简介：Weinvestigatethenonlineardynamicsofmulti-dimensionalopticalpulsespropagatinginanisotropicselfdefocusingmedium,Usingamethodofmultiple-scalesweshowthatthenonlinearevolutionofthepulsesisgovernedbyDavey-Stewartsonequations.Dromion-likenonlinearlocalizedstructures(high-dimensionalOpticalsolitons)excitedfromacontinuouswavebadckgroundanddecayinginallspatialdirectionsarepredictedthroughtheinteractionbetweenawavepacketsuperposedbyshort-wavelengthcomponentsandalong-wavelengthmeanfieldgeneratedbyanopticalrectification.

简介：在这篇论文，在波色子费米子的集体刺激借助于功能的集成方法为reinvestigated建模。精力的方程豁开，刺激光谱被导出。而且，零个波浪向量费密领域的Bose精力光谱也被计算。

简介：

简介：这篇论文处理我击碎的模式在用精细的数字moiré技术的飞机压力状况下面的一张击碎的橡胶表的问题。通过四步自动化穗分析的转移阶段的方法，在笛卡儿的坐标系统的排水量地被给。由并列变换的方程，在极的坐标系统的光线、圆形的排水量分布被获得。裂缝尖端附近的排水量isoline分布和排水量向量分布被讨论。裂缝尖端附近的紧张isoline分布也在这篇论文被分析。最后，分发近为机械地裁定裂缝尖端与部门部门方法被讨论。

简介：Inthispaper,weinvestigateexcitedcharacteristicoftheweaklyinteractingquasi-one-dimensional(1D)andquasi-two-dimensional(2D)Bose–Einsteincondensation(BEC)inharmonicpotentialtrap.Theenergyspectrumandtheanalyticalexpressionofthesoundvelocityareobtainedandanalyzed.Comparedwith3-DimensionalhomogeneousBose-condensedgasoccasion,thesoundvelocityof2DBose-Einsteincondensationinharmonicpotentialtrapissmaller.

简介：Aconvenientanduniversalresiduecalculusmethodisproposedtostudythestochasticresponsebehaviorsofanaxiallymovingviscoelasticbeamwithrandomnoiseexcitationsandfractionalorderconstitutiverelationship,wheretherandomexcitationcanbedecomposedasanonstationarystochasticprocess,Mittag-Lefflerinternalnoise,andexternalstationarynoiseexcitation.Then,basedontheLaplacetransformapproach,wederivedthemeanvaluefunction,variancefunctionandcovariancefunctionthroughtheGreen'sfunctiontechniqueandtheresiduecalculusmethod,andobtainedtheoreticalresults.Insomespecialcaseoffractionalorderderivativeα,theMonteCarloapproachanderrorfunctionresultswereappliedtochecktheeffectivenessoftheanalyticalresults,andgoodagreementwasfound.Finallyinageneral-purposecase,wealsoconfirmedtheanalyticalconclusionviathedirectMonteCarlosimulation.

简介：有一个单程的离合器的一个带开车系统的稳定的不变的周期的回答被学习。第一次，动态系统在双刺激下面被调查。系统被引擎的开火的跳动和基础的泛音运动同时激动。非线性的discretecontinuous方程为联合带跨度的横向的颤动和开车的旋转被导出并且驾驶滑轮和附件滑轮。非线性的动力学在在开火的跳动的频率和基础运动的频率之间的相等、多重的关系下面被学习。而且，翻译带跨度作为移动绳的向轴的方向被建模。一套非线性的piecewise平常的微分方程被使用Galerkin截断完成。在在刺激频率之间的各种各样的关系下面，动态系统的时间历史数字地基于时间discretization方法被模仿。而且，稳定的不变的周期的反应曲线基于频率被计算扫。而且，Galerkin截断的集中被检验。数字结果证明单程的离合器减少驾驶滑轮和附件滑轮的旋转的回声振幅。在另一方面，数字例子证明带跨度的回声区域被消除减少在相反的方向播送转矩。与基础刺激的增加的振幅，单程的离合器的抑制效果将被减少。作为引擎增加的开火的跳动的振幅，而且，在带开车系统与或没有一个单程的离合器的不变的反应曲线的跳的现象两个都发生。

简介：MultipleresonantexcitationsofsurfaceplasmonsinagraphenestratifiedslabarerealizedbyOttoconfigurationatterahertzfrequencies.Theproposedgraphenestratifiedslabconsistsofalternatingdielectriclayersandgraphenesheets,andissandwichedbetweenaprismandanothersemi-infinitemedium.Opticalresponseandfielddistributionaredeterminedbythetransfermatrixmethodwiththesurfacecurrentdensityboundarycondition.Multipleresonantexcitationsappearontheangularreflectionspectrum,andareanalyzedtheoreticallyviathephase-matchingcondition.Furthermore,theeffectsofthesystemparametersareinvestigated.Amongthem,theFermilevelscantunethecorrespondingresonancesindependently.Theproposedconceptcanbeengineeredforpromisingapplications,includingangularselectiveormultiplexfilters,multiplechannelsensors,anddirectionaldeliveryofenergy.

简介：Inaself-consistentmean-fieldtreatmentofthetwo-dimensionalt-t'-Jmodel,wetheoreticallyexaminethecouplingofin-planequasi-particlestotheantiferromagneticspinfluctuationsinhigh-Tcsuperconductors,whichrenormalizesthefermionicself-energy.Wereproducethecharacteristicpeak-dip-humpstructureobservednotonlyinangly-resolvedphotoemissionspectroscopy,butalsoinsuperconductor-insulator-normalmetalunctionsandscanningtunnellingmicroscopyexperiments.Weconsidertheevolutionofthisstructurewithdoping.Itisshownthatthiskindofcouplingcanaccountformanyanomalouspropertiesofhigh-Tcsuperconductorsinsuperconductingstates.

简介：用特殊Painleve-Baecklund转变以及扩大印射的途径和线性重叠定理，我们获得的可变分离答案的新家庭(2+1)维的概括Broer-Kaup(GBK)系统。基于导出的准确答案，我们揭示局部性的刺激的一些新奇进化行为，即分裂和熔化现象在(2+1)维的GBK系统。

简介：Thepseudoexcitationmethod(PEM)hasbeenimprovedintoamorepracticalform,onwhichtheanalyticformulaeofseismicresponsepowerspectraldensity(PSD)ofsimplifiedlarge-spanstructuralmodelshavebeenderived.TheanalyticformulaeandnumericalcomputingresultsofseismicresponsePSDhavebeenderivedtostudythemechanismofmulti-supportexcitationeffects,suchasthewave-passageeffectandincoherenceeffect,fortheseismicresponseofmultiandlarge-spanstructures.Byusingamulti-spantrussasanexample,theinfluenceofmulti-supportexcitationeffectsontheseismicresponseofsuchstructuresisstudied.

简介：Themainintentionofthepresentstudyistoreducewind,wave,andseismicinducedvibrationsofjackettypeoffshorewindturbines(JOWTs)throughanewlydevelopedvibrationabsorber,calledtunedliquidcolumngasdamper(TLCGD).UsingaSimulink-basedmodel,ananalyticalmodelisdevelopedtosimulateglobalbehaviorofJOWTsunderdifferentdynamicexcitations.ThestudyisfollowedbyaparametricstudytoexploreefficiencyoftheTLCGDintermsofnacelleaccelerationreductionunderwind,wave,andearthquakeloads.StudyresultsindicatethatoptimumfrequencyoftheTLCGDisratherinsensitivetoexcitationtype.Inaddition,whilethegaininvibrationcontrolfromTLCGDswithhighermassratiosisgenerallymorepronounced,heavyTLCGDsaremoresensitivetotheirtunedfrequencysuchthatill-regulatedTLCGDwithhighmassratiocanleadtodestructiveresults.ItisrevealedthatawellregulatedTLCGDhasnoticeablecontributiontothedynamicresponseoftheJOWTunderanyexcitation.

简介：

简介：使用一个多级式的摆钟团的可能性更潮湿(MSPMD)部分地理论上被学习在建设期间控制一座留下来电缆线的桥的一个单个列塔的导致风的颤动我这个工作。在这篇论文，为减少桥塔颤动的MSPMD的表演试验性地被学习。一个MSPMD模型和有几何学可伸缩1:100的桥的一个塔模型被设计并且生产。有不同电线长度的MSPMD模型的刻度被进行验证分析模型更潮湿。为不受管束的独立的塔，有电报的塔，和与MSPMD模型一起的塔的一系列测试然后在泛音和白噪音刺激下面被执行。试验性的结果证明塔模型的回答显著地与MSPMD模型的安装减少，它表明MSPMD的有效性减轻桥塔的颤动。

简介：AdetailedstudyofthefluorescenceemissionpropertiesandenergytransfermechanisminEr3+/Tm3+co-dopedleadsilicateglasseswasreported.Enhancednearinfrared1.8μmandvisibleup-conversionemissionswereinvestigatedunder808and980nmexcitations,respectively.TheenergytransfermechanismbetweenEr3+andTm3+wasanalyzedaccordingtotheabsorptionspectra,theemissionspectraandthelevelstructuresofEr3+andTm3+.TheenergytransferefficiencybetweenEr3+andTm3+reached68.1%intheEr3+/Tm3+co-dopedleadsilicateglasseswhenpumpedby808nmlaserdiode.Basedontheabsorptionspectra,theJudd-Ofeltparameters,spontaneousemissionprobability,absorptionandemissioncrosssections,gaincoefficientswerecalculatedandanalyzed.Itwasfoundthatthecalculatedemissioncrosssectionandthemaximumgaincoefficientaround1.8μmwere4.9×10–21cm2and1.12cm–1,respectively.TheseresultsindicatedthattheEr3+/Tm3+co-dopedlead-silicateglasseshadpotentialapplicationinnearinfraredlasers.