简介：联合同轴的共鸣器的现象的模式的研究与理论被进行了。通过建立没有来源的传播线方程，有一个弄皱的内部售票员的同轴的共鸣器的边界条件被分析。最后，计算为Karlsruhe工学院(工具包)的共鸣器在大量折皱参数被执行相关同轴的振动陀螺仪。

简介：以便完成更高光谱效率，在很少模式纤维的模式部门multiplexing(MDM)是一个新研究区域。这个想法包括联合限制系统的可完成的长度的intermodal延期和模式面对大量技术问题。这篇论文被指定在步索引很少模式纤维完成intermodal延期的分析。我们数字地分析纤维的所有参数，它能在很少模式纤维影响intermodal延期并且识别没有最大的intermodal延期的重要增加，能增加复合模式的数字的条件。

简介：Withtherapidprogressofcomponenttechnology,thesoftwaredevelopmentmethodologyofgatheringalargenumberofcomponentsfordesigningcomplexsoftwaresystemshasmatured.But,howtoassesstheapplicationreliabilityaccuratelywiththeinformationofsystemarchitectureandthecomponentsreliabilitiestogetherhasbecomeaknottyproblem.Inthispaper,thedefectsinformaldescriptionofsoftwarearchitectureandthelimitationsinexistedmodelassumptionsarebothanalyzed.Moreover,anewsoftwarereliabilitymodelcalledComponentInteractionMode(CIM)isproposed.Withthismodel,theproblemforexistedcomponent-basedsoftwarereliabilityanalysismodelsthatcannotdealwiththecasesofcomponentinteractionwithnon-failureindependentandnon-randomcontroltransitionisresolved.Atlast,thepracticeexamplesarepresentedtoillustratetheeffectivenessofthismodel.

简介：CellularNeuralNetworks(CNN)withfeedbackmodeandM×Ncellsareequivalenttoanetworkwhichpossesses2M×Ncells,aneighborhoodwithmirror-likestructure,space-varianttemplatesandwithoutfeedbackaswellaswithoutinputtemplates.ThestabilityoftheCNNwithfeedbackmodeandtransformationswiththeneighborhoodofmirror-likestructurearediscussed.

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简介：Ascanningnear-fieldopticalmicroscopeusinguncoatedfibertipisdescribed,whichcanworkintransmissionandreflectionconfigurations,bothcapableofworkinginilluminationandcollection-mode,sothateithertransparentoropaquesamplecanbeinvestigated.Dependingondifferentapplications,eitherconstant-gaporconstant-heightimagescanbeachieved.Acompacthomemadetranslatorpermitstoselectinterestedareaofsampleintherangeof4mm×4mm.Workingintheconstant-heightaswellastransmissionandcollection-modeconfiguration,severalkindsofsamplessuchasholographicgrating,liposomeandzeolitewereinvestigated.TheexperimentalresultsrevealedthedependenceoftheopticalresolutionoftheSNOMonthetip-sampleseparation.

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简介：DepletionmodeHEMTwithrefractorymetalsilicideWSigatehasbeende-signedandfabricated.Epicated.Epitaxialmodulationdopingmaterialsweregrownbyahome-madeMBEsystem.Thegatelengthandwidthforlownoisedepletiondeviceswere1.2～1.5μmand2×160μmrespectively.Theelectronmobilityofthefabricateddevicesistypically6080cm^2/V·sat300Kand68000cm^2/V·sat77K.Thesheetelectronconcentrationnsis9×10^11cm^-2，Thesource-draincontactswithAuGeNi/Auwerefabricatedusingevaporatingandlift-offtechnique.tofurtherreducethecontactresistance,thewaferalloyedat520℃for3mininthehydrogen(H2)gas.SchottkygatewasformedusingWSi.Thetranseon-ductanceofthedepletionmodedeviceis110～130mS/mmatroomtemperature,Thede-vicescanbeappliedincommunicationsatelliteatmicrowavefreqencyof3.83GHzandradarreceiverat1.5GHz.Itsnoisefigureisabout2～3dB.

简介：Aversatilecurrent-modebiquadraticfilterusingthreeoperationalamplifiersandninepassiveelementsisproposed.Bysuitablychoosingtheoutputbranch,lowpass,bandpass,highpass,bandstopandallpasstransferfunctionsarerealizedsimultaneouslywithoutchangingthecircuitconfigurationandelements.Twocircuits,oneisforlowfrequencyapplicationandtheotherforhighfrequency,areproposed.Thecenterfrequency,qualityfactorandgainconstantsofthecircuitcanbetunedindependently.Simulatedresultsshowthatthecircuitsworksuccessfully.

简介：Byapplyingswitch-signaltheory,thetheoryoftransmissioncurrent-switchesbasedonsymmetricternarylogicisproposed,thistheoryissuitabletodesignsymmetricternarycurrent-modeCMOScircuits.Thesymmetricternarycurrent-modeCMOScircuitsdesignedbyusingthistheorynotonlyhavesimplercircuitstructuresandcorrectlogicfunctions,butalsocanprocessbidirectionalsignals.

简介：我们报导在硅石切开耳语画廊模式的观察球形的共鸣器。描绘保险丝硅石球形的共鸣器，迅速凋落的纤维逐渐变细联合技术被采用。联合系统由纤维组成与大约2.8微米和保险丝硅石的一条直径逐渐变细有大约143微米的一条直径的球形的共鸣器。由把激光力量注入纤维逐渐变细，有3.7nm的相等的山峰间距的很多座狭窄的吸收山峰被观察在一宽光谱范围。在用形状由另一个代替共鸣器稍微被修改以后，耳语画廊模式在球形的共鸣器切开被观察。在邻近的山峰之间的波长间距是0.32nm，比以前的的小得多。CLC数字O431.2这projec被中国(60277026,90206039)的国家自然科学基础支持

简介：Basingonthestatevariablemethod,ablockdiagramofthecurrent-modebiquadactivecircuitwasproposed,whoseintegratorswererealizedusingthreekindsofactiveelementssuchasoperationalamplifier,secondgenerationcurrentconveyorsandoperationaltransconduc-tanceamplifiers-electriccapacity.Thecharacteristicsofeachcircuitwereanalyzed.

简介：Anewcycle-by-cyclecontrolflybackconverterwithprimarysidedetectionandpeakcurrentmodecontrolisproposedanditsdynamiccharacteristicsareanalyzed.TheflybackconverterisverifiedbytheOrCADsimulator.Themainadvantagesofthisconverterovertheconventionalonearesimplicity,smallsize,rapidregulatingandnosensingcontrolsignalsovertheisolationbarrier.Thecircuitissuitablefordigitalcontrolimplementations.

简介：在这份报纸，multimode波导长度和产量移植SOI(绝缘体上的硅)的地点基于材料1脳4MMI(multimode干扰)光splitter借助于FD-BPM(有限差别鈥?横梁繁殖方法)被优化。一改进了1脳4MMI光splitter被设计。与平常的光splitter相比，更小的损失0。12dB和更好的输出端口力量一致性0.11dB为光信号传播被完成。

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简介：Wetheoreticallyproposethestructureofall-solidphotonicbandgapfibertosupportLP01modeat980nmandfourmodesofLP01,LP11,LP02andLP21atCbands.Weresearchcharacteristicsofthephotonicbandgabandapplypho-tonicfiberasgainmediumtofiberlasers,finallyrealizingseparateamplificationofLP11andLP21high-ordermodeswithsingle-modestablepumplightofLP01modeat980nm.Besides,werealizeLPllmodeandLP21modelaserout-putofdual-wavelength.

简介：WeproposeaBPNNbasedadaptiveslidingmodecontrolschemeforspeedtrackingofaDCmotorwithunknownsystemnonlinearities.Theinput-outputlinearizationtechniqueisusedtocancelthenonlinearities,andoutputoftheBPNNisincorporatedintothecontrollerintheproposedscheme.ItisshownthattherotorspeedofaDCmotorcanfollowanyarbitrarilyselectedtrajectoriesundervariableloadtorque.Thentheapplicationoftheapproachistestedviacomesimulations.

简介：Anovelandefficientmethodfordecomposingasignalintoasetofintrinsicmodefunctions(IMFs)andatrendisproposed.Unliketheoriginalempiricalmodedecomposition(EMD),whichusessplinefitstoextractvariationsfromthesignalbyseparatingthelocalmeanfromthefluctuationsinthedecomposingprocess,thisnewmethodbeingproposedtakesadvantageofthetheoryofvariablefiniteimpulseresponse(FIR)filteringwherefiltercoefficientsandbreakpointfrequenciescanbeadjustedtotrackanypeak-to-peaktimescalechanges.TheIMFsateresultsofamultiplevariablefrequencyresponseFIRfilteringwhensignalspassthroughthefilters.Numericalex-amplesvalidatethatincontrastwiththeoriginalEMD,theproposedmethodcanfine-tunethefrequencyresolutionandsuppressthealiasingeffectively.

简介：Anovelcontrolschemeispresentedbyusingsliding-modecontrolforboostconverteroperatingincontinuousconductionmode(CCM).Althoughthenon-idealswitchingconditionandphysicalconstraintofthecontrolareconsideredonthebaseofequivalentcontrol,theschemeisstillsimple.Bymodifyingthesliding-modcerrorsineachswitchingperiod,thesteady-stateerrorsandchatteringcanbesubstantiallyreduced.Simulationresultsconfirmthetheoreticalanalysisandshowtheimprovementoftheconverter’sstart-upbehaviorandlowsensitivitytoexternalperturbation.

简介：Theproblemofrobustifyinglinearquadraticregulators(LQRs)foraclassofuncertainaffinenonlinearsystemsisconsidered.First,theexactlinearizationtechniqueisusedtotransformanuncertainnonlinearsystemintoalinearoneandanoptimalLQRisdesignedforthecorrespondingnominalsystem.Then,basedontheintegralslidingmode,adesignapproachtorobustifyingtheoptimalregulatorisstudied.Asaresult,thesystemexhibitsglobalrobustnesstouncertaintiesandtheidealslidingmodedynamicsisthesameasthatoftheoptimalLQRforthenominalsystem.Aglobalrobustoptimalslidingmodecontrol(GROSMC)isrealized.Finally,anumericalsimulationisdemonstratedtoshowtheeffectivenessandsuperiorityoftheproposedalgorithmcomparedwiththeconventionaloptimalLQR.