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英语CET6听力考试模拟练习材料2017年英语CET6听力考试模拟练习材料鸟欲高飞先振翅，人求上进先读书。以下是小编为大家搜索整理的.2017年英语CET6听力考试模拟练习材料，希望对正在关注的您有所帮助!更多精彩内容请及时关注我们应届毕业生考试网!Mostpeoplesufferingfrommultiplesclerosisorspinalcordinjuriescanstillmovetheireyesbecausetheyaredirectlyconnectedtothebrain.Someexistingtechnologiesalreadyallowseverelydisabledpeopletostareatarrowsonacomputeranddirectthemovementofawheelchair.Butthereareproblemswiththatsystem,includingadelaybetweenthemovementoftheeyesandthewheelchair."Currenttrackingsoftwareoftenusesascreen-basedsystemwhereyouhaveascreenopenandyoulookatlocationsonthescreen.Theproblemwiththatisthatit'sverysimplisticandalsodivertstheusers'attentionfromtheoutsideworldandthereforethere'smoreriskofnotnoticingobstaclesorotherthingsintheway,"saidKirubinPillay,aPhDstudentatImperialCollegeLondon.AteamledbyAldoFaisalatImperialCollegeLondonhasdevelopedsoftwarethatallowsuserstomaneuverthechairjustbylookinginthedirectiontheywanttotake."Oureyesarenotonlyawindowintooursoul,they'realsoawindowtoourintentions.Soifyouwanttogosomewhere,forexampleifIwanttogothere,orgothere,IwilllookthereandIwilllookthereinaspecificmanner,andwecanbuildacomputersystemthatcandecodeoureyemovements,andsoweobserveeyemovementswithaneyetracker,andwethentrytomakesenseofthem,andthecomputerinterpretsthesecommandsanddrivesthewheelchairaccordingly,”saidFasial.Twocamerastrainedontheeyesobservetheirmovementsandcandeterminewhetherapatientismerelylookingaroundorwantstomoveinacertaindirection."Soessentiallywetrackthepupiloftheeyeandviaacalibrationprocess,werelatethattowherethesubject'slookingintheworldaroundthem,"explainedWilliamAbbott,aresearcheratImperialCollegeLondon.Visualinformationdetectedbycamerasisanalyzedbyalgorithmswithin10millisecondsandtranslatedintoinstructionsformovementthat'salmostinstantaneous.Thecamera-basedsystemcostsonlyabout$85becausemostoftheworkisdonebythealgorithms.Noexpensivehardwareisneeded.TheLondonteamhopestomakethesystemcommerciallyavailabl
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