全文获取类型
收费全文 | 10557篇 |
免费 | 427篇 |
国内免费 | 125篇 |
专业分类
财政金融 | 290篇 |
工业经济 | 203篇 |
计划管理 | 952篇 |
经济学 | 1563篇 |
综合类 | 1050篇 |
运输经济 | 37篇 |
旅游经济 | 73篇 |
贸易经济 | 654篇 |
农业经济 | 5092篇 |
经济概况 | 1195篇 |
出版年
2024年 | 67篇 |
2023年 | 207篇 |
2022年 | 233篇 |
2021年 | 265篇 |
2020年 | 419篇 |
2019年 | 302篇 |
2018年 | 315篇 |
2017年 | 377篇 |
2016年 | 391篇 |
2015年 | 344篇 |
2014年 | 637篇 |
2013年 | 621篇 |
2012年 | 805篇 |
2011年 | 940篇 |
2010年 | 838篇 |
2009年 | 710篇 |
2008年 | 611篇 |
2007年 | 688篇 |
2006年 | 650篇 |
2005年 | 473篇 |
2004年 | 389篇 |
2003年 | 264篇 |
2002年 | 180篇 |
2001年 | 130篇 |
2000年 | 80篇 |
1999年 | 56篇 |
1998年 | 20篇 |
1997年 | 16篇 |
1996年 | 19篇 |
1995年 | 5篇 |
1994年 | 10篇 |
1993年 | 5篇 |
1992年 | 4篇 |
1991年 | 2篇 |
1990年 | 2篇 |
1988年 | 2篇 |
1985年 | 11篇 |
1984年 | 15篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 2篇 |
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
《Food Policy》2019
This paper reviews the changes in Shuanghui’s operations after the Smithfield acquisition as well as transformations in China’s pork industries. As income grows and diets change, there has been an increasing demand for high-quality pork and more processed pork products. However, China’s swine and pork industries are still at an early stage of development as evidenced by the low market concentration, intensive use of labour, a proliferation of intermediaries, and low levels of technology. Bounded by the established consumer preferences for freshness and the status quo in the midstream and upstream segments, Shuanghui is in a slow process of upgrading its domestic operations with Smithfield’s leading brands, import of chilled and frozen pork, advanced technologies, and the vertically integrated business model after this acquisition. In particular, it remains unclear whether Shuanghui can follow Smithfield’s experience to establish stable and safe hog supplies by multiplying self-owned hog farms, maintain and expand its current contracts with large-scale commercial hog farms, or rely more on global sourcing of pork primarily from the U.S. 相似文献
2.
Does placing a display of complementary condiments (e.g., ketchup, mustard, buns,etc.) next to a display of hamburgers make shoppers more likely to attend to the hamburgers? Prior work has established that in-store marketing strategies play an important role in drawing attention to products in a retail setting. Building on this research, the present study develops a framework to better understand how shoppers in a natural retail environment attend to displays of complementary products, and how this attention transfers to a focal product. The results suggest that assortment complexity of a display positively affects initial attention capture.. Further, initial attention capture leads shoppers to spend longer evaluating the complementary products in the display, which, in turn, increases evaluation and choice of the focal product. As such, our framework indicates that complementary product displays can be effective at increasing attention to and choice of an associated focal product. 相似文献
3.
We commemorate the 50th anniversary of Ball and Brown [1968] by chronicling its impact on capital market research in accounting. We trace the evolution of various research paths that post–Ball and Brown [1968] researchers took as they sought to build on the foundation laid by Ball and Brown [1968] to create a body of research on the usefulness, timeliness, and other properties of accounting numbers. We discuss how those paths often link back to the groundwork laid and questions originally posed in Ball and Brown [1968]. 相似文献
4.
5.
6.
Wenfiang Ran Junwen Feng 《美中经济评论(英文版)》2004,3(5):25-28,42
According to everyone average welfare value of land resources; this paper constitutes the base line of glebe usufruct deal value by analyzing the factors, which are affecting glebe usufruct deal value. Having adopted share's quotient of ownership and contracting power, the paper erects assigning mechanism to the income of glebe deal. Because of the share dynarnicity being adopted which shows the flexible strong points, the shares of ownership and contracting power avoid many unnecessary otiose disputes on income of glebe deal, adding the stability to the glebe usufruct deal. It is beneficial to the freedom flow and validity manufacture factor installment and also to the nonagricultural changing course. 相似文献
7.
8.
随着科学技术的不断创新和提高,专利技术的交易越来越频繁,其交易所占贸易的比重也越来越大。文章指出,在专利技术交易发生前后对被交易技术进行必要的产权研究,理顺交易双方的产权关系,明确交易双方的权利和义务,对于交易双方避免交易错位和发生法律纠纷有着重要的指导意义。 相似文献
9.
重庆市城市土地经济效益评价 总被引:5,自引:0,他引:5
从产出和投入两方面构建城市土地经济效益评价的指标体系,采用层次分析法对重庆城市土地的经济效益进行评价,可知:重庆城市土地的经济效益总体水平较低、波动较大,重庆城市近年来投入偏高影响了土地经济效益,而且重庆城市土地利用的集约化水平不高. 相似文献
10.
说明了均匀、轴对称、无源介质是一个K-辛空间上的Hamilton系统,Hamilton函数是系统的守恒量;数值计算辐射强度角分布的合理途径是将辐射迁移方程离散成以离散Hamilton函数为守恒量的有限维K-辛空间上的正则方程,并采用保离散Hamilton函数守恒的K-辛算法数值求解. 相似文献