21 documents found, page 1 of 3
Blockchain and Internet of Things for electrical energy decentralization: A rev...
Casquiço, M.; Mataloto, B.; Ferreira, J.; Monteiro, V.; Afonso, J. A.; Afonso, J. A.The decentralization in the electrical power grids has gained increasing importance, especially in the last two decades, since transmission system operators (TSO), distribution system operators (DSO) and consumers are more aware of energy efficiency and energy sustainability issues. Therefore, globally, due to the introduction of energy production technologies near the consumers, in residential and industrial s...
Smart home power management system for electric vehicle battery charger and ele...
Figueiredo, R. E.; Monteiro, V.; Ferreira, J.; Afonso, J. L.; Afonso, J. A.This paper presents a power management system (PMS) designed for smart homes aiming to deal with the new challenges imposed by the proliferation of plug-in electric vehicles (EVs) and their coexistence with other residential electrical appliances. The PMS is based on a hybrid wireless network architecture composed by a local hub/gateway and several Bluetooth Low Energy (BLE) and Wi-Fi sensor/actuator devices. T...
Processo de cuidados à pessoa com delírio de Cotard: Uma reflexão sobre a ação.
Rodrigues, A.; Calhoa, A.; André, Clara; Monteiro, V.; Gonçalves, F.No processo de cuidados à pessoa com doença mental, no contexto do Estágio V – Enfermagem de Saúde Mental e Psiquiatria, prestamos cuidados à pessoa com delírio de Cotard, o que despoletou o nosso interesse no aprofundar desta temática. Cotard diz-nos que “as pessoas que demonstram este tipo de delírios apresentam a recusa dos próprios órgãos e sangue, além de acreditarem que todas as suas partes corpóreas, inc...
5GMEDE-5G mobile edge computing with enriched radio network information services
Akman, A.; Monteiro, V.; Marques, P.; Rodriguez, J.; Vieira, Pedro; Marques, H.; Abdalla, A.5G has a number of challenges to solve. Higher data usage and processing power necessities have emerged from the increasing number of mobile users as well as mobile applications becoming more and more demanding. There is a significant need to reduce the latency of the mobile network while cutting down on energy consumption. Backhaul traffic needs to be optimized to avoid setting up costly backhaul connections. ...
Psychometric properties of the Portuguese version of the Achievement Emotions Q...
Sanches, Cristina; Monteiro, V.; Mata, Lourdes; Santos, Natalie; Gomes, MartaAbstract: The main purposes of the current research were to translate and adapt the Achievement Emotions Questionnaire – Elementary School (AEQ-ES) into Portuguese and to analyze its psychometric properties. A sample of 350 Portuguese third and fourth graders (aged 7 to 12 years) completed the Portuguese version of the AEQ-ES (AEQ-ES-P). As does the original version, the AEQ-ES-P measures students’ enjoyment, b...
Vehicle electrification: new challenges and opportunities for smart grids
Monteiro, V.; Afonso, J. A.; Ferreira, J. C.; Afonso, J. L.Nowadays, concerns about climate change have contributed significantly to changing the paradigm in the urban transportation sector towards vehicle electrification, where purely electric or hybrid vehicles are increasingly a new reality, supported by all major automotive brands. Nevertheless, new challenges are imposed on the current electrical power grids in terms of a synergistic, progressive, dynamic and stab...
IoT and blockchain paradigms for EV charging system
Martins, J. P.; Ferreira, J.; Monteiro, V.; Afonso, J. A.; Afonso, J. L.In this research work, we apply the Internet of Things (IoT) paradigm with a decentralized blockchain approach to handle the electric vehicle (EV) charging process in shared spaces, such as condominiums. A mobile app handles the user authentication mechanism to initiate the EV charging process, where a set of sensors are used for measuring energy consumption, and based on a microcontroller, establish data commu...
The electric vehicle in smart homes: A review and future perspectives
Monteiro, V.; Afonso, J. A.; Ferreira, J. C.; Sousa, T. J. C.; Afonso, J. L.The electric mobility dissemination is forcing the adoption of new technologies and operation paradigms, not only focusing on smart grids, but also on smart homes. In fact, the emerging technologies for smart homes are also altering the conventional grids toward smart grids. By combining the key pillars of electric mobility and smart homes, this paper characterizes the paradigms of the electric vehicle (EV) in ...
An energy management platform for public buildings
Ferreira, J. C.; Afonso, J. A.; Monteiro, V.; Afonso, J. L.This paper describes the development and implementation of an electronic platform for energy management in public buildings. The developed platform prototype is based on the installation of a network of wireless sensors using the emerging Long Range (LoRa) low power long-range wireless network technology. This network is used to collect sensor data, which is stored online and manipulated to extract knowledge an...
Experimental validation of a novel architecture based on a dual-stage converter...
Monteiro, V.; Ferreira, J. C.; Melendez, A. A. N.; Couto, C.; Afonso, J. L.The experimental validation of a novel architecture of an off-board three-phase fast battery charger for electric vehicles (EVs) with innovative operation modes is presented in this paper. The proposed EV fast battery charger is based on a dual-stage power converter (ac-dc and dc-dc) sharing the same dc-link. The ac-dc stage is used as interface between the power grid and the dc-link; it is composed by the para...