学科分类
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495 个结果
  • 简介:成长观察表明软gamma光线重复ers和异常x-raypulsars是磁铁艺术。他们的磁场可以完成10(14)-10(15)G。我们由在中子星(NS)内考虑P-3(2)超流体中子的磁化探索超级强壮的磁场的起源。由Elgaroy由和状态的方程解决Tolman-Oppenheimer-Volkov方程采用了它等。[Phys。加快。Lett。77(1996)1428]在配对差距的中子的计算,我们明确地计算NS内部结构,为在NS内的P-3(2)超流体中子的可允许的区域,和有序的安排中子旋涡贡献的全部的磁性的时刻。结果证明导致的磁场可以盖住一个宽范围,它与磁场下面为脉冲星纺纱由标准磁性的偶极子放射预言了一致。

  • 标签: 可能机理 超强磁场 软γ射线中继器 X射线脉冲 偶极辐射 脉冲星
  • 简介:Firms’transformationfrompassiveenvrionmentalmanagementtoactiveenvironmentalmanagementisthekeytosolvingenvironmentalproblems.Thispaperempiricallystudiestheimpactofenvironmentalmanagementincen-tivesonenvironmentalmanagementthroughmodelconstruction.BasedonthedataandrealityofChina,wecanbuildaconceptmodelofenvironmentalmanagementdrivingmechanism,andputforwardtheoreticalhypothesisthatcanbetested:takethe13environmentalmanagementbehaviors(EMBs)assubstituteofthecomprehensiveness,introducecountingvariables,anduseNBmodel,PossionModelandOrderedProbitmodeltheregressionanalysis.ThetheoryandmethodsbroughtforwardinthispaperwillprovidereferencesforfirmsinChinatofurtherimplementvoluntaryenvironmentalmanagement,andofferadvisesandcountermeasuresforleaderstoimplementenvironmentalmanage-menteffectively.

  • 标签: 企业管理 企业改革 环境管理 概率模型
  • 简介:Thispaperpresentsamechanicalmodelofjumpingrobotbasedonthebiologicalmechanismanalysisoffrog.Bybiologicalobservationandkinematicanalysisthefrogjumpisdividedintotake-offphase,aerialphaseandlandingphase.Wefindthesimilartrajectoriesofhindlimbjointsduringjump,theimportanteffectoffootduringtake-offandtheroleofforelimbinsupportingthebody.Basedontheobservation,thefrogjumpissimplifiedandamechanicalmodelisputforward.Therobotlegisrepresentedbya4-barspring/linkagemechanismmodel,whichhasthreeDegreesofFreedom(DOF)athipjointandoneDOF(passive)attarsometatarsaljointonthefoot.TheshoulderandelbowjointseachhasoneDOFforthebalancingfunctionofarm.Thegroundreactionforceofthemodelisanalyzedandcomparedwiththatoffrogduringtake-off.Theresultsshowthatthemodelhasthesameadvantagesoflowlikelihoodofprematurelift-offandhighefficiencyasthefrog.Analysisresultsandthemodelcanbeemployedtodevelopandcontrolarobotcapableofmimickingthejumpingbehavioroffrog.

  • 标签: 蛙跳形态 运动分析 机械模式 跳跃机器人
  • 简介:Fromseveralmodelsaboutdamagemechanis,thedamagemecanismofopticalfilmsandthefactorswhichaffectthedamagethresholdaredescribedexperi-mentallyandtheoretically.Somereasonableproposalsaregivenisthispaperonhowtoselectthehigh-thresholdfimls.

  • 标签: 光学薄膜 激光器 损坏机理
  • 简介:TheinfluenceofthesurfacestateofthegraphitefurnaceatomizerontheatomizationofhydrideshasbeenstudiedbymeansofsurfacefilmcoatingandquantumchemistryCN-DO/2calculations.TheresultsofthestudyprovethattheatomizationofAsH3,SbH3andBiH3inthegraphitefurnaceatomizerisnotasimplegasphasepyrolyticprocess,butasurfacecatalysispyrolyticprocess.

  • 标签: FLA HYDRIDE AAS ATOMIZATION MECHANISM
  • 简介:Aprincipalchallengeinsupportingreal-timevideoservicesoverATMistheneedtoprovidesynchronousplay-outinthefaceofstochasticend-to-endnetworkdelays.Inthispaper,anintelligenttrafficsmoothmechanism(ITAM)isproposedtomeetthecontinuityrequirementwhichiscomposedofaback-propagationneuralnetwork(BPNN)trafficpredictoraplay-outbuffer,andafuzzyneuralnetwork(FNN)basedplay-outratedeterminator.TheBPNNtrafficpredictoronlinepredictsthemeanpacketrateofthetrafficinthefutureinterval(FI)andtheFNNisdesignedtoadaptivelydeterminatetheplay-outtimeaccordingtothenumberofpacketsinthebufferandthetrafficcharacterpredicted.Simulationresultsshothatcomparedtothewindowmechanism,ITSMachieveshighcontinuitywithaccepteddelay.Furthermore,ITSMcanbeadaptivelymodifiedtomeettheQoSofdifferentkindsofservicesbyFNNparametertraining.

  • 标签: 异步传输模式 服务质量 模糊神经网络 多媒体通信 反传网络
  • 简介:Topologicalnamingmechanisminfeature_basedmodelingJunjunWu,TongyangWang,XinfangZhangandJizhouComputerAidedDesignCenter,HuaZhon...

  • 标签: TOPOLOGICAL NAMING feature_based MODELLING ENTITY identification
  • 简介:Thisletterreportsastudyofahybridburstassemblyandahybridburstlossrecoveryscheme(delay-basedburstassemblyandhybridlossrecovery(DBAHLR))whichselectivelyemploysproactiveorreactivelossrecoverytechniquesdependingontheclassificationoftrafficintoshorttermandlongterm,respectively.TrafficpredictionandsegregationofopticalburstswitchingnetworkflowsintothelongtermandshorttermareconductedbasedonpredictedlinkholdingtimesusingthehiddenMarkovmodel(HMM).ThehybridburstassemblyimplementedinDBAHLRusesaconsecutiveaverage-basedburstassemblytohandlejitterreductionnecessaryinreal-timeapplications,withvariationsinburstsizesduetothenon-monotonicnatureoftheaveragedelayhandledbyadditionalburstlengththresholding.ThisdynamichybridapproachbasedonHMMpredictionprovidesoverallalowerblockingprobabilityanddelayandmorethroughputwhencomparedwithforwardsegmentredundancymechanismorpurelyHMMprediction-basedadaptiveburstsizingandwavelengthallocation(HMM-TP).

  • 标签: 混合方法 恢复机制 网络丢包 OBS HMM模型 隐马尔可夫模型
  • 简介:IntermittentPneumaticCompression(IPC)hasbeenusedsuccessfullyforthepreventionofearlypostoperativedeepveinthrombosis(DVT).RecentlyIPChasbeendescribedforthetreatmentoflymphedema,chronicedema,recoveryfromlowerextremityulcersandtheenhancementofwoundhealing.ForgoodapplicationsofIPCinclinic,itisnecessarytostudyitseffectivemechanismfurther.Wemeasuredsome

  • 标签: hasbeen Compression EDEMA POSTOPERATIVE CLINIC HEALING
  • 简介:AlosslessimagesecretsharingusingasimpleBooleanoperationisproposed.Theconceptofvisualcryptographyinthesecretsharingschemeisusedtoredesignalosslesssecretsharingscheme.Toensurethatthereconstructedimageisthetruesecretimage,anauthenticationmechanismisimportedintotheproposedschemetoverifywhethertheshadowsareauthenticbeforereconstructingthesecretimage.TheproposedschemedeliversmuchmoreeffectiveperformancethanChenandWu'sscheme.

  • 标签: 秘密共享方案 验证机制 布尔操作 布尔运算 视觉密码 图像
  • 简介:AbstractMany factors can cause inner ear injury, such as noise exposure, chemicals, viral infection, and radiation. The main pathological manifestations of inner ear injury are local hypoxia-ischemia, micro-trauma, and an increased level of reactive oxygen species and inflammatory mediators. The contribution of the inflammatory response to the mediation of cochlear and vestibular pathologies has received increasing attention in recent years. Aseptic inflammation can devastate audition and balance, which can lead to many typical clinical inner ear diseases. In this review, we will discuss the most pertinent and recent research on inflammatory mechanisms in inner ear injury. We will also discuss the pathophysiology of some common and significant ear diseases, such as sudden sensorineural hearing loss, age-related hearing loss, noise-induced hearing loss, and Meniere’s disease.

  • 标签: age-related hearing loss immune response inflammatory response macrophages sudden sensorineural hearing loss
  • 简介:BilateralTransactionbetweenlargeusersandpowergenerationenterprisesisnotasimplereform.Itisanimportantstageinpowermarketrestructuringandwillgranttheelectricityuserstherightofserviceselection.Theimplementationofbilateraltransactionswillhelptoestablishthemultiplebuyers’marketstructure,reasonablepricemechanismandmarkettradingmechanism.Itisalsoanimportantapproachtoenhancethecompetitioninthemarketandimprovetheefficiencyofenergyresourceallocation.

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  • 简介:尽管全面结构或结构的成员没完全被破坏,因为高速度水泥碎片,源于接触爆炸的具体平板或墙的分裂在结构内组成风险到人员和设备。正确地预言任何潜力引起的损坏联系爆炸能导致更好的筑堡设计承受强风装载。学习涉及具体平板和墙的分裂的机制因此意义大。这个话题上的存在研究经常采用简化材料模型和1D波浪分析,它不能在分裂过程复制现实主义的反应。数字模拟因此用LS-DYNA在免费的空中在不同接触强风装载下面被执行。复杂具体、增强的酒吧材料模特儿被收养,考虑紧张和压缩上的紧张率效果。侵蚀技术被用来在张力的应力下面为材料的破裂和失败建模。变丑的完整的过程和平板和平凡具体平板这样是的增强的水泥(RC)的动态损坏写实地观察了。随炸药的数量的增加,损坏坑增加和平板的尺寸经历四个不同损坏模式,这被注意,也就是爆炸的坑,spalling,穿孔,并且打。在增强锁的RC平板表演的平凡具体平板和那些的模拟结果之间的比较能提高正直和平板的砍的抵抗到某个程度,并且同时稀释喷射速度和减少水泥的尺寸碎裂。因此,优化加强安排能改进平板和墙的反分裂能力到某个程度。

  • 标签: 加固混泥土板 数字模拟 连续爆炸 建筑材料
  • 简介:1BACKGROUNDOFTHETASKFORCEOFCIRCULARECONOMYInrespondingtothecallfromtheChinesegovernmenttotakethecirculareconomyapproachfornewindustrializationandsustainabledevelopment,theTaskForceonCircularEconomy&CleanerProduction(CETF)ofthe3rdphase

  • 标签: CIRCULAR ECONOMY CIRCULAR ECONOMY CLEANER production