全文获取类型
收费全文 | 889篇 |
免费 | 14篇 |
专业分类
财政金融 | 139篇 |
工业经济 | 29篇 |
计划管理 | 102篇 |
经济学 | 228篇 |
运输经济 | 6篇 |
旅游经济 | 11篇 |
贸易经济 | 311篇 |
农业经济 | 39篇 |
经济概况 | 36篇 |
邮电经济 | 2篇 |
出版年
2020年 | 6篇 |
2019年 | 17篇 |
2018年 | 13篇 |
2017年 | 15篇 |
2016年 | 21篇 |
2015年 | 9篇 |
2014年 | 12篇 |
2013年 | 75篇 |
2012年 | 19篇 |
2011年 | 32篇 |
2010年 | 21篇 |
2009年 | 18篇 |
2008年 | 17篇 |
2007年 | 18篇 |
2006年 | 17篇 |
2005年 | 17篇 |
2004年 | 18篇 |
2003年 | 19篇 |
2002年 | 14篇 |
2001年 | 9篇 |
2000年 | 7篇 |
1999年 | 13篇 |
1998年 | 8篇 |
1997年 | 18篇 |
1996年 | 15篇 |
1994年 | 6篇 |
1993年 | 37篇 |
1992年 | 35篇 |
1991年 | 38篇 |
1990年 | 32篇 |
1989年 | 37篇 |
1988年 | 32篇 |
1987年 | 27篇 |
1986年 | 8篇 |
1985年 | 14篇 |
1984年 | 14篇 |
1983年 | 14篇 |
1982年 | 13篇 |
1981年 | 11篇 |
1980年 | 13篇 |
1979年 | 10篇 |
1978年 | 9篇 |
1977年 | 12篇 |
1975年 | 5篇 |
1973年 | 5篇 |
1972年 | 7篇 |
1971年 | 6篇 |
1970年 | 5篇 |
1936年 | 5篇 |
1934年 | 4篇 |
排序方式: 共有903条查询结果,搜索用时 625 毫秒
51.
The increase in professional trips to conferences and seminars made by employees in the 'knowledge industries' presents an environmentally worrying trend in mobility in contemporary post-industrial society. A number of factors are involved. Globalisation and regional competition encourage host cities and institutions to put themselves on the conference map. For the individual traveller, conferences and seminars offer escape from daily routines and the chance to experience new, perhaps exotic, places. But trips to distant conferences can have serious environmental impacts, especially if made by airplane. Because of the aggressive impact of greenhouse gas emissions in the upper atmosphere, their threat to the global climate is more serious than similar trips made at surface level. In addition, the time spent on such trips competes with other tasks: conference participation takes scarce time resources available to university academics for research. In the age of electronic communication, it is questionable whether conferences are effective arenas for communicating and gathering knowledge. 相似文献
52.
Using panel data from Illinois grain farmers, a direct test of the relationship between income risk and farm consumption behavior is conducted. The estimation results indicate that income risk significantly affects farm consumption and the results are robust using alternative risk measures. This finding casts doubt on the relevance of the conventional life-cycle permanent income hypothesis, which implies that risk has no effect on consumption. 相似文献
53.
Das Unsicherheitsmoment in der Wertlehre 总被引:1,自引:0,他引:1
Karl Menger 《Journal of Economics》1934,5(4):459-485
Ohne ZusammenfassungIm wesentlichen wurde diese Arbeit 1923 fertiggestellt und 1927 in der Wiener ökonomischen Gesellschaft vorgetragen. Vgl. auch Ergebnisse eines mathem. Kolloquiums, Heft 6 (78. Kolloquium), bei Teubner, Leipzig. 相似文献
54.
55.
本文总结了几年来我们制作的微电路发生失效的情况,对失效的机理进行了分析并研究相应的可靠性保障技术,逐步形成二次集成微电路小批量投产的质量控制体系,从而使产品的成品率与可靠性有了明显的长足进步.提供的产品满足了整机的技术要求促进整机在小型化和高可靠性方面上一级新台阶. 相似文献
56.
<正> (一)为什么在国际营销中,在渠道策略上,正确对待国外中间商具有关键意义?在这方面需要注意哪些问题? 在从事国际营销的全过程中,在发展了适销产品并订定了有竞争性的价格之后,企业选择推行的渠道策略对于能否成功地进入目标市场拓开销售具有关键的意义。而在渠道策略上如何正确选择运用中间商可说是首要问题。这是因为:第一,就世界范围来看,由出口厂商控制、左右市 相似文献
57.
58.
Wolfgang Karl Härdle Nikolaus Hautsch Andrija Mihoci 《Journal of Empirical Finance》2012,19(4):610-625
We model the dynamics of ask and bid curves in a limit order book market using a dynamic semiparametric factor model. The shape of the curves is captured by a factor structure which is estimated nonparametrically. Corresponding factor loadings are modelled jointly with best bid and best ask quotes using a vector error correction specification. Applying the framework to four stocks traded at the Australian Stock Exchange (ASX) in 2002, we show that the suggested model captures the spatial and temporal dependencies of the limit order book. We find spill-over effects between both sides of the market and provide evidence for short-term quote predictability. Relating the shape of the curves to variables reflecting the current state of the market, we show that the recent liquidity demand has the strongest impact. In an extensive forecasting analysis we show that the model is successful in forecasting the liquidity supply over various time horizons during a trading day. Moreover, it is shown that the model's forecasting power can be used to improve optimal order execution strategies. 相似文献
59.
With the implementation of the North American Free Trade Agreement (NAFTA) nearly complete, there are concerns that the easy gains in efficiency have been achieved and that additional steps towards the economic integration of the member countries are required. This poses a distinct challenge to the NAFTA governments, since the agreement did not create trinational institutions with the supranational authority to facilitate the deepening of the new trading environment. In any initiative to further the economic integration of the NAFTA countries, agriculture will be a difficult sector in which to make progress. However, at an aggregate level, the support provided directly to agricultural producers by the NAFTA governments is similar, as are tariffs at an aggregate level. All three countries have devised income support programmes that contain a countercyclical element. In each of these areas, as well as in the operation of ‘green box’ programmes that are consistent with the member countries’ obligations to the World Trade Organization, cooperation and consultation among the NAFTA members would seem crucial if they are to achieve greater integration in the agrifood sector. This article examines the opportunities and challenges facing the NAFTA members as they seek further integration in the agrifood sector. 相似文献
60.
本文主要阐述了电子技术在汽车中的应用,接着论述了国外汽车电子技术发展的三个阶段以及我国汽车电子技术的发展现状,然后指出开发汽车电子产品的关键技术。最后提出了作者的一点建议。 相似文献