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简介：WeproposetwokindsofnewJaynesCummingsmodelsrelatingtotwo-photonprocessbyusingthesupersymmetricunitarytransformation.Thecorrespondingenergyeigenvaluesandeigenvectorsareobtained.

简介：Inthispaper,basedontheequationspresentedin[2],thehead-oncollisionbetweentwosolitarywavesdescribedbythemodifiedKdVequation(themKdVequation,forshort)isinvestigatedbyusingthereductiveperturbationmethodcombinedwiththePLKmethod.Thesewavespropagateattheinterfaceofatwo-fluidsystem,inwhichthedensityratioofthetwofluidsequalsthesquareofthedepthratioofthefluids.Thesecondorderperturbationsolutionisobtained.Itisfoundthatinthecaseofdisregardingthenonuniformphaseshift,thesolitarywavespreservetheiroriginalprofilesaftercollision,whichagreeswithFornbergandWhitham’snumericalresultofovertakingcollision161whereasafterconsideringthenonuniformphaseshift,thewaveprofilesmaydeformaftercollision.

简介：Basedonthecouplingoftwodistantthree-levelatomsintwoseparateopticalcavitiesconnectedwithtwoopticalfibres,schemesonthegenerationofseveraltwo-qubitlogicgatesarediscussedundertheconditionsof△=δ-2νcosπk/2g/2andν～g.Discussionandanalysisofthefidelity,gatetimeandexperimentalsetupsshowthatourschemesarefeasiblewithcurrentopticalcavity,atomictrapandopticalfibretechniques.Moreover,theatom-cavity-fibrecouplingcanbeusedtogenerateanN-qubitnonlocalentanglementandtransferquantuminformationamongNdistantatomsbyarrangingNatom-cavityassemblagesinalineandconnectingeachtwoadjacentcavitieswithtwoopticalfibres.

简介：Underinspirationfromthestructure-preservingpropertyofsymplecticdifferenceschemesforHamiltoniansystems,twohomogenizationconditionsforarepresentativeunitcelloftheperiodicalcompositesareproposed,oneconditionistheequivalenceofstrainenergy,andtheotheristhedeformationsimilarity.Basedonthesetwohomogenizationconditions,aneigenelementmethodispresented,whichischaracteristicofstructure-preservingproperty.Itfollowsfromthefrequencycomparisonsthattheeigenelementmethodismoreaccuratethanthestiffnessaveragemethodandthecomplianceaveragemethod.

简介：Thispaperpresentsanewboundaryintegralequatiònfortwo-dimensionalelasticitywiththestresscomponentσijtitjasoneoftheboundaryvalues,wheretiisthedirectioncosineofthetangentontheboundary.ThisformofBEMhasanadvantageinthatthestresscomponentσijtitjontheboundarycanbecalculateddirectlyfromthenumericalsolution.Thepresentformulationforplaneproblemsusestwokernels,theoneislogarithmicallysingularandtheotheris1/rsingular.Theeffectivenessoftheapproachisalsodiscussedthroughtestexamples.

简介：明确的表达以前由作者介绍了因为库仑积分被概括到另外的二中心的积分，除了交换积分。在这个框架以内，分子的积分与递归地评估的著名不完全的gamma功能和这些功能有关仔细以一些新功能被表示。在混合积分的情况中产生的特刊被处理，并且结果与在文学发现的相比。

简介：Thebehavioroftwocollinearanti-planeshearcracksinapiezoelectriclayerbondedtotwohalfspacesisinvestigatedbytheSchmidtmethod.Thecracksareverticallytotheimerfacesofthepiezoelectriclayer.ByusingtheFouriertransform,theproblemcanbesolvedwithtwopairsoftripleintegralequations.TheseequationsaresolvedusingtheSchmidtmethod.Thisprocessisquitedifferentfromthatadoptedpreviously.Numericalexamplesareprovidedtoshowtheeffectofthegeometryoftheinteractingcracksandthepiezoelectricconstantsofthematerialuponthestressintensityfactorofthecracks.

简介：Theanalysisoftheradiatednoiseofvesselsgiveninthispapershowssomestrongsuperposedlinecomponentsinlowfrequencyspeetrumbelow100Hzoccurringatdiscretefrequencieswhichcorrespondwiththerotationspeedofpropellershaft,orpropellerbladefrequency,ortheirharmonicfre-quencies.sincethelinecomponentsreflectpropeller＇workingcharacteristics,thepropller＇sfeaturescanbeextracteddirectlyfromlow-frequencylinecom-ponentsinadditiontodemodulatedlinecomponent.Sotherearetwowaystoextractthefeatures,oneisdirectway,theotherisdemodulationway.Detec-tionperformanceofthelinecomponentinbackground-noiseisdiscussedinthispaper.ThesignallevelisdefinedasthedifrerencebetweenthePDF＇s(ProbabilityDensityFunction)meanofthepeakofthelinecomponentandPDF＇smeanorthebackground-noise.Indircetwaythesignallevelofthelinecomponentisproportionaltothesignalnoiseratio(S/N).Indemodulationwaythesignallevelofdemodulatedlinecomponent

简介：AsetDofverticesofagraphG=(V,E)iscalledadominatingsetifeveryvertexofVnotinDisadjacenttoavertexofD.In1996,Reedprovedthateverygraphofordernwithminimumdegreeatleast3hasadominatingsetofcardinalityatmost3n/8.InthispaperwegeneralizeReed'sresult.WeshowthateverygraphGofordernwithminimumdegreeatleast2hasadominatingsetofcardinalityatmost(3n+|V_2|)/8,whereV_2denotesthesetofverticesofdegree2inG.Asanapplicationoftheaboveresult,weshowthatfork>1,thek-restricteddominationnumberr_k(G,y)<(3n+5k)/8forallgraphsofordernwithminimumdegreeatleast3.

简介：Letm,n,S1,S2,…,Sn,benon-negativeintegerswith0≤m≤n.Assumeμ（S1,S2,…,Sn）={（a1,a2,…,an）|0≤ai≤Siforeachi}isaposer,Where（a1,a2,…,an）<（b1,b2,…,bn）ifandonlyifai

简介：ThevalidityofNavier'spartialslipconditionisinvestigatedbystudyingtheoscillatoryflowinacoatedchannel.Thetwo-fluidmodelisusedtosolvetheunsteadyviscousequationsexactly.Partialslipisexperiencedbythecorefluid.ItisfoundthatNaviersconditiondoesnotholdforanunsteadycorefluid.

简介：ThispaperconstructsaclassofHarish-Chandramoduleswithmultiplicity＜-1ofthetwoparameterdeformationofVirasoroalgebraandprovesaclassificationtheorem.

简介：我们在场解决无洞的optomechanical系统的运动的方程并且当起始的状态是Gaussian时，获得发展状态的协变性矩阵的一个明确的公式的二个方法。我们开始处于真空状态学习这个系统的纠纷动力学。由两部组成的纠纷以一种周期的方式表现，这被显示出。特别地，我们能容易产生一件真三模式的连续变量的纠纷。[从作者抽象]

简介：有二个参数的动态系统的分叉性质在这份报纸被调查。设置的转变的定义被建议，并且开发的途径被用来与非线性的反馈控制器调查非线性的强迫的未击中的系统的动态特征。整个参量的飞机被转变集合划分成几个坚持的区域，然后在不同坚持的区域的分叉图被获得。关键词二个参数-分叉-单个分析工程被中国(10632040)的国家自然科学基础支持。

简介：一个计划为二面洞镜子为纠缠的状态的产生被介绍。在计划，开始处于一个真空状态的每面镜子与一块弱协调的地交往，导致一个光子数字依赖者踢。从洞漏的一个光子的察觉折叠二面镜子到一个纠缠的状态。

简介：为第二使用订Dini上面的方向性的衍生物的LC非强迫的优化问题介绍二个算法。方法的简洁使用并且表现；重复功能的相关性质的讨论。

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简介：二新chalcones，尾，2鈥?4鈥?5鈥?tetramethoxychalcone1，并且尾，2鈥?5鈥?trimethoxyfurano[4鈥?5鈥?3鈥?4鈥瞉-chalcone2从乙醇被获得Fordiacauliflora的茎的乙醇摘录的醋酸盐可溶的部分。他们的化学结构被分光镜的证据的分析决定。