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简介：

简介：一条高效轨道和抓住(T/H)电路设计因为高分辨率的高速度的analog-to-digital变换器(模数转换器)被介绍，它在0.18m互补金属氧化物半导体过程被实现了。一改善自举，切换体积的技术被介绍极大地在宽带宽，和增加上最小化采样网络的非线性一修改预先控告减少全部的电源消费的电路帮助。试验性的结果证明建议T/H电路以100MHz采样率完成超过77dBSFDR(假免费的动态范围)和70dBTHD(全部的泛音失真)并且当消费47mW电源时，与输入频率维持性能直到305MHz。

简介：嗨,朋友,想和我一起去吃"HighTea"吗?什么?"高茶"?这是什么意思?意思是茶被放在很高的桌子上吗?哈哈,不是的。它和"下午茶"的意思十分相近。我只是想和你去吃些点心!

简介：剪下页面左下角的奶牛，使其翻过山顶，到达山下的挤奶棚。按照Twinkle，TwinkleLittleStar的曲调演唱这首歌。移动奶牛，沿着花朵翻越山顶，使奶牛到达山下的挤奶棚。上山时，音调逐渐升高；下山时，音调逐渐降低。

简介：电话不通小high总喜欢在别人面前炫耀自己认识很多名人，一天早上，他看到阿拉雷正走向自己的办公室，立即拿起电话。“是的，您早！特地打电话给我实在不敢当。什么？今天吗？很抱歉，我今天跟大使有约了，改天我们再约好吗？非常抱歉！”

简介：ThistalkwillsummarizetherecentworkrelatedtoakindofnewnanomaterialsproducedbytheSMAT(surfacemechanicalattritiontreatment).Theconceptofsurfacenanocrystallizationofmaterialswillbepresented.Intermsofthegrainrefinementmechanisminducedbyplasticdeformation,anovelsurfacemechanicalattrition(SMA)techniquewasdevelopedforsynthesizingananostructuredsurfacelayeronmetallicmaterialsinordertoupgradetheoverallpropertiesandperformance.ThegrainrefinementmechanismofthesurfacelayerduringtheSMAtreatmentwillbeanalyzedintermsofthenanostructureobservationsinseveraltypicalmaterials.Veryhighyieldstress(5timesofthebasematerial)onthesurfacelayerofthematerialobtainedbytheSMAThasbeenobserved.Theeffectofsurfacenanostructuresonthemechanicalbehaviorandonthefailuremechanismofmetallicmaterialshowsthepossibilitytodevelopanewstrengthgradientcompositeusingco-rollingandnitriding.Theroleofresidualstressinducedduringthetreatmentwillbeinvestigatedanddiscussed.Thedevelopedmaterialsarealsoporosityfreematerialswhichcanbeusedasreferencematerialforthelocalmechanicalbehaviorinvestigationtechniquesuchasthenanoindentation.Ageneralconceptforobtaininghighstrengthandhighductilitynanostructuredmaterialswillbepresented.Theexceptionalhighstrengthandhighductilitysteelshavedeveloped.Thesimulationofthemechanismsforimprovingductilityofhighstrengthnanostructuredmaterialswillbepresented.Thepotentialapplicationsforthelandtransportationvehicles(car,bus,train)andwindenergyhavebeeninvestigated.Someexamplesofconceptdesignfortheintegrationoftheadvancednanostructuredsteelswillbepresented.

简介：ASchwarzschildmicroscopewithanumericalapertureof0.2andamagnificationof130ina100μmfieldofview(FOV)isdesignedandisworkingat13.5nm.Meanwhile,aCCDisusedasadetectorwithapixelsizeof13μm×13μmandimagingareaof13mm×13mm.Theimagingqualitywithtolerancesofsystemanderrorsofmirrorsareconsidered.Weobtainthatthebeston-axesobjectresolutioncanbeuptoabout200nm,theaveragevalueis230nm,andtheresolutionisabout360nmat80μmFOV.

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简介：

简介：Theabilitytomove10sofTeraBytesinreasonableamountsoftimearecriticaltomanyoftheHighEnergyPhysicsapplications.Thispaperexaminestheissuesofhighperformance,highreliabilitytapestoragesystems,andpresentstheresultsofa2-yearASCIPathForwardprogramtobeabletoreliablymove1GB/stoanarchivethatcanlast20years.Thispaperwillcovertherequirements.approach,hardware,applicationsoftware,interfacedescriptions,performance,measuredreliabilityandpredictedreliability.Thispaperwillalsotouchonfuturedirectionsforthisresearch.Thecurrentresearchallowssystemstosustain80MB/sofuncompressabledataperFibreChannelinterfacewhichisstripedoutto8ormoredrives.Thislookstotheapplicationasasingletapedrivefrombothmoutanddatatransferperspectives.Striping12RAITsystemstogetherwillprovidenearly1GB/stotape.Thereliabilityisprovidedbyamethodofaddingparitytapestothedatastripes.Forexample,adding2paritytapestoan8-stripegroupwillallowany2ofthe10tapestobelostordamagedwithoutlossofinformation.ThereliabilityofRAITwith8stripesand2paritiesexceedsthatofmirroredtapeswhileRAITuses10tapesinsteadofthe16tapesthatamirrorwouldrequire.TheresultsofthispaperistobeabloetounderstandtheapplicabilityofRAITandtobeabletounderstandwhenitmaybeusefulinHighEnergyPhysicsapplications.

简介：ThispaperintroducesthedefinitionoftheOrthogonalTypeNodeConfigurationanddiscussesthecorrespondingmultivariateLagrange,HermiteandBirkhoffinterpolationproblemsinhighdimensionalspaceRs(s＞2).ThisnodeconfigurationcanbeconsideredtobeakindofextensionoftheCrossTypeNodeConfiguration[1],[2]inR2tohighdimensionalspaces.AndtheMixedTypeNodeConfigurationinRs(s＞2)isalsodiscussedinthispaperinanexample.

简介：Thereisawidespreadinterestinleadtelluride(PbTe)asagoodthermoelectricmaterial.WereportthetemperaturedependenceofthermopowerS(T)andresistanceR(T)forPbTeatthedifferentpressuresoffrom1.8GPato5GPaobtainedbyusingthecubicanvilhighpressureapparatus.Withincreasingpressure,R(T)andS(T)decrease.TheeffectofpressureonR(T)islargerthanthatonS(T).Thepowerfactorthatisdeterminedbythermopowerandresistivityincreaseswithincreasingpressure.Thismethodisanefficienttoolforsynthesizinggoodthermoelectricmaterialsathighpressureandhightemperature.

简介：Thispaperpresentsaflexibleandhighspeeddigitalscanconverter(DSC)withtheabilitytohandlehighfrequencyultrasoundimaginginreal-time.Thecharacteristicsinimagingsystemsuchasfocuslengthoftransducer,theswingradiusandsamplinglengthetc.couldbechangedeasilyincompliancewiththeresearcher'sapplicationbasedonthisflexibledigitalscanconverter.Linearinterpolationisemployedtoachievethecoordinatetransformationsalgorithm.Custom-builtsoftwareisprogrammedtopreliminarilyhandlethealgorithmaccordingtodifferentultrasoundimagingapplications.HighperformanceFPGAwillimplementhighspeedinterpolationcalculationbasedonthepreliminarydatawhicharestoredintheDDR2SDRAMfromthesoftware.64bit66MHzPCIisemployedtoaccomplishhighspeeddatatransmission.Experimenthasshownthatmorethan500frameratecouldbeachievedbasedonthishighspeeddigitalscanconverter.ThedesignedflexibleandhighspeeddigitalscanconvertercouldbeusedincurrentFPGAbasedhighfrequencyultrasoundimagingsystem.

简介：Propagationpropertiesofhigh-powerfiberlaserwithhigh-order-mode(HOM)contentarestudiednumericallyforthefirsttimetothebestofourknowledge.TheeffectofHOMonthepropagationpropertyisevaluatedbythepowerinthebucket(PIB)metric.ItisshownthatPIBismainlydependentonHOMcontentratherthantherelativephasebetweenthefundamentalmodeandHOM.ThePIBinvacuumismorethan80%whenthepowerfractionoftheHOMiscontrolledtobelessthan50%at5km.Therelativephasehasanimpactonthepeakintensitypositionandconcentrationofthefar-fieldintensitydistribution.Ifanadaptiveopticssystemisusedtocorrectthepeakintensitydeviation,theresultsindicatethatthereexistsamaximalvalueofPIBasrelativephaseincreases.Sucheffectisweakenedwhenpropagatinginturbulence.ComparedtothelaserbeamswithoutHOM,laserbeamswithHOMcontentarelessinfluencedbytheturbulenceandcanreduceaverageintensityfluctuation.Theresultsmaybeusefulinthedesignofahigh-powerfiberlasersystem.

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简介：Anovellowpowerandlowvoltagecurrentmirrorwithaverylowcurrentcopyerrorispresentedandtheprincipleofitsoperationisdiscussed.Inthiscircuit,thegainboostingregulatedcascodeschemeisusedtoimprovetheoutputresistance,whileusinginverterasanamplifier.ThesimulationresultswithHSPICEinTSMC0.18umCMOStechnologyaregiven,whichverifythehighperformanceoftheproposedstructure.Simulationresultsshowaninputresistanceof0.014Ωandanoutputresistanceof3GΩ.Thecurrentcopyerrorisfavorableaslowas0.002%togetherwithaninput(theminimuminputvoltageofvin,min~0.24V)andanoutput(theminimumoutputvoltageofvout,min~0.16V)complianceswhileworkingwiththe1Vpowersupplyandthe50uAinputcurrent.Thecurrentcopyerrorisnearzeroattheinputcurrentof27uA.Itconsumesonly76uWandintroducesaverylowoutputoffsetcurrentof50pA.

简介：Activatedcarbon(AC)wasfabricatedfromcorncob,whichischeapandabundant.Experimentalparameterssuchasparticlesizeofcorncob,KOH/charweightratio,andactivationtemperatureandtimewereoptimizedtogenerateAC,whichshowshighmethanesorptioncapacity.AChashighspecificsurfacearea(3227m2/g),withporevolumeandporesizedistributionequalto1.829cm3/gandca.1.7-2.2nm,respectively.Undertheconditionof2℃andlessthan7.8MPa,methanesorptioninthepresenceofwater(Rw=1.4)wasashighas43.7wt%methaneperunitmassofdryAC.Theresultissignificantlyhigherthanthoseofcoconut-derivedAC(32wt%)andorderedmesoporouscarbon(41.2wt%,Rw=4.07)underthesamecondition.ThephysicalpropertiesandamorphouschaoticstructureofACwerecharacterizedbyN2adsorptionisotherms,XRD,SEMandHRTEM.Hence,thecorncob-derivedACcanbeconsideredasacompetitivemethane-storagematerialforvehicles,whicharerunbynaturalgas.

简介：对数的反应互补金属氧化物半导体(互补金属氧化物半导体)图象传感器提供一个宽动态范围，但是它的缺点是简单固定模式噪音(FPN)的缺乏取消计划。设计与高有活力的范围和高输出秋千是一个新奇对数的活跃象素传感器(APS)。第一，混合模型APS的操作原则被介绍。象素能由选择合适的控制信号在三个操作模式工作。然后，对数的APS的FPN来源被分析，并且双sampled技术被实现减少FPN。根据模拟结果，最后，布局被设计并且过去了设计统治支票(DRC)，电子规则检查(ERC)和布局对图解(LVS)确认，和模拟以后的结果是基本上与模拟结果一致。新对数的APS的动态范围能到达大约140dB；并且产量秋千是大约750mV。结果证明由使用两倍取样的技术，大多数FPN被消除，动态范围被提高。

简介：Byusinganine-levelatmosphericgeneralcirculationmodeldevelopedattheInstituteofAtmosphericPhysics(IAP9LAGCM),twosetsofnumericalexperimentsarecarriedouttoinvestigatetheinfluenceoftheMascarenehigh(MH)andAustralianhigh(AH)overthesouthernsubtropicsupontheEastAsiansummermonsooncirculationandsummerprecipitationinEastAsia.Theuseofensemblestatisticsisadoptedtoreducethesimulationerrors.TheresultshowsthatwiththeintensificationofMH,theSomalilow-leveljetissignificantlyenhancedtogetherwiththesummermonsooncirculationinthetropicalAsiaandwesternPacificregion.Furthermore,theanticyclonicanomalyinthetropicalwesternPacifictotheeastofthePhilippinesmayinduceaweakEast-Asia-Pacificteleconnectionpattern.Inthemeantime,geopotentialheightintheTropicsisenhancedwhileitisreducedovermostregionsofmid-highlatitudes,thusthenorthwesternPacificsubtropicalhighat500hPaextendssouthwestward,resultinginmorerainfallinsouthernChinaandlessrainfallinnorthernChina.AsimilaranomalypatternoftheatmosphericcirculationsystemsisfoundintheexperimentoftheintensificationofAH.Ontheotherhand,becausethecross-equatorialcurrentsassociatedwithAHaremuchweakerthantheSomalijet,theanomalymagnitudecausedbytiheintensificationofAHisgenerallyweak,andtheinfluenceofAHonsummerrainfallinChinaseemstobelocalizedinsouthernChina.ComparisonbetweenthetwosetsofexperimentsindicatesthatMHplaysacrucialroleintheinteractionsofgeneralatmosphericcirculationbetweenthetwohemispheres.