简介：Basedon3DBiot’sconsolidationtheoryandnonlinearDuncan-Chang’smodel,a3DFEM(finiteelementmethod)programisdevelopedconsideringthecouplingofgroundwaterseepageandsoilskeletondeformationduringexcavation.Thecomparisonbetweentheanalysisresultconsideringthevariationofwaterheaddifferenceandthatwithoutconsideringitshowsthattheporewaterpressuredistributionoftheformerisdistinctlydifferentfromthatofthelatterandthatthefoundationpitde-formationsoftheformerarelargerthanthoseofthelatter,sothattheresultwithoutconsideringthevariationofwaterheaddif-ferenceisunreliable.Thedistributionrulesofsoilhorizontalandverticaldisplacementsaroundthepitandexcessporewaterpressureareanalyzedindetailintimeandspace,whichisverysignificantforguidingundergroundengineeringconstructionandensuringenvironmentsafetyaroundthepit.

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简介：让L是L上的一个分析的半组的无穷小的发电机[2]([n])与它的热核上的合适的上面的界限。假设L有围住的holomorphicL上的功能的演算[2]([n])。在这篇论文，我们定义与L联系在上的Littlewood-Paleyg功能[n]×[n]，由GL(f)表示了(x1，x2)，；定义区域功能，由SL(f)表示了(x1，x2)。用考尔德ón-Zygmund分解的一个珍视向量的版本，我们为1

简介：Thelargeareaplasticscintillatorfiber(BCF-12)iondetectorarrayismainlymadeof4×108fibers,2×108photo-transmittersand2×108photomultipliertubes.Thefiberwithsinglecladisabout111cmlonganditscrossseetionisasquarewhosesizeis5mm×5mm.Thefibersarearrayedperpendicularlytothedirectionoftheincidentbeam.Eachendsideofeveryfourpiecesoffiberisconnectedtoabendedphoto-transmitter

简介：LargedistributedsystemssuchasComputational/DataGridsrequirelargeamountsofdatatobeco-locatedwiththecomputingfacilitiesforprocessing.Fromourworkdevelogpinascalabledistributednetworkcache.wehavegainedexperiencewithtechniquesnecessarytoachievehighdatathroughputoverhighbandwidthWideAreaNetworks(WAN).Inthispaper,wediscussseveralhardwareandsoftwaredsigntechniques,andthendescribetheirapplicationtoanimplementationofanenhancedFTPprotocolcalledGridFTP,WedescriberesultsfromtheSupercomputing2000conference.

简介：在这研究，一件涡轮充电器的离心压气机试验性地并且数字地被调查。压缩机的表演特征被转子速度和流动参数的大小在压缩机的入口和插头试验性地获得。在impeller的三个维的流动领域并且更弥漫与SST骚乱用一个完整的海军司烧节目数字地被分析模型。压缩机的表演特征数字地被获得，它当时与试验性的结果相比。比较显示出好同意。而且，区域比率的效果和性能参数和流动地上的尖端清理数字地被学习。impeller区域比率被切impeller出口轴改变从到5.1公里的最后的价值的4.1公里的起始的价值的宽度，从0.792～0.965导致区域比率。为有出口的转子4.6公里的轴的宽度，性能为0.0，0.5和1.0公里的尖端清理被调查。当效率在0.878的区域比率的更高的价值达到顶点时，在设计点的这模拟的结果证明压缩机压力比率在0.792的区域比率达到顶点。另外，从0～1公里的尖端清理的增长导致了20%效率减少。

简介：UsingPicard'stheoremandthel.eray-Schauderfixedpointtheoremtoreinvestigatethearea-preservingconvexcurveflowintheplanewhichisconsideredasacoupledsystemandthusdifferentfromthesettinghandledbyGage.

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：预先滑动的政体典型地在机械系统的动态建模被忽视。然而，处于静态的磨擦引起的接触状态的变化可以减少位置的精确性和控制精确。为了调查在接触之间的关系，地位和接触在预先滑动强迫磨擦，一个光试验性的方法在这份报纸被介绍。与这个方法，在透明材料的接口的真实接触状态能被使用处理技术的一幅图象基于光的全部的思考原则观察。新奇安装，包括一双矩形的trapezoidal块，被建议解决精确地把不同正切、正常的力量用于接触接口的挑战性的问题。改进Otsus方法被用于测量。通过在polymethylmethacrylate(PMMA)上执行的试验性的研究，接触粗糙的数量被证明是影响真实接触区域的主导的因素。在在预先滑动的政体的真实接触区域和接触力量之间的关系被学习，并且在接触接口的静态的磨擦的分发是讨论的品质上。真实接触区域与增加静态的磨擦一起在膨胀的新现象被识别。上述的关系在在一个经常的正常压力下面的接触接口是近似线性的，并且磨擦应力的分发从前缘减少到后面的边。

简介：Weinvestigatetheareadistributionofclusters(loops)inthehoneycombO(n)loopmodelbymeansofthewormalgorithmwithn=0.5,1,1.5,and2.Atthecriticalpoint,thenumberofclusters,whoseenclosedareaisgreaterthanA,isproportionaltoA-1withaproportionalityconstantC.WeconfirmnumericallythatCisuniversal,anditsvalueagreeswellwiththepredictionsbasedontheCoulombgasmethod.

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简介：Withtheincreasingnumberoflaserbeams,themaindifficultyinarrangingbeamguidingsystems(BGSs)involvesdeterminingthecorrespondingrelationshipsbetweentheoutputandinputportstorealizetheidentifiedlightpathlengthofallbeams.Giventhebasicconstraintsofgeometricarrangement,aBGSmodelisestablished,andabase-linealgorithmisproposedtoaddressthedifficultymentionedabove.Boundaryconditionsoftargetareaandtargetchamberarediscussedtoincreasethenumberoflaserbeams,andamaximumvalueexistsforaspecifictargetarea.Finally,thecompatibilityofacylindricalhohlraumtargetchamberwithasphericalhohlraumisanalyzed,andamoveablefinalopticsassemblyisproposedtoexecutetheswitchbetweenthetwodifferenttargets.

简介：Inthispaper,wederivetheanalyticalsolutionsinathree-dimensionalanisotropicmagnetoelectroelasticbimaterialspacesubjecttouniformextendeddislocationsandtractionswithinahorizontalcirculararea.ByvirtueoftheStrohformalismandFouriertransformation,thefinalexpressionofsolutionsinthephysicaldomaincontainsonlylineintegralsover[0,2π]ratherthaninfiniteintegrals.Asthereducedcases,thehalf-spaceandhomogeneousfull-spacesolutionscanbedirectlyderivedfromthepresentsolutions.Also,intermsofmaterialdomains,thepresentsolutionscanbereducedtothepiezoelectric,piezomagnetic,purelyelasticmaterialswithdifferentsymmetriesofmaterialproperty.Tocarryoutnumericalcalculations,Gaussquadratureisadopted.Inthenumericalexamples,theeffectofdifferentloadinglocationsontheresponseattheinterfaceisanalyzed.Itisshownthat,whenthemagnetictractionorelectricdislocationisapplied,thephysicalquantitiesontheinterfacemaynotdecreasemonotonicallyastheloadingareamovesawayfromtheinterface.Thedistributionsofdifferentin-planephysicalquantitiesontheupperandlowerinterfacesundervariousextendedhorizontalloadingsarecomparedandthedifferencesarediscussed.Theworkpresentedinthispapercanserveasbenchmarksforfuturenumericalstudiesinrelatedresearchfields.

简介：WenumericallyperformedwavedynamicalsimulationsbasedontheMaxwell–Bloch(MB)modelforaquadrupole-deformedmicrocavitylaserwithspatiallyselectivepumping.Wedemonstratetheappearanceofanasymmetriclasingmodewhosespatialpatternviolatesboththex-andy-axesmirrorsymmetriesofthecavity.Dynamicalsimulationsrevealedthatalasingmodeconsistingofaclockwiseorcounterclockwiserotating-wavecomponentisastablestationarysolutionoftheMBmodel.Fromtheresultsofapassive-cavitymodeanalysis,weinterprettheseasymmetricrotating-wavelasingmodesbythelockingoffournearlydegeneratepassive-cavitymodes.Forcomparison,wecarriedoutsimulationsforauniformpumpingcaseandfoundadifferentlockingruleforthenearlydegeneratemodes.Ourresultsdemonstrateanonlineardynamicalmechanismfortheformationofalasingmodethatadjustsitspatterntoapumpedarea.

简介：Monolithicwhite-light-emittingdiodes（whiteLEDs）withoutphosphorsaredemonstratedusingInGaN/GaNmultiplequantumwells（MQWs）grownonGaNmicroringsformedbyselectiveareaepitaxyonSiO2maskpatterns.Themicroringstructureiscomposedof{1-101}semi-polarfacetsanda（0001）c-plane,attributedtofavorablesurfacepolarityandsurfaceenergy.ThewhitelightisrealizedbycombiningshortandlongwavelengthsofelectroluminescenceemissionsfromInGaN/GaNMQWsonthe{1-101}semi-polarfacetsandthe（0001）c-plane,respectively.ThechangeintheemissionwavelengthsfromeachmicrofacetisduetotheIncompositionvariationsoftheMQWs.Theseresultssuggestthatwhiteemissioncanpossiblybeobtainedwithoutusingphosphorsbycombiningemissionlightfrommicrostructures.

简介：Inthiswork,themorphologiesandporestructuresofaseriesofcorncob-derivedactivatedcarbonsandzeolitetemplatedcarbonwithultrahighsurfaceareawerecarefullyinvestigatedbySEM,HRTEMandN2-sorptioncharacterizationtechnologies.Thehigh-pressurehydrogenuptakeperformancewasanalyzedusingstandardPressure-Composition-Temperatureapparatusinordertostudytheporesizeeffectsonhydrogenuptake.Theseas-obtainedporouscarbonsshoweddifferentcharacteristicsofporesizedistributionaswellasspecificsurfacearea.Theresultsindicatethatthemosteffectiveporesforadsorbinghydrogendependedonthestoragepressure.Theseultramicropores(0.65-0.85nm)couldbethemosteffectiveporesonexcessH2uptakeat1bar,however,micropores(0.85-2nm)wouldplayamoreimportantroleinexcessH2uptakeathigherpressureat77K.Atroomtemperature,poresizeeffectsonH2uptakecapacitywereveryweak.BothspecificsurfaceareaandtotalporevolumeplaymoreimportantrolesthanporesizeforH2uptakeatroomtemperature,whichwasclearlydifferentfromthatat77K.Forapplicationsinfuture,thecorncob-derivedactivatedcarbonscanbemoreavailablethanzeolitetemplatedcarbonsat77K.ElementdopingenhancedhydrogenuptakecouldbemainresearchdirectionforimprovingH2uptakecapacityatroomtemperature.更多还原

简介：AtomicallythinMoS2filmshaveattractedsignificantattentionduetoexcellentelectricalandopticalproperties.Thedevelopmentofdeviceapplicationsdemandstheproductionoflarge-areathinfilmwhichisstillanobstacle.Inthisworkwedevelopedafacilemethodtodirectlygrowlarge-areaMoS2thinfilmonSiO2substrateviaambientpressurechemicalvapordepositionmethod.Thecharacterizationsbyspectroscopyandelectronmicroscopyrevealthattheas-grownMoS2filmismainlybilayerandtrilayerwithhighquality.Back-gatefield-effecttransistorbasedonsuchMoS2thinfilmshowscarriermobilityupto3.4cm2V-1s-1andon/offratioof105.Thelarge-areaatomicallythinMoS2preparedinthisworkhasthepotentialforwideoptoelectronicandphotonicdeviceapplications.

简介：FromthecasestudyofEveningBellRingingatNanpingHill,oneoftheWestLakeCulturalLandscapesinHangzhou,China,weinvestigatedthesoundscapeofascenicareawithaprofoundculturalbackground.First,weconductedthesoundscapephysicalindexoftheareainbothwinterandspringseasonstoanalyzeitsobjectivegraphicalexpression.Second,wefocusedonpeople’sreactionstothesoundscapeinordertoobtainasubjectiveevaluationofeachcomponentinthesoundscapeandintegratedenvironment.Then,therelationshipbetweentheobjectivedataandthesubjectiveevaluationwasanalyzed.Finally,theimpactsofthenaturalenvironment,history,andculturalfactorsontheevaluationoftheJingciTemplesoundscapewerestudied.Itwasfoundthatnaturalsounds,culturalsounds,andhistoricsoundswerewidelyacclaimedinpeople’ssubjectivefeelings,whichindicatedthecloserelationshipsamonghistoricalandculturalbackground,soundscape,andnaturalenvironment.Thus,theconclusionwasmadethatsoundscapeshouldbeconsistentwiththelocalnaturalenvironmentandthehistoricalandculturalbackground.

简介：Conventionalorganicsolarcell’s(OSC)architectures,includingrigidtransparentsubstrate(Glass),conductiveelectrode(Indiumtinoxide,ITO)andsmallworkingareas,arewidelyutilizedinorganicphotovoltaicfields.However,suchastructureaswellasconventionalspin-coatingmethodobviouslyrestricttheirindustrialapplication.Inthisarticle,wereportthedepositionofsilvernanowires(AgNWs)ontheflexiblesubstratebyslot-dieprinting.TheobtainedAgNWsfilmsexhibitedahightransmittanceandalowresistance,andwerefurtherusedasthetransparentconductiveelectrodeofOSCs.Atypicalconjugatedpolymer,poly[(2,5-bis(2-hexyldecyloxy)phenylene)-alt-(5,6-difluoro-4,7-di(thiophen-2-yl)benzo[c][1,2,5]thiadiazole)](PPDT2FBT),wasusedastheactivematerialtofabricatelarge-area(7cm~2)solarcellsbyaslot-diecoatingprocess.Thepowerconversionefficiency(PCE)couldreach1.87%initiallyandfurtherincreasedto3.04%bythermalannealing.ComparedtotheperformanceofreferencecellonITOsubstrate,theresultindicatedthattheAgNWscouldbedevelopedasanalternativesubstituteofconductiveelectrodetofabricatethelarge-areaflexibleOSCsbyroll-to-rollprinting.

简介：ＡｃｔｉｖａｔｉｏｎＭｅａｓｕｒｅｍｅｎｔｓｏｆＮｅｕｔｒｏｎＤｏｓｅＥｑｕｉｖａｌｅｎｔＲａｔｅｓｉｎ５０ＭｅＶ／ｕ￣（１８）Ｏ－ｉｏｎＴａｒｇｅｔＡｒｅａ￥ＬｉＧｕｉｓｈｅｎｇ；ＺｈａｎｇＴｉａｎｍｅｉ；ＬｉＺｏｎｇｗｅｉａｎｄＳｕＹｏｕｗｕＮｅ...