327 documents found, page 1 of 33
Housing - Santa Maria de Alcamim, Lisboa. Cohousing - Vila Adentro, Faro
Salema, Sofia; Rocha, João; Freitas, Francisco; Valente, Luís; Oliveira, Bruno; dos Santos, MarleneO livro resulta da Exposição MAIS DO QUE CASAS realizada no MUDE, Museu do Design, entre 28 de setembro de 2024 e 26 de janeiro de 2025 onde se expôs os trabalhos dos alunos do ensino superior de Arquitetura, de Arquitetura Paisagista e de Belas Artes de Portugal sobre a habitação no âmbito das comemorações dos 50 anos da Revolução de Abril de 1974. Coedição MUDE – Museu do Design e FAUP – Faculdade de Arquitet...
Mechanical Characterization of Eco-Friendly Composites: Green Epoxy Resin Reinf...
Ribeiro, J.E.; Lopes, Hernani; Rocha, JoãoThe increasing demand for sustainable materials has fostered the development of natural fiber-reinforced composites as eco-friendly alternatives to petroleum-based systems. This work investigates the mechanical performance of GreenPoxy resin reinforced with coir fibers through a comprehensive experimental program. Fiber properties were first characterized by density and tensile tests, while the resin was evalua...
Influence of Time and Temperature Variables on the Heat Treatment of an AL-MG S...
Ribeiro, J.E.; Lopes, Hernani; Rocha, JoãoThis study investigates the effect of time and temperature on the heat treatment of 6082 Al-Mg-Si alloy. Solubilization, quenching, and artificial aging were performed under parameter combinations defined using the Taguchi method. Mechanical testing supported the development of a multiple linear regression model, which identified aging temperature as the most significant factor influencing ultimate tensile stre...
Key influences on competitive load in youth regional teams during National Bask...
Rocha, João; Serrano, João; López-Sierra, Pablo; Arede, Jorge; Ibáñez, SergioBackground: This study examines how contextual factors influence the match load experienced by U14 athletes. Methods: Ninety-six male players from eight Portuguese regional selection teams were monitored during three official matches each, using WIMU Pro™ inertial devices with ultra-wideband (UWB) tracking systems. Fifteen internal and external load variables were analyzed, including player load/min, high-speed...
A conceptual design of multibus architectures for smart homes in residential DC...
Coelho, Sérgio; Rocha, João; Sepulveda, Manuel J.; Monteiro, Vítor Duarte Fernandes; Afonso, João L.Hand to hand with the ongoing energy transition, this paper proposes a conceptual multibus architecture for smart homes, designed to improve flexibility, efficiency, and scalability of residential DC microgrids. The proposed solution centralizes DC distribution at 800 VDC using the first conversion stage of a solid-state transformer (SST), while the subsequent two stages are allocated at the smart home level. I...
Design and Implementation of a DC–DC resonant LLC converter for electric vehicl...
Rocha, João; Amin, Saghir; Coelho, Sérgio; Rego, Gonçalo; Afonso, João L.; Monteiro, Vítor Duarte FernandesThis article presents the design and implementation of a DC–DC power converter for application in electric vehicle (EV) fast-charging systems. The prototype is of the resonant LLC type and consists of a high-power transformer operating at high frequency, which is an essential feature for the adequate behavior of the EV fast-charging system as a whole. As demonstrated throughout the article, by using this conver...
Variable DC-Link voltage for an LLC converter with wide input and output voltag...
Rocha, João; Amin, Saghir; Awais, Muhammad; Rego, Goncalo; Afonso, João L.; Monteiro, Vítor Duarte FernandesThis paper introduces an LLC converter with a variable input DC-link voltage, aimed to address the challenges of single stage DC-DC converter with wide output voltage range associated with electric vehicle (EV) fast chargers. The proposed design optimizes the input/output voltage ratio to enhance efficiency across a wide range of charging operating power values. The analysis highlights the converter's ability t...
A Comprehensive Review of Fused Filament Fabrication: Numerical Modeling Approa...
Enriconi, Maria; Rodriguez, Rocío; Araújo, Márcia; Rocha, João; García-Martín, Roberto; Ribeiro, J.E.; Pisonero, Javier; Rodríguez-Martín, ManuelFused Filament Fabrication (FFF) has become a widely adopted additive manufacturing technology due to its cost-effectiveness, material versatility, and accessibility. However, optimizing process parameters, predicting material behavior, and ensuring structural reliability remain major challenges. This review analyzes state-of-the-art computational methods used in FFF, which are categorized into four main areas:...
Field Position-Related Variations in Body Mass, Postural Control, and Isokineti...
Rocha, João; Cruz, Hélder; Teixeira, José Eduardo; Vila-Chã, Carolina; Bartolomeu, Raúl Filipe; Ribeiro, João Nuno; Martins, Faber; Esteves, Pedro TiagoCombining body composition, dynamic postural control, and isokinetic strength allows for a comprehensive physical and functional assessment of football players across specific playing positions. The aim of this study was to analyze the field position-related variations in the physical and functional profiles of male football players. A convenience sample of 23 professional male football players from a Portugues...
Optimization of Machining Parameters for the Fixed Pocket Cycle
Stein, Felipe Yukio Miyasaki; Giacomitti, Nickolas; Valério, Gustavo; Paulo, Jorge; Ribeiro, J.E.; Rocha, JoãoIn a competitive industrial setting, optimizing machining processes is important for enhancing surface quality and productivity. This study focuses on optimizing pocket milling parameters for 5083 H111 aluminum alloy using three toolpath strategies: Zig-Zag, Parallel Spiral, and One-Way. To achieve these goals, the Taguchi method, Grey Relational Analysis (GRA), ANOVA, and visual amplification were employed to ...