简介:长期以来,中国对民办高等教育的定位是坚持公益属性,不能以营利为目的。但在实际发展中,部分民办高校走的却是投资办学道路,存在营利行为。分类管理后,由于不能取得办学回报,举办者向非营利性民办高校注资的积极性可能降低。《国务院关于鼓励社会力量兴办教育促进民办教育健康发展的若干意见》(简称“国务院三十条”)发布后,多个省份发布了“国务院三十条”省级配套政策,明确了民办高校分类管理的具体办法,为民办高校发展创造了良好的政策环境。在今后的政策执行与调整中,政府应加大对非营利性民办高校的财政支持力度,完善税收和土地优惠政策,实现分类管理的平稳过渡。
简介:有隧道的长隧道挖掘无聊的机器(TBM)是一个复杂、随机的过程。在不同隧道节根据特定的地质的条件被调整被无常和需要容易影响,它使安排的构造和管理困难。基于岩石团分类,这份报纸估计穿入率。用率,TBM无聊的系统的一个周期的网络模拟(气旋)模型被建立,并且在不同地质的条件下面的进展率是坚定的。然后,工程安排上的不同切割器头戳的影响,根据以前的经验在合理范围被选择,被分析。而且,弄脏系统的模拟模型被造相当决定湿粪火车和栏杆交叉的数字,关于湿粪装载并且材料搬运的效率。基于在TBM无聊的系统和弄脏的系统之间的相互作用和相互关系,为全部通道过程的联合气旋模型被建立。然后合理的构造时间表,工作资源的利用率,和工程结束的概率通过模型编程被获得。最后,工程应用显示出介绍方法的可行性。
简介:Inthispaper,anequationsystemofelectrohydrodynamics(EHD)basedonthefluidmotionequationsisdiscussed.Emphasisisputontheeffectsofelectricalforceandsurfacetensionuponthefluidmotion.TheMarkerandCellmethodisusedtosetupacomputationalsimulationprogramofelectricallydrivenmotionoffluid.Withthehelpoftheprogram,acylindricalfluidundertheinfluencesofelectricalfieldandsurfacetensionhasbeencalculated.Theresultisingoodagreementwiththeexperimentalobservation.
简介:与设想水交货系统(WDS)的即时模拟计算的目的,一结构绘画面向(SDO)模拟技术被介绍,并且适用于Zhangjiuhe转向工程,它是为从Zhangjiuhe河拉水到Kunming构造的一个长途的水交货系统城市。作为模仿平台拿SIMULINK软件,这种技术为系统建立了一个视觉动态模拟模型。系统的模拟过程被简化,并且当模特儿的效率也根据模拟程序的模块化和利用被提高。而且,一个自我优化模型被介绍。基于数字模拟模型,上线控制优化连接被增加,并且输入数据能不断地根据模仿输出的反馈信息被优化。系统因此自动地被优化。在MATLAB之上造了软件,Zhangjiuhe转向工程的模拟优化被完成,它为WDS的最佳的操作的研究提供一个新方法。
简介:Underforcedventilation,thedustdiffusionofundergroundpowerhouseconstructionisinvestigatedusinga3DhighReynoldsnumberk-εmodel.Theinterfacialmomentumtransfersandthewallroughnessinthewallfunctionareconsidered.VentilationinthethirdlayerofundergroundpowerhouseofXiangjiabahydropowerstationisusedasacase.Thegeometricstructurehasadecisiveeffectontheairflowdistribution.Itisconcludedthatthedustconcentrationdecreasesgraduallywiththeincreaseoftheventilationtime.However,iso-concentrationcurveshavethesametendencyafter1800s.Thedustconcentrationmeetstheventilationanddust-preventionhealthstandardafter2300s.ThepredictionbythepresentmodelisconfirmedbytheexperimentalmeasurementbyNakayama.
简介:蛋白质符合构造上的水的影响被在不同的水系统模仿模型蛋白质溶解酵素的分子的动力学调查。有有六戒指的水的水模型和溶解酵素水簇系统建模的TIP3P的溶解酵素水系统被评估。另外,在溶解酵素附近的溶剂的光线的分发功能是计算的。在溶解酵素附近的水分子的分发类似于水簇的,这被发现。二面的角度的分析和溶解酵素的二硫化物契约证明溶解酵素的符合构造严重地在溶解酵素水系统与那相比在溶解酵素水簇系统被损坏。这差别能被归因于在溶解酵素和水簇之间的分子间的氢契约的更大的数字的形成。是与分析一致水簇能在溶解酵素的热变性作用的过程改变变性作用的度。
简介:ThenormalhypervelocityimpactofanAl-thinplatebyanAl-spherewasnumericallysimulatedbyusingtheadaptivesmoothedparticlehydrodynamics(ASPH)method.Inthismethod,theisotropicsmoothingalgorithmofstandardSPHisreplacedwithanisotropicsmoothinginvolvingellipsoidalkernelswhoseaxesevolveautomaticallytofollowthemeanparticlespacingasitvariesintime,space,anddirectionaroundeachparticle.UsingtheASPH,theanisotropicvolumechangesunderstrongshockconditionarecapturedmoreaccuratelyandclearly.ThesophisticatedfeaturesofmeshlessandLagrangiannatureinherentintheSPHmethodarekeptfortreatinglargedeformations,largeinhomogeneitiesandtracingfreesurfacesintheextremelytransientimpactprocess.Atwo-dimensionalASPHprogramiscodedwithC++.Thedevelopedhydrocodeisexaminedforexampleproblemsofhypervelocityimpactsofsolidmaterials.Theresultsobtainedfromthenumericalsimulationarecomparedwithavailableexperimentalones.Goodagreementisobserved.
简介:Previousstudiesathomeandabroadhavemainlyfocusedonsingledam-break,andlittleattentionhasbeenpaidsofartothedam-breakofcascadereservoirs.Multi-sourceflooding,whichcanleadtothree-dimensionalturbulentphenomenaandsuperpositioneffects,isthemaindifferencebetweenthedam-breakofcascadeandsinglereservoirs.Detaileddescriptionsofthecouplednumericalsimulationofmulti-sourcefloodinghavelittlebeenreported,andtheinitialwetriverbedisrarelyconsideredincurrentmodels.Therefore,inthispaper,amethodbasedonthethree-dimensionalk_eturbulencemodelcoupledwiththevolume-of-fluidmethodisproposedtosimulatethedam-breakfloodingofcascadereservoirs.Theupstreamriver,reservoir,anddownstreamriverareconnectedbytheinternalboundarymethod,andtheinitialconditions,includingriverflowandreservoirwater,aredeterminedaccordingtotheresultsofthenumericalsimulation.Couplednumericalsimulationofdifferentdam-breakfloodingisthenachieved.Thepresentworksolvesthechallengespresentedbytheenhancementandsuperpositionofnaturalriverflow,upstreamflooding,anddownstreamflooding.Thispaperprovidesatheoreticalbasisforfuturestudiesonthedam-breakfloodroutingofcascadereservoirs.
简介:LikemanyriverbasinsinChina,waterresourcesintheFudongPaiRiverarealmostfullyallocated.Thispaperseekstoassessandevaluatewaterresourceproblemsusingwaterevaluationandplanning(WEAP)modelviaitsapplicationtoHengshuiBasinofFudongPaiRiver.Thismodelallowsthesimulationandanalysisofvariouswaterallocationscenariosand,aboveall,scenariosofusers'behavior.Waterdemandmanagementisoneoftheoptionsdiscussedindetail.Simulationsareproposedfordiverseclimaticsituationsfromdryyearstonormalyearsandresultsarediscussed.Withinthelimitsofdataavailability,itappearsthatmostwaterusersarenotabletomeetalltheirrequirementsfromtheriver,andthateventheecologicalreservewillnotbefullymetduringcertainyears.Buttheadoptionofwaterdemandmanagementproceduresoffersopportunitiesforremedyingthissituationduringnormalhydrologicalyears.However,itappearsthatdemandmanagementalonewillnotsufficeduringdryyears.Nevertheless,theeaseofuseofthemodelanditsuser-friendlyinterfacesmakeitparticularlyusefulfordiscussionsanddialogueonwaterresourcesmanagementamongstakeholders.
简介:由使用ABAQUS/Explicit,动态过程一近海风汽轮机(任何东西)乘在前面方向的5000DWT的一艘轮船受灾被模仿。任何东西位于一种综合安装技术构造的一个大规模对桶基础。根据模拟结果,在轮船碰撞下面,塑料地区的某个范围出现在桶基础,和具体塑料地区的弧转变结构的一个本地区域以内严重被损坏。因为任何东西塔的压力水平是相对低的,OWT塔是影响的更少。因为短舱和片的团直到400t,大惯性的力量在OWT塔的顶被产生。塔的排水量在在在惯性的力量的行动下面的1s的结束的轮船碰撞的相反的方向。仅仅在轮船鞠躬有次要的损坏。大多数动能被转变成塑料驱散并且由桶基础的弧转变结构吸收了。
简介:Thedesignmethodsofanodeandcathodeareproposedforprecisionprofilegrinding.Basedontheelectrolyticmachiningtheory,electrolyticequilibriumconditionandFaraday′slawofelectrolysisareappliedtoestablishingthemathematicalmodelofprofilediamonddressingprocess-es.Afiniteelementmethod(FEM)programisdevelopedtosolvetheinverseboundaryproblemofLaplace′sequation.Desiredanodecontourorcathodeshapeisdeterminedbycomputingthedistributionofelectricpotentiallayerbylayer.Electrolyticmachiningexperimentiscarriedouttoverifythesimulatedanodeshape.Theresearchresultshowsthatshapedeviationbetweendesignedcathodeandprofilewheelincreaseswiththevalueofanglebetweenfeedrateandthenormaltoanodesurface.Theshapeofsimulatedanodeisconsistentwiththecontourofmetal-bondeddiamondprofilewheelforagivencathode.Basedontheanodecontour,cathodeshapecanalsobedesignedaccurately.
简介:与电极尖端的squeeze,铝(艾尔)上的氧化物电影合金表面被打破并且数微差距随机被形成。微差距的行为在焊接的开始作为进行看到,因此接触抵抗在艾尔合金的点焊极其高、不稳定。在这份报纸,一个新接触抵抗模特儿被收养模仿形成过程的金块。这个模型描述进行点的随机的分发特征。模拟结果显示那,在焊接电流的开始的5ms以内(交流,50Hz),在细工品接口的温度分发严重是不规则的。另外,金块不从焊接中心起核心作用并且然而,连续地成长它几乎即刻地从几个点随机起核心作用然后快速合并进一个实体。试验性的结果同意了数字模拟。
简介:Themethodologyofvisualsimulationforatunnelengineeringconstructionscheduleispresented.Visualizationofsimulationmodel,calculationandresultofconstructionschedulesimulationisrealized,andtheconstructionsimulationandtheresourceoptimizationoftunnelengineeringaremade.Ariskanalysisandadecision-makingmethodoftunnelengineeringconstructionschedulebasedonvisualsimulationarepresented.Furthermore,usingScurvetheoryandschedulemanagementmethod,thereal-timemanagementandcontrolmethodoftunnelengineeringconstructionbasedonvisualsimulationispresented.Theapplicationtothetunnelengineeringconstructionscheduleanalysisandmanagementshowsthefeasibilityandeffectivenessofthemethodpresentedinthispaper.
简介:Thestochasticmodelsoftheusualjointsarefirstestablishedthroughintro-ducingtheconceptsof“clearancecharacteristicelement”and“clearancespace”.Afterde-rivingtheprobabilitydensityfunctionofthejointclearanceandmakingtheprobabilisticanalysisoftheresultedkinematicerrors,thesamplingformulasoftheindependentvaria-blesofthejointclearancesarefurtherdeduced.ThroughMonteCarlosimulation,thesta-tisticalcharacteristicsandfrequencyhistogramsofthekinematicerrorsarethenanalysedoncomputer.