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Assessment of the electronic conductivity of core-shell, Fe-doped LSGM ceramics by impedance spectroscopy
Get PDFThe structure, microstructure and low-temperature electrical properties of core–shell-type mixed conductors based on lanthanum gallate with Fe-doped grain boundaries are analyzed in depth. Electron probe microanalysis revealed that the iron concentration in the grain-boundary regions (shell) is below 1 at.% and their thickness is no more than 1.5 μm. The low-temperature (b400 °C) electronic conductivity is enhanced by up to 2–3 orders of magnitude with respect to the corresponding undoped ceramics, as revealed by the analysis of impedance spectra combined with microstructural information. The electronic transport numbers lie in the range between 0.35 and 0.1 at 275 to 400 °C, decreasing at higher temperatures, where the influence of grain boundaries on the overall transport properties vanishes and the ionic conductivity increases.371C-9F16-EBDE | Eduarda GomesN/
Academic stress and coping: Contributions to the adaptation of the MMC
Get PDFEste estudo enquadra-se na investigação das estratégias de coping utilizadas perante dificuldades associadas ao quotidiano escolar. Utilizando entrevistas a 30 alunos, o estudo (1) identificou as principais situações geradoras de stress, reconhecendo a importância relativa do stress académico na vida dos alunos, e (2) analisou a validade cultural para o contexto português das situações stressantes usadas na escala Multidimensional Measure of Coping (MMC), avaliando as perceções dos alunos quanto ao nível de stress induzido e controlo percebido relativamente a essas situações. Os resultados confirmaram a importância da escola enquanto fonte significativa de stress, e a adequação da MMC ao contexto português.8C1E-AFB9-6BE1 | Maria Teresa Martins GonçalvesN/
The design thinking process in the development of an intelligent microscopic equipment
No full textThis article aims to demonstrate how the application of user-focused methodologies, namely through the concept of Design Thinking, within a multidisciplinary work team, were important tools for the development of the “μSmartScope” project in the field of intelligent microscopy. In particular, this article focuses on the description of the design process, techniques and tools used to obtain information, and how it was reflected in the designed solution. Carrying out this work, according to the Design Thinking methodology, had the obligation to be adapted to the pandemic context, namely through the use of digital means such as interviews and online meetings, without losing the true essence of this methodology. The results obtained were the sum of all detected needs, which are the means to justify conceptual and technical choices for the project, and thus validate the involvement of a methodology based on Human-Centred Design (HCD). This analysis served as a justification for introducing these types of concepts in learning opportunities, in order to develop projects more focused on users in a real context and their involvement within the project itself, resulting in the design of a product capable of promoting a safer, more efficient, and comfortable relationship with the target audience.101E-1BBD-F278 | João Carlos Monteiro Martinsinfo:eu-repo/semantics/publishedVersio
Secure services integration and edge computing for effective beekeeping
Get PDFMany of the issues that require resolution are not easy to mitigate just from the technology perspective. The ancestral learned logic of processes, the people traditions, and many other variants define inner contexts that make the adhesion and efficient use of information technologies a delicate process. The enormous geographical dispersion of the beekeeping economic activity, the mostly amateur profile of beekeepers, and the specificity in the traditional way as the activity is managed, compromises the applicability of integrative measures based on ICTE. Efficient and integrated management of a no-professionalized economic activity depends on two basic principles: i) the existence of effective tools capable of managing that activity and its synergies with other related activities, and ii) an infrastructure (technological, procedural, legal) that supports services properly profiled for any actor in that activity. This paper describes the work-in-process sBee - Smart Beekeeping, an applied research project that sought to integrate emerging technologies on the innovative management of critical issues that beekeeping needs to overcome. Electronic devices, Internet-of-things, advanced management algorithms, and innovative visualization services were explored. The global system architecture, its supporting services, and the communication infrastructure are here described. The integration of both internet-of-things and communications services, with the common beekeeping’s management tasks, levered a proposal for improving this activity to become more effective. Furthermore, an advanced technological supporting platform was created and experimented, prepared for further developments, on mitigating emergent challenges that the digitization promotes, namely the security and traceability on food and related agriculture value-chains, as well as on the predictive and intelligent perception of current and future scenarios.911A-2C18-106F | Carlos Jorge Enes Capitão de AbreuN/
Symbolic approach to the general quadratic polynomial decomposition
No full textIn this work we deal with a symbolic approach to the general quadratic polynomial decomposition. By
means of a symbolic implementation, we investigate some properties of the components sequences like orthogonality and symmetry. We present some explicit results for a collection of well known orthogonal cases.4516-0A1C-E9CD | Teresa Augusta MesquitaN/
Aprender Pré-História e História Antiga no 5º ano de escolaridade : experiências de literacia visual no manual escolar de História e Geografia de Portugal
Get PDFRelatório Final de Prática de Ensino Supervisionada do Mestrado em Ensino do 1º Ciclo do Ensino Básico e de Português e História e Geografia de Portugal no 2º Ciclo do Ensino Básico apresentado na Escola Superior de Educação do Instituto Politécnico de Viana do CasteloO presente relatório desenvolveu-se no âmbito da unidade curricular de Prática de
Ensino Supervisionada, integrada no Mestrado em Ensino do 1º Ciclo do Ensino Básico e
de Português e História e Geografia de Portugal no 2º Ciclo do Ensino Básico.
O estudo empírico foi desenvolvido, numa turma de 5º ano de escolaridade de um
estabelecimento do ensino público no distrito de Viana do Castelo, ao longo de onze
semanas. A investigação intitula-se “Aprender Pré-História e História Antiga no 5º Ano de
Escolaridade: experiências de literacia visual no manual escolar de História e Geografia de
Portual” e integrou a área da História e Geografia de Portugal. Privilegiou-se uma
metodologia de natureza qualitativa e recolheram-se dados através da observação direta
da turma, da realização de um inquérito inicial, das diferentes atividades propostas e de
um inquérito final.
Num primeiro momento, os alunos realizaram um inquérito inicial de modo a
percecionar as suas opiniões em relação à disciplina e ao manual e os conhecimentos em
relação ao património local e cultural. Numa fase seguinte, realizaram um conjunto de
atividades, que permitiram trabalhar diferentes formas de abordar o manual e de apelar à
literacia visual como forma de aquisição de conhecimentos.
No fim, os alunos realizaram um inquérito final, que teve como objetivo conhecer
a evolução dos alunos relativamente ao gosto pela disciplina, enquanto se trabalhavam
conteúdos e se apelava ao uso do manual e das suas fontes iconográficas como forma de
estudo. No que diz respeito à análise de dados, esta assentou na análise de quatro
categorias, nomeadamente, mobilização de conteúdos cumulativos no âmbito da História
e Geografia de Portugal, utilização de vocabulário novo relacionado com HGP, integração
de finalidades didáticas e envolvimento dos alunos nas atividades, que permitiram
analisar a evolução dos alunos relativamente aos conhecimentos cumulativos no âmbito
da HGP e, simultaneamente, no processo de ensino-aprendizagem. Por sua vez, a recolha de dados permitiu concluir que os alunos se mostraram sempre muito motivados quer
para os conteúdos trabalhados quer para as atividades levadas a cabo, aumentando os
seus conhecimentos no âmbito da HGP, mobilizando vocabulário nesta área e
desenvolvendo aprendizagens.
A intervenção realizada provou que é possível trabalhar a HGP de uma forma
dinâmica, apelando à iconografia, à cultura visual e à sua análise como forma de aquisição
de conhecimentos, e de forma articulada com o currículo de português, possibilitando a
exploração motivadora dos conteúdos relacionados com a pré-história, a arqueologia e a
história antiga.This report was developed within the scope of the curricular unit of Supervised
Teaching Practice, integrated in the master’s degree in Teaching the 1st Cycle of Basic
Education and Portuguese and History and Geography of Portugal in the 2nd Cycle of
Basic Education.
The empirical study was carried out in a 5th grade class at a public education
establishment in the district of Viana do Castelo, over eleven weeks. The research is
entitled “Learning Pre-History and Ancient History in the 5th Year of Schooling: visual
literacy experiences in the HGP school manual” and was part of the area of History and
Geography of Portugal. A qualitative methodology was favoured, and data were collected
through direct observation of the class, carrying out an initial survey, the different
proposed activities, and a final survey.
At first, the students carried out an initial survey to perceive their opinions in
relation to the subject and the manual and their knowledge in relation to the local and
cultural heritage. In a next phase, they carried out a set of activities, which made it
possible to work on different ways of approaching the manual and appealing to visual
literacy as a way of acquiring knowledge.
At the end, the students carried out a final survey, which aimed to know the
evolution of the students in relation to the taste for the subject, while working on
contents and appealing to the use of the manual and its iconographic sources as a form of
study. With regard to data analysis, this was based on the analysis of four categories,
namely, mobilization of cumulative contents within the scope of the History and
Geography of Portugal, use of new vocabulary related to HGP, integration of didactic
purposes and student involvement in activities, which made it possible to analyse the
evolution of students in terms of cumulative knowledge within the scope of the HGP and,
simultaneously, in the teaching-learning process. In turn, The intervention carried out proved that it is possible to work the HGP in a
dynamic way, appealing to iconography, visual culture, and its analysis as a way of
acquiring knowledge, and in an articulated way with the Portuguese curriculum, enabling
the motivating exploration of related contents with prehistory, archaeology and ancient
history
Nice payer - a software platform for registering debtors with past due debts
Get PDFPortugal oferece poucas soluções para a partilha de informações privadas de dívidas negativas e as soluções existentes são restritas ou desconhecidas do grande público. Portanto, uma solução ampla, que tenha como objetivo ligar os setores industrial, comercial e de serviços, baseada numa plataforma on-line, com adesão automática e em larga escala, ainda não foi experimentada. Este artigo analisa a necessidade de uma plataforma para reduzir a assimetria de informações entre pessoas e empresas, com intuito de minimizar a seleção adversa no mercado de crédito português. Incentivar que bons pagadores tenham acesso a crédito sem juros ou com taxas mais baixas, garantir que credores tenham condições mínimas para análise de risco e a respetiva cobrança efetiva das dívidas vencidas é o propósito do sistema Nice Payer, aqui proposto. O artigo apresenta um protótipo escalável do sistema
proposto, para gestão de informações negativas e que tem como finalidade dar suporte à existência de um bureau de crédito privado com atuação multinacional.F816-10AE-52D2 | Wenderson Ferreira WanzellerN/
Math trails through digital technology: an experience with pre-service teachers
No full textThis paper describes part of an on-going study that aims to understand the potential of
digital technology in outdoors mathematics from the perspective of pre-service teachers. We followed
a qualitative approach and data was collected through observation, two questionnaires and
photographic records. The study involved forty-eight participants that used Math City Map to do a
math trail in the city centre of Viana do Castelo. Results show that they valued the experience,
highlighting the possibility of solving realistic problems, developing cooperative work, critical thinking
and the establishment of mathematical connections. They found the app to be user friendly and
motivating, mentioning its contribution for students’ engagement through active learning, spatial
orientation, autonomy and being more interactive then the paper version.0D1E-4824-1244 | Ana Cristina Coelho Barbosainfo:eu-repo/semantics/publishedVersio
Acontecimientos de vida y envejecimiento: Una lectura Individual y cualitativa - Parte II
No full textRESUMO O envelhecimento pode ser encarado como processo dinâmico de ganhos e perdas ao longo da vida, atravessado por acontecimentos de vida normativos e não-normativos. O tipo, timing, sequência e
combinação de acontecimentos influencia a qualidade das trajetórias de vida. O presente estudo
pretende aprofundar o conhecimento do processo adaptativo, na sequência de um estudo
comparativo – Projeto AgeNORTC. Foram selecionados 10 casos extremos, situados no percentil 75
em escalas do bem-estar de Ryff. A recolha de dados fez-se com entrevista semiestruturada e a sua
análise seguiu o procedimento de análise de conteúdo proposto por Creswell (2009), assente numa
abordagem indutiva estruturada em cinco fases: preparar os dados, conduzir as análises, perceber
os dados, representar os dados, e interpretar o seu significado. Globalmente, a análise de conteúdo
permitiu identificar: (1) acontecimentos de vida normativos (ex., entrada para a escola) e não
normativos (ex., desemprego); (2) acontecimentos normativos dentro e fora do timing (ex., perda
dos pais na infância); (3) uma cascata de acontecimentos. Estes resultados apontam para a
relevância da plasticidade humana nos processos adaptativos.
ABSTRACT Aging can be understood as a dynamic process with gains and losses throughout life, punctuated by normative and nonnormative life events. The type, timing, sequence, and combination of events influences the quality of life trajectories. The present study aims to understand the adaptive process, in the sequence of a comparative study – AgeNortC Project. The participants are 10 extreme cases that presented scores in the 75 percentile in Ryff’s well-being scales. Data collection was performed
with a semi structured interview and the content analysis followed the data analysis process
proposed by Creswell (2009), based on an inductive approach structured in five steps: preparing
data, conducting analysis, perceiving data, representing the data, and interpret its meaning. Globally,
the content analysis allowed the identification of: (1) normative (ex., school) and nonnormative life
events (ex., unemployment); (2) normative life events within and outside timing (ex., parent’s death
in childhood); (3) a cluster of events. These results point towards the relevance of human plasticity in
adaptive processes.
RESUMEN El envejecimiento puede verse como un proceso dinámico de ganancias y pérdidas a lo largo de la vida, atravesado por eventos normativos y no normativos. El tipo, momento, secuencia y combinación de eventos influyen en la calidad de las trayectorias de vida. El presente estudio tiene la intención de profundizar el conocimiento del proceso de adaptación, siguiendo un estudio comparativo - Proyecto AgeNORTC. Se seleccionaron 10 casos extremos, ubicados en el percentil 75 en las escalas de
bienestar de Ryff. Los datos fueron recolectados con entrevista semiestructurada y su análisis siguió
el procedimiento de análisis de contenido propuesto por Creswell (2009), basado en un enfoque
inductivo estructurado en cinco fases: preparar los datos, realizar el análisis, percibir los datos,
representarlos e interpretar su significado. Globalmente el análisis de contenido permitió identificar:
(1) eventos de vida normativos (por ejemplo, entrada a la escuela ) y no normativos (por ejemplo,
desempleo); (2) eventos de vida normativos dentro y fuera del tiempo (por ejemplo, pérdida de los
padres en la infancia); (3) una cascada de eventos. Estos resultados apuntan a la relevancia de la
plasticidad en los procesos adaptativos.E51F-89A1-B769 | Carla Fariainfo:eu-repo/semantics/publishedVersio
Paper folding for an active learning of mathematics: an experience with preservice teachers
Get PDFABSTRACT: Students are active individuals that build, modify and integrate ideas, interacting
with the physical world, materials and other students. Furthermore, not all students learn in
the same way, some learn better by seeing, others by listening, others by moving. So, we
developed an exploratory study of qualitative nature, with elementary preservice teachers,
where the emphasis was on a teaching approach based on problem solving, mathematical
communication and collaborative work that involved the manipulation of a sheet of paper.
We intended to identify the relevance of this approach with preservice teachers and what
were the main difficulties revealed, related to the proposed tasks. Preliminary results allowed
to identify several difficulties in terms of mathematical communication and the manipulation
of the sheet of paper to solve a problem. However, they reacted positively to the tasks,
expressing interest, motivation and recognition of its importance in mathematical learning at
any level. RESUME: Les étudiants sont des individus actifs, qui construisent, modifient et intègrent des
idées, en interaction avec le monde physique, des matériaux et d’autres étudiants. En outre,
tous n'apprennent pas de la même manière: certains apprennent mieux en regardant, d'autres
en écoutant, d'autres en bougeant. Nous avons donc développé une étude exploratoire de
nature qualitative, avec des futures instituteurs, promouvant une approche pédagogique
basée sur la résolution de problèmes, la communication mathématique et le travail
collaboratif impliquant la manipulation d’une feuille de papier. Nous voulions déterminer la
pertinence de cette approche pour les futures enseignants et identifier les les principales
difficultés révélées face aux tâches proposées. Les résultats préliminaires ont permis
d'identifier plusieurs difficultés relevant de la communication mathématique et de la
manipulation de la feuille de papier pour résoudre un problème. Cependant, les participants
ont réagi positivement aux tâches, exprimant leur intérêt et motivation et reconnaissant leur
importance pour l’apprentissage des mathématiques à tous les niveaux.0D1E-4824-1244 | Ana Cristina Coelho Barbosainfo:eu-repo/semantics/publishedVersio