简介:在光线的基础功能的理论,数学家们把光线的基础功能的translates的线性联合用作interpolants。这些线性联合的集合是一个normed向量空格。这个空格能被完成并且变得一个Hilbert空格,叫了本国的空间,它在最后十年是很重要的。本国的空格然后包含不是光线的基础函数的线性联合的一些抽象元素。这些抽象元素的意思充分不被知道。这份报纸为这些元素论述一些解释。本国的空格被嵌进一些著名空格。例如,Sobolev空间被显示是一个本国的空格。因为许多微分方程在Sobolev空间有答案,我们能因此接近由光线的基础功能的线性联合的答案。而且,嵌进本国的空间L2()的著名问题被作者也解决。
简介:TheNeighborhoodPreservingEmbedding(NPE)algorithmisrecentlyproposedasanewdimensionalityreductionmethod.However,itisconfinedtolineartransformsinthedataspace.Forthis,basedontheNPEalgorithm,anewnonlineardimensionalityreductionmethodisproposed,whichcanpreservethelocalstructuresofthedatainthefeaturespace.First,combinedwiththeMercerkernel,thesolutiontotheweightmatrixinthefeaturespaceisgottenandthenthecorrespondingeigenvalueproblemoftheKernelNPE(KNPE)methodisdeduced.Finally,theKNPEalgorithmisresolvedthroughatransformedoptimizationproblemandQRdecomposition.Theexperimentalresultsonthreereal-worlddatasetsshowthatthenewmethodisbetterthanNPE,KernelPCA(KPCA)andKernelLDA(KLDA)inperformance.
简介:AHFreceiverfordatatransmissionbasedonKalmanfilterandchannelestimatorisproposed.Thesimulationresultsshowthattheperformanceoftheproposedschemeisabout2dBbetterthanthatofDecision-FeedbackEqualizerbasedonSquare-RootKalmanAlgorithm(SRKA/DFE)anditscomputationalcomplexityislowerthanthatofMaximumLikelihoodSequenceEstimation(MLSE).
简介:Differenceexpansion(DE)isoneofthefamousschemesinthefieldofreversibledatahiding.Withthehighefficiencyandsimplicity,DEalsohasreceivedmoreattentionovertheyears.DEhasagoodinformationcapacity,butduetoitsmajorlocationmap,thepurepayloadisratherlow.Thereforemanyscholarsdidrelevantimprovementswhichletnpixelsasaunitinsteadoftheoriginaltwopixelsasaunitandcanadaptivelyadjustthenumberofembeddingsecretinformationaccordingtothesmoothnessdegreeoftheblock,whichachievestheresultofimprovingtheinformationpayloadortheimagequality.Inthispaper,thestudyofDE-basedreversibledatahidingschemesiscomprehensivelydiscussed.TheperformanceofDEbasedschemesisevaluatedandcomparedintermsofembeddingcapacityandstego-imagequality.
简介:ThisstudyfocusesontheanisotropicBesov-LionstypespacesBp,θl(Ω;E0,E)associatedwithBanachspacesE0andE.Undercertainconditions,dependingonl=(l1,l2,…,ln)andα=(α1,α2,…,αn),themostregularclassofinterpolationspaceEαbetweenE0andEarefoundsothatthemixeddifferentialoperatorsDαareboundedandcompactfromBp,θl+s(Ω;E0,E)toBp,θs(Ω;Eα).Theseresultsareappliedtoconcretevector-valuedfunctionspacesandtoanisotropicdifferential-operatorequationswithparameterstoobtainconditionsthatguaranteetheuniformBseparabilitywithrespecttotheseparameters.BytheseresultsthemaximalB-regularityforparabolicCauchyproblemisobtained.Theseresultsarealsoappliedtoinfinitesystemsofthequasi-ellipticpartialdifferentialequationsandparabolicCauchyproblemswithparameterstoobtainsufficientconditionsthatensurethesameproperties.
简介:(VNE)虚拟网络嵌入是网络虚拟化的必要部分,它为未来网络被看作最有希望的方法之一。它的主要对象是高效地分配一个虚拟网络(VN)的节点和到一个分享的底层网络(SN)的连接。NP难、退出的研究提出了几个启发式的算法。然而,大多数算法仅仅考虑节点的本地资源,例如中央处理器和带宽(BW),到决定嵌入,并且忽略网络属性的重要影响。基于全部网络的属性,在每个节点之间的连接的一个模型被提出测量节点,和一个新二阶段的嵌入算法评价的资源被建议。此后,印射的节点和印射的连接能联合被考虑。当减少运行时刻时,广泛的模拟证明建议算法由增加VN请求的收入/费用比率和接受比率改进VNE的性能。
简介:LetFF_vbethesetoffaultynodesinann-dimensionalfoldedhypercubeFQ_nwith|FF_v|≤n-1andallfaultyverticesarenotadjacenttothesamevertex.Inthispaper,weshowthatifn≥4,theneveryedgeofFQn-FF_vliesonafault-freecycleofeveryevenlengthfrom6to2~n-2|FF_v|.
简介:IT产业瞬息万变,每一次技术革新都会带来PC系统性能上的飞跃。CPU的主频已从8088时代飞升到了以GHz为单位的时代,甚至在Intel推出的最新CPU内核——Prescott中,其主频更是高达5GHz这个在以前看来近乎幻想的天文数字。与PC系统整体性能息息相关的内存也告别了EDO、SDRAM时代而进入双通道DDR甚至是DDRU的时代。但在系统硬件不断更新换代的同时,一个不个忽视的瓶颈也制约着整体系统发挥由最高性能,这就是硬盘的数据传输速度。在CPU和内存性能可谓暴涨时,传统的PATA(ParallelATA,并行ATA)接口方式的硬盘却将其传输速度限制在了最高的133MB/s(ATA133)上,显然这已不能满足系统的整体需要,业界也呼唤着硬盘接口方式的一次彻底变革。目前最有希望引领这次变革的,莫过于正在发展壮大中的SerialATA(SATA,串行ATA)了。
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简介:InordertoovercometheshortcomingoftheclassicalHungarianalgorithmthatitcanonlysolvetheproblemswherethetotalcostisthesumofthatofeachjob,animprovedHungarianalgorithmisproposedandusedtosolvetheassignmentproblemofserial-parallelsystems.Firstofall,byreplacingparalleljobswithvirtualjobs,theproposedalgorithmconvertstheserial-parallelsystemintoapureserialsystem,wheretheclassicalHungarianalgorithmcanbeusedtogenerateatemporalassignmentplanviaoptimization.Afterwards,theassignmentplanisvalidatedbycheckingwhetherthevirtualjobscanberealizedbyrealjobsthroughlocalsearching.Iftheassignmentplanisnotvalid,theconvertedsystemwillbeadaptedbyadjustingtheparametersofvirtualjobs,andthenbeoptimizedagain.Throughiterativesearching,thevalidoptimalassignmentplancaneventuallybeobtained.Toevaluatetheproposedalgorithm,thevalidoptimalassignmentplanisappliedtolaborallocationofamanufacturingsystemwhichisatypicalserial-parallelsystem.
简介:Thispaperproposesanewtechniquethatisusedtoembeddepthmapsintocorresponding2-dimensional(2D)images.Sincea2Dimageanditsdepthmapareintegratedintoonetypeofimageformat,theycanbetreatedasiftheywereone2Dimage.Thereby,itcanreducetheamountofdatain3Dimagesbyhalfandsimplifytheprocessesforsendingthemthroughnetworksbecausethesynchronizationbetweenimagesfortheleftandrighteyesbecomesunnecessary.Weembeddepthmapsinthequantizeddiscretecosinetransform(DCT)dataof2Dimages.Thekeytothistechniqueiswhetherthedepthmapscouldbeembeddedinto2Dimageswithoutperceivablydeterioratingtheirquality.Wetrytoreducetheirdeteriorationbycompressingthedepthmapdatabyusingthedifferencesfromthenextpixeltotheleft.Weassumethatthereisonlyonenon-zeropixelatmostononehorizontallineintheDCTblockbecausethedepthmapvalueschangeabruptly.Weconductanexperimenttoevaluatethequalityofthe2Dimagesembeddedwithdepthmapsandfindthatsatisfactoryqualitycouldbeachieved.