2026
Autores
Farahi, F; Santos, JL;
Publicação
IEEE Sensors Reviews
Abstract
2026
Autores
Duraes, MJ; Barbosa, F; D'Inverno, G; Camanho, AS;
Publicação
SOCIO-ECONOMIC PLANNING SCIENCES
Abstract
This paper focuses on the comprehensive assessment of regional performance in attaining the 2030 Strategic Framework for Education and Training (ET2030) established by the European Union. To this end, we propose a composite indicator framework based on robust Benefit-of-the-doubt models empirically validated through an extensive analysis of data spanning 32 countries and 101 NUTS-I level regions for 2019. We integrate contextual variables into a robust conditional model to ensure an equitable evaluation among regions grappling with distinct circumstances. Specifically, the unemployment rate and the percentage of the population holding national citizenship are considered. Moreover, the research identifies best practices from high-performing regions that can serve as benchmarks for underperforming areas. Analyzing regional-level data is crucial for understanding disparities between European regions and within countries.
2026
Autores
Silva, Aline Santos; Plácido da Silva, Hugo; Correia, Miguel; Gonçalves da Costa, Andreia Cristina; Laranjo, Sérgio;
Publicação
Abstract
Our team previously introduced an innovative concept for an "invisible"
Electrocardiography (ECG) system, incorporating electrodes and sensors into a
toilet seat design to enable signal acquisition from the thighs. Building upon
that work, we now present a novel dataset featuring real-world, single-lead
ECG signals captured at the thighs, offering a valuable resource for advancing
research on thigh-based ECG for cardiovascular disease assessment. To our
knowledge, this is the first dataset of its kind.
The tOLIet dataset comprises 149 ECG recordings collected from 86 individuals
(50 females, 36 males) with an average age of 31.73 ± 13.11 years, a mean
weight of 66.89 ± 10.70 kg, and an average height of 166.82 ± 6.07 cm.
Participants were recruited through direct contact with the Principal
Investigator at Centro Hospitalar Universitario de Lisboa Central (CHULC) and
via clinical consultations conducted at the same institution. Each recording
includes four differential signals acquired from electrode pairs embedded in
the toilet seat, with reference signals obtained from a standard 12-lead
hospital ECG system.
2026
Autores
Pinheiro, LV; De Barros, TR; De Oliveira, LW; Oliveira, JG; Soares, TA; Dias, BH;
Publicação
ELECTRIC POWER SYSTEMS RESEARCH
Abstract
The present work proposes a two-stage optimization approach for flexibility services provided by battery energy storage systems (BESS) in distribution networks with photovoltaic (PV) generation and electric vehicles (EV). The considered flexibility services include reserve allocation and voltage regulation to support network operation. The first stage optimizes the day-ahead (DA) scheduling of distributed BESS to minimize overall costs, including energy, BESS usage, and reserve, while accounting for stochastic variations in load, PV generation, and EV penetration. The second stage simulates the real-time (RT) operation of the electrical distribution network, evaluating system behavior under different scenarios based on DA decisions. A coordinated control strategy is applied, integrating DA scheduling with network voltage levels. Deviations between BESS outputs in DA and RT stages are fed back into a new DA run to adjust outputs and reduce costs. Results on a medium-voltage distribution system with 157 nodes (based on a reduced version of the EPRI CKT5 feeder) demonstrate that the proposed scenario-based model provides feasible solutions under uncertainty, with BESS playing a key role while strictly adhering to planned operational modes from DA to RT, as typically enforced in energy market participation.
2026
Autores
Amade, MR; Mamede, HS; Reis, L; Gonçalves, RM; Martins, JLB; Branco, FA;
Publicação
Lecture Notes in Networks and Systems
Abstract
With the advent of Information and Communication Technologies in recent decades, organizations face several challenges today. Adopting Digital Transformation (DT) offers numerous opportunities for Small and Medium Enterprises (SMEs) to improve their efficiency and operations, reaching new markets, shareholders, and customers. However, there are potential risks associated with this process. With Digital Transformation (DT), the radius of connectivity and interconnection between devices and systems increases in Mozambique and worldwide, creating more significant space cyberattacks. As Small and Medium-sized Enterprises (SMEs) connect to the digital world and move forward with adopting innovative digital technologies, they become more vulnerable to digital security risks. Hence, managing digital security risks effectively is crucial to realizing the benefits of Digital Transformation (DT). This position paper proposes to present the research work that will culminate in the proposal to develop a framework that fits Mozambican Small and Medium Enterprises (SMEs) through a Design Science Research (DSR) methodology, which can help to assist Mozambican Small and Medium Enterprises (SMEs) in the Digital Transformation (DT) process. © The Author(s), under exclusive license to Springer Nature Switzerland AG 2026.
2026
Autores
Wu, V; Mendes, A; Abreu, A;
Publicação
SOFTWARE ENGINEERING AND FORMAL METHODS, SEFM 2025
Abstract
Debugging and repairing faults when programs fail to formally verify can be complex and time-consuming. Automated Program Repair (APR) can ease this burden by automatically identifying and fixing faults. However, traditional APR techniques often rely on test suites for validation, but these may not capture all possible scenarios. In contrast, formal specifications provide strong correctness criteria, enabling more effective automated repair. In this paper, we present an APR tool for Dafny, a verification-aware programming language that uses formal specifications - including preconditions, post-conditions, and invariants - as oracles for fault localization and repair. Assuming the correctness of the specifications and focusing on arithmetic bugs, we localize faults through a series of steps, which include using Hoare logic to determine the state of each statement within the program, and applying Large Language Models (LLMs) to synthesize candidate fixes. The models considered are GPT-4o mini, Llama 3, Mistral 7B, and Llemma 7B. We evaluate our approach using DafnyBench, a benchmark of realworld Dafny programs. Our tool achieves 89.7% fault localization success rate and GPT-4o mini yields the highest repair success rate of 74.18%. These results highlight the potential of combining formal reasoning with LLM-based program synthesis for automated program repair.
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