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At firstly assuming shear modulus is linear along depth, introducing differentiating operator of structure and using the stochastic vibration theory of continuative linear system, this paper studies the dynamic response problem of non-homogenize site soil.

首先假定土层的剪切模量随深度线性变化,引入结构微分算子,利用连续线性系统的随机振动理论,研究了非均匀场地土层地震的动力反应问题。

By using the method of an abstract continuous theorem of k-set contractive operator and some analysis technique. Sufficient conditions are derived for the existence of at least one strictly positive periodic solution of periodic two-species Lotka-Volterra competition dynamics systems with neutral delay and several deviating arguments.

利用k-集压缩算子抽象连续理论和某些分析技术,导出了此具有中立时滞和变差元的周期两种群Lotka-Volterra竞争动力系统至少存在一个严格正的周期解的充分条件。

This embodiment shows how the method of the invention can be used for encryption using dynamical systems with continuous variables.

这体现的说明方法的发明可以用来加密用动力系统与连续变量。

Jiu Ding,Aihui Zhou,Statistical Properties of Deterministic Systems Statistical Properties of Deterministic Systems discusses the fundamental theory and computational methods of the statistical properties of deterministic discrete dynamical systems. After introducing some basic results from ergodic theory, two probIems related to the dynamical system are studied: first the existence of absolute continuous invariant measures, and then their computation.

摘要本书介绍的是确定性离散动力系统统计性质的基本理论与计算方法,首先介绍了遍历理论的一些经典结果;然后着重研究了对应于混沌映射的绝对连续不变测度的存在性与计算问题,这归结于相应的Frobenius—Perron算子的泛函分析与数值分析;最后本书介绍了Shannon熵、Kolmogorov熵、拓扑熵以及Boltzmann熵,并给出了不变测度的一些最新应用。

If T is not continuous, even if T is a upper semicontinuous triangular norm, it is showed by examples that there exist fuzzy dynamic systems formed by eq(1), which have unstable equilibriums.

以实例说明了即使三角模T是上半连续的,也存在形如(1)的模糊离散动力系统,使其某个平衡态在Lyapunov意义下不稳定。

The finite difference method is applied to reduce the system of partial differential equations to ordinary differential equations.

采用有限差分方法,将由偏微分方程组描述的空间连续系统约化为由常微分方程组描述的空间离散高维动力系统。

By using the transfer matrix method of multibody system, the hard problem of computation of the vibration characteristics of LRMLRS coupled with rigid bodies and elastic bodies is solved which is very difficult to the ordinary dynamic methods, and the vibration characteristics of LRMLRS which is varied when the number of rockets in the launch device is varied, is obtained conveniently. By developing augmented eigenvectors of the LRMLRS and its orthogonality conditions, the nonorthogonality problem of the multibody system including rigid bodies and elastic bodies is solved and the exact analysis of the dynamics response of the LRMLRS including rigid bodies and elastic bodies is realized. By using the random integer programming method, the hard optimization problem which contains continuous variables, discrete variables and random variables at the same time is solved. This method provides a technology for optimum design with random variables and discrete variables. The dynamic optimum design is realized to decrease the number of rockets consumption in the LRMLRS test. The simulation system of dispersion of fire is established by using the maximum entropy method to estimate dispersion of fire.

通过应用多体系统传递矩阵法,解决了刚弹耦合远程多管火箭多体系统振动特性这一通常力学方法不便于解决的计算难题,方便地获得了远程多管火箭振动特性及其随发射架上火箭弹个数变化而变化的情况;通过构造增广特征矢量及其正交性条件,解决了刚弹耦合多体系统特征矢量不具有通常意义下的正交性的难题,实现了对刚弹耦合远程多管火箭动力响应的精确分析;应用随机整数规划法,解决了同时考虑连续、离散和随机变量等多种设计变量的优化设计难题,为含随机和离散变量的优化设计提供了手段,实现了减少远程多管火箭试验用弹量的动态优化设计;建立了应用最大熵法估计的密集度仿真系统,优化射序和射击间隔,实现了提高远程多管火箭射击密集度的动态优化。

In view of fluid accommodation system's fault diagnosis of steam-power plant,take the water height accommodation of main condenser for example,measure the pressure and flow of working water in it by the virtual instruments measurement system which is composed by LabVIEW and DAQ.

蒸汽动力液压调节系统(蒸汽管道压力调节系统、主锅炉自动燃烧调节系统、水位调节系统)的功能:1提高船舶操纵的机动性;2准确地控制和保持各种热工参数为要求值;3自动连续监视各设备的运行状态;4改善船员工作条件和减轻劳动强度。

In the present paper, grazing bifurcations of a cantilever system with one-sided impact is investigated.

局部不连续映射是研究非光滑动力系统擦边分岔的一种有力工具。

To generate planar tiling images with different visual effect by the same iterating mapping, we present a method that allows the P1 planar tessellations to be constructed by a planar dynamic systems with non-equidistant cyclic windows.

为了用同一个迭代映射构造出多个不同视觉效果的平面连续排列图案,提出一种用变周期窗口的动力系统生成具有P1对称特性的平面排列图案的有效算法。

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Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严,以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆,把帆卷起,系住。

Therefore, positively advances the interest rate marketability reform is one of current our country finance reform important tasks.

因此,积极推进利率市场化改革是当前我国金融改革的重要任务之一。