简介:Theoptimizationpolicyofthepurchasepriceandtheprofitundervendormanagedinventory(VMI)isstudied.Forasalableproduct,supplychainmodeofVMIisestablished,whichisbasedondeterministicdemand,havinginitialstockandhavingstock-outcost.Withthefurtheranalysisofthemode,VMIisfoundtoincreaseprofitsofthebuyerintheshort-termmotivation.ButVMIwillreduceprofitsofthesupplierunderthematchingcondition.Andintheshorttermmotivation,VMIwillincreasethepurchasepricetocompensatethetransfercostofthesupplier.Asaresult,thefoundationoftheoryisprovidedtoimplementVMIinthesupplychain,andhavesomedefinitudedprojectsignificance.
简介:
简介:Thispaperpresentsatrustregionalgorithmwithnullspacetechniquefornonlinearequalityconstrainedoptimization.Consideringinthenullspacemethodsthat,theconvergentrateofrangespacestepisfasterthanthenullspacestepforthemostcases,theproposedalgorithmcomputesnullstepsmoreoftenthanrangespacestep.Moreover,thenewalgorithmisbasedonthereducedHessianSQPmethod.Globalconvergenceoftheproposedalgorithmisproved.Theeffectivenessofthemethodisdemonstratedbysomenumericalexamples.
简介:Furnaceareaisregardedaslooperbetweencastingandhotrolling,whichisveryimportantformaterialflowbalanceandproductionorganizationaswellastemperatureregulationetc.Inparticular,whendealingwithenergysavingandemissionreductionandheatingqualityimproving,pre_heatingfurnaceispaidmoreattention.Theradicaltargetforpreheatingfurnaceistotransferheatingenergyattheleastcost.Asweknow,thepreheatingfurnaceisadissipationsystemtoobeyconservationofenergylaw,thatistosaythatinputenergyalwaysequalstooutputenergy,inthemeantime,thewholeenergyconsumingisnotreversible.Thereforeincreasingtheefficiencyofusingenergyisuppermost.Inthispaper,heatingtransferefficiencyisanalysedandmathematicalexpressionisgivenbasedonconservationofenergylaw.Typicaloptimalmethodstoimprovepreheatingfurnacetransferefficiencycomingfromforeignfactoriesarepresented.Accordingtothesemethods,everyfurnacezonetemperaturesascontrolvariable,targetdischargingtemperatureandtemperaturedifferenceinslabthicknessandthetemperaturebetweenneighbouringzonesaswellaszonetemporarytemperatureasrestrictions,minimalenergyconsumingasoptimizingtarget.Baosteelpreheatingfurnacemodelstructureandthecomplicatedmappingrelationofcontrolparametersetandstatesetandaimsetarepresented.Importantbasicmodelsinthepreheatingfurnacemodelsystemareanalysedincludingtemperaturetrackingmodelandtemperatureforecastingmodelanddischargingpacingmodelandslabheatingcurve.Firstslabtemperaturemodelstructureanditsperiphericparameterareintroduced;secondtwopacingmodelsaregivenincludingtimingpacingmodeusingfixeddischargingintervalandmillpacingcontrolmodeusingmillrollingpacingwhileBaosteelpacingforecastingmodelusinglongtermandshorttermforecastingmode)isgiven;thirdaheatingcurvemathematicalmodelconsideringheatingqualityandrollingpaceandenergyconsumingispresented;
简介:Transmissionperformanceofelectroabsorptionmodulatorin10Gb/stransmissionsystemshasbeensimulatedandanalyzedundertheconditionoftakingintoaccountthechirp,extinctionratio,transmissivityandrise/falltime.ResultsshowthatshorttransmissiondistancewithoutEDFAafterEAMcanbeusedinfuturemetropolitanareanetwork,butthetransmissivitymustbecarefullyconsidered.Thesamplingtimerangeanddecisionlevelcanbeoptimizedtoreducethebiterrorratio.
简介:Usinggeneralizedunivexfunctions,anondifferentiablemultiple-objectiveoptimizationproblemisconsidered.Kuhn-Tuckertypesufficientoptimalityconditionsareobtainedforafeasiblepointtobeanefficientorproperlyefficientsolution.Mond-Weirtypedualityprogrammingisconstructed,theweakandstrongdualitytheoremsareproved.
简介:在这份报纸,混合自动优化策略为设计被建议在水下机器人线。Isight作为一个集成平台被介绍。这个平台的构造包括UG6.0,GAMBIT2.4.6和FLUENT12.0基于用户编程和几个商业软件。一个聪明的参数优化方法,粒子群优化,被合并到平台。为了验证策略,求婚了,模拟被进行在上在水下机器人为5470建模,它从DTRCSUBOFF工程发源。与自动优化平台,最小的抵抗作为优化目标被拿;是的湿表面区域限制条件;象设计变量的船身前半部,最大的身体半径和船体后部最小半径的长度。随CFD计算,RANS方程和标准骚乱模型被用于直接数字的模拟。由模拟结果的分析,平台效率高,这被结束。通过平台,为线的设计的许多计划被产生,最佳的解决方案被完成。聪明的优化算法和数字模拟的联合保证一个全球最佳的答案并且改进寻找的答案的效率。
简介:ItisdifficulttodesignaplatewithwideattenuationzonesinlowfrequencyregionbasedonBraggscatteringmechanism.Aplatewithperiodicrhombusholesisoptimizedanddesigned.Basedonthefiniteelementmethodunderperiodicboundaryconditions,thein-planedispersioncurvesofperiodicallyperforatedplatearecalculatedviaCOMSOL.ThefrequencyresponsesofperiodicallyperforatedplateareinvestigatedviaANSYSsimulation.Theplateswithperiodicholesaresuspendedanddynamicallytestedundersinusoidalexcitations.Theresultsshowthataperiodicallyperforatedplatewithrhombusholeshaswiderattenuationzonesthanplateswithcircularandhexagonalholes.Materialpropertieshaveagreatinfluenceonattenuationzones:nitrile-butadienerubberandsiliconrubbercaneasilyobtainlow-frequencyzones,whileincreasingporositycreateslowerandwiderzones.Thewidthofattenuationzoneincreasesasthehorizontalangleoftherhombusholesincreases.Ananalysisoftheattenuationzones'generationmechanismshowsthattheplatewithperiodicholesexhibitscharacteristicsofBraggscatteringandlocalresonantphononiccrystal,indicatinganinherentrelationshipbetweentwotypesofmechanisms.Theoptimizedplatehasacompleteattenuationzonerangingfrom5281.76-8824.30Hz.Thevibrationsaresignificantlyreducedwhenthenumberofperiodsisnolessthantwo.Theattenuationrangeobtainedviathenumericalmethodisgenerallyconsistentwiththeexperiment.Theresearchshedslightonthenoiseinsulationplateandhasthepotentialtoimprovethesoundenvironmentinvariousapplicationsduetoitssimplemanufacturing.
简介:小分子有铟听氧化物(ITO)的结构的器官的太阳能电池(振荡)/molybdenum三氧化物(MoO3)(5nm)/rubrene(nm)/fullerene(C70)(ynm)/2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline(BCP)(6nm)/aluminum(艾尔)(150nm)被制作。为设备的活跃的层的厚度在细节被调查。结果证明rubrene层和C70层的最佳厚度分别地是30nm和25nm。设备的降级也被调查。,结果显示开电路的电压(Voc)不变化电线走火电流密度(Jsc),用时间连续地填满因素(FF)和功率变换效率(PCE)减少。降级能在周围的扩散并且渗透到活跃材料并且在房间与C70反应被归因于氧,它能导致界面的系列电阻的增加。
简介:Structuraloptimizationforcrashworthinesscriteriaisofparticularsignificanceespeciallyatearlystageofdesign.ThecomparativestudyofKrigingandradialbasisfunctionnetwork(RBFN)wasperformedinordertoimprovethecrashworthinesseffectsofhoneycomb.ImprovingthecrashworthinesscharacteristicofhoneycombwasachievedusingLS-OPTanddomainreductionstrategy.Thisoptimizationisperformedonthebasisofvalidatednumericalsimulationtoestablishtheapproximatedmodeltoillustratetherelationshipbetweentheresponsesanddesignvariables.TheresultsshowedthatKrigingmeta-modelisexcelledinaccuracy,robustnessandefficiencycomparedtoradialbasisfunction(RBF)andcrashworthinesscharacteristicofhoneycombisimprovedby4%.
简介:Thisworkproposesamethodtoconcurrentlycalibratemultipleacousticspeedsindifferentmediumswithaphotoacoustic(PA)andultrasound(US)dual-modalityimagingsystem.First,physicalinfrastructureinformationofthetargetisacquiredthroughaUSimage.Then,werepeatedlybuildPAimagesaroundaspecialtargettoyieldthebestfocusedresultbydynamicallyupdatingtheacousticspeedsinadifferentmediumofthetarget.Withthesecorrectacousticpropagationvelocitiesintheaccordingmediums,wecaneffectivelyoptimizethePAimagequalityastheexperimentsproved,whichmightbenefitfutureresearchinbiomedicalimagingscience.
简介:ThispapergivesanewsubspacecorrectionalgorithmfornonlinearunconstrainedconvexoptimizationproblemsbasedonthemultigridapproachproposedbyS.Nashin2000andthesubspacecorrectionalgorithmproposedbyX.TaiandJ.Xuin2001.Undersomereasonableassumptions,weobtaintheconvergenceaswellasaconvergencerateestimateforthealgorithm.Numericalresultsshowthatthealgorithmiseffective.
简介:Toobtainasuitableconditionforelectroporationtransformationinindicarice,the10-day-oldimmatureembryoswereselectedforoptimizationexperiments.Theresultsshowedthatonepulseat850V/cm,950μFcapacitance,200μLelectroporationbufferwith70mmol/Lsodiumglutamate,100μg/mLplasmid,50μg/mLcarrierDNA,20embryospercuvette,0°CtreatmentandCCmediumwerethebestparameters,whichnotonlyimprovedthetransformationefficiencyto30.89%,butalsoamelioratedtheembryosurvivalratioto95.92%.Tofurtherverifythepracticabilityofthiscondition,theembryosfromanotherindicaricevarietyandaricetypeIImetallothionein-likegene(OsMT2bL)promoter::mgfp5::gusAconstructweretested,andspecificGUSexpressionontheembryoswasvisualizedbyhistochemicalstaining.TheresultsshowedthattheGUSexpressionontheembryosactivatedbytheOsMT2bLpromoterwasmainlyconcentratedontheapicalpointoftheplumulewhereastheexpressiondrivenbyCaMV35Spromoterwasdistributedonnearlyallareasoftheelectroporatedtissues.Theseresultsindicatedthattheoptimizedembryoelectroporationconditionscouldbeusednotonlyingenetictransformationofindicaricebutalsoinassayofgeneregulationonembryos.
简介:Theshiphullsurfaceoptimizationbasedonthewaveresistanceisanimportantissueintheshipengineeringindustry.Thewaveletmethodmayprovideaconvenienttoolforthesurfacehulloptimization.Asapreliminarystudy,weusethewaveletmethodtooptimizethehullsurfacebasedontheMichelwaveresistanceforaWigleymodelinthispaper.Firstly,weexpressthemodel’ssurfacebythewaveletdecompositionexpressionsandobtainareconstructedsurfaceandthenvalidateitsaccuracy.Secondly,werewritetheMichelwaveresistanceformulainthewaveletbases,resultinginasimpleformulacontainingonlytheshiphullsurface’swaveletcoefficients.Thirdly,wetakethesewaveletcoefficientsasoptimizationvariables,andanalyzethemainwaveresistancedistributionintermsofscalesandlocations,toreducethenumberofoptimizationvariables.Finally,weobtaintheoptimalhullsurfaceoftheWigleymodelthroughgeneticalgorithms,reducingthewaveresistancealmostbyahalf.Itisshownthatthewaveletmethodmayprovideanewapproachforthehulloptimization.
简介:由Ginchev在我们证明足够、必要的optimality条件的那一些的这篇文章获得了,Guerraggio,Luc[Appl。数学,51,5鈥?6(2006)]概括(严格地)那些由Guerraggio介绍了,Luc[J。Optim。理论Appl,109,615鈥?29(2001)]。当以前的纸显示出在那里给的条件是有效的为例子时但是从后者纸的失败,它不通常证明那它建议的条件更强壮。在现在的笔记,我们与缺乏的证明完成这比较。关键词C1,1功能-概括秒顺序方向性的衍生物-Dini衍生物-弱有效的minimizer-秒顺序先生(2000)题目分类49K10的孤立的minimizer-49J52-49J50-90C29-90C30由捷克的管理(MSM6198959214)的委员会支持了
简介:Microarraydataareoftenextremelyasymmetricindimensionality,suchasthousandsoreventensofthousandsofgenesbutonlyafewhundredsofsamplesorless.Suchextremeasymmetrybetweenthedimensionalityofgenesandsamplescanleadtoinaccuratediagnosisofdiseaseinclinic.Therefore,ithasbeenshownthatselectingasmallsetofmarkergenescanleadtoimprovedclassificationaccuracy.Inthispaper,asimplemodifiedantcolonyoptimization(ACO)algorithmisproposedtoselecttumor-relatedmarkergenes,andsupportvectormachine(SVM)isusedasclassifiertoevaluatetheperformanceoftheextractedgenesubset.Experimentalresultsonseveralbenchmarktumormicroarraydatasetsshowedthattheproposedapproachproducesbetterrecognitionwithfewermarkergenesthanmanyothermethods.IthasbeendemonstratedthatthemodifiedACOisausefultoolforselectingmarkergenesandmininghighdimensiondata.