an econometric model based on a data set of circa 35,000 establishments located in the northern part of the Netherlands during the period 1994–1999. The model includes several measurements of location characteristics like the population level and growth, employment growth, spatial specialisation and cluster indicators, type of enterprise zone, and accessibility while controlling for firm-associated factors such as size, age, and business activity. Based on the fact that we find several significant coefficients we conclude that `location matters' but that the effect differs by type of economic activity.  相似文献   
145.
THE SQUARED ORNSTEIN-UHLENBECK MARKET   总被引:2,自引:0,他引:2  
We study a complete market containing J assets, each asset contributing to the production of a single commodity at a rate that is a solution to the squared Ornstein-Uhlenbeck (Cox-Ingersoll-Ross) SDE. The assets are owned by K agents with CRRA utility functions, who follow feasible consumption/investment regimes so as to maximize their expected time-additive utility from consumption. We compute the equilibrium for this economy and determine the state-price density process from market clearing. Reducing to a single (representative) agent, and exploiting the relation between the squared-OU and squared-Bessel SDEs, we obtain closed-form expressions for the values of bonds, assets, and options on the total asset value. Typical model parameters are estimated by fitting bond price data, and we use these parameters to price the assets and options numerically. Implications for the total asset price itself as a diffusion are discussed. We also estimate implied volatility surfaces for options and bond yields.  相似文献   
146.
147.
148.
149.
150.
J. Kol 《De Economist》2004,152(2):273-296
Jan Tinbergen's scientific writings cover six main areas of research. His articles in De Economist represent these areas; in some cases the contributions to De Economist were of a pioneering nature (business cycles, economic models, economic integration); in others De Economist was the first or even single outlet for Tinbergen's work. This article provides an overview of these contributions. The wide scope of Tinbergen's areas of research goes together with a unity in approach, the characteristics of which are: policy relevance, quantification and measurement, balance in analysis and presentation, and learning from experience. Tinbergen's articles in De Economist bear witness to this approach which at the time also met with scepticism and resistance as this overview shows. According to Houthakker, Tinbergen's main contribution may be that, amidst the pleas of interest groups and the slogans of the laity, an attempt is made that the voice of the professional economic researcher be heard. Tinbergen's work still sets an agenda for both economic research and policy making.  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