Hardware
Mostrando 25-36 de 1010 artigos, teses e dissertações.
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25. Alternative class III distributed polysomnography system
Abstract Introduction Impairment of sleep quality directly increases the risk of heart attack, obesity, and stroke, among other conditions, which makes polysomnography (PSG) an important public health tool. However, the inherent problems with PSG render the correct diagnosis of sleep diseases a difficult task. As a novel alternative to the class II PSG sys
Res. Biomed. Eng.. Publicado em: 28/05/2018
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26. Compensation technique for environmental and light source power variations applied in a polymer optical fiber curvature sensor for wearable devices
Abstract Introduction Polymer optical fibers (POF) are lightweight, present high elastic strain limits, fracture toughness, flexibility in bend, and are not influenced by electromagnetic fields. These characteristics enable the application of POF as curvature sensor and can overcome the limitations of the conventional technologies, especially for wearable a
Res. Biomed. Eng.. Publicado em: 05/03/2018
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27. Modeling and FPGA-based implementation of an efficient and simple envelope detector using a Hilbert Transform FIR filter for ultrasound imaging applications
Abstract Introduction Although the envelope detection is a widely used method in medical ultrasound (US) imaging to demodulate the amplitude of the received echo signal before any back-end processing, novel hardware-based approaches have been proposed for reducing its computational cost and complexity. In this paper, we present the modeling and FPGA impleme
Res. Biomed. Eng.. Publicado em: 15/01/2018
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28. ASSEMBLY OF A REMOTELY PILOTED AIRCRAFT OF LOW COST APPLIED TO AGRICULTURE
ABSTRACT: The remotely piloted aircraft (RPA) have great applicability in agriculture. Although it is a technology that has been developed for many years, in the field of agriculture it passed unnoticed for a long time. The high cost of acquisition is still a limiting factor for small and medium-sized farmers. In this way, this study had as objective to deve
Eng. Agríc.. Publicado em: 2017-12
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29. Aprendizado sobre automação de bibliotecas baseado em dispositivos móveis: a produção de vídeos pelos discentes do Curso de Biblioteconomia da Universidade Federal do Cariri
Resumo A produção de vídeos para aprendizagem tem se evidenciado ao longo dos últimos anos, principalmente quando o assunto envolve aspectos relacionados à aplicação de hardware e software para automação de espaços. Nos Cursos de Biblioteconomia, a necessidade de aprendizagem prática voltada para o conhecimento dos requisitos para automação de b
Transinformação. Publicado em: 2017-12
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30. Biomolecular computers with multiple restriction enzymes
Abstract The development of conventional, silicon-based computers has several limitations, including some related to the Heisenberg uncertainty principle and the von Neumann “bottleneck”. Biomolecular computers based on DNA and proteins are largely free of these disadvantages and, along with quantum computers, are reasonable alternatives to their convent
Genet. Mol. Biol.. Publicado em: 23/10/2017
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31. Design of Ground Penetrating Radar Antenna for Detecting Soil Contamination at L-band Frequencies
Abstract Maintenance of oil pipelines is an issue of great concern for oil companies. Soil contamination is caused by oil leaks from underground pipelines. Ground penetrating radar (GPR) is a rapid and relatively inexpensive technique used for locating and characterizing soil contaminated sites without producing fractures and causing further migration of con
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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32. SmartCoM: Smart Consumption Management Architecture for Providing a User-Friendly Smart Home based on Metering and Computational Intelligence
Abstract With advances in information technology for health and wellness, Smart Home-based solution providers using Internet of Things (IoT) technologies, have increased in importance and become accepted as an alternative means of saving energy when based on Home Energy Management Systems (HEMS). This paper defines a modern architecture (SmartCoM), which is
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-09
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33. Reconstruction of gait biomechanical parameters using cyclograms and artificial neural networks
Abstract Introduction Historically, assessing the quality of human gait has been a difficult process. Advanced studies can be conducted using modern 3D systems. However, due to their high cost, usage of these 3D systems is still restricted to research environments. 2D systems offer simpler and more affordable solutions. Methods In this study, the gait of 4
Res. Biomed. Eng.. Publicado em: 17/08/2017
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34. Sistema photogate de seis canais analógicos para laboratórios didáticos de física
Descrevemos e disponibilizamos um sistema de chaves óticas (photogates) completo (hardware + software) para uso em laboratórios didáticos de física. Conjugamos diferentes abordagens propostas na literatura em um conjunto que oferece boa resolução temporal ( ≈ 1 ms), alto número de chaves óticas independentes (até seis canais), alta sensibilidade
Rev. Bras. Ensino Fís.. Publicado em: 03/08/2017
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35. LCL-T Resonant Converter Based on Dual Active Bridge Topology in Solar Energy Applications
ABSTRACT: Resonant LCL-T converter can operate as stable voltage source, being fed from current, for instance, the photovoltaic battery. It is shown that LCL-T resonant tank has intrinsic ability to convert stable AC current into stable AC voltage thus parametrically regulating output voltage at a fixed value. This mode of operation is made possible by the u
J. Aerosp. Technol. Manag.. Publicado em: 2017-06
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36. STUDYING STUDENT BEHAVIOR AND CHEMISTRY SKILL USING BROWSER-BASED TOOLS AND EYE-TRACKING HARDWARE
Browser-based tools were created to collect quantitative data about university student problem-solving skills. Three of these tools have been described: a word question tool that creates ideal gas law and stoichiometry questions using a set of complexity factors; a Lewis structure drawing tool that enables the user to draw a solution to an ion or molecule as
Quím. Nova. Publicado em: 2017-05