简介：Inthispapertheresultsofahigh-speedtensionexperimentoftheSiC_w/Alcompositehavebeenreportedandasimplifiedtheoreticalmodelhasbeendevelopedtostudythefracturemechanismofcompositesinhigh-speedtension.Thistheoreticalmodelprovidesanewexplanationfortheincreaseofdynamicfracturestrengthofcompositesinhigh-speedtension.

简介：Withtherapiddevelopmentofdeepsubmicron(DSM)VLSIcircuitdesigns,manyissuessuchastimeclosureandpowerconsumptionaremakingthephysicaldesignsmoreandmorechallenging.InthisreviewpaperweprovidereaderswithsomerecentprogressoftheVLSIphysicaldesigns.Therecentdevelopmentsoffloorplanningandplacement,interconnecteffects,modelinganddelay,bufferinsertionandwiresizing,circuitorderreduction,powergridanalysis,parasiticextraction,andclocksignaldistributionarebrieflyreviewed.

简介：Thenon-lineardynamicmodelissetupofonetypeofhigh-speedpaintingautomizorwithgassupportingsystem.Thestabilityofmotionanddynamicresponseofthegaspaintingautomizorsystemarestudiedoverarelativelywiderangeofrotatingspeedbynumericalanalyticmethod,thecriticalvelocityunderworkingconditionisfound,androtatestabilityandcriticalconditionarediscussedintheory.Furthermore,therangeofthecriticalparameterofthesystemwhenHopfbifurcationoccursandthelawbetweenaxistraceandbearingclearanceareacquired,too.

简介：Inthispaper,astudyofthehigh-speedgasjetofarocketnozzleunderwaterwascarriedoutusingcommerciallyavailableCFDsoftwareFLUENTwithit'suser-defined-function.Thevolumeoffluidtechniquebasedonfinitevolumemethodwasadoptedtosolvethetime-dependentmultiphaseflowincludingacompressiblephase,andthePISOalgorithmwasincluded.Thecomputedresultsshowthatthisproblemwascalculatedsuccessfully.Thegasbubblebehindthenozzle,andthewavestructureexistinginhighlycompressedgasinwaterwerecapturedaccurately.

简介：在高速度的电路的域里，包含的混合电路网络的分析两个都散布了参数元素和lumped参数元素变得曾经重要。这篇论文为分析混合电路网络论述一个新方法。它补充说到古典修改节的途径和罐头的电路变量的传播线结束水流直接被用于混合电路网络。没有要求去耦，我们也介绍一种频率域技术因为多售票员传播排队。二个方法一起被联合高效地分析包含一致、不一致的、andfrequency依赖的传播线的高速度的电路网络。数字实验被介绍，结果与由PSPICE计算了那相比。

简介：水泡的行为上的可视化研究为水池在压力0.1MPa在一个水平透明加热器上沸腾R141b被执行了。水泡的行为被在加热器表面下面放的一个高速度的照相机记录。离开直径，水泡的离开时间和在不同的热流动的成核地点密度被获得。可视化结果证明水泡离开直径和离开时间减少，当当热流动增加，成核地点密度增加时。没有液体，在实验招募进microlayer，这也被观察。基于试验性的结果，煮曲线因为R141b被使用动态microlayer模型预言。作为结果，在基于动态microlayer，为沸腾的模型和实验数据R141b弄弯的预兆的结果之间的协议擅长高热流动。关键词R141b-热转移-水泡动力学-水池沸腾CLC数字TK124

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简介：Thereisatradeoffbetweenthequantumefficiencyandthespectralresponselinewidthinresonant-cavityenhanced(RCE)photodetectors.Recentlyanewtypeofphotodetectorstructurehasbeenproposed,whichutilizesaninclinedmirrorinathree-mirrorcavity.Itdecouplesthequantumefficiencyandthespectralresponselinewidthandhashighresponsespeed,highquantumefficiency,andnarrowlinewidthsimultaneously.Theanalysisresultindicatesthatthelinewidthof0.8nmandquantumefficiencyhigherthan70%canbeachievedonthisdevice.Fora30×30μm2device,themaximumbandwidthapproaches23GHz.

简介：Anewapproach,basedonthewaveformrelaxationtechniqueandfastWalshtrans-form,ispresentedtoanalyzethecoupledloosytransmissionlines(CLTL)witharbitraryterminalnetworks.Thesimulationaccuracyofthenewmethodcanbegreatlyimproved,thedisadvantagewhichalwaysexistsinpreviousmethodscanbeavoidedandaconsiderablesavingintimeandmemoryofCPUisobtained.

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简介：Thepaperfirstdiscussesshortcomingsofclassicaladjacent-framedifference.Secondly,basedontheimageenergyandhighorderstatistic(HOS)theory,backgroundreconstructionconstraintsaresetup.Underthehelpofblock-processingtechnology,backgroundisreconstructedquickly.Finally,backgrounddifferenceisusedtodetectmotionregionsinsteadofadjacentframedifference.TheDSPbasedplatformtestsindicatethebackgroundcanberecoveredlosslesslyinaboutonesecond,andmovingregionsarenotinfluencedbymovingtargetspeeds.Thealgorithmhasimportantusagebothintheoryandapplications.

简介：Thepaperconcernswiththedesignphilosophy,feasibilitystudy,aswellassomepeculiarfeaturesofIWHRwatertunnelforcavitationresearch.Thehighlightsworth-mentioningarethemaximumvelocityof35m/sandReynoldsnumberof1×10~7aswellastheprovisionofaspeciallydesignedairresorber.

简介：Inthispaper,wepresentsimulationresultsofanelectroopticalvariableopticalattenuator(VOA)inte-gratedinsilicon-on-insulatorwaveguide.Thedeviceisfunctionallybasedonfreecarriersabsorptiontoachieveattenuation.Beampropagationmethod(BPM)andtwo-dimensionalsemiconductordevicesimu-lationtoolPISCES-Ⅱwereusedtoanalyzethedcandtransientcharacteristicsofthedevice.Thedevicehasaresponsetime(includingrisetimeandfalltime)lessthan200ns,muchfasterthanthethermoopticandmicro-electromechanicalsystems(MEMSs)basedVOAs.

简介：Thepurposeofthispaperistodevelopahighspeeddetectionschemeformovingand/orstationarypointtargetsinamultitargetenvironmentasregisteredinanIRimagesequence.Aniterativeapproximate3-Dlinesearchingalgorithmbaseduponthegeometricrepresentationoflines(fornon-maneuveringtargetsinspace)ina3-Dspaceisderived.Theconvergencyofthealgorithmisproved.Ananalysisisperformedofthetheoreticaldetectionperformanceofthealgorithm.ThestatisticalexperimentresultsshowhigheffectivenessandcomputationalefficiencyofthealgorithminthecaseoflowSNR.Theideamaybeemployedtosatisfythereal-timeprocessingrequirementofanIRsystem.

简介：Inthepresentpaper,anonlinearmulti“actuatordisk”modelisproposedtoanalyzethedynamicbehaviorofflowinstabilities,includingrotatingstallandsurge,inhighspeedmultistageaxialcompressors.Themodeldescribestheductflowfieldsusingtwodimensional,compressibleandunsteadyEulerequations,andaccountsfortheinfluencesofdownstreamplenumandthrottleinthesystemaswell.Itreplaceseachbladerowofmultistagecompressorewithadisk.Fornumericalcalculations,thetimemarchingprocedure,usingMacCormacktwostepsscheme,isused.Themainpuposeofthispaperistopredictthemechanismoftwodimensionalshortwavelengthrotatingstallinceptionandtheinterationbetweenbladerowsinhighspeedmultistagecompressors.Ithasbeendemonstratedthatthemodelhastheabilitytopredictthosephenomena,andtheresultsshowthatsomesystemparametershaveastrongeffectonthestallfeaturesaswell.Resultsforafivestagehighspeedcompressorareanalyzedindetail,andcomparisonwiththeexperimentaldatademonstratesthatthemodelandcalculatingresultsarereliable.

简介：Aschemeforall-fiberclockenhancementofnon-return-to-zero(NRZ)databasedoncross-phasemodulation(XPM)effectinnonlinearfibersisproposedanddemonstratedinsimulation.Thesimulationresultsindicatethattheclock-to-dataratioofNRZsignalsat64Gb/scanbeincreasedto22.94dBbyusingthisscheme,andthepatterneffectinclockenhancedsignalsisveryweak.Theabilityofhighspeedoperationupto140Gb/softhisschemeisalsoprovedinoursimulation.

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简介：在水下目标识别是在声学的面对的一种关键技术并且在水下防卫。在这篇文章，一个识别系统基于模糊逻辑推理(可播放的动画文件)被建立。这个系统主要由三部分组成：模糊输入模块，有一套推理规则的模糊逻辑推理模块和de模糊的产量模块。Theinference结果证明识别系统处于大多数条件是有效的。

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简介：OnthebasisOftheYoung-LaplaceEquationthatdescribesthepressuredifferencebetweeneachsideofacurvedliquidsurface,astaticequilibriummodelisestablishedtodescribethesurfaceshapeoftheweldbead.Thegeo-metricalmodelforthemoltenpoolisincluded,whichisessentialtoexplaintheundercutphenomenonduringhighspeedbead-on-platewelding.Theresultsgotfromaniterationalgorithmshowthatitistheforcebalanceontheliquidmixtureofthedepositedmetalandthedepositedmetalandthemoltenbasemetalandthemoltenbasemetalthatcausestheundercut.Somefactorsandtheireffectsarealsoana-lyzed.