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   13255篇
  免费   310篇
  国内免费   1篇
财政金融   2405篇
工业经济   1144篇
计划管理   2210篇
经济学   2898篇
综合类   181篇
运输经济   95篇
旅游经济   187篇
贸易经济   2293篇
农业经济   687篇
经济概况   1443篇
信息产业经济   1篇
邮电经济   22篇
  2021年   80篇
  2020年   142篇
  2019年   196篇
  2018年   226篇
  2017年   252篇
  2016年   253篇
  2015年   175篇
  2014年   274篇
  2013年   1271篇
  2012年   397篇
  2011年   447篇
  2010年   380篇
  2009年   444篇
  2008年   338篇
  2007年   397篇
  2006年   328篇
  2005年   253篇
  2004年   271篇
  2003年   252篇
  2002年   285篇
  2001年   245篇
  2000年   270篇
  1999年   227篇
  1998年   236篇
  1997年   236篇
  1996年   229篇
  1995年   202篇
  1994年   215篇
  1993年   207篇
  1992年   257篇
  1991年   232篇
  1990年   190篇
  1989年   160篇
  1988年   156篇
  1987年   195篇
  1986年   190篇
  1985年   262篇
  1984年   286篇
  1983年   262篇
  1982年   231篇
  1981年   230篇
  1980年   223篇
  1979年   234篇
  1978年   147篇
  1977年   139篇
  1976年   101篇
  1975年   130篇
  1974年   93篇
  1973年   94篇
  1971年   77篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
81.
This paper considers input pricing rules for a producer cooperative which supplies its members with two inputs: a publicly provided private input (water), and a local public input (road services). An Israeli Moshav which allocates land equally among producers is a good example. The cooperative uses a two-part pricing rule: a product-dependent uniform fee (head tax) and a user charge per unit of the private input. Discrimination of head tax among the producer groups is shown to dominate that of user charge in the short run. However, land reallocation among producers can result in a Pareto-superior pricing rule and the Henry George theorem emerges in the long run. Thus, allowing land leasing while maintaining equal rights to land increases producer welfare.  相似文献   
82.
The relationship between migration and fertility is examined. The author proposes an alternative model to those used previously and applies it to data from the 1973 National Demographic Survey of the Philippines. The model assumes that although the fertility of migrants declines initially because of economic and psychological hardships, it rises subsequently as migrants become settled in their new environment.  相似文献   
83.
Present classifications of the developing countries are of limited usefulness as a basis for determining development policy priorities in the industrialised countries, argue our authors. They define a group of “key countries” which are of strategical importance for the world economy and outline the development risks facing these countries.1 They suggest that the OECD countries would be better advised to follow a policy of cooperation with these key countries rather than the “man mind thyself” policies which are presently gaining in popularity.  相似文献   
84.
This paper makes use of a dynamic model of an open economy with flexible exchange rates to examine the dynamic characteristics of the system for different specifications of monetary authority behavior. The model contains dynamic adjustment equations for both output and prices. Two policy rules are examined: (a) maintaining a constant nominal money supply growth, and (b) maintaining a constant nominal interest rate. With the former the system is found to be self-equilibrating. The latter, however, could easily give rise to self-perpetuating disequilibrium situations. In both cases expectations play a crucial role in the adjustment process.  相似文献   
85.
This study was undertaken to examine the influence of wife's employment on major family expenditures. Tobit analysis of data from the 1972–73 Consumer Expenditure Surveys found no relationship between wife's employment and outlays on twelve categories of expenditures. Family income had the greatest overall influence on the expenditure categories examined. Therefore, it appears that the absolute amount of income was more important than its sources in determining expenditures.  相似文献   
86.
87.
88.
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   
89.
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   
90.
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   
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