一种基于Cross-Product与Hass Tree的IP分类算法

在Cross-Product算法的基础上,结合哈希树(HashTree)数据结构,综合二者的优点,提出了一种新的IP分类算法CPHTIT(Cross-Product and HashTree with index table).仿真结果表明CPHTIT在时间和空间上都达到了高速IP分类的要求,与现有经典算法Grid of Tries和Modular比较,其综合性能有所改进.     

独立成分分析的研究进展

介绍了独立成分分析（ICA）的基本模型及其假设、含混性、非高斯性度量和通用求解过程。讨讨了目前ICA的几个研究方向的发展现状和面临的问题，分析了ICA基本模型和几种扩展模型的求解算法，包括盲反卷积、卷积混和的盲分离、非线性瞬时混合的盲分离，提出了ICA未来理论和应用研究中的开放课题．     

一种基于Cross-Product与HashTree的IP分类算法

在Cross-Product算法的基础上，结合哈希树（HashTree）数据结构，综合二者的优点，提出了一种新的IP分类算法CPHTIT（Cross-Product and HashTree with index table）。仿真结果表明CPHTIT在时间和空间上都达到了高速IP分类的要求，与现有经典算法Grid of Tries和Modular比较，其综合性能有所改进。     

从教师的角色转换看教学行为变化--略谈教师与研究性学习的实施

开展研究性学习着眼于学生学习方式的转变,但着手点却是改变教师教的观念和行为方式.教师在研究性学习中如何审视、定位自己的角色,如何进行教学与指导,是研究性学习能否有效实施的关键.探讨教师在研究性学习中的角色定位与教学行为策略,有利于促进教师真正走进并有效地指导研究性学习.     

IPSec协议及其安全性分析

介绍和分析了网络层安全协议 ( IPSec) ,并侧重研究了其认证和保密两种安全机制 ,对有关 IPSec协议安全性问题进行了较为详细的分析 ,指出了 IPSec协议的实际应用价值     

THE EFFECT OF ANION ON THE MORPHOLOGY OF ELECTRODE, THE ADSORPTION OF QUINOLINE AND THE SER SPECTRA

The effect of different anion on the morphology of electrode, the adsorption of quinoline and the SER spectra are investigeted. The adsorption peak of quinoline appears in cyclic voltammogram in Cl~- (or Br~-) -containing electrolyte, but not in NV_3~- solution. We also find that the adsorption of quinoline is correlated with Cl~- concentration. This indicates some complex consist of Cl~- and quinolne are produced on Ag surface, Scanning electron microscopy is used to evaluate differences in surface morphology subjected to ORC treatment in different anion solution.The surface morphology of Aq electrode roughened in NO_3~- solution on which no SER signal can be observed differs greatly from that of Ag electrode which roughened in Cl~-(or Br~-)-containing electrolyte.     

水稻叶片叶龄判断方法研究

笔者于1982—1992年对58个水稻品种(包括杂交组合和制种亲本)进行的观察结果表明:水稻外观形态特征——双零叶、葫芦叶、植伤叶和伸长叶枕距是判断水稻叶片叶龄的依据.在秧田期间可用数记法和种谷方向来判断秧苗的叶龄;在水稻移栽后返青分蘖期,可根据第一双零叶、第一类葫芦叶、植伤叶来判断叶龄的变化;在幼穗分化期,可根据第二双零叶、第二类葫芦叶和伸长叶枕距来判断最后3片叶.     

A SERS SPECTRA STUDY OF N-HETEROCYCLE INHIBITOR ON NONUSERS ACTIVE METAL IRON

This paper presents the SERS spectra of quinoline adsorbed on iron deposited on the silver electrode by the cathodic reaction of ferrousion. Adsorption and inhibition mechanism of quinoline were discussed by means of tire SERS spectra.     

THE EFFECT OF ANION ON THE MORPHOLOGY OF ELECTRODE, THE ADSORPTION OF QUINOLINE AND THE SER SPECTRA

The effect of different anion on the morphology of electrode,the adsorption of quinoline and the SER spectra are investigented.The adsortion peak of quinoline appears in cyclic voliammogram in Cl^-(or Br^-) -containing electrolyte,but not in NO3^- solution.We also find that the adsorption of quinoline is correlated with Cl^- concentration.This indicates some complex consity of Cl^- and quinolue are produced on Ag surface.Scanning electron microscopy is used to evaluute differences in surface morphology subjected to ORC treatment in different anion solution.The surjace morphology of Ag elecirode roughened in NO3^- solution on which no SER signal can be lbserved differs greatly from that of Ag electrode which roughened in Cl^-(or Br^-)-containing clectrolyte.