Loading...
227 results
Search Results
Now showing 1 - 10 of 227
- IV International Conference on Optimization, Learning Algorithms and Applications: Book of AbstractsPublication . Pereira, Ana I.; Fernandes, Florbela P.; Coelho, João Paulo; Teixeira, João Paulo; Lima, José; Oneto, Luca; Pacheco, Maria F.; Lopes, Rui PedroWelcome to OL2A 2025 - International Conference on Optimization, Learning Algorithms and Applications. OL2A offers a forum for the research community on optimization and learning to get together and share the latest developments and techniques, as well as to develop new paths and collaborations. OL2A provides a broad scope of presentations, covering many areas of optimization and learning and state-of the-art applications to multi-objective optimization, optimization for machine learning, machine learning for optimization, optimization and learning under uncertainty and the fourth industrial revolution. It is with great pleasure that the Organizing Committee welcomes you all to OL2A 2025!
- Soil Organic Carbon Assessment Using Remote-Sensing Data and Machine Learning: A Systematic Literature ReviewPublication . Lima, Arthur A. J.; Lopes, Júlio Castro; Lopes, Rui Pedro; Figueiredo, Tomás d'Aquino; Vidal-Vásquez, Eva; Hernandez Hernandez, ZulimarIn the current global change scenario, valuable tools for improving soils and increasing both agricultural productivity and food security, together with effective actions to mitigate the impacts of ongoing climate change trends, are priority issues. Soil Organic Carbon (SOC) acts on these two topics, as C is a core element of soil organic matter, an essential driver of soil fertility, and becomes problematic when disposed of in the atmosphere in its gaseous form. Laboratory methods to measure SOC are expensive and time-consuming. This Systematic Literature Review (SLR) aims to identify techniques and alternative ways to estimate SOC using Remote-Sensing (RS) spectral data and computer tools to process this database. This SLR was conducted using Systematic Review and MetaAnalysis (PRISMA) methodology, highlighting the use of Deep Learning (DL), traditional neural networks, and other machine-learning models, and the input data were used to estimate SOC. The SLR concludes that Sentinel satellites, particularly Sentinel-2, were frequently used. Despite limited datasets, DL models demonstrated robust performance as assessed by R2 and RMSE. Key input data, such as vegetation indices (e.g., NDVI, SAVI, EVI) and digital elevation models, were consistently correlated with SOC predictions. These findings underscore the potential of combining RS and advanced artificial-intelligence techniques for efficient and scalable SOC monitoring.
- Optimization, Learning Algorithms and Applications (OL2A 2024) Part IPublication . Pereira, Ana I.; Fernandes, Florbela P.; Coelho, João Paulo; Teixeira, João Paulo; Lima, José; Pacheco, Maria F.; Lopes, Rui Pedro; Álvarez, Santiago T.This volume, CCIS 2280, contains the refereed proceedings of the 4th International Conference on Optimization, Learning Algorithms and Applications (OL2A 2024), a hybrid event held on July 24–26. OL2A provided a space for the research community on optimization and learning to get together and share the latest developments, trends and techniques as well as develop new paths and collaborations. OL2A had the participation of more than three hundred participants in an online and face-to-face environment throughout three days, discussing topics associated with areas such as optimization and learning and state-ofthe- art applications related to multi-objective optimization, optimization for machine learning, robotics, health informatics, data analysis, optimization and learning under uncertainty, and the 4th industrial revolution. Three special sessions were organized on the topics Learning Algorithms in Engineering Education, Optimization in the SDG context, and Optimization in Control Systems Design. The event accepted 41 papers. All papers were carefully reviewed and selected from 105 submissions. All the reviews were carefully carried out by a scientific committee of 115 researchers from twenty-six countries.
- Optimization, Learning Algorithms and Applications (OL2A 2024) Part IIPublication . Pereira, Ana I.; Coelho, João Paulo; Teixeira, João Paulo; Lima, José; Pacheco, Maria F.; Lopes, Rui Pedro; Álvarez, Santiago T.; Fernandes, Florbela P.This volume, CCIS 2280, contains the refereed proceedings of the 4th International Conference on Optimization, Learning Algorithms and Applications (OL2A 2024), a hybrid event held on July 24–26. OL2A provided a space for the research community on optimization and learning to get together and share the latest developments, trends and techniques as well as develop new paths and collaborations. OL2A had the participation of more than three hundred participants in an online and face-to-face environment throughout three days, discussing topics associated with areas such as optimization and learning and state-of-the- art applications related to multi-objective optimization, optimization for machine learning, robotics, health informatics, data analysis, optimization and learning under uncertainty, and the 4th industrial revolution. Three special sessions were organized on the topics Learning Algorithms in Engineering Education, Optimization in the SDG context, and Optimization in Control Systems Design. The event accepted 41 papers. All papers were carefully reviewed and selected from 105 submissions. All the reviews were carefully carried out by a scientific committee of 115 researchers from twenty-six countries.
- Optimization, learning algorithms and applications: first International Conference, OL2A 2021Publication . Pereira, Ana I. (Ed.); Fernandes, Florbela P. (Ed.); Coelho, João Paulo (Ed.); Teixeira, João Paulo (Ed.); Pacheco, Maria F. (Ed.); Alves, Paulo (Ed.); Lopes, Rui Pedro (Ed.)The volume CCIS 1488 contains the refereed proceedings of the International Conference on Optimization, Learning Algorithms and Applications (OL2A 2021), an event that, due to the COVID-19 pandemic, was held online. OL2A 2021 provided a space for the research community on optimization and learning to get together and share the latest developments, trends, and techniques as well as develop new paths and collaborations. OL2A 2021 had more than 400 participants in an online environment throughout the three days of the conference (July 19–21, 2021), discussing topics associated to areas such as optimization and learning and state-of-the-art applications related to multi-objective optimization, optimization for machine learning, robotics, health informatics, data analysis, optimization and learning under uncertainty, and the Fourth Industrial Revolution. Four special sessions were organized under the following topics: Trends in Engineering Education, Optimization in Control Systems Design, Data Visualization and Virtual Reality, and Measurements with the Internet of Things. The event had 52 accepted papers, among which 39 were full papers. All papers were carefully reviewed and selected from 134 submissions. All the reviews were carefully carried out by a Scientific Committee of 61 PhD researchers from 18 countries.
- Preface to 2nd International Conference on Optimization, Learning Algorithms and Applications (OL2A)Publication . Pereira, Ana I.; Andrej, Košir; Fernandes, Florbela P.; Pacheco, Maria F.; Teixeira, João Paulo; Lopes, Rui PedroThis CCIS volume 1754 contains the refereed proceedings of the Second International Conference on Optimization, Learning Algorithms and Applications (OL2A 2022), a hybrid event held during October 24–25, 2022. OL2A 2022 provided a space for the research community on optimization and learning to get together and share the latest developments, trends, and techniques, as well as to develop new paths and collaborations. The conference had more than three hundred participants in an online and face-to-face environment throughout two days, discussing topics associated with optimization and learning, such as state-of-the-art applications related to multi-objective optimization, optimization for machine learning, robotics, health informatics, data analysis, optimization and learning under uncertainty, and Industry 4.0.
- II Encontro Internacional de Formação na Docência (INCTE): livro de resumosPublication . Pires, Manuel Vara; Mesquita, Cristina; Lopes, Rui Pedro; Santos, Graça; Cardoso, Mário; Sousa, João Sérgio Carvalho; Silva, Elisabete Mendes; Teixeira, CarlosO II Encontro Internacional de Formação na Docência apresenta os seguintes objetivos: problematizar, no quadro do processo de Bolonha, as estruturas curriculares da formação de educadores e professores; debater propostas didáticas inovadoras na formação para a docência; refletir sobre as práticas formativas nos diversos contextos; analisar o contributo da formação na dinamização das instituições; aprofundar a comunicação entre os diferentes intervenientes na formação numa perspetiva de educação para o desenvolvimento. O Encontro está estruturado em quatro grandes eixos temáticos: Currículo e formação de educadores e professores (CFEP) Este eixo temático integra as questões do currículo, da inovação curricular e as novas perspetivas curriculares, no âmbito da formação inicial ou continuada de educadores e professores, incluindo a discussão de modelos e processos curriculares de diferente natureza e de trabalhos ou propostas de formação de educadores e professores, nos diversos contextos. Didática e formação de educadores e professores (DFEP) Este eixo temático integra aspetos dos diferentes saberes disciplinares em contexto escolar, abarcando a reflexão sobre os contributos da didática na formação de educadores e professores para uma construção progressiva de formas de compreender e agir conscientemente em situações educativas. Práticas educativas e supervisão pedagógica (PESP) Este eixo temático integra o desenvolvimento de práticas de formação de educadores e professores nas escolas, compreendendo a problematização dos papéis a desempenhar pelos diversos intervenientes, numa perspetiva de trabalho colaborativo e da construção de uma identidade profissional consciente, empenhada e responsável. Formação docente e educação para o desenvolvimento (FDED) Este eixo temático integra aspetos formativos do ensino e da aprendizagem relacionados com a promoção de uma cidadania global responsável, abrangendo a discussão de projetos e práticas educativas potenciadoras de uma educação para o desenvolvimento.
- An architecture for reliable transportation of delicate goodsPublication . Matos, Paulo; Rufino, José; Lopes, Rui PedroAdequate conditions are critical to avoiding damage or degradation of products during transportation, especially in the case of delicate goods like food products, live animals, precision machinery or art items, among others. The damages are not always readily identified: sometimes they are only detected several days or weeks after the merchandise has been delivered. Moreover, it may be hard to assess if the problems resulted from the transport conditions, and it may be even harder to prove it, making it difficult to determine and assign responsibilities. Also, transport is a global business, typically involving different companies and means (truck, train, plane, ship, …). Usually, customers hire the service to a single commercial entity, but the service is performed by several companies, like transporters, stockists and dispatchers. To know whether the transport requirements are fulfilled or not is thus essential to assessing responsibilities and encouraging compliance by all the players in the process. In this paper, the authors propose an architecture that allows certifying, in an exempt manner, the conditions under which the transport of sensitive goods are carried out. In case of compliance, it protects the entities of the transport chain and ensures the customer that the merchandise has not been subject to conditions that may have affected its integrity or quality. If problems are detected, it allows to identify the non‐compliant players and to assign responsibilities. The solution is based on ultra‐low‐power, low‐cost devices (equipped with several sensors, a real‐time clock, and Bluetooth Low Energy services), a mobile application and several cloud services (including a Coordinated Universal Time service)
- As narrativas de aprendizagem nos relatórios finais da PESPublication . Mesquita, Cristina; Rodrigues, Maria José; Ribeiro, Maria do Céu; Lopes, Rui PedroA unidade curricular de Prática de Ensino Supervisionada (PES) do curso de Mestrado em Educação Pré-escolar e Ensino do 1.º Ciclo do Ensino Básico (CEB), organiza-se em duas componentes fundamentais: a realização do estágio profissional nos níveis de educação para os quais habilita e a elaboração de um relatório final. O relatório final de PES é um documento elaborado por cada formando que deverá refletir o seu percurso de formação, a atitude crítica e reflexiva em relação aos desafios bem como os processos e desempenhos do quotidiano profissional experienciado. O documento deve ainda incluir a dimensão investigativa sobre a ação educativa desenvolvida. Neste sentido, o relatório final constitui-se com um instrumento que permite múltiplas análises. O trabalho descrito neste artigo centra-se no estudo de 60 relatórios finais do curso de Mestrado em Educação Pré-Escolar e Ensino do 1.º CEB, realizados entre 2012 e julho de 2015, com o objetivo de analisar o tipo de experiências de ensino-aprendizagem desenvolvidas, as áreas de conteúdos e temas em que se enfocam, a abordagem pedagógica e os níveis de reflexão construídos pelos formandos. Metodologicamente, o estudo enquadra-se numa abordagem quantitativa e qualitativa, tendo como técnicas associadas, devido ao elevado número de relatórios e, consequentemente, à quantidade de texto, o text-mining complementado com a análise de conteúdo para interpretar os processos reflexivos, as abordagens pedagógicas emergentes dos textos e as formas de avaliação utilizados. A interpretação e descrição dos resultados revela que os alunos descrevem e analisam experiências de ensino-aprendizagem nas diferentes áreas de conteúdos, que valorizam estratégias diferenciadas e que os processos reflexivos se centram na descrição e análise das práticas, sem, no entanto, revelar um nível de pensamento crítico aprofundado. Percebe-se a progressiva introdução da investigação sobre as práticas ao longo dos anos em análise. Concluímos, apesar das fragilidades evidenciadas, que o relatório final se constitui como um instrumento fundamental no processo formativo dos alunos, pois possibilita o desenvolvimento de ferramentas de reflexão e de investigação sobre a prática educativa, essenciais para o desenvolvimento profissional dos professores.
- (In)Preparação dos docentes face a novos desafios pedagógicosPublication . Lopes, Rui Pedro; Mesquita, CristinaO ensino superior em Portugal segue uma prática pedagógica conservadora, repetitiva. Cada nova geração de professores herda de seus professores a forma de ensinar, que persiste desde a ancestralidade do ensino superior. Numa perspectiva mecânica e descontextualizada, considera-se que a função do professor é ensinar. De acordo com esta visão simplista, os conhecimentos são colocados à disposição do aluno de forma transmissiva, muitas vezes desacompanhada de enquadramento prático e experimental. Assim, o professor baseia-se em diapositivos e, eventualmente, em exercícios práticos para que o aluno possa, apreender os conceitos, as relações e a prática do conhecimento adquirido. Esta postura acrítica faz com que esta prática perdure, não sendo equacionadas alternativas quer por comodidade, quer por desconhecimento, associado à lacuna de formação pedagógica, em particular, nas áreas técnicas. Este trabalho discute a perceção das dificuldades e limitações dos docentes relacionadas com a construção de uma prática pedagógica não convencional, que recorre a conceitos de jogos para incrementar a motivação dos alunos. Esta surge na unidade curricular de Gestão de Sistemas e de Redes do curso de Engenharia Informática do Instituto Politécnico de Bragança e procura substituir o sistema de avaliação tradicional por uma mecânica de níveis e pontuação associada. Adicionalmente, também inclui jogos educativos (role-playing games, jogos de cartas, jogos de tabuleiro) nas experiências de aprendizagem, dando a possibilidade de os alunos optarem pelo caminho mais adequado à sua própria forma de aprender.