全文获取类型
收费全文 | 6698篇 |
免费 | 127篇 |
国内免费 | 98篇 |
专业分类
财政金融 | 662篇 |
工业经济 | 289篇 |
计划管理 | 1411篇 |
经济学 | 1450篇 |
综合类 | 734篇 |
运输经济 | 76篇 |
旅游经济 | 61篇 |
贸易经济 | 1329篇 |
农业经济 | 326篇 |
经济概况 | 532篇 |
信息产业经济 | 4篇 |
邮电经济 | 49篇 |
出版年
2024年 | 9篇 |
2023年 | 14篇 |
2022年 | 79篇 |
2021年 | 275篇 |
2020年 | 61篇 |
2019年 | 25篇 |
2018年 | 194篇 |
2017年 | 215篇 |
2016年 | 204篇 |
2015年 | 180篇 |
2014年 | 245篇 |
2013年 | 276篇 |
2012年 | 605篇 |
2011年 | 533篇 |
2010年 | 340篇 |
2009年 | 344篇 |
2008年 | 421篇 |
2007年 | 382篇 |
2006年 | 387篇 |
2005年 | 1151篇 |
2004年 | 553篇 |
2003年 | 223篇 |
2002年 | 70篇 |
2001年 | 51篇 |
2000年 | 51篇 |
1999年 | 10篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1991年 | 3篇 |
1990年 | 1篇 |
1981年 | 1篇 |
1977年 | 1篇 |
1970年 | 1篇 |
1969年 | 1篇 |
1968年 | 1篇 |
1965年 | 2篇 |
1963年 | 3篇 |
1962年 | 2篇 |
1961年 | 2篇 |
排序方式: 共有6923条查询结果,搜索用时 15 毫秒
61.
62.
为科学优选自然保护地社区居民点发展模式,构建客观评价模型对社区居民点发展模式进行定量评价显得尤为重要。基于“中国丹霞”福建泰宁世界自然遗产地9个社区居民点的调研数据,采用序关系分析法,以居民点人口结构、居民点景观风貌与传统文化、居民点产业发展模式,以及居民点位于遗产地的位置4个一级指标和相应二级指标为评价准则,构建该遗产地社区居民点发展模式优劣评价模型。研究表明,该遗产地9个社区居民点发展模式中,4个为疏解型,3个为搬迁型,2个为控制型,没有发展型。研究结果可为该遗产地社区居民点科学遴选发展模式提供定量评价依据,也可为生态价值高的自然保护地社区居民点发展模式的遴选提供参考。 相似文献
63.
Ahmet?Kuba?Email author Fatih?Yilmaz Ya?ar?Akta? Nurcan?Met?N 《Quality and Quantity》2005,39(5):615-623
Multinomial Logit Model has analyzed the relationship between the frequency of visits to recreation areas and the motivational factors affecting the visits. Kastro Environment Preserving Site that is located in the Black Sea coast of Marmara region in Turkey, has been chosen as the site for this study. Kastro bay is a natural park that is visited only for recreational visits. The study has been conducted on a photogenic study group due to the proximity factor of Kastro bay close to Istanbul. Kastro bay is a popular recreational park due to its characteristic advantages such as a 200 m wide and approximately 2.5 km long beach and with its high quality vegetation. The vegetation type includes ash tree, oak tree, black pine, sand lily etc. Kastro bay is also the site for the Mediterranean seals (Monachus-monachus) which are at the level of extinction. Approximately 50,000 visitors visit the region during the months of July and August. It has been concluded that there is high direct correlation between the frequency of visits and the motivational factors. It has been determined that the visits are mostly based on the sea and the ecological tourism.Jel: O13, Q20, Q26, Q51, Q56, Q57 相似文献
64.
面向电子商务的现代物流管理信息系统的开发 总被引:2,自引:0,他引:2
结合现代物流技术发展趋势,分析探讨了面向电子商务的现代物流管理信息系统的开发技术路线,关键技术内容,功能体系结构设计及分层逻辑模型设计。 相似文献
65.
One particularly vexing puzzle for economists and policymakers over the past several decades concerns the empirical significance of the theoretically predicted pollution haven hypothesis. While neoclassical theory and conventional wisdom both surmise that local economies will suffer deleterious effects from stricter environmental regulations, empirical studies have largely failed to validate such claims. This study utilizes the method of matching to show that the impact of stricter regulation is heterogeneous spatially, varying systematically based on location-specific attributes. Previous studies that assume a homogenous response may therefore inadvertently mask the overall impact of more stringent regulations by pooling unaffected and affected regions.JEL Classification: Q25, Q28, H00, L51, R1The authors wish to thank to Michael Crew, Anthony Heyes, an anonymous referee, Werner Antweiler, Randy Becker, Wayne Gray, Shelby Gerking, Michael Greenstone, Vern Henderson, and Arik Levinson. Participants at various university seminars and conferences also lent useful insights to this line of research. 相似文献
66.
产业融合理论及其经济效果 总被引:2,自引:0,他引:2
产业融合是信息化进程中呈现的一种产业新范式,是21世纪产业发展的新趋势.国内外许多学者从各个角度对这一经济现象进行了论述.本文主要阐述了产业融合内涵,介绍了产业融合过程中出现的主要产业融合类型,并分析了产业融合对社会经济发展的影响. 相似文献
67.
Synopsis This paper is the product of a collaboration between a biologist (Ghiselin 1997) who works on the philosophy of classification
and an economist (Landa 1981, 1994) who works on the ‘Economics of Identity’: how and why people classify people based on
identity in the context of a theory of ethnic trading networks. In developing the ‘bioeconomics’ (the synthesis of economics
with biology) of classification, we crossed a number of disciplinary boundaries—anthropology, economics, sociology, biology,
and cognitive psychology including evolutionary psychology’s ‘fast and frugal’ heuristics. Using a bioeconomics approach,
we argue that folk classifications—the classifications used by ordinary persons—have much in common with scientific classifications:
underlying both is the need for economy of information processing in the brain, for the efficient organization of knowledge,
and for efficiency of information acquisition and transmission of information to others. Both evolve as a result of trial
and error, but in science there is relatively more foresight, understanding, and planning. 相似文献
68.
罗佳 《北京市经济管理干部学院学报》2007,22(3):54-57
本文简要回顾了小额信贷在中国的发展历程,指出小额信贷在我国发展缓慢的现实,分析了阻碍小额信贷发展的问题,并提出了相应的对策建议。 相似文献
69.
H.?Kent?BakerEmail author Gary?E.?Powell E.?Theodore?Veit 《Journal of Economics and Finance》2002,26(3):267-283
We survey managers of Nasdaq firms that consistently pay cash dividends to determine their views about dividend policy, the
relationship between dividend policy and value, and four common explanations for paying dividends. The evidence shows that
managers stress the importance of maintaining dividend continuity and widely agree that changes in dividends affect firm value.
Managers give the strongest support to a signaling explanation for paying dividends, weak to little support for the tax-preference
and agency cost explanations, and no support to the bird-in-the-hand explanation. The study provides new evidence about how
managers view dividend life cycles and residual dividend policy.
The authors would like to thank two anonymous referees for helpful comments and suggestions, and Maheshan Fernando and Sumeet
Chawla for providing research assistance. 相似文献
70.
Let X (r, n, m, k), 1 r n, denote generalized order statistics based on an absolutely continuous distribution function F. We characterize all distribution functions F for which the following linearity of regression holds
E(X(r+l,n,m,k) | X(r,n,m,k))=aX(r,n,m,k)+b.We show that only exponential, Pareto and power distributions satisfy this equation. Using this result one can obtain characterizations of exponential, Pareto and power distributions in terms of sequential order statistics, Pfeifers records and progressive type II censored order statistics.
Received July 2001/Revised August 2002 相似文献