| Budget Amount *help |
¥5,441,867 (Direct Cost: ¥4,186,052、Indirect Cost: ¥1,255,815)
Fiscal Year 2013: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2012: ¥891,867 (Direct Cost: ¥686,052、Indirect Cost: ¥205,815)
Fiscal Year 2011: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2010: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2009: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
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| Research Abstract |
Cooperation is a key to maintain ecosystem as commons. However, people do not always cooperate because of the cost of cooperation. Punishment to non-cooperators is said to promote cooperation, but punishment is also costly. Here we investigated how people punish others according to others' cooperation level by evolutionary simulations. I also investigated the evolutionary condition that cooperation is sustainable when people invest their efforts to commons simultaneously and one of then can receive a benefit from commons by rotation by evolutionary simulations.
Terrace rice fields in Japan should be sustainable as Japan's cultural heritages and I decided to make a mathematical and simulation model to investigate what kinds rules and customs maintain terrace rice fields. It is still an ongoing work and I will show you what makes terrace rice field sustainable in a future topic.
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