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   36166篇
  免费   436篇
财政金融   6517篇
工业经济   2196篇
计划管理   5552篇
经济学   8127篇
综合类   1027篇
运输经济   134篇
旅游经济   326篇
贸易经济   7317篇
农业经济   940篇
经济概况   3838篇
信息产业经济   45篇
邮电经济   583篇
  2021年   106篇
  2020年   239篇
  2019年   314篇
  2018年   2652篇
  2017年   2443篇
  2016年   1594篇
  2015年   354篇
  2014年   493篇
  2013年   2147篇
  2012年   926篇
  2011年   2557篇
  2010年   2310篇
  2009年   2023篇
  2008年   2051篇
  2007年   2340篇
  2006年   453篇
  2005年   764篇
  2004年   885篇
  2003年   1031篇
  2002年   675篇
  2001年   459篇
  2000年   508篇
  1999年   370篇
  1998年   422篇
  1997年   392篇
  1996年   344篇
  1995年   344篇
  1994年   329篇
  1993年   359篇
  1992年   326篇
  1991年   323篇
  1990年   294篇
  1989年   241篇
  1988年   237篇
  1987年   223篇
  1986年   274篇
  1985年   340篇
  1984年   402篇
  1983年   355篇
  1982年   318篇
  1981年   339篇
  1980年   305篇
  1979年   306篇
  1978年   263篇
  1977年   261篇
  1976年   233篇
  1975年   201篇
  1974年   195篇
  1973年   160篇
  1972年   107篇
排序方式: 共有10000条查询结果,搜索用时 375 毫秒
81.
This paper compares the approximation capabilities of the minflex-Laurents translog and minflex generalized Leontief cost functions with their translog and generalized Leontief counterparts in Monte Carlo experiments. The minflex Laurent specifications generally provided closer approximations to underlying technical and economic parameters. Imposition of nonlinear restrictions on some of the parameters of the minflex Laurent models yielded measurable improvement in estimated elasticities of substitutions, returns to scale, and rates of technical change.The refereeing process of this paper was handled through E. Appelbaum.  相似文献   
82.
The study examines the origins of technology important to improving productivity in the food-processing industries. Technology flows were measured both by patents in patent classes closely identified with six food industries, and by a sample of significant food-processing innovations. These data are consistent with the hypothesis that interindustry technology flows are the most significant determinant of productivity improvements in the food industries. These findings solve the enigma that the food-processing industries have enjoyed rapid improvements in productivity despite making very modest investments in research and development.  相似文献   
83.
84.
Abstract.  This paper is concerned with the sustainability of free‐trade agreements (FTA). FTA sustainability is influenced by governments' valuations of political contributions, discount factors, the lobbying position of the specific‐interest groups in the intra‐industry trade sectors, and the sectoral coverage of the FTA. I find that (i) under certain conditions, the FTA under protectionist lobbying could be more sustainable than the FTA under no political pressure; (ii) the lobby‐supported FTA is more sustainable than the lobby‐opposed FTA and the FTA under no political pressure; and (iii) multisector trade enhances FTA sustainability. JEL Classification: F12, F13, F15.  相似文献   
85.
86.
This article examines the impact of a specific aspect of air quality—visibility, or the ability to clearly see distant objects—on housing values. Our analysis is based on a data set constructed by matching residential housing sales data from the Los Angeles Metropolitan Area for the period 1980 through 1995 with visibility and other air pollution data and other characteristics. We find that visibility differences are capitalized into housing values, producing a measurable hedonic price gradient. The time-series design facilitates an estimate of the demand for visibility that we use to calculate the benefits of changes in visual range.  相似文献   
87.
88.
That survey research is error prone is not a new idea and different varieties of non-sampling error have been investigated in the literature as well as consideration being given in many statistics textbooks to the issue of sampling error. The paper here considers research upon corporate environmental reporting. It compares information provided by corporate environmental reports with information that survey respondents claim their organization’s environmental report contains. This enables the accuracy of the claims to be assessed. Consideration is given to two different industries the Water industry and the Energy industry. Errors due to inaccurate reporting by survey respondents are shown to be relatively infrequent and respondents appear just about as likely to claim they report information that they do not, in fact, report as to fail to indicate that they report information that is, in fact, actually reported.  相似文献   
89.
This paper first examines the rapid growth and changing composition of manufactured exports in Indonesia and Thailand, highlighting the rapid growth of office and computer machinery and electric machinery, somewhat slower growth of non-electric and transportation machinery, as well as the low growth of previously large exports of textiles apparel. Second, the important contributions of foreign multinational enterprises (MNEs) to export growth in the machinery industries, particularly in electric, office, and computing machinery, are documented. Third, the paper describes trade policies in all these industries in some detail, emphasizing how low protection was a key facilitator of rapid export growth in the MNEs that dominated the electric, office, and computing machinery industry, while high protection reduced incentives to export among MNEs in the transportation machinery industry.  相似文献   
90.
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