Results 81 to 90 of about 84,386 (283)

CFD modeling and sensitivity‐guided design of silicon filament CVD reactors

AIChE Journal, EarlyView.
Abstract Filament‐based chemical vapor deposition (CVD) for silicon (Si) coatings is often treated as an adaptation of planar deposition. But this overlooks fundamental shifts in transport phenomena and reaction kinetics. In filament CVD, the filament acts as a substrate, heat source, and flow disruptor simultaneously. In this work, we ask: What really
G. P. Gakis, G. Loachamín‐Suntaxi, I. G. Aviziotis, E. D. Koronaki, P. P. Filippatos, G. Chatzigiannakis, S. P. A. Bordas, D. Davazoglou, A. G. Boudouvis   +8 more
wiley   +1 more source

Chaos and its quantization in dynamical Jahn-Teller systems

, 2003
We investigate the $E_g \otimes e_g$ Jahn-Teller system for the purpose to reveal the nature of quantum chaos in crystals. This system simulates the interaction between the nuclear vibrational modes and the electronic motion in non-Kramers doublets for ...
A. Bulgac, A. Bulgac, A. Bulgac, Akira Terai, C. A. Mead, D. Kusnezov, H. Koizumi, H.C. Longuet-Higgins, Hisatsugu Yamasaki, Katsuhiro Nakamura, M. Berry, M. C. M. O’Brien, M. Robnik, M. V. Berry, M. V. Berry, O. Bohigas, S. Washimiya, T. Prosen, T. Takami, Yuhei Natsume   +19 more
core   +1 more source

Suppressing Chaos of Duffing‐Holmes System Using Random Phase [PDF]

Mathematical Problems in Engineering, 2011
The effect of random phase for Duffing‐Holmes equation is investigated. We show that as the intensity of random noise properly increases the chaotic dynamical behavior will be suppressed by the criterion of top Lyapunov exponent, which is computed based on the Khasminskii′s formulation and the extension of Wedig′s algorithm for linear stochastic ...
openaire   +2 more sources

A Unifying Approach to Self‐Organizing Systems Interacting via Conservation Laws

Advanced Intelligent Discovery, EarlyView.
The article develops a unified way to model and analyze self‐organizing systems whose interactions are constrained by conservation laws. It represents physical/biological/engineered networks as graphs and builds projection operators (from incidence/cycle structure) that enforce those constraints and decompose network variables into constrained versus ...
F. Barrows, G. Zhang, S. Anand, Z. Chen, J. Lin, A. Desai, S. Martiniani, F. Caravelli   +7 more
wiley   +1 more source

Desynchronization of systems of coupled Hindmarsh-Rose oscillators [PDF]

, 2011
It is widely assumed that neural activity related to synchronous rhythms of large portions of neurons in specific locations of the brain is responsible for the pathology manifested in patients' uncontrolled tremor and other similar diseases.
Gjurchinovski, Aleksandar, Urumov, Viktor, Vasilkoski, Zlatko   +2 more
core   +1 more source

Exact Dynamical and Partial Symmetries

, 2010
We discuss a hierarchy of broken symmetries with special emphasis on partial dynamical symmetries (PDS). The latter correspond to a situation in which a non-invariant Hamiltonian accommodates a subset of solvable eigenstates with good symmetry, while ...
A Leviatan, Alhassid Y, Bohm A, Iachello F, Iachello F, Leviatan A   +5 more
core   +1 more source

Device‐Level Implementation of Reservoir Computing With Memristors

Advanced Intelligent Systems, EarlyView.
Reservoir computing (RC) is an emerging computing scheme that employs a reservoir and a single readout layer, which can be actualized in the nanoscale with memristors. As a comprehensive overview, the principles of RC and the switching mechanisms of memristors are discussed, followed by actual demonstrations of memristor‐based RC and the remaining ...
Sunbeom Park, Hyojung Kim, Ho Won Jang
wiley   +1 more source

Method of Weak Signals Detection Based on Chaos Suppression in the Nonresonant Parametric Drive

Journal of Measurement Science and Instrumentation, 2011
The evolution of chaotic state of Lorenz system on the familiar parameter space orbit is analyzed.Based on the principle of chaos suppression with nonresonant parametric drive,the model of detecting weak periodic signals in strong noise is built ...
Bin FAN, Niao-qing HU, Xiao-fei ZHANG
doaj  

Performance enhanced design of chaos controller for the mechanical centrifugal flywheel governor system via adaptive dynamic surface control

AIP Advances, 2016
This paper addresses chaos suppression of the mechanical centrifugal flywheel governor system with output constraint and fully unknown parameters via adaptive dynamic surface control.
Shaohua Luo, Zhiwei Hou, Tao Zhang
doaj   +1 more source

Quantification of depth of anesthesia by nonlinear time series analysis of brain electrical activity

, 2000
We investigate several quantifiers of the electroencephalogram (EEG) signal with respect to their ability to indicate depth of anesthesia. For 17 patients anesthetized with Sevoflurane, three established measures (two spectral and one based on the ...
A. Hoeft, B. Rehberg, C. E. Elger, D. Ruelle, D.J. Sheskin, G. Widman, G. Widman, G. Widman, H. Kantz, H. Schwilden, I.J. Rampil, I.J. Rampil, J. Muthuswamy, K. Lehnertz, L.D. Iasemidis, M. Steriade, N. Schaul, P. Grassberger, P. Grassberger, P.S. Sebel, T. Katoh, T. Schreiber, T. Schreiber, W.J. Levy   +23 more
core   +1 more source