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   35638篇
  免费   760篇
财政金融   6251篇
工业经济   2008篇
计划管理   5785篇
经济学   8443篇
综合类   627篇
运输经济   220篇
旅游经济   338篇
贸易经济   7812篇
农业经济   815篇
经济概况   3470篇
信息产业经济   46篇
邮电经济   583篇
  2023年   178篇
  2022年   132篇
  2021年   203篇
  2020年   393篇
  2019年   497篇
  2018年   2875篇
  2017年   2709篇
  2016年   1836篇
  2015年   504篇
  2014年   698篇
  2013年   2724篇
  2012年   1111篇
  2011年   2551篇
  2010年   2416篇
  2009年   2110篇
  2008年   2009篇
  2007年   2248篇
  2006年   534篇
  2005年   776篇
  2004年   796篇
  2003年   897篇
  2002年   592篇
  2001年   395篇
  2000年   381篇
  1999年   323篇
  1998年   369篇
  1997年   295篇
  1996年   259篇
  1995年   239篇
  1994年   257篇
  1993年   259篇
  1992年   282篇
  1991年   270篇
  1990年   212篇
  1989年   198篇
  1988年   173篇
  1987年   171篇
  1986年   186篇
  1985年   260篇
  1984年   273篇
  1983年   259篇
  1982年   230篇
  1981年   204篇
  1980年   180篇
  1979年   172篇
  1978年   165篇
  1977年   137篇
  1976年   130篇
  1975年   143篇
  1974年   109篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
Household surveys provide data that is used for identifying and measuring the poverty status of households and individuals. However, carrying out such surveys is expensive, especially in poor developing countries. Thus it is important to make maximum use of the available survey data in developing countries, especially in sub‐Saharan Africa, where such data are expensive to collect and analyse. This paper develops a simple method for using poverty indices derived from survey data for a given year, to predict poverty rates for subsequent periods without having to conduct a new household survey. We illustrate the workings of the method with data from Kenyan household surveys for 1994 and 1997.  相似文献   
72.
73.
Previous work shows that establishments with higher proportions of women are more likely to use piece rates but that individual women are less likely to receive performance pay. We present a model in which lower expected tenure and labor force attachment are positively associated with piece rates but are negatively associated with other forms of performance pay. Analysis of the National Longitudinal Survey of Youth (NLSY) confirms that women are more likely to be paid piece rates and simultaneously less likely to be paid commissions and bonuses.  相似文献   
74.
75.
76.
本文介绍了网络预算管理是如何有效地克服传统预算方法的缺点,通过有效的控制去解决企业预算管理工作中的实际问题,指出了该预算方法能大大提高工作效率和管理效率。  相似文献   
77.
78.
The performance of service industries in Canada has been lower than that of good industries over the last four decades, with noticeable exceptions such as for railways and telecommunication carriers. Service industries were less economically (and technically) efficient in that they generated less output value (quantity) per hour worked (level and growth) or per combined unit of labour and capital (multifactor productivity growth) than good industries. The relative output price of services declined slightly over time compared with goods. At the disaggregated level, changing relative output prices were substantial and proved to be an important factor explaining the relative satisfactory economic performance of many service industries despite their low technical performance. Nevertheless, the output share of service industries increased over that period, sustained, mainly, by the growing recourse of all firms to outsourcing of services.  相似文献   
79.
Construction kits have played a significant part in nurturing the growth and development of the minds and manipulation-based skills of children (and adults) in formal and non-formal education settings. These kits have origins rooted in the representation of the built world and now have a diversity of form and function, including technical versions with moving parts. This article examines some of the historically based ideas that lie behind the role that kits may have in terms of physical modelling. The article traces the transformation of kits from simple bricks and blocks into more complicated pieces for space-filling and achieving the transfer of forces and motion. This transformation occurred during the Victorian era when the influence of the ideas of educationalists and, perhaps rather strangely, exponents of early aviation, played major roles in determining the diversity of forms of construction kit and modelled possibilities that are now to be seen in classrooms and homes. The article ends with a review of some of the lessons from the past and present that will need to be considered in relation to concrete modelling in schools for the future. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
80.
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