Results 11 to 20 of about 205,806 (279)

Definitions and Standardized Endpoints for Treatment of Coronary Bifurcations.

open access: yesJournal of the American College of Cardiology, 2022
The Bifurcation Academic Research Consortium (Bif-ARC) project originated from the need to overcome the paucity of standardization and comparability between studies involving bifurcation coronary lesions.
M. Lunardi   +28 more
semanticscholar   +1 more source

Low-order model for successive bifurcations of the fluidic pinball [PDF]

open access: yesJournal of Fluid Mechanics, 2018
We propose the first least-order Galerkin model of an incompressible flow undergoing two successive supercritical bifurcations of Hopf and pitchfork type.
Nan Deng   +3 more
semanticscholar   +1 more source

Bifurcations of transition states: Morse bifurcations [PDF]

open access: yesNonlinearity, 2014
A transition state for a Hamiltonian system is a closed, invariant, oriented, codimension-2 submanifold of an energy-level that can be spanned by two compact codimension-1 surfaces of unidirectional flux whose union, called a dividing surface, locally separates the energy-level into two components and has no local recrossings.
MacKay, Robert S., Strub, Dayal C.
openaire   +2 more sources

Imperfect homoclinic bifurcations [PDF]

open access: yesPhysical Review E, 2001
Experimental observations of an almost symmetric electronic circuit show complicated sequences of bifurcations. These results are discussed in the light of a theory of imperfect global bifurcations. It is shown that much of the dynamics observed in the circuit can be understood by reference to imperfect homoclinic bifurcations without constructing an ...
Glendinning, Paul   +2 more
openaire   +3 more sources

Bifurcation of Nonlinear Equations: II. Dynamic Bifurcation [PDF]

open access: yesMethods and Applications of Analysis, 2004
[Part 1 appeared ibid., 155--178 (1994; Zbl 1095.47027), see the preceding review.] The authors study dynamic bifurcation when the eigenvalue of the linearized problem has algebraic multiplicity one or two. As in the first part of the work for steady state bifurcations, their key idea is to analyze precisely the effect of the higher-order nondegenerate
Ma, Tian, Wang, Shouhong
openaire   +3 more sources

The flatness of bifurcations in 3D dendritic trees: an optimal design

open access: yesFrontiers in Computational Neuroscience, 2012
The geometry of natural branching systems generally reflects functional optimization. A common property is that their bifurcations are planar and that daughter segments don’t turn back in the direction of the parent segment.
Jaap evan Pelt, Harry B M Uylings
doaj   +1 more source

Stochastic Bifurcations and Excitement in the ZS-Model of a Thermochemical Reaction

open access: yesMathematics, 2022
The Zeldovich–Semenov model of the continuous stirred tank reactor with parametric random disturbances in temperature is considered. We study a phenomenon of noise-induced transformation of the equilibrium mode into the mixed-mode oscillatory stochastic ...
Lev Ryashko, Irina Bashkirtseva
doaj   +1 more source

Combinatorial optimization by simulating adiabatic bifurcations in nonlinear Hamiltonian systems

open access: yesScience Advances, 2019
Nonlinear Hamiltonian systems search optimal solutions exploiting their adiabatic and chaotic evolutions. Combinatorial optimization problems are ubiquitous but difficult to solve.
Hayato Goto   +2 more
semanticscholar   +1 more source

Agricultural and economic systems in the conditions оf enhancing exogenic and endogenous turbulence [PDF]

open access: yesЕкономіка та управління АПК, 2020
The common problems and patterns of development of nature, economy, society, which are in a state of order, disorder, crisis, catastrophe or chaos have become the basis for the conclusion about the unity of their basis.
Krusanov D., Varchenko O.M.
doaj   +1 more source

A Computational Study of Chaotic Flow and Heat Transfer within a Trapezoidal Cavity

open access: yesEnergies, 2023
Numerical findings of natural convection flows in a trapezoidal cavity are reported in this study. This study focuses on the shift from symmetric steady to chaotic flow within the cavity.
Md. Mahafujur Rahaman   +3 more
doaj   +1 more source

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