全文获取类型
收费全文 | 2312篇 |
免费 | 113篇 |
专业分类
财政金融 | 399篇 |
工业经济 | 137篇 |
计划管理 | 424篇 |
经济学 | 514篇 |
综合类 | 9篇 |
运输经济 | 21篇 |
旅游经济 | 55篇 |
贸易经济 | 411篇 |
农业经济 | 85篇 |
经济概况 | 369篇 |
邮电经济 | 1篇 |
出版年
2023年 | 15篇 |
2022年 | 14篇 |
2021年 | 27篇 |
2020年 | 51篇 |
2019年 | 73篇 |
2018年 | 87篇 |
2017年 | 84篇 |
2016年 | 76篇 |
2015年 | 55篇 |
2014年 | 72篇 |
2013年 | 313篇 |
2012年 | 113篇 |
2011年 | 99篇 |
2010年 | 97篇 |
2009年 | 103篇 |
2008年 | 79篇 |
2007年 | 98篇 |
2006年 | 67篇 |
2005年 | 57篇 |
2004年 | 54篇 |
2003年 | 50篇 |
2002年 | 52篇 |
2001年 | 45篇 |
2000年 | 37篇 |
1999年 | 40篇 |
1998年 | 42篇 |
1997年 | 35篇 |
1996年 | 21篇 |
1995年 | 23篇 |
1994年 | 16篇 |
1993年 | 21篇 |
1992年 | 17篇 |
1991年 | 16篇 |
1990年 | 14篇 |
1989年 | 11篇 |
1987年 | 11篇 |
1985年 | 17篇 |
1984年 | 12篇 |
1983年 | 18篇 |
1982年 | 19篇 |
1981年 | 12篇 |
1980年 | 23篇 |
1979年 | 19篇 |
1978年 | 12篇 |
1977年 | 10篇 |
1975年 | 13篇 |
1971年 | 10篇 |
1963年 | 11篇 |
1961年 | 11篇 |
1960年 | 9篇 |
排序方式: 共有2425条查询结果,搜索用时 62 毫秒
1.
Review of World Economics - This paper focuses on an unexamined area of trade—the behaviour of heterogeneous intermediate suppliers facing final producers of different ability and pursuing... 相似文献
2.
Sequels have become a profitable strategy in the U.S. motion picture industry because of their strong name recognition. However, while the established positioning of a sequel may help insulate it from competing firms' advertising messages, its familiarity may cause moviegoers to be more easily satiated with advertising from the sequel. Therefore, this study examines how sequels differ from original concept movies in terms of their ad effectiveness. We focus our analysis on pre-launch periods, given these periods' importance in shaping the financial outcomes of motion pictures. We consider the weekly online search volume of a movie as a measure of consumer interest in it, and thus as an intermediate response to pre-launch advertising. We then develop a model that assumes ad effectiveness can decline, due to copy and repetition wearout, and increase, due to forgetting, over time. We find that copy wearout is greater for original movies, while repetition wearout and forgetting are greater for sequels. These findings suggest that sequels should allocate more in early pre-launch periods and less immediately before release, relative to originals, to maximize pre-launch consumer interest. 相似文献
3.
4.
Farmers in the Vietnamese Mekong Delta face a wide range of climate-related and hydrological factors which threaten rice production. Smallholder farmers must adapt to climate change to sustain rice production as their central and most important livelihood activity. A sample was stratified across agro-ecological areas in the Delta affected by flooding, alluvial soils, acid sulphate soils, and saline water intrusion and by derived farmer typologies. A rural livelihoods approach was used in focus group discussions and in-depth interviews to identify and enumerate enabling and constraining adaptation factors. Smallholders experienced diverse natural hazards such as floods, abnormal rains, high temperatures, water scarcity, and salinity intrusion specific to the agro-ecological areas. Adaptation was constrained by labour shortages, water quality, topography, access to combine harvesters, transportation infrastructure, dryers and household savings. Adaptation was enabled by farming techniques and experience, cooperative groups, water quantity, access to information, and ability to purchase agro-chemicals through credit. Small farmers (< 1?ha) were more constrained than large farmers (> 1?ha) who had an expanded livelihood asset base. A range of policy implications are discussed, but adaptation is not just about technological fixes but requires overall improvements in a range of human, social and financial components. 相似文献
5.
6.
Jan W. Van Deth 《Quality and Quantity》1986,20(2-3):261-272
This article presents an application of Prezeworski and Teune's so-called “identity-equivalence method” to a large set of indicators of political participation. By relaxing commonly held assumptions about necessary distinctions among types of participation, it is found that the distinction between “conventional” and “unconventional” modes of participation is unnecessary, while the distinction between “government” and “nongovernment” has some merit. The findings also lend further support to the claims of Prezeworski and Teune that the identity-equivalence method is preferable to the identical indicator method. 相似文献
7.
This article explores the contradiction between the articulated investment policies, screening criteria or ethical charters of socially responsible investment funds and their actions demonstrated by their portfolio selection practice. The paper provides a background to socially responsible investment and Australia's contribution to greenhouse gas emissions. A discussion of renewable energy options lays the foundation for our main assertion: that this set of possible alternatives provides some new and more environmentally robust options that will better complement the underlying philosophy of funds in the socially responsible investment sector. 相似文献
8.
9.
We investigate whether recent changes in welfare policy affect the migration of low-educated unmarried mothers. Estimates indicate that welfare reform is associated with an increase in employment-related intrastate migration, and a decrease in non-employment related migration, both within and between states. The net effect was a small increase in intrastate migration and a small decrease in interstate migration. The close link between migration and employment suggests that welfare reform has motivated low-income women to move for economic reasons. In general, welfare policy appears to have a much larger effect on residential location because of its relationship to employment than because of benefit differences between states. 相似文献
10.
Ho Li-Chin Jennifer Tsay Jeffrey J. 《Review of Quantitative Finance and Accounting》2001,17(3):267-282
Prior studies show that the beta coefficient of a security changes systematically as the length of measurement interval is varied. This phenomenon, which is called the intervalling effect bias in beta, has been attributed to the friction in the trading system that causes the delays in the price-adjustment process. This study shows that option listing is associated with a decline in the beta intervalling effect bias. The decline is most pronounced for small firms. We also find that our sample firms grow significantly after option listing. Since prior research indicates that market value is a major determinant of the magnitude of the intervalling effect, we re-examine our results using a subsample that controls for market value. The results indicate that the decline in the beta bias from the pre-listing to post-listing period is still prevalent after we control for the change in firm size. Overall, the evidence is consistent with the notion that option trading reduces the delays in the price-adjustment process, which in turn reduces the intervalling effect bias in beta. 相似文献