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Hicks meets Hotelling: the direction of technical change in capital-resource economies

机译:希克斯遇到霍特林:资本资源经济中技术变革的方向

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摘要

We analyze a two-sector growth model with directed technical change where man-made capital and exhaustible resources are essential for production. The relative profitability of factor-specific innovations endogenously determines whether technical progress will be capital- or resource-augmenting. We show that any balanced growth equilibrium features purely resource-augmenting technical change. This result is compatible with alternative specifications of preferences and innovation technologies, as it hinges on the interplay between productive efficiency in the final sector, and the Hotelling rule characterizing the efficient depletion path for the exhaustible resource. Our result provides sound micro-foundations for the broad class of models of exogenous/endogenous growth where resource-augmenting progress is required to sustain consumption in the long run, contradicting the view that these models are conceptually biased in favor of sustainability.
机译:我们分析了有针对性的技术变革的两部门增长模型,其中人工资本和可用资源对于生产至关重要。因要素而异的创新的相对获利能力是内生的,它决定了技术进步是增加资本还是增加资源。我们表明,任何均衡的增长均衡特征都是纯粹的资源增强型技术变革。该结果与偏好和创新技术的替代规范兼容,因为它取决于最终部门的生产效率与表征可耗尽资源的有效消耗路径的霍特林规则之间的相互作用。我们的结果为广泛的外生/内生增长模型模型提供了良好的微观基础,在这些模型中,需要通过资源增加的进展来长期维持消费,这与这些模型在概念上偏向于可持续性的观点相矛盾。

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