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Learning by Doing vs Learning by Researching in a Model of Climate Change Policy Analysis

机译:通过气候变化政策分析模型研究边做边学

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摘要

Many predictions and conclusions in climate change literature have been made on the basis of theoretical analyses and quantitative models that assume exogenous technological change. One may wonder if those policy prescriptions hold in the more realistic case of endogenously evolving technologies. In previous work we modified a popular integrated assessment model to allow for an explicit role of the stock of knowledge which accumulates through R&D investment. In our formulation knowledge affects the output production technology and the emission-output ratio. In this paper we make progress in our efforts aimed to model the process of technological change. In keeping with recent theories of endogenous growth, we specify two ways in which knowledge accumulates: via a deliberate, optimally selected R&D decision or via experience, giving rise to Learning by Doing. We simulate the model under the two versions of endogenous technical change and look at the dynamics of a number of relevant variables.
机译:在假设外源技术变化的理论分析和定量模型的基础上,对气候变化文献做出了许多预测和结论。有人可能想知道,这些政策规定是否适用于内生性发展的技术的更为现实的情况。在先前的工作中,我们修改了一种流行的综合评估模型,以明确通过研发投资积累的知识储备的作用。在我们的配方中,知识会影响产出生产技术和排放-产出比。在本文中,我们在旨在模拟技术变革过程的努力中取得了进展。与最新的内生增长理论保持一致,我们指定了两种积累知识的方式:通过有针对性的,最佳选择的研发决策或通过经验,以实践为基础。我们在两个版本的内源性技术变化下模拟该模型,并查看许多相关变量的动态。

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