论文标题
衡量全球供应网络中的输入等级
Measuring the Input Rank in Global Supply Networks
论文作者
论文摘要
我们将输入等级引入，以衡量全球价值链中直接和间接供应商的相关性。如果该投入的生产率下降会影响买家，我们认为中间输入与下游买家更相关。特别是，在我们的框架中，任何输入的相关性取决于：i）供应商相对于买方的网络位置，ii）中间输入的模式与连接买方和供应商的劳动力强度，iii），以及沿供应链的竞争压力。在计算来自美国和世界投入输出表的投入等级之后，我们就提供了有关服务输入的关键作用以及来自地区综合合作伙伴的国内供应商和供应商相对更高的相关性的有用见解。最后，我们测试输入等级是20,489家控制全球154,836家子公司的美国母公司做出的垂直整合选择的良好预测指标。
We introduce the Input Rank as a measure of relevance of direct and indirect suppliers in Global Value Chains. We conceive an intermediate input to be more relevant for a downstream buyer if a decrease in that input's productivity affects that buyer more. In particular, in our framework, the relevance of any input depends: i) on the network position of the supplier relative to the buyer, ii) the patterns of intermediate inputs vs labor intensities connecting the buyer and the supplier, iii) and the competitive pressures along supply chains. After we compute the Input Rank from both U.S. and world Input-Output tables, we provide useful insights on the crucial role of services inputs as well as on the relatively higher relevance of domestic suppliers and suppliers coming from regionally integrated partners. Finally, we test that the Input Rank is a good predictor of vertical integration choices made by 20,489 U.S. parent companies controlling 154,836 subsidiaries worldwide.
