数值算法

The method using the hierarchy characteristics of website and user interest,based on ant colony algorithm,considering a user's website browsing process as an ant foraging behavior,counts degrees of pheromones and supports on corresponding path in every level,and gets node's preference function values,then finds user interest model by this value.

该方法根据网站和用户兴趣所具有的层次性特征，利用蚁群算法，将用户对网站结点的一次浏览过程，对应于蚂蚁的一次觅食活动周期，从各个层次求出相应路径的信息素浓度和支持度，从而得到用户对该结点的偏好函数值，再依据此值求得用户兴趣模式。

Combining aesthetics and aerodynamics, three sorts of design parameters of headlamp modeling are summarized, based on analysis of the automotive forebody and headlamp modeling. A parametric design platform for headlamp is established, It is composed of the simplified model of flow field around automobile and the orthogonal experimental optimal algorithm.

结合美学、考虑汽车空气动力学，在分析汽车前部和车灯造型的基础上，总结出车灯造型的3类设计参数；建立了由"考虑美学与气动阻力的车灯造型汽车外流场数值分析简化模型"和正交实验优化算法组成的车灯造型参数设计平台。

In chapter 5, we implement the right algorithm in Fortran language, and give some numerical results.

第五章：通过对算法的剖析用程序语言来实现其中的重要部分以及一些数值计算结果。

Satisfactory numerical validation is presented including a preliminary investigation of time step effect and the value of fractional derivative order for different types of fractional differential equations.

数值算例对不同的分数阶微分方程进行了讨论，探讨了不同的分数阶和时间步长对计算结果的影响，并将计算结果与文献中相关算法的计算结果进行了比较。

In Chapter 4, we consider more complex fractional nonlinear differential equation,also using the high order approximation presented by Lubich to construct correspond-ing numerical scheme and giving the error analysis of the algorithms.

在第四章中，进一步的考虑更复杂的非线性分数阶常微分方程，同样利用的是Lubich提出分数阶导数的高阶近似，构造相应的数值格式，并给出这一算法的误差分析，即相容性，收敛性和稳定性的证明。

Through establishing the functional of the source pulse which is based on the concept of "usable energy" in the received pulse and then extremizing the functional by means of the calculus of variations, the mathematical models of the optimized source pulse waveforms are shown to be associated with the eigenfunctions of a homogeneous Fredholm linear integral equation of the second kind. An efficient algorithm is developed for numerically solving the integral equation models.

论文研究了基于延迟反射脉冲序列无源标签的UWB RFID系统的基本工作原理并进行了详细的信号描述和分析，通过建立基于接收脉冲"有效能量"概念的源脉冲波形函数的泛函和使用变分计算泛函极值，得到了相关于第二类齐次Fredholm线性积分方程特征函数的源脉冲波形最优解数学公式模型，并开发了一套有效的数值求解算法。

On the basis of theoretical analysis of digital holography, the preliminary study carries out through computer simulation and experiments. The main work is as follows:Firstly, on the basis of off-axis Fresnel diffraction, the principles of optical holography and digital holography are introduced. Besides, the theories such as recording digital hologram, numerical reconstruction and the related digital image processing methods are analyzed.

本论文从理论分析、计算机仿真和实验三个方面对数字全息技术进行了初步的研究，主要完成了以下工作：首先，介绍了传统的光学全息术和数字全息技术的基本原理，以离轴菲涅耳全息为例对数字全息的记录条件、数值重现算法、以及相关的数字图像处理方法进行了详尽的理论分析。

Firstly, the gaseous turbulence statistics of single phase flow, derived from PIV data, were compared with documented DNS results, and it demonstrated the feasibility of turbulence measurement using PIV technology.

本文首先比较了采用传统PIV算法测量的单相湍流统计量与文献中直接数值模拟的结果，证明了PIV测量流场湍流量的可行性。

This is a Gaussian algorithm source code, the University of infusion of the experimental course content to all of us to learn and master the numerical analysis of the Gaussian operator helpful!

详细说明：这是一个高斯算法的源代码，大学输注分析课的实验内容，对大家学习和掌握数值分析中的高斯运算很有帮助！

We will systematically study some generalized inverse characterize value problems of matrices in this M.S.

本文在研究这些矩阵的基本性质的基础上，给出了解的表达式以及相应的算法和数值例子。

We have no common name for a mime of Sophron or Xenarchus and a Socratic Conversation; and we should still be without one even if the imitation in the two instances were in trimeters or elegiacs or some other kind of verse--though it is the way with people to tack on 'poet' to the name of a metre, and talk of elegiac-poets and epic-poets, thinking that they call them poets not by reason of the imitative nature of their work, but indiscriminately by reason of the metre they write in.

索夫农 、森那库斯和苏格拉底式的对话采用的模仿没有一个公共的名称；三音步诗、挽歌体或其他类型的诗的模仿也没有——人们把&诗人&这一名词和格律名称结合到一起，称之为挽歌体诗人或者史诗诗人，他们被称为诗人，似乎只是因为遵守格律写作，而非他们作品的模仿本质。

The relationship between communicative competence and grammar teaching should be that of the ends and the means.

交际能力和语法的关系应该是目标与途径的关系。