简介：采用恒星形成的观察分布在剩余的框架评估Lyman裂缝星系(LBG)的andhalf光半径紫外，我们以经验为主地为LBG调查预言的星的集体功能。一座山峰在1.5附近在质量存在，这被发现为他们的星的集体功能并且在那里的x10(10)M(圆点)是比10高的LBGswith星的群众(11)的重要数量在类似于3的z的M(圆点)。在那里，为LBG人口的二个家庭应该被红外线的数组照相机(IRAC)观察(它是在红外线的空间的一台关键仪器望远镜Spitzer)，一个人是红的，其它是蓝的，它与最近的工作一致。而且，为有不同星的群众的LBG的预言的comoving关联长度，即，与不同8亩m大小，也被讨论。红LBG应该比蓝LBG更强烈在空间被聚类。这些预言能被IRAC的观察测试，并且将在当前的层次星系形成模型上提供强壮的限制。

简介：Inthispaper,anewmodifiedextendedtanh-functionmethodispresentedforconstructingsoliton-like,periodicformsolutionsofnonlinearevolutionequation(NEEs).Thismethodismorepowerfulthantheextendedtanhfunctionmethod[Phys.Lett.A277(2000)212]andthemoditiedextendedtanh-functionmethod[Phys.Lett.A285(2001)355].AbundantnewsolutionsoftwophysicallyimportantNEEsareobtainedbyusingthismethodandsymboliccomputationsystemMaple.

简介：Thediscoveryofexcitationfunctionfluctuationindissipativehearyioncollisions(DHIC)isasimportantasthediscoveryofDHICitself.ManyquantitativeinterpretationofDHICdataonlyarerestrictedtothedeseriptionoftheenergyaverageddifferentialcrosssections.However,thedescriptionofphysicalsystemsshouldinvolveboththeanalysisofaveragedvaluesandfluctuationsofobservables.Thephenomenonofexcitation

简介：IntheresearchofusingRadialBasisFunctionNeuralNetwork(RBFNN)forecastingnonlineartimeseries,weinvestigatehowthedifferentclusteringsaffecttheprocessoflearningandforecasting.Wefindthatk-meansclusteringisverysuitable.Inordertoincreasetheprecisionweintroduceanonlinearfeedbacktermtoescapefromthelocalminimaofenergy,thenweusethemodeltoforecastthenonlineartimeserieswhichareproducedbyMackey-Glassequationandstocks.Byselectingthek-meansclusteringandthesuitablefeedbackterm,muchbetterforecastingresultsareobtained.

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简介：Weproposedaschemeforthereconstructionofthequantumstatesforthecenter-of-massvibrationalmodeoftwotrappedions.Intheschemetheionsaremultichromaticallyexcitedbythreelasers.ThenmeasurementofthedifferencebetweenprobabilitiesoftheionsbeingbothinelectronicgroundandexcitedstatesdirectlyyieldstheWignercharacteristicfunctionforthecenter-of-massvibrationalstate.Theschemecanalsobeusedtoprepareentangledcoherentstatesforthecenter-of-massandrelativevibrationalmodes.

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简介：Inthisletterthethree-dimensionalnonlinearHelmholtzequationisinvestigated,whichdescribeselectro-magneticwavepropagationinanonlinearKerr-typemediumsuchthatsixteenfamiliesofnewJacobiellipticfunctionsolutionsareobtained,byusingourextendedJacobianellipticfunctionexpansionmethod.Whenthemodulusm→1or0,thecorrespondingsolitarywavesincludingbrightsolitons,darksolitonsandnewlinesolitonsandsinglyperiodicsolutionscanbealsofound.

简介：BasedonageneralanalysisofGreenfunctionsinthereal-timethermalfieldtheory,wehaveproventhatthefour-pointamputatedfunctionsinanNJLmodelinthefermionbubblediagramapproximationbehavelikeusualtwo-pointfunctions.WeexpoundthethermaltransformationsofthematrixpropagatorsforascalarboundstateintheFFbasisandintheRAbasisrespectively.Theresultingphysicalcausal,advancedandretardedpropagatorsarerespectivelyidenticaltocorrespondingonesderivedintheimaginary-timeformalism,andthisshowsonceagainthecompleteequivalenceofthetwoformalismsofthermalfieldtheoryonthediscussedproblemintheNJLmodel.