简介：Incontrasttothemainstreamofstudyingthechaoticbehaviorofagivenmap,constructingchaoticmaphasattractedmuchlessattention.Inthispaper,weproposesimpleanalyticalmethodforconstructingone-dimensionalcontinuousmapswithcertainspecificperiodicpoints.Further,weobtainresultsfortheexistenceofchaoticphenomenoninthesenseofLiandYorke.Someexamplesarealsoanalyzedusingtheproposedmethods.

简介：传记是然而，为普通的人知道众所周知的民族的表示的一个直接、广泛的方法，有差的知识让他们被认识到。在最近的年里，信息抽取(IE)技术被用来自动地与联机信息为任何人产生传记。关键挑战之一是能连接传记句子到相应实体的连接的实体(EL)。当前，使用的一般EL系统通常产生错误从实体名字变化和歧义发源。与一般文本相比，传记判决拥有唯一还很少学习了关系知识(RK)和时间的知识(TK)，它能足够地区分实体。这篇文章建议一个新统计框架为自动化传记建设把知识称为提高的EL(龙骨)系统。提高实体连接利用象PK和TK一样的常识的知识。Wikipedia数据上的龙骨的表演被评估。与最先进的方法相比，龙骨显著地改进实体连接的精确和召回，这被显示出。

简介：TheEnglishconstruction'XandY'referstothecoordinationoftwowordswithandasconjunction,XandYbeingofthesamepartofspeechandparallelmeanings.ThispaperisacognitivestudyofthelinearorderoftheEnglishconstruction'XandY'fromtheperspectivesofcognitivesalience,cognitiveiconicity,andcognitionofformalrules.Thelinearcharacteristicsof'XandY'arerevealedasfollows:1)salience-downgradingorder;2)chronologicaliconicity;3)cognitionofalphabeticorderandprosodicorder.

简介：Compressivesensing(CS)hasemergedasanovelsamplingframeworkwhichenablessparsesignalacquisitionandreconstructionwithfewermeasurementsbelowtheNyquistrate.AnimportantissueforCSistheconstructionofmeasurementmatrixorsensingmatrix.Anewdeterministicsensingmatrix,namedasOOC-B,isproposedbyexploitingopticalorthogonalcodes(OOCs),BernoullimatrixandSingerstructure,whichhastheentriesof0,+1and-1beforenormalization.Wehaveproventhatthedesigneddeterministicmatrixisasymptoticallyoptimal.Inaddition,theproposeddeterministicsensingmatrixisappliedtodirectionofarrival(DOA)estimationofnarrowbandsignalsbyCSarrays(CSA)processingandCSrecovery.TheoreticalanalysisandsimulationresultsshowthattheproposedsensingmatrixhasgoodperformanceforDOAestimation.ItisveryeffectiveforsimplifyinghardwarestructureanddecreasingcomputationalcomplexityinDOAestimationbyCSAprocessing.Besides,lowerrootmeansquareerror(RMSE)andbiasareobtainedinDOAestimationbyCSrecovery.

简介：Thepaperproposesanovelalgorithmtogettheencryptionmatrix.Firstly,achaoticsequencegeneratedbyChebyshevchaoticneuralnetworksisconvertedintoaseriesoflow-orderintegermatricesfromwhichavailableencryptionmatricesareselected.Then,ahigherorderencryptionmatrixrelatingrealworldapplicationisconstructedbymeansoftensorproductionmethodbasedonselectedencryptionmatrices.Theresultsshowthattheproposedalgorithmcanproducea'one-timepadcipher'encryptionmatrixwithhighsecurity;andtheencryptionresultshavegoodchaosandauto-correlationwiththenaturalfrequencyoftheplaintextbeinghiddenandhomogenized.

简介：ThislettergivesarandomconstructionforLowDensityParityCheck(LDPC)codes,whichusesaniterativealgorithmtoavoidshortcyclesintheTannergraph.TheconstructionmethodhasgreatflexiblechoiceinLDPCcode'sparametersincludingcodelength,coderate,theleastgirthofthegraph,theweightofcolumnandrowintheparitycheckmatrix.ThemethodcanbeappliedtotheirregularLDPCcodesandstrictregularLDPCcodes.Systemiccodeshavemanyapplicationsindigitalcommunication,sothisletterproposesaconstructionofthegeneratormatrixofsystemicLDPCcodesfromtheparitycheckmatrix.Simulationsshowthatthemethodperformswellwithiterativedecoding.

简介：AlgebraicimmunityisanimportantcryptographicpropertyofBooleanfunctions.Inthispaper,odd-variablebalancedBooleanfunctionswithoptimalalgebraicimmunityareobtainedbym-sequenceandconsequently,wegetbaseswithspecialconstructionsofvectorspace.Furthermore,throughswappingsomevectorsofthesetwobases,weestablishallkindsofodd-variablebalancedBooleanfunctionswithoptimalalgebraicimmunity.

简介：这篇文章提出一种平行、分布式的静态的扩充景色系统结构改进实时扩充模拟系统的表演。基于静态的登记技术，几组处理节点做平行景色图画拿，3D登记并且虚拟真实的合并。不同节点上的过程被播送的一致同步机制和网络控制。看法图象的宽地能从图象马赛克操作被获得并且由宽看法显示器系统显示了。详细系统建筑学，登记算法，方法怎么决定在每个过程节点之间的照相机位置和同步机制被介绍。实验结果能验证设计系统的好性能。

简介：Ageneralmethodofconstructingproxyblindsignatureisproposedbasedonmultilineartransform.Basedonthismethod,thefourproxyblindsignatureschemesarecorrespondentlygeneratedwithfourdifferentsignatureequations,andeachofthemhasfourformsofvariationsofsigns.Hencetherearesixteensignaturesinall,andallofthemareproxystronglyblindsignatureschemes.Furthermore,thetwodegeneratedsituationsofmulti-lineartransformarediscussed.Theircorrespondingproxyblindsignatureschemesareshown,too.Butsomeschemescomefromoneofthesedegeneratesituationsareproxyweakly-blindsignaturescheme.Thesecurityforproposedschemeisanalyzedindetails.Theresultsindicatethatthesesignatureschemeshavemanygoodpropertiessuchasunforgeability,distinguish-abilityofproxysignature,non-repudiationandextensivevalueofapplicationetc.

简介：Thispaperproposesasimplegeometricalraybasedapproachtosolvethestereocorrespondenceproblemforthesingle-lensbi-prismstereovisionsystem.Eachimagecapturedusingthissystemcanbedividedintotwosub-imagesontheleftandrightandthesesub-imagesaregeneratedbytwovirtualcameraswhichareproducedbythebi-prism.Thisstereovisionsystemisequivalenttotheconventionaltwocamerasystemandthetwosub-imagescapturedhavedisparitieswhichcanbeusedtoreconstructbackthe3-dimensional(3D)scene.ThestereocorrespondenceproblemofthissystemwillbesolvedgeometricallybyapplyingtheepipolargeometryconstraintonthegeneratedvirtualcamerasinsteadoftherealCCDcamera.Experimentsareconductedtovalidatetheproposedmethodandtheresultsarecomparedtothecalibrationbasedapproachtoconfirmitsaccuracyandeffectiveness.

简介：Inordertomeettheneedsofhigh-speeddevelopmentofopticalcommunicationsystem,aconstructionmethodofquasi-cycliclow-densityparity-check(QC-LDPC)codesbasedonmultiplicativegroupoffinitefieldisproposed.TheTannergraphofparitycheckmatrixofthecodeconstructedbythismethodhasnocycleoflength4,anditcanmakesurethattheobtainedcodecangetagooddistanceproperty.Simulationresultsshowthatwhenthebiterrorrate(BER)is10-6,inthesamesimulationenvironment,thenetcodinggain(NCG)oftheproposedQC-LDPC(3780,3540)codewiththecoderateof93.7%inthispaperisimprovedby2.18dBand1.6dBrespectivelycomparedwiththoseoftheRS(255,239)codeinITU-TG.975andtheLDPC(32640,30592)codeinITU-TG.975.1.Inaddition,theNCGoftheproposedQC-LDPC(3780,3540)codeisrespectively0.2dBand0.4dBhighercomparedwiththoseoftheSG-QC-LDPC(3780,3540)codebasedonthetwodifferentsubgroupsinfinitefieldandtheAS-QC-LDPC(3780,3540)codebasedonthetwoarbitrarysetsofafinitefield.Thus,theproposedQC-LDPC(3780,3540)codeinthispapercanbewellappliedinopticalcommunicationsystems.

简介：鉴于伪周期的低密度的同等值检查(QC-LDPC)的编码复杂性编码的问题，高，最小的距离不足够大它导致错误修正表演的降级，基于完成式，周期的差别设置的新不规则的type-IIQC-LDPC代码(CDS)被构造。这些type-IIQC-LDPC代码的同等值检查矩阵与0的重量由零个矩阵组成，有1的重量的circulant排列矩阵(CPM)和有2的重量(W2CMs)的circulant矩阵。在同等值检查矩阵的W2CMs的介绍使完成能改进错误的更大的最小的距离可能--代码的修正性能。这些代码的更黝黑的图没有girth-4，因此，他们有优秀译码集中特征。另外，因为同等值检查矩阵有伪双的斜结构，快编码算法能有效地减少编码复杂性。新type-IIQC-LDPC编码的模拟结果表演能完成更优秀的错误修正表演并且没在添加剂白人Gaussian噪音(AWGN)上有错误地板现象有和产品算法(矿泉)的隧道反复的译码。