离散

In the chapter three, by using the comparison principle and frequency domain method of the discrete systems with time-delay, combining Rouche Theorem, sufficient criterions for the stabilization of the neutral type discrete control systems with multiple time-delay and the neutral type interval coefficient discrete control systems with multiple time-delay are obtained by choosing appropriate feedback controller.

在第三章，利用时滞离散系统的比较原理与时域法，结合复变函数理论中的路歇定理，通过选取适当的反馈控制律，得到了多组时滞中立型线性定常离散控制系统和多组时滞中立型区间系数线性定常离散控制系统的无条件镇定的充分性准则。

First, the problem of choosing sample time in the discretized variable structure control of continuous-time systems is analyzed, then direct design methods of variable structure for discrete-time systems are discussed.

首先研究了将连续系统的变结构控制理论离散化后应用在离散系统时采样时间选取的问题，接下来讨论了直接针对离散系统的变结构控制的设计。

In the last part we investigate the existence of global attractors for the timediscretization model from a class of reaction-diffudion equations with delay, andthe upper semicontinuity of the global attractors is obtained under some sufficientconditions.

第三部分研究了一类时滞反应扩散方程的时间离散化模型，证明了连续模型离散后整体吸引子的存在性，并在一定条件下证明了离散整体吸引子的上半连续性。

Most composite schemes switch the compressive scheme and high resolution scheme with a switching function about the slope of the interface in order to overcome the above problem.

为了处里上述的问题，大部分混合离散法都是采用一个与介面斜率相关的转换函数，在高解析离散法和压缩式离散法之间做切换。

The author originally propsed a discrete dynamic model of pressure fluctuations for the deep slugging fluidized bed.

本文首次提出了深层节涌流化床离散化的压力波动动力学模型，由离散单元的瞬时均匀性条件，使得离散模型方程为一二阶常系数线性微分方程组

A nonlinear semi-discrete model of investment dynamic system is set,and the existence and unique of solution for semi-discrete system are discussed.

建立了投资动力系统的一个非线性半离散模型，并讨论了半离散系统解的存在唯一性，给出了线性半离散系统稳定的一些充分条件。

The enhanced emission yields of secondary ions induced by Si2 clusters at the low energies are clearly seen and attributed to the vicinage effect of the nuclear collision processes of cluster constituents and the secondary ion emissions are still dominated by electronic stopping processes at high energies.

实验结果显示，在以上的生物样品中，MeV能量离子的能量损失值和TRIM程序模拟的结果相吻合，但是透射离子的能量离散值却与TRIM程序模拟结果有很大的不同。结合生物样品的结构不均匀的特性，对Bohr能量离散理论进行了修正，并发现修正后的Bohr能量离散理论计算结果与实验值符合得很好。

On the basis of the relation, we will prove some useful properties of the discrete Zak transform which lay the foundation for the computation of discrete Gabor transform.

利用连续Zak变换和离散Zak变换的关系，证明了离散Zak变换的一些性质。为进一步研究离散Gabor变换建立了数学基础。

We will strictly derive the discrete Zak transform in more general conditions and establish the relationship between the continuous and the discrete Zak transform.

一、首次给出了一般条件下的离散Zak变换及性质。本文对一般条件下的离散Zak变换进行了严格的推导，并给出了连续Zak变换和离散Zak变换的关系。

At last, the paper introduces the basic components, layout, loading and unloading process flow of Tian Jin Container Terminals, evaluates the related performance parameters and at last introduces some related empiristic formulas based on the historical data of an actual terminal.According to the idea of the finished eM-Plant hiberarchy and dynamic model and the process characteristics and simulation aims of Container Terminals, the paper introduce the characteristics and modelling process of discrete event;At the specification of eM-Plant ,the paper show the modelling unit and programming function of eM-Plant detailedly .

根据天津港集装箱码头物流系统的层次模型和动态模型的思路，以天津港码头的数据为原型，根据天津港集装箱码头生产作业的特点与仿真目标的要求，介绍了离散事件系统的特点和对离散系统仿真的步骤，在eM-Plant的主要特点说明中，详细介绍了eM-Plant的建模单元和其编程功能，针对本模型的特点，说明了模型的结构和仿真目标，在保持模型主要特点和功能的前提下对模型进行了必要的抽象和简化，然后借助现代离散事件动态系统仿真语言eM-PIant，建立了集装箱码头物流系统的计算机仿真模型，并利用码头的实际营运数据验证了仿真模型的可靠性。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。