简介:我们从集中的繁殖的观点在复杂近似的地里讨论一些古典定理和一些最近的结果。我们也在C2在集中的繁殖上证明一条定理。
简介:Inthispaperthepropagationandbreakingofthesolitarywave,thesinusoidalwaveandthesecondStokeswaveonaslopeof1/30arediscussedbasedupontheTUMMACmethod,andthevelocityfieldsofbreakingwavesontheslopeareobtainedbyusingthetracingmethod.The.numericalresultsforwavedeformationareingoodagreementwithexperimentaldata,andthebreakerindexesdependingonthekineticcriterionagreeapproximatelywithprevi-ousresults.Furthermore,comparedwiththeexperimentalresultsmeasuredbyIwagakiandbytheauthors,thetendencyofvelocitydistributionofbreakingwavescomputedbythisnumericalmethodisalsosatisfactory.
简介:我们在一棵锯季度的白杨上使用了声学的测试在声学的波浪上学习木头anisotropy和洞缺点的效果的木材速度和旅行路径,和我们在木头调查了声学的波浪繁殖行为。木材标本首先处于未修改的状况被测试然后在在实验室的声学的波浪的播送时间调节的改变尺寸确定的洞缺点的介绍以后测试了。标本的光线的节上的二维的声学的波浪轮廓地图然后基于试验性的数据被模仿并且分析。当波浪通过木头在各种各样的方向过去了,我们测试了在木头谷物和声学的波浪速度之间的关系。伍德anisotropy在速度和通过超过的木材传递纵的波浪的声学的波浪,和速度的旅行路径上有重要效果光线的速度。而且,洞缺点在木材的光线的节上改变了声学的波浪时间轮廓。从刺激的声学的波浪运输比在未经触动的木头更慢慢地在有缺点的木头在一个洞后面指向这个区域。
简介:Recordingsofseismicwavespropagatingfromearthquakesourcetoastationattheearth'ssurfaceareasystemresponsefunction.Theconvolutionoperatorintimedomaincanbesimplifiedasamultiplicationoperatorinfrequencydomain.Wediscussinfrequencydomaintheseparationofsource,pathandsiteeffectsforglobalscalingofearthquakesourceradiation.Alsodiscussedaresourcescalingmodel,faultingmechanism,andtheH/Vinversionproblemswithcrustalandnearsurfacestructures.Grossfeaturesofapparentsourcespectraappeartobenotmuchregion-dependentalthoughtheremaybedifferencebetweentectonicstyleswithinaregionoftectonicmixtureforwhichweneedfurtherstudyasdataaccumulate.Verticalspectramaybeabetterapproachtoapproximatesourceradiation,asithaslesscrustalamplificationeffectsthanhorizontalspectra.TheH/Vratioisevidentlyacomprehensiveindicatorofamplificationeffectsfromnearsurfacetodeepstructure.Thisgivesitpotentialasaninversiontooltodeducesitecrustalstructure.
简介:Embryooflilacs(SyringaL)cultureinvitroandtherapidpropagationwerestudied.Theorthogonalexperiments,includingtheselectionofbasalmedium,embryoageandotherfactorssuchassugar,benzyladenine(BA),naphthaleneaceticacid(NAA)andglutamine(Gln),werecarriedout.TheresultsindicatedthattheoptimalmediumforembryoculturewasMonniermediumsupplementedwithNAA(0.001mg@L-1),BA(0.1mg@L-1),sugar(50g@L-1),andGln(400mg@L-1),withagerminationrateof91.7%atleast;theoptimalembryoagewas50d;andGlnhadsignificanteffectsonthegerminationrateofembryo.Moreover,theoptimalmediumforsubculturewasMS+BA(2mg@L-1)+NAA(0.001mg@L-1)+Gln(0.5mg@L-1),withthepropagationcoefficientof3.6atleast.
简介:Wededuceacompletewavepropagationequationthatincludesinhomogeneityofthedielectricconstantandpresentthispropagationequationincompactvectorform.Althoughsimilarequationsareknowninnarrowfieldssuchasradiowavepropagationintheionosphereandelectromagneticandacousticwavepropagationinstratifiedmedia,wedevelophereanovelapproachofusingsuchequationsinthemodelingoflaserbeampropagationinnonlinearmedia.Ourapproachsatisfiesthecorrespondenceprinciplesinceinthelimitofzero-lengthwavelengthitreducesfromphysicaltogeometricaloptics.
简介:Quartz.NET是一个开源的调度框架,经历了2年多的开发终于发布了。该版本对应Java的Quartz1.6.2版本。它在作业调度方面提供了很好的灵活性而不牺牲简单性,能够为执行一个作业而创建简单的或复杂的调度。目前的版本支持数据库、集群、插件,支持cron-like表达式等等。