简介:Thepostalsavingslatelyopenedhasmadegreatprogress.Butwhatistheoriginaladvantageofthepostalsavings?Inthelastfewyears,manyexpertshaveconsideredthattheadvantageliesinthelargemumberofpostaloffices.Thispaperproposesanewviewpoint-thePostalIndividualFinance(PIF)anddiscussitscharacteristics.Then,we'sssetupanddescribetheabstractmodelsofPIF.Finally,we'llpointouttheinfluenceofPIFonthestructureofpersonalinvestmentandflowofthenationalcurrency.
简介:TherealDirectionOfArrival(DOA)varieswithtimeinmobilecommunicationsystem.Insuchsituation,theperformanceofconventionalbeamformerswillbedegradedobviously.QuantumSignalProcessing(QSP)beamformerisinsensitivetoDOAerrors,thusitcanachievestableoutputperformanceinsuchcircumstance.ThisletterverifiedtheeffectivenessandfeasibilityoftheQSPbeamformerbysimulationresults.
简介:ThelimitsofparameterγinFASTTCParestudiedinthispaper.AcontinuoustimefluidflowmodelofthelinkbufferisconsideredtocreatealinearcontrolsystemrelatedtoFASTTCP.Linearingthefluidflowmodelandwindowcontrolmodel,theLaplacetransformversionofcongestioncontrolsystemarepresented.Itresultsinanegativefeedbacksystemwithopenlooptransferfunction.WiththeanalysisofNyquistcurveofthesystem,asufficientconditiononasymptoticalstabilityofFASTTCPcongestionwindowrelatedtotheparameterγisobtained.Packetlevelns-2simulationsareusedtoverifythetheoreticalclaims.
简介:MaximIntegratedProducts(MXIM)推出MAX1577Z/MAXl577Y型高效1x/2x电荷泵,可为自光LED提供高达1.1A的调节电流(可保证800mA)。采用独有的自适应模式开关技术,可为摄像模式或背光提供极高的效率(高达92%)。即使是在低电池电压情况下,其极小的开环输出阻抗仍可实现最大的自光LED闪光灯亮度。这两款器件仅需三个微型陶瓷电容,省去了升压型DC/DC转换器和薄型电感器,确保满足翻盖器式手机对器件高度的要求。MAX1577Z/MAX1577Y的1MHz高速开关频率可使用非常小的外部元件。经过优化的稳压方案确保具有低EMI和低输入纹波。
简介:TheenvironmentofthepostalindustryinChinahasexperiencedtremendouschangesinthepastfewyears.TheenvironmentalchangeshavesomeeffectsontheelementsthatdecidetheservicestructureofChinaPost.Insuchcontext,thecurrentservicestructureofChinaPostneedssomeimprovementstoadaptitselftothechangingenvironment.AimingattheoptimizationoftheservicestructureofChinaPost,thispaperreviewsthelawofitsdevelopmentandmakesananalysisofitscurrentcharacteristicsandtheexistingproblems.
简介:Themainresearchobjectsinthispaperarethecausessearchingandriskestimatingmethodfortelecomenterprises'financialrisks.Themulti-modefinancingfortelecomenterprisesmakesitflexibletoinducethecapitalandobtaintheprofitbycorrespondingprojects.Buttherearealsopotentialrisksgoingwiththesefinancingmodes.Aftermakinganalysisofcategoriesandcausesoftelecomenterprises'financingrisk,amethodbyAnalyticHierarchyProcess(AHP)isputforwardtoestimatingthefinancingrisk.Andtheauthormakeshersuggestionandopinionbyexampleanalysis,inordertoprovidesomeideasandbasisfortelecomenterprise'sfinancingdecision-making.
简介:Genomicislands(Gis)areoneofthemostimportantcomponentsforcyanobacterialgenome.TheGiscodehasmanyfunctions,suchassymbiosis,pathogenesis,andadaptation.Inthisarticle,wepredictandanalyzetheGisinSynechocystissp.PCC6803bybioinfomatics,andtheresultsshowthatISL1,ISL8,andISL16arehomologouswithmanyotherbacteria,andtheyinvolveinbasicreactionsandhaveaconservativeevolution.Onthecontrary,ISL15hasauniquesequenceandfunctiononlyforSynechocystissp.PCC6803.MostofGisplayaroleingenomerearrangementbecausetheyhavelotsoftransposase.Moreover,wefindthatrecombinationandhorizontaltransferofGisareimportantfactorstoaffectthedistributionofnon-codingRNA.Ourworkcontributestoacomprehensiveunderstandingofgenomicislandsandtheirimpactongenomeofcyanobacteria.
简介:Thispaperanalyzestherelationshipbetweencapacityanddynamicsinrecurrentcorrelationneuralnetwork,andpointsoutthatinsomeconditionstherecurrentcorrelationneuralnetworkhashighmemorycapacity.Thenthispaperpresentsseveralmethodsforimprovingtheperformance.
简介:AtypeofdigitalchaoticeneryptionsystemwasproposedinRef.[1]whichusesaclassof1-Dpiecewiselinear(PWL)maptorealizechaoticencryptionanddecryptionsystemthroughtheinversesystemapproach.Inthegeneralstructureofencryptionsystem,adynamicalsystem∑(·)isusedtoconnectthelinearcombinationofn-orderdelaywiththeinputterminal.Inthispaperweshowthatthiscryptosystemcannotfrustratechosen-ciphertextattack.Atypeofchaoticencryptionsystembasedonself-synchronizingstreamcipherisproposed.Thissystemcanavoidchosen-ciphertextattackandhashighersecurity.
简介:Thispaperdealswithinternallygeneratednoiseofbioelectricamplifiersthatareusuallyusedforprocessingofbioelectricevents.Themainpurposeofthispaperistopresentaprocedureforanalysisoftheeffectsofinternalnoisegeneratedbytheactivecircuitsandtoevaluatetheoutputnoiseoftheauthor'snewdesignedbioelectricamplifierthatcausedbyinternaleffectstotheamplifiercircuititselfinordertocompareitwiththenoisegeneratedbyconventionalamplifiers.Theobtainedanalysisresultsofinternallygeneratednoiseshowedthatthetotaloutputnoiseofbioelectricactivecircuitsdoesnotincreasewhensomeoftheirresistorshavealargervalue.Thisbehavioriscausedbythedifferenttransferfunctionsforthesignalandtherespectivenoisesourcesassociatedwiththeseresistors.Moreover,thenewdesignedbioelectricamplifierhasanoutputnoiselessthanthatforconventionalamplifiers.Theobtainedanalysisresultswerealsoexperimentallyverifiedandthefinalconclusionsweredrawn.