THE ASYMPTOTIC SOLUTION OF THE UNSTEADY PLANAR PARALLEL GAS FLOW FOR THE CASE THAT THE ADIABATIC INDEX NUMBER γ IS BIG

In ref I, under the condition that the components of velocity are only the functions of time and polar angle θ, Drornikov solved eqss. (1.1) (1.3) of the ideal gas unsteady planar parallel potential flow. It was pointed out in ref. [1] that in general cases, the evident solutions could not he obtained. Only for two especial cases, the evident solutions were obtained.In this paper, the author studies the same prohlein as that in ref. [1]. In the first section we obtain the evident solution of equations (1.1)-(1.3) under the condition that the sonic velocity is restricted by some complemental conditions. In the second section, we obtain the first-order approximate solutions of the fundamental equation for the case that γ>>1     

The more general displacement solutions for the plane elasticity problems

In this paper,the author obtains the more general displacement solutions for theisotropic plane elasticity problems.The general solution obtained in ref.[1 ]is merelythe particular case of this paper,In comparison with ref.[1],the general solutions ofthis paper contain more arbitrary constants.Thus they may satisfy more boundaryconditions.     

非牛顿流体弹性径向渗流的自型问题的近似解

本文研究了非牛顿流体弹性径向渗流的自型解.设流体服从幂函数律.当指数n等于零时,文中得到了准确解.将此解和文献[1]的近似解作了比较.对于n>1及n<1的各种情形,文中得到了近似解.有算例.     

关于平面应变和反平面应变复合型裂纹尖端的理想塑性应力场

文献[1]在裂纹尖端的理想塑性应力分量都只是θ的函数的条件下,利用平衡方程、应力应变率关系、相容方程和屈服条件导出了平面应变和反平面应变复合型裂纹尖端的理想塑性应力场的一般解析表达式。但文献[1]对应力应变率关系式中的比例因子λ(r,θ)作了很多限制,即假定λ与θ无关,并假定λ=c或cr-1。本文取消了对λ的这些限制。而文献[1]所研究的λ=crn(n=0或-1)的情形,只是本文的一个特殊情况。     

A new approximate solution of nonlinear diffusion equation

In this paper,the same problem in ref.[1] is studied.The author’s solutionapproximately satisfies the whole fundamental equations (1.1)and(1.2)and the wholebound values conditions (1.3-1.5).But the Liu’s solution does not satisfy theequation of continuity(1.2).     

CMS 8 TeV顶夸克对实验数据对CT18NNLO胶子部分子分布函数的影响

在不进行量子色动力学(quantum chromodynamics,QCD)整体分析的情况下,估算新数据对部分子分布函数(parton distribution functions,PDF)的影响,以及用更新的部分子分布函数预测其他可观测量不确定度的贡献是一项非常有用的工作。首先,用更新和优化的部分子分布函数软件ePump (error PDF updating method package)研究由CMS 8 TeV顶夸克对产生的微分散射截面(1/σ) dσ/dy_tt、(1σ) dσ/dm_tt、(1/σ) dσ/dy_t和(1/σ) dσ/dp_T^t等实验数据对CT18NNLO胶子部分子分布函数的影响,然后,用更新后的部分子分布函数计算(1/σ) dσ/dy_tt、(1/σ) dσ/dm_tt、(1/σ) dσ/dy_t和(1/σ) dσ/dp_T^t,并将计算所得理论值与实验值进行...     

支持维、哈、柯文的Web浏览器的研究与实现

本文主要是针对网页浏览器在其界面和功能方面的不足,保留了现有Web浏览器所具备的所有功能的基础上,在Windows平台下,设计并开发出基于IE内核的具有维、哈、柯文特色的Web浏览器。主要内容包括了介绍向浏览器中嵌入维、哈、柯文字库及输入法技术,实现网页地址转换和文种转换等功能,在浏览器上实现汉、维、哈、柯四种语言来支持用户的使用需求。     

边界层型问题的插值摄动解法

本文在文[1]的基础上用插值摄动法研究了最高阶导数乘以小参数的二阶常微分方程的定解问题。算例表明,本文方法计算过程简单,其精度甚至比多重尺度法的一级近似结果的精度还稍高一些。     

The similar solutions of nonlinear heat conduction equation

ＴＨＥＳＩＭＩＬＡＲＳＯＬＵＴＩＯＮＳＯＦＮＯＮＬＩＮＥＡＲＨＥＡＴＣＯＮＤＵＣＴＩＯＮＥＱＵＡＴＩＯＮＹｕａｎＹｉｗｕ（袁镒吾）（ＣｅｎｔｒａｌＳｏｕｔｈＵｎｉｖｅｒｓｉｔｙｏｆＴｅｃｈｎｏｌｏｇｙ,Ｃｈａｎｇｓｈａ４１００１２．Ｐ．Ｒ．Ｃｈｉｎａ...