简介：Inthispaper,wepresentthemodelofthresholdschemeswithweightsasanaturalgeneralizationofShamir'sthresholdschemeandshowhowtoapplythemodeltoconstructsecretsharingschemesbytwoexamples.

简介：In2005,Bao,etal.[Appl.Math.andComput.,vol.169,No.2,2005]showedthatTzeng,etal.’snonrepudiablethresholdmulti-proxymulti-signatureschemewithsharedverificationwasinsecure,andproposedanimprovedschemewithnoShareDistributionCenter(SDC).ThispapershowsthatBao,etal.’sschemesuffersfromtheproxyrelationshipinversionattackandforgeryattack,andpro-posesanimprovementofBao,etal.’sscheme.

简介：Beingoneofthemarketsmoststimulatingtoinvestors,theChinesepowermarkethasalreadyshownitsinvestmentopportunitiesthatnoinvestorcanignore.Butpresently,whetherexperiencedpowerenterprisesinmarketparticipationorgreenhandspreparedforrushingintothemarket,theywilldiscoverthatevenunderderegulationcondition,therearestillmanyinevitableandunsolvablenonmarketproblemsexistinginpowerinvestment.

简介：Thispaperproposesacircularthresholdquantumsecretsharing(TQSS)schemewithpolarizedsinglephotons.Apolarizedsinglephotonsequencerunscircularlyamonganytormoreofnpartiesandanytormoreofnpartiescanreconstructthesecretkeywhentheycollaborate.Itshowsthatentanglementisnotnecessaryforquantumsecretsharing.Moreover,thetheoreticefficiencyisimprovedtoapproach100%asthesinglephotonscarryingthesecretkeyaredeterministicallyforwardedamonganytormoreofnparties,andeachphotoncancarryonebitofinformationwithoutquantumstorage.Thisprotocolisfeasiblewithcurrenttechnology.

简介：

简介：Experimentaldata,obtainedfrompreviousstudies,onCriticalTractiveStress(CTS)ofnon-uniformsediments,havebeenusedtoverifytheadequacyofexistingrelationshipsforCTSofnon-uniformbimodalsediments.Keepinginviewtheperformanceofsuchrelationships,anewrelationshipforcomputationofdimensionlessCTSofindividualsizefractionofnon-uniformunimodalandbimodalsedimentshasbeenproposedintheformofpowerlaw.Thecoefficientandexponentoftheproposedpowerlawhavebeenempiricallycorrelatedwithsedimentcharacteristicsforavailablesedimentdata.Theproposedrelationshiphasbeenvalidatedwithindependentflumeandfielddatatoassesstheirapplicabilityforunimodalandbimodalsediments.

简介：

简介：Experimentalandnumericalstudieshaveshownsimilaritiesbetweenlocalizedturbulenceinchannelandpipeflows.Byscalinganalysisofadisturbed-flowmodel,thispaperproposesalocalReynoldsnumberReMtocharacterizethethresholdoftransitiontriggeredbyfinite-amplitudedisturbances.TheReMrepresentsthemaximumcontributionofthebasicflowtothemomentumratiobetweenthenonlinearconvectionandtheviscousdiffusion.ThelowercriticalReMobservedinexperimentsofplanePoiseuilleflow...

简介：Landbreezeisatypeofmesoscalecirculationdevelopedduetothermalforcingoveraheterogeneouslandscape.Itcancontributetoatmosphericdynamicandhydrologicprocessesthroughaffectingheatandwaterfluxesontheland-atmosphereinterfaceandgeneratingshallowconvectiveprecipitation.Ifthescaleofthelandscapeheterogeneityissmallerthanacertainsize,however,theresultinglandbreezebecomesweakandbecomesmixedupwithotherthermalconvectionslikethermals.Thisstudyseekstoidentifyascalethresholdtodistinguishtheeffectsbetweenlandbreezeandthermals.Two-dimensionalsimulationswereperformedwiththeRegionalAtmosphericModelingSystem(RAMS)tosimulatethermalsandlandbreeze.Theirhorizontalscalefeatureswereanalyzedusingthewavelettransform.Thethermalsdevelopedoverahomogeneouslandscapeunderdryorwetconditionshaveaninitialscaleof2-5kmduringtheirearlystageofdevelopment.Thescalejumpsto10-15kmwhencondensationoccurs.Thesolutionofananalyticalmodelindicatesthatthereduceddegreeofatmosphericinstabilityduetothereleaseofcondensationpotentialheatcouldbeoneofthecontributingfactorsfortheincreaseinscale.Thelandbreeze,ontheotherhand,hasamajorscaleidenticaltothesizeofthelandscapeheterogeneitythroughoutvariousstagesofdevelopment.Theresultssuggestthattheeffectsoflandbreezecanbeclearlydistinguishedfromthoseofthermalsonlyifthesizeofthelandscapeheterogeneityislargerthanthescalethresholdofabout5kmfordryatmosphericprocessesorabout15kmformoistones.

简介：

简介：Athresholdsettingschemeisproposedbasedontheresourcemanagementandlimitedfeedbacktheoryinmultiuserorthogonalfrequencydivisionmultiplexing(OFDM)systems.Inadaptiveresourceallocation,thefactorsdenotingthequalityofservice(QoS)andfairnessarebothconsideredastheuserweight.Fromtheaspectoffeedbackoutageprobability,theproposedalgorithmsetsthethresholdforeachuserrelatedtoitsweight,whichbringsenoughfeedbacktotheuserwithgreaterweight.Analysisandsimulationresultsshowthat,comparedwiththethresholdignoringweights,theproposedschemehasmuchlowerfeedbackloadwhilewithbetterQoS.

简介：

简介：阀值签名起一个重要作用在现代电子社会散布一个单个权威的力量。以便增加功能并且改进阀值签名的效率，有签署当局区分的一个多政策阀值签名计划被建议。在计划，二个组能签名并且验证对方，因此计划是双向的签名并且验证。而且，二个组的阀值价值能随着签名文件的安全分类变化，每个自由签署者仅仅签署这个文件的小部分而不是整个的，为组签名建设的数据传播的带宽能因此被减少，组签名的尺寸等价于任何单个签名的。

简介：Digitalcircuitsoperatinginthesub-thresholdregimeconsumetheleastenergy.Thestrictenergyconstraintsaredesiredintheapplicationswhichworkatthelowestpossiblesupplyvoltage.Ontheotherhand,theconventionaldesignflowutilizesthetechnologylibraryprovidedbythefoundrywithafixedvoltageboundary,whichcausesproblemswhenthesupplyscalesdowntothesub-thresholdregime.Inthispaper,wepresentadesignmethodologytocharacterizetheexistingcelllibrarywithLibertyNCXtofacilitatethestandarddesignflow.Itisdemonstratedin0.13mcomplementarymetal-oxide-semiconductor(CMOS)technologywiththesupplyvoltageof300mV.

简介：Thispaperconsidersaclassofdelayedrenewalriskprocesseswithathresholddividendstrategy.ThemainresultisanexpressionoftheGerber-ShiuexpecteddiscountedpenaltyfunctioninthedelayedrenewalriskmodelintermsofthecorrespondingGerber-Shiufunctionintheordinaryrenewalmodel.Subsequently,thisrelationshipisconsideredinmoredetailinboththestationaryrenewalriskmodelandtheruinprobability.

简介：Bridgepressureflowscouratclearwaterthresholdconditionisstudiedtheoreticallyandexperimentally.Theflumeexperimentsrevealthatthemeasuredscourprofilesunderabridgearemoreorless2-dimensional;allthemeasuredscourprofilescanbedescribedbytwosimilarityequations,wherethehorizontaldistanceisscaledbythedeckwidthwhilethelocalscourbythemaximumscourdepth;themaximumscourpositionislocatedjustunderthebridgeabout15%deckwidthfromthedownstreamdeckedge;thescourbeginsataboutonedeckwidthupstreamthebridgewhilethedepositionoccursatabout2.5deckwidthsdownstreamthebridge;andthemaximumscourdepthdecreaseswithincreas-ingsedimentsize,butincreaseswithdeckinundation.Thetheoreticalanalysisshowsthat:bridgescourcanbedividedintothreecases,i.e.downstreamunsubmerged,partiallysubmerged,andtotallysubmerged.Fordownstreamunsubmergedflows,themaximumbridgescourdepthisanopen-channelproblemwheretheconventionalmethodsintermsofcriticalvelocityorbedshearstresscanbeapplied;forpartiallyandtotallysubmergedflows,theequilibriummaximumscourdepthcanbedescribedbyascourandaninundationsimilaritynumber,whichhasbeenconfirmedbyexperimentswithtwodecksandtwosedimentsizes.Forapplication,adesignandfieldevaluationprocedurewithexamplesispresented,includingthemaximumscourdepthandscourprofile.

简介：Inthispaper,basedonastochasticmode!forinputsandweights,andinviewofthedisturbanceofcorrelativeandlargeinputandweighterrors,ageneralalgorithmtoobtaintheoutputerrorcharacteristicsofaclassofmultilayeredperceptronswiththresholdfunctionsisproposedbyusingstatisticalapproach.Furthermore,theformulatocalculatetherobustnessofthenetworksisalsogiven.Theresultofcomputersimulationindicatesthecorrectnessofthealgorithm.

简介：

简介：Ageneralizedmathematicalmodelofhumanbodycurrentthresholdforperceptionwasestablishedandthecurrentflowingthroughhumanbodycouldbearbitrarycyclicalwaveforms.Therelationshipbetweenhumanbodycurrentthresholdforperceptionandcurrentfrequency,truerootmeansquare(RMS)valueandinfluencefactorwasdescribed.Atestsystemwasestablishedbasedonelectroencephalogram(EEG)tostudytherelationshipbetweenhumanbodycurrentthresholdforperceptionandcurrentwaveform,frequency...

简介：Fordirectsequencespreadspectrum(DSSS)receivers,thecapabilityofrejectingnarrow-bandinterferencecanbesignificantlyimprovedbyaprocessoffrequency-domaininterferencesuppression(FDIS).Thekeyissueofthisprocessishowtodetermineathresholdtoeliminateinterferenceinthefrequencydomain,whichhasbeenextensivelystudied.However,thesepreviousmethodsaretediousorverycomplex.Asimpleandefficientalgorithmbasedonmediansisproposed.Theeliminationthresholdisonlyrelatedtothemedianbyascalefactor,whichcanbeobtainedbythenumericalanalysis.Simulationresultsshowthatthealgorithmprovidesexcellentnarrow-bandinterferencesuppressionwhileonlyslightlydegradingthesignal-to-noiseratio(SNR).Aone-passalgorithmusinglogarithmicsegmentationisfurtherderivedtoestimatemedianswithlowcomputationalcomplexity.Finally,theFDISisimplementedinafieldprogrammablegatearray(FPGA)ofXilinx.ExperimentsarecarriedoutbyconnectingtheFDISFPGAtoaDSSSreceiver,andtheresultsshowthatthereceiverhasaneffectivecountermeasurefora60dBinterference-to-signalratio(ISR).