全文获取类型
收费全文 | 23538篇 |
免费 | 130篇 |
国内免费 | 2篇 |
专业分类
财政金融 | 3596篇 |
工业经济 | 1149篇 |
计划管理 | 3897篇 |
经济学 | 5178篇 |
综合类 | 1120篇 |
运输经济 | 56篇 |
旅游经济 | 74篇 |
贸易经济 | 5111篇 |
农业经济 | 421篇 |
经济概况 | 2429篇 |
信息产业经济 | 44篇 |
邮电经济 | 595篇 |
出版年
2024年 | 8篇 |
2023年 | 53篇 |
2022年 | 88篇 |
2021年 | 154篇 |
2020年 | 200篇 |
2019年 | 139篇 |
2018年 | 2377篇 |
2017年 | 2230篇 |
2016年 | 1317篇 |
2015年 | 236篇 |
2014年 | 303篇 |
2013年 | 513篇 |
2012年 | 891篇 |
2011年 | 2664篇 |
2010年 | 2430篇 |
2009年 | 2020篇 |
2008年 | 2114篇 |
2007年 | 2309篇 |
2006年 | 551篇 |
2005年 | 826篇 |
2004年 | 640篇 |
2003年 | 681篇 |
2002年 | 396篇 |
2001年 | 179篇 |
2000年 | 122篇 |
1999年 | 58篇 |
1998年 | 48篇 |
1997年 | 14篇 |
1996年 | 34篇 |
1995年 | 3篇 |
1994年 | 3篇 |
1993年 | 11篇 |
1992年 | 8篇 |
1991年 | 6篇 |
1990年 | 6篇 |
1989年 | 5篇 |
1988年 | 3篇 |
1987年 | 1篇 |
1986年 | 15篇 |
1985年 | 3篇 |
1984年 | 6篇 |
1983年 | 3篇 |
1982年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
21.
黄晓莉 《辽宁税务高等专科学校学报》2008,20(2):25-26
知识服务作为新世纪图书馆的一种全新的服务模式,必须有一支高素质的专科馆员队伍,不仅有扎实的图书馆学、情报学、计算机等方面的基础知识和技能,还要具备能独立获取知识信息的能力,知识信息处理和语言文字表达能力,捕捉信息能力,合成信息能力及良好的职业道德和敬业精神.在提升的过程中不断地自我完善。拓宽专科馆员的思维模式,醒悟领会到学习连续性,重要性和前瞻性,提高自身修养。 相似文献
22.
23.
24.
25.
Richard P. O’Neill Emily Bartholomew Fisher Benjamin F. Hobbs Ross Baldick 《Journal of Regulatory Economics》2008,34(3):220-250
The general design for the real-time electricity market presented in this paper optimizes and prices both real and reactive
power simultaneously in an AC setting, where all assets—generation, load and transmission—are allowed to bid and are financially
settled at the locational price times energy consumed or produced. The result is that transmission lines are compensated for
both capacity and admittance, providing incentives for efficient operation of transmission-related assets such as FACTS devices,
if price-taking behavior is assumed. Losses are incorporated into the design and become an operating cost for transmission.
The market design is shown to be revenue neutral and, under some assumptions, nonconfiscatory.
相似文献
26.
Hofstede's [Hofstede, Geert H. 1980. Culture's consequences: international differences in work-related values. Thousand Oaks, CA: Sage.] cross-country psychological survey of IBM employees finds that some countries (societies) are systematically less tolerant of uncertainty, while uncertainty-tolerance is shown by some theoretic models to be essential to the growth of emerging sectors about which less is known. This paper first uses Durnev, Morck, and Yeung's [Durnev, Art, Morck, Randall, and Yeung, Bernard. 2004. Value-enhancing capital budgeting and firm-specific stock return variation. The Journal of Finance. 59(1): 65–105.] methodology to identify these informationally opaque industries. The hypothesis is then made that countries characterized by high uncertainty aversion (measured by Hofstede's indicator, and two other alternative indicators) will grow disproportionately slower in industrial sectors where information is less available. Using the Rajan and Zingales [Rajan, Raghuram G. and Zingales, Luigi. 1998. Financial Dependence and Growth. American Economic Review. Vol. 88(3): 559–586.] “difference-in-differences” methodology, which is relatively free from the endogeneity problem, the study provides robust evidence of such an industrial growth pattern in 34 countries and 36 manufacturing industries. It also shows that national uncertainty aversion is not driven by underdevelopment of financial sector, inadaptability of civil law systems, lower level of economic or human capital development, labor market inflexibility, or any of many other institutional factors. The results remain robust when religious (Catholic vs. Protestant) composition is used as an instrumental variable for national uncertainty aversion. The international evidence presented helps explain why some countries are slower in embracing “new” (vs. traditional) industries. 相似文献
27.
Chi-Yo Huang Author Vitae Author Vitae 《Technological Forecasting and Social Change》2008,75(1):12-31
Product life cycle (PLC) prediction plays a crucial role in strategic planning and policy definition for high-technology products. Forecast methodologies which can predict PLCs accurately can help to achieve successful strategic decision-making, forecasting, and foresight activities in high-technology firms, research institutes, governments, and universities. Over the past few decades, even though analytic framework strategies have been proposed for production, marketing, R&D (research and development), and finance, aiming at each stage of PLCs, forecast methodologies with which to predict PLCs are few. The purpose of this research is to develop a novel forecast methodology to allow for predictions of product life time (PLT) and the annual shipment of products during the entire PLC of multiple generation products. A novel two-stage fuzzy piecewise regression analysis method is proposed in this paper. In the first stage, the product life-time of the specific generation to be analyzed will be predicted by the fuzzy piecewise regression line that is derived based upon the product life-time of earlier generations. In the second stage of the forecast methodology, the annual shipment of products of the specified generation will be predicted by deriving annual fuzzy regression lines for each generation, based upon the historical data on the earlier generations' products. An empirical study predicting the life-time and the annual shipment of the 16 Mb (Mega bit) DRAM (Dynamic Random Access Memory) PLC is illustrated to validate the analytical process. The results demonstrate that two-stage fuzzy piecewise regression analysis can predict multiple generation PLT and PLC precisely, thereby serving as a foundation for future strategic planning, policy definitions and foresights. 相似文献
28.
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
29.
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
30.