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简介：这份报纸介绍直接体积在VTK显示的技术并且讨论ray-casting-the大多数直接体积显示的流行技术。为由raycasting的三个函数的医药容量的数据的可视化被提供。可视化效果证明VTK是容易的在短时间与好质量得到满足的结果。

简介：Thispaperintroducestheconfigurationandtheoperationprinciplesofahighpowerdirectcurrentcircuitbreaker(DCCB).Thecommutatingcurrentprincipleofthebreakerisde-scribedindetailswithitstheoryandsimulationanalysis.ThetestresultspresentedshowthattheDCCBmeetstherequirementsforquenchingprotection.ItwillbeusedasthemainbreakerforquenchprotectioninEAST.

简介：所有液体动态方程在他们的当模特儿的规模下面是有效的，意味着免费路径例如粒子并且意味着Boltzmann方程的碰撞时间规模和NavierStokes(NS)方程的水动力学规模。当前的计算液体动力学(CFD)集中于部分微分方程(PDE)的数字答案，并且它的目的是得到这些管理方程的精确答案。在如此的一个CFD惯例下面，它是难的开发盖住流动物理从的一个统一计划对水动力学运动因为没有能用Boltzmann做光滑的转变到当模特儿的NS的如此的管理方程，连续地可伸缩。液体动力学的学习需要超出传统的数字部分微分方程。出现设计应用程序，例如为近空间的飞行和流动和热转移在的空气车辆设计微设备，确实要求煤气的动力学的概念的进一步的扩大到物理现实，而非传统的可区分的管理方程的更大的域。在当前的阶段，非平衡流动物理很好还没由于适当工具的缺乏被探索了或清楚地理解。不幸地在当前的数字PDE途径下面，它是难的由于有效PDE的缺席开发如此的一个有意义的工具。以便多尺度的构造和类似于构造管理方程的Boltzmann或NS的当模特儿的过程的multiphysics模拟方法，一个数字算法的发展应该基于物理建模的第一个原则。在这份报纸，而不是跟随传统的数字PDE路径，我们介绍为CFD算法开发的作为一个原则的直接建模。因为所有计算与有限房间分辨率在一个discretized空格被进行，要当模特儿的流动物理不得不在网孔尺寸和时间步骤规模被做。这里，CFD是差不多分离数字进化方程的直接构造，在网孔尺寸和时间步骤将玩的地方，在建模的动态角色处理。与在网孔之间的比率的变化，尺寸和本地粒子意味着免费路径，从到水动力学波浪繁殖的运动粒子运输和碰撞的计划愿望俘获流动物理。基于直接建模，流动运动的连续动力学�

简介：Inimagereconstructionalgorithms,thechoicesoffilterfunctionsandinterpolatingfunctionsareveryimportantforthecomputationalspeedandthequalityoftheimagereconstructed,especially,forfan-beamgeometry,theoccurrenceofthesingularintegraloperatormayleadtosomegreatoscillationscomparedtotheoriginalimage.Inthispaperwewillgiveadirectconvolu-tionalgorithmwhichneedsnotthecomplexcomputationsoccuringintheFouriertransform,thenusingacircleintegralweobtainastablecomputationalprogram.Differentfromallotherpreviouswindowfunctionsusedbymanypioneerresearchers,inouralgorithmwechooseawindowfunctionsimilartoGabor'swindowfunctione-x^2/2,whichcanberegardedastheapproximationtotheinverseFouriertransformofalocallyintegrablefrequencyfunction.AlsowepointoutthatsuchreconstructionalgorithmprocedurescanbeusedtodealwiththeSPECTprojectiondatawithconstantattenuation.

简介：Theunitcircleproblemistheproblemoffindingthenumberofeigenvaluesofanon-Hermitianmatrixinsideandoutsidetheunitcircle.Toreducethecostofcomputingeigenvaluesfortheproblem,adirectmethod,whichisanalogoustothatgivenin[5],isproposedinthispaper.

简介：FDIinMyanmarhasgrownsteadilywithmorediversifiedinvestmentsourcesandfields.ThechangesinMyanmar’sinvestmentenvironmentcausedbythereformposenewchallengesforChineseinvestors.Tohandlethem,Chinesefirmsshoulddiversifytheformsandsubjectsofinvestment,takeintoaccounttheconcernsofthepeopleofMyanmarandcomplywiththenationaldevelopmentstrategyofthecountry.

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简介：Inthescenariowherethedarkmatter(DM)particlesχχˉpairannihilatethrougharesonanceparticleR,theconstraintfromDMrelicdensitymakesthecorrespondingcrosssectionforDM-nucleielasticscatteringextremelysmall,andcanbebelowtheneutrinobackgroundinducedbythecoherentneutrino-nucleiscattering,whichmakestheDMparticlebeyondthereachoftheconventionalDMdirectdetectionexperiments.WepresentanimprovedanalyticalcalculationoftheDMrelicdensityinthecaseofresonantDMannihilationfors-andp-wavecasesandinvesitgatetheconditionfortheDM-nucleiscatteringcrosssectiontobeabovetheneutrinobackground.WeshowthatinHiggs-portaltypemodels,forDMparticleswiths-waveannihilation,thespin-independentDM-nucleusscatteringcrosssectionisproportionaltoΓR/mR,theratioofthedecaywidthandthemassofR.ForatypicalDMparticlemass～50GeV,theconditionleadstoΓR/mR≥O(10-4).Inp-waveannihilationcase,thespin-independentscatteringcrosssectionisinsensitivetoΓR/mR,andisalwaysabovetheneutrinobackground,aslongastheDMparticleislighterthanthetopquark.TherealsingletDMmodelisdiscussedasaconcreteexample.

简介：Thetransitiontoturbulenceinflowswherethelaminarprofileislinearlystablerequiresperturbationsoffiniteamplitude."Optimal"perturbationsaredistinguishedasextremaofcertainfunctionals,anddifferentfunctionalsgivedifferentoptima.Weherediscussthephasespacestructureofa2Dsimplifiedmodelofthetransitiontoturbulenceanddiscussoptimalperturbationswithrespecttothreecriteria:energyoftheinitialcondition,energydissipationoftheinitialcondition,andamplitudeofnoiseinastochastictransition.Wefindthatthestatestriggeringthetransitionaredifferentinthethreecases,butshowthesamescalingwithReynoldsnumber.

简介：(DVR)直接体积显示是允许用户有效地探索并且学习容量的数据集的一种强大的可视化技术。不同透明性设置能灵活地被分到不同结构以便一些珍贵信息能在直接体积被揭示显示的图象(DVRI)。然而，因为他们不知道任何重要信息是否从DVRI的透明区域是失踪的，经常，一些风险总是是的感觉与DVR联系了的最终用户。在这份报纸，我们调查怎么半自动地产生一套DVRI并且也，能揭示信息的一张动画在原来的DVRI并且同时错过了满足象连贯那样的一些图象质量标准。一个完全的框架被开发处理与产生和可见性知道的DVRI和动画的优秀评估有关的各种各样的问题。我们的技术能减少直接使用体积显示的风险并且因此在显示系统的体积增加用户的信心。

简介：Theinfluenceofsiliconsliceflatnessonbondingtechnologyandtherelationbetweenaforeignparticleandresultingbubblearequantitativelypresentedbytheelastictheory.ItisdemonstratedexperimentallybyX-raydoublecrystaldiffractometryandinfraredimager.

简介：Directconversionofmethanetohigherhydrocarbonsisaneffectiveprocesstosolvetheproblemofnaturalgasutilization.Althoughremarkableprogresshasbeenachievedonthedehydro-aromatizationofmethane(DAM),lowconversioncausedbyseverethermodynamiclimitations,cokeformation,andcatalysisdeactivationremainimportantdrawbackstothedirectconversionprocess.MolybdenumcatalystssupportedonHZSM-5typezeolitesupportareamongthemostpromisingcatalysts.Thisreviewfocusesontheaspectsofdirectmethaneconversion,intermsofcatalystscontainingmetalandsupport,reactionconditions,andconversionindifferenttypesofreactors.Thereactionmechanismforthiscatalyticprocessisalsodiscussed.

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简介：Electrospinning技术被用来制作PVP/Ce(NO3)3合成microfibers。不同词法CeO2nanofibers被PVP/Ce(NO3)的锻烧获得3合成microfibers并且被扫描电子描绘显微镜学(SEM)，传播电子显微镜学(TEM)，X光检查衍射(XRD)，热gravimetric和微分热分析(TG-DTA)，并且(FTIR)。SEM显微图显示合成纤维的表面是光滑的并且随锻烧温度的增加变得粗糙。CeO2空nanofibers的直径(在600点的300nm

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简介：ThepaperreportedresultsofthermodynamicalanalysisandexperimentonMgO-C,MgO-CaOANDMgO-CaO-Ferefractories.TheresultshaveshownthatstabilityatsuperhightemperatueincreasesinorderofmeritMgO-Ccontianingmetaladditives,MgO-Ccontainingnometals,MgO-CaO-CandMgO-CaO-Fe,Onthebasisoftheexperimentresultsandtheoryanalysis,rammingmixandhotrepairingmixwereproducedinpatches,andweretrialusedin5t,60tand100tDCfurnacesandextraordinarygoodtrialresultswereachieved.

简介：Inthisarticle,byintroducingcharacteristicsingularintegraloperatorandassociatesingularintegralequations(SIEs),theauthorsdiscussthedirectmethodofsolutionforaclassofsingularintegralequationswithcertainanalyticinputs.Theyobtainboththeconditionsofsolvabilityandthesolutionsinclosedform.ItisnoteworthythatthemethodisdifferentfromtheclassicalonethatisduetoLu.