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   22359篇
  免费   631篇
  国内免费   13篇
财政金融   4127篇
工业经济   1760篇
计划管理   3859篇
经济学   4902篇
综合类   404篇
运输经济   152篇
旅游经济   420篇
贸易经济   3727篇
农业经济   1175篇
经济概况   2432篇
信息产业经济   1篇
邮电经济   44篇
  2021年   149篇
  2020年   268篇
  2019年   396篇
  2018年   465篇
  2017年   525篇
  2016年   504篇
  2015年   335篇
  2014年   525篇
  2013年   2199篇
  2012年   638篇
  2011年   695篇
  2010年   640篇
  2009年   699篇
  2008年   715篇
  2007年   663篇
  2006年   573篇
  2005年   523篇
  2004年   476篇
  2003年   479篇
  2002年   484篇
  2001年   457篇
  2000年   494篇
  1999年   432篇
  1998年   451篇
  1997年   444篇
  1996年   439篇
  1995年   378篇
  1994年   357篇
  1993年   392篇
  1992年   384篇
  1991年   380篇
  1990年   348篇
  1989年   281篇
  1988年   236篇
  1987年   267篇
  1986年   278篇
  1985年   416篇
  1984年   387篇
  1983年   366篇
  1982年   329篇
  1981年   352篇
  1980年   302篇
  1979年   311篇
  1978年   258篇
  1977年   213篇
  1976年   211篇
  1975年   166篇
  1974年   146篇
  1973年   145篇
  1972年   115篇
排序方式: 共有10000条查询结果,搜索用时 987 毫秒
51.
We examine whether the use of the three‐moment capital asset pricing model can account for liquidity risk. We also make a comparative analysis of a four‐factor model based on Fama–French and Pástor–Stambaugh factors versus a model based solely on stock characteristics. Our findings suggest that neither of the models captures the liquidity premium nor do stock characteristics serve as proxies for liquidity. We also find that sensitivities of stock return to fluctuations in market liquidity do not subsume the effect of characteristic liquidity. Furthermore, our empirical findings are robust to differences in market microstructure or trading protocols between NYSE/AMEX and NASDAQ.  相似文献   
52.
The concept of “inducing growth” is typically considered an adverse consequence of a project on the land use system. In certain instances, however, the desire to induce growth and foster land use change is a focus of land use policy. Such is the example of the Appalachian Highway Development System (AHDS) program initiated by the Appalachian Regional Commission (ARC) during the late 1960s. With the goal of providing highway infrastructure to improve assess to a geographically isolated and historically impoverished region, the ADHS has added nearly 3000 miles of highway to the Appalachian landscape. The degree to which highway investment has contributed to regional growth remains a controversial point and tractable methods to quickly assess landscape change given a project of this magnitude are elusive. In this paper a portion of the AHDS trending through southern Ohio is examined using data acquired from the Landsat series of satellites. Beginning with a pre-highway condition in 1976, a 26 year time horizon, concluding in 2002, was analyzed based on a post-classification change detection methodology. Results of this investigation revealed slight, yet significant, levels of urban expansion within a 10 km corridor along the path of AHDS Corridor D/State Route 32. Beyond this buffer zone the land use system evidenced more stability, suggesting that as distance increased from Corridor D/State Route 32, reduced accessibility also reduced the attractiveness of land for urban uses. Relating these results back to the infrastructure investment policies of the ARC demonstrates that growth did result from the construction of Corridor D and supports previous findings that land development based on highway construction is extremely time-sensitive.  相似文献   
53.
54.
55.
Transdisciplinarity: Context, contradictions and capacity   总被引:1,自引:0,他引:1  
  相似文献   
56.
Analysis of firm investment behavior during 1982–1993 shows that the Tax Reform Act of 1986 (TRA 86) Public Law No. 99-514 substantially affects both purchases and leases of depreciable assets. The changes in the regular corporate income tax rules are shown to lower asset acquisition. The effect of the alternative minimum tax (AMT) is found to vary with the debt share in firms’ capital structure and with the frequency of AMT exposure during the life of the assets acquired. On average, TRA86 depresses asset purchases less for firms that are subject to the AMT: AMT somewhat mitigates the negative effects of the regular tax rules.  相似文献   
57.
58.
59.
This article examines the economic outcome of 2006 and builds a forecast for 2007–2010. The medium-term development risks of the Russian economy are analyzed.  相似文献   
60.
This paper reports on a questionnaire survey about share valuation practices among investors and their intermediaries in Saudi Arabia. The findings suggest that fundamental analysis is used most by investor respondents where a P/E multiple is applied to an earnings forecast to generate a prediction of future price. However, technical analysis is also used to a much greater extent than in developed markets. Finally, the results indicate that quarterly and annual reports as well as newspapers are widely consulted by investors when forming their expectations about share valuations.  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