Results 41 to 50 of about 97,564 (280)

Limit cycles of discontinuous piecewise linear differential systems formed by centers or Hamiltonian without equilibria separated by irreducible cubics

open access: yesMoroccan Journal of Pure and Applied Analysis, 2021
The main goal of this paper is to provide the maximum number of crossing limit cycles of two different families of discontinuous piecewise linear differential systems.
Damene Loubna, Benterki Rebiha
doaj   +1 more source

Mathematical approaches to differentiation and gene regulation [PDF]

open access: yes, 2005
We consider some mathematical issues raised by the modelling of gene networks. The expression of genes is governed by a complex set of regulations, which is often described symbolically by interaction graphs. Once such a graph has been established, there
Soulé, C.
core   +3 more sources

ON THE STABILIZATION OF THE LINEAR HYBRID SYSTEM STRUCTURE

open access: yesПроблемы анализа, 2014
The linear control hybrid system, consisting of a fi- nite set of subsystems (modes) having different dimensions, is considered. The moments of reset time are determined by some complementary function – evolutionary time.
Kirillov
doaj   +1 more source

Crossing limit cycles for a class of piecewise linear differential centers separated by a conic

open access: yesElectronic Journal of Differential Equations, 2020
In previous years the study of the version of Hilbert's 16th problem for piecewise linear differential systems in the plane has increased. There are many papers studying the maximum number of crossing limit cycles when the differential system is ...
Johana Jimenez   +2 more
doaj  

Reconstruction of Governing Equations from Vibration Measurements for Geometrically Nonlinear Systems

open access: yesLubricants, 2019
Data-driven system identification procedures have recently enabled the reconstruction of governing differential equations from vibration signal recordings.
Marco Didonna   +5 more
doaj   +1 more source

Diffusion source function identification in the process of gas seepage in a coal seam

open access: yesFrontiers in Earth Science, 2022
Through piecewise linearization, the control equation of gas migration in coal is simplified to a parabolic differential equation with time-dependent source terms, and under the corresponding initial conditions, boundary and additional conditions are ...
Fu Lv   +4 more
doaj   +1 more source

Accurate difference methods for linear ordinary differential systems subject to linear constraints [PDF]

open access: yes, 1969
We consider the general system of n first order linear ordinary differential equations y'(t)=A(t)y(t)+g(t ...
Keller, Herbert B.
core   +1 more source

Reconstruction of Planar Domains from Partial Integral Measurements [PDF]

open access: yes, 2011
We consider the problem of reconstruction of planar domains from their moments. Specifically, we consider domains with boundary which can be represented by a union of a finite number of pieces whose graphs are solutions of a linear differential equation ...
Batenkov, Dmitry   +2 more
core   +2 more sources

Algebraic Change-Point Detection [PDF]

open access: yes, 2009
Elementary techniques from operational calculus, differential algebra, and noncommutative algebra lead to a new approach for change-point detection, which is an important field of investigation in various areas of applied sciences and engineering ...
Fliess, Michel   +2 more
core   +4 more sources

A theoretical exploration of birhythmicity in the p53-Mdm2 network. [PDF]

open access: yesPLoS ONE, 2011
Experimental observations performed in the p53-Mdm2 network, one of the key protein modules involved in the control of proliferation of abnormal cells in mammals, revealed the existence of two frequencies of oscillations of p53 and Mdm2 in irradiated ...
Wassim Abou-Jaoudé   +2 more
doaj   +1 more source

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