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
Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Soci
Pool Watch Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Soci
admin
2011-01-02
90
问题
Pool Watch
Swimmers can drown in busy swimming pools when lifeguards fail to notice that they are in trouble. The Royal Society for the Prevention of Accidents says that on average 15 people drown in British pools each year, but many more suffer major injury after getting into difficulties. Now a French company has developed an artificial intelligence system called Poseidon that sounds the alarm when it sees someone in danger of drowning.
When a swimmer sinks towards the bottom of the pool, the new system sends an alarm signal to a poolside monitoring station and a lifeguard’s pager. "In trials at a pool in Ancenis, near Nantes, it saved a life within just a few months, " says Alistair MeQuade, a spokesman for its maker, Poseidon Technologies.
Poseidon keeps watch through a network of underwater and overheard video cameras. AI software analyses the images to work out swimmers trajectories(轨道,轨线). To do this reliably, it has to tell the difference between a swimmer and the shadow of someone being cast onto the bottom or side of the pool. "The underwater environment is a very dynamic one, with many shadows and reflections dancing around. " says McQuade.
The software does this by "projecting" a shape in its field of view onto an image of the far wall of the pool. It does the same with an image from another camera viewing the shape from a different angle. If the two projections are in the same position, the shape is identified as a shadow and is ignored. But if they are different, the shape is a swimmer and so the system follows its trajectory.
To pick out potential drowning victims, anyone in the water who starts to descend slowly is added to the software’s "pre-alert" list, says McQuade. Swimmers who then stay immobile on the pool bottom for 5 seconds or more are considered in danger of drowning. Poseidon double-checks that the image really is of a swimmer, not a shadow, by seeing whether it obscures the pool’s floor texture when viewed from overhead. If so, it alerts the lifeguard, showing the swimmer’s location on a poolside screen.
The first full-scale Poseidon system will be officially opened next week at a pool in High Wycombe. Buckinghamshire. One man who is impressed with the idea is Travor Baylis, inventor of the clockwork radio. Baylis runs a company that installs swimming pools -- and he was once an underwater escapologist (表演脱身术的人)with a circus. "I say full marks to them if this works and can save lives, " he says. But he adds that any local authority spending 230,000 -- plus on a Poseidon system ought to be investing similar amounts in teaching children to swim.
The word "considered" in paragraph 5 could be best replaced by
选项
A、thought.
B、rated.
C、regarded.
D、believed.
答案
B
解析
该词为consider的过去分词,动词consider意思是“考虑;认为”,和“rate”与“regard”意思相近,但是“regard”需要和as连用,因此这里只能和rate替换,故选B。
转载请注明原文地址:https://kaotiyun.com/show/HALd777K
本试题收录于:
职称英语理工类A级题库职称英语分类
0
职称英语理工类A级
职称英语
相关试题推荐
Heisconsideredtobethemostdiligentstudentinclass.
MultipleSclerosis(多发性硬化症)1.MultipleSclerosis(MS)isadiseaseinwhichthepatient’simmune(免疫的)systemattacksthecentr
ScientistsDevelopWaysofDetectingHeartAttackGermanresearchershavecomeupwithanewgenerationofdefibrillators(除颤
MotherNatureShowsHerStrengthTornadoes(龙卷风)andheavythunderstormsmovedacrosstheGreatLakesandintoTrumbullCounty
Around45%oftheUK’scarbondioxideemissionscomefromtheenergypeopleuseeveryday—athomeandwhentheytravel.Inord
’FeedMeBetter’WhenBritishTVchefJamieOliverlaunchedhis’FeedMeBetter’campaignin2004inschoolsintheGreenw
ListeningtoBirdsongAmalezebrafinchchirpsawaytohimself.Suddenlyhenoticesafemalebirdnearby.Herealizesheha
CarMaintenanceOnceitwasconsideredgoodpracticetoletthecarengineidleaminuteortwofollowingcoldstarts.Todaywit
AtosendgoodstovariouspartsoftheworldBatanytimeduringtheyearChasgreadypromotedtradeDisitpossibletoprod
TeachingPoetryNopoemshouldeverbediscussedor"analyzed",untilithasbeenreadaloudbysomeone,teacherorstudent.
随机试题
Whodevelopedthisevening’seventaccordingtothetalk?
40岁,浮肿。少尿1周,BP160/100mmHg,尿蛋白定量2g/24小时,尿RBC20~30/HP,血肌酐600μmol/L,血CIC(+),肾脏病理:光镜下可见11个肾小球,部分毛细血管狭窄,6个细胞新月体形成。3个纤维新月体,IgG、C3呈颗粒样沉
A.每5年报告一次B.每3年报告一次C.每年报告一次D.每半年报告一次医疗机构应当建立本机构抗菌药物临床应用情况排名、内部公示和报告制度非限制使用级抗菌药物临床应用情况应该()。
对于机械横波而言,下面说法正确的是()。
根据个人所得税法律制度的规定,下列个人所得中,应按“劳务报酬所得”项目征收个人所得税的有()。
社会主义道德原则的核心是()。
一、作答提示1.申论考试必须在答题卡上用钢笔或圆珠笔作答,并在答题卡指定的位置填写自己的姓名及填涂准考证号等信息。2.申论考试与一般的写作考试不同,它是对应考者阅读理解能力、分析能力、提出并解决问题能力和文字表达能力的综合测试。3
在相同的时间、地点、条件下,面对同一认识客体,不同的主体会得出不同的认识结果。这说明
AsaresultofWWI,______wasnotoneofthedefeatednations.
High-speedInternetproviderAtHomeCorp.isbuyingExciteInc.,oneoftheleadingdestinationsontheWorldWideWeb,forabo
最新回复
(
0
)