77 documents found, page 1 of 8
Technological skills: perspective of Portuguese higher education students and e...
Marques, Filipe; Domingos, Alexandra; Jorge, AnaEste artigo analisa se as competências tecnológicas desenvolvidas pelos estudantes finalistas dos cursos de 1.º ciclo de estudos em Contabilidade, do ensino superior politécnico público português, correspondem às expectativas das entidades empregadoras, identificando possíveis diferenças significativas de opiniões. Através de testes paramétricos, verificou-se que tanto os estudantes como as entidades empregador...
Computational and experimental study of the interaction between a crutch and a ...
Silva, Mariana Rodrigues da; Marques, Filipe; Gonçalves, Sérgio B.; Silva, Miguel Tavares da; Flores, PauloThe 2022 global report on assistive technology of the World Health Organization and the United Nations Children’s Fund (UNICEF) estimates that more than 2.5 billion people globally use one or more assistive devices, and this number is expected to rise to 3.5 billion in 2050. Crutches are assistive devices utilized by disabled patients to restore the mobility lost due to the disability and regain some degree of ...
Development and validation of a musculoskeletal human model to study crutch-ass...
Flores, Paulo; Rodrigues da Silva, Mariana; Marques, Filipe; Gonçalves, S.B.; Silva, M.T.The main purpose of this work is to present and discuss the development and validation of an advanced musculoskeletal human model to study crutch-assisted gait. For that, a 3D multibody approach is utilized, which incorporates the kinematic chain of the human body, the muscle structure, as well as the key features of crutches. The connection between the crutches and the human model is modeled by imposing kinema...
Modeling and analysis of the interaction between the crutch and the ground in h...
Silva, Mariana Rodrigues da; Marques, Filipe; Gonçalves, Sérgio B.; Silva, Miguel Tavares da; Flores, PauloBiomechanics of human motion is a multidisciplinary field that involves the study of the mechanical aspects of the human body and the impact that forces have on the movement of the anatomical segments. The use of computational tools to understand the dynamic behavior of the human movement has been rising due to the wide range of applications related to improving performance or treating injury. The knowledge on ...
Thermal performance evaluation of pure PDMS and PDMS composites heat exchangers
Souza, Reinaldo; Nobrega, Glauco; Afonso, Inês Santos; Pereira, José; Cardoso, Elaine; Marques, Filipe; Vilarinho, Cândida; Moita, Ana; Lima, Rui A.This study investigates the heat transfer performance of three types of heat exchangers: one made of pure polydimethylsiloxane (PDMS), another incorporating recycled graphite (PDMS + Graphite 30 mass%), and a third using commercial aluminium nanoparticles (PDMS + Aluminium 30 mass%). Thermal performance was evaluated by measuring the thermal conductivity of the materials, analysing experimental convection tests...
A general formulation of the contact interaction between a circle surface and a...
Gismeros Moreno, Raúl; Marques, Filipe; Corral Abad, Eduardo; Gómez García, María Jesús; Meneses Alonso, Jesús; Flores, PauloRepresentation of contact/impact mechanics in the context of multibody dynamics still poses a big challenge. The main problem lies in finding a balance between results accuracy and computational efficiency. With the purpose of describing this complex phenomenon, there exist different modelling techniques. A widespread approach consists of reducing the contact problem to a geometrically determined contact point ...
On the modeling crutch assisted locomotion: examining the interfaces with the g...
Sousa, Maria Francisca; Silva, Mariana Isabel Santos Rodrigues; Marques, Filipe; Silva, Miguel Tavares da; Flores, Paulo[Excerpt] Over the years, assistive devices for locomotion, such as crutches, have been developed to provide support to patients suffering from mobility and/or independence impairments [1]. According to the World Health Organization, more than a billion people worldwide depend on one or more assistive devices, and this number is estimated to double by 2050 [2]. Patients suffering from disabilities, such as spin...
Projeto integrador em engenharia mecânica
Flores, Paulo; Marques, Filipe; Silva, Mariana Isabel Santos Rodrigues; Novais, FranciscoEste livro aborda o ensino de projetos integradores no contexto da formação em Engenharia Mecânica, em que se dá particular destaque ao processo de teardown e ao estudo da dinâmica do carro. Após uma breve abordagem pedagógica aos projetos integradores, são apresentados os conceitos fundamentais relativos à metrologia dimensional e ao processo teardown. Subsequentemente, são detalhados os principais aspetos rel...
Dynamic modeling and analysis of a formula student car with focus on the fricti...
Flores, Paulo; Marques, Filipe; Novais, FranciscoFriction is a complex phenomenon that appears as a tangential resistive force acting between contacting surfaces, which have relative motion. Friction has a nefarious effect on the dynamic performance of a large variety of mechanical systems, namely in terms of energy dissipation, noise produced, reliability, etc. Therefore, it is important to develop approaches that allow a detailed identification and predicti...
A new skeletal model for the ankle joint complex
Silva, Mariana Isabel Santos Rodrigues; Marques, Filipe; Miguel Tavares da Silva; Flores, PauloThe talocrural and the talocalcaneal articulations collectively form the ankle joint complex of the human foot and are the focus of investigation of this work. The talocrural articulation enables plantarflexion and dorsiflexion, while the talocalcaneal articulation allows inversion and eversion of the foot. A comprehensive analysis of the literature suggests that the ankle joint complex is modeled in different ...