全文获取类型
收费全文 | 2945篇 |
免费 | 135篇 |
专业分类
财政金融 | 523篇 |
工业经济 | 214篇 |
计划管理 | 525篇 |
经济学 | 724篇 |
综合类 | 30篇 |
运输经济 | 40篇 |
旅游经济 | 83篇 |
贸易经济 | 535篇 |
农业经济 | 173篇 |
经济概况 | 215篇 |
信息产业经济 | 1篇 |
邮电经济 | 17篇 |
出版年
2023年 | 22篇 |
2022年 | 20篇 |
2021年 | 37篇 |
2020年 | 62篇 |
2019年 | 97篇 |
2018年 | 119篇 |
2017年 | 148篇 |
2016年 | 115篇 |
2015年 | 75篇 |
2014年 | 144篇 |
2013年 | 340篇 |
2012年 | 132篇 |
2011年 | 155篇 |
2010年 | 125篇 |
2009年 | 153篇 |
2008年 | 125篇 |
2007年 | 107篇 |
2006年 | 90篇 |
2005年 | 82篇 |
2004年 | 62篇 |
2003年 | 75篇 |
2002年 | 75篇 |
2001年 | 52篇 |
2000年 | 37篇 |
1999年 | 32篇 |
1998年 | 48篇 |
1997年 | 50篇 |
1996年 | 43篇 |
1995年 | 27篇 |
1994年 | 34篇 |
1993年 | 38篇 |
1992年 | 31篇 |
1991年 | 17篇 |
1990年 | 21篇 |
1989年 | 18篇 |
1988年 | 16篇 |
1987年 | 10篇 |
1986年 | 11篇 |
1985年 | 27篇 |
1984年 | 21篇 |
1983年 | 19篇 |
1982年 | 13篇 |
1981年 | 20篇 |
1980年 | 16篇 |
1979年 | 20篇 |
1978年 | 12篇 |
1977年 | 19篇 |
1976年 | 13篇 |
1975年 | 11篇 |
1971年 | 6篇 |
排序方式: 共有3080条查询结果,搜索用时 15 毫秒
1.
Daniel Sgroi 《Experimental Economics》2003,6(2):159-180
Herding describes the phenomenon in decision-making where an economic agent disregards his own private information to follow the actions of his predecessors as in Banerjee (1992). With later decision-makers simply copying earlier decisions their private information cannot be inferred by other decision-makers and will be forever lost. There is some experimental evidence on simple sequential herding of this type in the literature, notably Anderson and Holt (1997). This paper differs by allowing subjects to delay their decision-making in order to benefit from observing others' actions as in more recent herding models such as Chamley and Gale (1994). The results in this paper suggest that subjects will indeed delay when their private information is not sufficiently strong. Despite this ability to wait, as predicted in the theoretical literature, cascades remained ubiquitous and more worrying still, reverse-cascades occurred in which incorrect decisions made by early decision-makers produced informational cascades on the wrong action. In an alternative design, informing subjects that they had made incorrect choices only made matters worse as subjects moved further away from rational behavior. 相似文献
2.
Extensification of agriculture is one of the major factors contributing to the destruction of forests in Africa. In Sudan, such horizontal expansion comes at the expense of land devoted to trees and other vegetation, thereby inducing conditions that are inimical to sustainable agricultural production. Different factors have contributed to extensification. Although high economic returns from crop (mainly sorghum) production was an important factor encouraging extensification of rainfed mechanized farming, other factors outside agriculture have also contributed to that expansion. This paper uses data from eastern Sudan and an acreage response model, to identify the most important factors influencing acreage expansion. Different measures and forms of risk were used in the acreage response model. The paper shows how policies in the energy sector can indirectly influence acreage expansion in the agricultural sector. 相似文献
3.
4.
Daniel G. Hallstrom 《Review of International Economics》2004,12(3):441-455
Agriculture remains sensitive to variation in rainfall and temperature. Fortunately, our ability to predict the lower frequency variation in the earth's atmosphere is increasing rapidly. While information cannot affect the underlying source of variability, it allows unexpected shocks to be anticipated and acted upon. This paper develops and analyzes an intertemporal Ricardian trade model with Bayesian beliefs. Results in this paper show that improved climate prediction reduces expected prices, but increases price variability. In addition, trade is crucial to realizing the potential benefits of climate prediction. The value of climate prediction is highest with both storage and trade, and falls by over 300% when a country is in autarky. 相似文献
5.
6.
7.
8.
Does hedging add value to the firm, and if so, is the source of the added value consistent with hedging theory? We investigate jet fuel hedging behavior of firms in the US airline industry during 1992–2003 to examine whether such hedging is a source of value for these companies. We illustrate that the investment and financing climate in the airline industry conforms well to the theoretical framework of Froot, Scharfstein, and Stein (1993). In general, airline industry investment opportunities correlate positively with jet fuel costs, while higher fuel costs are consistent with lower cash flow. Given that jet fuel costs are hedgeable, airlines with a desire for expansion may find value in hedging future purchases of jet fuel. Our results show that jet fuel hedging is positively related to airline firm value. The coefficients on the hedging variables in our regression analysis suggest that the “hedging premium” is greater than the 5% documented in Allayannis and Weston (2001), and might be as large as 10%. We find that the positive relation between hedging and value increases in capital investment, and that most of the hedging premium is attributable to the interaction of hedging with investment. This result is consistent with the assertion that the principal benefit of jet fuel hedging by airlines comes from reduction of underinvestment costs. 相似文献
9.
Regional integration: an empirical assessment of Russia 总被引:1,自引:0,他引:1
Using a statistical model of commodity trade, we quantify the evolution of regional economic integration within Russia during 1995–1999, and explore potential determinants of this evolution. Our integration measure exhibits rich regional variation that, when aggregated to the national level, fluctuates substantially over time. In accounting for this behavior, we draw in part on theoretical models that emphasize the potential role of openness to international trade and regional disparities in income in threatening economic integration. Controlling for a host of additional regional- and national-level variables, we find a strong negative correspondence between openness to international trade and internal economic integration. 相似文献
10.
This paper discusses the statistical issues that arise in conducting an economic damages analysis in the context of a litigation matter involving copyrights. Calculating damages in copyright cases turns out to be a natural application for econometric modelling methods. Surprisingly, elementary statistical issues can be a source of significant debate between the experts in such matters. In this paper, we present a case study and illustrate how issues such as interpretation of p -values and what "rejection of the null hypothesis" really "means" in such matters. 相似文献