Results 41 to 50 of about 46,048,977 (302)

Resolvent-Generated Generalized Spectral Operators for Nonlinear Dynamical Systems via Koopman Semigroups

open access: yesMathematics
Spectral methods form a cornerstone of linear dynamics, where evolution is resolved into harmonic modes governed by eigenvalues and spectral measures of normal operators.
Rui A. P. Perdigão
doaj   +1 more source

A Dynamic Biometric Authentication Algorithm for Near-Infrared Palm Vascular Patterns

open access: yesIEEE Access, 2020
In this paper we apply a novel approach to near-infrared subcutaneous palm vascular pattern authentication. The proposed method relies on a recursive algorithm based on a positive linear dynamical system whose evolution depends on the two matrices ...
David Palma   +3 more
doaj   +1 more source

Traveling wave solution for a lattice dynamical system with convolution type nonlinearity

open access: yes, 2012
We study traveling wave solutions for a lattice dynamical system with convolution type nonlinearity. We consider the monostable case and discuss the asymptotic behaviors, monotonicity and uniqueness of traveling wave.
null null   +3 more
core   +1 more source

A non-linear discrete-time dynamical system related to epidemic SISI model [PDF]

open access: yes, 2021
summary:We consider SISI epidemic model with discrete-time. The crucial point of this model is that an individual can be infected twice. This non-linear evolution operator depends on seven parameters and we assume that the population size under ...
Shoyimardonov, Sobirjon K.
core   +1 more source

A dynamical systems approach to micro spacecraft autonomy [PDF]

open access: yes, 2010
The drive toward reducing the size and mass of spacecraft has put new constraints on the computational resources available for control and decision making algorithms.
McInnes, Colin, Brown, Blair
core   +3 more sources

Population dynamical behavior of non-autonomous Lotka-Volterra competitive system with random perturbation [PDF]

open access: yes, 2009
In this paper, we consider a non-autonomous stochastic Lotka-Volterra competitive system dxi(t) = xi(t)[(bi(t)¡ nPj=1aij (t)xj (t))dt+¾i(t)dBi(t)], where Bi(t) (i = 1; 2; ¢ ¢ ¢ ; n) are independent standard Brownian motions. Some dynamical properties are
Key Laboratory for Applied Statistics of MOE (KLAS) (Funder)   +4 more
core   +4 more sources

Oscillation thresholds via the novel MBR method with application to oncolytic virotherapy

open access: yesNonlinear Analysis, 2022
Oncolytic virotherapy is a therapy for the treatment of malignant tumours. In some undesirable cases, the injection of viral particles can lead to stationary oscillations, thus preventing the full destruction of the tumour mass.
Bruno Buonomo   +2 more
doaj   +1 more source

Holographic memory updated by contradictory information: influence of low frequency attenuation on response stability

open access: yesКомпьютерная оптика, 2020
A 6f-scheme of Fourier holography with resonant architecture is considered, which implements memory replenishment with new information that contradicts the previously recorded. It is shown that the low-frequency attenuation due to the nonlinearity of the
A.V. Pavlov
doaj   +1 more source

Planar Bistable Structures Detection via the Conley Index and Applications to Biological Systems

open access: yesMathematics, 2023
Bistability is a ubiquitous phenomenon in life sciences. In this paper, two kinds of bistable structures in two-dimensional dynamical systems are studied: one is two one-point attractors, another is a one-point attractor accompanied by a cycle attractor.
Junbo Jia   +5 more
doaj   +1 more source

Towards a Generalized Cayley–Dickson Construction through Involutive Dimagmas

open access: yesMathematics
A generalized construction procedure for algebraic number systems is hereby presented. This procedure offers an efficient representation and computation method for complex numbers, quaternions, and other algebraic structures.
Nelson Martins-Ferreira   +1 more
doaj   +1 more source

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