学科分类
/ 25
500 个结果
  • 简介:

  • 标签:
  • 简介:In ,and ,is 

  • 标签:
  • 简介:Sister Carrie has been called the quintessential modern American novel. Through its characters and their story,a member of the upper middle class who falls from his comfortable lifestyle to a life on the streets. Neither Carrie nor Hurstwood earn their fates through virtue or vice,but rather through random circumstance. Their successes and failures have no moral value

  • 标签:
  • 简介:IntheprocessoflearningEnglish,proficiencyinvocabularyisthekeypointtostudyalanguagewell.Obviously,it’sverycrucialtoknowabouttheoriginandhistoryofthewords.ResearchonEnglishetymologyisconducivetomemory,interpretationandunderstandingofthewords.Generallyspeaking,EnglishetymologyiscloselyconnectedwithBritishhistory.WesternculturealsohasexertedprofoundimpactonEnglishetymology,whichleadstoconsiderableborrowingspouringintoEnglishvocabulary.Inbrief,thisdissertationwillinquireintoEnglishetymologypreliminarily.

  • 标签: 高校 高等教育 英语教学 教学方法 阅读教学
  • 简介:AbstractInfectious diseases remain as an important public health threat to humans. Research into pathogens can be useful for planning an organized response to infectious diseases. Bibliometric analysis is an important method for scientific research and assessing capability. In this study, 100 pathogens of public health importance were selected, and the distributions of annual, national, institutional, and journal publications on Science Citation Index (SCI) journals were statistically analyzed. The United States of America ranked the first in terms of the number of relevant studies published. China attaches great importance to the prevention and control of infectious diseases, but still needs to improve in the following areas: for example, insufficient SCI reports on particular pathogens, institutions SCI reports on pathogens lower than world top pathogen research institutions, and lack of influential international pathogen-related journals. Scientific literature databases are important tools for science-of-science analysis. The findings of this study shed light on the hot spots and the ignored spots in pathogen researches, and thus would be useful for drawing a national and institutional research plan.

  • 标签: Bibliometric analysis Pathogens Microorganisms Parasites Research Biosafety Biosecurity
  • 简介:TherealDirectionOfArrival(DOA)varieswithtimeinmobilecommunicationsystem.Insuchsituation,theperformanceofconventionalbeamformerswillbedegradedobviously.QuantumSignalProcessing(QSP)beamformerisinsensitivetoDOAerrors,thusitcanachievestableoutputperformanceinsuchcircumstance.ThisletterverifiedtheeffectivenessandfeasibilityoftheQSPbeamformerbysimulationresults.

  • 标签: 信号检测 通信技术 设计方案 网络技术
  • 简介:核是最突出的subnuclear结构,它在真核细胞的细胞的进程执行许多函数。以便在牛的房间理解nucleoli的结构、功能的角色,我们分析了牛的nucleoli的proteomic作文。nucleoli从Madin钞票牛的肾房间被孤立并且由SDS页和强壮的阳离子交换层析在分别以后由LC-MS/MS使分析遭到了到proteomic。用搜索和GPM数据库寻找的吉祥物数据库的数据的分析在牛的nucleoli识别了311蛋白质,它以前包含了22蛋白质没在人的nucleoli的proteomic分析识别。用GoMiner软件的识别蛋白质的分析建议牛的nucleoli包含了涉及ribosomal生物的续生说的蛋白质,房间周期控制,transcriptional,翻译并且translational以后规定,运输,和结构的组织。

  • 标签: 蛋白质组分 细胞核 LC-MS/MS 核仁结构 数据库检索
  • 简介:Givenasetofsignals,aclassicalconstructionofanoptimaltruncatablebasisforoptimallyrepresentingthesignals,istheprincipalcomponentanalysis(PCAforshort)approach.Whentheinformationaboutthesignalsonewouldliketorepresentisamoregeneralproperty,likesmoothness,adifferentbasisshouldbeconsidered.OneexampleistheFourierbasiswhichisoptimalforrepresentationsmoothfunctionssampledonregulargrid.ItisderivedastheeigenfunctionsofthecirculantLaplacianoperator.Inthispaper,basedontheoptimalityoftheeigenfunctionsoftheLaplace-Beltramioperator(LBOforshort),theconstructionofPCAforgeometricstructuresisregularized.Byassumingsmoothnessofagivendata,onecouldexploittheintrinsicgeometricstructuretoregularizetheconstructionofabasisbywhichtheobserveddataisrepresented.TheLBOcanbedecomposedtoprovidearepresentationspaceoptimizedforbothinternalstructureandexternalobservations.Theproposedmodeltakesthebestfromboththeintrinsicandtheextrinsicstructuresofthedataandprovidesanoptimalsmoothrepresentationofshapesandforms.

  • 标签:
  • 简介:基于阶段空间重建的推迟时间的嵌入方法,计算脑电图(EEG)的近似的熵(ApEn)的一个新方法被建议。计算结果证明在有嵌入尺寸的变化的近似的熵癫痫的EEG和正常EEG之间有重要差别。这个结论是有用的由熵分析不同EEG的动态行为。

  • 标签: 脑电图 近似熵 计算结果 相空间重构 动力学行为 时间延迟
  • 简介:ThelimitsofparameterγinFASTTCParestudiedinthispaper.AcontinuoustimefluidflowmodelofthelinkbufferisconsideredtocreatealinearcontrolsystemrelatedtoFASTTCP.Linearingthefluidflowmodelandwindowcontrolmodel,theLaplacetransformversionofcongestioncontrolsystemarepresented.Itresultsinanegativefeedbacksystemwithopenlooptransferfunction.WiththeanalysisofNyquistcurveofthesystem,asufficientconditiononasymptoticalstabilityofFASTTCPcongestionwindowrelatedtotheparameterγisobtained.Packetlevelns-2simulationsareusedtoverifythetheoreticalclaims.

  • 标签:
  • 简介:TheCMSOOreconstructionprogram-ORCA-hasbeenusedsince1999toproducelargesamplesofreconstructedMonte-Carloeventsfordetectoroptimization,triggerandphysicsstudies,TheeventsarestoredinseveralObjectivityfederationsatCERN,intheUS,Italyandothercountries.ToperformtheirstudiesphysicistsusedifferenteventsamplesrangingfromcompletedatasetsofTBytesizetoonlyafeweventsoutofthesedatasets.WedescribetheimplementationoftheserequirementsintheORCAsoftwareandthewaycollctionsofeventsareaccessedforreading,writingorcopying.

  • 标签: CMS 00再现 程序设计 目标取向
  • 简介:Pulsediagnosisisaspecialmethodofdiagnosingpatient’sdisease.Amathematicalmodelofthepulseispresentedinthispaper.Thefeatureparametersofthesphygmogramareextractedbasedonthesignalmodel.Thediscriminationandprincipalanalysisareemployedtoidentifythepulses.Theresultsarematchingwiththoseoftraditionalmethods.

  • 标签: PULSE DIAGNOSIS MODELING MULTIVARIATE ANALYSIS
  • 简介:Diversityindicesandabundancedistributionmodelsarestatisticaltoolswhichecologistshaveappliedfordecadesforanalyzingtheintrinsicregularitiesofvariousecologicalentities,Inthiswork,wehaveappliedthesetechniquestousethenotionssuchaspedodiversity(asanexampleofgeodiversityinabroadsense),inordertodectectthedifferencesandsimilaritiesbetweenbothnaturalresources,biologicalandnon-biological,ThediscussionhasmainlybeenconductedthroughthestudyoflandformbasedpedodiversityanalysisappliedtoSOTERdigitaldatabasesinHanianIslan,China,ThemainanalyticalmethodsincludeindicesofrichnesSthatarethenumberofthecategories(SOTERunitsrelatingtodifferentsoilsinthiswork),indicesbasedonproportionalabundanceofcategoriesHandEwhicharenotonlythenumberbutalsotheirrelativeabundance(inourcase,therelativeareaoccupiedbyeachpedotaxa)istakenintoaccount,modelsofthedistributionofabundaceofcategoriesthatprovidethemostcompletedescriptionbutalsotheleastabridgedandGISmappingtoshowthespatialvariationdigitally.

  • 标签: 海南岛 GIS 地理信息系统 空间分布 多样性指标 土壤
  • 简介:ThispaperproposesthediscriminantanalysisonlandgradingafteranalyzingthecommonmethodsanddiscussingtheFisher'sdiscriminantindetail.Actuallythismethoddeducesthedimensionfrommultitosingle,thusitmakesthefeaturevectorsinn-dimensionchangetoascalar,andusethisscalartoclassifysamples.Thispaperillustratestheresultbygivinganexampleoftheresidentiallandgradingbythediscriminantanalysis.

  • 标签: 地籍测量 判别式 土地等级 基础地理信息