Results 31 to 40 of about 52,502 (264)

Stability Analysis of a Fractional-Order SEIR-KS Computer Virus-Spreading Model with Two Delays

open access: yesJournal of Mathematics, 2021
In this paper, the stability and Hopf bifurcation of a fractional-order model of the Susceptible-Exposed-Infected-Kill Signals Recovered (SEIR-KS) computer virus with two delays are studied.
Zhufeng Wang, Xiaoqian Nie, Maoxin Liao
doaj   +1 more source

Empirical fixed point bifurcation analysis

open access: yesCoRR, 2018
Submitted to ICML2018 on 9 February ...
Gergo Bohner, Maneesh Sahani
openaire   +2 more sources

Enhancing Fatigue Crack Growth Resistance in Heterostructured Aluminum Bimetals by Tailored Interface Design

open access: yesAdvanced Engineering Materials, EarlyView.
Different Al/Al bimetals with a single engineered interface reveal how mechanical mismatch governs fatigue crack growth under cyclic loading. Additionally, loading–unloading–reloading tests link the microyielding behavior to the fatigue crack growth resistance, while crack‐path analysis reveals toughening mechanisms at the interface, highlighting ...
Sebastian Vollath   +2 more
wiley   +1 more source

Equivalent dimensionality reduction method of doubly‐fed induction generator model and discrimination of Hopf bifurcation type

open access: yesEnergy Science & Engineering, 2023
The strong coupling, multivariate, and nonlinear characteristics of the mathematical model of a doubly‐fed induction generator (DFIG) make it challenging to analyze the bifurcation category of the DFIG. Therefore, in this study, we developed a method for
Wei Chen   +4 more
doaj   +1 more source

From Photoalignment to Structured Light: Liquid Crystal Platforms for Beam Shaping and Complex Wavefronts

open access: yesAdvanced Functional Materials, EarlyView.
Photoaligned and photopatterned liquid crystal platforms provide programmable control of optical phase, polarization, and spin‐orbit interactions, enabling compact generation of structured light and complex wavefronts. This review highlights how tailored molecular orientations transform simple beams into designed optical fields, opening versatile ...
Le Zhou   +6 more
wiley   +1 more source

Driven Force Induced Bifurcation Delay on the Chaotic Financial System

open access: yesComplexity, 2022
To understand the variations in the financial characteristics, we examine the dynamical behaviors by considering the chaotic financial model with external force.
Balamurali Ramakrishnan   +3 more
doaj   +1 more source

Hopf bifurcation from a turning point. [PDF]

open access: yesJournal für die reine und angewandte Mathematik (Crelles Journal), 1985
The classical Hopf bifurcation theorem proves the bifurcation of periodic solutions from a branch of steady states for ODE's (or some types of parabolic PDE's) depending on one real parameter if (i) this branch can be parameterized over this parameter set and (ii) if the dimension of the unstable manifold of the steady states changes at a certain ...
openaire   +2 more sources

Dual‐Layer Conducting and Redox Polymer Bioanodes for Synergistic Enhancement of Microbial Extracellular Electron Transfer

open access: yesAdvanced Functional Materials, EarlyView.
A hybrid PEDOT/Fc‐LPEI conducting/redox polymer bioanode synergistically improves microbial extracellular electron transfer (EET) in Shewanella oneidensis MR‐1. The dual‐layer interface delivers 18‐fold higher current output and 27‐fold greater charge collected than bare carbon felt, highlighting an effective strategy for high‐performance ...
Shenghan Gu   +4 more
wiley   +1 more source

Topology and Material Optimization in Ultra‐Soft Magneto‐Active Structures: Making Advantage of Residual Anisotropies

open access: yesAdvanced Materials, EarlyView.
Residual magnetization induces pronounced mechanical anisotropy in ultra‐soft magnetorheological elastomers, shaping deformation and actuation even without external magnetic fields. This study introduces a computational‐experimental framework integrating magneto‐mechanical coupling into topology optimization for designing soft magnetic actuators with ...
Carlos Perez‐Garcia   +3 more
wiley   +1 more source

MAIN RATIOS OF THE INITIAL STAGE OF POSLEKRITICHECHKY OF DEFORMATION OF DESIGNS

open access: yesВестник Дагестанского государственного технического университета: Технические науки, 2016
Despite enormous number of works of theoretical and experimental character, the problem of classification of the phenomena of loss of stability of construction designs on groups of limit conditions neither in theoretical nor in practical the relations ...
G. M. Murtazaliyev   +2 more
doaj   +1 more source

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