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   32774篇
  免费   352篇
财政金融   5992篇
工业经济   1955篇
计划管理   5005篇
经济学   7381篇
综合类   665篇
运输经济   101篇
旅游经济   284篇
贸易经济   7250篇
农业经济   558篇
经济概况   3309篇
信息产业经济   45篇
邮电经济   581篇
  2021年   105篇
  2020年   166篇
  2019年   265篇
  2018年   2608篇
  2017年   2372篇
  2016年   1536篇
  2015年   308篇
  2014年   384篇
  2013年   1812篇
  2012年   874篇
  2011年   2450篇
  2010年   2204篇
  2009年   1952篇
  2008年   1948篇
  2007年   2256篇
  2006年   499篇
  2005年   778篇
  2004年   864篇
  2003年   983篇
  2002年   635篇
  2001年   383篇
  2000年   363篇
  1999年   289篇
  1998年   335篇
  1997年   286篇
  1996年   292篇
  1995年   241篇
  1994年   242篇
  1993年   253篇
  1992年   266篇
  1991年   258篇
  1990年   206篇
  1989年   192篇
  1988年   168篇
  1987年   200篇
  1986年   218篇
  1985年   307篇
  1984年   264篇
  1983年   304篇
  1982年   225篇
  1981年   222篇
  1980年   231篇
  1979年   208篇
  1978年   182篇
  1977年   209篇
  1976年   186篇
  1975年   166篇
  1974年   136篇
  1973年   129篇
  1972年   91篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
82.
83.
We employ panel data as well as country-specific models to uncover empirically the determinants of current account imbalances. We find evidence of slope heterogeneity likely rendering the fixed-effect estimator inconsistent. Mean group estimation is followed to overcome the latter difficulty. Both estimation techniques are evaluated by means of in- and out-of-sample criteria. The mean group estimator outperforms the fixed-effect approach and, moreover, only three economic variables are found to impact on the current account balance significantly. These are the government budget balance, the domestic output gap and the changes of the terms of trade. We finally propose a parsimonious dynamic model of the current account, including only these variables and illustrate that it has similar predictive accuracy as country-specific benchmark models. JEL no. F32, C23, C53  相似文献   
84.
85.
86.
A survey conducted in Mississippi, Texas, Indiana, and Nebraska elicited producers' preferences for various farm policy changes. This permitted examination of the diversity of preferences that single-state studies have not allowed. Five policy choices, including deficiency payments, loan programs, crop insurance, export programs, and disaster payments were examined. Logit model results predicting producer preferences for each of the five dichotomous policy choices are reported. Explanatory variables based on expected utility theory such as risk aversion, price and yield variability, and price–yield correlation are significant in various models.  相似文献   
87.
The role of tourism is of vital economic importance, particularly for small countries with a privileged geographical location and favourable weather conditions. This paper examines the importance of tourism as a conditioning factor for higher regional growth in Portugal by employing the conditional convergence hypothesis of Barro and Sala-i-Martin, associated with the endogenous growth theory. The panel data estimation approach provides evidence of the positive impact of tourism (through the accommodation capacity) on the growth in per-capita income among the Portuguese regions, increasing the rate of convergence. Therefore, tourism can be considered as an alternative source for stimulating higher regional growth in Portugal, if the supply characteristics of this sector are improved.  相似文献   
88.
89.
90.
The demand for and supply of analysts’ opinions in this model yield an equilibrium that demonstrates how the information content of the opinions reacts to changes in exogenous parameters. The model also shows how changes in the parameters make analysts’ opinions more or less dispersed; for example, a decline in investor risk aversion, a decrease in market volatility, and an increase in information costs can lead to analysts’ opinions becoming more similar. Recognizing how exogenous factors can affect the supply and demand of analysts’ opinions gives additional insights into questions concerning what may appear to be herd behavior by analysts and also the relationship between forecast dispersion and information content. (JEL: G29, C71)  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