简介:SevereoperationalproblemsofsedimentdepositionhavefrequentlyoccurredinstormwatersewersystemsinShanghaicityduetotheflattopographyoftheareaandseriousillicitconnections.Tocontrolsewersedimentanditssubsequentialproblems,optimizedoperationplanswereproposedandaninnovativeperformanceassessmentmethodwasdeveloped.Simula-tionresultsdemonstratedthat,throughchangingthewayofpumpoperationandinstallingnecessaryactuatorsinthesystem,theoptimizedoperations,especiallybatchintermittentinterceptplan,effectivelyimprovedtheflowvelocityintheentiresystemindry-weathercondition.Inconclusion,theoptimizedoperationisaninnovativeideaforimprovingtheperformanceandsolvingtheproblemofsedimentdepositioninthesewersysteminShanghai,China.
简介:Learningiswidelyusedinintelligentplanningtoshortentheplanningprocessorimprovetheplanquality.Thispaperaimsatintroducinglearningandfatigueintotheclassicalhierarchicaltasknetwork(HTN)planningprocesssoastocreatebetterhighqualityplansquickly.TheprocessofHTNplanningismappedduringadepth-firstsearchprocessinaproblem-solvingagent,andthemodelsoflearninginHTNplanningisconductedsimilartothelearningdepth-firstsearch(LDFS).Basedonthemodels,alearningmethodintegratingHTNplanningandLDFSispresented,andafatiguemechanismisintroducedtobalanceexplorationandexploitationinlearning.Finally,experimentsintwoclassicaldomainsarecarriedoutinordertovalidatetheeffectivenessoftheproposedlearningandfatigueinspiredmethod.
简介:稀少的代码多重存取(SCMA)是为下一活动通讯的一个竞争nonorthogonal存取计划。作为分享系统的一个多用户,SCMA采用为在接收装置译码计划传递算法(MPA)的消息,但是它的反复的方法导致高计算的复杂性。因此,基于可变节点(VMPA)传递算法的一条连续消息在这份报纸被建议。在原来的MPA使一些成为微妙的改变到消息更改,VMPA能极大地减少译码计划的全面计算复杂性。而且,考虑那连续结构可以增加译码延期,一个新奇组织计划基于稀少的矩阵被用于VMPA。模拟结果证实新算法,作为组织VMPA(G-VMPA)称为,能比MPA完成在小点错误率(BER)和计算复杂性之间的更好的折衷。
简介:Highereducationisaverycriticallinkincultivatingceramicexperts.Whatisthecurrentsituationwiththeceramicdisciplineintheinstitutionsofhighereducation?Isthearrangementoftheceramicdisciplineinlinewiththedemandfortalent?Whatarethedifficultiesfacingceramictalentcultivation?Let'stakeacloserlookattheseissues.
简介:Location of Tibetan earthquakes──a nonlinear approach by a simplex optimized technique(赵珠)(丁志峰)(易桂喜/)(王建格)LocationofTibetanea...
简介:TheAODisbyitsverynatureandpurposealargegeneratorofCO2.ThetotalCO2emissionfromtheprocesscanbedividedintotwoparts-thedirectpartwhichisproportionaltothecarbonremovalfromthemetalandtheindirectpartwhichisrelatedtotheconsumptionofadditivessuchasreductionagents,slagformersandalloys.TheproductionoftheadditivestypicallyrequiredforaheatcauseslargeemissionsofCO2,infact,oftenlargerthanwhatisgeneratedfromthedirectpart.Byapplyingareal-timeadaptiveoptimizationoftheoxygentoinertgasratiooversmalltimeincrements,theoverallcarbonremovalefficiencyisincreasedwhiletheconsumptionofreductionagentsandslagformersaredecreased.ThisremovesunnecessaryproductioncostsandminimizesthetotalemissionofCO2.Inthispaperaprocessconceptwithoptimizedgasadministrationoveralargenumberoftimeincrementsiscomparedwithamoretraditionalprocesspractice.TheworkisbasedonindustriallyprovenprocessmodelsintegratedintheUTCASsoftwarepackageforconvertermanagementandcontrol.Finally,thispaperconcludesonhowthesuggestedprocesscanbeappliedinactualplantoperation.
简介:Thepaperapproachestheproblemofthecommandfunctionsofgalvanometer-basedscanners(GS)thatarenecessarytoproducethelinearplusparabolicscanningfunctionoftheGS,whichwehaveprovedpreviouslytoproducethehighestpossibledutycycle(i.e.,timeefficiency)ofthedevice.Wehavecompletedthistheoreticalaspect(whichcontradictedwhathasbeenstatedpreviouslyintheliterature,whereithasbeenconsideredthatthelinearplussinusoidalscanningfunctionwasthebest)withtheexperimentalstudyofthemostusedscanningfunctionsoftheGSs(sawtooth,sinusoidalandtriangular),withapplicationsinbiomedicalimaging,inparticularinopticalcoherencetomography,demonstratingthatthetriangularfunctionisalwaysthebestonetobeapplied,frombothanopticalandamechanicalpointofview.Inthepresentstudytheinputvoltage/commandfunctionwhichshouldbeappliedtotheGStoproducethedesiredtriangularscanningfunction(withcontrollednon-linearityforthefastestpossiblestop-and-turnportions)wasdeterminedanalytically,inrelationshipwiththeactivetorquethatdrivesthedevice.Thiscommandfunctionisanalyzedwithregardtothespecific,respectivelyrequiredparametersoftheGS:naturalfrequencyanddampingfactor,respectivelyscanspeedandamplitude.ThemodelinginanopenloopcontrolstructureoftheGSisfinallydiscussedasatrade-offbetweenusingthehighestpossibledutycycleandminimizingthemaximumpeaksoftheinputvoltage.
简介:<正>Neuralnetworkhastheabilitiesofself-studying,self-adapting,faulttoleranceandgeneralization.Buttherearesomedefaultsinitsbasicalgorithm,suchaslowconvergencespeed,localextremes,anduncertainnumberofimpliedlayerandimpliednotes.Thispaperpresentsasolutionforovercomingtheseshortagesfromtwoaspects.Oneistoadoptprinciplecomponentanalysistoselectstudysamplesandmakesomeofthemcontainsamplecharacteristicsasmanyaspossible,theotheristotrainthenetworkusingLevenberg-Marquardtbackwardpropagationalgorithm.Thisnewmethodwasprovedtobevalidandpracticableinsiteselectionofpracticalgarbagepowergenerationplants.
简介:在在它的失败以后的一个舷侧电源系统(SPS)的电的网络的可配置性对电源供应的恢复中央并且改进SPS的survivability。航行过程创造不同操作条件的一个序列。一些负担的优先级在改变操作条件不同。在分析典型SPS的特征以后,一个模型被开发使用一个等级III总机和一个环境权衡轻重代理人(EPA)算法。当它逻辑地并且身体上象多代理人一样被分散,这个算法被选择面向。EPA算法被用来决定动态负担优先级,然后,最好遇见最大的电源供应负担选择了工具。模拟结果证明更高的优先级负担是第一被恢复。系统满足了所有必要限制,表明建议方法的有效性和有效性。
简介:Bymeansofmolecularscalemanagement,thetechnologyofseparatingnormalparaffinsfromnaphthathroughadsorptionusing5Amolecularsieveswasstudiedwiththepurposeofoptimizingtheutilizationofnaphtha.Therawmaterialsusedinsteamcrackingandcatalyticreformingprocessescouldbeallocatedproperly.Duringtheadsorptionprocess,theseparationefficiencyofthenormalparaffinswasabove99.9%withthepurityofnormalparaffinsinthedesorptionoilexceeding98.2%.Withtheuseofthedesorptionoilasthefeedstockofsteamcracking,theethyleneyieldincreasedfrom29.7%-35.0%to41.4%-49.2%comparedtothatofthenaphthaintheexistingplantundersimilaroperationconditions.Thepotentialaromaticcontentoftheraffinateoilrosefrom30.6%to43.5%comparedtothatinnaphtha.Theresearchoctanenumberoftheraffinateoilreachedmorethan85withanincreaseof20unitscomparedtothatofnaphtha,sotheraffinateoilismoresuitableforuseasablendingcomponentforhigh-octanecleangasoline.
简介:有步骤形状的三不同的墙节在建立由在三种情况中的步骤的高度作为相等被拿的墙modification.The在低频率声音地上调查效果的有限元素分析模型被使用、随机、优化。优化的值被在健全的地里与最小的变化的一个客观函数使用优化进程获得。有原来、修改的墙的房间的频率回答从60Hz在一个范围被计算到120Hz。结果证明有优化的墙节的房间有最扁平的频率反应。当这个房间的比率被改变,一样的事情是真的。变化上的最大的改进到达了4.5dB。另外,有半圆和三角的墙节被学习。围节的房间优化了半径,高度也比修理了半径和heights.Therefore的那些给了更好的表演,使用优化的墙节改善是可能的低频率声音地。
简介:Afterthesingle-strainabilitiesoforganic-pollutant-degradingbacteriainbioremediationofsedimentenvironmentofshrimpculturearedetermined,themultistraindegradingeffectofthecompositionsofdifferentstrainsismeasured.Theresultsindicatethatthemulti-strainsgroupshavehigherdegradingabilitythanthesingle-straingroups.Three-straingroupsarebetterthantwo-straingroups,andfourstraingroupsarebetterthanthree-straingroupsandfive-straingroups,thegroupscomposedofstrainsLt7222,Lt7511,Fc6308andGy7018hasthebestdegradingeffect,theCODMnremovalrateis73.2%in66h,andgetsto82.7%in114h,30%higherthanthatofthebestsingle-straingroup;GroupsofLt7222,Lt7511,Lt7451andGy7018arethesecond,whoseCODMnremovalrateis82.1%in114h,Itissuggestedthatmulti-speciesbacteriabeusedasfunctionalbacteriainbiorernediationofmaricultureenvironment.
简介:MarmaraSea,locatedbetweenBlackSeaandAegeanSea,isanimportantseaforoceanengineeringactivities.Inthisstudy,wavepowerpotentialofMarmaraSeawasinvestigatedusingthethirdgenerationspectralwind-wavemodelMIKE21SWwithunstructuredmesh.WinddatawasobtainedfromECMWFERA-Interimre-analyseswinddatasetat10mwithaspatialresolutionof0.1?fortheperiodof1994to2014.ThenumericalmodelwascalibratedwithmeasuredwavedatafromabuoystationlocatedinMarmaraSea.Meshoptimizationwasalsoperformedtoobtainthemostsuitablemeshstructureforthestudyarea.ThisstudyisthefirstthatdealtwiththedeterminationofwaveenergypotentialofMarmaraSea.Thenumericalmodelresultsarepresentedintermsofmonthly,seasonalandannualaverageofwavepowerflux(kWm-1).Themaximumwavepowerfluxis1.13kWm-1andoccursinNovember.Theoverallannualmeanwavepowerfluxduring1994–2014isfoundtobe0.27kWm-1intheoffshoreregions.
简介:Thenon-edibleoilsarebelievedtobeoneofthemajorfeedstockfortheproductionofbiodieselinfuture.Inthepresentstudy,weinvestigatedtheproductionofJatrophaoilmethylesters(JOMEs)viaalkali-catalyzedtransesterificationroute.ThebiophysicalcharacteristicsofJatrophaoilwerefoundwithintheoptimalrangeinaccordancewithASTMstandardsasasubstitutedieselfuel.Thechemicalcompositionandproductionyieldofas-synthesizedbiodieselwereconfirmedbyvariousanalyticaltechniquessuchasFT-IR,1HNMR,13CNMRandgaschromatographycoupledwithmassspectrometry.Ahighpercentageconversion,~96.09%,offattyacidsintoesterswasachievedunderoptimizedtransesterificationconditionswith6:1oiltomethanolratioand0.9wt%NaOHfor50minat~60°C.Moreover,twelvefattyacidsmethylesters(FAME)werequantifiedintheGC/MSanalysisanditwasinterestingtonotethatthemassfragmentationpatternofsaturated,monounsaturatedanddiunsaturatedFAMEwascomparablewiththeliteraturereportedvalues.
简介:Reflectorsareanessentialcomponentforon-chipintegratedphotonics.Here,weproposeanewmethodfordesigningreflectorsontheprevalentthin-film-on-insulatorplatformbyusinggenetic-algorithmoptimization.Insimulation,thedesignedreflectorwithafootprintofonly2.16μm×2.16μmcanachieve~97%reflectivityand1dBbandwidthaswideas220nm.Thestructureiscomposedofrandomlydistributedpixelsandishighlyrobustagainsttheinevitablecornerroundingeffectindevicefabrication.Inexperiment,wefabricatedon-chipFabry–Perot(FP)cavitiesconstructedfromoptimizedreflectors.ThoseFPcavitieshaveintrinsicqualityfactorsof>2000withthehighestvaluebeyond4000inaspectralwidthof200nm.ThereflectivityfittedfromtheFPcavityresonancesis>85%intheentirewavelengthrangeof1440–1640nmandisbeyond95%atsomewavelengths.ThefabricationprocessesareCMOScompatibleandrequireonlyonestepoflithographyandetch.Thedevicescanbeusedasastandardmoduleinintegratedphotoniccircuitryforwideapplicationsinon-chipsemiconductorlaserstructuresandopticalsignalprocessing.