Products of finite groups and nonmeasurable subgroups

It is proven that if $G$ is a finite group, then $G^\omega$ has $2^{\mathfrak c}$ dense nonmeasurable subgroups. Also, other examples of compact groups with dense nonmeasurable subgroups are presented.Comment: 5 page

Actividades para el aula taller de matemáticas

Se presentan varias actividades para los grados 5°,6°,7°y 8° paera que los docentes realicen con sus estudiantes. Dichas actividades aparecen en los libros que los autores han publicado desde el año anterior

El zombi en el cine fantástico español

Conferencias y Comunicaciones del primer Congreso Internacional de literatura fantástica y ciencia ficción, celebrado del 6 al 9 de mayo de 2008 en la Universidad Carlos III de Madri

Reseñas

Obra ressenyada: Antonio LÁZARO-REBOLL, Spanish horror film. Edinburgh: Edinburgh University Press, 2012

Transformació urbana del barri de “Nostra Llar” a Sabadell

El proyecto consiste en recuperar en clave contemporánea, adaptada a los nuevos modos de vida, la esencia original del barrio, recuperando la calle como espacio central de manzana y motor de la vida social, materializando la condición de privacidad de las calles interiores de manzana que han quedado olvidadas y cedidas al tránsito rodado

Patricia Allmer, Emily Brick y David Huxley (eds.) European Nightmares. Horror Cinema in Europe Since 1945. Columbia University Press/WallFlower. Nueva York, 2012

Obra ressenyada: Patricia ALLMER, Emily BRICK y David HUXLEY (eds.) European Nightmares. Horror Cinema in Europe Since 1945. Nueva York: Columbia University Press/WallFlower, 2012

Systematic Process for Building a Fault Diagnoser Based on Petri Nets Applied to a Helicopter

This work presents a systematic process for building a Fault Diagnoser (FD), based on Petri Nets (PNs) which has been applied to a small helicopter. This novel tool is able to detect both intermittent and permanent faults. The work carried out is discussed from theoretical and practical point of view. The procedure begins with a division of the whole system into subsystems, which are the devices that have to be modeled by using PN, considering both the normal and fault operations. Subsequently, the models are integrated into a global Petri Net diagnoser (PND) that is able to monitor a whole helicopter and show critical variables to the operator in order to determine the UAV health, preventing accidents in this manner. A Data Acquisition System (DAQ) has been designed for collecting data during the flights and feeding PN diagnoser with them. Several real flights (nominal or under failure) have been carried out to perform the diagnoser setup and verify its performance. A summary of the validation results obtained during real flight tests is also included. An extensive use of this tool will improve preventive maintenance protocols for UAVs (especially helicopters) and allow establishing recommendations in regulations. © 2015 Miguel A. Trigos et al.This work has been supported by the project RoboCity2030- III-CM (Robotica Aplicada a la Mejora de la Calidad de Vida ´ de los Ciudadanos; Fase III; S2013/MIT-2748), funded by the I+D program at Comunidad de Madrid and cofunded by Fondos Estructurales of European Union and by the project Proteccion Robotizada de Infraestructuras Críticas, DPI2014- 56985-R, by Ministerio de Economía y Competitividad of Spain.Peer Reviewe