简介:NETWORKTELECOMmagazine,commencedpublicationin1999,isthenetwork&telecommunicationsindust0?sleadingpublicationinChina.specializinginthefieldofopticfibercommunications,accessnetwork,mobilecommunications,CATVnetwork,cablingsystemanddatacommunications;andhasestablisheditsrepuionbyacombinationofauthoritativeeditorialcontent,targetingackcuatlonofhigho.ualitycoveringtheentireChinaregiom
简介:NETWORKTELECOMmagazinecommencedpublicationin1999,isthenetwork
简介:NETWORKTELECOMmagazineisthenetwork&telecommunicationsindustry'sleadingpublicationinChina,specializinginthefieldofopticfibercommunications,accessnetwork,mobilecommunications,CATVnetwork,cablingsystemanddatacommunications;andhasestablisheditsreputationbyacombinationofauthoritativeeditorialcontent,targetingacirculationofhighqualitycoveringtheentireChinaregion.
简介:Themainresearchobjectsinthispaperarethecausessearchingandriskestimatingmethodfortelecomenterprises'financialrisks.Themulti-modefinancingfortelecomenterprisesmakesitflexibletoinducethecapitalandobtaintheprofitbycorrespondingprojects.Buttherearealsopotentialrisksgoingwiththesefinancingmodes.Aftermakinganalysisofcategoriesandcausesoftelecomenterprises'financingrisk,amethodbyAnalyticHierarchyProcess(AHP)isputforwardtoestimatingthefinancingrisk.Andtheauthormakeshersuggestionandopinionbyexampleanalysis,inordertoprovidesomeideasandbasisfortelecomenterprise'sfinancingdecision-making.
简介:Combinedwiththeanalysisofcharacteristicsofthecommunicationindustryandthesustainabledevelopmentrequirementsoftheenterprise,consideringthecurrentandthelong-termdevelopmentandtheexternalstakeholderinterestoftheenterprise,thesustainabledevelopmentindexsystemoftelecomoperatorwasconstructedincludingoperationmanagementability,innovationdevelopmentabilityandstrategyleadingability.Takingatelecomoperatoranditssubsidiaryasanexample,theindexsystemwasdesignedandthedesignelementsandassessmentrequirementswerealsopresentedclearly.Theevaluationandanalysisoftheindexcanhelpenterpriseseffectivelyidentifythekeyshortcomingsofsustainabledevelopment,andbetterimprovethesustainabledevelopmentability.
简介:Thehigh-temperaturesensitivityofthesiliconmaterialindexlimitstheapplicationsofsilicon-basedmicro-ringresonatorsinintegratedphotonics.Torealizealowbutbroadbandtemperature-dependent-wavelength-shiftmicroringresonator,designingabroadbandathermalwaveguidebecomesasignificanttask.Inthiswork,weproposeabroadbandathermalwaveguidethatshowsaloweffectivethermo-opticalcoefficientof1×10-6∕Kfrom1400to1700nm.Theproposedwaveguideshowsalow-lossperformanceandstablebroadbandathermalpropertywhenitisappliedtoringresonators,andthebendinglossofringresonatorswitharadiusof>30μmis0.02dB/cm.
简介:Thecontinuousinvestmentintomanpowerresource,istheradicalpowertoassurethesustainabledevelopmentofenterprises.Theenterprisesbothathomeandabroadattachhighimportancetothecontinuouseducationoftheiremployeesandconsolidatetrainingtoinspiretheiremployees.Inordertofaceincreasinglydrasticglobalcompetition,thetelecomenterprisesinourcountryshouldconsolidatecontinuouseducation,maketrainingplanstoadapttothelong-termdevelopmentoftheenterprisesandestablishtheeffectivemechanismofencouragementofcontinuouseducation.
简介:Telecomenterprisesareinurgentneedofalargeamountoffundsforupdatingnetworksandexpandingmarketshares,whileasset-backedsecuritizationisthemostrapidlyandvigorouslygrowingproductoffinancialinnovationintheinternationalcapitalmarket.Sincetelecomassetischaracterizedbylongrecoveryperiod,poorliquidity,highqualityandstablecashflow,whicharethebasicconditionsforusingasset-backedsecuritizationtofinance,asset-backedsecuritizationcanbeanewfinancingwayfortelecomenterprises.
简介:Thispapergivesanewmethodintotheevaluatingsystemoftelecominvestmentprojects,I.e.RealOption.ThismayovercomethedefectsresultedfromemployingNetPresentValue(NPV),whichisnowusedintheevaluationoftelecomprojects.AtheoreticalanalysisofRealOptionisprovided,followedbyanexampleoftelecominvestmentprojecttoillustratethedifferencesbetweenthetwomethods.
简介:Weprovidethefirstdemonstrationofpureredemissioninthevisiblelightregionviathree-photonexcitationinmonodisperseNa_3ZrF_7:Ernanoparticles(NPs)byusingalaseroperatinginthetelecommunicationband.NPsof~22nmindiameteraresynthesizedat260°Cbythethermaldecompositionmethod.TheexperimentalresultsrevealthattheNa_3ZrF_7:ErNPsexhibitpureredemissioninthevisibleregionunder1480nmlaserexcitation,andtheemissionintensityissignificantlyinfluencedbytheEr~(3+)ionconcentration.Thedecaytimesofthe~4S_(3∕2)→~4F_(15∕2)and~4F_(9∕2)→~4F_(15∕2)transitionsoftheEr~(3+)ionsat540and655nm,respectively,arereducedbyincreasingtheEr~(3+)ionconcentrationintheNa_3ZrF_7:ErNPs.Thesuppressedemissionintensityresultfromthedefect-relatedquenchingeffect:whentrivalentEr~(3+)ionsreplactetravalentZr~(4+)ions,extraNationsandFvacanciesareformedtore-balancethechargeintheNa_3ZrF_7matrix.TheemissioncoloroftheNa_3ZrF_7:ErNPsisrelatedtothecrossrelaxationbetweenEr~(3+)ions.Theseresultsprovideanimportantsteptowardmoreeffectivebiologicalimagingandphotodynamictherapybyminimizingthescatteringoftheexcitationlightandincreasingthepenetrationdepth.