Results 31 to 40 of about 674,252 (208)

Effects of additive noise on the stability of glacial cycles

, 2016
It is well acknowledged that the sequence of glacial-interglacial cycles is paced by the astronomical forcing. However, how much is the sequence robust against natural fluctuations associated, for example, with the chaotic motions of atmosphere and ...
Crucifix, Michel, Mitsui, Takahito
core   +1 more source

Data assimilation in slow-fast systems using homogenized climate models [PDF]

, 2011
A deterministic multiscale toy model is studied in which a chaotic fast subsystem triggers rare transitions between slow regimes, akin to weather or climate regimes.
Ambaum, Anderson, Anderson, Anderson, Anderson, Anderson, Bergemann, Berner, Berner, Branstator, Buizza, Cheng, Cornick, Corti, Crommelin, Crommelin, Crommelin, Crommelin, Ditlevsen, Egger, Ehrendorfer, Evensen, Evensen, Franzke, Franzke, Franzke, Franzke, Frederiksen, Gardiner, Georg A. Gottwald, Givon, Golub, Hamill, Hamill, Harlim, Harlim, Hasselmann, Hsu, Imkeller, Kalnay, Khasminsky, Kimoto, Kleeman, Kondrashov, Kramers, Kurtz, Kwasniok, Legras, Leith, Lewis Mitchell, Li, Lin, Lin, Lorenz, Lorenz, Luzzatto, Majda, Majda, Majda, Majda, Majda, Melbourne, Palmer, Palmer, Papanicolaou, Pavliotis, Pavliotis, Plant, Shutts, Siegert, Simon, Stemler, Stephenson, Sura, Sura, Talagrand, Tippett, Tucker, Wang, Wilks, Wilks, Wirth, Zwanzig   +82 more
core   +1 more source

Exploration of Half‐Cycle Length of Converging Circular Wavy Duct with Diverging‐Outlet: Turbulent Water Dynamics

Advanced Theory and Simulations, EarlyView.
Increasing half‐cycles intensifies turbulence due to enhanced vortex interactions and flow separation at the diverged‐outlets. Longer wavy ducts are shown to increase flow acceleration, resulting in greater output velocities and more turbulent‐kinetic‐energy production. Wave‐period plays a crucial role in determining turbulent intensity, with amplitude
I. L. Animasaun, Taseer Muhammad, Se‐Jin Yook   +2 more
wiley   +1 more source

FMint: Bridging Human Designed and Data Pretrained Models for Differential Equation Foundation Model for Dynamical Simulation

Advanced Theory and Simulations, EarlyView.
FMint is introduced as a multi‐modal foundation model that integrates human‐designed solvers and data‐driven methods for fast, accurate simulation of dynamical systems. FMint leverages in‐context learning within a transformer‐based framework to refine coarse numerical solutions.
Zezheng Song, Jiaxin Yuan, Haizhao Yang
wiley   +1 more source

Epileptiform Activity and Seizure Risk Follow Long‐Term Non‐Linear Attractor Dynamics

Advanced Science, EarlyView.
This study leverages the HAVOK framework to model long‐term, nonlinear attractor dynamics underlying epileptiform activity and seizure risk in epilepsy patients. By identifying key forcing mechanisms driving chaotic transitions, the findings improve seizure risk forecasting over multi‐day cycles and provide a pathway for personalized, data‐driven ...
Richard E Rosch, Brittany Scheid, Kathryn A Davis, Brian Litt, Arian Ashourvan   +4 more
wiley   +1 more source

Preface - Personal perspectives in nonlinear science : Looking back, looking forward [PDF]

, 2017
Peer reviewedPublisher ...
Govindarajan, Rama, Grebogi, Celso, Gross, Thilo, Lakshmanan, M., Mindlin, Gabriel B., Roy, Rajarshi, Sreenivasan, K. R.   +6 more
core  

Analysis of stationary points and their bifurcations in the ABC flow

, 2018
Analytical expressions for coordinates of stationary points and conditions for their existence in the ABC flow are received. The type of the stationary points is shown analytically to be saddle-node.
Didov, A. A., Uleysky, M. Yu.
core   +1 more source

A Bead‐Based Quantum Dot Immunoassay Integrated with Multi‐Module Microfluidics Enables Real‐Time Multiplexed Detection of Blood Insulin and Glucagon

Advanced Science, EarlyView.
The quantum dot integrated real‐time ELISA or QIRT‐ELISA system integrates a bead‐based quantum dot‐mediated immunoassay (BQI) with a modular microfluidic system to continuously monitor insulin and glucagon in whole blood samples and in a multiplexed setting.
Hesam Abouali, Sanjana Srikant, Md Fahim Al Fattah, Nicole G. Barra, Darryl Chan, Dayan Ban, Jonathan D. Schertzer, Mahla Poudineh   +7 more
wiley   +1 more source

How single neuron properties shape chaotic dynamics and signal transmission in random neural networks

, 2019
While most models of randomly connected networks assume nodes with simple dynamics, nodes in realistic highly connected networks, such as neurons in the brain, exhibit intrinsic dynamics over multiple timescales.
Gerstner, Wulfram, Muscinelli, Samuel P., Schwalger, Tilo   +2 more
core   +1 more source

Versatile and Robust Reservoir Computing with PWM‐Driven Heterogenous R–C Circuits

Advanced Science, EarlyView.
A robust physical reservoir computing (PRC) system using pulse‐width modulation (PWM)‐encoded R–C circuits is introduced. By enabling customizable nonlinearities and timescales, this system achieves state‐of‐the‐art accuracy in chaotic, multiscale, and multiclass tasks while maintaining stability across temperature variations and device batches.
Zelin Ma, Huasen Yi, Ziping Zheng, Zhanyi Chen, Weicheng Liu, Yibing Chen, Bojun Cheng, Chang Cai, Shusheng Pan, Jun Ge   +9 more
wiley   +1 more source