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   15455篇
  免费   326篇
财政金融   2972篇
工业经济   1301篇
计划管理   2593篇
经济学   3261篇
综合类   160篇
运输经济   120篇
旅游经济   272篇
贸易经济   2298篇
农业经济   713篇
经济概况   2087篇
信息产业经济   1篇
邮电经济   3篇
  2021年   104篇
  2020年   172篇
  2019年   222篇
  2018年   329篇
  2017年   311篇
  2016年   290篇
  2015年   201篇
  2014年   335篇
  2013年   1622篇
  2012年   456篇
  2011年   463篇
  2010年   443篇
  2009年   515篇
  2008年   445篇
  2007年   382篇
  2006年   353篇
  2005年   288篇
  2004年   305篇
  2003年   307篇
  2002年   296篇
  2001年   296篇
  2000年   329篇
  1999年   288篇
  1998年   268篇
  1997年   278篇
  1996年   257篇
  1995年   234篇
  1994年   231篇
  1993年   271篇
  1992年   247篇
  1991年   253篇
  1990年   237篇
  1989年   220篇
  1988年   210篇
  1987年   187篇
  1986年   216篇
  1985年   294篇
  1984年   271篇
  1983年   273篇
  1982年   226篇
  1981年   222篇
  1980年   241篇
  1979年   201篇
  1978年   173篇
  1977年   165篇
  1976年   145篇
  1975年   131篇
  1974年   112篇
  1973年   111篇
  1972年   84篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
991.
The Securities and Exchange Commission is currently reviewing Rule 12b‐1, which governs how fund advisors may pay for the distribution of fund shares. We provide evidence that even after adjusting for economies of scale, funds with 12b‐1 fees have higher expense ratios net of the 12b‐1 fees than do funds without such fees. This finding suggests that 12b‐1 fees are more than just a deadweight cost. We also demonstrate that 12b‐1 fees are highest for funds that ultimately fail, that the proportion of funds with 12b‐1 fees is increasing over time, and that the level of those fees is also increasing over time.  相似文献   
992.
ECONOMIC GROWTH, CONVERGENCE CLUBS, AND THE ROLE OF FINANCIAL DEVELOPMENT   总被引:7,自引:0,他引:7  
This paper aims to show and test the existence of a povertytrap linked to the development of the banking sector. Our theoreticalmodel exhibits multiple steady state equilibria due to a reciprocalexternality between the banking sector and the real sector.Growth in the real sector causes the financial market to expand,thereby increasing banking competition and efficiency. In return,the development of the banking sector raises the net yield onsavings and enhances capital accumulation and growth. The aimof our econometric tests is to check the existence of multiplesteady states associated with financial and educational development.  相似文献   
993.
The degree of participation in state lotteries can either increase or decrease expected returns. It is theoretically possible for unfair bets to become more than fair as participation in lotteries changes. In addition, the purchase of every combination of numbers can be more than a fair bet and such a purchase may increase the expected return to other lottery players.  相似文献   
994.
A significant recent development has been the extension of marketprocesses to activities which were previously provided by thepublic sector. A central feature of newly privatised marketsis the emergence of widespread forms of contracting. Explicitcontracting is used where in the past transactions had takenplace internally within a public enterprise of a governmentdepartment. The design of efficient forms of contracting hasbeen an essential component of the development of new marketsand quasi-markets such as those in defence and health. Thispaper examines evidence of the structure of contracts and theextent to which they contribute to or detract from the efficientoperation of markets, discusses the role of contracts in somenewly emerging markets, and evaluates contracts in utilitieswhere regulation rather than competition policy is widespread.  相似文献   
995.
This paper presents empirical test results of alternative hypotheses regarding differences in returns to shareholders of bidding firms that choose different payment methods (cash or securities). The evidence is consistent with the payment method signaling hypothesis, which asserts that when management of the bidding firm believes its own stock to be overvalued (undervalued), securities (cash) will be the preferred payment method. The results are not consistent with either the overpayment hypothesis or the present value/hubris hypothesis. The findings also explain the conflicting results reported in prior work on gains to bidding firms.  相似文献   
996.
997.
Derivative mortgage securities have proliferated since planned amortization and floating rate CMO classes were introduced in late 1986. Other recently created derivative securities include reverse floaters and deep-discount bonds of CMOs, CMO residuals, and stripped and senior/subordinated passthroughs. These securities, which are derived from fixed-rate mortgages, were created to meet investor demands for maturity certainly, interest rate and prepayment hedging, and enhanced credit. The rapid growth of derivative securities reflects expansion of the investor base for fixed-rate mortgages. It also suggests that these mortgages will continue to be a viable housing finance instrument in a volatile interest rate environment. For the future, the increased creation of derivative securities will make the secondary mortgage market more efficient, facilitating the funding of fixed-rate mortgage originations.The substance of this paper was originally written in late 1987 and many of the specific data reflect that time period.  相似文献   
998.
Individual investors are undiversified, holding on average less than four securities in their personal portfolios. The small firm literature focuses on CAPM (systematic risk, full diversification concept) premia, and the actual performance of small firm portfolios held by investors is overstated because of the presence of unsystematic risk. This paper illustrates the magnitudes of total risk for small and large firms, and the behavior of such measures as portfolio size is altered. Small firms contain more risk as shown by the finding that a diversified portfolio of small firms has greater variability than a single, typical large firm. While small firms outperform large firms, investors should be aware of the implications for small firm undiversified portfolios. Because small firms contain large amounts of unsystematic risk, diversification is important if investors are going to capture the small firm premia reported in the literature.  相似文献   
999.
1000.
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