简介：Inthispaper,weinvestigatestochasticasymptoticstabilityofthezerosolutionforcertainthird-ordernonlinearstochasticdelaydifferentialequationsbyconstructingLyapunovfunctionals.

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简介：Sufficientconditionshavebeenobtainedsothatallsolutionsofadifferentfourthorderdifferentialequationareboundedanduniformlybounded.

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简介：Measurementofthediameterofthefuelaerosoldropletisveryimportantinthedesignofnewtypeburnersandindiagnosticprocess,Diffractionmethodisoneofthemostusefulmeasuringproceduresinthiscase.AninvestigationsetupispresentedenablingthedeterminationofthesubstitutingdropdiameterinfuelaerosolstreamcreatedbyaeroengineinjectorstheresultsobtainedforK108-767,K108-012,37.03.9595,16.83.0310typesarepresented.

简介：GA-hardnessandinterdependencebetweengenesinthechromosomeareimportantquestionsinthestudyofgeneticalgorithms(GA).Traditionalmethods,whichareusedtomeasuretheinteractionbetweengenes,canonlyreflecttheextentofepistasisbetweenallgenesinthechromosome.Therefore,thedefinitionofthefitnesslandscapeofschemataisproposedinthispaper,andepistasismeasuresonthislandscapeofschemataareusedtoanalyzethedegreeofinterdependencebetweensomecertaingenelociinstudy.Someinformationbetweenthesesitescanbereflectedbysomecharactersofthefitnesslandscapeofschematawhicharecomposedofthesefixedsites.Thestrongertheinteractionbetweenthesesites,thelargerthevariationofthefitnessofschematawhosefixedsitescorrespondtothosesitesinstudy,andthemoreruggedthefitnesslandscapeoftheseschemata.Accordingtothedegreeofinteractionbetweenthesegivengeneloci,buildingblocksofGAcanbeanalyzedanddetermined,andfurthergeneticoperatorsandthestructureofGAcanbedesignedandadjustedtoimprovetheperformanceofGA.Atlast,alotofexperimentsincludingNK-modelsaredone,andresultsofempiricalanalysisshowthatthismethodiseffective.

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简介：<正>People’sGovernmentoftheprovinces,autonomousregionsandmunicipalitiesdirectlyunderthecentralgovernment,alltheministries,commissionsandagenciesundertheStateCouncil:TheOpinionsoftheNationalPopulationandFamilyPlanningCommissionandMinistryofFinanceonLaunchingaPilotProjectforRewardingandAssistingCertainRuralHouseholdsThatHavePracticedFamilyPlanninghasbeenapprovedbytheStateCouncilandisherebyforwardedtoyouforearnestimplementation.