Low Coherence
Mostrando 1-12 de 63 artigos, teses e dissertações.
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1. Low-Overhead Low-Complexity Carrier Phase Recovery Technique for Coherent Multi-Band OFDM-Based Superchannel Systems Enabled by Optical Frequency Combs
Abstract In this paper, we have designed a low-overhead low-complexity carrier phase tracking scheme for OFDM-based superchannel transmission system enabled by optical frequency combs. In this scheme, taking advantage of the broadband phase coherence provided by optical frequency combs among the OFDM-bands, the carrier phase retrieved from pilot-subcarriers
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2021-03
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2. Impact of sense of coherence on oral health-related quality of life among Brazilian adults
Abstract It has been postulated that oral health-related quality of life (OHRQoL) may be affected by the sense of coherence (SOC), but there are no epidemiological studies investigating this association in Brazilian adults. The present study was conducted among adults of a mid-sized Brazilian city, with the aim of looking into this association. The probabili
Braz. oral res.. Publicado em: 28/10/2019
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3. Effects of small hydropower plants in cascade arrangement on the discharge cyclic patterns
RESUMO Por assumir que os impactos nos regimes naturais de vazão de Pequenas Centrais Hidrelétricas (PCHs) são desprezíveis, os licenciamentos ambientais para esses empreendimentos são relativamente fáceis de serem obtidos. Contudo, estudos recentes têm mostrado que a operação de PCHs pode afetar as condições naturais de escoamento especialmente q
RBRH. Publicado em: 18/07/2019
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4. Validation of the Catherine Bergego Scale in patients with unilateral spatial neglect after stroke
RESUMO. A Escala de Catherine Bergego (CBS) é uma escala para avaliar o impacto da negligência espacial unilateral (USN) no cotidiano de pacientes após AVC. Objetivo: Não há validação da CBS para população brasileira e o objetivo deste estudo foi avaliar a confiabilidade e compreensão da versão em português da CBS para pacientes com USN após AV
Dement. neuropsychol.. Publicado em: 2019-03
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5. Optical coherence tomography angiography findings in malignant hypertensive retinopathy
RESUMO Um homem de 33 anos apresentou-se à nossa clínica com baixa visão em ambos os olhos que começou uma semana antes. A acuidade visual foi de 20/63 no olho direito e 20/50 no olho esquerdo. O exame de fundo de olho revelou sinais de retinopatia hipertensiva; então, adotou-se uma abordagem multidisciplinar para o diagnóstico e tratamento desse pacie
Arq. Bras. Oftalmol.. Publicado em: 2019-02
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6. Investigating cardiolocomotor synchronization during running in trained and untrained males
Introduction This study aims at investigating the coupling of the cardiac and locomotor systems during running in trained and untrained males. Methods Sixteen healthy young males subjects were submitted to an anthropometric evaluation, followed by a treadmill test at 70% to 75% of heart rate reserve. Based on the average velocity, they were divided into two
Res. Biomed. Eng.. Publicado em: 2015-04
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7. Coherencia curricular y oportunidades para aprender Ciencias
We obtain curriculum coherence between opportunities to learn scientific skills offered in a Chilean textbook and those offered in the classroom about the concept of force in a fifth grade classroom. We performed a discourse analysis of the lesson unit and the classroom activities to obtain content matrices for the concepts involved and the scientific skills
Ciênc. educ. (Bauru). Publicado em: 2014-12
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8. Prediction of Friction Stir Welding defect-free joints of AISI 304 austenitic stainless steel through axial force profile understanding
Friction Stir Welding (FSW) joints of AISI 304 austenitic stainless steel (304 SS) using position controlled mode were investigated in order to understand and relate axial force behavior to welding quality. Joints were produced using two tools and four combinations of specific parameters. The results showed coherence between the axial force profiles and the
Mat. Res.. Publicado em: 2014-10
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9. Rice detector: proposal of a novel objective response detection technique
INTRODUCTION: The detection of the somatosensory response (SR) is an important tool for the neurophysiological evaluation in the intra and post-operative period of some vascular and spine surgeries. Particularly, the SR identification with a maximum false positive ratio by means of Objective Response Detection (ORD) techniques could lead to a less subjective
Rev. Bras. Eng. Bioméd.. Publicado em: 2013-12
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10. Explorando conjuntos de dados volumétricos multidimensionais variantes no tempo usando projeções / Exploring time-varying multidimensional volumetric datasets using projections
The area of volume visualization encompasses a set of techniques used for representation, manipulation and display of data associated with a region of a volume, thus enabling the exploration and understanding of the interior of three-dimensional objects. However, some limitations are still encountered in this area. For example, the simultaneous exploration o
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/09/2012
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11. ANÁLISE TEXTUAL DE PRODUÇÕES AUTORREFLEXIVAS DE ALUNOS DE PEDAGOGIA: INTERFACE SOCIOCOGNITIVA DOS LETRAMENTOS ACADÊMICOS MÁRCIA
Although reading and writing are essential practices to foster learning and disseminate culture, they have been the subject of recurring debate and criticism in Brazil, not only as a result of low rates achieved in education statistics, but also because of the significant weaknesses faced by citizens in the exercise of social practices mediated by written te
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/03/2012
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12. Distributed memory organization with support for data migration for noc-based MPSOCS / Distributed memory organization with support for data migration for noc-based MPSOCS
The evolution in the deployment of semiconductor technology has enabled the development of System-on-Chip (SoCs) that integrate several processing elements (PEs) and memory modules in a single chip. SoCs that integrate several PEs are referred as Multiprocessor System-on-Chip (MPSoCs). As the number of PEs increases in an MPSoC, techniques that present low e
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 2012