搜索结果: 136-150 共查到“理学 Noise”相关记录222条 . 查询时间(0.079 秒)
Thermal noise engines
Johnson-Nyquist noise fluctuation-dissipation energy-harvesting quantum heat engines
2010/10/27
Electrical heat engines driven by the Johnson-Nyquist noise of resistors are introduced.
They utilize Coulomb's law and the fluctuation-dissipation theorem of statistical physics that is the reverse ...
Restricted strong convexity and weighted matrix completion: Optimal bounds with noise
Restricted strong convexity weighted matrix completion Optimal bounds with noise
2010/12/3
We consider the matrix completion problem under a form of row/column weighted entrywise sampling, including the case of uniform entrywise sampling as a special case.We analyze the associated random ob...
Retrieval of Moho-reflected shear wave arrivals from ambient seismic noise
Interferometry Body waves Crustal structure
2014/4/10
Theoretical studies on ambient seismic noise (ASN) predict that complete Green’s function between seismic stations can be retrieved from cross correlation. However, only fundamental mode surface waves...
On the effect of multiplicative noise in a supercritical pitchfork bifurcation
multiplicative noise supercritical pitchfork bifurcation
2010/4/21
The most important characteristic of {\em multiplicative noise} is that its effects of system's dynamics depends on the recent system's state. Consideration of multiplicative noise on self-referential...
Characterizing mixed mode oscillations shaped by noise and bifurcation structure
mixed mode oscillations underlying dynamical structure extrinsic noise
2010/4/2
Many neuronal systems and models display a certain class of mixed mode oscillations (MMOs) consisting of periods of small amplitude oscillations interspersed with spikes. Various models with different...
Noise-Induced Dynamic Symmetry Breaking and Stochastic Transitions in ABA Molecules: I. Classification of Vibrational Modes
Noise-Induced Dynamic Symmetry Breaking Stochastic Transitions in ABA Molecules Classification of Vibrational Modes
2014/9/24
The dissipative vibrational dynamics of a symmetric triatomic ABA molecule is extensively studied in a series of three papers. The momentum-dependent rotor model is used to describe the dynamical beha...
Synchronization Transition in the Kuramoto Model with Colored Noise
Synchronization Transition Colored No Kuramoto Model
2010/4/6
We present a linear stability analysis of the incoherent state in a system of globally coupled, identical phase oscillators subject to colored noise. In that we succeed to bridge the extreme time scal...
Modeling scaled processes and 1/f^b noise by the nonlinear stochastic differential equations
nonlinear stochastic differential power-law distributions
2010/4/2
We present and analyze stochastic nonlinear differential equations generating signals with the power-law distributions of the signal intensity, 1/f^b noise, power-law autocorrelations and second order...
Investigation of a Design Modification for Double Helical Gears Reducing Vibration and Noise
tooth profile modification tooth longitudinal modification double helical gears loaded transmission error
2011/9/9
To reduce vibration and noise and increase transmission efficiency, a three segment method for modifying the pinion profile was proposed. Cutter surface equations were deduced by changing the shape of...
1/f noise from nonlinear stochastic differential equations
1/f noise nonlinear stochastic differential equations
2010/4/2
We consider a class of nonlinear stochastic differential equations, giving the power-law behavior of the power spectral density in any desirably wide range of frequency. Such equations were obtained s...
Effective phase dynamics of noise-induced oscillations in excitable systems
phase dynamics noise-induced oscillations excitable systems
2010/4/1
We develop an effective description of noise-induced oscillations based on deterministic phase dynamics. The phase equation is constructed to exhibit correct frequency and distribution density of nois...
Noise resilient quantum interface based on QND interaction
quantum interface Noise resilient quantum-non-demolition interactions
2010/3/10
We propose a quantum interface protocol based on two quantum-non-demolition interactions (QND) arranged either in sequence or in parallel. Since the QND coupling arises naturally in interactions betwe...
Asymptotic equivalence and sufficiency for volatility estimation under microstructure noise
High-frequency data integrated volatility spot volatility estimation Le Cam defciency equivalence of experiments Gaussianshift
2010/4/27
The basic model for high-frequency data in finance is considered, where an efficient price process is observed under microstructure noise. It is shown that this nonparametric model is in Le Cam's sens...
Modeling non-Gaussian 1/f Noise by the Stochastic Differential Equations
non-Gaussian 1/f Noise Stochastic Differential Equations
2010/4/1
We consider stochastic model based on the linear stochastic differential equation with the linear relaxation and with the diffusion-like fluctuations of the relaxation rate. The model generates monofr...
Quantum noise and self-sustained radiation of PT-symmetric systems
Quantum noise self-sustained radiation PT-symmetric systems
2010/3/10
The observation that PT-symmetric Hamiltonians can have real-valued energy levels even if they are non-hermitian has triggered intense activities, with experiments in particular focusing on optical sy...