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次回のセミナー
2012年2月17日(金)
15:30-18:00
経済学部東館(旧称:法経総合研究棟)8F リフレッシュルーム

15:30-16:30
Geum Soo Kim
(Hoseo University)

The Evolution of Citizen Participation and Regulatory Success
(Akao, K.との共著)

要旨:
In an evolutionary game framework it is shown that a full compliance with an environmental regulation can be evolved as an asymptotically stable state, but this critically depends on the size of a defector's additional payoff at no private monitoring to a cooperator's payoff, relative to his expected fine from an enforcer's monitoring. When the regulatory agency introduces the report-reward system to pay report prizes to citizens and reduce its monitoring activity level simultaneously, citizens' participation is important. We have shown that with some parameter values an initial state can be led into perfect compliance, or otherwise it should have led into perfect non-compliance.

Keywords: Regulation, Monitoring, Citizen Participation, Social Capital, Evolutionary Game

16:45-17:45
赤尾健一
(早稲田大学)

On the critical capital stock in a continuous time aggregate growth model with a nonconcave production function
(Kamihigashi, T.とNishimura, K.との共著)

要旨:
An intrinsic feature of a nonconcave optimal growth model is the critical capital stock such that any optimal capital path from an initial stock below this critical stock converges to zero, and any optimal capital path from an initial capital stock above this critical stock converges to a nonzero steady state. Generically, the critical capital stock is not an optimal steady state and the existence depends on the value of the discount rate. For a continuous time aggregate growth model, we show that: (a) the critical capital stock is a continuous function of the discount rate, (b) it strictly increases from zero as the discount rate increases from the level of the marginal productivity at the zero stock level, (c) the upper limit of the critical capital stock lies between the stock level at which the marginal productivity is maximized and the stock level at which the average productivity is maximized, and (d) at the upper limit, the critical capital stock merges with an interior optimal steady state, and with greater discount rates, the steady state is not optimal or does not exist.

Keywords: Aggregate growth model, convex--concave production function, critical capital stock

今後の予定


環境経済学セミナーについて
京都大学「環境経済学セミナー」は、環境・資源経済学の研究者を学内外から広くお招きし、最新の研究に関する報告と討論を行うことを目的として不定期に開催するものです。
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主催:植田和弘研究室
運営担当:阪本浩章


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