学科分类
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320 个结果
  • 简介:Thecurrentcalibrationfunctionusedincalculatingthemagnitudeofnaturalearthquakeswithin5kmisaconstant;afactthatcausesseveralseriousdifficultiesforthecalculationofthemagnitudeofsmallandshallow-focusearthquakes.Accordingtotheattenuationlawofexplosionsandthepropagationtheoryofelasticwaves,thecalibrationfunctioniscalculatedfornearfieldquakesfrom0kmto5km.Magnitudesoftwoaftershocksequencesarecalculated.Themagnitudesofmostexplosionearthquakesaresmall,rangingmainlyfrommagnitude0.5to1.0.TheM-tchartoftheexplosiveaftershocksiscompletelydifferentfromthatofstrongearthquakeaftershocks.Itnotonlyshowspositivecolumnarlinesindicatinglargemagnitudesbutalsoshortnegativecolumnarlinesindicatingsmallmagnitudes.

  • 标签: 地震学 余震 标准函数 能量
  • 简介:Alargeclassoflinearstructuralfunctions(LSF)satisfyingtheconditionofcorrelationalimmunityoforderoneareconstructedbystudyingthelinearstructuralBooleanfunctions.Withthesenewfoundedfunctions,theknownenumerationboundsofcorrelation-immunefunctionsoforderonearegreatlyimproved.Infact,thebest,uptonow,lowerboundisfound.

  • 标签: BOOLEAN FUNCTION STREAM ciphers Correlation-immune FUNCTION
  • 简介:ForRiemannianmanifoldswithameasure,westudythegradientestimatesforpositivesmoothf-harmonicfunctionswhenthe∞-Bakry-EmeryRiccitensorandRiccitensorareboundedfrombelow,generalizingtheclassicalonesofYau(i.e.,whenfisconstant).

  • 标签: 梯度估计 调和函数 光滑 正定 黎曼流形 大肠杆菌
  • 简介:AconstructiveproofisgivenfortheinversionformulaforzonalfunctionsonSL(2,R).AconcretelyconstructedsequenceofzonalfunctionsareprovedtosatisfytheinversionformulaobtaAnedbyHarish-Chandraforcompactsupportedinfinitelydifferentiablezonalfunctfons.Makinguseofthepropertyofthissequencesomehowsimilartothatofapproximationkernels,theauthorndeducethattheinversionformulaistrueforcontinuouszonalfunctiotmon8L(2,R)somecondition.Theclassicalresultcanbeviewedasacorollaryoftheresultshere.

  • 标签: 线性函数 倒置公式 近似值 数学分析 证明方法
  • 简介:Manynonlinearquantumopticalphysicsphenomenaneedmoreaccuratewavefunctionsandcorrespondingenergyorquasienergylevelstoaccountfor.AnanalyticexpressionofwavefunctionswithcorrespondingenergylevelsforanatomicelectroninteractingwithaphotonfieldispresentedasanexactsolutiontotheSchrSdinger-likeequationinvolvedwithbothatomicCoulombinteractionandelectron-photoninteraction.Thesolutionisanaturalgeneralizationofthequantum-fieldVolkovstatesforanotherwisefreeelectroninteractingwithaphotonfield.ThesolutionshowsthatanN-levelatominlightformstationarystateswithoutextraenergysplittinginadditiontotheFloquetmechanism.Thetreatmentdevelopedherewithcomputingcodescanbeconvenientlytransferredtoquantumopticsinclassical-fieldversionasresearchtoolstobenefitthewholephysicscommunity.

  • 标签: Volkov-Coulomb problem driven N-level atom EXACT
  • 简介:让π和π′是GLm(ℚ)和GLm′的自形的无法缩减的尖代表(ℚ),分别地,并且L(s,π×)Rankin-SelbergL功能被纳入π和π′。没有假定概括Ramanujan,推测(GRC),作者为L给概括素数定理(s,π×)什么时候π≅π′。结果在2007概括刘和汝的相应结果。

  • 标签: 素数定理 广义 函数 RAMANUJAN 方差分析 名称
  • 简介:Inthispaper,westudyaspecialclassoffractalinterpolationfunctions,andgivetheirHaar-waveletexpansions.Onthebasisoftheexpansions,weinvestigatetheH(o|¨)ldersmoothnessofsuchfunctionsandtheirlogicalderivativesoforderα.

  • 标签: CLASS INTERPOLATION wavelet fractal SMOOTHNESS Barnsley
  • 简介:Theobjectofthispaperistostudythenon-tangentialincreasingpropertiesofpositiveharmonicfunctionuinLipschitzdomainbymeansofMartinrepresentationtheory,Anecessaryandsufficientconditionofthecontrolofgrowthofunearanyfixedboundarypointisobtained.Itisshownthatthenon-tangentialincreasingdegreeofunearaboundarypointisexactlythelocaldegreeofitsrepresentationmeasurewithrespecttotheharmonicmeasure.Someexanlplesaregiven.

  • 标签: 马丁边界 调和函数 调和测度 Lipschitz范围
  • 简介:Inthispaper,basedonastochasticmode!forinputsandweights,andinviewofthedisturbanceofcorrelativeandlargeinputandweighterrors,ageneralalgorithmtoobtaintheoutputerrorcharacteristicsofaclassofmultilayeredperceptronswiththresholdfunctionsisproposedbyusingstatisticalapproach.Furthermore,theformulatocalculatetherobustnessofthenetworksisalsogiven.Theresultofcomputersimulationindicatesthecorrectnessofthealgorithm.

  • 标签: MULTILAYERED PERCEPTRONS THRESHOLD NEURON ERROR analysis
  • 简介:Inthisstudy,anewmethodologybasedontheHadamardmatrixisproposedtoconstructquantumBooleanfunctionsfsuchthatf=I2n-2P2n,whereI2nisanidentitymatrixoforder2nandP2nisaprojectivematrixwiththesameorderasI2n.TheenumerationofthisclassofquantumBooleanfunctionsisalsopresented.

  • 标签: HADAMARD矩阵 布尔函数 量子 构造 投影矩阵 计数
  • 简介:LetMbead×dexpansivematrix,andFL2(Ω)beareducingsubspaceofL2(Rd).ThispapercharacterizesboundedmeasurablesetsinRdwhicharethesupportsofFouriertransformsofM-refinableframefunctions.Asapplications,wederivethecharacterizationofboundedmeasurablesetsasthesupportsofFouriertransformsofFMRA(W-typeFMRA)framescalingfunctionsandMRA(W-typeMRA)scalingfunctionsforFL2(Ω),respectively.Someexamplesarealsoprovided.

  • 标签: 傅立叶变换 应用 加细 有界可测集 傅里叶变换 缩放功能
  • 简介:Anexplicitfull-fieldexpressionoftheGreen’sfunctionsforanisotropicpiezoeleetricbimateri-alswithaslippinginterfaceisderived.Whentheelectro-elasticsingularityreducestoapraydislocationindisplacementandelectricpotential,interactionenergy,betweenthedislocationandthebimaterialsisobtainedexplicitlywhilethegeneralizedforceonthedisloeationisgiveninarealformwhiehisalsovalidfordegener-atematerials.Theinvestigationdemonstratesthatthehoundaryconditionsatlheslippinginterfacebetweentwopiezoelectricmaterialswillexertaprominentinfluenceonthemobilityofthedislocation.

  • 标签: HOLOMORPHIC function vector Stroh FORMALISM slipping
  • 简介:LetEbeacompacts-setsofR^n,TheauthorsdefineanorthonormalsystemФoffunctionsonEandobtainthat,foranyf(x)∈L^l(E1H^8),theFourierseriesoff1withrespecttoФ,isequaltof(x)atH^8-a.e-x∈E.Moreover,foranyf∈L^p(E,H^8)(p≥1),thepartialsumsoftheFourierseries,withrespecttoФ,offconvergestofinL^P-norm.

  • 标签: HAUSDORFF测度 FOURIER级数 S集 广义性
  • 简介:ThecontentsofbiogenicelementsinChinamarginalseasedimentsarerelatedtotheirgrainsizes,rivertransport,etal.Ingeneral,thefinerthegrainsizeis,thehigherthecontentsoforganicmatterandOC,N,Pare,thelowerthecontentsofSandSiare.ThebiogeochemicalenvironmentsofsedimentsarerelatedtoEh,pH,temperaturecontentofOC,Fe3+/Fe2+radio,waterdynamicscondition,grainsizeofsediment,Ssysteminsedimentinterstitialwaters,etal.,andtheyinfluencetheearlydiagenesesandcycleofbiogenicelementsinsediments.InmostregionsofChinamarginalsea,thefluxdirectionsofS2-,HS-,3-NH4+H4SiO4,PO4,acrossthesediment-waterinterfacearefromsedimenttotheoverlyingseawater,thefluxdirectionsofSO42-,HCO3-,NO3-,NO2-acrossthesediment-waterinterfacearefromtheoverlyingseawatertosediment.Theirrigationoflivingthingsisimportantinthecycleofthebiogenicelementsacrosssediment-waterinterfaces.

  • 标签: China MARGINAL sea sediment CYCLE ofbiogenic