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   17079篇
  免费   538篇
财政金融   3103篇
工业经济   1115篇
计划管理   2873篇
经济学   4152篇
综合类   541篇
运输经济   201篇
旅游经济   304篇
贸易经济   2693篇
农业经济   781篇
经济概况   1840篇
邮电经济   14篇
  2023年   127篇
  2021年   142篇
  2020年   284篇
  2019年   387篇
  2018年   520篇
  2017年   608篇
  2016年   494篇
  2015年   329篇
  2014年   462篇
  2013年   2164篇
  2012年   513篇
  2011年   533篇
  2010年   524篇
  2009年   476篇
  2008年   498篇
  2007年   405篇
  2006年   311篇
  2005年   311篇
  2004年   296篇
  2003年   308篇
  2002年   304篇
  2001年   317篇
  2000年   346篇
  1999年   257篇
  1998年   269篇
  1997年   276篇
  1996年   235篇
  1995年   242篇
  1994年   240篇
  1993年   286篇
  1992年   258篇
  1991年   242篇
  1990年   220篇
  1989年   187篇
  1988年   178篇
  1987年   170篇
  1986年   183篇
  1985年   246篇
  1984年   304篇
  1983年   256篇
  1982年   247篇
  1981年   263篇
  1980年   235篇
  1979年   242篇
  1978年   201篇
  1977年   189篇
  1976年   171篇
  1975年   136篇
  1974年   140篇
  1973年   126篇
排序方式: 共有10000条查询结果,搜索用时 28 毫秒
971.
Expected Option Returns   总被引:12,自引:0,他引:12  
This paper examines expected option returns in the context of mainstream asset-pricing theory. Under mild assumptions, expected call returns exceed those of the underlying security and increase with the strike price. Likewise, expected put returns are below the risk-free rate and increase with the strike price. S&P index option returns consistently exhibit these characteristics. Under stronger assumptions, expected option returns vary linearly with option betas. However, zero-beta, at-the-money straddle positions produce average losses of approximately three percent per week. This suggests that some additional factor, such as systematic stochastic volatility, is priced in option returns.  相似文献   
972.
Since the Asian financial crisis of the late 1990's, there have been numerous calls for the reform of East Asian corporate governance. Without reform, fears abound that the crisis will return. However, a baseline understanding of corporate governance in East Asia needs to be established before reform efforts can begin. In the West, three major functions of boards are commonly recognized: resource dependence, service, and control. These functions have yet to be examined in the context of boards of directors of Overseas Chinese firms in East Asia. In this exploratory study, we examine the extent to which these functions are performed, primarily by outside board members, in Overseas Chinese firms in Hong Kong and Taiwan. We find that the service and control functions are less pronounced for East Asian boards than what would be expected in the West, while the resource dependence function is more pronounced. We also findthat the governance of the region is being moved closer to international practices by a new generation of leaders that have been exposed to Western influences and intense global competition. The implications of our findings for managers, educators, and researchers are discussed.  相似文献   
973.
Revenue Sharing and Vertical Control in the Video Rental Industry   总被引:43,自引:0,他引:43  
Revenue sharing contracts, in which retailers pay a royalty on sales to their suppliers, are now widely used in the video rental industry. We show that revenue sharing is valuable in vertically separated industries in which demand is either stochastic (unpredictable) or variable (e.g., systematically declining), downstream inventory is chosen before demand is realized and downstream firms engage in intrabrand competition. Unlike two-part tariffs, revenue sharing achieves the first best outcome by softening retail price competition without distorting retailers' inventory decisions. Our theories are also consistent with trends in prices and availability following retailers' adoption of revenue sharing contracts.  相似文献   
974.
While the theoretical relation between taxes and capital structurehas been extensively analyzed, the empirical evidence on thisissue has thus far been inconclusive. One of the main difficultiesconfronting previous empirical studies of the cross-sectionalrelationship between taxes and leverage was the control of interveningvariables. The Tax Reform Act of 1986 (TRA), which drasticallychanged the tax regime, provides a unique opportunity to assessthe interaction between taxes and leverage decisions in a controlledenvironment. We test the relationship between leverage and certaintax-related variables for a large sample of companies in theyears surrounding the enactment of the TRA. The results supportthe tax-based theories of capital structure. The findings indicatethat there exists a substitution effect between debt and nondebttax shields, and that both corporate and personal tax ratesaffect leverage decisions.  相似文献   
975.
Throughout the twentieth century governments have been spendingever larger proportions of national income. Three issues arisein discussions about the growth of such spending as it pertainsto developing countries: How does it compare with expenditurein industrial nations? What explains the growth in spendingby developing country governments? And what are the effectson economic growth? Government expenditure as a share of GDPin low- and middle-income countries, on average, is lower thancomparable shares in industrial market economies and, with fewexceptions, is growing. Many factors, including ideology, demographics,a positive income elasticity for public goods, the rising costof public goods relative to private goods, and perhaps developmenttheory and practice, explain this growth. As for the relationshipbetween government expenditure and economic growth, the empiricalevidence does not reveal any strong correlation. The size ofgovernment may engender strong ideological debate, but the positionthat the aggregate level of government expenditure is a significantdeterminant of growth rates receives little support.   相似文献   
976.
I examine the structure of corporate ownership in a sample of Japanese firms in the mid 1980s. Ownership is highly concentrated in Japan, with financial institutions by far the most important large shareholders. Ownership concentration in independent Japanese firms is positively related to the returns from exerting greater control over management. This is not the case in firms that are members of corporate groups (keiretsu). Ownership concentration and the accounting profit rate in both independent and keiretsu firms are unrelated. The results are consistent with the notion that there exist two distinct corporate governance systems in Japan —one among independent firms and the other among firms that are members of keiretsu.  相似文献   
977.
We analyze personal open market trades by managers around stock repurchases by tender offer. With the exception of Dutch auction offers, managers trade their firm's shares prior to repurchase announcements as though repurchases convey favorable inside information to outsiders. Prior to fixed price repurchase offers that do not follow takeover-related events, managers increase their buying and reduce their selling of their firm's shares. Prior to repurchases that follow takeover-related events, only a decrease in selling is found. No abnormal trading precedes Dutch auction repurchase offers.  相似文献   
978.
Predicting Commercial Mortgage Foreclosure Experience   总被引:5,自引:0,他引:5  
This study has two objectives: (1) it directly evaluates the relationship between commercial mortgage default incidence and characteristics of the mortgage, borrower, property, market, and general economic conditions, and (2) it uses this relationship to predict the exposure of life insurers to future mortgage defaults and to examine the relative importance of various causes of current and past credit quality problems. A theoretical model of the default decision predicts that the decision would be expected to be driven primarily by the borrower's current equity stake in the property, or the ratio of the market value of the loan to property value (Mt/Vt), but that the presence and magnitude of transaction costs associated with default would be expected to result in underexercise of the default option. Empirical estimation making use of American Council of Life Insurance (ACLI) and National Council of Real Estate Investment Fiduciaries (NCREIF) data confirms both expectations. A high proportion of the longitudinal variation in foreclosure incidence is explained by variations in Mt/Vt, but even at high ratios Mt/Vt in excess of 1.1. only 5% to 8% of mortgagors default, although this magnitude of underexercise is probably overstated because of problems in measuring Mt and for other reasons. Simulations using the model provide a pessimistic outlook for future defaults. Default rates are predicted to double in the five-year period 1988–93. Other simulations examine the relative importance of interest rate fluctuations, property value declines, and geographic or temporal correlations in lending during the 1976–88 period on current default experience.  相似文献   
979.
One advantage of having an online shopping village attached to your not-for-profit organization's Web site is it gets supporters used to contributing online. If a consumer is willing to purchase over the Web, it's only a short leap to putting donations more directly to work for a favorite cause.  相似文献   
980.
A number of studies have used the Capital Asset Pricing Model (CAPM) to integrate product market and financial theories of the firm. We reexamine the relationship between product market structure and systematic risk at the firm and industry level. We show that theory yields no testable implications at the firm level. We show, however, that there is a relationship between the intraindustry dispersion of systematic risk and industry concentration which depends on the causes and consequences of concentration. Estimates of the relationship between the intraindustry variance of and concentration for a 1987 cross-section of U.S. industries suggest that concentration allows larger firms to exercise market power.  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