A5065324136- Antenna Design and Analysis
- Microwave Engineering and Waveguides
- Advanced Antenna and Metasurface Technologies
- Antenna Design and Optimization
- Advanced Materials and Mechanics
- Business and Management Studies
- Gaze Tracking and Assistive Technology
- Academic Research in Diverse Fields
- Information Science and Libraries
- Healthcare during COVID-19 Pandemic
- Advanced Wireless Communication Techniques
- EEG and Brain-Computer Interfaces
- Power Line Communications and Noise
- Digital Accessibility for Disabilities
- Vagus Nerve Stimulation Research
- Autism Spectrum Disorder Research
- COVID-19 Digital Contact Tracing
- Cloud Computing and Resource Management
- Privacy, Security, and Data Protection
- Assistive Technology in Communication and Mobility
- Amyotrophic Lateral Sclerosis Research
- Blood donation and transfusion practices
- Subtitles and Audiovisual Media
- Physical Education and Gymnastics
- Millimeter-Wave Propagation and Modeling
Universidade Federal do Rio Grande do Norte
2012-2023
Universidade Federal de Santa Maria
2021
Hospital de Clínicas
2021
Universidade Federal de Minas Gerais
2021
The progressive diminishment of motor capacities due to Amyotrophic Lateral Sclerosis (ALS) causes a severe communication deficit. development Alternative Communication software aids ALS patients in overcoming issues and the detection signals plays big role this task. In paper, volunteer eye-blinking is proposed as human–computer interaction signal an intelligent Computer Vision detector was built for handling captured data real-time using generic webcam. eye-blink treated extension...
This paper presents the synthesis of multiband frequency selective surfaces (FSSs) using supervised machine learning (ML) with decision tree (DT) algorithm. The proposed FSS structure is composed an array metallic patches printed on a dielectric substrate for stopband spatial filtering microwave applications. shapes are based sunflower (helianthus annus) geometry. In first step, parametric analysis performed to investigate use different geometries, including those circular, annular and...
In this work, a new ultra wide band circular ring patch antenna is proposed for spectral sensing application as well the transmission and reception of radiofrequency in cognitive radio systems. The structure has simple design easy construction, making it reconfigurable by enabling or disabling parasitic elements coplanar to antenna. Simulation measurements results confirm good agreement adequate response frequency range from 3.1 GHz 10.6 GHz, terms reflection coefficient radiation pattern,...
Abstract This article presents the optimization process of a microstrip antenna designed to operate with ultra‐wideband applications. was accomplished by applying self organizing multiobjective genetic algorithm (GA) optimize geometry aspect ring monopole (a slit in ground plane) considering three objectives simultaneously (bandwidth, return loss and central frequency deviation). Each these are modeled as dependent two variables (the dimensions) used single weighted compound aggregate...
ABSTRACT A hybrid optimization technique is used to synthesize frequency selective surface (FSS) structures composed of periodic arrays integrated rings and dipole patch elements, printed on dielectric substrates, for microwave filtering applications. The based the combination genetic algorithms neural networks. This determine specific values resonant bandwidth from variations FSS structural parameters, such as element array dimensions. synthesized structure also analyzed using a fast...
The synthesis of a simple electronically reconfigurable annular ring monopole antenna using designing optimisation process based on particle swarm (PSO) and artificial bee colony (ABC) algorithms is proposed. Several dimensions are selected as objective functions PSO ABC their best solutions considered the optimised geometry. Two radio‐frequency p–i–n diodes, connecting feeding line to two microstrip stubs used change frequency response from ultra‐wideband (UWB), 3.1 10.6 GHz, narrowband...
Abstract This article presents a bandwidth optimization study of two coupled frequency selective surfaces (FSS).The is performed in steps. In the first step, genetic algorithm developed to synthesize single FSS crossed dipoles with resonant frequencies equal 9.5 and 10.5 GHz, be used broadside geometry, separated by an air gap. second particle swarm determine optimal value for gap length optimize geometry bandwidth. Prototypes are fabricated measured validate results structure. © 2012 Wiley...
In this paper a coplanar waveguide (CPW) fed ultra-wideband (UWB) circular ring monopole antenna with modified ground plane is proposed. The dimensions of the are obtained using genetic algorithm (GA) optimization procedure. To proof concept and validate design prototypes have been fabricated tested. A good agreement between numerical simulation experimental results. input reflection coefficient below −10 dB in frequency range 2.52 GHz to 12 GHz, which corresponds an impedance bandwidth...
A transfusão sanguínea é um procedimento complexo que envolve riscos, os quais podem ser minimizados com atividades para manter a qualidade dos processos. Para isso, faz-se necessário o estabelecimento de fluxos bem definidos melhorar processos e minimizar gastos desnecessários. O objetivo deste trabalho propor novo protocolo reserva hemocomponentes cirurgias em hospital universitário Recife-PE. Inicialmente, mapeou-se processo relacionado e, base das 511 solicitações sangue- STS analisadas...
Objective: to discuss whether the reproduction of “No Syphilis” Project regarding processing large scale personal data related health without consent holders would be possible in Portugal. Methods: analysis Brazilian, Portuguese, and European legislation on protection, with as a case study. Results: sensitive owner is, rule, prohibited by General Data Protection Regulation, however for reasons public interest field scientific research purposes is authorized, provided that fundamental...
A grande demanda por soluções para reabilitação de pacientes com deficiência ou limitações visuais tem motivado o desenvolvimento das tecnologias assistivas. Estas possibilitam aumento da qualidade vida dos através uma maior autonomia no seu cotidiano. Este artigo apresenta solução tecnologia assistiva aplicada na locomoção do paciente visual.

 O atual contexto de inovação tecnológica digital que a indústria 4.0 trouxe, gerando um gigantesco volume dados, traz novos desafios para comunicação interna das organizações. Os hospitais são instituições naturalmente complexas em virtude sua diversidade atividades, perfis profissionais, tipos públicos e regulamentações serem seguidas, sendo exemplo instituição com demandas gerenciamento dados larga escala. perfil organizacional dos universitários seu papel na sociedade, instigaram...
Este trabalho tem o objetivo de examinar conceitos e aspectos da Gerência do Conhecimento (GC) que possam contribuir no desenvolvimento ferramentas mais adaptadas para os desafios atuais Educação tecnológica (ET). A pode ser vista, essencialmente, como uma disciplina fornece subsídios projeto processos que, ao longo seus ciclos vida, se beneficiam extração formal automática conhecimento utilizado nos mesmos. idéia principal é a utilização deste base um funcionamento otimizado futuro. Um dos...
O trabalho em evidência tem como objetivo expor o desenvolvimento de um aplicativo Desktop que utiliza tecnologias web para a gravação e edição vídeos exames Nasofibrolaringoscopia Laringoscopia, bem emissão laudos digitais realização uma integração com servidor PACS. Nesse sentido, foram estudadas novas pudessem facilitar agilizar progresso da aplicação, além disponibilizar interface amigável. framework Electron web, CSS, HTML, JavaScript Node.js, atendem tais propósitos. contexto, OpenMed...
Introdução: O volume de informação técnico-científica produzida nas instituições saúde tem crescido exponencialmente; e reuni-las, armazená-las, recuperá-las facilitar seu acesso torna-se, então, um desafio. objetivo do trabalho é construir a modelagem descritiva Repositório Institucional (RI) Protocolos Cuidado Saúde que possa atender essa demanda ainda otimizar os processos melhorar qualidade assistencial nos hospitais universitários brasileiros. Métodos: Estudo híbrido produção pesquisa...