Abstract:A theoretical study of post-buckling strength of the plate with initial imperfections based on large deflection theory is ptesented. In this paper, a B-cubic spline function semianalysis method applicable for various kinds of loading and boundary conditio

Abstract:Based on a large number of data analysis of laboratory consolidation tests, a relation expression between pressure and void ratio is set up. A formula determining the preconsolidation pressure values is derived from this expression. The formula made up th

Abstract:In this paper, the calculation formulae of high-speed gas flow in a pipe with friction has been set up in the light of varied thermal process. The calculating method and related problems are made out.

Abstract:In light of analysing the characteristics of seismic geology and seismicity for Yueyang city and its surrounding areas, the author delineated the potential sources and estimated their seismiclty parameters. Using 11 historical isoseismals data of the stud

Abstract:This paper discusses the characteristics of the process of catalytically chlorinating paraffin and effects of the catalytic process on the quality of the products. As a catalyst has been applied, so the reaction rate is raised, operation cycle shortened,

Abstract:In this paper the comprehensive assessment based on structure parameters has been proposed. It has been applied to assess the azo compounds derivate from hydroxynaphthalene. The molecular diasrams and the strueture parameters of aforementioned azocompound

Abstract:The principles for determining the system of the reliability indexs of the High Voltage Electromagnetic Instrument Transformrs (HVEIT) are discussed. According to the condition and reality at home and abroad the name and quota of the indexes of HVEIT refl

Abstract:In this paper, synthesis process of RC ladder-networks are discussed. It is proved that zero shifting is completely effective in the developing of RC ladder-network. The realizability conditions for RC ladder-net-work are proposed.

Abstract:In order to improving toughness of Med-Mn white cast iron and widen its application,the effects of the chemical composition(C,Si,Mn), compound inoculation and heat treatment on its microstrueture and properties have been investigated in this paper.

Abstract:In this paper, the so-called mixed quadratic spline elements for revolution shells are introduced. They can be applied to solve linear and geometrically nonlinear problems of revolution shells and to calculate combination shells. This kind of elements pos

Abstract:In this paper the Hu Haichang's equations which are convenient for applying are generalized to various kinds of usual refined plate theories. It is found that the structure of the solutions of the generalized Hu Haichang's equations is coincident with the

Abstract:This paper deals with the physics nature of undetermined relation. First, it is pointed out that dual property of particle and wave is the general characteristic of matter. Second,the exact physics implication of the undetermined relation is discusscd

Abstract:本文研究了NESLAB循环水箱控制电路失效的原因及对环境温度的要求;并提供了维修和保护的方案.控制电路的易损件是感温探头,水箱的环境温度不能高于27℃.

Abstract:Inhibiting pitting of passive films on 10~# steel are studied by electrochemical methods and AES techniques in 3% NaCl cabonate-bicarbonate buffer solution containinng bicarboxylate. The results show that the inhibition efficency of bicarboxylate decrease

Abstract:In this paper, we consider the least-square approximate solutions of a class of matrix problems. The expression of the solutions is provided and a numerical method is described.

Abstract:McCormick多重网格收敛理论的基本假设的关键是存在一个与h无关且大于零小于1的常数,本文在光滑算子G_h为非亏损矩阵的条件下,证明了此常数与无后光滑部分的二重网格迭代收敛率是等价的,从而揭示了此常数的本质.并进一步指出Hackbush收敛理论的两大基本假设可为此常数存在的充分条件.最后分析了j—重网格(j>2)的粗网格迭代修正功能,据此以更简练的方法对多重网格迭代收敛率进行了估计,获得了类似文献的结果.

Abstract:本文证明了:当n为奇数时,含对称非零元的n阶本原矩阵类B的指标集E_B的上确界为3n-4;并且E_B={1, 2, …, 3n-4},不存在缺数段;又设N(A)是A中含正元的个数,则A是含最少正元的n阶本原矩阵的充要条件是A同构于定理6中的A.

Abstract:本文讨论带有多余参数,协方差具有Kala形式的广义线性模型.首先把这种形式的模型等价转化为带有多余参数,协方差形如V的线性模型,从而讨论其比较问题.然后,本文讨论不带有多余参数,但协方差形式为Kala形式的模型,并把其转化为通常的线性模型.依次化繁为简讨论模型比较问题.

Abstract:In this paper we have shown that if G is a finite group, R a G-graded ring and W an R-module then W is a Noetherian R-module iff W is a Noetherian R(e)-module, aud the Noetherian R-module is equal to the Noetherian R(e)-module about W.