State reduction theories,their classical analogs and some comments

Recently several theories have been proposed to account for the state reduction due to measurement. The resulting evolution is given by a new density matrix equation which suppresses linear superpositions of states with large spatial separations. We raise some pertinent questions regarding these theories. We also show that the evolution for the density matrix obtained in these theories has a classical analog.     

单成份等离子体状态方程

一、引言 在热核聚变研究中,等离子体状态方程对实验和理论计算都是很重要的基础参数,尤其是在惯性聚变研究中,等离子体的温度和密度的变化范围都很大,因此给出等离子体在全区域内的状态方程是有重要意义的。     

铁矿石在回转窑和固定床中还原速度式的推导与分析

导出并分析了铁矿石在回转窑和固定床中的还原速度式,确定了加快还原速度的条件,并提出提高煤气利用率的措施。     

关于（MgFe）2SiO4物性参数计算公式的讨论

(MgFe)_2SiO_4是上地幔介质的主要成分,计算其物性参数有助于了解地球内部的物理状态和物理过程,是地学的基础性研究工作。Goto等曾给出(MgFe)_2SiO_4的物性参数,但其所用公式尚需作适当修正。本文在对Birch状态方程作进一步讨论的基础上,修正了Goto等的公式,并重新计算了(MgFe)_2SiO_4的密度、热膨胀系数和定压比热,在综述目前工作的基础上给出了热传导系数的计算结果。     

模型参考辨识器的简化设计方法

本文将串并联模型参考辨识器用作一级辨识,并联模型参考辨识器用作二级辨识,构成了适用于任何状态、可测系统在线辨识的模型参考辨识器。高阶系统设计模型参考辨识器时,需要人为选择的参数很多。本文提出将高阶系统化分为一组一阶系统,分别设计模型参考辨识器,构成组合辨识器,这样可大大减少人为选择的参数个数,简化设计过程。     

机敏结构状态监测的光纤传感阵列及信号处理方法

本文在分析一般光纤微弯力传感原理与结构基础之上,提出了一种适用于机敏结构准分布力监测的光纤传感阵列的原理与构成以及其信号的神经网络处理方法。给出了传感阵列与系统的结构、神经网络模型及初步实验的结果。表明其传感与处理结构简单、灵活,在机敏结构损伤估计中有广泛的应用前景。     

Phase equilibria modeling by the quasilattice equation of state for binary and ternary systems composed of carbon dioxide, water and some organic components

The hole lattice quasichemical group-contribution model (HM) has been applied to described liquid-liquid, liquid-liquid-vapour and vapour-liquid equilibria at elevated and high pressures in binary and ternary mixtures containing CO₂, water, alkanols, paraffinic and aromatic hydrocarbons. An estimation of the concentration of alkanol monomers in the binaries with CO₂ has been performed. The results of modeling by the HM EOS and the Associated Perturbed Anisotropic Chain Theory (APACT) are compared. In most cases both EOS give satisfactory agreement with experimental data.     

Construction of highly enantiopure β,β-diaryl substituted glycine containing two contiguous stereocenters via asymmetric 1,6-conjugate addition

Asymmetric construction of β,β-diaryl substituted glycine bearing two contiguous chiral centers remains a significant challenge. Herein, the application of the para-quinone methides (p-QMs) and Ni(II)- complex of glycine via 1,6-conjugate addition to achieve asymmetric synthesis of β,β-diaryl substituted glycine has been explored successfully. This protocol features operational simplicity, high diastereoselectivity, and recyclable chiral ligand, which provides a versatile approach to the synthesis of highly enantiopure β,β-diaryl substituted glycine.     

正规文法、NFA、DFA、状态转换图、正规式之间的等价变换关系及变换方法

正规文法、ＮＦＡ、ＤＦＡ、状态转换图、正规式是形式语言理论的基础概念，也是编译原理词法分析理论中的重要概念和工具．本文讨论了它们之间的等价变换关系，给出了变换的具体方法并简介了它们的用途     

列写二阶电路状态方程的一种简便方法

本文通过二端口网络的伏安关系(VAR),给出了一种直接列写二阶电路状态方程的简便方法.