| Dick Langlois |
The new table-of-contents alert from Industrial and Corporate Change carries an interesting new paper by Carliss Baldwin and her coauthors called “The Architecture of Transaction Networks: A Comparative Analysis of Hierarchy in Two Sectors.” Here’s the abstract:
Many products are manufactured in networks of firms linked by transactions, but comparatively little is known about how or why such transaction networks differ. This article investigates the transaction networks of two large sectors in Japan at a single point in time. In characterizing these networks, our primary measure is “hierarchy,” defined as the degree to which transactions flow in one direction, from “upstream” to “downstream.” Our empirical results show that the electronics sector exhibits a much lower degree of hierarchy than the automotive sector because of the presence of numerous inter-firm transaction cycles. These cycles, in turn, reveal that a significant group of firms have two-way “vertically permeable boundaries”: (i) they participate in multiple stages of an industry’s value chain, hence are vertically integrated, but also (ii) they allow both downstream units to purchase intermediate inputs from and upstream units to sell intermediate goods to other sector firms. We demonstrate that the 10 largest electronics firms had two-way vertically permeable boundaries while almost no firms in the automotive sector had adopted that practice.
As I was downloading the article from the ICC website, a link to the Best Twenty ICC Articles from First Twenty Years of Publication (1992-2011) caught my eye. Definitely some interesting and important articles on this list, which was chosen by the editors. But I was struck that there is no overlap at all between this list and the list of 20 most cited articles in ICC. On a quick and sloppy count, there is an overlap of only 3 with the top 50 most cited. (Similar story for most read, where there is one overlap with the top 20.) Given my interest in this odd fact, perhaps you can guess on which lists my own articles lie.