Input–output linkages and optimal product diversity

Optimal Diversity Product of Code Size 6

In this correspondence, we propose some new designs of 2 2 unitary space-time codes of sizes 6; 32; 48; 64 with best known diversity products (or product distances) by partially using sphere packing theory. In particular, we present an optimal 2 2 unitary space-time code of size 6 in the sense that it reaches the maximal possible diversity product for 22 unitary space-time codes of size 6. The ...

Optimal Control of Unknown Nonlinear System From Inputoutput Data

Scaling of global inputoutput networks

Examining scaling patterns of networks can help understand how structural features relate to the behavior of the networks. Input–output networks consist of industries as nodes and inter-industrial exchanges of products as links. Previous studies consider limitedmeasures for node strengths and link weights, and also ignore the impact of dataset choice. We consider a comprehensive set of indicato...

Immigration and product diversity

We study the effects of immigration on the diversity of consumption choices. Data from California in the 1990s indicate that immigration is associated with fewer stand-alone retail stores and a greater number of large and in particular big-box retailers—evidence that likely contradicts a diversityenhancing effect of immigration. In contrast, focusing on the restaurant sector for which we can be...

Product Market Linkages and the Spillovers from Corporate Debt Restructurings

We model the spillovers from a distressed firm’s debt restructuring to its competitors and related firms. We demonstrate that there are two channels for these spillovers: a direct channel that transmits the effect of bankruptcy on the firm’s competitiveness, and an indirect channel that transmits information about the firm. When the indirect channel is dominant, a firm’s bankruptcy pushes up it...