计算机图形学和模式识别在定量药物设计中的应用

一、引言本文简要介绍定量药物设计的概念及计算机图形学和模式识别在定量药物设计中的典型应用,并介绍了一个基于计算机图形学和模式识别的辅助药物设计系统。最后将指出它们的应用前景及有待解决的一些问题。     

油色谱在线监测装置常见故障分析

油色谱在线监测装置通过对变压器油中溶解气体的实时检测,实现对变压器早期潜伏性故障的准确评估,其效果已在电网系统内得到充分肯定。但是在应用过程中,在线监测装置本身故障情况也越发频繁。首先简述了目前市面上主流的油色谱在线监测装置测试原理,分析常见的故障类型,并结合几起油色谱在线监测装置现场缺陷案例,阐述装置目前存在的一些问题。最后从保障变压器稳定运行的角度对在线监测装置提出运行维护建议。     

“一村一警”筑牢农村防火墙

10月30日上午，随着广西壮族自治区合山市公安消防大队4名干部挂职辖区派出所任副所长，专职消防工作，标志着该地区实行“一村一警”消防专项治理措施向纵深推进。     

略论上市公司反收购的法律规制

我国虽有多个法律部门对上市公司收购进行调整，但均未对反收购措施加以规范。文章介绍了美国、英国和欧盟对反收购的法律规定，建议在我国增设反收购法律规定。     

INVESTIGATION ON THE COMPUTATIONAL PROPERTIES OF INTRANEURONAL DYNAMICS

This paper aims at exploring computational properties of dynamic processes in neu-ral systems,studying their mathematical formulation,and applying the results to artificial neuralnetwork modeling.The stimulus-response processes in neurons are first introduced briefly,thenproperties of neurons described by the Hodgkin-Huxley equations are analyzed.After studyinghow to simplify,the Hodgkin-Huxley equations while maintaining its properties,the concept of dy-namic neuron model is proposed.It is pointed out that the neuron model should include internalstates in order to obtain time-variant thresholds,such as refractory periods of neurons.Finallywe discuss problems related to neural network models based on pulse-stream communication andthe contribution of intraneuronal dynamics to collective properties of the neural network.     

Synthesis, characterization and antitumor activity of rare earth （Y, La） substituted phosphotungstates containing 5-fluorouracil

Two rare earth substituted Keggin-type phosphotungstates containing 5-fluorouracil,K10C4H4FN2O2Y(PW11O39)2·10H2O(FYPW) and K9(C4H4FN2O2)2La(PW11O39)2·18H2O(FLaPW)were synthesized in aqueous solution,and the structures were characterized by Fourier transform infrared spectroscopy(FT-IR),element analysis,inductively coupled plasma spectrometry(ICP),X-ray powder diffraction(XRD) and 1 H nuclear magnetic resonance(NMR).Thermal analysis showed that the decomposition processes of the two compounds could be divided into three steps,the loss of crystal water,the decomposition of 5-fluorouracil unit and the decomposition of Keggin-type polyanions. The in vitro cytotoxicities against HEK 293,HeLa and HepG-2 cells were studied by methyl thiazolyl tetrazolium(MTT)assay.The results showed that FYPW and FLaPW had higher antitumor activities than 5-fluorouracil,C4H4FN2O2H2PW12O40·8H2O and rare earth substituted polyoxometalates K11Ln(PW11O39)2·nH2O(Ln=Y,La).It was concluded that introducing 5-fluorouracil and rare earth(Y or La)into its structure was a considerable way to enhance antitumor activities of polyoxometalates.     

异号权重模板CNN的似细化特性及其应用

本文发现并以定理的形式证明了具有异号权重模板的细胞神经网络系统在非均匀增益分段性输函数下的细 化稳态性性。     

人——计算机界面与认知系统工程

随着计算机应用的普及,人—计算机界面性能己成为计算机系统成功与失败的主要因素之一,人机界面技术已成为新一代计算机的关键技术。本文介绍了人机界面研究的一门基础学科——认知系统工程,综述了人机界面研究的现状,并结合作者的研究工作提出了人机界面领域可能的研究课题.     

长城微机仿真日立T-560/20终端及GW560汉字仿真软件

长城微机仿真日立T-560/20终端及GW560汉字仿真软件,是由中国长城计算机集团公司和日立公司及日本INTER COM公司合作开发成功的,用国产化的长城系列机仿真日立M和L系列配置的T-560终端功能,可近程或远程连接日立主机系统,极其方便地在长城微机上实现各种联机操作,如数据资料查询、提取信息、资料录入、文件传输及程序的相互开发等。