简介：摘要本文介绍CPC分类体系下涉及电话会议领域的分类号，将其与IPC分类体系下的分类号进行对比，分析CPC分类号检索的优势，并结合案例证明CPC在检索实践中的作用，为审查工作中提升检索效率提供参考。

简介：摘要本文介绍CPC分类体系下涉及无绳电话机领域的分类号，将其与IPC分类体系下的分类号进行对比，分析CPC分类号检索的优势，并结合案例证明CPC在检索实践中的作用，为审查工作中提升检索效率提供参考。

简介：Anovelsimply-structuredhybridsmartantennasystemsuitabletobeusedinad-hocnetworkterminalsisproposedinthisletter.Thesuper-resolutionbeamformingalgorithmisalsopre-sentedbasedonthesystemusingDOAestimationresults.Thealgorithmcanswitchthebeamformingtothedirectionoftheexpectedsignalandgetthebesttransmittingperformanceafterthepre-beamformingoftheButlermatrix.TheshiftingvalueformulasarepresentedtoobtainthebestSNRwhenthereisnointerferingsignalandtoacquirethehighestSignaltoInterferenceRatio(SIR)asthereisoneinterferingsignal.Whentherearemorethanoneinterferingsignals,thepre-beamformingfeatureoftheButlermatrixcanalsosuppresstheinterferingsignals.Simulationresultsverifiedthealgorithm.

简介：Super-Resolution(SR)techniquemeanstoreconstructHigh-Resolution(HR)imagesfromasequenceofLow-Resolution(LR)observations,whichhasbeenagreatfocusforcompressedvideo.BasedonthetheoryofProjectionOntoConvexSet(POCS),thispaperconstructsQuantizationConstraintSet(QCS)usingthequantizationinformationextractedfromthevideobitstream.BycombiningthestatisticalpropertiesofimageandtheHumanVisualSystem(HVS),anovelAdaptiveQuantizationConstraintSet(AQCS)isproposed.SimulationresultsshowthatAQCS-basedSRal-gorithmconvergesatafastrateandobtainsbetterperformanceinbothobjectiveandsubjectivequality,whichisapplicableforcompressedvideo.

简介：＊＊139业务是中国移动提供给国际／台港澳漫游用户使用的一种新业务。使用全新升级的＊＊139业务，由漫游所在地拨回祖国大陆，漫游话费全球统一调低至5．99元／分钟，超值优惠，即使身处国外也能尽情畅聊。

简介：灯光！摄影机!秀起来!这是Aspyr公司给我们带来模拟人生(TheSims)的第七个资料片，在这个奇妙的虚拟世界，玩家终于可以扮演明星，享受一下被“追星”的乐趣了。

简介：

简介：

简介：

简介：Tomakeuseofthepriorknowledgeoftheimagemoreeffectivelyandrestoremoredetailsoftheedgesandstructures,anovelsparsecodingobjectivefunctionisproposedbyapplyingtheprincipleofthenon-localsimilarityandmanifoldlearningonthebasisofsuper-resolutionalgorithmviasparserepresentation.Firstly,thenon-localsimilarityregularizationtermisconstructedbyusingthesimilarimagepatchestopreservetheedgeinformation.Then,themanifoldlearningregularizationtermisconstructedbyutilizingthelocallylinearembeddingapproachtoenhancethestructuralinformation.Theexperimentalresultsvalidatethattheproposedalgorithmhasasignificantimprovementcomparedwithseveralsuper-resolutionalgorithmsintermsofthesubjectivevisualeffectandobjectiveevaluationindices.

简介：Amodifiedaperture-synthesismethodisreportedtoimprovetheresolutionofareconstructedimageindigitalholographybyasinglehologram.Aseriesofsub-hologramsincoherentlyoverlappedonaCCDarerecordedasasingleaperturesynthesizeddigitalhologram.Theangulardivisionmultiplexingisintroducedtoboththeobjectandthereferencepathforholographicrecording.Thefinalsuper-resolvedimageisobtainedbysynthesizingtheseveralreconstructedimages.Intheexperiment,atwo-dimensionaltransparentUSAFresolutiontesttargetisused.Theresultdemonstratesthattheresolutionofthereconstructedimageisimprovedfrom16.00lp/mmto22.64lp/mminthehorizontaldirection.

简介：由于LSI、VLSI、ULSI的迅速发展及应用,电子设备,特别是电子计算机向着大容量、高速度、小体积的方向迅速发展,大幅度地提高PCB的组装密度,已变得越来越迫切。要提高PCB的组装密度,无非三个途径:一是降低导线线宽和间距,二是减小导通孔孔径,三是增加多层板的层数。但是,如果一味

简介：在印制板的化学沉铜过程中，用于中Tg基板的工艺流程和配方，在加工高Tg基板时会出现非钻孔腻污等常见现象引起的孔壁微裂纹。实验表明，在不改变溶液体系的情况下，通过改善化学沉铜工艺流程和优化配方两种方法，可以极大的改善高他印制板的孔壁微裂纹情况，其中化学沉铜槽的配方对孔壁微裂纹起到决定性的影响。

简介：2007年，中国移动总裁王建宙曾公开表示中国移动要进军互联网。两年后的2009年，作为中国移动探索移动互联网业务的探路石，139说客（139．com）于8月16日正式上线。在不到半年的时间里，139说客便已在全国拥有注册用户1500万，单是广东便拥有用户800万。在网站数不胜数的今天，这不能不说是一个异数。那么，139说客是什么？它与其他微博（t．sina．com．cn）网站有什么区别？有什么优势能使它突围而出，使众多手机用户成为其使用者？

简介：Anewmethodofsuper-resolutionimagereconstructionisproposed,whichusesathree-step-trainingerrorbackpropagationneuralnetwork(BPNN)torealizethesuper-resolutionreconstruction(SRR)ofsatelliteimage.ThemethodisbasedonBPNN.First,threegroupslearningsampleswithdifferentresolutionsareobtainedaccordingtoimageobservationmodel,andthenvectormappingsarerespectivelyusedtothosethreegrouplearningsamplestospeeduptheconvergenceofBPNN,atlast,threetimesconsecutivetrainingarecarriedontheBPNN.Trainingsamplesusedineachstepareofhigherresolutionthanthoseusedintheprevioussteps,sotheincreasingweightsstoreagreatamountofinformationforSRR,andnetworkperformanceandgeneralizationabilityareimprovedgreatly.Simulationandgeneralizationtestsarecarriedonthewell-trainedthree-step-trainingNNrespectively,andthereconstructionresultswithhigherresolutionimagesverifytheeffectivenessandvalidityofthismethod.

简介：Recently,atunablefiberBragggrating(FBG)wasdevelopedbyusingstress-responsivecolloidalcrystals.Inthispaper,wehavesimulatedtheapplicationofthesenanoparticlesintothesuper-structuredfiberBragggrating(SSFBG)writtenwithperfectsequencesderivedfromashortmaximal-lengthsequence.AtunableSSFBGwillbeavailabletoovercometheprohibitivetemperaturevariationoftheopticalcodecs.Nevertheless,wepresentedamethodtoimplementcoherenttimespreadingopticalcode-divisionmultiple-access(OCDMA)whereauniquecode(orperfectsequence)canbereusedandmixedwithdifferentwavelengthstoobtainatunablewavelength-divisionmultiplexing(WDM)system.Inordertomaximizethebinarythroughput,wehaveselectedauniqueshortmaximal-lengthsequencecomposedof7chipsthatcanbetunedwith7differentopticalwavelengths.Wefoundthousandsofdifferenttunablecombinationsthatpresentedpowercontrastratios(P/C)higherthan12dB.WhenaWDM-OCDMAsystemused2differentcombinationssimultaneously,theperfectbinarydetectionwitherrorcorrectioncodeswasachievedsuccessfully.ThetunableSSFBGwithcolloidalcrystalswillbeasimpleandgoodalternativechoiceforfiber-to-the-home(FTTH)communications.

简介：Thispaperdesignsa3mmradiometerandvalidatewithexperimentsbasedontheprincipleofpassivemillimeterwave(PMMW)imaging.Thepoorspatialresolution,whichislimitedbyantennasize,shouldbeimprovedbypostdataprocessing.Aconjugate-gradient(CG)algorithmisadoptedtocircumventthisdrawback.Simulationandrealdatacollectedinlaboratoryenvironmentaregiven,andtheresultsshowthattheCGalgorithmimprovesthespatialresolutionandconvergentrate.Further,itcanreducetheringingeffectswhicharecausedbyregularizingtheimagerestoration.Thus,theCGalgorithmiseasilyimplementedforPMMWimaging.

简介：本文着重介绍了两种IPv6下的MPLS应用，IPv4到IPv6过渡中的MPLS应用（6PE）和BGP／MPLSVPN的IPv6扩展（6VPE）．文中分别从控制层面和转发层面的实现机制上，对两种应用进行了简要阐述和对比分析。

简介：从4月1日起，中国移动在北京、上海、天津、沈阳、广州、深圳、厦门和秦皇岛8个城市正式启动国产3G技术TD-SCDMA（国产3G）的社会化测试和试商用，试商用的号段为157号段，首批放号总计6万个。

简介：DV，MPEG-1，MPEG-2，MPEG-4，QuickTime，RealSystem，VideoforWindows，WindowsMedia，Kinoma，AIFF，AAC，MP3，WAV，BMP，JPEG／JFIF，PICT，PNG，QuickTime图形文件(QTIF)，SGI图形文件，TGA图形文件，TIFF以及其他视频、音频．动画和静态图形格式以及3GPP视频和AAC音频，还包括了基于PDA掌上操作系统Palm的Kinoma影视格式。