Governing System
Mostrando 1-12 de 162 artigos, teses e dissertações.
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1. Ferrimagnetic to paramagnetic transition and dielectric relaxation in Ni1-xZnxFe2O4 ferrites
Abstract The spinel ferrite system Ni1-xZnxFe2O4 (x=0-0.7, Δx=0.1) was prepared by wet chemical co-precipitation method using sulfates of respective metal ions. The electrical resistivity and dielectric properties of the prepared samples have been studied as a function of temperature, frequency, and Zn content (x). The DC resistivity (ϱ) was measured in th
Cerâmica. Publicado em: 2021-06
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2. Here Today, Gone Tomorrow - Political Ambition, Coalitions, and Accountability as Determinants of Ministerial Turnover in the Brazilian Multiparty Presidential System
The article aims at understanding the determinants of ministerial turnover in presidential systems. There are essentially three key factors that govern the propensity for ministerial turnover in a presidential system: 01. political ambition - reflected in the individual or collective strategies and tactics employed by the party-affiliated actors represented
Bras. Political Sci. Rev.. Publicado em: 09/12/2019
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3. Aristocracia judicial brasileira: privilégios, habitus e cumplicidade estrutural
Resumo Inserido no campo da sociologia das elites, procura-se compreender como e por que a magistratura no Brasil reproduz em suas estruturas uma dinâmica aristocrática e elitista que parece ser incompatível com os discursos que compõem suas próprias justificativas teóricas e com os princípios democráticos que regem suas funções. Os magistrados se
Rev. direito GV. Publicado em: 05/08/2019
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4. Princípios sobre o direito de acesso à informação oficial na América Latina
Resumo O presente texto tem como ponto de partida os 10 princípios sobre o direito de acesso à informação, declarados, em 2008, pelo Comitê Jurídico Interamericano (CJI) da Organização dos Estados Americanos (OEA), e a Lei Modelo Interamericana sobre Acesso à Informação Pública da OEA, de 2010, os quais sistematizam a jurisprudência da Corte Int
Rev. Investig. Const.. Publicado em: 15/04/2019
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5. Analytical solution for nonlinear dynamic behavior of viscoelastic nano-plates modeled by consistent couple stress theory
Abstract This paper analyses the non-stationary free vibration and nonlinear dynamic behavior of the viscoelastic nano-plates. For this purpose, a size-dependent theory is developed in the framework of the consistent couple stress theory for viscoelastic materials. The previously presented modified couple stress theory was based on some consideration making
Lat. Am. j. solids struct.. Publicado em: 17/09/2018
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6. One-Dimensional Thermal Analysis Model for Charring Ablative Materials
ABSTRACT: This paper presents a one-dimensional model for the analysis of the charring ablative materials used in spacecraft thermal protection systems. The numerical method is based on an implicit finite difference formulation of the governing equations written for a system of mobile coordinates that accounts for the possible presence of surface recession.
J. Aerosp. Technol. Manag.. Publicado em: 15/02/2018
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7. Behavioral Study of Finite Beam Resting on Elastic Foundation and Subjected to Travelling Distributed Masses
Abstract The classical problem of the response characteristics of uniform structural member resting on elastic subgrade and subjected to uniform partially distributed load is studied in this work. The closed form solutions of the governing fourth order partial differential equations with variable coefficients are presented using an elegant analytical techniq
Lat. Am. j. solids struct.. Publicado em: 2017-02
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8. Axial Static Load Dependence Free Vibration Analysis of Helical Springs Based on the Theory of Spatially Curved Bars
Abstract This work addresses an accurate and detailed axial static load dependence linearly elastic free vibration analysis of cylindrical helical springs based on the theory of spatially curved bars and the transfer matrix method. For a continuous system, governing equations comprise coupled vibration modes namely transverse vibrations in two orthogonal pla
Lat. Am. j. solids struct.. Publicado em: 2016-12
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9. Dynamic Instability of Beams Under Tip Follower Forces Using Geometrically Exact, Fully Intrinsic Equations
Abstract In this study, the dynamic instability of beams under tip follower forces are considered. The beam is modeled by using the geometrically exact, fully intrinsic beam equations which is subjected to an inclined tip follower force. Generalized differential quadrature method is employed to solve the governing equations. The effect of different parameter
Lat. Am. j. solids struct.. Publicado em: 2016-12
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10. A New Algorithm for Shock Sensor Calculation at Supersonic Speeds on a 3D-Unstructured Grid
ABSTRACT In this paper, 3-Dsupersonic flow around two types of wings is solved using a new algorithm for shock sensor calculation. A dual-time-stepping implicit method with 2nd-order accuracy is used for time integration of the equations. In each real time step, the non-linear system of equations is solved by iterating in pseudo-time, using a multi-step inte
J. Aerosp. Technol. Manag.. Publicado em: 2016-12
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11. Pressure-Based and Potential-Based Differential Quadrature Procedures for Free Vibration of Circular Plates in Contact with Fluid
Abstract The differential quadrature method (DQM) has been so far applied to a wide variety of fluid and/or structural problems. The results of many researchers reveal that the DQM is computationally efficient and is applicable to a large class of boundary value problems. However, there is little information about its applications to fluid-structure interact
Lat. Am. j. solids struct.. Publicado em: 2016-04
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12. Effect of Uniformly Distributed Tangential Follower Force on the Stability of Rotating Cantilever Tube Conveying Fluid
Abstract In this paper, the Euler-Bernoulli beam model is used to predict the structural instability of rotating cantilever tubes conveying fluid and subjected to uniform distributed tangential compressive load. The governing equation of motion and boundary conditions of the system are derived using the Hamilton's principle. Then, Galerkin method is applied
Lat. Am. j. solids struct.. Publicado em: 2016-02