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29 个结果
  • 简介:一次匆匆的邂逅,一次短暂的交谈,居然改变了一个失志青年的一生!这就是语言的力量,这就是语言的智慧!

  • 标签: 中学 英语 课外阅读 阅读材料
  • 简介:针对RockingBlock中的线碰撞问题,首先采用离散化思想将线碰撞问题离散为多点碰撞系统,而后基于LZB方法对所建多点碰撞系统进行动力学建模.仿真结果表明随着离散点数的增加,基于LZB方法的多点碰撞模型能够很好地刻画RockingBlock中的相关线碰撞问题,且精度与离散程度紧密相关.

  • 标签: 线碰撞 多点碰撞 非光滑动力学 ROCKING Block
  • 简介:在AMG50周年之际,这款两座超跑带来了最新的、成熟的F1混动车技术.这款高性能混动车据说最大功率可达1000马力,极速超过350公里/小时,它结合了赛道性能和适合日常驾驶的F1混动技术,并具有绝佳的经济性.这辆车的动力系统由一个加了涡轮增压的燃油发动机和四个电动马达组成,其中一个和涡轮增压器整合在一起,另一个则是通过曲轴箱与燃油发动机直接相连,其余两个则是用来驱动前轮.里面的1.6升V6发动机来自F1赛车,转速可达11000转,在公路车中实属少见,而电动机的转速也高达50000转,一般的转速仅为20000转.这两个马达可独立为前轮提供加速和减速功能,换言之,ProjectONE的前轮可获得不同比率的扭力输送,令车身有更佳的动力表现.在日常情况下,马达可把80%的刹车车动能回收,然后储存在电池内.

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  • 简介:one-bead-one-compound(OBOC)组合的肽图书馆是一个强大的工具识别ligand和受体相互作用。这里,我们使用了OBOC图书馆技术识别对主要贝壳变应原tropomyosin的免疫球蛋白E(IgE)epitopes特定的mimotopes。有8-12氨基酸残余的OBOC肽图书馆为tropomyosin的IgEmimotopes与贝壳过敏症从病人与浆液样品被屏蔽。25mimotopes从屏蔽被识别,他们到tropomyosin特定的IgE的有约束力的反应被肽ELISA证实。这些mimotopes能基于顺序相同被划分成七簇,并且由聚类的mimotopes的EpiSearch印射的epitope被执行描绘并且证实mimotopes的有效性。五从六预言的epitopes被发现与tropomyosin的以前识别的epitopes重叠。为了推进,证实mimotopes的模仿潜力,BALB/c老鼠被使免疫,mimotopes结合了到锁眼恋栈者hemocyanin和assayed让他们的能力导致tropomyosin特定的抗体。那收到的mimotope免疫被发现有tropomyosin特定的免疫球蛋白G的提高的水平的BALB/c老鼠,然而并非收到了无关的mimotope的老鼠。这研究用整个sera开创OBOC图书馆的成功的申请屏蔽并且识别多重虾变应原mimotopes并且验证他们在vitro使用的模仿潜力,在vivo,并且在silico方法。

  • 标签: 原肌球蛋白 抗原表位 过敏原 肽库 筛选 鉴定
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  • 简介:Inthispaper,weanalyzethefuzzyreliabilityofparalleling-seriessystem,focusingonthesituationoftheearlyfailuremode.TheearlyfailuremodeoffuzzyreliabilitymainlyobeystheWeibulldistribution.Basedonthis,weobtainthedistributionfunction,densityfunction,failurefunction,reliabilityfunctionandtheformulaofthemeantimetofailure.Fortheparalleling-seriessystemcomposedofmultiplecomponents,C1j,C2j,Cnj…,Cnj(j=1,2,…,K),especiallywhenη=1,mij=m,i=1,…n,j=1,2,…,k,wealsoobtainthecorrespondingformulas.Finally,weciteanexampletoverifytheformulaanddeepentheunderstanding.

  • 标签: Paralleling-series System EARLY FAILURE MODE FUZZY
  • 简介:Threeyearsafterthe'BeltandRoad'(OBOR)Initiativewasproposed,morethan100countriesandinternationalorganizationshaveparticipated.ChinahassignedcooperationagreementstojointlypromoteOBORwithnearly40countries

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  • 简介:密文政策基于属性的可查找的加密(CP-ABSE)能为数据分享和检索完成有细密纹理的存取控制,并且安全deduplication能由消除副本拷贝节省存储空间。然而,有很少策划支持可查找的加密和安全deduplication。在这份报纸,支持安全块级的deduplication的一个大宇宙CP-ABSE计划在混合的云机制下面被建议。在建议计划,在密文被插入到花蕾过滤器树(BFT)以后,私人云能由匹配标签高效地执行有细密纹理的deduplication,并且公共的云能用同构的可查找的方法并且关键词匹配高效地寻找。最后,建议计划能在选择分发攻击下面完成隐私块级(PRV-CDA-B)固定deduplication并且隐藏火柴(MC)可查找的安全。与存在计划相比,建议计划在同时支持有细密纹理的存取控制,块级的deduplication和有效搜索有优点。

  • 标签: 块级的 deduplication 可查找的加密 大宇宙 BFT
  • 简介:Duringsurgery,aheartbeatdoesn’tjusttellwhetherapersonisdeadoralive-itcanwarnofbigproblemsthatcomeupquitesuddenly.Keepingwatchforsubtleirregularitiesintheheart’selectricactivitycanhelpsaveapatient’slife.Buttoday’stechnologycan’tgiveasmuchdetailasdoctorswant

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  • 简介:在“天天有网球”的赛场上,经常可以看到不同年龄段的选手隔网厮杀的场景。NoOne战队是女团比赛中平均年龄最小的一支队伍,爽朗的笑声时常响彻整片网球场,不同于单调的电影逛街,她们把球场当作人生的游乐场,将赛场上的每一场比赛,都作为好友之间最难忘的聚会。

  • 标签: One 平均年龄 年龄段 游乐场 赛场 球场
  • 简介:Theanalog-to-informationconvertor(AIC)isasuccessfulpracticeofcompressivesensing(CS)theoryintheanalogsignalacquisition.Thispaperpresentsamulti-narrowbandsignalssamplingandreconstructionmodelbasedonAICandblocksparsity.Toovercomethepracticalproblems,theblocksparsityisdividedintouniformblockandnon-uniformblocksituations,andtheblockrestrictedisometrypropertyandsub-samplinglimitindifferentsituationsareanalyzedrespectivelyindetail.TheoreticalanalysisprovesthatusingtheblocksparsityinAICcanreducetherestrictedisometricconstant,increasethereconstructionprobabilityandreducethesub-samplingrate.Simulationresultsshowthattheproposedmodelcancompletesub-samplingandreconstructionformulti-narrowbandsignals.ThispaperextendstheapplicationrangeofAICfromthefiniteinformationratesignaltothemulti-narrowbandsignalsbyusingthepotentialrelevanceofsupportsets.Theproposedreceivingmodelhaslowcomplexityandiseasytoimplement,whichcanpromotetheapplicationofCStheoryintheradarreceivertoreducetheburdenofanalog-todigitalconvertor(ADC)andsolvebandwidthlimitationsofADC.

  • 标签: COMPRESSIVE sensing (CS) block SPARSITY analog-toinformation
  • 简介:Inthisarticle,weareconcernedwiththeglobalweaksolutionstothe1Dcompressibleviscoushydrodynamicequationswithdispersioncorrectionδ~2ρ((φ(ρ))xxφ′(ρ))xwithφ(ρ)=ρα.ThemodelconsistsofviscousstabilizationsbecauseofquantumFokker-PlanckoperatorintheWignerequationandissupplementedwithperiodicboundaryandinitialconditions.Thediffusiontermεuxxinthemomentumequationmaybeinterpretedasaclassicalconservativefrictiontermbecauseofparticleinteractions.Weextendtheexistenceresultin[1](α=1/2)to0<α≤1.Inaddition,weperformthelimitε→0withrespectto0<α≤1/2.

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  • 简介:ObjectiveTheEmeishanlargeigneousprovince(ELIP)inSWChinaistheonlyonelargeigneousprovinceinChinarecognizedbyinternationalgeologists.PreviousstudiesofELIPoverpasttwodecadesindicatethattheELIPage,duration,scaleandgenerationmechanismarestillcontroversial.Amongthosescientifictopics,some

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  • 简介:ThemaindisadvantageofmicroporousSSZ-13catalystusedinthemethanoltoolefins(MTO)processisitsrapiddeactivationduetoitsrelativelylowcokeresistance.Meanwhile,thehierarchicalzeolitesusuallyexhibitimprovedcatalyticstabilitythankstotheirbettermasstransferability.Herein,thehierarchicallynanoporousSSZ-13zeoliteswereone-potsynthesizedbyusingN,N,N-trimethyl-1-adamantanammoniumhydroxideasamicroporousstructuredirectingagentandC18H37N+(CH3)2C6H12N+(CH3)2C6H13(Br-)2(hereinafterabbreviatedasC18-6-6Br2)asamesoporogen.ThehierarchicallynanoporousSSZ-13catalystwascharacterizedbyXRD,N2physisorption,SEM,TEM,TG-DTG,27Aland29SiNMRspectroscopyandNH3-TPDtechniques.TheresultsshowedthatthehierarchicalSSZ-13zeolitesynthesizedinthepresenceoftheC18-6-6Br2surfactantexhibitsaggregatesofprimarynanocrystalsandcontainsthewell-developedmesoporesandexcellentacidity.Comparedtoitsconventionalcounterpart,thehierarchicalSSZ-13zeolitehaslongercatalyticlifetimeandhigherselectivityforethyleneandpropyleneintheMTOreaction,whichcanbeattributedtothesynergisticeffectoftheirgoodacidityandimproveddiffusionpropertiesresultedfromthehierarchicalporestructure.

  • 标签: HIERARCHICAL zeolites SSZ-13 TEMPLATE synthesis MESOPORE
  • 简介:Cross-bordertransferofthecompanyseatformorethandecadewasandstillishotandunresolvedtopicinEUCompanyLaw.FreedomofestablishmentisindisputablecornerstoneofEUcompanylawandInternalMarketenshrinedinArticles49and54oftheTreatyontheFunctioningoftheEuropeanUnion(TFEU)butstillthecompany'scrossbordermobilityisunsolved.ThecompanytransferoftheseatiscloselyconnectedwithdifferentMemberStateslegaltraditioninrelationwiththetwodifferent"seattheories"thatapply.BythepracticeoftheEuropeanCourtofJusticebothseattheories"therealseattheory"and"theincorporationtheory"areproclaimedasinlinewiththeEUlaw.Nevertheless,theprocessofcrossbordertransferoftheseatoccursascompellingproblemforthecross-bordercompanymobility.InmostMemberStatesatthemomentthecrossbordertransferofthecompanyseatrequiresthewinding-upofthecompanyandestablishingthenewoneintheotherMemberState.Thisprocedureleadstothelossoflegalandbusinesscontinuityandnationalapproachestothisissuediffer.

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  • 简介:这份报纸在控制结束与匹配的一般泛音骚乱考虑参数评价和一个不稳定的一个维的波浪方程的稳定。为无限维的系统的backstepping方法在适应管理者的设计被采用。这被显示出结果靠近环的系统是asymptotically稳定的。同时,当时间去无穷,估计的参数被显示对未知参数会聚。

  • 标签: Backstepping 方法 分布式的参数系统 骚乱拒绝 稳定性