Development of an IoT solution for detergent supervision in industrial washing machines

Dupla diplomação dom a UTFPR - Universidade Tecnológica Federal do ParanáAutomation of industrial activities aim to improve the efficiency of the productive processes while reducing costs and increasing safety. In industrial laundries, the detergent level measurement is a key element for asset management, mainly due to the necessity of maintaining a continuous flow of washing processes. Therefore, this work presents a solution implemented in the industrial laundry reservoirs of Santa Casa da Misericórdia de Bragança, in Portugal, using an Internet of Things (IoT) approach, which integrates a Wi-Fi based measurement system, capable of monitoring and recording the detergent liquid level from reservoirs in real-time. Thereby, a microcontrolled system was developed to perform level measurements using an ultrasonic sensor, in which data is sent to a database and, through a web based platform, the client can remotely access the measurement results. In order to facilitate the physical installation of the developed hardware in the existent setup, a custom-made enclosure was designed and 3D printed.A automação das atividades industriais tem como objetivo melhorar a eficiência de processos produtivos, reduzindo custos e aumentando a segurança. Em lavanderias industriais, a medição de nível de detergente líquido é um elemento fundamental para o gerenciamento de ativos, principalmente devido à necessidade de manter um fluxo contínuo dos processos de lavagem. Dessa forma, o trabalho apresenta uma solução implementada nos reservatórios da lavanderia industrial da Santa Casa da Misericórdia de Bragança, em Portugal, usando uma abordagem de internet das coisas, na qual integra um sistema de medição com conexão Wi-Fi, capaz de monitorar e registrar o nível de detergente líquido dos reservatórios em tempo real. Com isso, foi desenvolvido um sistema microcontrolado responsável por realizar as medições de nível ulilizando sensor ultrasônico, na qual os dados são enviados para um banco de dados e, através de uma plataforma web, o cliente consiga acessar de forma remota o resultado das medições. Para facilitar a instalação do sistema nos reservatórios, um bujão foi desenhado sob medida e impresso em 3D

Reconhecimento e percepção para a Maternidade e Paternidade

En el artículo se describe la percepción que tienen las mujeres embarazadas de los cuidados que prestan las enfermeras durante el curso que sirve para preparar a determinadas personas para el proceso de Maternidad y Paternidad y, según las categorías presentadas en el estudio, se deben considerar tres aspectos fundamentales: la supervisión, el reconocimiento y la enseñanza en materia de cuidados. Las personas que participan en el curso de preparación para el reconocimiento de la Maternidad y la Paternidad entienden los cuidados prestados por las Enfermeras, reconociéndolos como un aspecto fundamental, mediante la ejecución de acciones encaminadas al bienestar del embarazo, del niño y de la famili

The mass loss process in dwarf galaxies from 3D hydrodynamical simulations: the role of dark matter and starbursts

Theoretical $\Lambda$CDM cosmological models predict a much larger number of low mass dark matter haloes than has been observed in the Local Group of galaxies. One possible explanation is the increased difficulty of detecting these haloes if most of the visible matter is lost at early evolutionary phases through galactic winds. In this work we study the current models of triggering galactic winds in dwarf spheroidal galaxies (dSph) from supernovae, and study, based on 3D hydrodynamic numerical simulations, the correlation of the mass loss rates and important physical parameters as the dark matter halo mass and its radial profile, and the star formation rate. We find that the existence of winds is ubiquitous, independent on the gravitational potential. Our simulations revealed that the Rayleigh-Taylor Instability (RTI) may play a major role on pushing matter out of these systems, even for very massive haloes. The instability is responsible for 5 - 40% of the mass loss during the early evolution of the galaxy, being less relevant at $t > 200$Myrs. There is no significant difference in the mass loss rates obtained for the different dark matter profiles studied (NFW and logarithmic). We have also found a correlation between the mass loss rate and both the halo mass and the rate of supernovae, as already reported in previous works. Besides, the epoch in which most of the baryon galactic matter is removed from the galaxy varies depending on the SN rate and gravitational potential. The later, combined to the importance of the RTI in each model, may change our understanding about the chemical evolution of dwarf galaxies, as well as in the heavy element contamination of the intergalactic medium at high redshifts.Comment: MNRAS, accepte

Intumescente fire protection of cellular beams

Cellular beams are structural steel beams that are deeper than normal rolled sections and have holes cut into their webs. As the web post failure may occur before the section reaches the limiting temperature usually an increase in the fire protection may be required for members with web openings in comparison to its equivalent solid section. The aim of this work is to present an experimental study of unloaded solid and cellular beams with circular holes in fire conditions with and without intumescent fire protection. These preliminary tests are the basis for generating an elemental multi-temperature analysis (EMTA) needed to assess cellular beams with intumescent protection as prescribed by the prEN13381- 9

Conversational Search with Random Walks over Entity Graphs

Funding Information: This work has been partially funded by the FCT project NOVA LINCS Ref. UIDP/04516/2020, by the Amazon Science - TaskBot Prize Challenge and the CMU|Portugal projects iFetch (LISBOA-01-0247-FEDER-045920) and GoLocal (CMUP-ERI/TIC/0046/2014), and by the FCT Ph.D. scholarship grant SFRH/BD/140924/2018. Any opinions, findings, and conclusions in this paper are the authors’ and do not necessarily reflect those of the sponsors. Publisher Copyright: © 2023 Owner/Author.The entities that emerge during a conversation can be used to model topics, but not all entities are equally useful for this task. Modeling the conversation with entity graphs and predicting each entity's centrality in the conversation provides additional information that improves the retrieval of answer passages for the current question. Experiments show that using random walks to estimate entity centrality on conversation entity graphs improves top precision answer passage ranking over competitive transformer-based baselines.publishersversionpublishe

Bio-Inspired Modality Fusion for Active Speaker Detection

Human beings have developed fantastic abilities to integrate information from various sensory sources exploring their inherent complementarity. Perceptual capabilities are therefore heightened enabling, for instance, the well known "cocktail party" and McGurk effects, i.e. speech disambiguation from a panoply of sound signals. This fusion ability is also key in refining the perception of sound source location, as in distinguishing whose voice is being heard in a group conversation. Furthermore, Neuroscience has successfully identified the superior colliculus region in the brain as the one responsible for this modality fusion, with a handful of biological models having been proposed to approach its underlying neurophysiological process. Deriving inspiration from one of these models, this paper presents a methodology for effectively fusing correlated auditory and visual information for active speaker detection. Such an ability can have a wide range of applications, from teleconferencing systems to social robotics. The detection approach initially routes auditory and visual information through two specialized neural network structures. The resulting embeddings are fused via a novel layer based on the superior colliculus, whose topological structure emulates spatial neuron cross-mapping of unimodal perceptual fields. The validation process employed two publicly available datasets, with achieved results confirming and greatly surpassing initial expectations.Comment: Submitted to IEEE RA-L with IROS option, 202

Entre experiencia y estructura : sufrimiento social, identidades colectivas y justicia en Iris Marion Young

This paper analyzes the role of phenomenology in Iris Marion Young's model of critical theory through a discussion of the different strategies she mobilizes in articulating the notions of identity and social collectivities in Justice and the Politics of Difference (1990) and Inclusion and Democracy (2000). By reconstructing the debate Young had with Nancy Fraser during the 1990s, we seek to demonstrate that, although Fraser mischaracterizes Justice and Politics of Difference as representative of the “cultural turn” in social theory, her criticisms can illuminate some of the tensions and shortcomings of the text. Moreover, we argue that the emphasis in a structural-analytical strategy of argumentation, characteristic of Young's later work, can be traced back to the contentions formulated by Fraser. Nonetheless, it is sustained in a final step that Young never completely abdicated the phenomenological approach as a tool for social criticism. Although the argument of Inclusion and Democracy is developed primarily in a structural way, Young repeatedly mobilizes the experiences of social suffering and the demands for justice voiced by social movements as the basis of her large scale democratic proposals.Este artículo analiza el papel de la fenomenología en el modelo de la teoría crítica de Iris Marion Young a través de una discusión de las diferentes estrategias que utiliza para articular las nociones de identidad y colectividades sociales en La justicia y la política de la diferencia (1990) y en Inclusion and Democracy (2000). Al reconstruir el debate que Young tuvo con Nancy Fraser durante la década de los 90, buscamos demostrar que, aunque Fraser malinterpreta La justicia y la política de la diferencia como representante del “giro cultural” en la teoría social, sus críticas pueden iluminar algunas de las tensiones y defectos del texto. Además, sostenemos que el énfasis en una estrategia estructural-analítica de la argumentación, característica del trabajo posterior de Young, puede rastrearse hasta los argumentos formulados por Fraser. Sin embargo, se sostiene en un paso final que Young nunca abdicó completamente del enfoque fenomenológico como herramienta para la crítica social. Aunque el argumento de Inclusion and Democracy es desarrollado principalmente de manera estructural, Young utiliza repetidamente las experiencias de sufrimiento social y las demandas de justicia expresadas por movimientos sociales como base de sus propuestas democráticas a gran escala