Domain Modeling And Analysis
Mostrando 1-12 de 104 artigos, teses e dissertações.
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1. Non-Invasive Detection of Adulterated Olive Oil in Full Bottles Using Time-Domain NMR Relaxometry
A fast procedure using time-domain nuclear magnetic resonance (TD-NMR) to detect olive oil adulteration with polyunsaturated vegetable oils in filled bottles is proposed. The 1H transverse relaxation times (T2) of 37 commercial samples were measured using low-field nuclear magnetic resonance (LF-NMR) spectrometer and a unilateral nuclear magnetic resonance (
J. Braz. Chem. Soc.. Publicado em: 2017-02
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2. Simulation of Stress Concentration Problems in Laminated Plates by Quasi-Trefftz Finite Element Models
Abstract Hybrid quasi-Trefftz finite elements have been applied with success to the analysis of laminated plates. Two independent fields are approximated by linearly independent, hierarchical polynomials: the stress basis in the domain, adapted from Papkovitch-Neuber solution of Navier equations, and the displacement basis, defined on element surface. The st
Lat. Am. j. solids struct.. Publicado em: 2016-09
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3. Comparison of In-Flight Measured and Computed Aeroelastic Damping: Modal Identification Procedures and Modeling Approaches
ABSTRACT The Operational Modal Analysis technique is a methodology very often applied for the identification of dynamic systems when the input signal is unknown. The applied methodology is based on a technique to estimate the Frequency Response Functions and extract the modal parameters using only the structural dynamic response data, without assuming the kn
J. Aerosp. Technol. Manag.. Publicado em: 2016-06
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4. Dynamic and static analysis of FGM skew plates with 3D elasticity based graded finite element modeling
The present article deals with static and dynamic behavior of functionally graded skew plates based on the three-dimensional theory of elasticity. On the basis of the principle of minimum potential energy and the Rayleigh Ritz method, the equations of motion are derived in conjunction with the graded finite element approach. Solution of the resulted system o
Lat. Am. j. solids struct.. Publicado em: 2014-05
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5. Sistemas CDMA ópticos coerentes baseados em codificação de fase espectral / Coherent optical CDMA systems based on spectral phase coding
In this work we perform a comprehensive analysis of a spectral phase-encoded time spreading optical code division multiple access (SPECTS-OCDMA) system. Despite being a numerical study, efforts were concentrated on the investigation of more realistic scenarios using as much information as possible from implemented test-beds in laboratories. In this context,
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 11/12/2012
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6. Stochastic modeling of flexible rotors
Flexible rotors are characterized by inherent uncertainties affecting the parameters that influence the dynamic responses of the system. In this context, the handling of variability in rotor dynamics is a natural and necessary extension of the modeling capability of the existing techniques of deterministic analysis. Among the various methods used to model un
J. Braz. Soc. Mech. Sci. & Eng.. Publicado em: 2012
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7. SIMOO-RT : an object-oriented framework for the development of real-time industrial automation systems
This paper presents SIMOO-RT, an object-oriented framework designed to support the whole development cycle of real-time industrial automation systems. It is based on the concept of distributed active objects, which are autonomous execution entities that have their own thread of control, and that interact with each other by means of remote methods invocation.
Publicado em: 2011
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8. Modelagem de nicho em espécies de plantas do Cerrado e distribuição espacial da variabilidade genética / Niche modeling of plants species from the Cerrado and spatial distribution of genetic variability
Ecological and evolutionary factors may explain the patterns of intrapopulation variability across the geographic distribution of a species. More suitable habitats, in ecological terms, allow the survival of greater number of individuals, which increases the genetic variability in the population, while in less suitable habitats, because of smaller population
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/09/2010
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9. Suporte automatizado para construção de modelos conceituais bem fundamentados
The adoption of ontologically well founded languages for building ontologies has acquiring more adopters, however its widespread use stumble on using difficulties by inexperienced modelers. This dissertation proposes a methodological guide to support the building of domain ontologies using the ontologically well founded language OntoUML. This guide through t
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/08/2010
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10. Linear and nonlinear aeroelastic analyses of a typical airfoil section with control surface freeplay.
This work presents an extensive analysis on the linear and nonlinear behavior of three degrees of freedom typical airfoil section oscillating in a bidimensional incompressible flow. The nonlinearity is introduced by means of control surface freeplay. The theoretical modeling of the aeroelastic system is reviewed from structural and aerodynamic standpoint. Tw
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 07/07/2010
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11. Linear and nonlinear aeroelastic analyses of a typical airfoil section with control surface freeplay.
This work presents an extensive analysis on the linear and nonlinear behavior of three degrees of freedom typical airfoil section oscillating in a bidimensional incompressible flow. The nonlinearity is introduced by means of control surface freeplay. The theoretical modeling of the aeroelastic system is reviewed from structural and aerodynamic standpoint. Tw
Publicado em: 2010
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12. Dinâmica tridimensional de risers. / Tridimensional dynamics of risers.
Used in offshore oil exploitation risers are elements that connect the floating unit to the oil well on the seabed. They are exposed to the environmental conditions of the site where they are installed. Normally, the risers global behavior is divided in static and dynamic analyses. The static loads acting on the pipe are: weight, buoyancy and current load. T
Publicado em: 2010