Simulation Statistics I
Mostrando 1-12 de 14 artigos, teses e dissertações.
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1. ECG Signals Classification Using Overlapping Variables to Detect Atrial Fibrillation
ABSTRACT In the present work a method for the detection of the cardiac pathology known as atrial fibrillation is proposed by calculating different information, statistics and other nonlinear measures over ECG signals. The original database contains records corresponding to patients who are diagnosed with this disease as well as healthy subjects. To formulate
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. Autoconfiança no manejo das intercorrências de saúde na escola: contribuições da simulação in situ
Objetivo analisar as contribuições da simulação in situ na autoconfiança de professores da educação infantil e fundamental I com relação ao manejo inicial das intercorrências de saúde na escola. Método estudo quase experimental, do tipo pré e pós-teste. Aplicou-se em 76 professores dois instrumentos pré e pós simulação in situ, os quais
Rev. Latino-Am. Enfermagem. Publicado em: 07/10/2019
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3. Numerical Simulation on the Radar Cross Section of Variable-Sweep Wing Aircraft
ABSTRACT: The influence of variable-sweep wing on the aircraft's radar cross section (RCS) characteristics has been studied to reduce the aircraft's RCS as well as its detection probability by the hostile radar. With the help of CATIA, a 3-D digital model of the variable-sweep wing aircraft is built to generate a series of digital grids. Using MATLAB, a nume
J. Aerosp. Technol. Manag.. Publicado em: 2015-06
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4. Nonextensive statistical mechanics applied to protein folding problem: kinetics aspects
A reduced (stereo-chemical) model is employed to study kinetic aspects of globular protein folding process, by Monte Carlo simulation. Nonextensive statistical approach is used: transition probability p i j between configurations i → j is given by p i j =[1 +(1 - q)ΔGi j/kB T ]1/(1-q), where q is the nonextensive (Tsallis) parameter. The system model cons
Brazilian Journal of Physics. Publicado em: 2009-08
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5. Comparação de modelos com censura intervalar em análise de sobrevivência / Comparison of interval-censored models in survival analysis
Interval-censored results when survival times are not exactly known, knowing only that they occur in an interval. Grouped survival data are particular cases of intervalcensored when individuals are evaluated in the same time-intervals, causing a great number of ties. A common procedure for the analysis this type of data is to ignore the nature of interval-ce
Publicado em: 2007
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6. Verification by Monte Carlo simulation of the efficiency of application of the likelyhood ratio test for identity of non-linear models / VerificaÃÃo por simulaÃÃo monte carlo da eficiÃncia da aplicaÃÃo do teste de razÃo de verossimilhanÃa para identidade de modelos nÃo lineares
An alternative to compare non-linear models is given by means of the test of identity of models. The statistics utilized normally is given by means of the likelihood ratio. Aiming to evaluate by means of the Monte Carlo simulation the performance of this test, by the aid of the different sample models, number of equations, robustness and different models, th
Publicado em: 2006
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7. Proton CT setup at CV-28 of IEN/CNEN
Although the idea of proton Computed Tomography (pCT) is not new, it is currently not available. It is still unknown if the image quality of pCT is sufficient for localizing tumors and if the accuracy of proton range calculations surpass that of X-ray CT based range calculations without significantly increasing the patient exposure. The spatial resolution of
Brazilian Journal of Physics. Publicado em: 2005-09
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8. EFEITOS DA IONOSFERA DE BAIXAS LATITUDES NO GPS - SBAS (GLOBAL POSITIONING SYSTEM - SPACE BASED AUGMENTATION SYSTEM) / EFFECT OF THE IONOSPHERE OF LOW LATITUDES IN GPS - SBAS (GLOBAL SYSTEM POSITIONING - SPACE BASED AUGMENTATION SYSTEM)
The low-latitude ionosphere has some features that could cause problems even to the joint GPS/SBAS operation. Among them, one finds the equatorial anomaly, whose electronic density - and thus its refractive index - can present intense horizontal gradients. These gradients can be intense enough to induce errors in the predictions by the GPS/SBAS. To analyze t
Publicado em: 2004
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9. Experimental validation of Monte Carlo (MANTIS) simulated x-ray response of columnar CsI scintillator screens
Purpose:MANTIS is a Monte Carlo code developed for the detailed simulation of columnar CsI scintillator screens in x-ray imaging systems. Validation of this code is needed to provide a reliable and valuable tool for system optimization and accurate reconstructions for a variety of x-ray applications. Whereas previous validation efforts have focused on matchi
American Association of Physicists in Medicine.
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10. Some goodness-of-fit methods for the Poisson plus added zeros distribution.
Methods for making inferences about the Poisson plus added zeros distribution and the truncated Poisson distribution are presented and illustrated with bacteriological data. Some of the methods are designed for testing the compatibility of the zero frequency with the Poisson distribution, whereas others are given for testing the goodness of fit for the trunc
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11. Genotypic Diversity: Estimation and Prediction in Samples
We show that a commonly used statistic of genotypic diversity can be used to reflect one form of deviation from panmixia, viz. clonal reproduction, by comparing observed and predicted sample statistics. The characteristics of the statistic, in particular its relationship with population genotypic diversity, are formalised and a method of predicting the genot
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12. A Transmission/Disequilibrium Test That Allows for Genotyping Errors in the Analysis of Single-Nucleotide Polymorphism Data
The present study assesses the effects of genotyping errors on the type I error rate of a particular transmission/disequilibrium test (TDTstd), which assumes that data are errorless, and introduces a new transmission/disequilibrium test (TDTae) that allows for random genotyping errors. We evaluate the type I error rate and power of the TDTae under a variety
The American Society of Human Genetics.