简介：Thebacktrackingsearchoptimizationalgorithm(BSA)isoneofthemostrecentlyproposedpopulation-basedevolutionaryalgorithmsforglobaloptimization.Duetoitsmemoryabilityandsimplestructure,BSAhaspowerfulcapabilitytofindglobaloptimalsolutions.However,thealgorithmisstillinsufficientinbalancingtheexplorationandtheexploitation.Therefore,animprovedadaptivebacktrackingsearchoptimizationalgorithmcombinedwithmodifiedHooke-Jeevespatternsearchisproposedfornumericalglobaloptimization.Ithastwomainparts:theBSAisusedfortheexplorationphaseandthemodifiedpatternsearchmethodcompletestheexploitationphase.Inparticular,asimplebuteffectivestrategyofadaptingoneofBSA’simportantcontrolparametersisintroduced.TheproposedalgorithmiscomparedwithstandardBSA,threestate-of-the-artevolutionaryalgorithmsandthreesuperioralgorithmsinIEEECongressonEvolutionaryComputation2014(IEEECEC2014)oversixwidely-usedbenchmarksand22real-parametersingleobjectivenumericaloptimizationbenchmarksinIEEECEC2014.Theresultsofexperimentandstatisticalanalysisdemonstratetheeffectivenessandefficiencyoftheproposedalgorithm.

简介：Anoveloptimizationalgorithmcalledstochasticfocusingsearch(SFS)forthereal-parameteroptimizationisproposed.Thenewalgorithmisaswarmintelligencealgorithm,whichisbasedonsimulatingtheactofhumanrandomizedsearching,andthehumansearchingbehaviors.Thealgorithm'sperformanceisstudiedusingachallengingsetoftypicallycomplexfunctionswithcomparisonofdifferentialevolution(DE)andthreemodifiedparticleswarmoptimization(PSO)algorithms,andthesimulationresultsshowthatSFSiscompetitivetosolvemostpartsofthebenchmarkproblemsandwillbecomeapromisingcandidateofsearchalgorithmsespeciallywhentheexistingalgorithmshavesomedifficultiesinsolvingcertainproblems.

简介：Thispaperoptimizestheburiedchannelcharge-coupleddevice(BCCD)structurefabricatedbycomplementarymetaloxidesemiconductor(CMOS)technology.TheoptimizedBCCDhasadvantagesoflownoise,highintegrationandhighimagequality.Thechargetransferprocessshowsthatinterfacetraps,weakfringingfieldsandpotentialwellbetweenadjacentgatesallcausethedecreaseofchargetransferefficiency(CTE).CTEandwellcapacityaresimulatedwithdifferentoperatingvoltagesandgapsizes.CTEcanachieve99.999%andthewellcapacityreachesupto25000electronsforthegapsizeof130nmandthemaximumoperatingvoltageof3V.

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简介：为综合的一个可行方法毫米波浪圆锥形的数组并且优化低跨极化是从远地的重叠原则的proposed.Starting，包括相互的联合和装的站台完成的元素的一条有效途径被用来计算远地的patterns.A坐标变换被使用创造极化数量，并且为元素的一个一般过程极化了模式转变是数字例子被给的performed.Corresponding和需要的sidelo

简介：Theobjectiveofsteganographyistohidemessagesecurelyincoverobjectsforsecretcommunication.Howtodesignasecuresteganographicalgorithmisstillmajorchallengeinthisre-searchfield.Inthisletter,developingsecuresteganographyisformulatedassolvingaconstrainedIP(IntegerProgramming)problem,whichtakestherelativeentropyofcoverandstegodistributionsastheobjectivefunction.Furthermore,anovelmethodisintroducedbasedonBPSO(BinaryParticleSwarmOptimization)forachievingtheoptimalsolutionofthisprogrammingproblem.Experimentalresultsshowthattheproposedmethodcanachieveexcellentperformanceonpreservingneighboringco-occurrencefeaturesforJPEGsteganography.

简介：Thispaperconiesupwithanewideathattriestooptimizetheperformanceofimagesegmentationalgorithmsbasedontheirobjectiveevaluationknowledge.Aprototypeexpertsystemisdesignedandimplementedaccordingtothisidea.Kxperimentalresultsindicatethatthissystemisfeasibleandpractical.Thisideaalsooffersanefficientapproachforalgorithmoptimizationofimageprocessingandanalysis.

简介：Thispaperreportsawind-poweredwaterpumpingsystemimplementedinruralsideofPakistan.ThedesignmethodologypresentedinthispapershallenhancetheefficiencyoftheexistingSavoniusturbine’sperformancebymodifyingitaerodynamically.BladeswithdifferenttwistanglesaredesignedinSolidEdgeandanalyzedusingcomputationalfluiddynamics(CFD)withANSYSFLUENTsoftware.Staticandrotationalanalysesareperformedtogetoptimizedtwistangleandresultsarehighlighted.Theperformancesoftheturbineinbothstaticandrotationalanalysesarecompared.

简介：Theoptimizationproblemisconsideredinwhichtheobjectivefunctionispseudolinear(bothpseudoconvexandpseudoconcave)andtheconstraintsarelinear.Thegeneralexpressionfortheoptimalsolutionstotheproblemisderivedwiththerepresentationtheoremofpolyhedralsets,andtheuniquenessconditionoftheoptimalsolutionandthecomputationalprocedurestodeterminealloptimalsolutions(iftheuniquenessconditionisnotsatisfied)areprovided.Finally,anillustrativeexampleisalsogiven.

简介：MultiwavelengthchirpedfiberBragggrating(MCFBG)isamorevaluableapproachtochromaticdispersioncompensation.AndadjustingthestructureofFBGwilloptimizetheperformanceofdispersioncompensatorin8×10Gb/sDWDMnetwork,whichisprovedbysimulatingcalculation.

简介：OptimizationofantennaarraypatternusedinaspaceborneSyntheticApertureRadar(SAR)systemisconsideredinthisstudy.Arobustevolutionaryalgorithm,Non-dominatedSortingGeneticAlgorithms(theimprovedNSGA-Ⅱ),isappliedonaspaceborneSARantennapatterndesign.Thesystemconsistsoftwoobjectivefunctionswithtwoconstraints.Paretofrontsaregeneratedasaresultofmulti-objectiveoptimization.AfterbeingvalidatedbyatestproblemZDT4,thealgorithmsareusedtosynthesizespaceborneSARantennaradiationpattern.ThegoodresultswithlowAmbi-guity-to-SignalRatio(ASR)andhighdirectivityareobtainedinthepaper.

简介：Thepropertyofsiliconmicro-capacitiveaccelerometerisanalyzedanddiscussedbyestablishingthemodelofthesensor,tolayabasisforoptimizationdesignofsensorsystemstructure.Discussedissuesincludethestaticmodelinganddynamicbehaviorofthetwocommnlyusedstructures,i.e.,double-cantileversupportedandfour-beamsupportedstructures,andalsothemeasurementrangeofthesedevices.

简介：聚合Mach-Zehnder肋骨波导的系统的分析基于计算和优化被介绍。模拟与有效索引方法(EIM)被执行并且二维(2-D)有限差别横梁繁殖方法(FD-BPM)。在连续聚合物层之间的大折射索引步被使用EIM减少，因此，计算的精确被保证。象Y连接角度和分离差距那样的波导的重要参数被讨论，他们与光力量繁殖和损失特征的关系在这篇论文被调查。优化结构的全部的损失是0.258dB。CLC数字TN252这个工程被基础为武器设备的进展研究节目支持，中国(资助No.02040105DZ02)。

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简介：DuringthecrystalgrownbyVBM,thesolid/liquidinterfaceconfigurationsgreatlyinfluencethequalityofas-growncrystals.Inthispaper,finiteelementmethod(FEM)wasusedtosimulatethegrowthprocessofCdZnTecrystal.Theeffectsofdifferentcruciblemovingratesandtemperaturegradientofadiabaticzoneoncrystalgrowthrateandsolid-liquidinterfaceonfigurationwerestudiedaswell.Simulationresultsshowthatwhencruciblemovesattherateofabout1mm/h,whichisnearlyequaltocrystalgrowthrate,nearlyflatsolid/liquidinterfaceandlittlevariationofaxialtemperaturegradientnearitcanbeattained,whicharewellconsistentwiththeresultsofexperiments.CdZnTecrystalwithlowdislocationdensitycanbebtainedbyemployingappropriatecruciblemovingrateduringthecrystalgrowthprocess.

简介：Anewefficientcouplingrelationshipdescriptionmethodhasbeendevelopedtoprovideanautomatedandvisualizedwaytomultidisciplinarydesignoptimization(MDO)modelingandsolving.Thedisciplinaryrelationmatrix(DRM)isproposedtodescribethecouplingrelationshipaccordingtodisciplinaryinput/outputvariables,andtheMDOdefinitionhasbeenreformulatedtoadoptthenewinterfaces.Basedonthese,auniversalMDOsolvingprocedureisproposedtoestablishanautomatedandefficientwayforMDOmodelingandsolving.Throughasimpleandconvenientinitialconfiguration,MDOproblemscanbesolvedusinganyofavailableMDOarchitectureswithnofurthereffort.SeveralexamplesareusedtoverifytheproposedMDOmodelingandsolvingprocess.ResultshowsthattheDRMmethodhastheabilitytosimplifyandautomatetheMDOprocedure,andtherelatedMDOframeworkcanevaluatetheMDOproblemautomaticallyandefficiently.

简介：Acceleratingtheconvergencespeedandavoidingthelocaloptimalsolutionaretwomaingoalsofparticleswarmoptimization(PSO).TheverybasicPSOmodelandsomevariantsofPSOdonotconsidertheenhancementoftheexplorativecapabilityofeachparticle.Thusthesemethodshaveaslowconvergencespeedandmaytrapintoalocaloptimalsolution.Toenhancetheexplorativecapabilityofparticles,aschemecalledexplorativecapabilityenhancementinPSO(ECE-PSO)isproposedbyintroducingsomevirtualparticlesinrandomdirectionswithrandomamplitude.Thelinearlydecreasingmethodrelatedtothemaximumiterationandthenonlinearlydecreasingmethodrelatedtothefitnessvalueofthegloballybestparticleareemployedtoproducevirtualparticles.TheabovetwomethodsarethoroughlycomparedwithfourrepresentativeadvancedPSOvariantsoneightunimodalandmultimodalbenchmarkproblems.ExperimentalresultsindicatethattheconvergencespeedandsolutionqualityofECE-PSOoutperformthestate-of-the-artPSOvariants.

简介：MostofthecurrentdeploymentschemesforWirelessSensorNetworks(WSNs)donottakethenetworkcoverageandconnectivityfeaturesintoaccount,aswellastheenergyconsumption.Thispaperintroducestopologycontrolintotheoptimizationdeploymentscheme,establishesthemathe-maticalmodelwiththeminimumsumofthesensingradiusofeachsensors,andusesthegenetical-gorithmtosolvethemodeltogettheoptimalcoveragesolution.Intheoptimalcoveragedeployment,thecommunicationandchannelallocationarefurtherstudied.Thentheenergyconsumptionmodelofthecoverageschemeisbuilttoanalyzetheperformanceofthescheme.Finally,theschemeissimulatedthroughthenetworksimulatorNS-2.Theresultsshowtheschemecannotonlysave36%energyav-eragely,butalsoachieve99.8%coveragerateundertheconditionof45sensorsbeingdeployedafter80iterations.Besides,theschemecanreducethefivetimesinterferenceamongchannels.

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简介：Inordertodesignacomplexlaserresonatorwithmulti-parameters,themethodofparticleswarmoptimization(PSO)algorithmisemployed.Theparametersinfluencingtheresonatorstabilityandmodesizedistributionaretakenintoconsideration,andthestabilitycriteriaindexandthemodesizedistributionareusedastargetvalues.TheabsolutevaluesofthedifferencesbetweenpracticalandthetargetvaluesaresetasthefitnessfunctionforthePSO.Byminimizingthefitnessfunction,alaserresonatorwiththeoptimizedcavityparameterscanbefound.TheanalysesforthedesignexampledemonstratethefeasibilityandvalidityofthePSOmethodinthecomputeraideddesignofmul-ti-parameterslaserresonator.ApplyingPSOalgorithmintheintelligentdesignofsolidstatelaserresonatorscanrealizethe.transitionfrommanualtrial-and-errortocomputerintelligentdesignofthelaserresonators.