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   384篇
  免费   6篇
财政金融   82篇
工业经济   28篇
计划管理   60篇
经济学   48篇
综合类   11篇
运输经济   4篇
旅游经济   29篇
贸易经济   89篇
农业经济   15篇
经济概况   24篇
  2023年   4篇
  2021年   2篇
  2020年   9篇
  2019年   8篇
  2018年   5篇
  2017年   13篇
  2016年   8篇
  2015年   7篇
  2014年   12篇
  2013年   59篇
  2012年   17篇
  2011年   9篇
  2010年   13篇
  2009年   16篇
  2008年   10篇
  2007年   14篇
  2006年   22篇
  2005年   6篇
  2004年   6篇
  2003年   8篇
  2002年   12篇
  2001年   8篇
  2000年   6篇
  1999年   8篇
  1998年   10篇
  1997年   4篇
  1996年   6篇
  1995年   6篇
  1994年   3篇
  1993年   6篇
  1992年   7篇
  1991年   8篇
  1990年   3篇
  1989年   3篇
  1988年   5篇
  1987年   2篇
  1986年   5篇
  1985年   12篇
  1984年   5篇
  1983年   4篇
  1982年   3篇
  1981年   4篇
  1979年   1篇
  1978年   4篇
  1976年   1篇
  1973年   1篇
  1970年   1篇
  1969年   1篇
  1967年   1篇
  1963年   1篇
排序方式: 共有390条查询结果,搜索用时 15 毫秒
1.
2.
Lynn  Peter 《Quality and Quantity》2003,37(3):239-261
The effects of unit non-response on survey errors are of great concern to researchers.However, direct assessment of non-response bias in survey estimates is rarely possible.Attempts are often made to adjust for the effects of non-response by weighting, but thisusually relies on the use of frame data or external population data, which are at bestmodestly correlated with the survey variables. This paper reports the development ofa method to collect limited survey data from non-respondents to personal interviewsurveys and a large-scale field test of the method on the British Crime Survey (BCS).The method is shown to be acceptable and low cost, to provide valid data, and to haveno detrimental effect on the main survey. The use of the resultant data to estimatenon-response bias is illustrated and some substantive conclusions are drawn for the BCS.  相似文献   
3.
Analysts' ability to forecast earnings per share has been the subject of considerable debate. A concern highlighted in previous research is the agency problem which may arise when analysts have a close working relationship with the firms for which they are providing forecasts. This paper provides evidence that this relationship does not improve the accuracy of the earnings forecasts, but stimulates optimistic forecasts. In addition, the paper examines whether firm size is a factor in forecast accuracy or bias.  相似文献   
4.
It is well documented that share prices on ex-dividend days drop by less than the value of the dividends paid. However, the explanations offered to date remain inconclusive. This study examines the behaviour of share prices on ex-dividend days using data from the UK after the introduction of the 1988 Income and Corporation Taxes Act. Following [10] we sub-divide the data conditional on the size of the dividend paid. We find that for the large dividend sub-sample, when the impact of market micro-structure is taken into account, the ex-dividend price drop is not significantly different to the value of the dividend paid.  相似文献   
5.
Does Hedging Affect Firm Value? Evidence from the US Airline Industry   总被引:1,自引:0,他引:1  
Does hedging add value to the firm, and if so, is the source of the added value consistent with hedging theory? We investigate jet fuel hedging behavior of firms in the US airline industry during 1992–2003 to examine whether such hedging is a source of value for these companies. We illustrate that the investment and financing climate in the airline industry conforms well to the theoretical framework of Froot, Scharfstein, and Stein (1993). In general, airline industry investment opportunities correlate positively with jet fuel costs, while higher fuel costs are consistent with lower cash flow. Given that jet fuel costs are hedgeable, airlines with a desire for expansion may find value in hedging future purchases of jet fuel. Our results show that jet fuel hedging is positively related to airline firm value. The coefficients on the hedging variables in our regression analysis suggest that the “hedging premium” is greater than the 5% documented in Allayannis and Weston (2001), and might be as large as 10%. We find that the positive relation between hedging and value increases in capital investment, and that most of the hedging premium is attributable to the interaction of hedging with investment. This result is consistent with the assertion that the principal benefit of jet fuel hedging by airlines comes from reduction of underinvestment costs.  相似文献   
6.
7.
I see a big growth potential for the US and Chinese biotechnology partnerships for the next years. US biotechnology sector is generating already more than $50 billion dollars. Chinese bio-technology will grow in the next 20 years to more than 11 billion yuan (US 1.33 billion) annually.  相似文献   
8.
9.
Canada and the United States have strong economic ties and form part of an integrated North American pork industry. Canada's pork industry is export-oriented, and the United States represents a key market for both live pigs and pork. Pork value chain stakeholders include input suppliers, pig producers, transportation companies, slaughter plants, wholesalers, and retailers. There are three overriding areas of concern for the Canadian pork industry with respect to potential impacts of the current pandemic (COVID-19). The first is Canada/US trade and the ability to continue exporting Canadian live pigs and pork to the United States. The second is labor and the impact of potential absenteeism on all sectors of the pork value chain. The third is global trade, because Canada's pork industry relies heavily on exporting pork to markets around the world.  相似文献   
10.
On January 16,New Culture,a listed company that had just announced cooperation with live streamer Li Jiaqi,saw its stock price hit up to the limit when the market opened.Early trading hours saw the trading of over 1.15 million transactions,and at the closing hour there were also over 700,000 transactions waiting to be executed.  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