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简介：Lattice,magneticandorbitalstructuresinKCuF3areself-consistentlydeterminedbyourclusterself-consistentfieldapproachbasedonaspin-orbital-latticeHamiltonian.Twostablestructuresareobtainedandfoundtobedegenerate,whichconfirmsthepresenceofthecoexistentphasesobservedexperimentally.Weclearlyshowthatduetotheinherentfrustration,thegroundstateofthesystemonlywiththesuperexchangeinteractionisdegenerate;whiletheJahn-Tellerdistortion,especiallytheanharmoniceffect,stabilizestheorbitalorderedphaseatabout23%inthex2-y2orbitandat77%inthe3z2-r2orbit.MeanwhilethemagneticmomentofCuisconsiderablyreducedto0.56μB,andmagneticcouplingstrengthsarehighlyanisotropic,Jz/Jxy≈18.Theseresultsareingoodagreementwiththeexperiments,implyingthattheanharmonicJahn-TellereffectplaysanessentialroleinstabilisingtheorbitalorderedgroundstateofKCuF3.

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简介：Inthispaper,wepresentanovelSupportVectorMachineactivelearningalgorithmforeffective3Dmodelretrievalusingtheconceptofrelevancefeedback.Theproposedmethodlearnsfromthemostinformativeobjectswhicharemarkedbytheuser,andthencreatesaboundaryseparatingtherelevantmodelsfromirrelevantones.Whatitneedsisonlyasmallnumberof3Dmodelslabelledbytheuser.Itcangrasptheuser'ssemanticknowledgerapidlyandaccurately.Experimentalresultsshowedthattheproposedalgorithmsignificantlyimprovestheretrievaleffectiveness.Comparedwithfourstate-of-the-artqueryrefinementschemesfor3Dmodelretrieval,itprovidessuperiorretrievalperformanceafternomorethantworoundsofrelevance

简介：在这研究，为波浪精力变换与固定指南翼推进一台推动汽轮机的表演的改进以便完成，表演上的指南翼形状的效果被实验调查。调查被模型在稳定的流动状况下面测试执行。作为结果，因为转矩的增加，有3D指南翼的汽轮机的效率比有2D指南翼的汽轮机的稍微优异，这被发现指南翼，尽管越过为3D案例的汽轮机的压力落下为2D案例比那稍微高。关键词液体机械-推动汽轮机-指南翼-波浪精力变换CLC数字TK735

简介：9to12,April,2018Suzhou,ChinaInternationalSymposiumseriesonHighPowerLaserScienceandEngineering,aimingatbringingtogetherworldwidescientistsandengineersworkingonhighpowerlaserandphysics,isheldeverytwoyearssince2014.Onbehalfofthe3rdInternationalSymposiumonHighPowerLaserScienceandEngineering(HPLSE2018),

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简介：TheNd2O3nanoparticleswhichmodifiedbyAOTwaspreparedusingmicrioemulsionmethodinthesystemofwater/xylene.L3edgeXAFSwasusedtodeterminethedifferenceofthelocalstructurearundNd^3+ionandtheelectricalstructurebetweenthenanocystallineNd2O3andthecoarsebulkmicrocrystallineNd2O3.ItwasfoundthatNd-Odistanceincreasedwiththeformofnanocrystalliteandtheintensityofabsorptionedgealsoenhancedatthesametime.

简介：TheCasimireffecthasbeenstudiedforvariousquantumfieldsinbothfiatandcurvedspacetimes.Asafurtherstepalongthisline,weprovideanexplicitderivationofCasimireffectformasslessspin-3/2fieldwithperiodicboundaryconditionimposedinfour-dimensionalMinkowskispacetime.ThecorrespondingresultswithDirichletandNeurnannboundaryconditionsarealsodiscussed.

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简介：Atopologymethodispresentedinthispapertorevealflowtructureoccurringinsieturbomachinery,inwhichnearwallflowstructureisrevealedbyusingwalllimitingstreamilinesandspaceflowfeatureisrevealedbyusingspacestreamilinesandcross-sectionstreamlines,Asanexample,acomputationalthree-dimensionalviscousflowfieldinsideatransonicturbinecascadeisstudied.Throughtheanalysis,theformandevolutionofvortexsystemandthewholeprocessofseparationoccurringwithinthiscascadearerevealed.Theapplicationoftopologymethodforanalyzeflowstructureinsideturbomachinmeryisveryimportantforunderstandingflowfeaturesandmechanismofflowlossevenforimprovingthedesignofturbomachineryandincreasingitsefficiency.

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