Random Noise
Mostrando 1-12 de 116 artigos, teses e dissertações.
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1. Evaluation of OFDM Channel Sounding Techniques with Three Modulation Sequences
Abstract This paper presents an evaluation of multicarrier channel sounding techniques using different random and pseudo-random sequences to modulate the OFDM sounding signal. The Random (Rand), Pseudo-Noise (PN) and Zadoff-Chu (ZC) were tested, both in laboratory simulations and in field measurements. For the laboratory simulations Matlab routines were used
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 11/11/2019
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2. The efficacy and safety of multiple sessions of multisite transcranial random noise stimulation in treating chronic tinnitus
Resumo Introdução: Tem sido relatado que a estimulação transcraniana por ruído aleatório é um tipo mais eficaz e seguro de técnica de estimulação elétrica no alívio dos sintomas do zumbido. O protocolo multissítio da estimulação transcraniana por ruído aleatório mostrou efeitos favoráveis adicionais. Objetivo: Discutir o papel da aplicaç
Braz. j. otorhinolaryngol.. Publicado em: 07/11/2019
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3. Influence of the socieconomic level on the temporal resolution hearing skills in adults
RESUMO Objetivo: investigar a influência do nível socioeconômico na habilidade auditiva de resolução temporal de adultos. Métodos: a amostra foi composta por 48 sujeitos na faixa-etária de 18 a 50 anos, (X = 25,40 ± 7,36) divididos por estratos socioeconômicos em três grupos: G1: 11 sujeitos no nível A; G2: 19 no B1 e B2 e G3: 18 no C1, C2, D e
Rev. CEFAC. Publicado em: 28/10/2019
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4. Value of genomics in breeding objectives for beef cattle
ABSTRACT The objective of this research was to discern the contribution of genomic information to multiple-trait breeding objectives and thus understand the economic value of that information. True genetic values were simulated for each of n, possibly correlated, traits. These true genetic values, combined with uncorrelated random noise, resulted in both gen
R. Bras. Zootec.. Publicado em: 2016-12
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5. The Control of Asymmetric Rolling Missiles Based on Improved Trajectory Linearization Control Method
ABSTRACT According to motion characteristic of an asymmetric rolling missile with damage fin, a three-channel controlled model is established. The controller which is used to realize non-linear tracking and decoupling control of the roll and angle motion is introduced based on an improved trajectory linearization control method. The improved method is compos
J. Aerosp. Technol. Manag.. Publicado em: 2016-09
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6. Calculation of Aircraft Target's Single-Pulse Detection Probability
ABSTRACT: The original radar cross section data or some rough models are often used to estimate a given aircraft target detection probability. The calculation results may not be very accurate as targets are different from one another and the real radar detection process is complex. A new method for radar cross section model generation is proposed and it take
J. Aerosp. Technol. Manag.. Publicado em: 2015-09
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7. Critérios de normalidade dos testes de resolução temporal: random gap detection test e gaps-in-noise
OBJETIVO: avaliar a resolução temporal em indivíduos audiologicamente normais entre 20 e 60 anos. MÉTODOS: 40 indivíduos de ambos os sexos, de 20 aos 60 anos de idade, divididos em quatro grupos etários contendo 10 indivíduos em cada grupo: Grupo I de 20 a 30 anos; Grupo II de 31 a 40 anos; Grupo III de 41 a 50 anos e Grupo IV de 51 a 60. Todos foram
Rev. CEFAC. Publicado em: 2015-06
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8. Sensitivity Analysis of the Effectiveness of Tuned Mass Dampers to Reduce the Wind-Induced Torsional Responses
Abstract Use of Tuned Mass Dampers (TMDs) to reduce the wind-induced torsional response of structures has been investigated in the literature by assuming that the wind excitations can be approximated by harmonic forces or white noise random processes; however, such an assumption is not realistic. Further, wind load effects are correlated. This study is focus
Lat. Am. j. solids struct.. Publicado em: 2015
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9. Molecular dynamic study of the jet noise about the micro-scale tube
This paper studies the two-dimensional micro-scale molecular simulations of the jet flow using Lagrange discrete systems and adopting Andresen flexible constraint mechanism. At the effects of different excitation conditions and boundary conditions, the low Mach number flow field and sound field are obtained, and characteristic results are given. At the jet f
Matéria (Rio J.). Publicado em: 2014-12
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10. Effects of auditory training in individuals with high-frequency hearing loss
OBJECTIVE: To determine the effects of a formal auditory training program on the behavioral, electrophysiological and subjective aspects of auditory function in individuals with bilateral high-frequency hearing loss.
Clinics. Publicado em: 2014
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11. Determining the Fixed Pattern Noise of a CMOS Sensor: Improving the Sensibility of Autonomous Star Trackers
ABSTRACT: Autonomous star trackers are optical-electronic devices used for attitude determination of artificial satellites, having as a reference for this computation the positions of stars. There is one autonomous star tracker in development at the Aerospace Electronics Division of the Brazilian National Institute for Space Research. The autonomous star tra
J. Aerosp. Technol. Manag.. Publicado em: 2013-06
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12. Resolução temporal: procedimentos e parâmetros de avaliação em escolares
A resolução temporal permite identificação de pequenas diferenças acústicas nos aspectos segmentais da fala e pode ser avaliada por meio do Random Gap Detection Test (RGDT) e Gaps-In-Noise Test (GIN), os quais possuem diferentes parâmetros acústicos. OBJETIVO: Comparar o desempenho de escolares sem dificuldades de aprendizagem e/ou queixas auditivas,
Braz. j. otorhinolaryngol.. Publicado em: 2013-06