全文获取类型
收费全文 | 24147篇 |
免费 | 192篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 3633篇 |
工业经济 | 1323篇 |
计划管理 | 3916篇 |
经济学 | 5317篇 |
综合类 | 1150篇 |
运输经济 | 60篇 |
旅游经济 | 41篇 |
贸易经济 | 5279篇 |
农业经济 | 471篇 |
经济概况 | 2502篇 |
信息产业经济 | 44篇 |
邮电经济 | 604篇 |
出版年
2024年 | 4篇 |
2023年 | 73篇 |
2022年 | 129篇 |
2021年 | 178篇 |
2020年 | 204篇 |
2019年 | 149篇 |
2018年 | 2393篇 |
2017年 | 2237篇 |
2016年 | 1337篇 |
2015年 | 273篇 |
2014年 | 312篇 |
2013年 | 463篇 |
2012年 | 938篇 |
2011年 | 2716篇 |
2010年 | 2593篇 |
2009年 | 2047篇 |
2008年 | 2070篇 |
2007年 | 2375篇 |
2006年 | 628篇 |
2005年 | 892篇 |
2004年 | 631篇 |
2003年 | 710篇 |
2002年 | 389篇 |
2001年 | 193篇 |
2000年 | 99篇 |
1999年 | 60篇 |
1998年 | 48篇 |
1997年 | 25篇 |
1996年 | 36篇 |
1995年 | 17篇 |
1994年 | 11篇 |
1993年 | 16篇 |
1992年 | 10篇 |
1991年 | 9篇 |
1990年 | 6篇 |
1989年 | 8篇 |
1988年 | 6篇 |
1987年 | 4篇 |
1986年 | 15篇 |
1985年 | 7篇 |
1984年 | 12篇 |
1983年 | 3篇 |
1982年 | 4篇 |
1981年 | 2篇 |
1980年 | 3篇 |
1977年 | 2篇 |
1975年 | 1篇 |
1974年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 416 毫秒
991.
Shinichi Yamaguchi Kotaro Iyanaga Hirohide Sakaguchi Tatsuo Tanaka 《The Review of Socionetwork Strategies》2017,11(2):95-110
In this paper, we discuss the substitution effects between mobile games and console games. We estimate such effects by a fixed-effect regression with instrumental variables using panel data of about 100,000 observations. The results showed that the substitution effects of playing smart devices on 3DS, Wii, and PSP were recognizable, but did not have significant effects on PS3, and the substitution effects on PSP were very small. Therefore, mobile games had a substitution effect on casual console games, or on console games in which the play situation resembled mobile games. In addition, the substitution effects were at most about 0.1. The substitution effects were small. Our results indicate that mobile games represent the pioneers in the new market of gaming at least during our observation period. But new games and traditional games will coexist for a while. 相似文献
992.
993.
994.
Cognition of disaster risk in a tourism community: an agricultural heritage system perspective 总被引:2,自引:0,他引:2
Yehong Sun Hongjian Zhou Geoffrey Wall Yunjie Wei 《Journal of Sustainable Tourism》2017,25(4):536-553
Cognition of risk is the first step in reducing disaster damage and losses. In this study, risk cognition in the Hani Rice Terraces, the core tourism attraction in Yuanyang County, Honghe Prefecture, Yunnan, China, is analyzed based on field survey and participatory geographic information system (GIS). The results show that tourism communities have cognition of risk; are more sensitive to hazards (especially drought); have more severe potential damage and losses from hazards; and also have more enthusiasm to adapt to disaster risk, when compared with a non-tourism community. On disaster vulnerability maps, the tourism communities identified the unique “Forest – Village – Terrace - River” landscape while the non-tourism community only recognized the terrace and the village as the main elements affected by hazard. Also, the tourism communities had deeper understandings of drought, flash floods and landslide disaster risks. A conceptual model based on “Pressure – State – Response” relationships is put forward to explore the situation in which, in the tourism community, terraces have a greater variety of functions and enhanced values resulting in the spatial expansion of hazard effects. 相似文献
995.
If overstatements were a symptom of the agency conflict, pay-for-performance sensitivities should have increased in response to the additional penalties for misreporting imposed by SOX. Our finding of their decrease is inconsistent with the view that overstatements were an unintended consequence of incentive pay prior to 2002. To corroborate our interpretation, we show that (i) CEO pay-for-performance sensitivities are higher among firms whose shareholders stand to benefit from overstatements; (ii) this cross-sectional relationship weakens significantly after SOX; and (iii) the within-firm decrease in pay-for-performance sensitivity is most pronounced among firms with high pre-SOX shareholder benefits from overstatements. 相似文献
996.
997.
998.
Henning Vöpel 《Wirtschaftsdienst》2017,97(10):755-756
999.
1000.
Fabian Krüger 《Empirical Economics》2017,53(1):235-246
Ensemble methods can be used to construct a forecast distribution from a collection of point forecasts. They are used extensively in meteorology, but have received little direct attention in economics. In a real-time analysis of the ECB’s Survey of Professional Forecasters, we compare ensemble methods to histogram-based forecast distributions of GDP growth and inflation in the Euro Area. We find that ensembles perform very similarly to histograms, while being simpler to handle in practice. Given the wide availability of surveys that collect point forecasts but not histograms, these results suggest that ensembles deserve further investigation in economics. 相似文献