2025
Authors
Costa, P; Rodrigues, R; Almeida, J; Carrillo Galvez, A; Soares, T; Mourão, Z;
Publication
2025 9th International Conference on Environment Friendly Energies and Applications, EFEA 2025 - Conference Proceedings
Abstract
Onshore power supply (OPS) is a key enabler for decarbonizing port operations and meeting upcoming regulatory targets such as the EU AFIR Regulation 2023/1805 and Portugal's PNEC 2030. This paper presents a simulation-based framework for estimating the OPS demand of container ships at berth, integrating ship hoteling loads, reefer thermal dynamics with flexible control, and OPS/auxiliary engine (AE) dispatch under port grid constraints. A case study at Terminal XXI of the Port of Sines demonstrates the approach using high-resolution (1-minute) simulations. Results show that reefer flexibility enables peak shaving, OPS demand can be enforced within available grid capacity without violating thermal limits, and AE provides reliable backup. Complementary machine learning modules based on Gradient Boosting, Random Forest, and XGBoost enable accurate imputation of missing ship descriptors and OPS demand forecasting (R2 > 0.95). The framework provides an AI-ready decision-support tool for OPS infrastructure planning and port energy management. © 2025 IEEE.
2025
Authors
Peçaibes, V; Cardoso, P; Giesteira, B; Castro, L; Lima, L;
Publication
INTERACTION DESIGN AND ARCHITECTURES
Abstract
Digital media can contribute to emergence of eating disorders by reinforcing idealised body standards, generating dissatisfaction with body image and encouraging conditions such as anorexia nervosa. Excessive use of the internet intensifies self-control difficulties, such as impulsivity, hyperactivity and behavioural problems, aggravating the situation. In this context, games can act as effective tools for prevention and treatment, stimulating self-knowledge, communication, behavioural change, and understanding of the disease. In anorexia, wellbeing is impaired by the demands of the disorder, which affects various life's dimensions. This article presents the co-design process to the creation and playtesting of a board game called Yama's Liberation, developed with patients and health professionals. The game was useful in promoting self-control, empathy, collective reflection, and flexibility of thought, contributing to mental, social, and digital wellbeing. While the game does not directly address the pathology itself, it has the potential to encourage adoption of positive behaviours among players.
2025
Authors
Jain, M; Fernandes, V; Madeira, A; Barbosa, LS;
Publication
Programming
Abstract
2025
Authors
Patatas, B; Duarte, C; Pereira, LS;
Publication
Anais Estendidos do XXIV Simpósio Brasileiro sobre Fatores Humanos em Sistemas Computacionais (IHC 2025)
Abstract
2025
Authors
Vieira, FMP; Woods, J; Dias, D; Cunha, JPS;
Publication
2025 47TH ANNUAL INTERNATIONAL CONFERENCE OF THE IEEE ENGINEERING IN MEDICINE AND BIOLOGY SOCIETY (EMBC)
Abstract
Recent advances in embedded systems, wireless communication, and IoT technologies have driven the development of Wearable Health Devices (WHDs), enabling continuous monitoring of biosignals with low power consumption and high data transmission rates. Among various wireless communication protocols, Bluetooth Low Energy (BLE) stands out due to its energy efficiency and high transmission rate, making it the preferred choice for developing compact and high-performance wearables. However, achieving precise time synchronization across multiple BLE-enabled devices remains a challenge, particularly in distributed systems where sensor nodes operate independently. In this work, we present the WeSync(BLE) our reference synchronization architecture developed for multiple wearable BLE-based biomedical devices intended to streamline the use of numerous wearable devices and synchronize the data acquired across them. A proof-of-concept of this reference synchronization architecture was made using proprietary BLE wearables (used for acquiring motion data). This demonstrated effective synchronization with minimal implementation and latency, achieving an absolute mean and standard deviation of 9.2 +/- 6.7 milliseconds, at 1 hour of testing. This work paves the way for a more robust real-time wearable systems synchronization, advancing the analysis and study of biosignals.
2025
Authors
D'Urbano, A; de Oliveira, M; Barbosa, LS;
Publication
QUANTUM INFORMATION PROCESSING
Abstract
Discerning between quantum and classical correlations is of great importance. Bell polytopes are well established as a fundamental tool for such a purpose. In this paper, we extend this line of inquiry by applying resource theory within the context of network scenarios, to a Quantum Key Distribution (QKD) protocol, BBM92. To achieve this, we consider the causal structure P3 to describe the protocol, and we aim to develop useful statistical tests to assess it. Our objectives are twofold: firstly, to utilise the underlying causal structure of the QKD protocol to produce a geometrical analysis of the resulting nonconvex polytope, with a focus on the classical behaviours, and secondly to devise a test within this framework to evaluate the distance between any two behaviours within the generated polytope. This approach offers a unique perspective, linking deviations from expected behaviour directly to the quality of the quantum resource involved or the residual nonclassicality in protocol execution.
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