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Resultats globals: 11 registres trobats en 0.03 segons.
Articles, 11 registres trobats
Articles 11 registres trobats  1 - 10següent  anar al registre:
1.
19 p, 300.3 KB An extension of the 16th Hilbert problem for continuous piecewise linear-quadratic centers separated by a non-regular line / Esteban, Marina (Universidad de Córdoba. Departamento de Informática y Análisis Numérico) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Valls, Clàudia 1973- (Universidade de Lisboa. Instituto Superior Técnico. Departamento Matemática)
In the last few decades, there has been much interest in studying piecewise differential systems. This is mainly due to the fact that these differential systems allow us to modelize many natural phenomena. [...]
2023 - 10.1063/5.0167089
Chaos, Vol. 33, Issue 12 (December 2023) , art. 123120  
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2.
27 p, 1.2 MB Stochastic thermodynamics of self-oscillations : the electron shuttle / Wächtler, Christopher W. (Technical University Berlin. Institute of Theoretical Physics (Germany)) ; Strasberg, Philipp (Universitat Autònoma de Barcelona. Departament de Física) ; Klapp, Sabine H. L. (Technical University Berlin. Institute of Theoretical Physics (Germany)) ; Schaller, Gernot (Technical University Berlin. Institute of Theoretical Physics (Germany)) ; Jarzynski, Christopher (University of Maryland. Institute for Physical Science and Technology (USA))
Self-oscillation is a phenomenon studied across many scientific disciplines, including the engineering of efficient heat engines and electric generators. We investigate the single electron shuttle, a model nano-scale system that exhibits a spontaneous transition towards self-oscillation, from a thermodynamic perspective. [...]
2019 - 10.1088/1367-2630/ab2727
New journal of physics, Vol. 21, Issue 7 (July 2019) , art. 073009  
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3.
11 p, 246.0 KB Qualitative behaviour analysis of feedback-controlled Buck-Boost power converters thru three different techniques / Sosa, Keiver (Universidad de Los Andes. Doctorado en Ciencias Aplicadas (Venezuela)) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Spinetti-Rivera, Mario (Universidad de Los Andes. Departamento de Sistemas de Control (Venezuela)) ; Colina-Morles, Eliezer (Universidad de Cuenca. Departamento de Ingeniería Eléctrica, Electrónica y Telecomunicaciones (Ecuador))
This work is based on the comparison of three techniques for analyzing the qualitative behaviour of nonlinear dynamic systems, including the study of their finite and infinite equilibrium points. The qualitative techniques used are: the direct method of Lyapunov, The theorems of Dickson and Perko for second order quadratic differential systems and the linearization around finite equilibrium points. [...]
Este trabajo se basa en la comparación de tres técnicas de análisis del comportamiento cualitativo de sistemas dinámicos no lineales, incluyendo el estudio de los puntos de equilibrio finitos e infinitos. [...]
2018
Revista Politécnica, Vol. 42, Núm. 1 (Agosto-Octubre 2018) , p. 7-16
2 documents
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4.
23 p, 372.4 KB Melnikov analysis in nonsmooth differential systems with nonlinear switching manifold / Bastos, Jefferson L. R (Universidade Estadual Paulista. Instituto de Biociências, Letras e Ciências Exatas) ; Buzzi, Claudio (Universidade Estadual Paulista. Instituto de Biociências, Letras e Ciências Exatas) ; Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Novaes, Douglas D. (Universidade Estadual de Campinas. Instituto de Matemática, Estatística e Computação Científica)
We study the family of piecewise linear differential systems in the plane with two pieces separated by a cubic curve. Our main result is that 7 is a lower bound for the Hilbert number of this family. [...]
2019 - 10.1016/j.jde.2019.04.019
Journal of differential equations, Vol. 267, Issue 6 (September 2019) , p. 3748-3767  
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5.
30 p, 841.9 KB Two limit cycles in Liénard piecewise linear differential systems / Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Ponce, Enrique (Universidad de Sevilla. Departamento de Matemática Aplicada) ; Valls, Clàudia 1973- (Universidade de Lisboa. Instituto Superior Técnico. Departamento de Matemática)
Some techniques for studying the existence of limit cycles for smooth differential systems are extended to continuous piecewise linear differential systems. Rigorous new results are provided on the existence of two limit cycles surrounding the equilibrium point at the origin for systems with three zones separated by two parallel straight lines without symmetry. [...]
2019 - 10.1007/s00332-018-9523-5
Journal of Nonlinear Science, Vol. 29, Issue 4 (August 2019) , p. 1499-1522  
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6.
19 p, 3.4 MB On a new discrete SEIADR model with mixed controls : Study of its properties / Nistal, Raul (Universidad del País Vasco. Departamento de Electricidad y Electrónica) ; De la Sen, Manuel (Universidad del País Vasco. Departamento de Electricidad y Electrónica) ; Alonso-Quesada, Santiago (Universidad del País Vasco. Departamento de Electricidad y Electrónica) ; Ibeas, Asier (Universitat Autònoma de Barcelona. Departament de Telecomunicació i Enginyeria de Sistemes)
A new discrete SEIADR epidemic model is built based on previous continuous models. The model considers two extra subpopulation, namely, asymptomatic and lying corpses on the usual SEIR models. It can be of potential interest for diseases where infected corpses are infectious like, for instance, Ebola. [...]
2019 - 10.3390/math7010018
Mathematics, Vol. 7, Núm. 1 (January 2019) , art. 18  
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7.
16 p, 329.9 KB Improving the averaging theory for computing periodic solutions of the differential equations / Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Novaes, Douglas D. (Universitat Autònoma de Barcelona. Departament de Matemàtiques)
For m = 1, 2, 3, we consider differential systems of the form x0 = F0(t, x) +Xmi=1εiFi(t, x) + εm+1R(t, x, ε), where Fi: R × D → Rn, and R : R × D × (−ε0, ε0) → Rn are Cm+1 functions, and T-periodic in the first variable, being D an open subset of Rn, and ε a small parameter. [...]
2014 - 10.1007/s00033-014-0460-3
ZAMP. Journal of Applied Mathematics and Physics, Vol. 66 Núm. 4 (2014) , p. 1401-1412  
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8.
15 p, 517.2 KB Perturbed damped pendulum: finding periodic solutions via averaging method / Novaes, Douglas D. (Universidade Estadual de Campinas(Brazil). Departamento de Matemática)
Using the damped pendulum model we introduce the averaging method to study the periodic solutions of dynamical systems with small non-autonomous perturbation. We provide sufficient conditions for the existence of periodic solutions with small amplitude of the non-linear perturbed damped pendulum. [...]
2013 - 10.1590/s1806-11172013000100014
Revista Brasileira de Ensino de Física, Vol. 35 Núm. 1 (2013) , p. 7 pages  
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9.
24 p, 428.2 KB Uniqueness and Non-uniqueness of Limit Cycles for Piecewise Linear Differential Systems with Three Zones and No Symmetry / Llibre, Jaume (Universitat Autònoma de Barcelona. Departament de Matemàtiques) ; Ponce, Enrique (Escuela Técnica Superior de Ingeniería (Sevilla). Departamento de Matemática Aplicada) ; Valls, Clàudia 1973- (Instituto Superior Técnico. Departamento de Matemática)
Some techniques for proving the existence and uniqueness of limit cycles for smooth differential systems are extended to continuous piecewise linear differential systems with two and three zones and no symmetry. [...]
2015 - 10.1007/s00332-015-9244-y
Journal of Nonlinear Science, Vol. 25 Núm. 4 (2015) , p. 861-887  
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10.
20 p, 399.1 KB Regularization of hidden dynamics in piecewise smooth flows / Novaes, Douglas D. (Universidade Estadual de Campinas. Departamento de Matemática) ; Jeffrey, Mike R. (University of Bristol. Department of Engineering Mathematics)
This paper studies the equivalence between differentiable and non-differentiable Dynamics in R n. Filippov's theory of discontinuous differential equations allows us to find flow solutions of dynamical systems whose vector fields undergo switches at thresholds in phase space. [...]
2015 - 10.1016/j.jde.2015.06.005
Journal of differential equations, Vol. 259 (2015) , p. 4615-4633  
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Articles : 11 registres trobats   1 - 10següent  anar al registre:
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