Erzi Tang

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Many scientists were respected by people and science has made great development in the twentieth century. What role do scientists play in the process of scientific development? Does scientific development bring more researchers into scientists? This paper mainly analyzes the two interested questions and suggests that: (a) not all researchers’ output could(More)
Using a theoretical model, this paper argues that as firm productivity increases, there is a decrease in firm-level pollution intensity. However, as productivity increases, firms tend to increase their aggregate output, which requires the use of additional resources that increase pollution. Hence, an increase in productivity results in two opposing effects(More)
This paper presents a model to analyze the mechanism of the global contribution of energy usage by product exports. The theoretical analysis is based on the perspective that contribution estimates should be in relatively smaller sectors in which the production characteristics could be considered, such as the productivity distribution for each sector. Then,(More)
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