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   13611篇
  免费   299篇
  国内免费   13篇
财政金融   2383篇
工业经济   1050篇
计划管理   2260篇
经济学   2901篇
综合类   299篇
运输经济   88篇
旅游经济   276篇
贸易经济   2457篇
农业经济   735篇
经济概况   1451篇
邮电经济   23篇
  2021年   84篇
  2020年   147篇
  2019年   217篇
  2018年   278篇
  2017年   311篇
  2016年   290篇
  2015年   204篇
  2014年   317篇
  2013年   1293篇
  2012年   356篇
  2011年   379篇
  2010年   366篇
  2009年   391篇
  2008年   442篇
  2007年   418篇
  2006年   338篇
  2005年   331篇
  2004年   293篇
  2003年   299篇
  2002年   277篇
  2001年   271篇
  2000年   275篇
  1999年   246篇
  1998年   254篇
  1997年   260篇
  1996年   260篇
  1995年   236篇
  1994年   226篇
  1993年   248篇
  1992年   235篇
  1991年   227篇
  1990年   211篇
  1989年   183篇
  1988年   143篇
  1987年   175篇
  1986年   175篇
  1985年   259篇
  1984年   269篇
  1983年   262篇
  1982年   233篇
  1981年   234篇
  1980年   198篇
  1979年   209篇
  1978年   151篇
  1977年   157篇
  1976年   135篇
  1975年   108篇
  1974年   102篇
  1973年   93篇
  1972年   66篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
This article uses matched employer-employee data for the State of Georgia to examine workers' earnings experience through the information technology (IT) sector's employment boom of the mid-1990s and bust in the early 2000s. The results show that even after controlling for pre-boom individual characteristics, transitioning out of the IT sector to a non-IT industry generally resulted in a large wage penalty. However, IT service workers who transitioned to a non-IT industry still fared better than workers who took a non-IT employment path. For IT manufacturing workers, there is no benefit to having been touched by technology, likely because of the nontransferability of manufacturing experience to other industries.  相似文献   
102.
Technological progress has helped Bangladesh to achieve self‐sufficiency in rice production in 2001 from a heavy import‐dependence, despite doubling of population and a reduction in arable land since its independence in 1971. As the adoption of modern varieties (MV) of rice is reaching a plateau, particularly for the irrigated ecosystem, an important issue is whether the research system will be able to sustain the growth of production. The present paper addresses the following questions: (i) to what extent farmers have been replacing the old MV with the new MV, and (ii) what has been the impact of the variety replacement on productivity and profitability. How crucial is the continuous research and release of improved rice varieties toward improving farm production and income for farmers comes out as a clear message to policymakers from the current paper.  相似文献   
103.
While the Chandlerian firm has come to dominate large sectors of advanced economies, recent studies have shown that the properties of knowledge used by firms, the dynamic nature of transaction costs, and the impact of information and communication technologies on organisations might reduce firm scale and scope. We present a contingent model of firm boundaries that explains why, as a result of technological change, firms might simultaneously outsource some activities that they had formerly preferred to produce in-house while increasing their vertical integration in other areas. We support our conclusions with evidence from different industries.  相似文献   
104.
105.
106.
107.
108.
109.
This paper considers optimal commercial policy for a trading economy which departs from neo-classical characteristics only in that a minimum-wage constraint gives rise to unemployment. Although for a flexible-wage fully employed economy the Baldwin envelope yields dominant domestic production-cum-trade possibilities, unilateral imposition of an optimum tariff is shown not necessarily to be optimal commercial policy for the minimum-wage economy. Rather, there exists an envelope, derived from foreigners' trade indifference and attained via bilateral trade policy, which dominates the Baldwin envelope when the optimum tariff is zero (as Brecher has shown it can be for a minimum-wage economy), and can still yield superior production-cum-trade possibilities when the optimum tariff is non-zero.  相似文献   
110.
As part of an investigation into the performance of heating systems and the effectiveness of energy saving measures, temperatures have been monitored in forty centrally heated homes. The addition of extra insulation had no effect on the way people operated their heating system or on the temperature level set in the main living room. However, bedrooms were warmer and the importance of individual room temperature controls demonstrated. Differences between people's thermal requirements in domestic and office environments are considered.  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