简介：InthispaperweprovethatifTisaregularn-partitetournamentwithn≥>6,theneacharcofTliesonak-cyclefork=4,5,…,n.OurresultgeneralizestheoremsduetoAlspachandGuorespectively.

简介：Thecomputationoftherepresentativegroundmotions,tobeusedasinputforthedynamicanalysesofastruc-tureataparticularsite,canbeapproachedbyseveralmethods.Thechoiceoftheapproachdependsontwofactors:theda-taavailableandthetypeofproblemtobesolved.Thispaperreportstheexperienceoftheauthorsinapproachingaspecificcasestudy:theSouthernMemnonColossus,locatedinLuxor,Egypt.Theresultsareofinterestwhenthehazardanalysisestimationindevelopingcountriesandthesafeguardofculturalheritageareconcerned.Monumentshavetobetreatedasimportantstructures,duetotheirhistoricalandeconomicalvalue.Hence,standardproceduresofprobabilisticseismichaz-ardanalysisfortheseismicclassificationofcommonbuildingshavetobedisregarded.Ontheotherhand,theconsequencesofthecollapseofamonumentarenotcomparabletothoserelatedtostructuressuchasnuclearpowerplantsandlargedams,forwhichthedeterministicseismichazardanalysisprovidesastraightforwardframeworkforevaluationoftheworstcaseone,isadopted.Itsstochasticcomponentcancapturesignificantcharacteristicsofearthquakes,primarilythefrequencycontentswhichdependonthemagnitude(oftenreferredtoastheearthquakescalinglaw).

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简介：在这份报纸，我们为间隔地图与某旋转对介绍强烈简单的周期的观点并且证明如果一张间隔地图与给定的旋转对有一个周期，那么，它与一样的旋转对有一个强烈简单的周期。关键词间隔地图-强烈简单的周期-旋转对先生(2000)题目分类58F10-54H20工程由NNSF支持了(10461001，10361001)并且GNSF(0447004)

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简介：Takingspiralchuteasexample,amethodofunfoldeddrawingsandviewsaboutirregularspiralsurfaceisintroduced.Thesurfaceisundevelopableandtoocomplicatedtogetitsviewsortodrawunfoldeddrawingsbymanualmethod.Inthisarticle,aseriesoftheboundaryequationsofthespiralchutearederivedbythemovementruleofcoalflow,andthesolidandviewsofthespiralchutearegeneratedbasedonredevelopmentofSolidWorks.Unfoldeddrawingisdrawnapplyingtriangulardevelopmentprinciple.Theviewsandunfoldeddrawingsnotonlyareproducedautomatically,preciselyandparameterized,butalsoinvolvemoretechnologicalinformation.Soithasanimportantsignificanceontheirregularspiralsurface’sdevelopmentsandprocessing.

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简介：Tomakethelarge-scaleheliumcryogenicsystemoffusiondeviceEAST(experimentaladvancedsuper-conductingtokamak)runstably,asthecorepart,theheliumturbineexpandermustmeettherequirementofrefrigerationcapacity.However,previousdesignswerebasedononedimensionflowtodeterminetheaveragefluidparametersandgeometricparametersofimpellercross-sections,sothatitcouldnotdescriberealphysicalprocessesintheinternalflowoftheturbineexpander.Therefore,basedontheinversepropositionofstreamlinecurvaturemethodinthecontextofquasi-three-dimensionalflows,theall-over-controlledvortexconceptwasadoptedtodesigntheimpellerunderspecifiedcondition.Thewrapangleoftheimpellerbladeandthewholeflowdistributiononthemeridianplanewereobtained;meanwhiletheperformanceofthedesignedimpellerwasanalyzed.Thusanewdesignmethodisproposedherefortheinversepropositionoftheheliumturbineexpanderimpeller.

简介：在这份报纸，我们分类有限p组与确切顺序p的给定的结构的一A1亚群3。