首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
Sonic Device The other day, Dr. Robert Smith, who is blind, took a remarkable stroll through the campus of the University of
Sonic Device The other day, Dr. Robert Smith, who is blind, took a remarkable stroll through the campus of the University of
admin
2012-09-10
75
问题
Sonic Device
The other day, Dr. Robert Smith, who is blind, took a remarkable stroll through the campus of the University of California at Santa Barbara. As Dr. Smith walked along the campus, places and impediments (障碍物) in his path seemed to call out their names to him, "library here, library here", "bench here, bench here".
Dr. Smith was testing a prototype(样机) navigation system for the blind that announced the surrounding objects through stereo headphones that were mounted to a computer in his back-pack (背包), creating virtual reality landscape(仿真景象). The information came not from some miniature radar but from the signals broadcast by the military’s network of global positioning satellites(全球定位卫星). One day, its developers hope, miniaturized (小型化)versions of this navigation device, which now weighs 28 pounds, will help the blind navigate unfamiliar neighborhoods.
"With this system you do not need to know a thing in advance about where you are going, " said Dr. Roberta Klatzky, a psychologist at Carnegie Mellon University who is working with Dr. Smith to develop the navigating device. Dr. Michael Oberdor of the National Eye Institute said, "A blind person could walk down the street and know not just that he was at 80th and Broadway, but what stores are around, and that Zabar’s delicatessen(熟食店) was up ahead. This navigation system tells you not just where there are obstacles, but your overall location geographically. " It lets blind users construct a mental map of new surroundings and learn their way around.
The navigation system uses signals from a computerized map to create a "virtual acoustic display(仿真声音显示)" This is a talking map in which large objects seem to announce themselves in the headphones with the precise timing and loudness that would be the case if the objects were actually making a sound. This allows the blind person to sense immediately his or her distance or direction, and use that information for guidance. While no one knows whether it is because blind people tend to develop a sharper sense of hearing. Those who have tried the system say that they quickly adapt to locating an object through the sounds. "One of the crucial features of this system is that it takes advantage of sensory psychophysics(感官心理物理学)-how the brain interprets signals from outside to make a map of your surroundings so you can navigate, " Dr. Oberdor said.
Scientists aim to reduce the weight of this device to five pounds.
选项
A、Right
B、Wrong
C、Not mentioned
答案
C
解析
文章没有谈到这方面的信息。文章只在第二段提到过希望制造出微型版本的机器,并没有提到是否有一个特定的目标要降到多重。
转载请注明原文地址:https://kaotiyun.com/show/qhQd777K
本试题收录于:
职称英语理工类C级题库职称英语分类
0
职称英语理工类C级
职称英语
相关试题推荐
KnowingYourRealPersonalityfromSleepingPositionsEveryonehasgottwopersonalities—theonethatisshowntotheworld
PanicApanicisaformofcollectiveinwhichagroupofpeople,facewithanimmediatethreat,reactinanuncoordinateda
ProlongingHumanLifeProlonginghumanlifehasincreasedthesizeofthehumanpopulation.Manypeoplealivetodaywouldha
Ihavebeentryingtoquitsmoking.
KnowingYourRealPersonalityfromSleepingPositionsEveryonehasgottwopersonalities—theonethatisshowntotheworld
Lastwinter,sheboughtapairofbeautifulboots.
TimothyStowofInverGroveHeights,Minn.workedhard,exercisedoftenandthoughthegotplentyofsleep.Yetheneverfeltre
A.around50percentofthetotalpopulationinagivencountryB.highestsaturationC.5.8millionD.Britain,Canadaandthe
8.Sulfurhasoccasionallybeenfoundintheearthinanalmostpurestate.
随机试题
爆震强,推迟点火角度_______,爆震弱,推迟的角度_______。
低热是指腋下体温在()
实施经腹输卵管结扎术,下述不适宜的时期是
王某为A公司的副总经理。B公司为C公司的第一大股东。王某从2001年年初就代表A公司和B、C两公司接触,准备收购B公司在C公司的全部股权。之后,三方达成协议。同年9月2日,C公司董事会通过股权转让协议,并通知王某;9月10日,C公司对外公告该消息,其股价上
中宣部、国家安全生产监管总局、公安部、广电总局、全国总工会、团中央和全国妇联等组织开展了2011年全国安全生产月活动,该活动的主题是()。
在中国历史上,唐朝、宋朝是中国文学最兴盛的朝代。唐宋八大家中有父子三人,人称“三苏”,其中不包括()。‘
要求学生“尽可能多地列举出报纸的用途”,学生给出“学习用”“包东西”等各种各样的答案,这里考查的是创造性思维的()
下列选项中不属于定性分析的理论的是
______today,hewouldgettherebySaturday.
HowmanykindsofdoctorsarethereintheUS?______.
最新回复
(
0
)