On the Geography of Global Value Chains Pol Antràs and

On the Geography of Global Value Chains Pol Antràs and
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全球价值链的地理 Pol Antràs 和

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发表时间:
2017
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通讯作者:
Alonso de Gortari
Alonso de Gortari
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作者:
Alonso de Gortari

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B.1 没有顺序性的部分均衡示例 在本附录中,我们重新审视 2.4 节中的四个国家和四个阶段的部分均衡示例,但我们考虑了一种没有顺序性的替代方案。更具体地说,我们仍然考虑具有四个“阶段”的对称柯布-道格拉斯技术,有助于增加价值,但我们假设这四个阶段同时发生,并组合成不可交易的最终商品。我们继续专注于为 D 国的消费者提供服务,因此这可以归结为“蜘蛛”采购模式,其中 D 国的组装商为所需的四种投入中的每一种选择最佳来源。练习的其余细节如第 2.4 节所示:对于所考虑的每个贸易成本水平,我们运行一百万次模拟,其中生产成本 aj cj 是从均值 0 和方差 1 的对数正态分布中为每个阶段 n 和每个国家 j 独立绘制的。
B.1 The Partial Equilibrium Example without Sequentiality In this Appendix, we revisit our partial equilibrium example with four countries and four stages in section 2.4, but we consider an alternative scenario without sequentiality. More specifically, we still consider a symmetric Cobb-Douglas technology with four ‘stages’contributing to value added, but we assume that these four stages occur simultaneously and are combined into a non-tradeable final good. We continue to focus on serving consumers in country D, so this boils down to a “spider” sourcing model in which assemblers in D choose the optimal source for each of the required four inputs. The rest of the specifics of the exercise are as in section 2.4: for each level of trade costs considered, we run one million simulations with production costs aj cj being drawn independently for each stage n and each country j from a lognormal distribution with mean 0 and variance 1.