a*******e
发帖数: 62 | 1 我把自己的OPamp 结成unity gain buffer 然后输入 －1V～1V的step 发现有10％（0.
1V）的overshot 如果输入 0～1的step 发现有5％的overshot （0.05V）这个电路会正
常工作还是会震荡？ 谢谢 我把瞬态仿真的结果放在附件里 一个是 －1到1的step 一
个是0到1的step |
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a*******e
发帖数: 62 | 2 zoom in 之后 请看附件 第一个是 －1到1的step的zoom in 第二个是 0到1的zoom in
第一个overshot 0.1V 第二个 overshot 0.05V 周期都是2us pulse width 1us 上升
下降时间都是10ns 多谢了
0. |
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s**********t
发帖数: 1846 | 3 F22的供氧系统的问题早就知道，也propose了修改方案，但是因为要多花钱被否了。
KADENA AIR BASE, Japan (AP) — Years before F-22 pilots began getting dizzy
in the cockpit, before one struggled to breathe as he tried to pull out of a
fatal crash, before two more went on television to say the plane was so
unsafe they refused to fly it, a small circle of U.S. Air Force experts knew
something was wrong with the prized stealth fighter jet.
Coughing among pilots and fears that contaminants were leaking into their
breathing apparatus led t... 阅读全帖 |
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g*q
发帖数: 26623 | 4 MANGALORE: At least 160 people were confirmed dead in an Air India plane
crash in Mangalore, Karnataka early on Saturday, officials said.
The accident occurred when the plane overshot the runway of the airport.
Television channels said the flight was coming in from Dubai.
"At least 160 passengers have died in the crash," V.S. Acharya, Home
Minister of the southern state of Karnataka, told reporters.
A second official also confirmed that 160 people had been killed.
The plane was carrying 163 pass |
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p******u
发帖数: 14642 | 5 http://www.sfgate.com/cgi-bin/article.cgi?f=/g/a/2010/05/21/bloomberg1376-L2SXFU07SXKX-1.DTL
Air India Plane Crashes on Landing; 166 Feared Dead (Update1)
May 22 (Bloomberg) -- An Air India plane overshot the runway while landing
in the southern Indian city of Mangalore and burst into flames, killing as
many as 166 people in India's first fatal commercial aircraft crash in a
decade.
"Our present information is that all 166 people on board the plane are
feared dead," said Prabhat Sharma, the depu |
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z*h
发帖数: 773 | 6 Energy densities are available in Wikipedia. Read it and think of it. If you
want to check conversion efficiency, I have a list here.
Input Output Conversion efficiency
e m large electrical motors 90-97
m m overshot waterwheels 60-85
e m small electric motor 60-75
t m large steam turbines 40-45
c m large gas turbines 35-40
c m diesel engines 30-35
c m best large steam engines 20-25
c m internal combustion engines 1 |
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g**1
发帖数: 10330 | 7 http://feeds.washingtonpost.com/click.phdo?
i=3e280dbf25cbde52656c107798047ce8
Indian arrests reveal corruption in granting of pilot licenses
Rama Lakshmi, Sunday, April 17, 6:41 PM
NEW DELHI — An Indian pilot made news here in January when she landed an
Airbus 320 passenger plane on its nose wheel. Investigators soon
discovered several alarming things: Parminder Kaur Gulati had not only
made that dangerous mistake before, she also had earned her senior
pilot’s license through fake grades.
Worse... 阅读全帖 |
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c******k
发帖数: 8998 | 8 F22的供氧系统的问题早就知道，也propose了修改方案，但是因为要多花钱被否了。
KADENA AIR BASE, Japan (AP) — Years before F-22 pilots began getting dizzy
in the cockpit, before one struggled to breathe as he tried to pull out of a
fatal crash, before two more went on television to say the plane was so
unsafe they refused to fly it, a small circle of U.S. Air Force experts knew
something was wrong with the prized stealth fighter jet.
Coughing among pilots and fears that contaminants were leaking into their
breathing apparatus led t... 阅读全帖 |
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J*V
发帖数: 3150 | 9 http://www.washingtonpost.com/local/trafficandcommuting/korean-
Korean airlines have had a troubled past
By Lori Aratani, Published: July 6 E-mail the writer
South Korean airlines have a spotty safety history, and in the 1990s and
early 2000s, the industry was beset by a series of crashes.
In 1993, an Asiana Airlines Boeing 737-500 carrying 110 people from Seoul to
a port city in southwestern Korea crashed, killing all but 44 passengers.
In 1997, a Korean Air Boeing 747 slammed into a hill while... 阅读全帖 |
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p*********w
发帖数: 23432 | 10 Plane overshoots Jamaica runway
KINGSTON, Jamaica – An American Airlines flight from Miami Tuesday night
overshot a runway during a heavy rainstorm in Kingston, injuring dozens of
people, officials said. There were no reports of fatalities.
Flight 331 took off from Miami International Airport at 8:52 p.m. and
arrived at Norman Manley International Airport at 10:22 p.m. It originated
at Reagan National Airport in Washington, D.C.
Jamaican Information Minister Daryl Vaz said "the airplane is broke |
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l********t
发帖数: 254 | 11 没人相信那是因为一个M按成了T。
现在似乎人们开始相信，跌破10000点是真的，但如何很快爬升回10000多点是真的？人
为的？政治需要？花街和主街的天作之合？
天知道。
After yesterday's historic market plunge, everyone is groping for
explanations. What caused the market to drop 999 points, mostly in the space
of a half-hour, and then recover 700 points by the end of the day?
Was it the chaos in Europe, stock values that have overshot underlying
economics, and other fundamentals? Or was it a "fat finger" trading error--
the typing of "billion" instead of "million" in a sell or |
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w******s
发帖数: 16209 | 12 还是开始真正的南下？
昨天的技术股票暴涨是什么？庄家抬高出台？
还是holiday season 牛牛号角的吹响？
ft。。 打问号打的几乎要笑出来了。 |
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g*****u
发帖数: 14294 | 13 QQQQ本来要高潮得，这下憋得。可能后面要不举了。 |
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l*****n
发帖数: 1064 | 14 11000 is a direction, just wait to see today's close |
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w******s
发帖数: 16209 | 15 drop down的话可能会overshot
不过很多老股东都会抛弃苹果了。
当年听说steve回apple，无数美国大妈都all in了
valua |
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i******n
发帖数: 175 | 16 指数过了 day high，还是觉得这会是个 overshot，从些转头向下。
在期指图上，这个 day high 的位置，是 pp 的一个阻力位，也是 24 小时图上从高点
下来的一个 lower high 的位置。从这往下的可能性高。 |
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a**i
发帖数: 608 | 17 Published: Wednesday, 4 Jan 2012 | 3:57 PM ET Text Size By: Jeff Cox
CNBC.com Senior Writer
----------------------------------------------------------------------------
----
After a year in which the Standard & Poor’s 500 finished almost exactly
flat for the year and with a slew of headwinds lurking, stock market
strategists could be excused for sounding a bit pessimistic for the year
ahead.
No worries, though: Wall Street is just as optimistic as ever that it can
somehow fight its way out of it... 阅读全帖 |
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w***h
发帖数: 273 | 18 No rebounce until from below $16. The rational target of FB should be $16.
However the market always overshot. So $12~$13 is very good short term
bottom to gamble. |
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c*******o
发帖数: 5387 | 19 【 以下文字转载自 Living 讨论区 】
发信人: challenger (Ray), 信区: Living
标 题: blackstone rushed to buy 16,000 single family homes last year
发信站: BBS 未名空间站 (Wed Jan 9 09:10:19 2013, 美东)
Blackstone has spent more than $2.5 billion on 16,000 homes to manage as
rentals, from the $13.3 billion fund it raised last year.It is buying in
Atlanta, Chicago, Las Vegas, Phoenix, Northern and Southern California,
Miami, Orlando and Tampa, Florida.
(BN) Blackstone Rushes $2.5 Billion Purchase as Homes Rise: Mort gages
+----... 阅读全帖 |
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g*******s
发帖数: 2828 | 20 10 yr treasury
其实我觉得大牛如Bill Gross之流，很多时候和我们小散也犯同样的毛病，比如
recency effect/price anchor。Gross最近鼓吹rate has overshot，2% is more
reasonable given current rate environment,可实际上现在美国/欧洲都比2011年底
要好不少（至少纸面上），而那时候的他鼓吹2.2%是铁底/做空try。唯一的区别就是
rate曾经到过1.4% ，所以现在的2.5%看起来很诱人。
两年前大家都忙着买TBT，现在才跌了3礼拜又要抄底Bond，谁知道呢，10 yr真飚到3.5
%(两年前的最高）我觉得也不是不可能。那样估计要死一堆人了，which is only
fitting given the 30 year bull run。 |
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g******4
发帖数: 6339 | 21
-----------------
非常感谢投资者, 推动前2年价格上涨。
Now, 房价还在涨，只是上涨速度慢一点!!
-------------------
Blackstone-Fueled Single-Family Home Boom Lifts Chicago
February 14, 2014 — 11:31 AM CST
.............
In Chicago, investors accounted for about 20 percent of purchases in the
first half of last year, according to Geoff Smith, executive director of the
Institute for Housing Studies at DePaul University in Chicago.
...........
December 15, 2013|By Mary Ellen Podmolik, Chicago Tribune reporter
.............
Eight wel... 阅读全帖 |
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M********8
发帖数: 3837 | 22 一年的数据就代表全部？
看奥数那么小的sample有什么用？况且奥数对于进好大学也是overshot, 不需要。奥数
不过是个晋升的阶梯，谁真的拿这个当饭吃？ |
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c*******o
发帖数: 5387 | 24 【 以下文字转载自 Living 讨论区 】
发信人: challenger (Ray), 信区: Living
标 题: blackstone rushed to buy 16,000 single family homes last year
发信站: BBS 未名空间站 (Wed Jan 9 09:10:19 2013, 美东)
Blackstone has spent more than $2.5 billion on 16,000 homes to manage as
rentals, from the $13.3 billion fund it raised last year.It is buying in
Atlanta, Chicago, Las Vegas, Phoenix, Northern and Southern California,
Miami, Orlando and Tampa, Florida.
(BN) Blackstone Rushes $2.5 Billion Purchase as Homes Rise: Mort gages
+----... 阅读全帖 |
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l*******l
发帖数: 13923 | 25 This is depressing...
You might remember when this accident happened 12 years ago .
This Southwest Airlines flight from Vegas overshot the runway at Burbank.
The plane smashed past the airport fence, careened across the street
and ended up with a collapsed landing gear, right next to a gas station.
But that's not the amazing part!!!
(See attached photo) |
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d*********e
发帖数: 3835 | 26 The Associated Press
Sunday, March 21, 2010 | 12:25 a.m.
Federal safety officials recommended Thursday that better communications
procedures be adopted in the wake of a fatal Montana plane crash and a
Northwest Airlines flight that overshot the Minneapolis airport by more than
100 miles last year.
The National Transportation Safety Board issued its recommendations to the
Federal Aviation Administration, which runs the nation's air traffic control
system. The report comes after the board investig |
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s******a
发帖数: 252 | 27 I wrote such recruitment ads before and interviewed a few.
I can't say the computational requirements in this one is challenging. Most
are basic. But the expectation on work experiences is overshot, and it
should mostly address a candidate pool of PhDs.
In fact, personality is often more important than experience in real
interviews. |
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m******1
发帖数: 95 | 28 如果是二阶线性系统就好办了，其实就是找critical damping，此时的阶跃响应step
response是没有过冲overshot的，而且响应到位的速度是最快的。
不知道这是不是你问的，你去找找critical damping的东西应该有答案 |
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