Insurance claim severity data are characterized by complex distributional phenomenons, where flexible density estimation tools such as the finite mixture models (FMM) necessary. However, maximum likelihood estimations (MLE) often produce unstable tail estimates for FMM. Motivated this challenge, article presents a weighted estimator (MWLE) robust of heavy-tailed Under some regularity conditions...

In this work, we bridge standard adaptive mesh refinement and coarsening on scalable octree background meshes robust unfitted finite element formulations for the automatic efficient solution of large-scale nonlinear solid mechanics problems posed complex geometries, as an alternative to body-fitted formulations, unstructured generation graph partitioning strategies. We pay special attention tho...

This paper studies stability of Model Predictive Control for systems with a finite input alphabet. Since this kind of systems may present a steady-state error under closedloop control, the forms is on stability in the sense of ultimate boundedness of solutions. To derive sufficient conditions for stability, two different approaches are presented. The first one approximates the finite input alph...

In this paper a systematic approach of repairing polygonal meshes is developed for volume meshing, which can then be used in finite element analyses. All poor-quality elements are classified into three general categories: point element, line element, and overlapped element. A robust iterative scheme is proposed to remove all poor-quality elements progressively, leading to a successful volume me...

A semi-analytic tool for the study of the robust stability of time delay systems is presented. The approach is based on graphical methods. The conditions of the Finite Nyquist Theorem for quasipolynomials given in (Santos et al., 2003b) are improved. The Finite Inclusions Theorem for polytopic and interval quasipolynomials families is derived. An algorithm describing how to apply this new techn...

This paper presents a simple and computationally-efficient algorithm for solving steady two-dimensional subsonic and transonic compressible flow over an airfoil. This work uses an interactive viscous-inviscid solution by incorporating the viscous effects in a thin shear-layer. Boundary-layer approximation reduces the Navier-Stokes equations to a parabolic set of coupled, non-linear partial diff...