Periodic Points
Mostrando 1-12 de 45 artigos, teses e dissertações.
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1. A UNIFIED FORMULA FOR HYDROCARBONS WITH APPLICATIONS TO FUNCTIONAL GROUPS
Was supposed a numerical relationship between atoms of Hydrogen and Carbon in a hydrocarbon, assumption valid for all types of chains. In the proposed equation, variables such as number and types of carbon bonds are present, as well as the possible cycles. It was shown that the equation reduces to the known “general formulas” when applied to the type of
Quím. Nova. Publicado em: 20/07/2020
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2. Evaluation of insecticide resistance in Aedes aegypti populations connected by roads and rivers: the case of Tocantins state in Brazil
BACKGROUND The longstanding application of insecticides for vector control without periodic monitoring of the population response to these chemicals can directly drive the selection of resistant populations of vector mosquitoes. Tocantins is the newest state of the Brazilian Federation. Despite a historically high number of dengue cases, studies and monito
Mem. Inst. Oswaldo Cruz. Publicado em: 25/03/2019
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3. Analytical Solution for Optimal Low-Thrust Limited-Power Transfers Between Non-Coplanar Coaxial Orbits
ABSTRACT: In this paper, an analytical solution for time-fixed optimal low-thrust limited-power transfers (no rendezvous) between elliptic coaxial non-coplanar orbits in an inverse-square force field is presented. Two particular classes of maneuvers are related to such transfers: maneuvers with change in the inclination of the orbital plane and maneuvers wit
J. Aerosp. Technol. Manag.. Publicado em: 03/05/2018
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4. Dinâmica da vegetação em um fragmento de mata atlântica no nordeste do Brasil
To test the hypothesis that the physiognomy, structure and dynamics of woody species are influenced by the spatial gradient edge-interior, data were collected from these parameters in 2004, 2007 and 2010 in an Atlantic forest fragment. Species were sampled for the Canopy (DS), with circumference > 15 cm to 1.3 m soil and understory (SB) in circumference betw
Ciênc. Florest.. Publicado em: 2015-03
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5. Scope and efficiency of the newborn screening program in identifying hemoglobin S
Background: In 2001, the Brazilian Ministry of Health added hemoglobinopathies to the National Neonatal Screening Program to be implemented in three steps. In order to meet the proposed goals, it is crucial to establish periodic assessments of this program with the aim of monitoring its implementation. Objective: To assess the scope and the efficiency
Rev. Bras. Hematol. Hemoter.. Publicado em: 2014-01
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6. Ergodicidade e homeomorfismos anulares do toro / Ergodicity and annular homeomorphism of the torus
Seja f : T2 ->T2 um homeomorfismo homotópico a identidade e F : R2 ->R2 um levantamento de f tal que seu conjunto de rotação rho(F) é um segmento vertical não degenerado contido em 0 × R. Provamos que se f é ergódico com respeito a medida de Lebesgue no toro e se o vetor de rotação médio (com respeito a mesma medida) é da forma (0, alpha) para al
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 22/06/2012
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7. INVENTORY MANAGEMENT OF PIECES OF UNIFORMS IN THE BRAZILIAN NAVY / GERENCIAMENTO DE ESTOQUE DE PEÇAS DE UNIFORMES NA MARINHA DO BRASIL
The objective of this dissertation is to develop and establish an inventory management method for uniforms through IT solutions that can be used by all inventory managers at uniform distribution points. With this in mind, studies were conducted on techniques for material classification, short term demand forecasting, inventory management (continuous review m
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/06/2012
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8. Diagramas de bifurcação para um oscilador de chua quadridimensional / Bifurcation diagrams for a four-dimensional chua oscilllator / Bifurcation diagrams for a four-dimensional chua oscilllator / Diagramas de bifurcação para um oscilador de chua quadridimensional
In this work, we numerically studied a four-dimensional Chua circuit model through bifurcation diagrams and parameter spaces. Our main objective here is to ex-tend the studies already realized in this system, showing a wider range of its behavior. For this purpose, we constructed the parameter spaces using the Lyapunov exponents spectrum through color scales
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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9. A PESQUISA COMO INSTRUMENTO DE FORMAÇÃO DOCENTE / RESEARCH AS A TOOL FOR TEACHING
This dissertation deals with the research training of the teacher who works in Basic Education. This discussion has emerged as one of the important points in education, specifically in the discussion on teacher training. The big question of this investigation is: which formative elements have primary education teachers to work on research in school life? Fro
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 06/05/2011
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10. Avaliação dos Movimentos Periódicos Das Patas Na Síndrome Das Pernas Inquietas, Utilizando Um Modelo Animal Induzido Pela Lesão Do Núcleo Dopaminérgico A11 Com A 6-Hidroxidopamina / Evaluation of Periodic Limb Movements in Restless Legs Syndrome, using an animal model induced by Injury of A11 dopamine nucleus with 6-Hydroxydopamine
Background: Restless Legs Syndrome (RLS) is a major healthcare burden of increasing prevalence. It has been demonstrated that periodic limb movements in sleep (PLM) can occur as an isolated phenomenon, but they are often associated with RLS and represent the only symptom of this disorder that can be measured electrophysiologically. The aim of this study was
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/01/2011
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11. A new approach to identify the structural order of par (p) models
The periodic autoregressive model, a particular structure of the Box & Jenkins family, denoted by PAR (p), is employed to model the series of hydrological streamflow used for estimating the operational costs of the Brazilian hydro-thermal optimal dispatch. Recently, some aspects of this approachbegan to be studied and several researches on this topic are bei
Pesquisa Operacional. Publicado em: 2011-12
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12. Lyapunov minimizing measures for expanding maps of the circle
We consider the set of maps f є Fα+=Uβ >αC1β of the circle which are covering maps of degree D, expanding, minxєS1 f ¹(x) > 1 and orientation preserving. We are interested in characterizing the set of suchmaps f which admit a unique f -invariant probability measure _ minimizing ∫1n f ¹ d µ over all f -invariant probability measures. We show there
Publicado em: 2011