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   31638篇
  免费   416篇
  国内免费   1篇
财政金融   5264篇
工业经济   1926篇
计划管理   5174篇
经济学   7325篇
综合类   652篇
运输经济   172篇
旅游经济   268篇
贸易经济   7056篇
农业经济   739篇
经济概况   2857篇
信息产业经济   45篇
邮电经济   577篇
  2023年   107篇
  2021年   128篇
  2020年   238篇
  2019年   318篇
  2018年   2629篇
  2017年   2441篇
  2016年   1555篇
  2015年   339篇
  2014年   477篇
  2013年   1807篇
  2012年   910篇
  2011年   2379篇
  2010年   2225篇
  2009年   1971篇
  2008年   1860篇
  2007年   2225篇
  2006年   429篇
  2005年   670篇
  2004年   739篇
  2003年   819篇
  2002年   554篇
  2001年   332篇
  2000年   334篇
  1999年   237篇
  1998年   273篇
  1997年   245篇
  1996年   251篇
  1995年   216篇
  1994年   218篇
  1993年   213篇
  1992年   258篇
  1991年   240篇
  1990年   190篇
  1989年   167篇
  1988年   158篇
  1987年   196篇
  1986年   205篇
  1985年   267篇
  1984年   290篇
  1983年   267篇
  1982年   235篇
  1981年   234篇
  1980年   229篇
  1979年   235篇
  1978年   150篇
  1977年   143篇
  1976年   104篇
  1975年   131篇
  1974年   95篇
  1973年   96篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
41.
42.
"This paper describes the methodology used to incorporate AIDS mortality in recently revised World Bank population projections....The paper first reviews different approaches for projecting AIDS and its demographic consequences. This is followed by a summary of an epidemiological model that simulates the spread of HIV used in this analysis, and a demographic model that translates mortality from AIDS into population outcomes. These models are then used in a set of simulations, from which the effect of current HIV prevalence on projected future mortality is extracted. Finally, the extracted equations linking current HIV prevalence with future mortality indicators are applied to sub-Saharan countries with a measurable level of current HIV prevalence."  相似文献   
43.
This study is concerned with one aspect of the family cycle, namely, the transition from young married to young married with small children. The focus is on developing models to forecast entries into this latter stage for the purpose of marketing research. "Using ordinary least squares, forecasting models were estimated for (1) total number of first births, (2) number of white first births, and (3) number of nonwhite first births." Models are estimated for both the United States and California using data from official sources.  相似文献   
44.
ABSTRACT . In this article, Loren Lomasky begins with a firsthand account of some of the people he interacted with at the Center for the Study of Public Choice in Blacksburg and some of what he learned there. Aside from the revealing personal anecdotes, we learn something of the culture clash he experienced as a visiting fellow at the Center and about his introduction to intellectual activity as “blood sport.” Lomasky then reviews some of the strengths and weaknesses of public choice theory from a philosophical point of view and offers some suggestions. These primarily concern the theory's narrow focus on the material nature of interests. Finally, Lomasky offers techniques for including moral interests in the deliberations of decision makers.  相似文献   
45.
In recent years there has been a growing number of input-output models of economies ranging in scale from the rural to the national. While offering invaluable insights into the interaction of sectors within an economy, the input-output model suffers from the fact that its coefficient values are altered over time due particularly to technological change. Two of the prominent techniques designed to update these technical coefficients, the RAS and linear programming methods, are compared herein with regard to changes in U.S. national coefficients between 1963 and 1967. Suggestions for improvements to the latter method are outlined.  相似文献   
46.
Serwer AE 《Fortune》1994,130(3):42-5, 48-51, 54 passim
  相似文献   
47.
48.
Success in our respective business environments is not totally dependent on technical expertise; we must be able to also effectively interact with people. The necessity of successful leadership is assumed; however, we often fail to recognize the value of strategically subordinating ourselves to others. Both roles must be emphasized with the knowledge that preferred individual styles are valid.  相似文献   
49.
Pharmaceutical insurance applies to drugs which are approved by Swedish licensing authorities and are marketing in Sweden. This paper reviews the pharmaceutical insurance.  相似文献   
50.
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