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On the basis of the knowledge highway's ruin of the past, in high earthquake intensity area of highway, underground structure may be fall into ruin for the seismic motion, especially, the entrance of tunnel is the weakest of the tunnel. As based on the soil-structure interaction model, adopting the soft of FLAC3D and numerical analysis method, the tunnel entrance has been computed by the elastic and plastic method, the results obtained are discussed and the measures for design and solution are presented.

根据以往的受震破坏经验，在公路隧道的高烈度地震带，地下工程可能会遭受严重震害，尤其洞口段为抗震薄弱区，本文采用FLAC3D软件，从土－结构相互作用模型出发，运用数值分析方法对隧道洞口段进行了三维弹性和弹塑性分析，得出了相应结论，并对结果进行分析，指出隧道抗减震设计中应注意的事项，并提出相应解决措施。

This is another novelty of this method. For a family of parameters, the analytical solutions of parabolic PDEs are given using the new method in this paper, the result schemes are posed.

给出了一类抛物型偏微分方程的解析解，并给出了其与差分数值解法所得到的解的比较，比较曲线表明了这种新解法的正确性。

In order to overcome the limitation of the method, an improved fault line detection method based on rough set theory is presented.

为了克服该方法的局限性，提出了一种基于粗集理论的改进故障选线方法。

This method has high fault-tolerance performance and the results of simulation show that this method is effective.

仿真结果证明了该方法的有效性。

The method has high fault-tolerance performance and the result of simulation show that this method is effective.

仿真结果证明了该方法的有效性。

Improvement of depreciation method of highway construction equipment;2. Point out depreciation expenses is an important part of equipment price by analyzing equipment price structure in the thesis? Anatomy favorableness and disbennifit infections of equipment price and enterprise benefit by selecting different depreciation method s.

从分析装备价格构成入手，指出了折旧费用是装备价格的重要组成部分；剖析了不同折旧方法的选用对装备价格和企业利益的影响；强调折旧方法的选用一定要考虑本行业和本企业的实际，在有利于装备生产和企业利益的前提下，可适当加大应用加速折旧法的力度。

For the purpose of making the output motion of mechanism approach the expected designed one furthest, optimized design method has been used broadly recently, which is an engineering method aimed to search for the optimized scheme in a sense within the constraint feasible region, and the optimization process always pushes the optimal point to the constraint borderline.

为了使机构输出运动尽可能逼近设计所期望的运动，近年来优化设计方法得到了广泛的应用。

MATLAB simulation results indicate that the control method is feasible, which lays the foundation for the application and dissemination of this method.

MATLAB仿真结果表明，这种控制方案是可行的，为在其实际生产中的应用奠定了基础。

This paper describes chiefly the basic principle and method of the optimum design of the crane girder by using the feasible direction method.

本文主要阐述用FDM方法对起重机主梁进行优化设计的基本原理和方法，并对儿种主梁进行了初步计算。

Simulation results show that the proposed method has minimal time deviation and can realize synchronization rapidly. The method can feasibly be applied to Ad Hoc network based on TDMA.

仿真结果表明，该方案具有比较小的时间同步偏差，能够快速的实现整个网络的时隙同步，可应用于基于TDMA的Ad Hoc网络。

Finally it offers the analysis of the fault-tolerance system as well as its test verification.

这样，运行于空间环境中的系统的设计目标就是在保证系统实时性

However, it is still difficult to find out the real reason of the increase of the keratinized gingiva during the orthodontic extrusion whether it is due to the proliferation of the gingival tissue or to its elastic nature, that is because the proliferation of the fibroblasts as well as the connective tissue changes in volume and the intra-fibers spaces were all immeasurable in most of the studies.

然而，仍然难以找到真正的原因增加的角化牙龈在正畸挤压它是否是由于扩散的牙龈组织或其弹性性质，这是因为增殖的成纤维细胞以及作为结缔组织的变化量和内部纤维空格都是不可估量的，大多数的研究。