简介：ThepaperestablishestwostochasticSIRSmodelswithjumpstodescribethespreadofnetworkvirusbycyberwar,terrorismandothers.First,addingrandomperturbationsproportionallytoeachvariable,wegetthedynamicpropertiesaroundthepositiveequilibriumofthedeterministicmodelandtheconditionsforpersistenceandextinction.Second,givingarandomdisturbancetoendemicequilibrium,wegetastochasticsystemwithjumps.BymodifyingtheexistingLyapunovfunction,weprovethepositivesolutionofthesystemisstochasticallystable.

简介：Inthispaper,therecentstudiesoflaboratoryastrophysicswithstrongmagneticfieldsinChinahavebeenreviewed.OntheShenguang-IIlaserfacilityoftheNationalLaboratoryonHigh-PowerLasersandPhysics,alaser-drivenstrongmagneticfieldupto200Thasbeenachieved.Theexperimentwasperformedtomodeltheinteractionofsolarwindwithdaysidemagnetosphere.Alsothelowbetaplasmamagneticreconnection(MR)hasbeenstudied.Theoretically,themodelhasbeendevelopedtodealwiththeatomicstructuresandprocessesinstrongmagneticfield.Alsothestudyofshockwavegenerationinthemagnetizedcounter-streamingplasmasisintroduced.

简介：Wehavedevelopedanewradiographysetupwithashort-pulselaser-drivenx-raysource.Usingaradiographyaxisperpendiculartobothlong-andshort-pulselasersallowedoptimizingtheincidentangleoftheshort-pulselaseronthex-raysourcetarget.Thesetuphasbeentestedwithvariousx-raysourcetargetmaterialsanddifferentlaserwavelengths.Signaltonoiseratiosarepresentedaswellasachievedspatialresolutions.ThehighqualityofourtechniqueisillustratedonaplasmaflowradiographobtainedduringalaboratoryastrophysicsexperimentonPOLARs.

简介：Typhoon-generatedwavesposeaseriousthreattothedevelopmentofoffshorewindpower;thereforetypicalwaveparameterscausedbytyphoonnearDonghaiBridge,ademonstrationareaofoffshorewindfarm,wereanalysed.WepayparticularattentiontothedissipationtermwhichisoneofthesourcetermsofgoverningequationforwindwaveevolutioninWAVEWATCHIII.Anisotropicenergydissipationinthewavepropagationdirectionisconsideredandfurtherappliedinourmodel.Agoodagreementisobservedbycomparisonwithinsitudata.Furthermore,thenewimprovedmodelisusedtosimulateandforecastwaveevolutioncausedbyChan-Hom(201509).Theevolutionoftypicalwaveparametersi.e.significantwaveheightandmeanwaveperiodwerediscussedintheEastChinaSea,especiallynearDonghaiBridge.

简介：二轨道的哈伯德模型被在真实空间和动量空间使用Hartree-Fock近似数字地学习，并且碱金属的地面状态性质熨硒化物半导体的KFe1.5Se2被调查。有，顺序被发现的stripetypeantiferromagnetic(AFM)的一份菱形类型Fe空缺订单在散布实验的中子被观察[J.赵，等，Phys。加快。Lett。109，267003(2012)]。跳跃参数被在真实空间适合试验性地观察的条纹AFM阶段获得。这些跳跃参数然后被用来在动量空格学习半导体的地面状态性质。是有大所在地的库仑排斥U的一个强烈相关的系统被发现，类似于莫特·阿夫姆绝缘体铜氧化物超导体的父母混合物。我们也发现在dxz和dyzorbitals的电子职业数字和磁化同时变得不同，显示轨道的订什么时候U>Uc(3.4eV)。这些结果暗示在二orbitals之间的旋转对称被轨道的订打破并且因此驾驶磁性的联合的强壮的anisotropy被实验观察了并且在这混合物的条纹类型AFM顺序可以被和观察大anisotropy的轨道的订引起。