c*****m 发帖数: 1160 | 1 【 以下文字转载自 Hardware 讨论区 】
发信人: chatham (聊天火腿), 信区: Hardware
标 题: GPS是怎么接受traffic信息的?
发信站: BBS 未名空间站 (Sun Jun 16 15:56:54 2013, 美东)
我理解的GPS就是从几颗卫星接受到时间点,通过几颗卫星的时间差算出当前的经纬度。
因此,它自己不发射信号,也不接受其他数据。
那么它是怎么接受traffic的信息?如何知道这一刻前方拥堵,需时20分钟?
不知道这个版是不是问这个问题的最好地方... |
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Z**R 发帖数: 1233 | 2 http://space.newscientist.com/article/mg19626343.500-get-ready-for-traffic-jams-on-the-moon.html
* 15 December 2007
* NewScientist.com news service
It might be time to consider traffic lights on the moon. In the past week,
governments, space agencies, and even a company from the Isle of Man
announced plans to land on the moon.
Marking the 35th anniversary of the Apollo programme's last outing, NASA
announced on Monday that its next crewed lunar mission is on track for 2020,
despite an |
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s*******n 发帖数: 1 | 3 the company I am working for is looking for transportation/traffic engineer,
the location would be Fairfax, VA or Pittsburgh, PA. the responsibility
would be travel demand modeling and traffic operation analysis. I would be
happy to forward resume for you. |
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j******7 发帖数: 1 | 4 各位网上的朋友。由于最近工作的地方政策改变,决定不再续我的h1b1,所以我必须在
现有的h1b1过期之前找到下一份工作。不知大家是否可以帮忙推荐一下或可以给些信息
。下面是我的背景。先行谢过了。 硕士毕业,Traffic/Transportation Engineering
。4年左右的County Government工作经验。主要是Transportation Planning, Traffic
Operations 和施工管理方面的经验。Florida PE。不在乎relocation. |
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发帖数: 1 | 5 西雅图MBE/DBE公司诚招Traffic Engineer for traffic signal modifications and
pedestrian push button design. Experienced in Synchro modeling should be the
essential. 有执照者待遇从优考虑。
有兴趣者请将简历邮至: [email protected] |
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h***e 发帖数: 20195 | 6 【 以下文字转载自 Mathematics 讨论区 】
发信人: looksmall (了了), 信区: Mathematics
标 题: 老张关于计算机网络的专利 “Network traffic specification”
关键字: 计算机网络 专利 computer network patent yitang zhang 张益唐
发信站: BBS 未名空间站 (Sat May 25 21:05:41 2013, 美东)
真心替老张高兴。
和唐朴祁一起发的。
"Network traffic specification, US 6373824 B1”
Publication date Apr 16, 2002
Filing date Dec 29, 2000
故老张有 挾太山以超北海 之能, 马工,矿工,非不能也乃不为也。
老张的历史使命就是做大问题,名垂青史。 前面的过程只是“故天将降大任于是人也
,必先苦其心志,劳其筋骨,饿其体肤,空乏其身,行拂乱其所为 ,所以动心忍性 ,
曾益其所不能。” |
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w****h 发帖数: 212 | 7 Poisson/Markov ON-OFF的Traffic是不是属于Gaussian分布的?
能否就用Gaussian概率分布表达式描述这些traffic? |
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s*****6 发帖数: 74 | 8 上月拿到一个Traffic Ticket,今天法官给了个retiring the traffic ticket的选项
,但貌似不是dimiss. 但也不用交罚款。请问这个retired和dismissed有什么区别?谢
谢大家! |
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t*****2 发帖数: 8 | 9 前几天考的traffic school,超级简单,而且便宜,
http://www.gototrafficschool.com/default.aspx
所有州都可以考,我本人选的是加州, 进去网站,注册一下就可以了,里面有三个选
项,直接选最便宜的traffic school就可以了,选择$9.5,接着可以输入coupon
Referral Code= X5M-B9E-829 可以减去2美元,所以最终费用只需要$7.5美金。
注册完以后就可以开始了,里面有十六个章节和一个fianl exam,你没必要看,每个章
节以后有三道练习题,这个对错没有关系,错了回去再做就可以了,结束以后,就可以
直接做final exam, 这个最重要的,要有70%的正确率才能pass。总共就25道题目,很
简单,都是单项选择题,没有时间限制,不懂的你还可以这网上google答案,我把我做
的题目copy下来了,有正确答案,可以供大家参考。而且final exam题目都一样的。 |
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w*******y 发帖数: 60932 | 13 Garmin n黺i 265/265T 3.5-Inch Bluetooth Portable GPS Navigator with Traffic
Special Offer Right now, you can purchased this Garmin n黺i 265T GPS for
only $85.49 with coupon code ERSJ6F26. Simply add this item to your cart and
enter the code at checkout. But hurry while supplies last. Link:
http://www.amazon.com/Garmin-3-5-Inch-Bluetooth-Portable-Naviga
Technical Details
* Bright, 3.5-inch diagonal color QVGA TFT touchscreen with 320 x 240
pixels and white backlight
* Preloaded with City Na... 阅读全帖 |
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w*******y 发帖数: 60932 | 14 Today, Amazon lowered the price for a Garmin n黺i 1350LMT 4.3-Inch Portable
GPS Navigator with Lifetime Map & Traffic Updates from $149 to $136.
I applied the current special offer of $20 off on selected Garmin nuvi
models by
entering code "GOGARMIN" during checkout and also got free standard shipping.
Here's the breakdown in my e-mail confirmation:
1 "Garmin n黺i 1350LMT 4.3-Inch Portable GPS Navigator with Lifetime Map
& Traffic Updates"
Electronics; $136.44
In Stock
Sold by: Amazon.com, LLC... 阅读全帖 |
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