The density evolution method is used to handle the self-similar queueing models.
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。
Density evolution is a new method for analyzing the asymptotic performance of near capacity limit error-correcting codes.
密度进化方法是分析现代高效纠错编译码渐近性能的新方法。
Density evolution (DE) is one of the most powerful tools for analyzing the performance of low-density parity - check (LDPC) codes.
密度进化理论是分析低密度校验码的迭代译码性能的有效工具。
The probability density function of the stochastic structural response can be obtained by the probability density evolution method.
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。
Probability density evolution method for the analysis of linear stochastic structural static response under random loading is proposed.
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。
A mapping-based dimension-reduction algorithm for probability density evolution analysis of stochastic structural responses is proposed.
提出了随机结构响应密度演化分析的映射降维算法。
The probability density evolution equation (PDEE) of the stochastic structural response is then established by introducing augmented state vector.
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 new system reliability indices and the optimal inspection policy are obtained by using probability analysis and the density evolution method in stochastic.
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。
Through the probability density evolution method, the instantaneous probability density function of response of double random vibration systems is numerically obtained.
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。
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.
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。
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.
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。
This paper discusses four aspects of the iterative detection of the MC-CDMA system, including equalization, feedback, channel estimation and the density evolution analysis of the MC-CDMA system.
本文从迭代检测的均衡、反馈、信道估计和密度演进分析四个方面展开讨论。
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.
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。
The crack distribution and evolution of the surrounding rocks of roadway can be quantitatively depicted by the fractal dimension of crack density.
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。
Hence, the rest-mass of the neutrino being non-vanishing would influence greatly the mass density and further the evolution of the universe.
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。
The effect of the microcracks size on damage evolution was investigated to overcome the limitations of damage models based only on defect density.
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。
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.
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。
A method for discreted description of damage mechanism is given, and the evolution equation of discreted orientation density of cracks is obtained.
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。
Effect of foaming time on the density and porosity of foam aluminum was discussed in detail. Evolution of pores in the foaming process was described, and the foaming mechanism was analysed.
详细讨论了发泡时间对泡沫铝密度、孔隙率的影响，描述了发泡过程孔结构的演变过程，并对发泡机理进行分析。
We have investigated theoretically the density distributions and evolution of the spin-dependent atomic wave packets in a harmonic potential.
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。
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.
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。
Ravine density, which is an important factor indicating the extent of the fragmentation of the Earth surface, plays a significant role in the research of soil erosion and landform evolution, etc.
沟壑密度是反映地表破碎程度的重要因子，在土壤侵蚀、地貌演变等研究中有重要作用。
According to the system density matrix, discussed the evolution of the system entropy with time and photon statistical properties of the system.
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。
The results showed that the density variation induced by double-diffusive convection is significant to the formation and evolution of A-segregates.
结果表明，糊状区中由于热溶质双扩散对流造成的密度变化是形成A偏析的根本原因。
Furthermore, the energy density spectrum for electromagnetic wave, Langmuir wave and ion acoustic wave are obtained and used to interpret spectra evolution with time.
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；
Density Matrices I. Initial Non-Eigenstate Preparation, Evolution, Detection.
密度矩阵i。初始非本征态的准备、演化、探试。
Results showed that the root dry weight, root weight density, root length, root length density and root diameter were increased with the evolution of the cultivars at main growth stages.
结果表明，在各主要生育期，根干重、根重密度、根长、根长密度和根直径随品种演进增加或显著增加。
By detecting the evolution of the cavitations of density, we can trace out the stealth vehicle.
通过对密度空洞变化的探测，可对隐身飞行体进行跟踪。
The nonlinear energy integral equation describing the evolution of ion density has been derived.
导出了描述离子密度变化的非线性的能量积分方程。
The nonlinear energy integral equation describing the evolution of ion density has been derived.
导出了描述离子密度变化的非线性的能量积分方程。
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