简介：Differenceexpansion(DE)isoneofthefamousschemesinthefieldofreversibledatahiding.Withthehighefficiencyandsimplicity,DEalsohasreceivedmoreattentionovertheyears.DEhasagoodinformationcapacity,butduetoitsmajorlocationmap,thepurepayloadisratherlow.Thereforemanyscholarsdidrelevantimprovementswhichletnpixelsasaunitinsteadoftheoriginaltwopixelsasaunitandcanadaptivelyadjustthenumberofembeddingsecretinformationaccordingtothesmoothnessdegreeoftheblock,whichachievestheresultofimprovingtheinformationpayloadortheimagequality.Inthispaper,thestudyofDE-basedreversibledatahidingschemesiscomprehensivelydiscussed.TheperformanceofDEbasedschemesisevaluatedandcomparedintermsofembeddingcapacityandstego-imagequality.

简介：一个新奇photothermal开车方法被建议。新奇photothermal微致动器(PTA)与这个方法被开发。我们与不同宽度介绍了不对称的广泛的手臂的偏转机制。当红外线的激光的一根横梁照耀时，特定的表面区域的不同的率控制的手臂，不同增加温度和photothermal扩大引起放大侧面的偏转。1000渭m长度微致动器的一个原型被使用一个excimer激光micromachining系统，并且用聚丙烯材料生产。实验被执行了检查偏转的可行性，与象激活的外部力量来源的一根激光二极管(650nm)微致动器。结果证明没有严格地考虑尺寸或照耀的轻点的地点，致动器罐头实际上产生明显的侧面的偏转。偏转地位微致动器能被从0mW把激光力量改变到10mW从0渭m遥远地控制到14.33渭m。这种新奇PTA为操作相当简单、方便。它将为micro/nano-technology并且与大排水量/使活动力量和remotecontrolling的域里的应用程序是相当有用的。

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简介：Ananalysisofsolvingtheelectromagneticscatteringbyburiedobjectsusingvectorwavefunctionexpansionispresented.Forexpandingtheboundaryconditionsbothontheplanarair-earthinterfaceandonthesphericalsurface,theconversionrelationsbetweenthecylindricalandsphericalvectorwavefunctionsarederived.Hencethevectorwavefunctionexpansionisconvenientlyappliedtosolvethiscomplexboundary-valueproblem.Fortheexcitationofthein-cidentplanewaveandthedipoleabovetheearth,thescatterlngpatternsoftheburiedconductinganddielectricspheresarepresentedanddiscussed.

简介：Thispaperdiscussesthedefinitionsandpropertiesoftwokindsoffundamentalsymmetricfunctions,whicharebasedonAND-OR-NOTalgebraicsystemandAND-ExclusiveORalgebraicsystem,respectively.Baseduponit,somemappingtransformationmethodsbetweentwokindsofexpansioncoefficientsofanarbitrarysymmetric,functioninthecompletesetoftwofundamentalsymmetricfunctions.