提出了随机结构响应密度演化分析的映射降维算法。
A mapping-based dimension-reduction algorithm for probability density evolution analysis of stochastic structural responses is proposed.
用序累积方法推导了系统的联合几率密度演化方程。
Using the ordered cumulant technique, we obtain the differential equation for the joint probability density.
提出了随机荷载作用下随机结构线性静力反应的概率密度演化方法。
Probability density evolution method for the analysis of linear stochastic structural static response under random loading is proposed.
结合密度演化方法，还研究了两个自相似网络流中的反馈排队模型。
The density evolution method is used to handle the self-similar queueing models.
黑洞按新以太的假设，黑洞的以太密度演化的极端形式，黑洞最初不过是个夸克。
According to the new ether hypothesis, the black hole is the extreme form of evolution of ether density that was just a quark at the beginning.
密度演化方法是一类直接获取随机结构动力反应概率密度函数及其演化过程的有效方法。
The probability density evolution equation (PDEE) of the stochastic structural response is then established by introducing augmented state vector.
随机结构反应的概率密度演化方法能够给出随机荷载作用下随机结构反应的概率密度函数。
The probability density function of the stochastic structural response can be obtained by the probability density evolution method.
为提高复杂工程系统的风险评估和计算效率，对工程系统中复杂性和信息密度演化进行研究。
The methodology is to use the information entropy to measure the risk degree of complex engineering system, and evaluate its relativity with information density evolution.
利用概率分析和随机模型的密度演化方法，导出了系统的一些新的可靠性指标和最优检测策略。
The new system reliability indices and the optimal inspection policy are obtained by using probability analysis and the density evolution method in stochastic.
将股市上扬的天数转化为随机游程的长度，利用密度演化方法求得了股市上扬天数的分布以及均值和方差。
Through the probability density evolution method, the instantaneous probability density function of response of double random vibration systems is numerically obtained.
基于概率密度演化的基本思想，构造一个虚拟随机过程，使得随机结构动力反应的极值为该虚拟随机过程的截口随机变量。
A virtual stochastic process is constructed so that the basic random variable becomes the value of the stochastic process at certain instants of time.
在分析和阐述了离散概率密度演化理论和多维线性空间极值问题的基础上，给出了适合于该方案的非正则ldpc码的搜索算法和搜索结果。
By analyzing the discretized density evolution theory and the differential evolution algorithm, a method is proposed to search optimal irregular LDPC code for joint optimization of the system.
密度矩阵i。初始非本征态的准备、演化、探试。
Density Matrices I. Initial Non-Eigenstate Preparation, Evolution, Detection.
用裂隙密度分形维数定量描述了巷道围岩裂隙的分布和演化。
The crack distribution and evolution of the surrounding rocks of roadway can be quantitatively depicted by the fractal dimension of crack density.
因此，中微子是否具有静止质量，将极大地影响着宇宙中的质量密度，从而影响着宇宙演化的进程。
Hence, the rest-mass of the neutrino being non-vanishing would influence greatly the mass density and further the evolution of the universe.
文中给出了损伤机构离散化的方法，并对方位密度给出了演化方程。
A method for discreted description of damage mechanism is given, and the evolution equation of discreted orientation density of cracks is obtained.
根据系统密度矩阵，讨论了系统熵随时间的演化和系统光子统计性质。
According to the system density matrix, discussed the evolution of the system entropy with time and photon statistical properties of the system.
在该方法中，方程的演化速度是由条纹的密度决定的。
The diffusion speed of the equation is determined based on the fringe density.
本文讨论了材料退化失效的基本概念，给出了微观结构随机演化的动力学方程，统一导出了失效几率，可靠性、失效几率密度、失效率和平均寿命。
Some key concepts in degradated failure of materials is discussed. The stochastic evolution equation of defect clusters is given and the failure probability reliability and failure rate are derived.
针对以缺陷密度为参量的细观损伤演化模型的局限性，着重研究了微裂纹尺寸对损伤演化的影响。
The effect of the microcracks size on damage evolution was investigated to overcome the limitations of damage models based only on defect density.
研究了电磁波、朗缪尔波与离声波在相互作用中的能量密度谱随时间的演化；
Furthermore, the energy density spectrum for electromagnetic wave, Langmuir wave and ion acoustic wave are obtained and used to interpret spectra evolution with time.
其次，研究了密度比对两相平面剪切层演化的影响。
获得了不同靶材料等离子体的靶面法向电子密度分布，以及铜等离子体电子密度的时间演化。
We have obtained the electron density distribution in the normal direction of different targets. The time evolution of electron density of Cu plasma has been obtained.
基于密度波理论的非线性方程，用定性分析理论可导出旋涡星系的演化方向和由观测可得到的演化条件。
Based on the nonlinear equations of the theory of density wave, the evolutionary direction and the observable conditions on spiral galaxies may be derived by the qualitative analysis theory.
求解了经典电磁场中二能级原子系统的密度矩阵演化方程，得到了系统状态的相干特性。
We have found out the equation of density matrix evolution of the two-level atomic system in the classic electromagnetism field. The Law of coherence of the state is obtained.
研究了正在进行化学平衡的具有有限重子密度的夸克 -胶子等离子体系统的演化和双轻子产生。
The evolution and dilepton production of a chemically equilibrating quark-gluon plasma system at finite baryon density have been studied.
研究了磁阱中自旋相关的原子波包的密度分布及其动力学演化。
We have investigated theoretically the density distributions and evolution of the spin-dependent atomic wave packets in a harmonic potential.
研究了依赖强度耦合多光子J—C模型的演化算符，约化密度算符及其场熵特性。
The evolution opera tor, the reduce density operator and the dynamical properties of the field entropy evolution in the intensity - dependent coupling multiphoton J - C model are studied.
本文采用相对论流体力学模型和有限密度下的状态方程，考察在另一种情形，即在零温有限密度下q GP相变的演化图像，并对结果进行了分析和讨论。
We will use the relevant hydrodynamics model and the state equations at finite densities to investigate the QGP phase transition in the zero temperature and finite density.
本文采用相对论流体力学模型和有限密度下的状态方程，考察在另一种情形，即在零温有限密度下q GP相变的演化图像，并对结果进行了分析和讨论。
We will use the relevant hydrodynamics model and the state equations at finite densities to investigate the QGP phase transition in the zero temperature and finite density.
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