简介：非教师学习，组织工会，记忆，和噪音抵抗是特征的，人工的免疫系统是聪明的信息处理的领域里的一个研究焦点。基于有免疫力的有机体和同种细胞的选择的基本原则，这篇文章介绍聚类自我改编的算法特征的polyclonal。根据算法的核心想法，在人工的免疫系统的各种各样的有免疫力的操作符在聚类的进程被采用；而且，聚类数字根据亲密关系功能被调整。再结合操作员的介绍能有效地在一张产生人口提高单个抗体的差异，以便为答案的寻找的范围被扩大，算法的早熟的现象被避免。而且，不一致的变化操作符的介绍提高适应性并且优化本地答案寻求的性能。同时，算法的集中被加速。另外，文章也由采用Markov链证明算法的集中。数据模拟实验的结果证明算法能够获得合理、有效的簇。

简介：Ageonetricalmoirémethodfordisplayingdirectlyisochromaticsandisoclinicsofadiametricallypressedcirculardiskispresented.ItisdemonstratedthatbyusingtwoidenticalordifferentWulffnets(orgrids)notonlythestressfieldsofacirculardiskcanbedisplayed,buttheu-andv-displacementfieldscanalsobeproduced.

简介：Anewauditorysystemmodelbasedonacombinationofphysiologicalandpsycho-logicalacousticdatahasbeenproposed.Thismodelconsistsofabankofnonuniformbandpassfilters,detectorsandmain-frequencychoosingmechanisms,theyactasbasilarmembranes,innerhaircellsandnervefibers,respectively.Combiningwiththeimprovedcriticalbandwidthpa-rameters,theinputtothismodelisanalogoustothepressureattheeardrum,andtheoutputofthismodelsimulatesvariousfeaturesofthefiringpattern.Thesynthesizerobtainstheresul-tantspeechbyuseofthesimpleaddingmethod.Computersimulationsshowthattheresultantspeechishighlyintelligibleandnatural.Theproposedmodeliscorrectandtheimprovementofthecriticalbandwidthparametersiseffective.

简介：Inbandpasssigmadeltamodulator,resonatoristhekeyblock.Thispaperproposedanewresonatorwhichcansimplifythecircuitimplementationwhendesigningbandpassmodulatorwithlowpassprototype.Theeffectoffinitegain,finitebandwidth,andpathmismatchontheresonatorisanalyzed.ThefunctionoftheproposedresonatorandthedeviredequationsaboutpathmismatchhavebeenverifiedbyswitchedcapacitorsoftwareSWITCAP.

简介：Thispaperaimsatprovidinganuncertainbilevelknapsackproblem(UBKP)model,whichisatypeofBKPsinvolvinguncertainvariables.AndthenanuncertainsolutionfortheUBKPisproposedbydefiningPENashequilibriumandPEStackelbergNashequilibrium.Inordertoimprovethecomputationalefficiencyoftheuncertainsolution,severaloperators(binarycodingdistance,inversionoperator,explosionoperatorandbinarybacklearningoperator)areappliedtothebasicfireworksalgorithmtodesignthebinarybackwardfireworksalgorithm(BBFWA),whichhasagoodperformanceinsolvingtheBKP.Asanillustration,acasestudyoftheUBKPmodelandthePEuncertainsolutionisappliedtoanarmamentstransportationproblem.

简介：Toseekforlower-dimensionalchaoticsystemsthathavecomplextopologicalattractorstructurewithsimplealgebraicsystemstructure,anewchaoticsystemofthree-dimensionalautonomousordinarydifferentialequationsispresented.Thenewsystemhassimplealgebraicstructure,andcandisplaya2-scrollattractorwithcomplextopologicalstructure,whichisdifferentfromtheLorenz's,Chen'sandLu¨'sattractors.Byintroducingalinearstatefeedbackcontroller,thesystemcanbecontrolledtogenerateahyperchaoticattractor.Thenovelchaoticattractor,hyperchaoticattractoranddynamicalbehaviorsofcorrespondingsystemsarefurtherinvestigatedbyemployingLyapunovexponentspectrum,bifurcationdiagram,Poincar′emappingandphaseportrait,etc.,andthenverifiedbysimulatinganexperimentalcircuit.

简介：Anovelfinite-difference(FD)approximationinfrequency-domainfortheMurboundaryconditionispresentedinthispaper.CombinedwiththeFDequationsderivedforinhomogeneousanisotropicmedia,thisboundaryconditionisconvenientandeffectivetobeappliedtotheEMscatteringbyelectricallylargeobjectsofcomplexmedia.Boththememoryrequirementandthecomputingtimearedramaticallysaved,comparedwiththeMM,withthecompressedstoragetechnique.Forthecasesofdifferentmedia,RCSofcircularandrectangularcylindersarecomputed.Goodagreementisobtainedbetweentheresultsbythismethodandthoseavailable.

简介：Amongtheavailableclusteringalgorithmsindatamining,theCLOPEalgorithmattractsmuchmoreattentionwithitshighspeedandgoodperformance.However,theproperchoiceofsomeparametersintheCLOPEalgorithmdirectlyaffectsthevalidityoftheclusteringresults,whichisstillanopenissue.Forthispurpose,thispaperproposesafuzzyCLOPEalgorithm,andpresentsamethodfortheoptimalparameterchoicebydefiningamodifiedpartitionfuzzydegreeasaclusteringvalidityfunction.TheexperimentalresultswithrealdatasetillustratetheeffectivenessoftheproposedfuzzyCLOPEalgorithmandoptimalparameterchoicemethodbasedonthemodifiedpartitionfuzzydegree.

简介：Theterahertztime-domainspectroscopy(THz-TDS)systemandtherelatedtechnologyandtheapplicationsinCapitalNormalUniversityarepresented.ThemostoftenusedTHz-TDSsystemasaspectroscopicmeasurementsetupinourlabisintroducedindetail,includingtheTHzradiationsource,theTHzdetectionmethodanditsmeasurement,andthecontrolsystem.THzspectraofvariousmaterialsissummarizedanddiscussed.Thesematerialsincludebutnotlimitedtotwokindsoftypicalmatter—theillegaldrugsandexplosives.Thebiologicalmacro-molecules,cosmeticsandfinechemicalmaterials,ediblepigmentsandfoodadditives,homocysteicacidandrelatedcompounds,heavyionsinsoil,Chinesemedicines,tobaccoandcrops,oilandchemicalproducts,carbonnanotubes,superconductors,andvarioussemiconductorsandtheirheterojunctions,arepresented.THzemissionsfromtheInAsandInNsemiconductorssurfacearecompared.THzspectralinvestigationofmetallicmeshstructuresissummarized.Finally,anoutlookofTHzspectroscopicapplicationsisgiven.

简介：Basedonaclassofbipolarsequenceswithtwo-valuesautocorrelationfunctions,anewfamilyofbipolarsequencesisconstructedanditscorrelationspectrumiscalculated.ItisshownthatthenewfamilyisoptimalwithrespecttoWelch'sboundandisdifferentfromthesmallsetofKasamisequences,whilebothofthemhavethesamecorrelationproperties.

简介：Theforcesensingresistor(FSR)anditsconstructionandcharacteristicaredescribed.Byusingtheoptimalelectronicinterface,theendresultwhichisadirectproportionalitybetweenforceandvoltageisobtained.Thecircuitsofapplicationforforceandpositionmeasurementsintheroboticcontrolaregiven.TheexperimentthatFSRsareplacedonthefingersofBH-1dexteroushandastactilesensorstomeasurethecontactingforcesshowsFSR'sforcesensitivityisoptimizedforuseinthecontrolofrobotcontactingwithenvironment.

简介：ＡＦｕｚｚｙＲｅａｓｏｎｉｎｇＳｙｓｔｅｍａｎｄＩｔｓＨｅｕｒｉｓｔｉｃＩｎｆｅｒｅｎｃｅＡｌｇｏｒｉｔｈｍＺｕｏＸｉａｏｄｅ＆ＬｉａｎｇＹｕｎＤｅｐｔ．ｏｆＢｕｓｉｎｅｓＡｄｍｉｎｉｓｔｒａｔｉｏｎ，ＪｉｎａｎＵｎｉｖｅｒｓｉｔｙ，Ｇｕａｎｇｚｈｏ...

简介：Thecombineduseofthephotoelectricandelectro-opticpropertiesofBSOcrystal(Bi12SiO20)leadstorealizespatiallightmodulation.Undersomecondition,BSOcrystalcanbecomebirefringentdependingonalocalilluminance.Therelationshipbetweenthedistributionsofanilluminanceandabirefringencewillbediscussed.Thisspatiallightmodulatorcanworkinreal-time.Theexperimentshows,inordertoincreasethesensitivityofBSOcrystal,anelectricfieldof6kV/cmatanatmospherepressureof15×10^5PashouldbeappliedtoBSOcrystal.WithBSOwehavemeasured3-dimensionaldeformationbymeansofreal-timeholography.

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：Byusingtwo-directionalS-roughsets,theconceptsof(f,f)-interferencegenerationand(f,f)-inter-ferencelawgenerationofknowledge,F-interferencegenerationandF-interferencelawgenerationoftwo-directionalS-roughsetsareproposed.Basedontheconceptsabove,therelationtheoremsbetweenF-interferencelossandF-interferencedegree,therelationtheoremsbetweenF-interferencelosslawandF-interferencedegreelaw,thediscernibilitytheoremsbetweenF-interferenceandF-interferencelawarepresented.Atlast,therecognitioncriterionofF-interferencelawanditsapplicationaregiven.

简介：Thecostfunctionforeigenstructuresextractionisdiscussedindetailinthispaper,onecanobtainthelargesteigenvectorbyminimizingthecostfunction.Inordertoobtainothereigenvectors,acovariancematrixseriesisconstructed.Ifonecomparesthecostfunctionwiththeenergyfunctionofaneuralnetworks,theneuralnetworkscanbeeasilyintroducedtoextracttheeigenvectors.Theoreticalanalysisandcomputersimulationsshowthattheproposedmethodisreasonableandfeasible.

简介：Ageneralizationofthelinguisticaggregationfunctions(oroperators)ispresentedbyusinggeneralizedandquasiarithmeticmeans.Firstly,thelinguisticweightedgeneralizedmean(LWGM)andthelinguisticgeneralizedorderedweightedaveraging(LGOWA)operatorareintroduced.Theseaggregationfunctionsuselinguisticinformationandgeneralizedmeansintheweightedaverage(WA)andintheorderedweightedaveraging(OWA)function.Theyareveryusefulforuncertainsituationswheretheavailableinformationcannotbeassessedwithnumericalvaluesbutitispossibletouselinguisticassessments.Theseaggregationoperatorsgeneralizeawiderangeofaggregationoperatorsthatuselinguisticinformationsuchasthelinguisticgeneralizedmean(LGM),thelinguisticOWA(LOWA)operatorandthelinguisticorderedweightedquadraticaveraging(LOWQA)operator.Wealsointroduceafurthergeneralizationbyusingquasi-arithmeticmeansinsteadofgeneralizedmeansobtainingthequasi-LWAandthequasi-LOWAoperator.Finally,wedevelopanapplicationofthenewapproachwhereweanalyzeadecisionmakingproblemregardingtheselectionofstrategies.

简介：Asatypicalcleanandrenewableenergy,windpowerisbecomingmoreandmorewidelyusedinelectricalindustry.However,itscharacteristicsofrandomandintermittenthavebroughtseriousproblemstothepowersystem,suchasvoltagefluctuationandinsufficientreactivepower.BasedontheK-meansclusteringalgorithm,thispaperclassifiesthedoubly-fedinductiongenerators(DFIG)accordingtotheoperationofpropellerpitchanglecontrol.Atthesametime,toobtaintheoptimalparameter,advancedparticleswarmoptimization(PSO)isused.ThenthedynamicmodelofDFIGunderthenetworkfaultconditionisbuilt.Whatismore,therolethatcrowbarcircuitplaysinlowvoltageridethrough(LVRT)isdiscussed.Finally,simulationsinDigSILENTverifythemodel.

简介：WiththedevelopmentofCMOSandMEMStechnologies,theimplementationofalargenumberofwirelessdistributedmicro-sensorsthatcanbeeasilyandrapidlydeployedtoformhighlyredundant,self-configuring,andadhocsensornetworks.Tofacilitateeaseofdeployment,thesesensorsoperateonbatteryforextendedperiodsoftime.Aparticularchallengeinmaintainingextendedbatterylifetimeliesinachievingcommunicationswithlowpower.Forbetterunderstandingofthedesigntradeoffsofwirelesssensornetwork(WSN),amoreaccurateenergymodelforwirelesssensornodeisproposed,andanoptimaldesignmethodofenergyeffcientwirelesssensornodeisdescribedaswell.DifferentfrompowermodelsevershownwhichassumethepowercostofeachcomponentinWSNnodeisconstant,thenewonetakesintoaccounttheenergydissipationofcircuitsinpracticalphysicallayer.Itshowsthattherearesomeparameters,suchasdatarate,carrierfrequency,bandwidth,Tsw,etc,whichhaveasignificanteffectontheWSNnodeenergyconsumptionperusefulbit(EPUB).Foragivenqualityspecification,howenergyconsumptioncanbereducedbyadjustingoneormoreoftheseparametersisshown.

简介：Thereexistsagreatdealofperiodicnon-stationaryprocessesinnatural,socialandeco-nomicalphenomenon.Itisveryimportanttorealizethedynamicanalysisandreal-timeforecastwithinaperiod.Inthisletter,awavelet-Kalmanhybridestimationandforecastingalgorithmbasedonstep-by-stepfilteringwiththereal-timeandrecursionpropertyisputforward.ItcombinestheadvantagesofKalmanfilterandwavelettransform.Utilizingtheinformationprovidedbymulti-sensoreffectively,thisalgorithmcanrealizenotonlyreal-timetrackinganddynamicmulti-stepfore-castingwithinaperiod,butalsothedynamicforecastingbetweenperiods,andithasagreatvaluetothesystemdecision-making.Simulationresultsshowthatthisalgorithmisvaluable.