研究生英语演讲稿范文.docx
- 文档编号:25813800
- 上传时间:2023-06-15
- 格式:DOCX
- 页数:4
- 大小:16.93KB
研究生英语演讲稿范文.docx
《研究生英语演讲稿范文.docx》由会员分享,可在线阅读,更多相关《研究生英语演讲稿范文.docx(4页珍藏版)》请在冰豆网上搜索。
研究生英语演讲稿范文
研究生英语演讲稿范文
篇一:
研究生英语发言稿
ThanksforChairZhangtointroduceme,Ladiesandgentlemen,goodmorning!
MynameisXXIamfromXXUniversity.
Itisaprivilegeandhonortobeinvitedtodeliveratalkon“Wi-Fitechnology”.IwouldliketothankChairZhangChaoforinvitingmetodeliverthistalk.Inmypresentationtoday,IhopetotalkaboutSeeThroughWallswithWi-Fi.Mypresentationwillincludethreeparts.Thefirstpartisintroduction,InthispartIwillintroducesomeconceptanddifficultiesofmyresearch.ThesecondpartisRelatedWork,andinthispartIwillintroducetheresearchIhavedoneandsomemethodIhaveused.Thethirdpartisexperiments,andinthispartIwillintroduceExperimentssimulationresults.
Part1:
First,Iwouldliketotalkaboutintroductionoftheresearch.HerearesomeconceptImusttellyouisthatSimilartoradarandsonarimaging.Itisaboutwhenfacedwithanon-metallicwall,afractionoftheRFsignalwouldtraversethewall,reflectoffobjectsandhumans.AndIalsoshouldtellthedifficultiesofmyresearch.Weallknowthatthewi-fisignalwillreflectwhenitmeetbarrier.Soitwillcreatesomedistractionwithoriginalsignal.ThisisalsoamainproblemIwillsolveinthenextwork.
Part2:
Now,Iwilltalkaboutmyrelativeworkofmyresearch.HerearesometoolsIneed.Thefirstis2GHzbandwidth,largepowersource,8-footantennaarray.Andthesecondisanadditionalreceiverwhichisusedtoconnectthereceiversbehindandinfrontofthewalltoajointclockviawires.Hereisthemostimportmethodofmyresearchabouthowtotrackinghumans,itincludetrackingasinglehumanandTrackingmultiplehumans.Trackingasinglehumanneedstwocondition,thefirstisthespeedofhumanmovingitisabout1m/s,ButNearly,wedonotknowtheexactvalueofv,wecannotpinpointthelocationofthehuman.Butwecantrackhis/herrelativemovements.ThisistheSchematicplotofhowtoTrackingasinglehuman,InmyresearchIuseISARinsteadofantennaarray,theISARexploitsthemovementofthetargettoemulateanantennaarray.Andhowtotrackingmultiplehumans,Eachhumanemulateanantennaarray,receivedsignalwillbeasuperpositionoftheantennaarraysofthemovinghumans.Thenoiseincreasessignificantly.Thesignalreflectedoffallofthesehumansiscorrelatedintime,sincetheyallreflectthetransmittedsignal.Thereflectionsoftwohumansmaycombinesystematicallytodimeachotheroversomeperiodoftime.Andthesolutiontosolvethisproblemis:
disentanglecorrelatedsuper-imposedsignals---smoothedMUSICalgorithm.
Part3:
Finally,Iwillintroducetheexperiments,inthissimulationpicture,wecanseethatone,twoandthreeperson’smovingtrackasthearrowssigned,andinthispicturewecanseetheratioofAutomaticdetectionofhumanswiththeactualsituation.
Thankyouforlisteningmypresentation.
1
篇二:
2014年研究生英语演讲比赛
GMO
GMOistomodify,tofix,tosplice,torecombinethegenesforneworganismsormuchadoptablespecies.ThetechnologyofGMOismainlyappliedinfoodsupplies,suchasvegetables,cropsandanimals,andmedicalcare.
ThepositivesideofGMOisevident.Intheagriculturefield,GMOfoodscanincreasecropproduction,foodqualityandthediversityofspecies,forinstance,moredrought-resistantplants.Andinthemedicalfield,itcouldproducespecialelements,assomeproteins,andevenorganstotreatsomecertaindiseases.
However,thenegativesideofGMOisuncertain.Itmaydoharmtosomeinsectsandhumanbody.Itmayalsoaffectthegrowthofthesurroundingplantsandanimals,andevenmaycausebiologicalpollutionanddestroythelocalecosystem.
Bytheendof2013,theGMOplantationareaswereexpandedto170millionhectaresintheworldandthereareabout4millionhectaresinChina.AndwhetherGMOissafe,thereisnocertainevidence.Thematurityandbenefitsofgenetictechnologycanneverbejustifiableforitswideapplication.
Soinmypart,wecanneverbetoocarefulinthespreadingofGMO.
篇三:
英语演讲稿
Goodmorning.Welcometothelectureheretoday.
1
Ibelieveeverybodymayknoworhearaboutnuclearpower.Regardedasasourceofpower,nuclearpowerisanimportantelementofadiverse,cleanenergyandanimportantsourceoflow-carbonelectricity.Increasingtheamountofelectricitygeneratedbynuclearpoweriscriticaltomovetowardamoresustainableandsecurerenergyinthefuture.
Accordingtostatistics,nuclearpoweristhesecondlargestsourceofdomesticelectricityinAmerica,andthecountryisexpandingnuclearpowerasakeyenergysourceforlong-termenergysecurity.Regardlessofwhatthedoes,theworldisincreasinglyturningtonuclearpowerasalow-carbonelectricitysource.Allinall,nuclearpowerplaysasignificantroleincuttingairpollution,andprotectingnationalsecurity.
2
Althoughnuclearpowerplaysagrowingroleinmeetingtheworld’senergyneeds,nuclearpowerdangerswillremain.ThedisastrousearthquakeandtsunamiinJapan,whichledtothenuclearaccidentsattheFukushimareactor,havebroughtsafetytotheforefrontofthediscussiononnuclearpower.Atthesametime,terrorismisanotherthreattothedevelopmentofnuclearpower.Oncethenuclearpowerplantencountersterroristattacks,theconsequenceswouldbehaveknownforyearsthatanuclearaccidentanywhereisanuclearaccidenteverywhere,whichleaveusmanyinspirationsandquestionsworthyofconsideration:
whatisthetrendforthedevelopmentofnuclearpowerinthefuture,andhowrationaltocarryontheutilizationofnuclearpower?
3
WeknowthatthenuclearaccidentinJapanhasraisedquestionsaboutthedevelopmentofnuclearpowerplantincountriesaroundtheworld.SomeEUcountrieshaveannouncedthesuspensionofnuclearpowerfacilitiesprojects,particularlyinGermany,ChancellorAngelaMerkelintimatedthatGermanywouldnotpreparetoestablishnuclearpowerplants.Itshouldbesaid,however,thateverychoiceisbothnarrowandwide,soinnuclearpower.Wemustrecognizethatthereisnomajo
renergysourcethatcanbeexploitedwithoutrisk.Aslongasweprohibittheabuseofnuclearpower,andimprovesecuritytomakeuseofitsfavorablefactors,nuclearpowerwilltakemoreactivepartinimprovinglivingconditionsandtheecologicalenvironmentratherthandestroyingourhome.
4
Inmyview,giventheworld’sfast-growingenergyneeds,nuclearpowershouldbeproperlydevelopedduetoitsspecialtyinenergyshortagesupplementandenvironmentalpollutionreduction.Underthesafeandsecuritypremise,siteselectionofnuclearpowerplantshouldbeplacesawayfromthepopulationcentreandwheretherearefewornonaturalgeologicalhazards,suchasearthquakes.Inthetransitionofenergyutilization,nuclearpowercanassumeamajorroletosupplythepowergeneration,anditsdevelopmentcanbeconstrainedafterthetechnologymaturityofwindpower,solarpowerandothernewenergypowergeneration.
5
Whileworkingtoencouragethepeacefuluseofnuclearpower,wemustseekthesecurityofaworldwithoutnuclearweaponsandapeacefulexpansionofnuclearpower.Workingcooperativelyandwithasharedsenseofcommitmentandobligation,wecansucceedinbuildingacleanandsaferenergyfuture,andwithoutthissupport,nuclearpowerwillnotbeabletoplaytherightkindofrolewhichitcanandshouldplayintheglobalenergyfuture.Ilookforwardtoworkingwithallofyougatheredheretodaytoturnthisvisionintoareality,andultimatelyleaveourchildrenwithastronger,bettercountrythanwhenwefoundit.
ThankyouandI’mhappytotakesomequestions.
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- 研究生 英语演讲 范文