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   9595篇
  免费   215篇
  国内免费   1篇
财政金融   1731篇
工业经济   797篇
计划管理   1674篇
经济学   2147篇
综合类   220篇
运输经济   43篇
旅游经济   133篇
贸易经济   1519篇
农业经济   393篇
经济概况   1123篇
信息产业经济   1篇
邮电经济   30篇
  2020年   108篇
  2019年   138篇
  2018年   179篇
  2017年   212篇
  2016年   191篇
  2015年   136篇
  2014年   186篇
  2013年   867篇
  2012年   268篇
  2011年   271篇
  2010年   256篇
  2009年   296篇
  2008年   274篇
  2007年   251篇
  2006年   204篇
  2005年   180篇
  2004年   184篇
  2003年   189篇
  2002年   149篇
  2001年   200篇
  2000年   207篇
  1999年   174篇
  1998年   170篇
  1997年   201篇
  1996年   175篇
  1995年   179篇
  1994年   164篇
  1993年   167篇
  1992年   194篇
  1991年   189篇
  1990年   150篇
  1989年   151篇
  1988年   123篇
  1987年   121篇
  1986年   126篇
  1985年   178篇
  1984年   155篇
  1983年   171篇
  1982年   137篇
  1981年   168篇
  1980年   140篇
  1979年   160篇
  1978年   134篇
  1977年   119篇
  1976年   125篇
  1975年   106篇
  1974年   101篇
  1973年   85篇
  1972年   64篇
  1971年   58篇
排序方式: 共有9811条查询结果,搜索用时 15 毫秒
61.
A breakeven point analysis of selected modes of recreational travel in which the costs of ownership and travel use of representative self-contained recreation vehicles are compared with the costs of lodging and travel by private automobile.  相似文献   
62.
63.
The results of a recent regular survey of opinions among enterprises of the real economy sector, which was conducted by the Laboratory for the Analysis and Forecasting of Microeconomic Processes of the Institute of Economic Forecasting of the RAS (IEF), are analyzed in this paper.  相似文献   
64.
The results of a regular survey of companies in the real economic sector conducted by the laboratory of analysis and forecasting of microeconomical processes of the Institute of Economic Forecasting, Russian Academy of Sciences, are analyzed and commented.  相似文献   
65.
Mass media are an essential factor for the success of small parties, for the media can act in a supporting or an inhibiting way towards these parties. This could be observed for the example of the German Green Party: As the Greens were becoming more and more important in the parliaments, the media changed their formerly very critical view of the party to a more factual and positive reporting. Is the party “Die Linke” now experiencing a similar process? The present study analyses the comments of three national German newspapers from 2005 to 2009, using a quantitative content analysis with the aim of bringing to light how the media acted towards “Die Linke”. The results show that commenting has hardly changed since earlier studies were published. Factual issues only play a marginal role, and the party is judged negatively in all newspapers, with the tageszeitung slightly distinct from the other two papers, though.  相似文献   
66.
Foreign experience in carrying out cluster policy and the scales of distribution and the variety of cluster structure types abroad are considered and generalized. The main attention is given to innovation directivity as the key factor of increasing regional and national economic competitiveness. The important role of the state in formation of effective cluster policy providing substantial improvement in the business climate and stimulating the priority development of high-tech fields is placed in strong relief. The next issue of the journal will contain an article about the situation in Russia (Ed.).  相似文献   
67.
A medico-demographic periodization of Russian socioeconomic reforms is presented, according to which the state of public health is characterized by different vectors.  相似文献   
68.
A comparative study of external mortality risk factors according to World Bank experts (Dying Too Young Report, 2005) and findings of other projects, as well as mortality reduction programs, is presented. The World Bank experts overrate the significance of smoking and lead pollution as mortality factors and underrate that of alcohol, air pollution, and unfavorable occupational environments. In addition, the impacts of radon, climate warming, and low temperatures, which are very important negative factors for Russia, are overlooked in the Report. Although mortality reduction measures are very topical under the current demographic crisis, certain federal target programs envisage very general measures, and the death rate remains high. Road Safety Improvement, which is the most concrete among these programs, may indeed help reduce road accident-related mortality. The importance of air pollution as a risk factor may grow as a result of changes in the structure of the fuel balance and an increased share of coal combustion.  相似文献   
69.
Fractal poverty traps   总被引:1,自引:0,他引:1  
  相似文献   
70.
We examine fluctuations in the predicted educational attainment of newly arrived legal U.S. immigrants between 1972 and 1999 by combining data from the U.S. Immigration and Naturalization Service with the Current Population Survey. A mid-1980s decline gave way to a noticeable improvement in the skill base of the immigrant population between 1987 and 1993. A short decline in the quality of immigrant skills—less severe than that of the mid-1980s—took place in the mid-1990s. In 1998, the trend reverses once more: The labor market quality of new legal U.S. immigrants improves. The primary sources of the fluctuations include changes in the quality and quantity of immigrants obtaining an adjustment and variations in the distribution of source regions and entry class types among new legal U.S. immigrants.  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