简介：Thegeometricaltheoryofdiffraction(GTD),combinedwithFouriertransformation,hasbeenappliedtotheback-scatteringonafinite-lengthrigidcircularcylinderduetoanarrowsoundbeam.Thetheoreti-calresultsareconfirmedbythemodelexperiment.

简介：Byutilizinghardtemplatemethodtoadjustthemesoporelength,andalkaliactivationtogeneratemicropores,twohierarchicalporouscarbons(HPCs)wereprepared.Withcontrollingoftheirmesoporelengthandtheactivationconditions,thecomplexsystemcomposedbyHPCsandelectrolytewassimplifiedandtheeffectofmesoporelengthontheperformanceofHPCsaselectrodesinsupercapacitorswasinvestigated.Itisfoundthatwiththemesoporelengthgettingsmaller,theorderedareagetssmallerandthaggregationoccurs,whichiscausedbythehighsurfaceenergyofsmallgrains.HPCwithlongpore(HPCL)exhibitsadonut-likemorphologywithwell-definedorderedmesoporesandaregularorientationwhileinHPCwithshortpores(HPCS),shortmesoporesareonlyorderlydistributedinsmallregionsLongerorderedchannelsformunobstructedwaysforionstransportintheparticleswhileshorterchannels,onlyorderlydistributedinsmallareas,resultsinblockedpaths,whichmayhindertheelectrolytionstransport.Duetotheunobstructedstructure,HPCLexhibitsgoodratecapabilitywithacapacitancretentionrateover86%ascurrentdensityincreasingfrom50mA/gto1000mA/g.ThespecificcapacitanceofHPCLderivedfromthecyclicvoltammetrytestat10mV/sisupto201.72F/g,whilethespecificapacitanceofHPCSisonly193.65F/g.

简介：Anadaptiveapproachtoselectanalysiswindowparametersforlinearfrequencymodulated(LFM)signalsisproposedtoobtaintheoptimal3dBsignal-to-noiseratio(SNR)intheshorttimeFouriertransform(STFT)domain.AfteranalyzingtheinstantaneousfrequencyandinstantaneousbandwidthtodeducetherelationbetweenthewindowlengthanddeviationoftheGaussianwindow,high-orderstatisticsisusedtoselecttheappropriatewindowlengthforSTFTandgettheoptimalSNRwiththerighttime-frequencyresolutionaccordingtothesignalcharacteristicunderafixedsamplingrate.Computersimulationshaveverifiedtheeffectivenessofthenewmethod.

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简介：有磁力地稳定的床是受到液体驱动的变丑并且由有磁力地导致的interparticle力量控制了的包装的床。这份报纸作为可变形的多孔的媒介处理有磁力地稳定的床并且在灰尘过滤描述他们的申请。放大法律的RichardsonZaki，U/Ut=n描述这块地经由代表n的控制的床扩大，那产出孔依赖者流动长度规模dc=dpn。纸处理二个问题：由假定同类的床扩大和床变量流动长度规模的一个定义的(i)变丑特征；(ii)清扫象以可变流动长度规模表示并且由试验性的数据说明了的过滤器系数，特定的存款和过滤效率那样的过滤特征。

简介：由离子的第二代的高温度的超导的磁带的准备帮助横梁的免职(IBAD)要求扁平的金属底层。在这个工作，长长度的HastelloyC-276合金的电气化学的擦亮被学习，并且它的过程参数，描绘的粗糙和另外的性质被调查。A10-meter-longHastelloyC-276合金被电气化学的擦亮准备。下列优化处理参数被获得：45的温度？？

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简介：Inthispaper,westudytheexistenceof0-1universalminimaltotaldominatingfunctionsinagraph.Weestablishaformulationoflinearinequalitiestocharacterizeuniversalminimaltotaldominatingfunctionsandshowthatforakindofgraphswhoseadjacentmatricesarebalanced,theexistenceofuniversalminimaltotaldominatingfunctionscoincideswiththatof0-1ones.Itisalsoprovedthatforgeneralgraphs,theproblemoftestingtheexistenceof0-1universalminimaltotaldominatingfunctionsisNP-hard.

简介：TakingthetransportoftotalphosphorpollutantsintheBeijingMiyunreservoirforexample,wehaveobtainedthreedimensionaldistributingregularityoftotalphosphorpollutantsbythecalculationofthelinearinterpolationvalueofeachpointbetweenhorizontallayers.Thecredibilityanalysisinallusiontothismethodwascarriedoutandtheprogrammingschemeforrealizingthismethodwassetforth.

简介：Inthispaper,weproposethenestedtotoalleastsquatresproblem(NTLS),whichisanextensionoftheequalityconstrainedleastsquaresproblem(LSE).TheformulationoftheNTLSproblemisgivenandthesolutionsetoftheNTLSproblemisobtained.TheleastsquaresresidualsandtheminimalnormcorrectionmatricesoftheNTLSsolutionareprovidedandaperturbationanalysisoftheNTLSsolutionsisgiven.

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简介：BackgroundEnd阶段脚关节关节炎损害联合功能和病人活动性。全部的脚关节代替是一个外科的过程对待严重脚关节关节炎。SaltoTalaris解剖脚关节TM(STAA)被设计模仿正常脚关节解剖和脚关节运动的屈曲/扩展。这研究的目的是与结束阶段在gait.MethodsFive病人期间在脚关节关节功能和力学上检验STAA脚关节代替的效果单方的脚关节关节炎被招募。病人们执行了水平在2个场合上走在一个实验室背景，在以前并且在STAA脚关节手术以后的3个月。美国矫形的脚和脚关节社会(AOFAS)hindfoot分数被获得。A12照相机运动俘获系统被用来执行走的分析。步法temporo空间的参数和脚关节关节力学被评估。配对的学生t测试和非参量的Wilcoxon匹配测试被执行在在外科前和外科以后的走conditions.ResultsCompared之间的biomechanical变量检验差别到pre外科的条件，在3月post-STAA外科，病人们在AOFAShindfoot经历了更大的改进分数(p=0.0001)；STAA脚关节证明31%在脚关节关节旅行(p=0.045)增加，22%在脚关节plantarflexor时刻(p=0.075)增加，60%尽最大努力增加吸收(p=0.023)，并且68%尽最大努力增加生产(p=0.039)。病人们也证明26%在走速度(p=0.005)增加，迈进长度(p=0.013)的20%增加，在两倍支持时间(p=0.043)的15%减少，和在全部的位置的5%减少预定(p=0.055)在手术以后的.ConclusionThree月，STAA病人在脚关节功能和步法参数经历了改进。STAA脚关节在象走那样的每日的活动期间表明了改进脚关节力学。

简介：AccordingtothestatisticaldatafromtheStatisti-calDepartmentofTibet,theTibetAutonomousRe-gionboastedapopulationof2736800peopleattheendof2004,anincreaseof35100overthepreviousyear.Thebirthrateandthenaturalpopulationgrowthwere17.4%and11.2%respectively.Inthepasthalfacen-

简介：在有水平运动污迹的这幅纸图象，垂直运动污迹和angled运动污迹被考虑。我们构造几个差别计划到高度非线性的术语吗？?

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