简介：Organicconductorisakindoforganiccompoundwhichhasspecialelectronicandmagneticproperties.Theresearchoftheorganiccompoundshasreceivedconsiderableattentionbecauseoftheirpotentialapplicationsinmanyareas.Themolecularconductiveunitsaretheoreticallyinvestigatedaswellastheirenergygapandchargedistribution.Therelationshipofconductivityandmicro-mechanismisdiscussed.
简介：ThewholechemicaletchingprocessonaP-typepolycrystallinesiliconsubstratewithresistivity1-2Ω·cmisdescribed.Theformationmechanismofporouspolycrystallinesilicon(PPS)microstructurewasinvestigated.ThosehowtheinitialpitswereformedandanuniformmorphologyofPPSwasobtainedareexplained.Twotypesofetchingmechanismwerecharacterizedasdefectcontrolreactionanddiffusioncontrolreaction.ThemorphologyformedaftertheisotropicacidicsolutionetchingwithdifferentetchingtimeandHF/HNO3concentrationwascomparedwiththeeffectofthesameetchingprocessafteranisotropicalkalineetching.Thestudyshowedthatthethicknessofporouspolycrystallinesiliconlayerwithchemicalacidicetchingentirelydependedontheexistenceofvarioustypesofdefects.
简介：SurvivabilityisoneoftheimportantissuesinATM-basednetworkssineevenasinglenetworkelementfailuremaycauseaseriousdataloss.Thispaperintroducesanewrestorationmechanismbasedonmulti-layerATMsurvivablenetworkmanagementarchitecture.ThismechanismintegratesthegeneralcontrolandrestorationcontrolbyestablishingtheWorkingVPslogicalnetwork,BackupVPslogicalnetworkandsparelogicalnetworkinordertooptimallyutilizethenetworkresourceswhilemaintainingtherestorationrequirements.
简介：Theγ-rayradiationwillspeedupthedischargeofthestoredchargeinnonvolatileMNOSstructure.Theradiationabsorptionmechanismtoenhancethedischargeisdiscussed.Adirectradiationemissionmodelfromtheinterfacetrapsdistributingbothinenergylevelandinspaceisgiven.Thetheoreticalresultsbasedonthismodelareingoodagreementwithexperimentalmeasurement.
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.
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.
简介：AlosslessimagesecretsharingusingasimpleBooleanoperationisproposed.Theconceptofvisualcryptographyinthesecretsharingschemeisusedtoredesignalosslesssecretsharingscheme.Toensurethatthereconstructedimageisthetruesecretimage,anauthenticationmechanismisimportedintotheproposedschemetoverifywhethertheshadowsareauthenticbeforereconstructingthesecretimage.TheproposedschemedeliversmuchmoreeffectiveperformancethanChenandWu'sscheme.
简介：Wehaveanalyzedtheorder-disorderingvarianceduetoresonanceeffectandthenonlinearbehavioroffarinfraredraylaser(FIRL)-biologicalsysteminteraction.TheanalyticresultsshowthattheinteractionbetweenthelivingbiologicalsystemandFIRLcanproduceresonanceexcitationeffect,andsotheoriginalhighorderedstateofthesystemcanbedestroyedandthustheconformationvariationinthesystemcanbeproducedunderfurtheractionofthelaser.Inaddition,wehaveanalyzedthenonlinearpropertiesoftheFIRLbio-moleculeinteractionandexplainedthemutagenesiseffectsofFIRL.ThetheoreticanalysisisconsistentwiththeresultsofFIRLmutagenesisbreedingtest.
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。
简介：Atpresent,themajordrawbackformobilephonesistheissueofpowerconsumption.Asoneofthealternativestodecreasethepowerconsumptionofstandard,power-hungrylocation-basedservicesusuallyrequiretheknowledgeofhowindividualphonefeaturesconsumepower.Atypicalphonefeatureisthattheapplicationsrelatedtomultimediastreamingutilizemorepowerwhilereceiving,processing,anddisplayingthemultimediacontents,thuscontributingtotheincreasedpowerconsumption.Thereisagrowingconcernthatcurrentbatterymoduleshavelimitedcapabilityinfulfillingthelong-termenergyneedfortheprogressonthemobilephonebecauseofincreasingpowerconsumptionduringmultimediastreamingprocesses.Consideringthis,inthispaper,weprovideanofflinemeaningsleep-modemethodtocomputetheminimumpowerconsumptioncomparingwiththepower-onsolutiontosavepowerbyimplementingenergyrateadaptation(RA)mechanismbasedonmobileexcessenergylevelpurposetosavebatterypoweruse.OursimulationresultsshowthatourRAmethodpreservesefficientpowerwhileachievingbetterthroughputcomparedwiththemechanismwithoutrateadaptation(WRA).
简介：Wirelesssensornetworks(WSNs)arebasedonmonitoringormanagingthesensingareabyusingthelocationinformationwithsensornodes.Mostsensornodesrequirehardwaresupportorreceivepacketswithlocationinformationtoestimatetheirlocations,whichneedslotsoftimeorcosts.Inthispaperweproposedalocalizationmechanismusingamobilereferencenode(MRN)andtrilaterationinWSNstoreducetheenergyconsumptionandlocationerror.Thesimulationresultsdemonstratethattheproposedmechanismcanobtainmoreunknownnodeslocationsbythemobilereferencenodemovingschemeandwilldecreasestheenergyconsumptionandaveragelocationerror.
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).
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.
简介：Accesscontrolenablestheownerstoassigndifferentusersdifferentpermissionstoseedifferentviews.Thecurrentblogsystemdoesnotsupportfine-grainedauthorization.Thatis,thebloggersdisallowtojustassignpartialcontentsoftheblogposts(i.e.,aparagraphorseveralparagraphs)toreaders.Themanagementcostisnodoubttobesignificantlyincreasedwhilehandlingtheauthorizationsonthehugeamountofblogarticles.Inthispaper,weproposeaschemeforsupportingafine-grainedaccesscontrolmechanismonblogarticles.Theadvantageisthatbloggersareabletoauthorizepartialcontentsofblogpoststodifferentusersorgroupsofusers.
简介：Themicroscopicmechanismoflowlevellaserirradiation(LLLI)mendingrheologyforbloodisanalyzedbythequantumtheory.Theresultsshowthatthelasercanresolvethefibrinclot,sothepropertyofbloodrheologyisimproved,andsomebondsofthecholesterolinbloodarefracturedbythelowlevellaser(LLL).Hencetheratioofmembranecholesteroltomembranephosphatideoftheredcellisreduced,andthenthebloodcirculationcanbeimproved.Theclinicalcuredtestsandsomecorrelativetestdatacanbeexplainedbythetheoreticalanalysesinthispaper.
简介：Theultraviolet(UV)bandedgephotorefractivityofLiNbO_3:Zrat325nmhasbeeninvestigated.Theexperimentalresultsshowthattheresistanceagainstphotorefractionat325nmisquiteobviousbutnotasstrongasthatat351nm,whenthedopingconcentrationofZrreaches2.0mol%.ItisreportedthatthephotorefractivityinothertetravalentlydopedLiNbO_3crystals,suchasLiNbO_3:HfandLiNbO_3:Sn,isenhanceddramaticallywithdopingconcentrationoverthreshold.HerewegiveanexplicitexplanationonsuchseemlyconflictingbehaviorsoftetravalentlydopedLiNbO_3,whichisascribedtothecombinedeffectofincreasedphotoconductivityandtheabsorptionstrengthofthebandedgephotorefractivecenters.
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