Annual traffic noise levels estimation based on temporal stratification

© 2017. This version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/This paper proposes a temporal sampling strategy that increases the accuracy of long-term noise level estimation and allows to establish the estimation error according to the number of sampled days. Days of the week are stratified into working days and weekend days. This research shows how to use measurements of Leq on working days to estimate the corresponding values for weekend days. This is possible because working days have higher noise levels and less variability than weekend days. The improvement in accuracy allows for a reduction in the number of required sampled days compared to taking samples randomly, which would help to reduce the uncertainty in environmental noise assessment. As a reference, to obtain a 90% confidence interval of ±1 dB for Lday, the proposed sampling strategy reduces the required measurement days by more than 38%. For LDEN, the reduction is close to 18% of the total number of days. The proposed strategy could be adapted to different environments by simply changing a few parameters.Peer ReviewedPostprint (author's final draft

Temporal and spatial stratification for the estimation of nocturnal long-term noise levels

Noise pollution in cities is mainly caused by the vehicular traffic but, depending on the place under assessment, it could be affected by the land use. For noise assessment and strategic noise mapping, the night period equivalent level (), which evaluates sleep disturbance, is one of the requirements of the European Directive 2002/49/EC to be presented for the equivalent time of one year. This research aims to find the influence of the land use in the weekdays stratification to improve the accuracy of the long-term noise level estimation for the night period. It is found that depending on the land use of the place under assessment, the weekdays temporal and spatial stratification could be affected by leisure activities. From a statistical analysis based on a clustering procedure of samples in 19 points, it is observed that both, temporal and spatial stratification depend on the intensity of the surrounding leisure activity, and not on traffic. Following these stratification criteria, a sampling method is presented that reduces by 47% the number of days needed to estimate the annual levels with respect to random samplingPostprint (author's final draft

BEC-BCS crossover in a cold and magnetized two color NJL model

The BEC-BCS crossover for a NJL model with diquark interactions is studied in the presence of an external magnetic field. Particular attention is paid to different regularization schemes used in the literature. A thorough comparison of results is performed for the case of a cold and magnetized two-color NJL model. According to our results, the critical chemical potential for the BEC transition exhibits a clear inverse magnetic catalysis effect for magnetic fields in the range $1 \lesssim eB/m_\pi^2 \lesssim 20$. As for the BEC-BCS crossover, the corresponding critical chemical potential is very weakly sensitive to magnetic fields up to $eB \sim 9\ m_\pi^2$, showing a much smaller inverse magnetic catalysis as compared to the BEC transition, and displays a strong magnetic catalysis from this point on.Comment: 15 pages, 8 figures; v2 PRD versio

Plagiarism Detection in Algorithms - a Case Study using Algorithmi

Learning to program is crucial in computer science degree programmes. For students to gain this skill, they need to practise a lot, since programming is a difficult and complex process and practice improves it. The courses "Algorithmics" and "Introduction to programming" have therefore become almost insurmountable barriers with high failure rates. To overcome these barriers, researchers have sought to find new ways of teaching. For their part, students have looked for ways to succeed with less effort by repeatedly resorting to plagiarism. The need for classes to be taught remotely due to the pandemic has further aggravated this problem. To fight it, we created the Algorithmi tool and equipped it with a plagiarism detection module. This tool promotes stand-alone study by allowing self-correction of the exercises whilst validating authorship. This paper presents a case study on the application of the plagiarism module to the exercise resolutions submitted by the students in their personal repository. Through the analysis of the results obtained we can conclude that there was a high rate of plagiarism. The current version of the tool needs to be extended with new features, not only to become more accurate, but above all to prevent plagiarism from happening.info:eu-repo/semantics/publishedVersio

The Use of Digital Technologies to Develop Girls' Creativity: Paths and Practices in Greece, Lithuania, Portugal, and Slovenia

The presence (or lack thereof) of women in STEM and ICT has become a key issue for the industry and for policy makers, as complex and nuanced questions of gender are brought to the centerstage of public discussion. As part of this effort, this research aims to shine a light on the factors that keep girls and young women from pursuing careers in the field of ICT and provide tools and orientations to tackle these issues. A two-fold analysis was conducted, with interviews with experts in the sector, in the format of four round-table discussions, and an analysis of 30 case studies of projects/initiatives across four countries: Lithuania, Greece, Slovenia and Portugal. The collected insights point to the persistence of gendered stereotypes, as well as prevailing misconceptions on the nature of ICT work. Furthermore, it points to the importance of teachers and educators, as well as the visibility of female role models in the industry. The investment in concrete and creative pursuits in ICT also appears as a defining factor to spark the interest of girls in the field.info:eu-repo/semantics/publishedVersio

Oral health goes to school

Abstract in proceedings of the Fourth International Congress of CiiEM: Health, Well-Being and Ageing in the 21st Century, held at Egas Moniz’ University Campus in Monte de Caparica, Almada, from 3–5 June 2019.This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.info:eu-repo/semantics/publishedVersio

A produção de texto na Era Enem: subjetividade e autoria no contexto político-pedagógico brasileiro contemporâneo

RESUMO Este trabalho traz resultados obtidos em pesquisa em nível de mestrado a respeito do lugar da subjetividade e da autoria na produção de textos no contexto da prova de redação do Enem, debatendo, concomitantemente, as perspectivas institucionais a respeito da linguagem e da produção de textos na contemporaneidade. Para tal, a pesquisa conta com uma análise documental da Base Nacional Comum Curricular (doravante BNCC), especificamente no que diz respeito à visão institucional sobre a linguagem no Ensino Médio e suas perspectivas curriculares para com essa esfera. Em diálogo com essa análise, o trabalho também conta com um estudo acerca da subjetividade e autoria em redações que obtiveram nota 1000 no Exame Nacional do Ensino Médio (Enem), a fim de se averiguar que autores são, de fato, vistos como modelos para o Enem, que é uma realidade do Ensino Médio brasileiro, e se esse panorama é passível de problematização. Ainda, o trabalho traz a proposta de colocar as proposições da BNCC em diálogo com os resultados obtidos do estudo das redações nota 1000, com vistas a discutir de que formas a prática textual tem se dado na contemporaneidade. Dessa forma, o trabalho guia-se pelos estudos em políticas linguísticas (RIBEIRO DA SILVA, 2013; AFONSO, 1998), que muito contribuem para a análise da BNCC; e pelas perspectivas de autoria de Bakhtin (1992 [2011]), Barthes (1984) e Foucault (1969), e de identidade, de Hall (1998), para a análise das redações nota 1000. Além disso, o trabalho é constantemente atravessado por vozes de demais autores que se engajam nas discussões em Linguística Aplicada (STREET, 1984; KLEIMAN, 2007; ROJO, 2009; VIDON, 2016; MENDES, 2013; et ali). Este estudo tem metodologia qualitativa, de base indiciária (GINZBURG, 1986), em que os resultados são observados em plano dialógico como componentes que instiguem constantemente novas problematizações. PALAVRAS-CHAVE: Enem. BNCC. Produção de Textos. Subjetividade. Autoria