António Fernando Ribeiro

Weathering impacts on iron ore pellets Open

José Hamilton Resende Tavares, José Aurélio Medeiros da Luz, António Fernando Ribeiro · 2025

Climatic weathering of iron ore pellets during storage and transportation critically compromises their structural integrity. This study evaluates the aging effects over 63 days of outdoor exposure on three pellet types: standard for direct…

Neuroliderança: Impactos Cognitivos nas Equipes de Alta Performance Open

Gabriel César Dias Lopes, Estélio Silva Barbosa, António Fernando Ribeiro · 2025

Introdução: A neuroliderança surge como uma abordagem inovadora na intersecção entre neurociência e liderança, destacando a importância dos processos cognitivos para otimizar o desempenho organizacional. Este estudo explora como a compreen…

Multi-Neural Network Localisation System with Regression and Classification on Football Autonomous Robots Open

Ana Carolina Coelho Lopes, António Fernando Alcântara Ribeiro, Tiago Ribeiro, Gil Lopes, António Fernando Ribeiro · 2025

In environments like the RoboCup Middle Size League (MSL), precise and rapid localisation of robots is crucial for effective autonomous interaction. This study addresses the limitations of conventional localisation approaches—often based o…

Protocolo para realização da técnica de acabamento e polimento de restauração provisória em resina acrílica autopolimerizável: relato de experiência Open

Natália Teixeira Tavares Branco, António Fernando Ribeiro, Juliana Martins, Ricardo Rodrigues Vaz · 2025

Em reabilitação oral através de técnicas indiretas, as restaurações provisórias constituem requisito fundamental para o sucesso do tratamento protético restaurador. Elas são responsáveis pela proteção do complexo dentina-polpa, proteção do…

The Ultimate Evaluation of Current Consumption and QoS Metrics in 5G Mobile Networks Over IP Multimedia Subsystem (IMS) Open

Jussif J. Abularach Arnez, Walmir Acioli e Silva, Wederson Medeiros Silva, António Fernando Ribeiro, Janislley Oliveira de Sousa · 2025

With the widespread deployment of 5G, understanding its energy impact is crucial. This work evaluates the energy efficiency and Quality of Service (QoS) performance of 5G networks, comparing Non-Standalone (NSA) and Standalone (SA) archite…

Development of the Anthropomorphic Arm for Collaborative and Home Service Robot CHARMIE Open

Fawad A. Syed, Gil Lopes, António Fernando Ribeiro · 2024

Service robots are rapidly transitioning from concept to reality, making significant strides in development. Similarly, the field of prosthetics is evolving at an impressive pace, with both areas now being highly relevant in the industry. …

Lizard Body Temperature Acquisition and Lizard Recognition Using Artificial Intelligence Open

Ana L. Afonso, Gil Lopes, António Fernando Ribeiro · 2024

The acquisition of the body temperature of animals kept in captivity in biology laboratories is crucial for several studies in the field of animal biology. Traditionally, the acquisition process was carried out manually, which does not gua…

ICARSC 2024 List Reviewer Page Open

Cristina P. Santos, José Lima, Vítor H. Pinto, António Fernando Ribeiro, Nuno Lau , et al. · 2024

Development and implementation of a new approach for posture control of a hexapod robot to walk in irregular terrains Open

Joana Coelho, Bruno Dias, Gil Lopes, António Fernando Ribeiro, Paulo Flores · 2023

The adaptability of hexapods for various locomotion tasks, especially in rescue and exploration missions, drives their application. Unlike controlled environments, these robots need to navigate ever-changing terrains, where ground irregula…

Multibody model of the human-inspired robot CHARMIE Open

Fernando Ribeiro Gonçalves, Tiago Ribeiro, António Fernando Ribeiro, Gil Lopes, Paulo Flores · 2023

The rapid ageing of the worldwide population raises pressing concerns related to ensuring proper healthcare and quality of life for older adults. A human-like mobile domestic robot, named CHARMIE, is being produced to aid in these situatio…

End-to-End Approach for Autonomous Driving: A Supervised Learning Method Using Computer Vision Algorithms for Dataset Creation Open

Inês A. Ribeiro, Tiago Ribeiro, Gil Lopes, António Fernando Ribeiro · 2023

This paper presents a solution for an autonomously driven vehicle (a robotic car) based on artificial intelligence using a supervised learning method. A scaled-down robotic car containing only one camera as a sensor was developed to partic…

Large-Scale Tactile Detection System Based on Supervised Learning for Service Robots Human Interaction Open

F.N. Cunha, Tiago Ribeiro, Gil Lopes, António Fernando Ribeiro · 2023

In this work, a large-scale tactile detection system is proposed, whose development is based on a soft structure using Machine Learning and Computer Vision algorithms to map the surface of a forearm sleeve. The current application has a cy…

RoboParty: 20 Editions Building Robots and Motivating Youngsters for Science, Technology, Engineering, and Mathematics Subjects [Competitions] Open

António Fernando Ribeiro, Gil Lopes, N. R. Pereira, J.B. Cruz · 2022

Robotic products and services are quickly getting into people’s homes and it is important to prepare the youngsters to new challenges. One way to motivate them is through competitive events [1]. Back in 2006 the Laboratory of Automation an…

A Recursive Algorithm for the Forward Kinematic Analysis of Robotic Systems Using Euler Angles Open

Fernando Ribeiro Gonçalves, Tiago Ribeiro, António Fernando Ribeiro, Gil Lopes, Paulo Flores · 2022

Forward kinematics is one of the main research fields in robotics, where the goal is to obtain the position of a robot’s end-effector from its joint parameters. This work presents a method for achieving this using a recursive algorithm tha…

YOLOv3: Traffic Signs & Lights Detection and Recognition for Autonomous Driving Open

Rafael Souza Marques, Tiago Ribeiro, Gil Lopes, António Fernando Ribeiro · 2022

Advanced Driver Assistance Systems (ADAS) relates to various in-vehicle systems intended to improve road traffic safety by assisting drivers with improved road awareness, inherent dangers and other drivers nearby. Traffic sign detection an…

Combining YOLO and Deep Reinforcement Learning for Autonomous Driving in Public Roadworks Scenarios Open

Nuno Andrade, Tiago Ribeiro, Joana Coelho, Gil Lopes, António Fernando Ribeiro · 2022

Autonomous driving is emerging as a useful practical application of Artificial Intelligence (AI) algorithms regarding both supervised learning and reinforcement learning methods.AI is a well-known solution for some autonomous driving probl…

Reactive Locomotion of a Hexapod for Navigation Across Irregular Ground Open

Joana Coelho, Bruno Dias, Gil Lopes, António Fernando Ribeiro, Paulo Flores · 2022

CHARMIE: A Collaborative Healthcare and Home Service and Assistant Robot for Elderly Care Open

Tiago Ribeiro, Fernando Ribeiro Gonçalves, Inês S. Garcia, Gil Lopes, António Fernando Ribeiro · 2021

The global population is ageing at an unprecedented rate. With changes in life expectancy across the world, three major issues arise: an increasing proportion of senior citizens; cognitive and physical problems progressively affecting the …

Trends in the Control of Hexapod Robots: A Survey Open

Joana Coelho, António Fernando Ribeiro, Bruno Dias, Gil Lopes, Paulo Flores · 2021

The static stability of hexapods motivates their design for tasks in which stable locomotion is required, such as navigation across complex environments. This task is of high interest due to the possibility of replacing human beings in exp…

Application of Dielectric Barrier Discharge (DBD) atmospheric pressure plasma for pretreatment of medical textiles Open

Inês Pinheiro, Jorge Padrão, Carla Silva, António Fernando Ribeiro, V. Bouça , et al. · 2021

Conventional pretreatment by wet chemistry and/or low-pressure plasma have several drawbacks [1]. Atmospheric plasma is an alternative and cost-competitive method to low-pressure plasma and wet chemical pretreatments, allowing continuous a…

Learning Robotics: a Review Open

António Fernando Ribeiro, Gil Lopes · 2020

Where to look when identifying roadkilled amphibians? Open

Marc Franch, Cristiano Silva, Gil Lopes, António Fernando Ribeiro, Paulo Trigueiros , et al. · 2019

Roads have multiple effects on wildlife; amphibians are one of the groups more intensely affected by roadkills. Monitoring roadkills is expensive and time consuming. Automated mapping systems for detecting roadkills, based on robotic compu…

Autonomous 4DOF Robotic Manipulator Prototype for Industrial Environment and Human Cooperation Open

Inês S. Garcia, Fernando Ribeiro Gonçalves, Tiago Ribeiro, Pedro Fernandes, César B. Rocha , et al. · 2019

This paper describes the design and development of an autonomous robotic manipulator with four degrees of freedom. The manipulator is named RACHIE - "Robotic Arm for Collaboration with Humans in Industrial Environment". The idea was to cre…

Q-Learning for Autonomous Mobile Robot Obstacle Avoidance Open

Tiago Ribeiro, Fernando Ribeiro Gonçalves, Inês S. Garcia, Gil Lopes, António Fernando Ribeiro · 2019

An approach to the problem of autonomous mobile robot obstacle avoidance using Reinforcement Learning, more precisely Q-Learning, is presented in this paper. Reinforcement Learning in Robotics has been a challenging topic for the past few …

Development of an anthropomorphic mobile manipulator with human, machine and environment interaction Open

Fernando Ribeiro Gonçalves, Tiago Ribeiro, Inês S. Garcia, António Fernando Ribeiro, António Monteiro , et al. · 2019

An anthropomorphic mobile manipulator robot (CHARMIE) is being developed by the University of Minho's Automation and Robotics Laboratory (LAR). The robot gathers sensorial information and processes using neural networks, actuating in real …

Rapid Prototyping Process Using Metal Directly Open

António Fernando Ribeiro, John Norrish · 2018

Rapid Prototyping emerged in the USA in the late 80's and it made the whole industry rethink \ntheir way of making prototypes. Several new different process have emerged since then and these \nvary in materials, times, prices, fInishing qu…

Development of a prototype robot for transportation within industrial environments Open

Tiago Ribeiro, Inês S. Garcia, Dylan Pereira, João Ribeiro, Gil Lopes , et al. · 2017

This paper describes the design and development of an autonomous robot for the Robot@Factory league at “Festival Nacional de Robótica 2016”, held in Bragança, Portugal. This paper describes all the hardware and software components develope…

Motion Control of Mobile Autonomous Robots Using Non-linear Dynamical Systems Approach Open

António Fernando Ribeiro, Gil Lopes, Tiago V. Maia, Hélder Ribeiro, Pedro Osório , et al. · 2016

Vision Based Referee Sign Language Recognition System for the RoboCup MSL League Open

Paulo Trigueiros, António Fernando Ribeiro, Leonardo Pequeno Reis · 2016

In RoboCup Middle Size league (MSL) the main referee uses assisting technology, controlled by a second referee, to support him, in particular for conveying referee decisions for robot players with the help of a wireless communication syste…

A 45° saw-dicing process applied to a glass substrate for wafer-level optical splitter fabrication for optical coherence tomography Open

Marino J. Maciel, C. G. Costa, M. F. Silva, S. B. Goncalves, A.C. Peixoto , et al. · 2016

This paper reports on the development of a technology for the wafer-level fabrication of an optical Michelson interferometer, which is an essential component in a micro optoelectromechanical system (MOEMS) for a miniaturized optical cohere…

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