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   138588篇
  免费   3199篇
  国内免费   2篇
财政金融   26087篇
工业经济   11648篇
计划管理   22023篇
经济学   29756篇
综合类   1494篇
运输经济   955篇
旅游经济   2487篇
贸易经济   23707篇
农业经济   6166篇
经济概况   17212篇
信息产业经济   8篇
邮电经济   246篇
  2021年   836篇
  2020年   1615篇
  2019年   2383篇
  2018年   2416篇
  2017年   2568篇
  2016年   2747篇
  2015年   2077篇
  2014年   3389篇
  2013年   15223篇
  2012年   4219篇
  2011年   4289篇
  2010年   3793篇
  2009年   4390篇
  2008年   3984篇
  2007年   3340篇
  2006年   3590篇
  2005年   3601篇
  2004年   3154篇
  2003年   2925篇
  2002年   2889篇
  2001年   2663篇
  2000年   2608篇
  1999年   2494篇
  1998年   2338篇
  1997年   2401篇
  1996年   2284篇
  1995年   2063篇
  1994年   2074篇
  1993年   2055篇
  1992年   2121篇
  1991年   2003篇
  1990年   1869篇
  1989年   1703篇
  1988年   1639篇
  1987年   1637篇
  1986年   1742篇
  1985年   2506篇
  1984年   2369篇
  1983年   2180篇
  1982年   2032篇
  1981年   1970篇
  1980年   1957篇
  1979年   1873篇
  1978年   1671篇
  1977年   1644篇
  1976年   1396篇
  1975年   1296篇
  1974年   1196篇
  1973年   1187篇
  1972年   903篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
992.
Kidnapped     
Serafini MW 《National journal》1997,29(12):568-571
Recent battle cries to boost health care coverage for children might suggest help is on the way. Yet as politicians tout their new-found generosity, they've also been snatching away some government money for kids.  相似文献   
993.
994.
995.
The plurality of languages and ethnicities, the geographic fragmentation, the predominant Roman Catholic religion, together with the still relatively short experience in nationhood account for a very peculiar understanding of "business ethics" in the Philippines. The rapid growth and liberalization of the economy, coupled with the inequitable distribution of wealth, the destruction of the environment and corruption are the main ethical concerns. Businesspersons and the academe endeavor to find creative solutions for these unique challenges.  相似文献   
996.
997.
"The proper use of demographic information can add significantly to the ability to analyze and forecast economic activity. With housing, short-run forecasting is difficult and long-term forecasting impossible without considering changing demographic factors. Combining detailed demographic analysis with sound structural econometric modeling of the cyclical factors underlying the demand for and the supply of housing has resulted in significantly more accurate analyses and forecasts of the [U.S.] housing market."  相似文献   
998.
Management-Science and Business-Ethics   总被引:3,自引:0,他引:3  
Many leading management scientists have advocated ethicalism: the incorporation of social and ethical concerns into traditional "rational" OR-MS techniques and management decisions. In fact, elementary forms of decision analysis can readily be augmented, using ethical theory, in ways that sweep in ethical issues. In addition, alternative conceptual models of Decision-Analysis, Game-Theory and Optimality are now available, all of which have brought OR-MS and Business-Ethics into a closer alignment.  相似文献   
999.
"The U.S. economy experienced significant increases in the degree of income inequality over the past two decades.... In this paper we consider the effects of race, age, female headship, and college education on the distribution of family income by developing a multivariate methodology that allows us to gauge the influence of one factor while holding other determinants of family incomes constant. Over the period studied we find that race had only a minor effect on the overall size distribution of income. Age had a somewhat greater effect than race. In contrast, the impact of female heads and college education were quite substantial. The multivariate estimates reveal that the effects of female heads and college education both increase the Gini to a much greater extent than the progressivity of federal income taxes decreases it. The effects of college education and female headed families on inequality have grown larger across time, while the influence of age has declined. We find that the effects of race on inequality have changed little over the 1976 to 1989 period."  相似文献   
1000.
Determinants of internal and external R&D: Some Dutch evidence   总被引:1,自引:0,他引:1  
Summary Innovating firms can choose to engage in either internal or external R&D, or in both. In the current study, we shall examine internal and external R&D separately to determine empirically the market structure characteristics explaining the external R&D share and the differences in market structure determinants between internal and external R&D. Our results indicate that a government policy that aims at stimulating technological progress by offering external research facilities is particularly interesting for smaller, capital-intensive firms operating in less concentrated markets.We would like to thank Alfred Kleinknecht for providing the R&D data and Kees Bakker and Yvonne Prince for providing the market structure data. We thank Alfred Kleinknecht, Bart Nooteboom and an anonymous referee for their comments and suggestions We acknowledge a research grant from the Stichting KMO Fonds.  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