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   34040篇
  免费   358篇
财政金融   5655篇
工业经济   2011篇
计划管理   5480篇
经济学   7588篇
综合类   594篇
运输经济   127篇
旅游经济   266篇
贸易经济   7164篇
农业经济   901篇
经济概况   3959篇
信息产业经济   47篇
邮电经济   606篇
  2021年   112篇
  2020年   187篇
  2019年   276篇
  2018年   2682篇
  2017年   2456篇
  2016年   1595篇
  2015年   327篇
  2014年   496篇
  2013年   1758篇
  2012年   945篇
  2011年   2474篇
  2010年   2241篇
  2009年   2031篇
  2008年   1974篇
  2007年   2299篇
  2006年   501篇
  2005年   766篇
  2004年   864篇
  2003年   975篇
  2002年   627篇
  2001年   394篇
  2000年   414篇
  1999年   338篇
  1998年   327篇
  1997年   264篇
  1996年   306篇
  1995年   253篇
  1994年   266篇
  1993年   262篇
  1992年   284篇
  1991年   283篇
  1990年   259篇
  1989年   216篇
  1988年   182篇
  1987年   197篇
  1986年   231篇
  1985年   316篇
  1984年   279篇
  1983年   243篇
  1982年   248篇
  1981年   247篇
  1980年   232篇
  1979年   227篇
  1978年   194篇
  1977年   177篇
  1976年   170篇
  1975年   168篇
  1974年   143篇
  1973年   132篇
  1972年   115篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
101.
This paper analyses the cost of capital of firms with foreign equity listings. Our purpose is to shed light on the question whether international and domestic asset pricing models yield a different estimate of the cost of capital for cross‐listed stocks. We distinguish between (i) the multifactor ICAPM of Solnik (1979) and Sercu (1980) including both the global market portfolio and exchange rate risk premia and (ii) the single factor domestic CAPM. We test for the significance of the cost of capital differential in a sample of 336 cross‐listed stocks from nine countries in the period 1980–99. Our hypothesis is that the cost of capital differential is substantial for firms with international listings, as these are often large multinationals with a strong international orientation. We find that the asset pricing models yield a significantly different estimate of the cost of capital for only 12% of the cross‐listed companies. The size of the cost of capital differential is around 50 basis points for the US, 80 basis points for the UK and 100 basis points for France.  相似文献   
102.
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   
103.
104.
105.
106.
Modern national income accounting was designed in the early 20th century for the purpose of providing improved indicators about the performance of the economy so that government policy makers could better control the economy. The way that performance is measured affects the types of policies used to try to accomplish policy goals. Two attributes of national income accounting are analyzed for their effects on economic policy. First, government production is included in the national income accounts at cost, rather than at market value as private sector output is measured. This biases policy toward a larger public sector. Second, output is measured as a homogeneous dollar amount. This biases policy toward focusing on increasing quantities of inputs and outputs in the production process, rather than on innovation and entrepreneurship, which are the true engines of economic progress. Economic policy could be improved by focusing less on national income as an indicator of policy, and more on the underlying processes that foster economic progress.  相似文献   
107.
Agriculture remains sensitive to variation in rainfall and temperature. Fortunately, our ability to predict the lower frequency variation in the earth's atmosphere is increasing rapidly. While information cannot affect the underlying source of variability, it allows unexpected shocks to be anticipated and acted upon. This paper develops and analyzes an intertemporal Ricardian trade model with Bayesian beliefs. Results in this paper show that improved climate prediction reduces expected prices, but increases price variability. In addition, trade is crucial to realizing the potential benefits of climate prediction. The value of climate prediction is highest with both storage and trade, and falls by over 300% when a country is in autarky.  相似文献   
108.
Nelson and Plosser (1982), in a classic paper, failed to find strong evidence against the null hypothesis of a generating process with a unit autoregressive root for thirteen US macroeconomic time series. Perron (1989) claimed that such evidence was available for a majority of these series if the alternative hypothesis was of trend stationarity with a break in 1929. Zivot and Andrews (1992) treated the break date as endogenous, then finding strong evidence agcainst the null for a minority of these series. Our own analysis extends theirs by permitting a break under the null as well as the alternative hypothesis, and allowing for the sequential nature of the testing. Our empirical findings complete the circle. We find no strong evidence against the unit root hypothesis for any of the thirteen Nelson–Plosser series.  相似文献   
109.
如今,全球都笼罩在经济衰退之中.如果下一个就要轮到贵公司,你该怎么办?当然你要尽力保证企业财务的稳定.但更重要的是,你还必须了解公司在衰退结束后的目标设计.如果你知道企业的发展方向和如何实现这一目标,那么衰退时期是改善公司相对战略地位的好时机.  相似文献   
110.
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