Thermal Measurements based on Image Processing for In-Situ Monitoring of 3D Fused Filament Fabrication (FFF).

Nowadays new applications based on the 3D printing technique demand increasingly strict product quality requirements. The in-situ monitoring of variables associated with the manufacturing process through the application of different techniques could help to evaluate the process and ultimately to ensure product quality. In this regard, the acquisition and evaluation of variables and indexes derived from thermographic analysis during the process are key for an early defect detection and can contribute to quality estimation. In this work, a new methodology is proposed for the monitoring and analysis of the additive manufacturing process based on the processing of thermographic images from an LWIR (Long Wave Infrared) camera. The methodology and the suitability of the variables and indexes extracted during the monitoring of the manufacturing process are discussed for the case of a 3D fused filament fabrication of polymers.Universidad de Málaga. Campus de Excelencia Internacional Andalucía Tech

Boletín DTCENS de actualidad jurídico laboral nº 2

Este boletín recopila normativa y jurisprudencia comunitaria en materia social, normativa jurídico-laboral estatal publicada en el BOE, así como las principales sentencias del Tribunal Constitucional.No publicad

Hyperlocal Learning Network ‘La Campana-Altamira’: Using low-cost technologies to support maker education during lockdown times

The Covid-19 pandemic worsened access to education and socio-economic development opportunities for marginalized communities around the globe. ‘Hyperlocal Learning Network La Campana-Altamira’ has used low-cost technologies to target this challenge in a city in the Northeast region of Mexico. With the collaboration of academics from Mexico and the United Kingdom, the project in progress has aimed to build hyperlocal and creative learning networks under a socio-constructivist and grounded approach that could empower individuals (children, parents and general community) and nurture makerspace characteristics at home during lockdown. The project established a hyperlocal learning network in La Campana-Altamira with 11 families, using a combination of craft kits and low-cost digital networks to enable making, reflecting, and sharing in the neighbourhood while schools and makerspaces were closed. This paper presents initial findings of the research process and seeks to open a debate on innovative methods and transnational collaboration during pandemics

Building and surroundings: thermal coupling

Energy building performance can be different according to outdoor conditions or urban environment, at the same time that this last assess, buildings are also affected by the building envelope, as obvious consequence of the thermal and Aeraulic coupling existing between the indoor and outdoor conditions in buildings. Thus, in this coupling is fundamental to typify the transmission phenomenon through the building envelope. Doing this, it is possible to estimate transmission heating losses and gains and also the superficial temperatures of the envelope. In order to assess the transient behaviour of the building envelope it is necessary to develop a predictive model, precise enough, to be integrated in a simulating tool. Detailed and multidimensional models, based in numerical methods, like Finite Element Method (FEM), has a high precision, but its complexity imply resources consumption and computational time, too high to be integrated in these kind of tools. On the contrary, simplified methods are good enough because they are simple and fast, with an acceptable precision in almost all the situations. The present work is focused: (a) Firstly, to develop a simplified RC-network model. The aim of the model is to characterize and to implement with precision the behaviour of a wall in a simulating software tool based on urban environment, (b) secondly, to express in form of equivalences, the different indoor and outdoor excitations that can exist in the building envelope, and (c) finally, to calibrate the simplified model through its characteristic parameters. For a homogeneous wall and two types of excitations, it has been obtained the characteristic parameters of the model that represent the better adjustment to the real wall. In a first step, it has been obtained the results of the proposal model and a reference model based on FEM, in terms of wall external surface heat flow. Results of both models have been compared, and the resultant characteristic parameters of the model have been obtained through an optimisation method. Results for the wall and for the excitations under analysis show: (1) Characteristic longitude ec, or capacitive node position, it is determined according to a certain value of Fo equal to 2 for both excitations, this value remains constant in time, (2) useful wall thickness, on the contrary, vary as time function, according to a logarithmic law for both excitations, although this function is different depending on the considered excitation, (3) using a constant excitation, coefficients from the previous logarithmic function depends on the range of the excitation, while these are practically independent of the lineal excitation gradient

Inteligencia artificial en el diagnóstico histopatológico de microorganismos

Introducción: la mayoría de las aplicaciones en patología digital se encuentran relacionadas con la oncológica, aunque se han propuesto algunos modelos recientes que permiten evaluar la utilidad en el diagnóstico histológico de microorganismos. Material y métodos: se realizó la siguiente revisión en la que se incluyeron 10 artículos publicados en inglés, que tienen como eje central el diagnóstico histopatológico de microorganismos y diferentes modelos de inteligencia artificial. Discusión: los diseñados se han probado para el diagnóstico de Helicobacter pylori, Mycobacterium tuberculosis, Aspergillus, Mucorales y microorganismos relacionados con onicomicosis. Conclusiones: se recomienda el uso de la inteligencia artificial en el diagnóstico histopatológico de microorganismos como un campo emergente que refuerza la función del patólogo coordinador de los diferentes modelos, optimizando así su función y mejorando los tiempos de trabajo y los niveles de efectividad

Libertad sindical, representación en la empresa y conflictos colectivos

Esta crónica analiza las sentencias recogidas en los números 7, 8 y 9 de la Revista de Información Laboral

Libertad sindical, representación de los trabajadores y conflictos colectivos

Esta crónica analiza las sentencias recogidas en los números 10 a 12 de 2012 de la revista Información Labora

Quantitative approach to assist neuroblastoma assessment by measuring I-123 mIBG uptake in scintigraphic images

Whole-body 123I-Metaiodobenzylguanidine (mIBG) scintigraphy is used as the primary image modality in neuroblastoma detection. It is the most sensitive and specific method for staging and response evaluation. Validated semi-quantitative scoring methods with low interobserver variability and high reproducibility have shown to be indispensable for the evaluation of response to therapy. However, low resolution, noise and acquisition difficulties, specially in children, make low definition scans. These facts increase observer dependent interpretations that limit assessment and complicate to put a scoring method succesfully into practice. It is essential to have an objective and reliable measure of response to test the activity of therapies. In this paper we propose the use of a quantitative observer-independent measurement of the strength of uptake to be used as an additional tool for assisting the International Society of Paediatric Oncology Europe Neuroblastoma Group (SIOPEN) semi-quantitative scoring method. This is the scoring method recommended by the SIOPEN Nuclear Medicine and Physics Committee, in collaborative work with the Children’s Oncology Group, as the standard one for acquiring and reporting diagnostic paediatric mIBG scans across Europe. Our proposed method is based on the ratio between the amount of specific uptake at tumours and the amount of non-specific uptake at SIOPEN anatomical sectors which has shown to be constant in all the scans of the patients.This work has been supported by "Ayudas para Actividades Preparatorias de Proyectos Coordinados entre Investigadores de la Universitat Politecnica de Valencia e Investigadores del Hospital Universitario y Politecnico La Fe", II Call, 2013, AUTOSCOREMIBG project. The authors are very grateful to the referees for their useful comments.Martínez Díaz, R.; Balaguer Guill, J.; Sánchez Ruiz, LM.; Bello Arques, P.; Castel, V.; Rivas Sanchez, A.; Cañete Nieto, A.... (2015). Quantitative approach to assist neuroblastoma assessment by measuring I-123 mIBG uptake in scintigraphic images. Image Analysis and Stereology. 34(2):135-144. doi:10.5566/ias.1219S13514434