全文获取类型
收费全文 | 6518篇 |
免费 | 212篇 |
国内免费 | 98篇 |
专业分类
财政金融 | 368篇 |
工业经济 | 323篇 |
计划管理 | 1512篇 |
经济学 | 874篇 |
综合类 | 835篇 |
运输经济 | 107篇 |
旅游经济 | 96篇 |
贸易经济 | 638篇 |
农业经济 | 1439篇 |
经济概况 | 636篇 |
出版年
2024年 | 18篇 |
2023年 | 62篇 |
2022年 | 94篇 |
2021年 | 139篇 |
2020年 | 348篇 |
2019年 | 89篇 |
2018年 | 84篇 |
2017年 | 220篇 |
2016年 | 189篇 |
2015年 | 202篇 |
2014年 | 528篇 |
2013年 | 396篇 |
2012年 | 498篇 |
2011年 | 661篇 |
2010年 | 456篇 |
2009年 | 439篇 |
2008年 | 439篇 |
2007年 | 407篇 |
2006年 | 411篇 |
2005年 | 293篇 |
2004年 | 232篇 |
2003年 | 179篇 |
2002年 | 108篇 |
2001年 | 104篇 |
2000年 | 69篇 |
1999年 | 56篇 |
1998年 | 25篇 |
1997年 | 12篇 |
1996年 | 14篇 |
1995年 | 9篇 |
1994年 | 7篇 |
1993年 | 13篇 |
1992年 | 7篇 |
1991年 | 6篇 |
1990年 | 1篇 |
1988年 | 2篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1982年 | 3篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有6828条查询结果,搜索用时 312 毫秒
11.
Richard Nehring Charles Barnard David Banker Vince Breneman 《American journal of agricultural economics》2006,88(4):930-946
This article determines the relative technical efficiency of rural- and urban-influenced crop/livestock enterprises in the Corn Belt. Farmers in urban-influenced locations are less technically efficient than farmers in rural locations. During 1998–2000, stochastic production frontier procedures indicate that a 10% increase in urban influence leads to a close to 4% decrease in technical efficiency. The most successful urban-influenced farms have controlled costs as effectively as rural farms. They have tended to de-emphasize that nondairy livestock activities—particularly beef and hogs—do not rely extensively on off-farm income, and have relatively large, less residential/lifestyle operations compared to less successful urban-influenced farmers. However, our statistical analysis clearly bears out the refrain in popular literature that urban proximity raises the cost for, and decreases the viability of, traditional farms. 相似文献
12.
Summary. This research studies the role of multivariate distribution structures on random asset returns in determining the optimal
allocation vector for an expected utility maximizer. All our conclusions pertain for the set of risk averters. By carefully
disturbing symmetry in the distribution of the, possibly covarying, returns, we ascertain the ordinal structure of the optimized
allocation vector. Rank order of allocations is also established when a permutation symmetric random vector is mapped into
the returns vector through location and scale shifts. It is shown that increased dispersion in the vectors of location and
scale parameters benefit, ex-ante, investors as does a decrease in the rank correlation coefficient between the location and
scale parameter vectors. Revealed preference comparative static results are identified for the location and scale vectors
of asset returns. For most issues addressed, we arrive at much stronger inferences when a safe asset is available.
Received: August 8, 2000; revised version: January 8, 2001 相似文献
13.
14.
中国自改革开放至加入WTO,外贸法规、政策发生了很大变化,与过去相比,正向更加标准、更加透明方向迈进,逐渐接近国际标准.但目前中国外贸法体系及与之相关的实施细则有待于修正和完善,进一步适应WTO规范. 相似文献
15.
This study investigates how participating in strategic alliances with rivals affects the relative competitive positions of the partner firms. The paper builds on studies that show significant differences in the outcomes of scale and link alliances. The study argues that the more asymmetric outcomes of link alliances translate into greater changes in the relative market shares of the partner firms, due to unbalanced opportunities for inter‐partner learning and learning by doing. We find support for this argument by examining 135 alliances among competing firms in the global automobile industry, from 1966 to 1995. Copyright © 2004 John Wiley & Sons, Ltd. 相似文献
16.
中国和新加坡产业内贸易与规模经济存在着一种长期的均衡关系,新加坡生产企业的规模经济对产业内贸易的推动作用大于中国,中国和新加坡生产企业的规模经济与产业内贸易存在单向因果关系,即规模经济促进产业内贸易. 相似文献
17.
Christian Von Weizsäcker 《Empirica》1993,20(3):241-244
Most firms produce most of the time under conditions of substantial economies of scale. The division of labour, according to Adam Smith the mainspring of wealth, is intrinsically an economies of scale phenomenon. Market structure in most industries in characterized by a small number of suppliers and a larger number of customers. I explain this law of small numbers as the equilibrium of two forces: the deconcentration effect of imitation and the market spliting effect of further refinements in the division of labour by innovation. A deconcentrated market creates larger incentives for market splitting (product differentiation) by innovation than a concentrated market. But market splitting raises concentration in the market and it raises the number of different markets in the economy. Before the economies of scale of old products are fully exploited, new products are being offered which again are produced under conditions of economies of scale. 相似文献
18.
This study shows that firms in the pharmaceutical industry experience decreasing returns to scale in R & D as the level of R & D expenditures rises. The paper presents the results of our study of the innovative output of 16 pharmaceutical firms over a 19 year period. Given the strong correlation between R & D budgets and firm size, our study suggests the wave of mergers in the industry may yield less innovative productivity than managers expect. 相似文献
19.
中国保险市场是全球最重要的新兴保险市场之一,在经济全球化背景下,国际保险业发展的新趋势将对中国保险业的发展产生重大而深远的影响,中国保险业在经营理念、发展模式、扩张路径和运营模式等方面将发生深刻的变革。 相似文献
20.
针对目前井下作业企业在品牌建设中普遍存在的问题进行深入分析,着重剖析了制约品牌建设的各种不利因素.提出了在现有条件下井下作业企业如何实施品牌战略的设想,指出井下作业企业要实现成为世界级的公司目标,就必须走向世界,积极参与国际竞争,进一步加强品牌战略。 相似文献