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  • 简介:Trafficruleisakeyfactoraffectingtrafficflowandsafety.Wedevelopourmodels,includingthecellularautomatatrafficflowmodelaswellasthelinearregressionone,aimingatcalculatingtrafficflowandevaluatingsafetyconditionswithvariedtrafficrules.Then,wethoroughlyinvestigatefourtypesofpathsinafreeway,namelytwostraightlanes,threestraightlanes,ramps,androundaboutsascasestudiesanddiscussthedifferenttrafficrulesascomparison.Theresultsdemonstratethat“Keep-Right-Except-To-Pass”ruleisnotaseffectiveasthefreeruleinpromotingtrafficflow;however,thisruleensuressafetyfordriversbetterthanthefreerule.Additionally,anewtrafficrule,whichsetsdifferentpostedspeedlimitsforadjacentlanes,isproposedtopromotebettertrafficflowwithsafetyrequirementssatisfied.Furthermore,weapplyeffectiverulesandalternatives,leftdrivingnormsaswellasintelligentsystemasextensionandobtainbetterresults.Finally,model’ssensitivityanalysisregardingtoprobabilityofdeceleratingandpostedspeedlimitsprovesthestabilityofourresults.

  • 标签: TRAFFIC FLOW CELLULAR AUTOMATA Safety EVALUATION
  • 简介:Thisthesisisexpectednotonlytogivereaderspleasurefromtheangleofbeinghumorous,butalsotohelpthemgetabetterunderstandingofEnglishhumorfromthepragamaticperspective.

  • 标签: ENGLISH HUMOR PRAGMATICS
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  • 简介:与联系的谎言点对称新(2+1)维的KdVequationu_t+3u_xu_y+u_(xxy)=0被调查。一些类似减小被解决相应特战程导出。为这个方程的Painleve分析也被介绍,孤立子答案从Baecklund转变直接被获得。

  • 标签: 二维KdV方程 LIE对称分析 PAINLEVE分析 精确解
  • 简介:-ThisarticleisaimedattheexperimentalstudyofthehydrodynamicloadinginducedbywavesandcurrentactingontheJZ20-2submarinecompositepipelines.Thecorrespondinghydrodynamiccoefficientsobtainedinthisexperimentalstudycanbeappliedtoengineeringprojects.

  • 标签: SUBMARINE pipeline hydrodydnamic coefficient REGULAR WAVES
  • 简介:Thispaperreportsthatsingle-layerandgradedAu-TiO2granularcompositefilmswithAuatomcontent15%-66%werepreparedbyusingreactiveco-sputteringtechnique.Thethird-orderopticalnonlinearityofsingle-layerandgradedcompositefilmswasinvestigatedbyusingsandp-polarizedZ-scansinfemtosecondtimescale.Thenonlinearabsorptioncoefficientβeffofsingle-layerAu-TiO2filmsismeasuredtobe-2.3×1030.76×103cm/GWwithAuatomcontent15%-66%.Theβeffvalueofthe10-layerAu-TiO2gradedfilmisenhancedtobe-2.1×104cm/GWcalculatedfromp-polarizedZ-scans,whichisabouttentimesthemaximumβeffofsingle-layerfilms.Broadenedresponseinthewavelengthregion730-860nmoftheenhancedopticalnonlinearityofgradedAu-TiO2compositefilmswasalsoinvestigated.

  • 标签: Au-TiO2粒状复合材料 等级复合薄膜 光学非线性吸收 物理研究
  • 简介:二层的结构由PS/PMMA-DR1合成电影组成多孔的硅cladding层上的平面波导层在我们的实验被制作。导致的栅栏被二根NdYAG激光横梁的相互作用在多孔的silicon/PMMA-DR1波导在1064nm基于第三个非线性的光性质形成。第一份订单的衍射效率使衍射光被测量是大约0.2%全部的输出。

  • 标签: 多孔渗水硅 PMMA-DR1 自衍射 动态光栅 复合薄膜
  • 简介:Single-gritgrindingofa2.5Dwovencompositewasinvestigatedbythefinite-elementmethod(FEM)usingaunit-cellmodel.Accordingtoourhypotheses,theaxisofthewarpyarnwasasinusoidalcurveandthecrosssectionoftheweftyarnwasshapedlikeabiconvexlens.AVUMATsubroutinewasusedtoconstructtheconstitutivemodelofthe2.5Dwovencomposite.ThegrindingprocessofthecompositewasanalyzedusinganFEMsimulationwiththeABAQUS/Explicitsoftware.Avalidationexperimentwasalsocarriedout.Thesimulationresultsshowedthatagrindingcrackwaswellsimulated.Furthermore,thejunctionsbetweenthewarpyarnandweftyarnwerefoundtobeseriouslydamagedandcrackswereobservedtoextendoutwardalongthewarpfiberduringgrinding,ingoodagreementwiththeexperimentalresults.Inaddition,thestrainofweftyarnswasobviouslygreaterthanthatofwarpyarnswhenthegrindingdirectionwasperpendiculartotheweftyarnsandparalleltotheaxisofthewarpyarns.Theseresultsdemonstratethatthemesostructurestronglyinfluencesthegrindingdamageinflictedonwovencomposites.

  • 标签: Single-grit GRINDING FINITE ELEMENT Unit cell