22 documents found, page 1 of 3
Improving motor competence of children: the “Super Quinas” intervention program...
Rodrigues, Luis; Cordovil, Rita; Costa, Júlio; Seabra, André;; Guilherme, José; Vale, Susana; Luz, Carlos; Flôres, Fábio; Lagoa, MariaThe objective of this study was to describe the effects of an extra hour of a structured motor program on the motor competence (MC) of children 6–10 years old.. Design: The need for movement interventions to enhance MC among school-aged children has gained vital importance in the last years, given the negative secular trends reported. Hence, the Portuguese Football Federation organized an intervention program o...
Doença renal crónica: um guia prático (ACT-NAU)
Corte-Real, Ana; Nunes, Andreia; Rodrigues, Ana Isabel; Belino, Carolina; Outerelo, Cristina; Ramos, Diogo; Silva, Gil; Guimarães, GilbertoA doença renal crónica (DRC) é um importante problema de saúde pública que está associada ao aumento da morbimortalidade global e é um fator de risco significativo para a doença cardiovascular. A prevalência da DRC tem aumentado exponencialmente em todo o mundo. A sua prevalência em Portugal é de 20,9% nos estádios 1 a 5 da DRC e de 9,8% para os estádios ≥G3a/A1 da DRC, pelo que é de extrema importância que est...
The impact of artificial intelligence on audit profession
Rodrigues, Luis; Pereira, José; da Silva, Amélia Ferreira; Ribeiro, HumbertoThere is an expectation that the introduction of artificial intelligence (AI) will bring about profound changes in the current paradigm of the audit profession, ensuring better reliability and security in the analysis of financial statements. This paper reports the results of a questionnaire survey to ascertain the perceptions of certified auditors, from two Portuguese districts, regarding the impact of artific...
Optical wireless communications for underwater monitoring and smart indoor farm...
Dowhuszko, Alexis A.; Rodrigues, Luis; Alves, Luis Nero; Cespedes, Máximo Morales; Matus, Vicente; Perez-Jimenez, Rafael; Rufo, JulioClimate change and the activities of humans are putting constant pressure on ecosystems around the globe. Without notable changes in the linear systems for production and consumption, the growing demand for natural resources will lead to serious impacts on the planet. In this context, Optical Wireless Communications (OWC), a technology that relies on electromagnetic signals in a much higher frequency band than ...
Treatment of carcinoma in situ of larynx: surgery versus radiotherapy
Antunes, Joselina; Gonçalves, Débora; Rodrigues, Luis; Ramalho, Sara; Montalvão, Pedro; Magalhães, MiguelObjectives: Evaluate the results of different treatments used in the treatment of in situ squamous cell carcinoma of the larynx. Methods: Observational study that included patients followed in Instituto Português de Oncologia of Lisbon. The study included a group of patients with a diagnosis of in situ squamous cell carcinoma of the larynx, diagnosed between 2006 and 2018, and treated with surgery or radiother...
Improving the reliability of power LEDs with diamond boards
Kyatam, Shusmitha; Rodrigues, Luis; Maslovski, Stanislav; Alves, Luis N.; Mendes, Joana C.Despite being efficient devices, when compared to other light sources, high power light emitting diodes (LEDs) suffer from heating effects that have a negative impact on their reliability. Power LEDs are typically assembled on metal core printed circuit boards (MCPCBs) to facilitate the extraction of the heat. Diamond boards can also be used for the same purpose, since diamond is the best isotropic conductor of...
Optimized analog multi-band carrierless amplitude and phase modulation for Visi...
Rodrigues, Luis; Figueiredo, Mónica; Alves, Luis NeroThis paper presents a multi-user Visible Light Communication (VLC)-based Internet of Things (IoT) system using multi band-Carrierless Amplitude and Phase (m-CAP) modulation for IoT applications. The proposed system uses a digital m-CAP modulator embedded in a ceiling LED light fixture and analog receivers, aiming at low-cost, low-power, and small-sized IoT devices. The performance was evaluated in terms of the ...
Resource design in federated sensor networks using RELOAD/CoAP overlay architec...
Rodrigues, Luis; Guerreiro, Joel; Correia, NoéliaSensor networks can be federated for wide-area geographical coverage using RELOAD/CoAP architectures. In this case, proxy nodes of constrained environments form a P2P overlay to announce device resources or sensor data. Although this is a standard-based solution, consistency problems may arise because P2P resources (data objects stored at the overlay network) may end up including similar device resource entries...
Allocation of resources in SAaaS Clouds managing thing mashups
Guerreiro, Joel; Rodrigues, Luis; Correia, NoéliaThe sensing and actuation as-a-service is an emerging business model to make sensors, actuators and data from the Internet of Things more attainable to everyday consumer. With the increase in the number of accessible Things, mashups can be created to combine services/data from one or multiple Things with services/data from virtual Web resources. These may involve complex tasks, with high computation requirement...
Resource allocation model for sensor clouds under the sensing as a service para...
Guerreiro, Joel; Rodrigues, Luis; Correia, NoéliaThe Sensing as a Service is emerging as a new Internet of Things (IoT) business model for sensors and data sharing in the cloud. Under this paradigm, a resource allocation model for the assignment of both sensors and cloud resources to clients/applications is proposed. This model, contrarily to previous approaches, is adequate for emerging IoT Sensing as a Service business models supporting multi-sensing applic...