首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   134篇
  免费   4篇
财政金融   21篇
工业经济   5篇
计划管理   26篇
经济学   29篇
运输经济   4篇
旅游经济   5篇
贸易经济   31篇
农业经济   2篇
经济概况   8篇
邮电经济   7篇
  2023年   2篇
  2022年   1篇
  2021年   4篇
  2020年   5篇
  2019年   5篇
  2018年   6篇
  2017年   3篇
  2016年   4篇
  2015年   6篇
  2014年   5篇
  2013年   18篇
  2012年   10篇
  2011年   5篇
  2010年   9篇
  2009年   8篇
  2008年   8篇
  2007年   6篇
  2005年   4篇
  2004年   3篇
  2003年   5篇
  2002年   2篇
  2001年   1篇
  2000年   3篇
  1996年   1篇
  1995年   1篇
  1991年   1篇
  1990年   2篇
  1989年   2篇
  1988年   2篇
  1987年   2篇
  1986年   1篇
  1985年   1篇
  1982年   1篇
  1980年   1篇
排序方式: 共有138条查询结果,搜索用时 15 毫秒
81.
82.
New policy approaches to facilitate the co-existence of wildlife and livestock are needed for situations where predation incidents greatly impact households’ income and retaliatory killing threatens endangered carnivore species’ survival. In this paper, models are developed to assess how two alternative policy approaches impact a herder’s decisions on carnivore hunting and livestock protection. We find that while the well-established ex-post compensation policy induces suboptimal livestock protection it can generate sufficient incentives for the herder to refrain from hunting so that the carnivore population reaches its socially optimal level. Performance payments are proposed as alternative policy. They are found not to distort livestock protection incentives and can also help achieve a socially optimal carnivore population level. Which of the two scheme types gives rise to less cost is ambiguous. An empirical analysis of the model with data from tiger-livestock conflicts in India is presented.  相似文献   
83.
84.
We propose and study a new method to nonparametrically estimate a discontinuity of a regression function. The optimal rate of convergence n −1 is obtained under minimal assumptions. No smoothing is required.  相似文献   
85.
We examine smallholder farmers’ willingness to pay for agricultural technology and whether information is a constraint to adoption of certified maize seed in Northern Uganda. The uptake of improved maize varieties by smallholder farmers in Uganda remains persistently low, despite the higher yield potential compared to traditional varieties. A recently growing body of literature identifies information constraints as a potential barrier to adoption of agricultural technologies. We used incentive compatible Becker‐DeGroot‐Marschak auctions to elicit willingness to pay for quality assured improved maize seed by 1,009 smallholder farmers, and conducted a randomised evaluation to test the effect of an information intervention on farmers’ knowledge of seed certification. Our results show that the randomised information treatment enhanced farmers’ knowledge of certified seed. However, using the information treatment as an instrumental variable for knowledge, we find no evidence of a causal effect of knowledge on willingness to pay, suggesting that even though farmers are information constrained, this constraint does not affect adoption of certified seed directly. Nevertheless, only 14% of sampled farmers were willing to pay the market price, which corresponds closely with actual observed demand for certified seed in the previous season. This suggests that there are other barriers to adoption than information and awareness.  相似文献   
86.
Internet shopbots allow consumers to almost instantly compare prices and other characteristics from dozens of sellers via a single website. We estimate the magnitude of consumer search costs and benefits using data from a major shopbot for books. For the median consumer, the estimated benefit from simply scrolling down to search lower screens is $6.55. This amounts to about 60% of the observed price dispersion and suggests that consumers face significant search costs, even in this “nearly-perfect” market. Price elasticities are relatively high compared to offline markets (−7 to −10 in our base model). Furthermore, contrary to the common assumption, search intensity is not correlated with greater price sensitivity. Instead, consumers who search multiple screens put relatively more weight on non-price factors like brand.  相似文献   
87.
88.
We examine trends in innovation output for two highly ranked innovative countries: Finland and Sweden (1970–2013). Our novel dataset, collected using the LBIO (literature-based innovation output) method, suggests that the innovation trends are positive for both countries, despite an extended downturn in the 1980s. The findings cast some doubt on the proposition that the current stagnation of many developed countries is due to a lack of innovation and investment opportunities. Our data show that Finland catches up to, and passes, Sweden in innovation output in the 1990s. In per capita terms, Finland stays ahead throughout the period. We find that the strong Finnish performance is largely driven by innovation increase in just a handfull of sectors, but is not restricted to few companies. Both countries saw a rise in innovation during the dot-com era and the structural changes that followed. Since 2000 however, Sweden has outperformed Finland in terms of total innovations, especially in machinery and ICT, while the Finnish rate of innovation has stabilised. We suggest that these patterns may be explained by different paths of industrial renewal.  相似文献   
89.
In non‐profit organizations (NPOs), volunteers often work alongside paid workers. Such a co‐production setting can lead to tension between the two worker groups. This article examines for the first time if and how volunteers influence the separation of paid employees, and thus it contributes to the debate over whether volunteers can substitute paid workers. Using Austrian data at the organizational level, we find a significant impact of volunteers on the separations of paid workers in NPOs facing increased competition. These findings support the assumption that a partial substitution effect exists between paid workers and volunteers.  相似文献   
90.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号