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   2060篇
  免费   15篇
财政金融   443篇
工业经济   174篇
计划管理   394篇
经济学   426篇
综合类   24篇
运输经济   14篇
旅游经济   73篇
贸易经济   334篇
农业经济   84篇
经济概况   107篇
邮电经济   2篇
  2023年   8篇
  2021年   13篇
  2020年   34篇
  2019年   46篇
  2018年   51篇
  2017年   45篇
  2016年   27篇
  2015年   27篇
  2014年   42篇
  2013年   239篇
  2012年   59篇
  2011年   43篇
  2010年   56篇
  2009年   71篇
  2008年   67篇
  2007年   69篇
  2006年   70篇
  2005年   58篇
  2004年   57篇
  2003年   58篇
  2002年   51篇
  2001年   43篇
  2000年   50篇
  1999年   60篇
  1998年   56篇
  1997年   39篇
  1996年   32篇
  1995年   43篇
  1994年   38篇
  1993年   32篇
  1992年   26篇
  1991年   28篇
  1990年   21篇
  1989年   19篇
  1988年   22篇
  1987年   25篇
  1986年   18篇
  1985年   36篇
  1984年   27篇
  1983年   37篇
  1982年   26篇
  1981年   20篇
  1980年   24篇
  1979年   20篇
  1978年   23篇
  1977年   17篇
  1976年   13篇
  1974年   16篇
  1973年   14篇
  1972年   11篇
排序方式: 共有2075条查询结果,搜索用时 0 毫秒
41.
In the western world, and in the United States in particular, there has been an abundance of food, materials and fuel over the past several decades. However, many futurists suggest this condition will soon change and a wide range of scarcities will result. Conditions in underdeveloped countries suggest one probable reaction to shortages in hoarding. In light of the predicted shortages this paper (1) develops definition and conceptualization of what constitutes hoarding, and (2) examines the influence hoarding activities have on channel decisions. An overriding purpose of the paper is to generate interest and research into the topic before conditions necessitate that concern.  相似文献   
42.
    
  相似文献   
43.
44.
45.
46.
  总被引:1,自引:0,他引:1  
In this paper we review the forms of mortgage securitization, analyze the demand for securitization, and demonstrate how securitization meets these demands by reducing intermediation costs. We argue that the increased use of securitization is a response to increased interest rate volatility and represents a contractual innovation that facilitates an efficient allocation of risk-bearing among households and intermediaries.  相似文献   
47.
Young people in the UK consume far above the maximum recommended levels of added sugar. It is likely that neither they nor their parents fully take account of the future health, social and economic costs of this high sugar consumption. This provides a rationale for policy intervention. The majority of young people's added sugar consumption occurs in the home, where purchases are typically made by parents. This means that understanding the purchase decisions of adults is important for policy design, even if the policies aim to reduce the consumption of young people. We discuss the merits of popular policies, including taxes, advertising restrictions and restrictions on the availability of specific foods, and we identify promising avenues for future research.  相似文献   
48.
We propose a multivariate test of the capital asset pricing model (C-CAPM) of the cross-sectional variation in equity returns in which we compare cross-sectional variation in equity returns to the cross-sectional variation in their conditional covariance with stochastic discount factors. We use a multivariate generalized heteroskedasticity in mean model to estimate 25 portfolios that are formed on size and the book-to-market ratio. Each portfolio is allowed to have its own no-arbitrage condition. We find that although the conditional covariances of returns with consumption exhibit negative variation across size, they do not vary across the book-to-market ratio. Thus, C-CAPM can capture the size effect, but not the value effect. The fit is, however, improved by allowing the coefficients on the consumption covariances to be different. The value effect appears to be associated with the book-to-market ratio as well as size. On its own the book-to-market ratio does not generate additional information about average returns to C-CAPM. A possible explanation for these findings is that both small and low book-to-market ratio firms are expected to have higher rates of growth.  相似文献   
49.
Past studies find abnormal returns to buying after repurchase program announcements. We analyze the profitability of trading after both program announcements and individual repurchase trade publication using different trading strategies – market and limit orders. The analysis of trades is possible because of a unique Canadian data set. The highest abnormal returns are earned by companies on their own repurchase trades which benefits the non-tendering shareholders. For the public investor, we find no strategies that, in practice, would earn abnormal returns to buying after program announcements. However, there is qualified evidence of abnormal returns to a limit order strategy following publication of individual repurchase trades.  相似文献   
50.
    
The martingale hypothesis is tested for 15 European emerging stock markets located in Croatia, the Czech Republic, Estonia, Hungary, Iceland, Latvia, Lithuania, Malta, Poland, Romania, Russia, the Slovak Republic, Slovenia, Turkey and the Ukraine. For comparative purposes, the developed stock markets in Greece, Portugal and the UK are also included. Rolling window variance ratio tests based on returns and signs and with wild bootstrapped p-values are used with daily data over the period beginning in February 2000 and ending in December 2009. The fixed-length rolling sub-period window captures changes in efficiency and is used to identify events which coincide with departures from weak-form efficiency and to rank markets by relative efficiency. Overall, return predictability varies widely. The most efficient are the Turkish, UK, Hungarian and Polish markets; the least efficient are the Ukrainian, Maltese and Estonian stock markets. The global financial market crisis of 2007–2008 coincides with return predictability in the Croatian, Hungarian, Polish, Portuguese, Slovakian and UK stock markets. However, not all markets were affected: the crisis had little effect on weak-form efficiency in stock markets located in Greece, Latvia, Romania, Russia and Turkey.  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