多波长数据线性回归光度法同时测定钙和镁

本文研究了酸性铬蓝K体系用于同时测定钙和慎的显色条件，借助多波长线性回归法处理数据，提出光度测定钙和镁的简便方法，免去了分离手续。应用于三个水样中钙、镁含量的测定，结果满意。     

A MODIFIED HOMOGENEOUS AND SELF-DUAL LINEAR PROGRAMMING ALGORITHM

ＡＭＯＤＩＦＩＥＤＨＯＭＯＧＥＮＥＯＵＳＡＮＤＳＥＬＦ－ＤＵＡＬＬＩＮＥＡＲＰＲＯＧＲＡＭＭＩＮＧＡＬＧＯＲＩＴＨＭ￥ＧＵＯＴｉａｎｄｅ（ＭａｔｈｅｍａｔｉｃｓＤｅｐａｒｔｍｅｎｔ，ＱｕｆｕＮｏｒｍａｌＵｎｉｖｅｒｓｉｔｙ，Ｑｕｆｕ２７３１６５，Ｃｈ...     

中立型多滞量微分系统Runge-Kutta方法的A(a)稳定性分析

在中立型多滞量线性微分方程系统的理论解的基础上,讨论Runge-Kutta 方法的稳定性,得到一个)(aA稳定的充分条件。     

线性谐振子的计算机代数计算

采用计算机代数方法，通过Mathematica软件计算线性谐振子的波函数，几率密度和几率最大值的位置。计算方法简单、通用，易于推广。     

用PC改造出全能全自动轴承车床

本文介绍了一种用F—40PC将双刀架液压半自动轴承车床改造成的全能全自动轴承车床,包括车床基本功能的改进,上下料和走刀机构,在全自动、半自动和调整三类工作状态下工艺流程及程序特点。     

Estimation and testing of time-varying coefficient regression models in the presence of linear restrictions

A linear regression model with random walk coefficients is extended to allow for linear restrictions between the coefficients to be satisfied at each point in time. Estimation in this model is shown to be no more involved than estimation in the standard model. It is also demonstrated how, after a slight modification to the testing problem, classical test procedures may be applied to the problem of testing for such restrictions. The performance of the Lagrange Multiplier test for a variety of different restrictions is then investigated via simulation. An empirical application involving testing for homogeneity in a random walk coefficient version of the AIDS model is given.     

A ROBUST DECOMPOSITION OF LINEAR PROGRAMMING USING A GOAL-PARTITIONING METHOD

The Dantzig/Wolfe linear programming decomposition algorithm has had important economicinterpretations as well as a widespread impact on solving large scale linear programming problem.Inthis paper we consider a similar underlying structure,where however there is only one couplinginequality or equation.With this simplification,we demonstrate how to achieve an equitable partitionof the overall coupling resource to individual subproblem constraints through a simple iterationprocedure which appears to be very efficient.     

T＝∞跟踪问题的一种解法

跟踪问题是线性系统二次型性能指标最优控制讨论的一个重要应用问题。当终端时间T为有限时 ,很多文献都给出了适当的解法 ,但T =∞时的求解还有很多问题值得探讨。本文给出了终端T =∞时预期输出满足一定条件的跟踪问题的一种解法。此种情况可转化为输出调节器问题 ,并给出了具体的求解方法和例子。     

Routh—Hurwitz条件的若干应用方法

本文介绍Routh—Hurwitz条件的若干应用方法,特别是给出了判别矩阵谱半径小于1的方法,这些方法有实用价值。     

用于分布式识别的语音参数的提取和性能分析

主要研究用于分布式语音识别(DSR)的语音参数的提取方法以及参数性能分析。以前所用到的语音参数大部分是LPC倒谱参数,但其抗噪声性能较差。文中主要讨论了MEL倒谱参数,并在移动通信环境下,比较了两者的性能。