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简介：１ＩｎｔｒｏｄｕｃｔｉｏｎＷｉｔｈｔｈｅｉｎｔｒｏｄｕｃｔｉｏｎｏｆｃｏｍｐｕｔｅｒｓｉｎｔｏｍａｉｎｓｔｒｅａｍｍａｎｕｆａｃｔｕｒｉｎｇａｃｔｉｖｉｔｉｅｓ，ｆｅａｔｕｒｅ－ｂａｓｅｄｇｅｏｍｅｔｒｉｃａｌｍｏｄｅｌｈａｓｂｅｃｏｍｅｔｈｅｋ...

简介：Longtermmorphologicalsimulationsusingcompletecoupledmodelsleadtoverytimeconsumingcomputations.Latteux(1995)presentedmodellingtechniquesdevelopedfortidalcurrentsituationsinordertoreducethecomputationaleffort.Inthispapertheapplicabilityofsuchmethodstosmallscaleproblemsisinvestigated.Itispointedoutthatthesemethodscanbetransferredtosmallscaleproblemsusingtheperiodicityofthevortexsheddingprocess.

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简介：Thefoodindustryusesawidevarietyofprocesseswhicharenotwellunderstood.Currentmodellingandmeasurementapproachesarereviewed,withspecificreferencetoworkatBirminghamonParticletracking(PEPT)andthepotentialoftemperaturetimeindicatorsinprocessvalidation.

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简介：病毒结构的一个可观的数字被发现了，更多被期望被鉴别。不同病毒对称能在nanoscale水平被观察。科学家认识到的一些病毒的机械模型在这份报纸被描述，没有哪个考虑了分系统的内部变丑。为一些病毒元素的作者模型被介绍，与僵硬、灵活的连接，它包括子单元的内部变丑复制病毒的运动。

简介：为有切口的蜿蜒地流的河的一个更新的线性计算机模型被开发了。模型在一条切入的蜿蜒地流的隧道模仿床地形学，流动地，和河岸侵蚀率。在在上游的沉积负担减少的一种情形(例如水坝闭合或土壤保存)，冲积的河经验十字节加深并且斜坡变平。隧道迁居率可能以二个方法被影响：减少的隧道斜坡和浸泡河岸高度。建议数字模型联合传统一个维(1D)在模仿隧道侵蚀的沉积运输模型和为隧道蜿蜒地流的线性模型。一个非平衡沉积运输模型被用来更新隧道床举起和阶段。一个线性蜿蜒地流模型被用来计算隧道排列和河岸侵蚀/生长，它被1D沉积运输模型接着使用。在1D沉积运输模型，隧道床举起和阶段在每隧道十字节被代表。在蜿蜒地流的模型，床举起和阶段被存储在二维(2D)代表隧道和地面性质(举起和阶段)的房间。一个新方法被建议关于在1D河几何学和2D隧道和地面之间的床举起和床材料部分交换信息。模型的能力用隧道切口在发生在在上游的结束的Friedkin的实验室隧道迁居的模拟被表明。

简介：Amodelforsimulatingcadmiumtransportinasoil-plantsystemwasbuiltusingacommercialsimulatingprogramnamedPowersimonthebasisofinput-outputprocesseshappeninginthesoil-plantsystem.COnvectiveanddispersivetransportprocessesofcadmiuminsoilprofileareembedded.Simulationsonadailybasehavebeendoneuptoatotalsimulatingtimeof250years,Resultsshowthatapplicationsofsewagesludgeandfertilizeratthesimulatedrateswouldonlycauseslightcadmiumaccumulationsineachlayerofthesoil,andcadmiumaccumulationwouldbelevellingoff,reachinganequilibriumconcentrationslayerbylayerdownwardaftercertaintime.Thetimescaletoreachanequilibriumconcentrationvariesfrom10yearsforthetopthreelayerstoover250yearsforthebottomlayers.Plantcadmiumuptakewouldincreasefrom52umm^-2underinitialsoilcadmiumconcentrationsto65ugm^-2underequilibriumsoilcadmiumconcentrations,whichwouldnotexceedthemaximumallowablecadmiumconcentrationinwheatgrains.Mainparameterswhichinfluencecadmiumaccumulationandtransportinsoilaretotalcadmiuminput,rainfall,evaporation,plantuptakeandsoilproperties.

简介：Atheoreticalapproachisderivedtostudyinteractionoflinearwaterwaveswithanairbubblecurtainusedasapneumaticbreakwater.Modellingofwavetransmissionthroughanaerialbarrierisacomplextaskduetoaneedtocoverprocessesassociatedwithwave-currentinteraction,effectsoftwo-phaseflows,wavedamping,etc..Aninitialboundary-valueproblemissolvedbyapplyinganefficienteigenfunctionexpansionmethodandatime-steppingprocedure.Thederivedsemi-analyticalsolutionisusedtostudytheeffectofbasicparametersofthemodelonwavedissipativepropertiesofthepneumaticbreakwater.Resultsshowthatwavedampingbythebreakwaterismainlyaffectedbyanairflowrate.Theincreasedairdischargeresultsinhighervelocitiesofascendingbubblesandincreasesaerialbarrierwidth.Thisleadstoasubstantialreductionoftransmittedwaveheights,especiallyforwavesofintermediatelengthandshortwaves.Inordertoverifytheapplicabilityofthepresentedtheoreticalapproach,laboratoryexperimentsareconductedinawaveflumefordifferentwaveregimesandpneumaticbreakwatercharacteristics.Theanalysisofawavetransmissioncoefficientcalculatednumericallyandmeasuredinthelaboratoryconfirmsthatthederivedmodelcanbeusedforacertainrangeofwaveconditions.

简介：Inthispaper,thescrewtransformationsarediscussedindetailandtheirmatricesaregiven.BasedonLagrangianequations,anewmethodformodellingthedy-namicbehaviorofrobotsispresented.Thederivationissimple,andtheconfigurationofthemodelisconcise.Allthecoefficientsarecalculatedinsimplerecursiveway,whichcanbeeasilyprogrammedincomputation.Themethodpresentedcanalsobeusedinthedy-namicandthekinematicstudyofspatialmechanisms.

简介：Theanalysisofthesolutionoffluidnetworkmodeliscarriedouttomatchtheneedofgraphicallymodularauto-modellingforpowerplantsimulatorsbecauseofthesymmetryandsparsityofthelinearsystemofequations,anewmethodofimprovedGausseliminationispresentedforthesolutionoflargescalematrices.ComparisonofthenewmethodwiththeclassicalGausseliminationmethod,theGauss-Seideliterativemethodaregiven.Theresultsshowthatthealgorithmprovidedisbetterthantheothersandissuitableforauto-modellingoffluidnetowrksofpowerplants.

简介：Thisresearchtakestheviewthatthemodellingoftemporaldataisafundamentalsteptowardsthesolutionofcapturingsemanticsoftime.Theproblemsinherentinthemodellingoftimearenotuniquetodatabaseprocessing.Therepresentationoftemporalknowledgeandtemporalreasoningarisesinawiderangeofotherdisciplines.Inthispaperanaccountisgivenofatechniqueformodellingthesemanticsoftemporaldataanditsassociatednormalizationmethod.ItdiscussesthetechniquesofprocessingtemporaldatabyemployingaTimeSequence(TS)datamodel.Itshowsanumberofdifferentstrategieswhichareusedtoclassifydifferentdatapropertiesoftemporaldata,anditgoesontodevelopthemodeloftemporaldataandaddressesissuesoftemporaldataapplicationdesignbyintroducingtheconceptoftemporaldatanormalisation.

简介：Oftenthelifecycledataoccurascountofthevitaleventsandarerecordedasintegers.Thepurposeofthisarticleistomodelthefertilitybehaviorbasedonreligious,educational,economic,andoccupationalcharacteristics.TheresponsesofclassifiedgroupsaccordingtothesedeterminantsareexaminedforsignificantinfluenceonfertilityusingPoissonregressionmodel(PRM)basedontheNationalFamilyHealthSurvey-3dataset.TheobservedandpredictedprobabilitiesunderPRMindicatemodalvalueoftwochildrenforthePoissondistributionmodeleddata.Presenceofdominanceoftwochildinthedatamotivatestheauthorstoadoptmultinomialregressionmodel(MRM)inordertolinkfertilitywithvarioussocioeconomicindicatorsresponsibleforfertilityvariation.Choiceoftheexplanatoryfactorsislimitedtotheavailabilityofdata.Trendsandpatternsofpreferenceforbirthcountssuggestthatreligion,caste,wealth,femaleeducation,andoccupationarethedominantfactorsshapingtheobservedbirthprocess.Empiricalanalysissuggeststhatboththemodelsusedinthestudyperformsimilarlyonthesampledata.However,fittingofMRMbytakingbirthcountoftwoascomparisoncategoryshowsimprovedAkaikeinformationcriterionandconsistentAkaikeinformationcriterionvalues.CurrentworkcontributestotheexistingliteratureasitattemptstoprovidemoreinsightintothedeterminantsofIndianfertilityusingPoissonandMRM.

简介：Athree-dimensionalsimulationmodelfortheplasma-MIGweldingprocess,whichtakestheinteractionbetweentheplasmaarcandMIGarcintoaccount,ispresentedandthequasi-steadytemperaturefieldsontheworkpiecearecalculatedwiththemodel.The10mm-5A06aluminumalloyisweldedandthetemperaturefieldsaremeasuredwiththethermoelectriccouple.Thesimulationresultsandmeasuredresultsshowthatthebiggestdeviationofpeaktemperaturebetweenthemisbelow20℃,whichindicatesgoodcoincidencebetweenthesimulationandmeasurement.

简介：Thebiologicalimmunesystemisacomplexadaptivesystem.Therearelotsofbenefitsforbuildingthemodeloftheimmunesystem.Forbiologicalresearchers,theycantestsomehypothesesabouttheinfectionprocessorsimulatetheresponsesofsomedrugs.Forcomputerresearchers,theycanbuilddistributed,robustandfaulttolerantnetworksinspiredbythefunctionsoftheimmunesystem.Thispaperprovidesacomprehensivesurveyoftheliteraturesonmodellingtheimmunesystem.Fromthemethodologyperspective,thepapercomparesandanalyzestheexistingapproachesandmodels,andalsodemonstratesthefocusingresearcheffortonthefutureimmunemodelsinthenextfewyears.

简介：纸介绍一个词法模型和它的申请的发展给试验性的模型河。模型考虑隧道移植的关键进程，包括床变丑，河岸失败并且弄湿并且弄干。在拐弯的第二等的流动在侧面的沉积运输起一个重要作用，它进一步影响隧道移植。一个新公式被导出预言近床的第二等的流动速度，速度的大小在被连接到侧面的水水平坡度。因为仅仅非连贯的沉积在当前的学习被考虑，河岸失败基于休息的沉没角度的概念被建模。弄湿并且弄干的过程用一个存在方法被建模。在为各种各样的分泌物的数字模型预言和试验性的观察之间的比较被做了。模型预言隧道平面形状和代表性的形状与实验室观察通常同意很好，这被发现。情形分析也被执行在隧道迁居过程上调查第二等的流动的影响。它证明如果第二等的流动的效果被忽略，在侧面的方向的隧道尺寸将严重被低估。

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简介：InthispaperTVDexplicitschemesdevelopedrecentlyinCFDareusedtosimulatefivemodelsofboresduetodam-break.Numericalexperimentsarepresentedtodemonstratethattheyachievehighresolutionandgeneratenospuriousoscillationsandtoshowtheversatilityoftheschemes.

简介：Experimentsshowthatsiltsandsiltysoilsexhibitcontractionfollowedbydilationduringshearingandtheslopeoffailurelinedecreasesatlargestrains,termedasphasetransformationbehaviour.Thispaperistodevelopanewmicromechanicalstress-strainmodelthataccountsforthephasetransformationbehaviourbyexplicitlyemployingthephasetransformationlineanditsrelatedfrictionangles.Theoverallstrainincludesplasticslidingandplasticcompressionamonggrains.Theinternal-frictionangleatthephasetransformationstateandthevoidstatevariableareemployedtodescribethephasetransformationbehaviour.ThemodelisexaminedbysimulatingundrainedanddrainedtriaxialcompressiontestsperformedonPiteasilts.Thelocalstress-strainbehaviourforcontactplanesisalsoinvestigated.更多还原