全文获取类型
收费全文 | 19328篇 |
免费 | 76篇 |
国内免费 | 24篇 |
专业分类
财政金融 | 2976篇 |
工业经济 | 875篇 |
计划管理 | 3113篇 |
经济学 | 4320篇 |
综合类 | 823篇 |
运输经济 | 13篇 |
旅游经济 | 23篇 |
贸易经济 | 4866篇 |
农业经济 | 155篇 |
经济概况 | 1648篇 |
信息产业经济 | 44篇 |
邮电经济 | 572篇 |
出版年
2024年 | 3篇 |
2023年 | 17篇 |
2022年 | 41篇 |
2021年 | 76篇 |
2020年 | 53篇 |
2019年 | 42篇 |
2018年 | 2338篇 |
2017年 | 2105篇 |
2016年 | 1263篇 |
2015年 | 176篇 |
2014年 | 225篇 |
2013年 | 268篇 |
2012年 | 627篇 |
2011年 | 2219篇 |
2010年 | 2036篇 |
2009年 | 1694篇 |
2008年 | 1703篇 |
2007年 | 2021篇 |
2006年 | 210篇 |
2005年 | 534篇 |
2004年 | 517篇 |
2003年 | 580篇 |
2002年 | 277篇 |
2001年 | 92篇 |
2000年 | 69篇 |
1999年 | 21篇 |
1998年 | 29篇 |
1997年 | 16篇 |
1996年 | 23篇 |
1995年 | 5篇 |
1994年 | 11篇 |
1993年 | 8篇 |
1992年 | 12篇 |
1991年 | 7篇 |
1990年 | 4篇 |
1989年 | 5篇 |
1988年 | 4篇 |
1987年 | 2篇 |
1986年 | 21篇 |
1985年 | 9篇 |
1984年 | 8篇 |
1983年 | 8篇 |
1982年 | 7篇 |
1981年 | 6篇 |
1980年 | 10篇 |
1979年 | 5篇 |
1978年 | 4篇 |
1977年 | 7篇 |
1976年 | 2篇 |
1975年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
31.
32.
In this study, we investigate the effects of stock short-sale constraints on options trading by exploiting two US Securities and Exchange Commission rule changes under Regulation SHO: Rule 203 (locate and close-out requirements) and Rule 202T (temporary removal of short-sale price tests). We find that stock short selling activities decrease (increase) significantly after Rule 203 (Rule 202T) implementation, supporting the validity of Rule 203 (Rule 202T) as an exogenous increase (decrease) in short-sale constraints. Options volume increases significantly after Rule 203 went into effect and the result is more pronounced among firms with lower levels of institutional ownership and smaller options bid-ask spreads. Therefore, the evidence from Rule 203 suggests that investors may use options as substitutes for stock short sales when short selling is less feasible or more costly due to the locate and delivery requirements. In contrast, we find no significant change in the options trading volume of pilot stocks during the pilot program of Rule 202T. Overall, our results indicate that the impact of short-sale constraints on options trading varies with the types of constraints affected. 相似文献
33.
34.
The main purpose of this paper is to empirically model the influence of macroeconomic and financial variables on the performance
of risk capital in the US. We start our investigation using a static long-run equilibrium model. In contrast to previous studies,
we analyze the effect of several factors simultaneously within the framework of a vector error correction model (VECM). This
allows us to study short- and long-term interactions to overcome the problem of endogeneity, and to discover causal mechanisms.
The results show that the value of venture capital investments is positively related to industrial production, the exit channel
Nasdaq, and the long-term interest rate. However, the value of venture capital investments is negatively related to the short-term
interest rate. According to the short-term dynamics, VEC Granger causality confirms that only industrial production influences
venture capital performance, while venture capital returns Granger causes Nasdaq performance. 相似文献
35.
Dan Usher 《Atlantic Economic Journal》1995,23(1):17-22
The two principle institutions of Canada as it is today — bilingualism and federal government — are designed to accommodate
French-speaking people and English-speaking people within a single nation. Neither institution would be appropriate for the
largely English-speaking country that remains if Quebec secedes. In that event, English Canada should reorganize itself as
a unitary state with no constitutionally-sanctioned provinces at all. That would avoid the well-known inefficiencies of federal
government, the duplication of bureaucracy, and the needless tax competition among jurisdictions. A nationwide sharing community
would develop the common interest and common loyalty that an ethnically-diverse country such as English Canada requires for
self-preservation. Without Quebec, there would be no geographically-concentrated languages or cultures which the provinces
might conceivably protect. 相似文献
36.
37.
This article studies the repayment of regional debt in a multiregion economy with a central authority: Who pays the obligation issued by a region? With commitment, the central government will use its economy‐wide taxation power in support of its objective to smooth distortionary taxes and consumption across regions. Absent commitment, this tool of the central government may be exploited to induce it to bail out regional government deficits. We characterize the conditions under which bailouts occur and their welfare implications. In particular, we show when the gains from a federation may outweigh the welfare costs of a bailout. We use these insights to comment on actual fiscal relations in three quite different federations: the United States, the European Union, and Argentina. 相似文献
38.
Edward B. Barbier Mikołaj Czajkowski Nick Hanley 《Environmental and Resource Economics》2017,68(3):663-682
How willingness to pay for environmental quality changes as incomes rise is a central question in several areas of environmental economics. This paper explores both theoretically and empirically whether or not the willingness to pay (WTP) for pollution control varies with income. Our model indicates that the income elasticity of the marginal WTP for pollution reduction is only constant under very restrictive conditions. Our empirical analysis tests the null hypothesis that the elasticity of the WTP for pollution control with respect to income is constant, employing a multi-country contingent valuation study of eutrophication reduction in the Baltic Sea. Our findings reject this hypothesis, and estimate an income elasticity of the WTP for eutrophication control of 0.1–0.2 for low-income respondents and 0.6–0.7 for high-income respondents. Thus, our empirical results suggest that the elasticity is not constant but is always less than one. This has implications for how benefits transfer exercises, and for theoretical explanations of the environmental Kuznets curve. 相似文献
39.
Using daily data spanning 10 years, we establish a statistical relationship between episodic particulate-matter \((\hbox {PM}_{2.5})\) concentrations and vehicle trips in Cache Valley, Utah, and estimate an average gas-price elasticity for the region. We also estimate the benefits and costs associated with a seasonal gas tax set to reduce vehicle trips during the winter-inversion season and thereby lower health costs through concomitant decreases in the \(\hbox {PM}_{2.5}\) concentrations. We find a strong positive relationship between vehicle trips reduced and associated reductions in \(\hbox {PM}_{2.5}\) concentrations. Further, we estimate a mean gas price elasticity of approximately \(-\)0.3 in what we call a “high price variability environment.” Incorporating these results, cost-benefit analysis suggests that the social net benefit for Cache Valley associated with the imposition of a seasonal gas tax during the winter-inversion season is highly dependent upon the type of benefit estimation method used. 相似文献
40.
Paul van den Noord 《Empirica》2011,38(1):19-51
The fiscal cost of the financial and economic crisis in Europe is huge. The paper provides provisional estimates of this cost
and looks at its implications for the sustainability of public finances, taking into account also the impact of aging populations.
The historical experience suggests that economic growth is persistently lowered in the aftermath of financial crisis, making
fiscal consolidation more difficult yet all the more essential. Meanwhile the timing of the exit from fiscal stimulus and
subsequent fiscal consolidation must reconcile sustainability and stabilisation goals—a delicate balancing act. The paper
will argue in favour of structural reform to boost the economic growth potential alongside fiscal consolidation. The fiscal
coordination framework in the EU, together with the Europe 2020 strategy, is seen to underpin this approach. 相似文献