Results 61 to 70 of about 10,996,377 (201)

Chaotic Dynamics and Subharmonic Bifurcation of Charged Dilation-AdS Black Hole in Extended Phase Space Subject to Harmonic Excitation

Physics
In this paper, the chaotic behavior and subharmonic bifurcation in a dynamical model for charged dilation-AdS black holes are investigated in extended phase space using analytical and numerical methods.
Qinrui Chen, Liangqiang Zhou, Fengxian An   +2 more
doaj   +1 more source

Logic of Determinative Analysis of Agglutinative and Inflectional Languages (part 1)

Polylinguality and Transcultural Practices, 2021
A clear understanding of the systemic differences between interacting languages is necessary to study the interaction of languages in the mind of a bilingual (multilingual) personality and improve the practice of teaching languages in a transcultural ...
Olga I. Valentinova, Mikhail A. Rybakov
doaj   +1 more source

Democratizing Hydroclimate Science for Just and Resilient Futures

Earth's Future, Volume 14, Issue 8, August 2026.
Abstract Hydroclimatic extremes are intensifying, escalating risks to ecosystems, infrastructure, and vulnerable communities. Rapid technological innovation and scientific discovery offer powerful tools to address these challenges, yet a gap remains between hydroclimate knowledge production and its use in decision‐making.
K. M. Whitney, J. Cranko Page, A. Dengri, S. Hina, H. Okachi, V. Rabanal, J. Sirisena, Y. A. Yılmaz, P. N. Afego, A. Arshad, L. Baratgin, L. M. Cappelletti, C. N. Gulizia, S. M. A. Habib, Q. He, J. Hsu, M. R. Islam, S. Kulkarni, L. Lebedeva, S. K. Mandal, A. V. Matus, U. Mondal, P. L. Nguyen, U. K. Okoro, D. Pradhananga, M. Sabot, P. Saha, A. Suzuki, A. Tejada   +28 more
wiley   +1 more source

Analytical Threshold for Chaos of Piecewise Duffing Oscillator with Time-Delayed Displacement Feedback

Shock and Vibration, 2022
In this paper, the bifurcation and chaotic motion of a piecewise Duffing oscillator with delayed displacement feedback under harmonic excitation are studied.
Zhang Ming-Xin, Wang Jun, Shen Yong-Jun, Zhang Jian-Chao   +3 more
doaj   +1 more source

Solitary Waves of Moderate Amplitude and Dispersive Radiation in the Serre Equations: The Extended KdV–Whitham Approximation

Studies in Applied Mathematics, Volume 157, Issue 2, August 2026.
ABSTRACT We consider the extended Korteweg–de Vries (eKdV) equation as a model for long moderately nonlinear surface water waves and use it to describe the evolution of initial conditions generating solitary waves with and without significant dispersive radiation, as well as cases of pure dispersive radiation without any solitary waves.
Benjamin Martin, Dmitri Tseluiko, Karima Khusnutdinova   +2 more
wiley   +1 more source

Bifurcation and Chaos Prediction in Nonlinear Gear Systems

Shock and Vibration, 2014
The homoclinic bifurcation and transition to chaos in gear systems are studied both analytically and numerically. Applying Melnikov analytical method, the threshold values for the occurrence of chaotic motion are obtained.
Anooshirvan Farshidianfar, Amin Saghafi
doaj   +1 more source

Establishment of Permafrost Thermal Monitoring Sites in East Siberia

Land, 2020
Permafrost lies close to the surface of the day, therefore, it is able to quickly respond to modern climatic changes. Under these conditions, the goal of understanding the evolution of permafrost in the near future requires monitoring studies of the ...
Pavel Konstantinov, Mikhail Zhelezniak, Nikolay Basharin, Ivan Misailov, Varvara Andreeva   +4 more
doaj   +1 more source

Refined Modeling of Arctic Circumpolar Building Stock Increases Estimated Mid‐Century Permafrost Degradation Damages

Earth's Future, Volume 14, Issue 7, July 2026.
Abstract Near‐surface permafrost degradation has the potential to damage infrastructure needed to sustain Arctic communities, but risk assessments remain highly uncertain due to a limited representation of the Arctic circumpolar building stock. With deep learning building footprint detection and building occupancy classification models, we expand the ...
E. Manos, D. A. Streletskiy, C. Witharana, E. Haggerty, A. K. Liljedahl   +4 more
wiley   +1 more source

Splitting potential and Poincaré-Melnikov method for whiskered tori in Hamiltonian Systems [PDF]

, 1999
We deal with a perturbation of a hyperbolic integrable Hamiltonian system with n+1 degrees of freedom. The integrable system is assumed to have n-dimensional hyperbolic invariant tori with coincident whiskers (separatrices). Following Eliasson, we use a
Delshams Valdés, Amadeu, Gutiérrez Serrés, Pere   +1 more
core   +1 more source

Solitary-pulse regimes of solid-state laser additively mode locked by a cascading nonlinearity

, 1996
The steady-state additive mode locking of a laser incorporating phase-mismatched frequency converter in an external cavity is analyzed. The model includes a main cavity with a slowly bleaching lasing transition and a fiber with χ(2) grating, in the form ...
A. V. Shipulin, Melnikov, I.V., I. V. Mel’nikov, Shipulin, A.V.   +3 more
core   +1 more source