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   40040篇
  免费   446篇
  国内免费   1篇
财政金融   7100篇
工业经济   2433篇
计划管理   6012篇
经济学   8987篇
综合类   824篇
运输经济   175篇
旅游经济   433篇
贸易经济   7886篇
农业经济   1253篇
经济概况   4715篇
信息产业经济   44篇
邮电经济   625篇
  2021年   133篇
  2020年   244篇
  2019年   407篇
  2018年   2694篇
  2017年   2473篇
  2016年   1657篇
  2015年   371篇
  2014年   607篇
  2013年   2500篇
  2012年   1128篇
  2011年   2633篇
  2010年   2392篇
  2009年   2189篇
  2008年   2158篇
  2007年   2412篇
  2006年   628篇
  2005年   849篇
  2004年   954篇
  2003年   986篇
  2002年   747篇
  2001年   500篇
  2000年   505篇
  1999年   437篇
  1998年   420篇
  1997年   416篇
  1996年   422篇
  1995年   357篇
  1994年   367篇
  1993年   399篇
  1992年   408篇
  1991年   401篇
  1990年   329篇
  1989年   301篇
  1988年   291篇
  1987年   302篇
  1986年   322篇
  1985年   468篇
  1984年   433篇
  1983年   400篇
  1982年   376篇
  1981年   345篇
  1980年   390篇
  1979年   318篇
  1978年   270篇
  1977年   256篇
  1976年   198篇
  1975年   242篇
  1974年   193篇
  1973年   188篇
  1972年   133篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
32.
33.
34.
35.
36.
Much of the discussion about banking and commerce in America has failed to make several crucial distinctions and has not accounted for many arrangements that have promoted the mixing of these activities. We investigate the history of banking and commerce in the United States, looking both at bank control of commercial firms and commercial firms' control of banks. We trace how these controls have changed with shifting definitions of "bank" and changing methods of "control." Despite the regulations prohibiting some arrangements that promote financial control, we find evidence of extensive linkages between banking and commerce in the United States. These linkages usually build on devices that are very close substitutes to the arrangements prohibited by law. Altogether, our findings question the often made claim that traditionally banking in the United States has been separated from commerce. Furthermore, given that research on Japan and Germany has shown that the mixing of banking and commerce matters for a variety of issues, our evidence also raises some questions on similar research in the United States which makes the simplifying assumption that these industries are separated.  相似文献   
37.
This article reports on the latest in a series of international comparisons of management practices and performance outcomes of industries in various countries. Here, it is the service industries in the UK and the US which come under the microscope. Among the companies surveyed, there were more world-class performers in the US than the UK, but also more low performers. The concluding part of the article is diagnostic – the authors also suggest measures which could improve performance.  相似文献   
38.
The price movements of certain assets can be modeled by stochastic processes that combine continuous diffusion with discrete jumps. This paper compares values of options on assets with no jumps, jumps of fixed size, and jumps drawn from a lognormal distribution. It is shown that not only the magnitude but also the direction of the mispricing of the Black-Scholes model relative to jump models can vary with the distribution family of the jump component. This paper also discusses a methodology for the numerical valuation, via a backward induction algorithm, of American options on a jump-diffusion asset whose early exercise may be profitable. These cannot, in general, be accurately priced using analytic models. The procedure has the further advantage of being easily adaptable to nonanalytic, empirical distributions of period returns and to nonstationarity in the underlying diffusion process.  相似文献   
39.
This study investigates the relative roles of bond ratings and financial information in the setting of bond yields. Structural equation modeling techniques are used to learn whether ratings determine yields or whether both ratings and yields are determined by a concurrent set of economic and financial factors. Tests of alternative structural model configurations provide evidence regarding the associations between bond ratings, financial information, and bond yields. Both ratings and financial information are found to play an important role in determining bond yields. In addition, yields are consistent with the higher rating in cases of split ratings.  相似文献   
40.
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