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165 个结果
  • 简介:Auniqueapproachforpermeationfillingofnonpermeableinertialconfinementfusiontargetcapsuleswithdeuterium-tritium(DT)ispresented.Thisprocessusesapermeablecapsulecoupledintothefinaltargetcapsulewitha0.03-mm-diameterfilltube.Leakfreepermeationfillingofglow-dischargepolymerization(GDP)targetsusingthismethodhavebeensuccessfullydemonstrated,aswellasicelayeringofthetarget,yieldinganinnericesurfaceroughnessof1-μmrms(rootmeansquare).Finally,themeasuredDTice-thicknessprofileforthisexperimentwasusedtovalidateathermalmodel'spredictionofthesamethicknessprofile.

  • 标签: fill-tube INERTIAL CONFINEMENT FUSION PERMEATION FILL
  • 简介:为在目标之中为相互作用建模的一个典型Markov网络能处理错误合并问题,而是它在合作追踪者之中由于盲目比赛受不了标记的问题。在这篇论文,我们为追踪的多目标建议一个运动限制Markov网络模型。由扩充典型Markov,有特定的Markov的网络锁住哪个带动议限制优先,这个建议模型能克服盲目比赛并且甚至在严重吸藏的情况中指导标签到相应目标。另外,运动限制优先作为本地潜在的功能被提出并且能容易在新奇模型的联合分发表示被合并。试验性的结果证明我们的模型比在解决错误的另外的方法优异合并并且同时并且高效地把问题标记。

  • 标签: 网络模型 多目标跟踪 交互作用 运动约束
  • 简介:Theclosephotogrammetric3-Dcoordinatemeasurementisanewmeasuringtechnologyinthefieldsofthecoordinatemeasurementmachine(CMM)inrecentyears.Inthismethod,weusuallyplacesometargetsonthemeasuredobjectandtakeimageoftargetstodeterminetheobjectcoordinate.Thesubpixellocationoftargetimageplaysanimportantroleinhighaccuracy3-Dcoordinatemeasuringprocedure.Inthispaper,somesubpixellocationmethodsarereviewedandsomefactorswhichaffectlocationprecisionareanalyzed.Thenweproposebilinearinterpolationcentroidalgorithm.Theexperimentshaveshownthisalgorithmcanimproveaccuracyoftargetcentroidbyincreasingavailablepixels.

  • 标签: 像素清晰性 目标定位 质心算法 双线性插值 图像测量法
  • 简介:Theimprovedlaser-to-pedestalcontrastratioenabledbycurrenthigh-powerlaserpulsecleaningtechniquesallowsthefinefeaturesofthetargetsurvivebeforethemainlaserpulsearrives.Weproposetointroducethenano-fabricationtechnologiesintolaser–plasmainteractiontoexplorethenoveleffectsofmicro-structures.Wefoundoutthatnotonlylaser-drivenparticlesourcesbutalsothelaserpulseitselfcanbemanipulatedbyspecificallydesignedmicro-cylinderand-tubetargets,respectively.Theproposalwassupportedbyfull-3Dparticle-in-cellsimulationsandsuccessfulproofof-principleexperimentsforthefirsttime.Webelievethiswouldopenawaytomanipulaterelativisticlaser–plasmainteractionatthemicro-sizelevel.

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  • 简介:BaliActionPlanprovisionsacknowledgethefactthatdevelopingcountriesarealreadymakingeffortstoreduceemissionsandmovetowardsalowcarbonpathway.TheCopenhagenAccordmentions"Nationallyappropriatemitigationactionsseekinginternationalsupportwillberecordedinaregistryalongwithrelevanttechnology,financeandcapacitybuildingsupport.Thephrase"measurable,reportableandverifiable"wascriticaltotheagreement,andthewayinwhichtheconceptofMRVisreflectedinthepost-2012agreementwillhavesignificantimplicationsfortheeffectivenessofthatagreementforstakeholdersinbothdevelopinganddevelopedcountries.Itisworthlookingforcurrentexamplesofdevelopingcountryprogramsthatcanbemeasured,reportedandverifiedandexamininghowcountriesthemselvescurrentlyundertakemitigationpoliciesandmeasures.ManyofChina’sdomesticpolicieshavebeenineffectforseveralyearsandthusprovideempiricalevidenceforhowsuchprogramscanworkontheground.ThispaperwillhighlighthowMRViscurrentlyapplieddomesticallyinChinaandwillnotmakeanyspecificproposalsfornegotiators;itonlyseekstoinforminternationaldiscussiononhowMRVmightbeappliedinpractice,andthereforewhatprovisionsmightberequiredinaUNFCCCclimateagreement.

  • 标签: 发展中国家 减排 测量 气候变化框架公约 核查 利益相关者
  • 简介:ThepresentpaperanalyzeshistoricallytherelationshipbetweencarbonemissionandeconomicdevelopmentbydifferentstagesthroughadoptingelasticdecouplingmethodsandTapioevaluationcriteriaalongwithacomparisonwiththenationalFiveYearPlans.TheanalysisshowsthattheinfluencingfactorstotherelationshipbetweencarbonemissionandeconomyinChinaaredifferent,andeconomicdevelopmentandcarbonemissionhavelessconnectionintherecent30yearsofreformandopening-upinChina.Itisadifficulttasktorealizethepromisethatwewillreducecarbonemissionby40%-50%in2020basedonthedatafromhistoricalexperienceanddifferentexpectationsforeconomicdevelopmentfromeconomists.Throughconstructingthecalcula-tionmodelofcarbonemissionintensitygapaccordingtodifferentdevelopmentscenarios,theanalysisshowsthateconomicgrowth,infrastructureinvestmentandfurtherdevelopmentofindustrial-izationarethemaindriverstotheincreaseofcarbonemission,technologicalprogress,andparticularly,thereductionofenergyconsumptionistheprimarymeanstoreducecarbonemissioninChina.Itisimperativetotransformtheeconomicgrowthpattern,anditisagrandtasktoperformandthereisalongwaytogoforChinatomaintaineconomicgrowthandreducecarbonintensity.

  • 标签: 基础设施投资 差距分析 解耦方法 中国 弹性 经济增长方式
  • 简介:改进移动的目标喧嚷比率(TCR)在合成的孔雷达(SAR)中指向,形象为目标察觉和鉴定是很重要的。在这篇论文,用Cloude的分解理论,一个平均协变性矩阵能被分解成代表三个不同散布过程的矩阵的求和:单身者弹起散布,双弹起散布,并且扩散散布。使用三个部件的联合提高一幅图象的对比的一个新想法被建议。以便基于HH,HV,和VV数据与测定偏振的对比改进方法作比较,二幅组合紧张图象的轮船区域被图象binarization检测。试验性的结果证明方法在这建议纸提供更好的对比。

  • 标签: 目标分解理论 SAR图像 增强方法 极化 对比度增强 合成孔径雷达
  • 简介:TanshinoneIIAisapharmacologicallyactivecompoundisolatedfromDanshen(Salviamiltiorrhiza),atraditionalChineseherbalmedicineforthemanagementofcardiacdiseasesandotherdisorders.Butitsunderlyingmolecularmechanismsofactionarestillunclear.ThepresentinvestigationutilizedadataminingapproachbasedonnetworkpharmacologytouncoverthepotentialproteintargetsofTanshinoneIIA.Networkpharmacology,anintegratedmultidisciplinarystudy,incorporatessystemsbiology,networkanalysis,connectivity,redundancy,andpleiotropy,providingpowerfulnewtoolsandinsightsintoelucidatingthefinedetailsofdrug-targetinteractions.Inthepresentstudy,twoseparatedrug-targetnetworksforTanshinoneIIAwereconstructedusingtheAgilentLiteratureSearch(ALS)andSTITCH(searchtoolforinteractionsofchemicals)methods.AnalysisoftheALS-constructednetworkrevealedatargetnetworkwithascale-freetopologyandfivetopnodes(proteintargets)correspondingtoFos,Jun,Src,phosphatidylinositol-4,5-bisphosphate3-kinase,catalyticsubunitalpha(PIK3CA),andmitogen-activatedproteinkinasekinase1(MAP2K1),whereasanalysisoftheSTITCH-constructednetworkrevealedthreetopnodescorrespondingtocytochromeP4503A4(CYP3A4),cytochromeP450A1(CYP1A1),andnuclearfactorkappaB1(NFκB1).Thediscrepancieswereprobablyduetothedifferencesinthedivergentcomputerminingtoolsanddatabasesemployedbythetwomethods.However,itisconceivablethatalleightproteinsmediateimportantbiologicalfunctionsofTanshinoneIIA,contributingtoitsoveralldrug-targetnetwork.Inconclusion,thecurrentresultsmayassistindevelopingacomprehensiveunderstandingofthemolecularmechanismsandsignalingpathwaysofinasimple,compact,andvisualmanner.

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  • 简介:Forreal-timejammingsignalgenerationindeceivinginversesyntheticapertureradar(ISAR),thetargetcharacteristicsmodulationisalwaysprocessedintheexpensivefieldprogrammablegatearray(FPGA).Duetothelargecomputationalcomplexityofthetraditionalmodulatingoperation,thesizeandstructureofsimulatedfalse-targetarelimited.Withregardtotheprincipleofdechirpinginrangecompressionoflinearfrequencymodulated(LFM)radar,anovelalgorithmnamed'inversedechirping'isproposedfortargetcharacteristicsmodulation.ThisalgorithmonlyneedsonecomplexmultiplierintheFPGAtogeneratethejammingsignalwhentheradarsignalisintercepted,whichcanbeobtainedbymultiplicationofradarsignalsamplingsandtheequivalentdechirpedtargetechointhetimedomain.Asthecomplexsynthesisofdechirpedtargetechocanberealizedbycheapdigitalsignalprocessor(DSP)withintheinterpulsetime,theoverallcostofthejammingequipmentwillbereducedandthefalse-targetsizewillnotbelimitedbythescaleofFPGA.Numericalsimulationsareperformedtoverifythecorrectnessandeffectivenessoftheproposedalgorithm.

  • 标签: ISAR 合成器 目标图像 逆合成孔径雷达 现场可编程门阵列 数字信号处理器
  • 简介:ThedefiningneuropathologicalfeatureofParkinson’sdisease(PD)isthelossofnigrostriataldopaminergic(DA)projections.Thisresultsinabiochemicalreductionofstriataldopaminelevelsandmovementdisorders,suchasatremoratrest,rigidityofthelimbs,bradykinesia,andposturalinstability(Kimetal.,2011;Kimetal.,2012;BurkeandO’Malley,2013;Leemetal.,2014;Nametal.,2014).BecausetheetiologyofPDisnotfullyunderstood,itcannotguidethedevelopmentofknowledge-basedtargetedtherapeutics.

  • 标签: 多巴胺能神经元 神经营养因子 哺乳动物 雷帕霉素 配合物 靶标
  • 简介:Spacecraftsciencemissionstoplanetsorasteroidshavehistoricallyvisitedonlyoneorseveralcelestialbodiespermission.Theresearchgoalofthispaperistocreateatrajectorydesignalgorithmthatgeneratestrajectoryallowingaspacecrafttovisitasignificantnumberofasteroidsduringasinglemission.Fortheproblemofglobaltrajectoryoptimization,evenwithrecentadvancesinlow-thrusttrajectoryoptimization,afullenumerationofthisproblemisnotpossible.Thisworkpresentsanalgorith...

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  • 简介:介绍了S函数的基础理论和利用S函数对Simulink中所没有的模块进行设计的方法,并采用此方法对RDC模块进行了具体的设计,通过仿真实验,验证了该方法的正确性.

  • 标签: S函数 RDC模块 仿真 自动控制技术
  • 简介:在水下目标识别是在声学的面对的一种关键技术并且在水下防卫。在这篇文章,一个识别系统基于模糊逻辑推理(可播放的动画文件)被建立。这个系统主要由三部分组成:模糊输入模块,有一套推理规则的模糊逻辑推理模块和de模糊的产量模块。Theinference结果证明识别系统处于大多数条件是有效的。

  • 标签: 模糊逻辑推理 特征提取 目标识别 快速靶雷 快速水下武器 海战
  • 简介:Inthehourstoweeksfollowingtraumaticspinalcordinjuries(SCI),biochemicalprocessesareinitiatedthatfurtherdamagethetissuewithinandsurroundingtheinitialinjurysite:aprocesstermedsecondaryinjury.Acrolein,ahighlyreactiveunsaturatedaldehyde,hasbeenshowntoplayamajorroleinthesecondaryinjurybycontributingsignificantlytobothmotorandsensorydeficits.Inparticular,effortshavebeenmadetoelucidatethemechanismsofacrolein-mediateddamageatthecellularlevelandtheresultingparalysisandneuropathicpain.Inthisreview,wewillhighlighttherecentdevelopmentsintheunderstandingofthemechanismsofacroleininmotorandsensorydysfunctioninanimalmodelsofSCI.Wewillalsodiscussthetherapeuticbenefitsofusingacroleinscavengerstoattenuateacrolein-mediatedneuronaldamagefollowingSCI.

  • 标签: 脊髓损伤 丙烯醛 运动 神经元损伤 靶标 治疗
  • 简介:Inordertoimprovetheperformanceoflinespectrumdetection,accordingtothefeaturethattheunderwatertargetradiatednoisecontainingstablelinespectrum,thedifferencesofthephasedifferencebetweenlinespectrumandbackgroundnoise,aweightedlinespectrumdetectionalgorithmbasedonthephasevarianceisproposedinfrequencydomain.Afterphasedifferencealignment,thephasevarianceoflinespectrumandthephaseofbackgroundnoise,respectively,aresmallandbiginfrequencydomain,thismethodutilizestheweightedstatisticalalgorithmtocumulatethefrequencyspectrumbasedonthephasevariance,whichcanrestrainthebackgroundnoisedisturbance,andenhancethesignaltonoiseratio(SNR).Thetheoryanalysisandexperimentalresultsbothverifythattheproposedmethodcanwellenhancetheenergyoflinespectrum,restraintheenergyofbackgroundnoise,andhavebetterdetectionperformanceunderlowerSNR.

  • 标签: 辐射噪声 测算法 相位特征 特征谱线 背景噪声 线谱
  • 简介:Theaccuratedetectionofcooperativetargetsplaysakeyandfoundationalroleinunmannedaerialvehicle(UAV)landingautonomously.Thestandardmethodbasedonfixedthresholdistoosusceptibletobothilluminationvariationsandinterference.Toovercomeissuesabove,arobustdetectionalgorithmwithtripleconstraintsforcooperativetargetsbasedonspectralresidual(TCSR)isproposed.Firstly,bydesigninganasymmetriccooperativetarget,whichcomprisesredbackground,greenHandtriangletarget,thecapturedoriginalimageisconvertedintoaLabcolorspace,whosesaliencymapisyieldedbyconstructingthespectralresidual.Then,thetripleconstraintsaredevelopedaccordingtothepriorknowledgeofthecooperativetarget.Finally,thesalientregioninsaliencymapisconsideredasthecooperativetarget,anditmeetsthetripleconstraints.ExperimentalresultsincomplexenvironmentsshowthattheproposedTCSRoutperformsthestandardmethodsinhigherdetectionaccuracyandlowerfalsealarmrate.

  • 标签: SALIENCY detection COOPERATIVE TARGET spectral RESIDUAL