学科分类
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22 个结果
  • 简介:Organicconductorisakindoforganiccompoundwhichhasspecialelectronicandmagneticproperties.Theresearchoftheorganiccompoundshasreceivedconsiderableattentionbecauseoftheirpotentialapplicationsinmanyareas.Themolecularconductiveunitsaretheoreticallyinvestigatedaswellastheirenergygapandchargedistribution.Therelationshipofconductivityandmicro-mechanismisdiscussed.

  • 标签: ORGANIC conductor ENERGY BAND CONDUCTIVITY
  • 简介:ThewholechemicaletchingprocessonaP-typepolycrystallinesiliconsubstratewithresistivity1-2Ω·cmisdescribed.Theformationmechanismofporouspolycrystallinesilicon(PPS)microstructurewasinvestigated.ThosehowtheinitialpitswereformedandanuniformmorphologyofPPSwasobtainedareexplained.Twotypesofetchingmechanismwerecharacterizedasdefectcontrolreactionanddiffusioncontrolreaction.ThemorphologyformedaftertheisotropicacidicsolutionetchingwithdifferentetchingtimeandHF/HNO3concentrationwascomparedwiththeeffectofthesameetchingprocessafteranisotropicalkalineetching.Thestudyshowedthatthethicknessofporouspolycrystallinesiliconlayerwithchemicalacidicetchingentirelydependedontheexistenceofvarioustypesofdefects.

  • 标签: PPS 扩散控制 缺陷控制 点缺陷 线缺陷
  • 简介:FeedbackMechanisminDecisionSupportSytemsTXFedbackMechanisminDecisionSupportSystemsSunZhanshanInstituteofSE.DalianMaritimeUnive...

  • 标签: : FEEDBACK MECHANISM DECISION MAKING DECISION
  • 简介:SurvivabilityisoneoftheimportantissuesinATM-basednetworkssineevenasinglenetworkelementfailuremaycauseaseriousdataloss.Thispaperintroducesanewrestorationmechanismbasedonmulti-layerATMsurvivablenetworkmanagementarchitecture.ThismechanismintegratesthegeneralcontrolandrestorationcontrolbyestablishingtheWorkingVPslogicalnetwork,BackupVPslogicalnetworkandsparelogicalnetworkinordertooptimallyutilizethenetworkresourceswhilemaintainingtherestorationrequirements.

  • 标签: 异步传输模式 可生存性 恢复 集中控制
  • 简介:Theγ-rayradiationwillspeedupthedischargeofthestoredchargeinnonvolatileMNOSstructure.Theradiationabsorptionmechanismtoenhancethedischargeisdiscussed.Adirectradiationemissionmodelfromtheinterfacetrapsdistributingbothinenergylevelandinspaceisgiven.Thetheoreticalresultsbasedonthismodelareingoodagreementwithexperimentalmeasurement.

  • 标签: MNOS Γ辐射 直接辐射模式 辐射吸收
  • 简介:ThispaperproposesanovelsessionsetupmechanisminIMS(IPMultimediaSubsystem)byintroducingthefunctionalentitytermedVSS(VisitorSubscriberServer)whichisusedtoprovideregistrationandlocationmanagement.ThenewmechanismaimsatimprovingsessionsetupprocedurebyabettermentoflocationmanagementinIMS.Throughtheuseoftwo-tiersubscriberinformationdatabaseconstitutedbytheHSS(HomeSubscriberServer)andtheVSS,thenewmechanismseperatestheregistrationprocedureandlocationmanagementfromtheS-CSCF(Serving-Call'SessionControlFunction),andmakesthembehandledbytheVSS.Atthesametime,thenewmechanismupdatesthesignalingprocedureofregistrationandsessionsetup.WithVSSbasedlocationmanagement,thecostofregisterationandsessionsetupprocedureaswellasthedelayofsessionsetupprocedurebecomelower.Thecostanddelayfunctionsofthenewsessionsetupmechanismaswellasthecostfunctionofnewregisterationarededuced.Then,simulationsandanalysisverifythattheperformanceofthisnewmechanismgetsthebenefitincostandtime.

  • 标签: VSS IMS 设置 用户服务器 IP多媒体子系统 位置管理
  • 简介:一有效器官光电(OPV)有indium-tin-oxide/CuPc/C60/Ag结构的房间被改变器官的层的电影厚度调查了。高开电路的电压(V0.5V的OC),电线走火电流密度(J5.81mA/cm2的SC),和高度驱动变换效率(η1.2%的p)在最佳电影厚度被完成。结果证明材料厚度是到房间优化的一个重要因素,特别为最大化象减少房间电阻一样的吸收率。当堵住10nm的层的BCP激子被介绍,试验性的结果也显示力量变换效率从1.2%~1.54%增加。

  • 标签: 油膜厚度 分子太阳能电池 有机层 OPV电池
  • 简介:Fromseveralmodelsaboutdamagemechanis,thedamagemecanismofopticalfilmsandthefactorswhichaffectthedamagethresholdaredescribedexperi-mentallyandtheoretically.Somereasonableproposalsaregivenisthispaperonhowtoselectthehigh-thresholdfimls.

  • 标签: 光学薄膜 激光器 损坏机理
  • 简介:Aprincipalchallengeinsupportingreal-timevideoservicesoverATMistheneedtoprovidesynchronousplay-outinthefaceofstochasticend-to-endnetworkdelays.Inthispaper,anintelligenttrafficsmoothmechanism(ITAM)isproposedtomeetthecontinuityrequirementwhichiscomposedofaback-propagationneuralnetwork(BPNN)trafficpredictoraplay-outbuffer,andafuzzyneuralnetwork(FNN)basedplay-outratedeterminator.TheBPNNtrafficpredictoronlinepredictsthemeanpacketrateofthetrafficinthefutureinterval(FI)andtheFNNisdesignedtoadaptivelydeterminatetheplay-outtimeaccordingtothenumberofpacketsinthebufferandthetrafficcharacterpredicted.Simulationresultsshothatcomparedtothewindowmechanism,ITSMachieveshighcontinuitywithaccepteddelay.Furthermore,ITSMcanbeadaptivelymodifiedtomeettheQoSofdifferentkindsofservicesbyFNNparametertraining.

  • 标签: 异步传输模式 服务质量 模糊神经网络 多媒体通信 反传网络
  • 简介:AlosslessimagesecretsharingusingasimpleBooleanoperationisproposed.Theconceptofvisualcryptographyinthesecretsharingschemeisusedtoredesignalosslesssecretsharingscheme.Toensurethatthereconstructedimageisthetruesecretimage,anauthenticationmechanismisimportedintotheproposedschemetoverifywhethertheshadowsareauthenticbeforereconstructingthesecretimage.TheproposedschemedeliversmuchmoreeffectiveperformancethanChenandWu'sscheme.

  • 标签: 秘密共享方案 验证机制 布尔操作 布尔运算 视觉密码 图像
  • 简介:Wehaveanalyzedtheorder-disorderingvarianceduetoresonanceeffectandthenonlinearbehavioroffarinfraredraylaser(FIRL)-biologicalsysteminteraction.TheanalyticresultsshowthattheinteractionbetweenthelivingbiologicalsystemandFIRLcanproduceresonanceexcitationeffect,andsotheoriginalhighorderedstateofthesystemcanbedestroyedandthustheconformationvariationinthesystemcanbeproducedunderfurtheractionofthelaser.Inaddition,wehaveanalyzedthenonlinearpropertiesoftheFIRLbio-moleculeinteractionandexplainedthemutagenesiseffectsofFIRL.ThetheoreticanalysisisconsistentwiththeresultsofFIRLmutagenesisbreedingtest.

  • 标签: 遗传变异 红外射线 激光技术 生物系统 激励效果
  • 简介:这篇文章描述在一个无线网孔网络分享系统的一个合作文件的一个新模型。作者的途径是开发基于机会主义的随机的线性网络编码分享机制的一个有效、合作的文件。在这机制以内,每个节点根据合作优先级播送它的包的随机的线性联合,它根据对它的邻居节点的节点可能的贡献以一种分布式的方式被计算。与这机制,一个节点越贡献其它,节点越有机会首先恢复全部文件。这里的兴趣的表演度量标准是:延期被送到直到在一个文件的所有包所有节点,和一种理想的包尺寸,由作者能得到最小的传播延期的使用。没有随机的线性网络编码,通过广泛的模拟,作者在一个无线网孔网络把他们的机制与当前的传播进程作比较。作者发现用他们的机制,节点能合作地与更少的传播时间分享全部文件并且没有随机的线性网络,比当前的传播进程推迟。

  • 标签: 无线MESH网络 文件共享系统 合作机制 网络编码 线性组合 网状网络
  • 简介:根据有房间膜的电的偶极子时刻的液体水晶模型,电的显微镜的机制和有房间膜的激光的相互作用的thermology效果被研究由电磁,量力学和量统计。我们在极化效果和激光房间膜相互作用的鈥渢e升起mperature效果鈥?上导出公式。理论研究的结果能解释一些实验。CLC数字R312这个工作被中国(号码第60068001a号码30360068)的国家自然科学基础支持,中国(No:2000A0021M和2006E0091M)和云南的科学基础的云南省的NSF师范大学。

  • 标签: 激光 细胞膜 相互作用 显微机制 量子理论分析
  • 简介:FuzyLogicBasedEvolvingSystemandOneKindofCompetitionMechanismZhongxiong,HuWanjun&PengFeiAutomationSystemInstitute,NorthernJiao...

  • 标签: FUZZY LOGIC EVOLVING system Competing controller.
  • 简介:MolecularDopedPolymerLightEmitingDiodeswithAir-stableAluminumasCathode①②CHENBaijun,HOUJingying.XUEShanhua,LIUShiyong(StateKey...

  • 标签: Display LIGHT EMITTING Diode MOLECULAR DOPED
  • 简介:Atpresent,themajordrawbackformobilephonesistheissueofpowerconsumption.Asoneofthealternativestodecreasethepowerconsumptionofstandard,power-hungrylocation-basedservicesusuallyrequiretheknowledgeofhowindividualphonefeaturesconsumepower.Atypicalphonefeatureisthattheapplicationsrelatedtomultimediastreamingutilizemorepowerwhilereceiving,processing,anddisplayingthemultimediacontents,thuscontributingtotheincreasedpowerconsumption.Thereisagrowingconcernthatcurrentbatterymoduleshavelimitedcapabilityinfulfillingthelong-termenergyneedfortheprogressonthemobilephonebecauseofincreasingpowerconsumptionduringmultimediastreamingprocesses.Consideringthis,inthispaper,weprovideanofflinemeaningsleep-modemethodtocomputetheminimumpowerconsumptioncomparingwiththepower-onsolutiontosavepowerbyimplementingenergyrateadaptation(RA)mechanismbasedonmobileexcessenergylevelpurposetosavebatterypoweruse.OursimulationresultsshowthatourRAmethodpreservesefficientpowerwhileachievingbetterthroughputcomparedwiththemechanismwithoutrateadaptation(WRA).

  • 标签: Green communication 4 generation long TERM
  • 简介:Wirelesssensornetworks(WSNs)arebasedonmonitoringormanagingthesensingareabyusingthelocationinformationwithsensornodes.Mostsensornodesrequirehardwaresupportorreceivepacketswithlocationinformationtoestimatetheirlocations,whichneedslotsoftimeorcosts.Inthispaperweproposedalocalizationmechanismusingamobilereferencenode(MRN)andtrilaterationinWSNstoreducetheenergyconsumptionandlocationerror.Thesimulationresultsdemonstratethattheproposedmechanismcanobtainmoreunknownnodeslocationsbythemobilereferencenodemovingschemeandwilldecreasestheenergyconsumptionandaveragelocationerror.

  • 标签: 无线传感器网络 移动节点 机制 本地化 传感器节点 网格
  • 简介:Magnesiumoxide(MgO)nanowiresweresynthesizedonthegold-coatedSi(100)andMgO(100)substratesatlowertemperature(600℃)bypulsedliquidinjectionmetalorganicchemicalvapordeposition(MOCVD).Thegoldcatalystcouldbefoundonthetipsofnanowires,whichpresentsthevapor-liquid-solid(VLS)growthmechanism.Reactivespecies(oxygenormagnesium)havestrongeffectsonthegrowthofnanowires.Abundantreactivespecieskilltheverticallyalignednanowirestoberandomlyalignedonesorevenchangetheverticalgrowthmodetothehorizontalgrowthmodewithsurface-parallelnanowires.Usually,nanowireswithlargeraspectratio(>10,aspectratio=length/diameter),higherdensity(>500/μm2)andsmallerdiameter(≤20nm)canbeeasilysynthesizedwithlongerinjectionperiod(≥2s),smallerinjectionmass/period(≤4.6mg)andsuitableoxygenpartialpressure(2.4Torr).

  • 标签:
  • 简介:Adual-channelaccessmechanismtoovercomethedrawbackoftraditionalsingle-channelaccessmechanismfornetwork-on-chip(NoC)isproposed.Intraditionalsingle-channelaccessmechanism,everyInternetprotocol(IP)hasonlyonechanneltoaccesstheon-chipnetwork.Whenthenetworkisrelativelyidle,theinjectionrateistoosmalltomakegooduseofthenetworkresource.Whenthenetworkisrelativelybusy,theejectionrateissosmallthatthepacketsinthenetworkcannotleaveimmediately,andthustheprobabilityofcongestionisincreased.Inthedual-channelaccessmechanism,theinjectionrateofIPandtheejectionrateofthenetworkareincreasedbyusingtwooptionalchannelsinnetworkinterface(NI)andlocalportofrouters.Therefore,thecommunicationperformanceisimproved.Experimentalresultsshowthatcomparedwithtraditionalsingle-channelaccessmechanism,theproposedschemegreatlyincreasesthethroughputandcutsdowntheaveragelatencywithreasonableareaincrease.

  • 标签: 片上网络 存取机制 双通道 成本效益 机制设计 访问机制
  • 简介:Accesscontrolenablestheownerstoassigndifferentusersdifferentpermissionstoseedifferentviews.Thecurrentblogsystemdoesnotsupportfine-grainedauthorization.Thatis,thebloggersdisallowtojustassignpartialcontentsoftheblogposts(i.e.,aparagraphorseveralparagraphs)toreaders.Themanagementcostisnodoubttobesignificantlyincreasedwhilehandlingtheauthorizationsonthehugeamountofblogarticles.Inthispaper,weproposeaschemeforsupportingafine-grainedaccesscontrolmechanismonblogarticles.Theadvantageisthatbloggersareabletoauthorizepartialcontentsofblogpoststodifferentusersorgroupsofusers.

  • 标签: 访问控制机制 细粒度 博客 能力 操作 用户组