Percorrer por autor "Ferreira, Pedro"
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- Cooperação entre a comunidade e o ensino superiorPublication . Abreu, Madalena; Bigotte De Almeida, Maria Emília; Brites, Claudia; Araújo, Inês; Capitão, Silvino; Chang, Nelson; Carvalho, Vera; Carreiro, João; Costa, Lúcia Simões; Castro, Luis; Dias, Susana; Dinis, I.; Ferraz, Helena; Ferreira, Pedro; Ferreira, Rui; Gaspar, José; Gomes, David; Malça, C.
- Marketing viral ao serviço de marcas globais: o caso da pepsi maxPublication . Marques, Alzira; Francisco, Ana; Vieira, Bárbara; Ferreira, Pedro; Simões, TâniaNuma economia essencialmente digital como a actual, o consumidor é um forte promotor das marcas e é nesse contexto que o marketing viral se pode assumir como uma estratégia importante, na medida em que permite que uma mensagem se dissemine rapidamente, alcançando um considerável número de indivíduos. No entanto, a imprevisibilidade associada a este conceito pode ditar o insucesso de uma campanha promocional, com prejuízo para a imagem da marca. O presente artigo consiste num estudo de caso por via de análise de imprensa e redes sociais e incide na avaliação do impacto provocado pela campanha da Pepsi Max, que se propagou rapidamente em Portugal, reflectindo o efeito imprevisível do marketing viral.
- Relationship between family function and exercise capacity and inspiratory muscle strength in COPDPublication . Paixão, Cátia Filipa Pinto da; Rebelo, Patrícia; Oliveira, Ana; Jácome, Cristina; Cruz, Joana; Freitas, Célia; Loureiro, Helena; Rua, Marília; Ferreira, Pedro; Marques, AldaChronic obstructive pulmonary disease (COPD) is a multidimensional disease known to affect not only patients but also family functioning. Family functioning affects several dimensions of patients’ psychological and social performance, however the association with patient’s physical outcomes remains unknown. This study explored associations between family function and exercise capacity and inspiratory muscle strength in COPD. 20 patients with COPD (85% male; 67.5±10y; 54.3±29.4FEV1%predicted) were included. Sociodemographic, anthropometric and lung function data were collected to characterise the sample. 2 six-minute walk tests (6MWT) and up to 5 maximum inspiratory pressure (MIP) manoeuvres were performed. The best performances were analysed. Family function was assessed with the family adaptability and cohesion evaluation scale (FACES-IV). Correlations were explored with the Spearman’s correlation coefficient. Moderate and positive correlations were found between family satisfaction and 6MWT (r=0.55; p=0.02) and between family cohesion and MIP values (r=0.59; p=0.01). Strong and positive correlations (r=0.61; p=0.01) were found between family satisfaction and MIP values. No further correlations were found (Fig.1). Family function correlated significantly with patients’ exercise capacity and inspiratory muscle strength. Further research on family functioning is needed to enhance knowledge on COPD management.
- Solving the Regenerator Location Problem using Swarm Intelligence AlgorithmsPublication . Ferreira, Pedro; Pessoa, Rodrigo; Bernardino, Anabela; Bernardino, Eugénia; Piedade, Maria Beatriz; Goncalves, AlexandrinoIn optical networks, due to deficiencies in the fibre (attenuation, dispersion, conversion)the signal strength deteriorates as it gets further away from its source. For that reason, the distance that a signal can travel without losing or corrupting information is limited. Therefore, it is necessary to regenerate the signals periodically using regenerators. Given an optical network, the regenerator location problem tries to install a subset of regenerators with the minimum possible cost, in a way that each pair of nodes can communicate with each other. In this paper, two swarm optimisation algorithms: Ant Colony Optimisation and Bees Algorithm are used to solve this problem. We compare our results with other algorithms used in literature to solve the same problem. Simulation results obtained using 480 different instances prove their efficiency in solving the regenerator location problem.