Power Estimation
Mostrando 1-12 de 149 artigos, teses e dissertações.
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1. Estimation and Mapping of the Received Power Level of Digital Signals TV Using Spatial Interpolation Methods
Abstract The signal digitization process of the open television system is still in progress, therefore, the study of the digital signal propagation has great importance so that broadcasters can develop and improve the transmission service. The field measurement of digital signal parameters is one of the most reliable means to analyze the signal propagation i
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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2. Efficient Low-Complexity Optimized Channel Estimating Methods for OFDM-Based Low-Voltage Broadband Power Line Communication Systems
Abstract Broadband Power Line Communication (BB-PLC) technology enables data transmission for smart grid applications. Nevertheless, channel equalizers are required in the receiver to estimate and compensate for the nonlinear time-variant impulse response and noise interference effects introduced by the BB-PLC channel. In this paper, we append the Particle S
Journal of Microwaves, Optoelectronics and Electromagnetic Applications. Publicado em: 2022
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3. Estimation of Air Temperature Using Climate Factors in Brazilian Sugarcane Regions
Resumo Este estudo visava estimar as temperaturas mínimas e máximas mensais do ar nas regiões canavieiras do Brasil. Uma série histórica de 30 anos (1988-2018) de temperaturas máximas (Tmax) e mínimas (Tmin) do ar da plataforma da NASA/POWER foi utilizada para 62 locais que produzem cana-de-açúcar no Brasil. A regressão linear múltipla foi utiliza
Revista Brasileira de Meteorologia. Publicado em: 2022
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4. Intraocular lens power estimation for future emmetropia in pediatric cataract surgery
RESUMO Objetivo: Criar modelos, em catarata pediátrica, para estimar valores futuros de ceratometria e comprimento axial, com base na ceratometria e no comprimento axial medidos na cirurgia, para previsão do poder da lente intraocular para emetropia em idades futuras. Métodos: Olhos com catarata bilateral, ceratometria e comprimento axial medidos na cir
Arquivos Brasileiros de Oftalmologia. Publicado em: 2022
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5. Mathematical Analysis and Improvement of the Maximum Spatial Eigenfilter for Direction of Arrival Estimation
Abstract Maximum spatial eigenfiltering improves the accuracy of maximum likelihood direction-of-arrival estimators for closely-spaced signal sources but may interchangeably attenuate widely-spaced signal sources, producing a severe performance degradation. Although this behavior has been observed experimentally, it still lacks a mathematical explanation. In
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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6. ACCURACY OF GENETIC PARAMETERS ESTIMATION AND PREDICTION OF GENOTYPIC VALUES IN EUCALYPTUS USING DIFFERENT PLOT TYPES
ABSTRACT A suitable experimental design should control the environmental effect and be capable of discriminating genotypes. Two clonal tests of Eucalyptus were planted side by side in a randomized block design with the same 32 treatments under two different plot designs. The first trial was designed with five plants per plot (linear plot, LP) and six block r
CERNE. Publicado em: 2020-12
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7. Elaboração e validação de uma medida para avaliar o conhecimento de médicos de atenção primária do Brasil sobre recomendação nutricional para controle da hipertensão
Resumo Introdução Médicos da Atenção Primária à Saúde têm papel primordial no aconselhamento nutricional para reduzir a morbidade e a mortalidade relacionadas à hipertensão. A literatura é escassa em instrumentos validados para o Brasil que avaliam o conhecimento com base em evidências desses profissionais. Objetivo Elaborar uma medida para av
Cad. saúde colet.. Publicado em: 25/11/2019
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8. Age estimation by pulp/tooth area ratio in anterior teeth using cone-beam computed tomography: comparison of four teeth
Abstract Objectives Age estimation is one of the most important factors in forensic medicine. Measuring secondary dentin deposition using cone-beam computed tomography images is an easy and noninvasive method. The aim of this study was to evaluate cone-beam computed tomography images as a reliable method to estimate chronological age by pulp/teeth ratio in
J. Appl. Oral Sci.. Publicado em: 12/08/2019
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9. Lealtad Democrática de los Partidos de Oposición en América Latina (1978-2010): Una Explicación Institucionalista
RESUMO A pergunta central deste artigo é: sob que condições os partidos de oposição latino-americanos são leais ou desleais para com a democracia? Procurando dar resposta a esta questão, espera-se contribuir para a construção de uma teoria da lealdade democrática da oposição partidária para a América Latina pós-ditadura militar (1978-2010). Pa
Dados. Publicado em: 20/05/2019
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10. Robust volumetric models for supporting the management of secondary forest stands in the Southern Brazilian Atlantic Forest
Abstract The majority of Atlantic Forest fragments in Southern Brazil are second-growth forests dominated by fast-growing species with considerable market-value timber. Nevertheless, volume prediction models are scarce, especially to estimate tree total volume (i.e., stem plus branches). This study approached the issue through the following aims: to fit and
An. Acad. Bras. Ciênc.. Publicado em: 25/10/2018
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11. Leaf Area Estimate of Erythroxylum simonis Plowman by Linear Dimensions
ABSTRACT This research aimed to determine an equation to estimate the leaf area of Erythroxylum simonis using the length and width of leaf blades. Two hundred leaf blades of this species were collected in Mata do Pau-Ferro, a State Park located in Areia, PB, Brazil. Regression analyses were used to determine the estimation equations. The linear, linear with
Floresta Ambient.. Publicado em: 18/06/2018
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12. Models for leaf area estimation in dwarf pigeon pea by leaf dimensions
ABSTRACT This study aims to determine the most suitable model to estimate the leaf area of dwarf pigeon pea in function of the leaf central leaflet dimension. Six samplings of 200 leaves were performed in the first experiment, at 36, 42, 50, 56, 64, and 72 days after emergence (DAE). In the second experiment, seven samplings of 200 leaves were performed at 2
Bragantia. Publicado em: 12/03/2018