圆盘定理的改进与弱连对角占优矩阵

本文对圆盘定理进行了改进，给出了特征值分布新的估计，由此引出了弱连对角占优矩阵，讨论了其基本性质，重点分析了该类矩阵的逆与分裂特征，证明了在该类矩阵条件下Ｈ－相容分裂是收敛分裂，并给出迭代矩阵谱半径的上界及ＳＯＲ算法中参数ω的选取范围。     

Ce：KNSBN晶体中产生的双泵浦相位共轭

首次报道在Ｃｅ：ＫＮＳＢＮ晶体中产生的“双”泵浦相位共轭现象，同时还观察到由同一“双”泵浦相位共轭光路所产生的自泵浦相位共轭和四波混频现象。     

双降膜分步熔融结晶分离对、邻二氯苯的研究

本文首先简介了该课题及其实验设备，测试过程，接着，经过对部分实验结果的分析讨论，得到了一些初步结论．     

High Efficiency Bridge Double PhaseConjugation in PhotorefractiveTb: Cu: KNSBN Crystal

1.IntroductionMutuallypumPedphaseconjugatemirrorsarenonlineardevicesthatsimultaneouslyproducephaseconjugatereplicasoftwomutuallyincoherentbeams.TheyattractedgreatattentionbecauseoftheirnumerousPotentialapplicationsinadaptiveoptics,opticalinfor-mationprocessing,laserlocking,optica1communication,opticalneuralnetwork,andsoon[l~s1.Variousschemesleadingtomutualphaseconjugationhavebeendemonstrated,includingdoub1ephaseconjugatemirror(DPCM)['J,mutua1lyincoherentbeamcou-pler[:J,birdwingphaseconjugat…     

First order quantum correction to the free energy of simple liquids

Using the perturbation theory of Weekset al the first order quantum correction to the free energy of a simple fluid characterised by a double Yukawa potential function has been expressed in a simple closed analytical form which allows numerical calculation simply on a desk calculator.     

Fake double layers in double plasma devices

The double layer like potential jumps have been observed in a double plasma device. They do not correspond to a switching of plasma potential from one metastable state to another but are caused by the ionisation of a very minute amount of the gas that inevitably leaks into the system during the probe movement.     

荣辱观的当代语境意义和道德实践

荣辱观是一种基本的道德范畴,内含社会和个人对特定事件与人物的价值判断,反映人的道德价值、生存价值和社会价值,是一种特殊的道德情感.荣辱观作为一个历史性的范畴,归根到底来源于人们所处的社会生活条件和经济关系,其内涵会随历史条件的改变而改变.在市场经济条件下,荣辱观具有鲜明的语境意义和实践价值.     

Concept Approximation between Fuzzy Ontologies

0 IntroductionOnktnoolwolgeyd[g1]ei so tnh eth bea ssiec moaf nstihcari Wnge ba[n2]d. re Tuhsienregare concepts ,relations ,instances and axioms in theontologies .Classic ontologies are based on descrip-tionlogics[3],whichinterpret conceptsinthe ontol-ogy as sets of instances . However , we often needrepresent uncertainty information in practice,e.g.text and multi media information. The classic ontol-ogies are insufficient to represent such uncertaintyinformation, because it may be uncertain …     

改变语文教学低效窘境的思考

本文通过对中小学语文教学费时低效的根源进行理性剖析,探讨了在新一轮基础教育改革中应遵循的语文教学的原则及方式方法,并结合语文教育教学的特点,从改变教学理念,改变学习观念和改革评价方式等方面,提出了改进语文教学的几点建议,以期引起语文教育教学研究工作者和一线教师对此问题的关注。     

回归与超越——漫议中国文学研究中的历史感问题

近几年来中国古典文学的研究呈现出两个鲜明的变化,即我们已经不满足于对浅层次艺术感的简单追求,而更加注重厚实的历史感;同时,我们也已经不满足于对某些现成理论的盲目套用,而更加注重文献的积累。由此,中国古典文学的研究呈现出向传统文献学回归的迹象。然而,从某种意义上说,传统文献学已经远远不能适用于新时代的需要。电子文献、出土文献、国外文献为传统文献学添加了许多新的内容,同时并为中国古典文学的研究超越传统文献提供了可能。