简介：ThispaperextendstheSPHmethodtogassimulation.TheSPH(SmoothedParticlesHydrodynamics)methodisthemostpopularmethodofflowsimulation,whichiswidelyusedinlarge-scaleliquidsimulation.However,itisnotfoundtoapplytogassimulation,sincethosemethodsbasedonSPHcan’tbeusedinreal-timesimulationduetotheirenormousparticlesandhugecomputation.ThispaperproposesamethodforgassimulationbasedonSPHwithasmallnumberofparticles.Firstly,themethodcomputesthepositionanddensityofeachparticleineachpoint-in-time,andoutlinestheshapeofthesimulatedgasbasedonthoseparticles.Secondlythemethodusesthegridtechniquetorefinetheshapewiththediffusionofparticle’sdensityunderthecontrolofgrid,andgetmorelifelikesimulationresult.Eachgridwillbeassigneddensityaccordingtotheparticlesinit.Thedensitydeterminesthefinalappearanceofthegrid.Forensuringthenaturaltransitionofthecolorbetweenadjacentgrids,wegiveadiffuseprocessofdensitybetweenthesegridsandassignappropriatevaluestovertexesofthesegrids.Theexperimentalresultsshowthattheproposedmethodcangivebettergassimulationandmeettherequestofreal-time.

简介：Theuniaxialratchetingbehaviorofapolyetherimide(PEI)polymer'TECAPEI'wasstudiedusingstress-controlledcyclicloadingatroomtemperature,includingbothcyclictension-compressionwithnon-zerotensilemeanstressandtension-unloadingtests.Theexperimentalobservationswerefocusedonthetime-dependentratchetingofthePEIpolymerrevealedincyclictestsatdiversestressratesandwithdifferentpeakstressholdingtimes.TheresultsshowedthatthePEIpolymershowsobviousratchetingdeformation;i.e.,theratchetingstrainaccumulatesprogressivelyinthetensiledirectionduringstress-controlledcyclictestswithnon-zeromeanstress.Theratchetingishighlydependentontheappliedmeanstressandstressam-plitude,andisalsocharacterizedbyastrongtime-dependencyduringthecyclicstressingatdiversestressratesandwithdifferentpeakstressholdingtimes.Thetime-dependentratchetingofthePEIpolymeriscausedmainlybyitsremarkableviscosity.AcomparisonoftheratchetingoccurringbeforeandbeyondtheultimatestresspointofthePEIpolymershowedthattheratchetingbeyondtheultimatestresspointismoresignificantthanthatoccurringbeforethatpoint.

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简介：Cascadingfailuresoftenoccurincongestedcomplexnetworks.Cascadingfailurescanbeexpressedasathree-phaseprocess:generation,diffusion,anddissipationofcongestion.Differentfromthebetweennesscentrality,acongestionfunctionisproposedtorepresenttheextentofcongestiononagivennode.Inspiredbytherestartprocessofanode,weintroducetheconceptof'delaytime,'duringwhichtheoverloadednodecannotreceiveorforwardanytraffic,soanintergradationbetweenpermanentremovalandnonremovalisbuiltandtheflexibilityofthepresentedmodelisdemonstrated.Consideringtheconnectivityofanetworkbeforeandaftercascadingfailuresisnotcrackedbecausetheoverloadednodearenotremovedfromnetworkpermanentlyinourmodel,anewevaluationfunctionofnetworkefficiencyisalsoproposedtomeasurethedamagecausedbycascadingfailures.Finally,weinvestigatetheeffectsofnetworkstructureandsize,delaytime,processingability,andtrafficgenerationspeedoncongestionpropagation.Cascadingprocessescomposedofthreephasesandsomefactorsaffectingcascadepropagationareuncoveredaswell.

简介：在氧化的缺氧的硫化物(ASO)的最佳的操作条件生物反应器被调查。最大的移动为硫化物评价；硝酸盐被发现是4.18kg/(m[3]·d)；1.73kg/(m[3]·d)分别地。装载在固定底层集中整个减少的水力的保留时间(HRT)观察的率(LR)的volumetricalvolumetri比由在固定HRT增加底层集中的那些高。在ASO反应堆的硫化物氧化部分正在生产两硫酸盐；硫；但是生产的硫酸盐的数量是约三分之一硫的。这个过程能高容忍硫化物集中，当流入的集中直到580mg/L时，硫化物移动百分比总是在99%附近留下了。它容忍了因为当流入的集中在110mg/L上面被增加时，移动百分比落下到85%，相对降低硝酸盐集中。这个过程能容忍更短的HRT但是小心的操作被需要。自从当HRT从3.12h被减少到2.88h时，进程性能突然地败坏了，硝酸盐变换比硫化物变换对HRT更敏感。以便在反应堆避免亚硝酸根累积，流入的硫化物；硝酸盐集中应该在280mg/L被保留；67.5mg/L分别地。现在的生物工学为把硫化物从下水道移开是有用的；原油。

简介：　　69.See "China Enacts First National Regulation on Uninhabited Islands,　　96.The China White Paper （Stanford,　　72.The term "effectively responded"is a Chinese euphemismindicating thatthe Chinese did

简介：OnJuly23,adam-breakoccurredtotheAuxiliaryDamofXePian-XeNamnoyHydropowerStationlocatedinSouthernLaos,and5billioncubicmetersofwaterflowedoutinafewhours,whichhascausedthemostseriousfloodofthepasttenyearsinLaosandincurredthelossofmanylives.

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简介：LetLBbethelastexittimefromacompactsetBofanellipticdiffusionprocessX.AmoderateestimateforthedistributionofLBisobtained,andthesufficientandnecessaryconditionforEx(LBk)<∞isproved.

简介：它在夏被显示出[3]为有连续assets'price过程的不完全的市场并且为完全的市场，吝啬变化的公事包选择能是被看，这与非否定的边缘的用途期望用途最大化。在这篇论文，我们在分离时间显示出那这结果不是的不完全的市场真。

简介：TosolvethenumericaldivergenceproblemofthedirecttimedomainGreenfunctionmethodforthemotionsimulationoffloatingbodieswithlargeflare,atimedomainhybridRankine-Greenboundaryelementmethodisproposed.Inthisnumericalmethod,thefluiddomainisdecomposedbyanimaginarycontrolsurface,atwhichthecontinuousconditionshouldbesatisfied.ThentheRankineGreenfunctionisadoptedintheinnerdomain.ThetransientfreesurfaceGreenfunctionisappliedintheouterdomain,whichisusedtofindtherelationshipbetweenthevelocitypotentialanditsnormalderivativefortheinnerdomain.Besides,thevelocitypotentialatthemeanfreesurfacebetweenbodysurfaceandcontrolsurfaceisdirectlysolvedbytheintegrationscheme.Thewaveexcitingforceiscomputedthroughtheconvolutionintegrationwithwaveelevation,byintroducingtheimpulseresponsefunction.Additionally,thenonlinearFroude-Krylovforceandhydrostaticforce,whichiscomputedundertheinstantaneousincidentwavefreesurface,aretakenintoaccountbythedirectpressureintegrationscheme.Thecorrespondingnumericalcomputercodeisdevelopedandfirstusedtocomputethehydrodynamiccoefficientsofthehemisphere,aswellasthetimehistoryofashipwithlargeflare;goodagreementisobtainedwiththeanalyticalsolutionsaswellastheavailablenumericalresults.ThenthehydrodynamicpropertiesofaFPSOarestudied.Thehydrodynamiccoefficientsagreewellwiththeresultscomputedbythefrequencymethod;theinfluenceofthetimeintervalandthetruncatedtimeisinvestigatedindetail.

简介：Basedondynamicrupturesimulationsonaplanarfaultinahomogeneoushalf-space,weinvestigatedthenucleationprocessesusingthetime-weakeningfrictionlaw.Boththecharacteristictimeandtherupturespeedinthenucleationasperityplayanimportantroleindeterminingrupturebehaviorsonafaultplanefollowingthetime-weakeningfrictionlaw,withwhichrupturestartsfromasinglepointinthenucleationasperityandpropagatesatagivenspeedtowardtheboundaryofthenucleationarea.Rupturewithasmallcharacteristictimeoralargerupturespeedinthenucleationasperitypropagatesearlierfromthehypocenter.Rupturefollowingtheslipweakeningfrictionlawrequiresasmallerradiusofnucleationpatchtohavesimilarrupturefrontcontoursofthetime-weakeningfrictionlaw.Eveniftherupturevelocityinthenucleationpatchofthetime-weakeningfrictionlawincreasestoinfinity,thepeaksliprateinthenucleationasperityissmallerthanthatoftheslip-weakeninglaw.Thepeakgroundvelocitydistributionsofrupturesfollowingthetwofrictionlawsarealsocompared.

简介：Inthecurrenteraofcardiovasculardisease,thediagnosisofheartfailurewithpreservedejectionfraction(HFpEF)isawell-recognizedclinicalentitythatisequallyprevalentbutdistinctlydifferentfromheartfailurewithreducedejectionfraction(HFrEF).DespitenormalEFpatientswiththisdiseasehavesimilarmorbidityandmortalityratescomparedwithHFrEF,aswellasarisingrateofhospitalizations.ThepathophysiologyofHFpEFisincompletelyunderstood.Thenumberoftherapieswithprovenefficacyatimprovinglongtermcardiovascularoutcomesislimited.Womenwithheartfailuresyndromes,particularlytheelderly,aremuchmorelikelytohaveaHFpEFphenotypeatthetimeoftheirdiagnosis.Thepurposeofthispaperistoreviewtheepidemiology,pathophysiology,clinicalfeatures,andcurrentmanagementstrategiesinHFpEF,especiallyasitpertainstowomen.

简介：ThebrieftheoriesofwaveletanalysisandHilbert-Huangtransform(HHT)areintroducedfirstlyinthepresentpaper.ThenseveralsignaldatawereanalyzedbyusingwaveletandHHTmethods,respectively.ThecomparisonshowsthatHHTisnotonlyaneffectivemethodforanalyzingnon-stationarydata,butalsoisausefultoolforexaminingdetailedcharactersoftimehistorysignal.

简介：Accuratedeterminationofflushingtimeiscrucialformaintainingsustainableproductioninfishculturezones(FCZs),asitrepresentsthephysicalself-purificationcapabilityviatidalexchangewithcleanwaterintheoutersea.However,owingtothetemporalandspatialcomplexityofthecoastalflushingprocess,existingmethodsfordeterminingflushingtimemaynotbegenerallyapplicable.Inthispaper,asystematicmethodfordeterminingtheflushingtimeinFCZsispresented,inwhichbathymetry,runoff,tidalrangeandstratificationareproperlyaccountedfor.Wedeterminetheflushingtimevianumericaltracerexperiments,usingrobust3Dhydrodynamicandmasstransportmodels.ForFCZslocatedinshelteredandland-lockedtidalinlets,thesystemboundarycanbenaturallydefinedattheconnectionwiththeopensea.ForFCZslocatedinopenwaters,hydrodynamictrackingisfirstusedtoassesstheextentoftidalexcursionandthusdelimittheinitialboundarybetweencleanwaterandpollutedwater.ThisgeneralmethodisappliedtoalldesignatedmarineFCZsinHongKongforboththedryandwetseasons,including20shelteredFCZs(insemi-enclosedwatersofToloHarbour,MirsBay,andPortShelter)and6FCZsinopenwaters.OurresultsshowthatflushingtimeisthelongestininnerPortShelter(about40daysindryseason),andtheshortestfortheFCZsinopenwaters(lessthanoneweekindryseason).Inaddition,theflushingtimeindryseasoniscommonlylongerthanthatinwetseason:20%~40%formostwell-shelteredFCZs;2.6~4timesfortheothers.Ourresultsindicateapositivecorrelationbetweentheflushingtimeanddistancetoopenboundary,supportingtheviewthattheflushingtimeofaFCZiscloselyrelatedtoitslocation.ThisstudyprovidesasolidbasisformariculturemanagementsuchasthedeterminationofcarryingcapacityofFCZs.

简介：BasedonGreen’stheorem,atimedomainnumericalmodelwasconstructedtosimulatewavemakingphenomenoncausedbyamovingship.Inthisarticle,theRankinesourcesanddipoleswereplacedonboundarysurfaces(i.e.,theshipsurfaceandfreesurface),andatime-steppingschemewasemployed.Itsuniquecharacteristicisthatsteadystatecanberealizedfrominitialvaluebyemployingthetime-steppingschemeandunsteadyfreesurfaceconditions.Intimedomain,iftheresultsofunsteadyflowproblemtendtodatastabilizationaftermanytimestepsofcomputation,theycouldberegardedasthedataofsteadyones.Thismodelcouldbeemployedtosteadyorunsteadyproblems.Theoreticalreasoningandcomputationalprocessofthismethodwasdescribedindetail.Thelinearandnonlinearboundaryconditionsonbodysurfacewerestudied,andtherelativemeanstorealizetheseboundaryconditionsiniterativecomputationwerealsodiscussed.SomeproperparametersaboutthemodeloftheWigleyhullweredeterminedbymanynumericaltests,andtheirinfluencesonwavemakingresistanceandwavepatternwerediscussed.Accordingtothecomparisonbetweennumericalresultsanddataavailableinrelativereferences,themethodusedinthisworkisproventobeareliablemethodintimedomain.Andthelatticereorganizationineverytimestepcomputationisafeasiblenumericalapproach.

简介：这份报纸由在矩阵的半张肌产品的框架下面使用图论的方法在一个温和假设下面处于状态与时间变体延期为布尔控制网络(BCN)的observability给一个相等的条件。首先，在考虑下面的BCN被分成没有时间延期的分系统的一个有限数字。第二，BCN的observability被测试所谓的observability的observability验证构造路径(没有时间延期的一个特殊分系统)基于图理论。这些结果在BCN的observability上扩大最近的相关结果。例子被显示说明结果的有效性。

简介：　　There may not be a way to bridge the gap between China's demands that Americanmilitary and non-commercial government vessels first gain Chinese authorizationto conduct maritime surveillance in waters within 200nm of Chinese landfall underArticles 246and 248of the UNCLOS and the U.S.demands for "freedom of access"on the high seas.75But given the Chinese government's extensive territorial claimsin the South China sea,Chinese forces have harassed these U.S.craft.In late1994,Beijing's Zhongguo Qingnian Bao（China Youth News）reportedthat China's Maritime Patrol Service had "effectively responded"72against incursionsinto Chinese "territorial seas"by American and Japanese ships and aircraft andspecifically charged the USNS Bowditch and USNS Sumner with engaging in unauthorizedmilitary mapping activities.

简介：Theconventionaldatawarehousecanonlyanalyzehistoricaldata.Thispaperproposesaconceptofagent-basedreal-timedatawarehouseinBIsystem,Withthismodelwecanimprovethereal-timeperformanceofdatawarehouse.Ontheotherhand,theBIsystemflexibilityisenhancedinthismodel,whichmakesitmuchmoreefficienttomanagethedistributedenvironment.