全文获取类型
收费全文 | 33469篇 |
免费 | 676篇 |
专业分类
财政金融 | 6064篇 |
工业经济 | 2437篇 |
计划管理 | 5672篇 |
经济学 | 7558篇 |
综合类 | 326篇 |
运输经济 | 227篇 |
旅游经济 | 527篇 |
贸易经济 | 5384篇 |
农业经济 | 1628篇 |
经济概况 | 4217篇 |
信息产业经济 | 3篇 |
邮电经济 | 102篇 |
出版年
2021年 | 219篇 |
2020年 | 385篇 |
2019年 | 591篇 |
2018年 | 660篇 |
2017年 | 710篇 |
2016年 | 699篇 |
2015年 | 492篇 |
2014年 | 771篇 |
2013年 | 3368篇 |
2012年 | 1066篇 |
2011年 | 1099篇 |
2010年 | 964篇 |
2009年 | 1063篇 |
2008年 | 1010篇 |
2007年 | 880篇 |
2006年 | 833篇 |
2005年 | 741篇 |
2004年 | 635篇 |
2003年 | 676篇 |
2002年 | 620篇 |
2001年 | 688篇 |
2000年 | 652篇 |
1999年 | 637篇 |
1998年 | 664篇 |
1997年 | 596篇 |
1996年 | 589篇 |
1995年 | 520篇 |
1994年 | 523篇 |
1993年 | 537篇 |
1992年 | 532篇 |
1991年 | 553篇 |
1990年 | 477篇 |
1989年 | 406篇 |
1988年 | 394篇 |
1987年 | 388篇 |
1986年 | 370篇 |
1985年 | 580篇 |
1984年 | 567篇 |
1983年 | 525篇 |
1982年 | 468篇 |
1981年 | 455篇 |
1980年 | 470篇 |
1979年 | 455篇 |
1978年 | 364篇 |
1977年 | 336篇 |
1976年 | 312篇 |
1975年 | 283篇 |
1974年 | 267篇 |
1973年 | 262篇 |
1972年 | 183篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
71.
Previous empirical research indicates that corporate insiders tend to increase (decrease) their shareholdings before events that increase (decrease) firm value. More recent evidence suggests, however, that passage of the Insider Trading Sanctions Act of 1984 (ITSA) may have deterred this behavior. Our results indicate that before passage of the ITSA, insiders exploited their access to nonpublic information by selling shares before the announcement of equity issues. However, after passage of the ITSA insiders no longer displayed this behavior. We conclude the ITSA has a deterrent effect, which is more heavily concentrated on insiders at the highest level of the firm who are most visible to regulators and other market participants. 相似文献
72.
Great variation in nursing resource use is documented within DRGs. Much of this variation may be explained by patient severity of illness. Variance in nursing resource use within DRGs can be reduced by using a severity of illness instrument to score patients. 相似文献
73.
74.
75.
Hypotheses which relate top-level managers' age, years of company and industry service, and education to strategic change are studied with a sample of 855 managers from 27 railroads. Results generally support hypotheses that younger managers and those with less experience are more likely to alter their strategies with changing environmental conditions. 相似文献
76.
This study examines effects of four combinations of accounting bases and service levels — GAAP and income tax bases, and audit and review service levels — on loan officers' decisions, both separately and in interaction. It examines effects on loan decisions and perceptions of interest rates, default risk, confidence, and usefulness. The interaction of accounting basis and service level significantly affects perceived confidence but does not affect other decisions. Accounting basis and service level separately affect interest rates, default risk, and report usefulness, but do not affect the loan decision. 相似文献
77.
Luisa Müller Dirk Schiereck Marc W. Simpson Christian Voigt 《Journal of Multinational Financial Management》2009,19(2):127-138
Kamstra et al. [Kamstra, M.J., Kramer, L.A., Levi, M.D., 2000. Losing sleep at the market: the daylight saving anomaly. The American Economic Review 90, 1005–1011] argue that the mean weekend return following the changes in daylight saving time is less than the mean weekend return throughout the rest of the year. Opposing studies, such as Pinegar [Pinegar, J.M., 2002. Losing sleep at the market: comment. The American Economic Review 92, 1251–1256), reason that the observed results depend upon methodology. We extend the ongoing discussions by providing further evidence for equity markets and bond markets in Germany and across Europe. We further demonstrate that the daylight saving effect does not serve as a potential rationale for the weekend effect. 相似文献
78.
Hélder Vasconcelos 《Journal of Economics & Management Strategy》2008,17(4):973-1010
The impact of demand growth on the collusion possibilities is investigated in a Cournot supergame where market growth may trigger future entry and the collusive agreement is enforced by the most profitable ‘grim trigger strategies’ available. It is shown that even in situations where perfect collusion can be sustained after entry, coping with a potential entrant in a market which is growing over time may completely undermine any pre‐entry collusive plans of the incumbent firms. This is because, before entry, a deviation and the following punishment phase may become more attractive thanks to their additional effect in terms of delaying entry. 相似文献
79.
Bayesian MCMC Mapping of Quantitative Trait Loci in a Half-sib Design: a Graphical Model Perspective
N.A. Sheehan B. Gulbrandtsen M.S. Lund D.A. Sorensen 《Revue internationale de statistique》2002,70(2):241-267
Graphical models provide a powerful and flexible approach to the analysis of complex problems in genetics. While task-specific software may be extremely efficient for any particular analysis, it is often difficult to adapt to new computational challenges. By viewing these genetic applications in a more general framework, many problems can be handled by essentially the same software. This is advantageous in an area where fast methodological development is essential. Once a method has been fully developed and tested, problem-specific software may then be required. The aim of this paper is to illustrate the potential use of a graphical model approach to genetic analyses by taking a very simple and well-understood problem by way of example. 相似文献
80.
Cross‐listings of equities internationally are becoming more common. Using data for Europe and North America, previous studies reject the order flow diversion hypothesis, which states that international cross‐listings reduce home‐country trading volume. We test this hypothesis using data for equities cross‐listed in Singapore and Malaysia. We find that trading volume in Malaysia fell 42.9% when Singapore markets were closed for holidays. Furthermore, we show that trading volume in Malaysia did not increase following the implementation of regulations that ended the trading of Malaysian equities in Singapore in 1998. Hence, we reject the order flow diversion hypothesis. 相似文献