模型

Fundamental concepts in power system differential-algebraic equations model, like singular point and multiple energy function sheets defined on constraint manifolds, are studied.

所得研究成果揭示了微分代数模型与奇异扰动模型的本质区别、奇异性与系统模型和系统负载的联系、结构保持能量函数法可能具有的内在保守性等，这对深入理解电力系统微分代数方程模型的拓扑结构、结构保持能量函数法和暂态电压稳定及其与功角稳定的关系具有一定的价值。

The model generalizes the input-output function in transiently chaotic neural network to a class of continuous, differentiable and monotone increasing functions. Secondly we study the uniformly asymptotical stability of equilibrium in the non-autonomous model. Finally, several examples and numerical simulations are given to illustrate and reinforce our theories. In chapter 3, we firstly introduce a specific class of discrete-time neural network models with sinusoidal activation function.

在本文的第二章中，首先介绍了一类具有广义输入输出函数的非自治离散神经网络模型，该模型把瞬时混沌神经网络模型中的输入输出函数推广到了一般的单调递增且连续可微的函数；其次，利用Schauder不动点原理和利用Lyapunov函数逆定理依次证明了模型平衡点的存在性和在时变权值下的一致渐近稳定性；最后，对几个具体的例子进行数值模拟，数值模拟的结果更好地说明了我们的结论。

The nonlinear regression function of mathematic tool software SPSS was used to build models about DBH, high of tree, volume of single timber and stand volume slash pine plantation, and these models are have a certain extant applicability.

利用SPSS的曲线估计和非线性回归功能，获得了具有一定适应性的湿地松人工林胸径生长模型、树高生长模型、单株材积模型、林分蓄积量模型。

Graphics component model and the establishment of joint model of the slip road map, but also explains how to operate in graphics, graphic model of how the components of the association nodes to switch to the slip road model, and its association recorded in the matrix In.

建立图形元件模型与节点支路模型的映射关系，同时也说明了，如何在进行图形操作时，如何将图形模型中元件的关联关系转换到节点支路模型中，并且将其关联关系记录于矩阵中。

Chapter 3 introduces the research contents and the results of the model test about the Xiangjiaba tailrace tunnel with sloping ceiling.

本章根据物理模型的试验条件和试验工况进行相应的数值计算，即在数值计算中，输入的管道、机组特性等参数均为模型试验实测数据，程序根据模型比尺输出原型的计算结果信息，并与原型化后的模型试验数据分析比较。

By getting over the state of the art about the technique of the tailrace tunnel with sloping ceiling, the research contents and study ways and means are put forward, and the importance to research is explained.

第二章：主要论述了变顶高尾水洞的工作原理、体型设计和适用条件以及过渡过程计算的数值计算模型，重点在于数学模型的建立与分析，明满流交替现象中选择了合理的计算模型和计算方法；第三章：着重介绍了向家坝变顶高尾水洞方案模型试验的研究内容和主要结果。

By getting over the state of the art about the technique of the tailrace tunnel with sloping ceiling, the research contents and study ways and means are put forward, and the importance to research is explained.Chapter 2 introduces the working principle of the tailrace tunnel with sloping ceiling. And the design of body type, appliance condition and the numerical model for transient process are illuminated.

第二章：主要论述了变顶高尾水洞的工作原理、体型设计和适用条件以及过渡过程计算的数值计算模型，重点在于数学模型的建立与分析，明满流交替现象中选择了合理的计算模型和计算方法；第三章：着重介绍了向家坝变顶高尾水洞方案模型试验的研究内容和主要结果。

Based on velocity and direction distribution of mobility model, this text put forward the scheme of simulating the movement of mobile station and the methods of computing the sojourn time, then make statistical analysis on the sample to obtain the probability density function of the sojourn time and the probability of handover.

在移动模型运动速度和方向分布的基础上，利用Matlab模拟移动模型在小区内运动轨迹，并随时判断移动模型是否离开小区，以此计算移动模型在小区内的停留时间，并对多次计算所得到的大量数据进行统计，得出停留时间的概率分布，并推倒切换发生率。

It analyzed impact principle, and researched viscidity and springiness model of soil. So the relation of impact and soil was found, and the dynamic model of impact bar-soil system was established. After analyzing and researching the model, a better dynamic model with soil impact character was gained.

针对土壤的物理特性，对冲击原理进行分析，并对土壤的粘弹性模型进行研究，建立冲击与土壤之间的联系，为土壤压实冲击测量装置建立了冲击杆—土壤系统的动力学模型，并对模型进行分析研究，简化出更适合土壤冲击特性的动力学模型。

Results and Conclusions:(1) An evaluation model is constructed which consists of static structure and dynamic process model.

本文的主要研究工作包括：①运用系统方法构建了公共部门网站服务质量的评价模型，该模型包括静态的结构模型和动态的过程模型。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。