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   13003篇
  免费   303篇
  国内免费   1篇
财政金融   2373篇
工业经济   1102篇
计划管理   2181篇
经济学   2848篇
综合类   184篇
运输经济   106篇
旅游经济   201篇
贸易经济   2217篇
农业经济   661篇
经济概况   1423篇
信息产业经济   1篇
邮电经济   10篇
  2021年   77篇
  2020年   141篇
  2019年   187篇
  2018年   223篇
  2017年   248篇
  2016年   240篇
  2015年   164篇
  2014年   256篇
  2013年   1258篇
  2012年   379篇
  2011年   419篇
  2010年   357篇
  2009年   412篇
  2008年   328篇
  2007年   377篇
  2006年   322篇
  2005年   247篇
  2004年   264篇
  2003年   245篇
  2002年   281篇
  2001年   241篇
  2000年   267篇
  1999年   224篇
  1998年   237篇
  1997年   236篇
  1996年   227篇
  1995年   200篇
  1994年   210篇
  1993年   205篇
  1992年   253篇
  1991年   232篇
  1990年   190篇
  1989年   161篇
  1988年   156篇
  1987年   195篇
  1986年   192篇
  1985年   261篇
  1984年   283篇
  1983年   262篇
  1982年   232篇
  1981年   230篇
  1980年   224篇
  1979年   234篇
  1978年   147篇
  1977年   139篇
  1976年   102篇
  1975年   130篇
  1974年   93篇
  1973年   93篇
  1971年   79篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
91.
92.
93.
This paper estimates technical efficiency (TE) measures using four alternative production frontier models, and evaluates the sensitivity of the results to the choice of methodology. The Cobb-Douglas functional form along with data for 1982 and 1983 from 404 dairy farms located throughout six northeastern states in the US are used in the estimation. A general conclusion is that, broadly speaking, frontier function models are neutrally upwardly scaled versions of the OLS or average model. A second conclusion is that different models yield markedly different efficiency levels across firms. However, the correlation between the indexes from the various methods is high, which implies that the ordinal ranking of firms according to their measured level of technical efficiency appears to be independent of the method used for a given year. By comparison, the correlation between efficiency indexes for the same method across time, although positive, is much lower than the previous set of correlations. Correlation analysis of efficiency versus farm size and of efficiency versus returns over variable costs, based on the alternative models, yielded consistent results.  相似文献   
94.
This paper extends the conjectural approach in industrial organisation to the analysis of imperfections in output and factor markets. Starting from the specification of a production function, the econometric analysis is based on the formulation and estimation of a simultaneous-equation model consisting of a production function, first-order conditions associated with factor employment, and two conjectural elasticities to parameterise the industry's oligopoly and oligopsony equilibria. As an example, we provide an application to the US meat-packing industry. Our results suggest that the industry exercises market power in both the output (meat) market and the factor (live animal) market.  相似文献   
95.
This paper is the result of survey investigation the attitudes of Western Canadian farmers toward two biotechonological products, ENFIX-L and PB-50. Farmers were asked to rate both the importance and the performance of 21 attributes of the products. Soil depletion was found to be an important concern to many farmers. personal and environmental risks were less of a concern. Overall, it was found that the non-biotech-nological aspects of a product would prevail in purchasing decisions.  相似文献   
96.
97.
We examine the dynamics of output connectedness of Asian Pacific Economic Cooperation (APEC) economies using time‐varying, region‐specific, generalised connectedness measures. We find that the connectedness of APEC economies with the rest of the world is quite substantial, with the 2008–09 Global Financial Crisis increasing the connectedness measures above their precrisis levels. The USA, China, and Korea are shown to be systemically important and to dominate APEC’s real activities, while outside the APEC region the roles of India and the UK are also non‐negligible. These results suggest that the majority of APEC economies are considerably open to output shocks from the dominant economies such that policymakers in APEC must be continuously conscious of headwinds originating from these sources.  相似文献   
98.
This paper presents an approach to assessing the efficacy of public spending on research and development in state programs. At present, there is a need to develop a unified approach to the analysis and evaluation of the efficacy of such spending from the perspective of participants in state programs (federal executive bodies). The proposed approach does not allow evaluating the efficacy of public spending on the development of research areas assigned to the authors.  相似文献   
99.
It has been shown how static and dynamic characteristics could be used for a comparative assessment of social, environmental, and economic development, as well as the development balance in social, economic, and ecological spheres. The proposed methodological toolkit has made it possible to identify problem areas and stably manifested dynamic disproportions in the investigated regions, which require corrective actions in order to ensure sustainable development.  相似文献   
100.
The article has analyzed trends and problems in migration processes in the Far East of Russia in the 2010s. There are restrictions on population growth in the Far East due to migration. It has been determined that the implementation of modern policy decisions with regard to the Far East region does not create real prerequisites for increasing the incomes of the population. It has been proved that, in order to attract population to the Far East, it is necessary to institute economic development in the region that can increase incomes and make them comparable to other more successful federal districts.  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