Gauge-free cluster variational method by maximal messages and moment matching

We present an implementation of the cluster variational method (CVM) as a message passing algorithm. The kind of message passing algorithm used for CVM, usually named generalized belief propagation (GBP), is a generalization of the belief propagation algorithm in the same way that CVM is a generalization of the Bethe approximation for estimating the partition function. However, the connection between fixed points of GBP and the extremal points of the CVM free energy is usually not a one-to-one correspondence because of the existence of a gauge transformation involving the GBP messages. Our contribution is twofold. First, we propose a way of defining messages (fields) in a generic CVM approximation, such that messages arrive on a given region from all its ancestors, and not only from its direct parents, as in the standard parent-to-child GBP. We call this approach maximal messages. Second, we focus on the case of binary variables, reinterpreting the messages as fields enforcing the consistency between the moments of the local (marginal) probability distributions. We provide a precise rule to enforce all consistencies, avoiding any redundancy, that would otherwise lead to a gauge transformation on the messages. This moment matching method is gauge free, i.e., it guarantees that the resulting GBP is not gauge invariant. We apply our maximal messages and moment matching GBP to obtain an analytical expression for the critical temperature of the Ising model in general dimensions at the level of plaquette CVM. The values obtained outperform Bethe estimates, and are comparable with loop corrected belief propagation equations. The method allows for a straightforward generalization to disordered systems

Reconversión tecnológica de un motor diésel por motor eléctrico en la empresa Promatin S.A.

El constante crecimiento Industrial, no es ajena a la problemática de calentamiento global y por el contrario, lo convierten en un actor fundamental, lo anterior, lleva a este sector productivo a la necesidad de buscar y analizar ofertas tecnológicas más limpias, que permitan reducir sus emisiones de CO2, aumentar la eficiencia productiva y energética, obtener beneficios económicos y mejorar las condiciones sociales y de seguridad de sus trabajadores. Además de las variables mencionadas, la decisión de seleccionar una alternativa tecnológica en búsqueda de la sostenibilidad cuenta con otros problemas de carácter técnico, relacionadas con los altos costos, estrategias de financiación y falta de conocimiento, entre otros. Este proyecto de investigación orientado a un estudio de huella de carbono, propone ilustrar las ventajas y potencialidades que conllevaría una alternativa de producción más limpia a través de mejoras tecnológicas, al sustituir un motor Diésel por un motor Eléctrico en Compactadora (Prensa) de chatarra en estado estacionaria en el sector Siderúrgico. En este sentido, se procedió a realizar visitas técnicas en la Empresa Promatin S.A. y luego de analizar la información disponible se procedió a realizar los cálculos y determinar el desempeño de la reconversión tecnológica

Crustal Characteristics in the Subduction Zone of Mexico: Implication of the Tectonostratigraphic Terranes on Slab Tearing

During the past years, significant work has been done for studying the crustal anisotropy and state of stress of the Mexican subduction zone. At the same time, there is new evidence of the geometry of the subducted slab proposing subduction tearing. Here, we present a study of the Earth crust using three different methods: azimuthal anisotropy based on ambient noise, shear‐wave splitting of tectonic tremors, and moment tensor inversions of the earthquakes of 7 September 2017 M_w 8.2 Tehuantepec, Mexico. This earthquake initiated a seismic sequence that triggered shallow seismicity and aftershocks. The shallow earthquakes fall into a region where there were few published focal mechanism higher than M_w 4.5. Two slab tearings: in the Michoacán–Guerrero border and in central Oaxaca, best represent the slab geometry of the Mexican subduction zone. At the Michoacán–Guerrero, the subducted slab is subhorizontal, whereas in central Oaxaca the plate is characterized by northeast vergence. We interpret that the mantle’s flow in this part of the subducted slab produces multiple alignments in the crust and differentiates the tectonostratigraphic terranes of the southern region of Mexico

Estimation of neuronal activity and brain dynamics using a dual Kalman filter with physiologycal based linear model

In this research article a dynamic estimation of neuronal activity and brain dynamics from electroencephalographic (EEG) signals is presented using a dual Kalman filter. The dynamic model for brain behavior is evaluated using physiological-based linear models. Filter performance is analyzed for simulated and clinical EEG data, over several noise conditions. As a result a better performance on the solution of the dynamic inverse problem is achieved, in case of time varying parameters compared with the system with fixed parameters and the static case. An evaluation of computational load is performed when predicted dynamic cases, estimated using the Kalman filter, are up to ten times faster than the static case

The facility manager architect : the social responsability as an added value.

From the very first steps to execute a building, it is essential to analyze its life cycle. Similarly, we should consider the life cycle when projecting an urban intervention. Professionals of the Facility Management take part in construction projects, developing and managing DBFMO projects (Design, Build, Finance, Maintenance & Operate). Whatever the nature of the promoter is – private or public – promoters are leaders in projects of responsible management of spaces, whether these are work spaces, leisure spaces or residential spaces. They know and identify with the company and its performance, its values and its needs. These professionals give sustainable solutions in the life cycle of buildings (offices and housing), new ways to work and initiatives of innovations linked to current social changes: technology, social networks, and new habits. Concepts where innovation is essential should consider responsible values. Social, economic and sustainable aspects have to associate with the management performed by a Facilities Manager when considering the three groups of stakeholders with which it is linked: economic (shareholders), contractual (users), non-contractual (neighborhoods, organizations, etc.). Marcus Vitruvius Pollio, at the beginning of his book "The Ten Books on Architecture" describes and argues how the distribution in buildings must always adapt to their inhabitants. Let us build cities and buildings with responsible criteria, bearing in mind all its users and the needs of each one of them. Not to mention the need to adapt to future requirements with minimum cost and maximum profitability. These needs, under responsible management, are competencies developed by a Facilities Manager in his day to day. He cares and takes over the entire life cycle of buildings and their surroundings. This work is part of the PhD project whose main aim is to study the added value to the architectural profession when social responsibility criteria are applied in his/her role as Facility Manager

People and Facility Management. The team: the main asset of any management

From the moment we enter a large office building until we leave it, we receive a lot of attentions served by the management of services to the user. However, it is usually quite inappreciable the work that is being developed to keep things running smoothly.The services provided in a building are carried out by people. However, we often tend to forget these people when we talk about the tasks that make that a building operates properly 24 hours a day, 365 days a year.But, for example, what would happen if one day the service provided by the reception in a large building did not function as it should? What would it be like if one day the person performing the service of maintenance of the building's cleaning were not at his post? How would the working day develop if there were not a correct air handling system?People are the foundation of the proper functioning of a building. The work of the Facilities Manager and the Facility Management is the management of their functions: the responsible management of the team

People, management and social responsability. The team: the main asset of any management

People, management and social responsability. The team: the main asset of any management. En colaboración con Dña. Montserrat Castellanos Moreno. Profesora Asociada de la Universidad Europea. Journal of Management and Marketing. Thomson Reuters. Zilina. Slovaki

La regionalización para la planeación y el desarrollo en Jalisco. La experiencia desde la perspectiva del Comité de Planeación para el Desarrollo (2001-2007)

La intención de este reporte es describir los principales trabajos que se realizaron durante el periodo 2001-2007 en la Coordinación General del Comité de Planeación para el Desarrollo (COPLADE) del Gobierno del Estado de Jalisco. El reporte se divide en dos apartados, en el primero, se narra el proceso de actualización de los Planes de Desarrollo Regional en Jalisco, que involucró y movilizó a una gran cantidad de actores gubernamentales, políticos y sociales. El motivo de incluir esta etapa es para poder referir las razones que originaron dicho proceso de actualización y para entender las condiciones endógenas y exógenas que lo facilitaron o dificultaron. En el otro componente del reporte, se describe el modelo de planeación que se diseñó junto con el equipo técnico de COPLADE para que el proceso pudiera ser inducido, en su caso aceptado y adoptado por las instancias estatales, regionales y municipales, y se ahonda sobre las razones por las que se eligieron, diseñaron o adecuaron determinadas herramientas. Adicionalmente, se presentan algunos de los productos generados a partir del modelo y se describen los aciertos y errores que se tuvieron durante el proceso

Hacia una proposición epistemo-metodológico para el estudio de los fenómenos ambientales (preliminar)

No disponible/Not availabl