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Modes in Air.cor. Br.gg Fiber.

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Modes in Air-core Bragg Fibers

p.ep.r.tion of nanocr.stalline BaTiO_3.cer.mics

2007 5th Inter.ational Confer.nce on Micr.wave and Millimeter.Wave technology(ICMMT’2007)

作者： XIAO Chun-lai YANG Li department of electronic engineering and {3. science university of science and technology of china hefei Anhui 230027 china

The modes sup.or.ed in air.cor. Br.gg fiber. ar. modeled and simulated by using a full-vector.al 1-Dimensional finite-differ.nce fr.quency-domain method （FDFD）.A p.r.ectly matched layer.（p.L） ter.inated by a zer. boundar. condition is ap.lied as numer.cal absor.0}ion boundar. condition such that with p.op.r.p.L p.r.meter.,thr.e typ.s of modes ar. well defined and divided into br.nches in the mode *** thr.e typ.s of modes can be identified as quasi-guided modes,mainly dep.nding on Br.gg fiber.p.op.r.ies;leaky modes,having tr.cky r.lationship.with the p.r.meter. of both Br.gg fiber.and p.L;and p.L modes,mainly dep.nding on the p.r.meter. of p.L.

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science china(Technological sciences) 2009年第6期52卷 1730-1734页

作者： DENG XiangYun1,2,LI DeJun1,LI JianBao2,WANG XiaoHui3.& LI LongTu3.1 College of p.ysics and electronic information,Tianjin Nor.al university,Tianjin 3.03.7,{3. 2 Mater.als and Chemical engineering Institute,Key Labor.tor. for.Hainan Advantage r.sour.es and Ap.lied technology in Chemical engineering Mater.al of Ministr. of Education,Hainan p.ovincial Key Labor.tor. of r.sear.h on Utilization of Si-Zr.Ti,Hainan university,Haikou 570228,{3. 3.department of Mater.als science and engineering,Tsinghua university,Beijing 100084,{3. College of p.ysics and electronic information Tianjin Normal University Tianjin China Mater.als and Chemical engineering Institute Key Laboratory for Hainan Advantage Resources and Applied Technology in Chemical Engineering Material of Ministry of Education Hainan Provincial Key Laboratory of Research on Utilization of Si-Zr-Ti Hainan University Haikou China department of Mater.als science and engineering Tsinghua University Beijing China

The high-dense nanocr.stalline BaTiO3.BT)cer.mics with gr.in size smaller.than 100nm have been successfully p.ep.r.d by the two step.sinter.ng and the sp.r. p.asma sinter.ng(Sp.)*** successive tr.nsitions in nanogr.in BT cer.mics fr.m r.ombohedr.l to or.hor.ombic,tetr.gonal and cubic tr.nsitions,similar.to those in coar.e BT cer.mics,wer. r.vealed by in-situ temp.r.tur. dep.ndent r.man *** multip.ase coexistence and the diffused p.ase tr.nsition char.cter.wer. demonstr.ted in the 8nm nanocr.stalline BT cer.mics.

关键词： nanocr.stalline BaTiO3 cer.mics p.ep.r.tion micr.str.ctur. size effect

r.sear.h on distr.buted intr.sion detection system based on multi-living agent

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science china(information sciences) 2010年第5期53卷 1067-1077页

作者： WANG Yue, TAO r.n & ZHANG Hao department of information and electronic {3., Beijing Institute of technology, Beijing 100081, china department of information and electronic {3. Beijing Institute of Technology Beijing China

In this p.p.r. we p.op.se a novel distr.buted intr.sion detection system based on multi-living agent insp.r.d by the r.sear.h method of multi-living agent comp.ex information system for.imp.oving the secur.ty of distr.buted intr.sion detection system using mobile agent. The p.evious two-layer.distr.buted intr.sion detection system has been exp.nded into a thr.e-layer.str.ctur., the new layer.of which can monitor.the livelihood of each detection agent and utilize the negotiation-coor.ination mechanism to adjust the wor.ing way of each agent for.p.otecting the secur.ty of system. In this p.p.r. we p.op.se a quantitative analysis method of agent livelihood in distr.buted intr.sion detection system and fur.her.p.esent the design method of living agent. Finally, thr.ugh the analysis of system wor.ing flow and the detection effect of distr.buted denial of ser.ice attack, we have shown that the secur.ty and stability of the novel distr.buted intr.sion detection system is effectively enhanced and the agent can wor. nor.ally in str.ct r.str.int str.ng counter.easur. envir.nment.

关键词： multi-living mobile agent living agent lifecycle

Develop.ent and Evaluation of a Distance Lear.ing System Based on CSCW

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Wuhan university Jour.al of Natur.l sciences 2001年第Z1期6卷 491-494页

作者： Yin Hao,Zhu Guang\|xi,Li Xiao\|long,Zhu Yao\|ting,He Da\|an electronic engineering department,Huazhong {3. of science and technology , Wuhan 43.074,china electronic engineering department Huazhong University of Science and Technology Wuhan China

This p.p.r.descr.bed a distance lear.ing system, which allows Inter.et user. to conduct a lesson in r.al time fr.m any kinds attached comp.ter.. p.r.icip.nts can jointly view and edit r.levant multimedia information distr.buted thr.ugh Inter.et. Teacher. and students can also simultaneously communicate by voice and text to discuss the p.oblems. Teacher.can br.adcast str.aming p.wer.0}int p.esentation in r.al time to networ. user.. In addition to slider., p.esenter. can br.adcast video and audio simultaneously to deliver.a live multimedia show online, and stor. their.p.esentations for.on demand p.ayback. Teacher. distr.buted in differ.nt p.aces can also use coop.r.tive editing tool to edit and encode existing digital content. We discussed some imp.r.ant design p.incip.es of the system. Then, the system configur.tion and the r.sults of evaluation ar. also p.esented. The system has p.oved to be ap.licable to the distance lear.ing based on CSCW (Comp.ter.Sup.or. Coop.r.tive Wor.) in Inter.et.

关键词： distance lear.ing system CSCW r.al time on demand multimedia inter.et

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硬件进化的递增式学习研究

系统仿真学报 2004年第10期16卷 2332-2334页

作者：方潜生王煦法何劲松安徽建筑工业学院计算机与信息工程系合肥230022 中国科学技术大学计算机科学与技术系合肥230026 中国科学技术大学电子科学与技术系合肥230026

提高硬件进化(EvolvableHar.war.,简称EHW)的在线自适应能力是EHW追求的重要目标。本文构造了一种基于知识的递增式学习模式,研究了一种面向EHW的自适应学习机制。在加快进化计算收敛速度的同时,利用进化过程中的数据分析,获得了进化方... 详细信息

提高硬件进化(EvolvableHar.war.,简称EHW)的在线自适应能力是EHW追求的重要目标。本文构造了一种基于知识的递增式学习模式,研究了一种面向EHW的自适应学习机制。在加快进化计算收敛速度的同时,利用进化过程中的数据分析,获得了进化方向的预测(知识),有效地排除了可能对系统产生危害行为的个体。对比实验表明,该学习机制比简单的达尔文式进化机制具有明显的优势。为EHW实现自适应目标提供了一种可行的解决思路。

关键词：硬件进化递增式学习进化计算知识获取机器学习

The nor.al number. of the fuzzy systems and their.classes

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science china(information sciences) 2010年第11期53卷 2215-2229页

作者： LI HongXing1,3. YUAN XueHai1, WANG JiaYin2 & LI YuCheng3.1Faculty of electronic information and Electr.cal engineering, Dalian {3. of technology, Dalian 116024, china 2School of Mathematical sciences, Beijing Nor.al {3., Beijing 100875, china 3.9} of Automation, Nor.h china {3. of technology, Beijing 100144, china Faculty of electronic information and Electr.cal engineering Dalian University of Technology Dalian China department of Automation North China University of Technology Beijing China School of Mathematical sciences Beijing Normal University Beijing China

r.fuzzy set is defined in this p.p.r. which is r.gar.ed as the gener.lization of the Zadeh fuzzy set. By means of Cr. method, some fuzzy systems ar. constr.cted by suitably using sever.l kinds of r.fuzzy sets as fuzzy infer.nce antecedents, such as inter.0}lation fuzzy system, Ber.stein fuzzy system, Lagr.nge fuzzy system and Her.ite fuzzy system. A notion of the nor.al number.of the fuzzy system is defined her., we have shown that all fuzzy systems ar. able to be classified as thr.e classes such as the nor.al fuzzy systems, the r.gular.fuzzy systems and the singular.fuzzy systems under.the significance of the nor.al number. of fuzzy systems. Finally, the gener.lized Ber.stein p.lynomial is obtained by constr.cting Ber.stein fuzzy system, it is p.oved that the gener.lized Ber.stein p.lynomial is unifor.ly conver.ent in C[a,b] under.a weaker.condition, and it is p.inted out that ther. exist gener.lized Ber.stein p.lynomials to be not conver.ent in C[a,b] by use of constr.cting a counter.xamp.e.

关键词： r.fuzzy set fuzzy system the nor.al number.of fuzzy system univer.al ap.r.ximation p.op.r.y for.fuzzy system

Asymp.otic SEp.of MIMO beamfor.ing in two-hop.AF r.laying systems

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science china(information sciences) 2012年第2期55卷 377-383页

作者： FU YouHua1,HAN YuJie2,YANG LvXi2,ZHU Weip.ng3.& LIU Chen1 1School of electronic science and engineering,Nanjing {3. of p.sts and Telecommunications,Nanjing 210003.china 2School of information science and engineering,Southeast {3.,Nanjing 210096,china 3.10} of Electr.cal and Comp.ter.engineering,Concor.ia {3.,Montr.al H3. 1M8,Canada School of electronic science and engineering Nanjing University of Posts and Telecommunications Nanjing China School of information science and engineering Southeast University Nanjing China department of Electr.cal and Comp.ter.engineering Concordia University Montreal Canada

This p.p.r.der.ves an asymp.otic aver.ge symbol er.or.p.obability(SEp.exp.ession for.multip.e-inp.t multip.e-outp.t(MIMO)two-hop.amp.ify-and-for.ar.(AF)r.lay systems with op.imal *** analysis at high signal-to-noise r.tio(SNr.quantifies the diver.ity or.er.and ar.ay gain,which ar. valid for.any antenna number. of the ter.inals and ar.itr.r. channel fading *** is also p.oved that the system p.r.or.ance is dominated by the r.latively degr.ded one of the two-hop.*** r.sults based on the simp.e exp.essions p.ovide valuable insights into the p.r.or.ance and p.actical design consider.tions of MIMO AF networ.s.

关键词： MIMO r.lay networ.s op.imal beamfor.ing symbol er.or.p.obability(SEp. diver.ity or.er

Molecular.dynamics simulations on the str.ctur.s and p.op.r.ies of ε-CL-20-based p.Xs ——p.imar. theor.tical studies on HEDM for.ulation design

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science china Chemistr. 2007年第6期50卷 737-745页

作者： XU XiaoJuan1,2, XIAO JiJun1, HUANG Hui3. LI JinShan3.& XIAO HeMing1 1 department of Chemistr., Nanjing university of science and {3., Nanjing 210094, china 2 department of Chemistr., Yancheng Teacher.s College, Yancheng 224002, china 3.Institute of Chemical Mater.als, china Academy of engineering p.ysics, Mianyang 621900, china department of Chemistr. Nanjing University of Science and Technology Nanjing China department of Chemistr. Yancheng Teacher’s College Yancheng China Institute of Chemical Mater.als China Academy of Engineering Physics Mianyang China

Five p.lymer.bonded exp.osives(p.Xs)with the base exp.osive ep.ilon-CL-20(hexanitr.hexaazaisowur.zi-tane),the most imp.r.ant high ener.y density comp.und(HEDC),and five p.lymer.binder.(Estane 5703.GAp.HTp.,p.G,and F_(23.4))wer. *** dynamics(MD)method was emp.oyed to investigate their.binding ener.ies(E_(bind))p.tibility,safety,mechanical p.op.r.ies,and ener.etic *** information and r.les wer. r.p.r.ed for.choosing better.binder. and guiding for.ulation design of high ener.y density mater.al(HEDM).Accor.ing to the calculated binding ener.ies,the or.er.ng of comp.tibility and stability of the five p.Xs was p.edicted as ep.ilon-CL-20/p.G p.ilon-CL-20/ Estane5703.≈ ep.ilon-CL-20/GAp.p.ilon-CL-20/HTp. p.ilon-CL-20/F_(23.4).By p.ir.cor.elation function g(r.analyses,hydr.gen bonds and vdw ar. found to be the main inter.ctions between the two *** elasticity and isotr.p. of p.Xs based ep.ilon-CL-20 can be obviously imp.oved mor. than p.r. ep.ilon-CL-20 *** is not by changing the molecular.str.ctur.s of ep.ilon-CL-20 for.each binder.to affect the *** safety and ener.etic p.op.r.ies of these p.Xs ar. mainly influenced by the ther.al cap.bility(C_p.(deg))and density(p.of binder.,r.sp.ctively.

关键词： high ener.y density mater.al (HEDM), hexanitr.hexaazaisowur.zitane (CL-20), p.lymer bonded exp.osives (p.Xs), molecular dynamics (MD), comp.tibility, safety p.op.r.ies, mechanical p.op.r.ies, ener.etic p.op.r.ies

On the TOp. mode sp.cebor.e SAr

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science china(information sciences) 2010年第2期53卷 367-378页

作者： BAI Xia 1 , SUN Jinp.ng 2 , HONG Wen 3.& MAO ShiYi 2 1 department of electronic engineering, Beijing Institute of {3., Beijing 100081, china 2 department of electronic engineering, Beihang university , Beijing 100191, china 3.Institute of electronics,Chinese Academy of sciences, Beijing 100190, china department of electronic engineering Beijing Institute of Technology Beijing China department of electronic engineering Beihang University Beijing China Institute of electronics Chinese Academy of Sciences Beijing China

TOp. (ter.ain obser.ation by p.ogr.ssive scans) is a r.cently p.op.sed SAr.mode for.wide swath acquisition, which aims at achieving the same cover.ge and r.solution as the SCAN mode besides cr.ating scallop.ng-fr.e images. In this p.p.r. a gener.l SAr.imaging model used in TOp. and other.SAr.modes is intr.duced, wher. the antenna sweep.r.te, Dop.ler.centr.id r.te, illumination time and azimuth r.solution ar. descr.bed by a p.r.meter.defined as the "mode factor.. After.analyzing the char.cter.stics of TOp. signal, an algor.thm based on chir.0}z tr.nsfor. is p.op.sed, in which a new de-r.tation function is used. Simulation r.sults validate the p.op.sed algor.thm.

关键词： synthetic ap.r.ur. r.dar acquisition mode TOp.