In this paper we are investigating the long time behaviour of the solution of a mutation competition model of Lotka-Volterra’s type. Our main motivation comes from the analysis of the Lotka-Volterra’s competition system with mutation which simulates the demo-genetic dynamics of diverse virus in their host : dvi(t) dt = vi [

We study the diversity of the density profiles of dark matter halos based on a large set of high-resolution cosmological simulations of 256 3 particles. The cosmological models include four scale-free models and three representative cold dark matter models. The simulations have good force resolution. In each cosmological model, there are about 400 massive halos which have more than 10 4 particl...

As a fundamental characteristic of soil physical properties, the soil Particle Size Distribution (PSD) is important in the research on soil moisture migration, solution transformation, and soil erosion. In this research, the PSD characteristics with distinct methods in different land uses are analyzed. The results show that the upper bound of the volume domain of the clay domain ranges from 5.7...

BACKGROUND This study of patients who received either aggressive or less-aggressive treatment for superficial venous disease was undertaken to determine its effects on deep venous insufficiency (DVI). METHODS From 1998 to 2004, we treated 1,500 consecutive patients with superficial venous disease at our outpatient care center. A total of 100 patients were available for the study; the remainin...

This paper introduces and studies the class of differential variational inequalities (DVIs) in a finite-dimensional Euclidean space. The DVI provides a powerful modeling paradigm for many applied problems in which dynamics, inequalities, and discontinuities are present; examples of such problems include constrained time-dependent physical systems with unilateral constraints, differential Nash g...

The monitoring of agronomic parameters like biomass, water stress, and plant health can benefit from synergistic use all available remotely sensed information. Multispectral imagery has been used for this purpose decades, largely with vegetation indices (VIs). Many multispectral VIs exist, typically relying on a single feature—the spectral red edge—for Where hyperspectral is available, mixture ...

An important step in estimating the index of refraction of electromagnetic scattering problems is to compute the associated transmission eigenvalue problem. We develop in this paper efficient and accurate spectral methods for computing the transmission eigenvalues associated to the electromagnetic scattering problems. We present ample numerical results to show that our methods are very effectiv...

Abstract Clinical Case A 80–year–old man underwent coronary angiography in 2006 because of stable angina. There was chronic total occlusion middle left anterior descending artery requiring percutaneous intervention. In 2009 he for recurrent angina: a severe stent restenosis treated with stenting (DES BMS). The patient subsequently asymptomatic till 2018 when complained exertional dyspnea and St...