全文获取类型
收费全文 | 138503篇 |
免费 | 3963篇 |
国内免费 | 2篇 |
专业分类
财政金融 | 26097篇 |
工业经济 | 11861篇 |
计划管理 | 22132篇 |
经济学 | 29618篇 |
综合类 | 1483篇 |
运输经济 | 1033篇 |
旅游经济 | 2707篇 |
贸易经济 | 24016篇 |
农业经济 | 6176篇 |
经济概况 | 17095篇 |
信息产业经济 | 7篇 |
邮电经济 | 243篇 |
出版年
2021年 | 861篇 |
2020年 | 1693篇 |
2019年 | 2496篇 |
2018年 | 2434篇 |
2017年 | 2634篇 |
2016年 | 2792篇 |
2015年 | 2142篇 |
2014年 | 3518篇 |
2013年 | 15755篇 |
2012年 | 4342篇 |
2011年 | 4297篇 |
2010年 | 3834篇 |
2009年 | 4464篇 |
2008年 | 4018篇 |
2007年 | 3357篇 |
2006年 | 3652篇 |
2005年 | 3624篇 |
2004年 | 3180篇 |
2003年 | 2939篇 |
2002年 | 2938篇 |
2001年 | 2650篇 |
2000年 | 2558篇 |
1999年 | 2465篇 |
1998年 | 2305篇 |
1997年 | 2337篇 |
1996年 | 2204篇 |
1995年 | 2009篇 |
1994年 | 2025篇 |
1993年 | 1992篇 |
1992年 | 2051篇 |
1991年 | 1952篇 |
1990年 | 1821篇 |
1989年 | 1677篇 |
1988年 | 1625篇 |
1987年 | 1615篇 |
1986年 | 1709篇 |
1985年 | 2479篇 |
1984年 | 2347篇 |
1983年 | 2159篇 |
1982年 | 2020篇 |
1981年 | 1942篇 |
1980年 | 1920篇 |
1979年 | 1860篇 |
1978年 | 1638篇 |
1977年 | 1634篇 |
1976年 | 1390篇 |
1975年 | 1283篇 |
1974年 | 1198篇 |
1973年 | 1196篇 |
1972年 | 902篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
This paper uses a reduced‐form approach to derive a closed‐form pricing formula for defaultable bonds. The authors specify the default hazard rate as an affine function of multiple variables which follow the Lévy jump‐diffusion processes. Because such specification allows greater flexibility in the generation of a valid probability of default, their pricing model should be more accurate than the valuation models in traditional studies, which ignore the jump effects. This paper also proposes a new method for estimating the parameters in a Lévy Jump‐diffusion process. The real data from the Taiwanese bond market are used to illustrate how their model can be applied in practical situations. The authors compare the pricing results for the influential variables with no jump effects, with jump magnitudes following the normal distribution, and with jump magnitudes following the gamma distribution. The results reveal that the predictive ability is the best for the model with the jump components. The valuation model shown in this paper should help portfolio managers more accurately price defaultable bonds and more effectively hedge their portfolio holdings. 相似文献
122.
This study examines the association between auditors' litigation risk and audit firm attributes. Using professional liability insurance premiums as a proxy for auditors' litigation risk, we present evidence that the risk is lower in audit firms having: (1) separate non-audit and audit divisions; (2) a higher proportion of partners; and (3) a higher annual growth in number of CPAs employed. Additionally, we find that the risk is higher in audit firms having: (1) operating losses; and (2) high revenue growth. Our results are consistent with the idea that audit firms' financial condition and organizational structure affect their independence/ expertise, and, in turn, their litigation risk. Our results are broadly supportive of the PCAOB's (2015) and US Department of Treasury's (2008) views that investors, audit committees, management, and other regulators could benefit from having access to financial and organizational information about audit firms. 相似文献
123.
Public pension burdens in most emerging Asian economies are still relatively small. However, there are a number of reasons to believe that they will increase markedly in the coming years. First, many Asian economies will face rapidly ageing populations, which will raise pension and other old‐age‐related spending dramatically. Second, as economies develop, political pressures to expand the coverage of public pensions and raise pension benefits will likely increase. The first objective of this paper is to identify the potential fiscal burden of public pensions in 23 emerging Asian economies, based on econometric models and forecasts of GDP and demographic trends. Using two different methodologies yields estimated increases in the average share of public pension expenditures in GDP of 1.0 percentage point and 3.6 percentage points by 2030 compared with current levels. We believe the latter estimate is more realistic. The second objective is to recommend policies to provide adequate funding for public pension needs, including enhancing the efficiency of social insurance programs, improving the balance of revenues and expenditures, implementing more explicit fiscal rules and frameworks, and establishing stronger fiscal surveillance at the national and regional levels. 相似文献
124.
125.
Small Business Economics - The human personality predicts a wide range of activities and occupational choices—from musical sophistication to entrepreneurial careers. However, which method... 相似文献
126.
Using a panel dataset of 105 developing countries for the period 2003–15, this paper assesses the effects of Aid for Trade (AfT) on greenfield FDI flows to the aid‐recipient countries. Particularly, this paper classifies the total dollar value of greenfield FDI flows to each recipient country in terms of four different layers: the extensive and intensive margins of projects as well as the extensive and intensive margins of source countries. Applying the system GMM estimator, this paper finds that AfT not only increases the dollar value of FDI flows to the recipient countries but also helps diversify the greenfield projects and source countries. In addition, this paper finds that AfT has a greater effect for greenfield FDI from donor (developed) countries than from non‐donor (developing) countries. Among the three components of AfT, aid for trade‐related infrastructure and aid for trade policy regulations are found to have positive links with greenfield FDI, irrespective of source‐country groups, yet their effects are larger for developed source countries. In contrast, aid for building productive capacity hinders greenfield FDI flows from non‐donor countries, while it promotes greenfield FDI from donor countries. We offer some explanations for this finding. 相似文献
127.
This paper applies the Least Absolute Shrinkage and Selection Operator (LASSO) to make rolling one‐minute‐ahead return forecasts using the entire cross‐section of lagged returns as candidate predictors. The LASSO increases both out‐of‐sample fit and forecast‐implied Sharpe ratios. This out‐of‐sample success comes from identifying predictors that are unexpected, short‐lived, and sparse. Although the LASSO uses a statistical rule rather than economic intuition to identify predictors, the predictors it identifies are nevertheless associated with economically meaningful events: the LASSO tends to identify as predictors stocks with news about fundamentals. 相似文献
128.
129.
130.
Burton G. Malkiel 《European Financial Management》2003,9(1):1-10
This paper presents the case for and the evidence in favour of passive investment strategies and examines the major criticisms of the technique. I conclude that the evidence strongly supports passive investment management in all markets—small–capitalisation stocks as well as large–capitalisation equities, US markets as well as international markets, and bonds as well as stocks. Recent attacks on the efficient market hypothesis do not weaken the case for indexing. 相似文献