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Nuria Osés-Eraso Frederic Udina Montserrat Viladrich-Grau 《Environmental and Resource Economics》2008,40(4):529-550
We study appropriation strategies in common pool resources where extinction is a credible threat. Here we present an experimental
study of the appropriation of common pool resources in a dynamic setting where resource availability depends on the initial
environmental characteristics of the common resource and on human-induced resource depletion due to users’ appropriation patterns.
Our results show that initial resource scarcity limits appropriation by inducing an initial caution among users that persists
throughout of the game. Additionally, we find that subjects restrain their appropriation strategies when scarcity increases.
However, this concern for resource scarcity is not enough to prevent resource depletion. Agents do not counteract the previous
rounds’ appropriation strategies but follow the appropriation trend. High appropriation levels are followed by higher appropriation
strategies, thus promoting the well known tragedy of the commons. Often concern for resource preservation is not great enough
to limit appropriation.
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The purpose of this paper is to introduce sequential investment strategies that guarantee an optimal rate of growth of the capital, under minimal assumptions on the behavior of the market. The new strategies are analyzed both theoretically and empirically. The theoretical results show that the asymptotic rate of growth matches the optimal one that one could achieve with a full knowledge of the statistical properties of the underlying process generating the market, under the only assumption that the market is stationary and ergodic. The empirical results show that the performance of the proposed investment strategies measured on past nyse and currency exchange data is solid, and sometimes even spectacular. 相似文献
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