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   30352篇
  免费   230篇
财政金融   5243篇
工业经济   1755篇
计划管理   4600篇
经济学   6788篇
综合类   972篇
运输经济   85篇
旅游经济   202篇
贸易经济   6355篇
农业经济   660篇
经济概况   3297篇
信息产业经济   45篇
邮电经济   580篇
  2020年   148篇
  2019年   209篇
  2018年   2558篇
  2017年   2336篇
  2016年   1478篇
  2015年   257篇
  2014年   362篇
  2013年   1428篇
  2012年   767篇
  2011年   2378篇
  2010年   2151篇
  2009年   1834篇
  2008年   1886篇
  2007年   2186篇
  2006年   297篇
  2005年   613篇
  2004年   735篇
  2003年   858篇
  2002年   522篇
  2001年   339篇
  2000年   361篇
  1999年   236篇
  1998年   268篇
  1997年   260篇
  1996年   240篇
  1995年   224篇
  1994年   232篇
  1993年   277篇
  1992年   253篇
  1991年   234篇
  1990年   219篇
  1989年   181篇
  1988年   176篇
  1987年   168篇
  1986年   197篇
  1985年   241篇
  1984年   299篇
  1983年   251篇
  1982年   244篇
  1981年   261篇
  1980年   231篇
  1979年   240篇
  1978年   198篇
  1977年   187篇
  1976年   169篇
  1975年   135篇
  1974年   138篇
  1973年   124篇
  1972年   83篇
  1969年   66篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
71.
This survey article examines the interaction between the domestic capital markets and capital formation in Australia from the 1890s up to the end of World War II. The disenchantment of the City of London with Australian securities in the 1890s opened a window for the development of domestic capital markets. It was the demands of the government for funds, especially during both wars, that transformed the scale and character of local markets. Local deposit taking institutions and stock exchanges handled a sufficient volume of domestic savings to fund the lion's share of both public and private sector capital formation.  相似文献   
72.
When the indemnity schedule is contingent on the farmer's price and individual yield, an optimal crop revenue insurance contract depends only on the farmer's gross revenue. However, this design is not efficient if, as is the case with available contracts, the coverage function is based on imperfect estimators of individual yield and/or price. The producer's degree of prudence and the extent of basis risks have important influences on the optimal indemnity schedule. In this broader context, optimal protection is not provided by available U.S. crop insurance contracts and may include combinations of revenue insurance, yield insurance, futures, and options contracts.  相似文献   
73.
74.
75.
76.
Interactive television has arrived, thanks to substantial technology investments that have been made by Sky and others. It is growing in importance as innovative interactive applications are developed for broadcast programmes (eg the BBCi service and Big Brother), and for advertising — and will develop further when broadband deployment gets to critical mass. Readers should not expect a television-variant of the world wide web, however. This was tried during 2000–2002 in the form of web look-alike, interactive ‘walled garden’ sites, and failed to attract critical mass footfall. The model has evolved and now revolves around interactive content synchronised with broadcast, which offers financial services companies an interesting new way to increase awareness and to differentiate the service presentation. Furthermore, over the next ten years, broadband is expected to usher in a new era of personalised television — in which specialised broadcasts (such as personal pensions advice programmes) can be made available on demand. The observations in this paper are mainly drawn from the UK, where digital television penetration is high; the lessons can be applied more broadly, however, and are relevant to any organisation thinking of promoting its service through entertainment channels.  相似文献   
77.
78.
Using Turkish industry-level data from 1983 to 1990, we find that politically organized industries receive both higher protection and promotion than unorganized ones. Tariff rates are decreasing (increasing) in the import-penetration ratio and the absolute value of the import-demandelasticity for organized (unorganized) industries. Subsidy rates are decreasing (increasing) in the output-supply elasticity for organized (unorganized) industries. The results are consistent with the predictions of the Grossman–Helpman model and its extension in this paper. The mix of protection and promotion is inversely related to the ratio of their respective marginal deadweight cost measures.  相似文献   
79.
80.
This paper deals with on-line computation—or step-wise learning—of Pareto optimal insurance contracts. Our approach tolerates that the loss distribution might be unknown, intractable, or not well specified. Thus we accommodate fairly inexperienced parties. Losses are here simulated or observed, one at a time, and they cause iterated revisions of the premium. The mechanical and global nature of probability calculus thereby yields to more tentative, myopic procedures, possibly closer to how humans operate or reason in face of risk. Sequential revisions may also reduce the expense of insurers' time and money in seeking sufficient statistics. Emphasized below is the remarkable simplicity and stability of the resulting adaptive procedures. Special attention goes to catastrophic risks, and to subsidized or competitive insurance.  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