Results 261 to 270 of about 806,938 (302)

Nonlinear dynamical analysis of speech

The Journal of the Acoustical Society of America, 1996
This paper reports results of the estimation of dynamical invariants, namely Lyapunov exponents, dimension, and metric entropy for speech signals. Two optimality criteria from dynamical systems literature, namely singular value decomposition method and the redundancy method, are used to reconstruct state space trajectories of speech and make ...
Arun Kumar, S. K. Mullick
openaire   +1 more source

Nonlinear flight dynamics analysis

Philosophical Transactions of the Royal Society of London. Series A: Mathematical, Physical and Engineering Sciences, 1998
This introduction has two aims. First, it begins the issue with an overview of how modern nonlineardynamics analysis techniques may be of benefit to the flight dynamicist.
openaire   +1 more source

Nonlinear Dynamics Analysis through Molecular Dynamics Simulations

2004
A general goal in multiscale modeling is to analyze macroscale (system-level) phenomena using information on the system at the microscale. In this pedagogical note we revisit the time-stepper approach to performing nonlinear dynamics analysis through the use of a microscopic simulator, molecular dynamics in this case. Using simple illustrative examples
Ioannis G. Kevrekidis, Ju Li, Sidney Yip
openaire   +1 more source

Stereotyped human behavior: A nonlinear dynamical analysis

Journal of Behavior Therapy and Experimental Psychiatry, 1994
Some forms of stereotyped human behavior seem to occur randomly in time. A dynamical analysis of several topographies demonstrates that while such stereotypies have the spectral characteristics of random noise, the rate at which each subject exhibits his/her stereotypy is to some extent predictable and, unlike uncorrelated noise, prediction accuracy ...
W C, Kropla, D, Yu, L L, Ross, R, Ward
openaire   +2 more sources

NONLINEAR DYNAMICS ANALYSIS OF TRAFFIC TIME SERIES

Modern Physics Letters B, 2004
Traffic flow shows various complex behaviors. Numerous empirical data and numerical simulation results demonstrate the existence of distinct dynamics states. In order to obtain insight into the nature of the dynamics, we apply the nonlinear time series analysis approach to study the characteristic behavior of traffic flow at low and intermediate ...
Li, Keping, Gao, Ziyou
openaire   +1 more source

Dynamic and Nonlinear Static Analysis

2018
Chapter four focused on demonstration the basics of structural dynamic and explain the fundamental process to determine structural seismic response. In order to have a clear comprehending of the highlighted concepts within this book, it is tried to present the application of theories and calculation processes in a real buildings in all sections ...
Farzad Hejazi, Keyhan Karimzadeh
openaire   +1 more source

Nonlinear Dynamical Analysis of Periodic Lateralized Epileptiform Discharges

Clinical Electroencephalography, 1998
Nonlinear time series analysis can be used to investigate the dynamics underlying the generation of EEG signal. In the present study we used this approach to study the pathophysiology of PLEDs. We calculated the correlation dimension D2 of an EEG with typical PLEDs, and compared the results with those obtained for surrogate data.
Stam, C J, Nicolai, J, Keunen, R W
openaire   +4 more sources

Nonlinear Analysis of Intervertebral Disk Under Dynamic Load

Journal of Biomechanical Engineering, 1990
This study pertains to the response of intervertebral joint under dynamic axial load. The numerical model represents two vertebral bodies with an interposed disk and uses three-dimensional elements. A transversely isotropic material law is adopted for cortical bone and an isotropic law for cancellous bone.
NATALI A., MEROI, EMILIO
openaire   +4 more sources

Incremental Dynamic Analysis: A Nonlinear Stochastic Dynamics Perspective

Journal of Engineering Mechanics, 2016
AbstractAn efficient stochastic incremental dynamic analysis (IDA) methodology for nonlinear/hysteretic oscillators is developed by resorting to nonlinear stochastic dynamics concepts and tools such as stochastic averaging and statistical linearization.
Ketson R. M. dos Santos, Ioannis A. Kougioumtzoglou, André T. Beck   +2 more
openaire   +1 more source

Nonlinear dynamic analysis of curved beams

Computer Methods in Applied Mechanics and Engineering, 1980
Abstract A computational procedure is presented for predicting the dynamic response of curved beams with geometric nonlinearities. A mixed formulation is used with the fundamental unknowns consisting of stress resultants, generalized displacements and velocity components.
Noor, Ahmed K., Knight, Norman F. jun.
openaire   +1 more source