简介:ThispaperanalysestheUncertaintyofExpressing,whichthereshouldbewhenpeopleexpressthemselves,describethetruthintheirminds,andoffertheirconclusionsaboutsomematters.TheUncertaintyofExpressing,onesortoflanguagephenomenon,consistsinthechoiceofwordsandthemoodofspeaking.Theintentofthispaperistohelpbetterunderstanding.
简介:大多数geospatial现象能被解释概率的联盟者因为我们不知道生物物理的过程和机制,那联合创造了并且观察事件。因为我们关于在在取样的地点的学习下面的现象肯定,这哲学是重要的,除了测量错误,,但是,在之间取样,我们关于现象怎么表现变得不明确。Geostatistical不确定性描述是以如此的一个方法产生随机数,他们模仿创造了存在样品数据的随机过程的结果。存在样品的这个集合被看作那个随机的功能模型的一条部分取样的认识。随机的功能的空间可变性被一张变量图或协变性模型描述。在他们的地点奖励样品数据,并且反映空间结构的认识到的表面需要由变量图模型确定了。他们应该各复制整个采样区域的样品直方图代表。这篇论文将由盖住univariate和指示物技术在随机的模拟考察基础希望他们在geospatial信息科学的应用将普遍、多产。
简介:Globalwarminghasgreatlyconcernedthewholeworld.Owingtothelimitationwecurrentlyhave,itisstilldifficulttocompletelyunderstandthemechanismandphysicalscienceofclimatechange.Nowbothcertaintyanduncertaintycoexistintheunderstandingofclimatewarming.Thispaperaimstosummarizecertaintiesanduncertaintiesinclimate-warmingstudies,whichfocusonsevenkeyproblemsrelatedtohumanactivities,namely,globalwarming,atmosphericconcentrationsofgreenhousegases,relationshipbetweengreenhousegasemissionsandclimatewarming,climatemodels,futureclimatechange,2?warmingthresholdandtippingpointintheEarth’ssystem.Weshouldcomprehensivelytakeintoaccountthelevelofcertaintyanduncertaintyinourunderstandingofclimatechangewhileadaptingtoandmitigatingglobalwarmingandadjustingourindustrialstructuresaccordingly.Thiswouldallowustorespondtochangewithcertainty,whileavoidingtherisksassociatedwithuncertainty.
简介:ItisanewresearchtopictocreatearationaljudgmentmatrixusingthecognitiontheorybecauseoftheconstructionofjudgmentmatrixinAHPinvolvingthedecision-maker'scognitiveactivities.Owingtothepresenceofuncertaininformationinthedecisionprocedure,theimproperuseoftheuncertaininformationwilldoubtlesscauseweightchanges.Inthispaper,weaddafeedforwardprocesspriortoconstructingthejudgmentmatrixsothatthedecisionmakercanuseboththecertainanduncertaininformationtogettheinitialuncertainroughjudgmentmatrix,andthenconvertitintoafuzzymatrix.Consequently,itwillbebetterfordecisionmakertoobtaintheroughsetoforderequivalentclassesthroughthedecisiongraph.Accordingtothequalitativeanalysis,thedecisionmakercaneasilyconstructthefinaljudgmentmatrixinstructedbytheroughsetcreatedearlier.
简介:Mostenvironmentalissuesandpolicydesigningareuncertainandirreversible;therefore,thetimingofenvironmentalpolicyimplementationbecomesespeciallyimportant.Thispaperestablishesarandomdynamicprogrammingmodelandanalyzestheoptimaltimingproblemsinenvironmentalpolicyunderuncertainvariables.Thismodelresultsindicatethattwovariableshaveasignificantimpactonthetimingofenvironmentalpolicyimplementationandtheyworkinoppositedirecfons:ononehand,themoreuncertaintheeconomyis,thehigherthecostofpoliciesimplementationwillbe,andconsequentlytheincentivetoimmediatelyadoptthepolicywillbestronger.Ontheotherhand,thehighertheuncertaintyoftheenvironmentis,thestrongertheirreversibilityofecologicalharmcausedbypollutantsperunitwillbe.Therefore,thegovernmentshouldimplementnewenvironmentalpoliciesasearlyaspossibleinordertogainmoreecologicalbenefits.
简介:LetM(2)bethegroupofrigidmotionsoftheplane.TheFouriertransformandthePiancherelformulaonM(2)canbeexplicitlygivenbythegeneralgrouprepresentationtheory.Usingthisfact.weestablishakindofuncertaintyprincipleonM(2).Theresultcaneasilybegeneralizedtohigherdimensionalcases.AnapplicationoftheresultyieldsanuncertaintyprincipleontheEuclideanspacesobtainedbyR.S.Strichartz.
简介:Thispaperinvestigatesthedifferencesthatresultfromapplyingdifferentapproachestouncertaintymodelingandreportsanexperimentalexaminingerrorestimationandpropagationinelevationandslope,withthelatterderivedfromtheformer.Itisconfirmedthatsignificantdifferencesexistbetweenuncertaintydescriptors,andpropagationofuncertaintytoendproductsisimmenselyaffectedbythespecificationofsourceuncertainty.
简介:Thepurposeofthispaperistodiscusshowthevalueofhigh-techfirmcanberationallyvaluedbytakingintoaccountmanagerialflexibilitywhenitsfuturerevenueisuncertain,therebythefirm'smanagercanmakerationalinvestmentdecisionS.Usingstochasticcontroltheory,thepaperwillpresentthatthefirm'svaluesatisfiesapartiallydifferentiateequation,andanalyzethemanagerialflexibilityvaluewithinaframeworkofreal-optionanalytictheorey.Finally,thecomparativestaticanalysisandthemodel'ssimpleapplicationaregiven.
简介:Corporationsneedtoimprovebusinessprocessesinordertoenhancevelocityandservicelevelswhilereducingtheirprocessingcostsanddifferentiatingthemselvesinthefaceofcompetition.ThelevitationofimportancebeyondsupportroleshasraisedITinvestmentdecisionstohighpriorityinchiefexecutiveofficers′agendas.CorporateplanninggroupsaswellaslinesofbusinessareincreasinglyapplyingtechniquesofITapplicationsportfoliomanagementinamoresystematicfashiontoimprovedecision-maltingandresource-allocationprocesses.RecentadvancesinsoftwareengineeringandITservicedeliverymethodologieshaveachievedthelogicalseparationofbusinessfunctionsfromimplementation.ThisseparationhasmadeanewbreedofinnovativeITprojectpossiblewithanewprojectriskstructure;theadjustmentofportfoliomanagementtechniquesisappropriate.Wepresentanintegratedportfoliomanagementmodelsothatthecorporationcanfocusonorganicgrowththroughsourcesatboththedepartmentandtopmanagementlevels.Theresearchgivesclearadviceastohowtopmanagementcanseekeconomicgrowthbyselectinganentrepreneurialstrategicposture,implyingastrongrisk-takingpropensity.Byintegratingarisk-returnmodelandrisk-toleranceparadigmtocopewithtoday′sriskstructure,overallcapabilitiescanimprovethedecisionprocessandthecorporation'sperformanceaswell.TheapplicationoftheintegratedtechniquetoaJapanesemanufacturingfinnisdescribed.
简介:ThisarticleinvestigatestransmitterdesigninRayleighfadingmultipleinputmultipleoutput(MIMO)channelswithspatialcorrelationwhentherearechanneluncertaintiescausedbyacombinedeffectofchannelestimationerrorandlimitedfeedback.Toovercomethehighcomputationalcomplexityoftheoptimaltransmitpowerallocation,asimpleandsuboptimalallocationisproposedbyexploitingthetransmissionconstraintanddifferentiatingaboundbasedonJenseninequalityonthechannelcapacity.Thesimulationresultsshowthatthemutualinformationcorrespondingtotheproposedpowerallocationcloselyapproachesthechannelcapacitycorrespondingtotheoptimaloneandmeanwhilethecomputationalcomplexityisgreatlyreduced.
简介:Resourcessharedine-Sciencehavecriticalrequirementsonsecurity.Thussubjectivetrustmanagementisessentialtoguaranteeusers'collaborationsandcommunicationsonsuchapromisinginfrastructure.Asanimportantnatureofsubjectivetrust,uncertaintyshouldbepreservedandexhibitedintrustdefinition,representationandevolution.Considerthedrawbacksofexistingmechanismsbasedonrandommathematicsandfuzzytheory,thispaperdesignsanuncertaintyenhancedtrustevolutionstrategybasedoncloudmodeltheory.Wedefinesubjectivetrustastrustcloud.Thenweproposenewalgorithmstopropagate,aggregateandupdatetrust.Furthermore,basedontheconceptofsimilarcloud,amethodtoassesstrustlevelisputforward.Thesimulationresultsshowtheeffiectiveness,rationalityandefficiencyofourproposedstrategy.
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