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   46432篇
  免费   701篇
财政金融   8028篇
工业经济   2924篇
计划管理   7507篇
经济学   10598篇
综合类   752篇
运输经济   203篇
旅游经济   517篇
贸易经济   8968篇
农业经济   1445篇
经济概况   5526篇
信息产业经济   45篇
邮电经济   620篇
  2021年   173篇
  2020年   295篇
  2019年   395篇
  2018年   2798篇
  2017年   2581篇
  2016年   1758篇
  2015年   482篇
  2014年   707篇
  2013年   3014篇
  2012年   1246篇
  2011年   2781篇
  2010年   2451篇
  2009年   2274篇
  2008年   2316篇
  2007年   2578篇
  2006年   802篇
  2005年   1043篇
  2004年   1159篇
  2003年   1247篇
  2002年   874篇
  2001年   685篇
  2000年   673篇
  1999年   536篇
  1998年   562篇
  1997年   523篇
  1996年   526篇
  1995年   472篇
  1994年   505篇
  1993年   519篇
  1992年   483篇
  1991年   509篇
  1990年   470篇
  1989年   392篇
  1988年   400篇
  1987年   393篇
  1986年   424篇
  1985年   589篇
  1984年   544篇
  1983年   550篇
  1982年   525篇
  1981年   453篇
  1980年   448篇
  1979年   457篇
  1978年   390篇
  1977年   347篇
  1976年   280篇
  1975年   269篇
  1974年   250篇
  1973年   240篇
  1972年   196篇
排序方式: 共有10000条查询结果,搜索用时 343 毫秒
111.
This paper develops and estimates models of family and sex-specific emigration, as well as the sex composition of this emigration, from 12 European source countries to the U.S. for the period 1870–1910. The models are based on the distinction between economic migrants (males, single females, and some married females) and tied or trailing migrants (females) and are estimated with panel data, including data that relate to the occupational/industrial structure of male and female economic activity in source countries. Hausman-Taylor instrumental variable estimates suggest that although both males and females responded to labor-market signals, males were more responsive than females to per capita GDP differences. Moreover, compared to the rest of Europe, Ireland, and Scandinavia were the sources of many young, single male, and female migrants, who responded strongly to gaps in economic opportunities. In fact, much of the European response to such gaps appears to be due to migrants from Ireland and Scandinavia. Females tended to originate in English-speaking countries and countries that were agriculturally oriented. Service and manufacturing jobs in source countries discouraged the migration of females relative to males. Males tended to follow recent migrants more than females, but females responded more to long-term influences as measured by stocks of migrants from their source countries who had previously settled in the U.S. Countries with high birth rates had relatively fewer female emigrants, whereas those with high rates of natural increase 20 years earlier experienced relatively more male emigration. Intact families, other family members (including family-strategy male migrants and trailing female migrants), and single males and females responded strongly to economic incentives, but the singles were most responsive followed by family-strategy males.  相似文献   
112.
113.
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   
114.
115.
116.
117.
118.
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   
119.
120.
Ohne Zusammenfassung Dipl.-Ing. (univ.) Michael Belau ist Director und Head of Rental Management Dipl.-Wirtschaftsing. (FH) Michael Schildger ist Vice President und Head of Finance Dr. Verena Sturm ist Manager Corporate Real Estate Services  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