简介:Aconsistentcheckpointingalgorithmwithshortfreezingtime(SFT)ispresentedinthispaper.Itsupportsfault-toleranceindistributedsystems,Thealgorithmhasshorterfreezingtime,loweroverhead,andsimplicityofrecovery.Tomakecheckpointtimeshorter,aspecialcontrolmessage(Munblock)isusedtoensurethataprocesscanrespondthecheckpointeventquicklyatanygiventime.Moreover,mainmemoryalgorithmisusedtoimprovetheconcurrencyofcheckpointing.ByusingSFT,thefreezingtimeresultedbycheckpointingislessthan0.03s.Furthermore,thecontrolmessagenumberofSFTisonlyO(n).
简介:Lawofthepropagationoferrorscausedbytheinconsistencyoftheboundaryscalesimilitudeinrivermodelexperimentispresentedinthispaper.Thefluctuationofscaletransfersalongthecharacteristicline,ifthedischargeandsedimentatentranceandthewaterlevelatthetailgatedrift.Thefluctuationofscalepropagateswiththederivedscalefunctionduetotopographicdeviation.Allerrorswillaccumulatetothefinalmeasureddata
简介:Aself-consistenthybridMonteCarloFluidmodelispresentedtodescribethenitrogendcglowdischarge.ThemovementoffastelectronsissimulatedbytheMonteCarlomethodwhilethedynamicsofslowelectronsandionsisbyfluidequations.Thespatialfeaturesofthechargedspeciesandthecorrespondingelectricfieldthroughoutthedischargehavebeencalculated,whichincludethecreationratesofionsandslowelectrons,densitiesofthechargedspecies,theelectricfieldandthepotentialdistribution.Thesecloselyrelatedresultscangiveaselfconsistentexplanationofthedischargecharacteristicsthroughoutthespaceofnitrogendcglowdischarge.Thecalculatediondensityisalsocomparedwiththecorrespondingexperimentalresult.
简介:Byusingthelogarithmicstrain,thefinitedeformationplastictheory,correspondingtotheinfinitesimalplastictheory,isestablishedsuccessively.Theplasticconsistentalgorithmwithfirstorderaccuracyforthefiniteelementmethod(FEM)isdeveloped.Numericalexamplesarepresentedtoillustratethevalidityofthetheoryandeffectivenessofthealgorithm.
简介:Wepresentintegral-typeDarbouxtransformationforthemKdVhierarchyandforthemKdVhierarchywithself-consistentsources.IncontrastwiththenormalDarbouxtransformation,theintegral-typeDarbouxtransformationscanoffernon-auto-Backlundtransformationbetweentwo(2n+1)-thmKdVequationswithself-consistentsourceswithdifferentdegrees.ThiskindofDarbouxtransformationenablesustoconstructtheN-solitonsolutionforthemKdVhierarchywithself-consistentsources.Wealsoproposetheformulasforthemtimesrepeatedintegral-typeDarbouxtransformationsforbothmKdVhierarchyandmKdVhierarchywithself-consistentsources.
简介:Anenergy-dissipationbasedviscoplasticconsistencymodelispresentedtodescribetheperformanceofconcreteunderdynamicloading.Thedevelopmentofplasticityisstartedwiththethermodynamichypothesesinorderthatthemodelmayhaveasoundtheoreticalbackground.Independenthardeningandsofteningandtheratedependenceofconcretearedescribedseparatelyfortensionandcompression.AmodifiedimplicitbackwardEulerintegrationschemeisadoptedforthenumericalcomputation.Staticanddynamicbehaviorofthematerialisillustratedwithcertainnumericalexamplesatmaterialpointlevelandstructurallevel,andcomparedwithexistingexperimentaldata.Resultsvalidatetheeffectivenessofthemodel.
简介:MainresultsTheorem1LetAbeann×nsymmetricpositivesemidefinitematrixandlet=+
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简介:Bilayermembranesself-assembledfromamphiphilicmoleculessuchaslipids,surfactants,andblockcopolymersareubiquitousinbiologicalandphysiochemicalsystems.Theshapeandstructureofbilayermembranesdependcruciallyontheirmechanicalpropertiessuchassurfacetension,bendingmoduli,andlinetension.Understandinghowthemolecularpropertiesoftheamphiphilesdeterminethestructureandmechanicsoftheself-assembledbilayersrequiresamolecularlydetailedtheoreticalframework.Theself-consistentfieldtheoryprovidessuchatheoreticalframework,whichiscapableofaccuratelypredictingthemechanicalparametersofself-assembledbilayermembranes.Inthisminireviewwesummarizetheformulationoftheself-consistentfieldtheory,asexemplifiedbyamodelsystemcomposedofflexibleamphiphilicchainsdissolvedinhydrophilicpolymericsolvents,anditsapplicationtothestudyofself-assembledbilayermembranes.
简介:Asteadyincreaseinconsumerdemands,andsevereconstraintsfrombothasomewhatdamagedenvironmentandnewlyinstalledgovernmentpolicies,requiretoday'sproductdesignanddevelopmenttobefasterandmoreefficientthaneverbefore,yetutilizingevenfewerresources.Newholisticapproaches,suchastotalproductlifecyclemodelingwhichembracesallaspectsofaproduct'slifecycle,arecurrentattemptstosolvetheseproblems.Withinthefieldofproductdesignandmodeling,featuretechnologyhasprovedtobeoneverypromisingsolutioncomponent.Owingtothetremendousincreaseininformationtechnology,totransferfromlowleveldataprocessingtowardsknowledgemodelingandinformationprocessingisabouttobringachangeinalmosteverycomputerizedapplication.Fromthisviewpoint,currentproblemsofbothfeatureframeworksandfeaturesystemsareanalyzedinrespecttostaticanddynamicconsistencybreakdowns.Theanalysisrangesfromearlystagesofdesigning(feature)conceptstofinalsystemimplementationandapplication.Forthefirsttime,anintegratedviewisgivenonapproaches,solutionsandpracticalexperience,withfeatureconceptsandstructures,providingbothafeatureframeworkanditsimplementationwithsufficientsystemarchitectureandcomputationalpowertomasterafairnumberofknownconsistencybreakdowns,whileprovidingforrobustcontextsforfeaturesemanticsandintegratedmodels.Withintoday'sheavyuseofinformationtechnologythesearepre-requisitesifthefullpotentialoffeaturetechnologyistobesuccessfullytranslatedintopractice.
简介:Self-assemblednanostructuresoflipidsandnanoparticlesholdgreatpromiseforapplicationsinsuchfieldsasnanomedicine.Thispaperusestheself-consistentfieldtheorytoinvestigatetheself-assemblybehavioroflipidmoleculesandnanoparticleswithdifferentshapesinanaqueoussolution.Itisfoundthatthelipidmoleculescanformmonolayeredandbilayerednanostructuresaroundthenanoparticleswithdifferentshapes(e.g.,triangular,square,hexagonalandoctangular).Withdecreasingthesizeofnanoparticlesorincreasingthenumberofpolygonedges,theshapeoflipidlayerswillapproachanapproximatelysphericalshape.Thesefindingsmayhelptopredictanddesignnoveldrugdeliverynanocarriers.
简介:Directsimulationof3-DMHD(magnetohydrodynamics)flowsinliquidmetalfusionblanketwithflowchannelinsert(FCI)hasbeenconducted.Twokindsofpressureequilibriumslot(PES)inFCI,whichareusedtobalancethepressuredifferencebetweentheinsideandoutsideofFCI,areconsideredwithaslotinHartmannwalloraslotinsidewall,respectively.ThevelocityandpressuredistributionofFCImadeofSiC/SiC_farenumericallystudiedtoillustratethe3-DMHDfloweffects,whichclearlyshowthatt...
简介:TheenergybanddiagramandchargedistributionoftheunintentionaldopedAIGaN/GaN/AIGaN/GaNdoubleheterostructurewereobtainedbyself-consistentPoissonSchroedingercalculations.Theseverebandtiltingandhightwo-dimensionalelectrongas(2DEG)densitymainlyattributetothelargeinternalpolarizationintensity,whichisc/osetoalinearfunctionorAlcomposition.TheinfluenceorAlcompositionisinvestigated.Theresultsshowthatbandtiltingenlargesand2DEGgainswithAIcomposition,andtwo-dimensionalholegasoccurswhenAIcompositionreachesacertainextent.TheinfluenceorAlcompositionandtwo-dimensionalholegas(2DHG)ondevicesisdiscussed.