A5023714534- Structural Health Monitoring Techniques
- Power Systems Fault Detection
- Sperm and Testicular Function
- Infrastructure Maintenance and Monitoring
- Vibration and Dynamic Analysis
- Soil Management and Crop Yield
- Reproductive Biology and Fertility
- Power Line Inspection Robots
- Advanced Image Fusion Techniques
- Air Quality Monitoring and Forecasting
- Concrete Corrosion and Durability
- Geotechnical Engineering and Underground Structures
- Antenna Design and Analysis
- Media and Communication Studies
- Digital Imaging for Blood Diseases
- Genetic and phenotypic traits in livestock
- Academic Research in Diverse Fields
- Multi-Criteria Decision Making
- Urban Arborization and Environmental Studies
- Sugarcane Cultivation and Processing
- Electromagnetic Compatibility and Noise Suppression
- Sexual Differentiation and Disorders
- Remote-Sensing Image Classification
- Media Studies and Communication
- Indoor and Outdoor Localization Technologies
Agência Nacional de Energia Elétrica
2020-2021
Universidade Federal Rural do Semi-Árido
2018
Universidade Federal do Paraná
2000
The collapse of overhead power line guyed towers is one the leading causes grid failures, subjecting electricity companies to pay considerable, high-value fines. In this way, current work proposes a novel and complete framework for remote monitoring mechanical stresses in towers. method comprises mesh network data forwarding neural networks improve performance Low-Power Lossy Networks. also considers use multiple sensors sensor fusion technique. As result, risk cable reduces, due preventive...
This paper presents the development of a methodology to detect and evaluate faults in cable-stayed towers, which are part infrastructure Brazil's interconnected electrical system. The proposed method increases system reliability minimizes risk service failure tower collapse through introduction predictive maintenance methods based on artificial intelligence, will ultimately benefit end consumer. signal processing interpretation machine learning approach, where vibration is acquired from...
This paper introduces a new hyperspectral image denoising method called Non-local Convolutional Neural Network Denoiser (NL-CNND). The technique exploits data in four bands adjacent to the target one as additional information for restoring process, and it uses pre-denoising step based on BM4D. All paired with their pre-denoised versions second feed Network. To network generalization, of inputs is noise level input image, allowing single model work different levels. restoration overcomes...
RESUMO Comparou-se a eficiência de protocolos para indução estro em cutias. Em cinco fêmeas, foram administradas duas doses cloprostenol (5µg) com intervalo nove dias, via intraperitoneal; outras cinco, administraram-se 30µg análogo do hormônio liberador gonadotrofinas (GnRH), intravulvar, seguidos 5µg cloprostenol, intraperitoneal, após sete dias e, mais dois nova dose GnRH. A cada três ciclicidade reprodutiva dos animais foi monitorada, por meio coleta sangue, dosagem hormonal,...
This article proposes a methodology for monitoring the structural stability of each tower an electric power transmission line through sensor measurements which estimates different situations that may indicate need intervention to prevent structure collapsing. The extended Kalman filter was adopted predict failures, considering fusion techniques such as displacements upper central position above certain limits. load stay cables is calculated from natural frequencies, are determined by...
This work presents a new unit cell electromagnetic bandgap (EBG) design based on HoneyComb geometry (HCPBG). The HCPBG takes uniplanar (UCPBG—uniplanar compact PBG) as reference and follows similar methods for defining geometric parameters. structure’s advantages consist of reduced occupied printed circuit board area flexible rejection band properties. In addition, rotation slight modification in the allow changing profile attenuation frequency range. paper also reconfigurable filter...
Internet of Things (IoT) applications relies on sensors to understand and control physical environments. Sensors are subject numerous potential faults sources inaccuracy, including noise, drift, biases, outliers, missing data. Errors in sensor reading potentially lead poor quality results applications, diminished accuracy for inferences, incorrect decisions. The error consequences range from wasted resources sub-optimal decisions monitoring calamitous actions critical applications. This work...
Na crioconservação de sêmen canino, técnicas congelamento precisam ser otimizadas com a finalidade maximizar viabilidade do após descongelação. O ejaculado um animal foi congelado em palhetas 0,5ml utilizando como diluidores o Tris-citrato-frutose, Tris-citrato-glucose, 6% glicerol no volume final, e diluente Merk. As amostras foram avaliadas imediatamente descongelação quanto à motilidade integridade acrossomas. mais altas taxas acrossomal obtidas Tris-citratoglucose, havendo diferenças...
Power grid networks eventually require guyed towers as support structures for transmission lines. In these cases, the cables that structure can experience long-term degradation a result of environmental forces. Long-term in tower collapse leading to power outages essential public services. We propose Structure Health Monitor (SHM) system improve line reliability. It is based on data fusion using machine learning algorithms monitor acceleration signals collected from multiple locations allow...
A resistividade eletrica e um parâmetro amplamente utilizado na avaliacao da corrosividade dos solos. Entretanto, algumas metodologias de analise em laboratorio tem divergencia nos procedimentos resultados obtidos, o que pode impactar correta propriedade sua consequente correlacao com a resistencia corrosao. Neste estudo foi realizado uma revisao ensaios solo propostos pelos adotados pelas normas ABNT NBR 16254-1:2014 (Anexo C), ASTM G-187-15 modificada pela adocao calculos indices fisicos...
Nesse estudo foi utilizado a tecnica de espectroscopia impedância eletroquimica (EIS) para avaliar resistividade do solo torres linhas transmissao e os resultados comparados com ensaios conduzidos pela norma ASTM G187. Tambem avaliada variacao dos frequencia. Os calculados pelo valor real na frequencia onde encontrado o menor ângulo fase, faixa kHz, foram estatisticamente iguais aos encontrados metodo normatizado. Alem disso, obtidos 10 porem mesmo nao aconteceu um solos 1,0 kHz.