全文获取类型
收费全文 | 53450篇 |
免费 | 760篇 |
专业分类
财政金融 | 8613篇 |
工业经济 | 3191篇 |
计划管理 | 9154篇 |
经济学 | 12357篇 |
综合类 | 785篇 |
运输经济 | 261篇 |
旅游经济 | 488篇 |
贸易经济 | 10211篇 |
农业经济 | 1705篇 |
经济概况 | 6622篇 |
信息产业经济 | 46篇 |
邮电经济 | 777篇 |
出版年
2021年 | 221篇 |
2020年 | 429篇 |
2019年 | 666篇 |
2018年 | 2879篇 |
2017年 | 2707篇 |
2016年 | 1910篇 |
2015年 | 656篇 |
2014年 | 1115篇 |
2013年 | 3828篇 |
2012年 | 1666篇 |
2011年 | 3029篇 |
2010年 | 2760篇 |
2009年 | 2662篇 |
2008年 | 2479篇 |
2007年 | 2674篇 |
2006年 | 1081篇 |
2005年 | 1234篇 |
2004年 | 1171篇 |
2003年 | 1290篇 |
2002年 | 910篇 |
2001年 | 812篇 |
2000年 | 751篇 |
1999年 | 647篇 |
1998年 | 684篇 |
1997年 | 657篇 |
1996年 | 639篇 |
1995年 | 549篇 |
1994年 | 545篇 |
1993年 | 577篇 |
1992年 | 621篇 |
1991年 | 606篇 |
1990年 | 566篇 |
1989年 | 461篇 |
1988年 | 455篇 |
1987年 | 453篇 |
1986年 | 469篇 |
1985年 | 589篇 |
1984年 | 587篇 |
1983年 | 541篇 |
1982年 | 491篇 |
1981年 | 502篇 |
1980年 | 465篇 |
1979年 | 492篇 |
1978年 | 394篇 |
1977年 | 373篇 |
1976年 | 350篇 |
1975年 | 283篇 |
1974年 | 275篇 |
1973年 | 271篇 |
1972年 | 233篇 |
排序方式: 共有10000条查询结果,搜索用时 9 毫秒
101.
This article examines the puzzle of why futures prices continue to react to USDA crop reports despite the fact that reports appear to be no longer "newsworthy," that is, provide no better production estimates than private forecasts. The information value of reports is measured in terms of their influence on rational agents' harvest-time corn price expectations, which are uncovered using a Hamilton-type modeling approach. Results show that reports are still "newsworthy," as they would contribute to agents' price expectations if released a day early. Thus futures price reactions, which closely reflect price expectations, are rational and consistent with efficient markets hypothesis. 相似文献
102.
Common sense tells us that the future is an essential element in any strategy. In addition, there is a good deal of literature on scenario planning, which is an important tool in considering the future in terms of strategy. However, in many organizations there is serious resistance to the development of scenarios, and they are not broadly implemented by companies. But even organizations that do not rely heavily on the development of scenarios do, in fact, construct visions to guide their strategies. But it might be asked, what happens when this vision is not consistent with the future? To address this problem, the present article proposes a method for checking the content and consistency of an organization's vision of the future, no matter how it was conceived. The proposed method is grounded on theoretical concepts from the field of future studies, which are described in this article. This study was motivated by the search for developing new ways of improving and using scenario techniques as a method for making strategic decisions. The method was then tested on a company in the field of information technology in order to check its operational feasibility. The test showed that the proposed method is, in fact, operationally feasible and was capable of analyzing the vision of the company being studied, indicating both its shortcomings and points of inconsistency. 相似文献
103.
104.
Wendy van der Valk 《Industrial Marketing Management》2008,37(3):301-315
An increasing part of companies' purchasing expenditures is being spent on (business) services. At the same time, the interactive character of business services has so far largely been neglected in purchasing and supply management studies. The success of a service purchase is however established during the ongoing production and consumption of that service, which takes place in continuous interaction between buyer and seller.This paper investigates these ongoing interactive processes between buyer and seller after the purchase decision has been made. The specific focus is on services buying by manufacturers, since manufacturers' services spend increasingly encompasses services that eventually become part of the final offering to customers. This is expected to pose specific challenges for manufacturing companies, who have traditionally been involved with purchasing goods.Case studies into ongoing buyer-seller interaction are conducted at three manufacturing companies. Starting from a usage-based classification which contains four types of business services, four services are studied at each manufacturing company. The results show that indeed the different types of services can be associated with distinct patterns of ongoing interaction. Furthermore, the results provide initial support for the idea that having differentiated patterns of interaction contributes to successful ongoing service exchange. 相似文献
105.
Ines Lindner 《Economic Theory》2008,35(3):607-611
We extend Condorcet’s Jury Theorem (Essai sur l’application de l’analyse à la probabilité des décisions rendues à la pluralité
des voix. De l’imprimerie royale, 1785) to weighted voting games with voters of two kinds: a fixed (possibly empty) set of
‘major’ voters with fixed weights, and an ever-increasing number of ‘minor’ voters, whose total weight is also fixed, but
where each individual’s weight becomes negligible. As our main result, we obtain the limiting probability that the jury will
arrive at the correct decision as a function of the competence of the few major players. As in Condorcet’s result the quota
q = 1/2 is found to play a prominent role.
I wish to thank Maurice Koster, Moshé Machover, Guillermo Owen and two anonymous referees for helpful comments. 相似文献
106.
107.
Background risk can influence the performance of insurance markets that must deal with adverse selection when applicants are risk vulnerable, since they are more averse to bearing the insurable risk as a result of their exposures to background risk. We show that background risk always results in a lower deductible for the incentive constrained contract, and that a broader range of markets attains the stable sequential equilibrium cross-subsidized pair of separating contracts. We conclude that background risk always improves the performance of markets for coverage against (insurable) foreground risks that must deal with adverse selection. We also find, however, that these improvements are never sufficient to offset the cost to insureds of bearing the background risk. 相似文献
108.
109.
Neoclassical growth models predict that reductions in capital or labor income tax rates are expansionary when lump-sum transfers are used to balance the government budget. This paper explores the consequences of bond-financed tax reductions that bring forth a range of possible offsetting policies, including future government consumption, capital tax rates, or labor tax rates. Through the resulting intertemporal distortions, current tax cuts can be expansionary or contractionary. The paper also finds that more aggressive responses of offsetting policies to debt engender less debt accumulation and less costly tax cuts. 相似文献
110.
Andrew Prevost Ramesh P. Rao & John D. Wagster 《Journal of Business Finance & Accounting》2002,29(7&8):1079-1104
On April 1, 1988, New Zealand stopped the double taxation of dividends by implementing a full dividend imputation program. Because many believed that the tax advantage of debt had led to more highly leveraged firms subject to greater financial risk than was socially optimal, it was hoped the removal of incentives to finance with debt would result in a more efficient allocation of capital. The empirical results suggest that the shareholder wealth gain from dividend imputation was more than offset in firms with large debt levels. Moreover, an examination of debt ratios indicates debt levels declined in the post–imputation period. 相似文献