While millions of products are sold on its retail platform, Amazon.com itself stocks and sells only a very small fraction of them. Most of these products are sold by third-party sellers who pay Amazon a fee for each unit sold. Empirical evidence clearly suggests that Amazon tends to sell...

Energy-efficient renovation of existing residential buildings is an important energy policy in China, but financing difficulties seriously hinder the promotion of the policy. In this article, novel indices based on benefit-cost analysis are presented to overcome the barriers. Firstly,...

The use of methanol vapor is helpful to reduce the effect of methanol crossover in a direct methanol fuel cell. This study develops a passive vapor-feed direct methanol fuel cell (VF-DMFC) based on a pervaporation membrane and sintered porous metals which act as functional layers for effective...

Currently, a series of ecological environmental problems have been brought about by high-intensity intervention of human beings, and ecological security is regarded as one of the most important national survival strategies. A methodology of urban eco-security evaluation has been introduced,...

type="main" <title type="main">ABSTRACT</title> <p>Recent studies document that market participants react positively to the positive language sentiment or tone embedded in financial disclosures, and that investors’ reactions to negative news are more muted with poor disclosure readability. However, while language sentiment...</p>

We estimate the effects of three sequential reforms undertaken between 2000 and 2006 on school enrollment for poor, rural families in China. Using difference-in-difference approaches and sample children from the China Health and Nutrition Survey 2000, 2004, and 2006 waves, we find that tuition...

The upper Nanpan river in Qujing city, Yunnan province, China is heavily polluted. Its main stream (122 km long) is designated as water for industrial and agricultural use. However, the instream water quality is unsuitable for any use. Industrial discharges and municipal sources contribute...

Water pollution is one of China's most pressing environmental issues, but a recent economic study in Yunnan province has found that in certain cases market forces can be harnessed to effectively drive river clean-up. The study looked at the feasibility of allowing industries along the...

A discharge permit system for water pollution of theupper Nanpan River has been tested since 1992. Thispaper proposed the shift of the current non-tradablepermits to tradable permits to attain the samepollution reduction targets at a lower cost. It wasfound that this river appeared good for...

We propose a hierarchical Bayesian model for analyzing multi-site experimental fMRI studies. Our method takes the hierarchical structure of the data (subjects are nested within sites, and there are multiple observations per subject) into account and allows for modeling between-site variation....