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   41877篇
  免费   582篇
  国内免费   1篇
财政金融   7427篇
工业经济   2561篇
计划管理   6350篇
经济学   9447篇
综合类   829篇
运输经济   192篇
旅游经济   445篇
贸易经济   8203篇
农业经济   1330篇
经济概况   5004篇
信息产业经济   46篇
邮电经济   626篇
  2021年   150篇
  2020年   278篇
  2019年   460篇
  2018年   2791篇
  2017年   2565篇
  2016年   1737篇
  2015年   401篇
  2014年   680篇
  2013年   2693篇
  2012年   1185篇
  2011年   2748篇
  2010年   2485篇
  2009年   2250篇
  2008年   2228篇
  2007年   2507篇
  2006年   676篇
  2005年   910篇
  2004年   1037篇
  2003年   1072篇
  2002年   808篇
  2001年   538篇
  2000年   535篇
  1999年   475篇
  1998年   457篇
  1997年   445篇
  1996年   448篇
  1995年   384篇
  1994年   384篇
  1993年   424篇
  1992年   422篇
  1991年   412篇
  1990年   335篇
  1989年   311篇
  1988年   300篇
  1987年   309篇
  1986年   327篇
  1985年   480篇
  1984年   449篇
  1983年   415篇
  1982年   384篇
  1981年   356篇
  1980年   398篇
  1979年   329篇
  1978年   277篇
  1977年   264篇
  1976年   204篇
  1975年   246篇
  1974年   194篇
  1973年   190篇
  1972年   133篇
排序方式: 共有10000条查询结果,搜索用时 546 毫秒
981.
Asset backed commercial paper, or ABCP for short, is commercial paper that is issued by a special purpose corporation against undivided interests in corporate receivables, including retail, trade, or export receivables. Since the inception of the market in 1983, the volume of ABCP has grown to represent about 16% of the total commercial paper market.
ABCP is a valuable source of liquidity for companies that generate a steady flow of quality receivables. Many ABCP programs restrict purchases to companies with investment grade ratings. For such companies, ABCP may help diversify funding sources and allow the firms to lower their funding costs by arbitraging different markets. But ABCP programs can also prove a low-cost source of funding for companies that either do not have access to the CP market through their own balance sheets or have used up their prime CP and bank borrowing capacity. ABCP is also an important source of funds for smaller companies requiring liquidity to support rapid growth.
ABCP programs can be viewed as "synthetic" revolving bank credit facilities in the sense that they can provide the same flow of funds as revolving credits by using a vehicle constructed specifically to refinance pools of receivables. The benefits of ABCP relative to bank lines of credit may take the form of either lower interest rates, less restrictive financial covenants, or both. Although ABCP is at best a partial substitute for bank credit, the liquidity provided by an asset backed commercial paper program can be used to hold down the costs of bank borrowing.  相似文献   
982.
We apply the modified rescaled range test to the return series of 1,952 common stocks. The results indicate that long memory is not a widespread characteristic of these stocks. But logit models of the event of a test rejection reveal that rejections are linked to firms with large risk-adjusted average returns. The maximal moment of a return distribution is also found to influence the event of a rejection, but not in a way suggestive of moment-condition failure. Evidence suggestive of survivorship bias is also uncovered. We conclude that there is some evidence consistent with persistent long memory in the returns of a small proportion of stocks.  相似文献   
983.
984.
This study sought to measure the economic consequences of reduced expenditure on specific sections of the UK National Measurement System (NMS), part of the state-funded technological infrastructure. A method was developed which can be adapted to any publicly or privately financed R&D of which the benefits and cost-effectiveness are unclear or contested.
The recent interactions between the NMS and industry were investigated empirically. Five mechanisms were found to account for the majority of instances of successful value creation. Several case studies of each mechanism were collected, illustrating their existence beyond reasonable doubt.
Each of the cut projects would have been expected to have encouraged growth and profitability in identified sectors of the economy through one or more of these five mechanisms. The effects of the cuts were modelled over 30 years. Compared to the costs of the cut projects projected over the same period, the benefits to the economy were predicted to exceed the costs.  相似文献   
985.
In a two-country model with mobile capital we analyse decentralized social insurance policies. These policies are a compromise between the preferences of workers and capital owners. Due to wage bargaining, worker-based social insurance contributions are borne by capital owners. These contributions affect the profitability of investment, and consequently the direction and size of capital flows. Countries will take account of these effects in determining social insurance policy. Noncooperative decision making results in tax competition and an underprovision of social insurance. In addition, increasing economic integration, represented by increasing capital mobility, could imply a divergence of social insurance levels in the two countries.  相似文献   
986.
This article examines failure rates in de novo S&Ls that initiated operations during the 1980–1986 period. Overall failure rates are similar to those for existing institutions but are found to vary significantly by location, time of charter, and organizational form. Both univariate tests and results from a probability-of-failure model indicate that inadequate capital, economic stress, poor management of higher risk lending allowed by broader powers, and operating inefficiencies contributed significantly to the likelihood of failure. Use of brokered funds and rapid asset growth are also significantly related to failure likelihood. Interestingly, for those S&Ls which eventually failed, rapid asset growth and high proportions of nonperforming assets actually delayed the timing of their failure. We interpret this to be the result of regulatory forbearance. We also find significant differences between the financial characteristics of de novo and non-de novo S&Ls.  相似文献   
987.
We use stochastic dominance to test whether investor should prefer riskier securities as the investment horizon lengthens. Return distributions for stocks, bonds, and U.S. Treasury bills are generated for holding periods of one to 25 years by simulation. For each holding period, stochastic dominance tests are run to establish preferences between the alternative security classes. Contrary to previous mean-variance based studies, we find no evidence that high-risk securities (stocks) dominate low-risk securities (bonds, Treasury bills) as the investment horizon lengthens. However, we do find that corporate bonds systematically dominate government bonds.  相似文献   
988.
Correlation estimates for returns between individual properties are subject to large inherent uncertainties due to limits on the amount of data that is likely to be available for the foreseeable future. After allowance for correlation sampling error, it is impossible to distinguish on an ex ante basis between the risk-reduction capabilities of mean-variance portfolio selection models and naive diversification without regard to property type or geographical location. The naive portfolio diversification strategies of typical institutional real estate portfolio managers are rational responses to limitations on the informational content of statistical analyses of historical real estate data.  相似文献   
989.
Risk aversion, liquidity, and endogenous short horizons   总被引:1,自引:0,他引:1  
We analyze a competitive model in which different informationsignals get reflected in value at different points in time.If investors are sufficiently risk averse, we obtain an equilibriumin which all investors focus exclusively on the short term.In addition, we show that increasing the variance of informationlesstrading increases market depth but causes a greater proportionof investors to focus on the short-term signal, which decreasesthe informativeness of prices about the long run. Finally, wealso explore parameter spaces under which long-term informedagents wish to voluntarily disclose their information.  相似文献   
990.
This article examines the stock-price effects of top managementturnover announcements for 432 Japanese corporations from 1985to 1990. We find that these announcements are associated withsignificantly positive abnormal returns. The returns are greaterwhen turnover is forced than when turnover represents normalsuccession. The stock-price effects are also significantly positivewhen turnover is forced and the successor is appointed fromoutside the firm. We find that large shareholders play an importantrole during outside succession. This evidence suggests thatthe disciplinary decisions of Japanese governance mechanismsare consistent with shareholder wealth maximization.  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