We study how competition impacts innovation (and welfare) when firms compete both in the product market and in innovation development. This relationship is complex and may lead to scenarios in which a lessening of competition increases R&D and consumer welfare in the long run, contradicting...

Motivated by a longitudinal oral health study, the Signal--Tandmobiel® study, we propose a multivariate binary inhomogeneous Markov model in which unobserved correlated response variables are subject to an unconstrained misclassification process and have a monotone behavior. The multivariate...

The effects of Bénard flows on diffusion-limited aggregation (DLA) is investigated by a growth pattern formation (GPF) computational model. The GPF introduced consists of a DLA process driven by a thermal convection field in a plane viscous incompresible flow. The flow regime is governed by the...

In this paper we investigate the dual role of supply restrictions and drug treatment in combating the concurrent rise of opioid abuse and suicide in the United States over the last two decades. We find that supply-side interventions decrease suicides in places with strong addiction-help...