Awareness of pandemics and the impact of COVID-19

La conciencia de los individuos y las sociedades sobre el alcance de las infecciones víricas y otros riesgos de cola puede influir en el impacto socioeconómico que estas dejan a lo largo del tiempo. La literatura muestra que la exposición a episodios negativos o extremos durante la trayectoria vital de las personas puede continuar afectándoles sustancialmente más adelante, ya que su percepción de la probabilidad de que estos eventos ocurran en el futuro se ve alterada. Este artículo utiliza la exposición histórica de un país a epidemias y otros eventos catastróficos como un instrumento de la conciencia de experiencias previas. Los resultados, utilizando una sección cruzada de más de 150 países, sugieren que en aquellas sociedades que se han mostrado «más conscientes», el COVID-19 ha tenido un menor impacto en términos de coste humano y, hasta cierto punto, también económico.“Awareness” about the occurrence of viral infectious (or other) tail risks can influence their socioeconomic inter-temporal impacts. A branch of the literature finds that prior lifetime exposure to signicant shocks can affect people and societies, i.e. by changing their perceived probability about the occurrence of an extreme, negative shock in the future. In this paper we proxy “awareness” by historical exposure of a country to epidemics, and other catastrophic events. We show that in a large cross-section of more tan 150 countries, more “aware” societies suffered a less intense impact of the COVID-19 disease, in terms of loss of lives and, to some extent, economic damage

Efficient integral equation formulation for inductive waveguide components with posts touching the waveguide walls

In this paper a surface integral equation technique is employed for the analysis of inductive waveguide problems containing metallic or dielectric objects of arbitrary shape, focusing on the case where these objects are connected to the waveguide walls. Using the extinction theorem, the main problem is split into two problems. In the first one the parallel plate waveguide Green’s functions are used. Because of the choice of these functions, the side of the object touching the waveguide wall is not considered for discretization in a method of moments analysis. The second problem is applied inside the dielectric object, and uses the free space Green’s functions. It is shown that an additional spatial image is needed to impose the proper boundary conditions for the fields on the side touching the waveguide wall in the original problem. Results show the importance of including this additional image in the formulation for the correct behavior of the fields. With the proposed technique, the paper explores some alternatives for designing specific filter responses using dielectric posts inside cavity filters. Comparisons with a commercial finite elements tool demonstrate the accuracy of the proposed integral equation formulation.This work has been developed with support from the Spanish National Project (CICYT) with Ref TEC2004-04313-C02-02/TCM, and the Regional Seneca Project with Ref 02972/PI/05

Incremento de prestaciones en el acceso en Grid de datos

Ponencias de las Decimosextas Jornadas de Paralelismo celebradas del 13 al 16 de septiembre de 2005 en GranadaEl modelo de computación Grid ha evolucionado en los últimos años para proporcionar un entorno de computación de altas prestaciones en redes de área amplia. Sin embargo, uno de los mayores problemas se encuentra en las aplicaciones que hacen uso intensivo y masivo de datos. Como solución a los problemas de estas aplicaciones se ha utilizado la replicación. Sin embargo, la replicación clásica adolece de ciertos problemas como la adaptabilidad y la alta latencia del nuevo entorno. Por ello se propone un nuevo algoritmo de replicación y organización de datos que proporciona un acceso de altas prestaciones en un Data Grid.Publicad

Hacia el origen de los vascos. Secuencias de DNA mitocondrial antiguo del País Vasco.

Sin resume

Analysis of Inductive Waveguide Microwave Components Using An Alternative Port Treatment And Efficient Fast Multipole

This paper presents a simple and alternative approach for the analysis of inductive waveguide microwave components. The technique uses a surface integral equation formulation, in which the contours of the waveguide walls and of the inner obstacles are all discretized using triangular basis functions. In order to avoid the relative convergence problem of other techniques based on mode matching, an alternative port treatment is used. The technique is based on the application of the extinction theorem using the spatial representation of the Green's functions in the terminal waveguides. In addition, the Fast Multipole Method is proposed in order to reduce the computational cost for large problems. Different complex structures are analyzed, including microwave bandpass filters with elliptic transfer functions, waveguide bends and T-junctions. Results show the high accuracy and versatility of the technique derived

Cluster Analysis of Finger-to-nose Test for Spinocerebellar Ataxia Assessment

El test Finger-to-nose test (FNT) es una evaluación neurológica para estudiar la coordinación. Se presenta una metodología de análisis de datos de FNT, que permite evaluar la evolución del estado de enfermos de Ataxia Espinocerebral de tipo 2 (SCA2), mediante técnicas de aprendizaje computacional.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Multipactor radiation analysis within a waveguide region based on a frequency-domain representation of the dynamics of charged particles

A technique for the accurate computation of the electromagnetic fields radiated by a charged particle moving within a parallel-plate waveguide is presented. Based on a transformation of the time-varying current density of the particle into a time-harmonic current density, this technique allows the evaluation of the radiated electromagnetic fields both in the frequency and time domains, as well as in the near- and far-field regions. For this purpose, several accelerated versions of the parallel-plate Green’s function in the frequency domain have been considered. The theory has been successfully applied to the multipactor discharge occurring within a two metal-plates region. The proposed formulation has been tested with a particle-in-cell code based on the finite- difference time-domain method, obtaining good agreement.The authors would like to thank ESA/ESTEC for having funded this research activity through the Contract “RF Breakdown in Multicarrier Systems” ͑Contract No. 19918/06/NL/GLC͒

Mitochondrial membrane models built from native lipid extracts: Interfacial and transport properties

The mitochondrion is an essential organelle enclosed by two membranes whose functionalities depend on their very specific protein and lipid compositions. Proteins from the outer mitochondrial membrane (OMM) are specialized in mitochondrial dynamics and mitophagy, whereas proteins of the inner mitochondrial membrane (IMM) have dedicated functions in cellular respiration and apoptosis. As for lipids, the OMM is enriched in glycerophosphatidyl choline but cardiolipin is exclusively found within the IMM. Though the lipid topology and distribution of the OMM and IMM are known since more than four decades, little is known about the interfacial and dynamic properties of the IMM and OMM lipid extracts. Here we build monolayers, supported bilayers and giant unilamellar vesicles (GUVs) of native OMM and IMM lipids extracts from porcine heart. Additionally, we perform a comparative analysis on the interfacial, phase immiscibility and mechanical properties of both types of extract. Our results show that IMM lipids form more expanded and softer membranes than OMM lipids, allowing a better understanding of the physicochemical and biophysical properties of mitochondrial membranes.Fil: Schiaffarino, Olivia. Universidad Complutense de Madrid; EspañaFil: Valdivieso González, David. Hospital Universitario 12 de Octubre; España. Universidad Complutense de Madrid; EspañaFil: García Pérez, Inés M.. Universidad Complutense de Madrid; EspañaFil: Peñalva, Daniel Alejandro. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Bahía Blanca. Instituto de Investigaciones Bioquímicas de Bahía Blanca. Universidad Nacional del Sur. Instituto de Investigaciones Bioquímicas de Bahía Blanca; Argentina. Universidad Nacional del Sur; ArgentinaFil: Almendro Vedia, Víctor G.. Universidad Complutense de Madrid; España. Hospital Doce de Octubre, Madrid; EspañaFil: Natale, Paolo. Universidad Complutense de Madrid; España. Hospital Universitario 12 de Octubre; EspañaFil: López Montero, Iván. Universidad Complutense de Madrid; España. Hospital Universitario 12 de Octubre; Españ

Factores desencadenantes del pie diabético en pacientes con Diabetes Mellitus

Introduction: diabetes mellitus constitutes a public health problem worldwide characterized by its high rate of morbidity and mortality, high costs and chronic complications.Objective: to determine the factors associated with the appearance of diabetic foot in diabetic patients.Material and method: an observational case-control study was carried out to determine the influence of some risk factors that lead to a diabetic foot in diabetic patients at the Asdrúbal López Vázquez Polyclinic, Guantánamo in 2019. The universe of study was It was made up of a total of 52 diabetic patients, belonging to the two basic work groups of the polyclinic, and a group called control was also consigned, consisting of 104 diabetic patients included in the same health area and study period.Results: age over 50 years (p = 0,05),), smoking habit (p = 0,01), hypercholesterolemia (p = 0,02), obesity (p = 0,03), hypertension were significant in a bivariate way. Blood glucose (p = 0,02), lack of glycemic control (p = 0,01), non-adherence to hypoglycemic treatment (OR = 0,01), onychomycosis in the feet (p = 0,01) and use of inappropriate footwear (p = 0,02).Conclusions: diabetics over 50 years of age, who present an increase in their body weight above normal, and an inadequate control of glycemia, are more likely to suffer from diabetic foot. Therefore, all the necessary hygienic-dietetic measures must be taken to avoid the appearance of this complication and thus extend the life of these patients.Introducción: la diabetes mellitus constituye un problema de salud pública a nivel mundial caracterizada por su alta tasa de morbimortalidad, altos costos y complicaciones crónicas.Objetivo: determinar los factores asociados a la aparición de pie diabético en los pacientes diabéticos. Material y método: se realizó un estudio observacional, analítico, de tipo casos y controles para determinar la influencia de algunos factores de riesgos que conllevan a un pie diabético en los pacientes diabéticos del Policlínico Asdrúbal López Vázquez, Guantánamo en el año 2019. El universo de estudio se conformó por un total de 52 pacientes diabéticos, pertenecientes a los dos grupos básicos de trabajo del policlínico y se consignó además, un grupo que se denominó control, constituido por 104 pacientes diabéticos incluidos en la misma área de salud y período de estudio. Se utilizó estadística descriptiva e inferencial.Resultados: resultaron significativas de forma bivariada, la edad mayor de 50 años (p=0,05), el hábito de fumar (p=0,01), la hipercolesterolemia (p=0,02), la obesidad (p=0,03), la hipertensión arterial (p=0,02), el no control de la glucemia (p=0,01), la no adhesión al tratamiento hipoglicemiante (OR=0,01), la onicomicosis en los pies (p=0,01) y el uso del calzado inadecuado (p=0,02).Conclusiones: los diabéticos mayores de 50 años de edad, que presenten aumento de su peso corporal por encima de lo normal, y un inadecuado control de la glucemia, son más propensos de padecer de pie diabético. Por lo que se debe tomar todas las medidas higiénico-dietéticas necesarias para evitar la aparición de esta complicación

Numerical evaluation of the Green's functions for arbitrarily shaped enclosures

In this paper, a new spatial method has been implemented for the efficient calculation of the mixed potential Green's functions associated to electrical sources, when they are placed inside arbitrarily-shaped cylindrical cavities. The technique consists of placing electric dipole images and charges outside the cavity, imposing, at discrete points of the metallic wall, the appropriate boundary conditions for the potentials. Results show that the numerical convergence is attained fast. The cut-off frequencies and potential patterns for a trapezium-shaped waveguide are compared to those obtained by a standard finite elements technique, showing excellent agreement. Furthermore, a printed planar filter shielded in a square cavity has been analyzed with the new Green's functions, showing the practical value of the new theory.This work has been supported by Spanish National project CICYT-TEC2004-043 13-C02-02/TCM, and by Fundacion Séneca project, Ref. 02972/PI/0