简介：Westudythepropertiesofthethree-modeEinstein-Podolsky-Rose(EPR)eigenstateanditsapplicationinquantumdensecoding.Ourresultshowsthatthethree-modeEPReigenstateprovidesaconvenientwaytorealizequantumdensecodingwhenthequantumchannelisathree-modesqueezedstate.

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简介：Objectives:Polymerizationshrinkageofdentalcompositesremainsamajorconcerninrestorativedentistrybecauseitcanleadtomicro-crackingofthetoothanddebondingatthetooth-restorationinterface.Theaimofthisstudywastomeasurethefull-fieldpolymerizationshrinkageofdentalcompositesusingtheopticaldigitalimagecorrelation(DIC)methodandtoevaluatehowthemeasurementisinfluencedbythefactorsinexperimentsetupandimageanalysis.Methods:Fourcommercialdentalcomposites,PremiseDentine,Z100,Z250andTetricEvoCeram,weretested.Compositewasfirstplacedintoaslotmouldtoformabarspecimenwithrectangular-sectionof4mmmm,followedbythesurfacepaintingtocreateirregularspeckles.Curingwasthenappliedatoneendofthespecimenwhiletheotherpartwerecoveredagainstcuringlightforsimulatingtheclinicalcuringconditionofcompositeindentalcavity.Thepaintedsurfacewasrecordedbyacharge-coupleddevice(CCD)camerabeforeandaftercuring.Subsequently,thevolumetricshrinkageofthespecimenwascalculatedwithspecialistDICsoftwarebasedonimagecrosscorrelation.Inaddition,afewfactorsthatmayinfluencethemeasuringaccuracy,includingthesubsetwindowsize,specklesize,illuminationlightandspecimenlength,werealsoevaluated.Results:ThevolumetricshrinkageofthespecimengenerallydecreaseswithincreasingdistancefromtheirradiatedsurfacewithaconspicuousexceptionbeingthecompositePremiseDentineasitsmaximumshrinkageoccurredatasubsurfacedistanceofabout1mminsteadoftheirradiatedsurface.Z100hadthegreatestmaximumshrinkagestrain,followedbyZ250,TetricEvoCeramandthenPremiseDentine.Largersubsetwindowsizemadetheshrinkagestraincontoursmoother.Butthecostwasthatsomedetailsintheheterogeneityofthematerialwerelost.Verysmallsubsetwindowsizeresultedinalotofnoiseinthedata,makingitdifficulttodiscernthegeneralpatterninthestraindistribution.Speckle

简介：应用相关的多处理机system-on-chip(MPSoC)体系结构正在成为一个吸引人的解决方案处理逐渐地复杂的嵌入的应用程序，它要求性能良好和灵活可编程性。作为为MPSoC开发的一个有效方法，我们在场从高级Simulink开始的渐渐的精炼流动当模特儿到synthesizable和可执行的硬件和软件说明。建议方法论由五个不同抽象层次组成：Simulink联合了算法和体系结构模型(CAAM)，虚拟建筑学(VA)，精确建筑学(TA)，虚拟原型(VP)和地可编程的门穿的transactional(FPGA)模拟。建议渐渐的精炼流动的Motion-JPEG和H.264表演的试验性的结果能从一个原来的Simulink模型产生各种各样的MPSoC体系结构，允许处理器，通讯和任务设计空格探索。

简介：DSPsarewidelyusedindataacquisitionsystemsonneutronspectrometersattheIBR-2pulsedreactor.Inthisreportseveralelectronicblocks,basedontheDSPoftheTMS320CXXXXfamilybytheTIfirmandintendedtosolvedifferenttasksinDAQsystems,aredescribed.

简介：ChargedparticlediagnosticsisoneoftherequiredtechniquesforimplosionarealdensitydiagnosticsattheSG-IIIfacility.Severalprotonspectrometersareunderdevelopment,andsomepreliminaryarealdensitydiagnosticshavebeencarriedout.Theresponseofthekeydetector,CR39,tochargedparticleswasinvestigatedindetail.Anewtrackprofilesimulationcodebasedonasemi-empiricalmodelwasdeveloped.TheenergyresponseoftheCR39detectorwascalibratedwiththeacceleratorprotonsandalphasfroma241Amsource.AprotonspectrometerbasedonthefilteredCR39detectorwasdeveloped,andD–Dprimaryprotonmeasurementswereimplemented.Asteprangefilterspectrometerwasdeveloped,andpreliminaryarealdensitydiagnosticswascarriedout.AwedgedrangefilterspectrometerarraymadeofSiwithahigherresolutionwasdesignedanddevelopedattheSG-IIIfacility.AparticleresponsesimulationcodebytheMonteCarlomethodandaspectraunfoldingcodeweredeveloped.Thecapabilitywasevaluatedindetailbysimulations.

简介：Today,e-mailhasbecomepartofcommunication,andisthecoreofinformationpublicationamongtheenterprises.Soastocanreachtherapid,low-costandreliableemaildemand,manycompaniesandindividualsusetheserviceofferedbyLinuxasthesolutionsatisfyingthedemands.SondmailisafreewarewhichactsasmailserverinLinux.Theage-olddevelopmenthistoryofSendmailensuresitstransplantability,stabilityandthetechniquesupport.

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简介：同学们刚刚接触电学时往往对根据并联实物图画电路图以及根据并联电路图画对应的实物图感到困难．究其原因，还是没有掌握解题方法．下面本文将结合实例对这两类问题的解题方法作浅显的介绍．

简介：思维导图是以发散性思考为基础并以图文表征的一种思维工具,它能促进人们对已有的知识与经验进行相关性的联想并通过图示与关键词的形式来反映知识间的联系或层级关系,因此它在促进学生对知识的理解与记忆以及构建立体化知识与方法体系从而提高学习效率有着独特的功效.思维导图在物理复习教学中的应用主要体现在转变再认方式、贯通理解知识、引导知识梳理、探究题型方法这四个方面.

简介：文章首先对概念图的研究现状进行了概速，然后用概念图的形式阐释了其物理教学功能：可用作教师的整体备课，帮助师生逾越教学难点；可作学习的“脚手架”，能加速知识同化，促进知识整合;可用作教学评价及合作性学习。

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简介：Weproposedanewschemeofcontrollingsecond-harmonicgenerationbyenhancedKerrelectro-opticnonlinearity.WedesignedastructurethatcanimplementthecascadedPockelseffectandsecond-harmonicgenerationsimultaneously.Theenergycouplingbetweenthefundamentallightsofdifferentpolarizationsledtoalargenonlinearphaseshiftand,thus,aneffectiveelectro-opticnonlinearrefractiveindex.Theeffectivenonlinearitycanbeeitherpositiveornegative,causingthesecond-harmonicspectratomovetowardthecouplingcenter,which,inturn,offeredusawaytomeasuretheeffectiveelectro-opticnonlinearrefractiveindex.ThecorrespondingenhancedKerrelectro-opticnonlinearityismorethanthreeordersofmagnitudehigherthantheintrinsicvalue.Theseresultsopenadoortomanipulatethenonlinearphasebyapplyinganexternalelectricfieldinsteadoflightintensityinnoncentrosymmetriccrystals.

简介：这份报纸描述大小和快借助于一个单个传感器在一台低压力汽轮机(并行口)为骚乱紧张的决心采用的processing以后过程反应空气动力学的压力探查。钻塔与MTU飞行器的引擎在合作被设计，可观的努力被放进所有相关模型参数的调整。片计数比率，机翼方面比率，减少的massflow，减少的速度，入口骚乱紧张和雷纳兹数字被选择复制完整的规模LP汽轮机。大小被执行采用一种锁阶段的获得技术以便提供时间汽轮机转子下游的解决的流动地。全部的压力随机变化被有选择地过滤获得，在频率领域，确定的摇摆由于转子片和协调结构。骚乱紧张从在全部的压力和速度变化之间的反的Fourier变换和关联被导出。骚乱紧张的决心为操作汽轮机的条件的发动机代表允许在定子和转子之间的相互作用过程的讨论。

简介：Amicroturbo-expandercapableofhighworkingspeedwasspeciallymanufacturedforuseinanorganicRankinecycle(ORC).Aseriesoftestswereexecutedtoexaminetheperformanceofthemachine.Intheexperiment,themachinewastestedunderdifferentinletpressureconditions(0.2-0.5MPa).Datasuchasthecompressedairpressure,temperaturesoftheinletandtheoutlet,rotationalspeed,andelectricpowergenerationwereanalyzedtodiscoverunderlyingrelationships.Duringthetest,therotationalspeedofthemachinereachedashighas54000r/min,thepeakvalueofthetemperaturedropbetweentheinletandtheoutletreached42℃,themaximumelectricpowergeneratedbythemotor-generatorattachedtothemachinereached630W,andtheefficiencyofthemachinereached0.43.

简介：Inthispaper,moreefficient,low-complexityandreliableregionofinterest(ROI)imagecodecforcompressingsmoothlowtextureremotesensingimagesisproposed.WeexploretheefficiencyofthemodifiedROIcodecwithrespecttotheselectedsetofconvenientwaveletfilters,whichisanovelmethod.SuchROIcodingexperimentanalysisrepresentinglowbitratelossytohighqualitylosslessreconstructionwithtiminganalysisisusefulforimprovingremotesensinggroundtruthsur-veillanceefficiencyintermsoftimeandquality.Thesubjective[i.e.fair,fiveobserver(HVS)evaluationsusingenhanced3DpictureviewHypermemorydisplaytechnology]andtheobjectiveresultsrevealedthatforfastergroundtruthROIcodingapplications,theSymlet-4adaptationperformsbetterthanBiorthogonal4.4andBiorthogonal6.8.However,thediscreteMeyerwaveletadaptationisthebestsolutionfordelayedROIimagereconstructions.

简介：套住的协调人口(CPT)现象在量精确大小发现了普遍申请。各种各样的图案基于相应于线性Zeeman效果的狭窄的反响的光谱被表明了完成高效。在这篇文章，非线性的Zeeman87在linlin安装的Rb被调查。我们观察重新切开为在一个大磁场的两根磁性的敏感、磁性的感觉迟钝的CPT反响的线的现象。在磁性的敏感的线的重新切开提起一个实际问题到磁强计当另一个在大磁场为应用程序显示出一个好潜力时，在linlin安装工作了。我们基于磁性的感觉迟钝的线的非线性的裂口建议一个图案并且测试它的表演。它与线性的相比提供一个大得多的测量范围，提供为一个大动态范围被比较喜欢的原子磁强计的一种选择。

简介：选取覆盖桂林城区的美国Landsat5卫星TM图像,利用支持向量机SVM提取土地利用信息,同时与最大似然法、决策树和人工神经网络的分类结果比较,研究提高喀斯特城市遥感分类精度的方法,并分析1989~2006年桂林城区土地利用的变化。结果表明,SVM可提高喀斯特城市土地利用信息遥感分类的精度,可有效地动态监测喀斯特城市土地利用的变化。SVM的地物分类精度和Kappa系数最高,总体分类精度为91.7%,超过90%,Kappa系数为0.827,明显高于人工神经网络、决策树和最大似然法的分类结果。1989~2

简介：以“闪光二号”加速器硬X射线为辐照源,对腔体内系统电磁脉冲（systemgeneratedelectromagneticpulse,SGEMP）磁场环境的验证方法进行了研究。根据测量的“闪光二号”二极管的电压、电流,模拟了发射电子束能谱参数;结合辐射靶物理设计,建立了二极管阳极靶蒙特卡罗粒子输运计算模型,模拟了轫致辐射X射线场参数;采用时域有限差分（finitedifferencetimedomainmethod,FDTD）和粒子模拟（particleincell,PIC）方法,模拟了该射线环境中的腔体SGEMP磁场环境;将轫致辐射X射线参数及腔体SGEMP磁场环境的模拟结果与实验结果进行了比较。结果表明：从X射线源参数模拟开始的腔体内SGEMP数值模拟计算模型的实验验证方法是合理可行的。