In many credit risk and pricing applications, credit transition matrix is modeled by a constant transition probability or generator matrix for Markov processes. Based on empirical evidence, we model rating transition processes as piecewise homogeneous Markov chains with unobserved structural breaks. The proposed model provides explicit formulas for the posterior distribution of the time-varying...

This paper presents research being conducted at the University of Michigan to design and implement a new, rapid post-disaster building damage reconnaissance technology. The technology being designed will allow onsite damage inspectors to retrieve previously stored building information, superimpose that information onto a real structure in augmented reality, and evaluate building damage, structu...

In this research, we aim to clarify the relationship between the structural distortion due to doping and the superconductivity existence in the FeAs4 structure. For this, we have prepared polycrystalline of NdFeAsO0.8F0.2, NdFeAs0.95Sb0.05O0.8F0.2 and Nd0.99Ca0.01FeAsO0.8F0.2 samples by one-step solid state reaction method. The structural and electrical properties of the samples were characteri...

The competition between external drives and interparticle interactions are important for the static dynamic properties of topological quasiparticles in confined geometries. Here, we study dynamics particlelike skyrmions under a current-induced compression, where stabilized space form skyrmion solid. We find that lattice structural transition nanoscale could be induced by which depends on initia...