全文获取类型
收费全文 | 21789篇 |
免费 | 779篇 |
国内免费 | 348篇 |
专业分类
财政金融 | 1582篇 |
工业经济 | 1249篇 |
计划管理 | 5632篇 |
经济学 | 3839篇 |
综合类 | 2158篇 |
运输经济 | 369篇 |
旅游经济 | 727篇 |
贸易经济 | 2913篇 |
农业经济 | 2019篇 |
经济概况 | 2427篇 |
信息产业经济 | 1篇 |
出版年
2024年 | 73篇 |
2023年 | 402篇 |
2022年 | 409篇 |
2021年 | 610篇 |
2020年 | 820篇 |
2019年 | 591篇 |
2018年 | 570篇 |
2017年 | 741篇 |
2016年 | 686篇 |
2015年 | 713篇 |
2014年 | 1634篇 |
2013年 | 2097篇 |
2012年 | 1752篇 |
2011年 | 2168篇 |
2010年 | 1561篇 |
2009年 | 1349篇 |
2008年 | 1425篇 |
2007年 | 1294篇 |
2006年 | 1066篇 |
2005年 | 839篇 |
2004年 | 603篇 |
2003年 | 351篇 |
2002年 | 239篇 |
2001年 | 210篇 |
2000年 | 156篇 |
1999年 | 93篇 |
1998年 | 107篇 |
1997年 | 62篇 |
1996年 | 59篇 |
1995年 | 50篇 |
1994年 | 39篇 |
1993年 | 27篇 |
1992年 | 20篇 |
1991年 | 19篇 |
1990年 | 9篇 |
1989年 | 8篇 |
1988年 | 5篇 |
1987年 | 4篇 |
1986年 | 9篇 |
1985年 | 11篇 |
1984年 | 13篇 |
1983年 | 10篇 |
1982年 | 7篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 921 毫秒
31.
The Graph Model for Conflict Resolution is a flexible methodology for systematically studying strategic conflicts in the real world, and is therefore a natural tool for negotiation support. The basic definitions underlying the graph model are reviewed, and the techniques for analysis and interpretation are discussed. The modeling and analysis of a case study, an international trade negotiation concerning the export of Canadian softwood lumber to the United States, are used to demonstrate the practical application of the Graph Model for Conflict Resolution as a negotiation support tool. The modeling and analysis is carried out using the GMCR software system. The ability of the Graph Model for Conflict Resolution to provide insights and advice to negotiators is emphasized. 相似文献
32.
Targeting Conservation Investments in Heterogeneous Landscapes: A Distance-Function Approach and Application to Watershed Management 总被引:4,自引:0,他引:4
Paul J. Ferraro 《American journal of agricultural economics》2004,86(4):905-918
To achieve an environmental objective at least cost, decision makers must integrate information about spatially variable biophysical and economic conditions. Although the biophysical attributes that contribute to an environmental outcome are often known, the way in which these attributes interact to produce the outcome is often unknown. We introduce a nonparametric conservation targeting approach that relies on distance functions to cost-efficiently allocate conservation funds. We apply the approach empirically to the case of conservation contracting for water-quality objectives. The contract portfolios derived from the application have many desirable properties, including intuitive appeal and robust performance across plausible parametric scoring measures. 相似文献
33.
Investment, uncertainty and irreversibility 总被引:1,自引:0,他引:1
This paper investigates the irreversibility of investments and the impact this has on the nature of the relationship between investment and uncertainty. The empirical analysis uses firm‐level data and is based on a survey of 210 rice‐milling firms in the Mekong River Delta in Vietnam, which was carried out during the year 2000. We show that uncertainty reduces investment of rice millers in the presence of irreversibility, as is predicted by the real options approach to investment. We do not find evidence that the negative association between uncertainty and investment is influenced by the degree of irreversibility. 相似文献
34.
该文对嘉兴市6个年级共600个小学生的人体测量数据,进行了统计分析,探讨了男女小学生体型随年龄变化的规律。 相似文献
35.
该文在界定产权概念的基础上,以教育部直属高校独立学院的产权现状为切入点,指出了现有独立学院产权构成的不规范性,分析了这一现状的危害,并提出了若干解决问题的思路. 相似文献
36.
各向异性厚板固有频率的精确解 总被引:3,自引:0,他引:3
该文抛弃薄板理论的位移和应力假设,利用矩阵分析和三维弹性动力学理论,导出四边简支各向异性厚板的固有频率方程。该方法可推广应用于各向异性层合板动力分析。 相似文献
37.
教育产权概念解析 总被引:1,自引:0,他引:1
徐文 《武汉市经济管理干部学院学报》2005,19(3):28-31
文章在分析教育产权客观存在的基础上,对教育产权的含义和内容进行了分析。文章认为,教育产权是参与教育活动的组织和个人围绕教育财产而形成的一组权利关系。从内容上看,教育产权是包括对教育财产的狭义所有权或归属权、占有权、使用权、收益权,以及处分权在内的权利集合。 相似文献
38.
K.E. Hughes II & J. Kenneth Reynolds 《Journal of Business Finance & Accounting》2001,28(9&10):1351-1386
This study examines whether the uncertainty arising from a firm's exposure to future environmental costs (environmental uncertainty) affects the market's price sensitivity to reported earnings. Specifically, when environmental uncertainty is significantly high, are investors more responsive to reported earnings released by 'high-polluting' firms than reported earnings announced by 'low-polluting' firms within the same industry? The initial impact of Title IV (the acid rain provisions) of the 1990 Clean Air Act Amendments (1990 CAAA) on the US electric utility industry provides the research setting required to isolate the effects of environmental uncertainty while addressing this question. Consistent with theoretical predictions, we find that the earnings response coefficients (ERCs) of high-polluting electric utilities are significantly greater than those of their low-polluting counterparts during a predicted period of elevated environmental uncertainty. In adjoining sample years associated with lower environmental uncertainty, we observe no statistical difference in the magnitude of the ERCs between these two groups. In addition, the study's findings suggest that the magnitude of the ERC is increasing in the firm's exposure to future environmental costs, after controlling for other factors that potentially affect ERCs. 相似文献
39.
40.
Summary Competition authorities are increasingly measuring the effects of their enforcement actions, seeking a robust justification
for the proliferation of competition policy. We highlight the importance of identifying the right counterfactual against which
to measure effects, and set out the relevant categories of costs and benefits. We then explore how a balance can be struck
between the benefits and inherent limitations of these measurement exercises. Relatively crude analyses of cartel action benefits
can be sufficient to achieve public legitimacy for competition policy. Assessing the effects of merger and conduct inquiries
is often ambiguous, but could be used to improve decision-making processes.
Director and Managing Consultant, respectively, at Oxera, Oxford and London. The valuable comments of Fod Barnes, Kerry Hughes
and an anonymous referee are gratefully acknowledged. The opinions expressed in this article are those of the authors alone. 相似文献