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   16467篇
  免费   495篇
  国内免费   13篇
财政金融   2785篇
工业经济   1166篇
计划管理   2774篇
经济学   3505篇
综合类   311篇
运输经济   106篇
旅游经济   305篇
贸易经济   3383篇
农业经济   788篇
经济概况   1627篇
邮电经济   225篇
  2021年   129篇
  2020年   204篇
  2019年   277篇
  2018年   447篇
  2017年   466篇
  2016年   442篇
  2015年   307篇
  2014年   461篇
  2013年   1715篇
  2012年   474篇
  2011年   519篇
  2010年   536篇
  2009年   523篇
  2008年   562篇
  2007年   519篇
  2006年   396篇
  2005年   386篇
  2004年   335篇
  2003年   352篇
  2002年   345篇
  2001年   315篇
  2000年   333篇
  1999年   277篇
  1998年   280篇
  1997年   275篇
  1996年   277篇
  1995年   250篇
  1994年   248篇
  1993年   266篇
  1992年   246篇
  1991年   245篇
  1990年   226篇
  1989年   200篇
  1988年   151篇
  1987年   186篇
  1986年   188篇
  1985年   276篇
  1984年   282篇
  1983年   283篇
  1982年   253篇
  1981年   253篇
  1980年   212篇
  1979年   226篇
  1978年   163篇
  1977年   169篇
  1976年   154篇
  1975年   123篇
  1974年   114篇
  1973年   101篇
  1972年   76篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Spence (1975, footnote 5, p. 420) has shown that, in equilibrium, a price-regulated monopoly will supply a socially suboptimal level of quality. This tendency to undersupply quality has been used to justify an expansion of regulatory controls to the quality dimension in certain regulated industries (e.g., electricity and telecommunications). In this paper, we examine the effects of entry on equilibrium product quality in an industry which is price-regulated. A generalized conjectural variation model is used which allows both monopolistic and oligopolistic market structures. Using this model, we find that regulation generally leads to a socially nonoptimal (either too high or too low) level of quality, where the direction of the resulting departure from optimal quality depends upon the conjectures that firms form. Spence's result is obtained as a special case. We then demonstrate that a policy that encourages (or, at least, does not discourage) entry into the regulated market will cause equilibrium quality to move in a social-welfare-improving direction, regardless of the direction of the original distortion.  相似文献   
992.
This paper examines three propositions implied by the quantity theory of money, namely, the neutrality hypothesis, the Fisher hypothesis and the monetary approach to exchange rate determination for six developed countries within a dynamic framework, which incorporates the long-run proposition as its steady-state solution while allowing for short-run deviation from the hypothesized long-run relationships to take place. The joint hypothesis that all three propositions are satisfied simultaneously is supported only for two countries.  相似文献   
993.
We investigate share price reactions to announcements of dividends payable in the common stock of corporations different from the issuing firm. We find that firms that declare these dividends (typically investment companies) experience positive abnormal returns upon announcement. We also find that such dividends are more likely to be declared when the shares to be distributed have peaked in value. Consistent with this finding, we document negative announcement-period abnormal returns for firms having their shares distributed. Additional tests reveal that prices respond more negatively when the information signal is strongest, when outside ownership is more dispersed, and when management is more entrenched.  相似文献   
994.
Free trade, factor returns, and factor accumulation   总被引:1,自引:0,他引:1  
A model of development is studied in which physical capital and unskilled labor are good substitutes, and skilled labor is complementary to the resulting aggregate. Growth in a closed economy is compared with two open regimes. Inflows of physical capital only reduce the interest rate and raise both wage rates. The skilled wage rises more sharply, however, increasing the skill premium and accelerating human capital accumulation. Full integration with a larger and more developed neighbor also reduces the interest rate and raises both wage rates, but in this case the skill premium falls and human capital accumulation changes very little.  相似文献   
995.
996.
997.
998.
Determinants of demand for international tourist flows to Turkey   总被引:2,自引:0,他引:2  
This article describes the development and findings of a set of models used to identify the most important of the following selected variables influencing international tourist flows to Turkey: per capita income; relative prices; relative exchange rate; promotional expenditure (the Turkish Government has invested a substantial amount in promoting foreign tourism) and ‘special events’, eg political unrest. The demand for travel was measured both by the number of tourists, and by the total tourist expenditure. Data were obtained from secondary sources, and analysis was by least squares multiple regression. Income, price and exchange rate were found to be important factors but the impact of promotional expenditure was minimal  相似文献   
999.
A vector autoregressive model containing ocean grain freight rates, grain shipments, idled tonnage, new carrier deliveries and fuel prices is used to evaluate dynamic linkages in the ocean grain transport market. Dynamic relationships are of particular importance in ocean freighting months because freighting services are often contracted several months before shipment. In addition, such markets may be slow to adjust to shocks because of significant short-run fixities in shipping services. Ocean grain freight rates are found to be responsive to fuel prices and new ship deliveries, but are not affected by demand shocks. Ship idling rates are found to be sensitive to fuel prices, grain shipments and freight rates. Significant adjustment lags are revealed.  相似文献   
1000.
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