收费全文 | 3264篇 |
免费 | 89篇 |
财政金融 | 478篇 |
工业经济 | 195篇 |
计划管理 | 459篇 |
经济学 | 812篇 |
综合类 | 76篇 |
运输经济 | 34篇 |
旅游经济 | 68篇 |
贸易经济 | 546篇 |
农业经济 | 207篇 |
经济概况 | 473篇 |
邮电经济 | 5篇 |
2023年 | 17篇 |
2022年 | 23篇 |
2021年 | 39篇 |
2020年 | 70篇 |
2019年 | 97篇 |
2018年 | 113篇 |
2017年 | 125篇 |
2016年 | 113篇 |
2015年 | 78篇 |
2014年 | 117篇 |
2013年 | 372篇 |
2012年 | 145篇 |
2011年 | 166篇 |
2010年 | 143篇 |
2009年 | 128篇 |
2008年 | 113篇 |
2007年 | 97篇 |
2006年 | 82篇 |
2005年 | 62篇 |
2004年 | 55篇 |
2003年 | 51篇 |
2002年 | 54篇 |
2001年 | 43篇 |
2000年 | 56篇 |
1999年 | 41篇 |
1998年 | 37篇 |
1997年 | 39篇 |
1996年 | 34篇 |
1995年 | 19篇 |
1994年 | 31篇 |
1993年 | 36篇 |
1992年 | 41篇 |
1991年 | 31篇 |
1990年 | 32篇 |
1989年 | 23篇 |
1988年 | 31篇 |
1987年 | 24篇 |
1986年 | 21篇 |
1985年 | 36篇 |
1984年 | 37篇 |
1983年 | 43篇 |
1982年 | 31篇 |
1981年 | 34篇 |
1980年 | 29篇 |
1979年 | 31篇 |
1978年 | 27篇 |
1976年 | 22篇 |
1975年 | 23篇 |
1973年 | 26篇 |
1972年 | 17篇 |
As organizational buying systems grow more complex and sophisticated, suppliers increasingly rely on buyer advocacy: an individual buyer’s efforts to influence his/her colleagues such that the supplier’s standing is improved. Drawing from cognitive response theory, the authors hypothesize an inverted U-shaped relationship between a buyer’s advocacy for a supplier and the customer’s purchases from that supplier. They theorize that this effect is moderated by the advocate’s industry experience and customer–supplier relationship characteristics. An analysis of multisource data from a B2B service provider (Study 1) supports the predicted inverted U-shaped relationship, while a unique dataset from a large industrial supplier (Study 2) provides broad support for the hypothesized moderators. Finally, a randomized experiment (Study 3) replicates key findings and corroborates the theorized cognitive response mechanisms. Findings contribute to the limited literature on buyer advocacy within the organizational buying domain and offer practical implications for suppliers and buyers.
相似文献Methods: Two models were developed to represent NVAF and VTE patients, populated with patients from the XANTUS (NCT01606995) and XALIA (NCT01619007) international prospective observational studies. The 1-year cost-effectiveness of rivaroxaban use, compared to VKAs, was explored in a population consisting of NVAF and VTE patients (base case) as well as for four scenarios with sub-populations: NVAF patients only, VTE patients only, NVAF patients with unstable international normalized ratio (INR), and NVAF patients using an INR self-measuring device.
Results: In the base case, rivaroxaban saved €72,350 and gained 21 quality-adjusted life-years (QALYs) in a simulation of 2,000 patients over the use of VKAs. Ergo, rivaroxaban was dominant over VKAs. The probabilistic sensitivity analysis showed a probability of 85% for rivaroxaban being dominant and 100% at a willingness-to-pay threshold of €20,000/QALY. Rivaroxaban appeared to be dominant in all scenarios as well, except for the NVAF-patients-only scenario where the incremental cost-effectiveness ratio (ICER) was €157/QALY.
Conclusions: In patients with NVAF or VTE, rivaroxaban treatment is likely to be cost-effective and a potentially cost-saving alternative to VKA in the Netherlands. 相似文献
We evaluate the effect of performance-based scholarship programs for post-secondary students on student time use and effort and whether these effects are different for students we hypothesize may be more or less responsive to incentives. To do so, we administered a time-use survey as part of a randomized experiment in which community college students in New York City were randomly assigned to be eligible for a performance-based scholarship or to a control group that was only eligible for the standard financial aid. This paper contributes to the literature by attempting to get inside the “black box” of how students respond to a monetary incentive to improve their educational attainment. We find that students eligible for a scholarship devoted more time to educational activities, increased the quality of effort toward and engagement with their studies, and allocated less time to leisure. Additional analyses suggest that students who were plausibly more myopic (place less weight on future benefits) were more responsive to the incentives, but we find no evidence that students who are arguably more time constrained were less responsive to the incentives.
相似文献