系数问题

An analytical model describing the dispersion with an exponential dispersion function is built, which be transformed into CDE problem with variable coefficient, using hypergeometric function and inversion technique, an analytical solution for two type boundary conditions is obtained.

文章对于具有指数弥散函数的弥散过程建立了对流-弥散微分方程模型，应用积分变换将问题转化为具有变系数的常微分方程问题；对于两种类型的边界条件，应用超几何函数和反演技术得到了问题的解析解，并分析了指数弥散过程和常数弥散过程的不同性质。

In the last chap-ter,the natural integral equation and natural boundary element method forharmonic problem on exterior elliptic domain are introduced.Then,based onthis,the natural boundary reduction method for a kind of exterior problem ofanisotropic constant coefficients elliptic equation is discussed, the natural inte-gral equation and its solving method on circular boundary and elliptic bound-ary are obtained.These results can be directly applied in coupled methodand DDM for exterior boundary value problem.

最后，讨论了椭圆外区域调和问题的自然积分算子即D-N算子及自然边界元方法，并基于此研究了一类各向异性常系数椭圆型方程外问题的自然边界归化方法，首次得到其在圆周边界及椭圆边界上的自然积分方程及其求解方法，并将这些结果直接应用于外边值问题的耦合算法。

In this paper, the property for the irreducible polynomial and questions of irreducibility for some special multinomial are studied, like the irreducibility question of , and the question for rational root on special integer polynomial of three, four times are studied.

本文研究了不可约多项式的性质和一些特殊多项式的不可约性问题，如的不可约性问题，同时研究了特殊的三次、四次整系数多项式的有理根问题。

Chapter 7: The COD〓 distribution in Yangtze River is researched, especially the diffusive coefficient and decay coefficient.

第七章，在流场计算的基础上，以某一流线作边界，重新划分网格，结合环境流体力学的特点对COD浓度的对流、扩散问题进行了专门研究，结合长江及其支流的大量实地资料对扩散系数、衰减系数进行了统计研究及模型率定，得出了一些合理的参数为以后进一步的研究打下了良好的基础。

Aim at the false-solutions(the meaning is the solutions do not satisfy the divergence theorem) of FEM, impose the magnetic divergence conditions

针对有限元数值解中存在的伪解问题(即求出的解不满足相应的散度条件)，推导出了强加散度条件的磁场有限元系数矩阵的表达式，本文混合法中的有限元系数矩阵即是在此基础上形成的。

The main contents are as follows: In chapter 1, systematic conclusions of intension and characteristic of sustainabledevelopment of real estate industry are made after the review of home and foreign research achievements; Chapter 2 analyzes status quo and trait of Chinese real estate industry in 2005, from views of investment, exploitation and sale, three parts of real estate industry, with the help of massive graphs, as well as elaborates main problems existing in real estate market; In chapter 3, the gambling thought is used to divide the developing process of Chinese real estate market into three phases, according to the change of main market participators and their behaviors; Finally, in chapter 4 and 5, a system with 72 indices in research on sustainable development of real estate industry in china is established, and theories of Catastrophe, Cosines Vector Included Angle, Entropy and CRITIC are applied to appraise the current situation of sustainable development of real estate industry in 31 provinces and cities in 2004, then the consistency test of appraisal results is carried out by Kendalls Coefficient of Concordance and Spearman Correlation Coefficient.

本文的主要内容如下：第一章在查阅大量国内外有关可持续发展理论、房地产业有关研究文献的基础上，评介了有关理论概念，并对房地产业可持续发展的内涵进行归纳、总结；第二章从房地产投资、开发和销售三个环节入手，结合大量图表，分析2005年中国房地产业的发展状况和特点，揭示我国房地产市场存在的主要问题；第三章利用博弈思想，根据市场参与主体及其行为的变化，将中国房地产市场的发展过程分为三个阶段；第四、五章构建了一个由72个指标构成的房地业可持续发展指标体系，利用突变评判法、向量夹角余弦法、熵值法和CRITIC法对2004年全国31个省市的房地产业可持续发展状况进行评价，并运用肯德尔和谐系数和斯皮尔曼等级相关系数对评价结果进行一致性检验。

The effects of the noisy signal and speech formants for pitch detection are decreased by the 3-order lowpass elliptic filter.

针对直接从带噪语音中难以准确提取线性预测系数的问题，给出了一种基于谱减的带噪语音的线性预测系数提取方法。

So recommend the measuring methods of roller friction coefficient.

在制动实验台滚筒的附着系数测量存在的问题上，只是对解决方案进行文字上的描述，论述了如何使用制动实验台滚筒的附着系数测试仪，不支持论文最后一段结论。

Problems ,such as selection of the corresponding stuff, selection of the surge ponderance in the cavity and the influence of the minishing prism couplers on the mode of the ring laser cavity are discussed.

对采用棱镜耦合器的全反射棱镜式环形激光器的耦合输出特性进行了理论研究，导出了有&楔形&间隙的棱镜耦合器的反射系数和透射系数表达式，给出了反射率和透过率随&楔形&间隙高度变化的理论计算曲线，进而研究了有关材料选取、腔内振荡分量的选取及减小棱镜耦合器对环形激光腔内模式的影响等问题。

In this paper, we discuss some recurrence relations and congruence properties of Bell polynomial, and give a class of recurrence relations satisfied by GSN pairs. Furthermore, we givethe definition of extended GSN pairs Gand G, so we unify the binomial coefficients, Gaussian coefficients, and Stirling numbers. We provide urn ,models for G(n,k|w,0) andG(n,k|0,w).

在这篇论文中，我们讨论了Bell多项式中的递归关系和同余问题，给出了广义Stirling数对的一类递归关系式，提出了扩展的GSN对G和G的概念，统一了二项式系数、高斯系数和Stirling数，并利用模型对G和G进行了组合解释。

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。