简介：摘要：随着我国经济高速发展，我国的汽车工业也快速的发展，白车身焊接车间作为汽车生产制造最重要的环节之一，对提高生产质量，缩短生产周期有着迫切的需求。基于此，本文以汽车白车身焊装工艺为研究对象，介绍了 Tecnomatix公司开发的 Process Designer、 Process Simulate软件及工艺分析新思路。

简介：摘要：近几年随着汽车工业得高速发展，由 Tecnomatix公司开发的 Process Designer/Process Simulate软件在汽车白车身焊装车间的应用越来越广泛。本文着重介绍了 Process Designer/Process Simulate软件在规划焊装生产线的思路 /方法已经软件本身的特点以及对电脑等硬件设施的需求。

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简介：破裂和劈开实验的一个特征是他们通常是内在地破坏的。裂缝完全不在一个不着重的系统愈合，甚至在象云母那样的晶体。这里，我们使用了为非破坏性的劈开和易碎的破裂实验由磁性的脱衣组成的磁性的固体。在磁性的脱衣之间，有不同机械特征的材料能被插入，例如特氟隆重或泡沫脱衣，到变化固体的机械性质。为劈开实验，我们开发了象主要深奥力量那样的参数能容易被测量的一台仪器。由插入缺陷，磁性的固体能在动态破裂实验被使用，与肉眼可见地模仿以一个更容易的方法的一个非破坏性的实验的优点，与高得多的速度发生在真实材料。仪器和使用的磁性的固体可能为在班上的破裂的示范是有用的。

简介：Avertical(laterallyaveraged)two-dimensionalhydrodynamicmodelisdevelopedfortides,tidalcurrent,andsalinityinabranchedestuarinesystem.ThegoverningequationsaresolvedwiththehydrostaticpressuredistributionassumptionandtheBoussinesqapproximation.Anexplicitschemeisemployedtosolvethecontinuityequations.ThemomentumandmassbalanceequationsaresolvedimplicitlyintheCartesiancoordinatesystem.Thetributariesaregovernedbythesamedynamicequations.Acontrolvolumeatthejunctionsisdesignedtoconservemassandvolumetransportinthefinitedifferenceschemes,basedonthephysicalprincipleofcontinuummediumoffluid.Predictionsbythedevelopedmodelarecomparedwiththeanalyticsolutionsofsteadywind-drivencirculatoryflowandtidalflow.Themodelresultsforthevelocitiesandwatersurfaceelevationscoincidewithanalyticresults.ThemodelisthenappliedtotheTanshuiRiverestuarinesystem.Detailedmodelcalibrationandverificationhavebeenconductedwithmeasuredwatersurfaceelevations,tidalcurrent,andsalinitydistributions.Theoverallperformanceofthemodelisinqualitativeagreementwiththeavailablefielddata.ThecalibratedandverifiednumericalmodelhasbeenusedtoquantifythetidalprismandflushingrateintheTanshuiRiver-TahanStream,HsintienStream,andKeelungRiver.

简介：与流畅的软件包裹一起，平均Reynolds的海军司烧(RANS)方法被用来与另外的戳鳍学习推进器和rudders的稳定、不稳定的相互作用。滑动网孔模特儿被雇用模仿在片，rudder和戳鳍之间的不稳定的相互作用。基于数字结果，推进器上的压力分发和鳍的效率作为攻击角度的功能被计算。RANS结果与潜在的方法计算的结果相比。潜在的方法和RANS方法的结果有好一致性，这被发现，但是他们为鳍，和这样相应的攻击角度产出最大的效率，那不是相同的。

简介：TheauthorsestablishtheHilbertianinvarianceprinciplefortheempiricalprocessofastationaryMarkovprocess,byextendingtheforward-backwardmartingaledecompositionofLyons-Meyer-ZhengtotheHilbertspacevaluedadditivefunctionalsassociatedwithgeneralnon-reversibleMarkovprocesses.

简介：Availablewaterandfertilizerhavebeenthemainlimitingfactorsforyieldsofspringwheat,whichoccupiesalargeareaoftheblacksoilzoneinnortheastChina;thus,theneedtosetupappropriatemodelsforscenarioanalysisofcroppingsystemmodelshasbeenincreasing.ThecapabilityofCropSyst,acroppingsystemsimulationmodel,tosimulatespringwheatgrowthofawidelygrownspringcultivar,'Longmai19',intheblacksoilzoneinnortheastChinaunderdifferentwaterandnitrogenregimeswasevaluated.Fielddatacollectedfromarotationexperimentofthreegrowingseasons(1992-1994)wereusedtocalibrateandvalidatethemodel.Themodelwasrunfor3yearsbyprovidinginitialconditionsatthebeginningoftherotationwithoutreinitializingthemodelinlateryearsintherotationsequence.CropinputparametersweresetbasedonmeasureddataortakenfromCropSystmanual.Afewcultivar-specificparameterswereadjustedwithinareasonablerangeoffluctuation.TheresultsdemonstratedtherobustnessofCropSystforsimulatingevapotranspiration,abovegroundbiomass,andgrainyieldof'Longmai19'springwheatwiththerootmeansquareerrorsbeing7%,13%and13%oftheobservedmeansforevapotranspiration(ET),grainyieldandabovegroundbiomass,respectively.AlthoughCropSystwasabletosimulatespringproductionreasonablywell,furtherevaluationandimprovementofthemodelwithamoredetailedfielddatabasewasdesirableforagriculturalsystemsinnortheastChina.

简介：Thebasicrequirementsof'businessprocesswalkthrough'methodwereclarifiedandthediagnosticwayofprocessproblemofenterprisewasdiscussed.Thebusinessprocessproblemscanbesummarizedasprocessstructuredefects,lackofsupportingmechanismsandlackofsupportingsystem.Thebusinessurgency-expectedreturnmatrixscoringmethod,whichcaneffectivelysorttheimportanceoftheprocessproblemswasalsoanalyzed.Theimplementationmethodandkeyelementsofprocessoptimizationwerediscussed,andtheevaluationindexsystemofprocessoptimizationwasalsoconstructed.Thecontinuouscustomer-orientedbusinessprocessoptimizationcaneffectivelyimprovethequalityoftheprocessoperationandenhancethelevelofenterpriseoperationmanagement.

简介：Thegrainsizecontrolofthetungstenpowderisessentialforhighqualitytungstenproductsmaking.Basedonthestudiesonthehydrogenreductionprocessoftungstenoxide,amicrocomputersystemisintroducedtothereductionprocessparameterscon-trol.Themicrocomputerprocesscontrolsystem,whichisnowrunninginZhuzhouTungstenandMolybdenumMaterialsPlant,controlstheprocessparametersincludingthetemperatureofthereductionfurnaceandthepressureofhydrogen.Italsocontrolsamechanicalpusherwhichpushstheboatschargedwithbluetungstenoxideintothefurnacetubes.Someofthetechniqueprob-lemsappearedinthereductionprocessandtheprocesscontrolareanalysedinthispaper.Theresultoftheexperimentisalsogiven.

简介：P.M.Djuric,etc.(1992)researchedonthesegmentationofnonstationarystochasticprocessintopiecewisestationarystochasticprocessbyBayesiancriterion,andgaveadynamicequationaboutthenumberofsegments,theirboundariesandARmodelordersforeachsegment,butdidnotgivedetailedsolutionfortheequation.Becausethesolutionfortheequationisverycomplex,thispaperinvestigatesthesolution,derivessomerecursiverelations,simplifiestheproblem,savescomputationtimeandgoesfurtherintothesegmentationofnonstationarystochasticprocessintopiecewisestationarystochasticprocess.

简介：TheEuropeanMonetaryUnion(EMU)appearedunprecedentedlyontheworldsceneas12Europeancountriesvoluntarilygaveuppartoftheirsovereigntytocreatearegionalmonetarysystem.TheintroductionofeurocurrencyisundoubtedlyacrucialsteptowardfurtherEuropeanintegration.

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简介：AMarkovianriskprocessisconsideredinthispaper,whichisthegener-alizationoftheclassicalriskmodel.ItisproperthatariskprocesswithlargeclaimsismodelledastheMarkovianriskmodel.Insuchamodel,theoccurrenceofclaimsisdescribedbyapointprocess{N(t)}_(t≥0)withN(t)beingthenumberofjumpsduringtheinterval(0,t]foraMarkovjumpprocess.TheruinprobabilityΨ(u)ofacompanyfacingsuchariskmodelismainlystudied.AnintegralequationsatisfiedbytheruinprobabilityfunctionΨ(u)isobtainedandtheboundsfortheconvergencerateoftheruinprobabilityΨ(u)aregivenbyusingageneralizedrenewaltechniquedevelopedinthepaper.

简介：Identifyingeachprocessandtheirconstraintrelationsfromthecomplexwiringharnessdrawingsquicklyandaccuratelyisthebasisforformulatingprocessroutes.Accordingtotheknowledgeofautomotivewiringharnessandthecharacteristicsofwiringharnesscomponents,weestablishedthemodelofwiringharnessgraph.Thenweresearchthealgorithmofidentifyingtechnologyprocessesautomatically,finallywedescribetherelationshipsbetweenprocessesbyintroducingtheconstraintmatrix,whichisinordertolayagoodfoundationforharnessprocessplanningandproductionscheduling.

简介：四维的实验直角的功能(4D文件结束)事实上是三维的文件结束(3D文件结束)的简单联合并且扩大文件结束(EEOF)，在这篇论文被提出测试数字模型的能力模仿气候和它的变化。4D-EOFanalysis能揭示分析变量，和它的相应年度、内部年度的变化的不仅水平典型模式，而且垂直结构的特征。建议的方法然后被用来分析每月吝啬的100-，500-，700-，and1000-hPa重力势高度地(4941格子和格子间距60km)并且他们的异例地in1989-1998从RMIP由MM5V3模仿了(地区性的气候为东亚为内部比较的工程建模)象他们的对应物一样的-Ⅱ,(用作观察的地)从在一样的时期的NCEP/NCARre-analysis数据集。在模仿东方亚洲气候和它的变化的MM5V3的能力被比较模仿并且观察的数据集的4D文件结束分析结果测试。比较分析结果证明观察月刊的第一特徵向量的水平模式意味着重力势高度地和它的垂直相等的barotropicfeature很好被模仿；观察每月吝啬的重力势高程异常地的开始的二特徵向量的模拟在vertical为他们的水平反常分布和重要相等的barotropic特征也是成功的很好被复制；并且而且，观察特征例如有高度的变化，每月吝啬的重力势高度/异例地的年度andinter年度的变化也是在模拟反映的井。因此，4D文件结束能包括地测试模仿气候的数字model'sability，它的变化和它在在1990年代的东亚的变化是令人满意的。

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简介：Thispaperdealswithacomparativeresearchbetweentwoprocessesofgranulation,namelymini-pelletizedsintering(MPS)andhybridpelletizedsintering(HPS),focusingonaspectssuchastheballingeffect,production,quality,andmineralographyandmetallurgicalperformanceofsinter.Theresultsindicatethatbothmethodscanresultinasatisfyingcapabilityinballingeffectandmetallurgicalperformanceofsinter,qualifiedtomeettheplantproductionrequirements,butwhenthegranulationtimeandgranulatingmoisturearesettoaround6minutesand7.0%respectively,MPSisbetterthanHPS.

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