N Vector Model
Mostrando 1-12 de 78 artigos, teses e dissertações.
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1. Predictive model for difficult laryngoscopy using machine learning: retrospective cohort study
Abstract Background Both predictions and predictors of difficult laryngoscopy are controversial. Machine learning is an excellent alternative method for predicting difficult laryngoscopy. This study aimed to develop and validate practical predictive models for difficult laryngoscopy through machine learning. Methods Variables for the prediction of difficul
Brazilian Journal of Anesthesiology. Publicado em: 2022
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2. Finite element analysis of rapid canine retraction through reducing resistance and distraction
Objective: The aims of this study were to compare different surgical approaches to rapid canine retraction by designing and selecting the most effective method of reducing resistance by a three-dimensional finite element analysis. Material and Methods: Three-dimensional finite element models of different approaches to rapid canine retraction by reducin
J. Appl. Oral Sci.. Publicado em: 2014-01
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3. General exact harmonic analysis of in-plane timoshenko beam structures
The exact solution for the problem of damped, steady state response, of in-plane Timoshenko frames subjected to harmonically time varying external forces is here described. The solution is obtained by using the classical dynamic stiffness matrix (DSM), which is non-linear and transcendental in respect to the excitation frequency, and by performing the harmon
Lat. Am. j. solids struct.. Publicado em: 2014
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4. Experimental model of gene transfection in healthy canine myocardium. Perspectives of gene therapy for ischemic heart disease
Objective - To assess the transfection of the gene that encodes green fluorescent protein (GFP) through direct intramyocardial injection. Methods - The pREGFP plasmid vector was used. The EGFP gene was inserted downstream from the constitutive promoter of the Rous sarcoma virus. Five male dogs were used (mean weight 13.5 kg), in which 0.5 mL of saline soluti
Publicado em: 2010
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5. Fator de crescimento do endotélio vascular na viabilidade do retalho musculofasciocutâneo abdominal transverso do músculo reto do abdome, após abdominoplastia, em ratos / Vascular endothelial growth factor on the transverse rectus abdominis myocutaneous flap viability after abdominoplasty in rats
Introduction: Transverse rectus abdominis musculocutaneous (TRAM) flap may present necrosis, in pacients with risk factors. Abdominoplasty is a risk factor due to disruption and transection of vascular perforators. Perspectives on naked plasmid DNA encoding vascular endothelial growth factor (VEGF) as gene therapy for angiogenesis and neovascularization of T
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 25/03/2009
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6. Modelos de fissuração distribuída em vigas de concreto armado pelo método dos elementos finitos
O objetivo principal do trabalho é apresentar uma comparação entre distintas estratégias de simulação computacional de estruturas de concreto armado utilizando modelos de fissuração distribuída. Em uma primeira abordagem, foi adotado o modelo multidirecional de fissuração distribuída do programa DIANA empregando-se diferentes regras de amolecimen
Rev. IBRACON Estrut. Mater.. Publicado em: 2009-06
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7. Development of Space Vector PWM usin nonorthogonal reference frame for multilevel inverter voltage source in FPGA / Implementação do algoritmo da Modulação Vetorial usando coordenadas móveis não-ortogonais em Field-programmable Gate Array para inversores multiníveis fonte de tensão
This work presents the implementation and analysis of Space Vector PWM algorithm using non-orthogonal moving reference frame for diode clamped multilevel inverter in Field Programmable Gate Array (FPGA). In this algorithm, the non-orthogonal reference voltage is obtained according to the sector where the Reference Voltage (V*) lies. From the triangle identif
Publicado em: 2009
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8. Isolamento e caracterização de locos de microssatélite para Neothraupis fasciata, (Emberizidae, Passeriformes, Aves),
Microsatellite molecular markers are small repeated sequences in tanden compound of 1 to 6 nucleotides. Widely used as genetic markers, the microsatellites have a particular attribute that is the high rates of mutation. These molecular markers or are widely used in conservation genetics, population genetics, forensic research, diagnosis of diseases, ecologic
Publicado em: 2009
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9. Persistence of order on ferromagnetic models in the presence of quasi random auto-similar fields / Persistência de ordem em modelos ferromagnéticos na presença de campos auto-similares quase aleatórios"
In this work we study the existence of long range order for ferromagnetic models in the presence of an external field whose configuration has a pattern typically random. We prove, via the Peierlsargument modified by Griffiths in his study of an antiferromagnet, that the two dimensional ferromagnetic Ising model for a staggered field exhibits long-range order
Publicado em: 2007
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10. Comparison among HB-inspired algorithms for continuous-spin systems and gauge fields
We propose a new local algorithm for the thermalization of n-vector spin models, which can also be used in the numerical simulation of SU(N) lattice gauge theories. The algorithm combines heat-bath (HB) and micro-canonical updates in a single step - as opposed to the hybrid overrelaxation method, which alternates between the two kinds of update steps - while
Brazilian Journal of Physics. Publicado em: 2006-09
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11. The Coester line in relativistic mean field nuclear matter
The Walecka model contains essentially two parameters that are associated with the Lorentz scalar (S) and vector (V) interactions. These parameters are related to a two-body interaction consisting of S and V, imposing the condition that the two-body binding energy is fixed. We have obtained a set of different values for the nuclear matter binding energies (B
Brazilian Journal of Physics. Publicado em: 2005-03
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12. Modelagem matematica da dinamica da Leishmaniose / Mathematical modeling of dynamics of Leishmaniasis
We are dealing with a modelling of leishmaniasis considering initially the urban cycle with 2-hosts aiming to extend the results to a peridomestic cycle for n-hosts. In the urban case we consider the vector population constant, also, variable. We simplify the model the assess the factor regarded to risk of leishmaniasis analysis, which is the deforestation.
Publicado em: 2005