| Budget Amount *help |
¥2,320,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥420,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2007: ¥500,000 (Direct Cost: ¥500,000)
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| Research Abstract |
In this project, I conduct two studies to investigate the impact of e-commerce on social welfare using two oligopoly models. One is a study in which I construct a new model of horizontal differentiation to examine the impact of a new web channel of physical products, while the other is a study in which I construct a new model of vertical differentiation to examine the impact of a new web channel of information products. I find that the appearance of e-commerce enhances retail competition and always increases consumer surplus in the both studies. However, I also find that social surplus does not necessarily improve in the former, while the social surplus always improves in the latter.
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