RCIPL

Institutional Repository of the Lisbon Polytechnic

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The aim of this Scientific Repository is to disseminate the scientific production produced by the Instituto Politécnico de Lisboa academic community, to increase the visibility and the investigation impact, to ensure the storage of the intellectual memory and to promote the open access to the information.

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Recent Submissions

A articulação entre a técnica de dança clássica e o repertório clássico tendo o port de bras como elemento comum e potenciador técnico e artístico com o 5º ano B da Escola Artística de Dança do Conservatório Nacional

Publication . Silva, Érica; Nascimento, Vanda

O presente documento é o relato fiel do Estágio do Mestrado em Ensino de Dança, implementado nas aulas de Técnica de Dança Clássica e Repertório Clássico, da turma de raparigas do 5º/9º B da Escola Artística de Dança do Conservatório Nacional, durante o ano letivo de 2024/25. O Estágio tinha como objetivos gerais potenciar o progresso técnico das alunas, através da aplicação de diferentes qualidades de movimento do port de bras e da sua coordenação com os membros inferiores e potenciar o progresso artístico, através da associação da qualidade do port de bras a repertório específico, tendo como referência o método Vaganova. A praxis desenvolveu-se tendo por base as premissas da investigação-ação e foi devidamente documentada através de diários de bordo, grelhas de observação, captação de imagens e realização de inquéritos. Após a análise dos dados recolhidos, concluímos que fomos eficazes na concretização daquilo a que nos propusemos, alinhando a nossa prática pedagógica ao trabalho desenvolvido pelas professoras titulares de Técnica de Dança Clássica e Repertório Clássico e viabilizando, dessa forma, o progresso técnico e refinamento artístico das alunas.

2025-09-10Master thesis

Open access

A didática das ciências sociais na formação inicial de professores inicial

Publication . Blanche, Joan Pagès

O autor apresenta algumas considerações sobre as origens da Didática das Ciências Sociais, destacando as relações que identifica entre os problemas da prática de ensinar e a criação e institucionalização da DCS como área de conhecimento universitário. Apresentam-se algumas das mudanças que se registaram na conceptualização da DCS, assim como as finalidades do seu currículo na formação de professores.

2025Book part

Open access

Fractal Laplace transform: analyzing fractal curves

Publication . Khalili Golmankhaneh, Alireza; Welch, Kerri; Serpa, Cristina; Rodríguez-Lopez, Rosana

The concept of Laplace transform has been extended to fractal curves, enabling the solution of fractal differential equations with constant coefficients. This extension, known as the fractal Laplace transform, is particularly useful for handling inhomogeneous differential equations that involve delta Dirac functions and step functions within the realm of fractal functions. A comprehensive table of essential formulas for the fractal Laplace transform has been compiled to facilitate its application in various scenarios. By utilizing this transformative approach, researchers can now delve into the study of fractal functions and address complex problems involving non-traditional geometries. To illustrate the practicality of the fractal Laplace transform, several examples are provided, showcasing its effectiveness in solving fractal differential equations. This advancement represents a significant augmentation of the classical Laplace transform, tailored to suit the distinctive characteristics of fractal systems and functions.

2023-10-27Research article

Open access

Volcano tsunamis and their effects on moored vessel safety: the 2022 Tonga event

Publication . Padilla, Sergio; Aniel-Quiroga, Iñigo; Omira, Rachid; González, Mauricio; Kim, Jihwan; Baptista, Maria Ana

The explosion of the Hunga Tonga-Hunga Ha'apai volcano on 15 January 2022 (Tonga 2022) was the origin of a volcano-meteorological tsunami (VMT) recorded worldwide. At a distance exceeding 10 000 km from the volcano and 15 h after its eruption, the moorings of a ship in the port of La Pampilla, Callao (Peru), failed, releasing over 11 000 barrels of crude oil.This study delves into the profound implications of the Tonga 2022 event, investigating whether it could have led to the breaking of the mooring system. We conducted a comprehensive analysis of this significant event, examining the frequency content of the time series recorded at tide gauges, DART (Deep-ocean Assessment and Reporting of Tsunamis) buoys, and barometers in the southern Pacific Ocean. Our findings revealed that the maximum energy of the spectra corresponds to the 120 min wave period off the coast of Peru, with the arrival time of these waves coinciding with the time of the accident in the port.We used a Boussinesq model to simulate the propagation of the volcano-meteorological tsunami from the source to the port in Peru to study the impact of those waves on the mooring system. We used the synthetic tsunami recorded in the port as input for the model that simulates mooring line loads based on the ship's degrees of freedom. The results suggest that the 120 min wave triggered by the VMT could significantly increase mooring stresses due to the resulting hydrodynamic effects, exceeding the minimum breaking load (MBL).We conclude that the propagation of the long wave period generated by the VMT caused overstresses in moored lines that triggered accidents in port environments. This event showed the need to prepare tsunami early warning systems and port authorities for detecting and managing VMTs induced by atmospheric acoustic waves. The work provides new insights into the far-reaching impacts of the Tonga 2022 tsunami.

2024-09-16Research article

Open access

Thermo-mechanical characterization of metal-polymer friction stir composite joints-a full factorial design of experiments

Publication . Correia, Arménio N.; Gaspar, Beatriz M.; Cipriano, Goncalo; Braga, Daniel F. O.; Miguel Gomes Simões Baptista, Ricardo; Infante, Virginia

With the increasing demand for lighter, more environmentally friendly, and affordable solutions in the mobility sector, designers and engineers are actively promoting the use of innovative integral dissimilar structures. In this field, friction stir-based technologies offer unique advantages compared with conventional joining technologies, such as mechanical fastening and adhesive bonding, which recently demonstrated promising results. In this study, an aluminum alloy and a glass fiber-reinforced polymer were friction stir joined in an overlap configuration. To assess the main effects, interactions, and influence of processing parameters on the mechanical strength and processing temperature of the fabricated joints, a full factorial design study with three factors and two levels was carried out. The design of experiments resulted in statistical models with excellent fit to the experimental data, enabling a thorough understanding of the influence of rotational speed, travel speed, and tool tilt angle on dissimilar metal-to-polymer friction stir composite joints. The mechanical strength of the composite joints ranged from 1708.1 ± 45.5 N to 3414.2 ± 317.1, while the processing temperature was between 203.6 ± 10.7 °C and 251.5 ± 9.7.

2024-02-22Research article

Open access