简介：

简介：Windspeedscalinginsimilaritylawinwind-generatedwavesandthedragcoefficientarestudied.Inanalyzingthedatainthewindwavechannel,itisfoundthattheu.scalinggreatlyreducesthescatterintheU10scaling.Theu.scalinghasmuchlessscatterthanthescalingusingotherwindspeeds.Thefrictionvelocityseemstoplayadistinctiveroleinwavegrowth.Theresultisimportantintheapplicationsofthesimilaritylawandinwavemodeling.Intheoryitgivesaninsightintothemechanismofwindwaveinteraction.Itisfoundthatwavesteepnessisimportantininfluencingthedragcoefficient.Thevariabilityofthecoefficientsinthecurrentlywidelyuseddragformcanbeexplainedbythedifferencesinwavesteepnessintheobservations.Adragcoefficientmodelwithwindspeedandwavesteepnessasparametersisproposed.AnexplanationforKahma'sresultthattheu.scalingdoesnotreducethescatterintheU10scalingisgiven.

简介：@ChristianNocke

简介：Aspatialdistributionofdiffusereflectanceproducedbyobliquelyincidentlightisnotcenteredaboutthepointoflightentry.Thevalueofshiftinthecenterofdiffusereflectanceisdirectlyrelatedtotheabsorptioncoefficientμ_aandtheeffectiveattenuationcoefficientμ_(eff).μ_aandthereducedscatteringcoefficientμ'_sofhumanskintissuesinvivoaremeasuredbyoblique-incidencereflectometrybasedonthetwo-sourcediffusetheorymodel.FortenChinesevolunteersaged15-63years,μ_aandμ'_sarenoninvasivelydeterminedtobe0.029-0.075and0.52-0.97mm~(-1),respectively.

简介：Theexactclassicallimitsforthecoefficientofvariationcforthenormaldistributionarederived.Thehand-calculatingapproximatedclassicallimitsforchavinghighaccuracyaregiventomeetpracticalengineeringneeds.UsingOdehandOwen’scomputationalmethodandBrent’salgorithm,thetablesforther-upperexactclassicallimitsofcoefficientofvariation.fornormaldistributionarecalculatedforthedifferentconfidencecoefficientγ,thesamplesizen=I（1）30,40,60,120,thesamplecoefficientofvariation（?）=0.01（0.01）0.20.Itisshownthatifn≤8,（?）≤0.20,thentheY-upperexactclassicallimitscuforcareslightlyhigherthantheexactfiduciallimitscu,Fforc.ifn>8,（?）≤0.20,thencu-cu,F<5×10-6.

简介：

简介：SpecimensofPbTesinglefilmaredepositedonGesubstratesbyvacuumthermalevaporation.Duringthetemperaturerangeof80–300K,thetransmittanceofaPbTefilmwithin2–15μmismeasuredevery20KbythePerkinElmerFouriertransforminfraredspectroscopycryogenictestingsystem.Then,therelationshipbetweentherefractiveindexandwavelengthwithin7–12μmatdifferenttemperaturesisreceivedbythefullspectruminversionmethodfitting.ItcanbeseenthattherelationshipconformstotheCauchyformula,whichcanbefitted.Then,therelationshipbetweentherefractiveindexofthePbTefilmandthetemperature/wavelengthcanbeexpressedasn(λ,T)=5.82840-0.00304T+4.61458×10~(-6)T~2+8.00280∕λ~2+0.21544∕λ~4,whichisobtainedbythefittingmethodbasedontheCauchyformula.Finally,thedesignedvalueobtainedbytheformulaandthemeasuredspectrumarecomparedtoverifytheaccuracyoftheformula.

简介：

简介：InthispaperbestapproximationbyreciprocalsoffunctionsofasubspaceUn=span（u1,…,un）satisfyingcoefficientconstraintsisconsidered.Wepresentacharacterizationofbestapproximations.When（u1,…,un）isaDescartessystemanexplicitcharacterizationofbestapproximationsbyequioscillationsisgiven.Existenceanduniquenessresultsareshown.Moreover,thetheoryisappliedtobestapproximaitonsbyreciprocalsofpolynomials.

简介：Inthepresentpaper,theauthorsintroduceanewsubclassofp-valentanalyticfunctionswithcomplexorderdefinedontheopenunitdiskU=fz:z2Candjzj<1gandobtaincoefficientinequalitiesforthefunctionsintheseclass.Applicationoftheseresultsforthefunctionsdefinedbytheconvolutionarealsoobtained.

简介：Mardia(1970)definedameasureofmultivariatekurtosisandderiveditsasymptoticdistributionforsamplesfromamultivariatenormalpopulation.SomenewresultsonellipticaldistributionsareusedtoextendMardia’sresultstosamplesfromanellipticaldistribution.Theseresultsprovideamethodfortestinghypothesesonthekurtosisparameterofellipticaldistributions.AnappendixprovidesextensionsofKendallandStuart’s(1977)standarderrorsofbivariatemomentstothethirdandfourthorder.

简介：Inthispaper,anewcollocationBEMfortheRobinboundaryvalueproblemoftheconductivityequation▽(γ▽u)=0isdiscussed,wheretheγisapiecewiseconstantfunction.Bytheintegralrepresentationformulaofthesolutionoftheconductivityequationontheboundaryandinterface,theboundaryintegralequationsareobtained.Wediscussthepropertiesoftheseintegralequationsandproposeacollocationmethodforsolvingtheseboundaryintegralequations.Boththetheoreticalanalysisandtheerroranalysisarepresentedandanumericalexampleisgiven.

简介：

简介：TheRitzprojectionsoftheellipticproblem（?）(aij（?）ju)+c0u=finΩ,u=0on（?）Ω,andthequasilineareilipticproblem（?）（ai（x,Du））+a0（x,Du）=0inΩ,u=0on（?）Ωwithlinearfiniteelementsadmitanasymptoticerrorexpansion,respectively,forcertainclassesof“uniform”meshes.ThisprovidesthetheoreticaljustificationfortheuseofRichardsonextrapolationforincreasingtheaccuracyoftheschemefromO（h2）toO（h4|lnh|）.

简介：Fromanordinarycondition,usingafullthree-dimensionalmodeltheoryandaninfiniteperturbationexpansionmethod,anexactsolutionofthere-flectioncoefficientforthecoatednarrowstripe-geometryopticalwaveguidedeviceshasbeenderived.Allsixcomponentsandthevectorpropertyoftheelectroma-gneticfieldhavebeenconsidered.Theresultsaresuitableforthesymmetricandasymmetricwaveguides.

简介：InthispaperweconsidertheclassofBazilevicfunctionsforbi-univalentfunctions.Forthiswewillestimatethecoefficientsa2anda3usingCaratheodoryfunctionsandthemethodofdifferentialsubordination.

简介：与直接脱离相比，prepulse被用来在激光血浆推进提高联合系数。联合系数与在主要横梁和prepulse之间的延期时间是相关的，这被发现。在12ns的一延期时间，联合系数到达5.8脳的最大值10?5N/W。CLC数字O532+.25文件代码A

简介：

简介：Inthispaper,theasymptoticbehaviorasε→Ooftheminimizersu,oftheGinzburgLan-daufunctionalwithvariablecoefficientisdiscussed.Thesingularitiesarefoundtobelocatedatthepointswhichgloballyminimizethecoefficient.Thezerosofu,areaccumulatednearthesingulari-tiesasissmallenough.Thisverifiesthepinningmechanism.

简介：Inthevisiblespectrum,theatmosphericattenuationstosunlightmainlyincludeaerosolscattering,atmosphericmoleculeRayleighscatteringandozoneabsorption,whileinthenear-infraredspectrum(from650nmto1000nm),wemusttakewater-vaporabsorptionintoaccount.Basedontheatmosphericcorrectiontheory,usingspectrumirradiancedatameasuredbyInstantaneousGroundspectrometer,ozonecontentmeasuredbyMicrotopsⅡozonemonitor,water-vaporcontentandaerosolopticalthicknessmeasuredbysunphotometer,wegiveanewwaytostudywater-vaporabsorptiontosunlight,andtheresultshowsthatthemainpeakvaluesofwater-vaporabsorptioncoefficientsare0.025cm-1,0.073cm-1,0.124cm-1,0.090cm-1,0.141cm-1and0.417cm-1,whichrespectivelylieat692nm,725nm,761nm,818nm,912nmand937nm.