英语作文数据分析报告范文.docx

英语作文数据分析报告范文.docx

《英语作文数据分析报告范文.docx》由会员分享，可在线阅读，更多相关《英语作文数据分析报告范文.docx（4页珍藏版）》请在冰豆网上搜索。

英语作文数据分析报告范文

英语作文数据分析报告范文

1.写篇英语作文调查报告

AReportonChildren'sGratitudetoTheirParents

Children'slivesaregivenbytheirparentsandoriginally,childrenshouldbegratefultothem.Hower,notallthechildrencandoso.Areportmaderecentlysuggeststhatone-fourthofthepeoplethinkthattoraisechildrenisthedutyoftheirparentsandsochildrenneedn'texpressanygratitudetothem.Anotherone-fourthofthepeoplesupposethatthereisabiggapbetweenthemandtheirparents.Theydon'tknowhowtocommunicatewiththeirparents,letalonetosaygratitude.Otherssaythattheyhatetoexpressanygratitude.Itisboring.

TorespectparentsandexpressourgratitudetothemisagoodtraditionofChinesepeople.AsfarasIamconcerned,toweshouldshowourrespectandgratitudetoourparents.Theygivebirthtous,andundoubtedlywearesupposedtobegratefultotheminreturn.

2.有关数据采集的英文文章5000字左右

Dataacquisitionisthesamplingoftherealworldtogeneratedatathatcanbemanipulatedbyacomputer.SometimesabbreviatedDAQorDAS,dataacquisitiontypicallyinvolvesacquisitionofsignalsandwaveformsandprocessingthesignalstoobtaindesiredinformation.Thecomponentsofdataacquisitionsystemsincludeappropriatesensorsthatconvertanymeasurementparametertoanelectricalsignal,thenconditioningtheelectricalsignalwhichcanthenbeacquiredbydataacquisitionhardware.Acquireddataaredisplayed,analyzed,andstoredonacomputer,eitherusingvendorsuppliedsoftware,orcustomdisplaysandcontrolcanbedevelopedusingvariousgeneralpurposeprogramminglanguagessuchasBASIC,C,Fortran,Java,Lisp,Pascal.SpecializedprogramminglanguagesusedfordataacquisitionincludeEPICS,usedtobuildlargescaledataacquisitionsystems,LabVIEW,whichoffersagraphicalprogrammingenvironmentoptimizedfordataacquisition,andMATLABwhichprovidesaprogramminglanguage,andalsobuilt-ingraphicaltoolsandlibrariesfordataacquisitionandanalysis.HowdataisacquiredSourceDataacquisitionbeginswiththephysicalphenomenonorphysicalpropertyofanobject（underinvestigation）tobemeasured.Thisphysicalpropertyorphenomenoncouldbethetemperatureortemperaturechangeofaroom,theintensityorintensitychangeofalightsource,thepressureinsideachamber,theforceappliedtoanobject,ormanyotherthings.Aneffectivedataacquisitionsystemcanmeasureallofthesedifferentpropertiesorphenomena.Atransducerisadevicethatconvertsaphysicalpropertyorphenomenonintoacorrespondingmeasurableelectricalsignal,suchasvoltage,current,changeinresistanceorcapacitorvalues,etc.Theabilityofadataacquisitionsystemtomeasuredifferentphenomenadependsonthetransducerstoconvertthephysicalphenomenaintosignalsmeasurablebythedataacquisitionhardware.TransducersaresynonymouswithsensorsinDAQsystems.Therearespecifictransducersformanydifferentapplications,suchasmeasuringtemperature,pressure,orfluidflow.DAQalsodeployvarioussignalconditioningtechniquestoadequatelymodifyvariousdifferentelectricalsignalsintovoltagethatcanthenbedigitizedusingADCs.SignalsSignalsmaybedigital（alsocalledlogicsignalssometimes）oranalogdependingonthetransducerused.SignalconditioningmaybenecessaryifthesignalfromthetransducerisnotsuitablefortheDAQhardwaretobeused.Thesignalmaybeamplifiedordeamplified,ormayrequirefiltering,oralock-inamplifierisincludedtoperformdemodulation.Variousotherexamplesofsignalconditioningmightbebridgecompletion,providingcurrentorvoltageexcitationtothesensor,isolation,linearization,etc.Analogsignalstoleratealmostnocrosstalkandsoareconvertedtodigitaldata,beforecomingclosetoaPCorbeforetravelingalonglongcables.Foranalogdatatohaveahighsignaltonoiseratio,thesignalneedstobeveryhigh,andsending+-10Voltsalongafastsignalpathwitha50Ohmterminationrequirespowerfuldrivers.Withaslightlymismatchedornoterminationatall,thevoltagealongthecableringsmultipletimeuntilitissettledintheneededprecision.Digitaldatacanhave+-0.5Volt.ThesameistrueforDACs.AlsodigitaldatacanbesentoverglassfiberforhighvoltageisolationorbymeansofManchesterencodingorsimilarthroughRF-couplers,whichpreventnethum.Alsoasof200716bitADCscostonly20$orDAQhardwareDAQhardwareiswhatusuallyinterfacesbetweenthesignalandaPC.Itcouldbeintheformofmodulesthatcanbeconnectedtothecomputer'sports（parallel,serial,USB,etc。

）orcardsconnectedtoslots（PCI,ISA,PCI-E,etc。

）inthemotherboard.UsuallythespaceonthebackofaPCIcardistoosmallforalltheconnectionsneeded,soanexternalbreakoutboxisrequired.ThecablebetweenthisBoxandthePCisexpensiveduetothemanywiresandtherequiredshieldingandbecauseitisexotic.DAQ-cardso