简介:§1.IntroductionItisveryimportanttostudythetheoryofthemultidimensionalhyperbolicconservationlaws.Atypicalmodelisthefollowinginitialvalueproblem
简介:Inversetechniqueisawidelyusedmethodinoceanography,butithasaproblemthattheretrievedsolutionsoftenviolatemodelpriorassumptions.Totunethemodelhasconsistentsolutions,aniterationapproach,whichsuccessivelyutilizestheposteriorstatisticsfornextroundinverseestimation,isintroducedandtestedfromarealcasestudy.Itisfoundthattheconsistencymaybecomeelusiveasthedeterminantsofsolutionandnoisecovariancematricesbecomezerointheiterationprocess.However,afterseveralstepsofsuchoperation,thedifferencebetweenposteriorstatisticsandthemodelprioronescanbegraduallyreduced.
简介:Inthispaper,twoapproachesareusedtosolvethePerspectiveThree-PointProblem(P3P):thesymboliccomputationapproachandthegeometricapproach.Inthesymboliccomputationapproach,weuseWu-Ritt'szerodecompositionalgorithmtogiveacompletetriangulardecompositionfortheP3Pequationsystem.ThisdecompositionprovidesthefirstcompleteanalyticalsolutiontotheP3Pproblem.Inthegeometricapproach,wegivesomepuregeometriccriteriaforthenumberofrealphysicalsolutions.Thecompletesolutionclassificationfortwospecialcaseswiththreeandfourparametersisalsogiven.
简介:Inthispaper,acomputationallyeffectivealgorithmbasedontabusearchforsolvingthesatisfiabilityproblem(TSSAT)isproposed.Somenovelandefficientheuristicstrategiesforgeneratingcandidateneighborhoodofthecurredassignmentandselectingvaribablestobeflippedarepresented.Especially,theaspirationcriterionandtabulisttructureofTSSATaredifferentfromthoseoftraditionaltabusearch.Computationalexperimentsonaclassofprobleminsteancesshowthat,TSSAT,inareasonableamountofcomputertime,yieldsbetterresultsthanNoveltywhichiscurrentlyamongthefastestknown.ThereforeTSSATisfeasibleandeffective.
简介:Acouplingmethodoffiniteelementandinfinitelargeelementisproposedforthenumericalsolutionofaneigenvalueprobleminunboundeddomainsinthispaper.Withsomeconditionssatisfied,theconsideredproblemisprovedtohavediscretespectra.Severalnumericalexperimentsarepresented.Theresultsdemonstratethefeasibilityoftheproposedmethod.
简介:REGULARITYOFTHEFREEBOUNDARYINELECTROCHEMICALMACHININGPROBLEMYuanGuangwei(InstituteofAppliedPhysicsandComputationalMathematics...
简介:WeconductedtheresearchonthecalculationoftheJordannormalformofamatrixfrom1993to1998.Inthisperiod,weobtainedsometheoreticalresults,alsodevelopedandimplementedaseriesofalgorithmsforthetheoreticalresults.Nowthisresearchiscompletedtosomedegree.TheGolub-Wilkinson’sProblemComputingtheJordandecompositionofamatrix,introducedbyG.H.GolubandJ.
简介:Inthispaper,anewcollocationBEMfortheRobinboundaryvalueproblemoftheconductivityequation▽(γ▽u)=0isdiscussed,wheretheγisapiecewiseconstantfunction.Bytheintegralrepresentationformulaofthesolutionoftheconductivityequationontheboundaryandinterface,theboundaryintegralequationsareobtained.Wediscussthepropertiesoftheseintegralequationsandproposeacollocationmethodforsolvingtheseboundaryintegralequations.Boththetheoreticalanalysisandtheerroranalysisarepresentedandanumericalexampleisgiven.
简介:§1.IntroductionLetEbeanon-zerocomplexBanaohspace,&(JET)theBanaohalgebraofalltheoperatorsfromEintoitself.Operatormeans'boundedlinearoperator'throughout.Anoperatorfunction/fromadomain(openset)Dinthecomplexplaneto@l(T£}issaidtobeanalytic,ifforanyx^Eandq>£E*(thedualspaceofE\9>(/(z)aOisanalyticintheclassical’senseinD([1],p.92).Wedenotebyja/B(D)thesetofalltheanalyticoperatorfunctionsfromDinto
简介:Thefluorineionsensitivefield-effecttransistor(F--ISFET)ismadebydepositingverythinLaF3filmongridoffield-effecttransistorwithsputtermethod.Theoperatingprinciple,measuringmethodandmeasuredresultsofF--ISFETaregiven.Themeasuredresultsshowthatthiskindofsensorhashighersensitivity,shorterresponsetimeandbetterlinearity.Onthebasisofexperimentalresults,thefactorofinfluencingthesteadinessandrepeatabilityofF--ISFETareconjectured.