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时间相关函数
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  time correlation function
     The time correlation function of concentration fluctuation for PSt-DVB having wave vector q is proved to have the form of an exponential decay. The average decay rate is given by г= q2D.
     该微粒的浓度涨落时间相关函数在波矢为q时,有指数衰减形式,其衰减速率г=q~2D_t.
短句来源
     We have shown nonexistence of symmetry with respect to time reversal of the time correlation function of the steady state.
     证明了定态时间相关函数不存在时间反演对称性。
短句来源
     The features of reversible and irreversible process under mechanical turbulence are described using time correlation function and correlation time of statistical thermodynamics. The relation between the irreversible process and loss in system is discussed.
     应用统计热力学中的时间相关函数和关联时间阐述了力学扰动下体系的不可逆与可逆过程的特征以及不可逆过程与体系的损耗之间的关系 .
短句来源
  “时间相关函数”译为未确定词的双语例句
     SPACE-TIME CORRELATION FUNCTION OF SCATTERED FIELDS
     散射场的空间-时间相关函数
短句来源
     In TRTM, time is introduced as a metric to measure the dynamic of trust.
     时间相关信任模型通过引入时间维度支持动态信任关系的表达,通过定义时间相关函数强化模型对信任关系动态性的描述能力,同时定义了信任计算的相关操作。
短句来源
     We have shown that the breakdown of time reversal symmetry results in the invalidity of the Onsager reciproeity relations for the generalized susceptibility.
     根据定态时间相关函数时间反演对称性破缺,证明了对广义极化率的Onsager倒易关系不成立。
短句来源
     2) the possibility of the generation of superfluorescence is theoretically verified by the analysis of the linear stability of the thermo-dynamic Maxwell-Bloch equations, and the coherent process of superfluorescence is analysed by the temporal coherence function of the field of radiation obtained: 3) the effective initial tipping angle θ0 and the delay time τD are derived from the fluctuation in statistical thermodynamics.
     通过对热力学Maxwell-Bloch方程的线性稳定性分析从理论上证实了超荧光产生的可能性,并用得出的辐射场时间相关函数分析了它的相干过程; 应用统计热力学涨落公式,导出了有效的初始tipping角θ.
短句来源
     The average decay rates (linewidth) Γ decreased pronouncedly during the gelation and the lg plots of β1/2g(1)(τ) vs τ were nonlinear, which indicated complex motion models in this aqueous system, where g(1)(τ) and τ were normalized electric field autocorrelation function and delay time, respectively.
     表现出随反应进行,平均衰减速率(线宽)Γ明显减慢及以lgβ1/2g(1)(τ)对τ作图表明体系运动模式复杂的特点,这里g(1)(τ)和τ分别是归一化电场时间相关函数及延迟时间。
短句来源
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  相似匹配句对
     SPACE-TIME CORRELATION FUNCTION OF SCATTERED FIELDS
     散射场的空间-时间相关函数
短句来源
     The Correlation-Immune Functions
     相关免疫函数
短句来源
     Analyze Auto-correlations and Partial-correlations Function in time Series
     时间序列中自相关与偏相关函数分析
短句来源
     ON THE CORRELATION FUNCTIONS OF M-SEQUENCES
     关于M序列的相关函数
短句来源
     Time
     时间
短句来源
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  temporal correlation function
On the basis of this solution, the intensity temporal correlation function and the coherent backscattering are described.
      
For the temporal correlation function, the initial decay law is shown to be of a universal character in complete agreement with the experiment.
      
The Milne problem solution for the temporal correlation function of an electromagnetic field
      
A new type of spatio-temporal correlation function for the process approaching the self-organized criticality is investigated within the Bak-Sneppen model for biological evolution.
      
We derive a characteristic functional, which provides any arbitrary spatio-temporal correlation function of the teleported field, and calculate the fidelity of the teleportation scheme for multimode Gaussian input states.
      
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  time correlation function
The time correlation function of a noise signal propagating in an arctic-type waveguide is considered.
      
The shape of the envelope of the time correlation function is studied for the coherent and reference signals.
      
Measurement of the space-time correlation function of thermal acoustic radiation
      
The space-time correlation function of thermal acoustic radiation pressure is measured for a stationary heated source (a narrow plasticine plate).
      
For the scalar field, the solution found for the time correlation function and the interference component of backscattering is in good agreement with available experimental data.
      
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A method for finding the statistical properties of scattered fields caused by scatterers is established. The chief points of this method are the applications of the theory of random time-varying networks and the theory of streams of random events in queueing theory. An expression of space-time correlation function of scattered fields is established by this method. More factors, such as the random motions of scatterers, the statistical dependence between these motions, the inhomogeneities (including stratified...

A method for finding the statistical properties of scattered fields caused by scatterers is established. The chief points of this method are the applications of the theory of random time-varying networks and the theory of streams of random events in queueing theory. An expression of space-time correlation function of scattered fields is established by this method. More factors, such as the random motions of scatterers, the statistical dependence between these motions, the inhomogeneities (including stratified inhomogeneity) of propagation medium, the dispersion and absorption by the medium, the differences between scatterers, and the like, are taken into account in this expression. These factors are always unnegligible in most practical problems. Moreover, the functional forms of transmitted signals, directivity of radiation, spatial distribution of scatterers, scattering coefficients, etc. are unrestricted in this expression.As an example, the statistical properties of back scattering of underwater sound by the bubbles, the random motions of which are caused by the waves, are studied.

本文提出了一种寻求散射体羣的散射场的统计性质的方法.该法要点在于运用随机时变网络理论及排队论中关于随机事件流的理论.借助于此法,本文建立了散射场的空间-时间相关函数的表示式.与其他作者已建立的公式相较,该式计及一系列常为实际问题所不容忽略的因素,例如诸散射体的随机变速运动及其间的统计关联,传播媒质的非均匀性(包括分层非均匀性)、吸收及色散,以及诸散射体性质的相异性等等,并且对发射信号、辐射方向性、散射体羣的空间分布及散射系数等等的函数形式均未给予任何限制.

In this paper the problems of linear response of system at nonequilibrium steady state to mechanical perturbations are discussed in Zubarev's nonequilibrium statistical operator. For simplicity, only nonequilibrium steady state to the first approximation is examined. Main conclusions are as follows: Commutation property of the statistical operator and Hamiltonian of steady state has been proved, and the time stationarity of time correlation function of the steady state has also been proved. We have derived the...

In this paper the problems of linear response of system at nonequilibrium steady state to mechanical perturbations are discussed in Zubarev's nonequilibrium statistical operator. For simplicity, only nonequilibrium steady state to the first approximation is examined. Main conclusions are as follows: Commutation property of the statistical operator and Hamiltonian of steady state has been proved, and the time stationarity of time correlation function of the steady state has also been proved. We have derived the fluctuation-dissipation theorem with reference to the nonequilibrium steady state. We have shown nonexistence of symmetry with respect to time reversal of the time correlation function of the steady state. We have shown that the breakdown of time reversal symmetry results in the invalidity of the Onsager reciproeity relations for the generalized susceptibility. Since the causality principle is satisfied in the nonequilibrium steady state, the dispersion relations for the generalized susceptibility still holds true, as proved in my paper.

本文是用Zubarev非平衡统计算子讨论处于非平衡定态的系统在受到力学拢动时的线性响应问题。仅限于讨论一级近似下的非平衡定态。主要结论是:证明了定态统计算子与定态哈密顿对易,从而证明了定态时间相关函数的稳恒性。导出了以定态为参考态的起伏耗散定理。证明了定态时间相关函数不存在时间反演对称性。根据定态时间相关函数时间反演对称性破缺,证明了对广义极化率的Onsager倒易关系不成立。根据因果律在定态得到满足,证明了对广义极化率的色散关系仍然成立。

The solution properties for Poly(styrene-divinylbenzene) (PSt-DVB) in toluene and cyclo-hexane have been studied by photon correlation spectroscopy. The time correlation function of concentration fluctuation for PSt-DVB having wave vector q is proved to have the form of an exponential decay. The average decay rate is given by г= q2D. The variant rate of decay rate is zero within thhe accuracy errors. The first time correlation function of scattering field was analyzed by the method of cumulant. We obtained the...

The solution properties for Poly(styrene-divinylbenzene) (PSt-DVB) in toluene and cyclo-hexane have been studied by photon correlation spectroscopy. The time correlation function of concentration fluctuation for PSt-DVB having wave vector q is proved to have the form of an exponential decay. The average decay rate is given by г= q2D. The variant rate of decay rate is zero within thhe accuracy errors. The first time correlation function of scattering field was analyzed by the method of cumulant. We obtained the diffusion coefficient of PSt-DVB particle as a function of the concentration and tempera ure. The hydrodynamic radii for the particle in the good solvent, and the theta solvent, were calculated by means of Stokes-Einstein equation. The molecular morphology for PSt-DVB particle in solution was also studied.

本文用光子相关光谱技术研究了聚苯乙烯-二乙烯基苯(PSt-DVB)共聚超微粒的溶液性质.该微粒的浓度涨落时间相关函数在波矢为q时,有指数衰减形式,其衰减速率г=q~2D_t.在精确的实验误差范围内,衰减速率的变化率为零。用累积量方法解析散射场的一阶时间相关方程,得到了作为浓度和温度函数的微粒扩散常数.与流体办学方程结合,计算出了微粒的流体力学尺寸.通过实验也确定了微粒在良溶剂中的分子形态.

 
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