简介:XinjiangfolkartpatternsanddesignsarethearttreasuresofChineseculturaltreasure-houseaswellastheprecioushumanisticresourcesofWesternChina.Intheprocessofcollecting,sortingoutandstudyingXinjiangfolkartpatterns,theelegantsimplicityaswellasthegoodtastestandsoutimpressively,andthepatternshapeaswellasthelayoutcompositionshowsadistinctivenationaltraitandastronglocalcolor.As'TheGeometryofNature',fractalgeometrybringsaboutanewperformingmethod.Variousfractalgraphsarecreatedbydifferentgenerators.TheirdynamicpicturescontainvisualinformationofgreatmagnitudeandtheirartisticeffectissimilartoXinjiangfolkartpatterns,whichfullyprovesthefractalbeautyinXinjiangfolkartpatterns.更多还原
简介:Car-followingtheoryisanimportantresearchdirectioninthefieldofintelligenttransportationsystems(ITS),itdescribestheone-by-onefollowingprocessofvehiclesonthesamelaneintrafficflow,andoneofitsimportantissuesiscongestioncontrol.Toexplorethestrategyforcontrollingtrafficcongestion,thispaperintroducesandanalyzessomeclassiccar-followingmodels,andgivesasystematicreviewoftheirdevelopments.Moreover,inordertointroducetheapproachtoanalyzethestability,takingthefullvelocitydifference(FVD)modelforexample,thelocalandasymptoticstabilityanalysisisdiscussed,whilethecorrespondingnonlinearanalysisisalsoconducted.Then,someperspectivesofthecar-followingmodelaregiveninthefinal.