简介：-Basedonfieldwavedata,anempiricalformulaofwaveenvelopespectrumisgiveninthispaper.Thenthemethodsofbothnumericalandphysicalsimulationofseawavegroupswiththegivenspectrumandgroupinessparametersaresuggested.

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简介：TherealDirectionOfArrival(DOA)varieswithtimeinmobilecommunicationsystem.Insuchsituation,theperformanceofconventionalbeamformerswillbedegradedobviously.QuantumSignalProcessing(QSP)beamformerisinsensitivetoDOAerrors,thusitcanachievestableoutputperformanceinsuchcircumstance.ThisletterverifiedtheeffectivenessandfeasibilityoftheQSPbeamformerbysimulationresults.

简介：Thearcsprayingprocessisdividedintotwostages:thefirststageisatomization-sprayingstream(ASS)andthesecondoneissprayingdeposition(SD).Thenstudystatusisdescribedofbothstages'physicalmodelandcorrespondingcontrolling-equation.Basedontheanalysisofstudystatus,theconclusionasfollowsisgot.TheheatandmasstransfermodelswithtwoorthreedimensionsinASSstageshouldbeestablishedtofardeeplyanalysesthedynamicalandthermalbehavioroftheoverheatdroplet.Thestatisticslawofoverheateddropletsshouldbefurtherstudiedbyconnectingsimulationwithexperiments.MorepropervalidationexperimentsshouldbedesignedforflatteningsimulationtomodifythemodelsinSDstage.

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简介：Object-oriented(OO)approachisthekeytechnologytodevelopasoftwaresystemintheLHC/ATLASexperiment.WedevelopedaOOsimulationframeworkbasedontheGeant4general-purposesimulationtoolkit.BecauseofcomplexityofsimulationinATLAS,wepayedmostattentiontothescalabilityinitsdesign.AlthoughthefirsttargettoapplythisframeworkistoimplementtheATLASfulldetectorsimulationprogram,thereisnoexperiment-specificcodeinit,thereforeitcanbeutilizedforthedevelopmentofanysimulationpackage,notonlyforHEPexperimentsbutalsoforvariousdifferentresearchdomains,Inthispaperwediscussourapproachofdesignandimplementationoftheframework.

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简介：Asasubstitutefortheoriginaldisplacedpolegrids,asimplerotatedsphericalcoordinatesystemwasintroducedintotheCommunitySeaIceModelversion4(CSIM4),whichisacomponentoftheCommunityClimateSystemModel(CCSM)oftheAmericanNationalCenterofAtmosphericResearch(NCAR),todealwiththe'poleproblems'.Inthenewcoordinates,boththegeographicalNorthPoleandSouthPolelieinthemodelequatorandgridsizesnearthepolarregionaremoreuniform.WithreanalysisdatasetofAmericanNationalCentersforEnvironmentPrediction(NCEP)andLevitusdatasetwithoutconsideringsub-mixedlayerheatflux,themodelwasintegratedfor100yearswiththermodynamicsprocessinvolvedonlyintheformer49yearsandbothdynamicandthermodynamicprocessesinvolvedinthelefttime.Innerconsistencyofmodelresultswascheckedwithnocontradictionfound.Theresultsoflast10years'modeloutputwereanalyzedanditisshownthatthesimulatedseaiceseasonalvariationisrationalwhereasseaiceextentintheBarentsSeainwinterislargerthanthatofobservation.Numericalexperimentoninfluenceofsub-mixedlayerheatfluxwasalsocarriedoutanditisshownthatthesub-mixedlayerheatfluxcanmodulateseasonalvariationofseaicegreatly.Asamodelcomponent,theseaicemodelwithrotatedsphericalcoordinateswascoupledwithothermodels(theoceanicgeneralcirculationmodelistheLASG/IAPClimateSystemOceanModel(LICOM)withreducedgrid,othermodelsarecomponentsofNCARCCSM2)formingaclimatesystemmodelanditspreliminaryresultswerealsogivenbriefly.

简介：Employingtheavailabletheory,theanaloguesimulationcriterionofthecavitationisintroducedtoprovidethebastsfortheanaloguesimulationofthecavitation.

简介：Thedevelopmentofnewproductsofhighquality,lowunitcost,andshortleadtimetomarketarethekeyelementsrequiredforanyenterprisetoobtainacompetitiveadvantage.Thispartofthepaperpresentsamethodologytoautomaticallysimulatetheconceptualdesignresultsinthevirtualentityform.Totheidentifiedbasicmechanisms,theirkinematicanalysisiscarriedoutbymatchingbasicBarranovtrusses,andtheirvirtualentitiesaremodeledbasedonfeature-basedtechniqueandencapsulatedasonedesignobject.Basedonthestructuresofthebasicmechanismsandtheirconnections,aspacelayouttothemechanicalsystemcorrespondingtothesymbolicschemeisthenfulfilled.Withthepreset-assemblyapproach,allpartsinthemechanicalsystemareputontoproperpositionswheretheconstraintequationsaremetaccordingtothespacelayoutresults.Inthisway,thevirtualentityassemblymodelofthemechanicalsystemrelativetothesymbolicschemeissetup.Theapproachpresentedinthispapercannotonlyobtaininnovativeconceptualconceptualdesignresults,butalsocanevaluatetheirperformancesunder3-Denviromentefficently.

简介：AnelectromagnetdesignsystemisdevelopedusingVisualC++languageandOpenGLtechnologytovisualizeparametric3Dmodel.Thesystemconsistsofprimarydesign,optimizationdesign,dynamicandstaticcharacteristics,andvisualsimulation.Allempiricalparametersandcurvesusedindesignprocessarestoredindatabase.Throughhuman-computerinteractions,anelectromagneticsystemcanbedesignedconvenientlywiththeresultsandcharacteristicscurvesdisplayedingraphicmodel.Usingthissystemcangreatlyshortentheprocessofproductdesign,andtheresultssatisfytechnicalrequirements.

简介：ObjectiveToestablishathree-dimensionalmodelofthetemporalboneusingCTscanimagesforstudyoftemporalbonestructuresandsimulationofmastoidectomyprocedures.MethodsCTscanimagesfrom6individuals(12temporalbones)wereusedtoreconstructtheFallopiancanal,internalauditorycanal,cochlea,semicircularcanals,sigmoidsinus,posteriorfossafloorandjugularbulbonacomputerplatform.Theiranatomicalrelationswithinthetemporalbonewererestoredinthecomputedmodel.Thesamemodelwasusedtosimulatemastoidectomyprocedures.ResultsThereconstructedcomputermodelprovidedaccurateandclearthree-dimensionalimagesoftemporalbonestructures.Simulationofmastoidectomyusingtheseimagesprovidedproceduralexperiencescloselymimickingtherealsurgicalprocedure.ConclusionComputer-aidedthreedimensionalreconstructionoftemporalbonestructuresusingCTscanimagesisausefultoolinsurgicalsimulationandcanaidsurgicalprocedureplanning.

简介：Thispaperpresentsthedevelopmentofthebloodflowsimulationintwodimensionsovertherealgeometryofthefemoralartery.TheNavier-Stokesequationsaresolvedusingthefiniteelementmethod,toobtainthedistributionsofthebloodpressureandflowvelocityinmultipleinstantsoftimeanddifferentplacesofthefemoralarteryandthusdeterminethecurrentconditionofthebloodvessels.Thevelocityfieldshowsalaminarbehavior,where,thevelocityishigherinthecenterofthearteryanddecreasesasthebloodflowapproachesarterywalls.Inspiteofallarteryandbloodflowpropertiesnotbeingconsidered,thevaluesofpressureandvelocityobtainedarewithinthenormalranges.Finallythemodelisusedtoverifyifthereexistirregularitiesinthebloodflowinbothhealthysubjectsandsickpatients.

简介：DigitizationfromGEANTtrackingrequiresapredictablesequenceofstepstoproducerawsimulateddetectorreadoutinformation.Wehavedevelopedasoftwareframeworkthatsimplifiesthedevelopmentandintegrationofdigitizersbyseparatingthecoordinationactivities(sequencinganddispatching)fromtheactualdigitizationprocess.Thisseparationallowsthedevelopersofdigitizerstoconcentrateondigitization.Theframeworkprovidesthesequencinginfrastructureandadigitizermodel,whichmeansthatalldigitizersarerequiredtofollowthesamesequencingrulesandprovideaninterfacethatfitsthemodel.

简介：exergy分析就在葡萄牙(修剪的森林残余和藤)生产的甲烷和agro工业的残余的燃烧而言被执行。关于一个热力学的过程的不能反逆的性能是路径依赖者，燃烧过程作为各源于不同假想路径正在认为一个人由四主要子进程描绘了：混合的反应物，燃料氧化，内部热精力交换(热转移)，并且产品混合。exergetic效率用使用可视化Basic家代码开发的零个维的模型被计算。exergy损失主要由于内部热精力交换子进程，这被结束。当没有以前的燃料氧化，反应物被预热直到点火温度时，从这子进程的exergy损失更高。在另一方面，全球exergy破坏能是在氧化剂溪流上增加压力，反应物温度和氧内容的minored。这方法论允许有更大的exergy损失的现象和进程的鉴定，这些损失为什么并且怎么发生的理解有联系到对关键的每个系统的参数的exergy变化作为一种竞争技术从生物资源产品实现syngas燃烧。

简介：ＳｉｍｕｌａｔｉｏｎｏｆｔｈｅａｃｔｉｖｅａｎｄｑｕｉｅｔｐｅｒｉｏｄｓｏｆｓｅｉｓｍｉｃｉｔｙＺＨＯＮＧ－ＸＭＮＨＵＡＮＧ（黄忠贤）（ＩｎｓｔｉｔｕｔｅｏｆＣｒｕｓｔａｌＤｙｎａｍｉｃｓ，ＳｔａｔｅＳｅｉｓｍｏｌｏｇｉｃａｌＢｕｒｅａｕ，Ｂｅｉｊｉ...

简介：TNT的数字模拟在水下爆炸与AUTODYN被执行软件。模拟结果上的人工的粘性和网孔密度的影响被讨论。在炸药的爆炸波浪和水里的冲击波在爆炸的早时间期间是高频率波浪。好网孔(不到1，公里)在炸药和水附近、小的线性粘性系数和二次的粘性系数(0.02和0.1分别地，缺省值的1/10)在数字模拟模型被需要。根据这些规则，数字计算压力侧面能匹配很好，那些由Zamyshlyayev实验公式计算了。不同山峰压力将被涂离开，在上游的相对错误将下游地被堆积使下游的山峰压力更低。