简介:在这份报纸,我们与多重时间时期在一根计划地平线上为工程公事包选择问题开发一个扩大模型。模型为真实应用程序同时合并工程可分性和互相依赖的因素。工程可分性作为在文学被看作策略,不是一个不幸的事件,在选择为工程,和在充分执行的工程之中的工程互相依赖的古典概念的最好的实行时间表然后被扩大到执行工程的部分。再投资考虑的另外的限制,安装费用,集的势限制,领先关系并且安排也在模型被包括。为有效计算,等价物混合了整数建议模型的线性编程表示被导出。在四种情形下面的数字例子被举加亮建议模型的特征。特别地,工程可分性的积极效果第一次被显示出。
简介:Withoutassumptionsmadeonmotionstatesofmissileandtarget,anextendeddifferentialgeometricguidancelawisderived.Throughintroducingalineofsightrotationcoordinatesystem,thederivationissimplifiedandhasmoreexplicitphysicalsignificances.Theextendedlawistheoreticallyapplicabletoanyengagementscenarios.Then,onbasisoftheextendedlaw,amodifiedoneisdesignedwithouttherequirementoftargetaccelerationandanapproachisproposedtodeterminingtheapplieddirectionofcommandedmissileacceleration.Qualitativeanalysisiscarriedouttostudythecaptureperformanceandacriterionforcaptureisgiven.Simulationresultsindicatethetwolawsareeffectiveandmakeupthedeficiencythatpureproportionalnavigationsuitableforendoatmosphericinterceptionscannotdealwithhigh-speedmaneuveringtargets.Furthermore,thecorrectnessofthecriterionisvalidated.
简介:Amodifiedsequentiallinearprogrammingalgorithmispresented,whosesubproblemisalwayssolvable,fortheextendedlinearcomplementarityproblem(XLCP),theglobalconvergenceofthealgorithmunderassumptionofX-rowsufficiencyorX-columnmonotonicityisproved.Asaresult,asufficientconditionforexistenceandboundednessofsolutiontotheXLCPareobtained.
简介:Ageneralversionoftheinvertedexponentialdistributionisintroduced,studiedandanalyzed.ThisgeneralizationdependsonthemethodofMarshall-Olkintoextendafamilyofdistributions.Somestatisticalandreliabilitypropertiesofthisfamilyarestudied.Inaddition,numericalestimationofthemaximumlikelihoodestimate(MLE)parametersarediscussedindetails.Asanapplication,somerealdatasetsareanalyzedanditisobservedthatthepresentedfamilyprovidesabetterfitthansomeotherknowndistributions.
简介:WeextendtheobliqueprojectionmethodgivenbyY.Saadtosolvethegeneralizedleastsquaresproblem.Thecorrespondingobliqueprojectionoperatorispresentedandtheconvergencetheoremsareproved.SomenecessaryandsufficientconditionsforcomputingthesolutionortheminimumN-normsolutionofthemin||Ax-b||M2havebeenproposedaswell.
简介:Inthispaper,anewmodifiedextendedtanh-functionmethodispresentedforconstructingsoliton-like,periodicformsolutionsofnonlinearevolutionequation(NEEs).Thismethodismorepowerfulthantheextendedtanhfunctionmethod[Phys.Lett.A277(2000)212]andthemoditiedextendedtanh-functionmethod[Phys.Lett.A285(2001)355].AbundantnewsolutionsoftwophysicallyimportantNEEsareobtainedbyusingthismethodandsymboliccomputationsystemMaple.
简介:UE-Bézier(unifiedandextendedBézier)basisistheunifiedformofBézier-likebases,includingpolynomialBézierbasis,trigonometricpolynomialandhyperbolicpolynomialBézierbasis.SimilartotheoriginalBézier-likebases,UE-Bézierbasisfunctionsarenotorthogonal.Inthispaper,agroupoforthogonalbasisisconstructedbasedonUE-Bézierbasis.ThetransformationmatricesbetweenUE-Bézierbasisandtheproposedorthogonalbasisarealsosolved.
简介:WiththeredesignedjigsfortheThermecmastor-Zthermalsimulator,thefeasibilityofusing3kindsofGleeblespecimensintheThermecmastor-Zsimulatorwasinvestigated.ResultsshowthatGleeblespecimenscanbeusedintheThermecmastor-Zsimulator.ThetensiontestsintheGleebleandThermecmastor-Zsimulatorsproducedresultswiththesametrend,whichprovesthatthehightemperatureductilityofGleeblespecimenscanbereflectedbytheThermecmastorZsimulator.Inaddition,astheThermecmastor-Zsimulatoroffersawiderheatingzone,bettercross-sectionshrinkageandelongationofspecimenscanbeachievedunderthesametestconditions.
简介:ThepaperdefinesanextendedCesàrooperatorTgwithholomorphicsymbolgintheunitballBofCnasWhereg(z)=∑j=1∑nzjg/zjistheradialderivativeofg.Inthispaper,theauthorcharacterizesgforwhichTgisbounded(orcompact)ontheBlochspaceBandthelittleBlochspaceB0.
简介:Particleswarmoptimization(PSO)isanewheuristicalgorithmwhichhasbeenappliedtomanyoptimizationproblemssuccessfully.Attributereductionisakeystudyingpointoftheroughsettheory,andithasbeenproventhatcomputingminimalreductionofdecisiontablesisanon-derterministicpolynomial(NP)-hardproblem.AnewcooperativeextendedattributereductionalgorithmnamedCo-PSARbasedonimprovedPSOisproposed,inwhichthecooperativeevolutionarystrategywithsuitablefitnessfunctionsisinvolvedtolearnagoodhypothesisforacceleratingtheoptimizationofsearchingminimalattributereduction.ExperimentsonBenchmarkfunctionsandUniversityofCalifornia,Irvine(UCI)datasets,comparedwithotheralgorithms,verifythesuperiorityoftheCo-PSARalgorithmintermsoftheconvergencespeed,efficiencyandaccuracyfortheattributereduction.
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简介:Wepresenttheextendedhydrogenatomandmonopole-hydrogenatomtheorythroughgeneralizingtheusualhydrogenatommodelandwithamonopolemodelrespectively,inwhichY(sl(2))algebrasarerealized.WederivetheHamiltoniansofthetwomodelsbasedontheY(sl(2))andthegeneralizedPauliequation.TheenergyspectraofthesystemsarealsogivenintermsofYangianalgebraandquantummechanics.
简介:Amathematicalmodeltodeterminetheoptimalproductionlotsizeforadeterioratingproductionsystemunderanextendedproductinspectionpolicyisdeveloped.Thelast-Kproductinspectionpolicyisconsideredsothatthenonconformingitemscanbereduced,underwhichthelastKproductsinaproductionlotareinspectedandthenonconformingitemsfromthoseinspectedarereworked.Considerthattheproductsproducedtowardstheendofaproductionlotaremorelikelytobenonconforming,isproposedanextendedproductinspectionpolicyforadeterioratingproductionsystem.Thatis,inaproductionlot,productinspectionsareperformedamongthemiddleK_1itemsandafterinspections,allofthelastK_2productsaredirectlyreworkedwithoutinspections.Ourobjectivehereisthejointoptimizationoftheproductionlotsizeandthecorrespondingextendedinspectionpolicysuchthattheexpectedtotalcostperunittimeisminimized.Sincethereisnoclosedformexpressionforouroptimalpolicy,theexistencefortheoptimalproductioninspectionpolicyandanupperboundfortheoptimallotsizeareobtained.Furthermore,anefficientsolutionprocedureisprovidedtosearchfortheoptimalpolicy.Finally,numericalexamplesaregiventoillustratetheproposedmodelandindicatethattheexpectedtotalcostperunittimeofourproductinspectionmodelislessthanthatofthelast-Kinspectionpolicy.