简介：Ａｎｇｕｌａｒ　Ｍｏｍｅｎｔｕｍ　Ｃｏｈｅｒｅｎｃｅ　ｉｎ　Ｄｉｓｓｉｐａｔｉｖｅ　ＣｏｌｌｉｓｉｏｎＡｎｇｕｌａｒＭｏｍｅｎｔｕｍＣｏｈｅｒｅｎｃｅｉｎＤｉｓｓｉｐａｔｉｖｅＣｏｌｌｉｓｉｏｎ￥ＷａｎｇＱｉ；ＬｕＪｕｎ；ＸｕＨｕｓｈａｎ；ＬｉＳｏｎ...

简介：影象校准重复精度±12．5微米（±0．0005）@6西格码，（cpk〉=2．0），由CeTaQ测得

简介：Apreviouslydevelopedmodelofa2-dimensionalairflowwithconstanthorizontalshearisusedtoestimeatetheaccuracyofthegeostrophicmomentumapproximationbycomparisonofexactsolutionswhenexistwithapproximateones.

简介：垂直积云动量运输是在热带空气的重要物理进程并且在热带大气的系统的进化起一个关键作用。这篇论文在二个全球气候模型(GCM)在Madden-Julian摆动(MJO)模拟上集中于垂直积云动量运输的影响。Tiedtke积云parameterization计划被用于两GCM[CAM2并且光谱LASG/IAP(SAMIL)的大气的一般发行量模型]。MJO模拟能力可能被垂直积云动量运输通过积云parameterization计划影响，这被发现。然而，在不同模型的垂直动量运输的使用提供不同结果。以便改进模型的MJO模拟能力，我们必须以一个更合理的方法介绍垂直积云动量运输进模型。而且，parameterization的连贯和内在的模型也需要被考虑。

简介：为了提供指令因为推进器的计算用身体在壳推进器相互作用的学习导致了速度，强迫途径，三个方法被用来计算推进器导致的速度：1)自我推进测试的平均Reynolds的海军司烧(RANS)模拟，2)推进器的RANS模拟开的水测试，并且3)推进器的动量理论。从开始的二个方法的结果对试验性的数据被验证估计计算流动领域的精确性。戳身份方法被采用获得进展速度，它然后被用来导出推进器来自全部的速度地的导致的速度。开始的二条途径计算的结果是靠近的，当那些显著地从动量理论被过高估计时。介绍结果能证明为用身体力量途径的自我推进的另外的计算有用。

简介：China-LACtradevolumehasrisenmorethan20timesinthepastdecade,andreached269billionUSdollarsin2014.ChinahasbecomethesecondlargesttradepartneroftheLACandlargesttradepartnerofBrazil,ChileandotherLACcountries.Whattheinfluencewilleconomically-transformingChinaexertonLACeconomy?HowwillChinaLACtradeandeconomicrelationshipdiversify?Whatnewelementswillemergeinthecorporatecooperation

简介：Thequicklyincreasingdatatransferloadrequiresanurgentrevolutionincurrentopticalcommunication.Orbitalangularmomentum（OAM）multiplexingisapotentialcandidatewithitsabilitytoconsiderablyenhancethecapacityofcommunication.However,thelackofacompact,efficient,andintegratedOAM（de）multiplexerpre-ventsitfrombeingwidelyapplied.Byattachingvortexgratingsontothefacetsofafew-modefiber,wedem-onstrateanintegratedfiber-basedOAM（de）multiplexer.AvortexgratingfabricatedonthefiberfacetenablesthedirectmultiplexingofOAMstatesatoneportandthedemultiplexingofOAMstatesattheotherport.Themeasuredbiterrorrateofthecarriersignalafterpropagatingthrougha5-kmfew-modefiberconfirmsthevalidityandeffectivenessoftheproposedapproach.Theschemeoffersadvantagesinfuturehigh-capacityOAMcom-municationbasedonopticalfiber.

简介：ＭｏｍｅｎｔｕｍＤｉｓｔｒｉｂｕｔｉｏｎｏｆＰｒｏｄｕｃｔｓｆｒｏｍＴｒａｎｓｆｅｒａｎｄＦｒａｇｍｅｎｔａｔｉｏｎＴｒａｎｓｆｅｒａｎｄＦｒａｇｍｅｎｔａｔｉｏｎ￥ＷｕＺｈｏｎｇｌｉＴｈｅｍｏｍｅｎｔｕｍｄｉｓｔｒｉｂｕｔｉｏｎ...

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简介：交往的费米子的统计性质与配对相互作用的包括为各种各样的尖动量被学习了。为几个原子核的尖动量上的批评温度的依赖，被学习了。是的年著名计算机生产厂商精力为~(28)的尖动量的功能Si和~(24)Mg原子核被计算了直到刺激精力的60.0兆电子伏。计算限制尖时刻一与艾尔由~(12)生产了的~(26)的试验性的结果相比C+~(14)N反应。为non-zeroangular动量的相关原子水平密度为~(44)被计算了Ti和~(136)Ba原子核。结果与他们从近似公式获得的相应价值相比。

简介：'Althoughvariousrisks,suchaspolicyrisk,demandchangingrisk,marketcompetitionrisk,pricefluctuationriskofrawmaterialandfinancialriskexisttovaryingdegrees,theinvestmentcrazeonthermalpowerprojectswouldnotcooldown,'anexpertwithChinaPowerEngineeringConsultingGroupCorporationsaid.

简介：在这个工作，有为BP神经网络的动量的一个坡度方法被考虑。动量系数以一种适应方式被选择加速并且稳定网络重量的学习过程。相应集中结果被证明。

简介：Itisshownthatorbitalangularmomentum(OAM)isapromisingnewresourceinfutureclassicalandquantumcommunications.However,theseparationofOAMmodesisstillabigchallenge.Inthispaper,weproposeasimpleandefficientseparationmethodwitharadialvaryingphase.Inthemethod,specificradialvaryingphasesaredesignedandmodulatedfordifferentOAMmodes.Theresultantbeamisfocusedtothespotswithdifferenthorizontalandverticalpositionsafteraconvexlens,whenthecoordinatetransformation,includingtwoopticalelementswithcoordinatetransformationphaseandcorrectphase,operatesonthereceivedbeam.Thehorizontalpositionofthespotisdeterminedbythevortexphases,andtheverticalpositionofthespotisdependentontheradialvaryingphases.ThesimulationandexperimentalresultsshowthattheproposedmethodisfeasiblebothforseparationoftwoOAMmodesandseparationofthreeOAMmodes.TheproposedseparationmethodisavailableinprincipleforanyneighboringOAMmodesbecausetheradialvaryingphaseiscontrolled.Additionally,noextrainstrumentsareintroduced,andthereisnodiffractionandnarrowingprocesslimitationfortheseparation.

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简介：TostudytheroIesofMomentumDependentInteraction(MDI)inthefragmentationdtietothecouplingbetweentheisospindependenceofthetwo-bodycollisionsandMDI,westudy,byusingIsospin-dependentQuantumMolecularDynamicsmodel,thetimeevolutionsofthevariationofthe△N_(imf)(△σ,U_1~(sym))withtheMDIandwithoutit(NOMDI).Thequantityisdefinedas

简介：ThefollowingquantitycanbeusedtodescribenuclearstoppinginHIC.Thetransverse-parallelratioofmomentumRgivenbyR=(2/π)(∑_i~A|P⊥(i)|)/(∑_i~A|P_‖(i)|).HerethetotalmassAisthesumoftheprojectilemassA_pandthetargetmassValuesofthetransverseandparallelcomponentsofthemomentumofthei-thnucleonareP⊥(i)=P_x(i)~2+P_y(i~2~(1/2and‖P_(i)=P_z(i),respectively.Tostudytherolesofthemomentumdependentinteractiononthenuclearstoppingduetothecouplingbetweentheisosp...

简介：Inthispaper,wedemonstrateaschemeforcompensatingdistortedopticalvortexbeamscarryingorbitalangularmomentum.ByinputtingtheintensityprofileintotheGerchberg–Saxtonalgorithm[Optik35,237(1972)],thepre-compensationphasemaskcanbeacquired.Noadditionalprobebeamsareintroduced,andallthecomputingisaimingatthetransmittedvortexbeams.Thedistortedvortexbeamsareinvestigatedexperimentallybeforeandafterpre-compensation,showingfavorablecompensationperformance.Thisschemewillfindapplicationsintheareasofrotationdetection,opticalcommunications,andsoon.

简介：Verticalstructuresofmomentumexchangecoefficientandsedimentconcentrationarethekeysintheresearchonestuarineandcoastalsuspendedsedimenttransport.Basedontheparabolicmixinglengthdistributionpattern,thedistributionpatternofverticalmomentumexchangecoefficientwhichissuitableforestuarineandcoastalwatersisconstructed.AcomparisonwithsteadyflowandmeasuredmomentumexchangecoefficientduringonetidalcycleintheMenaiStraitofEnglandshowsthattheresultofthispatternisclosertothemeasuredvaluesthanthoseofcommonlyusedRouse'sandvanRijn'spatterns,andthepatternisalsosuitableforestuarineandcoastalwaters.Successively,basedonthepreconditionthatmomentumexchangecoefficientisequivalenttosedimentturbulentdiffusioncoefficient,andcombiningwiththeDiffusionTheory,weobtaintheexponentialverticaldistributionpatternofsedimentconcentration,whichisalsosuitableforestuarineandcoastalwaters.Thereby,usingmeasuredverticalstratifiedsedimentconcentrationdataoftheSouthandtheNorthPassagesoftheYangtzeEstuaryandZhoushanarchipelagowatersforfittingcalculation,andcomparingtheresultswiththosefromRouse's(1938)andZhangetal.'s(1989)formulas,theresultsshowthattheexponentialverticaldistributionpatternofsedimentconcentrationobtainedinthepresentstudynotonlyovercomesthedefectofRouse'sformulathatthesurfacesedimentconcentrationwillbe0,butalsohasaholistichigherprecisionalongtheverticallinesthanthoseofRouse'sandZhangetal.'sformulas.

简介：有由动量车轮的一根伸臂横梁被学习的一个附器的充满液体的太空船的态度演习。动态方程被尖动量和力量平衡原则的保存导出。动量车轮的反馈控制策略被申请态度演习。在演习过程的太空船的剩余点头随着一些选择参数变化，例如稳定的州的时间，液体容器的地点和附器，并且附器参数。结果显示在修理身体的坐标系统的第二和第四个象限和主要身体的墙的第二个象限的地点是为如果他们能随机被放，把液体集装箱和附器放比另外的地点的更好的选择。更高的密度和更厚的生气的节对如果他们能被改变，降低剩余点头更好。轻附器能作为僵硬身体被建模，它不过比一个灵活模型导致一个更大的剩余点头。剩余点头与增加起始的sloshing的绝对值减少尖高度。

简介：Numericalinvestigationofatransversesonicjetinjectedintoasupersoniccrossflowwascarriedoutusinglarge-eddysimulationforafree-streamMachnumberM=1.6andaReynoldsnumberRe=1.38×10~5basedonthejetdiameter.Effectsofthejet-to-crossflowmomentumratioonvariousfundamentalmechanismsdictatingtheintricateflowphenomena,includingflowstructures,turbulentcharactersandfrequencybehaviors,havebeenstudied.Thecomplexflowstructuresandtherelevantflowfeaturesaredisc...