Results 101 to 110 of about 163,781 (311)

The Fractional Form of the Tinkerbell Map Is Chaotic

Applied Sciences, 2018
This paper is concerned with a fractional Caputo-difference form of the well-known Tinkerbell chaotic map. The dynamics of the proposed map are investigated numerically through phase plots, bifurcation diagrams, and Lyapunov exponents considered from ...
Adel Ouannas, Amina-Aicha Khennaoui, Samir Bendoukha, Thoai Phu Vo, Viet-Thanh Pham, Van Van Huynh   +5 more
doaj   +1 more source

Active search for bifurcations

Chaos: An Interdisciplinary Journal of Nonlinear Science
Bifurcations mark qualitative changes of long-term behavior in dynamical systems and can often signal sudden (“hard”) transitions or catastrophic events (divergences). Accurately locating them is critical not just for deeper understanding of observed dynamic behavior, but also for designing efficient interventions.
Yorgos M. Psarellis, Themistoklis P. Sapsis, Ioannis G. Kevrekidis   +2 more
openaire   +4 more sources

Mixing‐Driven Defects and Composition Evolution in Multi‐Material Metal Additive Manufacturing

Advanced Science, EarlyView.
Operando synchrotron X‐ray imaging coupled with high‐fidelity multiphysics modeling uncovers how inter‐material mixing reshapes keyhole dynamics and drives distinct pore‐formation pathways in multi‐material laser powder bed fusion (LPBF). Composition‐dependent instabilities trigger defects, whereas rescanning suppresses porosity and homogenizes Cu ...
Zhilang Zhang, Steve Gaudez, Mario Togni, Steven Van Petegem, Markus Bambach, Mamzi Afrasiabi   +5 more
wiley   +1 more source

Phenomenological Study of Backward Bifurcation in Epidemiological Models.

, 2005
This thesis is about the phenomenological study of bifurcations in epidemiologicalmodels, in particular, in backward bifurcation. We consider models that exhibit such bifurcation and also consider the factors that cause them.
Manuhwa, Byron
core  

Stability and cycles in a cobweb model with heterogeneous expectations [PDF]

, 2004
We investigate the dynamics of a cobweb model with heterogeneous beliefs, generalizing the example of Brock and Hommes (1997). We examine situations where the agents form expectations by using either rational expectations, or a type of adaptive ...
Lasselle, Laurence, SVIZZERO, Serge, Svizzero, S., Tisdell, Clement Allan, CLEM TISDELL, Tisdell, C., Lasselle, L., LAURENCE LASSELLE, Tisdell, C, SERGE SVIZZERO, Svizzero, S, TISDELL, Clem   +11 more
core   +1 more source

Global dynamics of a modified hybrid Van der Pol-Rayleigh oscillator II

Electronic Journal of Differential Equations
In this article, we study a modified hybrid Van der Pol-Rayleigh oscillator. We consider bifurcation diagrams and global phase portraits in the Poincare disc under some restrictions on the parameters.
Yuhuan Lu, Rui Zhang
doaj  

Research on Displacement Mode and Path Tracking Method of Square Combined Deployable Mechanism

Xibei Gongye Daxue Xuebao, 2019
The motion path of the developable mechanism can not only grasp whether the mechanism can move according to the expected law, but also provide theoretical support for motion control.

doaj   +1 more source

TRIM: Simultaneous Thermometry, Ranging, and Imaging via a Monolithic Metalens

Advanced Science, EarlyView.
ABSTRACT While metasurfaces offer a pathway beyond the discrete architectures of conventional LWIR systems, physically fusing high‐precision thermometry and passive ranging onto a single metalens remains a formidable challenge. Here, we demonstrate a monolithic, dual‐focus metalens capable of simultaneous multidimensional sensing.
Man Yuan, Yuqing Zhang, Wangzhe Zhou, Zhaojian Zhang, Xiaoyun He, Xinpeng Jiang, Yiyi Li, Xin He, Jiagui Wu, Yuanmu Yang, Junbo Yang   +10 more
wiley   +1 more source

A Diseased Three-Species Harvesting Food Web Model with Various Response Functions

Biology and Life Sciences Forum
The purpose of this work is to present a three-species harvesting food web model that takes into account the interactions of susceptible prey, infected prey, and predator species. Prey species are assumed to expand logistically in the absence of predator
Thangavel Megala, Thangaraj Nandha Gopal, Manickasundaram Siva Pradeep, Arunachalam Yasotha   +3 more
doaj   +1 more source

Beyond Electrostatics: Anion‐π+ Orbital Hybridization Underpins High‐Performance Chloride Storage in Poly(arylamine) Organic Cathodes

Advanced Science, EarlyView.
The fundamental nature of anion storage in p‐type organic cathodes is elucidated using rigid poly(arylamine) frameworks. This study reveals a hybrid covalent‐ionic mechanism for anion‐π+ interactions, driven by synergistic orbital hybridization and electrostatic attraction.
Tiantian She, Jiena Weng, Jie Wang, Qiao Xi, Yangyang Zhang, Zijie Zhang, Zongqiong Lin, Wei Huang   +7 more
wiley   +1 more source