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   12396篇
  免费   259篇
财政金融   2193篇
工业经济   861篇
计划管理   2061篇
经济学   2655篇
综合类   94篇
运输经济   78篇
旅游经济   166篇
贸易经济   1908篇
农业经济   710篇
经济概况   1887篇
信息产业经济   1篇
邮电经济   41篇
  2020年   110篇
  2019年   178篇
  2018年   269篇
  2017年   244篇
  2016年   244篇
  2015年   155篇
  2014年   263篇
  2013年   1071篇
  2012年   354篇
  2011年   350篇
  2010年   291篇
  2009年   349篇
  2008年   340篇
  2007年   292篇
  2006年   284篇
  2005年   241篇
  2004年   247篇
  2003年   238篇
  2002年   249篇
  2001年   220篇
  2000年   251篇
  1999年   218篇
  1998年   205篇
  1997年   186篇
  1996年   202篇
  1995年   182篇
  1994年   193篇
  1993年   190篇
  1992年   209篇
  1991年   205篇
  1990年   207篇
  1989年   178篇
  1988年   144篇
  1987年   152篇
  1986年   169篇
  1985年   247篇
  1984年   224篇
  1983年   197篇
  1982年   199篇
  1981年   199篇
  1980年   188篇
  1979年   189篇
  1978年   166篇
  1977年   153篇
  1976年   148篇
  1975年   150篇
  1974年   116篇
  1973年   115篇
  1972年   107篇
  1971年   83篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
992.
993.
994.
995.
A bstract . A 1982 study of the efficacy and impact of tax and expenditure limitations (TEL) is updated. Utilizing various statistical comparisons, growth in expenditures and revenues in states with TELs is compared to growth in states without a TEL in place. This comparison matches growth in the pre tax revolt years with growth in the post revolt years. In all cases the statistical tests show that the existence of a TEL has had virtually no impact on the growth of statewide expenditures or revenues. Additionally, while aggregate state expenditures and revenues exhibited some decline during the tax revolt years, this decline was short-lived and has since been reversed. Thus, the primary implication is that TELs as presently construed are an ineffective means of limiting growth in state budgets  相似文献   
996.
Although a good deal of empirical research is available on the measurement of turkey body weight gain response to fat supplementation, none has attempted to study the economics of optimizing fat level in turkey diets. This study focuses on deriving the optimal fat level in turkey diets. The methodology used should also apply to any nonruminant species (swine and poultry).  相似文献   
997.
This paper is concerned with the large sample efficiency of the asymptotic least-squares (ALS) estimators introduced by Gouriéroux, Monfort, and Trognon (1982, 1985) and Chamberlain (1982, 1984). We show how the efficiency of these estimators is affected when additional information is incorporated into the estimation procedure. The relationship between ALS and maximum likelihood is discussed. It is shown that ALS can be used to obtain asymptotically efficient estimates for a large range of econometric models. Many results from the literature on estimation are special cases of the framework adopted in this paper. An application of ALS to a dynamic rational expections factor demand model in the manufacturing sector in The Netherlands demonstrates the potential of the method in the estimation of the parameters in models which are subject to nonlinear cross-equation restrictions.  相似文献   
998.
Can economic principles be applied to the behaviour of charities? Professor Edwin West of the Universities of Carleton and Emory, claims that charities are susceptible to the same type of analysis as companies - but with important differences.  相似文献   
999.
1000.
Since the September 11, 2001, terrorist attacks, repeated airport closures due to security breaches have imposed substantial costs on travelers, airlines, and government agencies in terms of flight delays and cancellations. Using data from the year following September 11, this study examines how airlines recover flight schedules upon reopening of airports that have been closed for security reasons. As such, this is the first study to empirically examine service quality during irregular airport operations. Our results indicate that economic considerations, particularly the potential revenue per flight, have predictable effects on service quality following airport closures. Airport concentration, hub destination, and various logistical factors also significantly influence flight outcomes.  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