学科分类
/ 25
500 个结果
  • 简介:摘要:为解决机场出租车和乘客的乘车效率问题,构建 排队模型,合理设置“上车点”,通过多次枚举,计算等待排队平均车辆数、上车点平均逗留车辆数等指标。查找乘车效率最高的上车点数量。对传统模型进行改进,建立非强占型的优先权 排队模型,将上车点分为短途乘客点和长途乘客点,可得到两种划分方案,计算追平利润差倍数 ,即短途载客司机若接 次短途乘客,即可以获得“优先权”直接进入长途上车点接乘客。在旅客非高峰情况中,在方案 1下,当出租车司机的接 2次短途乘客时,即可以获得“优先权”,通过绿色车道,直接进入长途上车点接客。在方案 2下当出租车司机的接 3次短途乘客时,即可以获“优先权”,通过绿色车道,直接进入长途上车点接客。

  • 标签: 机场出租车 排队模型 概率转移
  • 简介:自暑末期间新天下公司推出神舟承运M131C的7990元迅驰架构笔记本直到今日.依然成为笔记本市场中争议最大的话题。然而新天下公司又是接二连三地“轰炸”推出了M132、M142、M14l、M140等系列的万元以下国产迅驰笔记本.博得了众多消费者的关注与争论。我们评测室近期又收到了这款神舟承运M142S

  • 标签: 性价比 笔记本电脑 电池 新天下公司
  • 简介:在Drinfeld—Jimbo量子包络代数理论中,Uq(sl(2))起着某种不可替代的作用:它不仅是对一般理论的一个提示,而且也提供了一般情形发展中必需的结果和工具。本文给出了当q不是单位根时,多项式代数的m齐次空间S^m作为Uq(sl(2))的分解式,由此得到一个有趣的组合恒等式。

  • 标签: 量子群 表示 组合恒等式
  • 简介:福瑞达M50S是昌河铃木在加入北汽集团后推出的第二款车型,在M50基础上进行多项升级,在自主品牌紧凑型MPV中率先搭载了合资发动机。

  • 标签: 空间 北汽集团 自主品牌 第二款 发动机 MPV
  • 简介:AsourceextentanalysisoftheLancangearthquake(Ms=7.6)of1988SI-HUAZHENG(郑斯华)JIANYANG(杨健)CenterforAnalysisandprediction,ChinaSeis...

  • 标签:
  • 简介:S.M.A.R.T是英文Self-Monitoring,AnalysisandReportingTechnology的缩写,即自检、分析和报告技术。顾名思义,这是用来对硬盘自身进行监测,并向用户提供分析结果的一项自诊断技术。自ATA-3以后,S.M.A.R.T技术已经成为IDE硬盘必备的规范。现在,无论是IDE产品还是SCSI产品,几乎所有市售硬盘都支持S.M.A.R.T功能,但要使用这个功能,必须具备相应的BIOS和专门的应用程序。

  • 标签: 计算机 S.M.A.R.T 硬盘 自诊断技术 B10S 冗余校验
  • 简介:Theproductionindexesweredeterioratedduetoqualitycoke,UtilizationFactor2.0t/m3·d,PCI100kg/T,AccordingtoAnalysistheMechanismofProductionoflowhotstrengthcokequalityonBlastFurnaceSmooth,ThecokecoldstrengthretainedM10<6.3overalongperiodoftimeinordertoinsurecokegranularityandpermeabilityindexincohesivezone;Aad<12andgranularitytranquilizationisusefulBFproduction.ThePCIprotectcokehotstrengthbyhighratebituminouscoals;highrateH2inBFgasbatecokedemolish.blastfurnaceoperation,onmonitoringandoperationBF,tranquilizationtheBLASTFURNACEtemperature,PTcontrolsparameterareaisabout1500℃;strengthenmanagementofpermeabilityindex,improveTop-pressureforBlastFurnace,StrengtheningtheManagementoftheRawMaterialsandFuel,logicalrateofsinterLeveloffabout70%toimproveMetallurgicalPropertiesofBurdens.ParametersofwindhavebeenadoptedAbout10000-11000kg·m/s;,theoreticalflametemperatureinablastfurnacehavebeenadjustedareaisabout2050-2200℃;thetemperaturedirectionaboutcopperstavemanagementestablishedact;accordingtothismeasures,AccordingtoImprovementCenterGasFlowInstabilityinthefirstplace,thegasflowdistributionturnstothereasonablestate.Strengthenfurnacecasthouseoperationect,UtilizationFactorimprove2.2t/m3·d,PCI130kg/T.ColdandhotstatestrengthindexesofcokeonBFproductionwereinstability.AccordingtooptimizetheOperatingParameteinspecificallyeconomytechnologyindexesconduction,theBFcondictioncankeepingsteadyandsmooth.

  • 标签:
  • 简介:

  • 标签:
  • 简介:文章对S11-M·R系列变压器在降低空载损耗和减小空载电流方面进行了论述和比较。得出了采用S11-M·R系列变压器,在降低功率损失、减小空载电流、使用寿命和投资回收等方面的突出优势,是较为理想的选择。

  • 标签: S11-M·R系列变压器 空载损耗 空载电流 使用寿命 节能技术
  • 简介:ByapplyinghigherpowersoftheBogoliubovtransformationoperatorb^t=u^*a+μ^*a^ttothetwo-photoncoherentstates(orminimumuncertaintysqueezedstates)weconstructanewtypeofquantumstatewhichwecallthegeneralizedexcitedtwo-photoncoherentstates.Analyticexpressionsforthequantumstatisticalpropertiesarederived,andthroughnumericalcomputationthephasespacequasi-probabilitydistributionsarefound.Thesestatescanexhibithighlynonclassicalbehaviourdependingonthedegreeofexcitationmandotherparameters.ForparticularvaluesoftwoparametersAandp,thesegeneralizedstatesreducetootherclassesofcoherentstatesformerlyreported.Ourtheorythuspresentsamuchbroaderapproachtothesetypesofquantumstates.

  • 标签: 受激双光子相干态 非经典统计性质 量子光学 量子态 Bogoliubov转换算子
  • 简介:TheextensivedamagetobuildingscausedbytheNepalM_s8.1earthquakehasattractedmuchattentionbytheinternationalcommunity.AfterthepreliminaryscientificinvestigationsonthedifferentaffectedareasinNepal,theconstructionanddamagecharacteristicsoffivedifferenttypesofbuildingscommonlyexistinginNepalwerediscussedandthereasonsoftheirdisasterperformancewereanalyzed.Typesofbuildingsinvestigatedincludereinforcedconcrete(RC)framestructures,rubblestructures,brick-woodstructures,rawsoilstructures,andbrick-woodstructuresofhistoricbuildings.Inaddition,theweaklinksoftheseismicdesignwerepointedout,whichwasveryimportantforthepost-earthquakereconstructionandrecovery,andgaveapreliminaryexplanationsforthedamageexperienced.

  • 标签: Nepal EARTHQUAKE SEISMIC DAMAGE of BUILDING
  • 简介:Thepost-earthquakerapidaccurateassessmentofmacroinfluenceofseismicgroundmotionisofsignificanceforearthquakeemergencyrelief,post-earthquakereconstructionandscientificresearch.TheseismicintensitydistributionmapreleasedbytheLushanearthquakefieldteamoftheChinaEarthquakeAdministration(CEA)fivedaysafterthestrongearthquake(M7.0)occurredinLushanCountyofSichuanYa’anCityat8:02onApril20,2013providesascientificbasisforemergencyrelief,economiclossassessmentandpost-earthquakereconstruction.Inthispaper,themeansforblindestimationofmacroscopicintensity,fieldestimationofmacrointensity,andreviewofintensity,aswellascorrespondingproblemsarediscussedindetail,andtheintensitydistributioncharacteristicsoftheLushan'4.20'M7.0earthquakeanditsinfluentialfactorsareanalyzed,providingareferenceforfutureseismicintensityassessments.

  • 标签: Lushan EARTHQUAKE INTENSITY ASSESSMENT damage index
  • 简介:

  • 标签:
  • 简介:Bytheadditionalreactionofbinuclearcompounds(Me4N)2M2S4(TDT)2(M=Mo,W;H2TDT=H2CH3C6H3S2)withmononuclearcuprouscomplex,twonewM-Cu-SclustersMo2Cu2S4(TDT)2-(PPh3)2·CH3CH2OH(1)andW2Cu2S4(TDT)2(PPh3)2·0.5CH3CH2OH-0.5H2O(2)havebeenpreparedandcharacterizedbyIR,UV-Vis,31PNMRspectroscopy,cyclicvoltammetryandsinglecrystalX-raystructureanalysis.BothcompoundscrystallizeinspacegroupP21/nwithlatticeparametersa=1.0956(3),b=2.2072(3),c=2.4340(3)nm,β=100.36(2)°,V=5.790(3)nm3andZ=4for1anda=1.0965(9),b=2.2135(3),c=2.4317(4)nm,β=99.63(8)°,V=5.819(8)nm3andZ=4for2.Bothmolecularstructurescontainacubane-likeclustercore[M2Cu2S4](M=Mo,W)andtheirskeletonsarealmostthesameexceptforMatoms.Thesyntheses,structuresandspectrumcharacterizationsofthesetwoclustersarediscussed.Thethird-ordernonlinearoptical(NLO)propertyofthetwoclusterswasstudiedbythetechniqueofforwarddegeneratefour

  • 标签: M-Cu-S(M = MO or W) cluster
  • 简介:  华辰变压器有限公司生产的S11-M-1000-10油浸式电力变压器,具有低损耗、低噪声、高效率的优点,可取得良好的节能效果并减少污染.……

  • 标签: 式电力 油浸式 电力变压器
  • 简介:OnApril25,2015,aM_S8.1earthquakeoccurredinNepal.IntheTibetareaofChina,thisearthquakecausedheavycasualtiesanddamagetohousing,roads,communications,otherlifelineengineering,waterconservancyandotherinfrastructure.Thispaperintroducesthebasicsituationoftheearthquake,andbasedontheinvestigationandassessmentofseismicintensity,thedamageofthedisasterareaisanalyzed,andbuildingtypesanddamagetothelifelinesystemsandvariousindustriesaregiven.Throughtheanalysisofthecharacteristicsoftheearthquakedisaster,thispaperpointsouttheexistingproblemsinseismicfortification,andfinallyputsforwardproposalsforthepreventionandcontrolofearthquakegeologicaldisasters,scientificplanningfortherestorationandreconstruction,strengtheningearthquakepreventionanddisasterreductionpropaganda,improvingtheawarenessofearthquakepreparednessintheagriculturalandpastoralareas,strengtheningtheguidanceandsupervisionofhousingconstructioninruralareastoreducethecasualtiesandlosses,andpromotingtheharmoniousdevelopmentofeconomyinTibet.

  • 标签: 8.1级地震 西藏地区 震害特征 尼泊尔 地震地质灾害 防震减灾宣传