全文获取类型
收费全文 | 1776篇 |
免费 | 54篇 |
专业分类
财政金融 | 368篇 |
工业经济 | 134篇 |
计划管理 | 326篇 |
经济学 | 391篇 |
综合类 | 11篇 |
运输经济 | 16篇 |
旅游经济 | 12篇 |
贸易经济 | 325篇 |
农业经济 | 62篇 |
经济概况 | 160篇 |
邮电经济 | 25篇 |
出版年
2023年 | 11篇 |
2021年 | 13篇 |
2020年 | 28篇 |
2019年 | 35篇 |
2018年 | 42篇 |
2017年 | 48篇 |
2016年 | 56篇 |
2015年 | 24篇 |
2014年 | 62篇 |
2013年 | 191篇 |
2012年 | 85篇 |
2011年 | 67篇 |
2010年 | 75篇 |
2009年 | 89篇 |
2008年 | 68篇 |
2007年 | 71篇 |
2006年 | 65篇 |
2005年 | 52篇 |
2004年 | 53篇 |
2003年 | 51篇 |
2002年 | 50篇 |
2001年 | 39篇 |
2000年 | 31篇 |
1999年 | 31篇 |
1998年 | 34篇 |
1997年 | 27篇 |
1996年 | 22篇 |
1995年 | 21篇 |
1994年 | 12篇 |
1993年 | 24篇 |
1992年 | 20篇 |
1991年 | 22篇 |
1990年 | 15篇 |
1989年 | 13篇 |
1988年 | 15篇 |
1987年 | 9篇 |
1985年 | 18篇 |
1984年 | 24篇 |
1983年 | 15篇 |
1982年 | 15篇 |
1981年 | 24篇 |
1980年 | 15篇 |
1979年 | 15篇 |
1978年 | 11篇 |
1977年 | 23篇 |
1976年 | 13篇 |
1975年 | 9篇 |
1974年 | 8篇 |
1973年 | 10篇 |
1972年 | 7篇 |
排序方式: 共有1830条查询结果,搜索用时 15 毫秒
141.
In recent months, the list of large diversified companies that have decided they would be worth more as several smaller, focused companies has grown sharply. In many of these cases, it has been outside pressure from activist investors that has motivated these actions by management—and with some pretty favorable results. But what is driving these strategic actions and what is most important in determining whether breakups create value? To answer this fundamental questions, it is critical to decide whether large, diversified companies have a value recognition problem or a value creation problem. In this article, the authors present and try to integrate the findings of two separate but related research studies on business diversity and size with the aim of identifying their implications for corporate strategy and helping company executives create more value for their investors. The specific reasons for underperformance by large diverse companies vary greatly, but there are a number of potential problems discussed in this article, including organizational “distance,” capital allocation, human capital allocation, cross subsidies, and ineffective governance. Instead of waiting for activist investors to demand a breakup, executives of large diverse companies should be proactive in addressing the potential weaknesses of their organizations. Private equity firms understand how to make diversification work and many of today's executives could learn some valuable lessons from these firms. Large diverse businesses should embrace “Internal Capitalism,” a corporate culture and set of practices that emphasizes the importance of strategic decision‐making that is linked through continuous performance assessment to the corporate goals of boosting efficiency and sustainable growth. 相似文献
142.
We examine the reasons why one might expect it to be more difficult to offshore professional work than manufacturing work in a globalized world. We then provide data on the variations in a specific case — the offshoring of diagnostic radiology from the USA, UK and Singapore. We show that existing theories on the ‘offshorability’ of jobs have not captured how national institutions and occupational regulations continue to define professional work. We then review the question of supply from India's perspective and report that both macro‐institutional and organizational contexts make it complicated for Indian doctors to supply much of this service. 相似文献
143.
144.
As recent research highlights that the Sharpe ratio has a decision theoretic foundation even in the case of asymmetric or fat-tailed excess returns and thus is adequate even for the evaluation of hedge funds, this note provides the first Sharpe ratio based performance analysis of the hedge fund market. Furthermore, it addresses the important practical question whether the choice of hypothesis test used to statistically compare Sharpe ratios can influence an investor’s hedge fund selection process. Our key findings are as follows: (i) Only a small fraction of hedge funds in our large dataset can significantly outperform passive investments in corresponding hedge fund indices. (ii) Especially in the presence of autocorrelated or skewed excess returns, the traditional test of Jobson and Korkie, 1981, Memmel, 2003 tends to overstate the number of significant outperformers and thus provides potentially misleading information for investors. Decision makers are advised to use the bootstrap test of Ledoit and Wolf (2008) allowing robust and more reliable inference. 相似文献
145.
Frank R. Lichtenberg 《Economics of Innovation and New Technology》2013,22(6):403-417
Importation of drugs into the US may soon become legal. Since prices of drugs are lower in most other countries than they are in the US, importation would result in a decline in US drug prices. The purpose of this paper is to assess the consequences of importation for new drug development. First, the author presents a simple theoretical model of drug development which suggests that the elasticity of innovation with respect to the expected price of drugs should be at least as great as the elasticity of innovation with respect to expected market size (disease incidence). Then, the cross-sectional relationship between pharmaceutical innovation and market size among a set of diseases (different types of cancer) exhibiting substantial exogenous variation in expected market size is examined. Two different measures of pharmaceutical innovation are analysed: the number of distinct chemotherapy regimens for treating a cancer site and the number of articles published in scientific journals pertaining to drug therapy for that cancer site. Both analyses indicate that the amount of pharmaceutical innovation increases with disease incidence. The elasticity of the number of chemotherapy regimens with respect to the number of cases is 0.53. The elasticity of MEDLINE drug cites with respect to cancer incidence throughout the world is 0.60. In the long run, a 10% decline in drug prices would therefore be likely to cause at least a 5–6% decline in pharmaceutical innovation. Evidence suggests that pharmaceutical industry employment would also decline (by at least 3.5–4%) in response to an exogenous 10% decline in drug prices. 相似文献
146.
147.
Frank Barry 《Development Southern Africa》2000,17(3):289-305
Ireland has been the economic success story of the 1990s. Growth in GNP and in employment has far exceeded those seen elsewhere. We ask first whether this is simply a delayed catching-up process. Even if this turns out to be so, the question remains as to what the key differences in policy were between the unsuccessful phase, from 1950 to 1988, and the phenomenally successful phase since then. We present a brief overview of the key differences in terms familiar from conventional growth theory, and go on to look more carefully at the constellation of factors explaining the precise timing of the turnaround in economic fortunes. 相似文献
148.
Frank Shostak 《Quarterly Journal of Austrian Economics》2000,3(4):69-76
Conclusion As we have shown, the validity of various definitions of money cannot be ascertained by means of a statistical correlation
with national income. A valid definition can be established by following the essentialist approach—that is, by focusing on
the distinguishing characteristics of an entity. Contrary to mainstream thinking, we have shown that the money supply definition
remains intact, notwithstanding the deregulation of financial markets and the introduction of electronic means of payments. 相似文献
149.
Frank Mueller‐Langer 《Review of International Economics》2012,20(1):177-185
The regulation of parallel trade is a fiercely debated issue in the global trading system. This paper investigates the welfare effects of parallel trade freedom for different levels of trade costs and market size. It is found that parallel trade freedom has a positive effect on global welfare if countries are sufficiently heterogeneous in terms of market size and trade costs are sufficiently low. Contrary to intuition, this result even holds in a situation where parallel trade freedom implies the closure of the smaller market. If, however, countries are virtually homogenous in terms of market size, parallel trade freedom may be detrimental to global welfare for specific levels of trade costs. 相似文献
150.
An assessment of market-based approaches to providing ecosystem services on agricultural lands 总被引:5,自引:0,他引:5
Market-based approaches are increasingly being advocated as tools for achieving the conservation of ecosystem services. We examine the reasons why markets so far appear to have failed to provide an efficient allocation of many ecosystem services, and identify the conditions under which markets deliver efficient resource allocation. We discuss different forms of market-based approaches to ecosystem services and identify the characteristics of services that make them better suited to one or another of these approaches. We find that lack of low-cost measurability and valuation currently precludes efficient allocation of many ecosystem services through market-based approaches. Still, some forms of market-based approaches hold promise for cost-effectively managing some ecosystem services provided by and to agricultural lands. In many cases some form of well-designed government involvement will be required to seek outcomes that protect the public interest. 相似文献