Honofre Manescal y su Miscellánea de tres tratados (1611)

La razón principal que me ha movido a escribir este breve trabajo es el de rescatar del olvido o casi olvido a un predicador catalán, antiguo catedrático y autor de un texto poco conocido y aun menos citado, la Miscellánea de tres tratados. Honofre Manescal, en su obra impresa da sobradas muestras de una gran erudición y de una técnica de escribir que él domina con notable acierto y rigor. Su obra da fe igualmente de que tenía una imagen concreta y trabajada de su labor como productor de textos escritos, fruto todos ellos de una incansable pasión lectora

A VLSI-oriented and power-efficient approach for dynamic texture recognition applied to smoke detection

The recognition of dynamic textures is fundamental in processing image sequences as they are very common in natural scenes. The computation of the optic flow is the most popular method to detect, segment and analyse dynamic textures. For weak dynamic textures, this method is specially adequate. However, for strong dynamic textures, it implies heavy computational load and therefore an important energy consumption. In this paper, we propose a novel approach intented to be implemented by very low-power integrated vision devices. It is based on a simple and flexible computation at the focal plane implemented by power-efficient hardware. The first stages of the processing are dedicated to remove redundant spatial information in order to obtain a simplified representation of the original scene. This simplified representation can be used by subsequent digital processing stages to finally decide about the presence and evolution of a certain dynamic texture in the scene. As an application of the proposed approach, we present the preliminary results of smoke detection for the development of a forest fire detection system based on a wireless vision sensor network.Junta de Andalucía (CICE) 2006-TIC-235

Relación entre cómic y enunciado matemático. Estudio y caso práctico

El creciente fracaso escolar y la imagen antigua de las matemáticas entre los alumnos menos destacados obliga al sistema educativo a reformular el diseño de recursos didácticos. Entendemos que los alumnos de hoy reclaman material visual y desechan los enunciados de texto. Nuestra propuesta pretende unir imagen, texto y método didáctico a través del cómic. El resultado de nuestro trabajo son dos páginas con dos historias que adaptan dos capítulos de la novela El hombre que calculaba, escrita por Malba Tahan, con las que exponemos algunas pautas de lo que, pensamos, debería mostrar un cómic realizado para que lo utilicemos en el aula

Single-Board-Computer Clusters for Cloudlet Computing in Internet of Things

The number of connected sensors and devices is expected to increase to billions in the near future. However, centralised cloud-computing data centres present various challenges to meet the requirements inherent to Internet of Things (IoT) workloads, such as low latency, high throughput and bandwidth constraints. Edge computing is becoming the standard computing paradigm for latency-sensitive real-time IoT workloads, since it addresses the aforementioned limitations related to centralised cloud-computing models. Such a paradigm relies on bringing computation close to the source of data, which presents serious operational challenges for large-scale cloud-computing providers. In this work, we present an architecture composed of low-cost Single-Board-Computer clusters near to data sources, and centralised cloud-computing data centres. The proposed cost-efficient model may be employed as an alternative to fog computing to meet real-time IoT workload requirements while keeping scalability. We include an extensive empirical analysis to assess the suitability of single-board-computer clusters as cost-effective edge-computing micro data centres. Additionally, we compare the proposed architecture with traditional cloudlet and cloud architectures, and evaluate them through extensive simulation. We finally show that acquisition costs can be drastically reduced while keeping performance levels in data-intensive IoT use cases.Ministerio de Economía y Competitividad TIN2017-82113-C2-1-RMinisterio de Economía y Competitividad RTI2018-098062-A-I00European Union’s Horizon 2020 No. 754489Science Foundation Ireland grant 13/RC/209

Structure and dynamics in liquid iron at high pressure and temperature. A first principles study

Producción CientíficaWe have studied the evolution of structural and dynamic properties of liquid Fe as a function of pressure for 11 thermodynamic states close to the melting line. The pressure range considered goes from ambient pressure to 323 GPa, and the study has been carried out by using the ab-initio molecular dynamics technique. The agreement between the calculated static structure and the available experimental data is very good, including details like an asymmetric second peak, which remains over most of the whole pressure range and suggests a significant local icosahedral short-range order in the liquid. The dynamical structure is studied through the characteristics of the propagating density fluctuations and the associated longitudinal and transverse particle currents. The transverse dispersion relations expose two branches of modes for all pressures, whose range of appearance is analyzed and put in connection with the double-peak structure of the Fourier spectra of velocity autocorrelation functions. We have also investigated the existence of fingerprints of transverse acoustic excitation modes in the dynamic structure factor for the high pressure states similar to those observed in the inelastic X-ray scattering intensity data of liquid Fe at ambient pressure. The calculated electronic density of states shows that with increasing pressure there is a widening of the conduction band along with a decreasing significance of spin polarization. Finally, we also report results for transport coefficients like self-diffusion, shear viscosity and adiabatic sound velocity, which are compared with the available experimental data.Ministerio de Economía y Competitividad junto con el Fondo Europeo de Desarrollo Regional (Project PGC2018-093745-B-I00

La forma urbana de la periferia y los conjuntos de vivienda pública [VP]. Madrid 1940 – 2010: de la comparsa al hito en la VP madrileña

Peer Reviewe

Euler, Rey Pastor y la sumabilidad de series

Peer Reviewe

¿Cuál es la influencia de los valores hacia el trabajo en relación con otras variables en el desarrollo del compromiso organizacional?

[EN] Using the four high-order values proposed by the Theory of values of Schwartz to operationalize the construct of work values, we evaluated the influence of these values on the development of organizational commitment, in comparison with four facets of work satisfaction and four organizational factors: empowerment, knowledge of organizational goals, and training and communication practices. A sample of 982 employees from eight companies of Northeastern Mexico was used in this study. Our findings suggest that work values occupy a less important place on the development of organizational commitment when compared to organizational factors, such as the perceived knowledge of the goals of the organization, or some attitudes such as satisfaction with security and opportunities of development.[ES] Empleando los cuatro valores de orden superior propuestos por la teoría de Schwartz para operacionalizar el constructo de valores en el trabajo, esta investigación evalúa cuál es la influencia de éstos en el desarrollo del compromiso organizacional en comparación con cuatro facetas de la satisfacción laboral y cuatro factores organizacionales: empowerment, conocimiento de los objetivos de la organización y, satisfacción con las prácticas de formación y comunicación organizacional. Para validar las hipótesis se utilizó una muestra de 982 empleados de ocho diferentes compañías del noreste de México. Los resultados sugieren que los valores en el trabajo ocupan un lugar menos importante en el desarrollo del compromiso organizacional en comparación con otros factores organizacionales, tales como el conocimiento de los objetivos organizacionales, o bien algunas actitudes, como la satisfacción con la seguridad y las oportunidades de desarrollo