40 documents found, page 1 of 4
Techno-economic analysis of a novel hybrid wind-wave floating platform concept:...
Rodrigues, M.B.V.A.; Portillo, Juan C. C.; Henriques, João; Gato, Luís; Mendonça, Nuno P.ABSTRACT: This work focuses on the techno-economic analysis of a novel floating offshore hybrid wind-wave platform. Floating multi-purpose platforms can potentially reduce costs associated with floating offshore wind. This work is based on the OctaPlat, a barge-type hybrid wind-wave floating platform designed at Instituto Superior Técnico, University of Lisbon. The paper presents the concept and numerical model...
A Survey on Forensics and Compliance Auditing for Critical Infrastructure Prote...
Henriques, João; Caldeira, Filipe; Cruz, Tiago; Simões, PauloThe broadening dependency and reliance that modern societies have on essential services provided by Critical Infrastructures is increasing the relevance of their trustworthiness. However, Critical Infrastructures are attractive targets for cyberattacks, due to the potential for considerable impact, not just at the economic level but also in terms of physical damage and even loss of human life. Complementing tra...
Influence of data filtering and noise on the calibration of constitutive models...
Prates, Pedro; Pinto, José; Marques, João; Henriques, João; Pereira, André; Andrade-Campos, AntónioThis work focuses on predicting material parameters that describe the plastic behaviour of metallic sheets using the XGBoost machine learning algorithm, with a dual focus on the influence of data filtering and data noise. A dataset was populated with finite element simulation results of cruciform tensile tests, including strain field data during the test. Different noise levels were added to the strain-related ...
VForm-xSteels: virtual materials database
Andrade-Campos, António; Campos, Afonso; Henriques, João; Filho, Lucius; Túlio, Marcos; Conde, Mariana; Gonçalves, Mafalda; Prates, PedroNowadays, most of the product designs rely on the aid of simulation software, particularly Finite Element Analysis (FEA) programs. However, an accurate simulation requires a proper virtual/numerical material behavior reproduction, meaning a precise material characterization through constitutive models and their parameters. To numerically characterize a material, particularly a metal, (i) experimental tests, (ii...
A scalable smart lighting framework to save energy
Rebelo, João; Rodrigues, Ricardo; Henriques, João; Cardoso, Filipe; Wanzeller, Cristina; Caldeira, FilipeIn the past few decades, the urbanization area increased significantly, requiring enhanced services and applications to improve the lifestyle of its citizens. Lighting is one of the most relevant infrastructures due to its impact on modern societies, but it is also complex to manage them in cities since it involves a massive number of widespread posts and is costly as the result of the consumption of significan...
An IoT-Based Framework for Monitoring Photovoltaic Batteries
Sarmento, Gonçalo; Cardoso, Filipe; Mota, Mickael; Henriques, João; Abbasi, Maryam; Martins, Pedro; Wanzeller, Cristina; Caldeira, FilipeThe need for a more sustainable world is increasing the number of installations of photovoltaic systems including batteries as a way to postpone energy consumption when it is most needed. However, the chemical nature of batteries makes them unreliable and prompt to dangerous situations and can lead to a potential disaster, such as fires and explosions, in case the underline issues keep undetected for a long tim...
IoT-Based Monitoring System for Photovoltaic Battery Management
Sarmento, Gonçalo; Cardoso, Filipe; Mota, Mickael; Henriques, João; Abbasi, Maryam; Martins, Pedro; Wanzeller, Cristina; Caldeira, FilipeAs number of photovoltaic systems being installed is increasing, also many users are deciding to include batteries, and postpone the consumption of that energy when it is most needed. Moreover,a crucial issue can keep undetected for long time causing dangerous situation which can lead to a potential disaster. However, the chemical nature of batteries makes them unreliable and dangerous. In this risky scenario, ...
A forensics and compliance auditing framework for critical infrastructure prote...
Henriques, João; Caldeira, Filipe; Cruz, Tiago; Simões, PauloContemporary societies are increasingly dependent on products and services provided by Critical Infrastructure (CI) such as power plants, energy distribution networks, transportation systems and manufacturing facilities. Due to their nature, size and complexity, such CIs are often supported by Industrial Automation and Control Systems (IACS), which are in charge of managing assets and controlling everyday opera...
Candida auris in Intensive Care Setting: The First Case Reported in Portugal
Henriques, João; Mixão, Verónica; Cabrita, Joana; Duarte, Tiago Isidoro; Sequeira, Tânia; Cardoso, Sofia; Germano, Nuno; Dias, Liliana; Bento, LuísCandida auris is an opportunistic human pathogen that has rapidly spread to multiple countries and continents and has been associated with a high number of nosocomial outbreaks. Herein, we report the first case of C. auris in Portugal, which was associated with a patient transferred from Angola to an ICU in Portugal for liver transplantation after a SARS-CoV-2 infection. C. auris was isolated during the course ...
Candida auris in intensive care setting: the first case reported in Portugal
Henriques, João; Mixão, Verónica; Cabrita, Joana; Duarte, Tiago Isidoro; Sequeira, Tânia; Cardoso, Sofia; Germano, Nuno; Dias, Liliana; Bento, LuísCandida auris is an opportunistic human pathogen that has rapidly spread to multiple countries and continents and has been associated with a high number of nosocomial outbreaks. Herein, we report the first case of C. auris in Portugal, which was associated with a patient transferred from Angola to an ICU in Portugal for liver transplantation after a SARS-CoV-2 infection. C. auris was isolated during the course ...