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
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector(LGMD
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector(LGMD
admin
2016-12-06
79
问题
Locusts, which can consume their own weight in food each day, have a large neuron called the locust giant movement detector(LGMD)located behind their eyes. The LGMD releases bursts of energy whenever a locust is on a collision course with another locust or a predatory bird.
A few years ago Rind and her colleagues studied the activity of the LGMD as locusts watched action scenes from the movie Star Wars. The team found that the LGMD releases more energy when something is coming directly at the locust.
These spikes of energy, called action potentials, prompt the locusts to take evasive action. The entire process from motion detection to reaction takes about 45 milliseconds—or 45 thousandths of a second.
"Locusts, like most insects, can see many more images per second than we do. This means they can react in time to things that are approaching very rapidly and so make their escape before collision," Rind said.
The locusts’ ability to see many more images per second than humans gives them a remarkable view of the world. For humans, it would be like watching everything go by in slow motion, Rind added.
And because the insects only detect things that are on a collision course with them, the locusts are ignorant of all other movements. It’s a particularly useful trait, as the locusts travel in dense swarms akin to rush hour traffic.
"The LGMD system is complemented by the brain of the locust, which provides the necessary experience and knowledge to really react according to the situation," said Jorge Cuadri, a project engineer with Spain’s National Centre of Microelectronics. Cuadri is helping to develop the circuitry(电路装置)for the locust-inspired crash avoidance technology.
Cuadri and his colleagues are responsible for adapting the locust collision-avoidance system to the automotive environment.
Their adapted system is based on a single, integrated step that combines visual optics and electronics. The conventional way of doing this would involve two steps: First, a camera would capture the image. Second, a digital processor would analyze it.
The two-step approach, which uses radar images, is expensive and currently limited only to luxury cars, Rind said.
What kind of fields is covered when Cuadri adapts the locust collision-avoidance system to the automotive environment?
选项
A、Visual optics and electrics.
B、Electronics and visual optics.
C、Visual optics and electronics.
D、Physics and chemistry.
答案
C
解析
根据题干中的the locust collision-avoidance system to the automotive environment可快速定位至第8、9段。第9段首中的Their adapted system就是指代第8段中的collision—avoidance system,故由第9段首句可以直接得出答案为visual optics and electronics,即C。
转载请注明原文地址:https://kaotiyun.com/show/L3JK777K
0
专业英语四级
相关试题推荐
Thespeakerwasverygoodat______hisideasduringthediscussion.
VisitorstoBritainmayfindthebestplacetosamplelocalcultureisinatraditionalpub.Butthesefriendlyhostelriescanb
Fiftyyearsago,mostpeople’sdailylevelsofactivitywereequivalenttowalkingthreetofivemilesaday.Today,the【C1】____
Womendriversaremorelikelytobeinvolvedinanaccident,accordingtoscientists.Researchers【C1】______6.5millioncar
ImmigrantstotheUKarebeingtestedontheirEnglishskillsbeforebeingabletoclaimincome-relatedbenefitsunderanewsch
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheirmoneymuststudyconsumerbehavior.Hemust【C1】____
Ascientistwhowantstopredictthewayinwhichconsumerswillspendtheirmoneymuststudyconsumerbehavior.Hemust【C1】____
AftertheFirstWorldWar,theauthorAnaisNinbecameinterestedintheartmovementknownasSurrealismandinpsychoanalysis,
Accordingtothepassage,whomightbeespeciallyinterestedinthenewprogram?
随机试题
海星会计师事务所接受委托对S股份有限公司2010年度财务报表进行审计。注册会计师于2011年3月16日完成了审计工作,按审计业务约定书的要求,应于2011年3月26日提交审计报告。S公司2010年度审计前的利润总额为120万元。现假定存在以下几种情况:
关于心电图机走纸速度的论述,正确的是
倾斜巷道架设金属支架支护时,支架的安装要保证柱腿的稳固,背板和顶帮之间的空隙要充填严密,同时支架要有()的迎山角。
某股票的120日平均价格为10元,当日开盘价12.5元,收盘价为12.7元,其120日乖离率是( )。
关于一般纳税人取得增值税专用发票用于抵扣时,注册税务师的审核要点包括( )。
下列各项中,属于外购投资性房地产的是()。
中央银行一般性货币政策工具主要有()。
进入新世纪以来,我国经济总量在世界的位次不断提升。1978年,我国GDP只有1482亿美元,居世界第十位。经过30多年的快速发展,2010年我国GDP达到58791亿美元,超过日本成为世界第二大经济体,仅次于美国。主要农产品产量位居世界前列。20
关系数据库管理系统能实现的专门关系运算包括_______。
软件需求分析应确定的是用户对软件的______。
最新回复
(
0
)