Spatial Power
Mostrando 1-12 de 144 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. The evaluation of a surgery and the short-term benefits of a new active bone conduction hearing implant - the Osia®
Resumo Introdução A medicina moderna oferece um amplo espectro de diferentes aparelhos auditivos, e implantes de condução óssea estão entre eles. Objetivo Apresentação dos resultados do uso de um novo implante auditivo de condução óssea ativa - o Osia® e sua comparação com o conhecido sistema transcutâneo passivo - o sistema Baha® Attract.
Brazilian Journal of Otorhinolaryngology. Publicado em: 2022
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3. 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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4. Hypotension and Bradycardia Produced by Transthoracic Application of Low-Intensity Ultrasound Therapy in Hearts of Healthy Rats - A Preclinical Study
Abstract Objective: To investigate the cardiovascular effects produced by transthoracic application of low-intensity pulsed ultrasound therapy (LIPUST). Methods: Three-month-old male Wistar rats (± 300 g, N=16) were randomly allocated in two groups, namely SHAM (control group, faked procedures) and UST (animals treated with LIPUST). These animals, under a
Braz. J. Cardiovasc. Surg.. Publicado em: 2020-10
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5. SIMULATION AND EXPERIMENTAL INVESTIGATION OF POWER CONSUMPTION, GAS DISPERSION AND MASS TRANSFER COEFFICIENT IN A MULTI-PHASE STIRRED BIOREACTOR
Abstract Bio-oxidation leaching of refractory gold concentrate was carried out in a typical gas-liquid-solid three-phase stirred bioreactor. The bacteria, which adhered to solid particle surfaces and spread over the liquid phase, require sufficient oxygen and nutrient of carbon and nitrogen, and then the mass transfer rate should be considered. However, the
Braz. J. Chem. Eng.. Publicado em: 13/01/2020
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6. Grupos econômicos e acumulação urbana na cidade do Rio de Janeiro: Odebrecht e Carvalho Hosken
Resumo As estratégias de acumulação e de poder dos grupos econômicos são centrais para o debate sobre a economia política urbana contemporânea. Sua influência na produção desigual do espaço urbano e na sociedade em geral tem sido cada vez mais proeminente. A partir do referencial analítico das teorias não convencionais sobre grupos econômicos,
Rev. Bras. Estud. Urbanos Reg.. Publicado em: 05/12/2019
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7. A power law study of the edge influence on the perceived filling-in brightness magnitude
Abstract: Background: Edge plays a special role in spatial perception and as well as in determining the brightness of a surface within borders. The aim of our study was to measure threshold brightness in different levels of edges thickness. Methods: Steven's power law for circles modulating in luminance was estimated for 30 subjects (mean age 24 years, SD
Psicol. Reflex. Crit.. Publicado em: 14/10/2019
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8. Investigation of the effect of nozzle design on rheological bioprinting properties using computational fluid dynamics
ABSTRACT Bioprinting is the utilization of techniques derived from three-dimensional printing to generate complex biological structures which may replace natural tissues or organs. It employs high spatial resolution deposition of different cell types, growth factors and biomaterials. Those together form bioinks, which are the bioprinting inputs, analogously
Matéria (Rio J.). Publicado em: 16/09/2019
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9. Aqui é a nossa praia! Apropriação e uso da avenida paulista no contexto de políticas de desenvolvimento urbano
Resumo Este artigo analisa os argumentos em torno da experiência de ocupação e uso da Paulista Aberta para avançar uma compreensão acerca de políticas de desenvolvimento urbano e seus efeitos. Seguimos a analítica arqueológica inspirada em Michel Foucault, abordagem que se debruça sobre discursos de forma a compreender as formações ali presentes a
urbe, Rev. Bras. Gest. Urbana. Publicado em: 09/09/2019
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10. Hydric and Edaphic Influence on Floristic Composition in an Altered Riparian Area
ABSTRACT Alteration of a natural ecosystem can physically, chemically and biologically affect a determined area. Therefore, this study aimed to evaluate the relation between the hydrology, soils and vegetation existing in an area changed by the implantation of a Hydroeletric Power Plant (HPP) in the municipality of Roque Gonzales, Rio Grande do Sul state. Th
Floresta Ambient.. Publicado em: 23/05/2019
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11. Alveolar distribution in french rolls made using taro mucilage
Resumo Os emulsionantes são responsáveis pela formação de uma massa que contribui para a retenção de glúten em alvéolos, o gás produzido por levedura, aumentando assim o volume e a suavidade do pão. Há indícios de que os hidrocoloides, como a mucosa de taro (Colocasia esculenta), podem apresentar características semelhantes às dos emulsionantes
Braz. J. Food Technol.. Publicado em: 16/05/2019
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12. Three-dimensional numerical simulation of flow in vertical slot fishways: validation of the model and characterization of the flow
RESUMO As escadas para peixes com ranhuras verticais permitem que ocorra a dissipação da energia do escoamento em função da forma da bacia, dos defletores, da declividade longitudinal e da largura da ranhura vertical. Estas estruturas devem apresentar padrões médios e turbulentos do escoamento compatíveis com os peixes que irão transpô-la. Tipicame
RBRH. Publicado em: 11/04/2019