Results 151 to 160 of about 27,914 (184)
Enhancing the Performance of Vibration Energy Harvesting Based on 2:1:2 Internal Resonance in Magnetically Coupled Oscillators. [PDF]
Micromachines (Basel)Dowlati S, Kacem N, Bouhaddi N.
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A thermo-mechanically loaded rotating FGM cylindrical pressure vessels under parabolic changing properties: An analytical and numerical analysis. [PDF]
HeliyonDas P +4 more
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Finite Element Approach for Rheological Behavior in Colloidal Electrolytes in Lithium-Ion Battery Performance. [PDF]
ACS OmegaRaza A +5 more
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Qualitative Study of a Class of Quartic Differential System with an Unstable Node
2021 International Conference on Recent Advances in Mathematics and Informatics (ICRAMI), 2021In this paper, we introduce a class of quartic differential system from the integrability and the existence of limit cycle. We show that this class is integrable and we give the explicit expression of first integral. After this, we prove, under suitable conditions on the parameters, that this class admits a non-algebraic limit cycle surrounding an ...
Rebeiha Allaoua +2 more
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Global C∞ integrability of quartic–linear polynomial differential systems
Dynamical Systems, 2018The quartic–linear polynomial differential systems having at least one finite singularity are affine equivalent to systems of the form x˙=P(x,y)=P1(x,y)+P2(x,y)+P3(x,y)+P4(x,y),y˙=Q(x,y) where P an...
Claudia Valls, Jaume Giné
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Nonlinear Dynamics, 2014
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Liang, Haihua +2 more
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Liang, Haihua +2 more
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Communications in Nonlinear Science and Numerical Simulation, 2012
The authors investigate a class of planar systems of the form \[ \dot u = u + P(u,v),\dot v = -v + Q(u,v) \] in a neighborhood of the origin, where \(P\) and \(Q\) are polynomial functions in \(u\) and \(v\) of degree at most four and without constant or linear terms. They give necessary and sufficient conditions for the origin to be a center, and that
Feng, Li, Liu, Yirong
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The authors investigate a class of planar systems of the form \[ \dot u = u + P(u,v),\dot v = -v + Q(u,v) \] in a neighborhood of the origin, where \(P\) and \(Q\) are polynomial functions in \(u\) and \(v\) of degree at most four and without constant or linear terms. They give necessary and sufficient conditions for the origin to be a center, and that
Feng, Li, Liu, Yirong
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Engineering Computations, 2020
Purpose The purpose of this study is to construct quartic trigonometric tension (QTT) B-spline collocation algorithms for the numerical solutions of the Coupled Burgers’ equation. Design/methodology/approach The finite elements method (FEM) is a numerical method for obtaining an approximate solution of partial differential equations (PDEs).
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Purpose The purpose of this study is to construct quartic trigonometric tension (QTT) B-spline collocation algorithms for the numerical solutions of the Coupled Burgers’ equation. Design/methodology/approach The finite elements method (FEM) is a numerical method for obtaining an approximate solution of partial differential equations (PDEs).
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On a class of quartic surfaces and an associated integrable differential system
Journal of Physics A: Mathematical and Theoretical, 2007Given a unicursal quartic in a plane and four bi-tangential straight lines, there exist a pair of conics four times tangential to it. Choosing an arbitrary point K0 outside the plane, the lines and either one of the conics determine four planes and a cone, and a quartic surface can be found that stays tangential to them and presents 15 conic point ...
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