指数方程

With the solutions of the biharmonic equation at boundary value in a semi-infinite stripe,a weighted energy function is established.

对半无限带状区域上双调和方程边值问题建立了能量衰减估计，证明了以方程的解建立的加权能量随着与区域有限端距离的增长，该能量呈指数式衰减。

Starting from two-line soliton solution of an integrable2+1-dimensional system in bilinear form,one can find a dromion solution that is localized in all directions for a suitable potential.

从2+1维双线性形式的非局域BussinesqNLBQ方程和KP方程的隐线孤子解出发，可以找到与某种势所相应的各方向都指数衰减的dromion解。

In this paper, the boundedness of the solutions to neutral functional differential equations with finite delay has been studied.

本文研究了具有有限时滞中立型泛函微分方程解的有界性问题，得到了方程解的指数渐近稳定性蕴涵有界解的存在性的新的结

In the second chapter, the KDV type equation on unbounded domain is considered. Applying with the method of decomposing operator and the theory of constructing some compact operator in weighted space, the existence of exponential attractor is obtained.

在第二章中，运用带权空间构造一类紧算子和算子分解的方法，研究了无界区域上的KDV型方程，得到了该方程指数吸引子的存在性。

Based on theory of simple harmonic oscillation in physics,this paper presents a novel model for production decline prediction given by deformation of critical damping oscillation equation which is predigest.

基于物理学中的简谐振动原理，提出了把阻尼振动方程中的临界阻尼振动方程变形得到一种新的产量递减模型，可简化为Arps指数递减形式，经实例计算，可以用来预测油田产量，以此指导油田开发和管理。

Based on theory of simple harmonic oscillation in physics, this paper presents a novel model for production decline prediction given by deformation of critical damping oscillation equation which is predigested to Arps exponential decline form.

基于物理学中的简谐振动原理，提出了把阻尼振动方程中的临界阻尼振动方程变形得到一种新的产量递减模型，可简化为Arps指数递减形式，经实例计算，可以用来预测油田产量，以此指导油田开发和管理。

In this thesis, the virtual boundary integral equation is based on double layer potential with the virtual density to be determined on virtual boundary. Since this integral equation related to double layer potential only involves the computation of the normal derivative and second normal derivative of fundamental solution, the exponential integral function is not involved in it, so numerical computation for the exponential integral function is avoid.

本文则基于双层位势，引入虚拟矩密度函数来建立虚边界积分方程，并首先对时间变量进行解析积分，在虚、实边界上采用常单元和等额配点离散，该方程只涉及含基本解的法向导数及其二阶法向导数项的计算，对时间变量进行解析积分后，不会出现对指数积分函数的空间变量的积分计算。

In the first part, it discusses the existence of global weak solutions of the initial boundary value problems to a class of multidimensional quasi linear evolution equations with strong damping, nonlinear strain, nonlinear damping and...

我们证明，上述方程中诸非线性项的增长阶（假定它们均具有不超过多项式的增长阶）指数、初始能量的状态和相应的定解问题的整体解存在与解在有限时刻发生Blowup现象之间存在着密切的联系，得到了增长指数、初始能量的状态与整体。。。

Based on the samples of over 1000 listed companies at the beginning of Reform of Non-tradable Shares in 2004 and 2006, the share proportion CR1 of the largest shareholder, Z index calculated as the ratio of share ratio of top 2 shareholders and H10 index calculated as the sum of square of share ratio of top 10 shareholders, and Tobin'Q reflecting the value of target company are sele

本文以股权分置改革开始的前后两年即2004年和2006年的一千多家中国上市公司为研究样本，选取第一大股东持股比例CR1、前两大股东持股比例的比值Z指数以及前十大股东持股比例的平方和H10指数作为衡量大股东控制程度的指标，采取托宾Q值来作为衡量公司价值的指标，把公司规模、财务杠杆和第一大股东性质虚拟变量作为控制变量，建立回归方程，实证结果发现三次？

Nonlinear regression analysis was performed to assess the allometric relation of FFM with body height.

根据FFM是身高的异速生长指数的模型关系，进行非线性回归，建立指数曲线回归方程。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。