搜索结果: 151-165 共查到“理学 Noise”相关记录222条 . 查询时间(0.143 秒)
Extracting strong measurement noise from stochastic series: applications to empirical data
stochastic series noise empirical data
2010/4/6
It is a big challenge in the analysis of experimental data to disentangle the unavoidable measurement noise from the intrinsic dynamical noise. Here we present a general operational method to extract ...
Flicker-noise spectroscopy in earthquake prediction research
Flicker-noise spectroscopy earthquake prediction research
2009/12/11
The problem of earthquake prediction and the methods of identification of geophysical precursory signals are discussed. To get information on the dynamics of earthquake preparation processes, fluctuat...
Are the input parameters of white-noise-driven integrate-and-fire neurons uniquely determined by rate and CV?
white-noise-driven Integrate-and-fire coefficient of variation
2010/4/7
Integrate-and-fire (IF) neurons have found widespread applications in computational neuroscience. Particularly important are stochastic versions of these models where the driving consists of a synapti...
Perturbation theory for a stochastic process with Ornstein-Uhlenbeck noise
Noise diffusion annihilation/creationo perators
2010/4/8
The Ornstein-Uhlenbeck process may be used to generate a noise signal with a finite correlation time. If a one-dimensional stochastic process is driven by such a noise source, it may be analysed by so...
Detecting nonlinearity in time series driven by non-Gaussian noise:the case of river flows
nonlinearity time series non-Gaussian noise case of river flows
2009/11/11
Several methods exist for the detection of nonlinearity in univariate time series. In the present work we consider riverflow time series to infer the dynamical characteristics of the rainfall-runoff t...
Prebifurcation noise amplification and noise-dependent hysteresis as indicators of bifurcations in nonlinear geophysical systems
Prebifurcation noise amplification noise-dependent hysteresis nonlinear geophysical systems
2009/11/9
The phenomena of prebifurcation noise amplification and noise-dependent hysteresis are studied as prospective indicators of bifurcations ("noisy precursor") in nonlinear Geophysical systems. The pheno...
A conceptual ENSO model under realistic noise forcing
conceptual ENSO model realistic noise forcing
2009/11/9
We investigated the influence of atmospheric noise on the generation of interannual El Niño variability. Therefore, we perturbed a conceptual ENSO delay model with surrogate windstress data gen...
An attempt to find precursors in the ULF geomagnetic data by means of flicker noise spectroscopy
ULF geomagnetic data means of flicker noise spectroscopy
2009/11/9
The flicker noise spectroscopy which is a new phenomenological method for the retrieval of information contained in chaotic time signals, is based on the analysis of recognizable irregularities (pulse...
Multi-scale analysis of teleconnection indices:climate noise and nonlinear trend analysis
Multi-scale analysis teleconnection indices climate noise nonlinear trend analysis
2009/10/30
The multi-scale nature and climate noise properties of teleconnection indices are examined by using the Empirical Mode Decomposition (EMD) procedure. The EMD procedure allows for the analysis of non-s...
Multivariate Transfer Function-Noise Model of River Flow for Hydropower Operation
Transfer Function-Noise Model River Flow Hydropower Operation
2009/10/27
The formulation of multivariate autoregressive moving average (ARMA) time
series models and their transfer function noise (TFN) form is described. Development
of a multivariate TFN model is difficul...
Capacities of lossy bosonic channel with correlated noise
lossy bosonic channel correlated noise
2010/4/12
We evaluate the information capacities of a lossy bosonic channel with correlated noise. The model generalizes the one recently discussed in [Phys. Rev. A 77, 052324 (2008)], where memory effects come...
Noise-induced dynamic symmetry breaking and stochastic transitions in ABA molecules: II. Symmetric–antisymmetric normal mode switching
Dynamic symmetry breaking Stochastic transitions Symmetric-to-antisymmetric normal mode switching Environment induced dephasing Triatomic ABA molecules
2014/9/24
The second paper of the series discusses the effect of thermal noise on the stretching vibrational dynamics of symmetric triatomic ABA molecules. In particular, noise-induced transitions between symme...
Gap filling and noise reduction of unevenly sampled data by means of the Lomb-Scargle periodogram
Gap filling noise reduction Lomb-Scargle periodogram
2009/7/1
The Lomb-Scargle periodogram is widely used for the estimation of the power spectral density of unevenly sampled data. A small extension of the algorithm of the Lomb-Scargle periodogram permits the es...
Dynamical properties of a mutualism system in the presence of noise and time delay
time delay relaxation time correlation function mutualism system
2010/7/5
The normalized correlation function C(s) and the associated relaxation time Tc of the mutualism system in the presence of noise and time delay are investigated. The effects of noise and time delay on ...
Highly efficient energy excitation transfer in light-harvesting complexes: The fundamental role of noise-assisted transport
energy excitation light-harvesting complexes undamental role of noise-assisted transport
2010/4/9
Excitation transfer through interacting systems plays an important role in many areas of physics, chemistry, and biology. The uncontrollable interaction of the transmission network with a noisy enviro...