Results 81 to 90 of about 3,059 (189)

Bifurcation Analysis and Chaos Control in a Discrete-Time Parasite-Host Model

Discrete Dynamics in Nature and Society, 2017
A discrete-time parasite-host system with bifurcation is investigated in detail in this paper. The existence and stability of nonnegative fixed points are explored and the conditions for the existence of flip bifurcation and Neimark-Sacker bifurcation ...
Xueli Chen, Lishun Ren
doaj   +1 more source

Living in the E‐Commerce Countryside: Place Attachment and the Negotiation of Place Change in Rural China

Journal of Community &Applied Social Psychology, Volume 36, Issue 5, September/October 2026.
ABSTRACT Rapid digitization is transforming rural communities worldwide, yet current scholarship remains dominated by macro‐economic analyses. This study examines the micro‐dynamics of engagement in E‐commerce villages through the lens of lived experience.
Nan Yang, Mallika Bose
wiley   +1 more source

Stability and Bifurcation Analysis in a Discrete Predator–Prey System of Leslie Type with Radio-Dependent Simplified Holling Type IV Functional Response

Mathematics
In this paper, we use a semi-discretization method to consider the predator–prey model of Leslie type with ratio-dependent simplified Holling type IV functional response.
Luyao Lv, Xianyi Li
doaj   +1 more source

Complex Dynamics in Generalized Hénon Map

Discrete Dynamics in Nature and Society, 2015
The complex dynamics of generalized Hénon map with nonconstant Jacobian determinant are investigated. The conditions of existence for fold bifurcation, flip bifurcation, and Hopf bifurcation are derived by using center manifold theorem and bifurcation ...
Meixiang Cai
doaj   +1 more source

Characterization of Pulmonary Functional Abnormalities in Systemic Sclerosis Using Xenon MRI

Journal of Magnetic Resonance Imaging, Volume 64, Issue 3, Page 655-666, September 2026.
ABSTRACT Background Xenon MRI is increasingly used to evaluate patients with interstitial lung disease (ILD) and pulmonary hypertension (PH), both of which are common manifestations of systemic sclerosis (SSc). As such, Xe‐MRI may be suited to interrogate lung function impairment in SSc.
Dawson Shaver, Steven Haworth, Evan Graumann, Bradie Frizzell, David H. Lee, Jiwoong Choi, Chase S. Hall, Scott M. Matson, Mark Hamblin, Mario Castro, Paul S. Schmidt, Peter J. Niedbalski   +11 more
wiley   +1 more source

Codimension-Two Bifurcations of Fixed Points in a Class of Discrete Prey-Predator Systems

Discrete Dynamics in Nature and Society, 2011
The dynamic behaviour of a Lotka-Volterra system, described by a planar map, is analytically and numerically investigated. We derive analytical conditions for stability and bifurcation of the fixed points of the system and compute analytically the normal
R. Khoshsiar Ghaziani, W. Govaerts, C. Sonck   +2 more
doaj   +1 more source

DynaTOF: Time‐Resolved Noncontrast Cerebral MR Angiography Using Spatially Modulated RF Saturation

Magnetic Resonance in Medicine, Volume 96, Issue 3, Page 1134-1147, September 2026.
ABSTRACT Purpose To develop a time‐resolved extension of three‐dimensional time‐of‐flight MR angiography, termed Dynamic TOF (DynaTOF), that exploits intrinsic RF saturation behavior to enable noncontrast visualization of cerebrovascular hemodynamics.
Naoyuki Takei, Keita Fujii, Xucheng Zhu, Yuichi Suzuki, Satoru Miyawaki, Motoyuki Umekawa, Satoshi Koizumi, Tetsuya Wakayama, Shiori Amemiya, Osamu Abe   +9 more
wiley   +1 more source

Critical bifurcation surfaces of 3D discrete dynamics

Discrete Dynamics in Nature and Society, 2000
This paper deals with the analytical representation of bifurcations of each 3D discrete dynamics depending on the set of bifurcation parameters. The procedure of bifurcation analysis proposed in this paper represents the 3D elaboration and specification ...
Michael Sonis
doaj   +1 more source

Concurrent Four‐Dimensional Dynamic MRA and Perfusion Imaging Using Dual‐Module Arterial Spin Labeling MRI With Stack‐Of‐Stars Golden‐Angle Radial Acquisition

NMR in Biomedicine, Volume 39, Issue 9, September 2026.
A dual‐module ASL technique is proposed to obtain both 4D MRA and cerebral perfusion images within a single scan. Both time‐resolved MRA with high spatiotemporal resolution and perfusion‐weighted images with good contrast were successfully obtained from a single scan using the proposed dual‐module ASL technique, suggesting that it could be a ...
Tianrui Zhao, Jianing Tang, Sarah J. Moum, Yining He, Ziyi Huang, Ayaz Khan, Ali Shaibani, Lirong Yan   +7 more
wiley   +1 more source

Bifurcation of *COOH Pathway Determines HCOOH Formation in CO2 Electroreduction on Bismuth

Angewandte Chemie, Volume 138, Issue 31, 27 July 2026.
Driven by the mechanistic debate of Bi‐catalyzed CO2‐to‐HCOOH conversion, ambiguity remains regarding true reaction pathways. To resolve this, we combined constant‐potential AIMD simulations with spectroscopic evidence to analyze the competitive pathways.
Hyun Dong Jung, Jiawei Deng, Yanbo Hua, Kun Jiang, Seoin Back   +4 more
wiley   +2 more sources