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3 个结果
  • 简介:在这篇文章,为作为直径地小的电磁的包括的远地的察觉的一个拓扑的敏感框架被建立。在固定频率的电的远地的散布振幅的单个、多重的大小的盒子被考虑。算法的性能为定位包括以它的分辨率和敏感理论上被分析。关于测量和中等噪音的框架的稳定性被讨论。而且,signal-to-noise比率的量的结果被介绍。一些数字结果被介绍与单个、多重的大小说明建议框架的察觉能力。

  • 标签: 检测能力 灵敏度 拓扑 电磁 夹杂 散射振幅
  • 简介:Theelectromagneticbalanceheadisusedforbalancingtheelectricspindle.Thispaperanalyzestheinternalstructureoftheelectromagneticbalanceheadandintroducesthestructureofthecounterweightplateandtherangeofthebalanceinthemovingring.Theprincipleofhowtheelectromagneticfieldgeneratedbythestaticcoilactsonthemovingringisalsoinvestigated.ThemodelisbuiltinAnsoftMaxwellandtheexcitationparametersandboundaryconditionsaresetup.Throughtheanalysisofthemagneticfieldgeneratedbythestaticcoilinthepositionofthemovingring,itisverifiedthatthestaticloopcoilcandrivethecounterweightplate.

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  • 简介:Weconsideraquantumparticleasawavepacketinthecoordinatespace.Whentheconjugatewavepacketinthemomentumspaceisconsidered,wefindthatthegroupvelocitiesofthesetwowavepackets,whichdescribetheparticledynamics,areinagreementwiththeHamiltonequationsonlyifinthetimedependentphasesoneconsiderstheLagrangianinsteadoftheHamiltonianwhichleadstotheconventionalSchr?dingerequation.Wedefinearelativisticquantumprincipleassertingthataquantumparticlehasafinitefrequencyspectrum,withacutoffpropagationvelocitycasauniversalconstantnotdependingonthecoordinatesystem,andthatanytimedependentphasevariationisthesameinanysystemofcoordinates.Fromthetimedependentphaseinvariance,therelativistickinematicsisobtained.Weconsidertwotypesofpossibleinteractions:1)Aninteractionwithanexternalfield,byamodificationofthetimedependentphasedifferentialwiththetermsproportionaltothedifferentialsofthespace-timecoordinatesmultipliedwiththecomponentsofthisfieldfour-potential,and2)aninteractionbyadeformationofthespace-timecoordinates,duetoagravitationalfield.Fromtheinvarianceofthetimedependentphasewithfieldcomponents,weobtainamechanicalforceoftheformofLorentz’sforce,andthreeMaxwellequations:TheGauss-Maxwellequationsfortheelectricandmagneticfluxes,andtheFaraday-Maxwellequationfortheelectromagneticinduction.Whenthefourthequation,Ampère-Maxwell,isconsidered,theinteractionfieldtakestheformoftheelectromagneticfield.Foralowpropagationvelocityoftheparticlewaves,wegetapacketofwaveswiththetimedependentphasesproportionaltotherelativisticHamiltonian,asinDirac’sfamoustheoryofspin,andaslowly-varyingamplitudewithaphaseproportionaltothemomentumandthisvelocity.Intheframeworkofourtheory,thespinisobtainedasanallquantumeffect,withoutanyadditionalassumptiontothequantumtheory.When

  • 标签: Group VELOCITY MAXWELL EQUATIONS metric TENSOR