Results 61 to 70 of about 742,320 (261)

Scalable Platform Enabling Reservoir Computing With Nanoporous Oxide Memristors for Image Recognition and Time Series Prediction

Advanced Intelligent Systems, EarlyView.
The approach of physical in materia computing incorporates parallel computing within the medium itself. A scalable and energy‐efficient, oxide‐based computational platform is realized in form of a nanoporous network of volatile niobium oxide memristors sandwiched between top and bottom metallic electrodes, and then tested for prediction and ...
Joshua Donald, Ben A. Johnson, Amir Mehrnejat, Alex Gabbitas, Arthur G. T. Coveney, Alexander G. Balanov, Sergey Savel’ev, Pavel Borisov   +7 more
wiley   +1 more source

Improved Robust Stability Criteria of Uncertain Neutral Systems with Mixed Delays

Abstract and Applied Analysis, 2009
The problem of robust stability for a class of neutral control systems with mixed delays is investigated. Based on Lyapunov stable theory, by constructing a new Lyapunov-Krasovskii function, some new stable criteria are obtained.
Zixin Liu, Shu Lü, Shouming Zhong, Mao Ye   +3 more
doaj   +1 more source

Chaotic Properties of Dilute Two and Three Dimensional Random Lorentz Gases I: Equilibrium Systems

, 1997
We compute the Lyapunov spectrum and the Kolmogorov-Sinai entropy for a moving particle placed in a dilute, random array of hard disk or hard sphere scatterers - i.e. the dilute Lorentz gas model.
A. Crisanti, A. Latz, A. Latz, A. Weijland, A. Weijland, Arnulf Latz, C. Appert, C. Appert, C. Beck, C. Bruin, C. P. Dettmann, Ch. Dellago, Ch. Dellago, Ch. Dellago, D. J. Evans, D. J. Evans, D. Mannion, D. Ruelle, E. Courant, E. G. D. Cohen, E. G. D. Cohen, E. H. Hauge, G. Gallavotti, G. Vattay, H. Flanders, H. van Beijeren, H. van Beijeren, H. van Beijeren, H. van Beijeren, J. R. Dorfman, J. R. Dorfman, J. R. Dorfman, J. R. Dorfman, J.-P. Eckmann, L. A. Bunimovich, M. H. Ernst, N. I. Chernov, N. I. Chernov, N. S. Krylov, P. Dahlqvist, P. Dahlqvist, P. Gaspard, P. Gaspard, P. Gaspard, S. Chapman, V. I. Arnold, W. G. Hoover, Ya. G. Sinai   +47 more
core   +1 more source

Stepwise structure of Lyapunov spectra for many-particle systems using a random matrix dynamics [PDF]

Physical Review E, 2002
The structure of Lyapunov spectra for many particle systems with a random interaction between the particles is discussed. The dynamics of the tangent space is expressed as a master equation, which leads to a formula that connects the positive Lyapunov exponents and the time correlations of the particle interaction matrix.
Taniguchi, Tooru, Morriss, Gary P.
openaire   +3 more sources

“It Is Much Safer to Be Sparse than Connected”: Safe Control of Robotic Swarm Density Dynamics with PDE Optimization with State Constraints

Advanced Intelligent Systems, EarlyView.
This paper proposes a novel control framework to ensure safety of a robotic swarm. A feedback optimization controller is capable of driving the swarm toward a target density while keeping risk‐zone exposure below a safety threshold. Theory and experiments show how safety is more effectively achieved for sparsely connected swarms.
Longchen Niu, Gennaro Notomista
wiley   +1 more source

Critical exponent for the quantum spin Hall transition in Z_2 network model

, 2011
We have estimated the critical exponent describing the divergence of the localization length at the metal-quantum spin Hall insulator transition. The critical exponent for the metal-ordinary insulator transition in quantum spin Hall systems is known to ...
Kobayashi, K., Ohtsuki, T., Slevin, K.
core   +1 more source

Controlling Dynamical Systems Into Unseen Target States Using Machine Learning

Advanced Intelligent Systems, EarlyView.
Parameter‐aware next‐generation reservoir computing enables efficient, data‐driven control of dynamical systems across unseen target states and nonstationary transitions. The approach suppresses transient behavior while navigating system collapse scenarios with minimal training data—over an order of magnitude less than traditional methods.
Daniel Köglmayr, Alexander Haluszczynski, Christoph Räth   +2 more
wiley   +1 more source

A comparative study of computation of Lyapunov spectra with different algorithms

, 1999
In this paper we make a detailed numerical comparison between three algorithms for the computation of the full Lyapunov spectrum as well as the associated eigen-vectors of general dynamical systems.
Ramasubramanian, K., Sriram, M. S.
core   +1 more source

Wearable exoskeleton robot control using radial basis function‐based fixed‐time terminal sliding mode with prescribed performance

Asian Journal of Control, EarlyView.
Abstract This paper tackles the problem of robust and accurate fixed‐time tracking in human–robot interaction and deals with uncertainties. This work introduces a control approach for a wearable exoskeleton designed specifically for rehabilitation tasks.
Mahmoud Abdallah, Yassine Kali, Maarouf Saad, Raouf Fareh, Maamar Bettayeb   +4 more
wiley   +1 more source

EXPONENTIAL STABILITY CONTROL FOR NETWORKED SYSTEMS WITH INTERVAL DISTRIBUTION TIME DELAYS [PDF]

Acta Informatica Malaysia, 2018
To study the problem of exponential stability control for a class of networked control systems with interval distribution time delays, a new approach is given to model the networked control systems with the stochastic time delays which is assumed to be
Hejun, Fushun
doaj   +1 more source