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SSS 2011-08-30

时间:2011-09-05 06:43来源:互联网 提供网友:gmeng   字体: [ ]
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    (单词翻译:双击或拖选)

 This is Scientific American's 60-Second Science. I'm Cynthia Graber. This will just take a minute.

 
Smart phones can provide music, movie times, bus schedules. They can even make phone calls! And now, they might help cut down fuel use while driving. That is, if enough are used in a system called SignalGuru developed by researchers at MIT and Princeton.
 
A network of smartphones mounted on vehicle dashboards captures and transmits images of traffic signals. The SignalGuru software then analyzes1 the data to predict traffic signal patterns. If the light ahead is red, the driver is told the optimal2 speed to avoid stopping and idling. Or told to make a slight route change that avoids a stop. Because idling and accelerating significantly increase fuel consumption.
 
The system was tested in Cambridge, Massachusetts, where traffic lights are on a set pattern. And in Singapore, where signals respond to traffic flow. And drivers slashed3 their fuel use by about 20 percent on average. The study won a best-paper award at the Association for Computing4 Machinery's MobiSys Conference. 
 
The researchers say the platform could work for a variety of driving tips—prices at gas stations, or parking availability. And a bonus: with the phone mounted on the dashboard, you can't text and drive.
 
Thanks for the minute. For Scientific American's 60-Second Science, I'm Cynthia Graber.

点击收听单词发音收听单词发音  

1 analyzes e2e80b8320e1dd8d4c035d41fd7e44e5     
v.分析( analyze的第三人称单数 );分解;解释;对…进行心理分析
参考例句:
  • This approach analyzes management by studying experience usually through cases. 这个学派通常从实例获得经验,用以分析管理。 来自辞典例句
  • The econometrician analyzes statistical data. 经济计量学者要分析统计材料。 来自辞典例句
2 optimal zmDzhM     
adj.最适宜的;最理想的;最令人满意的
参考例句:
  • What is the optimal mix of private and public property rights in natural resources?私人和国家的自然资源产权的最适宜的组合是什么?
  • Optimal path planning is a key link for the sailing contest.帆船最优行驶路径规划是帆船比赛取胜的关键环节。
3 slashed 8ff3ba5a4258d9c9f9590cbbb804f2db     
v.挥砍( slash的过去式和过去分词 );鞭打;割破;削减
参考例句:
  • Someone had slashed the tyres on my car. 有人把我的汽车轮胎割破了。
  • He slashed the bark off the tree with his knife. 他用刀把树皮从树上砍下。 来自《简明英汉词典》
4 computing tvBzxs     
n.计算
参考例句:
  • to work in computing 从事信息处理
  • Back in the dark ages of computing, in about 1980, they started a software company. 早在计算机尚未普及的时代(约1980年),他们就创办了软件公司。
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