Results 231 to 240 of about 249,196 (276)

From Stability to Chaos: A Complete Classification of the Damped Klein‐Gordon Dynamics

open access: yesMathematical Methods in the Applied Sciences, Volume 49, Issue 9, Page 9696-9708, June 2026.
ABSTRACT We investigate the transition between stability and chaos in the damped Klein‐Gordon equation, a fundamental model for wave propagation and energy dissipation. Using semigroup methods and spectral criteria, we derive explicit thresholds that determine when the system exhibits asymptotic stability and when it displays strong chaotic dynamics ...
Carlos Lizama   +2 more
wiley   +1 more source

EXTREME VALUES OF THE FIEDLER VECTOR ON TREES. [PDF]

open access: yesLinear Algebra Appl
Lederman RR, Steinerberger S.
europepmc   +1 more source

In Vivo Imaging With a Low‐Cost MRI Scanner and Cloud Data Processing in Low‐Resource Settings

open access: yesNMR in Biomedicine, Volume 39, Issue 6, June 2026.
This study presented the system evolution at MUST: (a) Scanner after the initial assembly in 2023. (b) First reconstructed image (bell pepper). Front (c), rear (d), and global (e) views of the MUST scanner in the 2025 configuration, highlighting the improved electronics setup, RF coils, and mechanical integration.
Teresa Guallart‐Naval   +18 more
wiley   +1 more source

Experimental realization of logical elastic bits as qubit analogues in a nonlinear oscillator. [PDF]

open access: yesSci Rep
Mahmood KT   +5 more
europepmc   +1 more source

Robustness Assessment of Public Transport Networks in Various Graph Representations: Systematic Review, Decision Support, and Case Study

open access: yesNetworks, Volume 87, Issue 4, Page 343-371, June 2026.
ABSTRACT The analysis of certain properties of the underlying graph of a public transport network generates insights about the network's structure. Hereby, the choice of the graph representation depends on a trade‐off between complexity reduction and information preservation to adequately model a public transport network.
Michael Palk   +2 more
wiley   +1 more source

Supporting multilingual learners in K‐12 STEM classrooms through formative assessments: A qualitative descriptive approach

open access: yesNatural Sciences Education, Volume 55, Issue 1, June 2026.
Abstract The growing number of multilingual learners (MLs) in science, technology, engineering, and mathematics (STEM) classrooms in the United States has compelled teachers to innovate their instructional and assessment practices to better meet the diverse and evolving needs of students. By centering teachers’ own interpretations and reflections, this
Bilgehan Ayik   +4 more
wiley   +1 more source

Multi‐Goal‐Oriented Anisotropic Error Control and Mesh Adaptivity for Time‐Dependent Convection‐Dominated Problems

open access: yesProceedings in Applied Mathematics and Mechanics, Volume 26, Issue 2, June 2026.
ABSTRACT In this work, we present an anisotropic multi‐goal error control based on the dual weighted residual (DWR) method for time‐dependent convection–diffusion–reaction (CDR) equations. Motivated by former work, we combine multiple goals to single error functionals with weights chosen as algorithmic parameters.
Markus Bause   +5 more
wiley   +1 more source

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