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Morelia, Mexico

Universidad Michoacana de San Nicolás de Hidalgo is a public university in Morelia, Michoacán, Mexico, and the oldest institution of higher education in the Americas. The University grants law, economics, computer science medicine, architecture, and dentistry degrees, plus several other additional fields of study, mainly in Humanities, Science and Arts. Wikipedia.

Medina V.,Universidad Michoacana de San Nicolas de Hidalgo | GARCiA J.M.,Morelia Institute of Technology
ACM Computing Surveys | Year: 2014

In the virtualization area, replication has been considered as a mechanism to provide high availability. A high-availability system should be active most of the time, and this is the reason that its design should consider almost zero downtime and a minimal human intervention if a recovery process is demanded. Several migration and replication mechanisms have been developed to provide high availability inside virtualized environments. In this article, a survey of migration mechanisms is reported. These approaches are classified in three main classes: process migration, memory migration, and suspend/resume migration. © 2014 ACM. Source

Sarbach O.,Universidad Michoacana de San Nicolas de Hidalgo | Tiglio M.,University of Maryland University College
Living Reviews in Relativity | Year: 2012

Many evolution problems in physics are described by partial differential equations on an infinite domain; therefore, one is interested in the solutions to such problems for a given initial dataset. A prominent example is the binary black-hole problem within Einstein's theory of gravitation, in which one computes the gravitational radiation emitted from the inspiral of the two black holes, merger and ringdown. Powerful mathematical tools can be used to establish qualitative statements about the solutions, such as their existence, uniqueness, continuous dependence on the initial data, or their asymptotic behavior over large time scales. However, one is often interested in computing the solution itself, and unless the partial differential equation is very simple, or the initial data possesses a high degree of symmetry, this computation requires approximation by numerical discretization. When solving such discrete problems on a machine, one is faced with a finite limit to computational resources, which leads to the replacement of the infinite continuum domain with a finite computer grid. This, in turn, leads to a discrete initial-boundary value problem. The hope is to recover, with high accuracy, the exact solution in the limit where the grid spacing converges to zero with the boundary being pushed to infinity. The goal of this article is to review some of the theory necessary to understand the continuum and discrete initial boundary-value problems arising from hyperbolic partial differential equations and to discuss its applications to numerical relativity; in particular, we present wellposed initial and initial-boundary value formulations of Einstein's equations, and we discuss multi-domain high-order finite difference and spectral methods to solve them. Source

Weber A.,Universidad Michoacana de San Nicolas de Hidalgo
Physical Review D - Particles, Fields, Gravitation and Cosmology | Year: 2012

The study of the Dyson-Schwinger equations of Landau gauge Yang-Mills theory has revealed two types of solutions for the gluon and ghost propagators, with a scaling and a massive (decoupling) behavior in the extreme infrared, respectively. We show that both types of solutions are quantitatively reproduced by applying renormalization group equations of Callan-Symanzik type in an epsilon expansion to the infrared limit of Landau gauge Yang-Mills theory when a mass term for the gluons is added to the action. Only the decoupling solution corresponds to an infrared-stable fixed point in three and four space-time dimensions and is hence expected to be physically realized, in agreement with the results of recent lattice calculations. © 2012 American Physical Society. Source

Choque Rivero A.E.,Universidad Michoacana de San Nicolas de Hidalgo
Complex Analysis and Operator Theory | Year: 2013

This paper continues the former joint investigations of the author with Yu. M. Dyukarev, B. Fritzsche and B. Kirstein on the matrix version of the truncated Hausdorff power moment problem on an intervall [a,b] for a given sequence (sj)j=0 2n of complex q×q matrices. The main aim is to obtain more information on the resolvent matrix. We show that the canonical q×q blocks of the resolvent matrix are q×q matrix polynomials having special orthogonality properties with respect to the original data (sj)j=0 2n. © 2012 Springer Basel AG. Source

Ruiz-Garcia J.,Universidad Michoacana de San Nicolas de Hidalgo
Journal of Earthquake Engineering | Year: 2011

This article presents results of a statistical study focused on evaluating inelastic displacement ratios (i.e., ratio of maximum inelastic displacement with respect to maximum elastic displacement demand) of degrading and non degrading single-degree-of-freedom (SDOF) systems subjected to forward-directivity near-fault ground motions. CR spectra are computed for normalized periods of vibration with respect to the predominant period of the ground motion to provide a better ground motion characterization. This period normalization allows reducing the record-to-record variability in the estimation of CR. An equation to obtain estimates of CR for the seismic assessment of structures exposed to forward-directivity near-fault ground motions is proposed. Copyright © A. S. Elnashai & N. N. Ambraseys. Source

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