Results 1 to 10 of about 22,008 (172)

Higher order stroboscopic averaged functions: a general relationship with Melnikov functions

open access: yesElectronic Journal of Qualitative Theory of Differential Equations, 2021
In the research literature, one can find distinct notions for higher order averaged functions of regularly perturbed non-autonomous $T$-periodic differential equations of the kind $x'=\varepsilon F(t,x,\varepsilon)$.
Douglas Novaes
doaj   +4 more sources

Third Order Melnikov Functions of a Cubic Center under Cubic Perturbations

open access: yesMathematics, 2022
In this paper, cubic perturbations of the integral system (1+x)2dH where H=(x2+y2)/2 are considered. Some useful formulae are deduced that can be used to compute the first three Melnikov functions associated with the perturbed system.
Yanwei Liu, Tonghua Zhang, Xia Liu
doaj   +3 more sources

Membrane interaction of cyanobacterial and chloroplast ESCRT-III proteins. [PDF]

open access: yesPlant J
SUMMARY More than three decades ago, the inner membrane‐associated protein of 30 kDa (IM30), also known as Vipp1, was identified in pea chloroplasts to bind to the chloroplast inner envelope membrane. IM30/Vipp1 is a membrane‐associated and soluble stromal protein and is proposed to mediate vesicle formation.
Kutzner M   +4 more
europepmc   +2 more sources

Nonlinear behavior and energy harvesting performance of a new tunable quasi-zero stiffness system [PDF]

open access: yesScientific Reports
Energy harvesting from vibrations is a popular research topic. However, it is difficult to change the values of its dynamic stiffness characteristics during the operation of device.
Xinzong Wang, Xiaofang Kang, Ao Zhang
doaj   +2 more sources

The City on the Rails [PDF]

open access: yesAthens Journal of Architecture, 2023
The research focuses on the application of the elements of the theory of linear urbanism to the current solution for the rural settlements, from which life is lost and they are becoming open-air museums.
Nikoleta Slováková
doaj   +1 more source

Bifurcating Limit Cycles with a Perturbation of Systems Composed of Piecewise Smooth Differential Equations Consisting of Four Regions

open access: yesMathematics, 2023
Systems composed of piecewise smooth differential (PSD) mappings have quantitatively been searched for answers to a substantial issue of limit cycle (LC) bifurcations. In this paper, LC numbers (LCNs) of a PSD system (PSDS) consisting of four regions are
Erli Zhang, Jihua Yang, Stanford Shateyi
doaj   +1 more source

Exploring Limit Cycle Bifurcations in the Presence of a Generalized Heteroclinic Loop

open access: yesMathematics, 2023
This work revisits the number of limit cycles (LCs) in a piecewise smooth system of Hamiltonian with a heteroclinic loop generalization, subjected to perturbed functions through polynomials of degree m.
Erli Zhang, Stanford Shateyi
doaj   +1 more source

Global Bifurcation Behaviors and Control in a Class of Bilateral MEMS Resonators

open access: yesFractal and Fractional, 2022
The investigation of global bifurcation behaviors the vibrating structures of micro-electromechanical systems (MEMS) has received substantial attention. This paper considers the vibrating system of a typical bilateral MEMS resonator containing fractional
Yijun Zhu, Huilin Shang
doaj   +1 more source

Determinant grammar of the Russian language as an academic grammar of a new type

open access: yesRussian Language Studies, 2023
The relevance of the research is caused by the need to find a method that provides a complete and systematic presentation of Russian grammar. The aim of the study is to discuss the prospects for creating a grammar that will clarify the reasons for the ...
Olga I. Valentinova   +2 more
doaj   +1 more source

The Number of Limit Cycles Bifurcating from an Elementary Centre of Hamiltonian Differential Systems

open access: yesMathematics, 2022
This paper studies the number of small limit cycles produced around an elementary center for Hamiltonian differential systems with the elliptic Hamiltonian function H=12y2+12x2−23x3+a4x4(a≠0) under two types of polynomial perturbations of degree m ...
Lijun Wei, Yun Tian, Yancong Xu
doaj   +1 more source

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