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   13086篇
  免费   294篇
  国内免费   1篇
财政金融   2439篇
工业经济   1119篇
计划管理   2182篇
经济学   2838篇
综合类   186篇
运输经济   100篇
旅游经济   191篇
贸易经济   2222篇
农业经济   664篇
经济概况   1433篇
信息产业经济   1篇
邮电经济   6篇
  2021年   74篇
  2020年   138篇
  2019年   182篇
  2018年   217篇
  2017年   234篇
  2016年   232篇
  2015年   162篇
  2014年   244篇
  2013年   1271篇
  2012年   373篇
  2011年   418篇
  2010年   355篇
  2009年   413篇
  2008年   331篇
  2007年   388篇
  2006年   322篇
  2005年   252篇
  2004年   266篇
  2003年   253篇
  2002年   288篇
  2001年   244篇
  2000年   272篇
  1999年   225篇
  1998年   239篇
  1997年   234篇
  1996年   232篇
  1995年   205篇
  1994年   211篇
  1993年   207篇
  1992年   258篇
  1991年   238篇
  1990年   194篇
  1989年   162篇
  1988年   157篇
  1987年   199篇
  1986年   192篇
  1985年   267篇
  1984年   288篇
  1983年   268篇
  1982年   234篇
  1981年   231篇
  1980年   227篇
  1979年   238篇
  1978年   152篇
  1977年   144篇
  1976年   103篇
  1975年   131篇
  1974年   95篇
  1973年   96篇
  1971年   78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