学科分类
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90 个结果
  • 简介:Theproblemofdecisionmakinginanimpreciseenvironmenthasfoundparamountimportanceinrecentyears.Inthispaper,wedefinevaguesoftrelationandsimilaritymeasureofvaguesoftsets.Usingthesedefinitions,somenovelmethodsofobjectrecognitionfromanimprecisemultiobserverdatahasbeenpresented.Moreover,weintroducethenotionofgeneralizedvaguesoftsetsandstudysomeofitsproperties.Thesimilaritymeasureofgeneralizedvaguesoftsetsisalsopresentedandanapplicationofthismeasureindecisionmakingproblemshasbeenshown.

  • 标签: 模糊 广义 应用 相似性度量 决策问题 对象识别
  • 简介:说比尔盖茨是天才,没有多少人会反对,他拥有多项世界第一他是第一个靠观念、智慧、思维致富,荣登世界首富的人,也是有史以来最年轻的世界首富;他是第一个白手起家、在短短20多年内创造个人财产达到无人能及的商业奇才;他首开新经济致富的先河,成为人类历史上第一个靠软件拥有亿万资产的先知先觉者;他是第一个利用高科技和高智商创造巨额财富的典范……而且他还在继续创造着无数个世界第一。比尔盖茨不但是成功者,而且是所有成功者之神。

  • 标签: 比尔盖茨 首富 致富 世界第一 新经济 资产
  • 简介:基于封面的不平的集合处理一盖住宇宙组织的数据。一个软集合是宇宙的子集的一个parameterized家庭。两个理论能处理数据的无常。软集合在对目标的近似描述上有并非任何限制,并且他们可能形成一盖住宇宙。从这个观点,我们建立在这二个理论之间的一个连接。明确地,我们为这个目的建议一个互补参数。与这个参数,软盖住近似空间被建立,二个理论是bridged.Furthermore,我们学习在盖住和软盖住近似空间之间的一些关系并且获得一些重要结果。最后,我们定义一个观点联合能帮助我们简化参数的集合并且减少一个软盖住近似空格的存储要求的参数。

  • 标签: 软覆盖 粗糙集 近似空间 参数设置 不确定性 近似描述
  • 简介:软弹性的效果,即,到各向同性地变硬的elasticviscoplastic固体的缩进上的收益力量和塑料压缩的可能性的幼仔模量的比率的相对小的价值被调查。计算为完美地粘住的缩进被执行僵硬锋利的indenter进为缩进建模的柱体一半空间。材料被有限紧张elasticviscoplastic描绘允许的组成的关系塑料以及有弹性的压缩的可能性。软弹性和塑料压缩的可能性显著地减少名字的缩进坚硬的比率产出力量。一种线性关系在名字的缩进坚硬和幼仔模量的比率的对数之间被发现产出力量,但是与一个不同系数与在以前的研究报导比。名字的缩进坚硬为塑料泊松比率的价值相当慢慢地从塑料不可压缩性然后减少为小偏差很快减少不到0.25。为软弹性和塑料压缩的可能性,为缩进坚硬的更低的价值的主要原因与在在在indenter下面的材料的静水力学的压力水平的减小有关。

  • 标签: 压痕硬度 塑性压缩 软弹性 固体 粘塑性本构关系 屈服强度
  • 简介:TheconceptofsoftmatterwasfirstintroducedbyP.G.deGennesinhisacceptancespeechfortheNobelPhysicsPrizein1991.Inmechanicscommunity,however,peopleusuallypreferusingsoftmaterialinsteadofsoftmattertodescribethematerialwhoseenergyassociatedwiththermalmotioniscomparativetotheinteractionenergy.Unlikeintheconventionalcondensedmatter,entropyplaysanimportantandevendeterminativeroleinsoftmaterials.Thisparticularcharacteristicofsoftmaterialgivesbirthtoverycomplexandkaleidoscopicsystems,suchasliquidcrystals,polymers,colloids,granularmaterials,andbiologicalsystems.Softmaterialshavemanyvagariousproperties,includingstrongreactiontoweakstimulus,nonlinearresponse,self-assembly,tonameafew,whichfullyembodythecomplexitiesandparticularitiesinmulti-scalecompositions,structuresandinteractions.Theluxuriantmulti-disciplinenatureandwideapplicationsofsoftmaterialshavesuccessfullyintriguedbothscientistsandengineersworldwide.

  • 标签: 材料力学 软质材料 编辑 系统 结构 相互作用能
  • 简介:OnOctober15,2011,theSoftLawandHumanRightsResearchCenterundertheLawSchoolofthe110-year-oldShandongUniversitywasinaugurated.LuoHaocai,professorofPekingUniversityandchairmanoftheChinaSocietyforHumanRightsStudies,attendedtheopeningceremony.LuoistheinitiatorofsoftlawinChina.Thefoundingofthecenterillustrates

  • 标签: 社会建设 人权 山东大学 北京大学 开幕式 中国
  • 简介:Intoday’sworld,competitionbollsdowntothatofoverallNationalstrength.Acountry’sdevelopmentandstrengtharereflectednotonlyinhardpowerincludingeconomicgrowth,scientificandtechnologicaladvancementandmilitarypowerenhancementbutalsoinsoftpowerincludingcultureandideology,spiritualpursuitandmoralstrength.Inrecentyears,majorpowershave

  • 标签: 田七 四王 侧脚 创牌 对刀 侧刀
  • 简介:Thecombinationofradiotherapy(RT)andfunction-preservingsurgeryisthemostusualcontemporaryapproachinthemanagementofsofttissuesarcomas(STS).Pre-andpostoperativeRTresultinsimilarlocalcontrolrates,asshownbyalandmarktrialinextremitySTS.Inthisreview,theroleofRTinthemanagementofextremitySTSwillbediscussed,butSTSinothersites,includingretroperitonealSTS,willalsobeaddressed.ThefocuswillconsidervariousaspectsofRTincludingstrategiestoreducethevolumeoftissuebeingirradiated,dose,scheduling,andthepossibleofomissionofRTinselectedcases.Finally,technologyadvancesthroughtheuseofintensity-modulatedradiotherapy(IMRT),image-guidedIMRT,intraoperativeradiotherapy(IORT)andparticletherapywillalsobediscussed.

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  • 简介:Nano-particlecaptureisakeyprocessinfltration,separation,andbiomedicalapplications.Hereweexploredthemechanismsofsoftparticlecaptureusingnanofbernetworks.Weidentifedpossiblestatesofthecaptureprocess,whicharedefnedbytheirstructuralandmaterialparameters.Byperformingnumericalanalysis,weprovidedaphasediagramintheparametricspaceofthenetworkstructureandinterfacialadhesion.Theworkprovidesaconceptualmodelforrationaldesignofsyntheticmaterialsinrelatedapplicationsthatfocusontheprotectionagainstorremovalofvirus,aswellasothersoftparticles.

  • 标签: 纳米粒子 纤维网络 捕获 生物医学应用 力学 颗粒捕集
  • 简介:Thispaperaimsatdevelopingastochastic-elasticmodelofasoftelasticbodyadheringonawavysurfaceviaapatchofmolecularbonds.Theelasticdeformationofthesystemismodeledbyusingcontinuumcontactmechanics,whilethestochasticbehaviorofadhesivebondsismodeledbyusingBell'stypeofexponentialbondassociation/dissociationrates.Itisfoundthatforsufficientlysmalladhesionpatchsizeorstressconcentrationindex,theadhesionstrengthisinsensitivetothewavelengthbutdecreaseswiththeamplitudeofsurfaceundulation,andthatforlargeadhesionpatchsizeorstressconcentrationindex,thereexistoptimalvaluesofthesurfacewavelengthandamplitudeformaximumadhesionstrength.

  • 标签: 弹性体 表面 波浪 柔软 附着力 应力集中
  • 简介:DeGroot模型一个经典模型到意见的学习一致在里面一组个人(代理人)。一致能在一些情形下面被完成。但是什么时候这个组到达一致与一条会聚的意见珍视哪个不是我们期望什么,怎么罐头我们干涉系统和变化会聚的价值?在这糊机制命名软控制首先在意见动力学被介绍当人口被给,进化统治时,指导组意见不被允许变化。根据软控制的想法,一或几个特殊代理人,叫的党羽,被增加并且与在原版的代理人组织的或几正常连接了。党羽行动并且被当作正常代理人。作者证明会聚的意见价值的变化被起始的意见和党羽的有影响的价值决定,以及党羽怎么与正常连接代理人。有趣、违反直觉的现象被发现:与更小的起始的意见价值增加一个党羽(或更大)与比原版会聚的意见价值剂量未必减少(或增加)在一些条件下面的会聚的意见价值。这些条件通过数学分析被给,他们被数字测试验证。当一个党羽被连接到不同正常时,作者也发现系统的集中速度变化代理人。我们的模拟证明它是断然与连接正常的度有关在没有规模的网络的代理人。

  • 标签: 群体控制 模型 集体 加权 发现系统 无标度网络
  • 简介:Vacuumloadinghasbeenexaminedasawayofpreparinguniformlyconsolidatedsoftclaysamples.Thefacilityandloadingprocedurearedescribedinthispaper.Ananalyticalsolutiontothethreedimensionalconsolidationequationisderivedforestimatingthedegreeofconsolidationofthesoilsamplewithvacuumloading.Thegivenexampleshowsthatthepredicteddegreeofconsolidationofasoftclaybulkwithvacuumloadingisclosetothatmeasuredintheconsolidationprocess.

  • 标签: RECONSTITUTED CLAY VACUUM LOADING sample preparation
  • 简介:ItisgenerallyacknowledgedthatmobilecommunicationbasestationsarecomposedofhardwarecomponentssuchasFieldProgrammingGateArray(FPGA),DigitalSignalProcessor(DSP),whichpromisereliableandfluentservicesforthemobileusers.However,withtheincreasingdemandforenergy-efficiency,approachesoflowpower-consumptionandhigh-flexibilityareneededurgently.Inthiscircumstance,GeneralPurposeProcessor(GPP)attractspeople'sattentionforitslow-costandflexibility.BenefitedfromthedevelopmentofmodernGPPinmulti-core,SingleInstructionMultipleData(SIMD)instructions,largercache,etc.,GPPsarecapableofperforminghigh-densitydigitalprocessing.Inthispaper,wecompareseveralsoftware-definedradio(SDR)prototypesandproposethegeneralarchitectureofGPP-basedsoftbasestations.Then,theschematicdesignofresourceallocationandalgorithmoptimizationinsoftbasestationimplementationarestudied.Asanapplicationexample,aprototypeofGPP-basedsoftbasestationreferringtothe3rdGenerationPartnershipProject(3GPP)LongTermEvolution(LTE)isrealizedandevaluated.Tothebestofourknowledge,itisthefirstSoft-LTEprototypeeverreported.Intheend,weevaluatethetimingperformanceoftheLTEsoftbasestationandapacketlossratiooflessthan0.003isobtained.

  • 标签: GPPS 原理图设计 软基站 优化 现场可编程门阵列 单指令多数据
  • 简介:Anoverviewoftheprogressonpulse-preserving,coherent,nonlinearfiber-basedsupercontinuumgenerationispresented.Thecontextencompassesvariouswavelengthrangesandpumpsources,startingwithsilicaphotoniccrystalfiberspumpedwith1.0μmfemtosecondlasersuptochalcogenidestep-indexandmicrostructuredfiberspumpedfromopticalparametricamplifierstunedtomid-infraredwavelengths.Inparticular,silicaandsilicatebasedall-normaldispersion(ANDi)photoniccrystalfibershavebeendemonstratedforpumpingwithfemtosecondlasersoperatingat1.56μmwiththerecordedspectracovering0.9–2.3μm.Thismatchesamplificationbandsofrobustfiberamplifiersandfemtosecondlasers.Thereviewthereforefocusesspecificallyonthiswavelengthrange,discussingglassandnonlinearfiberdesigns,experimentalresultsonsupercontinuumgenerationuptothefundamentallimitofoxideglassfibertransmissionaround2.8μm,andvariouslimitationsofsupercontinuumbandwidthandcoherence.Specifically,theroleofnonlinearresponseagainsttheroleofdispersionprofileshapeisanalyzedfortwodifferentsoftglassANDifiberspumpedatmorethan2.0μm.Aspatio-temporalinteractionofthefundamentalfibermodewithmodespropagatinginthephotoniclatticeofthediscussedANDifibersisshowntohavepositiveeffectsonthecoherenceofthesupercontinuumatpumppulsedurationsof400fs.Finally,thedesignanddevelopmentofgraded-index,nanostructuredcoreopticalfibersarediscussed.Insuchstructuresthearbitraryshapingofthecorerefractiveindexprofilecouldsignificantlyimprovetheengineeringflexibilityofdispersionandeffectivemodeareacharacteristics,andwouldbeaninterestingplatformtofurtherstudytheintermodalinteractionmechanismsandtheirimpactonsupercontinuumcoherenceforsubpicosecondlaserpumpedsetups.

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  • 简介:physicalinfrastructure和softinfrastructure是一对政治类术语。文章通过梳理“infrastructure”的起源、发展以及分类,找到physicalinfrastructure和softinfrastructure的定位,即它们是“infrastructure”按照性质划分的一组下位词。文章还对现有的翻译版本一一进行了分析与讨论,最后通过图片、考查同类术语、文献三种方式进行验证,得出以下结论:physicalinfrastructure可译为物质性基础设施或硬基础设施;softinfrastructure可译为软基础设施。

  • 标签: PHYSICAL INFRASTRUCTURE SOFT INFRASTRUCTURE 翻译
  • 简介:Thecenterlinesegregationincontinuouscastingsteelisknowntobeformedbytheinterdendriticenrichedliquidflowatthesolidificationendinstrand.Atpresent,severalmethods,suchasthermalsoftreduction,electromagneticstirringanddynamicsoftreduction,areavailabletoreducethecentersegregationandtoimprovetheinternalquality.Althoughsomemethodscouldalleviatecentersegregationtosomeextent,theycanalsogiverisetonewproblems.Forinstance,thermalsoftreductioncanleadtosurfacecrackingduringcastingofsomesteelsandelectromagneticstirringcanresultinwhiteband.Dynamicsoftreductionisaneffectivetechnologyfortheimprovementofstrandqualityincontinuousslabcasting.Inthispaper,thekeyparametersofdynamicsoftreductiontechnology,suchassoftreductionregion,thetotalreductionamount,forlowcarbonsteelhavebeenstudiedbasedonexperimentalandtheoreticalanalysis.Thesoftreductionregionwasrelatedtothesegregationofchemicalcomposition,slabbulgingofnarrowsideandavoidinginternalcrackofslab.Thetotalreductionamountwascomposedofnaturalthermalshrinkageandactualreductionamountdependingoncriticalstrain.Forlowcarbonsteelwithslabdimensionof(950-1950)mm×170mm,thesolidfractionrangeinsoftreductionregionwasrecommendedfrom0.4to0.8,thetotalreductionamountwas2.0-2.8mm,andtheoptimizedreductionratewas0.4-1.2mm/min,respectively.Furthermore,adynamicsoftreductionsystemincontinuousslabcasting,VisualCast-Dynamic,hasbeendevelopedbymultithreadingmethod.Itdemonstratedthatthedynamicsoftreductionmodelinthisstudywascorrectwiththeabilityofonlinecontrol.

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