Philippe Aghion 和 Peter Howitt 建立了一个数学模型 创造性破坏 基于熊彼特的思想。在他们的内生增长模型中,技术进步是长期经济增长的引擎。新的创新会打破先前创新者的垄断利润,从而导致增长过程本身具有不确定性,并且随着新的、更高质量的产品取代旧产品而呈现爆发式增长。

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Philippe Aghion 和 Peter Howitt 建立了一个数学模型 创造性破坏 基于熊彼特的思想。在他们的内生增长模型中,技术进步是长期经济增长的引擎。新的创新会打破先前创新者的垄断利润,从而导致增长过程本身具有不确定性,并且随着新的、更高质量的产品取代旧产品而呈现爆发式增长。
阿吉翁-豪伊特模型是熊彼特理论在一般均衡框架内形式化的一项里程碑式成就。它属于内生增长模型,其中技术进步的速度,以及由此决定的长期经济增长,是由模型内部的经济因素决定的,而不是像索洛-斯旺模型等早期新古典模型那样,被假定为外部的、外生的力量。
In the model, innovation is a purposeful R&D activity undertaken by firms seeking to gain monopoly profits. A successful innovation creates a new, better-quality product that displaces the existing one, granting the innovator a temporary monopoly. However, this monopoly is itself vulnerable to future innovation. This constant threat of displacement is the “destruction” aspect. The “creative” aspect is that each new innovation builds upon the last, increasing the overall productivity of the economy. The model generates a clear trade-off: stronger patent protection can increase the incentive to innovate by protecting monopoly rents, but it can also slow down the diffusion of technology and subsequent innovations. This makes it a powerful tool for analyzing policies related to R&D, competition, and intellectual property.
阿吉翁-豪伊特创造性破坏模型
(如果日期未知或不相关,例如“流体力学”,则提供其显著出现的近似估计)
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