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Publicações

2025

Assisted Vascular Analysis (AVA) for Deep Inferior Epigastric Perforators: Pipeline Analysis

Autores
Ferreira, R; Silva, J; Romariz, M; Pinto, D; Araújo, RJ; Santinha, J; Gouveia, P; Oliveira, HP;

Publicação
2025 IEEE 25th International Conference on Bioinformatics and Bioengineering (BIBE)

Abstract

2025

A review of advanced controller methodologies for robotic manipulators

Autores
Tinoco, V; Silva, MF; Santos, FN; Morais, R; Magalhaes, SA; Oliveira, PM;

Publicação
INTERNATIONAL JOURNAL OF DYNAMICS AND CONTROL

Abstract
With the global population on the rise and a declining agricultural labor force, the realm of robotics research in agriculture, such as robotic manipulators, has assumed heightened significance. This article undertakes a comprehensive exploration of the latest advancements in controllers tailored for robotic manipulators. The investigation encompasses an examination of six distinct controller paradigms, complemented by the presentation of three exemplars for each category. These paradigms encompass: (i) adaptive control, (ii) sliding mode control, (iii) model predictive control, (iv) robust control, (v) fuzzy logic control and (vi) neural network control. The article further introduces and presents comparative tables for each controller category. These controllers excel in tracking trajectories and efficiently reaching reference points with rapid convergence. The key point of divergence among these controllers resides in their inherent complexity.

2025

Predicting Aesthetic Outcomes in Breast Cancer Surgery: A Multimodal Retrieval Approach

Autores
Zolfagharnasab, MH; Freitas, N; Gonçalves, T; Bonci, E; Mavioso, C; Cardoso, MJ; Oliveira, HP; Cardoso, JS;

Publicação
ARTIFICIAL INTELLIGENCE AND IMAGING FOR DIAGNOSTIC AND TREATMENT CHALLENGES IN BREAST CARE, DEEP-BREATH 2024

Abstract
Breast cancer treatments often affect patients' body image, making aesthetic outcome predictions vital. This study introduces a Deep Learning (DL) multimodal retrieval pipeline using a dataset of 2,193 instances combining clinical attributes and RGB images of patients' upper torsos. We evaluate four retrieval techniques: Weighted Euclidean Distance (WED) with various configurations and shallow Artificial Neural Network (ANN) for tabular data, pre-trained and fine-tuned Convolutional Neural Networks (CNNs) and Vision Transformers (ViTs), and a multimodal approach combining both data types. The dataset, categorised into Excellent/Good and Fair/Poor outcomes, is organised into over 20K triplets for training and testing. Results show fine-tuned multimodal ViTs notably enhance performance, achieving up to 73.85% accuracy and 80.62% Adjusted Discounted Cumulative Gain (ADCG). This framework not only aids in managing patient expectations by retrieving the most relevant post-surgical images but also promises broad applications in medical image analysis and retrieval. The main contributions of this paper are the development of a multimodal retrieval system for breast cancer patients based on post-surgery aesthetic outcome and the evaluation of different models on a new dataset annotated by clinicians for image retrieval.

2025

Success Factors for Public Sector Information Systems Projects

Autores
Gonçalves, A; Varajão, J; Moura Oliveira, P; Moura, I;

Publicação
Digital Government: Research and Practice

Abstract
Information Systems (IS) projects are critical for organizational development, both in the private and public sectors. The relevance and complexity inherent in this type of project require management to be fully aware of the factors that influence success. This study contributes to the literature on public-sector IS project management by providing a comprehensive set of Success Factors (SFs) for different levels of the administration. The research method comprised a literature review, six case studies of central government, local government, and other types of administration, and a questionnaire-based survey of public sector IS experts. Forty-four SFs were identified, described, and organized in nine categories: organization and environment; strategy; project; scope; project manager and project team; stakeholders; vendors; clients and users; and monitoring and control. Our results add a new perspective to the theoretical body of knowledge on the SFs for IS projects in the public sector.

2025

Enhancing Digital Libraries Through NLP and Recommender Systems: Current Trends and Future Prospects with Large Language Models

Autores
da Silva Cardoso, H; Rocio, V;

Publicação
Communications in Computer and Information Science - Technology and Innovation in Learning, Teaching and Education

Abstract

2025

Introduction to the special issue on application of multi-agent systems, AI and blockchain in smart energy systems (VSI-sea)

Autores
Zamani, M; Prieta Pintado, Fdl; Pinto, T;

Publicação
Comput. Electr. Eng.

Abstract
[No abstract available]

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