全文获取类型
收费全文 | 14936篇 |
免费 | 375篇 |
专业分类
财政金融 | 3128篇 |
工业经济 | 1122篇 |
计划管理 | 2399篇 |
经济学 | 3196篇 |
综合类 | 161篇 |
运输经济 | 108篇 |
旅游经济 | 233篇 |
贸易经济 | 2444篇 |
农业经济 | 676篇 |
经济概况 | 1830篇 |
信息产业经济 | 2篇 |
邮电经济 | 12篇 |
出版年
2023年 | 78篇 |
2021年 | 97篇 |
2020年 | 202篇 |
2019年 | 290篇 |
2018年 | 357篇 |
2017年 | 369篇 |
2016年 | 334篇 |
2015年 | 230篇 |
2014年 | 357篇 |
2013年 | 1690篇 |
2012年 | 419篇 |
2011年 | 500篇 |
2010年 | 465篇 |
2009年 | 458篇 |
2008年 | 437篇 |
2007年 | 381篇 |
2006年 | 353篇 |
2005年 | 286篇 |
2004年 | 287篇 |
2003年 | 294篇 |
2002年 | 291篇 |
2001年 | 303篇 |
2000年 | 312篇 |
1999年 | 311篇 |
1998年 | 310篇 |
1997年 | 271篇 |
1996年 | 235篇 |
1995年 | 228篇 |
1994年 | 246篇 |
1993年 | 248篇 |
1992年 | 273篇 |
1991年 | 258篇 |
1990年 | 205篇 |
1989年 | 185篇 |
1988年 | 171篇 |
1987年 | 166篇 |
1986年 | 172篇 |
1985年 | 246篇 |
1984年 | 258篇 |
1983年 | 251篇 |
1982年 | 217篇 |
1981年 | 200篇 |
1980年 | 175篇 |
1979年 | 175篇 |
1978年 | 160篇 |
1977年 | 138篇 |
1976年 | 126篇 |
1975年 | 142篇 |
1974年 | 102篇 |
1973年 | 103篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
The decline in per-capita agricultural production has been reversed somewhat in tropical Africa by the structural adjustment programs which have increased producer prices, liberalized marketing and devalued currencies. But the 30% of smallholder farm households which are female-headed will not be assited much due to their special constraints of shortages of labor and credit, lack of extension visits and appropriate labor-saving technologies. For these households, the authors argue, improved extension services, credit for agricultural inputs, small ruminant animals and poultry, labor-saving devices and craft inputs will be necessary to increase their incomes and levels of living. 相似文献
102.
This article examines whether ties to portfolio firms’ management via pension business relationships provide mutual funds with an informational advantage. Funds become related to portfolio companies when fund families serve as trustees for firms’ employee pension plans. Selling by related funds is more likely to be motivated by an information advantage than their buying, because the latter is heavily influenced by the desire to secure pension inflows. We find that stocks with larger net sales by related funds experience lower future returns. Information appears related to firm fundamentals, as the return predictability of related funds’ selling concentrates in stocks with negative future earnings surprises. Consistent with an information‐based explanation, the predictive power of related funds’ selling for future returns is more pronounced when information uncertainty about the stock is higher. Our results contribute to a growing literature that shows the sources of informed trading by institutions. 相似文献
103.
Vicar S. Valencia 《Atlantic Economic Journal》2018,46(1):43-58
A fundamental concern emerging from the corporate literature is the agency problem of innovation. While innovation is considered as a major driver of corporate growth and profitability, the Chief Executive Officer (CEO) has an intrinsic reluctance to pursue innovation projects. The thrust of this paper is to identify the mechanisms of corporate governance which help attenuate this problem, thereby encouraging the CEO to have the propensity to innovate. The empirical results suggest that firms with a widespread dispersion of shares among shareholders are less likely to encourage the CEO to innovate. The likelihood of innovation appears to increase, however, in the presence of a large shareholder. Contrary to prevailing beliefs, there appears to be no association between innovation and board independence. The same result holds for board size. Also, a diverse board appears to negate CEO predisposition to innovate. On the other hand, innovation increases when the CEO is not the Board Chair but has equity ownership, although the incentive effect is economically small. The paper uses a sample of domestically-owned, publicly-listed Australian firms over the period 1994–2003. 相似文献
104.
Eric S. Rosengren 《Atlantic Economic Journal》2018,46(2):139-150
The current monetary policy debate has focused on current estimates and the future path of the natural rate of unemployment and the equilibrium interest rate. Estimates of the natural rate of unemployment should vary over time with changes in demographics and improvements in human capital. However, these changes should be gradual. This paper shows that the estimates of the natural rate of unemployment by Federal Reserve officials and private-sector economists seem to move pro-cyclically, potentially showing too much weight given to short-term fluctuations in economic variables. As with the natural rate, there are good reasons to expect the equilibrium interest rate to change over time. In fact, the level may actually be more responsive to current economic data, reflecting changes in aggregate savings and investment. Yet, we see that equilibrium interest rate estimates by both Federal Reserve officials and private-sector economists have declined quite dramatically over the past five years. A potential concern raised in this paper is that estimates of these critical economic variables for policy determination appear to be overly sensitive to high frequency economic data. 相似文献
105.
I. E. Ilina E. N. Zharova S. P. Burlankov 《Studies on Russian Economic Development》2018,29(2):207-213
This paper presents an approach to assessing the efficacy of public spending on research and development in state programs. At present, there is a need to develop a unified approach to the analysis and evaluation of the efficacy of such spending from the perspective of participants in state programs (federal executive bodies). The proposed approach does not allow evaluating the efficacy of public spending on the development of research areas assigned to the authors. 相似文献
106.
P. V. Druzhinin A. P. Shcherbak S. V. Tishkov 《Studies on Russian Economic Development》2018,29(3):280-287
The paper has studied the change in the electric intensity of the Russian economy over the past 25 years. Equations have been constructed that correlate the electricity consumption with GDP (GVA for key economic sectors) and investment volume. The influence of structural changes and power consumption in particular sectors, as well as the modernization of the key economic sectors on the dynamics of the Russian economy electric intensity, has been identified. 相似文献
107.
108.
C S van der Waal 《Development Southern Africa》1994,11(3):429-436
In One destiny: Our common future in Africa the author relates, in popular fashion, a series of incidents which convinced him that the basic difference between black and white in South Africa is cultural deep‐seated and the cause of underdevelopment and conflict He develops a circular argument in which world‐view is taken as the root of perceptions, values and activities. The effects of experience and economic and political factors are given secondary importance. This argument cannot accommodate social change and differentiation, and the author tends to concentrate on perceptions and events which he finds morally unacceptable. He gives an unbalanced assessment and an ethnocentric interpretation of African life. Possible reasons for this type of argument are explored and an alternative which takes its departure from the interaction between experience and perception is offered 相似文献
109.
110.
Neil Buckley Kenneth S. Chan James Chowhan Stuart Mestelman Mohamed Shehata 《Experimental Economics》2001,4(2):183-195
Identifying the value orientations of subjects participating in market or non-market decisions by having them participate in a ring game may be helpful in understanding the behaviour of these subjects. This experiment presents the results of changes in the centre and the radius of a value orientations ring in an attempt to discover if the measured value orientations exhibit income or displacement effects. Neither significant income effects nor displacement effects are identified. An external validity check with a voluntary contribution game provides evidence that value orientations from rings centred around the origin of the decision-space explain significant portions of voluntary contributions while value orientations from displaced rings do not. 相似文献