Statistical Distributions
Mostrando 1-12 de 186 artigos, teses e dissertações.
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1. Evaluation of Polymorphisms in IL8 and IL16 Genes in Patients with Acute Coronary Syndrome
Abstract Background: Acute coronary syndrome (ACS) is a cardiovascular disease caused by obstruction of coronary arteries by atheromatous plaque. Susceptibility to this disease may be related to genetic variations, such as single nucleotide polymorphisms (SNPs). Objective: In this study, we evaluated the relationship between SNPs in IL8 (rs4073; -251 A/T)
Int. J. Cardiovasc. Sci.. Publicado em: 2020-05
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2. Modeling residual biomass from mechanized wood harvesting with data measured by forest harvester
Abstract: The lack of accurate models for estimating residual biomass in wood harvesting operations results in underutilization of this co-product by forestry companies. Due to the lack of this information, forestry operations planning, such as chipping and transport logistics, are influenced, with a consequent increase in costs. Thereby, the aim of this stu
An. Acad. Bras. Ciênc.. Publicado em: 02/12/2019
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3. SPATIAL VARIABILITY MAPPING OF SUGARCANE QUALITATIVE ATTRIBUTES
ABSTRACT Spatial variability evaluation of qualitative attributes can be used as an excellent strategy to design forms of intervention that result in better crop profitability for some agricultural crops, for example, sugarcane. Based on the assumption that qualitative attributes of sugarcane present spatial variability and their distributions along the stem
Eng. Agríc.. Publicado em: 09/09/2019
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4. Uma Metodologia para Análise da Distribuição de Contagem dos Picos de Tensão de Reignição para Avaliação da Estabilidade do Processo GMAW Curto-Circuito
Resumo A estabilidade do arco tem sido estudada através de análises estatísticas obtidas dos sinais de tensão de arco e corrente de soldagem. Histogramas e cálculo de estatísticas dos parâmetros tempo de arco aberto e tempo de curto circuito são meios de avaliação da estabilidade dos processos de soldagem. Contudo, estudos relacionados aos picos de
Soldag. insp.. Publicado em: 09/05/2019
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5. Diseño y Evaluación de una Trayectoria Hipotética de Aprendizaje para Intervalos de Confianza basada en Simulación y Datos Reales
Abstract This article discusses the design of a hypothetical learning trajectory to introduce the confidence intervals in a basic university course, from an informal perspective based on the use of data obtained from surveys and samples simulation. The trajectory consists of four activities and was evaluated as part of a first improvement cycle with a group
Bolema. Publicado em: 2019-04
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6. Treadmill training and kinesiotherapy versus conventional physiotherapy in Parkinson’s disease: a pragmatic study
Resumo Introdução: A fisioterapia tem sido apontada na literatura como um importante tratamento para indivíduos com doença de Parkinson (DP) para melhorar a capacidade funcional. Pouco se discute sobre o ambiente da prática fisioterapêutica para essa população. Objetivo: Avaliar pragmaticamente os efeitos de dois protocolos fisioterapêuticos: Fi
Fisioter. mov.. Publicado em: 25/02/2019
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7. Vegetation Image as Bayesian Predictor for Radio Propagation in Complex Environments Using Unscented Transform
Abstract Vegetation is considered a complex environment for analysis of scattering and attenuation in radio propagation phenomena. Satellite image processing can improve planning of radio systems with a vegetation attenuation predictor. In this research, the prediction is based on the correlation of more than 56% between RGB pixel values and vegetation atten
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2018-06
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8. Analysis of the immunological biomarker profile during acute Zika virus infection reveals the overexpression of CXCL10, a chemokine linked to neuronal damage
BACKGROUND Infection with Zika virus (ZIKV) manifests in a broad spectrum of disease ranging from mild illness to severe neurological complications and little is known about Zika immunopathogenesis. OBJECTIVES To define the immunologic biomarkers that correlate with acute ZIKV infection. METHODS We characterized the levels of circulating cytokines, chemok
Mem. Inst. Oswaldo Cruz. Publicado em: 14/05/2018
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9. How to analyze germination of species with empty seeds using contemporary statistical methods?
ABSTRACT Statistical analysis is considered an important tool for scientific studies, including those on seeds. However, seed scientists and statisticians often disagree on the nature of variables addressed in germination experiments. Statisticians consider the number of germinated seeds to be a binomially distributed variable, whereas seed scientists conver
Acta Bot. Bras.. Publicado em: 15/02/2018
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10. MODELING PARTICLE SIZE DISTRIBUTION IN HETEROGENEOUS POLYMERIZATION SYSTEMS USING MULTIMODAL LOGNORMAL FUNCTION
Abstract This work evaluates the usage of the multimodal lognormal function to describe Particle Size Distributions (PSD) of emulsion and suspension polymerization processes, including continuous reactions with particle re-nucleation leading to complex multimodal PSDs. A global optimization algorithm, namely Particle Swarm Optimization (PSO), was used for pa
Braz. J. Chem. Eng.. Publicado em: 2016-09
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11. Statistical Evaluation of Measured Rain Attenuation in Tropical Climate and Comparison with Prediction Models
Abstract Substantial modifications have been made to the expressions for calculating distance factor and extrapolation techniques in the latest ITU-R P.530-14. However, its performance has not been rigorously evaluated in the tropical and equatorial climates. In this article, the new ITU-R method and three prediction models are validated using measurement da
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2016-06
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12. Quality of life and informal labor among elderly persons in an intermediate Colombian city, 2012-2013
Abstract Objective: Describe the quality of life of elderly informal workers in an intermediate Colombian city. Method: A descriptive study of 320 randomly selected informal workers aged older than 18 from Manizales was performed. A sub-sample of 153 people aged older than 50, representing 47.8 percent of the study population, was performed. Two instrume
Rev. bras. geriatr. gerontol.. Publicado em: 2016-06