Results 11 to 20 of about 5,272,693 (342)

Hopf bifurcation analysis of Sel’kov model with time delay

Xi'an Gongcheng Daxue xuebao, 2023
The Sel’kov model with time-delay diffusion under homogeneous Neumann boundary conditions is considered. Firstly, the local asymptotically stability of the positive equilibrium point of the model is obtained by using spectral theory.
MA Yani, YUAN Hailong, WANG Yadi
doaj   +1 more source

OCT or Angiography Guidance for PCI in Complex Bifurcation Lesions.

New England Journal of Medicine, 2023
BACKGROUND Imaging-guided percutaneous coronary intervention (PCI) is associated with better clinical outcomes than angiography-guided PCI. Whether routine optical coherence tomography (OCT) guidance in PCI of lesions involving coronary-artery branch ...
N. Holm, L. Andreasen, O. Neghabat, P. Laanmets, I. Kumsārs, J. Bennett, N. Olsen, J. Odenstedt, Pavel Hoffmann, J. Dens, S. Chowdhary, P. O'Kane, Søren-Haldur Bülow Rasmussen, M. Heigert, O. Havndrup, J. van Kuijk, Simone Biscaglia, L. Mogensen, L. Henareh, F. Burzotta, Christian H Eek, D. Mylotte, Miquel S Llinas, L. Koltowski, P. Knaapen, Slobodan Calic, N. Witt, I. Santos-Pardo, S. Watkins, J. Lønborg, A. T. Kristensen, L. Jensen, Fredrik Calais, J. Cockburn, Andrew McNeice, O. Kajander, T. Heestermans, S. Kische, A. Eftekhari, J. Spratt, Evald H. Christiansen   +40 more
semanticscholar   +1 more source

Complex Dynamics of a Predator-Prey System With Gompertz Growth and Herd Behavior

International Journal of Analysis and Applications, 2023
The complex dynamics of a predator-prey system in discrete time are studied. In this system, we consider the prey’s Gompertz growth and the square-root functional response. The existence of fixed points and stability are examined.
Rizwan Ahmed, M. B. Almatrafi
doaj   +1 more source

An Experimental Model Exhibiting Anterograde and Retrograde Vascular Occlusion of Facial Fillers to Avoid Vision Loss

Plastic and Reconstructive Surgery, Global Open, 2023
Background:. Facial filler injection techniques that help decrease the risk of vascular occlusion are an important growing area of study. This study demonstrates a model of injecting fillers into a simulated bifurcated arterial system, using different ...
Gabriel Scott, MD, Meghana Khonda, MD, Tammy Hsu, MD, Alexander Rivkin, MD, Konstantin Frank, MD, John Fezza, MD, Julie Woodward, MD   +6 more
doaj   +1 more source

Generic bifurcation of periodic points [PDF]

Transactions of the American Mathematical Society, 1970
This paper discusses the bifurcation of periodic points of a generic symplectic diffeomorphism of a two manifold that depends on a parameter. A complete classification of the types of bifurcation that can occur in the generic case is given.
openaire   +1 more source

Relaxation to Fixed Points in the Logistic and Cubic Maps: Analytical and Numerical Investigation

Entropy, 2013
Convergence to a period one fixed point is investigated for both logistic and cubic maps. For the logistic map the relaxation to the fixed point is considered near a transcritical bifurcation while for the cubic map it is near a pitchfork bifurcation. We
Edson D. Leonel, Juliano A. de Oliveira, Edson R. Papesso   +2 more
doaj   +1 more source

Stability and Hopf bifurcation on an SEIR delayed model with logistic growth [PDF]

Songklanakarin Journal of Science and Technology (SJST), 2018
This paper investigates the stability and Hopf bifurcation of SEIR delay model with logistic growth. Firstly, the existence and uniqueness of equilibrium point are analyzed.
Aekabut Sirijampa, Settapat Chinviriyasit, Wirawan Chinviriyasit   +2 more
doaj   +1 more source

ON COMPUTATIONAL DIFFERENCES OF CRITICAL POINTS ON EQUILIBRIUM CURVE

International Journal for Computational Civil and Structural Engineering, 2017
In this paper, we discuss the features of investigating the type of the critical point on the equilibrium curve (bifurcation point or limit point). There are new ideas about the completion of the initial equilibrium at the limit point or bifurcation ...
Gaik A. Manuylov, Sergey B. Kosytsyn, Maxim M. Begichev   +2 more
doaj   +1 more source

On the Relationship between Equilibrium Bifurcations and Ideal MHD Instabilities for Line-Tied Coronal Loops [PDF]

, 2009
For axisymmetric models for coronal loops the relationship between the bifurcation points of magnetohydrodynamic (MHD) equilibrium sequences and the points of linear ideal MHD instability is investigated imposing line-tied boundary conditions.
Neukirch, Thomas, Romeou, Zaharenia
core   +2 more sources

Bifurcation from zero or infinity in nonlinearizable Sturm–Liouville problems with indefinite weight

Electronic Journal of Qualitative Theory of Differential Equations, 2021
In this paper, we consider bifurcation from zero or infinity of nontrivial solutions of the nonlinear Sturm–Liouville problem with indefinite weight. This problem is mainly important because of it is related with a selection-migration model in genetic ...
Ziyatkhan Aliyev, Leyla Nasirova
doaj   +1 more source