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   45052篇
  免费   873篇
  国内免费   1篇
财政金融   8322篇
工业经济   3221篇
计划管理   7162篇
经济学   10049篇
综合类   575篇
运输经济   303篇
旅游经济   690篇
贸易经济   6923篇
农业经济   2267篇
经济概况   6260篇
信息产业经济   2篇
邮电经济   152篇
  2021年   261篇
  2020年   463篇
  2019年   744篇
  2018年   931篇
  2017年   939篇
  2016年   943篇
  2015年   562篇
  2014年   1002篇
  2013年   4392篇
  2012年   1309篇
  2011年   1417篇
  2010年   1198篇
  2009年   1395篇
  2008年   1293篇
  2007年   1160篇
  2006年   1038篇
  2005年   937篇
  2004年   911篇
  2003年   890篇
  2002年   914篇
  2001年   847篇
  2000年   898篇
  1999年   842篇
  1998年   771篇
  1997年   779篇
  1996年   766篇
  1995年   658篇
  1994年   675篇
  1993年   738篇
  1992年   769篇
  1991年   738篇
  1990年   678篇
  1989年   605篇
  1988年   541篇
  1987年   565篇
  1986年   587篇
  1985年   855篇
  1984年   787篇
  1983年   724篇
  1982年   699篇
  1981年   657篇
  1980年   700篇
  1979年   645篇
  1978年   539篇
  1977年   508篇
  1976年   440篇
  1975年   439篇
  1974年   371篇
  1973年   370篇
  1972年   286篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
Robust institutional change is difficult to achieve. However, it is more difficult for some countries than others. We use data on 69 countries between 1870 and 2000 to show that political instability does not always affect growth outcomes. We then develop a simple model to explain this fact in which the likelihood that “good” institutions are abandoned during periods of political uncertainty depends on the opportunity cost of doing so. We operationalize our model by using contract intensive money as a proxy for this initial investment in growth‐enhancing institutions. Cross‐sectional and panel growth regressions support the model's predictions.  相似文献   
992.

The paper deals with effects of price changes on measurement of poverty. It is shown that there are situations, when prices and nominal incomes change, a higher nutritional intake or an increase in commodity consumption of the poor can be associated with higher poverty gaps and a higher poverty index of the society. A positive relationship of this kind is quite counter-intuitive in the context of poverty measurement. This is caused by the adjustment of the poverty line and/or incomes of one situation by the prices of the other for the purpose of comparison.

  相似文献   
993.
One reason firms exist is to serve as knowledge repositories. Firms compete against other firms and need profits to survive. Firms must be entrepreneurial to discover and act on profit opportunities. Knowledge required to spot profit opportunities is disbursed among economic actors and often is tacit knowledge that can only be obtained by those in close proximity. This gives rise to agglomeration economies, which can be leveraged within firms. In a competitive economy people have an incentive to keep knowledge from people in other firms, but to share it with those in their firm. One role of the firm is to act as a repository of knowledge for those within the firm’s boundaries, and to lower the cost of obtaining knowledge about profit opportunities. Entrepreneurs need firms to contain and capture the profits from their innovations.  相似文献   
994.
995.
Drug abuse treatment has been pervasive in the US in the recent years, and the associated direct treatment costs approached $18 billion in 2001. However, there have been few published studies on scale economies, and none on scope economies, for drug abuse treatment costs. We estimate a restricted cost function for 17 hospitals in Washington State that provided inpatient and/or outpatient drug abuse treatment during the years 1997–2004. We find significant evidence of scale economies for hospitals that provide only outpatient drug abuse treatment services. The marginal costs of outpatient services are even smaller for hospitals that produce both outpatient and inpatient drug abuse treatment services. Further, these joint-production hospitals exhibit diseconomies of scope, or specialization economies. These results all imply that recent trends towards additional outpatient treatment services will enhance cost efficiency.  相似文献   
996.
We analyse the increase in sales of Pick 3 and Pick 4 daily numbers lottery games and other Ohio Lottery games after Ohio introduced midday drawings for the Pick 3 and Pick 4 games in August 1999. The midday drawings increased Pick 3 sales by 5%, Pick 4 sales by 12%, and total lottery sales by 2% based on our analysis of a 36-month panel dataset of Ohio lottery sales by zip code. Midday drawings raise more revenue from the strongly regressive daily numbers games. However, the introduction of midday drawings does not change the negative income elasticities of demand for numbers games in an economically meaningful manner.  相似文献   
997.
We study the determinants of country default risk by applying a Multiple Indicators Multiple Causes (MIMIC) model. This accounts for the fact that country default risk is an unobservable variable. Whereas existing (regression-based) approaches typically use only one of several possible country default risk indicators as the dependent variable, the MIMIC model enables us to consider several indicators at once. The simultaneous consideration of sovereign yield spreads and Standard and Poor (S&P) ratings may help to improve the identification of the latent country default risk. Our results confirm most of the literature's main findings regarding important determinants of country default risk, refute others and provide new evidence to controversial questions.  相似文献   
998.
This article investigates how the price indices of major cities of the US respond to the shock from a city and from monetary policy. We find that the crisis of Bretton Woods system in 1968 and the oil crisis in 1974 should be incorporated as structural breaks in monetary policy variables and price indices. Using cointegration technique with structural break in our aggregated data, we find that the average half-life is 1.75 years, which is closer to what some of others found in disaggregated data, and that the interest rate is an effective tool for controlling cities’ price in short run.  相似文献   
999.
This article employs a database of over 2000 observations of Foreign Direct Investment (FDI) projects in UK regions. We analyse this data by means of various multinomial and conditional logit models in order to identify the major determinants of the location choices of these inward investments. Having controlled for the various characteristics of inward investing firms, the projects and the regions, our results suggest that existing regional specialization is the single most important determining feature of where inward FDI locates. In addition, London is seen to benefit primarily by the immigration of new investments, the majority of which are related to service sector activities.  相似文献   
1000.
This article analyses the effects of Foreign Direct Investment (FDI) on technical progress in Spanish manufacturing. Particularly, we study how FDI's contributions vary depending on the economic structure of the industry. The results show that most FDI goes to capital-intensive sectors, especially when those sectors are also Research and Development (R&D)-intensive. Our estimates of the Solow residual show that the positive effect of contemporaneous and lagged FDI on manufacturing productivity is only attributable to capital and R&D intensive industries in what seems to be related to a dynamic capabilities explanation or to complementarities with R&D expenditures.  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