Browsing by Issue Date, starting with "2024-04-15"
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- Picturebooks enquanto promotores de motivação no ensino-aprendizagem de inglês no 1º ciclo do ensino básicoPublication . Ruivo, Cristina Alexandra Esparteiro; Orega, Maria Isabel MendonçaO presente estudo propõe-se responder à questão inicial: “Como poderão os picturebooks contribuir para o estímulo dos alunos no processo de ensino-aprendizagem de inglês no 1.º Ciclo do Ensino Básico, nomeadamente, na aquisição de conceitos como a empatia e/ou a relação entre si e o mundo (cidadania)?”. A fim de obter respostas mais direcionadas, decidimos criar duas sub questões: “Quais são as opiniões e práticas dos professores, relativamente à Educação para a Cidadania, no 1.ºCEB?” e “Como poderemos criar e desenvolver recursos que garantam que a empatia e a cidadania constituem os objetivos de aprendizagem? “. Fundamentado no conteúdo funcional da questão de investigação, definiram-se os objetivos: compreender o conceito de picturebook, enquanto recurso didático; compreender o papel dos picturebooks como elemento motivador no processo ensino-aprendizagem do inglês no 1.º Ciclo do Ensino Básico; estruturar um plano de ação focado nos conteúdos das Aprendizagens Essenciais de inglês, e na Estratégia Nacional de Educação para a Cidadania (ENEC). Este estudo decorreu entre outubro de 2021 a janeiro de 2022, numa turma do 3.º ano do 1.º Ciclo do Ensino Básico. Após a experiência e observação, efetuadas na PES, julgámos ser possível integrar a Educação para a Cidadania Global, nas aulas, sem qualquer prejuízo nas aprendizagens do currículo. Compreendemos que a integração do álbum ilustrado (picturebook), no contexto curricular da aula, está intimamente ligada à figura do professor mediador e à melhoria da sua capacidade de mediação. Perante a impossibilidade de aplicar o projeto na sua totalidade, surgiu a concretização de brochuras com atividades propostas e adequadas para cada um dos álbuns ilustrados (picturebook) selecionados, que poderão ser utilizados como guião, na docência de inglês, no 1.º Ciclo do Ensino Básico.
- Interpretation of many-valuedness in quality-of-life instrumentsPublication . Ribeiro, Luís Pedro; Eklund, Patrik; Gomes Alves Ferreira, Maria Augusta; Magalhães Ribeiro, Anabela de; Farinha, Maria Conceição; Paiva, Maria Adelaide; Gonçalves, Tânia; de Almeida Fontes, Ana Paula; Pinheiro, JoãoAssessment instruments for functioning in general and quality of life in particular often involve discrete scales with three, four, or five values, or Visual Analogue Scales (VAS) with a range 0–100. VAS scales often need to be downsized and discretized using intervals or clusters. Cutoff points for these intervals/clusters need to be carefully selected and justified. Our objective was to underline the importance of providing clear interpretations of many-valuedness appearing in quality-of-life (QoL) instruments, and to present a methodology for the provision of such clearness. Doing so, we view QoL scales as originating within the World Health Organization (WHO).
- Soundscaping using a smart cable prototype off the coast of PortugalPublication . Duarte, Ricardo; Zabel, F.; Silva, António; Jesus, SergioOcean soundscaping is an important tool to monitor ocean noise and to understand how it may impact marine life. A promising approach is the exploration of the SMART cable concept that relies on the use of a telecommunication cable equipped with environmental sensors, allowing for ocean real-time monitoring. The K2D project(1) developed a set of cable nodes with extended SMART capabilities. These nodes were tested on a short telecommunication cable deployed off the coast of Sesimbra, Portugal. In this sea trial, several ocean variables were gathered, including underwater sound that was used to characterize the region's soundscape. Three types of analysis were conducted: a) the evaluation of the usual noise level baseline for all nodes, b) an attempt of sound source identification through frequency band analysis, and c) the evaluation of the noise level in different periods of the day. The results show that node 1 (the closest to shore) has higher noise levels and no significant difference between day and night periods in the frequency bands between 100 Hz and 1 kHz. No biological signatures were identified in the recorded data. Comparing the three nodes' locations, the results suggest that the area where node 1 was deployed is the most affected by (coastal) ship traffic.
- Ocean noise field-calibration constraints for deep sea miningPublication . de Oliveira Júnior, Luciano; Rodríguez, Orlando; Jesus, SergioThe EU Horizon project TRIDENT aims at developing a comprehensive study to improve the understanding of the activities related to deep sea mining as well as to develop observation methodologies, technologies required for impact forecast, and possible mitigation measures. In the framework of TRIDENT, the impact of the acoustic field will be assessed by deploying a fixed array of acoustic recorders in the surrounding of the mining activity on top of the Tropic Seamount to monitor the near field, while acoustic gliders equipped with hydrophones will provide the observations from the far field. In complement, noise models will be routinely used for predicting sound distribution requiring frequent calibration with field data with a suitable spatial coverage. This work proposes a methodology and tests the calibration capabilities for ocean noise modelling in the context of DSM activities, where the main objective is to define the best sampling strategy for a glider to record data for calibrating acoustic propagation models. The analysis of the broadband transmission loss from contrasting oceanographic conditions allowed the identification of regions of interest assuring the best use of the acoustic glider in the upcoming sea trial.
- Spiral beacon calibration and experiments for underwater localizationPublication . Viegas, Rúben; Zabel, Friedrich; Gomes, João; Silva, AntónioUnderwater localization and navigation are still challenging tasks due to the underwater acoustic channel characteristics. Spiral sources are underwater transducers that create structured acoustic fields from which the angle to the source can be readily obtained. The angle estimation is obtained from the phase difference between transmitted circular and spiral fields, but for reliable operation the transducers must be properly calibrated. This paper presents a spiral source calibration procedure with the integration of a stepper motor to measure phase and amplitude features of the transmitted circular and spiral fields, at multiple bearing angles. The calibration was performed for two developed prototypes, which in turn determined the most appropriate operating frequency range. For one of the prototypes, its linearity was confirmed at all the tested frequency ranges through homogeneity and additivity tests. In addition to calibration, acoustic localization experiments were carried out with the transmission of circular and spiral fields, with a comparative analysis against footage captured from the top of the test pool. The phase difference of the mobile hydrophone was subtracted to the phase difference of the reference hydrophone to compute the angle between the spiral beacon and the mobile hydrophone. The localization results revealed noteworthy angular errors, hypothesized to be associated with the Doppler effect induced by the movement of the mobile hydrophone. These calibration and localization experiments suggest that spiral sources could be an important enabling technology for safe and reliable localization of underwater vehicles.
- Vulnerable marine ecosystems survey pilot missions with EVA Hybrid AUV/ROVPublication . Almeida, Carlos; Martins, Alfredo; Soares, Eduardo; Santos, A. Miguel P.; Matias, Bruno; Silva, Pedro; Pereira, Ricardo; Sytnyk, Denys; Ferreira, António; Lima, Ana Paula; Cunha, Mariana R.; Ramalho, Sofia P.; Rodrigues, Clara F.; Figueiredo, Ivone; Rosa, Marcos; Almeida, JoséFishing for deep-sea species occurs on continental slopes, ridges, and seamounts. Fishing operations using fishing gears that contact the bottom (e.g., trawls and bottom longlines) may have significant impacts on Vulnerable Marine Ecosystems (VMEs). VMEs refer to marine ecosystems with a population or community of sensitive taxa or habitats that are likely to experience substantial alteration from short-term to chronic disturbance and that are unlikely to recover during the timeframe in which the disturbance occurs. The VME concept, introduced in the United Nations General Assembly Resolution 61/105, has been worldwide applied to the management of deep-sea fisheries. However, the effective identification and management of VMEs is highly constrained by the scarcity of data on VME indicator taxa. This data deficiency is usually surpassed by the use of VME predictive modelling. Video footage is a non-destructive method commonly used for exploring and investigating areas of seabed and for characterising and identifying habitat types. Remotely Operated Vehicles (ROVs) are one of the tools for seabed mapping. ROVs range in size from small observation-class to large work-class vehicles. Their sizes determine the payload, manoeuvrability, depth rating and ultimately uses of the vehicle. For epifaunal imaging, ROVs can be used in two modes: qualitative inspections and quantitative assessments. This paper presents the development of an innovative system composed of a compact support research vessel and a hybrid autonomous underwater vehicle capable of accurate georeferenced high-resolution imaging and profiling of the seabed for a detailed survey of the seabed for biodiversity studies. The experimental results obtained by the developed system in field work in real VME survey at 600m depth are presented.
- A Demonstrator for future fiber-optic active SMART repeatersPublication . Cruz, Nuno A.; Silva, António; Zabel, Friedrich; Ferreira, Bruno; Jesus, Sergio; Martins, Marcos S.; Pereira, Eduardo; Matos, Tiago; Viegas, Ruben; Rocha, João; Faria, JoãoThe deep-sea environment still presents many challenges for systematic, comprehensive data acquisition. The current generation of SMART cables incorporates low-power sensors in long-range telecommunication cables to improve knowledge of ocean variables, aid in earthquake and tsunami warnings, and enhance coastal protection. The K2D Project seeks to expand SMART cables' capabilities by increasing the diversity of sensors along deep water cables, integrating active devices, and leveraging mobile platforms like deep-water AUVs, thereby improving spatial coverage and advancing ocean monitoring technology. This paper discusses a demonstration of these capabilities, focusing on the description of the main building blocks developed along the project, with results from a sea deployment in September 2023.